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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 <config.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include "greeter-session.h"
struct GreeterSessionPrivate
{
/* Greeter running inside this session */
Greeter *greeter;
};
G_DEFINE_TYPE_WITH_PRIVATE (GreeterSession, greeter_session, SESSION_TYPE)
GreeterSession *
greeter_session_new (void)
{
return g_object_new (GREETER_SESSION_TYPE, NULL);
}
Greeter *
greeter_session_get_greeter (GreeterSession *session)
{
g_return_val_if_fail (session != NULL, NULL);
return session->priv->greeter;
}
static gboolean
greeter_session_start (Session *session)
{
GreeterSession *s = GREETER_SESSION (session);
/* Create a pipe to talk with the greeter */
int to_greeter_pipe[2], from_greeter_pipe[2];
if (pipe (to_greeter_pipe) != 0 || pipe (from_greeter_pipe) != 0)
{
g_warning ("Failed to create pipes: %s", strerror (errno));
return FALSE;
}
int to_greeter_input = to_greeter_pipe[1];
int to_greeter_output = to_greeter_pipe[0];
int from_greeter_input = from_greeter_pipe[1];
int from_greeter_output = from_greeter_pipe[0];
greeter_set_file_descriptors (s->priv->greeter, to_greeter_input, from_greeter_output);
/* Don't allow the daemon end of the pipes to be accessed in child processes */
fcntl (to_greeter_input, F_SETFD, FD_CLOEXEC);
fcntl (from_greeter_output, F_SETFD, FD_CLOEXEC);
/* Let the greeter session know how to communicate with the daemon */
g_autofree gchar *to_server_value = g_strdup_printf ("%d", from_greeter_input);
session_set_env (session, "LIGHTDM_TO_SERVER_FD", to_server_value);
g_autofree gchar *from_server_value = g_strdup_printf ("%d", to_greeter_output);
session_set_env (session, "LIGHTDM_FROM_SERVER_FD", from_server_value);
gboolean result = SESSION_CLASS (greeter_session_parent_class)->start (session);
/* Close the session ends of the pipe */
close (from_greeter_input);
close (to_greeter_output);
return result;
}
static void
greeter_session_stop (Session *session)
{
GreeterSession *s = GREETER_SESSION (session);
greeter_stop (s->priv->greeter);
SESSION_CLASS (greeter_session_parent_class)->stop (session);
}
static void
greeter_session_init (GreeterSession *session)
{
session->priv = G_TYPE_INSTANCE_GET_PRIVATE (session, GREETER_SESSION_TYPE, GreeterSessionPrivate);
session->priv->greeter = greeter_new ();
}
static void
greeter_session_finalize (GObject *object)
{
GreeterSession *self = GREETER_SESSION (object);
g_clear_object (&self->priv->greeter);
G_OBJECT_CLASS (greeter_session_parent_class)->finalize (object);
}
static void
greeter_session_class_init (GreeterSessionClass *klass)
{
SessionClass *session_class = SESSION_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
session_class->start = greeter_session_start;
session_class->stop = greeter_session_stop;
object_class->finalize = greeter_session_finalize;
}
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