--- loncom/auth/lonlogin.pm 2001/11/29 19:12:44 1.11 +++ loncom/auth/lonlogin.pm 2006/11/01 21:27:50 1.82 @@ -1,7 +1,7 @@ # The LearningOnline Network # Login Screen # -# $Id: lonlogin.pm,v 1.11 2001/11/29 19:12:44 www Exp $ +# $Id: lonlogin.pm,v 1.82 2006/11/01 21:27:50 www Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,48 +25,166 @@ # # 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 -# + package Apache::lonlogin; use strict; use Apache::Constants qw(:common); +use CGI::Cookie(); 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 additional_machine_domains { + my @domains; + open(my $fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/expected_domains.tab'); + while( my $line = <$fh>) { + $line =~ s/\s//g; + push(@domains,$line); + } + return @domains; +} 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; - my $iconpath= $r->dir_config('lonIconsURL'); + +# Are we re-routing? + if (-e '/home/httpd/html/lon-status/reroute.txt') { + &Apache::lonauth::reroute($r); + return OK; + } + + +# -------------------------------- Prevent users from attempting to login twice + my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); + my $lonid=$cookies{'lonID'}; + my $cookie; + if ($lonid) { + my $handle=$lonid->value; + $handle=~s/\W//g; + my $lonidsdir=$r->dir_config('lonIDsDir'); + if (-e "$lonidsdir/$handle.id") { +# Is there an existing token file? + if ($handle=~/^publicuser\_/) { +# For "public user" - remove it, we apparently really want to login + unlink("$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(<You are already logged in +

Please either continue the current session or +logout.

+

+Problems?

+$end_page +ENDFAILED + return OK; + } + } + } + +# ---------------------------------------------------- No valid token, continue + + # ---------------------------- Not possible to really login to domain "public" + if ($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 $port_to_use=$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'); + my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0]; + foreach my $posdom (&Apache::lonnet::current_machine_domains(), + &additional_machine_domains()) { + if (lc($posdom) eq lc($testdomain)) { $domain=$posdom; } + } + 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'); - 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'}; +# ------------------------------------------------------- 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 access server and overloaded? - if (($role eq 'access') && ($loadpercent>100.0)) { - $otherserver=Apache::lonnet::spareserver(); + if (($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', @@ -82,15 +200,73 @@ sub handler { } my $lextkey=hex($lkey); + if ($lextkey>2147483647) { $lextkey-=4294967296; } + 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=''; + my $last; + foreach my $hostid (sort + { + $Apache::lonnet::hostname{$a} cmp + $Apache::lonnet::hostname{$b}; + } + keys(%Apache::lonnet::spareid)) { + next if ($hostid eq $lonhost); + next if ($last eq $Apache::lonnet::hostname{$hostid}); + $spares.='
'. + $Apache::lonnet::hostname{$hostid}.''. + ' (preferred)'.$/; + $last=$Apache::lonnet::hostname{$hostid}; + } + $spares.= '
'; + foreach my $hostid (sort + { + $Apache::lonnet::hostname{$a} cmp + $Apache::lonnet::hostname{$b}; + } + keys(%Apache::lonnet::hostname)) { + next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); + next if ($last eq $Apache::lonnet::hostname{$hostid}); + $spares.='
'. + $Apache::lonnet::hostname{$hostid}.''; + $last=$Apache::lonnet::hostname{$hostid}; + } + $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 + + +ENDTROUBLE + return OK; + } + +# ----------------------------------------------- Apparently we are in business + + my $domainlogo=&Apache::loncommon::domainlogo($domain); + # --------------------------------------------------- Print login screen header $r->print(< + The LearningOnline Network with CAPA Login ENDHEADER @@ -99,89 +275,356 @@ ENDHEADER my $jsh=Apache::File->new($include."/londes.js"); $r->print(<$jsh>); } -# ---------------------------------------------------------- Serve rest of page - $r->print(< +# ----------------------------------------------------------- Front page design + my $pgbg= + ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF'); + my $font= + ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000'); + my $link= + ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF'); + my $vlink= + ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF'); + my $alink=&Apache::loncommon::designparm('login.alink',$domain); + my $mainbg= + ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF'); + my $sidebg= + ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF'); + my $logo=&Apache::loncommon::designparm('login.logo',$domain); + my $img=&Apache::loncommon::designparm('login.img',$domain); + +# ----------------------------------------------------------------------- Texts + +my %lt=&Apache::lonlocal::texthash( + 'un' => 'Username', + 'pw' => 'Password', + 'dom' => 'Domain', + 'perc' => 'percent', + 'load' => 'Load', + 'userload' => 'User Load', + 'about' => 'aboutlon.gif', + 'access' => 'accessbutton.gif', + 'auth' => 'userauthentication.gif', + 'log' => 'Log in', + 'help' => 'Help', + 'serv' => 'Server', + 'helpdesk' => 'Contact Helpdesk'); +# -------------------------------------------------- Change password field name + my $now=time; +# ---------------------------------------------------------- Serve rest of page + $r->print(< + - function send() { + +ENDSCRIPT - + if ($fullgraph) { + $r->print( + ''); + } + + $r->print(< + + + + + + + + + + + + + + + + + +ENDSERVERFORM + if ($fullgraph) { $r->print(< + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + -Accessibility Options -   -About LON-CAPA

-

The Learning Online Network with CAPA
 
+ Accessibility Options +
+ About LON-CAPA + 		+
+ +
+
+ENDTOP +} else { + $r->print('

The LearningOnline Network with CAPA

Text-based Interface Login

'.$announcements); +} + $r->print('
'); + unless ($fullgraph) { + $r->print(<Select Accessibility Options +
+
+
+
+
+ Remember these settings for next login
+ENDACCESSOPTIONS +} else { + $r->print(< + + + + + +ENDNOOPT +} + $r->print(< + + + + + + + + + + + + + + + + + + + + + +
User Authentication

   $lt{'un'}:
   $lt{'pw'}:
   $lt{'dom'}:
   $lt{'help'} +
+ +
+ + +ENDLOGIN + if ($fullgraph) { + my $helpdeskscript; + my $contactblock = &contactdisplay(\%lt,$version,$authdomain,\$helpdeskscript); + $r->print(< + + +
$announcements
+
+ + + + + + + + + + + + + + + + + +
+    $lt{'dom'}:  + +  $domain +
+    $lt{'serv'}:  + +  $lonhost ($role) +
+    $lt{'load'}:  + +  $loadpercent $lt{'perc'} +
+    $lt{'userload'}:  + +  $userloadpercent $lt{'perc'} +
+
+ $contactblock + 		+$domainlogo +
- - -
- -User Authentication

- -

- - - - - -
- -
- - - - - - + + + + + + + + + + + + + + + + +
Username:
Password:
Domain:
 
- - -
-
- - - - - - - - -
Domain:$domainSystem Administration:
- $sysadm
- Server Administration:
- $servadm
Server:$lonhost ($role)
Load:$loadpercent percent
-		 - -Laboratory for
-Instructional
-Technology in
-Education		 -
- - + +$helpdeskscript + ENDDOCUMENT +} + $r->print(''); return OK; -} +} + +sub contactdisplay { + my ($lt,$version,$authdomain,$helpdeskscript) = @_; + my $contactblock; + my $showhelpdesk = 0; + my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; + if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { + $showhelpdesk = 1; + } + if ($showhelpdesk) { + $contactblock .= '   '.$$lt{'helpdesk'}.'
'; + my $thisurl = &escape('/adm/login'); + $$helpdeskscript = <<"ENDSCRIPT"; + +ENDSCRIPT + } + $contactblock .= <<"ENDBLOCK"; +    $version +ENDBLOCK + return $contactblock; +} + 1; __END__