modules/relate/lonlogin.pm - view

File: [LON-CAPA] / modules / relate / lonlogin.pm
Revision 1.1: download - view: text, annotated - select for diffs
Tue Feb 7 14:49:47 2012 UTC (12 years, 3 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Customization for MITrelate.
- Custom log-in page incorporating sign-up button for access to
  prerequisite test.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.1 2012/02/07 14:49:47 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: use HTML::Entities(); 42: 43: sub handler { 44: my $r = shift; 45: 46: &Apache::loncommon::get_unprocessed_cgi 47: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, 48: $ENV{'REDIRECT_QUERY_STRING'}), 49: ['username','domain','firsturl','localpath','localres', 50: 'token','role','symb']); 51: if (!defined($env{'form.firsturl'})) { 52: &Apache::lonacc::get_posted_cgi($r,['firsturl']); 53: } 54: $env{'form.firsturl'} =~ s/(`)/'/g; 55: 56: # -- check if they are a migrating user 57: if (defined($env{'form.token'})) { 58: return &Apache::migrateuser::handler($r); 59: } 60: 61: &Apache::loncommon::no_cache($r); 62: &Apache::lonlocal::get_language_handle($r); 63: &Apache::loncommon::content_type($r,'text/html'); 64: $r->send_http_header; 65: return OK if $r->header_only; 66: 67: # --------------------------------------------------------- Are we re-routing? 68: my $londocroot = $r->dir_config('lonDocRoot'); 69: if (-e "$londocroot/lon-status/reroute.txt") { 70: &Apache::lonauth::reroute($r); 71: return OK; 72: } 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 ($handle=~/^publicuser\_/) { 79: # For "public user" - remove it, we apparently really want to login 80: unlink("$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.role'}) { 90: $dest .= '?selectrole=1&'.$env{'form.role'}.'=1'; 91: } 92: if ($env{'form.symb'}) { 93: $dest .= ($dest =~ /\?/) ? '&' : '?'; 94: $dest .= 'destinationurl='. 95: &HTML::Entities::encode($env{'form.symb'},'"&<>'); 96: } 97: if ($env{'form.firsturl'} ne '') { 98: $dest = $env{'form.firsturl'}; 99: } 100: $r->print( 101: $start_page. 102: '<h1>'.&mt('You are already logged in!').'</h1>'. 103: '<p>'. 104: &mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 105: '<a href="'.$dest.'">','</a>', 106: '<a href="/adm/logout">','</a>'). 107: '</p>'. 108: $end_page 109: ); 110: return OK; 111: } 112: } 113: 114: # ---------------------------------------------------- No valid token, continue 115: 116: # ---------------------------- Not possible to really login to domain "public" 117: if ($env{'form.domain'} eq 'public') { 118: $env{'form.domain'}=''; 119: $env{'form.username'}=''; 120: } 121: # ----------------------------------------------------------- Process Interface 122: my $httpbrowser=$ENV{"HTTP_USER_AGENT"}; 123: 124: my $iconpath= 125: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 126: 127: # ---------------------------------------------------------------- 128: 129: my $lonhost = $r->dir_config('lonHostID'); 130: my $domain = &Apache::lonnet::default_login_domain(); 131: if ($lonhost ne '') { 132: my $redirect = &check_loginvia($domain,$lonhost); 133: if ($redirect) { 134: $r->print($redirect); 135: return OK; 136: } 137: } 138: 139: if (($env{'form.domain'}) && 140: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 141: $domain=$env{'form.domain'}; 142: } 143: 144: my $role = $r->dir_config('lonRole'); 145: my $loadlim = $r->dir_config('lonLoadLim'); 146: my $uloadlim= $r->dir_config('lonUserLoadLim'); 147: my $servadm = $r->dir_config('lonAdmEMail'); 148: my $tabdir = $r->dir_config('lonTabDir'); 149: my $include = $r->dir_config('lonIncludes'); 150: my $expire = $r->dir_config('lonExpire'); 151: my $version = $r->dir_config('lonVersion'); 152: my $host_name = &Apache::lonnet::hostname($lonhost); 153: 154: # --------------------------------------------- Default values for login fields 155: 156: my $authusername=($env{'form.username'}?$env{'form.username'}:''); 157: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 158: 159: # ---------------------------------------------------------- Determine own load 160: my $loadavg; 161: { 162: my $loadfile=Apache::File->new('/proc/loadavg'); 163: $loadavg=<$loadfile>; 164: } 165: $loadavg =~ s/\s.*//g; 166: 167: my ($loadpercent,$userloadpercent); 168: if ($loadlim) { 169: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 170: } 171: if ($uloadlim) { 172: $userloadpercent=&Apache::lonnet::userload(); 173: } 174: 175: my $firsturl= 176: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 177: 178: # ----------------------------------------------------------- Get announcements 179: my $announcements=&Apache::lonnet::getannounce(); 180: # -------------------------------------------------------- Set login parameters 181: 182: my @hexstr=('0','1','2','3','4','5','6','7', 183: '8','9','a','b','c','d','e','f'); 184: my $lkey=''; 185: for (0..7) { 186: $lkey.=$hexstr[rand(15)]; 187: } 188: 189: my $ukey=''; 190: for (0..7) { 191: $ukey.=$hexstr[rand(15)]; 192: } 193: 194: my $lextkey=hex($lkey); 195: if ($lextkey>2147483647) { $lextkey-=4294967296; } 196: 197: my $uextkey=hex($ukey); 198: if ($uextkey>2147483647) { $uextkey-=4294967296; } 199: 200: # -------------------------------------------------------- Store away log token 201: my $tokenextras; 202: if ($env{'form.role'}) { 203: $tokenextras = '&role='.&escape($env{'form.role'}); 204: } 205: if ($env{'form.symb'}) { 206: if (!$tokenextras) { 207: $tokenextras = '&'; 208: } 209: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 210: } 211: my $logtoken=Apache::lonnet::reply( 212: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 213: $lonhost); 214: 215: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 216: # we are in serious trouble 217: 218: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 219: if ($logtoken eq 'no_such_host') { 220: &Apache::lonnet::logthis('No valid logtoken for log-in page -- '. 221: 'unable to determine hostname for hostID: '.$lonhost. 222: '. Check entry in hosts.tab'); 223: } 224: my $spares=''; 225: my $last; 226: foreach my $hostid (sort 227: { 228: &Apache::lonnet::hostname($a) cmp 229: &Apache::lonnet::hostname($b); 230: } 231: keys(%Apache::lonnet::spareid)) { 232: next if ($hostid eq $lonhost); 233: my $hostname = &Apache::lonnet::hostname($hostid); 234: next if (($last eq $hostname) || ($hostname eq '')); 235: $spares.='<br /><span style="font-size: larger;"><a href="http://'. 236: $hostname. 237: '/adm/login?domain='.$authdomain.'">'. 238: $hostname.'</a>'. 239: ' '.&mt('(preferred)').'</span>'.$/; 240: $last=$hostname; 241: } 242: if ($spares) { 243: $spares.= '<br />'; 244: } 245: my %all_hostnames = &Apache::lonnet::all_hostnames(); 246: foreach my $hostid (sort 247: { 248: &Apache::lonnet::hostname($a) cmp 249: &Apache::lonnet::hostname($b); 250: } 251: keys(%all_hostnames)) { 252: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 253: my $hostname = &Apache::lonnet::hostname($hostid); 254: next if (($last eq $hostname) || ($hostname eq '')); 255: $spares.='<br /><a href="http://'. 256: $hostname. 257: '/adm/login?domain='.$authdomain.'">'. 258: $hostname.'</a>'; 259: $last=$hostname; 260: } 261: $r->print( 262: '<html>' 263: .'<head><title>' 264: .&mt('The LearningOnline Network with CAPA') 265: .'</title></head>' 266: .'<body bgcolor="#FFFFFF">' 267: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 268: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />' 269: .'<h3>'.&mt("This Learn Physics server is temporarily not available for login.").'</h3>' 270: .'</body>' 271: .'</html>' 272: ); 273: return OK; 274: } 275: 276: # ----------------------------------------------- Apparently we are in business 277: $servadm=~s/\,/\<br \/\>/g; 278: 279: # ----------------------------------------------------------------------- Texts 280: my $pagetitle = 'Learn Physics Login'; # Do not localize. 281: my %lt=&Apache::lonlocal::texthash( 282: 'needu' => 'You must provide a username', 283: 'needp' => 'You must provide a password', 284: 'un' => 'Username', 285: 'pw' => 'Password', 286: 'dom' => 'Domain', 287: 'perc' => 'percent', 288: 'load' => 'Server Load', 289: 'userload' => 'User Load', 290: 'catalog' => 'Course/Community Catalog', 291: 'log' => 'Log-in', 292: 'help' => 'Log-in Help', 293: 'serv' => 'Server', 294: 'servadm' => 'Server Administration', 295: 'helpdesk' => 'Contact Helpdesk', 296: 'forgotpw' => 'Forgot your password?', 297: 'newuser' => 'New User?', 298: 'learn' => 'Learn Physics includes an online physics course, to which you may receive admission after successfully completing a pre-course test.', 299: 'click' => 'Click here to sign up', 300: 'plea' => 'Please log-in', 301: 'supp' => 'Support from NSF, NIH, Google', 302: 'note' => 'Please Note:', 303: 'jscr' => 'Javascript must be enabled in your web browser in order to use this web site.', 304: ); 305: # ----------------------------------------------------------- Front page design 306: my $font=&Apache::loncommon::designparm('login.font',$domain); 307: my $link=&Apache::loncommon::designparm('login.link',$domain); 308: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 309: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 310: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 311: my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 312: 313: my $helpdeskscript; 314: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 315: $authdomain,\$helpdeskscript); 316: 317: # -------------------------------------------------- Change password field name 318: my $now=time; 319: 320: # ---------------------------------------- Assemble Javascript to put in <head> 321: 322: my $js = (<<ENDSCRIPT); 323: 324: <script type="text/javascript" language="JavaScript"> 325: // <![CDATA[ 326: 327: function send(caller) { 328: if (caller == "newaccount") { 329: this.document.signup.submit(); 330: return false; 331: } 332: if (document.client.uname.value == "" || !document.client.uname.value) { 333: alert("$lt{'needu'}"); 334: return false; 335: } 336: if (document.client.upass$now.value == "" || 337: !document.client.upass$now.value) { 338: alert("$lt{'needp'}"); 339: return false; 340: } 341: 342: this.document.server.elements.uname.value 343: =this.document.client.elements.uname.value; 344: 345: this.document.server.elements.udom.value 346: =this.document.client.elements.udom.value; 347: 348: uextkey=this.document.client.elements.uextkey.value; 349: lextkey=this.document.client.elements.lextkey.value; 350: initkeys(); 351: 352: this.document.server.elements.upass0.value 353: =crypted(this.document.client.elements.upass$now.value.substr(0,15)); 354: this.document.server.elements.upass1.value 355: =crypted(this.document.client.elements.upass$now.value.substr(15,15)); 356: this.document.server.elements.upass2.value 357: =crypted(this.document.client.elements.upass$now.value.substr(30,15)); 358: 359: this.document.client.elements.uname.value=''; 360: this.document.client.elements.upass$now.value=''; 361: 362: this.document.server.submit(); 363: return false; 364: } 365: 366: function enableInput() { 367: this.document.client.elements.upass$now.removeAttribute("readOnly"); 368: this.document.client.elements.uname.removeAttribute("readOnly"); 369: this.document.client.elements.udom.removeAttribute("readOnly"); 370: return; 371: } 372: 373: // ]]> 374: </script> 375: 376: $helpdeskscript 377: 378: ENDSCRIPT 379: 380: # --------------------------------------------------- Print login screen header 381: my %add_entries = ( 382: bgcolor => "$mainbg", 383: text => "$font", 384: link => "$link", 385: vlink => "$vlink", 386: alink => "$alink", 387: onload => 'javascript:enableInput();',); 388: 389: my $css_url = "/css/$domain/login.css"; 390: $js .= "\n".'<link type="text/css" rel="stylesheet" href="'.$css_url.'">'."\n"; 391: $r->print(&Apache::loncommon::start_page($pagetitle,$js, 392: {'redirect' => [$expire,'/adm/roles'], 393: 'add_entries' => \%add_entries, 394: 'only_body' => 1,})); 395: 396: # ------------------------------------------------------------ Additional Texts 397: $lt{'newto'} = &mt('New to the [_1]Learn Physics[_2] site?','<i>','</i>'); 398: $lt{'runson'} = &mt('Learn Physics runs on [_1]LON-CAPA[_2] - an open source freeware distributed learning content management and assessment system.', 399: '<a href="http://loncapa.org/">','</a>'); 400: $lt{'newhere'} = &mt('New to [_1]Learn Physics[_2]:','<i>','</i>'); 401: $lt{'exist'} = &mt('Existing [_1]Learn Physics[_2] user','<i>','</i>'); 402: $lt{'browser'} = &mt('Your browser must allow [_1]cookies[_2]', 403: '<a href="http://loncapa.msu.edu/cookies.html" style="color: #ffffff">','</a>'); 404: 405: # -------------------------------------------- Static cid for prerequisite test 406: $prereqcid = 'relate_9615072b469884921relatel1'; 407: 408: # ---------------------------------------------------- Warning if no Javascript 409: my $noscript_warning = '<noscript><span class="LC_warning">'. 410: '<b>'.$lt{'note'}.'</b>'.$lt{'jscr'}.' 411: '</span></noscript>'; 412: 413: # ---------------------------------------------------- Serve out DES JavaScript 414: { 415: my $jsh=Apache::File->new($include."/londes.js"); 416: $r->print(<$jsh>); 417: } 418: # ---------------------------------------------------------- Serve rest of page 419: 420: $r->print(<<"ENDLOGIN"); 421: <br /> 422: <div align="center"> 423: <table class="LC_loginbox"> 424: <tr> 425: <td align="left" valign="top" width="11"> 426: <img src="/images/login/tlc_11_ffffff_e2e2e2.gif" width="10" height="10" border="0" alt=""> 427: </td> 428: <td width="450" valign="top"> 429: <table class="LC_loginbox_left"> 430: <tr> 431: <td width="411" align="left"><br /> 432: <img src="/images/login/LCrelateheader_sm.png" width="411" height="100" alt="Relate @ MIT" align="left"></td> 433: </tr> 434: <tr> 435: <td> 436: <div align="left" style="display:block; margin-top:5px; margin-bottom:5px; margin-left:0px; margin-right:0px; width:440px; height:5px;"> 437: <div class="divider"> 438: </div> 439: </div> 440: </td> 441: </tr> 442: </table> 443: <table class="LC_loginbox_left"> 444: <tr> 445: <td width="10"> </td> 446: <td valign="top" class="bodyred" width="430" align="left"><br /> 447: <span style="font-size: 18px; line-height: 22px; ">$lt{'newt'}</span> 448: <br /> 449: <span class="bodyred">$lt{'learn'}<br /><br />$lt{'runson'} 450: <br /><br /> 451: <form name="signup" method="post" action="/adm/createaccount?courseid=$prereqcid"><input type="hidden" name="process" value="signup"/> 452: <table class="LC_signup"> 453: <tr> 454: <td align="left" valign="top" width="11" height="11"><img src="/images/login/tlc_11_993333_ffffff.gif" width="10" height="10" border="0" alt=""></td> 455: <td> </td> 456: <td align="right" valign="top" width="11" height="11"><img src="/images/login/tr_11_993333_ffffff.gif" width="11" height="11" border="0" alt=""></td> 457: </tr> 458: <tr> 459: <td> </td> 460: <td align="center" valign="middle"><span style="white-space: nowrap;"><b>$lt{'newhere'}</b>: <a href="javascript:send('newaccount')" style="color: #ffffff">$lt{'click'}</a></span></td> 461: <td> </td> 462: </tr> 463: <tr> 464: <td align="left" valign="bottom" width="11" height="11"><img src="/images/login/bl_11_993333_ffffff.gif" width="11" height="11" border="0" alt=""></td> 465: 466: <td> </td> 467: <td align="right" valign="bottom" width="11" height="11"><img src="/images/login/br_11_993333_ffffff.gif" width="11" height="11" border="0" alt=""></td> 468: </tr> 469: </table> 470: </form> 471: </td> 472: </tr> 473: </table> 474: </td> 475: <td width="10"> </td> 476: <td valign="top"> 477: <form name="client" method="post" onsubmit="return(send());"> 478: <table class="LC_loginbox_right"> 479: <tr> 480: <td colspan="3" height="23" class="LC_loginbox_strip"> </td> 481: i </tr> 482: <tr> 483: <td align="left" valign="top" width="11" height="11"><img src="/images/login/tlc_11_993333_ffffff.gif" width="10" height="10" border="0" alt=""></td> 484: <td> </td> 485: <td align="right" valign="top" width="11" height="11"><img src="/images/login/tr_11_993333_ffffff.gif" width="11" height="11" border="0" alt=""></td> 486: </tr> 487: <tr> 488: <td width="10"> </td> 489: <td> 490: <table border="0" cellspacing="0" cellpadding="0"> 491: <tr> 492: <td align="right" class="bodywhite" heighta"=50"><br> 493: <span style="font-size: 15px; line-height: 17px; font-weight: bold;"> 494: $lt{'exist'}</span> 495: <br />$lt{'plea'}<br /> 496: <hr class="login"><br /><br /> 497: </td> 498: </tr> 499: <tr> 500: <td> 501: <table border="0" cellpadding="2" cellspacing="0"> 502: <tr> 503: <td align="right" class="bodywhite"><label for="uname">$lt{'un'}</label>:</td> 504: <td align="right"><input type="text" name="uname" size="17" value="" /></td> 505: </tr> 506: <tr> 507: <td align="right" class="bodywhite"><label for="upass$now">$lt{'pw'}</label>:</td> 508: <td align="right"><input name="upass$now" size="17" value="" type="password"><input type="hidden" name="udom" value="relate" /></td> 509: </tr> 510: <tr><td> </td></tr> 511: <tr> 512: <tr> 513: <td colspan="2" align="right"><input name="signin" type="submit" value="$lt{'log'}" class="buttonwhite" /></td> 514: </tr> 515: </table> 516: </td> 517: </tr> 518: <tr> 519: <td align="right" valign="top" class="bodywhite"> 520: <br /> 521: <br /> 522: <span style="font-size: smaller;">$lt{'browser'}</span><br /> 523: <hr class="login" /> 524: <br /> 525: <a href="/adm/resetpw" style="color: #ffffff">$lt{forgotpw'}</a><br> 526: <br /> 527: </td> 528: </tr> 529: </table> 530: </td> 531: <td width="9"> </td> 532: </tr> 533: <tr> 534: <td align="left" valign="bottom" width="11" height="11"><img src="/images/login/bl_11_993333_ffffff.gif" width="11" height="11" border="0" alt=""></td> 535: <td> </td> 536: 537: <td align="right" valign="bottom" width="11" height="11"><img src="/images/login/br_11_993333_ffffff.gif" width="11" height="11" border="0" alt=""></td> 538: </tr> 539: <tr> 540: <td colspan="3" height="10" class="LC_loginbox_strip"> $contactblock</td> 541: </tr> 542: </table> 543: </td> 544: <td align="right" valign="top" width="11"><img src="/images/login/tr_11_ffffff_e2e2e2.gif" width="11" height="11" border="0" alt=""></td> 545: </tr> 546: <tr> 547: <td colspan="4"> 548: <div align="right"> 549: <img src="/images/login/sponsors.png" alt="$lt{'supp'}" align="right" /> 550: </div> 551: </td> 552: </tr> 553: <tr> 554: <td align="left" valign="bottom" width="11"><img src="/images/login/bl_11_ffffff_e2e2e2.gif" width="11" height="11" border="0" alt=""></td> 555: <td colspan="3" width="698"> </td> 556: <td align="right" valign="bottom" width="11"><img src="/images/login/br_11_ffffff_e2e2e2.gif" width="11" height="11" border="0" alt=""></td> 557: </tr> 558: </table> 559: </div> 560: <p> </p> 561: $noscript_warning 562: <input type="hidden" name="lextkey" value="$lextkey" /> 563: <input type="hidden" name="uextkey" value="$uextkey" /> 564: </form> 565: <form name="server" action="/adm/authenticate" method="post" target="_top"> 566: <input type="hidden" name="logtoken" value="$logtoken" /> 567: <input type="hidden" name="serverid" value="$lonhost" /> 568: <input type="hidden" name="uname" value="" /> 569: <input type="hidden" name="upass0" value="" /> 570: <input type="hidden" name="upass1" value="" /> 571: <input type="hidden" name="upass2" value="" /> 572: <input type="hidden" name="udom" value="" /> 573: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 574: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 575: </form> 576: 577: <script type="text/javascript"> 578: // <![CDATA[ 579: // the if prevents the script error if the browser can not handle this 580: if ( document.client.uname ) { document.client.uname.focus(); } 581: // ]]> 582: </script> 583: 584: ENDLOGIN 585: 586: # -------------------------------------------------------- Standard page ending 587: my %endargs = ( 'noredirectlink' => 1, ); 588: $r->print(&Apache::loncommon::end_page(\%endargs)); 589: return OK; 590: } 591: 592: sub check_loginvia { 593: my ($domain,$lonhost) = @_; 594: if ($domain eq '' || $lonhost eq '') { 595: return; 596: } 597: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 598: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 599: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 600: my $output; 601: if ($loginvia ne '') { 602: my $noredirect; 603: my $ip = $ENV{'REMOTE_ADDR'}; 604: if ($ip eq '127.0.0.1') { 605: $noredirect = 1; 606: } else { 607: if ($loginvia_exempt ne '') { 608: my @exempt = split(',',$loginvia_exempt); 609: if (grep(/^\Q$ip\E$/,@exempt)) { 610: $noredirect = 1; 611: } 612: } 613: } 614: unless ($noredirect) { 615: my ($newhost,$path); 616: if ($loginvia =~ /:/) { 617: ($newhost,$path) = split(':',$loginvia); 618: } else { 619: $newhost = $loginvia; 620: } 621: if ($newhost ne $lonhost) { 622: if (&Apache::lonnet::hostname($newhost) ne '') { 623: $output = &redirect_page($newhost,$path); 624: } 625: } 626: } 627: } 628: return $output; 629: } 630: 631: sub redirect_page { 632: my ($desthost,$path) = @_; 633: my $protocol = $Apache::lonnet::protocol{$desthost}; 634: $protocol = 'http' if ($protocol ne 'https'); 635: unless ($path =~ m{^/}) { 636: $path = '/'.$path; 637: } 638: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path; 639: if ($env{'form.firsturl'} ne '') { 640: $url .='?firsturl='.$env{'form.firsturl'}; 641: } 642: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 643: {'redirect' => [0,$url],}); 644: my $end_page = &Apache::loncommon::end_page(); 645: return $start_page.$end_page; 646: } 647: 648: sub contactdisplay { 649: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript) = @_; 650: return unless(ref($lt) eq 'HASH'); 651: my $contactblock; 652: my $showhelpdesk = 0; 653: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 654: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) { 655: $showhelpdesk = 1; 656: } 657: if ($servadm && $showadminmail) { 658: $contactblock .= $lt->{'servadm'}.':<br />'. 659: '<tt>'.$servadm.'</tt><br />'; 660: } 661: if ($showhelpdesk) { 662: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 663: my $thisurl = &escape('/adm/login'); 664: $$helpdeskscript = <<"ENDSCRIPT"; 665: <script type="text/javascript"> 666: // <![CDATA[ 667: function helpdesk() { 668: var codedom = document.client.udom.value; 669: if (codedom == '') { 670: codedom = "$authdomain"; 671: } 672: var querystr = "origurl=$thisurl&codedom="+codedom; 673: document.location.href = "/adm/helpdesk?"+querystr; 674: return; 675: } 676: // ]]> 677: </script> 678: ENDSCRIPT 679: } 680: return $contactblock; 681: } 682: 683: 1; 684: __END__