loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.79: download - view: text, annotated - select for diffs
Tue Aug 29 20:12:43 2006 UTC (17 years, 8 months ago) by albertel
Branches: MAIN
CVS tags: version_2_2_1, HEAD

- get redirected from arguments (in case were the ErrorDocument)

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.79 2006/08/29 20:12:43 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: use lib '/home/httpd/lib/perl/'; 41: use LONCAPA; 42: 43: 44: sub handler { 45: my $r = shift; 46: 47: &Apache::loncommon::get_unprocessed_cgi 48: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, 49: $ENV{'REDIRECT_QUERY_STRING'}), 50: ['interface','username','domain','firsturl','localpath','localres', 51: 'token']); 52: 53: # -- check if they are a migrating user 54: if (defined($env{'form.token'})) { 55: return &Apache::migrateuser::handler($r); 56: } 57: 58: &Apache::loncommon::no_cache($r); 59: &Apache::lonlocal::get_language_handle($r); 60: &Apache::loncommon::content_type($r,'text/html'); 61: $r->send_http_header; 62: return OK if $r->header_only; 63: 64: 65: # Are we re-routing? 66: if (-e '/home/httpd/html/lon-status/reroute.txt') { 67: &Apache::lonauth::reroute($r); 68: return OK; 69: } 70: 71: 72: # -------------------------------- Prevent users from attempting to login twice 73: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 74: my $lonid=$cookies{'lonID'}; 75: my $cookie; 76: if ($lonid) { 77: my $handle=$lonid->value; 78: $handle=~s/\W//g; 79: my $lonidsdir=$r->dir_config('lonIDsDir'); 80: if (-e "$lonidsdir/$handle.id") { 81: # Is there an existing token file? 82: if ($handle=~/^publicuser\_/) { 83: # For "public user" - remove it, we apparently really want to login 84: unlink("$lonidsdir/$handle.id"); 85: } elsif ($handle ne '') { 86: # Indeed, a valid token is found 87: my $start_page = 88: &Apache::loncommon::start_page('Already logged in'); 89: my $end_page = 90: &Apache::loncommon::end_page(); 91: $r->print(<<ENDFAILED); 92: $start_page 93: <h1>You are already logged in</h1> 94: <p>Please either <a href="/adm/roles">continue the current session</a> or 95: <a href="/adm/logout">logout</a>.</p> 96: <p> 97: <a href="/adm/loginproblems.html">Problems?</a></p> 98: $end_page 99: ENDFAILED 100: return OK; 101: } 102: } 103: } 104: 105: # ---------------------------------------------------- No valid token, continue 106: 107: # ---------------------------- Not possible to really login to domain "public" 108: if ($env{'form.domain'} eq 'public') { 109: $env{'form.domain'}=''; 110: $env{'form.username'}=''; 111: } 112: # ----------------------------------------------------------- Process Interface 113: $env{'form.interface'}=~s/\W//g; 114: 115: my $textbrowsers=$r->dir_config('lonTextBrowsers'); 116: my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; 117: 118: foreach (split(/\:/,$textbrowsers)) { 119: if ($httpbrowser=~/$_/i) { 120: $env{'form.interface'}='textual'; 121: } 122: } 123: 124: my $fullgraph=($env{'form.interface'} ne 'textual'); 125: my $port_to_use=$r->dir_config('lonhttpdPort'); 126: if (!defined($port_to_use)) { 127: $port_to_use='8080'; 128: } 129: my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use. 130: $r->dir_config('lonIconsURL'); 131: my $domain = $r->dir_config('lonDefDomain'); 132: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0]; 133: foreach my $posdom (&Apache::lonnet::current_machine_domains()) { 134: if (lc($posdom) eq lc($testdomain)) { $domain=$posdom; } 135: } 136: if (($env{'form.domain'}) && 137: ($Apache::lonnet::domaindescription{$env{'form.domain'}})) { 138: $domain=$env{'form.domain'}; 139: } 140: my $role = $r->dir_config('lonRole'); 141: my $loadlim = $r->dir_config('lonLoadLim'); 142: my $servadm = $r->dir_config('lonAdmEMail'); 143: my $sysadm = $r->dir_config('lonSysEMail'); 144: my $lonhost = $r->dir_config('lonHostID'); 145: my $tabdir = $r->dir_config('lonTabDir'); 146: my $include = $r->dir_config('lonIncludes'); 147: my $expire = $r->dir_config('lonExpire'); 148: my $version = $r->dir_config('lonVersion'); 149: my $host_name = $Apache::lonnet::hostname{$lonhost}; 150: 151: # --------------------------------------------- Default values for login fields 152: 153: my $authusername=($env{'form.username'}?$env{'form.username'}:''); 154: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 155: 156: # ---------------------------------------------------------- Determine own load 157: my $loadavg; 158: { 159: my $loadfile=Apache::File->new('/proc/loadavg'); 160: $loadavg=<$loadfile>; 161: } 162: $loadavg =~ s/\s.*//g; 163: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 164: my $userloadpercent=&Apache::lonnet::userload(); 165: 166: # ------------------------------------------------------- Do the load balancing 167: my $otherserver= &Apache::loncommon::absolute_url($host_name); 168: my $firsturl= 169: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 170: # ---------------------------------------- Are we access server and overloaded? 171: if (($role eq 'access') && 172: (($userloadpercent>100.0)||($loadpercent>100.0))) { 173: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent); 174: if ($unloaded) { $otherserver=$unloaded; } 175: } 176: 177: # ----------------------------------------------------------- Get announcements 178: my $announcements=&Apache::lonnet::getannounce(); 179: # -------------------------------------------------------- Set login parameters 180: 181: my @hexstr=('0','1','2','3','4','5','6','7', 182: '8','9','a','b','c','d','e','f'); 183: my $lkey=''; 184: for (0..7) { 185: $lkey.=$hexstr[rand(15)]; 186: } 187: 188: my $ukey=''; 189: for (0..7) { 190: $ukey.=$hexstr[rand(15)]; 191: } 192: 193: my $lextkey=hex($lkey); 194: if ($lextkey>2147483647) { $lextkey-=4294967296; } 195: 196: my $uextkey=hex($ukey); 197: if ($uextkey>2147483647) { $uextkey-=4294967296; } 198: 199: # -------------------------------------------------------- Store away log token 200: my $logtoken=Apache::lonnet::reply( 201: 'tmpput:'.$ukey.$lkey.'&'.$firsturl, 202: $lonhost); 203: 204: # ------------------- If we cannot talk to ourselves, we are in serious trouble 205: 206: if ($logtoken eq 'con_lost') { 207: my $spares=''; 208: my $last; 209: foreach my $hostid (sort 210: { 211: $Apache::lonnet::hostname{$a} cmp 212: $Apache::lonnet::hostname{$b}; 213: } 214: keys(%Apache::lonnet::spareid)) { 215: next if ($hostid eq $lonhost); 216: next if ($last eq $Apache::lonnet::hostname{$hostid}); 217: $spares.='<br /><font size="+1"><a href="http://'. 218: $Apache::lonnet::hostname{$hostid}. 219: '/adm/login?domain='.$authdomain.'">'. 220: $Apache::lonnet::hostname{$hostid}.'</a>'. 221: ' (preferred)</font>'.$/; 222: $last=$Apache::lonnet::hostname{$hostid}; 223: } 224: $spares.= '<br />'; 225: foreach my $hostid (sort 226: { 227: $Apache::lonnet::hostname{$a} cmp 228: $Apache::lonnet::hostname{$b}; 229: } 230: keys(%Apache::lonnet::hostname)) { 231: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 232: next if ($last eq $Apache::lonnet::hostname{$hostid}); 233: $spares.='<br /><a href="http://'. 234: $Apache::lonnet::hostname{$hostid}. 235: '/adm/login?domain='.$authdomain.'">'. 236: $Apache::lonnet::hostname{$hostid}.'</a>'; 237: $last=$Apache::lonnet::hostname{$hostid}; 238: } 239: $r->print(<<ENDTROUBLE); 240: <html> 241: <head><title>The LearningOnline Network with CAPA</title></head> 242: <body bgcolor="#FFFFFF"> 243: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" /> 244: <h3>This LON-CAPA server is temporarily not available for login</h3> 245: <p>Please attempt to login to one of the following servers:</p>$spares 246: <p>If the problem persists, please contact <tt>$servadm</tt>.</p> 247: </body> 248: </html> 249: ENDTROUBLE 250: return OK; 251: } 252: 253: # ----------------------------------------------- Apparently we are in business 254: 255: my $domainlogo=&Apache::loncommon::domainlogo($domain); 256: $servadm=~s/\,/\<br \/\>/g; 257: $sysadm=~s/\,/\<br \/\>/g; 258: 259: # --------------------------------------------------- Print login screen header 260: $r->print(<<ENDHEADER); 261: <html> 262: <head> 263: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" /> 264: <title>The LearningOnline Network with CAPA Login</title> 265: </head> 266: ENDHEADER 267: # ---------------------------------------------------- Serve out DES JavaScript 268: { 269: my $jsh=Apache::File->new($include."/londes.js"); 270: $r->print(<$jsh>); 271: } 272: 273: # ----------------------------------------------------------- Front page design 274: my $pgbg= 275: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF'); 276: my $font= 277: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000'); 278: my $link= 279: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF'); 280: my $vlink= 281: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF'); 282: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 283: my $mainbg= 284: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF'); 285: my $sidebg= 286: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF'); 287: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 288: my $img=&Apache::loncommon::designparm('login.img',$domain); 289: 290: # ----------------------------------------------------------------------- Texts 291: 292: my %lt=&Apache::lonlocal::texthash( 293: 'un' => 'Username', 294: 'pw' => 'Password', 295: 'dom' => 'Domain', 296: 'perc' => 'percent', 297: 'load' => 'Load', 298: 'userload' => 'User Load', 299: 'about' => 'aboutlon.gif', 300: 'access' => 'accessbutton.gif', 301: 'auth' => 'userauthentication.gif', 302: 'log' => 'Log in', 303: 'help' => 'Help', 304: 'serv' => 'Server', 305: 'servadm' => 'Server Administration', 306: 'sysadm' => 'System Administration', 307: 'helpdesk' => 'Contact Helpdesk'); 308: # -------------------------------------------------- Change password field name 309: my $now=time; 310: # ---------------------------------------------------------- Serve rest of page 311: $r->print(<<ENDSCRIPT); 312: 313: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink" 314: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0> 315: 316: <script language="JavaScript"> 317: function send() 318: { 319: this.document.server.elements.uname.value 320: =this.document.client.elements.uname.value; 321: 322: this.document.server.elements.udom.value 323: =this.document.client.elements.udom.value; 324: 325: this.document.server.elements.imagesuppress.value 326: =this.document.client.elements.imagesuppress.checked; 327: 328: this.document.server.elements.embedsuppress.value 329: =this.document.client.elements.embedsuppress.checked; 330: 331: this.document.server.elements.appletsuppress.value 332: =this.document.client.elements.appletsuppress.checked; 333: 334: this.document.server.elements.fontenhance.value 335: =this.document.client.elements.fontenhance.checked; 336: 337: this.document.server.elements.blackwhite.value 338: =this.document.client.elements.blackwhite.checked; 339: 340: this.document.server.elements.remember.value 341: =this.document.client.elements.remember.checked; 342: 343: uextkey=this.document.client.elements.uextkey.value; 344: lextkey=this.document.client.elements.lextkey.value; 345: initkeys(); 346: 347: this.document.server.elements.upass0.value 348: =crypted(this.document.client.elements.upass$now.value.substr(0,15)); 349: this.document.server.elements.upass1.value 350: =crypted(this.document.client.elements.upass$now.value.substr(15,15)); 351: this.document.server.elements.upass2.value 352: =crypted(this.document.client.elements.upass$now.value.substr(30,15)); 353: 354: this.document.client.elements.uname.value=''; 355: this.document.client.elements.upass$now.value=''; 356: 357: this.document.server.submit(); 358: return false; 359: } 360: </script> 361: ENDSCRIPT 362: 363: if ($fullgraph) { 364: $r->print( 365: '<table width="100%" cellpadding=0 cellspacing=0 border=0>'); 366: } 367: 368: $r->print(<<ENDSERVERFORM); 369: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top"> 370: <input type="hidden" name="logtoken" value="$logtoken" /> 371: <input type="hidden" name="serverid" value="$lonhost" /> 372: <input type="hidden" name="interface" value="$env{'form.interface'}" /> 373: <input type="hidden" name="uname" value="" /> 374: <input type="hidden" name="upass0" value="" /> 375: <input type="hidden" name="upass1" value="" /> 376: <input type="hidden" name="upass2" value="" /> 377: <input type="hidden" name="udom" value="" /> 378: <input type="hidden" name="imagesuppress" value="" /> 379: <input type="hidden" name="appletsuppress" value="" /> 380: <input type="hidden" name="embedsuppress" value="" /> 381: <input type="hidden" name="fontenhance" value="" /> 382: <input type="hidden" name="blackwhite" value="" /> 383: <input type="hidden" name="remember" value="" /> 384: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 385: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 386: </form> 387: ENDSERVERFORM 388: if ($fullgraph) { $r->print(<<ENDTOP); 389:  390: <tr> 391: 392:  393: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td> 394: </tr> 395: 396:  397: <tr> 398: 399:  400: <td width=182 height=27 bgcolor="$sidebg"> </td> 401: 402:  403: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td> 404: 405:  406: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td> 407: 408:  409: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td> 410: </tr> 411: <tr> 412: 413:  414:  415: <td valign="top" height=60 align="center" bgcolor="$sidebg"> 416: <a href="/adm/login?interface=textual"><img src="$iconpath/$lt{'access'}" border=0 alt="Accessibility Options" /></a> 417: <br /> 418: <a href="/adm/about.html"><img src="$iconpath/$lt{'about'}" border=0 alt="About LON-CAPA" /></a> 419: </td> 420: 421:  422:  423: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 424: 425:  426:  427: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg"> 428: <center> 429: <img src="$logo" alt="" /> 430: </center> 431: </td> 432: 433:  434: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 435: </tr> 436: <tr> 437: 438:  439:  440: <td align="center" valign="middle" bgcolor="$sidebg"> 441: ENDTOP 442: } else { 443: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements); 444: } 445: $r->print('<form name="client" onsubmit="return(send())">'); 446: unless ($fullgraph) { 447: $r->print(<<ENDACCESSOPTIONS); 448: <h3>Select Accessibility Options</h3> 449: <label><input type="checkbox" name="imagesuppress" /> Suppress rendering of images</label><br /> 450: <label><input type="checkbox" name="appletsuppress" /> Suppress Java applets</label><br /> 451: <label><input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia</label><br /> 452: <label><input type="checkbox" name="fontenhance" /> Increase font size</label><br /> 453: <label><input type="checkbox" name="blackwhite" /> Switch to black and white mode</label><br /> 454: <p>If you have accessibility needs that are not addressed by this interface, 455: please 456: contact the system administrator at <tt>$sysadm</tt>.</p><br /> 457: <input type="checkbox" name="remember" /> Remember these settings for next login<hr /> 458: ENDACCESSOPTIONS 459: } else { 460: $r->print(<<ENDNOOPT); 461: <input type="hidden" name="imagesuppress" value="" /> 462: <input type="hidden" name="embedsuppress" value="" /> 463: <input type="hidden" name="appletsuppress" value="" /> 464: <input type="hidden" name="fontenhance" value="" /> 465: <input type="hidden" name="blackwhite" value="" /> 466: <input type="hidden" name="remember" value="" /> 467: ENDNOOPT 468: } 469: $r->print(<<ENDLOGIN); 470: <input type="hidden" name="lextkey" value="$lextkey"> 471: <input type="hidden" name="uextkey" value="$uextkey"> 472: 473:  474: <table border=0 cellspacing=0 cellpadding=0> 475: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/$lt{'auth'}" alt="User Authentication" /></td></tr> 476: <tr> 477: <td bgcolor="$mainbg"><br /><font size=-1><b>   $lt{'un'}:</b></font></td> 478: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td> 479: </tr> 480: <tr> 481: <td bgcolor="$mainbg"><font size=-1><b>   $lt{'pw'}:</b></font></td> 482: <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td> 483: </tr> 484: <tr> 485: <td bgcolor="$mainbg"><font size=-1><b>   $lt{'dom'}:</b></font></td> 486: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td> 487: </tr> 488: <tr> 489: <td bgcolor="$mainbg">   <a href="/adm/loginproblems.html">$lt{'help'}</a></td> 490: <td bgcolor="$mainbg" valign="bottom" align="center"> 491: <br /> 492: <input type="submit" value="$lt{'log'}" /> 493: </td> 494: </tr> 495: </table> 496:  497: </form> 498: ENDLOGIN 499: if ($fullgraph) { 500: my $helpdeskscript; 501: my $contactblock = &contactdisplay(\%lt,$sysadm,$servadm,$version,$authdomain,\$helpdeskscript); 502: $r->print(<<ENDDOCUMENT); 503: </td> 504: 505:  506: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 507: 508:  509: <td bgcolor="$mainbg">$announcements</td> 510: 511:  512: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 513: </tr> 514: <tr> 515: 516:  517: <td bgcolor="$sidebg" valign="middle" align="left"> 518: <br /> 519: <table border=0 cellspacing=0 cellpadding=0> 520: <tr> 521: <td bgcolor="$sidebg" align="left" valign="top"> 522: <small><b>   $lt{'dom'}: </b></small> 523: </td> 524: <td bgcolor="$sidebg" align="left" valign="top"> 525: <small><tt> $domain</tt></small> 526: </td> 527: </tr> 528: <tr> 529: <td bgcolor="$sidebg" align="left" valign="top"> 530: <small><b>   $lt{'serv'}: </b></small> 531: </td> 532: <td bgcolor="$sidebg" align="left" valign="top"> 533: <small><tt> $lonhost ($role)</tt></small> 534: </td> 535: </tr> 536: <tr> 537: <td bgcolor="$sidebg" align="left" valign="top"> 538: <small><b>   $lt{'load'}: </b></small> 539: </td> 540: <td bgcolor="$sidebg" align="left" valign="top"> 541: <small><tt> $loadpercent $lt{'perc'}</tt></small> 542: </td> 543: </tr> 544: <tr> 545: <td bgcolor="$sidebg" align="left" valign="top"> 546: <small><b>   $lt{'userload'}: </b></small> 547: </td> 548: <td bgcolor="$sidebg" align="left" valign="top"> 549: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 550: </td> 551: </tr> 552: </table> 553: <br /> 554: $contactblock 555: </td> 556: 557:  558: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td> 559: 560:  561: <td width="100%" valign="bottom" bgcolor="$mainbg"> 562: $domainlogo 563: </td> 564: 565:  566: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td> 567: </tr> 568: <tr> 569: 570:  571: <td bgcolor="$sidebg"> </td> 572: 573:  574: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td> 575: 576:  577: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td> 578: 579:  580: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td> 581: </tr> 582: </table> 583: 584: <script type="text/javascript"> 585: // the if prevents the script error if the browser can not handle this 586: if ( document.client.uname ) { document.client.uname.focus(); } 587: </script> 588: $helpdeskscript 589: 590: ENDDOCUMENT 591: } 592: $r->print('</body></html>'); 593: return OK; 594: } 595: 596: sub contactdisplay { 597: my ($lt,$sysadm,$servadm,$version,$authdomain,$helpdeskscript) = @_; 598: my $contactblock; 599: my $showsysadm = 1; 600: my $showservadm = 1; 601: my $showhelpdesk = 0; 602: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 603: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { 604: $showhelpdesk = 1; 605: } 606: if ($showsysadm) { 607: $contactblock .= '<b>   '.$$lt{'sysadm'}.':</b><br />'. 608: '<tt>      '.$sysadm.'</tt><br />'; 609: } 610: if ($showservadm) { 611: $contactblock .= '<b>   '.$$lt{'servadm'}.':</b><br />'. 612: '<tt>      '.$servadm.'</tt><br /> <br />'; 613: } 614: if ($showhelpdesk) { 615: $contactblock .= '<b>   <a href="javascript:helpdesk()">'.$$lt{'helpdesk'}.'</a></b><br />'; 616: my $thisurl = &escape('/adm/login'); 617: $$helpdeskscript = <<"ENDSCRIPT"; 618: <script type="text/javascript"> 619: function helpdesk() { 620: var codedom = document.client.udom.value; 621: if (codedom == '') { 622: codedom = "$authdomain"; 623: } 624: var querystr = "origurl=$thisurl&codedom="+codedom; 625: document.location.href = "/adm/helpdesk?"+querystr; 626: return; 627: } 628: </script> 629: ENDSCRIPT 630: } 631: $contactblock .= <<"ENDBLOCK"; 632:    $version 633: ENDBLOCK 634: return $contactblock; 635: } 636: 637: 638: 1; 639: __END__