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/*
* Copyright (C) 2010-2011 Robert Ancell.
* Author: Robert Ancell <robert.ancell@canonical.com>
*
* 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 3 of the License, or (at your option) any later
* version. See http://www.gnu.org/copyleft/gpl.html the full text of the
* license.
*/
#include <string.h>
#include "seat-xlocal.h"
#include "configuration.h"
#include "x-server-local.h"
#include "unity-system-compositor.h"
#include "wayland-session.h"
#include "plymouth.h"
#include "vt.h"
struct SeatXLocalPrivate
{
/* X server being used for XDMCP */
XServerLocal *xdmcp_x_server;
};
G_DEFINE_TYPE (SeatXLocal, seat_xlocal, SEAT_TYPE);
static XServerLocal *create_x_server (Seat *seat);
static void
seat_xlocal_setup (Seat *seat)
{
seat_set_supports_multi_session (seat, TRUE);
seat_set_share_display_server (seat, seat_get_boolean_property (seat, "xserver-share"));
SEAT_CLASS (seat_xlocal_parent_class)->setup (seat);
}
static void
check_stopped (SeatXLocal *seat)
{
if (!seat->priv->xdmcp_x_server)
SEAT_CLASS (seat_xlocal_parent_class)->stop (SEAT (seat));
}
static void
xdmcp_x_server_stopped_cb (DisplayServer *display_server, Seat *seat)
{
l_debug (seat, "XDMCP X server stopped");
g_signal_handlers_disconnect_matched (SEAT_XLOCAL (seat)->priv->xdmcp_x_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
SEAT_XLOCAL (seat)->priv->xdmcp_x_server = NULL;
g_object_unref (display_server);
if (seat_get_is_stopping (seat))
check_stopped (SEAT_XLOCAL (seat));
else
seat_stop (seat);
}
static gboolean
seat_xlocal_start (Seat *seat)
{
const gchar *xdmcp_manager = NULL;
/* If running as an XDMCP client then just start an X server */
xdmcp_manager = seat_get_string_property (seat, "xdmcp-manager");
if (xdmcp_manager)
{
SeatXLocal *s = SEAT_XLOCAL (seat);
const gchar *key_name = NULL;
gint port = 0;
s->priv->xdmcp_x_server = create_x_server (seat);
x_server_local_set_xdmcp_server (s->priv->xdmcp_x_server, xdmcp_manager);
port = seat_get_integer_property (seat, "xdmcp-port");
if (port > 0)
x_server_local_set_xdmcp_port (s->priv->xdmcp_x_server, port);
key_name = seat_get_string_property (seat, "xdmcp-key");
if (key_name)
{
gchar *path;
GKeyFile *keys;
gboolean result;
GError *error = NULL;
path = g_build_filename (config_get_directory (config_get_instance ()), "keys.conf", NULL);
keys = g_key_file_new ();
result = g_key_file_load_from_file (keys, path, G_KEY_FILE_NONE, &error);
if (error)
l_debug (seat, "Error getting key %s", error->message);
g_clear_error (&error);
if (result)
{
gchar *key = NULL;
if (g_key_file_has_key (keys, "keyring", key_name, NULL))
key = g_key_file_get_string (keys, "keyring", key_name, NULL);
else
l_debug (seat, "Key %s not defined", key_name);
if (key)
x_server_local_set_xdmcp_key (s->priv->xdmcp_x_server, key);
g_free (key);
}
g_free (path);
g_key_file_free (keys);
}
g_signal_connect (s->priv->xdmcp_x_server, DISPLAY_SERVER_SIGNAL_STOPPED, G_CALLBACK (xdmcp_x_server_stopped_cb), seat);
return display_server_start (DISPLAY_SERVER (s->priv->xdmcp_x_server));
}
return SEAT_CLASS (seat_xlocal_parent_class)->start (seat);
}
static void
display_server_ready_cb (DisplayServer *display_server, Seat *seat)
{
/* Quit Plymouth */
plymouth_quit (TRUE);
}
static void
display_server_transition_plymouth_cb (DisplayServer *display_server, Seat *seat)
{
/* Quit Plymouth if we didn't do the transition */
if (plymouth_get_is_running ())
plymouth_quit (FALSE);
g_signal_handlers_disconnect_matched (display_server, G_SIGNAL_MATCH_FUNC, 0, 0, NULL, display_server_transition_plymouth_cb, NULL);
}
static gint
get_vt (Seat *seat, DisplayServer *display_server)
{
gint vt = -1;
const gchar *xdg_seat = seat_get_name (seat);
if (strcmp (xdg_seat, "seat0") != 0)
return vt;
/* If Plymouth is running, stop it */
if (plymouth_get_is_active () && plymouth_has_active_vt ())
{
gint active_vt = vt_get_active ();
if (active_vt >= vt_get_min ())
{
vt = active_vt;
g_signal_connect (display_server, DISPLAY_SERVER_SIGNAL_READY, G_CALLBACK (display_server_ready_cb), seat);
g_signal_connect (display_server, DISPLAY_SERVER_SIGNAL_STOPPED, G_CALLBACK (display_server_transition_plymouth_cb), seat);
plymouth_deactivate ();
}
else
l_debug (seat, "Plymouth is running on VT %d, but this is less than the configured minimum of %d so not replacing it", active_vt, vt_get_min ());
}
if (plymouth_get_is_active ())
plymouth_quit (FALSE);
if (vt < 0)
vt = vt_get_unused ();
return vt;
}
static XServerLocal *
create_x_server (Seat *seat)
{
XServerLocal *x_server;
gchar *number;
XAuthority *cookie;
const gchar *command = NULL, *layout = NULL, *config_file = NULL;
gboolean allow_tcp;
gint vt;
x_server = x_server_local_new ();
vt = get_vt (seat, DISPLAY_SERVER (x_server));
if (vt >= 0)
x_server_local_set_vt (x_server, vt);
if (vt > 0)
l_debug (seat, "Starting local X display on VT %d", vt);
else
l_debug (seat, "Starting local X display");
/* If running inside an X server use Xephyr instead */
if (g_getenv ("DISPLAY"))
command = "Xephyr";
if (!command)
command = seat_get_string_property (seat, "xserver-command");
if (command)
x_server_local_set_command (x_server, command);
number = g_strdup_printf ("%d", x_server_get_display_number (X_SERVER (x_server)));
cookie = x_authority_new_local_cookie (number);
x_server_set_authority (X_SERVER (x_server), cookie);
g_free (number);
g_object_unref (cookie);
layout = seat_get_string_property (seat, "xserver-layout");
if (layout)
x_server_local_set_layout (x_server, layout);
x_server_local_set_xdg_seat (x_server, seat_get_name (seat));
config_file = seat_get_string_property (seat, "xserver-config");
if (config_file)
x_server_local_set_config (x_server, config_file);
allow_tcp = seat_get_boolean_property (seat, "xserver-allow-tcp");
x_server_local_set_allow_tcp (x_server, allow_tcp);
return x_server;
}
static DisplayServer *
create_unity_system_compositor (Seat *seat)
{
UnitySystemCompositor *compositor;
const gchar *command;
gchar *socket_name;
gint vt, timeout, i;
compositor = unity_system_compositor_new ();
command = seat_get_string_property (seat, "unity-compositor-command");
if (command)
unity_system_compositor_set_command (compositor, command);
timeout = seat_get_integer_property (seat, "unity-compositor-timeout");
if (timeout <= 0)
timeout = 60;
unity_system_compositor_set_timeout (compositor, timeout);
vt = get_vt (seat, DISPLAY_SERVER (compositor));
if (vt >= 0)
unity_system_compositor_set_vt (compositor, vt);
for (i = 0; ; i++)
{
socket_name = g_strdup_printf ("/run/lightdm-mir-%d", i);
if (!g_file_test (socket_name, G_FILE_TEST_EXISTS))
break;
}
unity_system_compositor_set_socket (compositor, socket_name);
g_free (socket_name);
return DISPLAY_SERVER (compositor);
}
static DisplayServer *
create_wayland_session (Seat *seat)
{
WaylandSession *session;
gint vt;
session = wayland_session_new ();
vt = get_vt (seat, DISPLAY_SERVER (session));
if (vt >= 0)
wayland_session_set_vt (session, vt);
return DISPLAY_SERVER (session);
}
static DisplayServer *
seat_xlocal_create_display_server (Seat *seat, Session *session)
{
const gchar *session_type;
session_type = session_get_session_type (session);
if (strcmp (session_type, "x") == 0)
return DISPLAY_SERVER (create_x_server (seat));
else if (strcmp (session_type, "mir") == 0)
return create_unity_system_compositor (seat);
else if (strcmp (session_type, "wayland") == 0)
return create_wayland_session (seat);
else if (strcmp (session_type, "mir-container") == 0)
{
DisplayServer *compositor;
const gchar *compositor_command;
compositor = create_unity_system_compositor (seat);
compositor_command = session_config_get_compositor_command (session_get_config (session));
if (compositor_command)
unity_system_compositor_set_command (UNITY_SYSTEM_COMPOSITOR (compositor), compositor_command);
return compositor;
}
else
{
l_warning (seat, "Can't create unsupported display server '%s'", session_type);
return NULL;
}
}
static GreeterSession *
seat_xlocal_create_greeter_session (Seat *seat)
{
GreeterSession *greeter_session;
greeter_session = SEAT_CLASS (seat_xlocal_parent_class)->create_greeter_session (seat);
session_set_env (SESSION (greeter_session), "XDG_SEAT", seat_get_name (seat));
return greeter_session;
}
static Session *
seat_xlocal_create_session (Seat *seat)
{
Session *session;
session = SEAT_CLASS (seat_xlocal_parent_class)->create_session (seat);
session_set_env (SESSION (session), "XDG_SEAT", seat_get_name (seat));
return session;
}
static void
seat_xlocal_set_active_session (Seat *seat, Session *session)
{
DisplayServer *display_server;
display_server = session_get_display_server (session);
gint vt = display_server_get_vt (display_server);
if (vt >= 0)
vt_set_active (vt);
if (IS_UNITY_SYSTEM_COMPOSITOR (display_server))
unity_system_compositor_set_active_session (UNITY_SYSTEM_COMPOSITOR (display_server), session_get_env (session, "MIR_SERVER_NAME"));
SEAT_CLASS (seat_xlocal_parent_class)->set_active_session (seat, session);
}
static Session *
seat_xlocal_get_active_session (Seat *seat)
{
gint vt;
GList *link;
vt = vt_get_active ();
if (vt < 0)
return NULL;
for (link = seat_get_sessions (seat); link; link = link->next)
{
Session *session = link->data;
DisplayServer *display_server;
display_server = session_get_display_server (session);
if (display_server && display_server_get_vt (display_server) == vt)
return session;
}
return NULL;
}
static void
seat_xlocal_run_script (Seat *seat, DisplayServer *display_server, Process *script)
{
if (IS_X_SERVER_LOCAL (display_server))
{
const gchar *path;
XServerLocal *x_server;
x_server = X_SERVER_LOCAL (display_server);
path = x_server_local_get_authority_file_path (x_server);
process_set_env (script, "DISPLAY", x_server_get_address (X_SERVER (x_server)));
process_set_env (script, "XAUTHORITY", path);
}
SEAT_CLASS (seat_xlocal_parent_class)->run_script (seat, display_server, script);
}
static void
seat_xlocal_stop (Seat *seat)
{
/* Stop the XDMCP X server first */
if (SEAT_XLOCAL (seat)->priv->xdmcp_x_server)
display_server_stop (DISPLAY_SERVER (SEAT_XLOCAL (seat)->priv->xdmcp_x_server));
check_stopped (SEAT_XLOCAL (seat));
}
static void
seat_xlocal_init (SeatXLocal *seat)
{
seat->priv = G_TYPE_INSTANCE_GET_PRIVATE (seat, SEAT_XLOCAL_TYPE, SeatXLocalPrivate);
}
static void
seat_xlocal_finalize (GObject *object)
{
SeatXLocal *seat = SEAT_XLOCAL (object);
if (seat->priv->xdmcp_x_server)
{
g_signal_handlers_disconnect_matched (seat->priv->xdmcp_x_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, seat);
g_object_unref (seat->priv->xdmcp_x_server);
}
G_OBJECT_CLASS (seat_xlocal_parent_class)->finalize (object);
}
static void
seat_xlocal_class_init (SeatXLocalClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
SeatClass *seat_class = SEAT_CLASS (klass);
object_class->finalize = seat_xlocal_finalize;
seat_class->setup = seat_xlocal_setup;
seat_class->start = seat_xlocal_start;
seat_class->create_display_server = seat_xlocal_create_display_server;
seat_class->create_greeter_session = seat_xlocal_create_greeter_session;
seat_class->create_session = seat_xlocal_create_session;
seat_class->set_active_session = seat_xlocal_set_active_session;
seat_class->get_active_session = seat_xlocal_get_active_session;
seat_class->run_script = seat_xlocal_run_script;
seat_class->stop = seat_xlocal_stop;
g_type_class_add_private (klass, sizeof (SeatXLocalPrivate));
}
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