diff options
Diffstat (limited to 'mate-session/gsm-session-save.c')
| -rw-r--r-- | mate-session/gsm-session-save.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/mate-session/gsm-session-save.c b/mate-session/gsm-session-save.c new file mode 100644 index 0000000..b31d9fa --- /dev/null +++ b/mate-session/gsm-session-save.c @@ -0,0 +1,254 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * gsm-session-save.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 <config.h> + +#include <glib.h> +#include <glib/gstdio.h> + +#include "gsm-util.h" +#include "gsm-autostart-app.h" +#include "gsm-client.h" + +#include "gsm-session-save.h" + +static gboolean gsm_session_clear_saved_session (const char *directory, + GHashTable *discard_hash); + +typedef struct { + char *dir; + GHashTable *discard_hash; + GError **error; +} SessionSaveData; + +static gboolean +save_one_client (char *id, + GObject *object, + SessionSaveData *data) +{ + GsmClient *client; + GKeyFile *keyfile; + char *path = NULL; + char *filename = NULL; + char *contents = NULL; + gsize length = 0; + char *discard_exec; + GError *local_error; + + client = GSM_CLIENT (object); + + local_error = NULL; + + keyfile = gsm_client_save (client, &local_error); + + if (keyfile == NULL || local_error) { + goto out; + } + + contents = g_key_file_to_data (keyfile, &length, &local_error); + + if (local_error) { + goto out; + } + + filename = g_strdup_printf ("%s.desktop", + gsm_client_peek_startup_id (client)); + + path = g_build_filename (data->dir, filename, NULL); + + g_file_set_contents (path, + contents, + length, + &local_error); + + if (local_error) { + goto out; + } + + discard_exec = g_key_file_get_string (keyfile, + G_KEY_FILE_DESKTOP_GROUP, + GSM_AUTOSTART_APP_DISCARD_KEY, + NULL); + if (discard_exec) { + g_hash_table_insert (data->discard_hash, + discard_exec, discard_exec); + } + + g_debug ("GsmSessionSave: saved client %s to %s", id, filename); + +out: + if (keyfile != NULL) { + g_key_file_free (keyfile); + } + + g_free (contents); + g_free (filename); + g_free (path); + + /* in case of any error, stop saving session */ + if (local_error) { + g_propagate_error (data->error, local_error); + g_error_free (local_error); + + return TRUE; + } + + return FALSE; +} + +void +gsm_session_save (GsmStore *client_store, + GError **error) +{ + const char *save_dir; + char *tmp_dir; + SessionSaveData data; + + g_debug ("GsmSessionSave: Saving session"); + + save_dir = gsm_util_get_saved_session_dir (); + if (save_dir == NULL) { + g_warning ("GsmSessionSave: cannot create saved session directory"); + return; + } + + tmp_dir = gsm_util_get_empty_tmp_session_dir (); + if (tmp_dir == NULL) { + g_warning ("GsmSessionSave: cannot create new saved session directory"); + return; + } + + /* save the session in a temp directory, and remember the discard + * commands */ + data.dir = tmp_dir; + data.discard_hash = g_hash_table_new_full (g_str_hash, g_str_equal, + g_free, NULL); + data.error = error; + + gsm_store_foreach (client_store, + (GsmStoreFunc) save_one_client, + &data); + + if (!*error) { + /* remove the old saved session */ + gsm_session_clear_saved_session (save_dir, data.discard_hash); + + /* rename the temp session dir */ + if (g_file_test (save_dir, G_FILE_TEST_IS_DIR)) + g_rmdir (save_dir); + g_rename (tmp_dir, save_dir); + } else { + g_warning ("GsmSessionSave: error saving session: %s", (*error)->message); + /* FIXME: we should create a hash table filled with the discard + * commands that are in desktop files from save_dir. */ + gsm_session_clear_saved_session (tmp_dir, NULL); + g_rmdir (tmp_dir); + } + + g_hash_table_destroy (data.discard_hash); + g_free (tmp_dir); +} + +static gboolean +gsm_session_clear_one_client (const char *filename, + GHashTable *discard_hash) +{ + gboolean result = TRUE; + GKeyFile *key_file = NULL; + char *discard_exec = NULL; + + g_debug ("GsmSessionSave: removing '%s' from saved session", filename); + + key_file = g_key_file_new (); + if (g_key_file_load_from_file (key_file, filename, + G_KEY_FILE_NONE, NULL)) { + char **argv; + int argc; + + discard_exec = g_key_file_get_string (key_file, + G_KEY_FILE_DESKTOP_GROUP, + GSM_AUTOSTART_APP_DISCARD_KEY, + NULL); + if (!discard_exec) + goto out; + + if (g_hash_table_lookup (discard_hash, discard_exec)) + goto out; + + if (!g_shell_parse_argv (discard_exec, &argc, &argv, NULL)) + goto out; + + result = g_spawn_async (NULL, argv, NULL, G_SPAWN_SEARCH_PATH, + NULL, NULL, NULL, NULL) && result; + + g_strfreev (argv); + } else { + result = FALSE; + } + +out: + if (key_file) + g_key_file_free (key_file); + if (discard_exec) + g_free (discard_exec); + + result = (g_unlink (filename) == 0) && result; + + return result; +} + +static gboolean +gsm_session_clear_saved_session (const char *directory, + GHashTable *discard_hash) +{ + GDir *dir; + const char *filename; + gboolean result = TRUE; + GError *error; + + g_debug ("GsmSessionSave: clearing currently saved session at %s", + directory); + + if (directory == NULL) { + return FALSE; + } + + error = NULL; + dir = g_dir_open (directory, 0, &error); + if (error) { + g_warning ("GsmSessionSave: error loading saved session directory: %s", error->message); + g_error_free (error); + return FALSE; + } + + while ((filename = g_dir_read_name (dir))) { + char *path = g_build_filename (directory, + filename, NULL); + + result = gsm_session_clear_one_client (path, discard_hash) + && result; + + g_free (path); + } + + g_dir_close (dir); + + return result; +} |