1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.158.2.13.2.6 2022/07/08 15:43:51 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: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
664: @hosts = &Apache::lonnet::current_machine_ids();
665: $lonhost_in_use = $lonhost;
666: if (@hosts > 1) {
667: foreach my $hostid (@hosts) {
668: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
669: $lonhost_in_use = $hostid;
670: last;
671: }
672: }
673: }
674: $saml_prefix = $defdom.'.login.saml_';
675: if ($defaultdomconf{$saml_prefix.$lonhost_in_use}) {
676: $saml_landing = 1;
677: $samlssotext = $defaultdomconf{$saml_prefix.'text_'.$lonhost_in_use};
678: $samlnonsso = $defaultdomconf{$saml_prefix.'notsso_'.$lonhost_in_use};
679: $samlssoimg = $defaultdomconf{$saml_prefix.'img_'.$lonhost_in_use};
680: $samlssoalt = $defaultdomconf{$saml_prefix.'alt_'.$lonhost_in_use};
681: $samlssourl = $defaultdomconf{$saml_prefix.'url_'.$lonhost_in_use};
682: $samltooltip = $defaultdomconf{$saml_prefix.'title_'.$lonhost_in_use};
683: }
684: if ($saml_landing) {
685: if ($samlssotext eq '') {
686: $samlssotext = 'SSO Login';
687: }
688: if ($samlnonsso eq '') {
689: $samlnonsso = 'Non-SSO Login';
690: }
691: $js .= <<"ENDSAMLJS";
692:
693: <script type="text/javascript">
694: // <![CDATA[
695: function toggleLClogin() {
696: if (document.getElementById('LC_standard_login')) {
697: if (document.getElementById('LC_standard_login').style.display == 'none') {
698: document.getElementById('LC_standard_login').style.display = 'inline-block';
699: if (document.getElementById('LC_login_text')) {
700: document.getElementById('LC_login_text').innerHTML = '$samlnonsso';
701: }
702: if ( document.client.uname ) { document.client.uname.focus(); }
703: if (document.getElementById('LC_SSO_login')) {
704: document.getElementById('LC_SSO_login').style.display = 'none';
705: }
706: } else {
707: document.getElementById('LC_standard_login').style.display = 'none';
708: if (document.getElementById('LC_login_text')) {
709: document.getElementById('LC_login_text').innerHTML = '$samlssotext';
710: }
711: if (document.getElementById('LC_SSO_login')) {
712: document.getElementById('LC_SSO_login').style.display = 'inline-block';
713: }
714: }
715: }
716: return;
717: }
718:
719: // ]]>
720: </script>
721:
722: ENDSAMLJS
723: }
724:
725: # --------------------------------------------------- Print login screen header
726:
727: my %add_entries = (
728: bgcolor => "$mainbg",
729: text => "$font",
730: link => "$link",
731: vlink => "$vlink",
732: alink => "$alink",
733: onload => 'javascript:enableInput();',);
734:
735: my ($headextra,$headextra_exempt);
736: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
737: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
738: if ($headextra) {
739: my $omitextra;
740: if ($headextra_exempt ne '') {
741: my @exempt = split(',',$headextra_exempt);
742: my $ip = &Apache::lonnet::get_requestor_ip();
743: if (grep(/^\Q$ip\E$/,@exempt)) {
744: $omitextra = 1;
745: }
746: }
747: unless ($omitextra) {
748: my $confname = $defdom.'-domainconfig';
749: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
750: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
751: unless ($extra eq '-1') {
752: $js .= "\n".$extra."\n";
753: }
754: }
755: }
756: }
757:
758: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
759: { 'redirect' => [$expire,'/adm/roles'],
760: 'add_entries' => \%add_entries,
761: 'only_body' => 1,}));
762:
763: # ----------------------------------------------------------------------- Texts
764:
765: my %lt=&Apache::lonlocal::texthash(
766: 'un' => 'Username',
767: 'pw' => 'Password',
768: 'dom' => 'Domain',
769: 'perc' => 'percent',
770: 'load' => 'Server Load',
771: 'userload' => 'User Load',
772: 'catalog' => 'Course/Community Catalog',
773: 'log' => 'Log in',
774: 'help' => 'Log-in Help',
775: 'serv' => 'Server',
776: 'servadm' => 'Server Administration',
777: 'helpdesk' => 'Contact Helpdesk',
778: 'forgotpw' => 'Forgot password?',
779: 'newuser' => 'New User?',
780: 'change' => 'Change?',
781: );
782: # -------------------------------------------------- Change password field name
783:
784: my $forgotpw = &forgotpwdisplay(%lt);
785: $forgotpw .= '<br />' if $forgotpw;
786: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
787: if ($loginhelp) {
788: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
789: }
790:
791: # ---------------------------------------------------- Serve out DES JavaScript
792: {
793: my $jsh=Apache::File->new($include."/londes.js");
794: $r->print(<$jsh>);
795: }
796: # ---------------------------------------------------------- Serve rest of page
797:
798: $r->print(
799: '<div class="LC_Box"'
800: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
801: );
802:
803: $r->print(<<ENDSERVERFORM);
804: <form name="server" action="/adm/authenticate" method="post" target="_top">
805: <input type="hidden" name="logtoken" value="$logtoken" />
806: <input type="hidden" name="serverid" value="$lonhost" />
807: <input type="hidden" name="uname" value="" />
808: <input type="hidden" name="upass0" value="" />
809: <input type="hidden" name="udom" value="" />
810: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
811: <input type="hidden" name="localres" value="$env{'form.localres'}" />
812: </form>
813: ENDSERVERFORM
814: my $coursecatalog;
815: if (($showcoursecat eq '') || ($showcoursecat)) {
816: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
817: }
818: my $newuserlink;
819: if ($shownewuserlink) {
820: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
821: }
822: my $logintitle =
823: '<h2 class="LC_hcell"'
824: .' style="background:'.$loginbox_header_bgcol.';'
825: .' color:'.$loginbox_header_textcol.'">'
826: .$lt{'log'}
827: .'</h2>';
828:
829: my $noscript_warning='<noscript><span class="LC_warning"><b>'
830: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
831: .'</b></span></noscript>';
832: my $helpdeskscript;
833: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
834: $authdomain,\$helpdeskscript,
835: $showhelpdesk,\@possdoms);
836:
837: my $mobileargs;
838: if ($clientmobile) {
839: $mobileargs = 'autocapitalize="off" autocorrect="off"';
840: }
841: my $loginform=(<<LFORM);
842: <form name="client" action="" onsubmit="return(send())" id="lclogin">
843: <input type="hidden" name="lextkey" value="$lextkey" />
844: <input type="hidden" name="uextkey" value="$uextkey" />
845: <b><label for="uname">$lt{'un'}</label>:</b><br />
846: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
847: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
848: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
849: <b><label for="udom">$lt{'dom'}</label>:</b><br />
850: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
851: <input type="submit" value="$lt{'log'}" />
852: </form>
853: LFORM
854:
855: if ($showbanner) {
856: my $alttext = &Apache::loncommon::designparm('login.alttext_img',$domain);
857: if ($alttext eq '') {
858: $alttext = 'The Learning Online Network with CAPA';
859: }
860: $r->print(<<HEADER);
861: <!-- The LON-CAPA Header -->
862: <div style="background:$pgbg;margin:0;width:100%;">
863: <img src="$img" border="0" alt="$alttext" class="LC_maxwidth" id="lcloginbanner" />
864: </div>
865: HEADER
866: }
867:
868: my $stdauthformstyle = 'inline-block';
869: my $ssoauthstyle = 'none';
870: my $logintype;
871: $r->print('<div style="float:left;margin-top:0;">');
872: if ($saml_landing) {
873: $ssoauthstyle = 'inline-block';
874: $stdauthformstyle = 'none';
875: $logintype = $samlssotext;
876: my $ssologin = '/adm/sso';
877: if ($samlssourl ne '') {
878: $ssologin = $samlssourl;
879: }
880: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
881: my $querystring;
882: if ($env{'form.firsturl'} ne '') {
883: $querystring = 'origurl=';
884: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
885: $querystring .= &uri_escape_utf8($env{'form.firsturl'});
886: } else {
887: $querystring .= &uri_escape($env{'form.firsturl'});
888: }
889: $querystring = &HTML::Entities::encode($querystring,"'");
890: }
891: if ($env{'form.ltoken'} ne '') {
892: $querystring .= (($querystring eq '')?'':'&') . 'ltoken='.
893: &HTML::Entities::encode(&uri_escape($env{'form.ltoken'}));
894: } elsif ($env{'form.linkkey'}) {
895: $querystring .= (($querystring eq '')?'':'&') . 'linkkey='.
896: &HTML::Entities::encode(&uri_escape($env{'form.linkkey'}));
897: }
898: if ($querystring ne '') {
899: $ssologin .= (($ssologin=~/\?/)?'&':'?') . $querystring;
900: }
901: } elsif ($logtoken ne '') {
902: $ssologin .= (($ssologin=~/\?/)?'&':'?') . 'logtoken='.$logtoken;
903: }
904: my $ssohref;
905: if ($samlssoimg ne '') {
906: $ssohref = '<a href="'.$ssologin.'" title="'.$samltooltip.'">'.
907: '<img src="'.$samlssoimg.'" alt="'.$samlssoalt.'" id="lcssobutton" /></a>';
908: } else {
909: $ssohref = '<a href="'.$ssologin.'">'.$samlssotext.'</a>';
910: }
911: if (($env{'form.saml'} eq 'no') ||
912: (($env{'form.username'} ne '') && ($env{'form.domain'} ne ''))) {
913: $ssoauthstyle = 'none';
914: $stdauthformstyle = 'inline-block';
915: $logintype = $samlnonsso;
916: }
917: $r->print(<<ENDSAML);
918: <p>
919: Log-in type:
920: <span style="font-weight:bold" id="LC_login_text">$logintype</span><br />
921: <span><a href="javascript:toggleLClogin();" style="color:#000000">$lt{'change'}</a></span>
922: </p>
923: <div style="display:$ssoauthstyle" id="LC_SSO_login">
924: <div class="LC_Box" style="padding-top: 10px;">
925: $ssohref
926: $noscript_warning
927: </div>
928: <div class="LC_Box" style="padding-top: 10px;">
929: $loginhelp
930: $contactblock
931: $coursecatalog
932: </div>
933: </div>
934: ENDSAML
935: } else {
936: if ($env{'form.ltoken'}) {
937: &Apache::lonnet::tmpdel($env{'form.ltoken'});
938: delete($env{'form.ltoken'});
939: }
940: }
941: my $in_frame_js;
942: if ($linkprot_for_login) {
943: my ($linkprotector,$linkproturi) = split(/:/,$linkprot_for_login,2);
944: if (($linkprotector =~ /^\d+(c|d)$/) && ($linkproturi =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$})) {
945: my $set_target;
946: if (($env{'form.retry'}) || ($env{'form.sso'})) {
947: if ($linkproturi eq $env{'form.firsturl'}) {
948: $set_target = " document.server.target = '_self';";
949: }
950: } else {
951: $set_target = <<ENDTARG;
952: var linkproturi = '$linkproturi';
953: var path = document.location.pathname.replace( new RegExp('^/adm/launch'),'');
954: if (linkproturi == path) {
955: document.server.target = '_self';
956: }
957: ENDTARG
958: }
959: $in_frame_js = <<ENDJS;
960: <script type="text/javascript">
961: // <![CDATA[
962: if ((window.self !== window.top) && (document.server.target != '_self')) {
963: $set_target
964: }
965: // ]]>
966: </script>
967: ENDJS
968: }
969: }
970:
971: $r->print(<<ENDLOGIN);
972: <div style="display:$stdauthformstyle;" id="LC_standard_login">
973: <div class="LC_Box" style="background:$loginbox_bg;">
974: $logintitle
975: $loginform
976: $noscript_warning
977: </div>
978:
979: <div class="LC_Box" style="padding-top: 10px;">
980: $loginhelp
981: $forgotpw
982: $contactblock
983: $newuserlink
984: $coursecatalog
985: </div>
986: </div>
987:
988: ENDLOGIN
989: $r->print('</div><div>'."\n");
990: if ($showmainlogo) {
991: my $alttext = &Apache::loncommon::designparm('login.alttext_logo',$domain);
992: $r->print(' <img src="'.$logo.'" alt="'.$alttext.'" class="LC_maxwidth" id="lcloginmainlogo" />'."\n");
993: }
994: $r->print(<<ENDTOP);
995: $announcements
996: </div>
997: <hr style="clear:both;" />
998: ENDTOP
999: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
1000: $domainrow = <<"END";
1001: <tr>
1002: <td align="left" valign="top">
1003: <small><b>$lt{'dom'}: </b></small>
1004: </td>
1005: <td align="left" valign="top">
1006: <small><tt> $domain</tt></small>
1007: </td>
1008: </tr>
1009: END
1010: $serverrow = <<"END";
1011: <tr>
1012: <td align="left" valign="top">
1013: <small><b>$lt{'serv'}: </b></small>
1014: </td>
1015: <td align="left" valign="top">
1016: <small><tt> $lonhost ($role)</tt></small>
1017: </td>
1018: </tr>
1019: END
1020: if ($loadlim) {
1021: $loadrow = <<"END";
1022: <tr>
1023: <td align="left" valign="top">
1024: <small><b>$lt{'load'}: </b></small>
1025: </td>
1026: <td align="left" valign="top">
1027: <small><tt> $loadpercent $lt{'perc'}</tt></small>
1028: </td>
1029: </tr>
1030: END
1031: }
1032: if ($uloadlim) {
1033: $userloadrow = <<"END";
1034: <tr>
1035: <td align="left" valign="top">
1036: <small><b>$lt{'userload'}: </b></small>
1037: </td>
1038: <td align="left" valign="top">
1039: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
1040: </td>
1041: </tr>
1042: END
1043: }
1044: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
1045: $versionrow = <<"END";
1046: <tr>
1047: <td colspan="2" align="left">
1048: <small>$version</small>
1049: </td>
1050: </tr>
1051: END
1052: }
1053:
1054: $r->print(<<ENDDOCUMENT);
1055: <div style="float: left;">
1056: <table border="0" cellspacing="0" cellpadding="0">
1057: $domainrow
1058: $serverrow
1059: $loadrow
1060: $userloadrow
1061: $versionrow
1062: </table>
1063: </div>
1064: <div style="float: right;">
1065: $domainlogo
1066: </div>
1067: <br style="clear:both;" />
1068: </div>
1069:
1070: $in_frame_js
1071: <script type="text/javascript">
1072: // <![CDATA[
1073: // the if prevents the script error if the browser can not handle this
1074: if ( document.client.uname ) { document.client.uname.focus(); }
1075: // ]]>
1076: </script>
1077: $helpdeskscript
1078:
1079: ENDDOCUMENT
1080: my %endargs = ( 'noredirectlink' => 1, );
1081: $r->print(&Apache::loncommon::end_page(\%endargs));
1082: return OK;
1083: }
1084:
1085: sub check_loginvia {
1086: my ($domain,$lonhost,$lonidsdir,$balcookie) = @_;
1087: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
1088: return;
1089: }
1090: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
1091: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
1092: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
1093: my $output;
1094: if ($loginvia ne '') {
1095: my $noredirect;
1096: my $ip = &Apache::lonnet::get_requestor_ip();
1097: if ($ip eq '127.0.0.1') {
1098: $noredirect = 1;
1099: } else {
1100: if ($loginvia_exempt ne '') {
1101: my @exempt = split(',',$loginvia_exempt);
1102: if (grep(/^\Q$ip\E$/,@exempt)) {
1103: $noredirect = 1;
1104: }
1105: }
1106: }
1107: unless ($noredirect) {
1108: my ($newhost,$path);
1109: if ($loginvia =~ /:/) {
1110: ($newhost,$path) = split(':',$loginvia);
1111: } else {
1112: $newhost = $loginvia;
1113: }
1114: if ($newhost ne $lonhost) {
1115: if (&Apache::lonnet::hostname($newhost) ne '') {
1116: if ($balcookie) {
1117: my ($balancer,$cookie) = split(/:/,$balcookie);
1118: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
1119: my ($udom,$uname,$cookieid) = ($1,$2,$3);
1120: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
1121: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
1122: while (my $filename=readdir($dh)) {
1123: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
1124: my $handle = $1;
1125: my %hash =
1126: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
1127: ['request.balancercookie',
1128: 'user.linkedenv']);
1129: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
1130: if (unlink("$lonidsdir/$filename")) {
1131: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
1132: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
1133: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
1134: unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
1135: }
1136: }
1137: }
1138: last;
1139: }
1140: }
1141: closedir($dh);
1142: }
1143: }
1144: }
1145: }
1146: $output = &redirect_page($newhost,$path);
1147: }
1148: }
1149: }
1150: }
1151: return $output;
1152: }
1153:
1154: sub redirect_page {
1155: my ($desthost,$path) = @_;
1156: my $hostname = &Apache::lonnet::hostname($desthost);
1157: my $protocol = $Apache::lonnet::protocol{$desthost};
1158: $protocol = 'http' if ($protocol ne 'https');
1159: unless ($path =~ m{^/}) {
1160: $path = '/'.$path;
1161: }
1162: my $url = $protocol.'://'.$hostname.$path;
1163: my $args = {};
1164: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
1165: $url = $protocol.'://'.$hostname.$env{'form.firsturl'};
1166: if (($env{'form.ltoken'}) || ($env{'form.linkprot'} ne '') ||
1167: ($env{'form.linkkey'} ne '')) {
1168: my %link_info;
1169: if ($env{'form.ltoken'}) {
1170: %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
1171: &Apache::lonnet::tmpdel($env{'form.ltoken'});
1172: $args->{'only_body'} = 1;
1173: } elsif ($env{'form.linkprot'}) {
1174: $link_info{'linkprot'} = $env{'form.linkprot'};
1175: foreach my $item ('linkprotuser','linkprotexit') {
1176: if ($env{'form.'.$item}) {
1177: $link_info{$item} = $env{'form.'.$item};
1178: }
1179: }
1180: $args->{'only_body'} = 1;
1181: } elsif ($env{'form.linkkey'} ne '') {
1182: $link_info{'linkkey'} = $env{'form.linkkey'};
1183: }
1184: my $token = &Apache::lonnet::tmpput(\%link_info,$desthost,'link');
1185: unless (($token eq 'con_lost') || ($token eq 'refused') ||
1186: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
1187: $url .= '?ltoken='.$token;
1188: }
1189: }
1190: } else {
1191: my $querystring;
1192: if ($env{'form.firsturl'} ne '') {
1193: if ($env{'form.firsturl'} =~ /[^\x00-\xFF]/) {
1194: $querystring = &uri_escape_utf8($env{'form.firsturl'});
1195: } else {
1196: $querystring = &uri_escape($env{'form.firsturl'});
1197: }
1198: $querystring = &HTML::Entities::encode($querystring,"'");
1199: $querystring = '?firsturl='.$querystring;
1200: }
1201: if ($env{'form.ltoken'}) {
1202: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
1203: &Apache::lonnet::tmpdel($env{'form.ltoken'});
1204: my $token = &Apache::lonnet::tmpput(\%link_info,$desthost,'link');
1205: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
1206: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
1207: unless (($path eq '/adm/roles') || ($path eq '/adm/login')) {
1208: $url = $protocol.'://'.$hostname.'/adm/roles';
1209: }
1210: $querystring .= (($querystring =~/^\?/)?'&':'?') . 'ttoken='.$token;
1211: }
1212: }
1213: $url .= $querystring;
1214: }
1215: $args->{'redirect'} = [0,$url];
1216: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,$args);
1217: my $end_page = &Apache::loncommon::end_page();
1218: return $start_page.$end_page;
1219: }
1220:
1221: sub contactdisplay {
1222: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
1223: $possdoms) = @_;
1224: my $contactblock;
1225: my $origmail;
1226: if (ref($possdoms) eq 'ARRAY') {
1227: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
1228: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
1229: }
1230: }
1231: my $requestmail =
1232: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
1233: $authdomain,$origmail);
1234: unless ($showhelpdesk eq '0') {
1235: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
1236: $showhelpdesk = 1;
1237: } else {
1238: $showhelpdesk = 0;
1239: }
1240: }
1241: if ($servadm && $showadminmail) {
1242: $contactblock .= $$lt{'servadm'}.':<br />'.
1243: '<tt>'.$servadm.'</tt><br />';
1244: }
1245: if ($showhelpdesk) {
1246: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
1247: my $thisurl = &escape('/adm/login');
1248: $$helpdeskscript = <<"ENDSCRIPT";
1249: <script type="text/javascript">
1250: // <![CDATA[
1251: function helpdesk() {
1252: var possdom = document.client.udom.value;
1253: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
1254: if (codedom == '') {
1255: codedom = "$authdomain";
1256: }
1257: var querystr = "origurl=$thisurl&codedom="+codedom;
1258: document.location.href = "/adm/helpdesk?"+querystr;
1259: return;
1260: }
1261: // ]]>
1262: </script>
1263: ENDSCRIPT
1264: }
1265: return $contactblock;
1266: }
1267:
1268: sub forgotpwdisplay {
1269: my (%lt) = @_;
1270: my $prompt_for_resetpw = 1;
1271: if ($prompt_for_resetpw) {
1272: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
1273: }
1274: return;
1275: }
1276:
1277: sub coursecatalog_link {
1278: my ($linkname) = @_;
1279: return <<"END";
1280: <a href="/adm/coursecatalog">$linkname</a>
1281: END
1282: }
1283:
1284: sub newuser_link {
1285: my ($linkname) = @_;
1286: return '<a href="/adm/createaccount">'.$linkname.'</a>';
1287: }
1288:
1289: sub decode_token {
1290: my ($info) = @_;
1291: my ($firsturl,@rest)=split(/\&/,$info);
1292: my %form;
1293: if ($firsturl ne '') {
1294: $form{'firsturl'} = &unescape($firsturl);
1295: }
1296: foreach my $item (@rest) {
1297: my ($key,$value) = split(/=/,$item);
1298: $form{$key} = &unescape($value);
1299: }
1300: return %form;
1301: }
1302:
1303: 1;
1304: __END__
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