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/* version_info.c
 * Routines to report version information for stuff used by Wireshark
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <glib.h>

#include <stdlib.h>
#include <string.h>
#include <errno.h>

#ifdef HAVE_LIBZ
#include <zlib.h>	/* to get the libz version number */
#endif

#ifdef HAVE_LIBPCRE
#include <pcre.h>	/* to get the libpcre version number */
#endif /* HAVE_LIBPCRE */

#ifdef HAVE_SOME_SNMP

#ifdef HAVE_NET_SNMP
#include <net-snmp/version.h>
#endif /* HAVE_NET_SNMP */

#ifdef HAVE_UCD_SNMP
#include <ucd-snmp/version.h>
#endif /* HAVE_UCD_SNMP */

#endif /* HAVE_SOME_SNMP */

#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif

#include "version_info.h"
#include "capture-pcap-util.h"

#include "svnversion.h"

#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif

#ifdef HAVE_LUA
#include <lua.h>
#endif

#ifdef SVNVERSION
	const char *svnversion = " (" SVNVERSION ")";
#else
	const char *svnversion = "";
#endif

/*
 * See whether the last line in the string goes past column 80; if so,
 * replace the blank at the specified point with a newline.
 */
static void
do_word_wrap(GString *str, gint point)
{
	char *line_begin;

	line_begin = strrchr(str->str, '\n');
	if (line_begin == NULL)
		line_begin = str->str;
	else
		line_begin++;
	if (strlen(line_begin) > 80) {
		g_assert(str->str[point] == ' ');
		str->str[point] = '\n';
	}
}	

/*
 * If the string doesn't end with a newline, append one.
 */
static void
end_string(GString *str)
{
	size_t point;

	point = strlen(str->str);
	if (point == 0 || str->str[point - 1] != '\n')
		g_string_append(str, "\n");
}	

/*
 * Get various library compile-time versions and append them to
 * the specified GString.
 */
void
get_compiled_version_info(GString *str)
{
	gint break_point;

	g_string_append(str, "with ");
	g_string_sprintfa(str,
#ifdef GLIB_MAJOR_VERSION
	    "GLib %d.%d.%d,", GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION,
	    GLIB_MICRO_VERSION);
#else
	    "GLib (version unknown),");
#endif

	g_string_append(str, " ");
	break_point = str->len - 1;
	get_compiled_pcap_version(str);
	g_string_append(str, ",");
	do_word_wrap(str, break_point);

	g_string_append(str, " ");
	break_point = str->len - 1;
#ifdef HAVE_LIBZ
	g_string_append(str, "with libz ");
#ifdef ZLIB_VERSION
	g_string_append(str, ZLIB_VERSION);
#else /* ZLIB_VERSION */
	g_string_append(str, "(version unknown)");
#endif /* ZLIB_VERSION */
#else /* HAVE_LIBZ */
	g_string_append(str, "without libz");
#endif /* HAVE_LIBZ */
	g_string_append(str, ",");
	do_word_wrap(str, break_point);

	g_string_append(str, " ");
	break_point = str->len - 1;
#ifdef HAVE_LIBPCRE
	g_string_append(str, "with libpcre ");
#ifdef PCRE_MAJOR
#ifdef PCRE_MINOR
	g_string_sprintfa(str, "%u.%u", PCRE_MAJOR, PCRE_MINOR);
#else			/* PCRE_MINOR */
	g_string_sprintfa(str, "%u", PCRE_MAJOR);
#endif			/* PCRE_MINOR */
#else		/* PCRE_MAJOR */
	g_string_append(str, "(version unknown)");
#endif		/* PCRE_MAJOR */
#else	/* HAVE_LIBPCRE */
	g_string_append(str, "without libpcre");
#endif	/* HAVE_LIBPCRE */

	g_string_append(str, ",");
	do_word_wrap(str, break_point);

/* Oh, this is pretty. */
/* Oh, ha.  you think that was pretty.  Try this:! --Wes */
	g_string_append(str, " ");
	break_point = str->len - 1;
#ifdef HAVE_SOME_SNMP

#ifdef HAVE_UCD_SNMP
	g_string_append(str, "with UCD-SNMP ");
	g_string_append(str, VersionInfo);
#endif /* HAVE_UCD_SNMP */

#ifdef HAVE_NET_SNMP
	g_string_append(str, "with Net-SNMP ");
	g_string_append(str, netsnmp_get_version());
#endif /* HAVE_NET_SNMP */

#else /* no SNMP library */
	g_string_append(str, "without UCD-SNMP or Net-SNMP");
#endif /* HAVE_SOME_SNMP */
	g_string_append(str, ",");
	do_word_wrap(str, break_point);

	g_string_append(str, " ");
	break_point = str->len - 1;
#ifdef HAVE_GNU_ADNS
	g_string_append(str, "with ADNS");
#else
	g_string_append(str, "without ADNS");
#endif /* HAVE_GNU_ADNS */
	g_string_append(str, ",");

	g_string_append(str, " ");
	break_point = str->len - 1;
#ifdef HAVE_LUA
	g_string_append(str, "with ");
	g_string_append(str, LUA_VERSION);
#else
	g_string_append(str, "without Lua");
#endif /* HAVE_LUA */

	g_string_append(str, ".");
	do_word_wrap(str, break_point);

#ifndef HAVE_LIBPCRE
	break_point = str->len - 1;
	g_string_append(str,
			"\nNOTE: this build doesn't support the \"matches\" operator for Wireshark filter"
			"\nsyntax.");
	do_word_wrap(str, break_point);
#endif	/* HAVE_LIBPCRE */

	end_string(str);
}

/*
 * Get various library run-time versions, and the OS version, and append
 * them to the specified GString.
 */
void
get_runtime_version_info(GString *str)
{
#if defined(_WIN32)
	OSVERSIONINFO info;
#elif defined(HAVE_SYS_UTSNAME_H)
	struct utsname name;
#endif

	get_runtime_pcap_version(str);

	g_string_append(str, "on ");
#if defined(_WIN32)
	/*
	 * See
	 *
	 *	http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getting_the_system_version.asp
	 *
	 * for more than you ever wanted to know about determining the
	 * flavor of Windows on which you're running.  Implementing more
	 * of that is left as an exercise to the reader - who should
	 * check any copyright information about code samples on MSDN
	 * before cutting and pasting into Ethereal.
	 *
	 * They should also note that you need an OSVERSIONINFOEX structure
	 * to get some of that information, and that not only is that
	 * structure not supported on older versions of Windows, you might
	 * not even be able to compile code that *uses* that structure with
	 * older versions of the SDK.
	 */
	info.dwOSVersionInfoSize = sizeof info;
	if (!GetVersionEx(&info)) {
		/*
		 * XXX - get the failure reason.
		 */
		g_string_append(str, "unknown Windows version");
		return;
	}
	switch (info.dwPlatformId) {

	case VER_PLATFORM_WIN32s:
		/* Shyeah, right. */
		g_string_sprintfa(str, "Windows 3.1 with Win32s");
		break;

	case VER_PLATFORM_WIN32_WINDOWS:
		/* Windows OT */
		switch (info.dwMajorVersion) {

		case 4:
			/* 3 cheers for Microsoft marketing! */
			switch (info.dwMinorVersion) {

			case 0:
				g_string_sprintfa(str, "Windows 95");
				break;

			case 10:
				g_string_sprintfa(str, "Windows 98");
				break;

			case 90:
				g_string_sprintfa(str, "Windows Me");
				break;

			default:
				g_string_sprintfa(str, "Windows OT, unknown version %lu.%lu",
				    info.dwMajorVersion, info.dwMinorVersion);
				break;
			}
			break;

		default:
			g_string_sprintfa(str, "Windows OT, unknown version %lu.%lu",
			    info.dwMajorVersion, info.dwMinorVersion);
			break;
		}
		break;

	case VER_PLATFORM_WIN32_NT:
		/* Windows NT */
		switch (info.dwMajorVersion) {

		case 3:
		case 4:
			g_string_sprintfa(str, "Windows NT %lu.%lu",
			    info.dwMajorVersion, info.dwMinorVersion);
			break;

		case 5:
			/* 3 cheers for Microsoft marketing! */
			switch (info.dwMinorVersion) {

			case 0:
				g_string_sprintfa(str, "Windows 2000");
				break;

			case 1:
				g_string_sprintfa(str, "Windows XP");
				break;

			case 2:
				g_string_sprintfa(str, "Windows Server 2003");
				break;

			default:
				g_string_sprintfa(str, "Windows NT, unknown version %lu.%lu",
				    info.dwMajorVersion, info.dwMinorVersion);
				break;
			}
			break;

		case 6:
			g_string_sprintfa(str, "Windows Vista");
			break;

		default:
			g_string_sprintfa(str, "Windows NT, unknown version %lu.%lu",
			    info.dwMajorVersion, info.dwMinorVersion);
			break;
		}
		break;

	default:
		g_string_sprintfa(str, "Unknown Windows platform %lu version %lu.%lu",
		    info.dwPlatformId, info.dwMajorVersion, info.dwMinorVersion);
		break;
	}
	if (info.szCSDVersion[0] != '\0')
		g_string_sprintfa(str, " %s", info.szCSDVersion);
	g_string_sprintfa(str, ", build %lu", info.dwBuildNumber);
#elif defined(HAVE_SYS_UTSNAME_H)
	/*
	 * We have <sys/utsname.h>, so we assume we have "uname()".
	 */
	if (uname(&name) < 0) {
		g_string_sprintfa(str, "unknown OS version (uname failed - %s)",
		    strerror(errno));
		return;
	}

	if (strcmp(name.sysname, "AIX") == 0) {
		/*
		 * Yay, IBM!  Thanks for doing something different
		 * from most of the other UNIXes out there, and
		 * making "name.version" apparently be the major
		 * version number and "name.release" be the minor
		 * version number.
		 */
		g_string_sprintfa(str, "%s %s.%s", name.sysname, name.version,
		    name.release);
	} else {
		/*
		 * XXX - get "version" on any other platforms?
		 *
		 * On Digital/Tru65 UNIX, it's something unknown.
		 * On Solaris, it's some kind of build information.
		 * On HP-UX, it appears to be some sort of subrevision
		 * thing.
		 */
		g_string_sprintfa(str, "%s %s", name.sysname, name.release);
	}
#else
	g_string_append(str, "an unknown OS");
#endif
	g_string_append(str, ".");

	end_string(str);
}

/*
 * Get copyright information.
 */
const char *
get_copyright_info(void)
{
	return
"Copyright 1998-2006 Gerald Combs <gerald@wireshark.org> and contributors.\n"
"This is free software; see the source for copying conditions. There is NO\n"
"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
}