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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /tools/mustek600iin-off.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'tools/mustek600iin-off.c')
-rw-r--r--tools/mustek600iin-off.c199
1 files changed, 199 insertions, 0 deletions
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);
+}