1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.158.2.9.2.2 2020/10/26 02:06:16 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::lonlogin;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::File ();
34: use Apache::lonnet;
35: use Apache::loncommon();
36: use Apache::lonauth();
37: use Apache::lonlocal;
38: use Apache::migrateuser();
39: use lib '/home/httpd/lib/perl/';
40: use LONCAPA qw(:DEFAULT :match);
41: use CGI::Cookie();
42:
43: sub handler {
44: my $r = shift;
45:
46: &Apache::loncommon::get_unprocessed_cgi
47: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
48: $ENV{'REDIRECT_QUERY_STRING'}),
49: ['interface','username','domain','firsturl','localpath','localres',
50: 'token','role','symb','iptoken','btoken']);
51: if (!defined($env{'form.firsturl'})) {
52: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
53: }
54: if (!defined($env{'form.firsturl'})) {
55: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) {
56: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'};
57: }
58: }
59:
60: # -- check if they are a migrating user
61: if (defined($env{'form.token'})) {
62: return &Apache::migrateuser::handler($r);
63: }
64:
65: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
66: my ($handle,$lonidsdir,$expirepub,$userdom);
67: $lonidsdir=$r->dir_config('lonIDsDir');
68: unless ($r->header_only) {
69: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
70: if ($handle ne '') {
71: if ($handle=~/^publicuser\_/) {
72: unlink($r->dir_config('lonIDsDir')."/$handle.id");
73: undef($handle);
74: undef($userdom);
75: $expirepub = 1;
76: }
77: }
78: }
79:
80: &Apache::loncommon::no_cache($r);
81: &Apache::lonlocal::get_language_handle($r);
82: &Apache::loncommon::content_type($r,'text/html');
83: if ($expirepub) {
84: my $c = new CGI::Cookie(-name => 'lonPubID',
85: -value => '',
86: -expires => '-10y',);
87: $r->header_out('Set-cookie' => $c);
88: } elsif (($handle eq '') && ($userdom ne '')) {
89: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
90: foreach my $name (keys(%cookies)) {
91: next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
92: my $c = new CGI::Cookie(-name => $name,
93: -value => '',
94: -expires => '-10y',);
95: $r->headers_out->add('Set-cookie' => $c);
96: }
97: }
98: $r->send_http_header;
99: return OK if $r->header_only;
100:
101:
102: # Are we re-routing?
103: my $londocroot = $r->dir_config('lonDocRoot');
104: if (-e "$londocroot/lon-status/reroute.txt") {
105: &Apache::lonauth::reroute($r);
106: return OK;
107: }
108:
109: my $lonhost = $r->dir_config('lonHostID');
110: $env{'form.firsturl'} =~ s/(`)/'/g;
111:
112: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
113:
114: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
115: if ($found_server) {
116: my $hostname = &Apache::lonnet::hostname($found_server);
117: if ($hostname ne '') {
118: my $protocol = $Apache::lonnet::protocol{$found_server};
119: $protocol = 'http' if ($protocol ne 'https');
120: my $dest = '/adm/roles';
121: if ($env{'form.firsturl'} ne '') {
122: $dest = $env{'form.firsturl'};
123: }
124: my %info = (
125: balcookie => $lonhost.':'.$balancer_cookie,
126: );
127: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server);
128: if ($balancer_token) {
129: $dest .= (($dest=~/\?/)?'&;':'?') . 'btoken='.$balancer_token;
130: }
131: my $url = $protocol.'://'.$hostname.$dest;
132: my $start_page =
133: &Apache::loncommon::start_page('Switching Server ...',undef,
134: {'redirect' => [0,$url],});
135: my $end_page = &Apache::loncommon::end_page();
136: $r->print($start_page.$end_page);
137: return OK;
138: }
139: }
140:
141: #
142: # Check if a LON-CAPA load balancer sent user here because user's browser sent
143: # it a balancer cookie for an active session on this server.
144: #
145:
146: my $balcookie;
147: if ($env{'form.btoken'}) {
148: my %info = &Apache::lonnet::tmpget($env{'form.btoken'});
149: $balcookie = $info{'balcookie'};
150: &Apache::lonnet::tmpdel($env{'form.btoken'});
151: delete($env{'form.btoken'});
152: }
153:
154: #
155: # If browser sent an old cookie for which the session file had been removed
156: # check if configuration for user's domain has a portal URL set. If so
157: # switch user's log-in to the portal.
158: #
159:
160: if (($handle eq '') && ($userdom ne '')) {
161: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
162: if ($domdefaults{'portal_def'} =~ /^https?\:/) {
163: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
164: {'redirect' => [0,$domdefaults{'portal_def'}],});
165: my $end_page = &Apache::loncommon::end_page();
166: $r->print($start_page.$end_page);
167: return OK;
168: }
169: }
170:
171: $env{'form.firsturl'} =~ s/(`)/'/g;
172:
173: # -------------------------------- Prevent users from attempting to login twice
174: if ($handle ne '') {
175: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
176: my $start_page =
177: &Apache::loncommon::start_page('Already logged in');
178: my $end_page =
179: &Apache::loncommon::end_page();
180: my $dest = '/adm/roles';
181: if ($env{'form.firsturl'} ne '') {
182: $dest = $env{'form.firsturl'};
183: }
184: $r->print(
185: $start_page
186: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
187: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
188: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
189: .$end_page
190: );
191: return OK;
192: }
193:
194: # ---------------------------------------------------- No valid token, continue
195:
196: # ---------------------------- Not possible to really login to domain "public"
197: if ($env{'form.domain'} eq 'public') {
198: $env{'form.domain'}='';
199: $env{'form.username'}='';
200: }
201:
202: # ------ Is this page requested because /adm/migrateuser detected an IP change?
203: my %sessiondata;
204: if ($env{'form.iptoken'}) {
205: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
206: unless ($sessiondata{'sessionserver'}) {
207: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
208: delete($env{'form.iptoken'});
209: }
210: }
211: # ----------------------------------------------------------- Process Interface
212: $env{'form.interface'}=~s/\W//g;
213:
214: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
215: &Apache::loncommon::decode_user_agent();
216:
217: my $iconpath=
218: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
219:
220: my $domain = &Apache::lonnet::default_login_domain();
221: my $defdom = $domain;
222: if ($lonhost ne '') {
223: unless ($sessiondata{'sessionserver'}) {
224: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie);
225: if ($redirect) {
226: $r->print($redirect);
227: return OK;
228: }
229: }
230: }
231:
232: if (($sessiondata{'domain'}) &&
233: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) {
234: $domain=$sessiondata{'domain'};
235: } elsif (($env{'form.domain'}) &&
236: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
237: $domain=$env{'form.domain'};
238: }
239:
240: my $role = $r->dir_config('lonRole');
241: my $loadlim = $r->dir_config('lonLoadLim');
242: my $uloadlim= $r->dir_config('lonUserLoadLim');
243: my $servadm = $r->dir_config('lonAdmEMail');
244: my $tabdir = $r->dir_config('lonTabDir');
245: my $include = $r->dir_config('lonIncludes');
246: my $expire = $r->dir_config('lonExpire');
247: my $version = $r->dir_config('lonVersion');
248: my $host_name = &Apache::lonnet::hostname($lonhost);
249:
250: # --------------------------------------------- Default values for login fields
251:
252: my ($authusername,$authdomain);
253: if ($sessiondata{'username'}) {
254: $authusername=$sessiondata{'username'};
255: } else {
256: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
257: $authusername=($env{'form.username'}?$env{'form.username'}:'');
258: }
259: if ($sessiondata{'domain'}) {
260: $authdomain=$sessiondata{'domain'};
261: } else {
262: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
263: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
264: }
265:
266: # ---------------------------------------------------------- Determine own load
267: my $loadavg;
268: {
269: my $loadfile=Apache::File->new('/proc/loadavg');
270: $loadavg=<$loadfile>;
271: }
272: $loadavg =~ s/\s.*//g;
273:
274: my ($loadpercent,$userloadpercent);
275: if ($loadlim) {
276: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
277: }
278: if ($uloadlim) {
279: $userloadpercent=&Apache::lonnet::userload();
280: }
281:
282: my $firsturl=
283: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
284:
285: # ----------------------------------------------------------- Get announcements
286: my $announcements=&Apache::lonnet::getannounce();
287: # -------------------------------------------------------- Set login parameters
288:
289: my @hexstr=('0','1','2','3','4','5','6','7',
290: '8','9','a','b','c','d','e','f');
291: my $lkey='';
292: for (0..7) {
293: $lkey.=$hexstr[rand(15)];
294: }
295:
296: my $ukey='';
297: for (0..7) {
298: $ukey.=$hexstr[rand(15)];
299: }
300:
301: my $lextkey=hex($lkey);
302: if ($lextkey>2147483647) { $lextkey-=4294967296; }
303:
304: my $uextkey=hex($ukey);
305: if ($uextkey>2147483647) { $uextkey-=4294967296; }
306:
307: # -------------------------------------------------------- Store away log token
308: my $tokenextras;
309: if ($env{'form.role'}) {
310: $tokenextras = '&role='.&escape($env{'form.role'});
311: }
312: if ($env{'form.symb'}) {
313: if (!$tokenextras) {
314: $tokenextras = '&';
315: }
316: $tokenextras .= '&symb='.&escape($env{'form.symb'});
317: }
318: if ($env{'form.iptoken'}) {
319: if (!$tokenextras) {
320: $tokenextras = '&&';
321: }
322: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
323: }
324: my $logtoken=Apache::lonnet::reply(
325: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
326: $lonhost);
327:
328: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
329: # we are in serious trouble
330:
331: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
332: if ($logtoken eq 'no_such_host') {
333: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
334: }
335: my $spares='';
336: my (@sparehosts,%spareservers);
337: my $sparesref = &Apache::lonnet::this_host_spares($defdom);
338: if (ref($sparesref) eq 'HASH') {
339: foreach my $key (keys(%{$sparesref})) {
340: if (ref($sparesref->{$key}) eq 'ARRAY') {
341: my @sorted = sort { &Apache::lonnet::hostname($a) cmp
342: &Apache::lonnet::hostname($b);
343: } @{$sparesref->{$key}};
344: if (@sorted) {
345: if ($key eq 'primary') {
346: unshift(@sparehosts,@sorted);
347: } elsif ($key eq 'default') {
348: push(@sparehosts,@sorted);
349: }
350: }
351: }
352: }
353: }
354: foreach my $hostid (@sparehosts) {
355: next if ($hostid eq $lonhost);
356: my $hostname = &Apache::lonnet::hostname($hostid);
357: next if (($hostname eq '') || ($spareservers{$hostname}));
358: $spareservers{$hostname} = 1;
359: my $protocol = $Apache::lonnet::protocol{$hostid};
360: $protocol = 'http' if ($protocol ne 'https');
361: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'.
362: $hostname.
363: '/adm/login?domain='.$authdomain.'">'.
364: $hostname.'</a>'.
365: ' '.&mt('(preferred)').'</span>'.$/;
366: }
367: if ($spares) {
368: $spares.= '<br />';
369: }
370: my %all_hostnames = &Apache::lonnet::all_hostnames();
371: foreach my $hostid (sort
372: {
373: &Apache::lonnet::hostname($a) cmp
374: &Apache::lonnet::hostname($b);
375: }
376: keys(%all_hostnames)) {
377: next if ($hostid eq $lonhost);
378: my $hostname = &Apache::lonnet::hostname($hostid);
379: next if (($hostname eq '') || ($spareservers{$hostname}));
380: $spareservers{$hostname} = 1;
381: my $protocol = $Apache::lonnet::protocol{$hostid};
382: $protocol = 'http' if ($protocol ne 'https');
383: $spares.='<br /><a href="'.$protocol.'://'.
384: $hostname.
385: '/adm/login?domain='.$authdomain.'">'.
386: $hostname.'</a>';
387: }
388: $r->print(
389: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
390: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
391: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>'
392: .&mt('The LearningOnline Network with CAPA')
393: .'</title></head>'
394: .'<body bgcolor="#FFFFFF">'
395: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
396: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />'
397: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
398: if ($spares) {
399: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
400: .'</p>'
401: .$spares);
402: }
403: $r->print('</body>'
404: .'</html>'
405: );
406: return OK;
407: }
408:
409: # ----------------------------------------------- Apparently we are in business
410: $servadm=~s/\,/\<br \/\>/g;
411:
412: # ----------------------------------------------------------- Front page design
413: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
414: my $font=&Apache::loncommon::designparm('login.font',$domain);
415: my $link=&Apache::loncommon::designparm('login.link',$domain);
416: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
417: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
418: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
419: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
420: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
421: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
422: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
423: my $img=&Apache::loncommon::designparm('login.img',$domain);
424: my $domainlogo=&Apache::loncommon::domainlogo($domain);
425: my $showbanner = 1;
426: my $showmainlogo = 1;
427: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
428: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
429: }
430: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
431: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
432: }
433: my $showadminmail;
434: my @possdoms = &Apache::lonnet::current_machine_domains();
435: if (grep(/^\Q$domain\E$/,@possdoms)) {
436: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
437: }
438: my $showcoursecat =
439: &Apache::loncommon::designparm('login.coursecatalog',$domain);
440: my $shownewuserlink =
441: &Apache::loncommon::designparm('login.newuser',$domain);
442: my $showhelpdesk =
443: &Apache::loncommon::designparm('login.helpdesk',$domain);
444: my $now=time;
445: my $js = (<<ENDSCRIPT);
446:
447: <script type="text/javascript" language="JavaScript">
448: // <![CDATA[
449: function send()
450: {
451: this.document.server.elements.uname.value
452: =this.document.client.elements.uname.value;
453:
454: this.document.server.elements.udom.value
455: =this.document.client.elements.udom.value;
456:
457: uextkey=this.document.client.elements.uextkey.value;
458: lextkey=this.document.client.elements.lextkey.value;
459: initkeys();
460:
461: this.document.server.elements.upass0.value
462: =getCrypted(this.document.client.elements.upass$now.value);
463:
464: this.document.client.elements.uname.value='';
465: this.document.client.elements.upass$now.value='';
466:
467: this.document.server.submit();
468: return false;
469: }
470:
471: function enableInput() {
472: this.document.client.elements.upass$now.removeAttribute("readOnly");
473: this.document.client.elements.uname.removeAttribute("readOnly");
474: this.document.client.elements.udom.removeAttribute("readOnly");
475: return;
476: }
477:
478: // ]]>
479: </script>
480:
481: ENDSCRIPT
482:
483: # --------------------------------------------------- Print login screen header
484:
485: my %add_entries = (
486: bgcolor => "$mainbg",
487: text => "$font",
488: link => "$link",
489: vlink => "$vlink",
490: alink => "$alink",
491: onload => 'javascript:enableInput();',);
492:
493: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
494: @hosts = &Apache::lonnet::current_machine_ids();
495: $lonhost_in_use = $lonhost;
496: if (@hosts > 1) {
497: foreach my $hostid (@hosts) {
498: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
499: $lonhost_in_use = $hostid;
500: last;
501: }
502: }
503: }
504: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
505: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
506: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
507: if ($headextra) {
508: my $omitextra;
509: if ($headextra_exempt ne '') {
510: my @exempt = split(',',$headextra_exempt);
511: my $ip = $ENV{'REMOTE_ADDR'};
512: if (grep(/^\Q$ip\E$/,@exempt)) {
513: $omitextra = 1;
514: }
515: }
516: unless ($omitextra) {
517: my $confname = $defdom.'-domainconfig';
518: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
519: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
520: unless ($extra eq '-1') {
521: $js .= "\n".$extra."\n";
522: }
523: }
524: }
525: }
526:
527: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
528: { 'redirect' => [$expire,'/adm/roles'],
529: 'add_entries' => \%add_entries,
530: 'only_body' => 1,}));
531:
532: # ----------------------------------------------------------------------- Texts
533:
534: my %lt=&Apache::lonlocal::texthash(
535: 'un' => 'Username',
536: 'pw' => 'Password',
537: 'dom' => 'Domain',
538: 'perc' => 'percent',
539: 'load' => 'Server Load',
540: 'userload' => 'User Load',
541: 'catalog' => 'Course/Community Catalog',
542: 'log' => 'Log in',
543: 'help' => 'Log-in Help',
544: 'serv' => 'Server',
545: 'servadm' => 'Server Administration',
546: 'helpdesk' => 'Contact Helpdesk',
547: 'forgotpw' => 'Forgot password?',
548: 'newuser' => 'New User?',
549: );
550: # -------------------------------------------------- Change password field name
551:
552: my $forgotpw = &forgotpwdisplay(%lt);
553: $forgotpw .= '<br />' if $forgotpw;
554: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
555: if ($loginhelp) {
556: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
557: }
558:
559: # ---------------------------------------------------- Serve out DES JavaScript
560: {
561: my $jsh=Apache::File->new($include."/londes.js");
562: $r->print(<$jsh>);
563: }
564: # ---------------------------------------------------------- Serve rest of page
565:
566: $r->print(
567: '<div class="LC_Box"'
568: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
569: );
570:
571: $r->print(<<ENDSERVERFORM);
572: <form name="server" action="/adm/authenticate" method="post" target="_top">
573: <input type="hidden" name="logtoken" value="$logtoken" />
574: <input type="hidden" name="serverid" value="$lonhost" />
575: <input type="hidden" name="uname" value="" />
576: <input type="hidden" name="upass0" value="" />
577: <input type="hidden" name="udom" value="" />
578: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
579: <input type="hidden" name="localres" value="$env{'form.localres'}" />
580: </form>
581: ENDSERVERFORM
582: my $coursecatalog;
583: if (($showcoursecat eq '') || ($showcoursecat)) {
584: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
585: }
586: my $newuserlink;
587: if ($shownewuserlink) {
588: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
589: }
590: my $logintitle =
591: '<h2 class="LC_hcell"'
592: .' style="background:'.$loginbox_header_bgcol.';'
593: .' color:'.$loginbox_header_textcol.'">'
594: .$lt{'log'}
595: .'</h2>';
596:
597: my $noscript_warning='<noscript><span class="LC_warning"><b>'
598: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
599: .'</b></span></noscript>';
600: my $helpdeskscript;
601: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
602: $authdomain,\$helpdeskscript,
603: $showhelpdesk,\@possdoms);
604:
605: my $mobileargs;
606: if ($clientmobile) {
607: $mobileargs = 'autocapitalize="off" autocorrect="off"';
608: }
609: my $loginform=(<<LFORM);
610: <form name="client" action="" onsubmit="return(send())">
611: <input type="hidden" name="lextkey" value="$lextkey" />
612: <input type="hidden" name="uextkey" value="$uextkey" />
613: <b><label for="uname">$lt{'un'}</label>:</b><br />
614: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
615: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
616: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
617: <b><label for="udom">$lt{'dom'}</label>:</b><br />
618: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
619: <input type="submit" value="$lt{'log'}" />
620: </form>
621: LFORM
622:
623: if ($showbanner) {
624: $r->print(<<HEADER);
625: <!-- The LON-CAPA Header -->
626: <div style="background:$pgbg;margin:0;width:100%;">
627: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
628: </div>
629: HEADER
630: }
631: $r->print(<<ENDTOP);
632: <div style="float:left;margin-top:0;">
633: <div class="LC_Box" style="background:$loginbox_bg;">
634: $logintitle
635: $loginform
636: $noscript_warning
637: </div>
638:
639: <div class="LC_Box" style="padding-top: 10px;">
640: $loginhelp
641: $forgotpw
642: $contactblock
643: $newuserlink
644: $coursecatalog
645: </div>
646: </div>
647:
648: <div>
649: ENDTOP
650: if ($showmainlogo) {
651: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
652: }
653: $r->print(<<ENDTOP);
654: $announcements
655: </div>
656: <hr style="clear:both;" />
657: ENDTOP
658: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
659: $domainrow = <<"END";
660: <tr>
661: <td align="left" valign="top">
662: <small><b>$lt{'dom'}: </b></small>
663: </td>
664: <td align="left" valign="top">
665: <small><tt> $domain</tt></small>
666: </td>
667: </tr>
668: END
669: $serverrow = <<"END";
670: <tr>
671: <td align="left" valign="top">
672: <small><b>$lt{'serv'}: </b></small>
673: </td>
674: <td align="left" valign="top">
675: <small><tt> $lonhost ($role)</tt></small>
676: </td>
677: </tr>
678: END
679: if ($loadlim) {
680: $loadrow = <<"END";
681: <tr>
682: <td align="left" valign="top">
683: <small><b>$lt{'load'}: </b></small>
684: </td>
685: <td align="left" valign="top">
686: <small><tt> $loadpercent $lt{'perc'}</tt></small>
687: </td>
688: </tr>
689: END
690: }
691: if ($uloadlim) {
692: $userloadrow = <<"END";
693: <tr>
694: <td align="left" valign="top">
695: <small><b>$lt{'userload'}: </b></small>
696: </td>
697: <td align="left" valign="top">
698: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
699: </td>
700: </tr>
701: END
702: }
703: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
704: $versionrow = <<"END";
705: <tr>
706: <td colspan="2" align="left">
707: <small>$version</small>
708: </td>
709: </tr>
710: END
711: }
712:
713: $r->print(<<ENDDOCUMENT);
714: <div style="float: left;">
715: <table border="0" cellspacing="0" cellpadding="0">
716: $domainrow
717: $serverrow
718: $loadrow
719: $userloadrow
720: $versionrow
721: </table>
722: </div>
723: <div style="float: right;">
724: $domainlogo
725: </div>
726: <br style="clear:both;" />
727: </div>
728:
729: <script type="text/javascript">
730: // <![CDATA[
731: // the if prevents the script error if the browser can not handle this
732: if ( document.client.uname ) { document.client.uname.focus(); }
733: // ]]>
734: </script>
735: $helpdeskscript
736:
737: ENDDOCUMENT
738: my %endargs = ( 'noredirectlink' => 1, );
739: $r->print(&Apache::loncommon::end_page(\%endargs));
740: return OK;
741: }
742:
743: sub check_loginvia {
744: my ($domain,$lonhost,$lonidsdir,$balcookie) = @_;
745: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
746: return;
747: }
748: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
749: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
750: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
751: my $output;
752: if ($loginvia ne '') {
753: my $noredirect;
754: my $ip = $ENV{'REMOTE_ADDR'};
755: if ($ip eq '127.0.0.1') {
756: $noredirect = 1;
757: } else {
758: if ($loginvia_exempt ne '') {
759: my @exempt = split(',',$loginvia_exempt);
760: if (grep(/^\Q$ip\E$/,@exempt)) {
761: $noredirect = 1;
762: }
763: }
764: }
765: unless ($noredirect) {
766: my ($newhost,$path);
767: if ($loginvia =~ /:/) {
768: ($newhost,$path) = split(':',$loginvia);
769: } else {
770: $newhost = $loginvia;
771: }
772: if ($newhost ne $lonhost) {
773: if (&Apache::lonnet::hostname($newhost) ne '') {
774: if ($balcookie) {
775: my ($balancer,$cookie) = split(/:/,$balcookie);
776: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
777: my ($udom,$uname,$cookieid) = ($1,$2,$3);
778: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
779: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
780: while (my $filename=readdir($dh)) {
781: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
782: my $handle = $1;
783: my %hash =
784: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
785: ['request.balancercookie',
786: 'user.linkedenv']);
787: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
788: if (unlink("$lonidsdir/$filename")) {
789: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
790: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
791: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
792: unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
793: }
794: }
795: }
796: last;
797: }
798: }
799: closedir($dh);
800: }
801: }
802: }
803: }
804: $output = &redirect_page($newhost,$path);
805: }
806: }
807: }
808: }
809: return $output;
810: }
811:
812: sub redirect_page {
813: my ($desthost,$path) = @_;
814: my $hostname = &Apache::lonnet::hostname($desthost);
815: my $protocol = $Apache::lonnet::protocol{$desthost};
816: $protocol = 'http' if ($protocol ne 'https');
817: unless ($path =~ m{^/}) {
818: $path = '/'.$path;
819: }
820: my $url = $protocol.'://'.$hostname.$path;
821: if ($env{'form.firsturl'} ne '') {
822: $url .='?firsturl='.$env{'form.firsturl'};
823: }
824: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
825: {'redirect' => [0,$url],});
826: my $end_page = &Apache::loncommon::end_page();
827: return $start_page.$end_page;
828: }
829:
830: sub contactdisplay {
831: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
832: $possdoms) = @_;
833: my $contactblock;
834: my $origmail;
835: if (ref($possdoms) eq 'ARRAY') {
836: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
837: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
838: }
839: }
840: my $requestmail =
841: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
842: $authdomain,$origmail);
843: unless ($showhelpdesk eq '0') {
844: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
845: $showhelpdesk = 1;
846: } else {
847: $showhelpdesk = 0;
848: }
849: }
850: if ($servadm && $showadminmail) {
851: $contactblock .= $$lt{'servadm'}.':<br />'.
852: '<tt>'.$servadm.'</tt><br />';
853: }
854: if ($showhelpdesk) {
855: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
856: my $thisurl = &escape('/adm/login');
857: $$helpdeskscript = <<"ENDSCRIPT";
858: <script type="text/javascript">
859: // <![CDATA[
860: function helpdesk() {
861: var possdom = document.client.udom.value;
862: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
863: if (codedom == '') {
864: codedom = "$authdomain";
865: }
866: var querystr = "origurl=$thisurl&codedom="+codedom;
867: document.location.href = "/adm/helpdesk?"+querystr;
868: return;
869: }
870: // ]]>
871: </script>
872: ENDSCRIPT
873: }
874: return $contactblock;
875: }
876:
877: sub forgotpwdisplay {
878: my (%lt) = @_;
879: my $prompt_for_resetpw = 1;
880: if ($prompt_for_resetpw) {
881: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
882: }
883: return;
884: }
885:
886: sub coursecatalog_link {
887: my ($linkname) = @_;
888: return <<"END";
889: <a href="/adm/coursecatalog">$linkname</a>
890: END
891: }
892:
893: sub newuser_link {
894: my ($linkname) = @_;
895: return '<a href="/adm/createaccount">'.$linkname.'</a>';
896: }
897:
898: 1;
899: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonlogin.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / auth