1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.188 2021/10/06 19:28:55 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($r,['linkkey']);
64: }
65:
66: # -- check if they are a migrating user
67: if (defined($env{'form.token'})) {
68: return &Apache::migrateuser::handler($r);
69: }
70:
71: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
72: my ($handle,$lonidsdir,$expirepub,$userdom);
73: $lonidsdir=$r->dir_config('lonIDsDir');
74: unless ($r->header_only) {
75: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
76: if ($handle ne '') {
77: if ($handle=~/^publicuser\_/) {
78: unlink($r->dir_config('lonIDsDir')."/$handle.id");
79: undef($handle);
80: undef($userdom);
81: $expirepub = 1;
82: }
83: }
84: }
85:
86: &Apache::loncommon::no_cache($r);
87: &Apache::lonlocal::get_language_handle($r);
88: &Apache::loncommon::content_type($r,'text/html');
89: if ($expirepub) {
90: my $c = new CGI::Cookie(-name => 'lonPubID',
91: -value => '',
92: -expires => '-10y',);
93: $r->header_out('Set-cookie' => $c);
94: } elsif (($handle eq '') && ($userdom ne '')) {
95: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
96: foreach my $name (keys(%cookies)) {
97: next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
98: my $c = new CGI::Cookie(-name => $name,
99: -value => '',
100: -expires => '-10y',);
101: $r->headers_out->add('Set-cookie' => $c);
102: }
103: }
104: $r->send_http_header;
105: return OK if $r->header_only;
106:
107:
108: # Are we re-routing?
109: my $londocroot = $r->dir_config('lonDocRoot');
110: if (-e "$londocroot/lon-status/reroute.txt") {
111: &Apache::lonauth::reroute($r);
112: return OK;
113: }
114:
115: my $lonhost = $r->dir_config('lonHostID');
116:
117: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
118:
119: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
120: if ($found_server) {
121: my $hostname = &Apache::lonnet::hostname($found_server);
122: if ($hostname ne '') {
123: my $protocol = $Apache::lonnet::protocol{$found_server};
124: $protocol = 'http' if ($protocol ne 'https');
125: my $dest = '/adm/roles';
126: if ($env{'form.firsturl'} ne '') {
127: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
128: $dest = &uri_escape_utf8($env{'form.firsturl'});
129: } else {
130: $dest = &uri_escape($env{'form.firsturl'});
131: }
132: $dest = &HTML::Entities::encode($dest,"'");
133: }
134: my %info = (
135: balcookie => $lonhost.':'.$balancer_cookie,
136: );
137: if ($env{'form.ltoken'}) {
138: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
139: if ($link_info{'linkprot'}) {
140: $info{'linkprot'} = $link_info{'linkprot'};
141: }
142: &Apache::lonnet::tmpdel($env{'form.ltoken'});
143: delete($env{'form.ltoken'});
144: } elsif ($env{'form.linkkey'}) {
145: $info{'linkkey'} = $env{'form.linkkey'};
146: delete($env{'form.linkkey'});
147: }
148: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server);
149: if ($balancer_token) {
150: $dest .= (($dest=~/\?/)?'&':'?') . 'btoken='.$balancer_token;
151: }
152: unless ($found_server eq $lonhost) {
153: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server);
154: $hostname = $alias if ($alias ne '');
155: }
156: my $url = $protocol.'://'.$hostname.$dest;
157: my $start_page =
158: &Apache::loncommon::start_page('Switching Server ...',undef,
159: {'redirect' => [0,$url],});
160: my $end_page = &Apache::loncommon::end_page();
161: $r->print($start_page.$end_page);
162: return OK;
163: }
164: }
165:
166: #
167: # Check if a LON-CAPA load balancer sent user here because user's browser sent
168: # it a balancer cookie for an active session on this server.
169: #
170:
171: my ($balcookie,$linkprot,$linkkey);
172: if ($env{'form.btoken'}) {
173: my %info = &Apache::lonnet::tmpget($env{'form.btoken'});
174: $balcookie = $info{'balcookie'};
175: if ($balcookie) {
176: if ($info{'linkprot'}) {
177: $linkprot = $info{'linkprot'};
178: } elsif ($info{'linkkey'}) {
179: $linkkey = $info{'linkkey'};
180: }
181: }
182: &Apache::lonnet::tmpdel($env{'form.btoken'});
183: delete($env{'form.btoken'});
184: }
185:
186: #
187: # If browser sent an old cookie for which the session file had been removed
188: # check if configuration for user's domain has a portal URL set. If so
189: # switch user's log-in to the portal.
190: #
191:
192: if (($handle eq '') && ($userdom ne '')) {
193: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
194: if ($domdefaults{'portal_def'} =~ /^https?\:/) {
195: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
196: {'redirect' => [0,$domdefaults{'portal_def'}],});
197: my $end_page = &Apache::loncommon::end_page();
198: $r->print($start_page.$end_page);
199: return OK;
200: }
201: }
202:
203: # -------------------------------- Prevent users from attempting to login twice
204: if ($handle ne '') {
205: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
206: my $start_page =
207: &Apache::loncommon::start_page('Already logged in');
208: my $end_page =
209: &Apache::loncommon::end_page();
210: my $dest = '/adm/roles';
211: if ($env{'form.firsturl'} ne '') {
212: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
213: $dest = &uri_escape_utf8($env{'form.firsturl'});
214: } else {
215: $dest = &uri_escape($env{'form.firsturl'});
216: }
217: $dest = &HTML::Entities::encode($dest,"'");
218: }
219: if (($env{'form.ltoken'}) || ($linkprot)) {
220: unless ($linkprot) {
221: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
222: $linkprot = $info{'linkprot'};
223: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
224: delete($env{'form.ltoken'});
225: }
226: if ($linkprot) {
227: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2);
228: if ($env{'user.linkprotector'}) {
229: my @protectors = split(/,/,$env{'user.linkprotector'});
230: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
231: push(@protectors,$linkprotector);
232: @protectors = sort { $a <=> $b } @protectors;
233: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
234: }
235: } else {
236: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
237: }
238: if ($env{'user.linkproturi'}) {
239: my @proturis = split(/,/,$env{'user.linkproturi'});
240: unless (grep(/^\Q$deeplink\E$/,@proturis)) {
241: push(@proturis,$deeplink);
242: @proturis = sort @proturis;
243: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
244: }
245: } else {
246: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
247: }
248: }
249: } elsif (($env{'form.linkkey'}) || ($linkkey)) {
250: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
251: if ($linkkey eq '') {
252: $linkkey = $env{'form.linkkey'};
253: }
254: if ($env{'user.deeplinkkey'}) {
255: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
256: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
257: push(@linkkeys,$linkkey);
258: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
259: }
260: } else {
261: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
262: }
263: my $deeplink = $env{'form.firsturl'};
264: if ($env{'user.keyedlinkuri'}) {
265: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
266: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
267: push(@keyeduris,$deeplink);
268: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
269: }
270: } else {
271: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
272: }
273: }
274: }
275: $r->print(
276: $start_page
277: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
278: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
279: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
280: .$end_page
281: );
282: return OK;
283: }
284:
285: # ---------------------------------------------------- No valid token, continue
286:
287: # ---------------------------- Not possible to really login to domain "public"
288: if ($env{'form.domain'} eq 'public') {
289: $env{'form.domain'}='';
290: $env{'form.username'}='';
291: }
292:
293: # ------ Is this page requested because /adm/migrateuser detected an IP change?
294: my %sessiondata;
295: if ($env{'form.iptoken'}) {
296: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
297: unless ($sessiondata{'sessionserver'}) {
298: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
299: delete($env{'form.iptoken'});
300: }
301: }
302: # ----------------------------------------------------------- Process Interface
303: $env{'form.interface'}=~s/\W//g;
304:
305: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
306: &Apache::loncommon::decode_user_agent();
307:
308: my $iconpath=
309: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
310:
311: my $domain = &Apache::lonnet::default_login_domain();
312: my $defdom = $domain;
313: if ($lonhost ne '') {
314: unless ($sessiondata{'sessionserver'}) {
315: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot);
316: if ($redirect) {
317: $r->print($redirect);
318: return OK;
319: }
320: }
321: }
322:
323: if (($sessiondata{'domain'}) &&
324: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) {
325: $domain=$sessiondata{'domain'};
326: } elsif (($env{'form.domain'}) &&
327: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
328: $domain=$env{'form.domain'};
329: }
330:
331: my $role = $r->dir_config('lonRole');
332: my $loadlim = $r->dir_config('lonLoadLim');
333: my $uloadlim= $r->dir_config('lonUserLoadLim');
334: my $servadm = $r->dir_config('lonAdmEMail');
335: my $tabdir = $r->dir_config('lonTabDir');
336: my $include = $r->dir_config('lonIncludes');
337: my $expire = $r->dir_config('lonExpire');
338: my $version = $r->dir_config('lonVersion');
339: my $host_name = &Apache::lonnet::hostname($lonhost);
340:
341: # --------------------------------------------- Default values for login fields
342:
343: my ($authusername,$authdomain);
344: if ($sessiondata{'username'}) {
345: $authusername=$sessiondata{'username'};
346: } else {
347: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
348: $authusername=($env{'form.username'}?$env{'form.username'}:'');
349: }
350: if ($sessiondata{'domain'}) {
351: $authdomain=$sessiondata{'domain'};
352: } else {
353: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
354: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
355: }
356:
357: # ---------------------------------------------------------- Determine own load
358: my $loadavg;
359: {
360: my $loadfile=Apache::File->new('/proc/loadavg');
361: $loadavg=<$loadfile>;
362: }
363: $loadavg =~ s/\s.*//g;
364:
365: my ($loadpercent,$userloadpercent);
366: if ($loadlim) {
367: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
368: }
369: if ($uloadlim) {
370: $userloadpercent=&Apache::lonnet::userload();
371: }
372:
373: my $firsturl=
374: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
375:
376: # ----------------------------------------------------------- Get announcements
377: my $announcements=&Apache::lonnet::getannounce();
378: # -------------------------------------------------------- Set login parameters
379:
380: my @hexstr=('0','1','2','3','4','5','6','7',
381: '8','9','a','b','c','d','e','f');
382: my $lkey='';
383: for (0..7) {
384: $lkey.=$hexstr[rand(15)];
385: }
386:
387: my $ukey='';
388: for (0..7) {
389: $ukey.=$hexstr[rand(15)];
390: }
391:
392: my $lextkey=hex($lkey);
393: if ($lextkey>2147483647) { $lextkey-=4294967296; }
394:
395: my $uextkey=hex($ukey);
396: if ($uextkey>2147483647) { $uextkey-=4294967296; }
397:
398: # -------------------------------------------------------- Store away log token
399: my $tokenextras;
400: if ($env{'form.role'}) {
401: $tokenextras = '&role='.&escape($env{'form.role'});
402: }
403: if ($env{'form.symb'}) {
404: if (!$tokenextras) {
405: $tokenextras = '&';
406: }
407: $tokenextras .= '&symb='.&escape($env{'form.symb'});
408: }
409: if ($env{'form.iptoken'}) {
410: if (!$tokenextras) {
411: $tokenextras = '&&';
412: }
413: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
414: }
415: if ($env{'form.ltoken'}) {
416: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
417: &Apache::lonnet::tmpdel($env{'form.ltoken'});
418: delete($env{'form.ltoken'});
419: if ($info{'linkprot'}) {
420: if (!$tokenextras) {
421: $tokenextras = '&&&';
422: }
423: $tokenextras .= '&linkprot='.&escape($info{'linkprot'});
424: }
425: } elsif ($env{'form.linkkey'}) {
426: if (!$tokenextras) {
427: $tokenextras = '&&&';
428: }
429: $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'});
430: }
431: my $logtoken=Apache::lonnet::reply(
432: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
433: $lonhost);
434:
435: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
436: # we are in serious trouble
437:
438: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
439: if ($logtoken eq 'no_such_host') {
440: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
441: }
442: my $spares='';
443: my (@sparehosts,%spareservers);
444: my $sparesref = &Apache::lonnet::this_host_spares($defdom);
445: if (ref($sparesref) eq 'HASH') {
446: foreach my $key (keys(%{$sparesref})) {
447: if (ref($sparesref->{$key}) eq 'ARRAY') {
448: my @sorted = sort { &Apache::lonnet::hostname($a) cmp
449: &Apache::lonnet::hostname($b);
450: } @{$sparesref->{$key}};
451: if (@sorted) {
452: if ($key eq 'primary') {
453: unshift(@sparehosts,@sorted);
454: } elsif ($key eq 'default') {
455: push(@sparehosts,@sorted);
456: }
457: }
458: }
459: }
460: }
461: foreach my $hostid (@sparehosts) {
462: next if ($hostid eq $lonhost);
463: my $hostname = &Apache::lonnet::hostname($hostid);
464: next if (($hostname eq '') || ($spareservers{$hostname}));
465: $spareservers{$hostname} = 1;
466: my $protocol = $Apache::lonnet::protocol{$hostid};
467: $protocol = 'http' if ($protocol ne 'https');
468: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'.
469: $hostname.
470: '/adm/login?domain='.$authdomain.'">'.
471: $hostname.'</a>'.
472: ' '.&mt('(preferred)').'</span>'.$/;
473: }
474: if ($spares) {
475: $spares.= '<br />';
476: }
477: my %all_hostnames = &Apache::lonnet::all_hostnames();
478: foreach my $hostid (sort
479: {
480: &Apache::lonnet::hostname($a) cmp
481: &Apache::lonnet::hostname($b);
482: }
483: keys(%all_hostnames)) {
484: next if ($hostid eq $lonhost);
485: my $hostname = &Apache::lonnet::hostname($hostid);
486: next if (($hostname eq '') || ($spareservers{$hostname}));
487: $spareservers{$hostname} = 1;
488: my $protocol = $Apache::lonnet::protocol{$hostid};
489: $protocol = 'http' if ($protocol ne 'https');
490: $spares.='<br /><a href="'.$protocol.'://'.
491: $hostname.
492: '/adm/login?domain='.$authdomain.'">'.
493: $hostname.'</a>';
494: }
495: $r->print(
496: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
497: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
498: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>'
499: .&mt('The LearningOnline Network with CAPA')
500: .'</title></head>'
501: .'<body bgcolor="#FFFFFF">'
502: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
503: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />'
504: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
505: if ($spares) {
506: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
507: .'</p>'
508: .$spares);
509: }
510: $r->print('</body>'
511: .'</html>'
512: );
513: return OK;
514: }
515:
516: # ----------------------------------------------- Apparently we are in business
517: $servadm=~s/\,/\<br \/\>/g;
518:
519: # ----------------------------------------------------------- Front page design
520: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
521: my $font=&Apache::loncommon::designparm('login.font',$domain);
522: my $link=&Apache::loncommon::designparm('login.link',$domain);
523: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
524: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
525: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
526: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
527: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
528: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
529: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
530: my $img=&Apache::loncommon::designparm('login.img',$domain);
531: my $domainlogo=&Apache::loncommon::domainlogo($domain);
532: my $showbanner = 1;
533: my $showmainlogo = 1;
534: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
535: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
536: }
537: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
538: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
539: }
540: my $showadminmail;
541: my @possdoms = &Apache::lonnet::current_machine_domains();
542: if (grep(/^\Q$domain\E$/,@possdoms)) {
543: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
544: }
545: my $showcoursecat =
546: &Apache::loncommon::designparm('login.coursecatalog',$domain);
547: my $shownewuserlink =
548: &Apache::loncommon::designparm('login.newuser',$domain);
549: my $showhelpdesk =
550: &Apache::loncommon::designparm('login.helpdesk',$domain);
551: my $now=time;
552: my $js = (<<ENDSCRIPT);
553:
554: <script type="text/javascript" language="JavaScript">
555: // <![CDATA[
556: function send()
557: {
558: this.document.server.elements.uname.value
559: =this.document.client.elements.uname.value;
560:
561: this.document.server.elements.udom.value
562: =this.document.client.elements.udom.value;
563:
564: uextkey=this.document.client.elements.uextkey.value;
565: lextkey=this.document.client.elements.lextkey.value;
566: initkeys();
567:
568: if(this.document.server.action.substr(0,5) === 'http:'){
569: this.document.server.elements.upass0.value
570: =getCrypted(this.document.client.elements.upass$now.value);
571: } else {
572: this.document.server.elements.upass0.value
573: =this.document.client.elements.upass$now.value;
574: }
575:
576: this.document.client.elements.uname.value='';
577: this.document.client.elements.upass$now.value='';
578:
579: this.document.server.submit();
580: return false;
581: }
582:
583: function enableInput() {
584: this.document.client.elements.upass$now.removeAttribute("readOnly");
585: this.document.client.elements.uname.removeAttribute("readOnly");
586: this.document.client.elements.udom.removeAttribute("readOnly");
587: return;
588: }
589:
590: // ]]>
591: </script>
592:
593: ENDSCRIPT
594:
595: my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing,
596: $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip);
597: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
598: @hosts = &Apache::lonnet::current_machine_ids();
599: $lonhost_in_use = $lonhost;
600: if (@hosts > 1) {
601: foreach my $hostid (@hosts) {
602: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
603: $lonhost_in_use = $hostid;
604: last;
605: }
606: }
607: }
608: $saml_prefix = $defdom.'.login.saml_';
609: if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) {
610: $saml_landing = 1;
611: $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use};
612: $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use};
613: $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use};
614: $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use};
615: $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use};
616: $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use};
617: }
618: if ($saml_landing) {
619: if ($samlssotext eq '') {
620: $samlssotext = 'SSO Login';
621: }
622: if ($samlnonsso eq '') {
623: $samlnonsso = 'Non-SSO Login';
624: }
625: $js .= <<"ENDSAMLJS";
626:
627: <script type="text/javascript">
628: // <![CDATA[
629: function toggleLClogin() {
630: if (document.getElementById('LC_standard_login')) {
631: if (document.getElementById('LC_standard_login').style.display == 'none') {
632: document.getElementById('LC_standard_login').style.display = 'inline-block';
633: if (document.getElementById('LC_login_text')) {
634: document.getElementById('LC_login_text').innerHTML = '$samlnonsso';
635: }
636: if (document.getElementById('LC_SSO_login')) {
637: document.getElementById('LC_SSO_login').style.display = 'none';
638: }
639: } else {
640: document.getElementById('LC_standard_login').style.display = 'none';
641: if (document.getElementById('LC_login_text')) {
642: document.getElementById('LC_login_text').innerHTML = '$samlssotext';
643: }
644: if (document.getElementById('LC_SSO_login')) {
645: document.getElementById('LC_SSO_login').style.display = 'inline-block';
646: }
647: }
648: }
649: return;
650: }
651:
652: // ]]>
653: </script>
654:
655: ENDSAMLJS
656: }
657:
658: # --------------------------------------------------- Print login screen header
659:
660: my %add_entries = (
661: bgcolor => "$mainbg",
662: text => "$font",
663: link => "$link",
664: vlink => "$vlink",
665: alink => "$alink",
666: onload => 'javascript:enableInput();',);
667:
668: my ($headextra,$headextra_exempt);
669: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
670: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
671: if ($headextra) {
672: my $omitextra;
673: if ($headextra_exempt ne '') {
674: my @exempt = split(',',$headextra_exempt);
675: my $ip = &Apache::lonnet::get_requestor_ip();
676: if (grep(/^\Q$ip\E$/,@exempt)) {
677: $omitextra = 1;
678: }
679: }
680: unless ($omitextra) {
681: my $confname = $defdom.'-domainconfig';
682: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
683: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
684: unless ($extra eq '-1') {
685: $js .= "\n".$extra."\n";
686: }
687: }
688: }
689: }
690:
691: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
692: { 'redirect' => [$expire,'/adm/roles'],
693: 'add_entries' => \%add_entries,
694: 'only_body' => 1,}));
695:
696: # ----------------------------------------------------------------------- Texts
697:
698: my %lt=&Apache::lonlocal::texthash(
699: 'un' => 'Username',
700: 'pw' => 'Password',
701: 'dom' => 'Domain',
702: 'perc' => 'percent',
703: 'load' => 'Server Load',
704: 'userload' => 'User Load',
705: 'catalog' => 'Course/Community Catalog',
706: 'log' => 'Log in',
707: 'help' => 'Log-in Help',
708: 'serv' => 'Server',
709: 'servadm' => 'Server Administration',
710: 'helpdesk' => 'Contact Helpdesk',
711: 'forgotpw' => 'Forgot password?',
712: 'newuser' => 'New User?',
713: 'change' => 'Change?',
714: );
715: # -------------------------------------------------- Change password field name
716:
717: my $forgotpw = &forgotpwdisplay(%lt);
718: $forgotpw .= '<br />' if $forgotpw;
719: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
720: if ($loginhelp) {
721: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
722: }
723:
724: # ---------------------------------------------------- Serve out DES JavaScript
725: {
726: my $jsh=Apache::File->new($include."/londes.js");
727: $r->print(<$jsh>);
728: }
729: # ---------------------------------------------------------- Serve rest of page
730:
731: $r->print(
732: '<div class="LC_Box"'
733: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
734: );
735:
736: $r->print(<<ENDSERVERFORM);
737: <form name="server" action="/adm/authenticate" method="post" target="_top">
738: <input type="hidden" name="logtoken" value="$logtoken" />
739: <input type="hidden" name="serverid" value="$lonhost" />
740: <input type="hidden" name="uname" value="" />
741: <input type="hidden" name="upass0" value="" />
742: <input type="hidden" name="udom" value="" />
743: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
744: <input type="hidden" name="localres" value="$env{'form.localres'}" />
745: </form>
746: ENDSERVERFORM
747: my $coursecatalog;
748: if (($showcoursecat eq '') || ($showcoursecat)) {
749: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
750: }
751: my $newuserlink;
752: if ($shownewuserlink) {
753: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
754: }
755: my $logintitle =
756: '<h2 class="LC_hcell"'
757: .' style="background:'.$loginbox_header_bgcol.';'
758: .' color:'.$loginbox_header_textcol.'">'
759: .$lt{'log'}
760: .'</h2>';
761:
762: my $noscript_warning='<noscript><span class="LC_warning"><b>'
763: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
764: .'</b></span></noscript>';
765: my $helpdeskscript;
766: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
767: $authdomain,\$helpdeskscript,
768: $showhelpdesk,\@possdoms);
769:
770: my $mobileargs;
771: if ($clientmobile) {
772: $mobileargs = 'autocapitalize="off" autocorrect="off"';
773: }
774: my $loginform=(<<LFORM);
775: <form name="client" action="" onsubmit="return(send())" id="lclogin">
776: <input type="hidden" name="lextkey" value="$lextkey" />
777: <input type="hidden" name="uextkey" value="$uextkey" />
778: <b><label for="uname">$lt{'un'}</label>:</b><br />
779: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
780: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
781: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
782: <b><label for="udom">$lt{'dom'}</label>:</b><br />
783: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
784: <input type="submit" value="$lt{'log'}" />
785: </form>
786: LFORM
787:
788: if ($showbanner) {
789: $r->print(<<HEADER);
790: <!-- The LON-CAPA Header -->
791: <div style="background:$pgbg;margin:0;width:100%;">
792: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
793: </div>
794: HEADER
795: }
796:
797: my $stdauthformstyle = 'inline-block';
798: my $ssoauthstyle = 'none';
799: my $logintype;
800: $r->print('<div style="float:left;margin-top:0;">');
801: if ($saml_landing) {
802: $ssoauthstyle = 'inline-block';
803: $stdauthformstyle = 'none';
804: $logintype = $samlssotext;
805: my $ssologin = '/adm/sso';
806: if ($samlssourl ne '') {
807: $ssologin = $samlssourl;
808: }
809: if ($env{'form.firsturl'} ne '') {
810: my $querystring;
811: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
812: $querystring = &uri_escape_utf8($env{'form.firsturl'});
813: } else {
814: $querystring = &uri_escape($env{'form.firsturl'});
815: }
816: $querystring = &HTML::Entities::encode($querystring,"'");
817: $ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring;
818: }
819: my $ssohref;
820: if ($samlssoimg ne '') {
821: $ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'"><img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" /></a>';
822: } else {
823: $ssohref = '<a href="'.$ssologin.'">'.$samlssotext.'</a>';
824: }
825: if (($env{'form.saml'} eq 'no') ||
826: (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) {
827: $ssoauthstyle = 'none';
828: $stdauthformstyle = 'inline-block';
829: $logintype = $samlnonsso;
830: }
831: $r->print(<<ENDSAML);
832: <p>
833: Log-in type:
834: <span style="font-weight:bold" id="LC_login_text">$logintype</span><br />
835: <span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span>
836: </p>
837: <div style="display:$ssoauthstyle" id="LC_SSO_login">
838: <div class="LC_Box" style="padding-top: 10px;">
839: $ssohref
840: $noscript_warning
841: </div>
842: <div class="LC_Box" style="padding-top: 10px;">
843: $loginhelp
844: $contactblock
845: $coursecatalog
846: </div>
847: </div>
848: ENDSAML
849: }
850:
851: $r->print(<<ENDLOGIN);
852: <div style="display:$stdauthformstyle;" id="LC_standard_login">
853: <div class="LC_Box" style="background:$loginbox_bg;">
854: $logintitle
855: $loginform
856: $noscript_warning
857: </div>
858:
859: <div class="LC_Box" style="padding-top: 10px;">
860: $loginhelp
861: $forgotpw
862: $contactblock
863: $newuserlink
864: $coursecatalog
865: </div>
866: </div>
867:
868: ENDLOGIN
869: $r->print('</div><div>'."\n");
870: if ($showmainlogo) {
871: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
872: }
873: $r->print(<<ENDTOP);
874: $announcements
875: </div>
876: <hr style="clear:both;" />
877: ENDTOP
878: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
879: $domainrow = <<"END";
880: <tr>
881: <td align="left" valign="top">
882: <small><b>$lt{'dom'}: </b></small>
883: </td>
884: <td align="left" valign="top">
885: <small><tt> $domain</tt></small>
886: </td>
887: </tr>
888: END
889: $serverrow = <<"END";
890: <tr>
891: <td align="left" valign="top">
892: <small><b>$lt{'serv'}: </b></small>
893: </td>
894: <td align="left" valign="top">
895: <small><tt> $lonhost ($role)</tt></small>
896: </td>
897: </tr>
898: END
899: if ($loadlim) {
900: $loadrow = <<"END";
901: <tr>
902: <td align="left" valign="top">
903: <small><b>$lt{'load'}: </b></small>
904: </td>
905: <td align="left" valign="top">
906: <small><tt> $loadpercent $lt{'perc'}</tt></small>
907: </td>
908: </tr>
909: END
910: }
911: if ($uloadlim) {
912: $userloadrow = <<"END";
913: <tr>
914: <td align="left" valign="top">
915: <small><b>$lt{'userload'}: </b></small>
916: </td>
917: <td align="left" valign="top">
918: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
919: </td>
920: </tr>
921: END
922: }
923: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
924: $versionrow = <<"END";
925: <tr>
926: <td colspan="2" align="left">
927: <small>$version</small>
928: </td>
929: </tr>
930: END
931: }
932:
933: $r->print(<<ENDDOCUMENT);
934: <div style="float: left;">
935: <table border="0" cellspacing="0" cellpadding="0">
936: $domainrow
937: $serverrow
938: $loadrow
939: $userloadrow
940: $versionrow
941: </table>
942: </div>
943: <div style="float: right;">
944: $domainlogo
945: </div>
946: <br style="clear:both;" />
947: </div>
948:
949: <script type="text/javascript">
950: // <![CDATA[
951: // the if prevents the script error if the browser can not handle this
952: if ( document.client.uname ) { document.client.uname.focus(); }
953: // ]]>
954: </script>
955: $helpdeskscript
956:
957: ENDDOCUMENT
958: my %endargs = ( 'noredirectlink' => 1, );
959: $r->print(&Apache::loncommon::end_page(\%endargs));
960: return OK;
961: }
962:
963: sub check_loginvia {
964: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_;
965: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
966: return;
967: }
968: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
969: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
970: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
971: my $output;
972: if ($loginvia ne '') {
973: my $noredirect;
974: my $ip = &Apache::lonnet::get_requestor_ip();
975: if ($ip eq '127.0.0.1') {
976: $noredirect = 1;
977: } else {
978: if ($loginvia_exempt ne '') {
979: my @exempt = split(',',$loginvia_exempt);
980: if (grep(/^\Q$ip\E$/,@exempt)) {
981: $noredirect = 1;
982: }
983: }
984: }
985: unless ($noredirect) {
986: my ($newhost,$path);
987: if ($loginvia =~ /:/) {
988: ($newhost,$path) = split(':',$loginvia);
989: } else {
990: $newhost = $loginvia;
991: }
992: if ($newhost ne $lonhost) {
993: if (&Apache::lonnet::hostname($newhost) ne '') {
994: if ($balcookie) {
995: my ($balancer,$cookie) = split(/:/,$balcookie);
996: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
997: my ($udom,$uname,$cookieid) = ($1,$2,$3);
998: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
999: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
1000: while (my $filename=readdir($dh)) {
1001: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
1002: my $handle = $1;
1003: my %hash =
1004: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
1005: ['request.balancercookie',
1006: 'user.linkedenv']);
1007: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
1008: if (unlink("$lonidsdir/$filename")) {
1009: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
1010: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
1011: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
1012: unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
1013: }
1014: }
1015: }
1016: last;
1017: }
1018: }
1019: closedir($dh);
1020: }
1021: }
1022: }
1023: }
1024: $output = &redirect_page($newhost,$path,$linkprot);
1025: }
1026: }
1027: }
1028: }
1029: return $output;
1030: }
1031:
1032: sub redirect_page {
1033: my ($desthost,$path,$linkprot) = @_;
1034: my $hostname = &Apache::lonnet::hostname($desthost);
1035: my $protocol = $Apache::lonnet::protocol{$desthost};
1036: $protocol = 'http' if ($protocol ne 'https');
1037: unless ($path =~ m{^/}) {
1038: $path = '/'.$path;
1039: }
1040: my $url = $protocol.'://'.$hostname.$path;
1041: if ($env{'form.firsturl'} ne '') {
1042: my $querystring;
1043: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
1044: $querystring = &uri_escape_utf8($env{'form.firsturl'});
1045: } else {
1046: $querystring = &uri_escape($env{'form.firsturl'});
1047: }
1048: $querystring = &HTML::Entities::encode($querystring,"'");
1049: $url .='?firsturl='.$querystring
1050: }
1051: if ($linkprot) {
1052: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost);
1053: if ($ltoken) {
1054: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken;
1055: }
1056: }
1057: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
1058: {'redirect' => [0,$url],});
1059: my $end_page = &Apache::loncommon::end_page();
1060: return $start_page.$end_page;
1061: }
1062:
1063: sub contactdisplay {
1064: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
1065: $possdoms) = @_;
1066: my $contactblock;
1067: my $origmail;
1068: if (ref($possdoms) eq 'ARRAY') {
1069: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
1070: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
1071: }
1072: }
1073: my $requestmail =
1074: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
1075: $authdomain,$origmail);
1076: unless ($showhelpdesk eq '0') {
1077: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
1078: $showhelpdesk = 1;
1079: } else {
1080: $showhelpdesk = 0;
1081: }
1082: }
1083: if ($servadm && $showadminmail) {
1084: $contactblock .= $$lt{'servadm'}.':<br />'.
1085: '<tt>'.$servadm.'</tt><br />';
1086: }
1087: if ($showhelpdesk) {
1088: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
1089: my $thisurl = &escape('/adm/login');
1090: $$helpdeskscript = <<"ENDSCRIPT";
1091: <script type="text/javascript">
1092: // <![CDATA[
1093: function helpdesk() {
1094: var possdom = document.client.udom.value;
1095: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
1096: if (codedom == '') {
1097: codedom = "$authdomain";
1098: }
1099: var querystr = "origurl=$thisurl&codedom="+codedom;
1100: document.location.href = "/adm/helpdesk?"+querystr;
1101: return;
1102: }
1103: // ]]>
1104: </script>
1105: ENDSCRIPT
1106: }
1107: return $contactblock;
1108: }
1109:
1110: sub forgotpwdisplay {
1111: my (%lt) = @_;
1112: my $prompt_for_resetpw = 1;
1113: if ($prompt_for_resetpw) {
1114: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
1115: }
1116: return;
1117: }
1118:
1119: sub coursecatalog_link {
1120: my ($linkname) = @_;
1121: return <<"END";
1122: <a href="/adm/coursecatalog">$linkname</a>
1123: END
1124: }
1125:
1126: sub newuser_link {
1127: my ($linkname) = @_;
1128: return '<a href="/adm/createaccount">'.$linkname.'</a>';
1129: }
1130:
1131: 1;
1132: __END__
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