--- loncom/auth/lonlogin.pm 2002/07/10 17:47:01 1.19
+++ loncom/auth/lonlogin.pm 2003/02/19 14:05:28 1.35
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Login Screen
#
-# $Id: lonlogin.pm,v 1.19 2002/07/10 17:47:01 bowersj2 Exp $
+# $Id: lonlogin.pm,v 1.35 2003/02/19 14:05:28 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -50,13 +50,24 @@ sub handler {
&Apache::loncommon::get_unprocessed_cgi
- ($ENV{'QUERY_STRING'},['interface']);
+ ($ENV{'QUERY_STRING'},['interface','username','domain','firsturl']);
+# ----------------------------------------------------------- Process Interface
$ENV{'form.interface'}=~s/\W//g;
+ my $textbrowsers=$r->dir_config('lonTextBrowsers');
+ my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
+
+ foreach (split(/\:/,$textbrowsers)) {
+ if ($httpbrowser=~/$_/i) {
+ $ENV{'form.interface'}='textual';
+ }
+ }
+
my $fullgraph=($ENV{'form.interface'} ne 'textual');
- my $iconpath= $r->dir_config('lonIconsURL');
+ my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':8080'.
+ $r->dir_config('lonIconsURL');
my $domain = $r->dir_config('lonDefDomain');
my $role = $r->dir_config('lonRole');
my $loadlim = $r->dir_config('lonLoadLim');
@@ -66,6 +77,12 @@ sub handler {
my $tabdir = $r->dir_config('lonTabDir');
my $include = $r->dir_config('lonIncludes');
+# --------------------------------------------- Default values for login fields
+
+ my $authusername=($ENV{'form.username'}?$ENV{'form.username'}:'');
+ my $authdomain=($ENV{'form.domain'}?$ENV{'form.domain'}:$domain);
+
+# ---------------------------------------------------------- Determine own load
my $loadavg;
{
my $loadfile=Apache::File->new('/proc/loadavg');
@@ -74,11 +91,13 @@ sub handler {
$loadavg =~ s/\s.*//g;
my $loadpercent=100*$loadavg/$loadlim;
+# ------------------------------------------------------- Do the load balancing
my $otherserver='http://'.$ENV{'SERVER_NAME'};
- my $firsturl=$ENV{'request.firsturl'};
+ my $firsturl=
+ ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'});
# ---------------------------------------- Are we access server and overloaded?
if (($role eq 'access') && ($loadpercent>100.0)) {
- $otherserver=Apache::lonnet::spareserver();
+ $otherserver=Apache::lonnet::spareserver($loadpercent);
}
# -------------------------------------------------------- Set login parameters
@@ -101,10 +120,42 @@ sub handler {
my $uextkey=hex($ukey);
if ($uextkey>2147483647) { $uextkey-=4294967296; }
+# -------------------------------------------------------- Store away log token
my $logtoken=Apache::lonnet::reply(
'tmpput:'.$ukey.$lkey.'&'.$firsturl,
$lonhost);
+# ------------------- If we cannot talk to ourselves, we are in serious trouble
+
+ if ($logtoken eq 'con_lost') {
+ my $spares='';
+ foreach (keys %Apache::lonnet::hostname) {
+ if ($_ ne $lonhost) {
+ $spares.='
'.
+ $Apache::lonnet::hostname{$_}.'';
+ if ($Apache::lonnet::spareid{$_}) {
+ $spares.=' (preferred)';
+ }
+ }
+ }
+ $r->print(<
+The LearningOnline Network with CAPA
+
+
+This LON-CAPA server is temporarily not available for login
+Please attempt to login to one of the following servers:
$spares
+If the problem persists, please contact $servadm.
+
+