--- loncom/auth/lonlogin.pm 2003/02/04 16:03:25 1.31 +++ loncom/auth/lonlogin.pm 2005/04/07 06:56:21 1.63 @@ -1,7 +1,7 @@ # The LearningOnline Network # Login Screen # -# $Id: lonlogin.pm,v 1.31 2003/02/04 16:03:25 www Exp $ +# $Id: lonlogin.pm,v 1.63 2005/04/07 06:56:21 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,40 +25,93 @@ # # 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 CGI::Cookie(); use Apache::File (); -use Apache::lonnet(); +use Apache::lonnet; use Apache::loncommon(); +use Apache::lonauth(); +use Apache::lonlocal; sub handler { my $r = shift; - $r->content_type('text/html'); &Apache::loncommon::no_cache($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','username','domain','firsturl']); +# Are we re-routing? + if (-e '/home/httpd/html/lon-status/reroute.txt') { + &Apache::lonauth::reroute($r); + return OK; + } - $ENV{'form.interface'}=~s/\W//g; +# -------------------------------- Prevent users from attempting to login twice + my %cookies=CGI::Cookie->parse($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") && ($handle ne '')) { +# Indeed, a valid token is found + my $bodytag=&Apache::loncommon::bodytag('Already logged in'); + $r->print(< + +Already logged in + +$bodytag +

You are already logged in

+

Please either continue the current session or +logout.

+

+Problems?

+ + +ENDFAILED + return OK; + } + } - my $fullgraph=($ENV{'form.interface'} ne 'textual'); +# ---------------------------------------------------- No valid token, continue - my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':8080'. + &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 $textbrowsers=$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 = $r->dir_config('lonDefDomain'); + if (($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'); @@ -66,30 +119,37 @@ 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); + 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(); # ------------------------------------------------------- Do the load balancing my $otherserver='http://'.$ENV{'SERVER_NAME'}; my $firsturl= - ($ENV{'request.firsturl'}?$ENV{'request.firsturl'}:$ENV{'form.firsturl'}); + ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); # ---------------------------------------- Are we access server and overloaded? - if (($role eq 'access') && ($loadpercent>100.0)) { - $otherserver=Apache::lonnet::spareserver($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 $announcements=&Apache::lonnet::getannounce(); # -------------------------------------------------------- Set login parameters my @hexstr=('0','1','2','3','4','5','6','7', @@ -119,15 +179,22 @@ sub handler { if ($logtoken eq 'con_lost') { my $spares=''; - foreach (keys %Apache::lonnet::hostname) { - if ($_ ne $lonhost) { - $spares.='
'. - $Apache::lonnet::hostname{$_}.''; - if ($Apache::lonnet::spareid{$_}) { - $spares.=' (preferred)'; - } - } + + foreach my $hostid (keys(%Apache::lonnet::spareid)) { + next if ($hostid eq $lonhost); + $spares.='
'. + $Apache::lonnet::hostname{$hostid}.''. + ' (preferred)'.$/; + } + $spares.= '
'; + foreach my $hostid (keys(%Apache::lonnet::hostname)) { + next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); + $spares.='
'. + $Apache::lonnet::hostname{$hostid}.''; } $r->print(< @@ -145,11 +212,15 @@ ENDTROUBLE # ----------------------------------------------- Apparently we are in business - my $domainlogo=&Apache::loncommon::domainlogo(); + my $domainlogo=&Apache::loncommon::domainlogo($domain); + $servadm=~s/\,/\
/g; + $sysadm=~s/\,/\
/g; + # --------------------------------------------------- Print login screen header $r->print(< + The LearningOnline Network with CAPA Login ENDHEADER @@ -160,16 +231,40 @@ ENDHEADER } # ----------------------------------------------------------- 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'); - + 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', + 'servadm' => 'Server Administration', + 'sysadm' => 'System Administration', + 'helpdesk' => 'Contact Helpdesk'); # ---------------------------------------------------------- Serve rest of page $r->print(<print(< - - - - - - + + + + + + + + + + + + + + ENDSERVERFORM if ($fullgraph) { $r->print(< - Accessibility Options + Accessibility Options
- About LON-CAPA + About LON-CAPA @@ -253,7 +374,7 @@ ENDSERVERFORM - +
@@ -268,32 +389,57 @@ ENDSERVERFORM ENDTOP +} else { + $r->print('

The LearningOnline Network with CAPA

Text-based Interface Login

'.$announcements); +} + $r->print('
'); + unless ($fullgraph) { + $r->print(<Select Accessibility Options + Suppress rendering of images
+ Suppress Java applets
+ Suppress rendering of embedded multimedia
+ Increase font size
+ Switch to black and white mode
+

If you have accessibility needs that are not addressed by this interface, +please +contact the system administrator at $sysadm.


+ Remember these settings for next login
+ENDACCESSOPTIONS +} else { + $r->print(< + + + + + +ENDNOOPT } $r->print(< - + - + - + - + - +
User Authentication
User Authentication

   User Name:
   $lt{'un'}:
   Password:   $lt{'pw'}:
   Domain:   $lt{'dom'}:
   Help   $lt{'help'}
- +
@@ -301,12 +447,17 @@ ENDTOP ENDLOGIN if ($fullgraph) { + my $helpdeskscript; + my $contactblock = &contactdisplay(\%lt,$sysadm,$servadm,$version,$authdomain,\$helpdeskscript); $r->print(< + +$announcements + @@ -318,7 +469,7 @@ ENDLOGIN + + + +
-    Domain:  +    $lt{'dom'}:   $domain @@ -326,7 +477,7 @@ ENDLOGIN
-    Server:  +    $lt{'serv'}:   $lonhost ($role) @@ -334,20 +485,23 @@ ENDLOGIN
-    Load:  +    $lt{'load'}:  + +  $loadpercent $lt{'perc'} +
+    $lt{'userload'}:  -  $loadpercent percent +  $userloadpercent $lt{'perc'}

- -    System Administration:
-       $sysadm
-    Server Administration:
-       $servadm
  - + $contactblock @@ -377,16 +531,59 @@ $domainlogo - +$helpdeskscript ENDDOCUMENT } $r->print(''); return OK; -} +} + +sub contactdisplay { + my ($lt,$sysadm,$servadm,$version,$authdomain,$helpdeskscript) = @_; + my $contactblock; + my $showsysadm = 1; + my $showservadm = 1; + my $showhelpdesk = 0; + my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; + if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { + $showhelpdesk = 1; + } + if ($showsysadm) { + $contactblock .= '   '.$$lt{'sysadm'}.':
'. + '      '.$sysadm.'
'; + } + if ($showservadm) { + $contactblock .= '   '.$$lt{'servadm'}.':
'. + '      '.$servadm.'
 
'; + } + if ($showhelpdesk) { + $contactblock .= '   '.$$lt{'helpdesk'}.'
'; + my $thisurl = &Apache::lonnet::escape('/adm/login'); + $$helpdeskscript = <<"ENDSCRIPT"; + +ENDSCRIPT + } + $contactblock .= <<"ENDBLOCK"; +    $version +ENDBLOCK + return $contactblock; +} + 1; __END__