1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.219 2004/10/12 23:26:48 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 $resurl=&lastresurl();
256: return <<END;
257: // <!-- BEGIN LON-CAPA Internal
258: var editbrowser = null;
259: function openbrowser(formname,elementname,only,omit,titleelement) {
260: var url = '$resurl/?';
261: if (editbrowser == null) {
262: url += 'launch=1&';
263: }
264: url += 'catalogmode=interactive&';
265: url += 'mode=$mode&';
266: url += 'form=' + formname + '&';
267: if (only != null) {
268: url += 'only=' + only + '&';
269: } else {
270: url += 'only=&';
271: }
272: if (omit != null) {
273: url += 'omit=' + omit + '&';
274: } else {
275: url += 'omit=&';
276: }
277: if (titleelement != null) {
278: url += 'titleelement=' + titleelement + '&';
279: } else {
280: url += 'titleelement=&';
281: }
282: url += 'element=' + elementname + '';
283: var title = 'Browser';
284: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
285: options += ',width=700,height=600';
286: editbrowser = open(url,title,options,'1');
287: editbrowser.focus();
288: }
289: var editsearcher;
290: function opensearcher(formname,elementname,titleelement) {
291: var url = '/adm/searchcat?';
292: if (editsearcher == null) {
293: url += 'launch=1&';
294: }
295: url += 'catalogmode=interactive&';
296: url += 'mode=$mode&';
297: url += 'form=' + formname + '&';
298: if (titleelement != null) {
299: url += 'titleelement=' + titleelement + '&';
300: } else {
301: url += 'titleelement=&';
302: }
303: url += 'element=' + elementname + '';
304: var title = 'Search';
305: var options = 'scrollbars=1,resizable=1,menubar=0';
306: options += ',width=700,height=600';
307: editsearcher = open(url,title,options,'1');
308: editsearcher.focus();
309: }
310: // END LON-CAPA Internal -->
311: END
312: }
313:
314: sub lastresurl {
315: if ($ENV{'environment.lastresurl'}) {
316: return $ENV{'environment.lastresurl'}
317: } else {
318: return '/res';
319: }
320: }
321:
322: sub storeresurl {
323: my $resurl=&Apache::lonnet::clutter(shift);
324: unless ($resurl=~/^\/res/) { return 0; }
325: $resurl=~s/\/$//;
326: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
327: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
328: return 1;
329: }
330:
331: sub studentbrowser_javascript {
332: unless (
333: (($ENV{'request.course.id'}) &&
334: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
335: || ($ENV{'request.role'}=~/^(au|dc|su)/)
336: ) { return ''; }
337: return (<<'ENDSTDBRW');
338: <script type="text/javascript" language="Javascript" >
339: var stdeditbrowser;
340: function openstdbrowser(formname,uname,udom,roleflag) {
341: var url = '/adm/pickstudent?';
342: var filter;
343: eval('filter=document.'+formname+'.'+uname+'.value;');
344: if (filter != null) {
345: if (filter != '') {
346: url += 'filter='+filter+'&';
347: }
348: }
349: url += 'form=' + formname + '&unameelement='+uname+
350: '&udomelement='+udom;
351: if (roleflag) { url+="&roles=1"; }
352: var title = 'Student_Browser';
353: var options = 'scrollbars=1,resizable=1,menubar=0';
354: options += ',width=700,height=600';
355: stdeditbrowser = open(url,title,options,'1');
356: stdeditbrowser.focus();
357: }
358: </script>
359: ENDSTDBRW
360: }
361:
362: sub selectstudent_link {
363: my ($form,$unameele,$udomele)=@_;
364: if ($ENV{'request.course.id'}) {
365: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
366: return '';
367: }
368: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
369: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
370: }
371: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
372: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
373: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
374: }
375: return '';
376: }
377:
378: sub coursebrowser_javascript {
379: my ($domainfilter)=@_;
380: return (<<ENDSTDBRW);
381: <script type="text/javascript" language="Javascript" >
382: var stdeditbrowser;
383: function opencrsbrowser(formname,uname,udom,desc) {
384: var url = '/adm/pickcourse?';
385: var filter;
386: if (filter != null) {
387: if (filter != '') {
388: url += 'filter='+filter+'&';
389: }
390: }
391: var domainfilter='$domainfilter';
392: if (domainfilter != null) {
393: if (domainfilter != '') {
394: url += 'domainfilter='+domainfilter+'&';
395: }
396: }
397: url += 'form=' + formname + '&cnumelement='+uname+
398: '&cdomelement='+udom+
399: '&cnameelement='+desc;
400: var title = 'Course_Browser';
401: var options = 'scrollbars=1,resizable=1,menubar=0';
402: options += ',width=700,height=600';
403: stdeditbrowser = open(url,title,options,'1');
404: stdeditbrowser.focus();
405: }
406: </script>
407: ENDSTDBRW
408: }
409:
410: sub selectcourse_link {
411: my ($form,$unameele,$udomele,$desc)=@_;
412: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
413: '","'.$udomele.'","'.$desc.'");'."'>".&mt('Select Course')."</a>";
414: }
415:
416: =pod
417:
418: =item * linked_select_forms(...)
419:
420: linked_select_forms returns a string containing a <script></script> block
421: and html for two <select> menus. The select menus will be linked in that
422: changing the value of the first menu will result in new values being placed
423: in the second menu. The values in the select menu will appear in alphabetical
424: order.
425:
426: linked_select_forms takes the following ordered inputs:
427:
428: =over 4
429:
430: =item * $formname, the name of the <form> tag
431:
432: =item * $middletext, the text which appears between the <select> tags
433:
434: =item * $firstdefault, the default value for the first menu
435:
436: =item * $firstselectname, the name of the first <select> tag
437:
438: =item * $secondselectname, the name of the second <select> tag
439:
440: =item * $hashref, a reference to a hash containing the data for the menus.
441:
442: =back
443:
444: Below is an example of such a hash. Only the 'text', 'default', and
445: 'select2' keys must appear as stated. keys(%menu) are the possible
446: values for the first select menu. The text that coincides with the
447: first menu value is given in $menu{$choice1}->{'text'}. The values
448: and text for the second menu are given in the hash pointed to by
449: $menu{$choice1}->{'select2'}.
450:
451: my %menu = ( A1 => { text =>"Choice A1" ,
452: default => "B3",
453: select2 => {
454: B1 => "Choice B1",
455: B2 => "Choice B2",
456: B3 => "Choice B3",
457: B4 => "Choice B4"
458: }
459: },
460: A2 => { text =>"Choice A2" ,
461: default => "C2",
462: select2 => {
463: C1 => "Choice C1",
464: C2 => "Choice C2",
465: C3 => "Choice C3"
466: }
467: },
468: A3 => { text =>"Choice A3" ,
469: default => "D6",
470: select2 => {
471: D1 => "Choice D1",
472: D2 => "Choice D2",
473: D3 => "Choice D3",
474: D4 => "Choice D4",
475: D5 => "Choice D5",
476: D6 => "Choice D6",
477: D7 => "Choice D7"
478: }
479: }
480: );
481:
482: =cut
483:
484: sub linked_select_forms {
485: my ($formname,
486: $middletext,
487: $firstdefault,
488: $firstselectname,
489: $secondselectname,
490: $hashref
491: ) = @_;
492: my $second = "document.$formname.$secondselectname";
493: my $first = "document.$formname.$firstselectname";
494: # output the javascript to do the changing
495: my $result = '';
496: $result.="<script type=\"text/javascript\">\n";
497: $result.="var select2data = new Object();\n";
498: $" = '","';
499: my $debug = '';
500: foreach my $s1 (sort(keys(%$hashref))) {
501: $result.="select2data.d_$s1 = new Object();\n";
502: $result.="select2data.d_$s1.def = new String('".
503: $hashref->{$s1}->{'default'}."');\n";
504: $result.="select2data.d_$s1.values = new Array(";
505: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
506: $result.="\"@s2values\");\n";
507: $result.="select2data.d_$s1.texts = new Array(";
508: my @s2texts;
509: foreach my $value (@s2values) {
510: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
511: }
512: $result.="\"@s2texts\");\n";
513: }
514: $"=' ';
515: $result.= <<"END";
516:
517: function select1_changed() {
518: // Determine new choice
519: var newvalue = "d_" + $first.value;
520: // update select2
521: var values = select2data[newvalue].values;
522: var texts = select2data[newvalue].texts;
523: var select2def = select2data[newvalue].def;
524: var i;
525: // out with the old
526: for (i = 0; i < $second.options.length; i++) {
527: $second.options[i] = null;
528: }
529: // in with the nuclear
530: for (i=0;i<values.length; i++) {
531: $second.options[i] = new Option(values[i]);
532: $second.options[i].value = values[i];
533: $second.options[i].text = texts[i];
534: if (values[i] == select2def) {
535: $second.options[i].selected = true;
536: }
537: }
538: }
539: </script>
540: END
541: # output the initial values for the selection lists
542: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
543: foreach my $value (sort(keys(%$hashref))) {
544: $result.=" <option value=\"$value\" ";
545: $result.=" selected=\"true\" " if ($value eq $firstdefault);
546: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
547: }
548: $result .= "</select>\n";
549: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
550: $result .= $middletext;
551: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
552: my $seconddefault = $hashref->{$firstdefault}->{'default'};
553: foreach my $value (sort(keys(%select2))) {
554: $result.=" <option value=\"$value\" ";
555: $result.=" selected=\"true\" " if ($value eq $seconddefault);
556: $result.=">".&mt($select2{$value})."</option>\n";
557: }
558: $result .= "</select>\n";
559: # return $debug;
560: return $result;
561: } # end of sub linked_select_forms {
562:
563: =pod
564:
565: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
566:
567: Returns a string corresponding to an HTML link to the given help
568: $topic, where $topic corresponds to the name of a .tex file in
569: /home/httpd/html/adm/help/tex, with underscores replaced by
570: spaces.
571:
572: $text will optionally be linked to the same topic, allowing you to
573: link text in addition to the graphic. If you do not want to link
574: text, but wish to specify one of the later parameters, pass an
575: empty string.
576:
577: $stayOnPage is a value that will be interpreted as a boolean. If true,
578: the link will not open a new window. If false, the link will open
579: a new window using Javascript. (Default is false.)
580:
581: $width and $height are optional numerical parameters that will
582: override the width and height of the popped up window, which may
583: be useful for certain help topics with big pictures included.
584:
585: =cut
586:
587: sub help_open_topic {
588: my ($topic, $text, $stayOnPage, $width, $height) = @_;
589: $text = "" if (not defined $text);
590: $stayOnPage = 0 if (not defined $stayOnPage);
591: if ($ENV{'browser.interface'} eq 'textual' ||
592: $ENV{'environment.remote'} eq 'off' ) {
593: $stayOnPage=1;
594: }
595: $width = 350 if (not defined $width);
596: $height = 400 if (not defined $height);
597: my $filename = $topic;
598: $filename =~ s/ /_/g;
599:
600: my $template = "";
601: my $link;
602:
603: $topic=~s/\W/\_/g;
604:
605: if (!$stayOnPage)
606: {
607: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
608: }
609: else
610: {
611: $link = "/adm/help/${filename}.hlp";
612: }
613:
614: # Add the text
615: if ($text ne "")
616: {
617: $template .=
618: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
619: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
620: }
621:
622: # Add the graphic
623: my $title = &mt('Online Help');
624: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
625: $template .= <<"ENDTEMPLATE";
626: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
627: ENDTEMPLATE
628: if ($text ne '') { $template.='</td></tr></table>' };
629: return $template;
630:
631: }
632:
633: # This is a quicky function for Latex cheatsheet editing, since it
634: # appears in at least four places
635: sub helpLatexCheatsheet {
636: my $other = shift;
637: my $addOther = '';
638: if ($other) {
639: $addOther = Apache::loncommon::help_open_topic($other, shift,
640: undef, undef, 600) .
641: '</td><td>';
642: }
643: return '<table><tr><td>'.
644: $addOther .
645: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
646: undef,undef,600)
647: .'</td><td>'.
648: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
649: undef,undef,600)
650: .'</td></tr></table>';
651: }
652:
653: sub help_open_menu {
654: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
655: $text = "" if (not defined $text);
656: $stayOnPage = 0 if (not defined $stayOnPage);
657: if ($ENV{'browser.interface'} eq 'textual' ||
658: $ENV{'environment.remote'} eq 'off' ) {
659: $stayOnPage=1;
660: }
661: $width = 620 if (not defined $width);
662: $height = 600 if (not defined $height);
663: my $link='';
664: my $title = &mt('Get help');
665: my $origurl = $ENV{'REQUEST_URI'};
666: my $timestamp = time;
667: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
668: $$_ = &Apache::lonnet::escape($$_);
669: }
670:
671: if (!$stayOnPage) {
672: $link = "javascript:helpMenu('open')";
673: } else {
674: $link = "javascript:helpMenu('display')";
675: }
676: 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";
677: 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";
678: my $template;
679: if ($text ne "") {
680: $template .=
681: "<table bgcolor='#773311' cellspacing='1' cellpadding='1' border='0'><tr>".
682: "<td bgcolor='#886622'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
683: }
684: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
685: $template .= <<"ENDTEMPLATE";
686: <script type="text/javascript">
687: //<!-- BEGIN LON-CAPA Internal
688: function helpMenu(caller) {
689: if (caller == 'open') {
690: newWindow = window.open("","helpmenu","HEIGHT=$height,WIDTH=$width,resize=yes,scrollbars=yes" )
691: caller = newWindow.document
692: } else {
693: caller = this.document
694: }
695: caller.write("<html><head><title>LON-CAPA Help Menu</title><meta http-equiv='pragma' content='no-cache'></head>")
696: caller.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
697: caller.write("</html>")
698: caller.close()
699: if (caller == newWindow.document) {
700: caller.focus()
701: }
702: }
703: // END LON-CAPA Internal -->
704: </script>
705: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
706: ENDTEMPLATE
707: if ($component_help) {
708: if (!$text) {
709: $template=&help_open_topic($component_help,undef,$stayOnPage,
710: $width,$height).' '.$template;
711: } else {
712: my $help_text;
713: $help_text=&Apache::lonnet::unescape($topic);
714: $template='<table><tr><td>'.
715: &help_open_topic($component_help,$help_text,$stayOnPage,
716: $width,$height).'</td><td>'.$template.
717: '</td></tr></table>';
718: }
719: }
720: if ($text ne '') { $template.='</td></tr></table>' };
721: return $template;
722: }
723:
724: sub help_open_bug {
725: my ($topic, $text, $stayOnPage, $width, $height) = @_;
726: unless ($ENV{'user.adv'}) { return ''; }
727: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
728: $text = "" if (not defined $text);
729: $stayOnPage = 0 if (not defined $stayOnPage);
730: if ($ENV{'browser.interface'} eq 'textual' ||
731: $ENV{'environment.remote'} eq 'off' ) {
732: $stayOnPage=1;
733: }
734: $width = 600 if (not defined $width);
735: $height = 600 if (not defined $height);
736:
737: $topic=~s/\W+/\+/g;
738: my $link='';
739: my $template='';
740: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
741: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
742: if (!$stayOnPage)
743: {
744: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
745: }
746: else
747: {
748: $link = $url;
749: }
750: # Add the text
751: if ($text ne "")
752: {
753: $template .=
754: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
755: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
756: }
757:
758: # Add the graphic
759: my $title = &mt('Report a Bug');
760: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
761: $template .= <<"ENDTEMPLATE";
762: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
763: ENDTEMPLATE
764: if ($text ne '') { $template.='</td></tr></table>' };
765: return $template;
766:
767: }
768:
769: sub help_open_faq {
770: my ($topic, $text, $stayOnPage, $width, $height) = @_;
771: unless ($ENV{'user.adv'}) { return ''; }
772: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
773: $text = "" if (not defined $text);
774: $stayOnPage = 0 if (not defined $stayOnPage);
775: if ($ENV{'browser.interface'} eq 'textual' ||
776: $ENV{'environment.remote'} eq 'off' ) {
777: $stayOnPage=1;
778: }
779: $width = 350 if (not defined $width);
780: $height = 400 if (not defined $height);
781:
782: $topic=~s/\W+/\+/g;
783: my $link='';
784: my $template='';
785: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
786: if (!$stayOnPage)
787: {
788: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
789: }
790: else
791: {
792: $link = $url;
793: }
794:
795: # Add the text
796: if ($text ne "")
797: {
798: $template .=
799: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
800: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
801: }
802:
803: # Add the graphic
804: my $title = &mt('View the FAQ');
805: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
806: $template .= <<"ENDTEMPLATE";
807: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
808: ENDTEMPLATE
809: if ($text ne '') { $template.='</td></tr></table>' };
810: return $template;
811:
812: }
813:
814: ###############################################################
815: ###############################################################
816:
817: =pod
818:
819: =item * csv_translate($text)
820:
821: Translate $text to allow it to be output as a 'comma separated values'
822: format.
823:
824: =cut
825:
826: ###############################################################
827: ###############################################################
828: sub csv_translate {
829: my $text = shift;
830: $text =~ s/\"/\"\"/g;
831: $text =~ s/\n/ /g;
832: return $text;
833: }
834:
835:
836: ###############################################################
837: ###############################################################
838:
839: =pod
840:
841: =item * define_excel_formats
842:
843: Define some commonly used Excel cell formats.
844:
845: Currently supported formats:
846:
847: =over 4
848:
849: =item header
850:
851: =item bold
852:
853: =item h1
854:
855: =item h2
856:
857: =item h3
858:
859: =item date
860:
861: =back
862:
863: Inputs: $workbook
864:
865: Returns: $format, a hash reference.
866:
867: =cut
868:
869: ###############################################################
870: ###############################################################
871: sub define_excel_formats {
872: my ($workbook) = @_;
873: my $format;
874: $format->{'header'} = $workbook->add_format(bold => 1,
875: bottom => 1,
876: align => 'center');
877: $format->{'bold'} = $workbook->add_format(bold=>1);
878: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
879: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
880: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
881: $format->{'date'} = $workbook->add_format(num_format=>
882: 'mm/dd/yyyy hh:mm:ss');
883: return $format;
884: }
885:
886: ###############################################################
887: ###############################################################
888:
889: =pod
890:
891: =item * change_content_javascript():
892:
893: This and the next function allow you to create small sections of an
894: otherwise static HTML page that you can update on the fly with
895: Javascript, even in Netscape 4.
896:
897: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
898: must be written to the HTML page once. It will prove the Javascript
899: function "change(name, content)". Calling the change function with the
900: name of the section
901: you want to update, matching the name passed to C<changable_area>, and
902: the new content you want to put in there, will put the content into
903: that area.
904:
905: B<Note>: Netscape 4 only reserves enough space for the changable area
906: to contain room for the original contents. You need to "make space"
907: for whatever changes you wish to make, and be B<sure> to check your
908: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
909: it's adequate for updating a one-line status display, but little more.
910: This script will set the space to 100% width, so you only need to
911: worry about height in Netscape 4.
912:
913: Modern browsers are much less limiting, and if you can commit to the
914: user not using Netscape 4, this feature may be used freely with
915: pretty much any HTML.
916:
917: =cut
918:
919: sub change_content_javascript {
920: # If we're on Netscape 4, we need to use Layer-based code
921: if ($ENV{'browser.type'} eq 'netscape' &&
922: $ENV{'browser.version'} =~ /^4\./) {
923: return (<<NETSCAPE4);
924: function change(name, content) {
925: doc = document.layers[name+"___escape"].layers[0].document;
926: doc.open();
927: doc.write(content);
928: doc.close();
929: }
930: NETSCAPE4
931: } else {
932: # Otherwise, we need to use semi-standards-compliant code
933: # (technically, "innerHTML" isn't standard but the equivalent
934: # is really scary, and every useful browser supports it
935: return (<<DOMBASED);
936: function change(name, content) {
937: element = document.getElementById(name);
938: element.innerHTML = content;
939: }
940: DOMBASED
941: }
942: }
943:
944: =pod
945:
946: =item * changable_area($name, $origContent):
947:
948: This provides a "changable area" that can be modified on the fly via
949: the Javascript code provided in C<change_content_javascript>. $name is
950: the name you will use to reference the area later; do not repeat the
951: same name on a given HTML page more then once. $origContent is what
952: the area will originally contain, which can be left blank.
953:
954: =cut
955:
956: sub changable_area {
957: my ($name, $origContent) = @_;
958:
959: if ($ENV{'browser.type'} eq 'netscape' &&
960: $ENV{'browser.version'} =~ /^4\./) {
961: # If this is netscape 4, we need to use the Layer tag
962: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
963: } else {
964: return "<span id='$name'>$origContent</span>";
965: }
966: }
967:
968: =pod
969:
970: =back
971:
972: =cut
973:
974: ###############################################################
975: ## Home server <option> list generating code ##
976: ###############################################################
977:
978: =pod
979:
980: =head1 Home Server option list generating code
981:
982: =over 4
983:
984: =item * get_domains()
985:
986: Returns an array containing each of the domains listed in the hosts.tab
987: file.
988:
989: =cut
990:
991: #-------------------------------------------
992: sub get_domains {
993: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
994: my @domains;
995: my %seen;
996: foreach (sort values(%Apache::lonnet::hostdom)) {
997: push (@domains,$_) unless $seen{$_}++;
998: }
999: return @domains;
1000: }
1001:
1002: # ------------------------------------------
1003:
1004: sub domain_select {
1005: my ($name,$value,$multiple)=@_;
1006: my %domains=map {
1007: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1008: } &get_domains;
1009: if ($multiple) {
1010: $domains{''}=&mt('Any domain');
1011: return &multiple_select_form($name,$value,4,%domains);
1012: } else {
1013: return &select_form($name,$value,%domains);
1014: }
1015: }
1016:
1017: sub multiple_select_form {
1018: my ($name,$value,$size,%hash)=@_;
1019: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1020: my $output='';
1021: if (! defined($size)) {
1022: $size = 4;
1023: if (scalar(keys(%hash))<4) {
1024: $size = scalar(keys(%hash));
1025: }
1026: }
1027: $output.="\n<select name='$name' size='$size' multiple='1'>";
1028: foreach (sort(keys(%hash))) {
1029: $output.='<option value="'.$_.'" ';
1030: $output.='selected ' if ($selected{$_});
1031: $output.='>'.$hash{$_}."</option>\n";
1032: }
1033: $output.="</select>\n";
1034: return $output;
1035: }
1036:
1037: #-------------------------------------------
1038:
1039: =pod
1040:
1041: =item * select_form($defdom,$name,%hash)
1042:
1043: Returns a string containing a <select name='$name' size='1'> form to
1044: allow a user to select options from a hash option_name => displayed text.
1045: See lonrights.pm for an example invocation and use.
1046:
1047: =cut
1048:
1049: #-------------------------------------------
1050: sub select_form {
1051: my ($def,$name,%hash) = @_;
1052: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1053: my @keys;
1054: if (exists($hash{'select_form_order'})) {
1055: @keys=@{$hash{'select_form_order'}};
1056: } else {
1057: @keys=sort(keys(%hash));
1058: }
1059: foreach (@keys) {
1060: $selectform.="<option value=\"$_\" ".
1061: ($_ eq $def ? 'selected' : '').
1062: ">".&mt($hash{$_})."</option>\n";
1063: }
1064: $selectform.="</select>";
1065: return $selectform;
1066: }
1067:
1068: sub gradeleveldescription {
1069: my $gradelevel=shift;
1070: my %gradelevels=(0 => 'Not specified',
1071: 1 => 'Grade 1',
1072: 2 => 'Grade 2',
1073: 3 => 'Grade 3',
1074: 4 => 'Grade 4',
1075: 5 => 'Grade 5',
1076: 6 => 'Grade 6',
1077: 7 => 'Grade 7',
1078: 8 => 'Grade 8',
1079: 9 => 'Grade 9',
1080: 10 => 'Grade 10',
1081: 11 => 'Grade 11',
1082: 12 => 'Grade 12',
1083: 13 => 'Grade 13',
1084: 14 => '100 Level',
1085: 15 => '200 Level',
1086: 16 => '300 Level',
1087: 17 => '400 Level',
1088: 18 => 'Graduate Level');
1089: return &mt($gradelevels{$gradelevel});
1090: }
1091:
1092: sub select_level_form {
1093: my ($deflevel,$name)=@_;
1094: unless ($deflevel) { $deflevel=0; }
1095: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1096: for (my $i=0; $i<=18; $i++) {
1097: $selectform.="<option value=\"$i\" ".
1098: ($i==$deflevel ? 'selected' : '').
1099: ">".&gradeleveldescription($i)."</option>\n";
1100: }
1101: $selectform.="</select>";
1102: return $selectform;
1103: }
1104:
1105: #-------------------------------------------
1106:
1107: =pod
1108:
1109: =item * select_dom_form($defdom,$name,$includeempty)
1110:
1111: Returns a string containing a <select name='$name' size='1'> form to
1112: allow a user to select the domain to preform an operation in.
1113: See loncreateuser.pm for an example invocation and use.
1114:
1115: If the $includeempty flag is set, it also includes an empty choice ("no domain
1116: selected");
1117:
1118: =cut
1119:
1120: #-------------------------------------------
1121: sub select_dom_form {
1122: my ($defdom,$name,$includeempty) = @_;
1123: my @domains = get_domains();
1124: if ($includeempty) { @domains=('',@domains); }
1125: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1126: foreach (@domains) {
1127: $selectdomain.="<option value=\"$_\" ".
1128: ($_ eq $defdom ? 'selected' : '').
1129: ">$_</option>\n";
1130: }
1131: $selectdomain.="</select>";
1132: return $selectdomain;
1133: }
1134:
1135: #-------------------------------------------
1136:
1137: =pod
1138:
1139: =item * get_library_servers($domain)
1140:
1141: Returns a hash which contains keys like '103l3' and values like
1142: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1143: given $domain.
1144:
1145: =cut
1146:
1147: #-------------------------------------------
1148: sub get_library_servers {
1149: my $domain = shift;
1150: my %library_servers;
1151: foreach (keys(%Apache::lonnet::libserv)) {
1152: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1153: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1154: }
1155: }
1156: return %library_servers;
1157: }
1158:
1159: #-------------------------------------------
1160:
1161: =pod
1162:
1163: =item * home_server_option_list($domain)
1164:
1165: returns a string which contains an <option> list to be used in a
1166: <select> form input. See loncreateuser.pm for an example.
1167:
1168: =cut
1169:
1170: #-------------------------------------------
1171: sub home_server_option_list {
1172: my $domain = shift;
1173: my %servers = &get_library_servers($domain);
1174: my $result = '';
1175: foreach (sort keys(%servers)) {
1176: $result.=
1177: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1178: }
1179: return $result;
1180: }
1181:
1182: =pod
1183:
1184: =back
1185:
1186: =cut
1187:
1188: ###############################################################
1189: ## Decoding User Agent ##
1190: ###############################################################
1191:
1192: =pod
1193:
1194: =head1 Decoding the User Agent
1195:
1196: =over 4
1197:
1198: =item * &decode_user_agent()
1199:
1200: Inputs: $r
1201:
1202: Outputs:
1203:
1204: =over 4
1205:
1206: =item * $httpbrowser
1207:
1208: =item * $clientbrowser
1209:
1210: =item * $clientversion
1211:
1212: =item * $clientmathml
1213:
1214: =item * $clientunicode
1215:
1216: =item * $clientos
1217:
1218: =back
1219:
1220: =back
1221:
1222: =cut
1223:
1224: ###############################################################
1225: ###############################################################
1226: sub decode_user_agent {
1227: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1228: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1229: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1230: my $clientbrowser='unknown';
1231: my $clientversion='0';
1232: my $clientmathml='';
1233: my $clientunicode='0';
1234: for (my $i=0;$i<=$#browsertype;$i++) {
1235: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1236: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1237: $clientbrowser=$bname;
1238: $httpbrowser=~/$vreg/i;
1239: $clientversion=$1;
1240: $clientmathml=($clientversion>=$minv);
1241: $clientunicode=($clientversion>=$univ);
1242: }
1243: }
1244: my $clientos='unknown';
1245: if (($httpbrowser=~/linux/i) ||
1246: ($httpbrowser=~/unix/i) ||
1247: ($httpbrowser=~/ux/i) ||
1248: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1249: if (($httpbrowser=~/vax/i) ||
1250: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1251: if ($httpbrowser=~/next/i) { $clientos='next'; }
1252: if (($httpbrowser=~/mac/i) ||
1253: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1254: if ($httpbrowser=~/win/i) { $clientos='win'; }
1255: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1256: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1257: $clientunicode,$clientos,);
1258: }
1259:
1260: ###############################################################
1261: ## Authentication changing form generation subroutines ##
1262: ###############################################################
1263: ##
1264: ## All of the authform_xxxxxxx subroutines take their inputs in a
1265: ## hash, and have reasonable default values.
1266: ##
1267: ## formname = the name given in the <form> tag.
1268: #-------------------------------------------
1269:
1270: =pod
1271:
1272: =head1 Authentication Routines
1273:
1274: =over 4
1275:
1276: =item * authform_xxxxxx
1277:
1278: The authform_xxxxxx subroutines provide javascript and html forms which
1279: handle some of the conveniences required for authentication forms.
1280: This is not an optimal method, but it works.
1281:
1282: See loncreateuser.pm for invocation and use examples.
1283:
1284: =over 4
1285:
1286: =item * authform_header
1287:
1288: =item * authform_authorwarning
1289:
1290: =item * authform_nochange
1291:
1292: =item * authform_kerberos
1293:
1294: =item * authform_internal
1295:
1296: =item * authform_filesystem
1297:
1298: =back
1299:
1300: =back
1301:
1302: =cut
1303:
1304: #-------------------------------------------
1305: sub authform_header{
1306: my %in = (
1307: formname => 'cu',
1308: kerb_def_dom => '',
1309: @_,
1310: );
1311: $in{'formname'} = 'document.' . $in{'formname'};
1312: my $result='';
1313:
1314: #---------------------------------------------- Code for upper case translation
1315: my $Javascript_toUpperCase;
1316: unless ($in{kerb_def_dom}) {
1317: $Javascript_toUpperCase =<<"END";
1318: switch (choice) {
1319: case 'krb': currentform.elements[choicearg].value =
1320: currentform.elements[choicearg].value.toUpperCase();
1321: break;
1322: default:
1323: }
1324: END
1325: } else {
1326: $Javascript_toUpperCase = "";
1327: }
1328:
1329: my $radioval = "'nochange'";
1330: if (exists($in{'curr_authtype'}) &&
1331: defined($in{'curr_authtype'}) &&
1332: $in{'curr_authtype'} ne '') {
1333: $radioval = "'$in{'curr_authtype'}arg'";
1334: }
1335: my $argfield = 'null';
1336: if ( grep/^mode$/,(keys %in) ) {
1337: if ($in{'mode'} eq 'modifycourse') {
1338: if ( grep/^curr_authtype$/,(keys %in) ) {
1339: $radioval = "'$in{'curr_authtype'}'";
1340: }
1341: if ( grep/^curr_autharg$/,(keys %in) ) {
1342: unless ($in{'curr_autharg'} eq '') {
1343: $argfield = "'$in{'curr_autharg'}'";
1344: }
1345: }
1346: }
1347: }
1348:
1349: $result.=<<"END";
1350: var current = new Object();
1351: current.radiovalue = $radioval;
1352: current.argfield = $argfield;
1353:
1354: function changed_radio(choice,currentform) {
1355: var choicearg = choice + 'arg';
1356: // If a radio button in changed, we need to change the argfield
1357: if (current.radiovalue != choice) {
1358: current.radiovalue = choice;
1359: if (current.argfield != null) {
1360: currentform.elements[current.argfield].value = '';
1361: }
1362: if (choice == 'nochange') {
1363: current.argfield = null;
1364: } else {
1365: current.argfield = choicearg;
1366: switch(choice) {
1367: case 'krb':
1368: currentform.elements[current.argfield].value =
1369: "$in{'kerb_def_dom'}";
1370: break;
1371: default:
1372: break;
1373: }
1374: }
1375: }
1376: return;
1377: }
1378:
1379: function changed_text(choice,currentform) {
1380: var choicearg = choice + 'arg';
1381: if (currentform.elements[choicearg].value !='') {
1382: $Javascript_toUpperCase
1383: // clear old field
1384: if ((current.argfield != choicearg) && (current.argfield != null)) {
1385: currentform.elements[current.argfield].value = '';
1386: }
1387: current.argfield = choicearg;
1388: }
1389: set_auth_radio_buttons(choice,currentform);
1390: return;
1391: }
1392:
1393: function set_auth_radio_buttons(newvalue,currentform) {
1394: var i=0;
1395: while (i < currentform.login.length) {
1396: if (currentform.login[i].value == newvalue) { break; }
1397: i++;
1398: }
1399: if (i == currentform.login.length) {
1400: return;
1401: }
1402: current.radiovalue = newvalue;
1403: currentform.login[i].checked = true;
1404: return;
1405: }
1406: END
1407: return $result;
1408: }
1409:
1410: sub authform_authorwarning{
1411: my $result='';
1412: $result='<i>'.
1413: &mt('As a general rule, only authors or co-authors should be '.
1414: 'filesystem authenticated '.
1415: '(which allows access to the server filesystem).')."</i>\n";
1416: return $result;
1417: }
1418:
1419: sub authform_nochange{
1420: my %in = (
1421: formname => 'document.cu',
1422: kerb_def_dom => 'MSU.EDU',
1423: @_,
1424: );
1425: my $result = &mt('[_1] Do not change login data',
1426: '<input type="radio" name="login" value="nochange" '.
1427: 'checked="checked" onclick="'.
1428: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1429: return $result;
1430: }
1431:
1432: sub authform_kerberos{
1433: my %in = (
1434: formname => 'document.cu',
1435: kerb_def_dom => 'MSU.EDU',
1436: kerb_def_auth => 'krb4',
1437: @_,
1438: );
1439: my ($check4,$check5,$krbarg);
1440: if ($in{'kerb_def_auth'} eq 'krb5') {
1441: $check5 = " checked=\"on\"";
1442: } else {
1443: $check4 = " checked=\"on\"";
1444: }
1445: $krbarg = $in{'kerb_def_dom'};
1446:
1447: my $krbcheck = "";
1448: if ( grep/^curr_authtype$/,(keys %in) ) {
1449: if ($in{'curr_authtype'} =~ m/^krb/) {
1450: $krbcheck = " checked=\"on\"";
1451: if ( grep/^curr_autharg$/,(keys %in) ) {
1452: $krbarg = $in{'curr_autharg'};
1453: }
1454: }
1455: }
1456:
1457: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1458: my $result .= &mt
1459: ('[_1] Kerberos authenticated with domain [_2] '.
1460: '[_3] Version 4 [_4] Version 5',
1461: '<input type="radio" name="login" value="krb" '.
1462: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1463: '<input type="text" size="10" name="krbarg" '.
1464: 'value="'.$krbarg.'" '.
1465: 'onchange="'.$jscall.'" />',
1466: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1467: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1468: return $result;
1469: }
1470:
1471: sub authform_internal{
1472: my %args = (
1473: formname => 'document.cu',
1474: kerb_def_dom => 'MSU.EDU',
1475: @_,
1476: );
1477:
1478: my $intcheck = "";
1479: my $intarg = 'value=""';
1480: if ( grep/^curr_authtype$/,(keys %args) ) {
1481: if ($args{'curr_authtype'} eq 'int') {
1482: $intcheck = " checked=\"on\"";
1483: if ( grep/^curr_autharg$/,(keys %args) ) {
1484: $intarg = "value=\"$args{'curr_autharg'}\"";
1485: }
1486: }
1487: }
1488:
1489: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1490: my $result.=&mt
1491: ('[_1] Internally authenticated (with initial password [_2])',
1492: '<input type="radio" name="login" value="int" '.$intcheck.
1493: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1494: '<input type="text" size="10" name="intarg" '.$intarg.
1495: ' onchange="'.$jscall.'" />');
1496: return $result;
1497: }
1498:
1499: sub authform_local{
1500: my %in = (
1501: formname => 'document.cu',
1502: kerb_def_dom => 'MSU.EDU',
1503: @_,
1504: );
1505:
1506: my $loccheck = "";
1507: my $locarg = 'value=""';
1508: if ( grep/^curr_authtype$/,(keys %in) ) {
1509: if ($in{'curr_authtype'} eq 'loc') {
1510: $loccheck = " checked=\"on\"";
1511: if ( grep/^curr_autharg$/,(keys %in) ) {
1512: $locarg = "value=\"$in{'curr_autharg'}\"";
1513: }
1514: }
1515: }
1516:
1517: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1518: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1519: '<input type="radio" name="login" value="loc" '.$loccheck.
1520: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1521: '<input type="text" size="10" name="locarg" '.$locarg.
1522: ' onchange="'.$jscall.'" />');
1523: return $result;
1524: }
1525:
1526: sub authform_filesystem{
1527: my %in = (
1528: formname => 'document.cu',
1529: kerb_def_dom => 'MSU.EDU',
1530: @_,
1531: );
1532: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1533: my $result.= &mt
1534: ('[_1] Filesystem Authenticated (with initial password [_2])',
1535: '<input type="radio" name="login" value="fsys" '.
1536: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1537: '<input type="text" size="10" name="fsysarg" value="" '.
1538: 'onchange="'.$jscall.'" />');
1539: return $result;
1540: }
1541:
1542: ###############################################################
1543: ## Get Authentication Defaults for Domain ##
1544: ###############################################################
1545:
1546: =pod
1547:
1548: =head1 Domains and Authentication
1549:
1550: Returns default authentication type and an associated argument as
1551: listed in file 'domain.tab'.
1552:
1553: =over 4
1554:
1555: =item * get_auth_defaults
1556:
1557: get_auth_defaults($target_domain) returns the default authentication
1558: type and an associated argument (initial password or a kerberos domain).
1559: These values are stored in lonTabs/domain.tab
1560:
1561: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1562:
1563: If target_domain is not found in domain.tab, returns nothing ('').
1564:
1565: =cut
1566:
1567: #-------------------------------------------
1568: sub get_auth_defaults {
1569: my $domain=shift;
1570: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1571: }
1572: ###############################################################
1573: ## End Get Authentication Defaults for Domain ##
1574: ###############################################################
1575:
1576: ###############################################################
1577: ## Get Kerberos Defaults for Domain ##
1578: ###############################################################
1579: ##
1580: ## Returns default kerberos version and an associated argument
1581: ## as listed in file domain.tab. If not listed, provides
1582: ## appropriate default domain and kerberos version.
1583: ##
1584: #-------------------------------------------
1585:
1586: =pod
1587:
1588: =item * get_kerberos_defaults
1589:
1590: get_kerberos_defaults($target_domain) returns the default kerberos
1591: version and domain. If not found in domain.tabs, it defaults to
1592: version 4 and the domain of the server.
1593:
1594: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1595:
1596: =cut
1597:
1598: #-------------------------------------------
1599: sub get_kerberos_defaults {
1600: my $domain=shift;
1601: my ($krbdef,$krbdefdom) =
1602: &Apache::loncommon::get_auth_defaults($domain);
1603: unless ($krbdef =~/^krb/ && $krbdefdom) {
1604: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1605: my $krbdefdom=$1;
1606: $krbdefdom=~tr/a-z/A-Z/;
1607: $krbdef = "krb4";
1608: }
1609: return ($krbdef,$krbdefdom);
1610: }
1611:
1612: =pod
1613:
1614: =back
1615:
1616: =cut
1617:
1618: ###############################################################
1619: ## Thesaurus Functions ##
1620: ###############################################################
1621:
1622: =pod
1623:
1624: =head1 Thesaurus Functions
1625:
1626: =over 4
1627:
1628: =item * initialize_keywords
1629:
1630: Initializes the package variable %Keywords if it is empty. Uses the
1631: package variable $thesaurus_db_file.
1632:
1633: =cut
1634:
1635: ###################################################
1636:
1637: sub initialize_keywords {
1638: return 1 if (scalar keys(%Keywords));
1639: # If we are here, %Keywords is empty, so fill it up
1640: # Make sure the file we need exists...
1641: if (! -e $thesaurus_db_file) {
1642: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1643: " failed because it does not exist");
1644: return 0;
1645: }
1646: # Set up the hash as a database
1647: my %thesaurus_db;
1648: if (! tie(%thesaurus_db,'GDBM_File',
1649: $thesaurus_db_file,&GDBM_READER(),0640)){
1650: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1651: $thesaurus_db_file);
1652: return 0;
1653: }
1654: # Get the average number of appearances of a word.
1655: my $avecount = $thesaurus_db{'average.count'};
1656: # Put keywords (those that appear > average) into %Keywords
1657: while (my ($word,$data)=each (%thesaurus_db)) {
1658: my ($count,undef) = split /:/,$data;
1659: $Keywords{$word}++ if ($count > $avecount);
1660: }
1661: untie %thesaurus_db;
1662: # Remove special values from %Keywords.
1663: foreach ('total.count','average.count') {
1664: delete($Keywords{$_}) if (exists($Keywords{$_}));
1665: }
1666: return 1;
1667: }
1668:
1669: ###################################################
1670:
1671: =pod
1672:
1673: =item * keyword($word)
1674:
1675: Returns true if $word is a keyword. A keyword is a word that appears more
1676: than the average number of times in the thesaurus database. Calls
1677: &initialize_keywords
1678:
1679: =cut
1680:
1681: ###################################################
1682:
1683: sub keyword {
1684: return if (!&initialize_keywords());
1685: my $word=lc(shift());
1686: $word=~s/\W//g;
1687: return exists($Keywords{$word});
1688: }
1689:
1690: ###############################################################
1691:
1692: =pod
1693:
1694: =item * get_related_words
1695:
1696: Look up a word in the thesaurus. Takes a scalar argument and returns
1697: an array of words. If the keyword is not in the thesaurus, an empty array
1698: will be returned. The order of the words returned is determined by the
1699: database which holds them.
1700:
1701: Uses global $thesaurus_db_file.
1702:
1703: =cut
1704:
1705: ###############################################################
1706: sub get_related_words {
1707: my $keyword = shift;
1708: my %thesaurus_db;
1709: if (! -e $thesaurus_db_file) {
1710: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1711: "failed because the file does not exist");
1712: return ();
1713: }
1714: if (! tie(%thesaurus_db,'GDBM_File',
1715: $thesaurus_db_file,&GDBM_READER(),0640)){
1716: return ();
1717: }
1718: my @Words=();
1719: if (exists($thesaurus_db{$keyword})) {
1720: $_ = $thesaurus_db{$keyword};
1721: (undef,@Words) = split/:/; # The first element is the number of times
1722: # the word appears. We do not need it now.
1723: for (my $i=0;$i<=$#Words;$i++) {
1724: ($Words[$i],undef)= split/\,/,$Words[$i];
1725: }
1726: }
1727: untie %thesaurus_db;
1728: return @Words;
1729: }
1730:
1731: =pod
1732:
1733: =back
1734:
1735: =cut
1736:
1737: # -------------------------------------------------------------- Plaintext name
1738: =pod
1739:
1740: =head1 User Name Functions
1741:
1742: =over 4
1743:
1744: =item * plainname($uname,$udom)
1745:
1746: Takes a users logon name and returns it as a string in
1747: "first middle last generation" form
1748:
1749: =cut
1750:
1751: ###############################################################
1752: sub plainname {
1753: my ($uname,$udom)=@_;
1754: my %names=&Apache::lonnet::get('environment',
1755: ['firstname','middlename','lastname','generation'],
1756: $udom,$uname);
1757: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1758: $names{'lastname'}.' '.$names{'generation'};
1759: $name=~s/\s+$//;
1760: $name=~s/\s+/ /g;
1761: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1762: return $name;
1763: }
1764:
1765: # -------------------------------------------------------------------- Nickname
1766: =pod
1767:
1768: =item * nickname($uname,$udom)
1769:
1770: Gets a users name and returns it as a string as
1771:
1772: ""nickname""
1773:
1774: if the user has a nickname or
1775:
1776: "first middle last generation"
1777:
1778: if the user does not
1779:
1780: =cut
1781:
1782: sub nickname {
1783: my ($uname,$udom)=@_;
1784: my %names;
1785: if ($uname eq $ENV{'user.name'} &&
1786: $udom eq $ENV{'user.domain'}) {
1787: %names=('nickname' => $ENV{'environment.nickname'} ,
1788: 'firstname' => $ENV{'environment.firstname'} ,
1789: 'middlename' => $ENV{'environment.middlename'},
1790: 'lastname' => $ENV{'environment.lastname'} ,
1791: 'generation' => $ENV{'environment.generation'});
1792: } else {
1793: %names=&Apache::lonnet::get('environment',
1794: ['nickname','firstname','middlename',
1795: 'lastname','generation'],$udom,$uname);
1796: }
1797: my $name=$names{'nickname'};
1798: if ($name) {
1799: $name='"'.$name.'"';
1800: } else {
1801: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1802: $names{'lastname'}.' '.$names{'generation'};
1803: $name=~s/\s+$//;
1804: $name=~s/\s+/ /g;
1805: }
1806: return $name;
1807: }
1808:
1809:
1810: # ------------------------------------------------------------------ Screenname
1811:
1812: =pod
1813:
1814: =item * screenname($uname,$udom)
1815:
1816: Gets a users screenname and returns it as a string
1817:
1818: =cut
1819:
1820: sub screenname {
1821: my ($uname,$udom)=@_;
1822: if ($uname eq $ENV{'user.name'} &&
1823: $udom eq $ENV{'user.domain'}) {return $ENV{'environment.screenname'};}
1824: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1825: return $names{'screenname'};
1826: }
1827:
1828:
1829: # ------------------------------------------------------------- Message Wrapper
1830:
1831: sub messagewrapper {
1832: my ($link,$username,$domain)=@_;
1833: return
1834: '<a href="/adm/email?compose=individual&'.
1835: 'recname='.$username.'&recdom='.$domain.'" '.
1836: 'title="'.&mt('Send message').'">'.$link.'</a>';
1837: }
1838: # --------------------------------------------------------------- Notes Wrapper
1839:
1840: sub noteswrapper {
1841: my ($link,$un,$do)=@_;
1842: return
1843: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1844: }
1845: # ------------------------------------------------------------- Aboutme Wrapper
1846:
1847: sub aboutmewrapper {
1848: my ($link,$username,$domain,$target)=@_;
1849: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1850: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1851: }
1852:
1853: # ------------------------------------------------------------ Syllabus Wrapper
1854:
1855:
1856: sub syllabuswrapper {
1857: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1858: if ($fontcolor) {
1859: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1860: }
1861: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1862: }
1863:
1864: sub track_student_link {
1865: my ($linktext,$sname,$sdom,$target) = @_;
1866: my $link ="/adm/trackstudent";
1867: my $title = 'View recent activity';
1868: if (defined($sname) && $sname !~ /^\s*$/ &&
1869: defined($sdom) && $sdom !~ /^\s*$/) {
1870: $link .= "?selected_student=$sname:$sdom";
1871: $title .= ' of this student';
1872: }
1873: if (defined($target) && $target !~ /^\s*$/) {
1874: $target = qq{target="$target"};
1875: } else {
1876: $target = '';
1877: }
1878: return qq{<a href="$link" title="$title" $target>$linktext</a>};
1879: }
1880:
1881:
1882:
1883: =pod
1884:
1885: =back
1886:
1887: =head1 Access .tab File Data
1888:
1889: =over 4
1890:
1891: =item * languageids()
1892:
1893: returns list of all language ids
1894:
1895: =cut
1896:
1897: sub languageids {
1898: return sort(keys(%language));
1899: }
1900:
1901: =pod
1902:
1903: =item * languagedescription()
1904:
1905: returns description of a specified language id
1906:
1907: =cut
1908:
1909: sub languagedescription {
1910: my $code=shift;
1911: return ($supported_language{$code}?'* ':'').
1912: $language{$code}.
1913: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1914: }
1915:
1916: sub plainlanguagedescription {
1917: my $code=shift;
1918: return $language{$code};
1919: }
1920:
1921: sub supportedlanguagecode {
1922: my $code=shift;
1923: return $supported_language{$code};
1924: }
1925:
1926: =pod
1927:
1928: =item * copyrightids()
1929:
1930: returns list of all copyrights
1931:
1932: =cut
1933:
1934: sub copyrightids {
1935: return sort(keys(%cprtag));
1936: }
1937:
1938: =pod
1939:
1940: =item * copyrightdescription()
1941:
1942: returns description of a specified copyright id
1943:
1944: =cut
1945:
1946: sub copyrightdescription {
1947: return &mt($cprtag{shift(@_)});
1948: }
1949:
1950: =pod
1951:
1952: =item * source_copyrightids()
1953:
1954: returns list of all source copyrights
1955:
1956: =cut
1957:
1958: sub source_copyrightids {
1959: return sort(keys(%scprtag));
1960: }
1961:
1962: =pod
1963:
1964: =item * source_copyrightdescription()
1965:
1966: returns description of a specified source copyright id
1967:
1968: =cut
1969:
1970: sub source_copyrightdescription {
1971: return &mt($scprtag{shift(@_)});
1972: }
1973:
1974: =pod
1975:
1976: =item * filecategories()
1977:
1978: returns list of all file categories
1979:
1980: =cut
1981:
1982: sub filecategories {
1983: return sort(keys(%category_extensions));
1984: }
1985:
1986: =pod
1987:
1988: =item * filecategorytypes()
1989:
1990: returns list of file types belonging to a given file
1991: category
1992:
1993: =cut
1994:
1995: sub filecategorytypes {
1996: return @{$category_extensions{lc($_[0])}};
1997: }
1998:
1999: =pod
2000:
2001: =item * fileembstyle()
2002:
2003: returns embedding style for a specified file type
2004:
2005: =cut
2006:
2007: sub fileembstyle {
2008: return $fe{lc(shift(@_))};
2009: }
2010:
2011:
2012: sub filecategoryselect {
2013: my ($name,$value)=@_;
2014: return &select_form($value,$name,
2015: '' => &mt('Any category'),
2016: map { $_,$_ } sort(keys(%category_extensions)));
2017: }
2018:
2019: =pod
2020:
2021: =item * filedescription()
2022:
2023: returns description for a specified file type
2024:
2025: =cut
2026:
2027: sub filedescription {
2028: my $file_description = $fd{lc(shift())};
2029: $file_description =~ s:([\[\]]):~$1:g;
2030: return &mt($file_description);
2031: }
2032:
2033: =pod
2034:
2035: =item * filedescriptionex()
2036:
2037: returns description for a specified file type with
2038: extra formatting
2039:
2040: =cut
2041:
2042: sub filedescriptionex {
2043: my $ex=shift;
2044: my $file_description = $fd{lc($ex)};
2045: $file_description =~ s:([\[\]]):~$1:g;
2046: return '.'.$ex.' '.&mt($file_description);
2047: }
2048:
2049: # End of .tab access
2050: =pod
2051:
2052: =back
2053:
2054: =cut
2055:
2056: # ------------------------------------------------------------------ File Types
2057: sub fileextensions {
2058: return sort(keys(%fe));
2059: }
2060:
2061: # ----------------------------------------------------------- Display Languages
2062: # returns a hash with all desired display languages
2063: #
2064:
2065: sub display_languages {
2066: my %languages=();
2067: foreach (&preferred_languages()) {
2068: $languages{$_}=1;
2069: }
2070: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2071: if ($ENV{'form.displaylanguage'}) {
2072: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2073: $languages{$_}=1;
2074: }
2075: }
2076: return %languages;
2077: }
2078:
2079: sub preferred_languages {
2080: my @languages=();
2081: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2082: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2083: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2084: }
2085: if ($ENV{'environment.languages'}) {
2086: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2087: }
2088: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2089: if ($browser) {
2090: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2091: }
2092: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2093: @languages=(@languages,
2094: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2095: }
2096: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2097: @languages=(@languages,
2098: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2099: }
2100: if ($Apache::lonnet::domain_lang_def{
2101: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2102: @languages=(@languages,
2103: $Apache::lonnet::domain_lang_def{
2104: $Apache::lonnet::perlvar{'lonDefDomain'}});
2105: }
2106: # turn "en-ca" into "en-ca,en"
2107: my @genlanguages;
2108: foreach (@languages) {
2109: unless ($_=~/\w/) { next; }
2110: push (@genlanguages,$_);
2111: if ($_=~/(\-|\_)/) {
2112: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2113: }
2114: }
2115: return @genlanguages;
2116: }
2117:
2118: ###############################################################
2119: ## Student Answer Attempts ##
2120: ###############################################################
2121:
2122: =pod
2123:
2124: =head1 Alternate Problem Views
2125:
2126: =over 4
2127:
2128: =item * get_previous_attempt($symb, $username, $domain, $course,
2129: $getattempt, $regexp, $gradesub)
2130:
2131: Return string with previous attempt on problem. Arguments:
2132:
2133: =over 4
2134:
2135: =item * $symb: Problem, including path
2136:
2137: =item * $username: username of the desired student
2138:
2139: =item * $domain: domain of the desired student
2140:
2141: =item * $course: Course ID
2142:
2143: =item * $getattempt: Leave blank for all attempts, otherwise put
2144: something
2145:
2146: =item * $regexp: if string matches this regexp, the string will be
2147: sent to $gradesub
2148:
2149: =item * $gradesub: routine that processes the string if it matches $regexp
2150:
2151: =back
2152:
2153: The output string is a table containing all desired attempts, if any.
2154:
2155: =cut
2156:
2157: sub get_previous_attempt {
2158: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2159: my $prevattempts='';
2160: no strict 'refs';
2161: if ($symb) {
2162: my (%returnhash)=
2163: &Apache::lonnet::restore($symb,$course,$domain,$username);
2164: if ($returnhash{'version'}) {
2165: my %lasthash=();
2166: my $version;
2167: for ($version=1;$version<=$returnhash{'version'};$version++) {
2168: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2169: $lasthash{$_}=$returnhash{$version.':'.$_};
2170: }
2171: }
2172: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2173: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2174: foreach (sort(keys %lasthash)) {
2175: my ($ign,@parts) = split(/\./,$_);
2176: if ($#parts > 0) {
2177: my $data=$parts[-1];
2178: pop(@parts);
2179: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2180: } else {
2181: if ($#parts == 0) {
2182: $prevattempts.='<th>'.$parts[0].'</th>';
2183: } else {
2184: $prevattempts.='<th>'.$ign.'</th>';
2185: }
2186: }
2187: }
2188: if ($getattempt eq '') {
2189: for ($version=1;$version<=$returnhash{'version'};$version++) {
2190: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2191: foreach (sort(keys %lasthash)) {
2192: my $value;
2193: if ($_ =~ /timestamp/) {
2194: $value=scalar(localtime($returnhash{$version.':'.$_}));
2195: } else {
2196: $value=$returnhash{$version.':'.$_};
2197: }
2198: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2199: }
2200: }
2201: }
2202: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2203: foreach (sort(keys %lasthash)) {
2204: my $value;
2205: if ($_ =~ /timestamp/) {
2206: $value=scalar(localtime($lasthash{$_}));
2207: } else {
2208: $value=$lasthash{$_};
2209: }
2210: $value=&Apache::lonnet::unescape($value);
2211: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2212: $prevattempts.='<td>'.$value.' </td>';
2213: }
2214: $prevattempts.='</tr></table></td></tr></table>';
2215: } else {
2216: $prevattempts='Nothing submitted - no attempts.';
2217: }
2218: } else {
2219: $prevattempts='No data.';
2220: }
2221: }
2222:
2223: sub relative_to_absolute {
2224: my ($url,$output)=@_;
2225: my $parser=HTML::TokeParser->new(\$output);
2226: my $token;
2227: my $thisdir=$url;
2228: my @rlinks=();
2229: while ($token=$parser->get_token) {
2230: if ($token->[0] eq 'S') {
2231: if ($token->[1] eq 'a') {
2232: if ($token->[2]->{'href'}) {
2233: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2234: }
2235: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2236: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2237: } elsif ($token->[1] eq 'base') {
2238: $thisdir=$token->[2]->{'href'};
2239: }
2240: }
2241: }
2242: $thisdir=~s-/[^/]*$--;
2243: foreach (@rlinks) {
2244: unless (($_=~/^http:\/\//i) ||
2245: ($_=~/^\//) ||
2246: ($_=~/^javascript:/i) ||
2247: ($_=~/^mailto:/i) ||
2248: ($_=~/^\#/)) {
2249: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2250: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2251: }
2252: }
2253: # -------------------------------------------------- Deal with Applet codebases
2254: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2255: return $output;
2256: }
2257:
2258: =pod
2259:
2260: =item * get_student_view
2261:
2262: show a snapshot of what student was looking at
2263:
2264: =cut
2265:
2266: sub get_student_view {
2267: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2268: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2269: my (%form);
2270: my @elements=('symb','courseid','domain','username');
2271: foreach my $element (@elements) {
2272: $form{'grade_'.$element}=eval '$'.$element #'
2273: }
2274: if (defined($moreenv)) {
2275: %form=(%form,%{$moreenv});
2276: }
2277: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2278: $feedurl=&Apache::lonnet::clutter($feedurl);
2279: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2280: $userview=~s/\<body[^\>]*\>//gi;
2281: $userview=~s/\<\/body\>//gi;
2282: $userview=~s/\<html\>//gi;
2283: $userview=~s/\<\/html\>//gi;
2284: $userview=~s/\<head\>//gi;
2285: $userview=~s/\<\/head\>//gi;
2286: $userview=~s/action\s*\=/would_be_action\=/gi;
2287: $userview=&relative_to_absolute($feedurl,$userview);
2288: return $userview;
2289: }
2290:
2291: =pod
2292:
2293: =item * get_student_answers()
2294:
2295: show a snapshot of how student was answering problem
2296:
2297: =cut
2298:
2299: sub get_student_answers {
2300: my ($symb,$username,$domain,$courseid,%form) = @_;
2301: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2302: my (%moreenv);
2303: my @elements=('symb','courseid','domain','username');
2304: foreach my $element (@elements) {
2305: $moreenv{'grade_'.$element}=eval '$'.$element #'
2306: }
2307: $moreenv{'grade_target'}='answer';
2308: %moreenv=(%form,%moreenv);
2309: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2310: return $userview;
2311: }
2312:
2313: =pod
2314:
2315: =item * &submlink()
2316:
2317: Inputs: $text $uname $udom $symb
2318:
2319: Returns: A link to grades.pm such as to see the SUBM view of a student
2320:
2321: =cut
2322:
2323: ###############################################
2324: sub submlink {
2325: my ($text,$uname,$udom,$symb)=@_;
2326: if (!($uname && $udom)) {
2327: (my $cursymb, my $courseid,$udom,$uname)=
2328: &Apache::lonxml::whichuser($symb);
2329: if (!$symb) { $symb=$cursymb; }
2330: }
2331: if (!$symb) { $symb=&symbread(); }
2332: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2333: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2334: }
2335: ##############################################
2336:
2337: =pod
2338:
2339: =back
2340:
2341: =cut
2342:
2343: ###############################################
2344:
2345:
2346: sub timehash {
2347: my @ltime=localtime(shift);
2348: return ( 'seconds' => $ltime[0],
2349: 'minutes' => $ltime[1],
2350: 'hours' => $ltime[2],
2351: 'day' => $ltime[3],
2352: 'month' => $ltime[4]+1,
2353: 'year' => $ltime[5]+1900,
2354: 'weekday' => $ltime[6],
2355: 'dayyear' => $ltime[7]+1,
2356: 'dlsav' => $ltime[8] );
2357: }
2358:
2359: sub maketime {
2360: my %th=@_;
2361: return POSIX::mktime(
2362: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2363: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2364: }
2365:
2366: #########################################
2367:
2368: sub findallcourses {
2369: my %courses=();
2370: my $now=time;
2371: foreach (keys %ENV) {
2372: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2373: my ($starttime,$endtime)=$ENV{$_};
2374: my $active=1;
2375: if ($starttime) {
2376: if ($now<$starttime) { $active=0; }
2377: }
2378: if ($endtime) {
2379: if ($now>$endtime) { $active=0; }
2380: }
2381: if ($active) { $courses{$1.'_'.$2}=1; }
2382: }
2383: }
2384: return keys %courses;
2385: }
2386:
2387: ###############################################
2388: ###############################################
2389:
2390: =pod
2391:
2392: =head1 Domain Template Functions
2393:
2394: =over 4
2395:
2396: =item * &determinedomain()
2397:
2398: Inputs: $domain (usually will be undef)
2399:
2400: Returns: Determines which domain should be used for designs
2401:
2402: =cut
2403:
2404: ###############################################
2405: sub determinedomain {
2406: my $domain=shift;
2407: if (! $domain) {
2408: # Determine domain if we have not been given one
2409: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2410: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2411: if ($ENV{'request.role.domain'}) {
2412: $domain=$ENV{'request.role.domain'};
2413: }
2414: }
2415: return $domain;
2416: }
2417: ###############################################
2418: =pod
2419:
2420: =item * &domainlogo()
2421:
2422: Inputs: $domain (usually will be undef)
2423:
2424: Returns: A link to a domain logo, if the domain logo exists.
2425: If the domain logo does not exist, a description of the domain.
2426:
2427: =cut
2428:
2429: ###############################################
2430: sub domainlogo {
2431: my $domain = &determinedomain(shift);
2432: # See if there is a logo
2433: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2434: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2435: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2436: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2437: return $Apache::lonnet::domaindescription{$domain};
2438: } else {
2439: return '';
2440: }
2441: }
2442: ##############################################
2443:
2444: =pod
2445:
2446: =item * &designparm()
2447:
2448: Inputs: $which parameter; $domain (usually will be undef)
2449:
2450: Returns: value of designparamter $which
2451:
2452: =cut
2453:
2454: ##############################################
2455: sub designparm {
2456: my ($which,$domain)=@_;
2457: if ($ENV{'browser.blackwhite'} eq 'on') {
2458: if ($which=~/\.(font|alink|vlink|link)$/) {
2459: return '#000000';
2460: }
2461: if ($which=~/\.(pgbg|sidebg)$/) {
2462: return '#FFFFFF';
2463: }
2464: if ($which=~/\.tabbg$/) {
2465: return '#CCCCCC';
2466: }
2467: }
2468: if ($ENV{'environment.color.'.$which}) {
2469: return $ENV{'environment.color.'.$which};
2470: }
2471: $domain=&determinedomain($domain);
2472: if ($designhash{$domain.'.'.$which}) {
2473: return $designhash{$domain.'.'.$which};
2474: } else {
2475: return $designhash{'default.'.$which};
2476: }
2477: }
2478:
2479: ###############################################
2480: ###############################################
2481:
2482: =pod
2483:
2484: =back
2485:
2486: =head1 HTTP Helpers
2487:
2488: =over 4
2489:
2490: =item * &bodytag()
2491:
2492: Returns a uniform header for LON-CAPA web pages.
2493:
2494: Inputs:
2495:
2496: =over 4
2497:
2498: =item * $title, A title to be displayed on the page.
2499:
2500: =item * $function, the current role (can be undef).
2501:
2502: =item * $addentries, extra parameters for the <body> tag.
2503:
2504: =item * $bodyonly, if defined, only return the <body> tag.
2505:
2506: =item * $domain, if defined, force a given domain.
2507:
2508: =item * $forcereg, if page should register as content page (relevant for
2509: text interface only)
2510:
2511: =back
2512:
2513: Returns: A uniform header for LON-CAPA web pages.
2514: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2515: If $bodyonly is undef or zero, an html string containing a <body> tag and
2516: other decorations will be returned.
2517:
2518: =cut
2519:
2520: sub bodytag {
2521: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2522: $title=&mt($title);
2523: $function = &get_users_function() if (!$function);
2524: my $img=&designparm($function.'.img',$domain);
2525: my $pgbg=&designparm($function.'.pgbg',$domain);
2526: my $tabbg=&designparm($function.'.tabbg',$domain);
2527: my $font=&designparm($function.'.font',$domain);
2528: my $link=&designparm($function.'.link',$domain);
2529: my $alink=&designparm($function.'.alink',$domain);
2530: my $vlink=&designparm($function.'.vlink',$domain);
2531: my $sidebg=&designparm($function.'.sidebg',$domain);
2532: # Accessibility font enhance
2533: unless ($addentries) { $addentries=''; }
2534: my $addstyle='';
2535: if ($ENV{'browser.fontenhance'} eq 'on') {
2536: $addstyle=' font-size: x-large;';
2537: }
2538: # role and realm
2539: my ($role,$realm)
2540: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2541: # realm
2542: if ($ENV{'request.course.id'}) {
2543: $realm=
2544: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2545: }
2546: unless ($realm) { $realm=' '; }
2547: # Set messages
2548: my $messages=&domainlogo($domain);
2549: # Port for miniserver
2550: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2551: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2552: # construct main body tag
2553: my $bodytag = <<END;
2554: <style>
2555: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2556: a:focus { color: red; background: yellow }
2557: </style>
2558: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2559: style="margin-top: 0px;$addstyle" $addentries>
2560: END
2561: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2562: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2563: if ($bodyonly) {
2564: return $bodytag;
2565: } elsif ($ENV{'browser.interface'} eq 'textual') {
2566: # Accessibility
2567: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2568: $forcereg).
2569: '<h1>LON-CAPA: '.$title.'</h1>';
2570: } elsif ($ENV{'environment.remote'} eq 'off') {
2571: # No Remote
2572: my $roleinfo=(<<ENDROLE);
2573: <td bgcolor="$tabbg" align="right">
2574: <p>
2575: <font size="2" face="Arial, Helvetica, sans-serif">
2576: $ENV{'environment.firstname'}
2577: $ENV{'environment.middlename'}
2578: $ENV{'environment.lastname'}
2579: $ENV{'environment.generation'}
2580: </font>
2581: <br />
2582: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2583: <br />
2584: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2585: </p>
2586: </td>
2587: ENDROLE
2588: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2589: $forcereg).
2590: '<table bgcolor="'.$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>'.$title.
2591: '</b></font></td>'.$roleinfo.'</tr></table>';
2592: }
2593:
2594: #
2595: # Top frame rendering, Remote is up
2596: #
2597: return(<<ENDBODY);
2598: $bodytag
2599: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2600: <tr><td bgcolor="$sidebg">
2601: $upperleft</td>
2602: <td bgcolor="$sidebg" align="right">$messages </td>
2603: </tr>
2604: <tr>
2605: <td rowspan="3" bgcolor="$tabbg">
2606: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2607: <td bgcolor="$tabbg" align="right">
2608: <font size="2" face="Arial, Helvetica, sans-serif">
2609: $ENV{'environment.firstname'}
2610: $ENV{'environment.middlename'}
2611: $ENV{'environment.lastname'}
2612: $ENV{'environment.generation'}
2613: </font>
2614: </td>
2615: </tr>
2616: <tr><td bgcolor="$tabbg" align="right">
2617: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2618: </td></tr>
2619: <tr>
2620: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2621: </table><br />
2622: ENDBODY
2623: }
2624:
2625: ###############################################
2626:
2627: =pod
2628:
2629: =item get_users_function
2630:
2631: Used by &bodytag to determine the current users primary role.
2632: Returns either 'student','coordinator','admin', or 'author'.
2633:
2634: =cut
2635:
2636: ###############################################
2637: sub get_users_function {
2638: my $function = 'student';
2639: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2640: $function='coordinator';
2641: }
2642: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2643: $function='admin';
2644: }
2645: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2646: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2647: $function='author';
2648: }
2649: return $function;
2650: }
2651:
2652: ###############################################
2653:
2654: sub get_posted_cgi {
2655: my $r=shift;
2656:
2657: my $buffer;
2658:
2659: $r->read($buffer,$r->header_in('Content-length'),0);
2660: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2661: my @pairs=split(/&/,$buffer);
2662: my $pair;
2663: foreach $pair (@pairs) {
2664: my ($name,$value) = split(/=/,$pair);
2665: $value =~ tr/+/ /;
2666: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2667: $name =~ tr/+/ /;
2668: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2669: &add_to_env("form.$name",$value);
2670: }
2671: } else {
2672: my $contentsep=$1;
2673: my @lines = split (/\n/,$buffer);
2674: my $name='';
2675: my $value='';
2676: my $fname='';
2677: my $fmime='';
2678: my $i;
2679: for ($i=0;$i<=$#lines;$i++) {
2680: if ($lines[$i]=~/^$contentsep/) {
2681: if ($name) {
2682: chomp($value);
2683: if ($fname) {
2684: $ENV{"form.$name.filename"}=$fname;
2685: $ENV{"form.$name.mimetype"}=$fmime;
2686: } else {
2687: $value=~s/\s+$//s;
2688: }
2689: &add_to_env("form.$name",$value);
2690: }
2691: if ($i<$#lines) {
2692: $i++;
2693: $lines[$i]=~
2694: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2695: $name=$1;
2696: $value='';
2697: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2698: $fname=$1;
2699: if
2700: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2701: $fmime=$1;
2702: $i++;
2703: } else {
2704: $fmime='';
2705: }
2706: } else {
2707: $fname='';
2708: $fmime='';
2709: }
2710: $i++;
2711: }
2712: } else {
2713: $value.=$lines[$i]."\n";
2714: }
2715: }
2716: }
2717: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2718: $r->method_number(M_GET);
2719: $r->method('GET');
2720: $r->headers_in->unset('Content-length');
2721: }
2722:
2723: =pod
2724:
2725: =item * get_unprocessed_cgi($query,$possible_names)
2726:
2727: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2728: $query. The parameters listed in $possible_names (an array reference),
2729: will be set in $ENV{'form.name'} if they do not already exist.
2730:
2731: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2732: $possible_names is an ref to an array of form element names. As an example:
2733: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2734: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2735:
2736: =cut
2737:
2738: sub get_unprocessed_cgi {
2739: my ($query,$possible_names)= @_;
2740: # $Apache::lonxml::debug=1;
2741: foreach (split(/&/,$query)) {
2742: my ($name, $value) = split(/=/,$_);
2743: $name = &Apache::lonnet::unescape($name);
2744: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2745: $value =~ tr/+/ /;
2746: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2747: &Apache::lonxml::debug("Seting :$name: to :$value:");
2748: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2749: }
2750: }
2751: }
2752:
2753: =pod
2754:
2755: =item * cacheheader()
2756:
2757: returns cache-controlling header code
2758:
2759: =cut
2760:
2761: sub cacheheader {
2762: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2763: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2764: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2765: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2766: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2767: return $output;
2768: }
2769:
2770: =pod
2771:
2772: =item * no_cache($r)
2773:
2774: specifies header code to not have cache
2775:
2776: =cut
2777:
2778: sub no_cache {
2779: my ($r) = @_;
2780: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
2781: $ENV{'request.method'} ne 'GET') { return ''; }
2782: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
2783: $r->no_cache(1);
2784: $r->header_out("Expires" => $date);
2785: $r->header_out("Pragma" => "no-cache");
2786: }
2787:
2788: sub content_type {
2789: my ($r,$type,$charset) = @_;
2790: unless ($charset) {
2791: $charset=&Apache::lonlocal::current_encoding;
2792: }
2793: if ($charset) { $type.='; charset='.$charset; }
2794: if ($r) {
2795: $r->content_type($type);
2796: } else {
2797: print("Content-type: $type\n\n");
2798: }
2799: }
2800:
2801: =pod
2802:
2803: =item * add_to_env($name,$value)
2804:
2805: adds $name to the %ENV hash with value
2806: $value, if $name already exists, the entry is converted to an array
2807: reference and $value is added to the array.
2808:
2809: =cut
2810:
2811: sub add_to_env {
2812: my ($name,$value)=@_;
2813: if (defined($ENV{$name})) {
2814: if (ref($ENV{$name})) {
2815: #already have multiple values
2816: push(@{ $ENV{$name} },$value);
2817: } else {
2818: #first time seeing multiple values, convert hash entry to an arrayref
2819: my $first=$ENV{$name};
2820: undef($ENV{$name});
2821: push(@{ $ENV{$name} },$first,$value);
2822: }
2823: } else {
2824: $ENV{$name}=$value;
2825: }
2826: }
2827:
2828: =pod
2829:
2830: =item * get_env_multiple($name)
2831:
2832: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2833: values may be defined and end up as an array ref.
2834:
2835: returns an array of values
2836:
2837: =cut
2838:
2839: sub get_env_multiple {
2840: my ($name) = @_;
2841: my @values;
2842: if (defined($ENV{$name})) {
2843: # exists is it an array
2844: if (ref($ENV{$name})) {
2845: @values=@{ $ENV{$name} };
2846: } else {
2847: $values[0]=$ENV{$name};
2848: }
2849: }
2850: return(@values);
2851: }
2852:
2853:
2854: =pod
2855:
2856: =back
2857:
2858: =head1 CSV Upload/Handling functions
2859:
2860: =over 4
2861:
2862: =item * upfile_store($r)
2863:
2864: Store uploaded file, $r should be the HTTP Request object,
2865: needs $ENV{'form.upfile'}
2866: returns $datatoken to be put into hidden field
2867:
2868: =cut
2869:
2870: sub upfile_store {
2871: my $r=shift;
2872: $ENV{'form.upfile'}=~s/\r/\n/gs;
2873: $ENV{'form.upfile'}=~s/\f/\n/gs;
2874: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2875: $ENV{'form.upfile'}=~s/\n+$//gs;
2876:
2877: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2878: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2879: {
2880: my $datafile = $r->dir_config('lonDaemons').
2881: '/tmp/'.$datatoken.'.tmp';
2882: if ( open(my $fh,">$datafile") ) {
2883: print $fh $ENV{'form.upfile'};
2884: close($fh);
2885: }
2886: }
2887: return $datatoken;
2888: }
2889:
2890: =pod
2891:
2892: =item * load_tmp_file($r)
2893:
2894: Load uploaded file from tmp, $r should be the HTTP Request object,
2895: needs $ENV{'form.datatoken'},
2896: sets $ENV{'form.upfile'} to the contents of the file
2897:
2898: =cut
2899:
2900: sub load_tmp_file {
2901: my $r=shift;
2902: my @studentdata=();
2903: {
2904: my $studentfile = $r->dir_config('lonDaemons').
2905: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2906: if ( open(my $fh,"<$studentfile") ) {
2907: @studentdata=<$fh>;
2908: close($fh);
2909: }
2910: }
2911: $ENV{'form.upfile'}=join('',@studentdata);
2912: }
2913:
2914: =pod
2915:
2916: =item * upfile_record_sep()
2917:
2918: Separate uploaded file into records
2919: returns array of records,
2920: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2921:
2922: =cut
2923:
2924: sub upfile_record_sep {
2925: if ($ENV{'form.upfiletype'} eq 'xml') {
2926: } else {
2927: return split(/\n/,$ENV{'form.upfile'});
2928: }
2929: }
2930:
2931: =pod
2932:
2933: =item * record_sep($record)
2934:
2935: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2936:
2937: =cut
2938:
2939: sub record_sep {
2940: my $record=shift;
2941: my %components=();
2942: if ($ENV{'form.upfiletype'} eq 'xml') {
2943: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2944: my $i=0;
2945: foreach (split(/\s+/,$record)) {
2946: my $field=$_;
2947: $field=~s/^(\"|\')//;
2948: $field=~s/(\"|\')$//;
2949: $components{$i}=$field;
2950: $i++;
2951: }
2952: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2953: my $i=0;
2954: foreach (split(/\t/,$record)) {
2955: my $field=$_;
2956: $field=~s/^(\"|\')//;
2957: $field=~s/(\"|\')$//;
2958: $components{$i}=$field;
2959: $i++;
2960: }
2961: } else {
2962: my @allfields=split(/\,/,$record);
2963: my $i=0;
2964: my $j;
2965: for ($j=0;$j<=$#allfields;$j++) {
2966: my $field=$allfields[$j];
2967: if ($field=~/^\s*(\"|\')/) {
2968: my $delimiter=$1;
2969: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2970: $j++;
2971: $field.=','.$allfields[$j];
2972: }
2973: $field=~s/^\s*$delimiter//;
2974: $field=~s/$delimiter\s*$//;
2975: }
2976: $components{$i}=$field;
2977: $i++;
2978: }
2979: }
2980: return %components;
2981: }
2982:
2983: ######################################################
2984: ######################################################
2985:
2986: =pod
2987:
2988: =item * upfile_select_html()
2989:
2990: Return HTML code to select a file from the users machine and specify
2991: the file type.
2992:
2993: =cut
2994:
2995: ######################################################
2996: ######################################################
2997: sub upfile_select_html {
2998: my %Types = (
2999: csv => &mt('CSV (comma separated values, spreadsheet)'),
3000: space => &mt('Space separated'),
3001: tab => &mt('Tabulator separated'),
3002: # xml => &mt('HTML/XML'),
3003: );
3004: my $Str = '<input type="file" name="upfile" size="50" />'.
3005: '<br />Type: <select name="upfiletype">';
3006: foreach my $type (sort(keys(%Types))) {
3007: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3008: }
3009: $Str .= "</select>\n";
3010: return $Str;
3011: }
3012:
3013: ######################################################
3014: ######################################################
3015:
3016: =pod
3017:
3018: =item * csv_print_samples($r,$records)
3019:
3020: Prints a table of sample values from each column uploaded $r is an
3021: Apache Request ref, $records is an arrayref from
3022: &Apache::loncommon::upfile_record_sep
3023:
3024: =cut
3025:
3026: ######################################################
3027: ######################################################
3028: sub csv_print_samples {
3029: my ($r,$records) = @_;
3030: my (%sone,%stwo,%sthree);
3031: %sone=&record_sep($$records[0]);
3032: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3033: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3034: #
3035: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3036: foreach (sort({$a <=> $b} keys(%sone))) {
3037: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3038: $r->print('</tr>');
3039: foreach my $hash (\%sone,\%stwo,\%sthree) {
3040: $r->print('<tr>');
3041: foreach (sort({$a <=> $b} keys(%sone))) {
3042: $r->print('<td>');
3043: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3044: $r->print('</td>');
3045: }
3046: $r->print('</tr>');
3047: }
3048: $r->print('</tr></table><br />'."\n");
3049: }
3050:
3051: ######################################################
3052: ######################################################
3053:
3054: =pod
3055:
3056: =item * csv_print_select_table($r,$records,$d)
3057:
3058: Prints a table to create associations between values and table columns.
3059:
3060: $r is an Apache Request ref,
3061: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3062: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3063:
3064: =cut
3065:
3066: ######################################################
3067: ######################################################
3068: sub csv_print_select_table {
3069: my ($r,$records,$d) = @_;
3070: my $i=0;my %sone;
3071: %sone=&record_sep($$records[0]);
3072: $r->print(&mt('Associate columns with student attributes.')."\n".
3073: '<table border="2"><tr>'.
3074: '<th>'.&mt('Attribute').'</th>'.
3075: '<th>'.&mt('Column').'</th></tr>'."\n");
3076: foreach (@$d) {
3077: my ($value,$display,$defaultcol)=@{ $_ };
3078: $r->print('<tr><td>'.$display.'</td>');
3079:
3080: $r->print('<td><select name=f'.$i.
3081: ' onchange="javascript:flip(this.form,'.$i.');">');
3082: $r->print('<option value="none"></option>');
3083: foreach (sort({$a <=> $b} keys(%sone))) {
3084: $r->print('<option value="'.$_.'"'.
3085: ($_ eq $defaultcol ? ' selected ' : '').
3086: '>Column '.($_+1).'</option>');
3087: }
3088: $r->print('</select></td></tr>'."\n");
3089: $i++;
3090: }
3091: $i--;
3092: return $i;
3093: }
3094:
3095: ######################################################
3096: ######################################################
3097:
3098: =pod
3099:
3100: =item * csv_samples_select_table($r,$records,$d)
3101:
3102: Prints a table of sample values from the upload and can make associate samples to internal names.
3103:
3104: $r is an Apache Request ref,
3105: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3106: $d is an array of 2 element arrays (internal name, displayed name)
3107:
3108: =cut
3109:
3110: ######################################################
3111: ######################################################
3112: sub csv_samples_select_table {
3113: my ($r,$records,$d) = @_;
3114: my %sone; my %stwo; my %sthree;
3115: my $i=0;
3116: #
3117: $r->print('<table border=2><tr><th>'.
3118: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3119: %sone=&record_sep($$records[0]);
3120: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3121: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3122: #
3123: foreach (sort keys %sone) {
3124: $r->print('<tr><td><select name="f'.$i.'"'.
3125: ' onchange="javascript:flip(this.form,'.$i.');">');
3126: foreach (@$d) {
3127: my ($value,$display,$defaultcol)=@{ $_ };
3128: $r->print('<option value="'.$value.'"'.
3129: ($i eq $defaultcol ? ' selected ':'').'>'.
3130: $display.'</option>');
3131: }
3132: $r->print('</select></td><td>');
3133: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3134: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3135: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3136: $r->print('</td></tr>');
3137: $i++;
3138: }
3139: $i--;
3140: return($i);
3141: }
3142:
3143: ######################################################
3144: ######################################################
3145:
3146: =pod
3147:
3148: =item clean_excel_name($name)
3149:
3150: Returns a replacement for $name which does not contain any illegal characters.
3151:
3152: =cut
3153:
3154: ######################################################
3155: ######################################################
3156: sub clean_excel_name {
3157: my ($name) = @_;
3158: $name =~ s/[:\*\?\/\\]//g;
3159: if (length($name) > 31) {
3160: $name = substr($name,0,31);
3161: }
3162: return $name;
3163: }
3164:
3165: =pod
3166:
3167: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3168:
3169: Returns either 1 or undef
3170:
3171: 1 if the part is to be hidden, undef if it is to be shown
3172:
3173: Arguments are:
3174:
3175: $id the id of the part to be checked
3176: $symb, optional the symb of the resource to check
3177: $udom, optional the domain of the user to check for
3178: $uname, optional the username of the user to check for
3179:
3180: =cut
3181:
3182: sub check_if_partid_hidden {
3183: my ($id,$symb,$udom,$uname) = @_;
3184: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3185: $symb,$udom,$uname);
3186: my $truth=1;
3187: #if the string starts with !, then the list is the list to show not hide
3188: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3189: my @hiddenlist=split(/,/,$hiddenparts);
3190: foreach my $checkid (@hiddenlist) {
3191: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3192: }
3193: return !$truth;
3194: }
3195:
3196:
3197: ############################################################
3198: ############################################################
3199:
3200: =pod
3201:
3202: =back
3203:
3204: =head1 cgi-bin script and graphing routines
3205:
3206: =over 4
3207:
3208: =item get_cgi_id
3209:
3210: Inputs: none
3211:
3212: Returns an id which can be used to pass environment variables
3213: to various cgi-bin scripts. These environment variables will
3214: be removed from the users environment after a given time by
3215: the routine &Apache::lonnet::transfer_profile_to_env.
3216:
3217: =cut
3218:
3219: ############################################################
3220: ############################################################
3221: my $uniq=0;
3222: sub get_cgi_id {
3223: $uniq=($uniq+1)%100000;
3224: return (time.'_'.$uniq);
3225: }
3226:
3227: ############################################################
3228: ############################################################
3229:
3230: =pod
3231:
3232: =item DrawBarGraph
3233:
3234: Facilitates the plotting of data in a (stacked) bar graph.
3235: Puts plot definition data into the users environment in order for
3236: graph.png to plot it. Returns an <img> tag for the plot.
3237: The bars on the plot are labeled '1','2',...,'n'.
3238:
3239: Inputs:
3240:
3241: =over 4
3242:
3243: =item $Title: string, the title of the plot
3244:
3245: =item $xlabel: string, text describing the X-axis of the plot
3246:
3247: =item $ylabel: string, text describing the Y-axis of the plot
3248:
3249: =item $Max: scalar, the maximum Y value to use in the plot
3250: If $Max is < any data point, the graph will not be rendered.
3251:
3252: =item $colors: array ref holding the colors to be used for the data sets when
3253: they are plotted. If undefined, default values will be used.
3254:
3255: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3256:
3257: =item @Values: An array of array references. Each array reference holds data
3258: to be plotted in a stacked bar chart.
3259:
3260: =back
3261:
3262: Returns:
3263:
3264: An <img> tag which references graph.png and the appropriate identifying
3265: information for the plot.
3266:
3267: =cut
3268:
3269: ############################################################
3270: ############################################################
3271: sub DrawBarGraph {
3272: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3273: #
3274: if (! defined($colors)) {
3275: $colors = ['#33ff00',
3276: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3277: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3278: ];
3279: }
3280: #
3281: my $identifier = &get_cgi_id();
3282: my $id = 'cgi.'.$identifier;
3283: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3284: return '';
3285: }
3286: my $NumBars = scalar(@{$Values[0]});
3287: my %ValuesHash;
3288: my $NumSets=1;
3289: foreach my $array (@Values) {
3290: next if (! ref($array));
3291: $ValuesHash{$id.'.data.'.$NumSets++} =
3292: join(',',@$array);
3293: }
3294: #
3295: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3296: if ($NumBars < 10) {
3297: $width = 120+$NumBars*15;
3298: $xskip = 1;
3299: $bar_width = 15;
3300: } elsif ($NumBars <= 25) {
3301: $width = 120+$NumBars*11;
3302: $xskip = 5;
3303: $bar_width = 8;
3304: } elsif ($NumBars <= 50) {
3305: $width = 120+$NumBars*8;
3306: $xskip = 5;
3307: $bar_width = 4;
3308: } else {
3309: $width = 120+$NumBars*8;
3310: $xskip = 5;
3311: $bar_width = 4;
3312: }
3313: #
3314: my @Labels;
3315: if (defined($labels)) {
3316: @Labels = @$labels;
3317: } else {
3318: for (my $i=0;$i<@{$Values[0]};$i++) {
3319: push (@Labels,$i+1);
3320: }
3321: }
3322: #
3323: $Max = 1 if ($Max < 1);
3324: if ( int($Max) < $Max ) {
3325: $Max++;
3326: $Max = int($Max);
3327: }
3328: $Title = '' if (! defined($Title));
3329: $xlabel = '' if (! defined($xlabel));
3330: $ylabel = '' if (! defined($ylabel));
3331: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3332: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3333: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3334: $ValuesHash{$id.'.y_max_value'} = $Max;
3335: $ValuesHash{$id.'.NumBars'} = $NumBars;
3336: $ValuesHash{$id.'.NumSets'} = $NumSets;
3337: $ValuesHash{$id.'.PlotType'} = 'bar';
3338: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3339: $ValuesHash{$id.'.height'} = $height;
3340: $ValuesHash{$id.'.width'} = $width;
3341: $ValuesHash{$id.'.xskip'} = $xskip;
3342: $ValuesHash{$id.'.bar_width'} = $bar_width;
3343: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3344: #
3345: &Apache::lonnet::appenv(%ValuesHash);
3346: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3347: }
3348:
3349: ############################################################
3350: ############################################################
3351:
3352: =pod
3353:
3354: =item DrawXYGraph
3355:
3356: Facilitates the plotting of data in an XY graph.
3357: Puts plot definition data into the users environment in order for
3358: graph.png to plot it. Returns an <img> tag for the plot.
3359:
3360: Inputs:
3361:
3362: =over 4
3363:
3364: =item $Title: string, the title of the plot
3365:
3366: =item $xlabel: string, text describing the X-axis of the plot
3367:
3368: =item $ylabel: string, text describing the Y-axis of the plot
3369:
3370: =item $Max: scalar, the maximum Y value to use in the plot
3371: If $Max is < any data point, the graph will not be rendered.
3372:
3373: =item $colors: Array ref containing the hex color codes for the data to be
3374: plotted in. If undefined, default values will be used.
3375:
3376: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3377:
3378: =item $Ydata: Array ref containing Array refs.
3379: Each of the contained arrays will be plotted as a separate curve.
3380:
3381: =item %Values: hash indicating or overriding any default values which are
3382: passed to graph.png.
3383: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3384:
3385: =back
3386:
3387: Returns:
3388:
3389: An <img> tag which references graph.png and the appropriate identifying
3390: information for the plot.
3391:
3392: =cut
3393:
3394: ############################################################
3395: ############################################################
3396: sub DrawXYGraph {
3397: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3398: #
3399: # Create the identifier for the graph
3400: my $identifier = &get_cgi_id();
3401: my $id = 'cgi.'.$identifier;
3402: #
3403: $Title = '' if (! defined($Title));
3404: $xlabel = '' if (! defined($xlabel));
3405: $ylabel = '' if (! defined($ylabel));
3406: my %ValuesHash =
3407: (
3408: $id.'.title' => &Apache::lonnet::escape($Title),
3409: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3410: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3411: $id.'.y_max_value'=> $Max,
3412: $id.'.labels' => join(',',@$Xlabels),
3413: $id.'.PlotType' => 'XY',
3414: );
3415: #
3416: if (defined($colors) && ref($colors) eq 'ARRAY') {
3417: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3418: }
3419: #
3420: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3421: return '';
3422: }
3423: my $NumSets=1;
3424: foreach my $array (@{$Ydata}){
3425: next if (! ref($array));
3426: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3427: }
3428: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3429: #
3430: # Deal with other parameters
3431: while (my ($key,$value) = each(%Values)) {
3432: $ValuesHash{$id.'.'.$key} = $value;
3433: }
3434: #
3435: &Apache::lonnet::appenv(%ValuesHash);
3436: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3437: }
3438:
3439: ############################################################
3440: ############################################################
3441:
3442: =pod
3443:
3444: =item DrawXYYGraph
3445:
3446: Facilitates the plotting of data in an XY graph with two Y axes.
3447: Puts plot definition data into the users environment in order for
3448: graph.png to plot it. Returns an <img> tag for the plot.
3449:
3450: Inputs:
3451:
3452: =over 4
3453:
3454: =item $Title: string, the title of the plot
3455:
3456: =item $xlabel: string, text describing the X-axis of the plot
3457:
3458: =item $ylabel: string, text describing the Y-axis of the plot
3459:
3460: =item $colors: Array ref containing the hex color codes for the data to be
3461: plotted in. If undefined, default values will be used.
3462:
3463: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3464:
3465: =item $Ydata1: The first data set
3466:
3467: =item $Min1: The minimum value of the left Y-axis
3468:
3469: =item $Max1: The maximum value of the left Y-axis
3470:
3471: =item $Ydata2: The second data set
3472:
3473: =item $Min2: The minimum value of the right Y-axis
3474:
3475: =item $Max2: The maximum value of the left Y-axis
3476:
3477: =item %Values: hash indicating or overriding any default values which are
3478: passed to graph.png.
3479: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3480:
3481: =back
3482:
3483: Returns:
3484:
3485: An <img> tag which references graph.png and the appropriate identifying
3486: information for the plot.
3487:
3488: =cut
3489:
3490: ############################################################
3491: ############################################################
3492: sub DrawXYYGraph {
3493: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3494: $Ydata2,$Min2,$Max2,%Values)=@_;
3495: #
3496: # Create the identifier for the graph
3497: my $identifier = &get_cgi_id();
3498: my $id = 'cgi.'.$identifier;
3499: #
3500: $Title = '' if (! defined($Title));
3501: $xlabel = '' if (! defined($xlabel));
3502: $ylabel = '' if (! defined($ylabel));
3503: my %ValuesHash =
3504: (
3505: $id.'.title' => &Apache::lonnet::escape($Title),
3506: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3507: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3508: $id.'.labels' => join(',',@$Xlabels),
3509: $id.'.PlotType' => 'XY',
3510: $id.'.NumSets' => 2,
3511: $id.'.two_axes' => 1,
3512: $id.'.y1_max_value' => $Max1,
3513: $id.'.y1_min_value' => $Min1,
3514: $id.'.y2_max_value' => $Max2,
3515: $id.'.y2_min_value' => $Min2,
3516: );
3517: #
3518: if (defined($colors) && ref($colors) eq 'ARRAY') {
3519: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3520: }
3521: #
3522: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3523: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3524: return '';
3525: }
3526: my $NumSets=1;
3527: foreach my $array ($Ydata1,$Ydata2){
3528: next if (! ref($array));
3529: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3530: }
3531: #
3532: # Deal with other parameters
3533: while (my ($key,$value) = each(%Values)) {
3534: $ValuesHash{$id.'.'.$key} = $value;
3535: }
3536: #
3537: &Apache::lonnet::appenv(%ValuesHash);
3538: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3539: }
3540:
3541: ############################################################
3542: ############################################################
3543:
3544: =pod
3545:
3546: =back
3547:
3548: =head1 Statistics helper routines?
3549:
3550: Bad place for them but what the hell.
3551:
3552: =over 4
3553:
3554: =item &chartlink
3555:
3556: Returns a link to the chart for a specific student.
3557:
3558: Inputs:
3559:
3560: =over 4
3561:
3562: =item $linktext: The text of the link
3563:
3564: =item $sname: The students username
3565:
3566: =item $sdomain: The students domain
3567:
3568: =back
3569:
3570: =back
3571:
3572: =cut
3573:
3574: ############################################################
3575: ############################################################
3576: sub chartlink {
3577: my ($linktext, $sname, $sdomain) = @_;
3578: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3579: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3580: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3581: '">'.$linktext.'</a>';
3582: }
3583:
3584: #######################################################
3585: #######################################################
3586:
3587: =pod
3588:
3589: =head1 Course Environment Routines
3590:
3591: =over 4
3592:
3593: =item &restore_course_settings
3594:
3595: =item &store_course_settings
3596:
3597: Restores/Store indicated form parameters from the course environment.
3598: Will not overwrite existing values of the form parameters.
3599:
3600: Inputs:
3601: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3602:
3603: a hash ref describing the data to be stored. For example:
3604:
3605: %Save_Parameters = ('Status' => 'scalar',
3606: 'chartoutputmode' => 'scalar',
3607: 'chartoutputdata' => 'scalar',
3608: 'Section' => 'array',
3609: 'StudentData' => 'array',
3610: 'Maps' => 'array');
3611:
3612: Returns: both routines return nothing
3613:
3614: =cut
3615:
3616: #######################################################
3617: #######################################################
3618: sub store_course_settings {
3619: # save to the environment
3620: # appenv the same items, just to be safe
3621: my $courseid = $ENV{'request.course.id'};
3622: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3623: my ($prefix,$Settings) = @_;
3624: my %SaveHash;
3625: my %AppHash;
3626: while (my ($setting,$type) = each(%$Settings)) {
3627: my $basename = 'internal.'.$prefix.'.'.$setting;
3628: my $envname = 'course.'.$courseid.'.'.$basename;
3629: if (exists($ENV{'form.'.$setting})) {
3630: # Save this value away
3631: if ($type eq 'scalar' &&
3632: (! exists($ENV{$envname}) ||
3633: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3634: $SaveHash{$basename} = $ENV{'form.'.$setting};
3635: $AppHash{$envname} = $ENV{'form.'.$setting};
3636: } elsif ($type eq 'array') {
3637: my $stored_form;
3638: if (ref($ENV{'form.'.$setting})) {
3639: $stored_form = join(',',
3640: map {
3641: &Apache::lonnet::escape($_);
3642: } sort(@{$ENV{'form.'.$setting}}));
3643: } else {
3644: $stored_form =
3645: &Apache::lonnet::escape($ENV{'form.'.$setting});
3646: }
3647: # Determine if the array contents are the same.
3648: if ($stored_form ne $ENV{$envname}) {
3649: $SaveHash{$basename} = $stored_form;
3650: $AppHash{$envname} = $stored_form;
3651: }
3652: }
3653: }
3654: }
3655: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3656: $coursedom,
3657: $ENV{'course.'.$courseid.'.num'});
3658: if ($put_result !~ /^(ok|delayed)/) {
3659: &Apache::lonnet::logthis('unable to save form parameters, '.
3660: 'got error:'.$put_result);
3661: }
3662: # Make sure these settings stick around in this session, too
3663: &Apache::lonnet::appenv(%AppHash);
3664: return;
3665: }
3666:
3667: sub restore_course_settings {
3668: my $courseid = $ENV{'request.course.id'};
3669: my ($prefix,$Settings) = @_;
3670: while (my ($setting,$type) = each(%$Settings)) {
3671: next if (exists($ENV{'form.'.$setting}));
3672: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3673: '.'.$setting;
3674: if (exists($ENV{$envname})) {
3675: if ($type eq 'scalar') {
3676: $ENV{'form.'.$setting} = $ENV{$envname};
3677: } elsif ($type eq 'array') {
3678: $ENV{'form.'.$setting} = [
3679: map {
3680: &Apache::lonnet::unescape($_);
3681: } split(',',$ENV{$envname})
3682: ];
3683: }
3684: }
3685: }
3686: }
3687:
3688: ############################################################
3689: ############################################################
3690:
3691: sub propath {
3692: my ($udom,$uname)=@_;
3693: $udom=~s/\W//g;
3694: $uname=~s/\W//g;
3695: my $subdir=$uname.'__';
3696: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3697: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3698: return $proname;
3699: }
3700:
3701: sub icon {
3702: my ($file)=@_;
3703: my $curfext = (split(/\./,$file))[-1];
3704: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3705: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3706: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3707: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3708: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3709: $curfext.".gif") {
3710: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3711: $curfext.".gif";
3712: }
3713: }
3714: return $iconname;
3715: }
3716:
3717: sub lonhttpdurl {
3718: my ($url)=@_;
3719: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
3720: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
3721: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
3722: }
3723:
3724: sub connection_aborted {
3725: my ($r)=@_;
3726: $r->print(" ");$r->rflush();
3727: my $c = $r->connection;
3728: return $c->aborted();
3729: }
3730:
3731: =pod
3732:
3733: =back
3734:
3735: =cut
3736:
3737: 1;
3738: __END__;
3739:
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