1: # The LearningOnline Network with CAPA
2: # The LON-CAPA Homework handler
3: #
4: # $Id: lonhomework.pm,v 1.395 2025/06/28 14:35:00 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::lonhomework;
30: use strict;
31: use Apache::style();
32: use Apache::lonxml();
33: use Apache::lonnet;
34: use Apache::lonplot();
35: use Apache::inputtags();
36: use Apache::structuretags();
37: use Apache::randomlabel();
38: use Apache::response();
39: use Apache::hint();
40: use Apache::outputtags();
41: use Apache::caparesponse();
42: use Apache::radiobuttonresponse();
43: use Apache::optionresponse();
44: use Apache::imageresponse();
45: use Apache::essayresponse();
46: use Apache::externalresponse();
47: use Apache::rankresponse();
48: use Apache::matchresponse();
49: use Apache::chemresponse();
50: use Apache::functionplotresponse();
51: use Apache::drawimage();
52: use Apache::loncapamath();
53: use Apache::loncourseuser();
54: use Apache::grades();
55: use Apache::Constants qw(:common);
56: use Apache::loncommon();
57: use Apache::lonparmset();
58: use Apache::lonnavmaps();
59: use Apache::lonlocal;
60: use LONCAPA qw(:DEFAULT :match);
61: use LONCAPA::ltiutils();
62: use Time::HiRes qw( gettimeofday tv_interval );
63: use HTML::Entities();
64: use File::Copy();
65:
66: # FIXME - improve commenting
67:
68: my $registered_cleanup;
69:
70: BEGIN {
71: &Apache::lonxml::register_insert();
72: }
73:
74:
75: =pod
76:
77: =item set_bubble_lines()
78:
79: Called at analysis time to set the bubble lines
80: hash for the problem.. This should be called in the
81: end_problemtype tag in analysis mode.
82:
83: We fetch the hash of part id counters from lonxml
84: and push them into analyze:{part_id.bubble_lines}.
85:
86: =cut
87:
88: sub set_bubble_lines {
89: my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
90:
91: foreach my $key (keys(%bubble_counters)) {
92: $Apache::lonhomework::analyze{"$key.bubble_lines"} =
93: $bubble_counters{"$key"};
94: }
95: }
96:
97: #
98: # Decides what targets to render for.
99: # Implicit inputs:
100: # Various session environment variables:
101: # request.state - published - is a /res/ resource
102: # uploaded - is a /uploaded/ resource
103: # contruct - is a /priv/ resource
104: # form.grade_target - a form parameter requesting a specific target
105: sub get_target {
106: &Apache::lonxml::debug("request.state = $env{'request.state'}");
107: if( defined($env{'form.grade_target'})) {
108: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
109: } else {
110: &Apache::lonxml::debug("form.grade_target <undefined>");
111: }
112: if (($env{'request.state'} eq "published") ||
113: ($env{'request.state'} eq "uploaded")) {
114: if ( defined($env{'form.grade_target'} )
115: && ($env{'form.grade_target'} eq 'tex')) {
116: return ($env{'form.grade_target'});
117: } elsif ( defined($env{'form.grade_target'} )
118: && ($Apache::lonhomework::viewgrades eq 'F' )) {
119: return ($env{'form.grade_target'});
120: } elsif ( $env{'form.grade_target'} eq 'webgrade'
121: && ($Apache::lonhomework::queuegrade eq 'F' )) {
122: return ($env{'form.grade_target'});
123: } elsif ($env{'form.grade_target'} eq 'answer') {
124: if ($env{'form.answer_output_mode'} eq 'tex') {
125: return ($env{'form.grade_target'});
126: }
127: }
128: if ($env{'form.webgrade'} &&
129: ($Apache::lonhomework::modifygrades eq 'F'
130: || $Apache::lonhomework::queuegrade eq 'F' )) {
131: return ('grade','webgrade');
132: }
133: if ( defined($env{'form.submitted'}) &&
134: ( !defined($env{'form.newrandomization'}))) {
135: return ('grade', 'web');
136: } else {
137: return ('web');
138: }
139: } elsif ($env{'request.state'} eq "construct") {
140: #
141: # We are in construction space, editing and testing problems
142: #
143: if ( defined($env{'form.grade_target'}) ) {
144: return ($env{'form.grade_target'});
145: }
146: if ( defined($env{'form.preview'})) {
147: if ( defined($env{'form.submitted'})) {
148: #
149: # We are doing a problem preview
150: #
151: return ('grade', 'web');
152: } else {
153: return ('web');
154: }
155: } else {
156: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
157: return ('grade','webgrade','answer');
158: } elsif ($env{'form.problemmode'} eq 'view') {
159: return ('grade','web','answer');
160: } elsif ($env{'form.problemmode'} eq 'saveview') {
161: return ('modified','web','answer');
162: } elsif ($env{'form.problemmode'} eq 'discard') {
163: return ('web','answer');
164: } elsif (($env{'form.problemmode'} eq 'saveedit') ||
165: ($env{'form.problemmode'} eq 'undo')) {
166: my %editors = &Apache::loncommon::permitted_editors();
167: if ($editors{'edit'}) {
168: return ('modified','no_output_web','edit');
169: } else {
170: return ('web');
171: }
172: } elsif ($env{'form.problemmode'} eq 'edit') {
173: my %editors = &Apache::loncommon::permitted_editors();
174: if ($editors{'edit'}) {
175: return ('no_output_web','edit');
176: } else {
177: return ('web');
178: }
179: } else {
180: return ('web');
181: }
182: }
183: #
184: # End of Authoring Space
185: #
186: }
187: #
188: # Huh? We are nowhere, so do nothing.
189: #
190: return ();
191: }
192:
193: sub setup_vars {
194: my ($target) = @_;
195: return ';'
196: # return ';$external::target='.$target.';';
197: }
198:
199: sub proctor_checked_in {
200: my ($slot_name,$slot,$type)=@_;
201: my @possible_proctors=split(",",$slot->{'proctor'});
202:
203: return 1 if (!@possible_proctors);
204:
205: my $key;
206: if ($type eq 'Task') {
207: my $version=$Apache::lonhomework::history{'resource.0.version'};
208: $key ="resource.$version.0.checkedin";
209: } elsif (($type eq 'problem') || ($type eq 'tool')) {
210: $key ='resource.0.checkedin';
211: }
212: # backward compatability, used to be username@domain,
213: # now is username:domain
214: my $who = $Apache::lonhomework::history{$key};
215: if ($who !~ /:/) {
216: $who =~ tr/@/:/;
217: }
218: foreach my $possible (@possible_proctors) {
219: if ($who eq $possible
220: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
221: return 1;
222: }
223: }
224: return 0;
225: }
226:
227: sub check_slot_access {
228: my ($id,$type,$symb,$partlist)=@_;
229:
230: # does it pass normal muster
231: my ($status,$datemsg)=&check_access($id,$symb);
232:
233: my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
234: if ($useslots ne 'resource' && $useslots ne 'map'
235: && $useslots ne 'map_map') {
236: return ($status,$datemsg);
237: }
238:
239: my $checkin = 'resource.0.checkedin';
240: my $version;
241: if ($type eq 'Task') {
242: $version=$Apache::lonhomework::history{'resource.version'};
243: $checkin = "resource.$version.0.checkedin";
244: }
245: my $checkedin = $Apache::lonhomework::history{$checkin};
246: my ($returned_slot,$slot_name,$checkinslot,$ipused,$blockip,$now,$ip,
247: $consumed_uniq);
248: $now = time;
249: $ip=$ENV{'REMOTE_ADDR'} || $env{'request.host'};
250:
251: if ($checkedin) {
252: $checkinslot = $Apache::lonhomework::history{"$checkin.slot"};
253: my %slot=&Apache::lonnet::get_slot($checkinslot);
254: $consumed_uniq = $slot{'uniqueperiod'};
255: if ($slot{'iptied'}) {
256: $ipused = $Apache::lonhomework::history{"$checkin.ip"};
257: unless (($ip ne '') &&
258: (($ipused eq $ip) || ($ENV{'REMOTE_ADDR'} eq '127.0.0.1'))) {
259: $blockip = $slot{'iptied'};
260: $slot_name = $checkinslot;
261: $returned_slot = \%slot;
262: }
263: }
264: }
265:
266: if ($status eq 'SHOW_ANSWER') {
267: if ($blockip eq 'answer') {
268: return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
269: } else {
270: return ($status,$datemsg);
271: }
272: }
273:
274: if ($status eq 'CLOSED' ||
275: $status eq 'INVALID_ACCESS' ||
276: $status eq 'UNAVAILABLE') {
277: return ($status,$datemsg);
278: }
279: if ($env{'request.state'} eq "construct") {
280: return ($status,$datemsg);
281: }
282:
283: if ($type eq 'Task') {
284: if ($checkedin &&
285: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
286: if ($blockip eq 'answer') {
287: return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
288: } else {
289: return ('SHOW_ANSWER');
290: }
291: }
292: } elsif (($type eq 'problem') &&
293: ($Apache::lonhomework::browse eq 'F') &&
294: ($ENV{'REMOTE_ADDR'} eq '127.0.0.1') &&
295: ($env{'form.grade_courseid'} eq $env{'request.course.id'}) &&
296: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}))) {
297: return ($status,$datemsg);
298: }
299:
300: my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb);
301: my $available = &Apache::lonnet::EXT("resource.0.available",$symb);
302: my @slots= (split(':',$availablestudent),split(':',$available));
303:
304: # if (!@slots) {
305: # return ($status,$datemsg);
306: # }
307: undef($returned_slot);
308: undef($slot_name);
309: my $slotstatus='NOT_IN_A_SLOT';
310: my $num_usable_slots = 0;
311: if (!$symb) {
312: ($symb) = &Apache::lonnet::whichuser();
313: }
314: foreach my $slot (@slots) {
315: $slot =~ s/(^\s*|\s*$)//g;
316: &Apache::lonxml::debug("getting $slot");
317: my %slot=&Apache::lonnet::get_slot($slot);
318: &Apache::lonhomework::showhash(%slot);
319: next if ($slot{'endtime'} < $now);
320: $num_usable_slots ++;
321: if ($slot{'starttime'} < $now &&
322: $slot{'endtime'} > $now &&
323: &Apache::loncommon::check_ip_acc($slot{'ip'})) {
324: if ($slot{'iptied'}) {
325: if ($env{'request.course.id'}) {
326: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
327: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
328: if ($slot eq $checkinslot) {
329: if ($ip eq $ipused) {
330: &Apache::lonxml::debug("$slot is good");
331: $slotstatus ='NEEDS_CHECKIN';
332: } else {
333: $slotstatus = 'NEED_DIFFERENT_IP';
334: $slot_name = $slot;
335: $returned_slot = \%slot;
336: last;
337: }
338: } elsif ($ip) {
339: my $uniqkey = "$slot\0$symb\0$ip";
340: my %used_ip = &Apache::lonnet::get('slot_uniqueips',[$uniqkey],$cdom,$cnum);
341: if ($used_ip{$uniqkey}) {
342: $slotstatus = 'NEED_DIFFERENT_IP';
343: } else {
344: &Apache::lonxml::debug("$slot is good");
345: $slotstatus ='NEEDS_CHECKIN';
346: }
347: }
348: }
349: } else {
350: &Apache::lonxml::debug("$slot is good");
351: $slotstatus='NEEDS_CHECKIN';
352: }
353: if ($slotstatus eq 'NEEDS_CHECKIN') {
354: $returned_slot=\%slot;
355: $slot_name=$slot;
356: last;
357: }
358: }
359: }
360: if ($slotstatus eq 'NEEDS_CHECKIN' &&
361: &proctor_checked_in($slot_name,$returned_slot,$type)) {
362: &Apache::lonxml::debug("proctor checked in");
363: $slotstatus=$status;
364: }
365:
366: my ($is_correct,$got_grade);
367: if ($type eq 'Task') {
368: my $version=$Apache::lonhomework::history{'resource.0.version'};
369: $got_grade =
370: ($Apache::lonhomework::history{"resource.$version.0.status"}
371: =~ /^(?:pass|fail)$/);
372: $is_correct =
373: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
374: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
375: } elsif (($type eq 'problem') || ($type eq 'tool')) {
376: if ((ref($partlist) eq 'ARRAY') && (@{$partlist} > 0)) {
377: my ($numcorrect,$numgraded) = (0,0);
378: foreach my $part (@{$partlist}) {
379: my $currtries = $Apache::lonhomework::history{"resource.$part.tries"};
380: my $maxtries = &Apache::lonnet::EXT("resource.$part.maxtries",$symb);
381: my $probstatus = &Apache::structuretags::get_problem_status($part);
382: my $earlyout;
383: unless (($probstatus eq 'no') ||
384: ($probstatus eq 'no_feedback_ever')) {
385: if ($Apache::lonhomework::history{"resource.$part.solved"} =~/^correct_/) {
386: $numcorrect ++;
387: } else {
388: $earlyout = 1;
389: }
390: }
391: if ($currtries == $maxtries) {
392: $earlyout = 1;
393: } else {
394: $numgraded ++;
395: }
396: last if ($earlyout);
397: }
398: my $numparts = scalar(@{$partlist});
399: if ($numparts == $numcorrect) {
400: $is_correct = 1;
401: }
402: if ($numparts == $numgraded) {
403: $got_grade = 1;
404: }
405: } else {
406: my $currtries = $Apache::lonhomework::history{"resource.0.tries"};
407: my $maxtries = &Apache::lonnet::EXT("resource.0.maxtries",$symb);
408: my $probstatus = &Apache::structuretags::get_problem_status('0');
409: unless (($probstatus eq 'no') ||
410: ($probstatus eq 'no_feedback_ever')) {
411: $is_correct =
412: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
413: }
414: unless (($currtries == $maxtries) || ($is_correct)) {
415: $got_grade = 1;
416: }
417: }
418: }
419:
420: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
421:
422: # no slot is currently open, and has been checked in for this version
423: # but hasn't got a grade, therefore must be awaiting a grade
424: if (!defined($slot_name)
425: && $checkedin
426: && !$got_grade) {
427: return ('WAITING_FOR_GRADE');
428: }
429:
430: # Previously used slot is no longer open, and has been checked in for this version.
431: # However, the problem is not closed, and potentially, another slot might be
432: # used to gain access to it to work on it, until the due date is reached, and the
433: # problem then becomes CLOSED. Therefore return the slotstatus -
434: # (which will be one of: NOT_IN_A_SLOT, RESERVABLE, RESERVABLE_LATER, or NOTRESERVABLE).
435:
436: if (!defined($slot_name) && (($type eq 'problem') || ($type eq 'tool'))) {
437: if ($slotstatus eq 'NOT_IN_A_SLOT') {
438: if (!$num_usable_slots) {
439: ($slotstatus,$datemsg) = &check_reservable_slot($slotstatus,$symb,$now,$checkedin,
440: $consumed_uniq);
441: }
442: }
443: return ($slotstatus,$datemsg);
444: }
445:
446: if ($slotstatus eq 'NOT_IN_A_SLOT'
447: && $checkedin ) {
448:
449: if ($got_grade) {
450: if ($blockip eq 'answer') {
451: return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
452: } else {
453: return ('SHOW_ANSWER');
454: }
455: } else {
456: return ('WAITING_FOR_GRADE');
457: }
458:
459: }
460:
461: if (($is_correct) && ($blockip ne 'answer')) {
462: if (($type eq 'problem') || ($type eq 'tool')) {
463: return ($status);
464: }
465: return ('SHOW_ANSWER');
466: }
467:
468: if ( $status eq 'CANNOT_ANSWER' &&
469: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT' &&
470: $slotstatus ne 'NEED_DIFFERENT_IP') ) {
471: return ($status,$datemsg);
472: }
473: return ($slotstatus,$datemsg,$slot_name,$returned_slot,$ipused);
474: }
475:
476: sub check_reservable_slot {
477: my ($slotstatus,$symb,$now,$checkedin,$consumed_uniq) = @_;
478: my $datemsg;
479: if ($slotstatus eq 'NOT_IN_A_SLOT') {
480: if ($env{'request.course.id'}) {
481: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
482: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
483: unless ($symb) {
484: ($symb)=&Apache::lonnet::whichuser();
485: }
486: $slotstatus = 'NOTRESERVABLE';
487: my ($reservable_now_order,$reservable_now,$reservable_future_order,
488: $reservable_future) =
489: &Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
490: if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
491: if (@{$reservable_now_order} > 0) {
492: if ((!$checkedin) || (ref($consumed_uniq) ne 'ARRAY')) {
493: $slotstatus = 'RESERVABLE';
494: $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
495: } else {
496: my ($uniqstart,$uniqend,$useslot);
497: if (ref($consumed_uniq) eq 'ARRAY') {
498: ($uniqstart,$uniqend)=@{$consumed_uniq};
499: }
500: foreach my $slot (reverse(@{$reservable_now_order})) {
501: if ($reservable_now->{$slot}{'uniqueperiod'} =~ /^(\d+)\,(\d+)$/) {
502: my ($new_uniq_start,$new_uniq_end) = ($1,$2);
503: next if (!
504: ($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
505: ($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
506: }
507: $useslot = $slot;
508: last;
509: }
510: if ($useslot) {
511: $slotstatus = 'RESERVABLE';
512: $datemsg = $reservable_now->{$useslot}{'endreserve'};
513: }
514: }
515: }
516: }
517: unless ($slotstatus eq 'RESERVABLE') {
518: if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
519: if (@{$reservable_future_order} > 0) {
520: if ((!$checkedin) || (ref($consumed_uniq) ne 'ARRAY')) {
521: $slotstatus = 'RESERVABLE_LATER';
522: $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
523: } else {
524: my ($uniqstart,$uniqend,$useslot);
525: if (ref($consumed_uniq) eq 'ARRAY') {
526: ($uniqstart,$uniqend)=@{$consumed_uniq};
527: }
528: foreach my $slot (@{$reservable_future_order}) {
529: if ($reservable_future->{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
530: my ($new_uniq_start,$new_uniq_end) = ($1,$2);
531: next if (!
532: ($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
533: ($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
534: }
535: $useslot = $slot;
536: last;
537: }
538: if ($useslot) {
539: $slotstatus = 'RESERVABLE_LATER';
540: $datemsg = $reservable_future->{$useslot}{'startreserve'};
541: }
542: }
543: }
544: }
545: }
546: }
547: }
548: return ($slotstatus,$datemsg);
549: }
550:
551: # JB, 9/24/2002: Any changes in this function may require a change
552: # in lonnavmaps::resource::getDateStatus.
553: sub check_access {
554: my ($id,$symb) = @_;
555: my $date ='';
556: my $status;
557: my $datemsg = '';
558: my $lastdate = '';
559: my $type;
560: my $passed;
561:
562: if ($env{'request.state'} eq "construct") {
563: if ($env{'form.problemstate'}) {
564: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
565: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
566: && &hide_problem_status())) {
567: return ('CANNOT_ANSWER',
568: &mt('is in this state due to author settings.'));
569: }
570: } else {
571: return ($env{'form.problemstate'},
572: &mt('is in this state due to author settings.'));
573: }
574: }
575: &Apache::lonxml::debug("in construction ignoring dates");
576: $status='CAN_ANSWER';
577: $datemsg=&mt('is in under construction');
578: # return ($status,$datemsg);
579: }
580:
581: &Apache::lonxml::debug("checking for part :$id:");
582: &Apache::lonxml::debug("time:".time);
583:
584: unless ($symb) {
585: ($symb)=&Apache::lonnet::whichuser();
586: }
587: &Apache::lonxml::debug("symb:".$symb);
588: #if ($env{'request.state'} ne "construct" && $symb ne '') {
589: if ($env{'request.state'} ne "construct") {
590: my $idacc = &Apache::lonnet::EXT("resource.$id.acc",$symb);
591: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
592: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
593: $status='INVALID_ACCESS';
594: $date=&mt("can not be accessed from your location.");
595: return($status,$date);
596: }
597: if ($env{'form.grade_imsexport'}) {
598: if (($env{'request.course.id'}) &&
599: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
600: return ('SHOW_ANSWER');
601: }
602: }
603: foreach my $temp ("opendate","duedate","overduedate","answerdate") {
604: $lastdate = $date;
605: if ($temp eq 'duedate') {
606: $date = &due_date($id,$symb);
607: } elsif ($temp eq 'overduedate') {
608: $date = &overdue_date($id,$symb);
609: } else {
610: $date = &Apache::lonnet::EXT("resource.$id.$temp",$symb);
611: }
612:
613: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb);
614: if ($thistype =~ /^(con_lost|no_such_host)/ ||
615: $date =~ /^(con_lost|no_such_host)/) {
616: $status='UNAVAILABLE';
617: $date=&mt("may open later.");
618: return($status,$date);
619: }
620: if ($thistype eq 'date_interval') {
621: if ($temp eq 'opendate') {
622: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date;
623: }
624: if ($temp eq 'answerdate') {
625: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date;
626: }
627: }
628: &Apache::lonxml::debug("found :$date: for :$temp:");
629: if ($date eq '') {
630: $date = &mt("an unknown date"); $passed = 0;
631: } elsif ($date eq 'con_lost') {
632: $date = &mt("an indeterminate date"); $passed = 0;
633: } else {
634: if (time < $date) { $passed = 0; } else { $passed = 1; }
635: $date = &Apache::lonlocal::locallocaltime($date);
636: }
637: if (!$passed) { $type=$temp; last; }
638: }
639: &Apache::lonxml::debug("have :$type:$passed:");
640: if ($passed) {
641: $status='SHOW_ANSWER';
642: $datemsg=$date;
643: } elsif ($type eq 'opendate') {
644: $status='CLOSED';
645: $datemsg = &mt('will open on [_1]',$date);
646: } elsif ($type eq 'duedate') {
647: $status='CAN_ANSWER';
648: $datemsg = &mt('is due at [_1]',$date);
649: } elsif ($type eq 'overduedate') {
650: $status='CAN_ANSWER';
651: $datemsg = &mt('past-due grace period until [_1]',$date);
652: } elsif ($type eq 'answerdate') {
653: $status='CLOSED';
654: $datemsg = &mt('was due on [_1], and answers will be available on [_2]',
655: $lastdate,$date);
656: }
657: }
658: if ($status eq 'CAN_ANSWER' ||
659: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
660: #check #tries, and if correct.
661: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
662: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb);
663: if ( $tries eq '' ) { $tries = '0'; }
664: if ( $maxtries eq '' &&
665: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
666: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
667: # if (correct and show prob status) or excused then CANNOT_ANSWER
668: if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
669: && (&show_problem_status()) ) {
670: if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
671: (&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) {
672: $status = 'CANNOT_ANSWER';
673: }
674: } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
675: $status = 'CANNOT_ANSWER';
676: }
677: if ($status eq 'CANNOT_ANSWER'
678: && &show_answer_problem_status()) {
679: $status = 'SHOW_ANSWER';
680: }
681: }
682: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
683: my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb);
684: &Apache::lonxml::debug("looking for interval @interval");
685: if ($interval[0]=~ /^\d+/) {
686: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
687: &Apache::lonxml::debug("looking for accesstime $first_access");
688: if (!$first_access) {
689: $status='NOT_YET_VIEWED';
690: my $due_date = &due_date($id,$symb);
691: my $seconds_left = $due_date - time;
692: my ($timelimit) = ($interval[0] =~ /^(\d+)/);
693: if ($seconds_left > $timelimit || $due_date eq '') {
694: $seconds_left = $timelimit;
695: }
696: $datemsg=&seconds_to_human_length($seconds_left);
697: }
698: }
699: }
700:
701: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
702: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
703: # return ('UNCHECKEDOUT','needs to be checked out');
704: #}
705:
706: &Apache::lonxml::debug("sending back :$status:$datemsg:");
707: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
708: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
709: $status='CAN_ANSWER';
710: $datemsg=&mt('is closed but you are allowed to view it');
711: }
712:
713: return ($status,$datemsg);
714: }
715: # this should work exactly like the copy in lonnavmaps.pm
716: sub due_date {
717: my ($part_id,$symb,$udom,$uname)=@_;
718: my $date;
719: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
720: $udom,$uname);
721: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
722: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
723: $udom,$uname);
724: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
725: if ($interval[0] =~ /\d+/) {
726: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
727: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
728: if (defined($first_access)) {
729: my ($timelimit) = ($interval[0] =~ /^(\d+)/);
730: my $interval = $first_access+$timelimit;
731: $date = (!$due_date || $interval < $due_date) ? $interval
732: : $due_date;
733: } else {
734: $date = $due_date;
735: }
736: } else {
737: $date = $due_date;
738: }
739: return $date;
740: }
741:
742: sub overdue_date {
743: my ($part_id,$symb,$udom,$uname)=@_;
744: my $date;
745: my $duedate= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
746: $udom,$uname);
747: if ($duedate ne '') {
748: my $grace = &Apache::lonnet::EXT("resource.$part_id.grace",$symb,
749: $udom,$uname);
750: if ($grace) {
751: my $grace_end = (split(/,/,$grace))[-1];
752: my ($offset) = split(/:/,$grace_end,2);
753: if ($offset > 0) {
754: $date = $offset + $duedate;
755: }
756: }
757: }
758: return $date;
759: }
760:
761: sub partial_credit_overdue {
762: my ($part_id,$symb,$udom,$uname)=@_;
763: my $reduction;
764: my $duedate = &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
765: $udom,$uname);
766: if ($duedate) {
767: my $grace = &Apache::lonnet::EXT("resource.$part_id.grace",$symb,
768: $udom,$uname);
769: if ($grace) {
770: my $lateness = time - $duedate;
771: if ($lateness > 0) {
772: my ($start,$end,$startfrac,$endfrac,$usegrad);
773: $start = 0;
774: $startfrac = 1.0;
775: $usegrad = 0;
776: foreach my $item (split(/,/,$grace)) {
777: my ($offset,$frac,$grad) = split(/:/,$item);
778: if ($lateness > $offset) {
779: $start = $offset;
780: $startfrac = $frac;
781: next;
782: } elsif ($lateness <= $offset) {
783: $end = $offset;
784: $endfrac = $frac;
785: $usegrad = $grad;
786: last;
787: }
788: }
789: if ($end) {
790: if (($end == $start) || ($startfrac == $endfrac)) {
791: $reduction = $endfrac;
792: } elsif ($end - $start > 0) {
793: if (($endfrac <= 1.0) && ($endfrac >= 0)) {
794: $reduction = $endfrac;
795: if ($usegrad) {
796: my $decline = $startfrac - $endfrac;
797: my $fraction = ($lateness - $start)/($end - $start);
798: if (($fraction <= 1) && ($fraction >= 0)) {
799: my $value = $startfrac - ($decline*$fraction);
800: $reduction = sprintf("%.2f", $value);
801: }
802: }
803: }
804: }
805: }
806: }
807: }
808: }
809: return $reduction;
810: }
811:
812: sub seconds_to_human_length {
813: my ($length)=@_;
814:
815: my $seconds=$length%60; $length=int($length/60);
816: my $minutes=$length%60; $length=int($length/60);
817: my $hours=$length%24; $length=int($length/24);
818: my $days=$length;
819:
820: my $timestr;
821: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
822: if ($hours > 0) { $timestr.=($timestr?", ":"").
823: &mt('[quant,_1,hour]',$hours); }
824: if ($minutes > 0) { $timestr.=($timestr?", ":"").
825: &mt('[quant,_1,minute]',$minutes); }
826: if ($seconds > 0) { $timestr.=($timestr?", ":"").
827: &mt('[quant,_1,second]',$seconds); }
828: return $timestr;
829: }
830:
831: sub showhash {
832: my (%hash) = @_;
833: &showhashsubset(\%hash,'.');
834: return '';
835: }
836:
837: sub showarray {
838: my ($array)=@_;
839: my $string="(";
840: foreach my $elm (@{ $array }) {
841: if (ref($elm) eq 'ARRAY') {
842: $string.=&showarray($elm);
843: } elsif (ref($elm) eq 'HASH') {
844: $string.= "HASH --- \n<br />";
845: $string.= &showhashsubset($elm,'.');
846: } else {
847: $string.="$elm,"
848: }
849: }
850: chop($string);
851: $string.=")";
852: return $string;
853: }
854:
855: sub showhashsubset {
856: my ($hash,$keyre) = @_;
857: my $resultkey;
858: foreach $resultkey (sort(keys(%$hash))) {
859: if ($resultkey !~ /$keyre/) { next; }
860: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
861: &Apache::lonxml::debug("$resultkey ---- ".
862: &showarray($$hash{$resultkey}));
863: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
864: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
865: &showhashsubset($$hash{$resultkey},'.');
866: } else {
867: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
868: }
869: }
870: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
871: return '';
872: }
873:
874: sub setuppermissions {
875: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
876: unless ($Apache::lonhomework::browse eq 'F') {
877: $Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
878: }
879: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
880: if (! $viewgrades &&
881: exists($env{'request.course.sec'}) &&
882: $env{'request.course.sec'} !~ /^\s*$/) {
883: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
884: '/'.$env{'request.course.sec'});
885: if ($viewgrades) {
886: $Apache::lonhomework::viewgradessec = $env{'request.course.sec'};
887: }
888: }
889: $Apache::lonhomework::viewgrades = $viewgrades;
890:
891: if ($Apache::lonhomework::browse eq 'F' &&
892: $env{'form.devalidatecourseresdata'} eq 'on') {
893: my (undef,$courseid) = &Apache::lonnet::whichuser();
894: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
895: $env{"course.$courseid.domain"});
896: }
897:
898: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
899: if (! $modifygrades &&
900: exists($env{'request.course.sec'}) &&
901: $env{'request.course.sec'} !~ /^\s*$/) {
902: $modifygrades =
903: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
904: '/'.$env{'request.course.sec'});
905: if ($modifygrades) {
906: $Apache::lonhomework::modifygradessec = $env{'request.course.sec'};
907: }
908: }
909: $Apache::lonhomework::modifygrades = $modifygrades;
910:
911: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
912: if (! $queuegrade &&
913: exists($env{'request.course.sec'}) &&
914: $env{'request.course.sec'} !~ /^\s*$/) {
915: $queuegrade =
916: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
917: '/'.$env{'request.course.sec'});
918: }
919: $Apache::lonhomework::queuegrade = $queuegrade;
920: return '';
921: }
922:
923: sub unset_permissions {
924: undef($Apache::lonhomework::queuegrade);
925: undef($Apache::lonhomework::modifygrades);
926: undef($Apache::lonhomework::modifygradessec);
927: undef($Apache::lonhomework::viewgrades);
928: undef($Apache::lonhomework::viewgradessec);
929: undef($Apache::lonhomework::browse);
930: }
931:
932: sub setupheader {
933: my $request=$_[0];
934: &Apache::loncommon::content_type($request,'text/html');
935: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
936: &Apache::loncommon::no_cache($request);
937: }
938: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
939: # 'lastrevisiondate'));
940: $request->send_http_header;
941: return OK if $request->header_only;
942: return ''
943: }
944:
945: sub handle_save_or_undo {
946: my ($request,$problem,$result,$getobjref) = @_;
947:
948: my $file = &Apache::lonnet::filelocation("",$request->uri);
949: my $filebak =$file.".bak";
950: my $filetmp =$file.".tmp";
951: my $error=0;
952: if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
953: my $error=0;
954: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
955: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
956: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
957: if (!$error) {
958: &Apache::lonxml::info("<p><b>".
959: &mt("Undid changes, Switched [_1] and [_2]",
960: '<span class="LC_filename">'.$filebak.
961: '</span>',
962: '<span class="LC_filename">'.$file.
963: '</span>')."</b></p>");
964: } else {
965: &Apache::lonxml::info("<p><span class=\"LC_error\">".
966: &mt("Unable to undo, unable to switch [_1] and [_2]",
967: '<span class="LC_filename">'.
968: $filebak.'</span>',
969: '<span class="LC_filename">'.
970: $file.'</span>')."</span></p>");
971: $error=1;
972: }
973: } else {
974: &Apache::lonnet::correct_line_ends($result);
975:
976: my $fs=Apache::File->new(">$filebak");
977: if (defined($fs)) {
978: print $fs $$problem;
979: } else {
980: &Apache::lonxml::info("<span class=\"LC_error\">".
981: &mt("Unable to make backup [_1]",
982: '<span class="LC_filename">'.
983: $filebak.'</span>')."</span>");
984: $error=2;
985: }
986: my $fh=Apache::File->new(">$file");
987: if (defined($fh)) {
988: print $fh $$result;
989: if (ref($getobjref) eq 'SCALAR') {
990: if ($file =~ m{([^/]+)\.(html?)$}) {
991: my $fname = $1;
992: my $ext = $2;
993: my $path = $file;
994: $path =~ s/\Q$fname\E\.\Q$ext\E$//;
995: my (%allfiles,%codebase);
996: &Apache::lonnet::extract_embedded_items($file,\%allfiles,
997: \%codebase,$result);
998: if (keys(%allfiles) > 0) {
999: my $url = $request->uri;
1000: my $state = <<STATE;
1001: <input type="hidden" name="action" value="upload_embedded" />
1002: <input type="hidden" name="url" value="$url" />
1003: STATE
1004: $$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
1005: "<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
1006: "<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
1007: &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
1008: {'error_on_invalid_names' => 1,
1009: 'ignore_remote_references' => 1,});
1010: }
1011: }
1012: }
1013: } else {
1014: &Apache::lonxml::info('<span class="LC_error">'.
1015: &mt("Unable to write to [_1]",
1016: '<span class="LC_filename">'.
1017: $file.'</span>').
1018: '</span>');
1019: $error|=4;
1020: }
1021: }
1022: return $error;
1023: }
1024:
1025: sub analyze_header {
1026: my ($request) = @_;
1027: my $js = &Apache::lonxml::setmode_javascript();
1028:
1029: # Breadcrumbs
1030: my $text = 'Authoring Space';
1031: my $href = &Apache::loncommon::authorspace($request->uri);
1032: if ($env{'request.course.id'}) {
1033: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1034: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1035: if ($href eq "/priv/$cdom/$cnum/") {
1036: $text = 'Course Authoring Space';
1037: }
1038: }
1039: my $brcrum = [{'href' => $href,
1040: 'text' => $text},
1041: {'href' => '',
1042: 'text' => 'Problem Testing'},
1043: {'href' => '',
1044: 'text' => 'Analyzing a problem'}];
1045:
1046: my $result =
1047: &Apache::loncommon::start_page('Analyzing a problem',
1048: $js,
1049: {'bread_crumbs' => $brcrum,})
1050: .&Apache::loncommon::head_subbox(
1051: &Apache::loncommon::CSTR_pageheader());
1052: my %lt = &Apache::lonlocal::texthash(
1053: edit => 'Edit',
1054: editxml => 'EditXML',
1055: );
1056: $result .=
1057: '<form name="lonhomework" method="post" action="'.
1058: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1059: '<input type="hidden" name="problemmode" value="'.
1060: $env{'form.problemmode'}.'" />'.
1061: &Apache::structuretags::remember_problem_state().'
1062: <div class="LC_edit_problem_analyze_header">';
1063: my %editors = &Apache::loncommon::permitted_editors();
1064: foreach my $item ('editxml','edit') {
1065: next unless ($editors{$item});
1066: $result .= '<input type="button" name="submitmode" value="'.$lt{$item}.'" '.
1067: 'onclick="javascript:setmode(this.form,'."'$item'".')" />'.
1068: "\n";
1069: }
1070: $result .=
1071: '<hr />
1072: <input type="button" name="submitmode" value="'.&mt("View").'" '.
1073: 'onclick="javascript:setmode(this.form,'."'view'".')" />
1074: <hr />
1075: </div>'
1076: .&Apache::lonxml::message_location().
1077: '</form>';
1078: &Apache::lonxml::add_messages(\$result);
1079: $request->print($result);
1080: $request->rflush();
1081: }
1082:
1083: sub analyze_footer {
1084: my ($request) = @_;
1085: $request->print(&Apache::loncommon::end_page());
1086: $request->rflush();
1087: }
1088:
1089: sub analyze {
1090: my ($request,$file) = @_;
1091: &Apache::lonxml::debug("Analyze");
1092: my $result;
1093: my %overall;
1094: my %seedexample;
1095: my %allparts;
1096: my $rndseed=$env{'form.rndseed'};
1097: &analyze_header($request);
1098: my %prog_state=
1099: &Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
1100: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1101: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
1102: if (&Apache::loncommon::connection_aborted($request)) { return; }
1103: my $thisseed=$i+$rndseed;
1104: my $subresult=&Apache::lonnet::ssi($request->uri,
1105: ('grade_target' => 'analyze'),
1106: ('rndseed' => $thisseed));
1107: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
1108: my %analyze=&Apache::lonnet::str2hash($subresult);
1109: my @parts;
1110: if (ref($analyze{'parts'}) eq 'ARRAY') {
1111: @parts=@{ $analyze{'parts'} };
1112: }
1113: foreach my $part (@parts) {
1114: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1115: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
1116: $analyze{$part.'.type'} eq 'stringresponse' ||
1117: $analyze{$part.'.type'} eq 'formularesponse' ) {
1118: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
1119: my $i=0;
1120: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
1121: push( @{ $overall{$part.'.answer'}[$i] },
1122: $answer_part);
1123: my $concatanswer= join("\0",@{ $answer_part });
1124: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
1125: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
1126: }
1127: $seedexample{join("\0",$part,$i,@{$answer_part})}=
1128: $thisseed;
1129: $i++;
1130: }
1131: }
1132: if (!keys(%{ $analyze{$part.'.answer'} })) {
1133: my $answer_part =
1134: ['<span class="LC_error">'.&mt('Error').'</span>'];
1135: $seedexample{join("\0",$part,0,@{$answer_part})}=
1136: $thisseed;
1137: push( @{ $overall{$part.'.answer'}[0] },
1138: $answer_part);
1139: }
1140: }
1141: }
1142: }
1143: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
1144: $request->print('<hr />'
1145: .'<h3>'
1146: .&mt('List of possible answers')
1147: .'</h3>'
1148: );
1149: foreach my $part (sort(keys(%allparts))) {
1150: if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
1151: (@{$overall{$part.'.answer'}} > 0)) {
1152: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
1153: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
1154: $request->print(&Apache::loncommon::start_data_table()
1155: .&Apache::loncommon::start_data_table_header_row()
1156: .'<th colspan="'.($num_cols+1).'">'
1157: .&mt('Part').' '.$part
1158: );
1159: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
1160: $request->print(' '.&mt('Answer [_1]',$i+1));
1161: }
1162: $request->print('</th>'
1163: .&Apache::loncommon::end_data_table_header_row()
1164: );
1165: my %frequency;
1166: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
1167: $frequency{join("\0",@{ $answer })}++;
1168: }
1169: $request->print(&Apache::loncommon::start_data_table_header_row()
1170: .'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
1171: .'<th>'.&mt('Frequency').'<br />'
1172: .'('.&mt('click for example').')</th>'
1173: .&Apache::loncommon::end_data_table_header_row()
1174: );
1175: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
1176: $request->print(&Apache::loncommon::start_data_table_row()
1177: .'<td>'
1178: .join('</td><td>',split("\0",$answer))
1179: .'</td>'
1180: .'<td>'
1181: .'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
1182: .'</td>'
1183: .&Apache::loncommon::end_data_table_row()
1184: );
1185: }
1186: $request->print(&Apache::loncommon::end_data_table());
1187: }
1188: } else {
1189: $request->print('<p class="LC_warning">'
1190: .&mt('Response [_1] is not analyzable at this time.',$part)
1191: .'</p>'
1192: );
1193: }
1194: }
1195: if (scalar(keys(%allparts)) == 0 ) {
1196: $request->print('<p class="LC_warning">'
1197: .&mt('Found no analyzable responses in this problem.'
1198: .' Currently only Numerical, Formula and String response styles are supported.')
1199: .'</p>'
1200: );
1201: }
1202: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1203: &analyze_footer($request);
1204: &Apache::lonhomework::showhash(%overall);
1205: return $result;
1206: }
1207:
1208: {
1209: my $show_problem_status;
1210: sub reset_show_problem_status {
1211: undef($show_problem_status);
1212: }
1213:
1214: sub set_show_problem_status {
1215: my ($new_status) = @_;
1216: $show_problem_status = lc($new_status);
1217: }
1218:
1219: sub hide_problem_status {
1220: return ($show_problem_status eq 'no'
1221: || $show_problem_status eq 'no_feedback_ever');
1222: }
1223:
1224: sub show_problem_status {
1225: return ($show_problem_status eq 'yes'
1226: || $show_problem_status eq 'answer'
1227: || $show_problem_status eq '');
1228: }
1229:
1230: sub show_some_problem_status {
1231: return ($show_problem_status eq 'no');
1232: }
1233:
1234: sub show_no_problem_status {
1235: return ($show_problem_status eq 'no_feedback_ever');
1236: }
1237:
1238: sub show_answer_problem_status {
1239: return ($show_problem_status eq 'answer');
1240: }
1241: }
1242:
1243: sub editxmlmode {
1244: my ($request,$file) = @_;
1245: my $result;
1246: my $problem=&Apache::lonnet::getfile($file);
1247: if ($problem eq -1) {
1248: &Apache::lonxml::error(
1249: '<p class="LC_error">'
1250: .&mt('Unable to find [_1]',
1251: '<span class="LC_filename">'.$file.'</span>')
1252: .'</p>');
1253:
1254: $problem='';
1255: }
1256: if (($env{'form.problemmode'} eq 'saveeditxml') ||
1257: ($env{'form.problemmode'} eq 'saveviewxml') ||
1258: ($env{'form.problemmode'} eq 'undoxml')) {
1259: my $error=&handle_save_or_undo($request,\$problem,
1260: \$env{'form.editxmltext'});
1261: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
1262: }
1263: &Apache::lonhomework::showhashsubset(\%env,'^form');
1264: if ($env{'form.problemmode'} eq 'saveviewxml') {
1265: &Apache::lonhomework::showhashsubset(\%env,'^form');
1266: $env{'form.problemmode'}='view';
1267: &renderpage($request,$file);
1268: } else {
1269: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1270: if ($cols > 80) { $cols = 80; }
1271: if ($cols < 70) { $cols = 70; }
1272: if ($rows < 20) { $rows = 20; }
1273: my $js =
1274: &Apache::edit::js_change_detection().
1275: &Apache::loncommon::resize_textarea_js().
1276: &Apache::lonxml::setmode_javascript().
1277: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
1278:
1279: # Breadcrumbs
1280: my $text = 'Authoring Space';
1281: my $href = &Apache::loncommon::authorspace($request->uri);
1282: if ($env{'request.course.id'}) {
1283: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1284: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1285: if ($href eq "/priv/$cdom/$cnum/") {
1286: $text = 'Course Authoring Space';
1287: }
1288: }
1289: my $brcrum = [{'href' => $href,
1290: 'text' => $text},
1291: {'href' => '',
1292: 'text' => 'Problem Editing'}];
1293:
1294: my $start_page =
1295: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
1296: {'no_auto_mt_title' => 1,
1297: 'only_body' => 0,
1298: 'add_entries' => {
1299: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1300: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1301: },
1302: 'bread_crumbs' => $brcrum,
1303: });
1304:
1305: $result=$start_page
1306: .&Apache::loncommon::head_subbox(
1307: &Apache::loncommon::CSTR_pageheader());
1308: $result.=&renderpage($request,$file,['no_output_web'],1).
1309: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
1310: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1311: &Apache::structuretags::remember_problem_state().'
1312: <div class="LC_edit_problem_header">
1313: <div class="LC_edit_problem_header_title">'.
1314: &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
1315: '</div><div class="LC_edit_actionbar" id="actionbar">';
1316:
1317: $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
1318: &Apache::structuretags::problem_edit_buttons('editxml');
1319: $result.='<div>';
1320:
1321: $result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
1322:
1323: my $nocodemirror = &Apache::loncommon::nocodemirror();
1324: unless ($nocodemirror) {
1325: # dropdown menus
1326: $result .= Apache::lonmenu::create_submenu("#", "",
1327: &mt("Problem Templates"), template_dropdown_datastructure());
1328:
1329: $result .= Apache::lonmenu::create_submenu("#", "",
1330: &mt("Response Types"), responseblock_dropdown_datastructure());
1331:
1332: $result .= Apache::lonmenu::create_submenu("#", "",
1333: &mt("Conditional Blocks"), conditional_scripting_datastructure());
1334:
1335: $result .= Apache::lonmenu::create_submenu("#", "",
1336: &mt("Miscellaneous"), misc_datastructure());
1337: }
1338:
1339: $result .= Apache::lonmenu::create_submenu("#", "",
1340: &mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
1341: '" style="vertical-align:text-bottom; height: auto; margin:0; "/>',
1342: helpmenu_datastructure(),"");
1343:
1344: $result.="</ol></div>";
1345:
1346: $result .= '</div></div>' .
1347: &Apache::lonxml::message_location() .
1348: &Apache::loncommon::xmleditor_js() .
1349: '<textarea ' . &Apache::edit::element_change_detection() .
1350: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
1351: ' name="editxmltext" id="LC_editxmltext">' .
1352: &HTML::Entities::encode($problem,'<>&"') .
1353: '</textarea> <div id="LC_aftertextarea"> </div> </form>';
1354:
1355: my $resource = $env{'request.ambiguous'};
1356: unless ($nocodemirror) {
1357: $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
1358: <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
1359: <script>
1360: CodeMirror.defineMode("mixedmode", function(config) {
1361: return CodeMirror.multiplexingMode(
1362: CodeMirror.getMode(config, "xml"),
1363: {
1364: open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
1365: mode: CodeMirror.getMode(config, "perl"),
1366: delimStyle: "tag",
1367: }
1368: );
1369: });
1370: var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
1371: {
1372: mode: "mixedmode",
1373: lineWrapping: true,
1374: lineNumbers: true,
1375: tabSize: 4,
1376: indentUnit: 4,
1377:
1378: autoCloseTags: true,
1379: autoCloseBrackets: true,
1380: height: "auto",
1381: styleActiveLine: true,
1382:
1383: extraKeys: {
1384: "Tab": "indentMore",
1385: "Shift-Tab": "indentLess",
1386: }
1387: });
1388: restoreScrollPosition("'.$resource.'");
1389: </script>';
1390: }
1391:
1392: $result .= &Apache::loncommon::end_page();
1393: &Apache::lonxml::add_messages(\$result);
1394: $request->print($result);
1395: }
1396: return '';
1397: }
1398:
1399: #
1400: # Render the page in whatever target desired.
1401: #
1402: sub renderpage {
1403: my ($request,$file,$targets,$return_string,$donebuttonmsg,$viewasuser,$symb) = @_;
1404:
1405: my @targets = @{$targets || [&get_target()]};
1406: &Apache::lonhomework::showhashsubset(\%env,'form.');
1407: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1408:
1409: my $overall_result;
1410: foreach my $target (@targets) {
1411: # FIXME need to do something intelligent when a problem goes
1412: # from viewable to not viewable due to map conditions
1413: #&setuppermissions();
1414: #if ( $Apache::lonhomework::browse ne '2'
1415: # && $Apache::lonhomework::browse ne 'F' ) {
1416: # $request->print(" You most likely shouldn't see me.");
1417: #}
1418: #my $t0 = [&gettimeofday()];
1419: my $output=1;
1420: if ($target eq 'no_output_web') {
1421: $target = 'web'; $output=0;
1422: }
1423: my $problem=&Apache::lonnet::getfile($file);
1424: my $result;
1425: if ($problem eq -1) {
1426: $problem='';
1427: my $filename=(split('/',$file))[-1];
1428: my $error =
1429: '<p class="LC_error">'
1430: .&mt('Unable to find [_1]',
1431: '<span class="LC_filename">'.$filename.'</span>')
1432: ."</p>";
1433: $result.=
1434: &Apache::loncommon::simple_error_page($request,'Not available',
1435: $error,{'no_auto_mt_msg' => 1});
1436: return;
1437: }
1438:
1439: my %mystyle;
1440: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1441: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1442: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1443:
1444: if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
1445: $env{'request.user_in_effect'} = $viewasuser;
1446: }
1447:
1448: &Apache::lonxml::debug("Should be parsing now");
1449: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1450: &setup_vars($target),%mystyle);
1451: &finished_parsing();
1452: if (!$output) { $result = ''; }
1453: #$request->print("Result follows:");
1454: if ($target eq 'modified') {
1455: &handle_save_or_undo($request,\$problem,\$result);
1456: } else {
1457: if ($target eq 'analyze') {
1458: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1459: undef(%Apache::lonhomework::analyze);
1460: } elsif ($target eq 'web') {
1461: if ($donebuttonmsg) {
1462: $result =~ s{</body>}{};
1463: $result.= &Apache::loncommon::confirmwrapper(&Apache::lonhtmlcommon::confirm_success($donebuttonmsg,1))."\n</body>";
1464: }
1465: }
1466: #my $td=&tv_interval($t0);
1467: #if ( $Apache::lonxml::debug) {
1468: #$result =~ s:</body>::;
1469: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1470: #}
1471: # $request->print($result);
1472: $overall_result.=$result;
1473: if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
1474: my ($vuname,$vudom) = split(/:/,$viewasuser);
1475: $overall_result .= &Apache::grades::view_as_user($symb,$vuname,$vudom).
1476: '</body></html>';
1477: }
1478: # $request->rflush();
1479: }
1480: if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
1481: undef($env{'request.user_in_effect'});
1482: }
1483: #$request->print(":Result ends");
1484: #my $td=&tv_interval($t0);
1485: }
1486: if (!$return_string) {
1487: &Apache::lonxml::add_messages(\$overall_result);
1488: $request->print($overall_result);
1489: $request->rflush();
1490: } else {
1491: return $overall_result;
1492: }
1493: }
1494:
1495: sub finished_parsing {
1496: undef($Apache::lonhomework::parsing_a_problem);
1497: undef($Apache::lonhomework::parsing_a_task);
1498: }
1499:
1500: # function extracted from get_template_html
1501: # returns "key" -> list
1502: # key: path of template
1503: # value 1: title
1504: # value 2: category
1505: # value 3: name of help topic ???
1506: sub get_template_list{
1507: my ($extension) = @_;
1508:
1509: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1510: '/templates/*.'.$extension);
1511: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1512: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1513: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1514: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1515: return @files;
1516: }
1517:
1518: sub get_template_html {
1519: my ($extension) = @_;
1520: my $result;
1521: my @allnames;
1522: &Apache::lonxml::debug("Looking for :$extension:");
1523: my $glob_extension = $extension;
1524: if ($extension eq 'survey' || $extension eq 'exam') {
1525: $glob_extension = 'problem';
1526: }
1527: my @files = &get_template_list($extension);
1528: my ($midpoint,$seconddiv,$numfiles);
1529: my @noexamplelink = ('blank.problem','blank.library','script.library');
1530: $numfiles = 0;
1531: foreach my $file (@files) {
1532: next if ($file->[1] !~ /\S/);
1533: $numfiles ++;
1534: }
1535: if ($numfiles > 0) {
1536: $result = '<div class="LC_left_float">';
1537: $midpoint = int($numfiles/2);
1538: if ($numfiles%2) {
1539: $midpoint ++;
1540: }
1541: }
1542: my $count = 0;
1543: my $currentcategory='';
1544: my $first = 1;
1545: my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
1546: foreach my $file (@files) {
1547: next if ($file->[1] !~ /\S/);
1548: if ($file->[2] ne $currentcategory) {
1549: $currentcategory=$file->[2];
1550: if ((!$seconddiv) && ($count >= $midpoint)) {
1551: $result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
1552: $seconddiv = 1;
1553: } elsif (!$first) {
1554: $result.='</div>'."\n";
1555: } else {
1556: $first = 0;
1557: }
1558: $result.= '<div class="LC_Box">'."\n"
1559: .'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
1560: $count++;
1561: }
1562: $result .=
1563: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1564: $file->[1].'</label>';
1565: if ($file->[3]) {
1566: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1567: }
1568: # Provide example link
1569: my $filename=$file->[0];
1570: $filename=~s{^\Q$londocroot\E}{};
1571: if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
1572: $result .= ' <span class="LC_fontsize_small">'
1573: .&Apache::loncommon::modal_link(
1574: $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
1575: .'</span>';
1576: }
1577: $result .= '<br />'."\n";
1578: $count ++;
1579: }
1580: if ($numfiles > 0) {
1581: $result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1582: }
1583: return $result;
1584: }
1585:
1586: sub newproblem {
1587: my ($request) = @_;
1588:
1589: if ($env{'form.mode'} eq 'blank'){
1590: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1591: my $templatefilename =
1592: $request->dir_config('lonIncludes').'/templates/blank.problem';
1593: &File::Copy::copy($templatefilename,$dest);
1594: &renderpage($request,$dest);
1595: return;
1596: }
1597: my $errormsg;
1598: if ($env{'form.template'}) {
1599: my $file;
1600: my ($extension) = ($env{'form.template'} =~ /\.(\w+)$/);
1601: if ($extension) {
1602: my @files = &get_template_list($extension);
1603: foreach my $poss (@files) {
1604: if (ref($poss) eq 'ARRAY') {
1605: if ($env{'form.template'} eq $poss->[0]) {
1606: $file = $env{'form.template'};
1607: last;
1608: }
1609: }
1610: }
1611: if ($file) {
1612: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1613: &File::Copy::copy($file,$dest);
1614: &renderpage($request,$dest);
1615: return;
1616: } else {
1617: $errormsg = '<p class="LC_error">'.&mt('Invalid template file.').'</p>';
1618: }
1619: } else {
1620: $errormsg = '<p class="LC_error">'.&mt('Invalid template file; template needs to be a .problem, .library, or .task file.').'</p>';
1621: }
1622: }
1623:
1624: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1625: &Apache::lonxml::debug("Looking for :$extension:");
1626: my $templatelist=&get_template_html($extension);
1627: if ($env{'form.newfile'} && !$templatelist) {
1628: # no templates found
1629: my $templatefilename =
1630: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1631: &Apache::lonxml::debug("$templatefilename");
1632: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1633: &File::Copy::copy($templatefilename,$dest);
1634: &renderpage($request,$dest);
1635: } else {
1636: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1637: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1638: my $instructions;
1639: my $text = 'Authoring Space';
1640: my $href = &Apache::loncommon::authorspace($request->uri);
1641: if ($env{'request.course.id'}) {
1642: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1643: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1644: if ($href eq "/priv/$cdom/$cnum/") {
1645: $text = 'Course Authoring Space';
1646: }
1647: }
1648: my $brcrum = [{'href' => $href,
1649: 'text' => $text},
1650: {'href' => '',
1651: 'text' => "Create New $extension"}];
1652: my $start_page =
1653: &Apache::loncommon::start_page("Create New $extension",
1654: undef,
1655: {'bread_crumbs' => $brcrum,});
1656: $request->print(
1657: $start_page
1658: .&Apache::loncommon::head_subbox(
1659: &Apache::loncommon::CSTR_pageheader())
1660: .'<h1>'.&mt("Creating a new $extension resource.")."</h1>
1661: $errormsg
1662: ".&mt("The requested file [_1] currently does not exist.",
1663: '<span class="LC_filename">'.$url.'</span>').'
1664: <p class="LC_info">
1665: '.&mt("To create a new $extension, select a template from the".
1666: " list below. Then click on the \"Create $extension\" button.").'
1667: </p><div><form action="'.$url.'" method="post">');
1668:
1669: if (defined($templatelist)) {
1670: $request->print($templatelist);
1671: }
1672: $request->print('<br /><input type="submit" name="newfile" value="'.
1673: &mt("Create $extension").'" />');
1674: $request->print('</form></div>'.&Apache::loncommon::end_page());
1675: }
1676: return;
1677: }
1678:
1679: sub update_construct_style {
1680: if ($env{'request.state'} eq "construct"
1681: && $env{'form.problemmode'} eq 'view'
1682: && defined($env{'form.submitted'})
1683: && !defined($env{'form.resetdata'})
1684: && !defined($env{'form.newrandomization'})) {
1685: if ((!$env{'form.style_file'} && $env{'construct.style'})
1686: ||$env{'form.clear_style_file'}) {
1687: &Apache::lonnet::delenv('construct.style');
1688: } elsif ($env{'form.style_file'}
1689: && $env{'construct.style'} ne $env{'form.style_file'}) {
1690: &Apache::lonnet::appenv({'construct.style' =>
1691: $env{'form.style_file'}});
1692: }
1693: }
1694: }
1695:
1696: #
1697: # Sets interval for current user so time left will be zero, either for the entire folder
1698: # containing the current resource, or just the resource, depending on value of first item
1699: # in interval array retrieved from EXT("resource.0.interval");
1700: #
1701: sub zero_timer {
1702: my ($symb) = @_;
1703: my ($hastimeleft,$first_access,$now);
1704: my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
1705: if (@interval > 1) {
1706: if ($interval[1] eq 'course') {
1707: return ('fail',&mt('Ending of timed events not supported for intervals set course-wide'));
1708: } else {
1709: my $now = time;
1710: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1711: if ($first_access > 0) {
1712: my ($timelimit,$donesuffix) = split(/_/,$interval[0],2);
1713: if ($donesuffix =~ /^done(?:|\:[^\:]+\:)(.*)$/) {
1714: my ($dummy,$proctor,$secret) = split(/_/,$1);
1715: if (($proctor) && ($secret ne '')) {
1716: my $key = $env{'form.LC_interval_done_proctorpass'};
1717: $key =~ s/^\s+//;
1718: $key =~ s/\s+$//;
1719: if ($env{'form.LC_interval_done_proctorpass'} ne $secret) {
1720: return ('fail',
1721: &mt('Incorrect key entered by proctor'));
1722: }
1723: }
1724: if ($first_access+$timelimit > $now) {
1725: my $done_time = $now - $first_access;
1726: my $snum = 1;
1727: if ($interval[1] eq 'map') {
1728: $snum = 2;
1729: }
1730: my $result =
1731: &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
1732: $snum,$done_time,
1733: 'date_interval',
1734: $env{'user.name'},
1735: $env{'user.domain'});
1736: if ($result eq '') {
1737: # Record action in "User Notes"
1738: &Apache::lonmsg::store_instructor_comment(
1739: 'Pressed Done button for symb:<br />'.$symb,
1740: $env{'user.name'}, $env{'user.domain'});
1741: return ('ok');
1742: } else {
1743: return ('fail',&mt('Error ending timed event: [_1]',$result));
1744: }
1745: } else {
1746: return ('fail',&mt('Timed event already ended'));
1747: }
1748: } else {
1749: return ('fail',&mt('Timed event can not be ended before the time limit'));
1750: }
1751: } else {
1752: return ('fail',&mt('Timer not yet started for this timed event'));
1753: }
1754: }
1755: } else {
1756: return ('fail',&mt('No timer in use'));
1757: }
1758: return();
1759: }
1760:
1761: sub handler {
1762: #my $t0 = [&gettimeofday()];
1763: my $request=$_[0];
1764:
1765: $Apache::lonxml::request=$request;
1766: $Apache::lonxml::debug=$env{'user.debug'};
1767: $env{'request.uri'}=$request->uri;
1768: &setuppermissions();
1769:
1770: # -------------------------------------- Flag and buffer for registered cleanup
1771: $registered_cleanup=0;
1772: undef(@Apache::lonhomework::ltipassback);
1773:
1774: my $file=&Apache::lonnet::filelocation("",$request->uri);
1775:
1776: #check if we know where we are
1777: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
1778: # if we are browsing we might not be able to know where we are
1779: if ($Apache::lonhomework::browse ne 'F' &&
1780: $env{'request.state'} ne "construct") {
1781: #should know where we are, so ask
1782: &unset_permissions();
1783: $request->internal_redirect('/adm/ambiguous');
1784: return OK;
1785: }
1786: }
1787: if (&setupheader($request)) {
1788: &unset_permissions();
1789: return OK;
1790: }
1791:
1792: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1793: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1794: my ($symb) = &Apache::lonnet::whichuser();
1795: &Apache::lonxml::debug('symb is '.$symb);
1796: if ($env{'request.state'} eq "construct") {
1797: if ( -e $file ) {
1798: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1799: ['problemmode']);
1800: if (!(defined $env{'form.problemmode'})) {
1801: #first visit to problem in construction space
1802: $env{'form.problemmode'}= 'view';
1803: &renderpage($request,$file);
1804: } elsif (($env{'form.problemmode'} eq 'editxml') ||
1805: ($env{'form.problemmode'} eq 'saveeditxml') ||
1806: ($env{'form.problemmode'} eq 'saveviewxml') ||
1807: ($env{'form.problemmode'} eq 'undoxml')) {
1808: my %editors = &Apache::loncommon::permitted_editors();
1809: if (($editors{'xml'}) || ($env{'form.problemmode'} eq 'saveviewxml') || ($env{'form.problemmode'} eq 'undoxml')) {
1810: &editxmlmode($request,$file);
1811: } else {
1812: &update_construct_style();
1813: &renderpage($request,$file);
1814: }
1815: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1816: &analyze($request,$file);
1817: } else {
1818: &update_construct_style();
1819: &renderpage($request,$file);
1820: }
1821: } else {
1822: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1823: ['mode']);
1824: # requested file doesn't exist in contruction space
1825: &newproblem($request);
1826: }
1827: } else {
1828: # Set the event timer to zero if the "done button" was clicked. The button is
1829: # part of the doneButton form created in lonmenu.pm
1830: my ($donebuttonresult,$donemsg,$viewasuser);
1831: if ($symb && $env{'form.LC_interval_done'} eq 'true') {
1832: ($donebuttonresult,$donemsg) = &zero_timer($symb);
1833: undef($env{'form.LC_interval_done'});
1834: undef($env{'form.LC_interval_done_proctorpass'});
1835: }
1836: if (($env{'form.LC_viewas'} ne '') && $symb && $env{'request.course.id'} &&
1837: ($Apache::lonhomework::viewgrades || $Apache::lonhomework::modifygrades)) {
1838: if ($env{'form.LC_viewas'} =~ /^($match_username):($match_domain)$/) {
1839: my ($possuname,$possudom) = ($1,$2);
1840: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1841: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1842: my ($canview,$posssec);
1843: if ($env{'request.course.sec'} ne '') {
1844: if ($Apache::lonhomework::modifygradessec eq $env{'request.course.sec'}) {
1845: $canview = 'section';
1846: $posssec = $env{'request.course.sec'};
1847: } elsif ($Apache::lonhomework::viewgradessec eq $env{'request.course.sec'}) {
1848: $canview = 'section';
1849: $posssec = $env{'request.course.sec'};
1850: }
1851: }
1852: my $crstype = &Apache::loncommon::course_type();
1853: if (&Apache::loncourseuser::is_course_user($possudom,$possuname,$cdom,$cnum,
1854: $canview,$crstype,$posssec)) {
1855: $viewasuser = $possuname.':'.$possudom;
1856: }
1857: }
1858: undef($env{'form.LC_viewas'});
1859: }
1860: # just render the page normally outside of construction space
1861: &Apache::lonxml::debug("not construct");
1862: &renderpage($request,$file,undef,undef,$donemsg,$viewasuser,$symb);
1863: if (@Apache::lonhomework::ltipassback) {
1864: unless ($registered_cleanup) {
1865: my $handlers = $request->get_handlers('PerlCleanupHandler');
1866: $request->set_handlers('PerlCleanupHandler' =>
1867: [\&do_ltipassback,@{$handlers}]);
1868: $registered_cleanup=1;
1869: }
1870: }
1871: }
1872: #my $td=&tv_interval($t0);
1873: #&Apache::lonxml::debug("Spent $td seconds processing");
1874: # always turn off debug messages
1875: $Apache::lonxml::debug=0;
1876: &unset_permissions();
1877: return OK;
1878:
1879: }
1880:
1881: sub template_dropdown_datastructure {
1882: # gathering the all templates and their path, title, category and help topic
1883: my @templates = get_template_list('problem');
1884: # template category => title
1885: my %tmplthash = ();
1886: # template title => path
1887: my %tmpltcontent = ();
1888:
1889: foreach my $template (@templates){
1890: # put in hash if the template is not empty
1891: unless ($template->[1] eq ''){
1892: push(@{$tmplthash{$template->[2]}}, $template->[1]);
1893: push(@{$tmpltcontent{$template->[1]}},$template->[0]);
1894: }
1895: }
1896:
1897: my $catList = [];
1898: foreach my $cat (sort keys %tmplthash) {
1899: my $catItems = [];
1900: foreach my $title (sort @{$tmplthash{$cat}}) {
1901: my $path = $tmpltcontent{$title}->[0];
1902: my $code;
1903: open(FH, "<$path");
1904: while(<FH>){
1905: $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
1906: }
1907: close(FH);
1908:
1909: if ($code ne '') {
1910: my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
1911: my $currItem = [$href, $title, undef];
1912: push @{$catItems}, $currItem;
1913: }
1914: }
1915: push @{$catList}, [$catItems, $cat, undef];
1916: }
1917:
1918: return $catList;
1919: }
1920:
1921: sub responseblock_dropdown_datastructure {
1922:
1923: my $mathCat = [
1924: [
1925: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
1926: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
1927: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
1928: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
1929: ],
1930: &mt("Math"),
1931: undef
1932: ];
1933:
1934: my $miscCat = [
1935: [
1936: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
1937: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
1938: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
1939: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
1940: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
1941: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef],
1942: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
1943: ],
1944: &mt("Miscellaneous"),
1945: undef
1946: ];
1947:
1948: my $chemCat = [
1949: [
1950: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
1951: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
1952: ],
1953: &mt("Chemistry"),
1954: undef
1955: ];
1956:
1957: my $textCat = [
1958: [
1959: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
1960: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
1961: ],
1962: &mt("Text"),
1963: undef
1964: ];
1965:
1966: return [$mathCat, $miscCat, $chemCat, $textCat];
1967: }
1968:
1969:
1970: sub conditional_scripting_datastructure {
1971: # TODO: corresponding routines should be used for the javascript:insertText parts
1972: # instead of the placeholder routine default_xml_tag with the tags
1973: # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
1974: # returns the corresponding content for this case
1975:
1976: #TODO translated is currently temporarily here, another solution should be found where the
1977: # needed string can be retrieved
1978:
1979: my $translatedTag = '
1980: <translated>
1981: <lang which="en"></lang>
1982: <lang which="default"></lang>
1983: </translated>';
1984: return [
1985: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
1986: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
1987: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
1988: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
1989: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
1990: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
1991: ];
1992: }
1993:
1994: sub misc_datastructure {
1995: return [
1996: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
1997: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
1998: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
1999: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
2000: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
2001: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
2002: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
2003: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
2004: ];
2005: }
2006:
2007: # helper routine for the datastructure building subroutines
2008: sub default_xml_tag {
2009: my ($tag) = @_;
2010: return "\n<$tag></$tag>";
2011: }
2012:
2013:
2014: sub helpmenu_datastructure {
2015:
2016: # filename, title, width, height
2017: my $helpers = [
2018: ['Problem_LON-CAPA_Functions.hlp', &mt('Script Functions'), 800, 600],
2019: ['Greek_Symbols.hlp', &mt('Greek Symbols'), 500, 600],
2020: ['Other_Symbols.hlp', &mt('Other Symbols'), 500, 600],
2021: ['Authoring_Output_Tags.hlp', &mt('Output Tags'), 800, 600],
2022: ['Authoring_Multilingual_Problems.hlp',
2023: &mt('How to create problems in different languages'), 800, 600],
2024: ['loncapa.html', &mt('Language reference'), 800, 600],
2025: ];
2026:
2027: my $help_structure = [];
2028:
2029: foreach my $count (0..(scalar(@{$helpers})-1)) {
2030: my $filename = $helpers->[$count]->[0];
2031: my $title = $helpers->[$count]->[1];
2032: my $width = $helpers->[$count]->[2];
2033: my $height = $helpers->[$count]->[3];
2034: if ($width eq '') {
2035: $width = 500;
2036: }
2037: if ($height eq '') {
2038: $height = 600;
2039: }
2040: my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename',$width,$height,'yes');");
2041: push @{$help_structure}, [$href, $title, undef];
2042: }
2043:
2044: return $help_structure;
2045: }
2046:
2047: # we need substitution to not break javascript code
2048: sub convert_for_js {
2049: my $return = shift;
2050: $return =~ s|script|ESCAPEDSCRIPT|g;
2051: $return =~ s|\\|\\\\|g;
2052: $return =~ s|\n|\\r\\n|g;
2053: $return =~ s|'|\\'|g;
2054: $return =~ s|'|\\'|g;
2055: return $return;
2056: }
2057:
2058: sub do_ltipassback {
2059: if (@Apache::lonhomework::ltipassback) {
2060: my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
2061: my $ip = &Apache::lonnet::get_host_ip($lonhost);
2062: foreach my $item (@Apache::lonhomework::ltipassback) {
2063: &Apache::lonhomework::run_passback($item,$lonhost,$ip);
2064: }
2065: undef(@Apache::lonhomework::ltipassback);
2066: }
2067: return OK;
2068: }
2069:
2070: sub run_passback {
2071: my ($item,$lonhost,$ip) = @_;
2072: if (ref($item) eq 'HASH') {
2073: if ((ref($item->{'lti'}) eq 'HASH') && ($item->{'cid'} =~ /^($match_domain)_($match_courseid)$/)) {
2074: my ($cdom,$cnum) = ($1,$2);
2075: my $msgformat = $item->{'lti'}->{'passbackformat'};
2076: my $sigmethod = 'HMAC-SHA1';
2077: my $ltinum = $item->{'ltinum'};
2078: my $id = $item->{'pbid'};
2079: my $url = $item->{'pburl'};
2080: my $type = $item->{'pbtype'};
2081: my $pbscope = $item->{'pbscope'};
2082: my $map = $item->{'pbmap'};
2083: my $symb = $item->{'pbsymb'};
2084: my $uname = $item->{'uname'};
2085: my $udom = $item->{'udom'};
2086: my $uhome = $item->{'uhome'};
2087: my $usec = $item->{'usec'};
2088: my $keynum = $item->{'lti'}->{'cipher'};
2089: my $crsdef = $item->{'crsdef'};
2090: my $scoretype = $item->{'format'};
2091: my $scope = $item->{'scope'};
2092: my $clientip = $item->{'clientip'};
2093: my ($total,$possible,%total_by_symb,%possible_by_symb);
2094: if ((exists($item->{'total_s'})) && (ref($item->{'total_s'}) eq 'HASH')) {
2095: %total_by_symb = %{$item->{'total_s'}};
2096: if ($pbscope eq 'resource') {
2097: if (exists($total_by_symb{$symb})) {
2098: $total = $total_by_symb{$symb};
2099: } else {
2100: $total = $item->{'total'};
2101: }
2102: }
2103: } elsif ($pbscope eq 'resource') {
2104: $total = $item->{'total'};
2105: }
2106: if ((exists($item->{'possible_s'})) && (ref($item->{'possible_s'}) eq 'HASH')) {
2107: %possible_by_symb = %{$item->{'possible_s'}};
2108: if ($pbscope eq 'resource') {
2109: if (exists($possible_by_symb{$symb})) {
2110: $possible = $possible_by_symb{$symb};
2111: } else {
2112: $possible = $item->{'possible'};
2113: }
2114: }
2115: } elsif ($pbscope eq 'resource') {
2116: $possible = $item->{'possible'};
2117: }
2118: if (($pbscope eq 'map') || ($pbscope eq 'nonrec')) {
2119: if ((keys(%total_by_symb)) && (keys(%possible_by_symb))) {
2120: ($total,$possible) =
2121: &get_lti_score($uname,$udom,$usec,$map,$pbscope,\%total_by_symb,\%possible_by_symb);
2122: } else {
2123: ($total,$possible) = &get_lti_score($uname,$udom,$usec,$map,$pbscope);
2124: }
2125: } elsif ($pbscope eq 'course') {
2126: ($total,$possible) = &get_lti_score($uname,$udom,$usec);
2127: }
2128: $item->{'total'} = $total;
2129: $item->{'possible'} = $possible;
2130: if (($id ne '') && ($url ne '') && ($possible)) {
2131: my ($sent,$score,$code,$result) =
2132: &LONCAPA::ltiutils::send_grade($cdom,$cnum,$crsdef,$type,$ltinum,$keynum,$id,
2133: $url,$scoretype,$sigmethod,$msgformat,$total,$possible);
2134: $item->{'score'} = $score;
2135: my ($linkprotector,$linkuri,$no_passback,$appname);
2136: if ($item->{'linkprot'}) {
2137: ($linkprotector,$linkuri) = split(/:/,$item->{'linkprot'});
2138: }
2139: if ($sent) {
2140: if ($code == 200) {
2141: if ($item->{'linkprot'}) {
2142: my $skey = join("\0",($linkuri,$linkprotector,$scope));
2143: my $namespace = $cdom.'_'.$cnum.'_lp_passback';
2144: my $store = {
2145: 'score' => $score,
2146: 'ip' => $ip,
2147: 'host' => $Apache::lonnet::perlvar{'lonHostID'},
2148: 'protector' => $linkprotector,
2149: 'deeplink' => $linkuri,
2150: 'scope' => $scope,
2151: 'url' => $url,
2152: 'id' => $id,
2153: 'clientip' => $clientip,
2154: 'whodoneit' => $env{'user.name'}.':'.$env{'user.domain'},
2155: };
2156: my $value='';
2157: foreach my $key (keys(%{$store})) {
2158: $value.=&escape($key).'='.&Apache::lonnet::freeze_escape($store->{$key}).'&';
2159: }
2160: $value=~s/\&$//;
2161: &Apache::lonnet::courselog(&escape($linkuri).':'.$uname.':'.$udom.':EXPORT:'.$value);
2162: &Apache::lonnet::store_userdata({'score' => $score},$skey,$namespace,$udom,$uname,$ip);
2163: }
2164: } else {
2165: if ($item->{'linkprot'}) {
2166: $no_passback = "Passback response was $code ($result).";
2167: }
2168: }
2169: } else {
2170: if ($item->{'linkprot'}) {
2171: $no_passback = 'No passback of scores.';
2172: }
2173: }
2174: if ($no_passback) {
2175: if ($item->{'linkprot'}) {
2176: my ($ltinum,$ltitype) = ($linkprotector =~ /^(\d+)(c|d)$/);
2177: if ($ltitype eq 'c') {
2178: my %lti = &Apache::lonnet::get_course_lti($cnum,$cdom,'provider');
2179: if (ref($lti{$ltinum}) eq 'HASH') {
2180: $appname = $lti{$ltinum}{'name'};
2181: }
2182: } elsif ($ltitype eq 'd') {
2183: my %lti = &Apache::lonnet::get_domain_lti($cdom,'linkprot');
2184: if (ref($lti{$ltinum}) eq 'HASH') {
2185: $appname = $lti{$ltinum}{'name'};
2186: }
2187: }
2188: $no_passback .= " LTI launcher $linkprotector ($appname) for $linkuri (${cdom}_${cnum})";
2189: &Apache::lonnet::logthis($no_passback." for $uname:$udom");
2190: &Apache::lonnet::log($udom,$uname,$uhome,"$no_passback score=$score total=$total poss=$possible");
2191: if ($item->{'linkprot'}) {
2192: my $pendingkey = &Time::HiRes::time().':'.$uname.':'.$udom.':'.
2193: "$linkuri\0$linkprotector\0$scope";
2194: &Apache::lonnet::put('linkprot_passback_pending',{$pendingkey => $item},$cdom,$cnum);
2195: }
2196: }
2197: }
2198: }
2199: }
2200: }
2201: return;
2202: }
2203:
2204: sub get_lti_score {
2205: my ($uname,$udom,$usec,$mapurl,$pbscope,$totals,$possibles) = @_;
2206: my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom,$usec);
2207: if (ref($navmap)) {
2208: my $iterator;
2209: if ($mapurl ne '') {
2210: my $map = $navmap->getResourceByUrl($mapurl);
2211: if (ref($map)) {
2212: my $firstres = $map->map_start();
2213: my $finishres = $map->map_finish();
2214: my $recursive = 1;
2215: if ($pbscope eq 'nonrec') {
2216: $recursive = 0;
2217: }
2218: $iterator = $navmap->getIterator($firstres,$finishres,undef,$recursive);
2219: }
2220: } else {
2221: $iterator = $navmap->getIterator(undef,undef,undef,1);
2222: }
2223: if (ref($iterator)) {
2224: my $depth = 1;
2225: my $total = 0;
2226: my $possible = 0;
2227: my (%totals_by_symb,%possibles_by_symb);
2228: if (ref($totals) eq 'HASH') {
2229: %totals_by_symb = %{$totals};
2230: }
2231: if (ref($possibles) eq 'HASH') {
2232: %possibles_by_symb = %{$possibles};
2233: }
2234: $iterator->next(); # ignore first BEGIN_MAP
2235: my $curRes = $iterator->next();
2236: while ( $depth > 0 ) {
2237: if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
2238: if ($curRes == $iterator->END_MAP()) { $depth--; }
2239: if (ref($curRes) && $curRes->is_gradable() && !$curRes->randomout) {
2240: my $currsymb = $curRes->symb();
2241: if (($currsymb) && (exists($totals_by_symb{$currsymb})) &&
2242: (exists($possibles_by_symb{$currsymb}))) {
2243: $total += $totals_by_symb{$currsymb};
2244: $possible += $possibles_by_symb{$currsymb};
2245: } else {
2246: my $parts = $curRes->parts();
2247: foreach my $part (@{$parts}) {
2248: next if ($curRes->solved($part) eq 'excused');
2249: $total += $curRes->weight($part) * $curRes->awarded($part);
2250: $possible += $curRes->weight($part);
2251: }
2252: }
2253: }
2254: $curRes = $iterator->next();
2255: }
2256: if ($total > $possible) {
2257: $total = $possible;
2258: }
2259: return ($total,$possible);
2260: }
2261: }
2262: return;
2263: }
2264:
2265: 1;
2266: __END__
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