File:
[LON-CAPA] /
loncom /
auth /
lonauth.pm
Revision
1.179:
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Fri Jun 2 01:20:26 2023 UTC (11 months, 2 weeks ago) by
raeburn
Branches:
MAIN
CVS tags:
version_2_12_X,
HEAD
- Bugs 6754 and 6907
- Return of grades to launcher CMS supported for resources or folders
accessed via LTI-mediated deep link.
- Support option: "Encrypt stored consumer secrets defined in domain"
- Signing of LTI payloads for roster retrieval, passback of grades,
and callback to logput launcher CMS session all now occur on
primary library server for course's domain.
1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.179 2023/06/02 01:20:26 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,$write_to_opener) = @_;
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: } elsif (defined($form->{display})) {
151: if ($destination =~ m{^/adm/email($|\?)}) {
152: $destination .= ($destination =~ /\?/) ? '&' : '?' .'display='.&escape($form->{display});
153: }
154: }
155: if (defined($form->{symb})) {
156: my $destsymb = $form->{symb};
157: my $encrypted;
158: if ($destsymb =~ m{^/enc/}) {
159: $encrypted = 1;
160: if ($cid) {
161: $destsymb = &Apache::lonenc::unencrypted($destsymb,$cid);
162: }
163: }
164: $destination .= ($destination =~ /\?/) ? '&' : '?';
165: if ($destsymb =~ /___/) {
166: my ($map,$resid,$desturl)=split(/___/,$destsymb);
167: $desturl = &Apache::lonnet::clutter($desturl);
168: if ($encrypted) {
169: $desturl = &Apache::lonenc::encrypted($desturl,1,$cid);
170: $destsymb = $form->{symb};
171: }
172: $desturl = &HTML::Entities::encode($desturl,'"<>&');
173: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
174: $destination .= 'destinationurl='.$desturl.
175: '&destsymb='.$destsymb;
176: } elsif (!$encrypted) {
177: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
178: $destination .= 'destinationurl='.$destsymb;
179: }
180: }
181: if ($destination =~ m{^/adm/roles}) {
182: $destination .= ($destination =~ /\?/) ? '&' : '?';
183: $destination .= 'source=login';
184: }
185:
186: my $brcrum = [{'href' => '',
187: 'text' => 'Successful Login'},];
188: my $args = {'no_inline_link' => 1,
189: 'bread_crumbs' => $brcrum,};
190: if (($env{'request.deeplink.login'} eq $lowerurl) &&
191: (($env{'request.linkprot'}) || ($env{'request.linkkey'} ne ''))) {
192: my %info;
193: if ($env{'request.linkprot'}) {
194: $info{'linkprot'} = $env{'request.linkprot'};
195: foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
196: if ($form->{$item}) {
197: $info{$item} = $form->{$item};
198: }
199: }
200: $args = {'only_body' => 1,};
201: } elsif ($env{'request.linkkey'} ne '') {
202: $info{'linkkey'} = $env{'request.linkkey'};
203: }
204: $info{'origurl'} = $lowerurl;
205: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
206: unless (($token eq 'con_lost') || ($token eq 'refused') ||
207: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
208: $destination .= (($destination =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
209: }
210: }
211:
212: my $windowname = 'loncapaclient';
213: if ($env{'request.lti.login'}) {
214: $windowname .= 'lti';
215: }
216: my $windowinfo = Apache::lonhtmlcommon::scripttag('self.name="'.$windowname.'";');
217: unless ((defined($form->{role})) || (defined($form->{symb}))) {
218: my $update=$env{'user.update.time'};
219: if (!$update) {
220: $update = $env{'user.login.time'};
221: }
222: my %roles_in_env;
223: my $showcount = &Apache::lonroles::roles_from_env(\%roles_in_env,$update);
224: if ($showcount == 1) {
225: foreach my $rolecode (keys(%roles_in_env)) {
226: my ($cid) = ($rolecode =~ m{^\Quser.role.st./\E($match_domain/$match_courseid)(?:/|$)});
227: if ($cid) {
228: my %coursedescription =
229: &Apache::lonnet::coursedescription($cid,{'one_time' => '1'});
230: if ($coursedescription{'type'} eq 'Placement') {
231: $args->{'crstype'} = 'Placement';
232: }
233: last;
234: }
235: }
236: }
237: }
238:
239: # ------------------------------------------------- Output for successful login
240:
241: &Apache::loncommon::content_type($r,'text/html');
242: if ($securecookie) {
243: $r->headers_out->add('Set-cookie' => $securecookie);
244: }
245: if ($defaultcookie) {
246: $r->headers_out->add('Set-cookie' => $defaultcookie);
247: }
248: if ($expirepub) {
249: my $c = new CGI::Cookie(-name => 'lonPubID',
250: -value => '',
251: -expires => '-10y',);
252: $r->headers_out->add('Set-cookie' => $c);
253: }
254: $r->send_http_header;
255:
256: my ($start_page,$js,$pagebody,$end_page);
257: if ($env{'request.lti.login'}) {
258: $args = {'only_body' => 1};
259: if ($env{'request.lti.target'} eq '') {
260: my $ltitarget = (($destination =~ /\?/) ? '&' : '?').
261: 'ltitarget=iframe';
262: &js_escape(\$destination);
263: $js = <<"ENDJS";
264:
265: <script type="text/javascript">
266: // <![CDATA[
267: function setLTItarget() {
268: var newloc = '$destination';
269: if (parent !== window) {
270: newloc += '$ltitarget';
271: }
272: window.location.href=newloc;
273: }
274: // ]]>
275: </script>
276:
277: ENDJS
278: $args->{'add_entries'} = {'onload' => "javascript:setLTItarget();"};
279: $pagebody = '<noscript><span class="LC_warning">'
280: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
281: .'</span></noscript>';
282: } else {
283: $args->{'redirect'} = [0,$destination,1];
284: }
285: $start_page=&Apache::loncommon::start_page('',$js,$args);
286: } else {
287: $args->{'redirect'} = [0,$destination,'',$write_to_opener];
288: $start_page=&Apache::loncommon::start_page('Successful Login',
289: $js,$args);
290: unless ($env{'request.linkprot'}) {
291: my %lt=&Apache::lonlocal::texthash(
292: 'wel' => 'Welcome',
293: 'pro' => 'Login problems?',
294: );
295: $pagebody = "<h1>$lt{'wel'}</h1>\n".
296: &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>');
297: my $loginhelp = &loginhelpdisplay($domain);
298: if ($loginhelp) {
299: $pagebody .= '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
300: }
301: }
302: }
303: $end_page = &Apache::loncommon::end_page();
304: $r->print(<<ENDSUCCESS);
305: $start_page
306: $windowinfo
307: $pagebody
308: $end_page
309: ENDSUCCESS
310: return;
311: }
312:
313: # --------------------------------------------------------------- Failed login!
314:
315: sub failed {
316: my ($r,$message,$form,$authhost) = @_;
317: (undef,undef,undef,my $clientmathml,my $clientunicode) =
318: &Apache::loncommon::decode_user_agent();
319: my $args = {};
320: if ($clientunicode && !$clientmathml) {
321: $args = {'browser.unicode' => 1};
322: }
323: if ($form->{firsturl} =~ m{^/tiny/$match_domain/\w+$}) {
324: if ($form->{linkprot}) {
325: $args->{only_body} = 1;
326: }
327: }
328:
329: my @actions;
330: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
331: my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
332: my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
333: if (&Apache::lonnet::domain($udom,'description') eq '') {
334: undef($udom);
335: }
336: my $authtype;
337: if (($udom ne '') && ($uname ne '') && ($authhost eq 'no_host')) {
338: $authtype = &Apache::lonnet::queryauthenticate($uname,$udom);
339: }
340: my $retry = '/adm/login';
341: if (($uname eq $form->{'uname'}) && ($authtype !~ /^lti:/)) {
342: $retry .= '?username='.$uname;
343: }
344: if ($udom) {
345: $retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom;
346: }
347: my $lonhost = $r->dir_config('lonHostID');
348: my $querystr;
349: my $result = &set_retry_token($form,$lonhost,\$querystr);
350: if ($result eq 'fail') {
351: if (exists($form->{role})) {
352: my $role = &Apache::loncommon::cleanup_html($form->{role});
353: if ($role ne '') {
354: $retry .= (($retry=~/\?/)?'&':'?').'role='.$role;
355: }
356: }
357: if (exists($form->{symb})) {
358: my $symb = &Apache::loncommon::cleanup_html($form->{symb});
359: if ($symb ne '') {
360: $retry .= (($retry=~/\?/)?'&':'?').'symb='.$symb;
361: }
362: }
363: if (exists($form->{firsturl})) {
364: my $firsturl = &Apache::loncommon::cleanup_html($form->{firsturl});
365: if ($firsturl ne '') {
366: $retry .= (($retry=~/\?/)?'&':'?').'firsturl='.$firsturl;
367: if ($form->{firsturl} =~ m{^/tiny/$match_domain/\w+$}) {
368: unless (exists($form->{linkprot})) {
369: if (exists($form->{linkkey})) {
370: $retry .= 'linkkey='.$form->{linkkey};
371: }
372: }
373: }
374: }
375: }
376: if (exists($form->{linkprot})) {
377: my %info = (
378: 'linkprot' => $form->{'linkprot'},
379: );
380: foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
381: if ($form->{$item} ne '') {
382: $info{$item} = $form->{$item};
383: }
384: }
385: my $ltoken = &Apache::lonnet::tmpput(\%info,
386: $r->dir_config('lonHostID'),'retry');
387: if ($ltoken) {
388: $retry .= (($retry =~ /\?/) ? '&' : '?').'ltoken='.$ltoken;
389: }
390: }
391: } elsif ($querystr ne '') {
392: $retry .= (($retry=~/\?/)?'&':'?').$querystr;
393: }
394: my $end_page = &Apache::loncommon::end_page();
395: &Apache::loncommon::content_type($r,'text/html');
396: $r->send_http_header;
397: if ($authtype =~ /^lti:/) {
398: $message = &mt('Direct login is not supported with the username you entered.').
399: '<br /><br />'.
400: &mt('You likely need to launch LON-CAPA from within a course in a different Learning Management System.').
401: '<br />'.
402: &mt('You can also try to log in with a different username.');
403: @actions =
404: (&mt('Try your [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
405: } else {
406: $message = &mt($message);
407: @actions =
408: (&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
409: }
410: my $loginhelp = &loginhelpdisplay($udom);
411: if ($loginhelp) {
412: push(@actions, '<a href="'.$loginhelp.'">'.&mt('Login problems?').'</a>');
413: }
414: #FIXME: link to helpdesk might be added here
415: $r->print(
416: $start_page
417: .'<h2>'.&mt('Sorry ...').'</h2>'
418: .&Apache::lonhtmlcommon::confirm_success($message,1).'<br /><br />'
419: .&Apache::lonhtmlcommon::actionbox(\@actions)
420: .$end_page
421: );
422: }
423:
424: # ------------------------------------------------------------------ Rerouting!
425:
426: sub reroute {
427: my ($r) = @_;
428: &Apache::loncommon::content_type($r,'text/html');
429: $r->send_http_header;
430: my $msg='<b>'.&mt('Sorry ...').'</b><br />'
431: .&mt('Please [_1]log in again[_2].');
432: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
433: }
434:
435: # ---------------------------------------------------------------- Main handler
436:
437: sub handler {
438: my $r = shift;
439: my $londocroot = $r->dir_config('lonDocRoot');
440: # Are we re-routing?
441: if (-e "$londocroot/lon-status/reroute.txt") {
442: &reroute($r);
443: return OK;
444: }
445:
446: &Apache::lonlocal::get_language_handle($r);
447:
448: # -------------------------------- Prevent users from attempting to login twice
449: my $handle = &Apache::lonnet::check_for_valid_session($r);
450: if ($handle ne '') {
451: my $lonidsdir=$r->dir_config('lonIDsDir');
452: if ($handle=~/^publicuser\_/) {
453: # For "public user" - remove it, we apparently really want to login
454: unlink($r->dir_config('lonIDsDir')."/$handle.id");
455: } else {
456: # Indeed, a valid token is found
457: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
458: &Apache::loncommon::content_type($r,'text/html');
459: $r->send_http_header;
460: my $start_page =
461: &Apache::loncommon::start_page('Already logged in');
462: my $end_page =
463: &Apache::loncommon::end_page();
464: my $dest = '/adm/roles';
465: my %form = &get_form_items($r);
466: if ($form{'logtoken'}) {
467: my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
468: $form{'serverid'});
469: unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
470: ($tmpinfo eq 'no_such_host')) {
471: my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
472: $firsturl = &unescape($firsturl);
473: my %info;
474: foreach my $item (@rest) {
475: my ($key,$value) = split(/=/,$item);
476: $info{$key} = &unescape($value);
477: }
478: if ($firsturl ne '') {
479: $info{'firsturl'} = $firsturl;
480: $dest = $firsturl;
481: my $relogin;
482: if ($dest =~ m{^/tiny/$match_domain/\w+$}) {
483: if ($env{'request.course.id'}) {
484: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
485: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
486: my $symb = &Apache::loncommon::symb_from_tinyurl($dest,$cnum,$cdom);
487: if ($symb) {
488: unless (&set_deeplink_login(%info) eq 'ok') {
489: $relogin = 1;
490: }
491: }
492: }
493: if ($relogin) {
494: $r->print(
495: $start_page
496: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
497: .'<p>'.&mt('Please [_1]log out[_2] first, and then try your access again',
498: '<a href="/adm/logout">','</a>')
499: .'</p>'
500: .$end_page);
501: } else {
502: if (($info{'linkprot'}) || ($info{'linkkey'} ne '')) {
503: if (($info{'linkprot'}) && ($info{'linkprotuser'} ne '')) {
504: unless ($info{'linkprotuser'} eq $env{'user.name'}.':'.$env{'user.domain'}) {
505: $r->print(
506: $start_page
507: .'<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>'
508: .'<p>'.&mt('Please [_1]log out[_2] first, and then try following the link again from the other system',
509: '<a href="/adm/logout">','</a>')
510:
511: .'</p>'
512: .$end_page);
513: return OK;
514: }
515: }
516: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
517: unless (($token eq 'con_lost') || ($token eq 'refused') ||
518: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
519: $dest .= (($dest =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
520: }
521: }
522: $r->print(
523: $start_page
524: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
525: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4] first, and then try your access again',
526: '<a href="'.$dest.'">','</a>',
527: '<a href="/adm/logout">','</a>')
528: .'</p>'
529: .$end_page);
530: }
531: return OK;
532: }
533: }
534: }
535: }
536: $r->print(
537: $start_page
538: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
539: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
540: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
541: .'</p>'
542: .$end_page
543: );
544: return OK;
545: }
546: }
547:
548: # ---------------------------------------------------- No valid token, continue
549:
550: my %form = &get_form_items($r);
551: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
552: &failed($r,'Username, password and domain need to be specified.',
553: \%form);
554: return OK;
555: }
556:
557: # split user logging in and "su"-user
558:
559: ($form{'uname'},$form{'suname'},$form{'sudom'})=split(/\:/,$form{'uname'});
560: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
561: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
562: $form{'udom'} = &LONCAPA::clean_domain($form{'udom'});
563: $form{'sudom'} = &LONCAPA::clean_domain($form{'sudom'});
564:
565: my $role = $r->dir_config('lonRole');
566: my $domain = $r->dir_config('lonDefDomain');
567: my $prodir = $r->dir_config('lonUsersDir');
568: my $contact_name = &mt('LON-CAPA helpdesk');
569:
570: # ---------------------------------------- Get the information from login token
571:
572: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
573: $form{'serverid'});
574:
575: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
576: ($tmpinfo eq 'no_such_host')) {
577: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
578: return OK;
579: } else {
580: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
581: $form{'serverid'});
582: if ( $reply ne 'ok' ) {
583: &failed($r,'Session could not be opened.',\%form);
584: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
585: return OK;
586: }
587: }
588:
589: if (!&Apache::lonnet::domain($form{'udom'})) {
590: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
591: return OK;
592: }
593:
594: my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
595: $firsturl = &unescape($firsturl);
596: foreach my $item (@rest) {
597: my ($key,$value) = split(/=/,$item);
598: $form{$key} = &unescape($value);
599: }
600: if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
601: $form{'firsturl'} = $firsturl;
602: }
603: my $upass = $ENV{HTTPS} ? $form{'upass0'}
604: : &Apache::loncommon::des_decrypt($des_key,$form{'upass0'});
605:
606: # ---------------------------------------------------------------- Authenticate
607:
608: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
609: my ($cancreate,$statustocreate) =
610: &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
611: my $defaultauth;
612: if (ref($cancreate) eq 'ARRAY') {
613: if (grep(/^login$/,@{$cancreate})) {
614: $defaultauth = 1;
615: }
616: }
617: my $clientcancheckhost = 1;
618: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
619: $form{'udom'},$defaultauth,
620: $clientcancheckhost);
621:
622: # --------------------------------------------------------------------- Failed?
623:
624: if ($authhost eq 'no_host') {
625: my $pwdverify;
626: if (&Apache::lonnet::homeserver($form{'uname'},$form{'udom'}) eq 'no_host') {
627: my %possunames = &alternate_unames_check($form{'uname'},$form{'udom'});
628: if (keys(%possunames) > 0) {
629: foreach my $rulematch (keys(%possunames)) {
630: my $possuname = $possunames{$rulematch};
631: if (($possuname ne '') && ($possuname =~ /^$match_username$/)) {
632: $authhost=Apache::lonnet::authenticate($possuname,$upass,
633: $form{'udom'},undef,
634: $clientcancheckhost);
635: if (($authhost eq 'no_host') || ($authhost eq 'no_account_on_host')) {
636: next;
637: } elsif (($authhost ne '') && (&Apache::lonnet::hostname($authhost) ne '')) {
638: $pwdverify = 1;
639: &Apache::lonnet::logthis("Authenticated user: $possuname was submitted as: $form{'uname'}");
640: $form{'uname'} = $possuname;
641: last;
642: }
643: }
644: }
645: }
646: }
647: unless ($pwdverify) {
648: &failed($r,'Username and/or password could not be authenticated.',
649: \%form,$authhost);
650: return OK;
651: }
652: } elsif ($authhost eq 'no_account_on_host') {
653: if ($defaultauth) {
654: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
655: unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
656: return OK;
657: }
658: my $start_page =
659: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
660: '',{'no_inline_link' => 1,});
661: my $lonhost = $r->dir_config('lonHostID');
662: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
663: my $contacts =
664: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
665: $form{'udom'},$origmail);
666: my ($contact_email) = split(',',$contacts);
667: my $output =
668: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
669: $domdesc,'',$lonhost,
670: $contact_email,$contact_name,
671: undef,$statustocreate);
672: &Apache::loncommon::content_type($r,'text/html');
673: $r->send_http_header;
674: &Apache::createaccount::print_header($r,$start_page);
675: $r->print('<h3>'.&mt('Account creation').'</h3>'.
676: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
677: $output.&Apache::loncommon::end_page());
678: return OK;
679: } else {
680: &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);
681: return OK;
682: }
683: }
684:
685: if (($firsturl eq '') ||
686: ($firsturl=~/^\/adm\/(logout|remote)/)) {
687: $firsturl='/adm/roles';
688: }
689:
690: my ($hosthere,%sessiondata);
691: if ($form{'iptoken'}) {
692: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
693: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
694: if (($sessiondata{'domain'} eq $form{'udom'}) &&
695: ($sessiondata{'username'} eq $form{'uname'})) {
696: $hosthere = 1;
697: }
698: }
699:
700: # --------------------------------- Are we attempting to login as somebody else?
701: if ($form{'suname'}) {
702: my ($suname,$sudom,$sudomref);
703: $suname = $form{'suname'};
704: $sudom = $form{'udom'};
705: if ($form{'sudom'}) {
706: unless ($sudom eq $form{'sudom'}) {
707: if (&Apache::lonnet::domain($form{'sudom'})) {
708: $sudomref = [$form{'sudom'}];
709: $sudom = $form{'sudom'};
710: }
711: }
712: }
713: # ------------ see if the original user has enough privileges to pull this stunt
714: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'},$sudomref)) {
715: # ---------------------------------------------------- see if the su-user exists
716: unless (&Apache::lonnet::homeserver($suname,$sudom) eq 'no_host') {
717: # ------------------------------ see if the su-user is not too highly privileged
718: if (&Apache::lonnet::privileged($suname,$sudom)) {
719: &Apache::lonnet::logthis('Attempted switch user to privileged user');
720: } else {
721: my $noprivswitch;
722: #
723: # su-user's home server and user's home server must have one of:
724: # (a) same domain
725: # (b) same primary library server for the two domains
726: # (c) same "internet domain" for primary library server(s) for home servers' domains
727: #
728: my $suprim = &Apache::lonnet::domain($sudom,'primary');
729: my $suintdom = &Apache::lonnet::internet_dom($suprim);
730: unless ($sudom eq $form{'udom'}) {
731: my $uprim = &Apache::lonnet::domain($form{'udom'},'primary');
732: my $uintdom = &Apache::lonnet::internet_dom($uprim);
733: unless ($suprim eq $uprim) {
734: unless ($suintdom eq $uintdom) {
735: &Apache::lonnet::logthis('Attempted switch user '
736: .'to user with different "internet domain".');
737: $noprivswitch = 1;
738: }
739: }
740: }
741:
742: unless ($noprivswitch) {
743: #
744: # server where log-in occurs must have same "internet domain" as su-user's home
745: # server
746: #
747: my $lonhost = $r->dir_config('lonHostID');
748: my $hostintdom = &Apache::lonnet::internet_dom($lonhost);
749: if ($hostintdom ne $suintdom) {
750: &Apache::lonnet::logthis('Attempted switch user on a '
751: .'server with a different "internet domain".');
752: } else {
753:
754: # -------------------------------------------------------- actually switch users
755:
756: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.
757: $form{'udom'}.' logging in as '.$suname.':'.$sudom);
758: $form{'uname'}=$suname;
759: if ($form{'udom'} ne $sudom) {
760: $form{'udom'}=$sudom;
761: }
762: }
763: }
764: }
765: }
766: } else {
767: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
768: }
769: }
770:
771: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
772: if (($form{'linkprot'}) && ($form{'linkprotuser'} ne '')) {
773: unless($form{'linkprotuser'} eq $form{'uname'}.':'.$form{'udom'}) {
774: delete($form{'udom'});
775: delete($form{'uname'});
776: &failed($r,'Username and/or domain are different to that expected for the link you followed from another system',
777: \%form,$authhost);
778: return OK;
779: }
780: }
781: }
782:
783: my ($is_balancer,$otherserver);
784:
785: unless ($hosthere) {
786: ($is_balancer,$otherserver) =
787: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'},'login');
788: if ($is_balancer) {
789: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
790: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
791: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
792: $otherserver = $found_server;
793: }
794: if ($otherserver eq '') {
795: my $lowest_load;
796: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'});
797: if ($lowest_load > 100) {
798: $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$form{'udom'});
799: }
800: }
801: if ($otherserver ne '') {
802: my @hosts = &Apache::lonnet::current_machine_ids();
803: if (grep(/^\Q$otherserver\E$/,@hosts)) {
804: $hosthere = $otherserver;
805: }
806: }
807: }
808: }
809:
810: if (($is_balancer) && (!$hosthere)) {
811: if ($otherserver) {
812: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
813: \%form);
814: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
815: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
816: $switchto .= '&origurl='.$firsturl;
817: }
818: if ($form{'role'}) {
819: $switchto .= '&role='.$form{'role'};
820: }
821: if ($form{'symb'}) {
822: $switchto .= '&symb='.$form{'symb'};
823: }
824: if ($form{'linkprot'}) {
825: $env{'request.linkprot'} = $form{'linkprot'};
826: foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
827: if ($form{$item}) {
828: $env{'request.'.$item} = $form{$item};
829: }
830: }
831: } elsif ($form{'linkkey'} ne '') {
832: $env{'request.linkkey'} = $form{'linkkey'};
833: }
834: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
835: &set_deeplink_login(%form);
836: } elsif ($firsturl eq '/adm/email') {
837: if ($form{'display'} && ($form{'mailrecip'} eq "$form{'uname'}:$form{'udom'}")) {
838: $env{'request.display'} = $form{'display'};
839: $env{'request.mailrecip'} = $form{'mailrecip'};
840: }
841: }
842: $r->internal_redirect($switchto);
843: } else {
844: &Apache::loncommon::content_type($r,'text/html');
845: $r->send_http_header;
846: $r->print(&noswitch());
847: }
848: return OK;
849: } else {
850: if (!&check_can_host($r,\%form,$authhost)) {
851: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
852: if ($otherserver) {
853: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
854: \%form);
855: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
856: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
857: $switchto .= '&origurl='.$firsturl;
858: }
859: if ($form{'role'}) {
860: $switchto .= '&role='.$form{'role'};
861: }
862: if ($form{'symb'}) {
863: $switchto .= '&symb='.$form{'symb'};
864: }
865: if ($form{'linkprot'}) {
866: $env{'request.linkprot'} = $form{'linkprot'};
867: foreach my $item ('linkprotuser','linkprotexit','linkprotpbid','linkprotpburl') {
868: if ($form{$item}) {
869: $env{'request.'.$item} = $form{$item};
870: }
871: }
872: } elsif ($form{'linkkey'} ne '') {
873: $env{'request.linkkey'} = $form{'linkkey'};
874: }
875: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
876: &set_deeplink_login(%form);
877: } elsif ($firsturl eq '/adm/email') {
878: if ($form{'display'} && ($form{'mailrecip'} eq "$form{'uname'}:$form{'udom'}")) {
879: $env{'request.display'} = $form{'display'};
880: $env{'request.mailrecip'} = $form{'mailrecip'};
881: }
882: }
883: $r->internal_redirect($switchto);
884: } else {
885: &Apache::loncommon::content_type($r,'text/html');
886: $r->send_http_header;
887: $r->print(&noswitch());
888: }
889: return OK;
890: }
891:
892: # ------------------------------------------------------- Do the load balancing
893:
894: # ---------------------------------------------------------- Determine own load
895: my $loadlim = $r->dir_config('lonLoadLim');
896: my $loadavg;
897: {
898: my $loadfile=Apache::File->new('/proc/loadavg');
899: $loadavg=<$loadfile>;
900: }
901: $loadavg =~ s/\s.*//g;
902: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
903: my $userloadpercent=&Apache::lonnet::userload();
904:
905: # ---------------------------------------------------------- Are we overloaded?
906: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
907: my $unloaded=Apache::lonnet::spareserver($r,$loadpercent,$userloadpercent,1,$form{'udom'});
908: if (!$unloaded) {
909: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
910: }
911: if ($unloaded) {
912: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
913: undef,\%form);
914: if ($form{'linkprot'}) {
915: $env{'request.linkprot'} = $form{'linkprot'};
916: } elsif ($form{'linkkey'} ne '') {
917: $env{'request.linkkey'} = $form{'linkkey'};
918: }
919: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
920: &set_deeplink_login(%form);
921: } elsif ($firsturl eq '/adm/email') {
922: if ($form{'display'} && ($form{'mailrecip'} eq "$form{'uname'}:$form{'udom'}")) {
923: $env{'request.display'} = $form{'display'};
924: $env{'request.mailrecip'} = $form{'mailrecip'};
925: }
926: }
927: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
928: return OK;
929: }
930: }
931: if (($is_balancer) && ($hosthere)) {
932: $form{'noloadbalance'} = $hosthere;
933: }
934: my $extra_env;
935: if (($hosthere) && ($sessiondata{'sessionserver'} ne '')) {
936: if ($sessiondata{'origurl'} ne '') {
937: $firsturl = $sessiondata{'origurl'};
938: $form{'firsturl'} = $sessiondata{'origurl'};
939: my @names = ('role','symb','linkprot','linkkey');
940: foreach my $item (@names) {
941: if ($sessiondata{$item} ne '') {
942: $form{$item} = $sessiondata{$item};
943: }
944: }
945: if ($sessiondata{'origurl'} eq '/adm/email') {
946: if (($sessiondata{'display'}) && ($sessiondata{'mailrecip'})) {
947: if (&unescape($sessiondata{'mailrecip'}) eq "$form{'uname'}:$form{'udom'}") {
948: $form{'display'} = &unescape($sessiondata{'display'});
949: $form{'mailrecip'} = &unescape($sessiondata{'mailrecip'});
950: }
951: }
952: }
953: }
954: }
955: if ($form{'linkprot'}) {
956: my ($linkprotector,$uri) = split(/:/,$form{'linkprot'},2);
957: if ($linkprotector) {
958: $extra_env = {'user.linkprotector' => $linkprotector,
959: 'user.linkproturi' => $uri};
960: }
961: } elsif ($form{'linkkey'} ne '') {
962: $extra_env = {'user.deeplinkkey' => $form{'linkkey'},
963: 'user.keyedlinkuri' => $form{'firsturl'}};
964: }
965: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
966: &set_deeplink_login(%form);
967: if ($form{'linkprot'}) {
968: if (ref($extra_env) eq 'HASH') {
969: %{$extra_env} = ( %{$extra_env}, 'request.linkprot' => $form{'linkprot'} );
970: } else {
971: $extra_env = {'request.linkprot' => $form{'linkprot'}};
972: }
973: if ($form{'linkprotexit'}) {
974: $extra_env->{'request.linkprotexit'} = $form{'linkprotexit'};
975: }
976: if ($form{'linkprotpbid'}) {
977: $extra_env->{'request.linkprotpbid'} = $form{'linkprotpbid'};
978: }
979: if ($form{'linkprotpburl'}) {
980: $extra_env->{'request.linkprotpburl'} = $form{'linkprotpburl'};
981: }
982: } elsif ($form{'linkkey'} ne '') {
983: if (ref($extra_env) eq 'HASH') {
984: %{$extra_env} = ( %{$extra_env}, 'request.linkkey' => $form{'linkkey'} );
985: } else {
986: $extra_env = {'request.linkkey' => $form{'linkkey'}};
987: }
988: }
989: if ($env{'request.deeplink.login'}) {
990: if (ref($extra_env) eq 'HASH') {
991: %{$extra_env} = ( %{$extra_env}, 'request.deeplink.login' => $form{'firsturl'} );
992: } else {
993: $extra_env = {'request.deeplink.login' => $form{'firsturl'}};
994: }
995: }
996: }
997: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,$extra_env,
998: \%form);
999: return OK;
1000: }
1001: }
1002:
1003: sub get_form_items {
1004: my ($r) = @_;
1005: my $buffer;
1006: if ($r->header_in('Content-length') > 0) {
1007: $r->read($buffer,$r->header_in('Content-length'),0);
1008: }
1009: my %form;
1010: foreach my $pair (split(/&/,$buffer)) {
1011: my ($name,$value) = split(/=/,$pair);
1012: $value =~ tr/+/ /;
1013: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1014: $form{$name}=$value;
1015: }
1016: return %form;
1017: }
1018:
1019: sub set_deeplink_login {
1020: my (%form) = @_;
1021: my $disallow;
1022: if ($form{'firsturl'} =~ m{^/tiny/($match_domain)/\w+$}) {
1023: my $cdom = $1;
1024: my ($cnum,$symb) = &Apache::loncommon::symb_from_tinyurl($form{'firsturl'},'',$cdom);
1025: if ($symb) {
1026: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
1027: my $deeplink;
1028: if ($symb =~ /\.(page|sequence)$/) {
1029: my $mapname = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($symb))[2]);
1030: my $navmap = Apache::lonnavmaps::navmap->new();
1031: if (ref($navmap)) {
1032: $deeplink = $navmap->get_mapparam(undef,$mapname,'0.deeplink');
1033: }
1034: } else {
1035: $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$symb);
1036: }
1037: if ($deeplink ne '') {
1038: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
1039: if (($protect ne 'none') && ($protect ne '')) {
1040: my ($acctype,$item) = split(/:/,$protect);
1041: if ($acctype =~ /lti(c|d)$/) {
1042: unless ($form{'linkprot'} eq $item.$1.':'.$env{'request.deeplink.login'}) {
1043: $disallow = 1;
1044: }
1045: } elsif ($acctype eq 'key') {
1046: unless ($form{'linkkey'} eq $item) {
1047: $disallow = 1;
1048: }
1049: }
1050: }
1051: }
1052: unless ($disallow) {
1053: $env{'request.deeplink.login'} = $form{'firsturl'};
1054: }
1055: } else {
1056: $env{'request.deeplink.login'} = $form{'firsturl'};
1057: }
1058: }
1059: }
1060: if ($disallow) {
1061: return;
1062: }
1063: return 'ok';
1064: }
1065:
1066: sub set_retry_token {
1067: my ($form,$lonhost,$querystr) = @_;
1068: if (ref($form) eq 'HASH') {
1069: my ($firsturl,$token,$extras,@names);
1070: @names = ('role','symb','linkprotuser','linkprotexit','linkprot','linkkey','iptoken','linkprotpbid','linkprotpburl');
1071: foreach my $name (@names) {
1072: if ($form->{$name} ne '') {
1073: $extras .= '&'.$name.'='.&escape($form->{$name});
1074: last if ($name eq 'linkprot');
1075: }
1076: }
1077: my $firsturl = $form->{'firsturl'};
1078: if (($firsturl ne '') || ($extras ne '')) {
1079: $extras .= ':retry';
1080: $token = &Apache::lonnet::reply('tmpput:'.&escape($firsturl).
1081: $extras,$lonhost);
1082: if (($token eq 'con_lost') || ($token eq 'no_such_host')) {
1083: return 'fail';
1084: } else {
1085: if (ref($querystr)) {
1086: $$querystr = 'retry='.$token;
1087: }
1088: return 'ok';
1089: }
1090: }
1091: }
1092: return;
1093: }
1094:
1095: sub check_can_host {
1096: my ($r,$form,$authhost,$domdesc) = @_;
1097: return unless (ref($form) eq 'HASH');
1098: my $canhost = 1;
1099: my $lonhost = $r->dir_config('lonHostID');
1100: my $udom = $form->{'udom'};
1101: my @intdoms;
1102: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
1103: if (ref($internet_names) eq 'ARRAY') {
1104: @intdoms = @{$internet_names};
1105: }
1106: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1107: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1108: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1109: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
1110: my $hostname = &Apache::lonnet::hostname($lonhost);
1111: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
1112: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1113: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1114: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
1115: my $loncaparev;
1116: if ($authhost eq 'no_account_on_host') {
1117: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1118: } else {
1119: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1120: }
1121: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
1122: $udomdefaults{'remotesessions'},
1123: $defdomdefaults{'hostedsessions'});
1124: }
1125: unless ($canhost) {
1126: if ($authhost eq 'no_account_on_host') {
1127: my $checkloginvia = 1;
1128: my ($login_host,$hostname) =
1129: &Apache::lonnet::choose_server($udom,$checkloginvia);
1130: &Apache::loncommon::content_type($r,'text/html');
1131: $r->send_http_header;
1132: if ($login_host ne '') {
1133: my $protocol = $Apache::lonnet::protocol{$login_host};
1134: $protocol = 'http' if ($protocol ne 'https');
1135: my $alias = &Apache::lonnet::use_proxy_alias($r,$login_host);
1136: $hostname = $alias if ($alias ne '');
1137: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
1138: #FIXME Should preserve where user was going and linkprot by setting ltoken at $login_host
1139: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
1140: '<h3>'.&mt('Account creation').'</h3>'.
1141: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
1142: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
1143: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
1144: &Apache::loncommon::end_page());
1145: } else {
1146: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
1147: '<h3>'.&mt('Account creation unavailable').'</h3>'.
1148: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
1149: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
1150: &Apache::loncommon::end_page());
1151: }
1152: } else {
1153: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
1154: $form);
1155: if ($form->{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
1156: $env{'request.deeplink.login'} = $form->{'firsturl'};
1157: } elsif ($form->{'firsturl'} eq '/adm/email') {
1158: if ($form->{'display'} && ($form->{'mailrecip'} eq $form->{'uname'}.':'.$form->{'udom'})) {
1159: $env{'request.display'} = $form->{'mailrecip'};
1160: $env{'request.mailrecip'} = $form->{'mailrecip'};
1161: }
1162: }
1163: if ($form->{'linkprot'}) {
1164: $env{'request.linkprot'} = $form->{'linkprot'};
1165: } elsif ($form->{'linkkey'} ne '') {
1166: $env{'request.linkkey'} = $form->{'linkkey'};
1167: }
1168: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1169: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
1170: }
1171: }
1172: return $canhost;
1173: }
1174:
1175: sub noswitch {
1176: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
1177: '<h3>'.&mt('Session unavailable').'</h3>'.
1178: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
1179: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
1180: &Apache::loncommon::end_page();
1181: return $result;
1182: }
1183:
1184: sub loginhelpdisplay {
1185: my ($authdomain) = @_;
1186: my $login_help = 1;
1187: my $lang = &Apache::lonlocal::current_language();
1188: if ($login_help) {
1189: my $dom = $authdomain;
1190: if ($dom eq '') {
1191: $dom = &Apache::lonnet::default_login_domain();
1192: }
1193: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
1194: my $loginhelp_url;
1195: if ($lang) {
1196: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
1197: if ($loginhelp_url ne '') {
1198: return $loginhelp_url;
1199: }
1200: }
1201: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
1202: if ($loginhelp_url ne '') {
1203: return $loginhelp_url;
1204: } else {
1205: return '/adm/loginproblems.html';
1206: }
1207: }
1208: return;
1209: }
1210:
1211: sub alternate_unames_check {
1212: my ($uname,$udom) = @_;
1213: my %possunames;
1214: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1215: if (ref($domdefs{'unamemap_rule'}) eq 'ARRAY') {
1216: if (@{$domdefs{'unamemap_rule'}} > 0) {
1217: %possunames =
1218: &Apache::lonnet::inst_rulecheck($udom,$uname,undef,
1219: 'unamemap',$domdefs{'unamemap_rule'});
1220: }
1221: }
1222: return %possunames;
1223: }
1224:
1225: 1;
1226: __END__
1227:
1228:
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