1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.213 2004/09/24 20:32:02 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: $template .=
670: "<table bgcolor='#773311' cellspacing='1' cellpadding='1' border='0'><tr>".
671: "<td bgcolor='#886622'><a href=\"$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: 'mm/dd/yyyy hh:mm:ss');
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,$udom)=@_;
1768: my %names;
1769: if ($uname eq $ENV{'user.name'} &&
1770: $udom eq $ENV{'user.domain'}) {
1771: %names=('nickname' => $ENV{'environment.nickname'} ,
1772: 'firstname' => $ENV{'environment.firstname'} ,
1773: 'middlename' => $ENV{'environment.middlename'},
1774: 'lastname' => $ENV{'environment.lastname'} ,
1775: 'generation' => $ENV{'environment.generation'});
1776: } else {
1777: %names=&Apache::lonnet::get('environment',
1778: ['nickname','firstname','middlename',
1779: 'lastname','generation'],$udom,$uname);
1780: }
1781: my $name=$names{'nickname'};
1782: if ($name) {
1783: $name='"'.$name.'"';
1784: } else {
1785: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1786: $names{'lastname'}.' '.$names{'generation'};
1787: $name=~s/\s+$//;
1788: $name=~s/\s+/ /g;
1789: }
1790: return $name;
1791: }
1792:
1793:
1794: # ------------------------------------------------------------------ Screenname
1795:
1796: =pod
1797:
1798: =item * screenname($uname,$udom)
1799:
1800: Gets a users screenname and returns it as a string
1801:
1802: =cut
1803:
1804: sub screenname {
1805: my ($uname,$udom)=@_;
1806: if ($uname eq $ENV{'user.name'} &&
1807: $udom eq $ENV{'user.domain'}) {return $ENV{'environment.screenname'};}
1808: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1809: return $names{'screenname'};
1810: }
1811:
1812:
1813: # ------------------------------------------------------------- Message Wrapper
1814:
1815: sub messagewrapper {
1816: my ($link,$username,$domain)=@_;
1817: return
1818: '<a href="/adm/email?compose=individual&'.
1819: 'recname='.$username.'&recdom='.$domain.'" '.
1820: 'title="'.&mt('Send message').'">'.$link.'</a>';
1821: }
1822: # --------------------------------------------------------------- Notes Wrapper
1823:
1824: sub noteswrapper {
1825: my ($link,$un,$do)=@_;
1826: return
1827: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1828: }
1829: # ------------------------------------------------------------- Aboutme Wrapper
1830:
1831: sub aboutmewrapper {
1832: my ($link,$username,$domain,$target)=@_;
1833: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1834: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1835: }
1836:
1837: # ------------------------------------------------------------ Syllabus Wrapper
1838:
1839:
1840: sub syllabuswrapper {
1841: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1842: if ($fontcolor) {
1843: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1844: }
1845: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1846: }
1847:
1848: sub track_student_link {
1849: my ($linktext,$sname,$sdom,$target) = @_;
1850: my $link ="/adm/trackstudent";
1851: my $title = 'View recent activity';
1852: if (defined($sname) && $sname !~ /^\s*$/ &&
1853: defined($sdom) && $sdom !~ /^\s*$/) {
1854: $link .= "?selected_student=$sname:$sdom";
1855: $title .= ' of this student';
1856: }
1857: if (defined($target) && $target !~ /^\s*$/) {
1858: $target = qq{target="$target"};
1859: } else {
1860: $target = '';
1861: }
1862: return qq{<a href="$link" title="$title" $target>$linktext</a>};
1863: }
1864:
1865:
1866:
1867: =pod
1868:
1869: =back
1870:
1871: =head1 Access .tab File Data
1872:
1873: =over 4
1874:
1875: =item * languageids()
1876:
1877: returns list of all language ids
1878:
1879: =cut
1880:
1881: sub languageids {
1882: return sort(keys(%language));
1883: }
1884:
1885: =pod
1886:
1887: =item * languagedescription()
1888:
1889: returns description of a specified language id
1890:
1891: =cut
1892:
1893: sub languagedescription {
1894: my $code=shift;
1895: return ($supported_language{$code}?'* ':'').
1896: $language{$code}.
1897: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1898: }
1899:
1900: sub plainlanguagedescription {
1901: my $code=shift;
1902: return $language{$code};
1903: }
1904:
1905: sub supportedlanguagecode {
1906: my $code=shift;
1907: return $supported_language{$code};
1908: }
1909:
1910: =pod
1911:
1912: =item * copyrightids()
1913:
1914: returns list of all copyrights
1915:
1916: =cut
1917:
1918: sub copyrightids {
1919: return sort(keys(%cprtag));
1920: }
1921:
1922: =pod
1923:
1924: =item * copyrightdescription()
1925:
1926: returns description of a specified copyright id
1927:
1928: =cut
1929:
1930: sub copyrightdescription {
1931: return &mt($cprtag{shift(@_)});
1932: }
1933:
1934: =pod
1935:
1936: =item * source_copyrightids()
1937:
1938: returns list of all source copyrights
1939:
1940: =cut
1941:
1942: sub source_copyrightids {
1943: return sort(keys(%scprtag));
1944: }
1945:
1946: =pod
1947:
1948: =item * source_copyrightdescription()
1949:
1950: returns description of a specified source copyright id
1951:
1952: =cut
1953:
1954: sub source_copyrightdescription {
1955: return &mt($scprtag{shift(@_)});
1956: }
1957:
1958: =pod
1959:
1960: =item * filecategories()
1961:
1962: returns list of all file categories
1963:
1964: =cut
1965:
1966: sub filecategories {
1967: return sort(keys(%category_extensions));
1968: }
1969:
1970: =pod
1971:
1972: =item * filecategorytypes()
1973:
1974: returns list of file types belonging to a given file
1975: category
1976:
1977: =cut
1978:
1979: sub filecategorytypes {
1980: return @{$category_extensions{lc($_[0])}};
1981: }
1982:
1983: =pod
1984:
1985: =item * fileembstyle()
1986:
1987: returns embedding style for a specified file type
1988:
1989: =cut
1990:
1991: sub fileembstyle {
1992: return $fe{lc(shift(@_))};
1993: }
1994:
1995:
1996: sub filecategoryselect {
1997: my ($name,$value)=@_;
1998: return &select_form($value,$name,
1999: '' => &mt('Any category'),
2000: map { $_,$_ } sort(keys(%category_extensions)));
2001: }
2002:
2003: =pod
2004:
2005: =item * filedescription()
2006:
2007: returns description for a specified file type
2008:
2009: =cut
2010:
2011: sub filedescription {
2012: my $file_description = $fd{lc(shift())};
2013: $file_description =~ s:([\[\]]):~$1:g;
2014: return &mt($file_description);
2015: }
2016:
2017: =pod
2018:
2019: =item * filedescriptionex()
2020:
2021: returns description for a specified file type with
2022: extra formatting
2023:
2024: =cut
2025:
2026: sub filedescriptionex {
2027: my $ex=shift;
2028: my $file_description = $fd{lc($ex)};
2029: $file_description =~ s:([\[\]]):~$1:g;
2030: return '.'.$ex.' '.&mt($file_description);
2031: }
2032:
2033: # End of .tab access
2034: =pod
2035:
2036: =back
2037:
2038: =cut
2039:
2040: # ------------------------------------------------------------------ File Types
2041: sub fileextensions {
2042: return sort(keys(%fe));
2043: }
2044:
2045: # ----------------------------------------------------------- Display Languages
2046: # returns a hash with all desired display languages
2047: #
2048:
2049: sub display_languages {
2050: my %languages=();
2051: foreach (&preferred_languages()) {
2052: $languages{$_}=1;
2053: }
2054: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2055: if ($ENV{'form.displaylanguage'}) {
2056: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2057: $languages{$_}=1;
2058: }
2059: }
2060: return %languages;
2061: }
2062:
2063: sub preferred_languages {
2064: my @languages=();
2065: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2066: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2067: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2068: }
2069: if ($ENV{'environment.languages'}) {
2070: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2071: }
2072: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2073: if ($browser) {
2074: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2075: }
2076: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2077: @languages=(@languages,
2078: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2079: }
2080: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2081: @languages=(@languages,
2082: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2083: }
2084: if ($Apache::lonnet::domain_lang_def{
2085: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2086: @languages=(@languages,
2087: $Apache::lonnet::domain_lang_def{
2088: $Apache::lonnet::perlvar{'lonDefDomain'}});
2089: }
2090: # turn "en-ca" into "en-ca,en"
2091: my @genlanguages;
2092: foreach (@languages) {
2093: unless ($_=~/\w/) { next; }
2094: push (@genlanguages,$_);
2095: if ($_=~/(\-|\_)/) {
2096: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2097: }
2098: }
2099: return @genlanguages;
2100: }
2101:
2102: ###############################################################
2103: ## Student Answer Attempts ##
2104: ###############################################################
2105:
2106: =pod
2107:
2108: =head1 Alternate Problem Views
2109:
2110: =over 4
2111:
2112: =item * get_previous_attempt($symb, $username, $domain, $course,
2113: $getattempt, $regexp, $gradesub)
2114:
2115: Return string with previous attempt on problem. Arguments:
2116:
2117: =over 4
2118:
2119: =item * $symb: Problem, including path
2120:
2121: =item * $username: username of the desired student
2122:
2123: =item * $domain: domain of the desired student
2124:
2125: =item * $course: Course ID
2126:
2127: =item * $getattempt: Leave blank for all attempts, otherwise put
2128: something
2129:
2130: =item * $regexp: if string matches this regexp, the string will be
2131: sent to $gradesub
2132:
2133: =item * $gradesub: routine that processes the string if it matches $regexp
2134:
2135: =back
2136:
2137: The output string is a table containing all desired attempts, if any.
2138:
2139: =cut
2140:
2141: sub get_previous_attempt {
2142: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2143: my $prevattempts='';
2144: no strict 'refs';
2145: if ($symb) {
2146: my (%returnhash)=
2147: &Apache::lonnet::restore($symb,$course,$domain,$username);
2148: if ($returnhash{'version'}) {
2149: my %lasthash=();
2150: my $version;
2151: for ($version=1;$version<=$returnhash{'version'};$version++) {
2152: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2153: $lasthash{$_}=$returnhash{$version.':'.$_};
2154: }
2155: }
2156: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2157: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2158: foreach (sort(keys %lasthash)) {
2159: my ($ign,@parts) = split(/\./,$_);
2160: if ($#parts > 0) {
2161: my $data=$parts[-1];
2162: pop(@parts);
2163: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2164: } else {
2165: if ($#parts == 0) {
2166: $prevattempts.='<th>'.$parts[0].'</th>';
2167: } else {
2168: $prevattempts.='<th>'.$ign.'</th>';
2169: }
2170: }
2171: }
2172: if ($getattempt eq '') {
2173: for ($version=1;$version<=$returnhash{'version'};$version++) {
2174: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2175: foreach (sort(keys %lasthash)) {
2176: my $value;
2177: if ($_ =~ /timestamp/) {
2178: $value=scalar(localtime($returnhash{$version.':'.$_}));
2179: } else {
2180: $value=$returnhash{$version.':'.$_};
2181: }
2182: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2183: }
2184: }
2185: }
2186: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2187: foreach (sort(keys %lasthash)) {
2188: my $value;
2189: if ($_ =~ /timestamp/) {
2190: $value=scalar(localtime($lasthash{$_}));
2191: } else {
2192: $value=$lasthash{$_};
2193: }
2194: $value=&Apache::lonnet::unescape($value);
2195: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2196: $prevattempts.='<td>'.$value.' </td>';
2197: }
2198: $prevattempts.='</tr></table></td></tr></table>';
2199: } else {
2200: $prevattempts='Nothing submitted - no attempts.';
2201: }
2202: } else {
2203: $prevattempts='No data.';
2204: }
2205: }
2206:
2207: sub relative_to_absolute {
2208: my ($url,$output)=@_;
2209: my $parser=HTML::TokeParser->new(\$output);
2210: my $token;
2211: my $thisdir=$url;
2212: my @rlinks=();
2213: while ($token=$parser->get_token) {
2214: if ($token->[0] eq 'S') {
2215: if ($token->[1] eq 'a') {
2216: if ($token->[2]->{'href'}) {
2217: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2218: }
2219: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2220: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2221: } elsif ($token->[1] eq 'base') {
2222: $thisdir=$token->[2]->{'href'};
2223: }
2224: }
2225: }
2226: $thisdir=~s-/[^/]*$--;
2227: foreach (@rlinks) {
2228: unless (($_=~/^http:\/\//i) ||
2229: ($_=~/^\//) ||
2230: ($_=~/^javascript:/i) ||
2231: ($_=~/^mailto:/i) ||
2232: ($_=~/^\#/)) {
2233: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2234: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2235: }
2236: }
2237: # -------------------------------------------------- Deal with Applet codebases
2238: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2239: return $output;
2240: }
2241:
2242: =pod
2243:
2244: =item * get_student_view
2245:
2246: show a snapshot of what student was looking at
2247:
2248: =cut
2249:
2250: sub get_student_view {
2251: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2252: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2253: my (%form);
2254: my @elements=('symb','courseid','domain','username');
2255: foreach my $element (@elements) {
2256: $form{'grade_'.$element}=eval '$'.$element #'
2257: }
2258: if (defined($moreenv)) {
2259: %form=(%form,%{$moreenv});
2260: }
2261: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2262: $feedurl=&Apache::lonnet::clutter($feedurl);
2263: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2264: $userview=~s/\<body[^\>]*\>//gi;
2265: $userview=~s/\<\/body\>//gi;
2266: $userview=~s/\<html\>//gi;
2267: $userview=~s/\<\/html\>//gi;
2268: $userview=~s/\<head\>//gi;
2269: $userview=~s/\<\/head\>//gi;
2270: $userview=~s/action\s*\=/would_be_action\=/gi;
2271: $userview=&relative_to_absolute($feedurl,$userview);
2272: return $userview;
2273: }
2274:
2275: =pod
2276:
2277: =item * get_student_answers()
2278:
2279: show a snapshot of how student was answering problem
2280:
2281: =cut
2282:
2283: sub get_student_answers {
2284: my ($symb,$username,$domain,$courseid,%form) = @_;
2285: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2286: my (%moreenv);
2287: my @elements=('symb','courseid','domain','username');
2288: foreach my $element (@elements) {
2289: $moreenv{'grade_'.$element}=eval '$'.$element #'
2290: }
2291: $moreenv{'grade_target'}='answer';
2292: %moreenv=(%form,%moreenv);
2293: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2294: return $userview;
2295: }
2296:
2297: =pod
2298:
2299: =item * &submlink()
2300:
2301: Inputs: $text $uname $udom $symb
2302:
2303: Returns: A link to grades.pm such as to see the SUBM view of a student
2304:
2305: =cut
2306:
2307: ###############################################
2308: sub submlink {
2309: my ($text,$uname,$udom,$symb)=@_;
2310: if (!($uname && $udom)) {
2311: (my $cursymb, my $courseid,$udom,$uname)=
2312: &Apache::lonxml::whichuser($symb);
2313: if (!$symb) { $symb=$cursymb; }
2314: }
2315: if (!$symb) { $symb=&symbread(); }
2316: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2317: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2318: }
2319: ##############################################
2320:
2321: =pod
2322:
2323: =back
2324:
2325: =cut
2326:
2327: ###############################################
2328:
2329:
2330: sub timehash {
2331: my @ltime=localtime(shift);
2332: return ( 'seconds' => $ltime[0],
2333: 'minutes' => $ltime[1],
2334: 'hours' => $ltime[2],
2335: 'day' => $ltime[3],
2336: 'month' => $ltime[4]+1,
2337: 'year' => $ltime[5]+1900,
2338: 'weekday' => $ltime[6],
2339: 'dayyear' => $ltime[7]+1,
2340: 'dlsav' => $ltime[8] );
2341: }
2342:
2343: sub maketime {
2344: my %th=@_;
2345: return POSIX::mktime(
2346: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2347: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2348: }
2349:
2350: #########################################
2351:
2352: sub findallcourses {
2353: my %courses=();
2354: my $now=time;
2355: foreach (keys %ENV) {
2356: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2357: my ($starttime,$endtime)=$ENV{$_};
2358: my $active=1;
2359: if ($starttime) {
2360: if ($now<$starttime) { $active=0; }
2361: }
2362: if ($endtime) {
2363: if ($now>$endtime) { $active=0; }
2364: }
2365: if ($active) { $courses{$1.'_'.$2}=1; }
2366: }
2367: }
2368: return keys %courses;
2369: }
2370:
2371: ###############################################
2372: ###############################################
2373:
2374: =pod
2375:
2376: =head1 Domain Template Functions
2377:
2378: =over 4
2379:
2380: =item * &determinedomain()
2381:
2382: Inputs: $domain (usually will be undef)
2383:
2384: Returns: Determines which domain should be used for designs
2385:
2386: =cut
2387:
2388: ###############################################
2389: sub determinedomain {
2390: my $domain=shift;
2391: if (! $domain) {
2392: # Determine domain if we have not been given one
2393: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2394: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2395: if ($ENV{'request.role.domain'}) {
2396: $domain=$ENV{'request.role.domain'};
2397: }
2398: }
2399: return $domain;
2400: }
2401: ###############################################
2402: =pod
2403:
2404: =item * &domainlogo()
2405:
2406: Inputs: $domain (usually will be undef)
2407:
2408: Returns: A link to a domain logo, if the domain logo exists.
2409: If the domain logo does not exist, a description of the domain.
2410:
2411: =cut
2412:
2413: ###############################################
2414: sub domainlogo {
2415: my $domain = &determinedomain(shift);
2416: # See if there is a logo
2417: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2418: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2419: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2420: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
2421: '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
2422: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2423: return $Apache::lonnet::domaindescription{$domain};
2424: } else {
2425: return '';
2426: }
2427: }
2428: ##############################################
2429:
2430: =pod
2431:
2432: =item * &designparm()
2433:
2434: Inputs: $which parameter; $domain (usually will be undef)
2435:
2436: Returns: value of designparamter $which
2437:
2438: =cut
2439:
2440: ##############################################
2441: sub designparm {
2442: my ($which,$domain)=@_;
2443: if ($ENV{'browser.blackwhite'} eq 'on') {
2444: if ($which=~/\.(font|alink|vlink|link)$/) {
2445: return '#000000';
2446: }
2447: if ($which=~/\.(pgbg|sidebg)$/) {
2448: return '#FFFFFF';
2449: }
2450: if ($which=~/\.tabbg$/) {
2451: return '#CCCCCC';
2452: }
2453: }
2454: if ($ENV{'environment.color.'.$which}) {
2455: return $ENV{'environment.color.'.$which};
2456: }
2457: $domain=&determinedomain($domain);
2458: if ($designhash{$domain.'.'.$which}) {
2459: return $designhash{$domain.'.'.$which};
2460: } else {
2461: return $designhash{'default.'.$which};
2462: }
2463: }
2464:
2465: ###############################################
2466: ###############################################
2467:
2468: =pod
2469:
2470: =back
2471:
2472: =head1 HTTP Helpers
2473:
2474: =over 4
2475:
2476: =item * &bodytag()
2477:
2478: Returns a uniform header for LON-CAPA web pages.
2479:
2480: Inputs:
2481:
2482: =over 4
2483:
2484: =item * $title, A title to be displayed on the page.
2485:
2486: =item * $function, the current role (can be undef).
2487:
2488: =item * $addentries, extra parameters for the <body> tag.
2489:
2490: =item * $bodyonly, if defined, only return the <body> tag.
2491:
2492: =item * $domain, if defined, force a given domain.
2493:
2494: =item * $forcereg, if page should register as content page (relevant for
2495: text interface only)
2496:
2497: =back
2498:
2499: Returns: A uniform header for LON-CAPA web pages.
2500: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2501: If $bodyonly is undef or zero, an html string containing a <body> tag and
2502: other decorations will be returned.
2503:
2504: =cut
2505:
2506: sub bodytag {
2507: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2508: $title=&mt($title);
2509: $function = &get_users_function() if (!$function);
2510: my $img=&designparm($function.'.img',$domain);
2511: my $pgbg=&designparm($function.'.pgbg',$domain);
2512: my $tabbg=&designparm($function.'.tabbg',$domain);
2513: my $font=&designparm($function.'.font',$domain);
2514: my $link=&designparm($function.'.link',$domain);
2515: my $alink=&designparm($function.'.alink',$domain);
2516: my $vlink=&designparm($function.'.vlink',$domain);
2517: my $sidebg=&designparm($function.'.sidebg',$domain);
2518: # Accessibility font enhance
2519: unless ($addentries) { $addentries=''; }
2520: my $addstyle='';
2521: if ($ENV{'browser.fontenhance'} eq 'on') {
2522: $addstyle=' font-size: x-large;';
2523: }
2524: # role and realm
2525: my ($role,$realm)
2526: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2527: # realm
2528: if ($ENV{'request.course.id'}) {
2529: $realm=
2530: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2531: }
2532: unless ($realm) { $realm=' '; }
2533: # Set messages
2534: my $messages=&domainlogo($domain);
2535: # Port for miniserver
2536: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2537: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2538: # construct main body tag
2539: my $bodytag = <<END;
2540: <style>
2541: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2542: a:focus { color: red; background: yellow }
2543: </style>
2544: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2545: style="margin-top: 0px;$addstyle" $addentries>
2546: END
2547: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2548: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2549: if ($bodyonly) {
2550: return $bodytag;
2551: } elsif ($ENV{'browser.interface'} eq 'textual') {
2552: # Accessibility
2553: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2554: $forcereg).
2555: '<h1>LON-CAPA: '.$title.'</h1>';
2556: } elsif ($ENV{'environment.remote'} eq 'off') {
2557: # No Remote
2558: my $roleinfo=(<<ENDROLE);
2559: <td bgcolor="$tabbg" align="right">
2560: <p>
2561: <font size="2" face="Arial, Helvetica, sans-serif">
2562: $ENV{'environment.firstname'}
2563: $ENV{'environment.middlename'}
2564: $ENV{'environment.lastname'}
2565: $ENV{'environment.generation'}
2566: </font>
2567: <br />
2568: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2569: <br />
2570: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2571: </p>
2572: </td>
2573: ENDROLE
2574: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2575: $forcereg).
2576: '<table bgcolor="'.$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>'.$title.
2577: '</b></font></td>'.$roleinfo.'</tr></table>';
2578: }
2579:
2580: #
2581: # Top frame rendering, Remote is up
2582: #
2583: return(<<ENDBODY);
2584: $bodytag
2585: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2586: <tr><td bgcolor="$sidebg">
2587: $upperleft</td>
2588: <td bgcolor="$sidebg" align="right">$messages </td>
2589: </tr>
2590: <tr>
2591: <td rowspan="3" bgcolor="$tabbg">
2592: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2593: <td bgcolor="$tabbg" align="right">
2594: <font size="2" face="Arial, Helvetica, sans-serif">
2595: $ENV{'environment.firstname'}
2596: $ENV{'environment.middlename'}
2597: $ENV{'environment.lastname'}
2598: $ENV{'environment.generation'}
2599: </font>
2600: </td>
2601: </tr>
2602: <tr><td bgcolor="$tabbg" align="right">
2603: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2604: </td></tr>
2605: <tr>
2606: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2607: </table><br />
2608: ENDBODY
2609: }
2610:
2611: ###############################################
2612:
2613: =pod
2614:
2615: =item get_users_function
2616:
2617: Used by &bodytag to determine the current users primary role.
2618: Returns either 'student','coordinator','admin', or 'author'.
2619:
2620: =cut
2621:
2622: ###############################################
2623: sub get_users_function {
2624: my $function = 'student';
2625: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2626: $function='coordinator';
2627: }
2628: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2629: $function='admin';
2630: }
2631: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2632: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2633: $function='author';
2634: }
2635: return $function;
2636: }
2637:
2638: ###############################################
2639:
2640: sub get_posted_cgi {
2641: my $r=shift;
2642:
2643: my $buffer;
2644:
2645: $r->read($buffer,$r->header_in('Content-length'),0);
2646: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2647: my @pairs=split(/&/,$buffer);
2648: my $pair;
2649: foreach $pair (@pairs) {
2650: my ($name,$value) = split(/=/,$pair);
2651: $value =~ tr/+/ /;
2652: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2653: $name =~ tr/+/ /;
2654: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2655: &add_to_env("form.$name",$value);
2656: }
2657: } else {
2658: my $contentsep=$1;
2659: my @lines = split (/\n/,$buffer);
2660: my $name='';
2661: my $value='';
2662: my $fname='';
2663: my $fmime='';
2664: my $i;
2665: for ($i=0;$i<=$#lines;$i++) {
2666: if ($lines[$i]=~/^$contentsep/) {
2667: if ($name) {
2668: chomp($value);
2669: if ($fname) {
2670: $ENV{"form.$name.filename"}=$fname;
2671: $ENV{"form.$name.mimetype"}=$fmime;
2672: } else {
2673: $value=~s/\s+$//s;
2674: }
2675: &add_to_env("form.$name",$value);
2676: }
2677: if ($i<$#lines) {
2678: $i++;
2679: $lines[$i]=~
2680: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2681: $name=$1;
2682: $value='';
2683: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2684: $fname=$1;
2685: if
2686: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2687: $fmime=$1;
2688: $i++;
2689: } else {
2690: $fmime='';
2691: }
2692: } else {
2693: $fname='';
2694: $fmime='';
2695: }
2696: $i++;
2697: }
2698: } else {
2699: $value.=$lines[$i]."\n";
2700: }
2701: }
2702: }
2703: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2704: $r->method_number(M_GET);
2705: $r->method('GET');
2706: $r->headers_in->unset('Content-length');
2707: }
2708:
2709: =pod
2710:
2711: =item * get_unprocessed_cgi($query,$possible_names)
2712:
2713: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2714: $query. The parameters listed in $possible_names (an array reference),
2715: will be set in $ENV{'form.name'} if they do not already exist.
2716:
2717: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2718: $possible_names is an ref to an array of form element names. As an example:
2719: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2720: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2721:
2722: =cut
2723:
2724: sub get_unprocessed_cgi {
2725: my ($query,$possible_names)= @_;
2726: # $Apache::lonxml::debug=1;
2727: foreach (split(/&/,$query)) {
2728: my ($name, $value) = split(/=/,$_);
2729: $name = &Apache::lonnet::unescape($name);
2730: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2731: $value =~ tr/+/ /;
2732: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2733: &Apache::lonxml::debug("Seting :$name: to :$value:");
2734: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2735: }
2736: }
2737: }
2738:
2739: =pod
2740:
2741: =item * cacheheader()
2742:
2743: returns cache-controlling header code
2744:
2745: =cut
2746:
2747: sub cacheheader {
2748: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2749: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2750: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2751: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2752: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2753: return $output;
2754: }
2755:
2756: =pod
2757:
2758: =item * no_cache($r)
2759:
2760: specifies header code to not have cache
2761:
2762: =cut
2763:
2764: sub no_cache {
2765: my ($r) = @_;
2766: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2767: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2768: $r->no_cache(1);
2769: $r->header_out("Pragma" => "no-cache");
2770: #$r->header_out("Expires" => $date);
2771: }
2772:
2773: sub content_type {
2774: my ($r,$type,$charset) = @_;
2775: unless ($charset) {
2776: $charset=&Apache::lonlocal::current_encoding;
2777: }
2778: if ($charset) { $type.='; charset='.$charset; }
2779: if ($r) {
2780: $r->content_type($type);
2781: } else {
2782: print("Content-type: $type\n\n");
2783: }
2784: }
2785:
2786: =pod
2787:
2788: =item * add_to_env($name,$value)
2789:
2790: adds $name to the %ENV hash with value
2791: $value, if $name already exists, the entry is converted to an array
2792: reference and $value is added to the array.
2793:
2794: =cut
2795:
2796: sub add_to_env {
2797: my ($name,$value)=@_;
2798: if (defined($ENV{$name})) {
2799: if (ref($ENV{$name})) {
2800: #already have multiple values
2801: push(@{ $ENV{$name} },$value);
2802: } else {
2803: #first time seeing multiple values, convert hash entry to an arrayref
2804: my $first=$ENV{$name};
2805: undef($ENV{$name});
2806: push(@{ $ENV{$name} },$first,$value);
2807: }
2808: } else {
2809: $ENV{$name}=$value;
2810: }
2811: }
2812:
2813: =pod
2814:
2815: =item * get_env_multiple($name)
2816:
2817: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2818: values may be defined and end up as an array ref.
2819:
2820: returns an array of values
2821:
2822: =cut
2823:
2824: sub get_env_multiple {
2825: my ($name) = @_;
2826: my @values;
2827: if (defined($ENV{$name})) {
2828: # exists is it an array
2829: if (ref($ENV{$name})) {
2830: @values=@{ $ENV{$name} };
2831: } else {
2832: $values[0]=$ENV{$name};
2833: }
2834: }
2835: return(@values);
2836: }
2837:
2838:
2839: =pod
2840:
2841: =back
2842:
2843: =head1 CSV Upload/Handling functions
2844:
2845: =over 4
2846:
2847: =item * upfile_store($r)
2848:
2849: Store uploaded file, $r should be the HTTP Request object,
2850: needs $ENV{'form.upfile'}
2851: returns $datatoken to be put into hidden field
2852:
2853: =cut
2854:
2855: sub upfile_store {
2856: my $r=shift;
2857: $ENV{'form.upfile'}=~s/\r/\n/gs;
2858: $ENV{'form.upfile'}=~s/\f/\n/gs;
2859: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2860: $ENV{'form.upfile'}=~s/\n+$//gs;
2861:
2862: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2863: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2864: {
2865: my $datafile = $r->dir_config('lonDaemons').
2866: '/tmp/'.$datatoken.'.tmp';
2867: if ( open(my $fh,">$datafile") ) {
2868: print $fh $ENV{'form.upfile'};
2869: close($fh);
2870: }
2871: }
2872: return $datatoken;
2873: }
2874:
2875: =pod
2876:
2877: =item * load_tmp_file($r)
2878:
2879: Load uploaded file from tmp, $r should be the HTTP Request object,
2880: needs $ENV{'form.datatoken'},
2881: sets $ENV{'form.upfile'} to the contents of the file
2882:
2883: =cut
2884:
2885: sub load_tmp_file {
2886: my $r=shift;
2887: my @studentdata=();
2888: {
2889: my $studentfile = $r->dir_config('lonDaemons').
2890: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2891: if ( open(my $fh,"<$studentfile") ) {
2892: @studentdata=<$fh>;
2893: close($fh);
2894: }
2895: }
2896: $ENV{'form.upfile'}=join('',@studentdata);
2897: }
2898:
2899: =pod
2900:
2901: =item * upfile_record_sep()
2902:
2903: Separate uploaded file into records
2904: returns array of records,
2905: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2906:
2907: =cut
2908:
2909: sub upfile_record_sep {
2910: if ($ENV{'form.upfiletype'} eq 'xml') {
2911: } else {
2912: return split(/\n/,$ENV{'form.upfile'});
2913: }
2914: }
2915:
2916: =pod
2917:
2918: =item * record_sep($record)
2919:
2920: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2921:
2922: =cut
2923:
2924: sub record_sep {
2925: my $record=shift;
2926: my %components=();
2927: if ($ENV{'form.upfiletype'} eq 'xml') {
2928: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2929: my $i=0;
2930: foreach (split(/\s+/,$record)) {
2931: my $field=$_;
2932: $field=~s/^(\"|\')//;
2933: $field=~s/(\"|\')$//;
2934: $components{$i}=$field;
2935: $i++;
2936: }
2937: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2938: my $i=0;
2939: foreach (split(/\t/,$record)) {
2940: my $field=$_;
2941: $field=~s/^(\"|\')//;
2942: $field=~s/(\"|\')$//;
2943: $components{$i}=$field;
2944: $i++;
2945: }
2946: } else {
2947: my @allfields=split(/\,/,$record);
2948: my $i=0;
2949: my $j;
2950: for ($j=0;$j<=$#allfields;$j++) {
2951: my $field=$allfields[$j];
2952: if ($field=~/^\s*(\"|\')/) {
2953: my $delimiter=$1;
2954: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2955: $j++;
2956: $field.=','.$allfields[$j];
2957: }
2958: $field=~s/^\s*$delimiter//;
2959: $field=~s/$delimiter\s*$//;
2960: }
2961: $components{$i}=$field;
2962: $i++;
2963: }
2964: }
2965: return %components;
2966: }
2967:
2968: ######################################################
2969: ######################################################
2970:
2971: =pod
2972:
2973: =item * upfile_select_html()
2974:
2975: Return HTML code to select a file from the users machine and specify
2976: the file type.
2977:
2978: =cut
2979:
2980: ######################################################
2981: ######################################################
2982: sub upfile_select_html {
2983: my %Types = (
2984: csv => &mt('CSV (comma separated values, spreadsheet)'),
2985: space => &mt('Space separated'),
2986: tab => &mt('Tabulator separated'),
2987: # xml => &mt('HTML/XML'),
2988: );
2989: my $Str = '<input type="file" name="upfile" size="50" />'.
2990: '<br />Type: <select name="upfiletype">';
2991: foreach my $type (sort(keys(%Types))) {
2992: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
2993: }
2994: $Str .= "</select>\n";
2995: return $Str;
2996: }
2997:
2998: ######################################################
2999: ######################################################
3000:
3001: =pod
3002:
3003: =item * csv_print_samples($r,$records)
3004:
3005: Prints a table of sample values from each column uploaded $r is an
3006: Apache Request ref, $records is an arrayref from
3007: &Apache::loncommon::upfile_record_sep
3008:
3009: =cut
3010:
3011: ######################################################
3012: ######################################################
3013: sub csv_print_samples {
3014: my ($r,$records) = @_;
3015: my (%sone,%stwo,%sthree);
3016: %sone=&record_sep($$records[0]);
3017: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3018: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3019: #
3020: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3021: foreach (sort({$a <=> $b} keys(%sone))) {
3022: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3023: $r->print('</tr>');
3024: foreach my $hash (\%sone,\%stwo,\%sthree) {
3025: $r->print('<tr>');
3026: foreach (sort({$a <=> $b} keys(%sone))) {
3027: $r->print('<td>');
3028: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3029: $r->print('</td>');
3030: }
3031: $r->print('</tr>');
3032: }
3033: $r->print('</tr></table><br />'."\n");
3034: }
3035:
3036: ######################################################
3037: ######################################################
3038:
3039: =pod
3040:
3041: =item * csv_print_select_table($r,$records,$d)
3042:
3043: Prints a table to create associations between values and table columns.
3044:
3045: $r is an Apache Request ref,
3046: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3047: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3048:
3049: =cut
3050:
3051: ######################################################
3052: ######################################################
3053: sub csv_print_select_table {
3054: my ($r,$records,$d) = @_;
3055: my $i=0;my %sone;
3056: %sone=&record_sep($$records[0]);
3057: $r->print(&mt('Associate columns with student attributes.')."\n".
3058: '<table border="2"><tr>'.
3059: '<th>'.&mt('Attribute').'</th>'.
3060: '<th>'.&mt('Column').'</th></tr>'."\n");
3061: foreach (@$d) {
3062: my ($value,$display,$defaultcol)=@{ $_ };
3063: $r->print('<tr><td>'.$display.'</td>');
3064:
3065: $r->print('<td><select name=f'.$i.
3066: ' onchange="javascript:flip(this.form,'.$i.');">');
3067: $r->print('<option value="none"></option>');
3068: foreach (sort({$a <=> $b} keys(%sone))) {
3069: $r->print('<option value="'.$_.'"'.
3070: ($_ eq $defaultcol ? ' selected ' : '').
3071: '>Column '.($_+1).'</option>');
3072: }
3073: $r->print('</select></td></tr>'."\n");
3074: $i++;
3075: }
3076: $i--;
3077: return $i;
3078: }
3079:
3080: ######################################################
3081: ######################################################
3082:
3083: =pod
3084:
3085: =item * csv_samples_select_table($r,$records,$d)
3086:
3087: Prints a table of sample values from the upload and can make associate samples to internal names.
3088:
3089: $r is an Apache Request ref,
3090: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3091: $d is an array of 2 element arrays (internal name, displayed name)
3092:
3093: =cut
3094:
3095: ######################################################
3096: ######################################################
3097: sub csv_samples_select_table {
3098: my ($r,$records,$d) = @_;
3099: my %sone; my %stwo; my %sthree;
3100: my $i=0;
3101: #
3102: $r->print('<table border=2><tr><th>'.
3103: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3104: %sone=&record_sep($$records[0]);
3105: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3106: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3107: #
3108: foreach (sort keys %sone) {
3109: $r->print('<tr><td><select name="f'.$i.'"'.
3110: ' onchange="javascript:flip(this.form,'.$i.');">');
3111: foreach (@$d) {
3112: my ($value,$display,$defaultcol)=@{ $_ };
3113: $r->print('<option value="'.$value.'"'.
3114: ($i eq $defaultcol ? ' selected ':'').'>'.
3115: $display.'</option>');
3116: }
3117: $r->print('</select></td><td>');
3118: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3119: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3120: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3121: $r->print('</td></tr>');
3122: $i++;
3123: }
3124: $i--;
3125: return($i);
3126: }
3127:
3128: ######################################################
3129: ######################################################
3130:
3131: =pod
3132:
3133: =item clean_excel_name($name)
3134:
3135: Returns a replacement for $name which does not contain any illegal characters.
3136:
3137: =cut
3138:
3139: ######################################################
3140: ######################################################
3141: sub clean_excel_name {
3142: my ($name) = @_;
3143: $name =~ s/[:\*\?\/\\]//g;
3144: if (length($name) > 31) {
3145: $name = substr($name,0,31);
3146: }
3147: return $name;
3148: }
3149:
3150: =pod
3151:
3152: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3153:
3154: Returns either 1 or undef
3155:
3156: 1 if the part is to be hidden, undef if it is to be shown
3157:
3158: Arguments are:
3159:
3160: $id the id of the part to be checked
3161: $symb, optional the symb of the resource to check
3162: $udom, optional the domain of the user to check for
3163: $uname, optional the username of the user to check for
3164:
3165: =cut
3166:
3167: sub check_if_partid_hidden {
3168: my ($id,$symb,$udom,$uname) = @_;
3169: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3170: $symb,$udom,$uname);
3171: my $truth=1;
3172: #if the string starts with !, then the list is the list to show not hide
3173: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3174: my @hiddenlist=split(/,/,$hiddenparts);
3175: foreach my $checkid (@hiddenlist) {
3176: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3177: }
3178: return !$truth;
3179: }
3180:
3181:
3182: ############################################################
3183: ############################################################
3184:
3185: =pod
3186:
3187: =back
3188:
3189: =head1 cgi-bin script and graphing routines
3190:
3191: =over 4
3192:
3193: =item get_cgi_id
3194:
3195: Inputs: none
3196:
3197: Returns an id which can be used to pass environment variables
3198: to various cgi-bin scripts. These environment variables will
3199: be removed from the users environment after a given time by
3200: the routine &Apache::lonnet::transfer_profile_to_env.
3201:
3202: =cut
3203:
3204: ############################################################
3205: ############################################################
3206: my $uniq=0;
3207: sub get_cgi_id {
3208: $uniq=($uniq+1)%100000;
3209: return (time.'_'.$uniq);
3210: }
3211:
3212: ############################################################
3213: ############################################################
3214:
3215: =pod
3216:
3217: =item DrawBarGraph
3218:
3219: Facilitates the plotting of data in a (stacked) bar graph.
3220: Puts plot definition data into the users environment in order for
3221: graph.png to plot it. Returns an <img> tag for the plot.
3222: The bars on the plot are labeled '1','2',...,'n'.
3223:
3224: Inputs:
3225:
3226: =over 4
3227:
3228: =item $Title: string, the title of the plot
3229:
3230: =item $xlabel: string, text describing the X-axis of the plot
3231:
3232: =item $ylabel: string, text describing the Y-axis of the plot
3233:
3234: =item $Max: scalar, the maximum Y value to use in the plot
3235: If $Max is < any data point, the graph will not be rendered.
3236:
3237: =item $colors: array ref holding the colors to be used for the data sets when
3238: they are plotted. If undefined, default values will be used.
3239:
3240: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3241:
3242: =item @Values: An array of array references. Each array reference holds data
3243: to be plotted in a stacked bar chart.
3244:
3245: =back
3246:
3247: Returns:
3248:
3249: An <img> tag which references graph.png and the appropriate identifying
3250: information for the plot.
3251:
3252: =cut
3253:
3254: ############################################################
3255: ############################################################
3256: sub DrawBarGraph {
3257: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3258: #
3259: if (! defined($colors)) {
3260: $colors = ['#33ff00',
3261: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3262: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3263: ];
3264: }
3265: #
3266: my $identifier = &get_cgi_id();
3267: my $id = 'cgi.'.$identifier;
3268: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3269: return '';
3270: }
3271: my $NumBars = scalar(@{$Values[0]});
3272: my %ValuesHash;
3273: my $NumSets=1;
3274: foreach my $array (@Values) {
3275: next if (! ref($array));
3276: $ValuesHash{$id.'.data.'.$NumSets++} =
3277: join(',',@$array);
3278: }
3279: #
3280: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3281: if ($NumBars < 10) {
3282: $width = 120+$NumBars*15;
3283: $xskip = 1;
3284: $bar_width = 15;
3285: } elsif ($NumBars <= 25) {
3286: $width = 120+$NumBars*11;
3287: $xskip = 5;
3288: $bar_width = 8;
3289: } elsif ($NumBars <= 50) {
3290: $width = 120+$NumBars*8;
3291: $xskip = 5;
3292: $bar_width = 4;
3293: } else {
3294: $width = 120+$NumBars*8;
3295: $xskip = 5;
3296: $bar_width = 4;
3297: }
3298: #
3299: my @Labels;
3300: if (defined($labels)) {
3301: @Labels = @$labels;
3302: } else {
3303: for (my $i=0;$i<@{$Values[0]};$i++) {
3304: push (@Labels,$i+1);
3305: }
3306: }
3307: #
3308: $Max = 1 if ($Max < 1);
3309: if ( int($Max) < $Max ) {
3310: $Max++;
3311: $Max = int($Max);
3312: }
3313: $Title = '' if (! defined($Title));
3314: $xlabel = '' if (! defined($xlabel));
3315: $ylabel = '' if (! defined($ylabel));
3316: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3317: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3318: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3319: $ValuesHash{$id.'.y_max_value'} = $Max;
3320: $ValuesHash{$id.'.NumBars'} = $NumBars;
3321: $ValuesHash{$id.'.NumSets'} = $NumSets;
3322: $ValuesHash{$id.'.PlotType'} = 'bar';
3323: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3324: $ValuesHash{$id.'.height'} = $height;
3325: $ValuesHash{$id.'.width'} = $width;
3326: $ValuesHash{$id.'.xskip'} = $xskip;
3327: $ValuesHash{$id.'.bar_width'} = $bar_width;
3328: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3329: #
3330: &Apache::lonnet::appenv(%ValuesHash);
3331: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3332: }
3333:
3334: ############################################################
3335: ############################################################
3336:
3337: =pod
3338:
3339: =item DrawXYGraph
3340:
3341: Facilitates the plotting of data in an XY graph.
3342: Puts plot definition data into the users environment in order for
3343: graph.png to plot it. Returns an <img> tag for the plot.
3344:
3345: Inputs:
3346:
3347: =over 4
3348:
3349: =item $Title: string, the title of the plot
3350:
3351: =item $xlabel: string, text describing the X-axis of the plot
3352:
3353: =item $ylabel: string, text describing the Y-axis of the plot
3354:
3355: =item $Max: scalar, the maximum Y value to use in the plot
3356: If $Max is < any data point, the graph will not be rendered.
3357:
3358: =item $colors: Array ref containing the hex color codes for the data to be
3359: plotted in. If undefined, default values will be used.
3360:
3361: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3362:
3363: =item $Ydata: Array ref containing Array refs.
3364: Each of the contained arrays will be plotted as a separate curve.
3365:
3366: =item %Values: hash indicating or overriding any default values which are
3367: passed to graph.png.
3368: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3369:
3370: =back
3371:
3372: Returns:
3373:
3374: An <img> tag which references graph.png and the appropriate identifying
3375: information for the plot.
3376:
3377: =cut
3378:
3379: ############################################################
3380: ############################################################
3381: sub DrawXYGraph {
3382: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3383: #
3384: # Create the identifier for the graph
3385: my $identifier = &get_cgi_id();
3386: my $id = 'cgi.'.$identifier;
3387: #
3388: $Title = '' if (! defined($Title));
3389: $xlabel = '' if (! defined($xlabel));
3390: $ylabel = '' if (! defined($ylabel));
3391: my %ValuesHash =
3392: (
3393: $id.'.title' => &Apache::lonnet::escape($Title),
3394: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3395: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3396: $id.'.y_max_value'=> $Max,
3397: $id.'.labels' => join(',',@$Xlabels),
3398: $id.'.PlotType' => 'XY',
3399: );
3400: #
3401: if (defined($colors) && ref($colors) eq 'ARRAY') {
3402: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3403: }
3404: #
3405: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3406: return '';
3407: }
3408: my $NumSets=1;
3409: foreach my $array (@{$Ydata}){
3410: next if (! ref($array));
3411: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3412: }
3413: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3414: #
3415: # Deal with other parameters
3416: while (my ($key,$value) = each(%Values)) {
3417: $ValuesHash{$id.'.'.$key} = $value;
3418: }
3419: #
3420: &Apache::lonnet::appenv(%ValuesHash);
3421: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3422: }
3423:
3424: ############################################################
3425: ############################################################
3426:
3427: =pod
3428:
3429: =item DrawXYYGraph
3430:
3431: Facilitates the plotting of data in an XY graph with two Y axes.
3432: Puts plot definition data into the users environment in order for
3433: graph.png to plot it. Returns an <img> tag for the plot.
3434:
3435: Inputs:
3436:
3437: =over 4
3438:
3439: =item $Title: string, the title of the plot
3440:
3441: =item $xlabel: string, text describing the X-axis of the plot
3442:
3443: =item $ylabel: string, text describing the Y-axis of the plot
3444:
3445: =item $colors: Array ref containing the hex color codes for the data to be
3446: plotted in. If undefined, default values will be used.
3447:
3448: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3449:
3450: =item $Ydata1: The first data set
3451:
3452: =item $Min1: The minimum value of the left Y-axis
3453:
3454: =item $Max1: The maximum value of the left Y-axis
3455:
3456: =item $Ydata2: The second data set
3457:
3458: =item $Min2: The minimum value of the right Y-axis
3459:
3460: =item $Max2: The maximum value of the left Y-axis
3461:
3462: =item %Values: hash indicating or overriding any default values which are
3463: passed to graph.png.
3464: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3465:
3466: =back
3467:
3468: Returns:
3469:
3470: An <img> tag which references graph.png and the appropriate identifying
3471: information for the plot.
3472:
3473: =cut
3474:
3475: ############################################################
3476: ############################################################
3477: sub DrawXYYGraph {
3478: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3479: $Ydata2,$Min2,$Max2,%Values)=@_;
3480: #
3481: # Create the identifier for the graph
3482: my $identifier = &get_cgi_id();
3483: my $id = 'cgi.'.$identifier;
3484: #
3485: $Title = '' if (! defined($Title));
3486: $xlabel = '' if (! defined($xlabel));
3487: $ylabel = '' if (! defined($ylabel));
3488: my %ValuesHash =
3489: (
3490: $id.'.title' => &Apache::lonnet::escape($Title),
3491: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3492: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3493: $id.'.labels' => join(',',@$Xlabels),
3494: $id.'.PlotType' => 'XY',
3495: $id.'.NumSets' => 2,
3496: $id.'.two_axes' => 1,
3497: $id.'.y1_max_value' => $Max1,
3498: $id.'.y1_min_value' => $Min1,
3499: $id.'.y2_max_value' => $Max2,
3500: $id.'.y2_min_value' => $Min2,
3501: );
3502: #
3503: if (defined($colors) && ref($colors) eq 'ARRAY') {
3504: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3505: }
3506: #
3507: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3508: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3509: return '';
3510: }
3511: my $NumSets=1;
3512: foreach my $array ($Ydata1,$Ydata2){
3513: next if (! ref($array));
3514: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3515: }
3516: #
3517: # Deal with other parameters
3518: while (my ($key,$value) = each(%Values)) {
3519: $ValuesHash{$id.'.'.$key} = $value;
3520: }
3521: #
3522: &Apache::lonnet::appenv(%ValuesHash);
3523: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3524: }
3525:
3526: ############################################################
3527: ############################################################
3528:
3529: =pod
3530:
3531: =back
3532:
3533: =head1 Statistics helper routines?
3534:
3535: Bad place for them but what the hell.
3536:
3537: =over 4
3538:
3539: =item &chartlink
3540:
3541: Returns a link to the chart for a specific student.
3542:
3543: Inputs:
3544:
3545: =over 4
3546:
3547: =item $linktext: The text of the link
3548:
3549: =item $sname: The students username
3550:
3551: =item $sdomain: The students domain
3552:
3553: =back
3554:
3555: =back
3556:
3557: =cut
3558:
3559: ############################################################
3560: ############################################################
3561: sub chartlink {
3562: my ($linktext, $sname, $sdomain) = @_;
3563: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3564: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3565: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3566: '">'.$linktext.'</a>';
3567: }
3568:
3569: #######################################################
3570: #######################################################
3571:
3572: =pod
3573:
3574: =head1 Course Environment Routines
3575:
3576: =over 4
3577:
3578: =item &restore_course_settings
3579:
3580: =item &store_course_settings
3581:
3582: Restores/Store indicated form parameters from the course environment.
3583: Will not overwrite existing values of the form parameters.
3584:
3585: Inputs:
3586: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3587:
3588: a hash ref describing the data to be stored. For example:
3589:
3590: %Save_Parameters = ('Status' => 'scalar',
3591: 'chartoutputmode' => 'scalar',
3592: 'chartoutputdata' => 'scalar',
3593: 'Section' => 'array',
3594: 'StudentData' => 'array',
3595: 'Maps' => 'array');
3596:
3597: Returns: both routines return nothing
3598:
3599: =cut
3600:
3601: #######################################################
3602: #######################################################
3603: sub store_course_settings {
3604: # save to the environment
3605: # appenv the same items, just to be safe
3606: my $courseid = $ENV{'request.course.id'};
3607: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3608: my ($prefix,$Settings) = @_;
3609: my %SaveHash;
3610: my %AppHash;
3611: while (my ($setting,$type) = each(%$Settings)) {
3612: my $basename = 'internal.'.$prefix.'.'.$setting;
3613: my $envname = 'course.'.$courseid.'.'.$basename;
3614: if (exists($ENV{'form.'.$setting})) {
3615: # Save this value away
3616: if ($type eq 'scalar' &&
3617: (! exists($ENV{$envname}) ||
3618: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3619: $SaveHash{$basename} = $ENV{'form.'.$setting};
3620: $AppHash{$envname} = $ENV{'form.'.$setting};
3621: } elsif ($type eq 'array') {
3622: my $stored_form;
3623: if (ref($ENV{'form.'.$setting})) {
3624: $stored_form = join(',',
3625: map {
3626: &Apache::lonnet::escape($_);
3627: } sort(@{$ENV{'form.'.$setting}}));
3628: } else {
3629: $stored_form =
3630: &Apache::lonnet::escape($ENV{'form.'.$setting});
3631: }
3632: # Determine if the array contents are the same.
3633: if ($stored_form ne $ENV{$envname}) {
3634: $SaveHash{$basename} = $stored_form;
3635: $AppHash{$envname} = $stored_form;
3636: }
3637: }
3638: }
3639: }
3640: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3641: $coursedom,
3642: $ENV{'course.'.$courseid.'.num'});
3643: if ($put_result !~ /^(ok|delayed)/) {
3644: &Apache::lonnet::logthis('unable to save form parameters, '.
3645: 'got error:'.$put_result);
3646: }
3647: # Make sure these settings stick around in this session, too
3648: &Apache::lonnet::appenv(%AppHash);
3649: return;
3650: }
3651:
3652: sub restore_course_settings {
3653: my $courseid = $ENV{'request.course.id'};
3654: my ($prefix,$Settings) = @_;
3655: while (my ($setting,$type) = each(%$Settings)) {
3656: next if (exists($ENV{'form.'.$setting}));
3657: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3658: '.'.$setting;
3659: if (exists($ENV{$envname})) {
3660: if ($type eq 'scalar') {
3661: $ENV{'form.'.$setting} = $ENV{$envname};
3662: } elsif ($type eq 'array') {
3663: $ENV{'form.'.$setting} = [
3664: map {
3665: &Apache::lonnet::unescape($_);
3666: } split(',',$ENV{$envname})
3667: ];
3668: }
3669: }
3670: }
3671: }
3672:
3673: ############################################################
3674: ############################################################
3675:
3676: sub propath {
3677: my ($udom,$uname)=@_;
3678: $udom=~s/\W//g;
3679: $uname=~s/\W//g;
3680: my $subdir=$uname.'__';
3681: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3682: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3683: return $proname;
3684: }
3685:
3686: sub icon {
3687: my ($file)=@_;
3688: my $curfext = (split(/\./,$file))[-1];
3689: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3690: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3691: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3692: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3693: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3694: $curfext.".gif") {
3695: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3696: $curfext.".gif";
3697: }
3698: }
3699: return $iconname;
3700: }
3701:
3702: sub connection_aborted {
3703: my ($r)=@_;
3704: $r->print(" ");$r->rflush();
3705: my $c = $r->connection;
3706: &Apache::lonnet::logthis("checking :".$c->aborted());
3707: return $c->aborted();
3708: }
3709:
3710: =pod
3711:
3712: =back
3713:
3714: =cut
3715:
3716: 1;
3717: __END__;
3718:
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