File xrdp-fix-segfaults-in-xrdp-chansrv-code.patch of Package xrdp.2184

Index: xrdp-0.6.1/sesman/chansrv/clipboard.c
===================================================================
--- xrdp-0.6.1.orig/sesman/chansrv/clipboard.c
+++ xrdp-0.6.1/sesman/chansrv/clipboard.c
@@ -873,25 +873,31 @@ clipboard_event_selection_notify(XEvent*
       {
         LOG(5, ("clipboard_event_selection_notify: UTF8_STRING data_size %d",
             data_size));
-        g_free(g_last_clip_data);
-        g_last_clip_size = data_size;
-        g_last_clip_data = g_malloc(g_last_clip_size + 1, 0);
-        g_last_clip_type = g_utf8_atom;
-        g_memcpy(g_last_clip_data, data, g_last_clip_size);
-        g_last_clip_data[g_last_clip_size] = 0;
-        send_format_announce = 1;
+	if ((data) && (data_size > 0))
+        {
+            g_free(g_last_clip_data);
+            g_last_clip_size = data_size;
+            g_last_clip_data = (char *) g_malloc(g_last_clip_size + 1, 0);
+            g_last_clip_type = g_utf8_atom;
+            g_memcpy(g_last_clip_data, data, g_last_clip_size);
+            g_last_clip_data[g_last_clip_size] = 0;
+            send_format_announce = 1;
+        }
       }
       else if (lxevent->target == XA_STRING)
       {
         LOG(5, ("clipboard_event_selection_notify: XA_STRING data_size %d",
             data_size));
-        g_free(g_last_clip_data);
-        g_last_clip_size = data_size;
-        g_last_clip_data = g_malloc(g_last_clip_size + 1, 0);
-        g_last_clip_type = XA_STRING;
-        g_memcpy(g_last_clip_data, data, g_last_clip_size);
-        g_last_clip_data[g_last_clip_size] = 0;
-        send_format_announce = 1;
+	if ((data) && (data_size > 0))
+        {
+            g_free(g_last_clip_data);
+            g_last_clip_size = data_size;
+            g_last_clip_data = (char *) g_malloc(g_last_clip_size + 1, 0);
+            g_last_clip_type = XA_STRING;
+            g_memcpy(g_last_clip_data, data, g_last_clip_size);
+            g_last_clip_data[g_last_clip_size] = 0;
+            send_format_announce = 1;
+	}
       }
       else
       {
Index: xrdp-0.6.1/sesman/chansrv/chansrv.c
===================================================================
--- xrdp-0.6.1.orig/sesman/chansrv/chansrv.c
+++ xrdp-0.6.1/sesman/chansrv/chansrv.c
@@ -647,14 +647,19 @@ main(int argc, char** argv)
   g_signal_terminate(term_signal_handler); /* SIGTERM */
   g_signal_user_interrupt(term_signal_handler); /* SIGINT */
   g_signal_pipe(nil_signal_handler); /* SIGPIPE */
+
   display_text = g_getenv("DISPLAY");
   LOG(1, ("main: DISPLAY env var set to %s", display_text));
-  get_display_num_from_display(display_text);
+
+  if (display_text)
+    get_display_num_from_display(display_text);
+
   if (g_display_num == 0)
   {
     LOG(0, ("main: error, display is zero"));
     return 1;
   }
+
   LOG(1, ("main: using DISPLAY %d", g_display_num));
   g_snprintf(text, 255, "xrdp_chansrv_%8.8x_main_term", pid);
   g_term_event = g_create_wait_obj(text);