added deamonizing

xrdp/xrdp.c

@@ -93,8 +93,8 @@ xrdp_shutdown(int sig)
   {
     return;
   }
-  g_printf("shutting down\n\r");
+  g_printf("shutting down\r\n");
-  g_printf("signal %d threadid %d\n\r", sig, g_get_threadid());
+  g_printf("signal %d threadid %d\r\n", sig, g_get_threadid());
   listen = g_listen;
   g_listen = 0;
   if (listen != 0)
@@ -103,6 +103,8 @@ xrdp_shutdown(int sig)
     g_sleep(1000);
     xrdp_listen_delete(listen);
   }
+  /* delete the xrdp.pid file */
+  g_file_delete("./xrdp.pid");
 }
 
 /*****************************************************************************/
@@ -165,7 +167,7 @@ void DEFAULT_CC
 pipe_sig(int sig_num)
 {
   /* do nothing */
-  g_printf("got SIGPIPE(%d)\n\r", sig_num);
+  g_printf("got SIGPIPE(%d)\r\n", sig_num);
 }
 
 /*****************************************************************************/
@@ -195,6 +197,11 @@ main(int argc, char** argv)
   int host_be;
 #if defined(_WIN32)
   WSADATA w;
+#else
+  int pid;
+  int fd;
+  int no_daemon;
+  char text[32];
 #endif
 
   /* check compiled endian with actual edian */
@@ -207,18 +214,23 @@ main(int argc, char** argv)
   if (host_be)
 #endif
   {
-    g_printf("endian wrong, edit arch.h\n\r");
+    g_printf("endian wrong, edit arch.h\r\n");
     return 0;
   }
   /* check long, int and void* sizes */
   if (sizeof(int) != 4)
   {
-    g_printf("unusable int size, must be 4\n\r");
+    g_printf("unusable int size, must be 4\r\n");
     return 0;
   }
-  if (sizeof(long) != sizeof(void*) || (sizeof(long) != 4 && sizeof(long) != 8))
+  if (sizeof(long) != sizeof(void*))
   {
-    g_printf("unusable long size, must be 4 or 8\n\r");
+    g_printf("long size must match void* size\r\n");
+    return 0;
+  }
+  if (sizeof(long) != 4 && sizeof(long) != 8)
+  {
+    g_printf("unusable long size, must be 4 or 8\r\n");
     return 0;
   }
 #if defined(_WIN32)
@@ -226,6 +238,117 @@ main(int argc, char** argv)
   InitializeCriticalSection(&g_term_mutex);
   InitializeCriticalSection(&g_sync_mutex);
   InitializeCriticalSection(&g_sync1_mutex);
+#else
+  no_daemon = 0;
+  if (argc == 2)
+  {
+    if (g_strncasecmp(argv[1], "-kill", 255) == 0 ||
+        g_strncasecmp(argv[1], "--kill", 255) == 0)
+    {
+      g_printf("stopping xrdp\r\n");
+      /* read the xrdp.pid file */
+      fd = -1;
+      if (g_file_exist("./xrdp.pid"))
+      {
+        fd = g_file_open("./xrdp.pid");
+      }
+      if (fd == -1)
+      {
+        g_printf("problem opening to xrdp.pid\r\n");
+        g_printf("maybe its not running\r\n");
+      }
+      else
+      {
+        g_memset(text, 0, 32);
+        g_file_read(fd, text, 31);
+        pid = g_atoi(text);
+        g_printf("stopping process id %d\r\n", pid);
+        if (pid > 0)
+        {
+          g_sigterm(pid);
+        }
+        g_file_close(fd);
+      }
+      g_exit(0);
+    }
+    else if (g_strncasecmp(argv[1], "-nodeamon", 255) == 0 ||
+             g_strncasecmp(argv[1], "--nodeamon", 255) == 0)
+    {
+      no_daemon = 1;
+    }
+    else if (g_strncasecmp(argv[1], "-help", 255) == 0 ||
+             g_strncasecmp(argv[1], "--help", 255) == 0 ||
+             g_strncasecmp(argv[1], "-h", 255) == 0)
+    {
+      g_printf("\r\n");
+      g_printf("xrdp: A Remote Desktop Protocol server.\r\n");
+      g_printf("Copyright (C) Jay Sorg 2004-2005\r\n");
+      g_printf("See http://xrdp.sourceforge.net for more information.\r\n");
+      g_printf("\r\n");
+      g_printf("Usage: xrdp [options]\r\n");
+      g_printf("   -h: show help\r\n");
+      g_printf("   -nodeamon: don't fork into background\r\n");
+      g_printf("   -kill: shut down xrdp\r\n");
+      g_printf("\r\n");
+      g_exit(0);
+    }
+    else
+    {
+      g_printf("unknown parameter\r\n");
+      g_exit(0);
+    }
+  }
+  else if (argc > 1)
+  {
+    g_printf("unknown parameter\r\n");
+    g_exit(0);
+  }
+  if (g_file_exist("./xrdp.pid"))
+  {
+    g_printf("It looks like xrdp is allready running,\r\n");
+    g_printf("if not delete the xrdp.pid file and try again\r\n");
+    g_exit(0);
+  }
+  if (!no_daemon)
+  {
+    /* start of daemonizing code */
+    pid = g_fork();
+    if (pid == -1)
+    {
+      g_printf("problem forking\r\n");
+      g_exit(1);
+    }
+    if (0 != pid)
+    {
+      g_printf("process %d started ok\r\n", pid);
+      /* exit, this is the main process */
+      g_exit(0);
+    }
+    g_sleep(1000);
+    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");
+    /* end of daemonizing code */
+  }
+  /* write the pid to file */
+  pid = g_getpid();
+  fd = g_file_open("./xrdp.pid");
+  if (fd == -1)
+  {
+    g_printf("trying to write process id to xrdp.pid\r\n");
+    g_printf("problem opening xrdp.pid\r\n");
+    g_printf("maybe no rights\r\n");
+  }
+  else
+  {
+    g_set_file_rights("./xrdp.pid", 1, 1);
+    g_sprintf(text, "%d", pid);
+    g_file_write(fd, text, g_strlen(text));
+    g_file_close(fd);
+  }
 #endif
   g_threadid = g_get_threadid();
   g_listen = xrdp_listen_create();