1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.158.2.13.2.7 2022/08/30 12:28:08 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: $ENV{'REDIRECT_QUERY_STRING'}),
51: ['interface','username','domain','firsturl','localpath','localres',
52: 'token','role','symb','iptoken','btoken','ltoken','ttoken','linkkey',
53: 'saml','sso','retry']);
54:
55: # -- check if they are a migrating user
56: if (defined($env{'form.token'})) {
57: return &Apache::migrateuser::handler($r);
58: }
59:
60: my $lonhost = $r->dir_config('lonHostID');
61: if ($env{'form.ttoken'}) {
62: my %info = &Apache::lonnet::tmpget($env{'form.ttoken'});
63: &Apache::lonnet::tmpdel($env{'form.ttoken'});
64: if ($info{'origurl'}) {
65: $env{'form.firsturl'} = $info{'origurl'};
66: }
67: if ($info{'ltoken'}) {
68: $env{'form.ltoken'} = $info{'ltoken'};
69: } elsif ($info{'linkprot'}) {
70: $env{'form.linkprot'} = $info{'linkprot'};
71: foreach my $item ('linkprotuser','linkprotexit') {
72: if ($info{$item} ne '') {
73: $env{'form.'.$item} = $info{$item};
74: }
75: }
76: } elsif ($info{'linkkey'} ne '') {
77: $env{'form.linkkey'} = $info{'linkkey'};
78: }
79: } elsif (($env{'form.sso'}) || ($env{'form.retry'})) {
80: my $infotoken;
81: if ($env{'form.sso'}) {
82: $infotoken = $env{'form.sso'};
83: } else {
84: $infotoken = $env{'form.retry'};
85: }
86: my $data = &Apache::lonnet::reply('tmpget:'.$infotoken,$lonhost);
87: unless (($data=~/^error/) || ($data eq 'con_lost') ||
88: ($data eq 'no_such_host')) {
89: my %info = &decode_token($data);
90: foreach my $item (keys(%info)) {
91: $env{'form.'.$item} = $info{$item};
92: }
93: &Apache::lonnet::tmpdel($infotoken);
94: }
95: } else {
96: if (!defined($env{'form.firsturl'})) {
97: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
98: }
99: if (!defined($env{'form.firsturl'})) {
100: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) {
101: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'};
102: }
103: }
104: if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) &&
105: (!$env{'form.ltoken'}) && (!$env{'form.linkprot'}) && (!$env{'form.linkkey'})) {
106: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
107: }
108: if ($env{'form.firsturl'} eq '/adm/logout') {
109: delete($env{'form.firsturl'});
110: }
111: }
112:
113: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
114: my ($handle,$lonidsdir,$expirepub,$userdom);
115: $lonidsdir=$r->dir_config('lonIDsDir');
116: unless ($r->header_only) {
117: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
118: if ($handle ne '') {
119: if ($handle=~/^publicuser\_/) {
120: unlink($r->dir_config('lonIDsDir')."/$handle.id");
121: undef($handle);
122: undef($userdom);
123: $expirepub = 1;
124: }
125: }
126: }
127:
128: &Apache::loncommon::no_cache($r);
129: &Apache::lonlocal::get_language_handle($r);
130: &Apache::loncommon::content_type($r,'text/html');
131: if ($expirepub) {
132: my $c = new CGI::Cookie(-name => 'lonPubID',
133: -value => '',
134: -expires => '-10y',);
135: $r->header_out('Set-cookie' => $c);
136: } elsif (($handle eq '') && ($userdom ne '')) {
137: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
138: foreach my $name (keys(%cookies)) {
139: next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
140: my $c = new CGI::Cookie(-name => $name,
141: -value => '',
142: -expires => '-10y',);
143: $r->headers_out->add('Set-cookie' => $c);
144: }
145: }
146: $r->send_http_header;
147: return OK if $r->header_only;
148:
149:
150: # Are we re-routing?
151: my $londocroot = $r->dir_config('lonDocRoot');
152: if (-e "$londocroot/lon-status/reroute.txt") {
153: &Apache::lonauth::reroute($r);
154: return OK;
155: }
156:
157: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
158:
159: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
160: if ($found_server) {
161: my $hostname = &Apache::lonnet::hostname($found_server);
162: if ($hostname ne '') {
163: my $protocol = $Apache::lonnet::protocol{$found_server};
164: $protocol = 'http' if ($protocol ne 'https');
165: my $dest = '/adm/roles';
166: if ($env{'form.firsturl'} ne '') {
167: $dest = &HTML::Entities::encode($env{'form.firsturl'},'\'"<>&');
168: }
169: my %info = (
170: balcookie => $lonhost.':'.$balancer_cookie,
171: );
172: if ($env{'form.role'}) {
173: $info{'role'} = $env{'form.role'};
174: }
175: if ($env{'form.symb'}) {
176: $info{'symb'} = $env{'form.symb'};
177: }
178: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server);
179: unless (($balancer_token eq 'con_lost') || ($balancer_token eq 'refused') ||
180: ($balancer_token eq 'unknown_cmd') || ($balancer_token eq 'no_such_host')) {
181: $dest .= (($dest=~/\?/)?'&':'?') . 'btoken='.$balancer_token;
182: }
183: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
184: my %link_info;
185: if ($env{'form.ltoken'}) {
186: $link_info{'ltoken'} = $env{'form.ltoken'};
187: } elsif ($env{'form.linkprot'}) {
188: $link_info{'linkprot'} = $env{'form.linkprot'};
189: foreach my $item ('linkprotuser','linkprotexit') {
190: if ($env{'form.'.$item} ne '') {
191: $link_info{$item} = $env{'form.'.$item};
192: }
193: }
194: } elsif ($env{'form.linkkey'} ne '') {
195: $link_info{'linkkey'} = $env{'form.linkkey'};
196: }
197: if (keys(%link_info)) {
198: $link_info{'origurl'} = $env{'form.firsturl'};
199: my $token = &Apache::lonnet::tmpput(\%link_info,$found_server,'link');
200: unless (($token eq 'con_lost') || ($token eq 'refused') ||
201: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
202: $dest .= (($dest=~/\?/)?'&':'?') . 'ttoken='.$token;
203: }
204: }
205: }
206: unless ($found_server eq $lonhost) {
207: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server);
208: $hostname = $alias if ($alias ne '');
209: }
210: my $url = $protocol.'://'.$hostname.$dest;
211: my $start_page =
212: &Apache::loncommon::start_page('Switching Server ...',undef,
213: {'redirect' => [0,$url],});
214: my $end_page = &Apache::loncommon::end_page();
215: $r->print($start_page.$end_page);
216: return OK;
217: }
218: }
219:
220: #
221: # Check if a LON-CAPA load balancer sent user here because user's browser sent
222: # it a balancer cookie for an active session on this server.
223: #
224:
225: my $balcookie;
226: if ($env{'form.btoken'}) {
227: my %info = &Apache::lonnet::tmpget($env{'form.btoken'});
228: $balcookie = $info{'balcookie'};
229: &Apache::lonnet::tmpdel($env{'form.btoken'});
230: delete($env{'form.btoken'});
231: }
232:
233: #
234: # If browser sent an old cookie for which the session file had been removed
235: # check if configuration for user's domain has a portal URL set. If so
236: # switch user's log-in to the portal.
237: #
238:
239: if (($handle eq '') && ($userdom ne '')) {
240: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
241: if ($domdefaults{'portal_def'} =~ /^https?\:/) {
242: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
243: {'redirect' => [0,$domdefaults{'portal_def'}],});
244: my $end_page = &Apache::loncommon::end_page();
245: $r->print($start_page.$end_page);
246: return OK;
247: }
248: }
249:
250: # -------------------------------- Prevent users from attempting to login twice
251: if ($handle ne '') {
252: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
253: my $start_page =
254: &Apache::loncommon::start_page('Already logged in');
255: my $end_page =
256: &Apache::loncommon::end_page();
257: my $dest = '/adm/roles';
258: if ($env{'form.firsturl'} ne '') {
259: $dest = &HTML::Entities::encode($env{'form.firsturl'},'\'"<>&');
260: }
261: if (($env{'form.ltoken'}) || ($env{'form.linkprot'})) {
262: my ($linkprot,$linkprotuser,$linkprotexit);
263: if ($env{'form.ltoken'}) {
264: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
265: $linkprot = $info{'linkprot'};
266: if ($info{'linkprotuser'} ne '') {
267: $linkprotuser = $info{'linkprotuser'};
268: }
269: if ($info{'linkprotexit'} ne '') {
270: $linkprotexit = $info{'linkprotexit'};
271: }
272: } else {
273: $linkprot = $env{'form.linkprot'};
274: $linkprotuser = $env{'form.linkprotuser'};
275: $linkprotexit = $env{'form.linkprotexit'};
276: }
277: if ($linkprot) {
278: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2);
279: if (($deeplink =~ m{^/tiny/$match_domain/\w+$}) &&
280: ($linkprotuser ne '') && ($linkprotuser ne $env{'user.name'}.':'.$env{'user.domain'})) {
281: my $ip = &Apache::lonnet::get_requestor_ip();
282: my %linkprotinfo = (
283: origurl => $deeplink,
284: linkprot => $linkprot,
285: linkprotuser => $linkprotuser,
286: linkprotexit => $linkprotexit,
287: );
288: if ($env{'form.ltoken'}) {
289: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
290: }
291: &Apache::migrateuser::logout($r,$ip,$handle,undef,undef,\%linkprotinfo);
292: return OK;
293: }
294: if ($env{'user.linkprotector'}) {
295: my @protectors = split(/,/,$env{'user.linkprotector'});
296: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
297: push(@protectors,$linkprotector);
298: @protectors = sort { $a <=> $b } @protectors;
299: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
300: }
301: } else {
302: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
303: }
304: if ($env{'user.linkproturi'}) {
305: my @proturis = split(/,/,$env{'user.linkproturi'});
306: unless (grep(/^\Q$deeplink\E$/,@proturis)) {
307: push(@proturis,$deeplink);
308: @proturis = sort @proturis;
309: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
310: }
311: } else {
312: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
313: }
314: }
315: } elsif ($env{'form.linkkey'} ne '') {
316: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
317: my $linkkey = $env{'form.linkkey'};
318: if ($env{'user.deeplinkkey'}) {
319: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
320: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
321: push(@linkkeys,$linkkey);
322: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
323: }
324: } else {
325: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
326: }
327: my $deeplink = $env{'form.firsturl'};
328: if ($env{'user.keyedlinkuri'}) {
329: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
330: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
331: push(@keyeduris,$deeplink);
332: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
333: }
334: } else {
335: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
336: }
337: }
338: }
339: if ($env{'form.ltoken'}) {
340: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
341: }
342: $r->print(
343: $start_page
344: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
345: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
346: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
347: .$end_page
348: );
349: return OK;
350: }
351:
352: # ---------------------------------------------------- No valid token, continue
353:
354: # ---------------------------- Not possible to really login to domain "public"
355: if ($env{'form.domain'} eq 'public') {
356: $env{'form.domain'}='';
357: $env{'form.username'}='';
358: }
359:
360: # ------ Is this page requested because /adm/migrateuser detected an IP change?
361: my %sessiondata;
362: if ($env{'form.iptoken'}) {
363: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
364: unless ($sessiondata{'sessionserver'}) {
365: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
366: delete($env{'form.iptoken'});
367: }
368: }
369: # ----------------------------------------------------------- Process Interface
370: $env{'form.interface'}=~s/\W//g;
371:
372: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
373: &Apache::loncommon::decode_user_agent($r);
374:
375: my $iconpath=
376: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
377:
378: my $domain = &Apache::lonnet::default_login_domain();
379: my $defdom = $domain;
380: if ($lonhost ne '') {
381: unless ($sessiondata{'sessionserver'}) {
382: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie);
383: if ($redirect) {
384: $r->print($redirect);
385: return OK;
386: }
387: }
388: }
389:
390: if (($sessiondata{'domain'}) &&
391: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) {
392: $domain=$sessiondata{'domain'};
393: } elsif (($env{'form.domain'}) &&
394: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
395: $domain=$env{'form.domain'};
396: }
397:
398: my $role = $r->dir_config('lonRole');
399: my $loadlim = $r->dir_config('lonLoadLim');
400: my $uloadlim= $r->dir_config('lonUserLoadLim');
401: my $servadm = $r->dir_config('lonAdmEMail');
402: my $tabdir = $r->dir_config('lonTabDir');
403: my $include = $r->dir_config('lonIncludes');
404: my $expire = $r->dir_config('lonExpire');
405: my $version = $r->dir_config('lonVersion');
406: my $host_name = &Apache::lonnet::hostname($lonhost);
407:
408: # --------------------------------------------- Default values for login fields
409:
410: my ($authusername,$authdomain);
411: if ($sessiondata{'username'}) {
412: $authusername=$sessiondata{'username'};
413: } else {
414: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
415: $authusername=($env{'form.username'}?$env{'form.username'}:'');
416: }
417: if ($sessiondata{'domain'}) {
418: $authdomain=$sessiondata{'domain'};
419: } else {
420: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
421: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
422: }
423:
424: # ---------------------------------------------------------- Determine own load
425: my $loadavg;
426: {
427: my $loadfile=Apache::File->new('/proc/loadavg');
428: $loadavg=<$loadfile>;
429: }
430: $loadavg =~ s/\s.*//g;
431:
432: my ($loadpercent,$userloadpercent);
433: if ($loadlim) {
434: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
435: }
436: if ($uloadlim) {
437: $userloadpercent=&Apache::lonnet::userload();
438: }
439:
440: my $firsturl=
441: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
442:
443: # ----------------------------------------------------------- Get announcements
444: my $announcements=&Apache::lonnet::getannounce();
445: # -------------------------------------------------------- Set login parameters
446:
447: my @hexstr=('0','1','2','3','4','5','6','7',
448: '8','9','a','b','c','d','e','f');
449: my $lkey='';
450: for (0..7) {
451: $lkey.=$hexstr[rand(15)];
452: }
453:
454: my $ukey='';
455: for (0..7) {
456: $ukey.=$hexstr[rand(15)];
457: }
458:
459: my $lextkey=hex($lkey);
460: if ($lextkey>2147483647) { $lextkey-=4294967296; }
461:
462: my $uextkey=hex($ukey);
463: if ($uextkey>2147483647) { $uextkey-=4294967296; }
464:
465: # -------------------------------------------------------- Store away log token
466: my ($tokenextras,$tokentype,$linkprot_for_login);
467: my @names = ('role','symb','iptoken','ltoken','linkprotuser','linkprotexit','linkprot','linkkey');
468: foreach my $name (@names) {
469: if ($env{'form.'.$name} ne '') {
470: if ($name eq 'ltoken') {
471: my %info = &Apache::lonnet::tmpget($env{'form.'.$name});
472: if ($info{'linkprot'}) {
473: $linkprot_for_login = $info{'linkprot'};
474: $tokenextras .= '&linkprot='.&escape($info{'linkprot'});
475: foreach my $item ('linkprotuser','linkprotexit') {
476: if ($info{$item}) {
477: $tokenextras .= '&'.$item.'='.&escape($info{$item});
478: }
479: }
480: $tokentype = 'link';
481: last;
482: }
483: } else {
484: $tokenextras .= '&'.$name.'='.&escape($env{'form.'.$name});
485: if (($name eq 'linkkey') || ($name eq 'linkprot')) {
486: if ((($env{'form.retry'}) || ($env{'form.sso'})) &&
487: (!$env{'form.ltoken'}) && ($name eq 'linkprot')) {
488: $linkprot_for_login = $env{'form.linkprot'};
489: }
490: $tokentype = 'link';
491: }
492: }
493: }
494: }
495: if ($tokentype) {
496: $tokenextras .= ":$tokentype";
497: }
498: my $logtoken=Apache::lonnet::reply(
499: 'tmpput:'.$ukey.$lkey.'&'.&escape($firsturl).$tokenextras,
500: $lonhost);
501:
502: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
503: # we are in serious trouble
504:
505: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
506: if ($logtoken eq 'no_such_host') {
507: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
508: }
509: if ($env{'form.ltoken'}) {
510: &Apache::lonnet::tmpdel($env{'form.ltoken'});
511: delete($env{'form.ltoken'});
512: }
513: my $spares='';
514: my (@sparehosts,%spareservers);
515: my $sparesref = &Apache::lonnet::this_host_spares($defdom);
516: if (ref($sparesref) eq 'HASH') {
517: foreach my $key (keys(%{$sparesref})) {
518: if (ref($sparesref->{$key}) eq 'ARRAY') {
519: my @sorted = sort { &Apache::lonnet::hostname($a) cmp
520: &Apache::lonnet::hostname($b);
521: } @{$sparesref->{$key}};
522: if (@sorted) {
523: if ($key eq 'primary') {
524: unshift(@sparehosts,@sorted);
525: } elsif ($key eq 'default') {
526: push(@sparehosts,@sorted);
527: }
528: }
529: }
530: }
531: }
532: foreach my $hostid (@sparehosts) {
533: next if ($hostid eq $lonhost);
534: my $hostname = &Apache::lonnet::hostname($hostid);
535: next if (($hostname eq '') || ($spareservers{$hostname}));
536: $spareservers{$hostname} = 1;
537: my $protocol = $Apache::lonnet::protocol{$hostid};
538: $protocol = 'http' if ($protocol ne 'https');
539: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'.
540: $hostname.
541: '/adm/login?domain='.$authdomain.'">'.
542: $hostname.'</a>'.
543: ' '.&mt('(preferred)').'</span>'.$/;
544: }
545: if ($spares) {
546: $spares.= '<br />';
547: }
548: my %all_hostnames = &Apache::lonnet::all_hostnames();
549: foreach my $hostid (sort
550: {
551: &Apache::lonnet::hostname($a) cmp
552: &Apache::lonnet::hostname($b);
553: }
554: keys(%all_hostnames)) {
555: next if ($hostid eq $lonhost);
556: my $hostname = &Apache::lonnet::hostname($hostid);
557: next if (($hostname eq '') || ($spareservers{$hostname}));
558: $spareservers{$hostname} = 1;
559: my $protocol = $Apache::lonnet::protocol{$hostid};
560: $protocol = 'http' if ($protocol ne 'https');
561: $spares.='<br /><a href="'.$protocol.'://'.
562: $hostname.
563: '/adm/login?domain='.$authdomain.'">'.
564: $hostname.'</a>';
565: }
566: $r->print(
567: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
568: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
569: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>'
570: .&mt('The LearningOnline Network with CAPA')
571: .'</title></head>'
572: .'<body bgcolor="#FFFFFF">'
573: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
574: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />'
575: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
576: if ($spares) {
577: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
578: .'</p>'
579: .$spares);
580: }
581: $r->print('</body>'
582: .'</html>'
583: );
584: return OK;
585: }
586:
587: # ----------------------------------------------- Apparently we are in business
588: $servadm=~s/\,/\<br \/\>/g;
589:
590: # ----------------------------------------------------------- Front page design
591: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
592: my $font=&Apache::loncommon::designparm('login.font',$domain);
593: my $link=&Apache::loncommon::designparm('login.link',$domain);
594: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
595: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
596: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
597: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
598: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
599: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
600: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
601: my $img=&Apache::loncommon::designparm('login.img',$domain);
602: my $domainlogo=&Apache::loncommon::domainlogo($domain);
603: my $showbanner = 1;
604: my $showmainlogo = 1;
605: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
606: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
607: }
608: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
609: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
610: }
611: my $showadminmail;
612: my @possdoms = &Apache::lonnet::current_machine_domains();
613: if (grep(/^\Q$domain\E$/,@possdoms)) {
614: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
615: }
616: my $showcoursecat =
617: &Apache::loncommon::designparm('login.coursecatalog',$domain);
618: my $shownewuserlink =
619: &Apache::loncommon::designparm('login.newuser',$domain);
620: my $showhelpdesk =
621: &Apache::loncommon::designparm('login.helpdesk',$domain);
622: my $now=time;
623: my $js = (<<ENDSCRIPT);
624:
625: <script type="text/javascript" language="JavaScript">
626: // <![CDATA[
627: function send()
628: {
629: this.document.server.elements.uname.value
630: =this.document.client.elements.uname.value;
631:
632: this.document.server.elements.udom.value
633: =this.document.client.elements.udom.value;
634:
635: uextkey=this.document.client.elements.uextkey.value;
636: lextkey=this.document.client.elements.lextkey.value;
637: initkeys();
638:
639: this.document.server.elements.upass0.value
640: =getCrypted(this.document.client.elements.upass$now.value);
641:
642: this.document.client.elements.uname.value='';
643: this.document.client.elements.upass$now.value='';
644:
645: this.document.server.submit();
646: return false;
647: }
648:
649: function enableInput() {
650: this.document.client.elements.upass$now.removeAttribute("readOnly");
651: this.document.client.elements.uname.removeAttribute("readOnly");
652: this.document.client.elements.udom.removeAttribute("readOnly");
653: return;
654: }
655:
656: // ]]>
657: </script>
658:
659: ENDSCRIPT
660:
661: my ($lonhost_in_use,@hosts,%defaultdomconf,$saml_prefix,$saml_landing,
662: $samlssotext,$samlnonsso,$samlssoimg,$samlssoalt,$samlssourl,$samltooltip,
663: $samlwindow);
664: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
665: @hosts = &Apache::lonnet::current_machine_ids();
666: $lonhost_in_use = $lonhost;
667: if (@hosts > 1) {
668: foreach my $hostid (@hosts) {
669: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
670: $lonhost_in_use = $hostid;
671: last;
672: }
673: }
674: }
675: $saml_prefix = $defdom.'.login.saml_';
676: if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) {
677: $saml_landing = 1;
678: $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use};
679: $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use};
680: $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use};
681: $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use};
682: $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use};
683: $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use};
684: $samlwindow = $defaultdomconf{$saml_prefix.'window_'.$lonhost_in_use};
685: }
686: if ($saml_landing) {
687: if ($samlssotext eq '') {
688: $samlssotext = 'SSO Login';
689: }
690: if ($samlnonsso eq '') {
691: $samlnonsso = 'Non-SSO Login';
692: }
693: $js .= <<"ENDSAMLJS";
694:
695: <script type="text/javascript">
696: // <![CDATA[
697: function toggleLClogin() {
698: if (document.getElementById('LC_standard_login')) {
699: if (document.getElementById('LC_standard_login').style.display == 'none') {
700: document.getElementById('LC_standard_login').style.display = 'inline-block';
701: if (document.getElementById('LC_login_text')) {
702: document.getElementById('LC_login_text').innerHTML = '$samlnonsso';
703: }
704: if ( document.client.uname ) { document.client.uname.focus(); }
705: if (document.getElementById('LC_SSO_login')) {
706: document.getElementById('LC_SSO_login').style.display = 'none';
707: }
708: } else {
709: document.getElementById('LC_standard_login').style.display = 'none';
710: if (document.getElementById('LC_login_text')) {
711: document.getElementById('LC_login_text').innerHTML = '$samlssotext';
712: }
713: if (document.getElementById('LC_SSO_login')) {
714: document.getElementById('LC_SSO_login').style.display = 'inline-block';
715: }
716: }
717: }
718: return;
719: }
720:
721: // ]]>
722: </script>
723:
724: ENDSAMLJS
725: }
726:
727: # --------------------------------------------------- Print login screen header
728:
729: my %add_entries = (
730: bgcolor => "$mainbg",
731: text => "$font",
732: link => "$link",
733: vlink => "$vlink",
734: alink => "$alink",
735: onload => 'javascript:enableInput();',);
736:
737: my ($headextra,$headextra_exempt);
738: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
739: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
740: if ($headextra) {
741: my $omitextra;
742: if ($headextra_exempt ne '') {
743: my @exempt = split(',',$headextra_exempt);
744: my $ip = &Apache::lonnet::get_requestor_ip();
745: if (grep(/^\Q$ip\E$/,@exempt)) {
746: $omitextra = 1;
747: }
748: }
749: unless ($omitextra) {
750: my $confname = $defdom.'-domainconfig';
751: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
752: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
753: unless ($extra eq '-1') {
754: $js .= "\n".$extra."\n";
755: }
756: }
757: }
758: }
759:
760: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
761: { 'redirect' => [$expire,'/adm/roles'],
762: 'add_entries' => \%add_entries,
763: 'only_body' => 1,}));
764:
765: # ----------------------------------------------------------------------- Texts
766:
767: my %lt=&Apache::lonlocal::texthash(
768: 'un' => 'Username',
769: 'pw' => 'Password',
770: 'dom' => 'Domain',
771: 'perc' => 'percent',
772: 'load' => 'Server Load',
773: 'userload' => 'User Load',
774: 'catalog' => 'Course/Community Catalog',
775: 'log' => 'Log in',
776: 'help' => 'Log-in Help',
777: 'serv' => 'Server',
778: 'servadm' => 'Server Administration',
779: 'helpdesk' => 'Contact Helpdesk',
780: 'forgotpw' => 'Forgot password?',
781: 'newuser' => 'New User?',
782: 'change' => 'Change?',
783: );
784: # -------------------------------------------------- Change password field name
785:
786: my $forgotpw = &forgotpwdisplay(%lt);
787: $forgotpw .= '<br />' if $forgotpw;
788: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
789: if ($loginhelp) {
790: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
791: }
792:
793: # ---------------------------------------------------- Serve out DES JavaScript
794: {
795: my $jsh=Apache::File->new($include."/londes.js");
796: $r->print(<$jsh>);
797: }
798: # ---------------------------------------------------------- Serve rest of page
799:
800: $r->print(
801: '<div class="LC_Box"'
802: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
803: );
804:
805: $r->print(<<ENDSERVERFORM);
806: <form name="server" action="/adm/authenticate" method="post" target="_top">
807: <input type="hidden" name="logtoken" value="$logtoken" />
808: <input type="hidden" name="serverid" value="$lonhost" />
809: <input type="hidden" name="uname" value="" />
810: <input type="hidden" name="upass0" value="" />
811: <input type="hidden" name="udom" value="" />
812: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
813: <input type="hidden" name="localres" value="$env{'form.localres'}" />
814: </form>
815: ENDSERVERFORM
816: my $coursecatalog;
817: if (($showcoursecat eq '') || ($showcoursecat)) {
818: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
819: }
820: my $newuserlink;
821: if ($shownewuserlink) {
822: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
823: }
824: my $logintitle =
825: '<h2 class="LC_hcell"'
826: .' style="background:'.$loginbox_header_bgcol.';'
827: .' color:'.$loginbox_header_textcol.'">'
828: .$lt{'log'}
829: .'</h2>';
830:
831: my $noscript_warning='<noscript><span class="LC_warning"><b>'
832: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
833: .'</b></span></noscript>';
834: my $helpdeskscript;
835: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
836: $authdomain,\$helpdeskscript,
837: $showhelpdesk,\@possdoms);
838:
839: my $mobileargs;
840: if ($clientmobile) {
841: $mobileargs = 'autocapitalize="off" autocorrect="off"';
842: }
843: my $loginform=(<<LFORM);
844: <form name="client" action="" onsubmit="return(send())" id="lclogin">
845: <input type="hidden" name="lextkey" value="$lextkey" />
846: <input type="hidden" name="uextkey" value="$uextkey" />
847: <b><label for="uname">$lt{'un'}</label>:</b><br />
848: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
849: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
850: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
851: <b><label for="udom">$lt{'dom'}</label>:</b><br />
852: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
853: <input type="submit" value="$lt{'log'}" />
854: </form>
855: LFORM
856:
857: if ($showbanner) {
858: my $alttext = &Apache::loncommon::designparm('login.alttext_img',$domain);
859: if ($alttext eq '') {
860: $alttext = 'The Learning Online Network with CAPA';
861: }
862: $r->print(<<HEADER);
863: <!-- The LON-CAPA Header -->
864: <div style="background:$pgbg;margin:0;width:100%;">
865: <img src="$img" border="0" alt="$alttext" class="LC_maxwidth" id="lcloginbanner" />
866: </div>
867: HEADER
868: }
869:
870: my $stdauthformstyle = 'inline-block';
871: my $ssoauthstyle = 'none';
872: my $sso_onclick;
873: my $logintype;
874: $r->print('<div style="float:left;margin-top:0;">');
875: if ($saml_landing) {
876: $ssoauthstyle = 'inline-block';
877: $stdauthformstyle = 'none';
878: $logintype = $samlssotext;
879: my $ssologin = '/adm/sso';
880: if ($samlssourl ne '') {
881: $ssologin = $samlssourl;
882: }
883: my $ssologin_for_js = &js_escape($ssologin);
884: my $querystr_for_js;
885: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
886: my $querystring;
887: if ($env{'form.firsturl'} ne '') {
888: $querystring = 'origurl=';
889: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
890: $querystring .= &uri_escape_utf8($env{'form.firsturl'});
891: } else {
892: $querystring .= &uri_escape($env{'form.firsturl'});
893: }
894: $querystring = &HTML::Entities::encode($querystring,"'");
895: }
896: if ($env{'form.ltoken'} ne '') {
897: $querystring .= (($querystring eq '')?'':'&') . 'ltoken='.
898: &HTML::Entities::encode(&uri_escape($env{'form.ltoken'}));
899: } elsif ($env{'form.linkkey'}) {
900: $querystring .= (($querystring eq '')?'':'&') . 'linkkey='.
901: &HTML::Entities::encode(&uri_escape($env{'form.linkkey'}));
902: }
903: if ($querystring ne '') {
904: $ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring;
905: $querystr_for_js = &js_escape($querystring);
906: }
907: } elsif ($logtoken ne '') {
908: $ssologin .= (($ssologin=~/\?/)?'&':'?') . 'logtoken='.$logtoken;
909: $querystr_for_js = &js_escape('logtoken='.$logtoken);
910: }
911: my $ssohref;
912: if ($samlwindow) {
913: $sso_onclick = <<"ENDJS";
914: if (document.getElementById('LC_sso_login_link')) {
915: var ssoelem = document.getElementById('LC_sso_login_link')
916: ssoelem.addEventListener('click',samlWinFunction,false);
917: var windows = {};
918: function samlWinFunction(evt) {
919: evt.preventDefault();
920: var url = '$ssologin_for_js';
921: var name = 'lcssowin';
922: var querystr = '$querystr_for_js';
923: if (querystr) {
924: url += '?'+querystr+'&lcssowin=1';
925: } else {
926: url += '?lcssowin=1';
927: }
928: if ((typeof windows[name] !== 'undefined') && (!windows[name].closed)) {
929: windows[name].close();
930: }
931: windows[name]=window.open(url,name,'width=350,height=600');
932: windows[name].focus();
933: return false;
934: }
935: }
936: ENDJS
937: }
938: if ($samlssoimg ne '') {
939: $ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'" id="LC_sso_login_link">'.
940: '<img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" id="lcssobutton" /></a>';
941: } else {
942: $ssohref = '<a href="'.$ssologin.'" id="LC_sso_login_link">'.$samlssotext.'</a>';
943: }
944: if (($env{'form.saml'} eq 'no') ||
945: (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) {
946: $ssoauthstyle = 'none';
947: $stdauthformstyle = 'inline-block';
948: $logintype = $samlnonsso;
949: }
950: $r->print(<<ENDSAML);
951: <p>
952: Log-in type:
953: <span style="font-weight:bold" id="LC_login_text">$logintype</span><br />
954: <span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span>
955: </p>
956: <div style="display:$ssoauthstyle" id="LC_SSO_login">
957: <div class="LC_Box" style="padding-top: 10px;">
958: $ssohref
959: $noscript_warning
960: </div>
961: <div class="LC_Box" style="padding-top: 10px;">
962: $loginhelp
963: $contactblock
964: $coursecatalog
965: </div>
966: </div>
967: ENDSAML
968: } else {
969: if ($env{'form.ltoken'}) {
970: &Apache::lonnet::tmpdel($env{'form.ltoken'});
971: delete($env{'form.ltoken'});
972: }
973: }
974: my $in_frame_js;
975: if ($linkprot_for_login) {
976: my ($linkprotector,$linkproturi) = split(/:/,$linkprot_for_login,2);
977: if (($linkprotector =~ /^\d+(c|d)$/) && ($linkproturi =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$})) {
978: my $set_target;
979: if (($env{'form.retry'}) || ($env{'form.sso'})) {
980: if ($linkproturi eq $env{'form.firsturl'}) {
981: $set_target = " document.server.target = '_self';";
982: }
983: } else {
984: $set_target = <<ENDTARG;
985: var linkproturi = '$linkproturi';
986: var path = document.location.pathname.replace( new RegExp('^/adm/launch'),'');
987: if (linkproturi == path) {
988: document.server.target = '_self';
989: }
990: ENDTARG
991: }
992: $in_frame_js = <<ENDJS;
993: <script type="text/javascript">
994: // <![CDATA[
995: if ((window.self !== window.top) && (document.server.target != '_self')) {
996: $set_target
997: $sso_onclick
998: }
999: // ]]>
1000: </script>
1001: ENDJS
1002: }
1003: } elsif ($samlwindow) {
1004: $in_frame_js = <<ENDJS;
1005: <script type="text/javascript">
1006: // <![CDATA[
1007: if ((window.self !== window.top) && (document.server.target != '_self')) {
1008: $sso_onclick
1009: }
1010: // ]]>
1011: </script>
1012: ENDJS
1013: }
1014:
1015: $r->print(<<ENDLOGIN);
1016: <div style="display:$stdauthformstyle;" id="LC_standard_login">
1017: <div class="LC_Box" style="background:$loginbox_bg;">
1018: $logintitle
1019: $loginform
1020: $noscript_warning
1021: </div>
1022:
1023: <div class="LC_Box" style="padding-top: 10px;">
1024: $loginhelp
1025: $forgotpw
1026: $contactblock
1027: $newuserlink
1028: $coursecatalog
1029: </div>
1030: </div>
1031:
1032: ENDLOGIN
1033: $r->print('</div><div>'."\n");
1034: if ($showmainlogo) {
1035: my $alttext = &Apache::loncommon::designparm('login.alttext_logo',$domain);
1036: $r->print(' <img src="'.$logo.'" alt="'.$alttext.'" class="LC_maxwidth" id="lcloginmainlogo" />'."\n");
1037: }
1038: $r->print(<<ENDTOP);
1039: $announcements
1040: </div>
1041: <hr style="clear:both;" />
1042: ENDTOP
1043: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
1044: $domainrow = <<"END";
1045: <tr>
1046: <td align="left" valign="top">
1047: <small><b>$lt{'dom'}: </b></small>
1048: </td>
1049: <td align="left" valign="top">
1050: <small><tt> $domain</tt></small>
1051: </td>
1052: </tr>
1053: END
1054: $serverrow = <<"END";
1055: <tr>
1056: <td align="left" valign="top">
1057: <small><b>$lt{'serv'}: </b></small>
1058: </td>
1059: <td align="left" valign="top">
1060: <small><tt> $lonhost ($role)</tt></small>
1061: </td>
1062: </tr>
1063: END
1064: if ($loadlim) {
1065: $loadrow = <<"END";
1066: <tr>
1067: <td align="left" valign="top">
1068: <small><b>$lt{'load'}: </b></small>
1069: </td>
1070: <td align="left" valign="top">
1071: <small><tt> $loadpercent $lt{'perc'}</tt></small>
1072: </td>
1073: </tr>
1074: END
1075: }
1076: if ($uloadlim) {
1077: $userloadrow = <<"END";
1078: <tr>
1079: <td align="left" valign="top">
1080: <small><b>$lt{'userload'}: </b></small>
1081: </td>
1082: <td align="left" valign="top">
1083: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
1084: </td>
1085: </tr>
1086: END
1087: }
1088: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
1089: $versionrow = <<"END";
1090: <tr>
1091: <td colspan="2" align="left">
1092: <small>$version</small>
1093: </td>
1094: </tr>
1095: END
1096: }
1097:
1098: $r->print(<<ENDDOCUMENT);
1099: <div style="float: left;">
1100: <table border="0" cellspacing="0" cellpadding="0">
1101: $domainrow
1102: $serverrow
1103: $loadrow
1104: $userloadrow
1105: $versionrow
1106: </table>
1107: </div>
1108: <div style="float: right;">
1109: $domainlogo
1110: </div>
1111: <br style="clear:both;" />
1112: </div>
1113:
1114: $in_frame_js
1115: <script type="text/javascript">
1116: // <![CDATA[
1117: // the if prevents the script error if the browser can not handle this
1118: if ( document.client.uname ) { document.client.uname.focus(); }
1119: // ]]>
1120: </script>
1121: $helpdeskscript
1122:
1123: ENDDOCUMENT
1124: my %endargs = ( 'noredirectlink' => 1, );
1125: $r->print(&Apache::loncommon::end_page(\%endargs));
1126: return OK;
1127: }
1128:
1129: sub check_loginvia {
1130: my ($domain,$lonhost,$lonidsdir,$balcookie) = @_;
1131: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
1132: return;
1133: }
1134: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
1135: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
1136: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
1137: my $output;
1138: if ($loginvia ne '') {
1139: my $noredirect;
1140: my $ip = &Apache::lonnet::get_requestor_ip();
1141: if ($ip eq '127.0.0.1') {
1142: $noredirect = 1;
1143: } else {
1144: if ($loginvia_exempt ne '') {
1145: my @exempt = split(',',$loginvia_exempt);
1146: if (grep(/^\Q$ip\E$/,@exempt)) {
1147: $noredirect = 1;
1148: }
1149: }
1150: }
1151: unless ($noredirect) {
1152: my ($newhost,$path);
1153: if ($loginvia =~ /:/) {
1154: ($newhost,$path) = split(':',$loginvia);
1155: } else {
1156: $newhost = $loginvia;
1157: }
1158: if ($newhost ne $lonhost) {
1159: if (&Apache::lonnet::hostname($newhost) ne '') {
1160: if ($balcookie) {
1161: my ($balancer,$cookie) = split(/:/,$balcookie);
1162: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
1163: my ($udom,$uname,$cookieid) = ($1,$2,$3);
1164: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
1165: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
1166: while (my $filename=readdir($dh)) {
1167: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
1168: my $handle = $1;
1169: my %hash =
1170: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
1171: ['request.balancercookie',
1172: 'user.linkedenv']);
1173: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
1174: if (unlink("$lonidsdir/$filename")) {
1175: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
1176: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
1177: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
1178: unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
1179: }
1180: }
1181: }
1182: last;
1183: }
1184: }
1185: closedir($dh);
1186: }
1187: }
1188: }
1189: }
1190: $output = &redirect_page($newhost,$path);
1191: }
1192: }
1193: }
1194: }
1195: return $output;
1196: }
1197:
1198: sub redirect_page {
1199: my ($desthost,$path) = @_;
1200: my $hostname = &Apache::lonnet::hostname($desthost);
1201: my $protocol = $Apache::lonnet::protocol{$desthost};
1202: $protocol = 'http' if ($protocol ne 'https');
1203: unless ($path =~ m{^/}) {
1204: $path = '/'.$path;
1205: }
1206: my $url = $protocol.'://'.$hostname.$path;
1207: my $args = {};
1208: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
1209: $url = $protocol.'://'.$hostname.$env{'form.firsturl'};
1210: if (($env{'form.ltoken'}) || ($env{'form.linkprot'} ne '') ||
1211: ($env{'form.linkkey'} ne '')) {
1212: my %link_info;
1213: if ($env{'form.ltoken'}) {
1214: %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
1215: &Apache::lonnet::tmpdel($env{'form.ltoken'});
1216: $args->{'only_body'} = 1;
1217: } elsif ($env{'form.linkprot'}) {
1218: $link_info{'linkprot'} = $env{'form.linkprot'};
1219: foreach my $item ('linkprotuser','linkprotexit') {
1220: if ($env{'form.'.$item}) {
1221: $link_info{$item} = $env{'form.'.$item};
1222: }
1223: }
1224: $args->{'only_body'} = 1;
1225: } elsif ($env{'form.linkkey'} ne '') {
1226: $link_info{'linkkey'} = $env{'form.linkkey'};
1227: }
1228: my $token = &Apache::lonnet::tmpput(\%link_info,$desthost,'link');
1229: unless (($token eq 'con_lost') || ($token eq 'refused') ||
1230: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
1231: $url .= '?ltoken='.$token;
1232: }
1233: }
1234: } else {
1235: my $querystring;
1236: if ($env{'form.firsturl'} ne '') {
1237: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
1238: $querystring = &uri_escape_utf8($env{'form.firsturl'});
1239: } else {
1240: $querystring = &uri_escape($env{'form.firsturl'});
1241: }
1242: $querystring = &HTML::Entities::encode($querystring,"'");
1243: $querystring = '?firsturl='.$querystring;
1244: }
1245: if ($env{'form.ltoken'}) {
1246: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
1247: &Apache::lonnet::tmpdel($env{'form.ltoken'});
1248: my $token = &Apache::lonnet::tmpput(\%link_info,$desthost,'link');
1249: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
1250: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
1251: unless (($path eq '/adm/roles') || ($path eq '/adm/login')) {
1252: $url = $protocol.'://'.$hostname.'/adm/roles';
1253: }
1254: $querystring .= (($querystring =~/^\?/)?'&':'?') . 'ttoken='.$token;
1255: }
1256: }
1257: $url .= $querystring;
1258: }
1259: $args->{'redirect'} = [0,$url];
1260: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,$args);
1261: my $end_page = &Apache::loncommon::end_page();
1262: return $start_page.$end_page;
1263: }
1264:
1265: sub contactdisplay {
1266: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
1267: $possdoms) = @_;
1268: my $contactblock;
1269: my $origmail;
1270: if (ref($possdoms) eq 'ARRAY') {
1271: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
1272: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
1273: }
1274: }
1275: my $requestmail =
1276: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
1277: $authdomain,$origmail);
1278: unless ($showhelpdesk eq '0') {
1279: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
1280: $showhelpdesk = 1;
1281: } else {
1282: $showhelpdesk = 0;
1283: }
1284: }
1285: if ($servadm && $showadminmail) {
1286: $contactblock .= $$lt{'servadm'}.':<br />'.
1287: '<tt>'.$servadm.'</tt><br />';
1288: }
1289: if ($showhelpdesk) {
1290: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
1291: my $thisurl = &escape('/adm/login');
1292: $$helpdeskscript = <<"ENDSCRIPT";
1293: <script type="text/javascript">
1294: // <![CDATA[
1295: function helpdesk() {
1296: var possdom = document.client.udom.value;
1297: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
1298: if (codedom == '') {
1299: codedom = "$authdomain";
1300: }
1301: var querystr = "origurl=$thisurl&codedom="+codedom;
1302: document.location.href = "/adm/helpdesk?"+querystr;
1303: return;
1304: }
1305: // ]]>
1306: </script>
1307: ENDSCRIPT
1308: }
1309: return $contactblock;
1310: }
1311:
1312: sub forgotpwdisplay {
1313: my (%lt) = @_;
1314: my $prompt_for_resetpw = 1;
1315: if ($prompt_for_resetpw) {
1316: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
1317: }
1318: return;
1319: }
1320:
1321: sub coursecatalog_link {
1322: my ($linkname) = @_;
1323: return <<"END";
1324: <a href="/adm/coursecatalog">$linkname</a>
1325: END
1326: }
1327:
1328: sub newuser_link {
1329: my ($linkname) = @_;
1330: return '<a href="/adm/createaccount">'.$linkname.'</a>';
1331: }
1332:
1333: sub decode_token {
1334: my ($info) = @_;
1335: my ($firsturl,@rest)=split(/\&/,$info);
1336: my %form;
1337: if ($firsturl ne '') {
1338: $form{'firsturl'} = &unescape($firsturl);
1339: }
1340: foreach my $item (@rest) {
1341: my ($key,$value) = split(/=/,$item);
1342: $form{$key} = &unescape($value);
1343: }
1344: return %form;
1345: }
1346:
1347: 1;
1348: __END__
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