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490 lines
12 KiB
490 lines
12 KiB
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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xrdp: A Remote Desktop Protocol server.
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Copyright (C) Jay Sorg 2004-2012
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main program
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*/
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#include "xrdp.h"
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static struct xrdp_listen* g_listen = 0;
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static long g_threadid = 0; /* main threadid */
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static long g_sync_mutex = 0;
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static long g_sync1_mutex = 0;
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static tbus g_term_event = 0;
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static tbus g_sync_event = 0;
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/* syncronize stuff */
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static int g_sync_command = 0;
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static long g_sync_result = 0;
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static long g_sync_param1 = 0;
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static long g_sync_param2 = 0;
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static long (*g_sync_func)(long param1, long param2);
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/*****************************************************************************/
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long APP_CC
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g_xrdp_sync(long (*sync_func)(long param1, long param2), long sync_param1,
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long sync_param2)
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{
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long sync_result;
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int sync_command;
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if (tc_threadid_equal(tc_get_threadid(), g_threadid))
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{
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/* this is the main thread, call the function directly */
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/* in fork mode, this always happens too */
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sync_result = sync_func(sync_param1, sync_param2);
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}
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else
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{
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tc_mutex_lock(g_sync1_mutex);
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tc_mutex_lock(g_sync_mutex);
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g_sync_param1 = sync_param1;
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g_sync_param2 = sync_param2;
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g_sync_func = sync_func;
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g_sync_command = 100;
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tc_mutex_unlock(g_sync_mutex);
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g_set_wait_obj(g_sync_event);
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do
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{
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g_sleep(100);
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tc_mutex_lock(g_sync_mutex);
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sync_command = g_sync_command;
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sync_result = g_sync_result;
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tc_mutex_unlock(g_sync_mutex);
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}
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while (sync_command != 0);
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tc_mutex_unlock(g_sync1_mutex);
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}
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return sync_result;
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}
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/*****************************************************************************/
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void DEFAULT_CC
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xrdp_shutdown(int sig)
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{
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tbus threadid;
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threadid = tc_get_threadid();
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g_writeln("shutting down");
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g_writeln("signal %d threadid %p", sig, threadid);
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if (!g_is_wait_obj_set(g_term_event))
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{
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g_set_wait_obj(g_term_event);
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}
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}
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/*****************************************************************************/
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void DEFAULT_CC
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xrdp_child(int sig)
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{
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g_waitchild();
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}
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/*****************************************************************************/
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/* called in child just after fork */
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int APP_CC
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xrdp_child_fork(void)
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{
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int pid;
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char text[256];
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/* close, don't delete these */
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g_close_wait_obj(g_term_event);
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g_close_wait_obj(g_sync_event);
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pid = g_getpid();
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g_snprintf(text, 255, "xrdp_%8.8x_main_term", pid);
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g_term_event = g_create_wait_obj(text);
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g_snprintf(text, 255, "xrdp_%8.8x_main_sync", pid);
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g_sync_event = g_create_wait_obj(text);
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return 0;
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}
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/*****************************************************************************/
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int APP_CC
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g_is_term(void)
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{
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return g_is_wait_obj_set(g_term_event);
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}
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/*****************************************************************************/
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void APP_CC
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g_set_term(int in_val)
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{
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if (in_val)
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{
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g_set_wait_obj(g_term_event);
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}
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else
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{
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g_reset_wait_obj(g_term_event);
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}
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}
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/*****************************************************************************/
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tbus APP_CC
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g_get_term_event(void)
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{
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return g_term_event;
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}
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/*****************************************************************************/
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tbus APP_CC
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g_get_sync_event(void)
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{
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return g_sync_event;
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}
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/*****************************************************************************/
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void DEFAULT_CC
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pipe_sig(int sig_num)
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{
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/* do nothing */
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g_writeln("got SIGPIPE(%d)", sig_num);
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}
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/*****************************************************************************/
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void APP_CC
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g_loop(void)
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{
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tc_mutex_lock(g_sync_mutex);
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if (g_sync_command != 0)
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{
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if (g_sync_func != 0)
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{
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if (g_sync_command == 100)
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{
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g_sync_result = g_sync_func(g_sync_param1, g_sync_param2);
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}
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}
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g_sync_command = 0;
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}
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tc_mutex_unlock(g_sync_mutex);
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_process_params(int argc, char** argv,
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struct xrdp_startup_params* startup_params)
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{
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int index;
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char option[128];
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char value[128];
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index = 1;
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while (index < argc)
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{
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g_strncpy(option, argv[index], 127);
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if (index + 1 < argc)
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{
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g_strncpy(value, argv[index + 1], 127);
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}
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else
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{
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value[0] = 0;
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}
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if ((g_strncasecmp(option, "-help", 255)) == 0 ||
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(g_strncasecmp(option, "--help", 255)) == 0 ||
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(g_strncasecmp(option, "-h", 255)) == 0)
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{
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startup_params->help = 1;
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}
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else if ((g_strncasecmp(option, "-kill", 255) == 0) ||
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(g_strncasecmp(option, "--kill", 255) == 0) ||
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(g_strncasecmp(option, "-k", 255) == 0))
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{
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startup_params->kill = 1;
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}
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else if ((g_strncasecmp(option, "-nodaemon", 255) == 0) ||
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(g_strncasecmp(option, "--nodaemon", 255) == 0) ||
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(g_strncasecmp(option, "-nd", 255) == 0) ||
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(g_strncasecmp(option, "--nd", 255) == 0) ||
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(g_strncasecmp(option, "-ns", 255) == 0) ||
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(g_strncasecmp(option, "--ns", 255) == 0))
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{
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startup_params->no_daemon = 1;
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}
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else if ((g_strncasecmp(option, "-v", 255) == 0) ||
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(g_strncasecmp(option, "--version", 255) == 0))
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{
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startup_params->version = 1;
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}
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else if ((g_strncasecmp(option, "-p", 255) == 0) ||
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(g_strncasecmp(option, "--port", 255) == 0))
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{
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index++;
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g_strncpy(startup_params->port, value, 127);
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if (g_strlen(startup_params->port) < 1)
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{
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g_writeln("error processing params, port [%s]", startup_params->port);
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return 1;
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}
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else
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{
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g_writeln("--port parameter found, ini override [%s]",
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startup_params->port);
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}
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}
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else if ((g_strncasecmp(option, "-f", 255) == 0) ||
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(g_strncasecmp(option, "--fork", 255) == 0))
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{
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startup_params->fork = 1;
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g_writeln("--fork parameter found, ini override");
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}
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else
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{
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return 1;
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}
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index++;
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}
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return 0;
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}
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/*****************************************************************************/
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int DEFAULT_CC
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main(int argc, char** argv)
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{
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int test;
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int host_be;
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struct xrdp_startup_params* startup_params;
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int pid;
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int fd;
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int no_daemon;
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char text[256];
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char pid_file[256];
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g_init("xrdp");
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ssl_init();
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/* check compiled endian with actual endian */
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test = 1;
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host_be = !((int)(*(unsigned char*)(&test)));
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#if defined(B_ENDIAN)
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if (!host_be)
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#endif
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#if defined(L_ENDIAN)
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if (host_be)
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#endif
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{
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g_writeln("endian wrong, edit arch.h");
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return 0;
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}
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/* check long, int and void* sizes */
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if (sizeof(int) != 4)
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{
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g_writeln("unusable int size, must be 4");
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return 0;
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}
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if (sizeof(long) != sizeof(void*))
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{
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g_writeln("long size must match void* size");
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return 0;
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}
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if (sizeof(long) != 4 && sizeof(long) != 8)
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{
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g_writeln("unusable long size, must be 4 or 8");
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return 0;
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}
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if (sizeof(tui64) != 8)
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{
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g_writeln("unusable tui64 size, must be 8");
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return 0;
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}
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startup_params = (struct xrdp_startup_params*)
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g_malloc(sizeof(struct xrdp_startup_params), 1);
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if (xrdp_process_params(argc, argv, startup_params) != 0)
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{
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g_writeln("Unknown Parameter");
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g_writeln("xrdp -h for help");
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g_writeln("");
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g_deinit();
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g_exit(0);
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}
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g_snprintf(pid_file, 255, "%s/xrdp.pid", XRDP_PID_PATH);
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no_daemon = 0;
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if (startup_params->kill)
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{
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g_writeln("stopping xrdp");
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/* read the xrdp.pid file */
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fd = -1;
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if (g_file_exist(pid_file)) /* xrdp.pid */
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{
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fd = g_file_open(pid_file); /* xrdp.pid */
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}
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if (fd == -1)
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{
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g_writeln("problem opening to xrdp.pid [%s]", pid_file);
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g_writeln("maybe its not running");
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}
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else
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{
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g_memset(text, 0, 32);
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g_file_read(fd, text, 31);
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pid = g_atoi(text);
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g_writeln("stopping process id %d", pid);
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if (pid > 0)
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{
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g_sigterm(pid);
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}
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g_file_close(fd);
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}
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g_deinit();
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g_exit(0);
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}
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if (startup_params->no_daemon)
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{
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no_daemon = 1;
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}
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if (startup_params->help)
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{
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g_writeln("");
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g_writeln("xrdp: A Remote Desktop Protocol server.");
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g_writeln("Copyright (C) Jay Sorg 2004-2011");
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g_writeln("See http://xrdp.sourceforge.net for more information.");
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g_writeln("");
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g_writeln("Usage: xrdp [options]");
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g_writeln(" --help: show help");
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g_writeln(" --nodaemon: don't fork into background");
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g_writeln(" --kill: shut down xrdp");
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g_writeln(" --port: tcp listen port");
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g_writeln(" --fork: fork on new connection");
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g_writeln("");
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g_deinit();
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g_exit(0);
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}
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if (startup_params->version)
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{
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g_writeln("");
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g_writeln("xrdp: A Remote Desktop Protocol server.");
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g_writeln("Copyright (C) Jay Sorg 2004-2011");
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g_writeln("See http://xrdp.sourceforge.net for more information.");
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g_writeln("Version %s",PACKAGE_VERSION);
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g_writeln("");
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g_deinit();
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g_exit(0);
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}
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if (g_file_exist(pid_file)) /* xrdp.pid */
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{
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g_writeln("It looks like xrdp is allready running,");
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g_writeln("if not delete the xrdp.pid file and try again");
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g_deinit();
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g_exit(0);
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}
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if (!no_daemon)
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{
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/* make sure containing directory exists */
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g_create_path(pid_file);
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/* make sure we can write to pid file */
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fd = g_file_open(pid_file); /* xrdp.pid */
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if (fd == -1)
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{
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g_writeln("running in daemon mode with no access to pid files, quitting");
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g_deinit();
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g_exit(0);
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}
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if (g_file_write(fd, "0", 1) == -1)
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{
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g_writeln("running in daemon mode with no access to pid files, quitting");
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g_deinit();
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g_exit(0);
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}
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g_file_close(fd);
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g_file_delete(pid_file);
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}
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if (!no_daemon)
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{
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/* start of daemonizing code */
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pid = g_fork();
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if (pid == -1)
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{
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g_writeln("problem forking");
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g_deinit();
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g_exit(1);
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}
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if (0 != pid)
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{
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g_writeln("process %d started ok", pid);
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/* exit, this is the main process */
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g_deinit();
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g_exit(0);
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}
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g_sleep(1000);
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/* write the pid to file */
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pid = g_getpid();
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fd = g_file_open(pid_file); /* xrdp.pid */
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if (fd == -1)
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{
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g_writeln("trying to write process id to xrdp.pid");
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g_writeln("problem opening xrdp.pid");
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g_writeln("maybe no rights");
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}
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else
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{
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g_sprintf(text, "%d", pid);
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g_file_write(fd, text, g_strlen(text));
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g_file_close(fd);
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}
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g_sleep(1000);
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g_file_close(0);
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g_file_close(1);
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g_file_close(2);
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g_file_open("/dev/null");
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g_file_open("/dev/null");
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g_file_open("/dev/null");
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/* end of daemonizing code */
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}
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g_threadid = tc_get_threadid();
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g_listen = xrdp_listen_create();
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g_signal_user_interrupt(xrdp_shutdown); /* SIGINT */
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g_signal_kill(xrdp_shutdown); /* SIGKILL */
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g_signal_pipe(pipe_sig); /* SIGPIPE */
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g_signal_terminate(xrdp_shutdown); /* SIGTERM */
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g_signal_child_stop(xrdp_child); /* SIGCHLD */
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g_sync_mutex = tc_mutex_create();
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g_sync1_mutex = tc_mutex_create();
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pid = g_getpid();
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g_snprintf(text, 255, "xrdp_%8.8x_main_term", pid);
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g_term_event = g_create_wait_obj(text);
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g_snprintf(text, 255, "xrdp_%8.8x_main_sync", pid);
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g_sync_event = g_create_wait_obj(text);
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if (g_term_event == 0)
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{
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g_writeln("error creating g_term_event");
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}
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g_listen->startup_params = startup_params;
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xrdp_listen_main_loop(g_listen);
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xrdp_listen_delete(g_listen);
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tc_mutex_delete(g_sync_mutex);
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tc_mutex_delete(g_sync1_mutex);
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g_delete_wait_obj(g_term_event);
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g_delete_wait_obj(g_sync_event);
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/* only main process should delete pid file */
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if ((!no_daemon) && (pid == g_getpid()))
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{
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/* delete the xrdp.pid file */
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g_file_delete(pid_file);
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}
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g_free(startup_params);
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g_deinit();
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return 0;
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}
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