loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.192: download - view: text, annotated - select for diffs
Tue Oct 26 15:52:54 2021 UTC (2 years, 7 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Use token to store role, symb, linkprot, and/or linkkey when dual log-in
  page to support SSO (Shibboleth) and non-SSO is in use, and for "log in
  again" retry link for failed login, instead of using query string directly.
- When digest is used by tmpput handler in lond to generate an id, only use
  id which does not already exist in LON-CAPA's tmp directory.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.192 2021/10/26 15:52:54 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: 'sso','retry']); 54: my $lonhost = $r->dir_config('lonHostID'); 55: my $linkkey; 56: if (($env{'form.sso'}) || ($env{'form.retry'})) { 57: my $infotoken; 58: if ($env{'form.sso'}) { 59: $infotoken = $env{'form.sso'}; 60: } else { 61: $infotoken = $env{'form.retry'}; 62: } 63: my $data = &Apache::lonnet::reply('tmpget:'.$infotoken,$lonhost); 64: unless (($data=~/^error/) || ($data eq 'con_lost') || 65: ($data eq 'no_such_host')) { 66: my %info = &decode_token($data); 67: foreach my $item (keys(%info)) { 68: $env{'form.'.$item} = $info{$item}; 69: } 70: &Apache::lonnet::tmpdel($infotoken); 71: } 72: } else { 73: if ($env{'form.linkkey'}) { 74: $linkkey = $env{'form.linkkey'}; 75: } 76: if (!defined($env{'form.firsturl'})) { 77: &Apache::lonacc::get_posted_cgi($r,['firsturl']); 78: } 79: if (!defined($env{'form.firsturl'})) { 80: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) { 81: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'}; 82: } 83: } 84: if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) && 85: (!$env{'form.ltoken'}) && (!$env{'form.linkkey'})) { 86: &Apache::lonacc::get_posted_cgi($r,['linkkey']); 87: } 88: if ($env{'form.firsturl'} eq '/adm/logout') { 89: delete($env{'form.firsturl'}); 90: } 91: } 92: 93: # -- check if they are a migrating user 94: if (defined($env{'form.token'})) { 95: return &Apache::migrateuser::handler($r); 96: } 97: 98: # For "public user" - remove any exising "public" cookie, as user really wants to log-in 99: my ($handle,$lonidsdir,$expirepub,$userdom); 100: $lonidsdir=$r->dir_config('lonIDsDir'); 101: unless ($r->header_only) { 102: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom); 103: if ($handle ne '') { 104: if ($handle=~/^publicuser\_/) { 105: unlink($r->dir_config('lonIDsDir')."/$handle.id"); 106: undef($handle); 107: undef($userdom); 108: $expirepub = 1; 109: } 110: } 111: } 112: 113: &Apache::loncommon::no_cache($r); 114: &Apache::lonlocal::get_language_handle($r); 115: &Apache::loncommon::content_type($r,'text/html'); 116: if ($expirepub) { 117: my $c = new CGI::Cookie(-name => 'lonPubID', 118: -value => '', 119: -expires => '-10y',); 120: $r->header_out('Set-cookie' => $c); 121: } elsif (($handle eq '') && ($userdom ne '')) { 122: my %cookies=CGI::Cookie->parse($r->header_in('Cookie')); 123: foreach my $name (keys(%cookies)) { 124: next unless ($name =~ /^lon(|S|Link|Pub)ID$/); 125: my $c = new CGI::Cookie(-name => $name, 126: -value => '', 127: -expires => '-10y',); 128: $r->headers_out->add('Set-cookie' => $c); 129: } 130: } 131: $r->send_http_header; 132: return OK if $r->header_only; 133: 134: 135: # Are we re-routing? 136: my $londocroot = $r->dir_config('lonDocRoot'); 137: if (-e "$londocroot/lon-status/reroute.txt") { 138: &Apache::lonauth::reroute($r); 139: return OK; 140: } 141: 142: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer) 143: 144: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1); 145: if ($found_server) { 146: my $hostname = &Apache::lonnet::hostname($found_server); 147: if ($hostname ne '') { 148: my $protocol = $Apache::lonnet::protocol{$found_server}; 149: $protocol = 'http' if ($protocol ne 'https'); 150: my $dest = '/adm/roles'; 151: if ($env{'form.firsturl'} ne '') { 152: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 153: $dest = &uri_escape_utf8($env{'form.firsturl'}); 154: } else { 155: $dest = &uri_escape($env{'form.firsturl'}); 156: } 157: $dest = &HTML::Entities::encode($dest,"'"); 158: } 159: my %info = ( 160: balcookie => $lonhost.':'.$balancer_cookie, 161: ); 162: if ($env{'form.ltoken'}) { 163: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 164: if ($link_info{'linkprot'}) { 165: $info{'linkprot'} = $link_info{'linkprot'}; 166: } 167: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 168: delete($env{'form.ltoken'}); 169: } elsif ($env{'form.linkkey'}) { 170: $info{'linkkey'} = $env{'form.linkkey'}; 171: delete($env{'form.linkkey'}); 172: } 173: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server); 174: if ($balancer_token) { 175: $dest .= (($dest=~/\?/)?'&':'?') . 'btoken='.$balancer_token; 176: } 177: unless ($found_server eq $lonhost) { 178: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server); 179: $hostname = $alias if ($alias ne ''); 180: } 181: my $url = $protocol.'://'.$hostname.$dest; 182: my $start_page = 183: &Apache::loncommon::start_page('Switching Server ...',undef, 184: {'redirect' => [0,$url],}); 185: my $end_page = &Apache::loncommon::end_page(); 186: $r->print($start_page.$end_page); 187: return OK; 188: } 189: } 190: 191: # 192: # Check if a LON-CAPA load balancer sent user here because user's browser sent 193: # it a balancer cookie for an active session on this server. 194: # 195: 196: my ($balcookie,$linkprot,$linkkey); 197: if ($env{'form.btoken'}) { 198: my %info = &Apache::lonnet::tmpget($env{'form.btoken'}); 199: $balcookie = $info{'balcookie'}; 200: if ($balcookie) { 201: if ($info{'linkprot'}) { 202: $linkprot = $info{'linkprot'}; 203: } elsif ($info{'linkkey'}) { 204: $linkkey = $info{'linkkey'}; 205: } 206: } 207: &Apache::lonnet::tmpdel($env{'form.btoken'}); 208: delete($env{'form.btoken'}); 209: } 210: 211: # 212: # If browser sent an old cookie for which the session file had been removed 213: # check if configuration for user's domain has a portal URL set. If so 214: # switch user's log-in to the portal. 215: # 216: 217: if (($handle eq '') && ($userdom ne '')) { 218: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); 219: if ($domdefaults{'portal_def'} =~ /^https?\:/) { 220: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 221: {'redirect' => [0,$domdefaults{'portal_def'}],}); 222: my $end_page = &Apache::loncommon::end_page(); 223: $r->print($start_page.$end_page); 224: return OK; 225: } 226: } 227: 228: # -------------------------------- Prevent users from attempting to login twice 229: if ($handle ne '') { 230: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 231: my $start_page = 232: &Apache::loncommon::start_page('Already logged in'); 233: my $end_page = 234: &Apache::loncommon::end_page(); 235: my $dest = '/adm/roles'; 236: if ($env{'form.firsturl'} ne '') { 237: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 238: $dest = &uri_escape_utf8($env{'form.firsturl'}); 239: } else { 240: $dest = &uri_escape($env{'form.firsturl'}); 241: } 242: $dest = &HTML::Entities::encode($dest,"'"); 243: } 244: if (($env{'form.ltoken'}) || ($linkprot)) { 245: unless ($linkprot) { 246: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 247: $linkprot = $info{'linkprot'}; 248: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'}); 249: delete($env{'form.ltoken'}); 250: } 251: if ($linkprot) { 252: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2); 253: if ($env{'user.linkprotector'}) { 254: my @protectors = split(/,/,$env{'user.linkprotector'}); 255: unless (grep(/^\Q$linkprotector\E$/,@protectors)) { 256: push(@protectors,$linkprotector); 257: @protectors = sort { $a <=> $b } @protectors; 258: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)}); 259: } 260: } else { 261: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector }); 262: } 263: if ($env{'user.linkproturi'}) { 264: my @proturis = split(/,/,$env{'user.linkproturi'}); 265: unless (grep(/^\Q$deeplink\E$/,@proturis)) { 266: push(@proturis,$deeplink); 267: @proturis = sort @proturis; 268: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)}); 269: } 270: } else { 271: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink}); 272: } 273: } 274: } elsif (($env{'form.linkkey'}) || ($linkkey)) { 275: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) { 276: if ($linkkey eq '') { 277: $linkkey = $env{'form.linkkey'}; 278: } 279: if ($env{'user.deeplinkkey'}) { 280: my @linkkeys = split(/,/,$env{'user.deeplinkkey'}); 281: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) { 282: push(@linkkeys,$linkkey); 283: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))}); 284: } 285: } else { 286: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey}); 287: } 288: my $deeplink = $env{'form.firsturl'}; 289: if ($env{'user.keyedlinkuri'}) { 290: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'}); 291: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) { 292: push(@keyeduris,$deeplink); 293: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))}); 294: } 295: } else { 296: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink}); 297: } 298: } 299: } 300: $r->print( 301: $start_page 302: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' 303: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 304: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 305: .$end_page 306: ); 307: return OK; 308: } 309: 310: # ---------------------------------------------------- No valid token, continue 311: 312: # ---------------------------- Not possible to really login to domain "public" 313: if ($env{'form.domain'} eq 'public') { 314: $env{'form.domain'}=''; 315: $env{'form.username'}=''; 316: } 317: 318: # ------ Is this page requested because /adm/migrateuser detected an IP change? 319: my %sessiondata; 320: if ($env{'form.iptoken'}) { 321: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); 322: unless ($sessiondata{'sessionserver'}) { 323: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); 324: delete($env{'form.iptoken'}); 325: } 326: } 327: # ----------------------------------------------------------- Process Interface 328: $env{'form.interface'}=~s/\W//g; 329: 330: (undef,undef,undef,undef,undef,undef,my $clientmobile) = 331: &Apache::loncommon::decode_user_agent($r); 332: 333: my $iconpath= 334: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 335: 336: my $domain = &Apache::lonnet::default_login_domain(); 337: my $defdom = $domain; 338: if ($lonhost ne '') { 339: unless ($sessiondata{'sessionserver'}) { 340: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie, 341: $linkprot,$linkkey); 342: if ($redirect) { 343: $r->print($redirect); 344: return OK; 345: } 346: } 347: } 348: 349: if (($sessiondata{'domain'}) && 350: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) { 351: $domain=$sessiondata{'domain'}; 352: } elsif (($env{'form.domain'}) && 353: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 354: $domain=$env{'form.domain'}; 355: } 356: 357: my $role = $r->dir_config('lonRole'); 358: my $loadlim = $r->dir_config('lonLoadLim'); 359: my $uloadlim= $r->dir_config('lonUserLoadLim'); 360: my $servadm = $r->dir_config('lonAdmEMail'); 361: my $tabdir = $r->dir_config('lonTabDir'); 362: my $include = $r->dir_config('lonIncludes'); 363: my $expire = $r->dir_config('lonExpire'); 364: my $version = $r->dir_config('lonVersion'); 365: my $host_name = &Apache::lonnet::hostname($lonhost); 366: 367: # --------------------------------------------- Default values for login fields 368: 369: my ($authusername,$authdomain); 370: if ($sessiondata{'username'}) { 371: $authusername=$sessiondata{'username'}; 372: } else { 373: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); 374: $authusername=($env{'form.username'}?$env{'form.username'}:''); 375: } 376: if ($sessiondata{'domain'}) { 377: $authdomain=$sessiondata{'domain'}; 378: } else { 379: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); 380: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 381: } 382: 383: # ---------------------------------------------------------- Determine own load 384: my $loadavg; 385: { 386: my $loadfile=Apache::File->new('/proc/loadavg'); 387: $loadavg=<$loadfile>; 388: } 389: $loadavg =~ s/\s.*//g; 390: 391: my ($loadpercent,$userloadpercent); 392: if ($loadlim) { 393: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 394: } 395: if ($uloadlim) { 396: $userloadpercent=&Apache::lonnet::userload(); 397: } 398: 399: my $firsturl= 400: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 401: 402: # ----------------------------------------------------------- Get announcements 403: my $announcements=&Apache::lonnet::getannounce(); 404: # -------------------------------------------------------- Set login parameters 405: 406: my @hexstr=('0','1','2','3','4','5','6','7', 407: '8','9','a','b','c','d','e','f'); 408: my $lkey=''; 409: for (0..7) { 410: $lkey.=$hexstr[rand(15)]; 411: } 412: 413: my $ukey=''; 414: for (0..7) { 415: $ukey.=$hexstr[rand(15)]; 416: } 417: 418: my $lextkey=hex($lkey); 419: if ($lextkey>2147483647) { $lextkey-=4294967296; } 420: 421: my $uextkey=hex($ukey); 422: if ($uextkey>2147483647) { $uextkey-=4294967296; } 423: 424: # -------------------------------------------------------- Store away log token 425: my ($tokenextras,$tokentype); 426: my @names = ('role','symb','iptoken','ltoken','linkkey'); 427: foreach my $name (@names) { 428: if ($env{'form.'.$name} ne '') { 429: if ($name eq 'ltoken') { 430: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 431: if ($info{'linkprot'}) { 432: $tokenextras .= '&linkprot='.&escape($info{'linkprot'}); 433: $tokentype = 'link'; 434: last; 435: } 436: } else { 437: $tokenextras .= '&'.$name.'='.&escape($env{'form.'.$name}); 438: if ($name eq 'linkkey') { 439: $tokentype = 'link'; 440: } 441: } 442: } 443: } 444: if ($tokentype) { 445: $tokenextras .= ":$tokentype"; 446: } 447: my $logtoken=Apache::lonnet::reply( 448: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 449: $lonhost); 450: 451: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 452: # we are in serious trouble 453: 454: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 455: if ($logtoken eq 'no_such_host') { 456: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 457: } 458: if ($env{'form.ltoken'}) { 459: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 460: delete($env{'form.ltoken'}); 461: } 462: my $spares=''; 463: my (@sparehosts,%spareservers); 464: my $sparesref = &Apache::lonnet::this_host_spares($defdom); 465: if (ref($sparesref) eq 'HASH') { 466: foreach my $key (keys(%{$sparesref})) { 467: if (ref($sparesref->{$key}) eq 'ARRAY') { 468: my @sorted = sort { &Apache::lonnet::hostname($a) cmp 469: &Apache::lonnet::hostname($b); 470: } @{$sparesref->{$key}}; 471: if (@sorted) { 472: if ($key eq 'primary') { 473: unshift(@sparehosts,@sorted); 474: } elsif ($key eq 'default') { 475: push(@sparehosts,@sorted); 476: } 477: } 478: } 479: } 480: } 481: foreach my $hostid (@sparehosts) { 482: next if ($hostid eq $lonhost); 483: my $hostname = &Apache::lonnet::hostname($hostid); 484: next if (($hostname eq '') || ($spareservers{$hostname})); 485: $spareservers{$hostname} = 1; 486: my $protocol = $Apache::lonnet::protocol{$hostid}; 487: $protocol = 'http' if ($protocol ne 'https'); 488: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'. 489: $hostname. 490: '/adm/login?domain='.$authdomain.'">'. 491: $hostname.'</a>'. 492: ' '.&mt('(preferred)').'</span>'.$/; 493: } 494: if ($spares) { 495: $spares.= '<br />'; 496: } 497: my %all_hostnames = &Apache::lonnet::all_hostnames(); 498: foreach my $hostid (sort 499: { 500: &Apache::lonnet::hostname($a) cmp 501: &Apache::lonnet::hostname($b); 502: } 503: keys(%all_hostnames)) { 504: next if ($hostid eq $lonhost); 505: my $hostname = &Apache::lonnet::hostname($hostid); 506: next if (($hostname eq '') || ($spareservers{$hostname})); 507: $spareservers{$hostname} = 1; 508: my $protocol = $Apache::lonnet::protocol{$hostid}; 509: $protocol = 'http' if ($protocol ne 'https'); 510: $spares.='<br /><a href="'.$protocol.'://'. 511: $hostname. 512: '/adm/login?domain='.$authdomain.'">'. 513: $hostname.'</a>'; 514: } 515: $r->print( 516: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">' 517: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">' 518: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>' 519: .&mt('The LearningOnline Network with CAPA') 520: .'</title></head>' 521: .'<body bgcolor="#FFFFFF">' 522: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 523: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />' 524: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 525: if ($spares) { 526: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 527: .'</p>' 528: .$spares); 529: } 530: $r->print('</body>' 531: .'</html>' 532: ); 533: return OK; 534: } 535: 536: # ----------------------------------------------- Apparently we are in business 537: $servadm=~s/\,/\<br \/\>/g; 538: 539: # ----------------------------------------------------------- Front page design 540: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 541: my $font=&Apache::loncommon::designparm('login.font',$domain); 542: my $link=&Apache::loncommon::designparm('login.link',$domain); 543: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 544: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 545: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 546: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 547: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 548: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 549: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 550: my $img=&Apache::loncommon::designparm('login.img',$domain); 551: my $domainlogo=&Apache::loncommon::domainlogo($domain); 552: my $showbanner = 1; 553: my $showmainlogo = 1; 554: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 555: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 556: } 557: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 558: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 559: } 560: my $showadminmail; 561: my @possdoms = &Apache::lonnet::current_machine_domains(); 562: if (grep(/^\Q$domain\E$/,@possdoms)) { 563: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 564: } 565: my $showcoursecat = 566: &Apache::loncommon::designparm('login.coursecatalog',$domain); 567: my $shownewuserlink = 568: &Apache::loncommon::designparm('login.newuser',$domain); 569: my $showhelpdesk = 570: &Apache::loncommon::designparm('login.helpdesk',$domain); 571: my $now=time; 572: my $js = (<<ENDSCRIPT); 573: 574: <script type="text/javascript" language="JavaScript"> 575: // <![CDATA[ 576: function send() 577: { 578: this.document.server.elements.uname.value 579: =this.document.client.elements.uname.value; 580: 581: this.document.server.elements.udom.value 582: =this.document.client.elements.udom.value; 583: 584: uextkey=this.document.client.elements.uextkey.value; 585: lextkey=this.document.client.elements.lextkey.value; 586: initkeys(); 587: 588: if(this.document.server.action.substr(0,5) === 'http:'){ 589: this.document.server.elements.upass0.value 590: =getCrypted(this.document.client.elements.upass$now.value); 591: } else { 592: this.document.server.elements.upass0.value 593: =this.document.client.elements.upass$now.value; 594: } 595: 596: this.document.client.elements.uname.value=''; 597: this.document.client.elements.upass$now.value=''; 598: 599: this.document.server.submit(); 600: return false; 601: } 602: 603: function enableInput() { 604: this.document.client.elements.upass$now.removeAttribute("readOnly"); 605: this.document.client.elements.uname.removeAttribute("readOnly"); 606: this.document.client.elements.udom.removeAttribute("readOnly"); 607: return; 608: } 609: 610: // ]]> 611: </script> 612: 613: ENDSCRIPT 614: 615: my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing, 616: $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip); 617: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); 618: @hosts = &Apache::lonnet::current_machine_ids(); 619: $lonhost_in_use = $lonhost; 620: if (@hosts > 1) { 621: foreach my $hostid (@hosts) { 622: if (&Apache::lonnet::host_domain($hostid) eq $defdom) { 623: $lonhost_in_use = $hostid; 624: last; 625: } 626: } 627: } 628: $saml_prefix = $defdom.'.login.saml_'; 629: if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) { 630: $saml_landing = 1; 631: $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use}; 632: $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use}; 633: $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use}; 634: $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use}; 635: $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use}; 636: $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use}; 637: } 638: if ($saml_landing) { 639: if ($samlssotext eq '') { 640: $samlssotext = 'SSO Login'; 641: } 642: if ($samlnonsso eq '') { 643: $samlnonsso = 'Non-SSO Login'; 644: } 645: $js .= <<"ENDSAMLJS"; 646: 647: <script type="text/javascript"> 648: // <![CDATA[ 649: function toggleLClogin() { 650: if (document.getElementById('LC_standard_login')) { 651: if (document.getElementById('LC_standard_login').style.display == 'none') { 652: document.getElementById('LC_standard_login').style.display = 'inline-block'; 653: if (document.getElementById('LC_login_text')) { 654: document.getElementById('LC_login_text').innerHTML = '$samlnonsso'; 655: } 656: if (document.getElementById('LC_SSO_login')) { 657: document.getElementById('LC_SSO_login').style.display = 'none'; 658: } 659: } else { 660: document.getElementById('LC_standard_login').style.display = 'none'; 661: if (document.getElementById('LC_login_text')) { 662: document.getElementById('LC_login_text').innerHTML = '$samlssotext'; 663: } 664: if (document.getElementById('LC_SSO_login')) { 665: document.getElementById('LC_SSO_login').style.display = 'inline-block'; 666: } 667: } 668: } 669: return; 670: } 671: 672: // ]]> 673: </script> 674: 675: ENDSAMLJS 676: } 677: 678: # --------------------------------------------------- Print login screen header 679: 680: my %add_entries = ( 681: bgcolor => "$mainbg", 682: text => "$font", 683: link => "$link", 684: vlink => "$vlink", 685: alink => "$alink", 686: onload => 'javascript:enableInput();',); 687: 688: my ($headextra,$headextra_exempt); 689: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; 690: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; 691: if ($headextra) { 692: my $omitextra; 693: if ($headextra_exempt ne '') { 694: my @exempt = split(',',$headextra_exempt); 695: my $ip = &Apache::lonnet::get_requestor_ip(); 696: if (grep(/^\Q$ip\E$/,@exempt)) { 697: $omitextra = 1; 698: } 699: } 700: unless ($omitextra) { 701: my $confname = $defdom.'-domainconfig'; 702: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) { 703: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra)); 704: unless ($extra eq '-1') { 705: $js .= "\n".$extra."\n"; 706: } 707: } 708: } 709: } 710: 711: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 712: { 'redirect' => [$expire,'/adm/roles'], 713: 'add_entries' => \%add_entries, 714: 'only_body' => 1,})); 715: 716: # ----------------------------------------------------------------------- Texts 717: 718: my %lt=&Apache::lonlocal::texthash( 719: 'un' => 'Username', 720: 'pw' => 'Password', 721: 'dom' => 'Domain', 722: 'perc' => 'percent', 723: 'load' => 'Server Load', 724: 'userload' => 'User Load', 725: 'catalog' => 'Course/Community Catalog', 726: 'log' => 'Log in', 727: 'help' => 'Log-in Help', 728: 'serv' => 'Server', 729: 'servadm' => 'Server Administration', 730: 'helpdesk' => 'Contact Helpdesk', 731: 'forgotpw' => 'Forgot password?', 732: 'newuser' => 'New User?', 733: 'change' => 'Change?', 734: ); 735: # -------------------------------------------------- Change password field name 736: 737: my $forgotpw = &forgotpwdisplay(%lt); 738: $forgotpw .= '<br />' if $forgotpw; 739: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); 740: if ($loginhelp) { 741: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />'; 742: } 743: 744: # ---------------------------------------------------- Serve out DES JavaScript 745: { 746: my $jsh=Apache::File->new($include."/londes.js"); 747: $r->print(<$jsh>); 748: } 749: # ---------------------------------------------------------- Serve rest of page 750: 751: $r->print( 752: '<div class="LC_Box"' 753: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 754: ); 755: 756: $r->print(<<ENDSERVERFORM); 757: <form name="server" action="/adm/authenticate" method="post" target="_top"> 758: <input type="hidden" name="logtoken" value="$logtoken" /> 759: <input type="hidden" name="serverid" value="$lonhost" /> 760: <input type="hidden" name="uname" value="" /> 761: <input type="hidden" name="upass0" value="" /> 762: <input type="hidden" name="udom" value="" /> 763: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 764: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 765: </form> 766: ENDSERVERFORM 767: my $coursecatalog; 768: if (($showcoursecat eq '') || ($showcoursecat)) { 769: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 770: } 771: my $newuserlink; 772: if ($shownewuserlink) { 773: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 774: } 775: my $logintitle = 776: '<h2 class="LC_hcell"' 777: .' style="background:'.$loginbox_header_bgcol.';' 778: .' color:'.$loginbox_header_textcol.'">' 779: .$lt{'log'} 780: .'</h2>'; 781: 782: my $noscript_warning='<noscript><span class="LC_warning"><b>' 783: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 784: .'</b></span></noscript>'; 785: my $helpdeskscript; 786: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 787: $authdomain,\$helpdeskscript, 788: $showhelpdesk,\@possdoms); 789: 790: my $mobileargs; 791: if ($clientmobile) { 792: $mobileargs = 'autocapitalize="off" autocorrect="off"'; 793: } 794: my $loginform=(<<LFORM); 795: <form name="client" action="" onsubmit="return(send())" id="lclogin"> 796: <input type="hidden" name="lextkey" value="$lextkey" /> 797: <input type="hidden" name="uextkey" value="$uextkey" /> 798: <b><label for="uname">$lt{'un'}</label>:</b><br /> 799: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br /> 800: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 801: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 802: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 803: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br /> 804: <input type="submit" value="$lt{'log'}" /> 805: </form> 806: LFORM 807: 808: if ($showbanner) { 809: $r->print(<<HEADER); 810:  811: <div style="background:$pgbg;margin:0;width:100%;"> 812: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" /> 813: </div> 814: HEADER 815: } 816: 817: my $stdauthformstyle = 'inline-block'; 818: my $ssoauthstyle = 'none'; 819: my $logintype; 820: $r->print('<div style="float:left;margin-top:0;">'); 821: if ($saml_landing) { 822: $ssoauthstyle = 'inline-block'; 823: $stdauthformstyle = 'none'; 824: $logintype = $samlssotext; 825: my $ssologin = '/adm/sso'; 826: if ($samlssourl ne '') { 827: $ssologin = $samlssourl; 828: } 829: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 830: my $querystring; 831: if ($env{'form.firsturl'} ne '') { 832: $querystring = 'origurl='; 833: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 834: $querystring .= &uri_escape_utf8($env{'form.firsturl'}); 835: } else { 836: $querystring .= &uri_escape($env{'form.firsturl'}); 837: } 838: $querystring = &HTML::Entities::encode($querystring,"'"); 839: } 840: if ($env{'form.ltoken'} ne '') { 841: $querystring .= (($querystring eq '')?'':'&') . 'ltoken='. 842: &HTML::Entities::encode(&uri_escape($env{'form.ltoken'})); 843: } elsif ($env{'form.linkkey'}) { 844: $querystring .= (($querystring eq '')?'':'&') . 'linkkey='. 845: &HTML::Entities::encode(&uri_escape($env{'form.linkkey'})); 846: } 847: if ($querystring ne '') { 848: $ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring; 849: } 850: } elsif ($logtoken ne '') { 851: $ssologin .= (($ssologin=~/\?/)?'&':'?') . 'logtoken='.$logtoken; 852: } 853: my $ssohref; 854: if ($samlssoimg ne '') { 855: $ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'"><img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" /></a>'; 856: } else { 857: $ssohref = '<a href="'.$ssologin.'">'.$samlssotext.'</a>'; 858: } 859: if (($env{'form.saml'} eq 'no') || 860: (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) { 861: $ssoauthstyle = 'none'; 862: $stdauthformstyle = 'inline-block'; 863: $logintype = $samlnonsso; 864: } 865: $r->print(<<ENDSAML); 866: <p> 867: Log-in type: 868: <span style="font-weight:bold" id="LC_login_text">$logintype</span><br /> 869: <span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span> 870: </p> 871: <div style="display:$ssoauthstyle" id="LC_SSO_login"> 872: <div class="LC_Box" style="padding-top: 10px;"> 873: $ssohref 874: $noscript_warning 875: </div> 876: <div class="LC_Box" style="padding-top: 10px;"> 877: $loginhelp 878: $contactblock 879: $coursecatalog 880: </div> 881: </div> 882: ENDSAML 883: } else { 884: if ($env{'form.ltoken'}) { 885: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 886: delete($env{'form.ltoken'}); 887: } 888: } 889: 890: $r->print(<<ENDLOGIN); 891: <div style="display:$stdauthformstyle;" id="LC_standard_login"> 892: <div class="LC_Box" style="background:$loginbox_bg;"> 893: $logintitle 894: $loginform 895: $noscript_warning 896: </div> 897: 898: <div class="LC_Box" style="padding-top: 10px;"> 899: $loginhelp 900: $forgotpw 901: $contactblock 902: $newuserlink 903: $coursecatalog 904: </div> 905: </div> 906: 907: ENDLOGIN 908: $r->print('</div><div>'."\n"); 909: if ($showmainlogo) { 910: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n"); 911: } 912: $r->print(<<ENDTOP); 913: $announcements 914: </div> 915: <hr style="clear:both;" /> 916: ENDTOP 917: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 918: $domainrow = <<"END"; 919: <tr> 920: <td align="left" valign="top"> 921: <small><b>$lt{'dom'}: </b></small> 922: </td> 923: <td align="left" valign="top"> 924: <small><tt> $domain</tt></small> 925: </td> 926: </tr> 927: END 928: $serverrow = <<"END"; 929: <tr> 930: <td align="left" valign="top"> 931: <small><b>$lt{'serv'}: </b></small> 932: </td> 933: <td align="left" valign="top"> 934: <small><tt> $lonhost ($role)</tt></small> 935: </td> 936: </tr> 937: END 938: if ($loadlim) { 939: $loadrow = <<"END"; 940: <tr> 941: <td align="left" valign="top"> 942: <small><b>$lt{'load'}: </b></small> 943: </td> 944: <td align="left" valign="top"> 945: <small><tt> $loadpercent $lt{'perc'}</tt></small> 946: </td> 947: </tr> 948: END 949: } 950: if ($uloadlim) { 951: $userloadrow = <<"END"; 952: <tr> 953: <td align="left" valign="top"> 954: <small><b>$lt{'userload'}: </b></small> 955: </td> 956: <td align="left" valign="top"> 957: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 958: </td> 959: </tr> 960: END 961: } 962: if (($version ne '') && ($version ne '')) { 963: $versionrow = <<"END"; 964: <tr> 965: <td colspan="2" align="left"> 966: <small>$version</small> 967: </td> 968: </tr> 969: END 970: } 971: 972: $r->print(<<ENDDOCUMENT); 973: <div style="float: left;"> 974: <table border="0" cellspacing="0" cellpadding="0"> 975: $domainrow 976: $serverrow 977: $loadrow 978: $userloadrow 979: $versionrow 980: </table> 981: </div> 982: <div style="float: right;"> 983: $domainlogo 984: </div> 985: <br style="clear:both;" /> 986: </div> 987: 988: <script type="text/javascript"> 989: // <![CDATA[ 990: // the if prevents the script error if the browser can not handle this 991: if ( document.client.uname ) { document.client.uname.focus(); } 992: // ]]> 993: </script> 994: $helpdeskscript 995: 996: ENDDOCUMENT 997: my %endargs = ( 'noredirectlink' => 1, ); 998: $r->print(&Apache::loncommon::end_page(\%endargs)); 999: return OK; 1000: } 1001: 1002: sub check_loginvia { 1003: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot,$linkkey) = @_; 1004: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') { 1005: return; 1006: } 1007: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 1008: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 1009: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 1010: my $output; 1011: if ($loginvia ne '') { 1012: my $noredirect; 1013: my $ip = &Apache::lonnet::get_requestor_ip(); 1014: if ($ip eq '127.0.0.1') { 1015: $noredirect = 1; 1016: } else { 1017: if ($loginvia_exempt ne '') { 1018: my @exempt = split(',',$loginvia_exempt); 1019: if (grep(/^\Q$ip\E$/,@exempt)) { 1020: $noredirect = 1; 1021: } 1022: } 1023: } 1024: unless ($noredirect) { 1025: my ($newhost,$path); 1026: if ($loginvia =~ /:/) { 1027: ($newhost,$path) = split(':',$loginvia); 1028: } else { 1029: $newhost = $loginvia; 1030: } 1031: if ($newhost ne $lonhost) { 1032: if (&Apache::lonnet::hostname($newhost) ne '') { 1033: if ($balcookie) { 1034: my ($balancer,$cookie) = split(/:/,$balcookie); 1035: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) { 1036: my ($udom,$uname,$cookieid) = ($1,$2,$3); 1037: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') { 1038: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) { 1039: while (my $filename=readdir($dh)) { 1040: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) { 1041: my $handle = $1; 1042: my %hash = 1043: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir, 1044: ['request.balancercookie', 1045: 'user.linkedenv']); 1046: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") { 1047: if (unlink("$lonidsdir/$filename")) { 1048: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && 1049: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") && 1050: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) { 1051: unlink("$lonidsdir/$hash{'user.linkedenv'}.id"); 1052: } 1053: } 1054: } 1055: last; 1056: } 1057: } 1058: closedir($dh); 1059: } 1060: } 1061: } 1062: } 1063: $output = &redirect_page($newhost,$path,$linkprot,$linkkey); 1064: } 1065: } 1066: } 1067: } 1068: return $output; 1069: } 1070: 1071: sub redirect_page { 1072: my ($desthost,$path,$linkprot,$linkkey) = @_; 1073: my $hostname = &Apache::lonnet::hostname($desthost); 1074: my $protocol = $Apache::lonnet::protocol{$desthost}; 1075: $protocol = 'http' if ($protocol ne 'https'); 1076: unless ($path =~ m{^/}) { 1077: $path = '/'.$path; 1078: } 1079: my $url = $protocol.'://'.$hostname.$path; 1080: if ($env{'form.firsturl'} ne '') { 1081: my $querystring; 1082: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) { 1083: $querystring = &uri_escape_utf8($env{'form.firsturl'}); 1084: } else { 1085: $querystring = &uri_escape($env{'form.firsturl'}); 1086: } 1087: $querystring = &HTML::Entities::encode($querystring,"'"); 1088: $url .='?firsturl='.$querystring; 1089: } 1090: if ($linkprot) { 1091: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost); 1092: if ($ltoken) { 1093: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken; 1094: } 1095: } elsif ($linkkey) { 1096: $url .= (($url =~ /\?/) ? '&' : '?').'linkkey='.&uri_escape($linkkey); 1097: } 1098: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 1099: {'redirect' => [0,$url],}); 1100: my $end_page = &Apache::loncommon::end_page(); 1101: return $start_page.$end_page; 1102: } 1103: 1104: sub contactdisplay { 1105: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, 1106: $possdoms) = @_; 1107: my $contactblock; 1108: my $origmail; 1109: if (ref($possdoms) eq 'ARRAY') { 1110: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { 1111: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 1112: } 1113: } 1114: my $requestmail = 1115: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 1116: $authdomain,$origmail); 1117: unless ($showhelpdesk eq '0') { 1118: if ($requestmail =~ m/[^\@]+\@[^\@]+/) { 1119: $showhelpdesk = 1; 1120: } else { 1121: $showhelpdesk = 0; 1122: } 1123: } 1124: if ($servadm && $showadminmail) { 1125: $contactblock .= $$lt{'servadm'}.':<br />'. 1126: '<tt>'.$servadm.'</tt><br />'; 1127: } 1128: if ($showhelpdesk) { 1129: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 1130: my $thisurl = &escape('/adm/login'); 1131: $$helpdeskscript = <<"ENDSCRIPT"; 1132: <script type="text/javascript"> 1133: // <![CDATA[ 1134: function helpdesk() { 1135: var possdom = document.client.udom.value; 1136: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),''); 1137: if (codedom == '') { 1138: codedom = "$authdomain"; 1139: } 1140: var querystr = "origurl=$thisurl&codedom="+codedom; 1141: document.location.href = "/adm/helpdesk?"+querystr; 1142: return; 1143: } 1144: // ]]> 1145: </script> 1146: ENDSCRIPT 1147: } 1148: return $contactblock; 1149: } 1150: 1151: sub forgotpwdisplay { 1152: my (%lt) = @_; 1153: my $prompt_for_resetpw = 1; 1154: if ($prompt_for_resetpw) { 1155: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 1156: } 1157: return; 1158: } 1159: 1160: sub coursecatalog_link { 1161: my ($linkname) = @_; 1162: return <<"END"; 1163: <a href="/adm/coursecatalog">$linkname</a> 1164: END 1165: } 1166: 1167: sub newuser_link { 1168: my ($linkname) = @_; 1169: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 1170: } 1171: 1172: sub decode_token { 1173: my ($info) = @_; 1174: my ($firsturl,@rest)=split(/\&/,$info); 1175: my %form; 1176: if ($firsturl ne '') { 1177: $form{'firsturl'} = &unescape($firsturl); 1178: } 1179: foreach my $item (@rest) { 1180: my ($key,$value) = split(/=/,$item); 1181: $form{$key} = &unescape($value); 1182: } 1183: return %form; 1184: } 1185: 1186: 1; 1187: __END__