1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.192 2004/06/11 02:21:45 taceyjo1 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: $addOther .
632: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
633: undef,undef,600)
634: .'</td><td>'.
635: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
636: undef,undef,600)
637: .'</td></tr></table>';
638: }
639:
640: sub help_open_bug {
641: my ($topic, $text, $stayOnPage, $width, $height) = @_;
642: unless ($ENV{'user.adv'}) { return ''; }
643: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
644: $text = "" if (not defined $text);
645: $stayOnPage = 0 if (not defined $stayOnPage);
646: if ($ENV{'browser.interface'} eq 'textual' ||
647: $ENV{'environment.remote'} eq 'off' ) {
648: $stayOnPage=1;
649: }
650: $width = 600 if (not defined $width);
651: $height = 600 if (not defined $height);
652:
653: $topic=~s/\W+/\+/g;
654: my $link='';
655: my $template='';
656: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
657: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
658: if (!$stayOnPage)
659: {
660: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
661: }
662: else
663: {
664: $link = $url;
665: }
666: # Add the text
667: if ($text ne "")
668: {
669: $template .=
670: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
671: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
672: }
673:
674: # Add the graphic
675: my $title = &mt('Report a Bug');
676: $template .= <<"ENDTEMPLATE";
677: <a href="$link" title="$title"><image src="/adm/lonMisc/smallBug.gif" border="0" alt="(Bug: $topic)" /></a>
678: ENDTEMPLATE
679: if ($text ne '') { $template.='</td></tr></table>' };
680: return $template;
681:
682: }
683:
684: sub help_open_faq {
685: my ($topic, $text, $stayOnPage, $width, $height) = @_;
686: unless ($ENV{'user.adv'}) { return ''; }
687: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
688: $text = "" if (not defined $text);
689: $stayOnPage = 0 if (not defined $stayOnPage);
690: if ($ENV{'browser.interface'} eq 'textual' ||
691: $ENV{'environment.remote'} eq 'off' ) {
692: $stayOnPage=1;
693: }
694: $width = 350 if (not defined $width);
695: $height = 400 if (not defined $height);
696:
697: $topic=~s/\W+/\+/g;
698: my $link='';
699: my $template='';
700: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
701: if (!$stayOnPage)
702: {
703: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
704: }
705: else
706: {
707: $link = $url;
708: }
709:
710: # Add the text
711: if ($text ne "")
712: {
713: $template .=
714: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
715: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
716: }
717:
718: # Add the graphic
719: my $title = &mt('View the FAQ');
720: $template .= <<"ENDTEMPLATE";
721: <a href="$link" title="$title"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(FAQ: $topic)" /></a>
722: ENDTEMPLATE
723: if ($text ne '') { $template.='</td></tr></table>' };
724: return $template;
725:
726: }
727:
728: ###############################################################
729: ###############################################################
730:
731: =pod
732:
733: =item * csv_translate($text)
734:
735: Translate $text to allow it to be output as a 'comma separated values'
736: format.
737:
738: =cut
739:
740: ###############################################################
741: ###############################################################
742: sub csv_translate {
743: my $text = shift;
744: $text =~ s/\"/\"\"/g;
745: $text =~ s/\n//g;
746: return $text;
747: }
748:
749:
750: ###############################################################
751: ###############################################################
752:
753: =pod
754:
755: =item * define_excel_formats
756:
757: Define some commonly used Excel cell formats.
758:
759: Currently supported formats:
760:
761: =over 4
762:
763: =item header
764:
765: =item bold
766:
767: =item h1
768:
769: =item h2
770:
771: =item h3
772:
773: =item date
774:
775: =back
776:
777: Inputs: $workbook
778:
779: Returns: $format, a hash reference.
780:
781: =cut
782:
783: ###############################################################
784: ###############################################################
785: sub define_excel_formats {
786: my ($workbook) = @_;
787: my $format;
788: $format->{'header'} = $workbook->add_format(bold => 1,
789: bottom => 1,
790: align => 'center');
791: $format->{'bold'} = $workbook->add_format(bold=>1);
792: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
793: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
794: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
795: $format->{'date'} = $workbook->add_format(num_format=>
796: 'mmm d yyyy hh:mm AM/PM');
797: return $format;
798: }
799:
800: ###############################################################
801: ###############################################################
802:
803: =pod
804:
805: =item * change_content_javascript():
806:
807: This and the next function allow you to create small sections of an
808: otherwise static HTML page that you can update on the fly with
809: Javascript, even in Netscape 4.
810:
811: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
812: must be written to the HTML page once. It will prove the Javascript
813: function "change(name, content)". Calling the change function with the
814: name of the section
815: you want to update, matching the name passed to C<changable_area>, and
816: the new content you want to put in there, will put the content into
817: that area.
818:
819: B<Note>: Netscape 4 only reserves enough space for the changable area
820: to contain room for the original contents. You need to "make space"
821: for whatever changes you wish to make, and be B<sure> to check your
822: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
823: it's adequate for updating a one-line status display, but little more.
824: This script will set the space to 100% width, so you only need to
825: worry about height in Netscape 4.
826:
827: Modern browsers are much less limiting, and if you can commit to the
828: user not using Netscape 4, this feature may be used freely with
829: pretty much any HTML.
830:
831: =cut
832:
833: sub change_content_javascript {
834: # If we're on Netscape 4, we need to use Layer-based code
835: if ($ENV{'browser.type'} eq 'netscape' &&
836: $ENV{'browser.version'} =~ /^4\./) {
837: return (<<NETSCAPE4);
838: function change(name, content) {
839: doc = document.layers[name+"___escape"].layers[0].document;
840: doc.open();
841: doc.write(content);
842: doc.close();
843: }
844: NETSCAPE4
845: } else {
846: # Otherwise, we need to use semi-standards-compliant code
847: # (technically, "innerHTML" isn't standard but the equivalent
848: # is really scary, and every useful browser supports it
849: return (<<DOMBASED);
850: function change(name, content) {
851: element = document.getElementById(name);
852: element.innerHTML = content;
853: }
854: DOMBASED
855: }
856: }
857:
858: =pod
859:
860: =item * changable_area($name, $origContent):
861:
862: This provides a "changable area" that can be modified on the fly via
863: the Javascript code provided in C<change_content_javascript>. $name is
864: the name you will use to reference the area later; do not repeat the
865: same name on a given HTML page more then once. $origContent is what
866: the area will originally contain, which can be left blank.
867:
868: =cut
869:
870: sub changable_area {
871: my ($name, $origContent) = @_;
872:
873: if ($ENV{'browser.type'} eq 'netscape' &&
874: $ENV{'browser.version'} =~ /^4\./) {
875: # If this is netscape 4, we need to use the Layer tag
876: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
877: } else {
878: return "<span id='$name'>$origContent</span>";
879: }
880: }
881:
882: =pod
883:
884: =back
885:
886: =cut
887:
888: ###############################################################
889: ## Home server <option> list generating code ##
890: ###############################################################
891:
892: =pod
893:
894: =head1 Home Server option list generating code
895:
896: =over 4
897:
898: =item * get_domains()
899:
900: Returns an array containing each of the domains listed in the hosts.tab
901: file.
902:
903: =cut
904:
905: #-------------------------------------------
906: sub get_domains {
907: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
908: my @domains;
909: my %seen;
910: foreach (sort values(%Apache::lonnet::hostdom)) {
911: push (@domains,$_) unless $seen{$_}++;
912: }
913: return @domains;
914: }
915:
916: # ------------------------------------------
917:
918: sub domain_select {
919: my ($name,$value,$multiple)=@_;
920: my %domains=map {
921: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
922: } &get_domains;
923: if ($multiple) {
924: $domains{''}=&mt('Any domain');
925: return &multiple_select_form($name,$value,4,%domains);
926: } else {
927: return &select_form($name,$value,%domains);
928: }
929: }
930:
931: sub multiple_select_form {
932: my ($name,$value,$size,%hash)=@_;
933: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
934: my $output='';
935: if (! defined($size)) {
936: $size = 4;
937: if (scalar(keys(%hash))<4) {
938: $size = scalar(keys(%hash));
939: }
940: }
941: $output.="\n<select name='$name' size='$size' multiple='1'>";
942: foreach (sort(keys(%hash))) {
943: $output.='<option value="'.$_.'" ';
944: $output.='selected ' if ($selected{$_});
945: $output.='>'.$hash{$_}."</option>\n";
946: }
947: $output.="</select>\n";
948: return $output;
949: }
950:
951: #-------------------------------------------
952:
953: =pod
954:
955: =item * select_form($defdom,$name,%hash)
956:
957: Returns a string containing a <select name='$name' size='1'> form to
958: allow a user to select options from a hash option_name => displayed text.
959: See lonrights.pm for an example invocation and use.
960:
961: =cut
962:
963: #-------------------------------------------
964: sub select_form {
965: my ($def,$name,%hash) = @_;
966: my $selectform = "<select name=\"$name\" size=\"1\">\n";
967: my @keys;
968: if (exists($hash{'select_form_order'})) {
969: @keys=@{$hash{'select_form_order'}};
970: } else {
971: @keys=sort(keys(%hash));
972: }
973: foreach (@keys) {
974: $selectform.="<option value=\"$_\" ".
975: ($_ eq $def ? 'selected' : '').
976: ">".&mt($hash{$_})."</option>\n";
977: }
978: $selectform.="</select>";
979: return $selectform;
980: }
981:
982: sub gradeleveldescription {
983: my $gradelevel=shift;
984: my %gradelevels=(0 => 'Not specified',
985: 1 => 'Grade 1',
986: 2 => 'Grade 2',
987: 3 => 'Grade 3',
988: 4 => 'Grade 4',
989: 5 => 'Grade 5',
990: 6 => 'Grade 6',
991: 7 => 'Grade 7',
992: 8 => 'Grade 8',
993: 9 => 'Grade 9',
994: 10 => 'Grade 10',
995: 11 => 'Grade 11',
996: 12 => 'Grade 12',
997: 13 => 'Grade 13',
998: 14 => '100 Level',
999: 15 => '200 Level',
1000: 16 => '300 Level',
1001: 17 => '400 Level',
1002: 18 => 'Graduate Level');
1003: return &mt($gradelevels{$gradelevel});
1004: }
1005:
1006: sub select_level_form {
1007: my ($deflevel,$name)=@_;
1008: unless ($deflevel) { $deflevel=0; }
1009: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1010: for (my $i=0; $i<=18; $i++) {
1011: $selectform.="<option value=\"$i\" ".
1012: ($i==$deflevel ? 'selected' : '').
1013: ">".&gradeleveldescription($i)."</option>\n";
1014: }
1015: $selectform.="</select>";
1016: return $selectform;
1017: }
1018:
1019: #-------------------------------------------
1020:
1021: =pod
1022:
1023: =item * select_dom_form($defdom,$name,$includeempty)
1024:
1025: Returns a string containing a <select name='$name' size='1'> form to
1026: allow a user to select the domain to preform an operation in.
1027: See loncreateuser.pm for an example invocation and use.
1028:
1029: If the $includeempty flag is set, it also includes an empty choice ("no domain
1030: selected");
1031:
1032: =cut
1033:
1034: #-------------------------------------------
1035: sub select_dom_form {
1036: my ($defdom,$name,$includeempty) = @_;
1037: my @domains = get_domains();
1038: if ($includeempty) { @domains=('',@domains); }
1039: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1040: foreach (@domains) {
1041: $selectdomain.="<option value=\"$_\" ".
1042: ($_ eq $defdom ? 'selected' : '').
1043: ">$_</option>\n";
1044: }
1045: $selectdomain.="</select>";
1046: return $selectdomain;
1047: }
1048:
1049: #-------------------------------------------
1050:
1051: =pod
1052:
1053: =item * get_library_servers($domain)
1054:
1055: Returns a hash which contains keys like '103l3' and values like
1056: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1057: given $domain.
1058:
1059: =cut
1060:
1061: #-------------------------------------------
1062: sub get_library_servers {
1063: my $domain = shift;
1064: my %library_servers;
1065: foreach (keys(%Apache::lonnet::libserv)) {
1066: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1067: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1068: }
1069: }
1070: return %library_servers;
1071: }
1072:
1073: #-------------------------------------------
1074:
1075: =pod
1076:
1077: =item * home_server_option_list($domain)
1078:
1079: returns a string which contains an <option> list to be used in a
1080: <select> form input. See loncreateuser.pm for an example.
1081:
1082: =cut
1083:
1084: #-------------------------------------------
1085: sub home_server_option_list {
1086: my $domain = shift;
1087: my %servers = &get_library_servers($domain);
1088: my $result = '';
1089: foreach (sort keys(%servers)) {
1090: $result.=
1091: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1092: }
1093: return $result;
1094: }
1095:
1096: =pod
1097:
1098: =back
1099:
1100: =cut
1101:
1102: ###############################################################
1103: ## Decoding User Agent ##
1104: ###############################################################
1105:
1106: =pod
1107:
1108: =head1 Decoding the User Agent
1109:
1110: =over 4
1111:
1112: =item * &decode_user_agent()
1113:
1114: Inputs: $r
1115:
1116: Outputs:
1117:
1118: =over 4
1119:
1120: =item * $httpbrowser
1121:
1122: =item * $clientbrowser
1123:
1124: =item * $clientversion
1125:
1126: =item * $clientmathml
1127:
1128: =item * $clientunicode
1129:
1130: =item * $clientos
1131:
1132: =back
1133:
1134: =back
1135:
1136: =cut
1137:
1138: ###############################################################
1139: ###############################################################
1140: sub decode_user_agent {
1141: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1142: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1143: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1144: my $clientbrowser='unknown';
1145: my $clientversion='0';
1146: my $clientmathml='';
1147: my $clientunicode='0';
1148: for (my $i=0;$i<=$#browsertype;$i++) {
1149: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1150: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1151: $clientbrowser=$bname;
1152: $httpbrowser=~/$vreg/i;
1153: $clientversion=$1;
1154: $clientmathml=($clientversion>=$minv);
1155: $clientunicode=($clientversion>=$univ);
1156: }
1157: }
1158: my $clientos='unknown';
1159: if (($httpbrowser=~/linux/i) ||
1160: ($httpbrowser=~/unix/i) ||
1161: ($httpbrowser=~/ux/i) ||
1162: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1163: if (($httpbrowser=~/vax/i) ||
1164: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1165: if ($httpbrowser=~/next/i) { $clientos='next'; }
1166: if (($httpbrowser=~/mac/i) ||
1167: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1168: if ($httpbrowser=~/win/i) { $clientos='win'; }
1169: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1170: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1171: $clientunicode,$clientos,);
1172: }
1173:
1174: ###############################################################
1175: ## Authentication changing form generation subroutines ##
1176: ###############################################################
1177: ##
1178: ## All of the authform_xxxxxxx subroutines take their inputs in a
1179: ## hash, and have reasonable default values.
1180: ##
1181: ## formname = the name given in the <form> tag.
1182: #-------------------------------------------
1183:
1184: =pod
1185:
1186: =head1 Authentication Routines
1187:
1188: =over 4
1189:
1190: =item * authform_xxxxxx
1191:
1192: The authform_xxxxxx subroutines provide javascript and html forms which
1193: handle some of the conveniences required for authentication forms.
1194: This is not an optimal method, but it works.
1195:
1196: See loncreateuser.pm for invocation and use examples.
1197:
1198: =over 4
1199:
1200: =item * authform_header
1201:
1202: =item * authform_authorwarning
1203:
1204: =item * authform_nochange
1205:
1206: =item * authform_kerberos
1207:
1208: =item * authform_internal
1209:
1210: =item * authform_filesystem
1211:
1212: =back
1213:
1214: =back
1215:
1216: =cut
1217:
1218: #-------------------------------------------
1219: sub authform_header{
1220: my %in = (
1221: formname => 'cu',
1222: kerb_def_dom => '',
1223: @_,
1224: );
1225: $in{'formname'} = 'document.' . $in{'formname'};
1226: my $result='';
1227:
1228: #---------------------------------------------- Code for upper case translation
1229: my $Javascript_toUpperCase;
1230: unless ($in{kerb_def_dom}) {
1231: $Javascript_toUpperCase =<<"END";
1232: switch (choice) {
1233: case 'krb': currentform.elements[choicearg].value =
1234: currentform.elements[choicearg].value.toUpperCase();
1235: break;
1236: default:
1237: }
1238: END
1239: } else {
1240: $Javascript_toUpperCase = "";
1241: }
1242:
1243: my $radioval = "'nochange'";
1244: if (exists($in{'curr_authtype'}) &&
1245: defined($in{'curr_authtype'}) &&
1246: $in{'curr_authtype'} ne '') {
1247: $radioval = "'$in{'curr_authtype'}arg'";
1248: }
1249: my $argfield = 'null';
1250: if ( grep/^mode$/,(keys %in) ) {
1251: if ($in{'mode'} eq 'modifycourse') {
1252: if ( grep/^curr_authtype$/,(keys %in) ) {
1253: $radioval = "'$in{'curr_authtype'}'";
1254: }
1255: if ( grep/^curr_autharg$/,(keys %in) ) {
1256: unless ($in{'curr_autharg'} eq '') {
1257: $argfield = "'$in{'curr_autharg'}'";
1258: }
1259: }
1260: }
1261: }
1262:
1263: $result.=<<"END";
1264: var current = new Object();
1265: current.radiovalue = $radioval;
1266: current.argfield = $argfield;
1267:
1268: function changed_radio(choice,currentform) {
1269: var choicearg = choice + 'arg';
1270: // If a radio button in changed, we need to change the argfield
1271: if (current.radiovalue != choice) {
1272: current.radiovalue = choice;
1273: if (current.argfield != null) {
1274: currentform.elements[current.argfield].value = '';
1275: }
1276: if (choice == 'nochange') {
1277: current.argfield = null;
1278: } else {
1279: current.argfield = choicearg;
1280: switch(choice) {
1281: case 'krb':
1282: currentform.elements[current.argfield].value =
1283: "$in{'kerb_def_dom'}";
1284: break;
1285: default:
1286: break;
1287: }
1288: }
1289: }
1290: return;
1291: }
1292:
1293: function changed_text(choice,currentform) {
1294: var choicearg = choice + 'arg';
1295: if (currentform.elements[choicearg].value !='') {
1296: $Javascript_toUpperCase
1297: // clear old field
1298: if ((current.argfield != choicearg) && (current.argfield != null)) {
1299: currentform.elements[current.argfield].value = '';
1300: }
1301: current.argfield = choicearg;
1302: }
1303: set_auth_radio_buttons(choice,currentform);
1304: return;
1305: }
1306:
1307: function set_auth_radio_buttons(newvalue,currentform) {
1308: var i=0;
1309: while (i < currentform.login.length) {
1310: if (currentform.login[i].value == newvalue) { break; }
1311: i++;
1312: }
1313: if (i == currentform.login.length) {
1314: return;
1315: }
1316: current.radiovalue = newvalue;
1317: currentform.login[i].checked = true;
1318: return;
1319: }
1320: END
1321: return $result;
1322: }
1323:
1324: sub authform_authorwarning{
1325: my $result='';
1326: $result='<i>'.
1327: &mt('As a general rule, only authors or co-authors should be '.
1328: 'filesystem authenticated '.
1329: '(which allows access to the server filesystem).')."</i>\n";
1330: return $result;
1331: }
1332:
1333: sub authform_nochange{
1334: my %in = (
1335: formname => 'document.cu',
1336: kerb_def_dom => 'MSU.EDU',
1337: @_,
1338: );
1339: my $result = &mt('[_1] Do not change login data',
1340: '<input type="radio" name="login" value="nochange" '.
1341: 'checked="checked" onclick="'.
1342: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1343: return $result;
1344: }
1345:
1346: sub authform_kerberos{
1347: my %in = (
1348: formname => 'document.cu',
1349: kerb_def_dom => 'MSU.EDU',
1350: kerb_def_auth => 'krb4',
1351: @_,
1352: );
1353: my ($check4,$check5,$krbarg);
1354: if ($in{'kerb_def_auth'} eq 'krb5') {
1355: $check5 = " checked=\"on\"";
1356: } else {
1357: $check4 = " checked=\"on\"";
1358: }
1359: $krbarg = $in{'kerb_def_dom'};
1360:
1361: my $krbcheck = "";
1362: if ( grep/^curr_authtype$/,(keys %in) ) {
1363: if ($in{'curr_authtype'} =~ m/^krb/) {
1364: $krbcheck = " checked=\"on\"";
1365: if ( grep/^curr_autharg$/,(keys %in) ) {
1366: $krbarg = $in{'curr_autharg'};
1367: }
1368: }
1369: }
1370:
1371: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1372: my $result .= &mt
1373: ('[_1] Kerberos authenticated with domain [_2] '.
1374: '[_3] Version 4 [_4] Version 5',
1375: '<input type="radio" name="login" value="krb" '.
1376: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1377: '<input type="text" size="10" name="krbarg" '.
1378: 'value="'.$krbarg.'" '.
1379: 'onchange="'.$jscall.'" />',
1380: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1381: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1382: return $result;
1383: }
1384:
1385: sub authform_internal{
1386: my %args = (
1387: formname => 'document.cu',
1388: kerb_def_dom => 'MSU.EDU',
1389: @_,
1390: );
1391:
1392: my $intcheck = "";
1393: my $intarg = 'value=""';
1394: if ( grep/^curr_authtype$/,(keys %args) ) {
1395: if ($args{'curr_authtype'} eq 'int') {
1396: $intcheck = " checked=\"on\"";
1397: if ( grep/^curr_autharg$/,(keys %args) ) {
1398: $intarg = "value=\"$args{'curr_autharg'}\"";
1399: }
1400: }
1401: }
1402:
1403: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1404: my $result.=&mt
1405: ('[_1] Internally authenticated (with initial password [_2])',
1406: '<input type="radio" name="login" value="int" '.$intcheck.
1407: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1408: '<input type="text" size="10" name="intarg" '.$intarg.
1409: ' onchange="'.$jscall.'" />');
1410: return $result;
1411: }
1412:
1413: sub authform_local{
1414: my %in = (
1415: formname => 'document.cu',
1416: kerb_def_dom => 'MSU.EDU',
1417: @_,
1418: );
1419:
1420: my $loccheck = "";
1421: my $locarg = 'value=""';
1422: if ( grep/^curr_authtype$/,(keys %in) ) {
1423: if ($in{'curr_authtype'} eq 'loc') {
1424: $loccheck = " checked=\"on\"";
1425: if ( grep/^curr_autharg$/,(keys %in) ) {
1426: $locarg = "value=\"$in{'curr_autharg'}\"";
1427: }
1428: }
1429: }
1430:
1431: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1432: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1433: '<input type="radio" name="login" value="loc" '.$loccheck.
1434: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1435: '<input type="text" size="10" name="locarg" '.$locarg.
1436: ' onchange="'.$jscall.'" />');
1437: return $result;
1438: }
1439:
1440: sub authform_filesystem{
1441: my %in = (
1442: formname => 'document.cu',
1443: kerb_def_dom => 'MSU.EDU',
1444: @_,
1445: );
1446: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1447: my $result.= &mt
1448: ('[_1] Filesystem Authenticated (with initial password [_2])',
1449: '<input type="radio" name="login" value="fsys" '.
1450: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1451: '<input type="text" size="10" name="fsysarg" value="" '.
1452: 'onchange="'.$jscall.'" />');
1453: return $result;
1454: }
1455:
1456: ###############################################################
1457: ## Get Authentication Defaults for Domain ##
1458: ###############################################################
1459:
1460: =pod
1461:
1462: =head1 Domains and Authentication
1463:
1464: Returns default authentication type and an associated argument as
1465: listed in file 'domain.tab'.
1466:
1467: =over 4
1468:
1469: =item * get_auth_defaults
1470:
1471: get_auth_defaults($target_domain) returns the default authentication
1472: type and an associated argument (initial password or a kerberos domain).
1473: These values are stored in lonTabs/domain.tab
1474:
1475: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1476:
1477: If target_domain is not found in domain.tab, returns nothing ('').
1478:
1479: =cut
1480:
1481: #-------------------------------------------
1482: sub get_auth_defaults {
1483: my $domain=shift;
1484: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1485: }
1486: ###############################################################
1487: ## End Get Authentication Defaults for Domain ##
1488: ###############################################################
1489:
1490: ###############################################################
1491: ## Get Kerberos Defaults for Domain ##
1492: ###############################################################
1493: ##
1494: ## Returns default kerberos version and an associated argument
1495: ## as listed in file domain.tab. If not listed, provides
1496: ## appropriate default domain and kerberos version.
1497: ##
1498: #-------------------------------------------
1499:
1500: =pod
1501:
1502: =item * get_kerberos_defaults
1503:
1504: get_kerberos_defaults($target_domain) returns the default kerberos
1505: version and domain. If not found in domain.tabs, it defaults to
1506: version 4 and the domain of the server.
1507:
1508: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1509:
1510: =cut
1511:
1512: #-------------------------------------------
1513: sub get_kerberos_defaults {
1514: my $domain=shift;
1515: my ($krbdef,$krbdefdom) =
1516: &Apache::loncommon::get_auth_defaults($domain);
1517: unless ($krbdef =~/^krb/ && $krbdefdom) {
1518: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1519: my $krbdefdom=$1;
1520: $krbdefdom=~tr/a-z/A-Z/;
1521: $krbdef = "krb4";
1522: }
1523: return ($krbdef,$krbdefdom);
1524: }
1525:
1526: =pod
1527:
1528: =back
1529:
1530: =cut
1531:
1532: ###############################################################
1533: ## Thesaurus Functions ##
1534: ###############################################################
1535:
1536: =pod
1537:
1538: =head1 Thesaurus Functions
1539:
1540: =over 4
1541:
1542: =item * initialize_keywords
1543:
1544: Initializes the package variable %Keywords if it is empty. Uses the
1545: package variable $thesaurus_db_file.
1546:
1547: =cut
1548:
1549: ###################################################
1550:
1551: sub initialize_keywords {
1552: return 1 if (scalar keys(%Keywords));
1553: # If we are here, %Keywords is empty, so fill it up
1554: # Make sure the file we need exists...
1555: if (! -e $thesaurus_db_file) {
1556: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1557: " failed because it does not exist");
1558: return 0;
1559: }
1560: # Set up the hash as a database
1561: my %thesaurus_db;
1562: if (! tie(%thesaurus_db,'GDBM_File',
1563: $thesaurus_db_file,&GDBM_READER(),0640)){
1564: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1565: $thesaurus_db_file);
1566: return 0;
1567: }
1568: # Get the average number of appearances of a word.
1569: my $avecount = $thesaurus_db{'average.count'};
1570: # Put keywords (those that appear > average) into %Keywords
1571: while (my ($word,$data)=each (%thesaurus_db)) {
1572: my ($count,undef) = split /:/,$data;
1573: $Keywords{$word}++ if ($count > $avecount);
1574: }
1575: untie %thesaurus_db;
1576: # Remove special values from %Keywords.
1577: foreach ('total.count','average.count') {
1578: delete($Keywords{$_}) if (exists($Keywords{$_}));
1579: }
1580: return 1;
1581: }
1582:
1583: ###################################################
1584:
1585: =pod
1586:
1587: =item * keyword($word)
1588:
1589: Returns true if $word is a keyword. A keyword is a word that appears more
1590: than the average number of times in the thesaurus database. Calls
1591: &initialize_keywords
1592:
1593: =cut
1594:
1595: ###################################################
1596:
1597: sub keyword {
1598: return if (!&initialize_keywords());
1599: my $word=lc(shift());
1600: $word=~s/\W//g;
1601: return exists($Keywords{$word});
1602: }
1603:
1604: ###############################################################
1605:
1606: =pod
1607:
1608: =item * get_related_words
1609:
1610: Look up a word in the thesaurus. Takes a scalar argument and returns
1611: an array of words. If the keyword is not in the thesaurus, an empty array
1612: will be returned. The order of the words returned is determined by the
1613: database which holds them.
1614:
1615: Uses global $thesaurus_db_file.
1616:
1617: =cut
1618:
1619: ###############################################################
1620: sub get_related_words {
1621: my $keyword = shift;
1622: my %thesaurus_db;
1623: if (! -e $thesaurus_db_file) {
1624: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1625: "failed because the file does not exist");
1626: return ();
1627: }
1628: if (! tie(%thesaurus_db,'GDBM_File',
1629: $thesaurus_db_file,&GDBM_READER(),0640)){
1630: return ();
1631: }
1632: my @Words=();
1633: if (exists($thesaurus_db{$keyword})) {
1634: $_ = $thesaurus_db{$keyword};
1635: (undef,@Words) = split/:/; # The first element is the number of times
1636: # the word appears. We do not need it now.
1637: for (my $i=0;$i<=$#Words;$i++) {
1638: ($Words[$i],undef)= split/\,/,$Words[$i];
1639: }
1640: }
1641: untie %thesaurus_db;
1642: return @Words;
1643: }
1644:
1645: =pod
1646:
1647: =back
1648:
1649: =cut
1650:
1651: # -------------------------------------------------------------- Plaintext name
1652: =pod
1653:
1654: =head1 User Name Functions
1655:
1656: =over 4
1657:
1658: =item * plainname($uname,$udom)
1659:
1660: Takes a users logon name and returns it as a string in
1661: "first middle last generation" form
1662:
1663: =cut
1664:
1665: ###############################################################
1666: sub plainname {
1667: my ($uname,$udom)=@_;
1668: my %names=&Apache::lonnet::get('environment',
1669: ['firstname','middlename','lastname','generation'],
1670: $udom,$uname);
1671: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1672: $names{'lastname'}.' '.$names{'generation'};
1673: $name=~s/\s+$//;
1674: $name=~s/\s+/ /g;
1675: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1676: return $name;
1677: }
1678:
1679: # -------------------------------------------------------------------- Nickname
1680: =pod
1681:
1682: =item * nickname($uname,$udom)
1683:
1684: Gets a users name and returns it as a string as
1685:
1686: ""nickname""
1687:
1688: if the user has a nickname or
1689:
1690: "first middle last generation"
1691:
1692: if the user does not
1693:
1694: =cut
1695:
1696: sub nickname {
1697: my ($uname,$udom)=@_;
1698: my %names=&Apache::lonnet::get('environment',
1699: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1700: my $name=$names{'nickname'};
1701: if ($name) {
1702: $name='"'.$name.'"';
1703: } else {
1704: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1705: $names{'lastname'}.' '.$names{'generation'};
1706: $name=~s/\s+$//;
1707: $name=~s/\s+/ /g;
1708: }
1709: return $name;
1710: }
1711:
1712:
1713: # ------------------------------------------------------------------ Screenname
1714:
1715: =pod
1716:
1717: =item * screenname($uname,$udom)
1718:
1719: Gets a users screenname and returns it as a string
1720:
1721: =cut
1722:
1723: sub screenname {
1724: my ($uname,$udom)=@_;
1725: my %names=
1726: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1727: return $names{'screenname'};
1728: }
1729:
1730: # ------------------------------------------------------------- Message Wrapper
1731:
1732: sub messagewrapper {
1733: my ($link,$un,$do)=@_;
1734: return
1735: "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
1736: }
1737: # --------------------------------------------------------------- Notes Wrapper
1738:
1739: sub noteswrapper {
1740: my ($link,$un,$do)=@_;
1741: return
1742: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1743: }
1744: # ------------------------------------------------------------- Aboutme Wrapper
1745:
1746: sub aboutmewrapper {
1747: my ($link,$username,$domain,$target)=@_;
1748: return "<a href='/adm/$domain/$username/aboutme'".
1749: ($target?" target='$target'":'').">$link</a>";
1750: }
1751:
1752: # ------------------------------------------------------------ Syllabus Wrapper
1753:
1754:
1755: sub syllabuswrapper {
1756: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1757: if ($fontcolor) {
1758: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1759: }
1760: return "<a href='/public/$domain/$coursedir/syllabus'>$linktext</a>";
1761: }
1762:
1763: =pod
1764:
1765: =back
1766:
1767: =head1 Access .tab File Data
1768:
1769: =over 4
1770:
1771: =item * languageids()
1772:
1773: returns list of all language ids
1774:
1775: =cut
1776:
1777: sub languageids {
1778: return sort(keys(%language));
1779: }
1780:
1781: =pod
1782:
1783: =item * languagedescription()
1784:
1785: returns description of a specified language id
1786:
1787: =cut
1788:
1789: sub languagedescription {
1790: my $code=shift;
1791: return ($supported_language{$code}?'* ':'').
1792: $language{$code}.
1793: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1794: }
1795:
1796: sub plainlanguagedescription {
1797: my $code=shift;
1798: return $language{$code};
1799: }
1800:
1801: sub supportedlanguagecode {
1802: my $code=shift;
1803: return $supported_language{$code};
1804: }
1805:
1806: =pod
1807:
1808: =item * copyrightids()
1809:
1810: returns list of all copyrights
1811:
1812: =cut
1813:
1814: sub copyrightids {
1815: return sort(keys(%cprtag));
1816: }
1817:
1818: =pod
1819:
1820: =item * copyrightdescription()
1821:
1822: returns description of a specified copyright id
1823:
1824: =cut
1825:
1826: sub copyrightdescription {
1827: return &mt($cprtag{shift(@_)});
1828: }
1829: =item * source_copyrightids()
1830:
1831: returns list of all source copyrights
1832:
1833: =cut
1834:
1835: sub source_copyrightids {
1836: return sort(keys(%scprtag));
1837: }
1838:
1839: =pod
1840:
1841: =item * source_copyrightdescription()
1842:
1843: returns description of a specified source copyright id
1844:
1845: =cut
1846:
1847: sub source_copyrightdescription {
1848: return &mt($scprtag{shift(@_)});
1849: }
1850:
1851: =pod
1852:
1853: =item * filecategories()
1854:
1855: returns list of all file categories
1856:
1857: =cut
1858:
1859: sub filecategories {
1860: return sort(keys(%category_extensions));
1861: }
1862:
1863: =pod
1864:
1865: =item * filecategorytypes()
1866:
1867: returns list of file types belonging to a given file
1868: category
1869:
1870: =cut
1871:
1872: sub filecategorytypes {
1873: return @{$category_extensions{lc($_[0])}};
1874: }
1875:
1876: =pod
1877:
1878: =item * fileembstyle()
1879:
1880: returns embedding style for a specified file type
1881:
1882: =cut
1883:
1884: sub fileembstyle {
1885: return $fe{lc(shift(@_))};
1886: }
1887:
1888:
1889: sub filecategoryselect {
1890: my ($name,$value)=@_;
1891: return &select_form($value,$name,
1892: '' => &mt('Any category'),
1893: map { $_,$_ } sort(keys(%category_extensions)));
1894: }
1895:
1896: =pod
1897:
1898: =item * filedescription()
1899:
1900: returns description for a specified file type
1901:
1902: =cut
1903:
1904: sub filedescription {
1905: my $file_description = $fd{lc(shift())};
1906: $file_description =~ s:([\[\]]):~$1:g;
1907: return &mt($file_description);
1908: }
1909:
1910: =pod
1911:
1912: =item * filedescriptionex()
1913:
1914: returns description for a specified file type with
1915: extra formatting
1916:
1917: =cut
1918:
1919: sub filedescriptionex {
1920: my $ex=shift;
1921: my $file_description = $fd{lc($ex)};
1922: $file_description =~ s:([\[\]]):~$1:g;
1923: return '.'.$ex.' '.&mt($file_description);
1924: }
1925:
1926: # End of .tab access
1927: =pod
1928:
1929: =back
1930:
1931: =cut
1932:
1933: # ------------------------------------------------------------------ File Types
1934: sub fileextensions {
1935: return sort(keys(%fe));
1936: }
1937:
1938: # ----------------------------------------------------------- Display Languages
1939: # returns a hash with all desired display languages
1940: #
1941:
1942: sub display_languages {
1943: my %languages=();
1944: foreach (&preferred_languages()) {
1945: $languages{$_}=1;
1946: }
1947: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1948: if ($ENV{'form.displaylanguage'}) {
1949: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
1950: $languages{$_}=1;
1951: }
1952: }
1953: return %languages;
1954: }
1955:
1956: sub preferred_languages {
1957: my @languages=();
1958: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
1959: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
1960: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
1961: }
1962: if ($ENV{'environment.languages'}) {
1963: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
1964: }
1965: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
1966: if ($browser) {
1967: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
1968: }
1969: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
1970: @languages=(@languages,
1971: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
1972: }
1973: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
1974: @languages=(@languages,
1975: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
1976: }
1977: if ($Apache::lonnet::domain_lang_def{
1978: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
1979: @languages=(@languages,
1980: $Apache::lonnet::domain_lang_def{
1981: $Apache::lonnet::perlvar{'lonDefDomain'}});
1982: }
1983: # turn "en-ca" into "en-ca,en"
1984: my @genlanguages;
1985: foreach (@languages) {
1986: unless ($_=~/\w/) { next; }
1987: push (@genlanguages,$_);
1988: if ($_=~/(\-|\_)/) {
1989: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
1990: }
1991: }
1992: return @genlanguages;
1993: }
1994:
1995: ###############################################################
1996: ## Student Answer Attempts ##
1997: ###############################################################
1998:
1999: =pod
2000:
2001: =head1 Alternate Problem Views
2002:
2003: =over 4
2004:
2005: =item * get_previous_attempt($symb, $username, $domain, $course,
2006: $getattempt, $regexp, $gradesub)
2007:
2008: Return string with previous attempt on problem. Arguments:
2009:
2010: =over 4
2011:
2012: =item * $symb: Problem, including path
2013:
2014: =item * $username: username of the desired student
2015:
2016: =item * $domain: domain of the desired student
2017:
2018: =item * $course: Course ID
2019:
2020: =item * $getattempt: Leave blank for all attempts, otherwise put
2021: something
2022:
2023: =item * $regexp: if string matches this regexp, the string will be
2024: sent to $gradesub
2025:
2026: =item * $gradesub: routine that processes the string if it matches $regexp
2027:
2028: =back
2029:
2030: The output string is a table containing all desired attempts, if any.
2031:
2032: =cut
2033:
2034: sub get_previous_attempt {
2035: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2036: my $prevattempts='';
2037: no strict 'refs';
2038: if ($symb) {
2039: my (%returnhash)=
2040: &Apache::lonnet::restore($symb,$course,$domain,$username);
2041: if ($returnhash{'version'}) {
2042: my %lasthash=();
2043: my $version;
2044: for ($version=1;$version<=$returnhash{'version'};$version++) {
2045: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2046: $lasthash{$_}=$returnhash{$version.':'.$_};
2047: }
2048: }
2049: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2050: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2051: foreach (sort(keys %lasthash)) {
2052: my ($ign,@parts) = split(/\./,$_);
2053: if ($#parts > 0) {
2054: my $data=$parts[-1];
2055: pop(@parts);
2056: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2057: } else {
2058: if ($#parts == 0) {
2059: $prevattempts.='<th>'.$parts[0].'</th>';
2060: } else {
2061: $prevattempts.='<th>'.$ign.'</th>';
2062: }
2063: }
2064: }
2065: if ($getattempt eq '') {
2066: for ($version=1;$version<=$returnhash{'version'};$version++) {
2067: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2068: foreach (sort(keys %lasthash)) {
2069: my $value;
2070: if ($_ =~ /timestamp/) {
2071: $value=scalar(localtime($returnhash{$version.':'.$_}));
2072: } else {
2073: $value=$returnhash{$version.':'.$_};
2074: }
2075: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2076: }
2077: }
2078: }
2079: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2080: foreach (sort(keys %lasthash)) {
2081: my $value;
2082: if ($_ =~ /timestamp/) {
2083: $value=scalar(localtime($lasthash{$_}));
2084: } else {
2085: $value=$lasthash{$_};
2086: }
2087: $value=&Apache::lonnet::unescape($value);
2088: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2089: $prevattempts.='<td>'.$value.' </td>';
2090: }
2091: $prevattempts.='</tr></table></td></tr></table>';
2092: } else {
2093: $prevattempts='Nothing submitted - no attempts.';
2094: }
2095: } else {
2096: $prevattempts='No data.';
2097: }
2098: }
2099:
2100: sub relative_to_absolute {
2101: my ($url,$output)=@_;
2102: my $parser=HTML::TokeParser->new(\$output);
2103: my $token;
2104: my $thisdir=$url;
2105: my @rlinks=();
2106: while ($token=$parser->get_token) {
2107: if ($token->[0] eq 'S') {
2108: if ($token->[1] eq 'a') {
2109: if ($token->[2]->{'href'}) {
2110: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2111: }
2112: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2113: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2114: } elsif ($token->[1] eq 'base') {
2115: $thisdir=$token->[2]->{'href'};
2116: }
2117: }
2118: }
2119: $thisdir=~s-/[^/]*$--;
2120: foreach (@rlinks) {
2121: unless (($_=~/^http:\/\//i) ||
2122: ($_=~/^\//) ||
2123: ($_=~/^javascript:/i) ||
2124: ($_=~/^mailto:/i) ||
2125: ($_=~/^\#/)) {
2126: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2127: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2128: }
2129: }
2130: # -------------------------------------------------- Deal with Applet codebases
2131: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2132: return $output;
2133: }
2134:
2135: =pod
2136:
2137: =item * get_student_view
2138:
2139: show a snapshot of what student was looking at
2140:
2141: =cut
2142:
2143: sub get_student_view {
2144: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2145: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2146: my (%form);
2147: my @elements=('symb','courseid','domain','username');
2148: foreach my $element (@elements) {
2149: $form{'grade_'.$element}=eval '$'.$element #'
2150: }
2151: if (defined($moreenv)) {
2152: %form=(%form,%{$moreenv});
2153: }
2154: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2155: $feedurl=&Apache::lonnet::clutter($feedurl);
2156: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2157: $userview=~s/\<body[^\>]*\>//gi;
2158: $userview=~s/\<\/body\>//gi;
2159: $userview=~s/\<html\>//gi;
2160: $userview=~s/\<\/html\>//gi;
2161: $userview=~s/\<head\>//gi;
2162: $userview=~s/\<\/head\>//gi;
2163: $userview=~s/action\s*\=/would_be_action\=/gi;
2164: $userview=&relative_to_absolute($feedurl,$userview);
2165: return $userview;
2166: }
2167:
2168: =pod
2169:
2170: =item * get_student_answers()
2171:
2172: show a snapshot of how student was answering problem
2173:
2174: =cut
2175:
2176: sub get_student_answers {
2177: my ($symb,$username,$domain,$courseid,%form) = @_;
2178: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2179: my (%moreenv);
2180: my @elements=('symb','courseid','domain','username');
2181: foreach my $element (@elements) {
2182: $moreenv{'grade_'.$element}=eval '$'.$element #'
2183: }
2184: $moreenv{'grade_target'}='answer';
2185: %moreenv=(%form,%moreenv);
2186: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2187: return $userview;
2188: }
2189:
2190: =pod
2191:
2192: =item * &submlink()
2193:
2194: Inputs: $text $uname $udom $symb
2195:
2196: Returns: A link to grades.pm such as to see the SUBM view of a student
2197:
2198: =cut
2199:
2200: ###############################################
2201: sub submlink {
2202: my ($text,$uname,$udom,$symb)=@_;
2203: if (!($uname && $udom)) {
2204: (my $cursymb, my $courseid,$udom,$uname)=
2205: &Apache::lonxml::whichuser($symb);
2206: if (!$symb) { $symb=$cursymb; }
2207: }
2208: if (!$symb) { $symb=&symbread(); }
2209: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2210: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2211: }
2212: ##############################################
2213:
2214: =pod
2215:
2216: =back
2217:
2218: =cut
2219:
2220: ###############################################
2221:
2222:
2223: sub timehash {
2224: my @ltime=localtime(shift);
2225: return ( 'seconds' => $ltime[0],
2226: 'minutes' => $ltime[1],
2227: 'hours' => $ltime[2],
2228: 'day' => $ltime[3],
2229: 'month' => $ltime[4]+1,
2230: 'year' => $ltime[5]+1900,
2231: 'weekday' => $ltime[6],
2232: 'dayyear' => $ltime[7]+1,
2233: 'dlsav' => $ltime[8] );
2234: }
2235:
2236: sub maketime {
2237: my %th=@_;
2238: return POSIX::mktime(
2239: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2240: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
2241: }
2242:
2243: #########################################
2244:
2245: sub findallcourses {
2246: my %courses=();
2247: my $now=time;
2248: foreach (keys %ENV) {
2249: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2250: my ($starttime,$endtime)=$ENV{$_};
2251: my $active=1;
2252: if ($starttime) {
2253: if ($now<$starttime) { $active=0; }
2254: }
2255: if ($endtime) {
2256: if ($now>$endtime) { $active=0; }
2257: }
2258: if ($active) { $courses{$1.'_'.$2}=1; }
2259: }
2260: }
2261: return keys %courses;
2262: }
2263:
2264: ###############################################
2265: ###############################################
2266:
2267: =pod
2268:
2269: =head1 Domain Template Functions
2270:
2271: =over 4
2272:
2273: =item * &determinedomain()
2274:
2275: Inputs: $domain (usually will be undef)
2276:
2277: Returns: Determines which domain should be used for designs
2278:
2279: =cut
2280:
2281: ###############################################
2282: sub determinedomain {
2283: my $domain=shift;
2284: if (! $domain) {
2285: # Determine domain if we have not been given one
2286: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2287: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2288: if ($ENV{'request.role.domain'}) {
2289: $domain=$ENV{'request.role.domain'};
2290: }
2291: }
2292: return $domain;
2293: }
2294: ###############################################
2295: =pod
2296:
2297: =item * &domainlogo()
2298:
2299: Inputs: $domain (usually will be undef)
2300:
2301: Returns: A link to a domain logo, if the domain logo exists.
2302: If the domain logo does not exist, a description of the domain.
2303:
2304: =cut
2305:
2306: ###############################################
2307: sub domainlogo {
2308: my $domain = &determinedomain(shift);
2309: # See if there is a logo
2310: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2311: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2312: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2313: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
2314: '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
2315: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2316: return $Apache::lonnet::domaindescription{$domain};
2317: } else {
2318: return '';
2319: }
2320: }
2321: ##############################################
2322:
2323: =pod
2324:
2325: =item * &designparm()
2326:
2327: Inputs: $which parameter; $domain (usually will be undef)
2328:
2329: Returns: value of designparamter $which
2330:
2331: =cut
2332:
2333: ##############################################
2334: sub designparm {
2335: my ($which,$domain)=@_;
2336: if ($ENV{'browser.blackwhite'} eq 'on') {
2337: if ($which=~/\.(font|alink|vlink|link)$/) {
2338: return '#000000';
2339: }
2340: if ($which=~/\.(pgbg|sidebg)$/) {
2341: return '#FFFFFF';
2342: }
2343: if ($which=~/\.tabbg$/) {
2344: return '#CCCCCC';
2345: }
2346: }
2347: if ($ENV{'environment.color.'.$which}) {
2348: return $ENV{'environment.color.'.$which};
2349: }
2350: $domain=&determinedomain($domain);
2351: if ($designhash{$domain.'.'.$which}) {
2352: return $designhash{$domain.'.'.$which};
2353: } else {
2354: return $designhash{'default.'.$which};
2355: }
2356: }
2357:
2358: ###############################################
2359: ###############################################
2360:
2361: =pod
2362:
2363: =back
2364:
2365: =head1 HTTP Helpers
2366:
2367: =over 4
2368:
2369: =item * &bodytag()
2370:
2371: Returns a uniform header for LON-CAPA web pages.
2372:
2373: Inputs:
2374:
2375: =over 4
2376:
2377: =item * $title, A title to be displayed on the page.
2378:
2379: =item * $function, the current role (can be undef).
2380:
2381: =item * $addentries, extra parameters for the <body> tag.
2382:
2383: =item * $bodyonly, if defined, only return the <body> tag.
2384:
2385: =item * $domain, if defined, force a given domain.
2386:
2387: =item * $forcereg, if page should register as content page (relevant for
2388: text interface only)
2389:
2390: =back
2391:
2392: Returns: A uniform header for LON-CAPA web pages.
2393: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2394: If $bodyonly is undef or zero, an html string containing a <body> tag and
2395: other decorations will be returned.
2396:
2397: =cut
2398:
2399: sub bodytag {
2400: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2401: $title=&mt($title);
2402: $function = &get_users_function() if (!$function);
2403: my $img=&designparm($function.'.img',$domain);
2404: my $pgbg=&designparm($function.'.pgbg',$domain);
2405: my $tabbg=&designparm($function.'.tabbg',$domain);
2406: my $font=&designparm($function.'.font',$domain);
2407: my $link=&designparm($function.'.link',$domain);
2408: my $alink=&designparm($function.'.alink',$domain);
2409: my $vlink=&designparm($function.'.vlink',$domain);
2410: my $sidebg=&designparm($function.'.sidebg',$domain);
2411: # Accessibility font enhance
2412: unless ($addentries) { $addentries=''; }
2413: my $addstyle='';
2414: if ($ENV{'browser.fontenhance'} eq 'on') {
2415: $addstyle=' font-size: x-large;';
2416: }
2417: # role and realm
2418: my ($role,$realm)
2419: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2420: # realm
2421: if ($ENV{'request.course.id'}) {
2422: $realm=
2423: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2424: }
2425: unless ($realm) { $realm=' '; }
2426: # Set messages
2427: my $messages=&domainlogo($domain);
2428: # Port for miniserver
2429: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2430: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2431: # construct main body tag
2432: my $bodytag = <<END;
2433: <style>
2434: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2435: a:focus { color: red; background: yellow }
2436: </style>
2437: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2438: style="margin-top: 0px;$addstyle" $addentries>
2439: END
2440: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2441: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2442: if ($bodyonly) {
2443: return $bodytag;
2444: } elsif ($ENV{'browser.interface'} eq 'textual') {
2445: # Accessibility
2446: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2447: $forcereg).
2448: '<h1>LON-CAPA: '.$title.'</h1>';
2449: } elsif ($ENV{'environment.remote'} eq 'off') {
2450: # No Remote
2451: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2452: $forcereg).
2453: '<table bgcolor="'.$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.
2454: '</b></font></td></tr></table>';
2455: }
2456:
2457: #
2458: # Top frame rendering, Remote is up
2459: #
2460: return(<<ENDBODY);
2461: $bodytag
2462: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2463: <tr><td bgcolor="$sidebg">
2464: $upperleft</td>
2465: <td bgcolor="$sidebg" align="right">$messages </td>
2466: </tr>
2467: <tr>
2468: <td rowspan="3" bgcolor="$tabbg">
2469: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2470: <td bgcolor="$tabbg" align="right">
2471: <font size="2" face="Arial, Helvetica, sans-serif">
2472: $ENV{'environment.firstname'}
2473: $ENV{'environment.middlename'}
2474: $ENV{'environment.lastname'}
2475: $ENV{'environment.generation'}
2476: </font>
2477: </td>
2478: </tr>
2479: <tr><td bgcolor="$tabbg" align="right">
2480: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2481: </td></tr>
2482: <tr>
2483: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2484: </table><br>
2485: ENDBODY
2486: }
2487:
2488: ###############################################
2489:
2490: =pod
2491:
2492: =item get_users_function
2493:
2494: Used by &bodytag to determine the current users primary role.
2495: Returns either 'student','coordinator','admin', or 'author'.
2496:
2497: =cut
2498:
2499: ###############################################
2500: sub get_users_function {
2501: my $function = 'student';
2502: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2503: $function='coordinator';
2504: }
2505: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2506: $function='admin';
2507: }
2508: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2509: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2510: $function='author';
2511: }
2512: return $function;
2513: }
2514:
2515: ###############################################
2516:
2517: sub get_posted_cgi {
2518: my $r=shift;
2519:
2520: my $buffer;
2521:
2522: $r->read($buffer,$r->header_in('Content-length'),0);
2523: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2524: my @pairs=split(/&/,$buffer);
2525: my $pair;
2526: foreach $pair (@pairs) {
2527: my ($name,$value) = split(/=/,$pair);
2528: $value =~ tr/+/ /;
2529: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2530: $name =~ tr/+/ /;
2531: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2532: &add_to_env("form.$name",$value);
2533: }
2534: } else {
2535: my $contentsep=$1;
2536: my @lines = split (/\n/,$buffer);
2537: my $name='';
2538: my $value='';
2539: my $fname='';
2540: my $fmime='';
2541: my $i;
2542: for ($i=0;$i<=$#lines;$i++) {
2543: if ($lines[$i]=~/^$contentsep/) {
2544: if ($name) {
2545: chomp($value);
2546: if ($fname) {
2547: $ENV{"form.$name.filename"}=$fname;
2548: $ENV{"form.$name.mimetype"}=$fmime;
2549: } else {
2550: $value=~s/\s+$//s;
2551: }
2552: &add_to_env("form.$name",$value);
2553: }
2554: if ($i<$#lines) {
2555: $i++;
2556: $lines[$i]=~
2557: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2558: $name=$1;
2559: $value='';
2560: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2561: $fname=$1;
2562: if
2563: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2564: $fmime=$1;
2565: $i++;
2566: } else {
2567: $fmime='';
2568: }
2569: } else {
2570: $fname='';
2571: $fmime='';
2572: }
2573: $i++;
2574: }
2575: } else {
2576: $value.=$lines[$i]."\n";
2577: }
2578: }
2579: }
2580: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2581: $r->method_number(M_GET);
2582: $r->method('GET');
2583: $r->headers_in->unset('Content-length');
2584: }
2585:
2586: =pod
2587:
2588: =item * get_unprocessed_cgi($query,$possible_names)
2589:
2590: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2591: $query. The parameters listed in $possible_names (an array reference),
2592: will be set in $ENV{'form.name'} if they do not already exist.
2593:
2594: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2595: $possible_names is an ref to an array of form element names. As an example:
2596: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2597: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2598:
2599: =cut
2600:
2601: sub get_unprocessed_cgi {
2602: my ($query,$possible_names)= @_;
2603: # $Apache::lonxml::debug=1;
2604: foreach (split(/&/,$query)) {
2605: my ($name, $value) = split(/=/,$_);
2606: $name = &Apache::lonnet::unescape($name);
2607: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2608: $value =~ tr/+/ /;
2609: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2610: &Apache::lonxml::debug("Seting :$name: to :$value:");
2611: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2612: }
2613: }
2614: }
2615:
2616: =pod
2617:
2618: =item * cacheheader()
2619:
2620: returns cache-controlling header code
2621:
2622: =cut
2623:
2624: sub cacheheader {
2625: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2626: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2627: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2628: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2629: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2630: return $output;
2631: }
2632:
2633: =pod
2634:
2635: =item * no_cache($r)
2636:
2637: specifies header code to not have cache
2638:
2639: =cut
2640:
2641: sub no_cache {
2642: my ($r) = @_;
2643: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2644: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2645: $r->no_cache(1);
2646: $r->header_out("Pragma" => "no-cache");
2647: #$r->header_out("Expires" => $date);
2648: }
2649:
2650: sub content_type {
2651: my ($r,$type,$charset) = @_;
2652: unless ($charset) {
2653: $charset=&Apache::lonlocal::current_encoding;
2654: }
2655: if ($charset) { $type.='; charset='.$charset; }
2656: if ($r) {
2657: $r->content_type($type);
2658: } else {
2659: print("Content-type: $type\n\n");
2660: }
2661: }
2662:
2663: =pod
2664:
2665: =item * add_to_env($name,$value)
2666:
2667: adds $name to the %ENV hash with value
2668: $value, if $name already exists, the entry is converted to an array
2669: reference and $value is added to the array.
2670:
2671: =cut
2672:
2673: sub add_to_env {
2674: my ($name,$value)=@_;
2675: if (defined($ENV{$name})) {
2676: if (ref($ENV{$name})) {
2677: #already have multiple values
2678: push(@{ $ENV{$name} },$value);
2679: } else {
2680: #first time seeing multiple values, convert hash entry to an arrayref
2681: my $first=$ENV{$name};
2682: undef($ENV{$name});
2683: push(@{ $ENV{$name} },$first,$value);
2684: }
2685: } else {
2686: $ENV{$name}=$value;
2687: }
2688: }
2689:
2690: =pod
2691:
2692: =item * get_env_multiple($name)
2693:
2694: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2695: values may be defined and end up as an array ref.
2696:
2697: returns an array of values
2698:
2699: =cut
2700:
2701: sub get_env_multiple {
2702: my ($name) = @_;
2703: my @values;
2704: if (defined($ENV{$name})) {
2705: # exists is it an array
2706: if (ref($ENV{$name})) {
2707: @values=@{ $ENV{$name} };
2708: } else {
2709: $values[0]=$ENV{$name};
2710: }
2711: }
2712: return(@values);
2713: }
2714:
2715:
2716: =pod
2717:
2718: =back
2719:
2720: =head1 CSV Upload/Handling functions
2721:
2722: =over 4
2723:
2724: =item * upfile_store($r)
2725:
2726: Store uploaded file, $r should be the HTTP Request object,
2727: needs $ENV{'form.upfile'}
2728: returns $datatoken to be put into hidden field
2729:
2730: =cut
2731:
2732: sub upfile_store {
2733: my $r=shift;
2734: $ENV{'form.upfile'}=~s/\r/\n/gs;
2735: $ENV{'form.upfile'}=~s/\f/\n/gs;
2736: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2737: $ENV{'form.upfile'}=~s/\n+$//gs;
2738:
2739: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2740: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2741: {
2742: my $datafile = $r->dir_config('lonDaemons').
2743: '/tmp/'.$datatoken.'.tmp';
2744: if ( open(my $fh,">$datafile") ) {
2745: print $fh $ENV{'form.upfile'};
2746: close($fh);
2747: }
2748: }
2749: return $datatoken;
2750: }
2751:
2752: =pod
2753:
2754: =item * load_tmp_file($r)
2755:
2756: Load uploaded file from tmp, $r should be the HTTP Request object,
2757: needs $ENV{'form.datatoken'},
2758: sets $ENV{'form.upfile'} to the contents of the file
2759:
2760: =cut
2761:
2762: sub load_tmp_file {
2763: my $r=shift;
2764: my @studentdata=();
2765: {
2766: my $studentfile = $r->dir_config('lonDaemons').
2767: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2768: if ( open(my $fh,"<$studentfile") ) {
2769: @studentdata=<$fh>;
2770: close($fh);
2771: }
2772: }
2773: $ENV{'form.upfile'}=join('',@studentdata);
2774: }
2775:
2776: =pod
2777:
2778: =item * upfile_record_sep()
2779:
2780: Separate uploaded file into records
2781: returns array of records,
2782: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2783:
2784: =cut
2785:
2786: sub upfile_record_sep {
2787: if ($ENV{'form.upfiletype'} eq 'xml') {
2788: } else {
2789: return split(/\n/,$ENV{'form.upfile'});
2790: }
2791: }
2792:
2793: =pod
2794:
2795: =item * record_sep($record)
2796:
2797: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2798:
2799: =cut
2800:
2801: sub record_sep {
2802: my $record=shift;
2803: my %components=();
2804: if ($ENV{'form.upfiletype'} eq 'xml') {
2805: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2806: my $i=0;
2807: foreach (split(/\s+/,$record)) {
2808: my $field=$_;
2809: $field=~s/^(\"|\')//;
2810: $field=~s/(\"|\')$//;
2811: $components{$i}=$field;
2812: $i++;
2813: }
2814: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2815: my $i=0;
2816: foreach (split(/\t/,$record)) {
2817: my $field=$_;
2818: $field=~s/^(\"|\')//;
2819: $field=~s/(\"|\')$//;
2820: $components{$i}=$field;
2821: $i++;
2822: }
2823: } else {
2824: my @allfields=split(/\,/,$record);
2825: my $i=0;
2826: my $j;
2827: for ($j=0;$j<=$#allfields;$j++) {
2828: my $field=$allfields[$j];
2829: if ($field=~/^\s*(\"|\')/) {
2830: my $delimiter=$1;
2831: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2832: $j++;
2833: $field.=','.$allfields[$j];
2834: }
2835: $field=~s/^\s*$delimiter//;
2836: $field=~s/$delimiter\s*$//;
2837: }
2838: $components{$i}=$field;
2839: $i++;
2840: }
2841: }
2842: return %components;
2843: }
2844:
2845: ######################################################
2846: ######################################################
2847:
2848: =pod
2849:
2850: =item * upfile_select_html()
2851:
2852: Return HTML code to select a file from the users machine and specify
2853: the file type.
2854:
2855: =cut
2856:
2857: ######################################################
2858: ######################################################
2859: sub upfile_select_html {
2860: my %Types = (
2861: csv => &mt('CSV (comma separated values, spreadsheet)'),
2862: space => &mt('Space separated'),
2863: tab => &mt('Tabulator separated'),
2864: # xml => &mt('HTML/XML'),
2865: );
2866: my $Str = '<input type="file" name="upfile" size="50" />'.
2867: '<br />Type: <select name="upfiletype">';
2868: foreach my $type (sort(keys(%Types))) {
2869: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
2870: }
2871: $Str .= "</select>\n";
2872: return $Str;
2873: }
2874:
2875: ######################################################
2876: ######################################################
2877:
2878: =pod
2879:
2880: =item * csv_print_samples($r,$records)
2881:
2882: Prints a table of sample values from each column uploaded $r is an
2883: Apache Request ref, $records is an arrayref from
2884: &Apache::loncommon::upfile_record_sep
2885:
2886: =cut
2887:
2888: ######################################################
2889: ######################################################
2890: sub csv_print_samples {
2891: my ($r,$records) = @_;
2892: my (%sone,%stwo,%sthree);
2893: %sone=&record_sep($$records[0]);
2894: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2895: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2896: #
2897: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
2898: foreach (sort({$a <=> $b} keys(%sone))) {
2899: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
2900: $r->print('</tr>');
2901: foreach my $hash (\%sone,\%stwo,\%sthree) {
2902: $r->print('<tr>');
2903: foreach (sort({$a <=> $b} keys(%sone))) {
2904: $r->print('<td>');
2905: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
2906: $r->print('</td>');
2907: }
2908: $r->print('</tr>');
2909: }
2910: $r->print('</tr></table><br />'."\n");
2911: }
2912:
2913: ######################################################
2914: ######################################################
2915:
2916: =pod
2917:
2918: =item * csv_print_select_table($r,$records,$d)
2919:
2920: Prints a table to create associations between values and table columns.
2921:
2922: $r is an Apache Request ref,
2923: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2924: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
2925:
2926: =cut
2927:
2928: ######################################################
2929: ######################################################
2930: sub csv_print_select_table {
2931: my ($r,$records,$d) = @_;
2932: my $i=0;my %sone;
2933: %sone=&record_sep($$records[0]);
2934: $r->print(&mt('Associate columns with student attributes.')."\n".
2935: '<table border="2"><tr>'.
2936: '<th>'.&mt('Attribute').'</th>'.
2937: '<th>'.&mt('Column').'</th></tr>'."\n");
2938: foreach (@$d) {
2939: my ($value,$display,$defaultcol)=@{ $_ };
2940: $r->print('<tr><td>'.$display.'</td>');
2941:
2942: $r->print('<td><select name=f'.$i.
2943: ' onchange="javascript:flip(this.form,'.$i.');">');
2944: $r->print('<option value="none"></option>');
2945: foreach (sort({$a <=> $b} keys(%sone))) {
2946: $r->print('<option value="'.$_.'"'.
2947: ($_ eq $defaultcol ? ' selected ' : '').
2948: '>Column '.($_+1).'</option>');
2949: }
2950: $r->print('</select></td></tr>'."\n");
2951: $i++;
2952: }
2953: $i--;
2954: return $i;
2955: }
2956:
2957: ######################################################
2958: ######################################################
2959:
2960: =pod
2961:
2962: =item * csv_samples_select_table($r,$records,$d)
2963:
2964: Prints a table of sample values from the upload and can make associate samples to internal names.
2965:
2966: $r is an Apache Request ref,
2967: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2968: $d is an array of 2 element arrays (internal name, displayed name)
2969:
2970: =cut
2971:
2972: ######################################################
2973: ######################################################
2974: sub csv_samples_select_table {
2975: my ($r,$records,$d) = @_;
2976: my %sone; my %stwo; my %sthree;
2977: my $i=0;
2978: #
2979: $r->print('<table border=2><tr><th>'.
2980: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
2981: %sone=&record_sep($$records[0]);
2982: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2983: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2984: #
2985: foreach (sort keys %sone) {
2986: $r->print('<tr><td><select name="f'.$i.'"'.
2987: ' onchange="javascript:flip(this.form,'.$i.');">');
2988: foreach (@$d) {
2989: my ($value,$display,$defaultcol)=@{ $_ };
2990: $r->print('<option value="'.$value.'"'.
2991: ($i eq $defaultcol ? ' selected ':'').'>'.
2992: $display.'</option>');
2993: }
2994: $r->print('</select></td><td>');
2995: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
2996: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
2997: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
2998: $r->print('</td></tr>');
2999: $i++;
3000: }
3001: $i--;
3002: return($i);
3003: }
3004:
3005: ######################################################
3006: ######################################################
3007:
3008: =pod
3009:
3010: =item clean_excel_name($name)
3011:
3012: Returns a replacement for $name which does not contain any illegal characters.
3013:
3014: =cut
3015:
3016: ######################################################
3017: ######################################################
3018: sub clean_excel_name {
3019: my ($name) = @_;
3020: $name =~ s/[:\*\?\/\\]//g;
3021: if (length($name) > 31) {
3022: $name = substr($name,0,31);
3023: }
3024: return $name;
3025: }
3026:
3027: =pod
3028:
3029: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3030:
3031: Returns either 1 or undef
3032:
3033: 1 if the part is to be hidden, undef if it is to be shown
3034:
3035: Arguments are:
3036:
3037: $id the id of the part to be checked
3038: $symb, optional the symb of the resource to check
3039: $udom, optional the domain of the user to check for
3040: $uname, optional the username of the user to check for
3041:
3042: =cut
3043:
3044: sub check_if_partid_hidden {
3045: my ($id,$symb,$udom,$uname) = @_;
3046: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3047: $symb,$udom,$uname);
3048: my $truth=1;
3049: #if the string starts with !, then the list is the list to show not hide
3050: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3051: my @hiddenlist=split(/,/,$hiddenparts);
3052: foreach my $checkid (@hiddenlist) {
3053: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3054: }
3055: return !$truth;
3056: }
3057:
3058:
3059: ############################################################
3060: ############################################################
3061:
3062: =pod
3063:
3064: =back
3065:
3066: =head1 cgi-bin script and graphing routines
3067:
3068: =over 4
3069:
3070: =item get_cgi_id
3071:
3072: Inputs: none
3073:
3074: Returns an id which can be used to pass environment variables
3075: to various cgi-bin scripts. These environment variables will
3076: be removed from the users environment after a given time by
3077: the routine &Apache::lonnet::transfer_profile_to_env.
3078:
3079: =cut
3080:
3081: ############################################################
3082: ############################################################
3083: my $uniq=0;
3084: sub get_cgi_id {
3085: $uniq=($uniq+1)%100000;
3086: return (time.'_'.$uniq);
3087: }
3088:
3089: ############################################################
3090: ############################################################
3091:
3092: =pod
3093:
3094: =item DrawBarGraph
3095:
3096: Facilitates the plotting of data in a (stacked) bar graph.
3097: Puts plot definition data into the users environment in order for
3098: graph.png to plot it. Returns an <img> tag for the plot.
3099: The bars on the plot are labeled '1','2',...,'n'.
3100:
3101: Inputs:
3102:
3103: =over 4
3104:
3105: =item $Title: string, the title of the plot
3106:
3107: =item $xlabel: string, text describing the X-axis of the plot
3108:
3109: =item $ylabel: string, text describing the Y-axis of the plot
3110:
3111: =item $Max: scalar, the maximum Y value to use in the plot
3112: If $Max is < any data point, the graph will not be rendered.
3113:
3114: =item $colors: array ref holding the colors to be used for the data sets when
3115: they are plotted. If undefined, default values will be used.
3116:
3117: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3118:
3119: =item @Values: An array of array references. Each array reference holds data
3120: to be plotted in a stacked bar chart.
3121:
3122: =back
3123:
3124: Returns:
3125:
3126: An <img> tag which references graph.png and the appropriate identifying
3127: information for the plot.
3128:
3129: =cut
3130:
3131: ############################################################
3132: ############################################################
3133: sub DrawBarGraph {
3134: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3135: #
3136: if (! defined($colors)) {
3137: $colors = ['#33ff00',
3138: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3139: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3140: ];
3141: }
3142: #
3143: my $identifier = &get_cgi_id();
3144: my $id = 'cgi.'.$identifier;
3145: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3146: return '';
3147: }
3148: my $NumBars = scalar(@{$Values[0]});
3149: my %ValuesHash;
3150: my $NumSets=1;
3151: foreach my $array (@Values) {
3152: next if (! ref($array));
3153: $ValuesHash{$id.'.data.'.$NumSets++} =
3154: join(',',@$array);
3155: }
3156: #
3157: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3158: if ($NumBars < 10) {
3159: $width = 120+$NumBars*15;
3160: $xskip = 1;
3161: $bar_width = 15;
3162: } elsif ($NumBars <= 25) {
3163: $width = 120+$NumBars*11;
3164: $xskip = 5;
3165: $bar_width = 8;
3166: } elsif ($NumBars <= 50) {
3167: $width = 120+$NumBars*8;
3168: $xskip = 5;
3169: $bar_width = 4;
3170: } else {
3171: $width = 120+$NumBars*8;
3172: $xskip = 5;
3173: $bar_width = 4;
3174: }
3175: #
3176: my @Labels;
3177: if (defined($labels)) {
3178: @Labels = @$labels;
3179: } else {
3180: for (my $i=0;$i<@{$Values[0]};$i++) {
3181: push (@Labels,$i+1);
3182: }
3183: }
3184: #
3185: $Max = 1 if ($Max < 1);
3186: if ( int($Max) < $Max ) {
3187: $Max++;
3188: $Max = int($Max);
3189: }
3190: $Title = '' if (! defined($Title));
3191: $xlabel = '' if (! defined($xlabel));
3192: $ylabel = '' if (! defined($ylabel));
3193: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3194: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3195: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3196: $ValuesHash{$id.'.y_max_value'} = $Max;
3197: $ValuesHash{$id.'.NumBars'} = $NumBars;
3198: $ValuesHash{$id.'.NumSets'} = $NumSets;
3199: $ValuesHash{$id.'.PlotType'} = 'bar';
3200: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3201: $ValuesHash{$id.'.height'} = $height;
3202: $ValuesHash{$id.'.width'} = $width;
3203: $ValuesHash{$id.'.xskip'} = $xskip;
3204: $ValuesHash{$id.'.bar_width'} = $bar_width;
3205: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3206: #
3207: &Apache::lonnet::appenv(%ValuesHash);
3208: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3209: }
3210:
3211: ############################################################
3212: ############################################################
3213:
3214: =pod
3215:
3216: =item DrawXYGraph
3217:
3218: Facilitates the plotting of data in an XY graph.
3219: Puts plot definition data into the users environment in order for
3220: graph.png to plot it. Returns an <img> tag for the plot.
3221:
3222: Inputs:
3223:
3224: =over 4
3225:
3226: =item $Title: string, the title of the plot
3227:
3228: =item $xlabel: string, text describing the X-axis of the plot
3229:
3230: =item $ylabel: string, text describing the Y-axis of the plot
3231:
3232: =item $Max: scalar, the maximum Y value to use in the plot
3233: If $Max is < any data point, the graph will not be rendered.
3234:
3235: =item $colors: Array ref containing the hex color codes for the data to be
3236: plotted in. If undefined, default values will be used.
3237:
3238: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3239:
3240: =item $Ydata: Array ref containing Array refs.
3241: Each of the contained arrays will be plotted as a separate curve.
3242:
3243: =item %Values: hash indicating or overriding any default values which are
3244: passed to graph.png.
3245: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3246:
3247: =back
3248:
3249: Returns:
3250:
3251: An <img> tag which references graph.png and the appropriate identifying
3252: information for the plot.
3253:
3254: =cut
3255:
3256: ############################################################
3257: ############################################################
3258: sub DrawXYGraph {
3259: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3260: #
3261: # Create the identifier for the graph
3262: my $identifier = &get_cgi_id();
3263: my $id = 'cgi.'.$identifier;
3264: #
3265: $Title = '' if (! defined($Title));
3266: $xlabel = '' if (! defined($xlabel));
3267: $ylabel = '' if (! defined($ylabel));
3268: my %ValuesHash =
3269: (
3270: $id.'.title' => &Apache::lonnet::escape($Title),
3271: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3272: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3273: $id.'.y_max_value'=> $Max,
3274: $id.'.labels' => join(',',@$Xlabels),
3275: $id.'.PlotType' => 'XY',
3276: );
3277: #
3278: if (defined($colors) && ref($colors) eq 'ARRAY') {
3279: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3280: }
3281: #
3282: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3283: return '';
3284: }
3285: my $NumSets=1;
3286: foreach my $array (@{$Ydata}){
3287: next if (! ref($array));
3288: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3289: }
3290: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3291: #
3292: # Deal with other parameters
3293: while (my ($key,$value) = each(%Values)) {
3294: $ValuesHash{$id.'.'.$key} = $value;
3295: }
3296: #
3297: &Apache::lonnet::appenv(%ValuesHash);
3298: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3299: }
3300:
3301: ############################################################
3302: ############################################################
3303:
3304: =pod
3305:
3306: =item DrawXYYGraph
3307:
3308: Facilitates the plotting of data in an XY graph with two Y axes.
3309: Puts plot definition data into the users environment in order for
3310: graph.png to plot it. Returns an <img> tag for the plot.
3311:
3312: Inputs:
3313:
3314: =over 4
3315:
3316: =item $Title: string, the title of the plot
3317:
3318: =item $xlabel: string, text describing the X-axis of the plot
3319:
3320: =item $ylabel: string, text describing the Y-axis of the plot
3321:
3322: =item $colors: Array ref containing the hex color codes for the data to be
3323: plotted in. If undefined, default values will be used.
3324:
3325: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3326:
3327: =item $Ydata1: The first data set
3328:
3329: =item $Min1: The minimum value of the left Y-axis
3330:
3331: =item $Max1: The maximum value of the left Y-axis
3332:
3333: =item $Ydata2: The second data set
3334:
3335: =item $Min2: The minimum value of the right Y-axis
3336:
3337: =item $Max2: The maximum value of the left Y-axis
3338:
3339: =item %Values: hash indicating or overriding any default values which are
3340: passed to graph.png.
3341: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3342:
3343: =back
3344:
3345: Returns:
3346:
3347: An <img> tag which references graph.png and the appropriate identifying
3348: information for the plot.
3349:
3350: =cut
3351:
3352: ############################################################
3353: ############################################################
3354: sub DrawXYYGraph {
3355: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3356: $Ydata2,$Min2,$Max2,%Values)=@_;
3357: #
3358: # Create the identifier for the graph
3359: my $identifier = &get_cgi_id();
3360: my $id = 'cgi.'.$identifier;
3361: #
3362: $Title = '' if (! defined($Title));
3363: $xlabel = '' if (! defined($xlabel));
3364: $ylabel = '' if (! defined($ylabel));
3365: my %ValuesHash =
3366: (
3367: $id.'.title' => &Apache::lonnet::escape($Title),
3368: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3369: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3370: $id.'.labels' => join(',',@$Xlabels),
3371: $id.'.PlotType' => 'XY',
3372: $id.'.NumSets' => 2,
3373: $id.'.two_axes' => 1,
3374: $id.'.y1_max_value' => $Max1,
3375: $id.'.y1_min_value' => $Min1,
3376: $id.'.y2_max_value' => $Max2,
3377: $id.'.y2_min_value' => $Min2,
3378: );
3379: #
3380: if (defined($colors) && ref($colors) eq 'ARRAY') {
3381: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3382: }
3383: #
3384: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3385: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3386: return '';
3387: }
3388: my $NumSets=1;
3389: foreach my $array ($Ydata1,$Ydata2){
3390: next if (! ref($array));
3391: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3392: }
3393: #
3394: # Deal with other parameters
3395: while (my ($key,$value) = each(%Values)) {
3396: $ValuesHash{$id.'.'.$key} = $value;
3397: }
3398: #
3399: &Apache::lonnet::appenv(%ValuesHash);
3400: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3401: }
3402:
3403: ############################################################
3404: ############################################################
3405:
3406: =pod
3407:
3408: =back
3409:
3410: =head1 Statistics helper routines?
3411:
3412: Bad place for them but what the hell.
3413:
3414: =over 4
3415:
3416: =item &chartlink
3417:
3418: Returns a link to the chart for a specific student.
3419:
3420: Inputs:
3421:
3422: =over 4
3423:
3424: =item $linktext: The text of the link
3425:
3426: =item $sname: The students username
3427:
3428: =item $sdomain: The students domain
3429:
3430: =back
3431:
3432: =back
3433:
3434: =cut
3435:
3436: ############################################################
3437: ############################################################
3438: sub chartlink {
3439: my ($linktext, $sname, $sdomain) = @_;
3440: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3441: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3442: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3443: '">'.$linktext.'</a>';
3444: }
3445:
3446: #######################################################
3447: #######################################################
3448:
3449: =pod
3450:
3451: =head1 Course Environment Routines
3452:
3453: =over 4
3454:
3455: =item &restore_course_settings
3456:
3457: =item &store_course_settings
3458:
3459: Restores/Store indicated form parameters from the course environment.
3460: Will not overwrite existing values of the form parameters.
3461:
3462: Inputs:
3463: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3464:
3465: a hash ref describing the data to be stored. For example:
3466:
3467: %Save_Parameters = ('Status' => 'scalar',
3468: 'chartoutputmode' => 'scalar',
3469: 'chartoutputdata' => 'scalar',
3470: 'Section' => 'array',
3471: 'StudentData' => 'array',
3472: 'Maps' => 'array');
3473:
3474: Returns: both routines return nothing
3475:
3476: =cut
3477:
3478: #######################################################
3479: #######################################################
3480: sub store_course_settings {
3481: # save to the environment
3482: # appenv the same items, just to be safe
3483: my $courseid = $ENV{'request.course.id'};
3484: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3485: my ($prefix,$Settings) = @_;
3486: my %SaveHash;
3487: my %AppHash;
3488: while (my ($setting,$type) = each(%$Settings)) {
3489: my $basename = 'internal.'.$prefix.'.'.$setting;
3490: my $envname = 'course.'.$courseid.'.'.$basename;
3491: if (exists($ENV{'form.'.$setting})) {
3492: # Save this value away
3493: if ($type eq 'scalar' &&
3494: (! exists($ENV{$envname}) ||
3495: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3496: $SaveHash{$basename} = $ENV{'form.'.$setting};
3497: $AppHash{$envname} = $ENV{'form.'.$setting};
3498: } elsif ($type eq 'array') {
3499: my $stored_form;
3500: if (ref($ENV{'form.'.$setting})) {
3501: $stored_form = join(',',
3502: map {
3503: &Apache::lonnet::escape($_);
3504: } sort(@{$ENV{'form.'.$setting}}));
3505: } else {
3506: $stored_form =
3507: &Apache::lonnet::escape($ENV{'form.'.$setting});
3508: }
3509: # Determine if the array contents are the same.
3510: if ($stored_form ne $ENV{$envname}) {
3511: $SaveHash{$basename} = $stored_form;
3512: $AppHash{$envname} = $stored_form;
3513: }
3514: }
3515: }
3516: }
3517: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3518: $coursedom,
3519: $ENV{'course.'.$courseid.'.num'});
3520: if ($put_result !~ /^(ok|delayed)/) {
3521: &Apache::lonnet::logthis('unable to save form parameters, '.
3522: 'got error:'.$put_result);
3523: }
3524: # Make sure these settings stick around in this session, too
3525: &Apache::lonnet::appenv(%AppHash);
3526: return;
3527: }
3528:
3529: sub restore_course_settings {
3530: my $courseid = $ENV{'request.course.id'};
3531: my ($prefix,$Settings) = @_;
3532: while (my ($setting,$type) = each(%$Settings)) {
3533: next if (exists($ENV{'form.'.$setting}));
3534: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3535: '.'.$setting;
3536: if (exists($ENV{$envname})) {
3537: if ($type eq 'scalar') {
3538: $ENV{'form.'.$setting} = $ENV{$envname};
3539: } elsif ($type eq 'array') {
3540: $ENV{'form.'.$setting} = [
3541: map {
3542: &Apache::lonnet::unescape($_);
3543: } split(',',$ENV{$envname})
3544: ];
3545: }
3546: }
3547: }
3548: }
3549:
3550: ############################################################
3551: ############################################################
3552:
3553: sub propath {
3554: my ($udom,$uname)=@_;
3555: $udom=~s/\W//g;
3556: $uname=~s/\W//g;
3557: my $subdir=$uname.'__';
3558: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3559: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3560: return $proname;
3561: }
3562:
3563: sub icon {
3564: my ($file)=@_;
3565: my $curfext = (split(/\./,$file))[-1];
3566: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3567: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3568: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3569: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3570: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3571: $curfext.".gif") {
3572: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3573: $curfext.".gif";
3574: }
3575: }
3576: return $iconname;
3577: }
3578:
3579: =pod
3580:
3581: =back
3582:
3583: =cut
3584:
3585: 1;
3586: __END__;
3587:
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