Merge tag 'upstream/2.3_rc1'

Upstream version 2.3_rc1

12 files changed, 1339 insertions, 0 deletions

diff --git a/src/compat/Makefile.am b/src/compat/Makefile.am
new file mode 100644
index 0000000..7ad4452
--- /dev/null
+++ b/src/compat/Makefile.am
@@ -0,0 +1,29 @@
+#
+#  OpenVPN -- An application to securely tunnel IP networks
+#             over a single UDP port, with support for SSL/TLS-based
+#             session authentication and key exchange,
+#             packet encryption, packet authentication, and
+#             packet compression.
+#
+#  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+#  Copyright (C) 2006-2012 Alon Bar-Lev <alon.barlev@gmail.com>
+#
+
+MAINTAINERCLEANFILES = \
+	$(srcdir)/Makefile.in
+
+EXTRA_DIST = \
+	compat.vcxproj \
+	compat.vcxproj.filters
+
+noinst_LTLIBRARIES = libcompat.la
+
+libcompat_la_SOURCES = \
+	compat.h \
+	compat-stdbool.h \
+	compat-dirname.c \
+	compat-basename.c \
+	compat-gettimeofday.c \
+	compat-daemon.c \
+	compat-inet_ntop.c \
+	compat-inet_pton.c
diff --git a/src/compat/Makefile.in b/src/compat/Makefile.in
new file mode 100644
index 0000000..c9e8f3b
--- /dev/null
+++ b/src/compat/Makefile.in
@@ -0,0 +1,546 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  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@
+
+#
+#  OpenVPN -- An application to securely tunnel IP networks
+#             over a single UDP port, with support for SSL/TLS-based
+#             session authentication and key exchange,
+#             packet encryption, packet authentication, and
+#             packet compression.
+#
+#  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+#  Copyright (C) 2006-2012 Alon Bar-Lev <alon.barlev@gmail.com>
+#
+
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
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+am__aclocal_m4_deps = $(top_srcdir)/m4/ax_emptyarray.m4 \
+	$(top_srcdir)/m4/ax_socklen_t.m4 \
+	$(top_srcdir)/m4/ax_varargs.m4 $(top_srcdir)/m4/libtool.m4 \
+	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
+	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
+	$(top_srcdir)/m4/pkg.m4 $(top_srcdir)/version.m4 \
+	$(top_srcdir)/compat.m4 $(top_srcdir)/configure.ac
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+	$(ACLOCAL_M4)
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+CONFIG_CLEAN_VPATH_FILES =
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+libcompat_la_LIBADD =
+am_libcompat_la_OBJECTS = compat-dirname.lo compat-basename.lo \
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+	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+	$(LDFLAGS) -o $@
+SOURCES = $(libcompat_la_SOURCES)
+DIST_SOURCES = $(libcompat_la_SOURCES)
+ETAGS = etags
+CTAGS = ctags
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+ACLOCAL = @ACLOCAL@
+AMTAR = @AMTAR@
+AR = @AR@
+AS = @AS@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+CC = @CC@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+DLLTOOL = @DLLTOOL@
+DL_LIBS = @DL_LIBS@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
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+GREP = @GREP@
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+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+IPROUTE = @IPROUTE@
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+LDFLAGS = @LDFLAGS@
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+LIBPAM_CFLAGS = @LIBPAM_CFLAGS@
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+OPENSSL_CRYPTO_CFLAGS = @OPENSSL_CRYPTO_CFLAGS@
+OPENSSL_CRYPTO_LIBS = @OPENSSL_CRYPTO_LIBS@
+OPENSSL_SSL_CFLAGS = @OPENSSL_SSL_CFLAGS@
+OPENSSL_SSL_LIBS = @OPENSSL_SSL_LIBS@
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+OPTIONAL_CRYPTO_LIBS = @OPTIONAL_CRYPTO_LIBS@
+OPTIONAL_DL_LIBS = @OPTIONAL_DL_LIBS@
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+OPTIONAL_PKCS11_HELPER_LIBS = @OPTIONAL_PKCS11_HELPER_LIBS@
+OPTIONAL_SELINUX_LIBS = @OPTIONAL_SELINUX_LIBS@
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+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
+PLUGIN_AUTH_PAM_CFLAGS = @PLUGIN_AUTH_PAM_CFLAGS@
+PLUGIN_AUTH_PAM_LIBS = @PLUGIN_AUTH_PAM_LIBS@
+POLARSSL_CFLAGS = @POLARSSL_CFLAGS@
+POLARSSL_LIBS = @POLARSSL_LIBS@
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+	compat.vcxproj \
+	compat.vcxproj.filters
+
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+	compat.h \
+	compat-stdbool.h \
+	compat-dirname.c \
+	compat-basename.c \
+	compat-gettimeofday.c \
+	compat-daemon.c \
+	compat-inet_ntop.c \
+	compat-inet_pton.c
+
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+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:
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES ctags distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am 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-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 uninstall uninstall-am
+
+
+# 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/src/compat/compat-basename.c b/src/compat/compat-basename.c
new file mode 100644
index 0000000..a057691
--- /dev/null
+++ b/src/compat/compat-basename.c
@@ -0,0 +1,50 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#ifndef HAVE_BASENAME
+
+#include "compat.h"
+#include <string.h>
+
+/* Modified version based on glibc-2.14.1 by Roland McGrath <roland@gnu.org>
+ * This version is extended to handle both / and \ in path names
+ */
+char *
+basename (char *filename)
+{
+  char *p = strrchr (filename, '/');
+  if (!p) {
+    /* If NULL, check for \ instead ... might be Windows a path */
+    p = strrchr (filename, '\\');
+  }
+  return p ? p + 1 : (char *) filename;
+}
+
+#endif /* HAVE_BASENAME */
diff --git a/src/compat/compat-daemon.c b/src/compat/compat-daemon.c
new file mode 100644
index 0000000..dde96a2
--- /dev/null
+++ b/src/compat/compat-daemon.c
@@ -0,0 +1,100 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#ifndef HAVE_DAEMON
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+int
+daemon(int nochdir, int noclose)
+{
+#if defined(HAVE_FORK) && defined(HAVE_SETSID)
+	switch (fork()) {
+		case -1:
+			return (-1);
+		case 0:
+		break;
+		default:
+			exit(0);
+	}
+
+	if (setsid() == -1)
+		return (-1);
+
+	if (!nochdir)
+		chdir("/");
+
+	if (!noclose) {
+#if defined(HAVE_DUP) && defined(HAVE_DUP2)
+		int fd;
+		if ((fd = open ("/dev/null", O_RDWR, 0)) != -1) {
+			dup2 (fd, 0);
+			dup2 (fd, 1);
+			dup2 (fd, 2);
+			if (fd > 2) {
+				close (fd);
+			}
+		}
+#endif
+	}
+
+	return 0;
+#else
+	(void)nochdir;
+	(void)noclose;
+	errno = EFAULT;
+	return -1;
+#endif
+}
+
+#endif
+
diff --git a/src/compat/compat-dirname.c b/src/compat/compat-dirname.c
new file mode 100644
index 0000000..8878595
--- /dev/null
+++ b/src/compat/compat-dirname.c
@@ -0,0 +1,119 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+
+#ifndef HAVE_DIRNAME
+
+#include "compat.h"
+#include <string.h>
+
+/* Unoptimised version of glibc memrchr().
+ * This is considered fast enough, as only this compat
+ * version of dirname() depends on it.
+ */
+static const char *
+__memrchr(const char *str, int c, size_t n)
+{
+  const char *end = str;
+
+  end += n - 1; /* Go to the end of the string */
+  while (end >= str) {
+    if(c == *end)
+      return end;
+    else
+      end--;
+  }
+  return NULL;
+}
+
+/* Modified version based on glibc-2.14.1 by Ulrich Drepper <drepper@akkadia.org>
+ * This version is extended to handle both / and \ in path names.
+ */
+char *
+dirname (char *path)
+{
+  static const char dot[] = ".";
+  char *last_slash;
+  char separator = '/';
+
+  /* Find last '/'.  */
+  last_slash = path != NULL ? strrchr (path, '/') : NULL;
+  /* If NULL, check for \ instead ... might be Windows a path */
+  if (!last_slash) {
+    last_slash = path != NULL ? strrchr (path, '\\') : NULL;
+    separator = last_slash ? '\\' : '/';  /* Change the separator if \ was found */
+  }
+
+  if (last_slash != NULL && last_slash != path && last_slash[1] == '\0') {
+      /* Determine whether all remaining characters are slashes.  */
+      char *runp;
+
+      for (runp = last_slash; runp != path; --runp)
+	if (runp[-1] != separator)
+	  break;
+
+      /* The '/' is the last character, we have to look further.  */
+      if (runp != path)
+	last_slash = (char *) __memrchr (path, separator, runp - path);
+    }
+
+  if (last_slash != NULL) {
+      /* Determine whether all remaining characters are slashes.  */
+      char *runp;
+
+      for (runp = last_slash; runp != path; --runp)
+	if (runp[-1] != separator)
+	  break;
+
+      /* Terminate the path.  */
+      if (runp == path) {
+	  /* The last slash is the first character in the string.  We have to
+	     return "/".  As a special case we have to return "//" if there
+	     are exactly two slashes at the beginning of the string.  See
+	     XBD 4.10 Path Name Resolution for more information.  */
+	  if (last_slash == path + 1)
+	    ++last_slash;
+	  else
+	    last_slash = path + 1;
+	}
+      else
+	last_slash = runp;
+
+      last_slash[0] = '\0';
+  } else
+    /* This assignment is ill-designed but the XPG specs require to
+       return a string containing "." in any case no directory part is
+       found and so a static and constant string is required.  */
+    path = (char *) dot;
+
+  return path;
+}
+
+#endif /* HAVE_DIRNAME */
diff --git a/src/compat/compat-gettimeofday.c b/src/compat/compat-gettimeofday.c
new file mode 100644
index 0000000..0f32d5d
--- /dev/null
+++ b/src/compat/compat-gettimeofday.c
@@ -0,0 +1,131 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#ifndef HAVE_GETTIMEOFDAY
+
+#include "compat.h"
+
+#ifdef WIN32
+/*
+ * NOTICE: mingw has much faster gettimeofday!
+ * autoconf will set HAVE_GETTIMEOFDAY
+ */
+
+#include <windows.h>
+#include <time.h>
+
+static time_t gtc_base = 0;
+static DWORD gtc_last = 0;
+static time_t last_sec = 0;
+static unsigned int last_msec = 0;
+static int bt_last = 0;
+
+static void
+gettimeofday_calibrate (void)
+{
+  const time_t t = time(NULL);
+  const DWORD gtc = GetTickCount();
+  gtc_base = t - gtc/1000;
+  gtc_last = gtc;
+}
+
+/*
+ * Rewritten by JY for OpenVPN 2.1, after I realized that
+ * QueryPerformanceCounter takes nearly 2 orders of magnitude
+ * more processor cycles than GetTickCount.
+ */
+int
+gettimeofday (struct timeval *tv, void *tz)
+{
+  const DWORD gtc = GetTickCount();
+  int bt = 0;
+  time_t sec;
+  unsigned int msec;
+  const int backtrack_hold_seconds = 10;
+
+  (void)tz;
+
+  /* recalibrate at the dreaded 49.7 day mark */
+  if (!gtc_base || gtc < gtc_last)
+    gettimeofday_calibrate ();
+  gtc_last = gtc;
+
+  sec = gtc_base + gtc / 1000;
+  msec = gtc % 1000;
+
+  if (sec == last_sec)
+    {
+      if (msec < last_msec)
+	{
+	  msec = last_msec;
+	  bt = 1;
+	}
+    }
+  else if (sec < last_sec)
+    {
+      /* We try to dampen out backtracks of less than backtrack_hold_seconds.
+	 Larger backtracks will be passed through and dealt with by the
+	 TIME_BACKTRACK_PROTECTION code (if enabled) */
+      if (sec > last_sec - backtrack_hold_seconds)
+	{
+	  sec = last_sec;
+	  msec = last_msec;
+	}
+      bt = 1;
+    }
+
+  tv->tv_sec = (long)last_sec = (long)sec;
+  tv->tv_usec = (last_msec = msec) * 1000;
+
+  if (bt && !bt_last)
+    gettimeofday_calibrate ();
+  bt_last = bt;
+
+  return 0;
+}
+
+#else
+
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+
+int
+gettimeofday (struct timeval *tv, void *tz)
+{
+	(void)tz;
+	tv->tv_sec = time(NULL);
+	tv->tv_usec = 0;
+	return 0;
+}
+
+#endif /* WIN32 */
+
+#endif /* HAVE_GETTIMEOFDAY */
diff --git a/src/compat/compat-inet_ntop.c b/src/compat/compat-inet_ntop.c
new file mode 100644
index 0000000..0d52142
--- /dev/null
+++ b/src/compat/compat-inet_ntop.c
@@ -0,0 +1,76 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#ifndef HAVE_INET_NTOP
+
+#include "compat.h"
+
+#ifdef WIN32
+
+#include <windows.h>
+
+/*
+ * inet_ntop() and inet_pton() wrap-implementations using
+ * WSAAddressToString() and WSAStringToAddress() functions
+ *
+ * this is needed as long as we support running OpenVPN on WinXP
+ */
+
+const char *
+inet_ntop(int af, const void *src, char *dst, socklen_t size)
+{
+  struct sockaddr_storage ss;
+  unsigned long s = size;
+
+  ZeroMemory(&ss, sizeof(ss));
+  ss.ss_family = af;
+
+  switch(af) {
+    case AF_INET:
+      ((struct sockaddr_in *)&ss)->sin_addr = *(struct in_addr *)src;
+      break;
+    case AF_INET6:
+      ((struct sockaddr_in6 *)&ss)->sin6_addr = *(struct in6_addr *)src;
+      break;
+    default:
+      return NULL;
+  }
+  /* cannot direclty use &size because of strict aliasing rules */
+  return (WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst, &s) == 0)?
+          dst : NULL;
+}
+
+#else
+
+#error no emulation for inet_ntop
+
+#endif
+
+#endif
diff --git a/src/compat/compat-inet_pton.c b/src/compat/compat-inet_pton.c
new file mode 100644
index 0000000..cdc8d4b
--- /dev/null
+++ b/src/compat/compat-inet_pton.c
@@ -0,0 +1,79 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#elif defined(_MSC_VER)
+#include "config-msvc.h"
+#endif
+
+#ifndef HAVE_INET_PTON
+
+#include "compat.h"
+
+#ifdef WIN32
+
+#include <windows.h>
+#include <string.h>
+
+/*
+ * inet_ntop() and inet_pton() wrap-implementations using
+ * WSAAddressToString() and WSAStringToAddress() functions
+ *
+ * this is needed as long as we support running OpenVPN on WinXP
+ */
+
+
+int
+inet_pton(int af, const char *src, void *dst)
+{
+  struct sockaddr_storage ss;
+  int size = sizeof(ss);
+  char src_copy[INET6_ADDRSTRLEN+1];
+
+  ZeroMemory(&ss, sizeof(ss));
+  /* stupid non-const API */
+  strncpy (src_copy, src, INET6_ADDRSTRLEN+1);
+  src_copy[INET6_ADDRSTRLEN] = 0;
+
+  if (WSAStringToAddress(src_copy, af, NULL, (struct sockaddr *)&ss, &size) == 0) {
+    switch(af) {
+      case AF_INET:
+	*(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr;
+	return 1;
+      case AF_INET6:
+	*(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr;
+	return 1;
+    }
+  }
+  return 0;
+}
+
+#else
+
+#error no emulation for inet_ntop
+
+#endif
+
+#endif
diff --git a/src/compat/compat-stdbool.h b/src/compat/compat-stdbool.h
new file mode 100644
index 0000000..9941218
--- /dev/null
+++ b/src/compat/compat-stdbool.h
@@ -0,0 +1,12 @@
+#ifndef __COMPAT_STDBOOL_H
+#define __COMPAT_STDBOOL_H
+
+#ifdef HAVE_STDBOOL_H
+#include <stdbool.h>
+#else
+typedef int bool;
+#define false 0
+#define true 1
+#endif
+
+#endif
diff --git a/src/compat/compat.h b/src/compat/compat.h
new file mode 100644
index 0000000..021573e
--- /dev/null
+++ b/src/compat/compat.h
@@ -0,0 +1,68 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2011 - David Sommerseth <davids@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  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 (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef COMPAT_H
+#define COMPAT_H
+
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif
+
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#ifndef HAVE_DIRNAME
+char * dirname(char *str);
+#endif /* HAVE_DIRNAME */
+
+#ifndef HAVE_BASENAME
+char * basename(char *str);
+#endif /* HAVE_BASENAME */
+
+#ifndef HAVE_GETTIMEOFDAY
+int gettimeofday (struct timeval *tv, void *tz);
+#endif
+
+#ifndef HAVE_DAEMON
+int daemon(int nochdir, int noclose);
+#endif
+
+#ifndef HAVE_INET_NTOP
+const char * inet_ntop(int af, const void *src, char *dst, socklen_t size);
+#endif
+
+#ifndef HAVE_INET_PTON
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
+#endif /* COMPAT_H */
diff --git a/src/compat/compat.vcxproj b/src/compat/compat.vcxproj
new file mode 100644
index 0000000..42979c1
--- /dev/null
+++ b/src/compat/compat.vcxproj
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{4B2E2719-E661-45D7-9203-F6F456B22F19}</ProjectGuid>
+    <RootNamespace>compat</RootNamespace>
+    <Keyword>Win32Proj</Keyword>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(SolutionDir)$(Platform)-Output\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\</IntDir>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)$(Platform)-Output\$(Configuration)\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>$(SOURCEBASE);$(SOURCEBASE)/include;$(OPENSSL_HOME)/include;$(LZO_HOME)/include;$(PKCS11H_HOME)/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;$(CPPFLAGS);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <MinimalRebuild>true</MinimalRebuild>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <AdditionalIncludeDirectories>$(SOURCEBASE);$(SOURCEBASE)/include;$(OPENSSL_HOME)/include;$(LZO_HOME)/include;$(PKCS11H_HOME)/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;$(CPPFLAGS);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="compat-basename.c" />
+    <ClCompile Include="compat-dirname.c" />
+    <ClCompile Include="compat-gettimeofday.c" />
+    <ClCompile Include="compat-inet_ntop.c" />
+    <ClCompile Include="compat-inet_pton.c" />
+    <ClCompile Include="compat-daemon.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="compat.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/src/compat/compat.vcxproj.filters b/src/compat/compat.vcxproj.filters
new file mode 100644
index 0000000..00bb0ff
--- /dev/null
+++ b/src/compat/compat.vcxproj.filters
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="compat-basename.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="compat-dirname.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="compat-gettimeofday.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="compat-inet_ntop.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="compat-inet_pton.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="compat-daemon.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="compat.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
\ No newline at end of file