1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.206 2004/08/24 22:47:58 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet();
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::Constants qw(:common :http :methods);
62: use Apache::lonmsg();
63: use Apache::lonmenu();
64: use Apache::lonlocal;
65: use HTML::Entities;
66:
67: my $readit;
68:
69: ##
70: ## Global Variables
71: ##
72:
73: # ----------------------------------------------- Filetypes/Languages/Copyright
74: my %language;
75: my %supported_language;
76: my %cprtag;
77: my %scprtag;
78: my %fe; my %fd;
79: my %category_extensions;
80:
81: # ---------------------------------------------- Designs
82:
83: my %designhash;
84:
85: # ---------------------------------------------- Thesaurus variables
86: #
87: # %Keywords:
88: # A hash used by &keyword to determine if a word is considered a keyword.
89: # $thesaurus_db_file
90: # Scalar containing the full path to the thesaurus database.
91:
92: my %Keywords;
93: my $thesaurus_db_file;
94:
95: #
96: # Initialize values from language.tab, copyright.tab, filetypes.tab,
97: # thesaurus.tab, and filecategories.tab.
98: #
99: BEGIN {
100: # Variable initialization
101: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
102: #
103: unless ($readit) {
104: # ------------------------------------------------------------------- languages
105: {
106: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
107: '/language.tab';
108: if ( open(my $fh,"<$langtabfile") ) {
109: while (<$fh>) {
110: next if /^\#/;
111: chomp;
112: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
113: $language{$key}=$val.' - '.$enc;
114: if ($sup) {
115: $supported_language{$key}=$sup;
116: }
117: }
118: close($fh);
119: }
120: }
121: # ------------------------------------------------------------------ copyrights
122: {
123: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
124: '/copyright.tab';
125: if ( open (my $fh,"<$copyrightfile") ) {
126: while (<$fh>) {
127: next if /^\#/;
128: chomp;
129: my ($key,$val)=(split(/\s+/,$_,2));
130: $cprtag{$key}=$val;
131: }
132: close($fh);
133: }
134: }
135: # ------------------------------------------------------------------ source copyrights
136: {
137: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
138: '/source_copyright.tab';
139: if ( open (my $fh,"<$sourcecopyrightfile") ) {
140: while (<$fh>) {
141: next if /^\#/;
142: chomp;
143: my ($key,$val)=(split(/\s+/,$_,2));
144: $scprtag{$key}=$val;
145: }
146: close($fh);
147: }
148: }
149:
150: # -------------------------------------------------------------- domain designs
151:
152: my $filename;
153: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
154: opendir(DIR,$designdir);
155: while ($filename=readdir(DIR)) {
156: my ($domain)=($filename=~/^(\w+)\./);
157: {
158: my $designfile = $designdir.'/'.$filename;
159: if ( open (my $fh,"<$designfile") ) {
160: while (<$fh>) {
161: next if /^\#/;
162: chomp;
163: my ($key,$val)=(split(/\=/,$_));
164: if ($val) { $designhash{$domain.'.'.$key}=$val; }
165: }
166: close($fh);
167: }
168: }
169:
170: }
171: closedir(DIR);
172:
173:
174: # ------------------------------------------------------------- file categories
175: {
176: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
177: '/filecategories.tab';
178: if ( open (my $fh,"<$categoryfile") ) {
179: while (<$fh>) {
180: next if /^\#/;
181: chomp;
182: my ($extension,$category)=(split(/\s+/,$_,2));
183: push @{$category_extensions{lc($category)}},$extension;
184: }
185: close($fh);
186: }
187:
188: }
189: # ------------------------------------------------------------------ file types
190: {
191: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
192: '/filetypes.tab';
193: if ( open (my $fh,"<$typesfile") ) {
194: while (<$fh>) {
195: next if (/^\#/);
196: chomp;
197: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
198: if ($descr ne '') {
199: $fe{$ending}=lc($emb);
200: $fd{$ending}=$descr;
201: }
202: }
203: close($fh);
204: }
205: }
206: &Apache::lonnet::logthis(
207: "<font color=yellow>INFO: Read file types</font>");
208: $readit=1;
209: } # end of unless($readit)
210:
211: }
212:
213: ###############################################################
214: ## HTML and Javascript Helper Functions ##
215: ###############################################################
216:
217: =pod
218:
219: =head1 HTML and Javascript Functions
220:
221: =over 4
222:
223: =item * browser_and_searcher_javascript ()
224:
225: X<browsing, javascript>X<searching, javascript>Returns a string
226: containing javascript with two functions, C<openbrowser> and
227: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
228: tags.
229:
230: =item * openbrowser(formname,elementname,only,omit) [javascript]
231:
232: inputs: formname, elementname, only, omit
233:
234: formname and elementname indicate the name of the html form and name of
235: the element that the results of the browsing selection are to be placed in.
236:
237: Specifying 'only' will restrict the browser to displaying only files
238: with the given extension. Can be a comma separated list.
239:
240: Specifying 'omit' will restrict the browser to NOT displaying files
241: with the given extension. Can be a comma separated list.
242:
243: =item * opensearcher(formname, elementname) [javascript]
244:
245: Inputs: formname, elementname
246:
247: formname and elementname specify the name of the html form and the name
248: of the element the selection from the search results will be placed in.
249:
250: =cut
251:
252: sub browser_and_searcher_javascript {
253: my ($mode)=@_;
254: if (!defined($mode)) { $mode='edit'; }
255: my $resurl=&lastresurl();
256: return <<END;
257: var editbrowser = null;
258: function openbrowser(formname,elementname,only,omit,titleelement) {
259: var url = '$resurl/?';
260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
264: url += 'mode=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: }
269: if (omit != null) {
270: url += 'omit=' + omit + '&';
271: }
272: if (titleelement != null) {
273: url += 'titleelement=' + titleelement + '&';
274: }
275: url += 'element=' + elementname + '';
276: var title = 'Browser';
277: var options = 'scrollbars=1,resizable=1,menubar=0';
278: options += ',width=700,height=600';
279: editbrowser = open(url,title,options,'1');
280: editbrowser.focus();
281: }
282: var editsearcher;
283: function opensearcher(formname,elementname,titleelement) {
284: var url = '/adm/searchcat?';
285: if (editsearcher == null) {
286: url += 'launch=1&';
287: }
288: url += 'catalogmode=interactive&';
289: url += 'mode=$mode&';
290: url += 'form=' + formname + '&';
291: if (titleelement != null) {
292: url += 'titleelement=' + titleelement + '&';
293: }
294: url += 'element=' + elementname + '';
295: var title = 'Search';
296: var options = 'scrollbars=1,resizable=1,menubar=0';
297: options += ',width=700,height=600';
298: editsearcher = open(url,title,options,'1');
299: editsearcher.focus();
300: }
301: END
302: }
303:
304: sub lastresurl {
305: if ($ENV{'environment.lastresurl'}) {
306: return $ENV{'environment.lastresurl'}
307: } else {
308: return '/res';
309: }
310: }
311:
312: sub storeresurl {
313: my $resurl=&Apache::lonnet::clutter(shift);
314: unless ($resurl=~/^\/res/) { return 0; }
315: $resurl=~s/\/$//;
316: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
317: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
318: return 1;
319: }
320:
321: sub studentbrowser_javascript {
322: unless (
323: (($ENV{'request.course.id'}) &&
324: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
325: || ($ENV{'request.role'}=~/^(au|dc|su)/)
326: ) { return ''; }
327: return (<<'ENDSTDBRW');
328: <script type="text/javascript" language="Javascript" >
329: var stdeditbrowser;
330: function openstdbrowser(formname,uname,udom,roleflag) {
331: var url = '/adm/pickstudent?';
332: var filter;
333: eval('filter=document.'+formname+'.'+uname+'.value;');
334: if (filter != null) {
335: if (filter != '') {
336: url += 'filter='+filter+'&';
337: }
338: }
339: url += 'form=' + formname + '&unameelement='+uname+
340: '&udomelement='+udom;
341: if (roleflag) { url+="&roles=1"; }
342: var title = 'Student_Browser';
343: var options = 'scrollbars=1,resizable=1,menubar=0';
344: options += ',width=700,height=600';
345: stdeditbrowser = open(url,title,options,'1');
346: stdeditbrowser.focus();
347: }
348: </script>
349: ENDSTDBRW
350: }
351:
352: sub selectstudent_link {
353: my ($form,$unameele,$udomele)=@_;
354: if ($ENV{'request.course.id'}) {
355: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
356: return '';
357: }
358: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
359: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
360: }
361: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
362: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
363: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
364: }
365: return '';
366: }
367:
368: sub coursebrowser_javascript {
369: my ($domainfilter)=@_;
370: return (<<ENDSTDBRW);
371: <script type="text/javascript" language="Javascript" >
372: var stdeditbrowser;
373: function opencrsbrowser(formname,uname,udom,desc) {
374: var url = '/adm/pickcourse?';
375: var filter;
376: if (filter != null) {
377: if (filter != '') {
378: url += 'filter='+filter+'&';
379: }
380: }
381: var domainfilter='$domainfilter';
382: if (domainfilter != null) {
383: if (domainfilter != '') {
384: url += 'domainfilter='+domainfilter+'&';
385: }
386: }
387: url += 'form=' + formname + '&cnumelement='+uname+
388: '&cdomelement='+udom+
389: '&cnameelement='+desc;
390: var title = 'Course_Browser';
391: var options = 'scrollbars=1,resizable=1,menubar=0';
392: options += ',width=700,height=600';
393: stdeditbrowser = open(url,title,options,'1');
394: stdeditbrowser.focus();
395: }
396: </script>
397: ENDSTDBRW
398: }
399:
400: sub selectcourse_link {
401: my ($form,$unameele,$udomele,$desc)=@_;
402: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
403: '","'.$udomele.'","'.$desc.'");'."'>".&mt('Select Course')."</a>";
404: }
405:
406: =pod
407:
408: =item * linked_select_forms(...)
409:
410: linked_select_forms returns a string containing a <script></script> block
411: and html for two <select> menus. The select menus will be linked in that
412: changing the value of the first menu will result in new values being placed
413: in the second menu. The values in the select menu will appear in alphabetical
414: order.
415:
416: linked_select_forms takes the following ordered inputs:
417:
418: =over 4
419:
420: =item * $formname, the name of the <form> tag
421:
422: =item * $middletext, the text which appears between the <select> tags
423:
424: =item * $firstdefault, the default value for the first menu
425:
426: =item * $firstselectname, the name of the first <select> tag
427:
428: =item * $secondselectname, the name of the second <select> tag
429:
430: =item * $hashref, a reference to a hash containing the data for the menus.
431:
432: =back
433:
434: Below is an example of such a hash. Only the 'text', 'default', and
435: 'select2' keys must appear as stated. keys(%menu) are the possible
436: values for the first select menu. The text that coincides with the
437: first menu value is given in $menu{$choice1}->{'text'}. The values
438: and text for the second menu are given in the hash pointed to by
439: $menu{$choice1}->{'select2'}.
440:
441: my %menu = ( A1 => { text =>"Choice A1" ,
442: default => "B3",
443: select2 => {
444: B1 => "Choice B1",
445: B2 => "Choice B2",
446: B3 => "Choice B3",
447: B4 => "Choice B4"
448: }
449: },
450: A2 => { text =>"Choice A2" ,
451: default => "C2",
452: select2 => {
453: C1 => "Choice C1",
454: C2 => "Choice C2",
455: C3 => "Choice C3"
456: }
457: },
458: A3 => { text =>"Choice A3" ,
459: default => "D6",
460: select2 => {
461: D1 => "Choice D1",
462: D2 => "Choice D2",
463: D3 => "Choice D3",
464: D4 => "Choice D4",
465: D5 => "Choice D5",
466: D6 => "Choice D6",
467: D7 => "Choice D7"
468: }
469: }
470: );
471:
472: =cut
473:
474: sub linked_select_forms {
475: my ($formname,
476: $middletext,
477: $firstdefault,
478: $firstselectname,
479: $secondselectname,
480: $hashref
481: ) = @_;
482: my $second = "document.$formname.$secondselectname";
483: my $first = "document.$formname.$firstselectname";
484: # output the javascript to do the changing
485: my $result = '';
486: $result.="<script>\n";
487: $result.="var select2data = new Object();\n";
488: $" = '","';
489: my $debug = '';
490: foreach my $s1 (sort(keys(%$hashref))) {
491: $result.="select2data.d_$s1 = new Object();\n";
492: $result.="select2data.d_$s1.def = new String('".
493: $hashref->{$s1}->{'default'}."');\n";
494: $result.="select2data.d_$s1.values = new Array(";
495: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
496: $result.="\"@s2values\");\n";
497: $result.="select2data.d_$s1.texts = new Array(";
498: my @s2texts;
499: foreach my $value (@s2values) {
500: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
501: }
502: $result.="\"@s2texts\");\n";
503: }
504: $"=' ';
505: $result.= <<"END";
506:
507: function select1_changed() {
508: // Determine new choice
509: var newvalue = "d_" + $first.value;
510: // update select2
511: var values = select2data[newvalue].values;
512: var texts = select2data[newvalue].texts;
513: var select2def = select2data[newvalue].def;
514: var i;
515: // out with the old
516: for (i = 0; i < $second.options.length; i++) {
517: $second.options[i] = null;
518: }
519: // in with the nuclear
520: for (i=0;i<values.length; i++) {
521: $second.options[i] = new Option(values[i]);
522: $second.options[i].value = values[i];
523: $second.options[i].text = texts[i];
524: if (values[i] == select2def) {
525: $second.options[i].selected = true;
526: }
527: }
528: }
529: </script>
530: END
531: # output the initial values for the selection lists
532: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
533: foreach my $value (sort(keys(%$hashref))) {
534: $result.=" <option value=\"$value\" ";
535: $result.=" selected=\"true\" " if ($value eq $firstdefault);
536: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
537: }
538: $result .= "</select>\n";
539: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
540: $result .= $middletext;
541: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
542: my $seconddefault = $hashref->{$firstdefault}->{'default'};
543: foreach my $value (sort(keys(%select2))) {
544: $result.=" <option value=\"$value\" ";
545: $result.=" selected=\"true\" " if ($value eq $seconddefault);
546: $result.=">".&mt($select2{$value})."</option>\n";
547: }
548: $result .= "</select>\n";
549: # return $debug;
550: return $result;
551: } # end of sub linked_select_forms {
552:
553: =pod
554:
555: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
556:
557: Returns a string corresponding to an HTML link to the given help
558: $topic, where $topic corresponds to the name of a .tex file in
559: /home/httpd/html/adm/help/tex, with underscores replaced by
560: spaces.
561:
562: $text will optionally be linked to the same topic, allowing you to
563: link text in addition to the graphic. If you do not want to link
564: text, but wish to specify one of the later parameters, pass an
565: empty string.
566:
567: $stayOnPage is a value that will be interpreted as a boolean. If true,
568: the link will not open a new window. If false, the link will open
569: a new window using Javascript. (Default is false.)
570:
571: $width and $height are optional numerical parameters that will
572: override the width and height of the popped up window, which may
573: be useful for certain help topics with big pictures included.
574:
575: =cut
576:
577: sub help_open_topic {
578: my ($topic, $text, $stayOnPage, $width, $height) = @_;
579: $text = "" if (not defined $text);
580: $stayOnPage = 0 if (not defined $stayOnPage);
581: if ($ENV{'browser.interface'} eq 'textual' ||
582: $ENV{'environment.remote'} eq 'off' ) {
583: $stayOnPage=1;
584: }
585: $width = 350 if (not defined $width);
586: $height = 400 if (not defined $height);
587: my $filename = $topic;
588: $filename =~ s/ /_/g;
589:
590: my $template = "";
591: my $link;
592:
593: $topic=~s/\W/\_/g;
594:
595: if (!$stayOnPage)
596: {
597: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
598: }
599: else
600: {
601: $link = "/adm/help/${filename}.hlp";
602: }
603:
604: # Add the text
605: if ($text ne "")
606: {
607: $template .=
608: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
609: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
610: }
611:
612: # Add the graphic
613: my $title = &mt('Online Help');
614: $template .= <<"ENDTEMPLATE";
615: <a href="$link" title="$title"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
616: ENDTEMPLATE
617: if ($text ne '') { $template.='</td></tr></table>' };
618: return $template;
619:
620: }
621:
622: # This is a quicky function for Latex cheatsheet editing, since it
623: # appears in at least four places
624: sub helpLatexCheatsheet {
625: my $other = shift;
626: my $addOther = '';
627: if ($other) {
628: $addOther = Apache::loncommon::help_open_topic($other, shift,
629: undef, undef, 600) .
630: '</td><td>';
631: }
632: return '<table><tr><td>'.
633: $addOther .
634: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
635: undef,undef,600)
636: .'</td><td>'.
637: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
638: undef,undef,600)
639: .'</td></tr></table>';
640: }
641:
642: sub help_open_menu {
643: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
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 = 620 if (not defined $width);
651: $height = 600 if (not defined $height);
652: my $link='';
653: my $title = &mt('Get help');
654: my $origurl = $ENV{'REQUEST_URI'};
655: my $timestamp = time;
656: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
657: $$_ = &Apache::lonnet::escape($$_);
658: }
659:
660: if (!$stayOnPage) {
661: $link = "javascript:helpMenu('open')";
662: } else {
663: $link = "javascript:helpMenu('display')";
664: }
665: my $banner_link = "/adm/helpmenu?page=banner&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp&stayonpage=$stayOnPage";
666: my $details_link = "/adm/helpmenu?page=body&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
667: my $template;
668: if ($text ne "") {
669: $template .=
670: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
671: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
672: }
673: $template .= <<"ENDTEMPLATE";
674: <script>
675: function helpMenu(caller) {
676: if (caller == 'open') {
677: newWindow = window.open("","helpmenu","HEIGHT=$height,WIDTH=$width,resize=yes,scrollbars=yes" )
678: caller = newWindow.document
679: } else {
680: caller = this.document
681: }
682: caller.write("<html><head><title>LON-CAPA Help Menu</title><meta http-equiv='pragma' content='no-cache'></head>")
683: caller.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
684: caller.write("</html>")
685: caller.close()
686: if (caller == newWindow.document) {
687: caller.focus()
688: }
689: }
690: </script>
691: <a href="$link" title="$title"><image src="/adm/lonIcons/helpgateway.gif" border="0" alt="(Help Menu)" /></a>
692: ENDTEMPLATE
693: if ($component_help) {
694: if (!$text) {
695: $template=&help_open_topic($component_help,undef,$stayOnPage,
696: $width,$height).' '.$template;
697: } else {
698: my $help_text;
699: $help_text=&Apache::lonnet::unescape($topic);
700: $template='<table><tr><td>'.
701: &help_open_topic($component_help,$help_text,$stayOnPage,
702: $width,$height).'</td><td>'.$template.
703: '</td></tr></table>';
704: }
705: }
706: if ($text ne '') { $template.='</td></tr></table>' };
707: return $template;
708: }
709:
710: sub help_open_bug {
711: my ($topic, $text, $stayOnPage, $width, $height) = @_;
712: unless ($ENV{'user.adv'}) { return ''; }
713: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
714: $text = "" if (not defined $text);
715: $stayOnPage = 0 if (not defined $stayOnPage);
716: if ($ENV{'browser.interface'} eq 'textual' ||
717: $ENV{'environment.remote'} eq 'off' ) {
718: $stayOnPage=1;
719: }
720: $width = 600 if (not defined $width);
721: $height = 600 if (not defined $height);
722:
723: $topic=~s/\W+/\+/g;
724: my $link='';
725: my $template='';
726: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
727: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
728: if (!$stayOnPage)
729: {
730: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
731: }
732: else
733: {
734: $link = $url;
735: }
736: # Add the text
737: if ($text ne "")
738: {
739: $template .=
740: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
741: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
742: }
743:
744: # Add the graphic
745: my $title = &mt('Report a Bug');
746: $template .= <<"ENDTEMPLATE";
747: <a href="$link" title="$title"><image src="/adm/lonMisc/smallBug.gif" border="0" alt="(Bug: $topic)" /></a>
748: ENDTEMPLATE
749: if ($text ne '') { $template.='</td></tr></table>' };
750: return $template;
751:
752: }
753:
754: sub help_open_faq {
755: my ($topic, $text, $stayOnPage, $width, $height) = @_;
756: unless ($ENV{'user.adv'}) { return ''; }
757: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
758: $text = "" if (not defined $text);
759: $stayOnPage = 0 if (not defined $stayOnPage);
760: if ($ENV{'browser.interface'} eq 'textual' ||
761: $ENV{'environment.remote'} eq 'off' ) {
762: $stayOnPage=1;
763: }
764: $width = 350 if (not defined $width);
765: $height = 400 if (not defined $height);
766:
767: $topic=~s/\W+/\+/g;
768: my $link='';
769: my $template='';
770: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
771: if (!$stayOnPage)
772: {
773: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
774: }
775: else
776: {
777: $link = $url;
778: }
779:
780: # Add the text
781: if ($text ne "")
782: {
783: $template .=
784: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
785: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
786: }
787:
788: # Add the graphic
789: my $title = &mt('View the FAQ');
790: $template .= <<"ENDTEMPLATE";
791: <a href="$link" title="$title"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(FAQ: $topic)" /></a>
792: ENDTEMPLATE
793: if ($text ne '') { $template.='</td></tr></table>' };
794: return $template;
795:
796: }
797:
798: ###############################################################
799: ###############################################################
800:
801: =pod
802:
803: =item * csv_translate($text)
804:
805: Translate $text to allow it to be output as a 'comma separated values'
806: format.
807:
808: =cut
809:
810: ###############################################################
811: ###############################################################
812: sub csv_translate {
813: my $text = shift;
814: $text =~ s/\"/\"\"/g;
815: $text =~ s/\n//g;
816: return $text;
817: }
818:
819:
820: ###############################################################
821: ###############################################################
822:
823: =pod
824:
825: =item * define_excel_formats
826:
827: Define some commonly used Excel cell formats.
828:
829: Currently supported formats:
830:
831: =over 4
832:
833: =item header
834:
835: =item bold
836:
837: =item h1
838:
839: =item h2
840:
841: =item h3
842:
843: =item date
844:
845: =back
846:
847: Inputs: $workbook
848:
849: Returns: $format, a hash reference.
850:
851: =cut
852:
853: ###############################################################
854: ###############################################################
855: sub define_excel_formats {
856: my ($workbook) = @_;
857: my $format;
858: $format->{'header'} = $workbook->add_format(bold => 1,
859: bottom => 1,
860: align => 'center');
861: $format->{'bold'} = $workbook->add_format(bold=>1);
862: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
863: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
864: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
865: $format->{'date'} = $workbook->add_format(num_format=>
866: 'mmm d yyyy hh:mm AM/PM');
867: return $format;
868: }
869:
870: ###############################################################
871: ###############################################################
872:
873: =pod
874:
875: =item * change_content_javascript():
876:
877: This and the next function allow you to create small sections of an
878: otherwise static HTML page that you can update on the fly with
879: Javascript, even in Netscape 4.
880:
881: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
882: must be written to the HTML page once. It will prove the Javascript
883: function "change(name, content)". Calling the change function with the
884: name of the section
885: you want to update, matching the name passed to C<changable_area>, and
886: the new content you want to put in there, will put the content into
887: that area.
888:
889: B<Note>: Netscape 4 only reserves enough space for the changable area
890: to contain room for the original contents. You need to "make space"
891: for whatever changes you wish to make, and be B<sure> to check your
892: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
893: it's adequate for updating a one-line status display, but little more.
894: This script will set the space to 100% width, so you only need to
895: worry about height in Netscape 4.
896:
897: Modern browsers are much less limiting, and if you can commit to the
898: user not using Netscape 4, this feature may be used freely with
899: pretty much any HTML.
900:
901: =cut
902:
903: sub change_content_javascript {
904: # If we're on Netscape 4, we need to use Layer-based code
905: if ($ENV{'browser.type'} eq 'netscape' &&
906: $ENV{'browser.version'} =~ /^4\./) {
907: return (<<NETSCAPE4);
908: function change(name, content) {
909: doc = document.layers[name+"___escape"].layers[0].document;
910: doc.open();
911: doc.write(content);
912: doc.close();
913: }
914: NETSCAPE4
915: } else {
916: # Otherwise, we need to use semi-standards-compliant code
917: # (technically, "innerHTML" isn't standard but the equivalent
918: # is really scary, and every useful browser supports it
919: return (<<DOMBASED);
920: function change(name, content) {
921: element = document.getElementById(name);
922: element.innerHTML = content;
923: }
924: DOMBASED
925: }
926: }
927:
928: =pod
929:
930: =item * changable_area($name, $origContent):
931:
932: This provides a "changable area" that can be modified on the fly via
933: the Javascript code provided in C<change_content_javascript>. $name is
934: the name you will use to reference the area later; do not repeat the
935: same name on a given HTML page more then once. $origContent is what
936: the area will originally contain, which can be left blank.
937:
938: =cut
939:
940: sub changable_area {
941: my ($name, $origContent) = @_;
942:
943: if ($ENV{'browser.type'} eq 'netscape' &&
944: $ENV{'browser.version'} =~ /^4\./) {
945: # If this is netscape 4, we need to use the Layer tag
946: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
947: } else {
948: return "<span id='$name'>$origContent</span>";
949: }
950: }
951:
952: =pod
953:
954: =back
955:
956: =cut
957:
958: ###############################################################
959: ## Home server <option> list generating code ##
960: ###############################################################
961:
962: =pod
963:
964: =head1 Home Server option list generating code
965:
966: =over 4
967:
968: =item * get_domains()
969:
970: Returns an array containing each of the domains listed in the hosts.tab
971: file.
972:
973: =cut
974:
975: #-------------------------------------------
976: sub get_domains {
977: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
978: my @domains;
979: my %seen;
980: foreach (sort values(%Apache::lonnet::hostdom)) {
981: push (@domains,$_) unless $seen{$_}++;
982: }
983: return @domains;
984: }
985:
986: # ------------------------------------------
987:
988: sub domain_select {
989: my ($name,$value,$multiple)=@_;
990: my %domains=map {
991: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
992: } &get_domains;
993: if ($multiple) {
994: $domains{''}=&mt('Any domain');
995: return &multiple_select_form($name,$value,4,%domains);
996: } else {
997: return &select_form($name,$value,%domains);
998: }
999: }
1000:
1001: sub multiple_select_form {
1002: my ($name,$value,$size,%hash)=@_;
1003: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1004: my $output='';
1005: if (! defined($size)) {
1006: $size = 4;
1007: if (scalar(keys(%hash))<4) {
1008: $size = scalar(keys(%hash));
1009: }
1010: }
1011: $output.="\n<select name='$name' size='$size' multiple='1'>";
1012: foreach (sort(keys(%hash))) {
1013: $output.='<option value="'.$_.'" ';
1014: $output.='selected ' if ($selected{$_});
1015: $output.='>'.$hash{$_}."</option>\n";
1016: }
1017: $output.="</select>\n";
1018: return $output;
1019: }
1020:
1021: #-------------------------------------------
1022:
1023: =pod
1024:
1025: =item * select_form($defdom,$name,%hash)
1026:
1027: Returns a string containing a <select name='$name' size='1'> form to
1028: allow a user to select options from a hash option_name => displayed text.
1029: See lonrights.pm for an example invocation and use.
1030:
1031: =cut
1032:
1033: #-------------------------------------------
1034: sub select_form {
1035: my ($def,$name,%hash) = @_;
1036: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1037: my @keys;
1038: if (exists($hash{'select_form_order'})) {
1039: @keys=@{$hash{'select_form_order'}};
1040: } else {
1041: @keys=sort(keys(%hash));
1042: }
1043: foreach (@keys) {
1044: $selectform.="<option value=\"$_\" ".
1045: ($_ eq $def ? 'selected' : '').
1046: ">".&mt($hash{$_})."</option>\n";
1047: }
1048: $selectform.="</select>";
1049: return $selectform;
1050: }
1051:
1052: sub gradeleveldescription {
1053: my $gradelevel=shift;
1054: my %gradelevels=(0 => 'Not specified',
1055: 1 => 'Grade 1',
1056: 2 => 'Grade 2',
1057: 3 => 'Grade 3',
1058: 4 => 'Grade 4',
1059: 5 => 'Grade 5',
1060: 6 => 'Grade 6',
1061: 7 => 'Grade 7',
1062: 8 => 'Grade 8',
1063: 9 => 'Grade 9',
1064: 10 => 'Grade 10',
1065: 11 => 'Grade 11',
1066: 12 => 'Grade 12',
1067: 13 => 'Grade 13',
1068: 14 => '100 Level',
1069: 15 => '200 Level',
1070: 16 => '300 Level',
1071: 17 => '400 Level',
1072: 18 => 'Graduate Level');
1073: return &mt($gradelevels{$gradelevel});
1074: }
1075:
1076: sub select_level_form {
1077: my ($deflevel,$name)=@_;
1078: unless ($deflevel) { $deflevel=0; }
1079: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1080: for (my $i=0; $i<=18; $i++) {
1081: $selectform.="<option value=\"$i\" ".
1082: ($i==$deflevel ? 'selected' : '').
1083: ">".&gradeleveldescription($i)."</option>\n";
1084: }
1085: $selectform.="</select>";
1086: return $selectform;
1087: }
1088:
1089: #-------------------------------------------
1090:
1091: =pod
1092:
1093: =item * select_dom_form($defdom,$name,$includeempty)
1094:
1095: Returns a string containing a <select name='$name' size='1'> form to
1096: allow a user to select the domain to preform an operation in.
1097: See loncreateuser.pm for an example invocation and use.
1098:
1099: If the $includeempty flag is set, it also includes an empty choice ("no domain
1100: selected");
1101:
1102: =cut
1103:
1104: #-------------------------------------------
1105: sub select_dom_form {
1106: my ($defdom,$name,$includeempty) = @_;
1107: my @domains = get_domains();
1108: if ($includeempty) { @domains=('',@domains); }
1109: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1110: foreach (@domains) {
1111: $selectdomain.="<option value=\"$_\" ".
1112: ($_ eq $defdom ? 'selected' : '').
1113: ">$_</option>\n";
1114: }
1115: $selectdomain.="</select>";
1116: return $selectdomain;
1117: }
1118:
1119: #-------------------------------------------
1120:
1121: =pod
1122:
1123: =item * get_library_servers($domain)
1124:
1125: Returns a hash which contains keys like '103l3' and values like
1126: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1127: given $domain.
1128:
1129: =cut
1130:
1131: #-------------------------------------------
1132: sub get_library_servers {
1133: my $domain = shift;
1134: my %library_servers;
1135: foreach (keys(%Apache::lonnet::libserv)) {
1136: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1137: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1138: }
1139: }
1140: return %library_servers;
1141: }
1142:
1143: #-------------------------------------------
1144:
1145: =pod
1146:
1147: =item * home_server_option_list($domain)
1148:
1149: returns a string which contains an <option> list to be used in a
1150: <select> form input. See loncreateuser.pm for an example.
1151:
1152: =cut
1153:
1154: #-------------------------------------------
1155: sub home_server_option_list {
1156: my $domain = shift;
1157: my %servers = &get_library_servers($domain);
1158: my $result = '';
1159: foreach (sort keys(%servers)) {
1160: $result.=
1161: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1162: }
1163: return $result;
1164: }
1165:
1166: =pod
1167:
1168: =back
1169:
1170: =cut
1171:
1172: ###############################################################
1173: ## Decoding User Agent ##
1174: ###############################################################
1175:
1176: =pod
1177:
1178: =head1 Decoding the User Agent
1179:
1180: =over 4
1181:
1182: =item * &decode_user_agent()
1183:
1184: Inputs: $r
1185:
1186: Outputs:
1187:
1188: =over 4
1189:
1190: =item * $httpbrowser
1191:
1192: =item * $clientbrowser
1193:
1194: =item * $clientversion
1195:
1196: =item * $clientmathml
1197:
1198: =item * $clientunicode
1199:
1200: =item * $clientos
1201:
1202: =back
1203:
1204: =back
1205:
1206: =cut
1207:
1208: ###############################################################
1209: ###############################################################
1210: sub decode_user_agent {
1211: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1212: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1213: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1214: my $clientbrowser='unknown';
1215: my $clientversion='0';
1216: my $clientmathml='';
1217: my $clientunicode='0';
1218: for (my $i=0;$i<=$#browsertype;$i++) {
1219: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1220: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1221: $clientbrowser=$bname;
1222: $httpbrowser=~/$vreg/i;
1223: $clientversion=$1;
1224: $clientmathml=($clientversion>=$minv);
1225: $clientunicode=($clientversion>=$univ);
1226: }
1227: }
1228: my $clientos='unknown';
1229: if (($httpbrowser=~/linux/i) ||
1230: ($httpbrowser=~/unix/i) ||
1231: ($httpbrowser=~/ux/i) ||
1232: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1233: if (($httpbrowser=~/vax/i) ||
1234: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1235: if ($httpbrowser=~/next/i) { $clientos='next'; }
1236: if (($httpbrowser=~/mac/i) ||
1237: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1238: if ($httpbrowser=~/win/i) { $clientos='win'; }
1239: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1240: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1241: $clientunicode,$clientos,);
1242: }
1243:
1244: ###############################################################
1245: ## Authentication changing form generation subroutines ##
1246: ###############################################################
1247: ##
1248: ## All of the authform_xxxxxxx subroutines take their inputs in a
1249: ## hash, and have reasonable default values.
1250: ##
1251: ## formname = the name given in the <form> tag.
1252: #-------------------------------------------
1253:
1254: =pod
1255:
1256: =head1 Authentication Routines
1257:
1258: =over 4
1259:
1260: =item * authform_xxxxxx
1261:
1262: The authform_xxxxxx subroutines provide javascript and html forms which
1263: handle some of the conveniences required for authentication forms.
1264: This is not an optimal method, but it works.
1265:
1266: See loncreateuser.pm for invocation and use examples.
1267:
1268: =over 4
1269:
1270: =item * authform_header
1271:
1272: =item * authform_authorwarning
1273:
1274: =item * authform_nochange
1275:
1276: =item * authform_kerberos
1277:
1278: =item * authform_internal
1279:
1280: =item * authform_filesystem
1281:
1282: =back
1283:
1284: =back
1285:
1286: =cut
1287:
1288: #-------------------------------------------
1289: sub authform_header{
1290: my %in = (
1291: formname => 'cu',
1292: kerb_def_dom => '',
1293: @_,
1294: );
1295: $in{'formname'} = 'document.' . $in{'formname'};
1296: my $result='';
1297:
1298: #---------------------------------------------- Code for upper case translation
1299: my $Javascript_toUpperCase;
1300: unless ($in{kerb_def_dom}) {
1301: $Javascript_toUpperCase =<<"END";
1302: switch (choice) {
1303: case 'krb': currentform.elements[choicearg].value =
1304: currentform.elements[choicearg].value.toUpperCase();
1305: break;
1306: default:
1307: }
1308: END
1309: } else {
1310: $Javascript_toUpperCase = "";
1311: }
1312:
1313: my $radioval = "'nochange'";
1314: if (exists($in{'curr_authtype'}) &&
1315: defined($in{'curr_authtype'}) &&
1316: $in{'curr_authtype'} ne '') {
1317: $radioval = "'$in{'curr_authtype'}arg'";
1318: }
1319: my $argfield = 'null';
1320: if ( grep/^mode$/,(keys %in) ) {
1321: if ($in{'mode'} eq 'modifycourse') {
1322: if ( grep/^curr_authtype$/,(keys %in) ) {
1323: $radioval = "'$in{'curr_authtype'}'";
1324: }
1325: if ( grep/^curr_autharg$/,(keys %in) ) {
1326: unless ($in{'curr_autharg'} eq '') {
1327: $argfield = "'$in{'curr_autharg'}'";
1328: }
1329: }
1330: }
1331: }
1332:
1333: $result.=<<"END";
1334: var current = new Object();
1335: current.radiovalue = $radioval;
1336: current.argfield = $argfield;
1337:
1338: function changed_radio(choice,currentform) {
1339: var choicearg = choice + 'arg';
1340: // If a radio button in changed, we need to change the argfield
1341: if (current.radiovalue != choice) {
1342: current.radiovalue = choice;
1343: if (current.argfield != null) {
1344: currentform.elements[current.argfield].value = '';
1345: }
1346: if (choice == 'nochange') {
1347: current.argfield = null;
1348: } else {
1349: current.argfield = choicearg;
1350: switch(choice) {
1351: case 'krb':
1352: currentform.elements[current.argfield].value =
1353: "$in{'kerb_def_dom'}";
1354: break;
1355: default:
1356: break;
1357: }
1358: }
1359: }
1360: return;
1361: }
1362:
1363: function changed_text(choice,currentform) {
1364: var choicearg = choice + 'arg';
1365: if (currentform.elements[choicearg].value !='') {
1366: $Javascript_toUpperCase
1367: // clear old field
1368: if ((current.argfield != choicearg) && (current.argfield != null)) {
1369: currentform.elements[current.argfield].value = '';
1370: }
1371: current.argfield = choicearg;
1372: }
1373: set_auth_radio_buttons(choice,currentform);
1374: return;
1375: }
1376:
1377: function set_auth_radio_buttons(newvalue,currentform) {
1378: var i=0;
1379: while (i < currentform.login.length) {
1380: if (currentform.login[i].value == newvalue) { break; }
1381: i++;
1382: }
1383: if (i == currentform.login.length) {
1384: return;
1385: }
1386: current.radiovalue = newvalue;
1387: currentform.login[i].checked = true;
1388: return;
1389: }
1390: END
1391: return $result;
1392: }
1393:
1394: sub authform_authorwarning{
1395: my $result='';
1396: $result='<i>'.
1397: &mt('As a general rule, only authors or co-authors should be '.
1398: 'filesystem authenticated '.
1399: '(which allows access to the server filesystem).')."</i>\n";
1400: return $result;
1401: }
1402:
1403: sub authform_nochange{
1404: my %in = (
1405: formname => 'document.cu',
1406: kerb_def_dom => 'MSU.EDU',
1407: @_,
1408: );
1409: my $result = &mt('[_1] Do not change login data',
1410: '<input type="radio" name="login" value="nochange" '.
1411: 'checked="checked" onclick="'.
1412: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1413: return $result;
1414: }
1415:
1416: sub authform_kerberos{
1417: my %in = (
1418: formname => 'document.cu',
1419: kerb_def_dom => 'MSU.EDU',
1420: kerb_def_auth => 'krb4',
1421: @_,
1422: );
1423: my ($check4,$check5,$krbarg);
1424: if ($in{'kerb_def_auth'} eq 'krb5') {
1425: $check5 = " checked=\"on\"";
1426: } else {
1427: $check4 = " checked=\"on\"";
1428: }
1429: $krbarg = $in{'kerb_def_dom'};
1430:
1431: my $krbcheck = "";
1432: if ( grep/^curr_authtype$/,(keys %in) ) {
1433: if ($in{'curr_authtype'} =~ m/^krb/) {
1434: $krbcheck = " checked=\"on\"";
1435: if ( grep/^curr_autharg$/,(keys %in) ) {
1436: $krbarg = $in{'curr_autharg'};
1437: }
1438: }
1439: }
1440:
1441: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1442: my $result .= &mt
1443: ('[_1] Kerberos authenticated with domain [_2] '.
1444: '[_3] Version 4 [_4] Version 5',
1445: '<input type="radio" name="login" value="krb" '.
1446: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1447: '<input type="text" size="10" name="krbarg" '.
1448: 'value="'.$krbarg.'" '.
1449: 'onchange="'.$jscall.'" />',
1450: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1451: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1452: return $result;
1453: }
1454:
1455: sub authform_internal{
1456: my %args = (
1457: formname => 'document.cu',
1458: kerb_def_dom => 'MSU.EDU',
1459: @_,
1460: );
1461:
1462: my $intcheck = "";
1463: my $intarg = 'value=""';
1464: if ( grep/^curr_authtype$/,(keys %args) ) {
1465: if ($args{'curr_authtype'} eq 'int') {
1466: $intcheck = " checked=\"on\"";
1467: if ( grep/^curr_autharg$/,(keys %args) ) {
1468: $intarg = "value=\"$args{'curr_autharg'}\"";
1469: }
1470: }
1471: }
1472:
1473: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1474: my $result.=&mt
1475: ('[_1] Internally authenticated (with initial password [_2])',
1476: '<input type="radio" name="login" value="int" '.$intcheck.
1477: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1478: '<input type="text" size="10" name="intarg" '.$intarg.
1479: ' onchange="'.$jscall.'" />');
1480: return $result;
1481: }
1482:
1483: sub authform_local{
1484: my %in = (
1485: formname => 'document.cu',
1486: kerb_def_dom => 'MSU.EDU',
1487: @_,
1488: );
1489:
1490: my $loccheck = "";
1491: my $locarg = 'value=""';
1492: if ( grep/^curr_authtype$/,(keys %in) ) {
1493: if ($in{'curr_authtype'} eq 'loc') {
1494: $loccheck = " checked=\"on\"";
1495: if ( grep/^curr_autharg$/,(keys %in) ) {
1496: $locarg = "value=\"$in{'curr_autharg'}\"";
1497: }
1498: }
1499: }
1500:
1501: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1502: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1503: '<input type="radio" name="login" value="loc" '.$loccheck.
1504: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1505: '<input type="text" size="10" name="locarg" '.$locarg.
1506: ' onchange="'.$jscall.'" />');
1507: return $result;
1508: }
1509:
1510: sub authform_filesystem{
1511: my %in = (
1512: formname => 'document.cu',
1513: kerb_def_dom => 'MSU.EDU',
1514: @_,
1515: );
1516: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1517: my $result.= &mt
1518: ('[_1] Filesystem Authenticated (with initial password [_2])',
1519: '<input type="radio" name="login" value="fsys" '.
1520: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1521: '<input type="text" size="10" name="fsysarg" value="" '.
1522: 'onchange="'.$jscall.'" />');
1523: return $result;
1524: }
1525:
1526: ###############################################################
1527: ## Get Authentication Defaults for Domain ##
1528: ###############################################################
1529:
1530: =pod
1531:
1532: =head1 Domains and Authentication
1533:
1534: Returns default authentication type and an associated argument as
1535: listed in file 'domain.tab'.
1536:
1537: =over 4
1538:
1539: =item * get_auth_defaults
1540:
1541: get_auth_defaults($target_domain) returns the default authentication
1542: type and an associated argument (initial password or a kerberos domain).
1543: These values are stored in lonTabs/domain.tab
1544:
1545: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1546:
1547: If target_domain is not found in domain.tab, returns nothing ('').
1548:
1549: =cut
1550:
1551: #-------------------------------------------
1552: sub get_auth_defaults {
1553: my $domain=shift;
1554: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1555: }
1556: ###############################################################
1557: ## End Get Authentication Defaults for Domain ##
1558: ###############################################################
1559:
1560: ###############################################################
1561: ## Get Kerberos Defaults for Domain ##
1562: ###############################################################
1563: ##
1564: ## Returns default kerberos version and an associated argument
1565: ## as listed in file domain.tab. If not listed, provides
1566: ## appropriate default domain and kerberos version.
1567: ##
1568: #-------------------------------------------
1569:
1570: =pod
1571:
1572: =item * get_kerberos_defaults
1573:
1574: get_kerberos_defaults($target_domain) returns the default kerberos
1575: version and domain. If not found in domain.tabs, it defaults to
1576: version 4 and the domain of the server.
1577:
1578: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1579:
1580: =cut
1581:
1582: #-------------------------------------------
1583: sub get_kerberos_defaults {
1584: my $domain=shift;
1585: my ($krbdef,$krbdefdom) =
1586: &Apache::loncommon::get_auth_defaults($domain);
1587: unless ($krbdef =~/^krb/ && $krbdefdom) {
1588: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1589: my $krbdefdom=$1;
1590: $krbdefdom=~tr/a-z/A-Z/;
1591: $krbdef = "krb4";
1592: }
1593: return ($krbdef,$krbdefdom);
1594: }
1595:
1596: =pod
1597:
1598: =back
1599:
1600: =cut
1601:
1602: ###############################################################
1603: ## Thesaurus Functions ##
1604: ###############################################################
1605:
1606: =pod
1607:
1608: =head1 Thesaurus Functions
1609:
1610: =over 4
1611:
1612: =item * initialize_keywords
1613:
1614: Initializes the package variable %Keywords if it is empty. Uses the
1615: package variable $thesaurus_db_file.
1616:
1617: =cut
1618:
1619: ###################################################
1620:
1621: sub initialize_keywords {
1622: return 1 if (scalar keys(%Keywords));
1623: # If we are here, %Keywords is empty, so fill it up
1624: # Make sure the file we need exists...
1625: if (! -e $thesaurus_db_file) {
1626: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1627: " failed because it does not exist");
1628: return 0;
1629: }
1630: # Set up the hash as a database
1631: my %thesaurus_db;
1632: if (! tie(%thesaurus_db,'GDBM_File',
1633: $thesaurus_db_file,&GDBM_READER(),0640)){
1634: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1635: $thesaurus_db_file);
1636: return 0;
1637: }
1638: # Get the average number of appearances of a word.
1639: my $avecount = $thesaurus_db{'average.count'};
1640: # Put keywords (those that appear > average) into %Keywords
1641: while (my ($word,$data)=each (%thesaurus_db)) {
1642: my ($count,undef) = split /:/,$data;
1643: $Keywords{$word}++ if ($count > $avecount);
1644: }
1645: untie %thesaurus_db;
1646: # Remove special values from %Keywords.
1647: foreach ('total.count','average.count') {
1648: delete($Keywords{$_}) if (exists($Keywords{$_}));
1649: }
1650: return 1;
1651: }
1652:
1653: ###################################################
1654:
1655: =pod
1656:
1657: =item * keyword($word)
1658:
1659: Returns true if $word is a keyword. A keyword is a word that appears more
1660: than the average number of times in the thesaurus database. Calls
1661: &initialize_keywords
1662:
1663: =cut
1664:
1665: ###################################################
1666:
1667: sub keyword {
1668: return if (!&initialize_keywords());
1669: my $word=lc(shift());
1670: $word=~s/\W//g;
1671: return exists($Keywords{$word});
1672: }
1673:
1674: ###############################################################
1675:
1676: =pod
1677:
1678: =item * get_related_words
1679:
1680: Look up a word in the thesaurus. Takes a scalar argument and returns
1681: an array of words. If the keyword is not in the thesaurus, an empty array
1682: will be returned. The order of the words returned is determined by the
1683: database which holds them.
1684:
1685: Uses global $thesaurus_db_file.
1686:
1687: =cut
1688:
1689: ###############################################################
1690: sub get_related_words {
1691: my $keyword = shift;
1692: my %thesaurus_db;
1693: if (! -e $thesaurus_db_file) {
1694: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1695: "failed because the file does not exist");
1696: return ();
1697: }
1698: if (! tie(%thesaurus_db,'GDBM_File',
1699: $thesaurus_db_file,&GDBM_READER(),0640)){
1700: return ();
1701: }
1702: my @Words=();
1703: if (exists($thesaurus_db{$keyword})) {
1704: $_ = $thesaurus_db{$keyword};
1705: (undef,@Words) = split/:/; # The first element is the number of times
1706: # the word appears. We do not need it now.
1707: for (my $i=0;$i<=$#Words;$i++) {
1708: ($Words[$i],undef)= split/\,/,$Words[$i];
1709: }
1710: }
1711: untie %thesaurus_db;
1712: return @Words;
1713: }
1714:
1715: =pod
1716:
1717: =back
1718:
1719: =cut
1720:
1721: # -------------------------------------------------------------- Plaintext name
1722: =pod
1723:
1724: =head1 User Name Functions
1725:
1726: =over 4
1727:
1728: =item * plainname($uname,$udom)
1729:
1730: Takes a users logon name and returns it as a string in
1731: "first middle last generation" form
1732:
1733: =cut
1734:
1735: ###############################################################
1736: sub plainname {
1737: my ($uname,$udom)=@_;
1738: my %names=&Apache::lonnet::get('environment',
1739: ['firstname','middlename','lastname','generation'],
1740: $udom,$uname);
1741: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1742: $names{'lastname'}.' '.$names{'generation'};
1743: $name=~s/\s+$//;
1744: $name=~s/\s+/ /g;
1745: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1746: return $name;
1747: }
1748:
1749: # -------------------------------------------------------------------- Nickname
1750: =pod
1751:
1752: =item * nickname($uname,$udom)
1753:
1754: Gets a users name and returns it as a string as
1755:
1756: ""nickname""
1757:
1758: if the user has a nickname or
1759:
1760: "first middle last generation"
1761:
1762: if the user does not
1763:
1764: =cut
1765:
1766: sub nickname {
1767: my ($uname,$udom)=@_;
1768: my %names=&Apache::lonnet::get('environment',
1769: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1770: my $name=$names{'nickname'};
1771: if ($name) {
1772: $name='"'.$name.'"';
1773: } else {
1774: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1775: $names{'lastname'}.' '.$names{'generation'};
1776: $name=~s/\s+$//;
1777: $name=~s/\s+/ /g;
1778: }
1779: return $name;
1780: }
1781:
1782:
1783: # ------------------------------------------------------------------ Screenname
1784:
1785: =pod
1786:
1787: =item * screenname($uname,$udom)
1788:
1789: Gets a users screenname and returns it as a string
1790:
1791: =cut
1792:
1793: sub screenname {
1794: my ($uname,$udom)=@_;
1795: my %names=
1796: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1797: return $names{'screenname'};
1798: }
1799:
1800: # ------------------------------------------------------------- Message Wrapper
1801:
1802: sub messagewrapper {
1803: my ($link,$username,$domain)=@_;
1804: return
1805: '<a href="/adm/email?compose=individual&'.
1806: 'recname='.$username.'&recdom='.$domain.'" '.
1807: 'title="'.&mt('Send message').'">'.$link.'</a>';
1808: }
1809: # --------------------------------------------------------------- Notes Wrapper
1810:
1811: sub noteswrapper {
1812: my ($link,$un,$do)=@_;
1813: return
1814: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1815: }
1816: # ------------------------------------------------------------- Aboutme Wrapper
1817:
1818: sub aboutmewrapper {
1819: my ($link,$username,$domain,$target)=@_;
1820: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1821: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1822: }
1823:
1824: # ------------------------------------------------------------ Syllabus Wrapper
1825:
1826:
1827: sub syllabuswrapper {
1828: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1829: if ($fontcolor) {
1830: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1831: }
1832: return "<a href='/public/$domain/$coursedir/syllabus'>$linktext</a>";
1833: }
1834:
1835: =pod
1836:
1837: =back
1838:
1839: =head1 Access .tab File Data
1840:
1841: =over 4
1842:
1843: =item * languageids()
1844:
1845: returns list of all language ids
1846:
1847: =cut
1848:
1849: sub languageids {
1850: return sort(keys(%language));
1851: }
1852:
1853: =pod
1854:
1855: =item * languagedescription()
1856:
1857: returns description of a specified language id
1858:
1859: =cut
1860:
1861: sub languagedescription {
1862: my $code=shift;
1863: return ($supported_language{$code}?'* ':'').
1864: $language{$code}.
1865: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1866: }
1867:
1868: sub plainlanguagedescription {
1869: my $code=shift;
1870: return $language{$code};
1871: }
1872:
1873: sub supportedlanguagecode {
1874: my $code=shift;
1875: return $supported_language{$code};
1876: }
1877:
1878: =pod
1879:
1880: =item * copyrightids()
1881:
1882: returns list of all copyrights
1883:
1884: =cut
1885:
1886: sub copyrightids {
1887: return sort(keys(%cprtag));
1888: }
1889:
1890: =pod
1891:
1892: =item * copyrightdescription()
1893:
1894: returns description of a specified copyright id
1895:
1896: =cut
1897:
1898: sub copyrightdescription {
1899: return &mt($cprtag{shift(@_)});
1900: }
1901:
1902: =pod
1903:
1904: =item * source_copyrightids()
1905:
1906: returns list of all source copyrights
1907:
1908: =cut
1909:
1910: sub source_copyrightids {
1911: return sort(keys(%scprtag));
1912: }
1913:
1914: =pod
1915:
1916: =item * source_copyrightdescription()
1917:
1918: returns description of a specified source copyright id
1919:
1920: =cut
1921:
1922: sub source_copyrightdescription {
1923: return &mt($scprtag{shift(@_)});
1924: }
1925:
1926: =pod
1927:
1928: =item * filecategories()
1929:
1930: returns list of all file categories
1931:
1932: =cut
1933:
1934: sub filecategories {
1935: return sort(keys(%category_extensions));
1936: }
1937:
1938: =pod
1939:
1940: =item * filecategorytypes()
1941:
1942: returns list of file types belonging to a given file
1943: category
1944:
1945: =cut
1946:
1947: sub filecategorytypes {
1948: return @{$category_extensions{lc($_[0])}};
1949: }
1950:
1951: =pod
1952:
1953: =item * fileembstyle()
1954:
1955: returns embedding style for a specified file type
1956:
1957: =cut
1958:
1959: sub fileembstyle {
1960: return $fe{lc(shift(@_))};
1961: }
1962:
1963:
1964: sub filecategoryselect {
1965: my ($name,$value)=@_;
1966: return &select_form($value,$name,
1967: '' => &mt('Any category'),
1968: map { $_,$_ } sort(keys(%category_extensions)));
1969: }
1970:
1971: =pod
1972:
1973: =item * filedescription()
1974:
1975: returns description for a specified file type
1976:
1977: =cut
1978:
1979: sub filedescription {
1980: my $file_description = $fd{lc(shift())};
1981: $file_description =~ s:([\[\]]):~$1:g;
1982: return &mt($file_description);
1983: }
1984:
1985: =pod
1986:
1987: =item * filedescriptionex()
1988:
1989: returns description for a specified file type with
1990: extra formatting
1991:
1992: =cut
1993:
1994: sub filedescriptionex {
1995: my $ex=shift;
1996: my $file_description = $fd{lc($ex)};
1997: $file_description =~ s:([\[\]]):~$1:g;
1998: return '.'.$ex.' '.&mt($file_description);
1999: }
2000:
2001: # End of .tab access
2002: =pod
2003:
2004: =back
2005:
2006: =cut
2007:
2008: # ------------------------------------------------------------------ File Types
2009: sub fileextensions {
2010: return sort(keys(%fe));
2011: }
2012:
2013: # ----------------------------------------------------------- Display Languages
2014: # returns a hash with all desired display languages
2015: #
2016:
2017: sub display_languages {
2018: my %languages=();
2019: foreach (&preferred_languages()) {
2020: $languages{$_}=1;
2021: }
2022: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2023: if ($ENV{'form.displaylanguage'}) {
2024: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2025: $languages{$_}=1;
2026: }
2027: }
2028: return %languages;
2029: }
2030:
2031: sub preferred_languages {
2032: my @languages=();
2033: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2034: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2035: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2036: }
2037: if ($ENV{'environment.languages'}) {
2038: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2039: }
2040: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2041: if ($browser) {
2042: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2043: }
2044: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2045: @languages=(@languages,
2046: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2047: }
2048: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2049: @languages=(@languages,
2050: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2051: }
2052: if ($Apache::lonnet::domain_lang_def{
2053: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2054: @languages=(@languages,
2055: $Apache::lonnet::domain_lang_def{
2056: $Apache::lonnet::perlvar{'lonDefDomain'}});
2057: }
2058: # turn "en-ca" into "en-ca,en"
2059: my @genlanguages;
2060: foreach (@languages) {
2061: unless ($_=~/\w/) { next; }
2062: push (@genlanguages,$_);
2063: if ($_=~/(\-|\_)/) {
2064: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2065: }
2066: }
2067: return @genlanguages;
2068: }
2069:
2070: ###############################################################
2071: ## Student Answer Attempts ##
2072: ###############################################################
2073:
2074: =pod
2075:
2076: =head1 Alternate Problem Views
2077:
2078: =over 4
2079:
2080: =item * get_previous_attempt($symb, $username, $domain, $course,
2081: $getattempt, $regexp, $gradesub)
2082:
2083: Return string with previous attempt on problem. Arguments:
2084:
2085: =over 4
2086:
2087: =item * $symb: Problem, including path
2088:
2089: =item * $username: username of the desired student
2090:
2091: =item * $domain: domain of the desired student
2092:
2093: =item * $course: Course ID
2094:
2095: =item * $getattempt: Leave blank for all attempts, otherwise put
2096: something
2097:
2098: =item * $regexp: if string matches this regexp, the string will be
2099: sent to $gradesub
2100:
2101: =item * $gradesub: routine that processes the string if it matches $regexp
2102:
2103: =back
2104:
2105: The output string is a table containing all desired attempts, if any.
2106:
2107: =cut
2108:
2109: sub get_previous_attempt {
2110: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2111: my $prevattempts='';
2112: no strict 'refs';
2113: if ($symb) {
2114: my (%returnhash)=
2115: &Apache::lonnet::restore($symb,$course,$domain,$username);
2116: if ($returnhash{'version'}) {
2117: my %lasthash=();
2118: my $version;
2119: for ($version=1;$version<=$returnhash{'version'};$version++) {
2120: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2121: $lasthash{$_}=$returnhash{$version.':'.$_};
2122: }
2123: }
2124: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2125: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2126: foreach (sort(keys %lasthash)) {
2127: my ($ign,@parts) = split(/\./,$_);
2128: if ($#parts > 0) {
2129: my $data=$parts[-1];
2130: pop(@parts);
2131: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2132: } else {
2133: if ($#parts == 0) {
2134: $prevattempts.='<th>'.$parts[0].'</th>';
2135: } else {
2136: $prevattempts.='<th>'.$ign.'</th>';
2137: }
2138: }
2139: }
2140: if ($getattempt eq '') {
2141: for ($version=1;$version<=$returnhash{'version'};$version++) {
2142: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2143: foreach (sort(keys %lasthash)) {
2144: my $value;
2145: if ($_ =~ /timestamp/) {
2146: $value=scalar(localtime($returnhash{$version.':'.$_}));
2147: } else {
2148: $value=$returnhash{$version.':'.$_};
2149: }
2150: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2151: }
2152: }
2153: }
2154: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2155: foreach (sort(keys %lasthash)) {
2156: my $value;
2157: if ($_ =~ /timestamp/) {
2158: $value=scalar(localtime($lasthash{$_}));
2159: } else {
2160: $value=$lasthash{$_};
2161: }
2162: $value=&Apache::lonnet::unescape($value);
2163: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2164: $prevattempts.='<td>'.$value.' </td>';
2165: }
2166: $prevattempts.='</tr></table></td></tr></table>';
2167: } else {
2168: $prevattempts='Nothing submitted - no attempts.';
2169: }
2170: } else {
2171: $prevattempts='No data.';
2172: }
2173: }
2174:
2175: sub relative_to_absolute {
2176: my ($url,$output)=@_;
2177: my $parser=HTML::TokeParser->new(\$output);
2178: my $token;
2179: my $thisdir=$url;
2180: my @rlinks=();
2181: while ($token=$parser->get_token) {
2182: if ($token->[0] eq 'S') {
2183: if ($token->[1] eq 'a') {
2184: if ($token->[2]->{'href'}) {
2185: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2186: }
2187: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2188: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2189: } elsif ($token->[1] eq 'base') {
2190: $thisdir=$token->[2]->{'href'};
2191: }
2192: }
2193: }
2194: $thisdir=~s-/[^/]*$--;
2195: foreach (@rlinks) {
2196: unless (($_=~/^http:\/\//i) ||
2197: ($_=~/^\//) ||
2198: ($_=~/^javascript:/i) ||
2199: ($_=~/^mailto:/i) ||
2200: ($_=~/^\#/)) {
2201: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2202: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2203: }
2204: }
2205: # -------------------------------------------------- Deal with Applet codebases
2206: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2207: return $output;
2208: }
2209:
2210: =pod
2211:
2212: =item * get_student_view
2213:
2214: show a snapshot of what student was looking at
2215:
2216: =cut
2217:
2218: sub get_student_view {
2219: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2220: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2221: my (%form);
2222: my @elements=('symb','courseid','domain','username');
2223: foreach my $element (@elements) {
2224: $form{'grade_'.$element}=eval '$'.$element #'
2225: }
2226: if (defined($moreenv)) {
2227: %form=(%form,%{$moreenv});
2228: }
2229: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2230: $feedurl=&Apache::lonnet::clutter($feedurl);
2231: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2232: $userview=~s/\<body[^\>]*\>//gi;
2233: $userview=~s/\<\/body\>//gi;
2234: $userview=~s/\<html\>//gi;
2235: $userview=~s/\<\/html\>//gi;
2236: $userview=~s/\<head\>//gi;
2237: $userview=~s/\<\/head\>//gi;
2238: $userview=~s/action\s*\=/would_be_action\=/gi;
2239: $userview=&relative_to_absolute($feedurl,$userview);
2240: return $userview;
2241: }
2242:
2243: =pod
2244:
2245: =item * get_student_answers()
2246:
2247: show a snapshot of how student was answering problem
2248:
2249: =cut
2250:
2251: sub get_student_answers {
2252: my ($symb,$username,$domain,$courseid,%form) = @_;
2253: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2254: my (%moreenv);
2255: my @elements=('symb','courseid','domain','username');
2256: foreach my $element (@elements) {
2257: $moreenv{'grade_'.$element}=eval '$'.$element #'
2258: }
2259: $moreenv{'grade_target'}='answer';
2260: %moreenv=(%form,%moreenv);
2261: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2262: return $userview;
2263: }
2264:
2265: =pod
2266:
2267: =item * &submlink()
2268:
2269: Inputs: $text $uname $udom $symb
2270:
2271: Returns: A link to grades.pm such as to see the SUBM view of a student
2272:
2273: =cut
2274:
2275: ###############################################
2276: sub submlink {
2277: my ($text,$uname,$udom,$symb)=@_;
2278: if (!($uname && $udom)) {
2279: (my $cursymb, my $courseid,$udom,$uname)=
2280: &Apache::lonxml::whichuser($symb);
2281: if (!$symb) { $symb=$cursymb; }
2282: }
2283: if (!$symb) { $symb=&symbread(); }
2284: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2285: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2286: }
2287: ##############################################
2288:
2289: =pod
2290:
2291: =back
2292:
2293: =cut
2294:
2295: ###############################################
2296:
2297:
2298: sub timehash {
2299: my @ltime=localtime(shift);
2300: return ( 'seconds' => $ltime[0],
2301: 'minutes' => $ltime[1],
2302: 'hours' => $ltime[2],
2303: 'day' => $ltime[3],
2304: 'month' => $ltime[4]+1,
2305: 'year' => $ltime[5]+1900,
2306: 'weekday' => $ltime[6],
2307: 'dayyear' => $ltime[7]+1,
2308: 'dlsav' => $ltime[8] );
2309: }
2310:
2311: sub maketime {
2312: my %th=@_;
2313: return POSIX::mktime(
2314: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2315: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
2316: }
2317:
2318: #########################################
2319:
2320: sub findallcourses {
2321: my %courses=();
2322: my $now=time;
2323: foreach (keys %ENV) {
2324: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2325: my ($starttime,$endtime)=$ENV{$_};
2326: my $active=1;
2327: if ($starttime) {
2328: if ($now<$starttime) { $active=0; }
2329: }
2330: if ($endtime) {
2331: if ($now>$endtime) { $active=0; }
2332: }
2333: if ($active) { $courses{$1.'_'.$2}=1; }
2334: }
2335: }
2336: return keys %courses;
2337: }
2338:
2339: ###############################################
2340: ###############################################
2341:
2342: =pod
2343:
2344: =head1 Domain Template Functions
2345:
2346: =over 4
2347:
2348: =item * &determinedomain()
2349:
2350: Inputs: $domain (usually will be undef)
2351:
2352: Returns: Determines which domain should be used for designs
2353:
2354: =cut
2355:
2356: ###############################################
2357: sub determinedomain {
2358: my $domain=shift;
2359: if (! $domain) {
2360: # Determine domain if we have not been given one
2361: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2362: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2363: if ($ENV{'request.role.domain'}) {
2364: $domain=$ENV{'request.role.domain'};
2365: }
2366: }
2367: return $domain;
2368: }
2369: ###############################################
2370: =pod
2371:
2372: =item * &domainlogo()
2373:
2374: Inputs: $domain (usually will be undef)
2375:
2376: Returns: A link to a domain logo, if the domain logo exists.
2377: If the domain logo does not exist, a description of the domain.
2378:
2379: =cut
2380:
2381: ###############################################
2382: sub domainlogo {
2383: my $domain = &determinedomain(shift);
2384: # See if there is a logo
2385: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2386: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2387: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2388: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
2389: '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
2390: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2391: return $Apache::lonnet::domaindescription{$domain};
2392: } else {
2393: return '';
2394: }
2395: }
2396: ##############################################
2397:
2398: =pod
2399:
2400: =item * &designparm()
2401:
2402: Inputs: $which parameter; $domain (usually will be undef)
2403:
2404: Returns: value of designparamter $which
2405:
2406: =cut
2407:
2408: ##############################################
2409: sub designparm {
2410: my ($which,$domain)=@_;
2411: if ($ENV{'browser.blackwhite'} eq 'on') {
2412: if ($which=~/\.(font|alink|vlink|link)$/) {
2413: return '#000000';
2414: }
2415: if ($which=~/\.(pgbg|sidebg)$/) {
2416: return '#FFFFFF';
2417: }
2418: if ($which=~/\.tabbg$/) {
2419: return '#CCCCCC';
2420: }
2421: }
2422: if ($ENV{'environment.color.'.$which}) {
2423: return $ENV{'environment.color.'.$which};
2424: }
2425: $domain=&determinedomain($domain);
2426: if ($designhash{$domain.'.'.$which}) {
2427: return $designhash{$domain.'.'.$which};
2428: } else {
2429: return $designhash{'default.'.$which};
2430: }
2431: }
2432:
2433: ###############################################
2434: ###############################################
2435:
2436: =pod
2437:
2438: =back
2439:
2440: =head1 HTTP Helpers
2441:
2442: =over 4
2443:
2444: =item * &bodytag()
2445:
2446: Returns a uniform header for LON-CAPA web pages.
2447:
2448: Inputs:
2449:
2450: =over 4
2451:
2452: =item * $title, A title to be displayed on the page.
2453:
2454: =item * $function, the current role (can be undef).
2455:
2456: =item * $addentries, extra parameters for the <body> tag.
2457:
2458: =item * $bodyonly, if defined, only return the <body> tag.
2459:
2460: =item * $domain, if defined, force a given domain.
2461:
2462: =item * $forcereg, if page should register as content page (relevant for
2463: text interface only)
2464:
2465: =back
2466:
2467: Returns: A uniform header for LON-CAPA web pages.
2468: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2469: If $bodyonly is undef or zero, an html string containing a <body> tag and
2470: other decorations will be returned.
2471:
2472: =cut
2473:
2474: sub bodytag {
2475: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2476: $title=&mt($title);
2477: $function = &get_users_function() if (!$function);
2478: my $img=&designparm($function.'.img',$domain);
2479: my $pgbg=&designparm($function.'.pgbg',$domain);
2480: my $tabbg=&designparm($function.'.tabbg',$domain);
2481: my $font=&designparm($function.'.font',$domain);
2482: my $link=&designparm($function.'.link',$domain);
2483: my $alink=&designparm($function.'.alink',$domain);
2484: my $vlink=&designparm($function.'.vlink',$domain);
2485: my $sidebg=&designparm($function.'.sidebg',$domain);
2486: # Accessibility font enhance
2487: unless ($addentries) { $addentries=''; }
2488: my $addstyle='';
2489: if ($ENV{'browser.fontenhance'} eq 'on') {
2490: $addstyle=' font-size: x-large;';
2491: }
2492: # role and realm
2493: my ($role,$realm)
2494: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2495: # realm
2496: if ($ENV{'request.course.id'}) {
2497: $realm=
2498: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2499: }
2500: unless ($realm) { $realm=' '; }
2501: # Set messages
2502: my $messages=&domainlogo($domain);
2503: # Port for miniserver
2504: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2505: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2506: # construct main body tag
2507: my $bodytag = <<END;
2508: <style>
2509: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2510: a:focus { color: red; background: yellow }
2511: </style>
2512: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2513: style="margin-top: 0px;$addstyle" $addentries>
2514: END
2515: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2516: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2517: if ($bodyonly) {
2518: return $bodytag;
2519: } elsif ($ENV{'browser.interface'} eq 'textual') {
2520: # Accessibility
2521: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2522: $forcereg).
2523: '<h1>LON-CAPA: '.$title.'</h1>';
2524: } elsif ($ENV{'environment.remote'} eq 'off') {
2525: # No Remote
2526: my $roleinfo=(<<ENDROLE);
2527: <td bgcolor="$tabbg" align="right">
2528: <p>
2529: <font size="2" face="Arial, Helvetica, sans-serif">
2530: $ENV{'environment.firstname'}
2531: $ENV{'environment.middlename'}
2532: $ENV{'environment.lastname'}
2533: $ENV{'environment.generation'}
2534: </font>
2535: <br />
2536: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2537: <br />
2538: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2539: </p>
2540: </td>
2541: ENDROLE
2542: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2543: $forcereg).
2544: '<table bgcolor="'.$pgbg.'" width="100%" border="0" cellspacing="3" cellpadding="3"><tr><td rowspan="3" bgcolor="'.$tabbg.'"><font face="Arial, Helvetica, sans-serif" size="+3" color="'.$font.'"><b>'.$title.
2545: '</b></font></td>'.$roleinfo.'</tr></table>';
2546: }
2547:
2548: #
2549: # Top frame rendering, Remote is up
2550: #
2551: return(<<ENDBODY);
2552: $bodytag
2553: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2554: <tr><td bgcolor="$sidebg">
2555: $upperleft</td>
2556: <td bgcolor="$sidebg" align="right">$messages </td>
2557: </tr>
2558: <tr>
2559: <td rowspan="3" bgcolor="$tabbg">
2560: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2561: <td bgcolor="$tabbg" align="right">
2562: <font size="2" face="Arial, Helvetica, sans-serif">
2563: $ENV{'environment.firstname'}
2564: $ENV{'environment.middlename'}
2565: $ENV{'environment.lastname'}
2566: $ENV{'environment.generation'}
2567: </font>
2568: </td>
2569: </tr>
2570: <tr><td bgcolor="$tabbg" align="right">
2571: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2572: </td></tr>
2573: <tr>
2574: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2575: </table><br />
2576: ENDBODY
2577: }
2578:
2579: ###############################################
2580:
2581: =pod
2582:
2583: =item get_users_function
2584:
2585: Used by &bodytag to determine the current users primary role.
2586: Returns either 'student','coordinator','admin', or 'author'.
2587:
2588: =cut
2589:
2590: ###############################################
2591: sub get_users_function {
2592: my $function = 'student';
2593: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2594: $function='coordinator';
2595: }
2596: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2597: $function='admin';
2598: }
2599: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2600: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2601: $function='author';
2602: }
2603: return $function;
2604: }
2605:
2606: ###############################################
2607:
2608: sub get_posted_cgi {
2609: my $r=shift;
2610:
2611: my $buffer;
2612:
2613: $r->read($buffer,$r->header_in('Content-length'),0);
2614: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2615: my @pairs=split(/&/,$buffer);
2616: my $pair;
2617: foreach $pair (@pairs) {
2618: my ($name,$value) = split(/=/,$pair);
2619: $value =~ tr/+/ /;
2620: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2621: $name =~ tr/+/ /;
2622: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2623: &add_to_env("form.$name",$value);
2624: }
2625: } else {
2626: my $contentsep=$1;
2627: my @lines = split (/\n/,$buffer);
2628: my $name='';
2629: my $value='';
2630: my $fname='';
2631: my $fmime='';
2632: my $i;
2633: for ($i=0;$i<=$#lines;$i++) {
2634: if ($lines[$i]=~/^$contentsep/) {
2635: if ($name) {
2636: chomp($value);
2637: if ($fname) {
2638: $ENV{"form.$name.filename"}=$fname;
2639: $ENV{"form.$name.mimetype"}=$fmime;
2640: } else {
2641: $value=~s/\s+$//s;
2642: }
2643: &add_to_env("form.$name",$value);
2644: }
2645: if ($i<$#lines) {
2646: $i++;
2647: $lines[$i]=~
2648: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2649: $name=$1;
2650: $value='';
2651: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2652: $fname=$1;
2653: if
2654: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2655: $fmime=$1;
2656: $i++;
2657: } else {
2658: $fmime='';
2659: }
2660: } else {
2661: $fname='';
2662: $fmime='';
2663: }
2664: $i++;
2665: }
2666: } else {
2667: $value.=$lines[$i]."\n";
2668: }
2669: }
2670: }
2671: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2672: $r->method_number(M_GET);
2673: $r->method('GET');
2674: $r->headers_in->unset('Content-length');
2675: }
2676:
2677: =pod
2678:
2679: =item * get_unprocessed_cgi($query,$possible_names)
2680:
2681: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2682: $query. The parameters listed in $possible_names (an array reference),
2683: will be set in $ENV{'form.name'} if they do not already exist.
2684:
2685: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2686: $possible_names is an ref to an array of form element names. As an example:
2687: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2688: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2689:
2690: =cut
2691:
2692: sub get_unprocessed_cgi {
2693: my ($query,$possible_names)= @_;
2694: # $Apache::lonxml::debug=1;
2695: foreach (split(/&/,$query)) {
2696: my ($name, $value) = split(/=/,$_);
2697: $name = &Apache::lonnet::unescape($name);
2698: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2699: $value =~ tr/+/ /;
2700: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2701: &Apache::lonxml::debug("Seting :$name: to :$value:");
2702: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2703: }
2704: }
2705: }
2706:
2707: =pod
2708:
2709: =item * cacheheader()
2710:
2711: returns cache-controlling header code
2712:
2713: =cut
2714:
2715: sub cacheheader {
2716: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2717: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2718: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2719: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2720: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2721: return $output;
2722: }
2723:
2724: =pod
2725:
2726: =item * no_cache($r)
2727:
2728: specifies header code to not have cache
2729:
2730: =cut
2731:
2732: sub no_cache {
2733: my ($r) = @_;
2734: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2735: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2736: $r->no_cache(1);
2737: $r->header_out("Pragma" => "no-cache");
2738: #$r->header_out("Expires" => $date);
2739: }
2740:
2741: sub content_type {
2742: my ($r,$type,$charset) = @_;
2743: unless ($charset) {
2744: $charset=&Apache::lonlocal::current_encoding;
2745: }
2746: if ($charset) { $type.='; charset='.$charset; }
2747: if ($r) {
2748: $r->content_type($type);
2749: } else {
2750: print("Content-type: $type\n\n");
2751: }
2752: }
2753:
2754: =pod
2755:
2756: =item * add_to_env($name,$value)
2757:
2758: adds $name to the %ENV hash with value
2759: $value, if $name already exists, the entry is converted to an array
2760: reference and $value is added to the array.
2761:
2762: =cut
2763:
2764: sub add_to_env {
2765: my ($name,$value)=@_;
2766: if (defined($ENV{$name})) {
2767: if (ref($ENV{$name})) {
2768: #already have multiple values
2769: push(@{ $ENV{$name} },$value);
2770: } else {
2771: #first time seeing multiple values, convert hash entry to an arrayref
2772: my $first=$ENV{$name};
2773: undef($ENV{$name});
2774: push(@{ $ENV{$name} },$first,$value);
2775: }
2776: } else {
2777: $ENV{$name}=$value;
2778: }
2779: }
2780:
2781: =pod
2782:
2783: =item * get_env_multiple($name)
2784:
2785: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2786: values may be defined and end up as an array ref.
2787:
2788: returns an array of values
2789:
2790: =cut
2791:
2792: sub get_env_multiple {
2793: my ($name) = @_;
2794: my @values;
2795: if (defined($ENV{$name})) {
2796: # exists is it an array
2797: if (ref($ENV{$name})) {
2798: @values=@{ $ENV{$name} };
2799: } else {
2800: $values[0]=$ENV{$name};
2801: }
2802: }
2803: return(@values);
2804: }
2805:
2806:
2807: =pod
2808:
2809: =back
2810:
2811: =head1 CSV Upload/Handling functions
2812:
2813: =over 4
2814:
2815: =item * upfile_store($r)
2816:
2817: Store uploaded file, $r should be the HTTP Request object,
2818: needs $ENV{'form.upfile'}
2819: returns $datatoken to be put into hidden field
2820:
2821: =cut
2822:
2823: sub upfile_store {
2824: my $r=shift;
2825: $ENV{'form.upfile'}=~s/\r/\n/gs;
2826: $ENV{'form.upfile'}=~s/\f/\n/gs;
2827: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2828: $ENV{'form.upfile'}=~s/\n+$//gs;
2829:
2830: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2831: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2832: {
2833: my $datafile = $r->dir_config('lonDaemons').
2834: '/tmp/'.$datatoken.'.tmp';
2835: if ( open(my $fh,">$datafile") ) {
2836: print $fh $ENV{'form.upfile'};
2837: close($fh);
2838: }
2839: }
2840: return $datatoken;
2841: }
2842:
2843: =pod
2844:
2845: =item * load_tmp_file($r)
2846:
2847: Load uploaded file from tmp, $r should be the HTTP Request object,
2848: needs $ENV{'form.datatoken'},
2849: sets $ENV{'form.upfile'} to the contents of the file
2850:
2851: =cut
2852:
2853: sub load_tmp_file {
2854: my $r=shift;
2855: my @studentdata=();
2856: {
2857: my $studentfile = $r->dir_config('lonDaemons').
2858: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2859: if ( open(my $fh,"<$studentfile") ) {
2860: @studentdata=<$fh>;
2861: close($fh);
2862: }
2863: }
2864: $ENV{'form.upfile'}=join('',@studentdata);
2865: }
2866:
2867: =pod
2868:
2869: =item * upfile_record_sep()
2870:
2871: Separate uploaded file into records
2872: returns array of records,
2873: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2874:
2875: =cut
2876:
2877: sub upfile_record_sep {
2878: if ($ENV{'form.upfiletype'} eq 'xml') {
2879: } else {
2880: return split(/\n/,$ENV{'form.upfile'});
2881: }
2882: }
2883:
2884: =pod
2885:
2886: =item * record_sep($record)
2887:
2888: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2889:
2890: =cut
2891:
2892: sub record_sep {
2893: my $record=shift;
2894: my %components=();
2895: if ($ENV{'form.upfiletype'} eq 'xml') {
2896: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2897: my $i=0;
2898: foreach (split(/\s+/,$record)) {
2899: my $field=$_;
2900: $field=~s/^(\"|\')//;
2901: $field=~s/(\"|\')$//;
2902: $components{$i}=$field;
2903: $i++;
2904: }
2905: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2906: my $i=0;
2907: foreach (split(/\t/,$record)) {
2908: my $field=$_;
2909: $field=~s/^(\"|\')//;
2910: $field=~s/(\"|\')$//;
2911: $components{$i}=$field;
2912: $i++;
2913: }
2914: } else {
2915: my @allfields=split(/\,/,$record);
2916: my $i=0;
2917: my $j;
2918: for ($j=0;$j<=$#allfields;$j++) {
2919: my $field=$allfields[$j];
2920: if ($field=~/^\s*(\"|\')/) {
2921: my $delimiter=$1;
2922: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2923: $j++;
2924: $field.=','.$allfields[$j];
2925: }
2926: $field=~s/^\s*$delimiter//;
2927: $field=~s/$delimiter\s*$//;
2928: }
2929: $components{$i}=$field;
2930: $i++;
2931: }
2932: }
2933: return %components;
2934: }
2935:
2936: ######################################################
2937: ######################################################
2938:
2939: =pod
2940:
2941: =item * upfile_select_html()
2942:
2943: Return HTML code to select a file from the users machine and specify
2944: the file type.
2945:
2946: =cut
2947:
2948: ######################################################
2949: ######################################################
2950: sub upfile_select_html {
2951: my %Types = (
2952: csv => &mt('CSV (comma separated values, spreadsheet)'),
2953: space => &mt('Space separated'),
2954: tab => &mt('Tabulator separated'),
2955: # xml => &mt('HTML/XML'),
2956: );
2957: my $Str = '<input type="file" name="upfile" size="50" />'.
2958: '<br />Type: <select name="upfiletype">';
2959: foreach my $type (sort(keys(%Types))) {
2960: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
2961: }
2962: $Str .= "</select>\n";
2963: return $Str;
2964: }
2965:
2966: ######################################################
2967: ######################################################
2968:
2969: =pod
2970:
2971: =item * csv_print_samples($r,$records)
2972:
2973: Prints a table of sample values from each column uploaded $r is an
2974: Apache Request ref, $records is an arrayref from
2975: &Apache::loncommon::upfile_record_sep
2976:
2977: =cut
2978:
2979: ######################################################
2980: ######################################################
2981: sub csv_print_samples {
2982: my ($r,$records) = @_;
2983: my (%sone,%stwo,%sthree);
2984: %sone=&record_sep($$records[0]);
2985: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2986: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2987: #
2988: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
2989: foreach (sort({$a <=> $b} keys(%sone))) {
2990: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
2991: $r->print('</tr>');
2992: foreach my $hash (\%sone,\%stwo,\%sthree) {
2993: $r->print('<tr>');
2994: foreach (sort({$a <=> $b} keys(%sone))) {
2995: $r->print('<td>');
2996: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
2997: $r->print('</td>');
2998: }
2999: $r->print('</tr>');
3000: }
3001: $r->print('</tr></table><br />'."\n");
3002: }
3003:
3004: ######################################################
3005: ######################################################
3006:
3007: =pod
3008:
3009: =item * csv_print_select_table($r,$records,$d)
3010:
3011: Prints a table to create associations between values and table columns.
3012:
3013: $r is an Apache Request ref,
3014: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3015: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3016:
3017: =cut
3018:
3019: ######################################################
3020: ######################################################
3021: sub csv_print_select_table {
3022: my ($r,$records,$d) = @_;
3023: my $i=0;my %sone;
3024: %sone=&record_sep($$records[0]);
3025: $r->print(&mt('Associate columns with student attributes.')."\n".
3026: '<table border="2"><tr>'.
3027: '<th>'.&mt('Attribute').'</th>'.
3028: '<th>'.&mt('Column').'</th></tr>'."\n");
3029: foreach (@$d) {
3030: my ($value,$display,$defaultcol)=@{ $_ };
3031: $r->print('<tr><td>'.$display.'</td>');
3032:
3033: $r->print('<td><select name=f'.$i.
3034: ' onchange="javascript:flip(this.form,'.$i.');">');
3035: $r->print('<option value="none"></option>');
3036: foreach (sort({$a <=> $b} keys(%sone))) {
3037: $r->print('<option value="'.$_.'"'.
3038: ($_ eq $defaultcol ? ' selected ' : '').
3039: '>Column '.($_+1).'</option>');
3040: }
3041: $r->print('</select></td></tr>'."\n");
3042: $i++;
3043: }
3044: $i--;
3045: return $i;
3046: }
3047:
3048: ######################################################
3049: ######################################################
3050:
3051: =pod
3052:
3053: =item * csv_samples_select_table($r,$records,$d)
3054:
3055: Prints a table of sample values from the upload and can make associate samples to internal names.
3056:
3057: $r is an Apache Request ref,
3058: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3059: $d is an array of 2 element arrays (internal name, displayed name)
3060:
3061: =cut
3062:
3063: ######################################################
3064: ######################################################
3065: sub csv_samples_select_table {
3066: my ($r,$records,$d) = @_;
3067: my %sone; my %stwo; my %sthree;
3068: my $i=0;
3069: #
3070: $r->print('<table border=2><tr><th>'.
3071: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3072: %sone=&record_sep($$records[0]);
3073: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3074: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3075: #
3076: foreach (sort keys %sone) {
3077: $r->print('<tr><td><select name="f'.$i.'"'.
3078: ' onchange="javascript:flip(this.form,'.$i.');">');
3079: foreach (@$d) {
3080: my ($value,$display,$defaultcol)=@{ $_ };
3081: $r->print('<option value="'.$value.'"'.
3082: ($i eq $defaultcol ? ' selected ':'').'>'.
3083: $display.'</option>');
3084: }
3085: $r->print('</select></td><td>');
3086: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3087: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3088: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3089: $r->print('</td></tr>');
3090: $i++;
3091: }
3092: $i--;
3093: return($i);
3094: }
3095:
3096: ######################################################
3097: ######################################################
3098:
3099: =pod
3100:
3101: =item clean_excel_name($name)
3102:
3103: Returns a replacement for $name which does not contain any illegal characters.
3104:
3105: =cut
3106:
3107: ######################################################
3108: ######################################################
3109: sub clean_excel_name {
3110: my ($name) = @_;
3111: $name =~ s/[:\*\?\/\\]//g;
3112: if (length($name) > 31) {
3113: $name = substr($name,0,31);
3114: }
3115: return $name;
3116: }
3117:
3118: =pod
3119:
3120: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3121:
3122: Returns either 1 or undef
3123:
3124: 1 if the part is to be hidden, undef if it is to be shown
3125:
3126: Arguments are:
3127:
3128: $id the id of the part to be checked
3129: $symb, optional the symb of the resource to check
3130: $udom, optional the domain of the user to check for
3131: $uname, optional the username of the user to check for
3132:
3133: =cut
3134:
3135: sub check_if_partid_hidden {
3136: my ($id,$symb,$udom,$uname) = @_;
3137: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3138: $symb,$udom,$uname);
3139: my $truth=1;
3140: #if the string starts with !, then the list is the list to show not hide
3141: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3142: my @hiddenlist=split(/,/,$hiddenparts);
3143: foreach my $checkid (@hiddenlist) {
3144: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3145: }
3146: return !$truth;
3147: }
3148:
3149:
3150: ############################################################
3151: ############################################################
3152:
3153: =pod
3154:
3155: =back
3156:
3157: =head1 cgi-bin script and graphing routines
3158:
3159: =over 4
3160:
3161: =item get_cgi_id
3162:
3163: Inputs: none
3164:
3165: Returns an id which can be used to pass environment variables
3166: to various cgi-bin scripts. These environment variables will
3167: be removed from the users environment after a given time by
3168: the routine &Apache::lonnet::transfer_profile_to_env.
3169:
3170: =cut
3171:
3172: ############################################################
3173: ############################################################
3174: my $uniq=0;
3175: sub get_cgi_id {
3176: $uniq=($uniq+1)%100000;
3177: return (time.'_'.$uniq);
3178: }
3179:
3180: ############################################################
3181: ############################################################
3182:
3183: =pod
3184:
3185: =item DrawBarGraph
3186:
3187: Facilitates the plotting of data in a (stacked) bar graph.
3188: Puts plot definition data into the users environment in order for
3189: graph.png to plot it. Returns an <img> tag for the plot.
3190: The bars on the plot are labeled '1','2',...,'n'.
3191:
3192: Inputs:
3193:
3194: =over 4
3195:
3196: =item $Title: string, the title of the plot
3197:
3198: =item $xlabel: string, text describing the X-axis of the plot
3199:
3200: =item $ylabel: string, text describing the Y-axis of the plot
3201:
3202: =item $Max: scalar, the maximum Y value to use in the plot
3203: If $Max is < any data point, the graph will not be rendered.
3204:
3205: =item $colors: array ref holding the colors to be used for the data sets when
3206: they are plotted. If undefined, default values will be used.
3207:
3208: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3209:
3210: =item @Values: An array of array references. Each array reference holds data
3211: to be plotted in a stacked bar chart.
3212:
3213: =back
3214:
3215: Returns:
3216:
3217: An <img> tag which references graph.png and the appropriate identifying
3218: information for the plot.
3219:
3220: =cut
3221:
3222: ############################################################
3223: ############################################################
3224: sub DrawBarGraph {
3225: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3226: #
3227: if (! defined($colors)) {
3228: $colors = ['#33ff00',
3229: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3230: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3231: ];
3232: }
3233: #
3234: my $identifier = &get_cgi_id();
3235: my $id = 'cgi.'.$identifier;
3236: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3237: return '';
3238: }
3239: my $NumBars = scalar(@{$Values[0]});
3240: my %ValuesHash;
3241: my $NumSets=1;
3242: foreach my $array (@Values) {
3243: next if (! ref($array));
3244: $ValuesHash{$id.'.data.'.$NumSets++} =
3245: join(',',@$array);
3246: }
3247: #
3248: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3249: if ($NumBars < 10) {
3250: $width = 120+$NumBars*15;
3251: $xskip = 1;
3252: $bar_width = 15;
3253: } elsif ($NumBars <= 25) {
3254: $width = 120+$NumBars*11;
3255: $xskip = 5;
3256: $bar_width = 8;
3257: } elsif ($NumBars <= 50) {
3258: $width = 120+$NumBars*8;
3259: $xskip = 5;
3260: $bar_width = 4;
3261: } else {
3262: $width = 120+$NumBars*8;
3263: $xskip = 5;
3264: $bar_width = 4;
3265: }
3266: #
3267: my @Labels;
3268: if (defined($labels)) {
3269: @Labels = @$labels;
3270: } else {
3271: for (my $i=0;$i<@{$Values[0]};$i++) {
3272: push (@Labels,$i+1);
3273: }
3274: }
3275: #
3276: $Max = 1 if ($Max < 1);
3277: if ( int($Max) < $Max ) {
3278: $Max++;
3279: $Max = int($Max);
3280: }
3281: $Title = '' if (! defined($Title));
3282: $xlabel = '' if (! defined($xlabel));
3283: $ylabel = '' if (! defined($ylabel));
3284: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3285: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3286: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3287: $ValuesHash{$id.'.y_max_value'} = $Max;
3288: $ValuesHash{$id.'.NumBars'} = $NumBars;
3289: $ValuesHash{$id.'.NumSets'} = $NumSets;
3290: $ValuesHash{$id.'.PlotType'} = 'bar';
3291: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3292: $ValuesHash{$id.'.height'} = $height;
3293: $ValuesHash{$id.'.width'} = $width;
3294: $ValuesHash{$id.'.xskip'} = $xskip;
3295: $ValuesHash{$id.'.bar_width'} = $bar_width;
3296: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3297: #
3298: &Apache::lonnet::appenv(%ValuesHash);
3299: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3300: }
3301:
3302: ############################################################
3303: ############################################################
3304:
3305: =pod
3306:
3307: =item DrawXYGraph
3308:
3309: Facilitates the plotting of data in an XY graph.
3310: Puts plot definition data into the users environment in order for
3311: graph.png to plot it. Returns an <img> tag for the plot.
3312:
3313: Inputs:
3314:
3315: =over 4
3316:
3317: =item $Title: string, the title of the plot
3318:
3319: =item $xlabel: string, text describing the X-axis of the plot
3320:
3321: =item $ylabel: string, text describing the Y-axis of the plot
3322:
3323: =item $Max: scalar, the maximum Y value to use in the plot
3324: If $Max is < any data point, the graph will not be rendered.
3325:
3326: =item $colors: Array ref containing the hex color codes for the data to be
3327: plotted in. If undefined, default values will be used.
3328:
3329: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3330:
3331: =item $Ydata: Array ref containing Array refs.
3332: Each of the contained arrays will be plotted as a separate curve.
3333:
3334: =item %Values: hash indicating or overriding any default values which are
3335: passed to graph.png.
3336: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3337:
3338: =back
3339:
3340: Returns:
3341:
3342: An <img> tag which references graph.png and the appropriate identifying
3343: information for the plot.
3344:
3345: =cut
3346:
3347: ############################################################
3348: ############################################################
3349: sub DrawXYGraph {
3350: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3351: #
3352: # Create the identifier for the graph
3353: my $identifier = &get_cgi_id();
3354: my $id = 'cgi.'.$identifier;
3355: #
3356: $Title = '' if (! defined($Title));
3357: $xlabel = '' if (! defined($xlabel));
3358: $ylabel = '' if (! defined($ylabel));
3359: my %ValuesHash =
3360: (
3361: $id.'.title' => &Apache::lonnet::escape($Title),
3362: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3363: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3364: $id.'.y_max_value'=> $Max,
3365: $id.'.labels' => join(',',@$Xlabels),
3366: $id.'.PlotType' => 'XY',
3367: );
3368: #
3369: if (defined($colors) && ref($colors) eq 'ARRAY') {
3370: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3371: }
3372: #
3373: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3374: return '';
3375: }
3376: my $NumSets=1;
3377: foreach my $array (@{$Ydata}){
3378: next if (! ref($array));
3379: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3380: }
3381: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3382: #
3383: # Deal with other parameters
3384: while (my ($key,$value) = each(%Values)) {
3385: $ValuesHash{$id.'.'.$key} = $value;
3386: }
3387: #
3388: &Apache::lonnet::appenv(%ValuesHash);
3389: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3390: }
3391:
3392: ############################################################
3393: ############################################################
3394:
3395: =pod
3396:
3397: =item DrawXYYGraph
3398:
3399: Facilitates the plotting of data in an XY graph with two Y axes.
3400: Puts plot definition data into the users environment in order for
3401: graph.png to plot it. Returns an <img> tag for the plot.
3402:
3403: Inputs:
3404:
3405: =over 4
3406:
3407: =item $Title: string, the title of the plot
3408:
3409: =item $xlabel: string, text describing the X-axis of the plot
3410:
3411: =item $ylabel: string, text describing the Y-axis of the plot
3412:
3413: =item $colors: Array ref containing the hex color codes for the data to be
3414: plotted in. If undefined, default values will be used.
3415:
3416: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3417:
3418: =item $Ydata1: The first data set
3419:
3420: =item $Min1: The minimum value of the left Y-axis
3421:
3422: =item $Max1: The maximum value of the left Y-axis
3423:
3424: =item $Ydata2: The second data set
3425:
3426: =item $Min2: The minimum value of the right Y-axis
3427:
3428: =item $Max2: The maximum value of the left Y-axis
3429:
3430: =item %Values: hash indicating or overriding any default values which are
3431: passed to graph.png.
3432: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3433:
3434: =back
3435:
3436: Returns:
3437:
3438: An <img> tag which references graph.png and the appropriate identifying
3439: information for the plot.
3440:
3441: =cut
3442:
3443: ############################################################
3444: ############################################################
3445: sub DrawXYYGraph {
3446: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3447: $Ydata2,$Min2,$Max2,%Values)=@_;
3448: #
3449: # Create the identifier for the graph
3450: my $identifier = &get_cgi_id();
3451: my $id = 'cgi.'.$identifier;
3452: #
3453: $Title = '' if (! defined($Title));
3454: $xlabel = '' if (! defined($xlabel));
3455: $ylabel = '' if (! defined($ylabel));
3456: my %ValuesHash =
3457: (
3458: $id.'.title' => &Apache::lonnet::escape($Title),
3459: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3460: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3461: $id.'.labels' => join(',',@$Xlabels),
3462: $id.'.PlotType' => 'XY',
3463: $id.'.NumSets' => 2,
3464: $id.'.two_axes' => 1,
3465: $id.'.y1_max_value' => $Max1,
3466: $id.'.y1_min_value' => $Min1,
3467: $id.'.y2_max_value' => $Max2,
3468: $id.'.y2_min_value' => $Min2,
3469: );
3470: #
3471: if (defined($colors) && ref($colors) eq 'ARRAY') {
3472: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3473: }
3474: #
3475: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3476: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3477: return '';
3478: }
3479: my $NumSets=1;
3480: foreach my $array ($Ydata1,$Ydata2){
3481: next if (! ref($array));
3482: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3483: }
3484: #
3485: # Deal with other parameters
3486: while (my ($key,$value) = each(%Values)) {
3487: $ValuesHash{$id.'.'.$key} = $value;
3488: }
3489: #
3490: &Apache::lonnet::appenv(%ValuesHash);
3491: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3492: }
3493:
3494: ############################################################
3495: ############################################################
3496:
3497: =pod
3498:
3499: =back
3500:
3501: =head1 Statistics helper routines?
3502:
3503: Bad place for them but what the hell.
3504:
3505: =over 4
3506:
3507: =item &chartlink
3508:
3509: Returns a link to the chart for a specific student.
3510:
3511: Inputs:
3512:
3513: =over 4
3514:
3515: =item $linktext: The text of the link
3516:
3517: =item $sname: The students username
3518:
3519: =item $sdomain: The students domain
3520:
3521: =back
3522:
3523: =back
3524:
3525: =cut
3526:
3527: ############################################################
3528: ############################################################
3529: sub chartlink {
3530: my ($linktext, $sname, $sdomain) = @_;
3531: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3532: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3533: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3534: '">'.$linktext.'</a>';
3535: }
3536:
3537: #######################################################
3538: #######################################################
3539:
3540: =pod
3541:
3542: =head1 Course Environment Routines
3543:
3544: =over 4
3545:
3546: =item &restore_course_settings
3547:
3548: =item &store_course_settings
3549:
3550: Restores/Store indicated form parameters from the course environment.
3551: Will not overwrite existing values of the form parameters.
3552:
3553: Inputs:
3554: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3555:
3556: a hash ref describing the data to be stored. For example:
3557:
3558: %Save_Parameters = ('Status' => 'scalar',
3559: 'chartoutputmode' => 'scalar',
3560: 'chartoutputdata' => 'scalar',
3561: 'Section' => 'array',
3562: 'StudentData' => 'array',
3563: 'Maps' => 'array');
3564:
3565: Returns: both routines return nothing
3566:
3567: =cut
3568:
3569: #######################################################
3570: #######################################################
3571: sub store_course_settings {
3572: # save to the environment
3573: # appenv the same items, just to be safe
3574: my $courseid = $ENV{'request.course.id'};
3575: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3576: my ($prefix,$Settings) = @_;
3577: my %SaveHash;
3578: my %AppHash;
3579: while (my ($setting,$type) = each(%$Settings)) {
3580: my $basename = 'internal.'.$prefix.'.'.$setting;
3581: my $envname = 'course.'.$courseid.'.'.$basename;
3582: if (exists($ENV{'form.'.$setting})) {
3583: # Save this value away
3584: if ($type eq 'scalar' &&
3585: (! exists($ENV{$envname}) ||
3586: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3587: $SaveHash{$basename} = $ENV{'form.'.$setting};
3588: $AppHash{$envname} = $ENV{'form.'.$setting};
3589: } elsif ($type eq 'array') {
3590: my $stored_form;
3591: if (ref($ENV{'form.'.$setting})) {
3592: $stored_form = join(',',
3593: map {
3594: &Apache::lonnet::escape($_);
3595: } sort(@{$ENV{'form.'.$setting}}));
3596: } else {
3597: $stored_form =
3598: &Apache::lonnet::escape($ENV{'form.'.$setting});
3599: }
3600: # Determine if the array contents are the same.
3601: if ($stored_form ne $ENV{$envname}) {
3602: $SaveHash{$basename} = $stored_form;
3603: $AppHash{$envname} = $stored_form;
3604: }
3605: }
3606: }
3607: }
3608: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3609: $coursedom,
3610: $ENV{'course.'.$courseid.'.num'});
3611: if ($put_result !~ /^(ok|delayed)/) {
3612: &Apache::lonnet::logthis('unable to save form parameters, '.
3613: 'got error:'.$put_result);
3614: }
3615: # Make sure these settings stick around in this session, too
3616: &Apache::lonnet::appenv(%AppHash);
3617: return;
3618: }
3619:
3620: sub restore_course_settings {
3621: my $courseid = $ENV{'request.course.id'};
3622: my ($prefix,$Settings) = @_;
3623: while (my ($setting,$type) = each(%$Settings)) {
3624: next if (exists($ENV{'form.'.$setting}));
3625: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3626: '.'.$setting;
3627: if (exists($ENV{$envname})) {
3628: if ($type eq 'scalar') {
3629: $ENV{'form.'.$setting} = $ENV{$envname};
3630: } elsif ($type eq 'array') {
3631: $ENV{'form.'.$setting} = [
3632: map {
3633: &Apache::lonnet::unescape($_);
3634: } split(',',$ENV{$envname})
3635: ];
3636: }
3637: }
3638: }
3639: }
3640:
3641: ############################################################
3642: ############################################################
3643:
3644: sub propath {
3645: my ($udom,$uname)=@_;
3646: $udom=~s/\W//g;
3647: $uname=~s/\W//g;
3648: my $subdir=$uname.'__';
3649: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3650: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3651: return $proname;
3652: }
3653:
3654: sub icon {
3655: my ($file)=@_;
3656: my $curfext = (split(/\./,$file))[-1];
3657: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3658: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3659: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3660: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3661: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3662: $curfext.".gif") {
3663: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3664: $curfext.".gif";
3665: }
3666: }
3667: return $iconname;
3668: }
3669:
3670: =pod
3671:
3672: =back
3673:
3674: =cut
3675:
3676: 1;
3677: __END__;
3678:
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