391 lines
10 KiB
C
391 lines
10 KiB
C
/**
|
|
* xrdp: A Remote Desktop Protocol server.
|
|
*
|
|
* Copyright (C) Jay Sorg 2004-2012
|
|
*
|
|
* 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 sesman.c
|
|
* @brief Main program file
|
|
* @author Jay Sorg
|
|
*
|
|
*/
|
|
|
|
#include "sesman.h"
|
|
|
|
int g_sck;
|
|
int g_pid;
|
|
unsigned char g_fixedkey[8] = { 23, 82, 107, 6, 35, 78, 88, 7 };
|
|
struct config_sesman *g_cfg; /* defined in config.h */
|
|
|
|
tbus g_term_event = 0;
|
|
tbus g_sync_event = 0;
|
|
|
|
extern int g_thread_sck; /* in thread.c */
|
|
|
|
/******************************************************************************/
|
|
/**
|
|
*
|
|
* @brief Starts sesman main loop
|
|
*
|
|
*/
|
|
static void DEFAULT_CC
|
|
sesman_main_loop(void)
|
|
{
|
|
int in_sck;
|
|
int error;
|
|
int robjs_count;
|
|
int cont;
|
|
tbus sck_obj;
|
|
tbus robjs[8];
|
|
|
|
/*main program loop*/
|
|
log_message(LOG_LEVEL_INFO, "listening...");
|
|
g_sck = g_tcp_socket();
|
|
g_tcp_set_non_blocking(g_sck);
|
|
error = scp_tcp_bind(g_sck, g_cfg->listen_address, g_cfg->listen_port);
|
|
|
|
if (error == 0)
|
|
{
|
|
error = g_tcp_listen(g_sck);
|
|
|
|
if (error == 0)
|
|
{
|
|
sck_obj = g_create_wait_obj_from_socket(g_sck, 0);
|
|
cont = 1;
|
|
|
|
while (cont)
|
|
{
|
|
/* build the wait obj list */
|
|
robjs_count = 0;
|
|
robjs[robjs_count++] = sck_obj;
|
|
robjs[robjs_count++] = g_term_event;
|
|
robjs[robjs_count++] = g_sync_event;
|
|
|
|
/* wait */
|
|
if (g_obj_wait(robjs, robjs_count, 0, 0, -1) != 0)
|
|
{
|
|
/* error, should not get here */
|
|
g_sleep(100);
|
|
}
|
|
|
|
if (g_is_wait_obj_set(g_term_event)) /* term */
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (g_is_wait_obj_set(g_sync_event)) /* sync */
|
|
{
|
|
g_reset_wait_obj(g_sync_event);
|
|
session_sync_start();
|
|
}
|
|
|
|
if (g_is_wait_obj_set(sck_obj)) /* incoming connection */
|
|
{
|
|
in_sck = g_tcp_accept(g_sck);
|
|
|
|
if ((in_sck == -1) && g_tcp_last_error_would_block(g_sck))
|
|
{
|
|
/* should not get here */
|
|
g_sleep(100);
|
|
}
|
|
else if (in_sck == -1)
|
|
{
|
|
/* error, should not get here */
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
/* we've got a connection, so we pass it to scp code */
|
|
LOG_DBG("new connection");
|
|
thread_scp_start(in_sck);
|
|
/* todo, do we have to wait here ? */
|
|
}
|
|
}
|
|
}
|
|
|
|
g_delete_wait_obj_from_socket(sck_obj);
|
|
}
|
|
else
|
|
{
|
|
log_message(LOG_LEVEL_ERROR, "listen error %d (%s)",
|
|
g_get_errno(), g_get_strerror());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
log_message(LOG_LEVEL_ERROR, "bind error on "
|
|
"port '%s': %d (%s)", g_cfg->listen_port,
|
|
g_get_errno(), g_get_strerror());
|
|
}
|
|
|
|
g_tcp_close(g_sck);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
int DEFAULT_CC
|
|
main(int argc, char **argv)
|
|
{
|
|
int fd;
|
|
enum logReturns error;
|
|
int daemon = 1;
|
|
int pid;
|
|
char pid_s[8];
|
|
char text[256];
|
|
char pid_file[256];
|
|
char cfg_file[256];
|
|
|
|
g_init("xrdp-sesman");
|
|
g_snprintf(pid_file, 255, "%s/xrdp-sesman.pid", XRDP_PID_PATH);
|
|
|
|
if (1 == argc)
|
|
{
|
|
/* no options on command line. normal startup */
|
|
g_printf("starting sesman...\n");
|
|
daemon = 1;
|
|
}
|
|
else if ((2 == argc) && ((0 == g_strcasecmp(argv[1], "--nodaemon")) ||
|
|
(0 == g_strcasecmp(argv[1], "-nodaemon")) ||
|
|
(0 == g_strcasecmp(argv[1], "-n")) ||
|
|
(0 == g_strcasecmp(argv[1], "-ns"))))
|
|
{
|
|
/* starts sesman not daemonized */
|
|
g_printf("starting sesman in foregroud...\n");
|
|
daemon = 0;
|
|
}
|
|
else if ((2 == argc) && ((0 == g_strcasecmp(argv[1], "--help")) ||
|
|
(0 == g_strcasecmp(argv[1], "-help")) ||
|
|
(0 == g_strcasecmp(argv[1], "-h"))))
|
|
{
|
|
/* help screen */
|
|
g_printf("sesman - xrdp session manager\n\n");
|
|
g_printf("usage: sesman [command]\n\n");
|
|
g_printf("command can be one of the following:\n");
|
|
g_printf("-n, -ns, --nodaemon starts sesman in foreground\n");
|
|
g_printf("-k, --kill kills running sesman\n");
|
|
g_printf("-h, --help shows this help\n");
|
|
g_printf("if no command is specified, sesman is started in background");
|
|
g_deinit();
|
|
g_exit(0);
|
|
}
|
|
else if ((2 == argc) && ((0 == g_strcasecmp(argv[1], "--kill")) ||
|
|
(0 == g_strcasecmp(argv[1], "-kill")) ||
|
|
(0 == g_strcasecmp(argv[1], "-k"))))
|
|
{
|
|
/* killing running sesman */
|
|
/* check if sesman is running */
|
|
if (!g_file_exist(pid_file))
|
|
{
|
|
g_printf("sesman is not running (pid file not found - %s)\n", pid_file);
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
fd = g_file_open(pid_file);
|
|
|
|
if (-1 == fd)
|
|
{
|
|
g_printf("error opening pid file[%s]: %s\n", pid_file, g_get_strerror());
|
|
return 1;
|
|
}
|
|
|
|
error = g_file_read(fd, pid_s, 7);
|
|
|
|
if (-1 == error)
|
|
{
|
|
g_printf("error reading pid file: %s\n", g_get_strerror());
|
|
g_file_close(fd);
|
|
g_deinit();
|
|
g_exit(error);
|
|
}
|
|
|
|
g_file_close(fd);
|
|
pid = g_atoi(pid_s);
|
|
|
|
error = g_sigterm(pid);
|
|
|
|
if (0 != error)
|
|
{
|
|
g_printf("error killing sesman: %s\n", g_get_strerror());
|
|
}
|
|
else
|
|
{
|
|
g_file_delete(pid_file);
|
|
}
|
|
|
|
g_deinit();
|
|
g_exit(error);
|
|
}
|
|
else
|
|
{
|
|
/* there's something strange on the command line */
|
|
g_printf("sesman - xrdp session manager\n\n");
|
|
g_printf("error: invalid command line\n");
|
|
g_printf("usage: sesman [ --nodaemon | --kill | --help ]\n");
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
if (g_file_exist(pid_file))
|
|
{
|
|
g_printf("sesman is already running.\n");
|
|
g_printf("if it's not running, try removing ");
|
|
g_printf(pid_file);
|
|
g_printf("\n");
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
/* reading config */
|
|
g_cfg = g_malloc(sizeof(struct config_sesman), 1);
|
|
|
|
if (0 == g_cfg)
|
|
{
|
|
g_printf("error creating config: quitting.\n");
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
//g_cfg->log.fd = -1; /* don't use logging before reading its config */
|
|
if (0 != config_read(g_cfg))
|
|
{
|
|
g_printf("error reading config: %s\nquitting.\n", g_get_strerror());
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
g_snprintf(cfg_file, 255, "%s/sesman.ini", XRDP_CFG_PATH);
|
|
|
|
/* starting logging subsystem */
|
|
error = log_start(cfg_file, "XRDP-sesman");
|
|
|
|
if (error != LOG_STARTUP_OK)
|
|
{
|
|
switch (error)
|
|
{
|
|
case LOG_ERROR_MALLOC:
|
|
g_writeln("error on malloc. cannot start logging. quitting.");
|
|
break;
|
|
case LOG_ERROR_FILE_OPEN:
|
|
g_writeln("error opening log file [%s]. quitting.",
|
|
getLogFile(text, 255));
|
|
break;
|
|
}
|
|
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
/* libscp initialization */
|
|
scp_init();
|
|
|
|
if (daemon)
|
|
{
|
|
/* start of daemonizing code */
|
|
g_pid = g_fork();
|
|
|
|
if (0 != g_pid)
|
|
{
|
|
g_deinit();
|
|
g_exit(0);
|
|
}
|
|
|
|
g_file_close(0);
|
|
g_file_close(1);
|
|
g_file_close(2);
|
|
|
|
g_file_open("/dev/null");
|
|
g_file_open("/dev/null");
|
|
g_file_open("/dev/null");
|
|
}
|
|
|
|
/* initializing locks */
|
|
lock_init();
|
|
|
|
/* signal handling */
|
|
g_pid = g_getpid();
|
|
/* old style signal handling is now managed synchronously by a
|
|
* separate thread. uncomment this block if you need old style
|
|
* signal handling and comment out thread_sighandler_start()
|
|
* going back to old style for the time being
|
|
* problem with the sigaddset functions in sig.c - jts */
|
|
#if 1
|
|
g_signal_hang_up(sig_sesman_reload_cfg); /* SIGHUP */
|
|
g_signal_user_interrupt(sig_sesman_shutdown); /* SIGINT */
|
|
g_signal_kill(sig_sesman_shutdown); /* SIGKILL */
|
|
g_signal_terminate(sig_sesman_shutdown); /* SIGTERM */
|
|
g_signal_child_stop(sig_sesman_session_end); /* SIGCHLD */
|
|
#endif
|
|
#if 0
|
|
thread_sighandler_start();
|
|
#endif
|
|
|
|
if (daemon)
|
|
{
|
|
/* writing pid file */
|
|
fd = g_file_open(pid_file);
|
|
|
|
if (-1 == fd)
|
|
{
|
|
log_message(LOG_LEVEL_ERROR,
|
|
"error opening pid file[%s]: %s",
|
|
pid_file, g_get_strerror());
|
|
log_end();
|
|
g_deinit();
|
|
g_exit(1);
|
|
}
|
|
|
|
g_sprintf(pid_s, "%d", g_pid);
|
|
g_file_write(fd, pid_s, g_strlen(pid_s));
|
|
g_file_close(fd);
|
|
}
|
|
|
|
/* start program main loop */
|
|
log_message(LOG_LEVEL_ALWAYS,
|
|
"starting sesman with pid %d", g_pid);
|
|
|
|
/* make sure the /tmp/.X11-unix directory exist */
|
|
if (!g_directory_exist("/tmp/.X11-unix"))
|
|
{
|
|
g_create_dir("/tmp/.X11-unix");
|
|
g_chmod_hex("/tmp/.X11-unix", 0x1777);
|
|
}
|
|
|
|
g_snprintf(text, 255, "xrdp_sesman_%8.8x_main_term", g_pid);
|
|
g_term_event = g_create_wait_obj(text);
|
|
g_snprintf(text, 255, "xrdp_sesman_%8.8x_main_sync", g_pid);
|
|
g_sync_event = g_create_wait_obj(text);
|
|
|
|
sesman_main_loop();
|
|
|
|
/* clean up PID file on exit */
|
|
if (daemon)
|
|
{
|
|
g_file_delete(pid_file);
|
|
}
|
|
|
|
g_delete_wait_obj(g_term_event);
|
|
g_delete_wait_obj(g_sync_event);
|
|
|
|
if (!daemon)
|
|
{
|
|
log_end();
|
|
}
|
|
|
|
g_deinit();
|
|
return 0;
|
|
}
|