1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.495 2006/12/18 23:01:35 albertel 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: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet;
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::lonmenu();
62: use Apache::lonlocal;
63: use HTML::Entities;
64: use Apache::lonhtmlcommon();
65: use Apache::loncoursedata();
66: use Apache::lontexconvert();
67: use Apache::lonclonecourse();
68: use LONCAPA qw(:DEFAULT :match);
69:
70: my $readit;
71:
72: ##
73: ## Global Variables
74: ##
75:
76: # ----------------------------------------------- Filetypes/Languages/Copyright
77: my %language;
78: my %supported_language;
79: my %cprtag;
80: my %scprtag;
81: my %fe; my %fd; my %fm;
82: my %category_extensions;
83:
84: # ---------------------------------------------- Designs
85:
86: my %designhash;
87:
88: # ---------------------------------------------- Thesaurus variables
89: #
90: # %Keywords:
91: # A hash used by &keyword to determine if a word is considered a keyword.
92: # $thesaurus_db_file
93: # Scalar containing the full path to the thesaurus database.
94:
95: my %Keywords;
96: my $thesaurus_db_file;
97:
98: #
99: # Initialize values from language.tab, copyright.tab, filetypes.tab,
100: # thesaurus.tab, and filecategories.tab.
101: #
102: BEGIN {
103: # Variable initialization
104: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
105: #
106: unless ($readit) {
107: # ------------------------------------------------------------------- languages
108: {
109: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
110: '/language.tab';
111: if ( open(my $fh,"<$langtabfile") ) {
112: while (my $line = <$fh>) {
113: next if ($line=~/^\#/);
114: chomp($line);
115: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$line));
116: $language{$key}=$val.' - '.$enc;
117: if ($sup) {
118: $supported_language{$key}=$sup;
119: }
120: }
121: close($fh);
122: }
123: }
124: # ------------------------------------------------------------------ copyrights
125: {
126: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
127: '/copyright.tab';
128: if ( open (my $fh,"<$copyrightfile") ) {
129: while (my $line = <$fh>) {
130: next if ($line=~/^\#/);
131: chomp($line);
132: my ($key,$val)=(split(/\s+/,$line,2));
133: $cprtag{$key}=$val;
134: }
135: close($fh);
136: }
137: }
138: # ----------------------------------------------------------- source copyrights
139: {
140: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
141: '/source_copyright.tab';
142: if ( open (my $fh,"<$sourcecopyrightfile") ) {
143: while (my $line = <$fh>) {
144: next if ($line =~ /^\#/);
145: chomp($line);
146: my ($key,$val)=(split(/\s+/,$line,2));
147: $scprtag{$key}=$val;
148: }
149: close($fh);
150: }
151: }
152:
153: # -------------------------------------------------------------- domain designs
154:
155: my $filename;
156: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
157: opendir(DIR,$designdir);
158: while ($filename=readdir(DIR)) {
159: if ($filename!~/\.tab$/) { next; }
160: my ($domain)=($filename=~/^($match_domain)\./);
161: {
162: my $designfile = $designdir.'/'.$filename;
163: if ( open (my $fh,"<$designfile") ) {
164: while (my $line = <$fh>) {
165: next if ($line =~ /^\#/);
166: chomp($line);
167: my ($key,$val)=(split(/\=/,$line));
168: if ($val) { $designhash{$domain.'.'.$key}=$val; }
169: }
170: close($fh);
171: }
172: }
173:
174: }
175: closedir(DIR);
176:
177:
178: # ------------------------------------------------------------- file categories
179: {
180: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
181: '/filecategories.tab';
182: if ( open (my $fh,"<$categoryfile") ) {
183: while (my $line = <$fh>) {
184: next if ($line =~ /^\#/);
185: chomp($line);
186: my ($extension,$category)=(split(/\s+/,$line,2));
187: push @{$category_extensions{lc($category)}},$extension;
188: }
189: close($fh);
190: }
191:
192: }
193: # ------------------------------------------------------------------ file types
194: {
195: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
196: '/filetypes.tab';
197: if ( open (my $fh,"<$typesfile") ) {
198: while (my $line = <$fh>) {
199: next if ($line =~ /^\#/);
200: chomp($line);
201: my ($ending,$emb,$mime,$descr)=split(/\s+/,$line,4);
202: if ($descr ne '') {
203: $fe{$ending}=lc($emb);
204: $fd{$ending}=$descr;
205: if ($mime ne 'unk') { $fm{$ending}=$mime; }
206: }
207: }
208: close($fh);
209: }
210: }
211: &Apache::lonnet::logthis(
212: "<font color=yellow>INFO: Read file types</font>");
213: $readit=1;
214: } # end of unless($readit)
215:
216: }
217:
218: ###############################################################
219: ## HTML and Javascript Helper Functions ##
220: ###############################################################
221:
222: =pod
223:
224: =head1 HTML and Javascript Functions
225:
226: =over 4
227:
228: =item * browser_and_searcher_javascript ()
229:
230: X<browsing, javascript>X<searching, javascript>Returns a string
231: containing javascript with two functions, C<openbrowser> and
232: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
233: tags.
234:
235: =item * openbrowser(formname,elementname,only,omit) [javascript]
236:
237: inputs: formname, elementname, only, omit
238:
239: formname and elementname indicate the name of the html form and name of
240: the element that the results of the browsing selection are to be placed in.
241:
242: Specifying 'only' will restrict the browser to displaying only files
243: with the given extension. Can be a comma separated list.
244:
245: Specifying 'omit' will restrict the browser to NOT displaying files
246: with the given extension. Can be a comma separated list.
247:
248: =item * opensearcher(formname, elementname) [javascript]
249:
250: Inputs: formname, elementname
251:
252: formname and elementname specify the name of the html form and the name
253: of the element the selection from the search results will be placed in.
254:
255: =cut
256:
257: sub browser_and_searcher_javascript {
258: my ($mode)=@_;
259: if (!defined($mode)) { $mode='edit'; }
260: my $resurl=&escape_single(&lastresurl());
261: return <<END;
262: // <!-- BEGIN LON-CAPA Internal
263: var editbrowser = null;
264: function openbrowser(formname,elementname,only,omit,titleelement) {
265: var url = '$resurl/?';
266: if (editbrowser == null) {
267: url += 'launch=1&';
268: }
269: url += 'catalogmode=interactive&';
270: url += 'mode=$mode&';
271: url += 'form=' + formname + '&';
272: if (only != null) {
273: url += 'only=' + only + '&';
274: } else {
275: url += 'only=&';
276: }
277: if (omit != null) {
278: url += 'omit=' + omit + '&';
279: } else {
280: url += 'omit=&';
281: }
282: if (titleelement != null) {
283: url += 'titleelement=' + titleelement + '&';
284: } else {
285: url += 'titleelement=&';
286: }
287: url += 'element=' + elementname + '';
288: var title = 'Browser';
289: var options = 'scrollbars=1,resizable=1,menubar=0,toolbar=1,location=1';
290: options += ',width=700,height=600';
291: editbrowser = open(url,title,options,'1');
292: editbrowser.focus();
293: }
294: var editsearcher;
295: function opensearcher(formname,elementname,titleelement) {
296: var url = '/adm/searchcat?';
297: if (editsearcher == null) {
298: url += 'launch=1&';
299: }
300: url += 'catalogmode=interactive&';
301: url += 'mode=$mode&';
302: url += 'form=' + formname + '&';
303: if (titleelement != null) {
304: url += 'titleelement=' + titleelement + '&';
305: } else {
306: url += 'titleelement=&';
307: }
308: url += 'element=' + elementname + '';
309: var title = 'Search';
310: var options = 'scrollbars=1,resizable=1,menubar=0,toolbar=1,location=1';
311: options += ',width=700,height=600';
312: editsearcher = open(url,title,options,'1');
313: editsearcher.focus();
314: }
315: // END LON-CAPA Internal -->
316: END
317: }
318:
319: sub lastresurl {
320: if ($env{'environment.lastresurl'}) {
321: return $env{'environment.lastresurl'}
322: } else {
323: return '/res';
324: }
325: }
326:
327: sub storeresurl {
328: my $resurl=&Apache::lonnet::clutter(shift);
329: unless ($resurl=~/^\/res/) { return 0; }
330: $resurl=~s/\/$//;
331: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
332: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
333: return 1;
334: }
335:
336: sub studentbrowser_javascript {
337: unless (
338: (($env{'request.course.id'}) &&
339: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
340: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
341: '/'.$env{'request.course.sec'})
342: ))
343: || ($env{'request.role'}=~/^(au|dc|su)/)
344: ) { return ''; }
345: return (<<'ENDSTDBRW');
346: <script type="text/javascript" language="Javascript" >
347: var stdeditbrowser;
348: function openstdbrowser(formname,uname,udom,roleflag) {
349: var url = '/adm/pickstudent?';
350: var filter;
351: eval('filter=document.'+formname+'.'+uname+'.value;');
352: if (filter != null) {
353: if (filter != '') {
354: url += 'filter='+filter+'&';
355: }
356: }
357: url += 'form=' + formname + '&unameelement='+uname+
358: '&udomelement='+udom;
359: if (roleflag) { url+="&roles=1"; }
360: var title = 'Student_Browser';
361: var options = 'scrollbars=1,resizable=1,menubar=0';
362: options += ',width=700,height=600';
363: stdeditbrowser = open(url,title,options,'1');
364: stdeditbrowser.focus();
365: }
366: </script>
367: ENDSTDBRW
368: }
369:
370: sub selectstudent_link {
371: my ($form,$unameele,$udomele)=@_;
372: if ($env{'request.course.id'}) {
373: if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
374: && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
375: '/'.$env{'request.course.sec'})) {
376: return '';
377: }
378: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
379: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
380: }
381: if ($env{'request.role'}=~/^(au|dc|su)/) {
382: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
383: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
384: }
385: return '';
386: }
387:
388: sub coursebrowser_javascript {
389: my ($domainfilter,$sec_element,$formname)=@_;
390: my $crs_or_grp_alert = &mt('Please select the type of LON-CAPA entity - Course or Group - for which you wish to add/modify a user role');
391: my $output = '
392: <script type="text/javascript" language="Javascript" >
393: var stdeditbrowser;'."\n";
394: $output .= <<"ENDSTDBRW";
395: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag,crstype) {
396: var url = '/adm/pickcourse?';
397: var domainfilter = '';
398: var formid = getFormIdByName(formname);
399: if (formid > -1) {
400: var domid = getIndexByName(formid,udom);
401: if (domid > -1) {
402: if (document.forms[formid].elements[domid].type == 'select-one') {
403: domainfilter=document.forms[formid].elements[domid].options[document.forms[formid].elements[domid].selectedIndex].value;
404: }
405: if (document.forms[formid].elements[domid].type == 'hidden') {
406: domainfilter=document.forms[formid].elements[domid].value;
407: }
408: }
409: }
410: if (domainfilter != null) {
411: if (domainfilter != '') {
412: url += 'domainfilter='+domainfilter+'&';
413: }
414: }
415: url += 'form=' + formname + '&cnumelement='+uname+
416: '&cdomelement='+udom+
417: '&cnameelement='+desc;
418: if (extra_element !=null && extra_element != '') {
419: if (formname == 'rolechoice') {
420: url += '&roleelement='+extra_element;
421: if (domainfilter == null || domainfilter == '') {
422: url += '&domainfilter='+extra_element;
423: }
424: }
425: else {
426: if (formname == 'portform') {
427: url += '&setroles='+extra_element;
428: }
429: }
430: }
431: if (multflag !=null && multflag != '') {
432: url += '&multiple='+multflag;
433: }
434: if (crstype == 'Course/Group') {
435: if (formname == 'cu') {
436: crstype = document.cu.crstype.options[document.cu.crstype.selectedIndex].value;
437: if (crstype == "") {
438: alert("$crs_or_grp_alert");
439: return;
440: }
441: }
442: }
443: if (crstype !=null && crstype != '') {
444: url += '&type='+crstype;
445: }
446: var title = 'Course_Browser';
447: var options = 'scrollbars=1,resizable=1,menubar=0';
448: options += ',width=700,height=600';
449: stdeditbrowser = open(url,title,options,'1');
450: stdeditbrowser.focus();
451: }
452:
453: function getFormIdByName(formname) {
454: for (var i=0;i<document.forms.length;i++) {
455: if (document.forms[i].name == formname) {
456: return i;
457: }
458: }
459: return -1;
460: }
461:
462: function getIndexByName(formid,item) {
463: for (var i=0;i<document.forms[formid].elements.length;i++) {
464: if (document.forms[formid].elements[i].name == item) {
465: return i;
466: }
467: }
468: return -1;
469: }
470: ENDSTDBRW
471: if ($sec_element ne '') {
472: $output .= &setsec_javascript($sec_element,$formname);
473: }
474: $output .= '
475: </script>';
476: return $output;
477: }
478:
479: sub setsec_javascript {
480: my ($sec_element,$formname) = @_;
481: my $setsections = qq|
482: function setSect(sectionlist) {
483: var sectionsArray = sectionlist.split(",");
484: var numSections = sectionsArray.length;
485: document.$formname.$sec_element.length = 0;
486: if (numSections == 0) {
487: document.$formname.$sec_element.multiple=false;
488: document.$formname.$sec_element.size=1;
489: document.$formname.$sec_element.options[0] = new Option('No existing sections','',false,false)
490: } else {
491: if (numSections == 1) {
492: document.$formname.$sec_element.multiple=false;
493: document.$formname.$sec_element.size=1;
494: document.$formname.$sec_element.options[0] = new Option('Select','',true,true);
495: document.$formname.$sec_element.options[1] = new Option('No section','',false,false)
496: document.$formname.$sec_element.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
497: } else {
498: for (var i=0; i<numSections; i++) {
499: document.$formname.$sec_element.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
500: }
501: document.$formname.$sec_element.multiple=true
502: if (numSections < 3) {
503: document.$formname.$sec_element.size=numSections;
504: } else {
505: document.$formname.$sec_element.size=3;
506: }
507: document.$formname.$sec_element.options[0].selected = false
508: }
509: }
510: }
511: |;
512: return $setsections;
513: }
514:
515:
516: sub selectcourse_link {
517: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag,$selecttype)=@_;
518: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
519: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'","'.$selecttype.'");'."'>".&mt('Select Course')."</a>";
520: }
521:
522: sub check_uncheck_jscript {
523: my $jscript = <<"ENDSCRT";
524: function checkAll(field) {
525: if (field.length > 0) {
526: for (i = 0; i < field.length; i++) {
527: field[i].checked = true ;
528: }
529: } else {
530: field.checked = true
531: }
532: }
533:
534: function uncheckAll(field) {
535: if (field.length > 0) {
536: for (i = 0; i < field.length; i++) {
537: field[i].checked = false ;
538: } } else {
539: field.checked = false ;
540: }
541: }
542: ENDSCRT
543: return $jscript;
544: }
545:
546:
547: =pod
548:
549: =item * linked_select_forms(...)
550:
551: linked_select_forms returns a string containing a <script></script> block
552: and html for two <select> menus. The select menus will be linked in that
553: changing the value of the first menu will result in new values being placed
554: in the second menu. The values in the select menu will appear in alphabetical
555: order.
556:
557: linked_select_forms takes the following ordered inputs:
558:
559: =over 4
560:
561: =item * $formname, the name of the <form> tag
562:
563: =item * $middletext, the text which appears between the <select> tags
564:
565: =item * $firstdefault, the default value for the first menu
566:
567: =item * $firstselectname, the name of the first <select> tag
568:
569: =item * $secondselectname, the name of the second <select> tag
570:
571: =item * $hashref, a reference to a hash containing the data for the menus.
572:
573: =back
574:
575: Below is an example of such a hash. Only the 'text', 'default', and
576: 'select2' keys must appear as stated. keys(%menu) are the possible
577: values for the first select menu. The text that coincides with the
578: first menu value is given in $menu{$choice1}->{'text'}. The values
579: and text for the second menu are given in the hash pointed to by
580: $menu{$choice1}->{'select2'}.
581:
582: my %menu = ( A1 => { text =>"Choice A1" ,
583: default => "B3",
584: select2 => {
585: B1 => "Choice B1",
586: B2 => "Choice B2",
587: B3 => "Choice B3",
588: B4 => "Choice B4"
589: }
590: },
591: A2 => { text =>"Choice A2" ,
592: default => "C2",
593: select2 => {
594: C1 => "Choice C1",
595: C2 => "Choice C2",
596: C3 => "Choice C3"
597: }
598: },
599: A3 => { text =>"Choice A3" ,
600: default => "D6",
601: select2 => {
602: D1 => "Choice D1",
603: D2 => "Choice D2",
604: D3 => "Choice D3",
605: D4 => "Choice D4",
606: D5 => "Choice D5",
607: D6 => "Choice D6",
608: D7 => "Choice D7"
609: }
610: }
611: );
612:
613: =cut
614:
615: sub linked_select_forms {
616: my ($formname,
617: $middletext,
618: $firstdefault,
619: $firstselectname,
620: $secondselectname,
621: $hashref
622: ) = @_;
623: my $second = "document.$formname.$secondselectname";
624: my $first = "document.$formname.$firstselectname";
625: # output the javascript to do the changing
626: my $result = '';
627: $result.="<script type=\"text/javascript\">\n";
628: $result.="var select2data = new Object();\n";
629: $" = '","';
630: my $debug = '';
631: foreach my $s1 (sort(keys(%$hashref))) {
632: $result.="select2data.d_$s1 = new Object();\n";
633: $result.="select2data.d_$s1.def = new String('".
634: $hashref->{$s1}->{'default'}."');\n";
635: $result.="select2data.d_$s1.values = new Array(";
636: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
637: $result.="\"@s2values\");\n";
638: $result.="select2data.d_$s1.texts = new Array(";
639: my @s2texts;
640: foreach my $value (@s2values) {
641: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
642: }
643: $result.="\"@s2texts\");\n";
644: }
645: $"=' ';
646: $result.= <<"END";
647:
648: function select1_changed() {
649: // Determine new choice
650: var newvalue = "d_" + $first.value;
651: // update select2
652: var values = select2data[newvalue].values;
653: var texts = select2data[newvalue].texts;
654: var select2def = select2data[newvalue].def;
655: var i;
656: // out with the old
657: for (i = 0; i < $second.options.length; i++) {
658: $second.options[i] = null;
659: }
660: // in with the nuclear
661: for (i=0;i<values.length; i++) {
662: $second.options[i] = new Option(values[i]);
663: $second.options[i].value = values[i];
664: $second.options[i].text = texts[i];
665: if (values[i] == select2def) {
666: $second.options[i].selected = true;
667: }
668: }
669: }
670: </script>
671: END
672: # output the initial values for the selection lists
673: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
674: foreach my $value (sort(keys(%$hashref))) {
675: $result.=" <option value=\"$value\" ";
676: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
677: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
678: }
679: $result .= "</select>\n";
680: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
681: $result .= $middletext;
682: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
683: my $seconddefault = $hashref->{$firstdefault}->{'default'};
684: foreach my $value (sort(keys(%select2))) {
685: $result.=" <option value=\"$value\" ";
686: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
687: $result.=">".&mt($select2{$value})."</option>\n";
688: }
689: $result .= "</select>\n";
690: # return $debug;
691: return $result;
692: } # end of sub linked_select_forms {
693:
694: =pod
695:
696: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
697:
698: Returns a string corresponding to an HTML link to the given help
699: $topic, where $topic corresponds to the name of a .tex file in
700: /home/httpd/html/adm/help/tex, with underscores replaced by
701: spaces.
702:
703: $text will optionally be linked to the same topic, allowing you to
704: link text in addition to the graphic. If you do not want to link
705: text, but wish to specify one of the later parameters, pass an
706: empty string.
707:
708: $stayOnPage is a value that will be interpreted as a boolean. If true,
709: the link will not open a new window. If false, the link will open
710: a new window using Javascript. (Default is false.)
711:
712: $width and $height are optional numerical parameters that will
713: override the width and height of the popped up window, which may
714: be useful for certain help topics with big pictures included.
715:
716: =cut
717:
718: sub help_open_topic {
719: my ($topic, $text, $stayOnPage, $width, $height) = @_;
720: $text = "" if (not defined $text);
721: $stayOnPage = 0 if (not defined $stayOnPage);
722: if ($env{'browser.interface'} eq 'textual' ||
723: $env{'environment.remote'} eq 'off' ) {
724: $stayOnPage=1;
725: }
726: $width = 350 if (not defined $width);
727: $height = 400 if (not defined $height);
728: my $filename = $topic;
729: $filename =~ s/ /_/g;
730:
731: my $template = "";
732: my $link;
733:
734: $topic=~s/\W/\_/g;
735:
736: if (!$stayOnPage)
737: {
738: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
739: }
740: else
741: {
742: $link = "/adm/help/${filename}.hlp";
743: }
744:
745: # Add the text
746: if ($text ne "")
747: {
748: $template .=
749: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
750: "<td bgcolor='#5555FF'><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
751: }
752:
753: # Add the graphic
754: my $title = &mt('Online Help');
755: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
756: $template .= <<"ENDTEMPLATE";
757: <a target="_top" href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
758: ENDTEMPLATE
759: if ($text ne '') { $template.='</td></tr></table>' };
760: return $template;
761:
762: }
763:
764: # This is a quicky function for Latex cheatsheet editing, since it
765: # appears in at least four places
766: sub helpLatexCheatsheet {
767: my $other = shift;
768: my $addOther = '';
769: if ($other) {
770: $addOther = Apache::loncommon::help_open_topic($other, shift,
771: undef, undef, 600) .
772: '</td><td>';
773: }
774: return '<table><tr><td>'.
775: $addOther .
776: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
777: undef,undef,600)
778: .'</td><td>'.
779: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
780: undef,undef,600)
781: .'</td></tr></table>';
782: }
783:
784: sub general_help {
785: my $helptopic='Student_Intro';
786: if ($env{'request.role'}=~/^(ca|au)/) {
787: $helptopic='Authoring_Intro';
788: } elsif ($env{'request.role'}=~/^cc/) {
789: $helptopic='Course_Coordination_Intro';
790: }
791: return $helptopic;
792: }
793:
794: sub update_help_link {
795: my ($topic,$component_help,$faq,$bug,$stayOnPage) = @_;
796: my $origurl = $ENV{'REQUEST_URI'};
797: $origurl=~s|^/~|/priv/|;
798: my $timestamp = time;
799: foreach my $datum (\$topic,\$component_help,\$faq,\$bug,\$origurl) {
800: $$datum = &escape($$datum);
801: }
802:
803: my $banner_link = "/adm/helpmenu?page=banner&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp&stayonpage=$stayOnPage";
804: my $output .= <<"ENDOUTPUT";
805: <script type="text/javascript">
806: banner_link = '$banner_link';
807: </script>
808: ENDOUTPUT
809: return $output;
810: }
811:
812: # now just updates the help link and generates a blue icon
813: sub help_open_menu {
814: my ($topic,$component_help,$faq,$bug,$stayOnPage,$width,$height,$text)
815: = @_;
816:
817: $stayOnPage = 0 if (not defined $stayOnPage);
818: if ($env{'browser.interface'} eq 'textual' ||
819: $env{'environment.remote'} eq 'off' ) {
820: $stayOnPage=1;
821: }
822: my $output;
823: if ($component_help) {
824: if (!$text) {
825: $output=&help_open_topic($component_help,undef,$stayOnPage,
826: $width,$height);
827: } else {
828: my $help_text;
829: $help_text=&unescape($topic);
830: $output='<table><tr><td>'.
831: &help_open_topic($component_help,$help_text,$stayOnPage,
832: $width,$height).'</td></tr></table>';
833: }
834: }
835: my $banner_link = &update_help_link($topic,$component_help,$faq,$bug,$stayOnPage);
836: return $output.$banner_link;
837: }
838:
839: sub top_nav_help {
840: my ($text) = @_;
841:
842: $text = &mt($text);
843:
844: my $stayOnPage =
845: ($env{'browser.interface'} eq 'textual' ||
846: $env{'environment.remote'} eq 'off' );
847: my $link= ($stayOnPage) ? "javascript:helpMenu('display')"
848: : "javascript:helpMenu('open')";
849: my $banner_link = &update_help_link(undef,undef,undef,undef,$stayOnPage);
850:
851: my $title = &mt('Get help');
852:
853: return <<"END";
854: $banner_link
855: <a href="$link" title="$title">$text</a>
856: END
857: }
858:
859: sub help_menu_js {
860: my ($text) = @_;
861:
862: my $stayOnPage =
863: ($env{'browser.interface'} eq 'textual' ||
864: $env{'environment.remote'} eq 'off' );
865:
866: my $width = 620;
867: my $height = 600;
868: my $helptopic=&general_help();
869: my $details_link = '/adm/help/'.$helptopic.'.hlp';
870: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
871: my $start_page =
872: &Apache::loncommon::start_page('Help Menu', undef,
873: {'frameset' => 1,
874: 'js_ready' => 1,
875: 'add_entries' => {
876: 'border' => '0',
877: 'rows' => "105,*",},});
878: my $end_page =
879: &Apache::loncommon::end_page({'frameset' => 1,
880: 'js_ready' => 1,});
881:
882: my $template .= <<"ENDTEMPLATE";
883: <script type="text/javascript">
884: // <!-- BEGIN LON-CAPA Internal
885: // <![CDATA[
886: var banner_link = '';
887: function helpMenu(target) {
888: var caller = this;
889: if (target == 'open') {
890: var newWindow = null;
891: try {
892: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
893: }
894: catch(error) {
895: writeHelp(caller);
896: return;
897: }
898: if (newWindow) {
899: caller = newWindow;
900: }
901: }
902: writeHelp(caller);
903: return;
904: }
905: function writeHelp(caller) {
906: caller.document.writeln('$start_page<frame name="bannerframe" src="'+banner_link+'" /><frame name="bodyframe" src="$details_link" /> $end_page')
907: caller.document.close()
908: caller.focus()
909: }
910: // ]]>
911: // END LON-CAPA Internal -->
912: </script>
913: ENDTEMPLATE
914: return $template;
915: }
916:
917: sub help_open_bug {
918: my ($topic, $text, $stayOnPage, $width, $height) = @_;
919: unless ($env{'user.adv'}) { return ''; }
920: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
921: $text = "" if (not defined $text);
922: $stayOnPage = 0 if (not defined $stayOnPage);
923: if ($env{'browser.interface'} eq 'textual' ||
924: $env{'environment.remote'} eq 'off' ) {
925: $stayOnPage=1;
926: }
927: $width = 600 if (not defined $width);
928: $height = 600 if (not defined $height);
929:
930: $topic=~s/\W+/\+/g;
931: my $link='';
932: my $template='';
933: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
934: &escape($ENV{'REQUEST_URI'}).'&component='.$topic;
935: if (!$stayOnPage)
936: {
937: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
938: }
939: else
940: {
941: $link = $url;
942: }
943: # Add the text
944: if ($text ne "")
945: {
946: $template .=
947: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
948: "<td bgcolor='#FF5555'><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
949: }
950:
951: # Add the graphic
952: my $title = &mt('Report a Bug');
953: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
954: $template .= <<"ENDTEMPLATE";
955: <a target="_top" href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
956: ENDTEMPLATE
957: if ($text ne '') { $template.='</td></tr></table>' };
958: return $template;
959:
960: }
961:
962: sub help_open_faq {
963: my ($topic, $text, $stayOnPage, $width, $height) = @_;
964: unless ($env{'user.adv'}) { return ''; }
965: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
966: $text = "" if (not defined $text);
967: $stayOnPage = 0 if (not defined $stayOnPage);
968: if ($env{'browser.interface'} eq 'textual' ||
969: $env{'environment.remote'} eq 'off' ) {
970: $stayOnPage=1;
971: }
972: $width = 350 if (not defined $width);
973: $height = 400 if (not defined $height);
974:
975: $topic=~s/\W+/\+/g;
976: my $link='';
977: my $template='';
978: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
979: if (!$stayOnPage)
980: {
981: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
982: }
983: else
984: {
985: $link = $url;
986: }
987:
988: # Add the text
989: if ($text ne "")
990: {
991: $template .=
992: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
993: "<td bgcolor='#448844'><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
994: }
995:
996: # Add the graphic
997: my $title = &mt('View the FAQ');
998: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
999: $template .= <<"ENDTEMPLATE";
1000: <a target="_top" href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
1001: ENDTEMPLATE
1002: if ($text ne '') { $template.='</td></tr></table>' };
1003: return $template;
1004:
1005: }
1006:
1007: ###############################################################
1008: ###############################################################
1009:
1010: =pod
1011:
1012: =item * change_content_javascript():
1013:
1014: This and the next function allow you to create small sections of an
1015: otherwise static HTML page that you can update on the fly with
1016: Javascript, even in Netscape 4.
1017:
1018: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
1019: must be written to the HTML page once. It will prove the Javascript
1020: function "change(name, content)". Calling the change function with the
1021: name of the section
1022: you want to update, matching the name passed to C<changable_area>, and
1023: the new content you want to put in there, will put the content into
1024: that area.
1025:
1026: B<Note>: Netscape 4 only reserves enough space for the changable area
1027: to contain room for the original contents. You need to "make space"
1028: for whatever changes you wish to make, and be B<sure> to check your
1029: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
1030: it's adequate for updating a one-line status display, but little more.
1031: This script will set the space to 100% width, so you only need to
1032: worry about height in Netscape 4.
1033:
1034: Modern browsers are much less limiting, and if you can commit to the
1035: user not using Netscape 4, this feature may be used freely with
1036: pretty much any HTML.
1037:
1038: =cut
1039:
1040: sub change_content_javascript {
1041: # If we're on Netscape 4, we need to use Layer-based code
1042: if ($env{'browser.type'} eq 'netscape' &&
1043: $env{'browser.version'} =~ /^4\./) {
1044: return (<<NETSCAPE4);
1045: function change(name, content) {
1046: doc = document.layers[name+"___escape"].layers[0].document;
1047: doc.open();
1048: doc.write(content);
1049: doc.close();
1050: }
1051: NETSCAPE4
1052: } else {
1053: # Otherwise, we need to use semi-standards-compliant code
1054: # (technically, "innerHTML" isn't standard but the equivalent
1055: # is really scary, and every useful browser supports it
1056: return (<<DOMBASED);
1057: function change(name, content) {
1058: element = document.getElementById(name);
1059: element.innerHTML = content;
1060: }
1061: DOMBASED
1062: }
1063: }
1064:
1065: =pod
1066:
1067: =item * changable_area($name, $origContent):
1068:
1069: This provides a "changable area" that can be modified on the fly via
1070: the Javascript code provided in C<change_content_javascript>. $name is
1071: the name you will use to reference the area later; do not repeat the
1072: same name on a given HTML page more then once. $origContent is what
1073: the area will originally contain, which can be left blank.
1074:
1075: =cut
1076:
1077: sub changable_area {
1078: my ($name, $origContent) = @_;
1079:
1080: if ($env{'browser.type'} eq 'netscape' &&
1081: $env{'browser.version'} =~ /^4\./) {
1082: # If this is netscape 4, we need to use the Layer tag
1083: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
1084: } else {
1085: return "<span id='$name'>$origContent</span>";
1086: }
1087: }
1088:
1089: =pod
1090:
1091: =back
1092:
1093: =head1 Excel and CSV file utility routines
1094:
1095: =over 4
1096:
1097: =cut
1098:
1099: ###############################################################
1100: ###############################################################
1101:
1102: =pod
1103:
1104: =item * csv_translate($text)
1105:
1106: Translate $text to allow it to be output as a 'comma separated values'
1107: format.
1108:
1109: =cut
1110:
1111: ###############################################################
1112: ###############################################################
1113: sub csv_translate {
1114: my $text = shift;
1115: $text =~ s/\"/\"\"/g;
1116: $text =~ s/\n/ /g;
1117: return $text;
1118: }
1119:
1120: ###############################################################
1121: ###############################################################
1122:
1123: =pod
1124:
1125: =item * define_excel_formats
1126:
1127: Define some commonly used Excel cell formats.
1128:
1129: Currently supported formats:
1130:
1131: =over 4
1132:
1133: =item header
1134:
1135: =item bold
1136:
1137: =item h1
1138:
1139: =item h2
1140:
1141: =item h3
1142:
1143: =item h4
1144:
1145: =item i
1146:
1147: =item date
1148:
1149: =back
1150:
1151: Inputs: $workbook
1152:
1153: Returns: $format, a hash reference.
1154:
1155: =cut
1156:
1157: ###############################################################
1158: ###############################################################
1159: sub define_excel_formats {
1160: my ($workbook) = @_;
1161: my $format;
1162: $format->{'header'} = $workbook->add_format(bold => 1,
1163: bottom => 1,
1164: align => 'center');
1165: $format->{'bold'} = $workbook->add_format(bold=>1);
1166: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1167: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1168: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1169: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1170: $format->{'i'} = $workbook->add_format(italic=>1);
1171: $format->{'date'} = $workbook->add_format(num_format=>
1172: 'mm/dd/yyyy hh:mm:ss');
1173: return $format;
1174: }
1175:
1176: ###############################################################
1177: ###############################################################
1178:
1179: =pod
1180:
1181: =item * create_workbook
1182:
1183: Create an Excel worksheet. If it fails, output message on the
1184: request object and return undefs.
1185:
1186: Inputs: Apache request object
1187:
1188: Returns (undef) on failure,
1189: Excel worksheet object, scalar with filename, and formats
1190: from &Apache::loncommon::define_excel_formats on success
1191:
1192: =cut
1193:
1194: ###############################################################
1195: ###############################################################
1196: sub create_workbook {
1197: my ($r) = @_;
1198: #
1199: # Create the excel spreadsheet
1200: my $filename = '/prtspool/'.
1201: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1202: time.'_'.rand(1000000000).'.xls';
1203: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1204: if (! defined($workbook)) {
1205: $r->log_error("Error creating excel spreadsheet $filename: $!");
1206: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1207: "This error has been logged. ".
1208: "Please alert your LON-CAPA administrator").
1209: '</p>');
1210: return (undef);
1211: }
1212: #
1213: $workbook->set_tempdir('/home/httpd/perl/tmp');
1214: #
1215: my $format = &Apache::loncommon::define_excel_formats($workbook);
1216: return ($workbook,$filename,$format);
1217: }
1218:
1219: ###############################################################
1220: ###############################################################
1221:
1222: =pod
1223:
1224: =item * create_text_file
1225:
1226: Create a file to write to and eventually make available to the usre.
1227: If file creation fails, outputs an error message on the request object and
1228: return undefs.
1229:
1230: Inputs: Apache request object, and file suffix
1231:
1232: Returns (undef) on failure,
1233: Filehandle and filename on success.
1234:
1235: =cut
1236:
1237: ###############################################################
1238: ###############################################################
1239: sub create_text_file {
1240: my ($r,$suffix) = @_;
1241: if (! defined($suffix)) { $suffix = 'txt'; };
1242: my $fh;
1243: my $filename = '/prtspool/'.
1244: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1245: time.'_'.rand(1000000000).'.'.$suffix;
1246: $fh = Apache::File->new('>/home/httpd'.$filename);
1247: if (! defined($fh)) {
1248: $r->log_error("Couldn't open $filename for output $!");
1249: $r->print("Problems occured in creating the output file. ".
1250: "This error has been logged. ".
1251: "Please alert your LON-CAPA administrator.");
1252: }
1253: return ($fh,$filename)
1254: }
1255:
1256:
1257: =pod
1258:
1259: =back
1260:
1261: =cut
1262:
1263: ###############################################################
1264: ## Home server <option> list generating code ##
1265: ###############################################################
1266:
1267: =pod
1268:
1269: =head1 Home Server option list generating code
1270:
1271: =over 4
1272:
1273: =item * get_domains()
1274:
1275: Returns an array containing each of the domains listed in the hosts.tab
1276: file.
1277:
1278: =cut
1279:
1280: #-------------------------------------------
1281: sub get_domains {
1282: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1283: my @domains;
1284: my %seen;
1285: foreach my $dom (sort(values(%Apache::lonnet::hostdom))) {
1286: push(@domains,$dom) unless $seen{$dom}++;
1287: }
1288: return @domains;
1289: }
1290:
1291: # ------------------------------------------
1292:
1293: sub domain_select {
1294: my ($name,$value,$multiple)=@_;
1295: my %domains=map {
1296: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1297: } &get_domains;
1298: if ($multiple) {
1299: $domains{''}=&mt('Any domain');
1300: return &multiple_select_form($name,$value,4,\%domains);
1301: } else {
1302: return &select_form($name,$value,%domains);
1303: }
1304: }
1305:
1306: #-------------------------------------------
1307:
1308: =pod
1309:
1310: =item * multiple_select_form($name,$value,$size,$hash,$order)
1311:
1312: Returns a string containing a <select> element int multiple mode
1313:
1314:
1315: Args:
1316: $name - name of the <select> element
1317: $value - sclara or array ref of values that should already be selected
1318: $size - number of rows long the select element is
1319: $hash - the elements should be 'option' => 'shown text'
1320: (shown text should already have been &mt())
1321: $order - (optional) array ref of the order to show the elments in
1322:
1323: =cut
1324:
1325: #-------------------------------------------
1326: sub multiple_select_form {
1327: my ($name,$value,$size,$hash,$order)=@_;
1328: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1329: my $output='';
1330: if (! defined($size)) {
1331: $size = 4;
1332: if (scalar(keys(%$hash))<4) {
1333: $size = scalar(keys(%$hash));
1334: }
1335: }
1336: $output.="\n<select name='$name' size='$size' multiple='1'>";
1337: my @order = ref($order) ? @$order
1338: : sort(keys(%$hash));
1339: foreach my $key (@order) {
1340: $output.='<option value="'.&HTML::Entities::encode($key,'"<>&').'" ';
1341: $output.='selected="selected" ' if ($selected{$key});
1342: $output.='>'.$hash->{$key}."</option>\n";
1343: }
1344: $output.="</select>\n";
1345: return $output;
1346: }
1347:
1348: #-------------------------------------------
1349:
1350: =pod
1351:
1352: =item * select_form($defdom,$name,%hash)
1353:
1354: Returns a string containing a <select name='$name' size='1'> form to
1355: allow a user to select options from a hash option_name => displayed text.
1356: See lonrights.pm for an example invocation and use.
1357:
1358: =cut
1359:
1360: #-------------------------------------------
1361: sub select_form {
1362: my ($def,$name,%hash) = @_;
1363: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1364: my @keys;
1365: if (exists($hash{'select_form_order'})) {
1366: @keys=@{$hash{'select_form_order'}};
1367: } else {
1368: @keys=sort(keys(%hash));
1369: }
1370: foreach my $key (@keys) {
1371: $selectform.=
1372: '<option value="'.&HTML::Entities::encode($key,'"<>&').'" '.
1373: ($key eq $def ? 'selected="selected" ' : '').
1374: ">".&mt($hash{$key})."</option>\n";
1375: }
1376: $selectform.="</select>";
1377: return $selectform;
1378: }
1379:
1380: # For display filters
1381:
1382: sub display_filter {
1383: if (!$env{'form.show'}) { $env{'form.show'}=10; }
1384: if (!$env{'form.displayfilter'}) { $env{'form.displayfilter'}='currentfolder'; }
1385: return '<nobr><label>'.&mt('Records [_1]',
1386: &Apache::lonmeta::selectbox('show',$env{'form.show'},undef,
1387: (&mt('all'),10,20,50,100,1000,10000))).
1388: '</label></nobr> <nobr>'.
1389: &mt('Filter [_1]',
1390: &select_form($env{'form.displayfilter'},
1391: 'displayfilter',
1392: ('currentfolder' => 'Current folder/page',
1393: 'containing' => 'Containing phrase',
1394: 'none' => 'None'))).
1395: '<input type="text" name="containingphrase" size="30" value="'.&HTML::Entities::encode($env{'form.containingphrase'}).'" /></nobr>';
1396: }
1397:
1398: sub gradeleveldescription {
1399: my $gradelevel=shift;
1400: my %gradelevels=(0 => 'Not specified',
1401: 1 => 'Grade 1',
1402: 2 => 'Grade 2',
1403: 3 => 'Grade 3',
1404: 4 => 'Grade 4',
1405: 5 => 'Grade 5',
1406: 6 => 'Grade 6',
1407: 7 => 'Grade 7',
1408: 8 => 'Grade 8',
1409: 9 => 'Grade 9',
1410: 10 => 'Grade 10',
1411: 11 => 'Grade 11',
1412: 12 => 'Grade 12',
1413: 13 => 'Grade 13',
1414: 14 => '100 Level',
1415: 15 => '200 Level',
1416: 16 => '300 Level',
1417: 17 => '400 Level',
1418: 18 => 'Graduate Level');
1419: return &mt($gradelevels{$gradelevel});
1420: }
1421:
1422: sub select_level_form {
1423: my ($deflevel,$name)=@_;
1424: unless ($deflevel) { $deflevel=0; }
1425: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1426: for (my $i=0; $i<=18; $i++) {
1427: $selectform.="<option value=\"$i\" ".
1428: ($i==$deflevel ? 'selected="selected" ' : '').
1429: ">".&gradeleveldescription($i)."</option>\n";
1430: }
1431: $selectform.="</select>";
1432: return $selectform;
1433: }
1434:
1435: #-------------------------------------------
1436:
1437: =pod
1438:
1439: =item * select_dom_form($defdom,$name,$includeempty)
1440:
1441: Returns a string containing a <select name='$name' size='1'> form to
1442: allow a user to select the domain to preform an operation in.
1443: See loncreateuser.pm for an example invocation and use.
1444:
1445: If the $includeempty flag is set, it also includes an empty choice ("no domain
1446: selected");
1447:
1448: =cut
1449:
1450: #-------------------------------------------
1451: sub select_dom_form {
1452: my ($defdom,$name,$includeempty) = @_;
1453: my @domains = get_domains();
1454: if ($includeempty) { @domains=('',@domains); }
1455: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1456: foreach my $dom (@domains) {
1457: $selectdomain.="<option value=\"$dom\" ".
1458: ($dom eq $defdom ? 'selected="selected" ' : '').
1459: ">$dom</option>\n";
1460: }
1461: $selectdomain.="</select>";
1462: return $selectdomain;
1463: }
1464:
1465: #-------------------------------------------
1466:
1467: =pod
1468:
1469: =item * get_library_servers($domain)
1470:
1471: Returns a hash which contains keys like '103l3' and values like
1472: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1473: given $domain.
1474:
1475: =cut
1476:
1477: #-------------------------------------------
1478: sub get_library_servers {
1479: my $domain = shift;
1480: my %library_servers;
1481: foreach my $hostid (keys(%Apache::lonnet::libserv)) {
1482: if ($Apache::lonnet::hostdom{$hostid} eq $domain) {
1483: $library_servers{$hostid} = $Apache::lonnet::hostname{$hostid};
1484: }
1485: }
1486: return %library_servers;
1487: }
1488:
1489: #-------------------------------------------
1490:
1491: =pod
1492:
1493: =item * home_server_option_list($domain)
1494:
1495: returns a string which contains an <option> list to be used in a
1496: <select> form input. See loncreateuser.pm for an example.
1497:
1498: =cut
1499:
1500: #-------------------------------------------
1501: sub home_server_option_list {
1502: my $domain = shift;
1503: my %servers = &get_library_servers($domain);
1504: my $result = '';
1505: foreach my $hostid (sort(keys(%servers))) {
1506: $result.=
1507: '<option value="'.$hostid.'">'.
1508: $hostid.' '.$servers{$hostid}."</option>\n";
1509: }
1510: return $result;
1511: }
1512:
1513: =pod
1514:
1515: =back
1516:
1517: =cut
1518:
1519: ###############################################################
1520: ## Decoding User Agent ##
1521: ###############################################################
1522:
1523: =pod
1524:
1525: =head1 Decoding the User Agent
1526:
1527: =over 4
1528:
1529: =item * &decode_user_agent()
1530:
1531: Inputs: $r
1532:
1533: Outputs:
1534:
1535: =over 4
1536:
1537: =item * $httpbrowser
1538:
1539: =item * $clientbrowser
1540:
1541: =item * $clientversion
1542:
1543: =item * $clientmathml
1544:
1545: =item * $clientunicode
1546:
1547: =item * $clientos
1548:
1549: =back
1550:
1551: =back
1552:
1553: =cut
1554:
1555: ###############################################################
1556: ###############################################################
1557: sub decode_user_agent {
1558: my ($r)=@_;
1559: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1560: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1561: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1562: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1563: my $clientbrowser='unknown';
1564: my $clientversion='0';
1565: my $clientmathml='';
1566: my $clientunicode='0';
1567: for (my $i=0;$i<=$#browsertype;$i++) {
1568: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1569: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1570: $clientbrowser=$bname;
1571: $httpbrowser=~/$vreg/i;
1572: $clientversion=$1;
1573: $clientmathml=($clientversion>=$minv);
1574: $clientunicode=($clientversion>=$univ);
1575: }
1576: }
1577: my $clientos='unknown';
1578: if (($httpbrowser=~/linux/i) ||
1579: ($httpbrowser=~/unix/i) ||
1580: ($httpbrowser=~/ux/i) ||
1581: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1582: if (($httpbrowser=~/vax/i) ||
1583: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1584: if ($httpbrowser=~/next/i) { $clientos='next'; }
1585: if (($httpbrowser=~/mac/i) ||
1586: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1587: if ($httpbrowser=~/win/i) { $clientos='win'; }
1588: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1589: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1590: $clientunicode,$clientos,);
1591: }
1592:
1593: ###############################################################
1594: ## Authentication changing form generation subroutines ##
1595: ###############################################################
1596: ##
1597: ## All of the authform_xxxxxxx subroutines take their inputs in a
1598: ## hash, and have reasonable default values.
1599: ##
1600: ## formname = the name given in the <form> tag.
1601: #-------------------------------------------
1602:
1603: =pod
1604:
1605: =head1 Authentication Routines
1606:
1607: =over 4
1608:
1609: =item * authform_xxxxxx
1610:
1611: The authform_xxxxxx subroutines provide javascript and html forms which
1612: handle some of the conveniences required for authentication forms.
1613: This is not an optimal method, but it works.
1614:
1615: See loncreateuser.pm for invocation and use examples.
1616:
1617: =over 4
1618:
1619: =item * authform_header
1620:
1621: =item * authform_authorwarning
1622:
1623: =item * authform_nochange
1624:
1625: =item * authform_kerberos
1626:
1627: =item * authform_internal
1628:
1629: =item * authform_filesystem
1630:
1631: =back
1632:
1633: =back
1634:
1635: =cut
1636:
1637: #-------------------------------------------
1638: sub authform_header{
1639: my %in = (
1640: formname => 'cu',
1641: kerb_def_dom => '',
1642: @_,
1643: );
1644: $in{'formname'} = 'document.' . $in{'formname'};
1645: my $result='';
1646:
1647: #---------------------------------------------- Code for upper case translation
1648: my $Javascript_toUpperCase;
1649: unless ($in{kerb_def_dom}) {
1650: $Javascript_toUpperCase =<<"END";
1651: switch (choice) {
1652: case 'krb': currentform.elements[choicearg].value =
1653: currentform.elements[choicearg].value.toUpperCase();
1654: break;
1655: default:
1656: }
1657: END
1658: } else {
1659: $Javascript_toUpperCase = "";
1660: }
1661:
1662: my $radioval = "'nochange'";
1663: if (exists($in{'curr_authtype'}) &&
1664: defined($in{'curr_authtype'}) &&
1665: $in{'curr_authtype'} ne '') {
1666: $radioval = "'$in{'curr_authtype'}arg'";
1667: }
1668: my $argfield = 'null';
1669: if ( grep/^mode$/,(keys %in) ) {
1670: if ($in{'mode'} eq 'modifycourse') {
1671: if ( grep/^curr_authtype$/,(keys %in) ) {
1672: $radioval = "'$in{'curr_authtype'}'";
1673: }
1674: if ( grep/^curr_autharg$/,(keys %in) ) {
1675: unless ($in{'curr_autharg'} eq '') {
1676: $argfield = "'$in{'curr_autharg'}'";
1677: }
1678: }
1679: }
1680: }
1681:
1682: $result.=<<"END";
1683: var current = new Object();
1684: current.radiovalue = $radioval;
1685: current.argfield = $argfield;
1686:
1687: function changed_radio(choice,currentform) {
1688: var choicearg = choice + 'arg';
1689: // If a radio button in changed, we need to change the argfield
1690: if (current.radiovalue != choice) {
1691: current.radiovalue = choice;
1692: if (current.argfield != null) {
1693: currentform.elements[current.argfield].value = '';
1694: }
1695: if (choice == 'nochange') {
1696: current.argfield = null;
1697: } else {
1698: current.argfield = choicearg;
1699: switch(choice) {
1700: case 'krb':
1701: currentform.elements[current.argfield].value =
1702: "$in{'kerb_def_dom'}";
1703: break;
1704: default:
1705: break;
1706: }
1707: }
1708: }
1709: return;
1710: }
1711:
1712: function changed_text(choice,currentform) {
1713: var choicearg = choice + 'arg';
1714: if (currentform.elements[choicearg].value !='') {
1715: $Javascript_toUpperCase
1716: // clear old field
1717: if ((current.argfield != choicearg) && (current.argfield != null)) {
1718: currentform.elements[current.argfield].value = '';
1719: }
1720: current.argfield = choicearg;
1721: }
1722: set_auth_radio_buttons(choice,currentform);
1723: return;
1724: }
1725:
1726: function set_auth_radio_buttons(newvalue,currentform) {
1727: var i=0;
1728: while (i < currentform.login.length) {
1729: if (currentform.login[i].value == newvalue) { break; }
1730: i++;
1731: }
1732: if (i == currentform.login.length) {
1733: return;
1734: }
1735: current.radiovalue = newvalue;
1736: currentform.login[i].checked = true;
1737: return;
1738: }
1739: END
1740: return $result;
1741: }
1742:
1743: sub authform_authorwarning{
1744: my $result='';
1745: $result='<i>'.
1746: &mt('As a general rule, only authors or co-authors should be '.
1747: 'filesystem authenticated '.
1748: '(which allows access to the server filesystem).')."</i>\n";
1749: return $result;
1750: }
1751:
1752: sub authform_nochange{
1753: my %in = (
1754: formname => 'document.cu',
1755: kerb_def_dom => 'MSU.EDU',
1756: @_,
1757: );
1758: my $result = '<label>'.&mt('[_1] Do not change login data',
1759: '<input type="radio" name="login" value="nochange" '.
1760: 'checked="checked" onclick="'.
1761: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1762: '</label>';
1763: return $result;
1764: }
1765:
1766: sub authform_kerberos{
1767: my %in = (
1768: formname => 'document.cu',
1769: kerb_def_dom => 'MSU.EDU',
1770: kerb_def_auth => 'krb4',
1771: @_,
1772: );
1773: my ($check4,$check5,$krbarg);
1774: if ($in{'kerb_def_auth'} eq 'krb5') {
1775: $check5 = " checked=\"on\"";
1776: } else {
1777: $check4 = " checked=\"on\"";
1778: }
1779: $krbarg = $in{'kerb_def_dom'};
1780:
1781: my $krbcheck = "";
1782: if ( grep/^curr_authtype$/,(keys %in) ) {
1783: if ($in{'curr_authtype'} =~ m/^krb/) {
1784: $krbcheck = " checked=\"on\"";
1785: if ( grep/^curr_autharg$/,(keys %in) ) {
1786: $krbarg = $in{'curr_autharg'};
1787: }
1788: }
1789: }
1790:
1791: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1792: my $result .= &mt
1793: ('[_1] Kerberos authenticated with domain [_2] '.
1794: '[_3] Version 4 [_4] Version 5 [_5]',
1795: '<label><input type="radio" name="login" value="krb" '.
1796: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1797: '</label><input type="text" size="10" name="krbarg" '.
1798: 'value="'.$krbarg.'" '.
1799: 'onchange="'.$jscall.'" />',
1800: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1801: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1802: '</label>');
1803: return $result;
1804: }
1805:
1806: sub authform_internal{
1807: my %args = (
1808: formname => 'document.cu',
1809: kerb_def_dom => 'MSU.EDU',
1810: @_,
1811: );
1812:
1813: my $intcheck = "";
1814: my $intarg = 'value=""';
1815: if ( grep/^curr_authtype$/,(keys %args) ) {
1816: if ($args{'curr_authtype'} eq 'int') {
1817: $intcheck = " checked=\"on\"";
1818: if ( grep/^curr_autharg$/,(keys %args) ) {
1819: $intarg = "value=\"$args{'curr_autharg'}\"";
1820: }
1821: }
1822: }
1823:
1824: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1825: my $result.=&mt
1826: ('[_1] Internally authenticated (with initial password [_2])',
1827: '<label><input type="radio" name="login" value="int" '.$intcheck.
1828: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1829: '</label><input type="text" size="10" name="intarg" '.$intarg.
1830: ' onchange="'.$jscall.'" />');
1831: return $result;
1832: }
1833:
1834: sub authform_local{
1835: my %in = (
1836: formname => 'document.cu',
1837: kerb_def_dom => 'MSU.EDU',
1838: @_,
1839: );
1840:
1841: my $loccheck = "";
1842: my $locarg = 'value=""';
1843: if ( grep/^curr_authtype$/,(keys %in) ) {
1844: if ($in{'curr_authtype'} eq 'loc') {
1845: $loccheck = " checked=\"on\"";
1846: if ( grep/^curr_autharg$/,(keys %in) ) {
1847: $locarg = "value=\"$in{'curr_autharg'}\"";
1848: }
1849: }
1850: }
1851:
1852: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1853: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1854: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1855: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1856: '</label><input type="text" size="10" name="locarg" '.$locarg.
1857: ' onchange="'.$jscall.'" />');
1858: return $result;
1859: }
1860:
1861: sub authform_filesystem{
1862: my %in = (
1863: formname => 'document.cu',
1864: kerb_def_dom => 'MSU.EDU',
1865: @_,
1866: );
1867: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1868: my $result.= &mt
1869: ('[_1] Filesystem Authenticated (with initial password [_2])',
1870: '<label><input type="radio" name="login" value="fsys" '.
1871: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1872: '</label><input type="text" size="10" name="fsysarg" value="" '.
1873: 'onchange="'.$jscall.'" />');
1874: return $result;
1875: }
1876:
1877: ###############################################################
1878: ## Get Authentication Defaults for Domain ##
1879: ###############################################################
1880:
1881: =pod
1882:
1883: =head1 Domains and Authentication
1884:
1885: Returns default authentication type and an associated argument as
1886: listed in file 'domain.tab'.
1887:
1888: =over 4
1889:
1890: =item * get_auth_defaults
1891:
1892: get_auth_defaults($target_domain) returns the default authentication
1893: type and an associated argument (initial password or a kerberos domain).
1894: These values are stored in lonTabs/domain.tab
1895:
1896: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1897:
1898: If target_domain is not found in domain.tab, returns nothing ('').
1899:
1900: =cut
1901:
1902: #-------------------------------------------
1903: sub get_auth_defaults {
1904: my $domain=shift;
1905: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1906: }
1907: ###############################################################
1908: ## End Get Authentication Defaults for Domain ##
1909: ###############################################################
1910:
1911: ###############################################################
1912: ## Get Kerberos Defaults for Domain ##
1913: ###############################################################
1914: ##
1915: ## Returns default kerberos version and an associated argument
1916: ## as listed in file domain.tab. If not listed, provides
1917: ## appropriate default domain and kerberos version.
1918: ##
1919: #-------------------------------------------
1920:
1921: =pod
1922:
1923: =item * get_kerberos_defaults
1924:
1925: get_kerberos_defaults($target_domain) returns the default kerberos
1926: version and domain. If not found in domain.tabs, it defaults to
1927: version 4 and the domain of the server.
1928:
1929: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1930:
1931: =cut
1932:
1933: #-------------------------------------------
1934: sub get_kerberos_defaults {
1935: my $domain=shift;
1936: my ($krbdef,$krbdefdom) =
1937: &Apache::loncommon::get_auth_defaults($domain);
1938: unless ($krbdef =~/^krb/ && $krbdefdom) {
1939: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1940: my $krbdefdom=$1;
1941: $krbdefdom=~tr/a-z/A-Z/;
1942: $krbdef = "krb4";
1943: }
1944: return ($krbdef,$krbdefdom);
1945: }
1946:
1947: =pod
1948:
1949: =back
1950:
1951: =cut
1952:
1953: ###############################################################
1954: ## Thesaurus Functions ##
1955: ###############################################################
1956:
1957: =pod
1958:
1959: =head1 Thesaurus Functions
1960:
1961: =over 4
1962:
1963: =item * initialize_keywords
1964:
1965: Initializes the package variable %Keywords if it is empty. Uses the
1966: package variable $thesaurus_db_file.
1967:
1968: =cut
1969:
1970: ###################################################
1971:
1972: sub initialize_keywords {
1973: return 1 if (scalar keys(%Keywords));
1974: # If we are here, %Keywords is empty, so fill it up
1975: # Make sure the file we need exists...
1976: if (! -e $thesaurus_db_file) {
1977: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1978: " failed because it does not exist");
1979: return 0;
1980: }
1981: # Set up the hash as a database
1982: my %thesaurus_db;
1983: if (! tie(%thesaurus_db,'GDBM_File',
1984: $thesaurus_db_file,&GDBM_READER(),0640)){
1985: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1986: $thesaurus_db_file);
1987: return 0;
1988: }
1989: # Get the average number of appearances of a word.
1990: my $avecount = $thesaurus_db{'average.count'};
1991: # Put keywords (those that appear > average) into %Keywords
1992: while (my ($word,$data)=each (%thesaurus_db)) {
1993: my ($count,undef) = split /:/,$data;
1994: $Keywords{$word}++ if ($count > $avecount);
1995: }
1996: untie %thesaurus_db;
1997: # Remove special values from %Keywords.
1998: foreach my $value ('total.count','average.count') {
1999: delete($Keywords{$value}) if (exists($Keywords{$value}));
2000: }
2001: return 1;
2002: }
2003:
2004: ###################################################
2005:
2006: =pod
2007:
2008: =item * keyword($word)
2009:
2010: Returns true if $word is a keyword. A keyword is a word that appears more
2011: than the average number of times in the thesaurus database. Calls
2012: &initialize_keywords
2013:
2014: =cut
2015:
2016: ###################################################
2017:
2018: sub keyword {
2019: return if (!&initialize_keywords());
2020: my $word=lc(shift());
2021: $word=~s/\W//g;
2022: return exists($Keywords{$word});
2023: }
2024:
2025: ###############################################################
2026:
2027: =pod
2028:
2029: =item * get_related_words
2030:
2031: Look up a word in the thesaurus. Takes a scalar argument and returns
2032: an array of words. If the keyword is not in the thesaurus, an empty array
2033: will be returned. The order of the words returned is determined by the
2034: database which holds them.
2035:
2036: Uses global $thesaurus_db_file.
2037:
2038: =cut
2039:
2040: ###############################################################
2041: sub get_related_words {
2042: my $keyword = shift;
2043: my %thesaurus_db;
2044: if (! -e $thesaurus_db_file) {
2045: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
2046: "failed because the file does not exist");
2047: return ();
2048: }
2049: if (! tie(%thesaurus_db,'GDBM_File',
2050: $thesaurus_db_file,&GDBM_READER(),0640)){
2051: return ();
2052: }
2053: my @Words=();
2054: my $count=0;
2055: if (exists($thesaurus_db{$keyword})) {
2056: # The first element is the number of times
2057: # the word appears. We do not need it now.
2058: my (undef,@RelatedWords) = (split(/:/,$thesaurus_db{$keyword}));
2059: my (undef,$mostfrequentcount)=split(/\,/,$RelatedWords[0]);
2060: my $threshold=$mostfrequentcount/10;
2061: foreach my $possibleword (@RelatedWords) {
2062: my ($word,$wordcount)=split(/\,/,$possibleword);
2063: if ($wordcount>$threshold) {
2064: push(@Words,$word);
2065: $count++;
2066: if ($count>10) { last; }
2067: }
2068: }
2069: }
2070: untie %thesaurus_db;
2071: return @Words;
2072: }
2073:
2074: =pod
2075:
2076: =back
2077:
2078: =cut
2079:
2080: # -------------------------------------------------------------- Plaintext name
2081: =pod
2082:
2083: =head1 User Name Functions
2084:
2085: =over 4
2086:
2087: =item * plainname($uname,$udom,$first)
2088:
2089: Takes a users logon name and returns it as a string in
2090: "first middle last generation" form
2091: if $first is set to 'lastname' then it returns it as
2092: 'lastname generation, firstname middlename' if their is a lastname
2093:
2094: =cut
2095:
2096:
2097: ###############################################################
2098: sub plainname {
2099: my ($uname,$udom,$first)=@_;
2100: my %names=&getnames($uname,$udom);
2101: my $name=&Apache::lonnet::format_name($names{'firstname'},
2102: $names{'middlename'},
2103: $names{'lastname'},
2104: $names{'generation'},$first);
2105: $name=~s/^\s+//;
2106: $name=~s/\s+$//;
2107: $name=~s/\s+/ /g;
2108: if ($name !~ /\S/) { $name=$uname.':'.$udom; }
2109: return $name;
2110: }
2111:
2112: # -------------------------------------------------------------------- Nickname
2113: =pod
2114:
2115: =item * nickname($uname,$udom)
2116:
2117: Gets a users name and returns it as a string as
2118:
2119: ""nickname""
2120:
2121: if the user has a nickname or
2122:
2123: "first middle last generation"
2124:
2125: if the user does not
2126:
2127: =cut
2128:
2129: sub nickname {
2130: my ($uname,$udom)=@_;
2131: my %names=&getnames($uname,$udom);
2132: my $name=$names{'nickname'};
2133: if ($name) {
2134: $name='"'.$name.'"';
2135: } else {
2136: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
2137: $names{'lastname'}.' '.$names{'generation'};
2138: $name=~s/\s+$//;
2139: $name=~s/\s+/ /g;
2140: }
2141: return $name;
2142: }
2143:
2144: sub getnames {
2145: my ($uname,$udom)=@_;
2146: if ($udom eq 'public' && $uname eq 'public') {
2147: return ('lastname' => &mt('Public'));
2148: }
2149: my $id=$uname.':'.$udom;
2150: my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
2151: if ($cached) {
2152: return %{$names};
2153: } else {
2154: my %loadnames=&Apache::lonnet::get('environment',
2155: ['firstname','middlename','lastname','generation','nickname'],
2156: $udom,$uname);
2157: &Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
2158: return %loadnames;
2159: }
2160: }
2161:
2162: sub getemails {
2163: my ($uname,$udom)=@_;
2164: if ($udom eq 'public' && $uname eq 'public') {
2165: return;
2166: }
2167: if (!$udom) { $udom=$env{'user.domain'}; }
2168: if (!$uname) { $uname=$env{'user.name'}; }
2169: my $id=$uname.':'.$udom;
2170: my ($names,$cached)=&Apache::lonnet::is_cached_new('emailscache',$id);
2171: if ($cached) {
2172: return %{$names};
2173: } else {
2174: my %loadnames=&Apache::lonnet::get('environment',
2175: ['notification','critnotification',
2176: 'permanentemail'],
2177: $udom,$uname);
2178: &Apache::lonnet::do_cache_new('emailscache',$id,\%loadnames);
2179: return %loadnames;
2180: }
2181: }
2182:
2183: # ------------------------------------------------------------------ Screenname
2184:
2185: =pod
2186:
2187: =item * screenname($uname,$udom)
2188:
2189: Gets a users screenname and returns it as a string
2190:
2191: =cut
2192:
2193: sub screenname {
2194: my ($uname,$udom)=@_;
2195: if ($uname eq $env{'user.name'} &&
2196: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
2197: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
2198: return $names{'screenname'};
2199: }
2200:
2201:
2202: # ------------------------------------------------------------- Message Wrapper
2203:
2204: sub messagewrapper {
2205: my ($link,$username,$domain,$subject,$text)=@_;
2206: return
2207: '<a href="/adm/email?compose=individual&'.
2208: 'recname='.$username.'&recdom='.$domain.
2209: '&subject='.&escape($subject).'&text='.&escape($text).'" '.
2210: 'title="'.&mt('Send message').'">'.$link.'</a>';
2211: }
2212: # --------------------------------------------------------------- Notes Wrapper
2213:
2214: sub noteswrapper {
2215: my ($link,$un,$do)=@_;
2216: return
2217: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
2218: }
2219: # ------------------------------------------------------------- Aboutme Wrapper
2220:
2221: sub aboutmewrapper {
2222: my ($link,$username,$domain,$target)=@_;
2223: if (!defined($username) && !defined($domain)) {
2224: return;
2225: }
2226: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
2227: ($target?' target="$target"':'').' title="'.&mt("View this user's personal page").'">'.$link.'</a>';
2228: }
2229:
2230: # ------------------------------------------------------------ Syllabus Wrapper
2231:
2232:
2233: sub syllabuswrapper {
2234: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2235: if ($fontcolor) {
2236: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2237: }
2238: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
2239: }
2240:
2241: sub track_student_link {
2242: my ($linktext,$sname,$sdom,$target,$start) = @_;
2243: my $link ="/adm/trackstudent?";
2244: my $title = 'View recent activity';
2245: if (defined($sname) && $sname !~ /^\s*$/ &&
2246: defined($sdom) && $sdom !~ /^\s*$/) {
2247: $link .= "selected_student=$sname:$sdom";
2248: $title .= ' of this student';
2249: }
2250: if (defined($target) && $target !~ /^\s*$/) {
2251: $target = qq{target="$target"};
2252: } else {
2253: $target = '';
2254: }
2255: if ($start) { $link.='&start='.$start; }
2256:
2257: return qq{<a href="$link" title="$title" $target>$linktext</a>}.
2258: &help_open_topic('View_recent_activity');
2259: }
2260:
2261: =pod
2262:
2263: =back
2264:
2265: =head1 Access .tab File Data
2266:
2267: =over 4
2268:
2269: =item * languageids()
2270:
2271: returns list of all language ids
2272:
2273: =cut
2274:
2275: sub languageids {
2276: return sort(keys(%language));
2277: }
2278:
2279: =pod
2280:
2281: =item * languagedescription()
2282:
2283: returns description of a specified language id
2284:
2285: =cut
2286:
2287: sub languagedescription {
2288: my $code=shift;
2289: return ($supported_language{$code}?'* ':'').
2290: $language{$code}.
2291: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2292: }
2293:
2294: sub plainlanguagedescription {
2295: my $code=shift;
2296: return $language{$code};
2297: }
2298:
2299: sub supportedlanguagecode {
2300: my $code=shift;
2301: return $supported_language{$code};
2302: }
2303:
2304: =pod
2305:
2306: =item * copyrightids()
2307:
2308: returns list of all copyrights
2309:
2310: =cut
2311:
2312: sub copyrightids {
2313: return sort(keys(%cprtag));
2314: }
2315:
2316: =pod
2317:
2318: =item * copyrightdescription()
2319:
2320: returns description of a specified copyright id
2321:
2322: =cut
2323:
2324: sub copyrightdescription {
2325: return &mt($cprtag{shift(@_)});
2326: }
2327:
2328: =pod
2329:
2330: =item * source_copyrightids()
2331:
2332: returns list of all source copyrights
2333:
2334: =cut
2335:
2336: sub source_copyrightids {
2337: return sort(keys(%scprtag));
2338: }
2339:
2340: =pod
2341:
2342: =item * source_copyrightdescription()
2343:
2344: returns description of a specified source copyright id
2345:
2346: =cut
2347:
2348: sub source_copyrightdescription {
2349: return &mt($scprtag{shift(@_)});
2350: }
2351:
2352: =pod
2353:
2354: =item * filecategories()
2355:
2356: returns list of all file categories
2357:
2358: =cut
2359:
2360: sub filecategories {
2361: return sort(keys(%category_extensions));
2362: }
2363:
2364: =pod
2365:
2366: =item * filecategorytypes()
2367:
2368: returns list of file types belonging to a given file
2369: category
2370:
2371: =cut
2372:
2373: sub filecategorytypes {
2374: my ($cat) = @_;
2375: return @{$category_extensions{lc($cat)}};
2376: }
2377:
2378: =pod
2379:
2380: =item * fileembstyle()
2381:
2382: returns embedding style for a specified file type
2383:
2384: =cut
2385:
2386: sub fileembstyle {
2387: return $fe{lc(shift(@_))};
2388: }
2389:
2390: sub filemimetype {
2391: return $fm{lc(shift(@_))};
2392: }
2393:
2394:
2395: sub filecategoryselect {
2396: my ($name,$value)=@_;
2397: return &select_form($value,$name,
2398: '' => &mt('Any category'),
2399: map { $_,$_ } sort(keys(%category_extensions)));
2400: }
2401:
2402: =pod
2403:
2404: =item * filedescription()
2405:
2406: returns description for a specified file type
2407:
2408: =cut
2409:
2410: sub filedescription {
2411: my $file_description = $fd{lc(shift())};
2412: $file_description =~ s:([\[\]]):~$1:g;
2413: return &mt($file_description);
2414: }
2415:
2416: =pod
2417:
2418: =item * filedescriptionex()
2419:
2420: returns description for a specified file type with
2421: extra formatting
2422:
2423: =cut
2424:
2425: sub filedescriptionex {
2426: my $ex=shift;
2427: my $file_description = $fd{lc($ex)};
2428: $file_description =~ s:([\[\]]):~$1:g;
2429: return '.'.$ex.' '.&mt($file_description);
2430: }
2431:
2432: # End of .tab access
2433: =pod
2434:
2435: =back
2436:
2437: =cut
2438:
2439: # ------------------------------------------------------------------ File Types
2440: sub fileextensions {
2441: return sort(keys(%fe));
2442: }
2443:
2444: # ----------------------------------------------------------- Display Languages
2445: # returns a hash with all desired display languages
2446: #
2447:
2448: sub display_languages {
2449: my %languages=();
2450: foreach my $lang (&preferred_languages()) {
2451: $languages{$lang}=1;
2452: }
2453: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2454: if ($env{'form.displaylanguage'}) {
2455: foreach my $lang (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2456: $languages{$lang}=1;
2457: }
2458: }
2459: return %languages;
2460: }
2461:
2462: sub preferred_languages {
2463: my @languages=();
2464: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2465: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2466: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2467: }
2468: if ($env{'environment.languages'}) {
2469: @languages=(@languages,
2470: split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'}));
2471: }
2472: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2473: if ($browser) {
2474: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2475: }
2476: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2477: @languages=(@languages,
2478: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2479: }
2480: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2481: @languages=(@languages,
2482: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2483: }
2484: if ($Apache::lonnet::domain_lang_def{
2485: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2486: @languages=(@languages,
2487: $Apache::lonnet::domain_lang_def{
2488: $Apache::lonnet::perlvar{'lonDefDomain'}});
2489: }
2490: # turn "en-ca" into "en-ca,en"
2491: my @genlanguages;
2492: foreach my $lang (@languages) {
2493: unless ($lang=~/\w/) { next; }
2494: push (@genlanguages,$lang);
2495: if ($lang=~/(\-|\_)/) {
2496: push(@genlanguages,(split(/(\-|\_)/,$lang))[0]);
2497: }
2498: }
2499: return @genlanguages;
2500: }
2501:
2502: ###############################################################
2503: ## Student Answer Attempts ##
2504: ###############################################################
2505:
2506: =pod
2507:
2508: =head1 Alternate Problem Views
2509:
2510: =over 4
2511:
2512: =item * get_previous_attempt($symb, $username, $domain, $course,
2513: $getattempt, $regexp, $gradesub)
2514:
2515: Return string with previous attempt on problem. Arguments:
2516:
2517: =over 4
2518:
2519: =item * $symb: Problem, including path
2520:
2521: =item * $username: username of the desired student
2522:
2523: =item * $domain: domain of the desired student
2524:
2525: =item * $course: Course ID
2526:
2527: =item * $getattempt: Leave blank for all attempts, otherwise put
2528: something
2529:
2530: =item * $regexp: if string matches this regexp, the string will be
2531: sent to $gradesub
2532:
2533: =item * $gradesub: routine that processes the string if it matches $regexp
2534:
2535: =back
2536:
2537: The output string is a table containing all desired attempts, if any.
2538:
2539: =cut
2540:
2541: sub get_previous_attempt {
2542: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2543: my $prevattempts='';
2544: no strict 'refs';
2545: if ($symb) {
2546: my (%returnhash)=
2547: &Apache::lonnet::restore($symb,$course,$domain,$username);
2548: if ($returnhash{'version'}) {
2549: my %lasthash=();
2550: my $version;
2551: for ($version=1;$version<=$returnhash{'version'};$version++) {
2552: foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2553: $lasthash{$key}=$returnhash{$version.':'.$key};
2554: }
2555: }
2556: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2557: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2558: foreach my $key (sort(keys(%lasthash))) {
2559: my ($ign,@parts) = split(/\./,$key);
2560: if ($#parts > 0) {
2561: my $data=$parts[-1];
2562: pop(@parts);
2563: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2564: } else {
2565: if ($#parts == 0) {
2566: $prevattempts.='<th>'.$parts[0].'</th>';
2567: } else {
2568: $prevattempts.='<th>'.$ign.'</th>';
2569: }
2570: }
2571: }
2572: if ($getattempt eq '') {
2573: for ($version=1;$version<=$returnhash{'version'};$version++) {
2574: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2575: foreach my $key (sort(keys(%lasthash))) {
2576: my $value;
2577: if ($key =~ /timestamp/) {
2578: $value=scalar(localtime($returnhash{$version.':'.$key}));
2579: } else {
2580: $value=$returnhash{$version.':'.$key};
2581: }
2582: $prevattempts.='<td>'.&unescape($value).' </td>';
2583: }
2584: }
2585: }
2586: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2587: foreach my $key (sort(keys(%lasthash))) {
2588: my $value;
2589: if ($key =~ /timestamp/) {
2590: $value=scalar(localtime($lasthash{$key}));
2591: } else {
2592: $value=$lasthash{$key};
2593: }
2594: $value=&unescape($value);
2595: if ($key =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2596: $prevattempts.='<td>'.$value.' </td>';
2597: }
2598: $prevattempts.='</tr></table></td></tr></table>';
2599: } else {
2600: $prevattempts='Nothing submitted - no attempts.';
2601: }
2602: } else {
2603: $prevattempts='No data.';
2604: }
2605: }
2606:
2607: sub relative_to_absolute {
2608: my ($url,$output)=@_;
2609: my $parser=HTML::TokeParser->new(\$output);
2610: my $token;
2611: my $thisdir=$url;
2612: my @rlinks=();
2613: while ($token=$parser->get_token) {
2614: if ($token->[0] eq 'S') {
2615: if ($token->[1] eq 'a') {
2616: if ($token->[2]->{'href'}) {
2617: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2618: }
2619: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2620: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2621: } elsif ($token->[1] eq 'base') {
2622: $thisdir=$token->[2]->{'href'};
2623: }
2624: }
2625: }
2626: $thisdir=~s-/[^/]*$--;
2627: foreach my $link (@rlinks) {
2628: unless (($link=~/^http:\/\//i) ||
2629: ($link=~/^\//) ||
2630: ($link=~/^javascript:/i) ||
2631: ($link=~/^mailto:/i) ||
2632: ($link=~/^\#/)) {
2633: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$link);
2634: $output=~s/(\"|\'|\=\s*)\Q$link\E(\"|\'|\s|\>)/$1$newlocation$2/;
2635: }
2636: }
2637: # -------------------------------------------------- Deal with Applet codebases
2638: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2639: return $output;
2640: }
2641:
2642: =pod
2643:
2644: =item * get_student_view
2645:
2646: show a snapshot of what student was looking at
2647:
2648: =cut
2649:
2650: sub get_student_view {
2651: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2652: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2653: my (%form);
2654: my @elements=('symb','courseid','domain','username');
2655: foreach my $element (@elements) {
2656: $form{'grade_'.$element}=eval '$'.$element #'
2657: }
2658: if (defined($moreenv)) {
2659: %form=(%form,%{$moreenv});
2660: }
2661: if (defined($target)) { $form{'grade_target'} = $target; }
2662: $feedurl=&Apache::lonnet::clutter($feedurl);
2663: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2664: $userview=~s/\<body[^\>]*\>//gi;
2665: $userview=~s/\<\/body\>//gi;
2666: $userview=~s/\<html\>//gi;
2667: $userview=~s/\<\/html\>//gi;
2668: $userview=~s/\<head\>//gi;
2669: $userview=~s/\<\/head\>//gi;
2670: $userview=~s/action\s*\=/would_be_action\=/gi;
2671: $userview=&relative_to_absolute($feedurl,$userview);
2672: return $userview;
2673: }
2674:
2675: =pod
2676:
2677: =item * get_student_answers()
2678:
2679: show a snapshot of how student was answering problem
2680:
2681: =cut
2682:
2683: sub get_student_answers {
2684: my ($symb,$username,$domain,$courseid,%form) = @_;
2685: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2686: my (%moreenv);
2687: my @elements=('symb','courseid','domain','username');
2688: foreach my $element (@elements) {
2689: $moreenv{'grade_'.$element}=eval '$'.$element #'
2690: }
2691: $moreenv{'grade_target'}='answer';
2692: %moreenv=(%form,%moreenv);
2693: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2694: return $userview;
2695: }
2696:
2697: =pod
2698:
2699: =item * &submlink()
2700:
2701: Inputs: $text $uname $udom $symb $target
2702:
2703: Returns: A link to grades.pm such as to see the SUBM view of a student
2704:
2705: =cut
2706:
2707: ###############################################
2708: sub submlink {
2709: my ($text,$uname,$udom,$symb,$target)=@_;
2710: if (!($uname && $udom)) {
2711: (my $cursymb, my $courseid,$udom,$uname)=
2712: &Apache::lonnet::whichuser($symb);
2713: if (!$symb) { $symb=$cursymb; }
2714: }
2715: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2716: $symb=&escape($symb);
2717: if ($target) { $target="target=\"$target\""; }
2718: return '<a href="/adm/grades?&command=submission&'.
2719: 'symb='.$symb.'&student='.$uname.
2720: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2721: }
2722: ##############################################
2723:
2724: =pod
2725:
2726: =item * &pgrdlink()
2727:
2728: Inputs: $text $uname $udom $symb $target
2729:
2730: Returns: A link to grades.pm such as to see the PGRD view of a student
2731:
2732: =cut
2733:
2734: ###############################################
2735: sub pgrdlink {
2736: my $link=&submlink(@_);
2737: $link=~s/(&command=submission)/$1&showgrading=yes/;
2738: return $link;
2739: }
2740: ##############################################
2741:
2742: =pod
2743:
2744: =item * &pprmlink()
2745:
2746: Inputs: $text $uname $udom $symb $target
2747:
2748: Returns: A link to parmset.pm such as to see the PPRM view of a
2749: student and a specific resource
2750:
2751: =cut
2752:
2753: ###############################################
2754: sub pprmlink {
2755: my ($text,$uname,$udom,$symb,$target)=@_;
2756: if (!($uname && $udom)) {
2757: (my $cursymb, my $courseid,$udom,$uname)=
2758: &Apache::lonnet::whichuser($symb);
2759: if (!$symb) { $symb=$cursymb; }
2760: }
2761: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2762: $symb=&escape($symb);
2763: if ($target) { $target="target=\"$target\""; }
2764: return '<a href="/adm/parmset?&command=set&'.
2765: 'symb='.$symb.'&uname='.$uname.
2766: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2767: }
2768: ##############################################
2769:
2770: =pod
2771:
2772: =back
2773:
2774: =cut
2775:
2776: ###############################################
2777:
2778:
2779: sub timehash {
2780: my @ltime=localtime(shift);
2781: return ( 'seconds' => $ltime[0],
2782: 'minutes' => $ltime[1],
2783: 'hours' => $ltime[2],
2784: 'day' => $ltime[3],
2785: 'month' => $ltime[4]+1,
2786: 'year' => $ltime[5]+1900,
2787: 'weekday' => $ltime[6],
2788: 'dayyear' => $ltime[7]+1,
2789: 'dlsav' => $ltime[8] );
2790: }
2791:
2792: sub utc_string {
2793: my ($date)=@_;
2794: return strftime("%Y%m%dT%H%M%SZ",gmtime($date));
2795: }
2796:
2797: sub maketime {
2798: my %th=@_;
2799: return POSIX::mktime(
2800: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2801: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2802: }
2803:
2804: #########################################
2805:
2806: sub findallcourses {
2807: my ($roles,$uname,$udom) = @_;
2808: my %roles;
2809: if (ref($roles)) { %roles = map { $_ => 1 } @{$roles}; }
2810: my %courses;
2811: my $now=time;
2812: if (!defined($uname)) {
2813: $uname = $env{'user.name'};
2814: }
2815: if (!defined($udom)) {
2816: $udom = $env{'user.domain'};
2817: }
2818: if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
2819: my %roleshash = &Apache::lonnet::dump('roles',$udom,$uname);
2820: if (!%roles) {
2821: %roles = (
2822: cc => 1,
2823: in => 1,
2824: ep => 1,
2825: ta => 1,
2826: cr => 1,
2827: st => 1,
2828: );
2829: }
2830: foreach my $entry (keys(%roleshash)) {
2831: my ($trole,$tend,$tstart) = split(/_/,$roleshash{$entry});
2832: if ($trole =~ /^cr/) {
2833: next if (!exists($roles{$trole}) && !exists($roles{'cr'}));
2834: } else {
2835: next if (!exists($roles{$trole}));
2836: }
2837: if ($tend) {
2838: next if ($tend < $now);
2839: }
2840: if ($tstart) {
2841: next if ($tstart > $now);
2842: }
2843: my ($cdom,$cnum,$sec,$cnumpart,$secpart,$role,$realsec);
2844: (undef,$cdom,$cnumpart,$secpart) = split(/\//,$entry);
2845: if ($secpart eq '') {
2846: ($cnum,$role) = split(/_/,$cnumpart);
2847: $sec = 'none';
2848: $realsec = '';
2849: } else {
2850: $cnum = $cnumpart;
2851: ($sec,$role) = split(/_/,$secpart);
2852: $realsec = $sec;
2853: }
2854: $courses{$cdom.'_'.$cnum}{$sec} = $trole.'/'.$cdom.'/'.$cnum.'/'.$realsec;
2855: }
2856: } else {
2857: foreach my $key (keys(%env)) {
2858: if ( $key=~m{^user\.role\.(\w+)\./($match_domain)/($match_courseid)/?(\w*)$} ||
2859: $key=~m{^user\.role\.(cr/$match_domain/$match_username/\w+)\./($match_domain)/($match_courseid)/?(\w*)$}) {
2860: my ($role,$cdom,$cnum,$sec) = ($1,$2,$3,$4);
2861: next if ($role eq 'ca' || $role eq 'aa');
2862: next if (%roles && !exists($roles{$role}));
2863: my ($starttime,$endtime)=split(/\./,$env{$key});
2864: my $active=1;
2865: if ($starttime) {
2866: if ($now<$starttime) { $active=0; }
2867: }
2868: if ($endtime) {
2869: if ($now>$endtime) { $active=0; }
2870: }
2871: if ($active) {
2872: if ($sec eq '') {
2873: $sec = 'none';
2874: }
2875: $courses{$cdom.'_'.$cnum}{$sec} =
2876: $role.'/'.$cdom.'/'.$cnum.'/'.$sec;
2877: }
2878: }
2879: }
2880: }
2881: return %courses;
2882: }
2883:
2884: ###############################################
2885:
2886: sub blockcheck {
2887: my ($setters,$activity,$uname,$udom) = @_;
2888:
2889: if (!defined($udom)) {
2890: $udom = $env{'user.domain'};
2891: }
2892: if (!defined($uname)) {
2893: $uname = $env{'user.name'};
2894: }
2895:
2896: my ($startblock,$endblock);
2897:
2898: # If uname and udom are for a course, check for blocks in the course.
2899:
2900: if (&Apache::lonnet::is_course($udom,$uname)) {
2901: my %records = &Apache::lonnet::dump('comm_block',$udom,$uname);
2902: ($startblock,$endblock)=&get_blocks($setters,$activity,$udom,$uname);
2903: return ($startblock,$endblock);
2904: }
2905:
2906: my %live_courses = &findallcourses(undef,$uname,$udom);
2907:
2908: # If uname is for a user, and activity is course-specific, i.e.,
2909: # boards, chat or groups, check for blocking in current course only.
2910:
2911: if (($activity eq 'boards' || $activity eq 'chat' ||
2912: $activity eq 'groups') && ($env{'request.course.id'})) {
2913: foreach my $key (keys(%live_courses)) {
2914: if ($key ne $env{'request.course.id'}) {
2915: delete($live_courses{$key});
2916: }
2917: }
2918: }
2919:
2920: my $otheruser = 0;
2921: my %own_courses;
2922: if ((($uname ne $env{'user.name'})) || ($udom ne $env{'user.domain'})) {
2923: # Resource belongs to user other than current user.
2924: $otheruser = 1;
2925: # Gather courses for current user
2926: %own_courses =
2927: &findallcourses(undef,$env{'user.name'},$env{'user.domain'});
2928: }
2929:
2930: # Gather active course roles - course coordinator, instructor,
2931: # exam proctor, ta, student, or custom role.
2932:
2933: foreach my $course (keys(%live_courses)) {
2934: my ($cdom,$cnum);
2935: if ((defined($env{'course.'.$course.'.domain'})) && (defined($env{'course.'.$course.'.num'}))) {
2936: $cdom = $env{'course.'.$course.'.domain'};
2937: $cnum = $env{'course.'.$course.'.num'};
2938: } else {
2939: ($cdom,$cnum) = split(/_/,$course);
2940: }
2941: my $no_ownblock = 0;
2942: my $no_userblock = 0;
2943: if ($otheruser) {
2944: # Check if current user has 'evb' priv for this
2945: if (defined($own_courses{$course})) {
2946: foreach my $sec (keys(%{$own_courses{$course}})) {
2947: my $checkrole = 'cm./'.$cdom.'/'.$cnum;
2948: if ($sec ne 'none') {
2949: $checkrole .= '/'.$sec;
2950: }
2951: if (&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) {
2952: $no_ownblock = 1;
2953: last;
2954: }
2955: }
2956: }
2957: # if they have 'evb' priv and are currently not playing student
2958: next if (($no_ownblock) &&
2959: ($env{'request.role'} !~ m{^st\./$cdom/$cnum}));
2960: }
2961: foreach my $sec (keys(%{$live_courses{$course}})) {
2962: my $checkrole = 'cm./'.$cdom.'/'.$cnum;
2963: if ($sec ne 'none') {
2964: $checkrole .= '/'.$sec;
2965: }
2966: # Resource belongs to user other than current user.
2967: # Assemble privs for that user, and check for 'evb' priv.
2968: if ($otheruser) {
2969: # Resource belongs to user other than current user.
2970: # Assemble privs for that user, and check for 'evb' priv.
2971: my ($trole,$tdom,$tnum,$tsec);
2972: my $entry = $live_courses{$course}{$sec};
2973: if ($entry =~ /^cr/) {
2974: ($trole,$tdom,$tnum,$tsec) =
2975: ($entry =~ m|^(cr/$match_domain/$match_username/\w+)\./($match_domain)/($match_username)/?(\w*)$|);
2976: } else {
2977: ($trole,$tdom,$tnum,$tsec) = split(/\//,$entry);
2978: }
2979: my ($spec,$area,$trest,%allroles,%userroles);
2980: $area = '/'.$tdom.'/'.$tnum;
2981: $trest = $tnum;
2982: if ($tsec ne '') {
2983: $area .= '/'.$tsec;
2984: $trest .= '/'.$tsec;
2985: }
2986: $spec = $trole.'.'.$area;
2987: if ($trole =~ /^cr/) {
2988: &Apache::lonnet::custom_roleprivs(\%allroles,$trole,
2989: $tdom,$spec,$trest,$area);
2990: } else {
2991: &Apache::lonnet::standard_roleprivs(\%allroles,$trole,
2992: $tdom,$spec,$trest,$area);
2993: }
2994: my ($author,$adv) = &Apache::lonnet::set_userprivs(\%userroles,\%allroles);
2995: if ($userroles{'user.priv.'.$checkrole} =~ /evb\&([^\:]*)/) {
2996: if ($1) {
2997: $no_userblock = 1;
2998: last;
2999: }
3000: }
3001: } else {
3002: # Resource belongs to current user
3003: # Check for 'evb' priv via lonnet::allowed().
3004: if (&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) {
3005: $no_ownblock = 1;
3006: last;
3007: }
3008: }
3009: }
3010: # if they have the evb priv and are currently not playing student
3011: next if (($no_ownblock) &&
3012: ($env{'request.role'} !~ m{^st\./\Q$cdom\E/\Q$cnum\E}));
3013: next if ($no_userblock);
3014:
3015: # Retrieve blocking times and identity of blocker for course
3016: # of specified user, unless user has 'evb' privilege.
3017:
3018: ($startblock,$endblock)=&get_blocks($setters,$activity,$cdom,$cnum);
3019: }
3020: return ($startblock,$endblock);
3021: }
3022:
3023: sub get_blocks {
3024: my ($setters,$activity,$cdom,$cnum) = @_;
3025: my $startblock = 0;
3026: my $endblock = 0;
3027: my $course = $cdom.'_'.$cnum;
3028: $setters->{$course} = {};
3029: $setters->{$course}{'staff'} = [];
3030: $setters->{$course}{'times'} = [];
3031: my %records = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
3032: foreach my $record (keys(%records)) {
3033: my ($start,$end) = ($record =~ m/^(\d+)____(\d+)$/);
3034: if ($start <= time && $end >= time) {
3035: my ($staff_name,$staff_dom,$title,$blocks) =
3036: &parse_block_record($records{$record});
3037: if ($blocks->{$activity} eq 'on') {
3038: push(@{$$setters{$course}{'staff'}},[$staff_name,$staff_dom]);
3039: push(@{$$setters{$course}{'times'}}, [$start,$end]);
3040: if ( ($startblock == 0) || ($startblock > $start) ) {
3041: $startblock = $start;
3042: }
3043: if ( ($endblock == 0) || ($endblock < $end) ) {
3044: $endblock = $end;
3045: }
3046: }
3047: }
3048: }
3049: return ($startblock,$endblock);
3050: }
3051:
3052: sub parse_block_record {
3053: my ($record) = @_;
3054: my ($setuname,$setudom,$title,$blocks);
3055: if (ref($record) eq 'HASH') {
3056: ($setuname,$setudom) = split(/:/,$record->{'setter'});
3057: $title = &unescape($record->{'event'});
3058: $blocks = $record->{'blocks'};
3059: } else {
3060: my @data = split(/:/,$record,3);
3061: if (scalar(@data) eq 2) {
3062: $title = $data[1];
3063: ($setuname,$setudom) = split(/@/,$data[0]);
3064: } else {
3065: ($setuname,$setudom,$title) = @data;
3066: }
3067: $blocks = { 'com' => 'on' };
3068: }
3069: return ($setuname,$setudom,$title,$blocks);
3070: }
3071:
3072: sub build_block_table {
3073: my ($startblock,$endblock,$setters) = @_;
3074: my %lt = &Apache::lonlocal::texthash(
3075: 'cacb' => 'Currently active communication blocks',
3076: 'cour' => 'Course',
3077: 'dura' => 'Duration',
3078: 'blse' => 'Block set by'
3079: );
3080: my $output;
3081: $output = '<br />'.$lt{'cacb'}.':<br />';
3082: $output .= &start_data_table();
3083: $output .= '
3084: <tr>
3085: <th>'.$lt{'cour'}.'</th>
3086: <th>'.$lt{'dura'}.'</th>
3087: <th>'.$lt{'blse'}.'</th>
3088: </tr>
3089: ';
3090: foreach my $course (keys(%{$setters})) {
3091: my %courseinfo=&Apache::lonnet::coursedescription($course);
3092: for (my $i=0; $i<@{$$setters{$course}{staff}}; $i++) {
3093: my ($uname,$udom) = @{$$setters{$course}{staff}[$i]};
3094: my $fullname = &plainname($uname,$udom);
3095: if (defined($env{'user.name'}) && defined($env{'user.domain'})
3096: && $env{'user.name'} ne 'public'
3097: && $env{'user.domain'} ne 'public') {
3098: $fullname = &aboutmewrapper($fullname,$uname,$udom);
3099: }
3100: my ($openblock,$closeblock) = @{$$setters{$course}{times}[$i]};
3101: $openblock = &Apache::lonlocal::locallocaltime($openblock);
3102: $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
3103: $output .= &Apache::loncommon::start_data_table_row().
3104: '<td>'.$courseinfo{'description'}.'</td>'.
3105: '<td>'.$openblock.' to '.$closeblock.'</td>'.
3106: '<td>'.$fullname.'</td>'.
3107: &Apache::loncommon::end_data_table_row();
3108: }
3109: }
3110: $output .= &end_data_table();
3111: }
3112:
3113: sub blocking_status {
3114: my ($activity,$uname,$udom) = @_;
3115: my %setters;
3116: my ($blocked,$output,$ownitem,$is_course);
3117: my ($startblock,$endblock)=&blockcheck(\%setters,$activity,$uname,$udom);
3118: if ($startblock && $endblock) {
3119: $blocked = 1;
3120: if (wantarray) {
3121: my $category;
3122: if ($activity eq 'boards') {
3123: $category = 'Discussion posts in this course';
3124: } elsif ($activity eq 'blogs') {
3125: $category = 'Blogs';
3126: } elsif ($activity eq 'port') {
3127: if (defined($uname) && defined($udom)) {
3128: if ($uname eq $env{'user.name'} &&
3129: $udom eq $env{'user.domain'}) {
3130: $ownitem = 1;
3131: }
3132: }
3133: $is_course = &Apache::lonnet::is_course($udom,$uname);
3134: if ($ownitem) {
3135: $category = 'Your portfolio files';
3136: } elsif ($is_course) {
3137: my $coursedesc;
3138: foreach my $course (keys(%setters)) {
3139: my %courseinfo =
3140: &Apache::lonnet::coursedescription($course);
3141: $coursedesc = $courseinfo{'description'};
3142: }
3143: $category = "Group files in the course '$coursedesc'";
3144: } else {
3145: $category = 'Portfolio files belonging to ';
3146: if ($env{'user.name'} eq 'public' &&
3147: $env{'user.domain'} eq 'public') {
3148: $category .= &plainname($uname,$udom);
3149: } else {
3150: $category .= &aboutmewrapper(&plainname($uname,$udom),$uname,$udom);
3151: }
3152: }
3153: } elsif ($activity eq 'groups') {
3154: $category = 'Groups in this course';
3155: }
3156: my $showstart = &Apache::lonlocal::locallocaltime($startblock);
3157: my $showend = &Apache::lonlocal::locallocaltime($endblock);
3158: $output = '<br />'.&mt('[_1] will be inaccessible between [_2] and [_3] because communication is being blocked.',$category,$showstart,$showend).'<br />';
3159: if (!($activity eq 'port' && !($ownitem) && !($is_course))) {
3160: $output .= &build_block_table($startblock,$endblock,\%setters);
3161: }
3162: }
3163: }
3164: if (wantarray) {
3165: return ($blocked,$output);
3166: } else {
3167: return $blocked;
3168: }
3169: }
3170:
3171: ###############################################
3172:
3173: =pod
3174:
3175: =head1 Domain Template Functions
3176:
3177: =over 4
3178:
3179: =item * &determinedomain()
3180:
3181: Inputs: $domain (usually will be undef)
3182:
3183: Returns: Determines which domain should be used for designs
3184:
3185: =cut
3186:
3187: ###############################################
3188: sub determinedomain {
3189: my $domain=shift;
3190: if (! $domain) {
3191: # Determine domain if we have not been given one
3192: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
3193: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
3194: if ($env{'request.role.domain'}) {
3195: $domain=$env{'request.role.domain'};
3196: }
3197: }
3198: return $domain;
3199: }
3200: ###############################################
3201: =pod
3202:
3203: =item * &domainlogo()
3204:
3205: Inputs: $domain (usually will be undef)
3206:
3207: Returns: A link to a domain logo, if the domain logo exists.
3208: If the domain logo does not exist, a description of the domain.
3209:
3210: =cut
3211:
3212: ###############################################
3213: sub domainlogo {
3214: my $domain = &determinedomain(shift);
3215: # See if there is a logo
3216: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
3217: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
3218: return '<img src="'.$logo.'" alt="'.$domain.'" />';
3219: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
3220: return $Apache::lonnet::domaindescription{$domain};
3221: } else {
3222: return '';
3223: }
3224: }
3225: ##############################################
3226:
3227: =pod
3228:
3229: =item * &designparm()
3230:
3231: Inputs: $which parameter; $domain (usually will be undef)
3232:
3233: Returns: value of designparamter $which
3234:
3235: =cut
3236:
3237:
3238: ##############################################
3239: sub designparm {
3240: my ($which,$domain)=@_;
3241: if ($env{'browser.blackwhite'} eq 'on') {
3242: if ($which=~/\.(font|alink|vlink|link)$/) {
3243: return '#000000';
3244: }
3245: if ($which=~/\.(pgbg|sidebg)$/) {
3246: return '#FFFFFF';
3247: }
3248: if ($which=~/\.tabbg$/) {
3249: return '#CCCCCC';
3250: }
3251: }
3252: if (exists($env{'environment.color.'.$which})) {
3253: return $env{'environment.color.'.$which};
3254: }
3255: $domain=&determinedomain($domain);
3256: if (exists($designhash{$domain.'.'.$which})) {
3257: return $designhash{$domain.'.'.$which};
3258: } else {
3259: return $designhash{'default.'.$which};
3260: }
3261: }
3262:
3263: ###############################################
3264: ###############################################
3265:
3266: =pod
3267:
3268: =back
3269:
3270: =head1 HTTP Helpers
3271:
3272: =over 4
3273:
3274: =item * &bodytag()
3275:
3276: Returns a uniform header for LON-CAPA web pages.
3277:
3278: Inputs:
3279:
3280: =over 4
3281:
3282: =item * $title, A title to be displayed on the page.
3283:
3284: =item * $function, the current role (can be undef).
3285:
3286: =item * $addentries, extra parameters for the <body> tag.
3287:
3288: =item * $bodyonly, if defined, only return the <body> tag.
3289:
3290: =item * $domain, if defined, force a given domain.
3291:
3292: =item * $forcereg, if page should register as content page (relevant for
3293: text interface only)
3294:
3295: =item * $customtitle, alternate text to use instead of $title
3296: in the title box that appears, this text
3297: is not auto translated like the $title is
3298:
3299: =item * $notopbar, if true, keep the 'what is this' info but remove the
3300: navigational links
3301:
3302: =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
3303:
3304: =item * $notitle, if true keep the nav controls, but remove the title bar
3305:
3306: =item * $no_inline_link, if true and in remote mode, don't show the
3307: 'Switch To Inline Menu' link
3308:
3309: =item * $args, optional argument valid values are
3310: no_auto_mt_title -> prevents &mt()ing the title arg
3311:
3312: =back
3313:
3314: Returns: A uniform header for LON-CAPA web pages.
3315: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
3316: If $bodyonly is undef or zero, an html string containing a <body> tag and
3317: other decorations will be returned.
3318:
3319: =cut
3320:
3321: sub bodytag {
3322: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
3323: $notopbar,$bgcolor,$notitle,$no_inline_link,$args)=@_;
3324:
3325: if (!$args->{'no_auto_mt_title'}) { $title = &mt($title); }
3326:
3327: $function = &get_users_function() if (!$function);
3328: my $img = &designparm($function.'.img',$domain);
3329: my $font = &designparm($function.'.font',$domain);
3330: my $pgbg = $bgcolor || &designparm($function.'.pgbg',$domain);
3331:
3332: my %design = ( 'style' => 'margin-top: 0px',
3333: 'bgcolor' => $pgbg,
3334: 'text' => $font,
3335: 'alink' => &designparm($function.'.alink',$domain),
3336: 'vlink' => &designparm($function.'.vlink',$domain),
3337: 'link' => &designparm($function.'.link',$domain),);
3338: @design{keys(%$addentries)} = @$addentries{keys(%$addentries)};
3339:
3340: # role and realm
3341: my ($role,$realm) = split(/\./,$env{'request.role'},2);
3342: if ($role eq 'ca') {
3343: my ($rdom,$rname) = ($realm =~ m{^/($match_domain)/($match_username)$});
3344: $realm = &plainname($rname,$rdom).':'.$rdom;
3345: }
3346: # realm
3347: if ($env{'request.course.id'}) {
3348: if ($env{'request.role'} !~ /^cr/) {
3349: $role = &Apache::lonnet::plaintext($role,&course_type());
3350: }
3351: $realm = $env{'course.'.$env{'request.course.id'}.'.description'};
3352: } else {
3353: $role = &Apache::lonnet::plaintext($role);
3354: }
3355:
3356: if (!$realm) { $realm=' '; }
3357: # Set messages
3358: my $messages=&domainlogo($domain);
3359: # Port for miniserver
3360: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
3361: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
3362:
3363: my $extra_body_attr = &make_attr_string($forcereg,\%design);
3364:
3365: # construct main body tag
3366: my $bodytag = "<body $extra_body_attr>".
3367: &Apache::lontexconvert::init_math_support();
3368:
3369: if ($bodyonly
3370: || ($env{'request.state'} eq 'construct'
3371: && $env{'environment.remote'} ne 'off' )) {
3372: return $bodytag;
3373: } elsif ($env{'browser.interface'} eq 'textual') {
3374: # Accessibility
3375:
3376: $bodytag.=&Apache::lonmenu::menubuttons($forcereg,$forcereg);
3377: if (!$notitle) {
3378: $bodytag.='<h1>LON-CAPA: '.$title.'</h1>';
3379: }
3380: return $bodytag;
3381: }
3382:
3383: my $name = &plainname($env{'user.name'},$env{'user.domain'});
3384: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
3385: undef($role);
3386: } else {
3387: $name = &aboutmewrapper($name,$env{'user.name'},$env{'user.domain'});
3388: }
3389:
3390: my $roleinfo=(<<ENDROLE);
3391: <td class="LC_title_bar_who">
3392: <div class="LC_title_bar_name">
3393: $name
3394:
3395: </div>
3396: <div class="LC_title_bar_role">
3397: $role
3398: </div>
3399: <div class="LC_title_bar_realm">
3400: $realm
3401: </div>
3402: </td>
3403: ENDROLE
3404:
3405: my $titleinfo = '<span class="LC_title_bar_title">'.$title.'</span>';
3406: if ($customtitle) {
3407: $titleinfo = $customtitle;
3408: }
3409: #
3410: # Extra info if you are the DC
3411: my $dc_info = '';
3412: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
3413: $env{'course.'.$env{'request.course.id'}.
3414: '.domain'}.'/'})) {
3415: my $cid = $env{'request.course.id'};
3416: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
3417: $dc_info =~ s/\s+$//;
3418: $dc_info = '('.$dc_info.')';
3419: }
3420:
3421: if ($env{'environment.remote'} eq 'off') {
3422: # No Remote
3423: if ($env{'request.state'} eq 'construct') {
3424: $forcereg=1;
3425: }
3426:
3427: if (!$customtitle && $env{'request.state'} eq 'construct') {
3428: # this is for resources; directories have customtitle, and crumbs
3429: # and select recent are created in lonpubdir.pm
3430: my ($uname,$thisdisfn)=
3431: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
3432: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
3433: $formaction=~s/\/+/\//g;
3434:
3435: my $parentpath = '';
3436: my $lastitem = '';
3437: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
3438: $parentpath = $1;
3439: $lastitem = $2;
3440: } else {
3441: $lastitem = $thisdisfn;
3442: }
3443: $titleinfo =
3444: &Apache::loncommon::help_open_menu('','',3,'Authoring').
3445: '<b>Construction Space</b>: '.
3446: '<form name="dirs" method="post" action="'.$formaction
3447: .'" target="_top"><tt><b>'
3448: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
3449: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
3450: .'</form>'
3451: .&Apache::lonmenu::constspaceform();
3452: }
3453:
3454: my $titletable;
3455: if (!$notitle) {
3456: $titletable =
3457: '<table id="LC_title_bar">'.
3458: "<tr><td> $titleinfo $dc_info</td>".$roleinfo.
3459: '</tr></table>';
3460: }
3461: if ($notopbar) {
3462: $bodytag .= $titletable;
3463: } else {
3464: if ($env{'request.state'} eq 'construct') {
3465: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg,
3466: $titletable);
3467: } else {
3468: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg).
3469: $titletable;
3470: }
3471: }
3472: return $bodytag;
3473: }
3474:
3475: #
3476: # Top frame rendering, Remote is up
3477: #
3478:
3479: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
3480: $lonhttpdPort.$img.'" alt="'.$function.'" />';
3481:
3482: # Explicit link to get inline menu
3483: my $menu= ($no_inline_link?''
3484: :'<br /><a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a>');
3485: #
3486: if ($notitle) {
3487: return $bodytag;
3488: }
3489: return(<<ENDBODY);
3490: $bodytag
3491: <table id="LC_title_bar" class="LC_with_remote">
3492: <tr><td class="LC_title_bar_role_logo">$upperleft</td>
3493: <td class="LC_title_bar_domain_logo">$messages </td>
3494: </tr>
3495: <tr><td>$titleinfo $dc_info $menu</td>
3496: $roleinfo
3497: </tr>
3498: </table>
3499: ENDBODY
3500: }
3501:
3502: sub make_attr_string {
3503: my ($register,$attr_ref) = @_;
3504:
3505: if ($attr_ref && !ref($attr_ref)) {
3506: die("addentries Must be a hash ref ".
3507: join(':',caller(1))." ".
3508: join(':',caller(0))." ");
3509: }
3510:
3511: if ($register) {
3512: my ($on_load,$on_unload);
3513: foreach my $key (keys(%{$attr_ref})) {
3514: if (lc($key) eq 'onload') {
3515: $on_load.=$attr_ref->{$key}.';';
3516: delete($attr_ref->{$key});
3517:
3518: } elsif (lc($key) eq 'onunload') {
3519: $on_unload.=$attr_ref->{$key}.';';
3520: delete($attr_ref->{$key});
3521: }
3522: }
3523: $attr_ref->{'onload'} =
3524: &Apache::lonmenu::loadevents(). $on_load;
3525: $attr_ref->{'onunload'}=
3526: &Apache::lonmenu::unloadevents().$on_unload;
3527: }
3528:
3529: # Accessibility font enhance
3530: if ($env{'browser.fontenhance'} eq 'on') {
3531: my $style;
3532: foreach my $key (keys(%{$attr_ref})) {
3533: if (lc($key) eq 'style') {
3534: $style.=$attr_ref->{$key}.';';
3535: delete($attr_ref->{$key});
3536: }
3537: }
3538: $attr_ref->{'style'}=$style.'; font-size: x-large;';
3539: }
3540:
3541: if ($env{'browser.blackwhite'} eq 'on') {
3542: delete($attr_ref->{'font'});
3543: delete($attr_ref->{'link'});
3544: delete($attr_ref->{'alink'});
3545: delete($attr_ref->{'vlink'});
3546: delete($attr_ref->{'bgcolor'});
3547: delete($attr_ref->{'background'});
3548: }
3549:
3550: my $attr_string;
3551: foreach my $attr (keys(%$attr_ref)) {
3552: $attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
3553: }
3554: return $attr_string;
3555: }
3556:
3557:
3558: ###############################################
3559: ###############################################
3560:
3561: =pod
3562:
3563: =back
3564:
3565: =head1 HTML Helpers
3566:
3567: =over 4
3568:
3569: =item * &endbodytag()
3570:
3571: Returns a uniform footer for LON-CAPA web pages.
3572:
3573: Inputs: none
3574:
3575: =back
3576:
3577: =cut
3578:
3579: sub endbodytag {
3580: my $endbodytag='</body>';
3581: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
3582: if ( exists( $env{'internal.head.redirect'} ) ) {
3583: $endbodytag=
3584: "<br /><a href=\"$env{'internal.head.redirect'}\">".
3585: &mt('Continue').'</a>'.
3586: $endbodytag;
3587: }
3588: return $endbodytag;
3589: }
3590:
3591: =pod
3592:
3593: =over 4
3594:
3595: =item * &standard_css()
3596:
3597: Returns a style sheet
3598:
3599: Inputs: (all optional)
3600: domain -> force to color decorate a page for a specific
3601: domain
3602: function -> force usage of a specific rolish color scheme
3603: bgcolor -> override the default page bgcolor
3604:
3605: =back
3606:
3607: =cut
3608:
3609: sub standard_css {
3610: my ($function,$domain,$bgcolor) = @_;
3611: $function = &get_users_function() if (!$function);
3612: my $img = &designparm($function.'.img', $domain);
3613: my $tabbg = &designparm($function.'.tabbg', $domain);
3614: my $font = &designparm($function.'.font', $domain);
3615: my $sidebg = &designparm($function.'.sidebg',$domain);
3616: my $pgbg_or_bgcolor =
3617: $bgcolor ||
3618: &designparm($function.'.pgbg', $domain);
3619: my $pgbg = &designparm($function.'.pgbg', $domain);
3620: my $alink = &designparm($function.'.alink', $domain);
3621: my $vlink = &designparm($function.'.vlink', $domain);
3622: my $link = &designparm($function.'.link', $domain);
3623:
3624: my $sans = 'Arial,Helvetica,sans-serif';
3625: my $mono = 'monospace';
3626: my $data_table_head = $tabbg;
3627: my $data_table_light = '#EEEEEE';
3628: my $data_table_dark = '#DDDDDD';
3629: my $data_table_darker = '#CCCCCC';
3630: my $data_table_highlight = '#FFFF00';
3631: my $mail_new = '#FFBB77';
3632: my $mail_new_hover = '#DD9955';
3633: my $mail_read = '#BBBB77';
3634: my $mail_read_hover = '#999944';
3635: my $mail_replied = '#AAAA88';
3636: my $mail_replied_hover = '#888855';
3637: my $mail_other = '#99BBBB';
3638: my $mail_other_hover = '#669999';
3639: my $table_header = '#DDDDDD';
3640: my $feedback_link_bg = '#BBBBBB';
3641:
3642: my $border = ($env{'browser.type'} eq 'explorer') ? '0px 2px 0px 2px'
3643: : '0px 3px 0px 4px';
3644:
3645: return <<END;
3646: h1, h2, h3, th { font-family: $sans }
3647: a:focus { color: red; background: yellow }
3648: table.thinborder { border-collapse: collapse; }
3649: table.thinborder tr th { border-style: solid; border-width: 1px; background: $tabbg;}
3650: table.thinborder tr td { border-style: solid; border-width: 1px}
3651:
3652: form, .inline { display: inline; }
3653: .center { text-align: center; }
3654: .LC_filename {font-family: $mono;}
3655: .LC_error {
3656: color: red;
3657: font-size: larger;
3658: }
3659: .LC_warning,
3660: .LC_diff_removed {
3661: color: red;
3662: }
3663: .LC_success,
3664: .LC_diff_added {
3665: color: green;
3666: }
3667: .LC_icon {
3668: border: 0px;
3669: }
3670:
3671: table.LC_pastsubmission {
3672: border: 1px solid black;
3673: margin: 2px;
3674: }
3675:
3676: table#LC_top_nav, table#LC_menubuttons {
3677: width: 100%;
3678: background: $pgbg;
3679: border: 2px;
3680: border-collapse: separate;
3681: padding: 0px;
3682: }
3683:
3684: table#LC_title_bar, table.LC_breadcrumbs, table#LC_nav_location,
3685: table#LC_title_bar.LC_with_remote {
3686: width: 100%;
3687: border-color: $pgbg;
3688: border-style: solid;
3689: border-width: $border;
3690:
3691: background: $pgbg;
3692: font-family: $sans;
3693: border-collapse: collapse;
3694: padding: 0px;
3695: }
3696:
3697: table.LC_docs_path {
3698: width: 100%;
3699: border: 0;
3700: background: $pgbg;
3701: font-family: $sans;
3702: border-collapse: collapse;
3703: padding: 0px;
3704: }
3705:
3706: table#LC_title_bar td {
3707: background: $tabbg;
3708: }
3709: table#LC_title_bar td.LC_title_bar_who {
3710: background: $tabbg;
3711: color: $font;
3712: font: small $sans;
3713: text-align: right;
3714: }
3715: span.LC_metadata {
3716: font-family: $sans;
3717: }
3718: span.LC_title_bar_title {
3719: font: bold x-large $sans;
3720: }
3721: table#LC_title_bar td.LC_title_bar_domain_logo {
3722: background: $sidebg;
3723: text-align: right;
3724: padding: 0px;
3725: }
3726: table#LC_title_bar td.LC_title_bar_role_logo {
3727: background: $sidebg;
3728: padding: 0px;
3729: }
3730:
3731: table#LC_menubuttons_mainmenu {
3732: background: $pgbg;
3733: border: 0px;
3734: border-spacing: 1px;
3735: padding: 0px 1px;
3736: margin: 0px;
3737: border-collapse: separate;
3738: }
3739: table#LC_menubuttons img, table#LC_menubuttons_mainmenu img {
3740: border: 0px;
3741: }
3742: table#LC_top_nav td {
3743: background: $tabbg;
3744: border: 0px;
3745: font-size: small;
3746: }
3747: table#LC_top_nav td a, div#LC_top_nav a {
3748: color: $font;
3749: font-family: $sans;
3750: }
3751: table#LC_top_nav td.LC_top_nav_logo {
3752: background: $tabbg;
3753: text-align: left;
3754: white-space: nowrap;
3755: width: 31px;
3756: }
3757: table#LC_top_nav td.LC_top_nav_logo img {
3758: border: 0px;
3759: vertical-align: bottom;
3760: }
3761: table#LC_top_nav td.LC_top_nav_exit,
3762: table#LC_top_nav td.LC_top_nav_help {
3763: width: 2.0em;
3764: }
3765: table#LC_top_nav td.LC_top_nav_login {
3766: width: 4.0em;
3767: text-align: center;
3768: }
3769: table.LC_breadcrumbs td, table.LC_docs_path td {
3770: background: $tabbg;
3771: color: $font;
3772: font-family: $sans;
3773: font-size: smaller;
3774: }
3775: table.LC_breadcrumbs td.LC_breadcrumbs_component,
3776: table.LC_docs_path td.LC_docs_path_component {
3777: background: $tabbg;
3778: color: $font;
3779: font-family: $sans;
3780: font-size: larger;
3781: text-align: right;
3782: }
3783: td.LC_table_cell_checkbox {
3784: text-align: center;
3785: }
3786:
3787: .LC_menubuttons_inline_text {
3788: color: $font;
3789: font-family: $sans;
3790: font-size: smaller;
3791: }
3792:
3793: td.LC_menubuttons_text {
3794: color: $font;
3795: font-family: $sans;
3796: }
3797: td.LC_menubuttons_img {
3798: background: $tabbg;
3799: }
3800: .LC_current_location {
3801: font-family: $sans;
3802: background: $tabbg;
3803: }
3804: .LC_new_mail {
3805: font-family: $sans;
3806: font-weight: bold;
3807: }
3808:
3809: table.LC_aboutme_port {
3810: border: 0px;
3811: border-collapse: collapse;
3812: border-spacing: 0px;
3813: }
3814: table.LC_data_table, table.LC_mail_list {
3815: border: 1px solid #000000;
3816: border-collapse: separate;
3817: border-spacing: 1px;
3818: }
3819: .LC_data_table_dense {
3820: font-size: small;
3821: }
3822: table.LC_data_table tr th, table.LC_calendar tr th, table.LC_mail_list tr th {
3823: font-weight: bold;
3824: background-color: $data_table_head;
3825: font-size: smaller;
3826: }
3827: table.LC_data_table tr td,
3828: table.LC_aboutme_port tr td {
3829: background-color: $data_table_light;
3830: padding: 2px;
3831: }
3832: table.LC_data_table tr.LC_even_row td,
3833: table.LC_aboutme_port tr.LC_even_row td {
3834: background-color: $data_table_dark;
3835: }
3836: table.LC_data_table tr.LC_data_table_highlight td {
3837: background-color: $data_table_darker;
3838: }
3839: table.LC_data_table tr.LC_empty_row td,
3840: table.LC_whatsnew tr.LC_empty_row td {
3841: background-color: #FFFFFF;
3842: font-weight: bold;
3843: font-style: italic;
3844: text-align: center;
3845: padding: 8px;
3846: }
3847: table.LC_whatsnew tr.LC_empty_row td {
3848: padding: 4ex
3849: }
3850: table.LC_whatsnew {
3851: }
3852:
3853: table.LC_whatsnew tr th,
3854: table.LC_whatsnew tr.LC_info_row td {
3855: background-color: #CCC;
3856: font-weight: bold;
3857: font-size: small;
3858: text-align: right;
3859: }
3860: table.LC_whatsnew tr td {
3861: background-color: #FFF;
3862: font-size: small;
3863: text-align: right;
3864: }
3865: table.LC_whatsnew tr td.LC_first_item {
3866: text-align: left;
3867: }
3868:
3869: table.LC_whatsnew tr.LC_odd_row td {
3870: background-color: #EEE;
3871: }
3872:
3873: table.LC_createuser {
3874: }
3875:
3876: table.LC_createuser tr.LC_section_row td {
3877: font-size: smaller;
3878: }
3879:
3880: table.LC_createuser tr.LC_info_row td {
3881: background-color: #CCC;
3882: font-weight: bold;
3883: text-align: center;
3884: }
3885:
3886: table.LC_calendar {
3887: border: 1px solid #000000;
3888: border-collapse: collapse;
3889: }
3890: table.LC_calendar_pickdate {
3891: font-size: xx-small;
3892: }
3893: table.LC_calendar tr td {
3894: border: 1px solid #000000;
3895: vertical-align: top;
3896: }
3897: table.LC_calendar tr td.LC_calendar_day_empty {
3898: background-color: $data_table_dark;
3899: }
3900: table.LC_calendar tr td.LC_calendar_day_current {
3901: background-color: $data_table_highlight;
3902: }
3903:
3904: table.LC_mail_list tr.LC_mail_new {
3905: background-color: $mail_new;
3906: }
3907: table.LC_mail_list tr.LC_mail_new:hover {
3908: background-color: $mail_new_hover;
3909: }
3910: table.LC_mail_list tr.LC_mail_read {
3911: background-color: $mail_read;
3912: }
3913: table.LC_mail_list tr.LC_mail_read:hover {
3914: background-color: $mail_read_hover;
3915: }
3916: table.LC_mail_list tr.LC_mail_replied {
3917: background-color: $mail_replied;
3918: }
3919: table.LC_mail_list tr.LC_mail_replied:hover {
3920: background-color: $mail_replied_hover;
3921: }
3922: table.LC_mail_list tr.LC_mail_other {
3923: background-color: $mail_other;
3924: }
3925: table.LC_mail_list tr.LC_mail_other:hover {
3926: background-color: $mail_other_hover;
3927: }
3928: table.LC_mail_list tr.LC_mail_even {
3929: }
3930: table.LC_mail_list tr.LC_mail_odd {
3931: }
3932:
3933:
3934: table#LC_portfolio_actions {
3935: width: auto;
3936: background: $pgbg;
3937: border: 0px;
3938: border-spacing: 2px 2px;
3939: padding: 0px;
3940: margin: 0px;
3941: border-collapse: separate;
3942: }
3943: table#LC_portfolio_actions td.LC_label {
3944: background: $tabbg;
3945: text-align: right;
3946: }
3947: table#LC_portfolio_actions td.LC_value {
3948: background: $tabbg;
3949: }
3950:
3951: table#LC_cstr_controls {
3952: width: 100%;
3953: border-collapse: collapse;
3954: }
3955: table#LC_cstr_controls tr td {
3956: border: 4px solid $pgbg;
3957: padding: 4px;
3958: text-align: center;
3959: background: $tabbg;
3960: }
3961: table#LC_cstr_controls tr th {
3962: border: 4px solid $pgbg;
3963: background: $table_header;
3964: text-align: center;
3965: font-family: $sans;
3966: font-size: smaller;
3967: }
3968:
3969: table#LC_browser {
3970:
3971: }
3972: table#LC_browser tr th {
3973: background: $table_header;
3974: }
3975: table#LC_browser tr td {
3976: padding: 2px;
3977: }
3978: table#LC_browser tr.LC_browser_file,
3979: table#LC_browser tr.LC_browser_file_published {
3980: background: #CCFF88;
3981: }
3982: table#LC_browser tr.LC_browser_file_locked,
3983: table#LC_browser tr.LC_browser_file_unpublished {
3984: background: #FFAA99;
3985: }
3986: table#LC_browser tr.LC_browser_file_obsolete {
3987: background: #AAAAAA;
3988: }
3989: table#LC_browser tr.LC_browser_file_modified,
3990: table#LC_browser tr.LC_browser_file_metamodified {
3991: background: #FFFF77;
3992: }
3993: table#LC_browser tr.LC_browser_folder {
3994: background: #CCCCFF;
3995: }
3996: span.LC_current_location {
3997: font-size: x-large;
3998: background: $pgbg;
3999: }
4000:
4001: span.LC_parm_menu_item {
4002: font-size: larger;
4003: font-family: $sans;
4004: }
4005: span.LC_parm_scope_all {
4006: color: red;
4007: }
4008: span.LC_parm_scope_folder {
4009: color: green;
4010: }
4011: span.LC_parm_scope_resource {
4012: color: orange;
4013: }
4014: span.LC_parm_part {
4015: color: blue;
4016: }
4017: span.LC_parm_folder, span.LC_parm_symb {
4018: font-size: x-small;
4019: font-family: $mono;
4020: color: #AAAAAA;
4021: }
4022:
4023: td.LC_parm_overview_level_menu, td.LC_parm_overview_map_menu,
4024: td.LC_parm_overview_parm_selectors, td.LC_parm_overview_parm_restrictions {
4025: border: 1px solid black;
4026: border-collapse: collapse;
4027: }
4028: table.LC_parm_overview_restrictions td {
4029: border-width: 1px 4px 1px 4px;
4030: border-style: solid;
4031: border-color: $pgbg;
4032: text-align: center;
4033: }
4034: table.LC_parm_overview_restrictions th {
4035: background: $tabbg;
4036: border-width: 1px 4px 1px 4px;
4037: border-style: solid;
4038: border-color: $pgbg;
4039: }
4040: table#LC_helpmenu {
4041: border: 0px;
4042: height: 55px;
4043: border-spacing: 0px;
4044: }
4045:
4046: table#LC_helpmenu fieldset legend {
4047: font-size: larger;
4048: font-weight: bold;
4049: }
4050: table#LC_helpmenu_links {
4051: width: 100%;
4052: border: 1px solid black;
4053: background: $pgbg;
4054: padding: 0px;
4055: border-spacing: 1px;
4056: }
4057: table#LC_helpmenu_links tr td {
4058: padding: 1px;
4059: background: $tabbg;
4060: text-align: center;
4061: font-weight: bold;
4062: }
4063:
4064: table#LC_helpmenu_links a:link, table#LC_helpmenu_links a:visited,
4065: table#LC_helpmenu_links a:active {
4066: text-decoration: none;
4067: color: $font;
4068: }
4069: table#LC_helpmenu_links a:hover {
4070: text-decoration: underline;
4071: color: $vlink;
4072: }
4073:
4074: .LC_chrt_popup_exists {
4075: border: 1px solid #339933;
4076: margin: -1px;
4077: }
4078: .LC_chrt_popup_up {
4079: border: 1px solid yellow;
4080: margin: -1px;
4081: }
4082: .LC_chrt_popup {
4083: border: 1px solid #8888FF;
4084: background: #CCCCFF;
4085: }
4086:
4087: table.LC_pick_box {
4088: width: 100%;
4089: border-collapse: separate;
4090: background: white;
4091: border: 1px solid black;
4092: border-spacing: 1px;
4093: }
4094: table.LC_pick_box td.LC_pick_box_title {
4095: background: $tabbg;
4096: font-weight: bold;
4097: text-align: right;
4098: width: 184px;
4099: padding: 8px;
4100: }
4101: table.LC_pick_box td.LC_pick_box_separator {
4102: padding: 0px;
4103: height: 1px;
4104: background: black;
4105: }
4106: table.LC_pick_box td.LC_pick_box_submit {
4107: text-align: right;
4108: }
4109:
4110: table.LC_group_priv_box {
4111: background: white;
4112: border: 1px solid black;
4113: border-spacing: 1px;
4114: }
4115: table.LC_group_priv_box td.LC_pick_box_title {
4116: background: $tabbg;
4117: font-weight: bold;
4118: text-align: right;
4119: width: 184px;
4120: }
4121: table.LC_group_priv_box td.LC_groups_fixed {
4122: background: $data_table_light;
4123: text-align: center;
4124: }
4125: table.LC_group_priv_box td.LC_groups_optional {
4126: background: $data_table_dark;
4127: text-align: center;
4128: }
4129: table.LC_group_priv_box td.LC_groups_functionality {
4130: background: $data_table_darker;
4131: text-align: center;
4132: font-weight: bold;
4133: }
4134: table.LC_group_priv td {
4135: text-align: left;
4136: padding: 0px;
4137: }
4138:
4139: table.LC_notify_front_page {
4140: background: white;
4141: border: 1px solid black;
4142: padding: 8px;
4143: }
4144: table.LC_notify_front_page td {
4145: padding: 8px;
4146: }
4147: .LC_navbuttons {
4148: margin: 2ex 0ex 2ex 0ex;
4149: }
4150: .LC_topic_bar {
4151: font-family: $sans;
4152: font-weight: bold;
4153: width: 100%;
4154: background: $tabbg;
4155: vertical-align: middle;
4156: margin: 2ex 0ex 2ex 0ex;
4157: }
4158: .LC_topic_bar span {
4159: vertical-align: middle;
4160: }
4161: .LC_topic_bar img {
4162: vertical-align: bottom;
4163: }
4164: table.LC_course_group_status {
4165: margin: 20px;
4166: }
4167: table.LC_status_selector td {
4168: vertical-align: top;
4169: text-align: center;
4170: padding: 4px;
4171: }
4172: table.LC_descriptive_input td.LC_description {
4173: vertical-align: top;
4174: text-align: right;
4175: font-weight: bold;
4176: }
4177: table.LC_feedback_link {
4178: background: $feedback_link_bg;
4179: }
4180: span.LC_feedback_link {
4181: background: $feedback_link_bg;
4182: font-size: larger;
4183: }
4184:
4185: END
4186: }
4187:
4188: =pod
4189:
4190: =over 4
4191:
4192: =item * &headtag()
4193:
4194: Returns a uniform footer for LON-CAPA web pages.
4195:
4196: Inputs: $title - optional title for the head
4197: $head_extra - optional extra HTML to put inside the <head>
4198: $args - optional arguments
4199: force_register - if is true call registerurl so the remote is
4200: informed
4201: redirect -> array ref of
4202: 1- seconds before redirect occurs
4203: 2- url to redirect to
4204: 3- whether the side effect should occur
4205: (side effect of setting
4206: $env{'internal.head.redirect'} to the url
4207: redirected too)
4208: domain -> force to color decorate a page for a specific
4209: domain
4210: function -> force usage of a specific rolish color scheme
4211: bgcolor -> override the default page bgcolor
4212: no_auto_mt_title
4213: -> prevent &mt()ing the title arg
4214:
4215: =back
4216:
4217: =cut
4218:
4219: sub headtag {
4220: my ($title,$head_extra,$args) = @_;
4221:
4222: my $function = $args->{'function'} || &get_users_function();
4223: my $domain = $args->{'domain'} || &determinedomain();
4224: my $bgcolor = $args->{'bgcolor'} || &designparm($function.'.pgbg',$domain);
4225: my $url = join(':',$env{'user.name'},$env{'user.domain'},
4226: $Apache::lonnet::perlvar{'lonVersion'},
4227: #time(),
4228: $env{'environment.color.timestamp'},
4229: $function,$domain,$bgcolor);
4230:
4231: $url = '/adm/css/'.&escape($url).'.css';
4232:
4233: my $result =
4234: '<head>'.
4235: &font_settings();
4236:
4237: if (!$args->{'frameset'}) {
4238: $result .= &Apache::lonhtmlcommon::htmlareaheaders();
4239: }
4240: if ($args->{'force_register'}) {
4241: $result .= &Apache::lonmenu::registerurl(1);
4242: }
4243: if (!$args->{'no_nav_bar'}
4244: && !$args->{'only_body'}
4245: && !$args->{'frameset'}) {
4246: $result .= &help_menu_js();
4247: }
4248:
4249: if (ref($args->{'redirect'})) {
4250: my ($time,$url,$inhibit_continue) = @{$args->{'redirect'}};
4251: $url = &Apache::lonenc::check_encrypt($url);
4252: if (!$inhibit_continue) {
4253: $env{'internal.head.redirect'} = $url;
4254: }
4255: $result.=<<ADDMETA
4256: <meta http-equiv="pragma" content="no-cache" />
4257: <meta http-equiv="Refresh" content="$time; url=$url" />
4258: ADDMETA
4259: }
4260: if (!defined($title)) {
4261: $title = 'The LearningOnline Network with CAPA';
4262: }
4263: if (!$args->{'no_auto_mt_title'}) { $title = &mt($title); }
4264: $result .= '<title> LON-CAPA '.$title.'</title>'
4265: .'<link rel="stylesheet" type="text/css" href="'.$url.'" />'
4266: .$head_extra;
4267: return $result;
4268: }
4269:
4270: =pod
4271:
4272: =over 4
4273:
4274: =item * &font_settings()
4275:
4276: Returns neccessary <meta> to set the proper encoding
4277:
4278: Inputs: none
4279:
4280: =back
4281:
4282: =cut
4283:
4284: sub font_settings {
4285: my $headerstring='';
4286: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
4287: $headerstring.=
4288: '<meta Content-Type="text/html; charset=x-mac-roman" />';
4289: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
4290: $headerstring.=
4291: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
4292: }
4293: return $headerstring;
4294: }
4295:
4296: =pod
4297:
4298: =over 4
4299:
4300: =item * &xml_begin()
4301:
4302: Returns the needed doctype and <html>
4303:
4304: Inputs: none
4305:
4306: =back
4307:
4308: =cut
4309:
4310: sub xml_begin {
4311: my $output='';
4312:
4313: &Apache::lonhtmlcommon::init_htmlareafields();
4314:
4315: if ($env{'browser.mathml'}) {
4316: $output='<?xml version="1.0"?>'
4317: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
4318: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
4319:
4320: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
4321: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
4322: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
4323: .'xmlns="http://www.w3.org/1999/xhtml">';
4324: } else {
4325: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
4326: }
4327: return $output;
4328: }
4329:
4330: =pod
4331:
4332: =over 4
4333:
4334: =item * &endheadtag()
4335:
4336: Returns a uniform </head> for LON-CAPA web pages.
4337:
4338: Inputs: none
4339:
4340: =back
4341:
4342: =cut
4343:
4344: sub endheadtag {
4345: return '</head>';
4346: }
4347:
4348: =pod
4349:
4350: =over 4
4351:
4352: =item * &head()
4353:
4354: Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
4355:
4356: Inputs: $title - optional title for the page
4357: $head_extra - optional extra HTML to put inside the <head>
4358:
4359: =back
4360:
4361: =cut
4362:
4363: sub head {
4364: my ($title,$head_extra,$args) = @_;
4365: return &headtag($title,$head_extra,$args).&endheadtag();
4366: }
4367:
4368: =pod
4369:
4370: =over 4
4371:
4372: =item * &start_page()
4373:
4374: Returns a complete <html> .. <body> section for LON-CAPA web pages.
4375:
4376: Inputs: $title - optional title for the page
4377: $head_extra - optional extra HTML to incude inside the <head>
4378: $args - additional optional args supported are:
4379: only_body -> is true will set &bodytag() onlybodytag
4380: arg on
4381: no_nav_bar -> is true will set &bodytag() notopbar arg on
4382: add_entries -> additional attributes to add to the <body>
4383: domain -> force to color decorate a page for a
4384: specific domain
4385: function -> force usage of a specific rolish color
4386: scheme
4387: redirect -> see &headtag()
4388: bgcolor -> override the default page bg color
4389: js_ready -> return a string ready for being used in
4390: a javascript writeln
4391: html_encode -> return a string ready for being used in
4392: a html attribute
4393: force_register -> if is true will turn on the &bodytag()
4394: $forcereg arg
4395: body_title -> alternate text to use instead of $title
4396: in the title box that appears, this text
4397: is not auto translated like the $title is
4398: frameset -> if true will start with a <frameset>
4399: rather than <body>
4400: no_title -> if true the title bar won't be shown
4401: skip_phases -> hash ref of
4402: head -> skip the <html><head> generation
4403: body -> skip all <body> generation
4404:
4405: no_inline_link -> if true and in remote mode, don't show the
4406: 'Switch To Inline Menu' link
4407:
4408: no_auto_mt_title -> prevent &mt()ing the title arg
4409:
4410: =back
4411:
4412: =cut
4413:
4414: sub start_page {
4415: my ($title,$head_extra,$args) = @_;
4416: #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
4417: my %head_args;
4418: foreach my $arg ('redirect','force_register','domain','function',
4419: 'bgcolor','frameset','no_nav_bar','only_body',
4420: 'no_auto_mt_title') {
4421: if (defined($args->{$arg})) {
4422: $head_args{$arg} = $args->{$arg};
4423: }
4424: }
4425:
4426: $env{'internal.start_page'}++;
4427: my $result;
4428: if (! exists($args->{'skip_phases'}{'head'}) ) {
4429: $result.=
4430: &xml_begin().
4431: &headtag($title,$head_extra,\%head_args).&endheadtag();
4432: }
4433:
4434: if (! exists($args->{'skip_phases'}{'body'}) ) {
4435: if ($args->{'frameset'}) {
4436: my $attr_string = &make_attr_string($args->{'force_register'},
4437: $args->{'add_entries'});
4438: $result .= "\n<frameset $attr_string>\n";
4439: } else {
4440: $result .=
4441: &bodytag($title,
4442: $args->{'function'}, $args->{'add_entries'},
4443: $args->{'only_body'}, $args->{'domain'},
4444: $args->{'force_register'}, $args->{'body_title'},
4445: $args->{'no_nav_bar'}, $args->{'bgcolor'},
4446: $args->{'no_title'}, $args->{'no_inline_link'},
4447: $args);
4448: }
4449: }
4450:
4451: if ($args->{'js_ready'}) {
4452: $result = &js_ready($result);
4453: }
4454: if ($args->{'html_encode'}) {
4455: $result = &html_encode($result);
4456: }
4457: return $result;
4458: }
4459:
4460:
4461: =pod
4462:
4463: =over 4
4464:
4465: =item * &head()
4466:
4467: Returns a complete </body></html> section for LON-CAPA web pages.
4468:
4469: Inputs: $args - additional optional args supported are:
4470: js_ready -> return a string ready for being used in
4471: a javascript writeln
4472: html_encode -> return a string ready for being used in
4473: a html attribute
4474: frameset -> if true will start with a <frameset>
4475: rather than <body>
4476: dicsussion -> if true will get discussion from
4477: lonxml::xmlend
4478: (you can pass the target and parser arguments
4479: through optional 'target' and 'parser' args
4480: to this routine)
4481:
4482: =cut
4483:
4484: sub end_page {
4485: my ($args) = @_;
4486: $env{'internal.end_page'}++;
4487: my $result;
4488: if ($args->{'discussion'}) {
4489: my ($target,$parser);
4490: if (ref($args->{'discussion'})) {
4491: ($target,$parser) =($args->{'discussion'}{'target'},
4492: $args->{'discussion'}{'parser'});
4493: }
4494: $result .= &Apache::lonxml::xmlend($target,$parser);
4495: }
4496:
4497: if ($args->{'frameset'}) {
4498: $result .= '</frameset>';
4499: } else {
4500: $result .= &endbodytag();
4501: }
4502: $result .= "\n</html>";
4503:
4504: if ($args->{'js_ready'}) {
4505: $result = &js_ready($result);
4506: }
4507:
4508: if ($args->{'html_encode'}) {
4509: $result = &html_encode($result);
4510: }
4511:
4512: return $result;
4513: }
4514:
4515: sub html_encode {
4516: my ($result) = @_;
4517:
4518: $result = &HTML::Entities::encode($result,'<>&"');
4519:
4520: return $result;
4521: }
4522: sub js_ready {
4523: my ($result) = @_;
4524:
4525: $result =~ s/[\n\r]/ /xmsg;
4526: $result =~ s/\\/\\\\/xmsg;
4527: $result =~ s/'/\\'/xmsg;
4528: $result =~ s{</}{<\\/}xmsg;
4529:
4530: return $result;
4531: }
4532:
4533: sub validate_page {
4534: if ( exists($env{'internal.start_page'})
4535: && $env{'internal.start_page'} > 1) {
4536: &Apache::lonnet::logthis('start_page called multiple times '.
4537: $env{'internal.start_page'}.' '.
4538: $ENV{'request.filename'});
4539: }
4540: if ( exists($env{'internal.end_page'})
4541: && $env{'internal.end_page'} > 1) {
4542: &Apache::lonnet::logthis('end_page called multiple times '.
4543: $env{'internal.end_page'}.' '.
4544: $env{'request.filename'});
4545: }
4546: if ( exists($env{'internal.start_page'})
4547: && ! exists($env{'internal.end_page'})) {
4548: &Apache::lonnet::logthis('start_page called without end_page '.
4549: $env{'request.filename'});
4550: }
4551: if ( ! exists($env{'internal.start_page'})
4552: && exists($env{'internal.end_page'})) {
4553: &Apache::lonnet::logthis('end_page called without start_page'.
4554: $env{'request.filename'});
4555: }
4556: }
4557:
4558: sub simple_error_page {
4559: my ($r,$title,$msg) = @_;
4560: my $page =
4561: &Apache::loncommon::start_page($title).
4562: &mt($msg).
4563: &Apache::loncommon::end_page();
4564: if (ref($r)) {
4565: $r->print($page);
4566: return;
4567: }
4568: return $page;
4569: }
4570:
4571: {
4572: my $row_count;
4573: sub start_data_table {
4574: my ($add_class) = @_;
4575: my $css_class = (join(' ','LC_data_table',$add_class));
4576: undef($row_count);
4577: return '<table class="'.$css_class.'">'."\n";
4578: }
4579:
4580: sub end_data_table {
4581: undef($row_count);
4582: return '</table>'."\n";;
4583: }
4584:
4585: sub start_data_table_row {
4586: my ($add_class) = @_;
4587: $row_count++;
4588: my $css_class = ($row_count % 2)?'':'LC_even_row';
4589: $css_class = (join(' ',$css_class,$add_class));
4590: return '<tr class="'.$css_class.'">'."\n";;
4591: }
4592:
4593: sub continue_data_table_row {
4594: my ($add_class) = @_;
4595: my $css_class = ($row_count % 2)?'':'LC_even_row';
4596: $css_class = (join(' ',$css_class,$add_class));
4597: return '<tr class="'.$css_class.'">'."\n";;
4598: }
4599:
4600: sub end_data_table_row {
4601: return '</tr>'."\n";;
4602: }
4603:
4604: sub start_data_table_empty_row {
4605: $row_count++;
4606: return '<tr class="LC_empty_row" >'."\n";;
4607: }
4608:
4609: sub end_data_table_empty_row {
4610: return '</tr>'."\n";;
4611: }
4612:
4613: sub start_data_table_header_row {
4614: return '<tr class="LC_header_row">'."\n";;
4615: }
4616:
4617: sub end_data_table_header_row {
4618: return '</tr>'."\n";;
4619: }
4620: }
4621:
4622: ###############################################
4623:
4624: =pod
4625:
4626: =item * &get_users_function()
4627:
4628: Used by &bodytag to determine the current users primary role.
4629: Returns either 'student','coordinator','admin', or 'author'.
4630:
4631: =cut
4632:
4633: ###############################################
4634: sub get_users_function {
4635: my $function = 'student';
4636: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
4637: $function='coordinator';
4638: }
4639: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
4640: $function='admin';
4641: }
4642: if (($env{'request.role'}=~/^(au|ca)/) ||
4643: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
4644: $function='author';
4645: }
4646: return $function;
4647: }
4648:
4649: ###############################################
4650:
4651: =pod
4652:
4653: =item * &check_user_status
4654:
4655: Determines current status of supplied role for a
4656: specific user. Roles can be active, previous or future.
4657:
4658: Inputs:
4659: user's domain, user's username, course's domain,
4660: course's number, optional section ID.
4661:
4662: Outputs:
4663: role status: active, previous or future.
4664:
4665: =cut
4666:
4667: sub check_user_status {
4668: my ($udom,$uname,$cdom,$crs,$role,$sec) = @_;
4669: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
4670: my @uroles = keys %userinfo;
4671: my $srchstr;
4672: my $active_chk = 'none';
4673: my $now = time;
4674: if (@uroles > 0) {
4675: if (($role eq 'cc') || ($sec eq '') || (!defined($sec))) {
4676: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
4677: } else {
4678: $srchstr = '/'.$cdom.'/'.$crs.'/'.$sec.'_'.$role;
4679: }
4680: if (grep/^\Q$srchstr\E$/,@uroles) {
4681: my $role_end = 0;
4682: my $role_start = 0;
4683: $active_chk = 'active';
4684: if ($userinfo{$srchstr} =~ m/^\Q$role\E_(\d+)/) {
4685: $role_end = $1;
4686: if ($userinfo{$srchstr} =~ m/^\Q$role\E_\Q$role_end\E_(\d+)$/) {
4687: $role_start = $1;
4688: }
4689: }
4690: if ($role_start > 0) {
4691: if ($now < $role_start) {
4692: $active_chk = 'future';
4693: }
4694: }
4695: if ($role_end > 0) {
4696: if ($now > $role_end) {
4697: $active_chk = 'previous';
4698: }
4699: }
4700: }
4701: }
4702: return $active_chk;
4703: }
4704:
4705: ###############################################
4706:
4707: =pod
4708:
4709: =item * &get_sections()
4710:
4711: Determines all the sections for a course including
4712: sections with students and sections containing other roles.
4713: Incoming parameters:
4714:
4715: 1. domain
4716: 2. course number
4717: 3. reference to array containing roles for which sections should
4718: be gathered (optional).
4719: 4. reference to array containing status types for which sections
4720: should be gathered (optional).
4721:
4722: If the third argument is undefined, sections are gathered for any role.
4723: If the fourth argument is undefined, sections are gathered for any status.
4724: Permissible values are 'active' or 'future' or 'previous'.
4725:
4726: Returns section hash (keys are section IDs, values are
4727: number of users in each section), subject to the
4728: optional roles filter, optional status filter
4729:
4730: =cut
4731:
4732: ###############################################
4733: sub get_sections {
4734: my ($cdom,$cnum,$possible_roles,$possible_status) = @_;
4735: if (!defined($cdom) || !defined($cnum)) {
4736: my $cid = $env{'request.course.id'};
4737:
4738: return if (!defined($cid));
4739:
4740: $cdom = $env{'course.'.$cid.'.domain'};
4741: $cnum = $env{'course.'.$cid.'.num'};
4742: }
4743:
4744: my %sectioncount;
4745: my $now = time;
4746:
4747: if (!defined($possible_roles) || (grep(/^st$/,@$possible_roles))) {
4748: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
4749: my $sec_index = &Apache::loncoursedata::CL_SECTION();
4750: my $status_index = &Apache::loncoursedata::CL_STATUS();
4751: my $start_index = &Apache::loncoursedata::CL_START();
4752: my $end_index = &Apache::loncoursedata::CL_END();
4753: my $status;
4754: while (my ($student,$data) = each(%$classlist)) {
4755: my ($section,$stu_status,$start,$end) = ($data->[$sec_index],
4756: $data->[$status_index],
4757: $data->[$start_index],
4758: $data->[$end_index]);
4759: if ($stu_status eq 'Active') {
4760: $status = 'active';
4761: } elsif ($end < $now) {
4762: $status = 'previous';
4763: } elsif ($start > $now) {
4764: $status = 'future';
4765: }
4766: if ($section ne '-1' && $section !~ /^\s*$/) {
4767: if ((!defined($possible_status)) || (($status ne '') &&
4768: (grep/^\Q$status\E$/,@{$possible_status}))) {
4769: $sectioncount{$section}++;
4770: }
4771: }
4772: }
4773: }
4774: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
4775: foreach my $user (sort(keys(%courseroles))) {
4776: if ($user !~ /^(\w{2})/) { next; }
4777: my ($role) = ($user =~ /^(\w{2})/);
4778: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
4779: my ($section,$status);
4780: if ($role eq 'cr' &&
4781: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
4782: $section=$1;
4783: }
4784: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
4785: if (!defined($section) || $section eq '-1') { next; }
4786: my ($end,$start) = ($courseroles{$user} =~ /^([^:]*):([^:]*)$/);
4787: if ($end == -1 && $start == -1) {
4788: next; #deleted role
4789: }
4790: if (!defined($possible_status)) {
4791: $sectioncount{$section}++;
4792: } else {
4793: if ((!$end || $end >= $now) && (!$start || $start <= $now)) {
4794: $status = 'active';
4795: } elsif ($end < $now) {
4796: $status = 'future';
4797: } elsif ($start > $now) {
4798: $status = 'previous';
4799: }
4800: if (($status ne '') && (grep/^\Q$status\E$/,@{$possible_status})) {
4801: $sectioncount{$section}++;
4802: }
4803: }
4804: }
4805: return %sectioncount;
4806: }
4807:
4808: ###############################################
4809:
4810: =pod
4811:
4812: =item * &get_course_users()
4813:
4814: Retrieves usernames:domains for users in the specified course
4815: with specific role(s), and access status.
4816:
4817: Incoming parameters:
4818: 1. course domain
4819: 2. course number
4820: 3. access status: users must have - either active,
4821: previous, future, or all.
4822: 4. reference to array of permissible roles
4823: 5. reference to array of section restrictions (optional)
4824: 6. reference to results object (hash of hashes).
4825: 7. reference to optional userdata hash
4826: Keys of top level hash are roles.
4827: Keys of inner hashes are username:domain, with
4828: values set to access type.
4829: Optional userdata hash returns an array with arguments in the
4830: same order as loncoursedata::get_classlist() for student data.
4831:
4832: Entries for end, start, section and status are blank because
4833: of the possibility of multiple values for non-student roles.
4834:
4835: =cut
4836:
4837: ###############################################
4838:
4839: sub get_course_users {
4840: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
4841: my %idx = ();
4842: my %seclists;
4843:
4844: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
4845: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
4846: $idx{end} = &Apache::loncoursedata::CL_END();
4847: $idx{start} = &Apache::loncoursedata::CL_START();
4848: $idx{id} = &Apache::loncoursedata::CL_ID();
4849: $idx{section} = &Apache::loncoursedata::CL_SECTION();
4850: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
4851: $idx{status} = &Apache::loncoursedata::CL_STATUS();
4852:
4853: if (grep(/^st$/,@{$roles})) {
4854: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
4855: my $now = time;
4856: foreach my $student (keys(%{$classlist})) {
4857: my $match = 0;
4858: my $secmatch = 0;
4859: my $section = $$classlist{$student}[$idx{section}];
4860: if ($section eq '') {
4861: $section = 'none';
4862: }
4863: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
4864: if (grep(/^all$/,@{$sections})) {
4865: $secmatch = 1;
4866: } elsif ($$classlist{$student}[$idx{section}] eq '') {
4867: if (grep(/^none$/,@{$sections})) {
4868: $secmatch = 1;
4869: }
4870: } else {
4871: if (grep(/^\Q$section\E$/,@{$sections})) {
4872: $secmatch = 1;
4873: }
4874: }
4875: if (!$secmatch) {
4876: next;
4877: }
4878: }
4879: push(@{$seclists{$student}},$section);
4880: if (defined($$types{'active'})) {
4881: if ($$classlist{$student}[$idx{status}] eq 'Active') {
4882: push(@{$$users{st}{$student}},'active');
4883: $match = 1;
4884: }
4885: }
4886: if (defined($$types{'previous'})) {
4887: if ($$classlist{$student}[$idx{end}] <= $now) {
4888: push(@{$$users{st}{$student}},'previous');
4889: $match = 1;
4890: }
4891: }
4892: if (defined($$types{'future'})) {
4893: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
4894: push(@{$$users{st}{$student}},'future');
4895: $match = 1;
4896: }
4897: }
4898: if ($match && ref($userdata) eq 'HASH') {
4899: $$userdata{$student} = $$classlist{$student};
4900: }
4901: }
4902: }
4903: if ((@{$roles} > 1) || ((@{$roles} == 1) && ($$roles[0] ne "st"))) {
4904: my %coursepersonnel = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
4905: my $now = time;
4906: foreach my $person (sort(keys(%coursepersonnel))) {
4907: my $match = 0;
4908: my $secmatch = 0;
4909: my $status;
4910: my ($role,$user,$usec) = ($person =~ /^([^:]*):([^:]+:[^:]+):([^:]*)/);
4911: $user =~ s/:$//;
4912: my ($end,$start) = split(/:/,$coursepersonnel{$person});
4913: if ($end == -1 || $start == -1) {
4914: next;
4915: }
4916: if (($role) && ((grep(/^\Q$role\E$/,@{$roles})) ||
4917: (grep(/^cr$/,@{$roles}) && $role =~ /^cr\//))) {
4918: my ($uname,$udom) = split(/:/,$user);
4919: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
4920: if (grep(/^all$/,@{$sections})) {
4921: $secmatch = 1;
4922: } elsif ($usec eq '') {
4923: if (grep(/^none$/,@{$sections})) {
4924: $secmatch = 1;
4925: }
4926: } else {
4927: if (grep(/^\Q$usec\E$/,@{$sections})) {
4928: $secmatch = 1;
4929: }
4930: }
4931: if (!$secmatch) {
4932: next;
4933: }
4934: }
4935: if ($usec eq '') {
4936: $usec = 'none';
4937: }
4938: if ($uname ne '' && $udom ne '') {
4939: if ($end < $now) {
4940: $status = 'previous';
4941: } elsif ($start > $now) {
4942: $status = 'future';
4943: } else {
4944: $status = 'active';
4945: }
4946: foreach my $type (keys(%{$types})) {
4947: if ($status eq $type) {
4948: if (!grep(/^\Q$type\E$/,@{$$users{$role}{$user}})) {
4949: push(@{$$users{$role}{$user}},$type);
4950: }
4951: $match = 1;
4952: }
4953: }
4954: if (($match) && (ref($userdata) eq 'HASH')) {
4955: if (!exists($$userdata{$uname.':'.$udom})) {
4956: &get_user_info($udom,$uname,\%idx,$userdata);
4957: }
4958: if (!grep(/^\Q$usec\E$/,@{$seclists{$uname.':'.$udom}})) {
4959: push(@{$seclists{$uname.':'.$udom}},$usec);
4960: }
4961: }
4962: }
4963: }
4964: }
4965: if (grep(/^ow$/,@{$roles})) {
4966: if ((defined($cdom)) && (defined($cnum))) {
4967: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
4968: if ( defined($csettings{'internal.courseowner'}) ) {
4969: my $owner = $csettings{'internal.courseowner'};
4970: if ($owner !~ /^[^:]+:[^:]+$/) {
4971: $owner = $owner.':'.$cdom;
4972: }
4973: @{$$users{'ow'}{$owner}} = 'any';
4974: if (defined($userdata) &&
4975: !exists($$userdata{$owner.':'.$cdom})) {
4976: &get_user_info($cdom,$owner,\%idx,$userdata);
4977: if (!grep(/^none$/,@{$seclists{$owner.':'.$cdom}})) {
4978: push(@{$seclists{$owner.':'.$cdom}},'none');
4979: }
4980: }
4981: }
4982: }
4983: }
4984: foreach my $user (keys(%seclists)) {
4985: @{$seclists{$user}} = (sort {$a <=> $b} @{$seclists{$user}});
4986: $$userdata{$user}[$idx{section}] = join(',',@{$seclists{$user}});
4987: }
4988: }
4989: return;
4990: }
4991:
4992: sub get_user_info {
4993: my ($udom,$uname,$idx,$userdata) = @_;
4994: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
4995: &plainname($uname,$udom,'lastname');
4996: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
4997: $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
4998: return;
4999: }
5000:
5001: ###############################################
5002:
5003: =pod
5004:
5005: =item * &get_user_quota()
5006:
5007: Retrieves quota assigned for storage of portfolio files for a user
5008:
5009: Incoming parameters:
5010: 1. user's username
5011: 2. user's domain
5012:
5013: Returns:
5014: 1. Disk quota (in Mb) assigned to student.
5015:
5016: If a value has been stored in the user's environment,
5017: it will return that, otherwise it returns the default
5018: for users in the domain.
5019:
5020: =cut
5021:
5022: ###############################################
5023:
5024:
5025: sub get_user_quota {
5026: my ($uname,$udom) = @_;
5027: my $quota;
5028: if (!defined($udom)) {
5029: $udom = $env{'user.domain'};
5030: }
5031: if (!defined($uname)) {
5032: $uname = $env{'user.name'};
5033: }
5034: if (($udom eq '' || $uname eq '') ||
5035: ($udom eq 'public') && ($uname eq 'public')) {
5036: $quota = 0;
5037: } else {
5038: if ($udom eq $env{'user.domain'} && $uname eq $env{'user.name'}) {
5039: $quota = $env{'environment.portfolioquota'};
5040: } else {
5041: my %userenv = &Apache::lonnet::dump('environment',$udom,$uname);
5042: my ($tmp) = keys(%userenv);
5043: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
5044: $quota = $userenv{'portfolioquota'};
5045: } else {
5046: undef(%userenv);
5047: }
5048: }
5049: if ($quota eq '') {
5050: $quota = &default_quota($udom);
5051: }
5052: }
5053: return $quota;
5054: }
5055:
5056: ###############################################
5057:
5058: =pod
5059:
5060: =item * &default_quota()
5061:
5062: Retrieves default quota assigned for storage of user portfolio files
5063:
5064: Incoming parameters:
5065: 1. domain
5066:
5067: Returns:
5068: 1. Default disk quota (in Mb) for user portfolios in the domain.
5069:
5070: If a value has been stored in the domain's configuration db,
5071: it will return that, otherwise it returns 20 (for backwards
5072: compatibility with domains which have not set up a configuration
5073: db file; the original statically defined portfolio quota was 20 Mb).
5074:
5075: =cut
5076:
5077: ###############################################
5078:
5079:
5080: sub default_quota {
5081: my ($udom) = @_;
5082: my %defaults = &Apache::lonnet::get_dom('configuration',
5083: ['portfolioquota'],$udom);
5084: if ($defaults{'portfolioquota'} ne '') {
5085: return $defaults{'portfolioquota'};
5086: } else {
5087: return '20';
5088: }
5089: }
5090:
5091: sub get_secgrprole_info {
5092: my ($cdom,$cnum,$needroles,$type) = @_;
5093: my %sections_count = &get_sections($cdom,$cnum);
5094: my @sections = (sort {$a <=> $b} keys(%sections_count));
5095: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
5096: my @groups = sort(keys(%curr_groups));
5097: my $allroles = [];
5098: my $rolehash;
5099: my $accesshash = {
5100: active => 'Currently has access',
5101: future => 'Will have future access',
5102: previous => 'Previously had access',
5103: };
5104: if ($needroles) {
5105: $rolehash = {'all' => 'all'};
5106: my %user_roles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
5107: if (&Apache::lonnet::error(%user_roles)) {
5108: undef(%user_roles);
5109: }
5110: foreach my $item (keys(%user_roles)) {
5111: my ($role)=split(/\:/,$item,2);
5112: if ($role eq 'cr') { next; }
5113: if ($role =~ /^cr/) {
5114: $$rolehash{$role} = (split('/',$role))[3];
5115: } else {
5116: $$rolehash{$role} = &Apache::lonnet::plaintext($role,$type);
5117: }
5118: }
5119: foreach my $key (sort(keys(%{$rolehash}))) {
5120: push(@{$allroles},$key);
5121: }
5122: push (@{$allroles},'st');
5123: $$rolehash{'st'} = &Apache::lonnet::plaintext('st',$type);
5124: }
5125: return (\@sections,\@groups,$allroles,$rolehash,$accesshash);
5126: }
5127:
5128: =pod
5129:
5130: =item * get_unprocessed_cgi($query,$possible_names)
5131:
5132: Modify the %env hash to contain unprocessed CGI form parameters held in
5133: $query. The parameters listed in $possible_names (an array reference),
5134: will be set in $env{'form.name'} if they do not already exist.
5135:
5136: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
5137: $possible_names is an ref to an array of form element names. As an example:
5138: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
5139: will result in $env{'form.uname'} and $env{'form.udom'} being set.
5140:
5141: =cut
5142:
5143: sub get_unprocessed_cgi {
5144: my ($query,$possible_names)= @_;
5145: # $Apache::lonxml::debug=1;
5146: foreach my $pair (split(/&/,$query)) {
5147: my ($name, $value) = split(/=/,$pair);
5148: $name = &unescape($name);
5149: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
5150: $value =~ tr/+/ /;
5151: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
5152: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
5153: }
5154: }
5155: }
5156:
5157: =pod
5158:
5159: =item * cacheheader()
5160:
5161: returns cache-controlling header code
5162:
5163: =cut
5164:
5165: sub cacheheader {
5166: unless ($env{'request.method'} eq 'GET') { return ''; }
5167: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
5168: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
5169: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
5170: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
5171: return $output;
5172: }
5173:
5174: =pod
5175:
5176: =item * no_cache($r)
5177:
5178: specifies header code to not have cache
5179:
5180: =cut
5181:
5182: sub no_cache {
5183: my ($r) = @_;
5184: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
5185: $env{'request.method'} ne 'GET') { return ''; }
5186: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
5187: $r->no_cache(1);
5188: $r->header_out("Expires" => $date);
5189: $r->header_out("Pragma" => "no-cache");
5190: }
5191:
5192: sub content_type {
5193: my ($r,$type,$charset) = @_;
5194: if ($r) {
5195: # Note that printout.pl calls this with undef for $r.
5196: &no_cache($r);
5197: }
5198: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
5199: unless ($charset) {
5200: $charset=&Apache::lonlocal::current_encoding;
5201: }
5202: if ($charset) { $type.='; charset='.$charset; }
5203: if ($r) {
5204: $r->content_type($type);
5205: } else {
5206: print("Content-type: $type\n\n");
5207: }
5208: }
5209:
5210: =pod
5211:
5212: =item * add_to_env($name,$value)
5213:
5214: adds $name to the %env hash with value
5215: $value, if $name already exists, the entry is converted to an array
5216: reference and $value is added to the array.
5217:
5218: =cut
5219:
5220: sub add_to_env {
5221: my ($name,$value)=@_;
5222: if (defined($env{$name})) {
5223: if (ref($env{$name})) {
5224: #already have multiple values
5225: push(@{ $env{$name} },$value);
5226: } else {
5227: #first time seeing multiple values, convert hash entry to an arrayref
5228: my $first=$env{$name};
5229: undef($env{$name});
5230: push(@{ $env{$name} },$first,$value);
5231: }
5232: } else {
5233: $env{$name}=$value;
5234: }
5235: }
5236:
5237: =pod
5238:
5239: =item * get_env_multiple($name)
5240:
5241: gets $name from the %env hash, it seemlessly handles the cases where multiple
5242: values may be defined and end up as an array ref.
5243:
5244: returns an array of values
5245:
5246: =cut
5247:
5248: sub get_env_multiple {
5249: my ($name) = @_;
5250: my @values;
5251: if (defined($env{$name})) {
5252: # exists is it an array
5253: if (ref($env{$name})) {
5254: @values=@{ $env{$name} };
5255: } else {
5256: $values[0]=$env{$name};
5257: }
5258: }
5259: return(@values);
5260: }
5261:
5262:
5263: =pod
5264:
5265: =back
5266:
5267: =head1 CSV Upload/Handling functions
5268:
5269: =over 4
5270:
5271: =item * upfile_store($r)
5272:
5273: Store uploaded file, $r should be the HTTP Request object,
5274: needs $env{'form.upfile'}
5275: returns $datatoken to be put into hidden field
5276:
5277: =cut
5278:
5279: sub upfile_store {
5280: my $r=shift;
5281: $env{'form.upfile'}=~s/\r/\n/gs;
5282: $env{'form.upfile'}=~s/\f/\n/gs;
5283: $env{'form.upfile'}=~s/\n+/\n/gs;
5284: $env{'form.upfile'}=~s/\n+$//gs;
5285:
5286: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
5287: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
5288: {
5289: my $datafile = $r->dir_config('lonDaemons').
5290: '/tmp/'.$datatoken.'.tmp';
5291: if ( open(my $fh,">$datafile") ) {
5292: print $fh $env{'form.upfile'};
5293: close($fh);
5294: }
5295: }
5296: return $datatoken;
5297: }
5298:
5299: =pod
5300:
5301: =item * load_tmp_file($r)
5302:
5303: Load uploaded file from tmp, $r should be the HTTP Request object,
5304: needs $env{'form.datatoken'},
5305: sets $env{'form.upfile'} to the contents of the file
5306:
5307: =cut
5308:
5309: sub load_tmp_file {
5310: my $r=shift;
5311: my @studentdata=();
5312: {
5313: my $studentfile = $r->dir_config('lonDaemons').
5314: '/tmp/'.$env{'form.datatoken'}.'.tmp';
5315: if ( open(my $fh,"<$studentfile") ) {
5316: @studentdata=<$fh>;
5317: close($fh);
5318: }
5319: }
5320: $env{'form.upfile'}=join('',@studentdata);
5321: }
5322:
5323: =pod
5324:
5325: =item * upfile_record_sep()
5326:
5327: Separate uploaded file into records
5328: returns array of records,
5329: needs $env{'form.upfile'} and $env{'form.upfiletype'}
5330:
5331: =cut
5332:
5333: sub upfile_record_sep {
5334: if ($env{'form.upfiletype'} eq 'xml') {
5335: } else {
5336: my @records;
5337: foreach my $line (split(/\n/,$env{'form.upfile'})) {
5338: if ($line=~/^\s*$/) { next; }
5339: push(@records,$line);
5340: }
5341: return @records;
5342: }
5343: }
5344:
5345: =pod
5346:
5347: =item * record_sep($record)
5348:
5349: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
5350:
5351: =cut
5352:
5353: sub takeleft {
5354: my $index=shift;
5355: return substr('0000'.$index,-4,4);
5356: }
5357:
5358: sub record_sep {
5359: my $record=shift;
5360: my %components=();
5361: if ($env{'form.upfiletype'} eq 'xml') {
5362: } elsif ($env{'form.upfiletype'} eq 'space') {
5363: my $i=0;
5364: foreach my $field (split(/\s+/,$record)) {
5365: $field=~s/^(\"|\')//;
5366: $field=~s/(\"|\')$//;
5367: $components{&takeleft($i)}=$field;
5368: $i++;
5369: }
5370: } elsif ($env{'form.upfiletype'} eq 'tab') {
5371: my $i=0;
5372: foreach my $field (split(/\t/,$record)) {
5373: $field=~s/^(\"|\')//;
5374: $field=~s/(\"|\')$//;
5375: $components{&takeleft($i)}=$field;
5376: $i++;
5377: }
5378: } else {
5379: my @allfields;
5380: if ($env{'form.upfiletype'} eq 'semisv') {
5381: @allfields=split(/;/,$record);
5382: } else {
5383: @allfields=split(/\,/,$record);
5384: }
5385: my $i=0;
5386: my $j;
5387: for ($j=0;$j<=$#allfields;$j++) {
5388: my $field=$allfields[$j];
5389: if ($field=~/^\s*(\"|\')/) {
5390: my $delimiter=$1;
5391: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
5392: $j++;
5393: $field.=','.$allfields[$j];
5394: }
5395: $field=~s/^\s*$delimiter//;
5396: $field=~s/$delimiter\s*$//;
5397: }
5398: $components{&takeleft($i)}=$field;
5399: $i++;
5400: }
5401: }
5402: return %components;
5403: }
5404:
5405: ######################################################
5406: ######################################################
5407:
5408: =pod
5409:
5410: =item * upfile_select_html()
5411:
5412: Return HTML code to select a file from the users machine and specify
5413: the file type.
5414:
5415: =cut
5416:
5417: ######################################################
5418: ######################################################
5419: sub upfile_select_html {
5420: my %Types = (
5421: csv => &mt('CSV (comma separated values, spreadsheet)'),
5422: semisv => &mt('Semicolon separated values'),
5423: space => &mt('Space separated'),
5424: tab => &mt('Tabulator separated'),
5425: # xml => &mt('HTML/XML'),
5426: );
5427: my $Str = '<input type="file" name="upfile" size="50" />'.
5428: '<br />Type: <select name="upfiletype">';
5429: foreach my $type (sort(keys(%Types))) {
5430: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
5431: }
5432: $Str .= "</select>\n";
5433: return $Str;
5434: }
5435:
5436: sub get_samples {
5437: my ($records,$toget) = @_;
5438: my @samples=({});
5439: my $got=0;
5440: foreach my $rec (@$records) {
5441: my %temp = &record_sep($rec);
5442: if (! grep(/\S/, values(%temp))) { next; }
5443: if (%temp) {
5444: $samples[$got]=\%temp;
5445: $got++;
5446: if ($got == $toget) { last; }
5447: }
5448: }
5449: return \@samples;
5450: }
5451:
5452: ######################################################
5453: ######################################################
5454:
5455: =pod
5456:
5457: =item * csv_print_samples($r,$records)
5458:
5459: Prints a table of sample values from each column uploaded $r is an
5460: Apache Request ref, $records is an arrayref from
5461: &Apache::loncommon::upfile_record_sep
5462:
5463: =cut
5464:
5465: ######################################################
5466: ######################################################
5467: sub csv_print_samples {
5468: my ($r,$records) = @_;
5469: my $samples = &get_samples($records,3);
5470:
5471: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
5472: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
5473: $r->print('<th>'.&mt('Column [_1]',($sample+1)).'</th>'); }
5474: $r->print('</tr>');
5475: foreach my $hash (@$samples) {
5476: $r->print('<tr>');
5477: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
5478: $r->print('<td>');
5479: if (defined($$hash{$sample})) { $r->print($$hash{$sample}); }
5480: $r->print('</td>');
5481: }
5482: $r->print('</tr>');
5483: }
5484: $r->print('</tr></table><br />'."\n");
5485: }
5486:
5487: ######################################################
5488: ######################################################
5489:
5490: =pod
5491:
5492: =item * csv_print_select_table($r,$records,$d)
5493:
5494: Prints a table to create associations between values and table columns.
5495:
5496: $r is an Apache Request ref,
5497: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
5498: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
5499:
5500: =cut
5501:
5502: ######################################################
5503: ######################################################
5504: sub csv_print_select_table {
5505: my ($r,$records,$d) = @_;
5506: my $i=0;
5507: my $samples = &get_samples($records,1);
5508: $r->print(&mt('Associate columns with student attributes.')."\n".
5509: '<table border="2"><tr>'.
5510: '<th>'.&mt('Attribute').'</th>'.
5511: '<th>'.&mt('Column').'</th></tr>'."\n");
5512: foreach my $array_ref (@$d) {
5513: my ($value,$display,$defaultcol)=@{ $array_ref };
5514: $r->print('<tr><td>'.$display.'</td>');
5515:
5516: $r->print('<td><select name=f'.$i.
5517: ' onchange="javascript:flip(this.form,'.$i.');">');
5518: $r->print('<option value="none"></option>');
5519: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
5520: $r->print('<option value="'.$sample.'"'.
5521: ($sample eq $defaultcol ? ' selected="selected" ' : '').
5522: '>Column '.($sample+1).'</option>');
5523: }
5524: $r->print('</select></td></tr>'."\n");
5525: $i++;
5526: }
5527: $i--;
5528: return $i;
5529: }
5530:
5531: ######################################################
5532: ######################################################
5533:
5534: =pod
5535:
5536: =item * csv_samples_select_table($r,$records,$d)
5537:
5538: Prints a table of sample values from the upload and can make associate samples to internal names.
5539:
5540: $r is an Apache Request ref,
5541: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
5542: $d is an array of 2 element arrays (internal name, displayed name)
5543:
5544: =cut
5545:
5546: ######################################################
5547: ######################################################
5548: sub csv_samples_select_table {
5549: my ($r,$records,$d) = @_;
5550: my $i=0;
5551: #
5552: my $samples = &get_samples($records,3);
5553: $r->print('<table border=2><tr><th>'.
5554: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
5555:
5556: foreach my $key (sort(keys(%{ $samples->[0] }))) {
5557: $r->print('<tr><td><select name="f'.$i.'"'.
5558: ' onchange="javascript:flip(this.form,'.$i.');">');
5559: foreach my $option (@$d) {
5560: my ($value,$display,$defaultcol)=@{ $option };
5561: $r->print('<option value="'.$value.'"'.
5562: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
5563: $display.'</option>');
5564: }
5565: $r->print('</select></td><td>');
5566: foreach my $line (0..2) {
5567: if (defined($samples->[$line]{$key})) {
5568: $r->print($samples->[$line]{$key}."<br />\n");
5569: }
5570: }
5571: $r->print('</td></tr>');
5572: $i++;
5573: }
5574: $i--;
5575: return($i);
5576: }
5577:
5578: ######################################################
5579: ######################################################
5580:
5581: =pod
5582:
5583: =item clean_excel_name($name)
5584:
5585: Returns a replacement for $name which does not contain any illegal characters.
5586:
5587: =cut
5588:
5589: ######################################################
5590: ######################################################
5591: sub clean_excel_name {
5592: my ($name) = @_;
5593: $name =~ s/[:\*\?\/\\]//g;
5594: if (length($name) > 31) {
5595: $name = substr($name,0,31);
5596: }
5597: return $name;
5598: }
5599:
5600: =pod
5601:
5602: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
5603:
5604: Returns either 1 or undef
5605:
5606: 1 if the part is to be hidden, undef if it is to be shown
5607:
5608: Arguments are:
5609:
5610: $id the id of the part to be checked
5611: $symb, optional the symb of the resource to check
5612: $udom, optional the domain of the user to check for
5613: $uname, optional the username of the user to check for
5614:
5615: =cut
5616:
5617: sub check_if_partid_hidden {
5618: my ($id,$symb,$udom,$uname) = @_;
5619: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
5620: $symb,$udom,$uname);
5621: my $truth=1;
5622: #if the string starts with !, then the list is the list to show not hide
5623: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
5624: my @hiddenlist=split(/,/,$hiddenparts);
5625: foreach my $checkid (@hiddenlist) {
5626: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
5627: }
5628: return !$truth;
5629: }
5630:
5631:
5632: ############################################################
5633: ############################################################
5634:
5635: =pod
5636:
5637: =back
5638:
5639: =head1 cgi-bin script and graphing routines
5640:
5641: =over 4
5642:
5643: =item get_cgi_id
5644:
5645: Inputs: none
5646:
5647: Returns an id which can be used to pass environment variables
5648: to various cgi-bin scripts. These environment variables will
5649: be removed from the users environment after a given time by
5650: the routine &Apache::lonnet::transfer_profile_to_env.
5651:
5652: =cut
5653:
5654: ############################################################
5655: ############################################################
5656: my $uniq=0;
5657: sub get_cgi_id {
5658: $uniq=($uniq+1)%100000;
5659: return (time.'_'.$$.'_'.$uniq);
5660: }
5661:
5662: ############################################################
5663: ############################################################
5664:
5665: =pod
5666:
5667: =item DrawBarGraph
5668:
5669: Facilitates the plotting of data in a (stacked) bar graph.
5670: Puts plot definition data into the users environment in order for
5671: graph.png to plot it. Returns an <img> tag for the plot.
5672: The bars on the plot are labeled '1','2',...,'n'.
5673:
5674: Inputs:
5675:
5676: =over 4
5677:
5678: =item $Title: string, the title of the plot
5679:
5680: =item $xlabel: string, text describing the X-axis of the plot
5681:
5682: =item $ylabel: string, text describing the Y-axis of the plot
5683:
5684: =item $Max: scalar, the maximum Y value to use in the plot
5685: If $Max is < any data point, the graph will not be rendered.
5686:
5687: =item $colors: array ref holding the colors to be used for the data sets when
5688: they are plotted. If undefined, default values will be used.
5689:
5690: =item $labels: array ref holding the labels to use on the x-axis for the bars.
5691:
5692: =item @Values: An array of array references. Each array reference holds data
5693: to be plotted in a stacked bar chart.
5694:
5695: =item If the final element of @Values is a hash reference the key/value
5696: pairs will be added to the graph definition.
5697:
5698: =back
5699:
5700: Returns:
5701:
5702: An <img> tag which references graph.png and the appropriate identifying
5703: information for the plot.
5704:
5705: =cut
5706:
5707: ############################################################
5708: ############################################################
5709: sub DrawBarGraph {
5710: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
5711: #
5712: if (! defined($colors)) {
5713: $colors = ['#33ff00',
5714: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
5715: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
5716: ];
5717: }
5718: my $extra_settings = {};
5719: if (ref($Values[-1]) eq 'HASH') {
5720: $extra_settings = pop(@Values);
5721: }
5722: #
5723: my $identifier = &get_cgi_id();
5724: my $id = 'cgi.'.$identifier;
5725: if (! @Values || ref($Values[0]) ne 'ARRAY') {
5726: return '';
5727: }
5728: #
5729: my @Labels;
5730: if (defined($labels)) {
5731: @Labels = @$labels;
5732: } else {
5733: for (my $i=0;$i<@{$Values[0]};$i++) {
5734: push (@Labels,$i+1);
5735: }
5736: }
5737: #
5738: my $NumBars = scalar(@{$Values[0]});
5739: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
5740: my %ValuesHash;
5741: my $NumSets=1;
5742: foreach my $array (@Values) {
5743: next if (! ref($array));
5744: $ValuesHash{$id.'.data.'.$NumSets++} =
5745: join(',',@$array);
5746: }
5747: #
5748: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
5749: if ($NumBars < 3) {
5750: $width = 120+$NumBars*32;
5751: $xskip = 1;
5752: $bar_width = 30;
5753: } elsif ($NumBars < 5) {
5754: $width = 120+$NumBars*20;
5755: $xskip = 1;
5756: $bar_width = 20;
5757: } elsif ($NumBars < 10) {
5758: $width = 120+$NumBars*15;
5759: $xskip = 1;
5760: $bar_width = 15;
5761: } elsif ($NumBars <= 25) {
5762: $width = 120+$NumBars*11;
5763: $xskip = 5;
5764: $bar_width = 8;
5765: } elsif ($NumBars <= 50) {
5766: $width = 120+$NumBars*8;
5767: $xskip = 5;
5768: $bar_width = 4;
5769: } else {
5770: $width = 120+$NumBars*8;
5771: $xskip = 5;
5772: $bar_width = 4;
5773: }
5774: #
5775: $Max = 1 if ($Max < 1);
5776: if ( int($Max) < $Max ) {
5777: $Max++;
5778: $Max = int($Max);
5779: }
5780: $Title = '' if (! defined($Title));
5781: $xlabel = '' if (! defined($xlabel));
5782: $ylabel = '' if (! defined($ylabel));
5783: $ValuesHash{$id.'.title'} = &escape($Title);
5784: $ValuesHash{$id.'.xlabel'} = &escape($xlabel);
5785: $ValuesHash{$id.'.ylabel'} = &escape($ylabel);
5786: $ValuesHash{$id.'.y_max_value'} = $Max;
5787: $ValuesHash{$id.'.NumBars'} = $NumBars;
5788: $ValuesHash{$id.'.NumSets'} = $NumSets;
5789: $ValuesHash{$id.'.PlotType'} = 'bar';
5790: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
5791: $ValuesHash{$id.'.height'} = $height;
5792: $ValuesHash{$id.'.width'} = $width;
5793: $ValuesHash{$id.'.xskip'} = $xskip;
5794: $ValuesHash{$id.'.bar_width'} = $bar_width;
5795: $ValuesHash{$id.'.labels'} = join(',',@Labels);
5796: #
5797: # Deal with other parameters
5798: while (my ($key,$value) = each(%$extra_settings)) {
5799: $ValuesHash{$id.'.'.$key} = $value;
5800: }
5801: #
5802: &Apache::lonnet::appenv(%ValuesHash);
5803: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
5804: }
5805:
5806: ############################################################
5807: ############################################################
5808:
5809: =pod
5810:
5811: =item DrawXYGraph
5812:
5813: Facilitates the plotting of data in an XY graph.
5814: Puts plot definition data into the users environment in order for
5815: graph.png to plot it. Returns an <img> tag for the plot.
5816:
5817: Inputs:
5818:
5819: =over 4
5820:
5821: =item $Title: string, the title of the plot
5822:
5823: =item $xlabel: string, text describing the X-axis of the plot
5824:
5825: =item $ylabel: string, text describing the Y-axis of the plot
5826:
5827: =item $Max: scalar, the maximum Y value to use in the plot
5828: If $Max is < any data point, the graph will not be rendered.
5829:
5830: =item $colors: Array ref containing the hex color codes for the data to be
5831: plotted in. If undefined, default values will be used.
5832:
5833: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
5834:
5835: =item $Ydata: Array ref containing Array refs.
5836: Each of the contained arrays will be plotted as a separate curve.
5837:
5838: =item %Values: hash indicating or overriding any default values which are
5839: passed to graph.png.
5840: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
5841:
5842: =back
5843:
5844: Returns:
5845:
5846: An <img> tag which references graph.png and the appropriate identifying
5847: information for the plot.
5848:
5849: =cut
5850:
5851: ############################################################
5852: ############################################################
5853: sub DrawXYGraph {
5854: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
5855: #
5856: # Create the identifier for the graph
5857: my $identifier = &get_cgi_id();
5858: my $id = 'cgi.'.$identifier;
5859: #
5860: $Title = '' if (! defined($Title));
5861: $xlabel = '' if (! defined($xlabel));
5862: $ylabel = '' if (! defined($ylabel));
5863: my %ValuesHash =
5864: (
5865: $id.'.title' => &escape($Title),
5866: $id.'.xlabel' => &escape($xlabel),
5867: $id.'.ylabel' => &escape($ylabel),
5868: $id.'.y_max_value'=> $Max,
5869: $id.'.labels' => join(',',@$Xlabels),
5870: $id.'.PlotType' => 'XY',
5871: );
5872: #
5873: if (defined($colors) && ref($colors) eq 'ARRAY') {
5874: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
5875: }
5876: #
5877: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
5878: return '';
5879: }
5880: my $NumSets=1;
5881: foreach my $array (@{$Ydata}){
5882: next if (! ref($array));
5883: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
5884: }
5885: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
5886: #
5887: # Deal with other parameters
5888: while (my ($key,$value) = each(%Values)) {
5889: $ValuesHash{$id.'.'.$key} = $value;
5890: }
5891: #
5892: &Apache::lonnet::appenv(%ValuesHash);
5893: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
5894: }
5895:
5896: ############################################################
5897: ############################################################
5898:
5899: =pod
5900:
5901: =item DrawXYYGraph
5902:
5903: Facilitates the plotting of data in an XY graph with two Y axes.
5904: Puts plot definition data into the users environment in order for
5905: graph.png to plot it. Returns an <img> tag for the plot.
5906:
5907: Inputs:
5908:
5909: =over 4
5910:
5911: =item $Title: string, the title of the plot
5912:
5913: =item $xlabel: string, text describing the X-axis of the plot
5914:
5915: =item $ylabel: string, text describing the Y-axis of the plot
5916:
5917: =item $colors: Array ref containing the hex color codes for the data to be
5918: plotted in. If undefined, default values will be used.
5919:
5920: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
5921:
5922: =item $Ydata1: The first data set
5923:
5924: =item $Min1: The minimum value of the left Y-axis
5925:
5926: =item $Max1: The maximum value of the left Y-axis
5927:
5928: =item $Ydata2: The second data set
5929:
5930: =item $Min2: The minimum value of the right Y-axis
5931:
5932: =item $Max2: The maximum value of the left Y-axis
5933:
5934: =item %Values: hash indicating or overriding any default values which are
5935: passed to graph.png.
5936: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
5937:
5938: =back
5939:
5940: Returns:
5941:
5942: An <img> tag which references graph.png and the appropriate identifying
5943: information for the plot.
5944:
5945: =cut
5946:
5947: ############################################################
5948: ############################################################
5949: sub DrawXYYGraph {
5950: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
5951: $Ydata2,$Min2,$Max2,%Values)=@_;
5952: #
5953: # Create the identifier for the graph
5954: my $identifier = &get_cgi_id();
5955: my $id = 'cgi.'.$identifier;
5956: #
5957: $Title = '' if (! defined($Title));
5958: $xlabel = '' if (! defined($xlabel));
5959: $ylabel = '' if (! defined($ylabel));
5960: my %ValuesHash =
5961: (
5962: $id.'.title' => &escape($Title),
5963: $id.'.xlabel' => &escape($xlabel),
5964: $id.'.ylabel' => &escape($ylabel),
5965: $id.'.labels' => join(',',@$Xlabels),
5966: $id.'.PlotType' => 'XY',
5967: $id.'.NumSets' => 2,
5968: $id.'.two_axes' => 1,
5969: $id.'.y1_max_value' => $Max1,
5970: $id.'.y1_min_value' => $Min1,
5971: $id.'.y2_max_value' => $Max2,
5972: $id.'.y2_min_value' => $Min2,
5973: );
5974: #
5975: if (defined($colors) && ref($colors) eq 'ARRAY') {
5976: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
5977: }
5978: #
5979: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
5980: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
5981: return '';
5982: }
5983: my $NumSets=1;
5984: foreach my $array ($Ydata1,$Ydata2){
5985: next if (! ref($array));
5986: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
5987: }
5988: #
5989: # Deal with other parameters
5990: while (my ($key,$value) = each(%Values)) {
5991: $ValuesHash{$id.'.'.$key} = $value;
5992: }
5993: #
5994: &Apache::lonnet::appenv(%ValuesHash);
5995: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
5996: }
5997:
5998: ############################################################
5999: ############################################################
6000:
6001: =pod
6002:
6003: =back
6004:
6005: =head1 Statistics helper routines?
6006:
6007: Bad place for them but what the hell.
6008:
6009: =over 4
6010:
6011: =item &chartlink
6012:
6013: Returns a link to the chart for a specific student.
6014:
6015: Inputs:
6016:
6017: =over 4
6018:
6019: =item $linktext: The text of the link
6020:
6021: =item $sname: The students username
6022:
6023: =item $sdomain: The students domain
6024:
6025: =back
6026:
6027: =back
6028:
6029: =cut
6030:
6031: ############################################################
6032: ############################################################
6033: sub chartlink {
6034: my ($linktext, $sname, $sdomain) = @_;
6035: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
6036: '&SelectedStudent='.&escape($sname.':'.$sdomain).
6037: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
6038: '">'.$linktext.'</a>';
6039: }
6040:
6041: #######################################################
6042: #######################################################
6043:
6044: =pod
6045:
6046: =head1 Course Environment Routines
6047:
6048: =over 4
6049:
6050: =item &restore_course_settings
6051:
6052: =item &store_course_settings
6053:
6054: Restores/Store indicated form parameters from the course environment.
6055: Will not overwrite existing values of the form parameters.
6056:
6057: Inputs:
6058: a scalar describing the data (e.g. 'chart', 'problem_analysis')
6059:
6060: a hash ref describing the data to be stored. For example:
6061:
6062: %Save_Parameters = ('Status' => 'scalar',
6063: 'chartoutputmode' => 'scalar',
6064: 'chartoutputdata' => 'scalar',
6065: 'Section' => 'array',
6066: 'Group' => 'array',
6067: 'StudentData' => 'array',
6068: 'Maps' => 'array');
6069:
6070: Returns: both routines return nothing
6071:
6072: =cut
6073:
6074: #######################################################
6075: #######################################################
6076: sub store_course_settings {
6077: # save to the environment
6078: # appenv the same items, just to be safe
6079: my $courseid = $env{'request.course.id'};
6080: my $udom = $env{'user.domain'};
6081: my $uname = $env{'user.name'};
6082: my ($prefix,$Settings) = @_;
6083: my %SaveHash;
6084: my %AppHash;
6085: while (my ($setting,$type) = each(%$Settings)) {
6086: my $basename = join('.','internal',$courseid,$prefix,$setting);
6087: my $envname = 'environment.'.$basename;
6088: if (exists($env{'form.'.$setting})) {
6089: # Save this value away
6090: if ($type eq 'scalar' &&
6091: (! exists($env{$envname}) ||
6092: $env{$envname} ne $env{'form.'.$setting})) {
6093: $SaveHash{$basename} = $env{'form.'.$setting};
6094: $AppHash{$envname} = $env{'form.'.$setting};
6095: } elsif ($type eq 'array') {
6096: my $stored_form;
6097: if (ref($env{'form.'.$setting})) {
6098: $stored_form = join(',',
6099: map {
6100: &escape($_);
6101: } sort(@{$env{'form.'.$setting}}));
6102: } else {
6103: $stored_form =
6104: &escape($env{'form.'.$setting});
6105: }
6106: # Determine if the array contents are the same.
6107: if ($stored_form ne $env{$envname}) {
6108: $SaveHash{$basename} = $stored_form;
6109: $AppHash{$envname} = $stored_form;
6110: }
6111: }
6112: }
6113: }
6114: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
6115: $udom,$uname);
6116: if ($put_result !~ /^(ok|delayed)/) {
6117: &Apache::lonnet::logthis('unable to save form parameters, '.
6118: 'got error:'.$put_result);
6119: }
6120: # Make sure these settings stick around in this session, too
6121: &Apache::lonnet::appenv(%AppHash);
6122: return;
6123: }
6124:
6125: sub restore_course_settings {
6126: my $courseid = $env{'request.course.id'};
6127: my ($prefix,$Settings) = @_;
6128: while (my ($setting,$type) = each(%$Settings)) {
6129: next if (exists($env{'form.'.$setting}));
6130: my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
6131: '.'.$setting;
6132: if (exists($env{$envname})) {
6133: if ($type eq 'scalar') {
6134: $env{'form.'.$setting} = $env{$envname};
6135: } elsif ($type eq 'array') {
6136: $env{'form.'.$setting} = [
6137: map {
6138: &unescape($_);
6139: } split(',',$env{$envname})
6140: ];
6141: }
6142: }
6143: }
6144: }
6145:
6146: ############################################################
6147: ############################################################
6148:
6149: sub commit_customrole {
6150: my ($udom,$uname,$url,$three,$four,$five,$start,$end) = @_;
6151: my $output = &mt('Assigning custom role').' "'.$five.'" by '.$four.'@'.$three.' in '.$url.
6152: ($start?', '.&mt('starting').' '.localtime($start):'').
6153: ($end?', ending '.localtime($end):'').': <b>'.
6154: &Apache::lonnet::assigncustomrole(
6155: $udom,$uname,$url,$three,$four,$five,$end,$start).
6156: '</b><br />';
6157: return $output;
6158: }
6159:
6160: sub commit_standardrole {
6161: my ($udom,$uname,$url,$three,$start,$end,$one,$two,$sec) = @_;
6162: my $output;
6163: my $logmsg;
6164: if ($three eq 'st') {
6165: my $result = &commit_studentrole(\$logmsg,$udom,$uname,$url,$three,$start,$end,$one,$two,$sec);
6166: if (($result =~ /^error/) || ($result eq 'not_in_class') || ($result eq 'unknown_course')) {
6167: $output = "Error: $result\n";
6168: } else {
6169: $output = &mt('Assigning').' '.$three.' in '.$url.
6170: ($start?', '.&mt('starting').' '.localtime($start):'').
6171: ($end?', '.&mt('ending').' '.localtime($end):'').
6172: ': <b>'.$result.'</b><br />'.
6173: &mt('Add to classlist').': <b>ok</b><br />';
6174: }
6175: } else {
6176: $output = &mt('Assigning').' '.$three.' in '.$url.
6177: ($start?', '.&mt('starting').' '.localtime($start):'').
6178: ($end?', '.&mt('ending').' '.localtime($end):'').': <b>'.
6179: &Apache::lonnet::assignrole(
6180: $udom,$uname,$url,$three,$end,$start).
6181: '</b><br />';
6182: }
6183: return $output;
6184: }
6185:
6186: sub commit_studentrole {
6187: my ($logmsg,$udom,$uname,$url,$three,$start,$end,$one,$two,$sec) = @_;
6188: my $linefeed = '<br />'."\n";
6189: my $result;
6190: if (defined($one) && defined($two)) {
6191: my $cid=$one.'_'.$two;
6192: my $oldsec=&Apache::lonnet::getsection($udom,$uname,$cid);
6193: my $secchange = 0;
6194: my $expire_role_result;
6195: my $modify_section_result;
6196: unless ($oldsec eq '-1') {
6197: unless ($sec eq $oldsec) {
6198: $secchange = 1;
6199: my $uurl='/'.$cid;
6200: $uurl=~s/\_/\//g;
6201: if ($oldsec) {
6202: $uurl.='/'.$oldsec;
6203: }
6204: $expire_role_result = &Apache::lonnet::assignrole($udom,$uname,$uurl,'st',time);
6205: $result = $expire_role_result;
6206: }
6207: }
6208: if (($expire_role_result eq 'ok') || ($secchange == 0)) {
6209: $modify_section_result = &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,$sec,$end,$start,'','',$cid);
6210: if ($modify_section_result =~ /^ok/) {
6211: if ($secchange == 1) {
6212: $$logmsg .= "Section for $uname switched from old section: $oldsec to new section: $sec".$linefeed;
6213: } elsif ($oldsec eq '-1') {
6214: $$logmsg .= "New student role for $uname in section $sec in course $cid".$linefeed;
6215: } else {
6216: $$logmsg .= "Student $uname assigned to unchanged section $sec in course $cid".$linefeed;
6217: }
6218: } else {
6219: $$logmsg .= "Error when attempting section change for $uname from old section $oldsec to new section: $sec in course $cid -error: $modify_section_result".$linefeed;
6220: }
6221: $result = $modify_section_result;
6222: } elsif ($secchange == 1) {
6223: $$logmsg .= "Error when attempting to expire role for $uname in old section $oldsec in course $cid -error: $expire_role_result".$linefeed;
6224: }
6225: } else {
6226: $$logmsg .= "Incomplete course id defined. Addition of user $uname from domain $udom to course $one\_$two, section $sec not completed.$linefeed";
6227: $result = "error: incomplete course id\n";
6228: }
6229: return $result;
6230: }
6231:
6232: ############################################################
6233: ############################################################
6234:
6235: sub construct_course {
6236: my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname) = @_;
6237: my $outcome;
6238:
6239: #
6240: # Open course
6241: #
6242: my $crstype = lc($args->{'crstype'});
6243: my %cenv=();
6244: $$courseid=&Apache::lonnet::createcourse($args->{'course_domain'},
6245: $args->{'cdescr'},
6246: $args->{'curl'},
6247: $args->{'course_home'},
6248: $args->{'nonstandard'},
6249: $args->{'crscode'},
6250: $args->{'ccuname'}.':'.
6251: $args->{'ccdomain'},
6252: $args->{'crstype'});
6253:
6254: # Note: The testing routines depend on this being output; see
6255: # Utils::Course. This needs to at least be output as a comment
6256: # if anyone ever decides to not show this, and Utils::Course::new
6257: # will need to be suitably modified.
6258: $outcome .= &mt('New LON-CAPA [_1] ID: [_2]<br />',$crstype,$$courseid);
6259: #
6260: # Check if created correctly
6261: #
6262: ($$crsudom,$$crsunum)= &LONCAPA::split_courseid($$courseid);
6263: my $crsuhome=&Apache::lonnet::homeserver($$crsunum,$$crsudom);
6264: $outcome .= &mt('Created on').': '.$crsuhome.'<br>';
6265: #
6266: # Are we cloning?
6267: #
6268: my $cloneid='';
6269: if (($args->{'clonecourse'}) && ($args->{'clonedomain'})) {
6270: $cloneid='/'.$args->{'clonedomain'}.'/'.$args->{'clonecourse'};
6271: my ($clonecrsudom,$clonecrsunum)= &LONCAPA::split_courseid($cloneid);
6272: my $clonehome=&Apache::lonnet::homeserver($clonecrsunum,$clonecrsudom);
6273: if ($clonehome eq 'no_host') {
6274: $outcome .=
6275: '<br /><font color="red">'.&mt('Attempting to clone non-existing [_1]',$crstype).' '.$cloneid.'</font>';
6276: } else {
6277: $outcome .=
6278: '<br /><font color="green">'.&mt('Cloning [_1] from [_2]',$crstype,$clonehome).'</font>';
6279: my %oldcenv=&Apache::lonnet::dump('environment',$$crsudom,$$crsunum);
6280: # Copy all files
6281: &Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid);
6282: # Restore URL
6283: $cenv{'url'}=$oldcenv{'url'};
6284: # Restore title
6285: $cenv{'description'}=$oldcenv{'description'};
6286: # restore grading mode
6287: if (defined($oldcenv{'grading'})) {
6288: $cenv{'grading'}=$oldcenv{'grading'};
6289: }
6290: # Mark as cloned
6291: $cenv{'clonedfrom'}=$cloneid;
6292: delete($cenv{'default_enrollment_start_date'});
6293: delete($cenv{'default_enrollment_end_date'});
6294: }
6295: }
6296: #
6297: # Set environment (will override cloned, if existing)
6298: #
6299: my @sections = ();
6300: my @xlists = ();
6301: if ($args->{'crstype'}) {
6302: $cenv{'type'}=$args->{'crstype'};
6303: }
6304: if ($args->{'crsid'}) {
6305: $cenv{'courseid'}=$args->{'crsid'};
6306: }
6307: if ($args->{'crscode'}) {
6308: $cenv{'internal.coursecode'}=$args->{'crscode'};
6309: }
6310: if ($args->{'crsquota'} ne '') {
6311: $cenv{'internal.coursequota'}=$args->{'crsquota'};
6312: } else {
6313: $cenv{'internal.coursequota'}=$args->{'crsquota'} = 20;
6314: }
6315: if ($args->{'ccuname'}) {
6316: $cenv{'internal.courseowner'} = $args->{'ccuname'}.
6317: ':'.$args->{'ccdomain'};
6318: } else {
6319: $cenv{'internal.courseowner'} = $args->{'curruser'};
6320: }
6321:
6322: my @badclasses = (); # Used to accumulate sections/crosslistings that did not pass classlist access check for course owner.
6323: if ($args->{'crssections'}) {
6324: $cenv{'internal.sectionnums'} = '';
6325: if ($args->{'crssections'} =~ m/,/) {
6326: @sections = split/,/,$args->{'crssections'};
6327: } else {
6328: $sections[0] = $args->{'crssections'};
6329: }
6330: if (@sections > 0) {
6331: foreach my $item (@sections) {
6332: my ($sec,$gp) = split/:/,$item;
6333: my $class = $args->{'crscode'}.$sec;
6334: my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$class,$cenv{'internal.courseowner'});
6335: $cenv{'internal.sectionnums'} .= $item.',';
6336: unless ($addcheck eq 'ok') {
6337: push @badclasses, $class;
6338: }
6339: }
6340: $cenv{'internal.sectionnums'} =~ s/,$//;
6341: }
6342: }
6343: # do not hide course coordinator from staff listing,
6344: # even if privileged
6345: $cenv{'nothideprivileged'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
6346: # add crosslistings
6347: if ($args->{'crsxlist'}) {
6348: $cenv{'internal.crosslistings'}='';
6349: if ($args->{'crsxlist'} =~ m/,/) {
6350: @xlists = split/,/,$args->{'crsxlist'};
6351: } else {
6352: $xlists[0] = $args->{'crsxlist'};
6353: }
6354: if (@xlists > 0) {
6355: foreach my $item (@xlists) {
6356: my ($xl,$gp) = split/:/,$item;
6357: my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$xl,$cenv{'internal.courseowner'});
6358: $cenv{'internal.crosslistings'} .= $item.',';
6359: unless ($addcheck eq 'ok') {
6360: push @badclasses, $xl;
6361: }
6362: }
6363: $cenv{'internal.crosslistings'} =~ s/,$//;
6364: }
6365: }
6366: if ($args->{'autoadds'}) {
6367: $cenv{'internal.autoadds'}=$args->{'autoadds'};
6368: }
6369: if ($args->{'autodrops'}) {
6370: $cenv{'internal.autodrops'}=$args->{'autodrops'};
6371: }
6372: # check for notification of enrollment changes
6373: my @notified = ();
6374: if ($args->{'notify_owner'}) {
6375: if ($args->{'ccuname'} ne '') {
6376: push(@notified,$args->{'ccuname'}.':'.$args->{'ccdomain'});
6377: }
6378: }
6379: if ($args->{'notify_dc'}) {
6380: if ($uname ne '') {
6381: push(@notified,$uname.'@'.$udom);
6382: }
6383: }
6384: if (@notified > 0) {
6385: my $notifylist;
6386: if (@notified > 1) {
6387: $notifylist = join(',',@notified);
6388: } else {
6389: $notifylist = $notified[0];
6390: }
6391: $cenv{'internal.notifylist'} = $notifylist;
6392: }
6393: if (@badclasses > 0) {
6394: my %lt=&Apache::lonlocal::texthash(
6395: 'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course. However, if automated course roster updates are enabled for this class, these particular sections/crosslistings will not contribute towards enrollment, because the user identified as the course owner for this LON-CAPA course',
6396: 'dnhr' => 'does not have rights to access enrollment in these classes',
6397: 'adby' => 'as determined by the policies of your institution on access to official classlists'
6398: );
6399: $outcome .= '<font color="red">'.$lt{'tclb'}.' ('.$cenv{'internal.courseowner'}.') - '.$lt{'dnhr'}.' ('.$lt{'adby'}.').<br /><ul>'."\n";
6400: foreach (@badclasses) {
6401: $outcome .= "<li>$_</li>\n";
6402: }
6403: $outcome .= "</ul><br /><br /></font>\n";
6404: }
6405: if ($args->{'no_end_date'}) {
6406: $args->{'endaccess'} = 0;
6407: }
6408: $cenv{'internal.autostart'}=$args->{'enrollstart'};
6409: $cenv{'internal.autoend'}=$args->{'enrollend'};
6410: $cenv{'default_enrollment_start_date'}=$args->{'startaccess'};
6411: $cenv{'default_enrollment_end_date'}=$args->{'endaccess'};
6412: if ($args->{'showphotos'}) {
6413: $cenv{'internal.showphotos'}=$args->{'showphotos'};
6414: }
6415: $cenv{'internal.authtype'} = $args->{'authtype'};
6416: $cenv{'internal.autharg'} = $args->{'autharg'};
6417: if ( ($cenv{'internal.authtype'} =~ /^krb/) && ($cenv{'internal.autoadds'} == 1)) {
6418: if (! defined($cenv{'internal.autharg'}) || $cenv{'internal.autharg'} eq '') {
6419: $outcome .= '<font color="red" size="+1">'.
6420: &mt('As you did not include the default Kerberos domain to be used for authentication in this class, the institutional data used by the automated enrollment process must include the Kerberos domain for each new student').'</font></p>';
6421: }
6422: }
6423: if (($args->{'ccdomain'}) && ($args->{'ccuname'})) {
6424: if ($args->{'setpolicy'}) {
6425: $cenv{'policy.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
6426: }
6427: if ($args->{'setcontent'}) {
6428: $cenv{'question.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
6429: }
6430: }
6431: if ($args->{'reshome'}) {
6432: $cenv{'reshome'}=$args->{'reshome'}.'/';
6433: $cenv{'reshome'}=~s/\/+$/\//;
6434: }
6435: #
6436: # course has keyed access
6437: #
6438: if ($args->{'setkeys'}) {
6439: $cenv{'keyaccess'}='yes';
6440: }
6441: # if specified, key authority is not course, but user
6442: # only active if keyaccess is yes
6443: if ($args->{'keyauth'}) {
6444: my ($user,$domain) = split(':',$args->{'keyauth'});
6445: $user = &LONCAPA::clean_username($user);
6446: $domain = &LONCAPA::clean_username($domain);
6447: if ($user ne '' && $domain ne '') {
6448: $cenv{'keyauth'}=$user.':'.$domain;
6449: }
6450: }
6451:
6452: if ($args->{'disresdis'}) {
6453: $cenv{'pch.roles.denied'}='st';
6454: }
6455: if ($args->{'disablechat'}) {
6456: $cenv{'plc.roles.denied'}='st';
6457: }
6458:
6459: # Record we've not yet viewed the Course Initialization Helper for this
6460: # course
6461: $cenv{'course.helper.not.run'} = 1;
6462: #
6463: # Use new Randomseed
6464: #
6465: $cenv{'rndseed'}=&Apache::lonnet::latest_rnd_algorithm_id();;
6466: $cenv{'receiptalg'}=&Apache::lonnet::latest_receipt_algorithm_id();;
6467: #
6468: # The encryption code and receipt prefix for this course
6469: #
6470: $cenv{'internal.encseed'}=$Apache::lonnet::perlvar{'lonReceipt'}.$$.time.int(rand(9999));
6471: $cenv{'internal.encpref'}=100+int(9*rand(99));
6472: #
6473: # By default, use standard grading
6474: if (!defined($cenv{'grading'})) { $cenv{'grading'} = 'standard'; }
6475:
6476: $outcome .= ('<br />'.&mt('Setting environment').': '.
6477: &Apache::lonnet::put('environment',\%cenv,$$crsudom,$$crsunum).'<br>');
6478: #
6479: # Open all assignments
6480: #
6481: if ($args->{'openall'}) {
6482: my $storeunder=$$crsudom.'_'.$$crsunum.'.0.opendate';
6483: my %storecontent = ($storeunder => time,
6484: $storeunder.'.type' => 'date_start');
6485:
6486: $outcome .= &mt('Opening all assignments').': '.&Apache::lonnet::cput
6487: ('resourcedata',\%storecontent,$$crsudom,$$crsunum).'<br>';
6488: }
6489: #
6490: # Set first page
6491: #
6492: unless (($args->{'nonstandard'}) || ($args->{'firstres'} eq 'blank')
6493: || ($cloneid)) {
6494: use LONCAPA::map;
6495: $outcome .= &mt('Setting first resource').': ';
6496:
6497: my $map = '/uploaded/'.$$crsudom.'/'.$$crsunum.'/default.sequence';
6498: my ($errtext,$fatal)=&LONCAPA::map::mapread($map);
6499:
6500: $outcome .= ($fatal?$errtext:'read ok').' - ';
6501: my $title; my $url;
6502: if ($args->{'firstres'} eq 'syl') {
6503: $title='Syllabus';
6504: $url='/public/'.$$crsudom.'/'.$$crsunum.'/syllabus';
6505: } else {
6506: $title='Navigate Contents';
6507: $url='/adm/navmaps';
6508: }
6509:
6510: $LONCAPA::map::resources[1]=$title.':'.$url.':false:start:res';
6511: (my $outtext,$errtext) = &LONCAPA::map::storemap($map,1);
6512:
6513: if ($errtext) { $fatal=2; }
6514: $outcome .= ($fatal?$errtext:'write ok').'<br />';
6515: }
6516: return $outcome;
6517: }
6518:
6519: ############################################################
6520: ############################################################
6521:
6522: sub course_type {
6523: my ($cid) = @_;
6524: if (!defined($cid)) {
6525: $cid = $env{'request.course.id'};
6526: }
6527: if (defined($env{'course.'.$cid.'.type'})) {
6528: return $env{'course.'.$cid.'.type'};
6529: } else {
6530: return 'Course';
6531: }
6532: }
6533:
6534: sub group_term {
6535: my $crstype = &course_type();
6536: my %names = (
6537: 'Course' => 'group',
6538: 'Group' => 'team',
6539: );
6540: return $names{$crstype};
6541: }
6542:
6543: sub icon {
6544: my ($file)=@_;
6545: my $curfext = (split(/\./,$file))[-1];
6546: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
6547: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
6548: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
6549: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
6550: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
6551: $curfext.".gif") {
6552: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
6553: $curfext.".gif";
6554: }
6555: }
6556: return &lonhttpdurl($iconname);
6557: }
6558:
6559: sub lonhttpdurl {
6560: my ($url)=@_;
6561: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
6562: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
6563: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
6564: }
6565:
6566: sub connection_aborted {
6567: my ($r)=@_;
6568: $r->print(" ");$r->rflush();
6569: my $c = $r->connection;
6570: return $c->aborted();
6571: }
6572:
6573: # Escapes strings that may have embedded 's that will be put into
6574: # strings as 'strings'.
6575: sub escape_single {
6576: my ($input) = @_;
6577: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
6578: $input =~ s/\'/\\\'/g; # Esacpe the 's....
6579: return $input;
6580: }
6581:
6582: # Same as escape_single, but escape's "'s This
6583: # can be used for "strings"
6584: sub escape_double {
6585: my ($input) = @_;
6586: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
6587: $input =~ s/\"/\\\"/g; # Esacpe the "s....
6588: return $input;
6589: }
6590:
6591: # Escapes the last element of a full URL.
6592: sub escape_url {
6593: my ($url) = @_;
6594: my @urlslices = split(/\//, $url,-1);
6595: my $lastitem = &escape(pop(@urlslices));
6596: return join('/',@urlslices).'/'.$lastitem;
6597: }
6598:
6599: # -------------------------------------------------------- Initliaze user login
6600: sub init_user_environment {
6601: my ($r, $username, $domain, $authhost, $form, $args) = @_;
6602: my $lonids=$Apache::lonnet::perlvar{'lonIDsDir'};
6603:
6604: my $public=($username eq 'public' && $domain eq 'public');
6605:
6606: # See if old ID present, if so, remove
6607:
6608: my ($filename,$cookie,$userroles);
6609: my $now=time;
6610:
6611: if ($public) {
6612: my $max_public=100;
6613: my $oldest;
6614: my $oldest_time=0;
6615: for(my $next=1;$next<=$max_public;$next++) {
6616: if (-e $lonids."/publicuser_$next.id") {
6617: my $mtime=(stat($lonids."/publicuser_$next.id"))[9];
6618: if ($mtime<$oldest_time || !$oldest_time) {
6619: $oldest_time=$mtime;
6620: $oldest=$next;
6621: }
6622: } else {
6623: $cookie="publicuser_$next";
6624: last;
6625: }
6626: }
6627: if (!$cookie) { $cookie="publicuser_$oldest"; }
6628: } else {
6629: # if this isn't a robot, kill any existing non-robot sessions
6630: if (!$args->{'robot'}) {
6631: opendir(DIR,$lonids);
6632: while ($filename=readdir(DIR)) {
6633: if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
6634: unlink($lonids.'/'.$filename);
6635: }
6636: }
6637: closedir(DIR);
6638: }
6639: # Give them a new cookie
6640: my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
6641: : $now);
6642: $cookie="$username\_$id\_$domain\_$authhost";
6643:
6644: # Initialize roles
6645:
6646: $userroles=&Apache::lonnet::rolesinit($domain,$username,$authhost);
6647: }
6648: # ------------------------------------ Check browser type and MathML capability
6649:
6650: my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
6651: $clientunicode,$clientos) = &decode_user_agent($r);
6652:
6653: # -------------------------------------- Any accessibility options to remember?
6654: if (($form->{'interface'}) && ($form->{'remember'} eq 'true')) {
6655: foreach my $option ('imagesuppress','appletsuppress',
6656: 'embedsuppress','fontenhance','blackwhite') {
6657: if ($form->{$option} eq 'true') {
6658: &Apache::lonnet::put('environment',{$option => 'on'},
6659: $domain,$username);
6660: } else {
6661: &Apache::lonnet::del('environment',[$option],
6662: $domain,$username);
6663: }
6664: }
6665: }
6666: # ------------------------------------------------------------- Get environment
6667:
6668: my %userenv = &Apache::lonnet::dump('environment',$domain,$username);
6669: my ($tmp) = keys(%userenv);
6670: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
6671: # default remote control to off
6672: if ($userenv{'remote'} ne 'on') { $userenv{'remote'} = 'off'; }
6673: } else {
6674: undef(%userenv);
6675: }
6676: if (($userenv{'interface'}) && (!$form->{'interface'})) {
6677: $form->{'interface'}=$userenv{'interface'};
6678: }
6679: $env{'environment.remote'}=$userenv{'remote'};
6680: if ($userenv{'texengine'} eq 'ttm') { $clientmathml=1; }
6681:
6682: # --------------- Do not trust query string to be put directly into environment
6683: foreach my $option ('imagesuppress','appletsuppress',
6684: 'embedsuppress','fontenhance','blackwhite',
6685: 'interface','localpath','localres') {
6686: $form->{$option}=~s/[\n\r\=]//gs;
6687: }
6688: # --------------------------------------------------------- Write first profile
6689:
6690: {
6691: my %initial_env =
6692: ("user.name" => $username,
6693: "user.domain" => $domain,
6694: "user.home" => $authhost,
6695: "browser.type" => $clientbrowser,
6696: "browser.version" => $clientversion,
6697: "browser.mathml" => $clientmathml,
6698: "browser.unicode" => $clientunicode,
6699: "browser.os" => $clientos,
6700: "server.domain" => $Apache::lonnet::perlvar{'lonDefDomain'},
6701: "request.course.fn" => '',
6702: "request.course.uri" => '',
6703: "request.course.sec" => '',
6704: "request.role" => 'cm',
6705: "request.role.adv" => $env{'user.adv'},
6706: "request.host" => $ENV{'REMOTE_ADDR'},);
6707:
6708: if ($form->{'localpath'}) {
6709: $initial_env{"browser.localpath"} = $form->{'localpath'};
6710: $initial_env{"browser.localres"} = $form->{'localres'};
6711: }
6712:
6713: if ($public) {
6714: $initial_env{"environment.remote"} = "off";
6715: }
6716: if ($form->{'interface'}) {
6717: $form->{'interface'}=~s/\W//gs;
6718: $initial_env{"browser.interface"} = $form->{'interface'};
6719: $env{'browser.interface'}=$form->{'interface'};
6720: foreach my $option ('imagesuppress','appletsuppress',
6721: 'embedsuppress','fontenhance','blackwhite') {
6722: if (($form->{$option} eq 'true') ||
6723: ($userenv{$option} eq 'on')) {
6724: $initial_env{"browser.$option"} = "on";
6725: }
6726: }
6727: }
6728:
6729: $env{'user.environment'} = "$lonids/$cookie.id";
6730:
6731: if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
6732: &GDBM_WRCREAT(),0640)) {
6733: &_add_to_env(\%disk_env,\%initial_env);
6734: &_add_to_env(\%disk_env,\%userenv,'environment.');
6735: &_add_to_env(\%disk_env,$userroles);
6736: if (ref($args->{'extra_env'})) {
6737: &_add_to_env(\%disk_env,$args->{'extra_env'});
6738: }
6739: untie(%disk_env);
6740: } else {
6741: &Apache::lonnet::logthis("<font color=\"blue\">WARNING: ".
6742: 'Could not create environment storage in lonauth: '.$!.'</font>');
6743: return 'error: '.$!;
6744: }
6745: }
6746: $env{'request.role'}='cm';
6747: $env{'request.role.adv'}=$env{'user.adv'};
6748: $env{'browser.type'}=$clientbrowser;
6749:
6750: return $cookie;
6751:
6752: }
6753:
6754: sub _add_to_env {
6755: my ($idf,$env_data,$prefix) = @_;
6756: while (my ($key,$value) = each(%$env_data)) {
6757: $idf->{$prefix.$key} = $value;
6758: $env{$prefix.$key} = $value;
6759: }
6760: }
6761:
6762:
6763: =pod
6764:
6765: =back
6766:
6767: =cut
6768:
6769: 1;
6770: __END__;
6771:
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