/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * * Copyright (C) 2006 Ray Strode * 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, 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., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "gdm-session.h" #include "gdm-session-glue.h" #include "gdm-dbus-util.h" #include "gdm-session.h" #include "gdm-session-enum-types.h" #include "gdm-session-worker-common.h" #include "gdm-session-worker-job.h" #include "gdm-session-worker-glue.h" #include "gdm-common.h" #include "gdm-settings-direct.h" #include "gdm-settings-keys.h" #define GDM_SESSION_DBUS_ERROR_CANCEL "org.gnome.DisplayManager.Session.Error.Cancel" #define GDM_SESSION_DBUS_OBJECT_PATH "/org/gnome/DisplayManager/Session" #define GDM_WORKER_DBUS_PATH "/org/gnome/DisplayManager/Worker" typedef struct { GdmSession *session; GdmSessionWorkerJob *job; GPid worker_pid; char *service_name; GDBusMethodInvocation *starting_invocation; char *starting_username; GDBusMethodInvocation *pending_invocation; GdmDBusWorkerManager *worker_manager_interface; GdmDBusWorker *worker_proxy; GCancellable *worker_cancellable; char *session_id; guint32 is_stopping : 1; GPid reauth_pid_of_caller; } GdmSessionConversation; struct _GdmSessionPrivate { /* per open scope */ char *selected_program; char *selected_session; char *saved_session; char *saved_language; char *selected_user; char *user_x11_authority_file; char *timed_login_username; int timed_login_delay; GList *pending_timed_login_invocations; GHashTable *conversations; GdmSessionConversation *session_conversation; char **conversation_environment; GdmDBusUserVerifier *user_verifier_interface; GdmDBusGreeter *greeter_interface; GdmDBusRemoteGreeter *remote_greeter_interface; GdmDBusChooser *chooser_interface; GList *pending_worker_connections; GList *outside_connections; GPid session_pid; /* object lifetime scope */ char *session_type; char *display_name; char *display_hostname; char *display_device; char *display_seat_id; char *display_x11_authority_file; gboolean display_is_local; GdmSessionVerificationMode verification_mode; uid_t allowed_user; char *fallback_session_name; GDBusServer *worker_server; GDBusServer *outside_server; GHashTable *environment; guint32 is_program_session : 1; guint32 display_is_initial : 1; #ifdef ENABLE_WAYLAND_SUPPORT guint32 ignore_wayland : 1; #endif }; enum { PROP_0, PROP_VERIFICATION_MODE, PROP_ALLOWED_USER, PROP_DISPLAY_NAME, PROP_DISPLAY_HOSTNAME, PROP_DISPLAY_IS_LOCAL, PROP_DISPLAY_IS_INITIAL, PROP_SESSION_TYPE, PROP_DISPLAY_DEVICE, PROP_DISPLAY_SEAT_ID, PROP_DISPLAY_X11_AUTHORITY_FILE, PROP_USER_X11_AUTHORITY_FILE, PROP_CONVERSATION_ENVIRONMENT, #ifdef ENABLE_WAYLAND_SUPPORT PROP_IGNORE_WAYLAND, #endif }; enum { CONVERSATION_STARTED = 0, CONVERSATION_STOPPED, SETUP_COMPLETE, CANCELLED, HOSTNAME_SELECTED, CLIENT_REJECTED, CLIENT_CONNECTED, CLIENT_DISCONNECTED, CLIENT_READY_FOR_SESSION_TO_START, DISCONNECTED, AUTHENTICATION_FAILED, VERIFICATION_COMPLETE, SESSION_OPENED, SESSION_STARTED, SESSION_START_FAILED, SESSION_EXITED, SESSION_DIED, REAUTHENTICATION_STARTED, REAUTHENTICATED, LAST_SIGNAL }; #ifdef ENABLE_WAYLAND_SUPPORT static gboolean gdm_session_is_wayland_session (GdmSession *self); #endif static void update_session_type (GdmSession *self); static void set_session_type (GdmSession *self, const char *session_type); static guint signals [LAST_SIGNAL] = { 0, }; G_DEFINE_TYPE (GdmSession, gdm_session, G_TYPE_OBJECT); static GdmSessionConversation * find_conversation_by_name (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; conversation = g_hash_table_lookup (self->priv->conversations, service_name); if (conversation == NULL) { g_warning ("Tried to look up non-existent conversation %s", service_name); } return conversation; } static void report_and_stop_conversation (GdmSession *self, const char *service_name, GError *error) { g_dbus_error_strip_remote_error (error); if (self->priv->user_verifier_interface != NULL) { if (g_error_matches (error, GDM_SESSION_WORKER_ERROR, GDM_SESSION_WORKER_ERROR_SERVICE_UNAVAILABLE)) { gdm_dbus_user_verifier_emit_service_unavailable (self->priv->user_verifier_interface, service_name, error->message); } else { gdm_dbus_user_verifier_emit_problem (self->priv->user_verifier_interface, service_name, error->message); } gdm_dbus_user_verifier_emit_verification_failed (self->priv->user_verifier_interface, service_name); } gdm_session_stop_conversation (self, service_name); } static void on_authenticate_cb (GdmDBusWorker *proxy, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; char *service_name; GError *error = NULL; gboolean worked; worked = gdm_dbus_worker_call_authenticate_finish (proxy, res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = conversation->session; service_name = conversation->service_name; if (worked) { gdm_session_authorize (self, service_name); } else { g_signal_emit (self, signals[AUTHENTICATION_FAILED], 0, service_name, conversation->worker_pid); report_and_stop_conversation (self, service_name, error); } } static void on_authorize_cb (GdmDBusWorker *proxy, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; char *service_name; GError *error = NULL; gboolean worked; worked = gdm_dbus_worker_call_authorize_finish (proxy, res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = conversation->session; service_name = conversation->service_name; if (worked) { gdm_session_accredit (self, service_name); } else { report_and_stop_conversation (self, service_name, error); } } static void on_establish_credentials_cb (GdmDBusWorker *proxy, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; char *service_name; GError *error = NULL; gboolean worked; worked = gdm_dbus_worker_call_establish_credentials_finish (proxy, res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = g_object_ref (conversation->session); service_name = g_strdup (conversation->service_name); if (worked) { if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_verification_complete (self->priv->user_verifier_interface, service_name); g_signal_emit (self, signals[VERIFICATION_COMPLETE], 0, service_name); } switch (self->priv->verification_mode) { case GDM_SESSION_VERIFICATION_MODE_LOGIN: case GDM_SESSION_VERIFICATION_MODE_CHOOSER: gdm_session_open_session (self, service_name); break; case GDM_SESSION_VERIFICATION_MODE_REAUTHENTICATE: default: break; } } else { report_and_stop_conversation (self, service_name, error); } g_free (service_name); g_object_unref (self); } static const char ** get_system_session_dirs (GdmSession *self) { static GArray *search_array = NULL; static const char *x_search_dirs[] = { "/etc/X11/sessions/", DMCONFDIR "/Sessions/", DATADIR "/gdm/BuiltInSessions/", DATADIR "/xsessions/", NULL }; static const char *wayland_search_dir = DATADIR "/wayland-sessions/"; if (search_array == NULL) { search_array = g_array_new (TRUE, TRUE, sizeof (char *)); g_array_append_vals (search_array, x_search_dirs, G_N_ELEMENTS (x_search_dirs)); #ifdef ENABLE_WAYLAND_SUPPORT #ifdef ENABLE_USER_DISPLAY_SERVER g_array_prepend_val (search_array, wayland_search_dir); #else g_array_append_val (search_array, wayland_search_dir); #endif #endif } return (const char **) search_array->data; } static gboolean is_prog_in_path (const char *prog) { char *f; gboolean ret; f = g_find_program_in_path (prog); ret = (f != NULL); g_free (f); return ret; } static GKeyFile * load_key_file_for_file (GdmSession *self, const char *file, char **full_path) { GKeyFile *key_file; GError *error; gboolean res; key_file = g_key_file_new (); error = NULL; res = g_key_file_load_from_dirs (key_file, file, get_system_session_dirs (self), full_path, G_KEY_FILE_NONE, &error); if (! res) { g_debug ("GdmSession: File '%s' not found: %s", file, error->message); g_error_free (error); g_key_file_free (key_file); key_file = NULL; } return key_file; } static gboolean get_session_command_for_file (GdmSession *self, const char *file, char **command) { GKeyFile *key_file; GError *error; char *exec; gboolean ret; gboolean res; exec = NULL; ret = FALSE; if (command != NULL) { *command = NULL; } g_debug ("GdmSession: getting session command for file '%s'", file); key_file = load_key_file_for_file (self, file, NULL); if (key_file == NULL) { goto out; } error = NULL; res = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_HIDDEN, &error); if (error == NULL && res) { g_debug ("GdmSession: Session %s is marked as hidden", file); goto out; } exec = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_TRY_EXEC, NULL); if (exec != NULL) { res = is_prog_in_path (exec); g_free (exec); exec = NULL; if (! res) { g_debug ("GdmSession: Command not found: %s", G_KEY_FILE_DESKTOP_KEY_TRY_EXEC); goto out; } } error = NULL; exec = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, &error); if (error != NULL) { g_debug ("GdmSession: %s key not found: %s", G_KEY_FILE_DESKTOP_KEY_EXEC, error->message); g_error_free (error); goto out; } if (command != NULL) { *command = g_strdup (exec); } ret = TRUE; out: g_free (exec); return ret; } static gboolean get_session_command_for_name (GdmSession *self, const char *name, char **command) { gboolean res; char *filename; filename = g_strdup_printf ("%s.desktop", name); res = get_session_command_for_file (self, filename, command); g_free (filename); return res; } static const char * get_default_language_name (GdmSession *self) { const char *default_language; if (self->priv->saved_language != NULL) { return self->priv->saved_language; } default_language = g_hash_table_lookup (self->priv->environment, "LANG"); if (default_language != NULL) { return default_language; } return setlocale (LC_MESSAGES, NULL); } static const char * get_fallback_session_name (GdmSession *self) { const char **search_dirs; int i; char *name; GSequence *sessions; GSequenceIter *session; if (self->priv->fallback_session_name != NULL) { /* verify that the cached version still exists */ if (get_session_command_for_name (self, self->priv->fallback_session_name, NULL)) { goto out; } } name = g_strdup ("gnome"); if (get_session_command_for_name (self, name, NULL)) { g_free (self->priv->fallback_session_name); self->priv->fallback_session_name = name; goto out; } g_free (name); sessions = g_sequence_new (g_free); search_dirs = get_system_session_dirs (self); for (i = 0; search_dirs[i] != NULL; i++) { GDir *dir; const char *base_name; dir = g_dir_open (search_dirs[i], 0, NULL); if (dir == NULL) { continue; } do { base_name = g_dir_read_name (dir); if (base_name == NULL) { break; } if (!g_str_has_suffix (base_name, ".desktop")) { continue; } if (get_session_command_for_file (self, base_name, NULL)) { g_sequence_insert_sorted (sessions, g_strdup (base_name), (GCompareDataFunc) g_strcmp0, NULL); } } while (base_name != NULL); g_dir_close (dir); } name = NULL; session = g_sequence_get_begin_iter (sessions); if (g_sequence_iter_is_end (session)) g_error ("GdmSession: no session desktop files installed, aborting..."); do { if (g_sequence_get (session)) { char *base_name; g_free (name); base_name = g_sequence_get (session); name = g_strndup (base_name, strlen (base_name) - strlen (".desktop")); break; } session = g_sequence_iter_next (session); } while (!g_sequence_iter_is_end (session)); g_free (self->priv->fallback_session_name); self->priv->fallback_session_name = name; g_sequence_free (sessions); out: return self->priv->fallback_session_name; } static const char * get_default_session_name (GdmSession *self) { if (self->priv->saved_session != NULL) { return self->priv->saved_session; } return get_fallback_session_name (self); } static void gdm_session_defaults_changed (GdmSession *self) { update_session_type (self); if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_emit_default_language_name_changed (self->priv->greeter_interface, get_default_language_name (self)); gdm_dbus_greeter_emit_default_session_name_changed (self->priv->greeter_interface, get_default_session_name (self)); } } void gdm_session_select_user (GdmSession *self, const char *text) { g_debug ("GdmSession: Setting user: '%s'", text); g_free (self->priv->selected_user); self->priv->selected_user = g_strdup (text); g_free (self->priv->saved_session); self->priv->saved_session = NULL; g_free (self->priv->saved_language); self->priv->saved_language = NULL; } static void cancel_pending_query (GdmSessionConversation *conversation) { if (conversation->pending_invocation == NULL) { return; } g_debug ("GdmSession: Cancelling pending query"); g_dbus_method_invocation_return_dbus_error (conversation->pending_invocation, GDM_SESSION_DBUS_ERROR_CANCEL, "Operation cancelled"); conversation->pending_invocation = NULL; } static void answer_pending_query (GdmSessionConversation *conversation, const char *answer) { g_dbus_method_invocation_return_value (conversation->pending_invocation, g_variant_new ("(s)", answer)); conversation->pending_invocation = NULL; } static void set_pending_query (GdmSessionConversation *conversation, GDBusMethodInvocation *message) { g_assert (conversation->pending_invocation == NULL); conversation->pending_invocation = g_object_ref (message); } static gboolean gdm_session_handle_info_query (GdmDBusWorkerManager *worker_manager_interface, GDBusMethodInvocation *invocation, const char *service_name, const char *query, GdmSession *self) { GdmSessionConversation *conversation; g_return_val_if_fail (self->priv->user_verifier_interface != NULL, FALSE); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { set_pending_query (conversation, invocation); gdm_dbus_user_verifier_emit_info_query (self->priv->user_verifier_interface, service_name, query); } return TRUE; } static gboolean gdm_session_handle_secret_info_query (GdmDBusWorkerManager *worker_manager_interface, GDBusMethodInvocation *invocation, const char *service_name, const char *query, GdmSession *self) { GdmSessionConversation *conversation; g_return_val_if_fail (self->priv->user_verifier_interface != NULL, FALSE); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { set_pending_query (conversation, invocation); gdm_dbus_user_verifier_emit_secret_info_query (self->priv->user_verifier_interface, service_name, query); } return TRUE; } static gboolean gdm_session_handle_info (GdmDBusWorkerManager *worker_manager_interface, GDBusMethodInvocation *invocation, const char *service_name, const char *info, GdmSession *self) { gdm_dbus_worker_manager_complete_info (worker_manager_interface, invocation); if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_info (self->priv->user_verifier_interface, service_name, info); } return TRUE; } static void worker_on_cancel_pending_query (GdmDBusWorker *worker, GdmSessionConversation *conversation) { cancel_pending_query (conversation); } static gboolean gdm_session_handle_problem (GdmDBusWorkerManager *worker_manager_interface, GDBusMethodInvocation *invocation, const char *service_name, const char *problem, GdmSession *self) { gdm_dbus_worker_manager_complete_problem (worker_manager_interface, invocation); if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_problem (self->priv->user_verifier_interface, service_name, problem); } return TRUE; } static void on_opened (GdmDBusWorker *worker, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; char *service_name; GError *error = NULL; gboolean worked; char *session_id; worked = gdm_dbus_worker_call_open_finish (worker, &session_id, res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = conversation->session; service_name = conversation->service_name; if (worked) { g_clear_pointer (&conversation->session_id, (GDestroyNotify) g_free); conversation->session_id = g_strdup (session_id); if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_emit_session_opened (self->priv->greeter_interface, service_name); } if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_verification_complete (self->priv->user_verifier_interface, service_name); g_signal_emit (self, signals[VERIFICATION_COMPLETE], 0, service_name); } g_debug ("GdmSession: Emitting 'session-opened' signal"); g_signal_emit (self, signals[SESSION_OPENED], 0, service_name, session_id); } else { report_and_stop_conversation (self, service_name, error); g_debug ("GdmSession: Emitting 'session-start-failed' signal"); g_signal_emit (self, signals[SESSION_START_FAILED], 0, service_name, error->message); } } static void worker_on_username_changed (GdmDBusWorker *worker, const char *username, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; g_debug ("GdmSession: changing username from '%s' to '%s'", self->priv->selected_user != NULL ? self->priv->selected_user : "", (strlen (username)) ? username : ""); gdm_session_select_user (self, (strlen (username) > 0) ? g_strdup (username) : NULL); gdm_session_defaults_changed (self); } static void worker_on_session_exited (GdmDBusWorker *worker, const char *service_name, int status, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; self->priv->session_conversation = NULL; if (WIFEXITED (status)) { g_debug ("GdmSession: Emitting 'session-exited' signal with exit code '%d'", WEXITSTATUS (status)); g_signal_emit (self, signals[SESSION_EXITED], 0, WEXITSTATUS (status)); } else if (WIFSIGNALED (status)) { g_debug ("GdmSession: Emitting 'session-died' signal with signal number '%d'", WTERMSIG (status)); g_signal_emit (self, signals[SESSION_DIED], 0, WTERMSIG (status)); } } static void on_reauthentication_started_cb (GdmDBusWorker *worker, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; GError *error = NULL; gboolean worked; char *address; worked = gdm_dbus_worker_call_start_reauthentication_finish (worker, &address, res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = conversation->session; if (worked) { GPid pid_of_caller = conversation->reauth_pid_of_caller; g_debug ("GdmSession: Emitting 'reauthentication-started' signal for caller pid '%d'", pid_of_caller); g_signal_emit (self, signals[REAUTHENTICATION_STARTED], 0, pid_of_caller, address); } conversation->reauth_pid_of_caller = 0; } static void worker_on_reauthenticated (GdmDBusWorker *worker, const char *service_name, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; g_debug ("GdmSession: Emitting 'reauthenticated' signal "); g_signal_emit (self, signals[REAUTHENTICATED], 0, service_name); } static void worker_on_saved_language_name_read (GdmDBusWorker *worker, const char *language_name, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; if (strlen (language_name) > 0 && strcmp (language_name, get_default_language_name (self)) != 0) { g_free (self->priv->saved_language); self->priv->saved_language = g_strdup (language_name); if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_emit_default_language_name_changed (self->priv->greeter_interface, language_name); } } } static void worker_on_saved_session_name_read (GdmDBusWorker *worker, const char *session_name, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; if (! get_session_command_for_name (self, session_name, NULL)) { /* ignore sessions that don't exist */ g_debug ("GdmSession: not using invalid .dmrc session: %s", session_name); g_free (self->priv->saved_session); self->priv->saved_session = NULL; return; } if (strcmp (session_name, get_default_session_name (self)) != 0) { g_free (self->priv->saved_session); self->priv->saved_session = g_strdup (session_name); if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_emit_default_session_name_changed (self->priv->greeter_interface, session_name); } } } static GdmSessionConversation * find_conversation_by_pid (GdmSession *self, GPid pid) { GHashTableIter iter; gpointer key, value; g_hash_table_iter_init (&iter, self->priv->conversations); while (g_hash_table_iter_next (&iter, &key, &value)) { GdmSessionConversation *conversation; conversation = (GdmSessionConversation *) value; if (conversation->worker_pid == pid) { return conversation; } } return NULL; } static gboolean allow_worker_function (GDBusAuthObserver *observer, GIOStream *stream, GCredentials *credentials, GdmSession *self) { uid_t connecting_user; connecting_user = g_credentials_get_unix_user (credentials, NULL); if (connecting_user == 0) { return TRUE; } if (connecting_user == self->priv->allowed_user) { return TRUE; } g_debug ("GdmSession: User not allowed"); return FALSE; } static void on_worker_connection_closed (GDBusConnection *connection, gboolean remote_peer_vanished, GError *error, GdmSession *self) { self->priv->pending_worker_connections = g_list_remove (self->priv->pending_worker_connections, connection); g_object_unref (connection); } static gboolean register_worker (GdmDBusWorkerManager *worker_manager_interface, GDBusMethodInvocation *invocation, GdmSession *self) { GdmSessionConversation *conversation; GDBusConnection *connection; GList *connection_node; GCredentials *credentials; GPid pid; g_debug ("GdmSession: Authenticating new connection"); connection = g_dbus_method_invocation_get_connection (invocation); connection_node = g_list_find (self->priv->pending_worker_connections, connection); if (connection_node == NULL) { g_debug ("GdmSession: Ignoring connection that we aren't tracking"); return FALSE; } /* connection was ref'd when it was added to list, we're taking that * reference over and removing it from the list */ self->priv->pending_worker_connections = g_list_delete_link (self->priv->pending_worker_connections, connection_node); g_signal_handlers_disconnect_by_func (connection, G_CALLBACK (on_worker_connection_closed), self); credentials = g_dbus_connection_get_peer_credentials (connection); pid = g_credentials_get_unix_pid (credentials, NULL); conversation = find_conversation_by_pid (self, (GPid) pid); if (conversation == NULL) { g_warning ("GdmSession: New worker connection is from unknown source"); g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_ACCESS_DENIED, "Connection is not from a known conversation"); g_dbus_connection_close_sync (connection, NULL, NULL); return TRUE; } g_dbus_method_invocation_return_value (invocation, NULL); conversation->worker_proxy = gdm_dbus_worker_proxy_new_sync (connection, G_DBUS_PROXY_FLAGS_NONE, NULL, GDM_WORKER_DBUS_PATH, NULL, NULL); /* drop the reference we stole from the pending connections list * since the proxy owns the connection now */ g_object_unref (connection); g_dbus_proxy_set_default_timeout (G_DBUS_PROXY (conversation->worker_proxy), G_MAXINT); conversation->worker_cancellable = g_cancellable_new (); g_signal_connect (conversation->worker_proxy, "username-changed", G_CALLBACK (worker_on_username_changed), conversation); g_signal_connect (conversation->worker_proxy, "session-exited", G_CALLBACK (worker_on_session_exited), conversation); g_signal_connect (conversation->worker_proxy, "reauthenticated", G_CALLBACK (worker_on_reauthenticated), conversation); g_signal_connect (conversation->worker_proxy, "saved-language-name-read", G_CALLBACK (worker_on_saved_language_name_read), conversation); g_signal_connect (conversation->worker_proxy, "saved-session-name-read", G_CALLBACK (worker_on_saved_session_name_read), conversation); g_signal_connect (conversation->worker_proxy, "cancel-pending-query", G_CALLBACK (worker_on_cancel_pending_query), conversation); conversation->worker_manager_interface = g_object_ref (worker_manager_interface); g_debug ("GdmSession: worker connection is %p", connection); g_debug ("GdmSession: Emitting conversation-started signal"); g_signal_emit (self, signals[CONVERSATION_STARTED], 0, conversation->service_name); if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_conversation_started (self->priv->user_verifier_interface, conversation->service_name); } if (conversation->starting_invocation != NULL) { if (conversation->starting_username != NULL) { gdm_session_setup_for_user (self, conversation->service_name, conversation->starting_username); g_clear_pointer (&conversation->starting_username, (GDestroyNotify) g_free); } else { gdm_session_setup (self, conversation->service_name); } } g_debug ("GdmSession: Conversation started"); return TRUE; } static void export_worker_manager_interface (GdmSession *self, GDBusConnection *connection) { GdmDBusWorkerManager *worker_manager_interface; worker_manager_interface = GDM_DBUS_WORKER_MANAGER (gdm_dbus_worker_manager_skeleton_new ()); g_signal_connect (worker_manager_interface, "handle-hello", G_CALLBACK (register_worker), self); g_signal_connect (worker_manager_interface, "handle-info-query", G_CALLBACK (gdm_session_handle_info_query), self); g_signal_connect (worker_manager_interface, "handle-secret-info-query", G_CALLBACK (gdm_session_handle_secret_info_query), self); g_signal_connect (worker_manager_interface, "handle-info", G_CALLBACK (gdm_session_handle_info), self); g_signal_connect (worker_manager_interface, "handle-problem", G_CALLBACK (gdm_session_handle_problem), self); g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (worker_manager_interface), connection, GDM_SESSION_DBUS_OBJECT_PATH, NULL); } static void unexport_worker_manager_interface (GdmSession *self, GdmDBusWorkerManager *worker_manager_interface) { g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (worker_manager_interface)); g_signal_handlers_disconnect_by_func (worker_manager_interface, G_CALLBACK (register_worker), self); g_signal_handlers_disconnect_by_func (worker_manager_interface, G_CALLBACK (gdm_session_handle_info_query), self); g_signal_handlers_disconnect_by_func (worker_manager_interface, G_CALLBACK (gdm_session_handle_secret_info_query), self); g_signal_handlers_disconnect_by_func (worker_manager_interface, G_CALLBACK (gdm_session_handle_info), self); g_signal_handlers_disconnect_by_func (worker_manager_interface, G_CALLBACK (gdm_session_handle_problem), self); } static gboolean handle_connection_from_worker (GDBusServer *server, GDBusConnection *connection, GdmSession *self) { g_debug ("GdmSession: Handling new connection from worker"); /* add to the list of pending connections. We won't be able to * associate it with a specific worker conversation until we have * authenticated the connection (from the Hello handler). */ self->priv->pending_worker_connections = g_list_prepend (self->priv->pending_worker_connections, g_object_ref (connection)); g_signal_connect_object (connection, "closed", G_CALLBACK (on_worker_connection_closed), self, 0); export_worker_manager_interface (self, connection); return TRUE; } static GdmSessionConversation * begin_verification_conversation (GdmSession *self, GDBusMethodInvocation *invocation, const char *service_name) { GdmSessionConversation *conversation = NULL; gboolean conversation_started; conversation_started = gdm_session_start_conversation (self, service_name); if (conversation_started) { conversation = find_conversation_by_name (self, service_name); } if (conversation == NULL) { g_dbus_method_invocation_return_error (invocation, G_DBUS_ERROR, G_DBUS_ERROR_SPAWN_FAILED, _("Could not create authentication helper process")); } return conversation; } static gboolean gdm_session_handle_client_begin_verification (GdmDBusUserVerifier *user_verifier_interface, GDBusMethodInvocation *invocation, const char *service_name, GdmSession *self) { GdmSessionConversation *conversation; conversation = begin_verification_conversation (self, invocation, service_name); if (conversation != NULL) { conversation->starting_invocation = g_object_ref (invocation); conversation->starting_username = NULL; } return TRUE; } static gboolean gdm_session_handle_client_begin_verification_for_user (GdmDBusUserVerifier *user_verifier_interface, GDBusMethodInvocation *invocation, const char *service_name, const char *username, GdmSession *self) { GdmSessionConversation *conversation; conversation = begin_verification_conversation (self, invocation, service_name); if (conversation != NULL) { conversation->starting_invocation = g_object_ref (invocation); conversation->starting_username = g_strdup (username); } return TRUE; } static gboolean gdm_session_handle_client_answer_query (GdmDBusUserVerifier *user_verifier_interface, GDBusMethodInvocation *invocation, const char *service_name, const char *answer, GdmSession *self) { gdm_dbus_user_verifier_complete_answer_query (user_verifier_interface, invocation); gdm_session_answer_query (self, service_name, answer); return TRUE; } static gboolean gdm_session_handle_client_cancel (GdmDBusUserVerifier *user_verifier_interface, GDBusMethodInvocation *invocation, GdmSession *self) { gdm_dbus_user_verifier_complete_cancel (user_verifier_interface, invocation); gdm_session_cancel (self); return TRUE; } static gboolean gdm_session_handle_client_select_session (GdmDBusGreeter *greeter_interface, GDBusMethodInvocation *invocation, const char *session, GdmSession *self) { if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_complete_select_session (greeter_interface, invocation); } gdm_session_select_session (self, session); return TRUE; } static gboolean gdm_session_handle_client_select_user (GdmDBusGreeter *greeter_interface, GDBusMethodInvocation *invocation, const char *username, GdmSession *self) { if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_complete_select_user (greeter_interface, invocation); } gdm_session_select_user (self, username); return TRUE; } static gboolean gdm_session_handle_client_start_session_when_ready (GdmDBusGreeter *greeter_interface, GDBusMethodInvocation *invocation, const char *service_name, gboolean client_is_ready, GdmSession *self) { if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_complete_start_session_when_ready (greeter_interface, invocation); } g_signal_emit (G_OBJECT (self), signals [CLIENT_READY_FOR_SESSION_TO_START], 0, service_name, client_is_ready); return TRUE; } static gboolean gdm_session_handle_get_timed_login_details (GdmDBusGreeter *greeter_interface, GDBusMethodInvocation *invocation, GdmSession *self) { if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_complete_get_timed_login_details (greeter_interface, invocation, self->priv->timed_login_username != NULL, self->priv->timed_login_username != NULL? self->priv->timed_login_username : "", self->priv->timed_login_delay); if (self->priv->timed_login_username != NULL) { gdm_dbus_greeter_emit_timed_login_requested (self->priv->greeter_interface, self->priv->timed_login_username, self->priv->timed_login_delay); } } return TRUE; } static gboolean gdm_session_handle_client_begin_auto_login (GdmDBusGreeter *greeter_interface, GDBusMethodInvocation *invocation, const char *username, GdmSession *self) { if (self->priv->greeter_interface != NULL) { gdm_dbus_greeter_complete_begin_auto_login (greeter_interface, invocation); } g_debug ("GdmSession: begin auto login for user '%s'", username); gdm_session_setup_for_user (self, "gdm-autologin", username); return TRUE; } static void export_user_verifier_interface (GdmSession *self, GDBusConnection *connection) { GdmDBusUserVerifier *user_verifier_interface; user_verifier_interface = GDM_DBUS_USER_VERIFIER (gdm_dbus_user_verifier_skeleton_new ()); g_signal_connect (user_verifier_interface, "handle-begin-verification", G_CALLBACK (gdm_session_handle_client_begin_verification), self); g_signal_connect (user_verifier_interface, "handle-begin-verification-for-user", G_CALLBACK (gdm_session_handle_client_begin_verification_for_user), self); g_signal_connect (user_verifier_interface, "handle-answer-query", G_CALLBACK (gdm_session_handle_client_answer_query), self); g_signal_connect (user_verifier_interface, "handle-cancel", G_CALLBACK (gdm_session_handle_client_cancel), self); g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (user_verifier_interface), connection, GDM_SESSION_DBUS_OBJECT_PATH, NULL); self->priv->user_verifier_interface = user_verifier_interface; } static void export_greeter_interface (GdmSession *self, GDBusConnection *connection) { GdmDBusGreeter *greeter_interface; greeter_interface = GDM_DBUS_GREETER (gdm_dbus_greeter_skeleton_new ()); g_signal_connect (greeter_interface, "handle-begin-auto-login", G_CALLBACK (gdm_session_handle_client_begin_auto_login), self); g_signal_connect (greeter_interface, "handle-select-session", G_CALLBACK (gdm_session_handle_client_select_session), self); g_signal_connect (greeter_interface, "handle-select-user", G_CALLBACK (gdm_session_handle_client_select_user), self); g_signal_connect (greeter_interface, "handle-start-session-when-ready", G_CALLBACK (gdm_session_handle_client_start_session_when_ready), self); g_signal_connect (greeter_interface, "handle-get-timed-login-details", G_CALLBACK (gdm_session_handle_get_timed_login_details), self); g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (greeter_interface), connection, GDM_SESSION_DBUS_OBJECT_PATH, NULL); self->priv->greeter_interface = greeter_interface; } static gboolean gdm_session_handle_client_disconnect (GdmDBusChooser *chooser_interface, GDBusMethodInvocation *invocation, GdmSession *self) { gdm_dbus_chooser_complete_disconnect (chooser_interface, invocation); g_signal_emit (self, signals[DISCONNECTED], 0); return TRUE; } static void export_remote_greeter_interface (GdmSession *self, GDBusConnection *connection) { GdmDBusRemoteGreeter *remote_greeter_interface; remote_greeter_interface = GDM_DBUS_REMOTE_GREETER (gdm_dbus_remote_greeter_skeleton_new ()); g_signal_connect (remote_greeter_interface, "handle-disconnect", G_CALLBACK (gdm_session_handle_client_disconnect), self); g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (remote_greeter_interface), connection, GDM_SESSION_DBUS_OBJECT_PATH, NULL); self->priv->remote_greeter_interface = remote_greeter_interface; } static gboolean gdm_session_handle_client_select_hostname (GdmDBusChooser *chooser_interface, GDBusMethodInvocation *invocation, const char *hostname, GdmSession *self) { gdm_dbus_chooser_complete_select_hostname (chooser_interface, invocation); g_signal_emit (self, signals[HOSTNAME_SELECTED], 0, hostname); return TRUE; } static void export_chooser_interface (GdmSession *self, GDBusConnection *connection) { GdmDBusChooser *chooser_interface; chooser_interface = GDM_DBUS_CHOOSER (gdm_dbus_chooser_skeleton_new ()); g_signal_connect (chooser_interface, "handle-select-hostname", G_CALLBACK (gdm_session_handle_client_select_hostname), self); g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (chooser_interface), connection, GDM_SESSION_DBUS_OBJECT_PATH, NULL); self->priv->chooser_interface = chooser_interface; } static void on_outside_connection_closed (GDBusConnection *connection, gboolean remote_peer_vanished, GError *error, GdmSession *self) { GCredentials *credentials; GPid pid_of_client; g_debug ("GdmSession: external connection closed"); self->priv->outside_connections = g_list_remove (self->priv->outside_connections, connection); credentials = g_dbus_connection_get_peer_credentials (connection); pid_of_client = g_credentials_get_unix_pid (credentials, NULL); g_signal_emit (G_OBJECT (self), signals [CLIENT_DISCONNECTED], 0, credentials, (guint) pid_of_client); g_object_unref (connection); } static gboolean handle_connection_from_outside (GDBusServer *server, GDBusConnection *connection, GdmSession *self) { GCredentials *credentials; GPid pid_of_client; g_debug ("GdmSession: Handling new connection from outside"); self->priv->outside_connections = g_list_prepend (self->priv->outside_connections, g_object_ref (connection)); g_signal_connect_object (connection, "closed", G_CALLBACK (on_outside_connection_closed), self, 0); export_user_verifier_interface (self, connection); switch (self->priv->verification_mode) { case GDM_SESSION_VERIFICATION_MODE_LOGIN: export_greeter_interface (self, connection); break; case GDM_SESSION_VERIFICATION_MODE_CHOOSER: export_chooser_interface (self, connection); break; default: break; } if (!self->priv->display_is_local) { export_remote_greeter_interface (self, connection); } credentials = g_dbus_connection_get_peer_credentials (connection); pid_of_client = g_credentials_get_unix_pid (credentials, NULL); g_signal_emit (G_OBJECT (self), signals [CLIENT_CONNECTED], 0, credentials, (guint) pid_of_client); return TRUE; } static void setup_worker_server (GdmSession *self) { GDBusAuthObserver *observer; GDBusServer *server; GError *error = NULL; g_debug ("GdmSession: Creating D-Bus server for worker for session"); observer = g_dbus_auth_observer_new (); g_signal_connect_object (observer, "authorize-authenticated-peer", G_CALLBACK (allow_worker_function), self, 0); server = gdm_dbus_setup_private_server (observer, &error); g_object_unref (observer); if (server == NULL) { g_warning ("Cannot create worker D-Bus server for the session: %s", error->message); return; } g_signal_connect_object (server, "new-connection", G_CALLBACK (handle_connection_from_worker), self, 0); self->priv->worker_server = server; g_dbus_server_start (server); g_debug ("GdmSession: D-Bus server for workers listening on %s", g_dbus_server_get_client_address (self->priv->worker_server)); } static gboolean allow_user_function (GDBusAuthObserver *observer, GIOStream *stream, GCredentials *credentials, GdmSession *self) { uid_t client_uid; GPid pid_of_client; client_uid = g_credentials_get_unix_user (credentials, NULL); if (client_uid == self->priv->allowed_user) { return TRUE; } g_debug ("GdmSession: User not allowed"); pid_of_client = g_credentials_get_unix_pid (credentials, NULL); g_signal_emit (G_OBJECT (self), signals [CLIENT_REJECTED], 0, credentials, (guint) pid_of_client); return FALSE; } static void setup_outside_server (GdmSession *self) { GDBusAuthObserver *observer; GDBusServer *server; GError *error = NULL; g_debug ("GdmSession: Creating D-Bus server for greeters and such"); observer = g_dbus_auth_observer_new (); g_signal_connect_object (observer, "authorize-authenticated-peer", G_CALLBACK (allow_user_function), self, 0); server = gdm_dbus_setup_private_server (observer, &error); g_object_unref (observer); if (server == NULL) { g_warning ("Cannot create greeter D-Bus server for the session: %s", error->message); return; } g_signal_connect_object (server, "new-connection", G_CALLBACK (handle_connection_from_outside), self, 0); self->priv->outside_server = server; g_dbus_server_start (server); g_debug ("GdmSession: D-Bus server for greeters listening on %s", g_dbus_server_get_client_address (self->priv->outside_server)); } static void free_conversation (GdmSessionConversation *conversation) { if (conversation->job != NULL) { g_warning ("Freeing conversation '%s' with active job", conversation->service_name); } g_free (conversation->service_name); g_free (conversation->starting_username); g_free (conversation->session_id); g_clear_object (&conversation->worker_manager_interface); g_cancellable_cancel (conversation->worker_cancellable); g_clear_object (&conversation->worker_cancellable); if (conversation->worker_proxy != NULL) { g_signal_handlers_disconnect_by_func (conversation->worker_proxy, G_CALLBACK (worker_on_username_changed), conversation); g_signal_handlers_disconnect_by_func (conversation->worker_proxy, G_CALLBACK (worker_on_session_exited), conversation); g_signal_handlers_disconnect_by_func (conversation->worker_proxy, G_CALLBACK (worker_on_reauthenticated), conversation); g_signal_handlers_disconnect_by_func (conversation->worker_proxy, G_CALLBACK (worker_on_saved_language_name_read), conversation); g_signal_handlers_disconnect_by_func (conversation->worker_proxy, G_CALLBACK (worker_on_saved_session_name_read), conversation); g_signal_handlers_disconnect_by_func (conversation->worker_proxy, G_CALLBACK (worker_on_cancel_pending_query), conversation); g_clear_object (&conversation->worker_proxy); } g_clear_object (&conversation->session); g_free (conversation); } static void load_lang_config_file (GdmSession *self) { static const char *config_file = LANG_CONFIG_FILE; gchar *contents = NULL; gchar *p; gchar *key; gchar *value; gsize length; GError *error; GString *line; GRegex *re; if (!g_file_test (config_file, G_FILE_TEST_EXISTS)) { g_debug ("Cannot access '%s'", config_file); return; } error = NULL; if (!g_file_get_contents (config_file, &contents, &length, &error)) { g_debug ("Failed to parse '%s': %s", LANG_CONFIG_FILE, (error && error->message) ? error->message : "(null)"); g_error_free (error); return; } if (!g_utf8_validate (contents, length, NULL)) { g_warning ("Invalid UTF-8 in '%s'", config_file); g_free (contents); return; } re = g_regex_new ("(?P(LANG|LANGUAGE|LC_CTYPE|LC_NUMERIC|LC_TIME|LC_COLLATE|LC_MONETARY|LC_MESSAGES|LC_PAPER|LC_NAME|LC_ADDRESS|LC_TELEPHONE|LC_MEASUREMENT|LC_IDENTIFICATION|LC_ALL))=(\")?(?P[^\"]*)?(\")?", 0, 0, &error); if (re == NULL) { g_warning ("Failed to regex: %s", (error && error->message) ? error->message : "(null)"); g_error_free (error); g_free (contents); return; } line = g_string_new (""); for (p = contents; p && *p; p = g_utf8_find_next_char (p, NULL)) { gunichar ch; GMatchInfo *match_info = NULL; ch = g_utf8_get_char (p); if ((ch != '\n') && (ch != '\0')) { g_string_append_unichar (line, ch); continue; } if (line->str && g_utf8_get_char (line->str) == '#') { goto next_line; } if (!g_regex_match (re, line->str, 0, &match_info)) { goto next_line; } if (!g_match_info_matches (match_info)) { goto next_line; } key = g_match_info_fetch_named (match_info, "key"); value = g_match_info_fetch_named (match_info, "value"); if (key && *key && value && *value) { g_setenv (key, value, TRUE); } g_free (key); g_free (value); next_line: g_match_info_free (match_info); g_string_set_size (line, 0); } g_string_free (line, TRUE); g_regex_unref (re); g_free (contents); } static void gdm_session_init (GdmSession *self) { self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GDM_TYPE_SESSION, GdmSessionPrivate); self->priv->conversations = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, (GDestroyNotify) free_conversation); self->priv->environment = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, (GDestroyNotify) g_free); load_lang_config_file (self); setup_worker_server (self); setup_outside_server (self); } static void worker_started (GdmSessionWorkerJob *job, GdmSessionConversation *conversation) { g_debug ("GdmSession: Worker job started"); } static void worker_exited (GdmSessionWorkerJob *job, int code, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; g_debug ("GdmSession: Worker job exited: %d", code); g_hash_table_steal (self->priv->conversations, conversation->service_name); g_object_ref (conversation->job); if (self->priv->session_conversation == conversation) { g_signal_emit (self, signals[SESSION_EXITED], 0, code); self->priv->session_conversation = NULL; } g_debug ("GdmSession: Emitting conversation-stopped signal"); g_signal_emit (self, signals[CONVERSATION_STOPPED], 0, conversation->service_name); if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_conversation_stopped (self->priv->user_verifier_interface, conversation->service_name); } g_object_unref (conversation->job); if (conversation->is_stopping) { g_object_unref (conversation->job); conversation->job = NULL; } free_conversation (conversation); } static void worker_died (GdmSessionWorkerJob *job, int signum, GdmSessionConversation *conversation) { GdmSession *self = conversation->session; g_debug ("GdmSession: Worker job died: %d", signum); g_hash_table_steal (self->priv->conversations, conversation->service_name); g_object_ref (conversation->job); if (self->priv->session_conversation == conversation) { g_signal_emit (self, signals[SESSION_DIED], 0, signum); self->priv->session_conversation = NULL; } g_debug ("GdmSession: Emitting conversation-stopped signal"); g_signal_emit (self, signals[CONVERSATION_STOPPED], 0, conversation->service_name); if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_conversation_stopped (self->priv->user_verifier_interface, conversation->service_name); } g_object_unref (conversation->job); if (conversation->is_stopping) { g_object_unref (conversation->job); conversation->job = NULL; } free_conversation (conversation); } static GdmSessionConversation * start_conversation (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; char *job_name; conversation = g_new0 (GdmSessionConversation, 1); conversation->session = g_object_ref (self); conversation->service_name = g_strdup (service_name); conversation->worker_pid = -1; conversation->job = gdm_session_worker_job_new (); gdm_session_worker_job_set_server_address (conversation->job, g_dbus_server_get_client_address (self->priv->worker_server)); gdm_session_worker_job_set_for_reauth (conversation->job, self->priv->verification_mode == GDM_SESSION_VERIFICATION_MODE_REAUTHENTICATE); if (self->priv->conversation_environment != NULL) { gdm_session_worker_job_set_environment (conversation->job, (const char * const *) self->priv->conversation_environment); } g_signal_connect (conversation->job, "started", G_CALLBACK (worker_started), conversation); g_signal_connect (conversation->job, "exited", G_CALLBACK (worker_exited), conversation); g_signal_connect (conversation->job, "died", G_CALLBACK (worker_died), conversation); job_name = g_strdup_printf ("gdm-session-worker [pam/%s]", service_name); if (!gdm_session_worker_job_start (conversation->job, job_name)) { g_object_unref (conversation->job); g_free (conversation->service_name); g_free (conversation); g_free (job_name); return NULL; } g_free (job_name); conversation->worker_pid = gdm_session_worker_job_get_pid (conversation->job); return conversation; } static void close_conversation (GdmSessionConversation *conversation) { GdmSession *self = conversation->session; if (conversation->worker_manager_interface != NULL) { unexport_worker_manager_interface (self, conversation->worker_manager_interface); g_clear_object (&conversation->worker_manager_interface); } if (conversation->worker_proxy != NULL) { GDBusConnection *connection = g_dbus_proxy_get_connection (G_DBUS_PROXY (conversation->worker_proxy)); g_dbus_connection_close_sync (connection, NULL, NULL); } } static void stop_conversation (GdmSessionConversation *conversation) { close_conversation (conversation); conversation->is_stopping = TRUE; gdm_session_worker_job_stop (conversation->job); } static void stop_conversation_now (GdmSessionConversation *conversation) { close_conversation (conversation); gdm_session_worker_job_stop_now (conversation->job); g_clear_object (&conversation->job); } #ifdef ENABLE_WAYLAND_SUPPORT void gdm_session_set_ignore_wayland (GdmSession *self, gboolean ignore_wayland) { self->priv->ignore_wayland = ignore_wayland; } #endif gboolean gdm_session_start_conversation (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_val_if_fail (GDM_IS_SESSION (self), FALSE); conversation = g_hash_table_lookup (self->priv->conversations, service_name); if (conversation != NULL) { if (!conversation->is_stopping) { g_warning ("GdmSession: conversation %s started more than once", service_name); return FALSE; } g_debug ("GdmSession: stopping old conversation %s", service_name); gdm_session_worker_job_stop_now (conversation->job); g_object_unref (conversation->job); conversation->job = NULL; } g_debug ("GdmSession: starting conversation %s", service_name); conversation = start_conversation (self, service_name); g_hash_table_insert (self->priv->conversations, g_strdup (service_name), conversation); return TRUE; } void gdm_session_stop_conversation (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); g_debug ("GdmSession: stopping conversation %s", service_name); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { stop_conversation (conversation); } } static void on_setup_complete_cb (GdmDBusWorker *proxy, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; char *service_name; GError *error = NULL; GVariant *ret; ret = g_dbus_proxy_call_finish (G_DBUS_PROXY (proxy), res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = conversation->session; service_name = conversation->service_name; if (ret != NULL) { if (conversation->starting_invocation) { g_dbus_method_invocation_return_value (conversation->starting_invocation, NULL); } g_signal_emit (G_OBJECT (self), signals [SETUP_COMPLETE], 0, service_name); gdm_session_authenticate (self, service_name); g_variant_unref (ret); } else { g_dbus_method_invocation_return_gerror (conversation->starting_invocation, error); report_and_stop_conversation (self, service_name, error); g_error_free (error); } g_clear_object (&conversation->starting_invocation); } static void send_setup (GdmSession *self, const char *service_name) { const char *display_name; const char *display_device; const char *display_seat_id; const char *display_hostname; const char *display_x11_authority_file; GdmSessionConversation *conversation; g_assert (service_name != NULL); if (self->priv->display_name != NULL) { display_name = self->priv->display_name; } else { display_name = ""; } if (self->priv->display_hostname != NULL) { display_hostname = self->priv->display_hostname; } else { display_hostname = ""; } if (self->priv->display_device != NULL) { display_device = self->priv->display_device; } else { display_device = ""; } if (self->priv->display_seat_id != NULL) { display_seat_id = self->priv->display_seat_id; } else { display_seat_id = ""; } if (self->priv->display_x11_authority_file != NULL) { display_x11_authority_file = self->priv->display_x11_authority_file; } else { display_x11_authority_file = ""; } g_debug ("GdmSession: Beginning setup"); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { gdm_dbus_worker_call_setup (conversation->worker_proxy, service_name, display_name, display_x11_authority_file, display_device, display_seat_id, display_hostname, self->priv->display_is_local, self->priv->display_is_initial, conversation->worker_cancellable, (GAsyncReadyCallback) on_setup_complete_cb, conversation); } } static void send_setup_for_user (GdmSession *self, const char *service_name) { const char *display_name; const char *display_device; const char *display_seat_id; const char *display_hostname; const char *display_x11_authority_file; const char *selected_user; GdmSessionConversation *conversation; g_assert (service_name != NULL); conversation = find_conversation_by_name (self, service_name); if (self->priv->display_name != NULL) { display_name = self->priv->display_name; } else { display_name = ""; } if (self->priv->display_hostname != NULL) { display_hostname = self->priv->display_hostname; } else { display_hostname = ""; } if (self->priv->display_device != NULL) { display_device = self->priv->display_device; } else { display_device = ""; } if (self->priv->display_seat_id != NULL) { display_seat_id = self->priv->display_seat_id; } else { display_seat_id = ""; } if (self->priv->display_x11_authority_file != NULL) { display_x11_authority_file = self->priv->display_x11_authority_file; } else { display_x11_authority_file = ""; } if (self->priv->selected_user != NULL) { selected_user = self->priv->selected_user; } else { selected_user = ""; } g_debug ("GdmSession: Beginning setup for user %s", self->priv->selected_user); if (conversation != NULL) { gdm_dbus_worker_call_setup_for_user (conversation->worker_proxy, service_name, selected_user, display_name, display_x11_authority_file, display_device, display_seat_id, display_hostname, self->priv->display_is_local, self->priv->display_is_initial, conversation->worker_cancellable, (GAsyncReadyCallback) on_setup_complete_cb, conversation); } } static void send_setup_for_program (GdmSession *self, const char *service_name, const char *username, const char *log_file) { const char *display_name; const char *display_device; const char *display_seat_id; const char *display_hostname; const char *display_x11_authority_file; GdmSessionConversation *conversation; g_assert (service_name != NULL); if (self->priv->display_name != NULL) { display_name = self->priv->display_name; } else { display_name = ""; } if (self->priv->display_hostname != NULL) { display_hostname = self->priv->display_hostname; } else { display_hostname = ""; } if (self->priv->display_device != NULL) { display_device = self->priv->display_device; } else { display_device = ""; } if (self->priv->display_seat_id != NULL) { display_seat_id = self->priv->display_seat_id; } else { display_seat_id = ""; } if (self->priv->display_x11_authority_file != NULL) { display_x11_authority_file = self->priv->display_x11_authority_file; } else { display_x11_authority_file = ""; } g_debug ("GdmSession: Beginning setup for session for program using PAM service %s", service_name); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { gdm_dbus_worker_call_setup_for_program (conversation->worker_proxy, service_name, username, display_name, display_x11_authority_file, display_device, display_seat_id, display_hostname, self->priv->display_is_local, self->priv->display_is_initial, log_file, conversation->worker_cancellable, (GAsyncReadyCallback) on_setup_complete_cb, conversation); } } void gdm_session_setup (GdmSession *self, const char *service_name) { g_return_if_fail (GDM_IS_SESSION (self)); send_setup (self, service_name); gdm_session_defaults_changed (self); } void gdm_session_setup_for_user (GdmSession *self, const char *service_name, const char *username) { g_return_if_fail (GDM_IS_SESSION (self)); g_return_if_fail (username != NULL); gdm_session_select_user (self, username); self->priv->is_program_session = FALSE; send_setup_for_user (self, service_name); gdm_session_defaults_changed (self); } void gdm_session_setup_for_program (GdmSession *self, const char *service_name, const char *username, const char *log_file) { g_return_if_fail (GDM_IS_SESSION (self)); self->priv->is_program_session = TRUE; send_setup_for_program (self, service_name, username, log_file); } void gdm_session_authenticate (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { gdm_dbus_worker_call_authenticate (conversation->worker_proxy, conversation->worker_cancellable, (GAsyncReadyCallback) on_authenticate_cb, conversation); } } void gdm_session_authorize (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { gdm_dbus_worker_call_authorize (conversation->worker_proxy, conversation->worker_cancellable, (GAsyncReadyCallback) on_authorize_cb, conversation); } } void gdm_session_accredit (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { gdm_dbus_worker_call_establish_credentials (conversation->worker_proxy, conversation->worker_cancellable, (GAsyncReadyCallback) on_establish_credentials_cb, conversation); } } static void send_environment_variable (const char *key, const char *value, GdmSessionConversation *conversation) { gdm_dbus_worker_call_set_environment_variable (conversation->worker_proxy, key, value, conversation->worker_cancellable, NULL, NULL); } static void send_environment (GdmSession *self, GdmSessionConversation *conversation) { g_hash_table_foreach (self->priv->environment, (GHFunc) send_environment_variable, conversation); } void gdm_session_send_environment (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { send_environment (self, conversation); } } static const char * get_session_name (GdmSession *self) { /* FIXME: test the session names before we use them? */ if (self->priv->selected_session != NULL) { return self->priv->selected_session; } return get_default_session_name (self); } static char * get_session_command (GdmSession *self) { gboolean res; char *command; const char *session_name; session_name = get_session_name (self); command = NULL; res = get_session_command_for_name (self, session_name, &command); if (! res) { g_critical ("Cannot find a command for specified session: %s", session_name); exit (1); } return command; } static gchar * get_session_desktop_names (GdmSession *self) { gchar *filename; GKeyFile *keyfile; gchar *desktop_names = NULL; if (self->priv->selected_program != NULL) { return g_strdup ("GNOME-Greeter:GNOME"); } filename = g_strdup_printf ("%s.desktop", get_session_name (self)); g_debug ("GdmSession: getting desktop names for file '%s'", filename); keyfile = load_key_file_for_file (self, filename, NULL); if (keyfile != NULL) { gchar **names; names = g_key_file_get_string_list (keyfile, G_KEY_FILE_DESKTOP_GROUP, "DesktopNames", NULL, NULL); if (names != NULL) { desktop_names = g_strjoinv (":", names); g_strfreev (names); } } g_key_file_free (keyfile); g_free (filename); return desktop_names; } void gdm_session_set_environment_variable (GdmSession *self, const char *key, const char *value) { g_return_if_fail (key != NULL); g_return_if_fail (value != NULL); g_hash_table_replace (self->priv->environment, g_strdup (key), g_strdup (value)); } static void set_up_session_language (GdmSession *self) { char **environment; int i; const char *value; environment = g_listenv (); for (i = 0; environment[i] != NULL; i++) { if (strcmp (environment[i], "LANG") != 0 && strcmp (environment[i], "LANGUAGE") != 0 && !g_str_has_prefix (environment[i], "LC_")) { continue; } value = g_getenv (environment[i]); gdm_session_set_environment_variable (self, environment[i], value); } g_strfreev (environment); } static void set_up_session_environment (GdmSession *self) { GdmSessionDisplayMode display_mode; gchar *desktop_names; char *locale; if (self->priv->selected_program == NULL) { gdm_session_set_environment_variable (self, "GDMSESSION", get_session_name (self)); gdm_session_set_environment_variable (self, "DESKTOP_SESSION", get_session_name (self)); gdm_session_set_environment_variable (self, "XDG_SESSION_DESKTOP", get_session_name (self)); } desktop_names = get_session_desktop_names (self); if (desktop_names != NULL) { gdm_session_set_environment_variable (self, "XDG_CURRENT_DESKTOP", desktop_names); } set_up_session_language (self); locale = g_strdup (get_default_language_name (self)); if (locale != NULL && locale[0] != '\0') { gdm_session_set_environment_variable (self, "LANG", locale); gdm_session_set_environment_variable (self, "GDM_LANG", locale); } g_free (locale); display_mode = gdm_session_get_display_mode (self); if (display_mode == GDM_SESSION_DISPLAY_MODE_REUSE_VT) { gdm_session_set_environment_variable (self, "DISPLAY", self->priv->display_name); if (self->priv->user_x11_authority_file != NULL) { gdm_session_set_environment_variable (self, "XAUTHORITY", self->priv->user_x11_authority_file); } } if (g_getenv ("WINDOWPATH") != NULL) { gdm_session_set_environment_variable (self, "WINDOWPATH", g_getenv ("WINDOWPATH")); } g_free (desktop_names); } static void send_display_mode (GdmSession *self, GdmSessionConversation *conversation) { GdmSessionDisplayMode mode; mode = gdm_session_get_display_mode (self); gdm_dbus_worker_call_set_session_display_mode (conversation->worker_proxy, gdm_session_display_mode_to_string (mode), conversation->worker_cancellable, NULL, NULL); } static void send_session_type (GdmSession *self, GdmSessionConversation *conversation) { const char *session_type = "x11"; if (self->priv->session_type != NULL) { session_type = self->priv->session_type; } gdm_dbus_worker_call_set_environment_variable (conversation->worker_proxy, "XDG_SESSION_TYPE", session_type, conversation->worker_cancellable, NULL, NULL); } void gdm_session_open_session (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { send_display_mode (self, conversation); send_session_type (self, conversation); gdm_dbus_worker_call_open (conversation->worker_proxy, conversation->worker_cancellable, (GAsyncReadyCallback) on_opened, conversation); } } static void stop_all_other_conversations (GdmSession *self, GdmSessionConversation *conversation_to_keep, gboolean now) { GHashTableIter iter; gpointer key, value; if (self->priv->conversations == NULL) { return; } if (conversation_to_keep == NULL) { g_debug ("GdmSession: Stopping all conversations"); } else { g_debug ("GdmSession: Stopping all conversations except for %s", conversation_to_keep->service_name); } g_hash_table_iter_init (&iter, self->priv->conversations); while (g_hash_table_iter_next (&iter, &key, &value)) { GdmSessionConversation *conversation; conversation = (GdmSessionConversation *) value; if (conversation == conversation_to_keep) { if (now) { g_hash_table_iter_steal (&iter); g_free (key); } } else { if (now) { stop_conversation_now (conversation); } else { stop_conversation (conversation); } } } if (now) { g_hash_table_remove_all (self->priv->conversations); if (conversation_to_keep != NULL) { g_hash_table_insert (self->priv->conversations, g_strdup (conversation_to_keep->service_name), conversation_to_keep); } if (self->priv->session_conversation != conversation_to_keep) { self->priv->session_conversation = NULL; } } } static void on_start_program_cb (GdmDBusWorker *worker, GAsyncResult *res, gpointer user_data) { GdmSessionConversation *conversation = user_data; GdmSession *self; char *service_name; GError *error = NULL; gboolean worked; GPid pid; worked = gdm_dbus_worker_call_start_program_finish (worker, &pid, res, &error); if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CLOSED) || g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; self = conversation->session; service_name = conversation->service_name; if (worked) { self->priv->session_pid = pid; self->priv->session_conversation = conversation; g_debug ("GdmSession: Emitting 'session-started' signal with pid '%d'", pid); g_signal_emit (self, signals[SESSION_STARTED], 0, service_name, pid); } else { gdm_session_stop_conversation (self, service_name); g_debug ("GdmSession: Emitting 'session-start-failed' signal"); g_signal_emit (self, signals[SESSION_START_FAILED], 0, service_name, error->message); } } void gdm_session_start_session (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; GdmSessionDisplayMode display_mode; gboolean is_x11 = TRUE; gboolean run_launcher = FALSE; gboolean allow_remote_connections = FALSE; char *command; char *program; g_return_if_fail (GDM_IS_SESSION (self)); g_return_if_fail (self->priv->session_conversation == NULL); conversation = find_conversation_by_name (self, service_name); if (conversation == NULL) { g_warning ("GdmSession: Tried to start session of " "nonexistent conversation %s", service_name); return; } stop_all_other_conversations (self, conversation, FALSE); display_mode = gdm_session_get_display_mode (self); #ifdef ENABLE_WAYLAND_SUPPORT is_x11 = g_strcmp0 (self->priv->session_type, "wayland") != 0; #endif if (display_mode == GDM_SESSION_DISPLAY_MODE_LOGIND_MANAGED || display_mode == GDM_SESSION_DISPLAY_MODE_NEW_VT) { run_launcher = TRUE; } if (self->priv->selected_program == NULL) { gboolean run_xsession_script; command = get_session_command (self); run_xsession_script = !gdm_session_bypasses_xsession (self); if (self->priv->display_is_local) { gboolean disallow_tcp = TRUE; gdm_settings_direct_get_boolean (GDM_KEY_DISALLOW_TCP, &disallow_tcp); allow_remote_connections = !disallow_tcp; } else { allow_remote_connections = TRUE; } if (run_launcher) { if (is_x11) { program = g_strdup_printf (LIBEXECDIR "/gdm-x-session %s %s\"%s\"", run_xsession_script? "--run-script " : "", allow_remote_connections? "--allow-remote-connections " : "", command); } else { program = g_strdup_printf (LIBEXECDIR "/gdm-wayland-session \"%s\"", command); } } else if (run_xsession_script) { program = g_strdup_printf (GDMCONFDIR "/Xsession \"%s\"", command); } else { program = g_strdup (command); } g_free (command); } else { if (run_launcher) { if (is_x11) { program = g_strdup_printf (LIBEXECDIR "/gdm-x-session \"%s\"", self->priv->selected_program); } else { program = g_strdup_printf (LIBEXECDIR "/gdm-wayland-session \"%s\"", self->priv->selected_program); } } else { program = g_strdup (self->priv->selected_program); } } set_up_session_environment (self); send_environment (self, conversation); gdm_dbus_worker_call_start_program (conversation->worker_proxy, program, conversation->worker_cancellable, (GAsyncReadyCallback) on_start_program_cb, conversation); g_free (program); } static void stop_all_conversations (GdmSession *self) { stop_all_other_conversations (self, NULL, TRUE); } static void do_reset (GdmSession *self) { stop_all_conversations (self); g_list_free_full (self->priv->pending_worker_connections, g_object_unref); self->priv->pending_worker_connections = NULL; g_free (self->priv->selected_user); self->priv->selected_user = NULL; g_free (self->priv->selected_session); self->priv->selected_session = NULL; g_free (self->priv->saved_session); self->priv->saved_session = NULL; g_free (self->priv->saved_language); self->priv->saved_language = NULL; g_free (self->priv->user_x11_authority_file); self->priv->user_x11_authority_file = NULL; g_hash_table_remove_all (self->priv->environment); self->priv->session_pid = -1; self->priv->session_conversation = NULL; } void gdm_session_close (GdmSession *self) { g_return_if_fail (GDM_IS_SESSION (self)); g_debug ("GdmSession: Closing session"); do_reset (self); g_list_free_full (self->priv->outside_connections, g_object_unref); self->priv->outside_connections = NULL; } void gdm_session_answer_query (GdmSession *self, const char *service_name, const char *text) { GdmSessionConversation *conversation; g_return_if_fail (GDM_IS_SESSION (self)); conversation = find_conversation_by_name (self, service_name); if (conversation != NULL) { answer_pending_query (conversation, text); } } void gdm_session_cancel (GdmSession *self) { g_return_if_fail (GDM_IS_SESSION (self)); g_signal_emit (G_OBJECT (self), signals [CANCELLED], 0); } void gdm_session_reset (GdmSession *self) { if (self->priv->user_verifier_interface != NULL) { gdm_dbus_user_verifier_emit_reset (self->priv->user_verifier_interface); } do_reset (self); } void gdm_session_set_timed_login_details (GdmSession *self, const char *username, int delay) { g_debug ("GdmSession: timed login details %s %d", username, delay); self->priv->timed_login_username = g_strdup (username); self->priv->timed_login_delay = delay; } gboolean gdm_session_is_running (GdmSession *self) { return self->priv->session_pid > 0; } gboolean gdm_session_client_is_connected (GdmSession *self) { g_return_val_if_fail (GDM_IS_SESSION (self), FALSE); return self->priv->outside_connections != NULL; } uid_t gdm_session_get_allowed_user (GdmSession *self) { return self->priv->allowed_user; } void gdm_session_start_reauthentication (GdmSession *session, GPid pid_of_caller, uid_t uid_of_caller) { GdmSessionConversation *conversation = session->priv->session_conversation; g_return_if_fail (conversation != NULL); conversation->reauth_pid_of_caller = pid_of_caller; gdm_dbus_worker_call_start_reauthentication (conversation->worker_proxy, (int) pid_of_caller, (int) uid_of_caller, conversation->worker_cancellable, (GAsyncReadyCallback) on_reauthentication_started_cb, conversation); } const char * gdm_session_get_server_address (GdmSession *self) { g_return_val_if_fail (GDM_IS_SESSION (self), NULL); return g_dbus_server_get_client_address (self->priv->outside_server); } const char * gdm_session_get_username (GdmSession *self) { g_return_val_if_fail (GDM_IS_SESSION (self), NULL); return self->priv->selected_user; } const char * gdm_session_get_display_device (GdmSession *self) { g_return_val_if_fail (GDM_IS_SESSION (self), NULL); return self->priv->display_device; } const char * gdm_session_get_display_seat_id (GdmSession *self) { g_return_val_if_fail (GDM_IS_SESSION (self), NULL); return g_strdup (self->priv->display_seat_id); } const char * gdm_session_get_session_id (GdmSession *self) { GdmSessionConversation *conversation; g_return_val_if_fail (GDM_IS_SESSION (self), NULL); conversation = self->priv->session_conversation; if (conversation == NULL) { return NULL; } return conversation->session_id; } const char * gdm_session_get_conversation_session_id (GdmSession *self, const char *service_name) { GdmSessionConversation *conversation; g_return_val_if_fail (GDM_IS_SESSION (self), NULL); conversation = find_conversation_by_name (self, service_name); if (conversation == NULL) { return NULL; } return conversation->session_id; } static char * get_session_filename (GdmSession *self) { return g_strdup_printf ("%s.desktop", get_session_name (self)); } #ifdef ENABLE_WAYLAND_SUPPORT static gboolean gdm_session_is_wayland_session (GdmSession *self) { GKeyFile *key_file; gboolean is_wayland_session = FALSE; char *filename; char *full_path = NULL; g_return_val_if_fail (self != NULL, FALSE); g_return_val_if_fail (GDM_IS_SESSION (self), FALSE); filename = get_session_filename (self); key_file = load_key_file_for_file (self, filename, &full_path); if (key_file == NULL) { goto out; } if (full_path != NULL && strstr (full_path, "/wayland-sessions/") != NULL) { is_wayland_session = TRUE; } g_debug ("GdmSession: checking if file '%s' is wayland session: %s", filename, is_wayland_session? "yes" : "no"); out: g_clear_pointer (&key_file, (GDestroyNotify) g_key_file_free); g_free (filename); return is_wayland_session; } #endif static void update_session_type (GdmSession *self) { #ifdef ENABLE_WAYLAND_SUPPORT gboolean is_wayland_session; is_wayland_session = gdm_session_is_wayland_session (self); if (is_wayland_session) { set_session_type (self, "wayland"); } else { set_session_type (self, NULL); } #endif } gboolean gdm_session_bypasses_xsession (GdmSession *self) { GError *error; GKeyFile *key_file; gboolean res; gboolean bypasses_xsession = FALSE; char *filename = NULL; g_return_val_if_fail (self != NULL, FALSE); g_return_val_if_fail (GDM_IS_SESSION (self), FALSE); #ifdef ENABLE_WAYLAND_SUPPORT if (gdm_session_is_wayland_session (self)) { bypasses_xsession = TRUE; goto out; } #endif filename = get_session_filename (self); key_file = load_key_file_for_file (self, filename, NULL); error = NULL; res = g_key_file_has_key (key_file, G_KEY_FILE_DESKTOP_GROUP, "X-GDM-BypassXsession", NULL); if (!res) { goto out; } else { bypasses_xsession = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, "X-GDM-BypassXsession", &error); if (error) { bypasses_xsession = FALSE; g_error_free (error); goto out; } } out: if (bypasses_xsession) { g_debug ("GdmSession: Session %s bypasses Xsession wrapper script", filename); } g_free (filename); return bypasses_xsession; } GdmSessionDisplayMode gdm_session_get_display_mode (GdmSession *self) { g_debug ("GdmSession: type %s, program? %s, seat %s", self->priv->session_type, self->priv->is_program_session? "yes" : "no", self->priv->display_seat_id); /* Non-seat0 sessions share their X server with their login screen * for now. */ if (g_strcmp0 (self->priv->display_seat_id, "seat0") != 0) { return GDM_SESSION_DISPLAY_MODE_REUSE_VT; } #ifdef ENABLE_USER_DISPLAY_SERVER /* All other cases (wayland login screen, X login screen, * wayland user session, X user session) use the NEW_VT * display mode. That display mode means that GDM allocates * a new VT and jumps to it before starting the session. The * session is expected to use logind to gain access to the * display and input devices. * * GDM also has a LOGIND_MANAGED display mode which we can't * use yet. The difference between it and NEW_VT, is with it, * GDM doesn't do any VT handling at all, expecting the session * and logind to do everything. The problem is, for wayland * sessions it will cause flicker until * this bug is fixed: * * https://bugzilla.gnome.org/show_bug.cgi?id=745141 * * Likewise, for X sessions it's problematic because * 1) X doesn't call TakeControl before switching VTs * 2) X doesn't support getting started "in the background" * right now. It will die with an error if logind devices * are paused when handed out. */ return GDM_SESSION_DISPLAY_MODE_NEW_VT; #else #ifdef ENABLE_WAYLAND_SUPPORT /* Wayland sessions are for now assumed to run in a * mutter-launch-like environment, so we allocate * a new VT for them. */ if (g_strcmp0 (self->priv->session_type, "wayland") == 0) { return GDM_SESSION_DISPLAY_MODE_NEW_VT; } #endif return GDM_SESSION_DISPLAY_MODE_REUSE_VT; #endif } void gdm_session_select_program (GdmSession *self, const char *text) { g_free (self->priv->selected_program); self->priv->selected_program = g_strdup (text); } void gdm_session_select_session (GdmSession *self, const char *text) { GHashTableIter iter; gpointer key, value; g_debug ("GdmSession: selecting session '%s'", text); g_free (self->priv->selected_session); self->priv->selected_session = g_strdup (text); update_session_type (self); g_hash_table_iter_init (&iter, self->priv->conversations); while (g_hash_table_iter_next (&iter, &key, &value)) { GdmSessionConversation *conversation; conversation = (GdmSessionConversation *) value; gdm_dbus_worker_call_set_session_name (conversation->worker_proxy, get_session_name (self), conversation->worker_cancellable, NULL, NULL); } } static void set_display_name (GdmSession *self, const char *name) { g_free (self->priv->display_name); self->priv->display_name = g_strdup (name); } static void set_display_hostname (GdmSession *self, const char *name) { g_free (self->priv->display_hostname); self->priv->display_hostname = g_strdup (name); } static void set_display_device (GdmSession *self, const char *name) { g_debug ("GdmSession: Setting display device: %s", name); g_free (self->priv->display_device); self->priv->display_device = g_strdup (name); } static void set_display_seat_id (GdmSession *self, const char *name) { g_free (self->priv->display_seat_id); self->priv->display_seat_id = g_strdup (name); } static void set_user_x11_authority_file (GdmSession *self, const char *name) { g_free (self->priv->user_x11_authority_file); self->priv->user_x11_authority_file = g_strdup (name); } static void set_display_x11_authority_file (GdmSession *self, const char *name) { g_free (self->priv->display_x11_authority_file); self->priv->display_x11_authority_file = g_strdup (name); } static void set_display_is_local (GdmSession *self, gboolean is_local) { self->priv->display_is_local = is_local; } static void set_display_is_initial (GdmSession *self, gboolean is_initial) { self->priv->display_is_initial = is_initial; } static void set_verification_mode (GdmSession *self, GdmSessionVerificationMode verification_mode) { self->priv->verification_mode = verification_mode; } static void set_allowed_user (GdmSession *self, uid_t allowed_user) { self->priv->allowed_user = allowed_user; } static void set_conversation_environment (GdmSession *self, char **environment) { g_strfreev (self->priv->conversation_environment); self->priv->conversation_environment = g_strdupv (environment); } static void set_session_type (GdmSession *self, const char *session_type) { if (g_strcmp0 (self->priv->session_type, session_type) != 0) { g_debug ("GdmSession: setting session to type '%s'", session_type? session_type : ""); g_free (self->priv->session_type); self->priv->session_type = g_strdup (session_type); } } static void gdm_session_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GdmSession *self; self = GDM_SESSION (object); switch (prop_id) { case PROP_SESSION_TYPE: set_session_type (self, g_value_get_string (value)); break; case PROP_DISPLAY_NAME: set_display_name (self, g_value_get_string (value)); break; case PROP_DISPLAY_HOSTNAME: set_display_hostname (self, g_value_get_string (value)); break; case PROP_DISPLAY_DEVICE: set_display_device (self, g_value_get_string (value)); break; case PROP_DISPLAY_SEAT_ID: set_display_seat_id (self, g_value_get_string (value)); break; case PROP_USER_X11_AUTHORITY_FILE: set_user_x11_authority_file (self, g_value_get_string (value)); break; case PROP_DISPLAY_X11_AUTHORITY_FILE: set_display_x11_authority_file (self, g_value_get_string (value)); break; case PROP_DISPLAY_IS_LOCAL: set_display_is_local (self, g_value_get_boolean (value)); break; case PROP_DISPLAY_IS_INITIAL: set_display_is_initial (self, g_value_get_boolean (value)); break; case PROP_VERIFICATION_MODE: set_verification_mode (self, g_value_get_enum (value)); break; case PROP_ALLOWED_USER: set_allowed_user (self, g_value_get_uint (value)); break; case PROP_CONVERSATION_ENVIRONMENT: set_conversation_environment (self, g_value_get_pointer (value)); break; #ifdef ENABLE_WAYLAND_SUPPORT case PROP_IGNORE_WAYLAND: gdm_session_set_ignore_wayland (self, g_value_get_boolean (value)); break; #endif default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gdm_session_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GdmSession *self; self = GDM_SESSION (object); switch (prop_id) { case PROP_SESSION_TYPE: g_value_set_string (value, self->priv->session_type); break; case PROP_DISPLAY_NAME: g_value_set_string (value, self->priv->display_name); break; case PROP_DISPLAY_HOSTNAME: g_value_set_string (value, self->priv->display_hostname); break; case PROP_DISPLAY_DEVICE: g_value_set_string (value, self->priv->display_device); break; case PROP_DISPLAY_SEAT_ID: g_value_set_string (value, self->priv->display_seat_id); break; case PROP_USER_X11_AUTHORITY_FILE: g_value_set_string (value, self->priv->user_x11_authority_file); 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; case PROP_DISPLAY_IS_INITIAL: g_value_set_boolean (value, self->priv->display_is_initial); break; case PROP_VERIFICATION_MODE: g_value_set_enum (value, self->priv->verification_mode); break; case PROP_ALLOWED_USER: g_value_set_uint (value, self->priv->allowed_user); break; case PROP_CONVERSATION_ENVIRONMENT: g_value_set_pointer (value, self->priv->environment); break; #ifdef ENABLE_WAYLAND_SUPPORT case PROP_IGNORE_WAYLAND: g_value_set_boolean (value, self->priv->ignore_wayland); break; #endif default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gdm_session_dispose (GObject *object) { GdmSession *self; self = GDM_SESSION (object); g_debug ("GdmSession: Disposing session"); gdm_session_close (self); g_clear_pointer (&self->priv->conversations, g_hash_table_unref); g_clear_object (&self->priv->user_verifier_interface); g_clear_object (&self->priv->greeter_interface); g_clear_object (&self->priv->chooser_interface); g_free (self->priv->display_name); self->priv->display_name = NULL; g_free (self->priv->display_hostname); self->priv->display_hostname = NULL; g_free (self->priv->display_device); self->priv->display_device = NULL; g_free (self->priv->display_seat_id); self->priv->display_seat_id = NULL; g_free (self->priv->display_x11_authority_file); self->priv->display_x11_authority_file = NULL; g_strfreev (self->priv->conversation_environment); self->priv->conversation_environment = NULL; if (self->priv->worker_server != NULL) { g_dbus_server_stop (self->priv->worker_server); g_clear_object (&self->priv->worker_server); } if (self->priv->outside_server != NULL) { g_dbus_server_stop (self->priv->outside_server); g_clear_object (&self->priv->outside_server); } if (self->priv->environment != NULL) { g_hash_table_destroy (self->priv->environment); self->priv->environment = NULL; } G_OBJECT_CLASS (gdm_session_parent_class)->dispose (object); } static void gdm_session_finalize (GObject *object) { GdmSession *self; GObjectClass *parent_class; self = GDM_SESSION (object); g_free (self->priv->selected_user); g_free (self->priv->selected_session); g_free (self->priv->saved_session); g_free (self->priv->saved_language); g_free (self->priv->fallback_session_name); parent_class = G_OBJECT_CLASS (gdm_session_parent_class); if (parent_class->finalize != NULL) parent_class->finalize (object); } static GObject * gdm_session_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_properties) { GdmSession *self; self = GDM_SESSION (G_OBJECT_CLASS (gdm_session_parent_class)->constructor (type, n_construct_properties, construct_properties)); return G_OBJECT (self); } static void gdm_session_class_init (GdmSessionClass *session_class) { GObjectClass *object_class; object_class = G_OBJECT_CLASS (session_class); object_class->get_property = gdm_session_get_property; object_class->set_property = gdm_session_set_property; object_class->constructor = gdm_session_constructor; object_class->dispose = gdm_session_dispose; object_class->finalize = gdm_session_finalize; g_type_class_add_private (session_class, sizeof (GdmSessionPrivate)); signals [CONVERSATION_STARTED] = g_signal_new ("conversation-started", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, conversation_started), NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); signals [CONVERSATION_STOPPED] = g_signal_new ("conversation-stopped", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, conversation_stopped), NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); signals [SETUP_COMPLETE] = g_signal_new ("setup-complete", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, setup_complete), NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING); signals [AUTHENTICATION_FAILED] = g_signal_new ("authentication-failed", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, authentication_failed), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT); signals [VERIFICATION_COMPLETE] = g_signal_new ("verification-complete", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, verification_complete), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_STRING); signals [SESSION_OPENED] = g_signal_new ("session-opened", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, session_opened), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRING); signals [SESSION_STARTED] = g_signal_new ("session-started", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, session_started), NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_INT); signals [SESSION_START_FAILED] = g_signal_new ("session-start-failed", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, session_start_failed), NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRING); signals [SESSION_EXITED] = g_signal_new ("session-exited", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, session_exited), NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); signals [SESSION_DIED] = g_signal_new ("session-died", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, session_died), NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); signals [REAUTHENTICATION_STARTED] = g_signal_new ("reauthentication-started", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, reauthentication_started), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_STRING); signals [REAUTHENTICATED] = g_signal_new ("reauthenticated", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, reauthenticated), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_STRING); signals [CANCELLED] = g_signal_new ("cancelled", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, cancelled), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); signals [CLIENT_REJECTED] = g_signal_new ("client-rejected", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, client_rejected), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_CREDENTIALS, G_TYPE_UINT); signals [CLIENT_CONNECTED] = g_signal_new ("client-connected", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, client_connected), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_CREDENTIALS, G_TYPE_UINT); signals [CLIENT_DISCONNECTED] = g_signal_new ("client-disconnected", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, client_disconnected), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_CREDENTIALS, G_TYPE_UINT); signals [CLIENT_READY_FOR_SESSION_TO_START] = g_signal_new ("client-ready-for-session-to-start", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, client_ready_for_session_to_start), NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_BOOLEAN); signals [HOSTNAME_SELECTED] = g_signal_new ("hostname-selected", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, disconnected), NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_STRING); signals [DISCONNECTED] = g_signal_new ("disconnected", GDM_TYPE_SESSION, G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GdmSessionClass, disconnected), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); g_object_class_install_property (object_class, PROP_VERIFICATION_MODE, g_param_spec_enum ("verification-mode", "verification mode", "verification mode", GDM_TYPE_SESSION_VERIFICATION_MODE, GDM_SESSION_VERIFICATION_MODE_LOGIN, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_ALLOWED_USER, g_param_spec_uint ("allowed-user", "allowed user", "allowed user ", 0, G_MAXUINT, 0, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_CONVERSATION_ENVIRONMENT, g_param_spec_pointer ("conversation-environment", "conversation environment", "conversation environment", G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_SESSION_TYPE, g_param_spec_string ("session-type", NULL, NULL, NULL, G_PARAM_READWRITE)); 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)); 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_IS_LOCAL, g_param_spec_boolean ("display-is-local", "display is local", "display is local", TRUE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_DISPLAY_IS_INITIAL, g_param_spec_boolean ("display-is-initial", "display is initial", "display is initial", FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_DISPLAY_X11_AUTHORITY_FILE, g_param_spec_string ("display-x11-authority-file", "display x11 authority file", "display x11 authority file", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); /* not construct only */ g_object_class_install_property (object_class, PROP_USER_X11_AUTHORITY_FILE, g_param_spec_string ("user-x11-authority-file", "", "", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_DISPLAY_DEVICE, g_param_spec_string ("display-device", "display device", "display device", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_DISPLAY_SEAT_ID, g_param_spec_string ("display-seat-id", "display seat id", "display seat id", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); #ifdef ENABLE_WAYLAND_SUPPORT g_object_class_install_property (object_class, PROP_IGNORE_WAYLAND, g_param_spec_boolean ("ignore-wayland", "ignore wayland", "ignore wayland", FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); #endif } GdmSession * gdm_session_new (GdmSessionVerificationMode verification_mode, uid_t allowed_user, const char *display_name, const char *display_hostname, const char *display_device, const char *display_seat_id, const char *display_x11_authority_file, gboolean display_is_local, const char * const *environment) { GdmSession *self; self = g_object_new (GDM_TYPE_SESSION, "verification-mode", verification_mode, "allowed-user", (guint) allowed_user, "display-name", display_name, "display-hostname", display_hostname, "display-device", display_device, "display-seat-id", display_seat_id, "display-x11-authority-file", display_x11_authority_file, "display-is-local", display_is_local, "conversation-environment", environment, NULL); return self; } GdmSessionDisplayMode gdm_session_display_mode_from_string (const char *str) { if (strcmp (str, "reuse-vt") == 0) return GDM_SESSION_DISPLAY_MODE_REUSE_VT; if (strcmp (str, "new-vt") == 0) return GDM_SESSION_DISPLAY_MODE_NEW_VT; if (strcmp (str, "logind-managed") == 0) return GDM_SESSION_DISPLAY_MODE_LOGIND_MANAGED; g_warning ("Unknown GdmSessionDisplayMode %s", str); return -1; } const char * gdm_session_display_mode_to_string (GdmSessionDisplayMode mode) { switch (mode) { case GDM_SESSION_DISPLAY_MODE_REUSE_VT: return "reuse-vt"; case GDM_SESSION_DISPLAY_MODE_NEW_VT: return "new-vt"; case GDM_SESSION_DISPLAY_MODE_LOGIND_MANAGED: return "logind-managed"; default: break; } g_warning ("Unknown GdmSessionDisplayMode %d", mode); return ""; } GPid gdm_session_get_pid (GdmSession *session) { return session->priv->session_pid; }