--- loncom/interface/lonchatfetch.pm	2010/05/03 16:41:51	1.37
+++ loncom/interface/lonchatfetch.pm	2021/11/30 15:55:37	1.40
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Chat Fetching
 #
-# $Id: lonchatfetch.pm,v 1.37 2010/05/03 16:41:51 www Exp $
+# $Id: lonchatfetch.pm,v 1.40 2021/11/30 15:55:37 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -63,7 +63,7 @@ sub handler {
 		'<b>'.&unescape($group_info{description}).
 		'</b><br />';
         }
-    } elsif (! &Apache::lonnet::allowed('pch',$env{'request.course.id'}.
+    } elsif (! &Apache::lonnet::allowed('plc',$env{'request.course.id'}.
              ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))
         ) {
         return HTTP_NOT_ACCEPTABLE;
@@ -177,7 +177,8 @@ sub handler {
         $refresh_cmd .= "&amp;group=$group";
     }
     my $headarg;
-    my ($blocked,$blocktext) = blockstatus();
+    my $clientip = &Apache::lonnet::get_requestor_ip($r);
+    my ($blocked,$blocktext) = &blockstatus($clientip);
     if ($blocked) {
         $newstuff = $blocktext;
         $headarg =  {'only_body' => 1,};
@@ -222,9 +223,11 @@ sub get_seeid_status {
 }
 
 sub blockstatus {
+    my ($clientip) = @_;
     my ($blocked,$output);
     my %setters;
-    my ($startblock,$endblock) = &Apache::loncommon::blockcheck(\%setters,'chat');
+    my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) =
+        &Apache::loncommon::blockcheck(\%setters,'chat',$clientip);
     if ($startblock && $endblock) {
         $blocked = 1;
         my $endblocktime = &Apache::lonlocal::locallocaltime($endblock);
@@ -237,9 +240,21 @@ sub blockstatus {
                 my ($openblock,$closeblock) = @{$setters{$course}{times}[$i]};
                 $openblock = &Apache::lonlocal::locallocaltime($openblock);
                 $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
-                $output .= &mt('Block for [_1] starts: [_2], ends [_3], set by: [_4]<br />',$courseinfo{'description'},$openblock,$closeblock,$fullname);
+                $output .= &mt('Block for [_1] starts: [_2], ends [_3], set by: [_4]',$courseinfo{'description'},$openblock,$closeblock,$fullname).'<br />';
             }
         }
+    } elsif ($by_ip) {
+        $blocked = 1;
+        my $showdom = &Apache::lonnet::domain($blockdom);
+        if ($showdom eq '') {
+            $showdom = $blockdom;
+        }
+        $output = &mt('Chat Room is unavailable from your current IP address: [_1], '
+                     .'because communication is blocked for certain IP address(es).'
+                     ,$clientip).
+                  '<br />'.
+                  &mt('This restriction was set by an administrator in the [_1] LON-CAPA domain.'
+                     ,$showdom);
     }
     return ($blocked,$output);
 }