1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.176 2022/06/30 21:04:13 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::lonauth;
30:
31: use strict;
32: use LONCAPA qw(:DEFAULT :match);
33: use Apache::Constants qw(:common);
34: use CGI qw(:standard);
35: use Apache::loncommon();
36: use Apache::lonnet;
37: use Apache::lonmenu();
38: use Apache::createaccount;
39: use Apache::ltiauth;
40: use Fcntl qw(:flock);
41: use Apache::lonlocal;
42: use Apache::File();
43: use HTML::Entities;
44: use Digest::MD5;
45: use CGI::Cookie();
46:
47: # ------------------------------------------------------------ Successful login
48: sub success {
49: my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
50: $form,$skipcritical,$cid,$expirepub) = @_;
51:
52: # ------------------------------------------------------------ Get cookie ready
53: my $cookie =
54: &Apache::loncommon::init_user_environment($r, $username, $domain,
55: $authhost, $form,
56: {'extra_env' => $extra_env,});
57:
58: my $public=($username eq 'public' && $domain eq 'public');
59:
60: if ($public or $lowerurl eq 'noredirect') { return $cookie; }
61:
62: # -------------------------------------------------------------------- Log this
63:
64: my $ip = &Apache::lonnet::get_requestor_ip();
65: &Apache::lonnet::log($domain,$username,$authhost,
66: "Login $ip");
67:
68: # ------------------------------------------------- Check for critical messages
69:
70: unless ($skipcritical) {
71: my @what=&Apache::lonnet::dump('critical',$domain,$username);
72: if ($what[0]) {
73: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
74: $lowerurl='/adm/email?critical=display';
75: }
76: }
77: }
78:
79: # ----------------------------------------------------------- Get cookies ready
80: my ($securecookie,$defaultcookie);
81: my $ssl = $r->subprocess_env('https');
82: if ($ssl) {
83: $securecookie="lonSID=$cookie; path=/; HttpOnly; secure";
84: my $lonidsdir=$r->dir_config('lonIDsDir');
85: if (($lonidsdir) && (-e "$lonidsdir/$cookie.id")) {
86: my $linkname=substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 32).'_linked';
87: if (-e "$lonidsdir/$linkname.id") {
88: unlink("$lonidsdir/$linkname.id");
89: }
90: my $made_symlink = eval { symlink("$lonidsdir/$cookie.id",
91: "$lonidsdir/$linkname.id"); 1 };
92: if ($made_symlink) {
93: $defaultcookie = "lonLinkID=$linkname; path=/; HttpOnly;";
94: &Apache::lonnet::appenv({'user.linkedenv' => $linkname});
95: }
96: }
97: } else {
98: $defaultcookie = "lonID=$cookie; path=/; HttpOnly;";
99: }
100: # -------------------------------------------------------- Menu script and info
101: my $destination = $lowerurl;
102: if ($env{'request.lti.login'}) {
103: if (($env{'request.lti.reqcrs'}) && ($env{'request.lti.reqrole'} eq 'cc')) {
104: &Apache::loncommon::content_type($r,'text/html');
105: if ($securecookie) {
106: $r->headers_out->add('Set-cookie' => $securecookie);
107: }
108: if ($defaultcookie) {
109: $r->headers_out->add('Set-cookie' => $defaultcookie);
110: }
111: $r->send_http_header;
112: if (ref($form) eq 'HASH') {
113: $form->{'lti.login'} = $env{'request.lti.login'};
114: $form->{'lti.reqcrs'} = $env{'request.lti.reqcrs'};
115: $form->{'lti.reqrole'} = $env{'request.lti.reqrole'};
116: $form->{'lti.sourcecrs'} = $env{'request.lti.sourcecrs'};
117: }
118: &Apache::ltiauth::lti_reqcrs($r,$domain,$form,$username,$domain);
119: return;
120: }
121: if ($env{'request.lti.selfenrollrole'}) {
122: if (&Apache::ltiauth::lti_enroll($username,$domain,
123: $env{'request.lti.selfenrollrole'}) eq 'ok') {
124: $form->{'role'} = $env{'request.lti.selfenrollrole'};
125: &Apache::lonnet::delenv('request.lti.selfenrollrole');
126: } else {
127: &Apache::ltiauth::invalid_request($r,24);
128: }
129: }
130: }
131: if (defined($form->{role})) {
132: my $envkey = 'user.role.'.$form->{role};
133: my $now=time;
134: my $then=$env{'user.login.time'};
135: my $refresh=$env{'user.refresh.time'};
136: my $update=$env{'user.update.time'};
137: if (!$update) {
138: $update = $then;
139: }
140: if (exists($env{$envkey})) {
141: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
142: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
143: \$trolecode,\$tstatus,\$tstart,\$tend);
144: if ($tstatus eq 'is') {
145: $destination .= ($destination =~ /\?/) ? '&' : '?';
146: my $newrole = &HTML::Entities::encode($form->{role},'"<>&');
147: $destination .= 'selectrole=1&'.$newrole.'=1';
148: }
149: }
150: }
151: if (defined($form->{symb})) {
152: my $destsymb = $form->{symb};
153: my $encrypted;
154: if ($destsymb =~ m{^/enc/}) {
155: $encrypted = 1;
156: if ($cid) {
157: $destsymb = &Apache::lonenc::unencrypted($destsymb,$cid);
158: }
159: }
160: $destination .= ($destination =~ /\?/) ? '&' : '?';
161: if ($destsymb =~ /___/) {
162: my ($map,$resid,$desturl)=split(/___/,$destsymb);
163: $desturl = &Apache::lonnet::clutter($desturl);
164: if ($encrypted) {
165: $desturl = &Apache::lonenc::encrypted($desturl,1,$cid);
166: $destsymb = $form->{symb};
167: }
168: $desturl = &HTML::Entities::encode($desturl,'"<>&');
169: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
170: $destination .= 'destinationurl='.$desturl.
171: '&destsymb='.$destsymb;
172: } elsif (!$encrypted) {
173: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
174: $destination .= 'destinationurl='.$destsymb;
175: }
176: }
177: if ($destination =~ m{^/adm/roles}) {
178: $destination .= ($destination =~ /\?/) ? '&' : '?';
179: $destination .= 'source=login';
180: }
181:
182: my $brcrum = [{'href' => '',
183: 'text' => 'Successful Login'},];
184: my $args = {'no_inline_link' => 1,
185: 'bread_crumbs' => $brcrum,};
186: if (($env{'request.deeplink.login'} eq $lowerurl) &&
187: (($env{'request.linkprot'}) || ($env{'request.linkkey'} ne ''))) {
188: my %info;
189: if ($env{'request.linkprot'}) {
190: $info{'linkprot'} = $env{'request.linkprot'};
191: foreach my $item ('linkprotuser','linkprotexit') {
192: if ($form->{$item}) {
193: $info{$item} = $form->{$item};
194: }
195: }
196: $args = {'only_body' => 1,};
197: } elsif ($env{'request.linkkey'} ne '') {
198: $info{'linkkey'} = $env{'request.linkkey'};
199: }
200: $info{'origurl'} = $lowerurl;
201: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
202: unless (($token eq 'con_lost') || ($token eq 'refused') ||
203: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
204: $destination .= (($destination =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
205: }
206: }
207:
208: my $windowname = 'loncapaclient';
209: if ($env{'request.lti.login'}) {
210: $windowname .= 'lti';
211: }
212: my $windowinfo = Apache::lonhtmlcommon::scripttag('self.name="'.$windowname.'";');
213: unless ((defined($form->{role})) || (defined($form->{symb}))) {
214: my $update=$env{'user.update.time'};
215: if (!$update) {
216: $update = $env{'user.login.time'};
217: }
218: my %roles_in_env;
219: my $showcount = &Apache::lonroles::roles_from_env(\%roles_in_env,$update);
220: if ($showcount == 1) {
221: foreach my $rolecode (keys(%roles_in_env)) {
222: my ($cid) = ($rolecode =~ m{^\Quser.role.st./\E($match_domain/$match_courseid)(?:/|$)});
223: if ($cid) {
224: my %coursedescription =
225: &Apache::lonnet::coursedescription($cid,{'one_time' => '1'});
226: if ($coursedescription{'type'} eq 'Placement') {
227: $args->{'crstype'} = 'Placement';
228: }
229: last;
230: }
231: }
232: }
233: }
234:
235: # ------------------------------------------------- Output for successful login
236:
237: &Apache::loncommon::content_type($r,'text/html');
238: if ($securecookie) {
239: $r->headers_out->add('Set-cookie' => $securecookie);
240: }
241: if ($defaultcookie) {
242: $r->headers_out->add('Set-cookie' => $defaultcookie);
243: }
244: if ($expirepub) {
245: my $c = new CGI::Cookie(-name => 'lonPubID',
246: -value => '',
247: -expires => '-10y',);
248: $r->headers_out->add('Set-cookie' => $c);
249: }
250: $r->send_http_header;
251:
252: my ($start_page,$js,$pagebody,$end_page);
253: if ($env{'request.lti.login'}) {
254: $args = {'only_body' => 1};
255: if ($env{'request.lti.target'} eq '') {
256: my $ltitarget = (($destination =~ /\?/) ? '&' : '?').
257: 'ltitarget=iframe';
258: &js_escape(\$destination);
259: $js = <<"ENDJS";
260:
261: <script type="text/javascript">
262: // <![CDATA[
263: function setLTItarget() {
264: var newloc = '$destination';
265: if (parent !== window) {
266: newloc += '$ltitarget';
267: }
268: window.location.href=newloc;
269: }
270: // ]]>
271: </script>
272:
273: ENDJS
274: $args->{'add_entries'} = {'onload' => "javascript:setLTItarget();"};
275: $pagebody = '<noscript><span class="LC_warning">'
276: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
277: .'</span></noscript>';
278: } else {
279: $args->{'redirect'} = [0,$destination,1];
280: }
281: $start_page=&Apache::loncommon::start_page('',$js,$args);
282: } else {
283: $args->{'redirect'} = [0,$destination];
284: $start_page=&Apache::loncommon::start_page('Successful Login',
285: $js,$args);
286: unless ($env{'request.linkprot'}) {
287: my %lt=&Apache::lonlocal::texthash(
288: 'wel' => 'Welcome',
289: 'pro' => 'Login problems?',
290: );
291: $pagebody = "<h1>$lt{'wel'}</h1>\n".
292: &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>');
293: my $loginhelp = &loginhelpdisplay($domain);
294: if ($loginhelp) {
295: $pagebody .= '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
296: }
297: }
298: }
299: $end_page = &Apache::loncommon::end_page();
300: $r->print(<<ENDSUCCESS);
301: $start_page
302: $windowinfo
303: $pagebody
304: $end_page
305: ENDSUCCESS
306: return;
307: }
308:
309: # --------------------------------------------------------------- Failed login!
310:
311: sub failed {
312: my ($r,$message,$form,$authhost) = @_;
313: (undef,undef,undef,my $clientmathml,my $clientunicode) =
314: &Apache::loncommon::decode_user_agent();
315: my $args = {};
316: if ($clientunicode && !$clientmathml) {
317: $args = {'browser.unicode' => 1};
318: }
319: if ($form->{firsturl} =~ m{^/tiny/$match_domain/\w+$}) {
320: if ($form->{linkprot}) {
321: $args->{only_body} = 1;
322: }
323: }
324:
325: my @actions;
326: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
327: my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
328: my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
329: if (&Apache::lonnet::domain($udom,'description') eq '') {
330: undef($udom);
331: }
332: my $authtype;
333: if (($udom ne '') && ($uname ne '') && ($authhost eq 'no_host')) {
334: $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
335: }
336: my $retry = '/adm/login';
337: if (($uname eq $form->{'uname'}) && ($authtype !~ /^lti:/)) {
338: $retry .= '?username='.$uname;
339: }
340: if ($udom) {
341: $retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom;
342: }
343: my $lonhost = $r->dir_config('lonHostID');
344: my $querystr;
345: my $result = &set_retry_token($form,$lonhost,\$querystr);
346: if ($result eq 'fail') {
347: if (exists($form->{role})) {
348: my $role = &Apache::loncommon::cleanup_html($form->{role});
349: if ($role ne '') {
350: $retry .= (($retry=~/\?/)?'&':'?').'role='.$role;
351: }
352: }
353: if (exists($form->{symb})) {
354: my $symb = &Apache::loncommon::cleanup_html($form->{symb});
355: if ($symb ne '') {
356: $retry .= (($retry=~/\?/)?'&':'?').'symb='.$symb;
357: }
358: }
359: if (exists($form->{firsturl})) {
360: my $firsturl = &Apache::loncommon::cleanup_html($form->{firsturl});
361: if ($firsturl ne '') {
362: $retry .= (($retry=~/\?/)?'&':'?').'firsturl='.$firsturl;
363: if ($form->{firsturl} =~ m{^/tiny/$match_domain/\w+$}) {
364: unless (exists($form->{linkprot})) {
365: if (exists($form->{linkkey})) {
366: $retry .= 'linkkey='.$form->{linkkey};
367: }
368: }
369: }
370: }
371: }
372: if (exists($form->{linkprot})) {
373: my %info = (
374: 'linkprot' => $form->{'linkprot'},
375: );
376: foreach my $item ('linkprotuser','linkprotexit') {
377: if ($form->{$item} ne '') {
378: $info{$item} = $form->{$item};
379: }
380: }
381: my $ltoken = &Apache::lonnet::tmpput(\%info,
382: $r->dir_config('lonHostID'),'retry');
383: if ($ltoken) {
384: $retry .= (($retry =~ /\?/) ? '&' : '?').'ltoken='.$ltoken;
385: }
386: }
387: } elsif ($querystr ne '') {
388: $retry .= (($retry=~/\?/)?'&':'?').$querystr;
389: }
390: my $end_page = &Apache::loncommon::end_page();
391: &Apache::loncommon::content_type($r,'text/html');
392: $r->send_http_header;
393: if ($authtype =~ /^lti:/) {
394: $message = &mt('Direct login is not supported with the username you entered.').
395: '<br /><br />'.
396: &mt('You likely need to launch LON-CAPA from within a course in a different Learning Management System.').
397: '<br />'.
398: &mt('You can also try to log in with a different username.');
399: @actions =
400: (&mt('Try your [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
401: } else {
402: $message = &mt($message);
403: @actions =
404: (&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
405: }
406: my $loginhelp = &loginhelpdisplay($udom);
407: if ($loginhelp) {
408: push(@actions, '<a href="'.$loginhelp.'">'.&mt('Login problems?').'</a>');
409: }
410: #FIXME: link to helpdesk might be added here
411: $r->print(
412: $start_page
413: .'<h2>'.&mt('Sorry ...').'</h2>'
414: .&Apache::lonhtmlcommon::confirm_success($message,1).'<br /><br />'
415: .&Apache::lonhtmlcommon::actionbox(\@actions)
416: .$end_page
417: );
418: }
419:
420: # ------------------------------------------------------------------ Rerouting!
421:
422: sub reroute {
423: my ($r) = @_;
424: &Apache::loncommon::content_type($r,'text/html');
425: $r->send_http_header;
426: my $msg='<b>'.&mt('Sorry ...').'</b><br />'
427: .&mt('Please [_1]log in again[_2].');
428: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
429: }
430:
431: # ---------------------------------------------------------------- Main handler
432:
433: sub handler {
434: my $r = shift;
435: my $londocroot = $r->dir_config('lonDocRoot');
436: # Are we re-routing?
437: if (-e "$londocroot/lon-status/reroute.txt") {
438: &reroute($r);
439: return OK;
440: }
441:
442: &Apache::lonlocal::get_language_handle($r);
443:
444: # -------------------------------- Prevent users from attempting to login twice
445: my $handle = &Apache::lonnet::check_for_valid_session($r);
446: if ($handle ne '') {
447: my $lonidsdir=$r->dir_config('lonIDsDir');
448: if ($handle=~/^publicuser\_/) {
449: # For "public user" - remove it, we apparently really want to login
450: unlink($r->dir_config('lonIDsDir')."/$handle.id");
451: } else {
452: # Indeed, a valid token is found
453: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
454: &Apache::loncommon::content_type($r,'text/html');
455: $r->send_http_header;
456: my $start_page =
457: &Apache::loncommon::start_page('Already logged in');
458: my $end_page =
459: &Apache::loncommon::end_page();
460: my $dest = '/adm/roles';
461: my %form = &get_form_items($r);
462: if ($form{'logtoken'}) {
463: my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
464: $form{'serverid'});
465: unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
466: ($tmpinfo eq 'no_such_host')) {
467: my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
468: $firsturl = &unescape($firsturl);
469: my %info;
470: foreach my $item (@rest) {
471: my ($key,$value) = split(/=/,$item);
472: $info{$key} = &unescape($value);
473: }
474: if ($firsturl ne '') {
475: $info{'firsturl'} = $firsturl;
476: $dest = $firsturl;
477: my $relogin;
478: if ($dest =~ m{^/tiny/$match_domain/\w+$}) {
479: if ($env{'request.course.id'}) {
480: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
481: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
482: my $symb = &Apache::loncommon::symb_from_tinyurl($dest,$cnum,$cdom);
483: if ($symb) {
484: unless (&set_deeplink_login(%info) eq 'ok') {
485: $relogin = 1;
486: }
487: }
488: }
489: if ($relogin) {
490: $r->print(
491: $start_page
492: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
493: .'<p>'.&mt('Please [_1]log out[_2] first, and then try your access again',
494: '<a href="/adm/logout">','</a>')
495: .'</p>'
496: .$end_page);
497: } else {
498: if (($info{'linkprot'}) || ($info{'linkkey'} ne '')) {
499: if (($info{'linkprot'}) && ($info{'linkprotuser'} ne '')) {
500: unless ($info{'linkprotuser'} eq $env{'user.name'}.':'.$env{'user.domain'}) {
501: $r->print(
502: $start_page
503: .'<p class="LC_warning">'.&mt('You are already logged in, but as a different user from the one expected for the link you followed from another system').'</p>'
504: .'<p>'.&mt('Please [_1]log out[_2] first, and then try following the link again from the other system',
505: '<a href="/adm/logout">','</a>')
506:
507: .'</p>'
508: .$end_page);
509: return OK;
510: }
511: }
512: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
513: unless (($token eq 'con_lost') || ($token eq 'refused') ||
514: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
515: $dest .= (($dest =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
516: }
517: }
518: $r->print(
519: $start_page
520: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
521: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4] first, and then try your access again',
522: '<a href="'.$dest.'">','</a>',
523: '<a href="/adm/logout">','</a>')
524: .'</p>'
525: .$end_page);
526: }
527: return OK;
528: }
529: }
530: }
531: }
532: $r->print(
533: $start_page
534: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
535: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
536: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
537: .'</p>'
538: .$end_page
539: );
540: return OK;
541: }
542: }
543:
544: # ---------------------------------------------------- No valid token, continue
545:
546: my %form = &get_form_items($r);
547: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
548: &failed($r,'Username, password and domain need to be specified.',
549: \%form);
550: return OK;
551: }
552:
553: # split user logging in and "su"-user
554:
555: ($form{'uname'},$form{'suname'},$form{'sudom'})=split(/\:/,$form{'uname'});
556: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
557: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
558: $form{'udom'} = &LONCAPA::clean_domain($form{'udom'});
559: $form{'sudom'} = &LONCAPA::clean_domain($form{'sudom'});
560:
561: my $role = $r->dir_config('lonRole');
562: my $domain = $r->dir_config('lonDefDomain');
563: my $prodir = $r->dir_config('lonUsersDir');
564: my $contact_name = &mt('LON-CAPA helpdesk');
565:
566: # ---------------------------------------- Get the information from login token
567:
568: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
569: $form{'serverid'});
570:
571: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
572: ($tmpinfo eq 'no_such_host')) {
573: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
574: return OK;
575: } else {
576: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
577: $form{'serverid'});
578: if ( $reply ne 'ok' ) {
579: &failed($r,'Session could not be opened.',\%form);
580: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
581: return OK;
582: }
583: }
584:
585: if (!&Apache::lonnet::domain($form{'udom'})) {
586: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
587: return OK;
588: }
589:
590: my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
591: $firsturl = &unescape($firsturl);
592: foreach my $item (@rest) {
593: my ($key,$value) = split(/=/,$item);
594: $form{$key} = &unescape($value);
595: }
596: if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
597: $form{'firsturl'} = $firsturl;
598: }
599: my $upass = $ENV{HTTPS} ? $form{'upass0'}
600: : &Apache::loncommon::des_decrypt($des_key,$form{'upass0'});
601:
602: # ---------------------------------------------------------------- Authenticate
603:
604: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
605: my ($cancreate,$statustocreate) =
606: &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
607: my $defaultauth;
608: if (ref($cancreate) eq 'ARRAY') {
609: if (grep(/^login$/,@{$cancreate})) {
610: $defaultauth = 1;
611: }
612: }
613: my $clientcancheckhost = 1;
614: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
615: $form{'udom'},$defaultauth,
616: $clientcancheckhost);
617:
618: # --------------------------------------------------------------------- Failed?
619:
620: if ($authhost eq 'no_host') {
621: my $pwdverify;
622: if (&Apache::lonnet::homeserver($form{'uname'},$form{'udom'}) eq 'no_host') {
623: my %possunames = &alternate_unames_check($form{'uname'},$form{'udom'});
624: if (keys(%possunames) > 0) {
625: foreach my $rulematch (keys(%possunames)) {
626: my $possuname = $possunames{$rulematch};
627: if (($possuname ne '') && ($possuname =~ /^$match_username$/)) {
628: $authhost=Apache::lonnet::authenticate($possuname,$upass,
629: $form{'udom'},undef,
630: $clientcancheckhost);
631: if (($authhost eq 'no_host') || ($authhost eq 'no_account_on_host')) {
632: next;
633: } elsif (($authhost ne '') && (&Apache::lonnet::hostname($authhost) ne '')) {
634: $pwdverify = 1;
635: &Apache::lonnet::logthis("Authenticated user: $possuname was submitted as: $form{'uname'}");
636: $form{'uname'} = $possuname;
637: last;
638: }
639: }
640: }
641: }
642: }
643: unless ($pwdverify) {
644: &failed($r,'Username and/or password could not be authenticated.',
645: \%form,$authhost);
646: return OK;
647: }
648: } elsif ($authhost eq 'no_account_on_host') {
649: if ($defaultauth) {
650: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
651: unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
652: return OK;
653: }
654: my $start_page =
655: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
656: '',{'no_inline_link' => 1,});
657: my $lonhost = $r->dir_config('lonHostID');
658: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
659: my $contacts =
660: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
661: $form{'udom'},$origmail);
662: my ($contact_email) = split(',',$contacts);
663: my $output =
664: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
665: $domdesc,'',$lonhost,
666: $contact_email,$contact_name,
667: undef,$statustocreate);
668: &Apache::loncommon::content_type($r,'text/html');
669: $r->send_http_header;
670: &Apache::createaccount::print_header($r,$start_page);
671: $r->print('<h3>'.&mt('Account creation').'</h3>'.
672: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
673: $output.&Apache::loncommon::end_page());
674: return OK;
675: } else {
676: &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form);
677: return OK;
678: }
679: }
680:
681: if (($firsturl eq '') ||
682: ($firsturl=~/^\/adm\/(logout|remote)/)) {
683: $firsturl='/adm/roles';
684: }
685:
686: my ($hosthere,%sessiondata);
687: if ($form{'iptoken'}) {
688: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
689: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
690: if (($sessiondata{'domain'} eq $form{'udom'}) &&
691: ($sessiondata{'username'} eq $form{'uname'})) {
692: $hosthere = 1;
693: }
694: }
695:
696: # --------------------------------- Are we attempting to login as somebody else?
697: if ($form{'suname'}) {
698: my ($suname,$sudom,$sudomref);
699: $suname = $form{'suname'};
700: $sudom = $form{'udom'};
701: if ($form{'sudom'}) {
702: unless ($sudom eq $form{'sudom'}) {
703: if (&Apache::lonnet::domain($form{'sudom'})) {
704: $sudomref = [$form{'sudom'}];
705: $sudom = $form{'sudom'};
706: }
707: }
708: }
709: # ------------ see if the original user has enough privileges to pull this stunt
710: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'},$sudomref)) {
711: # ---------------------------------------------------- see if the su-user exists
712: unless (&Apache::lonnet::homeserver($suname,$sudom) eq 'no_host') {
713: # ------------------------------ see if the su-user is not too highly privileged
714: if (&Apache::lonnet::privileged($suname,$sudom)) {
715: &Apache::lonnet::logthis('Attempted switch user to privileged user');
716: } else {
717: my $noprivswitch;
718: #
719: # su-user's home server and user's home server must have one of:
720: # (a) same domain
721: # (b) same primary library server for the two domains
722: # (c) same "internet domain" for primary library server(s) for home servers' domains
723: #
724: my $suprim = &Apache::lonnet::domain($sudom,'primary');
725: my $suintdom = &Apache::lonnet::internet_dom($suprim);
726: unless ($sudom eq $form{'udom'}) {
727: my $uprim = &Apache::lonnet::domain($form{'udom'},'primary');
728: my $uintdom = &Apache::lonnet::internet_dom($uprim);
729: unless ($suprim eq $uprim) {
730: unless ($suintdom eq $uintdom) {
731: &Apache::lonnet::logthis('Attempted switch user '
732: .'to user with different "internet domain".');
733: $noprivswitch = 1;
734: }
735: }
736: }
737:
738: unless ($noprivswitch) {
739: #
740: # server where log-in occurs must have same "internet domain" as su-user's home
741: # server
742: #
743: my $lonhost = $r->dir_config('lonHostID');
744: my $hostintdom = &Apache::lonnet::internet_dom($lonhost);
745: if ($hostintdom ne $suintdom) {
746: &Apache::lonnet::logthis('Attempted switch user on a '
747: .'server with a different "internet domain".');
748: } else {
749:
750: # -------------------------------------------------------- actually switch users
751:
752: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.
753: $form{'udom'}.' logging in as '.$suname.':'.$sudom);
754: $form{'uname'}=$suname;
755: if ($form{'udom'} ne $sudom) {
756: $form{'udom'}=$sudom;
757: }
758: }
759: }
760: }
761: }
762: } else {
763: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
764: }
765: }
766:
767: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
768: if (($form{'linkprot'}) && ($form{'linkprotuser'} ne '')) {
769: unless($form{'linkprotuser'} eq $form{'uname'}.':'.$form{'udom'}) {
770: delete($form{'udom'});
771: delete($form{'uname'});
772: &failed($r,'Username and/or domain are different to that expected for the link you followed from another system',
773: \%form,$authhost);
774: return OK;
775: }
776: }
777: }
778:
779: my ($is_balancer,$otherserver);
780:
781: unless ($hosthere) {
782: ($is_balancer,$otherserver) =
783: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'},'login');
784: if ($is_balancer) {
785: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
786: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
787: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
788: $otherserver = $found_server;
789: }
790: if ($otherserver eq '') {
791: my $lowest_load;
792: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'});
793: if ($lowest_load > 100) {
794: $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$form{'udom'});
795: }
796: }
797: if ($otherserver ne '') {
798: my @hosts = &Apache::lonnet::current_machine_ids();
799: if (grep(/^\Q$otherserver\E$/,@hosts)) {
800: $hosthere = $otherserver;
801: }
802: }
803: }
804: }
805:
806: if (($is_balancer) && (!$hosthere)) {
807: if ($otherserver) {
808: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
809: \%form);
810: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
811: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
812: $switchto .= '&origurl='.$firsturl;
813: }
814: if ($form{'role'}) {
815: $switchto .= '&role='.$form{'role'};
816: }
817: if ($form{'symb'}) {
818: $switchto .= '&symb='.$form{'symb'};
819: }
820: if ($form{'linkprot'}) {
821: $env{'request.linkprot'} = $form{'linkprot'};
822: foreach my $item ('linkprotuser','linkprotexit') {
823: if ($form{$item}) {
824: $env{'request.'.$item} = $form{$item};
825: }
826: }
827: } elsif ($form{'linkkey'} ne '') {
828: $env{'request.linkkey'} = $form{'linkkey'};
829: }
830: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
831: &set_deeplink_login(%form);
832: }
833: $r->internal_redirect($switchto);
834: } else {
835: &Apache::loncommon::content_type($r,'text/html');
836: $r->send_http_header;
837: $r->print(&noswitch());
838: }
839: return OK;
840: } else {
841: if (!&check_can_host($r,\%form,$authhost)) {
842: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
843: if ($otherserver) {
844: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
845: \%form);
846: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
847: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
848: $switchto .= '&origurl='.$firsturl;
849: }
850: if ($form{'role'}) {
851: $switchto .= '&role='.$form{'role'};
852: }
853: if ($form{'symb'}) {
854: $switchto .= '&symb='.$form{'symb'};
855: }
856: if ($form{'linkprot'}) {
857: $env{'request.linkprot'} = $form{'linkprot'};
858: foreach my $item ('linkprotuser','linkprotexit') {
859: if ($form{$item}) {
860: $env{'request.'.$item} = $form{$item};
861: }
862: }
863: } elsif ($form{'linkkey'} ne '') {
864: $env{'request.linkkey'} = $form{'linkkey'};
865: }
866: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
867: &set_deeplink_login(%form);
868: }
869: $r->internal_redirect($switchto);
870: } else {
871: &Apache::loncommon::content_type($r,'text/html');
872: $r->send_http_header;
873: $r->print(&noswitch());
874: }
875: return OK;
876: }
877:
878: # ------------------------------------------------------- Do the load balancing
879:
880: # ---------------------------------------------------------- Determine own load
881: my $loadlim = $r->dir_config('lonLoadLim');
882: my $loadavg;
883: {
884: my $loadfile=Apache::File->new('/proc/loadavg');
885: $loadavg=<$loadfile>;
886: }
887: $loadavg =~ s/\s.*//g;
888: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
889: my $userloadpercent=&Apache::lonnet::userload();
890:
891: # ---------------------------------------------------------- Are we overloaded?
892: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
893: my $unloaded=Apache::lonnet::spareserver($r,$loadpercent,$userloadpercent,1,$form{'udom'});
894: if (!$unloaded) {
895: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
896: }
897: if ($unloaded) {
898: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
899: undef,\%form);
900: if ($form{'linkprot'}) {
901: $env{'request.linkprot'} = $form{'linkprot'};
902: } elsif ($form{'linkkey'} ne '') {
903: $env{'request.linkkey'} = $form{'linkkey'};
904: }
905: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
906: &set_deeplink_login(%form);
907: }
908: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
909: return OK;
910: }
911: }
912: if (($is_balancer) && ($hosthere)) {
913: $form{'noloadbalance'} = $hosthere;
914: }
915: my $extra_env;
916: if (($hosthere) && ($sessiondata{'sessionserver'} ne '')) {
917: if ($sessiondata{'origurl'} ne '') {
918: $firsturl = $sessiondata{'origurl'};
919: $form{'firsturl'} = $sessiondata{'origurl'};
920: my @names = ('role','symb','linkprot','linkkey');
921: foreach my $item (@names) {
922: if ($sessiondata{$item} ne '') {
923: $form{$item} = $sessiondata{$item};
924: }
925: }
926: }
927: }
928: if ($form{'linkprot'}) {
929: my ($linkprotector,$uri) = split(/:/,$form{'linkprot'},2);
930: if ($linkprotector) {
931: $extra_env = {'user.linkprotector' => $linkprotector,
932: 'user.linkproturi' => $uri};
933: }
934: } elsif ($form{'linkkey'} ne '') {
935: $extra_env = {'user.deeplinkkey' => $form{'linkkey'},
936: 'user.keyedlinkuri' => $form{'firsturl'}};
937: }
938: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
939: &set_deeplink_login(%form);
940: if ($form{'linkprot'}) {
941: if (ref($extra_env) eq 'HASH') {
942: %{$extra_env} = ( %{$extra_env}, 'request.linkprot' => $form{'linkprot'} );
943: } else {
944: $extra_env = {'request.linkprot' => $form{'linkprot'}};
945: }
946: if ($form{'linkprotexit'}) {
947: $extra_env->{'request.linkprotexit'} = $form{'linkprotexit'};
948: }
949: } elsif ($form{'linkkey'} ne '') {
950: if (ref($extra_env) eq 'HASH') {
951: %{$extra_env} = ( %{$extra_env}, 'request.linkkey' => $form{'linkkey'} );
952: } else {
953: $extra_env = {'request.linkkey' => $form{'linkkey'}};
954: }
955: }
956: if ($env{'request.deeplink.login'}) {
957: if (ref($extra_env) eq 'HASH') {
958: %{$extra_env} = ( %{$extra_env}, 'request.deeplink.login' => $form{'firsturl'} );
959: } else {
960: $extra_env = {'request.deeplink.login' => $form{'firsturl'}};
961: }
962: }
963: }
964: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,$extra_env,
965: \%form);
966: return OK;
967: }
968: }
969:
970: sub get_form_items {
971: my ($r) = @_;
972: my $buffer;
973: if ($r->header_in('Content-length') > 0) {
974: $r->read($buffer,$r->header_in('Content-length'),0);
975: }
976: my %form;
977: foreach my $pair (split(/&/,$buffer)) {
978: my ($name,$value) = split(/=/,$pair);
979: $value =~ tr/+/ /;
980: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
981: $form{$name}=$value;
982: }
983: return %form;
984: }
985:
986: sub set_deeplink_login {
987: my (%form) = @_;
988: my $disallow;
989: if ($form{'firsturl'} =~ m{^/tiny/($match_domain)/\w+$}) {
990: my $cdom = $1;
991: my ($cnum,$symb) = &Apache::loncommon::symb_from_tinyurl($form{'firsturl'},'',$cdom);
992: if ($symb) {
993: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
994: my $deeplink;
995: if ($symb =~ /\.(page|sequence)$/) {
996: my $mapname = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($symb))[2]);
997: my $navmap = Apache::lonnavmaps::navmap->new();
998: if (ref($navmap)) {
999: $deeplink = $navmap->get_mapparam(undef,$mapname,'0.deeplink');
1000: }
1001: } else {
1002: $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$symb);
1003: }
1004: if ($deeplink ne '') {
1005: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
1006: if (($protect ne 'none') && ($protect ne '')) {
1007: my ($acctype,$item) = split(/:/,$protect);
1008: if ($acctype =~ /lti(c|d)$/) {
1009: unless ($form{'linkprot'} eq $item.$1.':'.$env{'request.deeplink.login'}) {
1010: $disallow = 1;
1011: }
1012: } elsif ($acctype eq 'key') {
1013: unless ($form{'linkkey'} eq $item) {
1014: $disallow = 1;
1015: }
1016: }
1017: }
1018: }
1019: unless ($disallow) {
1020: $env{'request.deeplink.login'} = $form{'firsturl'};
1021: }
1022: } else {
1023: $env{'request.deeplink.login'} = $form{'firsturl'};
1024: }
1025: }
1026: }
1027: if ($disallow) {
1028: return;
1029: }
1030: return 'ok';
1031: }
1032:
1033: sub set_retry_token {
1034: my ($form,$lonhost,$querystr) = @_;
1035: if (ref($form) eq 'HASH') {
1036: my ($firsturl,$token,$extras,@names);
1037: @names = ('role','symb','linkprotuser','linkprotexit','linkprot','linkkey','iptoken');
1038: foreach my $name (@names) {
1039: if ($form->{$name} ne '') {
1040: $extras .= '&'.$name.'='.&escape($form->{$name});
1041: last if ($name eq 'linkprot');
1042: }
1043: }
1044: my $firsturl = $form->{'firsturl'};
1045: if (($firsturl ne '') || ($extras ne '')) {
1046: $extras .= ':retry';
1047: $token = &Apache::lonnet::reply('tmpput:'.&escape($firsturl).
1048: $extras,$lonhost);
1049: if (($token eq 'con_lost') || ($token eq 'no_such_host')) {
1050: return 'fail';
1051: } else {
1052: if (ref($querystr)) {
1053: $$querystr = 'retry='.$token;
1054: }
1055: return 'ok';
1056: }
1057: }
1058: }
1059: return;
1060: }
1061:
1062: sub check_can_host {
1063: my ($r,$form,$authhost,$domdesc) = @_;
1064: return unless (ref($form) eq 'HASH');
1065: my $canhost = 1;
1066: my $lonhost = $r->dir_config('lonHostID');
1067: my $udom = $form->{'udom'};
1068: my @intdoms;
1069: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
1070: if (ref($internet_names) eq 'ARRAY') {
1071: @intdoms = @{$internet_names};
1072: }
1073: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1074: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1075: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1076: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
1077: my $hostname = &Apache::lonnet::hostname($lonhost);
1078: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
1079: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1080: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1081: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
1082: my $loncaparev;
1083: if ($authhost eq 'no_account_on_host') {
1084: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1085: } else {
1086: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1087: }
1088: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
1089: $udomdefaults{'remotesessions'},
1090: $defdomdefaults{'hostedsessions'});
1091: }
1092: unless ($canhost) {
1093: if ($authhost eq 'no_account_on_host') {
1094: my $checkloginvia = 1;
1095: my ($login_host,$hostname) =
1096: &Apache::lonnet::choose_server($udom,$checkloginvia);
1097: &Apache::loncommon::content_type($r,'text/html');
1098: $r->send_http_header;
1099: if ($login_host ne '') {
1100: my $protocol = $Apache::lonnet::protocol{$login_host};
1101: $protocol = 'http' if ($protocol ne 'https');
1102: my $alias = &Apache::lonnet::use_proxy_alias($r,$login_host);
1103: $hostname = $alias if ($alias ne '');
1104: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
1105: #FIXME Should preserve where user was going and linkprot by setting ltoken at $login_host
1106: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
1107: '<h3>'.&mt('Account creation').'</h3>'.
1108: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
1109: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
1110: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
1111: &Apache::loncommon::end_page());
1112: } else {
1113: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
1114: '<h3>'.&mt('Account creation unavailable').'</h3>'.
1115: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
1116: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
1117: &Apache::loncommon::end_page());
1118: }
1119: } else {
1120: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
1121: $form);
1122: if ($form->{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
1123: $env{'request.deeplink.login'} = $form->{'firsturl'};
1124: }
1125: if ($form->{'linkprot'}) {
1126: $env{'request.linkprot'} = $form->{'linkprot'};
1127: } elsif ($form->{'linkkey'} ne '') {
1128: $env{'request.linkkey'} = $form->{'linkkey'};
1129: }
1130: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1131: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
1132: }
1133: }
1134: return $canhost;
1135: }
1136:
1137: sub noswitch {
1138: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
1139: '<h3>'.&mt('Session unavailable').'</h3>'.
1140: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
1141: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
1142: &Apache::loncommon::end_page();
1143: return $result;
1144: }
1145:
1146: sub loginhelpdisplay {
1147: my ($authdomain) = @_;
1148: my $login_help = 1;
1149: my $lang = &Apache::lonlocal::current_language();
1150: if ($login_help) {
1151: my $dom = $authdomain;
1152: if ($dom eq '') {
1153: $dom = &Apache::lonnet::default_login_domain();
1154: }
1155: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
1156: my $loginhelp_url;
1157: if ($lang) {
1158: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
1159: if ($loginhelp_url ne '') {
1160: return $loginhelp_url;
1161: }
1162: }
1163: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
1164: if ($loginhelp_url ne '') {
1165: return $loginhelp_url;
1166: } else {
1167: return '/adm/loginproblems.html';
1168: }
1169: }
1170: return;
1171: }
1172:
1173: sub alternate_unames_check {
1174: my ($uname,$udom) = @_;
1175: my %possunames;
1176: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1177: if (ref($domdefs{'unamemap_rule'}) eq 'ARRAY') {
1178: if (@{$domdefs{'unamemap_rule'}} > 0) {
1179: %possunames =
1180: &Apache::lonnet::inst_rulecheck($udom,$uname,undef,
1181: 'unamemap',$domdefs{'unamemap_rule'});
1182: }
1183: }
1184: return %possunames;
1185: }
1186:
1187: 1;
1188: __END__
1189:
1190:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonauth.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / auth