loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.176: download - view: text, annotated - select for diffs
Wed Dec 5 03:29:05 2018 UTC (5 years, 6 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Avoid repeated redirects back and forth between balancer and target node
  in corner case.
  - Remove file on balancer with record of node in use when browser lacks
    cookie for the active session on (balanced) node, when log-in page on
    that node is set to redirect.
  - If removal fails, remove the user's session file on the node itself.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.176 2018/12/05 03:29:05 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 qw(:DEFAULT :match); 41: use CGI::Cookie(); 42: 43: sub handler { 44: my $r = shift; 45: 46: &Apache::loncommon::get_unprocessed_cgi 47: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, 48: $ENV{'REDIRECT_QUERY_STRING'}), 49: ['interface','username','domain','firsturl','localpath','localres', 50: 'token','role','symb','iptoken','btoken']); 51: if (!defined($env{'form.firsturl'})) { 52: &Apache::lonacc::get_posted_cgi($r,['firsturl']); 53: } 54: if (!defined($env{'form.firsturl'})) { 55: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) { 56: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'}; 57: } 58: } 59: 60: # -- check if they are a migrating user 61: if (defined($env{'form.token'})) { 62: return &Apache::migrateuser::handler($r); 63: } 64: 65: # For "public user" - remove any exising "public" cookie, as user really wants to log-in 66: my ($handle,$lonidsdir,$expirepub,$userdom); 67: $lonidsdir=$r->dir_config('lonIDsDir'); 68: unless ($r->header_only) { 69: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); 70: if ($handle ne '') { 71: if ($handle=~/^publicuser\_/) { 72: unlink($r->dir_config('lonIDsDir')."/$handle.id"); 73: undef($handle); 74: undef($userdom); 75: $expirepub = 1; 76: } 77: } 78: } 79: 80: &Apache::loncommon::no_cache($r); 81: &Apache::lonlocal::get_language_handle($r); 82: &Apache::loncommon::content_type($r,'text/html'); 83: if ($expirepub) { 84: my $c = new CGI::Cookie(-name => 'lonPubID', 85: -value => '', 86: -expires => '-10y',); 87: $r->header_out('Set-cookie' => $c); 88: } elsif (($handle eq '') && ($userdom ne '')) { 89: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 90: foreach my $name (keys(%cookies)) { 91: next unless ($name =~ /^lon(|S|Link|Pub)ID$/); 92: my $c = new CGI::Cookie(-name => $name, 93: -value => '', 94: -expires => '-10y',); 95: $r->headers_out->add('Set-cookie' => $c); 96: } 97: } 98: $r->send_http_header; 99: return OK if $r->header_only; 100: 101: 102: # Are we re-routing? 103: my $londocroot = $r->dir_config('lonDocRoot'); 104: if (-e "$londocroot/lon-status/reroute.txt") { 105: &Apache::lonauth::reroute($r); 106: return OK; 107: } 108: 109: my $lonhost = $r->dir_config('lonHostID'); 110: $env{'form.firsturl'} =~ s/(`)/'/g; 111: 112: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) 113: 114: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); 115: if ($found_server) { 116: my $hostname = &Apache::lonnet::hostname($found_server); 117: if ($hostname ne '') { 118: my $protocol = $Apache::lonnet::protocol{$found_server}; 119: $protocol = 'http' if ($protocol ne 'https'); 120: my $dest = '/adm/roles'; 121: if ($env{'form.firsturl'} ne '') { 122: $dest = $env{'form.firsturl'}; 123: } 124: my %info = ( 125: balcookie => $lonhost.':'.$balancer_cookie, 126: ); 127: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server); 128: if ($balancer_token) { 129: $dest .= (($dest=~/\?/)?'&;':'?') . 'btoken='.$balancer_token; 130: } 131: my $url = $protocol.'://'.$hostname.$dest; 132: my $start_page = 133: &Apache::loncommon::start_page('Switching Server ...',undef, 134: {'redirect' => [0,$url],}); 135: my $end_page = &Apache::loncommon::end_page(); 136: $r->print($start_page.$end_page); 137: return OK; 138: } 139: } 140: 141: # 142: # Check if a LON-CAPA load balancer sent user here because user's browser sent 143: # it a balancer cookie for an active session on this server. 144: # 145: 146: my $balcookie; 147: if ($env{'form.btoken'}) { 148: my %info = &Apache::lonnet::tmpget($env{'form.btoken'}); 149: $balcookie = $info{'balcookie'}; 150: &Apache::lonnet::tmpdel($env{'form.btoken'}); 151: delete($env{'form.btoken'}); 152: } 153: 154: # 155: # If browser sent an old cookie for which the session file had been removed 156: # check if configuration for user's domain has a portal URL set. If so 157: # switch user's log-in to the portal. 158: # 159: 160: if (($handle eq '') && ($userdom ne '')) { 161: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); 162: if ($domdefaults{'portal_def'} =~ /^https?\:/) { 163: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 164: {'redirect' => [0,$domdefaults{'portal_def'}],}); 165: my $end_page = &Apache::loncommon::end_page(); 166: $r->print($start_page.$end_page); 167: return OK; 168: } 169: } 170: 171: # -------------------------------- Prevent users from attempting to login twice 172: if ($handle ne '') { 173: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 174: my $start_page = 175: &Apache::loncommon::start_page('Already logged in'); 176: my $end_page = 177: &Apache::loncommon::end_page(); 178: my $dest = '/adm/roles'; 179: if ($env{'form.firsturl'} ne '') { 180: $dest = $env{'form.firsturl'}; 181: } 182: $r->print( 183: $start_page 184: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' 185: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 186: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 187: .$end_page 188: ); 189: return OK; 190: } 191: 192: # ---------------------------------------------------- No valid token, continue 193: 194: # ---------------------------- Not possible to really login to domain "public" 195: if ($env{'form.domain'} eq 'public') { 196: $env{'form.domain'}=''; 197: $env{'form.username'}=''; 198: } 199: 200: # ------ Is this page requested because /adm/migrateuser detected an IP change? 201: my %sessiondata; 202: if ($env{'form.iptoken'}) { 203: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); 204: unless ($sessiondata{'sessionserver'}) { 205: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); 206: delete($env{'form.iptoken'}); 207: } 208: } 209: # ----------------------------------------------------------- Process Interface 210: $env{'form.interface'}=~s/\W//g; 211: 212: (undef,undef,undef,undef,undef,undef,my $clientmobile) = 213: &Apache::loncommon::decode_user_agent(); 214: 215: my $iconpath= 216: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 217: 218: my $domain = &Apache::lonnet::default_login_domain(); 219: my $defdom = $domain; 220: if ($lonhost ne '') { 221: unless ($sessiondata{'sessionserver'}) { 222: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie); 223: if ($redirect) { 224: $r->print($redirect); 225: return OK; 226: } 227: } 228: } 229: 230: if (($sessiondata{'domain'}) && 231: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) { 232: $domain=$sessiondata{'domain'}; 233: } elsif (($env{'form.domain'}) && 234: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 235: $domain=$env{'form.domain'}; 236: } 237: 238: my $role = $r->dir_config('lonRole'); 239: my $loadlim = $r->dir_config('lonLoadLim'); 240: my $uloadlim= $r->dir_config('lonUserLoadLim'); 241: my $servadm = $r->dir_config('lonAdmEMail'); 242: my $tabdir = $r->dir_config('lonTabDir'); 243: my $include = $r->dir_config('lonIncludes'); 244: my $expire = $r->dir_config('lonExpire'); 245: my $version = $r->dir_config('lonVersion'); 246: my $host_name = &Apache::lonnet::hostname($lonhost); 247: 248: # --------------------------------------------- Default values for login fields 249: 250: my ($authusername,$authdomain); 251: if ($sessiondata{'username'}) { 252: $authusername=$sessiondata{'username'}; 253: } else { 254: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); 255: $authusername=($env{'form.username'}?$env{'form.username'}:''); 256: } 257: if ($sessiondata{'domain'}) { 258: $authdomain=$sessiondata{'domain'}; 259: } else { 260: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); 261: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 262: } 263: 264: # ---------------------------------------------------------- Determine own load 265: my $loadavg; 266: { 267: my $loadfile=Apache::File->new('/proc/loadavg'); 268: $loadavg=<$loadfile>; 269: } 270: $loadavg =~ s/\s.*//g; 271: 272: my ($loadpercent,$userloadpercent); 273: if ($loadlim) { 274: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 275: } 276: if ($uloadlim) { 277: $userloadpercent=&Apache::lonnet::userload(); 278: } 279: 280: my $firsturl= 281: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 282: 283: # ----------------------------------------------------------- Get announcements 284: my $announcements=&Apache::lonnet::getannounce(); 285: # -------------------------------------------------------- Set login parameters 286: 287: my @hexstr=('0','1','2','3','4','5','6','7', 288: '8','9','a','b','c','d','e','f'); 289: my $lkey=''; 290: for (0..7) { 291: $lkey.=$hexstr[rand(15)]; 292: } 293: 294: my $ukey=''; 295: for (0..7) { 296: $ukey.=$hexstr[rand(15)]; 297: } 298: 299: my $lextkey=hex($lkey); 300: if ($lextkey>2147483647) { $lextkey-=4294967296; } 301: 302: my $uextkey=hex($ukey); 303: if ($uextkey>2147483647) { $uextkey-=4294967296; } 304: 305: # -------------------------------------------------------- Store away log token 306: my $tokenextras; 307: if ($env{'form.role'}) { 308: $tokenextras = '&role='.&escape($env{'form.role'}); 309: } 310: if ($env{'form.symb'}) { 311: if (!$tokenextras) { 312: $tokenextras = '&'; 313: } 314: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 315: } 316: if ($env{'form.iptoken'}) { 317: if (!$tokenextras) { 318: $tokenextras = '&&'; 319: } 320: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); 321: } 322: my $logtoken=Apache::lonnet::reply( 323: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 324: $lonhost); 325: 326: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 327: # we are in serious trouble 328: 329: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 330: if ($logtoken eq 'no_such_host') { 331: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 332: } 333: my $spares=''; 334: my $last; 335: foreach my $hostid (sort 336: { 337: &Apache::lonnet::hostname($a) cmp 338: &Apache::lonnet::hostname($b); 339: } 340: keys(%Apache::lonnet::spareid)) { 341: next if ($hostid eq $lonhost); 342: my $hostname = &Apache::lonnet::hostname($hostid); 343: next if (($last eq $hostname) || ($hostname eq '')); 344: $spares.='<br /><font size="+1"><a href="http://'. 345: $hostname. 346: '/adm/login?domain='.$authdomain.'">'. 347: $hostname.'</a>'. 348: ' '.&mt('(preferred)').'</font>'.$/; 349: $last=$hostname; 350: } 351: if ($spares) { 352: $spares.= '<br />'; 353: } 354: my %all_hostnames = &Apache::lonnet::all_hostnames(); 355: foreach my $hostid (sort 356: { 357: &Apache::lonnet::hostname($a) cmp 358: &Apache::lonnet::hostname($b); 359: } 360: keys(%all_hostnames)) { 361: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 362: my $hostname = &Apache::lonnet::hostname($hostid); 363: next if (($last eq $hostname) || ($hostname eq '')); 364: $spares.='<br /><a href="http://'. 365: $hostname. 366: '/adm/login?domain='.$authdomain.'">'. 367: $hostname.'</a>'; 368: $last=$hostname; 369: } 370: $r->print( 371: '<html>' 372: .'<head><title>' 373: .&mt('The LearningOnline Network with CAPA') 374: .'</title></head>' 375: .'<body bgcolor="#FFFFFF">' 376: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 377: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />' 378: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 379: if ($spares) { 380: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 381: .'</p>' 382: .$spares); 383: } 384: $r->print('</body>' 385: .'</html>' 386: ); 387: return OK; 388: } 389: 390: # ----------------------------------------------- Apparently we are in business 391: $servadm=~s/\,/\<br \/\>/g; 392: 393: # ----------------------------------------------------------- Front page design 394: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 395: my $font=&Apache::loncommon::designparm('login.font',$domain); 396: my $link=&Apache::loncommon::designparm('login.link',$domain); 397: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 398: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 399: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 400: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 401: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 402: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 403: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 404: my $img=&Apache::loncommon::designparm('login.img',$domain); 405: my $domainlogo=&Apache::loncommon::domainlogo($domain); 406: my $showbanner = 1; 407: my $showmainlogo = 1; 408: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 409: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 410: } 411: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 412: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 413: } 414: my $showadminmail; 415: my @possdoms = &Apache::lonnet::current_machine_domains(); 416: if (grep(/^\Q$domain\E$/,@possdoms)) { 417: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 418: } 419: my $showcoursecat = 420: &Apache::loncommon::designparm('login.coursecatalog',$domain); 421: my $shownewuserlink = 422: &Apache::loncommon::designparm('login.newuser',$domain); 423: my $showhelpdesk = 424: &Apache::loncommon::designparm('login.helpdesk',$domain); 425: my $now=time; 426: my $js = (<<ENDSCRIPT); 427: 428: <script type="text/javascript" language="JavaScript"> 429: // <![CDATA[ 430: function send() 431: { 432: this.document.server.elements.uname.value 433: =this.document.client.elements.uname.value; 434: 435: this.document.server.elements.udom.value 436: =this.document.client.elements.udom.value; 437: 438: uextkey=this.document.client.elements.uextkey.value; 439: lextkey=this.document.client.elements.lextkey.value; 440: initkeys(); 441: 442: if(this.document.server.action.substr(0,5) === 'http:'){ 443: this.document.server.elements.upass0.value 444: =getCrypted(this.document.client.elements.upass$now.value); 445: } else { 446: this.document.server.elements.upass0.value 447: =this.document.client.elements.upass$now.value; 448: } 449: 450: this.document.client.elements.uname.value=''; 451: this.document.client.elements.upass$now.value=''; 452: 453: this.document.server.submit(); 454: return false; 455: } 456: 457: function enableInput() { 458: this.document.client.elements.upass$now.removeAttribute("readOnly"); 459: this.document.client.elements.uname.removeAttribute("readOnly"); 460: this.document.client.elements.udom.removeAttribute("readOnly"); 461: return; 462: } 463: 464: // ]]> 465: </script> 466: 467: ENDSCRIPT 468: 469: # --------------------------------------------------- Print login screen header 470: 471: my %add_entries = ( 472: bgcolor => "$mainbg", 473: text => "$font", 474: link => "$link", 475: vlink => "$vlink", 476: alink => "$alink", 477: onload => 'javascript:enableInput();',); 478: 479: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf); 480: @hosts = &Apache::lonnet::current_machine_ids(); 481: $lonhost_in_use = $lonhost; 482: if (@hosts > 1) { 483: foreach my $hostid (@hosts) { 484: if (&Apache::lonnet::host_domain($hostid) eq $defdom) { 485: $lonhost_in_use = $hostid; 486: last; 487: } 488: } 489: } 490: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); 491: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; 492: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; 493: if ($headextra) { 494: my $omitextra; 495: if ($headextra_exempt ne '') { 496: my @exempt = split(',',$headextra_exempt); 497: my $ip = $ENV{'REMOTE_ADDR'}; 498: if (grep(/^\Q$ip\E$/,@exempt)) { 499: $omitextra = 1; 500: } 501: } 502: unless ($omitextra) { 503: my $confname = $defdom.'-domainconfig'; 504: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) { 505: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra)); 506: unless ($extra eq '-1') { 507: $js .= "\n".$extra."\n"; 508: } 509: } 510: } 511: } 512: 513: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 514: { 'redirect' => [$expire,'/adm/roles'], 515: 'add_entries' => \%add_entries, 516: 'only_body' => 1,})); 517: 518: # ----------------------------------------------------------------------- Texts 519: 520: my %lt=&Apache::lonlocal::texthash( 521: 'un' => 'Username', 522: 'pw' => 'Password', 523: 'dom' => 'Domain', 524: 'perc' => 'percent', 525: 'load' => 'Server Load', 526: 'userload' => 'User Load', 527: 'catalog' => 'Course/Community Catalog', 528: 'log' => 'Log in', 529: 'help' => 'Log-in Help', 530: 'serv' => 'Server', 531: 'servadm' => 'Server Administration', 532: 'helpdesk' => 'Contact Helpdesk', 533: 'forgotpw' => 'Forgot password?', 534: 'newuser' => 'New User?', 535: ); 536: # -------------------------------------------------- Change password field name 537: 538: my $forgotpw = &forgotpwdisplay(%lt); 539: $forgotpw .= '<br />' if $forgotpw; 540: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); 541: if ($loginhelp) { 542: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />'; 543: } 544: 545: # ---------------------------------------------------- Serve out DES JavaScript 546: { 547: my $jsh=Apache::File->new($include."/londes.js"); 548: $r->print(<$jsh>); 549: } 550: # ---------------------------------------------------------- Serve rest of page 551: 552: $r->print( 553: '<div class="LC_Box"' 554: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 555: ); 556: 557: $r->print(<<ENDSERVERFORM); 558: <form name="server" action="/adm/authenticate" method="post" target="_top"> 559: <input type="hidden" name="logtoken" value="$logtoken" /> 560: <input type="hidden" name="serverid" value="$lonhost" /> 561: <input type="hidden" name="uname" value="" /> 562: <input type="hidden" name="upass0" value="" /> 563: <input type="hidden" name="udom" value="" /> 564: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 565: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 566: </form> 567: ENDSERVERFORM 568: my $coursecatalog; 569: if (($showcoursecat eq '') || ($showcoursecat)) { 570: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 571: } 572: my $newuserlink; 573: if ($shownewuserlink) { 574: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 575: } 576: my $logintitle = 577: '<h2 class="LC_hcell"' 578: .' style="background:'.$loginbox_header_bgcol.';' 579: .' color:'.$loginbox_header_textcol.'">' 580: .$lt{'log'} 581: .'</h2>'; 582: 583: my $noscript_warning='<noscript><span class="LC_warning"><b>' 584: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 585: .'</b></span></noscript>'; 586: my $helpdeskscript; 587: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 588: $authdomain,\$helpdeskscript, 589: $showhelpdesk,\@possdoms); 590: 591: my $mobileargs; 592: if ($clientmobile) { 593: $mobileargs = 'autocapitalize="off" autocorrect="off"'; 594: } 595: my $loginform=(<<LFORM); 596: <form name="client" action="" onsubmit="return(send())"> 597: <input type="hidden" name="lextkey" value="$lextkey" /> 598: <input type="hidden" name="uextkey" value="$uextkey" /> 599: <b><label for="uname">$lt{'un'}</label>:</b><br /> 600: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br /> 601: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 602: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 603: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 604: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br /> 605: <input type="submit" value="$lt{'log'}" /> 606: </form> 607: LFORM 608: 609: if ($showbanner) { 610: $r->print(<<HEADER); 611:  612: <div style="background:$pgbg;margin:0;width:100%;"> 613: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" /> 614: </div> 615: HEADER 616: } 617: $r->print(<<ENDTOP); 618: <div style="float:left;margin-top:0;"> 619: <div class="LC_Box" style="background:$loginbox_bg;"> 620: $logintitle 621: $loginform 622: $noscript_warning 623: </div> 624: 625: <div class="LC_Box" style="padding-top: 10px;"> 626: $loginhelp 627: $forgotpw 628: $contactblock 629: $newuserlink 630: $coursecatalog 631: </div> 632: </div> 633: 634: <div> 635: ENDTOP 636: if ($showmainlogo) { 637: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n"); 638: } 639: $r->print(<<ENDTOP); 640: $announcements 641: </div> 642: <hr style="clear:both;" /> 643: ENDTOP 644: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 645: $domainrow = <<"END"; 646: <tr> 647: <td align="left" valign="top"> 648: <small><b>$lt{'dom'}: </b></small> 649: </td> 650: <td align="left" valign="top"> 651: <small><tt> $domain</tt></small> 652: </td> 653: </tr> 654: END 655: $serverrow = <<"END"; 656: <tr> 657: <td align="left" valign="top"> 658: <small><b>$lt{'serv'}: </b></small> 659: </td> 660: <td align="left" valign="top"> 661: <small><tt> $lonhost ($role)</tt></small> 662: </td> 663: </tr> 664: END 665: if ($loadlim) { 666: $loadrow = <<"END"; 667: <tr> 668: <td align="left" valign="top"> 669: <small><b>$lt{'load'}: </b></small> 670: </td> 671: <td align="left" valign="top"> 672: <small><tt> $loadpercent $lt{'perc'}</tt></small> 673: </td> 674: </tr> 675: END 676: } 677: if ($uloadlim) { 678: $userloadrow = <<"END"; 679: <tr> 680: <td align="left" valign="top"> 681: <small><b>$lt{'userload'}: </b></small> 682: </td> 683: <td align="left" valign="top"> 684: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 685: </td> 686: </tr> 687: END 688: } 689: if (($version ne '') && ($version ne '')) { 690: $versionrow = <<"END"; 691: <tr> 692: <td colspan="2" align="left"> 693: <small>$version</small> 694: </td> 695: </tr> 696: END 697: } 698: 699: $r->print(<<ENDDOCUMENT); 700: <div style="float: left;"> 701: <table border="0" cellspacing="0" cellpadding="0"> 702: $domainrow 703: $serverrow 704: $loadrow 705: $userloadrow 706: $versionrow 707: </table> 708: </div> 709: <div style="float: right;"> 710: $domainlogo 711: </div> 712: <br style="clear:both;" /> 713: </div> 714: 715: <script type="text/javascript"> 716: // <![CDATA[ 717: // the if prevents the script error if the browser can not handle this 718: if ( document.client.uname ) { document.client.uname.focus(); } 719: // ]]> 720: </script> 721: $helpdeskscript 722: 723: ENDDOCUMENT 724: my %endargs = ( 'noredirectlink' => 1, ); 725: $r->print(&Apache::loncommon::end_page(\%endargs)); 726: return OK; 727: } 728: 729: sub check_loginvia { 730: my ($domain,$lonhost,$lonidsdir,$balcookie) = @_; 731: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') { 732: return; 733: } 734: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 735: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 736: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 737: my $output; 738: if ($loginvia ne '') { 739: my $noredirect; 740: my $ip = $ENV{'REMOTE_ADDR'}; 741: if ($ip eq '127.0.0.1') { 742: $noredirect = 1; 743: } else { 744: if ($loginvia_exempt ne '') { 745: my @exempt = split(',',$loginvia_exempt); 746: if (grep(/^\Q$ip\E$/,@exempt)) { 747: $noredirect = 1; 748: } 749: } 750: } 751: unless ($noredirect) { 752: my ($newhost,$path); 753: if ($loginvia =~ /:/) { 754: ($newhost,$path) = split(':',$loginvia); 755: } else { 756: $newhost = $loginvia; 757: } 758: if ($newhost ne $lonhost) { 759: if (&Apache::lonnet::hostname($newhost) ne '') { 760: if ($balcookie) { 761: my ($balancer,$cookie) = split(/:/,$balcookie); 762: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) { 763: my ($udom,$uname,$cookieid) = ($1,$2,$3); 764: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') { 765: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) { 766: while (my $filename=readdir($dh)) { 767: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) { 768: my $handle = $1; 769: my %hash = 770: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir, 771: ['request.balancercookie', 772: 'user.linkedenv']); 773: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") { 774: if (unlink("$lonidsdir/$filename")) { 775: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && 776: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") && 777: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) { 778: unlink("$lonidsdir/$hash{'user.linkedenv'}.id"); 779: } 780: } 781: } 782: last; 783: } 784: } 785: closedir($dh); 786: } 787: } 788: } 789: } 790: $output = &redirect_page($newhost,$path); 791: } 792: } 793: } 794: } 795: return $output; 796: } 797: 798: sub redirect_page { 799: my ($desthost,$path) = @_; 800: my $protocol = $Apache::lonnet::protocol{$desthost}; 801: $protocol = 'http' if ($protocol ne 'https'); 802: unless ($path =~ m{^/}) { 803: $path = '/'.$path; 804: } 805: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path; 806: if ($env{'form.firsturl'} ne '') { 807: $url .='?firsturl='.$env{'form.firsturl'}; 808: } 809: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 810: {'redirect' => [0,$url],}); 811: my $end_page = &Apache::loncommon::end_page(); 812: return $start_page.$end_page; 813: } 814: 815: sub contactdisplay { 816: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, 817: $possdoms) = @_; 818: my $contactblock; 819: my $origmail; 820: if (ref($possdoms) eq 'ARRAY') { 821: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { 822: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 823: } 824: } 825: my $requestmail = 826: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 827: $authdomain,$origmail); 828: unless ($showhelpdesk eq '0') { 829: if ($requestmail =~ m/[^\@]+\@[^\@]+/) { 830: $showhelpdesk = 1; 831: } else { 832: $showhelpdesk = 0; 833: } 834: } 835: if ($servadm && $showadminmail) { 836: $contactblock .= $$lt{'servadm'}.':<br />'. 837: '<tt>'.$servadm.'</tt><br />'; 838: } 839: if ($showhelpdesk) { 840: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 841: my $thisurl = &escape('/adm/login'); 842: $$helpdeskscript = <<"ENDSCRIPT"; 843: <script type="text/javascript"> 844: // <![CDATA[ 845: function helpdesk() { 846: var possdom = document.client.udom.value; 847: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),''); 848: if (codedom == '') { 849: codedom = "$authdomain"; 850: } 851: var querystr = "origurl=$thisurl&codedom="+codedom; 852: document.location.href = "/adm/helpdesk?"+querystr; 853: return; 854: } 855: // ]]> 856: </script> 857: ENDSCRIPT 858: } 859: return $contactblock; 860: } 861: 862: sub forgotpwdisplay { 863: my (%lt) = @_; 864: my $prompt_for_resetpw = 1; 865: if ($prompt_for_resetpw) { 866: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 867: } 868: return; 869: } 870: 871: sub coursecatalog_link { 872: my ($linkname) = @_; 873: return <<"END"; 874: <a href="/adm/coursecatalog">$linkname</a> 875: END 876: } 877: 878: sub newuser_link { 879: my ($linkname) = @_; 880: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 881: } 882: 883: 1; 884: __END__