--- loncom/auth/lonlogin.pm 2002/09/17 19:45:11 1.22
+++ loncom/auth/lonlogin.pm 2003/09/11 20:54:11 1.49
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Login Screen
#
-# $Id: lonlogin.pm,v 1.22 2002/09/17 19:45:11 matthew Exp $
+# $Id: lonlogin.pm,v 1.49 2003/09/11 20:54:11 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -40,6 +40,7 @@ use Apache::Constants qw(:common);
use Apache::File ();
use Apache::lonnet();
use Apache::loncommon();
+use Apache::lonauth();
sub handler {
my $r = shift;
@@ -49,15 +50,40 @@ sub handler {
return OK if $r->header_only;
- &Apache::loncommon::get_unprocessed_cgi
- ($ENV{'QUERY_STRING'},['interface']);
+# Are we re-routing?
+ if (-e '/home/httpd/html/lon-status/reroute.txt') {
+ &Apache::lonauth::reroute($r);
+ return OK;
+ }
+ &Apache::loncommon::get_unprocessed_cgi
+ ($ENV{'QUERY_STRING'}.'&'.$ENV{'request.querystring'},
+ ['interface','username','domain','firsturl','localpath','localres']);
+
+# ----------------------------------------------------------- Process Interface
$ENV{'form.interface'}=~s/\W//g;
- my $fullgraph=($ENV{'form.interface'} ne 'textual');
+ my $textbrowsers=$r->dir_config('lonTextBrowsers');
+ my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
+
+ foreach (split(/\:/,$textbrowsers)) {
+ if ($httpbrowser=~/$_/i) {
+ $ENV{'form.interface'}='textual';
+ }
+ }
- my $iconpath= $r->dir_config('lonIconsURL');
+ my $fullgraph=($ENV{'form.interface'} ne 'textual');
+ my $port_to_use=$r->dir_config('lonhttpdPort');
+ if (!defined($port_to_use)) {
+ $port_to_use='8080';
+ }
+ my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use.
+ $r->dir_config('lonIconsURL');
my $domain = $r->dir_config('lonDefDomain');
+ if (($ENV{'form.domain'}) &&
+ ($Apache::lonnet::domaindescription{$ENV{'form.domain'}})) {
+ $domain=$ENV{'form.domain'};
+ }
my $role = $r->dir_config('lonRole');
my $loadlim = $r->dir_config('lonLoadLim');
my $servadm = $r->dir_config('lonAdmEMail');
@@ -65,22 +91,37 @@ sub handler {
my $lonhost = $r->dir_config('lonHostID');
my $tabdir = $r->dir_config('lonTabDir');
my $include = $r->dir_config('lonIncludes');
+ my $expire = $r->dir_config('lonExpire');
+ my $version = $r->dir_config('lonVersion');
+
+# --------------------------------------------- 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');
- $loadavg=<$loadfile>;
- }
+ {
+ my $loadfile=Apache::File->new('/proc/loadavg');
+ $loadavg=<$loadfile>;
+ }
$loadavg =~ s/\s.*//g;
my $loadpercent=100*$loadavg/$loadlim;
+ my $userloadpercent=&Apache::lonnet::userload();
+# ------------------------------------------------------- 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 (($loadpercent>100.0)) {
- $otherserver=Apache::lonnet::spareserver($loadpercent);
+ if (($role eq 'access') &&
+ (($userloadpercent>100.0)||($loadpercent>100.0))) {
+ my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
+ if ($unloaded) { $otherserver=$unloaded; }
}
+# ----------------------------------------------------------- Get announcements
+ my $announcements=&Apache::lonnet::getannounce();
# -------------------------------------------------------- Set login parameters
my @hexstr=('0','1','2','3','4','5','6','7',
@@ -101,14 +142,50 @@ 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);
- my $domainlogo=&Apache::loncommon::domainlogo();
+
+# ------------------- If we cannot talk to ourselves, we are in serious trouble
+
+ if ($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.
+
+