1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.330 2006/04/11 18:43:46 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::lonmenu();
62: use Apache::lonlocal;
63: use HTML::Entities;
64:
65: my $readit;
66:
67: ##
68: ## Global Variables
69: ##
70:
71: # ----------------------------------------------- Filetypes/Languages/Copyright
72: my %language;
73: my %supported_language;
74: my %cprtag;
75: my %scprtag;
76: my %fe; my %fd;
77: my %category_extensions;
78:
79: # ---------------------------------------------- Designs
80:
81: my %designhash;
82:
83: # ---------------------------------------------- Thesaurus variables
84: #
85: # %Keywords:
86: # A hash used by &keyword to determine if a word is considered a keyword.
87: # $thesaurus_db_file
88: # Scalar containing the full path to the thesaurus database.
89:
90: my %Keywords;
91: my $thesaurus_db_file;
92:
93: #
94: # Initialize values from language.tab, copyright.tab, filetypes.tab,
95: # thesaurus.tab, and filecategories.tab.
96: #
97: BEGIN {
98: # Variable initialization
99: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
100: #
101: unless ($readit) {
102: # ------------------------------------------------------------------- languages
103: {
104: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
105: '/language.tab';
106: if ( open(my $fh,"<$langtabfile") ) {
107: while (<$fh>) {
108: next if /^\#/;
109: chomp;
110: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
111: $language{$key}=$val.' - '.$enc;
112: if ($sup) {
113: $supported_language{$key}=$sup;
114: }
115: }
116: close($fh);
117: }
118: }
119: # ------------------------------------------------------------------ copyrights
120: {
121: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
122: '/copyright.tab';
123: if ( open (my $fh,"<$copyrightfile") ) {
124: while (<$fh>) {
125: next if /^\#/;
126: chomp;
127: my ($key,$val)=(split(/\s+/,$_,2));
128: $cprtag{$key}=$val;
129: }
130: close($fh);
131: }
132: }
133: # ------------------------------------------------------------------ source copyrights
134: {
135: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
136: '/source_copyright.tab';
137: if ( open (my $fh,"<$sourcecopyrightfile") ) {
138: while (<$fh>) {
139: next if /^\#/;
140: chomp;
141: my ($key,$val)=(split(/\s+/,$_,2));
142: $scprtag{$key}=$val;
143: }
144: close($fh);
145: }
146: }
147:
148: # -------------------------------------------------------------- domain designs
149:
150: my $filename;
151: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
152: opendir(DIR,$designdir);
153: while ($filename=readdir(DIR)) {
154: if ($filename!~/\.tab$/) { next; }
155: my ($domain)=($filename=~/^(\w+)\./);
156: {
157: my $designfile = $designdir.'/'.$filename;
158: if ( open (my $fh,"<$designfile") ) {
159: while (<$fh>) {
160: next if /^\#/;
161: chomp;
162: my ($key,$val)=(split(/\=/,$_));
163: if ($val) { $designhash{$domain.'.'.$key}=$val; }
164: }
165: close($fh);
166: }
167: }
168:
169: }
170: closedir(DIR);
171:
172:
173: # ------------------------------------------------------------- file categories
174: {
175: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
176: '/filecategories.tab';
177: if ( open (my $fh,"<$categoryfile") ) {
178: while (<$fh>) {
179: next if /^\#/;
180: chomp;
181: my ($extension,$category)=(split(/\s+/,$_,2));
182: push @{$category_extensions{lc($category)}},$extension;
183: }
184: close($fh);
185: }
186:
187: }
188: # ------------------------------------------------------------------ file types
189: {
190: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
191: '/filetypes.tab';
192: if ( open (my $fh,"<$typesfile") ) {
193: while (<$fh>) {
194: next if (/^\#/);
195: chomp;
196: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
197: if ($descr ne '') {
198: $fe{$ending}=lc($emb);
199: $fd{$ending}=$descr;
200: }
201: }
202: close($fh);
203: }
204: }
205: &Apache::lonnet::logthis(
206: "<font color=yellow>INFO: Read file types</font>");
207: $readit=1;
208: } # end of unless($readit)
209:
210: }
211:
212: ###############################################################
213: ## HTML and Javascript Helper Functions ##
214: ###############################################################
215:
216: =pod
217:
218: =head1 HTML and Javascript Functions
219:
220: =over 4
221:
222: =item * browser_and_searcher_javascript ()
223:
224: X<browsing, javascript>X<searching, javascript>Returns a string
225: containing javascript with two functions, C<openbrowser> and
226: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
227: tags.
228:
229: =item * openbrowser(formname,elementname,only,omit) [javascript]
230:
231: inputs: formname, elementname, only, omit
232:
233: formname and elementname indicate the name of the html form and name of
234: the element that the results of the browsing selection are to be placed in.
235:
236: Specifying 'only' will restrict the browser to displaying only files
237: with the given extension. Can be a comma separated list.
238:
239: Specifying 'omit' will restrict the browser to NOT displaying files
240: with the given extension. Can be a comma separated list.
241:
242: =item * opensearcher(formname, elementname) [javascript]
243:
244: Inputs: formname, elementname
245:
246: formname and elementname specify the name of the html form and the name
247: of the element the selection from the search results will be placed in.
248:
249: =cut
250:
251: sub browser_and_searcher_javascript {
252: my ($mode)=@_;
253: if (!defined($mode)) { $mode='edit'; }
254: my $resurl=&lastresurl();
255: return <<END;
256: // <!-- BEGIN LON-CAPA Internal
257: var editbrowser = null;
258: function openbrowser(formname,elementname,only,omit,titleelement) {
259: var url = '$resurl/?';
260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
264: url += 'mode=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: } else {
269: url += 'only=&';
270: }
271: if (omit != null) {
272: url += 'omit=' + omit + '&';
273: } else {
274: url += 'omit=&';
275: }
276: if (titleelement != null) {
277: url += 'titleelement=' + titleelement + '&';
278: } else {
279: url += 'titleelement=&';
280: }
281: url += 'element=' + elementname + '';
282: var title = 'Browser';
283: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
284: options += ',width=700,height=600';
285: editbrowser = open(url,title,options,'1');
286: editbrowser.focus();
287: }
288: var editsearcher;
289: function opensearcher(formname,elementname,titleelement) {
290: var url = '/adm/searchcat?';
291: if (editsearcher == null) {
292: url += 'launch=1&';
293: }
294: url += 'catalogmode=interactive&';
295: url += 'mode=$mode&';
296: url += 'form=' + formname + '&';
297: if (titleelement != null) {
298: url += 'titleelement=' + titleelement + '&';
299: } else {
300: url += 'titleelement=&';
301: }
302: url += 'element=' + elementname + '';
303: var title = 'Search';
304: var options = 'scrollbars=1,resizable=1,menubar=0';
305: options += ',width=700,height=600';
306: editsearcher = open(url,title,options,'1');
307: editsearcher.focus();
308: }
309: // END LON-CAPA Internal -->
310: END
311: }
312:
313: sub lastresurl {
314: if ($env{'environment.lastresurl'}) {
315: return $env{'environment.lastresurl'}
316: } else {
317: return '/res';
318: }
319: }
320:
321: sub storeresurl {
322: my $resurl=&Apache::lonnet::clutter(shift);
323: unless ($resurl=~/^\/res/) { return 0; }
324: $resurl=~s/\/$//;
325: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
326: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
327: return 1;
328: }
329:
330: sub studentbrowser_javascript {
331: unless (
332: (($env{'request.course.id'}) &&
333: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
334: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
335: '/'.$env{'request.course.sec'})
336: ))
337: || ($env{'request.role'}=~/^(au|dc|su)/)
338: ) { return ''; }
339: return (<<'ENDSTDBRW');
340: <script type="text/javascript" language="Javascript" >
341: var stdeditbrowser;
342: function openstdbrowser(formname,uname,udom,roleflag) {
343: var url = '/adm/pickstudent?';
344: var filter;
345: eval('filter=document.'+formname+'.'+uname+'.value;');
346: if (filter != null) {
347: if (filter != '') {
348: url += 'filter='+filter+'&';
349: }
350: }
351: url += 'form=' + formname + '&unameelement='+uname+
352: '&udomelement='+udom;
353: if (roleflag) { url+="&roles=1"; }
354: var title = 'Student_Browser';
355: var options = 'scrollbars=1,resizable=1,menubar=0';
356: options += ',width=700,height=600';
357: stdeditbrowser = open(url,title,options,'1');
358: stdeditbrowser.focus();
359: }
360: </script>
361: ENDSTDBRW
362: }
363:
364: sub selectstudent_link {
365: my ($form,$unameele,$udomele)=@_;
366: if ($env{'request.course.id'}) {
367: if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
368: && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
369: '/'.$env{'request.course.sec'})) {
370: return '';
371: }
372: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
373: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
374: }
375: if ($env{'request.role'}=~/^(au|dc|su)/) {
376: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
377: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
378: }
379: return '';
380: }
381:
382: sub coursebrowser_javascript {
383: my ($domainfilter)=@_;
384: return (<<ENDSTDBRW);
385: <script type="text/javascript" language="Javascript" >
386: var stdeditbrowser;
387: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
388: var url = '/adm/pickcourse?';
389: var filter;
390: if (filter != null) {
391: if (filter != '') {
392: url += 'filter='+filter+'&';
393: }
394: }
395: var domainfilter='$domainfilter';
396: if (domainfilter != null) {
397: if (domainfilter != '') {
398: url += 'domainfilter='+domainfilter+'&';
399: }
400: }
401: url += 'form=' + formname + '&cnumelement='+uname+
402: '&cdomelement='+udom+
403: '&cnameelement='+desc;
404: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
405: url += '&roleelement='+extra_element;
406: if (domainfilter == null || domainfilter == '') {
407: url += '&domainfilter='+extra_element;
408: }
409: }
410: if (multflag !=null && multflag != '') {
411: url += '&multiple='+multflag;
412: }
413: var title = 'Course_Browser';
414: var options = 'scrollbars=1,resizable=1,menubar=0';
415: options += ',width=700,height=600';
416: stdeditbrowser = open(url,title,options,'1');
417: stdeditbrowser.focus();
418: }
419: </script>
420: ENDSTDBRW
421: }
422:
423: sub selectcourse_link {
424: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
425: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
426: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
427: }
428:
429: sub check_uncheck_jscript {
430: my $jscript = <<"ENDSCRT";
431: function checkAll(field) {
432: if (field.length > 0) {
433: for (i = 0; i < field.length; i++) {
434: field[i].checked = true ;
435: }
436: } else {
437: field.checked = true
438: }
439: }
440:
441: function uncheckAll(field) {
442: if (field.length > 0) {
443: for (i = 0; i < field.length; i++) {
444: field[i].checked = false ;
445: } } else {
446: field.checked = false ;
447: }
448: }
449: ENDSCRT
450: return $jscript;
451: }
452:
453:
454: =pod
455:
456: =item * linked_select_forms(...)
457:
458: linked_select_forms returns a string containing a <script></script> block
459: and html for two <select> menus. The select menus will be linked in that
460: changing the value of the first menu will result in new values being placed
461: in the second menu. The values in the select menu will appear in alphabetical
462: order.
463:
464: linked_select_forms takes the following ordered inputs:
465:
466: =over 4
467:
468: =item * $formname, the name of the <form> tag
469:
470: =item * $middletext, the text which appears between the <select> tags
471:
472: =item * $firstdefault, the default value for the first menu
473:
474: =item * $firstselectname, the name of the first <select> tag
475:
476: =item * $secondselectname, the name of the second <select> tag
477:
478: =item * $hashref, a reference to a hash containing the data for the menus.
479:
480: =back
481:
482: Below is an example of such a hash. Only the 'text', 'default', and
483: 'select2' keys must appear as stated. keys(%menu) are the possible
484: values for the first select menu. The text that coincides with the
485: first menu value is given in $menu{$choice1}->{'text'}. The values
486: and text for the second menu are given in the hash pointed to by
487: $menu{$choice1}->{'select2'}.
488:
489: my %menu = ( A1 => { text =>"Choice A1" ,
490: default => "B3",
491: select2 => {
492: B1 => "Choice B1",
493: B2 => "Choice B2",
494: B3 => "Choice B3",
495: B4 => "Choice B4"
496: }
497: },
498: A2 => { text =>"Choice A2" ,
499: default => "C2",
500: select2 => {
501: C1 => "Choice C1",
502: C2 => "Choice C2",
503: C3 => "Choice C3"
504: }
505: },
506: A3 => { text =>"Choice A3" ,
507: default => "D6",
508: select2 => {
509: D1 => "Choice D1",
510: D2 => "Choice D2",
511: D3 => "Choice D3",
512: D4 => "Choice D4",
513: D5 => "Choice D5",
514: D6 => "Choice D6",
515: D7 => "Choice D7"
516: }
517: }
518: );
519:
520: =cut
521:
522: sub linked_select_forms {
523: my ($formname,
524: $middletext,
525: $firstdefault,
526: $firstselectname,
527: $secondselectname,
528: $hashref
529: ) = @_;
530: my $second = "document.$formname.$secondselectname";
531: my $first = "document.$formname.$firstselectname";
532: # output the javascript to do the changing
533: my $result = '';
534: $result.="<script type=\"text/javascript\">\n";
535: $result.="var select2data = new Object();\n";
536: $" = '","';
537: my $debug = '';
538: foreach my $s1 (sort(keys(%$hashref))) {
539: $result.="select2data.d_$s1 = new Object();\n";
540: $result.="select2data.d_$s1.def = new String('".
541: $hashref->{$s1}->{'default'}."');\n";
542: $result.="select2data.d_$s1.values = new Array(";
543: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
544: $result.="\"@s2values\");\n";
545: $result.="select2data.d_$s1.texts = new Array(";
546: my @s2texts;
547: foreach my $value (@s2values) {
548: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
549: }
550: $result.="\"@s2texts\");\n";
551: }
552: $"=' ';
553: $result.= <<"END";
554:
555: function select1_changed() {
556: // Determine new choice
557: var newvalue = "d_" + $first.value;
558: // update select2
559: var values = select2data[newvalue].values;
560: var texts = select2data[newvalue].texts;
561: var select2def = select2data[newvalue].def;
562: var i;
563: // out with the old
564: for (i = 0; i < $second.options.length; i++) {
565: $second.options[i] = null;
566: }
567: // in with the nuclear
568: for (i=0;i<values.length; i++) {
569: $second.options[i] = new Option(values[i]);
570: $second.options[i].value = values[i];
571: $second.options[i].text = texts[i];
572: if (values[i] == select2def) {
573: $second.options[i].selected = true;
574: }
575: }
576: }
577: </script>
578: END
579: # output the initial values for the selection lists
580: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
581: foreach my $value (sort(keys(%$hashref))) {
582: $result.=" <option value=\"$value\" ";
583: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
584: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
585: }
586: $result .= "</select>\n";
587: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
588: $result .= $middletext;
589: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
590: my $seconddefault = $hashref->{$firstdefault}->{'default'};
591: foreach my $value (sort(keys(%select2))) {
592: $result.=" <option value=\"$value\" ";
593: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
594: $result.=">".&mt($select2{$value})."</option>\n";
595: }
596: $result .= "</select>\n";
597: # return $debug;
598: return $result;
599: } # end of sub linked_select_forms {
600:
601: =pod
602:
603: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
604:
605: Returns a string corresponding to an HTML link to the given help
606: $topic, where $topic corresponds to the name of a .tex file in
607: /home/httpd/html/adm/help/tex, with underscores replaced by
608: spaces.
609:
610: $text will optionally be linked to the same topic, allowing you to
611: link text in addition to the graphic. If you do not want to link
612: text, but wish to specify one of the later parameters, pass an
613: empty string.
614:
615: $stayOnPage is a value that will be interpreted as a boolean. If true,
616: the link will not open a new window. If false, the link will open
617: a new window using Javascript. (Default is false.)
618:
619: $width and $height are optional numerical parameters that will
620: override the width and height of the popped up window, which may
621: be useful for certain help topics with big pictures included.
622:
623: =cut
624:
625: sub help_open_topic {
626: my ($topic, $text, $stayOnPage, $width, $height) = @_;
627: $text = "" if (not defined $text);
628: $stayOnPage = 0 if (not defined $stayOnPage);
629: if ($env{'browser.interface'} eq 'textual' ||
630: $env{'environment.remote'} eq 'off' ) {
631: $stayOnPage=1;
632: }
633: $width = 350 if (not defined $width);
634: $height = 400 if (not defined $height);
635: my $filename = $topic;
636: $filename =~ s/ /_/g;
637:
638: my $template = "";
639: my $link;
640:
641: $topic=~s/\W/\_/g;
642:
643: if (!$stayOnPage)
644: {
645: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
646: }
647: else
648: {
649: $link = "/adm/help/${filename}.hlp";
650: }
651:
652: # Add the text
653: if ($text ne "")
654: {
655: $template .=
656: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
657: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
658: }
659:
660: # Add the graphic
661: my $title = &mt('Online Help');
662: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
663: $template .= <<"ENDTEMPLATE";
664: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
665: ENDTEMPLATE
666: if ($text ne '') { $template.='</td></tr></table>' };
667: return $template;
668:
669: }
670:
671: # This is a quicky function for Latex cheatsheet editing, since it
672: # appears in at least four places
673: sub helpLatexCheatsheet {
674: my $other = shift;
675: my $addOther = '';
676: if ($other) {
677: $addOther = Apache::loncommon::help_open_topic($other, shift,
678: undef, undef, 600) .
679: '</td><td>';
680: }
681: return '<table><tr><td>'.
682: $addOther .
683: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
684: undef,undef,600)
685: .'</td><td>'.
686: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
687: undef,undef,600)
688: .'</td></tr></table>';
689: }
690:
691: sub help_open_menu {
692: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
693: $text = "" if (not defined $text);
694: $stayOnPage = 0 if (not defined $stayOnPage);
695: if ($env{'browser.interface'} eq 'textual' ||
696: $env{'environment.remote'} eq 'off' ) {
697: $stayOnPage=1;
698: }
699: $width = 620 if (not defined $width);
700: $height = 600 if (not defined $height);
701: my $link='';
702: my $title = &mt('Get help');
703: my $origurl = $ENV{'REQUEST_URI'};
704: $origurl=~s|^/~|/priv/|;
705: my $timestamp = time;
706: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
707: $$_ = &Apache::lonnet::escape($$_);
708: }
709: if (!$stayOnPage) {
710: $link = "javascript:helpMenu('open')";
711: } else {
712: $link = "javascript:helpMenu('display')";
713: }
714: 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";
715: 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";
716: my $template;
717: if ($text ne "") {
718: $template .=
719: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
720: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
721: }
722: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
723: my $html=&Apache::lonxml::xmlbegin();
724: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
725: $template .= <<"ENDTEMPLATE";
726: <script type="text/javascript">
727: // <!-- BEGIN LON-CAPA Internal
728: // <![CDATA[
729: function helpMenu(target) {
730: var caller = this;
731: if (target == 'open') {
732: var newWindow = null;
733: try {
734: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
735: }
736: catch(error) {
737: writeHelp(caller);
738: return;
739: }
740: if (newWindow) {
741: caller = newWindow;
742: }
743: }
744: writeHelp(caller);
745: return;
746: }
747: function writeHelp(caller) {
748: caller.document.writeln('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
749: caller.document.writeln("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
750: caller.document.writeln("</html>")
751: caller.document.close()
752: caller.focus()
753: }
754: // ]]>
755: // END LON-CAPA Internal -->
756: </script>
757: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
758: ENDTEMPLATE
759: if ($component_help) {
760: if (!$text) {
761: $template=&help_open_topic($component_help,undef,$stayOnPage,
762: $width,$height).' '.$template;
763: } else {
764: my $help_text;
765: $help_text=&Apache::lonnet::unescape($topic);
766: $template='<table><tr><td>'.
767: &help_open_topic($component_help,$help_text,$stayOnPage,
768: $width,$height).'</td><td>'.$template.
769: '</td></tr></table>';
770: }
771: }
772: if ($text ne '') { $template.='</td></tr></table>' };
773: return $template;
774: }
775:
776: sub help_open_bug {
777: my ($topic, $text, $stayOnPage, $width, $height) = @_;
778: unless ($env{'user.adv'}) { return ''; }
779: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
780: $text = "" if (not defined $text);
781: $stayOnPage = 0 if (not defined $stayOnPage);
782: if ($env{'browser.interface'} eq 'textual' ||
783: $env{'environment.remote'} eq 'off' ) {
784: $stayOnPage=1;
785: }
786: $width = 600 if (not defined $width);
787: $height = 600 if (not defined $height);
788:
789: $topic=~s/\W+/\+/g;
790: my $link='';
791: my $template='';
792: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
793: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
794: if (!$stayOnPage)
795: {
796: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
797: }
798: else
799: {
800: $link = $url;
801: }
802: # Add the text
803: if ($text ne "")
804: {
805: $template .=
806: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
807: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
808: }
809:
810: # Add the graphic
811: my $title = &mt('Report a Bug');
812: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
813: $template .= <<"ENDTEMPLATE";
814: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
815: ENDTEMPLATE
816: if ($text ne '') { $template.='</td></tr></table>' };
817: return $template;
818:
819: }
820:
821: sub help_open_faq {
822: my ($topic, $text, $stayOnPage, $width, $height) = @_;
823: unless ($env{'user.adv'}) { return ''; }
824: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
825: $text = "" if (not defined $text);
826: $stayOnPage = 0 if (not defined $stayOnPage);
827: if ($env{'browser.interface'} eq 'textual' ||
828: $env{'environment.remote'} eq 'off' ) {
829: $stayOnPage=1;
830: }
831: $width = 350 if (not defined $width);
832: $height = 400 if (not defined $height);
833:
834: $topic=~s/\W+/\+/g;
835: my $link='';
836: my $template='';
837: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
838: if (!$stayOnPage)
839: {
840: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
841: }
842: else
843: {
844: $link = $url;
845: }
846:
847: # Add the text
848: if ($text ne "")
849: {
850: $template .=
851: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
852: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
853: }
854:
855: # Add the graphic
856: my $title = &mt('View the FAQ');
857: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
858: $template .= <<"ENDTEMPLATE";
859: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
860: ENDTEMPLATE
861: if ($text ne '') { $template.='</td></tr></table>' };
862: return $template;
863:
864: }
865:
866: ###############################################################
867: ###############################################################
868:
869: =pod
870:
871: =item * change_content_javascript():
872:
873: This and the next function allow you to create small sections of an
874: otherwise static HTML page that you can update on the fly with
875: Javascript, even in Netscape 4.
876:
877: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
878: must be written to the HTML page once. It will prove the Javascript
879: function "change(name, content)". Calling the change function with the
880: name of the section
881: you want to update, matching the name passed to C<changable_area>, and
882: the new content you want to put in there, will put the content into
883: that area.
884:
885: B<Note>: Netscape 4 only reserves enough space for the changable area
886: to contain room for the original contents. You need to "make space"
887: for whatever changes you wish to make, and be B<sure> to check your
888: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
889: it's adequate for updating a one-line status display, but little more.
890: This script will set the space to 100% width, so you only need to
891: worry about height in Netscape 4.
892:
893: Modern browsers are much less limiting, and if you can commit to the
894: user not using Netscape 4, this feature may be used freely with
895: pretty much any HTML.
896:
897: =cut
898:
899: sub change_content_javascript {
900: # If we're on Netscape 4, we need to use Layer-based code
901: if ($env{'browser.type'} eq 'netscape' &&
902: $env{'browser.version'} =~ /^4\./) {
903: return (<<NETSCAPE4);
904: function change(name, content) {
905: doc = document.layers[name+"___escape"].layers[0].document;
906: doc.open();
907: doc.write(content);
908: doc.close();
909: }
910: NETSCAPE4
911: } else {
912: # Otherwise, we need to use semi-standards-compliant code
913: # (technically, "innerHTML" isn't standard but the equivalent
914: # is really scary, and every useful browser supports it
915: return (<<DOMBASED);
916: function change(name, content) {
917: element = document.getElementById(name);
918: element.innerHTML = content;
919: }
920: DOMBASED
921: }
922: }
923:
924: =pod
925:
926: =item * changable_area($name, $origContent):
927:
928: This provides a "changable area" that can be modified on the fly via
929: the Javascript code provided in C<change_content_javascript>. $name is
930: the name you will use to reference the area later; do not repeat the
931: same name on a given HTML page more then once. $origContent is what
932: the area will originally contain, which can be left blank.
933:
934: =cut
935:
936: sub changable_area {
937: my ($name, $origContent) = @_;
938:
939: if ($env{'browser.type'} eq 'netscape' &&
940: $env{'browser.version'} =~ /^4\./) {
941: # If this is netscape 4, we need to use the Layer tag
942: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
943: } else {
944: return "<span id='$name'>$origContent</span>";
945: }
946: }
947:
948: =pod
949:
950: =back
951:
952: =head1 Excel and CSV file utility routines
953:
954: =over 4
955:
956: =cut
957:
958: ###############################################################
959: ###############################################################
960:
961: =pod
962:
963: =item * csv_translate($text)
964:
965: Translate $text to allow it to be output as a 'comma separated values'
966: format.
967:
968: =cut
969:
970: ###############################################################
971: ###############################################################
972: sub csv_translate {
973: my $text = shift;
974: $text =~ s/\"/\"\"/g;
975: $text =~ s/\n/ /g;
976: return $text;
977: }
978:
979: ###############################################################
980: ###############################################################
981:
982: =pod
983:
984: =item * define_excel_formats
985:
986: Define some commonly used Excel cell formats.
987:
988: Currently supported formats:
989:
990: =over 4
991:
992: =item header
993:
994: =item bold
995:
996: =item h1
997:
998: =item h2
999:
1000: =item h3
1001:
1002: =item h4
1003:
1004: =item i
1005:
1006: =item date
1007:
1008: =back
1009:
1010: Inputs: $workbook
1011:
1012: Returns: $format, a hash reference.
1013:
1014: =cut
1015:
1016: ###############################################################
1017: ###############################################################
1018: sub define_excel_formats {
1019: my ($workbook) = @_;
1020: my $format;
1021: $format->{'header'} = $workbook->add_format(bold => 1,
1022: bottom => 1,
1023: align => 'center');
1024: $format->{'bold'} = $workbook->add_format(bold=>1);
1025: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1026: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1027: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1028: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1029: $format->{'i'} = $workbook->add_format(italic=>1);
1030: $format->{'date'} = $workbook->add_format(num_format=>
1031: 'mm/dd/yyyy hh:mm:ss');
1032: return $format;
1033: }
1034:
1035: ###############################################################
1036: ###############################################################
1037:
1038: =pod
1039:
1040: =item * create_workbook
1041:
1042: Create an Excel worksheet. If it fails, output message on the
1043: request object and return undefs.
1044:
1045: Inputs: Apache request object
1046:
1047: Returns (undef) on failure,
1048: Excel worksheet object, scalar with filename, and formats
1049: from &Apache::loncommon::define_excel_formats on success
1050:
1051: =cut
1052:
1053: ###############################################################
1054: ###############################################################
1055: sub create_workbook {
1056: my ($r) = @_;
1057: #
1058: # Create the excel spreadsheet
1059: my $filename = '/prtspool/'.
1060: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1061: time.'_'.rand(1000000000).'.xls';
1062: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1063: if (! defined($workbook)) {
1064: $r->log_error("Error creating excel spreadsheet $filename: $!");
1065: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1066: "This error has been logged. ".
1067: "Please alert your LON-CAPA administrator").
1068: '</p>');
1069: return (undef);
1070: }
1071: #
1072: $workbook->set_tempdir('/home/httpd/perl/tmp');
1073: #
1074: my $format = &Apache::loncommon::define_excel_formats($workbook);
1075: return ($workbook,$filename,$format);
1076: }
1077:
1078: ###############################################################
1079: ###############################################################
1080:
1081: =pod
1082:
1083: =item * create_text_file
1084:
1085: Create a file to write to and eventually make available to the usre.
1086: If file creation fails, outputs an error message on the request object and
1087: return undefs.
1088:
1089: Inputs: Apache request object, and file suffix
1090:
1091: Returns (undef) on failure,
1092: Filehandle and filename on success.
1093:
1094: =cut
1095:
1096: ###############################################################
1097: ###############################################################
1098: sub create_text_file {
1099: my ($r,$suffix) = @_;
1100: if (! defined($suffix)) { $suffix = 'txt'; };
1101: my $fh;
1102: my $filename = '/prtspool/'.
1103: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1104: time.'_'.rand(1000000000).'.'.$suffix;
1105: $fh = Apache::File->new('>/home/httpd'.$filename);
1106: if (! defined($fh)) {
1107: $r->log_error("Couldn't open $filename for output $!");
1108: $r->print("Problems occured in creating the output file. ".
1109: "This error has been logged. ".
1110: "Please alert your LON-CAPA administrator.");
1111: }
1112: return ($fh,$filename)
1113: }
1114:
1115:
1116: =pod
1117:
1118: =back
1119:
1120: =cut
1121:
1122: ###############################################################
1123: ## Home server <option> list generating code ##
1124: ###############################################################
1125:
1126: =pod
1127:
1128: =head1 Home Server option list generating code
1129:
1130: =over 4
1131:
1132: =item * get_domains()
1133:
1134: Returns an array containing each of the domains listed in the hosts.tab
1135: file.
1136:
1137: =cut
1138:
1139: #-------------------------------------------
1140: sub get_domains {
1141: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1142: my @domains;
1143: my %seen;
1144: foreach (sort values(%Apache::lonnet::hostdom)) {
1145: push (@domains,$_) unless $seen{$_}++;
1146: }
1147: return @domains;
1148: }
1149:
1150: # ------------------------------------------
1151:
1152: sub domain_select {
1153: my ($name,$value,$multiple)=@_;
1154: my %domains=map {
1155: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1156: } &get_domains;
1157: if ($multiple) {
1158: $domains{''}=&mt('Any domain');
1159: return &multiple_select_form($name,$value,4,\%domains);
1160: } else {
1161: return &select_form($name,$value,%domains);
1162: }
1163: }
1164:
1165: #-------------------------------------------
1166:
1167: =pod
1168:
1169: =item * multiple_select_form($name,$value,$size,$hash,$order)
1170:
1171: Returns a string containing a <select> element int multiple mode
1172:
1173:
1174: Args:
1175: $name - name of the <select> element
1176: $value - sclara or array ref of values that should already be selected
1177: $size - number of rows long the select element is
1178: $hash - the elements should be 'option' => 'shown text'
1179: (shown text should already have been &mt())
1180: $order - (optional) array ref of the order to show the elments in
1181:
1182: =cut
1183:
1184: #-------------------------------------------
1185: sub multiple_select_form {
1186: my ($name,$value,$size,$hash,$order)=@_;
1187: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1188: my $output='';
1189: if (! defined($size)) {
1190: $size = 4;
1191: if (scalar(keys(%$hash))<4) {
1192: $size = scalar(keys(%$hash));
1193: }
1194: }
1195: $output.="\n<select name='$name' size='$size' multiple='1'>";
1196: my @order = ref($order) ? @$order
1197: : sort(keys(%$hash));
1198: foreach my $key (@order) {
1199: $output.='<option value="'.$key.'" ';
1200: $output.='selected="selected" ' if ($selected{$key});
1201: $output.='>'.$hash->{$key}."</option>\n";
1202: }
1203: $output.="</select>\n";
1204: return $output;
1205: }
1206:
1207: #-------------------------------------------
1208:
1209: =pod
1210:
1211: =item * select_form($defdom,$name,%hash)
1212:
1213: Returns a string containing a <select name='$name' size='1'> form to
1214: allow a user to select options from a hash option_name => displayed text.
1215: See lonrights.pm for an example invocation and use.
1216:
1217: =cut
1218:
1219: #-------------------------------------------
1220: sub select_form {
1221: my ($def,$name,%hash) = @_;
1222: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1223: my @keys;
1224: if (exists($hash{'select_form_order'})) {
1225: @keys=@{$hash{'select_form_order'}};
1226: } else {
1227: @keys=sort(keys(%hash));
1228: }
1229: foreach (@keys) {
1230: $selectform.="<option value=\"$_\" ".
1231: ($_ eq $def ? 'selected="selected" ' : '').
1232: ">".&mt($hash{$_})."</option>\n";
1233: }
1234: $selectform.="</select>";
1235: return $selectform;
1236: }
1237:
1238: sub gradeleveldescription {
1239: my $gradelevel=shift;
1240: my %gradelevels=(0 => 'Not specified',
1241: 1 => 'Grade 1',
1242: 2 => 'Grade 2',
1243: 3 => 'Grade 3',
1244: 4 => 'Grade 4',
1245: 5 => 'Grade 5',
1246: 6 => 'Grade 6',
1247: 7 => 'Grade 7',
1248: 8 => 'Grade 8',
1249: 9 => 'Grade 9',
1250: 10 => 'Grade 10',
1251: 11 => 'Grade 11',
1252: 12 => 'Grade 12',
1253: 13 => 'Grade 13',
1254: 14 => '100 Level',
1255: 15 => '200 Level',
1256: 16 => '300 Level',
1257: 17 => '400 Level',
1258: 18 => 'Graduate Level');
1259: return &mt($gradelevels{$gradelevel});
1260: }
1261:
1262: sub select_level_form {
1263: my ($deflevel,$name)=@_;
1264: unless ($deflevel) { $deflevel=0; }
1265: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1266: for (my $i=0; $i<=18; $i++) {
1267: $selectform.="<option value=\"$i\" ".
1268: ($i==$deflevel ? 'selected="selected" ' : '').
1269: ">".&gradeleveldescription($i)."</option>\n";
1270: }
1271: $selectform.="</select>";
1272: return $selectform;
1273: }
1274:
1275: #-------------------------------------------
1276:
1277: =pod
1278:
1279: =item * select_dom_form($defdom,$name,$includeempty)
1280:
1281: Returns a string containing a <select name='$name' size='1'> form to
1282: allow a user to select the domain to preform an operation in.
1283: See loncreateuser.pm for an example invocation and use.
1284:
1285: If the $includeempty flag is set, it also includes an empty choice ("no domain
1286: selected");
1287:
1288: =cut
1289:
1290: #-------------------------------------------
1291: sub select_dom_form {
1292: my ($defdom,$name,$includeempty) = @_;
1293: my @domains = get_domains();
1294: if ($includeempty) { @domains=('',@domains); }
1295: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1296: foreach (@domains) {
1297: $selectdomain.="<option value=\"$_\" ".
1298: ($_ eq $defdom ? 'selected="selected" ' : '').
1299: ">$_</option>\n";
1300: }
1301: $selectdomain.="</select>";
1302: return $selectdomain;
1303: }
1304:
1305: #-------------------------------------------
1306:
1307: =pod
1308:
1309: =item * get_library_servers($domain)
1310:
1311: Returns a hash which contains keys like '103l3' and values like
1312: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1313: given $domain.
1314:
1315: =cut
1316:
1317: #-------------------------------------------
1318: sub get_library_servers {
1319: my $domain = shift;
1320: my %library_servers;
1321: foreach (keys(%Apache::lonnet::libserv)) {
1322: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1323: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1324: }
1325: }
1326: return %library_servers;
1327: }
1328:
1329: #-------------------------------------------
1330:
1331: =pod
1332:
1333: =item * home_server_option_list($domain)
1334:
1335: returns a string which contains an <option> list to be used in a
1336: <select> form input. See loncreateuser.pm for an example.
1337:
1338: =cut
1339:
1340: #-------------------------------------------
1341: sub home_server_option_list {
1342: my $domain = shift;
1343: my %servers = &get_library_servers($domain);
1344: my $result = '';
1345: foreach (sort keys(%servers)) {
1346: $result.=
1347: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1348: }
1349: return $result;
1350: }
1351:
1352: =pod
1353:
1354: =back
1355:
1356: =cut
1357:
1358: ###############################################################
1359: ## Decoding User Agent ##
1360: ###############################################################
1361:
1362: =pod
1363:
1364: =head1 Decoding the User Agent
1365:
1366: =over 4
1367:
1368: =item * &decode_user_agent()
1369:
1370: Inputs: $r
1371:
1372: Outputs:
1373:
1374: =over 4
1375:
1376: =item * $httpbrowser
1377:
1378: =item * $clientbrowser
1379:
1380: =item * $clientversion
1381:
1382: =item * $clientmathml
1383:
1384: =item * $clientunicode
1385:
1386: =item * $clientos
1387:
1388: =back
1389:
1390: =back
1391:
1392: =cut
1393:
1394: ###############################################################
1395: ###############################################################
1396: sub decode_user_agent {
1397: my ($r)=@_;
1398: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1399: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1400: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1401: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1402: my $clientbrowser='unknown';
1403: my $clientversion='0';
1404: my $clientmathml='';
1405: my $clientunicode='0';
1406: for (my $i=0;$i<=$#browsertype;$i++) {
1407: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1408: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1409: $clientbrowser=$bname;
1410: $httpbrowser=~/$vreg/i;
1411: $clientversion=$1;
1412: $clientmathml=($clientversion>=$minv);
1413: $clientunicode=($clientversion>=$univ);
1414: }
1415: }
1416: my $clientos='unknown';
1417: if (($httpbrowser=~/linux/i) ||
1418: ($httpbrowser=~/unix/i) ||
1419: ($httpbrowser=~/ux/i) ||
1420: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1421: if (($httpbrowser=~/vax/i) ||
1422: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1423: if ($httpbrowser=~/next/i) { $clientos='next'; }
1424: if (($httpbrowser=~/mac/i) ||
1425: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1426: if ($httpbrowser=~/win/i) { $clientos='win'; }
1427: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1428: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1429: $clientunicode,$clientos,);
1430: }
1431:
1432: ###############################################################
1433: ## Authentication changing form generation subroutines ##
1434: ###############################################################
1435: ##
1436: ## All of the authform_xxxxxxx subroutines take their inputs in a
1437: ## hash, and have reasonable default values.
1438: ##
1439: ## formname = the name given in the <form> tag.
1440: #-------------------------------------------
1441:
1442: =pod
1443:
1444: =head1 Authentication Routines
1445:
1446: =over 4
1447:
1448: =item * authform_xxxxxx
1449:
1450: The authform_xxxxxx subroutines provide javascript and html forms which
1451: handle some of the conveniences required for authentication forms.
1452: This is not an optimal method, but it works.
1453:
1454: See loncreateuser.pm for invocation and use examples.
1455:
1456: =over 4
1457:
1458: =item * authform_header
1459:
1460: =item * authform_authorwarning
1461:
1462: =item * authform_nochange
1463:
1464: =item * authform_kerberos
1465:
1466: =item * authform_internal
1467:
1468: =item * authform_filesystem
1469:
1470: =back
1471:
1472: =back
1473:
1474: =cut
1475:
1476: #-------------------------------------------
1477: sub authform_header{
1478: my %in = (
1479: formname => 'cu',
1480: kerb_def_dom => '',
1481: @_,
1482: );
1483: $in{'formname'} = 'document.' . $in{'formname'};
1484: my $result='';
1485:
1486: #---------------------------------------------- Code for upper case translation
1487: my $Javascript_toUpperCase;
1488: unless ($in{kerb_def_dom}) {
1489: $Javascript_toUpperCase =<<"END";
1490: switch (choice) {
1491: case 'krb': currentform.elements[choicearg].value =
1492: currentform.elements[choicearg].value.toUpperCase();
1493: break;
1494: default:
1495: }
1496: END
1497: } else {
1498: $Javascript_toUpperCase = "";
1499: }
1500:
1501: my $radioval = "'nochange'";
1502: if (exists($in{'curr_authtype'}) &&
1503: defined($in{'curr_authtype'}) &&
1504: $in{'curr_authtype'} ne '') {
1505: $radioval = "'$in{'curr_authtype'}arg'";
1506: }
1507: my $argfield = 'null';
1508: if ( grep/^mode$/,(keys %in) ) {
1509: if ($in{'mode'} eq 'modifycourse') {
1510: if ( grep/^curr_authtype$/,(keys %in) ) {
1511: $radioval = "'$in{'curr_authtype'}'";
1512: }
1513: if ( grep/^curr_autharg$/,(keys %in) ) {
1514: unless ($in{'curr_autharg'} eq '') {
1515: $argfield = "'$in{'curr_autharg'}'";
1516: }
1517: }
1518: }
1519: }
1520:
1521: $result.=<<"END";
1522: var current = new Object();
1523: current.radiovalue = $radioval;
1524: current.argfield = $argfield;
1525:
1526: function changed_radio(choice,currentform) {
1527: var choicearg = choice + 'arg';
1528: // If a radio button in changed, we need to change the argfield
1529: if (current.radiovalue != choice) {
1530: current.radiovalue = choice;
1531: if (current.argfield != null) {
1532: currentform.elements[current.argfield].value = '';
1533: }
1534: if (choice == 'nochange') {
1535: current.argfield = null;
1536: } else {
1537: current.argfield = choicearg;
1538: switch(choice) {
1539: case 'krb':
1540: currentform.elements[current.argfield].value =
1541: "$in{'kerb_def_dom'}";
1542: break;
1543: default:
1544: break;
1545: }
1546: }
1547: }
1548: return;
1549: }
1550:
1551: function changed_text(choice,currentform) {
1552: var choicearg = choice + 'arg';
1553: if (currentform.elements[choicearg].value !='') {
1554: $Javascript_toUpperCase
1555: // clear old field
1556: if ((current.argfield != choicearg) && (current.argfield != null)) {
1557: currentform.elements[current.argfield].value = '';
1558: }
1559: current.argfield = choicearg;
1560: }
1561: set_auth_radio_buttons(choice,currentform);
1562: return;
1563: }
1564:
1565: function set_auth_radio_buttons(newvalue,currentform) {
1566: var i=0;
1567: while (i < currentform.login.length) {
1568: if (currentform.login[i].value == newvalue) { break; }
1569: i++;
1570: }
1571: if (i == currentform.login.length) {
1572: return;
1573: }
1574: current.radiovalue = newvalue;
1575: currentform.login[i].checked = true;
1576: return;
1577: }
1578: END
1579: return $result;
1580: }
1581:
1582: sub authform_authorwarning{
1583: my $result='';
1584: $result='<i>'.
1585: &mt('As a general rule, only authors or co-authors should be '.
1586: 'filesystem authenticated '.
1587: '(which allows access to the server filesystem).')."</i>\n";
1588: return $result;
1589: }
1590:
1591: sub authform_nochange{
1592: my %in = (
1593: formname => 'document.cu',
1594: kerb_def_dom => 'MSU.EDU',
1595: @_,
1596: );
1597: my $result = '<label>'.&mt('[_1] Do not change login data',
1598: '<input type="radio" name="login" value="nochange" '.
1599: 'checked="checked" onclick="'.
1600: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1601: '</label>';
1602: return $result;
1603: }
1604:
1605: sub authform_kerberos{
1606: my %in = (
1607: formname => 'document.cu',
1608: kerb_def_dom => 'MSU.EDU',
1609: kerb_def_auth => 'krb4',
1610: @_,
1611: );
1612: my ($check4,$check5,$krbarg);
1613: if ($in{'kerb_def_auth'} eq 'krb5') {
1614: $check5 = " checked=\"on\"";
1615: } else {
1616: $check4 = " checked=\"on\"";
1617: }
1618: $krbarg = $in{'kerb_def_dom'};
1619:
1620: my $krbcheck = "";
1621: if ( grep/^curr_authtype$/,(keys %in) ) {
1622: if ($in{'curr_authtype'} =~ m/^krb/) {
1623: $krbcheck = " checked=\"on\"";
1624: if ( grep/^curr_autharg$/,(keys %in) ) {
1625: $krbarg = $in{'curr_autharg'};
1626: }
1627: }
1628: }
1629:
1630: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1631: my $result .= &mt
1632: ('[_1] Kerberos authenticated with domain [_2] '.
1633: '[_3] Version 4 [_4] Version 5 [_5]',
1634: '<label><input type="radio" name="login" value="krb" '.
1635: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1636: '</label><input type="text" size="10" name="krbarg" '.
1637: 'value="'.$krbarg.'" '.
1638: 'onchange="'.$jscall.'" />',
1639: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1640: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1641: '</label>');
1642: return $result;
1643: }
1644:
1645: sub authform_internal{
1646: my %args = (
1647: formname => 'document.cu',
1648: kerb_def_dom => 'MSU.EDU',
1649: @_,
1650: );
1651:
1652: my $intcheck = "";
1653: my $intarg = 'value=""';
1654: if ( grep/^curr_authtype$/,(keys %args) ) {
1655: if ($args{'curr_authtype'} eq 'int') {
1656: $intcheck = " checked=\"on\"";
1657: if ( grep/^curr_autharg$/,(keys %args) ) {
1658: $intarg = "value=\"$args{'curr_autharg'}\"";
1659: }
1660: }
1661: }
1662:
1663: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1664: my $result.=&mt
1665: ('[_1] Internally authenticated (with initial password [_2])',
1666: '<label><input type="radio" name="login" value="int" '.$intcheck.
1667: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1668: '</label><input type="text" size="10" name="intarg" '.$intarg.
1669: ' onchange="'.$jscall.'" />');
1670: return $result;
1671: }
1672:
1673: sub authform_local{
1674: my %in = (
1675: formname => 'document.cu',
1676: kerb_def_dom => 'MSU.EDU',
1677: @_,
1678: );
1679:
1680: my $loccheck = "";
1681: my $locarg = 'value=""';
1682: if ( grep/^curr_authtype$/,(keys %in) ) {
1683: if ($in{'curr_authtype'} eq 'loc') {
1684: $loccheck = " checked=\"on\"";
1685: if ( grep/^curr_autharg$/,(keys %in) ) {
1686: $locarg = "value=\"$in{'curr_autharg'}\"";
1687: }
1688: }
1689: }
1690:
1691: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1692: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1693: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1694: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1695: '</label><input type="text" size="10" name="locarg" '.$locarg.
1696: ' onchange="'.$jscall.'" />');
1697: return $result;
1698: }
1699:
1700: sub authform_filesystem{
1701: my %in = (
1702: formname => 'document.cu',
1703: kerb_def_dom => 'MSU.EDU',
1704: @_,
1705: );
1706: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1707: my $result.= &mt
1708: ('[_1] Filesystem Authenticated (with initial password [_2])',
1709: '<label><input type="radio" name="login" value="fsys" '.
1710: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1711: '</label><input type="text" size="10" name="fsysarg" value="" '.
1712: 'onchange="'.$jscall.'" />');
1713: return $result;
1714: }
1715:
1716: ###############################################################
1717: ## Get Authentication Defaults for Domain ##
1718: ###############################################################
1719:
1720: =pod
1721:
1722: =head1 Domains and Authentication
1723:
1724: Returns default authentication type and an associated argument as
1725: listed in file 'domain.tab'.
1726:
1727: =over 4
1728:
1729: =item * get_auth_defaults
1730:
1731: get_auth_defaults($target_domain) returns the default authentication
1732: type and an associated argument (initial password or a kerberos domain).
1733: These values are stored in lonTabs/domain.tab
1734:
1735: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1736:
1737: If target_domain is not found in domain.tab, returns nothing ('').
1738:
1739: =cut
1740:
1741: #-------------------------------------------
1742: sub get_auth_defaults {
1743: my $domain=shift;
1744: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1745: }
1746: ###############################################################
1747: ## End Get Authentication Defaults for Domain ##
1748: ###############################################################
1749:
1750: ###############################################################
1751: ## Get Kerberos Defaults for Domain ##
1752: ###############################################################
1753: ##
1754: ## Returns default kerberos version and an associated argument
1755: ## as listed in file domain.tab. If not listed, provides
1756: ## appropriate default domain and kerberos version.
1757: ##
1758: #-------------------------------------------
1759:
1760: =pod
1761:
1762: =item * get_kerberos_defaults
1763:
1764: get_kerberos_defaults($target_domain) returns the default kerberos
1765: version and domain. If not found in domain.tabs, it defaults to
1766: version 4 and the domain of the server.
1767:
1768: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1769:
1770: =cut
1771:
1772: #-------------------------------------------
1773: sub get_kerberos_defaults {
1774: my $domain=shift;
1775: my ($krbdef,$krbdefdom) =
1776: &Apache::loncommon::get_auth_defaults($domain);
1777: unless ($krbdef =~/^krb/ && $krbdefdom) {
1778: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1779: my $krbdefdom=$1;
1780: $krbdefdom=~tr/a-z/A-Z/;
1781: $krbdef = "krb4";
1782: }
1783: return ($krbdef,$krbdefdom);
1784: }
1785:
1786: =pod
1787:
1788: =back
1789:
1790: =cut
1791:
1792: ###############################################################
1793: ## Thesaurus Functions ##
1794: ###############################################################
1795:
1796: =pod
1797:
1798: =head1 Thesaurus Functions
1799:
1800: =over 4
1801:
1802: =item * initialize_keywords
1803:
1804: Initializes the package variable %Keywords if it is empty. Uses the
1805: package variable $thesaurus_db_file.
1806:
1807: =cut
1808:
1809: ###################################################
1810:
1811: sub initialize_keywords {
1812: return 1 if (scalar keys(%Keywords));
1813: # If we are here, %Keywords is empty, so fill it up
1814: # Make sure the file we need exists...
1815: if (! -e $thesaurus_db_file) {
1816: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1817: " failed because it does not exist");
1818: return 0;
1819: }
1820: # Set up the hash as a database
1821: my %thesaurus_db;
1822: if (! tie(%thesaurus_db,'GDBM_File',
1823: $thesaurus_db_file,&GDBM_READER(),0640)){
1824: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1825: $thesaurus_db_file);
1826: return 0;
1827: }
1828: # Get the average number of appearances of a word.
1829: my $avecount = $thesaurus_db{'average.count'};
1830: # Put keywords (those that appear > average) into %Keywords
1831: while (my ($word,$data)=each (%thesaurus_db)) {
1832: my ($count,undef) = split /:/,$data;
1833: $Keywords{$word}++ if ($count > $avecount);
1834: }
1835: untie %thesaurus_db;
1836: # Remove special values from %Keywords.
1837: foreach ('total.count','average.count') {
1838: delete($Keywords{$_}) if (exists($Keywords{$_}));
1839: }
1840: return 1;
1841: }
1842:
1843: ###################################################
1844:
1845: =pod
1846:
1847: =item * keyword($word)
1848:
1849: Returns true if $word is a keyword. A keyword is a word that appears more
1850: than the average number of times in the thesaurus database. Calls
1851: &initialize_keywords
1852:
1853: =cut
1854:
1855: ###################################################
1856:
1857: sub keyword {
1858: return if (!&initialize_keywords());
1859: my $word=lc(shift());
1860: $word=~s/\W//g;
1861: return exists($Keywords{$word});
1862: }
1863:
1864: ###############################################################
1865:
1866: =pod
1867:
1868: =item * get_related_words
1869:
1870: Look up a word in the thesaurus. Takes a scalar argument and returns
1871: an array of words. If the keyword is not in the thesaurus, an empty array
1872: will be returned. The order of the words returned is determined by the
1873: database which holds them.
1874:
1875: Uses global $thesaurus_db_file.
1876:
1877: =cut
1878:
1879: ###############################################################
1880: sub get_related_words {
1881: my $keyword = shift;
1882: my %thesaurus_db;
1883: if (! -e $thesaurus_db_file) {
1884: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1885: "failed because the file does not exist");
1886: return ();
1887: }
1888: if (! tie(%thesaurus_db,'GDBM_File',
1889: $thesaurus_db_file,&GDBM_READER(),0640)){
1890: return ();
1891: }
1892: my @Words=();
1893: if (exists($thesaurus_db{$keyword})) {
1894: $_ = $thesaurus_db{$keyword};
1895: (undef,@Words) = split/:/; # The first element is the number of times
1896: # the word appears. We do not need it now.
1897: for (my $i=0;$i<=$#Words;$i++) {
1898: ($Words[$i],undef)= split/\,/,$Words[$i];
1899: }
1900: }
1901: untie %thesaurus_db;
1902: return @Words;
1903: }
1904:
1905: =pod
1906:
1907: =back
1908:
1909: =cut
1910:
1911: # -------------------------------------------------------------- Plaintext name
1912: =pod
1913:
1914: =head1 User Name Functions
1915:
1916: =over 4
1917:
1918: =item * plainname($uname,$udom,$first)
1919:
1920: Takes a users logon name and returns it as a string in
1921: "first middle last generation" form
1922: if $first is set to 'lastname' then it returns it as
1923: 'lastname generation, firstname middlename' if their is a lastname
1924:
1925: =cut
1926:
1927:
1928: ###############################################################
1929: sub plainname {
1930: my ($uname,$udom,$first)=@_;
1931: my %names=&getnames($uname,$udom);
1932: my $name=&Apache::lonnet::format_name($names{'firstname'},
1933: $names{'middlename'},
1934: $names{'lastname'},
1935: $names{'generation'},$first);
1936: $name=~s/^\s+//;
1937: $name=~s/\s+$//;
1938: $name=~s/\s+/ /g;
1939: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1940: return $name;
1941: }
1942:
1943: # -------------------------------------------------------------------- Nickname
1944: =pod
1945:
1946: =item * nickname($uname,$udom)
1947:
1948: Gets a users name and returns it as a string as
1949:
1950: ""nickname""
1951:
1952: if the user has a nickname or
1953:
1954: "first middle last generation"
1955:
1956: if the user does not
1957:
1958: =cut
1959:
1960: sub nickname {
1961: my ($uname,$udom)=@_;
1962: my %names=&getnames($uname,$udom);
1963: my $name=$names{'nickname'};
1964: if ($name) {
1965: $name='"'.$name.'"';
1966: } else {
1967: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1968: $names{'lastname'}.' '.$names{'generation'};
1969: $name=~s/\s+$//;
1970: $name=~s/\s+/ /g;
1971: }
1972: return $name;
1973: }
1974:
1975: sub getnames {
1976: my ($uname,$udom)=@_;
1977: my $id=$uname.':'.$udom;
1978: my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
1979: if ($cached) {
1980: return %{$names};
1981: } else {
1982: my %loadnames=&Apache::lonnet::get('environment',
1983: ['firstname','middlename','lastname','generation','nickname'],
1984: $udom,$uname);
1985: &Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
1986: return %loadnames;
1987: }
1988: }
1989:
1990: # ------------------------------------------------------------------ Screenname
1991:
1992: =pod
1993:
1994: =item * screenname($uname,$udom)
1995:
1996: Gets a users screenname and returns it as a string
1997:
1998: =cut
1999:
2000: sub screenname {
2001: my ($uname,$udom)=@_;
2002: if ($uname eq $env{'user.name'} &&
2003: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
2004: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
2005: return $names{'screenname'};
2006: }
2007:
2008:
2009: # ------------------------------------------------------------- Message Wrapper
2010:
2011: sub messagewrapper {
2012: my ($link,$username,$domain)=@_;
2013: return
2014: '<a href="/adm/email?compose=individual&'.
2015: 'recname='.$username.'&recdom='.$domain.'" '.
2016: 'title="'.&mt('Send message').'">'.$link.'</a>';
2017: }
2018: # --------------------------------------------------------------- Notes Wrapper
2019:
2020: sub noteswrapper {
2021: my ($link,$un,$do)=@_;
2022: return
2023: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
2024: }
2025: # ------------------------------------------------------------- Aboutme Wrapper
2026:
2027: sub aboutmewrapper {
2028: my ($link,$username,$domain,$target)=@_;
2029: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
2030: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
2031: }
2032:
2033: # ------------------------------------------------------------ Syllabus Wrapper
2034:
2035:
2036: sub syllabuswrapper {
2037: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2038: if ($fontcolor) {
2039: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2040: }
2041: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
2042: }
2043:
2044: sub track_student_link {
2045: my ($linktext,$sname,$sdom,$target,$start) = @_;
2046: my $link ="/adm/trackstudent?";
2047: my $title = 'View recent activity';
2048: if (defined($sname) && $sname !~ /^\s*$/ &&
2049: defined($sdom) && $sdom !~ /^\s*$/) {
2050: $link .= "selected_student=$sname:$sdom";
2051: $title .= ' of this student';
2052: }
2053: if (defined($target) && $target !~ /^\s*$/) {
2054: $target = qq{target="$target"};
2055: } else {
2056: $target = '';
2057: }
2058: if ($start) { $link.='&start='.$start; }
2059: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2060: }
2061:
2062: =pod
2063:
2064: =back
2065:
2066: =head1 Access .tab File Data
2067:
2068: =over 4
2069:
2070: =item * languageids()
2071:
2072: returns list of all language ids
2073:
2074: =cut
2075:
2076: sub languageids {
2077: return sort(keys(%language));
2078: }
2079:
2080: =pod
2081:
2082: =item * languagedescription()
2083:
2084: returns description of a specified language id
2085:
2086: =cut
2087:
2088: sub languagedescription {
2089: my $code=shift;
2090: return ($supported_language{$code}?'* ':'').
2091: $language{$code}.
2092: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2093: }
2094:
2095: sub plainlanguagedescription {
2096: my $code=shift;
2097: return $language{$code};
2098: }
2099:
2100: sub supportedlanguagecode {
2101: my $code=shift;
2102: return $supported_language{$code};
2103: }
2104:
2105: =pod
2106:
2107: =item * copyrightids()
2108:
2109: returns list of all copyrights
2110:
2111: =cut
2112:
2113: sub copyrightids {
2114: return sort(keys(%cprtag));
2115: }
2116:
2117: =pod
2118:
2119: =item * copyrightdescription()
2120:
2121: returns description of a specified copyright id
2122:
2123: =cut
2124:
2125: sub copyrightdescription {
2126: return &mt($cprtag{shift(@_)});
2127: }
2128:
2129: =pod
2130:
2131: =item * source_copyrightids()
2132:
2133: returns list of all source copyrights
2134:
2135: =cut
2136:
2137: sub source_copyrightids {
2138: return sort(keys(%scprtag));
2139: }
2140:
2141: =pod
2142:
2143: =item * source_copyrightdescription()
2144:
2145: returns description of a specified source copyright id
2146:
2147: =cut
2148:
2149: sub source_copyrightdescription {
2150: return &mt($scprtag{shift(@_)});
2151: }
2152:
2153: =pod
2154:
2155: =item * filecategories()
2156:
2157: returns list of all file categories
2158:
2159: =cut
2160:
2161: sub filecategories {
2162: return sort(keys(%category_extensions));
2163: }
2164:
2165: =pod
2166:
2167: =item * filecategorytypes()
2168:
2169: returns list of file types belonging to a given file
2170: category
2171:
2172: =cut
2173:
2174: sub filecategorytypes {
2175: return @{$category_extensions{lc($_[0])}};
2176: }
2177:
2178: =pod
2179:
2180: =item * fileembstyle()
2181:
2182: returns embedding style for a specified file type
2183:
2184: =cut
2185:
2186: sub fileembstyle {
2187: return $fe{lc(shift(@_))};
2188: }
2189:
2190:
2191: sub filecategoryselect {
2192: my ($name,$value)=@_;
2193: return &select_form($value,$name,
2194: '' => &mt('Any category'),
2195: map { $_,$_ } sort(keys(%category_extensions)));
2196: }
2197:
2198: =pod
2199:
2200: =item * filedescription()
2201:
2202: returns description for a specified file type
2203:
2204: =cut
2205:
2206: sub filedescription {
2207: my $file_description = $fd{lc(shift())};
2208: $file_description =~ s:([\[\]]):~$1:g;
2209: return &mt($file_description);
2210: }
2211:
2212: =pod
2213:
2214: =item * filedescriptionex()
2215:
2216: returns description for a specified file type with
2217: extra formatting
2218:
2219: =cut
2220:
2221: sub filedescriptionex {
2222: my $ex=shift;
2223: my $file_description = $fd{lc($ex)};
2224: $file_description =~ s:([\[\]]):~$1:g;
2225: return '.'.$ex.' '.&mt($file_description);
2226: }
2227:
2228: # End of .tab access
2229: =pod
2230:
2231: =back
2232:
2233: =cut
2234:
2235: # ------------------------------------------------------------------ File Types
2236: sub fileextensions {
2237: return sort(keys(%fe));
2238: }
2239:
2240: # ----------------------------------------------------------- Display Languages
2241: # returns a hash with all desired display languages
2242: #
2243:
2244: sub display_languages {
2245: my %languages=();
2246: foreach (&preferred_languages()) {
2247: $languages{$_}=1;
2248: }
2249: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2250: if ($env{'form.displaylanguage'}) {
2251: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2252: $languages{$_}=1;
2253: }
2254: }
2255: return %languages;
2256: }
2257:
2258: sub preferred_languages {
2259: my @languages=();
2260: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2261: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2262: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2263: }
2264: if ($env{'environment.languages'}) {
2265: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
2266: }
2267: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2268: if ($browser) {
2269: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2270: }
2271: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2272: @languages=(@languages,
2273: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2274: }
2275: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2276: @languages=(@languages,
2277: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2278: }
2279: if ($Apache::lonnet::domain_lang_def{
2280: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2281: @languages=(@languages,
2282: $Apache::lonnet::domain_lang_def{
2283: $Apache::lonnet::perlvar{'lonDefDomain'}});
2284: }
2285: # turn "en-ca" into "en-ca,en"
2286: my @genlanguages;
2287: foreach (@languages) {
2288: unless ($_=~/\w/) { next; }
2289: push (@genlanguages,$_);
2290: if ($_=~/(\-|\_)/) {
2291: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2292: }
2293: }
2294: return @genlanguages;
2295: }
2296:
2297: ###############################################################
2298: ## Student Answer Attempts ##
2299: ###############################################################
2300:
2301: =pod
2302:
2303: =head1 Alternate Problem Views
2304:
2305: =over 4
2306:
2307: =item * get_previous_attempt($symb, $username, $domain, $course,
2308: $getattempt, $regexp, $gradesub)
2309:
2310: Return string with previous attempt on problem. Arguments:
2311:
2312: =over 4
2313:
2314: =item * $symb: Problem, including path
2315:
2316: =item * $username: username of the desired student
2317:
2318: =item * $domain: domain of the desired student
2319:
2320: =item * $course: Course ID
2321:
2322: =item * $getattempt: Leave blank for all attempts, otherwise put
2323: something
2324:
2325: =item * $regexp: if string matches this regexp, the string will be
2326: sent to $gradesub
2327:
2328: =item * $gradesub: routine that processes the string if it matches $regexp
2329:
2330: =back
2331:
2332: The output string is a table containing all desired attempts, if any.
2333:
2334: =cut
2335:
2336: sub get_previous_attempt {
2337: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2338: my $prevattempts='';
2339: no strict 'refs';
2340: if ($symb) {
2341: my (%returnhash)=
2342: &Apache::lonnet::restore($symb,$course,$domain,$username);
2343: if ($returnhash{'version'}) {
2344: my %lasthash=();
2345: my $version;
2346: for ($version=1;$version<=$returnhash{'version'};$version++) {
2347: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2348: $lasthash{$_}=$returnhash{$version.':'.$_};
2349: }
2350: }
2351: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2352: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2353: foreach (sort(keys %lasthash)) {
2354: my ($ign,@parts) = split(/\./,$_);
2355: if ($#parts > 0) {
2356: my $data=$parts[-1];
2357: pop(@parts);
2358: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2359: } else {
2360: if ($#parts == 0) {
2361: $prevattempts.='<th>'.$parts[0].'</th>';
2362: } else {
2363: $prevattempts.='<th>'.$ign.'</th>';
2364: }
2365: }
2366: }
2367: if ($getattempt eq '') {
2368: for ($version=1;$version<=$returnhash{'version'};$version++) {
2369: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2370: foreach (sort(keys %lasthash)) {
2371: my $value;
2372: if ($_ =~ /timestamp/) {
2373: $value=scalar(localtime($returnhash{$version.':'.$_}));
2374: } else {
2375: $value=$returnhash{$version.':'.$_};
2376: }
2377: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2378: }
2379: }
2380: }
2381: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2382: foreach (sort(keys %lasthash)) {
2383: my $value;
2384: if ($_ =~ /timestamp/) {
2385: $value=scalar(localtime($lasthash{$_}));
2386: } else {
2387: $value=$lasthash{$_};
2388: }
2389: $value=&Apache::lonnet::unescape($value);
2390: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2391: $prevattempts.='<td>'.$value.' </td>';
2392: }
2393: $prevattempts.='</tr></table></td></tr></table>';
2394: } else {
2395: $prevattempts='Nothing submitted - no attempts.';
2396: }
2397: } else {
2398: $prevattempts='No data.';
2399: }
2400: }
2401:
2402: sub relative_to_absolute {
2403: my ($url,$output)=@_;
2404: my $parser=HTML::TokeParser->new(\$output);
2405: my $token;
2406: my $thisdir=$url;
2407: my @rlinks=();
2408: while ($token=$parser->get_token) {
2409: if ($token->[0] eq 'S') {
2410: if ($token->[1] eq 'a') {
2411: if ($token->[2]->{'href'}) {
2412: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2413: }
2414: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2415: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2416: } elsif ($token->[1] eq 'base') {
2417: $thisdir=$token->[2]->{'href'};
2418: }
2419: }
2420: }
2421: $thisdir=~s-/[^/]*$--;
2422: foreach (@rlinks) {
2423: unless (($_=~/^http:\/\//i) ||
2424: ($_=~/^\//) ||
2425: ($_=~/^javascript:/i) ||
2426: ($_=~/^mailto:/i) ||
2427: ($_=~/^\#/)) {
2428: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2429: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2430: }
2431: }
2432: # -------------------------------------------------- Deal with Applet codebases
2433: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2434: return $output;
2435: }
2436:
2437: =pod
2438:
2439: =item * get_student_view
2440:
2441: show a snapshot of what student was looking at
2442:
2443: =cut
2444:
2445: sub get_student_view {
2446: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2447: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2448: my (%form);
2449: my @elements=('symb','courseid','domain','username');
2450: foreach my $element (@elements) {
2451: $form{'grade_'.$element}=eval '$'.$element #'
2452: }
2453: if (defined($moreenv)) {
2454: %form=(%form,%{$moreenv});
2455: }
2456: if (defined($target)) { $form{'grade_target'} = $target; }
2457: $feedurl=&Apache::lonnet::clutter($feedurl);
2458: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2459: $userview=~s/\<body[^\>]*\>//gi;
2460: $userview=~s/\<\/body\>//gi;
2461: $userview=~s/\<html\>//gi;
2462: $userview=~s/\<\/html\>//gi;
2463: $userview=~s/\<head\>//gi;
2464: $userview=~s/\<\/head\>//gi;
2465: $userview=~s/action\s*\=/would_be_action\=/gi;
2466: $userview=&relative_to_absolute($feedurl,$userview);
2467: return $userview;
2468: }
2469:
2470: =pod
2471:
2472: =item * get_student_answers()
2473:
2474: show a snapshot of how student was answering problem
2475:
2476: =cut
2477:
2478: sub get_student_answers {
2479: my ($symb,$username,$domain,$courseid,%form) = @_;
2480: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2481: my (%moreenv);
2482: my @elements=('symb','courseid','domain','username');
2483: foreach my $element (@elements) {
2484: $moreenv{'grade_'.$element}=eval '$'.$element #'
2485: }
2486: $moreenv{'grade_target'}='answer';
2487: %moreenv=(%form,%moreenv);
2488: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2489: return $userview;
2490: }
2491:
2492: =pod
2493:
2494: =item * &submlink()
2495:
2496: Inputs: $text $uname $udom $symb $target
2497:
2498: Returns: A link to grades.pm such as to see the SUBM view of a student
2499:
2500: =cut
2501:
2502: ###############################################
2503: sub submlink {
2504: my ($text,$uname,$udom,$symb,$target)=@_;
2505: if (!($uname && $udom)) {
2506: (my $cursymb, my $courseid,$udom,$uname)=
2507: &Apache::lonxml::whichuser($symb);
2508: if (!$symb) { $symb=$cursymb; }
2509: }
2510: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2511: $symb=&Apache::lonnet::escape($symb);
2512: if ($target) { $target="target=\"$target\""; }
2513: return '<a href="/adm/grades?&command=submission&'.
2514: 'symb='.$symb.'&student='.$uname.
2515: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2516: }
2517: ##############################################
2518:
2519: =pod
2520:
2521: =item * &pgrdlink()
2522:
2523: Inputs: $text $uname $udom $symb $target
2524:
2525: Returns: A link to grades.pm such as to see the PGRD view of a student
2526:
2527: =cut
2528:
2529: ###############################################
2530: sub pgrdlink {
2531: my $link=&submlink(@_);
2532: $link=~s/(&command=submission)/$1&showgrading=yes/;
2533: return $link;
2534: }
2535: ##############################################
2536:
2537: =pod
2538:
2539: =item * &pprmlink()
2540:
2541: Inputs: $text $uname $udom $symb $target
2542:
2543: Returns: A link to parmset.pm such as to see the PPRM view of a
2544: student and a specific resource
2545:
2546: =cut
2547:
2548: ###############################################
2549: sub pprmlink {
2550: my ($text,$uname,$udom,$symb,$target)=@_;
2551: if (!($uname && $udom)) {
2552: (my $cursymb, my $courseid,$udom,$uname)=
2553: &Apache::lonxml::whichuser($symb);
2554: if (!$symb) { $symb=$cursymb; }
2555: }
2556: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2557: $symb=&Apache::lonnet::escape($symb);
2558: if ($target) { $target="target=\"$target\""; }
2559: return '<a href="/adm/parmset?&command=set&'.
2560: 'symb='.$symb.'&uname='.$uname.
2561: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2562: }
2563: ##############################################
2564:
2565: =pod
2566:
2567: =back
2568:
2569: =cut
2570:
2571: ###############################################
2572:
2573:
2574: sub timehash {
2575: my @ltime=localtime(shift);
2576: return ( 'seconds' => $ltime[0],
2577: 'minutes' => $ltime[1],
2578: 'hours' => $ltime[2],
2579: 'day' => $ltime[3],
2580: 'month' => $ltime[4]+1,
2581: 'year' => $ltime[5]+1900,
2582: 'weekday' => $ltime[6],
2583: 'dayyear' => $ltime[7]+1,
2584: 'dlsav' => $ltime[8] );
2585: }
2586:
2587: sub maketime {
2588: my %th=@_;
2589: return POSIX::mktime(
2590: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2591: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2592: }
2593:
2594: #########################################
2595:
2596: sub findallcourses {
2597: my %courses=();
2598: my $now=time;
2599: foreach (keys %env) {
2600: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2601: my ($starttime,$endtime)=$env{$_};
2602: my $active=1;
2603: if ($starttime) {
2604: if ($now<$starttime) { $active=0; }
2605: }
2606: if ($endtime) {
2607: if ($now>$endtime) { $active=0; }
2608: }
2609: if ($active) { $courses{$1.'_'.$2}=1; }
2610: }
2611: }
2612: return keys %courses;
2613: }
2614:
2615: ###############################################
2616: ###############################################
2617:
2618: =pod
2619:
2620: =head1 Domain Template Functions
2621:
2622: =over 4
2623:
2624: =item * &determinedomain()
2625:
2626: Inputs: $domain (usually will be undef)
2627:
2628: Returns: Determines which domain should be used for designs
2629:
2630: =cut
2631:
2632: ###############################################
2633: sub determinedomain {
2634: my $domain=shift;
2635: if (! $domain) {
2636: # Determine domain if we have not been given one
2637: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2638: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2639: if ($env{'request.role.domain'}) {
2640: $domain=$env{'request.role.domain'};
2641: }
2642: }
2643: return $domain;
2644: }
2645: ###############################################
2646: =pod
2647:
2648: =item * &domainlogo()
2649:
2650: Inputs: $domain (usually will be undef)
2651:
2652: Returns: A link to a domain logo, if the domain logo exists.
2653: If the domain logo does not exist, a description of the domain.
2654:
2655: =cut
2656:
2657: ###############################################
2658: sub domainlogo {
2659: my $domain = &determinedomain(shift);
2660: # See if there is a logo
2661: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2662: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2663: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2664: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2665: return $Apache::lonnet::domaindescription{$domain};
2666: } else {
2667: return '';
2668: }
2669: }
2670: ##############################################
2671:
2672: =pod
2673:
2674: =item * &designparm()
2675:
2676: Inputs: $which parameter; $domain (usually will be undef)
2677:
2678: Returns: value of designparamter $which
2679:
2680: =cut
2681:
2682: ##############################################
2683: sub designparm {
2684: my ($which,$domain)=@_;
2685: if ($env{'browser.blackwhite'} eq 'on') {
2686: if ($which=~/\.(font|alink|vlink|link)$/) {
2687: return '#000000';
2688: }
2689: if ($which=~/\.(pgbg|sidebg)$/) {
2690: return '#FFFFFF';
2691: }
2692: if ($which=~/\.tabbg$/) {
2693: return '#CCCCCC';
2694: }
2695: }
2696: if ($env{'environment.color.'.$which}) {
2697: return $env{'environment.color.'.$which};
2698: }
2699: $domain=&determinedomain($domain);
2700: if ($designhash{$domain.'.'.$which}) {
2701: return $designhash{$domain.'.'.$which};
2702: } else {
2703: return $designhash{'default.'.$which};
2704: }
2705: }
2706:
2707: ###############################################
2708: ###############################################
2709:
2710: =pod
2711:
2712: =back
2713:
2714: =head1 HTTP Helpers
2715:
2716: =over 4
2717:
2718: =item * &bodytag()
2719:
2720: Returns a uniform header for LON-CAPA web pages.
2721:
2722: Inputs:
2723:
2724: =over 4
2725:
2726: =item * $title, A title to be displayed on the page.
2727:
2728: =item * $function, the current role (can be undef).
2729:
2730: =item * $addentries, extra parameters for the <body> tag.
2731:
2732: =item * $bodyonly, if defined, only return the <body> tag.
2733:
2734: =item * $domain, if defined, force a given domain.
2735:
2736: =item * $forcereg, if page should register as content page (relevant for
2737: text interface only)
2738:
2739: =item * $customtitle, alternate text to use instead of $title
2740: in the title box that appears, this text
2741: is not auto translated like the $title is
2742:
2743: =item * $notopbar, if true, keep the 'what is this' info but remove the
2744: navigational links
2745:
2746: =item * $bgcolor, used to override the bg coor on a webpage to a specific value
2747:
2748: =back
2749:
2750: Returns: A uniform header for LON-CAPA web pages.
2751: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2752: If $bodyonly is undef or zero, an html string containing a <body> tag and
2753: other decorations will be returned.
2754:
2755: =cut
2756:
2757: sub bodytag {
2758: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
2759: $notopbar,$bgcolor)=@_;
2760: $title=&mt($title);
2761: $function = &get_users_function() if (!$function);
2762: my $img=&designparm($function.'.img',$domain);
2763: my $pgbg= $bgcolor || &designparm($function.'.pgbg',$domain);
2764: my $tabbg=&designparm($function.'.tabbg',$domain);
2765: my $font=&designparm($function.'.font',$domain);
2766: my $link=&designparm($function.'.link',$domain);
2767: my $alink=&designparm($function.'.alink',$domain);
2768: my $vlink=&designparm($function.'.vlink',$domain);
2769: my $sidebg=&designparm($function.'.sidebg',$domain);
2770: # Accessibility font enhance
2771: my $addstyle='';
2772: if ($env{'browser.fontenhance'} eq 'on') {
2773: $addstyle=' font-size: x-large;';
2774: }
2775: # role and realm
2776: my ($role,$realm)
2777: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
2778: # realm
2779: if ($env{'request.course.id'}) {
2780: $realm=
2781: $env{'course.'.$env{'request.course.id'}.'.description'};
2782: }
2783: unless ($realm) { $realm=' '; }
2784: # Set messages
2785: my $messages=&domainlogo($domain);
2786: # Port for miniserver
2787: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2788: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2789:
2790: my $extra_body_attr = &make_attr_string($forcereg,$addentries);
2791:
2792: # construct main body tag
2793: my $bodytag = <<END;
2794: <style type="text/css">
2795: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2796: a:focus { color: red; background: yellow }
2797: table.thinborder { border-collapse: collapse; }
2798: table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
2799: form, .inline { display: inline; }
2800: .center { text-align: center; }
2801: .filename {font-family: monospace;}
2802: </style>
2803: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2804: style="margin-top: 0px;$addstyle" $extra_body_attr>
2805: END
2806:
2807: $bodytag .= &Apache::lontexconvert::init_math_support();
2808:
2809: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2810: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2811: if ($bodyonly) {
2812: return $bodytag;
2813: } elsif ($env{'browser.interface'} eq 'textual') {
2814: # Accessibility
2815:
2816: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2817: $forcereg).
2818: '<h1>LON-CAPA: '.$title.'</h1>';
2819: } elsif ($env{'environment.remote'} eq 'off') {
2820: # No Remote
2821: my $roleinfo=(<<ENDROLE);
2822: <td bgcolor="$tabbg" align="right">
2823: <font size="2" face="Arial, Helvetica, sans-serif">
2824: $env{'environment.firstname'}
2825: $env{'environment.middlename'}
2826: $env{'environment.lastname'}
2827: $env{'environment.generation'}
2828: </font>
2829: <br />
2830: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2831: <br />
2832: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2833: </td>
2834: ENDROLE
2835: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2836: $font.'"><b>'.$title.'</b></font>';
2837: if ($customtitle) {
2838: $titleinfo = $customtitle;
2839: }
2840:
2841: if ($env{'request.state'} eq 'construct') {
2842: my ($uname,$thisdisfn)=
2843: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2844: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2845: $formaction=~s/\/+/\//g;
2846: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2847: my $parentpath = '';
2848: my $lastitem = '';
2849: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2850: $parentpath = $1;
2851: $lastitem = $2;
2852: } else {
2853: $lastitem = $thisdisfn;
2854: }
2855: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2856: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2857: '<form name="dirs" method="post" action="'.$formaction
2858: .'" target="_top"><tt><b>'
2859: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2860: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2861: .'</form>'
2862: .&Apache::lonmenu::constspaceform();
2863:
2864: }
2865: $forcereg=1;
2866: }
2867: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2868: 'cellspacing="3" cellpadding="3">'.
2869: '<tr><td bgcolor="'.$tabbg.'">'.
2870: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2871: if ($env{'request.state'} eq 'construct') {
2872: if ($notopbar) {
2873: $bodytag .= $titletable;
2874: } else {
2875: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2876: }
2877: } else {
2878: if ($notopbar) {
2879: $bodytag .= $titletable;
2880: } else {
2881: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
2882: $titletable;
2883: }
2884: }
2885: return $bodytag;
2886: }
2887:
2888: #
2889: # Top frame rendering, Remote is up
2890: #
2891: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2892: if ($customtitle) {
2893: $titleinfo = $customtitle;
2894: }
2895: #
2896: # Extra info if you are the DC
2897: my $dc_info = '';
2898: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2899: $env{'course.'.$env{'request.course.id'}.
2900: '.domain'}.'/'})) {
2901: my $cid = $env{'request.course.id'};
2902: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
2903: $dc_info = '('.$dc_info.')';
2904: }
2905: # Explicit link to get inline menu
2906: my $menu='<br /><font size="2" face="Arial, Helvetica, sans-serif"> <a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a></font>';
2907: #
2908: return(<<ENDBODY);
2909: $bodytag
2910: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2911: <tr><td bgcolor="$sidebg">
2912: $upperleft</td>
2913: <td bgcolor="$sidebg" align="right">$messages </td>
2914: </tr>
2915: <tr>
2916: <td rowspan="3" bgcolor="$tabbg">
2917: $titleinfo $dc_info $menu
2918: </td><td bgcolor="$tabbg" align="right">
2919: <font size="2" face="Arial, Helvetica, sans-serif">
2920: $env{'environment.firstname'}
2921: $env{'environment.middlename'}
2922: $env{'environment.lastname'}
2923: $env{'environment.generation'}
2924: </font>
2925: </td>
2926: </tr>
2927: <tr><td bgcolor="$tabbg" align="right">
2928: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2929: </td></tr>
2930: <tr>
2931: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2932: </table><br />
2933: ENDBODY
2934: }
2935:
2936: sub make_attr_string {
2937: my ($register,$attr_ref) = @_;
2938:
2939: if ($attr_ref && !ref($attr_ref)) {
2940: die("addentries Must be a hash ref ".
2941: join(':',caller(1))." ".
2942: join(':',caller(0))." ");
2943: }
2944:
2945: if ($register) {
2946: $attr_ref->{'onload'} = &Apache::lonmenu::loadevents().
2947: $attr_ref->{'onload'};
2948: $attr_ref->{'onunload'} = &Apache::lonmenu::unloadevents().
2949: $attr_ref->{'onunload'};
2950: }
2951: my $attr_string;
2952: foreach my $attr (keys(%$attr_ref)) {
2953: $attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
2954: }
2955: return $attr_string;
2956: }
2957:
2958:
2959: ###############################################
2960: ###############################################
2961:
2962: =pod
2963:
2964: =back
2965:
2966: =head1 HTML Helpers
2967:
2968: =over 4
2969:
2970: =item * &endbodytag()
2971:
2972: Returns a uniform footer for LON-CAPA web pages.
2973:
2974: Inputs: none
2975:
2976: =back
2977:
2978: =cut
2979:
2980: sub endbodytag {
2981: my $endbodytag='</body>';
2982: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
2983: if ( exists( $env{'internal.head.redirect'} ) ) {
2984: $endbodytag=
2985: "<br /><a href=\"$env{'internal.head.redirect'}\">".
2986: &mt('Continue').'</a>'.
2987: $endbodytag;
2988: }
2989: return $endbodytag;
2990: }
2991:
2992: =pod
2993:
2994: =over 4
2995:
2996: =item * &headtag()
2997:
2998: Returns a uniform footer for LON-CAPA web pages.
2999:
3000: Inputs: $title - optional title for the head
3001: $head_extra - optional extra HTML to put inside the <head>
3002: $args - optional arguments
3003: force_register - if is true call registerurl so the remote is
3004: informed
3005:
3006: redirect - array ref of seconds before redirect occurs
3007: url to redirect to
3008: (side effect of setting
3009: $env{'internal.head.redirect'} to the url
3010: redirected too)
3011: =back
3012:
3013: =cut
3014:
3015: sub headtag {
3016: my ($title,$head_extra,$args) = @_;
3017:
3018: my $result =
3019: '<head>'.
3020: &Apache::lonxml::fontsettings().
3021: &Apache::lonhtmlcommon::htmlareaheaders();
3022:
3023: if ($args->{'force_register'}) {
3024: $result .= &Apache::lonmenu::registerurl(1);
3025: }
3026:
3027: if (ref($args->{'redirect'})) {
3028: my ($time,$url) = @{$args->{'redirect'}};
3029: $url = &Apache::lonenc::check_encrypt($url);
3030: $env{'internal.head.redirect'} = $url;
3031: $result.=<<ADDMETA
3032: <meta http-equiv="pragma" content="no-cache" />
3033: <meta HTTP-EQUIV="Refresh" CONTENT="$time; url=$url" />
3034: ADDMETA
3035: }
3036: if (!defined($title)) {
3037: $title = 'The LearningOnline Network with CAPA';
3038: }
3039:
3040: $result .= '<title> LON-CAPA '.&mt($title).'</title>'.$head_extra;
3041: return $result;
3042: }
3043:
3044: =pod
3045:
3046: =over 4
3047:
3048: =item * &endheadtag()
3049:
3050: Returns a uniform </head> for LON-CAPA web pages.
3051:
3052: Inputs: none
3053:
3054: =back
3055:
3056: =cut
3057:
3058: sub endheadtag {
3059: return '</head>';
3060: }
3061:
3062: =pod
3063:
3064: =over 4
3065:
3066: =item * &head()
3067:
3068: Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
3069:
3070: Inputs: $title - optional title for the page
3071: $head_extra - optional extra HTML to put inside the <head>
3072: =back
3073:
3074: =cut
3075:
3076: sub head {
3077: my ($title,$head_extra,$args) = @_;
3078: return &headtag($title,$head_extra,$args).&endheadtag();
3079: }
3080:
3081: =pod
3082:
3083: =over 4
3084:
3085: =item * &start_page()
3086:
3087: Returns a complete <html> .. <body> section for LON-CAPA web pages.
3088:
3089: Inputs: $title - optional title for the page
3090: $head_extra - optional extra HTML to incude inside the <head>
3091: $args - additional optional args supported are:
3092: only_body -> is true will set &bodytag() onlybodytag
3093: arg on
3094: no_nav_bar -> is true will set &bodytag() notopbar arg on
3095: add_entries -> additional attributes to add to the <body>
3096: domain -> force to color decorate a page for a
3097: specific domain
3098: function -> force usage of a specific rolish color
3099: scheme
3100: redirect -> see &headtag()
3101: bgcolor -> override the default page bg color
3102: js_ready -> return a string ready for being used in
3103: a javascript writeln
3104: html_encode -> return a string ready for being used in
3105: a html attribute
3106: force_register -> if is true will turn on the &bodytag()
3107: $forcereg arg
3108: body_title -> alternate text to use instead of $title
3109: in the title box that appears, this text
3110: is not auto translated like the $title is
3111: frameset -> if true will start with a <frameset>
3112: rather than <body>
3113: =back
3114:
3115: =cut
3116:
3117: sub start_page {
3118: my ($title,$head_extra,$args) = @_;
3119: #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
3120: my %head_args;
3121: foreach my $arg ('redirect','force_register') {
3122: if (defined($args->{$arg})) {
3123: $head_args{$arg} = $args->{$arg};
3124: }
3125: }
3126:
3127: $env{'internal.start_page'}++;
3128: my $result =
3129: &Apache::lonxml::xmlbegin().
3130: &headtag($title,$head_extra,\%head_args).&endheadtag();
3131: if ($args->{'frameset'}) {
3132: my $attr_string = &make_attr_string($args->{'force_register'},
3133: $args->{'add_entries'});
3134: $result .= "\n<frameset $attr_string>\n";
3135: } else {
3136: $result .=
3137: &bodytag($title,
3138: $args->{'function'}, $args->{'add_entries'},
3139: $args->{'only_body'}, $args->{'domain'},
3140: $args->{'force_register'}, $args->{'body_title'},
3141: $args->{'no_nav_bar'}, $args->{'bgcolor'});
3142: }
3143: if ($args->{'js_ready'}) {
3144: $result = &js_ready($result);
3145: }
3146: if ($args->{'html_encode'}) {
3147: $result = &html_encode($result);
3148: }
3149: return $result;
3150: }
3151:
3152:
3153: =pod
3154:
3155: =over 4
3156:
3157: =item * &head()
3158:
3159: Returns a complete </body></html> section for LON-CAPA web pages.
3160:
3161: Inputs: $args - additional optional args supported are:
3162: js_ready -> return a string ready for being used in
3163: a javascript writeln
3164: html_encode -> return a string ready for being used in
3165: a html attribute
3166: frameset -> if true will start with a <frameset>
3167: rather than <body>
3168: =back
3169:
3170: =cut
3171:
3172: sub end_page {
3173: my ($args) = @_;
3174: #&Apache::lonnet::logthis("end_page ".join(':',caller(0)));
3175: $env{'internal.end_page'}++;
3176: my $result;
3177: if ($args->{'frameset'}) {
3178: $result .= '</frameset>';
3179: } else {
3180: $result .= &endbodytag();
3181: }
3182: $result .= "\n</html>";
3183:
3184: if ($args->{'js_ready'}) {
3185: $result = &js_ready($result);
3186: }
3187: if ($args->{'html_encode'}) {
3188: $result = &html_encode($result);
3189: }
3190: return $result;
3191: }
3192:
3193: sub html_encode {
3194: my ($result) = @_;
3195:
3196: $result = &HTML::Entities::encode($result,'<>&"');
3197:
3198: return $result;
3199: }
3200: sub js_ready {
3201: my ($result) = @_;
3202:
3203: $result =~ s/[\n\r]/ /xmsg;
3204: $result =~ s/\\/\\\\/xmsg;
3205: $result =~ s/'/\\'/xmsg;
3206: $result =~ s{</script>}{</scrip'+'t>}xmsg;
3207:
3208: return $result;
3209: }
3210:
3211: sub validate_page {
3212: if ( exists($env{'internal.start_page'})
3213: && $env{'internal.start_page'} > 1) {
3214: &Apache::lonnet::logthis('start_page called multiple times '.
3215: $env{'internal.start_page'}.' '.
3216: $ENV{'request.filename'});
3217: }
3218: if ( exists($env{'internal.end_page'})
3219: && $env{'internal.end_page'} > 1) {
3220: &Apache::lonnet::logthis('end_page called multiple times '.
3221: $env{'internal.end_page'}.' '.
3222: $env{'request.filename'});
3223: }
3224: if ( exists($env{'internal.start_page'})
3225: && ! exists($env{'internal.end_page'})) {
3226: &Apache::lonnet::logthis('start_page called without end_page '.
3227: $env{'request.filename'});
3228: }
3229: if ( ! exists($env{'internal.start_page'})
3230: && exists($env{'internal.end_page'})) {
3231: &Apache::lonnet::logthis('end_page called without start_page'.
3232: $env{'request.filename'});
3233: }
3234: }
3235:
3236: sub simple_error_page {
3237: my ($r,$title,$msg) = @_;
3238: my $page =
3239: &Apache::loncommon::start_page($title).
3240: &mt($msg).
3241: &Apache::loncommon::end_page();
3242: if (ref($r)) {
3243: $r->print($page);
3244: return;
3245: }
3246: return $page;
3247: }
3248: ###############################################
3249:
3250: =pod
3251:
3252: =over 4
3253:
3254: =item get_users_function
3255:
3256: Used by &bodytag to determine the current users primary role.
3257: Returns either 'student','coordinator','admin', or 'author'.
3258:
3259: =cut
3260:
3261: ###############################################
3262: sub get_users_function {
3263: my $function = 'student';
3264: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
3265: $function='coordinator';
3266: }
3267: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
3268: $function='admin';
3269: }
3270: if (($env{'request.role'}=~/^(au|ca)/) ||
3271: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
3272: $function='author';
3273: }
3274: return $function;
3275: }
3276:
3277: ###############################################
3278:
3279: =pod
3280:
3281: =item check_user_status
3282:
3283: Determines current status of supplied role for a
3284: specific user. Roles can be active, previous or future.
3285:
3286: Inputs:
3287: user's domain, user's username, course's domain,
3288: course's number, optional section/group.
3289:
3290: Outputs:
3291: role status: active, previous or future.
3292:
3293: =cut
3294:
3295: sub check_user_status {
3296: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
3297: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
3298: my @uroles = keys %userinfo;
3299: my $srchstr;
3300: my $active_chk = 'none';
3301: if (@uroles > 0) {
3302: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
3303: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3304: } else {
3305: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3306: if (grep/^$srchstr$/,@uroles) {
3307: my $role_end = 0;
3308: my $role_start = 0;
3309: $active_chk = 'active';
3310: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3311: $role_end = $2;
3312: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3313: $role_start = $3;
3314: }
3315: }
3316: if ($role_start > 0) {
3317: if (time < $role_start) {
3318: $active_chk = 'future';
3319: }
3320: }
3321: if ($role_end > 0) {
3322: if (time > $role_end) {
3323: $active_chk = 'previous';
3324: }
3325: }
3326: }
3327: }
3328: return $active_chk;
3329: }
3330:
3331: ###############################################
3332:
3333: =pod
3334:
3335: =item get_sections
3336:
3337: Determines all the sections for a course including
3338: sections with students and sections containing other roles.
3339: Incoming parameters: domain, course number, reference to
3340: section hash (keys to be section/group IDs), reference to
3341: array containing roles for which sections should be gathered
3342: (optional). If the fourth argument is undefined, sections
3343: are gathered for any role.
3344:
3345: Returns number of sections.
3346:
3347: =cut
3348:
3349: ###############################################
3350: sub get_sections {
3351: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
3352: if (!($cdom && $cnum)) { return 0; }
3353: my $numsections = 0;
3354:
3355: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
3356: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
3357: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3358: my $status_index = &Apache::loncoursedata::CL_STATUS();
3359: while (my ($student,$data) = each %$classlist) {
3360: my ($section,$status) = ($data->[$sec_index],
3361: $data->[$status_index]);
3362: unless ($section eq '-1' || $section =~ /^\s*$/) {
3363: if (!defined($$sectioncount{$section})) { $numsections++; }
3364: $$sectioncount{$section}++;
3365: }
3366: }
3367: }
3368: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3369: foreach my $user (sort(keys(%courseroles))) {
3370: if ($user !~ /^(\w{2})/) { next; }
3371: my ($role) = ($user =~ /^(\w{2})/);
3372: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3373: my $section;
3374: if ($role eq 'cr' &&
3375: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3376: $section=$1;
3377: }
3378: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3379: if (!defined($section) || $section eq '-1') { next; }
3380: if (!defined($$sectioncount{$section})) { $numsections++; }
3381: $$sectioncount{$section}++;
3382: }
3383: return $numsections;
3384: }
3385:
3386: ###############################################
3387:
3388: =pod
3389:
3390: =item coursegroups
3391:
3392: Retrieve information about groups in a course,
3393:
3394: Input:
3395: 1. Reference to hash to populate with group information.
3396: 2. Optional course domain
3397: 3. Optional course number
3398: 4. Optional group name
3399:
3400: Course domain and number will be taken from user's
3401: environment if not supplied. Optional group name will'
3402: be passed to lonnet::get_coursegroups() as a regexp to
3403: use in the call to the dump function.
3404:
3405: Output
3406: Returns number of groups in the course (subject to the
3407: optional group name filter).
3408:
3409: Side effects:
3410: Populates the referenced curr_groups hash, with key,
3411: value pairs. Keys are group names, corresponding values
3412: are scalars containing group information in XML. This
3413: can be sent to &get_group_settings() to be parsed.
3414:
3415: =cut
3416:
3417: ###############################################
3418:
3419: sub coursegroups {
3420: my ($curr_groups,$cdom,$cnum,$group) = @_;
3421: my $numgroups;
3422: if (!defined($cdom) || !defined($cnum)) {
3423: my $cid = $env{'request.course.id'};
3424: $cdom = $env{'course.'.$cid.'.domain'};
3425: $cnum = $env{'course.'.$cid.'.num'};
3426: }
3427: %{$curr_groups} = &Apache::lonnet::get_coursegroups($cdom,$cnum,$group);
3428: my ($tmp) = keys(%{$curr_groups});
3429: if ($tmp=~/^error:/) {
3430: unless ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
3431: &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.
3432: $cdom);
3433: }
3434: $numgroups = 0;
3435: } else {
3436: $numgroups = keys(%{$curr_groups});
3437: }
3438: return $numgroups;
3439: }
3440:
3441: ###############################################
3442:
3443: =pod
3444:
3445: =item get_group_settings
3446:
3447: Uses TokeParser to extract group information from the
3448: XML used to describe course groups.
3449:
3450: Input:
3451: Scalar containing XML - as retrieved from &coursegroups().
3452:
3453: Output:
3454: Hash containing group information as key=values for (a), and
3455: hash of hashes for (b)
3456:
3457: Keys (in two categories):
3458: (a) groupname, creator, creation, modified, startdate,enddate.
3459: Corresponding values are name of the group, creator of the group
3460: (username:domain), UNIX time for date group was created, and
3461: settings were last modified, and default start and end access
3462: times for group members.
3463:
3464: (b) functions returned in hash of hashes.
3465: Outer hash key is functions.
3466: Inner hash keys are chat,discussion,email,files,homepage,roster.
3467: Corresponding values are either on or off, depending on
3468: whether this type of functionality is available for the group.
3469:
3470: =cut
3471:
3472: ###############################################
3473:
3474: sub get_group_settings {
3475: my ($groupinfo)=@_;
3476: my $parser=HTML::TokeParser->new(\$groupinfo);
3477: my $token;
3478: my $tool = '';
3479: my $role = '';
3480: my %content=();
3481: while ($token=$parser->get_token) {
3482: if ($token->[0] eq 'S') {
3483: my $entry=$token->[1];
3484: if ($entry eq 'functions' || $entry eq 'autosec') {
3485: %{$content{$entry}} = ();
3486: $tool = $entry;
3487: } elsif ($entry eq 'role') {
3488: if ($tool eq 'autosec') {
3489: $role = $token->[2]{id};
3490: }
3491: } else {
3492: my $value=$parser->get_text('/'.$entry);
3493: if ($entry eq 'name') {
3494: if ($tool eq 'functions') {
3495: my $function = $token->[2]{id};
3496: $content{$tool}{$function} = $value;
3497: }
3498: } elsif ($entry eq 'groupname') {
3499: $content{$entry}=&Apache::lonnet::unescape($value);
3500: } elsif (($entry eq 'roles') || ($entry eq 'types') ||
3501: ($entry eq 'sectionpick') || ($entry eq 'defpriv')) {
3502: push(@{$content{$entry}},$value);
3503: } elsif ($entry eq 'section') {
3504: if ($tool eq 'autosec' && $role ne '') {
3505: push(@{$content{$tool}{$role}},$value);
3506: }
3507: } else {
3508: $content{$entry}=$value;
3509: }
3510: }
3511: } elsif ($token->[0] eq 'E') {
3512: if ($token->[1] eq 'functions' || $token->[1] eq 'autosec') {
3513: $tool = '';
3514: } elsif ($token->[1] eq 'role') {
3515: $role = '';
3516: }
3517:
3518: }
3519: }
3520: return %content;
3521: }
3522:
3523: sub check_group_access {
3524: my ($group) = @_;
3525: my $access = 1;
3526: my $now = time;
3527: my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
3528: if (($end!=0) && ($end<$now)) { $access = 0; }
3529: if (($start!=0) && ($start>$now)) { $access=0; }
3530: return $access;
3531: }
3532:
3533: ###############################################
3534:
3535: =pod
3536:
3537: =item get_course_users
3538:
3539: Retrieves usernames:domains for users in the specified course
3540: with specific role(s), and access status.
3541:
3542: Incoming parameters:
3543: 1. course domain
3544: 2. course number
3545: 3. access status: users must have - either active,
3546: previous, future, or all.
3547: 4. reference to array of permissible roles
3548: 5. reference to array of section restrictions (optional)
3549: 6. reference to results object (hash of hashes).
3550: 7. reference to optional userdata hash
3551: Keys of top level hash are roles.
3552: Keys of inner hashes are username:domain, with
3553: values set to access type.
3554: Optional userdata hash returns an array with arguments in the
3555: same order as loncoursedata::get_classlist() for student data.
3556:
3557: Entries for end, start, section and status are blank because
3558: of the possibility of multiple values for non-student roles.
3559:
3560: =cut
3561:
3562: ###############################################
3563:
3564: sub get_course_users {
3565: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
3566: my %idx = ();
3567:
3568: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
3569: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
3570: $idx{end} = &Apache::loncoursedata::CL_END();
3571: $idx{start} = &Apache::loncoursedata::CL_START();
3572: $idx{id} = &Apache::loncoursedata::CL_ID();
3573: $idx{section} = &Apache::loncoursedata::CL_SECTION();
3574: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
3575: $idx{status} = &Apache::loncoursedata::CL_STATUS();
3576:
3577: if (grep(/^st$/,@{$roles})) {
3578: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
3579: my $now = time;
3580: foreach my $student (keys(%{$classlist})) {
3581: my $match = 0;
3582: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
3583: unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
3584: @{$sections})) {
3585: next;
3586: }
3587: }
3588: if (defined($$types{'active'})) {
3589: if ($$classlist{$student}[$idx{status}] eq 'Active') {
3590: push(@{$$users{st}{$student}},'active');
3591: $match = 1;
3592: }
3593: }
3594: if (defined($$types{'previous'})) {
3595: if ($$classlist{$student}[$idx{end}] <= $now) {
3596: push(@{$$users{st}{$student}},'previous');
3597: $match = 1;
3598: }
3599: }
3600: if (defined($$types{'future'})) {
3601: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
3602: push(@{$$users{st}{$student}},'future');
3603: $match = 1;
3604: }
3605: }
3606: if ($match && defined($userdata)) {
3607: $$userdata{$student} = $$classlist{$student};
3608: }
3609: }
3610: }
3611: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
3612: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
3613: foreach my $person (@coursepersonnel) {
3614: my $match = 0;
3615: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
3616: $user =~ s/:$//;
3617: if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
3618: my ($uname,$udom,$usec) = split(/:/,$user);
3619: if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
3620: @{$sections} > 0) {
3621: unless(grep(/^\Q$usec\E$/,@{$sections})) {
3622: next;
3623: }
3624: }
3625: if ($uname ne '' && $udom ne '') {
3626: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
3627: foreach my $type (keys(%{$types})) {
3628: if ($status eq $type) {
3629: @{$$users{$role}{$user}} = $type;
3630: $match = 1;
3631: }
3632: }
3633: if ($match && defined($userdata) &&
3634: !exists($$userdata{$uname.':'.$udom})) {
3635: &get_user_info($udom,$uname,\%idx,$userdata);
3636: }
3637: }
3638: }
3639: }
3640: if (grep(/^ow$/,@{$roles})) {
3641: if ((defined($cdom)) && (defined($cnum))) {
3642: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
3643: if ( defined($csettings{'internal.courseowner'}) ) {
3644: my $owner = $csettings{'internal.courseowner'};
3645: @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
3646: if (defined($userdata) &&
3647: !exists($$userdata{$owner.':'.$cdom})) {
3648: &get_user_info($cdom,$owner,\%idx,$userdata);
3649: }
3650: }
3651: }
3652: }
3653: }
3654: return;
3655: }
3656:
3657: sub get_user_info {
3658: my ($udom,$uname,$idx,$userdata) = @_;
3659: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
3660: &plainname($uname,$udom,'lastname');
3661: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
3662: $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
3663: return;
3664: }
3665:
3666: ###############################################
3667:
3668: sub get_posted_cgi {
3669: my $r=shift;
3670:
3671: my $buffer;
3672: if ($r->header_in('Content-length')) {
3673: $r->read($buffer,$r->header_in('Content-length'),0);
3674: }
3675: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
3676: my @pairs=split(/&/,$buffer);
3677: my $pair;
3678: foreach $pair (@pairs) {
3679: my ($name,$value) = split(/=/,$pair);
3680: $value =~ tr/+/ /;
3681: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3682: $name =~ tr/+/ /;
3683: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3684: &add_to_env("form.$name",$value);
3685: }
3686: } else {
3687: my $contentsep=$1;
3688: my @lines = split (/\n/,$buffer);
3689: my $name='';
3690: my $value='';
3691: my $fname='';
3692: my $fmime='';
3693: my $i;
3694: for ($i=0;$i<=$#lines;$i++) {
3695: if ($lines[$i]=~/^$contentsep/) {
3696: if ($name) {
3697: chomp($value);
3698: if ($fname) {
3699: $env{"form.$name.filename"}=$fname;
3700: $env{"form.$name.mimetype"}=$fmime;
3701: } else {
3702: $value=~s/\s+$//s;
3703: }
3704: &add_to_env("form.$name",$value);
3705: }
3706: if ($i<$#lines) {
3707: $i++;
3708: $lines[$i]=~
3709: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
3710: $name=$1;
3711: $value='';
3712: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
3713: $fname=$1;
3714: if
3715: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
3716: $fmime=$1;
3717: $i++;
3718: } else {
3719: $fmime='';
3720: }
3721: } else {
3722: $fname='';
3723: $fmime='';
3724: }
3725: $i++;
3726: }
3727: } else {
3728: $value.=$lines[$i]."\n";
3729: }
3730: }
3731: }
3732: #
3733: # Digested POSTed values
3734: #
3735: # Remember the way this was originally done (GET or POST)
3736: #
3737: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
3738: #
3739: # There may also be stuff in the query string
3740: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
3741: # Also, unset POSTed content length to cover all tracks.
3742: #
3743:
3744: # This does not work, because M_GET is not defined (if it's defined, it is just 0).
3745: # Commenting out for now ... not sure if harm is done.
3746: # $r->method_number(M_GET);
3747:
3748: $r->method('GET');
3749: $r->headers_in->unset('Content-length');
3750: }
3751:
3752: =pod
3753:
3754: =item * get_unprocessed_cgi($query,$possible_names)
3755:
3756: Modify the %env hash to contain unprocessed CGI form parameters held in
3757: $query. The parameters listed in $possible_names (an array reference),
3758: will be set in $env{'form.name'} if they do not already exist.
3759:
3760: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3761: $possible_names is an ref to an array of form element names. As an example:
3762: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
3763: will result in $env{'form.uname'} and $env{'form.udom'} being set.
3764:
3765: =cut
3766:
3767: sub get_unprocessed_cgi {
3768: my ($query,$possible_names)= @_;
3769: # $Apache::lonxml::debug=1;
3770: foreach (split(/&/,$query)) {
3771: my ($name, $value) = split(/=/,$_);
3772: $name = &Apache::lonnet::unescape($name);
3773: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3774: $value =~ tr/+/ /;
3775: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3776: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
3777: }
3778: }
3779: }
3780:
3781: =pod
3782:
3783: =item * cacheheader()
3784:
3785: returns cache-controlling header code
3786:
3787: =cut
3788:
3789: sub cacheheader {
3790: unless ($env{'request.method'} eq 'GET') { return ''; }
3791: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3792: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
3793: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3794: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
3795: return $output;
3796: }
3797:
3798: =pod
3799:
3800: =item * no_cache($r)
3801:
3802: specifies header code to not have cache
3803:
3804: =cut
3805:
3806: sub no_cache {
3807: my ($r) = @_;
3808: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
3809: $env{'request.method'} ne 'GET') { return ''; }
3810: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3811: $r->no_cache(1);
3812: $r->header_out("Expires" => $date);
3813: $r->header_out("Pragma" => "no-cache");
3814: }
3815:
3816: sub content_type {
3817: my ($r,$type,$charset) = @_;
3818: if ($r) {
3819: # Note that printout.pl calls this with undef for $r.
3820: &no_cache($r);
3821: }
3822: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
3823: unless ($charset) {
3824: $charset=&Apache::lonlocal::current_encoding;
3825: }
3826: if ($charset) { $type.='; charset='.$charset; }
3827: if ($r) {
3828: $r->content_type($type);
3829: } else {
3830: print("Content-type: $type\n\n");
3831: }
3832: }
3833:
3834: =pod
3835:
3836: =item * add_to_env($name,$value)
3837:
3838: adds $name to the %env hash with value
3839: $value, if $name already exists, the entry is converted to an array
3840: reference and $value is added to the array.
3841:
3842: =cut
3843:
3844: sub add_to_env {
3845: my ($name,$value)=@_;
3846: if (defined($env{$name})) {
3847: if (ref($env{$name})) {
3848: #already have multiple values
3849: push(@{ $env{$name} },$value);
3850: } else {
3851: #first time seeing multiple values, convert hash entry to an arrayref
3852: my $first=$env{$name};
3853: undef($env{$name});
3854: push(@{ $env{$name} },$first,$value);
3855: }
3856: } else {
3857: $env{$name}=$value;
3858: }
3859: }
3860:
3861: =pod
3862:
3863: =item * get_env_multiple($name)
3864:
3865: gets $name from the %env hash, it seemlessly handles the cases where multiple
3866: values may be defined and end up as an array ref.
3867:
3868: returns an array of values
3869:
3870: =cut
3871:
3872: sub get_env_multiple {
3873: my ($name) = @_;
3874: my @values;
3875: if (defined($env{$name})) {
3876: # exists is it an array
3877: if (ref($env{$name})) {
3878: @values=@{ $env{$name} };
3879: } else {
3880: $values[0]=$env{$name};
3881: }
3882: }
3883: return(@values);
3884: }
3885:
3886:
3887: =pod
3888:
3889: =back
3890:
3891: =head1 CSV Upload/Handling functions
3892:
3893: =over 4
3894:
3895: =item * upfile_store($r)
3896:
3897: Store uploaded file, $r should be the HTTP Request object,
3898: needs $env{'form.upfile'}
3899: returns $datatoken to be put into hidden field
3900:
3901: =cut
3902:
3903: sub upfile_store {
3904: my $r=shift;
3905: $env{'form.upfile'}=~s/\r/\n/gs;
3906: $env{'form.upfile'}=~s/\f/\n/gs;
3907: $env{'form.upfile'}=~s/\n+/\n/gs;
3908: $env{'form.upfile'}=~s/\n+$//gs;
3909:
3910: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
3911: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
3912: {
3913: my $datafile = $r->dir_config('lonDaemons').
3914: '/tmp/'.$datatoken.'.tmp';
3915: if ( open(my $fh,">$datafile") ) {
3916: print $fh $env{'form.upfile'};
3917: close($fh);
3918: }
3919: }
3920: return $datatoken;
3921: }
3922:
3923: =pod
3924:
3925: =item * load_tmp_file($r)
3926:
3927: Load uploaded file from tmp, $r should be the HTTP Request object,
3928: needs $env{'form.datatoken'},
3929: sets $env{'form.upfile'} to the contents of the file
3930:
3931: =cut
3932:
3933: sub load_tmp_file {
3934: my $r=shift;
3935: my @studentdata=();
3936: {
3937: my $studentfile = $r->dir_config('lonDaemons').
3938: '/tmp/'.$env{'form.datatoken'}.'.tmp';
3939: if ( open(my $fh,"<$studentfile") ) {
3940: @studentdata=<$fh>;
3941: close($fh);
3942: }
3943: }
3944: $env{'form.upfile'}=join('',@studentdata);
3945: }
3946:
3947: =pod
3948:
3949: =item * upfile_record_sep()
3950:
3951: Separate uploaded file into records
3952: returns array of records,
3953: needs $env{'form.upfile'} and $env{'form.upfiletype'}
3954:
3955: =cut
3956:
3957: sub upfile_record_sep {
3958: if ($env{'form.upfiletype'} eq 'xml') {
3959: } else {
3960: my @records;
3961: foreach my $line (split(/\n/,$env{'form.upfile'})) {
3962: if ($line=~/^\s*$/) { next; }
3963: push(@records,$line);
3964: }
3965: return @records;
3966: }
3967: }
3968:
3969: =pod
3970:
3971: =item * record_sep($record)
3972:
3973: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
3974:
3975: =cut
3976:
3977: sub takeleft {
3978: my $index=shift;
3979: return substr('0000'.$index,-4,4);
3980: }
3981:
3982: sub record_sep {
3983: my $record=shift;
3984: my %components=();
3985: if ($env{'form.upfiletype'} eq 'xml') {
3986: } elsif ($env{'form.upfiletype'} eq 'space') {
3987: my $i=0;
3988: foreach (split(/\s+/,$record)) {
3989: my $field=$_;
3990: $field=~s/^(\"|\')//;
3991: $field=~s/(\"|\')$//;
3992: $components{&takeleft($i)}=$field;
3993: $i++;
3994: }
3995: } elsif ($env{'form.upfiletype'} eq 'tab') {
3996: my $i=0;
3997: foreach (split(/\t/,$record)) {
3998: my $field=$_;
3999: $field=~s/^(\"|\')//;
4000: $field=~s/(\"|\')$//;
4001: $components{&takeleft($i)}=$field;
4002: $i++;
4003: }
4004: } else {
4005: my @allfields=split(/\,/,$record);
4006: my $i=0;
4007: my $j;
4008: for ($j=0;$j<=$#allfields;$j++) {
4009: my $field=$allfields[$j];
4010: if ($field=~/^\s*(\"|\')/) {
4011: my $delimiter=$1;
4012: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
4013: $j++;
4014: $field.=','.$allfields[$j];
4015: }
4016: $field=~s/^\s*$delimiter//;
4017: $field=~s/$delimiter\s*$//;
4018: }
4019: $components{&takeleft($i)}=$field;
4020: $i++;
4021: }
4022: }
4023: return %components;
4024: }
4025:
4026: ######################################################
4027: ######################################################
4028:
4029: =pod
4030:
4031: =item * upfile_select_html()
4032:
4033: Return HTML code to select a file from the users machine and specify
4034: the file type.
4035:
4036: =cut
4037:
4038: ######################################################
4039: ######################################################
4040: sub upfile_select_html {
4041: my %Types = (
4042: csv => &mt('CSV (comma separated values, spreadsheet)'),
4043: space => &mt('Space separated'),
4044: tab => &mt('Tabulator separated'),
4045: # xml => &mt('HTML/XML'),
4046: );
4047: my $Str = '<input type="file" name="upfile" size="50" />'.
4048: '<br />Type: <select name="upfiletype">';
4049: foreach my $type (sort(keys(%Types))) {
4050: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
4051: }
4052: $Str .= "</select>\n";
4053: return $Str;
4054: }
4055:
4056: sub get_samples {
4057: my ($records,$toget) = @_;
4058: my @samples=({});
4059: my $got=0;
4060: foreach my $rec (@$records) {
4061: my %temp = &record_sep($rec);
4062: if (! grep(/\S/, values(%temp))) { next; }
4063: if (%temp) {
4064: $samples[$got]=\%temp;
4065: $got++;
4066: if ($got == $toget) { last; }
4067: }
4068: }
4069: return \@samples;
4070: }
4071:
4072: ######################################################
4073: ######################################################
4074:
4075: =pod
4076:
4077: =item * csv_print_samples($r,$records)
4078:
4079: Prints a table of sample values from each column uploaded $r is an
4080: Apache Request ref, $records is an arrayref from
4081: &Apache::loncommon::upfile_record_sep
4082:
4083: =cut
4084:
4085: ######################################################
4086: ######################################################
4087: sub csv_print_samples {
4088: my ($r,$records) = @_;
4089: my $samples = &get_samples($records,3);
4090:
4091: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
4092: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4093: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
4094: $r->print('</tr>');
4095: foreach my $hash (@$samples) {
4096: $r->print('<tr>');
4097: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4098: $r->print('<td>');
4099: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
4100: $r->print('</td>');
4101: }
4102: $r->print('</tr>');
4103: }
4104: $r->print('</tr></table><br />'."\n");
4105: }
4106:
4107: ######################################################
4108: ######################################################
4109:
4110: =pod
4111:
4112: =item * csv_print_select_table($r,$records,$d)
4113:
4114: Prints a table to create associations between values and table columns.
4115:
4116: $r is an Apache Request ref,
4117: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4118: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
4119:
4120: =cut
4121:
4122: ######################################################
4123: ######################################################
4124: sub csv_print_select_table {
4125: my ($r,$records,$d) = @_;
4126: my $i=0;
4127: my $samples = &get_samples($records,1);
4128: $r->print(&mt('Associate columns with student attributes.')."\n".
4129: '<table border="2"><tr>'.
4130: '<th>'.&mt('Attribute').'</th>'.
4131: '<th>'.&mt('Column').'</th></tr>'."\n");
4132: foreach (@$d) {
4133: my ($value,$display,$defaultcol)=@{ $_ };
4134: $r->print('<tr><td>'.$display.'</td>');
4135:
4136: $r->print('<td><select name=f'.$i.
4137: ' onchange="javascript:flip(this.form,'.$i.');">');
4138: $r->print('<option value="none"></option>');
4139: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4140: $r->print('<option value="'.$_.'"'.
4141: ($_ eq $defaultcol ? ' selected="selected" ' : '').
4142: '>Column '.($_+1).'</option>');
4143: }
4144: $r->print('</select></td></tr>'."\n");
4145: $i++;
4146: }
4147: $i--;
4148: return $i;
4149: }
4150:
4151: ######################################################
4152: ######################################################
4153:
4154: =pod
4155:
4156: =item * csv_samples_select_table($r,$records,$d)
4157:
4158: Prints a table of sample values from the upload and can make associate samples to internal names.
4159:
4160: $r is an Apache Request ref,
4161: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4162: $d is an array of 2 element arrays (internal name, displayed name)
4163:
4164: =cut
4165:
4166: ######################################################
4167: ######################################################
4168: sub csv_samples_select_table {
4169: my ($r,$records,$d) = @_;
4170: my $i=0;
4171: #
4172: my $samples = &get_samples($records,3);
4173: $r->print('<table border=2><tr><th>'.
4174: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
4175:
4176: foreach my $key (sort(keys(%{ $samples->[0] }))) {
4177: $r->print('<tr><td><select name="f'.$i.'"'.
4178: ' onchange="javascript:flip(this.form,'.$i.');">');
4179: foreach my $option (@$d) {
4180: my ($value,$display,$defaultcol)=@{ $option };
4181: $r->print('<option value="'.$value.'"'.
4182: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
4183: $display.'</option>');
4184: }
4185: $r->print('</select></td><td>');
4186: foreach my $line (0..2) {
4187: if (defined($samples->[$line]{$key})) {
4188: $r->print($samples->[$line]{$key}."<br />\n");
4189: }
4190: }
4191: $r->print('</td></tr>');
4192: $i++;
4193: }
4194: $i--;
4195: return($i);
4196: }
4197:
4198: ######################################################
4199: ######################################################
4200:
4201: =pod
4202:
4203: =item clean_excel_name($name)
4204:
4205: Returns a replacement for $name which does not contain any illegal characters.
4206:
4207: =cut
4208:
4209: ######################################################
4210: ######################################################
4211: sub clean_excel_name {
4212: my ($name) = @_;
4213: $name =~ s/[:\*\?\/\\]//g;
4214: if (length($name) > 31) {
4215: $name = substr($name,0,31);
4216: }
4217: return $name;
4218: }
4219:
4220: =pod
4221:
4222: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
4223:
4224: Returns either 1 or undef
4225:
4226: 1 if the part is to be hidden, undef if it is to be shown
4227:
4228: Arguments are:
4229:
4230: $id the id of the part to be checked
4231: $symb, optional the symb of the resource to check
4232: $udom, optional the domain of the user to check for
4233: $uname, optional the username of the user to check for
4234:
4235: =cut
4236:
4237: sub check_if_partid_hidden {
4238: my ($id,$symb,$udom,$uname) = @_;
4239: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
4240: $symb,$udom,$uname);
4241: my $truth=1;
4242: #if the string starts with !, then the list is the list to show not hide
4243: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
4244: my @hiddenlist=split(/,/,$hiddenparts);
4245: foreach my $checkid (@hiddenlist) {
4246: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
4247: }
4248: return !$truth;
4249: }
4250:
4251:
4252: ############################################################
4253: ############################################################
4254:
4255: =pod
4256:
4257: =back
4258:
4259: =head1 cgi-bin script and graphing routines
4260:
4261: =over 4
4262:
4263: =item get_cgi_id
4264:
4265: Inputs: none
4266:
4267: Returns an id which can be used to pass environment variables
4268: to various cgi-bin scripts. These environment variables will
4269: be removed from the users environment after a given time by
4270: the routine &Apache::lonnet::transfer_profile_to_env.
4271:
4272: =cut
4273:
4274: ############################################################
4275: ############################################################
4276: my $uniq=0;
4277: sub get_cgi_id {
4278: $uniq=($uniq+1)%100000;
4279: return (time.'_'.$$.'_'.$uniq);
4280: }
4281:
4282: ############################################################
4283: ############################################################
4284:
4285: =pod
4286:
4287: =item DrawBarGraph
4288:
4289: Facilitates the plotting of data in a (stacked) bar graph.
4290: Puts plot definition data into the users environment in order for
4291: graph.png to plot it. Returns an <img> tag for the plot.
4292: The bars on the plot are labeled '1','2',...,'n'.
4293:
4294: Inputs:
4295:
4296: =over 4
4297:
4298: =item $Title: string, the title of the plot
4299:
4300: =item $xlabel: string, text describing the X-axis of the plot
4301:
4302: =item $ylabel: string, text describing the Y-axis of the plot
4303:
4304: =item $Max: scalar, the maximum Y value to use in the plot
4305: If $Max is < any data point, the graph will not be rendered.
4306:
4307: =item $colors: array ref holding the colors to be used for the data sets when
4308: they are plotted. If undefined, default values will be used.
4309:
4310: =item $labels: array ref holding the labels to use on the x-axis for the bars.
4311:
4312: =item @Values: An array of array references. Each array reference holds data
4313: to be plotted in a stacked bar chart.
4314:
4315: =item If the final element of @Values is a hash reference the key/value
4316: pairs will be added to the graph definition.
4317:
4318: =back
4319:
4320: Returns:
4321:
4322: An <img> tag which references graph.png and the appropriate identifying
4323: information for the plot.
4324:
4325: =cut
4326:
4327: ############################################################
4328: ############################################################
4329: sub DrawBarGraph {
4330: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
4331: #
4332: if (! defined($colors)) {
4333: $colors = ['#33ff00',
4334: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
4335: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
4336: ];
4337: }
4338: my $extra_settings = {};
4339: if (ref($Values[-1]) eq 'HASH') {
4340: $extra_settings = pop(@Values);
4341: }
4342: #
4343: my $identifier = &get_cgi_id();
4344: my $id = 'cgi.'.$identifier;
4345: if (! @Values || ref($Values[0]) ne 'ARRAY') {
4346: return '';
4347: }
4348: #
4349: my @Labels;
4350: if (defined($labels)) {
4351: @Labels = @$labels;
4352: } else {
4353: for (my $i=0;$i<@{$Values[0]};$i++) {
4354: push (@Labels,$i+1);
4355: }
4356: }
4357: #
4358: my $NumBars = scalar(@{$Values[0]});
4359: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
4360: my %ValuesHash;
4361: my $NumSets=1;
4362: foreach my $array (@Values) {
4363: next if (! ref($array));
4364: $ValuesHash{$id.'.data.'.$NumSets++} =
4365: join(',',@$array);
4366: }
4367: #
4368: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
4369: if ($NumBars < 3) {
4370: $width = 120+$NumBars*32;
4371: $xskip = 1;
4372: $bar_width = 30;
4373: } elsif ($NumBars < 5) {
4374: $width = 120+$NumBars*20;
4375: $xskip = 1;
4376: $bar_width = 20;
4377: } elsif ($NumBars < 10) {
4378: $width = 120+$NumBars*15;
4379: $xskip = 1;
4380: $bar_width = 15;
4381: } elsif ($NumBars <= 25) {
4382: $width = 120+$NumBars*11;
4383: $xskip = 5;
4384: $bar_width = 8;
4385: } elsif ($NumBars <= 50) {
4386: $width = 120+$NumBars*8;
4387: $xskip = 5;
4388: $bar_width = 4;
4389: } else {
4390: $width = 120+$NumBars*8;
4391: $xskip = 5;
4392: $bar_width = 4;
4393: }
4394: #
4395: $Max = 1 if ($Max < 1);
4396: if ( int($Max) < $Max ) {
4397: $Max++;
4398: $Max = int($Max);
4399: }
4400: $Title = '' if (! defined($Title));
4401: $xlabel = '' if (! defined($xlabel));
4402: $ylabel = '' if (! defined($ylabel));
4403: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
4404: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
4405: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
4406: $ValuesHash{$id.'.y_max_value'} = $Max;
4407: $ValuesHash{$id.'.NumBars'} = $NumBars;
4408: $ValuesHash{$id.'.NumSets'} = $NumSets;
4409: $ValuesHash{$id.'.PlotType'} = 'bar';
4410: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4411: $ValuesHash{$id.'.height'} = $height;
4412: $ValuesHash{$id.'.width'} = $width;
4413: $ValuesHash{$id.'.xskip'} = $xskip;
4414: $ValuesHash{$id.'.bar_width'} = $bar_width;
4415: $ValuesHash{$id.'.labels'} = join(',',@Labels);
4416: #
4417: # Deal with other parameters
4418: while (my ($key,$value) = each(%$extra_settings)) {
4419: $ValuesHash{$id.'.'.$key} = $value;
4420: }
4421: #
4422: &Apache::lonnet::appenv(%ValuesHash);
4423: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4424: }
4425:
4426: ############################################################
4427: ############################################################
4428:
4429: =pod
4430:
4431: =item DrawXYGraph
4432:
4433: Facilitates the plotting of data in an XY graph.
4434: Puts plot definition data into the users environment in order for
4435: graph.png to plot it. Returns an <img> tag for the plot.
4436:
4437: Inputs:
4438:
4439: =over 4
4440:
4441: =item $Title: string, the title of the plot
4442:
4443: =item $xlabel: string, text describing the X-axis of the plot
4444:
4445: =item $ylabel: string, text describing the Y-axis of the plot
4446:
4447: =item $Max: scalar, the maximum Y value to use in the plot
4448: If $Max is < any data point, the graph will not be rendered.
4449:
4450: =item $colors: Array ref containing the hex color codes for the data to be
4451: plotted in. If undefined, default values will be used.
4452:
4453: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4454:
4455: =item $Ydata: Array ref containing Array refs.
4456: Each of the contained arrays will be plotted as a separate curve.
4457:
4458: =item %Values: hash indicating or overriding any default values which are
4459: passed to graph.png.
4460: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4461:
4462: =back
4463:
4464: Returns:
4465:
4466: An <img> tag which references graph.png and the appropriate identifying
4467: information for the plot.
4468:
4469: =cut
4470:
4471: ############################################################
4472: ############################################################
4473: sub DrawXYGraph {
4474: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
4475: #
4476: # Create the identifier for the graph
4477: my $identifier = &get_cgi_id();
4478: my $id = 'cgi.'.$identifier;
4479: #
4480: $Title = '' if (! defined($Title));
4481: $xlabel = '' if (! defined($xlabel));
4482: $ylabel = '' if (! defined($ylabel));
4483: my %ValuesHash =
4484: (
4485: $id.'.title' => &Apache::lonnet::escape($Title),
4486: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4487: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4488: $id.'.y_max_value'=> $Max,
4489: $id.'.labels' => join(',',@$Xlabels),
4490: $id.'.PlotType' => 'XY',
4491: );
4492: #
4493: if (defined($colors) && ref($colors) eq 'ARRAY') {
4494: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4495: }
4496: #
4497: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
4498: return '';
4499: }
4500: my $NumSets=1;
4501: foreach my $array (@{$Ydata}){
4502: next if (! ref($array));
4503: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4504: }
4505: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
4506: #
4507: # Deal with other parameters
4508: while (my ($key,$value) = each(%Values)) {
4509: $ValuesHash{$id.'.'.$key} = $value;
4510: }
4511: #
4512: &Apache::lonnet::appenv(%ValuesHash);
4513: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4514: }
4515:
4516: ############################################################
4517: ############################################################
4518:
4519: =pod
4520:
4521: =item DrawXYYGraph
4522:
4523: Facilitates the plotting of data in an XY graph with two Y axes.
4524: Puts plot definition data into the users environment in order for
4525: graph.png to plot it. Returns an <img> tag for the plot.
4526:
4527: Inputs:
4528:
4529: =over 4
4530:
4531: =item $Title: string, the title of the plot
4532:
4533: =item $xlabel: string, text describing the X-axis of the plot
4534:
4535: =item $ylabel: string, text describing the Y-axis of the plot
4536:
4537: =item $colors: Array ref containing the hex color codes for the data to be
4538: plotted in. If undefined, default values will be used.
4539:
4540: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4541:
4542: =item $Ydata1: The first data set
4543:
4544: =item $Min1: The minimum value of the left Y-axis
4545:
4546: =item $Max1: The maximum value of the left Y-axis
4547:
4548: =item $Ydata2: The second data set
4549:
4550: =item $Min2: The minimum value of the right Y-axis
4551:
4552: =item $Max2: The maximum value of the left Y-axis
4553:
4554: =item %Values: hash indicating or overriding any default values which are
4555: passed to graph.png.
4556: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4557:
4558: =back
4559:
4560: Returns:
4561:
4562: An <img> tag which references graph.png and the appropriate identifying
4563: information for the plot.
4564:
4565: =cut
4566:
4567: ############################################################
4568: ############################################################
4569: sub DrawXYYGraph {
4570: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4571: $Ydata2,$Min2,$Max2,%Values)=@_;
4572: #
4573: # Create the identifier for the graph
4574: my $identifier = &get_cgi_id();
4575: my $id = 'cgi.'.$identifier;
4576: #
4577: $Title = '' if (! defined($Title));
4578: $xlabel = '' if (! defined($xlabel));
4579: $ylabel = '' if (! defined($ylabel));
4580: my %ValuesHash =
4581: (
4582: $id.'.title' => &Apache::lonnet::escape($Title),
4583: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4584: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4585: $id.'.labels' => join(',',@$Xlabels),
4586: $id.'.PlotType' => 'XY',
4587: $id.'.NumSets' => 2,
4588: $id.'.two_axes' => 1,
4589: $id.'.y1_max_value' => $Max1,
4590: $id.'.y1_min_value' => $Min1,
4591: $id.'.y2_max_value' => $Max2,
4592: $id.'.y2_min_value' => $Min2,
4593: );
4594: #
4595: if (defined($colors) && ref($colors) eq 'ARRAY') {
4596: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4597: }
4598: #
4599: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4600: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
4601: return '';
4602: }
4603: my $NumSets=1;
4604: foreach my $array ($Ydata1,$Ydata2){
4605: next if (! ref($array));
4606: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4607: }
4608: #
4609: # Deal with other parameters
4610: while (my ($key,$value) = each(%Values)) {
4611: $ValuesHash{$id.'.'.$key} = $value;
4612: }
4613: #
4614: &Apache::lonnet::appenv(%ValuesHash);
4615: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4616: }
4617:
4618: ############################################################
4619: ############################################################
4620:
4621: =pod
4622:
4623: =back
4624:
4625: =head1 Statistics helper routines?
4626:
4627: Bad place for them but what the hell.
4628:
4629: =over 4
4630:
4631: =item &chartlink
4632:
4633: Returns a link to the chart for a specific student.
4634:
4635: Inputs:
4636:
4637: =over 4
4638:
4639: =item $linktext: The text of the link
4640:
4641: =item $sname: The students username
4642:
4643: =item $sdomain: The students domain
4644:
4645: =back
4646:
4647: =back
4648:
4649: =cut
4650:
4651: ############################################################
4652: ############################################################
4653: sub chartlink {
4654: my ($linktext, $sname, $sdomain) = @_;
4655: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
4656: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
4657: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
4658: '">'.$linktext.'</a>';
4659: }
4660:
4661: #######################################################
4662: #######################################################
4663:
4664: =pod
4665:
4666: =head1 Course Environment Routines
4667:
4668: =over 4
4669:
4670: =item &restore_course_settings
4671:
4672: =item &store_course_settings
4673:
4674: Restores/Store indicated form parameters from the course environment.
4675: Will not overwrite existing values of the form parameters.
4676:
4677: Inputs:
4678: a scalar describing the data (e.g. 'chart', 'problem_analysis')
4679:
4680: a hash ref describing the data to be stored. For example:
4681:
4682: %Save_Parameters = ('Status' => 'scalar',
4683: 'chartoutputmode' => 'scalar',
4684: 'chartoutputdata' => 'scalar',
4685: 'Section' => 'array',
4686: 'StudentData' => 'array',
4687: 'Maps' => 'array');
4688:
4689: Returns: both routines return nothing
4690:
4691: =cut
4692:
4693: #######################################################
4694: #######################################################
4695: sub store_course_settings {
4696: # save to the environment
4697: # appenv the same items, just to be safe
4698: my $courseid = $env{'request.course.id'};
4699: my $udom = $env{'user.domain'};
4700: my $uname = $env{'user.name'};
4701: my ($prefix,$Settings) = @_;
4702: my %SaveHash;
4703: my %AppHash;
4704: while (my ($setting,$type) = each(%$Settings)) {
4705: my $basename = join('.','internal',$courseid,$prefix,$setting);
4706: my $envname = 'environment.'.$basename;
4707: if (exists($env{'form.'.$setting})) {
4708: # Save this value away
4709: if ($type eq 'scalar' &&
4710: (! exists($env{$envname}) ||
4711: $env{$envname} ne $env{'form.'.$setting})) {
4712: $SaveHash{$basename} = $env{'form.'.$setting};
4713: $AppHash{$envname} = $env{'form.'.$setting};
4714: } elsif ($type eq 'array') {
4715: my $stored_form;
4716: if (ref($env{'form.'.$setting})) {
4717: $stored_form = join(',',
4718: map {
4719: &Apache::lonnet::escape($_);
4720: } sort(@{$env{'form.'.$setting}}));
4721: } else {
4722: $stored_form =
4723: &Apache::lonnet::escape($env{'form.'.$setting});
4724: }
4725: # Determine if the array contents are the same.
4726: if ($stored_form ne $env{$envname}) {
4727: $SaveHash{$basename} = $stored_form;
4728: $AppHash{$envname} = $stored_form;
4729: }
4730: }
4731: }
4732: }
4733: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
4734: $udom,$uname);
4735: if ($put_result !~ /^(ok|delayed)/) {
4736: &Apache::lonnet::logthis('unable to save form parameters, '.
4737: 'got error:'.$put_result);
4738: }
4739: # Make sure these settings stick around in this session, too
4740: &Apache::lonnet::appenv(%AppHash);
4741: return;
4742: }
4743:
4744: sub restore_course_settings {
4745: my $courseid = $env{'request.course.id'};
4746: my ($prefix,$Settings) = @_;
4747: while (my ($setting,$type) = each(%$Settings)) {
4748: next if (exists($env{'form.'.$setting}));
4749: my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
4750: '.'.$setting;
4751: if (exists($env{$envname})) {
4752: if ($type eq 'scalar') {
4753: $env{'form.'.$setting} = $env{$envname};
4754: } elsif ($type eq 'array') {
4755: $env{'form.'.$setting} = [
4756: map {
4757: &Apache::lonnet::unescape($_);
4758: } split(',',$env{$envname})
4759: ];
4760: }
4761: }
4762: }
4763: }
4764:
4765: ############################################################
4766: ############################################################
4767:
4768: sub propath {
4769: my ($udom,$uname)=@_;
4770: $udom=~s/\W//g;
4771: $uname=~s/\W//g;
4772: my $subdir=$uname.'__';
4773: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4774: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4775: return $proname;
4776: }
4777:
4778: sub icon {
4779: my ($file)=@_;
4780: my $curfext = (split(/\./,$file))[-1];
4781: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
4782: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
4783: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4784: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4785: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4786: $curfext.".gif") {
4787: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4788: $curfext.".gif";
4789: }
4790: }
4791: return &lonhttpdurl($iconname);
4792: }
4793:
4794: sub lonhttpdurl {
4795: my ($url)=@_;
4796: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4797: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4798: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4799: }
4800:
4801: sub connection_aborted {
4802: my ($r)=@_;
4803: $r->print(" ");$r->rflush();
4804: my $c = $r->connection;
4805: return $c->aborted();
4806: }
4807:
4808: # Escapes strings that may have embedded 's that will be put into
4809: # strings as 'strings'.
4810: sub escape_single {
4811: my ($input) = @_;
4812: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
4813: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4814: return $input;
4815: }
4816:
4817: # Same as escape_single, but escape's "'s This
4818: # can be used for "strings"
4819: sub escape_double {
4820: my ($input) = @_;
4821: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4822: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4823: return $input;
4824: }
4825:
4826: # Escapes the last element of a full URL.
4827: sub escape_url {
4828: my ($url) = @_;
4829: my @urlslices = split(/\//, $url,-1);
4830: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4831: return join('/',@urlslices).'/'.$lastitem;
4832: }
4833: =pod
4834:
4835: =back
4836:
4837: =cut
4838:
4839: 1;
4840: __END__;
4841:
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