[gdm/wip/wayland: 2/10] utils: move login screen jumping code to common
- From: Ray Strode <halfline src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gdm/wip/wayland: 2/10] utils: move login screen jumping code to common
- Date: Thu, 5 Dec 2013 15:42:45 +0000 (UTC)
commit 73fb37737da40390b28444b0fdb1602faec80213
Author: Ray Strode <rstrode redhat com>
Date: Wed Sep 18 15:21:02 2013 -0400
utils: move login screen jumping code to common
flexiserver has a bunch of complicated logic i want to use in the
worker. Move that code to the common library and make flexiserver
link against the common library.
common/gdm-common.c | 545 ++++++++++++++++++++++++++++++++++++++++++++++++
common/gdm-common.h | 5 +-
utils/Makefile.am | 3 +
utils/gdmflexiserver.c | 545 +-----------------------------------------------
4 files changed, 553 insertions(+), 545 deletions(-)
---
diff --git a/common/gdm-common.c b/common/gdm-common.c
index ae6129c..969e655 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)
{
@@ -532,3 +554,526 @@ 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 f9033aa..4f7b55a 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
gboolean gdm_is_version_unstable (void);
@@ -63,7 +66,7 @@ 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 8b400f4..992ba6c 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 5a4d1ea..8d53863 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[])
{
@@ -730,7 +187,7 @@ main (int argc, char *argv[])
}
error = NULL;
- res = goto_login_session (&error);
+ res = gdm_goto_login_session (&error);
if (! res) {
GtkWidget *dialog;
char *message;
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