--- loncom/auth/lonauth.pm	2006/06/02 21:23:49	1.79
+++ loncom/auth/lonauth.pm	2006/09/19 21:36:24	1.83
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # User Authentication Module
 #
-# $Id: lonauth.pm,v 1.79 2006/06/02 21:23:49 albertel Exp $
+# $Id: lonauth.pm,v 1.83 2006/09/19 21:36:24 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -40,13 +40,13 @@ use Apache::lonnet;
 use Apache::lonmenu();
 use Fcntl qw(:flock);
 use Apache::lonlocal;
-
+use GDBM_File;
 my %FORM;
 
 # ------------------------------------------------------------ Successful login
 
 sub success {
-    my ($r, $username, $domain, $authhost,$lowerurl) = @_;
+    my ($r, $username, $domain, $authhost, $lowerurl, $extra_env) = @_;
     my $lonids=$r->dir_config('lonIDsDir');
 
     my $public=($username eq 'public' && $domain eq 'public');
@@ -170,24 +170,20 @@ sub success {
 	    }
 	}
 
-	open(my $idf,">$lonids/$cookie.id");
-	unless (flock($idf,LOCK_EX)) {
+	$env{'user.environment'} = "$lonids/$cookie.id";
+	
+	if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
+		 &GDBM_WRCREAT(),0640)) {
+	    &add_to_env(\%disk_env,\%initial_env);
+	    &add_to_env(\%disk_env,\%userenv,'environment.');
+	    &add_to_env(\%disk_env,$userroles);
+	    &add_to_env(\%disk_env,$extra_env);
+	    untie(%disk_env);
+	} else {
 	    &Apache::lonnet::logthis("<font color=blue>WARNING: ".
-			   'Could not obtain exclusive lock in lonauth: '.$!);
-	    close($idf);
+			   'Could not create environment storage in lonauth: '.$!);
 	    return 'error: '.$!;
 	}
-
-	while (my ($key,$value) = each(%initial_env)) {
-	    print $idf (&escape($key).'='.&escape($value)."\n");
-	}
-	while (my ($key,$value) = each(%userenv)) {
-	    print $idf (&escape('environment.'.$key).'='.&escape($value)."\n");
-	}
-	while (my ($key,$value) = each(%{$userroles})) {
-	    print $idf (&escape($key).'='.&escape($value)."\n");
-	}
-	close($idf);
     }
     $env{'request.role'}='cm';
     $env{'request.role.adv'}=$env{'user.adv'};
@@ -253,6 +249,14 @@ $end_page
 ENDSUCCESS
 }
 
+sub add_to_env {
+    my ($idf,$env_data,$prefix) = @_;
+    while (my ($key,$value) = each(%$env_data)) {
+	$idf->{$prefix.$key} = $value;
+	$env{$prefix.$key}   = $value;
+    }
+}
+
 # --------------------------------------------------------------- Failed login!
 
 sub failed {
@@ -446,7 +450,12 @@ ENDFAILED
 	    &Apache::lonnet::logthis('Non-privileged user attempting switch user');
 	}
     }
-    &success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
+    if ($r->dir_config("lonBalancer") eq 'yes') {
+	&success($r,$FORM{'uname'},$FORM{'udom'},$authhost,'noredirect');
+	$r->internal_redirect('/adm/switchserver');
+    } else {
+	&success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
+    }
     return OK;
 }