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Diffstat (limited to 'daemon/gdm-xdmcp-display.c')
| -rw-r--r-- | daemon/gdm-xdmcp-display.c | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/daemon/gdm-xdmcp-display.c b/daemon/gdm-xdmcp-display.c new file mode 100644 index 0000000..18e2575 --- /dev/null +++ b/daemon/gdm-xdmcp-display.c @@ -0,0 +1,295 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <fcntl.h> +#include <unistd.h> +#include <string.h> +#include <signal.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <errno.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <glib-object.h> + +#include "gdm-display.h" +#include "gdm-launch-environment.h" +#include "gdm-xdmcp-display.h" + +#include "gdm-common.h" +#include "gdm-address.h" + +#include "gdm-settings.h" +#include "gdm-settings-direct.h" +#include "gdm-settings-keys.h" + +typedef struct _GdmXdmcpDisplayPrivate +{ + GdmAddress *remote_address; + gint32 session_number; + guint connection_attempts; +} GdmXdmcpDisplayPrivate; + +enum { + PROP_0, + PROP_REMOTE_ADDRESS, + PROP_SESSION_NUMBER, +}; + +#define MAX_CONNECT_ATTEMPTS 10 + +static void gdm_xdmcp_display_class_init (GdmXdmcpDisplayClass *klass); +static void gdm_xdmcp_display_init (GdmXdmcpDisplay *xdmcp_display); + +G_DEFINE_TYPE_WITH_PRIVATE (GdmXdmcpDisplay, gdm_xdmcp_display, GDM_TYPE_DISPLAY) + +gint32 +gdm_xdmcp_display_get_session_number (GdmXdmcpDisplay *display) +{ + GdmXdmcpDisplayPrivate *priv; + + g_return_val_if_fail (GDM_IS_XDMCP_DISPLAY (display), 0); + + priv = gdm_xdmcp_display_get_instance_private (display); + return priv->session_number; +} + +GdmAddress * +gdm_xdmcp_display_get_remote_address (GdmXdmcpDisplay *display) +{ + GdmXdmcpDisplayPrivate *priv; + + g_return_val_if_fail (GDM_IS_XDMCP_DISPLAY (display), NULL); + + priv = gdm_xdmcp_display_get_instance_private (display); + return priv->remote_address; +} + +static void +_gdm_xdmcp_display_set_remote_address (GdmXdmcpDisplay *display, + GdmAddress *address) +{ + GdmXdmcpDisplayPrivate *priv; + + priv = gdm_xdmcp_display_get_instance_private (display); + if (priv->remote_address != NULL) { + gdm_address_free (priv->remote_address); + } + + g_assert (address != NULL); + + gdm_address_debug (address); + priv->remote_address = gdm_address_copy (address); +} + +static void +gdm_xdmcp_display_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GdmXdmcpDisplay *self; + GdmXdmcpDisplayPrivate *priv; + + self = GDM_XDMCP_DISPLAY (object); + priv = gdm_xdmcp_display_get_instance_private (self); + + switch (prop_id) { + case PROP_REMOTE_ADDRESS: + _gdm_xdmcp_display_set_remote_address (self, g_value_get_boxed (value)); + break; + case PROP_SESSION_NUMBER: + priv->session_number = g_value_get_int (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gdm_xdmcp_display_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GdmXdmcpDisplay *self; + GdmXdmcpDisplayPrivate *priv; + + self = GDM_XDMCP_DISPLAY (object); + priv = gdm_xdmcp_display_get_instance_private (self); + + switch (prop_id) { + case PROP_REMOTE_ADDRESS: + g_value_set_boxed (value, priv->remote_address); + break; + case PROP_SESSION_NUMBER: + g_value_set_int (value, priv->session_number); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static gboolean +gdm_xdmcp_display_prepare (GdmDisplay *display) +{ + GdmXdmcpDisplay *self = GDM_XDMCP_DISPLAY (display); + GdmLaunchEnvironment *launch_environment; + char *display_name; + char *seat_id; + char *hostname; + + launch_environment = NULL; + display_name = NULL; + seat_id = NULL; + hostname = NULL; + + g_object_get (self, + "x11-display-name", &display_name, + "seat-id", &seat_id, + "remote-hostname", &hostname, + "launch-environment", &launch_environment, + NULL); + + if (launch_environment == NULL) { + launch_environment = gdm_create_greeter_launch_environment (display_name, + seat_id, + NULL, + hostname, + FALSE); + g_object_set (self, "launch-environment", launch_environment, NULL); + g_object_unref (launch_environment); + } + + if (!gdm_display_create_authority (display)) { + g_warning ("Unable to set up access control for display %s", + display_name); + return FALSE; + } + + return GDM_DISPLAY_CLASS (gdm_xdmcp_display_parent_class)->prepare (display); +} + +static gboolean +idle_connect_to_display (GdmXdmcpDisplay *self) +{ + GdmXdmcpDisplayPrivate *priv; + gboolean res; + + priv = gdm_xdmcp_display_get_instance_private (self); + priv->connection_attempts++; + + res = gdm_display_connect (GDM_DISPLAY (self)); + if (res) { + g_object_set (G_OBJECT (self), "status", GDM_DISPLAY_MANAGED, NULL); + } else { + if (priv->connection_attempts >= MAX_CONNECT_ATTEMPTS) { + g_warning ("Unable to connect to display after %d tries - bailing out", priv->connection_attempts); + gdm_display_unmanage (GDM_DISPLAY (self)); + return FALSE; + } + return TRUE; + } + + return FALSE; +} + +static void +gdm_xdmcp_display_manage (GdmDisplay *display) +{ + GdmXdmcpDisplay *self = GDM_XDMCP_DISPLAY (display); + + g_timeout_add (500, (GSourceFunc)idle_connect_to_display, self); +} + +static void +gdm_xdmcp_display_class_init (GdmXdmcpDisplayClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GdmDisplayClass *display_class = GDM_DISPLAY_CLASS (klass); + + object_class->get_property = gdm_xdmcp_display_get_property; + object_class->set_property = gdm_xdmcp_display_set_property; + + display_class->prepare = gdm_xdmcp_display_prepare; + display_class->manage = gdm_xdmcp_display_manage; + + g_object_class_install_property (object_class, + PROP_REMOTE_ADDRESS, + g_param_spec_boxed ("remote-address", + "Remote address", + "Remote address", + GDM_TYPE_ADDRESS, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (object_class, + PROP_SESSION_NUMBER, + g_param_spec_int ("session-number", + "session-number", + "session-number", + G_MININT, + G_MAXINT, + 0, + G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS)); + +} + +static void +gdm_xdmcp_display_init (GdmXdmcpDisplay *xdmcp_display) +{ + + gboolean allow_remote_autologin; + + allow_remote_autologin = FALSE; + gdm_settings_direct_get_boolean (GDM_KEY_ALLOW_REMOTE_AUTOLOGIN, &allow_remote_autologin); + + g_object_set (G_OBJECT (xdmcp_display), "allow-timed-login", allow_remote_autologin, NULL); +} + +GdmDisplay * +gdm_xdmcp_display_new (const char *hostname, + int number, + GdmAddress *address, + gint32 session_number) +{ + GObject *object; + char *x11_display; + + x11_display = g_strdup_printf ("%s:%d", hostname, number); + object = g_object_new (GDM_TYPE_XDMCP_DISPLAY, + "remote-hostname", hostname, + "x11-display-number", number, + "x11-display-name", x11_display, + "is-local", FALSE, + "remote-address", address, + "session-number", session_number, + NULL); + g_free (x11_display); + + return GDM_DISPLAY (object); +} |