--- loncom/auth/lonlogin.pm 2003/07/16 20:42:31 1.43 +++ loncom/auth/lonlogin.pm 2010/08/25 16:34:32 1.140 @@ -1,7 +1,7 @@ # The LearningOnline Network # Login Screen # -# $Id: lonlogin.pm,v 1.43 2003/07/16 20:42:31 www Exp $ +# $Id: lonlogin.pm,v 1.140 2010/08/25 16:34:32 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,67 +25,122 @@ # # 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'}, + $ENV{'REDIRECT_QUERY_STRING'}), + ['interface','username','domain','firsturl','localpath','localres', + 'token','role','symb']); + if (!defined($env{'form.firsturl'})) { + &Apache::lonacc::get_posted_cgi($r,['firsturl']); + } + +# -- check if they are a migrating user + if (defined($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'}.'&'.$ENV{'request.querystring'}, - ['interface','username','domain','firsturl','localpath','localres']); - +# Are we re-routing? + if (-e '/home/httpd/html/lon-status/reroute.txt') { + &Apache::lonauth::reroute($r); + return OK; + } + + +# -------------------------------- Prevent users from attempting to login twice + my $handle = &Apache::lonnet::check_for_valid_session($r); + if ($handle ne '') { + my $lonidsdir=$r->dir_config('lonIDsDir'); + if ($handle=~/^publicuser\_/) { +# For "public user" - remove it, we apparently really want to login + unlink($r->dir_config('lonIDsDir')."/$handle.id"); + } else { +# Indeed, a valid token is found + &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); + my $start_page = + &Apache::loncommon::start_page('Already logged in'); + my $end_page = + &Apache::loncommon::end_page(); + my $dest = '/adm/roles'; + if ($env{'form.firsturl'} ne '') { + $dest = $env{'form.firsturl'}; + } + $r->print( + $start_page + .'

'.&mt('You are already logged in!').'

' + .'

'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', + '','','','').'

' + .$end_page + ); + return OK; + } + } + +# ---------------------------------------------------- No valid token, continue + + # ---------------------------- Not possible to really login to domain "public" + if ($env{'form.domain'} eq 'public') { + $env{'form.domain'}=''; + $env{'form.username'}=''; + } # ----------------------------------------------------------- Process Interface - $ENV{'form.interface'}=~s/\W//g; + $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 $iconpath= + &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); + + my $lonhost = $r->dir_config('lonHostID'); + my $domain = &Apache::lonnet::default_login_domain(); + if ($lonhost ne '') { + my $redirect = &check_loginvia($domain,$lonhost); + if ($redirect) { + $r->print($redirect); + return OK; + } } - 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::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); + my $authusername=($env{'form.username'}?$env{'form.username'}:''); + my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); # ---------------------------------------------------------- Determine own load my $loadavg; @@ -94,19 +149,13 @@ sub handler { $loadavg=<$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'}); -# ---------------------------------------- Are we access server and overloaded? - if (($role eq 'access') && - (($userloadpercent>100.0)||($loadpercent>100.0))) { - $otherserver=Apache::lonnet::spareserver($loadpercent,$userloadpercent); - } - + ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); +# ----------------------------------------------------------- Get announcements + my $announcements=&Apache::lonnet::getannounce(); # -------------------------------------------------------- Set login parameters my @hexstr=('0','1','2','3','4','5','6','7', @@ -128,351 +177,475 @@ sub handler { if ($uextkey>2147483647) { $uextkey-=4294967296; } # -------------------------------------------------------- Store away log token + my $tokenextras; + if ($env{'form.role'}) { + $tokenextras = '&role='.&escape($env{'form.role'}); + } + if ($env{'form.symb'}) { + if (!$tokenextras) { + $tokenextras = '&'; + } + $tokenextras .= '&symb='.&escape($env{'form.symb'}); + } my $logtoken=Apache::lonnet::reply( - 'tmpput:'.$ukey.$lkey.'&'.$firsturl, + 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, $lonhost); # ------------------- If we cannot talk to ourselves, we are in serious trouble if ($logtoken eq 'con_lost') { my $spares=''; - foreach (keys %Apache::lonnet::hostname) { - if ($_ ne $lonhost) { - $spares.='
'. - $Apache::lonnet::hostname{$_}.''; - if ($Apache::lonnet::spareid{$_}) { - $spares.=' (preferred)'; - } - } + 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.='
'. + $hostname.''. + ' '.&mt('(preferred)').''.$/; + $last=$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 -

If the problem persists, please contact $servadm.

- - -ENDTROUBLE - return OK; - } +$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( + '' + .'' + .&mt('The LearningOnline Network with CAPA') + .'' + .'' + .'

'.&mt('The LearningOnline Network with CAPA').'

' + .'' + .'

'.&mt('This LON-CAPA server is temporarily not available for login.').'

' + .'

'.&mt('Please attempt to login to one of the following servers:').'

' + .$spares + .'' + .'' +); +return OK; +} # ----------------------------------------------- Apparently we are in business - - my $domainlogo=&Apache::loncommon::domainlogo(); - $servadm=~s/\,/\
/g; - $sysadm=~s/\,/\
/g; - -# --------------------------------------------------- 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>); - } +$servadm=~s/\,/\
/g; # ----------------------------------------------------------- Front page design - my $pgbg= - ($fullgraph?&Apache::loncommon::designparm('login.pgbg'):'#FFFFFF'); - my $font= - ($fullgraph?&Apache::loncommon::designparm('login.font'):'#000000'); - my $link= - ($fullgraph?&Apache::loncommon::designparm('login.link'):'#0000FF'); - my $vlink= - ($fullgraph?&Apache::loncommon::designparm('login.vlink'):'#0000FF'); - my $alink=&Apache::loncommon::designparm('login.alink'); - my $mainbg= - ($fullgraph?&Apache::loncommon::designparm('login.mainbg'):'#FFFFFF'); - my $sidebg= - ($fullgraph?&Apache::loncommon::designparm('login.sidebg'):'#FFFFFF'); - my $logo=&Apache::loncommon::designparm('login.logo'); - my $img=&Apache::loncommon::designparm('login.img'); - - -# ---------------------------------------------------------- Serve rest of page - $r->print(< - - - this.document.server.elements.blackwhite.value - =this.document.client.elements.blackwhite.checked; +ENDSCRIPT - this.document.server.elements.remember.value - =this.document.client.elements.remember.checked; +# --------------------------------------------------- Print login screen header - uextkey=this.document.client.elements.uextkey.value; - lextkey=this.document.client.elements.lextkey.value; - initkeys(); +my %add_entries = ( + bgcolor => "$mainbg", + text => "$font", + link => "$link", + vlink => "$vlink", + alink => "$alink", + onload => 'javascript:enableInput();',); + +$r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, + { 'redirect' => [$expire,'/adm/roles'], + 'add_entries' => \%add_entries, + 'only_body' => 1,})); + +# ----------------------------------------------------------------------- Texts + +my %lt=&Apache::lonlocal::texthash( + 'un' => 'Username', + 'pw' => 'Password', + 'dom' => 'Domain', + 'perc' => 'percent', + 'load' => 'Server Load', + 'userload' => 'User Load', + 'catalog' => 'Course/Community Catalog', + 'log' => 'Log in', + 'help' => 'Log-in Help', + 'serv' => 'Server', + 'servadm' => 'Server Administration', + 'helpdesk' => 'Contact Helpdesk', + 'forgotpw' => 'Forgot password?', + 'newuser' => 'New User?', + ); +# -------------------------------------------------- Change password field name + +my $forgotpw = &forgotpwdisplay(%lt); +$forgotpw .= '
' if $forgotpw; +my $loginhelp = &loginhelpdisplay($authdomain,%lt); +$loginhelp .= '
' if $loginhelp; - this.document.server.elements.upass.value - =crypted(this.document.client.elements.upass.value); +# ---------------------------------------------------- Serve out DES JavaScript +{ +my $jsh=Apache::File->new($include."/londes.js"); +$r->print(<$jsh>); +} +# ---------------------------------------------------------- Serve rest of page - this.document.server.submit(); - return false; - } - -ENDSCRIPT +$r->print( + '
' +); - if ($fullgraph) { - $r->print( - ''); - } +# +# If the loadbalancing yielded just http:// because perhaps there's no loadbalancing? +# then just us a relative link to authenticate: +# - $r->print(< +$r->print(< - - + + + - - - - - - - - + + ENDSERVERFORM - if ($fullgraph) { $r->print(< - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + - - + +$helpdeskscript - - +ENDDOCUMENT + my %endargs = ( 'noredirectlink' => 1, ); + $r->print(&Apache::loncommon::end_page(\%endargs)); + return OK; +} - - - - +sub check_loginvia { + my ($domain,$lonhost) = @_; + if ($domain eq '' || $lonhost eq '') { + return; + } + my %domconfhash = &Apache::loncommon::get_domainconf($domain); + my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; + my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; + my $output; + if ($loginvia ne '') { + my $noredirect; + my $ip = $ENV{'REMOTE_ADDR'}; + if ($ip eq '127.0.0.1') { + $noredirect = 1; + } else { + if ($loginvia_exempt ne '') { + my @exempt = split(',',$loginvia_exempt); + if (grep(/^\Q$ip\E$/,@exempt)) { + $noredirect = 1; + } + } + } + unless ($noredirect) { + my ($newhost,$path); + if ($loginvia =~ /:/) { + ($newhost,$path) = split(':',$loginvia); + } else { + $newhost = $loginvia; + } + if ($newhost ne $lonhost) { + if (&Apache::lonnet::hostname($newhost) ne '') { + $output = &redirect_page($newhost,$path); + } + } + } + } + return $output; +} - - +sub redirect_page { + my ($desthost,$path) = @_; + my $protocol = $Apache::lonnet::protocol{$desthost}; + $protocol = 'http' if ($protocol ne 'https'); + unless ($path =~ m{^/}) { + $path = '/'.$path; + } + my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path; + if ($env{'form.firsturl'} ne '') { + $url .='?firsturl='.$env{'form.firsturl'}; + } + my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, + {'redirect' => [0,$url],}); + my $end_page = &Apache::loncommon::end_page(); + return $start_page.$end_page; +} - - +sub contactdisplay { + my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript) = @_; + my $contactblock; + my $showhelpdesk = 0; + my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; + if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { + $showhelpdesk = 1; + } + if ($servadm && $showadminmail) { + $contactblock .= $$lt{'servadm'}.':
'. + ''.$servadm.'
'; + } + if ($showhelpdesk) { + $contactblock .= ''.$lt->{'helpdesk'}.'
'; + my $thisurl = &escape('/adm/login'); + $$helpdeskscript = <<"ENDSCRIPT"; + +ENDSCRIPT + } + return $contactblock; +} - - +sub forgotpwdisplay { + my (%lt) = @_; + my $prompt_for_resetpw = 1; + if ($prompt_for_resetpw) { + return ''.$lt{'forgotpw'}.''; + } + return; +} - - - -
The Learning Online Network with CAPA
 
- Accessibility Options -
- About LON-CAPA - 		-
- -
-
-ENDTOP -} else { - $r->print('

The LearningOnline Network with CAPA

Text-based Interface Login

'); +my $coursecatalog; +if (($showcoursecat eq '') || ($showcoursecat)) { + $coursecatalog = &coursecatalog_link($lt{'catalog'}).'
'; } - $r->print('
'); - unless ($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 Name:
   Password:
   Domain:
   Help -
- -
- - -ENDLOGIN - if ($fullgraph) { - $r->print(< - - -
-
- +my $newuserlink; +if ($shownewuserlink) { + $newuserlink = &newuser_link($lt{'newuser'}).'
'; +} +my $logintitle = + '

' + .$lt{'log'} + .'

'; + +my $noscript_warning=''; +my $helpdeskscript; +my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, + $authdomain,\$helpdeskscript); + +my $loginform=(< + + + :
+
+ :
+
+ :
+
+ + +LFORM + + if ($showbanner) { + $r->print(< +
+ The Learning Online Network with CAPA +
+HEADER + } + $r->print(< +
+ $logintitle + $loginform + $noscript_warning +
+ +
+ $loginhelp + $forgotpw + $contactblock + $newuserlink + $coursecatalog +
+ + +
+ENDTOP + if ($showmainlogo) { + $r->print(' '."\n"); + } +$r->print(< +
+ENDTOP + +$r->print(<
- - - - - - - + - + +
-    Domain:  + + $lt{'dom'}:  +  $domain
-    Server:  + + $lt{'serv'}:  +  $lonhost ($role)
-    Load:  + + $lt{'load'}:  -  $loadpercent percent + +  $loadpercent $lt{'perc'}
-    User Load:  + + $lt{'userload'}:  + +  $userloadpercent $lt{'perc'} -  $userloadpercent percent +
+ $version
-
- -    System Administration:
-       $sysadm
-    Server Administration:
-       $servadm
  - - 		-$domainlogo -
 
+sub loginhelpdisplay { + my ($authdomain,%lt) = @_; + my $login_help = 1; + if ($login_help) { + my $dom = $authdomain; + if ($dom eq '') { + $dom = &Apache::lonnet::default_login_domain(); + } + my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom); + my $loginhelp_url = $helpconfig{'helpsettings'}{'loginhelpurl'}; + if ($loginhelp_url ne '') { + return ''.$lt{'help'}.''; + } else { + return ''.$lt{'help'}.''; + } + } + return; +} - +sub coursecatalog_link { + my ($linkname) = @_; + return <<"END"; + $linkname +END +} -ENDDOCUMENT +sub newuser_link { + my ($linkname) = @_; + return ''.$linkname.''; } - $r->print(''); - return OK; -} 1; __END__