update/fix some debug log calls and add the test of XRDP_DEBUG to make files so controlled by the autoconf option --enable-xrdpdebug

libxrdp/libxrdp.c

@@ -744,6 +744,7 @@ libxrdp_query_channel(struct xrdp_session *session, int index,
 
     if (index < 0 || index >= count)
     {
+        DEBUG(("libxrdp_query_channel - Channel out of range %d", index));
         return 1;
     }
 
@@ -760,6 +761,7 @@ libxrdp_query_channel(struct xrdp_session *session, int index,
     if (channel_name != 0)
     {
         g_strncpy(channel_name, channel_item->name, 8);
+        DEBUG(("libxrdp_query_channel - Channel %d name %s", index, channel_name));
     }
 
     if (channel_flags != 0)

libxrdp/xrdp_mcs.c

@@ -144,9 +144,9 @@ xrdp_mcs_recv(struct xrdp_mcs *self, struct stream *s, int *chan)
         /* this is channels getting added from the client */
         if (appid == MCS_CJRQ)
         {
-            g_writeln("channel join request received");
             in_uint16_be(s, userid);
             in_uint16_be(s, chanid);
+            g_writeln("channel join request received %d:%d", userid, chanid);
             DEBUG(("xrdp_mcs_recv  adding channel %4.4x", chanid));
 
             if (xrdp_mcs_send_cjcf(self, userid, chanid) != 0)

libxrdp/xrdp_rdp.c

@@ -454,7 +454,7 @@ xrdp_rdp_send_data(struct xrdp_rdp *self, struct stream *s,
         }
         else
         {
-            g_writeln("mppc_encode not ok");
+            g_writeln("mppc_encode not ok: type %d flags %d", mppc_enc->protocol_type, mppc_enc->flags);
         }
     }