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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* main.c
 *
 * Copyright (C) 2000, 2001, 2002, 2003  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License 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; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: Ettore Perazzoli
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-util/e-dialog-utils.h"
#include "e-util/e-gtk-utils.h"
#include "e-util/e-bconf-map.h"
#include "e-util/e-passwords.h"

#include <e-util/e-icon-factory.h>
#include "e-shell-constants.h"

#include "e-shell.h"
#include "es-menu.h"

#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/tree.h>

#include <gconf/gconf-client.h>

#include <gtk/gtkalignment.h>
#include <gtk/gtkvbox.h>
#include <gtk/gtkframe.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkmain.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkwindow.h>
#include <gtk/gtkdialog.h>
#include <gtk/gtkstock.h>

#include <gdk/gdkx.h>
#include <X11/Xlib.h>

#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
#include <libgnome/gnome-sound.h>
#include <libgnomeui/gnome-ui-init.h>

#include <bonobo/bonobo-main.h>
#include <bonobo/bonobo-moniker-util.h>
#include <bonobo/bonobo-exception.h>

#include <bonobo-activation/bonobo-activation.h>

#include <glade/glade.h>

#include "e-config-upgrade.h"
#include "Evolution-DataServer.h"

#include <gal/widgets/e-cursors.h>
#include "widgets/misc/e-error.h"

#include <fcntl.h>
#include <signal.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

#include <pthread.h>

#include "e-util/e-plugin.h"
#ifdef ENABLE_MONO
#include "e-util/e-plugin-mono.h"
#endif

#ifndef DEVELOPMENT
#define DEVELOPMENT (1)
#endif

static EShell *shell = NULL;

/* Command-line options.  */
static gboolean start_online = FALSE;
static gboolean start_offline = FALSE;
static gboolean setup_only = FALSE;
static gboolean killev = FALSE;
#ifdef DEVELOPMENT
static gboolean force_migrate = FALSE;
#endif
#ifdef ENABLE_MONO
static gboolean disable_mono = FALSE;
#endif
static gboolean disable_eplugin = FALSE;

static gint idle_cb (void *data);

static char *default_component_id = NULL;
static char *evolution_debug_log = NULL;

static void
no_windows_left_cb (EShell *shell, gpointer data)
{
    bonobo_object_unref (BONOBO_OBJECT (shell));
    bonobo_main_quit ();
}

static void
shell_weak_notify (void *data,
           GObject *where_the_object_was)
{
    bonobo_main_quit ();
}


#ifdef KILL_PROCESS_CMD

static void
kill_dataserver (void)
{
    g_message ("Killing old version of evolution-data-server...");

    system (KILL_PROCESS_CMD " -9 lt-evolution-data-server 2> /dev/null");
    system (KILL_PROCESS_CMD " -9 evolution-data-server-1.0 2> /dev/null");

    system (KILL_PROCESS_CMD " -9 lt-evolution-alarm-notify 2> /dev/null");
    system (KILL_PROCESS_CMD " -9 evolution-alarm-notify 2> /dev/null");
}

static void
kill_old_dataserver (void)
{
    GNOME_Evolution_DataServer_InterfaceCheck iface;
    CORBA_Environment ev;
    CORBA_char *version;

    CORBA_exception_init (&ev);

    /* FIXME Should we really kill it off?  We also shouldn't hard code the version */
    iface = bonobo_activation_activate_from_id ("OAFIID:GNOME_Evolution_DataServer_InterfaceCheck", 0, NULL, &ev);
    if (BONOBO_EX (&ev) || iface == CORBA_OBJECT_NIL) {
        kill_dataserver ();
        CORBA_exception_free (&ev);
        return;
    }

    version = GNOME_Evolution_DataServer_InterfaceCheck__get_interfaceVersion (iface, &ev);
    if (BONOBO_EX (&ev)) {
        kill_dataserver ();
        CORBA_Object_release (iface, &ev);
        CORBA_exception_free (&ev);
        return;
    }

    if (strcmp (version, DATASERVER_VERSION) != 0) {
        CORBA_free (version);
        kill_dataserver ();
        CORBA_Object_release (iface, &ev);
        CORBA_exception_free (&ev);
        return;
    }

    CORBA_free (version);
    CORBA_Object_release (iface, &ev);
    CORBA_exception_free (&ev);
}
#endif


#ifdef DEVELOPMENT

/* Warning dialog to scare people off a little bit.  */

static void
warning_dialog_response_callback (GtkDialog *dialog,
                 int button_number,
                 void *data)
{
    GtkCheckButton *dont_bother_me_again_checkbox;
    GConfClient *client;

    dont_bother_me_again_checkbox = GTK_CHECK_BUTTON (data);

    client = gconf_client_get_default ();
    gconf_client_set_bool (client, "/apps/evolution/shell/skip_warning_dialog",
                   gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dont_bother_me_again_checkbox)),
                   NULL);
    g_object_unref (client);

    gtk_widget_destroy (GTK_WIDGET (dialog));

    idle_cb(NULL);
}

static void
show_development_warning(void)
{
    GtkWidget *vbox;
    GtkWidget *label;
    GtkWidget *warning_dialog;
    GtkWidget *dont_bother_me_again_checkbox;
    GtkWidget *alignment;
    char *text;

    warning_dialog = gtk_dialog_new ();
    gtk_window_set_title (GTK_WINDOW (warning_dialog), "Evolution " VERSION);
    gtk_window_set_modal (GTK_WINDOW (warning_dialog), TRUE);
    gtk_dialog_add_button (GTK_DIALOG (warning_dialog), GTK_STOCK_OK, GTK_RESPONSE_OK);

    gtk_dialog_set_has_separator (GTK_DIALOG (warning_dialog), FALSE);

    gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (warning_dialog)->vbox), 0);
    gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (warning_dialog)->action_area), 12);

    vbox = gtk_vbox_new (FALSE, 12);
    gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (warning_dialog)->vbox), vbox,
                TRUE, TRUE, 0);

    text = g_strdup_printf(
        /* xgettext:no-c-format */
        /* Preview/Alpha/Beta version warning message */
        _("Hi.  Thanks for taking the time to download this preview release\n"
          "of the Evolution groupware suite.\n"
          "\n"
          "This version of Evolution is not yet complete. It is getting close,\n"
          "but some features are either unfinished or do not work properly.\n"
          "\n"
          "If you want a stable version of Evolution, we urge you to uninstall\n"
          "this version, and install version %s instead.\n"
          "\n"
          "If you find bugs, please report them to us at bugzilla.ximian.com.\n"
                  "This product comes with no warranty and is not intended for\n"
          "individuals prone to violent fits of anger.\n"
                  "\n"
          "We hope that you enjoy the results of our hard work, and we\n"
          "eagerly await your contributions!\n"),
        "1.4");
    label = gtk_label_new (text);
    g_free(text);

    gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
    gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.0);

    gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);

    label = gtk_label_new (_("Thanks\n"
                 "The Evolution Team\n"));
    gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_RIGHT);
    gtk_misc_set_alignment(GTK_MISC(label), 1, .5);

    gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);

    dont_bother_me_again_checkbox = gtk_check_button_new_with_label (_("Don't tell me again"));

    alignment = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);

    gtk_container_add (GTK_CONTAINER (alignment), dont_bother_me_again_checkbox);
    gtk_box_pack_start (GTK_BOX (vbox), alignment, TRUE, TRUE, 0);

    gtk_widget_show_all (warning_dialog);

    g_signal_connect (warning_dialog, "response",
              G_CALLBACK (warning_dialog_response_callback),
              dont_bother_me_again_checkbox);
}

static void
destroy_config (void)
{
    GConfClient *gconf;
    
    gconf = gconf_client_get_default ();

    /* Unset the source stuff */
    gconf_client_unset (gconf, "/apps/evolution/calendar/sources", NULL);
    gconf_client_unset (gconf, "/apps/evolution/tasks/sources", NULL);
    gconf_client_unset (gconf, "/apps/evolution/addressbook/sources", NULL);
    gconf_client_unset (gconf, "/apps/evolution/addressbook/sources", NULL);

    /* Reset the version */
    gconf_client_set_string (gconf, "/apps/evolution/version", "1.4.0", NULL);

    /* Clear the dir */
    system ("rm -Rf ~/.evolution");
    
    g_object_unref (gconf);
}

#endif /* DEVELOPMENT */

static void
open_uris (GNOME_Evolution_Shell corba_shell, GSList *uri_list)
{
    GSList *p;
    CORBA_Environment ev;

    CORBA_exception_init (&ev);

    for (p = uri_list; p != NULL; p = p->next) {
        const char *uri;

        uri = (const char *) p->data;
        GNOME_Evolution_Shell_handleURI (corba_shell, uri, &ev);
        if (ev._major != CORBA_NO_EXCEPTION) {
            g_warning ("Invalid URI: %s", uri);
            CORBA_exception_free (&ev);
        }
    }

    CORBA_exception_free (&ev);
}

/* This is for doing stuff that requires the GTK+ loop to be running already.  */

static gint
idle_cb (void *data)
{
    GSList *uri_list;
    GNOME_Evolution_Shell corba_shell;
    CORBA_Environment ev;
    EShellConstructResult result;
    EShellStartupLineMode startup_line_mode;
    gboolean have_evolution_uri;

#ifdef KILL_PROCESS_CMD
    kill_old_dataserver ();
#endif

    CORBA_exception_init (&ev);

    uri_list = (GSList *) data;

    if (! start_online && ! start_offline)
        startup_line_mode = E_SHELL_STARTUP_LINE_MODE_CONFIG;
    else if (start_online)
        startup_line_mode = E_SHELL_STARTUP_LINE_MODE_ONLINE;
    else
        startup_line_mode = E_SHELL_STARTUP_LINE_MODE_OFFLINE;

    shell = e_shell_new (startup_line_mode, &result);

    switch (result) {
    case E_SHELL_CONSTRUCT_RESULT_OK:
        g_signal_connect (shell, "no_windows_left", G_CALLBACK (no_windows_left_cb), NULL);
        g_object_weak_ref (G_OBJECT (shell), shell_weak_notify, NULL);
        corba_shell = bonobo_object_corba_objref (BONOBO_OBJECT (shell));
        corba_shell = CORBA_Object_duplicate (corba_shell, &ev);
        break;

    case E_SHELL_CONSTRUCT_RESULT_CANNOTREGISTER:
        corba_shell = bonobo_activation_activate_from_id (E_SHELL_OAFIID, 0, NULL, &ev);
        if (ev._major != CORBA_NO_EXCEPTION || corba_shell == CORBA_OBJECT_NIL) {
            e_error_run(NULL, "shell:noshell", NULL);
            CORBA_exception_free (&ev);
            bonobo_main_quit ();
            return FALSE;
        }
        break;

    default:
        e_error_run(NULL, "shell:noshell-reason",
                e_shell_construct_result_to_string(result), NULL);
        CORBA_exception_free (&ev);
        bonobo_main_quit ();
        return FALSE;

    }

    have_evolution_uri = FALSE;

    if (shell != NULL) {
        e_shell_create_window (shell, default_component_id, NULL);
        open_uris (corba_shell, uri_list);
    } else {
        CORBA_Environment ev;

        CORBA_exception_init (&ev);
        if (uri_list != NULL)
            open_uris (corba_shell, uri_list);
        else
            if (default_component_id == NULL)
                GNOME_Evolution_Shell_createNewWindow (corba_shell, "", &ev);
            else
                GNOME_Evolution_Shell_createNewWindow (corba_shell, default_component_id, &ev);

        CORBA_exception_free (&ev);
    }

    g_slist_free (uri_list);

    CORBA_Object_release (corba_shell, &ev);

    CORBA_exception_free (&ev);
    
    if (shell == NULL)
        bonobo_main_quit ();

    return FALSE;
}


/* SIGSEGV handling.
   
   The GNOME SEGV handler will lose if it's not run from the main Gtk
   thread. So if we have to redirect the signal if the crash happens in another
   thread.  */

static void (*gnome_segv_handler) (int);
static GStaticMutex segv_mutex = G_STATIC_MUTEX_INIT;
static pthread_t main_thread;

static void
segv_redirect (int sig)
{
    if (pthread_self () == main_thread)
        gnome_segv_handler (sig);
    else {
        pthread_kill (main_thread, sig);

        /* We can't return from the signal handler or the thread may
           SEGV again. But we can't pthread_exit, because then the
           thread may get cleaned up before bug-buddy can get a stack
           trace. So we block by trying to lock a mutex we know is
           already locked.  */
        g_static_mutex_lock (&segv_mutex);
    }
}

static void
setup_segv_redirect (void)
{
    struct sigaction sa, osa;

    sigaction (SIGSEGV, NULL, &osa);
    if (osa.sa_handler == SIG_DFL)
        return;

    main_thread = pthread_self ();

    sa.sa_flags = 0;
    sigemptyset (&sa.sa_mask);
    sa.sa_handler = segv_redirect;
    sigaction (SIGSEGV, &sa, NULL);
    sigaction (SIGBUS, &sa, NULL);
    sigaction (SIGFPE, &sa, NULL);
        
    sa.sa_handler = SIG_IGN;
    sigaction (SIGXFSZ, &sa, NULL);
    gnome_segv_handler = osa.sa_handler;
    g_static_mutex_lock (&segv_mutex);
}

int
main (int argc, char **argv)
{
    struct poptOption options[] = {
        { "component", 'c', POPT_ARG_STRING, &default_component_id, 0,
          N_("Start Evolution activating the specified component"), NULL },
        { "offline", '\0', POPT_ARG_NONE, &start_offline, 0, 
          N_("Start in offline mode"), NULL },
        { "online", '\0', POPT_ARG_NONE, &start_online, 0, 
          N_("Start in online mode"), NULL },
#ifdef KILL_PROCESS_CMD
        { "force-shutdown", '\0', POPT_ARG_NONE, &killev, 0, 
          N_("Forcibly shut down all Evolution components"), NULL },
#endif
#ifdef DEVELOPMENT
        { "force-migrate", '\0', POPT_ARG_NONE, &force_migrate, 0, 
          N_("Forcibly re-migrate from Evolution 1.4"), NULL },
#endif
        { "debug", '\0', POPT_ARG_STRING, &evolution_debug_log, 0, 
          N_("Send the debugging output of all components to a file."), NULL },
#ifdef ENABLE_MONO
        { "disable-mono", '\0', POPT_ARG_NONE, &disable_mono, 0, 
          N_("Disable the mono plugin environment."), NULL },
#endif
        { "disable-eplugin", '\0', POPT_ARG_NONE, &disable_eplugin, 0, 
          N_("Disable loading of any plugins."), NULL },
        { "setup-only", '\0', POPT_ARG_NONE | POPT_ARGFLAG_DOC_HIDDEN,
          &setup_only, 0, NULL, NULL },
        { NULL, '\0', 0, NULL, 0, NULL, NULL }
    };
#ifdef DEVELOPMENT
    GConfClient *client;
    gboolean skip_warning_dialog;
#endif
    GSList *uri_list;
    GValue popt_context_value = { 0, };
    GnomeProgram *program;
    poptContext popt_context;
    const char **args;
    char *evolution_directory;
    GList *icon_list;

    /* Make ElectricFence work.  */
    free (malloc (10));

    bindtextdomain (GETTEXT_PACKAGE, EVOLUTION_LOCALEDIR);
    bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
    textdomain (GETTEXT_PACKAGE);

    program = gnome_program_init (PACKAGE "-" BASE_VERSION, VERSION, LIBGNOMEUI_MODULE, argc, argv, 
                      GNOME_PROGRAM_STANDARD_PROPERTIES,
                      GNOME_PARAM_POPT_TABLE, options,
                      GNOME_PARAM_HUMAN_READABLE_NAME, _("Evolution"),
                      NULL);

    if (start_online && start_offline) {
        fprintf (stderr, _("%s: --online and --offline cannot be used together.\n  Use %s --help for more information.\n"),
             argv[0], argv[0]);
        exit (1);
    }

    if (killev) {
        execl (EVOLUTION_TOOLSDIR "/killev", "killev", NULL);
        /* Not reached */
        exit (0);
    }

#ifdef DEVELOPMENT
    if (force_migrate) {
        destroy_config ();
    }
#endif
    
    setup_segv_redirect ();
    
    if (evolution_debug_log) {
        int fd;

        fd = open (evolution_debug_log, O_WRONLY | O_CREAT | O_TRUNC, 0600);
        if (fd) {
            dup2 (fd, STDOUT_FILENO);
            dup2 (fd, STDERR_FILENO);
            close (fd);
        } else
            g_warning ("Could not set up debugging output file.");
    }

    glade_init ();
    e_cursors_init ();
    e_icon_factory_init ();
    e_passwords_init();

    icon_list = e_icon_factory_get_icon_list ("stock_mail");
    if (icon_list) {
        gtk_window_set_default_icon_list (icon_list);
        g_list_foreach (icon_list, (GFunc) g_object_unref, NULL);
        g_list_free (icon_list);
    }

    /* FIXME We shouldn't be using the old directory at all I think */
    evolution_directory = g_build_filename (g_get_home_dir (), "evolution", NULL);
    if (setup_only)
        exit (0);

    g_free (evolution_directory);

    uri_list = NULL;

    g_value_init (&popt_context_value, G_TYPE_POINTER);
    g_object_get_property (G_OBJECT (program), GNOME_PARAM_POPT_CONTEXT, &popt_context_value);
    popt_context = g_value_get_pointer (&popt_context_value);
    args = poptGetArgs (popt_context);
    if (args != NULL) {
        const char **p;

        for (p = args; *p != NULL; p++)
            uri_list = g_slist_prepend (uri_list, (char *) *p);
    }
    uri_list = g_slist_reverse (uri_list);
    g_value_unset (&popt_context_value);

    gnome_sound_init ("localhost");

    if (!disable_eplugin) {
#ifdef ENABLE_MONO
        if (!disable_mono && getenv("EVOLUTION_DISABLE_MONO") == NULL)
            e_plugin_register_type(e_plugin_mono_get_type());
#endif
        e_plugin_register_type(e_plugin_lib_get_type());
        e_plugin_hook_register_type(es_menu_hook_get_type());
        e_plugin_hook_register_type(es_event_hook_get_type());
        e_plugin_load_plugins();
    }

#ifdef DEVELOPMENT
    client = gconf_client_get_default ();
    skip_warning_dialog = gconf_client_get_bool (client, "/apps/evolution/shell/skip_warning_dialog", NULL);
    g_object_unref (client);

    if (!skip_warning_dialog && !getenv ("EVOLVE_ME_HARDER"))
        show_development_warning();
    else
#endif
        g_idle_add (idle_cb, uri_list); 
    
    bonobo_main ();
    
    e_icon_factory_shutdown ();
    g_object_unref (program);
    gnome_sound_shutdown ();
    e_cursors_shutdown ();
    
    return 0;
}