xrdp: allow xrdp to listen in UDS

xrdp/xrdp_listen.c

@@ -60,6 +60,7 @@ xrdp_listen_create(void)
         g_process_sem = tc_sem_create(0);
     }
 
+    /* setting TCP mode now, may change later */
     self->listen_trans = trans_create(TRANS_MODE_TCP, 16, 16);
 
     if (self->listen_trans == 0)
@@ -186,13 +187,19 @@ xrdp_listen_get_port_address(char *port, int port_bytes,
                     if (g_strcasecmp(val, "port") == 0)
                     {
                         val = (char *)list_get_item(values, index);
+                        if (val[0] == '/')
+                        {
+                            g_strncpy(port, val, port_bytes - 1);
+                        }
+                        else
+                        {
                             error = g_atoi(val);
-
                             if ((error > 0) && (error < 65000))
                             {
                                 g_strncpy(port, val, port_bytes - 1);
                             }
                         }
+                    }
 
                     if (g_strcasecmp(val, "address") == 0)
                     {
@@ -348,6 +355,14 @@ xrdp_listen_main_loop(struct xrdp_listen *self)
         return 1;
     }
 
+    if (port[0] == '/')
+    {
+        /* set UDS mode */
+        self->listen_trans->mode = TRANS_MODE_UNIX;
+        /* not valid with UDS */
+        tcp_nodelay = 0;
+    }
+
     /* Create socket */
     error = trans_listen_address(self->listen_trans, port, address);