1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.185 2021/09/27 02:49:36 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: $ENV{'REDIRECT_QUERY_STRING'}),
49: ['interface','username','domain','firsturl','localpath','localres',
50: 'token','role','symb','iptoken','btoken','ltoken','linkkey','saml']);
51: if (!defined($env{'form.firsturl'})) {
52: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
53: }
54: if (!defined($env{'form.firsturl'})) {
55: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) {
56: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'};
57: }
58: }
59: if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) &&
60: (!$env{'form.ltoken'}) && (!$env{'form.linkkey'})) {
61: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
62: }
63:
64: # -- check if they are a migrating user
65: if (defined($env{'form.token'})) {
66: return &Apache::migrateuser::handler($r);
67: }
68:
69: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
70: my ($handle,$lonidsdir,$expirepub,$userdom);
71: $lonidsdir=$r->dir_config('lonIDsDir');
72: unless ($r->header_only) {
73: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
74: if ($handle ne '') {
75: if ($handle=~/^publicuser\_/) {
76: unlink($r->dir_config('lonIDsDir')."/$handle.id");
77: undef($handle);
78: undef($userdom);
79: $expirepub = 1;
80: }
81: }
82: }
83:
84: &Apache::loncommon::no_cache($r);
85: &Apache::lonlocal::get_language_handle($r);
86: &Apache::loncommon::content_type($r,'text/html');
87: if ($expirepub) {
88: my $c = new CGI::Cookie(-name => 'lonPubID',
89: -value => '',
90: -expires => '-10y',);
91: $r->header_out('Set-cookie' => $c);
92: } elsif (($handle eq '') && ($userdom ne '')) {
93: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
94: foreach my $name (keys(%cookies)) {
95: next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
96: my $c = new CGI::Cookie(-name => $name,
97: -value => '',
98: -expires => '-10y',);
99: $r->headers_out->add('Set-cookie' => $c);
100: }
101: }
102: $r->send_http_header;
103: return OK if $r->header_only;
104:
105:
106: # Are we re-routing?
107: my $londocroot = $r->dir_config('lonDocRoot');
108: if (-e "$londocroot/lon-status/reroute.txt") {
109: &Apache::lonauth::reroute($r);
110: return OK;
111: }
112:
113: my $lonhost = $r->dir_config('lonHostID');
114: $env{'form.firsturl'} =~ s/(`)/'/g;
115:
116: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
117:
118: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
119: if ($found_server) {
120: my $hostname = &Apache::lonnet::hostname($found_server);
121: if ($hostname ne '') {
122: my $protocol = $Apache::lonnet::protocol{$found_server};
123: $protocol = 'http' if ($protocol ne 'https');
124: my $dest = '/adm/roles';
125: if ($env{'form.firsturl'} ne '') {
126: $dest = $env{'form.firsturl'};
127: }
128: my %info = (
129: balcookie => $lonhost.':'.$balancer_cookie,
130: );
131: if ($env{'form.ltoken'}) {
132: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
133: if ($link_info{'linkprot'}) {
134: $info{'linkprot'} = $link_info{'linkprot'};
135: }
136: &Apache::lonnet::tmpdel($env{'form.ltoken'});
137: delete($env{'form.ltoken'});
138: } elsif ($env{'form.linkkey'}) {
139: $info{'linkkey'} = $env{'form.linkkey'};
140: delete($env{'form.linkkey'});
141: }
142: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server);
143: if ($balancer_token) {
144: $dest .= (($dest=~/\?/)?'&;':'?') . 'btoken='.$balancer_token;
145: }
146: unless ($found_server eq $lonhost) {
147: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server);
148: $hostname = $alias if ($alias ne '');
149: }
150: my $url = $protocol.'://'.$hostname.$dest;
151: my $start_page =
152: &Apache::loncommon::start_page('Switching Server ...',undef,
153: {'redirect' => [0,$url],});
154: my $end_page = &Apache::loncommon::end_page();
155: $r->print($start_page.$end_page);
156: return OK;
157: }
158: }
159:
160: #
161: # Check if a LON-CAPA load balancer sent user here because user's browser sent
162: # it a balancer cookie for an active session on this server.
163: #
164:
165: my ($balcookie,$linkprot,$linkkey);
166: if ($env{'form.btoken'}) {
167: my %info = &Apache::lonnet::tmpget($env{'form.btoken'});
168: $balcookie = $info{'balcookie'};
169: if ($balcookie) {
170: if ($info{'linkprot'}) {
171: $linkprot = $info{'linkprot'};
172: } elsif ($info{'linkkey'}) {
173: $linkkey = $info{'linkkey'};
174: }
175: }
176: &Apache::lonnet::tmpdel($env{'form.btoken'});
177: delete($env{'form.btoken'});
178: }
179:
180: #
181: # If browser sent an old cookie for which the session file had been removed
182: # check if configuration for user's domain has a portal URL set. If so
183: # switch user's log-in to the portal.
184: #
185:
186: if (($handle eq '') && ($userdom ne '')) {
187: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
188: if ($domdefaults{'portal_def'} =~ /^https?\:/) {
189: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
190: {'redirect' => [0,$domdefaults{'portal_def'}],});
191: my $end_page = &Apache::loncommon::end_page();
192: $r->print($start_page.$end_page);
193: return OK;
194: }
195: }
196:
197: # -------------------------------- Prevent users from attempting to login twice
198: if ($handle ne '') {
199: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
200: my $start_page =
201: &Apache::loncommon::start_page('Already logged in');
202: my $end_page =
203: &Apache::loncommon::end_page();
204: my $dest = '/adm/roles';
205: if ($env{'form.firsturl'} ne '') {
206: $dest = $env{'form.firsturl'};
207: }
208: if (($env{'form.ltoken'}) || ($linkprot)) {
209: unless ($linkprot) {
210: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
211: $linkprot = $info{'linkprot'};
212: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
213: delete($env{'form.ltoken'});
214: }
215: if ($linkprot) {
216: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2);
217: if ($env{'user.linkprotector'}) {
218: my @protectors = split(/,/,$env{'user.linkprotector'});
219: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
220: push(@protectors,$linkprotector);
221: @protectors = sort { $a <=> $b } @protectors;
222: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
223: }
224: } else {
225: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
226: }
227: if ($env{'user.linkproturi'}) {
228: my @proturis = split(/,/,$env{'user.linkproturi'});
229: unless (grep(/^\Q$deeplink\E$/,@proturis)) {
230: push(@proturis,$deeplink);
231: @proturis = sort @proturis;
232: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
233: }
234: } else {
235: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
236: }
237: }
238: } elsif (($env{'form.linkkey'}) || ($linkkey)) {
239: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
240: if ($linkkey eq '') {
241: $linkkey = $env{'form.linkkey'};
242: }
243: if ($env{'user.deeplinkkey'}) {
244: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
245: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
246: push(@linkkeys,$linkkey);
247: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
248: }
249: } else {
250: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
251: }
252: my $deeplink = $env{'form.firsturl'};
253: if ($env{'user.keyedlinkuri'}) {
254: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
255: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
256: push(@keyeduris,$deeplink);
257: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
258: }
259: } else {
260: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
261: }
262: }
263: }
264: $r->print(
265: $start_page
266: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
267: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
268: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
269: .$end_page
270: );
271: return OK;
272: }
273:
274: # ---------------------------------------------------- No valid token, continue
275:
276: # ---------------------------- Not possible to really login to domain "public"
277: if ($env{'form.domain'} eq 'public') {
278: $env{'form.domain'}='';
279: $env{'form.username'}='';
280: }
281:
282: # ------ Is this page requested because /adm/migrateuser detected an IP change?
283: my %sessiondata;
284: if ($env{'form.iptoken'}) {
285: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
286: unless ($sessiondata{'sessionserver'}) {
287: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
288: delete($env{'form.iptoken'});
289: }
290: }
291: # ----------------------------------------------------------- Process Interface
292: $env{'form.interface'}=~s/\W//g;
293:
294: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
295: &Apache::loncommon::decode_user_agent();
296:
297: my $iconpath=
298: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
299:
300: my $domain = &Apache::lonnet::default_login_domain();
301: my $defdom = $domain;
302: if ($lonhost ne '') {
303: unless ($sessiondata{'sessionserver'}) {
304: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot);
305: if ($redirect) {
306: $r->print($redirect);
307: return OK;
308: }
309: }
310: }
311:
312: if (($sessiondata{'domain'}) &&
313: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) {
314: $domain=$sessiondata{'domain'};
315: } elsif (($env{'form.domain'}) &&
316: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
317: $domain=$env{'form.domain'};
318: }
319:
320: my $role = $r->dir_config('lonRole');
321: my $loadlim = $r->dir_config('lonLoadLim');
322: my $uloadlim= $r->dir_config('lonUserLoadLim');
323: my $servadm = $r->dir_config('lonAdmEMail');
324: my $tabdir = $r->dir_config('lonTabDir');
325: my $include = $r->dir_config('lonIncludes');
326: my $expire = $r->dir_config('lonExpire');
327: my $version = $r->dir_config('lonVersion');
328: my $host_name = &Apache::lonnet::hostname($lonhost);
329:
330: # --------------------------------------------- Default values for login fields
331:
332: my ($authusername,$authdomain);
333: if ($sessiondata{'username'}) {
334: $authusername=$sessiondata{'username'};
335: } else {
336: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
337: $authusername=($env{'form.username'}?$env{'form.username'}:'');
338: }
339: if ($sessiondata{'domain'}) {
340: $authdomain=$sessiondata{'domain'};
341: } else {
342: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
343: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
344: }
345:
346: # ---------------------------------------------------------- Determine own load
347: my $loadavg;
348: {
349: my $loadfile=Apache::File->new('/proc/loadavg');
350: $loadavg=<$loadfile>;
351: }
352: $loadavg =~ s/\s.*//g;
353:
354: my ($loadpercent,$userloadpercent);
355: if ($loadlim) {
356: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
357: }
358: if ($uloadlim) {
359: $userloadpercent=&Apache::lonnet::userload();
360: }
361:
362: my $firsturl=
363: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
364:
365: # ----------------------------------------------------------- Get announcements
366: my $announcements=&Apache::lonnet::getannounce();
367: # -------------------------------------------------------- Set login parameters
368:
369: my @hexstr=('0','1','2','3','4','5','6','7',
370: '8','9','a','b','c','d','e','f');
371: my $lkey='';
372: for (0..7) {
373: $lkey.=$hexstr[rand(15)];
374: }
375:
376: my $ukey='';
377: for (0..7) {
378: $ukey.=$hexstr[rand(15)];
379: }
380:
381: my $lextkey=hex($lkey);
382: if ($lextkey>2147483647) { $lextkey-=4294967296; }
383:
384: my $uextkey=hex($ukey);
385: if ($uextkey>2147483647) { $uextkey-=4294967296; }
386:
387: # -------------------------------------------------------- Store away log token
388: my $tokenextras;
389: if ($env{'form.role'}) {
390: $tokenextras = '&role='.&escape($env{'form.role'});
391: }
392: if ($env{'form.symb'}) {
393: if (!$tokenextras) {
394: $tokenextras = '&';
395: }
396: $tokenextras .= '&symb='.&escape($env{'form.symb'});
397: }
398: if ($env{'form.iptoken'}) {
399: if (!$tokenextras) {
400: $tokenextras = '&&';
401: }
402: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
403: }
404: if ($env{'form.ltoken'}) {
405: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
406: &Apache::lonnet::tmpdel($env{'form.ltoken'});
407: delete($env{'form.ltoken'});
408: if ($info{'linkprot'}) {
409: if (!$tokenextras) {
410: $tokenextras = '&&&';
411: }
412: $tokenextras .= '&linkprot='.&escape($info{'linkprot'});
413: }
414: } elsif ($env{'form.linkkey'}) {
415: if (!$tokenextras) {
416: $tokenextras = '&&&';
417: }
418: $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'});
419: }
420: my $logtoken=Apache::lonnet::reply(
421: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
422: $lonhost);
423:
424: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
425: # we are in serious trouble
426:
427: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
428: if ($logtoken eq 'no_such_host') {
429: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
430: }
431: my $spares='';
432: my (@sparehosts,%spareservers);
433: my $sparesref = &Apache::lonnet::this_host_spares($defdom);
434: if (ref($sparesref) eq 'HASH') {
435: foreach my $key (keys(%{$sparesref})) {
436: if (ref($sparesref->{$key}) eq 'ARRAY') {
437: my @sorted = sort { &Apache::lonnet::hostname($a) cmp
438: &Apache::lonnet::hostname($b);
439: } @{$sparesref->{$key}};
440: if (@sorted) {
441: if ($key eq 'primary') {
442: unshift(@sparehosts,@sorted);
443: } elsif ($key eq 'default') {
444: push(@sparehosts,@sorted);
445: }
446: }
447: }
448: }
449: }
450: foreach my $hostid (@sparehosts) {
451: next if ($hostid eq $lonhost);
452: my $hostname = &Apache::lonnet::hostname($hostid);
453: next if (($hostname eq '') || ($spareservers{$hostname}));
454: $spareservers{$hostname} = 1;
455: my $protocol = $Apache::lonnet::protocol{$hostid};
456: $protocol = 'http' if ($protocol ne 'https');
457: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'.
458: $hostname.
459: '/adm/login?domain='.$authdomain.'">'.
460: $hostname.'</a>'.
461: ' '.&mt('(preferred)').'</span>'.$/;
462: }
463: if ($spares) {
464: $spares.= '<br />';
465: }
466: my %all_hostnames = &Apache::lonnet::all_hostnames();
467: foreach my $hostid (sort
468: {
469: &Apache::lonnet::hostname($a) cmp
470: &Apache::lonnet::hostname($b);
471: }
472: keys(%all_hostnames)) {
473: next if ($hostid eq $lonhost);
474: my $hostname = &Apache::lonnet::hostname($hostid);
475: next if (($hostname eq '') || ($spareservers{$hostname}));
476: $spareservers{$hostname} = 1;
477: my $protocol = $Apache::lonnet::protocol{$hostid};
478: $protocol = 'http' if ($protocol ne 'https');
479: $spares.='<br /><a href="'.$protocol.'://'.
480: $hostname.
481: '/adm/login?domain='.$authdomain.'">'.
482: $hostname.'</a>';
483: }
484: $r->print(
485: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
486: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
487: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>'
488: .&mt('The LearningOnline Network with CAPA')
489: .'</title></head>'
490: .'<body bgcolor="#FFFFFF">'
491: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
492: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />'
493: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
494: if ($spares) {
495: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
496: .'</p>'
497: .$spares);
498: }
499: $r->print('</body>'
500: .'</html>'
501: );
502: return OK;
503: }
504:
505: # ----------------------------------------------- Apparently we are in business
506: $servadm=~s/\,/\<br \/\>/g;
507:
508: # ----------------------------------------------------------- Front page design
509: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
510: my $font=&Apache::loncommon::designparm('login.font',$domain);
511: my $link=&Apache::loncommon::designparm('login.link',$domain);
512: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
513: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
514: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
515: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
516: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
517: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
518: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
519: my $img=&Apache::loncommon::designparm('login.img',$domain);
520: my $domainlogo=&Apache::loncommon::domainlogo($domain);
521: my $showbanner = 1;
522: my $showmainlogo = 1;
523: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
524: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
525: }
526: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
527: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
528: }
529: my $showadminmail;
530: my @possdoms = &Apache::lonnet::current_machine_domains();
531: if (grep(/^\Q$domain\E$/,@possdoms)) {
532: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
533: }
534: my $showcoursecat =
535: &Apache::loncommon::designparm('login.coursecatalog',$domain);
536: my $shownewuserlink =
537: &Apache::loncommon::designparm('login.newuser',$domain);
538: my $showhelpdesk =
539: &Apache::loncommon::designparm('login.helpdesk',$domain);
540: my $now=time;
541: my $js = (<<ENDSCRIPT);
542:
543: <script type="text/javascript" language="JavaScript">
544: // <![CDATA[
545: function send()
546: {
547: this.document.server.elements.uname.value
548: =this.document.client.elements.uname.value;
549:
550: this.document.server.elements.udom.value
551: =this.document.client.elements.udom.value;
552:
553: uextkey=this.document.client.elements.uextkey.value;
554: lextkey=this.document.client.elements.lextkey.value;
555: initkeys();
556:
557: if(this.document.server.action.substr(0,5) === 'http:'){
558: this.document.server.elements.upass0.value
559: =getCrypted(this.document.client.elements.upass$now.value);
560: } else {
561: this.document.server.elements.upass0.value
562: =this.document.client.elements.upass$now.value;
563: }
564:
565: this.document.client.elements.uname.value='';
566: this.document.client.elements.upass$now.value='';
567:
568: this.document.server.submit();
569: return false;
570: }
571:
572: function enableInput() {
573: this.document.client.elements.upass$now.removeAttribute("readOnly");
574: this.document.client.elements.uname.removeAttribute("readOnly");
575: this.document.client.elements.udom.removeAttribute("readOnly");
576: return;
577: }
578:
579: // ]]>
580: </script>
581:
582: ENDSCRIPT
583:
584: my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing,
585: $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip);
586: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
587: @hosts = &Apache::lonnet::current_machine_ids();
588: $lonhost_in_use = $lonhost;
589: if (@hosts > 1) {
590: foreach my $hostid (@hosts) {
591: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
592: $lonhost_in_use = $hostid;
593: last;
594: }
595: }
596: }
597: $saml_prefix = $defdom.'.login.saml_';
598: if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) {
599: $saml_landing = 1;
600: $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use};
601: $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use};
602: $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use};
603: $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use};
604: $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use};
605: $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use};
606: }
607: if ($saml_landing) {
608: if ($samlssotext eq '') {
609: $samlssotext = 'SSO Login';
610: }
611: if ($samlnonsso eq '') {
612: $samlnonsso = 'Non-SSO Login';
613: }
614: $js .= <<"ENDSAMLJS";
615:
616: <script type="text/javascript">
617: // <![CDATA[
618: function toggleLClogin() {
619: if (document.getElementById('LC_standard_login')) {
620: if (document.getElementById('LC_standard_login').style.display == 'none') {
621: document.getElementById('LC_standard_login').style.display = 'inline-block';
622: if (document.getElementById('LC_login_text')) {
623: document.getElementById('LC_login_text').innerHTML = '$samlnonsso';
624: }
625: if (document.getElementById('LC_SSO_login')) {
626: document.getElementById('LC_SSO_login').style.display = 'none';
627: }
628: } else {
629: document.getElementById('LC_standard_login').style.display = 'none';
630: if (document.getElementById('LC_login_text')) {
631: document.getElementById('LC_login_text').innerHTML = '$samlssotext';
632: }
633: if (document.getElementById('LC_SSO_login')) {
634: document.getElementById('LC_SSO_login').style.display = 'inline-block';
635: }
636: }
637: }
638: return;
639: }
640:
641: // ]]>
642: </script>
643:
644: ENDSAMLJS
645: }
646:
647: # --------------------------------------------------- Print login screen header
648:
649: my %add_entries = (
650: bgcolor => "$mainbg",
651: text => "$font",
652: link => "$link",
653: vlink => "$vlink",
654: alink => "$alink",
655: onload => 'javascript:enableInput();',);
656:
657: my ($headextra,$headextra_exempt,%defaultdomconf);
658: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
659: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
660: if ($headextra) {
661: my $omitextra;
662: if ($headextra_exempt ne '') {
663: my @exempt = split(',',$headextra_exempt);
664: my $ip = &Apache::lonnet::get_requestor_ip();
665: if (grep(/^\Q$ip\E$/,@exempt)) {
666: $omitextra = 1;
667: }
668: }
669: unless ($omitextra) {
670: my $confname = $defdom.'-domainconfig';
671: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
672: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
673: unless ($extra eq '-1') {
674: $js .= "\n".$extra."\n";
675: }
676: }
677: }
678: }
679:
680: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
681: { 'redirect' => [$expire,'/adm/roles'],
682: 'add_entries' => \%add_entries,
683: 'only_body' => 1,}));
684:
685: # ----------------------------------------------------------------------- Texts
686:
687: my %lt=&Apache::lonlocal::texthash(
688: 'un' => 'Username',
689: 'pw' => 'Password',
690: 'dom' => 'Domain',
691: 'perc' => 'percent',
692: 'load' => 'Server Load',
693: 'userload' => 'User Load',
694: 'catalog' => 'Course/Community Catalog',
695: 'log' => 'Log in',
696: 'help' => 'Log-in Help',
697: 'serv' => 'Server',
698: 'servadm' => 'Server Administration',
699: 'helpdesk' => 'Contact Helpdesk',
700: 'forgotpw' => 'Forgot password?',
701: 'newuser' => 'New User?',
702: 'change' => 'Change?',
703: );
704: # -------------------------------------------------- Change password field name
705:
706: my $forgotpw = &forgotpwdisplay(%lt);
707: $forgotpw .= '<br />' if $forgotpw;
708: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
709: if ($loginhelp) {
710: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
711: }
712:
713: # ---------------------------------------------------- Serve out DES JavaScript
714: {
715: my $jsh=Apache::File->new($include."/londes.js");
716: $r->print(<$jsh>);
717: }
718: # ---------------------------------------------------------- Serve rest of page
719:
720: $r->print(
721: '<div class="LC_Box"'
722: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
723: );
724:
725: $r->print(<<ENDSERVERFORM);
726: <form name="server" action="/adm/authenticate" method="post" target="_top">
727: <input type="hidden" name="logtoken" value="$logtoken" />
728: <input type="hidden" name="serverid" value="$lonhost" />
729: <input type="hidden" name="uname" value="" />
730: <input type="hidden" name="upass0" value="" />
731: <input type="hidden" name="udom" value="" />
732: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
733: <input type="hidden" name="localres" value="$env{'form.localres'}" />
734: </form>
735: ENDSERVERFORM
736: my $coursecatalog;
737: if (($showcoursecat eq '') || ($showcoursecat)) {
738: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
739: }
740: my $newuserlink;
741: if ($shownewuserlink) {
742: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
743: }
744: my $logintitle =
745: '<h2 class="LC_hcell"'
746: .' style="background:'.$loginbox_header_bgcol.';'
747: .' color:'.$loginbox_header_textcol.'">'
748: .$lt{'log'}
749: .'</h2>';
750:
751: my $noscript_warning='<noscript><span class="LC_warning"><b>'
752: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
753: .'</b></span></noscript>';
754: my $helpdeskscript;
755: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
756: $authdomain,\$helpdeskscript,
757: $showhelpdesk,\@possdoms);
758:
759: my $mobileargs;
760: if ($clientmobile) {
761: $mobileargs = 'autocapitalize="off" autocorrect="off"';
762: }
763: my $loginform=(<<LFORM);
764: <form name="client" action="" onsubmit="return(send())" id="lclogin">
765: <input type="hidden" name="lextkey" value="$lextkey" />
766: <input type="hidden" name="uextkey" value="$uextkey" />
767: <b><label for="uname">$lt{'un'}</label>:</b><br />
768: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
769: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
770: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
771: <b><label for="udom">$lt{'dom'}</label>:</b><br />
772: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
773: <input type="submit" value="$lt{'log'}" />
774: </form>
775: LFORM
776:
777: if ($showbanner) {
778: $r->print(<<HEADER);
779: <!-- The LON-CAPA Header -->
780: <div style="background:$pgbg;margin:0;width:100%;">
781: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
782: </div>
783: HEADER
784: }
785:
786: my $stdauthformstyle = 'inline-block';
787: my $ssoauthstyle = 'none';
788: my $logintype;
789: $r->print('<div style="float:left;margin-top:0;">');
790: if ($saml_landing) {
791: $ssoauthstyle = 'inline-block';
792: $stdauthformstyle = 'none';
793: $logintype = $samlssotext;
794: my $ssologin = '/adm/sso';
795: if ($samlssourl ne '') {
796: $ssologin = $samlssourl;
797: }
798: my $ssohref;
799: if ($samlssoimg ne '') {
800: $ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'"><img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" /></a>';
801: } else {
802: $ssohref = '<a href="'.$ssologin.'">'.$samlssotext.'</a>';
803: }
804: if ($env{'form.firsturl'}) {
805: $ssologin .= '?origurl='.&HTML::Entities::encode($env{'form.firsturl'},'<>&"');
806: }
807: if (($env{'form.saml'} eq 'no') ||
808: (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) {
809: $ssoauthstyle = 'none';
810: $stdauthformstyle = 'inline-block';
811: $logintype = $samlnonsso;
812: }
813: $r->print(<<ENDSAML);
814: <p>
815: Log-in type:
816: <span style="font-weight:bold" id="LC_login_text">$logintype</span><br />
817: <span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span>
818: </p>
819: <div style="display:$ssoauthstyle" id="LC_SSO_login">
820: <div class="LC_Box" style="padding-top: 10px;">
821: $ssohref
822: $noscript_warning
823: </div>
824: <div class="LC_Box" style="padding-top: 10px;">
825: $loginhelp
826: $contactblock
827: $coursecatalog
828: </div>
829: </div>
830: ENDSAML
831: }
832:
833: $r->print(<<ENDLOGIN);
834: <div style="display:$stdauthformstyle;" id="LC_standard_login">
835: <div class="LC_Box" style="background:$loginbox_bg;">
836: $logintitle
837: $loginform
838: $noscript_warning
839: </div>
840:
841: <div class="LC_Box" style="padding-top: 10px;">
842: $loginhelp
843: $forgotpw
844: $contactblock
845: $newuserlink
846: $coursecatalog
847: </div>
848: </div>
849:
850: ENDLOGIN
851: $r->print('</div><div>'."\n");
852: if ($showmainlogo) {
853: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
854: }
855: $r->print(<<ENDTOP);
856: $announcements
857: </div>
858: <hr style="clear:both;" />
859: ENDTOP
860: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
861: $domainrow = <<"END";
862: <tr>
863: <td align="left" valign="top">
864: <small><b>$lt{'dom'}: </b></small>
865: </td>
866: <td align="left" valign="top">
867: <small><tt> $domain</tt></small>
868: </td>
869: </tr>
870: END
871: $serverrow = <<"END";
872: <tr>
873: <td align="left" valign="top">
874: <small><b>$lt{'serv'}: </b></small>
875: </td>
876: <td align="left" valign="top">
877: <small><tt> $lonhost ($role)</tt></small>
878: </td>
879: </tr>
880: END
881: if ($loadlim) {
882: $loadrow = <<"END";
883: <tr>
884: <td align="left" valign="top">
885: <small><b>$lt{'load'}: </b></small>
886: </td>
887: <td align="left" valign="top">
888: <small><tt> $loadpercent $lt{'perc'}</tt></small>
889: </td>
890: </tr>
891: END
892: }
893: if ($uloadlim) {
894: $userloadrow = <<"END";
895: <tr>
896: <td align="left" valign="top">
897: <small><b>$lt{'userload'}: </b></small>
898: </td>
899: <td align="left" valign="top">
900: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
901: </td>
902: </tr>
903: END
904: }
905: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
906: $versionrow = <<"END";
907: <tr>
908: <td colspan="2" align="left">
909: <small>$version</small>
910: </td>
911: </tr>
912: END
913: }
914:
915: $r->print(<<ENDDOCUMENT);
916: <div style="float: left;">
917: <table border="0" cellspacing="0" cellpadding="0">
918: $domainrow
919: $serverrow
920: $loadrow
921: $userloadrow
922: $versionrow
923: </table>
924: </div>
925: <div style="float: right;">
926: $domainlogo
927: </div>
928: <br style="clear:both;" />
929: </div>
930:
931: <script type="text/javascript">
932: // <![CDATA[
933: // the if prevents the script error if the browser can not handle this
934: if ( document.client.uname ) { document.client.uname.focus(); }
935: // ]]>
936: </script>
937: $helpdeskscript
938:
939: ENDDOCUMENT
940: my %endargs = ( 'noredirectlink' => 1, );
941: $r->print(&Apache::loncommon::end_page(\%endargs));
942: return OK;
943: }
944:
945: sub check_loginvia {
946: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_;
947: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
948: return;
949: }
950: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
951: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
952: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
953: my $output;
954: if ($loginvia ne '') {
955: my $noredirect;
956: my $ip = &Apache::lonnet::get_requestor_ip();
957: if ($ip eq '127.0.0.1') {
958: $noredirect = 1;
959: } else {
960: if ($loginvia_exempt ne '') {
961: my @exempt = split(',',$loginvia_exempt);
962: if (grep(/^\Q$ip\E$/,@exempt)) {
963: $noredirect = 1;
964: }
965: }
966: }
967: unless ($noredirect) {
968: my ($newhost,$path);
969: if ($loginvia =~ /:/) {
970: ($newhost,$path) = split(':',$loginvia);
971: } else {
972: $newhost = $loginvia;
973: }
974: if ($newhost ne $lonhost) {
975: if (&Apache::lonnet::hostname($newhost) ne '') {
976: if ($balcookie) {
977: my ($balancer,$cookie) = split(/:/,$balcookie);
978: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
979: my ($udom,$uname,$cookieid) = ($1,$2,$3);
980: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
981: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
982: while (my $filename=readdir($dh)) {
983: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
984: my $handle = $1;
985: my %hash =
986: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
987: ['request.balancercookie',
988: 'user.linkedenv']);
989: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
990: if (unlink("$lonidsdir/$filename")) {
991: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
992: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
993: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
994: unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
995: }
996: }
997: }
998: last;
999: }
1000: }
1001: closedir($dh);
1002: }
1003: }
1004: }
1005: }
1006: $output = &redirect_page($newhost,$path,$linkprot);
1007: }
1008: }
1009: }
1010: }
1011: return $output;
1012: }
1013:
1014: sub redirect_page {
1015: my ($desthost,$path,$linkprot) = @_;
1016: my $hostname = &Apache::lonnet::hostname($desthost);
1017: my $protocol = $Apache::lonnet::protocol{$desthost};
1018: $protocol = 'http' if ($protocol ne 'https');
1019: unless ($path =~ m{^/}) {
1020: $path = '/'.$path;
1021: }
1022: my $url = $protocol.'://'.$hostname.$path;
1023: if ($env{'form.firsturl'} ne '') {
1024: $url .='?firsturl='.$env{'form.firsturl'};
1025: }
1026: if ($linkprot) {
1027: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost);
1028: if ($ltoken) {
1029: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken;
1030: }
1031: }
1032: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
1033: {'redirect' => [0,$url],});
1034: my $end_page = &Apache::loncommon::end_page();
1035: return $start_page.$end_page;
1036: }
1037:
1038: sub contactdisplay {
1039: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
1040: $possdoms) = @_;
1041: my $contactblock;
1042: my $origmail;
1043: if (ref($possdoms) eq 'ARRAY') {
1044: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
1045: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
1046: }
1047: }
1048: my $requestmail =
1049: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
1050: $authdomain,$origmail);
1051: unless ($showhelpdesk eq '0') {
1052: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
1053: $showhelpdesk = 1;
1054: } else {
1055: $showhelpdesk = 0;
1056: }
1057: }
1058: if ($servadm && $showadminmail) {
1059: $contactblock .= $$lt{'servadm'}.':<br />'.
1060: '<tt>'.$servadm.'</tt><br />';
1061: }
1062: if ($showhelpdesk) {
1063: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
1064: my $thisurl = &escape('/adm/login');
1065: $$helpdeskscript = <<"ENDSCRIPT";
1066: <script type="text/javascript">
1067: // <![CDATA[
1068: function helpdesk() {
1069: var possdom = document.client.udom.value;
1070: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
1071: if (codedom == '') {
1072: codedom = "$authdomain";
1073: }
1074: var querystr = "origurl=$thisurl&codedom="+codedom;
1075: document.location.href = "/adm/helpdesk?"+querystr;
1076: return;
1077: }
1078: // ]]>
1079: </script>
1080: ENDSCRIPT
1081: }
1082: return $contactblock;
1083: }
1084:
1085: sub forgotpwdisplay {
1086: my (%lt) = @_;
1087: my $prompt_for_resetpw = 1;
1088: if ($prompt_for_resetpw) {
1089: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
1090: }
1091: return;
1092: }
1093:
1094: sub coursecatalog_link {
1095: my ($linkname) = @_;
1096: return <<"END";
1097: <a href="/adm/coursecatalog">$linkname</a>
1098: END
1099: }
1100:
1101: sub newuser_link {
1102: my ($linkname) = @_;
1103: return '<a href="/adm/createaccount">'.$linkname.'</a>';
1104: }
1105:
1106: 1;
1107: __END__
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