--- loncom/auth/lonlogin.pm 2002/09/17 20:06:34 1.24 +++ loncom/auth/lonlogin.pm 2008/12/10 17:45:29 1.106.2.1 @@ -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 1.106.2.1 2008/12/10 17:45:29 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,62 +25,139 @@ # # 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'}, + $ENV{'REDIRECT_QUERY_STRING'}), + ['interface','username','domain','firsturl','localpath','localres', + 'token']); + if (!defined($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'},['interface']); +# 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 ($handle=~/^publicuser\_/) { +# For "public user" - remove it, we apparently really want to login + unlink($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?').'

' + .$end_page + ); + return OK; + } + +# ---------------------------------------------------- No valid token, continue + + # ---------------------------- Not possible to really login to domain "public" + if ($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'; + } + } - $ENV{'form.interface'}=~s/\W//g; + my $fullgraph=($env{'form.interface'} ne 'textual'); - my $fullgraph=($ENV{'form.interface'} ne 'textual'); + my $iconpath= + &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); - my $iconpath= $r->dir_config('lonIconsURL'); - my $domain = $r->dir_config('lonDefDomain'); + 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 +178,213 @@ 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.='
'. + $hostname.''. + ' '.&mt('(preferred)').''.$/; + $last=$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( + '' + .'' + .&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; + } -# ---------------------------------------------------------- Serve rest of page - $r->print(</g; - +# ----------------------------------------------------------- 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 $textcol = + ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000'); + my $bgcol = + ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF'); + my $logo=&Apache::loncommon::designparm('login.logo',$domain); + my $img=&Apache::loncommon::designparm('login.img',$domain); + my $domainlogo=&Apache::loncommon::domainlogo($domain); + my $login=&Apache::loncommon::designparm('login.login',$domain); + if ($login eq '') { + $login = $iconpath.'/'.&mt('userauthentication.gif'); + } + my $showbanner = 1; + my $showmainlogo = 1; + if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { + $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); + } + if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { + $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); + } + my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); + my $showcoursecat = + &Apache::loncommon::designparm('login.coursecatalog',$domain); + my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain); + my $shownewuserlink = + &Apache::loncommon::designparm('login.newuser',$domain); + my $now=time; + my $js = (< function send() { - this.document.server.elements.uname.value + this.document.server.elements.uname.value =this.document.client.elements.uname.value; this.document.server.elements.udom.value =this.document.client.elements.udom.value; + this.document.server.elements.imagesuppress.value + =this.document.client.elements.imagesuppress.checked; + + this.document.server.elements.embedsuppress.value + =this.document.client.elements.embedsuppress.checked; + + this.document.server.elements.appletsuppress.value + =this.document.client.elements.appletsuppress.checked; + + this.document.server.elements.fontenhance.value + =this.document.client.elements.fontenhance.checked; + + this.document.server.elements.blackwhite.value + =this.document.client.elements.blackwhite.checked; + + this.document.server.elements.remember.value + =this.document.client.elements.remember.checked; + uextkey=this.document.client.elements.uextkey.value; lextkey=this.document.client.elements.lextkey.value; initkeys(); - this.document.server.elements.upass.value - =crypted(this.document.client.elements.upass.value); + this.document.server.elements.upass0.value + =crypted(this.document.client.elements.upass$now.value.substr(0,15)); + this.document.server.elements.upass1.value + =crypted(this.document.client.elements.upass$now.value.substr(15,15)); + this.document.server.elements.upass2.value + =crypted(this.document.client.elements.upass$now.value.substr(30,15)); + + this.document.client.elements.uname.value=''; + this.document.client.elements.upass$now.value=''; this.document.server.submit(); - return false; + return false; } + ENDSCRIPT +# --------------------------------------------------- Print login screen header + + my %add_entries = (topmargin => "0", + leftmargin => "0", + marginheight => "0", + marginwidth => "0", + bgcolor => "$pgbg", + text => "$font", + link => "$link", + vlink => "$vlink", + alink => "$alink",); + + $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$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', + 'about' => 'About LON-CAPA', + 'access' => 'Accessibility Options', + 'catalog' => 'Course Catalog', + 'log' => 'Log in', + 'help' => 'Log-in Help', + 'serv' => 'Server', + 'servadm' => 'Server Administration', + 'helpdesk' => 'Contact Helpdesk', + 'forgotpw' => 'Forgot password?', + 'newuser' => 'New User?', + 'options_headline' => 'Select Accessibility Options', + 'sprs_img' => 'Suppress rendering of images', + 'sprs_applet' => 'Suppress Java applets', + 'sprs_embed' => 'Suppress rendering of embedded multimedia', + 'sprs_font' => 'Increase font size', + 'sprs_blackwhite' => 'Switch to black and white mode', + 'remember' => 'Remember these settings for next login'); +# -------------------------------------------------- Change password field name + my $forgotpw = &forgotpwdisplay(%lt); + my $loginhelp = &loginhelpdisplay(%lt); + +# ---------------------------------------------------- Serve out DES JavaScript + { + my $jsh=Apache::File->new($include."/londes.js"); + $r->print(<$jsh>); + } +# ---------------------------------------------------------- Serve rest of page + if ($fullgraph) { $r->print( ''); @@ -165,20 +392,47 @@ ENDSCRIPT $r->print(< - - - - - - + + + + + + + + + + + + + + + + ENDSERVERFORM - if ($fullgraph) { $r->print(<print(< - + @@ -198,24 +452,39 @@ ENDSERVERFORM - + - - - '; + } else { + $logintitle = ''; + } + my $noscript_warning=''; $r->print(<
The Learning Online Network with CAPA +HEADER + if ($showbanner) { + $r->print(< +ENDBANNER + } + $r->print(<
- Accessibility Options -
- About LON-CAPA + 		+ + + + + + + + + $coursecatalog + + + +
 $lt{'access'}
 $lt{'about'}
 
 + +ENDSTART + if ($showmainlogo) { + $r->print(< +ENDLOGO + } + $r->print(< @@ -227,31 +496,77 @@ ENDSERVERFORM ENDTOP -} + } else { + $r->print('

The LearningOnline Network with CAPA

' + .'

'.&mt('Text-based Interface Login').'

' + .$announcements); + } + $r->print('
'); + unless ($fullgraph) { + $r->print(<$lt{'options_headline'} +
+
+
+
+
+
+ $lt{'remember'}
+ENDACCESSOPTIONS + } else { + $r->print(< + + + + + +ENDNOOPT + } + my $logintitle; + if ($loginheader eq 'text') { + $logintitle = '
   '.$lt{'log'}.''. + &mt('User Authentication').'' + .'
- + $logintitle + $noscript_warning + + + + - - + + - - + + - - + + -
User Authentication

   :

   User Name:
   :
   Password:   :
   Domain:  +
+ +
+ + $loginhelp + $forgotpw + $newuserlink
-
@@ -259,12 +574,18 @@ ENDTOP ENDLOGIN if ($fullgraph) { + my $helpdeskscript; + my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, + $version,$authdomain,\$helpdeskscript); $r->print(< + +$announcements + @@ -276,7 +597,7 @@ ENDLOGIN + + + +
-    Domain:  +    $lt{'dom'}:   $domain @@ -284,7 +605,7 @@ ENDLOGIN
-    Server:  +    $lt{'serv'}:   $lonhost ($role) @@ -292,20 +613,23 @@ ENDLOGIN
-    Load:  +    $lt{'load'}:  -  $loadpercent percent +  $loadpercent $lt{'perc'} +
+    $lt{'userload'}:  + +  $userloadpercent $lt{'perc'}

- -    System Administration:
-       $sysadm
-    Server Administration:
-       $servadm
  - + $contactblock @@ -335,11 +659,86 @@ $domainlogo + +$helpdeskscript + ENDDOCUMENT } - $r->print(''); + my %endargs = ( 'noredirectlink' => 1, ); + $r->print(&Apache::loncommon::end_page(\%endargs)); return OK; -} +} + +sub contactdisplay { + my ($lt,$servadm,$showadminmail,$version,$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 + } + $contactblock .= <<"ENDBLOCK"; +    $version +ENDBLOCK + return $contactblock; +} + +sub forgotpwdisplay { + my (%lt) = @_; + my $prompt_for_resetpw = 1; + if ($prompt_for_resetpw) { + return '
   '.$lt{'forgotpw'}.'
'; + } + return; +} + +sub loginhelpdisplay { + my (%lt) = @_; + my $login_help = 1; + if ($login_help) { + return '   '.$lt{'help'}.''; + } + return; +} + +sub coursecatalog_link { + my ($linkname) = @_; + return <<"END"; + +   + $linkname + +END +} + +sub newuser_link { + my ($linkname) = @_; + return '   '.$linkname.'
'; +} 1; __END__