1: # The LearningOnline Network
2: # User Authentication Module
3: #
4: # $Id: lonauth.pm,v 1.121.2.24.2.6 2023/01/23 00:38:50 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 Fcntl qw(:flock);
40: use Apache::lonlocal;
41: use Apache::File();
42: use HTML::Entities;
43: use Digest::MD5;
44: use CGI::Cookie();
45:
46: # ------------------------------------------------------------ Successful login
47: sub success {
48: my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
49: $form,$cid,$expirepub,$write_to_opener) = @_;
50:
51: # ------------------------------------------------------------ Get cookie ready
52: my $cookie =
53: &Apache::loncommon::init_user_environment($r, $username, $domain,
54: $authhost, $form,
55: {'extra_env' => $extra_env,});
56:
57: my $public=($username eq 'public' && $domain eq 'public');
58:
59: if ($public or $lowerurl eq 'noredirect') { return $cookie; }
60:
61: # -------------------------------------------------------------------- Log this
62:
63: my $ip = &Apache::lonnet::get_requestor_ip();
64: &Apache::lonnet::log($domain,$username,$authhost,
65: "Login $ip");
66:
67: # ------------------------------------------------- Check for critical messages
68:
69: my @what=&Apache::lonnet::dump('critical',$domain,$username);
70: if ($what[0]) {
71: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
72: $lowerurl='/adm/email?critical=display';
73: }
74: }
75:
76: # ------------------------------------------------------------ Get cookies ready
77: my ($securecookie,$defaultcookie);
78: my $ssl = $r->subprocess_env('https');
79: if ($ssl) {
80: $securecookie="lonSID=$cookie; path=/; HttpOnly; secure";
81: my $lonidsdir=$r->dir_config('lonIDsDir');
82: if (($lonidsdir) && (-e "$lonidsdir/$cookie.id")) {
83: my $linkname=substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 32).'_linked';
84: if (-e "$lonidsdir/$linkname.id") {
85: unlink("$lonidsdir/$linkname.id");
86: }
87: my $made_symlink = eval { symlink("$lonidsdir/$cookie.id",
88: "$lonidsdir/$linkname.id"); 1 };
89: if ($made_symlink) {
90: $defaultcookie = "lonLinkID=$linkname; path=/; HttpOnly;";
91: &Apache::lonnet::appenv({'user.linkedenv' => $linkname});
92: }
93: }
94: } else {
95: $defaultcookie = "lonID=$cookie; path=/; HttpOnly;";
96: }
97: # -------------------------------------------------------- Menu script and info
98: my $destination = $lowerurl;
99:
100: if (defined($form->{role})) {
101: my $envkey = 'user.role.'.$form->{role};
102: my $now=time;
103: my $then=$env{'user.login.time'};
104: my $refresh=$env{'user.refresh.time'};
105: my $update=$env{'user.update.time'};
106: if (!$update) {
107: $update = $then;
108: }
109: if (exists($env{$envkey})) {
110: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
111: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
112: \$trolecode,\$tstatus,\$tstart,\$tend);
113: if ($tstatus eq 'is') {
114: $destination .= ($destination =~ /\?/) ? '&' : '?';
115: my $newrole = &HTML::Entities::encode($form->{role},'"<>&');
116: $destination .= 'selectrole=1&'.$newrole.'=1';
117: }
118: }
119: } elsif (defined($form->{display})) {
120: if ($destination =~ m{^/adm/email($|\?)}) {
121: $destination .= ($destination =~ /\?/) ? '&' : '?' .'display='.&escape($form->{display});
122: }
123: }
124: if (defined($form->{symb})) {
125: my $destsymb = $form->{symb};
126: my $encrypted;
127: if ($destsymb =~ m{^/enc/}) {
128: $encrypted = 1;
129: if ($cid) {
130: $destsymb = &Apache::lonenc::unencrypted($destsymb,$cid);
131: }
132: }
133: $destination .= ($destination =~ /\?/) ? '&' : '?';
134: if ($destsymb =~ /___/) {
135: my ($map,$resid,$desturl)=split(/___/,$destsymb);
136: $desturl = &Apache::lonnet::clutter($desturl);
137: if ($encrypted) {
138: $desturl = &Apache::lonenc::encrypted($desturl,1,$cid);
139: $destsymb = $form->{symb};
140: }
141: $desturl = &HTML::Entities::encode($desturl,'"<>&');
142: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
143: $destination .= 'destinationurl='.$desturl.
144: '&destsymb='.$destsymb;
145: } elsif (!$encrypted) {
146: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
147: $destination .= 'destinationurl='.$destsymb;
148: }
149: }
150: if ($destination =~ m{^/adm/roles}) {
151: $destination .= ($destination =~ /\?/) ? '&' : '?';
152: $destination .= 'source=login';
153: }
154:
155: my $brcrum = [{'href' => '',
156: 'text' => 'Successful Login'},];
157: my $args = {'no_inline_link' => 1,
158: 'bread_crumbs' => $brcrum,};
159: if (($env{'request.deeplink.login'} eq $lowerurl) &&
160: (($env{'request.linkprot'}) || ($env{'request.linkkey'} ne ''))) {
161: my %info;
162: if ($env{'request.linkprot'}) {
163: $info{'linkprot'} = $env{'request.linkprot'};
164: foreach my $item ('linkprotuser','linkprotexit') {
165: if ($form->{$item}) {
166: $info{$item} = $form->{$item};
167: }
168: }
169: $args = {'only_body' => 1,};
170: } elsif ($env{'request.linkkey'} ne '') {
171: $info{'linkkey'} = $env{'request.linkkey'};
172: }
173: $info{'origurl'} = $lowerurl;
174: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
175: unless (($token eq 'con_lost') || ($token eq 'refused') ||
176: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
177: $destination .= (($destination =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
178: }
179: }
180: if ($env{'request.deeplink.login'}) {
181: if ($env{'environment.remote'} eq 'on') {
182: &Apache::lonnet::appenv({'environment.remote' => 'off'});
183: }
184: }
185: my $startupremote;
186: if ($write_to_opener) {
187: if ($env{'environment.remote'} eq 'on') {
188: &Apache::lonnet::appenv({'environment.remote' => 'off'});
189: }
190: $args->{'redirect'} = [0,$destination,'',$write_to_opener];
191: } else {
192: $startupremote=&Apache::lonmenu::startupremote($destination);
193: }
194:
195: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
196: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
197: my $setflags=&Apache::lonmenu::setflags();
198: my $maincall=&Apache::lonmenu::maincall();
199: my $start_page=&Apache::loncommon::start_page('Successful Login',
200: $startupremote,$args);
201: my $end_page =&Apache::loncommon::end_page();
202:
203: my $continuelink;
204: if ($env{'environment.remote'} eq 'off') {
205: unless ($write_to_opener) {
206: $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
207: }
208: }
209: # ------------------------------------------------- Output for successful login
210:
211: &Apache::loncommon::content_type($r,'text/html');
212: if ($securecookie) {
213: $r->headers_out->add('Set-cookie' => $securecookie);
214: }
215: if ($defaultcookie) {
216: $r->headers_out->add('Set-cookie' => $defaultcookie);
217: }
218: if ($expirepub) {
219: my $c = new CGI::Cookie(-name => 'lonPubID',
220: -value => '',
221: -expires => '-10y',);
222: $r->headers_out->add('Set-cookie' => $c);
223: }
224: $r->send_http_header;
225:
226: if ($env{'request.linkprot'}) {
227: $r->print(<<END);
228: $start_page
229: <br />$continuelink
230: $end_page
231: END
232: } else {
233: my %lt=&Apache::lonlocal::texthash(
234: 'wel' => 'Welcome',
235: 'pro' => 'Login problems?',
236: );
237: my $loginhelp = &loginhelpdisplay($domain);
238: if ($loginhelp) {
239: $loginhelp = '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
240: }
241:
242: my $welcome = &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>');
243: $r->print(<<ENDSUCCESS);
244: $start_page
245: $setflags
246: $windowinfo
247: <h1>$lt{'wel'}</h1>
248: $welcome
249: $loginhelp
250: $remoteinfo
251: $maincall
252: $continuelink
253: $end_page
254: ENDSUCCESS
255: }
256: return;
257: }
258:
259: # --------------------------------------------------------------- Failed login!
260:
261: sub failed {
262: my ($r,$message,$form,$authhost) = @_;
263: (undef,undef,undef,my $clientmathml,my $clientunicode) =
264: &Apache::loncommon::decode_user_agent();
265: my $args = {};
266: if ($clientunicode && !$clientmathml) {
267: $args = {'browser.unicode' => 1};
268: }
269: if ($form->{firsturl} =~ m{^/tiny/$match_domain/\w+$}) {
270: if ($form->{linkprot}) {
271: $args->{only_body} = 1;
272: }
273: }
274:
275: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
276: my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
277: my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
278: if (&Apache::lonnet::domain($udom,'description') eq '') {
279: undef($udom);
280: }
281: my $retry = '/adm/login';
282: if ($uname eq $form->{'uname'}) {
283: $retry .= '?username='.$uname;
284: }
285: if ($udom) {
286: $retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom;
287: }
288: my $lonhost = $r->dir_config('lonHostID');
289: my $querystr;
290: my $result = &set_retry_token($form,$lonhost,\$querystr);
291: if ($result eq 'fail') {
292: if (exists($form->{role})) {
293: my $role = &Apache::loncommon::cleanup_html($form->{role});
294: if ($role ne '') {
295: $retry .= (($retry=~/\?/)?'&':'?').'role='.$role;
296: }
297: }
298: if (exists($form->{symb})) {
299: my $symb = &Apache::loncommon::cleanup_html($form->{symb});
300: if ($symb ne '') {
301: $retry .= (($retry=~/\?/)?'&':'?').'symb='.$symb;
302: }
303: }
304: if (exists($form->{firsturl})) {
305: my $firsturl = &Apache::loncommon::cleanup_html($form->{firsturl});
306: if ($firsturl ne '') {
307: $retry .= (($retry=~/\?/)?'&':'?').'firsturl='.$firsturl;
308: if ($form->{firsturl} =~ m{^/tiny/$match_domain/\w+$}) {
309: unless (exists($form->{linkprot})) {
310: if (exists($form->{linkkey})) {
311: $retry .= 'linkkey='.$form->{linkkey};
312: }
313: }
314: }
315: }
316: }
317: if (exists($form->{linkprot})) {
318: my %info = (
319: 'linkprot' => $form->{'linkprot'},
320: );
321: foreach my $item ('linkprotuser','linkprotexit') {
322: if ($form->{$item} ne '') {
323: $info{$item} = $form->{$item};
324: }
325: }
326: my $ltoken = &Apache::lonnet::tmpput(\%info,
327: $r->dir_config('lonHostID'),'retry');
328: if ($ltoken) {
329: $retry .= (($retry =~ /\?/) ? '&' : '?').'ltoken='.$ltoken;
330: }
331: }
332: } elsif ($querystr ne '') {
333: $retry .= (($retry=~/\?/)?'&':'?').$querystr;
334: }
335: my $end_page = &Apache::loncommon::end_page();
336: &Apache::loncommon::content_type($r,'text/html');
337: $r->send_http_header;
338: my @actions =
339: (&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
340: my $loginhelp = &loginhelpdisplay($udom);
341: if ($loginhelp) {
342: push(@actions, '<a href="'.$loginhelp.'">'.&mt('Login problems?').'</a>');
343: }
344: #FIXME: link to helpdesk might be added here
345:
346: $r->print(
347: $start_page
348: .'<h2>'.&mt('Sorry ...').'</h2>'
349: .&Apache::lonhtmlcommon::confirm_success(&mt($message),1).'<br /><br />'
350: .&Apache::lonhtmlcommon::actionbox(\@actions)
351: .$end_page
352: );
353: }
354:
355: # ------------------------------------------------------------------ Rerouting!
356:
357: sub reroute {
358: my ($r) = @_;
359: &Apache::loncommon::content_type($r,'text/html');
360: $r->send_http_header;
361: my $msg='<b>'.&mt('Sorry ...').'</b><br />'
362: .&mt('Please [_1]log in again[_2].');
363: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
364: }
365:
366: # ---------------------------------------------------------------- Main handler
367:
368: sub handler {
369: my $r = shift;
370: my $londocroot = $r->dir_config('lonDocRoot');
371: # Are we re-routing?
372: if (-e "$londocroot/lon-status/reroute.txt") {
373: &reroute($r);
374: return OK;
375: }
376:
377: &Apache::lonlocal::get_language_handle($r);
378:
379: # -------------------------------- Prevent users from attempting to login twice
380: my $handle = &Apache::lonnet::check_for_valid_session($r);
381: if ($handle ne '') {
382: my $lonidsdir=$r->dir_config('lonIDsDir');
383: if ($handle=~/^publicuser\_/) {
384: # For "public user" - remove it, we apparently really want to login
385: unlink($r->dir_config('lonIDsDir')."/$handle.id");
386: } else {
387: # Indeed, a valid token is found
388: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
389: &Apache::loncommon::content_type($r,'text/html');
390: $r->send_http_header;
391: my $start_page =
392: &Apache::loncommon::start_page('Already logged in');
393: my $end_page =
394: &Apache::loncommon::end_page();
395: my $dest = '/adm/roles';
396: my %form = &get_form_items($r);
397: if ($form{'logtoken'}) {
398: my $tmpinfo = &Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
399: $form{'serverid'});
400: unless (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
401: ($tmpinfo eq 'no_such_host')) {
402: my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
403: $firsturl = &unescape($firsturl);
404: my %info;
405: foreach my $item (@rest) {
406: my ($key,$value) = split(/=/,$item);
407: $info{$key} = &unescape($value);
408: }
409: if ($firsturl ne '') {
410: $info{'firsturl'} = $firsturl;
411: $dest = $firsturl;
412: my $relogin;
413: if ($dest =~ m{^/tiny/$match_domain/\w+$}) {
414: if ($env{'request.course.id'}) {
415: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
416: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
417: my $symb = &Apache::loncommon::symb_from_tinyurl($dest,$cnum,$cdom);
418: if ($symb) {
419: unless (&set_deeplink_login(%info) eq 'ok') {
420: $relogin = 1;
421: }
422: }
423: }
424: if ($relogin) {
425: $r->print(
426: $start_page
427: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
428: .'<p>'.&mt('Please [_1]log out[_2] first, and then try your access again',
429: '<a href="/adm/logout">','</a>')
430: .'</p>'
431: .$end_page);
432: } else {
433: if (($info{'linkprot'}) || ($info{'linkkey'} ne '')) {
434: if (($info{'linkprot'}) && ($info{'linkprotuser'} ne '')) {
435: unless ($info{'linkprotuser'} eq $env{'user.name'}.':'.$env{'user.domain'}) {
436: $r->print(
437: $start_page
438: .'<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>'
439: .'<p>'.&mt('Please [_1]log out[_2] first, and then try following the link again from the other system',
440: '<a href="/adm/logout">','</a>')
441:
442: .'</p>'
443: .$end_page);
444: return OK;
445: }
446: }
447: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
448: unless (($token eq 'con_lost') || ($token eq 'refused') ||
449: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
450: $dest .= (($dest =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
451: }
452: }
453: $r->print(
454: $start_page
455: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
456: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4] first, and then try your access again',
457: '<a href="'.$dest.'">','</a>',
458: '<a href="/adm/logout">','</a>')
459: .'</p>'
460: .$end_page);
461: }
462: return OK;
463: }
464: }
465: }
466: }
467: $r->print(
468: $start_page
469: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
470: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
471: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
472: .'</p>'
473: .$end_page
474: );
475: return OK;
476: }
477: }
478:
479: # ---------------------------------------------------- No valid token, continue
480:
481: my %form = &get_form_items($r);
482: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
483: &failed($r,'Username, password and domain need to be specified.',
484: \%form);
485: return OK;
486: }
487:
488: # split user logging in and "su"-user
489:
490: ($form{'uname'},$form{'suname'},$form{'sudom'})=split(/\:/,$form{'uname'});
491: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
492: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
493: $form{'udom'} = &LONCAPA::clean_domain($form{'udom'});
494: $form{'sudom'} = &LONCAPA::clean_domain($form{'sudom'});
495:
496: my $role = $r->dir_config('lonRole');
497: my $domain = $r->dir_config('lonDefDomain');
498: my $prodir = $r->dir_config('lonUsersDir');
499: my $contact_name = &mt('LON-CAPA helpdesk');
500:
501: # ---------------------------------------- Get the information from login token
502:
503: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
504: $form{'serverid'});
505:
506: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
507: ($tmpinfo eq 'no_such_host')) {
508: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
509: return OK;
510: } else {
511: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
512: $form{'serverid'});
513: if ( $reply ne 'ok' ) {
514: &failed($r,'Session could not be opened.',\%form);
515: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
516: return OK;
517: }
518: }
519:
520: if (!&Apache::lonnet::domain($form{'udom'})) {
521: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
522: return OK;
523: }
524:
525: my ($des_key,$firsturl,@rest)=split(/&/,$tmpinfo);
526: $firsturl = &unescape($firsturl);
527: foreach my $item (@rest) {
528: my ($key,$value) = split(/=/,$item);
529: $form{$key} = &unescape($value);
530: }
531: if ($firsturl =~ m{^/tiny/$match_domain/\w+$}) {
532: $form{'firsturl'} = $firsturl;
533: }
534: my $upass = &Apache::loncommon::des_decrypt($des_key,$form{'upass0'});
535:
536: # ---------------------------------------------------------------- Authenticate
537:
538: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
539: my ($cancreate,$statustocreate) =
540: &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
541: my $defaultauth;
542: if (ref($cancreate) eq 'ARRAY') {
543: if (grep(/^login$/,@{$cancreate})) {
544: $defaultauth = 1;
545: }
546: }
547: my $clientcancheckhost = 1;
548: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
549: $form{'udom'},$defaultauth,
550: $clientcancheckhost);
551:
552: # --------------------------------------------------------------------- Failed?
553:
554: if ($authhost eq 'no_host') {
555: my $pwdverify;
556: if (&Apache::lonnet::homeserver($form{'uname'},$form{'udom'}) eq 'no_host') {
557: my %possunames = &alternate_unames_check($form{'uname'},$form{'udom'});
558: if (keys(%possunames) > 0) {
559: foreach my $rulematch (keys(%possunames)) {
560: my $possuname = $possunames{$rulematch};
561: if (($possuname ne '') && ($possuname =~ /^$match_username$/)) {
562: $authhost=Apache::lonnet::authenticate($possuname,$upass,
563: $form{'udom'},undef,
564: $clientcancheckhost);
565: if (($authhost eq 'no_host') || ($authhost eq 'no_account_on_host')) {
566: next;
567: } elsif (($authhost ne '') && (&Apache::lonnet::hostname($authhost) ne '')) {
568: $pwdverify = 1;
569: &Apache::lonnet::logthis("Authenticated user: $possuname was submitted as: $form{'uname'}");
570: $form{'uname'} = $possuname;
571: last;
572: }
573: }
574: }
575: }
576: }
577: unless ($pwdverify) {
578: &failed($r,'Username and/or password could not be authenticated.',
579: \%form);
580: return OK;
581: }
582: } elsif ($authhost eq 'no_account_on_host') {
583: if ($defaultauth) {
584: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
585: unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
586: return OK;
587: }
588: my $start_page =
589: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
590: '',{'no_inline_link' => 1,});
591: my $lonhost = $r->dir_config('lonHostID');
592: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
593: my $contacts =
594: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
595: $form{'udom'},$origmail);
596: my ($contact_email) = split(',',$contacts);
597: my $output =
598: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
599: $domdesc,'',$lonhost,
600: $contact_email,$contact_name,
601: undef,$statustocreate);
602: &Apache::loncommon::content_type($r,'text/html');
603: $r->send_http_header;
604: &Apache::createaccount::print_header($r,$start_page);
605: $r->print('<h3>'.&mt('Account creation').'</h3>'.
606: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
607: $output.&Apache::loncommon::end_page());
608: return OK;
609: } else {
610: &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);
611: return OK;
612: }
613: }
614:
615: if (($firsturl eq '') ||
616: ($firsturl=~/^\/adm\/(logout|remote)/)) {
617: $firsturl='/adm/roles';
618: }
619:
620: my ($hosthere,%sessiondata);
621: if ($form{'iptoken'}) {
622: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
623: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
624: if (($sessiondata{'domain'} eq $form{'udom'}) &&
625: ($sessiondata{'username'} eq $form{'uname'})) {
626: $hosthere = 1;
627: }
628: }
629:
630: # --------------------------------- Are we attempting to login as somebody else?
631: if ($form{'suname'}) {
632: my ($suname,$sudom,$sudomref);
633: $suname = $form{'suname'};
634: $sudom = $form{'udom'};
635: if ($form{'sudom'}) {
636: unless ($sudom eq $form{'sudom'}) {
637: if (&Apache::lonnet::domain($form{'sudom'})) {
638: $sudomref = [$form{'sudom'}];
639: $sudom = $form{'sudom'};
640: }
641: }
642: }
643: # ------------ see if the original user has enough privileges to pull this stunt
644: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'},$sudomref)) {
645: # ---------------------------------------------------- see if the su-user exists
646: unless (&Apache::lonnet::homeserver($suname,$sudom) eq 'no_host') {
647: # ------------------------------ see if the su-user is not too highly privileged
648: if (&Apache::lonnet::privileged($suname,$sudom)) {
649: &Apache::lonnet::logthis('Attempted switch user to privileged user');
650: } else {
651: my $noprivswitch;
652: #
653: # su-user's home server and user's home server must have one of:
654: # (a) same domain
655: # (b) same primary library server for the two domains
656: # (c) same "internet domain" for primary library server(s) for home servers' domains
657: #
658: my $suprim = &Apache::lonnet::domain($sudom,'primary');
659: my $suintdom = &Apache::lonnet::internet_dom($suprim);
660: unless ($sudom eq $form{'udom'}) {
661: my $uprim = &Apache::lonnet::domain($form{'udom'},'primary');
662: my $uintdom = &Apache::lonnet::internet_dom($uprim);
663: unless ($suprim eq $uprim) {
664: unless ($suintdom eq $uintdom) {
665: &Apache::lonnet::logthis('Attempted switch user '
666: .'to user with different "internet domain".');
667: $noprivswitch = 1;
668: }
669: }
670: }
671:
672: unless ($noprivswitch) {
673: #
674: # server where log-in occurs must have same "internet domain" as su-user's home
675: # server
676: #
677: my $lonhost = $r->dir_config('lonHostID');
678: my $hostintdom = &Apache::lonnet::internet_dom($lonhost);
679: if ($hostintdom ne $suintdom) {
680: &Apache::lonnet::logthis('Attempted switch user on a '
681: .'server with a different "internet domain".');
682: } else {
683:
684: # -------------------------------------------------------- actually switch users
685:
686: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.
687: $form{'udom'}.' logging in as '.$suname.':'.$sudom);
688: $form{'uname'}=$suname;
689: if ($form{'udom'} ne $sudom) {
690: $form{'udom'}=$sudom;
691: }
692: }
693: }
694: }
695: }
696: } else {
697: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
698: }
699: }
700:
701: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
702: if (($form{'linkprot'}) && ($form{'linkprotuser'} ne '')) {
703: unless($form{'linkprotuser'} eq $form{'uname'}.':'.$form{'udom'}) {
704: delete($form{'udom'});
705: delete($form{'uname'});
706: &failed($r,'Username and/or domain are different to that expected for the link you followed from another system',
707: \%form,$authhost);
708: return OK;
709: }
710: }
711: }
712:
713: my ($is_balancer,$otherserver);
714:
715: unless ($hosthere) {
716: ($is_balancer,$otherserver) =
717: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'},'login');
718: if ($is_balancer) {
719: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
720: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
721: if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
722: $otherserver = $found_server;
723: }
724: if ($otherserver eq '') {
725: my $lowest_load;
726: ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'});
727: if ($lowest_load > 100) {
728: $otherserver = &Apache::lonnet::spareserver($r,$lowest_load,$lowest_load,1,$form{'udom'});
729: }
730: }
731: if ($otherserver ne '') {
732: my @hosts = &Apache::lonnet::current_machine_ids();
733: if (grep(/^\Q$otherserver\E$/,@hosts)) {
734: $hosthere = $otherserver;
735: }
736: }
737: }
738: }
739:
740: if (($is_balancer) && (!$hosthere)) {
741: if ($otherserver) {
742: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
743: \%form);
744: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
745: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
746: $switchto .= '&origurl='.$firsturl;
747: }
748: if ($form{'role'}) {
749: $switchto .= '&role='.$form{'role'};
750: }
751: if ($form{'symb'}) {
752: $switchto .= '&symb='.$form{'symb'};
753: }
754: if ($form{'linkprot'}) {
755: $env{'request.linkprot'} = $form{'linkprot'};
756: foreach my $item ('linkprotuser','linkprotexit') {
757: if ($form{$item}) {
758: $env{'request.'.$item} = $form{$item};
759: }
760: }
761: } elsif ($form{'linkkey'} ne '') {
762: $env{'request.linkkey'} = $form{'linkkey'};
763: }
764: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
765: &set_deeplink_login(%form);
766: } elsif ($firsturl eq '/adm/email') {
767: if ($form{'display'} && ($form{'mailrecip'} eq "$form{'uname'}:$form{'udom'}")) {
768: $env{'request.display'} = $form{'display'};
769: $env{'request.mailrecip'} = $form{'mailrecip'};
770: }
771: }
772: $r->internal_redirect($switchto);
773: } else {
774: &Apache::loncommon::content_type($r,'text/html');
775: $r->send_http_header;
776: $r->print(&noswitch());
777: }
778: return OK;
779: } else {
780: if (!&check_can_host($r,\%form,$authhost)) {
781: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
782: if ($otherserver) {
783: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
784: \%form);
785: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
786: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
787: $switchto .= '&origurl='.$firsturl;
788: }
789: if ($form{'role'}) {
790: $switchto .= '&role='.$form{'role'};
791: }
792: if ($form{'symb'}) {
793: $switchto .= '&symb='.$form{'symb'};
794: }
795: if ($form{'linkprot'}) {
796: $env{'request.linkprot'} = $form{'linkprot'};
797: foreach my $item ('linkprotuser','linkprotexit') {
798: if ($form{$item}) {
799: $env{'request.'.$item} = $form{$item};
800: }
801: }
802: } elsif ($form{'linkkey'} ne '') {
803: $env{'request.linkkey'} = $form{'linkkey'};
804: }
805: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
806: &set_deeplink_login(%form);
807: } elsif ($firsturl eq '/adm/email') {
808: if ($form{'display'} && ($form{'mailrecip'} eq "$form{'uname'}:$form{'udom'}")) {
809: $env{'request.display'} = $form{'display'};
810: $env{'request.mailrecip'} = $form{'mailrecip'};
811: }
812: }
813: $r->internal_redirect($switchto);
814: } else {
815: &Apache::loncommon::content_type($r,'text/html');
816: $r->send_http_header;
817: $r->print(&noswitch());
818: }
819: return OK;
820: }
821:
822: # ------------------------------------------------------- Do the load balancing
823:
824: # ---------------------------------------------------------- Determine own load
825: my $loadlim = $r->dir_config('lonLoadLim');
826: my $loadavg;
827: {
828: my $loadfile=Apache::File->new('/proc/loadavg');
829: $loadavg=<$loadfile>;
830: }
831: $loadavg =~ s/\s.*//g;
832: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
833: my $userloadpercent=&Apache::lonnet::userload();
834:
835: # ---------------------------------------------------------- Are we overloaded?
836: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
837: my $unloaded=Apache::lonnet::spareserver($r,$loadpercent,$userloadpercent,1,$form{'udom'});
838: if (!$unloaded) {
839: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
840: }
841: if ($unloaded) {
842: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
843: undef,\%form);
844: if ($form{'linkprot'}) {
845: $env{'request.linkprot'} = $form{'linkprot'};
846: } elsif ($form{'linkkey'} ne '') {
847: $env{'request.linkkey'} = $form{'linkkey'};
848: }
849: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
850: &set_deeplink_login(%form);
851: } elsif ($firsturl eq '/adm/email') {
852: if ($form{'display'} && ($form{'mailrecip'} eq "$form{'uname'}:$form{'udom'}")) {
853: $env{'request.display'} = $form{'display'};
854: $env{'request.mailrecip'} = $form{'mailrecip'};
855: }
856: }
857: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
858: return OK;
859: }
860: }
861: if (($is_balancer) && ($hosthere)) {
862: $form{'noloadbalance'} = $hosthere;
863: }
864: my $extra_env;
865: if (($hosthere) && ($sessiondata{'sessionserver'} ne '')) {
866: if ($sessiondata{'origurl'} ne '') {
867: $firsturl = $sessiondata{'origurl'};
868: $form{'firsturl'} = $sessiondata{'origurl'};
869: my @names = ('role','symb','linkprot','linkkey');
870: foreach my $item (@names) {
871: if ($sessiondata{$item} ne '') {
872: $form{$item} = $sessiondata{$item};
873: }
874: }
875: if ($sessiondata{'origurl'} eq '/adm/email') {
876: if (($sessiondata{'display'}) && ($sessiondata{'mailrecip'})) {
877: if (&unescape($sessiondata{'mailrecip'}) eq "$form{'uname'}:$form{'udom'}") {
878: $form{'display'} = &unescape($sessiondata{'display'});
879: $form{'mailrecip'} = &unescape($sessiondata{'mailrecip'});
880: }
881: }
882: }
883: }
884: }
885: if ($form{'linkprot'}) {
886: my ($linkprotector,$uri) = split(/:/,$form{'linkprot'},2);
887: if ($linkprotector) {
888: $extra_env = {'user.linkprotector' => $linkprotector,
889: 'user.linkproturi' => $uri};
890: }
891: } elsif ($form{'linkkey'} ne '') {
892: $extra_env = {'user.deeplinkkey' => $form{'linkkey'},
893: 'user.keyedlinkuri' => $form{'firsturl'}};
894: }
895: if ($form{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
896: &set_deeplink_login(%form);
897: if ($form{'linkprot'}) {
898: if (ref($extra_env) eq 'HASH') {
899: %{$extra_env} = ( %{$extra_env}, 'request.linkprot' => $form{'linkprot'} );
900: } else {
901: $extra_env = {'request.linkprot' => $form{'linkprot'}};
902: }
903: if ($form{'linkprotexit'}) {
904: $extra_env->{'request.linkprotexit'} = $form{'linkprotexit'};
905: }
906: } elsif ($form{'linkkey'} ne '') {
907: if (ref($extra_env) eq 'HASH') {
908: %{$extra_env} = ( %{$extra_env}, 'request.linkkey' => $form{'linkkey'} );
909: } else {
910: $extra_env = {'request.linkkey' => $form{'linkkey'}};
911: }
912: }
913: if ($env{'request.deeplink.login'}) {
914: if (ref($extra_env) eq 'HASH') {
915: %{$extra_env} = ( %{$extra_env}, 'request.deeplink.login' => $form{'firsturl'} );
916: } else {
917: $extra_env = {'request.deeplink.login' => $form{'firsturl'}};
918: }
919: }
920: }
921: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,$extra_env,
922: \%form);
923: return OK;
924: }
925: }
926:
927: sub get_form_items {
928: my ($r) = @_;
929: my $buffer;
930: if ($r->header_in('Content-length') > 0) {
931: $r->read($buffer,$r->header_in('Content-length'),0);
932: }
933: my %form;
934: foreach my $pair (split(/&/,$buffer)) {
935: my ($name,$value) = split(/=/,$pair);
936: $value =~ tr/+/ /;
937: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
938: $form{$name}=$value;
939: }
940: return %form;
941: }
942:
943: sub set_deeplink_login {
944: my (%form) = @_;
945: my $disallow;
946: if ($form{'firsturl'} =~ m{^/tiny/($match_domain)/\w+$}) {
947: my $cdom = $1;
948: my ($cnum,$symb) = &Apache::loncommon::symb_from_tinyurl($form{'firsturl'},'',$cdom);
949: if ($symb) {
950: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
951: my $deeplink;
952: if ($symb =~ /\.(page|sequence)$/) {
953: my $mapname = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($symb))[2]);
954: my $navmap = Apache::lonnavmaps::navmap->new();
955: if (ref($navmap)) {
956: $deeplink = $navmap->get_mapparam(undef,$mapname,'0.deeplink');
957: }
958: } else {
959: $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$symb);
960: }
961: if ($deeplink ne '') {
962: my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink);
963: if (($protect ne 'none') && ($protect ne '')) {
964: my ($acctype,$item) = split(/:/,$protect);
965: if ($acctype =~ /lti(c|d)$/) {
966: unless ($form{'linkprot'} eq $item.$1.':'.$env{'request.deeplink.login'}) {
967: $disallow = 1;
968: }
969: } elsif ($acctype eq 'key') {
970: unless ($form{'linkkey'} eq $item) {
971: $disallow = 1;
972: }
973: }
974: }
975: }
976: unless ($disallow) {
977: $env{'request.deeplink.login'} = $form{'firsturl'};
978: }
979: } else {
980: $env{'request.deeplink.login'} = $form{'firsturl'};
981: }
982: }
983: }
984: if ($disallow) {
985: return;
986: }
987: return 'ok';
988: }
989:
990: sub set_retry_token {
991: my ($form,$lonhost,$querystr) = @_;
992: if (ref($form) eq 'HASH') {
993: my ($firsturl,$token,$extras,@names);
994: @names = ('role','symb','linkprotuser','linkprotexit','linkprot','linkkey','iptoken');
995: foreach my $name (@names) {
996: if ($form->{$name} ne '') {
997: $extras .= '&'.$name.'='.&escape($form->{$name});
998: last if ($name eq 'linkprot');
999: }
1000: }
1001: my $firsturl = $form->{'firsturl'};
1002: if (($firsturl ne '') || ($extras ne '')) {
1003: $extras .= ':retry';
1004: $token = &Apache::lonnet::reply('tmpput:'.&escape($firsturl).
1005: $extras,$lonhost);
1006: if (($token eq 'con_lost') || ($token eq 'no_such_host')) {
1007: return 'fail';
1008: } else {
1009: if (ref($querystr)) {
1010: $$querystr = 'retry='.$token;
1011: }
1012: return 'ok';
1013: }
1014: }
1015: }
1016: return;
1017: }
1018:
1019: sub check_can_host {
1020: my ($r,$form,$authhost,$domdesc) = @_;
1021: return unless (ref($form) eq 'HASH');
1022: my $canhost = 1;
1023: my $lonhost = $r->dir_config('lonHostID');
1024: my $udom = $form->{'udom'};
1025: my @intdoms;
1026: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
1027: if (ref($internet_names) eq 'ARRAY') {
1028: @intdoms = @{$internet_names};
1029: }
1030: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1031: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1032: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
1033: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
1034: my $hostname = &Apache::lonnet::hostname($lonhost);
1035: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
1036: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1037: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1038: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
1039: my $loncaparev;
1040: if ($authhost eq 'no_account_on_host') {
1041: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1042: } else {
1043: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1044: }
1045: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
1046: $udomdefaults{'remotesessions'},
1047: $defdomdefaults{'hostedsessions'});
1048: }
1049: unless ($canhost) {
1050: if ($authhost eq 'no_account_on_host') {
1051: my $checkloginvia = 1;
1052: my ($login_host,$hostname) =
1053: &Apache::lonnet::choose_server($udom,$checkloginvia);
1054: &Apache::loncommon::content_type($r,'text/html');
1055: $r->send_http_header;
1056: if ($login_host ne '') {
1057: my $protocol = $Apache::lonnet::protocol{$login_host};
1058: $protocol = 'http' if ($protocol ne 'https');
1059: my $alias = &Apache::lonnet::use_proxy_alias($r,$login_host);
1060: $hostname = $alias if ($alias ne '');
1061: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
1062: #FIXME Should preserve where user was going and linkprot by setting ltoken at $login_host
1063: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
1064: '<h3>'.&mt('Account creation').'</h3>'.
1065: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
1066: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
1067: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
1068: &Apache::loncommon::end_page());
1069: } else {
1070: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
1071: '<h3>'.&mt('Account creation unavailable').'</h3>'.
1072: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
1073: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
1074: &Apache::loncommon::end_page());
1075: }
1076: } else {
1077: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
1078: $form);
1079: if ($form->{'firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
1080: $env{'request.deeplink.login'} = $form->{'firsturl'};
1081: } elsif ($form->{'firsturl'} eq '/adm/email') {
1082: if ($form->{'display'} && ($form->{'mailrecip'} eq $form->{'uname'}.':'.$form->{'udom'})) {
1083: $env{'request.display'} = $form->{'mailrecip'};
1084: $env{'request.mailrecip'} = $form->{'mailrecip'};
1085: }
1086: }
1087: if ($form->{'linkprot'}) {
1088: $env{'request.linkprot'} = $form->{'linkprot'};
1089: } elsif ($form->{'linkkey'} ne '') {
1090: $env{'request.linkkey'} = $form->{'linkkey'};
1091: }
1092: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1093: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
1094: }
1095: }
1096: return $canhost;
1097: }
1098:
1099: sub noswitch {
1100: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
1101: '<h3>'.&mt('Session unavailable').'</h3>'.
1102: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
1103: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
1104: &Apache::loncommon::end_page();
1105: return $result;
1106: }
1107:
1108: sub loginhelpdisplay {
1109: my ($authdomain) = @_;
1110: my $login_help = 1;
1111: my $lang = &Apache::lonlocal::current_language();
1112: if ($login_help) {
1113: my $dom = $authdomain;
1114: if ($dom eq '') {
1115: $dom = &Apache::lonnet::default_login_domain();
1116: }
1117: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
1118: my $loginhelp_url;
1119: if ($lang) {
1120: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
1121: if ($loginhelp_url ne '') {
1122: return $loginhelp_url;
1123: }
1124: }
1125: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
1126: if ($loginhelp_url ne '') {
1127: return $loginhelp_url;
1128: } else {
1129: return '/adm/loginproblems.html';
1130: }
1131: }
1132: return;
1133: }
1134:
1135: sub alternate_unames_check {
1136: my ($uname,$udom) = @_;
1137: my %possunames;
1138: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1139: if (ref($domdefs{'unamemap_rule'}) eq 'ARRAY') {
1140: if (@{$domdefs{'unamemap_rule'}} > 0) {
1141: %possunames =
1142: &Apache::lonnet::inst_rulecheck($udom,$uname,undef,
1143: 'unamemap',$domdefs{'unamemap_rule'});
1144: }
1145: }
1146: return %possunames;
1147: }
1148:
1149: 1;
1150: __END__
1151:
1152:
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