21 files changed, 12842 insertions, 0 deletions
diff --git a/tools/Makefile.am b/tools/Makefile.am
new file mode 100644
index 0000000..7c2a616
--- /dev/null
+++ b/tools/Makefile.am
@@ -0,0 +1,79 @@
+##  Makefile.am -- an automake template for Makefile.in file
+##  Copyright (C) 2009 Chris Bagwell and Sane Developers.
+##
+##  This file is part of the "Sane" build infra-structure.  See
+##  included LICENSE file for license information.
+
+AM_CPPFLAGS = -I. -I$(srcdir) -I$(top_builddir)/include \
+ -I$(top_srcdir)/include
+
+bin_PROGRAMS = sane-find-scanner gamma4scanimage
+noinst_PROGRAMS = sane-desc umax_pp
+
+if CROSS_COMPILING
+HOTPLUG =
+HOTPLUG_DIRS =
+HOTPLUG_DIR =
+else
+HOTPLUG = hal/libsane.fdi hotplug/libsane.usermap hotplug-ng/libsane.db \
+	  udev/libsane.rules
+HOTPLUG_DIRS = hal hotplug hotplug-ng udev
+HOTPLUG_DIR = dirs
+endif
+
+bin_SCRIPTS = sane-config
+noinst_SCRIPTS = $(HOTPLUG)
+BUILT_SOURCES = $(HOTPLUG_DIR)
+CLEANFILES = $(bin_SCRIPTS) $(dist_noinst_SCRIPTS)
+
+EXTRA_DIST = check-po.awk libtool-get-dll-ext mustek600iin-off.c \
+	     RenSaneDlls.cmd README xerox
+
+sane_find_scanner_SOURCES = sane-find-scanner.c check-usb-chip.c \
+			    ../backend/sane_strstatus.c
+sane_find_scanner_LDADD = ../sanei/libsanei.la ../lib/liblib.la \
+			  @USB_LIBS@ @IEEE1284_LIBS@ @SCSI_LIBS@
+
+gamma4scanimage_SOURCES = gamma4scanimage.c
+gamma4scanimage_LDADD = @MATH_LIB@
+
+umax_pp_SOURCES = umax_pp.c ../backend/umax_pp_low.c
+umax_pp_CPPFLAGS = $(AM_CPPFLAGS) -DBACKEND_NAME=umax_pp_low
+umax_pp_LDADD = ../sanei/libsanei.la ../lib/liblib.la @MATH_LIB@
+
+sane_desc_SOURCES = sane-desc.c
+sane_desc_LDADD = ../sanei/libsanei.la ../lib/liblib.la
+
+EXTRA_DIST += hotplug/README hotplug/libusbscanner
+EXTRA_DIST += hotplug-ng/README hotplug-ng/libsane.hotplug
+EXTRA_DIST += openbsd/attach openbsd/detach
+
+pkgconfigdir = @libdir@/pkgconfig
+pkgconfig_DATA = sane-backends.pc
+
+# When build directory is not same as source directory then any
+# subdirectories that targets use must be manually created (under
+# the build directory that is).
+dirs:
+	for subdir in $(HOTPLUG_DIRS); do \
+	  $(MKDIR_P) $$subdir || exit 1; \
+	  done
+
+hotplug/libsane.usermap: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m usermap -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 1 > $@
+
+hotplug-ng/libsane.db: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m db -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 0 > $@
+
+udev/libsane.rules: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m udev -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 0 > $@
+
+hal/libsane.fdi: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m hal -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 0 > $@
+
+clean-local:
+	rm -f $(HOTPLUG)
diff --git a/tools/Makefile.in b/tools/Makefile.in
new file mode 100644
index 0000000..367a70b
--- /dev/null
+++ b/tools/Makefile.in
@@ -0,0 +1,916 @@
+# Makefile.in generated by automake 1.13.4 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+
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+am__make_running_with_option = \
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+         exit 1;; \
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+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
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+  skip_next=no; \
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+CONFIG_CLEAN_FILES = sane-config sane-backends.pc
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+am_sane_find_scanner_OBJECTS = sane-find-scanner.$(OBJEXT) \
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+	$(sane_find_scanner_SOURCES) $(umax_pp_SOURCES)
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+LATEX = @LATEX@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIBUSB_1_0_CFLAGS = @LIBUSB_1_0_CFLAGS@
+LIBUSB_1_0_LIBS = @LIBUSB_1_0_LIBS@
+LIBV4L_CFLAGS = @LIBV4L_CFLAGS@
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+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PRELOADABLE_BACKENDS = @PRELOADABLE_BACKENDS@
+PRELOADABLE_BACKENDS_ENABLED = @PRELOADABLE_BACKENDS_ENABLED@
+PTHREAD_LIBS = @PTHREAD_LIBS@
+RANLIB = @RANLIB@
+RESMGR_LIBS = @RESMGR_LIBS@
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+ -I$(top_srcdir)/include
+
+@CROSS_COMPILING_FALSE@HOTPLUG = hal/libsane.fdi hotplug/libsane.usermap hotplug-ng/libsane.db \
+@CROSS_COMPILING_FALSE@	  udev/libsane.rules
+
+@CROSS_COMPILING_TRUE@HOTPLUG = 
+@CROSS_COMPILING_FALSE@HOTPLUG_DIRS = hal hotplug hotplug-ng udev
+@CROSS_COMPILING_TRUE@HOTPLUG_DIRS = 
+@CROSS_COMPILING_FALSE@HOTPLUG_DIR = dirs
+@CROSS_COMPILING_TRUE@HOTPLUG_DIR = 
+bin_SCRIPTS = sane-config
+noinst_SCRIPTS = $(HOTPLUG)
+BUILT_SOURCES = $(HOTPLUG_DIR)
+CLEANFILES = $(bin_SCRIPTS) $(dist_noinst_SCRIPTS)
+EXTRA_DIST = check-po.awk libtool-get-dll-ext mustek600iin-off.c \
+	RenSaneDlls.cmd README xerox hotplug/README \
+	hotplug/libusbscanner hotplug-ng/README \
+	hotplug-ng/libsane.hotplug openbsd/attach openbsd/detach
+sane_find_scanner_SOURCES = sane-find-scanner.c check-usb-chip.c \
+			    ../backend/sane_strstatus.c
+
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) check-am
+all-am: Makefile $(PROGRAMS) $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(bindir)" "$(DESTDIR)$(bindir)" "$(DESTDIR)$(pkgconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+clean: clean-am
+
+clean-am: clean-binPROGRAMS clean-generic clean-libtool clean-local \
+	clean-noinstPROGRAMS mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-pkgconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-binPROGRAMS install-binSCRIPTS
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-binPROGRAMS uninstall-binSCRIPTS \
+	uninstall-pkgconfigDATA
+
+.MAKE: all check install install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean \
+	clean-binPROGRAMS clean-generic clean-libtool clean-local \
+	clean-noinstPROGRAMS cscopelist-am ctags ctags-am distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-binPROGRAMS install-binSCRIPTS \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-pkgconfigDATA install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags tags-am uninstall uninstall-am \
+	uninstall-binPROGRAMS uninstall-binSCRIPTS \
+	uninstall-pkgconfigDATA
+
+
+# When build directory is not same as source directory then any
+# subdirectories that targets use must be manually created (under
+# the build directory that is).
+dirs:
+	for subdir in $(HOTPLUG_DIRS); do \
+	  $(MKDIR_P) $$subdir || exit 1; \
+	  done
+
+hotplug/libsane.usermap: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m usermap -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 1 > $@
+
+hotplug-ng/libsane.db: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m db -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 0 > $@
+
+udev/libsane.rules: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m udev -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 0 > $@
+
+hal/libsane.fdi: $(wildcard ${top_srcdir}/doc/descriptions/*.desc) $(wildcard ${top_srcdir}/doc/descriptions-external/*.desc) sane-desc
+	@./sane-desc -m hal -s ${top_srcdir}/doc/descriptions:${top_srcdir}/doc/descriptions-external \
+	   -d 0 > $@
+
+clean-local:
+	rm -f $(HOTPLUG)
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/tools/README b/tools/README
new file mode 100644
index 0000000..6002113
--- /dev/null
+++ b/tools/README
@@ -0,0 +1,74 @@
+2006-05-10
+
+This directory contains various tools that may be useful:
+
+ hotplug/:
+        Linux hotplug script and an automatically generated config file
+        (libsane.usermap) used to change the permissions on the libusb "device
+        nodes" in /proc/bus/usb/ when a scanner is plugged in. For newer Linux
+        kernels, you may need to use udev instead.  Please read the README file
+        in this directory for instructions.
+
+ hotplug-ng/:
+        Linux hotplug-ng script and an automatically generated config file
+        (libsane.db) used to change the permissions on the libusb "device nodes"
+        in /proc/bus/usb/ when a scanner is plugged in. For newer Linux kernels,
+        you may need to use udev instead.  Please read the README file in this
+        directory for instructions.
+
+ udev/:
+	Contains a automatically generated udev rules file. udev now replaces
+	hotplug and provides all the functionalities of hotplug. libusb 0.1.12
+	or newer is necessary.
+
+ openbsd/:
+ 	Contains example scripts for hotplugd(8) for USB scanners accessed via
+	libusb.
+
+ sane-find-scanner:
+        Attempts to find a SCSI scanner attached to your system.
+        Invoke with "sane-find-scanner -h" to get command-line
+        syntax. More details can be found in the man page
+        sane-find-scanner(1).
+
+ xerox:
+        A simple script to make photocopies ("xeroxing").  In
+        the script, you may need to adjust the device name
+        assigned to variable DEV and the resolution assigned
+        to variable RES as well as the paper with and height
+        (variables WIDTH and HEIGHT, respectively.
+
+ mustek600iin-off:
+        Allows you to turn off a Mustek 600 II N scanner.
+        Use "make mustek600iin-off" to compile.
+
+ umax_pp:
+	Command line utility to scan on UMAX astra 1220P,
+	1600P and 2000P, without using the backend. So that
+	scanner protocol can be tested directly.
+
+ gamma4scanimage: Creates a gamma table in the format expected by scanimage.
+	You can define a gamma value, shadow and highlight. 
+	Take a look at manual page gamma4scanimage for further information.
+
+ RenSaneDlls.cmd: Convert backend-DLL-filenames according to 8.3 naming
+        convention necessary for DLLs on OS/2.
+
+Maybe useful for SANE developers:
+
+ sane-config:
+        Show SANE version, linker flags etc. Might be useful for 
+        frontend developers.
+
+ sane-desc:
+        Generate SANE webpages (and ASCII lists) from backend .desc files.
+        Run "sane-desc --help" for details. The default lists are generated
+        in doc/Makefile. 
+
+ check-po.awk:
+        Print untranslated and fuzzy messages and their line numbers in the
+        source code and po file. Example:
+           cd po/ ; ../tools/check-po.awk sane-backends.de.po
+        You may need to adjust the path of awk in the first line of the
+        script. More documentation is in the script itself.
+
diff --git a/tools/RenSaneDlls.cmd b/tools/RenSaneDlls.cmd
new file mode 100644
index 0000000..2973f85
--- /dev/null
+++ b/tools/RenSaneDlls.cmd
@@ -0,0 +1,33 @@
+/* REXX */
+/* Convert backend-DLL-filenames according to 8.3 naming convention     */
+/* necessary for DLLs on OS/2            (C) Franz Bakan  2004,2005     */
+/*                                                                      */
+/* This file is part of the SANE package.                               */
+/*                                                                      */ 
+/* This program is free software; you can redistribute it and/or        */
+/* modify it under the terms of the GNU General Public License as       */
+/* published by the Free Software Foundation; either version 2 of the   */
+/* License, or (at your option) any later version.                      */
+/*                                                                      */
+/* This program is distributed in the hope that it will be useful, but  */
+/* WITHOUT ANY WARRANTY; without even the implied warranty of           */
+/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU    */
+/* General Public License for more details.                             */
+/*                                                                      */
+/* You should have received a copy of the GNU General Public License    */
+/* along with this program; if not, write to the Free Software          */
+/* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            */
+
+
+CALL RxFuncAdd 'SysLoadFuncs', 'RexxUtil', 'SysLoadFuncs'
+CALL SysLoadFuncs
+
+rc = SysFileTree('\usr\lib\sane\libsane-*.dll',dlls,O)
+DO i=1 TO dlls.0
+  PARSE VALUE dlls.i WITH front 'libsane-' backend '.dll'
+  IF length(backend) > 7 THEN
+    COPY dlls.i front||LEFT(backend,2)||RIGHT(backend,5,' ')||'.dll'
+  ELSE
+     IF length(backend) > 0 THEN COPY dlls.i front||backend||'.dll'
+  DEL dlls.i
+END /* do */
diff --git a/tools/check-po.awk b/tools/check-po.awk
new file mode 100755
index 0000000..25e0728
--- /dev/null
+++ b/tools/check-po.awk
@@ -0,0 +1,173 @@
+#!/bin/awk -f 
+
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License as
+#  published by the Free Software Foundation; either version 2 of the
+#  License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful, but
+#  WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#  General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+#  MA 02111-1307, USA.
+
+
+# This script will (hopefully!) check the completeness of a .po
+# translation file. It will report untranslated strings, as well
+# as fuzzy ones. It will print a summarry at the end of the check
+# that says how many strings there are, how many are translated
+# (and the percentage it represents), how many are fuzzy (and the
+# percentage it represents amongst translated strings), and how
+# many aree un-translated (and the percentage it represents).
+# It will _not_ tell you wether your file is syntactically correct
+# (eg. check for terminating double quotes!). And of course it
+# will _not_ tell you wether the translations are correct! ;-]
+#
+# It was originaly been written for SANE backends translations, but
+# shall be able to check any .po file.
+#
+# Originally writen by Yann E. MORIN 
+# <yann dot morin dot 1998 at anciens dot enib dot fr>
+#
+# Output will look like :
+# [./src/foobar.c:2345](321)- "This is the string"
+#  \____________/ \__/  \_/ |  \________________/
+#   |              |     |  |   |
+#   |              |     |  |   \-> Original untranslated string
+#   |              |     |  |
+#   |              |     |  \-> flag telling wether it is
+#   |              |     |      fuzzy (F) or not (-)
+#   |              |     |
+#   |              |     \-> line number in the .po file
+#   |              |
+#   |              \-> line number in the source file
+#   |
+#   \-> filename where the original string lies
+#
+#
+# Last four lines will look like :
+# Translated     :   23 (23.0%)
+#       of which :    2 fuzzy ( 8.6%)
+# Not translated :   77 (77.0%)
+# Total          :  100
+#
+#
+# TODO:
+#   - Print the fuzzy translated string at the same level as the
+#     untranslated one;
+#   - basic checks about syntax (missing terminating double quotes);
+#   - option for brief mode (only last four lines);
+#   - other?
+
+
+BEGIN \
+{
+  count = 0;
+  fuzzy = 0;
+  is_fuzzy = 0;
+  missing = 0;
+  first = 1;
+}
+
+# Is this translation fuzzy? If so count it
+$1 == "#," && $2 ~ /^fuzzy(|,)$/ \
+{
+  fuzzy++;
+  # Next translation will be fuzzy!
+  is_fuzzy = 1;
+}
+
+$1 == "#:" \
+{
+  file = $2;
+}
+
+# Skip the first msgid as it is no true translation
+$1 ~ /msgid/ && first == 1 \
+{
+  first = 0;
+  next;
+}
+
+$1 ~ /msgid/ && first == 0 \
+{
+  # One more translation
+  count++;
+  line = NR;
+
+  # Gets the untranslated string (with double quotes :-( )
+  $1 = "";
+  original = $0;
+  getline;
+  while( $1 != "msgstr" )
+  {
+    original = original $0
+    getline;
+  }
+
+  # Now extract the translated string (with double quotes as well :-( )
+  $1 = "";
+  translation = $0;
+  # In case  we have no blank line after the last translation (EOF),
+  # we need to stop this silly loop. Allowing a 10-line message.
+  len = 10;
+  getline;
+  while( $0 != "" && $0 !~ /^#/ && len != 0 )
+  {
+    translation = translation $0
+    getline;
+    len--;
+  }
+
+  # Remove double quotes from multi-line messages and translations
+  msg = ""
+  n = split( original, a, "\"" );
+  # start at 2 to get rid of the preceding space
+  for( i=2; i<=n; i++ )
+  {
+    msg = msg a[i];
+  }
+  trans = "";
+  n = split( translation, a, "\"" );
+  # start at 2 to get rid of the preceding space
+  for( i=2; i<=n; i++ )
+  {
+    trans = trans a[i]
+  }
+
+  # Checks wether we have a translation or not, wether it is fuzzy or not
+  if( ( trans == "" ) || ( is_fuzzy == 1 ) )
+  {
+    # Enclose original messages between double quotes
+    printf( "[%s](%d)", file, line );
+    if( is_fuzzy == 1 )
+    {
+      printf( "F" );
+    }
+    else
+    {
+      printf( "-" );
+    }
+    printf( " \"%s\"\n", msg );
+    if( trans == "" )
+    {
+      missing++;
+    }
+  }
+
+  is_fuzzy = 0;
+}
+
+END \
+{
+  # Lines are longer than 80 chars, but I won't cut them
+  printf( "\n" );
+  printf( "Translated     : %4d (%4.1f%%)\n", count-missing, 100.0*(count-missing)/count );
+  printf( "      of which : %4d fuzzy (%4.1f%%)\n", fuzzy, 100*fuzzy/(count-missing) );
+  printf( "Not translated : %4d (%4.1f%%)\n", missing, 100.0*missing/count );
+  printf( "Total          : %4d\n", count );
+}
diff --git a/tools/check-usb-chip.c b/tools/check-usb-chip.c
new file mode 100644
index 0000000..68b8f79
--- /dev/null
+++ b/tools/check-usb-chip.c
@@ -0,0 +1,4128 @@
+/*
+   check-usb-chip.c -- Find out what USB scanner chipset is used
+   
+   Copyright (C) 2003-2005 Henning Meier-Geinitz <henning@meier-geinitz.de>
+   Copyright (C) 2003 Gerhard Jaeger <gerhard@gjaeger.de>
+                      for LM983x tests
+   Copyright (C) 2003 Gerard Klaver <gerard at gkall dot hobby dot nl>
+                      for ICM532B tests
+
+   This file is part of the SANE package.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+*/
+
+
+#include "../include/sane/config.h"
+
+#ifdef HAVE_LIBUSB
+
+#include "../include/sane/sane.h"
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#ifdef HAVE_LUSB0_USB_H
+#include <lusb0_usb.h>
+#else
+#include <usb.h>
+#endif
+
+#include "../include/_stdint.h"
+
+static int verbose = 0;
+static SANE_Bool no_chipset_access;
+#define TIMEOUT 1000
+
+extern char *check_usb_chip (struct usb_device *dev, int verbosity,
+			     SANE_Bool from_file);
+
+static int
+prepare_interface (struct usb_device *dev, usb_dev_handle ** handle)
+{
+  int result;
+
+  if (no_chipset_access)
+    return 0;
+
+  *handle = usb_open (dev);
+  if (*handle == 0)
+    {
+      if (verbose > 1)
+	printf ("    Couldn't open device: %s\n", usb_strerror ());
+      return 0;
+    }
+
+  result =
+    usb_set_configuration (*handle, dev->config[0].bConfigurationValue);
+  if (result < 0)
+    {
+      if (verbose > 1)
+	printf ("  Couldn't set configuration: %s\n", usb_strerror ());
+      usb_close (*handle);
+      return 0;
+    }
+
+  result = usb_claim_interface (*handle, 0);
+  if (result < 0)
+    {
+      if (verbose > 1)
+	printf ("    Couldn't claim interface: %s\n", usb_strerror ());
+      usb_close (*handle);
+      return 0;
+    }
+  return 1;
+}
+
+static void
+finish_interface (usb_dev_handle * handle)
+{
+  usb_release_interface (handle, 0);
+  usb_close (handle);
+}
+
+/* Check for Grandtech GT-6801 */
+static char *
+check_gt6801 (struct usb_device *dev)
+{
+  char req[64];
+  usb_dev_handle *handle;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for GT-6801 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 1)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6801 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  /* Now we send a control message */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "GT-6801?";
+
+  memset (req, 0, 64);
+  req[0] = 0x2e;		/* get identification information */
+  req[1] = 0x01;
+
+  result =
+    usb_control_msg (handle, 0x40, 0x01, 0x2010, 0x3f40, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send write control message (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return 0;
+    }
+  result =
+    usb_control_msg (handle, 0xc0, 0x01, 0x2011, 0x3f00, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send read control message (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return 0;
+    }
+  if (req[0] != 0 || (req[1] != 0x2e && req[1] != 0))
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from control message (%0x/%0x)\n",
+		req[0], req[1]);
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "GT-6801";
+}
+
+/* Check for Grandtech GT-6816 */
+static char *
+check_gt6816 (struct usb_device *dev)
+{
+  char req[64];
+  usb_dev_handle *handle;
+  int result;
+  int i;
+
+  if (verbose > 2)
+    printf ("    checking for GT-6816 ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_PER_INTERFACE)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass !=
+	  USB_CLASS_VENDOR_SPEC))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6816 (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  if (dev->config[0].bNumInterfaces != 0x01)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bNumInterfaces = 0x%x)\n",
+		dev->config[0].bNumInterfaces);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 2)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6816 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6816 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+
+    }
+
+  /* Now we send a control message */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "GT-6816?";
+
+  memset (req, 0, 64);
+  for (i = 0; i < 8; i++)
+    {
+      req[8 * i + 0] = 0x73;	/* check firmware */
+      req[8 * i + 1] = 0x01;
+    }
+
+  result =
+    usb_control_msg (handle, 0x40, 0x04, 0x2012, 0x3f40, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send write control message (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return 0;
+    }
+  result =
+    usb_control_msg (handle, 0xc0, 0x01, 0x2013, 0x3f00, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      /* Before firmware upload, 64 bytes are returned. Some libusb
+	 implementations/operating systems can't seem to cope with short
+	 packets. */
+      result =
+	usb_control_msg (handle, 0xc0, 0x01, 0x2013, 0x3f00, req, 8, TIMEOUT);
+      if (result <= 0)
+	{
+	  if (verbose > 2)
+	    printf ("    Couldn't send read control message (%s)\n",
+		    strerror (errno));
+	  finish_interface (handle);
+	  return 0;
+	}
+    }
+
+  if (req[0] != 0)
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from control message (%0x/%0x)\n",
+		req[0], req[1]);
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "GT-6816";
+}
+
+/* Check for Grandtech GT-8911 */
+static char *
+check_gt8911 (struct usb_device *dev)
+{
+  char req[64];
+  usb_dev_handle *handle;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for GT-8911 ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_PER_INTERFACE)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass !=
+	  USB_CLASS_VENDOR_SPEC))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 1, bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-8911 (check 2, bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 3, bDeviceSubClass = 0x%x)\n",
+	   dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0x00)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 4, bDeviceProtocol = 0x%x)\n",
+	   dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 2)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-8911 (check 5, bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  /* Check first endpoint descriptor block */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 6, bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 7, bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+
+    }
+  if (dev->config[0].bNumInterfaces < 2)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-8911 (check 8, bNumInterfaces = %d)\n",
+		dev->config[0].bNumInterfaces);
+      return 0;
+    }
+  if (dev->config[0].interface[1].num_altsetting < 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-8911 (check 9, num_altsetting = %d)\n",
+		dev->config[0].interface[1].num_altsetting);
+      return 0;
+    }
+
+  /* Check fourth endpoint descriptor block */
+  if ((dev->config[0].interface[1].altsetting[2].endpoint[0].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[1].altsetting[2].endpoint[0].
+	  bmAttributes != 0x01)
+      || (dev->config[0].interface[1].altsetting[2].endpoint[0].
+	  wMaxPacketSize != 0x01d0)
+      || (dev->config[0].interface[1].altsetting[2].endpoint[0].bInterval !=
+	  0x01))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 10, bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[1].altsetting[2].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[1].altsetting[2].endpoint[0].bmAttributes,
+	   dev->config[0].interface[1].altsetting[2].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[1].altsetting[2].endpoint[0].bInterval);
+      return 0;
+    }
+  if ((dev->config[0].interface[1].altsetting[2].endpoint[1].
+       bEndpointAddress != 0x04)
+      || (dev->config[0].interface[1].altsetting[2].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[1].altsetting[2].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[1].altsetting[2].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 11, bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[1].altsetting[2].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[1].altsetting[2].endpoint[1].bmAttributes,
+	   dev->config[0].interface[1].altsetting[2].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[1].altsetting[2].endpoint[1].bInterval);
+      return 0;
+
+    }
+
+  /* Now we send a control message */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "GT-8911?";
+
+  memset (req, 0, 8);
+  req[0] = 0x55;
+  req[1] = 0x66;
+
+  result =
+    usb_control_msg (handle, 0xc0, 0x10, 0x41, 0x0000, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 12, couldn't send read control message (%s))\n",
+	   strerror (errno));
+      finish_interface (handle);
+      return 0;
+    }
+  result =
+    usb_control_msg (handle, 0xc0, 0x10, 0x05, 0x0000, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-8911 (check 13, couldn't send read control message (%s)\n",
+	   strerror (errno));
+      finish_interface (handle);
+      return 0;
+    }
+  /* tested on model hardware version 0xffffffc0, firmware version 0x10)) */
+  if (verbose > 2)
+    printf
+      ("    Check 14, control message (hardware version %0x / firmware version %0x)\n",
+       req[0], req[1]);
+
+  finish_interface (handle);
+  return "GT-8911";
+}
+
+/* Check for Mustek MA-1017 */
+static char *
+check_ma1017 (struct usb_device *dev)
+{
+  char req[2];
+  usb_dev_handle *handle;
+  int result;
+  char res;
+
+  if (verbose > 2)
+    printf ("    checking for MA-1017 ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_PER_INTERFACE)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass !=
+	  USB_CLASS_PER_INTERFACE))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1017 (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x100)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1017 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1017 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1017 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1017 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1017 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x82)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1017 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0x01))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1017 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* read a register value */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "MA-1017?";
+
+  req[0] = 0x00;
+  req[1] = 0x02 | 0x20;
+  result = usb_bulk_write (handle, 0x01, req, 2, 1000);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1017 (Error during bulk write)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  result = usb_bulk_read (handle, 0x82, &res, 1, 1000);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1017 (Error during bulk read)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  /* Read one byte again to work around a bug in the MA-1017 chipset that 
+     appears when an odd number of bytes is read or written. */
+  result = usb_bulk_write (handle, 0x01, req, 2, 1000);
+  result = usb_bulk_read (handle, 0x82, &res, 1, 1000);
+  finish_interface (handle);
+  return "MA-1017";
+}
+
+/* Check for Mustek MA-1015 */
+static char *
+check_ma1015 (struct usb_device *dev)
+{
+  char req[8];
+  usb_dev_handle *handle;
+  int result;
+  unsigned char res;
+
+  if (verbose > 2)
+    printf ("    checking for MA-1015 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x100)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 2)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1015 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x08)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1015 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  /* Now we read register 0 to find out if this is really a MA-1015 */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return 0;
+
+  memset (req, 0, 8);
+  req[0] = 33;
+  req[1] = 0x00;
+  result = usb_bulk_write (handle, 0x02, req, 8, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (Error during bulk write)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  result = usb_bulk_read (handle, 0x81, (char *) &res, 1, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (Error during bulk read)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  if (res != 0xa5)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1015 (got 0x%x, expected 0xa5)\n", res);
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "MA-1015";
+}
+
+/* Check for Mustek MA-1509 */
+static char *
+check_ma1509 (struct usb_device *dev)
+{
+  char req[8];
+  char inquiry[0x60];
+  usb_dev_handle *handle;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for MA-1509 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1509 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x08))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1509 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x08)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0x10))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a MA-1509 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* This is a SCSI-over-USB chip, we'll read the inquiry */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "MA-1509?";
+
+  memset (req, 0, 8);
+  req[0] = 0x12;
+  req[1] = 1;
+  req[6] = 0x60;
+
+  result = usb_bulk_write (handle, 0x02, req, 8, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (Error during bulk write)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  memset (inquiry, 0, 0x60);
+  result = usb_bulk_read (handle, 0x81, (char *) inquiry, 0x60, TIMEOUT);
+  if (result != 0x60)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (Error during bulk read: %d)\n",
+		result);
+      finish_interface (handle);
+      return 0;
+    }
+  if ((inquiry[0] & 0x1f) != 0x06)
+    {
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (inquiry [0] = %d)\n", inquiry[0]);
+      finish_interface (handle);
+      return 0;
+    }
+  if (strncmp (inquiry + 8, "SCANNER ", 8) != 0)
+    {
+      inquiry[16] = 0;
+      if (verbose > 2)
+	printf ("    this is not a MA-1509 (vendor=%s)\n", inquiry + 8);
+      finish_interface (handle);
+      return 0;
+    }
+  inquiry[36] = 0;
+  if (verbose > 2)
+    printf ("    MA-1509 version %s\n", inquiry + 32);
+
+  finish_interface (handle);
+  return "MA-1509";
+}
+
+/********** the lm983x section **********/
+
+static int
+lm983x_wb (usb_dev_handle * handle, unsigned char reg, unsigned char val)
+{
+  unsigned char buf[5];
+  int result;
+
+  buf[0] = 0;
+  buf[1] = reg;
+  buf[2] = 0;
+  buf[3] = 1;
+  buf[4] = val;
+
+  result = usb_bulk_write (handle, 3, (char *) buf, 5, TIMEOUT);
+  if (result != 5)
+    return 0;
+
+  return 1;
+}
+
+static int
+lm983x_rb (usb_dev_handle * handle, unsigned char reg, unsigned char *val)
+{
+  unsigned char buf[5];
+  int result;
+
+  buf[0] = 1;
+  buf[1] = reg;
+  buf[2] = 0;
+  buf[3] = 1;
+
+  result = usb_bulk_write (handle, 3, (char *) buf, 4, TIMEOUT);
+  if (result != 4)
+    return 0;
+
+
+  result = usb_bulk_read (handle, 2, (char *) val, 1, TIMEOUT);
+  if (result != 1)
+    return 0;
+
+  return 1;
+}
+
+static char *
+check_merlin (struct usb_device *dev)
+{
+  unsigned char val;
+  int result;
+  usb_dev_handle *handle;
+
+  if (verbose > 2)
+    printf ("    checking for LM983[1,2,3] ...\n");
+
+  /* Check device descriptor */
+  if (((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+       && (dev->descriptor.bDeviceClass != 0))
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass !=
+	  USB_CLASS_VENDOR_SPEC))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a LM983x (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if ((dev->descriptor.bcdUSB != 0x110)
+      && (dev->descriptor.bcdUSB != 0x101)
+      && (dev->descriptor.bcdUSB != 0x100))
+    {
+      if (verbose > 2)
+	printf ("    this is not a LM983x (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a LM983x (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if ((dev->descriptor.bDeviceProtocol != 0) &&
+      (dev->descriptor.bDeviceProtocol != 0xff))
+    {
+      if (verbose > 2)
+	printf ("    this is not a LM983x (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a LM983x (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x1)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x10))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a LM983x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x82)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      /* Currently disabled as we have some problems in detection here ! */
+      /*|| (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval != 0) */
+    )
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a LM983x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x40)
+      /* Currently disabled as we have some problems in detection here ! */
+      /* || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval != 0) */
+    )
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a LM983x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "LM983x?";
+
+  result = lm983x_wb (handle, 0x07, 0x00);
+  if (1 == result)
+    result = lm983x_wb (handle, 0x08, 0x02);
+  if (1 == result)
+    result = lm983x_rb (handle, 0x07, &val);
+  if (1 == result)
+    result = lm983x_rb (handle, 0x08, &val);
+  if (1 == result)
+    result = lm983x_rb (handle, 0x69, &val);
+
+  if (0 == result)
+    {
+      if (verbose > 2)
+	printf ("  Couldn't access LM983x registers.\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  finish_interface (handle);
+
+  switch (val)
+    {
+    case 4:
+      return "LM9832/3";
+      break;
+    case 3:
+      return "LM9831";
+      break;
+    case 2:
+      return "LM9830";
+      break;
+    default:
+      return "LM983x?";
+      break;
+    }
+}
+
+/********** the gl646 section **********/
+
+
+static int
+gl646_write_reg (usb_dev_handle * handle, unsigned char reg,
+		 unsigned char val)
+{
+  int result;
+
+  result =
+    usb_control_msg (handle, 0x00, 0x00, 0x83, 0x00, (char *) &reg, 0x01,
+		     TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  result =
+    usb_control_msg (handle, 0x00, 0x00, 0x85, 0x00, (char *) &val, 0x01,
+		     TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  return 1;
+}
+
+static int
+gl646_read_reg (usb_dev_handle * handle, unsigned char reg,
+		unsigned char *val)
+{
+  int result;
+
+  result =
+    usb_control_msg (handle, 0x00, 0x00, 0x83, 0x00, (char *) &reg, 0x01,
+		     TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  result =
+    usb_control_msg (handle, 0x80, 0x00, 0x84, 0x00, (char *) val, 0x01,
+		     TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  return 1;
+}
+
+
+static char *
+check_gl646 (struct usb_device *dev)
+{
+  unsigned char val;
+  int result;
+  usb_dev_handle *handle;
+
+  if (verbose > 2)
+    printf ("    checking for GL646 ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_PER_INTERFACE)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass != 0x10))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x1)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  8))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "GL646?";
+
+  result = gl646_write_reg (handle, 0x38, 0x15);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (writing register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  result = gl646_read_reg (handle, 0x4e, &val);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (reading register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (val != 0x15)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (reg 0x4e != reg 0x38)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "GL646";
+}
+
+/* Same as check_gl646, except that sanity check are different. */
+static char *
+check_gl646_hp (struct usb_device *dev)
+{
+  unsigned char val;
+  int result;
+  usb_dev_handle *handle;
+
+  if (verbose > 2)
+    printf ("    checking for GL646_HP ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != 0xff)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass != 0xff))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646_HP (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646_HP (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646_HP (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x1)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  8))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646_HP (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "GL646_HP?";
+
+  result = gl646_write_reg (handle, 0x38, 0x15);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (writing register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  result = gl646_read_reg (handle, 0x4e, &val);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (reading register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (val != 0x15)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646_HP (reg 0x4e != reg 0x38)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  finish_interface (handle);
+
+  return "GL646_HP";
+}
+
+/* check for the combination of gl660 and gl646 */
+static char *
+check_gl660_gl646 (struct usb_device *dev)
+{
+  unsigned char val;
+  int result;
+  usb_dev_handle *handle;
+
+  if (verbose > 2)
+    printf ("    checking for GL660+GL646 ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass !=
+	  USB_CLASS_PER_INTERFACE))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL660+GL646 (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x200)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      ||
+      ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+	wMaxPacketSize != 0x40)
+       && (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL660+GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      ||
+      ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+	wMaxPacketSize != 0x40)
+       && (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL660+GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      ||
+      ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+	wMaxPacketSize != 0x1)
+       && (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  8))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL660+GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "GL660+GL646?";
+
+  result = gl646_write_reg (handle, 0x38, 0x15);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (writing register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  result = gl646_read_reg (handle, 0x4e, &val);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (reading register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (val != 0x15)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL660+GL646 (reg 0x4e != reg 0x38)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "GL660+GL646";
+}
+
+
+/********** the gl841 section **********/
+
+/* the various incarnations could be distinguished by the 
+ * bcdDevice entry:
+ *    0x701 --> GL124
+ *    0x700 --> ?
+ *    0x605 --> GL845
+ *    0x603 --> GL847
+ *    0x601 --> GL846 
+ *    0x500 --> GL843 
+ *    0x300 --> GL842 (perhaps only >= 0x303 ?)
+ *    0x200 --> GL841
+ */
+static char *
+check_gl841 (struct usb_device *dev)
+{
+  unsigned char val;
+  int result;
+  usb_dev_handle *handle;
+
+  if (verbose > 2)
+    printf ("    checking for GL84x ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass !=
+	  USB_CLASS_VENDOR_SPEC))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL84x (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x200)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize != 0x40) &&
+	  (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL84x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize != 0x40) &&
+	  (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL84x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x1)
+      ||
+      ((dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval != 8)
+       && (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	   16)))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL84x (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result) {
+    if (dev->descriptor.bcdDevice == 0x702)
+        return "GL124?";
+    if (dev->descriptor.bcdDevice == 0x701)
+        return "GL124?";
+    if (dev->descriptor.bcdDevice >= 0x700)
+	return "GL848+?";
+    if (dev->descriptor.bcdDevice >= 0x603)
+	return "GL847?";
+    if (dev->descriptor.bcdDevice >= 0x600)
+	return "GL846?";
+    if (dev->descriptor.bcdDevice >= 0x500)
+	return "GL845?";
+    if (dev->descriptor.bcdDevice >= 0x400)
+	return "GL843?";
+    if (dev->descriptor.bcdDevice >= 0x300)
+	return "GL842?";
+    else
+	return "GL841?";
+  }
+
+  result = gl646_write_reg (handle, 0x38, 0x15);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (writing register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  result = gl646_read_reg (handle, 0x38, &val);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (reading register failed)\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (val != 0x15)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL84x (reg 0x38 != 0x15)\n");
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+
+  if (dev->descriptor.bcdDevice == 0x702)
+    return "GL128";
+  if (dev->descriptor.bcdDevice == 0x701)
+    return "GL124";
+  if (dev->descriptor.bcdDevice >= 0x700)
+    return "GL848+";
+  if (dev->descriptor.bcdDevice >= 0x605)
+    return "GL845";
+  if (dev->descriptor.bcdDevice >= 0x603)
+    return "GL847";
+  if (dev->descriptor.bcdDevice >= 0x600)
+    return "GL846";
+  if (dev->descriptor.bcdDevice >= 0x500)
+    return "GL843";
+  if (dev->descriptor.bcdDevice >= 0x300)
+    return "GL842";
+  return "GL841";
+}
+
+
+/********** the icm532b section version 0.2 **********/
+/*          no write and read test registers yet     */
+
+static char *
+check_icm532b (struct usb_device *dev)
+{
+  int result;
+  usb_dev_handle *handle;
+
+  if (verbose > 2)
+    printf ("    checking for ICM532B ...\n");
+
+  /* Check device descriptor */
+  if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+      || (dev->config[0].interface[0].altsetting[0].bInterfaceClass != 0xff))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 1, bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   dev->descriptor.bDeviceClass,
+	   dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a ICM532B (check 2, bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 3, bDeviceSubClass = 0x%x)\n",
+	   dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 4, bDeviceProtocol = 0x%x)\n",
+	   dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 0x01)
+    {
+      if (verbose > 2)
+	printf ("    this is not a ICM532B (check 5, bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  /* Check bEndpointAddress */
+  if (dev->config[0].interface[0].altsetting[0].endpoint[0].
+      bEndpointAddress != 0x81)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 6, bEndpointAddress = %d)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress);
+      return 0;
+    }
+  /* Check bmAttributes */
+  if (dev->config[0].interface[0].altsetting[0].endpoint[0].
+      bmAttributes != 0x01)
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 7, bEndpointAddress = %d)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bmAttributes);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].bAlternateSetting != 0x00)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 8, bAlternateSetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[1].bAlternateSetting != 0x01)
+      || (dev->config[0].interface[0].altsetting[1].endpoint[0].
+	  wMaxPacketSize != 0x100))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 9, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[1].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[1].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[2].bAlternateSetting != 0x02)
+      || (dev->config[0].interface[0].altsetting[2].endpoint[0].
+	  wMaxPacketSize != 0x180))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 10, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[2].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[2].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[3].bAlternateSetting != 0x03)
+      || (dev->config[0].interface[0].altsetting[3].endpoint[0].
+	  wMaxPacketSize != 0x200))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 11, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[3].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[3].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[4].bAlternateSetting != 0x04)
+      || (dev->config[0].interface[0].altsetting[4].endpoint[0].
+	  wMaxPacketSize != 0x280))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 12, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[4].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[4].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[5].bAlternateSetting != 0x05)
+      || (dev->config[0].interface[0].altsetting[5].endpoint[0].
+	  wMaxPacketSize != 0x300))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 13, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[5].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[5].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[6].bAlternateSetting != 0x06)
+      || (dev->config[0].interface[0].altsetting[6].endpoint[0].
+	  wMaxPacketSize != 0x380))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 14, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[6].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[6].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[7].bAlternateSetting != 0x07)
+      || (dev->config[0].interface[0].altsetting[7].endpoint[0].
+	  wMaxPacketSize != 0x3ff))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a ICM532B (check 15, bAlternatesetting = 0x%x, wMaxPacketSize = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[7].bAlternateSetting,
+	   dev->config[0].interface[0].altsetting[7].endpoint[0].
+	   wMaxPacketSize);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "ICM532B?";
+
+  finish_interface (handle);
+  return "ICM532B";
+}
+/* ====================================== end of icm532b ==================*/
+
+
+/* Check for the combination of a PowerVision PV8630 (USB->parport bridge)
+   and National Semiconductor LM9830 */
+static char *
+check_pv8630_lm9830 (struct usb_device *dev)
+{
+  usb_dev_handle *handle;
+  int result;
+  char data;
+
+  if (verbose > 2)
+    printf ("    checking for PV8630/LM9830 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != USB_CLASS_PER_INTERFACE)
+    {
+      if (verbose > 2)
+	printf ("    this is not a PV8630/LM9830 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x100)
+    {
+      if (verbose > 2)
+	printf ("    this is not a PV8630/LM9830 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a PV8630/LM9830 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a PV8630/LM9830 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a PV8630/LM9830 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  /* Endpoint 0 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a PV8630/LM9830 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+  /* Endpoint 1 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x82)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a PV8630/LM9830 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+  /* Endpoint 2 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0x01))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a PV8630/LM9830 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* Now we write/read a register (red offset) */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "PV8630/LM9830?";
+
+  result = 
+    usb_control_msg (handle, 0x40, 0x01, 0x38, 0x01, NULL, 0, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send write register number (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  result =
+    usb_control_msg (handle, 0x40, 0x01, 0x0f, 0x00,  NULL, 0, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send register data (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  result = 
+    usb_control_msg (handle, 0x40, 0x01, 0x38, 0x01, NULL, 0, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send read register number (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  result =
+    usb_control_msg (handle, 0xc0, 0x00, 0, 0x00, &data, 1, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read register data (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (data != 0x0f)
+    {
+      if (verbose > 2)
+	printf ("    Data read != data written (%d/%d)\n", data, 0x0f);
+      finish_interface (handle);
+      return 0;
+    }
+
+  finish_interface (handle);
+  return "PV8630/LM9830";
+}
+
+
+/* Check for Toshiba M011 */
+static char *
+check_m011 (struct usb_device *dev)
+{
+  usb_dev_handle *handle;
+  int result;
+  char data;
+
+  if (verbose > 2)
+    printf ("    checking for M011 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a M011 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x100)
+    {
+      if (verbose > 2)
+	printf ("    this is not a M011 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != USB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a M011 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != USB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a M011 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 1)
+    {
+      if (verbose > 2)
+	printf ("    this is not a M011 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  /* Endpoint 0 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x82)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a M011 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  /* Now we write/read a register (red offset) */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "M011?";
+
+  data = 0x63;
+
+  result = 
+    usb_control_msg (handle, 0x40, 0x08, 0x34, 0x00, &data, 1, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't write register (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+  data = 0;
+
+  result =
+    usb_control_msg (handle, 0xc0, 0x00, 0x34, 0x00, &data, 1, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read register (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (data != 0x63)
+    {
+      if (verbose > 2)
+	printf ("    Data read != data written (%d/%d)\n", data, 0x63);
+      finish_interface (handle);
+      return 0;
+    }
+
+  finish_interface (handle);
+  return "M011";
+}
+
+
+/* Check for Realtek rts88xx */
+static int
+rts88xx_read_reg (usb_dev_handle * handle, unsigned char *req, unsigned char *res, int size)
+{
+  int result;
+
+  result =
+    usb_bulk_write (handle, 0x02, (char *)req, 0x04, TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  result =
+    usb_bulk_read (handle,  0x81, (char *)res, size, TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  return 1;
+}
+
+static char *
+check_rts8858c (struct usb_device *dev)
+{
+  unsigned char req[4];
+  unsigned char res[10];
+  usb_dev_handle *handle;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for rts8858c ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8858c (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8858c (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8858c (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8858c (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8858c (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a rts8858c (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x08)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a rts8858c (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0xFA))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a rts8858c (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* Now we read 10 registers */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "rts8858c?";
+
+  memset (req, 0, 4);
+  req[0] = 0x80;		/* get registers 0x12-0x1c */
+  req[1] = 0x12;
+  req[2] = 0x00;
+  req[3] = 0x0a;
+
+  result = rts88xx_read_reg(handle,req,res,req[3]);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read registers\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  if (res[1] != 0x03 || res[2] != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from register reading (0x%0x/0x%0x)\n",
+		res[1], res[2]);
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "rts8858c";
+}	/* end of rts8858 detection */
+
+static char *
+check_rts88x1 (struct usb_device *dev)
+{
+  unsigned char req[4];
+  unsigned char res[243];
+  usb_dev_handle *handle;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for rts8801/rts8891 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8801/rts8891 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8801/rts8891 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8801/rts8891 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8801/rts8891 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a rts8801/rts8891 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a rts8801/rts8891 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x08)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a rts8801/rts8891 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0xFA))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a rts8801/rts8891 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* Now we read 10 registers */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "rts8801/rts8891?";
+
+  memset (req, 0, 4);
+  req[0] = 0x80;		/* get registers 0x00-0xF2 */
+  req[1] = 0x00;
+  req[2] = 0x00;
+  req[3] = 0xf3;
+
+  result = rts88xx_read_reg(handle,req,res,req[3]);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read registers\n");
+      finish_interface (handle);
+      return 0;
+    }
+
+  /* test CCD and link registers */
+  if (res[0xb0] != 0x80 || ((res[0] & 0x0f)!=0x05))
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from register reading (0x%0x/0x%0x)\n",
+		res[0xb0], res[2]);
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "rts8801/rts8891";
+}	/* end of rts8801/rts8891 detection */
+
+
+/* Check for Service & Quality SQ113 */
+static char *
+check_sq113 (struct usb_device *dev)
+{
+  usb_dev_handle *handle;
+  int result;
+  unsigned char data;
+  unsigned char buffer[4];
+
+  if (verbose > 2)
+    printf ("    checking for SQ113 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x200)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check interface */
+  if (dev->config[0].interface[0].altsetting[0].bInterfaceClass != 255)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bInterfaceClass = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+
+  if (dev->config[0].interface[0].altsetting[0].bInterfaceSubClass != 255)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bInterfaceSubClass = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bInterfaceSubClass);
+      return 0;
+    }
+  if (dev->config[0].interface[0].altsetting[0].bInterfaceProtocol != 255)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bInterfaceProtocol = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bInterfaceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a SQ113 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  /* Endpoint 0 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x40)
+	  && (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	      wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a SQ113 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  /* Endpoint 1 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x82)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x40)
+	  && (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	      wMaxPacketSize != 0x200))
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a SQ113 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+  /* Endpoint 2 */
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x1)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0x03))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a SQ113 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* Now we read the status register */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "SQ113?";
+  
+  buffer [0] = 0x5f;
+  buffer [1] = 0x00;
+  buffer [2] = 0x5f;
+  buffer [3] = 0x00;
+
+  result = 
+    usb_control_msg (handle, 0x40, 0x01, 0xb0, 0, (char *) buffer, 4, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't set bank (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  data = 0x00;
+
+  buffer [0] = 0x8b;
+  buffer [1] = data;
+  buffer [2] = 0x8b;
+  buffer [3] = data;
+
+  result = 
+    usb_control_msg (handle, 0x40, 0x01, 0xb0, 0, (char *) buffer, 4, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't write register (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  buffer [0] = 0x8b;
+  buffer [1] = 0x8b;
+  buffer [2] = 0x8b;
+  buffer [3] = 0x8b;
+  result = 
+    usb_control_msg (handle, 0x40, 0x01, 0x04, 0x8b, (char *) buffer, 4, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't set read register address (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  result = 
+    usb_control_msg (handle, 0xc0, 0x01, 0x07, 0, (char *) buffer, 4, TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read register (%s)\n",
+		usb_strerror ());
+      finish_interface (handle);
+      return 0;
+    }
+
+  if ((buffer[0] & 0x10) != 0x10)
+    {
+      if (verbose > 2)
+	printf ("    Sensor not home? (0x%02x)\n", buffer[0]);
+      finish_interface (handle);
+      return 0;
+    }
+
+  finish_interface (handle);
+  return "SQ113";
+}
+
+/* Check for Realtek RTS8822 chipset*/
+static char *
+check_rts8822 (struct usb_device *dev)
+{
+  char data[2];
+  usb_dev_handle *handle;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for RTS8822 ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a RTS8822 (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if ((dev->descriptor.bcdUSB != 0x200)&&(dev->descriptor.bcdUSB != 0x110))
+    {
+      if (verbose > 2)
+	printf ("    this is not a RTS8822 (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a RTS8822 (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a RTS8822 (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a RTS8822 (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x200)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a RTS8822 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x200)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a RTS8822 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0x0c))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a RTS8822 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  /* Now we read 1 register */
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return "RTS8822?";
+
+  memset (data, 0, 2);
+
+  result =
+    usb_control_msg(handle, 0xc0, 0x04, 0xfe11, 0x100, data, 0x02, TIMEOUT);
+
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send read control message (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return 0;
+    }
+
+  if ((data[0] == 0)&&(data[1] == 0))
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from register 0xfe11 : 0x%0x%0x\n",
+		data[1], data[0]);
+      finish_interface (handle);
+      return 0;
+    }
+  finish_interface (handle);
+  return "RTS8822";
+}	/* end of RTS8822 detection */
+
+/* Check for Silitek chipset found in HP ScanJet 4500C/4570C/5500C/5550C/5590/7650 scanners */
+static char *
+check_hp5590 (struct usb_device *dev)
+{
+  usb_dev_handle	*handle;
+  int			result;
+  uint8_t		status;
+  struct usb_ctrl_setup ctrl;
+  uint8_t		data[0x32];
+  uint8_t		ack;
+  uint8_t		*ptr;
+  int			next_packet_size;
+  unsigned int		len;
+#define HP5590_NAMES	"HP4500C/4570C/5500C/5550C/5590/7650"
+
+  if (verbose > 2)
+    printf ("    checking for " HP5590_NAMES " chipset ...\n");
+
+  /* Check device descriptor */
+  if (dev->descriptor.bDeviceClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a " HP5590_NAMES " chipset (bDeviceClass = %d)\n",
+		dev->descriptor.bDeviceClass);
+      return 0;
+    }
+  if (dev->descriptor.bcdUSB != 0x200)
+    {
+      if (verbose > 2)
+	printf ("    this is not a " HP5590_NAMES " chipset (bcdUSB = 0x%x)\n",
+		dev->descriptor.bcdUSB);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a " HP5590_NAMES " chipset (bDeviceSubClass = 0x%x)\n",
+		dev->descriptor.bDeviceSubClass);
+      return 0;
+    }
+  if (dev->descriptor.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a " HP5590_NAMES " chipset (bDeviceProtocol = 0x%x)\n",
+		dev->descriptor.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (dev->config[0].interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a " HP5590_NAMES " chipset (bNumEndpoints = %d)\n",
+		dev->config[0].interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[0].
+       bEndpointAddress != 0x81)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].
+	  wMaxPacketSize != 0x200)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a " HP5590_NAMES " chipset (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[1].
+       bEndpointAddress != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  bmAttributes != 0x02)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].
+	  wMaxPacketSize != 0x200)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval !=
+	  0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a " HP5590_NAMES " chipset (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((dev->config[0].interface[0].altsetting[0].endpoint[2].
+       bEndpointAddress != 0x83)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  bmAttributes != 0x03)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].
+	  wMaxPacketSize != 0x01)
+      || (dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval !=
+	  0x08))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a " HP5590_NAMES " chipset (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   bEndpointAddress,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].
+	   wMaxPacketSize,
+	   dev->config[0].interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = prepare_interface (dev, &handle);
+  if (!result)
+    return NULL;
+
+  /* USB-in-USB command URB - command 0x0012 (init scanner), returns 0x32 bytes */
+  memset (&ctrl, 0, sizeof(ctrl));
+  ctrl.bRequestType = 0xc0;
+  ctrl.bRequest = 0x04;
+  ctrl.wValue = 0x1200;
+  ctrl.wIndex = 0x00;
+  ctrl.wLength = sizeof(data);
+  result = usb_control_msg (handle, USB_ENDPOINT_OUT | USB_TYPE_VENDOR,
+			    0x04, 0x8f, 0x00,
+			    (char *) &ctrl, sizeof (ctrl), TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send send USB-in-USB command (%s)\n",
+		strerror (errno));
+      return NULL;
+    }
+
+  /* Get confirmation for USB-in-USB command */
+  result = usb_control_msg (handle, USB_ENDPOINT_IN | USB_TYPE_VENDOR, 
+			    0x0c, 0x8e, 0x20,
+			    (char *) &status, sizeof(status), TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read USB-in-USB confirmation (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return NULL;
+    }
+
+  /* Check the confirmation received */
+  if (status != 0x01)
+    {
+      if (verbose > 2)
+	printf ("    Didn't get correct confirmation for USB-in-USB command "
+		"(needed: 0x01, got: 0x%02x\n",
+		status);
+      finish_interface (handle);
+      return NULL;
+    }
+
+  /* Read data in 8 byte packets */
+  ptr = data;
+  len = sizeof(data);
+  while (len)
+    {
+      next_packet_size = 8;
+      if (len < 8)
+	next_packet_size = len;
+
+      /* Read data packet */
+      result = usb_control_msg (handle, USB_ENDPOINT_IN | USB_TYPE_VENDOR,
+				0x04, 0x90, 0x00,
+				(char *) ptr, next_packet_size, TIMEOUT);
+      if (result < 0)
+	{
+	  if (verbose > 2)
+	    printf ("    Couldn't read USB-in-USB data (%s)\n",
+		    strerror (errno));
+	  finish_interface (handle);
+	  return NULL;
+	}
+
+      /* Check if all of the requested data was received */
+      if (result != next_packet_size)
+	{
+	  if (verbose > 2)
+	    printf ("    Incomplete USB-in-USB data received (needed: %u, got: %u)\n",
+		    next_packet_size, result);
+	  finish_interface (handle);
+	  return NULL;
+	}
+
+      ptr += next_packet_size;
+      len -= next_packet_size;
+    }
+
+  /* Acknowledge the whole received data */
+  ack = 0;
+  result = usb_control_msg (handle, USB_ENDPOINT_OUT | USB_TYPE_VENDOR,
+			    0x0c, 0x8f, 0x00,
+			    (char *) &ack, sizeof(ack), TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send USB-in-USB data confirmation (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return NULL;
+    }
+
+  /* Get confirmation for acknowledge */
+  result = usb_control_msg (handle, USB_ENDPOINT_IN | USB_TYPE_VENDOR,
+			    0x0c, 0x8e, 0x20,
+			    (char *) &status, sizeof(status), TIMEOUT);
+  if (result < 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't read USB-in-USB confirmation for data confirmation (%s)\n",
+		strerror (errno));
+      finish_interface (handle);
+      return NULL;
+    }
+
+  /* Check the confirmation received */
+  if (status != 0x01)
+    {
+      if (verbose > 2)
+	printf ("    Didn't get correct confirmation for USB-in-USB command "
+		"(needed: 0x01, got: 0x%02x\n",
+		status);
+      finish_interface (handle);
+      return NULL;
+    }
+
+  /* Check vendor ID */
+  if (memcmp (data+1, "SILITEK", 7) != 0)
+    {
+      if (verbose > 2)
+	printf ("   Incorrect product ID received\n");
+      finish_interface (handle);
+      return NULL;
+    }
+
+  finish_interface (handle);
+  return HP5590_NAMES;
+}
+
+char *
+check_usb_chip (struct usb_device *dev, int verbosity, SANE_Bool from_file)
+{
+  char *chip_name = 0;
+
+  verbose = verbosity;
+  no_chipset_access = from_file;
+
+  if (verbose > 2)
+    printf ("\n<trying to find out which USB chip is used>\n");
+
+  chip_name = check_gt6801 (dev);
+
+  if (!chip_name)
+    chip_name = check_gt6816 (dev);
+
+  if (!chip_name)
+    chip_name = check_gt8911 (dev);
+
+  if (!chip_name)
+    chip_name = check_ma1017 (dev);
+
+  if (!chip_name)
+    chip_name = check_ma1015 (dev);
+
+  if (!chip_name)
+    chip_name = check_ma1509 (dev);
+
+  if (!chip_name)
+    chip_name = check_merlin (dev);
+
+  if (!chip_name)
+    chip_name = check_gl646 (dev);
+
+  if (!chip_name)
+    chip_name = check_gl646_hp (dev);
+
+  if (!chip_name)
+    chip_name = check_gl660_gl646 (dev);
+
+  if (!chip_name)
+    chip_name = check_gl841 (dev);
+
+  if (!chip_name)
+    chip_name = check_icm532b (dev);
+
+  if (!chip_name)
+    chip_name = check_pv8630_lm9830 (dev);
+
+  if (!chip_name)
+    chip_name = check_m011 (dev);
+
+  if (!chip_name)
+    chip_name = check_rts8822 (dev);
+
+  if (!chip_name)
+    chip_name = check_rts8858c (dev);
+
+  if (!chip_name)
+    chip_name = check_sq113 (dev);
+
+  if (!chip_name)
+    chip_name = check_hp5590 (dev);
+
+  if (!chip_name)
+    chip_name = check_rts88x1 (dev);
+
+  if (verbose > 2)
+    {
+      if (chip_name)
+	printf ("<This USB chip looks like a %s (result from %s)>\n\n",
+		chip_name, PACKAGE_STRING);
+      else
+	printf ("<Couldn't determine the type of the USB chip (result from %s)>\n\n",
+		PACKAGE_STRING);
+    }
+
+  return chip_name;
+}
+
+#endif /* HAVE_LIBUSB */
+
+#ifdef HAVE_LIBUSB_1_0
+
+#include <libusb.h>
+
+#include "../include/sane/sane.h"
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "../include/_stdint.h"
+
+#define TIMEOUT 1000
+
+
+/** @brief detect used chip
+ *
+ * Try to detect the chip used by a device that looks like a scanner by
+ * trying some basic operation like reading/writing registers.
+ * @param dev libusb_device to probe
+ * @param verbosity level of messages verbosity
+ * @param from_file SANE_True if data read from file
+ * @return a string containing the name of the detected scanner chip
+ */
+char *check_usb_chip (int verbosity,
+		      struct libusb_device_descriptor desc,
+		      libusb_device_handle * hdl,
+		      struct libusb_config_descriptor *config0);
+
+static int verbose = 0;
+
+static int
+genesys_write_reg (libusb_device_handle * handle, unsigned char reg,
+		   unsigned char val)
+{
+  int result;
+  unsigned char data[2];
+
+  data[0] = reg;
+  data[1] = val;
+
+  result = libusb_control_transfer (handle,
+				    0x40,
+				    0x04, 0x83, 0x00, data, 0x02, TIMEOUT);
+  if (result < 0)
+    return 0;
+  return 1;
+}
+
+static int
+genesys_read_reg (libusb_device_handle * handle, unsigned char reg,
+		  unsigned char *val)
+{
+  int result;
+
+  result = libusb_control_transfer (handle,
+				    0x40,
+				    0x0c, 0x83, 0x00, &reg, 0x01, TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  result = libusb_control_transfer (handle,
+				    0xc0,
+				    0x0c, 0x84, 0x00, val, 0x01, TIMEOUT);
+  if (result < 0)
+    return 0;
+
+  return 1;
+}
+
+/** @brief check for genesys GL646 chips
+ *
+ * @param dev libusb device
+ * @param hdl libusb opened handle
+ * @param config0 configuration 0 from get config _descriptor
+ * @return a string with ASIC name, or NULL if not recognized
+ */
+static char *
+check_gl646 (libusb_device_handle * handle,
+	     struct libusb_device_descriptor desc,
+	     struct libusb_config_descriptor *config0)
+{
+  unsigned char val;
+  int result;
+
+  if (desc.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bcdUSB = 0x%x)\n", desc.bcdUSB);
+      return 0;
+    }
+  if (desc.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bDeviceSubClass = 0x%x)\n",
+		desc.bDeviceSubClass);
+      return 0;
+    }
+  if (desc.bDeviceProtocol != 0)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bDeviceProtocol = 0x%x)\n",
+		desc.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (config0->interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (bNumEndpoints = %d)\n",
+		config0->interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+
+  if ((config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress !=
+       0x81)
+      || (config0->interface[0].altsetting[0].endpoint[0].bmAttributes !=
+	  0x02)
+      || (config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize !=
+	  0x40)
+      || (config0->interface[0].altsetting[0].endpoint[0].bInterval != 0x0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  if ((config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress !=
+       0x02)
+      || (config0->interface[0].altsetting[0].endpoint[1].bmAttributes !=
+	  0x02)
+      || (config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize !=
+	  0x40)
+      || (config0->interface[0].altsetting[0].endpoint[1].bInterval != 0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  if ((config0->interface[0].altsetting[0].endpoint[2].bEndpointAddress !=
+       0x83)
+      || (config0->interface[0].altsetting[0].endpoint[2].bmAttributes !=
+	  0x03)
+      || (config0->interface[0].altsetting[0].endpoint[2].wMaxPacketSize !=
+	  0x1)
+      || (config0->interface[0].altsetting[0].endpoint[2].bInterval != 8))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GL646 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[2].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[2].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[2].bInterval);
+      return 0;
+    }
+
+  result = genesys_write_reg (handle, 0x38, 0x15);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (writing register failed)\n");
+      return 0;
+    }
+
+  result = genesys_read_reg (handle, 0x4e, &val);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (reading register failed)\n");
+      return 0;
+    }
+
+  if (val != 0x15)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GL646 (reg 0x4e != reg 0x38)\n");
+      return 0;
+    }
+
+  return "GL646";
+}
+
+/** @brief check for gt6801 chip
+ *
+ * @param dev libusb device
+ * @param hdl libusb opened handle
+ * @param config0 configuration 0 from get config _descriptor
+ * @return a string with ASIC name, or NULL if not recognized
+ */
+static char *
+check_gt6801 (libusb_device_handle * handle,
+	       struct libusb_device_descriptor desc,
+	       struct libusb_config_descriptor *config0)
+{
+  unsigned char req[64];
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for GT-6801 ...\n");
+
+  /* Check device descriptor */
+  if (desc.bDeviceClass != LIBUSB_CLASS_VENDOR_SPEC)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bDeviceClass = %d)\n",
+		desc.bDeviceClass);
+      return 0;
+    }
+  if (desc.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bcdUSB = 0x%x)\n", desc.bcdUSB);
+      return 0;
+    }
+  if (desc.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bDeviceSubClass = 0x%x)\n",
+		desc.bDeviceSubClass);
+      return 0;
+    }
+  if (desc.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bDeviceProtocol = 0x%x)\n",
+		desc.bDeviceProtocol);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (config0->interface[0].altsetting[0].bNumEndpoints != 1)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6801 (bNumEndpoints = %d)\n",
+		config0->interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress != 0x81)
+      || (config0->interface[0].altsetting[0].endpoint[0].bmAttributes != 0x02)
+      || (config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize != 0x40)
+      || (config0->interface[0].altsetting[0].endpoint[0].bInterval != 0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6801 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+
+  /* Now we send a control message */
+
+  memset (req, 0, 64);
+  req[0] = 0x2e;		/* get identification information */
+  req[1] = 0x01;
+
+  result = libusb_control_transfer (handle, 0x40, 0x01, 0x2010, 0x3f40, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send write control message (%s)\n",
+		strerror (errno));
+      return NULL;
+    }
+  result = libusb_control_transfer (handle, 0xc0, 0x01, 0x2011, 0x3f00, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send read control message (%s)\n",
+		strerror (errno));
+      return NULL;
+    }
+  if (req[0] != 0 || (req[1] != 0x2e && req[1] != 0))
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from control message (%0x/%0x)\n",
+		req[0], req[1]);
+      return NULL;
+    }
+  return "GT-6801";
+}
+
+/** @brief check for gt6816 chip
+ *
+ * @param dev libusb device
+ * @param hdl libusb opened handle
+ * @param config0 configuration 0 from get config _descriptor
+ * @return a string with ASIC name, or NULL if not recognized
+ */
+static char *
+check_gt6816 (libusb_device_handle * handle,
+	       struct libusb_device_descriptor desc,
+	       struct libusb_config_descriptor *config0)
+{
+  unsigned char req[64];
+  int result,i;
+
+  if (verbose > 2)
+    printf ("    checking for GT-6816 ...\n");
+
+  /* Check device descriptor */
+  if ((desc.bDeviceClass != LIBUSB_CLASS_PER_INTERFACE)
+      || (config0->interface[0].altsetting[0].bInterfaceClass != LIBUSB_CLASS_VENDOR_SPEC))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6816 (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   desc.bDeviceClass,
+	   config0->interface[0].altsetting[0].bInterfaceClass);
+      return 0;
+    }
+  if (desc.bcdUSB != 0x110)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bcdUSB = 0x%x)\n", desc.bcdUSB);
+      return 0;
+    }
+  if (desc.bDeviceSubClass != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bDeviceSubClass = 0x%x)\n",
+		desc.bDeviceSubClass);
+      return 0;
+    }
+  if (desc.bDeviceProtocol != 0x00)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bDeviceProtocol = 0x%x)\n",
+		desc.bDeviceProtocol);
+      return 0;
+    }
+
+  if (config0->bNumInterfaces != 0x01)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bNumInterfaces = 0x%x)\n",
+		config0->bNumInterfaces);
+      return 0;
+    }
+
+  /* Check endpoints */
+  if (config0->interface[0].altsetting[0].bNumEndpoints != 2)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GT-6816 (bNumEndpoints = %d)\n",
+		config0->interface[0].altsetting[0].bNumEndpoints);
+      return 0;
+    }
+  if ((config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress != 0x81)
+      || (config0->interface[0].altsetting[0].endpoint[0].bmAttributes != 0x02)
+      || (config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize != 0x40)
+      || (config0->interface[0].altsetting[0].endpoint[0].bInterval != 0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6816 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[0].bInterval);
+      return 0;
+    }
+  if ((config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress != 0x02)
+      || (config0->interface[0].altsetting[0].endpoint[1].bmAttributes != 0x02)
+      || (config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize != 0x40)
+      || (config0->interface[0].altsetting[0].endpoint[1].bInterval != 0x00))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GT-6816 (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[1].bInterval);
+      return 0;
+    }
+
+  /* Now we send a control message */
+
+  memset (req, 0, 64);
+  for (i = 0; i < 8; i++)
+    {
+      req[8 * i + 0] = 0x73;	/* check firmware */
+      req[8 * i + 1] = 0x01;
+    }
+
+  result = libusb_control_transfer (handle, 0x40, 0x04, 0x2012, 0x3f40, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      if (verbose > 2)
+	printf ("    Couldn't send write control message (%s)\n",
+		strerror (errno));
+      return NULL;
+    }
+  result = libusb_control_transfer (handle, 0xc0, 0x01, 0x2013, 0x3f00, req, 64, TIMEOUT);
+  if (result <= 0)
+    {
+      /* Before firmware upload, 64 bytes are returned. Some libusb
+	 implementations/operating systems can't seem to cope with short
+	 packets. */
+      result = libusb_control_transfer (handle, 0xc0, 0x01, 0x2013, 0x3f00, req, 8, TIMEOUT);
+      if (result <= 0)
+        {
+          if (verbose > 2)
+	    printf ("    Couldn't send read control message (%s)\n",
+		    strerror (errno));
+          return NULL;
+        }
+    }
+  if (req[0] != 0)
+    {
+      if (verbose > 2)
+	printf ("    Unexpected result from control message (%0x/%0x)\n",
+		req[0], req[1]);
+      return NULL;
+    }
+  return "GT-6816";
+}
+
+/** @brief check for known genesys chip
+ *
+ * Try to check if the scanner use a known genesys ASIC.
+ * The various incarnations could be distinguished by the 
+ * bcdDevice entry:
+ *    0x701 --> GL124
+ *    0x700 --> ?
+ *    0x605 --> GL845
+ *    0x603 --> GL847
+ *    0x601 --> GL846 
+ *    0x500 --> GL843 
+ *    0x300 --> GL842 (perhaps only >= 0x303 ?)
+ *    0x200 --> GL841
+ *
+ * @param dev libusb device
+ * @param hdl libusb opened handle
+ * @param config0 configuration 0 from get config _descriptor
+ * @return a string with ASIC name, or NULL if not recognized
+ */
+static char *
+check_genesys (libusb_device_handle * handle,
+	       struct libusb_device_descriptor desc,
+	       struct libusb_config_descriptor *config0)
+{
+  unsigned char val;
+  int result;
+
+  if (verbose > 2)
+    printf ("    checking for GLxxx ...\n");
+
+  /* Check GL646 device descriptor */
+  if ((desc.bDeviceClass == LIBUSB_CLASS_PER_INTERFACE)
+      && (config0->interface[0].altsetting[0].bInterfaceClass == 0x10))
+    {
+      return check_gl646 (handle, desc, config0);
+    }
+  if (verbose > 2)
+    {
+      printf
+	("    this is not a GL646 (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	 desc.bDeviceClass,
+	 config0->interface[0].altsetting[0].bInterfaceClass);
+    }
+
+  /* Check device desc */
+  if ((desc.bDeviceClass != LIBUSB_CLASS_VENDOR_SPEC)
+      || (config0->interface[0].altsetting[0].bInterfaceClass !=
+	  LIBUSB_CLASS_VENDOR_SPEC))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GLxxx (bDeviceClass = %d, bInterfaceClass = %d)\n",
+	   desc.bDeviceClass,
+	   config0->interface[0].altsetting[0].bInterfaceClass);
+      return NULL;
+    }
+
+  if (desc.bDeviceSubClass != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GLxxx (bDeviceSubClass = 0x%x)\n",
+		desc.bDeviceSubClass);
+      return NULL;
+    }
+  if (desc.bDeviceProtocol != 0xff)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GLxxx (bDeviceProtocol = 0x%x)\n",
+		desc.bDeviceProtocol);
+      return NULL;
+    }
+
+  /* Check endpoints */
+  if (config0->interface[0].altsetting[0].bNumEndpoints != 3)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GLxxx (bNumEndpoints = %d)\n",
+		config0->interface[0].altsetting[0].bNumEndpoints);
+      return NULL;
+    }
+
+  if ((config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress !=
+       0x81)
+      || (config0->interface[0].altsetting[0].endpoint[0].bmAttributes !=
+	  0x02)
+      ||
+      ((config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize !=
+	0x40)
+       && (config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize !=
+	   0x200))
+      || (config0->interface[0].altsetting[0].endpoint[0].bInterval != 0x0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GLxxx (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[0].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[0].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[0].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[0].bInterval);
+      return NULL;
+    }
+
+  if ((config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress !=
+       0x02)
+      || (config0->interface[0].altsetting[0].endpoint[1].bmAttributes !=
+	  0x02)
+      ||
+      ((config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize !=
+	0x40)
+       && (config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize !=
+	   0x200))
+      || (config0->interface[0].altsetting[0].endpoint[1].bInterval != 0))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GLxxx (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[1].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[1].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[1].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[1].bInterval);
+      return NULL;
+    }
+
+  if ((config0->interface[0].altsetting[0].endpoint[2].bEndpointAddress !=
+       0x83)
+      || (config0->interface[0].altsetting[0].endpoint[2].bmAttributes !=
+	  0x03)
+      || (config0->interface[0].altsetting[0].endpoint[2].wMaxPacketSize !=
+	  0x1)
+      || ((config0->interface[0].altsetting[0].endpoint[2].bInterval != 8)
+	  && (config0->interface[0].altsetting[0].endpoint[2].bInterval !=
+	      16)))
+    {
+      if (verbose > 2)
+	printf
+	  ("    this is not a GLxxx (bEndpointAddress = 0x%x, bmAttributes = 0x%x, "
+	   "wMaxPacketSize = 0x%x, bInterval = 0x%x)\n",
+	   config0->interface[0].altsetting[0].endpoint[2].bEndpointAddress,
+	   config0->interface[0].altsetting[0].endpoint[2].bmAttributes,
+	   config0->interface[0].altsetting[0].endpoint[2].wMaxPacketSize,
+	   config0->interface[0].altsetting[0].endpoint[2].bInterval);
+      return NULL;
+    }
+
+  /* write then read a register using common read/write control message */
+  result = genesys_write_reg (handle, 0x38, 0x15);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GLxxx (writing register failed)\n");
+      return NULL;
+    }
+
+  result = genesys_read_reg (handle, 0x38, &val);
+  if (!result)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GLxxx (reading register failed)\n");
+      return NULL;
+    }
+
+  if (val != 0x15)
+    {
+      if (verbose > 2)
+	printf ("    this is not a GLxxx (reg 0x38 != 0x15)\n");
+      return NULL;
+    }
+
+  /* decide revision number based on bcdUsb heuristics */
+  if (desc.bcdDevice == 0x702)
+    return "GL128";
+  if (desc.bcdDevice == 0x701)
+    return "GL124";
+  if (desc.bcdDevice >= 0x700)
+    return "GL848+";
+  if (desc.bcdDevice >= 0x605)
+    return "GL845";
+  if (desc.bcdDevice >= 0x603)
+    return "GL847";
+  if (desc.bcdDevice >= 0x600)
+    return "GL846";
+  if (desc.bcdDevice >= 0x500)
+    return "GL843";
+  if (desc.bcdDevice >= 0x300)
+    return "GL842";
+  if (desc.bcdDevice > 0x101)
+    return "GL841";
+  return "GL646_HP";
+}
+
+char *
+check_usb_chip (int verbosity,
+		struct libusb_device_descriptor desc,
+		libusb_device_handle * hdl,
+		struct libusb_config_descriptor *config0)
+{
+  char *chip_name = NULL;
+  int ret;
+
+  verbose = verbosity;
+
+  if (verbose > 2)
+    printf ("\n<trying to find out which USB chip is used>\n");
+
+  /* set config if needed */
+  if (desc.bNumConfigurations > 1)
+    {
+      ret = libusb_set_configuration (hdl, config0->bConfigurationValue);
+      if (ret < 0)
+	{
+	  if (verbose > 2)
+	    printf ("couldnt set device to configuration %d\n",
+		    config0->bConfigurationValue);
+	  return NULL;
+	}
+    }
+
+  /* claim the interface (only interface 0 is currently handled */
+  ret = libusb_claim_interface (hdl, 0);
+  if (ret < 0)
+    {
+      if (verbose > 2)
+	printf ("could not claim USB device interface\n");
+      return NULL;
+    }
+
+  /* now USB is opened and set up, actual chip detection */
+
+  if (!chip_name)
+  	chip_name = check_gt6801 (hdl, desc, config0);
+
+  if (!chip_name)
+  	chip_name = check_gt6816 (hdl, desc, config0);
+
+  if (!chip_name)
+    chip_name = check_genesys (hdl, desc, config0);
+
+  if (verbose > 2)
+    {
+      if (chip_name)
+	printf ("<This USB chip looks like a %s (result from %s)>\n\n",
+		chip_name, PACKAGE_STRING);
+      else
+	printf
+	  ("<Couldn't determine the type of the USB chip (result from %s)>\n\n",
+	   PACKAGE_STRING);
+    }
+
+  /* close USB device */
+  libusb_release_interface (hdl, 0);
+  return chip_name;
+}
+#endif /* HAVE_LIBUSB_1_0 */
diff --git a/tools/gamma4scanimage.c b/tools/gamma4scanimage.c
new file mode 100644
index 0000000..69d83c7
--- /dev/null
+++ b/tools/gamma4scanimage.c
@@ -0,0 +1,140 @@
+/* --------------------------------------------------------------------------------------------------------- */
+/* sane - Scanner Access Now Easy.
+
+   gamma4scanimage
+
+   (C) 2002 Oliver Rauch
+
+   This file is part of the SANE package.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+
+*/
+/* --------------------------------------------------------------------------------------------------------- */
+
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+ double gamma  = 1.0;
+ int maxin     = 16383; /* 14 bit gamma input */
+ int maxout    = 255; /* 8 bit gamma output */
+ int shadow    = 0;
+ int highlight = maxin;
+ int in, out;
+ float f;
+
+  if ( (argc==1) || (argc>6) )
+  {
+    printf("Usage: %s gamma [shadow [highlight [maxin [maxout]]]]\n", argv[0]);
+    exit(-1);
+  }
+
+  if (argc>1)
+  {
+    gamma     = atof(argv[1]);
+  }
+
+  if (argc>2)
+  {
+    shadow    = atoi(argv[2]);
+  }
+
+  if (argc>3)
+  {
+    highlight = atoi(argv[3]);
+  }
+
+  if (argc>4)
+  {
+    maxin     = atoi(argv[4]);
+  }
+
+  if (argc>5)
+  {
+    maxout    = atoi(argv[5]);
+  }
+
+  if (shadow < 0)
+  {
+    printf("%s error: shadow=%d < 0\n", argv[0], shadow);
+    exit(-1);
+  }
+
+  if (highlight < 0)
+  {
+    printf("%s error: highlight=%d < 0\n", argv[0], highlight);
+    exit(-1);
+  }
+
+  if (maxin < 0)
+  {
+    printf("%s error: maxin=%d < 0\n", argv[0], maxin);
+    exit(-1);
+  }
+
+  if (maxout < 0)
+  {
+    printf("%s error: maxout=%d < 0\n", argv[0], maxout);
+    exit(-1);
+  }
+
+  if (shadow >= highlight)
+  {
+    printf("%s error: shadow=%d >= highlight=%d\n", argv[0], shadow, highlight);
+    exit(-1);
+  }
+
+  if (highlight > maxin)
+  {
+    printf("%s error: highlight=%d > maxin=%d\n", argv[0], highlight, maxin);
+    exit(-1);
+  }
+
+  if ((gamma < 0.1) || (gamma > 5))
+  {
+    printf("%s error: gamma=%f out of range [0.1;5]\n", argv[0], gamma);
+    exit(-1);
+  }
+
+  f = (highlight - shadow) / 255.0 + shadow;
+
+  printf("[%d]%d-", 0, 0);
+
+  if (shadow > 0)
+  {
+    printf("[%d]%d-", shadow, 0);
+  }
+
+  while (f < highlight)
+  {
+    in = (int) f;
+    out = maxout * pow((double) (in - shadow)/(highlight-shadow), (1.0/gamma));
+    printf("[%d]%d-", in, out);
+    f *= 1.5;
+  }
+
+  if (f > highlight)
+  {
+    printf("[%d]%d-", highlight, maxout);
+  }
+
+  printf("[%d]%d", maxin, maxout);
+
+ return 0;
+}
diff --git a/tools/hotplug-ng/README b/tools/hotplug-ng/README
new file mode 100644
index 0000000..1a17a19
--- /dev/null
+++ b/tools/hotplug-ng/README
@@ -0,0 +1,46 @@
+hotplug/hotplug-ng hook for sane-backends
+-----------------------------------------
+
+The libsane.hotplug script is intended to replace the existing hotplug scripts,
+as those won't be usable with the new hotplug-ng. The libsane.hotplug script
+works with both hotplug and hotplug-ng.  For current Linux kernels, "udev" is
+state of the art, see the "udev" directory instead.
+
+This script is provided in the hope that it will be useful, simpler, faster and
+more extensible than the current usermap approach.
+
+
+INSTALLATION
+------------
+
+Install libsane.hotplug in /etc/hotplug/usb, and make it executable.
+
+Create the directory /etc/sane.d/hotplug and copy libsane.db there.
+
+
+FILE FORMAT
+-----------
+
+The libsane.db contains 5 tab-separated fields:
+
+0xVVVV<tab>0xPPPP<tab>root:scanner<tab>0660<tab>optional_script
+
+Fields:
+ - vendor ID
+ - product ID
+ - ownership (user:group)
+ - permissions
+ - path of an optional script to run (it can be omitted)
+
+
+USAGE
+-----
+
+When run by hotplug/hotplug-ng, the libsane.hotplug script will grep for
+^0xVVVV[[:space:]]0xPPPP in /etc/sane.d/hotplug/*.db. If a match is found,
+the settings are applied to the device.
+
+The optional script is then run; this script can access the environment
+variables set by hotplug/hotplug-ng (see the documentation). The libsane.hotplug
+script will also set and export the DEVVID and DEVPID variables, containing the
+vendor and device ID of the scanner (of the form VVVV and PPPP).
diff --git a/tools/hotplug-ng/libsane.hotplug b/tools/hotplug-ng/libsane.hotplug
new file mode 100755
index 0000000..dec38a5
--- /dev/null
+++ b/tools/hotplug-ng/libsane.hotplug
@@ -0,0 +1,29 @@
+#!/bin/sh
+#
+# This file is part of the SANE distribution.
+# Hotplug USB hook for SANE
+
+if [ "$ACTION" != "add" ]; then
+    exit 0
+fi
+
+DEVVID=$(printf %4s $(echo $PRODUCT | cut -d'/' -f1) | tr ' ' 0)
+DEVPID=$(printf %4s $(echo $PRODUCT | cut -d'/' -f2) | tr ' ' 0)
+
+DEVCONF=$(grep -i "^0x$DEVVID[[:space:]]\+0x$DEVPID" /etc/sane.d/hotplug/*.db 2> /dev/null)
+
+if [ $? != 0 ]; then
+    exit 0
+fi
+
+set $DEVCONF
+
+chown $3 $DEVICE && chmod $4 $DEVICE
+
+if [ ! -z $5 -a -x $5 ]; then
+    export DEVVID
+    export DEVPID
+    exec $5
+fi
+
+exit 0
diff --git a/tools/hotplug/README b/tools/hotplug/README
new file mode 100644
index 0000000..1170639
--- /dev/null
+++ b/tools/hotplug/README
@@ -0,0 +1,35 @@
+README for the USB hotplug scripts for sane-backends :
+------------------------------------------------------
+
+If you intend to use a USB scanner with libusb and older versions of Linux, you
+should install the hotplug package, and then take the following steps. For
+current Linux kernels, "udev" is state of the art, see the "udev" directory
+instead.
+
+  o Copy the libsane.usermap and libusbscanner files from this directory to
+    /etc/hotplug/usb/
+  o If you use Linux 2.6.3 or older, add scanner to /etc/hotplug/blacklist so
+    that the scanner.o kernel driver won't be loaded by hotplug. With later
+    kernel versions there is no scanner module and therefore it's not necessary
+    to use the blacklist.
+  o Check if /etc/hotplug/usb/libsane.usermap already knows about your scanner.
+    If your scanner is not in this list,add a line similar to the other ones
+    using the vendor ID and the product ID of your scanner. Please contact the
+    sane-devel mailing list in this case so the ids of your scanner can be added.
+  o Make sure that the "scanner" group exists on your system and that every user
+    who should be allowed to acces the scanner is a member of that group.
+    Alternatively, you can enable access for every user of your system in
+    libusbscanner.
+
+The vendor ID and product ID of your scanner can be obtained by running
+sane-find-scanner (you might need to run it as root).
+
+Please note that the scanner.o (or scanner.ko in Linux 2.6) kernel module is
+now deprecated and marked as obsolete in Linux 2.6. It is recommended to switch
+to libusb.
+
+If the hotplug support doesn't work for you once you have taken the steps
+described above, check that your kernel has been built with hotplug support.
+Otherwise, you'll need to rebuild your kernel.
+
+ -- Julien BLACHE <jb@jblache.org>, Sat, 28 Feb 2004 10:01:02 +0000
diff --git a/tools/hotplug/libusbscanner b/tools/hotplug/libusbscanner
new file mode 100755
index 0000000..bf613a5
--- /dev/null
+++ b/tools/hotplug/libusbscanner
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# This file is part of sane-backends.
+#
+# This script changes the permissions and ownership of a USB device under
+# /proc/bus/usb to grant access to this device to users in the scanner group.
+#
+# Ownership is set to root:scanner, permissions are set to 0660.
+#
+# Arguments :
+# -----------
+# ACTION=[add|remove]
+# DEVICE=/proc/bus/usb/BBB/DDD
+# TYPE=usb
+
+# latest hotplug doesn't set DEVICE on 2.6.x kernels
+if [ -z "$DEVICE" ] ; then
+  IF=`echo $DEVPATH | sed 's/\(bus\/usb\/devices\/\)\(.*\)-\(.*\)/\2/'`
+  DEV=$(cat /sys/${DEVPATH}/devnum)
+  DEVICE=`printf '/proc/bus/usb/%.03d/%.03d' $IF $DEV`
+fi
+
+if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
+  chown root:scanner "$DEVICE"
+  chmod 0660 "$DEVICE"
+fi
+
+
+# That's an insecure but simple alternative
+# Everyone has access to the scanner
+
+# if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
+#  chmod 0666 "$DEVICE"
+# fi
+
diff --git a/tools/libtool-get-dll-ext b/tools/libtool-get-dll-ext
new file mode 100755
index 0000000..722e676
--- /dev/null
+++ b/tools/libtool-get-dll-ext
@@ -0,0 +1,19 @@
+#!/bin/sh
+#
+# Author: Petter Reinholdtsen <pere@td.org.uit.no>
+# Date:   2000-03-18
+#
+# Given a libtool lib*.la, return the dll extention used (ie. so, sl,
+# dll, etc)
+if test "x$1" = x; then
+  echo "usage: $0 <libfile.la>"
+  exit 1
+fi
+
+lafile=$1
+
+libnames=`grep library_names= $lafile`
+last=`echo $libnames | cut -d\' -f2|tr " " "\n"|tail -n 1`
+dllend=`echo $last | cut -d. -f2`
+
+echo $dllend
diff --git a/tools/mustek600iin-off.c b/tools/mustek600iin-off.c
new file mode 100644
index 0000000..d2c6754
--- /dev/null
+++ b/tools/mustek600iin-off.c
@@ -0,0 +1,199 @@
+/*
+   off.c - Switch the Mustek 600 II N off
+
+   This utility accesses the I/O-ports directly and must therefore be
+   run with euid root, or must at least have access to /dev/port.
+   Compile with:
+   gcc -DHAVE_SYS_IO_H -O2 -Wall -s -o off off.c
+   The -O2 optimization is needed to allow inline functions !
+   Copyright (C) 1997-1999 Andreas Czechanowski, DL4SDC
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   andreas.czechanowski@ins.uni-stuttgart.de
+ */
+
+#include "../include/sane/config.h"
+#include "../include/sane/sanei.h"
+
+#define MUSTEK_CONF	STRINGIFY(PATH_SANE_CONFIG_DIR) "/mustek.conf"
+#define PORT_DEV	"/dev/port"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_SYS_IO_H
+# include <sys/io.h>	/* use where available (glibc 2.x, for example) */
+#elif HAVE_ASM_IO_H
+# include <asm/io.h>	/* ugly, but backwards compatible */
+#elif defined(__i386__)  && defined (__GNUC__)
+
+static __inline__ void
+outb (u_char value, u_long port)
+{
+  __asm__ __volatile__ ("outb %0,%1"::"a" (value), "d" ((u_short) port));
+}
+
+static __inline__ u_char
+inb (u_long port)
+{
+  u_char value;
+
+  __asm__ __volatile__ ("inb %1,%0":"=a" (value):"d" ((u_short) port));
+  return value;
+}
+#endif
+
+char *Mustek_Conf = MUSTEK_CONF;
+
+int allowed_ports[] =
+{
+  0x26b, 0x26c,
+  0x2ab, 0x2ac,
+  0x2eb, 0x2ec,
+  0x22b, 0x22c,
+  0x32b, 0x32c,
+  0x36b, 0x36c,
+  0x3ab, 0x3ac,
+  0x3eb, 0x3ec,
+  -1
+};
+
+void
+usage (void)
+{
+  fprintf (stderr, "Usage: off [port]\n"
+	   "  switches the Mustek 600 II N off that is connected to\n"
+	   "  base address <port>. If address is not given, reads it\n"
+	   "  from SANE config file <%s>.\n", Mustek_Conf);
+}
+
+void
+noaccess (int portaddr)
+{
+  fprintf (stderr, "Access to port 0x%03x not allowed !\n", portaddr);
+}
+
+int
+check_port (int portaddr)
+{
+  int i, j;
+
+  for (i = 0; (j = allowed_ports[i]) != -1; i++)
+    {
+      if (j == portaddr)
+	return j;
+    }
+  return -1;
+}
+
+int
+str2int (char *ch)
+{
+  int i;
+
+  i = strtol (ch, NULL, 0);
+  return i;
+}
+
+int
+main (int argc, char **argv)
+{
+  char *cp;
+  int portaddr = 0;
+  FILE *fp;
+  int pfd;
+
+  /* get config file name from environment if variable is set */
+  if (NULL != (cp = getenv ("MUSTEK_CONF")))
+    {
+      Mustek_Conf = cp;
+    }
+
+  /* if port is explicitly given, try this one */
+  if (argc > 1)
+    {
+      portaddr = str2int (argv[1]);
+    }
+  /* else try to look it up from SANE's mustek.conf file */
+  else if (NULL != (fp = fopen (MUSTEK_CONF, "r")))
+    {
+      char line[256];
+
+      while (NULL != fgets (line, 255, fp))
+	{
+	  if ('#' == *line)
+	    continue;
+	  if (0 != (portaddr = str2int (line)))
+	    break;
+	}
+      fclose (fp);
+    }
+  else
+    {
+      fprintf (stderr, "Mustek config file <%s> not found\n", Mustek_Conf);
+      usage ();
+      exit (1);
+    }
+
+  if (check_port (portaddr) < 0 || check_port (portaddr + 1) < 0)
+    {
+      fprintf (stderr, "invalid port address specified !\n");
+      usage ();
+      exit (1);
+    }
+
+  /* we need the control port, not the data port, so... */
+  portaddr++;
+
+  fprintf (stderr, "using control port address 0x%03x\n", portaddr);
+  /* try to get I/O permission from the kernel */
+  if (ioperm (portaddr, 1, 1) == 0)
+    {
+      outb (0x00, portaddr);
+    }
+  /* else try to open /dev/port to access the I/O port */
+  else if ((pfd = open (PORT_DEV, O_RDWR, 0666)) >= 0)
+    {
+      char offcmd[] =
+      {0x00};
+
+      if ((lseek (pfd, portaddr, SEEK_SET) != portaddr)
+	  || (write (pfd, offcmd, 1) != 1))
+	{
+	  perror ("error handling /dev/port");
+	  exit (1);
+	}
+      close (pfd);
+    }
+  else
+    {
+      fprintf (stderr, "Could not get port access:\n"
+	       "Neither via ioperm(), nor via /dev/port.\n"
+	       "This program must be run setuid root,\n"
+	       "or the user must have access to /dev/port.\n");
+      exit (1);
+    }
+  printf ("successfully sent OFF-command to control port at 0x%03x.\n",
+	  portaddr);
+
+  exit (0);
+}
diff --git a/tools/openbsd/attach b/tools/openbsd/attach
new file mode 100755
index 0000000..b6c98c8
--- /dev/null
+++ b/tools/openbsd/attach
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+DEVCLASS=$1
+DEVNAME=$2
+
+case $DEVCLASS in
+0)
+	# generic devices
+	case "$DEVNAME" in
+	ugen*)
+		BUSNAME=`usbdevs -v -d | egrep "Controller|$DEVNAME\$" | grep -B 1 ugen0$ | head -n 1 | sed -e 's,Controller ,,' -e 's,:$,,' `
+		echo $BUSNAME >  /var/run/${DEVNAME}.bus
+		# probably our scanner
+		chgrp usb /dev/"$DEVNAME".*
+		chgrp usb /dev/"$BUSNAME"
+		;;
+	esac
+
+        ;;
+esac
diff --git a/tools/openbsd/detach b/tools/openbsd/detach
new file mode 100755
index 0000000..a5c209c
--- /dev/null
+++ b/tools/openbsd/detach
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+DEVCLASS=$1
+DEVNAME=$2
+
+case $DEVCLASS in
+0)
+	# generic devices
+	case "$DEVNAME" in
+	ugen*)
+		BUSNAME=`cat /var/run/${DEVNAME}.bus`
+		rm -f /var/run/${DEVNAME}.bus
+		# probably our scanner
+		chgrp wheel /dev/"$DEVNAME".*
+		if [ x$BUSNAME != x ] ; then
+			chgrp wheel /dev/"$BUSNAME"
+		fi
+		;;
+	esac
+
+        ;;
+esac
diff --git a/tools/sane-backends.pc.in b/tools/sane-backends.pc.in
new file mode 100644
index 0000000..b4d9731
--- /dev/null
+++ b/tools/sane-backends.pc.in
@@ -0,0 +1,14 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+ldflags=@LDFLAGS@ @GPHOTO2_LDFLAGS@
+libs=@LIBS@ @DL_LIBS@ @LIBV4L_LIBS@ @MATH_LIB@ @TIFF_LIBS@ @JPEG_LIBS@ @GPHOTO2_LIBS@ @SOCKET_LIBS@ @AVAHI_LIBS@ @USB_LIBS@ @SCSI_LIBS@ @RESMGR_LIBS@
+
+Name: SANE Backends
+Description: Backends for SANE, the universal scanner interface
+Version: @VERSION@
+Requires:
+Libs: -L${libdir} -lsane
+Libs.private: ${ldflags} ${libs}
+Cflags: -I${includedir}
diff --git a/tools/sane-config.in b/tools/sane-config.in
new file mode 100644
index 0000000..8e4b52a
--- /dev/null
+++ b/tools/sane-config.in
@@ -0,0 +1,91 @@
+#!/bin/sh
+#
+# This script is part of SANE, <URL:http://www.sane-project.org/>
+#
+# Send bugreports and other requests to sane-devel@lists.alioth.debian.org
+
+PACKAGE="@PACKAGE@"
+scriptname="sane-config"
+
+prefix="@prefix@"
+exec_prefix="@exec_prefix@"
+
+# using our installed *.pc only - neither default nor user paths
+export PKG_CONFIG_LIBDIR="@libdir@/pkgconfig"
+export PKG_CONFIG_PATH=""
+
+pkgconfig_package=sane-backends
+
+usage ()
+{
+  echo "Usage: "  1>&2
+  echo "$scriptname --version         - show installed script and SANE version"  1>&2
+  echo "$scriptname --ldflags         - linker flags required to link with SANE"  1>&2
+  echo "$scriptname --libs            - libraries required to link with SANE"  1>&2
+  echo "$scriptname --cflags          - compiler flags required to find SANE headers"  1>&2
+  echo "$scriptname --help            - show usage info (this message)          "  1>&2
+  echo "$scriptname --help SUBCOMMAND - show help for SUBCOMMAND                "  1>&2
+  echo "$scriptname --prefix          - prefix used during SANE compile"  1>&2
+  echo "$scriptname --exec-prefix     - exec-prefix used during SANE compile"  1>&2
+}
+
+if test $# -eq 0; then
+      usage
+      exit 1
+fi
+
+if test $# -gt 0; then
+  case $1 in
+    --version)
+      echo @NUMBER_VERSION@
+      ;;
+    --help)
+      if test $# -eq 1; then
+        usage
+      elif test $# -eq 2; then
+        case $2 in
+          --cflags)
+            echo "Usage: $0 --cflags"
+            echo "  Print C compiler flags for compiling code that uses SANE."
+            echo "  This includes any \`-I' flags needed to find Sane's header files."
+            ;;
+          --ldflags)
+            echo "Usage: $0 --ldflags"
+            echo "  Print linker flags for building the \`$PACKAGE' executable."
+            echo "  Print the linker command-line flags necessary to link against"
+            echo "  the SANE library.  The libraries are listed with --libs."
+            ;;
+          --libs)
+            echo "Usage: $0 --libs"
+            echo "  Print linker flags for building the \`$PACKAGE' executable."
+            echo "  Print the linker command-line flags necessary to link against"
+            echo "  the SANE library, and any other libraries it requires."
+            ;;
+        esac
+      else
+        usage
+      fi
+      exit 1
+      ;;
+    --ldflags)
+      pkg-config --libs-only-L "$pkgconfig_package"
+      ;;
+    --libs)
+      pkg-config --libs "$pkgconfig_package"
+      ;;
+    --cflags)
+      pkg-config --cflags "$pkgconfig_package"
+      ;;
+    --prefix)
+      echo "${prefix}"
+      ;;
+    --exec-prefix)
+      echo "${exec_prefix}"
+      ;;
+    *)
+      usage
+      exit 1
+      ;;
+  esac
+fi
+
diff --git a/tools/sane-desc.c b/tools/sane-desc.c
new file mode 100644
index 0000000..3cc4407
--- /dev/null
+++ b/tools/sane-desc.c
@@ -0,0 +1,4056 @@
+/*
+   sane-desc.c -- generate list of supported SANE devices
+
+   Copyright (C) 2002-2006 Henning Meier-Geinitz <henning@meier-geinitz.de>
+   Copyright (C) 2004 Jose Gato <jgato@gsyc.escet.urjc.es> (XML output)
+   Copyright (C) 2006 Mattias Ellert <mattias.ellert@tsl.uu.se> (plist output)
+   Copyright (C) 2009 Dr. Ing. Dieter Jurzitza <dieter.jurzitza@t-online.de>
+   Copyright (C) 2013 Tom Gundersen <teg@jklm.no> (hwdb output)
+
+   This file is part of the SANE package.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+*/
+
+#include <../include/sane/config.h>
+
+#include "lgetopt.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <limits.h>
+#include <ctype.h>
+#include <time.h>
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei.h"
+#include "../include/sane/sanei_config.h"
+
+#define SANE_DESC_VERSION "3.5"
+
+#define MAN_PAGE_LINK "http://www.sane-project.org/man/%s.5.html"
+#define COLOR_MINIMAL      "\"#B00000\""
+#define COLOR_BASIC        "\"#FF9000\""
+#define COLOR_GOOD         "\"#90B000\""
+#define COLOR_COMPLETE     "\"#007000\""
+#define COLOR_UNTESTED     "\"#0000B0\""
+#define COLOR_UNSUPPORTED  "\"#F00000\""
+#define COLOR_NEW          "\"#F00000\""
+#define COLOR_UNKNOWN      "\"#000000\""
+
+#define DEVMODE  "0664"
+#define DEVOWNER "root"
+#define DEVGROUP "scanner"
+
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+#define DBG_ERR current_debug_level = 0; debug_call
+#define DBG_WARN current_debug_level = 1; debug_call
+#define DBG_INFO current_debug_level = 2; debug_call
+#define DBG_DBG current_debug_level = 3; debug_call
+
+typedef enum output_mode
+{
+  output_mode_ascii = 0,
+  output_mode_xml,
+  output_mode_html_backends,
+  output_mode_html_backends_split,
+  output_mode_html_mfgs,
+  output_mode_statistics,
+  output_mode_usermap,
+  output_mode_db,
+  output_mode_udev,
+  output_mode_udevacl,
+  output_mode_udevhwdb,
+  output_mode_hwdb,
+  output_mode_plist,
+  output_mode_hal,
+  output_mode_halnew
+}
+output_mode;
+
+typedef enum parameter_type
+{
+  param_none = 0,
+  param_string,
+  param_two_strings,
+  param_three_strings
+}
+parameter_type;
+
+typedef enum status_entry
+{
+  status_unknown,
+  status_unsupported,
+  status_untested,
+  status_minimal,
+  status_basic,
+  status_good,
+  status_complete
+}
+status_entry;
+
+typedef enum device_type
+{
+  type_unknown,
+  type_scanner,
+  type_stillcam,
+  type_vidcam,
+  type_meta,
+  type_api
+}
+device_type;
+
+typedef enum level
+{
+  level_backend,
+  level_mfg,
+  level_model,
+  level_desc
+}
+level;
+
+typedef struct url_entry
+{
+  struct url_entry *next;
+  char *name;
+}
+url_entry;
+
+typedef struct model_entry
+{
+  struct model_entry *next;
+  char *name;
+  char *interface;
+  struct url_entry *url;
+  char *comment;
+  enum status_entry status;
+  char *usb_vendor_id;
+  char *usb_product_id;
+  SANE_Bool ignore_usb_id;
+  char *scsi_vendor_id;
+  char *scsi_product_id;
+  SANE_Bool scsi_is_processor;
+}
+model_entry;
+
+typedef struct desc_entry
+{
+  struct desc_entry *next;
+  char *desc;
+  struct url_entry *url;
+  char *comment;
+}
+desc_entry;
+
+typedef struct mfg_entry
+{
+  struct mfg_entry *next;
+  char *name;
+  struct url_entry *url;
+  char *comment;
+  struct model_entry *model;
+}
+mfg_entry;
+
+typedef struct type_entry
+{
+  struct type_entry *next;
+  enum device_type type;
+  struct desc_entry *desc;
+  struct mfg_entry *mfg;
+}
+type_entry;
+
+typedef struct backend_entry
+{
+  struct backend_entry *next;
+  char *name;
+  char *version;
+  char *manpage;
+  struct url_entry *url;
+  char *comment;
+  struct type_entry *type;
+  SANE_Bool new;
+}
+backend_entry;
+
+typedef struct model_record_entry
+{
+  struct model_record_entry *next;
+  char *name;
+  char *interface;
+  struct url_entry *url;
+  char *comment;
+  enum status_entry status;
+  char *usb_vendor_id;
+  char *usb_product_id;
+  char *scsi_vendor_id;
+  char *scsi_product_id;
+  SANE_Bool scsi_is_processor;
+  struct backend_entry *be;
+}
+model_record_entry;
+
+typedef struct mfg_record_entry
+{
+  struct mfg_record_entry *next;
+  char *name;
+  char *comment;
+  struct url_entry *url;
+  struct model_record_entry *model_record;
+}
+mfg_record_entry;
+
+typedef int  statistics_type [status_complete + 1];
+
+
+typedef struct manufacturer_model_type
+{
+  struct manufacturer_model_type * next;
+  char *name;
+}
+manufacturer_model_type;
+
+typedef struct usbid_type
+{
+  struct usbid_type * next;
+  char *usb_vendor_id;
+  char *usb_product_id;
+  struct manufacturer_model_type *name;
+}
+usbid_type;
+
+typedef struct scsiid_type
+{
+  struct scsiid_type * next;
+  char *scsi_vendor_id;
+  char *scsi_product_id;
+  SANE_Bool is_processor;
+  struct manufacturer_model_type *name;
+}
+scsiid_type;
+
+static char *program_name;
+static int debug = 0;
+static int current_debug_level = 0;
+static char *search_dir_spec = 0;
+static backend_entry *first_backend = 0;
+static enum output_mode mode = output_mode_ascii;
+static char *title = 0;
+static char *intro = 0;
+static SANE_String desc_name = 0;
+static const char *status_name[] =
+  {"Unknown", "Unsupported", "Untested", "Minimal", "Basic",
+   "Good", "Complete"};
+static const char *device_type_name[] =
+  {"Unknown", "Scanners", "Still cameras", "Video Cameras", "Meta backends",
+   "APIs"};
+static const char *device_type_aname[] =
+  {"UKNOWN", "SCANNERS", "STILL", "VIDEO", "META",
+   "API"};
+static const char *status_color[] =
+  {COLOR_UNKNOWN, COLOR_UNSUPPORTED, COLOR_UNTESTED, COLOR_MINIMAL,
+   COLOR_BASIC, COLOR_GOOD, COLOR_COMPLETE};
+
+
+static void
+debug_call (const char *fmt, ...)
+{
+  va_list ap;
+  char *level_txt;
+
+  va_start (ap, fmt);
+  if (debug >= current_debug_level)
+    {
+      /* print to stderr */
+      switch (current_debug_level)
+	{
+	case 0:
+	  level_txt = "ERROR:";
+	  break;
+	case 1:
+	  level_txt = "Warning:";
+	  break;
+	case 2:
+	  level_txt = "Info:";
+	  break;
+	default:
+	  level_txt = "";
+	  break;
+	}
+      if (desc_name)
+	fprintf (stderr, "%s: %8s ", desc_name, level_txt);
+      else
+	fprintf (stderr, "[%s] %8s ", program_name, level_txt);
+      vfprintf (stderr, fmt, ap);
+    }
+  va_end (ap);
+}
+
+static void
+print_usage (char *program_name)
+{
+  printf ("Usage: %s [-s dir] [-m mode] [-d level] [-h] [-V]\n",
+	  program_name);
+  printf ("  -s|--search-dir dir    "
+	  "Specify the directory that contains .desc files \n"
+	  "                         "
+	  "(multiple directories can be concatenated by \":\")\n");
+  printf ("  -m|--mode mode         "
+	  "Output mode (ascii, html-backends-split, html-mfgs,\n"
+	  "                         xml, statistics, usermap, db, udev, udev+acl, udev+hwdb, hwdb, plist, hal, hal-new)\n");
+  printf ("  -t|--title \"title\"     The title used for HTML pages\n");
+  printf ("  -i|--intro \"intro\"     A short description of the "
+	  "contents of the page\n");
+  printf ("  -d|--debug-level level Specify debug level (0-3)\n");
+  printf ("  -h|--help              Print help message\n");
+  printf ("  -V|--version           Print version information\n");
+  printf ("Report bugs to <henning@meier-geinitz.de>\n");
+}
+
+static void
+print_version (void)
+{
+  printf ("sane-desc %s (%s)\n", SANE_DESC_VERSION, PACKAGE_STRING);
+  printf ("Copyright (C) 2002-2006 Henning Meier-Geinitz "
+	  "<henning@meier-geinitz.de>\n"
+	  "sane-desc comes with NO WARRANTY, to the extent permitted by "
+	  "law.\n"
+	  "You may redistribute copies of sane-desc under the terms of the "
+	  "GNU General\n"
+	  "Public License.\n"
+	  "For more information about these matters, see the file named "
+	  "COPYING.\n");
+}
+
+static SANE_Bool
+get_options (int argc, char **argv)
+{
+  int longindex;
+  int opt;
+  static struct option desc_options[] = {
+    {"search-dir", required_argument, NULL, 's'},
+    {"mode", required_argument, NULL, 'm'},
+    {"title", required_argument, NULL, 't'},
+    {"intro", required_argument, NULL, 'i'},
+    {"debug-level", required_argument, NULL, 'd'},
+    {"help", 0, NULL, 'h'},
+    {"version", 0, NULL, 'V'},
+    {0, 0, 0, 0}
+  };
+
+  while ((opt = getopt_long (argc, argv, "s:m:t:i:d:hV", desc_options,
+			     &longindex)) != -1)
+    {
+      switch (opt)
+	{
+	case 'h':
+	  print_usage (argv[0]);
+	  exit (0);
+	case 'V':
+	  print_version ();
+	  exit (0);
+	case 's':
+	  search_dir_spec = strdup (optarg);
+	  DBG_INFO ("setting search directory to `%s'\n", search_dir_spec);
+	  break;
+	case 'm':
+	  if (strcmp (optarg, "ascii") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_ascii;
+	    }
+	  else if (strcmp (optarg, "xml") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_xml;
+	    }
+	  else if (strcmp (optarg, "html-backends-split") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_html_backends_split;
+	    }
+	  else if (strcmp (optarg, "html-mfgs") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_html_mfgs;
+	    }
+	  else if (strcmp (optarg, "statistics") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_statistics;
+	    }
+	  else if (strcmp (optarg, "usermap") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_usermap;
+	    }
+	  else if (strcmp (optarg, "db") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_db;
+	    }
+	  else if (strcmp (optarg, "udev") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_udev;
+	    }
+	  else if (strcmp (optarg, "udev+acl") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_udevacl;
+	    }
+	  else if (strcmp (optarg, "udev+hwdb") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_udevhwdb;
+	    }
+	  else if (strcmp (optarg, "hwdb") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_hwdb;
+	    }
+	  else if (strcmp (optarg, "plist") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_plist;
+	    }
+	  else if (strcmp (optarg, "hal") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_hal;
+	    }
+	  else if (strcmp (optarg, "hal-new") == 0)
+	    {
+	      DBG_INFO ("Output mode: %s\n", optarg);
+	      mode = output_mode_halnew;
+	    }
+	  else
+	    {
+	      DBG_ERR ("Unknown output mode: %s\n", optarg);
+	      exit (1);
+	    }
+	  break;
+	case 't':
+	  title = optarg;
+	  DBG_INFO ("setting title to `%s'\n", optarg);
+	  break;
+	case 'i':
+	  intro = optarg;
+	  DBG_INFO ("setting intro to `%s'\n", optarg);
+	  break;
+	case 'd':
+	  debug = atoi (optarg);
+	  DBG_INFO ("setting debug level to %d\n", debug);
+	  break;
+	case '?':
+	  DBG_ERR ("unknown option (use -h for help)\n");
+	  return SANE_FALSE;
+	case ':':
+	  DBG_ERR ("missing parameter (use -h for help)\n");
+	  return SANE_FALSE;
+	default:
+	  DBG_ERR ("missing option (use -h for help)\n");
+	  return SANE_FALSE;
+	}
+    }
+  if (!search_dir_spec)
+    search_dir_spec = ".";
+  return SANE_TRUE;
+}
+
+static int
+char_compare (char char1, char char2)
+{
+  char1 = toupper (char1);
+  char2 = toupper (char2);
+
+  if (char1 < char2)
+    return -1;
+  else if (char1 > char2)
+    return 1;
+  else
+    return 0;
+}
+
+static int
+num_compare (char *num_string1, char *num_string2)
+{
+  int num1 = atoi (num_string1);
+  int num2 = atoi (num_string2);
+  if (num1 < num2)
+    return -1;
+  else if (num1 > num2)
+    return 1;
+  else
+    return 0;
+}
+
+/* Compare two strings, try to sort numbers correctly (600 < 1200) */
+static int
+string_compare (char *string1, char *string2)
+{
+  int count = 0;
+  int compare = 0;
+
+  if (!string1)
+    {
+      if (!string2)
+	return 0;
+      else
+	return 1;
+    }
+  else if (!string2)
+    return -1;
+
+  while (string1[count] && string2[count])
+    {
+      if (isdigit (string1[count]) && isdigit (string2[count]))
+	compare = num_compare (&string1[count], &string2[count]);
+      else
+	compare = char_compare (string1[count], string2[count]);
+      if (compare != 0)
+	return compare;
+      count++;
+    }
+  return char_compare (string1[count], string2[count]);
+}
+
+/* Add URLs to the end of the list if they are unique */
+static url_entry *
+update_url_list (url_entry * first_url, char *new_url)
+{
+  url_entry *url = first_url;
+  SANE_Bool found = SANE_FALSE;
+
+  while (url && url->name)
+    {
+      if (string_compare (url->name, new_url) == 0)
+	found = SANE_TRUE;
+      url = url->next;
+    }
+  if (found)
+    return first_url;
+
+  url = first_url;
+  if (url)
+    {
+      while (url->next)
+	url = url->next;
+      url->next = calloc (1, sizeof (url_entry));
+      url = url->next;
+    }
+  else
+    {
+      first_url = calloc (1, sizeof (url_entry));
+      url = first_url;
+    }
+  if (!url)
+    {
+      DBG_ERR ("update_url_list: couldn't calloc url_entry\n");
+      exit (1);
+    }
+  url->name = new_url;
+  return first_url;
+}
+
+/* Get the next token, ignoring escaped quotation marks */
+static const char *
+get_token (const char *str, char **string_const)
+{
+  const char *start;
+  size_t len;
+
+  str = sanei_config_skip_whitespace (str);
+
+  if (*str == '"')
+    {
+      start = ++str;
+      while (*str && (*str != '"' || *(str - 1) == '\\'))
+	++str;
+      len = str - start;
+      if (*str == '"')
+	++str;
+      else
+	start = 0;		/* final double quote is missing */
+    }
+  else
+    {
+      start = str;
+      while (*str && !isspace (*str))
+	++str;
+      len = str - start;
+    }
+  if (start)
+    *string_const = strndup (start, len);
+  else
+    *string_const = NULL;
+  return str;
+}
+
+/* Checks a line for a keyword token and determines keyword/string argument */
+static SANE_Status
+read_keyword (SANE_String line, SANE_String keyword_token,
+	      parameter_type p_type, void *argument)
+{
+  SANE_String_Const cp;
+  SANE_Char *word;
+
+  word = 0;
+
+  cp = get_token (line, &word);
+
+  if (!word)
+    {
+      DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+      return SANE_STATUS_INVAL;
+    }
+
+  if (strcmp (word, keyword_token) != 0)
+    {
+      free(word);
+      return SANE_STATUS_INVAL;
+    }
+
+  free (word);
+  word = 0;
+
+  switch (p_type)
+    {
+    case param_none:
+      return SANE_STATUS_GOOD;
+    case param_string:
+      {
+	char *pos;
+	cp = get_token (cp, &word);
+	if (!word)
+	  {
+	    DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+	    return SANE_STATUS_INVAL;
+	  }
+	/* remove escaped quotations */
+	while ((pos = strstr (word, "\\\"")) != 0)
+	  *pos = ' ';
+
+	DBG_DBG ("read_keyword: set entry `%s' to `%s'\n", keyword_token,
+		 word);
+	*(SANE_String *) argument = strdup (word);
+	break;
+      }
+    case param_two_strings:
+      {
+	char *pos;
+	char **strings = malloc (2 * sizeof (SANE_String));
+
+	cp = get_token (cp, &word);
+	if (!word)
+	  {
+	    free(strings);
+	    DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+	    return SANE_STATUS_INVAL;
+	  }
+	/* remove escaped quotations */
+	while ((pos = strstr (word, "\\\"")) != 0)
+	  *pos = ' ';
+	DBG_INFO ("read_keyword: set first entry of `%s' to `%s'\n", keyword_token,
+		 word);
+	strings[0] = strdup (word);
+	if (word)
+	  free (word);
+
+	cp = get_token (cp, &word);
+	if (!word)
+	  {
+	    free(strings);
+	    DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+	    return SANE_STATUS_INVAL;
+	  }
+	/* remove escaped quotations */
+	while ((pos = strstr (word, "\\\"")) != 0)
+	  *pos = ' ';
+	DBG_INFO ("read_keyword: set second entry of `%s' to `%s'\n", keyword_token,
+		 word);
+	strings[1] = strdup (word);
+	* (SANE_String **) argument = strings;
+	break;
+      }
+    case param_three_strings:
+      {
+	char *pos;
+	char **strings = malloc (3 * sizeof (SANE_String));
+
+	cp = get_token (cp, &word);
+	if (!word)
+	  {
+	    free(strings);
+	    DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+	    return SANE_STATUS_INVAL;
+	  }
+	/* remove escaped quotations */
+	while ((pos = strstr (word, "\\\"")) != 0)
+	  *pos = ' ';
+	DBG_INFO ("read_keyword: set first entry of `%s' to `%s'\n", keyword_token,
+		 word);
+	strings[0] = strdup (word);
+	if (word)
+	  free (word);
+
+	cp = get_token (cp, &word);
+	if (!word)
+	  {
+	    free(strings);
+	    DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+	    return SANE_STATUS_INVAL;
+	  }
+	/* remove escaped quotations */
+	while ((pos = strstr (word, "\\\"")) != 0)
+	  *pos = ' ';
+	DBG_INFO ("read_keyword: set second entry of `%s' to `%s'\n", keyword_token,
+		 word);
+	strings[1] = strdup (word);
+	if (word)
+	  free (word);
+
+	cp = get_token (cp, &word);
+	if (!word)
+	  {
+	    free(strings);
+	    DBG_ERR ("read_keyword: missing quotation mark: %s\n", line);
+	    return SANE_STATUS_INVAL;
+	  }
+	/* remove escaped quotations */
+	while ((pos = strstr (word, "\\\"")) != 0)
+	  *pos = ' ';
+	DBG_INFO ("read_keyword: set third entry of `%s' to `%s'\n", keyword_token,
+		 word);
+	strings[2] = strdup (word);
+	* (SANE_String **) argument = strings;
+	break;
+      }
+    default:
+      DBG_ERR ("read_keyword: unknown param_type %d\n", p_type);
+      return SANE_STATUS_INVAL;
+    }
+
+  if (word)
+    free (word);
+  word = 0;
+  return SANE_STATUS_GOOD;
+}
+
+/* Check for a all-lowercase 4-digit hex number (e.g. 0x1234) */
+static SANE_Bool
+check_hex (SANE_String string)
+{
+  unsigned int i;
+
+  if (strlen (string) != 6)
+    return SANE_FALSE;
+  if (strncmp (string, "0x", 2) != 0)
+    return SANE_FALSE;
+  for (i = 0; i < strlen (string); i++)
+    {
+      if (isupper (string[i]))
+	return SANE_FALSE;
+    }
+  for (i = 2; i < strlen (string); i++)
+    {
+      if (!isxdigit (string[i]))
+	return SANE_FALSE;
+    }
+  return SANE_TRUE;
+}
+
+/* Read and interprete the .desc files */
+static SANE_Bool
+read_files (void)
+{
+  struct stat stat_buf;
+  DIR *dir;
+  struct dirent *dir_entry;
+  FILE *fp;
+  char file_name[PATH_MAX];
+  SANE_Char line[4096], *word;
+  SANE_String_Const cp;
+  backend_entry *current_backend = 0;
+  type_entry *current_type = 0;
+  mfg_entry *current_mfg = 0;
+  model_entry *current_model = 0;
+  enum level current_level = level_backend;
+  char *search_dir = search_dir_spec, *end = 0;
+
+  DBG_INFO ("looking for .desc files in `%s'\n", search_dir_spec);
+
+  while (search_dir && search_dir[0])
+    {
+      end = strchr (search_dir, ':');
+      if (end)
+	end[0] = '\0';
+      DBG_INFO ("reading directory `%s'\n", search_dir);
+
+      if (stat (search_dir, &stat_buf) < 0)
+	{
+	  DBG_ERR ("cannot stat `%s' (%s)\n", search_dir, strerror (errno));
+	  return SANE_FALSE;
+	}
+      if (!S_ISDIR (stat_buf.st_mode))
+	{
+	  DBG_ERR ("`%s' is not a directory\n", search_dir);
+	  return SANE_FALSE;
+	}
+      if ((dir = opendir (search_dir)) == 0)
+	{
+	  DBG_ERR ("cannot read directory `%s' (%s)\n", search_dir,
+		   strerror (errno));
+	  return SANE_FALSE;
+	}
+
+      while ((dir_entry = readdir (dir)) != NULL)
+	{
+	  if (strlen (dir_entry->d_name) > 5 &&
+	      strcmp (dir_entry->d_name + strlen (dir_entry->d_name) - 5,
+		      ".desc") == 0)
+	    {
+	      if (strlen (search_dir)
+		  + strlen (dir_entry->d_name) + 1 + 1 > PATH_MAX)
+		{
+		  DBG_ERR ("filename too long\n");
+		  return SANE_FALSE;
+		}
+	      sprintf (file_name, "%s/%s", search_dir, dir_entry->d_name);
+	      DBG_INFO ("-> reading desc file: %s\n", file_name);
+	      fp = fopen (file_name, "r");
+	      if (!fp)
+		{
+		  DBG_ERR ("can't open desc file: %s (%s)\n", file_name,
+			   strerror (errno));
+		  return SANE_FALSE;
+		}
+	      /* now we check if everything is ok with the previous backend
+		 before we read the new one */
+	      if (current_backend)
+		{
+		  type_entry *current_type = current_backend->type;
+		  int no_usbids = 0;
+		  int no_interface = 0;
+		  int no_status = 0;
+
+		  while (current_type)
+		    {
+		      if (current_type->type == type_scanner ||
+			  current_type->type == type_stillcam ||
+			  current_type->type == type_vidcam)
+			{
+			  mfg_entry *current_mfg = current_type->mfg;
+
+			  while (current_mfg)
+			    {
+			      model_entry *current_model = current_mfg->model;
+
+			      while (current_model)
+				{
+				  if (current_model->status == status_unknown)
+				    {
+				      DBG_INFO
+					("Backend `%s': `%s' `%s' does not have a status\n",
+					 current_backend->name,
+					 current_mfg->name,
+					 current_model->name);
+				      no_status++;
+				    }
+				  if (!current_model->interface)
+				    {
+				      DBG_INFO
+					("Backend `%s': `%s' `%s' does not have an interface\n",
+					 current_backend->name,
+					 current_mfg->name,
+					 current_model->name);
+				      no_interface++;
+				    }
+				  else if (strstr (current_model->interface, "USB"))
+				    {
+				      if ((!current_model->usb_vendor_id || !current_model->usb_product_id)
+					  && !current_model->ignore_usb_id)
+					{
+					  DBG_INFO ("`%s' seems to provide a USB device "
+						    "without :usbid (%s %s)\n",
+						    current_backend->name,
+						    current_mfg->name,
+						    current_model->name);
+					  no_usbids++;
+					}
+				    }
+				  current_model = current_model->next;
+				}
+			      current_mfg = current_mfg->next;
+			    }
+			}
+		      current_type = current_type->next;
+		    }
+		  if (no_status)
+		    {
+		      DBG_WARN ("Backend `%s': %d devices without :status\n",
+				current_backend->name, no_status);
+		    }
+		  if (no_interface)
+		    {
+		      DBG_WARN ("Backend `%s': %d devices without :interface\n",
+				current_backend->name, no_interface);
+		    }
+		  if (no_usbids)
+		    {
+		      DBG_WARN ("Backend `%s': %d USB devices without :usbid\n",
+				current_backend->name, no_usbids);
+		    }
+		}
+	      desc_name = dir_entry->d_name;
+	      current_backend = 0;
+	      current_type = 0;
+	      current_mfg = 0;
+	      current_model = 0;
+	      while (sanei_config_read (line, sizeof (line), fp))
+		{
+		  char *string_entry = 0;
+		  char **two_string_entry;
+		  char **three_string_entry;
+		  word = 0;
+
+		  cp = get_token (line, &word);
+		  if (!word || cp == line)
+		    {
+		      DBG_DBG ("ignoring empty line\n");
+		      if (word)
+			free (word);
+		      word = 0;
+		      continue;
+		    }
+		  if (word[0] == ';')
+		    {
+		      DBG_DBG ("ignoring comment line\n");
+		      free (word);
+		      word = 0;
+		      continue;
+		    }
+		  DBG_DBG ("line: %s\n", line);
+
+		  if (read_keyword
+		      (line, ":backend", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      backend_entry *be = first_backend, *prev_be =
+			0, *new_be = 0;
+		      DBG_INFO ("creating backend entry `%s'\n",
+				string_entry);
+
+		      new_be = calloc (1, sizeof (backend_entry));
+		      if (!new_be)
+			{
+			  DBG_ERR ("calloc failed (%s)\n", strerror (errno));
+			  return SANE_FALSE;
+			}
+		      new_be->name = string_entry;
+		      new_be->new = SANE_FALSE;
+
+		      if (!be)
+			{
+			  first_backend = new_be;
+			  be = new_be;
+			}
+		      else
+			{
+			  while (be)
+			    {
+			      int compare =
+				string_compare (new_be->name, be->name);
+			      if (compare <= 0)
+				{
+				  backend_entry *be_tmp = be;
+				  be = new_be;
+				  be->next = be_tmp;
+				  if (!prev_be)
+				    first_backend = be;
+				  else
+				    prev_be->next = be;
+				  break;
+				}
+			      prev_be = be;
+			      be = be->next;
+			    }
+			  if (!be)	/* last entry */
+			    {
+			      prev_be->next = new_be;
+			      be = prev_be->next;
+			    }
+			}
+		      current_backend = be;
+		      current_type = 0;
+		      current_mfg = 0;
+		      current_model = 0;
+		      current_level = level_backend;
+		      continue;
+		    }
+		  if (!current_backend)
+		    {
+		      DBG_ERR ("use `:backend' keyword first\n");
+		      return SANE_FALSE;
+		    }
+		  if (read_keyword
+		      (line, ":version", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      if (current_backend->version)
+			{
+			  DBG_WARN
+			    ("overwriting version of backend `%s' to `%s'"
+			     "(was: `%s')\n", current_backend->name,
+			     string_entry, current_backend->version,
+			     current_backend->version);
+			}
+
+		      DBG_INFO ("setting version of backend `%s' to `%s'\n",
+				current_backend->name, string_entry);
+		      current_backend->version = string_entry;
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":status", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      switch (current_level)
+			{
+			case level_model:
+			  if (current_model->status != status_unknown)
+			    {
+			      DBG_WARN
+				("overwriting status of model `%s' (backend `%s')\n",
+				 current_model->name, current_backend->name);
+			    }
+			  if (strcmp (string_entry, ":minimal") == 0)
+			    {
+			      DBG_INFO
+				("setting status of model `%s' to `minimal'\n",
+				 current_model->name);
+			      current_model->status = status_minimal;
+			    }
+			  else if (strcmp (string_entry, ":basic") == 0)
+			    {
+			      DBG_INFO
+				("setting status of model `%s' to `basic'\n",
+				 current_model->name);
+			      current_model->status = status_basic;
+			    }
+			  else if (strcmp (string_entry, ":good") == 0)
+			    {
+			      DBG_INFO
+				("setting status of model `%s' to `good'\n",
+				 current_model->name);
+			      current_model->status = status_good;
+			    }
+			  else if (strcmp (string_entry, ":complete") == 0)
+			    {
+			      DBG_INFO
+				("setting status of model `%s' to `complete'\n",
+				 current_model->name);
+			      current_model->status = status_complete;
+			    }
+			  else if (strcmp (string_entry, ":untested") == 0)
+			    {
+			      DBG_INFO
+				("setting status of model `%s' to `untested'\n",
+				 current_model->name);
+			      current_model->status = status_untested;
+			    }
+			  else if (strcmp (string_entry, ":unsupported") == 0)
+			    {
+			      DBG_INFO
+				("setting status of model `%s' to `unsupported'\n",
+				 current_model->name);
+			      current_model->status = status_unsupported;
+			    }
+			  else
+			    {
+			      DBG_ERR
+				("unknown status of model `%s': `%s' (backend `%s')\n",
+				 current_model->name, string_entry,
+				 current_backend->name);
+			      current_model->status = status_untested;
+			      return SANE_FALSE;
+			    }
+			  break;
+			default:
+			  DBG_ERR
+			    ("level %d not implemented for :status (backend `%s')\n",
+			     current_level, current_backend->name);
+			  return SANE_FALSE;
+			}
+
+
+		      continue;
+		    }
+		  if (read_keyword (line, ":new", param_string, &string_entry)
+		      == SANE_STATUS_GOOD)
+		    {
+		      if (strcmp (string_entry, ":yes") == 0)
+			{
+			  DBG_INFO
+			    ("backend %s is new in this SANE release\n",
+			     current_backend->name);
+			  current_backend->new = SANE_TRUE;
+			}
+		      else if (strcmp (string_entry, ":no") == 0)
+			{
+			  DBG_INFO
+			    ("backend %s is NOT new in this SANE release\n",
+			     current_backend->name);
+			  current_backend->new = SANE_FALSE;
+			}
+		      else
+			{
+			  DBG_ERR ("unknown :new parameter of backend `%s': "
+				   "`%s'\n", current_backend->name,
+				   string_entry);
+			  current_backend->new = SANE_FALSE;
+			  return SANE_FALSE;
+			}
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":manpage", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      if (current_backend->manpage)
+			{
+			  DBG_WARN
+			    ("overwriting manpage of backend `%s' to `%s'"
+			     "(was: `%s')\n", current_backend->name,
+			     string_entry, current_backend->manpage);
+			}
+
+		      DBG_INFO ("setting manpage of backend `%s' to `%s'\n",
+				current_backend->name, string_entry);
+		      current_backend->manpage = string_entry;
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":devicetype", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      type_entry *type = 0;
+
+		      type = current_backend->type;
+
+		      DBG_INFO
+			("adding `%s' to list of device types of backend "
+			 "`%s'\n", string_entry, current_backend->name);
+
+		      if (type)
+			{
+			  while (type->next)
+			    type = type->next;
+			  type->next = calloc (1, sizeof (type_entry));
+			  type = type->next;
+			}
+		      else
+			{
+			  current_backend->type =
+			    calloc (1, sizeof (type_entry));
+			  type = current_backend->type;
+			}
+
+		      type->type = type_unknown;
+		      if (strcmp (string_entry, ":scanner") == 0)
+			{
+			  DBG_INFO ("setting device type of backend `%s' to "
+				    "scanner\n", current_backend->name);
+			  type->type = type_scanner;
+			}
+		      else if (strcmp (string_entry, ":stillcam") == 0)
+			{
+			  DBG_INFO ("setting device type of backend `%s' to "
+				    "still camera\n", current_backend->name);
+			  type->type = type_stillcam;
+			}
+		      else if (strcmp (string_entry, ":vidcam") == 0)
+			{
+			  DBG_INFO ("setting device type of backend `%s' to "
+				    "video camera\n", current_backend->name);
+			  type->type = type_vidcam;
+			}
+		      else if (strcmp (string_entry, ":api") == 0)
+			{
+			  DBG_INFO ("setting device type of backend `%s' to "
+				    "API\n", current_backend->name);
+			  type->type = type_api;
+			}
+		      else if (strcmp (string_entry, ":meta") == 0)
+			{
+			  DBG_INFO ("setting device type of backend `%s' to "
+				    "meta\n", current_backend->name);
+			  type->type = type_meta;
+			}
+		      else
+			{
+			  DBG_ERR
+			    ("unknown device type of backend `%s': `%s'\n",
+			     current_backend->name, string_entry);
+			  type->type = type_unknown;
+			  return SANE_FALSE;
+			}
+		      current_type = type;
+		      current_mfg = 0;
+		      current_model = 0;
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":desc", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      if (!current_type)
+			{
+			  DBG_ERR
+			    ("use `:devicetype' keyword first (backend `%s')\n",
+			     current_backend->name);
+			  return SANE_FALSE;
+			}
+		      if (current_type->type < type_meta)
+			{
+			  DBG_ERR
+			    ("use `:desc' for `:api' and `:meta' only (backend `%s')\n",
+			     current_backend->name);
+			  return SANE_FALSE;
+			}
+
+		      if (current_type->desc)
+			{
+			  DBG_WARN
+			    ("overwriting description of  device type of "
+			     "backend `%s' to `%s' (was: `%s')\n",
+			     current_backend->name, string_entry,
+			     current_type->desc);
+			}
+
+		      DBG_INFO
+			("setting description of backend `%s' to `%s'\n",
+			 current_backend->name, string_entry);
+		      current_type->desc = calloc (1, sizeof (desc_entry));
+		      if (!current_type->desc)
+			{
+			  DBG_ERR ("calloc failed (%s)\n", strerror (errno));
+			  return SANE_FALSE;
+			}
+		      current_type->desc->desc = string_entry;
+		      current_level = level_desc;
+		      current_mfg = 0;
+		      current_model = 0;
+		      continue;
+		    }
+		  if (read_keyword (line, ":mfg", param_string, &string_entry)
+		      == SANE_STATUS_GOOD)
+		    {
+		      mfg_entry *mfg = 0;
+
+		      if (!current_type)
+			{
+			  DBG_ERR
+			    ("use `:devicetype' keyword first (backend `%s')\n",
+			     current_backend->name);
+			  return SANE_FALSE;
+			}
+		      if (current_type->type >= type_meta)
+			{
+			  DBG_ERR
+			    ("use `:mfg' for hardware devices only (backend `%s')\n",
+			     current_backend->name);
+			  return SANE_FALSE;
+			}
+
+		      mfg = current_type->mfg;
+		      if (mfg)
+			{
+			  while (mfg->next)
+			    mfg = mfg->next;
+			  mfg->next = calloc (1, sizeof (mfg_entry));
+			  mfg = mfg->next;
+			}
+		      else
+			{
+			  current_type->mfg = calloc (1, sizeof (mfg_entry));
+			  mfg = current_type->mfg;
+			}
+
+		      if (!mfg)
+			{
+			  DBG_ERR ("calloc failed (%s)\n", strerror (errno));
+			  return SANE_FALSE;
+			}
+		      mfg->name = string_entry;
+		      DBG_INFO ("adding mfg entry %s to backend `%s'\n",
+				string_entry, current_backend->name);
+		      current_mfg = mfg;
+		      current_model = 0;
+		      current_level = level_mfg;
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":model", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      model_entry *model = 0;
+
+		      if (!current_type)
+			{
+			  DBG_ERR
+			    ("use `:devicetype' keyword first (backend `%s')\n",
+			     current_backend->name);
+			  return SANE_FALSE;
+			}
+		      if (current_level != level_mfg
+			  && current_level != level_model)
+			{
+			  DBG_ERR
+			    ("use `:mfg' keyword first (backend `%s')\n",
+			     current_backend->name);
+			  return SANE_FALSE;
+			}
+		      model = current_mfg->model;
+		      if (model)
+			{
+			  while (model->next)
+			    model = model->next;
+			  model->next = calloc (1, sizeof (model_entry));
+			  model = model->next;
+			}
+		      else
+			{
+			  current_mfg->model =
+			    calloc (1, sizeof (model_entry));
+			  model = current_mfg->model;
+			}
+
+		      if (!model)
+			{
+			  DBG_ERR ("calloc failed (%s)\n", strerror (errno));
+			  return SANE_FALSE;
+			}
+		      model->name = string_entry;
+		      model->status = status_unknown;
+		      DBG_INFO
+			("adding model entry %s to manufacturer `%s'\n",
+			 string_entry, current_mfg->name);
+		      current_model = model;
+		      current_level = level_model;
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":interface", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      if (!current_model)
+			{
+			  DBG_WARN
+			    ("ignored `%s' :interface, only allowed for "
+			     "hardware devices\n", current_backend->name);
+			  continue;
+			}
+
+		      if (current_model->interface)
+			{
+			  DBG_WARN ("overwriting `%s's interface of model "
+				    "`%s' to `%s' (was: `%s')\n",
+				    current_backend->name,
+				    current_model->name, string_entry,
+				    current_model->interface);
+			}
+
+		      DBG_INFO ("setting interface of model `%s' to `%s'\n",
+				current_model->name, string_entry);
+		      current_model->interface = string_entry;
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":scsi", param_three_strings,
+		       &three_string_entry) == SANE_STATUS_GOOD)
+		    {
+		      if (!current_model)
+			{
+			  DBG_WARN
+			    ("ignored `%s' :scsi, only allowed for "
+			     "hardware devices\n", current_backend->name);
+			  continue;
+			}
+
+		      DBG_INFO ("setting scsi vendor and product ids of model `%s' to `%s/%s'\n",
+				current_model->name, three_string_entry[0], three_string_entry[1]);
+		      if (strcasecmp (three_string_entry[0], "ignore") == 0)
+			 {
+				DBG_INFO ("Ignoring `%s's scsi-entries of `%s'\n",
+						current_backend->name,
+						current_model->name);
+				continue;
+			 }
+			 if (strcasecmp (three_string_entry[2], "processor") == 0){
+				current_model->scsi_is_processor = SANE_TRUE;
+				current_model->scsi_vendor_id = three_string_entry[0];
+				current_model->scsi_product_id = three_string_entry[1];
+			 }
+			 else
+			 {
+				DBG_INFO ("scsi-format info in %s is invalid -> break\n", current_backend->name);
+				continue;
+			 }
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":usbid", param_two_strings,
+		       &two_string_entry) == SANE_STATUS_GOOD)
+		    {
+		      if (!current_model)
+			{
+			  DBG_WARN
+			    ("ignored `%s' :usbid, only allowed for "
+			     "hardware devices\n", current_backend->name);
+			  continue;
+			}
+		      if (strcasecmp (two_string_entry[0], "ignore") == 0)
+			{
+			  DBG_INFO ("Ignoring `%s's USB ids of `%s'\n",
+				    current_backend->name,
+				    current_model->name);
+			  current_model->ignore_usb_id = SANE_TRUE;
+			  continue;
+			}
+		      if (!check_hex (two_string_entry[0]))
+			{
+			  DBG_WARN ("`%s's USB vendor id of `%s' is "
+				    "not a lowercase 4-digit hex number: "
+				    "`%s'\n", current_backend->name,
+				    current_model->name, two_string_entry[0]);
+			  continue;
+			}
+		      if (!check_hex (two_string_entry[1]))
+			{
+			  DBG_WARN ("`%s's USB product id of `%s' is "
+				    "not a lowercase 4-digit hex number: "
+				    "`%s'\n", current_backend->name,
+				    current_model->name, two_string_entry[1]);
+			  continue;
+			}
+
+		      if (current_model->usb_vendor_id || current_model->usb_product_id)
+			{
+			  DBG_WARN ("overwriting `%s's USB ids of model "
+				    "`%s' to `%s/%s' (was: `%s/%s')\n",
+				    current_backend->name,
+				    current_model->name, two_string_entry[0],
+				    two_string_entry[1],
+				    current_model->usb_vendor_id,
+				    current_model->usb_product_id);
+			}
+
+		      DBG_INFO ("setting USB vendor and product ids of model `%s' to `%s/%s'\n",
+				current_model->name, two_string_entry[0], two_string_entry[1]);
+		      current_model->usb_vendor_id = two_string_entry[0];
+		      current_model->usb_product_id = two_string_entry[1];
+		      continue;
+		    }
+		  if (read_keyword (line, ":url", param_string, &string_entry)
+		      == SANE_STATUS_GOOD)
+		    {
+		      switch (current_level)
+			{
+			case level_backend:
+			  current_backend->url =
+			    update_url_list (current_backend->url,
+					     string_entry);
+			  DBG_INFO ("adding `%s' to list of urls of backend "
+				    "`%s'\n", string_entry,
+				    current_backend->name);
+			  break;
+			case level_mfg:
+			  current_mfg->url =
+			    update_url_list (current_mfg->url, string_entry);
+			  DBG_INFO ("adding `%s' to list of urls of mfg "
+				    "`%s'\n", string_entry,
+				    current_mfg->name);
+			  break;
+			case level_desc:
+			  current_type->desc->url =
+			    update_url_list (current_type->desc->url,
+					     string_entry);
+			  DBG_INFO
+			    ("adding `%s' to list of urls of description "
+			     "for backend `%s'\n", string_entry,
+			     current_backend->name);
+			  break;
+			case level_model:
+			  current_model->url =
+			    update_url_list (current_model->url,
+					     string_entry);
+			  DBG_INFO ("adding `%s' to list of urls of model "
+				    "`%s'\n", string_entry,
+				    current_model->name);
+			  break;
+			default:
+			  DBG_ERR
+			    ("level %d not implemented for :url (backend `%s')\n",
+			     current_level, current_backend->name);
+			  return SANE_FALSE;
+			}
+		      continue;
+		    }
+		  if (read_keyword
+		      (line, ":comment", param_string,
+		       &string_entry) == SANE_STATUS_GOOD)
+		    {
+		      switch (current_level)
+			{
+			case level_backend:
+			  current_backend->comment = string_entry;
+			  DBG_INFO ("setting comment of backend %s to `%s'\n",
+				    current_backend->name, string_entry);
+			  break;
+			case level_mfg:
+			  current_mfg->comment = string_entry;
+			  DBG_INFO
+			    ("setting comment of manufacturer %s to `%s'\n",
+			     current_mfg->name, string_entry);
+			  break;
+			case level_desc:
+			  current_type->desc->comment = string_entry;
+			  DBG_INFO ("setting comment of description for "
+				    "backend %s to `%s'\n",
+				    current_backend->name, string_entry);
+			  break;
+			case level_model:
+			  current_model->comment = string_entry;
+			  DBG_INFO ("setting comment of model %s to `%s'\n",
+				    current_model->name, string_entry);
+			  break;
+			default:
+			  DBG_ERR
+			    ("level %d not implemented for `:comment' (backend `%s')\n",
+			     current_level, current_backend->name);
+			  return SANE_FALSE;
+			}
+		      continue;
+		    }
+		  DBG_ERR
+		    ("unknown keyword token in line `%s' of file `%s'\n",
+		     line, file_name);
+		  return SANE_FALSE;
+		}		/* while (sanei_config_readline) */
+	      fclose (fp);
+	    }			/* if (strlen) */
+	}			/* while (direntry) */
+      if (closedir(dir) != 0)
+	{
+	  DBG_ERR ("cannot close directory `%s' (%s)\n", search_dir,
+		   strerror (errno));
+	  return SANE_FALSE;
+	}
+      if (end)
+	search_dir = end + 1;
+      else
+	search_dir = (search_dir + strlen (search_dir));
+    }
+
+  desc_name = 0;
+  if (!first_backend)
+    {
+      DBG_ERR ("Couldn't find any .desc file\n");
+      return SANE_FALSE;
+    }
+  return SANE_TRUE;
+}
+
+/* Create a model_record_entry based on a model_entry */
+static model_record_entry *
+create_model_record (model_entry * model)
+{
+  model_record_entry *model_record;
+
+  model_record = calloc (1, sizeof (model_record_entry));
+  if (!model_record)
+    {
+      DBG_ERR ("create_model_record: couldn't calloc model_record_entry\n");
+      exit (1);
+    }
+  model_record->name = model->name;
+  model_record->status = model->status;
+  model_record->interface = model->interface;
+  model_record->url = model->url;
+  model_record->comment = model->comment;
+  model_record->usb_vendor_id = model->usb_vendor_id;
+  model_record->usb_product_id = model->usb_product_id;
+  model_record->scsi_vendor_id = model->scsi_vendor_id;
+  model_record->scsi_product_id = model->scsi_product_id;
+  model_record->scsi_is_processor = model->scsi_is_processor;
+  return model_record;
+}
+
+/* Calculate the priority of statuses: */
+/* minimal, basic, good, complete -> 2, untested -> 1, unsupported -> 0 */
+static int
+calc_priority (status_entry status)
+{
+  switch (status)
+    {
+    case status_untested:
+      return 1;
+    case status_unsupported:
+      return 0;
+    default:
+      return 2;
+    }
+}
+
+/* Insert model into list at the alphabetically correct position */
+static model_record_entry *
+update_model_record_list (model_record_entry * first_model_record,
+			  model_entry * model, backend_entry * be)
+{
+  model_record_entry *model_record = first_model_record;
+
+  if (!first_model_record)
+    {
+      /* First model for this manufacturer */
+      first_model_record = create_model_record (model);
+      model_record = first_model_record;
+    }
+  else
+    {
+      model_record_entry *prev_model_record = 0;
+
+      while (model_record)
+	{
+	  int compare = string_compare (model->name, model_record->name);
+	  if (compare <= 0)
+	    {
+	      model_record_entry *tmp_model_record = model_record;
+	      if ((compare == 0) &&
+		  (string_compare (model->interface, model_record->interface) == 0) &&
+		  (string_compare (model->usb_vendor_id, model_record->usb_vendor_id) == 0) &&
+		  (string_compare (model->usb_product_id, model_record->usb_product_id) == 0))
+		{
+		  /* Two entries for the same model */
+		  int new_priority = calc_priority (model->status);
+		  int old_priority = calc_priority (model_record->status);
+		  if (new_priority < old_priority)
+		    {
+		      DBG_DBG
+			("update_model_record_list: model %s ignored, backend %s has "
+			 "higher priority\n", model->name,
+			 model_record->be->name);
+		      return first_model_record;
+		    }
+		  if (new_priority > old_priority)
+		    {
+		      DBG_DBG
+			("update_model_record_list: model %s overrides the one from backend %s\n",
+			 model->name, model_record->be->name);
+		      tmp_model_record = model_record->next;
+		    }
+		}
+	      /* correct position */
+	      model_record = create_model_record (model);
+	      model_record->next = tmp_model_record;
+	      if (!prev_model_record)
+		first_model_record = model_record;
+	      else
+		prev_model_record->next = model_record;
+	      break;
+	    }
+	  prev_model_record = model_record;
+	  model_record = model_record->next;
+	}
+      if (!model_record)	/* last entry */
+	{
+	  prev_model_record->next = create_model_record (model);
+	  model_record = prev_model_record->next;
+	}
+    }				/* if (first_model_record) */
+  model_record->be = be;
+  DBG_DBG ("update_model_record_list: added model %s\n", model->name);
+  return first_model_record;
+}
+
+
+/* Insert manufacturer into list at the alphabetically correct position, */
+/* create new record if neccessary */
+static mfg_record_entry *
+update_mfg_record_list (mfg_record_entry * first_mfg_record, mfg_entry * mfg,
+			backend_entry * be)
+{
+  model_entry *model = mfg->model;
+  mfg_record_entry *mfg_record = first_mfg_record;
+
+  while (mfg_record)
+    {
+      if (string_compare (mfg_record->name, mfg->name) == 0)
+	{
+	  /* Manufacturer already exists */
+	  url_entry *mfg_url = mfg->url;
+
+	  /* Manufacturer comments and (additional) URLs? */
+	  if (!mfg_record->comment)
+	    mfg_record->comment = mfg->comment;
+	  while (mfg_url && mfg_url->name)
+	    {
+	      mfg_record->url = update_url_list (mfg_record->url,
+						 mfg_url->name);
+	      mfg_url = mfg_url->next;
+	    }
+	  break;
+	}
+      mfg_record = mfg_record->next;
+    }
+
+  if (!mfg_record)
+    {
+      /* Manufacturer doesn't exist yet */
+      url_entry *url = mfg->url;
+
+      mfg_record = calloc (1, sizeof (mfg_record_entry));
+      if (!mfg_record)
+	{
+	  DBG_ERR ("update_mfg_record_list: couldn't calloc "
+		   "mfg_record_entry\n");
+	  exit (1);
+	}
+      mfg_record->name = mfg->name;
+      mfg_record->comment = mfg->comment;
+      while (url)
+	{
+	  mfg_record->url = update_url_list (mfg_record->url, url->name);
+	  url = url->next;
+	}
+      if (first_mfg_record != 0)
+	{
+	  /* We already have one manufacturer in the list */
+	  mfg_record_entry *new_mfg_record = mfg_record;
+	  mfg_record_entry *prev_mfg_record = 0;
+
+	  mfg_record = first_mfg_record;
+
+	  while (mfg_record)
+	    {
+	      int compare =
+		string_compare (new_mfg_record->name, mfg_record->name);
+	      if (compare <= 0)
+		{
+		  mfg_record_entry *tmp_mfg_record = mfg_record;
+		  mfg_record = new_mfg_record;
+		  mfg_record->next = tmp_mfg_record;
+		  if (!prev_mfg_record)
+		    first_mfg_record = mfg_record;
+		  else
+		    prev_mfg_record->next = mfg_record;
+		  break;
+		}
+	      prev_mfg_record = mfg_record;
+	      mfg_record = mfg_record->next;
+	    }
+	  if (!mfg_record)	/* last entry */
+	    {
+	      prev_mfg_record->next = new_mfg_record;
+	      mfg_record = prev_mfg_record->next;
+	    }
+	}
+      else
+	first_mfg_record = mfg_record;
+      DBG_DBG ("update_mfg_record_list: created mfg %s\n", mfg_record->name);
+    }				/* if (!mfg_record) */
+
+  /* create model entries */
+  while (model)
+    {
+      mfg_record->model_record =
+	update_model_record_list (mfg_record->model_record, model, be);
+      model = model->next;
+    }
+  return first_mfg_record;
+}
+
+/* Create a sorted list of manufacturers based on the backends list */
+static mfg_record_entry *
+create_mfg_list (device_type dev_type)
+{
+  mfg_record_entry *first_mfg_record = 0;
+  backend_entry *be = first_backend;
+
+  DBG_DBG ("create_mfg_list: start\n");
+  while (be)
+    {
+      type_entry *type = be->type;
+      while (type)
+	{
+	  if (type->type == dev_type)
+	    {
+	      mfg_entry *mfg = type->mfg;
+	      while (mfg)
+		{
+		  first_mfg_record =
+		    update_mfg_record_list (first_mfg_record, mfg, be);
+		  mfg = mfg->next;
+		}
+	    }
+	  type = type->next;
+	}
+      be = be->next;
+    }
+  DBG_DBG ("create_mfg_list: exit\n");
+  return first_mfg_record;
+}
+
+/* Print an ASCII list with all the information we have */
+static void
+ascii_print_backends (void)
+{
+  backend_entry *be;
+
+  be = first_backend;
+  while (be)
+    {
+      url_entry *url = be->url;
+      type_entry *type = be->type;
+
+      if (be->name)
+	printf ("backend `%s'\n", be->name);
+      else
+	printf ("backend *none*\n");
+
+      if (be->version)
+	printf (" version `%s'\n", be->version);
+      else
+	printf (" version *none*\n");
+
+      if (be->new)
+	printf (" NEW!\n");
+
+      if (be->manpage)
+	printf (" manpage `%s'\n", be->manpage);
+      else
+	printf (" manpage *none*\n");
+
+      if (url)
+	while (url)
+	  {
+	    printf (" url `%s'\n", url->name);
+	    url = url->next;
+	  }
+      else
+	printf (" url *none*\n");
+
+      if (be->comment)
+	printf (" comment `%s'\n", be->comment);
+      else
+	printf (" comment *none*\n");
+
+      if (type)
+	while (type)
+	  {
+	    switch (type->type)
+	      {
+	      case type_scanner:
+		printf (" type scanner\n");
+		break;
+	      case type_stillcam:
+		printf (" type stillcam\n");
+		break;
+	      case type_vidcam:
+		printf (" type vidcam\n");
+		break;
+	      case type_meta:
+		printf (" type meta\n");
+		break;
+	      case type_api:
+		printf (" type api\n");
+		break;
+	      default:
+		printf (" type *unknown*\n");
+		break;
+	      }
+	    if (type->desc)
+	      {
+		url_entry *url = type->desc->url;
+		printf ("  desc `%s'\n", type->desc->desc);
+		if (url)
+		  while (url)
+		    {
+		      printf ("   url `%s'\n", url->name);
+		      url = url->next;
+		    }
+		else
+		  printf ("   url *none*\n");
+
+		if (type->desc->comment)
+		  printf ("   comment `%s'\n", type->desc->comment);
+		else
+		  printf ("   comment *none*\n");
+	      }
+	    else if (type->type >= type_meta)
+	      printf ("  desc *none*\n");
+
+	    if (type->mfg)
+	      {
+		mfg_entry *mfg = type->mfg;
+		while (mfg)
+		  {
+		    model_entry *model = mfg->model;
+		    url_entry *url = mfg->url;
+
+		    printf ("  mfg `%s'\n", mfg->name);
+		    if (url)
+		      while (url)
+			{
+			  printf ("   url `%s'\n", url->name);
+			  url = url->next;
+			}
+		    else
+		      printf ("   url *none*\n");
+
+		    if (mfg->comment)
+		      printf ("   comment `%s'\n", mfg->comment);
+		    else
+		      printf ("   comment *none*\n");
+
+		    if (model)
+		      while (model)
+			{
+			  url_entry *url = model->url;
+			  printf ("   model `%s'\n", model->name);
+			  if (model->interface)
+			    printf ("    interface `%s'\n", model->interface);
+			  else
+			    printf ("    interface *none*\n");
+
+			  if (model->usb_vendor_id)
+			    printf ("    usb-vendor-id `%s'\n", model->usb_vendor_id);
+			  else
+			    printf ("    usb-vendor-id *none*\n");
+
+			  if (model->usb_product_id)
+			    printf ("    usb-product-id `%s'\n", model->usb_product_id);
+			  else
+			    printf ("    usb-product-id *none*\n");
+
+			  switch (model->status)
+			    {
+			    case status_minimal:
+			      printf ("    status minimal\n");
+			      break;
+			    case status_basic:
+			      printf ("    status basic\n");
+			      break;
+			    case status_good:
+			      printf ("    status good\n");
+			      break;
+			    case status_complete:
+			      printf ("    status complete\n");
+			      break;
+			    case status_untested:
+			      printf ("    status untested\n");
+			      break;
+			    case status_unsupported:
+			      printf ("    status unsupported\n");
+			      break;
+			    default:
+			      printf ("    status *unknown*\n");
+			      break;
+			    }
+
+			  if (url)
+			    while (url)
+			      {
+				printf ("    url `%s'\n", url->name);
+				url = url->next;
+			      }
+			  else
+			    printf ("    url *none*\n");
+
+			  if (model->comment)
+			    printf ("    comment `%s'\n", model->comment);
+			  else
+			    printf ("    comment *none*\n");
+
+			  model = model->next;
+			}
+		    else
+		      printf ("   model *none*\n");
+
+		    mfg = mfg->next;
+		  }		/* while (mfg) */
+	      }
+	    else if (type->type < type_meta)
+	      printf ("  mfg *none*\n");
+	    type = type->next;
+	  }			/* while (type) */
+      else
+	printf (" type *none*\n");
+      be = be->next;
+    }				/* while (be) */
+}
+
+
+static char *
+clean_string (char *c)
+{
+  /* not avoided characters */
+
+  char *aux;
+
+  aux = malloc (strlen (c) * sizeof (char) * 6);
+
+  *aux = '\0';
+
+  while (*c != '\0')
+    {
+
+      /*limit to printable ASCII only*/
+      if(*c < 0x20 || *c > 0x7e){
+        c++;
+        continue;
+      }
+
+      switch (*c)
+	{
+	case '<':
+	  aux = strcat (aux, "&lt;");
+	  break;
+	case '>':
+	  aux = strcat (aux, "&gt;");
+	  break;
+	case '\'':
+	  aux = strcat (aux, "&apos;");
+	  break;
+	case '&':
+	  aux = strcat (aux, "&amp;");
+	  break;
+	default:
+	  aux = strncat (aux, c, 1);
+	}
+      c = c + 1;
+    }
+  return aux;
+}
+
+/* Print an XML list with all the information we have */
+static void
+xml_print_backends (void)
+{
+  backend_entry *be;
+
+  be = first_backend;
+  printf ("<backends>\n");
+  while (be)
+    {
+      url_entry *url = be->url;
+      type_entry *type = be->type;
+
+      if (be->name)
+	printf ("<backend name=\"%s\">\n", clean_string (be->name));
+      else
+	printf ("<backend name=\"*none\">\n");
+
+      if (be->version)
+	printf ("<version>%s</version> \n", clean_string (be->version));
+      else
+	printf ("<version>*none*</version>\n");
+
+      if (be->new)
+	printf ("<new state=\"yes\"/>\n");
+      else
+	printf ("<new state=\"no\"/>\n");
+
+
+      if (be->manpage)
+	printf (" <manpage>%s</manpage>\n", clean_string (be->manpage));
+      else
+	printf (" <manpage>*none*</manpage>\n");
+
+      if (url)
+	while (url)
+	  {
+	    printf (" <url>%s</url>\n", clean_string (url->name));
+	    url = url->next;
+	  }
+      else
+	printf (" <url>*none*</url>\n");
+
+      if (be->comment)
+	printf (" <comment>%s</comment>\n", clean_string (be->comment));
+      else
+	printf (" <comment>*none*</comment>\n");
+
+      if (type)
+	while (type)
+	  {
+
+	    switch (type->type)
+	      {
+	      case type_scanner:
+		printf (" <type def=\"scanner\">\n");
+		break;
+	      case type_stillcam:
+		printf (" <type def=\"stillcam\">\n");
+		break;
+	      case type_vidcam:
+		printf (" <type def=\"vidcam\">\n");
+		break;
+	      case type_meta:
+		printf (" <type def=\"meta\">\n");
+		break;
+	      case type_api:
+		printf (" <type def=\"api\">\n");
+		break;
+	      default:
+		printf (" <type def=\"*unknown*\">\n");
+		break;
+	      }
+	    if (type->desc)
+	      {
+		url_entry *url = type->desc->url;
+		printf ("   <desc>%s</desc>\n",
+			clean_string (type->desc->desc));
+		if (url)
+		  while (url)
+		    {
+		      printf ("   <url>%s</url>\n", clean_string (url->name));
+		      url = url->next;
+		    }
+		else
+		  printf ("   <url>*none*</url>\n");
+
+		if (type->desc->comment)
+		  printf ("   <comment>%s</comment>\n",
+			  clean_string (type->desc->comment));
+		else
+		  printf ("   <comment>*none*</comment>\n");
+	      }
+	    else if (type->type >= type_meta)
+	      printf ("  <desc>*none*</desc>\n");
+
+	    if (type->mfg)
+	      {
+		mfg_entry *mfg = type->mfg;
+		while (mfg)
+		  {
+		    model_entry *model = mfg->model;
+		    url_entry *url = mfg->url;
+
+		    printf (" <mfg name=\"%s\">\n", clean_string (mfg->name));
+		    if (url)
+		      while (url)
+			{
+			  printf ("  <url>`%s'</url>\n",
+				  clean_string (url->name));
+			  url = url->next;
+			}
+		    else
+		      printf ("  <url>*none*</url>\n");
+
+		    if (mfg->comment)
+		      printf ("  <comment>%s</comment>\n",
+			      clean_string (mfg->comment));
+		    else
+		      printf ("  <comment>*none*</comment>\n");
+
+		    if (model)
+		      while (model)
+			{
+			  url_entry *url = model->url;
+			  printf ("   <model name=\"%s\">\n",
+				  clean_string (model->name));
+			  if (model->interface)
+			    printf ("    <interface>%s</interface>\n",
+				    clean_string (model->interface));
+			  else
+			    printf ("    <interface>*none*</interface>\n");
+
+			  if (model->usb_vendor_id)
+			    printf ("    <usbvendorid>%s</usbvendorid>\n",
+				    clean_string (model->usb_vendor_id));
+			  else
+			    printf ("    <usbvendorid>*none*</usbvendorid>\n");
+			  if (model->usb_product_id)
+			    printf ("    <usbproductid>%s</usbproductid>\n",
+				    clean_string (model->usb_product_id));
+			  else
+			    printf ("    <usbproductid>*none*</usbproductid>\n");
+
+			  switch (model->status)
+			    {
+			    case status_minimal:
+			      printf ("    <status>minimal</status>\n");
+			      break;
+			    case status_basic:
+			      printf ("    <status>basic</status>\n");
+			      break;
+			    case status_good:
+			      printf ("    <status>good</status>\n");
+			      break;
+			    case status_complete:
+			      printf ("    <status>complete</status>\n");
+			      break;
+			    case status_untested:
+			      printf ("    <status>untested</status>\n");
+			      break;
+			    case status_unsupported:
+			      printf ("    <status>unsupported</status>\n");
+			      break;
+			    default:
+			      printf ("    <status>*unknown*</status>\n");
+			      break;
+			    }
+
+			  if (url)
+			    while (url)
+			      {
+				printf ("    <url>%s</url>\n",
+					clean_string (url->name));
+				url = url->next;
+			      }
+			  else
+			    printf ("    <url>*none*</url>\n");
+
+			  if (model->comment)
+			    printf ("    <comment>%s</comment>\n",
+				    clean_string (model->comment));
+			  else
+			    printf ("    <comment>*none*</comment>\n");
+
+			  model = model->next;
+			  printf ("   </model>\n");
+			}	/* while (model) */
+		    else
+		      printf ("   <model name=\"*none*\" />\n");
+
+		    printf (" </mfg>\n");
+		    mfg = mfg->next;
+		  }		/* while (mfg) */
+	      }
+	    else if (type->type < type_meta)
+	      printf ("  <mfg>*none*</mfg>\n");
+	    type = type->next;
+	    printf (" </type>\n");
+	  }			/* while (type) */
+      else
+	printf (" <type>*none*</type>\n");
+      printf ("</backend>\n");
+      be = be->next;
+
+    }				/* while (be) */
+  printf ("</backends>\n");
+}
+
+/* calculate statistics about supported devices per device type*/
+static void
+calculate_statistics_per_type (device_type dev_type, statistics_type num)
+{
+  backend_entry *be = first_backend;
+
+  while (be)
+    {
+      type_entry *type = be->type;
+
+      while (type)
+	{
+	  if (type->type == dev_type)
+	    {
+	      mfg_entry *mfg = type->mfg;
+	      model_entry *model;
+
+	      if (type->desc)
+		{
+		  num[status_complete]++;
+		  type = type->next;
+		  continue;
+		}
+
+	      if (!mfg)
+		{
+		  type = type->next;
+		  continue;
+		}
+
+	      mfg = type->mfg;
+	      while (mfg)
+		{
+		  model = mfg->model;
+		  if (model)
+		    {
+		      while (model)
+			{
+			  enum status_entry status = model->status;
+			  num[status]++;
+			  model = model->next;
+			}	/* while (model) */
+		    }		/* if (num_models) */
+		  mfg = mfg->next;
+		}		/* while (mfg) */
+	    }			/* if (type->type) */
+	  type = type->next;
+	}			/* while (type) */
+      be = be->next;
+    }				/* while (be) */
+}
+
+static void
+html_print_statistics_cell (const char * color, int number)
+{
+  printf ("<td align=center><font color=%s>%d</font></td>\n",
+	  color, number);
+}
+
+static void
+html_print_statistics_per_type (device_type dev_type)
+{
+  statistics_type num = {0, 0, 0, 0, 0, 0, 0};
+  status_entry status;
+
+  calculate_statistics_per_type (dev_type, num);
+  printf ("<tr>\n");
+  printf("<td align=center><a href=\"#%s\">%s</a></td>\n",
+	 device_type_aname [dev_type], device_type_name [dev_type]);
+
+  html_print_statistics_cell
+    (COLOR_UNKNOWN,
+     num[status_minimal] + num[status_basic] + num[status_good] +
+     num[status_complete] + num[status_untested] + num[status_unsupported]);
+  if (dev_type == type_scanner || dev_type == type_stillcam
+      || dev_type == type_vidcam)
+    {
+      html_print_statistics_cell
+	(COLOR_UNKNOWN,
+	 num[status_minimal] + num[status_basic] + num[status_good] +
+	 num[status_complete]);
+      for (status = status_complete; status >= status_unsupported; status--)
+	html_print_statistics_cell (status_color [status], num [status]);
+    }
+  else
+    {
+      printf ("<td align=center colspan=7>n/a</td>\n");
+    }
+  printf ("</tr>\n");
+}
+
+/* print html statistcis */
+static void
+html_print_summary (void)
+{
+  device_type dev_type;
+  status_entry status;
+
+  printf ("<h2>Summary</h2>\n");
+  printf ("<table border=1>\n");
+  printf ("<tr bgcolor=E0E0FF>\n");
+  printf ("<th align=center rowspan=3>Device type</th>\n");
+  printf ("<th align=center colspan=8>Number of devices</th>\n");
+  printf ("</tr>\n");
+  printf ("<tr bgcolor=E0E0FF>\n");
+  printf ("<th align=center rowspan=2>Total</th>\n");
+  printf ("<th align=center colspan=5>Supported</th>\n");
+  printf ("<th align=center rowspan=2><font color=" COLOR_UNTESTED
+	  ">%s</font></th>\n", status_name[status_untested]);
+  printf ("<th align=center rowspan=2><font color=" COLOR_UNSUPPORTED
+	  ">%s</font></th>\n", status_name[status_unsupported]);
+  printf ("</tr>\n");
+  printf ("<tr bgcolor=E0E0FF>\n");
+  printf ("<th align=center>Sum</th>\n");
+  for (status = status_complete; status >= status_minimal; status--)
+    printf ("<th align=center><font color=%s>%s</font></th>\n",
+	    status_color[status], status_name[status]);
+  printf ("</tr>\n");
+  for (dev_type = type_scanner; dev_type <= type_api; dev_type++)
+    html_print_statistics_per_type (dev_type);
+  printf ("</table>\n");
+}
+
+
+/* Generate a name used for <a name=...> HTML tags */
+static char *
+html_generate_anchor_name (device_type dev_type, char *manufacturer_name)
+{
+  char *name = malloc (strlen (manufacturer_name) + 1 + 2);
+  char *pointer = name;
+  char type_char;
+
+  if (!name)
+    {
+      DBG_ERR ("html_generate_anchor_name: couldn't malloc\n");
+      return 0;
+    }
+
+  switch (dev_type)
+    {
+    case type_scanner:
+      type_char = 'S';
+      break;
+    case type_stillcam:
+      type_char = 'C';
+      break;
+    case type_vidcam:
+      type_char = 'V';
+      break;
+    case type_meta:
+      type_char = 'M';
+      break;
+    case type_api:
+      type_char = 'A';
+      break;
+    default:
+      type_char = 'Z';
+      break;
+    }
+
+  snprintf (name, strlen (manufacturer_name) + 1 + 2, "%c-%s",
+	    type_char, manufacturer_name);
+
+  while (*pointer)
+    {
+      if (!isalnum (*pointer))
+	*pointer = '-';
+      else
+	*pointer = toupper (*pointer);
+      pointer++;
+    }
+  return name;
+}
+
+
+/* Generate one table per backend of all backends providing models */
+/* of type dev_type */
+static void
+html_backends_split_table (device_type dev_type)
+{
+  backend_entry *be = first_backend;
+  SANE_Bool first = SANE_TRUE;
+
+  printf ("<p><b>Backends</b>: \n");
+  while (be)			/* print link list */
+    {
+      type_entry *type = be->type;
+      SANE_Bool found = SANE_FALSE;
+
+      while (type)
+	{
+	  if (type->type == dev_type)
+	    found = SANE_TRUE;
+	  type = type->next;
+	}
+      if (found)
+	{
+	  if (!first)
+	    printf (", \n");
+	  first = SANE_FALSE;
+	  printf ("<a href=\"#%s\">%s</a>",
+		  html_generate_anchor_name (dev_type, be->name), be->name);
+	}
+      be = be->next;
+    }
+  be = first_backend;
+  if (first)
+    printf ("(none)\n");
+
+  printf ("</p>\n");
+
+
+  while (be)
+    {
+      type_entry *type = be->type;
+
+      while (type)
+	{
+	  if (type->type == dev_type)
+	    {
+	      mfg_entry *mfg = type->mfg;
+	      model_entry *model;
+
+	      printf ("<h3><a name=\"%s\">Backend: %s\n",
+		      html_generate_anchor_name (type->type, be->name),
+		      be->name);
+
+	      if (be->version || be->new)
+		{
+		  printf ("(");
+		  if (be->version)
+		    {
+		      printf ("%s", be->version);
+		      if (be->new)
+			printf (", <font color=" COLOR_NEW ">NEW!</font>");
+		    }
+		  else
+		    printf ("<font color=" COLOR_NEW ">NEW!</font>");
+		  printf (")\n");
+		}
+	      printf ("</a></h3>\n");
+
+	      printf ("<p>\n");
+
+	      if (be->url && be->url->name)
+		{
+		  url_entry *url = be->url;
+		  printf ("<b>Link(s):</b> \n");
+		  while (url)
+		    {
+		      if (url != be->url)
+			printf (", ");
+		      printf ("<a href=\"%s\">%s</a>", url->name, url->name);
+		      url = url->next;
+		    }
+		  printf ("<br>\n");
+		}
+	      if (be->manpage)
+		printf ("<b>Manual page:</b> <a href=\"" MAN_PAGE_LINK
+			"\">%s</a><br>\n", be->manpage, be->manpage);
+
+	      if (be->comment)
+		printf ("<b>Comment:</b> %s<br>\n", be->comment);
+
+
+	      if (type->desc)
+		{
+		  if (type->desc->desc)
+		    {
+		      if (type->desc->url && type->desc->url->name)
+			printf ("<b>Description:</b> "
+				"<a href=\"%s\">%s</a><br>\n",
+				type->desc->url->name, type->desc->desc);
+		      else
+			printf ("<b>Description:</b> %s<br>\n",
+				type->desc->desc);
+		    }
+
+		  if (type->desc->comment)
+		    printf ("<b>Comment:</b> %s<br>\n", type->desc->comment);
+		  printf ("</p>\n");
+		  type = type->next;
+		  continue;
+		}
+	      printf ("</p>\n");
+
+	      if (!mfg)
+		{
+		  type = type->next;
+		  continue;
+		}
+
+	      printf ("<table border=1>\n");
+
+	      printf ("<tr bgcolor=E0E0FF>\n");
+	      printf ("<th align=center>Manufacturer</th>\n");
+	      printf ("<th align=center>Model</th>\n");
+	      printf ("<th align=center>Interface</th>\n");
+	      printf ("<th align=center>USB id</th>\n");
+	      printf ("<th align=center>Status</th>\n");
+	      printf ("<th align=center>Comment</th>\n");
+	      printf ("</tr>\n");
+
+	      mfg = type->mfg;
+	      while (mfg)
+		{
+		  model = mfg->model;
+		  if (model)
+		    {
+		      int num_models = 0;
+
+		      while (model)	/* count models for rowspan */
+			{
+			  model = model->next;
+			  num_models++;
+			}
+		      model = mfg->model;
+		      printf ("<tr>\n");
+		      printf ("<td align=center rowspan=%d>\n", num_models);
+		      if (mfg->url && mfg->url->name)
+			printf ("<a href=\"%s\">%s</a>\n", mfg->url->name,
+				mfg->name);
+		      else
+			printf ("%s\n", mfg->name);
+
+		      while (model)
+			{
+			  enum status_entry status = model->status;
+
+			  if (model != mfg->model)
+			    printf ("<tr>\n");
+
+			  if (model->url && model->url->name)
+			    printf
+			      ("<td align=center><a href=\"%s\">%s</a></td>\n",
+			       model->url->name, model->name);
+			  else
+			    printf ("<td align=center>%s</td>\n",
+				    model->name);
+
+			  if (model->interface)
+			    printf ("<td align=center>%s</td>\n",
+				    model->interface);
+			  else
+			    printf ("<td align=center>?</td>\n");
+
+			  if (model->usb_vendor_id && model->usb_product_id)
+			    printf ("<td align=center>%s/%s</td>\n",
+				    model->usb_vendor_id, model->usb_product_id);
+			  else
+			    printf ("<td align=center>&nbsp;</td>\n");
+
+			  printf ("<td align=center><font color=%s>%s</font></td>\n",
+				  status_color[status], status_name[status]);
+
+			  if (model->comment && model->comment[0] != 0)
+			    printf ("<td>%s</td>\n", model->comment);
+			  else
+			    printf ("<td>&nbsp;</td>\n");
+
+			  model = model->next;
+			  printf ("</tr>\n");
+			}	/* while (model) */
+		    }		/* if (num_models) */
+		  mfg = mfg->next;
+		}		/* while (mfg) */
+	      printf ("</table>\n");
+	    }			/* if (type->type) */
+	  type = type->next;
+	}			/* while (type) */
+      be = be->next;
+    }				/* while (be) */
+  /*  printf ("</table>\n"); */
+}
+
+/* Generate one table per manufacturer constructed of all backends */
+/* providing models of type dev_type */
+static void
+html_mfgs_table (device_type dev_type)
+{
+  mfg_record_entry *mfg_record = 0, *first_mfg_record = 0;
+
+  first_mfg_record = create_mfg_list (dev_type);
+  mfg_record = first_mfg_record;
+
+  printf ("<p><b>Manufacturers</b>: \n");
+  while (mfg_record)
+    {
+      if (mfg_record != first_mfg_record)
+	printf (", \n");
+      printf ("<a href=\"#%s\">%s</a>",
+	      html_generate_anchor_name (type_unknown, mfg_record->name),
+	      mfg_record->name);
+      mfg_record = mfg_record->next;
+    }
+  mfg_record = first_mfg_record;
+  if (!mfg_record)
+    printf ("(none)\n");
+  printf ("</p>\n");
+  while (mfg_record)
+    {
+      model_record_entry *model_record = mfg_record->model_record;
+
+      printf ("<h3><a name=\"%s\">Manufacturer: %s</a></h3>\n",
+	      html_generate_anchor_name (type_unknown, mfg_record->name),
+	      mfg_record->name);
+      printf ("<p>\n");
+      if (mfg_record->url && mfg_record->url->name)
+	{
+	  url_entry *url = mfg_record->url;
+	  printf ("<b>Link(s):</b> \n");
+	  while (url)
+	    {
+	      if (url != mfg_record->url)
+		printf (", ");
+	      printf ("<a href=\"%s\">%s</a>", url->name, url->name);
+	      url = url->next;
+	    }
+	  printf ("<br>\n");
+	}
+      if (mfg_record->comment)
+	printf ("<b>Comment:</b> %s<br>\n", mfg_record->comment);
+      printf ("</p>\n");
+      if (!model_record)
+	{
+	  mfg_record = mfg_record->next;
+	  continue;
+	}
+      printf ("<table border=1>\n");
+      printf ("<tr bgcolor=E0E0FF>\n");
+
+      printf ("<th align=center>Model</th>\n");
+      printf ("<th align=center>Interface</th>\n");
+      printf ("<th align=center>USB id</th>\n");
+      printf ("<th align=center>Status</th>\n");
+      printf ("<th align=center>Comment</th>\n");
+      printf ("<th align=center>Backend</th>\n");
+      printf ("<th align=center>Manpage</th>\n");
+      printf ("</tr>\n");
+
+      while (model_record)
+	{
+	  enum status_entry status = model_record->status;
+
+	  if (model_record->url && model_record->url->name)
+	    printf ("<tr><td align=center><a "
+		    "href=\"%s\">%s</a></td>\n",
+		    model_record->url->name, model_record->name);
+	  else
+	    printf ("<tr><td align=center>%s</td>\n", model_record->name);
+
+	  if (model_record->interface)
+	    printf ("<td align=center>%s</td>\n", model_record->interface);
+	  else
+	    printf ("<td align=center>?</td>\n");
+
+	  if (model_record->usb_vendor_id && model_record->usb_product_id)
+	    printf ("<td align=center>%s/%s</td>\n",
+		    model_record->usb_vendor_id, model_record->usb_product_id);
+	  else
+	    printf ("<td align=center>&nbsp;</td>\n");
+
+	  printf ("<td align=center><font color=%s>%s</font></td>\n",
+		  status_color[status], status_name[status]);
+
+	  if (model_record->comment && model_record->comment[0] != 0)
+	    printf ("<td>%s</td>\n", model_record->comment);
+	  else
+	    printf ("<td>&nbsp;</td>\n");
+
+	  printf ("<td align=center>\n");
+	  if (model_record->be->url && model_record->be->url->name)
+	    printf ("<a href=\"%s\">%s</a>\n",
+		    model_record->be->url->name, model_record->be->name);
+	  else
+	    printf ("%s", model_record->be->name);
+
+	  if (model_record->be->version || model_record->be->new)
+	    {
+	      printf ("<br>(");
+	      if (model_record->be->version)
+		{
+		  printf ("%s", model_record->be->version);
+		  if (model_record->be->new)
+		    printf (", <font color=" COLOR_NEW ">NEW!</font>");
+		}
+	      else
+		printf ("<font color=" COLOR_NEW ">NEW!</font>");
+	      printf (")\n");
+	    }
+
+	  printf ("</td>\n");
+	  if (model_record->be->manpage)
+	    printf ("<td align=center><a href=\""
+		    MAN_PAGE_LINK "\">%s</a></td>\n",
+		    model_record->be->manpage, model_record->be->manpage);
+	  else
+	    printf ("<td align=center>?</td>\n");
+
+	  printf ("</tr>\n");
+	  model_record = model_record->next;
+	}			/* while model_record */
+      printf ("</table>\n");
+      mfg_record = mfg_record->next;
+    }				/* while mfg_record */
+}
+
+/* Print the HTML headers and an introduction */
+static void
+html_print_header (void)
+{
+  printf
+    ("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">\n"
+     "<html> <head>\n"
+     "<meta http-equiv=\"Content-Type\" content=\"text/html; "
+     "charset=iso-8859-1\">\n");
+  printf ("<title>%s</title>\n", title);
+  printf
+    ("</head>\n"
+     "<body bgcolor=FFFFFF>\n"
+     "<div align=center>\n"
+     "<img src=\"http://www.sane-project.org/images/sane.png\" alt=\"SANE\">\n");
+  printf ("<h1>%s</h1>\n", title);
+  printf ("</div>\n" "<hr>\n");
+  printf ("%s\n", intro);
+  printf
+    ("<p>This is only a summary!\n"
+     "Please consult the manpages and the author-supplied webpages\n"
+     "for more detailed (and usually important) information\n"
+     "concerning each backend.</p>\n");
+  printf
+    ("<p>If you have new information or corrections, please file a\n"
+     "<a href=\"http://www.sane-project.org/bugs.html\">bug report</a>\n"
+     "with as many details as possible. Also please tell us if your scanner \n"
+     "isn't mentioned in this list at all.</p>\n"
+     "<p>For an explanation of the tables, see the\n"
+     "<a href=\"#legend\">legend</a>.\n");
+}
+
+/* Print the HTML footers and contact information */
+static void
+html_print_footer (void)
+{
+  time_t current_time = time (0);
+
+  printf
+    ("<hr>\n"
+     "<a href=\"http://www.sane-project.org/\">SANE homepage</a>\n"
+     "<address>\n"
+     "<a href=\"http://www.sane-project.org/imprint.html\"\n"
+     ">Contact</a>\n" "</address>\n" "<font size=-1>\n");
+  printf ("This page was last updated on %s by sane-desc %s from %s\n",
+	  asctime (localtime (&current_time)), SANE_DESC_VERSION, PACKAGE_STRING);
+  printf ("</font>\n");
+  printf ("</body> </html>\n");
+}
+
+
+/* print parts of the legend */
+static void
+html_print_legend_backend (void)
+{
+  printf
+    ("  <dt><b>Backend:</b></dt>\n"
+     "  <dd>Name of the backend,  in parentheses if available:\n"
+     "      Version of backend/driver; newer versions may be\n"
+     "      available from their home sites.<br>"
+     "      <font color=" COLOR_NEW ">NEW!</font> means brand-new to the\n"
+     "      current release of SANE.<br>\n"
+     "      UNMAINTAINED means that nobody maintains that backend. Expect no \n"
+     "      new features or newly supported devices. You are welcome to take over \n"
+     "      maintainership.\n" "  </dd>\n");
+}
+
+static void
+html_print_legend_link (void)
+{
+  printf
+    ("  <dt><b>Link(s):</b></dt>\n"
+     "  <dd>Link(s) to more extensive and\n"
+     "      detailed information, if it exists, or the email address\n"
+     "      of the author or maintainer.\n");
+}
+
+static void
+html_print_legend_manual (void)
+{
+  printf
+    ("  <dt><b>Manual Page:</b></dt>\n"
+     "  <dd>A link to the man-page online, if it exists.</dd>\n");
+}
+
+static void
+html_print_legend_comment (void)
+{
+  printf
+    ("  <dt><b>Comment:</b></dt>\n"
+     "  <dd>More information about the backend or model, e.g. the level of "
+     "      support and possible problems.</dd>\n");
+}
+
+static void
+html_print_legend_manufacturer (void)
+{
+  printf
+    ("  <dt><b>Manufacturer:</b></dt>\n"
+     "  <dd>Manufacturer, vendor or brand name of the device.</dd>\n");
+}
+
+static void
+html_print_legend_model (void)
+{
+  printf
+    ("  <dt><b>Model:</b></dt>\n" "  <dd>Name of the the device.</dd>\n");
+}
+
+static void
+html_print_legend_interface (void)
+{
+  printf
+    ("  <dt><b>Interface:</b></dt>\n"
+     "  <dd>How the device is connected to the computer.</dd>\n");
+}
+
+static void
+html_print_legend_usbid (void)
+{
+  printf
+    ("  <dt><b>USB id:</b></dt>\n"
+     "  <dd>The USB vendor and product ids as printed by sane-find-scanner -q (only applicable for USB devices).</dd>\n");
+}
+
+static void
+html_print_legend_status (void)
+{
+  printf
+    ("  <dt><b>Status</b>:</dt>\n"
+     "  <dd>Indicates how many of the features the device provides \n"
+     "      are supported by SANE.\n"
+     "      <ul><li><font color=" COLOR_UNSUPPORTED ">unsupported</font>"
+     "        means the device is not supported at least by this backend. "
+     "        It may be supported by other backends, however.\n");
+  printf
+    ("      <li><font color=" COLOR_UNTESTED ">untested</font> means the "
+     "        device may be supported but couldn't be tested. Be very "
+     "        careful and report success/failure.\n"
+     "      <li><font color=" COLOR_MINIMAL ">minimal</font> means that the\n"
+     "        device is detected and scans at least in one mode. But the quality \n"
+     "        is bad or important features won't work.\n");
+  printf
+    ("      <li><font color=" COLOR_BASIC ">basic</font> means it works at \n"
+     "        least in the most important modes but quality is not perfect.\n"
+     "      <li><font color=" COLOR_GOOD
+     ">good</font> means the device is usable \n"
+     "        for day-to-day work. Some rather exotic features may be missing.\n"
+     "      <li><font color=" COLOR_COMPLETE
+     ">complete</font> means the backends \n"
+     "        supports everything the device can do.\n" "      </ul></dd>\n");
+}
+
+static void
+html_print_legend_description (void)
+{
+  printf
+    ("  <dt><b>Description</b>:</dt>\n"
+     "  <dd>The scope of application of the backend.\n");
+}
+
+/* Print the HTML page with one table of models per backend */
+static void
+html_print_backends_split (void)
+{
+  if (!title)
+    title = "SANE: Backends (Drivers)";
+  if (!intro)
+    intro = "<p> The following table summarizes the backends/drivers "
+      "distributed with the latest version of sane-backends, and the hardware "
+      "or software they support. </p>";
+
+  html_print_header ();
+
+  html_print_summary ();
+
+  printf ("<h2><a name=\"SCANNERS\">Scanners</a></h2>\n");
+  html_backends_split_table (type_scanner);
+
+  printf ("<h2><a name=\"STILL\">Still Cameras</a></h2>\n");
+  html_backends_split_table (type_stillcam);
+
+  printf ("<h2><a name=\"VIDEO\">Video Cameras</a></h2>\n");
+  html_backends_split_table (type_vidcam);
+
+  printf ("<h2><a name=\"API\">APIs</a></h2>\n");
+  html_backends_split_table (type_api);
+
+  printf ("<h2><a name=\"META\">Meta Backends</a></h2>\n");
+  html_backends_split_table (type_meta);
+
+  printf ("<h3><a name=\"legend\">Legend:</a></h3>\n" "<blockquote><dl>\n");
+
+  html_print_legend_backend ();
+  html_print_legend_link ();
+  html_print_legend_manual ();
+  html_print_legend_comment ();
+  html_print_legend_manufacturer ();
+  html_print_legend_model ();
+  html_print_legend_interface ();
+  html_print_legend_usbid ();
+  html_print_legend_status ();
+  html_print_legend_description ();
+
+  printf ("</dl></blockquote>\n");
+
+  html_print_footer ();
+}
+
+/* Print the HTML page with one table of models per manufacturer */
+static void
+html_print_mfgs (void)
+{
+  if (!title)
+    title = "SANE: Supported Devices";
+
+  if (!intro)
+    intro = "<p> The following table summarizes the devices supported "
+      "by the latest version of sane-backends. </p>";
+
+  html_print_header ();
+
+  html_print_summary ();
+
+  printf ("<h2><a name=\"SCANNERS\">Scanners</a></h2>\n");
+  html_mfgs_table (type_scanner);
+
+  printf ("<h2><a name=\"STILL\">Still Cameras</a></h2>\n");
+  html_mfgs_table (type_stillcam);
+
+  printf ("<h2><a name=\"VIDEO\">Video Cameras</a></h2>\n");
+  html_mfgs_table (type_vidcam);
+
+  printf ("<h2><a name=\"API\">APIs</a></h2>\n");
+  html_backends_split_table (type_api);
+
+  printf ("<h2><a name=\"META\">Meta Backends</a></h2>\n");
+  html_backends_split_table (type_meta);
+
+  printf
+    ("<h3><a name=\"legend\">Legend:</a></h3>\n" "<blockquote>\n" "<dl>\n");
+
+  html_print_legend_model ();
+  html_print_legend_interface ();
+  html_print_legend_usbid ();
+  html_print_legend_status ();
+  html_print_legend_comment ();
+  html_print_legend_backend ();
+  html_print_legend_manual ();
+
+  html_print_legend_manufacturer ();
+  html_print_legend_description ();
+
+  printf ("</dl>\n" "</blockquote>\n");
+
+  html_print_footer ();
+}
+
+
+/* print statistics about supported devices */
+static void
+print_statistics_per_type (device_type dev_type)
+{
+  statistics_type num = {0, 0, 0, 0, 0, 0, 0};
+
+  calculate_statistics_per_type (dev_type, num);
+
+  printf (" Total:       %4d\n",
+	  num[status_minimal] + num[status_basic] + num[status_good] +
+	  num[status_complete] + num[status_untested] + num[status_untested] +
+	  num[status_unsupported]);
+  if (dev_type == type_scanner || dev_type == type_stillcam
+      || dev_type == type_vidcam)
+    {
+      printf (" Supported:   %4d (complete: %d, good: %d, basic: %d, "
+	      "minimal: %d)\n",
+	      num[status_minimal] + num[status_basic] + num[status_good] +
+	      num[status_complete], num[status_complete], num[status_good],
+	      num[status_basic], num[status_minimal]);
+      printf (" Untested:    %4d\n", num[status_untested]);
+      printf (" Unsupported: %4d\n", num[status_unsupported]);
+    }
+}
+
+static void
+print_statistics (void)
+{
+  printf ("Number of known devices:\n");
+  printf ("Scanners:\n");
+  print_statistics_per_type (type_scanner);
+  printf ("Still cameras:\n");
+  print_statistics_per_type (type_stillcam);
+  printf ("Video cameras:\n");
+  print_statistics_per_type (type_vidcam);
+  printf ("Meta backends:\n");
+  print_statistics_per_type (type_meta);
+  printf ("API backends:\n");
+  print_statistics_per_type (type_api);
+}
+
+static usbid_type *
+create_usbid (char *manufacturer, char *model,
+	      char *usb_vendor_id, char *usb_product_id)
+{
+  usbid_type * usbid = calloc (1, sizeof (usbid_type));
+
+  usbid->usb_vendor_id = strdup (usb_vendor_id);
+  usbid->usb_product_id = strdup (usb_product_id);
+  usbid->name = calloc (1, sizeof (manufacturer_model_type));
+  usbid->name->name = calloc (1, strlen (manufacturer) + strlen (model) + 3);
+  sprintf (usbid->name->name, "%s %s", manufacturer, model);
+  usbid->name->next = 0;
+  usbid->next = 0;
+  DBG_DBG ("New USB ids: %s/%s (%s %s)\n", usb_vendor_id, usb_product_id,
+	    manufacturer, model);
+  return usbid;
+}
+
+static scsiid_type *
+create_scsiid (char *manufacturer, char *model,
+	       char *scsi_vendor_id, char *scsi_product_id, SANE_Bool is_processor)
+{
+  scsiid_type * scsiid = calloc (1, sizeof (scsiid_type));
+
+  scsiid->scsi_vendor_id = strdup (scsi_vendor_id);
+  scsiid->scsi_product_id = strdup (scsi_product_id);
+  scsiid->is_processor = is_processor;
+  scsiid->name = calloc (1, sizeof (manufacturer_model_type));
+  scsiid->name->name = calloc (1, strlen (manufacturer) + strlen (model) + 3);
+  sprintf (scsiid->name->name, "%s %s", manufacturer, model);
+  scsiid->name->next = 0;
+  scsiid->next = 0;
+  DBG_DBG ("New SCSI ids: %s/%s (%s %s)\n", scsi_vendor_id, scsi_product_id,
+	    manufacturer, model);
+  return scsiid;
+}
+
+static usbid_type *
+add_usbid (usbid_type *first_usbid, char *manufacturer, char *model,
+	   char *usb_vendor_id, char *usb_product_id)
+{
+  usbid_type *usbid = first_usbid;
+  usbid_type *prev_usbid = 0, *tmp_usbid = 0;
+
+  if (!first_usbid)
+    first_usbid = create_usbid (manufacturer, model, usb_vendor_id, usb_product_id);
+  else
+    {
+      while (usbid)
+	{
+	  if (strcmp (usb_vendor_id, usbid->usb_vendor_id) == 0 &&
+	      strcmp (usb_product_id, usbid->usb_product_id) == 0)
+	    {
+	      manufacturer_model_type *man_mod = usbid->name;
+
+	      while (man_mod->next)
+		man_mod = man_mod->next;
+	      man_mod->next = malloc (sizeof (manufacturer_model_type));
+	      man_mod->next->name = malloc (strlen (manufacturer) + strlen (model) + 3);
+	      sprintf (man_mod->next->name, "%s %s", manufacturer, model);
+	      man_mod->next->next = 0;
+	      DBG_DBG ("Added manufacturer/model %s %s to USB ids %s/%s\n", manufacturer, model,
+			usb_vendor_id, usb_product_id);
+	      break;
+	    }
+	  if (strcmp (usb_vendor_id, usbid->usb_vendor_id) < 0 ||
+	      (strcmp (usb_vendor_id, usbid->usb_vendor_id) == 0 &&
+	       strcmp (usb_product_id, usbid->usb_product_id) < 0))
+	    {
+
+	      tmp_usbid = create_usbid (manufacturer, model, usb_vendor_id, usb_product_id);
+	      tmp_usbid->next = usbid;
+	      if (prev_usbid)
+		prev_usbid->next = tmp_usbid;
+	      else
+		first_usbid = tmp_usbid;
+	      break;
+	    }
+	  prev_usbid = usbid;
+	  usbid = usbid->next;
+	}
+      if (!usbid)
+	{
+	  prev_usbid->next = create_usbid (manufacturer, model, usb_vendor_id, usb_product_id);
+	  usbid = prev_usbid->next;
+	}
+    }
+  return first_usbid;
+}
+
+static scsiid_type *
+add_scsiid (scsiid_type *first_scsiid, char *manufacturer, char *model,
+	    char *scsi_vendor_id, char *scsi_product_id, SANE_Bool is_processor)
+{
+  scsiid_type *scsiid = first_scsiid;
+  scsiid_type *prev_scsiid = 0, *tmp_scsiid = 0;
+
+  if (!first_scsiid)
+    first_scsiid = create_scsiid (manufacturer, model, scsi_vendor_id, scsi_product_id, is_processor);
+  else
+    {
+      while (scsiid)
+	{
+	  if (strcmp (scsi_vendor_id, scsiid->scsi_vendor_id) == 0 &&
+	      strcmp (scsi_product_id, scsiid->scsi_product_id) == 0)
+	    {
+	      manufacturer_model_type *man_mod = scsiid->name;
+
+	      while (man_mod->next)
+		man_mod = man_mod->next;
+	      man_mod->next = malloc (sizeof (manufacturer_model_type));
+	      man_mod->next->name = malloc (strlen (manufacturer) + strlen (model) + 3);
+	      sprintf (man_mod->next->name, "%s %s", manufacturer, model);
+	      man_mod->next->next = 0;
+	      DBG_DBG ("Added manufacturer/model %s %s to SCSI ids %s/%s\n", manufacturer, model,
+			scsi_vendor_id, scsi_product_id);
+	      break;
+	    }
+	  if (strcmp (scsi_vendor_id, scsiid->scsi_vendor_id) < 0 ||
+	      (strcmp (scsi_vendor_id, scsiid->scsi_vendor_id) == 0 &&
+	       strcmp (scsi_product_id, scsiid->scsi_product_id) < 0))
+	    {
+
+	      tmp_scsiid = create_scsiid (manufacturer, model, scsi_vendor_id, scsi_product_id, is_processor);
+	      tmp_scsiid->next = scsiid;
+	      if (prev_scsiid)
+		prev_scsiid->next = tmp_scsiid;
+	      else
+		first_scsiid = tmp_scsiid;
+	      break;
+	    }
+	  prev_scsiid = scsiid;
+	  scsiid = scsiid->next;
+	}
+      if (!scsiid)
+	{
+	  prev_scsiid->next = create_scsiid (manufacturer, model, scsi_vendor_id, scsi_product_id, is_processor);
+	  scsiid = prev_scsiid->next;
+	}
+    }
+  return first_scsiid;
+}
+
+static usbid_type *
+create_usbids_table (void)
+{
+  backend_entry *be;
+  usbid_type *first_usbid = NULL;
+
+  if (!first_backend)
+    return NULL;
+
+  for (be = first_backend; be; be = be->next)
+    {
+      type_entry *type;
+
+      if (!be->type)
+	continue;
+
+      for (type = be->type; type; type = type->next)
+	{
+	  mfg_entry *mfg;
+
+	  if (!type->mfg)
+	      continue;
+
+	  for (mfg = type->mfg; mfg; mfg = mfg->next)
+	    {
+	      model_entry *model;
+
+	      if (!mfg->model)
+		continue;
+
+	      for (model = mfg->model; model; model = model->next)
+		{
+		  if ((model->status == status_unsupported)
+		      || (model->status == status_unknown))
+		    continue;
+
+		  if (model->usb_vendor_id && model->usb_product_id)
+		    {
+		      first_usbid = add_usbid (first_usbid, mfg->name,
+					       model->name,
+					       model->usb_vendor_id,
+					       model->usb_product_id);
+		    }
+		} /* for (model) */
+	    } /* for (mfg) */
+	} /* for (type) */
+    } /* for (be) */
+
+  return first_usbid;
+}
+
+static scsiid_type *
+create_scsiids_table (void)
+{
+  backend_entry *be;
+  scsiid_type *first_scsiid = NULL;
+
+  if (!first_backend)
+    return NULL;
+
+  for (be = first_backend; be; be = be->next)
+    {
+      type_entry *type;
+
+      if (!be->type)
+	continue;
+
+      for (type = be->type; type; type = type->next)
+	{
+	  mfg_entry *mfg;
+
+	  if (!type->mfg)
+	    continue;
+
+	  for (mfg = type->mfg; mfg; mfg = mfg->next)
+	    {
+	      model_entry *model;
+
+	      if (!mfg->model)
+		continue;
+
+	      for (model = mfg->model; model; model = model->next)
+		{
+		  if ((model->status == status_unsupported)
+		      || (model->status == status_unknown))
+		    continue;
+
+		  if (model->scsi_vendor_id && model->scsi_product_id)
+		    {
+		      first_scsiid = add_scsiid (first_scsiid, mfg->name,
+						 model->name,
+						 model->scsi_vendor_id,
+						 model->scsi_product_id,
+						 model->scsi_is_processor);
+		    }
+		} /* for (model) */
+	    } /* for (mfg) */
+	} /* for (type) */
+    } /* for (be) */
+
+  return first_scsiid;
+}
+
+/* print USB usermap file to be used by the hotplug tools */
+static void
+print_usermap_header (void)
+{
+  time_t current_time = time (0);
+
+  printf
+    ("# This file was automatically created based on description files (*.desc)\n"
+    "# by sane-desc %s from %s on %s"
+    "#\n"
+    ,
+    SANE_DESC_VERSION, PACKAGE_STRING, asctime (localtime (&current_time)));
+
+  printf
+     ("# The entries below are used to detect a USB device and change owner\n"
+     "# and permissions on the \"device node\" used by libusb.\n"
+     "#\n"
+     "# The 0x0003 match flag means the device is matched by its vendor and\n"
+     "# product IDs.\n"
+     "#\n"
+     "# Sample entry (replace 0xVVVV and 0xPPPP with vendor ID and product ID\n"
+     "# respectively):\n"
+     "#\n"
+     );
+
+  printf
+    ("# libusbscanner 0x0003 0xVVVV 0xPPPP 0x0000 0x0000 0x00 0x00 0x00 0x00 "
+     "0x00 0x00 0x00000000\n"
+     "# usb module match_flags idVendor idProduct bcdDevice_lo bcdDevice_hi "
+     "bDeviceClass bDeviceSubClass bDeviceProtocol bInterfaceClass "
+     "bInterfaceSubClass bInterfaceProtocol driver_info\n"
+     "#\n"
+     );
+
+  printf
+     ("# If your scanner isn't listed below, you can add it as explained above.\n"
+     "#\n"
+     "# If your scanner is supported by some external backend (brother, epkowa,\n"
+     "# hpaio, etc) please ask the author of the backend to provide proper\n"
+     "# device detection support for your OS\n"
+     "#\n"
+     "# If the scanner is supported by sane-backends, please mail the entry to\n"
+     "# the sane-devel mailing list (sane-devel@lists.alioth.debian.org).\n"
+     "#\n"
+     );
+
+}
+
+static void
+print_usermap (void)
+{
+  usbid_type *usbid = create_usbids_table ();
+
+  print_usermap_header ();
+  while (usbid)
+    {
+      manufacturer_model_type * name = usbid->name;
+
+      printf ("# ");
+      while (name)
+	{
+	  if (name != usbid->name)
+	    printf (" | ");
+	  printf ("%s", name->name);
+	  name = name->next;
+	}
+      printf ("\n");
+      printf ("libusbscanner 0x0003 %s %s ", usbid->usb_vendor_id,
+	      usbid->usb_product_id);
+      printf ("0x0000 0x0000 0x00 0x00 0x00 0x00 0x00 0x00 0x00000000\n");
+      usbid = usbid->next;
+    }
+}
+
+/* print libsane.db file for hotplug-ng */
+static void
+print_db_header (void)
+{
+  time_t current_time = time (0);
+  printf ("# This file was automatically created based on description files (*.desc)\n"
+	  "# by sane-desc %s from %s on %s",
+	  SANE_DESC_VERSION, PACKAGE_STRING, asctime (localtime (&current_time)));
+  printf
+    ("#\n"
+     "# The entries below are used to detect a USB device when it's plugged in\n"
+     "# and then run a script to change the ownership and\n"
+     "# permissions on the \"device node\" used by libusb.\n"
+     "# Sample entry (replace 0xVVVV and 0xPPPP with vendor ID and product ID\n"
+     "# respectively):\n");
+  printf
+    ("#\n"
+     "# 0xVVVV<tab>0xPPPP<tab>%s:%s<tab>%s<tab>[/usr/local/bin/foo.sh]\n"
+     "# Fields:\n"
+     "#   vendor ID\n"
+     "#   product ID\n"
+     "#   ownership (user:group)\n"
+     "#   permissions\n"
+     "#   path of an optional script to run (it can be omitted)\n"
+     "#\n"
+     , DEVOWNER, DEVGROUP, DEVMODE);
+
+  printf
+     ("# If your scanner isn't listed below, you can add it as explained above.\n"
+     "#\n"
+     "# If your scanner is supported by some external backend (brother, epkowa,\n"
+     "# hpaio, etc) please ask the author of the backend to provide proper\n"
+     "# device detection support for your OS\n"
+     "#\n"
+     "# If the scanner is supported by sane-backends, please mail the entry to\n"
+     "# the sane-devel mailing list (sane-devel@lists.alioth.debian.org).\n"
+     "#\n"
+     );
+}
+
+static void
+print_db (void)
+{
+  usbid_type *usbid = create_usbids_table ();
+
+  print_db_header ();
+  while (usbid)
+    {
+      manufacturer_model_type * name = usbid->name;
+
+      printf ("# ");
+      while (name)
+	{
+	  if (name != usbid->name)
+	    printf (" | ");
+	  printf ("%s", name->name);
+	  name = name->next;
+	}
+      printf ("\n");
+      printf ("%s\t%s\t%s:%s\t%s\t\n", usbid->usb_vendor_id,
+	      usbid->usb_product_id, DEVOWNER, DEVGROUP, DEVMODE);
+      usbid = usbid->next;
+    }
+}
+
+/* print libsane.rules for Linux udev */
+static void
+print_udev_header (void)
+{
+  time_t current_time = time (0);
+  printf ("# This file was automatically created based on description files (*.desc)\n"
+	  "# by sane-desc %s from %s on %s",
+	  SANE_DESC_VERSION, PACKAGE_STRING, asctime (localtime (&current_time)));
+
+  printf
+    ("#\n"
+     "# udev rules file for supported USB and SCSI devices\n"
+     "#\n"
+     "# The SCSI device support is very basic and includes only\n"
+     "# scanners that mark themselves as type \"scanner\" or\n"
+     "# SCSI-scanners from HP and other vendors that are entitled \"processor\"\n"
+     "# but are treated accordingly.\n"
+     "#\n");
+  printf
+    ("# To add a USB device, add a rule to the list below between the\n"
+     "# LABEL=\"libsane_usb_rules_begin\" and LABEL=\"libsane_usb_rules_end\" lines.\n"
+     "#\n"
+     "# To run a script when your device is plugged in, add RUN+=\"/path/to/script\"\n"
+     "# to the appropriate rule.\n"
+     "#\n"
+     );
+  printf
+     ("# If your scanner isn't listed below, you can add it as explained above.\n"
+     "#\n"
+     "# If your scanner is supported by some external backend (brother, epkowa,\n"
+     "# hpaio, etc) please ask the author of the backend to provide proper\n"
+     "# device detection support for your OS\n"
+     "#\n"
+     "# If the scanner is supported by sane-backends, please mail the entry to\n"
+     "# the sane-devel mailing list (sane-devel@lists.alioth.debian.org).\n"
+     "#\n"
+     );
+}
+
+static void
+print_udev (void)
+{
+  usbid_type *usbid = create_usbids_table ();
+  scsiid_type *scsiid = create_scsiids_table ();
+  int i;
+
+  print_udev_header ();
+  printf("ACTION!=\"add\", GOTO=\"libsane_rules_end\"\n"
+	 "ENV{DEVTYPE}==\"usb_device\", GOTO=\"libsane_create_usb_dev\"\n"
+	 "SUBSYSTEMS==\"scsi\", GOTO=\"libsane_scsi_rules_begin\"\n"
+	 "SUBSYSTEM==\"usb_device\", GOTO=\"libsane_usb_rules_begin\"\n"
+	 "SUBSYSTEM!=\"usb_device\", GOTO=\"libsane_usb_rules_end\"\n"
+	 "\n");
+
+  printf("# Kernel >= 2.6.22 jumps here\n"
+	 "LABEL=\"libsane_create_usb_dev\"\n"
+	 "\n");
+
+  printf("# For Linux >= 2.6.22 without CONFIG_USB_DEVICE_CLASS=y\n"
+	 "# If the following rule does not exist on your system yet, uncomment it\n"
+	 "# ENV{DEVTYPE}==\"usb_device\", "
+	 "MODE=\"0664\", OWNER=\"root\", GROUP=\"root\"\n"
+	 "\n");
+
+  printf("# Kernel < 2.6.22 jumps here\n"
+	 "LABEL=\"libsane_usb_rules_begin\"\n"
+	 "\n");
+
+  while (usbid)
+    {
+      manufacturer_model_type * name = usbid->name;
+
+      i = 0;
+      printf ("# ");
+      while (name)
+	{
+	  if ((name != usbid->name) && (i > 0))
+	    printf (" | ");
+	  printf ("%s", name->name);
+	  name = name->next;
+
+	  i++;
+
+	  /*
+	   * Limit the number of model names on the same line to 3,
+	   * as udev cannot handle very long lines and prints a warning
+	   * message while loading the rules files.
+	   */
+	  if ((i == 3) && (name != NULL))
+	    {
+	      printf("\n# ");
+	      i = 0;
+	    }
+	}
+      printf ("\n");
+
+      if (mode == output_mode_udevacl)
+	printf ("ATTRS{idVendor}==\"%s\", ATTRS{idProduct}==\"%s\", ENV{libsane_matched}=\"yes\"\n",
+		usbid->usb_vendor_id + 2,  usbid->usb_product_id + 2);
+      else
+	printf ("ATTRS{idVendor}==\"%s\", ATTRS{idProduct}==\"%s\", MODE=\"%s\", GROUP=\"%s\", ENV{libsane_matched}=\"yes\"\n",
+		usbid->usb_vendor_id + 2,  usbid->usb_product_id + 2, DEVMODE, DEVGROUP);
+
+      usbid = usbid->next;
+    }
+
+  printf("\n# The following rule will disable USB autosuspend for the device\n");
+  printf("ENV{libsane_matched}==\"yes\", RUN+=\"/bin/sh -c 'if test -e /sys/$env{DEVPATH}/power/control; then echo on > /sys/$env{DEVPATH}/power/control; elif test -e /sys/$env{DEVPATH}/power/level; then echo on > /sys/$env{DEVPATH}/power/level; fi'\"\n");
+
+  printf ("\nLABEL=\"libsane_usb_rules_end\"\n\n");
+
+  printf ("SUBSYSTEMS!=\"scsi\", GOTO=\"libsane_scsi_rules_end\"\n\n");
+  printf ("LABEL=\"libsane_scsi_rules_begin\"\n");
+  printf ("# Generic: SCSI device type 6 indicates a scanner\n");
+
+  if (mode == output_mode_udevacl)
+    printf ("KERNEL==\"sg[0-9]*\", ATTRS{type}==\"6\", ENV{libsane_matched}=\"yes\"\n");
+  else
+    printf ("KERNEL==\"sg[0-9]*\", ATTRS{type}==\"6\", MODE=\"%s\", GROUP=\"%s\", ENV{libsane_matched}=\"yes\"\n", DEVMODE, DEVGROUP);
+
+
+  printf ("# Some scanners advertise themselves as SCSI device type 3\n");
+
+  printf ("# Wildcard: for some Epson SCSI scanners\n");
+  if (mode == output_mode_udevacl)
+    printf ("KERNEL==\"sg[0-9]*\", ATTRS{type}==\"3\", ATTRS{vendor}==\"EPSON\", ATTRS{model}==\"SCANNER*\", ENV{libsane_matched}=\"yes\"\n");
+  else
+    printf ("KERNEL==\"sg[0-9]*\", ATTRS{type}==\"3\", ATTRS{vendor}==\"EPSON\", ATTRS{model}==\"SCANNER*\", MODE=\"%s\", GROUP=\"%s\", ENV{libsane_matched}=\"yes\"\n",
+	    DEVMODE, DEVGROUP);
+
+  while (scsiid)
+    {
+      manufacturer_model_type * name = scsiid->name;
+
+      if (!scsiid->is_processor)
+	{
+	  scsiid = scsiid->next;
+	  continue;
+	}
+
+      /* Wildcard for Epson scanners: vendor = EPSON, product = SCANNER* */
+      if ((strcmp(scsiid->scsi_vendor_id, "EPSON") == 0)
+	  && (strncmp(scsiid->scsi_product_id, "SCANNER", 7) == 0))
+	{
+	  scsiid = scsiid->next;
+	  continue;
+	}
+
+      i = 0;
+      printf ("# ");
+      while (name)
+        {
+          if ((name != scsiid->name) && (i > 0))
+            printf (" | ");
+          printf ("%s", name->name);
+          name = name->next;
+
+	  i++;
+
+	  /*
+	   * Limit the number of model names on the same line to 3,
+	   * as udev cannot handle very long lines and prints a warning
+	   * message while loading the rules files.
+	   */
+	  if ((i == 3) && (name != NULL))
+	    {
+	      printf("\n# ");
+	      i = 0;
+	    }
+        }
+      printf ("\n");
+
+      if (mode == output_mode_udevacl)
+	printf ("KERNEL==\"sg[0-9]*\", ATTRS{type}==\"3\", ATTRS{vendor}==\"%s\", ATTRS{model}==\"%s\", ENV{libsane_matched}=\"yes\"\n",
+		scsiid->scsi_vendor_id, scsiid->scsi_product_id);
+      else
+	printf ("KERNEL==\"sg[0-9]*\", ATTRS{type}==\"3\", ATTRS{vendor}==\"%s\", ATTRS{model}==\"%s\", MODE=\"%s\", GROUP=\"%s\", ENV{libsane_matched}=\"yes\"\n",
+	      scsiid->scsi_vendor_id, scsiid->scsi_product_id, DEVMODE, DEVGROUP);
+
+      scsiid = scsiid->next;
+    }
+  printf ("LABEL=\"libsane_scsi_rules_end\"\n");
+
+  if (mode == output_mode_udevacl)
+    printf("\nENV{libsane_matched}==\"yes\", RUN+=\"/bin/setfacl -m g:%s:rw $env{DEVNAME}\"\n", DEVGROUP);
+  else
+    printf ("\nENV{libsane_matched}==\"yes\", MODE=\"664\", GROUP=\"scanner\"\n");
+
+  printf ("\nLABEL=\"libsane_rules_end\"\n");
+}
+
+
+/* print libsane.rules for Linux udev */
+static void
+print_udevhwdb_header (void)
+{
+  time_t current_time = time (0);
+  printf ("# This file was automatically created based on description files (*.desc)\n"
+	  "# by sane-desc %s from %s on %s",
+	  SANE_DESC_VERSION, PACKAGE_STRING, asctime (localtime (&current_time)));
+
+  printf
+    ("#\n"
+     "# udev rules file for supported USB and SCSI devices\n"
+     "#\n"
+     "# For the list of supported USB devices see /usr/lib/udev/hwdb.d/20-sane.hwdb\n"
+     "#\n"
+     "# The SCSI device support is very basic and includes only\n"
+     "# scanners that mark themselves as type \"scanner\" or\n"
+     "# SCSI-scanners from HP and other vendors that are entitled \"processor\"\n"
+     "# but are treated accordingly.\n"
+     "#\n");
+  printf
+     ("# If your SCSI scanner isn't listed below, you can add it to a new rules\n"
+     "# file under /etc/udev/rules.d/.\n"
+     "#\n"
+     "# If your scanner is supported by some external backend (brother, epkowa,\n"
+     "# hpaio, etc) please ask the author of the backend to provide proper\n"
+     "# device detection support for your OS\n"
+     "#\n"
+     "# If the scanner is supported by sane-backends, please mail the entry to\n"
+     "# the sane-devel mailing list (sane-devel@lists.alioth.debian.org).\n"
+     "#\n"
+     );
+}
+
+static void
+print_udevhwdb (void)
+{
+  scsiid_type *scsiid = create_scsiids_table ();
+  int i;
+
+  print_udevhwdb_header ();
+  printf("ACTION!=\"add\", GOTO=\"libsane_rules_end\"\n\n");
+
+  printf("# The following rule will disable USB autosuspend for the device\n");
+  printf("ENV{DEVTYPE}==\"usb_device\", ENV{libsane_matched}==\"yes\", TEST==\"power/control\", ATTR{power/control}=\"on\"\n\n");
+
+  printf ("SUBSYSTEMS!=\"scsi\", GOTO=\"libsane_rules_end\"\n");
+  printf ("KERNEL!=\"sg[0-9]*\", GOTO=\"libsane_rules_end\"\n\n");
+
+  printf ("# Generic: SCSI device type 6 indicates a scanner\n");
+  printf ("ATTRS{type}==\"6\", ENV{libsane_matched}=\"yes\"\n\n");
+
+  printf ("# Some scanners advertise themselves as SCSI device type 3\n\n");
+
+  printf ("# Wildcard: for some Epson SCSI scanners\n");
+  printf ("ATTRS{type}==\"3\", ATTRS{vendor}==\"EPSON\", ATTRS{model}==\"SCANNER*\", ENV{libsane_matched}=\"yes\"\n\n");
+
+  while (scsiid)
+    {
+      manufacturer_model_type * name = scsiid->name;
+
+      if (!scsiid->is_processor)
+	{
+	  scsiid = scsiid->next;
+	  continue;
+	}
+
+      /* Wildcard for Epson scanners: vendor = EPSON, product = SCANNER* */
+      if ((strcmp(scsiid->scsi_vendor_id, "EPSON") == 0)
+	  && (strncmp(scsiid->scsi_product_id, "SCANNER", 7) == 0))
+	{
+	  scsiid = scsiid->next;
+	  continue;
+	}
+
+      i = 0;
+      printf ("# ");
+      while (name)
+        {
+          if ((name != scsiid->name) && (i > 0))
+            printf (" | ");
+          printf ("%s", name->name);
+          name = name->next;
+
+	  i++;
+
+	  /*
+	   * Limit the number of model names on the same line to 3,
+	   * as udev cannot handle very long lines and prints a warning
+	   * message while loading the rules files.
+	   */
+	  if ((i == 3) && (name != NULL))
+	    {
+	      printf("\n# ");
+	      i = 0;
+	    }
+        }
+      printf ("\n");
+
+      printf ("ATTRS{type}==\"3\", ATTRS{vendor}==\"%s\", ATTRS{model}==\"%s\", ENV{libsane_matched}=\"yes\"\n\n",
+		scsiid->scsi_vendor_id, scsiid->scsi_product_id);
+
+      scsiid = scsiid->next;
+    }
+
+  printf ("\nLABEL=\"libsane_rules_end\"\n");
+}
+
+/* print /usr/lib/udev/hwdb.d/20-sane.conf for Linux hwdb */
+static void
+print_hwdb_header (void)
+{
+  time_t current_time = time (0);
+  printf ("# This file was automatically created based on description files (*.desc)\n"
+	  "# by sane-desc %s from %s on %s",
+	  SANE_DESC_VERSION, PACKAGE_STRING, asctime (localtime (&current_time)));
+
+  printf
+    ("#\n"
+     "# hwdb file for supported USB devices\n"
+     "#\n");
+  printf
+     ("# If your scanner isn't listed below, you can add it to a new hwdb file\n"
+     "# under /etc/udev/hwdb.d/.\n"
+     "#\n"
+     "# If your scanner is supported by some external backend (brother, epkowa,\n"
+     "# hpaio, etc) please ask the author of the backend to provide proper\n"
+     "# device detection support for your OS\n"
+     "#\n"
+     "# If the scanner is supported by sane-backends, please mail the entry to\n"
+     "# the sane-devel mailing list (sane-devel@lists.alioth.debian.org).\n"
+     "#\n"
+     );
+}
+
+static void
+print_hwdb (void)
+{
+  usbid_type *usbid = create_usbids_table ();
+  char *vendor_id;
+  char *product_id;
+  int i,j;
+
+  print_hwdb_header ();
+
+  while (usbid)
+    {
+      manufacturer_model_type * name = usbid->name;
+
+      i = 0;
+      printf ("# ");
+      while (name)
+	{
+	  if ((name != usbid->name) && (i > 0))
+	    printf (" | ");
+	  printf ("%s", name->name);
+	  name = name->next;
+
+	  i++;
+
+	  /*
+	   * Limit the number of model names on the same line to 3,
+	   * as udev cannot handle very long lines and prints a warning
+	   * message while loading the rules files.
+	   */
+	  if ((i == 3) && (name != NULL))
+	    {
+	      printf("\n# ");
+	      i = 0;
+	    }
+	}
+      printf ("\n");
+
+      vendor_id = strdup(usbid->usb_vendor_id + 2);
+      product_id = strdup(usbid->usb_product_id + 2);
+
+      for(j = 0; j < 4; j++) {
+        vendor_id[j] = toupper(vendor_id[j]);
+        product_id[j] = toupper(vendor_id[j]);
+      }
+
+      printf ("usb:v%sp%s*\n libsane_matched=yes\n\n",
+		vendor_id, product_id);
+
+      free(vendor_id);
+      free(product_id);
+
+      usbid = usbid->next;
+    }
+}
+
+static void
+print_plist (void)
+{
+  usbid_type *usbid = create_usbids_table ();
+
+  printf ("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+  printf ("<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n");
+  printf ("<plist version=\"1.0\">\n");
+  printf ("<dict>\n");
+  printf ("\t<key>device info version</key>\n");
+  printf ("\t<string>2.0</string>\n");
+  printf ("\t<key>usb</key>\n");
+  printf ("\t<dict>\n");
+  printf ("\t\t<key>IOUSBDevice</key>\n");
+  printf ("\t\t<array>\n");
+  while (usbid)
+    {
+      printf ("\t\t\t<dict>\n");
+      printf ("\t\t\t\t<key>device type</key>\n");
+      printf ("\t\t\t\t<string>scanner</string>\n");
+      printf ("\t\t\t\t<key>product</key>\n");
+      printf ("\t\t\t\t<string>%s</string>\n", usbid->usb_product_id);
+      printf ("\t\t\t\t<key>vendor</key>\n");
+      printf ("\t\t\t\t<string>%s</string>\n", usbid->usb_vendor_id);
+      printf ("\t\t\t</dict>\n");
+      usbid = usbid->next;
+    }
+  printf ("\t\t</array>\n");
+  printf ("\t</dict>\n");
+  printf ("</dict>\n");
+  printf ("</plist>\n");
+}
+
+
+static void
+print_hal (int new)
+{
+  int i;
+  SANE_Bool in_match;
+  char *last_vendor;
+  scsiid_type *scsiid = create_scsiids_table ();
+  usbid_type *usbid = create_usbids_table ();
+
+  printf ("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+  printf ("<deviceinfo version=\"0.2\">\n");
+  printf ("  <device>\n");
+  printf ("    <!-- SCSI-SUBSYSTEM -->\n");
+  printf ("    <match key=\"info.category\" string=\"scsi_generic\">\n");
+  printf ("      <!-- Some SCSI Scanners announce themselves \"processor\" -->\n");
+  printf ("      <match key=\"@info.parent:scsi.type\" string=\"processor\">\n");
+
+  last_vendor = "";
+  in_match = SANE_FALSE;
+  while (scsiid)
+    {
+      manufacturer_model_type * name = scsiid->name;
+
+      if (!scsiid->is_processor)
+	{
+	  scsiid = scsiid->next;
+	  continue;
+	}
+
+      if (strcmp(last_vendor, scsiid->scsi_vendor_id) != 0)
+	{
+	  if (in_match)
+	    printf ("        </match>\n");
+
+	  printf ("        <match key=\"@info.parent:scsi.vendor\" string=\"%s\">\n", scsiid->scsi_vendor_id);
+	  last_vendor = scsiid->scsi_vendor_id;
+	  in_match = SANE_TRUE;
+	}
+
+      printf ("          <!-- SCSI Scanner ");
+      while (name)
+	{
+	  if (name != scsiid->name)
+	    printf (" | ");
+	  printf ("\"%s\"", name->name);
+	  name = name->next;
+	}
+      printf (" -->\n");
+      printf ("          <match key=\"@info.parent:scsi.model\" string=\"%s\">\n", scsiid->scsi_product_id);
+      printf ("            <append key=\"info.capabilities\" type=\"strlist\">scanner</append>\n");
+      printf ("          </match>\n");
+
+      scsiid = scsiid->next;
+    }
+
+  if (in_match)
+    printf ("        </match>\n");
+
+  printf ("      </match>\n");
+  printf ("    </match>\n");
+  printf ("    <!-- USB-SUBSYSTEM -->\n");
+
+  if (new)
+    printf ("    <match key=\"info.subsystem\" string=\"usb\">\n");
+  else
+    printf ("    <match key=\"info.bus\" string=\"usb\">\n");
+
+  last_vendor = "";
+  in_match = SANE_FALSE;
+  while (usbid)
+    {
+      manufacturer_model_type * name = usbid->name;
+
+      if (strcmp(last_vendor, usbid->usb_vendor_id) != 0)
+	{
+	  if (in_match)
+	    printf ("      </match>\n");
+
+	  printf ("      <match key=\"usb.vendor_id\" int=\"%s\">\n", usbid->usb_vendor_id);
+	  last_vendor = usbid->usb_vendor_id;
+	  in_match = SANE_TRUE;
+	}
+
+      i = 0;
+      printf ("        <!-- ");
+      while (name)
+	{
+	  if ((name != usbid->name) && (i > 0))
+	    printf (" | ");
+
+	  printf ("%s", name->name);
+	  name = name->next;
+	  i++;
+
+	  if ((i == 3) && (name != NULL))
+	    {
+	      printf("\n             ");
+	      i = 0;
+	    }
+	}
+      printf (" -->\n");
+      printf ("        <match key=\"usb.product_id\" int=\"%s\">\n", usbid->usb_product_id);
+      printf ("          <append key=\"info.capabilities\" type=\"strlist\">scanner</append>\n");
+      printf ("          <merge key=\"scanner.access_method\" type=\"string\">proprietary</merge>\n");
+      printf ("        </match>\n");
+
+      usbid = usbid->next;
+    }
+
+  if (in_match)
+    printf ("      </match>\n");
+
+  printf ("    </match>\n");
+
+  printf ("  </device>\n");
+  printf ("</deviceinfo>\n");
+}
+
+int
+main (int argc, char **argv)
+{
+  program_name = strrchr (argv[0], '/');
+  if (program_name)
+    ++program_name;
+  else
+    program_name = argv[0];
+
+  if (!get_options (argc, argv))
+    return 1;
+  if (!read_files ())
+    return 1;
+  switch (mode)
+    {
+    case output_mode_ascii:
+      ascii_print_backends ();
+      break;
+    case output_mode_xml:
+      xml_print_backends ();
+      break;
+    case output_mode_html_backends_split:
+      html_print_backends_split ();
+      break;
+    case output_mode_html_mfgs:
+      html_print_mfgs ();
+      break;
+    case output_mode_statistics:
+      print_statistics ();
+      break;
+    case output_mode_usermap:
+      print_usermap ();
+      break;
+    case output_mode_db:
+      print_db ();
+      break;
+    case output_mode_udev:
+    case output_mode_udevacl:
+      print_udev ();
+      break;
+    case output_mode_udevhwdb:
+      print_udevhwdb ();
+      break;
+    case output_mode_hwdb:
+      print_hwdb ();
+      break;
+    case output_mode_plist:
+      print_plist ();
+      break;
+    case output_mode_hal:
+      print_hal (0);
+      break;
+    case output_mode_halnew:
+      print_hal (1);
+      break;
+    default:
+      DBG_ERR ("Unknown output mode\n");
+      return 1;
+    }
+
+  return 0;
+}
diff --git a/tools/sane-find-scanner.c b/tools/sane-find-scanner.c
new file mode 100644
index 0000000..dbfd0da
--- /dev/null
+++ b/tools/sane-find-scanner.c
@@ -0,0 +1,2100 @@
+/* sane-find-scanner.c
+
+   Copyright (C) 1997-2013 Oliver Rauch, Henning Meier-Geinitz, and others.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+
+ */
+
+#include "../include/sane/config.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <errno.h>
+
+#if defined (HAVE_DDK_NTDDSCSI_H) || defined (HAVE_NTDDSCSI_H)
+# define WIN32_SCSI
+# include <windows.h>
+# if defined (HAVE_DDK_NTDDSCSI_H)
+#  include <ddk/scsi.h>
+#  include <ddk/ntddscsi.h>
+# elif defined (HAVE_NTDDSCSI_H)
+#  include <ntddscsi.h>
+# endif
+#endif
+
+#include "../include/sane/sanei.h"
+#include "../include/sane/sanei_scsi.h"
+#include "../include/sane/sanei_pa4s2.h"
+#include "../include/sane/sanei_config.h"
+
+#ifdef HAVE_LIBUSB
+#ifdef HAVE_LUSB0_USB_H
+#include <lusb0_usb.h>
+#else
+#include <usb.h>
+#endif
+extern char * check_usb_chip (struct usb_device *dev, int verbosity, SANE_Bool from_file);
+#endif
+
+#ifdef HAVE_LIBUSB_1_0
+#include <libusb.h>
+extern char * check_usb_chip (int verbosity,
+			      struct libusb_device_descriptor desc,
+			      libusb_device_handle *hdl,
+			      struct libusb_config_descriptor *config0);
+#endif
+
+#include "../include/sane/sanei_usb.h"
+
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+static const char *prog_name;
+static int verbose = 1;
+static SANE_Bool force = SANE_FALSE;
+static SANE_Bool device_found = SANE_FALSE;
+static SANE_Bool libusb_device_found = SANE_FALSE;
+static SANE_Bool unknown_found = SANE_FALSE;
+
+#ifdef HAVE_LIBUSB_1_0
+libusb_context *sfs_usb_ctx;
+#endif
+
+typedef struct
+{
+  unsigned char *cmd;
+  size_t size;
+}
+scsiblk;
+
+#define INQUIRY					0x12
+#define set_inquiry_return_size(icb,val)	icb[0x04]=val
+#define IN_periph_devtype_cpu			0x03
+#define IN_periph_devtype_scanner		0x06
+#define get_scsi_inquiry_vendor(in, buf)	strncpy(buf, in + 0x08, 0x08)
+#define get_scsi_inquiry_product(in, buf)	strncpy(buf, in + 0x10, 0x010)
+#define get_scsi_inquiry_version(in, buf)	strncpy(buf, in + 0x20, 0x04)
+#define get_scsi_inquiry_periph_devtype(in)	(in[0] & 0x1f)
+#define get_scsi_inquiry_additional_length(in)	in[0x04]
+#define set_scsi_inquiry_length(out,n)		out[0x04]=n-5
+
+static unsigned char inquiryC[] = {
+  INQUIRY, 0x00, 0x00, 0x00, 0xff, 0x00
+};
+static scsiblk inquiry = {
+  inquiryC, sizeof (inquiryC)
+};
+
+static void
+usage (char *msg)
+{
+  fprintf (stderr, "Usage: %s [-hvqf] [devname ...]\n", prog_name);
+  fprintf (stderr, "\t-h: print this help message\n");
+  fprintf (stderr, "\t-v: be more verbose (can be used multiple times)\n");
+  fprintf (stderr, "\t-q: be quiet (print only devices, no comments)\n");
+  fprintf (stderr, "\t-f: force opening devname as SCSI even if it looks "
+	   "like USB\n");
+  fprintf (stderr, "\t-p: enable scanning for parallel port devices\n");
+#ifdef HAVE_LIBUSB
+  fprintf (stderr, "\t-F file: try to detect chipset from given "
+	   "/proc/bus/usb/devices file\n");
+#endif
+  if (msg)
+    fprintf (stderr, "\t%s\n", msg);
+}
+
+/* if SCSI generic is optional on your OS, and there is a software test
+   which will determine if it is included, add it here. If you are sure
+   that SCSI generic was found, return 1. If SCSI generic is always
+   available in your OS, return 1 */
+
+static int
+check_sg (void)
+{
+#if defined(__linux__)
+  /* Assumption: /proc/devices lines are shorter than 256 characters */
+  char line[256], driver[256] = "";
+  FILE *stream;
+
+  stream = fopen ("/proc/devices", "r");
+  /* Likely reason for failure, no /proc => probably no SG either */
+  if (stream == NULL)
+    return 0;
+
+  while (fgets (line, sizeof (line) - 1, stream))
+    {
+      if (sscanf (line, " %*d %s\n", driver) > 0 && !strcmp (driver, "sg"))
+	break;
+    }
+  fclose (stream);
+
+  if (strcmp (driver, "sg"))
+    {
+      return 0;
+    }
+  else
+    {
+      return 1;
+    }
+#endif
+  return 1;			/* Give up, and assume yes to avoid false negatives */
+}
+
+/* Display a buffer in the log. Display by lines of 16 bytes. */
+static void
+hexdump (const char *comment, unsigned char *buf, const int length)
+{
+  int i;
+  char line[128];
+  char *ptr;
+  char asc_buf[17];
+  char *asc_ptr;
+
+  printf ("  %s\n", comment);
+
+  i = 0;
+  goto start;
+
+  do
+    {
+      if (i < length)
+	{
+	  ptr += sprintf (ptr, " %2.2x", *buf);
+
+	  if (*buf >= 32 && *buf <= 127)
+	    {
+	      asc_ptr += sprintf (asc_ptr, "%c", *buf);
+	    }
+	  else
+	    {
+	      asc_ptr += sprintf (asc_ptr, ".");
+	    }
+	}
+      else
+	{
+	  /* After the length; do nothing. */
+	  ptr += sprintf (ptr, "   ");
+	}
+
+      i++;
+      buf++;
+
+      if ((i % 16) == 0)
+	{
+	  /* It's a new line */
+	  printf ("  %s    %s\n", line, asc_buf);
+
+	start:
+	  ptr = line;
+	  *ptr = '\0';
+	  asc_ptr = asc_buf;
+	  *asc_ptr = '\0';
+
+	  ptr += sprintf (ptr, "  %3.3d:", i);
+	}
+
+    }
+  while (i < ((length + 15) & ~15));
+}
+
+static SANE_Status
+scanner_do_scsi_inquiry (unsigned char *buffer, int sfd)
+{
+  size_t size;
+  SANE_Status status;
+
+  memset (buffer, '\0', 256);	/* clear buffer */
+
+  size = 5;			/* first get only 5 bytes to get size of 
+				   inquiry_return_block */
+  set_inquiry_return_size (inquiry.cmd, size);
+  status = sanei_scsi_cmd (sfd, inquiry.cmd, inquiry.size, buffer, &size);
+
+  if (status != SANE_STATUS_GOOD)
+    return (status);
+
+  size = get_scsi_inquiry_additional_length (buffer) + 5;
+
+  /* then get inquiry with actual size */
+  set_inquiry_return_size (inquiry.cmd, size);
+  status = sanei_scsi_cmd (sfd, inquiry.cmd, inquiry.size, buffer, &size);
+
+  return (status);
+}
+
+static void
+scanner_identify_scsi_scanner (unsigned char *buffer, int sfd,
+			       char *devicename)
+{
+  unsigned char vendor[9];
+  unsigned char product[17];
+  unsigned char version[5];
+  unsigned char *pp;
+  unsigned int devtype;
+  SANE_Status status;
+  static char *devtypes[] = {
+    "disk", "tape", "printer", "processor", "CD-writer",
+    "CD-drive", "scanner", "optical-drive", "jukebox",
+    "communicator"
+  };
+  status = scanner_do_scsi_inquiry (buffer, sfd);
+  if (status != SANE_STATUS_GOOD)
+    {
+      if (verbose > 1)
+	printf ("inquiry for device %s failed (%s)\n",
+		devicename, sane_strstatus (status));
+      return;
+    }
+
+  if (verbose > 2)
+    hexdump ("Inquiry for device:", buffer,
+	     get_scsi_inquiry_additional_length (buffer) + 5);
+
+  devtype = get_scsi_inquiry_periph_devtype (buffer);
+  if (verbose <= 1 && devtype != IN_periph_devtype_scanner
+      /* old HP scanners use the CPU id ... */
+      && devtype != IN_periph_devtype_cpu)
+    return;			/* no, continue searching */
+
+  get_scsi_inquiry_vendor ((char *) buffer, (char *) vendor);
+  get_scsi_inquiry_product ((char *) buffer, (char *) product);
+  get_scsi_inquiry_version ((char *) buffer, (char *) version);
+
+  pp = &vendor[7];
+  vendor[8] = '\0';
+  while (pp >= vendor && (*pp == ' ' || *pp >= 127))
+    *pp-- = '\0';
+
+  pp = &product[15];
+  product[16] = '\0';
+  while (pp >= product && (*pp == ' ' || *pp >= 127))
+    *pp-- = '\0';
+
+  pp = &version[3];
+  version[4] = '\0';
+  while (pp >= version && (*pp == ' ' || *(pp - 1) >= 127))
+    *pp-- = '\0';
+
+  device_found = SANE_TRUE;
+  printf ("found SCSI %s \"%s %s %s\" at %s\n",
+	  devtype < NELEMS (devtypes) ? devtypes[devtype] : "unknown device",
+	  vendor, product, version, devicename);
+  return;
+}
+
+static void
+check_scsi_file (char *file_name)
+{
+  int result;
+  int sfd;
+  unsigned char buffer[16384];
+
+  if (strstr (file_name, "usb")
+      || strstr (file_name, "uscanner") || strstr (file_name, "ugen"))
+    {
+      if (force)
+	{
+	  if (verbose > 1)
+	    printf ("checking %s even though it looks like a USB device...",
+		    file_name);
+	}
+      else
+	{
+	  if (verbose > 1)
+	    printf ("ignored %s (not a SCSI device)\n", file_name);
+	  return;
+	}
+    }
+  else if (verbose > 1)
+    printf ("checking %s...", file_name);
+
+  result = sanei_scsi_open (file_name, &sfd, NULL, NULL);
+
+  if (verbose > 1)
+    {
+      if (result != 0)
+	printf (" failed to open (%s)\n", sane_strstatus (result));
+      else
+	printf (" open ok\n");
+    }
+
+  if (result == SANE_STATUS_GOOD)
+    {
+      scanner_identify_scsi_scanner (buffer, sfd, file_name);
+      sanei_scsi_close (sfd);
+    }
+  return;
+}
+
+static void
+check_usb_file (char *file_name)
+{
+  SANE_Status result;
+  SANE_Word vendor, product;
+  SANE_Int fd;
+
+  if (!strstr (file_name, "usb")
+      && !strstr (file_name, "uscanner") && !strstr (file_name, "ugen"))
+    {
+      if (force)
+	{
+	  if (verbose > 1)
+	    printf ("checking %s even though doesn't look like a "
+		    "USB device...", file_name);
+	}
+      else
+	{
+	  if (verbose > 1)
+	    printf ("ignored %s (not a USB device)\n", file_name);
+	  return;
+	}
+    }
+  else if (verbose > 1)
+    printf ("checking %s...", file_name);
+
+  result = sanei_usb_open (file_name, &fd);
+
+  if (result != SANE_STATUS_GOOD)
+    {
+      if (verbose > 1)
+	printf (" failed to open (%s)\n", sane_strstatus (result));
+    }
+  else
+    {
+      result = sanei_usb_get_vendor_product (fd, &vendor, &product);
+      if (result == SANE_STATUS_GOOD)
+	{
+	  if (verbose > 1)
+	    printf (" open ok, vendor and product ids were identified\n");
+	  printf ("found USB scanner (vendor=0x%04x, "
+		  "product=0x%04x) at %s\n", vendor, product, file_name);
+	}
+      else
+	{
+	  if (verbose > 1)
+	    printf (" open ok, but vendor and product could NOT be "
+		    "identified\n");
+	  printf ("found USB scanner (UNKNOWN vendor and product) "
+		  "at device %s\n", file_name);
+	  unknown_found = SANE_TRUE;
+	}
+      device_found = SANE_TRUE;
+      sanei_usb_close (fd);
+    }
+}
+
+#ifdef HAVE_LIBUSB
+
+static char *
+get_libusb_string_descriptor (struct usb_device *dev, int index)
+{
+  usb_dev_handle *handle;
+  char *buffer, short_buffer[2];
+  struct usb_string_descriptor *sd;
+  int size = 2;
+  int i;
+
+  if (!index)
+    return 0;
+
+  handle = usb_open (dev);
+  if (!handle)
+    return 0;
+
+  sd = (struct usb_string_descriptor *) short_buffer;
+
+  if (usb_control_msg (handle,
+		       USB_ENDPOINT_IN + USB_TYPE_STANDARD + USB_RECIP_DEVICE,
+		       USB_REQ_GET_DESCRIPTOR,
+		       (USB_DT_STRING << 8) + index, 0, short_buffer,
+		       size, 1000) < 0)
+    {
+      usb_close (handle);
+      return 0;
+    }
+
+  if (sd->bLength < 2 
+      || sd->bDescriptorType != USB_DT_STRING)
+    {
+      usb_close (handle);
+      return 0;
+    }
+  
+  size = sd->bLength;
+
+  buffer = calloc (1, size + 1);
+  if (!buffer)
+    return 0;
+
+  sd = (struct usb_string_descriptor *) buffer;
+
+  if (usb_control_msg (handle,
+		       USB_ENDPOINT_IN + USB_TYPE_STANDARD + USB_RECIP_DEVICE,
+		       USB_REQ_GET_DESCRIPTOR,
+		       (USB_DT_STRING << 8) + index, 0, buffer,
+		       size, 1000) < 0)
+    {
+      usb_close (handle);
+      free (buffer);
+      return 0;
+    }
+
+  if (sd->bLength < 2 || sd->bLength > size
+      || sd->bDescriptorType != USB_DT_STRING)
+    {
+      usb_close (handle);
+      free (buffer);
+      return 0;
+    }
+  size = sd->bLength - 2;
+  for (i = 0; i < (size / 2); i++)
+    buffer[i] = buffer[2 + 2 * i];
+  buffer[i] = 0;
+
+  usb_close (handle);
+  return buffer;
+}
+
+static char *
+get_libusb_vendor (struct usb_device *dev)
+{
+  return get_libusb_string_descriptor (dev, dev->descriptor.iManufacturer);
+}
+
+static char *
+get_libusb_product (struct usb_device *dev)
+{
+  return get_libusb_string_descriptor (dev, dev->descriptor.iProduct);
+}
+
+static void
+check_libusb_device (struct usb_device *dev, SANE_Bool from_file)
+{
+  int is_scanner = 0;
+  char *vendor;
+  char *product;
+  int interface_nr;
+
+  if (!dev->config)
+    {
+      if (verbose > 1)
+	printf ("device 0x%04x/0x%04x is not configured\n",
+		dev->descriptor.idVendor, dev->descriptor.idProduct);
+      return;
+    }
+
+  vendor = get_libusb_vendor (dev);
+  product = get_libusb_product (dev);
+
+  if (verbose > 2)
+    {
+      /* print everything we know about the device */
+      char *buf;
+      int config_nr;
+      struct usb_device_descriptor *d = &dev->descriptor;
+
+      printf ("\n");
+      printf ("<device descriptor of 0x%04x/0x%04x at %s:%s",
+	      d->idVendor, d->idProduct, dev->bus->dirname, dev->filename);
+      if (vendor || product)
+	{
+	  printf (" (%s%s%s)", vendor ? vendor : "",
+		  (vendor && product) ? " " : "", product ? product : "");
+	}
+      printf (">\n");
+      printf ("bLength               %d\n", d->bLength);
+      printf ("bDescriptorType       %d\n", d->bDescriptorType);
+      printf ("bcdUSB                %d.%d%d\n", d->bcdUSB >> 8,
+	      (d->bcdUSB >> 4) & 15, d->bcdUSB & 15);
+      printf ("bDeviceClass          %d\n", d->bDeviceClass);
+      printf ("bDeviceSubClass       %d\n", d->bDeviceSubClass);
+      printf ("bDeviceProtocol       %d\n", d->bDeviceProtocol);
+      printf ("bMaxPacketSize0       %d\n", d->bMaxPacketSize0);
+      printf ("idVendor              0x%04X\n", d->idVendor);
+      printf ("idProduct             0x%04X\n", d->idProduct);
+      printf ("bcdDevice             %d.%d%d\n", d->bcdDevice >> 8,
+	      (d->bcdDevice >> 4) & 15, d->bcdDevice & 15);
+      printf ("iManufacturer         %d (%s)\n", d->iManufacturer,
+	      (vendor) ? vendor : "");
+      printf ("iProduct              %d (%s)\n", d->iProduct,
+	      (product) ? product : "");
+
+      buf = get_libusb_string_descriptor (dev, d->iSerialNumber);
+      printf ("iSerialNumber         %d (%s)\n", d->iSerialNumber,
+	      (buf) ? buf : "");
+      if (buf)
+	free (buf);
+      printf ("bNumConfigurations    %d\n", d->bNumConfigurations);
+
+      for (config_nr = 0; config_nr < d->bNumConfigurations; config_nr++)
+	{
+	  struct usb_config_descriptor *c = &dev->config[config_nr];
+	  int interface_nr;
+
+	  printf (" <configuration %d>\n", config_nr);
+	  printf (" bLength              %d\n", c->bLength);
+	  printf (" bDescriptorType      %d\n", c->bDescriptorType);
+	  printf (" wTotalLength         %d\n", c->wTotalLength);
+	  printf (" bNumInterfaces       %d\n", c->bNumInterfaces);
+	  printf (" bConfigurationValue  %d\n", c->bConfigurationValue);
+	  buf = get_libusb_string_descriptor (dev, c->iConfiguration);
+	  printf (" iConfiguration       %d (%s)\n", c->iConfiguration,
+		  (buf) ? buf : "");
+	  if (buf)
+	    free (buf);
+	  printf (" bmAttributes         %d (%s%s)\n", c->bmAttributes,
+		  c->bmAttributes & 64 ? "Self-powered" : "",
+		  c->bmAttributes & 32 ? "Remote Wakeup" : "");
+	  printf (" MaxPower             %d mA\n", c->MaxPower * 2);
+
+	  for (interface_nr = 0; interface_nr < c->bNumInterfaces;
+	       interface_nr++)
+	    {
+	      struct usb_interface *interface = &c->interface[interface_nr];
+	      int alt_setting_nr;
+
+	      printf ("  <interface %d>\n", interface_nr);
+	      for (alt_setting_nr = 0;
+		   alt_setting_nr < interface->num_altsetting;
+		   alt_setting_nr++)
+		{
+		  struct usb_interface_descriptor *i
+		    = &interface->altsetting[alt_setting_nr];
+		  int ep_nr;
+		  printf ("   <altsetting %d>\n", alt_setting_nr);
+		  printf ("   bLength            %d\n", i->bLength);
+		  printf ("   bDescriptorType    %d\n", i->bDescriptorType);
+		  printf ("   bInterfaceNumber   %d\n", i->bInterfaceNumber);
+		  printf ("   bAlternateSetting  %d\n", i->bAlternateSetting);
+		  printf ("   bNumEndpoints      %d\n", i->bNumEndpoints);
+		  printf ("   bInterfaceClass    %d\n", i->bInterfaceClass);
+		  printf ("   bInterfaceSubClass %d\n",
+			  i->bInterfaceSubClass);
+		  printf ("   bInterfaceProtocol %d\n",
+			  i->bInterfaceProtocol);
+		  buf = get_libusb_string_descriptor (dev, i->iInterface);
+		  printf ("   iInterface         %d (%s)\n", i->iInterface,
+			  (buf) ? buf : "");
+		  if (buf)
+		    free (buf);
+
+		  for (ep_nr = 0; ep_nr < i->bNumEndpoints; ep_nr++)
+		    {
+		      struct usb_endpoint_descriptor *e = &i->endpoint[ep_nr];
+		      char *ep_type;
+
+		      switch (e->bmAttributes & USB_ENDPOINT_TYPE_MASK)
+			{
+			case USB_ENDPOINT_TYPE_CONTROL:
+			  ep_type = "control";
+			  break;
+			case USB_ENDPOINT_TYPE_ISOCHRONOUS:
+			  ep_type = "isochronous";
+			  break;
+			case USB_ENDPOINT_TYPE_BULK:
+			  ep_type = "bulk";
+			  break;
+			case USB_ENDPOINT_TYPE_INTERRUPT:
+			  ep_type = "interrupt";
+			  break;
+			default:
+			  ep_type = "unknown";
+			  break;
+			}
+		      printf ("    <endpoint %d>\n", ep_nr);
+		      printf ("    bLength           %d\n", e->bLength);
+		      printf ("    bDescriptorType   %d\n",
+			      e->bDescriptorType);
+		      printf ("    bEndpointAddress  0x%02X (%s 0x%02X)\n",
+			      e->bEndpointAddress,
+			      e->bEndpointAddress & USB_ENDPOINT_DIR_MASK ?
+			      "in" : "out",
+			      e->
+			      bEndpointAddress & USB_ENDPOINT_ADDRESS_MASK);
+		      printf ("    bmAttributes      %d (%s)\n",
+			      e->bmAttributes, ep_type);
+		      printf ("    wMaxPacketSize    %d\n",
+			      e->wMaxPacketSize);
+		      printf ("    bInterval         %d ms\n", e->bInterval);
+		      printf ("    bRefresh          %d\n", e->bRefresh);
+		      printf ("    bSynchAddress     %d\n", e->bSynchAddress);
+		    }
+		}
+	    }
+	}
+
+    }
+
+  /* Some heuristics, which device may be a scanner */
+  if (dev->descriptor.idVendor == 0)	/* hub */
+    --is_scanner;
+  if (dev->descriptor.idProduct == 0)	/* hub */
+    --is_scanner;
+
+  for (interface_nr = 0; interface_nr < dev->config[0].bNumInterfaces && is_scanner <= 0; interface_nr++)
+    {
+      switch (dev->descriptor.bDeviceClass)
+	{
+	case USB_CLASS_VENDOR_SPEC:
+	  ++is_scanner;
+	  break;
+	case USB_CLASS_PER_INTERFACE:
+	  if (dev->config[0].interface[interface_nr].num_altsetting == 0 || 
+	      !dev->config[0].interface[interface_nr].altsetting)
+	    break;
+	  switch (dev->config[0].interface[interface_nr].altsetting[0].bInterfaceClass)
+	    {
+	    case USB_CLASS_VENDOR_SPEC:
+	    case USB_CLASS_PER_INTERFACE:
+	    case 16:                /* data? */
+	      ++is_scanner;
+	      break;
+	    }
+	  break;
+	}
+    }
+
+  if (is_scanner > 0)
+    {
+      char * chipset = check_usb_chip (dev, verbose, from_file);
+
+      printf ("found USB scanner (vendor=0x%04x", dev->descriptor.idVendor);
+      if (vendor)
+	printf (" [%s]", vendor);
+      printf (", product=0x%04x", dev->descriptor.idProduct);
+      if (product)
+	printf (" [%s]", product);
+      if (chipset)
+	printf (", chip=%s", chipset);
+      if (from_file)
+	printf (")\n");
+      else
+	printf (") at libusb:%s:%s\n", dev->bus->dirname, dev->filename);
+
+      libusb_device_found = SANE_TRUE;
+      device_found = SANE_TRUE;
+    }
+
+  if (vendor)
+    free (vendor);
+
+  if (product)
+    free (product);
+}
+#endif /* HAVE_LIBUSB */
+
+
+#ifdef HAVE_LIBUSB_1_0
+static char *
+sfs_libusb_strerror (int errcode)
+{
+  /* Error codes & descriptions from the libusb-1.0 documentation */
+
+  switch (errcode)
+    {
+      case LIBUSB_SUCCESS:
+	return "Success (no error)";
+
+      case LIBUSB_ERROR_IO:
+	return "Input/output error";
+
+      case LIBUSB_ERROR_INVALID_PARAM:
+	return "Invalid parameter";
+
+      case LIBUSB_ERROR_ACCESS:
+	return "Access denied (insufficient permissions)";
+
+      case LIBUSB_ERROR_NO_DEVICE:
+	return "No such device (it may have been disconnected)";
+
+      case LIBUSB_ERROR_NOT_FOUND:
+	return "Entity not found";
+
+      case LIBUSB_ERROR_BUSY:
+	return "Resource busy";
+
+      case LIBUSB_ERROR_TIMEOUT:
+	return "Operation timed out";
+
+      case LIBUSB_ERROR_OVERFLOW:
+	return "Overflow";
+
+      case LIBUSB_ERROR_PIPE:
+	return "Pipe error";
+
+      case LIBUSB_ERROR_INTERRUPTED:
+	return "System call interrupted (perhaps due to signal)";
+
+      case LIBUSB_ERROR_NO_MEM:
+	return "Insufficient memory";
+
+      case LIBUSB_ERROR_NOT_SUPPORTED:
+	return "Operation not supported or unimplemented on this platform";
+
+      case LIBUSB_ERROR_OTHER:
+	return "Other error";
+
+      default:
+	return "Unknown libusb-1.0 error code";
+    }
+
+  return "Unknown libusb-1.0 error code";
+}
+
+static char *
+get_libusb_string_descriptor (libusb_device_handle *hdl, int index)
+{
+  unsigned char *buffer, short_buffer[2];
+  int size;
+  int ret;
+  int i;
+
+  if (!index)
+    return NULL;
+
+  ret = libusb_get_descriptor (hdl, LIBUSB_DT_STRING, index,
+			       short_buffer, sizeof (short_buffer));
+  if (ret < 0)
+    {
+      printf ("could not fetch string descriptor: %s\n",
+	      sfs_libusb_strerror (ret));
+      return NULL;
+    }
+
+  if ((short_buffer[0] < 2) /* descriptor length */
+      || (short_buffer[1] != LIBUSB_DT_STRING)) /* descriptor type */
+    return NULL;
+  
+  size = short_buffer[0];
+
+  buffer = calloc (1, size + 1);
+  if (!buffer)
+    return NULL;
+
+  ret = libusb_get_descriptor (hdl, LIBUSB_DT_STRING, index,
+			       buffer, size);
+  if (ret < 0)
+    {
+      printf ("could not fetch string descriptor (again): %s\n",
+	      sfs_libusb_strerror (ret));
+      free (buffer);
+      return NULL;
+    }
+
+  if ((buffer[0] < 2) || (buffer[0] > size) /* descriptor length */
+      || (buffer[1] != LIBUSB_DT_STRING)) /* descriptor type */
+    {
+      free (buffer);
+      return NULL;
+    }
+
+  size = buffer[0] - 2;
+  for (i = 0; i < (size / 2); i++)
+    buffer[i] = buffer[2 + 2 * i];
+  buffer[i] = '\0';
+
+  return (char *) buffer;
+}
+
+static void
+check_libusb_device (libusb_device *dev, SANE_Bool from_file)
+{
+  libusb_device_handle *hdl;
+  struct libusb_device_descriptor desc;
+  struct libusb_config_descriptor *config0;
+
+  int is_scanner = 0;
+  char *vendor;
+  char *product;
+  unsigned short vid, pid;
+  unsigned char busno, address;
+  int config;
+  int intf;
+  int ret;
+
+  busno = libusb_get_bus_number (dev);
+  address = libusb_get_device_address (dev);
+
+  ret = libusb_get_device_descriptor (dev, &desc);
+  if (ret < 0)
+    {
+      printf ("could not get device descriptor for device at %03d:%03d: %s\n",
+	      busno, address, sfs_libusb_strerror (ret));
+      return;
+    }
+
+  vid = desc.idVendor;
+  pid = desc.idProduct;
+
+  ret = libusb_open (dev, &hdl);
+  if (ret < 0)
+    {
+      printf ("could not open USB device 0x%04x/0x%04x at %03d:%03d: %s\n",
+	      vid, pid, busno, address, sfs_libusb_strerror (ret));
+      return;
+    }
+
+  ret = libusb_get_configuration (hdl, &config);
+  if (ret < 0)
+    {
+      printf ("could not get configuration for device 0x%04x/0x%04x at %03d:%03d: %s\n",
+	      vid, pid, busno, address, sfs_libusb_strerror (ret));
+      libusb_close (hdl);
+      return;
+    }
+
+  if (config == 0)
+    {
+      if (verbose > 1)
+	printf ("device 0x%04x/0x%04x at %03d:%03d is not configured\n",
+		vid, pid, busno, address);
+      libusb_close (hdl);
+      return;
+    }
+
+  vendor = get_libusb_string_descriptor (hdl, desc.iManufacturer);
+  product = get_libusb_string_descriptor (hdl, desc.iProduct);
+
+  if (verbose > 2)
+    {
+      /* print everything we know about the device */
+      char *buf;
+      int config_nr;
+
+      printf ("\n");
+      printf ("<device descriptor of 0x%04x/0x%04x at %03d:%03d",
+	      vid, pid, busno, address);
+      if (vendor || product)
+	{
+	  printf (" (%s%s%s)", (vendor) ? vendor : "",
+		  (vendor && product) ? " " : "", (product) ? product : "");
+	}
+      printf (">\n");
+      printf ("bLength               %d\n", desc.bLength);
+      printf ("bDescriptorType       %d\n", desc.bDescriptorType);
+      printf ("bcdUSB                %d.%d%d\n", desc.bcdUSB >> 8,
+	      (desc.bcdUSB >> 4) & 15, desc.bcdUSB & 15);
+      printf ("bDeviceClass          %d\n", desc.bDeviceClass);
+      printf ("bDeviceSubClass       %d\n", desc.bDeviceSubClass);
+      printf ("bDeviceProtocol       %d\n", desc.bDeviceProtocol);
+      printf ("bMaxPacketSize0       %d\n", desc.bMaxPacketSize0);
+      printf ("idVendor              0x%04X\n", desc.idVendor);
+      printf ("idProduct             0x%04X\n", desc.idProduct);
+      printf ("bcdDevice             %d.%d%d\n", desc.bcdDevice >> 8,
+	      (desc.bcdDevice >> 4) & 15, desc.bcdDevice & 15);
+      printf ("iManufacturer         %d (%s)\n", desc.iManufacturer,
+	      (vendor) ? vendor : "");
+      printf ("iProduct              %d (%s)\n", desc.iProduct,
+	      (product) ? product : "");
+      buf = get_libusb_string_descriptor (hdl, desc.iSerialNumber);
+      printf ("iSerialNumber         %d (%s)\n", desc.iSerialNumber,
+	      (buf) ? buf : "");
+      if (buf)
+	free (buf);
+      printf ("bNumConfigurations    %d\n", desc.bNumConfigurations);
+
+      for (config_nr = 0; config_nr < desc.bNumConfigurations; config_nr++)
+	{
+	  struct libusb_config_descriptor *c;
+
+	  ret = libusb_get_config_descriptor (dev, config_nr, &c);
+	  if (ret < 0)
+	    {
+	      printf ("could not get configuration descriptor %d: %s\n",
+		      config_nr, sfs_libusb_strerror (ret));
+	      continue;
+	    }
+
+	  printf (" <configuration %d>\n", config_nr);
+	  printf (" bLength              %d\n", c->bLength);
+	  printf (" bDescriptorType      %d\n", c->bDescriptorType);
+	  printf (" wTotalLength         %d\n", c->wTotalLength);
+	  printf (" bNumInterfaces       %d\n", c->bNumInterfaces);
+	  printf (" bConfigurationValue  %d\n", c->bConfigurationValue);
+
+	  buf = get_libusb_string_descriptor (hdl, c->iConfiguration);
+	  printf (" iConfiguration       %d (%s)\n", c->iConfiguration,
+		  (buf) ? buf : "");
+	  free (buf);
+		  
+	  printf (" bmAttributes         %d (%s%s)\n", c->bmAttributes,
+		  c->bmAttributes & 64 ? "Self-powered" : "",
+		  c->bmAttributes & 32 ? "Remote Wakeup" : "");
+	  printf (" MaxPower             %d mA\n", c->MaxPower * 2);
+
+	  for (intf = 0; intf < c->bNumInterfaces; intf++)
+	    {
+	      const struct libusb_interface *interface;
+	      int alt_setting_nr;
+
+	      interface = &c->interface[intf];
+
+	      printf ("  <interface %d>\n", intf);
+	      for (alt_setting_nr = 0;
+		   alt_setting_nr < interface->num_altsetting;
+		   alt_setting_nr++)
+		{
+		  const struct libusb_interface_descriptor *i;
+		  int ep_nr;
+
+		  i = &interface->altsetting[alt_setting_nr];
+
+		  printf ("   <altsetting %d>\n", alt_setting_nr);
+		  printf ("   bLength            %d\n", i->bLength);
+		  printf ("   bDescriptorType    %d\n", i->bDescriptorType);
+		  printf ("   bInterfaceNumber   %d\n", i->bInterfaceNumber);
+		  printf ("   bAlternateSetting  %d\n", i->bAlternateSetting);
+		  printf ("   bNumEndpoints      %d\n", i->bNumEndpoints);
+		  printf ("   bInterfaceClass    %d\n", i->bInterfaceClass);
+		  printf ("   bInterfaceSubClass %d\n",
+			  i->bInterfaceSubClass);
+		  printf ("   bInterfaceProtocol %d\n",
+			  i->bInterfaceProtocol);
+
+		  buf = NULL;
+		  buf = get_libusb_string_descriptor (hdl, i->iInterface);
+		  printf ("   iInterface         %d (%s)\n", i->iInterface,
+			  (buf) ? buf : "");
+		  free (buf);
+		  for (ep_nr = 0; ep_nr < i->bNumEndpoints; ep_nr++)
+		    {
+		      const struct libusb_endpoint_descriptor *e;
+		      char *ep_type;
+
+		      e = &i->endpoint[ep_nr];
+
+		      switch (e->bmAttributes & LIBUSB_TRANSFER_TYPE_MASK)
+			{
+			  case LIBUSB_TRANSFER_TYPE_CONTROL:
+			    ep_type = "control";
+			    break;
+			  case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+			    ep_type = "isochronous";
+			    break;
+			  case LIBUSB_TRANSFER_TYPE_BULK:
+			    ep_type = "bulk";
+			    break;
+			  case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+			    ep_type = "interrupt";
+			    break;
+			  default:
+			    ep_type = "unknown";
+			    break;
+			}
+		      printf ("    <endpoint %d>\n", ep_nr);
+		      printf ("    bLength           %d\n", e->bLength);
+		      printf ("    bDescriptorType   %d\n",
+			      e->bDescriptorType);
+		      printf ("    bEndpointAddress  0x%02X (%s 0x%02X)\n",
+			      e->bEndpointAddress,
+			      e->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK ?
+			      "in" : "out",
+			      e->
+			      bEndpointAddress & USB_ENDPOINT_ADDRESS_MASK);
+		      printf ("    bmAttributes      %d (%s)\n",
+			      e->bmAttributes, ep_type);
+		      printf ("    wMaxPacketSize    %d\n",
+			      e->wMaxPacketSize);
+		      printf ("    bInterval         %d ms\n", e->bInterval);
+		      printf ("    bRefresh          %d\n", e->bRefresh);
+		      printf ("    bSynchAddress     %d\n", e->bSynchAddress);
+		    }
+		}
+	    }
+	}
+    }
+
+
+  /* Some heuristics, which device may be a scanner */
+  if (desc.idVendor == 0)	/* hub */
+    --is_scanner;
+  if (desc.idProduct == 0)	/* hub */
+    --is_scanner;
+
+  ret = libusb_get_config_descriptor (dev, 0, &config0);
+  if (ret < 0)
+    {
+      printf ("could not get config[0] descriptor: %s\n",
+	      sfs_libusb_strerror (ret));
+
+      goto out_free;
+    }
+
+  for (intf = 0; (intf < config0->bNumInterfaces) && (is_scanner <= 0); intf++)
+    {
+      switch (desc.bDeviceClass)
+	{
+	  case USB_CLASS_VENDOR_SPEC:
+	    ++is_scanner;
+	    break;
+	  case USB_CLASS_PER_INTERFACE:
+	    if ((config0->interface[intf].num_altsetting == 0)
+		|| !config0->interface[intf].altsetting)
+	      break;
+	    switch (config0->interface[intf].altsetting[0].bInterfaceClass)
+	      {
+	        case USB_CLASS_VENDOR_SPEC:
+	        case USB_CLASS_PER_INTERFACE:
+	        case 16:                /* data? */
+		  ++is_scanner;
+		  break;
+	      }
+	    break;
+	}
+    }
+
+  if (is_scanner > 0)
+    {
+      char *chipset = NULL;
+      
+      if(!from_file)
+        chipset = check_usb_chip (verbose, desc, hdl, config0);
+
+      printf ("found USB scanner (vendor=0x%04x", vid);
+      if (vendor)
+	printf (" [%s]", vendor);
+      printf (", product=0x%04x", pid);
+      if (product)
+	printf (" [%s]", product);
+      if (chipset)
+	printf (", chip=%s", chipset);
+      if (from_file)
+	printf (")\n");
+      else
+	printf (") at libusb:%03d:%03d\n", busno, address);
+
+      libusb_device_found = SANE_TRUE;
+      device_found = SANE_TRUE;
+    }
+  
+  libusb_free_config_descriptor (config0);
+
+ out_free:
+  libusb_close (hdl);
+  if (vendor)
+    free (vendor);
+
+  if (product)
+    free (product);
+}
+#endif /* HAVE_LIBUSB_1_0 */
+
+
+static DIR *
+scan_directory (char *dir_name)
+{
+  struct stat stat_buf;
+  DIR *dir;
+
+  if (verbose > 2)
+    printf ("scanning directory %s\n", dir_name);
+
+  if (stat (dir_name, &stat_buf) < 0)
+    {
+      if (verbose > 1)
+	printf ("cannot stat `%s' (%s)\n", dir_name, strerror (errno));
+      return 0;
+    }
+  if (!S_ISDIR (stat_buf.st_mode))
+    {
+      if (verbose > 1)
+	printf ("`%s' is not a directory\n", dir_name);
+      return 0;
+    }
+  if ((dir = opendir (dir_name)) == 0)
+    {
+      if (verbose > 1)
+	printf ("cannot read directory `%s' (%s)\n", dir_name,
+		strerror (errno));
+      return 0;
+    }
+  return dir;
+}
+
+static char *
+get_next_file (char *dir_name, DIR * dir)
+{
+  struct dirent *dir_entry;
+  static char file_name[PATH_MAX];
+
+  do
+    {
+      dir_entry = readdir (dir);
+      if (!dir_entry)
+	return 0;
+    }
+  while (strcmp (dir_entry->d_name, ".") == 0
+	 || strcmp (dir_entry->d_name, "..") == 0);
+
+  if (strlen (dir_name) + strlen (dir_entry->d_name) + 1 > PATH_MAX)
+    {
+      if (verbose > 1)
+	printf ("filename too long\n");
+      return 0;
+    }
+  sprintf (file_name, "%s%s", dir_name, dir_entry->d_name);
+  return file_name;
+}
+
+#if defined(WIN32_SCSI)
+/* Return a list of potential scanners. There's a lot of hardcoded values here that might break on a system with lots of scsi devices. */
+static char **build_scsi_dev_list(void)
+{
+	char **dev_list;
+	int dev_list_index;
+	int hca;
+	HANDLE fd;
+	char scsi_hca_name[20];
+	char buffer[4096];
+	DWORD BytesReturned;
+	BOOL ret;
+	size_t dev_list_size;
+	PSCSI_ADAPTER_BUS_INFO adapter;
+	PSCSI_INQUIRY_DATA inquiry;
+	int i;
+
+	/* Allocate room for about 100 scanners. That should be enough. */
+	dev_list_size = 100;
+	dev_list_index = 0;
+	dev_list = calloc(1, dev_list_size * sizeof(char *));
+
+	hca = 0;
+
+	for(hca = 0; ; hca++) {
+
+		/* Open the adapter */
+		snprintf(scsi_hca_name, 20, "\\\\.\\Scsi%d:", hca);
+		fd = CreateFile(scsi_hca_name, GENERIC_READ | GENERIC_WRITE,
+						FILE_SHARE_READ | FILE_SHARE_WRITE,
+						NULL, OPEN_EXISTING,
+						FILE_FLAG_RANDOM_ACCESS, NULL );
+
+		if (fd == INVALID_HANDLE_VALUE) {
+			/* Assume there is no more adapter. This is wrong in the case
+			 * of hot-plug stuff, but I have yet to see it on a user
+			 * machine. */
+			break;
+		}
+
+		/* Get the inquiry info for the devices on that hca. */
+        ret = DeviceIoControl(fd,
+							  IOCTL_SCSI_GET_INQUIRY_DATA,
+							  NULL,
+							  0,
+							  buffer,
+							  sizeof(buffer),
+							  &BytesReturned,
+							  FALSE);
+
+        if(ret == 0)
+			{
+				CloseHandle(fd);
+				continue;
+			}
+
+		adapter = (PSCSI_ADAPTER_BUS_INFO)buffer;
+
+		for(i = 0; i < adapter->NumberOfBuses; i++) {	
+
+			if (adapter->BusData[i].InquiryDataOffset == 0) {
+				/* No device here */
+				continue;
+			}
+
+			inquiry = (PSCSI_INQUIRY_DATA) (buffer + 
+											adapter->BusData[i].InquiryDataOffset);
+			while(1) {
+				/* Check if it is a scanner or a processor
+				 * device. Ignore the other
+				 * device types. */
+				if (inquiry->InquiryDataLength >= 5 &&
+					((inquiry->InquiryData[0] & 0x1f) == 3 ||
+					 (inquiry->InquiryData[0] & 0x1f) == 6)) {
+					char device_name[20];
+					sprintf(device_name, "h%db%dt%dl%d", hca, inquiry->PathId, inquiry->TargetId, inquiry->Lun);
+					dev_list[dev_list_index] = strdup(device_name);
+					dev_list_index++;
+				}
+			
+				if (inquiry->NextInquiryDataOffset == 0) {
+					/* No device here */
+					break;
+				} else {
+					inquiry =  (PSCSI_INQUIRY_DATA) (buffer +
+													 inquiry->NextInquiryDataOffset);
+				}
+			}
+	    }
+
+		CloseHandle(fd);
+
+	}
+
+	return dev_list;
+
+}
+#endif
+
+#if defined (HAVE_IOKIT_CDB_IOSCSILIB_H) || \
+    defined (HAVE_IOKIT_SCSI_SCSICOMMANDOPERATIONCODES_H) || \
+    defined (HAVE_IOKIT_SCSI_COMMANDS_SCSICOMMANDOPERATIONCODES_H)
+char **scsi_dev_list;
+int scsi_dev_list_index;
+
+static SANE_Status AddToSCSIDeviceList (const char *dev) {
+  if (scsi_dev_list_index < 99) {
+    scsi_dev_list [scsi_dev_list_index] = strdup (dev);
+    scsi_dev_list_index++;
+    return SANE_STATUS_GOOD;
+  }
+  else
+    return SANE_STATUS_NO_MEM;
+}
+
+static char **build_scsi_dev_list(void)
+{
+  scsi_dev_list_index = 0;
+  scsi_dev_list = malloc (100 * sizeof(char *));
+  sanei_scsi_find_devices (NULL, NULL, NULL, -1, -1, -1, -1,
+			   AddToSCSIDeviceList);
+  scsi_dev_list [scsi_dev_list_index] = NULL;
+  return scsi_dev_list;
+}
+#endif
+
+static int
+check_mustek_pp_device (void)
+{
+  const char **devices;
+  int ctr = 0, found = 0, scsi = 0;
+
+  if (verbose > 1)
+    printf ("searching for Mustek parallel port scanners:\n");
+
+  devices = sanei_pa4s2_devices ();
+
+  while (devices[ctr] != NULL) {
+    int fd;
+    SANE_Status result;
+
+    /* ordinary parallel port scanner type */
+    if (verbose > 1)
+      printf ("checking %s...", devices[ctr]);
+
+    result = sanei_pa4s2_open (devices[ctr], &fd);
+    
+    if (verbose > 1)
+      {
+        if (result != 0)
+  	  printf (" failed to open (%s)\n", sane_strstatus (result));
+        else
+	  printf (" open ok\n");
+      }
+
+    if (result == 0) {
+      printf ("found possible Mustek parallel port scanner at \"%s\"\n",
+              devices[ctr]);
+      found++;
+      sanei_pa4s2_close(fd);
+    }
+    
+    /* trying scsi over pp devices */
+    if (verbose > 1)
+      printf ("checking %s (SCSI emulation)...", devices[ctr]);
+
+    result = sanei_pa4s2_scsi_pp_open (devices[ctr], &fd);
+    
+    if (verbose > 1)
+      {
+        if (result != 0)
+  	  printf (" failed to open (%s)\n", sane_strstatus (result));
+        else
+	  printf (" open ok\n");
+      }
+
+    if (result == 0) {
+      printf ("found possible Mustek SCSI over PP scanner at \"%s\"\n",
+              devices[ctr]);
+      scsi++;
+      sanei_pa4s2_close(fd);
+    }
+
+    ctr++;
+  }
+
+  free(devices);
+
+  if (found > 0 && verbose > 0)
+    printf("\n  # Your Mustek parallel port scanner was detected.  It may or\n"
+           "  # may not be supported by SANE.  Please read the sane-mustek_pp\n"
+	   "  # man-page for setup instructions.\n");
+
+  if (scsi > 0 && verbose > 0)
+    printf("\n  # Your Mustek parallel port scanner was detected.  It may or\n"
+           "  # may not be supported by SANE.  Please read the sane-mustek_pp\n"
+	   "  # man-page for setup instructions.\n");
+
+  return (found > 0 || scsi > 0);
+}
+
+#ifdef HAVE_LIBUSB
+static SANE_Bool
+parse_num (char* search, const char* line, int base, long int * number)
+{
+  char* start_number;
+
+  start_number = strstr (line, search);
+  if (start_number == NULL)
+    return SANE_FALSE;
+  start_number += strlen (search);
+ 
+  *number = strtol (start_number, NULL, base);
+  if (verbose > 2)
+    printf ("Found %s%ld\n", search, *number);
+  return SANE_TRUE;
+}
+
+static SANE_Bool
+parse_bcd (char* search, const char* line, long int * number)
+{
+  char* start_number;
+  char* end_number;
+  int first_part;
+  int second_part;
+
+  start_number = strstr (line, search);
+  if (start_number == NULL)
+    return SANE_FALSE;
+  start_number += strlen (search);
+ 
+  first_part = strtol (start_number, &end_number, 10);
+  start_number = end_number + 1; /* skip colon */
+  second_part = strtol (start_number, NULL, 10);
+  *number = ((first_part / 10) << 12) + ((first_part % 10) << 8) 
+    + ((second_part / 10) << 4) + (second_part % 10);
+  if (verbose > 2)
+    printf ("Found %s%ld\n", search, *number);
+  return SANE_TRUE;
+}
+
+static void
+parse_file (char *filename)
+{
+  FILE * parsefile;
+  char line [PATH_MAX], *token;
+  const char * p;
+  struct usb_device *dev = 0;
+  long int number = 0;
+  int current_config = 1;
+  int current_if = -1;
+  int current_as = -1;
+  int current_ep = -1;
+
+  if (verbose > 1)
+    printf ("trying to open %s\n", filename);
+  parsefile = fopen (filename, "r");
+
+  if (parsefile == NULL)
+    {
+      if (verbose > 0)
+	printf ("opening %s failed: %s\n", filename, strerror (errno));
+      return;
+    }
+
+  while (sanei_config_read (line, PATH_MAX, parsefile))
+    {
+      if (verbose > 2)
+	printf ("parsing line: `%s'\n", line);
+      p = sanei_config_get_string (line, &token);
+      if (!token || !p || token[0] == '\0')
+	continue;
+      if (token[1] != ':')
+	{
+	  if (verbose > 2)
+	    printf ("missing `:'?\n");
+	  continue;
+	}
+      switch (token[0])
+	{
+	case 'T':
+	  if (dev)
+	    check_libusb_device (dev, SANE_TRUE);
+	  dev = calloc (1, sizeof (struct usb_device));
+	  dev->bus = calloc (1, sizeof (struct usb_bus));
+	  current_config = 1;
+	  current_if = -1;
+	  current_as = -1;
+	  current_ep = -1;
+	  break;
+	case 'D':
+	  if (parse_bcd ("Ver=", line, &number))
+	    dev->descriptor.bcdUSB = number;
+	  if (parse_num ("Cls=", line, 16, &number))
+	    dev->descriptor.bDeviceClass = number;
+	  if (parse_num ("Sub=", line, 16, &number))
+	    dev->descriptor.bDeviceSubClass = number;
+	  if (parse_num ("Prot=", line, 16, &number))
+	    dev->descriptor.bDeviceProtocol = number;
+	  if (parse_num ("MxPS=", line, 10, &number))
+	    dev->descriptor.bMaxPacketSize0 = number;
+	  if (parse_num ("#Cfgs=", line, 10, &number))
+	    dev->descriptor.bNumConfigurations = number;
+	  dev->config = calloc (number, sizeof (struct usb_config_descriptor));
+	  break;
+	case 'P':
+	  if (parse_num ("Vendor=", line, 16, &number))
+	    dev->descriptor.idVendor = number;
+	  if (parse_num ("ProdID=", line, 16, &number))
+	    dev->descriptor.idProduct = number;
+	  if (parse_bcd ("Rev=", line, &number))
+	    dev->descriptor.bcdDevice = number;
+	  break;
+	case 'C':
+	  current_if = -1;
+	  current_as = -1;
+	  current_ep = -1;
+	  if (parse_num ("Cfg#=", line, 10, &number))
+	    {
+	      current_config = number - 1;
+	      dev->config[current_config].bConfigurationValue = number;
+	    }
+	  if (parse_num ("Ifs=", line, 10, &number))
+	    dev->config[current_config].bNumInterfaces = number;
+	  dev->config[current_config].interface 
+	    = calloc (number, sizeof (struct usb_interface));
+	  if (parse_num ("Atr=", line, 16, &number))
+	    dev->config[current_config].bmAttributes = number;
+	  if (parse_num ("MxPwr=", line, 10, &number))
+	    dev->config[current_config].MaxPower = number / 2;
+	  break;
+	case 'I':
+	  current_ep = -1;
+	  if (parse_num ("If#=", line, 10, &number))
+	    {
+	      if (current_if != number)
+		{
+		  current_if = number;
+		  current_as = -1;
+		  dev->config[current_config].interface[current_if].altsetting
+		    = calloc (20, sizeof (struct usb_interface_descriptor));
+		  /* Can't read number of altsettings */
+		  dev->config[current_config].interface[current_if].num_altsetting = 1;
+		}
+	      else
+		dev->config[current_config].interface[current_if].num_altsetting++;
+	    }
+	  if (parse_num ("Alt=", line, 10, &number))
+	    {
+	      current_as = number;
+	      dev->config[current_config].interface[current_if].altsetting[current_as].bInterfaceNumber 
+		= current_if;
+	      dev->config[current_config].interface[current_if].altsetting[current_as].bAlternateSetting 
+		= current_as;
+	    }
+	  if (parse_num ("#EPs=", line, 10, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as].bNumEndpoints 
+	      = number;
+	  dev->config[current_config].interface[current_if].altsetting[current_as].endpoint 
+	    = calloc (number, sizeof (struct usb_endpoint_descriptor));
+	  if (parse_num ("Cls=", line, 16, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as].bInterfaceClass 
+	      = number;
+	  if (parse_num ("Sub=", line, 16, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as].bInterfaceSubClass 
+	      = number;
+	  if (parse_num ("Prot=", line, 16, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as].bInterfaceProtocol 
+	      = number;
+	  break;
+	case 'E':
+	  current_ep++;
+	  if (parse_num ("Ad=", line, 16, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as]
+	      .endpoint[current_ep].bEndpointAddress = number;
+	  if (parse_num ("Atr=", line, 16, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as]
+	      .endpoint[current_ep].bmAttributes = number;
+	  if (parse_num ("MxPS=", line, 10, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as]
+	      .endpoint[current_ep].wMaxPacketSize = number;
+	  if (parse_num ("Ivl=", line, 10, &number))
+	    dev->config[current_config].interface[current_if].altsetting[current_as]
+	      .endpoint[current_ep].bInterval = number;
+	  break;
+	case 'S':
+	case 'B':
+	  continue;
+	default:
+	  if (verbose > 1)
+	    printf ("ignoring unknown line identifier: %c\n", token[0]);
+	  continue;
+	}
+      free (token);
+    }
+  if (dev)
+    check_libusb_device (dev, SANE_TRUE);
+  fclose (parsefile);
+  return;
+}
+#endif
+
+int
+main (int argc, char **argv)
+{
+  char **dev_list, **usb_dev_list, *dev_name, **ap;
+  int enable_pp_checks = SANE_FALSE;
+
+  prog_name = strrchr (argv[0], '/');
+  if (prog_name)
+    ++prog_name;
+  else
+    prog_name = argv[0];
+
+  for (ap = argv + 1; ap < argv + argc; ++ap)
+    {
+      if ((*ap)[0] != '-')
+	break;
+      switch ((*ap)[1])
+	{
+	case '?':
+	case 'h':
+	  usage (0);
+	  exit (0);
+
+	case 'v':
+	  ++verbose;
+	  break;
+
+	case 'q':
+	  --verbose;
+	  break;
+
+	case 'f':
+	  force = SANE_TRUE;
+	  break;
+
+	case 'p':
+	  enable_pp_checks = SANE_TRUE;
+	  break;
+
+	case 'F':
+#ifdef HAVE_LIBUSB
+	  parse_file ((char *) (*(++ap)));
+#elif defined(HAVE_LIBUSB_1_0)
+	  printf ("option -F not implemented with libusb-1.0\n");
+#else
+	  printf ("libusb not available: option -F can't be used\n");
+#endif
+	  exit (0);
+
+	default:
+	  printf ("unknown option: -%c, try -h for help\n", (*ap)[1]);
+	  exit (0);
+	}
+    }
+  if (ap < argv + argc)
+    {
+      dev_list = ap;
+      usb_dev_list = ap;
+    }
+  else
+    {
+      static char *default_dev_list[] = {
+#if defined(__sgi)
+	"/dev/scsi/sc0d1l0", "/dev/scsi/sc0d2l0",
+	"/dev/scsi/sc0d3l0", "/dev/scsi/sc0d4l0",
+	"/dev/scsi/sc0d5l0", "/dev/scsi/sc0d6l0",
+	"/dev/scsi/sc0d7l0", "/dev/scsi/sc0d8l0",
+	"/dev/scsi/sc0d9l0", "/dev/scsi/sc0d10l0",
+	"/dev/scsi/sc0d11l0", "/dev/scsi/sc0d12l0",
+	"/dev/scsi/sc0d13l0", "/dev/scsi/sc0d14l0",
+	"/dev/scsi/sc0d15l0",
+	"/dev/scsi/sc1d1l0", "/dev/scsi/sc1d2l0",
+	"/dev/scsi/sc1d3l0", "/dev/scsi/sc1d4l0",
+	"/dev/scsi/sc1d5l0", "/dev/scsi/sc1d6l0",
+	"/dev/scsi/sc1d7l0", "/dev/scsi/sc1d8l0",
+	"/dev/scsi/sc1d9l0", "/dev/scsi/sc1d10l0",
+	"/dev/scsi/sc1d11l0", "/dev/scsi/sc1d12l0",
+	"/dev/scsi/sc1d13l0", "/dev/scsi/sc1d14l0",
+	"/dev/scsi/sc1d15l0",
+	"/dev/scsi/sc2d1l0", "/dev/scsi/sc2d2l0",
+	"/dev/scsi/sc2d3l0", "/dev/scsi/sc2d4l0",
+	"/dev/scsi/sc2d5l0", "/dev/scsi/sc2d6l0",
+	"/dev/scsi/sc2d7l0", "/dev/scsi/sc2d8l0",
+	"/dev/scsi/sc2d9l0", "/dev/scsi/sc2d10l0",
+	"/dev/scsi/sc2d11l0", "/dev/scsi/sc2d12l0",
+	"/dev/scsi/sc2d13l0", "/dev/scsi/sc2d14l0",
+	"/dev/scsi/sc2d15l0",
+	"/dev/scsi/sc3d1l0", "/dev/scsi/sc3d2l0",
+	"/dev/scsi/sc3d3l0", "/dev/scsi/sc3d4l0",
+	"/dev/scsi/sc3d5l0", "/dev/scsi/sc3d6l0",
+	"/dev/scsi/sc3d7l0", "/dev/scsi/sc3d8l0",
+	"/dev/scsi/sc3d9l0", "/dev/scsi/sc3d10l0",
+	"/dev/scsi/sc3d11l0", "/dev/scsi/sc3d12l0",
+	"/dev/scsi/sc3d13l0", "/dev/scsi/sc3d14l0",
+	"/dev/scsi/sc3d15l0",
+	"/dev/scsi/sc4d1l0", "/dev/scsi/sc4d2l0",
+	"/dev/scsi/sc4d3l0", "/dev/scsi/sc4d4l0",
+	"/dev/scsi/sc4d5l0", "/dev/scsi/sc4d6l0",
+	"/dev/scsi/sc4d7l0", "/dev/scsi/sc4d8l0",
+	"/dev/scsi/sc4d9l0", "/dev/scsi/sc4d10l0",
+	"/dev/scsi/sc4d11l0", "/dev/scsi/sc4d12l0",
+	"/dev/scsi/sc4d13l0", "/dev/scsi/sc4d14l0",
+	"/dev/scsi/sc4d15l0",
+	"/dev/scsi/sc5d1l0", "/dev/scsi/sc5d2l0",
+	"/dev/scsi/sc5d3l0", "/dev/scsi/sc5d4l0",
+	"/dev/scsi/sc5d5l0", "/dev/scsi/sc5d6l0",
+	"/dev/scsi/sc5d7l0", "/dev/scsi/sc5d8l0",
+	"/dev/scsi/sc5d9l0", "/dev/scsi/sc5d10l0",
+	"/dev/scsi/sc5d11l0", "/dev/scsi/sc5d12l0",
+	"/dev/scsi/sc5d13l0", "/dev/scsi/sc5d14l0",
+	"/dev/scsi/sc5d15l0",
+	"/dev/scsi/sc6d1l0", "/dev/scsi/sc6d2l0",
+	"/dev/scsi/sc6d3l0", "/dev/scsi/sc6d4l0",
+	"/dev/scsi/sc6d5l0", "/dev/scsi/sc6d6l0",
+	"/dev/scsi/sc6d7l0", "/dev/scsi/sc6d8l0",
+	"/dev/scsi/sc6d9l0", "/dev/scsi/sc6d10l0",
+	"/dev/scsi/sc6d11l0", "/dev/scsi/sc6d12l0",
+	"/dev/scsi/sc6d13l0", "/dev/scsi/sc6d14l0",
+	"/dev/scsi/sc6d15l0",
+	"/dev/scsi/sc7d1l0", "/dev/scsi/sc7d2l0",
+	"/dev/scsi/sc7d3l0", "/dev/scsi/sc7d4l0",
+	"/dev/scsi/sc7d5l0", "/dev/scsi/sc7d6l0",
+	"/dev/scsi/sc7d7l0", "/dev/scsi/sc7d8l0",
+	"/dev/scsi/sc7d9l0", "/dev/scsi/sc7d10l0",
+	"/dev/scsi/sc7d11l0", "/dev/scsi/sc7d12l0",
+	"/dev/scsi/sc7d13l0", "/dev/scsi/sc7d14l0",
+	"/dev/scsi/sc7d15l0",
+	"/dev/scsi/sc8d1l0", "/dev/scsi/sc8d2l0",
+	"/dev/scsi/sc8d3l0", "/dev/scsi/sc8d4l0",
+	"/dev/scsi/sc8d5l0", "/dev/scsi/sc8d6l0",
+	"/dev/scsi/sc8d7l0", "/dev/scsi/sc8d8l0",
+	"/dev/scsi/sc8d9l0", "/dev/scsi/sc8d10l0",
+	"/dev/scsi/sc8d11l0", "/dev/scsi/sc8d12l0",
+	"/dev/scsi/sc8d13l0", "/dev/scsi/sc8d14l0",
+	"/dev/scsi/sc8d15l0",
+	"/dev/scsi/sc9d1l0", "/dev/scsi/sc9d2l0",
+	"/dev/scsi/sc9d3l0", "/dev/scsi/sc9d4l0",
+	"/dev/scsi/sc9d5l0", "/dev/scsi/sc9d6l0",
+	"/dev/scsi/sc9d7l0", "/dev/scsi/sc9d8l0",
+	"/dev/scsi/sc9d9l0", "/dev/scsi/sc9d10l0",
+	"/dev/scsi/sc9d11l0", "/dev/scsi/sc9d12l0",
+	"/dev/scsi/sc9d13l0", "/dev/scsi/sc9d14l0",
+	"/dev/scsi/sc9d15l0",
+	"/dev/scsi/sc10d1l0", "/dev/scsi/sc10d2l0",
+	"/dev/scsi/sc10d3l0", "/dev/scsi/sc10d4l0",
+	"/dev/scsi/sc10d5l0", "/dev/scsi/sc10d6l0",
+	"/dev/scsi/sc10d7l0", "/dev/scsi/sc10d8l0",
+	"/dev/scsi/sc10d9l0", "/dev/scsi/sc10d10l0",
+	"/dev/scsi/sc10d11l0", "/dev/scsi/sc10d12l0",
+	"/dev/scsi/sc10d13l0", "/dev/scsi/sc10d14l0",
+	"/dev/scsi/sc10d15l0",
+	"/dev/scsi/sc11d1l0", "/dev/scsi/sc11d2l0",
+	"/dev/scsi/sc11d3l0", "/dev/scsi/sc11d4l0",
+	"/dev/scsi/sc11d5l0", "/dev/scsi/sc11d6l0",
+	"/dev/scsi/sc11d7l0", "/dev/scsi/sc11d8l0",
+	"/dev/scsi/sc11d9l0", "/dev/scsi/sc11d10l0",
+	"/dev/scsi/sc11d11l0", "/dev/scsi/sc11d12l0",
+	"/dev/scsi/sc11d13l0", "/dev/scsi/sc11d14l0",
+	"/dev/scsi/sc11d15l0",
+	"/dev/scsi/sc12d1l0", "/dev/scsi/sc12d2l0",
+	"/dev/scsi/sc12d3l0", "/dev/scsi/sc12d4l0",
+	"/dev/scsi/sc12d5l0", "/dev/scsi/sc12d6l0",
+	"/dev/scsi/sc12d7l0", "/dev/scsi/sc12d8l0",
+	"/dev/scsi/sc12d9l0", "/dev/scsi/sc12d10l0",
+	"/dev/scsi/sc12d11l0", "/dev/scsi/sc12d12l0",
+	"/dev/scsi/sc12d13l0", "/dev/scsi/sc12d14l0",
+	"/dev/scsi/sc12d15l0",
+	"/dev/scsi/sc13d1l0", "/dev/scsi/sc13d2l0",
+	"/dev/scsi/sc13d3l0", "/dev/scsi/sc13d4l0",
+	"/dev/scsi/sc13d5l0", "/dev/scsi/sc13d6l0",
+	"/dev/scsi/sc13d7l0", "/dev/scsi/sc13d8l0",
+	"/dev/scsi/sc13d9l0", "/dev/scsi/sc13d10l0",
+	"/dev/scsi/sc13d11l0", "/dev/scsi/sc13d12l0",
+	"/dev/scsi/sc13d13l0", "/dev/scsi/sc13d14l0",
+	"/dev/scsi/sc13d15l0",
+	"/dev/scsi/sc14d1l0", "/dev/scsi/sc14d2l0",
+	"/dev/scsi/sc14d3l0", "/dev/scsi/sc14d4l0",
+	"/dev/scsi/sc14d5l0", "/dev/scsi/sc14d6l0",
+	"/dev/scsi/sc14d7l0", "/dev/scsi/sc14d8l0",
+	"/dev/scsi/sc14d9l0", "/dev/scsi/sc14d10l0",
+	"/dev/scsi/sc14d11l0", "/dev/scsi/sc14d12l0",
+	"/dev/scsi/sc14d13l0", "/dev/scsi/sc14d14l0",
+	"/dev/scsi/sc14d15l0",
+	"/dev/scsi/sc15d1l0", "/dev/scsi/sc15d2l0",
+	"/dev/scsi/sc15d3l0", "/dev/scsi/sc15d4l0",
+	"/dev/scsi/sc15d5l0", "/dev/scsi/sc15d6l0",
+	"/dev/scsi/sc15d7l0", "/dev/scsi/sc15d8l0",
+	"/dev/scsi/sc15d9l0", "/dev/scsi/sc15d10l0",
+	"/dev/scsi/sc15d11l0", "/dev/scsi/sc15d12l0",
+	"/dev/scsi/sc15d13l0", "/dev/scsi/sc15d14l0",
+	"/dev/scsi/sc15d15l0",
+#elif defined(__EMX__)
+	"b0t0l0", "b0t1l0", "b0t2l0", "b0t3l0",
+	"b0t4l0", "b0t5l0", "b0t6l0", "b0t7l0",
+	"b1t0l0", "b1t1l0", "b1t2l0", "b1t3l0",
+	"b1t4l0", "b1t5l0", "b1t6l0", "b1t7l0",
+	"b2t0l0", "b2t1l0", "b2t2l0", "b2t3l0",
+	"b2t4l0", "b2t5l0", "b2t6l0", "b2t7l0",
+	"b3t0l0", "b3t1l0", "b3t2l0", "b3t3l0",
+	"b3t4l0", "b3t5l0", "b3t6l0", "b3t7l0",
+#elif defined(__linux__)
+	"/dev/scanner",
+	"/dev/sg0", "/dev/sg1", "/dev/sg2", "/dev/sg3",
+	"/dev/sg4", "/dev/sg5", "/dev/sg6", "/dev/sg7",
+	"/dev/sg8", "/dev/sg9",
+	"/dev/sga", "/dev/sgb", "/dev/sgc", "/dev/sgd",
+	"/dev/sge", "/dev/sgf", "/dev/sgg", "/dev/sgh",
+	"/dev/sgi", "/dev/sgj", "/dev/sgk", "/dev/sgl",
+	"/dev/sgm", "/dev/sgn", "/dev/sgo", "/dev/sgp",
+	"/dev/sgq", "/dev/sgr", "/dev/sgs", "/dev/sgt",
+	"/dev/sgu", "/dev/sgv", "/dev/sgw", "/dev/sgx",
+	"/dev/sgy", "/dev/sgz",
+#elif defined(__NeXT__)
+	"/dev/sg0a", "/dev/sg0b", "/dev/sg0c", "/dev/sg0d",
+	"/dev/sg0e", "/dev/sg0f", "/dev/sg0g", "/dev/sg0h",
+	"/dev/sg1a", "/dev/sg1b", "/dev/sg1c", "/dev/sg1d",
+	"/dev/sg1e", "/dev/sg1f", "/dev/sg1g", "/dev/sg1h",
+	"/dev/sg2a", "/dev/sg2b", "/dev/sg2c", "/dev/sg2d",
+	"/dev/sg2e", "/dev/sg2f", "/dev/sg2g", "/dev/sg2h",
+	"/dev/sg3a", "/dev/sg3b", "/dev/sg3c", "/dev/sg3d",
+	"/dev/sg3e", "/dev/sg3f", "/dev/sg3g", "/dev/sg3h",
+#elif defined(_AIX)
+	"/dev/scanner",
+	"/dev/gsc0", "/dev/gsc1", "/dev/gsc2", "/dev/gsc3",
+	"/dev/gsc4", "/dev/gsc5", "/dev/gsc6", "/dev/gsc7",
+	"/dev/gsc8", "/dev/gsc9", "/dev/gsc10", "/dev/gsc11",
+	"/dev/gsc12", "/dev/gsc13", "/dev/gsc14", "/dev/gsc15",
+#elif defined(__sun)
+	"/dev/scg0a", "/dev/scg0b", "/dev/scg0c", "/dev/scg0d",
+	"/dev/scg0e", "/dev/scg0f", "/dev/scg0g",
+	"/dev/scg1a", "/dev/scg1b", "/dev/scg1c", "/dev/scg1d",
+	"/dev/scg1e", "/dev/scg1f", "/dev/scg1g",
+	"/dev/scg2a", "/dev/scg2b", "/dev/scg2c", "/dev/scg2d",
+	"/dev/scg2e", "/dev/scg2f", "/dev/scg2g",
+	"/dev/sg/0", "/dev/sg/1", "/dev/sg/2", "/dev/sg/3",
+	"/dev/sg/4", "/dev/sg/5", "/dev/sg/6",
+	"/dev/scsi/scanner/", "/dev/scsi/processor/",
+#elif defined(HAVE_CAMLIB_H)
+	"/dev/scanner", "/dev/scanner0", "/dev/scanner1",
+	"/dev/pass0", "/dev/pass1", "/dev/pass2", "/dev/pass3",
+	"/dev/pass4", "/dev/pass5", "/dev/pass6", "/dev/pass7",
+#elif defined(__FreeBSD__)
+	"/dev/uk0", "/dev/uk1", "/dev/uk2", "/dev/uk3", "/dev/uk4",
+	"/dev/uk5", "/dev/uk6",
+#elif defined(__NetBSD__)
+	"/dev/uk0", "/dev/uk1", "/dev/uk2", "/dev/uk3", "/dev/uk4",
+	"/dev/uk5", "/dev/uk6",
+	"/dev/ss0",
+#elif defined(__OpenBSD__)
+	"/dev/uk0", "/dev/uk1", "/dev/uk2", "/dev/uk3", "/dev/uk4",
+	"/dev/uk5", "/dev/uk6",
+#elif defined(__hpux)
+	"/dev/rscsi/",
+#endif
+	0
+      };
+      static char *usb_default_dev_list[] = {
+#if defined(__linux__)
+	"/dev/usb/scanner",
+	"/dev/usb/scanner0", "/dev/usb/scanner1",
+	"/dev/usb/scanner2", "/dev/usb/scanner3",
+	"/dev/usb/scanner4", "/dev/usb/scanner5",
+	"/dev/usb/scanner5", "/dev/usb/scanner7",
+	"/dev/usb/scanner8", "/dev/usb/scanner9",
+	"/dev/usb/scanner10", "/dev/usb/scanner11",
+	"/dev/usb/scanner12", "/dev/usb/scanner13",
+	"/dev/usb/scanner14", "/dev/usb/scanner15",
+	"/dev/usbscanner",
+	"/dev/usbscanner0", "/dev/usbscanner1",
+	"/dev/usbscanner2", "/dev/usbscanner3",
+	"/dev/usbscanner4", "/dev/usbscanner5",
+	"/dev/usbscanner6", "/dev/usbscanner7",
+	"/dev/usbscanner8", "/dev/usbscanner9",
+	"/dev/usbscanner10", "/dev/usbscanner11",
+	"/dev/usbscanner12", "/dev/usbscanner13",
+	"/dev/usbscanner14", "/dev/usbscanner15",
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+	"/dev/uscanner",
+	"/dev/uscanner0", "/dev/uscanner1",
+	"/dev/uscanner2", "/dev/uscanner3",
+	"/dev/uscanner4", "/dev/uscanner5",
+	"/dev/uscanner6", "/dev/uscanner7",
+	"/dev/uscanner8", "/dev/uscanner9",
+	"/dev/uscanner10", "/dev/uscanner11",
+	"/dev/uscanner12", "/dev/uscanner13",
+	"/dev/uscanner14", "/dev/uscanner15",
+#endif
+	0
+      };
+
+#if defined (WIN32_SCSI) || \
+    defined (HAVE_IOKIT_CDB_IOSCSILIB_H) || \
+    defined (HAVE_IOKIT_SCSI_SCSICOMMANDOPERATIONCODES_H) || \
+    defined (HAVE_IOKIT_SCSI_COMMANDS_SCSICOMMANDOPERATIONCODES_H)
+   /* Build a list of valid of possible scanners found */
+      dev_list = build_scsi_dev_list();
+#else
+      dev_list = default_dev_list;
+#endif
+
+      usb_dev_list = usb_default_dev_list;
+    }
+  if (verbose > 1)
+    printf ("This is sane-find-scanner from %s\n", PACKAGE_STRING);
+
+  if (verbose > 0)
+    printf ("\n  # sane-find-scanner will now attempt to detect your scanner. If the"
+	    "\n  # result is different from what you expected, first make sure your"
+	    "\n  # scanner is powered up and properly connected to your computer.\n\n");
+
+  if (verbose > 1)
+    printf ("searching for SCSI scanners:\n");
+
+  while ((dev_name = *dev_list++))
+    {
+      if (strlen (dev_name) == 0)
+	continue;		/* Empty device names ... */
+
+      if (dev_name[strlen (dev_name) - 1] == '/')
+	{
+	  /* check whole directories */
+	  DIR *dir;
+	  char *file_name;
+
+	  dir = scan_directory (dev_name);
+	  if (!dir)
+	    continue;
+
+	  while ((file_name = get_next_file (dev_name, dir)))
+	    check_scsi_file (file_name);
+	}
+      else
+	{
+	  /* check device files */
+	  check_scsi_file (dev_name);
+	}
+    }
+  if (device_found)
+    {
+      if (verbose > 0)
+	printf
+	  ("  # Your SCSI scanner was detected. It may or may not be "
+	   "supported by SANE. Try\n  # scanimage -L and read the backend's "
+	   "manpage.\n");
+    }
+  else
+    {
+      if (verbose > 0)
+	printf
+	  ("  # No SCSI scanners found. If you expected something different, "
+	   "make sure that\n  # you have loaded a kernel SCSI driver for your SCSI "
+	   "adapter.\n");
+      if (!check_sg ())
+	{
+	  if (verbose > 0)
+	    printf
+	      ("  # Also you need support for SCSI Generic (sg) in your "
+	       "operating system.\n  # If using Linux, try \"modprobe "
+	       "sg\".\n");
+	}
+    }
+  if (verbose > 0)
+    printf ("\n");
+  device_found = SANE_FALSE;
+  sanei_usb_init ();
+  if (verbose > 1)
+    printf ("searching for USB scanners:\n");
+
+  while ((dev_name = *usb_dev_list++))
+    {
+      if (strlen (dev_name) == 0)
+	continue;		/* Empty device names ... */
+
+      if (dev_name[strlen (dev_name) - 1] == '/')
+	{
+	  /* check whole directories */
+	  DIR *dir;
+	  char *file_name;
+
+	  dir = scan_directory (dev_name);
+	  if (!dir)
+	    continue;
+
+	  while ((file_name = get_next_file (dev_name, dir)))
+	    check_usb_file (file_name);
+	}
+      else
+	{
+	  /* check device files */
+	  check_usb_file (dev_name);
+	}
+    }
+#ifdef HAVE_LIBUSB
+  /* Now the libusb devices */
+  {
+    struct usb_bus *bus;
+    struct usb_device *dev;
+
+    if (ap < argv + argc)
+      {
+	/* user-specified devices not useful for libusb */
+	if (verbose > 1)
+	  printf ("ignoring libusb devices\n");
+      }
+    else
+      {
+	if (verbose > 2)
+	  printf ("trying libusb:\n");
+	for (bus = usb_get_busses (); bus; bus = bus->next)
+	  {
+	    for (dev = bus->devices; dev; dev = dev->next)
+	      {
+		check_libusb_device (dev, SANE_FALSE);
+	      }			/* for (dev) */
+	  }			/* for (bus) */
+      }
+  }
+#elif defined(HAVE_LIBUSB_1_0)
+  /* Now the libusb-1.0 devices */
+  {
+    if (ap < argv + argc)
+      {
+	/* user-specified devices not useful for libusb */
+	if (verbose > 1)
+	  printf ("ignoring libusb devices\n");
+      }
+    else
+      {
+	libusb_device **devlist;
+	ssize_t devcnt;
+	int i;
+	int ret;
+
+	if (verbose > 2)
+	  printf ("trying libusb:\n");
+
+	ret = libusb_init (&sfs_usb_ctx);
+	if (ret < 0)
+	  {
+	    printf ("# Could not initialize libusb-1.0, error %d\n", ret);
+	    printf ("# Skipping libusb devices\n");
+
+	    goto failed_libusb_1_0;
+	  }
+
+	if (verbose > 3)
+	  libusb_set_debug (sfs_usb_ctx, 3);
+
+	devcnt = libusb_get_device_list (sfs_usb_ctx, &devlist);
+	if (devcnt < 0)
+	  {
+	    printf ("# Could not get device list, error %d\n", ret);
+
+	    goto deinit_libusb_1_0;
+	  }
+
+	for (i = 0; i < devcnt; i++)
+	  {
+	    check_libusb_device (devlist[i], SANE_FALSE);
+	  }
+
+	libusb_free_device_list (devlist, 1);
+
+      deinit_libusb_1_0:
+	libusb_exit (sfs_usb_ctx);
+
+      failed_libusb_1_0:
+	; /* init failed, jumping here */
+      }
+  }
+#else /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+  if (verbose > 1)
+    printf ("libusb not available\n");
+#endif /* not HAVE_LIBUSB && not HAVE_LIBUSB_1_0 */
+
+  if (device_found)
+    {
+      if (libusb_device_found)
+	{
+	  if (verbose > 0)
+	    printf
+	      ("  # Your USB scanner was (probably) detected. It "
+	       "may or may not be supported by\n  # SANE. Try scanimage "
+	       "-L and read the backend's manpage.\n");
+	}
+      else if (verbose > 0)
+	printf
+	  ("  # Your USB scanner was detected. It may or may not "
+	   "be supported by\n  # SANE. Try scanimage -L and read the "
+	   "backend's manpage.\n");
+      if (unknown_found && verbose > 0)
+	printf
+	  ("  # `UNKNOWN vendor and product' means that there seems to be a "
+	   "scanner at this\n  # device file but the vendor and product ids "
+	   "couldn't be identified.\n  # Currently identification only works "
+	   "with Linux versions >= 2.4.8. You may\n  # need to configure your "
+	   "backend manually, see the backend's manpage.\n");
+    }
+  else
+    {
+      if (verbose > 0)
+	printf
+	  ("  # No USB scanners found. If you expected something different, "
+	   "make sure that\n  # you have loaded a kernel driver for your USB host "
+	   "controller and have setup\n  # the USB system correctly. "
+	   "See man sane-usb for details.\n");
+#if !defined(HAVE_LIBUSB) && !defined(HAVE_LIBUSB_1_0)
+      if (verbose > 0)
+	printf ("  # SANE has been built without libusb support. This may be a "
+		"reason\n  # for not detecting USB scanners. Read README for "
+		"more details.\n");
+#endif
+    }
+  if (enable_pp_checks == SANE_TRUE) 
+    {
+      if (!check_mustek_pp_device() && verbose > 0)
+        printf ("\n  # No Mustek parallel port scanners found. If you expected"
+                " something\n  # different, make sure the scanner is correctly"
+	        " connected to your computer\n  # and you have apropriate"
+	        " access rights.\n");
+    }
+  else if (verbose > 0)
+    printf ("\n  # Not checking for parallel port scanners.\n");
+  if (verbose > 0)
+    printf ("\n  # Most Scanners connected to the parallel port or other "
+	    "proprietary ports\n  # can't be detected by this program.\n");
+#ifdef HAVE_GETUID
+  if (getuid ())
+    if (verbose > 0)
+      printf
+	("\n  # You may want to run this program as root to find all devices. "
+	 "Once you\n  # found the scanner devices, be sure to adjust access "
+	 "permissions as\n  # necessary.\n");
+#endif
+
+  if (verbose > 1)
+    printf ("done\n");
+
+  return 0;
+}
diff --git a/tools/umax_pp.c b/tools/umax_pp.c
new file mode 100644
index 0000000..134320b
--- /dev/null
+++ b/tools/umax_pp.c
@@ -0,0 +1,573 @@
+/*
+*  This program is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License
+*  as published by the Free Software Foundation; either version
+*  2 of the License, or (at your option) any later version.
+*/
+
+/* For putenv */
+#define _XOPEN_SOURCE
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+
+#define __MAIN__
+
+#include "../backend/umax_pp_low.h"
+#include "../backend/umax_pp_mid.h"
+
+static void
+Usage (char *name)
+{
+  fprintf (stderr,
+	   "%s [-c color_mode] [-x coord] [-y coord] [-w width] [-h height] [-g gain] [-z offset] [-d dpi] [-t level] [-s] [-p] [-l 0|1] [-a ioport_addr] [-r]\n",
+	   name);
+}
+
+
+int
+main (int argc, char **argv)
+{
+  char dbgstr[80];
+  int probe = 0;
+  int port = 0;
+  char *name = NULL;
+  int scan = 0;
+  int lamp = -1;
+  int i, fd;
+  int found;
+  int recover = 0;
+  int trace = 0;
+  int maxw, maxh;
+
+/* scanning parameters : defaults to preview (75 dpi color, full scan area) */
+  int gain = 0x0;
+  int offset = 0x646;
+  int dpi = 75;
+  int x = 0, y = 0;
+  int width = -1, height = -1;
+  int color = RGB_MODE;
+
+  char **ports;
+  int rc;
+
+
+  /* option parsing */
+  /*
+     -c --color   : color mode: RGB, BW, BW12, RGB12
+     -x           : x coordinate
+     -y           : y coordinate
+     -w --witdh   : scan width
+     -h --height  : scan height
+     -f --file    : session file
+     -p --probe   : probe scanner
+     -s --scan    : scan
+     -t --trace   : execution trace
+     -l --lamp    : turn lamp on/off 1/0
+     -d --dpi     : set scan resolution
+     -g --gain   : set RVB gain
+     -z --offset: set offset
+     -a --addr    : io port address
+     -n --name    : ppdev device name
+     -r           : recover from previous failed scan
+     -m --model   : model revision
+   */
+
+
+  i = 1;
+  trace = 0;
+  sanei_umax_pp_setauto (1);
+  while (i < argc)
+    {
+      found = 0;
+
+      if ((strcmp (argv[i], "-p") == 0) || (strcmp (argv[i], "--probe") == 0))
+	{
+	  probe = 1;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-c") == 0) || (strcmp (argv[i], "--color") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected color mode value\n");
+	      return 0;
+	    }
+	  color = 0;
+	  i++;
+	  found = 1;
+	  if (strcmp (argv[i], "RGB") == 0)
+	    color = RGB_MODE;
+	  if (strcmp (argv[i], "RGB12") == 0)
+	    color = RGB12_MODE;
+	  if (strcmp (argv[i], "BW") == 0)
+	    color = BW_MODE;
+	  if (strcmp (argv[i], "BW12") == 0)
+	    color = BW12_MODE;
+	  if (color == 0)
+	    {
+	      fprintf (stderr, "unexpected color mode value <%s>\n", argv[i]);
+	      fprintf (stderr, "Must be RGB, RGB12, BW, or BW12\n");
+	      return 0;
+	    }
+	}
+
+
+      if (strcmp (argv[i], "-x") == 0)
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected x value\n");
+	      return 0;
+	    }
+	  x = atoi (argv[i + 1]);
+	  i++;
+	  found = 1;
+	}
+
+      if (strcmp (argv[i], "-y") == 0)
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected y value\n");
+	      return 0;
+	    }
+	  y = atoi (argv[i + 1]);
+	  i++;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-w") == 0) || (strcmp (argv[i], "--witdh") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected width value\n");
+	      return 0;
+	    }
+	  width = atoi (argv[i + 1]);
+	  i++;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-h") == 0)
+	  || (strcmp (argv[i], "--height") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected height value\n");
+	      return 0;
+	    }
+	  height = atoi (argv[i + 1]);
+	  i++;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-t") == 0) || (strcmp (argv[i], "--trace") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected trace value\n");
+	      return 0;
+	    }
+	  trace = atoi (argv[i + 1]);
+	  i++;
+	  found = 1;
+	}
+
+
+      if ((strcmp (argv[i], "-r") == 0)
+	  || (strcmp (argv[i], "--recover") == 0))
+	{
+	  recover = 1;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-s") == 0) || (strcmp (argv[i], "--scan") == 0))
+	{
+	  scan = 1;
+	  /* we have to probe again if we scan */
+	  probe = 1;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-d") == 0) || (strcmp (argv[i], "--dpi") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected dpi value\n");
+	      return 0;
+	    }
+	  dpi = atoi (argv[i + 1]);
+	  if ((dpi < 75) || (dpi > 1200))
+	    {
+	      fprintf (stderr, "dpi value has to be between 75 and 1200\n");
+	      return 0;
+	    }
+	  if ((dpi != 75)
+	      && (dpi != 150)
+	      && (dpi != 300) && (dpi != 600) && (dpi != 1200))
+	    {
+	      fprintf (stderr,
+		       "dpi value has to be 75, 150, 300, 600 or 1200\n");
+	      return 0;
+	    }
+	  i++;
+	  found = 1;
+	}
+
+      if ((strcmp (argv[i], "-g") == 0)
+	  || (strcmp (argv[i], "--gain") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected hex gain value ( ex: A59 )\n");
+	      return 0;
+	    }
+	  i++;
+	  found = 1;
+	  if (strlen (argv[i]) != 3)
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected hex gain value ( ex: A59 )\n");
+	      return 0;
+	    }
+	  gain = strtol (argv[i], NULL, 16);
+	  sanei_umax_pp_setauto (0);
+	}
+
+      if ((strcmp (argv[i], "-z") == 0)
+	  || (strcmp (argv[i], "--offset") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected hex offset value ( ex: A59 )\n");
+	      return 0;
+	    }
+	  i++;
+	  found = 1;
+	  if (strlen (argv[i]) != 3)
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected hex offset value ( ex: A59 )\n");
+	      return 0;
+	    }
+	  offset = strtol (argv[i], NULL, 16);
+	}
+
+      if ((strcmp (argv[i], "-n") == 0) || (strcmp (argv[i], "--name") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr,
+		       "expected device name ( ex: /dev/parport0 )\n");
+	      return 0;
+	    }
+	  i++;
+	  found = 1;
+	  name = argv[i];
+	}
+      if ((strcmp (argv[i], "-a") == 0) || (strcmp (argv[i], "--addr") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected hex io port value ( ex: 3BC )\n");
+	      return 0;
+	    }
+	  i++;
+	  found = 1;
+	  if ((strlen (argv[i]) < 3) || (strlen (argv[i]) > 4))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected hex io port value ( ex: 378 )\n");
+	      return 0;
+	    }
+	  port = strtol (argv[i], NULL, 16);
+	}
+
+
+      if ((strcmp (argv[i], "-l") == 0) || (strcmp (argv[i], "--lamp") == 0))
+	{
+	  if (i == (argc - 1))
+	    {
+	      Usage (argv[0]);
+	      fprintf (stderr, "expected lamp value\n");
+	      return 0;
+	    }
+	  lamp = atoi (argv[i + 1]);
+	  i++;
+	  found = 1;
+	}
+
+      if (!found)
+	{
+	  Usage (argv[0]);
+	  fprintf (stderr, "unexpected argument <%s>\n", argv[i]);
+	  return 0;
+	}
+
+      /* next arg */
+      i++;
+    }
+
+  /* since we use DBG, we have to set env var */
+  /* according to the required trace level    */
+  if (trace)
+    {
+      sprintf (dbgstr, "SANE_DEBUG_UMAX_PP_LOW=%d", trace);
+      putenv (dbgstr);
+    }
+
+  /* no address or device given */
+  rc = 0;
+  if ((name == NULL) && (port == 0))
+    {
+      /* safe tests: user parallel port devices */
+      ports = sanei_parport_find_device ();
+      if (ports != NULL)
+	{
+	  i = 0;
+	  rc = 0;
+	  while ((ports[i] != NULL) && (rc != 1))
+	    {
+	      rc = sanei_umax_pp_initPort (port, ports[i]);
+	      i++;
+	    }
+	}
+
+      /* try for direct hardware access */
+      if (rc != 1)
+	{
+	  ports = sanei_parport_find_port ();
+	  i = 0;
+	  rc = 0;
+	  while ((ports[i] != NULL) && (rc != 1))
+	    {
+	      rc = sanei_umax_pp_initPort (strtol (ports[i], NULL, 16), NULL);
+	      i++;
+	    }
+	}
+      if (rc != 1)
+	{
+	  fprintf (stderr, "failed to detect a valid device or port!\n");
+	  return 0;
+	}
+    }
+  else
+    {
+      if (sanei_umax_pp_initPort (port, name) != 1)
+	{
+	  if (port)
+	    fprintf (stderr, "failed to gain direct acces to port 0x%X!\n",
+		     port);
+	  else
+	    fprintf (stderr, "failed to gain acces to device %s!\n", name);
+	  return 0;
+	}
+    }
+  if (trace)
+    {
+      printf
+	("UMAX 610P/1220P/2000P scanning program version 6.4 starting ...\n");
+#ifdef HAVE_LINUX_PPDEV_H
+      printf ("ppdev character device built-in.\n");
+#endif
+#ifdef ENABLE_PARPORT_DIRECTIO
+      printf ("direct hardware access built-in.\n");
+#endif
+    }
+
+
+  /* scanning is the default behaviour */
+  if ((!scan) && (lamp < 0) && (!probe))
+    scan = 1;
+
+
+  /* probe scanner */
+  if ((probe) || (lamp >= 0))
+    {
+      printf ("Probing scanner ....\n");
+      if (sanei_umax_pp_probeScanner (recover) != 1)
+	{
+	  if (recover)
+	    {
+	      sanei_umax_pp_initTransport (recover);
+	      sanei_umax_pp_endSession ();
+	      if (sanei_umax_pp_probeScanner (recover) != 1)
+		{
+		  printf ("Recover failed ....\n");
+		  return 0;
+		}
+	      printf ("Recover done !\n");
+	    }
+	  else
+	    return 0;
+	}
+
+      /* could be written better .... but it is only test */
+      sanei_umax_pp_endSession ();
+
+      /* init transport layer */
+      if (sanei_umax_pp_initTransport (0) != 1)
+	{
+	  printf ("initTransport() failed (%s:%d)\n", __FILE__, __LINE__);
+	  return 0;
+	}
+      i = sanei_umax_pp_checkModel ();
+      if (i < 600)
+	{
+	  sanei_umax_pp_endSession ();
+	  printf ("checkModel() failed (%s:%d)\n", __FILE__, __LINE__);
+	  return 0;
+	}
+      printf ("UMAX Astra %dP detected \n", i);
+
+      /* free scanner if a scan is planned */
+      if (scan)
+	sanei_umax_pp_endSession ();
+      printf ("Done ....\n");
+    }
+
+  /* lamp on/off: must come after probing (610p handling) */
+  if (lamp >= 0)
+    {
+      /* init transport layer */
+      if (trace)
+	printf ("Tryning to set lamp %s\n", lamp ? "on" : "off");
+      if (sanei_umax_pp_initTransport (recover) != 1)
+	{
+	  printf ("initTransport() failed (%s:%d)\n", __FILE__, __LINE__);
+	  return 0;
+	}
+      else
+	{
+	  if (trace)
+	    printf ("initTransport passed...\n");
+	}
+      if (sanei_umax_pp_setLamp (lamp) == 0)
+	{
+	  fprintf (stderr, "Setting lamp state failed!\n");
+	  return 0;
+	}
+      else
+	{
+	  if (trace)
+	    printf ("sanei_umax_pp_setLamp passed...\n");
+	}
+    }
+
+  /* scan */
+  if (scan)
+    {
+      printf ("Scanning ....\n");
+      if (sanei_umax_pp_getastra () < 1210)
+	{
+	  maxw = 2550;
+	  maxh = 3500;
+	}
+      else
+	{
+	  maxw = 5100;
+	  maxh = 7000;
+	}
+      if (width < 0)
+	width = maxw;
+      if (height < 0)
+	height = maxh;
+
+      if ((width < 1) || (width > maxw))
+	{
+	  fprintf (stderr, "width must be between 1 and %d\n", maxw);
+	  return 0;
+	}
+      if (x + width > maxw)
+	{
+	  fprintf (stderr,
+		   "Right side of scan area exceed physical limits (x+witdh>%d)\n",
+		   maxw);
+	  return 0;
+	}
+      if (y < 0 || y > maxh)
+	{
+	  fprintf (stderr, "y must be between 0 and %d\n", maxh - 1);
+	  return 0;
+	}
+      if (x < 0 || x > maxw)
+	{
+	  fprintf (stderr, "x must be between 0 and %d\n", maxw - 1);
+	  return 0;
+	}
+      if ((height < 1) || (height > maxh))
+	{
+	  fprintf (stderr, "height must be between 1 and %d\n", maxh);
+	  return 0;
+	}
+      if (y + height > maxh)
+	{
+	  fprintf (stderr,
+		   "Bottom side of scan area exceed physical limits (y+height>%d)\n",
+		   maxh);
+	  return 0;
+	}
+
+      /* init transport layer */
+      /* 0: failed
+         1: success
+         2: retry
+       */
+      do
+	{
+	  i = sanei_umax_pp_initTransport (recover);
+	}
+      while (i == 2);
+      if (i != 1)
+	{
+	  printf ("initTransport() failed (%s:%d)\n", __FILE__, __LINE__);
+	  return 0;
+	}
+      /* init scanner */
+      if (sanei_umax_pp_initScanner (recover) == 0)
+	{
+	  sanei_umax_pp_endSession ();
+	  return 0;
+	}
+
+      /* set x origin left to right */
+      x = sanei_umax_pp_getLeft () + (maxw - x) - width;
+
+      /* scan */
+      if (sanei_umax_pp_scan
+	  (x, y, width, height, dpi, color, gain, offset) != 1)
+	{
+	  sanei_umax_pp_endSession ();
+	  return 0;
+	}
+
+      /* wait for head parking */
+      sanei_umax_pp_parkWait ();
+      printf ("Done ....\n");
+    }
+  sanei_umax_pp_endSession ();
+#ifdef HAVE_LINUX_PPDEV_H
+  fd = sanei_umax_pp_getparport ();
+  if (fd > 0)
+    {
+      close (fd);
+      sanei_umax_pp_setparport (0);
+    }
+#endif
+
+  return 1;
+}
diff --git a/tools/xerox b/tools/xerox
new file mode 100755
index 0000000..0b2a7c3
--- /dev/null
+++ b/tools/xerox
@@ -0,0 +1,60 @@
+#!/bin/sh
+#
+# This is a xerox script for Laserjet Printer.
+# To get use of Postscript change the Printercommand and enable the
+# command at the end of this File.
+#
+DEV=mustek:/dev/scanner
+RES=300
+PAPERTYPE=letter
+#PAPERTYPE=a4
+PRINTERTYPE=ps
+#PRINTERTYPE=lj
+#
+# Non-printable area (left, right, top, and bottom margins):
+#
+LMARGIN=0.0
+RMARGIN=0.0
+TMARGIN=0.25
+BMARGIN=0.0
+#
+# Scanner-specific options:
+#
+DEVOPTS="--mode Gray"
+#DEVOPTS="$DEVOPTS --custom-gamma=yes --gamma-table [0]0-[64]128-[255]255"
+#DEVOPTS="$DEVOPTS --backtrack=yes"	 # needed for Mustek 12000SP
+#
+# Printer Command/Resolution
+PRES=$RES # change this if other Res. is desired
+#
+# Papersize in inch
+if [ "$PAPERTYPE" = "letter" ]; then
+  WIDTH=8; HEIGHT=10
+else
+  # assume a4 paper
+  WIDTH=8.27; HEIGHT=11.69
+fi
+
+SCANWIDTH=`bc <<_EOF_ 
+scale=3
+$WIDTH-$LMARGIN-$RMARGIN
+_EOF_`
+SCANHEIGHT=`bc <<_EOF_ 
+scale=3
+$HEIGHT-$TMARGIN-$BMARGIN
+_EOF_`
+#
+SCALE=`bc << _EOF_
+scale=3
+75/$RES
+_EOF_`
+
+if [ "$PRINTERTYPE" = "ps" ]; then
+  POST="pnmtops -rle -scale $SCALE -dpi $PRES | lpr"
+else
+  POST="pgmtopbm | pbmtolj -resolution $PRES | lpr -Praw"
+fi
+
+scanimage -d $DEV \
+	-x $SCANWIDTH\" -y $SCANHEIGHT\" -l $LMARGIN\" -t $TMARGIN\" \
+        --resolution $RES $DEVOPTS | eval $POST