diff options
Diffstat (limited to 'mate-session/gsm-util.c')
| -rw-r--r-- | mate-session/gsm-util.c | 505 |
1 files changed, 505 insertions, 0 deletions
diff --git a/mate-session/gsm-util.c b/mate-session/gsm-util.c new file mode 100644 index 0000000..5d2983e --- /dev/null +++ b/mate-session/gsm-util.c @@ -0,0 +1,505 @@ +/* -*- 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 <config.h> +#include <stdlib.h> +#include <ctype.h> +#include <sys/types.h> +#include <unistd.h> +#include <sys/time.h> +#include <errno.h> +#include <string.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <glib/gstdio.h> +#include <gtk/gtk.h> + +#include <dbus/dbus-glib.h> + +#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 mate vender prefix */ + if (app_path == NULL) { + g_free (desktop_file); + desktop_file = g_strdup_printf ("mate-%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 (), + "mate-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 (), + "mate-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], + "mate", "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. + * MATE 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); + } +} |