path: root/plugins/backup-restore/backup.c

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

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/wait.h>

#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <libgnome/gnome-util.h>

#define EVOLUTION "evolution"
#define EVOLUTION_DIR "~/.evolution/"
#define EVOLUTION_DIR_BACKUP "~/.evolution-old/"
#define GCONF_DUMP_FILE "backup-restore-gconf.xml"
#define GCONF_DUMP_PATH EVOLUTION_DIR GCONF_DUMP_FILE
#define GCONF_DIR "/apps/evolution"
#define ARCHIVE_NAME "evolution-backup.tar.gz"

static gboolean backup_op = FALSE;
static char *bk_file;
static gboolean restore_op = FALSE;
static char *res_file;
static gboolean check_op = FALSE;
static char *chk_file;
static gboolean restart_arg = FALSE;
static gboolean gui_arg = FALSE;
static gchar **opt_remaining = NULL;
static int result=0;
static GtkWidget *progress_dialog;
static GtkWidget *pbar;
static char *txt = NULL;
gboolean complete = FALSE;

static const GOptionEntry options[] = {
    { "backup", '\0', 0, G_OPTION_ARG_NONE, &backup_op,
      N_("Backup Evolution directory"), NULL },
    { "restore", '\0', 0, G_OPTION_ARG_NONE, &restore_op,
      N_("Restore Evolution directory"), NULL },
    { "check", '\0', 0, G_OPTION_ARG_NONE, &check_op,
      N_("Check Evolution Backup"), NULL },
    { "restart", '\0', 0, G_OPTION_ARG_NONE, &restart_arg,
      N_("Restart Evolution"), NULL },
    { "gui", '\0', 0, G_OPTION_ARG_NONE, &gui_arg,
      N_("With Graphical User Interface"), NULL },
    { G_OPTION_REMAINING, '\0', 0,
      G_OPTION_ARG_STRING_ARRAY, &opt_remaining },
    { NULL }
};

#define d(x) x

/* #define s(x) system (x) */
#define s(x) G_STMT_START { g_message (x); system (x); } G_STMT_END

#define CANCEL(x) if (x) return;

static void
backup (const char *filename) 
{
    char *command;

    CANCEL (complete);
    txt = _("Shutting down Evolution");
    /* FIXME Will the versioned setting always work? */
    s (EVOLUTION " --force-shutdown");

    CANCEL (complete);
    txt = _("Backing Evolution accounts and settings");
    s ("gconftool-2 --dump " GCONF_DIR " > " GCONF_DUMP_PATH);


    CANCEL (complete);
    txt = _("Backing Evolution data (Mails, Contacts, Calendar, Tasks, Memos)");

    /* FIXME stay on this file system ,other options?" */
    /* FIXME compression type?" */
    /* FIXME date/time stamp?" */
    /* FIXME backup location?" */
    command = g_strdup_printf ("cd ~ && tar zpcf %s .evolution .camel_certs", filename);
    s (command);
    g_free (command);

    txt = _("Backup complete");

    if (restart_arg) {

        CANCEL (complete);
        txt = _("Restarting Evolution");
        complete=TRUE;
        
        s (EVOLUTION);
    }

}

static void
restore (const char *filename) 
{
    char *command;
    
    /* FIXME Will the versioned setting always work? */
    CANCEL (complete);
    txt = _("Shutting down Evolution");
    s (EVOLUTION " --force-shutdown");

    CANCEL (complete);
    txt = _("Backup current Evolution data");
    s ("mv " EVOLUTION_DIR " " EVOLUTION_DIR_BACKUP);
    s ("mv ~/.camel_certs ~/.camel_certs_old");

    CANCEL (complete);
    txt = _("Extracting files from backup");
    command = g_strdup_printf ("cd ~ && tar zxf %s", filename);
    s (command);
    g_free (command);

    CANCEL (complete);
    txt = _("Loading Evolution settings");
    s ("gconftool-2 --load " GCONF_DUMP_PATH);

    CANCEL (complete);
    txt = _("Removing temporary backup files");
    s ("rm -rf " GCONF_DUMP_PATH);
    s ("rm -rf " EVOLUTION_DIR_BACKUP);
    s ("rm -rf ~/.camel_certs_old");
    
    if (restart_arg) {
        CANCEL (complete);
        txt = _("Restarting Evolution");
        complete=TRUE;
        s (EVOLUTION);
    }

}

static void
check (const char *filename) 
{
    char *command;

    command = g_strdup_printf ("tar ztf %s | grep -e \"^\\.evolution/$\"", filename);
    result = system (command);
    g_free (command);
    
    g_message ("First result %d", result);
    if (result)
        exit (result);

    command = g_strdup_printf ("tar ztf %s | grep -e \"^\\.evolution/%s$\"", filename, GCONF_DUMP_FILE);
    result = system (command);
    g_free (command);

    g_message ("Second result %d", result);

}

static gboolean 
pbar_update()
{
    if (!complete) {
         gtk_progress_bar_pulse ((GtkProgressBar *)pbar);
         gtk_progress_bar_set_text ((GtkProgressBar *)pbar, txt);
        return TRUE;
    }

    gtk_main_quit ();
    return FALSE;
}

static gpointer 
thread_start (gpointer data)
{
    if (backup_op)
        backup (bk_file);
    else if (restore_op)
        restore (res_file);
    else if (check_op)
        check (chk_file);

    complete = TRUE;
    
    return GINT_TO_POINTER(result);
}

static gboolean 
idle_cb(gpointer data)
{
    GThread *t;

    if (gui_arg) {
        /* Show progress dialog */
         gtk_progress_bar_pulse ((GtkProgressBar *)pbar);
        g_timeout_add (50, pbar_update, NULL);
    }

    t = g_thread_create (thread_start, NULL, FALSE, NULL);

    return FALSE;
}

static void
dlg_response (GtkWidget *dlg, gint response, gpointer data)
{
    /* We will cancel only backup/restore operations and not the check operation */
    complete = TRUE;
    
    /* If the response is not of delete_event then destroy the event */
    if (response != GTK_RESPONSE_NONE)
        gtk_widget_destroy (dlg);
    
    /* We will kill just the tar operation. Rest of the them will be just a second of microseconds.*/
    s ("pkill tar");

    gtk_main_quit ();
}

int
main (int argc, char **argv)
{
    GnomeProgram *program;
    GOptionContext *context;
    char *file = NULL, *oper = NULL;
    gint i;

    gtk_init (&argc, &argv);
    bindtextdomain (GETTEXT_PACKAGE, EVOLUTION_LOCALEDIR);
    bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
    textdomain (GETTEXT_PACKAGE);

    context = g_option_context_new (NULL);
    g_option_context_add_main_entries (context, options, GETTEXT_PACKAGE);
    program = gnome_program_init (PACKAGE, VERSION, LIBGNOME_MODULE, argc, argv, 
                      GNOME_PROGRAM_STANDARD_PROPERTIES,
                      GNOME_PARAM_GOPTION_CONTEXT, context,
                      GNOME_PARAM_NONE);


    for (i = 0; i < g_strv_length (opt_remaining); i++) {
        if (backup_op) {
            oper = _("Backing up to the folder %s");
            d(g_message ("Backing up to the folder %s", (char *) opt_remaining[i]));
            bk_file = g_strdup ((char *) opt_remaining[i]);
            file = bk_file;
        } else if (restore_op) {
            oper = _("Restoring from the folder %s");
            d(g_message ("Restoring from the folder %s", (char *) opt_remaining[i]));
            res_file = g_strdup ((char *) opt_remaining[i]);
            file = res_file;
        } else if (check_op) {
            d(g_message ("Checking %s", (char *) opt_remaining[i]));
            chk_file = g_strdup ((char *) opt_remaining[i]);
        }
    }

    if (gui_arg) {
        GtkWidget *vbox, *hbox, *label;
        char *str=NULL;

        /* Backup / Restore only can have GUI. We should restrict the rest */
        progress_dialog = gtk_dialog_new_with_buttons (backup_op ? _("Evolution Backup"): _("Evolution Restore"),
                                                      NULL,
                                                      GTK_DIALOG_MODAL,
                                                      GTK_STOCK_CANCEL,
                                                      GTK_RESPONSE_REJECT,
                                                      NULL);
        if (oper && file) 
            str = g_strdup_printf(oper, file);
    
        vbox = gtk_vbox_new (FALSE, 6);
        if (str) {
            hbox = gtk_hbox_new (FALSE, 12);
            label = gtk_label_new (str);
            g_free (str);
            gtk_box_pack_start ((GtkBox *)hbox, label, FALSE, FALSE, 6);
            gtk_box_pack_start ((GtkBox *)vbox, hbox, FALSE, FALSE, 6);
        }
        hbox = gtk_hbox_new (FALSE, 12);
        pbar = gtk_progress_bar_new ();
        gtk_box_pack_start ((GtkBox *)hbox, pbar, TRUE, TRUE, 6);



        gtk_box_pack_start ((GtkBox *)vbox, hbox, FALSE, FALSE, 0);
        
        gtk_container_add (GTK_CONTAINER (GTK_DIALOG(progress_dialog)->vbox), vbox);
        gtk_window_set_default_size ((GtkWindow *) progress_dialog,450, 120);
        g_signal_connect (progress_dialog, "response", G_CALLBACK(dlg_response), NULL);
        gtk_widget_show_all (progress_dialog);
    } else if (check_op) {
         /* For sanity we don't need gui */
         check (chk_file);
         exit (result);
    }

    g_idle_add (idle_cb, NULL);
    gtk_main ();
    
    return result;
}