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/*
* killev.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include <config.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <gio/gio.h>
#include <glib/gi18n.h>
#include <libedataserver/libedataserver.h>
/* Seconds to wait after asking Evolution to terminate gracefully.
* If the process has not terminated before the timeout expires,
* then we get violent. */
#define EVOLUTION_SHUTDOWN_TIMEOUT 5
static GPid evolution_pid;
static GMainLoop *main_loop;
static void
file_monitor_changed_cb (GFileMonitor *monitor,
GFile *file,
GFile *not_used,
GFileMonitorEvent event_type)
{
if (event_type != G_FILE_MONITOR_EVENT_DELETED)
return;
g_print ("Evolution process exited normally\n");
g_main_loop_quit (main_loop);
}
static gboolean
evolution_not_responding_cb (void)
{
g_print ("No response from Evolution -- killing the process\n");
/* Kill the process. */
kill ((pid_t) evolution_pid, SIGTERM);
g_main_loop_quit (main_loop);
return FALSE;
}
static gboolean
get_evolution_pid (GFile *file)
{
gint64 v_int64;
gchar *contents = NULL;
gboolean success = FALSE;
/* Try to read Evolution's PID from its .running file. */
if (!g_file_load_contents (file, NULL, &contents, NULL, NULL, NULL))
goto exit;
/* Try to extract an integer value from the string. */
v_int64 = g_ascii_strtoll (contents, NULL, 10);
if (!(v_int64 > 0 && v_int64 < G_MAXINT64))
goto exit;
/* XXX Probably not portable. */
evolution_pid = (GPid) v_int64;
success = TRUE;
exit:
g_free (contents);
return success;
}
gint
main (gint argc,
gchar **argv)
{
GFile *pid_file;
GFileMonitor *monitor;
const gchar *user_config_dir;
gchar *filename;
gint retval = EXIT_SUCCESS;
GError *error = NULL;
bindtextdomain (GETTEXT_PACKAGE, EVOLUTION_LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
user_config_dir = e_get_user_config_dir ();
filename = g_build_filename (user_config_dir, ".running", NULL);
pid_file = g_file_new_for_path (filename);
g_free (filename);
if (!get_evolution_pid (pid_file)) {
g_printerr ("Could not find Evolution's process ID\n");
retval = EXIT_FAILURE;
goto kill;
}
if (g_getenv ("DISPLAY") == NULL)
goto kill;
/* Play it safe here and bail if something goes wrong. We don't
* want to just skip to the killing if we can't ask Evolution to
* terminate gracefully. Despite our name we actually want to
* -avoid- killing Evolution if at all possible. */
if (!g_spawn_command_line_async ("evolution --quit", &error)) {
g_printerr ("%s\n", error->message);
g_error_free (error);
retval = EXIT_FAILURE;
goto kill;
}
/* Now we set up a monitor on Evolution's .running file.
* If Evolution is still responsive it will delete this
* file just before terminating and we'll be notified. */
monitor = g_file_monitor_file (pid_file, 0, NULL, &error);
if (error != NULL) {
g_printerr ("%s\n", error->message);
g_error_free (error);
retval = EXIT_FAILURE;
goto kill;
}
g_signal_connect (
monitor, "changed",
G_CALLBACK (file_monitor_changed_cb), NULL);
g_timeout_add_seconds (
EVOLUTION_SHUTDOWN_TIMEOUT, (GSourceFunc)
evolution_not_responding_cb, NULL);
/* Start the clock. */
main_loop = g_main_loop_new (NULL, TRUE);
g_main_loop_run (main_loop);
g_main_loop_unref (main_loop);
g_object_unref (monitor);
kill:
#ifdef KILL_PROCESS_CMD
system (KILL_PROCESS_CMD " -QUIT evolution 2> /dev/null");
#else
g_printerr ("No \"kill\" command available.\n");
#endif
return retval;
}
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