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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2013
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*
* @file sessvc.c
* @brief Session supervisor
* @author Simone Fedele
*
*/
#if defined(HAVE_CONFIG_H)
#include "config_ac.h"
#endif
#include "file_loc.h"
#include "os_calls.h"
#include "arch.h"
static int g_term = 0;
/*****************************************************************************/
void DEFAULT_CC
term_signal_handler(int sig)
{
g_writeln("xrdp-sessvc: term_signal_handler: got signal %d", sig);
g_term = 1;
}
/*****************************************************************************/
void DEFAULT_CC
nil_signal_handler(int sig)
{
g_writeln("xrdp-sessvc: nil_signal_handler: got signal %d", sig);
}
/******************************************************************************/
/* chansrv can exit at any time without cleaning up, it's an xlib app */
int APP_CC
chansrv_cleanup(int pid)
{
char text[256];
g_snprintf(text, 255, "/var/run/xrdp/sockdir/xrdp_chansrv_%8.8x_main_term", pid);
if (g_file_exist(text))
{
g_file_delete(text);
}
g_snprintf(text, 255, "/var/run/xrdp/sockdir/xrdp_chansrv_%8.8x_thread_done", pid);
if (g_file_exist(text))
{
g_file_delete(text);
}
return 0;
}
/******************************************************************************/
int DEFAULT_CC
main(int argc, char **argv)
{
int ret = 0;
int chansrv_pid = 0;
int wm_pid = 0;
int x_pid = 0;
int lerror = 0;
char exe_path[262];
g_init("xrdp-sessvc");
g_memset(exe_path, 0, sizeof(exe_path));
if (argc < 3)
{
g_writeln("xrdp-sessvc: exiting, not enough parameters");
g_deinit();
return 1;
}
g_signal_terminate(term_signal_handler); /* SIGTERM */
g_signal_user_interrupt(term_signal_handler); /* SIGINT */
g_signal_pipe(nil_signal_handler); /* SIGPIPE */
x_pid = g_atoi(argv[1]);
wm_pid = g_atoi(argv[2]);
g_writeln("xrdp-sessvc: waiting for X (pid %d) and WM (pid %d)",
x_pid, wm_pid);
/* run xrdp-chansrv as a separate process */
chansrv_pid = g_fork();
if (chansrv_pid == -1)
{
g_writeln("xrdp-sessvc: fork error");
g_deinit();
return 1;
}
else if (chansrv_pid == 0) /* child */
{
g_set_current_dir(XRDP_SBIN_PATH);
g_snprintf(exe_path, 261, "%s/xrdp-chansrv", XRDP_SBIN_PATH);
g_execlp3(exe_path, "xrdp-chansrv", 0);
/* should not get here */
g_writeln("xrdp-sessvc: g_execlp3() failed");
g_deinit();
return 1;
}
lerror = 0;
/* wait for window manager to get done */
ret = g_waitpid(wm_pid);
while ((ret == 0) && !g_term)
{
ret = g_waitpid(wm_pid);
g_sleep(1);
}
if (ret < 0)
{
lerror = g_get_errno();
}
g_writeln("xrdp-sessvc: WM is dead (waitpid said %d, errno is %d) "
"exiting...", ret, lerror);
/* kill channel server */
g_writeln("xrdp-sessvc: stopping channel server");
g_sigterm(chansrv_pid);
ret = g_waitpid(chansrv_pid);
while ((ret == 0) && !g_term)
{
ret = g_waitpid(chansrv_pid);
g_sleep(1);
}
chansrv_cleanup(chansrv_pid);
/* kill X server */
g_writeln("xrdp-sessvc: stopping X server");
g_sigterm(x_pid);
ret = g_waitpid(x_pid);
while ((ret == 0) && !g_term)
{
ret = g_waitpid(x_pid);
g_sleep(1);
}
g_writeln("xrdp-sessvc: clean exit");
g_deinit();
return 0;
}
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