1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.195 2004/07/03 19:12:41 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::Constants qw(:common :http :methods);
62: use Apache::lonmsg();
63: use Apache::lonmenu();
64: use Apache::lonlocal;
65: use HTML::Entities;
66:
67: my $readit;
68:
69: ##
70: ## Global Variables
71: ##
72:
73: # ----------------------------------------------- Filetypes/Languages/Copyright
74: my %language;
75: my %supported_language;
76: my %cprtag;
77: my %scprtag;
78: my %fe; my %fd;
79: my %category_extensions;
80:
81: # ---------------------------------------------- Designs
82:
83: my %designhash;
84:
85: # ---------------------------------------------- Thesaurus variables
86: #
87: # %Keywords:
88: # A hash used by &keyword to determine if a word is considered a keyword.
89: # $thesaurus_db_file
90: # Scalar containing the full path to the thesaurus database.
91:
92: my %Keywords;
93: my $thesaurus_db_file;
94:
95: #
96: # Initialize values from language.tab, copyright.tab, filetypes.tab,
97: # thesaurus.tab, and filecategories.tab.
98: #
99: BEGIN {
100: # Variable initialization
101: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
102: #
103: unless ($readit) {
104: # ------------------------------------------------------------------- languages
105: {
106: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
107: '/language.tab';
108: if ( open(my $fh,"<$langtabfile") ) {
109: while (<$fh>) {
110: next if /^\#/;
111: chomp;
112: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
113: $language{$key}=$val.' - '.$enc;
114: if ($sup) {
115: $supported_language{$key}=$sup;
116: }
117: }
118: close($fh);
119: }
120: }
121: # ------------------------------------------------------------------ copyrights
122: {
123: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
124: '/copyright.tab';
125: if ( open (my $fh,"<$copyrightfile") ) {
126: while (<$fh>) {
127: next if /^\#/;
128: chomp;
129: my ($key,$val)=(split(/\s+/,$_,2));
130: $cprtag{$key}=$val;
131: }
132: close($fh);
133: }
134: }
135: # ------------------------------------------------------------------ source copyrights
136: {
137: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
138: '/source_copyright.tab';
139: if ( open (my $fh,"<$sourcecopyrightfile") ) {
140: while (<$fh>) {
141: next if /^\#/;
142: chomp;
143: my ($key,$val)=(split(/\s+/,$_,2));
144: $scprtag{$key}=$val;
145: }
146: close($fh);
147: }
148: }
149:
150: # -------------------------------------------------------------- domain designs
151:
152: my $filename;
153: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
154: opendir(DIR,$designdir);
155: while ($filename=readdir(DIR)) {
156: my ($domain)=($filename=~/^(\w+)\./);
157: {
158: my $designfile = $designdir.'/'.$filename;
159: if ( open (my $fh,"<$designfile") ) {
160: while (<$fh>) {
161: next if /^\#/;
162: chomp;
163: my ($key,$val)=(split(/\=/,$_));
164: if ($val) { $designhash{$domain.'.'.$key}=$val; }
165: }
166: close($fh);
167: }
168: }
169:
170: }
171: closedir(DIR);
172:
173:
174: # ------------------------------------------------------------- file categories
175: {
176: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
177: '/filecategories.tab';
178: if ( open (my $fh,"<$categoryfile") ) {
179: while (<$fh>) {
180: next if /^\#/;
181: chomp;
182: my ($extension,$category)=(split(/\s+/,$_,2));
183: push @{$category_extensions{lc($category)}},$extension;
184: }
185: close($fh);
186: }
187:
188: }
189: # ------------------------------------------------------------------ file types
190: {
191: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
192: '/filetypes.tab';
193: if ( open (my $fh,"<$typesfile") ) {
194: while (<$fh>) {
195: next if (/^\#/);
196: chomp;
197: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
198: if ($descr ne '') {
199: $fe{$ending}=lc($emb);
200: $fd{$ending}=$descr;
201: }
202: }
203: close($fh);
204: }
205: }
206: &Apache::lonnet::logthis(
207: "<font color=yellow>INFO: Read file types</font>");
208: $readit=1;
209: } # end of unless($readit)
210:
211: }
212:
213: ###############################################################
214: ## HTML and Javascript Helper Functions ##
215: ###############################################################
216:
217: =pod
218:
219: =head1 HTML and Javascript Functions
220:
221: =over 4
222:
223: =item * browser_and_searcher_javascript ()
224:
225: X<browsing, javascript>X<searching, javascript>Returns a string
226: containing javascript with two functions, C<openbrowser> and
227: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
228: tags.
229:
230: =item * openbrowser(formname,elementname,only,omit) [javascript]
231:
232: inputs: formname, elementname, only, omit
233:
234: formname and elementname indicate the name of the html form and name of
235: the element that the results of the browsing selection are to be placed in.
236:
237: Specifying 'only' will restrict the browser to displaying only files
238: with the given extension. Can be a comma separated list.
239:
240: Specifying 'omit' will restrict the browser to NOT displaying files
241: with the given extension. Can be a comma separated list.
242:
243: =item * opensearcher(formname, elementname) [javascript]
244:
245: Inputs: formname, elementname
246:
247: formname and elementname specify the name of the html form and the name
248: of the element the selection from the search results will be placed in.
249:
250: =cut
251:
252: sub browser_and_searcher_javascript {
253: my $resurl=&lastresurl();
254: return <<END;
255: var editbrowser = null;
256: function openbrowser(formname,elementname,only,omit,titleelement) {
257: var url = '$resurl/?';
258: if (editbrowser == null) {
259: url += 'launch=1&';
260: }
261: url += 'catalogmode=interactive&';
262: url += 'mode=edit&';
263: url += 'form=' + formname + '&';
264: if (only != null) {
265: url += 'only=' + only + '&';
266: }
267: if (omit != null) {
268: url += 'omit=' + omit + '&';
269: }
270: if (titleelement != null) {
271: url += 'titleelement=' + titleelement + '&';
272: }
273: url += 'element=' + elementname + '';
274: var title = 'Browser';
275: var options = 'scrollbars=1,resizable=1,menubar=0';
276: options += ',width=700,height=600';
277: editbrowser = open(url,title,options,'1');
278: editbrowser.focus();
279: }
280: var editsearcher;
281: function opensearcher(formname,elementname,titleelement) {
282: var url = '/adm/searchcat?';
283: if (editsearcher == null) {
284: url += 'launch=1&';
285: }
286: url += 'catalogmode=interactive&';
287: url += 'mode=edit&';
288: url += 'form=' + formname + '&';
289: if (titleelement != null) {
290: url += 'titleelement=' + titleelement + '&';
291: }
292: url += 'element=' + elementname + '';
293: var title = 'Search';
294: var options = 'scrollbars=1,resizable=1,menubar=0';
295: options += ',width=700,height=600';
296: editsearcher = open(url,title,options,'1');
297: editsearcher.focus();
298: }
299: END
300: }
301:
302: sub lastresurl {
303: if ($ENV{'environment.lastresurl'}) {
304: return $ENV{'environment.lastresurl'}
305: } else {
306: return '/res';
307: }
308: }
309:
310: sub storeresurl {
311: my $resurl=&Apache::lonnet::clutter(shift);
312: unless ($resurl=~/^\/res/) { return 0; }
313: $resurl=~s/\/$//;
314: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
315: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
316: return 1;
317: }
318:
319: sub studentbrowser_javascript {
320: unless (
321: (($ENV{'request.course.id'}) &&
322: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
323: || ($ENV{'request.role'}=~/^(au|dc|su)/)
324: ) { return ''; }
325: return (<<'ENDSTDBRW');
326: <script type="text/javascript" language="Javascript" >
327: var stdeditbrowser;
328: function openstdbrowser(formname,uname,udom,roleflag) {
329: var url = '/adm/pickstudent?';
330: var filter;
331: eval('filter=document.'+formname+'.'+uname+'.value;');
332: if (filter != null) {
333: if (filter != '') {
334: url += 'filter='+filter+'&';
335: }
336: }
337: url += 'form=' + formname + '&unameelement='+uname+
338: '&udomelement='+udom;
339: if (roleflag) { url+="&roles=1"; }
340: var title = 'Student_Browser';
341: var options = 'scrollbars=1,resizable=1,menubar=0';
342: options += ',width=700,height=600';
343: stdeditbrowser = open(url,title,options,'1');
344: stdeditbrowser.focus();
345: }
346: </script>
347: ENDSTDBRW
348: }
349:
350: sub selectstudent_link {
351: my ($form,$unameele,$udomele)=@_;
352: if ($ENV{'request.course.id'}) {
353: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
354: return '';
355: }
356: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
357: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
358: }
359: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
360: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
361: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
362: }
363: return '';
364: }
365:
366: sub coursebrowser_javascript {
367: my ($domainfilter)=@_;
368: return (<<ENDSTDBRW);
369: <script type="text/javascript" language="Javascript" >
370: var stdeditbrowser;
371: function opencrsbrowser(formname,uname,udom,desc) {
372: var url = '/adm/pickcourse?';
373: var filter;
374: if (filter != null) {
375: if (filter != '') {
376: url += 'filter='+filter+'&';
377: }
378: }
379: var domainfilter='$domainfilter';
380: if (domainfilter != null) {
381: if (domainfilter != '') {
382: url += 'domainfilter='+domainfilter+'&';
383: }
384: }
385: url += 'form=' + formname + '&cnumelement='+uname+
386: '&cdomelement='+udom+
387: '&cnameelement='+desc;
388: var title = 'Course_Browser';
389: var options = 'scrollbars=1,resizable=1,menubar=0';
390: options += ',width=700,height=600';
391: stdeditbrowser = open(url,title,options,'1');
392: stdeditbrowser.focus();
393: }
394: </script>
395: ENDSTDBRW
396: }
397:
398: sub selectcourse_link {
399: my ($form,$unameele,$udomele,$desc)=@_;
400: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
401: '","'.$udomele.'","'.$desc.'");'."'>".&mt('Select Course')."</a>";
402: }
403:
404: =pod
405:
406: =item * linked_select_forms(...)
407:
408: linked_select_forms returns a string containing a <script></script> block
409: and html for two <select> menus. The select menus will be linked in that
410: changing the value of the first menu will result in new values being placed
411: in the second menu. The values in the select menu will appear in alphabetical
412: order.
413:
414: linked_select_forms takes the following ordered inputs:
415:
416: =over 4
417:
418: =item * $formname, the name of the <form> tag
419:
420: =item * $middletext, the text which appears between the <select> tags
421:
422: =item * $firstdefault, the default value for the first menu
423:
424: =item * $firstselectname, the name of the first <select> tag
425:
426: =item * $secondselectname, the name of the second <select> tag
427:
428: =item * $hashref, a reference to a hash containing the data for the menus.
429:
430: =back
431:
432: Below is an example of such a hash. Only the 'text', 'default', and
433: 'select2' keys must appear as stated. keys(%menu) are the possible
434: values for the first select menu. The text that coincides with the
435: first menu value is given in $menu{$choice1}->{'text'}. The values
436: and text for the second menu are given in the hash pointed to by
437: $menu{$choice1}->{'select2'}.
438:
439: my %menu = ( A1 => { text =>"Choice A1" ,
440: default => "B3",
441: select2 => {
442: B1 => "Choice B1",
443: B2 => "Choice B2",
444: B3 => "Choice B3",
445: B4 => "Choice B4"
446: }
447: },
448: A2 => { text =>"Choice A2" ,
449: default => "C2",
450: select2 => {
451: C1 => "Choice C1",
452: C2 => "Choice C2",
453: C3 => "Choice C3"
454: }
455: },
456: A3 => { text =>"Choice A3" ,
457: default => "D6",
458: select2 => {
459: D1 => "Choice D1",
460: D2 => "Choice D2",
461: D3 => "Choice D3",
462: D4 => "Choice D4",
463: D5 => "Choice D5",
464: D6 => "Choice D6",
465: D7 => "Choice D7"
466: }
467: }
468: );
469:
470: =cut
471:
472: sub linked_select_forms {
473: my ($formname,
474: $middletext,
475: $firstdefault,
476: $firstselectname,
477: $secondselectname,
478: $hashref
479: ) = @_;
480: my $second = "document.$formname.$secondselectname";
481: my $first = "document.$formname.$firstselectname";
482: # output the javascript to do the changing
483: my $result = '';
484: $result.="<script>\n";
485: $result.="var select2data = new Object();\n";
486: $" = '","';
487: my $debug = '';
488: foreach my $s1 (sort(keys(%$hashref))) {
489: $result.="select2data.d_$s1 = new Object();\n";
490: $result.="select2data.d_$s1.def = new String('".
491: $hashref->{$s1}->{'default'}."');\n";
492: $result.="select2data.d_$s1.values = new Array(";
493: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
494: $result.="\"@s2values\");\n";
495: $result.="select2data.d_$s1.texts = new Array(";
496: my @s2texts;
497: foreach my $value (@s2values) {
498: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
499: }
500: $result.="\"@s2texts\");\n";
501: }
502: $"=' ';
503: $result.= <<"END";
504:
505: function select1_changed() {
506: // Determine new choice
507: var newvalue = "d_" + $first.value;
508: // update select2
509: var values = select2data[newvalue].values;
510: var texts = select2data[newvalue].texts;
511: var select2def = select2data[newvalue].def;
512: var i;
513: // out with the old
514: for (i = 0; i < $second.options.length; i++) {
515: $second.options[i] = null;
516: }
517: // in with the nuclear
518: for (i=0;i<values.length; i++) {
519: $second.options[i] = new Option(values[i]);
520: $second.options[i].value = values[i];
521: $second.options[i].text = texts[i];
522: if (values[i] == select2def) {
523: $second.options[i].selected = true;
524: }
525: }
526: }
527: </script>
528: END
529: # output the initial values for the selection lists
530: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
531: foreach my $value (sort(keys(%$hashref))) {
532: $result.=" <option value=\"$value\" ";
533: $result.=" selected=\"true\" " if ($value eq $firstdefault);
534: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
535: }
536: $result .= "</select>\n";
537: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
538: $result .= $middletext;
539: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
540: my $seconddefault = $hashref->{$firstdefault}->{'default'};
541: foreach my $value (sort(keys(%select2))) {
542: $result.=" <option value=\"$value\" ";
543: $result.=" selected=\"true\" " if ($value eq $seconddefault);
544: $result.=">".&mt($select2{$value})."</option>\n";
545: }
546: $result .= "</select>\n";
547: # return $debug;
548: return $result;
549: } # end of sub linked_select_forms {
550:
551: =pod
552:
553: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
554:
555: Returns a string corresponding to an HTML link to the given help
556: $topic, where $topic corresponds to the name of a .tex file in
557: /home/httpd/html/adm/help/tex, with underscores replaced by
558: spaces.
559:
560: $text will optionally be linked to the same topic, allowing you to
561: link text in addition to the graphic. If you do not want to link
562: text, but wish to specify one of the later parameters, pass an
563: empty string.
564:
565: $stayOnPage is a value that will be interpreted as a boolean. If true,
566: the link will not open a new window. If false, the link will open
567: a new window using Javascript. (Default is false.)
568:
569: $width and $height are optional numerical parameters that will
570: override the width and height of the popped up window, which may
571: be useful for certain help topics with big pictures included.
572:
573: =cut
574:
575: sub help_open_topic {
576: my ($topic, $text, $stayOnPage, $width, $height) = @_;
577: $text = "" if (not defined $text);
578: $stayOnPage = 0 if (not defined $stayOnPage);
579: if ($ENV{'browser.interface'} eq 'textual' ||
580: $ENV{'environment.remote'} eq 'off' ) {
581: $stayOnPage=1;
582: }
583: $width = 350 if (not defined $width);
584: $height = 400 if (not defined $height);
585: my $filename = $topic;
586: $filename =~ s/ /_/g;
587:
588: my $template = "";
589: my $link;
590:
591: $topic=~s/\W/\_/g;
592:
593: if (!$stayOnPage)
594: {
595: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
596: }
597: else
598: {
599: $link = "/adm/help/${filename}.hlp";
600: }
601:
602: # Add the text
603: if ($text ne "")
604: {
605: $template .=
606: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
607: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
608: }
609:
610: # Add the graphic
611: my $title = &mt('Online Help');
612: $template .= <<"ENDTEMPLATE";
613: <a href="$link" title="$title"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
614: ENDTEMPLATE
615: if ($text ne '') { $template.='</td></tr></table>' };
616: return $template;
617:
618: }
619:
620: # This is a quicky function for Latex cheatsheet editing, since it
621: # appears in at least four places
622: sub helpLatexCheatsheet {
623: my $other = shift;
624: my $addOther = '';
625: if ($other) {
626: $addOther = Apache::loncommon::help_open_topic($other, shift,
627: undef, undef, 600) .
628: '</td><td>';
629: }
630: return '<table><tr><td>'.
631: $addOther .
632: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
633: undef,undef,600)
634: .'</td><td>'.
635: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
636: undef,undef,600)
637: .'</td></tr></table>';
638: }
639:
640: sub help_open_menu {
641: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
642: $text = "" if (not defined $text);
643: $stayOnPage = 0 if (not defined $stayOnPage);
644: if ($ENV{'browser.interface'} eq 'textual' ||
645: $ENV{'environment.remote'} eq 'off' ) {
646: $stayOnPage=1;
647: }
648: $width = 620 if (not defined $width);
649: $height = 600 if (not defined $height);
650: my $link='';
651: my $title = &mt('Choose your help');
652: my $origurl = $ENV{'REQUEST_URI'};
653: my $timestamp = time;
654: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
655: $$_ = &Apache::lonnet::escape($$_);
656: }
657:
658: if (!$stayOnPage) {
659: $link = "javascript:helpMenu('open')";
660: } else {
661: $link = "javascript:helpMenu('display')";
662: }
663: my $banner_link = "/adm/helpmenu?page=banner&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
664: my $details_link = "/adm/helpmenu?page=body&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
665: my $template .= <<"ENDTEMPLATE";
666: <script>
667: function helpMenu(caller) {
668: if (caller == 'open') {
669: newWindow = window.open("","helpmenu","HEIGHT=$height,WIDTH=$width,resize=yes,scrollbars=yes" )
670: caller = newWindow.document
671: } else {
672: caller = this.document
673: }
674: caller.write("<html><head><title>LON-CAPA Help Menu</title><meta http-equiv='pragma' content='no-cache'></head>")
675: caller.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
676: caller.write("</html>")
677: caller.close()
678: if (caller == newWindow.document) {
679: caller.focus()
680: }
681: }
682: </script>
683: <a href="$link" title="$title"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(Help Menu)" /></a>
684: ENDTEMPLATE
685: return $template;
686: }
687:
688: sub help_open_bug {
689: my ($topic, $text, $stayOnPage, $width, $height) = @_;
690: unless ($ENV{'user.adv'}) { return ''; }
691: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
692: $text = "" if (not defined $text);
693: $stayOnPage = 0 if (not defined $stayOnPage);
694: if ($ENV{'browser.interface'} eq 'textual' ||
695: $ENV{'environment.remote'} eq 'off' ) {
696: $stayOnPage=1;
697: }
698: $width = 600 if (not defined $width);
699: $height = 600 if (not defined $height);
700:
701: $topic=~s/\W+/\+/g;
702: my $link='';
703: my $template='';
704: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
705: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
706: if (!$stayOnPage)
707: {
708: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
709: }
710: else
711: {
712: $link = $url;
713: }
714: # Add the text
715: if ($text ne "")
716: {
717: $template .=
718: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
719: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
720: }
721:
722: # Add the graphic
723: my $title = &mt('Report a Bug');
724: $template .= <<"ENDTEMPLATE";
725: <a href="$link" title="$title"><image src="/adm/lonMisc/smallBug.gif" border="0" alt="(Bug: $topic)" /></a>
726: ENDTEMPLATE
727: if ($text ne '') { $template.='</td></tr></table>' };
728: return $template;
729:
730: }
731:
732: sub help_open_faq {
733: my ($topic, $text, $stayOnPage, $width, $height) = @_;
734: unless ($ENV{'user.adv'}) { return ''; }
735: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
736: $text = "" if (not defined $text);
737: $stayOnPage = 0 if (not defined $stayOnPage);
738: if ($ENV{'browser.interface'} eq 'textual' ||
739: $ENV{'environment.remote'} eq 'off' ) {
740: $stayOnPage=1;
741: }
742: $width = 350 if (not defined $width);
743: $height = 400 if (not defined $height);
744:
745: $topic=~s/\W+/\+/g;
746: my $link='';
747: my $template='';
748: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
749: if (!$stayOnPage)
750: {
751: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
752: }
753: else
754: {
755: $link = $url;
756: }
757:
758: # Add the text
759: if ($text ne "")
760: {
761: $template .=
762: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
763: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
764: }
765:
766: # Add the graphic
767: my $title = &mt('View the FAQ');
768: $template .= <<"ENDTEMPLATE";
769: <a href="$link" title="$title"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(FAQ: $topic)" /></a>
770: ENDTEMPLATE
771: if ($text ne '') { $template.='</td></tr></table>' };
772: return $template;
773:
774: }
775:
776: ###############################################################
777: ###############################################################
778:
779: =pod
780:
781: =item * csv_translate($text)
782:
783: Translate $text to allow it to be output as a 'comma separated values'
784: format.
785:
786: =cut
787:
788: ###############################################################
789: ###############################################################
790: sub csv_translate {
791: my $text = shift;
792: $text =~ s/\"/\"\"/g;
793: $text =~ s/\n//g;
794: return $text;
795: }
796:
797:
798: ###############################################################
799: ###############################################################
800:
801: =pod
802:
803: =item * define_excel_formats
804:
805: Define some commonly used Excel cell formats.
806:
807: Currently supported formats:
808:
809: =over 4
810:
811: =item header
812:
813: =item bold
814:
815: =item h1
816:
817: =item h2
818:
819: =item h3
820:
821: =item date
822:
823: =back
824:
825: Inputs: $workbook
826:
827: Returns: $format, a hash reference.
828:
829: =cut
830:
831: ###############################################################
832: ###############################################################
833: sub define_excel_formats {
834: my ($workbook) = @_;
835: my $format;
836: $format->{'header'} = $workbook->add_format(bold => 1,
837: bottom => 1,
838: align => 'center');
839: $format->{'bold'} = $workbook->add_format(bold=>1);
840: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
841: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
842: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
843: $format->{'date'} = $workbook->add_format(num_format=>
844: 'mmm d yyyy hh:mm AM/PM');
845: return $format;
846: }
847:
848: ###############################################################
849: ###############################################################
850:
851: =pod
852:
853: =item * change_content_javascript():
854:
855: This and the next function allow you to create small sections of an
856: otherwise static HTML page that you can update on the fly with
857: Javascript, even in Netscape 4.
858:
859: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
860: must be written to the HTML page once. It will prove the Javascript
861: function "change(name, content)". Calling the change function with the
862: name of the section
863: you want to update, matching the name passed to C<changable_area>, and
864: the new content you want to put in there, will put the content into
865: that area.
866:
867: B<Note>: Netscape 4 only reserves enough space for the changable area
868: to contain room for the original contents. You need to "make space"
869: for whatever changes you wish to make, and be B<sure> to check your
870: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
871: it's adequate for updating a one-line status display, but little more.
872: This script will set the space to 100% width, so you only need to
873: worry about height in Netscape 4.
874:
875: Modern browsers are much less limiting, and if you can commit to the
876: user not using Netscape 4, this feature may be used freely with
877: pretty much any HTML.
878:
879: =cut
880:
881: sub change_content_javascript {
882: # If we're on Netscape 4, we need to use Layer-based code
883: if ($ENV{'browser.type'} eq 'netscape' &&
884: $ENV{'browser.version'} =~ /^4\./) {
885: return (<<NETSCAPE4);
886: function change(name, content) {
887: doc = document.layers[name+"___escape"].layers[0].document;
888: doc.open();
889: doc.write(content);
890: doc.close();
891: }
892: NETSCAPE4
893: } else {
894: # Otherwise, we need to use semi-standards-compliant code
895: # (technically, "innerHTML" isn't standard but the equivalent
896: # is really scary, and every useful browser supports it
897: return (<<DOMBASED);
898: function change(name, content) {
899: element = document.getElementById(name);
900: element.innerHTML = content;
901: }
902: DOMBASED
903: }
904: }
905:
906: =pod
907:
908: =item * changable_area($name, $origContent):
909:
910: This provides a "changable area" that can be modified on the fly via
911: the Javascript code provided in C<change_content_javascript>. $name is
912: the name you will use to reference the area later; do not repeat the
913: same name on a given HTML page more then once. $origContent is what
914: the area will originally contain, which can be left blank.
915:
916: =cut
917:
918: sub changable_area {
919: my ($name, $origContent) = @_;
920:
921: if ($ENV{'browser.type'} eq 'netscape' &&
922: $ENV{'browser.version'} =~ /^4\./) {
923: # If this is netscape 4, we need to use the Layer tag
924: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
925: } else {
926: return "<span id='$name'>$origContent</span>";
927: }
928: }
929:
930: =pod
931:
932: =back
933:
934: =cut
935:
936: ###############################################################
937: ## Home server <option> list generating code ##
938: ###############################################################
939:
940: =pod
941:
942: =head1 Home Server option list generating code
943:
944: =over 4
945:
946: =item * get_domains()
947:
948: Returns an array containing each of the domains listed in the hosts.tab
949: file.
950:
951: =cut
952:
953: #-------------------------------------------
954: sub get_domains {
955: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
956: my @domains;
957: my %seen;
958: foreach (sort values(%Apache::lonnet::hostdom)) {
959: push (@domains,$_) unless $seen{$_}++;
960: }
961: return @domains;
962: }
963:
964: # ------------------------------------------
965:
966: sub domain_select {
967: my ($name,$value,$multiple)=@_;
968: my %domains=map {
969: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
970: } &get_domains;
971: if ($multiple) {
972: $domains{''}=&mt('Any domain');
973: return &multiple_select_form($name,$value,4,%domains);
974: } else {
975: return &select_form($name,$value,%domains);
976: }
977: }
978:
979: sub multiple_select_form {
980: my ($name,$value,$size,%hash)=@_;
981: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
982: my $output='';
983: if (! defined($size)) {
984: $size = 4;
985: if (scalar(keys(%hash))<4) {
986: $size = scalar(keys(%hash));
987: }
988: }
989: $output.="\n<select name='$name' size='$size' multiple='1'>";
990: foreach (sort(keys(%hash))) {
991: $output.='<option value="'.$_.'" ';
992: $output.='selected ' if ($selected{$_});
993: $output.='>'.$hash{$_}."</option>\n";
994: }
995: $output.="</select>\n";
996: return $output;
997: }
998:
999: #-------------------------------------------
1000:
1001: =pod
1002:
1003: =item * select_form($defdom,$name,%hash)
1004:
1005: Returns a string containing a <select name='$name' size='1'> form to
1006: allow a user to select options from a hash option_name => displayed text.
1007: See lonrights.pm for an example invocation and use.
1008:
1009: =cut
1010:
1011: #-------------------------------------------
1012: sub select_form {
1013: my ($def,$name,%hash) = @_;
1014: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1015: my @keys;
1016: if (exists($hash{'select_form_order'})) {
1017: @keys=@{$hash{'select_form_order'}};
1018: } else {
1019: @keys=sort(keys(%hash));
1020: }
1021: foreach (@keys) {
1022: $selectform.="<option value=\"$_\" ".
1023: ($_ eq $def ? 'selected' : '').
1024: ">".&mt($hash{$_})."</option>\n";
1025: }
1026: $selectform.="</select>";
1027: return $selectform;
1028: }
1029:
1030: sub gradeleveldescription {
1031: my $gradelevel=shift;
1032: my %gradelevels=(0 => 'Not specified',
1033: 1 => 'Grade 1',
1034: 2 => 'Grade 2',
1035: 3 => 'Grade 3',
1036: 4 => 'Grade 4',
1037: 5 => 'Grade 5',
1038: 6 => 'Grade 6',
1039: 7 => 'Grade 7',
1040: 8 => 'Grade 8',
1041: 9 => 'Grade 9',
1042: 10 => 'Grade 10',
1043: 11 => 'Grade 11',
1044: 12 => 'Grade 12',
1045: 13 => 'Grade 13',
1046: 14 => '100 Level',
1047: 15 => '200 Level',
1048: 16 => '300 Level',
1049: 17 => '400 Level',
1050: 18 => 'Graduate Level');
1051: return &mt($gradelevels{$gradelevel});
1052: }
1053:
1054: sub select_level_form {
1055: my ($deflevel,$name)=@_;
1056: unless ($deflevel) { $deflevel=0; }
1057: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1058: for (my $i=0; $i<=18; $i++) {
1059: $selectform.="<option value=\"$i\" ".
1060: ($i==$deflevel ? 'selected' : '').
1061: ">".&gradeleveldescription($i)."</option>\n";
1062: }
1063: $selectform.="</select>";
1064: return $selectform;
1065: }
1066:
1067: #-------------------------------------------
1068:
1069: =pod
1070:
1071: =item * select_dom_form($defdom,$name,$includeempty)
1072:
1073: Returns a string containing a <select name='$name' size='1'> form to
1074: allow a user to select the domain to preform an operation in.
1075: See loncreateuser.pm for an example invocation and use.
1076:
1077: If the $includeempty flag is set, it also includes an empty choice ("no domain
1078: selected");
1079:
1080: =cut
1081:
1082: #-------------------------------------------
1083: sub select_dom_form {
1084: my ($defdom,$name,$includeempty) = @_;
1085: my @domains = get_domains();
1086: if ($includeempty) { @domains=('',@domains); }
1087: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1088: foreach (@domains) {
1089: $selectdomain.="<option value=\"$_\" ".
1090: ($_ eq $defdom ? 'selected' : '').
1091: ">$_</option>\n";
1092: }
1093: $selectdomain.="</select>";
1094: return $selectdomain;
1095: }
1096:
1097: #-------------------------------------------
1098:
1099: =pod
1100:
1101: =item * get_library_servers($domain)
1102:
1103: Returns a hash which contains keys like '103l3' and values like
1104: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1105: given $domain.
1106:
1107: =cut
1108:
1109: #-------------------------------------------
1110: sub get_library_servers {
1111: my $domain = shift;
1112: my %library_servers;
1113: foreach (keys(%Apache::lonnet::libserv)) {
1114: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1115: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1116: }
1117: }
1118: return %library_servers;
1119: }
1120:
1121: #-------------------------------------------
1122:
1123: =pod
1124:
1125: =item * home_server_option_list($domain)
1126:
1127: returns a string which contains an <option> list to be used in a
1128: <select> form input. See loncreateuser.pm for an example.
1129:
1130: =cut
1131:
1132: #-------------------------------------------
1133: sub home_server_option_list {
1134: my $domain = shift;
1135: my %servers = &get_library_servers($domain);
1136: my $result = '';
1137: foreach (sort keys(%servers)) {
1138: $result.=
1139: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1140: }
1141: return $result;
1142: }
1143:
1144: =pod
1145:
1146: =back
1147:
1148: =cut
1149:
1150: ###############################################################
1151: ## Decoding User Agent ##
1152: ###############################################################
1153:
1154: =pod
1155:
1156: =head1 Decoding the User Agent
1157:
1158: =over 4
1159:
1160: =item * &decode_user_agent()
1161:
1162: Inputs: $r
1163:
1164: Outputs:
1165:
1166: =over 4
1167:
1168: =item * $httpbrowser
1169:
1170: =item * $clientbrowser
1171:
1172: =item * $clientversion
1173:
1174: =item * $clientmathml
1175:
1176: =item * $clientunicode
1177:
1178: =item * $clientos
1179:
1180: =back
1181:
1182: =back
1183:
1184: =cut
1185:
1186: ###############################################################
1187: ###############################################################
1188: sub decode_user_agent {
1189: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1190: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1191: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1192: my $clientbrowser='unknown';
1193: my $clientversion='0';
1194: my $clientmathml='';
1195: my $clientunicode='0';
1196: for (my $i=0;$i<=$#browsertype;$i++) {
1197: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1198: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1199: $clientbrowser=$bname;
1200: $httpbrowser=~/$vreg/i;
1201: $clientversion=$1;
1202: $clientmathml=($clientversion>=$minv);
1203: $clientunicode=($clientversion>=$univ);
1204: }
1205: }
1206: my $clientos='unknown';
1207: if (($httpbrowser=~/linux/i) ||
1208: ($httpbrowser=~/unix/i) ||
1209: ($httpbrowser=~/ux/i) ||
1210: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1211: if (($httpbrowser=~/vax/i) ||
1212: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1213: if ($httpbrowser=~/next/i) { $clientos='next'; }
1214: if (($httpbrowser=~/mac/i) ||
1215: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1216: if ($httpbrowser=~/win/i) { $clientos='win'; }
1217: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1218: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1219: $clientunicode,$clientos,);
1220: }
1221:
1222: ###############################################################
1223: ## Authentication changing form generation subroutines ##
1224: ###############################################################
1225: ##
1226: ## All of the authform_xxxxxxx subroutines take their inputs in a
1227: ## hash, and have reasonable default values.
1228: ##
1229: ## formname = the name given in the <form> tag.
1230: #-------------------------------------------
1231:
1232: =pod
1233:
1234: =head1 Authentication Routines
1235:
1236: =over 4
1237:
1238: =item * authform_xxxxxx
1239:
1240: The authform_xxxxxx subroutines provide javascript and html forms which
1241: handle some of the conveniences required for authentication forms.
1242: This is not an optimal method, but it works.
1243:
1244: See loncreateuser.pm for invocation and use examples.
1245:
1246: =over 4
1247:
1248: =item * authform_header
1249:
1250: =item * authform_authorwarning
1251:
1252: =item * authform_nochange
1253:
1254: =item * authform_kerberos
1255:
1256: =item * authform_internal
1257:
1258: =item * authform_filesystem
1259:
1260: =back
1261:
1262: =back
1263:
1264: =cut
1265:
1266: #-------------------------------------------
1267: sub authform_header{
1268: my %in = (
1269: formname => 'cu',
1270: kerb_def_dom => '',
1271: @_,
1272: );
1273: $in{'formname'} = 'document.' . $in{'formname'};
1274: my $result='';
1275:
1276: #---------------------------------------------- Code for upper case translation
1277: my $Javascript_toUpperCase;
1278: unless ($in{kerb_def_dom}) {
1279: $Javascript_toUpperCase =<<"END";
1280: switch (choice) {
1281: case 'krb': currentform.elements[choicearg].value =
1282: currentform.elements[choicearg].value.toUpperCase();
1283: break;
1284: default:
1285: }
1286: END
1287: } else {
1288: $Javascript_toUpperCase = "";
1289: }
1290:
1291: my $radioval = "'nochange'";
1292: if (exists($in{'curr_authtype'}) &&
1293: defined($in{'curr_authtype'}) &&
1294: $in{'curr_authtype'} ne '') {
1295: $radioval = "'$in{'curr_authtype'}arg'";
1296: }
1297: my $argfield = 'null';
1298: if ( grep/^mode$/,(keys %in) ) {
1299: if ($in{'mode'} eq 'modifycourse') {
1300: if ( grep/^curr_authtype$/,(keys %in) ) {
1301: $radioval = "'$in{'curr_authtype'}'";
1302: }
1303: if ( grep/^curr_autharg$/,(keys %in) ) {
1304: unless ($in{'curr_autharg'} eq '') {
1305: $argfield = "'$in{'curr_autharg'}'";
1306: }
1307: }
1308: }
1309: }
1310:
1311: $result.=<<"END";
1312: var current = new Object();
1313: current.radiovalue = $radioval;
1314: current.argfield = $argfield;
1315:
1316: function changed_radio(choice,currentform) {
1317: var choicearg = choice + 'arg';
1318: // If a radio button in changed, we need to change the argfield
1319: if (current.radiovalue != choice) {
1320: current.radiovalue = choice;
1321: if (current.argfield != null) {
1322: currentform.elements[current.argfield].value = '';
1323: }
1324: if (choice == 'nochange') {
1325: current.argfield = null;
1326: } else {
1327: current.argfield = choicearg;
1328: switch(choice) {
1329: case 'krb':
1330: currentform.elements[current.argfield].value =
1331: "$in{'kerb_def_dom'}";
1332: break;
1333: default:
1334: break;
1335: }
1336: }
1337: }
1338: return;
1339: }
1340:
1341: function changed_text(choice,currentform) {
1342: var choicearg = choice + 'arg';
1343: if (currentform.elements[choicearg].value !='') {
1344: $Javascript_toUpperCase
1345: // clear old field
1346: if ((current.argfield != choicearg) && (current.argfield != null)) {
1347: currentform.elements[current.argfield].value = '';
1348: }
1349: current.argfield = choicearg;
1350: }
1351: set_auth_radio_buttons(choice,currentform);
1352: return;
1353: }
1354:
1355: function set_auth_radio_buttons(newvalue,currentform) {
1356: var i=0;
1357: while (i < currentform.login.length) {
1358: if (currentform.login[i].value == newvalue) { break; }
1359: i++;
1360: }
1361: if (i == currentform.login.length) {
1362: return;
1363: }
1364: current.radiovalue = newvalue;
1365: currentform.login[i].checked = true;
1366: return;
1367: }
1368: END
1369: return $result;
1370: }
1371:
1372: sub authform_authorwarning{
1373: my $result='';
1374: $result='<i>'.
1375: &mt('As a general rule, only authors or co-authors should be '.
1376: 'filesystem authenticated '.
1377: '(which allows access to the server filesystem).')."</i>\n";
1378: return $result;
1379: }
1380:
1381: sub authform_nochange{
1382: my %in = (
1383: formname => 'document.cu',
1384: kerb_def_dom => 'MSU.EDU',
1385: @_,
1386: );
1387: my $result = &mt('[_1] Do not change login data',
1388: '<input type="radio" name="login" value="nochange" '.
1389: 'checked="checked" onclick="'.
1390: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1391: return $result;
1392: }
1393:
1394: sub authform_kerberos{
1395: my %in = (
1396: formname => 'document.cu',
1397: kerb_def_dom => 'MSU.EDU',
1398: kerb_def_auth => 'krb4',
1399: @_,
1400: );
1401: my ($check4,$check5,$krbarg);
1402: if ($in{'kerb_def_auth'} eq 'krb5') {
1403: $check5 = " checked=\"on\"";
1404: } else {
1405: $check4 = " checked=\"on\"";
1406: }
1407: $krbarg = $in{'kerb_def_dom'};
1408:
1409: my $krbcheck = "";
1410: if ( grep/^curr_authtype$/,(keys %in) ) {
1411: if ($in{'curr_authtype'} =~ m/^krb/) {
1412: $krbcheck = " checked=\"on\"";
1413: if ( grep/^curr_autharg$/,(keys %in) ) {
1414: $krbarg = $in{'curr_autharg'};
1415: }
1416: }
1417: }
1418:
1419: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1420: my $result .= &mt
1421: ('[_1] Kerberos authenticated with domain [_2] '.
1422: '[_3] Version 4 [_4] Version 5',
1423: '<input type="radio" name="login" value="krb" '.
1424: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1425: '<input type="text" size="10" name="krbarg" '.
1426: 'value="'.$krbarg.'" '.
1427: 'onchange="'.$jscall.'" />',
1428: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1429: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1430: return $result;
1431: }
1432:
1433: sub authform_internal{
1434: my %args = (
1435: formname => 'document.cu',
1436: kerb_def_dom => 'MSU.EDU',
1437: @_,
1438: );
1439:
1440: my $intcheck = "";
1441: my $intarg = 'value=""';
1442: if ( grep/^curr_authtype$/,(keys %args) ) {
1443: if ($args{'curr_authtype'} eq 'int') {
1444: $intcheck = " checked=\"on\"";
1445: if ( grep/^curr_autharg$/,(keys %args) ) {
1446: $intarg = "value=\"$args{'curr_autharg'}\"";
1447: }
1448: }
1449: }
1450:
1451: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1452: my $result.=&mt
1453: ('[_1] Internally authenticated (with initial password [_2])',
1454: '<input type="radio" name="login" value="int" '.$intcheck.
1455: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1456: '<input type="text" size="10" name="intarg" '.$intarg.
1457: ' onchange="'.$jscall.'" />');
1458: return $result;
1459: }
1460:
1461: sub authform_local{
1462: my %in = (
1463: formname => 'document.cu',
1464: kerb_def_dom => 'MSU.EDU',
1465: @_,
1466: );
1467:
1468: my $loccheck = "";
1469: my $locarg = 'value=""';
1470: if ( grep/^curr_authtype$/,(keys %in) ) {
1471: if ($in{'curr_authtype'} eq 'loc') {
1472: $loccheck = " checked=\"on\"";
1473: if ( grep/^curr_autharg$/,(keys %in) ) {
1474: $locarg = "value=\"$in{'curr_autharg'}\"";
1475: }
1476: }
1477: }
1478:
1479: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1480: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1481: '<input type="radio" name="login" value="loc" '.$loccheck.
1482: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1483: '<input type="text" size="10" name="locarg" '.$locarg.
1484: ' onchange="'.$jscall.'" />');
1485: return $result;
1486: }
1487:
1488: sub authform_filesystem{
1489: my %in = (
1490: formname => 'document.cu',
1491: kerb_def_dom => 'MSU.EDU',
1492: @_,
1493: );
1494: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1495: my $result.= &mt
1496: ('[_1] Filesystem Authenticated (with initial password [_2])',
1497: '<input type="radio" name="login" value="fsys" '.
1498: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1499: '<input type="text" size="10" name="fsysarg" value="" '.
1500: 'onchange="'.$jscall.'" />');
1501: return $result;
1502: }
1503:
1504: ###############################################################
1505: ## Get Authentication Defaults for Domain ##
1506: ###############################################################
1507:
1508: =pod
1509:
1510: =head1 Domains and Authentication
1511:
1512: Returns default authentication type and an associated argument as
1513: listed in file 'domain.tab'.
1514:
1515: =over 4
1516:
1517: =item * get_auth_defaults
1518:
1519: get_auth_defaults($target_domain) returns the default authentication
1520: type and an associated argument (initial password or a kerberos domain).
1521: These values are stored in lonTabs/domain.tab
1522:
1523: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1524:
1525: If target_domain is not found in domain.tab, returns nothing ('').
1526:
1527: =cut
1528:
1529: #-------------------------------------------
1530: sub get_auth_defaults {
1531: my $domain=shift;
1532: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1533: }
1534: ###############################################################
1535: ## End Get Authentication Defaults for Domain ##
1536: ###############################################################
1537:
1538: ###############################################################
1539: ## Get Kerberos Defaults for Domain ##
1540: ###############################################################
1541: ##
1542: ## Returns default kerberos version and an associated argument
1543: ## as listed in file domain.tab. If not listed, provides
1544: ## appropriate default domain and kerberos version.
1545: ##
1546: #-------------------------------------------
1547:
1548: =pod
1549:
1550: =item * get_kerberos_defaults
1551:
1552: get_kerberos_defaults($target_domain) returns the default kerberos
1553: version and domain. If not found in domain.tabs, it defaults to
1554: version 4 and the domain of the server.
1555:
1556: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1557:
1558: =cut
1559:
1560: #-------------------------------------------
1561: sub get_kerberos_defaults {
1562: my $domain=shift;
1563: my ($krbdef,$krbdefdom) =
1564: &Apache::loncommon::get_auth_defaults($domain);
1565: unless ($krbdef =~/^krb/ && $krbdefdom) {
1566: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1567: my $krbdefdom=$1;
1568: $krbdefdom=~tr/a-z/A-Z/;
1569: $krbdef = "krb4";
1570: }
1571: return ($krbdef,$krbdefdom);
1572: }
1573:
1574: =pod
1575:
1576: =back
1577:
1578: =cut
1579:
1580: ###############################################################
1581: ## Thesaurus Functions ##
1582: ###############################################################
1583:
1584: =pod
1585:
1586: =head1 Thesaurus Functions
1587:
1588: =over 4
1589:
1590: =item * initialize_keywords
1591:
1592: Initializes the package variable %Keywords if it is empty. Uses the
1593: package variable $thesaurus_db_file.
1594:
1595: =cut
1596:
1597: ###################################################
1598:
1599: sub initialize_keywords {
1600: return 1 if (scalar keys(%Keywords));
1601: # If we are here, %Keywords is empty, so fill it up
1602: # Make sure the file we need exists...
1603: if (! -e $thesaurus_db_file) {
1604: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1605: " failed because it does not exist");
1606: return 0;
1607: }
1608: # Set up the hash as a database
1609: my %thesaurus_db;
1610: if (! tie(%thesaurus_db,'GDBM_File',
1611: $thesaurus_db_file,&GDBM_READER(),0640)){
1612: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1613: $thesaurus_db_file);
1614: return 0;
1615: }
1616: # Get the average number of appearances of a word.
1617: my $avecount = $thesaurus_db{'average.count'};
1618: # Put keywords (those that appear > average) into %Keywords
1619: while (my ($word,$data)=each (%thesaurus_db)) {
1620: my ($count,undef) = split /:/,$data;
1621: $Keywords{$word}++ if ($count > $avecount);
1622: }
1623: untie %thesaurus_db;
1624: # Remove special values from %Keywords.
1625: foreach ('total.count','average.count') {
1626: delete($Keywords{$_}) if (exists($Keywords{$_}));
1627: }
1628: return 1;
1629: }
1630:
1631: ###################################################
1632:
1633: =pod
1634:
1635: =item * keyword($word)
1636:
1637: Returns true if $word is a keyword. A keyword is a word that appears more
1638: than the average number of times in the thesaurus database. Calls
1639: &initialize_keywords
1640:
1641: =cut
1642:
1643: ###################################################
1644:
1645: sub keyword {
1646: return if (!&initialize_keywords());
1647: my $word=lc(shift());
1648: $word=~s/\W//g;
1649: return exists($Keywords{$word});
1650: }
1651:
1652: ###############################################################
1653:
1654: =pod
1655:
1656: =item * get_related_words
1657:
1658: Look up a word in the thesaurus. Takes a scalar argument and returns
1659: an array of words. If the keyword is not in the thesaurus, an empty array
1660: will be returned. The order of the words returned is determined by the
1661: database which holds them.
1662:
1663: Uses global $thesaurus_db_file.
1664:
1665: =cut
1666:
1667: ###############################################################
1668: sub get_related_words {
1669: my $keyword = shift;
1670: my %thesaurus_db;
1671: if (! -e $thesaurus_db_file) {
1672: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1673: "failed because the file does not exist");
1674: return ();
1675: }
1676: if (! tie(%thesaurus_db,'GDBM_File',
1677: $thesaurus_db_file,&GDBM_READER(),0640)){
1678: return ();
1679: }
1680: my @Words=();
1681: if (exists($thesaurus_db{$keyword})) {
1682: $_ = $thesaurus_db{$keyword};
1683: (undef,@Words) = split/:/; # The first element is the number of times
1684: # the word appears. We do not need it now.
1685: for (my $i=0;$i<=$#Words;$i++) {
1686: ($Words[$i],undef)= split/\,/,$Words[$i];
1687: }
1688: }
1689: untie %thesaurus_db;
1690: return @Words;
1691: }
1692:
1693: =pod
1694:
1695: =back
1696:
1697: =cut
1698:
1699: # -------------------------------------------------------------- Plaintext name
1700: =pod
1701:
1702: =head1 User Name Functions
1703:
1704: =over 4
1705:
1706: =item * plainname($uname,$udom)
1707:
1708: Takes a users logon name and returns it as a string in
1709: "first middle last generation" form
1710:
1711: =cut
1712:
1713: ###############################################################
1714: sub plainname {
1715: my ($uname,$udom)=@_;
1716: my %names=&Apache::lonnet::get('environment',
1717: ['firstname','middlename','lastname','generation'],
1718: $udom,$uname);
1719: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1720: $names{'lastname'}.' '.$names{'generation'};
1721: $name=~s/\s+$//;
1722: $name=~s/\s+/ /g;
1723: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1724: return $name;
1725: }
1726:
1727: # -------------------------------------------------------------------- Nickname
1728: =pod
1729:
1730: =item * nickname($uname,$udom)
1731:
1732: Gets a users name and returns it as a string as
1733:
1734: ""nickname""
1735:
1736: if the user has a nickname or
1737:
1738: "first middle last generation"
1739:
1740: if the user does not
1741:
1742: =cut
1743:
1744: sub nickname {
1745: my ($uname,$udom)=@_;
1746: my %names=&Apache::lonnet::get('environment',
1747: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1748: my $name=$names{'nickname'};
1749: if ($name) {
1750: $name='"'.$name.'"';
1751: } else {
1752: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1753: $names{'lastname'}.' '.$names{'generation'};
1754: $name=~s/\s+$//;
1755: $name=~s/\s+/ /g;
1756: }
1757: return $name;
1758: }
1759:
1760:
1761: # ------------------------------------------------------------------ Screenname
1762:
1763: =pod
1764:
1765: =item * screenname($uname,$udom)
1766:
1767: Gets a users screenname and returns it as a string
1768:
1769: =cut
1770:
1771: sub screenname {
1772: my ($uname,$udom)=@_;
1773: my %names=
1774: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1775: return $names{'screenname'};
1776: }
1777:
1778: # ------------------------------------------------------------- Message Wrapper
1779:
1780: sub messagewrapper {
1781: my ($link,$un,$do)=@_;
1782: return
1783: "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
1784: }
1785: # --------------------------------------------------------------- Notes Wrapper
1786:
1787: sub noteswrapper {
1788: my ($link,$un,$do)=@_;
1789: return
1790: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1791: }
1792: # ------------------------------------------------------------- Aboutme Wrapper
1793:
1794: sub aboutmewrapper {
1795: my ($link,$username,$domain,$target)=@_;
1796: return "<a href='/adm/$domain/$username/aboutme'".
1797: ($target?" target='$target'":'').">$link</a>";
1798: }
1799:
1800: # ------------------------------------------------------------ Syllabus Wrapper
1801:
1802:
1803: sub syllabuswrapper {
1804: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1805: if ($fontcolor) {
1806: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1807: }
1808: return "<a href='/public/$domain/$coursedir/syllabus'>$linktext</a>";
1809: }
1810:
1811: =pod
1812:
1813: =back
1814:
1815: =head1 Access .tab File Data
1816:
1817: =over 4
1818:
1819: =item * languageids()
1820:
1821: returns list of all language ids
1822:
1823: =cut
1824:
1825: sub languageids {
1826: return sort(keys(%language));
1827: }
1828:
1829: =pod
1830:
1831: =item * languagedescription()
1832:
1833: returns description of a specified language id
1834:
1835: =cut
1836:
1837: sub languagedescription {
1838: my $code=shift;
1839: return ($supported_language{$code}?'* ':'').
1840: $language{$code}.
1841: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1842: }
1843:
1844: sub plainlanguagedescription {
1845: my $code=shift;
1846: return $language{$code};
1847: }
1848:
1849: sub supportedlanguagecode {
1850: my $code=shift;
1851: return $supported_language{$code};
1852: }
1853:
1854: =pod
1855:
1856: =item * copyrightids()
1857:
1858: returns list of all copyrights
1859:
1860: =cut
1861:
1862: sub copyrightids {
1863: return sort(keys(%cprtag));
1864: }
1865:
1866: =pod
1867:
1868: =item * copyrightdescription()
1869:
1870: returns description of a specified copyright id
1871:
1872: =cut
1873:
1874: sub copyrightdescription {
1875: return &mt($cprtag{shift(@_)});
1876: }
1877: =item * source_copyrightids()
1878:
1879: returns list of all source copyrights
1880:
1881: =cut
1882:
1883: sub source_copyrightids {
1884: return sort(keys(%scprtag));
1885: }
1886:
1887: =pod
1888:
1889: =item * source_copyrightdescription()
1890:
1891: returns description of a specified source copyright id
1892:
1893: =cut
1894:
1895: sub source_copyrightdescription {
1896: return &mt($scprtag{shift(@_)});
1897: }
1898:
1899: =pod
1900:
1901: =item * filecategories()
1902:
1903: returns list of all file categories
1904:
1905: =cut
1906:
1907: sub filecategories {
1908: return sort(keys(%category_extensions));
1909: }
1910:
1911: =pod
1912:
1913: =item * filecategorytypes()
1914:
1915: returns list of file types belonging to a given file
1916: category
1917:
1918: =cut
1919:
1920: sub filecategorytypes {
1921: return @{$category_extensions{lc($_[0])}};
1922: }
1923:
1924: =pod
1925:
1926: =item * fileembstyle()
1927:
1928: returns embedding style for a specified file type
1929:
1930: =cut
1931:
1932: sub fileembstyle {
1933: return $fe{lc(shift(@_))};
1934: }
1935:
1936:
1937: sub filecategoryselect {
1938: my ($name,$value)=@_;
1939: return &select_form($value,$name,
1940: '' => &mt('Any category'),
1941: map { $_,$_ } sort(keys(%category_extensions)));
1942: }
1943:
1944: =pod
1945:
1946: =item * filedescription()
1947:
1948: returns description for a specified file type
1949:
1950: =cut
1951:
1952: sub filedescription {
1953: my $file_description = $fd{lc(shift())};
1954: $file_description =~ s:([\[\]]):~$1:g;
1955: return &mt($file_description);
1956: }
1957:
1958: =pod
1959:
1960: =item * filedescriptionex()
1961:
1962: returns description for a specified file type with
1963: extra formatting
1964:
1965: =cut
1966:
1967: sub filedescriptionex {
1968: my $ex=shift;
1969: my $file_description = $fd{lc($ex)};
1970: $file_description =~ s:([\[\]]):~$1:g;
1971: return '.'.$ex.' '.&mt($file_description);
1972: }
1973:
1974: # End of .tab access
1975: =pod
1976:
1977: =back
1978:
1979: =cut
1980:
1981: # ------------------------------------------------------------------ File Types
1982: sub fileextensions {
1983: return sort(keys(%fe));
1984: }
1985:
1986: # ----------------------------------------------------------- Display Languages
1987: # returns a hash with all desired display languages
1988: #
1989:
1990: sub display_languages {
1991: my %languages=();
1992: foreach (&preferred_languages()) {
1993: $languages{$_}=1;
1994: }
1995: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1996: if ($ENV{'form.displaylanguage'}) {
1997: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
1998: $languages{$_}=1;
1999: }
2000: }
2001: return %languages;
2002: }
2003:
2004: sub preferred_languages {
2005: my @languages=();
2006: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2007: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2008: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2009: }
2010: if ($ENV{'environment.languages'}) {
2011: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2012: }
2013: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2014: if ($browser) {
2015: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2016: }
2017: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2018: @languages=(@languages,
2019: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2020: }
2021: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2022: @languages=(@languages,
2023: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2024: }
2025: if ($Apache::lonnet::domain_lang_def{
2026: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2027: @languages=(@languages,
2028: $Apache::lonnet::domain_lang_def{
2029: $Apache::lonnet::perlvar{'lonDefDomain'}});
2030: }
2031: # turn "en-ca" into "en-ca,en"
2032: my @genlanguages;
2033: foreach (@languages) {
2034: unless ($_=~/\w/) { next; }
2035: push (@genlanguages,$_);
2036: if ($_=~/(\-|\_)/) {
2037: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2038: }
2039: }
2040: return @genlanguages;
2041: }
2042:
2043: ###############################################################
2044: ## Student Answer Attempts ##
2045: ###############################################################
2046:
2047: =pod
2048:
2049: =head1 Alternate Problem Views
2050:
2051: =over 4
2052:
2053: =item * get_previous_attempt($symb, $username, $domain, $course,
2054: $getattempt, $regexp, $gradesub)
2055:
2056: Return string with previous attempt on problem. Arguments:
2057:
2058: =over 4
2059:
2060: =item * $symb: Problem, including path
2061:
2062: =item * $username: username of the desired student
2063:
2064: =item * $domain: domain of the desired student
2065:
2066: =item * $course: Course ID
2067:
2068: =item * $getattempt: Leave blank for all attempts, otherwise put
2069: something
2070:
2071: =item * $regexp: if string matches this regexp, the string will be
2072: sent to $gradesub
2073:
2074: =item * $gradesub: routine that processes the string if it matches $regexp
2075:
2076: =back
2077:
2078: The output string is a table containing all desired attempts, if any.
2079:
2080: =cut
2081:
2082: sub get_previous_attempt {
2083: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2084: my $prevattempts='';
2085: no strict 'refs';
2086: if ($symb) {
2087: my (%returnhash)=
2088: &Apache::lonnet::restore($symb,$course,$domain,$username);
2089: if ($returnhash{'version'}) {
2090: my %lasthash=();
2091: my $version;
2092: for ($version=1;$version<=$returnhash{'version'};$version++) {
2093: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2094: $lasthash{$_}=$returnhash{$version.':'.$_};
2095: }
2096: }
2097: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2098: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2099: foreach (sort(keys %lasthash)) {
2100: my ($ign,@parts) = split(/\./,$_);
2101: if ($#parts > 0) {
2102: my $data=$parts[-1];
2103: pop(@parts);
2104: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2105: } else {
2106: if ($#parts == 0) {
2107: $prevattempts.='<th>'.$parts[0].'</th>';
2108: } else {
2109: $prevattempts.='<th>'.$ign.'</th>';
2110: }
2111: }
2112: }
2113: if ($getattempt eq '') {
2114: for ($version=1;$version<=$returnhash{'version'};$version++) {
2115: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2116: foreach (sort(keys %lasthash)) {
2117: my $value;
2118: if ($_ =~ /timestamp/) {
2119: $value=scalar(localtime($returnhash{$version.':'.$_}));
2120: } else {
2121: $value=$returnhash{$version.':'.$_};
2122: }
2123: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2124: }
2125: }
2126: }
2127: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2128: foreach (sort(keys %lasthash)) {
2129: my $value;
2130: if ($_ =~ /timestamp/) {
2131: $value=scalar(localtime($lasthash{$_}));
2132: } else {
2133: $value=$lasthash{$_};
2134: }
2135: $value=&Apache::lonnet::unescape($value);
2136: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2137: $prevattempts.='<td>'.$value.' </td>';
2138: }
2139: $prevattempts.='</tr></table></td></tr></table>';
2140: } else {
2141: $prevattempts='Nothing submitted - no attempts.';
2142: }
2143: } else {
2144: $prevattempts='No data.';
2145: }
2146: }
2147:
2148: sub relative_to_absolute {
2149: my ($url,$output)=@_;
2150: my $parser=HTML::TokeParser->new(\$output);
2151: my $token;
2152: my $thisdir=$url;
2153: my @rlinks=();
2154: while ($token=$parser->get_token) {
2155: if ($token->[0] eq 'S') {
2156: if ($token->[1] eq 'a') {
2157: if ($token->[2]->{'href'}) {
2158: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2159: }
2160: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2161: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2162: } elsif ($token->[1] eq 'base') {
2163: $thisdir=$token->[2]->{'href'};
2164: }
2165: }
2166: }
2167: $thisdir=~s-/[^/]*$--;
2168: foreach (@rlinks) {
2169: unless (($_=~/^http:\/\//i) ||
2170: ($_=~/^\//) ||
2171: ($_=~/^javascript:/i) ||
2172: ($_=~/^mailto:/i) ||
2173: ($_=~/^\#/)) {
2174: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2175: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2176: }
2177: }
2178: # -------------------------------------------------- Deal with Applet codebases
2179: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2180: return $output;
2181: }
2182:
2183: =pod
2184:
2185: =item * get_student_view
2186:
2187: show a snapshot of what student was looking at
2188:
2189: =cut
2190:
2191: sub get_student_view {
2192: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2193: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2194: my (%form);
2195: my @elements=('symb','courseid','domain','username');
2196: foreach my $element (@elements) {
2197: $form{'grade_'.$element}=eval '$'.$element #'
2198: }
2199: if (defined($moreenv)) {
2200: %form=(%form,%{$moreenv});
2201: }
2202: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2203: $feedurl=&Apache::lonnet::clutter($feedurl);
2204: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2205: $userview=~s/\<body[^\>]*\>//gi;
2206: $userview=~s/\<\/body\>//gi;
2207: $userview=~s/\<html\>//gi;
2208: $userview=~s/\<\/html\>//gi;
2209: $userview=~s/\<head\>//gi;
2210: $userview=~s/\<\/head\>//gi;
2211: $userview=~s/action\s*\=/would_be_action\=/gi;
2212: $userview=&relative_to_absolute($feedurl,$userview);
2213: return $userview;
2214: }
2215:
2216: =pod
2217:
2218: =item * get_student_answers()
2219:
2220: show a snapshot of how student was answering problem
2221:
2222: =cut
2223:
2224: sub get_student_answers {
2225: my ($symb,$username,$domain,$courseid,%form) = @_;
2226: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2227: my (%moreenv);
2228: my @elements=('symb','courseid','domain','username');
2229: foreach my $element (@elements) {
2230: $moreenv{'grade_'.$element}=eval '$'.$element #'
2231: }
2232: $moreenv{'grade_target'}='answer';
2233: %moreenv=(%form,%moreenv);
2234: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2235: return $userview;
2236: }
2237:
2238: =pod
2239:
2240: =item * &submlink()
2241:
2242: Inputs: $text $uname $udom $symb
2243:
2244: Returns: A link to grades.pm such as to see the SUBM view of a student
2245:
2246: =cut
2247:
2248: ###############################################
2249: sub submlink {
2250: my ($text,$uname,$udom,$symb)=@_;
2251: if (!($uname && $udom)) {
2252: (my $cursymb, my $courseid,$udom,$uname)=
2253: &Apache::lonxml::whichuser($symb);
2254: if (!$symb) { $symb=$cursymb; }
2255: }
2256: if (!$symb) { $symb=&symbread(); }
2257: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2258: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2259: }
2260: ##############################################
2261:
2262: =pod
2263:
2264: =back
2265:
2266: =cut
2267:
2268: ###############################################
2269:
2270:
2271: sub timehash {
2272: my @ltime=localtime(shift);
2273: return ( 'seconds' => $ltime[0],
2274: 'minutes' => $ltime[1],
2275: 'hours' => $ltime[2],
2276: 'day' => $ltime[3],
2277: 'month' => $ltime[4]+1,
2278: 'year' => $ltime[5]+1900,
2279: 'weekday' => $ltime[6],
2280: 'dayyear' => $ltime[7]+1,
2281: 'dlsav' => $ltime[8] );
2282: }
2283:
2284: sub maketime {
2285: my %th=@_;
2286: return POSIX::mktime(
2287: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2288: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
2289: }
2290:
2291: #########################################
2292:
2293: sub findallcourses {
2294: my %courses=();
2295: my $now=time;
2296: foreach (keys %ENV) {
2297: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2298: my ($starttime,$endtime)=$ENV{$_};
2299: my $active=1;
2300: if ($starttime) {
2301: if ($now<$starttime) { $active=0; }
2302: }
2303: if ($endtime) {
2304: if ($now>$endtime) { $active=0; }
2305: }
2306: if ($active) { $courses{$1.'_'.$2}=1; }
2307: }
2308: }
2309: return keys %courses;
2310: }
2311:
2312: ###############################################
2313: ###############################################
2314:
2315: =pod
2316:
2317: =head1 Domain Template Functions
2318:
2319: =over 4
2320:
2321: =item * &determinedomain()
2322:
2323: Inputs: $domain (usually will be undef)
2324:
2325: Returns: Determines which domain should be used for designs
2326:
2327: =cut
2328:
2329: ###############################################
2330: sub determinedomain {
2331: my $domain=shift;
2332: if (! $domain) {
2333: # Determine domain if we have not been given one
2334: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2335: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2336: if ($ENV{'request.role.domain'}) {
2337: $domain=$ENV{'request.role.domain'};
2338: }
2339: }
2340: return $domain;
2341: }
2342: ###############################################
2343: =pod
2344:
2345: =item * &domainlogo()
2346:
2347: Inputs: $domain (usually will be undef)
2348:
2349: Returns: A link to a domain logo, if the domain logo exists.
2350: If the domain logo does not exist, a description of the domain.
2351:
2352: =cut
2353:
2354: ###############################################
2355: sub domainlogo {
2356: my $domain = &determinedomain(shift);
2357: # See if there is a logo
2358: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2359: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2360: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2361: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
2362: '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
2363: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2364: return $Apache::lonnet::domaindescription{$domain};
2365: } else {
2366: return '';
2367: }
2368: }
2369: ##############################################
2370:
2371: =pod
2372:
2373: =item * &designparm()
2374:
2375: Inputs: $which parameter; $domain (usually will be undef)
2376:
2377: Returns: value of designparamter $which
2378:
2379: =cut
2380:
2381: ##############################################
2382: sub designparm {
2383: my ($which,$domain)=@_;
2384: if ($ENV{'browser.blackwhite'} eq 'on') {
2385: if ($which=~/\.(font|alink|vlink|link)$/) {
2386: return '#000000';
2387: }
2388: if ($which=~/\.(pgbg|sidebg)$/) {
2389: return '#FFFFFF';
2390: }
2391: if ($which=~/\.tabbg$/) {
2392: return '#CCCCCC';
2393: }
2394: }
2395: if ($ENV{'environment.color.'.$which}) {
2396: return $ENV{'environment.color.'.$which};
2397: }
2398: $domain=&determinedomain($domain);
2399: if ($designhash{$domain.'.'.$which}) {
2400: return $designhash{$domain.'.'.$which};
2401: } else {
2402: return $designhash{'default.'.$which};
2403: }
2404: }
2405:
2406: ###############################################
2407: ###############################################
2408:
2409: =pod
2410:
2411: =back
2412:
2413: =head1 HTTP Helpers
2414:
2415: =over 4
2416:
2417: =item * &bodytag()
2418:
2419: Returns a uniform header for LON-CAPA web pages.
2420:
2421: Inputs:
2422:
2423: =over 4
2424:
2425: =item * $title, A title to be displayed on the page.
2426:
2427: =item * $function, the current role (can be undef).
2428:
2429: =item * $addentries, extra parameters for the <body> tag.
2430:
2431: =item * $bodyonly, if defined, only return the <body> tag.
2432:
2433: =item * $domain, if defined, force a given domain.
2434:
2435: =item * $forcereg, if page should register as content page (relevant for
2436: text interface only)
2437:
2438: =back
2439:
2440: Returns: A uniform header for LON-CAPA web pages.
2441: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2442: If $bodyonly is undef or zero, an html string containing a <body> tag and
2443: other decorations will be returned.
2444:
2445: =cut
2446:
2447: sub bodytag {
2448: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2449: $title=&mt($title);
2450: $function = &get_users_function() if (!$function);
2451: my $img=&designparm($function.'.img',$domain);
2452: my $pgbg=&designparm($function.'.pgbg',$domain);
2453: my $tabbg=&designparm($function.'.tabbg',$domain);
2454: my $font=&designparm($function.'.font',$domain);
2455: my $link=&designparm($function.'.link',$domain);
2456: my $alink=&designparm($function.'.alink',$domain);
2457: my $vlink=&designparm($function.'.vlink',$domain);
2458: my $sidebg=&designparm($function.'.sidebg',$domain);
2459: # Accessibility font enhance
2460: unless ($addentries) { $addentries=''; }
2461: my $addstyle='';
2462: if ($ENV{'browser.fontenhance'} eq 'on') {
2463: $addstyle=' font-size: x-large;';
2464: }
2465: # role and realm
2466: my ($role,$realm)
2467: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2468: # realm
2469: if ($ENV{'request.course.id'}) {
2470: $realm=
2471: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2472: }
2473: unless ($realm) { $realm=' '; }
2474: # Set messages
2475: my $messages=&domainlogo($domain);
2476: # Port for miniserver
2477: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2478: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2479: # construct main body tag
2480: my $bodytag = <<END;
2481: <style>
2482: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2483: a:focus { color: red; background: yellow }
2484: </style>
2485: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2486: style="margin-top: 0px;$addstyle" $addentries>
2487: END
2488: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2489: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2490: if ($bodyonly) {
2491: return $bodytag;
2492: } elsif ($ENV{'browser.interface'} eq 'textual') {
2493: # Accessibility
2494: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2495: $forcereg).
2496: '<h1>LON-CAPA: '.$title.'</h1>';
2497: } elsif ($ENV{'environment.remote'} eq 'off') {
2498: # No Remote
2499: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2500: $forcereg).
2501: '<table bgcolor="'.$pgbg.'" width="100%" border="0" cellspacing="3" cellpadding="3"><tr><td bgcolor="'.$tabbg.'"><font face="Arial, Helvetica, sans-serif" size="+3" color="'.$font.'"><b>'.$title.
2502: '</b></font></td></tr></table>';
2503: }
2504:
2505: #
2506: # Top frame rendering, Remote is up
2507: #
2508: return(<<ENDBODY);
2509: $bodytag
2510: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2511: <tr><td bgcolor="$sidebg">
2512: $upperleft</td>
2513: <td bgcolor="$sidebg" align="right">$messages </td>
2514: </tr>
2515: <tr>
2516: <td rowspan="3" bgcolor="$tabbg">
2517: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2518: <td bgcolor="$tabbg" align="right">
2519: <font size="2" face="Arial, Helvetica, sans-serif">
2520: $ENV{'environment.firstname'}
2521: $ENV{'environment.middlename'}
2522: $ENV{'environment.lastname'}
2523: $ENV{'environment.generation'}
2524: </font>
2525: </td>
2526: </tr>
2527: <tr><td bgcolor="$tabbg" align="right">
2528: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2529: </td></tr>
2530: <tr>
2531: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2532: </table><br>
2533: ENDBODY
2534: }
2535:
2536: ###############################################
2537:
2538: =pod
2539:
2540: =item get_users_function
2541:
2542: Used by &bodytag to determine the current users primary role.
2543: Returns either 'student','coordinator','admin', or 'author'.
2544:
2545: =cut
2546:
2547: ###############################################
2548: sub get_users_function {
2549: my $function = 'student';
2550: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2551: $function='coordinator';
2552: }
2553: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2554: $function='admin';
2555: }
2556: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2557: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2558: $function='author';
2559: }
2560: return $function;
2561: }
2562:
2563: ###############################################
2564:
2565: sub get_posted_cgi {
2566: my $r=shift;
2567:
2568: my $buffer;
2569:
2570: $r->read($buffer,$r->header_in('Content-length'),0);
2571: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2572: my @pairs=split(/&/,$buffer);
2573: my $pair;
2574: foreach $pair (@pairs) {
2575: my ($name,$value) = split(/=/,$pair);
2576: $value =~ tr/+/ /;
2577: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2578: $name =~ tr/+/ /;
2579: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2580: &add_to_env("form.$name",$value);
2581: }
2582: } else {
2583: my $contentsep=$1;
2584: my @lines = split (/\n/,$buffer);
2585: my $name='';
2586: my $value='';
2587: my $fname='';
2588: my $fmime='';
2589: my $i;
2590: for ($i=0;$i<=$#lines;$i++) {
2591: if ($lines[$i]=~/^$contentsep/) {
2592: if ($name) {
2593: chomp($value);
2594: if ($fname) {
2595: $ENV{"form.$name.filename"}=$fname;
2596: $ENV{"form.$name.mimetype"}=$fmime;
2597: } else {
2598: $value=~s/\s+$//s;
2599: }
2600: &add_to_env("form.$name",$value);
2601: }
2602: if ($i<$#lines) {
2603: $i++;
2604: $lines[$i]=~
2605: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2606: $name=$1;
2607: $value='';
2608: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2609: $fname=$1;
2610: if
2611: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2612: $fmime=$1;
2613: $i++;
2614: } else {
2615: $fmime='';
2616: }
2617: } else {
2618: $fname='';
2619: $fmime='';
2620: }
2621: $i++;
2622: }
2623: } else {
2624: $value.=$lines[$i]."\n";
2625: }
2626: }
2627: }
2628: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2629: $r->method_number(M_GET);
2630: $r->method('GET');
2631: $r->headers_in->unset('Content-length');
2632: }
2633:
2634: =pod
2635:
2636: =item * get_unprocessed_cgi($query,$possible_names)
2637:
2638: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2639: $query. The parameters listed in $possible_names (an array reference),
2640: will be set in $ENV{'form.name'} if they do not already exist.
2641:
2642: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2643: $possible_names is an ref to an array of form element names. As an example:
2644: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2645: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2646:
2647: =cut
2648:
2649: sub get_unprocessed_cgi {
2650: my ($query,$possible_names)= @_;
2651: # $Apache::lonxml::debug=1;
2652: foreach (split(/&/,$query)) {
2653: my ($name, $value) = split(/=/,$_);
2654: $name = &Apache::lonnet::unescape($name);
2655: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2656: $value =~ tr/+/ /;
2657: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2658: &Apache::lonxml::debug("Seting :$name: to :$value:");
2659: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2660: }
2661: }
2662: }
2663:
2664: =pod
2665:
2666: =item * cacheheader()
2667:
2668: returns cache-controlling header code
2669:
2670: =cut
2671:
2672: sub cacheheader {
2673: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2674: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2675: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2676: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2677: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2678: return $output;
2679: }
2680:
2681: =pod
2682:
2683: =item * no_cache($r)
2684:
2685: specifies header code to not have cache
2686:
2687: =cut
2688:
2689: sub no_cache {
2690: my ($r) = @_;
2691: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2692: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2693: $r->no_cache(1);
2694: $r->header_out("Pragma" => "no-cache");
2695: #$r->header_out("Expires" => $date);
2696: }
2697:
2698: sub content_type {
2699: my ($r,$type,$charset) = @_;
2700: unless ($charset) {
2701: $charset=&Apache::lonlocal::current_encoding;
2702: }
2703: if ($charset) { $type.='; charset='.$charset; }
2704: if ($r) {
2705: $r->content_type($type);
2706: } else {
2707: print("Content-type: $type\n\n");
2708: }
2709: }
2710:
2711: =pod
2712:
2713: =item * add_to_env($name,$value)
2714:
2715: adds $name to the %ENV hash with value
2716: $value, if $name already exists, the entry is converted to an array
2717: reference and $value is added to the array.
2718:
2719: =cut
2720:
2721: sub add_to_env {
2722: my ($name,$value)=@_;
2723: if (defined($ENV{$name})) {
2724: if (ref($ENV{$name})) {
2725: #already have multiple values
2726: push(@{ $ENV{$name} },$value);
2727: } else {
2728: #first time seeing multiple values, convert hash entry to an arrayref
2729: my $first=$ENV{$name};
2730: undef($ENV{$name});
2731: push(@{ $ENV{$name} },$first,$value);
2732: }
2733: } else {
2734: $ENV{$name}=$value;
2735: }
2736: }
2737:
2738: =pod
2739:
2740: =item * get_env_multiple($name)
2741:
2742: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2743: values may be defined and end up as an array ref.
2744:
2745: returns an array of values
2746:
2747: =cut
2748:
2749: sub get_env_multiple {
2750: my ($name) = @_;
2751: my @values;
2752: if (defined($ENV{$name})) {
2753: # exists is it an array
2754: if (ref($ENV{$name})) {
2755: @values=@{ $ENV{$name} };
2756: } else {
2757: $values[0]=$ENV{$name};
2758: }
2759: }
2760: return(@values);
2761: }
2762:
2763:
2764: =pod
2765:
2766: =back
2767:
2768: =head1 CSV Upload/Handling functions
2769:
2770: =over 4
2771:
2772: =item * upfile_store($r)
2773:
2774: Store uploaded file, $r should be the HTTP Request object,
2775: needs $ENV{'form.upfile'}
2776: returns $datatoken to be put into hidden field
2777:
2778: =cut
2779:
2780: sub upfile_store {
2781: my $r=shift;
2782: $ENV{'form.upfile'}=~s/\r/\n/gs;
2783: $ENV{'form.upfile'}=~s/\f/\n/gs;
2784: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2785: $ENV{'form.upfile'}=~s/\n+$//gs;
2786:
2787: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2788: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2789: {
2790: my $datafile = $r->dir_config('lonDaemons').
2791: '/tmp/'.$datatoken.'.tmp';
2792: if ( open(my $fh,">$datafile") ) {
2793: print $fh $ENV{'form.upfile'};
2794: close($fh);
2795: }
2796: }
2797: return $datatoken;
2798: }
2799:
2800: =pod
2801:
2802: =item * load_tmp_file($r)
2803:
2804: Load uploaded file from tmp, $r should be the HTTP Request object,
2805: needs $ENV{'form.datatoken'},
2806: sets $ENV{'form.upfile'} to the contents of the file
2807:
2808: =cut
2809:
2810: sub load_tmp_file {
2811: my $r=shift;
2812: my @studentdata=();
2813: {
2814: my $studentfile = $r->dir_config('lonDaemons').
2815: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2816: if ( open(my $fh,"<$studentfile") ) {
2817: @studentdata=<$fh>;
2818: close($fh);
2819: }
2820: }
2821: $ENV{'form.upfile'}=join('',@studentdata);
2822: }
2823:
2824: =pod
2825:
2826: =item * upfile_record_sep()
2827:
2828: Separate uploaded file into records
2829: returns array of records,
2830: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2831:
2832: =cut
2833:
2834: sub upfile_record_sep {
2835: if ($ENV{'form.upfiletype'} eq 'xml') {
2836: } else {
2837: return split(/\n/,$ENV{'form.upfile'});
2838: }
2839: }
2840:
2841: =pod
2842:
2843: =item * record_sep($record)
2844:
2845: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2846:
2847: =cut
2848:
2849: sub record_sep {
2850: my $record=shift;
2851: my %components=();
2852: if ($ENV{'form.upfiletype'} eq 'xml') {
2853: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2854: my $i=0;
2855: foreach (split(/\s+/,$record)) {
2856: my $field=$_;
2857: $field=~s/^(\"|\')//;
2858: $field=~s/(\"|\')$//;
2859: $components{$i}=$field;
2860: $i++;
2861: }
2862: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2863: my $i=0;
2864: foreach (split(/\t/,$record)) {
2865: my $field=$_;
2866: $field=~s/^(\"|\')//;
2867: $field=~s/(\"|\')$//;
2868: $components{$i}=$field;
2869: $i++;
2870: }
2871: } else {
2872: my @allfields=split(/\,/,$record);
2873: my $i=0;
2874: my $j;
2875: for ($j=0;$j<=$#allfields;$j++) {
2876: my $field=$allfields[$j];
2877: if ($field=~/^\s*(\"|\')/) {
2878: my $delimiter=$1;
2879: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2880: $j++;
2881: $field.=','.$allfields[$j];
2882: }
2883: $field=~s/^\s*$delimiter//;
2884: $field=~s/$delimiter\s*$//;
2885: }
2886: $components{$i}=$field;
2887: $i++;
2888: }
2889: }
2890: return %components;
2891: }
2892:
2893: ######################################################
2894: ######################################################
2895:
2896: =pod
2897:
2898: =item * upfile_select_html()
2899:
2900: Return HTML code to select a file from the users machine and specify
2901: the file type.
2902:
2903: =cut
2904:
2905: ######################################################
2906: ######################################################
2907: sub upfile_select_html {
2908: my %Types = (
2909: csv => &mt('CSV (comma separated values, spreadsheet)'),
2910: space => &mt('Space separated'),
2911: tab => &mt('Tabulator separated'),
2912: # xml => &mt('HTML/XML'),
2913: );
2914: my $Str = '<input type="file" name="upfile" size="50" />'.
2915: '<br />Type: <select name="upfiletype">';
2916: foreach my $type (sort(keys(%Types))) {
2917: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
2918: }
2919: $Str .= "</select>\n";
2920: return $Str;
2921: }
2922:
2923: ######################################################
2924: ######################################################
2925:
2926: =pod
2927:
2928: =item * csv_print_samples($r,$records)
2929:
2930: Prints a table of sample values from each column uploaded $r is an
2931: Apache Request ref, $records is an arrayref from
2932: &Apache::loncommon::upfile_record_sep
2933:
2934: =cut
2935:
2936: ######################################################
2937: ######################################################
2938: sub csv_print_samples {
2939: my ($r,$records) = @_;
2940: my (%sone,%stwo,%sthree);
2941: %sone=&record_sep($$records[0]);
2942: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2943: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2944: #
2945: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
2946: foreach (sort({$a <=> $b} keys(%sone))) {
2947: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
2948: $r->print('</tr>');
2949: foreach my $hash (\%sone,\%stwo,\%sthree) {
2950: $r->print('<tr>');
2951: foreach (sort({$a <=> $b} keys(%sone))) {
2952: $r->print('<td>');
2953: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
2954: $r->print('</td>');
2955: }
2956: $r->print('</tr>');
2957: }
2958: $r->print('</tr></table><br />'."\n");
2959: }
2960:
2961: ######################################################
2962: ######################################################
2963:
2964: =pod
2965:
2966: =item * csv_print_select_table($r,$records,$d)
2967:
2968: Prints a table to create associations between values and table columns.
2969:
2970: $r is an Apache Request ref,
2971: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2972: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
2973:
2974: =cut
2975:
2976: ######################################################
2977: ######################################################
2978: sub csv_print_select_table {
2979: my ($r,$records,$d) = @_;
2980: my $i=0;my %sone;
2981: %sone=&record_sep($$records[0]);
2982: $r->print(&mt('Associate columns with student attributes.')."\n".
2983: '<table border="2"><tr>'.
2984: '<th>'.&mt('Attribute').'</th>'.
2985: '<th>'.&mt('Column').'</th></tr>'."\n");
2986: foreach (@$d) {
2987: my ($value,$display,$defaultcol)=@{ $_ };
2988: $r->print('<tr><td>'.$display.'</td>');
2989:
2990: $r->print('<td><select name=f'.$i.
2991: ' onchange="javascript:flip(this.form,'.$i.');">');
2992: $r->print('<option value="none"></option>');
2993: foreach (sort({$a <=> $b} keys(%sone))) {
2994: $r->print('<option value="'.$_.'"'.
2995: ($_ eq $defaultcol ? ' selected ' : '').
2996: '>Column '.($_+1).'</option>');
2997: }
2998: $r->print('</select></td></tr>'."\n");
2999: $i++;
3000: }
3001: $i--;
3002: return $i;
3003: }
3004:
3005: ######################################################
3006: ######################################################
3007:
3008: =pod
3009:
3010: =item * csv_samples_select_table($r,$records,$d)
3011:
3012: Prints a table of sample values from the upload and can make associate samples to internal names.
3013:
3014: $r is an Apache Request ref,
3015: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3016: $d is an array of 2 element arrays (internal name, displayed name)
3017:
3018: =cut
3019:
3020: ######################################################
3021: ######################################################
3022: sub csv_samples_select_table {
3023: my ($r,$records,$d) = @_;
3024: my %sone; my %stwo; my %sthree;
3025: my $i=0;
3026: #
3027: $r->print('<table border=2><tr><th>'.
3028: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3029: %sone=&record_sep($$records[0]);
3030: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3031: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3032: #
3033: foreach (sort keys %sone) {
3034: $r->print('<tr><td><select name="f'.$i.'"'.
3035: ' onchange="javascript:flip(this.form,'.$i.');">');
3036: foreach (@$d) {
3037: my ($value,$display,$defaultcol)=@{ $_ };
3038: $r->print('<option value="'.$value.'"'.
3039: ($i eq $defaultcol ? ' selected ':'').'>'.
3040: $display.'</option>');
3041: }
3042: $r->print('</select></td><td>');
3043: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3044: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3045: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3046: $r->print('</td></tr>');
3047: $i++;
3048: }
3049: $i--;
3050: return($i);
3051: }
3052:
3053: ######################################################
3054: ######################################################
3055:
3056: =pod
3057:
3058: =item clean_excel_name($name)
3059:
3060: Returns a replacement for $name which does not contain any illegal characters.
3061:
3062: =cut
3063:
3064: ######################################################
3065: ######################################################
3066: sub clean_excel_name {
3067: my ($name) = @_;
3068: $name =~ s/[:\*\?\/\\]//g;
3069: if (length($name) > 31) {
3070: $name = substr($name,0,31);
3071: }
3072: return $name;
3073: }
3074:
3075: =pod
3076:
3077: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3078:
3079: Returns either 1 or undef
3080:
3081: 1 if the part is to be hidden, undef if it is to be shown
3082:
3083: Arguments are:
3084:
3085: $id the id of the part to be checked
3086: $symb, optional the symb of the resource to check
3087: $udom, optional the domain of the user to check for
3088: $uname, optional the username of the user to check for
3089:
3090: =cut
3091:
3092: sub check_if_partid_hidden {
3093: my ($id,$symb,$udom,$uname) = @_;
3094: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3095: $symb,$udom,$uname);
3096: my $truth=1;
3097: #if the string starts with !, then the list is the list to show not hide
3098: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3099: my @hiddenlist=split(/,/,$hiddenparts);
3100: foreach my $checkid (@hiddenlist) {
3101: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3102: }
3103: return !$truth;
3104: }
3105:
3106:
3107: ############################################################
3108: ############################################################
3109:
3110: =pod
3111:
3112: =back
3113:
3114: =head1 cgi-bin script and graphing routines
3115:
3116: =over 4
3117:
3118: =item get_cgi_id
3119:
3120: Inputs: none
3121:
3122: Returns an id which can be used to pass environment variables
3123: to various cgi-bin scripts. These environment variables will
3124: be removed from the users environment after a given time by
3125: the routine &Apache::lonnet::transfer_profile_to_env.
3126:
3127: =cut
3128:
3129: ############################################################
3130: ############################################################
3131: my $uniq=0;
3132: sub get_cgi_id {
3133: $uniq=($uniq+1)%100000;
3134: return (time.'_'.$uniq);
3135: }
3136:
3137: ############################################################
3138: ############################################################
3139:
3140: =pod
3141:
3142: =item DrawBarGraph
3143:
3144: Facilitates the plotting of data in a (stacked) bar graph.
3145: Puts plot definition data into the users environment in order for
3146: graph.png to plot it. Returns an <img> tag for the plot.
3147: The bars on the plot are labeled '1','2',...,'n'.
3148:
3149: Inputs:
3150:
3151: =over 4
3152:
3153: =item $Title: string, the title of the plot
3154:
3155: =item $xlabel: string, text describing the X-axis of the plot
3156:
3157: =item $ylabel: string, text describing the Y-axis of the plot
3158:
3159: =item $Max: scalar, the maximum Y value to use in the plot
3160: If $Max is < any data point, the graph will not be rendered.
3161:
3162: =item $colors: array ref holding the colors to be used for the data sets when
3163: they are plotted. If undefined, default values will be used.
3164:
3165: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3166:
3167: =item @Values: An array of array references. Each array reference holds data
3168: to be plotted in a stacked bar chart.
3169:
3170: =back
3171:
3172: Returns:
3173:
3174: An <img> tag which references graph.png and the appropriate identifying
3175: information for the plot.
3176:
3177: =cut
3178:
3179: ############################################################
3180: ############################################################
3181: sub DrawBarGraph {
3182: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3183: #
3184: if (! defined($colors)) {
3185: $colors = ['#33ff00',
3186: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3187: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3188: ];
3189: }
3190: #
3191: my $identifier = &get_cgi_id();
3192: my $id = 'cgi.'.$identifier;
3193: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3194: return '';
3195: }
3196: my $NumBars = scalar(@{$Values[0]});
3197: my %ValuesHash;
3198: my $NumSets=1;
3199: foreach my $array (@Values) {
3200: next if (! ref($array));
3201: $ValuesHash{$id.'.data.'.$NumSets++} =
3202: join(',',@$array);
3203: }
3204: #
3205: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3206: if ($NumBars < 10) {
3207: $width = 120+$NumBars*15;
3208: $xskip = 1;
3209: $bar_width = 15;
3210: } elsif ($NumBars <= 25) {
3211: $width = 120+$NumBars*11;
3212: $xskip = 5;
3213: $bar_width = 8;
3214: } elsif ($NumBars <= 50) {
3215: $width = 120+$NumBars*8;
3216: $xskip = 5;
3217: $bar_width = 4;
3218: } else {
3219: $width = 120+$NumBars*8;
3220: $xskip = 5;
3221: $bar_width = 4;
3222: }
3223: #
3224: my @Labels;
3225: if (defined($labels)) {
3226: @Labels = @$labels;
3227: } else {
3228: for (my $i=0;$i<@{$Values[0]};$i++) {
3229: push (@Labels,$i+1);
3230: }
3231: }
3232: #
3233: $Max = 1 if ($Max < 1);
3234: if ( int($Max) < $Max ) {
3235: $Max++;
3236: $Max = int($Max);
3237: }
3238: $Title = '' if (! defined($Title));
3239: $xlabel = '' if (! defined($xlabel));
3240: $ylabel = '' if (! defined($ylabel));
3241: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3242: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3243: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3244: $ValuesHash{$id.'.y_max_value'} = $Max;
3245: $ValuesHash{$id.'.NumBars'} = $NumBars;
3246: $ValuesHash{$id.'.NumSets'} = $NumSets;
3247: $ValuesHash{$id.'.PlotType'} = 'bar';
3248: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3249: $ValuesHash{$id.'.height'} = $height;
3250: $ValuesHash{$id.'.width'} = $width;
3251: $ValuesHash{$id.'.xskip'} = $xskip;
3252: $ValuesHash{$id.'.bar_width'} = $bar_width;
3253: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3254: #
3255: &Apache::lonnet::appenv(%ValuesHash);
3256: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3257: }
3258:
3259: ############################################################
3260: ############################################################
3261:
3262: =pod
3263:
3264: =item DrawXYGraph
3265:
3266: Facilitates the plotting of data in an XY graph.
3267: Puts plot definition data into the users environment in order for
3268: graph.png to plot it. Returns an <img> tag for the plot.
3269:
3270: Inputs:
3271:
3272: =over 4
3273:
3274: =item $Title: string, the title of the plot
3275:
3276: =item $xlabel: string, text describing the X-axis of the plot
3277:
3278: =item $ylabel: string, text describing the Y-axis of the plot
3279:
3280: =item $Max: scalar, the maximum Y value to use in the plot
3281: If $Max is < any data point, the graph will not be rendered.
3282:
3283: =item $colors: Array ref containing the hex color codes for the data to be
3284: plotted in. If undefined, default values will be used.
3285:
3286: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3287:
3288: =item $Ydata: Array ref containing Array refs.
3289: Each of the contained arrays will be plotted as a separate curve.
3290:
3291: =item %Values: hash indicating or overriding any default values which are
3292: passed to graph.png.
3293: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3294:
3295: =back
3296:
3297: Returns:
3298:
3299: An <img> tag which references graph.png and the appropriate identifying
3300: information for the plot.
3301:
3302: =cut
3303:
3304: ############################################################
3305: ############################################################
3306: sub DrawXYGraph {
3307: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3308: #
3309: # Create the identifier for the graph
3310: my $identifier = &get_cgi_id();
3311: my $id = 'cgi.'.$identifier;
3312: #
3313: $Title = '' if (! defined($Title));
3314: $xlabel = '' if (! defined($xlabel));
3315: $ylabel = '' if (! defined($ylabel));
3316: my %ValuesHash =
3317: (
3318: $id.'.title' => &Apache::lonnet::escape($Title),
3319: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3320: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3321: $id.'.y_max_value'=> $Max,
3322: $id.'.labels' => join(',',@$Xlabels),
3323: $id.'.PlotType' => 'XY',
3324: );
3325: #
3326: if (defined($colors) && ref($colors) eq 'ARRAY') {
3327: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3328: }
3329: #
3330: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3331: return '';
3332: }
3333: my $NumSets=1;
3334: foreach my $array (@{$Ydata}){
3335: next if (! ref($array));
3336: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3337: }
3338: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3339: #
3340: # Deal with other parameters
3341: while (my ($key,$value) = each(%Values)) {
3342: $ValuesHash{$id.'.'.$key} = $value;
3343: }
3344: #
3345: &Apache::lonnet::appenv(%ValuesHash);
3346: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3347: }
3348:
3349: ############################################################
3350: ############################################################
3351:
3352: =pod
3353:
3354: =item DrawXYYGraph
3355:
3356: Facilitates the plotting of data in an XY graph with two Y axes.
3357: Puts plot definition data into the users environment in order for
3358: graph.png to plot it. Returns an <img> tag for the plot.
3359:
3360: Inputs:
3361:
3362: =over 4
3363:
3364: =item $Title: string, the title of the plot
3365:
3366: =item $xlabel: string, text describing the X-axis of the plot
3367:
3368: =item $ylabel: string, text describing the Y-axis of the plot
3369:
3370: =item $colors: Array ref containing the hex color codes for the data to be
3371: plotted in. If undefined, default values will be used.
3372:
3373: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3374:
3375: =item $Ydata1: The first data set
3376:
3377: =item $Min1: The minimum value of the left Y-axis
3378:
3379: =item $Max1: The maximum value of the left Y-axis
3380:
3381: =item $Ydata2: The second data set
3382:
3383: =item $Min2: The minimum value of the right Y-axis
3384:
3385: =item $Max2: The maximum value of the left Y-axis
3386:
3387: =item %Values: hash indicating or overriding any default values which are
3388: passed to graph.png.
3389: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3390:
3391: =back
3392:
3393: Returns:
3394:
3395: An <img> tag which references graph.png and the appropriate identifying
3396: information for the plot.
3397:
3398: =cut
3399:
3400: ############################################################
3401: ############################################################
3402: sub DrawXYYGraph {
3403: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3404: $Ydata2,$Min2,$Max2,%Values)=@_;
3405: #
3406: # Create the identifier for the graph
3407: my $identifier = &get_cgi_id();
3408: my $id = 'cgi.'.$identifier;
3409: #
3410: $Title = '' if (! defined($Title));
3411: $xlabel = '' if (! defined($xlabel));
3412: $ylabel = '' if (! defined($ylabel));
3413: my %ValuesHash =
3414: (
3415: $id.'.title' => &Apache::lonnet::escape($Title),
3416: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3417: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3418: $id.'.labels' => join(',',@$Xlabels),
3419: $id.'.PlotType' => 'XY',
3420: $id.'.NumSets' => 2,
3421: $id.'.two_axes' => 1,
3422: $id.'.y1_max_value' => $Max1,
3423: $id.'.y1_min_value' => $Min1,
3424: $id.'.y2_max_value' => $Max2,
3425: $id.'.y2_min_value' => $Min2,
3426: );
3427: #
3428: if (defined($colors) && ref($colors) eq 'ARRAY') {
3429: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3430: }
3431: #
3432: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3433: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3434: return '';
3435: }
3436: my $NumSets=1;
3437: foreach my $array ($Ydata1,$Ydata2){
3438: next if (! ref($array));
3439: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3440: }
3441: #
3442: # Deal with other parameters
3443: while (my ($key,$value) = each(%Values)) {
3444: $ValuesHash{$id.'.'.$key} = $value;
3445: }
3446: #
3447: &Apache::lonnet::appenv(%ValuesHash);
3448: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3449: }
3450:
3451: ############################################################
3452: ############################################################
3453:
3454: =pod
3455:
3456: =back
3457:
3458: =head1 Statistics helper routines?
3459:
3460: Bad place for them but what the hell.
3461:
3462: =over 4
3463:
3464: =item &chartlink
3465:
3466: Returns a link to the chart for a specific student.
3467:
3468: Inputs:
3469:
3470: =over 4
3471:
3472: =item $linktext: The text of the link
3473:
3474: =item $sname: The students username
3475:
3476: =item $sdomain: The students domain
3477:
3478: =back
3479:
3480: =back
3481:
3482: =cut
3483:
3484: ############################################################
3485: ############################################################
3486: sub chartlink {
3487: my ($linktext, $sname, $sdomain) = @_;
3488: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3489: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3490: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3491: '">'.$linktext.'</a>';
3492: }
3493:
3494: #######################################################
3495: #######################################################
3496:
3497: =pod
3498:
3499: =head1 Course Environment Routines
3500:
3501: =over 4
3502:
3503: =item &restore_course_settings
3504:
3505: =item &store_course_settings
3506:
3507: Restores/Store indicated form parameters from the course environment.
3508: Will not overwrite existing values of the form parameters.
3509:
3510: Inputs:
3511: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3512:
3513: a hash ref describing the data to be stored. For example:
3514:
3515: %Save_Parameters = ('Status' => 'scalar',
3516: 'chartoutputmode' => 'scalar',
3517: 'chartoutputdata' => 'scalar',
3518: 'Section' => 'array',
3519: 'StudentData' => 'array',
3520: 'Maps' => 'array');
3521:
3522: Returns: both routines return nothing
3523:
3524: =cut
3525:
3526: #######################################################
3527: #######################################################
3528: sub store_course_settings {
3529: # save to the environment
3530: # appenv the same items, just to be safe
3531: my $courseid = $ENV{'request.course.id'};
3532: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3533: my ($prefix,$Settings) = @_;
3534: my %SaveHash;
3535: my %AppHash;
3536: while (my ($setting,$type) = each(%$Settings)) {
3537: my $basename = 'internal.'.$prefix.'.'.$setting;
3538: my $envname = 'course.'.$courseid.'.'.$basename;
3539: if (exists($ENV{'form.'.$setting})) {
3540: # Save this value away
3541: if ($type eq 'scalar' &&
3542: (! exists($ENV{$envname}) ||
3543: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3544: $SaveHash{$basename} = $ENV{'form.'.$setting};
3545: $AppHash{$envname} = $ENV{'form.'.$setting};
3546: } elsif ($type eq 'array') {
3547: my $stored_form;
3548: if (ref($ENV{'form.'.$setting})) {
3549: $stored_form = join(',',
3550: map {
3551: &Apache::lonnet::escape($_);
3552: } sort(@{$ENV{'form.'.$setting}}));
3553: } else {
3554: $stored_form =
3555: &Apache::lonnet::escape($ENV{'form.'.$setting});
3556: }
3557: # Determine if the array contents are the same.
3558: if ($stored_form ne $ENV{$envname}) {
3559: $SaveHash{$basename} = $stored_form;
3560: $AppHash{$envname} = $stored_form;
3561: }
3562: }
3563: }
3564: }
3565: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3566: $coursedom,
3567: $ENV{'course.'.$courseid.'.num'});
3568: if ($put_result !~ /^(ok|delayed)/) {
3569: &Apache::lonnet::logthis('unable to save form parameters, '.
3570: 'got error:'.$put_result);
3571: }
3572: # Make sure these settings stick around in this session, too
3573: &Apache::lonnet::appenv(%AppHash);
3574: return;
3575: }
3576:
3577: sub restore_course_settings {
3578: my $courseid = $ENV{'request.course.id'};
3579: my ($prefix,$Settings) = @_;
3580: while (my ($setting,$type) = each(%$Settings)) {
3581: next if (exists($ENV{'form.'.$setting}));
3582: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3583: '.'.$setting;
3584: if (exists($ENV{$envname})) {
3585: if ($type eq 'scalar') {
3586: $ENV{'form.'.$setting} = $ENV{$envname};
3587: } elsif ($type eq 'array') {
3588: $ENV{'form.'.$setting} = [
3589: map {
3590: &Apache::lonnet::unescape($_);
3591: } split(',',$ENV{$envname})
3592: ];
3593: }
3594: }
3595: }
3596: }
3597:
3598: ############################################################
3599: ############################################################
3600:
3601: sub propath {
3602: my ($udom,$uname)=@_;
3603: $udom=~s/\W//g;
3604: $uname=~s/\W//g;
3605: my $subdir=$uname.'__';
3606: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3607: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3608: return $proname;
3609: }
3610:
3611: sub icon {
3612: my ($file)=@_;
3613: my $curfext = (split(/\./,$file))[-1];
3614: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3615: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3616: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3617: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3618: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3619: $curfext.".gif") {
3620: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3621: $curfext.".gif";
3622: }
3623: }
3624: return $iconname;
3625: }
3626:
3627: =pod
3628:
3629: =back
3630:
3631: =cut
3632:
3633: 1;
3634: __END__;
3635:
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