loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.74: download - view: text, annotated - select for diffs
Wed Apr 5 22:39:55 2006 UTC (18 years, 2 months ago) by albertel
Branches: MAIN
CVS tags: HEAD

- start_page

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.74 2006/04/05 22:39:55 albertel Exp $ 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 CGI::Cookie(); 34: use Apache::File (); 35: use Apache::lonnet; 36: use Apache::loncommon(); 37: use Apache::lonauth(); 38: use Apache::lonlocal; 39: use Apache::migrateuser(); 40: 41: sub handler { 42: my $r = shift; 43: 44: &Apache::loncommon::get_unprocessed_cgi 45: ($ENV{'QUERY_STRING'}.'&'.$env{'request.querystring'}, 46: ['interface','username','domain','firsturl','localpath','localres', 47: 'token']); 48: 49: # -- check if they are a migrating user 50: if (defined($env{'form.token'})) { 51: return &Apache::migrateuser::handler($r); 52: } 53: 54: &Apache::loncommon::no_cache($r); 55: &Apache::lonlocal::get_language_handle($r); 56: &Apache::loncommon::content_type($r,'text/html'); 57: $r->send_http_header; 58: return OK if $r->header_only; 59: 60: 61: # Are we re-routing? 62: if (-e '/home/httpd/html/lon-status/reroute.txt') { 63: &Apache::lonauth::reroute($r); 64: return OK; 65: } 66: 67: 68: # -------------------------------- Prevent users from attempting to login twice 69: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 70: my $lonid=$cookies{'lonID'}; 71: my $cookie; 72: if ($lonid) { 73: my $handle=$lonid->value; 74: $handle=~s/\W//g; 75: my $lonidsdir=$r->dir_config('lonIDsDir'); 76: if (-e "$lonidsdir/$handle.id") { 77: # Is there an existing token file? 78: if ($handle=~/^publicuser\_/) { 79: # For "public user" - remove it, we apparently really want to login 80: unlink("$lonidsdir/$handle.id"); 81: } elsif ($handle ne '') { 82: # Indeed, a valid token is found 83: my $start_page = 84: &Apache::loncommon::start_page('Already logged in'); 85: my $end_page = 86: &Apache::loncommon::end_page(); 87: $r->print(<<ENDFAILED); 88: $start_page 89: <h1>You are already logged in</h1> 90: <p>Please either <a href="/adm/roles">continue the current session</a> or 91: <a href="/adm/logout">logout</a>.</p> 92: <p> 93: <a href="/adm/loginproblems.html">Problems?</a></p> 94: $end_page 95: ENDFAILED 96: return OK; 97: } 98: } 99: } 100: 101: # ---------------------------------------------------- No valid token, continue 102: 103: # ---------------------------- Not possible to really login to domain "public" 104: if ($env{'form.domain'} eq 'public') { 105: $env{'form.domain'}=''; 106: $env{'form.username'}=''; 107: } 108: # ----------------------------------------------------------- Process Interface 109: $env{'form.interface'}=~s/\W//g; 110: 111: my $textbrowsers=$r->dir_config('lonTextBrowsers'); 112: my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; 113: 114: foreach (split(/\:/,$textbrowsers)) { 115: if ($httpbrowser=~/$_/i) { 116: $env{'form.interface'}='textual'; 117: } 118: } 119: 120: my $fullgraph=($env{'form.interface'} ne 'textual'); 121: my $port_to_use=$r->dir_config('lonhttpdPort'); 122: if (!defined($port_to_use)) { 123: $port_to_use='8080'; 124: } 125: my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use. 126: $r->dir_config('lonIconsURL'); 127: my $domain = $r->dir_config('lonDefDomain'); 128: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0]; 129: foreach my $posdom (&Apache::lonnet::current_machine_domains()) { 130: if (lc($posdom) eq lc($testdomain)) { $domain=$posdom; } 131: } 132: if (($env{'form.domain'}) && 133: ($Apache::lonnet::domaindescription{$env{'form.domain'}})) { 134: $domain=$env{'form.domain'}; 135: } 136: my $role = $r->dir_config('lonRole'); 137: my $loadlim = $r->dir_config('lonLoadLim'); 138: my $servadm = $r->dir_config('lonAdmEMail'); 139: my $sysadm = $r->dir_config('lonSysEMail'); 140: my $lonhost = $r->dir_config('lonHostID'); 141: my $tabdir = $r->dir_config('lonTabDir'); 142: my $include = $r->dir_config('lonIncludes'); 143: my $expire = $r->dir_config('lonExpire'); 144: my $version = $r->dir_config('lonVersion'); 145: 146: # --------------------------------------------- Default values for login fields 147: 148: my $authusername=($env{'form.username'}?$env{'form.username'}:''); 149: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 150: 151: # ---------------------------------------------------------- Determine own load 152: my $loadavg; 153: { 154: my $loadfile=Apache::File->new('/proc/loadavg'); 155: $loadavg=<$loadfile>; 156: } 157: $loadavg =~ s/\s.*//g; 158: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 159: my $userloadpercent=&Apache::lonnet::userload(); 160: 161: # ------------------------------------------------------- Do the load balancing 162: my $otherserver='http://'.$ENV{'SERVER_NAME'}; 163: my $firsturl= 164: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 165: # ---------------------------------------- Are we access server and overloaded? 166: if (($role eq 'access') && 167: (($userloadpercent>100.0)||($loadpercent>100.0))) { 168: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent); 169: if ($unloaded) { $otherserver=$unloaded; } 170: } 171: 172: # ----------------------------------------------------------- Get announcements 173: my $announcements=&Apache::lonnet::getannounce(); 174: # -------------------------------------------------------- Set login parameters 175: 176: my @hexstr=('0','1','2','3','4','5','6','7', 177: '8','9','a','b','c','d','e','f'); 178: my $lkey=''; 179: for (0..7) { 180: $lkey.=$hexstr[rand(15)]; 181: } 182: 183: my $ukey=''; 184: for (0..7) { 185: $ukey.=$hexstr[rand(15)]; 186: } 187: 188: my $lextkey=hex($lkey); 189: if ($lextkey>2147483647) { $lextkey-=4294967296; } 190: 191: my $uextkey=hex($ukey); 192: if ($uextkey>2147483647) { $uextkey-=4294967296; } 193: 194: # -------------------------------------------------------- Store away log token 195: my $logtoken=Apache::lonnet::reply( 196: 'tmpput:'.$ukey.$lkey.'&'.$firsturl, 197: $lonhost); 198: 199: # ------------------- If we cannot talk to ourselves, we are in serious trouble 200: 201: if ($logtoken eq 'con_lost') { 202: my $spares=''; 203: my $last; 204: foreach my $hostid (sort 205: { 206: $Apache::lonnet::hostname{$a} cmp 207: $Apache::lonnet::hostname{$b}; 208: } 209: keys(%Apache::lonnet::spareid)) { 210: next if ($hostid eq $lonhost); 211: next if ($last eq $Apache::lonnet::hostname{$hostid}); 212: $spares.='<br /><font size="+1"><a href="http://'. 213: $Apache::lonnet::hostname{$hostid}. 214: '/adm/login?domain='.$authdomain.'">'. 215: $Apache::lonnet::hostname{$hostid}.'</a>'. 216: ' (preferred)</font>'.$/; 217: $last=$Apache::lonnet::hostname{$hostid}; 218: } 219: $spares.= '<br />'; 220: foreach my $hostid (sort 221: { 222: $Apache::lonnet::hostname{$a} cmp 223: $Apache::lonnet::hostname{$b}; 224: } 225: keys(%Apache::lonnet::hostname)) { 226: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 227: next if ($last eq $Apache::lonnet::hostname{$hostid}); 228: $spares.='<br /><a href="http://'. 229: $Apache::lonnet::hostname{$hostid}. 230: '/adm/login?domain='.$authdomain.'">'. 231: $Apache::lonnet::hostname{$hostid}.'</a>'; 232: $last=$Apache::lonnet::hostname{$hostid}; 233: } 234: $r->print(<<ENDTROUBLE); 235: <html> 236: <head><title>The LearningOnline Network with CAPA</title></head> 237: <body bgcolor="#FFFFFF"> 238: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" /> 239: <h3>This LON-CAPA server is temporarily not available for login</h3> 240: <p>Please attempt to login to one of the following servers:</p>$spares 241: <p>If the problem persists, please contact <tt>$servadm</tt>.</p> 242: </body> 243: </html> 244: ENDTROUBLE 245: return OK; 246: } 247: 248: # ----------------------------------------------- Apparently we are in business 249: 250: my $domainlogo=&Apache::loncommon::domainlogo($domain); 251: $servadm=~s/\,/\<br \/\>/g; 252: $sysadm=~s/\,/\<br \/\>/g; 253: 254: # --------------------------------------------------- Print login screen header 255: $r->print(<<ENDHEADER); 256: <html> 257: <head> 258: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" /> 259: <title>The LearningOnline Network with CAPA Login</title> 260: </head> 261: ENDHEADER 262: # ---------------------------------------------------- Serve out DES JavaScript 263: { 264: my $jsh=Apache::File->new($include."/londes.js"); 265: $r->print(<$jsh>); 266: } 267: 268: # ----------------------------------------------------------- Front page design 269: my $pgbg= 270: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF'); 271: my $font= 272: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000'); 273: my $link= 274: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF'); 275: my $vlink= 276: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF'); 277: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 278: my $mainbg= 279: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF'); 280: my $sidebg= 281: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF'); 282: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 283: my $img=&Apache::loncommon::designparm('login.img',$domain); 284: 285: # ----------------------------------------------------------------------- Texts 286: 287: my %lt=&Apache::lonlocal::texthash( 288: 'un' => 'Username', 289: 'pw' => 'Password', 290: 'dom' => 'Domain', 291: 'perc' => 'percent', 292: 'load' => 'Load', 293: 'userload' => 'User Load', 294: 'about' => 'aboutlon.gif', 295: 'access' => 'accessbutton.gif', 296: 'auth' => 'userauthentication.gif', 297: 'log' => 'Log in', 298: 'help' => 'Help', 299: 'serv' => 'Server', 300: 'servadm' => 'Server Administration', 301: 'sysadm' => 'System Administration', 302: 'helpdesk' => 'Contact Helpdesk'); 303: # -------------------------------------------------- Change password field name 304: my $now=time; 305: # ---------------------------------------------------------- Serve rest of page 306: $r->print(<<ENDSCRIPT); 307: 308: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink" 309: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0> 310: 311: <script language="JavaScript"> 312: function send() 313: { 314: this.document.server.elements.uname.value 315: =this.document.client.elements.uname.value; 316: 317: this.document.server.elements.udom.value 318: =this.document.client.elements.udom.value; 319: 320: this.document.server.elements.imagesuppress.value 321: =this.document.client.elements.imagesuppress.checked; 322: 323: this.document.server.elements.embedsuppress.value 324: =this.document.client.elements.embedsuppress.checked; 325: 326: this.document.server.elements.appletsuppress.value 327: =this.document.client.elements.appletsuppress.checked; 328: 329: this.document.server.elements.fontenhance.value 330: =this.document.client.elements.fontenhance.checked; 331: 332: this.document.server.elements.blackwhite.value 333: =this.document.client.elements.blackwhite.checked; 334: 335: this.document.server.elements.remember.value 336: =this.document.client.elements.remember.checked; 337: 338: uextkey=this.document.client.elements.uextkey.value; 339: lextkey=this.document.client.elements.lextkey.value; 340: initkeys(); 341: 342: this.document.server.elements.upass0.value 343: =crypted(this.document.client.elements.upass$now.value.substr(0,15)); 344: this.document.server.elements.upass1.value 345: =crypted(this.document.client.elements.upass$now.value.substr(15,15)); 346: this.document.server.elements.upass2.value 347: =crypted(this.document.client.elements.upass$now.value.substr(30,15)); 348: 349: this.document.client.elements.uname.value=''; 350: this.document.client.elements.upass$now.value=''; 351: 352: this.document.server.submit(); 353: return false; 354: } 355: </script> 356: ENDSCRIPT 357: 358: if ($fullgraph) { 359: $r->print( 360: '<table width="100%" cellpadding=0 cellspacing=0 border=0>'); 361: } 362: 363: $r->print(<<ENDSERVERFORM); 364: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top"> 365: <input type="hidden" name="logtoken" value="$logtoken" /> 366: <input type="hidden" name="serverid" value="$lonhost" /> 367: <input type="hidden" name="interface" value="$env{'form.interface'}" /> 368: <input type="hidden" name="uname" value="" /> 369: <input type="hidden" name="upass0" value="" /> 370: <input type="hidden" name="upass1" value="" /> 371: <input type="hidden" name="upass2" value="" /> 372: <input type="hidden" name="udom" value="" /> 373: <input type="hidden" name="imagesuppress" value="" /> 374: <input type="hidden" name="appletsuppress" value="" /> 375: <input type="hidden" name="embedsuppress" value="" /> 376: <input type="hidden" name="fontenhance" value="" /> 377: <input type="hidden" name="blackwhite" value="" /> 378: <input type="hidden" name="remember" value="" /> 379: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 380: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 381: </form> 382: ENDSERVERFORM 383: if ($fullgraph) { $r->print(<<ENDTOP); 384:  385: <tr> 386: 387:  388: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td> 389: </tr> 390: 391:  392: <tr> 393: 394:  395: <td width=182 height=27 bgcolor="$sidebg"> </td> 396: 397:  398: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td> 399: 400:  401: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td> 402: 403:  404: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td> 405: </tr> 406: <tr> 407: 408:  409:  410: <td valign="top" height=60 align="center" bgcolor="$sidebg"> 411: <a href="/adm/login?interface=textual"><img src="$iconpath/$lt{'access'}" border=0 alt="Accessibility Options" /></a> 412: <br /> 413: <a href="/adm/about.html"><img src="$iconpath/$lt{'about'}" border=0 alt="About LON-CAPA" /></a> 414: </td> 415: 416:  417:  418: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 419: 420:  421:  422: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg"> 423: <center> 424: <img src="$logo" alt="" /> 425: </center> 426: </td> 427: 428:  429: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 430: </tr> 431: <tr> 432: 433:  434:  435: <td align="center" valign="middle" bgcolor="$sidebg"> 436: ENDTOP 437: } else { 438: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements); 439: } 440: $r->print('<form name="client" onsubmit="return(send())">'); 441: unless ($fullgraph) { 442: $r->print(<<ENDACCESSOPTIONS); 443: <h3>Select Accessibility Options</h3> 444: <label><input type="checkbox" name="imagesuppress" /> Suppress rendering of images</label><br /> 445: <label><input type="checkbox" name="appletsuppress" /> Suppress Java applets</label><br /> 446: <label><input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia</label><br /> 447: <label><input type="checkbox" name="fontenhance" /> Increase font size</label><br /> 448: <label><input type="checkbox" name="blackwhite" /> Switch to black and white mode</label><br /> 449: <p>If you have accessibility needs that are not addressed by this interface, 450: please 451: contact the system administrator at <tt>$sysadm</tt>.</p><br /> 452: <input type="checkbox" name="remember" /> Remember these settings for next login<hr /> 453: ENDACCESSOPTIONS 454: } else { 455: $r->print(<<ENDNOOPT); 456: <input type="hidden" name="imagesuppress" value="" /> 457: <input type="hidden" name="embedsuppress" value="" /> 458: <input type="hidden" name="appletsuppress" value="" /> 459: <input type="hidden" name="fontenhance" value="" /> 460: <input type="hidden" name="blackwhite" value="" /> 461: <input type="hidden" name="remember" value="" /> 462: ENDNOOPT 463: } 464: $r->print(<<ENDLOGIN); 465: <input type="hidden" name="lextkey" value="$lextkey"> 466: <input type="hidden" name="uextkey" value="$uextkey"> 467: 468:  469: <table border=0 cellspacing=0 cellpadding=0> 470: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/$lt{'auth'}" alt="User Authentication" /></td></tr> 471: <tr> 472: <td bgcolor="$mainbg"><br /><font size=-1><b>   $lt{'un'}:</b></font></td> 473: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td> 474: </tr> 475: <tr> 476: <td bgcolor="$mainbg"><font size=-1><b>   $lt{'pw'}:</b></font></td> 477: <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td> 478: </tr> 479: <tr> 480: <td bgcolor="$mainbg"><font size=-1><b>   $lt{'dom'}:</b></font></td> 481: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td> 482: </tr> 483: <tr> 484: <td bgcolor="$mainbg">   <a href="/adm/loginproblems.html">$lt{'help'}</a></td> 485: <td bgcolor="$mainbg" valign="bottom" align="center"> 486: <br /> 487: <input type="submit" value="$lt{'log'}" /> 488: </td> 489: </tr> 490: </table> 491:  492: </form> 493: ENDLOGIN 494: if ($fullgraph) { 495: my $helpdeskscript; 496: my $contactblock = &contactdisplay(\%lt,$sysadm,$servadm,$version,$authdomain,\$helpdeskscript); 497: $r->print(<<ENDDOCUMENT); 498: </td> 499: 500:  501: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 502: 503:  504: <td bgcolor="$mainbg">$announcements</td> 505: 506:  507: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 508: </tr> 509: <tr> 510: 511:  512: <td bgcolor="$sidebg" valign="middle" align="left"> 513: <br /> 514: <table border=0 cellspacing=0 cellpadding=0> 515: <tr> 516: <td bgcolor="$sidebg" align="left" valign="top"> 517: <small><b>   $lt{'dom'}: </b></small> 518: </td> 519: <td bgcolor="$sidebg" align="left" valign="top"> 520: <small><tt> $domain</tt></small> 521: </td> 522: </tr> 523: <tr> 524: <td bgcolor="$sidebg" align="left" valign="top"> 525: <small><b>   $lt{'serv'}: </b></small> 526: </td> 527: <td bgcolor="$sidebg" align="left" valign="top"> 528: <small><tt> $lonhost ($role)</tt></small> 529: </td> 530: </tr> 531: <tr> 532: <td bgcolor="$sidebg" align="left" valign="top"> 533: <small><b>   $lt{'load'}: </b></small> 534: </td> 535: <td bgcolor="$sidebg" align="left" valign="top"> 536: <small><tt> $loadpercent $lt{'perc'}</tt></small> 537: </td> 538: </tr> 539: <tr> 540: <td bgcolor="$sidebg" align="left" valign="top"> 541: <small><b>   $lt{'userload'}: </b></small> 542: </td> 543: <td bgcolor="$sidebg" align="left" valign="top"> 544: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 545: </td> 546: </tr> 547: </table> 548: <br /> 549: $contactblock 550: </td> 551: 552:  553: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 554: 555:  556: <td width="100%" valign="bottom" bgcolor="$mainbg"> 557: $domainlogo 558: </td> 559: 560:  561: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 562: </tr> 563: <tr> 564: 565:  566: <td bgcolor="$sidebg"> </td> 567: 568:  569: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td> 570: 571:  572: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td> 573: 574:  575: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td> 576: </tr> 577: </table> 578: 579: <script type="text/javascript"> 580: // the if prevents the script error if the browser can not handle this 581: if ( document.client.uname ) { document.client.uname.focus(); } 582: </script> 583: $helpdeskscript 584: 585: ENDDOCUMENT 586: } 587: $r->print('</body></html>'); 588: return OK; 589: } 590: 591: sub contactdisplay { 592: my ($lt,$sysadm,$servadm,$version,$authdomain,$helpdeskscript) = @_; 593: my $contactblock; 594: my $showsysadm = 1; 595: my $showservadm = 1; 596: my $showhelpdesk = 0; 597: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 598: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { 599: $showhelpdesk = 1; 600: } 601: if ($showsysadm) { 602: $contactblock .= '<b>   '.$$lt{'sysadm'}.':</b><br />'. 603: '<tt>      '.$sysadm.'</tt><br />'; 604: } 605: if ($showservadm) { 606: $contactblock .= '<b>   '.$$lt{'servadm'}.':</b><br />'. 607: '<tt>      '.$servadm.'</tt><br /> <br />'; 608: } 609: if ($showhelpdesk) { 610: $contactblock .= '<b>   <a href="javascript:helpdesk()">'.$$lt{'helpdesk'}.'</a></b><br />'; 611: my $thisurl = &Apache::lonnet::escape('/adm/login'); 612: $$helpdeskscript = <<"ENDSCRIPT"; 613: <script type="text/javascript"> 614: function helpdesk() { 615: var codedom = document.client.udom.value; 616: if (codedom == '') { 617: codedom = "$authdomain"; 618: } 619: var querystr = "origurl=$thisurl&codedom="+codedom; 620: document.location.href = "/adm/helpdesk?"+querystr; 621: return; 622: } 623: </script> 624: ENDSCRIPT 625: } 626: $contactblock .= <<"ENDBLOCK"; 627:    $version 628: ENDBLOCK 629: return $contactblock; 630: } 631: 632: 633: 1; 634: __END__