/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * gsm-util.c * Copyright (C) 2008 Lucas Rocha. * * 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 * Lesser 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "gsm-util.h" static gchar *_saved_session_dir = NULL; char * gsm_util_find_desktop_file_for_app_name (const char *name, char **autostart_dirs) { char *app_path; char **app_dirs; GKeyFile *key_file; char *desktop_file; int i; app_path = NULL; app_dirs = gsm_util_get_app_dirs (); key_file = g_key_file_new (); desktop_file = g_strdup_printf ("%s.desktop", name); g_debug ("GsmUtil: Looking for file '%s'", desktop_file); for (i = 0; app_dirs[i] != NULL; i++) { g_debug ("GsmUtil: Looking in '%s'", app_dirs[i]); } g_key_file_load_from_dirs (key_file, desktop_file, (const char **) app_dirs, &app_path, G_KEY_FILE_NONE, NULL); if (app_path != NULL) { g_debug ("GsmUtil: found in XDG app dirs: '%s'", app_path); } if (app_path == NULL && autostart_dirs != NULL) { g_key_file_load_from_dirs (key_file, desktop_file, (const char **) autostart_dirs, &app_path, G_KEY_FILE_NONE, NULL); if (app_path != NULL) { g_debug ("GsmUtil: found in autostart dirs: '%s'", app_path); } } /* look for gnome vender prefix */ if (app_path == NULL) { g_free (desktop_file); desktop_file = g_strdup_printf ("gnome-%s.desktop", name); g_key_file_load_from_dirs (key_file, desktop_file, (const char **) app_dirs, &app_path, G_KEY_FILE_NONE, NULL); if (app_path != NULL) { g_debug ("GsmUtil: found in XDG app dirs: '%s'", app_path); } } if (app_path == NULL && autostart_dirs != NULL) { g_key_file_load_from_dirs (key_file, desktop_file, (const char **) autostart_dirs, &app_path, G_KEY_FILE_NONE, NULL); if (app_path != NULL) { g_debug ("GsmUtil: found in autostart dirs: '%s'", app_path); } } g_free (desktop_file); g_key_file_free (key_file); g_strfreev (app_dirs); return app_path; } static gboolean ensure_dir_exists (const char *dir) { if (g_file_test (dir, G_FILE_TEST_IS_DIR)) return TRUE; if (g_mkdir_with_parents (dir, 0755) == 0) return TRUE; if (errno == EEXIST) return g_file_test (dir, G_FILE_TEST_IS_DIR); g_warning ("GsmSessionSave: Failed to create directory %s: %s", dir, strerror (errno)); return FALSE; } gchar * gsm_util_get_empty_tmp_session_dir (void) { char *tmp; gboolean exists; tmp = g_build_filename (g_get_user_config_dir (), "gnome-session", "saved-session.new", NULL); exists = ensure_dir_exists (tmp); if (G_UNLIKELY (!exists)) { g_warning ("GsmSessionSave: could not create directory for saved session: %s", tmp); g_free (tmp); return NULL; } else { /* make sure it's empty */ GDir *dir; const char *filename; dir = g_dir_open (tmp, 0, NULL); if (dir) { while ((filename = g_dir_read_name (dir))) { char *path = g_build_filename (tmp, filename, NULL); g_unlink (path); } g_dir_close (dir); } } return tmp; } const gchar * gsm_util_get_saved_session_dir (void) { if (_saved_session_dir == NULL) { gboolean exists; _saved_session_dir = g_build_filename (g_get_user_config_dir (), "gnome-session", "saved-session", NULL); exists = ensure_dir_exists (_saved_session_dir); if (G_UNLIKELY (!exists)) { static gboolean printed_warning = FALSE; if (!printed_warning) { g_warning ("GsmSessionSave: could not create directory for saved session: %s", _saved_session_dir); printed_warning = TRUE; } _saved_session_dir = NULL; return NULL; } } return _saved_session_dir; } char ** gsm_util_get_autostart_dirs () { GPtrArray *dirs; const char * const *system_config_dirs; const char * const *system_data_dirs; int i; dirs = g_ptr_array_new (); g_ptr_array_add (dirs, g_build_filename (g_get_user_config_dir (), "autostart", NULL)); system_data_dirs = g_get_system_data_dirs (); for (i = 0; system_data_dirs[i]; i++) { g_ptr_array_add (dirs, g_build_filename (system_data_dirs[i], "gnome", "autostart", NULL)); } system_config_dirs = g_get_system_config_dirs (); for (i = 0; system_config_dirs[i]; i++) { g_ptr_array_add (dirs, g_build_filename (system_config_dirs[i], "autostart", NULL)); } g_ptr_array_add (dirs, NULL); return (char **) g_ptr_array_free (dirs, FALSE); } char ** gsm_util_get_app_dirs () { GPtrArray *dirs; const char * const *system_data_dirs; int i; dirs = g_ptr_array_new (); g_ptr_array_add (dirs, g_build_filename (g_get_user_data_dir (), "applications", NULL)); system_data_dirs = g_get_system_data_dirs (); for (i = 0; system_data_dirs[i]; i++) { g_ptr_array_add (dirs, g_build_filename (system_data_dirs[i], "applications", NULL)); } g_ptr_array_add (dirs, NULL); return (char **) g_ptr_array_free (dirs, FALSE); } char ** gsm_util_get_desktop_dirs () { char **apps; char **autostart; char **result; int size; int i; apps = gsm_util_get_app_dirs (); autostart = gsm_util_get_autostart_dirs (); size = 0; for (i = 0; apps[i] != NULL; i++) { size++; } for (i = 0; autostart[i] != NULL; i++) { size++; } size += 2; /* saved session + last NULL */ result = g_new (char *, size + 1); for (i = 0; apps[i] != NULL; i++) { result[i] = apps[i]; } g_free (apps); size = i; for (i = 0; autostart[i] != NULL; i++) { result[size + i] = autostart[i]; } g_free (autostart); size = size + i; result[size] = g_strdup (gsm_util_get_saved_session_dir ()); result[size + 1] = NULL; return result; } gboolean gsm_util_text_is_blank (const char *str) { if (str == NULL) { return TRUE; } while (*str) { if (!isspace(*str)) { return FALSE; } str++; } return TRUE; } /** * gsm_util_init_error: * @fatal: whether or not the error is fatal to the login session * @format: printf-style error message format * @...: error message args * * Displays the error message to the user. If @fatal is %TRUE, gsm * will exit after displaying the message. * * This should be called for major errors that occur before the * session is up and running. (Notably, it positions the dialog box * itself, since no window manager will be running yet.) **/ void gsm_util_init_error (gboolean fatal, const char *format, ...) { GtkWidget *dialog; char *msg; va_list args; va_start (args, format); msg = g_strdup_vprintf (format, args); va_end (args); /* If option parsing failed, Gtk won't have been initialized... */ if (!gdk_display_get_default ()) { if (!gtk_init_check (NULL, NULL)) { /* Oh well, no X for you! */ g_printerr (_("Unable to start login session (and unable to connect to the X server)")); g_printerr ("%s", msg); exit (1); } } dialog = gtk_message_dialog_new (NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", msg); g_free (msg); gtk_window_set_position (GTK_WINDOW (dialog), GTK_WIN_POS_CENTER); gtk_dialog_run (GTK_DIALOG (dialog)); gtk_widget_destroy (dialog); if (fatal) { gtk_main_quit (); } } /** * gsm_util_generate_startup_id: * * Generates a new SM client ID. * * Return value: an SM client ID. **/ char * gsm_util_generate_startup_id (void) { static int sequence = -1; static guint rand1 = 0; static guint rand2 = 0; static pid_t pid = 0; struct timeval tv; /* The XSMP spec defines the ID as: * * Version: "1" * Address type and address: * "1" + an IPv4 address as 8 hex digits * "2" + a DECNET address as 12 hex digits * "6" + an IPv6 address as 32 hex digits * Time stamp: milliseconds since UNIX epoch as 13 decimal digits * Process-ID type and process-ID: * "1" + POSIX PID as 10 decimal digits * Sequence number as 4 decimal digits * * XSMP client IDs are supposed to be globally unique: if * SmsGenerateClientID() is unable to determine a network * address for the machine, it gives up and returns %NULL. * GNOME and KDE have traditionally used a fourth address * format in this case: * "0" + 16 random hex digits * * We don't even bother trying SmsGenerateClientID(), since the * user's IP address is probably "192.168.1.*" anyway, so a random * number is actually more likely to be globally unique. */ if (!rand1) { rand1 = g_random_int (); rand2 = g_random_int (); pid = getpid (); } sequence = (sequence + 1) % 10000; gettimeofday (&tv, NULL); return g_strdup_printf ("10%.04x%.04x%.10lu%.3u%.10lu%.4d", rand1, rand2, (unsigned long) tv.tv_sec, (unsigned) tv.tv_usec, (unsigned long) pid, sequence); } static gboolean gsm_util_update_activation_environment (const char *variable, const char *value, GError **error) { DBusGConnection *dbus_connection; DBusGProxy *bus_proxy; GHashTable *environment; gboolean environment_updated; environment_updated = FALSE; bus_proxy = NULL; environment = NULL; dbus_connection = dbus_g_bus_get (DBUS_BUS_SESSION, error); if (dbus_connection == NULL) { return FALSE; } bus_proxy = dbus_g_proxy_new_for_name_owner (dbus_connection, DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS, error); if (bus_proxy == NULL) { goto out; } environment = g_hash_table_new (g_str_hash, g_str_equal); g_hash_table_insert (environment, (void *) variable, (void *) value); if (!dbus_g_proxy_call (bus_proxy, "UpdateActivationEnvironment", error, DBUS_TYPE_G_STRING_STRING_HASHTABLE, environment, G_TYPE_INVALID, G_TYPE_INVALID)) goto out; environment_updated = TRUE; out: if (bus_proxy != NULL) { g_object_unref (bus_proxy); } if (environment != NULL) { g_hash_table_destroy (environment); } return environment_updated; } void gsm_util_setenv (const char *variable, const char *value) { GError *bus_error; g_setenv (variable, value, TRUE); bus_error = NULL; /* If this fails it isn't fatal, it means some things like session * management and keyring won't work in activated clients. */ if (!gsm_util_update_activation_environment (variable, value, &bus_error)) { g_warning ("Could not make bus activated clients aware of %s=%s environment variable: %s", variable, value, bus_error->message); g_error_free (bus_error); } }