Annotation of modules/gci/lonlogin.pm, revision 1.2

1.1       gci         1: # The LearningOnline Network
                      2: # Login Screen
                      3: #
1.2     ! gci         4: # $Id: lonlogin.pm,v 1.1 2009/09/17 01:55:01 gci Exp $
1.1       gci         5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: 
                     29: package Apache::lonlogin;
                     30: 
                     31: use strict;
                     32: use Apache::Constants qw(:common);
                     33: use Apache::File ();
                     34: use Apache::lonnet;
                     35: use Apache::loncommon();
                     36: use Apache::lonauth();
                     37: use Apache::lonlocal;
                     38: use Apache::migrateuser();
                     39: use lib '/home/httpd/lib/perl/';
                     40: use LONCAPA;
                     41:  
                     42: sub handler {
                     43:     my $r = shift;
                     44: 
                     45:     &Apache::loncommon::get_unprocessed_cgi
                     46: 	(join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
                     47: 	      $ENV{'REDIRECT_QUERY_STRING'}),
                     48: 	 ['interface','username','domain','firsturl','localpath','localres',
1.2     ! gci        49: 	  'token','role','symb']);
1.1       gci        50:     if (!defined($env{'form.firsturl'})) {
                     51:         &Apache::lonacc::get_posted_cgi($r,['firsturl']);
                     52:     }
                     53: 
                     54: # -- check if they are a migrating user
                     55:     if (defined($env{'form.token'})) {
                     56: 	return &Apache::migrateuser::handler($r);
                     57:     }
                     58: 
                     59:     &Apache::loncommon::no_cache($r);
                     60:     &Apache::lonlocal::get_language_handle($r);
                     61:     &Apache::loncommon::content_type($r,'text/html');
                     62:     $r->send_http_header;
                     63:     return OK if $r->header_only;
                     64: 
                     65: 
                     66: # Are we re-routing?
                     67:     if (-e '/home/httpd/html/lon-status/reroute.txt') {
                     68: 	&Apache::lonauth::reroute($r);
                     69: 	return OK;
                     70:     }
                     71: 
                     72: 
                     73: # -------------------------------- Prevent users from attempting to login twice
                     74:     my $handle = &Apache::lonnet::check_for_valid_session($r);
                     75:     if ($handle=~/^publicuser\_/) {
                     76: # For "public user" - remove it, we apparently really want to login
                     77: 	unlink($r->dir_config('lonIDsDir')."/$handle.id");
                     78:     } elsif ($handle ne '') {
                     79: # Indeed, a valid token is found
                     80: 	my $start_page = 
                     81: 	    &Apache::loncommon::start_page('Already logged in');
                     82: 	my $end_page = 
                     83: 	    &Apache::loncommon::end_page();
                     84: 	$r->print(
                     85:                   $start_page
                     86:                  .'<h1>'.&mt('You are already logged in!').'</h1>'
1.2     ! gci        87:                  .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
1.1       gci        88:                   '<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>').'</p>'
                     89:                  .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
                     90:                  .$end_page
                     91:                  );
                     92:         return OK;
                     93:     }
                     94: 
                     95: # ---------------------------------------------------- No valid token, continue
                     96: 
                     97:  # ---------------------------- Not possible to really login to domain "public"
                     98:     if ($env{'form.domain'} eq 'public') {
                     99: 	$env{'form.domain'}='';
                    100: 	$env{'form.username'}='';
                    101:     }
                    102: # ----------------------------------------------------------- Process Interface
                    103:     $env{'form.interface'}=~s/\W//g;
                    104: 
                    105:     my $textbrowsers=$r->dir_config('lonTextBrowsers');
                    106:     my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
                    107:     
                    108:     foreach (split(/\:/,$textbrowsers)) {
                    109: 	if ($httpbrowser=~/$_/i) {
                    110: 	    $env{'form.interface'}='textual';
                    111:         }
                    112:     }
                    113: 
                    114:     my $fullgraph=($env{'form.interface'} ne 'textual');
                    115: 
                    116:     my $iconpath= 
                    117: 	&Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
                    118: 
                    119:     my $domain = &Apache::lonnet::default_login_domain();
                    120:     if (($env{'form.domain'}) && 
                    121: 	(&Apache::lonnet::domain($env{'form.domain'},'description'))) {
                    122: 	$domain=$env{'form.domain'};
                    123:     }
                    124:     my $role    = $r->dir_config('lonRole');
                    125:     my $loadlim = $r->dir_config('lonLoadLim');
                    126:     my $servadm = $r->dir_config('lonAdmEMail');
                    127:     my $lonhost = $r->dir_config('lonHostID');
                    128:     my $tabdir  = $r->dir_config('lonTabDir');
                    129:     my $include = $r->dir_config('lonIncludes');
                    130:     my $expire  = $r->dir_config('lonExpire');
                    131:     my $version = $r->dir_config('lonVersion');
                    132:     my $host_name = &Apache::lonnet::hostname($lonhost);
                    133: 
                    134: # --------------------------------------------- Default values for login fields
                    135: 
                    136:     my $authusername=($env{'form.username'}?$env{'form.username'}:'');
                    137:     my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
                    138: 
                    139: # ---------------------------------------------------------- Determine own load
                    140:     my $loadavg;
                    141:     {
                    142: 	my $loadfile=Apache::File->new('/proc/loadavg');
                    143: 	$loadavg=<$loadfile>;
                    144:     }
                    145:     $loadavg =~ s/\s.*//g;
                    146:     my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
                    147:     my $userloadpercent=&Apache::lonnet::userload();
                    148: 
                    149: # ------------------------------------------------------- Do the load balancing
                    150:     my $otherserver= &Apache::lonnet::absolute_url($host_name);
                    151:     my $firsturl=
                    152:     ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
                    153: # ---------------------------------------------------------- Are we overloaded?
                    154:     if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
                    155:         my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
                    156: 	if ($unloaded) { $otherserver=$unloaded; }
                    157:     }
                    158: 
                    159: # ----------------------------------------------------------- Get announcements
                    160:     my $announcements=&Apache::lonnet::getannounce();
                    161: # -------------------------------------------------------- Set login parameters
                    162: 
                    163:     my @hexstr=('0','1','2','3','4','5','6','7',
                    164:                 '8','9','a','b','c','d','e','f');
                    165:     my $lkey='';
                    166:     for (0..7) {
                    167:         $lkey.=$hexstr[rand(15)];
                    168:     }
                    169: 
                    170:     my $ukey='';
                    171:     for (0..7) {
                    172:         $ukey.=$hexstr[rand(15)];
                    173:     }
                    174: 
                    175:     my $lextkey=hex($lkey);
                    176:     if ($lextkey>2147483647) { $lextkey-=4294967296; }
                    177: 
                    178:     my $uextkey=hex($ukey);
                    179:     if ($uextkey>2147483647) { $uextkey-=4294967296; }
                    180: 
                    181: # -------------------------------------------------------- Store away log token
1.2     ! gci       182:     my $tokenextras;
        !           183:     if ($env{'form.role'}) {
        !           184:         $tokenextras = '&role='.&escape($env{'form.role'});
        !           185:     }
        !           186:     if ($env{'form.symb'}) {
        !           187:         if (!$tokenextras) {
        !           188:             $tokenextras = '&';
        !           189:         }
        !           190:         $tokenextras .= '&symb='.&escape($env{'form.symb'});
        !           191:     }
1.1       gci       192:     my $logtoken=Apache::lonnet::reply(
                    193:        'tmpput:'.$ukey.$lkey.'&'.$firsturl,
                    194:        $lonhost);
                    195: 
                    196: # ------------------- If we cannot talk to ourselves, we are in serious trouble
                    197: 
                    198:     if ($logtoken eq 'con_lost') {
                    199:         my $spares='';
                    200: 	my $last;
                    201:         foreach my $hostid (sort
                    202: 			    {
                    203: 				&Apache::lonnet::hostname($a) cmp
                    204: 				    &Apache::lonnet::hostname($b);
                    205: 			    }
                    206: 			    keys(%Apache::lonnet::spareid)) {
                    207:             next if ($hostid eq $lonhost);
                    208: 	    my $hostname = &Apache::lonnet::hostname($hostid);
                    209: 	    next if ($last eq $hostname);
                    210:             $spares.='<br /><font size="+1"><a href="http://'.
                    211:                 $hostname.
                    212:                 '/adm/login?domain='.$authdomain.'">'.
                    213:                 $hostname.'</a>'.
                    214:                 ' '.&mt('(preferred)').'</font>'.$/;
                    215: 	    $last=$hostname;
                    216:         }
                    217:         $spares.= '<br />';
                    218: 	my %all_hostnames = &Apache::lonnet::all_hostnames();
                    219:         foreach my $hostid (sort
                    220: 			    {
                    221: 				&Apache::lonnet::hostname($a) cmp
                    222: 				    &Apache::lonnet::hostname($b);
                    223: 			    }
                    224: 			    keys(%all_hostnames)) {
                    225:             next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
                    226: 	    my $hostname = &Apache::lonnet::hostname($hostid);
                    227:             next if ($last eq $hostname);
                    228:             $spares.='<br /><a href="http://'.
                    229:                 $hostname.
                    230:                 '/adm/login?domain='.$authdomain.'">'.
                    231:                 $hostname.'</a>';
                    232: 	    $last=$hostname;
                    233:         }
                    234: 	$r->print(
                    235:            '<html>'
                    236:           .'<head><title>'
                    237:           .&mt('The LearningOnline Network with CAPA')
                    238:           .'</title></head>'
                    239:           .'<body bgcolor="#FFFFFF">'
                    240:           .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
                    241:           .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
                    242:           .'<h3>'.&mt('The GCI WebCenter server is temporarily not available for login.').'</h3>'
                    243:           .'</body>'
                    244:           .'</html>'
                    245:         );
                    246:         return OK;
                    247:     }
                    248: 
                    249: # ----------------------------------------------- Apparently we are in business
                    250:     $servadm=~s/\,/\<br \/\>/g;
                    251: 
                    252: # ----------------------------------------------------------- Front page design
                    253:     my $pgbg=
                    254:       ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');
                    255:     my $font=
                    256:       ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');
                    257:     my $link=
                    258:       ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');
                    259:     my $vlink=
                    260:       ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');
                    261:     my $alink=&Apache::loncommon::designparm('login.alink',$domain);
                    262:     my $mainbg=
                    263:       ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');
                    264:     my $sidebg=
                    265:       ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');
                    266:     my $textcol = 
                    267:       ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');
                    268:     my $bgcol =
                    269:       ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');
                    270:     my $logo=&Apache::loncommon::designparm('login.logo',$domain);
                    271:     my $img=&Apache::loncommon::designparm('login.img',$domain);
                    272:     my $domainlogo=&Apache::loncommon::domainlogo($domain);
                    273:     my $login=&Apache::loncommon::designparm('login.login',$domain);
                    274:     if ($login eq '') {
                    275:         $login = $iconpath.'/'.&mt('userauthentication.gif');
                    276:     }
                    277:     my $showbanner = 1;
                    278:     my $showmainlogo = 1;
                    279:     if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
                    280:         $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
                    281:     }
                    282:     if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
                    283:         $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
                    284:     }
                    285:     my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
                    286:     my $showcoursecat =
                    287:         &Apache::loncommon::designparm('login.coursecatalog',$domain);
                    288:     my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);
                    289:     my $shownewuserlink = 
                    290:         &Apache::loncommon::designparm('login.newuser',$domain);
                    291:     my $now=time;
                    292:     my $js = (<<ENDSCRIPT);
                    293: 
1.2     ! gci       294:  <script type="text/javascript" language="JavaScript">
        !           295: // <![CDATA[
1.1       gci       296:     function send(caller)
                    297:     {
                    298: 
                    299:         if (caller == "newaccount") {
                    300:             this.document.signup.submit();
                    301:             return false;
                    302:         }
                    303:         if (document.client.uname.value == "" || !document.client.uname.value) {
                    304:             alert("You must provide a username ");
                    305:             return false;
                    306:         }
                    307:         if (document.client.upass$now.value == "" || !document.client.upass$now.value) {
                    308:             alert("You must provide a password");
                    309:             return false;
                    310:         }
                    311: 
                    312:         this.document.server.elements.uname.value
                    313:        =this.document.client.elements.uname.value;
                    314: 
                    315:         this.document.server.elements.udom.value
                    316:        =this.document.client.elements.udom.value;
                    317: 
                    318:         this.document.server.elements.imagesuppress.value
                    319:        =this.document.client.elements.imagesuppress.checked;
                    320: 
                    321:         this.document.server.elements.embedsuppress.value
                    322:        =this.document.client.elements.embedsuppress.checked;
                    323: 
                    324:         this.document.server.elements.appletsuppress.value
                    325:        =this.document.client.elements.appletsuppress.checked;
                    326: 
                    327:         this.document.server.elements.fontenhance.value
                    328:        =this.document.client.elements.fontenhance.checked;
                    329: 
                    330:         this.document.server.elements.blackwhite.value
                    331:        =this.document.client.elements.blackwhite.checked;
                    332: 
                    333:         this.document.server.elements.remember.value
                    334:        =this.document.client.elements.remember.checked;
                    335: 
                    336:         uextkey=this.document.client.elements.uextkey.value;
                    337:         lextkey=this.document.client.elements.lextkey.value;
                    338:         initkeys();
                    339: 
                    340:         this.document.server.elements.upass0.value
                    341:             =crypted(this.document.client.elements.upass$now.value.substr(0,15));
                    342:         this.document.server.elements.upass1.value
                    343:             =crypted(this.document.client.elements.upass$now.value.substr(15,15));
                    344:         this.document.server.elements.upass2.value
                    345:             =crypted(this.document.client.elements.upass$now.value.substr(30,15));
                    346: 
                    347:         this.document.client.elements.uname.value='';
                    348:         this.document.client.elements.upass$now.value='';
                    349: 
                    350:         this.document.server.submit();
                    351:         return false;
                    352:     }
                    353:  </script>
1.2     ! gci       354: // ]]>
1.1       gci       355: ENDSCRIPT
                    356: 
                    357: # --------------------------------------------------- Print login screen header
                    358: 
                    359:     my %add_entries = (topmargin    => "0",
                    360:                        leftmargin   => "0",
                    361:                        marginheight => "0",
                    362:                        marginwidth  => "0",
                    363:                        bgcolor      => "$pgbg",
                    364:                        text         => "$font",
                    365:                        link         => "$link",
                    366:                        vlink        => "$vlink",
                    367:                        alink        => "$alink",
                    368:                        onload       => "if ( document.client.uname ) { document.client.uname.focus(); }",
                    369:                        marginheight => "0",);
                    370: 
                    371:     $js .= "\n".'<link type="text/css" rel="stylesheet" href="/css/login.css">'."\n";
                    372:     $r->print(&Apache::loncommon::start_page('GCI WebCenter Login',$js,
                    373:                                        { 'redirect'       => [$expire,'/adm/roles'], 
                    374:                                          'add_entries' => \%add_entries,
                    375:                                          'only_body'   => 1,}));
                    376: 
                    377: # ----------------------------------------------------------------------- Texts
                    378: 
                    379: my %lt=&Apache::lonlocal::texthash(
                    380: 		  'un'  => 'Username',
                    381: 		  'pw'  => 'Password',
                    382: 		  'dom' => 'Domain',
                    383: 		  'load' => 'Server Load',
                    384:                   'userload' => 'User Load',
                    385:                   'about'  => 'About LON-CAPA',
                    386:                   'access' => 'Accessibility Options',
                    387:                   'catalog' => 'Course Catalog',
                    388: 		  'log' => 'Log in',
                    389: 		  'help' => 'Log-in Help',
                    390: 		  'serv' => 'Server',
                    391:                   'servadm' => 'Server Administration',
                    392:                   'helpdesk' => 'Contact Helpdesk',
                    393:                   'forgotpw' => 'Forgot password?',
                    394:                   'newuser'  => 'New User?',
                    395:                   'options_headline' => 'Select Accessibility Options',
                    396:                   'sprs_img' => 'Suppress rendering of images',
                    397:                   'sprs_applet' => 'Suppress Java applets',
                    398:                   'sprs_embed' => 'Suppress rendering of embedded multimedia',
                    399:                   'sprs_font' => 'Increase font size',
                    400:                   'sprs_blackwhite' => 'Switch to black and white mode',
                    401:                   'remember' => 'Remember these settings for next login',
                    402:                   'tbli'     => 'Text-based Interface Login');
                    403: # -------------------------------------------------- Change password field name
                    404:     my $forgotpw = &forgotpwdisplay(%lt);
                    405:     my $loginhelp = &loginhelpdisplay(%lt);
                    406: 
                    407: # ---------------------------------------------------- Serve out DES JavaScript
                    408:     {
                    409:         my $jsh=Apache::File->new($include."/londes.js");
                    410:         $r->print(<$jsh>);
                    411:     }
                    412: # ---------------------------------------------------------- Serve rest of page
                    413: 
                    414:     my $coursecatalog;
                    415:     if (($showcoursecat eq '') || ($showcoursecat)) {
                    416:         $coursecatalog = &coursecatalog_link($lt{'catalog'},$fullgraph);
                    417:     }
                    418:     my $newuserlink;
                    419:     if ($shownewuserlink) {
                    420:         $newuserlink = &newuser_link($lt{'newuser'});
                    421:     }
                    422:     if ($fullgraph) {
                    423:         $r->print(<<"END_OF_BLOCK2");
                    424: <br />
                    425: <div align="center">
                    426: <table class="LC_loginbox">
                    427:   <tr>
                    428:     <td align="left" valign="top" width="12">
                    429:      <img name="login_r1_c1" src="/images/login/lclogin_r1_c1.gif" width="12" height="10" border="0" alt="">
                    430:     </td>
                    431:     <td width="450" valign="top">
                    432:       <table class="LC_loginbox_left">
                    433:         <tr>
                    434:           <td width="411" align="left"><br /><img src="/images/login/gcilogo_smrnd.png" width="411" height="51" align="left"></td>
                    435:         </tr>
                    436:         <tr>
                    437:          <td>
                    438:           <div align="left" style="display:block; margin-top:5px; margin-bottom:5px; margin-left:0px; margin-right:0px; width:440px; height:5px;">
                    439:            <div style="display:block; background-color:#4C6C84; width:100%; height:5px; color:#000000; margin:0px;">
                    440:             </div>
                    441:           </div>
                    442:         </td>
                    443:        </tr>
                    444:       </table>
                    445:       <table class="LC_loginbox_left">
                    446:        <tr>
                    447:         <td height="10" colspan="4">&nbsp;</td>
                    448:        </tr>
                    449:        <tr>
                    450:         <td width="10">&nbsp;</td>
                    451:         <td valign="top" class="bodyblue" width="430" align="left">
                    452:          <span style="font-size: 18px; line-height: 22px; "><font style="font-size: 18px; line-height: 22px;"><br />New to the WebCenter?</font></span><br>
                    453:           <font class="bodyblue">The Geoscience Concept Inventory (GCI) <a href="http://gci.lite.msu.edu/">WebCenter</a> is a place to comment on existing concept questions and submit new ones.<br /><br />The WebCenter runs on <a href="http://loncapa.org/">LON-CAPA</a> - an open source freeware distributed learning content management and assessment system.</font><br /><br />
                    454:           <font class="bodyblue"><b>Create a GCI WebCenter ID</b> &#150; use your ID to submit comments or new content.  If you are already a GCI WebCenter user, please log-in.</font><br /><br /><br />
                    455:          <form name="signup" method="post" action="/adm/createaccount?courseid=gci_9615072b469884921gcil1"><input type="hidden" name="process" value="signup"/>
                    456:          <table class="LC_signup">
                    457:            <tr>
                    458:              <td align="left" valign="top" width="10" height="9"><img src="/images/login/lclogin_r2_c4.png" width="11" height="11" border="0" alt=""></td>
                    459:              <td>&nbsp;</td>
                    460:              <td align="right" valign="top" width="9" height="10"><img src="/images/login/lclogin_r2_c6.png" width="11 height="11" border="0" alt=""></td>
                    461:            </tr>
                    462:            <tr>
                    463:              <td align="center" valign="top" colspan="3">New to GCI WebCenter: <a href="javascript:send('newaccount')" style="color: #ffffff">Click here to sign up</a><br /></td>
                    464:            </tr>
                    465:            <tr>
                    466:              <td align="left" valign="bottom" width="10" height="10"><img src="/images/login/lclogin_r8_c4.png" width="11" height="11" border="0" alt=""></td>
                    467:              <td>&nbsp;</td>
                    468:              <td align="right" valign="bottom" width="9" height="10"><img src="/images/login/lclogin_r8_c6.png" width="11" height="11" border="0" alt=""></td>
                    469:            </tr>
                    470:          </table>
                    471:          </form>
                    472:         </td>
                    473:        </tr>
                    474:       </table>
                    475:      </td>
                    476:      <td width="10">&nbsp;</td>
                    477:      <td valign="top">
1.2     ! gci       478:       <form name="client" method="post" action="" onsubmit="return(send());">
1.1       gci       479:       <table class="LC_loginbox_right">
                    480:        <tr>
                    481:         <td colspan="3" height="23" class="LC_loginbox_strip">&nbsp;</td>
                    482:        </tr>
                    483:        <tr>
                    484:         <td align="left" valign="top" width="10" height="9"><img src="/images/login/lclogin_r2_c4.png" width="11" height="11" border="0" alt=""></td>
                    485:         <td>&nbsp;</td>
                    486:         <td align="right" valign="top" width="9" height="10"><img src="/images/login/lclogin_r2_c6.png" width="11 height="11" border="0" alt=""></td>
                    487:        </tr>
                    488:        <tr>
                    489:         <td width="10">&nbsp;</td>
                    490:         <td>
                    491:          <table border="0" cellspacing="0" cellpadding="0">
                    492:           <tr>
                    493:            <td align="right" class="bodywhite" height=50><br>
                    494:             <span style="font-size: 15px; line-height: 17px; font-weight: bold;">
                    495:              Existing WebCenter user?</span>
                    496:              <br />Please log-in.<br>
                    497:              <hr size=1 noshade color="#FFFFBB"><br /><br />
                    498:             </td>
                    499:            </tr>
                    500:            <tr>
                    501:             <td>
                    502:              <table border="0" cellpadding="2" cellspacing="0">
                    503:               <tr>
                    504:                <td align="right" class="bodywhite"><label for="uname">$lt{'un'}</label>:</td>
                    505:                <td align="right"><input type="text" name="uname" size="17" value="$authusername" /></td>
                    506:                </tr>
                    507:                <tr>
                    508:                 <td align="right" class="bodywhite"><label for="upass$now">$lt{'pw'}</label>:</td>
                    509:                 <td align="right"><input name="upass$now" size="17" value="" type="password"><input type="hidden" name="udom" value="gci" /></td>
                    510:                </tr>
                    511:                <tr><td>&nbsp;</td></tr>
                    512:                <tr>
                    513:                 <td colspan="2" align="right"><input name="signin" type="submit" value="Log-in" class=buttonwhite /></td>
                    514:                </tr>
                    515:               </table>
                    516:              </td>
                    517:             </tr>
                    518:             <tr>
                    519:              <td align="right" valign="top" class="bodywhite">
                    520:               <br />
                    521:               <br /><br />
                    522:               <hr size="1" noshade color="#FFFFBB" />
                    523:               <br />
                    524:               <a href="/adm/resetpw" style="color: #ffffff">Forgot your password?</a><br>
                    525:               <br />
                    526:              </td>
                    527:             </tr>
                    528:            </table>
                    529:           </td>
                    530:           <td width="9">&nbsp;</td>
                    531:         </tr>
                    532:         <tr>
                    533:           <td align="left" valign="bottom" width="10" height="10"><img src="/images/login/lclogin_r8_c4.png" width="11" height="11" border="0" alt=""></td>
                    534:           <td>&nbsp;</td>
                    535:           <td align="right" valign="bottom" width="9" height="10"><img src="/images/login/lclogin_r8_c6.png" width="11" height="11" border="0" alt=""></td>
                    536:         </tr>
                    537:         <tr>
                    538:           <td colspan="3" height="10" class="LC_loginbox_strip">&nbsp;</td>
                    539:         </tr>
                    540:       </table>
                    541:     </td>
                    542:     <td align="right" valign="top" width="10"><img src="/images/login/lclogin_r1_c7.gif" width="10" height="10" border="0" alt=""></td>
                    543:   </tr>
                    544:   <tr>
                    545:     <td colspan="4">
                    546:       <table border="0" cellspacing="0" cellpadding="0">
                    547:         <tr>
                    548:           <td width="10">&nbsp;</td>
                    549:        <td><font size="-1">
                    550:      <b>Note</b>:<br>
                    551:       If log-in fails, it may be because your browser is not accepting session cookies, or javascript is disabled. <a href="http://loncapa.msu.edu/student/cookies.html">Learn more</a>.
                    552:      </font>
                    553:          </td>
                    554:          <td width="10">&nbsp;</td>
                    555:        </tr>
                    556:      </table>
                    557:    </td>
                    558:   </tr>
                    559:   <tr>
                    560:     <td align="left" valign="bottom" width="12"><img src="/images/login/lclogin_r9_c1.gif" width="12" height="10" border="0" alt=""></td>
                    561:     <td colspan="3" width="698">&nbsp;</td>
                    562:     <td align="right" valign="bottom" width="10"><img src="/images/login/lclogin_r9_c7.gif" width="10" height="10" border="0" alt=""></td>
                    563:   </tr>
                    564: </table>
                    565: </div>
                    566: <p>&nbsp;</p>
                    567: <noscript><font size='3'>&nbsp;&nbsp;<b>Please Note:</b>
                    568:  Javascript must be enabled in your web browser in order to use this web site.
                    569:  </font></noscript>
                    570: <p>&nbsp;</p>
                    571: <input type="hidden" name="imagesuppress"  value="" />
                    572: <input type="hidden" name="embedsuppress"  value="" />
                    573: <input type="hidden" name="appletsuppress"  value="" />
                    574: <input type="hidden" name="fontenhance"  value="" />
                    575: <input type="hidden" name="blackwhite"  value="" />
                    576: <input type="hidden" name="remember"  value="" />
                    577: END_OF_BLOCK2
                    578:     } else {
                    579:         $r->print(<<ENDACCESSOPTIONS);
                    580: <h1>The Learning<i>Online</i> Network with CAPA</h1>
                    581: <h2>$lt{'tbli'}</h2>$announcements
                    582: <h3>$lt{'options_headline'}</h3>
1.2     ! gci       583: <form name="client" action="" onsubmit="return(send())">
1.1       gci       584: <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />
                    585: <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />
                    586: <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />
                    587: <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />
                    588: <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />
                    589: <br />
                    590: <input type="checkbox" name="remember" /> $lt{'remember'}
                    591: ENDACCESSOPTIONS
                    592:     }
                    593:     $r->print('
1.2     ! gci       594:      <input type="hidden" name="lextkey" value="'.$lextkey.'" />
        !           595:      <input type="hidden" name="uextkey" value="'.$uextkey.'" />
1.1       gci       596: ');
                    597:     unless ($fullgraph) {
                    598:         my $logintitle;
                    599:         if ($loginheader eq 'text') {
                    600:             $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2">&nbsp;&nbsp;&nbsp;<b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';
                    601:         } else {
                    602:             $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.
                    603:                           &mt('User Authentication').'" /></td>';
                    604:         }
                    605:         my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'
                    606:                              .'<noscript><div class="LC_warning"><font size="-1">'
                    607:                              .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
                    608:                             .'</font></div></noscript></td>';
                    609:         $r->print(<<ENDTEXTUAL);
                    610:      <hr />
1.2     ! gci       611:      <table border=0 cellspacing="0" cellpadding="0">
1.1       gci       612:       <tr>$logintitle</tr>
                    613:       <tr>$noscript_warning</tr>
                    614:       <tr>
                    615:        <td bgcolor="$mainbg"><br /><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="uname">$lt{'un'}</label>:</b></font></td>
                    616:        <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>
                    617:       </tr>
                    618:       <tr>
                    619:        <td bgcolor="$mainbg"><font size=-1><b>&nbsp;&nbsp;&nbsp;<label for="upass$now">$lt{'pw'}</label>:</b></font></td>
                    620:        <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>
                    621:       </tr>
                    622:       <tr>
                    623:        <td bgcolor="$mainbg">&nbsp;</td>
                    624:        <td bgcolor="$mainbg" valign="bottom" align="center">
                    625:         <br />
                    626:         <input type="submit" value="$lt{'log'}" />
                    627:         <input type="hidden" name="udom" value="'gci'" />
                    628:        </td>
                    629:       </tr>
                    630:       <tr>
                    631:        <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">
                    632:         $loginhelp
                    633:         $forgotpw
                    634:         $newuserlink
                    635:         $coursecatalog
                    636:         <br />
                    637:        </td>
                    638:       </tr>
                    639:      </table>
                    640: ENDTEXTUAL
                    641:     }
                    642:     $r->print(<<"ENDLOGIN");
                    643:   </form>
                    644:   <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
                    645:    <input type="hidden" name="logtoken" value="$logtoken" />
                    646:    <input type="hidden" name="serverid" value="$lonhost" />
                    647:    <input type="hidden" name="interface" value="$env{'form.interface'}" />
                    648:    <input type="hidden" name="uname" value="" />
                    649:    <input type="hidden" name="upass0" value="" />
                    650:    <input type="hidden" name="upass1" value="" />
                    651:    <input type="hidden" name="upass2" value="" />
                    652:    <input type="hidden" name="udom" value="" />
                    653:    <input type="hidden" name="imagesuppress"  value="" />
                    654:    <input type="hidden" name="appletsuppress"  value="" />
                    655:    <input type="hidden" name="embedsuppress"  value="" />
                    656:    <input type="hidden" name="fontenhance"  value="" />
                    657:    <input type="hidden" name="blackwhite"  value="" />
                    658:    <input type="hidden" name="remember"  value="" />
                    659:    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
                    660:    <input type="hidden" name="localres" value="$env{'form.localres'}" />
                    661:   </form>
                    662: ENDLOGIN
                    663:     if ($fullgraph) {
                    664:         my $helpdeskscript;
                    665:         my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
                    666:                                   $version,$authdomain,\$helpdeskscript);
                    667:     }
                    668:     my %endargs = ( 'noredirectlink' => 1, );
                    669:     $r->print(&Apache::loncommon::end_page(\%endargs));
                    670:     return OK;
                    671: }
                    672: 
                    673: sub contactdisplay {
                    674:     my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;
                    675:     my $contactblock;
                    676:     my $showhelpdesk = 0;
                    677:     my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
                    678:     if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {
                    679:         $showhelpdesk = 1;
                    680:     }
                    681:     if ($servadm && $showadminmail) {
                    682:         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;'.$$lt{'servadm'}.':</b><br />'.
                    683:                          '<tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$servadm.'</tt><br />&nbsp;<br />';
                    684:     }
                    685:     if ($showhelpdesk) {
                    686:         $contactblock .= '<b>&nbsp;&nbsp;&nbsp;<a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';
                    687:         my $thisurl = &escape('/adm/login');
                    688:         $$helpdeskscript = <<"ENDSCRIPT";
                    689: <script type="text/javascript">
1.2     ! gci       690: // <![CDATA[
1.1       gci       691: function helpdesk() {
                    692:     var codedom = document.client.udom.value;
                    693:     if (codedom == '') {
                    694:         codedom = "$authdomain";
                    695:     }
                    696:     var querystr = "origurl=$thisurl&codedom="+codedom;
                    697:     document.location.href = "/adm/helpdesk?"+querystr;
                    698:     return;
                    699: }
1.2     ! gci       700: // ]]>
1.1       gci       701: </script>
                    702: ENDSCRIPT
                    703:     }
                    704:     $contactblock .= <<"ENDBLOCK";
                    705:      &nbsp;&nbsp;&nbsp;$version
                    706: ENDBLOCK
                    707:     return $contactblock;
                    708: }
                    709: 
                    710: sub forgotpwdisplay {
                    711:     my (%lt) = @_;
                    712:     my $prompt_for_resetpw = 1; 
                    713:     if ($prompt_for_resetpw) {
                    714:         return '<br />&nbsp;&nbsp;&nbsp;<a href="/adm/resetpw"><b>'.$lt{'forgotpw'}.'</b></a><br />';
                    715:     }
                    716:     return;
                    717: }
                    718: 
                    719: sub loginhelpdisplay {
                    720:     my (%lt) = @_;
                    721:     my $login_help = 1;
                    722:     if ($login_help) {
                    723:         return '&nbsp;&nbsp;&nbsp;<a href="/adm/loginproblems.html"><b>'.$lt{'help'}.'</b></a>';
                    724:     }
                    725:     return;
                    726: }
                    727: 
                    728: sub coursecatalog_link {
                    729:     my ($linkname,$fullgraph) = @_;
                    730:     my $link = '/adm/coursecatalog';
                    731:     if (!$fullgraph) {
                    732:         $link.= '?interface=textual';
                    733:     }
                    734:     return '&nbsp;&nbsp;&nbsp;<a href="/adm/coursecatalog"><b>'.$linkname.'</b></a><br />';
                    735: END
                    736: }
                    737: 
                    738: sub newuser_link {
                    739:     my ($linkname) = @_;
                    740:     return '&nbsp;&nbsp;&nbsp;<a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';
                    741: }
                    742: 
                    743: 1;
                    744: __END__

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