--- loncom/lonnet/perl/lonnet.pm	2005/09/26 22:16:58	1.651.2.5
+++ loncom/lonnet/perl/lonnet.pm	2005/10/04 16:26:15	1.658
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.651.2.5 2005/09/26 22:16:58 albertel Exp $
+# $Id: lonnet.pm,v 1.658 2005/10/04 16:26:15 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -767,6 +767,13 @@ sub validate_access_key {
 }
 
 # ------------------------------------- Find the section of student in a course
+sub devalidate_getsection_cache {
+    my ($udom,$unam,$courseid)=@_;
+    $courseid=~s/\_/\//g;
+    $courseid=~s/^(\w)/\/$1/;
+    my $hashid="$udom:$unam:$courseid";
+    &devalidate_cache_new('getsection',$hashid);
+}
 
 sub getsection {
     my ($udom,$unam,$courseid)=@_;
@@ -1804,7 +1811,27 @@ sub courseiddump {
     return %returnhash;
 }
 
-#
+# ---------------------------------------------------------- DC e-mail
+sub dcmaildump {
+    my ($dom,$startdate,$enddate,$senders) = @_;
+    my %returnhash=(); 
+    foreach my $tryserver (keys %libserv) {
+        if ($hostdom{$tryserver} eq $dom) {
+            %{$returnhash{$tryserver}}=();
+            foreach (
+                split(/\&/,&reply('dcmaildump:'.$dom.':'.
+                   &escape($startdate).':'.&escape($enddate).':'.
+                   &escape($senders), ,$tryserver))) {
+                my($key,$value) = split(/\=/,$_);
+                if (($key) && ($value)) {
+                    $returnhash{$tryserver}{$key} = $value;
+                }
+            }
+        }
+    }
+    return %returnhash;
+}
+
 # ----------------------------------------------------------- Check out an item
 
 sub get_first_access {
@@ -3775,6 +3802,8 @@ sub modify_student_enrollment {
 		   $cdom,$cnum);
     unless (($reply eq 'ok') || ($reply eq 'delayed')) {
 	return 'error: '.$reply;
+    } else {
+	&devalidate_getsection_cache($udom,$uname,$cid);
     }
     # Add student role to user
     my $uurl='/'.$cid;
@@ -4860,7 +4889,7 @@ sub metadata {
 	$metaentry{':keys'}=join(',',keys %metathesekeys);
 	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
 	$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
-	&do_cache_new('meta',$uri,\%metaentry,600);
+	&do_cache_new('meta',$uri,\%metaentry,60*60*24);
 # this is the end of "was not already recently cached
     }
     return $metaentry{':'.$what};
@@ -5890,7 +5919,7 @@ BEGIN {
     }
     close($config);
     # FIXME: dev server don't want this, production servers _do_ want this
-    &get_iphost();
+    #&get_iphost();
 }
 
 sub get_iphost {