/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * * Copyright (C) 2007 William Jon McCann * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include "gdm-display.h" #include "gdm-display-glue.h" #include "gdm-display-access-file.h" #include "gdm-slave-proxy.h" static guint32 display_serial = 1; #define GDM_DISPLAY_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_DISPLAY, GdmDisplayPrivate)) #define DEFAULT_SLAVE_COMMAND LIBEXECDIR "/gdm-simple-slave" struct GdmDisplayPrivate { char *id; char *seat_id; char *remote_hostname; int x11_display_number; char *x11_display_name; int status; time_t creation_time; GTimer *slave_timer; char *slave_command; char *x11_cookie; gsize x11_cookie_size; GdmDisplayAccessFile *access_file; gboolean is_local; guint finish_idle_id; GdmSlaveProxy *slave_proxy; DBusGConnection *connection; GdmDisplayAccessFile *user_access_file; }; enum { PROP_0, PROP_ID, PROP_STATUS, PROP_SEAT_ID, PROP_REMOTE_HOSTNAME, PROP_X11_DISPLAY_NUMBER, PROP_X11_DISPLAY_NAME, PROP_X11_COOKIE, PROP_X11_AUTHORITY_FILE, PROP_IS_LOCAL, PROP_SLAVE_COMMAND, }; static void gdm_display_class_init (GdmDisplayClass *klass); static void gdm_display_init (GdmDisplay *display); static void gdm_display_finalize (GObject *object); G_DEFINE_ABSTRACT_TYPE (GdmDisplay, gdm_display, G_TYPE_OBJECT) GQuark gdm_display_error_quark (void) { static GQuark ret = 0; if (ret == 0) { ret = g_quark_from_static_string ("gdm_display_error"); } return ret; } static guint32 get_next_display_serial (void) { guint32 serial; serial = display_serial++; if ((gint32)display_serial < 0) { display_serial = 1; } return serial; } time_t gdm_display_get_creation_time (GdmDisplay *display) { g_return_val_if_fail (GDM_IS_DISPLAY (display), 0); return display->priv->creation_time; } int gdm_display_get_status (GdmDisplay *display) { g_return_val_if_fail (GDM_IS_DISPLAY (display), 0); return display->priv->status; } static GdmDisplayAccessFile * _create_access_file_for_user (GdmDisplay *display, const char *username, GError **error) { GdmDisplayAccessFile *access_file; GError *file_error; access_file = gdm_display_access_file_new (username); file_error = NULL; if (!gdm_display_access_file_open (access_file, &file_error)) { g_propagate_error (error, file_error); return NULL; } return access_file; } static gboolean gdm_display_real_create_authority (GdmDisplay *display) { GdmDisplayAccessFile *access_file; GError *error; gboolean res; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_return_val_if_fail (display->priv->access_file == NULL, FALSE); error = NULL; access_file = _create_access_file_for_user (display, "gdm", &error); if (access_file == NULL) { g_critical ("could not create display access file: %s", error->message); g_error_free (error); return FALSE; } g_free (display->priv->x11_cookie); display->priv->x11_cookie = NULL; res = gdm_display_access_file_add_display (access_file, display, &display->priv->x11_cookie, &display->priv->x11_cookie_size, &error); if (! res) { g_critical ("could not add display to access file: %s", error->message); g_error_free (error); gdm_display_access_file_close (access_file); g_object_unref (access_file); return FALSE; } display->priv->access_file = access_file; return TRUE; } gboolean gdm_display_create_authority (GdmDisplay *display) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->create_authority (display); g_object_unref (display); return ret; } static gboolean gdm_display_real_add_user_authorization (GdmDisplay *display, const char *username, char **filename, GError **error) { GdmDisplayAccessFile *access_file; GError *access_file_error; gboolean res; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_return_val_if_fail (display->priv->access_file != NULL, FALSE); g_debug ("GdmDisplay: Adding user authorization for %s", username); access_file_error = NULL; access_file = _create_access_file_for_user (display, username, &access_file_error); if (access_file == NULL) { g_propagate_error (error, access_file_error); return FALSE; } res = gdm_display_access_file_add_display_with_cookie (access_file, display, display->priv->x11_cookie, display->priv->x11_cookie_size, &access_file_error); if (! res) { g_debug ("GdmDisplay: Unable to add user authorization for %s: %s", username, access_file_error->message); g_propagate_error (error, access_file_error); gdm_display_access_file_close (access_file); g_object_unref (access_file); return FALSE; } *filename = gdm_display_access_file_get_path (access_file); display->priv->user_access_file = access_file; g_debug ("GdmDisplay: Added user authorization for %s: %s", username, *filename); return TRUE; } gboolean gdm_display_add_user_authorization (GdmDisplay *display, const char *username, char **filename, GError **error) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: Adding authorization for user:%s on display %s", username, display->priv->x11_display_name); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->add_user_authorization (display, username, filename, error); g_object_unref (display); return ret; } static gboolean gdm_display_real_set_slave_bus_name (GdmDisplay *display, const char *name, GError **error) { return TRUE; } gboolean gdm_display_set_slave_bus_name (GdmDisplay *display, const char *name, GError **error) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: Setting slave bus name:%s on display %s", name, display->priv->x11_display_name); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->set_slave_bus_name (display, name, error); g_object_unref (display); return ret; } static gboolean gdm_display_real_remove_user_authorization (GdmDisplay *display, const char *username, GError **error) { gdm_display_access_file_close (display->priv->user_access_file); return TRUE; } gboolean gdm_display_remove_user_authorization (GdmDisplay *display, const char *username, GError **error) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: Removing authorization for user:%s on display %s", username, display->priv->x11_display_name); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->remove_user_authorization (display, username, error); g_object_unref (display); return ret; } gboolean gdm_display_get_x11_cookie (GdmDisplay *display, char **x11_cookie, gsize *x11_cookie_size, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (x11_cookie != NULL) { *x11_cookie = g_memdup (display->priv->x11_cookie, display->priv->x11_cookie_size); } if (x11_cookie_size != NULL) { *x11_cookie_size = display->priv->x11_cookie_size; } return TRUE; } gboolean gdm_display_get_x11_authority_file (GdmDisplay *display, char **filename, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_return_val_if_fail (filename != NULL, FALSE); if (display->priv->access_file != NULL) { *filename = gdm_display_access_file_get_path (display->priv->access_file); } else { *filename = NULL; } return TRUE; } gboolean gdm_display_get_remote_hostname (GdmDisplay *display, char **hostname, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (hostname != NULL) { *hostname = g_strdup (display->priv->remote_hostname); } return TRUE; } gboolean gdm_display_get_x11_display_number (GdmDisplay *display, int *number, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (number != NULL) { *number = display->priv->x11_display_number; } return TRUE; } gboolean gdm_display_get_seat_id (GdmDisplay *display, char **seat_id, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (seat_id != NULL) { *seat_id = g_strdup (display->priv->seat_id); } return TRUE; } static gboolean finish_idle (GdmDisplay *display) { display->priv->finish_idle_id = 0; /* finish may end up finalizing object */ gdm_display_finish (display); return FALSE; } static void queue_finish (GdmDisplay *display) { if (display->priv->finish_idle_id == 0) { display->priv->finish_idle_id = g_idle_add ((GSourceFunc)finish_idle, display); } } static void slave_exited (GdmSlaveProxy *proxy, int code, GdmDisplay *display) { g_debug ("GdmDisplay: Slave exited: %d", code); queue_finish (display); } static void slave_died (GdmSlaveProxy *proxy, int signum, GdmDisplay *display) { g_debug ("GdmDisplay: Slave died: %d", signum); queue_finish (display); } static void _gdm_display_set_status (GdmDisplay *display, int status) { if (status != display->priv->status) { display->priv->status = status; g_object_notify (G_OBJECT (display), "status"); } } static gboolean gdm_display_real_manage (GdmDisplay *display) { char *command; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: manage display"); g_assert (display->priv->slave_proxy == NULL); if (!gdm_display_create_authority (display)) { g_warning ("Unable to set up access control for display %d", display->priv->x11_display_number); return FALSE; } _gdm_display_set_status (display, GDM_DISPLAY_MANAGED); display->priv->slave_proxy = gdm_slave_proxy_new (); g_signal_connect (display->priv->slave_proxy, "exited", G_CALLBACK (slave_exited), display); g_signal_connect (display->priv->slave_proxy, "died", G_CALLBACK (slave_died), display); command = g_strdup_printf ("%s --display-id %s", display->priv->slave_command, display->priv->id); gdm_slave_proxy_set_command (display->priv->slave_proxy, command); g_free (command); g_timer_start (display->priv->slave_timer); gdm_slave_proxy_start (display->priv->slave_proxy); return TRUE; } gboolean gdm_display_manage (GdmDisplay *display) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: Managing display: %s", display->priv->id); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->manage (display); g_object_unref (display); return ret; } static gboolean gdm_display_real_finish (GdmDisplay *display) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); _gdm_display_set_status (display, GDM_DISPLAY_FINISHED); g_debug ("GdmDisplay: finish display"); return TRUE; } gboolean gdm_display_finish (GdmDisplay *display) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: Finishing display: %s", display->priv->id); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->finish (display); g_object_unref (display); return ret; } static gboolean gdm_display_real_unmanage (GdmDisplay *display) { gdouble elapsed; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: unmanage display"); g_timer_stop (display->priv->slave_timer); if (display->priv->slave_proxy != NULL) { gdm_slave_proxy_stop (display->priv->slave_proxy); g_object_unref (display->priv->slave_proxy); display->priv->slave_proxy = NULL; } if (display->priv->user_access_file != NULL) { gdm_display_access_file_close (display->priv->user_access_file); g_object_unref (display->priv->user_access_file); display->priv->user_access_file = NULL; } if (display->priv->access_file != NULL) { gdm_display_access_file_close (display->priv->access_file); g_object_unref (display->priv->access_file); display->priv->access_file = NULL; } elapsed = g_timer_elapsed (display->priv->slave_timer, NULL); if (elapsed < 10) { g_warning ("GdmDisplay: display lasted %lf seconds", elapsed); _gdm_display_set_status (display, GDM_DISPLAY_FAILED); } else { _gdm_display_set_status (display, GDM_DISPLAY_UNMANAGED); } return TRUE; } gboolean gdm_display_unmanage (GdmDisplay *display) { gboolean ret; g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); g_debug ("GdmDisplay: Unmanaging display"); g_object_ref (display); ret = GDM_DISPLAY_GET_CLASS (display)->unmanage (display); g_object_unref (display); return ret; } gboolean gdm_display_get_id (GdmDisplay *display, char **id, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (id != NULL) { *id = g_strdup (display->priv->id); } return TRUE; } gboolean gdm_display_get_x11_display_name (GdmDisplay *display, char **x11_display, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (x11_display != NULL) { *x11_display = g_strdup (display->priv->x11_display_name); } return TRUE; } gboolean gdm_display_is_local (GdmDisplay *display, gboolean *local, GError **error) { g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE); if (local != NULL) { *local = display->priv->is_local; } return TRUE; } static void _gdm_display_set_id (GdmDisplay *display, const char *id) { g_free (display->priv->id); display->priv->id = g_strdup (id); } static void _gdm_display_set_seat_id (GdmDisplay *display, const char *seat_id) { g_free (display->priv->seat_id); display->priv->seat_id = g_strdup (seat_id); } static void _gdm_display_set_remote_hostname (GdmDisplay *display, const char *hostname) { g_free (display->priv->remote_hostname); display->priv->remote_hostname = g_strdup (hostname); } static void _gdm_display_set_x11_display_number (GdmDisplay *display, int num) { display->priv->x11_display_number = num; } static void _gdm_display_set_x11_display_name (GdmDisplay *display, const char *x11_display) { g_free (display->priv->x11_display_name); display->priv->x11_display_name = g_strdup (x11_display); } static void _gdm_display_set_x11_cookie (GdmDisplay *display, const char *x11_cookie) { g_free (display->priv->x11_cookie); display->priv->x11_cookie = g_strdup (x11_cookie); } static void _gdm_display_set_is_local (GdmDisplay *display, gboolean is_local) { display->priv->is_local = is_local; } static void _gdm_display_set_slave_command (GdmDisplay *display, const char *command) { g_free (display->priv->slave_command); display->priv->slave_command = g_strdup (command); } static void gdm_display_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GdmDisplay *self; self = GDM_DISPLAY (object); switch (prop_id) { case PROP_ID: _gdm_display_set_id (self, g_value_get_string (value)); break; case PROP_STATUS: _gdm_display_set_status (self, g_value_get_int (value)); break; case PROP_SEAT_ID: _gdm_display_set_seat_id (self, g_value_get_string (value)); break; case PROP_REMOTE_HOSTNAME: _gdm_display_set_remote_hostname (self, g_value_get_string (value)); break; case PROP_X11_DISPLAY_NUMBER: _gdm_display_set_x11_display_number (self, g_value_get_int (value)); break; case PROP_X11_DISPLAY_NAME: _gdm_display_set_x11_display_name (self, g_value_get_string (value)); break; case PROP_X11_COOKIE: _gdm_display_set_x11_cookie (self, g_value_get_string (value)); break; case PROP_IS_LOCAL: _gdm_display_set_is_local (self, g_value_get_boolean (value)); break; case PROP_SLAVE_COMMAND: _gdm_display_set_slave_command (self, g_value_get_string (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gdm_display_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GdmDisplay *self; self = GDM_DISPLAY (object); switch (prop_id) { case PROP_ID: g_value_set_string (value, self->priv->id); break; case PROP_STATUS: g_value_set_int (value, self->priv->status); break; case PROP_SEAT_ID: g_value_set_string (value, self->priv->seat_id); break; case PROP_REMOTE_HOSTNAME: g_value_set_string (value, self->priv->remote_hostname); break; case PROP_X11_DISPLAY_NUMBER: g_value_set_int (value, self->priv->x11_display_number); break; case PROP_X11_DISPLAY_NAME: g_value_set_string (value, self->priv->x11_display_name); break; case PROP_X11_COOKIE: g_value_set_string (value, self->priv->x11_cookie); break; case PROP_X11_AUTHORITY_FILE: g_value_take_string (value, gdm_display_access_file_get_path (self->priv->access_file)); break; case PROP_IS_LOCAL: g_value_set_boolean (value, self->priv->is_local); break; case PROP_SLAVE_COMMAND: g_value_set_string (value, self->priv->slave_command); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean register_display (GdmDisplay *display) { GError *error = NULL; error = NULL; display->priv->connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); if (display->priv->connection == NULL) { if (error != NULL) { g_critical ("error getting system bus: %s", error->message); g_error_free (error); } exit (1); } dbus_g_connection_register_g_object (display->priv->connection, display->priv->id, G_OBJECT (display)); return TRUE; } /* dbus-send --system --print-reply --dest=org.gnome.DisplayManager /org/gnome/DisplayManager/Display1 org.freedesktop.DBus.Introspectable.Introspect */ static GObject * gdm_display_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_properties) { GdmDisplay *display; gboolean res; display = GDM_DISPLAY (G_OBJECT_CLASS (gdm_display_parent_class)->constructor (type, n_construct_properties, construct_properties)); g_free (display->priv->id); display->priv->id = g_strdup_printf ("/org/gnome/DisplayManager/Display%u", get_next_display_serial ()); res = register_display (display); if (! res) { g_warning ("Unable to register display with system bus"); } return G_OBJECT (display); } static void gdm_display_dispose (GObject *object) { GdmDisplay *display; display = GDM_DISPLAY (object); g_debug ("GdmDisplay: Disposing display"); if (display->priv->finish_idle_id > 0) { g_source_remove (display->priv->finish_idle_id); display->priv->finish_idle_id = 0; } if (display->priv->slave_proxy != NULL) { g_object_unref (display->priv->slave_proxy); display->priv->slave_proxy = NULL; } if (display->priv->user_access_file != NULL) { gdm_display_access_file_close (display->priv->user_access_file); g_object_unref (display->priv->user_access_file); display->priv->user_access_file = NULL; } if (display->priv->access_file != NULL) { gdm_display_access_file_close (display->priv->access_file); g_object_unref (display->priv->access_file); display->priv->access_file = NULL; } G_OBJECT_CLASS (gdm_display_parent_class)->dispose (object); } static void gdm_display_class_init (GdmDisplayClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->get_property = gdm_display_get_property; object_class->set_property = gdm_display_set_property; object_class->constructor = gdm_display_constructor; object_class->dispose = gdm_display_dispose; object_class->finalize = gdm_display_finalize; klass->create_authority = gdm_display_real_create_authority; klass->add_user_authorization = gdm_display_real_add_user_authorization; klass->remove_user_authorization = gdm_display_real_remove_user_authorization; klass->set_slave_bus_name = gdm_display_real_set_slave_bus_name; klass->manage = gdm_display_real_manage; klass->finish = gdm_display_real_finish; klass->unmanage = gdm_display_real_unmanage; g_object_class_install_property (object_class, PROP_ID, g_param_spec_string ("id", "id", "id", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_REMOTE_HOSTNAME, g_param_spec_string ("remote-hostname", "remote-hostname", "remote-hostname", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_X11_DISPLAY_NUMBER, g_param_spec_int ("x11-display-number", "x11 display number", "x11 display number", -1, G_MAXINT, -1, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_X11_DISPLAY_NAME, g_param_spec_string ("x11-display-name", "x11-display-name", "x11-display-name", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property (object_class, PROP_SEAT_ID, g_param_spec_string ("seat-id", "seat id", "seat id", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_X11_COOKIE, g_param_spec_string ("x11-cookie", "cookie", "cookie", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_X11_AUTHORITY_FILE, g_param_spec_string ("x11-authority-file", "authority file", "authority file", NULL, G_PARAM_READABLE)); g_object_class_install_property (object_class, PROP_IS_LOCAL, g_param_spec_boolean ("is-local", NULL, NULL, TRUE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_SLAVE_COMMAND, g_param_spec_string ("slave-command", "slave command", "slave command", DEFAULT_SLAVE_COMMAND, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (object_class, PROP_STATUS, g_param_spec_int ("status", "status", "status", -1, G_MAXINT, GDM_DISPLAY_UNMANAGED, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_type_class_add_private (klass, sizeof (GdmDisplayPrivate)); dbus_g_object_type_install_info (GDM_TYPE_DISPLAY, &dbus_glib_gdm_display_object_info); } static void gdm_display_init (GdmDisplay *display) { display->priv = GDM_DISPLAY_GET_PRIVATE (display); display->priv->creation_time = time (NULL); display->priv->slave_timer = g_timer_new (); } static void gdm_display_finalize (GObject *object) { GdmDisplay *display; g_return_if_fail (object != NULL); g_return_if_fail (GDM_IS_DISPLAY (object)); display = GDM_DISPLAY (object); g_return_if_fail (display->priv != NULL); g_debug ("GdmDisplay: Finalizing display: %s", display->priv->id); g_free (display->priv->id); g_free (display->priv->seat_id); g_free (display->priv->remote_hostname); g_free (display->priv->x11_display_name); g_free (display->priv->x11_cookie); g_free (display->priv->slave_command); if (display->priv->access_file != NULL) { g_object_unref (display->priv->access_file); } if (display->priv->user_access_file != NULL) { g_object_unref (display->priv->user_access_file); } if (display->priv->slave_timer != NULL) { g_timer_destroy (display->priv->slave_timer); } G_OBJECT_CLASS (gdm_display_parent_class)->finalize (object); }