--- loncom/lonnet/perl/lonnet.pm	2008/12/21 15:26:50	1.976.2.3
+++ loncom/lonnet/perl/lonnet.pm	2009/03/20 21:18:26	1.976.2.7
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.976.2.3 2008/12/21 15:26:50 raeburn Exp $
+# $Id: lonnet.pm,v 1.976.2.7 2009/03/20 21:18:26 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -177,6 +177,20 @@ sub create_connection {
     return 0;
 }
 
+sub get_server_timezone {
+    my ($cnum,$cdom) = @_;
+    my $home=&homeserver($cnum,$cdom);
+    if ($home ne 'no_host') {
+        my $cachetime = 24*3600;
+        my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
+        if (defined($cached)) {
+            return $timezone;
+        } else {
+            my $timezone = &reply('servertimezone',$home);
+            return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
+        }
+    }
+}
 
 # -------------------------------------------------- Non-critical communication
 sub subreply {
@@ -508,7 +522,7 @@ sub appenv {
 # ----------------------------------------------------- Delete from Environment
 
 sub delenv {
-    my $delthis=shift;
+    my ($delthis,$regexp) = @_;
     if (($delthis=~/user\.role/) || ($delthis=~/user\.priv/)) {
         &logthis("<font color=\"blue\">WARNING: ".
                 "Attempt to delete from environment ".$delthis);
@@ -521,10 +535,17 @@ sub delenv {
 	tie(my %disk_env,'GDBM_File',$env{'user.environment'},
 	    (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
 	foreach my $key (keys(%disk_env)) {
-	    if ($key=~/^$delthis/) { 
-		delete($env{$key});
-		delete($disk_env{$key});
-	    }
+            if ($regexp) {
+                if ($key=~/^$delthis/) {
+                    delete($env{$key});
+                    delete($disk_env{$key});
+                }
+            } else {
+                if ($key=~/^\Q$delthis\E/) {
+                    delete($env{$key});
+                    delete($disk_env{$key});
+                }
+            }
 	}
 	untie(%disk_env);
     }
@@ -1227,7 +1248,6 @@ sub inst_userrules {
 sub get_domain_defaults {
     my ($domain) = @_;
     my $cachetime = 60*60*24;
-    my ($defauthtype,$defautharg,$deflang,%deftools);
     my ($result,$cached)=&is_cached_new('domdefaults',$domain);
     if (defined($cached)) {
         if (ref($result) eq 'HASH') {
@@ -1241,6 +1261,8 @@ sub get_domain_defaults {
         $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'}; 
         $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
         $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
+        $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
+        $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
     } else {
         $domdefaults{'lang_def'} = &domain($domain,'lang_def');
         $domdefaults{'auth_def'} = &domain($domain,'auth_def');
@@ -9213,9 +9235,11 @@ in the user's environment.db and in %env
 
 =item *
 X<delenv()>
-B<delenv($regexp)>: removes all items from the session
-environment file that matches the regular expression in $regexp. The
-values are also delted from the current processes %env.
+B<delenv($delthis,$regexp)>: removes all items from the session
+environment file that begin with $delthis. If the
+optional second arg - $regexp - is true, $delthis is treated as a
+regular expression, otherwise \Q$delthis\E is used.
+The values are also deleted from the current processes %env.
 
 =item * get_env_multiple($name)