pidgin/gtkmain.c

/*
 * pidgin
 *
 * Pidgin is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
 *
 */

#include "internal.h"
#include "pidgin.h"

#include "account.h"
#include "conversation.h"
#include "core.h"
#include "dbus-maybe.h"
#include "debug.h"
#include "eventloop.h"
#include "ft.h"
#include "log.h"
#include "network.h"
#include "notify.h"
#include "prefs.h"
#include "prpl.h"
#include "pounce.h"
#include "sound.h"
#include "status.h"
#include "util.h"
#include "whiteboard.h"

#include "gtkaccount.h"
#include "gtkblist.h"
#include "gtkconn.h"
#include "gtkconv.h"
#include "gtkdebug.h"
#include "gtkdialogs.h"
#include "gtkdocklet.h"
#include "gtkeventloop.h"
#include "gtkft.h"
#include "gtkidle.h"
#include "gtklog.h"
#include "gtkmedia.h"
#include "gtknotify.h"
#include "gtkplugin.h"
#include "gtkpounce.h"
#include "gtkprefs.h"
#include "gtkprivacy.h"
#include "gtkrequest.h"
#include "gtkroomlist.h"
#include "gtksavedstatuses.h"
#include "gtksession.h"
#include "gtksmiley.h"
#include "gtksound.h"
#include "gtkthemes.h"
#include "gtkutils.h"
#include "pidginstock.h"
#include "gtkwhiteboard.h"

#ifdef HAVE_SIGNAL_H
# include <signal.h>
#endif

#include <getopt.h>

#ifdef HAVE_STARTUP_NOTIFICATION
# define SN_API_NOT_YET_FROZEN
# include <libsn/sn-launchee.h>
# include <gdk/gdkx.h>
#endif


#ifdef HAVE_STARTUP_NOTIFICATION
static SnLauncheeContext *sn_context = NULL;
static SnDisplay *sn_display = NULL;
#endif

#ifdef HAVE_SIGNAL_H

/*
 * Lists of signals we wish to catch and those we wish to ignore.
 * Each list terminated with -1
 */
static const int catch_sig_list[] = {
	SIGSEGV,
	SIGHUP,
	SIGINT,
	SIGTERM,
	SIGQUIT,
	SIGCHLD,
#if defined(USE_GSTREAMER) && !defined(GST_CAN_DISABLE_FORKING)
	SIGALRM,
#endif
	-1
};

static const int ignore_sig_list[] = {
	SIGPIPE,
	-1
};
#endif

static void
dologin_named(const char *name)
{
	PurpleAccount *account;
	char **names;
	int i;

	if (name != NULL) { /* list of names given */
		names = g_strsplit(name, ",", 64);
		for (i = 0; names[i] != NULL; i++) {
			account = purple_accounts_find(names[i], NULL);
			if (account != NULL) { /* found a user */
				purple_account_set_enabled(account, PIDGIN_UI, TRUE);
			}
		}
		g_strfreev(names);
	} else { /* no name given, use the first account */
		GList *accounts;

		accounts = purple_accounts_get_all();
		if (accounts != NULL)
		{
			account = (PurpleAccount *)accounts->data;
			purple_account_set_enabled(account, PIDGIN_UI, TRUE);
		}
	}
}

#ifdef HAVE_SIGNAL_H
static void sighandler(int sig);

/*
 * This child process reaping stuff is currently only used for processes that
 * were forked to play sounds.  It's not needed for forked DNS child, which
 * have their own waitpid() call.  It might be wise to move this code into
 * gtksound.c.
 */
static void
clean_pid(void)
{
	int status;
	pid_t pid;

	do {
		pid = waitpid(-1, &status, WNOHANG);
	} while (pid != 0 && pid != (pid_t)-1);

	if ((pid == (pid_t) - 1) && (errno != ECHILD)) {
		char errmsg[BUFSIZ];
		snprintf(errmsg, BUFSIZ, "Warning: waitpid() returned %d", pid);
		perror(errmsg);
	}
}

char *segfault_message;

/*
 * This signal handler shouldn't be touching this much stuff.
 * It should just set a flag and return, and something else in
 * Pidgin should monitor the flag to see if something needs to
 * be done.  Because the signal handler interrupts the program,
 * it could be called in the middle of adding a new connection
 * to the list of connections, and then if we try to disconnect
 * all connections it could lead to a crash because the linked
 * list of connections could be in a weird state.  But, well,
 * this signal handler probably isn't called very often, so it's
 * not a big deal.
 */
static void
sighandler(int sig)
{
	switch (sig) {
	case SIGHUP:
		purple_debug_warning("sighandler", "Caught signal %d\n", sig);
		break;
	case SIGSEGV:
		fprintf(stderr, "%s", segfault_message);
		abort();
		break;
#if defined(USE_GSTREAMER) && !defined(GST_CAN_DISABLE_FORKING)
/* By default, gstreamer forks when you initialize it, and waitpids for the
 * child.  But if libpurple reaps the child rather than leaving it to
 * gstreamer, gstreamer's initialization fails.  So, we wait a second before
 * reaping child processes, to give gst a chance to reap it if it wants to.
 *
 * This is not needed in later gstreamers, which let us disable the forking.
 * And, it breaks the world on some Real Unices.
 */
	case SIGCHLD:
		/* Restore signal catching */
		signal(SIGCHLD, sighandler);
		alarm(1);
		break;
	case SIGALRM:
#else
	case SIGCHLD:
#endif
		clean_pid();
		/* Restore signal catching */
		signal(SIGCHLD, sighandler);
		break;
	default:
		purple_debug_warning("sighandler", "Caught signal %d\n", sig);
		purple_core_quit();
	}
}
#endif

static int
ui_main(void)
{
#ifndef _WIN32
	GList *icons = NULL;
	GdkPixbuf *icon = NULL;
	char *icon_path;
	int i;
	struct {
		const char *dir;
		const char *filename;
	} icon_sizes[] = {
		{"16x16", "pidgin.png"},
		{"24x24", "pidgin.png"},
		{"32x32", "pidgin.png"},
		{"48x48", "pidgin.png"},
		{"scalable", "pidgin.svg"}
	};

#endif

	pidgin_themes_init();

	pidgin_blist_setup_sort_methods();

#ifndef _WIN32
	/* use the nice PNG icon for all the windows */
	for(i=0; i<G_N_ELEMENTS(icon_sizes); i++) {
		icon_path = g_build_filename(DATADIR, "icons", "hicolor", icon_sizes[i].dir, "apps", icon_sizes[i].filename, NULL);
		icon = gdk_pixbuf_new_from_file(icon_path, NULL);
		g_free(icon_path);
		if (icon) {
			icons = g_list_append(icons,icon);
		} else {
			purple_debug_error("ui_main",
					"Failed to load the default window icon (%spx version)!\n", icon_sizes[i].dir);
		}
	}
	if(NULL == icons) {
		purple_debug_error("ui_main", "Unable to load any size of default window icon!\n");
	} else {
		gtk_window_set_default_icon_list(icons);

		g_list_foreach(icons, (GFunc)g_object_unref, NULL);
		g_list_free(icons);
	}
#endif

	return 0;
}

static void
debug_init(void)
{
	purple_debug_set_ui_ops(pidgin_debug_get_ui_ops());
	pidgin_debug_init();
}

static void
pidgin_ui_init(void)
{
	pidgin_stock_init();

	/* Set the UI operation structures. */
	purple_accounts_set_ui_ops(pidgin_accounts_get_ui_ops());
	purple_xfers_set_ui_ops(pidgin_xfers_get_ui_ops());
	purple_blist_set_ui_ops(pidgin_blist_get_ui_ops());
	purple_notify_set_ui_ops(pidgin_notify_get_ui_ops());
	purple_privacy_set_ui_ops(pidgin_privacy_get_ui_ops());
	purple_request_set_ui_ops(pidgin_request_get_ui_ops());
	purple_sound_set_ui_ops(pidgin_sound_get_ui_ops());
	purple_connections_set_ui_ops(pidgin_connections_get_ui_ops());
	purple_whiteboard_set_ui_ops(pidgin_whiteboard_get_ui_ops());
#if defined(USE_SCREENSAVER) || defined(HAVE_IOKIT)
	purple_idle_set_ui_ops(pidgin_idle_get_ui_ops());
#endif

	pidgin_account_init();
	pidgin_connection_init();
	pidgin_blist_init();
	pidgin_status_init();
	pidgin_conversations_init();
	pidgin_pounces_init();
	pidgin_privacy_init();
	pidgin_xfers_init();
	pidgin_roomlist_init();
	pidgin_log_init();
	pidgin_docklet_init();
	pidgin_smileys_init();
	pidgin_utils_init();
#ifdef USE_VV
	pidgin_medias_init();
#endif
}

static GHashTable *ui_info = NULL;

static void
pidgin_quit(void)
{
#ifdef USE_SM
	/* unplug */
	pidgin_session_end();
#endif

	/* Uninit */
	pidgin_utils_uninit();
	pidgin_smileys_uninit();
	pidgin_conversations_uninit();
	pidgin_status_uninit();
	pidgin_docklet_uninit();
	pidgin_blist_uninit();
	pidgin_connection_uninit();
	pidgin_account_uninit();
	pidgin_xfers_uninit();
	pidgin_debug_uninit();

	if(NULL != ui_info)
		g_hash_table_destroy(ui_info);

	/* and end it all... */
	gtk_main_quit();
}

static GHashTable *pidgin_ui_get_info(void)
{
	if(NULL == ui_info) {
		ui_info = g_hash_table_new(g_str_hash, g_str_equal);

		g_hash_table_insert(ui_info, "name", (char*)PIDGIN_NAME);
		g_hash_table_insert(ui_info, "version", VERSION);
		g_hash_table_insert(ui_info, "website", "http://pidgin.im");
		g_hash_table_insert(ui_info, "dev_website", "http://developer.pidgin.im");
	}

	return ui_info;
}

static PurpleCoreUiOps core_ops =
{
	pidgin_prefs_init,
	debug_init,
	pidgin_ui_init,
	pidgin_quit,
	pidgin_ui_get_info,
	NULL,
	NULL,
	NULL
};

static PurpleCoreUiOps *
pidgin_core_get_ui_ops(void)
{
	return &core_ops;
}

static void
show_usage(const char *name, gboolean terse)
{
	char *text;

	if (terse) {
		text = g_strdup_printf(_("%s %s. Try `%s -h' for more information.\n"), PIDGIN_NAME, DISPLAY_VERSION, name);
	} else {
#ifndef WIN32
		text = g_strdup_printf(_("%s %s\n"
		       "Usage: %s [OPTION]...\n\n"
		       "  -c, --config=DIR    use DIR for config files\n"
		       "  -d, --debug         print debugging messages to stdout\n"
		       "  -f, --force-online  force online, regardless of network status\n"
		       "  -h, --help          display this help and exit\n"
		       "  -m, --multiple      do not ensure single instance\n"
		       "  -n, --nologin       don't automatically login\n"
		       "  -l, --login[=NAME]  enable specified account(s) (optional argument NAME\n"
		       "                      specifies account(s) to use, separated by commas.\n"
		       "                      Without this only the first account will be enabled).\n"
		       "  --display=DISPLAY   X display to use\n"
		       "  -v, --version       display the current version and exit\n"), PIDGIN_NAME, DISPLAY_VERSION, name);
#else
		text = g_strdup_printf(_("%s %s\n"
		       "Usage: %s [OPTION]...\n\n"
		       "  -c, --config=DIR    use DIR for config files\n"
		       "  -d, --debug         print debugging messages to stdout\n"
		       "  -f, --force-online  force online, regardless of network status\n"
		       "  -h, --help          display this help and exit\n"
		       "  -m, --multiple      do not ensure single instance\n"
		       "  -n, --nologin       don't automatically login\n"
		       "  -l, --login[=NAME]  enable specified account(s) (optional argument NAME\n"
		       "                      specifies account(s) to use, separated by commas.\n"
		       "                      Without this only the first account will be enabled).\n"
		       "  -v, --version       display the current version and exit\n"), PIDGIN_NAME, DISPLAY_VERSION, name);
#endif
	}

	purple_print_utf8_to_console(stdout, text);
	g_free(text);
}

#ifdef HAVE_STARTUP_NOTIFICATION
static void
sn_error_trap_push(SnDisplay *display, Display *xdisplay)
{
	gdk_error_trap_push();
}

static void
sn_error_trap_pop(SnDisplay *display, Display *xdisplay)
{
	gdk_error_trap_pop();
}

static void
startup_notification_complete(void)
{
	Display *xdisplay;

	xdisplay = GDK_DISPLAY();
	sn_display = sn_display_new(xdisplay,
								sn_error_trap_push,
								sn_error_trap_pop);
	sn_context =
		sn_launchee_context_new_from_environment(sn_display,
												 DefaultScreen(xdisplay));

	if (sn_context != NULL)
	{
		sn_launchee_context_complete(sn_context);
		sn_launchee_context_unref(sn_context);

		sn_display_unref(sn_display);
	}
}
#endif /* HAVE_STARTUP_NOTIFICATION */

/* FUCKING GET ME A TOWEL! */
#ifdef _WIN32
/* suppress gcc "no previous prototype" warning */
int pidgin_main(HINSTANCE hint, int argc, char *argv[]);
int pidgin_main(HINSTANCE hint, int argc, char *argv[])
#else
int main(int argc, char *argv[])
#endif
{
	gboolean opt_force_online = FALSE;
	gboolean opt_help = FALSE;
	gboolean opt_login = FALSE;
	gboolean opt_nologin = FALSE;
	gboolean opt_nocrash = FALSE;
	gboolean opt_version = FALSE;
	gboolean opt_si = TRUE;     /* Check for single instance? */
	char *opt_config_dir_arg = NULL;
	char *opt_login_arg = NULL;
	char *opt_session_arg = NULL;
	char *search_path;
	GList *accounts;
#ifdef HAVE_SIGNAL_H
	int sig_indx;	/* for setting up signal catching */
	sigset_t sigset;
	RETSIGTYPE (*prev_sig_disp)(int);
	char errmsg[BUFSIZ];
#ifndef DEBUG
	char *segfault_message_tmp;
	GError *error = NULL;
#endif
#endif
	int opt;
	gboolean gui_check;
	gboolean debug_enabled;
	gboolean migration_failed = FALSE;
	GList *active_accounts;

	struct option long_options[] = {
		{"config",       required_argument, NULL, 'c'},
		{"debug",        no_argument,       NULL, 'd'},
		{"force-online", no_argument,       NULL, 'd'},
		{"help",         no_argument,       NULL, 'h'},
		{"login",        optional_argument, NULL, 'l'},
		{"multiple",     no_argument,       NULL, 'm'},
		{"nologin",      no_argument,       NULL, 'n'},
		{"nocrash",		 no_argument,	    NULL, 'x'},
		{"session",      required_argument, NULL, 's'},
		{"version",      no_argument,       NULL, 'v'},
		{"display",      required_argument, NULL, 'D'},
		{"sync",         no_argument,       NULL, 'S'},
		{0, 0, 0, 0}
	};

#ifdef DEBUG
	debug_enabled = TRUE;
#else
	debug_enabled = FALSE;
#endif

	/* Initialize GThread before calling any Glib or GTK+ functions. */
	g_thread_init(NULL);

#ifdef ENABLE_NLS
	bindtextdomain(PACKAGE, LOCALEDIR);
	bind_textdomain_codeset(PACKAGE, "UTF-8");
	textdomain(PACKAGE);
#endif

#ifdef HAVE_SETLOCALE
	/* Locale initialization is not complete here.  See gtk_init_check() */
	setlocale(LC_ALL, "");
#endif

#ifdef HAVE_SIGNAL_H

#ifndef DEBUG
		/* We translate this here in case the crash breaks gettext. */
		segfault_message_tmp = g_strdup_printf(_(
			"%s %s has segfaulted and attempted to dump a core file.\n"
			"This is a bug in the software and has happened through\n"
			"no fault of your own.\n\n"
			"If you can reproduce the crash, please notify the developers\n"
			"by reporting a bug at:\n"
			"%ssimpleticket/\n\n"
			"Please make sure to specify what you were doing at the time\n"
			"and post the backtrace from the core file.  If you do not know\n"
			"how to get the backtrace, please read the instructions at\n"
			"%swiki/GetABacktrace\n"),
			PIDGIN_NAME, DISPLAY_VERSION, PURPLE_DEVEL_WEBSITE, PURPLE_DEVEL_WEBSITE
		);

		/* we have to convert the message (UTF-8 to console
		   charset) early because after a segmentation fault
		   it's not a good practice to allocate memory */
		segfault_message = g_locale_from_utf8(segfault_message_tmp,
						      -1, NULL, NULL, &error);
		if (segfault_message != NULL) {
			g_free(segfault_message_tmp);
		}
		else {
			/* use 'segfault_message_tmp' (UTF-8) as a fallback */
			g_warning("%s\n", error->message);
			g_error_free(error);
			segfault_message = segfault_message_tmp;
		}
#else
		/* Don't mark this for translation. */
		segfault_message = g_strdup(
			"Hi, user.  We need to talk.\n"
			"I think something's gone wrong here.  It's probably my fault.\n"
			"No, really, it's not you... it's me... no no no, I think we get along well\n"
			"it's just that.... well, I want to see other people.  I... what?!?  NO!  I \n"
			"haven't been cheating on you!!  How many times do you want me to tell you?!  And\n"
			"for the last time, it's just a rash!\n"
		);
#endif

	/* Let's not violate any PLA's!!!! */
	/* jseymour: whatever the fsck that means */
	/* Robot101: for some reason things like gdm like to block     *
	 * useful signals like SIGCHLD, so we unblock all the ones we  *
	 * declare a handler for. thanks JSeymour and Vann.            */
	if (sigemptyset(&sigset)) {
		snprintf(errmsg, BUFSIZ, "Warning: couldn't initialise empty signal set");
		perror(errmsg);
	}
	for(sig_indx = 0; catch_sig_list[sig_indx] != -1; ++sig_indx) {
		if((prev_sig_disp = signal(catch_sig_list[sig_indx], sighandler)) == SIG_ERR) {
			snprintf(errmsg, BUFSIZ, "Warning: couldn't set signal %d for catching",
				catch_sig_list[sig_indx]);
			perror(errmsg);
		}
		if(sigaddset(&sigset, catch_sig_list[sig_indx])) {
			snprintf(errmsg, BUFSIZ, "Warning: couldn't include signal %d for unblocking",
				catch_sig_list[sig_indx]);
			perror(errmsg);
		}
	}
	for(sig_indx = 0; ignore_sig_list[sig_indx] != -1; ++sig_indx) {
		if((prev_sig_disp = signal(ignore_sig_list[sig_indx], SIG_IGN)) == SIG_ERR) {
			snprintf(errmsg, BUFSIZ, "Warning: couldn't set signal %d to ignore",
				ignore_sig_list[sig_indx]);
			perror(errmsg);
		}
	}

	if (sigprocmask(SIG_UNBLOCK, &sigset, NULL)) {
		snprintf(errmsg, BUFSIZ, "Warning: couldn't unblock signals");
		perror(errmsg);
	}
#endif

	/* scan command-line options */
	opterr = 1;
	while ((opt = getopt_long(argc, argv,
#ifndef _WIN32
				  "c:dfhmnl::s:v",
#else
				  "c:dfhmnl::v",
#endif
				  long_options, NULL)) != -1) {
		switch (opt) {
		case 'c':	/* config dir */
			g_free(opt_config_dir_arg);
			opt_config_dir_arg = g_strdup(optarg);
			break;
		case 'd':	/* debug */
			debug_enabled = TRUE;
			break;
		case 'f':	/* force-online */
			opt_force_online = TRUE;
			break;
		case 'h':	/* help */
			opt_help = TRUE;
			break;
		case 'n':	/* no autologin */
			opt_nologin = TRUE;
			break;
		case 'l':	/* login, option username */
			opt_login = TRUE;
			g_free(opt_login_arg);
			if (optarg != NULL)
				opt_login_arg = g_strdup(optarg);
			break;
		case 's':	/* use existing session ID */
			g_free(opt_session_arg);
			opt_session_arg = g_strdup(optarg);
			break;
		case 'v':	/* version */
			opt_version = TRUE;
			break;
		case 'm':   /* do not ensure single instance. */
			opt_si = FALSE;
			break;
		case 'x':   /* --nocrash */
			opt_nocrash = TRUE;
			break;
		case 'D':   /* --display */
		case 'S':   /* --sync */
			/* handled by gtk_init_check below */
			break;
		case '?':	/* show terse help */
		default:
			show_usage(argv[0], TRUE);
#ifdef HAVE_SIGNAL_H
			g_free(segfault_message);
#endif
			return 0;
			break;
		}
	}

	/* show help message */
	if (opt_help) {
		show_usage(argv[0], FALSE);
#ifdef HAVE_SIGNAL_H
		g_free(segfault_message);
#endif
		return 0;
	}
	/* show version message */
	if (opt_version) {
		printf("%s %s (libpurple %s)\n", PIDGIN_NAME, DISPLAY_VERSION,
		                                 purple_core_get_version());
#ifdef HAVE_SIGNAL_H
		g_free(segfault_message);
#endif
		return 0;
	}

	/* set a user-specified config directory */
	if (opt_config_dir_arg != NULL) {
		purple_util_set_user_dir(opt_config_dir_arg);
	}

	/*
	 * We're done piddling around with command line arguments.
	 * Fire up this baby.
	 */

	purple_debug_set_enabled(debug_enabled);

	/* If we're using a custom configuration directory, we
	 * do NOT want to migrate, or weird things will happen. */
	if (opt_config_dir_arg == NULL)
	{
		if (!purple_core_migrate())
		{
			migration_failed = TRUE;
		}
	}

	search_path = g_build_filename(purple_user_dir(), "gtkrc-2.0", NULL);
	gtk_rc_add_default_file(search_path);
	g_free(search_path);

	gui_check = gtk_init_check(&argc, &argv);
	if (!gui_check) {
		char *display = gdk_get_display();

		printf("%s %s\n", PIDGIN_NAME, DISPLAY_VERSION);

		g_warning("cannot open display: %s", display ? display : "unset");
		g_free(display);
#ifdef HAVE_SIGNAL_H
		g_free(segfault_message);
#endif

		return 1;
	}

#if GLIB_CHECK_VERSION(2,2,0)
	g_set_application_name(_("Pidgin"));
#endif /* glib-2.0 >= 2.2.0 */

#ifdef _WIN32
	winpidgin_init(hint);
#endif

	if (migration_failed)
	{
		char *old = g_strconcat(purple_home_dir(),
		                        G_DIR_SEPARATOR_S ".gaim", NULL);
		const char *text = _(
			"%s encountered errors migrating your settings "
			"from %s to %s. Please investigate and complete the "
			"migration by hand. Please report this error at http://developer.pidgin.im");
		GtkWidget *dialog;

		dialog = gtk_message_dialog_new(NULL,
		                                0,
		                                GTK_MESSAGE_ERROR,
		                                GTK_BUTTONS_CLOSE,
		                                text, PIDGIN_NAME,
		                                old, purple_user_dir());
		g_free(old);

		g_signal_connect_swapped(dialog, "response",
		                         G_CALLBACK(gtk_main_quit), NULL);

		gtk_widget_show_all(dialog);

		gtk_main();

#ifdef HAVE_SIGNAL_H
		g_free(segfault_message);
#endif
		return 0;
	}

	purple_core_set_ui_ops(pidgin_core_get_ui_ops());
	purple_eventloop_set_ui_ops(pidgin_eventloop_get_ui_ops());

	/*
	 * Set plugin search directories. Give priority to the plugins
	 * in user's home directory.
	 */
	search_path = g_build_filename(purple_user_dir(), "plugins", NULL);
	purple_plugins_add_search_path(search_path);
	g_free(search_path);
	purple_plugins_add_search_path(LIBDIR);

	if (!purple_core_init(PIDGIN_UI)) {
		fprintf(stderr,
				"Initialization of the libpurple core failed. Dumping core.\n"
				"Please report this!\n");
#ifdef HAVE_SIGNAL_H
		g_free(segfault_message);
#endif
		abort();
	}

	if (opt_si && !purple_core_ensure_single_instance()) {
#ifdef HAVE_DBUS
		DBusConnection *conn = purple_dbus_get_connection();
		DBusMessage *message = dbus_message_new_method_call(DBUS_SERVICE_PURPLE, DBUS_PATH_PURPLE,
				DBUS_INTERFACE_PURPLE, "PurpleBlistSetVisible");
		gboolean tr = TRUE;
		dbus_message_append_args(message, DBUS_TYPE_UINT32, &tr, DBUS_TYPE_INVALID);
		dbus_connection_send_with_reply_and_block(conn, message, -1, NULL);
		dbus_message_unref(message);
#endif
		purple_core_quit();
		g_printerr(_("Exiting because another libpurple client is already running.\n"));
#ifdef HAVE_SIGNAL_H
		g_free(segfault_message);
#endif
		return 0;
	}

	/* TODO: Move blist loading into purple_blist_init() */
	purple_set_blist(purple_blist_new());
	purple_blist_load();

	/* load plugins we had when we quit */
	purple_plugins_load_saved(PIDGIN_PREFS_ROOT "/plugins/loaded");

	/* TODO: Move pounces loading into purple_pounces_init() */
	purple_pounces_load();

	ui_main();

#ifdef USE_SM
	pidgin_session_init(argv[0], opt_session_arg, opt_config_dir_arg);
#endif
	if (opt_session_arg != NULL) {
		g_free(opt_session_arg);
		opt_session_arg = NULL;
	}
	if (opt_config_dir_arg != NULL) {
		g_free(opt_config_dir_arg);
		opt_config_dir_arg = NULL;
	}

	/* This needs to be before purple_blist_show() so the
	 * statusbox gets the forced online status. */
	if (opt_force_online)
		purple_network_force_online();

	/*
	 * We want to show the blist early in the init process so the
	 * user feels warm and fuzzy (not cold and prickley).
	 */
	purple_blist_show();

	if (purple_prefs_get_bool(PIDGIN_PREFS_ROOT "/debug/enabled"))
		pidgin_debug_window_show();

	if (opt_login) {
		/* disable all accounts */
		for (accounts = purple_accounts_get_all(); accounts != NULL; accounts = accounts->next) {
			PurpleAccount *account = accounts->data;
			purple_account_set_enabled(account, PIDGIN_UI, FALSE);
		}
		/* honor the startup status preference */
		if (!purple_prefs_get_bool("/purple/savedstatus/startup_current_status"))
			purple_savedstatus_activate(purple_savedstatus_get_startup());
		/* now enable the requested ones */
		dologin_named(opt_login_arg);
		if (opt_login_arg != NULL) {
			g_free(opt_login_arg);
			opt_login_arg = NULL;
		}
	} else if (opt_nologin)	{
		/* Set all accounts to "offline" */
		PurpleSavedStatus *saved_status;

		/* If we've used this type+message before, lookup the transient status */
		saved_status = purple_savedstatus_find_transient_by_type_and_message(
							PURPLE_STATUS_OFFLINE, NULL);

		/* If this type+message is unique then create a new transient saved status */
		if (saved_status == NULL)
			saved_status = purple_savedstatus_new(NULL, PURPLE_STATUS_OFFLINE);

		/* Set the status for each account */
		purple_savedstatus_activate(saved_status);
	} else {
		/* Everything is good to go--sign on already */
		if (!purple_prefs_get_bool("/purple/savedstatus/startup_current_status"))
			purple_savedstatus_activate(purple_savedstatus_get_startup());
		purple_accounts_restore_current_statuses();
	}

	if ((active_accounts = purple_accounts_get_all_active()) == NULL)
	{
		pidgin_accounts_window_show();
	}
	else
	{
		g_list_free(active_accounts);
	}

#ifdef HAVE_STARTUP_NOTIFICATION
	startup_notification_complete();
#endif

#ifdef _WIN32
	winpidgin_post_init();
#endif

	gtk_main();

#ifdef HAVE_SIGNAL_H
	g_free(segfault_message);
#endif

#ifdef _WIN32
	winpidgin_cleanup();
#endif

	return 0;
}