/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * * Copyright (C) 2007 William Jon McCann * * 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 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DBUS_API_SUBJECT_TO_CHANGE #include #include #include /* for Display */ #include /* for watch cursor */ #include "gdm-common.h" #include "gdm-slave.h" #include "gdm-slave-glue.h" #include "gdm-server.h" #define GDM_SLAVE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_SLAVE, GdmSlavePrivate)) #define CK_NAME "org.freedesktop.ConsoleKit" #define CK_PATH "/org/freedesktop/ConsoleKit" #define CK_INTERFACE "org.freedesktop.ConsoleKit" #define CK_MANAGER_PATH "/org/freedesktop/ConsoleKit/Manager" #define CK_MANAGER_INTERFACE "org.freedesktop.ConsoleKit.Manager" #define CK_SEAT_INTERFACE "org.freedesktop.ConsoleKit.Seat" #define CK_SESSION_INTERFACE "org.freedesktop.ConsoleKit.Session" #define GDM_DBUS_NAME "org.gnome.DisplayManager" #define GDM_DBUS_DISPLAY_INTERFACE "org.gnome.DisplayManager.Display" #define MAX_CONNECT_ATTEMPTS 10 struct GdmSlavePrivate { char *id; GPid pid; guint output_watch_id; guint error_watch_id; Display *server_display; /* cached display values */ char *display_id; char *display_name; int display_number; char *display_hostname; gboolean display_is_local; gboolean display_is_parented; char *display_seat_id; char *display_x11_authority_file; char *parent_display_name; char *parent_display_x11_authority_file; GArray *display_x11_cookie; DBusGProxy *display_proxy; DBusGConnection *connection; }; enum { PROP_0, PROP_DISPLAY_ID, PROP_DISPLAY_NAME, PROP_DISPLAY_NUMBER, PROP_DISPLAY_HOSTNAME, PROP_DISPLAY_IS_LOCAL, PROP_DISPLAY_SEAT_ID, PROP_DISPLAY_X11_AUTHORITY_FILE }; enum { STOPPED, LAST_SIGNAL }; static guint signals [LAST_SIGNAL] = { 0, }; static void gdm_slave_class_init (GdmSlaveClass *klass); static void gdm_slave_init (GdmSlave *slave); static void gdm_slave_finalize (GObject *object); G_DEFINE_ABSTRACT_TYPE (GdmSlave, gdm_slave, G_TYPE_OBJECT) #define CURSOR_WATCH XC_watch static void gdm_slave_whack_temp_auth_file (GdmSlave *slave) { #if 0 uid_t old; old = geteuid (); if (old != 0) seteuid (0); if (d->parent_temp_auth_file != NULL) { VE_IGNORE_EINTR (g_unlink (d->parent_temp_auth_file)); } g_free (d->parent_temp_auth_file); d->parent_temp_auth_file = NULL; if (old != 0) seteuid (old); #endif } static void create_temp_auth_file (GdmSlave *slave) { #if 0 if (d->type == TYPE_FLEXI_XNEST && d->parent_auth_file != NULL) { if (d->parent_temp_auth_file != NULL) { VE_IGNORE_EINTR (g_unlink (d->parent_temp_auth_file)); } g_free (d->parent_temp_auth_file); d->parent_temp_auth_file = copy_auth_file (d->server_uid, gdm_daemon_config_get_gdmuid (), d->parent_auth_file); } #endif } static void listify_hash (const char *key, const char *value, GPtrArray *env) { char *str; str = g_strdup_printf ("%s=%s", key, value); g_debug ("GdmSlave: script environment: %s", str); g_ptr_array_add (env, str); } static GPtrArray * get_script_environment (GdmSlave *slave, const char *username) { GPtrArray *env; GHashTable *hash; struct passwd *pwent; char *x_servers_file; char *temp; env = g_ptr_array_new (); /* create a hash table of current environment, then update keys has necessary */ hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); /* modify environment here */ g_hash_table_insert (hash, g_strdup ("HOME"), g_strdup ("/")); g_hash_table_insert (hash, g_strdup ("PWD"), g_strdup ("/")); g_hash_table_insert (hash, g_strdup ("SHELL"), g_strdup ("/bin/sh")); g_hash_table_insert (hash, g_strdup ("LOGNAME"), g_strdup (username)); g_hash_table_insert (hash, g_strdup ("USER"), g_strdup (username)); g_hash_table_insert (hash, g_strdup ("USERNAME"), g_strdup (username)); pwent = getpwnam (username); if (pwent != NULL) { if (pwent->pw_dir != NULL && pwent->pw_dir[0] != '\0') { g_hash_table_insert (hash, g_strdup ("HOME"), g_strdup (pwent->pw_dir)); g_hash_table_insert (hash, g_strdup ("PWD"), g_strdup (pwent->pw_dir)); } g_hash_table_insert (hash, g_strdup ("SHELL"), g_strdup (pwent->pw_shell)); } #if 0 if (display_is_parented) { g_hash_table_insert (hash, g_strdup ("GDM_PARENT_DISPLAY"), g_strdup (parent_display_name)); /*g_hash_table_insert (hash, "GDM_PARENT_XAUTHORITY"), slave->priv->parent_temp_auth_file));*/ } #endif /* some env for use with the Pre and Post scripts */ temp = g_strconcat (slave->priv->display_name, ".Xservers", NULL); x_servers_file = g_build_filename (AUTHDIR, temp, NULL); g_free (temp); g_hash_table_insert (hash, g_strdup ("X_SERVERS"), x_servers_file); if (! slave->priv->display_is_local) { g_hash_table_insert (hash, g_strdup ("REMOTE_HOST"), g_strdup (slave->priv->display_hostname)); } /* Runs as root */ g_hash_table_insert (hash, g_strdup ("XAUTHORITY"), g_strdup (slave->priv->display_x11_authority_file)); g_hash_table_insert (hash, g_strdup ("DISPLAY"), g_strdup (slave->priv->display_name)); /*g_setenv ("PATH", gdm_daemon_config_get_value_string (GDM_KEY_ROOT_PATH), TRUE);*/ g_hash_table_insert (hash, g_strdup ("RUNNING_UNDER_GDM"), g_strdup ("true")); g_hash_table_remove (hash, "MAIL"); g_hash_table_foreach (hash, (GHFunc)listify_hash, env); g_hash_table_destroy (hash); g_ptr_array_add (env, NULL); return env; } gboolean gdm_slave_run_script (GdmSlave *slave, const char *dir, const char *login) { char *script; char **argv; gint status; GError *error; GPtrArray *env; gboolean res; gboolean ret; ret = FALSE; g_assert (dir != NULL); g_assert (login != NULL); script = g_build_filename (dir, slave->priv->display_name, NULL); g_debug ("GdmSlave: Trying script %s", script); if (! (g_file_test (script, G_FILE_TEST_IS_REGULAR) && g_file_test (script, G_FILE_TEST_IS_EXECUTABLE))) { g_debug ("GdmSlave: script %s not found; skipping", script); g_free (script); script = NULL; } if (script == NULL && slave->priv->display_hostname != NULL && slave->priv->display_hostname[0] != '\0') { script = g_build_filename (dir, slave->priv->display_hostname, NULL); g_debug ("GdmSlave: Trying script %s", script); if (! (g_file_test (script, G_FILE_TEST_IS_REGULAR) && g_file_test (script, G_FILE_TEST_IS_EXECUTABLE))) { g_debug ("GdmSlave: script %s not found; skipping", script); g_free (script); script = NULL; } } if (script == NULL) { script = g_build_filename (dir, "Default", NULL); g_debug ("GdmSlave: Trying script %s", script); if (! (g_file_test (script, G_FILE_TEST_IS_REGULAR) && g_file_test (script, G_FILE_TEST_IS_EXECUTABLE))) { g_debug ("GdmSlave: script %s not found; skipping", script); g_free (script); script = NULL; } } if (script == NULL) { g_debug ("GdmSlave: no script found"); return TRUE; } create_temp_auth_file (slave); g_debug ("GdmSlave: Running process: %s", script); error = NULL; if (! g_shell_parse_argv (script, NULL, &argv, &error)) { g_warning ("Could not parse command: %s", error->message); g_error_free (error); goto out; } env = get_script_environment (slave, login); res = g_spawn_sync (NULL, argv, (char **)env->pdata, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, NULL, &status, &error); g_ptr_array_foreach (env, (GFunc)g_free, NULL); g_ptr_array_free (env, TRUE); if (! res) { g_warning ("GdmSlave: Unable to run script: %s", error->message); g_error_free (error); } gdm_slave_whack_temp_auth_file (slave); if (WIFEXITED (status)) { g_debug ("GdmSlave: Process exit status: %d", WEXITSTATUS (status)); ret = WEXITSTATUS (status) != 0; } else { ret = TRUE; } out: g_free (script); return ret; } void gdm_slave_set_busy_cursor (GdmSlave *slave) { if (slave->priv->server_display != NULL) { Cursor xcursor; xcursor = XCreateFontCursor (slave->priv->server_display, CURSOR_WATCH); XDefineCursor (slave->priv->server_display, DefaultRootWindow (slave->priv->server_display), xcursor); XFreeCursor (slave->priv->server_display, xcursor); XSync (slave->priv->server_display, False); } } gboolean gdm_slave_connect_to_x11_display (GdmSlave *slave) { gboolean ret; sigset_t mask; sigset_t omask; ret = FALSE; /* We keep our own (windowless) connection (dsp) open to avoid the * X server resetting due to lack of active connections. */ g_debug ("GdmSlave: Server is ready - opening display %s", slave->priv->display_name); g_setenv ("DISPLAY", slave->priv->display_name, TRUE); g_setenv ("XAUTHORITY", slave->priv->display_x11_authority_file, TRUE); sigemptyset (&mask); sigaddset (&mask, SIGCHLD); sigprocmask (SIG_BLOCK, &mask, &omask); /* Give slave access to the display independent of current hostname */ XSetAuthorization ("MIT-MAGIC-COOKIE-1", strlen ("MIT-MAGIC-COOKIE-1"), slave->priv->display_x11_cookie->data, slave->priv->display_x11_cookie->len); slave->priv->server_display = XOpenDisplay (slave->priv->display_name); sigprocmask (SIG_SETMASK, &omask, NULL); if (slave->priv->server_display == NULL) { g_warning ("Unable to connect to display %s", slave->priv->display_name); ret = FALSE; } else { XHostAddress host_entries[2] = { { FamilyServerInterpreted }, { FamilyServerInterpreted } }; XServerInterpretedAddress si_entries[2]; g_debug ("GdmSlave: Connected to display %s", slave->priv->display_name); ret = TRUE; /* Give programs run by the slave and greeter access to the display * independent of current hostname */ si_entries[0].type = "localuser"; si_entries[0].typelength = strlen ("localuser"); si_entries[1].type = "localuser"; si_entries[1].typelength = strlen ("localuser"); si_entries[0].value = "root"; si_entries[0].valuelength = strlen ("root"); si_entries[1].value = GDM_USERNAME; si_entries[1].valuelength = strlen (GDM_USERNAME); host_entries[0].address = (char *) &si_entries[0]; host_entries[0].length = sizeof (XServerInterpretedAddress); host_entries[1].address = (char *) &si_entries[1]; host_entries[1].length = sizeof (XServerInterpretedAddress); XAddHosts (slave->priv->server_display, host_entries, G_N_ELEMENTS (host_entries)); } return ret; } static void display_proxy_destroyed_cb (DBusGProxy *display_proxy, GdmSlave *slave) { g_debug ("GdmSlave: Disconnected from display"); slave->priv->display_proxy = NULL; } static gboolean gdm_slave_set_slave_bus_name (GdmSlave *slave) { gboolean res; GError *error; const char *name; name = dbus_bus_get_unique_name (dbus_g_connection_get_connection (slave->priv->connection)); error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "SetSlaveBusName", &error, G_TYPE_STRING, name, G_TYPE_INVALID, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to set slave bus name on parent: %s", error->message); g_error_free (error); } else { g_warning ("Failed to set slave bus name on parent"); } } return res; } static gboolean gdm_slave_real_start (GdmSlave *slave) { gboolean res; char *id; GError *error; g_debug ("GdmSlave: Starting slave"); g_assert (slave->priv->display_proxy == NULL); g_debug ("GdmSlave: Creating proxy for %s", slave->priv->display_id); error = NULL; slave->priv->display_proxy = dbus_g_proxy_new_for_name_owner (slave->priv->connection, GDM_DBUS_NAME, slave->priv->display_id, GDM_DBUS_DISPLAY_INTERFACE, &error); g_signal_connect (slave->priv->display_proxy, "destroy", G_CALLBACK (display_proxy_destroyed_cb), slave); if (slave->priv->display_proxy == NULL) { if (error != NULL) { g_warning ("Failed to create display proxy %s: %s", slave->priv->display_id, error->message); g_error_free (error); } else { g_warning ("Unable to create display proxy"); } return FALSE; } /* Make sure display ID works */ error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetId", &error, G_TYPE_INVALID, DBUS_TYPE_G_OBJECT_PATH, &id, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get display id %s: %s", slave->priv->display_id, error->message); g_error_free (error); } else { g_warning ("Failed to get display id %s", slave->priv->display_id); } return FALSE; } g_debug ("GdmSlave: Got display id: %s", id); if (strcmp (id, slave->priv->display_id) != 0) { g_critical ("Display ID doesn't match"); exit (1); } gdm_slave_set_slave_bus_name (slave); /* cache some values up front */ error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "IsLocal", &error, G_TYPE_INVALID, G_TYPE_BOOLEAN, &slave->priv->display_is_local, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetX11DisplayName", &error, G_TYPE_INVALID, G_TYPE_STRING, &slave->priv->display_name, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetX11DisplayNumber", &error, G_TYPE_INVALID, G_TYPE_INT, &slave->priv->display_number, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetRemoteHostname", &error, G_TYPE_INVALID, G_TYPE_STRING, &slave->priv->display_hostname, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetX11Cookie", &error, G_TYPE_INVALID, dbus_g_type_get_collection ("GArray", G_TYPE_CHAR), &slave->priv->display_x11_cookie, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetX11AuthorityFile", &error, G_TYPE_INVALID, G_TYPE_STRING, &slave->priv->display_x11_authority_file, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetSeatId", &error, G_TYPE_INVALID, G_TYPE_STRING, &slave->priv->display_seat_id, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get value: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get value"); } return FALSE; } return TRUE; } static gboolean gdm_slave_real_stop (GdmSlave *slave) { g_debug ("GdmSlave: Stopping slave"); if (slave->priv->display_proxy != NULL) { g_object_unref (slave->priv->display_proxy); } return TRUE; } gboolean gdm_slave_start (GdmSlave *slave) { gboolean ret; g_return_val_if_fail (GDM_IS_SLAVE (slave), FALSE); g_debug ("GdmSlave: starting slave"); g_object_ref (slave); ret = GDM_SLAVE_GET_CLASS (slave)->start (slave); g_object_unref (slave); return ret; } gboolean gdm_slave_stop (GdmSlave *slave) { gboolean ret; g_return_val_if_fail (GDM_IS_SLAVE (slave), FALSE); g_debug ("GdmSlave: stopping slave"); g_object_ref (slave); ret = GDM_SLAVE_GET_CLASS (slave)->stop (slave); g_object_unref (slave); return ret; } void gdm_slave_stopped (GdmSlave *slave) { g_return_if_fail (GDM_IS_SLAVE (slave)); g_signal_emit (slave, signals [STOPPED], 0); } gboolean gdm_slave_add_user_authorization (GdmSlave *slave, const char *username, char **filenamep) { gboolean res; GError *error; char *filename; filename = NULL; if (filenamep != NULL) { *filenamep = NULL; } g_debug ("GdmSlave: Requesting user authorization"); error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "AddUserAuthorization", &error, G_TYPE_STRING, username, G_TYPE_INVALID, G_TYPE_STRING, &filename, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to add user authorization: %s", error->message); g_error_free (error); } else { g_warning ("Failed to add user authorization"); } } else { g_debug ("GdmSlave: Got user authorization: %s", filename); } if (filenamep != NULL) { *filenamep = g_strdup (filename); } g_free (filename); return res; } gboolean gdm_slave_get_timed_login_details (GdmSlave *slave, gboolean *enabledp, char **usernamep, int *delayp) { GError *error; gboolean res; gboolean enabled; char *username; int delay; username = NULL; enabled = FALSE; delay = 0; g_debug ("GdmSlave: Requesting timed login details"); error = NULL; res = dbus_g_proxy_call (slave->priv->display_proxy, "GetTimedLoginDetails", &error, G_TYPE_INVALID, G_TYPE_BOOLEAN, &enabled, G_TYPE_STRING, &username, G_TYPE_INT, &delay, G_TYPE_INVALID); if (! res) { if (error != NULL) { g_warning ("Failed to get timed login details: %s", error->message); g_error_free (error); } else { g_warning ("Failed to get timed login details"); } } else { g_debug ("GdmSlave: Got timed login details: %d %s %d", enabled, username, delay); } if (usernamep != NULL) { *usernamep = username; } else { g_free (username); } if (enabledp != NULL) { *enabledp = enabled; } if (delayp != NULL) { *delayp = delay; } return res; } static gboolean _get_uid_and_gid_for_user (const char *username, uid_t *uid, gid_t *gid) { struct passwd *passwd_entry; g_assert (username != NULL); errno = 0; passwd_entry = getpwnam (username); if (passwd_entry == NULL) { return FALSE; } if (uid != NULL) { *uid = passwd_entry->pw_uid; } if (gid != NULL) { *gid = passwd_entry->pw_gid; } return TRUE; } static gboolean x11_session_is_on_seat (GdmSlave *slave, const char *session_id, const char *seat_id) { DBusGProxy *proxy; GError *error; char *sid; gboolean res; gboolean ret; char *x11_display_device; char *x11_display; ret = FALSE; if (seat_id == NULL || seat_id[0] == '\0' || session_id == NULL || session_id[0] == '\0') { return FALSE; } proxy = dbus_g_proxy_new_for_name (slave->priv->connection, CK_NAME, session_id, CK_SESSION_INTERFACE); if (proxy == NULL) { g_warning ("Failed to connect to the ConsoleKit seat object"); goto out; } sid = NULL; error = NULL; res = dbus_g_proxy_call (proxy, "GetSeatId", &error, G_TYPE_INVALID, DBUS_TYPE_G_OBJECT_PATH, &sid, G_TYPE_INVALID); if (! res) { g_debug ("Failed to identify the current seat: %s", error->message); g_error_free (error); goto out; } if (sid == NULL || sid[0] == '\0' || strcmp (sid, seat_id) != 0) { g_debug ("GdmSlave: session not on current seat: %s", seat_id); goto out; } x11_display = NULL; error = NULL; res = dbus_g_proxy_call (proxy, "GetX11Display", &error, G_TYPE_INVALID, G_TYPE_STRING, &x11_display, G_TYPE_INVALID); if (! res) { g_error_free (error); goto out; } /* don't try to switch to our own session */ if (x11_display == NULL || x11_display[0] == '\0' || strcmp (slave->priv->display_name, x11_display) == 0) { g_free (x11_display); goto out; } g_free (x11_display); x11_display_device = NULL; error = NULL; res = dbus_g_proxy_call (proxy, "GetX11DisplayDevice", &error, G_TYPE_INVALID, G_TYPE_STRING, &x11_display_device, G_TYPE_INVALID); if (! res) { g_error_free (error); goto out; } if (x11_display_device == NULL || x11_display_device[0] == '\0') { g_free (x11_display_device); goto out; } g_free (x11_display_device); ret = TRUE; out: if (proxy != NULL) { g_object_unref (proxy); } return ret; } char * gdm_slave_get_primary_session_id_for_user (GdmSlave *slave, const char *username) { gboolean res; gboolean can_activate_sessions; GError *error; DBusGProxy *manager_proxy; DBusGProxy *seat_proxy; GPtrArray *sessions; char *primary_ssid; int i; uid_t uid; if (slave->priv->display_seat_id == NULL || slave->priv->display_seat_id[0] == '\0') { g_debug ("GdmSlave: display seat id is not set; can't switch sessions"); return NULL; } manager_proxy = NULL; primary_ssid = NULL; sessions = NULL; g_debug ("GdmSlave: getting proxy for seat: %s", slave->priv->display_seat_id); seat_proxy = dbus_g_proxy_new_for_name (slave->priv->connection, CK_NAME, slave->priv->display_seat_id, CK_SEAT_INTERFACE); g_debug ("GdmSlave: checking if seat can activate sessions"); error = NULL; res = dbus_g_proxy_call (seat_proxy, "CanActivateSessions", &error, G_TYPE_INVALID, G_TYPE_BOOLEAN, &can_activate_sessions, G_TYPE_INVALID); if (! res) { g_warning ("unable to determine if seat can activate sessions: %s", error->message); g_error_free (error); goto out; } if (! can_activate_sessions) { g_debug ("GdmSlave: seat is unable to activate sessions"); goto out; } manager_proxy = dbus_g_proxy_new_for_name (slave->priv->connection, CK_NAME, CK_MANAGER_PATH, CK_MANAGER_INTERFACE); if (! _get_uid_and_gid_for_user (username, &uid, NULL)) { g_debug ("GdmSlave: unable to determine uid for user: %s", username); goto out; } error = NULL; res = dbus_g_proxy_call (manager_proxy, "GetSessionsForUnixUser", &error, G_TYPE_UINT, uid, G_TYPE_INVALID, dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH), &sessions, G_TYPE_INVALID); if (! res) { g_warning ("unable to determine sessions for user: %s", error->message); g_error_free (error); goto out; } for (i = 0; i < sessions->len; i++) { char *ssid; ssid = g_ptr_array_index (sessions, i); if (x11_session_is_on_seat (slave, ssid, slave->priv->display_seat_id)) { primary_ssid = g_strdup (ssid); break; } } g_ptr_array_foreach (sessions, (GFunc)g_free, NULL); g_ptr_array_free (sessions, TRUE); out: if (seat_proxy != NULL) { g_object_unref (seat_proxy); } if (manager_proxy != NULL) { g_object_unref (manager_proxy); } return primary_ssid; } static gboolean activate_session_id (GdmSlave *slave, const char *seat_id, const char *session_id) { DBusError local_error; DBusMessage *message; DBusMessage *reply; gboolean ret; ret = FALSE; reply = NULL; dbus_error_init (&local_error); message = dbus_message_new_method_call ("org.freedesktop.ConsoleKit", seat_id, "org.freedesktop.ConsoleKit.Seat", "ActivateSession"); if (message == NULL) { goto out; } if (! dbus_message_append_args (message, DBUS_TYPE_OBJECT_PATH, &session_id, DBUS_TYPE_INVALID)) { goto out; } dbus_error_init (&local_error); reply = dbus_connection_send_with_reply_and_block (dbus_g_connection_get_connection (slave->priv->connection), message, -1, &local_error); if (reply == NULL) { if (dbus_error_is_set (&local_error)) { g_warning ("Unable to activate session: %s", local_error.message); dbus_error_free (&local_error); goto out; } } ret = TRUE; out: if (message != NULL) { dbus_message_unref (message); } if (reply != NULL) { dbus_message_unref (reply); } return ret; } static gboolean session_unlock (GdmSlave *slave, const char *ssid) { DBusError error; DBusMessage *message; DBusMessage *reply; g_debug ("ConsoleKit: Unlocking session %s", ssid); message = dbus_message_new_method_call (CK_NAME, ssid, CK_SESSION_INTERFACE, "Unlock"); if (message == NULL) { g_debug ("GdmSlave: ConsoleKit couldn't allocate the D-Bus message"); return FALSE; } dbus_error_init (&error); reply = dbus_connection_send_with_reply_and_block (dbus_g_connection_get_connection (slave->priv->connection), message, -1, &error); dbus_message_unref (message); if (reply != NULL) { dbus_message_unref (reply); } dbus_connection_flush (dbus_g_connection_get_connection (slave->priv->connection)); if (dbus_error_is_set (&error)) { g_debug ("GdmSlave: ConsoleKit %s raised:\n %s\n\n", error.name, error.message); return FALSE; } return TRUE; } gboolean gdm_slave_switch_to_user_session (GdmSlave *slave, const char *username) { gboolean res; gboolean ret; char *ssid_to_activate; ret = FALSE; ssid_to_activate = gdm_slave_get_primary_session_id_for_user (slave, username); if (ssid_to_activate == NULL) { g_debug ("GdmSlave: unable to determine session to activate"); goto out; } g_debug ("GdmSlave: Activating session: '%s'", ssid_to_activate); res = activate_session_id (slave, slave->priv->display_seat_id, ssid_to_activate); if (! res) { g_debug ("GdmSlave: unable to activate session: %s", ssid_to_activate); goto out; } res = session_unlock (slave, ssid_to_activate); if (!res) { /* this isn't fatal */ g_debug ("GdmSlave: unable to unlock session: %s", ssid_to_activate); } ret = TRUE; out: g_free (ssid_to_activate); return ret; } static void _gdm_slave_set_display_id (GdmSlave *slave, const char *id) { g_free (slave->priv->display_id); slave->priv->display_id = g_strdup (id); } static void _gdm_slave_set_display_name (GdmSlave *slave, const char *name) { g_free (slave->priv->display_name); slave->priv->display_name = g_strdup (name); } static void _gdm_slave_set_display_number (GdmSlave *slave, int number) { slave->priv->display_number = number; } static void _gdm_slave_set_display_hostname (GdmSlave *slave, const char *name) { g_free (slave->priv->display_hostname); slave->priv->display_hostname = g_strdup (name); } static void _gdm_slave_set_display_x11_authority_file (GdmSlave *slave, const char *name) { g_free (slave->priv->display_x11_authority_file); slave->priv->display_x11_authority_file = g_strdup (name); } static void _gdm_slave_set_display_seat_id (GdmSlave *slave, const char *id) { g_free (slave->priv->display_seat_id); slave->priv->display_seat_id = g_strdup (id); } static void _gdm_slave_set_display_is_local (GdmSlave *slave, gboolean is) { slave->priv->display_is_local = is; } static void gdm_slave_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GdmSlave *self; self = GDM_SLAVE (object); switch (prop_id) { case PROP_DISPLAY_ID: _gdm_slave_set_display_id (self, g_value_get_string (value)); break; case PROP_DISPLAY_NAME: _gdm_slave_set_display_name (self, g_value_get_string (value)); break; case PROP_DISPLAY_NUMBER: _gdm_slave_set_display_number (self, g_value_get_int (value)); break; case PROP_DISPLAY_HOSTNAME: _gdm_slave_set_display_hostname (self, g_value_get_string (value)); break; case PROP_DISPLAY_SEAT_ID: _gdm_slave_set_display_seat_id (self, g_value_get_string (value)); break; case PROP_DISPLAY_X11_AUTHORITY_FILE: _gdm_slave_set_display_x11_authority_file (self, g_value_get_string (value)); break; case PROP_DISPLAY_IS_LOCAL: _gdm_slave_set_display_is_local (self, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gdm_slave_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GdmSlave *self; self = GDM_SLAVE (object); switch (prop_id) { case PROP_DISPLAY_ID: g_value_set_string (value, self->priv->display_id); break; case PROP_DISPLAY_NAME: g_value_set_string (value, self->priv->display_name); break; case PROP_DISPLAY_NUMBER: g_value_set_int (value, self->priv->display_number); break; case PROP_DISPLAY_HOSTNAME: g_value_set_string (value, self->priv->display_hostname); break; case PROP_DISPLAY_SEAT_ID: g_value_set_string (value, self->priv->display_seat_id); break; case PROP_DISPLAY_X11_AUTHORITY_FILE: g_value_set_string (value, self->priv->display_x11_authority_file); break; case PROP_DISPLAY_IS_LOCAL: g_value_set_boolean (value, self->priv->display_is_local); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean register_slave (GdmSlave *slave) { GError *error; error = NULL; slave->priv->connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); if (slave->priv->connection == NULL) { if (error != NULL) { g_critical ("error getting system bus: %s", error->message); g_error_free (error); } exit (1); } dbus_g_connection_register_g_object (slave->priv->connection, slave->priv->id, G_OBJECT (slave)); return TRUE; } static GObject * gdm_slave_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_properties) { GdmSlave *slave; gboolean res; const char *id; slave = GDM_SLAVE (G_OBJECT_CLASS (gdm_slave_parent_class)->constructor (type, n_construct_properties, construct_properties)); /* Always match the slave id with the master */ id = NULL; if (g_str_has_prefix (slave->priv->display_id, "/org/gnome/DisplayManager/Display")) { id = slave->priv->display_id + strlen ("/org/gnome/DisplayManager/Display"); } g_assert (id != NULL); slave->priv->id = g_strdup_printf ("/org/gnome/DisplayManager/Slave%s", id); g_debug ("GdmSlave: Registering %s", slave->priv->id); res = register_slave (slave); if (! res) { g_warning ("Unable to register slave with system bus"); } return G_OBJECT (slave); } static void gdm_slave_class_init (GdmSlaveClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->get_property = gdm_slave_get_property; object_class->set_property = gdm_slave_set_property; object_class->constructor = gdm_slave_constructor; object_class->finalize = gdm_slave_finalize; klass->start = gdm_slave_real_start; klass->stop = gdm_slave_real_stop; g_type_class_add_private (klass, sizeof (GdmSlavePrivate)); g_object_class_install_property (object_class, PROP_DISPLAY_ID, g_param_spec_string ("display-id", "id", "id", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_NAME, g_param_spec_string ("display-name", "display name", "display name", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_NUMBER, g_param_spec_int ("display-number", "display number", "display number", -1, G_MAXINT, -1, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_HOSTNAME, g_param_spec_string ("display-hostname", "display hostname", "display hostname", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_SEAT_ID, g_param_spec_string ("display-seat-id", "", "", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_X11_AUTHORITY_FILE, g_param_spec_string ("display-x11-authority-file", "", "", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_IS_LOCAL, g_param_spec_boolean ("display-is-local", "display is local", "display is local", TRUE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); signals [STOPPED] = g_signal_new ("stopped", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GdmSlaveClass, stopped), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); dbus_g_object_type_install_info (GDM_TYPE_SLAVE, &dbus_glib_gdm_slave_object_info); } static void gdm_slave_init (GdmSlave *slave) { slave->priv = GDM_SLAVE_GET_PRIVATE (slave); slave->priv->pid = -1; } static void gdm_slave_finalize (GObject *object) { GdmSlave *slave; g_return_if_fail (object != NULL); g_return_if_fail (GDM_IS_SLAVE (object)); slave = GDM_SLAVE (object); g_return_if_fail (slave->priv != NULL); gdm_slave_real_stop (slave); g_free (slave->priv->id); g_free (slave->priv->display_id); g_free (slave->priv->display_name); g_free (slave->priv->display_hostname); g_free (slave->priv->display_seat_id); g_free (slave->priv->display_x11_authority_file); g_free (slave->priv->parent_display_name); g_free (slave->priv->parent_display_x11_authority_file); g_array_free (slave->priv->display_x11_cookie, TRUE); G_OBJECT_CLASS (gdm_slave_parent_class)->finalize (object); }