loncom/auth/lonlogin.pm - view

File: [LON-CAPA] / loncom / auth / lonlogin.pm
Revision 1.181: download - view: text, annotated - select for diffs
Mon Oct 26 01:52:15 2020 UTC (3 years, 6 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD

- Prevent duplicates in list of other potential servers.

1: # The LearningOnline Network 2: # Login Screen 3: # 4: # $Id: lonlogin.pm,v 1.181 2020/10/26 01:52:15 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: my $url = $protocol.'://'.$hostname.$dest; 147: my $start_page = 148: &Apache::loncommon::start_page('Switching Server ...',undef, 149: {'redirect' => [0,$url],}); 150: my $end_page = &Apache::loncommon::end_page(); 151: $r->print($start_page.$end_page); 152: return OK; 153: } 154: } 155: 156: # 157: # Check if a LON-CAPA load balancer sent user here because user's browser sent 158: # it a balancer cookie for an active session on this server. 159: # 160: 161: my ($balcookie,$linkprot,$linkkey); 162: if ($env{'form.btoken'}) { 163: my %info = &Apache::lonnet::tmpget($env{'form.btoken'}); 164: $balcookie = $info{'balcookie'}; 165: if ($balcookie) { 166: if ($info{'linkprot'}) { 167: $linkprot = $info{'linkprot'}; 168: } elsif ($info{'linkkey'}) { 169: $linkkey = $info{'linkkey'}; 170: } 171: } 172: &Apache::lonnet::tmpdel($env{'form.btoken'}); 173: delete($env{'form.btoken'}); 174: } 175: 176: # 177: # If browser sent an old cookie for which the session file had been removed 178: # check if configuration for user's domain has a portal URL set. If so 179: # switch user's log-in to the portal. 180: # 181: 182: if (($handle eq '') && ($userdom ne '')) { 183: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom); 184: if ($domdefaults{'portal_def'} =~ /^https?\:/) { 185: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 186: {'redirect' => [0,$domdefaults{'portal_def'}],}); 187: my $end_page = &Apache::loncommon::end_page(); 188: $r->print($start_page.$end_page); 189: return OK; 190: } 191: } 192: 193: # -------------------------------- Prevent users from attempting to login twice 194: if ($handle ne '') { 195: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle); 196: my $start_page = 197: &Apache::loncommon::start_page('Already logged in'); 198: my $end_page = 199: &Apache::loncommon::end_page(); 200: my $dest = '/adm/roles'; 201: if ($env{'form.firsturl'} ne '') { 202: $dest = $env{'form.firsturl'}; 203: } 204: if (($env{'form.ltoken'}) || ($linkprot)) { 205: unless ($linkprot) { 206: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 207: $linkprot = $info{'linkprot'}; 208: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'}); 209: delete($env{'form.ltoken'}); 210: } 211: if ($linkprot) { 212: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2); 213: if ($env{'user.linkprotector'}) { 214: my @protectors = split(/,/,$env{'user.linkprotector'}); 215: unless (grep(/^\Q$linkprotector\E$/,@protectors)) { 216: push(@protectors,$linkprotector); 217: @protectors = sort { $a <=> $b } @protectors; 218: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)}); 219: } 220: } else { 221: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector }); 222: } 223: if ($env{'user.linkproturi'}) { 224: my @proturis = split(/,/,$env{'user.linkproturi'}); 225: unless (grep(/^\Q$deeplink\E$/,@proturis)) { 226: push(@proturis,$deeplink); 227: @proturis = sort @proturis; 228: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)}); 229: } 230: } else { 231: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink}); 232: } 233: } 234: } elsif (($env{'form.linkkey'}) || ($linkkey)) { 235: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) { 236: if ($linkkey eq '') { 237: $linkkey = $env{'form.linkkey'}; 238: } 239: if ($env{'user.deeplinkkey'}) { 240: my @linkkeys = split(/,/,$env{'user.deeplinkkey'}); 241: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) { 242: push(@linkkeys,$linkkey); 243: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))}); 244: } 245: } else { 246: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey}); 247: } 248: my $deeplink = $env{'form.firsturl'}; 249: if ($env{'user.keyedlinkuri'}) { 250: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'}); 251: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) { 252: push(@keyeduris,$deeplink); 253: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))}); 254: } 255: } else { 256: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink}); 257: } 258: } 259: } 260: $r->print( 261: $start_page 262: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>' 263: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].', 264: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>' 265: .$end_page 266: ); 267: return OK; 268: } 269: 270: # ---------------------------------------------------- No valid token, continue 271: 272: # ---------------------------- Not possible to really login to domain "public" 273: if ($env{'form.domain'} eq 'public') { 274: $env{'form.domain'}=''; 275: $env{'form.username'}=''; 276: } 277: 278: # ------ Is this page requested because /adm/migrateuser detected an IP change? 279: my %sessiondata; 280: if ($env{'form.iptoken'}) { 281: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'}); 282: unless ($sessiondata{'sessionserver'}) { 283: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'}); 284: delete($env{'form.iptoken'}); 285: } 286: } 287: # ----------------------------------------------------------- Process Interface 288: $env{'form.interface'}=~s/\W//g; 289: 290: (undef,undef,undef,undef,undef,undef,my $clientmobile) = 291: &Apache::loncommon::decode_user_agent(); 292: 293: my $iconpath= 294: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL')); 295: 296: my $domain = &Apache::lonnet::default_login_domain(); 297: my $defdom = $domain; 298: if ($lonhost ne '') { 299: unless ($sessiondata{'sessionserver'}) { 300: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot); 301: if ($redirect) { 302: $r->print($redirect); 303: return OK; 304: } 305: } 306: } 307: 308: if (($sessiondata{'domain'}) && 309: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) { 310: $domain=$sessiondata{'domain'}; 311: } elsif (($env{'form.domain'}) && 312: (&Apache::lonnet::domain($env{'form.domain'},'description'))) { 313: $domain=$env{'form.domain'}; 314: } 315: 316: my $role = $r->dir_config('lonRole'); 317: my $loadlim = $r->dir_config('lonLoadLim'); 318: my $uloadlim= $r->dir_config('lonUserLoadLim'); 319: my $servadm = $r->dir_config('lonAdmEMail'); 320: my $tabdir = $r->dir_config('lonTabDir'); 321: my $include = $r->dir_config('lonIncludes'); 322: my $expire = $r->dir_config('lonExpire'); 323: my $version = $r->dir_config('lonVersion'); 324: my $host_name = &Apache::lonnet::hostname($lonhost); 325: 326: # --------------------------------------------- Default values for login fields 327: 328: my ($authusername,$authdomain); 329: if ($sessiondata{'username'}) { 330: $authusername=$sessiondata{'username'}; 331: } else { 332: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'}); 333: $authusername=($env{'form.username'}?$env{'form.username'}:''); 334: } 335: if ($sessiondata{'domain'}) { 336: $authdomain=$sessiondata{'domain'}; 337: } else { 338: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'}); 339: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain); 340: } 341: 342: # ---------------------------------------------------------- Determine own load 343: my $loadavg; 344: { 345: my $loadfile=Apache::File->new('/proc/loadavg'); 346: $loadavg=<$loadfile>; 347: } 348: $loadavg =~ s/\s.*//g; 349: 350: my ($loadpercent,$userloadpercent); 351: if ($loadlim) { 352: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim); 353: } 354: if ($uloadlim) { 355: $userloadpercent=&Apache::lonnet::userload(); 356: } 357: 358: my $firsturl= 359: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'}); 360: 361: # ----------------------------------------------------------- Get announcements 362: my $announcements=&Apache::lonnet::getannounce(); 363: # -------------------------------------------------------- Set login parameters 364: 365: my @hexstr=('0','1','2','3','4','5','6','7', 366: '8','9','a','b','c','d','e','f'); 367: my $lkey=''; 368: for (0..7) { 369: $lkey.=$hexstr[rand(15)]; 370: } 371: 372: my $ukey=''; 373: for (0..7) { 374: $ukey.=$hexstr[rand(15)]; 375: } 376: 377: my $lextkey=hex($lkey); 378: if ($lextkey>2147483647) { $lextkey-=4294967296; } 379: 380: my $uextkey=hex($ukey); 381: if ($uextkey>2147483647) { $uextkey-=4294967296; } 382: 383: # -------------------------------------------------------- Store away log token 384: my $tokenextras; 385: if ($env{'form.role'}) { 386: $tokenextras = '&role='.&escape($env{'form.role'}); 387: } 388: if ($env{'form.symb'}) { 389: if (!$tokenextras) { 390: $tokenextras = '&'; 391: } 392: $tokenextras .= '&symb='.&escape($env{'form.symb'}); 393: } 394: if ($env{'form.iptoken'}) { 395: if (!$tokenextras) { 396: $tokenextras = '&&'; 397: } 398: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'}); 399: } 400: if ($env{'form.ltoken'}) { 401: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'}); 402: &Apache::lonnet::tmpdel($env{'form.ltoken'}); 403: delete($env{'form.ltoken'}); 404: if ($info{'linkprot'}) { 405: if (!$tokenextras) { 406: $tokenextras = '&&&'; 407: } 408: $tokenextras .= '&linkprot='.&escape($info{'linkprot'}); 409: } 410: } elsif ($env{'form.linkkey'}) { 411: if (!$tokenextras) { 412: $tokenextras = '&&&'; 413: } 414: $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'}); 415: } 416: my $logtoken=Apache::lonnet::reply( 417: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras, 418: $lonhost); 419: 420: # -- If we cannot talk to ourselves, or hostID does not map to a hostname 421: # we are in serious trouble 422: 423: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) { 424: if ($logtoken eq 'no_such_host') { 425: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab'); 426: } 427: my $spares=''; 428: my (@sparehosts,%spareservers); 429: my $sparesref = &Apache::lonnet::this_host_spares($defdom); 430: if (ref($sparesref) eq 'HASH') { 431: foreach my $key (keys(%{$sparesref})) { 432: if (ref($sparesref->{$key}) eq 'ARRAY') { 433: my @sorted = sort { &Apache::lonnet::hostname($a) cmp 434: &Apache::lonnet::hostname($b); 435: } @{$sparesref->{$key}}; 436: if (@sorted) { 437: if ($key eq 'primary') { 438: unshift(@sparehosts,@sorted); 439: } elsif ($key eq 'default') { 440: push(@sparehosts,@sorted); 441: } 442: } 443: } 444: } 445: } 446: foreach my $hostid (@sparehosts) { 447: next if ($hostid eq $lonhost); 448: my $hostname = &Apache::lonnet::hostname($hostid); 449: next if (($hostname eq '') || ($spareservers{$hostname})); 450: $spareservers{$hostname} = 1; 451: my $protocol = $Apache::lonnet::protocol{$hostid}; 452: $protocol = 'http' if ($protocol ne 'https'); 453: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'. 454: $hostname. 455: '/adm/login?domain='.$authdomain.'">'. 456: $hostname.'</a>'. 457: ' '.&mt('(preferred)').'</span>'.$/; 458: } 459: if ($spares) { 460: $spares.= '<br />'; 461: } 462: my %all_hostnames = &Apache::lonnet::all_hostnames(); 463: foreach my $hostid (sort 464: { 465: &Apache::lonnet::hostname($a) cmp 466: &Apache::lonnet::hostname($b); 467: } 468: keys(%all_hostnames)) { 469: next if ($hostid eq $lonhost); 470: my $hostname = &Apache::lonnet::hostname($hostid); 471: next if (($hostname eq '') || ($spareservers{$hostname})); 472: $spareservers{$hostname} = 1; 473: my $protocol = $Apache::lonnet::protocol{$hostid}; 474: $protocol = 'http' if ($protocol ne 'https'); 475: $spares.='<br /><a href="'.$protocol.'://'. 476: $hostname. 477: '/adm/login?domain='.$authdomain.'">'. 478: $hostname.'</a>'; 479: } 480: $r->print( 481: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">' 482: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">' 483: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>' 484: .&mt('The LearningOnline Network with CAPA') 485: .'</title></head>' 486: .'<body bgcolor="#FFFFFF">' 487: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>' 488: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />' 489: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'); 490: if ($spares) { 491: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:') 492: .'</p>' 493: .$spares); 494: } 495: $r->print('</body>' 496: .'</html>' 497: ); 498: return OK; 499: } 500: 501: # ----------------------------------------------- Apparently we are in business 502: $servadm=~s/\,/\<br \/\>/g; 503: 504: # ----------------------------------------------------------- Front page design 505: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain); 506: my $font=&Apache::loncommon::designparm('login.font',$domain); 507: my $link=&Apache::loncommon::designparm('login.link',$domain); 508: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain); 509: my $alink=&Apache::loncommon::designparm('login.alink',$domain); 510: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain); 511: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain); 512: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain); 513: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain); 514: my $logo=&Apache::loncommon::designparm('login.logo',$domain); 515: my $img=&Apache::loncommon::designparm('login.img',$domain); 516: my $domainlogo=&Apache::loncommon::domainlogo($domain); 517: my $showbanner = 1; 518: my $showmainlogo = 1; 519: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) { 520: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain); 521: } 522: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) { 523: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain); 524: } 525: my $showadminmail; 526: my @possdoms = &Apache::lonnet::current_machine_domains(); 527: if (grep(/^\Q$domain\E$/,@possdoms)) { 528: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain); 529: } 530: my $showcoursecat = 531: &Apache::loncommon::designparm('login.coursecatalog',$domain); 532: my $shownewuserlink = 533: &Apache::loncommon::designparm('login.newuser',$domain); 534: my $showhelpdesk = 535: &Apache::loncommon::designparm('login.helpdesk',$domain); 536: my $now=time; 537: my $js = (<<ENDSCRIPT); 538: 539: <script type="text/javascript" language="JavaScript"> 540: // <![CDATA[ 541: function send() 542: { 543: this.document.server.elements.uname.value 544: =this.document.client.elements.uname.value; 545: 546: this.document.server.elements.udom.value 547: =this.document.client.elements.udom.value; 548: 549: uextkey=this.document.client.elements.uextkey.value; 550: lextkey=this.document.client.elements.lextkey.value; 551: initkeys(); 552: 553: if(this.document.server.action.substr(0,5) === 'http:'){ 554: this.document.server.elements.upass0.value 555: =getCrypted(this.document.client.elements.upass$now.value); 556: } else { 557: this.document.server.elements.upass0.value 558: =this.document.client.elements.upass$now.value; 559: } 560: 561: this.document.client.elements.uname.value=''; 562: this.document.client.elements.upass$now.value=''; 563: 564: this.document.server.submit(); 565: return false; 566: } 567: 568: function enableInput() { 569: this.document.client.elements.upass$now.removeAttribute("readOnly"); 570: this.document.client.elements.uname.removeAttribute("readOnly"); 571: this.document.client.elements.udom.removeAttribute("readOnly"); 572: return; 573: } 574: 575: // ]]> 576: </script> 577: 578: ENDSCRIPT 579: 580: # --------------------------------------------------- Print login screen header 581: 582: my %add_entries = ( 583: bgcolor => "$mainbg", 584: text => "$font", 585: link => "$link", 586: vlink => "$vlink", 587: alink => "$alink", 588: onload => 'javascript:enableInput();',); 589: 590: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf); 591: @hosts = &Apache::lonnet::current_machine_ids(); 592: $lonhost_in_use = $lonhost; 593: if (@hosts > 1) { 594: foreach my $hostid (@hosts) { 595: if (&Apache::lonnet::host_domain($hostid) eq $defdom) { 596: $lonhost_in_use = $hostid; 597: last; 598: } 599: } 600: } 601: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom); 602: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use}; 603: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use}; 604: if ($headextra) { 605: my $omitextra; 606: if ($headextra_exempt ne '') { 607: my @exempt = split(',',$headextra_exempt); 608: my $ip = $ENV{'REMOTE_ADDR'}; 609: if (grep(/^\Q$ip\E$/,@exempt)) { 610: $omitextra = 1; 611: } 612: } 613: unless ($omitextra) { 614: my $confname = $defdom.'-domainconfig'; 615: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) { 616: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra)); 617: unless ($extra eq '-1') { 618: $js .= "\n".$extra."\n"; 619: } 620: } 621: } 622: } 623: 624: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js, 625: { 'redirect' => [$expire,'/adm/roles'], 626: 'add_entries' => \%add_entries, 627: 'only_body' => 1,})); 628: 629: # ----------------------------------------------------------------------- Texts 630: 631: my %lt=&Apache::lonlocal::texthash( 632: 'un' => 'Username', 633: 'pw' => 'Password', 634: 'dom' => 'Domain', 635: 'perc' => 'percent', 636: 'load' => 'Server Load', 637: 'userload' => 'User Load', 638: 'catalog' => 'Course/Community Catalog', 639: 'log' => 'Log in', 640: 'help' => 'Log-in Help', 641: 'serv' => 'Server', 642: 'servadm' => 'Server Administration', 643: 'helpdesk' => 'Contact Helpdesk', 644: 'forgotpw' => 'Forgot password?', 645: 'newuser' => 'New User?', 646: ); 647: # -------------------------------------------------- Change password field name 648: 649: my $forgotpw = &forgotpwdisplay(%lt); 650: $forgotpw .= '<br />' if $forgotpw; 651: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain); 652: if ($loginhelp) { 653: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />'; 654: } 655: 656: # ---------------------------------------------------- Serve out DES JavaScript 657: { 658: my $jsh=Apache::File->new($include."/londes.js"); 659: $r->print(<$jsh>); 660: } 661: # ---------------------------------------------------------- Serve rest of page 662: 663: $r->print( 664: '<div class="LC_Box"' 665: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">' 666: ); 667: 668: $r->print(<<ENDSERVERFORM); 669: <form name="server" action="/adm/authenticate" method="post" target="_top"> 670: <input type="hidden" name="logtoken" value="$logtoken" /> 671: <input type="hidden" name="serverid" value="$lonhost" /> 672: <input type="hidden" name="uname" value="" /> 673: <input type="hidden" name="upass0" value="" /> 674: <input type="hidden" name="udom" value="" /> 675: <input type="hidden" name="localpath" value="$env{'form.localpath'}" /> 676: <input type="hidden" name="localres" value="$env{'form.localres'}" /> 677: </form> 678: ENDSERVERFORM 679: my $coursecatalog; 680: if (($showcoursecat eq '') || ($showcoursecat)) { 681: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />'; 682: } 683: my $newuserlink; 684: if ($shownewuserlink) { 685: $newuserlink = &newuser_link($lt{'newuser'}).'<br />'; 686: } 687: my $logintitle = 688: '<h2 class="LC_hcell"' 689: .' style="background:'.$loginbox_header_bgcol.';' 690: .' color:'.$loginbox_header_textcol.'">' 691: .$lt{'log'} 692: .'</h2>'; 693: 694: my $noscript_warning='<noscript><span class="LC_warning"><b>' 695: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.') 696: .'</b></span></noscript>'; 697: my $helpdeskscript; 698: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail, 699: $authdomain,\$helpdeskscript, 700: $showhelpdesk,\@possdoms); 701: 702: my $mobileargs; 703: if ($clientmobile) { 704: $mobileargs = 'autocapitalize="off" autocorrect="off"'; 705: } 706: my $loginform=(<<LFORM); 707: <form name="client" action="" onsubmit="return(send())"> 708: <input type="hidden" name="lextkey" value="$lextkey" /> 709: <input type="hidden" name="uextkey" value="$uextkey" /> 710: <b><label for="uname">$lt{'un'}</label>:</b><br /> 711: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br /> 712: <b><label for="upass$now">$lt{'pw'}</label>:</b><br /> 713: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br /> 714: <b><label for="udom">$lt{'dom'}</label>:</b><br /> 715: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br /> 716: <input type="submit" value="$lt{'log'}" /> 717: </form> 718: LFORM 719: 720: if ($showbanner) { 721: $r->print(<<HEADER); 722:  723: <div style="background:$pgbg;margin:0;width:100%;"> 724: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" /> 725: </div> 726: HEADER 727: } 728: $r->print(<<ENDTOP); 729: <div style="float:left;margin-top:0;"> 730: <div class="LC_Box" style="background:$loginbox_bg;"> 731: $logintitle 732: $loginform 733: $noscript_warning 734: </div> 735: 736: <div class="LC_Box" style="padding-top: 10px;"> 737: $loginhelp 738: $forgotpw 739: $contactblock 740: $newuserlink 741: $coursecatalog 742: </div> 743: </div> 744: 745: <div> 746: ENDTOP 747: if ($showmainlogo) { 748: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n"); 749: } 750: $r->print(<<ENDTOP); 751: $announcements 752: </div> 753: <hr style="clear:both;" /> 754: ENDTOP 755: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow); 756: $domainrow = <<"END"; 757: <tr> 758: <td align="left" valign="top"> 759: <small><b>$lt{'dom'}: </b></small> 760: </td> 761: <td align="left" valign="top"> 762: <small><tt> $domain</tt></small> 763: </td> 764: </tr> 765: END 766: $serverrow = <<"END"; 767: <tr> 768: <td align="left" valign="top"> 769: <small><b>$lt{'serv'}: </b></small> 770: </td> 771: <td align="left" valign="top"> 772: <small><tt> $lonhost ($role)</tt></small> 773: </td> 774: </tr> 775: END 776: if ($loadlim) { 777: $loadrow = <<"END"; 778: <tr> 779: <td align="left" valign="top"> 780: <small><b>$lt{'load'}: </b></small> 781: </td> 782: <td align="left" valign="top"> 783: <small><tt> $loadpercent $lt{'perc'}</tt></small> 784: </td> 785: </tr> 786: END 787: } 788: if ($uloadlim) { 789: $userloadrow = <<"END"; 790: <tr> 791: <td align="left" valign="top"> 792: <small><b>$lt{'userload'}: </b></small> 793: </td> 794: <td align="left" valign="top"> 795: <small><tt> $userloadpercent $lt{'perc'}</tt></small> 796: </td> 797: </tr> 798: END 799: } 800: if (($version ne '') && ($version ne '')) { 801: $versionrow = <<"END"; 802: <tr> 803: <td colspan="2" align="left"> 804: <small>$version</small> 805: </td> 806: </tr> 807: END 808: } 809: 810: $r->print(<<ENDDOCUMENT); 811: <div style="float: left;"> 812: <table border="0" cellspacing="0" cellpadding="0"> 813: $domainrow 814: $serverrow 815: $loadrow 816: $userloadrow 817: $versionrow 818: </table> 819: </div> 820: <div style="float: right;"> 821: $domainlogo 822: </div> 823: <br style="clear:both;" /> 824: </div> 825: 826: <script type="text/javascript"> 827: // <![CDATA[ 828: // the if prevents the script error if the browser can not handle this 829: if ( document.client.uname ) { document.client.uname.focus(); } 830: // ]]> 831: </script> 832: $helpdeskscript 833: 834: ENDDOCUMENT 835: my %endargs = ( 'noredirectlink' => 1, ); 836: $r->print(&Apache::loncommon::end_page(\%endargs)); 837: return OK; 838: } 839: 840: sub check_loginvia { 841: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_; 842: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') { 843: return; 844: } 845: my %domconfhash = &Apache::loncommon::get_domainconf($domain); 846: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost}; 847: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost}; 848: my $output; 849: if ($loginvia ne '') { 850: my $noredirect; 851: my $ip = $ENV{'REMOTE_ADDR'}; 852: if ($ip eq '127.0.0.1') { 853: $noredirect = 1; 854: } else { 855: if ($loginvia_exempt ne '') { 856: my @exempt = split(',',$loginvia_exempt); 857: if (grep(/^\Q$ip\E$/,@exempt)) { 858: $noredirect = 1; 859: } 860: } 861: } 862: unless ($noredirect) { 863: my ($newhost,$path); 864: if ($loginvia =~ /:/) { 865: ($newhost,$path) = split(':',$loginvia); 866: } else { 867: $newhost = $loginvia; 868: } 869: if ($newhost ne $lonhost) { 870: if (&Apache::lonnet::hostname($newhost) ne '') { 871: if ($balcookie) { 872: my ($balancer,$cookie) = split(/:/,$balcookie); 873: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) { 874: my ($udom,$uname,$cookieid) = ($1,$2,$3); 875: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') { 876: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) { 877: while (my $filename=readdir($dh)) { 878: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) { 879: my $handle = $1; 880: my %hash = 881: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir, 882: ['request.balancercookie', 883: 'user.linkedenv']); 884: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") { 885: if (unlink("$lonidsdir/$filename")) { 886: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) && 887: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") && 888: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) { 889: unlink("$lonidsdir/$hash{'user.linkedenv'}.id"); 890: } 891: } 892: } 893: last; 894: } 895: } 896: closedir($dh); 897: } 898: } 899: } 900: } 901: $output = &redirect_page($newhost,$path,$linkprot); 902: } 903: } 904: } 905: } 906: return $output; 907: } 908: 909: sub redirect_page { 910: my ($desthost,$path,$linkprot) = @_; 911: my $hostname = &Apache::lonnet::hostname($desthost); 912: my $protocol = $Apache::lonnet::protocol{$desthost}; 913: $protocol = 'http' if ($protocol ne 'https'); 914: unless ($path =~ m{^/}) { 915: $path = '/'.$path; 916: } 917: my $url = $protocol.'://'.$hostname.$path; 918: if ($env{'form.firsturl'} ne '') { 919: $url .='?firsturl='.$env{'form.firsturl'}; 920: } 921: if ($linkprot) { 922: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost); 923: if ($ltoken) { 924: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken; 925: } 926: } 927: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef, 928: {'redirect' => [0,$url],}); 929: my $end_page = &Apache::loncommon::end_page(); 930: return $start_page.$end_page; 931: } 932: 933: sub contactdisplay { 934: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk, 935: $possdoms) = @_; 936: my $contactblock; 937: my $origmail; 938: if (ref($possdoms) eq 'ARRAY') { 939: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) { 940: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 941: } 942: } 943: my $requestmail = 944: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 945: $authdomain,$origmail); 946: unless ($showhelpdesk eq '0') { 947: if ($requestmail =~ m/[^\@]+\@[^\@]+/) { 948: $showhelpdesk = 1; 949: } else { 950: $showhelpdesk = 0; 951: } 952: } 953: if ($servadm && $showadminmail) { 954: $contactblock .= $$lt{'servadm'}.':<br />'. 955: '<tt>'.$servadm.'</tt><br />'; 956: } 957: if ($showhelpdesk) { 958: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />'; 959: my $thisurl = &escape('/adm/login'); 960: $$helpdeskscript = <<"ENDSCRIPT"; 961: <script type="text/javascript"> 962: // <![CDATA[ 963: function helpdesk() { 964: var possdom = document.client.udom.value; 965: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),''); 966: if (codedom == '') { 967: codedom = "$authdomain"; 968: } 969: var querystr = "origurl=$thisurl&codedom="+codedom; 970: document.location.href = "/adm/helpdesk?"+querystr; 971: return; 972: } 973: // ]]> 974: </script> 975: ENDSCRIPT 976: } 977: return $contactblock; 978: } 979: 980: sub forgotpwdisplay { 981: my (%lt) = @_; 982: my $prompt_for_resetpw = 1; 983: if ($prompt_for_resetpw) { 984: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>'; 985: } 986: return; 987: } 988: 989: sub coursecatalog_link { 990: my ($linkname) = @_; 991: return <<"END"; 992: <a href="/adm/coursecatalog">$linkname</a> 993: END 994: } 995: 996: sub newuser_link { 997: my ($linkname) = @_; 998: return '<a href="/adm/createaccount">'.$linkname.'</a>'; 999: } 1000: 1001: 1; 1002: __END__