loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.183: download - view: text, annotated - select for diffs
Mon May 3 15:27:44 2021 UTC (3 years, 1 month ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Bug 6914
 - Check whether WAF proxy alias should be used when using switchserver.
 - Requests for /adm/dns/hosts and /adm/dns/domain from other nodes in the
   network do not require redirecting to an alias (if in use).

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.183 2021/05/03 15:27:44 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: $ENV{'REDIRECT_QUERY_STRING'}), 49: ['interface','username','domain','firsturl','localpath','localres', 50: 'token','role','symb','iptoken','btoken','ltoken','linkkey']); 51: if (!defined($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'} = $ENV{'REDIRECT_URL'}; 57: } 58: } 59: if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) && 60: (!$env{'form.ltoken'}) && (!$env{'form.linkkey'})) { 61: &Apache::lonacc::get_posted_cgi($r,['linkkey']); 62: } 63: 64: # -- check if they are a migrating user 65: if (defined($env{'form.token'})) { 66: return &Apache::migrateuser::handler($r); 67: } 68: 69: # For "public user" - remove any exising "public" cookie, as user really wants to log-in 70: my ($handle,$lonidsdir,$expirepub,$userdom); 71: $lonidsdir=$r->dir_config('lonIDsDir'); 72: unless ($r->header_only) { 73: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); 74: if ($handle ne '') { 75: if ($handle=~/^publicuser\_/) { 76: unlink($r->dir_config('lonIDsDir')."/$handle.id"); 77: undef($handle); 78: undef($userdom); 79: $expirepub = 1; 80: } 81: } 82: } 83: 84: &Apache::loncommon::no_cache($r); 85: &Apache::lonlocal::get_language_handle($r); 86: &Apache::loncommon::content_type($r,'text/html'); 87: if ($expirepub) { 88: my $c = new CGI::Cookie(-name => 'lonPubID', 89: -value => '', 90: -expires => '-10y',); 91: $r->header_out('Set-cookie' => $c); 92: } elsif (($handle eq '') && ($userdom ne '')) { 93: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 94: foreach my $name (keys(%cookies)) { 95: next unless ($name =~ /^lon(|S|Link|Pub)ID$/); 96: my $c = new CGI::Cookie(-name => $name, 97: -value => '', 98: -expires => '-10y',); 99: $r->headers_out->add('Set-cookie' => $c); 100: } 101: } 102: $r->send_http_header; 103: return OK if $r->header_only; 104: 105: 106: # Are we re-routing? 107: my $londocroot = $r->dir_config('lonDocRoot'); 108: if (-e "$londocroot/lon-status/reroute.txt") { 109: &Apache::lonauth::reroute($r); 110: return OK; 111: } 112: 113: my $lonhost = $r->dir_config('lonHostID'); 114: $env{'form.firsturl'} =~ s/(`)/'/g; 115: 116: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) 117: 118: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); 119: if ($found_server) { 120: my $hostname = &Apache::lonnet::hostname($found_server); 121: if ($hostname ne '') { 122: my $protocol = $Apache::lonnet::protocol{$found_server}; 123: $protocol = 'http' if ($protocol ne 'https'); 124: my $dest = '/adm/roles'; 125: if ($env{'form.firsturl'} ne '') { 126: $dest = $env{'form.firsturl'}; 127: } 128: my %info = ( 129: balcookie => $lonhost.':'.$balancer_cookie, 130: ); 131: if ($env{'form.ltoken'}) { 132: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 133: if ($link_info{'linkprot'}) { 134: $info{'linkprot'} = $link_info{'linkprot'}; 135: } 136: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 137: delete($env{'form.ltoken'}); 138: } elsif ($env{'form.linkkey'}) { 139: $info{'linkkey'} = $env{'form.linkkey'}; 140: delete($env{'form.linkkey'}); 141: } 142: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server); 143: if ($balancer_token) { 144: $dest .= (($dest=~/\?/)?'&;':'?') . 'btoken='.$balancer_token; 145: } 146: unless ($found_server eq $lonhost) { 147: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server); 148: $hostname = $alias if ($alias ne ''); 149: } 150: my $url = $protocol.'://'.$hostname.$dest; 151: my $start_page = 152: &Apache::loncommon::start_page('Switching Server ...',undef, 153: {'redirect' => [0,$url],}); 154: my $end_page = &Apache::loncommon::end_page(); 155: $r->print($start_page.$end_page); 156: return OK; 157: } 158: } 159: 160: # 161: # Check if a LON-CAPA load balancer sent user here because user's browser sent 162: # it a balancer cookie for an active session on this server. 163: # 164: 165: my ($balcookie,$linkprot,$linkkey); 166: if ($env{'form.btoken'}) { 167: my %info = &Apache::lonnet::tmpget($env{'form.btoken'}); 168: $balcookie = $info{'balcookie'}; 169: if ($balcookie) { 170: if ($info{'linkprot'}) { 171: $linkprot = $info{'linkprot'}; 172: } elsif ($info{'linkkey'}) { 173: $linkkey = $info{'linkkey'}; 174: } 175: } 176: &Apache::lonnet::tmpdel($env{'form.btoken'}); 177: delete($env{'form.btoken'}); 178: } 179: 180: # 181: # If browser sent an old cookie for which the session file had been removed 182: # check if configuration for user's domain has a portal URL set. If so 183: # switch user's log-in to the portal. 184: # 185: 186: if (($handle eq '') && ($userdom ne '')) { 187: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); 188: if ($domdefaults{'portal_def'} =~ /^https?\:/) { 189: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 190: {'redirect' => [0,$domdefaults{'portal_def'}],}); 191: my $end_page = &Apache::loncommon::end_page(); 192: $r->print($start_page.$end_page); 193: return OK; 194: } 195: } 196: 197: # -------------------------------- Prevent users from attempting to login twice 198: if ($handle ne '') { 199: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 200: my $start_page = 201: &Apache::loncommon::start_page('Already logged in'); 202: my $end_page = 203: &Apache::loncommon::end_page(); 204: my $dest = '/adm/roles'; 205: if ($env{'form.firsturl'} ne '') { 206: $dest = $env{'form.firsturl'}; 207: } 208: if (($env{'form.ltoken'}) || ($linkprot)) { 209: unless ($linkprot) { 210: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 211: $linkprot = $info{'linkprot'}; 212: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'}); 213: delete($env{'form.ltoken'}); 214: } 215: if ($linkprot) { 216: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2); 217: if ($env{'user.linkprotector'}) { 218: my @protectors = split(/,/,$env{'user.linkprotector'}); 219: unless (grep(/^\Q$linkprotector\E$/,@protectors)) { 220: push(@protectors,$linkprotector); 221: @protectors = sort { $a <=> $b } @protectors; 222: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)}); 223: } 224: } else { 225: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector }); 226: } 227: if ($env{'user.linkproturi'}) { 228: my @proturis = split(/,/,$env{'user.linkproturi'}); 229: unless (grep(/^\Q$deeplink\E$/,@proturis)) { 230: push(@proturis,$deeplink); 231: @proturis = sort @proturis; 232: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)}); 233: } 234: } else { 235: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink}); 236: } 237: } 238: } elsif (($env{'form.linkkey'}) || ($linkkey)) { 239: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) { 240: if ($linkkey eq '') { 241: $linkkey = $env{'form.linkkey'}; 242: } 243: if ($env{'user.deeplinkkey'}) { 244: my @linkkeys = split(/,/,$env{'user.deeplinkkey'}); 245: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) { 246: push(@linkkeys,$linkkey); 247: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))}); 248: } 249: } else { 250: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey}); 251: } 252: my $deeplink = $env{'form.firsturl'}; 253: if ($env{'user.keyedlinkuri'}) { 254: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'}); 255: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) { 256: push(@keyeduris,$deeplink); 257: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))}); 258: } 259: } else { 260: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink}); 261: } 262: } 263: } 264: $r->print( 265: $start_page 266: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' 267: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 268: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 269: .$end_page 270: ); 271: return OK; 272: } 273: 274: # ---------------------------------------------------- No valid token, continue 275: 276: # ---------------------------- Not possible to really login to domain "public" 277: if ($env{'form.domain'} eq 'public') { 278: $env{'form.domain'}=''; 279: $env{'form.username'}=''; 280: } 281: 282: # ------ Is this page requested because /adm/migrateuser detected an IP change? 283: my %sessiondata; 284: if ($env{'form.iptoken'}) { 285: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); 286: unless ($sessiondata{'sessionserver'}) { 287: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); 288: delete($env{'form.iptoken'}); 289: } 290: } 291: # ----------------------------------------------------------- Process Interface 292: $env{'form.interface'}=~s/\W//g; 293: 294: (undef,undef,undef,undef,undef,undef,my $clientmobile) = 295: &Apache::loncommon::decode_user_agent(); 296: 297: my $iconpath= 298: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 299: 300: my $domain = &Apache::lonnet::default_login_domain(); 301: my $defdom = $domain; 302: if ($lonhost ne '') { 303: unless ($sessiondata{'sessionserver'}) { 304: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot); 305: if ($redirect) { 306: $r->print($redirect); 307: return OK; 308: } 309: } 310: } 311: 312: if (($sessiondata{'domain'}) && 313: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) { 314: $domain=$sessiondata{'domain'}; 315: } elsif (($env{'form.domain'}) && 316: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 317: $domain=$env{'form.domain'}; 318: } 319: 320: my $role = $r->dir_config('lonRole'); 321: my $loadlim = $r->dir_config('lonLoadLim'); 322: my $uloadlim= $r->dir_config('lonUserLoadLim'); 323: my $servadm = $r->dir_config('lonAdmEMail'); 324: my $tabdir = $r->dir_config('lonTabDir'); 325: my $include = $r->dir_config('lonIncludes'); 326: my $expire = $r->dir_config('lonExpire'); 327: my $version = $r->dir_config('lonVersion'); 328: my $host_name = &Apache::lonnet::hostname($lonhost); 329: 330: # --------------------------------------------- Default values for login fields 331: 332: my ($authusername,$authdomain); 333: if ($sessiondata{'username'}) { 334: $authusername=$sessiondata{'username'}; 335: } else { 336: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); 337: $authusername=($env{'form.username'}?$env{'form.username'}:''); 338: } 339: if ($sessiondata{'domain'}) { 340: $authdomain=$sessiondata{'domain'}; 341: } else { 342: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); 343: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 344: } 345: 346: # ---------------------------------------------------------- Determine own load 347: my $loadavg; 348: { 349: my $loadfile=Apache::File->new('/proc/loadavg'); 350: $loadavg=<$loadfile>; 351: } 352: $loadavg =~ s/\s.*//g; 353: 354: my ($loadpercent,$userloadpercent); 355: if ($loadlim) { 356: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 357: } 358: if ($uloadlim) { 359: $userloadpercent=&Apache::lonnet::userload(); 360: } 361: 362: my $firsturl= 363: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 364: 365: # ----------------------------------------------------------- Get announcements 366: my $announcements=&Apache::lonnet::getannounce(); 367: # -------------------------------------------------------- Set login parameters 368: 369: my @hexstr=('0','1','2','3','4','5','6','7', 370: '8','9','a','b','c','d','e','f'); 371: my $lkey=''; 372: for (0..7) { 373: $lkey.=$hexstr[rand(15)]; 374: } 375: 376: my $ukey=''; 377: for (0..7) { 378: $ukey.=$hexstr[rand(15)]; 379: } 380: 381: my $lextkey=hex($lkey); 382: if ($lextkey>2147483647) { $lextkey-=4294967296; } 383: 384: my $uextkey=hex($ukey); 385: if ($uextkey>2147483647) { $uextkey-=4294967296; } 386: 387: # -------------------------------------------------------- Store away log token 388: my $tokenextras; 389: if ($env{'form.role'}) { 390: $tokenextras = '&role='.&escape($env{'form.role'}); 391: } 392: if ($env{'form.symb'}) { 393: if (!$tokenextras) { 394: $tokenextras = '&'; 395: } 396: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 397: } 398: if ($env{'form.iptoken'}) { 399: if (!$tokenextras) { 400: $tokenextras = '&&'; 401: } 402: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); 403: } 404: if ($env{'form.ltoken'}) { 405: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 406: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 407: delete($env{'form.ltoken'}); 408: if ($info{'linkprot'}) { 409: if (!$tokenextras) { 410: $tokenextras = '&&&'; 411: } 412: $tokenextras .= '&linkprot='.&escape($info{'linkprot'}); 413: } 414: } elsif ($env{'form.linkkey'}) { 415: if (!$tokenextras) { 416: $tokenextras = '&&&'; 417: } 418: $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'}); 419: } 420: my $logtoken=Apache::lonnet::reply( 421: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 422: $lonhost); 423: 424: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 425: # we are in serious trouble 426: 427: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 428: if ($logtoken eq 'no_such_host') { 429: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 430: } 431: my $spares=''; 432: my (@sparehosts,%spareservers); 433: my $sparesref = &Apache::lonnet::this_host_spares($defdom); 434: if (ref($sparesref) eq 'HASH') { 435: foreach my $key (keys(%{$sparesref})) { 436: if (ref($sparesref->{$key}) eq 'ARRAY') { 437: my @sorted = sort { &Apache::lonnet::hostname($a) cmp 438: &Apache::lonnet::hostname($b); 439: } @{$sparesref->{$key}}; 440: if (@sorted) { 441: if ($key eq 'primary') { 442: unshift(@sparehosts,@sorted); 443: } elsif ($key eq 'default') { 444: push(@sparehosts,@sorted); 445: } 446: } 447: } 448: } 449: } 450: foreach my $hostid (@sparehosts) { 451: next if ($hostid eq $lonhost); 452: my $hostname = &Apache::lonnet::hostname($hostid); 453: next if (($hostname eq '') || ($spareservers{$hostname})); 454: $spareservers{$hostname} = 1; 455: my $protocol = $Apache::lonnet::protocol{$hostid}; 456: $protocol = 'http' if ($protocol ne 'https'); 457: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'. 458: $hostname. 459: '/adm/login?domain='.$authdomain.'">'. 460: $hostname.'</a>'. 461: ' '.&mt('(preferred)').'</span>'.$/; 462: } 463: if ($spares) { 464: $spares.= '<br />'; 465: } 466: my %all_hostnames = &Apache::lonnet::all_hostnames(); 467: foreach my $hostid (sort 468: { 469: &Apache::lonnet::hostname($a) cmp 470: &Apache::lonnet::hostname($b); 471: } 472: keys(%all_hostnames)) { 473: next if ($hostid eq $lonhost); 474: my $hostname = &Apache::lonnet::hostname($hostid); 475: next if (($hostname eq '') || ($spareservers{$hostname})); 476: $spareservers{$hostname} = 1; 477: my $protocol = $Apache::lonnet::protocol{$hostid}; 478: $protocol = 'http' if ($protocol ne 'https'); 479: $spares.='<br /><a href="'.$protocol.'://'. 480: $hostname. 481: '/adm/login?domain='.$authdomain.'">'. 482: $hostname.'</a>'; 483: } 484: $r->print( 485: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">' 486: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">' 487: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>' 488: .&mt('The LearningOnline Network with CAPA') 489: .'</title></head>' 490: .'<body bgcolor="#FFFFFF">' 491: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 492: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />' 493: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 494: if ($spares) { 495: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 496: .'</p>' 497: .$spares); 498: } 499: $r->print('</body>' 500: .'</html>' 501: ); 502: return OK; 503: } 504: 505: # ----------------------------------------------- Apparently we are in business 506: $servadm=~s/\,/\<br \/\>/g; 507: 508: # ----------------------------------------------------------- Front page design 509: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 510: my $font=&Apache::loncommon::designparm('login.font',$domain); 511: my $link=&Apache::loncommon::designparm('login.link',$domain); 512: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 513: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 514: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 515: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 516: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 517: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 518: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 519: my $img=&Apache::loncommon::designparm('login.img',$domain); 520: my $domainlogo=&Apache::loncommon::domainlogo($domain); 521: my $showbanner = 1; 522: my $showmainlogo = 1; 523: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 524: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 525: } 526: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 527: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 528: } 529: my $showadminmail; 530: my @possdoms = &Apache::lonnet::current_machine_domains(); 531: if (grep(/^\Q$domain\E$/,@possdoms)) { 532: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 533: } 534: my $showcoursecat = 535: &Apache::loncommon::designparm('login.coursecatalog',$domain); 536: my $shownewuserlink = 537: &Apache::loncommon::designparm('login.newuser',$domain); 538: my $showhelpdesk = 539: &Apache::loncommon::designparm('login.helpdesk',$domain); 540: my $now=time; 541: my $js = (<<ENDSCRIPT); 542: 543: <script type="text/javascript" language="JavaScript"> 544: // <![CDATA[ 545: function send() 546: { 547: this.document.server.elements.uname.value 548: =this.document.client.elements.uname.value; 549: 550: this.document.server.elements.udom.value 551: =this.document.client.elements.udom.value; 552: 553: uextkey=this.document.client.elements.uextkey.value; 554: lextkey=this.document.client.elements.lextkey.value; 555: initkeys(); 556: 557: if(this.document.server.action.substr(0,5) === 'http:'){ 558: this.document.server.elements.upass0.value 559: =getCrypted(this.document.client.elements.upass$now.value); 560: } else { 561: this.document.server.elements.upass0.value 562: =this.document.client.elements.upass$now.value; 563: } 564: 565: this.document.client.elements.uname.value=''; 566: this.document.client.elements.upass$now.value=''; 567: 568: this.document.server.submit(); 569: return false; 570: } 571: 572: function enableInput() { 573: this.document.client.elements.upass$now.removeAttribute("readOnly"); 574: this.document.client.elements.uname.removeAttribute("readOnly"); 575: this.document.client.elements.udom.removeAttribute("readOnly"); 576: return; 577: } 578: 579: // ]]> 580: </script> 581: 582: ENDSCRIPT 583: 584: # --------------------------------------------------- Print login screen header 585: 586: my %add_entries = ( 587: bgcolor => "$mainbg", 588: text => "$font", 589: link => "$link", 590: vlink => "$vlink", 591: alink => "$alink", 592: onload => 'javascript:enableInput();',); 593: 594: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf); 595: @hosts = &Apache::lonnet::current_machine_ids(); 596: $lonhost_in_use = $lonhost; 597: if (@hosts > 1) { 598: foreach my $hostid (@hosts) { 599: if (&Apache::lonnet::host_domain($hostid) eq $defdom) { 600: $lonhost_in_use = $hostid; 601: last; 602: } 603: } 604: } 605: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); 606: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; 607: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; 608: if ($headextra) { 609: my $omitextra; 610: if ($headextra_exempt ne '') { 611: my @exempt = split(',',$headextra_exempt); 612: my $ip = &Apache::lonnet::get_requestor_ip(); 613: if (grep(/^\Q$ip\E$/,@exempt)) { 614: $omitextra = 1; 615: } 616: } 617: unless ($omitextra) { 618: my $confname = $defdom.'-domainconfig'; 619: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) { 620: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra)); 621: unless ($extra eq '-1') { 622: $js .= "\n".$extra."\n"; 623: } 624: } 625: } 626: } 627: 628: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 629: { 'redirect' => [$expire,'/adm/roles'], 630: 'add_entries' => \%add_entries, 631: 'only_body' => 1,})); 632: 633: # ----------------------------------------------------------------------- Texts 634: 635: my %lt=&Apache::lonlocal::texthash( 636: 'un' => 'Username', 637: 'pw' => 'Password', 638: 'dom' => 'Domain', 639: 'perc' => 'percent', 640: 'load' => 'Server Load', 641: 'userload' => 'User Load', 642: 'catalog' => 'Course/Community Catalog', 643: 'log' => 'Log in', 644: 'help' => 'Log-in Help', 645: 'serv' => 'Server', 646: 'servadm' => 'Server Administration', 647: 'helpdesk' => 'Contact Helpdesk', 648: 'forgotpw' => 'Forgot password?', 649: 'newuser' => 'New User?', 650: ); 651: # -------------------------------------------------- Change password field name 652: 653: my $forgotpw = &forgotpwdisplay(%lt); 654: $forgotpw .= '<br />' if $forgotpw; 655: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); 656: if ($loginhelp) { 657: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />'; 658: } 659: 660: # ---------------------------------------------------- Serve out DES JavaScript 661: { 662: my $jsh=Apache::File->new($include."/londes.js"); 663: $r->print(<$jsh>); 664: } 665: # ---------------------------------------------------------- Serve rest of page 666: 667: $r->print( 668: '<div class="LC_Box"' 669: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 670: ); 671: 672: $r->print(<<ENDSERVERFORM); 673: <form name="server" action="/adm/authenticate" method="post" target="_top"> 674: <input type="hidden" name="logtoken" value="$logtoken" /> 675: <input type="hidden" name="serverid" value="$lonhost" /> 676: <input type="hidden" name="uname" value="" /> 677: <input type="hidden" name="upass0" value="" /> 678: <input type="hidden" name="udom" value="" /> 679: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 680: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 681: </form> 682: ENDSERVERFORM 683: my $coursecatalog; 684: if (($showcoursecat eq '') || ($showcoursecat)) { 685: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 686: } 687: my $newuserlink; 688: if ($shownewuserlink) { 689: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 690: } 691: my $logintitle = 692: '<h2 class="LC_hcell"' 693: .' style="background:'.$loginbox_header_bgcol.';' 694: .' color:'.$loginbox_header_textcol.'">' 695: .$lt{'log'} 696: .'</h2>'; 697: 698: my $noscript_warning='<noscript><span class="LC_warning"><b>' 699: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 700: .'</b></span></noscript>'; 701: my $helpdeskscript; 702: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 703: $authdomain,\$helpdeskscript, 704: $showhelpdesk,\@possdoms); 705: 706: my $mobileargs; 707: if ($clientmobile) { 708: $mobileargs = 'autocapitalize="off" autocorrect="off"'; 709: } 710: my $loginform=(<<LFORM); 711: <form name="client" action="" onsubmit="return(send())"> 712: <input type="hidden" name="lextkey" value="$lextkey" /> 713: <input type="hidden" name="uextkey" value="$uextkey" /> 714: <b><label for="uname">$lt{'un'}</label>:</b><br /> 715: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br /> 716: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 717: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 718: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 719: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br /> 720: <input type="submit" value="$lt{'log'}" /> 721: </form> 722: LFORM 723: 724: if ($showbanner) { 725: $r->print(<<HEADER); 726:  727: <div style="background:$pgbg;margin:0;width:100%;"> 728: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" /> 729: </div> 730: HEADER 731: } 732: $r->print(<<ENDTOP); 733: <div style="float:left;margin-top:0;"> 734: <div class="LC_Box" style="background:$loginbox_bg;"> 735: $logintitle 736: $loginform 737: $noscript_warning 738: </div> 739: 740: <div class="LC_Box" style="padding-top: 10px;"> 741: $loginhelp 742: $forgotpw 743: $contactblock 744: $newuserlink 745: $coursecatalog 746: </div> 747: </div> 748: 749: <div> 750: ENDTOP 751: if ($showmainlogo) { 752: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n"); 753: } 754: $r->print(<<ENDTOP); 755: $announcements 756: </div> 757: <hr style="clear:both;" /> 758: ENDTOP 759: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 760: $domainrow = <<"END"; 761: <tr> 762: <td align="left" valign="top"> 763: <small><b>$lt{'dom'}: </b></small> 764: </td> 765: <td align="left" valign="top"> 766: <small><tt> $domain</tt></small> 767: </td> 768: </tr> 769: END 770: $serverrow = <<"END"; 771: <tr> 772: <td align="left" valign="top"> 773: <small><b>$lt{'serv'}: </b></small> 774: </td> 775: <td align="left" valign="top"> 776: <small><tt> $lonhost ($role)</tt></small> 777: </td> 778: </tr> 779: END 780: if ($loadlim) { 781: $loadrow = <<"END"; 782: <tr> 783: <td align="left" valign="top"> 784: <small><b>$lt{'load'}: </b></small> 785: </td> 786: <td align="left" valign="top"> 787: <small><tt> $loadpercent $lt{'perc'}</tt></small> 788: </td> 789: </tr> 790: END 791: } 792: if ($uloadlim) { 793: $userloadrow = <<"END"; 794: <tr> 795: <td align="left" valign="top"> 796: <small><b>$lt{'userload'}: </b></small> 797: </td> 798: <td align="left" valign="top"> 799: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 800: </td> 801: </tr> 802: END 803: } 804: if (($version ne '') && ($version ne '')) { 805: $versionrow = <<"END"; 806: <tr> 807: <td colspan="2" align="left"> 808: <small>$version</small> 809: </td> 810: </tr> 811: END 812: } 813: 814: $r->print(<<ENDDOCUMENT); 815: <div style="float: left;"> 816: <table border="0" cellspacing="0" cellpadding="0"> 817: $domainrow 818: $serverrow 819: $loadrow 820: $userloadrow 821: $versionrow 822: </table> 823: </div> 824: <div style="float: right;"> 825: $domainlogo 826: </div> 827: <br style="clear:both;" /> 828: </div> 829: 830: <script type="text/javascript"> 831: // <![CDATA[ 832: // the if prevents the script error if the browser can not handle this 833: if ( document.client.uname ) { document.client.uname.focus(); } 834: // ]]> 835: </script> 836: $helpdeskscript 837: 838: ENDDOCUMENT 839: my %endargs = ( 'noredirectlink' => 1, ); 840: $r->print(&Apache::loncommon::end_page(\%endargs)); 841: return OK; 842: } 843: 844: sub check_loginvia { 845: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_; 846: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') { 847: return; 848: } 849: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 850: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 851: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 852: my $output; 853: if ($loginvia ne '') { 854: my $noredirect; 855: my $ip = &Apache::lonnet::get_requestor_ip(); 856: if ($ip eq '127.0.0.1') { 857: $noredirect = 1; 858: } else { 859: if ($loginvia_exempt ne '') { 860: my @exempt = split(',',$loginvia_exempt); 861: if (grep(/^\Q$ip\E$/,@exempt)) { 862: $noredirect = 1; 863: } 864: } 865: } 866: unless ($noredirect) { 867: my ($newhost,$path); 868: if ($loginvia =~ /:/) { 869: ($newhost,$path) = split(':',$loginvia); 870: } else { 871: $newhost = $loginvia; 872: } 873: if ($newhost ne $lonhost) { 874: if (&Apache::lonnet::hostname($newhost) ne '') { 875: if ($balcookie) { 876: my ($balancer,$cookie) = split(/:/,$balcookie); 877: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) { 878: my ($udom,$uname,$cookieid) = ($1,$2,$3); 879: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') { 880: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) { 881: while (my $filename=readdir($dh)) { 882: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) { 883: my $handle = $1; 884: my %hash = 885: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir, 886: ['request.balancercookie', 887: 'user.linkedenv']); 888: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") { 889: if (unlink("$lonidsdir/$filename")) { 890: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && 891: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") && 892: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) { 893: unlink("$lonidsdir/$hash{'user.linkedenv'}.id"); 894: } 895: } 896: } 897: last; 898: } 899: } 900: closedir($dh); 901: } 902: } 903: } 904: } 905: $output = &redirect_page($newhost,$path,$linkprot); 906: } 907: } 908: } 909: } 910: return $output; 911: } 912: 913: sub redirect_page { 914: my ($desthost,$path,$linkprot) = @_; 915: my $hostname = &Apache::lonnet::hostname($desthost); 916: my $protocol = $Apache::lonnet::protocol{$desthost}; 917: $protocol = 'http' if ($protocol ne 'https'); 918: unless ($path =~ m{^/}) { 919: $path = '/'.$path; 920: } 921: my $url = $protocol.'://'.$hostname.$path; 922: if ($env{'form.firsturl'} ne '') { 923: $url .='?firsturl='.$env{'form.firsturl'}; 924: } 925: if ($linkprot) { 926: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost); 927: if ($ltoken) { 928: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken; 929: } 930: } 931: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 932: {'redirect' => [0,$url],}); 933: my $end_page = &Apache::loncommon::end_page(); 934: return $start_page.$end_page; 935: } 936: 937: sub contactdisplay { 938: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, 939: $possdoms) = @_; 940: my $contactblock; 941: my $origmail; 942: if (ref($possdoms) eq 'ARRAY') { 943: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { 944: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 945: } 946: } 947: my $requestmail = 948: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 949: $authdomain,$origmail); 950: unless ($showhelpdesk eq '0') { 951: if ($requestmail =~ m/[^\@]+\@[^\@]+/) { 952: $showhelpdesk = 1; 953: } else { 954: $showhelpdesk = 0; 955: } 956: } 957: if ($servadm && $showadminmail) { 958: $contactblock .= $$lt{'servadm'}.':<br />'. 959: '<tt>'.$servadm.'</tt><br />'; 960: } 961: if ($showhelpdesk) { 962: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 963: my $thisurl = &escape('/adm/login'); 964: $$helpdeskscript = <<"ENDSCRIPT"; 965: <script type="text/javascript"> 966: // <![CDATA[ 967: function helpdesk() { 968: var possdom = document.client.udom.value; 969: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),''); 970: if (codedom == '') { 971: codedom = "$authdomain"; 972: } 973: var querystr = "origurl=$thisurl&codedom="+codedom; 974: document.location.href = "/adm/helpdesk?"+querystr; 975: return; 976: } 977: // ]]> 978: </script> 979: ENDSCRIPT 980: } 981: return $contactblock; 982: } 983: 984: sub forgotpwdisplay { 985: my (%lt) = @_; 986: my $prompt_for_resetpw = 1; 987: if ($prompt_for_resetpw) { 988: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 989: } 990: return; 991: } 992: 993: sub coursecatalog_link { 994: my ($linkname) = @_; 995: return <<"END"; 996: <a href="/adm/coursecatalog">$linkname</a> 997: END 998: } 999: 1000: sub newuser_link { 1001: my ($linkname) = @_; 1002: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 1003: } 1004: 1005: 1; 1006: __END__