libxrdp: change channel_code into a meaningful name

common/xrdp_client_info.h

@@ -65,7 +65,7 @@ struct xrdp_client_info
   int rdp_compression;
   int rdp_autologin;
   int crypt_level; /* 1, 2, 3 = low, medium, high */
-  int channel_code; /* 0 = no channels 1 = channels */
+  int channels_allowed; /* 0 = no channels 1 = channels */
   int sound_code; /* 1 = leave sound at server */
   int is_mce;
   int rdp5_performanceflags;

libxrdp/xrdp_rdp.c

@@ -105,8 +105,8 @@ xrdp_rdp_read_config(struct xrdp_client_info *client_info)
         }
         else if (g_strcasecmp(item, "allow_channels") == 0)
         {
-            client_info->channel_code = g_text2bool(value);
+            client_info->channels_allowed = g_text2bool(value);
-            if (client_info->channel_code == 0)
+            if (client_info->channels_allowed == 0)
             {
                 log_message(LOG_LEVEL_DEBUG,"Info - All channels are disabled");
             }

libxrdp/xrdp_sec.c

@@ -1829,12 +1829,12 @@ xrdp_sec_process_mcs_data_channels(struct xrdp_sec *self, struct stream *s)
     client_info = &(self->rdp_layer->client_info);
 
 
-    DEBUG(("processing channels, channel_code is %d", client_info->channel_code));
+    DEBUG(("processing channels, channels_allowed is %d", client_info->channels_allowed));
 
     /* this is an option set in xrdp.ini */
-    if (client_info->channel_code != 1) /* are channels on? */
+    if (client_info->channels_allowed != 1) /* are channels on? */
     {
-        g_writeln("Processing channel data from client - The channel is off");
+        g_writeln("xrdp_sec_process_mcs_data_channels: all channels are disabled by configuration");
         return 0;
     }