diff options
-rw-r--r-- | common/gdm-common.c | 545 | ||||
-rw-r--r-- | common/gdm-common.h | 5 | ||||
-rw-r--r-- | utils/Makefile.am | 3 | ||||
-rw-r--r-- | utils/gdmflexiserver.c | 545 |
4 files changed, 553 insertions, 545 deletions
diff --git a/common/gdm-common.c b/common/gdm-common.c index 99f9857d..30857a26 100644 --- a/common/gdm-common.c +++ b/common/gdm-common.c @@ -31,6 +31,7 @@ #include <glib.h> #include <glib/gi18n.h> #include <glib/gstdio.h> +#include <gio/gio.h> #include "gdm-common.h" @@ -38,6 +39,27 @@ #include "mkdtemp.h" #endif +#ifdef WITH_SYSTEMD +#include <systemd/sd-login.h> +#endif + +#define GDM_DBUS_NAME "org.gnome.DisplayManager" +#define GDM_DBUS_LOCAL_DISPLAY_FACTORY_PATH "/org/gnome/DisplayManager/LocalDisplayFactory" +#define GDM_DBUS_LOCAL_DISPLAY_FACTORY_INTERFACE "org.gnome.DisplayManager.LocalDisplayFactory" + +#ifdef WITH_CONSOLE_KIT +#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" +#endif + +G_DEFINE_QUARK (gdm-common-error, gdm_common_error); + const char * gdm_make_temp_dir (char *template) { @@ -511,3 +533,526 @@ gdm_generate_random_bytes (gsize size, close (fd); return bytes; } +static gboolean +create_transient_display (GDBusConnection *connection, + GError **error) +{ + GError *local_error = NULL; + GVariant *reply; + const char *value; + + reply = g_dbus_connection_call_sync (connection, + GDM_DBUS_NAME, + GDM_DBUS_LOCAL_DISPLAY_FACTORY_PATH, + GDM_DBUS_LOCAL_DISPLAY_FACTORY_INTERFACE, + "CreateTransientDisplay", + NULL, /* parameters */ + G_VARIANT_TYPE ("(o)"), + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to create transient display: %s", local_error->message); + g_propagate_error (error, local_error); + return FALSE; + } + + g_variant_get (reply, "(&o)", &value); + g_debug ("Started %s", value); + + g_variant_unref (reply); + return TRUE; +} + +#ifdef WITH_CONSOLE_KIT + +static gboolean +get_current_session_id (GDBusConnection *connection, + char **session_id) +{ + GError *local_error = NULL; + GVariant *reply; + + reply = g_dbus_connection_call_sync (connection, + CK_NAME, + CK_MANAGER_PATH, + CK_MANAGER_INTERFACE, + "GetCurrentSession", + NULL, /* parameters */ + G_VARIANT_TYPE ("(o)"), + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to determine session: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_get (reply, "(o)", session_id); + g_variant_unref (reply); + + return TRUE; +} + +static gboolean +get_seat_id_for_session (GDBusConnection *connection, + const char *session_id, + char **seat_id) +{ + GError *local_error = NULL; + GVariant *reply; + + reply = g_dbus_connection_call_sync (connection, + CK_NAME, + session_id, + CK_SESSION_INTERFACE, + "GetSeatId", + NULL, /* parameters */ + G_VARIANT_TYPE ("(o)"), + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to determine seat: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_get (reply, "(o)", seat_id); + g_variant_unref (reply); + + return TRUE; +} + +static char * +get_current_seat_id (GDBusConnection *connection) +{ + gboolean res; + char *session_id; + char *seat_id; + + session_id = NULL; + seat_id = NULL; + + res = get_current_session_id (connection, &session_id); + if (res) { + res = get_seat_id_for_session (connection, session_id, &seat_id); + } + g_free (session_id); + + return seat_id; +} + +static gboolean +activate_session_id_for_ck (GDBusConnection *connection, + const char *seat_id, + const char *session_id) +{ + GError *local_error = NULL; + GVariant *reply; + + reply = g_dbus_connection_call_sync (connection, + CK_NAME, + seat_id, + CK_SEAT_INTERFACE, + "ActivateSession", + g_variant_new ("(o)", session_id), + NULL, + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to activate session: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_unref (reply); + + return TRUE; +} + +static gboolean +session_is_login_window (GDBusConnection *connection, + const char *session_id) +{ + GError *local_error = NULL; + GVariant *reply; + const char *value; + gboolean ret; + + reply = g_dbus_connection_call_sync (connection, + CK_NAME, + session_id, + CK_SESSION_INTERFACE, + "GetSessionType", + NULL, + G_VARIANT_TYPE ("(s)"), + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to determine session type: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_get (reply, "(&s)", &value); + + if (value == NULL || value[0] == '\0' || strcmp (value, "LoginWindow") != 0) { + ret = FALSE; + } else { + ret = TRUE; + } + + g_variant_unref (reply); + + return ret; +} + +static gboolean +seat_can_activate_sessions (GDBusConnection *connection, + const char *seat_id) +{ + GError *local_error = NULL; + GVariant *reply; + gboolean ret; + + reply = g_dbus_connection_call_sync (connection, + CK_NAME, + seat_id, + CK_SEAT_INTERFACE, + "CanActivateSessions", + NULL, + G_VARIANT_TYPE ("(b)"), + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to determine if can activate sessions: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_get (reply, "(b)", &ret); + g_variant_unref (reply); + + return ret; +} + +static const char ** +seat_get_sessions (GDBusConnection *connection, + const char *seat_id) +{ + GError *local_error = NULL; + GVariant *reply; + const char **value; + + reply = g_dbus_connection_call_sync (connection, + CK_NAME, + seat_id, + CK_SEAT_INTERFACE, + "GetSessions", + NULL, + G_VARIANT_TYPE ("(ao)"), + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to list sessions: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_get (reply, "(^ao)", &value); + g_variant_unref (reply); + + return value; +} + +static gboolean +get_login_window_session_id_for_ck (GDBusConnection *connection, + const char *seat_id, + char **session_id) +{ + gboolean can_activate_sessions; + const char **sessions; + int i; + + *session_id = NULL; + sessions = NULL; + + g_debug ("checking if seat can activate sessions"); + + can_activate_sessions = seat_can_activate_sessions (connection, seat_id); + if (! can_activate_sessions) { + g_debug ("seat is unable to activate sessions"); + return FALSE; + } + + sessions = seat_get_sessions (connection, seat_id); + for (i = 0; sessions [i] != NULL; i++) { + const char *ssid; + + ssid = sessions [i]; + + if (session_is_login_window (connection, ssid)) { + *session_id = g_strdup (ssid); + break; + } + } + g_free (sessions); + + return TRUE; +} + +static gboolean +goto_login_session_for_ck (GDBusConnection *connection, + GError **error) +{ + gboolean ret; + gboolean res; + char *session_id; + char *seat_id; + + ret = FALSE; + + /* First look for any existing LoginWindow sessions on the seat. + If none are found, create a new one. */ + + seat_id = get_current_seat_id (connection); + if (seat_id == NULL || seat_id[0] == '\0') { + g_debug ("seat id is not set; can't switch sessions"); + g_set_error (error, GDM_COMMON_ERROR, 0, _("Could not identify the current session.")); + + return FALSE; + } + + res = get_login_window_session_id_for_ck (connection, seat_id, &session_id); + if (! res) { + g_set_error (error, GDM_COMMON_ERROR, 1, _("User unable to switch sessions.")); + return FALSE; + } + + if (session_id != NULL) { + res = activate_session_id_for_ck (connection, seat_id, session_id); + if (res) { + ret = TRUE; + } + } + + if (! ret && g_strcmp0 (seat_id, "/org/freedesktop/ConsoleKit/Seat1") == 0) { + res = create_transient_display (connection, error); + if (res) { + ret = TRUE; + } + } + + return ret; +} +#endif + +#ifdef WITH_SYSTEMD + +static gboolean +activate_session_id_for_systemd (GDBusConnection *connection, + const char *seat_id, + const char *session_id) +{ + GError *local_error = NULL; + GVariant *reply; + + reply = g_dbus_connection_call_sync (connection, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "ActivateSessionOnSeat", + g_variant_new ("(ss)", session_id, seat_id), + NULL, + G_DBUS_CALL_FLAGS_NONE, + -1, + NULL, &local_error); + if (reply == NULL) { + g_warning ("Unable to activate session: %s", local_error->message); + g_error_free (local_error); + return FALSE; + } + + g_variant_unref (reply); + + return TRUE; +} + +static gboolean +get_login_window_session_id_for_systemd (const char *seat_id, + char **session_id) +{ + gboolean ret; + int res, i; + char **sessions; + char *service_class; + char *state; + + res = sd_seat_get_sessions (seat_id, &sessions, NULL, NULL); + if (res < 0) { + g_debug ("Failed to determine sessions: %s", strerror (-res)); + return FALSE; + } + + if (sessions == NULL || sessions[0] == NULL) { + *session_id = NULL; + ret = TRUE; + goto out; + } + + for (i = 0; sessions[i]; i ++) { + res = sd_session_get_class (sessions[i], &service_class); + if (res < 0) { + g_debug ("failed to determine class of session %s: %s", sessions[i], strerror (-res)); + ret = FALSE; + goto out; + } + + if (strcmp (service_class, "greeter") != 0) { + free (service_class); + continue; + } + + free (service_class); + + ret = sd_session_get_state (sessions[i], &state); + if (ret < 0) { + g_debug ("failed to determine state of session %s: %s", sessions[i], strerror (-res)); + ret = FALSE; + goto out; + } + + if (g_strcmp0 (state, "closing") == 0) { + free (state); + continue; + } + free (state); + + *session_id = g_strdup (sessions[i]); + ret = TRUE; + break; + + } + + *session_id = NULL; + ret = TRUE; + +out: + for (i = 0; sessions[i]; i ++) { + free (sessions[i]); + } + + free (sessions); + + return ret; +} + +static gboolean +goto_login_session_for_systemd (GDBusConnection *connection, + GError **error) +{ + gboolean ret; + int res; + char *our_session; + char *session_id; + char *seat_id; + + ret = FALSE; + session_id = NULL; + seat_id = NULL; + + /* First look for any existing LoginWindow sessions on the seat. + If none are found, create a new one. */ + + /* Note that we mostly use free () here, instead of g_free () + * since the data allocated is from libsystemd-logind, which + * does not use GLib's g_malloc (). */ + + res = sd_pid_get_session (0, &our_session); + if (res < 0) { + g_debug ("failed to determine own session: %s", strerror (-res)); + g_set_error (error, GDM_COMMON_ERROR, 0, _("Could not identify the current session.")); + + return FALSE; + } + + res = sd_session_get_seat (our_session, &seat_id); + free (our_session); + if (res < 0) { + g_debug ("failed to determine own seat: %s", strerror (-res)); + g_set_error (error, GDM_COMMON_ERROR, 0, _("Could not identify the current seat.")); + + return FALSE; + } + + res = sd_seat_can_multi_session (seat_id); + if (res < 0) { + free (seat_id); + + g_debug ("failed to determine whether seat can do multi session: %s", strerror (-res)); + g_set_error (error, GDM_COMMON_ERROR, 0, _("The system is unable to determine whether to switch to an existing login screen or start up a new login screen.")); + + return FALSE; + } + + if (res == 0) { + free (seat_id); + + g_set_error (error, GDM_COMMON_ERROR, 0, _("The system is unable to start up a new login screen.")); + + return FALSE; + } + + res = get_login_window_session_id_for_systemd (seat_id, &session_id); + if (res && session_id != NULL) { + res = activate_session_id_for_systemd (connection, seat_id, session_id); + + if (res) { + ret = TRUE; + } + } + + if (! ret && g_strcmp0 (seat_id, "seat0") == 0) { + res = create_transient_display (connection, error); + if (res) { + ret = TRUE; + } + } + + free (seat_id); + g_free (session_id); + + return ret; +} +#endif + +gboolean +gdm_goto_login_session (GError **error) +{ + GError *local_error; + GDBusConnection *connection; + + local_error = NULL; + connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &local_error); + if (connection == NULL) { + g_debug ("Failed to connect to the D-Bus daemon: %s", local_error->message); + g_propagate_error (error, local_error); + return FALSE; + } + +#ifdef WITH_SYSTEMD + if (LOGIND_RUNNING()) { + return goto_login_session_for_systemd (connection, error); + } +#endif + +#ifdef WITH_CONSOLE_KIT + return goto_login_session_for_ck (connection, error); +#endif +} diff --git a/common/gdm-common.h b/common/gdm-common.h index be4d1032..c17e603f 100644 --- a/common/gdm-common.h +++ b/common/gdm-common.h @@ -36,6 +36,9 @@ /* check if logind is running */ #define LOGIND_RUNNING() (access("/run/systemd/seats/", F_OK) >= 0) +GQuark gdm_common_error_quark (void); +#define GDM_COMMON_ERROR gdm_common_error_quark() + G_BEGIN_DECLS int gdm_wait_on_pid (int pid); @@ -61,7 +64,7 @@ gboolean gdm_string_hex_decode (const GString *source, int insert_at); char *gdm_generate_random_bytes (gsize size, GError **error); - +gboolean gdm_goto_login_session (GError **error); G_END_DECLS #endif /* _GDM_COMMON_H */ diff --git a/utils/Makefile.am b/utils/Makefile.am index 8b400f4c..992ba6cf 100644 --- a/utils/Makefile.am +++ b/utils/Makefile.am @@ -5,6 +5,8 @@ AM_CPPFLAGS = \ -I$(builddir) \ -I$(top_srcdir) \ -I$(top_builddir) \ + -I$(top_srcdir)/common \ + -I$(top_builddir)/common \ -DLOCALSTATEDIR=\""$(localstatedir)"\" \ -DGDM_SCREENSHOT_DIR=\""$(GDM_SCREENSHOT_DIR)"\"\ -DGNOMELOCALEDIR=\""$(datadir)/locale"\" \ @@ -32,6 +34,7 @@ gdmflexiserver_SOURCES = \ $(NULL) gdmflexiserver_LDADD = \ + $(top_builddir)/common/libgdmcommon.la \ $(GTK_LIBS) \ $(COMMON_LIBS) \ $(SYSTEMD_LIBS) \ diff --git a/utils/gdmflexiserver.c b/utils/gdmflexiserver.c index 1c067cb4..3688fa4e 100644 --- a/utils/gdmflexiserver.c +++ b/utils/gdmflexiserver.c @@ -31,25 +31,6 @@ #include "common/gdm-common.h" -#ifdef WITH_SYSTEMD -#include <systemd/sd-login.h> -#endif - -#define GDM_DBUS_NAME "org.gnome.DisplayManager" -#define GDM_DBUS_LOCAL_DISPLAY_FACTORY_PATH "/org/gnome/DisplayManager/LocalDisplayFactory" -#define GDM_DBUS_LOCAL_DISPLAY_FACTORY_INTERFACE "org.gnome.DisplayManager.LocalDisplayFactory" - -#ifdef WITH_CONSOLE_KIT -#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" -#endif - static const char *send_command = NULL; static gboolean use_xnest = FALSE; static gboolean no_lock = FALSE; @@ -153,530 +134,6 @@ calc_pi (void) } } -static gboolean -create_transient_display (GDBusConnection *connection, - GError **error) -{ - GError *local_error = NULL; - GVariant *reply; - const char *value; - - reply = g_dbus_connection_call_sync (connection, - GDM_DBUS_NAME, - GDM_DBUS_LOCAL_DISPLAY_FACTORY_PATH, - GDM_DBUS_LOCAL_DISPLAY_FACTORY_INTERFACE, - "CreateTransientDisplay", - NULL, /* parameters */ - G_VARIANT_TYPE ("(o)"), - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to create transient display: %s", local_error->message); - g_propagate_error (error, local_error); - return FALSE; - } - - g_variant_get (reply, "(&o)", &value); - g_debug ("Started %s", value); - - g_variant_unref (reply); - return TRUE; -} - -#ifdef WITH_CONSOLE_KIT - -static gboolean -get_current_session_id (GDBusConnection *connection, - char **session_id) -{ - GError *local_error = NULL; - GVariant *reply; - - reply = g_dbus_connection_call_sync (connection, - CK_NAME, - CK_MANAGER_PATH, - CK_MANAGER_INTERFACE, - "GetCurrentSession", - NULL, /* parameters */ - G_VARIANT_TYPE ("(o)"), - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to determine session: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_get (reply, "(o)", session_id); - g_variant_unref (reply); - - return TRUE; -} - -static gboolean -get_seat_id_for_session (GDBusConnection *connection, - const char *session_id, - char **seat_id) -{ - GError *local_error = NULL; - GVariant *reply; - - reply = g_dbus_connection_call_sync (connection, - CK_NAME, - session_id, - CK_SESSION_INTERFACE, - "GetSeatId", - NULL, /* parameters */ - G_VARIANT_TYPE ("(o)"), - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to determine seat: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_get (reply, "(o)", seat_id); - g_variant_unref (reply); - - return TRUE; -} - -static char * -get_current_seat_id (GDBusConnection *connection) -{ - gboolean res; - char *session_id; - char *seat_id; - - session_id = NULL; - seat_id = NULL; - - res = get_current_session_id (connection, &session_id); - if (res) { - res = get_seat_id_for_session (connection, session_id, &seat_id); - } - g_free (session_id); - - return seat_id; -} - -static gboolean -activate_session_id_for_ck (GDBusConnection *connection, - const char *seat_id, - const char *session_id) -{ - GError *local_error = NULL; - GVariant *reply; - - reply = g_dbus_connection_call_sync (connection, - CK_NAME, - seat_id, - CK_SEAT_INTERFACE, - "ActivateSession", - g_variant_new ("(o)", session_id), - NULL, - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to activate session: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_unref (reply); - - return TRUE; -} - -static gboolean -session_is_login_window (GDBusConnection *connection, - const char *session_id) -{ - GError *local_error = NULL; - GVariant *reply; - const char *value; - gboolean ret; - - reply = g_dbus_connection_call_sync (connection, - CK_NAME, - session_id, - CK_SESSION_INTERFACE, - "GetSessionType", - NULL, - G_VARIANT_TYPE ("(s)"), - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to determine session type: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_get (reply, "(&s)", &value); - - if (value == NULL || value[0] == '\0' || strcmp (value, "LoginWindow") != 0) { - ret = FALSE; - } else { - ret = TRUE; - } - - g_variant_unref (reply); - - return ret; -} - -static gboolean -seat_can_activate_sessions (GDBusConnection *connection, - const char *seat_id) -{ - GError *local_error = NULL; - GVariant *reply; - gboolean ret; - - reply = g_dbus_connection_call_sync (connection, - CK_NAME, - seat_id, - CK_SEAT_INTERFACE, - "CanActivateSessions", - NULL, - G_VARIANT_TYPE ("(b)"), - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to determine if can activate sessions: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_get (reply, "(b)", &ret); - g_variant_unref (reply); - - return ret; -} - -static const char ** -seat_get_sessions (GDBusConnection *connection, - const char *seat_id) -{ - GError *local_error = NULL; - GVariant *reply; - const char **value; - - reply = g_dbus_connection_call_sync (connection, - CK_NAME, - seat_id, - CK_SEAT_INTERFACE, - "GetSessions", - NULL, - G_VARIANT_TYPE ("(ao)"), - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to list sessions: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_get (reply, "(^ao)", &value); - g_variant_unref (reply); - - return value; -} - -static gboolean -get_login_window_session_id_for_ck (GDBusConnection *connection, - const char *seat_id, - char **session_id) -{ - gboolean can_activate_sessions; - const char **sessions; - int i; - - *session_id = NULL; - sessions = NULL; - - g_debug ("checking if seat can activate sessions"); - - can_activate_sessions = seat_can_activate_sessions (connection, seat_id); - if (! can_activate_sessions) { - g_debug ("seat is unable to activate sessions"); - return FALSE; - } - - sessions = seat_get_sessions (connection, seat_id); - for (i = 0; sessions [i] != NULL; i++) { - const char *ssid; - - ssid = sessions [i]; - - if (session_is_login_window (connection, ssid)) { - *session_id = g_strdup (ssid); - break; - } - } - g_free (sessions); - - return TRUE; -} - -static gboolean -goto_login_session_for_ck (GDBusConnection *connection, - GError **error) -{ - gboolean ret; - gboolean res; - char *session_id; - char *seat_id; - - ret = FALSE; - - /* First look for any existing LoginWindow sessions on the seat. - If none are found, create a new one. */ - - seat_id = get_current_seat_id (connection); - if (seat_id == NULL || seat_id[0] == '\0') { - g_debug ("seat id is not set; can't switch sessions"); - g_set_error (error, GDM_FLEXISERVER_ERROR, 0, _("Could not identify the current session.")); - - return FALSE; - } - - res = get_login_window_session_id_for_ck (connection, seat_id, &session_id); - if (! res) { - g_set_error (error, GDM_FLEXISERVER_ERROR, 1, _("User unable to switch sessions.")); - return FALSE; - } - - if (session_id != NULL) { - res = activate_session_id_for_ck (connection, seat_id, session_id); - if (res) { - ret = TRUE; - } - } - - if (! ret && g_strcmp0 (seat_id, "/org/freedesktop/ConsoleKit/Seat1") == 0) { - res = create_transient_display (connection, error); - if (res) { - ret = TRUE; - } - } - - return ret; -} -#endif - -#ifdef WITH_SYSTEMD - -static gboolean -activate_session_id_for_systemd (GDBusConnection *connection, - const char *seat_id, - const char *session_id) -{ - GError *local_error = NULL; - GVariant *reply; - - reply = g_dbus_connection_call_sync (connection, - "org.freedesktop.login1", - "/org/freedesktop/login1", - "org.freedesktop.login1.Manager", - "ActivateSessionOnSeat", - g_variant_new ("(ss)", session_id, seat_id), - NULL, - G_DBUS_CALL_FLAGS_NONE, - -1, - NULL, &local_error); - if (reply == NULL) { - g_warning ("Unable to activate session: %s", local_error->message); - g_error_free (local_error); - return FALSE; - } - - g_variant_unref (reply); - - return TRUE; -} - -static gboolean -get_login_window_session_id_for_systemd (const char *seat_id, - char **session_id) -{ - gboolean ret; - int res, i; - char **sessions; - char *service_class; - char *state; - - res = sd_seat_get_sessions (seat_id, &sessions, NULL, NULL); - if (res < 0) { - g_debug ("Failed to determine sessions: %s", strerror (-res)); - return FALSE; - } - - if (sessions == NULL || sessions[0] == NULL) { - *session_id = NULL; - ret = TRUE; - goto out; - } - - for (i = 0; sessions[i]; i ++) { - res = sd_session_get_class (sessions[i], &service_class); - if (res < 0) { - g_debug ("failed to determine class of session %s: %s", sessions[i], strerror (-res)); - ret = FALSE; - goto out; - } - - if (strcmp (service_class, "greeter") != 0) { - free (service_class); - continue; - } - - free (service_class); - - ret = sd_session_get_state (sessions[i], &state); - if (ret < 0) { - g_debug ("failed to determine state of session %s: %s", sessions[i], strerror (-res)); - ret = FALSE; - goto out; - } - - if (g_strcmp0 (state, "closing") == 0) { - free (state); - continue; - } - free (state); - - *session_id = g_strdup (sessions[i]); - ret = TRUE; - break; - - } - - *session_id = NULL; - ret = TRUE; - -out: - for (i = 0; sessions[i]; i ++) { - free (sessions[i]); - } - - free (sessions); - - return ret; -} - -static gboolean -goto_login_session_for_systemd (GDBusConnection *connection, - GError **error) -{ - gboolean ret; - int res; - char *our_session; - char *session_id; - char *seat_id; - - ret = FALSE; - session_id = NULL; - seat_id = NULL; - - /* First look for any existing LoginWindow sessions on the seat. - If none are found, create a new one. */ - - /* Note that we mostly use free () here, instead of g_free () - * since the data allocated is from libsystemd-logind, which - * does not use GLib's g_malloc (). */ - - res = sd_pid_get_session (0, &our_session); - if (res < 0) { - g_debug ("failed to determine own session: %s", strerror (-res)); - g_set_error (error, GDM_FLEXISERVER_ERROR, 0, _("Could not identify the current session.")); - - return FALSE; - } - - res = sd_session_get_seat (our_session, &seat_id); - free (our_session); - if (res < 0) { - g_debug ("failed to determine own seat: %s", strerror (-res)); - g_set_error (error, GDM_FLEXISERVER_ERROR, 0, _("Could not identify the current seat.")); - - return FALSE; - } - - res = sd_seat_can_multi_session (seat_id); - if (res < 0) { - free (seat_id); - - g_debug ("failed to determine whether seat can do multi session: %s", strerror (-res)); - g_set_error (error, GDM_FLEXISERVER_ERROR, 0, _("The system is unable to determine whether to switch to an existing login screen or start up a new login screen.")); - - return FALSE; - } - - if (res == 0) { - free (seat_id); - - g_set_error (error, GDM_FLEXISERVER_ERROR, 0, _("The system is unable to start up a new login screen.")); - - return FALSE; - } - - res = get_login_window_session_id_for_systemd (seat_id, &session_id); - if (res && session_id != NULL) { - res = activate_session_id_for_systemd (connection, seat_id, session_id); - - if (res) { - ret = TRUE; - } - } - - if (! ret && g_strcmp0 (seat_id, "seat0") == 0) { - res = create_transient_display (connection, error); - if (res) { - ret = TRUE; - } - } - - free (seat_id); - g_free (session_id); - - return ret; -} -#endif - -static gboolean -goto_login_session (GError **error) -{ - GError *local_error; - GDBusConnection *connection; - - local_error = NULL; - connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &local_error); - if (connection == NULL) { - g_debug ("Failed to connect to the D-Bus daemon: %s", local_error->message); - g_propagate_error (error, local_error); - return FALSE; - } - -#ifdef WITH_SYSTEMD - if (LOGIND_RUNNING()) { - return goto_login_session_for_systemd (connection, error); - } -#endif - -#ifdef WITH_CONSOLE_KIT - return goto_login_session_for_ck (connection, error); -#endif -} - int main (int argc, char *argv[]) { @@ -726,7 +183,7 @@ main (int argc, char *argv[]) } error = NULL; - res = goto_login_session (&error); + res = gdm_goto_login_session (&error); if (! res) { GtkWidget *dialog; char *message; |