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370 lines
8.8 KiB
370 lines
8.8 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 2004-2005
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main program
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*/
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#if defined(_WIN32)
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#include <windows.h>
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#else
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#include <pthread.h>
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#endif
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#include "xrdp.h"
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static struct xrdp_listen* g_listen = 0;
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static int g_threadid = 0; /* main threadid */
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#if defined(_WIN32)
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static CRITICAL_SECTION g_term_mutex;
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static CRITICAL_SECTION g_sync_mutex;
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static CRITICAL_SECTION g_sync1_mutex;
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#else
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static pthread_mutex_t g_term_mutex = PTHREAD_MUTEX_INITIALIZER;
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static pthread_mutex_t g_sync_mutex = PTHREAD_MUTEX_INITIALIZER;
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static pthread_mutex_t g_sync1_mutex = PTHREAD_MUTEX_INITIALIZER;
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#endif
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static int g_term = 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 defined(_WIN32)
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EnterCriticalSection(&g_sync1_mutex);
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#else
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pthread_mutex_lock(&g_sync1_mutex);
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#endif
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g_lock();
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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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g_unlock();
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do
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{
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g_sleep(100);
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g_lock();
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sync_command = g_sync_command;
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sync_result = g_sync_result;
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g_unlock();
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}
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while (sync_command != 0);
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#if defined(_WIN32)
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LeaveCriticalSection(&g_sync1_mutex);
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#else
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pthread_mutex_unlock(&g_sync1_mutex);
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#endif
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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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struct xrdp_listen* listen;
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if (g_get_threadid() != g_threadid)
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{
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return;
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}
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g_printf("shutting down\r\n");
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g_printf("signal %d threadid %d\r\n", sig, g_get_threadid());
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listen = g_listen;
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g_listen = 0;
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if (listen != 0)
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{
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g_set_term(1);
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g_sleep(1000);
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xrdp_listen_delete(listen);
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}
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/* delete the xrdp.pid file */
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g_file_delete("./xrdp.pid");
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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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int rv;
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#if defined(_WIN32)
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EnterCriticalSection(&g_term_mutex);
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rv = g_term;
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LeaveCriticalSection(&g_term_mutex);
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#else
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pthread_mutex_lock(&g_term_mutex);
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rv = g_term;
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pthread_mutex_unlock(&g_term_mutex);
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#endif
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return rv;
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}
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/*****************************************************************************/
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void APP_CC
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g_lock(void)
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{
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#if defined(_WIN32)
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EnterCriticalSection(&g_sync_mutex);
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#else
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pthread_mutex_lock(&g_sync_mutex);
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#endif
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}
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/*****************************************************************************/
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void APP_CC
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g_unlock(void)
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{
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#if defined(_WIN32)
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LeaveCriticalSection(&g_sync_mutex);
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#else
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pthread_mutex_unlock(&g_sync_mutex);
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#endif
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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 defined(_WIN32)
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EnterCriticalSection(&g_term_mutex);
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g_term = in_val;
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LeaveCriticalSection(&g_term_mutex);
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#else
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pthread_mutex_lock(&g_term_mutex);
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g_term = in_val;
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pthread_mutex_unlock(&g_term_mutex);
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#endif
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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_printf("got SIGPIPE(%d)\r\n", 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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g_lock();
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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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g_unlock();
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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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#if defined(_WIN32)
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WSADATA w;
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#else
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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[32];
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#endif
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/* check compiled endian with actual edian */
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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_printf("endian wrong, edit arch.h\r\n");
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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_printf("unusable int size, must be 4\r\n");
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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_printf("long size must match void* size\r\n");
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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_printf("unusable long size, must be 4 or 8\r\n");
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return 0;
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}
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#if defined(_WIN32)
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WSAStartup(2, &w);
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InitializeCriticalSection(&g_term_mutex);
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InitializeCriticalSection(&g_sync_mutex);
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InitializeCriticalSection(&g_sync1_mutex);
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#else
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no_daemon = 0;
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if (argc == 2)
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{
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if (g_strncasecmp(argv[1], "-kill", 255) == 0 ||
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g_strncasecmp(argv[1], "--kill", 255) == 0)
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{
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g_printf("stopping xrdp\r\n");
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/* read the xrdp.pid file */
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fd = -1;
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if (g_file_exist("./xrdp.pid"))
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{
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fd = g_file_open("./xrdp.pid");
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}
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if (fd == -1)
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{
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g_printf("problem opening to xrdp.pid\r\n");
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g_printf("maybe its not running\r\n");
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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_printf("stopping process id %d\r\n", 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_exit(0);
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}
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else if (g_strncasecmp(argv[1], "-nodeamon", 255) == 0 ||
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g_strncasecmp(argv[1], "--nodeamon", 255) == 0)
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{
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no_daemon = 1;
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}
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else if (g_strncasecmp(argv[1], "-help", 255) == 0 ||
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g_strncasecmp(argv[1], "--help", 255) == 0 ||
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g_strncasecmp(argv[1], "-h", 255) == 0)
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{
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g_printf("\r\n");
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g_printf("xrdp: A Remote Desktop Protocol server.\r\n");
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g_printf("Copyright (C) Jay Sorg 2004-2005\r\n");
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g_printf("See http://xrdp.sourceforge.net for more information.\r\n");
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g_printf("\r\n");
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g_printf("Usage: xrdp [options]\r\n");
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g_printf(" -h: show help\r\n");
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g_printf(" -nodeamon: don't fork into background\r\n");
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g_printf(" -kill: shut down xrdp\r\n");
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g_printf("\r\n");
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g_exit(0);
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}
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else
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{
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g_printf("unknown parameter\r\n");
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g_exit(0);
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}
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}
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else if (argc > 1)
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{
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g_printf("unknown parameter\r\n");
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g_exit(0);
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}
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if (g_file_exist("./xrdp.pid"))
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{
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g_printf("It looks like xrdp is allready running,\r\n");
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g_printf("if not delete the xrdp.pid file and try again\r\n");
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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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/* 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_printf("problem forking\r\n");
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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_printf("process %d started ok\r\n", pid);
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/* exit, this is the main process */
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g_exit(0);
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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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/* write the pid to file */
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pid = g_getpid();
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fd = g_file_open("./xrdp.pid");
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if (fd == -1)
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{
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g_printf("trying to write process id to xrdp.pid\r\n");
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g_printf("problem opening xrdp.pid\r\n");
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g_printf("maybe no rights\r\n");
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}
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else
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{
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g_set_file_rights("./xrdp.pid", 1, 1);
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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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#endif
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g_threadid = g_get_threadid();
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g_listen = xrdp_listen_create();
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g_signal(2, xrdp_shutdown); /* SIGINT */
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g_signal(9, xrdp_shutdown); /* SIGKILL */
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g_signal(13, pipe_sig); /* sig pipe */
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g_signal(15, xrdp_shutdown); /* SIGTERM */
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xrdp_listen_main_loop(g_listen);
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#if defined(_WIN32)
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/* I don't think it ever gets here */
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WSACleanup();
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DeleteCriticalSection(&g_term_mutex);
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DeleteCriticalSection(&g_sync_mutex);
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DeleteCriticalSection(&g_sync1_mutex);
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xrdp_listen_delete(g_listen);
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#endif
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return 0;
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}
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