loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.70: download - view: text, annotated - select for diffs
Wed Nov 23 20:58:31 2005 UTC (18 years, 6 months ago) by www
Branches: MAIN
CVS tags: version_2_0_99_1, HEAD

More sticky than I thought.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.70 2005/11/23 20:58:31 www 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: 40: sub handler { 41: my $r = shift; 42: &Apache::loncommon::no_cache($r); 43: &Apache::lonlocal::get_language_handle($r); 44: &Apache::loncommon::content_type($r,'text/html'); 45: $r->send_http_header; 46: return OK if $r->header_only; 47: 48: 49: # Are we re-routing? 50: if (-e '/home/httpd/html/lon-status/reroute.txt') { 51: &Apache::lonauth::reroute($r); 52: return OK; 53: } 54: 55: # -------------------------------- Prevent users from attempting to login twice 56: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 57: my $lonid=$cookies{'lonID'}; 58: my $cookie; 59: if ($lonid) { 60: my $handle=$lonid->value; 61: $handle=~s/\W//g; 62: my $lonidsdir=$r->dir_config('lonIDsDir'); 63: if (-e "$lonidsdir/$handle.id") { 64: # Is there an existing token file? 65: if ($handle=~/^publicuser\_/) { 66: # For "public user" - remove it, we apparently really want to login 67: unlink("$lonidsdir/$handle.id"); 68: } elsif ($handle ne '') { 69: # Indeed, a valid token is found 70: my $bodytag=&Apache::loncommon::bodytag('Already logged in'); 71: $r->print(<<ENDFAILED); 72: <html> 73: <head> 74: <title>Already logged in</title> 75: </head> 76: $bodytag 77: <h1>You are already logged in</h1> 78: <p>Please either <a href="/adm/roles">continue the current session</a> or 79: <a href="/adm/logout">logout</a>.</p> 80: <p> 81: <a href="/adm/loginproblems.html">Problems?</a></p> 82: </body> 83: </html> 84: ENDFAILED 85: return OK; 86: } 87: } 88: } 89: 90: # ---------------------------------------------------- No valid token, continue 91: 92: &Apache::loncommon::get_unprocessed_cgi 93: ($ENV{'QUERY_STRING'}.'&'.$env{'request.querystring'}, 94: ['interface','username','domain','firsturl','localpath','localres']); 95: 96: # ---------------------------- Not possible to really login to domain "public" 97: if ($env{'form.domain'} eq 'public') { 98: $env{'form.domain'}=''; 99: $env{'form.username'}=''; 100: } 101: # ----------------------------------------------------------- Process Interface 102: $env{'form.interface'}=~s/\W//g; 103: 104: my $textbrowsers=$r->dir_config('lonTextBrowsers'); 105: my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; 106: 107: foreach (split(/\:/,$textbrowsers)) { 108: if ($httpbrowser=~/$_/i) { 109: $env{'form.interface'}='textual'; 110: } 111: } 112: 113: my $fullgraph=($env{'form.interface'} ne 'textual'); 114: my $port_to_use=$r->dir_config('lonhttpdPort'); 115: if (!defined($port_to_use)) { 116: $port_to_use='8080'; 117: } 118: my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use. 119: $r->dir_config('lonIconsURL'); 120: my $domain = $r->dir_config('lonDefDomain'); 121: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0]; 122: foreach my $posdom (&Apache::lonnet::current_machine_domains()) { 123: if ($posdom eq $testdomain) { $domain=$testdomain; } 124: } 125: if (($env{'form.domain'}) && 126: ($Apache::lonnet::domaindescription{$env{'form.domain'}})) { 127: $domain=$env{'form.domain'}; 128: } 129: my $role = $r->dir_config('lonRole'); 130: my $loadlim = $r->dir_config('lonLoadLim'); 131: my $servadm = $r->dir_config('lonAdmEMail'); 132: my $sysadm = $r->dir_config('lonSysEMail'); 133: my $lonhost = $r->dir_config('lonHostID'); 134: my $tabdir = $r->dir_config('lonTabDir'); 135: my $include = $r->dir_config('lonIncludes'); 136: my $expire = $r->dir_config('lonExpire'); 137: my $version = $r->dir_config('lonVersion'); 138: 139: # --------------------------------------------- Default values for login fields 140: 141: my $authusername=($env{'form.username'}?$env{'form.username'}:''); 142: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 143: 144: # ---------------------------------------------------------- Determine own load 145: my $loadavg; 146: { 147: my $loadfile=Apache::File->new('/proc/loadavg'); 148: $loadavg=<$loadfile>; 149: } 150: $loadavg =~ s/\s.*//g; 151: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 152: my $userloadpercent=&Apache::lonnet::userload(); 153: 154: # ------------------------------------------------------- Do the load balancing 155: my $otherserver='http://'.$ENV{'SERVER_NAME'}; 156: my $firsturl= 157: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 158: # ---------------------------------------- Are we access server and overloaded? 159: if (($role eq 'access') && 160: (($userloadpercent>100.0)||($loadpercent>100.0))) { 161: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent); 162: if ($unloaded) { $otherserver=$unloaded; } 163: } 164: 165: # ----------------------------------------------------------- Get announcements 166: my $announcements=&Apache::lonnet::getannounce(); 167: # -------------------------------------------------------- Set login parameters 168: 169: my @hexstr=('0','1','2','3','4','5','6','7', 170: '8','9','a','b','c','d','e','f'); 171: my $lkey=''; 172: for (0..7) { 173: $lkey.=$hexstr[rand(15)]; 174: } 175: 176: my $ukey=''; 177: for (0..7) { 178: $ukey.=$hexstr[rand(15)]; 179: } 180: 181: my $lextkey=hex($lkey); 182: if ($lextkey>2147483647) { $lextkey-=4294967296; } 183: 184: my $uextkey=hex($ukey); 185: if ($uextkey>2147483647) { $uextkey-=4294967296; } 186: 187: # -------------------------------------------------------- Store away log token 188: my $logtoken=Apache::lonnet::reply( 189: 'tmpput:'.$ukey.$lkey.'&'.$firsturl, 190: $lonhost); 191: 192: # ------------------- If we cannot talk to ourselves, we are in serious trouble 193: 194: if ($logtoken eq 'con_lost') { 195: my $spares=''; 196: my $last; 197: foreach my $hostid (sort 198: { 199: $Apache::lonnet::hostname{$a} cmp 200: $Apache::lonnet::hostname{$b}; 201: } 202: keys(%Apache::lonnet::spareid)) { 203: next if ($hostid eq $lonhost); 204: next if ($last eq $Apache::lonnet::hostname{$hostid}); 205: $spares.='<br /><font size="+1"><a href="http://'. 206: $Apache::lonnet::hostname{$hostid}. 207: '/adm/login?domain='.$authdomain.'">'. 208: $Apache::lonnet::hostname{$hostid}.'</a>'. 209: ' (preferred)</font>'.$/; 210: $last=$Apache::lonnet::hostname{$hostid}; 211: } 212: $spares.= '<br />'; 213: foreach my $hostid (sort 214: { 215: $Apache::lonnet::hostname{$a} cmp 216: $Apache::lonnet::hostname{$b}; 217: } 218: keys(%Apache::lonnet::hostname)) { 219: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 220: next if ($last eq $Apache::lonnet::hostname{$hostid}); 221: $spares.='<br /><a href="http://'. 222: $Apache::lonnet::hostname{$hostid}. 223: '/adm/login?domain='.$authdomain.'">'. 224: $Apache::lonnet::hostname{$hostid}.'</a>'; 225: $last=$Apache::lonnet::hostname{$hostid}; 226: } 227: $r->print(<<ENDTROUBLE); 228: <html> 229: <head><title>The LearningOnline Network with CAPA</title></head> 230: <body bgcolor="#FFFFFF"> 231: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" /> 232: <h3>This LON-CAPA server is temporarily not available for login</h3> 233: <p>Please attempt to login to one of the following servers:</p>$spares 234: <p>If the problem persists, please contact <tt>$servadm</tt>.</p> 235: </body> 236: </html> 237: ENDTROUBLE 238: return OK; 239: } 240: 241: # ----------------------------------------------- Apparently we are in business 242: 243: my $domainlogo=&Apache::loncommon::domainlogo($domain); 244: $servadm=~s/\,/\<br \/\>/g; 245: $sysadm=~s/\,/\<br \/\>/g; 246: 247: # --------------------------------------------------- Print login screen header 248: $r->print(<<ENDHEADER); 249: <html> 250: <head> 251: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" /> 252: <title>The LearningOnline Network with CAPA Login</title> 253: </head> 254: ENDHEADER 255: # ---------------------------------------------------- Serve out DES JavaScript 256: { 257: my $jsh=Apache::File->new($include."/londes.js"); 258: $r->print(<$jsh>); 259: } 260: 261: # ----------------------------------------------------------- Front page design 262: my $pgbg= 263: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF'); 264: my $font= 265: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000'); 266: my $link= 267: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF'); 268: my $vlink= 269: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF'); 270: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 271: my $mainbg= 272: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF'); 273: my $sidebg= 274: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF'); 275: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 276: my $img=&Apache::loncommon::designparm('login.img',$domain); 277: 278: # ----------------------------------------------------------------------- Texts 279: 280: my %lt=&Apache::lonlocal::texthash( 281: 'un' => 'Username', 282: 'pw' => 'Password', 283: 'dom' => 'Domain', 284: 'perc' => 'percent', 285: 'load' => 'Load', 286: 'userload' => 'User Load', 287: 'about' => 'aboutlon.gif', 288: 'access' => 'accessbutton.gif', 289: 'auth' => 'userauthentication.gif', 290: 'log' => 'Log in', 291: 'help' => 'Help', 292: 'serv' => 'Server', 293: 'servadm' => 'Server Administration', 294: 'sysadm' => 'System Administration', 295: 'helpdesk' => 'Contact Helpdesk'); 296: # -------------------------------------------------- Change password field name 297: my $now=time; 298: # ---------------------------------------------------------- Serve rest of page 299: $r->print(<<ENDSCRIPT); 300: 301: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink" 302: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0> 303: 304: <script language="JavaScript"> 305: function send() 306: { 307: this.document.server.elements.uname.value 308: =this.document.client.elements.uname.value; 309: 310: this.document.server.elements.udom.value 311: =this.document.client.elements.udom.value; 312: 313: this.document.server.elements.imagesuppress.value 314: =this.document.client.elements.imagesuppress.checked; 315: 316: this.document.server.elements.embedsuppress.value 317: =this.document.client.elements.embedsuppress.checked; 318: 319: this.document.server.elements.appletsuppress.value 320: =this.document.client.elements.appletsuppress.checked; 321: 322: this.document.server.elements.fontenhance.value 323: =this.document.client.elements.fontenhance.checked; 324: 325: this.document.server.elements.blackwhite.value 326: =this.document.client.elements.blackwhite.checked; 327: 328: this.document.server.elements.remember.value 329: =this.document.client.elements.remember.checked; 330: 331: uextkey=this.document.client.elements.uextkey.value; 332: lextkey=this.document.client.elements.lextkey.value; 333: initkeys(); 334: 335: this.document.server.elements.upass0.value 336: =crypted(this.document.client.elements.upass$now.value.substr(0,15)); 337: this.document.server.elements.upass1.value 338: =crypted(this.document.client.elements.upass$now.value.substr(15,15)); 339: this.document.server.elements.upass2.value 340: =crypted(this.document.client.elements.upass$now.value.substr(30,15)); 341: 342: this.document.client.elements.uname.value=''; 343: this.document.client.elements.upass$now.value=''; 344: 345: this.document.server.submit(); 346: return false; 347: } 348: </script> 349: ENDSCRIPT 350: 351: if ($fullgraph) { 352: $r->print( 353: '<table width="100%" cellpadding=0 cellspacing=0 border=0>'); 354: } 355: 356: $r->print(<<ENDSERVERFORM); 357: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top"> 358: <input type="hidden" name="logtoken" value="$logtoken" /> 359: <input type="hidden" name="serverid" value="$lonhost" /> 360: <input type="hidden" name="interface" value="$env{'form.interface'}" /> 361: <input type="hidden" name="uname" value="" /> 362: <input type="hidden" name="upass0" value="" /> 363: <input type="hidden" name="upass1" value="" /> 364: <input type="hidden" name="upass2" value="" /> 365: <input type="hidden" name="udom" value="" /> 366: <input type="hidden" name="imagesuppress" value="" /> 367: <input type="hidden" name="appletsuppress" value="" /> 368: <input type="hidden" name="embedsuppress" value="" /> 369: <input type="hidden" name="fontenhance" value="" /> 370: <input type="hidden" name="blackwhite" value="" /> 371: <input type="hidden" name="remember" value="" /> 372: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 373: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 374: </form> 375: ENDSERVERFORM 376: if ($fullgraph) { $r->print(<<ENDTOP); 377:  378: <tr> 379: 380:  381: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td> 382: </tr> 383: 384:  385: <tr> 386: 387:  388: <td width=182 height=27 bgcolor="$sidebg"> </td> 389: 390:  391: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td> 392: 393:  394: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td> 395: 396:  397: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td> 398: </tr> 399: <tr> 400: 401:  402:  403: <td valign="top" height=60 align="center" bgcolor="$sidebg"> 404: <a href="/adm/login?interface=textual"><img src="$iconpath/$lt{'access'}" border=0 alt="Accessibility Options" /></a> 405: <br /> 406: <a href="/adm/about.html"><img src="$iconpath/$lt{'about'}" border=0 alt="About LON-CAPA" /></a> 407: </td> 408: 409:  410:  411: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 412: 413:  414:  415: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg"> 416: <center> 417: <img src="$logo" alt="" /> 418: </center> 419: </td> 420: 421:  422: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 423: </tr> 424: <tr> 425: 426:  427:  428: <td align="center" valign="middle" bgcolor="$sidebg"> 429: ENDTOP 430: } else { 431: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements); 432: } 433: $r->print('<form name="client" onsubmit="return(send())">'); 434: unless ($fullgraph) { 435: $r->print(<<ENDACCESSOPTIONS); 436: <h3>Select Accessibility Options</h3> 437: <label><input type="checkbox" name="imagesuppress" /> Suppress rendering of images</label><br /> 438: <label><input type="checkbox" name="appletsuppress" /> Suppress Java applets</label><br /> 439: <label><input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia</label><br /> 440: <label><input type="checkbox" name="fontenhance" /> Increase font size</label><br /> 441: <label><input type="checkbox" name="blackwhite" /> Switch to black and white mode</label><br /> 442: <p>If you have accessibility needs that are not addressed by this interface, 443: please 444: contact the system administrator at <tt>$sysadm</tt>.</p><br /> 445: <input type="checkbox" name="remember" /> Remember these settings for next login<hr /> 446: ENDACCESSOPTIONS 447: } else { 448: $r->print(<<ENDNOOPT); 449: <input type="hidden" name="imagesuppress" value="" /> 450: <input type="hidden" name="embedsuppress" value="" /> 451: <input type="hidden" name="appletsuppress" value="" /> 452: <input type="hidden" name="fontenhance" value="" /> 453: <input type="hidden" name="blackwhite" value="" /> 454: <input type="hidden" name="remember" value="" /> 455: ENDNOOPT 456: } 457: $r->print(<<ENDLOGIN); 458: <input type="hidden" name="lextkey" value="$lextkey"> 459: <input type="hidden" name="uextkey" value="$uextkey"> 460: 461:  462: <table border=0 cellspacing=0 cellpadding=0> 463: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/$lt{'auth'}" alt="User Authentication" /></td></tr> 464: <tr> 465: <td bgcolor="$mainbg"><br /><font size=-1><b>   $lt{'un'}:</b></font></td> 466: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td> 467: </tr> 468: <tr> 469: <td bgcolor="$mainbg"><font size=-1><b>   $lt{'pw'}:</b></font></td> 470: <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td> 471: </tr> 472: <tr> 473: <td bgcolor="$mainbg"><font size=-1><b>   $lt{'dom'}:</b></font></td> 474: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td> 475: </tr> 476: <tr> 477: <td bgcolor="$mainbg">   <a href="/adm/loginproblems.html">$lt{'help'}</a></td> 478: <td bgcolor="$mainbg" valign="bottom" align="center"> 479: <br /> 480: <input type="submit" value="$lt{'log'}" /> 481: </td> 482: </tr> 483: </table> 484:  485: </form> 486: ENDLOGIN 487: if ($fullgraph) { 488: my $helpdeskscript; 489: my $contactblock = &contactdisplay(\%lt,$sysadm,$servadm,$version,$authdomain,\$helpdeskscript); 490: $r->print(<<ENDDOCUMENT); 491: </td> 492: 493:  494: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 495: 496:  497: <td bgcolor="$mainbg">$announcements</td> 498: 499:  500: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 501: </tr> 502: <tr> 503: 504:  505: <td bgcolor="$sidebg" valign="middle" align="left"> 506: <br /> 507: <table border=0 cellspacing=0 cellpadding=0> 508: <tr> 509: <td bgcolor="$sidebg" align="left" valign="top"> 510: <small><b>   $lt{'dom'}: </b></small> 511: </td> 512: <td bgcolor="$sidebg" align="left" valign="top"> 513: <small><tt> $domain</tt></small> 514: </td> 515: </tr> 516: <tr> 517: <td bgcolor="$sidebg" align="left" valign="top"> 518: <small><b>   $lt{'serv'}: </b></small> 519: </td> 520: <td bgcolor="$sidebg" align="left" valign="top"> 521: <small><tt> $lonhost ($role)</tt></small> 522: </td> 523: </tr> 524: <tr> 525: <td bgcolor="$sidebg" align="left" valign="top"> 526: <small><b>   $lt{'load'}: </b></small> 527: </td> 528: <td bgcolor="$sidebg" align="left" valign="top"> 529: <small><tt> $loadpercent $lt{'perc'}</tt></small> 530: </td> 531: </tr> 532: <tr> 533: <td bgcolor="$sidebg" align="left" valign="top"> 534: <small><b>   $lt{'userload'}: </b></small> 535: </td> 536: <td bgcolor="$sidebg" align="left" valign="top"> 537: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 538: </td> 539: </tr> 540: </table> 541: <br /> 542: $contactblock 543: </td> 544: 545:  546: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 547: 548:  549: <td width="100%" valign="bottom" bgcolor="$mainbg"> 550: $domainlogo 551: </td> 552: 553:  554: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 555: </tr> 556: <tr> 557: 558:  559: <td bgcolor="$sidebg"> </td> 560: 561:  562: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td> 563: 564:  565: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td> 566: 567:  568: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td> 569: </tr> 570: </table> 571: 572: <script type="text/javascript"> 573: // the if prevents the script error if the browser can not handle this 574: if ( document.client.uname ) { document.client.uname.focus(); } 575: </script> 576: $helpdeskscript 577: 578: ENDDOCUMENT 579: } 580: $r->print('</body></html>'); 581: return OK; 582: } 583: 584: sub contactdisplay { 585: my ($lt,$sysadm,$servadm,$version,$authdomain,$helpdeskscript) = @_; 586: my $contactblock; 587: my $showsysadm = 1; 588: my $showservadm = 1; 589: my $showhelpdesk = 0; 590: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 591: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { 592: $showhelpdesk = 1; 593: } 594: if ($showsysadm) { 595: $contactblock .= '<b>   '.$$lt{'sysadm'}.':</b><br />'. 596: '<tt>      '.$sysadm.'</tt><br />'; 597: } 598: if ($showservadm) { 599: $contactblock .= '<b>   '.$$lt{'servadm'}.':</b><br />'. 600: '<tt>      '.$servadm.'</tt><br /> <br />'; 601: } 602: if ($showhelpdesk) { 603: $contactblock .= '<b>   <a href="javascript:helpdesk()">'.$$lt{'helpdesk'}.'</a></b><br />'; 604: my $thisurl = &Apache::lonnet::escape('/adm/login'); 605: $$helpdeskscript = <<"ENDSCRIPT"; 606: <script type="text/javascript"> 607: function helpdesk() { 608: var codedom = document.client.udom.value; 609: if (codedom == '') { 610: codedom = "$authdomain"; 611: } 612: var querystr = "origurl=$thisurl&codedom="+codedom; 613: document.location.href = "/adm/helpdesk?"+querystr; 614: return; 615: } 616: </script> 617: ENDSCRIPT 618: } 619: $contactblock .= <<"ENDBLOCK"; 620:    $version 621: ENDBLOCK 622: return $contactblock; 623: } 624: 625: 626: 1; 627: __END__