loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.148: download - view: text, annotated - select for diffs
Sat Jun 11 18:21:07 2011 UTC (12 years, 10 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_10_X, version_2_10_1, HEAD

- Check for "no_such_host" response when storing logtoken.
- Only display advice to log-in into another server, if they
  other servers are available.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.148 2011/06/11 18:21:07 raeburn 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 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: $ENV{'REDIRECT_QUERY_STRING'}), 48: ['interface','username','domain','firsturl','localpath','localres', 49: 'token','role','symb']); 50: if (!defined($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: $env{'form.firsturl'} =~ s/(`)/'/g; 73: 74: # -------------------------------- Prevent users from attempting to login twice 75: my $handle = &Apache::lonnet::check_for_valid_session($r); 76: if ($handle ne '') { 77: my $lonidsdir=$r->dir_config('lonIDsDir'); 78: if ($handle=~/^publicuser\_/) { 79: # For "public user" - remove it, we apparently really want to login 80: unlink($r->dir_config('lonIDsDir')."/$handle.id"); 81: } else { 82: # Indeed, a valid token is found 83: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 84: my $start_page = 85: &Apache::loncommon::start_page('Already logged in'); 86: my $end_page = 87: &Apache::loncommon::end_page(); 88: my $dest = '/adm/roles'; 89: if ($env{'form.firsturl'} ne '') { 90: $dest = $env{'form.firsturl'}; 91: } 92: $r->print( 93: $start_page 94: .'<h1>'.&mt('You are already logged in!').'</h1>' 95: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 96: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 97: .$end_page 98: ); 99: return OK; 100: } 101: } 102: 103: # ---------------------------------------------------- No valid token, continue 104: 105: # ---------------------------- Not possible to really login to domain "public" 106: if ($env{'form.domain'} eq 'public') { 107: $env{'form.domain'}=''; 108: $env{'form.username'}=''; 109: } 110: # ----------------------------------------------------------- Process Interface 111: $env{'form.interface'}=~s/\W//g; 112: 113: my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; 114: 115: my $iconpath= 116: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 117: 118: my $lonhost = $r->dir_config('lonHostID'); 119: my $domain = &Apache::lonnet::default_login_domain(); 120: if ($lonhost ne '') { 121: my $redirect = &check_loginvia($domain,$lonhost); 122: if ($redirect) { 123: $r->print($redirect); 124: return OK; 125: } 126: } 127: 128: if (($env{'form.domain'}) && 129: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 130: $domain=$env{'form.domain'}; 131: } 132: my $role = $r->dir_config('lonRole'); 133: my $loadlim = $r->dir_config('lonLoadLim'); 134: my $uloadlim= $r->dir_config('lonUserLoadLim'); 135: my $servadm = $r->dir_config('lonAdmEMail'); 136: my $tabdir = $r->dir_config('lonTabDir'); 137: my $include = $r->dir_config('lonIncludes'); 138: my $expire = $r->dir_config('lonExpire'); 139: my $version = $r->dir_config('lonVersion'); 140: my $host_name = &Apache::lonnet::hostname($lonhost); 141: 142: # --------------------------------------------- Default values for login fields 143: 144: my $authusername=($env{'form.username'}?$env{'form.username'}:''); 145: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 146: 147: # ---------------------------------------------------------- Determine own load 148: my $loadavg; 149: { 150: my $loadfile=Apache::File->new('/proc/loadavg'); 151: $loadavg=<$loadfile>; 152: } 153: $loadavg =~ s/\s.*//g; 154: 155: my ($loadpercent,$userloadpercent); 156: if ($loadlim) { 157: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 158: } 159: if ($uloadlim) { 160: $userloadpercent=&Apache::lonnet::userload(); 161: } 162: 163: my $firsturl= 164: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 165: 166: # ----------------------------------------------------------- Get announcements 167: my $announcements=&Apache::lonnet::getannounce(); 168: # -------------------------------------------------------- Set login parameters 169: 170: my @hexstr=('0','1','2','3','4','5','6','7', 171: '8','9','a','b','c','d','e','f'); 172: my $lkey=''; 173: for (0..7) { 174: $lkey.=$hexstr[rand(15)]; 175: } 176: 177: my $ukey=''; 178: for (0..7) { 179: $ukey.=$hexstr[rand(15)]; 180: } 181: 182: my $lextkey=hex($lkey); 183: if ($lextkey>2147483647) { $lextkey-=4294967296; } 184: 185: my $uextkey=hex($ukey); 186: if ($uextkey>2147483647) { $uextkey-=4294967296; } 187: 188: # -------------------------------------------------------- Store away log token 189: my $tokenextras; 190: if ($env{'form.role'}) { 191: $tokenextras = '&role='.&escape($env{'form.role'}); 192: } 193: if ($env{'form.symb'}) { 194: if (!$tokenextras) { 195: $tokenextras = '&'; 196: } 197: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 198: } 199: my $logtoken=Apache::lonnet::reply( 200: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 201: $lonhost); 202: 203: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 204: # we are in serious trouble 205: 206: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 207: if ($logtoken eq 'no_such_host') { 208: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 209: } 210: my $spares=''; 211: my $last; 212: foreach my $hostid (sort 213: { 214: &Apache::lonnet::hostname($a) cmp 215: &Apache::lonnet::hostname($b); 216: } 217: keys(%Apache::lonnet::spareid)) { 218: next if ($hostid eq $lonhost); 219: my $hostname = &Apache::lonnet::hostname($hostid); 220: next if (($last eq $hostname) || ($hostname eq '')); 221: $spares.='<br /><font size="+1"><a href="http://'. 222: $hostname. 223: '/adm/login?domain='.$authdomain.'">'. 224: $hostname.'</a>'. 225: ' '.&mt('(preferred)').'</font>'.$/; 226: $last=$hostname; 227: } 228: if ($spares) { 229: $spares.= '<br />'; 230: } 231: my %all_hostnames = &Apache::lonnet::all_hostnames(); 232: foreach my $hostid (sort 233: { 234: &Apache::lonnet::hostname($a) cmp 235: &Apache::lonnet::hostname($b); 236: } 237: keys(%all_hostnames)) { 238: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 239: my $hostname = &Apache::lonnet::hostname($hostid); 240: next if (($last eq $hostname) || ($hostname eq '')); 241: $spares.='<br /><a href="http://'. 242: $hostname. 243: '/adm/login?domain='.$authdomain.'">'. 244: $hostname.'</a>'; 245: $last=$hostname; 246: } 247: $r->print( 248: '<html>' 249: .'<head><title>' 250: .&mt('The LearningOnline Network with CAPA') 251: .'</title></head>' 252: .'<body bgcolor="#FFFFFF">' 253: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 254: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />' 255: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 256: if ($spares) { 257: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 258: .'</p>' 259: .$spares); 260: } 261: $r->print('</body>' 262: .'</html>' 263: ); 264: return OK; 265: } 266: 267: # ----------------------------------------------- Apparently we are in business 268: $servadm=~s/\,/\<br \/\>/g; 269: 270: # ----------------------------------------------------------- Front page design 271: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 272: my $font=&Apache::loncommon::designparm('login.font',$domain); 273: my $link=&Apache::loncommon::designparm('login.link',$domain); 274: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 275: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 276: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 277: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 278: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 279: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 280: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 281: my $img=&Apache::loncommon::designparm('login.img',$domain); 282: my $domainlogo=&Apache::loncommon::domainlogo($domain); 283: my $showbanner = 1; 284: my $showmainlogo = 1; 285: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 286: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 287: } 288: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 289: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 290: } 291: my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 292: my $showcoursecat = 293: &Apache::loncommon::designparm('login.coursecatalog',$domain); 294: my $shownewuserlink = 295: &Apache::loncommon::designparm('login.newuser',$domain); 296: my $now=time; 297: my $js = (<<ENDSCRIPT); 298: 299: <script type="text/javascript" language="JavaScript"> 300: // <![CDATA[ 301: function send() 302: { 303: this.document.server.elements.uname.value 304: =this.document.client.elements.uname.value; 305: 306: this.document.server.elements.udom.value 307: =this.document.client.elements.udom.value; 308: 309: uextkey=this.document.client.elements.uextkey.value; 310: lextkey=this.document.client.elements.lextkey.value; 311: initkeys(); 312: 313: this.document.server.elements.upass0.value 314: =crypted(this.document.client.elements.upass$now.value.substr(0,15)); 315: this.document.server.elements.upass1.value 316: =crypted(this.document.client.elements.upass$now.value.substr(15,15)); 317: this.document.server.elements.upass2.value 318: =crypted(this.document.client.elements.upass$now.value.substr(30,15)); 319: 320: this.document.client.elements.uname.value=''; 321: this.document.client.elements.upass$now.value=''; 322: 323: this.document.server.submit(); 324: return false; 325: } 326: 327: function enableInput() { 328: this.document.client.elements.upass$now.removeAttribute("readOnly"); 329: this.document.client.elements.uname.removeAttribute("readOnly"); 330: this.document.client.elements.udom.removeAttribute("readOnly"); 331: return; 332: } 333: 334: // ]]> 335: </script> 336: 337: ENDSCRIPT 338: 339: # --------------------------------------------------- Print login screen header 340: 341: my %add_entries = ( 342: bgcolor => "$mainbg", 343: text => "$font", 344: link => "$link", 345: vlink => "$vlink", 346: alink => "$alink", 347: onload => 'javascript:enableInput();',); 348: 349: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 350: { 'redirect' => [$expire,'/adm/roles'], 351: 'add_entries' => \%add_entries, 352: 'only_body' => 1,})); 353: 354: # ----------------------------------------------------------------------- Texts 355: 356: my %lt=&Apache::lonlocal::texthash( 357: 'un' => 'Username', 358: 'pw' => 'Password', 359: 'dom' => 'Domain', 360: 'perc' => 'percent', 361: 'load' => 'Server Load', 362: 'userload' => 'User Load', 363: 'catalog' => 'Course/Community Catalog', 364: 'log' => 'Log in', 365: 'help' => 'Log-in Help', 366: 'serv' => 'Server', 367: 'servadm' => 'Server Administration', 368: 'helpdesk' => 'Contact Helpdesk', 369: 'forgotpw' => 'Forgot password?', 370: 'newuser' => 'New User?', 371: ); 372: # -------------------------------------------------- Change password field name 373: 374: my $forgotpw = &forgotpwdisplay(%lt); 375: $forgotpw .= '<br />' if $forgotpw; 376: my $loginhelp = &loginhelpdisplay($authdomain,%lt); 377: $loginhelp .= '<br />' if $loginhelp; 378: 379: # ---------------------------------------------------- Serve out DES JavaScript 380: { 381: my $jsh=Apache::File->new($include."/londes.js"); 382: $r->print(<$jsh>); 383: } 384: # ---------------------------------------------------------- Serve rest of page 385: 386: $r->print( 387: '<div class="LC_Box"' 388: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 389: ); 390: 391: # 392: # If the loadbalancing yielded just http:// because perhaps there's no loadbalancing? 393: # then just us a relative link to authenticate: 394: # 395: 396: $r->print(<<ENDSERVERFORM); 397: <form name="server" action="/adm/authenticate" method="post" target="_top"> 398: <input type="hidden" name="logtoken" value="$logtoken" /> 399: <input type="hidden" name="serverid" value="$lonhost" /> 400: <input type="hidden" name="uname" value="" /> 401: <input type="hidden" name="upass0" value="" /> 402: <input type="hidden" name="upass1" value="" /> 403: <input type="hidden" name="upass2" value="" /> 404: <input type="hidden" name="udom" value="" /> 405: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 406: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 407: </form> 408: ENDSERVERFORM 409: my $coursecatalog; 410: if (($showcoursecat eq '') || ($showcoursecat)) { 411: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 412: } 413: my $newuserlink; 414: if ($shownewuserlink) { 415: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 416: } 417: my $logintitle = 418: '<h2 class="LC_hcell"' 419: .' style="background:'.$loginbox_header_bgcol.';' 420: .' color:'.$loginbox_header_textcol.'">' 421: .$lt{'log'} 422: .'</h2>'; 423: 424: my $noscript_warning='<noscript><span class="LC_warning"><b>' 425: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 426: .'</b></span></noscript>'; 427: my $helpdeskscript; 428: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 429: $authdomain,\$helpdeskscript); 430: 431: my $loginform=(<<LFORM); 432: <form name="client" action="" onsubmit="return(send())"> 433: <input type="hidden" name="lextkey" value="$lextkey" /> 434: <input type="hidden" name="uextkey" value="$uextkey" /> 435: <b><label for="uname">$lt{'un'}</label>:</b><br /> 436: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" /><br /> 437: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 438: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 439: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 440: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" /><br /> 441: <input type="submit" value="$lt{'log'}" /> 442: </form> 443: LFORM 444: 445: if ($showbanner) { 446: $r->print(<<HEADER); 447:  448: <div style="background:$pgbg;margin:0;width:100%;"> 449: <img src="$img" border="0" alt="The Learning Online Network with CAPA" /> 450: </div> 451: HEADER 452: } 453: $r->print(<<ENDTOP); 454: <div style="float:left;margin-top:0;"> 455: <div class="LC_Box" style="background:$loginbox_bg;"> 456: $logintitle 457: $loginform 458: $noscript_warning 459: </div> 460: 461: <div class="LC_Box" style="padding-top: 10px;"> 462: $loginhelp 463: $forgotpw 464: $contactblock 465: $newuserlink 466: $coursecatalog 467: </div> 468: </div> 469: 470: <div> 471: ENDTOP 472: if ($showmainlogo) { 473: $r->print(' <img src="'.$logo.'" alt="" />'."\n"); 474: } 475: $r->print(<<ENDTOP); 476: $announcements 477: </div> 478: <hr style="clear:both;" /> 479: ENDTOP 480: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 481: $domainrow = <<"END"; 482: <tr> 483: <td align="left" valign="top"> 484: <small><b>$lt{'dom'}: </b></small> 485: </td> 486: <td align="left" valign="top"> 487: <small><tt> $domain</tt></small> 488: </td> 489: </tr> 490: END 491: $serverrow = <<"END"; 492: <tr> 493: <td align="left" valign="top"> 494: <small><b>$lt{'serv'}: </b></small> 495: </td> 496: <td align="left" valign="top"> 497: <small><tt> $lonhost ($role)</tt></small> 498: </td> 499: </tr> 500: END 501: if ($loadlim) { 502: $loadrow = <<"END"; 503: <tr> 504: <td align="left" valign="top"> 505: <small><b>$lt{'load'}: </b></small> 506: </td> 507: <td align="left" valign="top"> 508: <small><tt> $loadpercent $lt{'perc'}</tt></small> 509: </td> 510: </tr> 511: END 512: } 513: if ($uloadlim) { 514: $userloadrow = <<"END"; 515: <tr> 516: <td align="left" valign="top"> 517: <small><b>$lt{'userload'}: </b></small> 518: </td> 519: <td align="left" valign="top"> 520: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 521: </td> 522: </tr> 523: END 524: } 525: if (($version ne '') && ($version ne '')) { 526: $versionrow = <<"END"; 527: <tr> 528: <td colspan="2" align="left"> 529: <small>$version</small> 530: </td> 531: </tr> 532: END 533: } 534: 535: $r->print(<<ENDDOCUMENT); 536: <div style="float: left;"> 537: <table border="0" cellspacing="0" cellpadding="0"> 538: $domainrow 539: $serverrow 540: $loadrow 541: $userloadrow 542: $versionrow 543: </table> 544: </div> 545: <div style="float: right;"> 546: $domainlogo 547: </div> 548: <br style="clear:both;" /> 549: </div> 550: 551: <script type="text/javascript"> 552: // <![CDATA[ 553: // the if prevents the script error if the browser can not handle this 554: if ( document.client.uname ) { document.client.uname.focus(); } 555: // ]]> 556: </script> 557: $helpdeskscript 558: 559: ENDDOCUMENT 560: my %endargs = ( 'noredirectlink' => 1, ); 561: $r->print(&Apache::loncommon::end_page(\%endargs)); 562: return OK; 563: } 564: 565: sub check_loginvia { 566: my ($domain,$lonhost) = @_; 567: if ($domain eq '' || $lonhost eq '') { 568: return; 569: } 570: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 571: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 572: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 573: my $output; 574: if ($loginvia ne '') { 575: my $noredirect; 576: my $ip = $ENV{'REMOTE_ADDR'}; 577: if ($ip eq '127.0.0.1') { 578: $noredirect = 1; 579: } else { 580: if ($loginvia_exempt ne '') { 581: my @exempt = split(',',$loginvia_exempt); 582: if (grep(/^\Q$ip\E$/,@exempt)) { 583: $noredirect = 1; 584: } 585: } 586: } 587: unless ($noredirect) { 588: my ($newhost,$path); 589: if ($loginvia =~ /:/) { 590: ($newhost,$path) = split(':',$loginvia); 591: } else { 592: $newhost = $loginvia; 593: } 594: if ($newhost ne $lonhost) { 595: if (&Apache::lonnet::hostname($newhost) ne '') { 596: $output = &redirect_page($newhost,$path); 597: } 598: } 599: } 600: } 601: return $output; 602: } 603: 604: sub redirect_page { 605: my ($desthost,$path) = @_; 606: my $protocol = $Apache::lonnet::protocol{$desthost}; 607: $protocol = 'http' if ($protocol ne 'https'); 608: unless ($path =~ m{^/}) { 609: $path = '/'.$path; 610: } 611: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path; 612: if ($env{'form.firsturl'} ne '') { 613: $url .='?firsturl='.$env{'form.firsturl'}; 614: } 615: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 616: {'redirect' => [0,$url],}); 617: my $end_page = &Apache::loncommon::end_page(); 618: return $start_page.$end_page; 619: } 620: 621: sub contactdisplay { 622: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript) = @_; 623: my $contactblock; 624: my $showhelpdesk = 0; 625: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 626: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { 627: $showhelpdesk = 1; 628: } 629: if ($servadm && $showadminmail) { 630: $contactblock .= $$lt{'servadm'}.':<br />'. 631: '<tt>'.$servadm.'</tt><br />'; 632: } 633: if ($showhelpdesk) { 634: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 635: my $thisurl = &escape('/adm/login'); 636: $$helpdeskscript = <<"ENDSCRIPT"; 637: <script type="text/javascript"> 638: // <![CDATA[ 639: function helpdesk() { 640: var codedom = document.client.udom.value; 641: if (codedom == '') { 642: codedom = "$authdomain"; 643: } 644: var querystr = "origurl=$thisurl&codedom="+codedom; 645: document.location.href = "/adm/helpdesk?"+querystr; 646: return; 647: } 648: // ]]> 649: </script> 650: ENDSCRIPT 651: } 652: return $contactblock; 653: } 654: 655: sub forgotpwdisplay { 656: my (%lt) = @_; 657: my $prompt_for_resetpw = 1; 658: if ($prompt_for_resetpw) { 659: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 660: } 661: return; 662: } 663: 664: sub loginhelpdisplay { 665: my ($authdomain,%lt) = @_; 666: my $login_help = 1; 667: if ($login_help) { 668: my $dom = $authdomain; 669: if ($dom eq '') { 670: $dom = &Apache::lonnet::default_login_domain(); 671: } 672: my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom); 673: my $loginhelp_url = $helpconfig{'helpsettings'}{'loginhelpurl'}; 674: if ($loginhelp_url ne '') { 675: return '<a href="'.$loginhelp_url.'">'.$lt{'help'}.'</a>'; 676: } else { 677: return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>'; 678: } 679: } 680: return; 681: } 682: 683: sub coursecatalog_link { 684: my ($linkname) = @_; 685: return <<"END"; 686: <a href="/adm/coursecatalog">$linkname</a> 687: END 688: } 689: 690: sub newuser_link { 691: my ($linkname) = @_; 692: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 693: } 694: 695: 1; 696: __END__