loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.191: download - view: text, annotated - select for diffs
Sun Oct 10 23:22:30 2021 UTC (2 years, 7 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- If SAML authentication (Shibboleth) is using /adm/login as landing page,
  delay deleting ltoken from tempdir, so it is available to lonacc::sso_login()
- Append either ltoken or linkkey to landing page link to /adm/sso to support
  deep-linking.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.191 2021/10/10 23:22:30 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 URI::Escape; 42: use HTML::Entities(); 43: use CGI::Cookie(); 44: 45: sub handler { 46: my $r = shift; 47: 48: &Apache::loncommon::get_unprocessed_cgi 49: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'}, 50: $ENV{'REDIRECT_QUERY_STRING'}), 51: ['interface','username','domain','firsturl','localpath','localres', 52: 'token','role','symb','iptoken','btoken','ltoken','linkkey','saml']); 53: if (!defined($env{'form.firsturl'})) { 54: &Apache::lonacc::get_posted_cgi($r,['firsturl']); 55: } 56: if (!defined($env{'form.firsturl'})) { 57: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) { 58: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'}; 59: } 60: } 61: if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) && 62: (!$env{'form.ltoken'}) && (!$env{'form.linkkey'})) { 63: &Apache::lonacc::get_posted_cgi($r,['linkkey']); 64: } 65: if ($env{'form.firsturl'} eq '/adm/logout') { 66: delete($env{'form.firsturl'}); 67: } 68: 69: # -- check if they are a migrating user 70: if (defined($env{'form.token'})) { 71: return &Apache::migrateuser::handler($r); 72: } 73: 74: # For "public user" - remove any exising "public" cookie, as user really wants to log-in 75: my ($handle,$lonidsdir,$expirepub,$userdom); 76: $lonidsdir=$r->dir_config('lonIDsDir'); 77: unless ($r->header_only) { 78: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); 79: if ($handle ne '') { 80: if ($handle=~/^publicuser\_/) { 81: unlink($r->dir_config('lonIDsDir')."/$handle.id"); 82: undef($handle); 83: undef($userdom); 84: $expirepub = 1; 85: } 86: } 87: } 88: 89: &Apache::loncommon::no_cache($r); 90: &Apache::lonlocal::get_language_handle($r); 91: &Apache::loncommon::content_type($r,'text/html'); 92: if ($expirepub) { 93: my $c = new CGI::Cookie(-name => 'lonPubID', 94: -value => '', 95: -expires => '-10y',); 96: $r->header_out('Set-cookie' => $c); 97: } elsif (($handle eq '') && ($userdom ne '')) { 98: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 99: foreach my $name (keys(%cookies)) { 100: next unless ($name =~ /^lon(|S|Link|Pub)ID$/); 101: my $c = new CGI::Cookie(-name => $name, 102: -value => '', 103: -expires => '-10y',); 104: $r->headers_out->add('Set-cookie' => $c); 105: } 106: } 107: $r->send_http_header; 108: return OK if $r->header_only; 109: 110: 111: # Are we re-routing? 112: my $londocroot = $r->dir_config('lonDocRoot'); 113: if (-e "$londocroot/lon-status/reroute.txt") { 114: &Apache::lonauth::reroute($r); 115: return OK; 116: } 117: 118: my $lonhost = $r->dir_config('lonHostID'); 119: 120: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) 121: 122: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); 123: if ($found_server) { 124: my $hostname = &Apache::lonnet::hostname($found_server); 125: if ($hostname ne '') { 126: my $protocol = $Apache::lonnet::protocol{$found_server}; 127: $protocol = 'http' if ($protocol ne 'https'); 128: my $dest = '/adm/roles'; 129: if ($env{'form.firsturl'} ne '') { 130: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 131: $dest = &uri_escape_utf8($env{'form.firsturl'}); 132: } else { 133: $dest = &uri_escape($env{'form.firsturl'}); 134: } 135: $dest = &HTML::Entities::encode($dest,"'"); 136: } 137: my %info = ( 138: balcookie => $lonhost.':'.$balancer_cookie, 139: ); 140: if ($env{'form.ltoken'}) { 141: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 142: if ($link_info{'linkprot'}) { 143: $info{'linkprot'} = $link_info{'linkprot'}; 144: } 145: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 146: delete($env{'form.ltoken'}); 147: } elsif ($env{'form.linkkey'}) { 148: $info{'linkkey'} = $env{'form.linkkey'}; 149: delete($env{'form.linkkey'}); 150: } 151: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server); 152: if ($balancer_token) { 153: $dest .= (($dest=~/\?/)?'&':'?') . 'btoken='.$balancer_token; 154: } 155: unless ($found_server eq $lonhost) { 156: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server); 157: $hostname = $alias if ($alias ne ''); 158: } 159: my $url = $protocol.'://'.$hostname.$dest; 160: my $start_page = 161: &Apache::loncommon::start_page('Switching Server ...',undef, 162: {'redirect' => [0,$url],}); 163: my $end_page = &Apache::loncommon::end_page(); 164: $r->print($start_page.$end_page); 165: return OK; 166: } 167: } 168: 169: # 170: # Check if a LON-CAPA load balancer sent user here because user's browser sent 171: # it a balancer cookie for an active session on this server. 172: # 173: 174: my ($balcookie,$linkprot,$linkkey); 175: if ($env{'form.btoken'}) { 176: my %info = &Apache::lonnet::tmpget($env{'form.btoken'}); 177: $balcookie = $info{'balcookie'}; 178: if ($balcookie) { 179: if ($info{'linkprot'}) { 180: $linkprot = $info{'linkprot'}; 181: } elsif ($info{'linkkey'}) { 182: $linkkey = $info{'linkkey'}; 183: } 184: } 185: &Apache::lonnet::tmpdel($env{'form.btoken'}); 186: delete($env{'form.btoken'}); 187: } 188: 189: # 190: # If browser sent an old cookie for which the session file had been removed 191: # check if configuration for user's domain has a portal URL set. If so 192: # switch user's log-in to the portal. 193: # 194: 195: if (($handle eq '') && ($userdom ne '')) { 196: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); 197: if ($domdefaults{'portal_def'} =~ /^https?\:/) { 198: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 199: {'redirect' => [0,$domdefaults{'portal_def'}],}); 200: my $end_page = &Apache::loncommon::end_page(); 201: $r->print($start_page.$end_page); 202: return OK; 203: } 204: } 205: 206: # -------------------------------- Prevent users from attempting to login twice 207: if ($handle ne '') { 208: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 209: my $start_page = 210: &Apache::loncommon::start_page('Already logged in'); 211: my $end_page = 212: &Apache::loncommon::end_page(); 213: my $dest = '/adm/roles'; 214: if ($env{'form.firsturl'} ne '') { 215: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 216: $dest = &uri_escape_utf8($env{'form.firsturl'}); 217: } else { 218: $dest = &uri_escape($env{'form.firsturl'}); 219: } 220: $dest = &HTML::Entities::encode($dest,"'"); 221: } 222: if (($env{'form.ltoken'}) || ($linkprot)) { 223: unless ($linkprot) { 224: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 225: $linkprot = $info{'linkprot'}; 226: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'}); 227: delete($env{'form.ltoken'}); 228: } 229: if ($linkprot) { 230: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2); 231: if ($env{'user.linkprotector'}) { 232: my @protectors = split(/,/,$env{'user.linkprotector'}); 233: unless (grep(/^\Q$linkprotector\E$/,@protectors)) { 234: push(@protectors,$linkprotector); 235: @protectors = sort { $a <=> $b } @protectors; 236: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)}); 237: } 238: } else { 239: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector }); 240: } 241: if ($env{'user.linkproturi'}) { 242: my @proturis = split(/,/,$env{'user.linkproturi'}); 243: unless (grep(/^\Q$deeplink\E$/,@proturis)) { 244: push(@proturis,$deeplink); 245: @proturis = sort @proturis; 246: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)}); 247: } 248: } else { 249: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink}); 250: } 251: } 252: } elsif (($env{'form.linkkey'}) || ($linkkey)) { 253: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) { 254: if ($linkkey eq '') { 255: $linkkey = $env{'form.linkkey'}; 256: } 257: if ($env{'user.deeplinkkey'}) { 258: my @linkkeys = split(/,/,$env{'user.deeplinkkey'}); 259: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) { 260: push(@linkkeys,$linkkey); 261: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))}); 262: } 263: } else { 264: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey}); 265: } 266: my $deeplink = $env{'form.firsturl'}; 267: if ($env{'user.keyedlinkuri'}) { 268: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'}); 269: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) { 270: push(@keyeduris,$deeplink); 271: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))}); 272: } 273: } else { 274: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink}); 275: } 276: } 277: } 278: $r->print( 279: $start_page 280: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' 281: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 282: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 283: .$end_page 284: ); 285: return OK; 286: } 287: 288: # ---------------------------------------------------- No valid token, continue 289: 290: # ---------------------------- Not possible to really login to domain "public" 291: if ($env{'form.domain'} eq 'public') { 292: $env{'form.domain'}=''; 293: $env{'form.username'}=''; 294: } 295: 296: # ------ Is this page requested because /adm/migrateuser detected an IP change? 297: my %sessiondata; 298: if ($env{'form.iptoken'}) { 299: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); 300: unless ($sessiondata{'sessionserver'}) { 301: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); 302: delete($env{'form.iptoken'}); 303: } 304: } 305: # ----------------------------------------------------------- Process Interface 306: $env{'form.interface'}=~s/\W//g; 307: 308: (undef,undef,undef,undef,undef,undef,my $clientmobile) = 309: &Apache::loncommon::decode_user_agent(); 310: 311: my $iconpath= 312: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 313: 314: my $domain = &Apache::lonnet::default_login_domain(); 315: my $defdom = $domain; 316: if ($lonhost ne '') { 317: unless ($sessiondata{'sessionserver'}) { 318: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot); 319: if ($redirect) { 320: $r->print($redirect); 321: return OK; 322: } 323: } 324: } 325: 326: if (($sessiondata{'domain'}) && 327: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) { 328: $domain=$sessiondata{'domain'}; 329: } elsif (($env{'form.domain'}) && 330: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 331: $domain=$env{'form.domain'}; 332: } 333: 334: my $role = $r->dir_config('lonRole'); 335: my $loadlim = $r->dir_config('lonLoadLim'); 336: my $uloadlim= $r->dir_config('lonUserLoadLim'); 337: my $servadm = $r->dir_config('lonAdmEMail'); 338: my $tabdir = $r->dir_config('lonTabDir'); 339: my $include = $r->dir_config('lonIncludes'); 340: my $expire = $r->dir_config('lonExpire'); 341: my $version = $r->dir_config('lonVersion'); 342: my $host_name = &Apache::lonnet::hostname($lonhost); 343: 344: # --------------------------------------------- Default values for login fields 345: 346: my ($authusername,$authdomain); 347: if ($sessiondata{'username'}) { 348: $authusername=$sessiondata{'username'}; 349: } else { 350: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); 351: $authusername=($env{'form.username'}?$env{'form.username'}:''); 352: } 353: if ($sessiondata{'domain'}) { 354: $authdomain=$sessiondata{'domain'}; 355: } else { 356: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); 357: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 358: } 359: 360: # ---------------------------------------------------------- Determine own load 361: my $loadavg; 362: { 363: my $loadfile=Apache::File->new('/proc/loadavg'); 364: $loadavg=<$loadfile>; 365: } 366: $loadavg =~ s/\s.*//g; 367: 368: my ($loadpercent,$userloadpercent); 369: if ($loadlim) { 370: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 371: } 372: if ($uloadlim) { 373: $userloadpercent=&Apache::lonnet::userload(); 374: } 375: 376: my $firsturl= 377: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 378: 379: # ----------------------------------------------------------- Get announcements 380: my $announcements=&Apache::lonnet::getannounce(); 381: # -------------------------------------------------------- Set login parameters 382: 383: my @hexstr=('0','1','2','3','4','5','6','7', 384: '8','9','a','b','c','d','e','f'); 385: my $lkey=''; 386: for (0..7) { 387: $lkey.=$hexstr[rand(15)]; 388: } 389: 390: my $ukey=''; 391: for (0..7) { 392: $ukey.=$hexstr[rand(15)]; 393: } 394: 395: my $lextkey=hex($lkey); 396: if ($lextkey>2147483647) { $lextkey-=4294967296; } 397: 398: my $uextkey=hex($ukey); 399: if ($uextkey>2147483647) { $uextkey-=4294967296; } 400: 401: # -------------------------------------------------------- Store away log token 402: my $tokenextras; 403: if ($env{'form.role'}) { 404: $tokenextras = '&role='.&escape($env{'form.role'}); 405: } 406: if ($env{'form.symb'}) { 407: if (!$tokenextras) { 408: $tokenextras = '&'; 409: } 410: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 411: } 412: if ($env{'form.iptoken'}) { 413: if (!$tokenextras) { 414: $tokenextras = '&&'; 415: } 416: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); 417: } 418: if ($env{'form.ltoken'}) { 419: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 420: if ($info{'linkprot'}) { 421: if (!$tokenextras) { 422: $tokenextras = '&&&'; 423: } 424: $tokenextras .= '&linkprot='.&escape($info{'linkprot'}); 425: } 426: } elsif ($env{'form.linkkey'}) { 427: if (!$tokenextras) { 428: $tokenextras = '&&&'; 429: } 430: $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'}); 431: } 432: my $logtoken=Apache::lonnet::reply( 433: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 434: $lonhost); 435: 436: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 437: # we are in serious trouble 438: 439: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 440: if ($logtoken eq 'no_such_host') { 441: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 442: } 443: if ($env{'form.ltoken'}) { 444: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 445: delete($env{'form.ltoken'}); 446: } 447: my $spares=''; 448: my (@sparehosts,%spareservers); 449: my $sparesref = &Apache::lonnet::this_host_spares($defdom); 450: if (ref($sparesref) eq 'HASH') { 451: foreach my $key (keys(%{$sparesref})) { 452: if (ref($sparesref->{$key}) eq 'ARRAY') { 453: my @sorted = sort { &Apache::lonnet::hostname($a) cmp 454: &Apache::lonnet::hostname($b); 455: } @{$sparesref->{$key}}; 456: if (@sorted) { 457: if ($key eq 'primary') { 458: unshift(@sparehosts,@sorted); 459: } elsif ($key eq 'default') { 460: push(@sparehosts,@sorted); 461: } 462: } 463: } 464: } 465: } 466: foreach my $hostid (@sparehosts) { 467: next if ($hostid eq $lonhost); 468: my $hostname = &Apache::lonnet::hostname($hostid); 469: next if (($hostname eq '') || ($spareservers{$hostname})); 470: $spareservers{$hostname} = 1; 471: my $protocol = $Apache::lonnet::protocol{$hostid}; 472: $protocol = 'http' if ($protocol ne 'https'); 473: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'. 474: $hostname. 475: '/adm/login?domain='.$authdomain.'">'. 476: $hostname.'</a>'. 477: ' '.&mt('(preferred)').'</span>'.$/; 478: } 479: if ($spares) { 480: $spares.= '<br />'; 481: } 482: my %all_hostnames = &Apache::lonnet::all_hostnames(); 483: foreach my $hostid (sort 484: { 485: &Apache::lonnet::hostname($a) cmp 486: &Apache::lonnet::hostname($b); 487: } 488: keys(%all_hostnames)) { 489: next if ($hostid eq $lonhost); 490: my $hostname = &Apache::lonnet::hostname($hostid); 491: next if (($hostname eq '') || ($spareservers{$hostname})); 492: $spareservers{$hostname} = 1; 493: my $protocol = $Apache::lonnet::protocol{$hostid}; 494: $protocol = 'http' if ($protocol ne 'https'); 495: $spares.='<br /><a href="'.$protocol.'://'. 496: $hostname. 497: '/adm/login?domain='.$authdomain.'">'. 498: $hostname.'</a>'; 499: } 500: $r->print( 501: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">' 502: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">' 503: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>' 504: .&mt('The LearningOnline Network with CAPA') 505: .'</title></head>' 506: .'<body bgcolor="#FFFFFF">' 507: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 508: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />' 509: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 510: if ($spares) { 511: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 512: .'</p>' 513: .$spares); 514: } 515: $r->print('</body>' 516: .'</html>' 517: ); 518: return OK; 519: } 520: 521: # ----------------------------------------------- Apparently we are in business 522: $servadm=~s/\,/\<br \/\>/g; 523: 524: # ----------------------------------------------------------- Front page design 525: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 526: my $font=&Apache::loncommon::designparm('login.font',$domain); 527: my $link=&Apache::loncommon::designparm('login.link',$domain); 528: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 529: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 530: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 531: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 532: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 533: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 534: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 535: my $img=&Apache::loncommon::designparm('login.img',$domain); 536: my $domainlogo=&Apache::loncommon::domainlogo($domain); 537: my $showbanner = 1; 538: my $showmainlogo = 1; 539: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 540: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 541: } 542: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 543: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 544: } 545: my $showadminmail; 546: my @possdoms = &Apache::lonnet::current_machine_domains(); 547: if (grep(/^\Q$domain\E$/,@possdoms)) { 548: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 549: } 550: my $showcoursecat = 551: &Apache::loncommon::designparm('login.coursecatalog',$domain); 552: my $shownewuserlink = 553: &Apache::loncommon::designparm('login.newuser',$domain); 554: my $showhelpdesk = 555: &Apache::loncommon::designparm('login.helpdesk',$domain); 556: my $now=time; 557: my $js = (<<ENDSCRIPT); 558: 559: <script type="text/javascript" language="JavaScript"> 560: // <![CDATA[ 561: function send() 562: { 563: this.document.server.elements.uname.value 564: =this.document.client.elements.uname.value; 565: 566: this.document.server.elements.udom.value 567: =this.document.client.elements.udom.value; 568: 569: uextkey=this.document.client.elements.uextkey.value; 570: lextkey=this.document.client.elements.lextkey.value; 571: initkeys(); 572: 573: if(this.document.server.action.substr(0,5) === 'http:'){ 574: this.document.server.elements.upass0.value 575: =getCrypted(this.document.client.elements.upass$now.value); 576: } else { 577: this.document.server.elements.upass0.value 578: =this.document.client.elements.upass$now.value; 579: } 580: 581: this.document.client.elements.uname.value=''; 582: this.document.client.elements.upass$now.value=''; 583: 584: this.document.server.submit(); 585: return false; 586: } 587: 588: function enableInput() { 589: this.document.client.elements.upass$now.removeAttribute("readOnly"); 590: this.document.client.elements.uname.removeAttribute("readOnly"); 591: this.document.client.elements.udom.removeAttribute("readOnly"); 592: return; 593: } 594: 595: // ]]> 596: </script> 597: 598: ENDSCRIPT 599: 600: my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing, 601: $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip); 602: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); 603: @hosts = &Apache::lonnet::current_machine_ids(); 604: $lonhost_in_use = $lonhost; 605: if (@hosts > 1) { 606: foreach my $hostid (@hosts) { 607: if (&Apache::lonnet::host_domain($hostid) eq $defdom) { 608: $lonhost_in_use = $hostid; 609: last; 610: } 611: } 612: } 613: $saml_prefix = $defdom.'.login.saml_'; 614: if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) { 615: $saml_landing = 1; 616: $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use}; 617: $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use}; 618: $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use}; 619: $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use}; 620: $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use}; 621: $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use}; 622: } 623: if ($saml_landing) { 624: if ($samlssotext eq '') { 625: $samlssotext = 'SSO Login'; 626: } 627: if ($samlnonsso eq '') { 628: $samlnonsso = 'Non-SSO Login'; 629: } 630: $js .= <<"ENDSAMLJS"; 631: 632: <script type="text/javascript"> 633: // <![CDATA[ 634: function toggleLClogin() { 635: if (document.getElementById('LC_standard_login')) { 636: if (document.getElementById('LC_standard_login').style.display == 'none') { 637: document.getElementById('LC_standard_login').style.display = 'inline-block'; 638: if (document.getElementById('LC_login_text')) { 639: document.getElementById('LC_login_text').innerHTML = '$samlnonsso'; 640: } 641: if (document.getElementById('LC_SSO_login')) { 642: document.getElementById('LC_SSO_login').style.display = 'none'; 643: } 644: } else { 645: document.getElementById('LC_standard_login').style.display = 'none'; 646: if (document.getElementById('LC_login_text')) { 647: document.getElementById('LC_login_text').innerHTML = '$samlssotext'; 648: } 649: if (document.getElementById('LC_SSO_login')) { 650: document.getElementById('LC_SSO_login').style.display = 'inline-block'; 651: } 652: } 653: } 654: return; 655: } 656: 657: // ]]> 658: </script> 659: 660: ENDSAMLJS 661: } 662: 663: # --------------------------------------------------- Print login screen header 664: 665: my %add_entries = ( 666: bgcolor => "$mainbg", 667: text => "$font", 668: link => "$link", 669: vlink => "$vlink", 670: alink => "$alink", 671: onload => 'javascript:enableInput();',); 672: 673: my ($headextra,$headextra_exempt); 674: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; 675: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; 676: if ($headextra) { 677: my $omitextra; 678: if ($headextra_exempt ne '') { 679: my @exempt = split(',',$headextra_exempt); 680: my $ip = &Apache::lonnet::get_requestor_ip(); 681: if (grep(/^\Q$ip\E$/,@exempt)) { 682: $omitextra = 1; 683: } 684: } 685: unless ($omitextra) { 686: my $confname = $defdom.'-domainconfig'; 687: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) { 688: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra)); 689: unless ($extra eq '-1') { 690: $js .= "\n".$extra."\n"; 691: } 692: } 693: } 694: } 695: 696: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 697: { 'redirect' => [$expire,'/adm/roles'], 698: 'add_entries' => \%add_entries, 699: 'only_body' => 1,})); 700: 701: # ----------------------------------------------------------------------- Texts 702: 703: my %lt=&Apache::lonlocal::texthash( 704: 'un' => 'Username', 705: 'pw' => 'Password', 706: 'dom' => 'Domain', 707: 'perc' => 'percent', 708: 'load' => 'Server Load', 709: 'userload' => 'User Load', 710: 'catalog' => 'Course/Community Catalog', 711: 'log' => 'Log in', 712: 'help' => 'Log-in Help', 713: 'serv' => 'Server', 714: 'servadm' => 'Server Administration', 715: 'helpdesk' => 'Contact Helpdesk', 716: 'forgotpw' => 'Forgot password?', 717: 'newuser' => 'New User?', 718: 'change' => 'Change?', 719: ); 720: # -------------------------------------------------- Change password field name 721: 722: my $forgotpw = &forgotpwdisplay(%lt); 723: $forgotpw .= '<br />' if $forgotpw; 724: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); 725: if ($loginhelp) { 726: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />'; 727: } 728: 729: # ---------------------------------------------------- Serve out DES JavaScript 730: { 731: my $jsh=Apache::File->new($include."/londes.js"); 732: $r->print(<$jsh>); 733: } 734: # ---------------------------------------------------------- Serve rest of page 735: 736: $r->print( 737: '<div class="LC_Box"' 738: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 739: ); 740: 741: $r->print(<<ENDSERVERFORM); 742: <form name="server" action="/adm/authenticate" method="post" target="_top"> 743: <input type="hidden" name="logtoken" value="$logtoken" /> 744: <input type="hidden" name="serverid" value="$lonhost" /> 745: <input type="hidden" name="uname" value="" /> 746: <input type="hidden" name="upass0" value="" /> 747: <input type="hidden" name="udom" value="" /> 748: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 749: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 750: </form> 751: ENDSERVERFORM 752: my $coursecatalog; 753: if (($showcoursecat eq '') || ($showcoursecat)) { 754: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 755: } 756: my $newuserlink; 757: if ($shownewuserlink) { 758: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 759: } 760: my $logintitle = 761: '<h2 class="LC_hcell"' 762: .' style="background:'.$loginbox_header_bgcol.';' 763: .' color:'.$loginbox_header_textcol.'">' 764: .$lt{'log'} 765: .'</h2>'; 766: 767: my $noscript_warning='<noscript><span class="LC_warning"><b>' 768: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 769: .'</b></span></noscript>'; 770: my $helpdeskscript; 771: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 772: $authdomain,\$helpdeskscript, 773: $showhelpdesk,\@possdoms); 774: 775: my $mobileargs; 776: if ($clientmobile) { 777: $mobileargs = 'autocapitalize="off" autocorrect="off"'; 778: } 779: my $loginform=(<<LFORM); 780: <form name="client" action="" onsubmit="return(send())" id="lclogin"> 781: <input type="hidden" name="lextkey" value="$lextkey" /> 782: <input type="hidden" name="uextkey" value="$uextkey" /> 783: <b><label for="uname">$lt{'un'}</label>:</b><br /> 784: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br /> 785: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 786: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 787: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 788: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br /> 789: <input type="submit" value="$lt{'log'}" /> 790: </form> 791: LFORM 792: 793: if ($showbanner) { 794: $r->print(<<HEADER); 795:  796: <div style="background:$pgbg;margin:0;width:100%;"> 797: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" /> 798: </div> 799: HEADER 800: } 801: 802: my $stdauthformstyle = 'inline-block'; 803: my $ssoauthstyle = 'none'; 804: my $logintype; 805: $r->print('<div style="float:left;margin-top:0;">'); 806: if ($saml_landing) { 807: $ssoauthstyle = 'inline-block'; 808: $stdauthformstyle = 'none'; 809: $logintype = $samlssotext; 810: my $ssologin = '/adm/sso'; 811: if ($samlssourl ne '') { 812: $ssologin = $samlssourl; 813: } 814: if ($env{'form.firsturl'} ne '') { 815: my $querystring = 'origurl='; 816: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 817: $querystring .= &uri_escape_utf8($env{'form.firsturl'}); 818: } else { 819: $querystring .= &uri_escape($env{'form.firsturl'}); 820: } 821: $querystring = &HTML::Entities::encode($querystring,"'"); 822: $ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring; 823: } 824: if ($env{'form.ltoken'} ne '') { 825: $querystring .= (($querystring eq '')?'':'&') . 'ltoken='. 826: &HTML::Entities::encode(&uri_escape($env{'form.ltoken'})); 827: } elsif ($env{'form.linkkey'}) { 828: $querystring .= (($querystring eq '')?'':'&') . 'linkkey='. 829: &HTML::Entities::encode(&uri_escape($env{'form.linkkey'})); 830: } 831: my $ssohref; 832: if ($samlssoimg ne '') { 833: $ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'"><img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" /></a>'; 834: } else { 835: $ssohref = '<a href="'.$ssologin.'">'.$samlssotext.'</a>'; 836: } 837: if (($env{'form.saml'} eq 'no') || 838: (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) { 839: $ssoauthstyle = 'none'; 840: $stdauthformstyle = 'inline-block'; 841: $logintype = $samlnonsso; 842: } 843: $r->print(<<ENDSAML); 844: <p> 845: Log-in type: 846: <span style="font-weight:bold" id="LC_login_text">$logintype</span><br /> 847: <span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span> 848: </p> 849: <div style="display:$ssoauthstyle" id="LC_SSO_login"> 850: <div class="LC_Box" style="padding-top: 10px;"> 851: $ssohref 852: $noscript_warning 853: </div> 854: <div class="LC_Box" style="padding-top: 10px;"> 855: $loginhelp 856: $contactblock 857: $coursecatalog 858: </div> 859: </div> 860: ENDSAML 861: } else { 862: if ($env{'form.ltoken'}) { 863: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 864: delete($env{'form.ltoken'}); 865: } 866: } 867: 868: $r->print(<<ENDLOGIN); 869: <div style="display:$stdauthformstyle;" id="LC_standard_login"> 870: <div class="LC_Box" style="background:$loginbox_bg;"> 871: $logintitle 872: $loginform 873: $noscript_warning 874: </div> 875: 876: <div class="LC_Box" style="padding-top: 10px;"> 877: $loginhelp 878: $forgotpw 879: $contactblock 880: $newuserlink 881: $coursecatalog 882: </div> 883: </div> 884: 885: ENDLOGIN 886: $r->print('</div><div>'."\n"); 887: if ($showmainlogo) { 888: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n"); 889: } 890: $r->print(<<ENDTOP); 891: $announcements 892: </div> 893: <hr style="clear:both;" /> 894: ENDTOP 895: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 896: $domainrow = <<"END"; 897: <tr> 898: <td align="left" valign="top"> 899: <small><b>$lt{'dom'}: </b></small> 900: </td> 901: <td align="left" valign="top"> 902: <small><tt> $domain</tt></small> 903: </td> 904: </tr> 905: END 906: $serverrow = <<"END"; 907: <tr> 908: <td align="left" valign="top"> 909: <small><b>$lt{'serv'}: </b></small> 910: </td> 911: <td align="left" valign="top"> 912: <small><tt> $lonhost ($role)</tt></small> 913: </td> 914: </tr> 915: END 916: if ($loadlim) { 917: $loadrow = <<"END"; 918: <tr> 919: <td align="left" valign="top"> 920: <small><b>$lt{'load'}: </b></small> 921: </td> 922: <td align="left" valign="top"> 923: <small><tt> $loadpercent $lt{'perc'}</tt></small> 924: </td> 925: </tr> 926: END 927: } 928: if ($uloadlim) { 929: $userloadrow = <<"END"; 930: <tr> 931: <td align="left" valign="top"> 932: <small><b>$lt{'userload'}: </b></small> 933: </td> 934: <td align="left" valign="top"> 935: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 936: </td> 937: </tr> 938: END 939: } 940: if (($version ne '') && ($version ne '')) { 941: $versionrow = <<"END"; 942: <tr> 943: <td colspan="2" align="left"> 944: <small>$version</small> 945: </td> 946: </tr> 947: END 948: } 949: 950: $r->print(<<ENDDOCUMENT); 951: <div style="float: left;"> 952: <table border="0" cellspacing="0" cellpadding="0"> 953: $domainrow 954: $serverrow 955: $loadrow 956: $userloadrow 957: $versionrow 958: </table> 959: </div> 960: <div style="float: right;"> 961: $domainlogo 962: </div> 963: <br style="clear:both;" /> 964: </div> 965: 966: <script type="text/javascript"> 967: // <![CDATA[ 968: // the if prevents the script error if the browser can not handle this 969: if ( document.client.uname ) { document.client.uname.focus(); } 970: // ]]> 971: </script> 972: $helpdeskscript 973: 974: ENDDOCUMENT 975: my %endargs = ( 'noredirectlink' => 1, ); 976: $r->print(&Apache::loncommon::end_page(\%endargs)); 977: return OK; 978: } 979: 980: sub check_loginvia { 981: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_; 982: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') { 983: return; 984: } 985: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 986: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 987: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 988: my $output; 989: if ($loginvia ne '') { 990: my $noredirect; 991: my $ip = &Apache::lonnet::get_requestor_ip(); 992: if ($ip eq '127.0.0.1') { 993: $noredirect = 1; 994: } else { 995: if ($loginvia_exempt ne '') { 996: my @exempt = split(',',$loginvia_exempt); 997: if (grep(/^\Q$ip\E$/,@exempt)) { 998: $noredirect = 1; 999: } 1000: } 1001: } 1002: unless ($noredirect) { 1003: my ($newhost,$path); 1004: if ($loginvia =~ /:/) { 1005: ($newhost,$path) = split(':',$loginvia); 1006: } else { 1007: $newhost = $loginvia; 1008: } 1009: if ($newhost ne $lonhost) { 1010: if (&Apache::lonnet::hostname($newhost) ne '') { 1011: if ($balcookie) { 1012: my ($balancer,$cookie) = split(/:/,$balcookie); 1013: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) { 1014: my ($udom,$uname,$cookieid) = ($1,$2,$3); 1015: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') { 1016: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) { 1017: while (my $filename=readdir($dh)) { 1018: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) { 1019: my $handle = $1; 1020: my %hash = 1021: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir, 1022: ['request.balancercookie', 1023: 'user.linkedenv']); 1024: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") { 1025: if (unlink("$lonidsdir/$filename")) { 1026: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && 1027: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") && 1028: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) { 1029: unlink("$lonidsdir/$hash{'user.linkedenv'}.id"); 1030: } 1031: } 1032: } 1033: last; 1034: } 1035: } 1036: closedir($dh); 1037: } 1038: } 1039: } 1040: } 1041: $output = &redirect_page($newhost,$path,$linkprot); 1042: } 1043: } 1044: } 1045: } 1046: return $output; 1047: } 1048: 1049: sub redirect_page { 1050: my ($desthost,$path,$linkprot) = @_; 1051: my $hostname = &Apache::lonnet::hostname($desthost); 1052: my $protocol = $Apache::lonnet::protocol{$desthost}; 1053: $protocol = 'http' if ($protocol ne 'https'); 1054: unless ($path =~ m{^/}) { 1055: $path = '/'.$path; 1056: } 1057: my $url = $protocol.'://'.$hostname.$path; 1058: if ($env{'form.firsturl'} ne '') { 1059: my $querystring; 1060: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 1061: $querystring = &uri_escape_utf8($env{'form.firsturl'}); 1062: } else { 1063: $querystring = &uri_escape($env{'form.firsturl'}); 1064: } 1065: $querystring = &HTML::Entities::encode($querystring,"'"); 1066: $url .='?firsturl='.$querystring 1067: } 1068: if ($linkprot) { 1069: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost); 1070: if ($ltoken) { 1071: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken; 1072: } 1073: } 1074: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 1075: {'redirect' => [0,$url],}); 1076: my $end_page = &Apache::loncommon::end_page(); 1077: return $start_page.$end_page; 1078: } 1079: 1080: sub contactdisplay { 1081: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, 1082: $possdoms) = @_; 1083: my $contactblock; 1084: my $origmail; 1085: if (ref($possdoms) eq 'ARRAY') { 1086: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { 1087: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 1088: } 1089: } 1090: my $requestmail = 1091: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 1092: $authdomain,$origmail); 1093: unless ($showhelpdesk eq '0') { 1094: if ($requestmail =~ m/[^\@]+\@[^\@]+/) { 1095: $showhelpdesk = 1; 1096: } else { 1097: $showhelpdesk = 0; 1098: } 1099: } 1100: if ($servadm && $showadminmail) { 1101: $contactblock .= $$lt{'servadm'}.':<br />'. 1102: '<tt>'.$servadm.'</tt><br />'; 1103: } 1104: if ($showhelpdesk) { 1105: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 1106: my $thisurl = &escape('/adm/login'); 1107: $$helpdeskscript = <<"ENDSCRIPT"; 1108: <script type="text/javascript"> 1109: // <![CDATA[ 1110: function helpdesk() { 1111: var possdom = document.client.udom.value; 1112: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),''); 1113: if (codedom == '') { 1114: codedom = "$authdomain"; 1115: } 1116: var querystr = "origurl=$thisurl&codedom="+codedom; 1117: document.location.href = "/adm/helpdesk?"+querystr; 1118: return; 1119: } 1120: // ]]> 1121: </script> 1122: ENDSCRIPT 1123: } 1124: return $contactblock; 1125: } 1126: 1127: sub forgotpwdisplay { 1128: my (%lt) = @_; 1129: my $prompt_for_resetpw = 1; 1130: if ($prompt_for_resetpw) { 1131: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 1132: } 1133: return; 1134: } 1135: 1136: sub coursecatalog_link { 1137: my ($linkname) = @_; 1138: return <<"END"; 1139: <a href="/adm/coursecatalog">$linkname</a> 1140: END 1141: } 1142: 1143: sub newuser_link { 1144: my ($linkname) = @_; 1145: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 1146: } 1147: 1148: 1; 1149: __END__