1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.218 2004/10/12 22:37:37 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=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: } else {
269: url += 'only=&';
270: }
271: if (omit != null) {
272: url += 'omit=' + omit + '&';
273: } else {
274: url += 'omit=&';
275: }
276: if (titleelement != null) {
277: url += 'titleelement=' + titleelement + '&';
278: } else {
279: url += 'titleelement=&';
280: }
281: url += 'element=' + elementname + '';
282: var title = 'Browser';
283: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
284: options += ',width=700,height=600';
285: editbrowser = open(url,title,options,'1');
286: editbrowser.focus();
287: }
288: var editsearcher;
289: function opensearcher(formname,elementname,titleelement) {
290: var url = '/adm/searchcat?';
291: if (editsearcher == null) {
292: url += 'launch=1&';
293: }
294: url += 'catalogmode=interactive&';
295: url += 'mode=$mode&';
296: url += 'form=' + formname + '&';
297: if (titleelement != null) {
298: url += 'titleelement=' + titleelement + '&';
299: } else {
300: url += 'titleelement=&';
301: }
302: url += 'element=' + elementname + '';
303: var title = 'Search';
304: var options = 'scrollbars=1,resizable=1,menubar=0';
305: options += ',width=700,height=600';
306: editsearcher = open(url,title,options,'1');
307: editsearcher.focus();
308: }
309: END
310: }
311:
312: sub lastresurl {
313: if ($ENV{'environment.lastresurl'}) {
314: return $ENV{'environment.lastresurl'}
315: } else {
316: return '/res';
317: }
318: }
319:
320: sub storeresurl {
321: my $resurl=&Apache::lonnet::clutter(shift);
322: unless ($resurl=~/^\/res/) { return 0; }
323: $resurl=~s/\/$//;
324: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
325: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
326: return 1;
327: }
328:
329: sub studentbrowser_javascript {
330: unless (
331: (($ENV{'request.course.id'}) &&
332: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
333: || ($ENV{'request.role'}=~/^(au|dc|su)/)
334: ) { return ''; }
335: return (<<'ENDSTDBRW');
336: <script type="text/javascript" language="Javascript" >
337: var stdeditbrowser;
338: function openstdbrowser(formname,uname,udom,roleflag) {
339: var url = '/adm/pickstudent?';
340: var filter;
341: eval('filter=document.'+formname+'.'+uname+'.value;');
342: if (filter != null) {
343: if (filter != '') {
344: url += 'filter='+filter+'&';
345: }
346: }
347: url += 'form=' + formname + '&unameelement='+uname+
348: '&udomelement='+udom;
349: if (roleflag) { url+="&roles=1"; }
350: var title = 'Student_Browser';
351: var options = 'scrollbars=1,resizable=1,menubar=0';
352: options += ',width=700,height=600';
353: stdeditbrowser = open(url,title,options,'1');
354: stdeditbrowser.focus();
355: }
356: </script>
357: ENDSTDBRW
358: }
359:
360: sub selectstudent_link {
361: my ($form,$unameele,$udomele)=@_;
362: if ($ENV{'request.course.id'}) {
363: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
364: return '';
365: }
366: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
367: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
368: }
369: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
370: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
371: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
372: }
373: return '';
374: }
375:
376: sub coursebrowser_javascript {
377: my ($domainfilter)=@_;
378: return (<<ENDSTDBRW);
379: <script type="text/javascript" language="Javascript" >
380: var stdeditbrowser;
381: function opencrsbrowser(formname,uname,udom,desc) {
382: var url = '/adm/pickcourse?';
383: var filter;
384: if (filter != null) {
385: if (filter != '') {
386: url += 'filter='+filter+'&';
387: }
388: }
389: var domainfilter='$domainfilter';
390: if (domainfilter != null) {
391: if (domainfilter != '') {
392: url += 'domainfilter='+domainfilter+'&';
393: }
394: }
395: url += 'form=' + formname + '&cnumelement='+uname+
396: '&cdomelement='+udom+
397: '&cnameelement='+desc;
398: var title = 'Course_Browser';
399: var options = 'scrollbars=1,resizable=1,menubar=0';
400: options += ',width=700,height=600';
401: stdeditbrowser = open(url,title,options,'1');
402: stdeditbrowser.focus();
403: }
404: </script>
405: ENDSTDBRW
406: }
407:
408: sub selectcourse_link {
409: my ($form,$unameele,$udomele,$desc)=@_;
410: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
411: '","'.$udomele.'","'.$desc.'");'."'>".&mt('Select Course')."</a>";
412: }
413:
414: =pod
415:
416: =item * linked_select_forms(...)
417:
418: linked_select_forms returns a string containing a <script></script> block
419: and html for two <select> menus. The select menus will be linked in that
420: changing the value of the first menu will result in new values being placed
421: in the second menu. The values in the select menu will appear in alphabetical
422: order.
423:
424: linked_select_forms takes the following ordered inputs:
425:
426: =over 4
427:
428: =item * $formname, the name of the <form> tag
429:
430: =item * $middletext, the text which appears between the <select> tags
431:
432: =item * $firstdefault, the default value for the first menu
433:
434: =item * $firstselectname, the name of the first <select> tag
435:
436: =item * $secondselectname, the name of the second <select> tag
437:
438: =item * $hashref, a reference to a hash containing the data for the menus.
439:
440: =back
441:
442: Below is an example of such a hash. Only the 'text', 'default', and
443: 'select2' keys must appear as stated. keys(%menu) are the possible
444: values for the first select menu. The text that coincides with the
445: first menu value is given in $menu{$choice1}->{'text'}. The values
446: and text for the second menu are given in the hash pointed to by
447: $menu{$choice1}->{'select2'}.
448:
449: my %menu = ( A1 => { text =>"Choice A1" ,
450: default => "B3",
451: select2 => {
452: B1 => "Choice B1",
453: B2 => "Choice B2",
454: B3 => "Choice B3",
455: B4 => "Choice B4"
456: }
457: },
458: A2 => { text =>"Choice A2" ,
459: default => "C2",
460: select2 => {
461: C1 => "Choice C1",
462: C2 => "Choice C2",
463: C3 => "Choice C3"
464: }
465: },
466: A3 => { text =>"Choice A3" ,
467: default => "D6",
468: select2 => {
469: D1 => "Choice D1",
470: D2 => "Choice D2",
471: D3 => "Choice D3",
472: D4 => "Choice D4",
473: D5 => "Choice D5",
474: D6 => "Choice D6",
475: D7 => "Choice D7"
476: }
477: }
478: );
479:
480: =cut
481:
482: sub linked_select_forms {
483: my ($formname,
484: $middletext,
485: $firstdefault,
486: $firstselectname,
487: $secondselectname,
488: $hashref
489: ) = @_;
490: my $second = "document.$formname.$secondselectname";
491: my $first = "document.$formname.$firstselectname";
492: # output the javascript to do the changing
493: my $result = '';
494: $result.="<script>\n";
495: $result.="var select2data = new Object();\n";
496: $" = '","';
497: my $debug = '';
498: foreach my $s1 (sort(keys(%$hashref))) {
499: $result.="select2data.d_$s1 = new Object();\n";
500: $result.="select2data.d_$s1.def = new String('".
501: $hashref->{$s1}->{'default'}."');\n";
502: $result.="select2data.d_$s1.values = new Array(";
503: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
504: $result.="\"@s2values\");\n";
505: $result.="select2data.d_$s1.texts = new Array(";
506: my @s2texts;
507: foreach my $value (@s2values) {
508: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
509: }
510: $result.="\"@s2texts\");\n";
511: }
512: $"=' ';
513: $result.= <<"END";
514:
515: function select1_changed() {
516: // Determine new choice
517: var newvalue = "d_" + $first.value;
518: // update select2
519: var values = select2data[newvalue].values;
520: var texts = select2data[newvalue].texts;
521: var select2def = select2data[newvalue].def;
522: var i;
523: // out with the old
524: for (i = 0; i < $second.options.length; i++) {
525: $second.options[i] = null;
526: }
527: // in with the nuclear
528: for (i=0;i<values.length; i++) {
529: $second.options[i] = new Option(values[i]);
530: $second.options[i].value = values[i];
531: $second.options[i].text = texts[i];
532: if (values[i] == select2def) {
533: $second.options[i].selected = true;
534: }
535: }
536: }
537: </script>
538: END
539: # output the initial values for the selection lists
540: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
541: foreach my $value (sort(keys(%$hashref))) {
542: $result.=" <option value=\"$value\" ";
543: $result.=" selected=\"true\" " if ($value eq $firstdefault);
544: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
545: }
546: $result .= "</select>\n";
547: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
548: $result .= $middletext;
549: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
550: my $seconddefault = $hashref->{$firstdefault}->{'default'};
551: foreach my $value (sort(keys(%select2))) {
552: $result.=" <option value=\"$value\" ";
553: $result.=" selected=\"true\" " if ($value eq $seconddefault);
554: $result.=">".&mt($select2{$value})."</option>\n";
555: }
556: $result .= "</select>\n";
557: # return $debug;
558: return $result;
559: } # end of sub linked_select_forms {
560:
561: =pod
562:
563: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
564:
565: Returns a string corresponding to an HTML link to the given help
566: $topic, where $topic corresponds to the name of a .tex file in
567: /home/httpd/html/adm/help/tex, with underscores replaced by
568: spaces.
569:
570: $text will optionally be linked to the same topic, allowing you to
571: link text in addition to the graphic. If you do not want to link
572: text, but wish to specify one of the later parameters, pass an
573: empty string.
574:
575: $stayOnPage is a value that will be interpreted as a boolean. If true,
576: the link will not open a new window. If false, the link will open
577: a new window using Javascript. (Default is false.)
578:
579: $width and $height are optional numerical parameters that will
580: override the width and height of the popped up window, which may
581: be useful for certain help topics with big pictures included.
582:
583: =cut
584:
585: sub help_open_topic {
586: my ($topic, $text, $stayOnPage, $width, $height) = @_;
587: $text = "" if (not defined $text);
588: $stayOnPage = 0 if (not defined $stayOnPage);
589: if ($ENV{'browser.interface'} eq 'textual' ||
590: $ENV{'environment.remote'} eq 'off' ) {
591: $stayOnPage=1;
592: }
593: $width = 350 if (not defined $width);
594: $height = 400 if (not defined $height);
595: my $filename = $topic;
596: $filename =~ s/ /_/g;
597:
598: my $template = "";
599: my $link;
600:
601: $topic=~s/\W/\_/g;
602:
603: if (!$stayOnPage)
604: {
605: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
606: }
607: else
608: {
609: $link = "/adm/help/${filename}.hlp";
610: }
611:
612: # Add the text
613: if ($text ne "")
614: {
615: $template .=
616: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
617: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
618: }
619:
620: # Add the graphic
621: my $title = &mt('Online Help');
622: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
623: $template .= <<"ENDTEMPLATE";
624: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
625: ENDTEMPLATE
626: if ($text ne '') { $template.='</td></tr></table>' };
627: return $template;
628:
629: }
630:
631: # This is a quicky function for Latex cheatsheet editing, since it
632: # appears in at least four places
633: sub helpLatexCheatsheet {
634: my $other = shift;
635: my $addOther = '';
636: if ($other) {
637: $addOther = Apache::loncommon::help_open_topic($other, shift,
638: undef, undef, 600) .
639: '</td><td>';
640: }
641: return '<table><tr><td>'.
642: $addOther .
643: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
644: undef,undef,600)
645: .'</td><td>'.
646: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
647: undef,undef,600)
648: .'</td></tr></table>';
649: }
650:
651: sub help_open_menu {
652: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
653: $text = "" if (not defined $text);
654: $stayOnPage = 0 if (not defined $stayOnPage);
655: if ($ENV{'browser.interface'} eq 'textual' ||
656: $ENV{'environment.remote'} eq 'off' ) {
657: $stayOnPage=1;
658: }
659: $width = 620 if (not defined $width);
660: $height = 600 if (not defined $height);
661: my $link='';
662: my $title = &mt('Get help');
663: my $origurl = $ENV{'REQUEST_URI'};
664: my $timestamp = time;
665: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
666: $$_ = &Apache::lonnet::escape($$_);
667: }
668:
669: if (!$stayOnPage) {
670: $link = "javascript:helpMenu('open')";
671: } else {
672: $link = "javascript:helpMenu('display')";
673: }
674: 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";
675: 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";
676: my $template;
677: if ($text ne "") {
678: $template .=
679: "<table bgcolor='#773311' cellspacing='1' cellpadding='1' border='0'><tr>".
680: "<td bgcolor='#886622'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
681: }
682: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
683: $template .= <<"ENDTEMPLATE";
684: <script>
685: function helpMenu(caller) {
686: if (caller == 'open') {
687: newWindow = window.open("","helpmenu","HEIGHT=$height,WIDTH=$width,resize=yes,scrollbars=yes" )
688: caller = newWindow.document
689: } else {
690: caller = this.document
691: }
692: caller.write("<html><head><title>LON-CAPA Help Menu</title><meta http-equiv='pragma' content='no-cache'></head>")
693: caller.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
694: caller.write("</html>")
695: caller.close()
696: if (caller == newWindow.document) {
697: caller.focus()
698: }
699: }
700: </script>
701: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
702: ENDTEMPLATE
703: if ($component_help) {
704: if (!$text) {
705: $template=&help_open_topic($component_help,undef,$stayOnPage,
706: $width,$height).' '.$template;
707: } else {
708: my $help_text;
709: $help_text=&Apache::lonnet::unescape($topic);
710: $template='<table><tr><td>'.
711: &help_open_topic($component_help,$help_text,$stayOnPage,
712: $width,$height).'</td><td>'.$template.
713: '</td></tr></table>';
714: }
715: }
716: if ($text ne '') { $template.='</td></tr></table>' };
717: return $template;
718: }
719:
720: sub help_open_bug {
721: my ($topic, $text, $stayOnPage, $width, $height) = @_;
722: unless ($ENV{'user.adv'}) { return ''; }
723: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
724: $text = "" if (not defined $text);
725: $stayOnPage = 0 if (not defined $stayOnPage);
726: if ($ENV{'browser.interface'} eq 'textual' ||
727: $ENV{'environment.remote'} eq 'off' ) {
728: $stayOnPage=1;
729: }
730: $width = 600 if (not defined $width);
731: $height = 600 if (not defined $height);
732:
733: $topic=~s/\W+/\+/g;
734: my $link='';
735: my $template='';
736: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
737: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
738: if (!$stayOnPage)
739: {
740: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
741: }
742: else
743: {
744: $link = $url;
745: }
746: # Add the text
747: if ($text ne "")
748: {
749: $template .=
750: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
751: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
752: }
753:
754: # Add the graphic
755: my $title = &mt('Report a Bug');
756: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
757: $template .= <<"ENDTEMPLATE";
758: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
759: ENDTEMPLATE
760: if ($text ne '') { $template.='</td></tr></table>' };
761: return $template;
762:
763: }
764:
765: sub help_open_faq {
766: my ($topic, $text, $stayOnPage, $width, $height) = @_;
767: unless ($ENV{'user.adv'}) { return ''; }
768: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
769: $text = "" if (not defined $text);
770: $stayOnPage = 0 if (not defined $stayOnPage);
771: if ($ENV{'browser.interface'} eq 'textual' ||
772: $ENV{'environment.remote'} eq 'off' ) {
773: $stayOnPage=1;
774: }
775: $width = 350 if (not defined $width);
776: $height = 400 if (not defined $height);
777:
778: $topic=~s/\W+/\+/g;
779: my $link='';
780: my $template='';
781: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
782: if (!$stayOnPage)
783: {
784: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
785: }
786: else
787: {
788: $link = $url;
789: }
790:
791: # Add the text
792: if ($text ne "")
793: {
794: $template .=
795: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
796: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
797: }
798:
799: # Add the graphic
800: my $title = &mt('View the FAQ');
801: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
802: $template .= <<"ENDTEMPLATE";
803: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
804: ENDTEMPLATE
805: if ($text ne '') { $template.='</td></tr></table>' };
806: return $template;
807:
808: }
809:
810: ###############################################################
811: ###############################################################
812:
813: =pod
814:
815: =item * csv_translate($text)
816:
817: Translate $text to allow it to be output as a 'comma separated values'
818: format.
819:
820: =cut
821:
822: ###############################################################
823: ###############################################################
824: sub csv_translate {
825: my $text = shift;
826: $text =~ s/\"/\"\"/g;
827: $text =~ s/\n/ /g;
828: return $text;
829: }
830:
831:
832: ###############################################################
833: ###############################################################
834:
835: =pod
836:
837: =item * define_excel_formats
838:
839: Define some commonly used Excel cell formats.
840:
841: Currently supported formats:
842:
843: =over 4
844:
845: =item header
846:
847: =item bold
848:
849: =item h1
850:
851: =item h2
852:
853: =item h3
854:
855: =item date
856:
857: =back
858:
859: Inputs: $workbook
860:
861: Returns: $format, a hash reference.
862:
863: =cut
864:
865: ###############################################################
866: ###############################################################
867: sub define_excel_formats {
868: my ($workbook) = @_;
869: my $format;
870: $format->{'header'} = $workbook->add_format(bold => 1,
871: bottom => 1,
872: align => 'center');
873: $format->{'bold'} = $workbook->add_format(bold=>1);
874: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
875: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
876: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
877: $format->{'date'} = $workbook->add_format(num_format=>
878: 'mm/dd/yyyy hh:mm:ss');
879: return $format;
880: }
881:
882: ###############################################################
883: ###############################################################
884:
885: =pod
886:
887: =item * change_content_javascript():
888:
889: This and the next function allow you to create small sections of an
890: otherwise static HTML page that you can update on the fly with
891: Javascript, even in Netscape 4.
892:
893: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
894: must be written to the HTML page once. It will prove the Javascript
895: function "change(name, content)". Calling the change function with the
896: name of the section
897: you want to update, matching the name passed to C<changable_area>, and
898: the new content you want to put in there, will put the content into
899: that area.
900:
901: B<Note>: Netscape 4 only reserves enough space for the changable area
902: to contain room for the original contents. You need to "make space"
903: for whatever changes you wish to make, and be B<sure> to check your
904: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
905: it's adequate for updating a one-line status display, but little more.
906: This script will set the space to 100% width, so you only need to
907: worry about height in Netscape 4.
908:
909: Modern browsers are much less limiting, and if you can commit to the
910: user not using Netscape 4, this feature may be used freely with
911: pretty much any HTML.
912:
913: =cut
914:
915: sub change_content_javascript {
916: # If we're on Netscape 4, we need to use Layer-based code
917: if ($ENV{'browser.type'} eq 'netscape' &&
918: $ENV{'browser.version'} =~ /^4\./) {
919: return (<<NETSCAPE4);
920: function change(name, content) {
921: doc = document.layers[name+"___escape"].layers[0].document;
922: doc.open();
923: doc.write(content);
924: doc.close();
925: }
926: NETSCAPE4
927: } else {
928: # Otherwise, we need to use semi-standards-compliant code
929: # (technically, "innerHTML" isn't standard but the equivalent
930: # is really scary, and every useful browser supports it
931: return (<<DOMBASED);
932: function change(name, content) {
933: element = document.getElementById(name);
934: element.innerHTML = content;
935: }
936: DOMBASED
937: }
938: }
939:
940: =pod
941:
942: =item * changable_area($name, $origContent):
943:
944: This provides a "changable area" that can be modified on the fly via
945: the Javascript code provided in C<change_content_javascript>. $name is
946: the name you will use to reference the area later; do not repeat the
947: same name on a given HTML page more then once. $origContent is what
948: the area will originally contain, which can be left blank.
949:
950: =cut
951:
952: sub changable_area {
953: my ($name, $origContent) = @_;
954:
955: if ($ENV{'browser.type'} eq 'netscape' &&
956: $ENV{'browser.version'} =~ /^4\./) {
957: # If this is netscape 4, we need to use the Layer tag
958: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
959: } else {
960: return "<span id='$name'>$origContent</span>";
961: }
962: }
963:
964: =pod
965:
966: =back
967:
968: =cut
969:
970: ###############################################################
971: ## Home server <option> list generating code ##
972: ###############################################################
973:
974: =pod
975:
976: =head1 Home Server option list generating code
977:
978: =over 4
979:
980: =item * get_domains()
981:
982: Returns an array containing each of the domains listed in the hosts.tab
983: file.
984:
985: =cut
986:
987: #-------------------------------------------
988: sub get_domains {
989: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
990: my @domains;
991: my %seen;
992: foreach (sort values(%Apache::lonnet::hostdom)) {
993: push (@domains,$_) unless $seen{$_}++;
994: }
995: return @domains;
996: }
997:
998: # ------------------------------------------
999:
1000: sub domain_select {
1001: my ($name,$value,$multiple)=@_;
1002: my %domains=map {
1003: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1004: } &get_domains;
1005: if ($multiple) {
1006: $domains{''}=&mt('Any domain');
1007: return &multiple_select_form($name,$value,4,%domains);
1008: } else {
1009: return &select_form($name,$value,%domains);
1010: }
1011: }
1012:
1013: sub multiple_select_form {
1014: my ($name,$value,$size,%hash)=@_;
1015: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1016: my $output='';
1017: if (! defined($size)) {
1018: $size = 4;
1019: if (scalar(keys(%hash))<4) {
1020: $size = scalar(keys(%hash));
1021: }
1022: }
1023: $output.="\n<select name='$name' size='$size' multiple='1'>";
1024: foreach (sort(keys(%hash))) {
1025: $output.='<option value="'.$_.'" ';
1026: $output.='selected ' if ($selected{$_});
1027: $output.='>'.$hash{$_}."</option>\n";
1028: }
1029: $output.="</select>\n";
1030: return $output;
1031: }
1032:
1033: #-------------------------------------------
1034:
1035: =pod
1036:
1037: =item * select_form($defdom,$name,%hash)
1038:
1039: Returns a string containing a <select name='$name' size='1'> form to
1040: allow a user to select options from a hash option_name => displayed text.
1041: See lonrights.pm for an example invocation and use.
1042:
1043: =cut
1044:
1045: #-------------------------------------------
1046: sub select_form {
1047: my ($def,$name,%hash) = @_;
1048: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1049: my @keys;
1050: if (exists($hash{'select_form_order'})) {
1051: @keys=@{$hash{'select_form_order'}};
1052: } else {
1053: @keys=sort(keys(%hash));
1054: }
1055: foreach (@keys) {
1056: $selectform.="<option value=\"$_\" ".
1057: ($_ eq $def ? 'selected' : '').
1058: ">".&mt($hash{$_})."</option>\n";
1059: }
1060: $selectform.="</select>";
1061: return $selectform;
1062: }
1063:
1064: sub gradeleveldescription {
1065: my $gradelevel=shift;
1066: my %gradelevels=(0 => 'Not specified',
1067: 1 => 'Grade 1',
1068: 2 => 'Grade 2',
1069: 3 => 'Grade 3',
1070: 4 => 'Grade 4',
1071: 5 => 'Grade 5',
1072: 6 => 'Grade 6',
1073: 7 => 'Grade 7',
1074: 8 => 'Grade 8',
1075: 9 => 'Grade 9',
1076: 10 => 'Grade 10',
1077: 11 => 'Grade 11',
1078: 12 => 'Grade 12',
1079: 13 => 'Grade 13',
1080: 14 => '100 Level',
1081: 15 => '200 Level',
1082: 16 => '300 Level',
1083: 17 => '400 Level',
1084: 18 => 'Graduate Level');
1085: return &mt($gradelevels{$gradelevel});
1086: }
1087:
1088: sub select_level_form {
1089: my ($deflevel,$name)=@_;
1090: unless ($deflevel) { $deflevel=0; }
1091: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1092: for (my $i=0; $i<=18; $i++) {
1093: $selectform.="<option value=\"$i\" ".
1094: ($i==$deflevel ? 'selected' : '').
1095: ">".&gradeleveldescription($i)."</option>\n";
1096: }
1097: $selectform.="</select>";
1098: return $selectform;
1099: }
1100:
1101: #-------------------------------------------
1102:
1103: =pod
1104:
1105: =item * select_dom_form($defdom,$name,$includeempty)
1106:
1107: Returns a string containing a <select name='$name' size='1'> form to
1108: allow a user to select the domain to preform an operation in.
1109: See loncreateuser.pm for an example invocation and use.
1110:
1111: If the $includeempty flag is set, it also includes an empty choice ("no domain
1112: selected");
1113:
1114: =cut
1115:
1116: #-------------------------------------------
1117: sub select_dom_form {
1118: my ($defdom,$name,$includeempty) = @_;
1119: my @domains = get_domains();
1120: if ($includeempty) { @domains=('',@domains); }
1121: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1122: foreach (@domains) {
1123: $selectdomain.="<option value=\"$_\" ".
1124: ($_ eq $defdom ? 'selected' : '').
1125: ">$_</option>\n";
1126: }
1127: $selectdomain.="</select>";
1128: return $selectdomain;
1129: }
1130:
1131: #-------------------------------------------
1132:
1133: =pod
1134:
1135: =item * get_library_servers($domain)
1136:
1137: Returns a hash which contains keys like '103l3' and values like
1138: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1139: given $domain.
1140:
1141: =cut
1142:
1143: #-------------------------------------------
1144: sub get_library_servers {
1145: my $domain = shift;
1146: my %library_servers;
1147: foreach (keys(%Apache::lonnet::libserv)) {
1148: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1149: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1150: }
1151: }
1152: return %library_servers;
1153: }
1154:
1155: #-------------------------------------------
1156:
1157: =pod
1158:
1159: =item * home_server_option_list($domain)
1160:
1161: returns a string which contains an <option> list to be used in a
1162: <select> form input. See loncreateuser.pm for an example.
1163:
1164: =cut
1165:
1166: #-------------------------------------------
1167: sub home_server_option_list {
1168: my $domain = shift;
1169: my %servers = &get_library_servers($domain);
1170: my $result = '';
1171: foreach (sort keys(%servers)) {
1172: $result.=
1173: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1174: }
1175: return $result;
1176: }
1177:
1178: =pod
1179:
1180: =back
1181:
1182: =cut
1183:
1184: ###############################################################
1185: ## Decoding User Agent ##
1186: ###############################################################
1187:
1188: =pod
1189:
1190: =head1 Decoding the User Agent
1191:
1192: =over 4
1193:
1194: =item * &decode_user_agent()
1195:
1196: Inputs: $r
1197:
1198: Outputs:
1199:
1200: =over 4
1201:
1202: =item * $httpbrowser
1203:
1204: =item * $clientbrowser
1205:
1206: =item * $clientversion
1207:
1208: =item * $clientmathml
1209:
1210: =item * $clientunicode
1211:
1212: =item * $clientos
1213:
1214: =back
1215:
1216: =back
1217:
1218: =cut
1219:
1220: ###############################################################
1221: ###############################################################
1222: sub decode_user_agent {
1223: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1224: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1225: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1226: my $clientbrowser='unknown';
1227: my $clientversion='0';
1228: my $clientmathml='';
1229: my $clientunicode='0';
1230: for (my $i=0;$i<=$#browsertype;$i++) {
1231: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1232: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1233: $clientbrowser=$bname;
1234: $httpbrowser=~/$vreg/i;
1235: $clientversion=$1;
1236: $clientmathml=($clientversion>=$minv);
1237: $clientunicode=($clientversion>=$univ);
1238: }
1239: }
1240: my $clientos='unknown';
1241: if (($httpbrowser=~/linux/i) ||
1242: ($httpbrowser=~/unix/i) ||
1243: ($httpbrowser=~/ux/i) ||
1244: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1245: if (($httpbrowser=~/vax/i) ||
1246: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1247: if ($httpbrowser=~/next/i) { $clientos='next'; }
1248: if (($httpbrowser=~/mac/i) ||
1249: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1250: if ($httpbrowser=~/win/i) { $clientos='win'; }
1251: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1252: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1253: $clientunicode,$clientos,);
1254: }
1255:
1256: ###############################################################
1257: ## Authentication changing form generation subroutines ##
1258: ###############################################################
1259: ##
1260: ## All of the authform_xxxxxxx subroutines take their inputs in a
1261: ## hash, and have reasonable default values.
1262: ##
1263: ## formname = the name given in the <form> tag.
1264: #-------------------------------------------
1265:
1266: =pod
1267:
1268: =head1 Authentication Routines
1269:
1270: =over 4
1271:
1272: =item * authform_xxxxxx
1273:
1274: The authform_xxxxxx subroutines provide javascript and html forms which
1275: handle some of the conveniences required for authentication forms.
1276: This is not an optimal method, but it works.
1277:
1278: See loncreateuser.pm for invocation and use examples.
1279:
1280: =over 4
1281:
1282: =item * authform_header
1283:
1284: =item * authform_authorwarning
1285:
1286: =item * authform_nochange
1287:
1288: =item * authform_kerberos
1289:
1290: =item * authform_internal
1291:
1292: =item * authform_filesystem
1293:
1294: =back
1295:
1296: =back
1297:
1298: =cut
1299:
1300: #-------------------------------------------
1301: sub authform_header{
1302: my %in = (
1303: formname => 'cu',
1304: kerb_def_dom => '',
1305: @_,
1306: );
1307: $in{'formname'} = 'document.' . $in{'formname'};
1308: my $result='';
1309:
1310: #---------------------------------------------- Code for upper case translation
1311: my $Javascript_toUpperCase;
1312: unless ($in{kerb_def_dom}) {
1313: $Javascript_toUpperCase =<<"END";
1314: switch (choice) {
1315: case 'krb': currentform.elements[choicearg].value =
1316: currentform.elements[choicearg].value.toUpperCase();
1317: break;
1318: default:
1319: }
1320: END
1321: } else {
1322: $Javascript_toUpperCase = "";
1323: }
1324:
1325: my $radioval = "'nochange'";
1326: if (exists($in{'curr_authtype'}) &&
1327: defined($in{'curr_authtype'}) &&
1328: $in{'curr_authtype'} ne '') {
1329: $radioval = "'$in{'curr_authtype'}arg'";
1330: }
1331: my $argfield = 'null';
1332: if ( grep/^mode$/,(keys %in) ) {
1333: if ($in{'mode'} eq 'modifycourse') {
1334: if ( grep/^curr_authtype$/,(keys %in) ) {
1335: $radioval = "'$in{'curr_authtype'}'";
1336: }
1337: if ( grep/^curr_autharg$/,(keys %in) ) {
1338: unless ($in{'curr_autharg'} eq '') {
1339: $argfield = "'$in{'curr_autharg'}'";
1340: }
1341: }
1342: }
1343: }
1344:
1345: $result.=<<"END";
1346: var current = new Object();
1347: current.radiovalue = $radioval;
1348: current.argfield = $argfield;
1349:
1350: function changed_radio(choice,currentform) {
1351: var choicearg = choice + 'arg';
1352: // If a radio button in changed, we need to change the argfield
1353: if (current.radiovalue != choice) {
1354: current.radiovalue = choice;
1355: if (current.argfield != null) {
1356: currentform.elements[current.argfield].value = '';
1357: }
1358: if (choice == 'nochange') {
1359: current.argfield = null;
1360: } else {
1361: current.argfield = choicearg;
1362: switch(choice) {
1363: case 'krb':
1364: currentform.elements[current.argfield].value =
1365: "$in{'kerb_def_dom'}";
1366: break;
1367: default:
1368: break;
1369: }
1370: }
1371: }
1372: return;
1373: }
1374:
1375: function changed_text(choice,currentform) {
1376: var choicearg = choice + 'arg';
1377: if (currentform.elements[choicearg].value !='') {
1378: $Javascript_toUpperCase
1379: // clear old field
1380: if ((current.argfield != choicearg) && (current.argfield != null)) {
1381: currentform.elements[current.argfield].value = '';
1382: }
1383: current.argfield = choicearg;
1384: }
1385: set_auth_radio_buttons(choice,currentform);
1386: return;
1387: }
1388:
1389: function set_auth_radio_buttons(newvalue,currentform) {
1390: var i=0;
1391: while (i < currentform.login.length) {
1392: if (currentform.login[i].value == newvalue) { break; }
1393: i++;
1394: }
1395: if (i == currentform.login.length) {
1396: return;
1397: }
1398: current.radiovalue = newvalue;
1399: currentform.login[i].checked = true;
1400: return;
1401: }
1402: END
1403: return $result;
1404: }
1405:
1406: sub authform_authorwarning{
1407: my $result='';
1408: $result='<i>'.
1409: &mt('As a general rule, only authors or co-authors should be '.
1410: 'filesystem authenticated '.
1411: '(which allows access to the server filesystem).')."</i>\n";
1412: return $result;
1413: }
1414:
1415: sub authform_nochange{
1416: my %in = (
1417: formname => 'document.cu',
1418: kerb_def_dom => 'MSU.EDU',
1419: @_,
1420: );
1421: my $result = &mt('[_1] Do not change login data',
1422: '<input type="radio" name="login" value="nochange" '.
1423: 'checked="checked" onclick="'.
1424: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1425: return $result;
1426: }
1427:
1428: sub authform_kerberos{
1429: my %in = (
1430: formname => 'document.cu',
1431: kerb_def_dom => 'MSU.EDU',
1432: kerb_def_auth => 'krb4',
1433: @_,
1434: );
1435: my ($check4,$check5,$krbarg);
1436: if ($in{'kerb_def_auth'} eq 'krb5') {
1437: $check5 = " checked=\"on\"";
1438: } else {
1439: $check4 = " checked=\"on\"";
1440: }
1441: $krbarg = $in{'kerb_def_dom'};
1442:
1443: my $krbcheck = "";
1444: if ( grep/^curr_authtype$/,(keys %in) ) {
1445: if ($in{'curr_authtype'} =~ m/^krb/) {
1446: $krbcheck = " checked=\"on\"";
1447: if ( grep/^curr_autharg$/,(keys %in) ) {
1448: $krbarg = $in{'curr_autharg'};
1449: }
1450: }
1451: }
1452:
1453: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1454: my $result .= &mt
1455: ('[_1] Kerberos authenticated with domain [_2] '.
1456: '[_3] Version 4 [_4] Version 5',
1457: '<input type="radio" name="login" value="krb" '.
1458: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1459: '<input type="text" size="10" name="krbarg" '.
1460: 'value="'.$krbarg.'" '.
1461: 'onchange="'.$jscall.'" />',
1462: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1463: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1464: return $result;
1465: }
1466:
1467: sub authform_internal{
1468: my %args = (
1469: formname => 'document.cu',
1470: kerb_def_dom => 'MSU.EDU',
1471: @_,
1472: );
1473:
1474: my $intcheck = "";
1475: my $intarg = 'value=""';
1476: if ( grep/^curr_authtype$/,(keys %args) ) {
1477: if ($args{'curr_authtype'} eq 'int') {
1478: $intcheck = " checked=\"on\"";
1479: if ( grep/^curr_autharg$/,(keys %args) ) {
1480: $intarg = "value=\"$args{'curr_autharg'}\"";
1481: }
1482: }
1483: }
1484:
1485: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1486: my $result.=&mt
1487: ('[_1] Internally authenticated (with initial password [_2])',
1488: '<input type="radio" name="login" value="int" '.$intcheck.
1489: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1490: '<input type="text" size="10" name="intarg" '.$intarg.
1491: ' onchange="'.$jscall.'" />');
1492: return $result;
1493: }
1494:
1495: sub authform_local{
1496: my %in = (
1497: formname => 'document.cu',
1498: kerb_def_dom => 'MSU.EDU',
1499: @_,
1500: );
1501:
1502: my $loccheck = "";
1503: my $locarg = 'value=""';
1504: if ( grep/^curr_authtype$/,(keys %in) ) {
1505: if ($in{'curr_authtype'} eq 'loc') {
1506: $loccheck = " checked=\"on\"";
1507: if ( grep/^curr_autharg$/,(keys %in) ) {
1508: $locarg = "value=\"$in{'curr_autharg'}\"";
1509: }
1510: }
1511: }
1512:
1513: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1514: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1515: '<input type="radio" name="login" value="loc" '.$loccheck.
1516: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1517: '<input type="text" size="10" name="locarg" '.$locarg.
1518: ' onchange="'.$jscall.'" />');
1519: return $result;
1520: }
1521:
1522: sub authform_filesystem{
1523: my %in = (
1524: formname => 'document.cu',
1525: kerb_def_dom => 'MSU.EDU',
1526: @_,
1527: );
1528: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1529: my $result.= &mt
1530: ('[_1] Filesystem Authenticated (with initial password [_2])',
1531: '<input type="radio" name="login" value="fsys" '.
1532: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1533: '<input type="text" size="10" name="fsysarg" value="" '.
1534: 'onchange="'.$jscall.'" />');
1535: return $result;
1536: }
1537:
1538: ###############################################################
1539: ## Get Authentication Defaults for Domain ##
1540: ###############################################################
1541:
1542: =pod
1543:
1544: =head1 Domains and Authentication
1545:
1546: Returns default authentication type and an associated argument as
1547: listed in file 'domain.tab'.
1548:
1549: =over 4
1550:
1551: =item * get_auth_defaults
1552:
1553: get_auth_defaults($target_domain) returns the default authentication
1554: type and an associated argument (initial password or a kerberos domain).
1555: These values are stored in lonTabs/domain.tab
1556:
1557: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1558:
1559: If target_domain is not found in domain.tab, returns nothing ('').
1560:
1561: =cut
1562:
1563: #-------------------------------------------
1564: sub get_auth_defaults {
1565: my $domain=shift;
1566: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1567: }
1568: ###############################################################
1569: ## End Get Authentication Defaults for Domain ##
1570: ###############################################################
1571:
1572: ###############################################################
1573: ## Get Kerberos Defaults for Domain ##
1574: ###############################################################
1575: ##
1576: ## Returns default kerberos version and an associated argument
1577: ## as listed in file domain.tab. If not listed, provides
1578: ## appropriate default domain and kerberos version.
1579: ##
1580: #-------------------------------------------
1581:
1582: =pod
1583:
1584: =item * get_kerberos_defaults
1585:
1586: get_kerberos_defaults($target_domain) returns the default kerberos
1587: version and domain. If not found in domain.tabs, it defaults to
1588: version 4 and the domain of the server.
1589:
1590: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1591:
1592: =cut
1593:
1594: #-------------------------------------------
1595: sub get_kerberos_defaults {
1596: my $domain=shift;
1597: my ($krbdef,$krbdefdom) =
1598: &Apache::loncommon::get_auth_defaults($domain);
1599: unless ($krbdef =~/^krb/ && $krbdefdom) {
1600: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1601: my $krbdefdom=$1;
1602: $krbdefdom=~tr/a-z/A-Z/;
1603: $krbdef = "krb4";
1604: }
1605: return ($krbdef,$krbdefdom);
1606: }
1607:
1608: =pod
1609:
1610: =back
1611:
1612: =cut
1613:
1614: ###############################################################
1615: ## Thesaurus Functions ##
1616: ###############################################################
1617:
1618: =pod
1619:
1620: =head1 Thesaurus Functions
1621:
1622: =over 4
1623:
1624: =item * initialize_keywords
1625:
1626: Initializes the package variable %Keywords if it is empty. Uses the
1627: package variable $thesaurus_db_file.
1628:
1629: =cut
1630:
1631: ###################################################
1632:
1633: sub initialize_keywords {
1634: return 1 if (scalar keys(%Keywords));
1635: # If we are here, %Keywords is empty, so fill it up
1636: # Make sure the file we need exists...
1637: if (! -e $thesaurus_db_file) {
1638: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1639: " failed because it does not exist");
1640: return 0;
1641: }
1642: # Set up the hash as a database
1643: my %thesaurus_db;
1644: if (! tie(%thesaurus_db,'GDBM_File',
1645: $thesaurus_db_file,&GDBM_READER(),0640)){
1646: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1647: $thesaurus_db_file);
1648: return 0;
1649: }
1650: # Get the average number of appearances of a word.
1651: my $avecount = $thesaurus_db{'average.count'};
1652: # Put keywords (those that appear > average) into %Keywords
1653: while (my ($word,$data)=each (%thesaurus_db)) {
1654: my ($count,undef) = split /:/,$data;
1655: $Keywords{$word}++ if ($count > $avecount);
1656: }
1657: untie %thesaurus_db;
1658: # Remove special values from %Keywords.
1659: foreach ('total.count','average.count') {
1660: delete($Keywords{$_}) if (exists($Keywords{$_}));
1661: }
1662: return 1;
1663: }
1664:
1665: ###################################################
1666:
1667: =pod
1668:
1669: =item * keyword($word)
1670:
1671: Returns true if $word is a keyword. A keyword is a word that appears more
1672: than the average number of times in the thesaurus database. Calls
1673: &initialize_keywords
1674:
1675: =cut
1676:
1677: ###################################################
1678:
1679: sub keyword {
1680: return if (!&initialize_keywords());
1681: my $word=lc(shift());
1682: $word=~s/\W//g;
1683: return exists($Keywords{$word});
1684: }
1685:
1686: ###############################################################
1687:
1688: =pod
1689:
1690: =item * get_related_words
1691:
1692: Look up a word in the thesaurus. Takes a scalar argument and returns
1693: an array of words. If the keyword is not in the thesaurus, an empty array
1694: will be returned. The order of the words returned is determined by the
1695: database which holds them.
1696:
1697: Uses global $thesaurus_db_file.
1698:
1699: =cut
1700:
1701: ###############################################################
1702: sub get_related_words {
1703: my $keyword = shift;
1704: my %thesaurus_db;
1705: if (! -e $thesaurus_db_file) {
1706: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1707: "failed because the file does not exist");
1708: return ();
1709: }
1710: if (! tie(%thesaurus_db,'GDBM_File',
1711: $thesaurus_db_file,&GDBM_READER(),0640)){
1712: return ();
1713: }
1714: my @Words=();
1715: if (exists($thesaurus_db{$keyword})) {
1716: $_ = $thesaurus_db{$keyword};
1717: (undef,@Words) = split/:/; # The first element is the number of times
1718: # the word appears. We do not need it now.
1719: for (my $i=0;$i<=$#Words;$i++) {
1720: ($Words[$i],undef)= split/\,/,$Words[$i];
1721: }
1722: }
1723: untie %thesaurus_db;
1724: return @Words;
1725: }
1726:
1727: =pod
1728:
1729: =back
1730:
1731: =cut
1732:
1733: # -------------------------------------------------------------- Plaintext name
1734: =pod
1735:
1736: =head1 User Name Functions
1737:
1738: =over 4
1739:
1740: =item * plainname($uname,$udom)
1741:
1742: Takes a users logon name and returns it as a string in
1743: "first middle last generation" form
1744:
1745: =cut
1746:
1747: ###############################################################
1748: sub plainname {
1749: my ($uname,$udom)=@_;
1750: my %names=&Apache::lonnet::get('environment',
1751: ['firstname','middlename','lastname','generation'],
1752: $udom,$uname);
1753: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1754: $names{'lastname'}.' '.$names{'generation'};
1755: $name=~s/\s+$//;
1756: $name=~s/\s+/ /g;
1757: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1758: return $name;
1759: }
1760:
1761: # -------------------------------------------------------------------- Nickname
1762: =pod
1763:
1764: =item * nickname($uname,$udom)
1765:
1766: Gets a users name and returns it as a string as
1767:
1768: ""nickname""
1769:
1770: if the user has a nickname or
1771:
1772: "first middle last generation"
1773:
1774: if the user does not
1775:
1776: =cut
1777:
1778: sub nickname {
1779: my ($uname,$udom)=@_;
1780: my %names;
1781: if ($uname eq $ENV{'user.name'} &&
1782: $udom eq $ENV{'user.domain'}) {
1783: %names=('nickname' => $ENV{'environment.nickname'} ,
1784: 'firstname' => $ENV{'environment.firstname'} ,
1785: 'middlename' => $ENV{'environment.middlename'},
1786: 'lastname' => $ENV{'environment.lastname'} ,
1787: 'generation' => $ENV{'environment.generation'});
1788: } else {
1789: %names=&Apache::lonnet::get('environment',
1790: ['nickname','firstname','middlename',
1791: 'lastname','generation'],$udom,$uname);
1792: }
1793: my $name=$names{'nickname'};
1794: if ($name) {
1795: $name='"'.$name.'"';
1796: } else {
1797: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1798: $names{'lastname'}.' '.$names{'generation'};
1799: $name=~s/\s+$//;
1800: $name=~s/\s+/ /g;
1801: }
1802: return $name;
1803: }
1804:
1805:
1806: # ------------------------------------------------------------------ Screenname
1807:
1808: =pod
1809:
1810: =item * screenname($uname,$udom)
1811:
1812: Gets a users screenname and returns it as a string
1813:
1814: =cut
1815:
1816: sub screenname {
1817: my ($uname,$udom)=@_;
1818: if ($uname eq $ENV{'user.name'} &&
1819: $udom eq $ENV{'user.domain'}) {return $ENV{'environment.screenname'};}
1820: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1821: return $names{'screenname'};
1822: }
1823:
1824:
1825: # ------------------------------------------------------------- Message Wrapper
1826:
1827: sub messagewrapper {
1828: my ($link,$username,$domain)=@_;
1829: return
1830: '<a href="/adm/email?compose=individual&'.
1831: 'recname='.$username.'&recdom='.$domain.'" '.
1832: 'title="'.&mt('Send message').'">'.$link.'</a>';
1833: }
1834: # --------------------------------------------------------------- Notes Wrapper
1835:
1836: sub noteswrapper {
1837: my ($link,$un,$do)=@_;
1838: return
1839: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1840: }
1841: # ------------------------------------------------------------- Aboutme Wrapper
1842:
1843: sub aboutmewrapper {
1844: my ($link,$username,$domain,$target)=@_;
1845: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1846: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1847: }
1848:
1849: # ------------------------------------------------------------ Syllabus Wrapper
1850:
1851:
1852: sub syllabuswrapper {
1853: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1854: if ($fontcolor) {
1855: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1856: }
1857: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1858: }
1859:
1860: sub track_student_link {
1861: my ($linktext,$sname,$sdom,$target) = @_;
1862: my $link ="/adm/trackstudent";
1863: my $title = 'View recent activity';
1864: if (defined($sname) && $sname !~ /^\s*$/ &&
1865: defined($sdom) && $sdom !~ /^\s*$/) {
1866: $link .= "?selected_student=$sname:$sdom";
1867: $title .= ' of this student';
1868: }
1869: if (defined($target) && $target !~ /^\s*$/) {
1870: $target = qq{target="$target"};
1871: } else {
1872: $target = '';
1873: }
1874: return qq{<a href="$link" title="$title" $target>$linktext</a>};
1875: }
1876:
1877:
1878:
1879: =pod
1880:
1881: =back
1882:
1883: =head1 Access .tab File Data
1884:
1885: =over 4
1886:
1887: =item * languageids()
1888:
1889: returns list of all language ids
1890:
1891: =cut
1892:
1893: sub languageids {
1894: return sort(keys(%language));
1895: }
1896:
1897: =pod
1898:
1899: =item * languagedescription()
1900:
1901: returns description of a specified language id
1902:
1903: =cut
1904:
1905: sub languagedescription {
1906: my $code=shift;
1907: return ($supported_language{$code}?'* ':'').
1908: $language{$code}.
1909: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1910: }
1911:
1912: sub plainlanguagedescription {
1913: my $code=shift;
1914: return $language{$code};
1915: }
1916:
1917: sub supportedlanguagecode {
1918: my $code=shift;
1919: return $supported_language{$code};
1920: }
1921:
1922: =pod
1923:
1924: =item * copyrightids()
1925:
1926: returns list of all copyrights
1927:
1928: =cut
1929:
1930: sub copyrightids {
1931: return sort(keys(%cprtag));
1932: }
1933:
1934: =pod
1935:
1936: =item * copyrightdescription()
1937:
1938: returns description of a specified copyright id
1939:
1940: =cut
1941:
1942: sub copyrightdescription {
1943: return &mt($cprtag{shift(@_)});
1944: }
1945:
1946: =pod
1947:
1948: =item * source_copyrightids()
1949:
1950: returns list of all source copyrights
1951:
1952: =cut
1953:
1954: sub source_copyrightids {
1955: return sort(keys(%scprtag));
1956: }
1957:
1958: =pod
1959:
1960: =item * source_copyrightdescription()
1961:
1962: returns description of a specified source copyright id
1963:
1964: =cut
1965:
1966: sub source_copyrightdescription {
1967: return &mt($scprtag{shift(@_)});
1968: }
1969:
1970: =pod
1971:
1972: =item * filecategories()
1973:
1974: returns list of all file categories
1975:
1976: =cut
1977:
1978: sub filecategories {
1979: return sort(keys(%category_extensions));
1980: }
1981:
1982: =pod
1983:
1984: =item * filecategorytypes()
1985:
1986: returns list of file types belonging to a given file
1987: category
1988:
1989: =cut
1990:
1991: sub filecategorytypes {
1992: return @{$category_extensions{lc($_[0])}};
1993: }
1994:
1995: =pod
1996:
1997: =item * fileembstyle()
1998:
1999: returns embedding style for a specified file type
2000:
2001: =cut
2002:
2003: sub fileembstyle {
2004: return $fe{lc(shift(@_))};
2005: }
2006:
2007:
2008: sub filecategoryselect {
2009: my ($name,$value)=@_;
2010: return &select_form($value,$name,
2011: '' => &mt('Any category'),
2012: map { $_,$_ } sort(keys(%category_extensions)));
2013: }
2014:
2015: =pod
2016:
2017: =item * filedescription()
2018:
2019: returns description for a specified file type
2020:
2021: =cut
2022:
2023: sub filedescription {
2024: my $file_description = $fd{lc(shift())};
2025: $file_description =~ s:([\[\]]):~$1:g;
2026: return &mt($file_description);
2027: }
2028:
2029: =pod
2030:
2031: =item * filedescriptionex()
2032:
2033: returns description for a specified file type with
2034: extra formatting
2035:
2036: =cut
2037:
2038: sub filedescriptionex {
2039: my $ex=shift;
2040: my $file_description = $fd{lc($ex)};
2041: $file_description =~ s:([\[\]]):~$1:g;
2042: return '.'.$ex.' '.&mt($file_description);
2043: }
2044:
2045: # End of .tab access
2046: =pod
2047:
2048: =back
2049:
2050: =cut
2051:
2052: # ------------------------------------------------------------------ File Types
2053: sub fileextensions {
2054: return sort(keys(%fe));
2055: }
2056:
2057: # ----------------------------------------------------------- Display Languages
2058: # returns a hash with all desired display languages
2059: #
2060:
2061: sub display_languages {
2062: my %languages=();
2063: foreach (&preferred_languages()) {
2064: $languages{$_}=1;
2065: }
2066: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2067: if ($ENV{'form.displaylanguage'}) {
2068: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2069: $languages{$_}=1;
2070: }
2071: }
2072: return %languages;
2073: }
2074:
2075: sub preferred_languages {
2076: my @languages=();
2077: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2078: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2079: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2080: }
2081: if ($ENV{'environment.languages'}) {
2082: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2083: }
2084: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2085: if ($browser) {
2086: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2087: }
2088: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2089: @languages=(@languages,
2090: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2091: }
2092: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2093: @languages=(@languages,
2094: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2095: }
2096: if ($Apache::lonnet::domain_lang_def{
2097: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2098: @languages=(@languages,
2099: $Apache::lonnet::domain_lang_def{
2100: $Apache::lonnet::perlvar{'lonDefDomain'}});
2101: }
2102: # turn "en-ca" into "en-ca,en"
2103: my @genlanguages;
2104: foreach (@languages) {
2105: unless ($_=~/\w/) { next; }
2106: push (@genlanguages,$_);
2107: if ($_=~/(\-|\_)/) {
2108: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2109: }
2110: }
2111: return @genlanguages;
2112: }
2113:
2114: ###############################################################
2115: ## Student Answer Attempts ##
2116: ###############################################################
2117:
2118: =pod
2119:
2120: =head1 Alternate Problem Views
2121:
2122: =over 4
2123:
2124: =item * get_previous_attempt($symb, $username, $domain, $course,
2125: $getattempt, $regexp, $gradesub)
2126:
2127: Return string with previous attempt on problem. Arguments:
2128:
2129: =over 4
2130:
2131: =item * $symb: Problem, including path
2132:
2133: =item * $username: username of the desired student
2134:
2135: =item * $domain: domain of the desired student
2136:
2137: =item * $course: Course ID
2138:
2139: =item * $getattempt: Leave blank for all attempts, otherwise put
2140: something
2141:
2142: =item * $regexp: if string matches this regexp, the string will be
2143: sent to $gradesub
2144:
2145: =item * $gradesub: routine that processes the string if it matches $regexp
2146:
2147: =back
2148:
2149: The output string is a table containing all desired attempts, if any.
2150:
2151: =cut
2152:
2153: sub get_previous_attempt {
2154: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2155: my $prevattempts='';
2156: no strict 'refs';
2157: if ($symb) {
2158: my (%returnhash)=
2159: &Apache::lonnet::restore($symb,$course,$domain,$username);
2160: if ($returnhash{'version'}) {
2161: my %lasthash=();
2162: my $version;
2163: for ($version=1;$version<=$returnhash{'version'};$version++) {
2164: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2165: $lasthash{$_}=$returnhash{$version.':'.$_};
2166: }
2167: }
2168: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2169: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2170: foreach (sort(keys %lasthash)) {
2171: my ($ign,@parts) = split(/\./,$_);
2172: if ($#parts > 0) {
2173: my $data=$parts[-1];
2174: pop(@parts);
2175: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2176: } else {
2177: if ($#parts == 0) {
2178: $prevattempts.='<th>'.$parts[0].'</th>';
2179: } else {
2180: $prevattempts.='<th>'.$ign.'</th>';
2181: }
2182: }
2183: }
2184: if ($getattempt eq '') {
2185: for ($version=1;$version<=$returnhash{'version'};$version++) {
2186: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2187: foreach (sort(keys %lasthash)) {
2188: my $value;
2189: if ($_ =~ /timestamp/) {
2190: $value=scalar(localtime($returnhash{$version.':'.$_}));
2191: } else {
2192: $value=$returnhash{$version.':'.$_};
2193: }
2194: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2195: }
2196: }
2197: }
2198: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2199: foreach (sort(keys %lasthash)) {
2200: my $value;
2201: if ($_ =~ /timestamp/) {
2202: $value=scalar(localtime($lasthash{$_}));
2203: } else {
2204: $value=$lasthash{$_};
2205: }
2206: $value=&Apache::lonnet::unescape($value);
2207: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2208: $prevattempts.='<td>'.$value.' </td>';
2209: }
2210: $prevattempts.='</tr></table></td></tr></table>';
2211: } else {
2212: $prevattempts='Nothing submitted - no attempts.';
2213: }
2214: } else {
2215: $prevattempts='No data.';
2216: }
2217: }
2218:
2219: sub relative_to_absolute {
2220: my ($url,$output)=@_;
2221: my $parser=HTML::TokeParser->new(\$output);
2222: my $token;
2223: my $thisdir=$url;
2224: my @rlinks=();
2225: while ($token=$parser->get_token) {
2226: if ($token->[0] eq 'S') {
2227: if ($token->[1] eq 'a') {
2228: if ($token->[2]->{'href'}) {
2229: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2230: }
2231: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2232: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2233: } elsif ($token->[1] eq 'base') {
2234: $thisdir=$token->[2]->{'href'};
2235: }
2236: }
2237: }
2238: $thisdir=~s-/[^/]*$--;
2239: foreach (@rlinks) {
2240: unless (($_=~/^http:\/\//i) ||
2241: ($_=~/^\//) ||
2242: ($_=~/^javascript:/i) ||
2243: ($_=~/^mailto:/i) ||
2244: ($_=~/^\#/)) {
2245: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2246: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2247: }
2248: }
2249: # -------------------------------------------------- Deal with Applet codebases
2250: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2251: return $output;
2252: }
2253:
2254: =pod
2255:
2256: =item * get_student_view
2257:
2258: show a snapshot of what student was looking at
2259:
2260: =cut
2261:
2262: sub get_student_view {
2263: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2264: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2265: my (%form);
2266: my @elements=('symb','courseid','domain','username');
2267: foreach my $element (@elements) {
2268: $form{'grade_'.$element}=eval '$'.$element #'
2269: }
2270: if (defined($moreenv)) {
2271: %form=(%form,%{$moreenv});
2272: }
2273: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2274: $feedurl=&Apache::lonnet::clutter($feedurl);
2275: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2276: $userview=~s/\<body[^\>]*\>//gi;
2277: $userview=~s/\<\/body\>//gi;
2278: $userview=~s/\<html\>//gi;
2279: $userview=~s/\<\/html\>//gi;
2280: $userview=~s/\<head\>//gi;
2281: $userview=~s/\<\/head\>//gi;
2282: $userview=~s/action\s*\=/would_be_action\=/gi;
2283: $userview=&relative_to_absolute($feedurl,$userview);
2284: return $userview;
2285: }
2286:
2287: =pod
2288:
2289: =item * get_student_answers()
2290:
2291: show a snapshot of how student was answering problem
2292:
2293: =cut
2294:
2295: sub get_student_answers {
2296: my ($symb,$username,$domain,$courseid,%form) = @_;
2297: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2298: my (%moreenv);
2299: my @elements=('symb','courseid','domain','username');
2300: foreach my $element (@elements) {
2301: $moreenv{'grade_'.$element}=eval '$'.$element #'
2302: }
2303: $moreenv{'grade_target'}='answer';
2304: %moreenv=(%form,%moreenv);
2305: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2306: return $userview;
2307: }
2308:
2309: =pod
2310:
2311: =item * &submlink()
2312:
2313: Inputs: $text $uname $udom $symb
2314:
2315: Returns: A link to grades.pm such as to see the SUBM view of a student
2316:
2317: =cut
2318:
2319: ###############################################
2320: sub submlink {
2321: my ($text,$uname,$udom,$symb)=@_;
2322: if (!($uname && $udom)) {
2323: (my $cursymb, my $courseid,$udom,$uname)=
2324: &Apache::lonxml::whichuser($symb);
2325: if (!$symb) { $symb=$cursymb; }
2326: }
2327: if (!$symb) { $symb=&symbread(); }
2328: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2329: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2330: }
2331: ##############################################
2332:
2333: =pod
2334:
2335: =back
2336:
2337: =cut
2338:
2339: ###############################################
2340:
2341:
2342: sub timehash {
2343: my @ltime=localtime(shift);
2344: return ( 'seconds' => $ltime[0],
2345: 'minutes' => $ltime[1],
2346: 'hours' => $ltime[2],
2347: 'day' => $ltime[3],
2348: 'month' => $ltime[4]+1,
2349: 'year' => $ltime[5]+1900,
2350: 'weekday' => $ltime[6],
2351: 'dayyear' => $ltime[7]+1,
2352: 'dlsav' => $ltime[8] );
2353: }
2354:
2355: sub maketime {
2356: my %th=@_;
2357: return POSIX::mktime(
2358: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2359: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2360: }
2361:
2362: #########################################
2363:
2364: sub findallcourses {
2365: my %courses=();
2366: my $now=time;
2367: foreach (keys %ENV) {
2368: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2369: my ($starttime,$endtime)=$ENV{$_};
2370: my $active=1;
2371: if ($starttime) {
2372: if ($now<$starttime) { $active=0; }
2373: }
2374: if ($endtime) {
2375: if ($now>$endtime) { $active=0; }
2376: }
2377: if ($active) { $courses{$1.'_'.$2}=1; }
2378: }
2379: }
2380: return keys %courses;
2381: }
2382:
2383: ###############################################
2384: ###############################################
2385:
2386: =pod
2387:
2388: =head1 Domain Template Functions
2389:
2390: =over 4
2391:
2392: =item * &determinedomain()
2393:
2394: Inputs: $domain (usually will be undef)
2395:
2396: Returns: Determines which domain should be used for designs
2397:
2398: =cut
2399:
2400: ###############################################
2401: sub determinedomain {
2402: my $domain=shift;
2403: if (! $domain) {
2404: # Determine domain if we have not been given one
2405: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2406: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2407: if ($ENV{'request.role.domain'}) {
2408: $domain=$ENV{'request.role.domain'};
2409: }
2410: }
2411: return $domain;
2412: }
2413: ###############################################
2414: =pod
2415:
2416: =item * &domainlogo()
2417:
2418: Inputs: $domain (usually will be undef)
2419:
2420: Returns: A link to a domain logo, if the domain logo exists.
2421: If the domain logo does not exist, a description of the domain.
2422:
2423: =cut
2424:
2425: ###############################################
2426: sub domainlogo {
2427: my $domain = &determinedomain(shift);
2428: # See if there is a logo
2429: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2430: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2431: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2432: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2433: return $Apache::lonnet::domaindescription{$domain};
2434: } else {
2435: return '';
2436: }
2437: }
2438: ##############################################
2439:
2440: =pod
2441:
2442: =item * &designparm()
2443:
2444: Inputs: $which parameter; $domain (usually will be undef)
2445:
2446: Returns: value of designparamter $which
2447:
2448: =cut
2449:
2450: ##############################################
2451: sub designparm {
2452: my ($which,$domain)=@_;
2453: if ($ENV{'browser.blackwhite'} eq 'on') {
2454: if ($which=~/\.(font|alink|vlink|link)$/) {
2455: return '#000000';
2456: }
2457: if ($which=~/\.(pgbg|sidebg)$/) {
2458: return '#FFFFFF';
2459: }
2460: if ($which=~/\.tabbg$/) {
2461: return '#CCCCCC';
2462: }
2463: }
2464: if ($ENV{'environment.color.'.$which}) {
2465: return $ENV{'environment.color.'.$which};
2466: }
2467: $domain=&determinedomain($domain);
2468: if ($designhash{$domain.'.'.$which}) {
2469: return $designhash{$domain.'.'.$which};
2470: } else {
2471: return $designhash{'default.'.$which};
2472: }
2473: }
2474:
2475: ###############################################
2476: ###############################################
2477:
2478: =pod
2479:
2480: =back
2481:
2482: =head1 HTTP Helpers
2483:
2484: =over 4
2485:
2486: =item * &bodytag()
2487:
2488: Returns a uniform header for LON-CAPA web pages.
2489:
2490: Inputs:
2491:
2492: =over 4
2493:
2494: =item * $title, A title to be displayed on the page.
2495:
2496: =item * $function, the current role (can be undef).
2497:
2498: =item * $addentries, extra parameters for the <body> tag.
2499:
2500: =item * $bodyonly, if defined, only return the <body> tag.
2501:
2502: =item * $domain, if defined, force a given domain.
2503:
2504: =item * $forcereg, if page should register as content page (relevant for
2505: text interface only)
2506:
2507: =back
2508:
2509: Returns: A uniform header for LON-CAPA web pages.
2510: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2511: If $bodyonly is undef or zero, an html string containing a <body> tag and
2512: other decorations will be returned.
2513:
2514: =cut
2515:
2516: sub bodytag {
2517: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2518: $title=&mt($title);
2519: $function = &get_users_function() if (!$function);
2520: my $img=&designparm($function.'.img',$domain);
2521: my $pgbg=&designparm($function.'.pgbg',$domain);
2522: my $tabbg=&designparm($function.'.tabbg',$domain);
2523: my $font=&designparm($function.'.font',$domain);
2524: my $link=&designparm($function.'.link',$domain);
2525: my $alink=&designparm($function.'.alink',$domain);
2526: my $vlink=&designparm($function.'.vlink',$domain);
2527: my $sidebg=&designparm($function.'.sidebg',$domain);
2528: # Accessibility font enhance
2529: unless ($addentries) { $addentries=''; }
2530: my $addstyle='';
2531: if ($ENV{'browser.fontenhance'} eq 'on') {
2532: $addstyle=' font-size: x-large;';
2533: }
2534: # role and realm
2535: my ($role,$realm)
2536: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2537: # realm
2538: if ($ENV{'request.course.id'}) {
2539: $realm=
2540: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2541: }
2542: unless ($realm) { $realm=' '; }
2543: # Set messages
2544: my $messages=&domainlogo($domain);
2545: # Port for miniserver
2546: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2547: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2548: # construct main body tag
2549: my $bodytag = <<END;
2550: <style>
2551: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2552: a:focus { color: red; background: yellow }
2553: </style>
2554: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2555: style="margin-top: 0px;$addstyle" $addentries>
2556: END
2557: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2558: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2559: if ($bodyonly) {
2560: return $bodytag;
2561: } elsif ($ENV{'browser.interface'} eq 'textual') {
2562: # Accessibility
2563: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2564: $forcereg).
2565: '<h1>LON-CAPA: '.$title.'</h1>';
2566: } elsif ($ENV{'environment.remote'} eq 'off') {
2567: # No Remote
2568: my $roleinfo=(<<ENDROLE);
2569: <td bgcolor="$tabbg" align="right">
2570: <p>
2571: <font size="2" face="Arial, Helvetica, sans-serif">
2572: $ENV{'environment.firstname'}
2573: $ENV{'environment.middlename'}
2574: $ENV{'environment.lastname'}
2575: $ENV{'environment.generation'}
2576: </font>
2577: <br />
2578: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2579: <br />
2580: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2581: </p>
2582: </td>
2583: ENDROLE
2584: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2585: $forcereg).
2586: '<table bgcolor="'.$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>'.$title.
2587: '</b></font></td>'.$roleinfo.'</tr></table>';
2588: }
2589:
2590: #
2591: # Top frame rendering, Remote is up
2592: #
2593: return(<<ENDBODY);
2594: $bodytag
2595: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2596: <tr><td bgcolor="$sidebg">
2597: $upperleft</td>
2598: <td bgcolor="$sidebg" align="right">$messages </td>
2599: </tr>
2600: <tr>
2601: <td rowspan="3" bgcolor="$tabbg">
2602: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2603: <td bgcolor="$tabbg" align="right">
2604: <font size="2" face="Arial, Helvetica, sans-serif">
2605: $ENV{'environment.firstname'}
2606: $ENV{'environment.middlename'}
2607: $ENV{'environment.lastname'}
2608: $ENV{'environment.generation'}
2609: </font>
2610: </td>
2611: </tr>
2612: <tr><td bgcolor="$tabbg" align="right">
2613: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2614: </td></tr>
2615: <tr>
2616: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2617: </table><br />
2618: ENDBODY
2619: }
2620:
2621: ###############################################
2622:
2623: =pod
2624:
2625: =item get_users_function
2626:
2627: Used by &bodytag to determine the current users primary role.
2628: Returns either 'student','coordinator','admin', or 'author'.
2629:
2630: =cut
2631:
2632: ###############################################
2633: sub get_users_function {
2634: my $function = 'student';
2635: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2636: $function='coordinator';
2637: }
2638: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2639: $function='admin';
2640: }
2641: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2642: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2643: $function='author';
2644: }
2645: return $function;
2646: }
2647:
2648: ###############################################
2649:
2650: sub get_posted_cgi {
2651: my $r=shift;
2652:
2653: my $buffer;
2654:
2655: $r->read($buffer,$r->header_in('Content-length'),0);
2656: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2657: my @pairs=split(/&/,$buffer);
2658: my $pair;
2659: foreach $pair (@pairs) {
2660: my ($name,$value) = split(/=/,$pair);
2661: $value =~ tr/+/ /;
2662: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2663: $name =~ tr/+/ /;
2664: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2665: &add_to_env("form.$name",$value);
2666: }
2667: } else {
2668: my $contentsep=$1;
2669: my @lines = split (/\n/,$buffer);
2670: my $name='';
2671: my $value='';
2672: my $fname='';
2673: my $fmime='';
2674: my $i;
2675: for ($i=0;$i<=$#lines;$i++) {
2676: if ($lines[$i]=~/^$contentsep/) {
2677: if ($name) {
2678: chomp($value);
2679: if ($fname) {
2680: $ENV{"form.$name.filename"}=$fname;
2681: $ENV{"form.$name.mimetype"}=$fmime;
2682: } else {
2683: $value=~s/\s+$//s;
2684: }
2685: &add_to_env("form.$name",$value);
2686: }
2687: if ($i<$#lines) {
2688: $i++;
2689: $lines[$i]=~
2690: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2691: $name=$1;
2692: $value='';
2693: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2694: $fname=$1;
2695: if
2696: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2697: $fmime=$1;
2698: $i++;
2699: } else {
2700: $fmime='';
2701: }
2702: } else {
2703: $fname='';
2704: $fmime='';
2705: }
2706: $i++;
2707: }
2708: } else {
2709: $value.=$lines[$i]."\n";
2710: }
2711: }
2712: }
2713: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2714: $r->method_number(M_GET);
2715: $r->method('GET');
2716: $r->headers_in->unset('Content-length');
2717: }
2718:
2719: =pod
2720:
2721: =item * get_unprocessed_cgi($query,$possible_names)
2722:
2723: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2724: $query. The parameters listed in $possible_names (an array reference),
2725: will be set in $ENV{'form.name'} if they do not already exist.
2726:
2727: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2728: $possible_names is an ref to an array of form element names. As an example:
2729: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2730: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2731:
2732: =cut
2733:
2734: sub get_unprocessed_cgi {
2735: my ($query,$possible_names)= @_;
2736: # $Apache::lonxml::debug=1;
2737: foreach (split(/&/,$query)) {
2738: my ($name, $value) = split(/=/,$_);
2739: $name = &Apache::lonnet::unescape($name);
2740: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2741: $value =~ tr/+/ /;
2742: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2743: &Apache::lonxml::debug("Seting :$name: to :$value:");
2744: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2745: }
2746: }
2747: }
2748:
2749: =pod
2750:
2751: =item * cacheheader()
2752:
2753: returns cache-controlling header code
2754:
2755: =cut
2756:
2757: sub cacheheader {
2758: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2759: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2760: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2761: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2762: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2763: return $output;
2764: }
2765:
2766: =pod
2767:
2768: =item * no_cache($r)
2769:
2770: specifies header code to not have cache
2771:
2772: =cut
2773:
2774: sub no_cache {
2775: my ($r) = @_;
2776: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
2777: $ENV{'request.method'} ne 'GET') { return ''; }
2778: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
2779: $r->no_cache(1);
2780: $r->header_out("Expires" => $date);
2781: $r->header_out("Pragma" => "no-cache");
2782: }
2783:
2784: sub content_type {
2785: my ($r,$type,$charset) = @_;
2786: unless ($charset) {
2787: $charset=&Apache::lonlocal::current_encoding;
2788: }
2789: if ($charset) { $type.='; charset='.$charset; }
2790: if ($r) {
2791: $r->content_type($type);
2792: } else {
2793: print("Content-type: $type\n\n");
2794: }
2795: }
2796:
2797: =pod
2798:
2799: =item * add_to_env($name,$value)
2800:
2801: adds $name to the %ENV hash with value
2802: $value, if $name already exists, the entry is converted to an array
2803: reference and $value is added to the array.
2804:
2805: =cut
2806:
2807: sub add_to_env {
2808: my ($name,$value)=@_;
2809: if (defined($ENV{$name})) {
2810: if (ref($ENV{$name})) {
2811: #already have multiple values
2812: push(@{ $ENV{$name} },$value);
2813: } else {
2814: #first time seeing multiple values, convert hash entry to an arrayref
2815: my $first=$ENV{$name};
2816: undef($ENV{$name});
2817: push(@{ $ENV{$name} },$first,$value);
2818: }
2819: } else {
2820: $ENV{$name}=$value;
2821: }
2822: }
2823:
2824: =pod
2825:
2826: =item * get_env_multiple($name)
2827:
2828: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2829: values may be defined and end up as an array ref.
2830:
2831: returns an array of values
2832:
2833: =cut
2834:
2835: sub get_env_multiple {
2836: my ($name) = @_;
2837: my @values;
2838: if (defined($ENV{$name})) {
2839: # exists is it an array
2840: if (ref($ENV{$name})) {
2841: @values=@{ $ENV{$name} };
2842: } else {
2843: $values[0]=$ENV{$name};
2844: }
2845: }
2846: return(@values);
2847: }
2848:
2849:
2850: =pod
2851:
2852: =back
2853:
2854: =head1 CSV Upload/Handling functions
2855:
2856: =over 4
2857:
2858: =item * upfile_store($r)
2859:
2860: Store uploaded file, $r should be the HTTP Request object,
2861: needs $ENV{'form.upfile'}
2862: returns $datatoken to be put into hidden field
2863:
2864: =cut
2865:
2866: sub upfile_store {
2867: my $r=shift;
2868: $ENV{'form.upfile'}=~s/\r/\n/gs;
2869: $ENV{'form.upfile'}=~s/\f/\n/gs;
2870: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2871: $ENV{'form.upfile'}=~s/\n+$//gs;
2872:
2873: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2874: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2875: {
2876: my $datafile = $r->dir_config('lonDaemons').
2877: '/tmp/'.$datatoken.'.tmp';
2878: if ( open(my $fh,">$datafile") ) {
2879: print $fh $ENV{'form.upfile'};
2880: close($fh);
2881: }
2882: }
2883: return $datatoken;
2884: }
2885:
2886: =pod
2887:
2888: =item * load_tmp_file($r)
2889:
2890: Load uploaded file from tmp, $r should be the HTTP Request object,
2891: needs $ENV{'form.datatoken'},
2892: sets $ENV{'form.upfile'} to the contents of the file
2893:
2894: =cut
2895:
2896: sub load_tmp_file {
2897: my $r=shift;
2898: my @studentdata=();
2899: {
2900: my $studentfile = $r->dir_config('lonDaemons').
2901: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2902: if ( open(my $fh,"<$studentfile") ) {
2903: @studentdata=<$fh>;
2904: close($fh);
2905: }
2906: }
2907: $ENV{'form.upfile'}=join('',@studentdata);
2908: }
2909:
2910: =pod
2911:
2912: =item * upfile_record_sep()
2913:
2914: Separate uploaded file into records
2915: returns array of records,
2916: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2917:
2918: =cut
2919:
2920: sub upfile_record_sep {
2921: if ($ENV{'form.upfiletype'} eq 'xml') {
2922: } else {
2923: return split(/\n/,$ENV{'form.upfile'});
2924: }
2925: }
2926:
2927: =pod
2928:
2929: =item * record_sep($record)
2930:
2931: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2932:
2933: =cut
2934:
2935: sub record_sep {
2936: my $record=shift;
2937: my %components=();
2938: if ($ENV{'form.upfiletype'} eq 'xml') {
2939: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2940: my $i=0;
2941: foreach (split(/\s+/,$record)) {
2942: my $field=$_;
2943: $field=~s/^(\"|\')//;
2944: $field=~s/(\"|\')$//;
2945: $components{$i}=$field;
2946: $i++;
2947: }
2948: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2949: my $i=0;
2950: foreach (split(/\t/,$record)) {
2951: my $field=$_;
2952: $field=~s/^(\"|\')//;
2953: $field=~s/(\"|\')$//;
2954: $components{$i}=$field;
2955: $i++;
2956: }
2957: } else {
2958: my @allfields=split(/\,/,$record);
2959: my $i=0;
2960: my $j;
2961: for ($j=0;$j<=$#allfields;$j++) {
2962: my $field=$allfields[$j];
2963: if ($field=~/^\s*(\"|\')/) {
2964: my $delimiter=$1;
2965: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2966: $j++;
2967: $field.=','.$allfields[$j];
2968: }
2969: $field=~s/^\s*$delimiter//;
2970: $field=~s/$delimiter\s*$//;
2971: }
2972: $components{$i}=$field;
2973: $i++;
2974: }
2975: }
2976: return %components;
2977: }
2978:
2979: ######################################################
2980: ######################################################
2981:
2982: =pod
2983:
2984: =item * upfile_select_html()
2985:
2986: Return HTML code to select a file from the users machine and specify
2987: the file type.
2988:
2989: =cut
2990:
2991: ######################################################
2992: ######################################################
2993: sub upfile_select_html {
2994: my %Types = (
2995: csv => &mt('CSV (comma separated values, spreadsheet)'),
2996: space => &mt('Space separated'),
2997: tab => &mt('Tabulator separated'),
2998: # xml => &mt('HTML/XML'),
2999: );
3000: my $Str = '<input type="file" name="upfile" size="50" />'.
3001: '<br />Type: <select name="upfiletype">';
3002: foreach my $type (sort(keys(%Types))) {
3003: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3004: }
3005: $Str .= "</select>\n";
3006: return $Str;
3007: }
3008:
3009: ######################################################
3010: ######################################################
3011:
3012: =pod
3013:
3014: =item * csv_print_samples($r,$records)
3015:
3016: Prints a table of sample values from each column uploaded $r is an
3017: Apache Request ref, $records is an arrayref from
3018: &Apache::loncommon::upfile_record_sep
3019:
3020: =cut
3021:
3022: ######################################################
3023: ######################################################
3024: sub csv_print_samples {
3025: my ($r,$records) = @_;
3026: my (%sone,%stwo,%sthree);
3027: %sone=&record_sep($$records[0]);
3028: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3029: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3030: #
3031: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3032: foreach (sort({$a <=> $b} keys(%sone))) {
3033: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3034: $r->print('</tr>');
3035: foreach my $hash (\%sone,\%stwo,\%sthree) {
3036: $r->print('<tr>');
3037: foreach (sort({$a <=> $b} keys(%sone))) {
3038: $r->print('<td>');
3039: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3040: $r->print('</td>');
3041: }
3042: $r->print('</tr>');
3043: }
3044: $r->print('</tr></table><br />'."\n");
3045: }
3046:
3047: ######################################################
3048: ######################################################
3049:
3050: =pod
3051:
3052: =item * csv_print_select_table($r,$records,$d)
3053:
3054: Prints a table to create associations between values and table columns.
3055:
3056: $r is an Apache Request ref,
3057: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3058: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3059:
3060: =cut
3061:
3062: ######################################################
3063: ######################################################
3064: sub csv_print_select_table {
3065: my ($r,$records,$d) = @_;
3066: my $i=0;my %sone;
3067: %sone=&record_sep($$records[0]);
3068: $r->print(&mt('Associate columns with student attributes.')."\n".
3069: '<table border="2"><tr>'.
3070: '<th>'.&mt('Attribute').'</th>'.
3071: '<th>'.&mt('Column').'</th></tr>'."\n");
3072: foreach (@$d) {
3073: my ($value,$display,$defaultcol)=@{ $_ };
3074: $r->print('<tr><td>'.$display.'</td>');
3075:
3076: $r->print('<td><select name=f'.$i.
3077: ' onchange="javascript:flip(this.form,'.$i.');">');
3078: $r->print('<option value="none"></option>');
3079: foreach (sort({$a <=> $b} keys(%sone))) {
3080: $r->print('<option value="'.$_.'"'.
3081: ($_ eq $defaultcol ? ' selected ' : '').
3082: '>Column '.($_+1).'</option>');
3083: }
3084: $r->print('</select></td></tr>'."\n");
3085: $i++;
3086: }
3087: $i--;
3088: return $i;
3089: }
3090:
3091: ######################################################
3092: ######################################################
3093:
3094: =pod
3095:
3096: =item * csv_samples_select_table($r,$records,$d)
3097:
3098: Prints a table of sample values from the upload and can make associate samples to internal names.
3099:
3100: $r is an Apache Request ref,
3101: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3102: $d is an array of 2 element arrays (internal name, displayed name)
3103:
3104: =cut
3105:
3106: ######################################################
3107: ######################################################
3108: sub csv_samples_select_table {
3109: my ($r,$records,$d) = @_;
3110: my %sone; my %stwo; my %sthree;
3111: my $i=0;
3112: #
3113: $r->print('<table border=2><tr><th>'.
3114: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3115: %sone=&record_sep($$records[0]);
3116: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3117: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3118: #
3119: foreach (sort keys %sone) {
3120: $r->print('<tr><td><select name="f'.$i.'"'.
3121: ' onchange="javascript:flip(this.form,'.$i.');">');
3122: foreach (@$d) {
3123: my ($value,$display,$defaultcol)=@{ $_ };
3124: $r->print('<option value="'.$value.'"'.
3125: ($i eq $defaultcol ? ' selected ':'').'>'.
3126: $display.'</option>');
3127: }
3128: $r->print('</select></td><td>');
3129: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3130: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3131: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3132: $r->print('</td></tr>');
3133: $i++;
3134: }
3135: $i--;
3136: return($i);
3137: }
3138:
3139: ######################################################
3140: ######################################################
3141:
3142: =pod
3143:
3144: =item clean_excel_name($name)
3145:
3146: Returns a replacement for $name which does not contain any illegal characters.
3147:
3148: =cut
3149:
3150: ######################################################
3151: ######################################################
3152: sub clean_excel_name {
3153: my ($name) = @_;
3154: $name =~ s/[:\*\?\/\\]//g;
3155: if (length($name) > 31) {
3156: $name = substr($name,0,31);
3157: }
3158: return $name;
3159: }
3160:
3161: =pod
3162:
3163: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3164:
3165: Returns either 1 or undef
3166:
3167: 1 if the part is to be hidden, undef if it is to be shown
3168:
3169: Arguments are:
3170:
3171: $id the id of the part to be checked
3172: $symb, optional the symb of the resource to check
3173: $udom, optional the domain of the user to check for
3174: $uname, optional the username of the user to check for
3175:
3176: =cut
3177:
3178: sub check_if_partid_hidden {
3179: my ($id,$symb,$udom,$uname) = @_;
3180: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3181: $symb,$udom,$uname);
3182: my $truth=1;
3183: #if the string starts with !, then the list is the list to show not hide
3184: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3185: my @hiddenlist=split(/,/,$hiddenparts);
3186: foreach my $checkid (@hiddenlist) {
3187: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3188: }
3189: return !$truth;
3190: }
3191:
3192:
3193: ############################################################
3194: ############################################################
3195:
3196: =pod
3197:
3198: =back
3199:
3200: =head1 cgi-bin script and graphing routines
3201:
3202: =over 4
3203:
3204: =item get_cgi_id
3205:
3206: Inputs: none
3207:
3208: Returns an id which can be used to pass environment variables
3209: to various cgi-bin scripts. These environment variables will
3210: be removed from the users environment after a given time by
3211: the routine &Apache::lonnet::transfer_profile_to_env.
3212:
3213: =cut
3214:
3215: ############################################################
3216: ############################################################
3217: my $uniq=0;
3218: sub get_cgi_id {
3219: $uniq=($uniq+1)%100000;
3220: return (time.'_'.$uniq);
3221: }
3222:
3223: ############################################################
3224: ############################################################
3225:
3226: =pod
3227:
3228: =item DrawBarGraph
3229:
3230: Facilitates the plotting of data in a (stacked) bar graph.
3231: Puts plot definition data into the users environment in order for
3232: graph.png to plot it. Returns an <img> tag for the plot.
3233: The bars on the plot are labeled '1','2',...,'n'.
3234:
3235: Inputs:
3236:
3237: =over 4
3238:
3239: =item $Title: string, the title of the plot
3240:
3241: =item $xlabel: string, text describing the X-axis of the plot
3242:
3243: =item $ylabel: string, text describing the Y-axis of the plot
3244:
3245: =item $Max: scalar, the maximum Y value to use in the plot
3246: If $Max is < any data point, the graph will not be rendered.
3247:
3248: =item $colors: array ref holding the colors to be used for the data sets when
3249: they are plotted. If undefined, default values will be used.
3250:
3251: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3252:
3253: =item @Values: An array of array references. Each array reference holds data
3254: to be plotted in a stacked bar chart.
3255:
3256: =back
3257:
3258: Returns:
3259:
3260: An <img> tag which references graph.png and the appropriate identifying
3261: information for the plot.
3262:
3263: =cut
3264:
3265: ############################################################
3266: ############################################################
3267: sub DrawBarGraph {
3268: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3269: #
3270: if (! defined($colors)) {
3271: $colors = ['#33ff00',
3272: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3273: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3274: ];
3275: }
3276: #
3277: my $identifier = &get_cgi_id();
3278: my $id = 'cgi.'.$identifier;
3279: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3280: return '';
3281: }
3282: my $NumBars = scalar(@{$Values[0]});
3283: my %ValuesHash;
3284: my $NumSets=1;
3285: foreach my $array (@Values) {
3286: next if (! ref($array));
3287: $ValuesHash{$id.'.data.'.$NumSets++} =
3288: join(',',@$array);
3289: }
3290: #
3291: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3292: if ($NumBars < 10) {
3293: $width = 120+$NumBars*15;
3294: $xskip = 1;
3295: $bar_width = 15;
3296: } elsif ($NumBars <= 25) {
3297: $width = 120+$NumBars*11;
3298: $xskip = 5;
3299: $bar_width = 8;
3300: } elsif ($NumBars <= 50) {
3301: $width = 120+$NumBars*8;
3302: $xskip = 5;
3303: $bar_width = 4;
3304: } else {
3305: $width = 120+$NumBars*8;
3306: $xskip = 5;
3307: $bar_width = 4;
3308: }
3309: #
3310: my @Labels;
3311: if (defined($labels)) {
3312: @Labels = @$labels;
3313: } else {
3314: for (my $i=0;$i<@{$Values[0]};$i++) {
3315: push (@Labels,$i+1);
3316: }
3317: }
3318: #
3319: $Max = 1 if ($Max < 1);
3320: if ( int($Max) < $Max ) {
3321: $Max++;
3322: $Max = int($Max);
3323: }
3324: $Title = '' if (! defined($Title));
3325: $xlabel = '' if (! defined($xlabel));
3326: $ylabel = '' if (! defined($ylabel));
3327: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3328: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3329: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3330: $ValuesHash{$id.'.y_max_value'} = $Max;
3331: $ValuesHash{$id.'.NumBars'} = $NumBars;
3332: $ValuesHash{$id.'.NumSets'} = $NumSets;
3333: $ValuesHash{$id.'.PlotType'} = 'bar';
3334: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3335: $ValuesHash{$id.'.height'} = $height;
3336: $ValuesHash{$id.'.width'} = $width;
3337: $ValuesHash{$id.'.xskip'} = $xskip;
3338: $ValuesHash{$id.'.bar_width'} = $bar_width;
3339: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3340: #
3341: &Apache::lonnet::appenv(%ValuesHash);
3342: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3343: }
3344:
3345: ############################################################
3346: ############################################################
3347:
3348: =pod
3349:
3350: =item DrawXYGraph
3351:
3352: Facilitates the plotting of data in an XY graph.
3353: Puts plot definition data into the users environment in order for
3354: graph.png to plot it. Returns an <img> tag for the plot.
3355:
3356: Inputs:
3357:
3358: =over 4
3359:
3360: =item $Title: string, the title of the plot
3361:
3362: =item $xlabel: string, text describing the X-axis of the plot
3363:
3364: =item $ylabel: string, text describing the Y-axis of the plot
3365:
3366: =item $Max: scalar, the maximum Y value to use in the plot
3367: If $Max is < any data point, the graph will not be rendered.
3368:
3369: =item $colors: Array ref containing the hex color codes for the data to be
3370: plotted in. If undefined, default values will be used.
3371:
3372: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3373:
3374: =item $Ydata: Array ref containing Array refs.
3375: Each of the contained arrays will be plotted as a separate curve.
3376:
3377: =item %Values: hash indicating or overriding any default values which are
3378: passed to graph.png.
3379: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3380:
3381: =back
3382:
3383: Returns:
3384:
3385: An <img> tag which references graph.png and the appropriate identifying
3386: information for the plot.
3387:
3388: =cut
3389:
3390: ############################################################
3391: ############################################################
3392: sub DrawXYGraph {
3393: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3394: #
3395: # Create the identifier for the graph
3396: my $identifier = &get_cgi_id();
3397: my $id = 'cgi.'.$identifier;
3398: #
3399: $Title = '' if (! defined($Title));
3400: $xlabel = '' if (! defined($xlabel));
3401: $ylabel = '' if (! defined($ylabel));
3402: my %ValuesHash =
3403: (
3404: $id.'.title' => &Apache::lonnet::escape($Title),
3405: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3406: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3407: $id.'.y_max_value'=> $Max,
3408: $id.'.labels' => join(',',@$Xlabels),
3409: $id.'.PlotType' => 'XY',
3410: );
3411: #
3412: if (defined($colors) && ref($colors) eq 'ARRAY') {
3413: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3414: }
3415: #
3416: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3417: return '';
3418: }
3419: my $NumSets=1;
3420: foreach my $array (@{$Ydata}){
3421: next if (! ref($array));
3422: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3423: }
3424: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3425: #
3426: # Deal with other parameters
3427: while (my ($key,$value) = each(%Values)) {
3428: $ValuesHash{$id.'.'.$key} = $value;
3429: }
3430: #
3431: &Apache::lonnet::appenv(%ValuesHash);
3432: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3433: }
3434:
3435: ############################################################
3436: ############################################################
3437:
3438: =pod
3439:
3440: =item DrawXYYGraph
3441:
3442: Facilitates the plotting of data in an XY graph with two Y axes.
3443: Puts plot definition data into the users environment in order for
3444: graph.png to plot it. Returns an <img> tag for the plot.
3445:
3446: Inputs:
3447:
3448: =over 4
3449:
3450: =item $Title: string, the title of the plot
3451:
3452: =item $xlabel: string, text describing the X-axis of the plot
3453:
3454: =item $ylabel: string, text describing the Y-axis of the plot
3455:
3456: =item $colors: Array ref containing the hex color codes for the data to be
3457: plotted in. If undefined, default values will be used.
3458:
3459: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3460:
3461: =item $Ydata1: The first data set
3462:
3463: =item $Min1: The minimum value of the left Y-axis
3464:
3465: =item $Max1: The maximum value of the left Y-axis
3466:
3467: =item $Ydata2: The second data set
3468:
3469: =item $Min2: The minimum value of the right Y-axis
3470:
3471: =item $Max2: The maximum value of the left Y-axis
3472:
3473: =item %Values: hash indicating or overriding any default values which are
3474: passed to graph.png.
3475: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3476:
3477: =back
3478:
3479: Returns:
3480:
3481: An <img> tag which references graph.png and the appropriate identifying
3482: information for the plot.
3483:
3484: =cut
3485:
3486: ############################################################
3487: ############################################################
3488: sub DrawXYYGraph {
3489: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3490: $Ydata2,$Min2,$Max2,%Values)=@_;
3491: #
3492: # Create the identifier for the graph
3493: my $identifier = &get_cgi_id();
3494: my $id = 'cgi.'.$identifier;
3495: #
3496: $Title = '' if (! defined($Title));
3497: $xlabel = '' if (! defined($xlabel));
3498: $ylabel = '' if (! defined($ylabel));
3499: my %ValuesHash =
3500: (
3501: $id.'.title' => &Apache::lonnet::escape($Title),
3502: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3503: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3504: $id.'.labels' => join(',',@$Xlabels),
3505: $id.'.PlotType' => 'XY',
3506: $id.'.NumSets' => 2,
3507: $id.'.two_axes' => 1,
3508: $id.'.y1_max_value' => $Max1,
3509: $id.'.y1_min_value' => $Min1,
3510: $id.'.y2_max_value' => $Max2,
3511: $id.'.y2_min_value' => $Min2,
3512: );
3513: #
3514: if (defined($colors) && ref($colors) eq 'ARRAY') {
3515: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3516: }
3517: #
3518: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3519: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3520: return '';
3521: }
3522: my $NumSets=1;
3523: foreach my $array ($Ydata1,$Ydata2){
3524: next if (! ref($array));
3525: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3526: }
3527: #
3528: # Deal with other parameters
3529: while (my ($key,$value) = each(%Values)) {
3530: $ValuesHash{$id.'.'.$key} = $value;
3531: }
3532: #
3533: &Apache::lonnet::appenv(%ValuesHash);
3534: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3535: }
3536:
3537: ############################################################
3538: ############################################################
3539:
3540: =pod
3541:
3542: =back
3543:
3544: =head1 Statistics helper routines?
3545:
3546: Bad place for them but what the hell.
3547:
3548: =over 4
3549:
3550: =item &chartlink
3551:
3552: Returns a link to the chart for a specific student.
3553:
3554: Inputs:
3555:
3556: =over 4
3557:
3558: =item $linktext: The text of the link
3559:
3560: =item $sname: The students username
3561:
3562: =item $sdomain: The students domain
3563:
3564: =back
3565:
3566: =back
3567:
3568: =cut
3569:
3570: ############################################################
3571: ############################################################
3572: sub chartlink {
3573: my ($linktext, $sname, $sdomain) = @_;
3574: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3575: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3576: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3577: '">'.$linktext.'</a>';
3578: }
3579:
3580: #######################################################
3581: #######################################################
3582:
3583: =pod
3584:
3585: =head1 Course Environment Routines
3586:
3587: =over 4
3588:
3589: =item &restore_course_settings
3590:
3591: =item &store_course_settings
3592:
3593: Restores/Store indicated form parameters from the course environment.
3594: Will not overwrite existing values of the form parameters.
3595:
3596: Inputs:
3597: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3598:
3599: a hash ref describing the data to be stored. For example:
3600:
3601: %Save_Parameters = ('Status' => 'scalar',
3602: 'chartoutputmode' => 'scalar',
3603: 'chartoutputdata' => 'scalar',
3604: 'Section' => 'array',
3605: 'StudentData' => 'array',
3606: 'Maps' => 'array');
3607:
3608: Returns: both routines return nothing
3609:
3610: =cut
3611:
3612: #######################################################
3613: #######################################################
3614: sub store_course_settings {
3615: # save to the environment
3616: # appenv the same items, just to be safe
3617: my $courseid = $ENV{'request.course.id'};
3618: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3619: my ($prefix,$Settings) = @_;
3620: my %SaveHash;
3621: my %AppHash;
3622: while (my ($setting,$type) = each(%$Settings)) {
3623: my $basename = 'internal.'.$prefix.'.'.$setting;
3624: my $envname = 'course.'.$courseid.'.'.$basename;
3625: if (exists($ENV{'form.'.$setting})) {
3626: # Save this value away
3627: if ($type eq 'scalar' &&
3628: (! exists($ENV{$envname}) ||
3629: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3630: $SaveHash{$basename} = $ENV{'form.'.$setting};
3631: $AppHash{$envname} = $ENV{'form.'.$setting};
3632: } elsif ($type eq 'array') {
3633: my $stored_form;
3634: if (ref($ENV{'form.'.$setting})) {
3635: $stored_form = join(',',
3636: map {
3637: &Apache::lonnet::escape($_);
3638: } sort(@{$ENV{'form.'.$setting}}));
3639: } else {
3640: $stored_form =
3641: &Apache::lonnet::escape($ENV{'form.'.$setting});
3642: }
3643: # Determine if the array contents are the same.
3644: if ($stored_form ne $ENV{$envname}) {
3645: $SaveHash{$basename} = $stored_form;
3646: $AppHash{$envname} = $stored_form;
3647: }
3648: }
3649: }
3650: }
3651: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3652: $coursedom,
3653: $ENV{'course.'.$courseid.'.num'});
3654: if ($put_result !~ /^(ok|delayed)/) {
3655: &Apache::lonnet::logthis('unable to save form parameters, '.
3656: 'got error:'.$put_result);
3657: }
3658: # Make sure these settings stick around in this session, too
3659: &Apache::lonnet::appenv(%AppHash);
3660: return;
3661: }
3662:
3663: sub restore_course_settings {
3664: my $courseid = $ENV{'request.course.id'};
3665: my ($prefix,$Settings) = @_;
3666: while (my ($setting,$type) = each(%$Settings)) {
3667: next if (exists($ENV{'form.'.$setting}));
3668: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3669: '.'.$setting;
3670: if (exists($ENV{$envname})) {
3671: if ($type eq 'scalar') {
3672: $ENV{'form.'.$setting} = $ENV{$envname};
3673: } elsif ($type eq 'array') {
3674: $ENV{'form.'.$setting} = [
3675: map {
3676: &Apache::lonnet::unescape($_);
3677: } split(',',$ENV{$envname})
3678: ];
3679: }
3680: }
3681: }
3682: }
3683:
3684: ############################################################
3685: ############################################################
3686:
3687: sub propath {
3688: my ($udom,$uname)=@_;
3689: $udom=~s/\W//g;
3690: $uname=~s/\W//g;
3691: my $subdir=$uname.'__';
3692: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3693: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3694: return $proname;
3695: }
3696:
3697: sub icon {
3698: my ($file)=@_;
3699: my $curfext = (split(/\./,$file))[-1];
3700: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3701: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3702: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3703: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3704: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3705: $curfext.".gif") {
3706: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3707: $curfext.".gif";
3708: }
3709: }
3710: return $iconname;
3711: }
3712:
3713: sub lonhttpdurl {
3714: my ($url)=@_;
3715: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
3716: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
3717: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
3718: }
3719:
3720: sub connection_aborted {
3721: my ($r)=@_;
3722: $r->print(" ");$r->rflush();
3723: my $c = $r->connection;
3724: return $c->aborted();
3725: }
3726:
3727: =pod
3728:
3729: =back
3730:
3731: =cut
3732:
3733: 1;
3734: __END__;
3735:
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