loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.174: download - view: text, annotated - select for diffs
Sat Nov 24 16:19:04 2018 UTC (5 years, 6 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Domain config for load balancer to use cookie to record offload target.
  Subsequent requests by same user/browser will send requests to same target
  if remote session still active, and remote node not overloaded.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.174 2018/11/24 16:19:04 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 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: $ENV{'REDIRECT_QUERY_STRING'}), 49: ['interface','username','domain','firsturl','localpath','localres', 50: 'token','role','symb','iptoken']); 51: if (!defined($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,$userdom); 67: unless ($r->header_only) { 68: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); 69: if ($handle ne '') { 70: $lonidsdir=$r->dir_config('lonIDsDir'); 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: $env{'form.firsturl'} =~ s/(`)/'/g; 110: 111: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) 112: 113: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); 114: if ($found_server) { 115: my $hostname = &Apache::lonnet::hostname($found_server); 116: if ($hostname ne '') { 117: my $protocol = $Apache::lonnet::protocol{$found_server}; 118: $protocol = 'http' if ($protocol ne 'https'); 119: my $dest = '/adm/roles'; 120: if ($env{'form.firsturl'} ne '') { 121: $dest = $env{'form.firsturl'}; 122: } 123: my $url = $protocol.'://'.$hostname.$dest; 124: my $start_page = 125: &Apache::loncommon::start_page('Switching Server ...',undef, 126: {'redirect' => [0,$url],}); 127: my $end_page = &Apache::loncommon::end_page(); 128: $r->print($start_page.$end_page); 129: return OK; 130: } 131: } 132: 133: # 134: # If browser sent an old cookie for which the session file had been removed 135: # check if configuration for user's domain has a portal URL set. If so 136: # switch user's log-in to the portal. 137: # 138: 139: if (($handle eq '') && ($userdom ne '')) { 140: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); 141: if ($domdefaults{'portal_def'} =~ /^https?\:/) { 142: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 143: {'redirect' => [0,$domdefaults{'portal_def'}],}); 144: my $end_page = &Apache::loncommon::end_page(); 145: $r->print($start_page.$end_page); 146: return OK; 147: } 148: } 149: 150: # -------------------------------- Prevent users from attempting to login twice 151: if ($handle ne '') { 152: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 153: my $start_page = 154: &Apache::loncommon::start_page('Already logged in'); 155: my $end_page = 156: &Apache::loncommon::end_page(); 157: my $dest = '/adm/roles'; 158: if ($env{'form.firsturl'} ne '') { 159: $dest = $env{'form.firsturl'}; 160: } 161: $r->print( 162: $start_page 163: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' 164: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 165: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 166: .$end_page 167: ); 168: return OK; 169: } 170: 171: # ---------------------------------------------------- No valid token, continue 172: 173: # ---------------------------- Not possible to really login to domain "public" 174: if ($env{'form.domain'} eq 'public') { 175: $env{'form.domain'}=''; 176: $env{'form.username'}=''; 177: } 178: 179: # ------ Is this page requested because /adm/migrateuser detected an IP change? 180: my %sessiondata; 181: if ($env{'form.iptoken'}) { 182: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); 183: unless ($sessiondata{'sessionserver'}) { 184: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); 185: delete($env{'form.iptoken'}); 186: } 187: } 188: # ----------------------------------------------------------- Process Interface 189: $env{'form.interface'}=~s/\W//g; 190: 191: (undef,undef,undef,undef,undef,undef,my $clientmobile) = 192: &Apache::loncommon::decode_user_agent(); 193: 194: my $iconpath= 195: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 196: 197: my $lonhost = $r->dir_config('lonHostID'); 198: my $domain = &Apache::lonnet::default_login_domain(); 199: my $defdom = $domain; 200: if ($lonhost ne '') { 201: unless ($sessiondata{'sessionserver'}) { 202: my $redirect = &check_loginvia($domain,$lonhost); 203: if ($redirect) { 204: $r->print($redirect); 205: return OK; 206: } 207: } 208: } 209: 210: if (($sessiondata{'domain'}) && 211: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 212: $domain=$sessiondata{'domain'}; 213: } elsif (($env{'form.domain'}) && 214: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 215: $domain=$env{'form.domain'}; 216: } 217: 218: my $role = $r->dir_config('lonRole'); 219: my $loadlim = $r->dir_config('lonLoadLim'); 220: my $uloadlim= $r->dir_config('lonUserLoadLim'); 221: my $servadm = $r->dir_config('lonAdmEMail'); 222: my $tabdir = $r->dir_config('lonTabDir'); 223: my $include = $r->dir_config('lonIncludes'); 224: my $expire = $r->dir_config('lonExpire'); 225: my $version = $r->dir_config('lonVersion'); 226: my $host_name = &Apache::lonnet::hostname($lonhost); 227: 228: # --------------------------------------------- Default values for login fields 229: 230: my ($authusername,$authdomain); 231: if ($sessiondata{'username'}) { 232: $authusername=$sessiondata{'username'}; 233: } else { 234: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); 235: $authusername=($env{'form.username'}?$env{'form.username'}:''); 236: } 237: if ($sessiondata{'domain'}) { 238: $authdomain=$sessiondata{'domain'}; 239: } else { 240: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); 241: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 242: } 243: 244: # ---------------------------------------------------------- Determine own load 245: my $loadavg; 246: { 247: my $loadfile=Apache::File->new('/proc/loadavg'); 248: $loadavg=<$loadfile>; 249: } 250: $loadavg =~ s/\s.*//g; 251: 252: my ($loadpercent,$userloadpercent); 253: if ($loadlim) { 254: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 255: } 256: if ($uloadlim) { 257: $userloadpercent=&Apache::lonnet::userload(); 258: } 259: 260: my $firsturl= 261: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 262: 263: # ----------------------------------------------------------- Get announcements 264: my $announcements=&Apache::lonnet::getannounce(); 265: # -------------------------------------------------------- Set login parameters 266: 267: my @hexstr=('0','1','2','3','4','5','6','7', 268: '8','9','a','b','c','d','e','f'); 269: my $lkey=''; 270: for (0..7) { 271: $lkey.=$hexstr[rand(15)]; 272: } 273: 274: my $ukey=''; 275: for (0..7) { 276: $ukey.=$hexstr[rand(15)]; 277: } 278: 279: my $lextkey=hex($lkey); 280: if ($lextkey>2147483647) { $lextkey-=4294967296; } 281: 282: my $uextkey=hex($ukey); 283: if ($uextkey>2147483647) { $uextkey-=4294967296; } 284: 285: # -------------------------------------------------------- Store away log token 286: my $tokenextras; 287: if ($env{'form.role'}) { 288: $tokenextras = '&role='.&escape($env{'form.role'}); 289: } 290: if ($env{'form.symb'}) { 291: if (!$tokenextras) { 292: $tokenextras = '&'; 293: } 294: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 295: } 296: if ($env{'form.iptoken'}) { 297: if (!$tokenextras) { 298: $tokenextras = '&&'; 299: } 300: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); 301: } 302: my $logtoken=Apache::lonnet::reply( 303: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 304: $lonhost); 305: 306: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 307: # we are in serious trouble 308: 309: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 310: if ($logtoken eq 'no_such_host') { 311: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 312: } 313: my $spares=''; 314: my $last; 315: foreach my $hostid (sort 316: { 317: &Apache::lonnet::hostname($a) cmp 318: &Apache::lonnet::hostname($b); 319: } 320: keys(%Apache::lonnet::spareid)) { 321: next if ($hostid eq $lonhost); 322: my $hostname = &Apache::lonnet::hostname($hostid); 323: next if (($last eq $hostname) || ($hostname eq '')); 324: $spares.='<br /><font size="+1"><a href="http://'. 325: $hostname. 326: '/adm/login?domain='.$authdomain.'">'. 327: $hostname.'</a>'. 328: ' '.&mt('(preferred)').'</font>'.$/; 329: $last=$hostname; 330: } 331: if ($spares) { 332: $spares.= '<br />'; 333: } 334: my %all_hostnames = &Apache::lonnet::all_hostnames(); 335: foreach my $hostid (sort 336: { 337: &Apache::lonnet::hostname($a) cmp 338: &Apache::lonnet::hostname($b); 339: } 340: keys(%all_hostnames)) { 341: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid}); 342: my $hostname = &Apache::lonnet::hostname($hostid); 343: next if (($last eq $hostname) || ($hostname eq '')); 344: $spares.='<br /><a href="http://'. 345: $hostname. 346: '/adm/login?domain='.$authdomain.'">'. 347: $hostname.'</a>'; 348: $last=$hostname; 349: } 350: $r->print( 351: '<html>' 352: .'<head><title>' 353: .&mt('The LearningOnline Network with CAPA') 354: .'</title></head>' 355: .'<body bgcolor="#FFFFFF">' 356: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 357: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />' 358: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 359: if ($spares) { 360: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 361: .'</p>' 362: .$spares); 363: } 364: $r->print('</body>' 365: .'</html>' 366: ); 367: return OK; 368: } 369: 370: # ----------------------------------------------- Apparently we are in business 371: $servadm=~s/\,/\<br \/\>/g; 372: 373: # ----------------------------------------------------------- Front page design 374: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 375: my $font=&Apache::loncommon::designparm('login.font',$domain); 376: my $link=&Apache::loncommon::designparm('login.link',$domain); 377: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 378: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 379: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 380: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 381: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 382: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 383: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 384: my $img=&Apache::loncommon::designparm('login.img',$domain); 385: my $domainlogo=&Apache::loncommon::domainlogo($domain); 386: my $showbanner = 1; 387: my $showmainlogo = 1; 388: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 389: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 390: } 391: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 392: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 393: } 394: my $showadminmail; 395: my @possdoms = &Apache::lonnet::current_machine_domains(); 396: if (grep(/^\Q$domain\E$/,@possdoms)) { 397: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 398: } 399: my $showcoursecat = 400: &Apache::loncommon::designparm('login.coursecatalog',$domain); 401: my $shownewuserlink = 402: &Apache::loncommon::designparm('login.newuser',$domain); 403: my $showhelpdesk = 404: &Apache::loncommon::designparm('login.helpdesk',$domain); 405: my $now=time; 406: my $js = (<<ENDSCRIPT); 407: 408: <script type="text/javascript" language="JavaScript"> 409: // <![CDATA[ 410: function send() 411: { 412: this.document.server.elements.uname.value 413: =this.document.client.elements.uname.value; 414: 415: this.document.server.elements.udom.value 416: =this.document.client.elements.udom.value; 417: 418: uextkey=this.document.client.elements.uextkey.value; 419: lextkey=this.document.client.elements.lextkey.value; 420: initkeys(); 421: 422: if(this.document.server.action.substr(0,5) === 'http:'){ 423: this.document.server.elements.upass0.value 424: =getCrypted(this.document.client.elements.upass$now.value); 425: } else { 426: this.document.server.elements.upass0.value 427: =this.document.client.elements.upass$now.value; 428: } 429: 430: this.document.client.elements.uname.value=''; 431: this.document.client.elements.upass$now.value=''; 432: 433: this.document.server.submit(); 434: return false; 435: } 436: 437: function enableInput() { 438: this.document.client.elements.upass$now.removeAttribute("readOnly"); 439: this.document.client.elements.uname.removeAttribute("readOnly"); 440: this.document.client.elements.udom.removeAttribute("readOnly"); 441: return; 442: } 443: 444: // ]]> 445: </script> 446: 447: ENDSCRIPT 448: 449: # --------------------------------------------------- Print login screen header 450: 451: my %add_entries = ( 452: bgcolor => "$mainbg", 453: text => "$font", 454: link => "$link", 455: vlink => "$vlink", 456: alink => "$alink", 457: onload => 'javascript:enableInput();',); 458: 459: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf); 460: @hosts = &Apache::lonnet::current_machine_ids(); 461: $lonhost_in_use = $lonhost; 462: if (@hosts > 1) { 463: foreach my $hostid (@hosts) { 464: if (&Apache::lonnet::host_domain($hostid) eq $defdom) { 465: $lonhost_in_use = $hostid; 466: last; 467: } 468: } 469: } 470: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); 471: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; 472: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; 473: if ($headextra) { 474: my $omitextra; 475: if ($headextra_exempt ne '') { 476: my @exempt = split(',',$headextra_exempt); 477: my $ip = $ENV{'REMOTE_ADDR'}; 478: if (grep(/^\Q$ip\E$/,@exempt)) { 479: $omitextra = 1; 480: } 481: } 482: unless ($omitextra) { 483: my $confname = $defdom.'-domainconfig'; 484: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) { 485: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra)); 486: unless ($extra eq '-1') { 487: $js .= "\n".$extra."\n"; 488: } 489: } 490: } 491: } 492: 493: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 494: { 'redirect' => [$expire,'/adm/roles'], 495: 'add_entries' => \%add_entries, 496: 'only_body' => 1,})); 497: 498: # ----------------------------------------------------------------------- Texts 499: 500: my %lt=&Apache::lonlocal::texthash( 501: 'un' => 'Username', 502: 'pw' => 'Password', 503: 'dom' => 'Domain', 504: 'perc' => 'percent', 505: 'load' => 'Server Load', 506: 'userload' => 'User Load', 507: 'catalog' => 'Course/Community Catalog', 508: 'log' => 'Log in', 509: 'help' => 'Log-in Help', 510: 'serv' => 'Server', 511: 'servadm' => 'Server Administration', 512: 'helpdesk' => 'Contact Helpdesk', 513: 'forgotpw' => 'Forgot password?', 514: 'newuser' => 'New User?', 515: ); 516: # -------------------------------------------------- Change password field name 517: 518: my $forgotpw = &forgotpwdisplay(%lt); 519: $forgotpw .= '<br />' if $forgotpw; 520: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); 521: if ($loginhelp) { 522: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />'; 523: } 524: 525: # ---------------------------------------------------- Serve out DES JavaScript 526: { 527: my $jsh=Apache::File->new($include."/londes.js"); 528: $r->print(<$jsh>); 529: } 530: # ---------------------------------------------------------- Serve rest of page 531: 532: $r->print( 533: '<div class="LC_Box"' 534: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 535: ); 536: 537: $r->print(<<ENDSERVERFORM); 538: <form name="server" action="/adm/authenticate" method="post" target="_top"> 539: <input type="hidden" name="logtoken" value="$logtoken" /> 540: <input type="hidden" name="serverid" value="$lonhost" /> 541: <input type="hidden" name="uname" value="" /> 542: <input type="hidden" name="upass0" value="" /> 543: <input type="hidden" name="udom" value="" /> 544: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 545: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 546: </form> 547: ENDSERVERFORM 548: my $coursecatalog; 549: if (($showcoursecat eq '') || ($showcoursecat)) { 550: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 551: } 552: my $newuserlink; 553: if ($shownewuserlink) { 554: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 555: } 556: my $logintitle = 557: '<h2 class="LC_hcell"' 558: .' style="background:'.$loginbox_header_bgcol.';' 559: .' color:'.$loginbox_header_textcol.'">' 560: .$lt{'log'} 561: .'</h2>'; 562: 563: my $noscript_warning='<noscript><span class="LC_warning"><b>' 564: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 565: .'</b></span></noscript>'; 566: my $helpdeskscript; 567: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 568: $authdomain,\$helpdeskscript, 569: $showhelpdesk,\@possdoms); 570: 571: my $mobileargs; 572: if ($clientmobile) { 573: $mobileargs = 'autocapitalize="off" autocorrect="off"'; 574: } 575: my $loginform=(<<LFORM); 576: <form name="client" action="" onsubmit="return(send())"> 577: <input type="hidden" name="lextkey" value="$lextkey" /> 578: <input type="hidden" name="uextkey" value="$uextkey" /> 579: <b><label for="uname">$lt{'un'}</label>:</b><br /> 580: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br /> 581: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 582: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 583: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 584: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br /> 585: <input type="submit" value="$lt{'log'}" /> 586: </form> 587: LFORM 588: 589: if ($showbanner) { 590: $r->print(<<HEADER); 591:  592: <div style="background:$pgbg;margin:0;width:100%;"> 593: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" /> 594: </div> 595: HEADER 596: } 597: $r->print(<<ENDTOP); 598: <div style="float:left;margin-top:0;"> 599: <div class="LC_Box" style="background:$loginbox_bg;"> 600: $logintitle 601: $loginform 602: $noscript_warning 603: </div> 604: 605: <div class="LC_Box" style="padding-top: 10px;"> 606: $loginhelp 607: $forgotpw 608: $contactblock 609: $newuserlink 610: $coursecatalog 611: </div> 612: </div> 613: 614: <div> 615: ENDTOP 616: if ($showmainlogo) { 617: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n"); 618: } 619: $r->print(<<ENDTOP); 620: $announcements 621: </div> 622: <hr style="clear:both;" /> 623: ENDTOP 624: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 625: $domainrow = <<"END"; 626: <tr> 627: <td align="left" valign="top"> 628: <small><b>$lt{'dom'}: </b></small> 629: </td> 630: <td align="left" valign="top"> 631: <small><tt> $domain</tt></small> 632: </td> 633: </tr> 634: END 635: $serverrow = <<"END"; 636: <tr> 637: <td align="left" valign="top"> 638: <small><b>$lt{'serv'}: </b></small> 639: </td> 640: <td align="left" valign="top"> 641: <small><tt> $lonhost ($role)</tt></small> 642: </td> 643: </tr> 644: END 645: if ($loadlim) { 646: $loadrow = <<"END"; 647: <tr> 648: <td align="left" valign="top"> 649: <small><b>$lt{'load'}: </b></small> 650: </td> 651: <td align="left" valign="top"> 652: <small><tt> $loadpercent $lt{'perc'}</tt></small> 653: </td> 654: </tr> 655: END 656: } 657: if ($uloadlim) { 658: $userloadrow = <<"END"; 659: <tr> 660: <td align="left" valign="top"> 661: <small><b>$lt{'userload'}: </b></small> 662: </td> 663: <td align="left" valign="top"> 664: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 665: </td> 666: </tr> 667: END 668: } 669: if (($version ne '') && ($version ne '')) { 670: $versionrow = <<"END"; 671: <tr> 672: <td colspan="2" align="left"> 673: <small>$version</small> 674: </td> 675: </tr> 676: END 677: } 678: 679: $r->print(<<ENDDOCUMENT); 680: <div style="float: left;"> 681: <table border="0" cellspacing="0" cellpadding="0"> 682: $domainrow 683: $serverrow 684: $loadrow 685: $userloadrow 686: $versionrow 687: </table> 688: </div> 689: <div style="float: right;"> 690: $domainlogo 691: </div> 692: <br style="clear:both;" /> 693: </div> 694: 695: <script type="text/javascript"> 696: // <![CDATA[ 697: // the if prevents the script error if the browser can not handle this 698: if ( document.client.uname ) { document.client.uname.focus(); } 699: // ]]> 700: </script> 701: $helpdeskscript 702: 703: ENDDOCUMENT 704: my %endargs = ( 'noredirectlink' => 1, ); 705: $r->print(&Apache::loncommon::end_page(\%endargs)); 706: return OK; 707: } 708: 709: sub check_loginvia { 710: my ($domain,$lonhost) = @_; 711: if ($domain eq '' || $lonhost eq '') { 712: return; 713: } 714: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 715: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 716: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 717: my $output; 718: if ($loginvia ne '') { 719: my $noredirect; 720: my $ip = $ENV{'REMOTE_ADDR'}; 721: if ($ip eq '127.0.0.1') { 722: $noredirect = 1; 723: } else { 724: if ($loginvia_exempt ne '') { 725: my @exempt = split(',',$loginvia_exempt); 726: if (grep(/^\Q$ip\E$/,@exempt)) { 727: $noredirect = 1; 728: } 729: } 730: } 731: unless ($noredirect) { 732: my ($newhost,$path); 733: if ($loginvia =~ /:/) { 734: ($newhost,$path) = split(':',$loginvia); 735: } else { 736: $newhost = $loginvia; 737: } 738: if ($newhost ne $lonhost) { 739: if (&Apache::lonnet::hostname($newhost) ne '') { 740: $output = &redirect_page($newhost,$path); 741: } 742: } 743: } 744: } 745: return $output; 746: } 747: 748: sub redirect_page { 749: my ($desthost,$path) = @_; 750: my $protocol = $Apache::lonnet::protocol{$desthost}; 751: $protocol = 'http' if ($protocol ne 'https'); 752: unless ($path =~ m{^/}) { 753: $path = '/'.$path; 754: } 755: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path; 756: if ($env{'form.firsturl'} ne '') { 757: $url .='?firsturl='.$env{'form.firsturl'}; 758: } 759: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 760: {'redirect' => [0,$url],}); 761: my $end_page = &Apache::loncommon::end_page(); 762: return $start_page.$end_page; 763: } 764: 765: sub contactdisplay { 766: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, 767: $possdoms) = @_; 768: my $contactblock; 769: my $origmail; 770: if (ref($possdoms) eq 'ARRAY') { 771: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { 772: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 773: } 774: } 775: my $requestmail = 776: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 777: $authdomain,$origmail); 778: unless ($showhelpdesk eq '0') { 779: if ($requestmail =~ m/[^\@]+\@[^\@]+/) { 780: $showhelpdesk = 1; 781: } else { 782: $showhelpdesk = 0; 783: } 784: } 785: if ($servadm && $showadminmail) { 786: $contactblock .= $$lt{'servadm'}.':<br />'. 787: '<tt>'.$servadm.'</tt><br />'; 788: } 789: if ($showhelpdesk) { 790: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 791: my $thisurl = &escape('/adm/login'); 792: $$helpdeskscript = <<"ENDSCRIPT"; 793: <script type="text/javascript"> 794: // <![CDATA[ 795: function helpdesk() { 796: var possdom = document.client.udom.value; 797: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),''); 798: if (codedom == '') { 799: codedom = "$authdomain"; 800: } 801: var querystr = "origurl=$thisurl&codedom="+codedom; 802: document.location.href = "/adm/helpdesk?"+querystr; 803: return; 804: } 805: // ]]> 806: </script> 807: ENDSCRIPT 808: } 809: return $contactblock; 810: } 811: 812: sub forgotpwdisplay { 813: my (%lt) = @_; 814: my $prompt_for_resetpw = 1; 815: if ($prompt_for_resetpw) { 816: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 817: } 818: return; 819: } 820: 821: sub coursecatalog_link { 822: my ($linkname) = @_; 823: return <<"END"; 824: <a href="/adm/coursecatalog">$linkname</a> 825: END 826: } 827: 828: sub newuser_link { 829: my ($linkname) = @_; 830: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 831: } 832: 833: 1; 834: __END__