--- loncom/auth/lonlogin.pm 2002/09/17 20:06:34 1.24
+++ loncom/auth/lonlogin.pm 2008/01/24 15:06:21 1.100
@@ -1,7 +1,7 @@
# The LearningOnline Network
# Login Screen
#
-# $Id: lonlogin.pm,v 1.24 2002/09/17 20:06:34 matthew Exp $
+# $Id: lonlogin.pm,v 1.100 2008/01/24 15:06:21 bisitz Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -25,62 +25,136 @@
#
# http://www.lon-capa.org/
#
-# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
-# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9,
-# 1/17/01 Gerd Kortemeyer
-#
-# 2/7/02,2/8,2/12,2/14,2/15,2/19 Josh Brunskole
-#
-# 7/10/02 Jeremy Bowers
package Apache::lonlogin;
use strict;
use Apache::Constants qw(:common);
use Apache::File ();
-use Apache::lonnet();
+use Apache::lonnet;
use Apache::loncommon();
-
+use Apache::lonauth();
+use Apache::lonlocal;
+use Apache::migrateuser();
+use lib '/home/httpd/lib/perl/';
+use LONCAPA;
+
sub handler {
my $r = shift;
- $r->content_type('text/html');
+
+ &Apache::loncommon::get_unprocessed_cgi
+ (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
+ $ENV{'REDIRECT_QUERY_STRING'}),
+ ['interface','username','domain','firsturl','localpath','localres',
+ 'token']);
+
+# -- check if they are a migrating user
+ if (defined($env{'form.token'})) {
+ return &Apache::migrateuser::handler($r);
+ }
+
&Apache::loncommon::no_cache($r);
+ &Apache::lonlocal::get_language_handle($r);
+ &Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
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;
+ }
+
- $ENV{'form.interface'}=~s/\W//g;
+# -------------------------------- Prevent users from attempting to login twice
+ my $handle = &Apache::lonnet::check_for_valid_session($r);
+ if ($handle=~/^publicuser\_/) {
+# For "public user" - remove it, we apparently really want to login
+ unlink($r->dir_config('lonIDsDir')."/$handle.id");
+ } elsif ($handle ne '') {
+# Indeed, a valid token is found
+ my $start_page =
+ &Apache::loncommon::start_page('Already logged in');
+ my $end_page =
+ &Apache::loncommon::end_page();
+ $r->print(
+ $start_page
+ .''.&mt('You are already logged in').'
'
+ .''.&mt('Please either [_1]continue the current session[_2] or [_3]logout[_4].',
+ '','','','').'
'
+ .''.&mt('Login problems?').'
'
+ .$end_page
+ );
+ return OK;
+ }
- my $fullgraph=($ENV{'form.interface'} ne 'textual');
+# ---------------------------------------------------- No valid token, continue
- my $iconpath= $r->dir_config('lonIconsURL');
- my $domain = $r->dir_config('lonDefDomain');
+ # ---------------------------- Not possible to really login to domain "public"
+ if ($env{'form.domain'} eq 'public') {
+ $env{'form.domain'}='';
+ $env{'form.username'}='';
+ }
+# ----------------------------------------------------------- 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 $iconpath=
+ &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
+
+ my $domain = &Apache::lonnet::default_login_domain();
+ if (($env{'form.domain'}) &&
+ (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
+ $domain=$env{'form.domain'};
+ }
my $role = $r->dir_config('lonRole');
my $loadlim = $r->dir_config('lonLoadLim');
my $servadm = $r->dir_config('lonAdmEMail');
- my $sysadm = $r->dir_config('lonSysEMail');
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');
+ my $host_name = &Apache::lonnet::hostname($lonhost);
+
+# --------------------------------------------- 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 $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
+ my $userloadpercent=&Apache::lonnet::userload();
- my $otherserver='http://'.$ENV{'SERVER_NAME'};
- my $firsturl=$ENV{'request.firsturl'};
-# ---------------------------------------- Are we access server and overloaded?
- if (($role eq 'access') && ($loadpercent>100.0)) {
- $otherserver=Apache::lonnet::spareserver($loadpercent);
+# ------------------------------------------------------- Do the load balancing
+ my $otherserver= &Apache::lonnet::absolute_url($host_name);
+ my $firsturl=
+ ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
+# ---------------------------------------------------------- Are we overloaded?
+ if ((($userloadpercent>100.0)||($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',
@@ -101,63 +175,198 @@ 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();
-# --------------------------------------------------- Print login screen header
- $r->print(<
-
-The LearningOnline Network with CAPA Login
-
-ENDHEADER
-# ---------------------------------------------------- Serve out DES JavaScript
- {
- my $jsh=Apache::File->new($include."/londes.js");
- $r->print(<$jsh>);
- }
-# ----------------------------------------------------------- Front page design
- my $pgbg=&Apache::loncommon::designparm('login.pgbg');
- my $font=&Apache::loncommon::designparm('login.font');
- my $link=&Apache::loncommon::designparm('login.link');
- my $vlink=&Apache::loncommon::designparm('login.vlink');
- my $alink=&Apache::loncommon::designparm('login.alink');
- my $mainbg=&Apache::loncommon::designparm('login.mainbg');
- my $sidebg=&Apache::loncommon::designparm('login.sidebg');
- my $logo=&Apache::loncommon::designparm('login.logo');
- my $img=&Apache::loncommon::designparm('login.img');
+# ------------------- If we cannot talk to ourselves, we are in serious trouble
+ if ($logtoken eq 'con_lost') {
+ my $spares='';
+ my $last;
+ foreach my $hostid (sort
+ {
+ &Apache::lonnet::hostname($a) cmp
+ &Apache::lonnet::hostname($b);
+ }
+ keys(%Apache::lonnet::spareid)) {
+ next if ($hostid eq $lonhost);
+ my $hostname = &Apache::lonnet::hostname($hostid);
+ next if ($last eq $hostname);
+ $spares.='
'.
+ $hostname.''.
+ ' (preferred)'.$/;
+ $last=$hostname;
+ }
+ $spares.= '
';
+ my %all_hostnames = &Apache::lonnet::all_hostnames();
+ foreach my $hostid (sort
+ {
+ &Apache::lonnet::hostname($a) cmp
+ &Apache::lonnet::hostname($b);
+ }
+ keys(%all_hostnames)) {
+ next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
+ my $hostname = &Apache::lonnet::hostname($hostid);
+ next if ($last eq $hostname);
+ $spares.='
'.
+ $hostname.'';
+ $last=$hostname;
+ }
+ $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
+
+