1: # The LearningOnline Network
2: # Allow users to self-enroll in a course
3: #
4: # $Id: selfenroll.pm,v 1.11 2008/07/14 10:25:25 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::selfenroll;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::lonnet;
34: use Apache::loncommon;
35: use Apache::lonlocal;
36: use Apache::createaccount;
37: use LONCAPA qw(:DEFAULT :match);
38:
39: sub handler {
40: my $r = shift;
41: &Apache::loncommon::content_type($r,'text/html');
42: $r->send_http_header;
43: if ($r->header_only) {
44: return OK;
45: }
46: my $handle = &Apache::lonnet::check_for_valid_session($r);
47: my $lonidsdir=$r->dir_config('lonIDsDir');
48: my $lonhost = $r->dir_config('lonHostID');
49: if ($handle ne '') {
50: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
51: }
52: &Apache::lonacc::get_posted_cgi($r);
53: &Apache::lonlocal::get_language_handle($r);
54: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['cid']);
55: my ($coursechk,$cid) = &validate_course_id($env{'form.cid'});
56: if ($coursechk ne 'ok') {
57: &page_header($r,$cid);
58: $r->print('<h3>'.&mt('Self-enrollment error').'</h3>'.
59: '<span class="LC_error">'.
60: &mt('Invalid domain or course number').'</span>');
61: $r->print(&Apache::loncommon::end_page());
62: return OK;
63: }
64: my $now = time;
65: my $js;
66: if ($env{'form.phase'} eq 'login') {
67: $js = &Apache::createaccount::javascript_setforms($now);
68: }
69: &page_header($r,$cid,$js);
70: my $include = $r->dir_config('lonIncludes');
71: if ($env{'form.phase'} eq 'login') {
72: my $jsh=Apache::File->new($include."/londes.js");
73: $r->print(<$jsh>);
74: }
75: my ($cdom,$cnum,$desc,$canenroll,$selfenroll_types,$selfenroll_registered,
76: @cancreate,$knownuser,$selfenroll_access_start,$selfenroll_access_end,
77: $selfenroll_section,$selfenroll_future,%curr_role,%coursehash,$cdomdesc);
78: %coursehash = &Apache::lonnet::coursedescription($cid);
79: $cdom = $coursehash{'domain'};
80: $cnum = $coursehash{'num'};
81: $desc = $coursehash{'description'};
82: $selfenroll_types = $coursehash{'internal.selfenroll_types'};
83: $selfenroll_registered = $coursehash{'internal.selfenroll_registered'};
84: $selfenroll_section = $coursehash{'internal.selfenroll_section'};
85: $selfenroll_access_start = $coursehash{'internal.selfenroll_start_access'};
86: $selfenroll_access_end = $coursehash{'internal.selfenroll_end_access'};
87: if ($selfenroll_types ne '') {
88: my $start = $coursehash{'internal.selfenroll_start_date'};
89: my $end = $coursehash{'internal.selfenroll_end_date'};
90: if (($start > 0 && $start < $now) && (($end == 0) || ($end > 0 && $end > $now))) {
91: $canenroll = 1;
92: } elsif (($end == 0) || ($end > 0 && $end > $now)) {
93: if ($start > $now) {
94: $selfenroll_future = &Apache::lonlocal::locallocaltime($start);
95: }
96: }
97: }
98: $knownuser = &user_is_known();
99: if (!$canenroll) {
100: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3><span class="LC_warning">'.
101: &mt('Self-enrollment is not currently available for this course.').
102: '</span><br /><br />');
103: if ($selfenroll_types ne '') {
104: if ($selfenroll_future ne '') {
105: if ($selfenroll_types eq '*') {
106: $r->print(&mt('Self-enrollment will become available starting [_1], and will be available to all LON-CAPA users.',$selfenroll_future).'<br />');
107: } else {
108: my ($enrolltypes,$longtypes,$alldoms);
109: if ($knownuser) {
110: &get_selfenroll_filters($selfenroll_types,$env{'user.domain'});
111: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
112: if (ref($enrolltypes) eq 'HASH') {
113: if (ref($enrolltypes->{$env{'user.domain'}}) eq 'ARRAY') {
114: if (grep(/^any$/,@{$enrolltypes->{$env{'user.domain'}}})) {
115: $r->print(&mt('Self-enrollment will become available starting [_1], and will be available to all LON-CAPA users at your institution ([_2]).',
116: $selfenroll_future,$domdesc).'<br />');
117:
118: } else {
119: if (&user_can_selfenroll($env{'user.domain'},
120: $env{'user.name'},
121: $enrolltypes->{$env{'user.domain'}})) {
122: $r->print(&mt('Self-enrollment will become available starting [_1]; please enroll at that time.',$selfenroll_future));
123: } else {
124: $r->print(&mt('Although self-enrollment will become available starting [_1], you are ineligible for enrollment.',$selfenroll_future).'<br />');
125: $r->print(&print_selfenroll_types($longtypes,$env{'user.domain'}));
126: }
127: }
128: }
129: }
130: } else {
131: $r->print(&mt('Self-enrollment will become available starting [_1].',
132: $selfenroll_future).'<br />');
133: $r->print(&print_selfenroll_types($longtypes));
134: }
135: }
136: }
137: }
138: }
139: if ($knownuser) {
140: foreach my $key (keys(%env)) {
141: if ($key =~ m-^user\.role\.st\./$cdom/$cnum/?(\w*)$-) {
142: my $sec = $1;
143: my ($start,$end) = split(/\./,$env{$key});
144: my $status = 'active';
145: if (($end) && ($end<=$now)) {
146: $status = 'previous';
147: }
148: if (($start) && ($now<$start)) {
149: $status = 'future';
150: }
151: if ($status eq 'active' || $status eq 'future') {
152: $curr_role{'status'} = $status;
153: $curr_role{'section'} = $sec;
154: if ($curr_role{'section'} eq '') {
155: $curr_role{'section'} = &mt('none');
156: }
157: $curr_role{'start'} = &Apache::lonlocal::locallocaltime($start);
158: $curr_role{'role'} = 'st./'.$cdom.'/'.$cnum;
159: if ($sec ne '') {
160: $curr_role{'role'} .= '/'.$sec;
161: }
162: }
163: }
164: }
165: }
166: if (!$canenroll) {
167: if (keys(%curr_role)) {
168: $r->print(&has_role(%curr_role));
169: }
170: $r->print(&Apache::loncommon::end_page());
171: return OK;
172: }
173: @cancreate = &can_create($cdom);
174: my ($login_path,$firsturl,$create_path,$sso_url,$missing_formitem);
175: $login_path = '/adm/login';
176: $firsturl= '/adm/selfenroll?cid='.$cid;
177: $create_path = '/adm/createaccount';
178: $sso_url = $r->dir_config('lonSSOReloginServer');
179: if ($sso_url eq '') {
180: $sso_url = $login_path;
181: }
182: $missing_formitem = &mt('The link to the requested page could not be followed.')."\\n".&mt('The placeholder for the courseID is absent.');
183: if ($knownuser) {
184: if (keys(%curr_role)) {
185: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3>'.
186: '<span class="LC_warning">'.&has_role(%curr_role).'</span>');
187: $r->print(&Apache::loncommon::end_page());
188: return OK;
189: }
190: &process_self_enroll($r,$cdom,$cnum,$selfenroll_types,$selfenroll_registered,
191: $selfenroll_access_start,$selfenroll_access_end,
192: $selfenroll_section,$now);
193: } elsif ($env{'form.phase'} eq 'login') {
194: my $submit_text = &mt('Log in');
195: $r->print('<h3>'.&mt('Log-in to LON-CAPA').'</h3>');
196: my $udom = &Apache::lonnet::default_login_domain();
197: $r->print(&Apache::createaccount::login_box($now,$lonhost,$cid,
198: $submit_text,$udom,'selfenroll'));
199: $r->print(&mt('You will be able to self-enroll in the course you selected ([_1]) after you have successfully logged in.','<b>'.$desc.'</b>').
200: &Apache::loncommon::end_page());
201: return OK;
202: } elsif (@cancreate > 0) {
203: $r->print(<<END);
204: <script type="text/javascript">
205: function setPath(formaction,item,arg) {
206: if (formaction != '') {
207: document.forms.logmein.action = formaction;
208: }
209: var itemid = getIndexByName("setting");
210: if (itemid > -1) {
211: document.logmein.elements[itemid].name = item;
212: document.logmein.elements[itemid].value = arg;
213: document.logmein.submit();
214: } else {
215: alert("$missing_formitem");
216: }
217: return;
218: }
219:
220: function getIndexByName(item) {
221: for (var i=0;i<document.logmein.elements.length;i++) {
222: if (document.logmein.elements[i].name == item) {
223: return i;
224: }
225: }
226: return -1;
227: }
228: </script>
229: END
230: $r->print('<h3>'.&mt('LON-CAPA account required').'</h3>'.
231: &mt('You need to be logged into LON-CAPA to self-enroll in a course.').'<ul><li>'.&mt('If you have an account in LON-CAPA, [_1]log-in[_2].','<a href="javascript:setPath('."'','phase','login'".')">','</a>').'</li>');
232: if (@cancreate > 1) {
233: $r->print('<li>'.&mt('Otherwise:').'<br />');
234: my $count = 0;
235: foreach my $type ('sso','login','email') {
236: if (($count > 0) && ($count <@cancreate)) {
237: $r->print(' , '.&mt('or').'<br />');
238: }
239: if (grep(/^$type$/,@cancreate)) {
240: if ($type eq 'sso') {
241: $r->print(' '.&mt("if you have an institutional log-in, use your institution's [_1]single sign on page[_2] to log-in, then create an account",'<a href="javascript:setPath('."'$sso_url','firsturl','$firsturl'".')">','</a>'));
242: } elsif ($type eq 'login') {
243: $r->print(' '.&mt('if you have an institutional login, [_1]create an account[_2]','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
244: } elsif ($type eq 'email') {
245: $r->print(' '.&mt('you can use an e-mail address to [_1]create an account[_2]','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
246: }
247: $count ++;
248: }
249: }
250: $r->print('.<br />');
251: } else {
252: if ($cancreate[0] eq 'login') {
253: $r->print('<li>'.&mt('Otherwise, if you have an institutional login, [_1]create an account[_2].','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
254: } elsif ($cancreate[0] eq 'email') {
255: $r->print('<li>'.&mt('Otherwise, you will use an e-mail address to [_1]create an account[_2].','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
256: } elsif ($cancreate[0] eq 'sso') {
257: $r->print('<li>'.&mt("Otherwise, use your institution's [_1]single sign on page[_2] to log-in, then create an account.",'<a href="javascript:setPath('."'$sso_url','firsturl','$firsturl'".')">','</a>'));
258: }
259: }
260: if ($selfenroll_types eq '*') {
261: $r->print('<br />'.&mt('You will be able to self enroll in this course once the account has been created.').'</li></ul>');
262: } else {
263: $r->print('</li></ul>');
264: my ($enrolltypes,$longtypes,$alldoms) =
265: &get_selfenroll_filters($selfenroll_types);
266: $r->print(&print_selfenroll_types($longtypes));
267: }
268: } else {
269: my $cdomdesc = &Apache::lonnet::domain($cdom,'description');
270: $r->print('<h3>'.&mt('LON-CAPA account required').'</h3>');
271: $r->print(&mt('You must [_1]log-in[_2] to LON-CAPA with an existing account to be able to enroll in this course, as account creation at this institution ([_3]) is not permitted when self-enrolling.','<a href="'.$login_path.'">','</a>',$cdomdesc));
272: if ($selfenroll_types ne '*') {
273: my ($enrolltypes,$longtypes,$alldoms) =
274: &get_selfenroll_filters($selfenroll_types);
275: $r->print('<br />'.&print_selfenroll_types($longtypes));
276: }
277: my $displayurl = &escape($firsturl);
278: $r->print(&mt('Submit a request to the LON-CAPA [_1]helpdesk[_2] for [_3] if you require assistance.','<a href="/adm/helpdesk?origurl='.$displayurl.'">','</a>',$cdomdesc));
279: }
280: $r->print('<form name ="logmein" method="post" action="">'."\n".
281: '<input type="hidden" name=cid" value="'.$cid.'" />'."\n".
282: '<input type="hidden" name="setting" value=""/>'."\n".
283: '</form>'."\n".
284: &Apache::loncommon::end_page());
285: return OK;
286: }
287:
288: sub page_header {
289: my ($r,$cid,$js) = @_;
290: my $start_page =
291: &Apache::loncommon::start_page('Self-enroll in a LON-CAPA course',$js,
292: {'no_inline_link' => 1,});
293: $r->print($start_page);
294: &Apache::lonhtmlcommon::clear_breadcrumbs();
295: &Apache::lonhtmlcommon::add_breadcrumb
296: ({href=>"/adm/selfenroll?cid=$cid",
297: text=>"Self-enroll"});
298: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Self-enroll in course'));
299: return;
300: }
301:
302: sub validate_course_id {
303: my ($cid) = @_;
304: my ($cdom,$cnum) = ($env{'form.cid'} =~ /^($match_domain)_($match_courseid)$/);
305: if ($cdom ne '' && $cnum ne '') {
306: if (&Apache::lonnet::is_course($cdom,$cnum)) {
307: return ('ok',$cid);
308: }
309: }
310: return;
311: }
312:
313: sub user_is_known {
314: my $known = 0;
315: if ($env{'user.name'} ne '' && $env{'user.name'} ne 'public'
316: && $env{'user.domain'} ne '' && $env{'user.domain'} ne 'public') {
317: $known = 1;
318: }
319: return $known;
320: }
321:
322: sub can_create {
323: my ($cdom) = @_;
324: my @cancreate;
325: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$cdom);
326: if (ref($domconfig{'usercreation'}) eq 'HASH') {
327: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
328: if ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') {
329: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
330: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
331: } else {
332: if (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
333: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
334: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
335: }
336: }
337: }
338: }
339: }
340: return @cancreate;
341: }
342:
343: sub has_role {
344: my (%curr_role) = @_;
345: my $output;
346: if ($curr_role{'status'} eq 'active') {
347: my $rolelink = &jump_to_role($curr_role{'role'});
348: $output = &mt('You already have an active student role (section: "[_1]") in this course.',$curr_role{'section'}).'<br>'.$rolelink;
349: } elsif ($curr_role{'status'} eq 'future') {
350: $output = &mt('You have a student role (section: "[_1]") in this course which will become active [_2].',$curr_role{'section'},$curr_role{'start'});
351: }
352: return $output;
353: }
354:
355: sub process_self_enroll {
356: my ($r,$cdom,$cnum,$selfenroll_types,$selfenroll_registered,
357: $selfenroll_access_start,$selfenroll_access_end,$selfenroll_section,$now) = @_;
358: my $udom = $env{'user.domain'};
359: my $uname = $env{'user.name'};
360: my $selfenroll = 0;
361: my ($enrolltypes,$longtypes,$alldoms);
362: if ($selfenroll_types eq '*') {
363: $selfenroll = 1;
364: } else {
365: ($enrolltypes,$longtypes,$alldoms) =
366: &get_selfenroll_filters($selfenroll_types,$udom);
367: if ($alldoms) {
368: $selfenroll = 1;
369: } elsif (ref($enrolltypes) eq 'HASH') {
370: if (ref($enrolltypes->{$udom}) eq 'ARRAY') {
371: if (grep(/^any$/,@{$enrolltypes->{$udom}})) {
372: $selfenroll = 1;
373: } else {
374: $selfenroll = &user_can_selfenroll($udom,$uname,$enrolltypes->{$udom});
375: }
376: }
377: }
378: }
379: if ($selfenroll) {
380: my $usec = $selfenroll_section;
381: if ($selfenroll_section eq 'none') {
382: $usec = '';
383: }
384: if ($selfenroll_registered) {
385: my ($registered,$instsec,$message) = &check_registered($cdom,$cnum);
386: $usec = $instsec;
387: if (!$registered) {
388: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3>'.&mt('Self-enrollment is restricted to students officially registered for this course.').'<br />');
389: if ($message) {
390: $r->print($message);
391: } else {
392: $r->print(&mt('As you are not currently registered for this course, self-enrollment is unavailable.'));
393: }
394: return;
395: }
396: }
397: my $enrollresult =
398: &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,
399: undef,undef,$usec,$selfenroll_access_end,$selfenroll_access_start,
400: 'manual',undef,$cdom.'_'.$cnum,$selfenroll);
401: if ($enrollresult eq 'ok') {
402: my (%userroles,%newrole,%newgroups);
403: my $role = 'st';
404: my $area = '/'.$cdom.'/'.$cnum;
405: my $spec = $role.'.'.$area;
406: if ($usec ne '') {
407: $spec .= '/'.$usec;
408: $area .= '/'.$usec;
409: }
410: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,
411: $area);
412: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,%newgroups);
413: $userroles{'user.role.'.$spec} = $selfenroll_access_start.'.'.$selfenroll_access_end;
414: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
415: $r->print('<h3>'.&mt('Enrollment process complete').'</h3>');
416: if ($selfenroll_access_end && $selfenroll_access_end <= $now) {
417: $r->print(&mt('The end date for access to this course for users who self-enroll has passed.').'<br />'.&mt('Consequently, although a new role was created for you in the course, it is an inactive role which does not provide access to the course.'));
418: } else {
419: $r->print(&mt('Self-enrollment in this course was successful.').'<br />');
420: my $showstart = &Apache::lonlocal::locallocaltime($selfenroll_access_start);
421: my $showend = &Apache::lonlocal::locallocaltime($selfenroll_access_end);
422: if ($selfenroll_access_start && $selfenroll_access_start >$now) {
423: $r->print(&mt('The start date for access to this course for users who self-enroll has yet to be reached.').'<br />'.&mt('Consequently, although a new role was created for you in the course, you will not be able to select this role until [_1].',$showstart));
424: } else {
425: my $newrole = 'st./'.$cdom.'/'.$cnum;
426: if ($usec ne '') {
427: $newrole .= '/'.$usec;
428: }
429: my $rolelink = &jump_to_role($newrole);
430: $r->print(&mt('Your new role is available immediately, and will provide access to the course until [_1].',$showend).'<br /><br />'."\n".
431: $rolelink);
432: }
433: }
434: } else {
435: $r->print('<h3>'.&mt('Enrollment incomplete').'</h3>'.
436: &mt('Self-enrollment in this course failed.'));
437: if ($enrollresult ne '') {
438: $r->print('<span class="LC_error">'.$enrollresult.'</span>');
439: }
440: }
441: } else {
442: $r->print('<h3>'.&mt('Self-enrollment unavailable').'</h3>'.
443: &mt('You are not permitted to enroll yourself in this course.').'<br />');
444: $r->print(&print_selfenroll_types($longtypes));
445: }
446: return;
447: }
448:
449: sub user_can_selfenroll {
450: my ($udom,$uname,$domenrolltypes) = @_;
451: my $selfenroll = 0;
452: my @info = ['inststatus'];
453: my %userhash = &Apache::lonnet::userenvironment($udom,$uname,@info);
454: my @inststatuses;
455: if ($userhash{'inststatus'} eq '') {
456: push(@inststatuses,'other');
457: } else {
458: my @esc_statuses = split(/:/,$userhash{'inststatus'});
459: @inststatuses = map { &unescape($_); } (@esc_statuses);
460: }
461: foreach my $type (@inststatuses) {
462: if (ref($domenrolltypes) eq 'ARRAY') {
463: if (grep(/^\Q$type\E$/,@{$domenrolltypes})) {
464: $selfenroll = 1;
465: last;
466: }
467: }
468: }
469: return $selfenroll;
470: }
471:
472: sub jump_to_role {
473: my ($role) = @_;
474: my $output = <<"END";
475: <script type="text/javascript">
476: function SelectRole() {
477: document.rolechoice.selectrole.value = '1';
478: document.rolechoice.submit();
479: }
480: </script>
481: END
482: $output .= '<a href="javascript:SelectRole()">'."\n".
483: &mt('Enter course now').'</a>'."\n".
484: '<form name="rolechoice" action="/adm/roles" method="post">'."\n".
485: '<input type="hidden" name="selectrole" value="" />'."\n".
486: '<input type="hidden" name="'.$role.'" value="1" />'."\n".
487: '</form>';
488: return $output;
489: }
490:
491: sub get_selfenroll_filters {
492: my ($selfenroll_types,$domain) = @_;
493: my (%enrolltypes,%longtypes,$alldoms);
494: my @selfenrolldoms = split(/;/,$selfenroll_types);
495: foreach my $item (@selfenrolldoms) {
496: my ($selfdom,$type_str) = split(/:/,$item);
497: if ($selfdom eq '*') {
498: $alldoms = 1;
499: last;
500: }
501: if ($domain ne '') {
502: next if ($selfdom ne $domain);
503: }
504: if ($selfdom =~ /^$match_domain$/) {
505: if (&Apache::lonnet::domain($selfdom) ne '') {
506: my @types = split(/,/,$type_str);
507: my ($othertitle,$usertypes,$types) =
508: &Apache::loncommon::sorted_inst_types($selfdom);
509: if (ref($usertypes) eq 'HASH') {
510: my $anytype = 1;
511: foreach my $key (keys(%{$usertypes})) {
512: if (!grep(/^\Q$key\E$/,@types)) {
513: $anytype = 0;
514: last;
515: }
516: }
517: if ($anytype) {
518: if (!(grep(/^other$/,@types))) {
519: $anytype = 0;
520: }
521: }
522: $usertypes->{'any'} = &mt('Any users');
523: $usertypes->{'other'} = &mt('Others');
524: if ($anytype) {
525: @{$enrolltypes{$selfdom}} = ('any');
526: } else {
527: @{$enrolltypes{$selfdom}} = @types;
528: }
529: @{$longtypes{$selfdom}} =
530: map {$usertypes->{$_}} @{$enrolltypes{$selfdom}}
531: }
532: }
533: }
534: }
535: return (\%enrolltypes,\%longtypes,$alldoms);
536: }
537:
538: sub print_selfenroll_types {
539: my ($longtypes,$domain) = @_;
540: my $output;
541: if (ref($longtypes) eq 'HASH') {
542: if ($domain ne '') {
543: my $domdesc = &Apache::lonnet::domain($domain,'description');
544: if (ref($longtypes->{$domain}) eq 'ARRAY') {
545: if (grep(/^any$/,@{$longtypes->{$domain}})) {
546: $output = &mt('Self-enrollment in this course is available to any user affiliated with [_1].',$domdesc);
547: } else {
548: my $status_str = join(', ',@{$longtypes->{$domain}});
549: $output = &mt('Self-enrollment in this course is only available to users affiliated with [_1] who have the following status: "[_2]".',$domdesc,$status_str);
550: }
551: } else {
552: $output = &mt('Self-enrollment is not currently available for this course for users affiliated with [_1].',$domdesc);
553: }
554: } elsif (keys(%{$longtypes}) > 0) {
555: $output = &mt('Self-enrollment in this course is only available to users affiliated with the following institutions, and who have the required status:').' <ul>';
556: foreach my $selfdom (sort(keys(%{$longtypes}))) {
557: my $selfdomdesc = &Apache::lonnet::domain($selfdom,'description');
558: if (ref($longtypes->{$selfdom}) eq 'ARRAY') {
559: $output .= '<li>'.$selfdomdesc.': '.join(', ',@{$longtypes->{$selfdom}}).'</li>';
560: }
561: }
562: $output .= '</ul>';
563: } else {
564: $output = &mt('Self-enrollment is not currently available for this course.');
565: }
566: }
567: return $output;
568: }
569:
570: sub check_registered {
571: my ($cdom,$cnum) = @_;
572: my ($registered,$instsec,$message);
573: my %settings = &Apache::lonnet::get('environment',['internal.coursecode',
574: 'internal.sectionnums',
575: 'internal.crosslistings'],$cdom,$cnum);
576: my (@allcourses,%LC_code,%affiliates,%reply);
577: &Apache::loncommon::get_institutional_codes(\%settings,\@allcourses,\%LC_code);
578: if (@allcourses > 0) {
579: @{$affiliates{$cnum}} = @allcourses;
580: my $outcome = &Apache::lonnet::fetch_enrollment_query('updatenow',\%affiliates,\%reply,$cdom,$cnum);
581: if ($outcome eq 'ok') {
582: if ($reply{$cnum} > 0) {
583: foreach my $class (@allcourses) {
584: my %enrolled;
585: my $dir = $Apache::lonnet::perlvar{'lonDaemons'};
586: my %place = &LONCAPA::Enrollment::place_hash();
587: &LONCAPA::Enrollment::parse_classlist($dir,$cdom,$cnum,$class,
588: \%place,$LC_code{$class},\%enrolled);
589: if (defined($enrolled{$env{'user.name'}})) {
590: $registered = 1;
591: $instsec = $LC_code{$class};
592: last;
593: }
594: }
595: } else {
596: $message = &mt('Your registration status could not be verified.');
597: }
598: } else {
599: $message = &mt('Your registration status could not determined, because a problem occurred retrieving data.');
600: }
601: } else {
602: $message = &mt('As no institutional course sections are currently associated with this course, your registration status is undetermined.');
603: }
604: return ($registered,$instsec,$message);
605: }
606:
607: 1;
608:
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