1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.294 2005/11/15 22:03:05 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet;
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::Constants qw(:common :http :methods);
62: use Apache::lonmenu();
63: use Apache::lonlocal;
64: use HTML::Entities;
65:
66: my $readit;
67:
68: ##
69: ## Global Variables
70: ##
71:
72: # ----------------------------------------------- Filetypes/Languages/Copyright
73: my %language;
74: my %supported_language;
75: my %cprtag;
76: my %scprtag;
77: my %fe; my %fd;
78: my %category_extensions;
79:
80: # ---------------------------------------------- Designs
81:
82: my %designhash;
83:
84: # ---------------------------------------------- Thesaurus variables
85: #
86: # %Keywords:
87: # A hash used by &keyword to determine if a word is considered a keyword.
88: # $thesaurus_db_file
89: # Scalar containing the full path to the thesaurus database.
90:
91: my %Keywords;
92: my $thesaurus_db_file;
93:
94: #
95: # Initialize values from language.tab, copyright.tab, filetypes.tab,
96: # thesaurus.tab, and filecategories.tab.
97: #
98: BEGIN {
99: # Variable initialization
100: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
101: #
102: unless ($readit) {
103: # ------------------------------------------------------------------- languages
104: {
105: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
106: '/language.tab';
107: if ( open(my $fh,"<$langtabfile") ) {
108: while (<$fh>) {
109: next if /^\#/;
110: chomp;
111: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
112: $language{$key}=$val.' - '.$enc;
113: if ($sup) {
114: $supported_language{$key}=$sup;
115: }
116: }
117: close($fh);
118: }
119: }
120: # ------------------------------------------------------------------ copyrights
121: {
122: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
123: '/copyright.tab';
124: if ( open (my $fh,"<$copyrightfile") ) {
125: while (<$fh>) {
126: next if /^\#/;
127: chomp;
128: my ($key,$val)=(split(/\s+/,$_,2));
129: $cprtag{$key}=$val;
130: }
131: close($fh);
132: }
133: }
134: # ------------------------------------------------------------------ source copyrights
135: {
136: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
137: '/source_copyright.tab';
138: if ( open (my $fh,"<$sourcecopyrightfile") ) {
139: while (<$fh>) {
140: next if /^\#/;
141: chomp;
142: my ($key,$val)=(split(/\s+/,$_,2));
143: $scprtag{$key}=$val;
144: }
145: close($fh);
146: }
147: }
148:
149: # -------------------------------------------------------------- domain designs
150:
151: my $filename;
152: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
153: opendir(DIR,$designdir);
154: while ($filename=readdir(DIR)) {
155: if ($filename!~/\.tab$/) { next; }
156: my ($domain)=($filename=~/^(\w+)\./);
157: {
158: my $designfile = $designdir.'/'.$filename;
159: if ( open (my $fh,"<$designfile") ) {
160: while (<$fh>) {
161: next if /^\#/;
162: chomp;
163: my ($key,$val)=(split(/\=/,$_));
164: if ($val) { $designhash{$domain.'.'.$key}=$val; }
165: }
166: close($fh);
167: }
168: }
169:
170: }
171: closedir(DIR);
172:
173:
174: # ------------------------------------------------------------- file categories
175: {
176: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
177: '/filecategories.tab';
178: if ( open (my $fh,"<$categoryfile") ) {
179: while (<$fh>) {
180: next if /^\#/;
181: chomp;
182: my ($extension,$category)=(split(/\s+/,$_,2));
183: push @{$category_extensions{lc($category)}},$extension;
184: }
185: close($fh);
186: }
187:
188: }
189: # ------------------------------------------------------------------ file types
190: {
191: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
192: '/filetypes.tab';
193: if ( open (my $fh,"<$typesfile") ) {
194: while (<$fh>) {
195: next if (/^\#/);
196: chomp;
197: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
198: if ($descr ne '') {
199: $fe{$ending}=lc($emb);
200: $fd{$ending}=$descr;
201: }
202: }
203: close($fh);
204: }
205: }
206: &Apache::lonnet::logthis(
207: "<font color=yellow>INFO: Read file types</font>");
208: $readit=1;
209: } # end of unless($readit)
210:
211: }
212:
213: ###############################################################
214: ## HTML and Javascript Helper Functions ##
215: ###############################################################
216:
217: =pod
218:
219: =head1 HTML and Javascript Functions
220:
221: =over 4
222:
223: =item * browser_and_searcher_javascript ()
224:
225: X<browsing, javascript>X<searching, javascript>Returns a string
226: containing javascript with two functions, C<openbrowser> and
227: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
228: tags.
229:
230: =item * openbrowser(formname,elementname,only,omit) [javascript]
231:
232: inputs: formname, elementname, only, omit
233:
234: formname and elementname indicate the name of the html form and name of
235: the element that the results of the browsing selection are to be placed in.
236:
237: Specifying 'only' will restrict the browser to displaying only files
238: with the given extension. Can be a comma separated list.
239:
240: Specifying 'omit' will restrict the browser to NOT displaying files
241: with the given extension. Can be a comma separated list.
242:
243: =item * opensearcher(formname, elementname) [javascript]
244:
245: Inputs: formname, elementname
246:
247: formname and elementname specify the name of the html form and the name
248: of the element the selection from the search results will be placed in.
249:
250: =cut
251:
252: sub browser_and_searcher_javascript {
253: my ($mode)=@_;
254: if (!defined($mode)) { $mode='edit'; }
255: my $resurl=&lastresurl();
256: return <<END;
257: // <!-- BEGIN LON-CAPA Internal
258: var editbrowser = null;
259: function openbrowser(formname,elementname,only,omit,titleelement) {
260: var url = '$resurl/?';
261: if (editbrowser == null) {
262: url += 'launch=1&';
263: }
264: url += 'catalogmode=interactive&';
265: url += 'mode=$mode&';
266: url += 'form=' + formname + '&';
267: if (only != null) {
268: url += 'only=' + only + '&';
269: } else {
270: url += 'only=&';
271: }
272: if (omit != null) {
273: url += 'omit=' + omit + '&';
274: } else {
275: url += 'omit=&';
276: }
277: if (titleelement != null) {
278: url += 'titleelement=' + titleelement + '&';
279: } else {
280: url += 'titleelement=&';
281: }
282: url += 'element=' + elementname + '';
283: var title = 'Browser';
284: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
285: options += ',width=700,height=600';
286: editbrowser = open(url,title,options,'1');
287: editbrowser.focus();
288: }
289: var editsearcher;
290: function opensearcher(formname,elementname,titleelement) {
291: var url = '/adm/searchcat?';
292: if (editsearcher == null) {
293: url += 'launch=1&';
294: }
295: url += 'catalogmode=interactive&';
296: url += 'mode=$mode&';
297: url += 'form=' + formname + '&';
298: if (titleelement != null) {
299: url += 'titleelement=' + titleelement + '&';
300: } else {
301: url += 'titleelement=&';
302: }
303: url += 'element=' + elementname + '';
304: var title = 'Search';
305: var options = 'scrollbars=1,resizable=1,menubar=0';
306: options += ',width=700,height=600';
307: editsearcher = open(url,title,options,'1');
308: editsearcher.focus();
309: }
310: // END LON-CAPA Internal -->
311: END
312: }
313:
314: sub lastresurl {
315: if ($env{'environment.lastresurl'}) {
316: return $env{'environment.lastresurl'}
317: } else {
318: return '/res';
319: }
320: }
321:
322: sub storeresurl {
323: my $resurl=&Apache::lonnet::clutter(shift);
324: unless ($resurl=~/^\/res/) { return 0; }
325: $resurl=~s/\/$//;
326: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
327: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
328: return 1;
329: }
330:
331: sub studentbrowser_javascript {
332: unless (
333: (($env{'request.course.id'}) &&
334: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})))
335: || ($env{'request.role'}=~/^(au|dc|su)/)
336: ) { return ''; }
337: return (<<'ENDSTDBRW');
338: <script type="text/javascript" language="Javascript" >
339: var stdeditbrowser;
340: function openstdbrowser(formname,uname,udom,roleflag) {
341: var url = '/adm/pickstudent?';
342: var filter;
343: eval('filter=document.'+formname+'.'+uname+'.value;');
344: if (filter != null) {
345: if (filter != '') {
346: url += 'filter='+filter+'&';
347: }
348: }
349: url += 'form=' + formname + '&unameelement='+uname+
350: '&udomelement='+udom;
351: if (roleflag) { url+="&roles=1"; }
352: var title = 'Student_Browser';
353: var options = 'scrollbars=1,resizable=1,menubar=0';
354: options += ',width=700,height=600';
355: stdeditbrowser = open(url,title,options,'1');
356: stdeditbrowser.focus();
357: }
358: </script>
359: ENDSTDBRW
360: }
361:
362: sub selectstudent_link {
363: my ($form,$unameele,$udomele)=@_;
364: if ($env{'request.course.id'}) {
365: unless (&Apache::lonnet::allowed('srm',$env{'request.course.id'})) {
366: return '';
367: }
368: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
369: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
370: }
371: if ($env{'request.role'}=~/^(au|dc|su)/) {
372: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
373: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
374: }
375: return '';
376: }
377:
378: sub coursebrowser_javascript {
379: my ($domainfilter)=@_;
380: return (<<ENDSTDBRW);
381: <script type="text/javascript" language="Javascript" >
382: var stdeditbrowser;
383: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
384: var url = '/adm/pickcourse?';
385: var filter;
386: if (filter != null) {
387: if (filter != '') {
388: url += 'filter='+filter+'&';
389: }
390: }
391: var domainfilter='$domainfilter';
392: if (domainfilter != null) {
393: if (domainfilter != '') {
394: url += 'domainfilter='+domainfilter+'&';
395: }
396: }
397: url += 'form=' + formname + '&cnumelement='+uname+
398: '&cdomelement='+udom+
399: '&cnameelement='+desc;
400: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
401: url += '&roleelement='+extra_element;
402: if (domainfilter == null || domainfilter == '') {
403: url += '&domainfilter='+extra_element;
404: }
405: }
406: if (multflag !=null && multflag != '') {
407: url += '&multiple='+multflag;
408: }
409: var title = 'Course_Browser';
410: var options = 'scrollbars=1,resizable=1,menubar=0';
411: options += ',width=700,height=600';
412: stdeditbrowser = open(url,title,options,'1');
413: stdeditbrowser.focus();
414: }
415: </script>
416: ENDSTDBRW
417: }
418:
419: sub selectcourse_link {
420: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
421: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
422: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
423: }
424:
425: sub check_uncheck_jscript {
426: my $jscript = <<"ENDSCRT";
427: function checkAll(field) {
428: if (field.length > 0) {
429: for (i = 0; i < field.length; i++) {
430: field[i].checked = true ;
431: }
432: } else {
433: field.checked = true
434: }
435: }
436:
437: function uncheckAll(field) {
438: if (field.length > 0) {
439: for (i = 0; i < field.length; i++) {
440: field[i].checked = false ;
441: } } else {
442: field.checked = false ;
443: }
444: }
445: ENDSCRT
446: return $jscript;
447: }
448:
449:
450: =pod
451:
452: =item * linked_select_forms(...)
453:
454: linked_select_forms returns a string containing a <script></script> block
455: and html for two <select> menus. The select menus will be linked in that
456: changing the value of the first menu will result in new values being placed
457: in the second menu. The values in the select menu will appear in alphabetical
458: order.
459:
460: linked_select_forms takes the following ordered inputs:
461:
462: =over 4
463:
464: =item * $formname, the name of the <form> tag
465:
466: =item * $middletext, the text which appears between the <select> tags
467:
468: =item * $firstdefault, the default value for the first menu
469:
470: =item * $firstselectname, the name of the first <select> tag
471:
472: =item * $secondselectname, the name of the second <select> tag
473:
474: =item * $hashref, a reference to a hash containing the data for the menus.
475:
476: =back
477:
478: Below is an example of such a hash. Only the 'text', 'default', and
479: 'select2' keys must appear as stated. keys(%menu) are the possible
480: values for the first select menu. The text that coincides with the
481: first menu value is given in $menu{$choice1}->{'text'}. The values
482: and text for the second menu are given in the hash pointed to by
483: $menu{$choice1}->{'select2'}.
484:
485: my %menu = ( A1 => { text =>"Choice A1" ,
486: default => "B3",
487: select2 => {
488: B1 => "Choice B1",
489: B2 => "Choice B2",
490: B3 => "Choice B3",
491: B4 => "Choice B4"
492: }
493: },
494: A2 => { text =>"Choice A2" ,
495: default => "C2",
496: select2 => {
497: C1 => "Choice C1",
498: C2 => "Choice C2",
499: C3 => "Choice C3"
500: }
501: },
502: A3 => { text =>"Choice A3" ,
503: default => "D6",
504: select2 => {
505: D1 => "Choice D1",
506: D2 => "Choice D2",
507: D3 => "Choice D3",
508: D4 => "Choice D4",
509: D5 => "Choice D5",
510: D6 => "Choice D6",
511: D7 => "Choice D7"
512: }
513: }
514: );
515:
516: =cut
517:
518: sub linked_select_forms {
519: my ($formname,
520: $middletext,
521: $firstdefault,
522: $firstselectname,
523: $secondselectname,
524: $hashref
525: ) = @_;
526: my $second = "document.$formname.$secondselectname";
527: my $first = "document.$formname.$firstselectname";
528: # output the javascript to do the changing
529: my $result = '';
530: $result.="<script type=\"text/javascript\">\n";
531: $result.="var select2data = new Object();\n";
532: $" = '","';
533: my $debug = '';
534: foreach my $s1 (sort(keys(%$hashref))) {
535: $result.="select2data.d_$s1 = new Object();\n";
536: $result.="select2data.d_$s1.def = new String('".
537: $hashref->{$s1}->{'default'}."');\n";
538: $result.="select2data.d_$s1.values = new Array(";
539: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
540: $result.="\"@s2values\");\n";
541: $result.="select2data.d_$s1.texts = new Array(";
542: my @s2texts;
543: foreach my $value (@s2values) {
544: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
545: }
546: $result.="\"@s2texts\");\n";
547: }
548: $"=' ';
549: $result.= <<"END";
550:
551: function select1_changed() {
552: // Determine new choice
553: var newvalue = "d_" + $first.value;
554: // update select2
555: var values = select2data[newvalue].values;
556: var texts = select2data[newvalue].texts;
557: var select2def = select2data[newvalue].def;
558: var i;
559: // out with the old
560: for (i = 0; i < $second.options.length; i++) {
561: $second.options[i] = null;
562: }
563: // in with the nuclear
564: for (i=0;i<values.length; i++) {
565: $second.options[i] = new Option(values[i]);
566: $second.options[i].value = values[i];
567: $second.options[i].text = texts[i];
568: if (values[i] == select2def) {
569: $second.options[i].selected = true;
570: }
571: }
572: }
573: </script>
574: END
575: # output the initial values for the selection lists
576: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
577: foreach my $value (sort(keys(%$hashref))) {
578: $result.=" <option value=\"$value\" ";
579: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
580: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
581: }
582: $result .= "</select>\n";
583: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
584: $result .= $middletext;
585: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
586: my $seconddefault = $hashref->{$firstdefault}->{'default'};
587: foreach my $value (sort(keys(%select2))) {
588: $result.=" <option value=\"$value\" ";
589: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
590: $result.=">".&mt($select2{$value})."</option>\n";
591: }
592: $result .= "</select>\n";
593: # return $debug;
594: return $result;
595: } # end of sub linked_select_forms {
596:
597: =pod
598:
599: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
600:
601: Returns a string corresponding to an HTML link to the given help
602: $topic, where $topic corresponds to the name of a .tex file in
603: /home/httpd/html/adm/help/tex, with underscores replaced by
604: spaces.
605:
606: $text will optionally be linked to the same topic, allowing you to
607: link text in addition to the graphic. If you do not want to link
608: text, but wish to specify one of the later parameters, pass an
609: empty string.
610:
611: $stayOnPage is a value that will be interpreted as a boolean. If true,
612: the link will not open a new window. If false, the link will open
613: a new window using Javascript. (Default is false.)
614:
615: $width and $height are optional numerical parameters that will
616: override the width and height of the popped up window, which may
617: be useful for certain help topics with big pictures included.
618:
619: =cut
620:
621: sub help_open_topic {
622: my ($topic, $text, $stayOnPage, $width, $height) = @_;
623: $text = "" if (not defined $text);
624: $stayOnPage = 0 if (not defined $stayOnPage);
625: if ($env{'browser.interface'} eq 'textual' ||
626: $env{'environment.remote'} eq 'off' ) {
627: $stayOnPage=1;
628: }
629: $width = 350 if (not defined $width);
630: $height = 400 if (not defined $height);
631: my $filename = $topic;
632: $filename =~ s/ /_/g;
633:
634: my $template = "";
635: my $link;
636:
637: $topic=~s/\W/\_/g;
638:
639: if (!$stayOnPage)
640: {
641: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
642: }
643: else
644: {
645: $link = "/adm/help/${filename}.hlp";
646: }
647:
648: # Add the text
649: if ($text ne "")
650: {
651: $template .=
652: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
653: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
654: }
655:
656: # Add the graphic
657: my $title = &mt('Online Help');
658: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
659: $template .= <<"ENDTEMPLATE";
660: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
661: ENDTEMPLATE
662: if ($text ne '') { $template.='</td></tr></table>' };
663: return $template;
664:
665: }
666:
667: # This is a quicky function for Latex cheatsheet editing, since it
668: # appears in at least four places
669: sub helpLatexCheatsheet {
670: my $other = shift;
671: my $addOther = '';
672: if ($other) {
673: $addOther = Apache::loncommon::help_open_topic($other, shift,
674: undef, undef, 600) .
675: '</td><td>';
676: }
677: return '<table><tr><td>'.
678: $addOther .
679: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
680: undef,undef,600)
681: .'</td><td>'.
682: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
683: undef,undef,600)
684: .'</td></tr></table>';
685: }
686:
687: sub help_open_menu {
688: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
689: $text = "" if (not defined $text);
690: $stayOnPage = 0 if (not defined $stayOnPage);
691: if ($env{'browser.interface'} eq 'textual' ||
692: $env{'environment.remote'} eq 'off' ) {
693: $stayOnPage=1;
694: }
695: $width = 620 if (not defined $width);
696: $height = 600 if (not defined $height);
697: my $link='';
698: my $title = &mt('Get help');
699: my $origurl = $ENV{'REQUEST_URI'};
700: $origurl=~s|^/~|/priv/|;
701: my $timestamp = time;
702: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
703: $$_ = &Apache::lonnet::escape($$_);
704: }
705: if (!$stayOnPage) {
706: $link = "javascript:helpMenu('open')";
707: } else {
708: $link = "javascript:helpMenu('display')";
709: }
710: 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";
711: 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";
712: my $template;
713: if ($text ne "") {
714: $template .=
715: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
716: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
717: }
718: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
719: my $html=&Apache::lonxml::xmlbegin();
720: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
721: $template .= <<"ENDTEMPLATE";
722: <script type="text/javascript">
723: // <!-- BEGIN LON-CAPA Internal
724: // <![CDATA[
725: function helpMenu(target) {
726: var caller = this;
727: if (target == 'open') {
728: var newWindow = null;
729: try {
730: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
731: }
732: catch(error) {
733: writeHelp(caller);
734: return;
735: }
736: if (newWindow) {
737: caller = newWindow;
738: }
739: }
740: writeHelp(caller);
741: return;
742: }
743: function writeHelp(caller) {
744: caller.document.writeln('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
745: caller.document.writeln("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
746: caller.document.writeln("</html>")
747: caller.document.close()
748: caller.focus()
749: }
750: // ]]>
751: // END LON-CAPA Internal -->
752: </script>
753: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
754: ENDTEMPLATE
755: if ($component_help) {
756: if (!$text) {
757: $template=&help_open_topic($component_help,undef,$stayOnPage,
758: $width,$height).' '.$template;
759: } else {
760: my $help_text;
761: $help_text=&Apache::lonnet::unescape($topic);
762: $template='<table><tr><td>'.
763: &help_open_topic($component_help,$help_text,$stayOnPage,
764: $width,$height).'</td><td>'.$template.
765: '</td></tr></table>';
766: }
767: }
768: if ($text ne '') { $template.='</td></tr></table>' };
769: return $template;
770: }
771:
772: sub help_open_bug {
773: my ($topic, $text, $stayOnPage, $width, $height) = @_;
774: unless ($env{'user.adv'}) { return ''; }
775: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
776: $text = "" if (not defined $text);
777: $stayOnPage = 0 if (not defined $stayOnPage);
778: if ($env{'browser.interface'} eq 'textual' ||
779: $env{'environment.remote'} eq 'off' ) {
780: $stayOnPage=1;
781: }
782: $width = 600 if (not defined $width);
783: $height = 600 if (not defined $height);
784:
785: $topic=~s/\W+/\+/g;
786: my $link='';
787: my $template='';
788: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
789: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
790: if (!$stayOnPage)
791: {
792: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
793: }
794: else
795: {
796: $link = $url;
797: }
798: # Add the text
799: if ($text ne "")
800: {
801: $template .=
802: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
803: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
804: }
805:
806: # Add the graphic
807: my $title = &mt('Report a Bug');
808: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
809: $template .= <<"ENDTEMPLATE";
810: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
811: ENDTEMPLATE
812: if ($text ne '') { $template.='</td></tr></table>' };
813: return $template;
814:
815: }
816:
817: sub help_open_faq {
818: my ($topic, $text, $stayOnPage, $width, $height) = @_;
819: unless ($env{'user.adv'}) { return ''; }
820: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
821: $text = "" if (not defined $text);
822: $stayOnPage = 0 if (not defined $stayOnPage);
823: if ($env{'browser.interface'} eq 'textual' ||
824: $env{'environment.remote'} eq 'off' ) {
825: $stayOnPage=1;
826: }
827: $width = 350 if (not defined $width);
828: $height = 400 if (not defined $height);
829:
830: $topic=~s/\W+/\+/g;
831: my $link='';
832: my $template='';
833: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
834: if (!$stayOnPage)
835: {
836: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
837: }
838: else
839: {
840: $link = $url;
841: }
842:
843: # Add the text
844: if ($text ne "")
845: {
846: $template .=
847: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
848: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
849: }
850:
851: # Add the graphic
852: my $title = &mt('View the FAQ');
853: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
854: $template .= <<"ENDTEMPLATE";
855: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
856: ENDTEMPLATE
857: if ($text ne '') { $template.='</td></tr></table>' };
858: return $template;
859:
860: }
861:
862: ###############################################################
863: ###############################################################
864:
865: =pod
866:
867: =item * change_content_javascript():
868:
869: This and the next function allow you to create small sections of an
870: otherwise static HTML page that you can update on the fly with
871: Javascript, even in Netscape 4.
872:
873: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
874: must be written to the HTML page once. It will prove the Javascript
875: function "change(name, content)". Calling the change function with the
876: name of the section
877: you want to update, matching the name passed to C<changable_area>, and
878: the new content you want to put in there, will put the content into
879: that area.
880:
881: B<Note>: Netscape 4 only reserves enough space for the changable area
882: to contain room for the original contents. You need to "make space"
883: for whatever changes you wish to make, and be B<sure> to check your
884: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
885: it's adequate for updating a one-line status display, but little more.
886: This script will set the space to 100% width, so you only need to
887: worry about height in Netscape 4.
888:
889: Modern browsers are much less limiting, and if you can commit to the
890: user not using Netscape 4, this feature may be used freely with
891: pretty much any HTML.
892:
893: =cut
894:
895: sub change_content_javascript {
896: # If we're on Netscape 4, we need to use Layer-based code
897: if ($env{'browser.type'} eq 'netscape' &&
898: $env{'browser.version'} =~ /^4\./) {
899: return (<<NETSCAPE4);
900: function change(name, content) {
901: doc = document.layers[name+"___escape"].layers[0].document;
902: doc.open();
903: doc.write(content);
904: doc.close();
905: }
906: NETSCAPE4
907: } else {
908: # Otherwise, we need to use semi-standards-compliant code
909: # (technically, "innerHTML" isn't standard but the equivalent
910: # is really scary, and every useful browser supports it
911: return (<<DOMBASED);
912: function change(name, content) {
913: element = document.getElementById(name);
914: element.innerHTML = content;
915: }
916: DOMBASED
917: }
918: }
919:
920: =pod
921:
922: =item * changable_area($name, $origContent):
923:
924: This provides a "changable area" that can be modified on the fly via
925: the Javascript code provided in C<change_content_javascript>. $name is
926: the name you will use to reference the area later; do not repeat the
927: same name on a given HTML page more then once. $origContent is what
928: the area will originally contain, which can be left blank.
929:
930: =cut
931:
932: sub changable_area {
933: my ($name, $origContent) = @_;
934:
935: if ($env{'browser.type'} eq 'netscape' &&
936: $env{'browser.version'} =~ /^4\./) {
937: # If this is netscape 4, we need to use the Layer tag
938: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
939: } else {
940: return "<span id='$name'>$origContent</span>";
941: }
942: }
943:
944: =pod
945:
946: =back
947:
948: =head1 Excel and CSV file utility routines
949:
950: =over 4
951:
952: =cut
953:
954: ###############################################################
955: ###############################################################
956:
957: =pod
958:
959: =item * csv_translate($text)
960:
961: Translate $text to allow it to be output as a 'comma separated values'
962: format.
963:
964: =cut
965:
966: ###############################################################
967: ###############################################################
968: sub csv_translate {
969: my $text = shift;
970: $text =~ s/\"/\"\"/g;
971: $text =~ s/\n/ /g;
972: return $text;
973: }
974:
975: ###############################################################
976: ###############################################################
977:
978: =pod
979:
980: =item * define_excel_formats
981:
982: Define some commonly used Excel cell formats.
983:
984: Currently supported formats:
985:
986: =over 4
987:
988: =item header
989:
990: =item bold
991:
992: =item h1
993:
994: =item h2
995:
996: =item h3
997:
998: =item h4
999:
1000: =item i
1001:
1002: =item date
1003:
1004: =back
1005:
1006: Inputs: $workbook
1007:
1008: Returns: $format, a hash reference.
1009:
1010: =cut
1011:
1012: ###############################################################
1013: ###############################################################
1014: sub define_excel_formats {
1015: my ($workbook) = @_;
1016: my $format;
1017: $format->{'header'} = $workbook->add_format(bold => 1,
1018: bottom => 1,
1019: align => 'center');
1020: $format->{'bold'} = $workbook->add_format(bold=>1);
1021: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1022: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1023: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1024: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1025: $format->{'i'} = $workbook->add_format(italic=>1);
1026: $format->{'date'} = $workbook->add_format(num_format=>
1027: 'mm/dd/yyyy hh:mm:ss');
1028: return $format;
1029: }
1030:
1031: ###############################################################
1032: ###############################################################
1033:
1034: =pod
1035:
1036: =item * create_workbook
1037:
1038: Create an Excel worksheet. If it fails, output message on the
1039: request object and return undefs.
1040:
1041: Inputs: Apache request object
1042:
1043: Returns (undef) on failure,
1044: Excel worksheet object, scalar with filename, and formats
1045: from &Apache::loncommon::define_excel_formats on success
1046:
1047: =cut
1048:
1049: ###############################################################
1050: ###############################################################
1051: sub create_workbook {
1052: my ($r) = @_;
1053: #
1054: # Create the excel spreadsheet
1055: my $filename = '/prtspool/'.
1056: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1057: time.'_'.rand(1000000000).'.xls';
1058: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1059: if (! defined($workbook)) {
1060: $r->log_error("Error creating excel spreadsheet $filename: $!");
1061: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1062: "This error has been logged. ".
1063: "Please alert your LON-CAPA administrator").
1064: '</p>');
1065: return (undef);
1066: }
1067: #
1068: $workbook->set_tempdir('/home/httpd/perl/tmp');
1069: #
1070: my $format = &Apache::loncommon::define_excel_formats($workbook);
1071: return ($workbook,$filename,$format);
1072: }
1073:
1074: ###############################################################
1075: ###############################################################
1076:
1077: =pod
1078:
1079: =item * create_text_file
1080:
1081: Create a file to write to and eventually make available to the usre.
1082: If file creation fails, outputs an error message on the request object and
1083: return undefs.
1084:
1085: Inputs: Apache request object, and file suffix
1086:
1087: Returns (undef) on failure,
1088: Filehandle and filename on success.
1089:
1090: =cut
1091:
1092: ###############################################################
1093: ###############################################################
1094: sub create_text_file {
1095: my ($r,$suffix) = @_;
1096: if (! defined($suffix)) { $suffix = 'txt'; };
1097: my $fh;
1098: my $filename = '/prtspool/'.
1099: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1100: time.'_'.rand(1000000000).'.'.$suffix;
1101: $fh = Apache::File->new('>/home/httpd'.$filename);
1102: if (! defined($fh)) {
1103: $r->log_error("Couldn't open $filename for output $!");
1104: $r->print("Problems occured in creating the output file. ".
1105: "This error has been logged. ".
1106: "Please alert your LON-CAPA administrator.");
1107: }
1108: return ($fh,$filename)
1109: }
1110:
1111:
1112: =pod
1113:
1114: =back
1115:
1116: =cut
1117:
1118: ###############################################################
1119: ## Home server <option> list generating code ##
1120: ###############################################################
1121:
1122: =pod
1123:
1124: =head1 Home Server option list generating code
1125:
1126: =over 4
1127:
1128: =item * get_domains()
1129:
1130: Returns an array containing each of the domains listed in the hosts.tab
1131: file.
1132:
1133: =cut
1134:
1135: #-------------------------------------------
1136: sub get_domains {
1137: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1138: my @domains;
1139: my %seen;
1140: foreach (sort values(%Apache::lonnet::hostdom)) {
1141: push (@domains,$_) unless $seen{$_}++;
1142: }
1143: return @domains;
1144: }
1145:
1146: # ------------------------------------------
1147:
1148: sub domain_select {
1149: my ($name,$value,$multiple)=@_;
1150: my %domains=map {
1151: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1152: } &get_domains;
1153: if ($multiple) {
1154: $domains{''}=&mt('Any domain');
1155: return &multiple_select_form($name,$value,4,\%domains);
1156: } else {
1157: return &select_form($name,$value,%domains);
1158: }
1159: }
1160:
1161: #-------------------------------------------
1162:
1163: =pod
1164:
1165: =item * multiple_select_form($name,$value,$size,$hash,$order)
1166:
1167: Returns a string containing a <select> element int multiple mode
1168:
1169:
1170: Args:
1171: $name - name of the <select> element
1172: $value - sclara or array ref of values that should already be selected
1173: $size - number of rows long the select element is
1174: $hash - the elements should be 'option' => 'shown text'
1175: (shown text should already have been &mt())
1176: $order - (optional) array ref of the order to show the elments in
1177:
1178: =cut
1179:
1180: #-------------------------------------------
1181: sub multiple_select_form {
1182: my ($name,$value,$size,$hash,$order)=@_;
1183: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1184: my $output='';
1185: if (! defined($size)) {
1186: $size = 4;
1187: if (scalar(keys(%$hash))<4) {
1188: $size = scalar(keys(%$hash));
1189: }
1190: }
1191: $output.="\n<select name='$name' size='$size' multiple='1'>";
1192: my @order = ref($order) ? @$order
1193: : sort(keys(%$hash));
1194: foreach my $key (@order) {
1195: $output.='<option value="'.$key.'" ';
1196: $output.='selected="selected" ' if ($selected{$key});
1197: $output.='>'.$hash->{$key}."</option>\n";
1198: }
1199: $output.="</select>\n";
1200: return $output;
1201: }
1202:
1203: #-------------------------------------------
1204:
1205: =pod
1206:
1207: =item * select_form($defdom,$name,%hash)
1208:
1209: Returns a string containing a <select name='$name' size='1'> form to
1210: allow a user to select options from a hash option_name => displayed text.
1211: See lonrights.pm for an example invocation and use.
1212:
1213: =cut
1214:
1215: #-------------------------------------------
1216: sub select_form {
1217: my ($def,$name,%hash) = @_;
1218: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1219: my @keys;
1220: if (exists($hash{'select_form_order'})) {
1221: @keys=@{$hash{'select_form_order'}};
1222: } else {
1223: @keys=sort(keys(%hash));
1224: }
1225: foreach (@keys) {
1226: $selectform.="<option value=\"$_\" ".
1227: ($_ eq $def ? 'selected="selected" ' : '').
1228: ">".&mt($hash{$_})."</option>\n";
1229: }
1230: $selectform.="</select>";
1231: return $selectform;
1232: }
1233:
1234: sub gradeleveldescription {
1235: my $gradelevel=shift;
1236: my %gradelevels=(0 => 'Not specified',
1237: 1 => 'Grade 1',
1238: 2 => 'Grade 2',
1239: 3 => 'Grade 3',
1240: 4 => 'Grade 4',
1241: 5 => 'Grade 5',
1242: 6 => 'Grade 6',
1243: 7 => 'Grade 7',
1244: 8 => 'Grade 8',
1245: 9 => 'Grade 9',
1246: 10 => 'Grade 10',
1247: 11 => 'Grade 11',
1248: 12 => 'Grade 12',
1249: 13 => 'Grade 13',
1250: 14 => '100 Level',
1251: 15 => '200 Level',
1252: 16 => '300 Level',
1253: 17 => '400 Level',
1254: 18 => 'Graduate Level');
1255: return &mt($gradelevels{$gradelevel});
1256: }
1257:
1258: sub select_level_form {
1259: my ($deflevel,$name)=@_;
1260: unless ($deflevel) { $deflevel=0; }
1261: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1262: for (my $i=0; $i<=18; $i++) {
1263: $selectform.="<option value=\"$i\" ".
1264: ($i==$deflevel ? 'selected="selected" ' : '').
1265: ">".&gradeleveldescription($i)."</option>\n";
1266: }
1267: $selectform.="</select>";
1268: return $selectform;
1269: }
1270:
1271: #-------------------------------------------
1272:
1273: =pod
1274:
1275: =item * select_dom_form($defdom,$name,$includeempty)
1276:
1277: Returns a string containing a <select name='$name' size='1'> form to
1278: allow a user to select the domain to preform an operation in.
1279: See loncreateuser.pm for an example invocation and use.
1280:
1281: If the $includeempty flag is set, it also includes an empty choice ("no domain
1282: selected");
1283:
1284: =cut
1285:
1286: #-------------------------------------------
1287: sub select_dom_form {
1288: my ($defdom,$name,$includeempty) = @_;
1289: my @domains = get_domains();
1290: if ($includeempty) { @domains=('',@domains); }
1291: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1292: foreach (@domains) {
1293: $selectdomain.="<option value=\"$_\" ".
1294: ($_ eq $defdom ? 'selected="selected" ' : '').
1295: ">$_</option>\n";
1296: }
1297: $selectdomain.="</select>";
1298: return $selectdomain;
1299: }
1300:
1301: #-------------------------------------------
1302:
1303: =pod
1304:
1305: =item * get_library_servers($domain)
1306:
1307: Returns a hash which contains keys like '103l3' and values like
1308: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1309: given $domain.
1310:
1311: =cut
1312:
1313: #-------------------------------------------
1314: sub get_library_servers {
1315: my $domain = shift;
1316: my %library_servers;
1317: foreach (keys(%Apache::lonnet::libserv)) {
1318: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1319: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1320: }
1321: }
1322: return %library_servers;
1323: }
1324:
1325: #-------------------------------------------
1326:
1327: =pod
1328:
1329: =item * home_server_option_list($domain)
1330:
1331: returns a string which contains an <option> list to be used in a
1332: <select> form input. See loncreateuser.pm for an example.
1333:
1334: =cut
1335:
1336: #-------------------------------------------
1337: sub home_server_option_list {
1338: my $domain = shift;
1339: my %servers = &get_library_servers($domain);
1340: my $result = '';
1341: foreach (sort keys(%servers)) {
1342: $result.=
1343: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1344: }
1345: return $result;
1346: }
1347:
1348: =pod
1349:
1350: =back
1351:
1352: =cut
1353:
1354: ###############################################################
1355: ## Decoding User Agent ##
1356: ###############################################################
1357:
1358: =pod
1359:
1360: =head1 Decoding the User Agent
1361:
1362: =over 4
1363:
1364: =item * &decode_user_agent()
1365:
1366: Inputs: $r
1367:
1368: Outputs:
1369:
1370: =over 4
1371:
1372: =item * $httpbrowser
1373:
1374: =item * $clientbrowser
1375:
1376: =item * $clientversion
1377:
1378: =item * $clientmathml
1379:
1380: =item * $clientunicode
1381:
1382: =item * $clientos
1383:
1384: =back
1385:
1386: =back
1387:
1388: =cut
1389:
1390: ###############################################################
1391: ###############################################################
1392: sub decode_user_agent {
1393: my ($r)=@_;
1394: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1395: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1396: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1397: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1398: my $clientbrowser='unknown';
1399: my $clientversion='0';
1400: my $clientmathml='';
1401: my $clientunicode='0';
1402: for (my $i=0;$i<=$#browsertype;$i++) {
1403: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1404: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1405: $clientbrowser=$bname;
1406: $httpbrowser=~/$vreg/i;
1407: $clientversion=$1;
1408: $clientmathml=($clientversion>=$minv);
1409: $clientunicode=($clientversion>=$univ);
1410: }
1411: }
1412: my $clientos='unknown';
1413: if (($httpbrowser=~/linux/i) ||
1414: ($httpbrowser=~/unix/i) ||
1415: ($httpbrowser=~/ux/i) ||
1416: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1417: if (($httpbrowser=~/vax/i) ||
1418: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1419: if ($httpbrowser=~/next/i) { $clientos='next'; }
1420: if (($httpbrowser=~/mac/i) ||
1421: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1422: if ($httpbrowser=~/win/i) { $clientos='win'; }
1423: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1424: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1425: $clientunicode,$clientos,);
1426: }
1427:
1428: ###############################################################
1429: ## Authentication changing form generation subroutines ##
1430: ###############################################################
1431: ##
1432: ## All of the authform_xxxxxxx subroutines take their inputs in a
1433: ## hash, and have reasonable default values.
1434: ##
1435: ## formname = the name given in the <form> tag.
1436: #-------------------------------------------
1437:
1438: =pod
1439:
1440: =head1 Authentication Routines
1441:
1442: =over 4
1443:
1444: =item * authform_xxxxxx
1445:
1446: The authform_xxxxxx subroutines provide javascript and html forms which
1447: handle some of the conveniences required for authentication forms.
1448: This is not an optimal method, but it works.
1449:
1450: See loncreateuser.pm for invocation and use examples.
1451:
1452: =over 4
1453:
1454: =item * authform_header
1455:
1456: =item * authform_authorwarning
1457:
1458: =item * authform_nochange
1459:
1460: =item * authform_kerberos
1461:
1462: =item * authform_internal
1463:
1464: =item * authform_filesystem
1465:
1466: =back
1467:
1468: =back
1469:
1470: =cut
1471:
1472: #-------------------------------------------
1473: sub authform_header{
1474: my %in = (
1475: formname => 'cu',
1476: kerb_def_dom => '',
1477: @_,
1478: );
1479: $in{'formname'} = 'document.' . $in{'formname'};
1480: my $result='';
1481:
1482: #---------------------------------------------- Code for upper case translation
1483: my $Javascript_toUpperCase;
1484: unless ($in{kerb_def_dom}) {
1485: $Javascript_toUpperCase =<<"END";
1486: switch (choice) {
1487: case 'krb': currentform.elements[choicearg].value =
1488: currentform.elements[choicearg].value.toUpperCase();
1489: break;
1490: default:
1491: }
1492: END
1493: } else {
1494: $Javascript_toUpperCase = "";
1495: }
1496:
1497: my $radioval = "'nochange'";
1498: if (exists($in{'curr_authtype'}) &&
1499: defined($in{'curr_authtype'}) &&
1500: $in{'curr_authtype'} ne '') {
1501: $radioval = "'$in{'curr_authtype'}arg'";
1502: }
1503: my $argfield = 'null';
1504: if ( grep/^mode$/,(keys %in) ) {
1505: if ($in{'mode'} eq 'modifycourse') {
1506: if ( grep/^curr_authtype$/,(keys %in) ) {
1507: $radioval = "'$in{'curr_authtype'}'";
1508: }
1509: if ( grep/^curr_autharg$/,(keys %in) ) {
1510: unless ($in{'curr_autharg'} eq '') {
1511: $argfield = "'$in{'curr_autharg'}'";
1512: }
1513: }
1514: }
1515: }
1516:
1517: $result.=<<"END";
1518: var current = new Object();
1519: current.radiovalue = $radioval;
1520: current.argfield = $argfield;
1521:
1522: function changed_radio(choice,currentform) {
1523: var choicearg = choice + 'arg';
1524: // If a radio button in changed, we need to change the argfield
1525: if (current.radiovalue != choice) {
1526: current.radiovalue = choice;
1527: if (current.argfield != null) {
1528: currentform.elements[current.argfield].value = '';
1529: }
1530: if (choice == 'nochange') {
1531: current.argfield = null;
1532: } else {
1533: current.argfield = choicearg;
1534: switch(choice) {
1535: case 'krb':
1536: currentform.elements[current.argfield].value =
1537: "$in{'kerb_def_dom'}";
1538: break;
1539: default:
1540: break;
1541: }
1542: }
1543: }
1544: return;
1545: }
1546:
1547: function changed_text(choice,currentform) {
1548: var choicearg = choice + 'arg';
1549: if (currentform.elements[choicearg].value !='') {
1550: $Javascript_toUpperCase
1551: // clear old field
1552: if ((current.argfield != choicearg) && (current.argfield != null)) {
1553: currentform.elements[current.argfield].value = '';
1554: }
1555: current.argfield = choicearg;
1556: }
1557: set_auth_radio_buttons(choice,currentform);
1558: return;
1559: }
1560:
1561: function set_auth_radio_buttons(newvalue,currentform) {
1562: var i=0;
1563: while (i < currentform.login.length) {
1564: if (currentform.login[i].value == newvalue) { break; }
1565: i++;
1566: }
1567: if (i == currentform.login.length) {
1568: return;
1569: }
1570: current.radiovalue = newvalue;
1571: currentform.login[i].checked = true;
1572: return;
1573: }
1574: END
1575: return $result;
1576: }
1577:
1578: sub authform_authorwarning{
1579: my $result='';
1580: $result='<i>'.
1581: &mt('As a general rule, only authors or co-authors should be '.
1582: 'filesystem authenticated '.
1583: '(which allows access to the server filesystem).')."</i>\n";
1584: return $result;
1585: }
1586:
1587: sub authform_nochange{
1588: my %in = (
1589: formname => 'document.cu',
1590: kerb_def_dom => 'MSU.EDU',
1591: @_,
1592: );
1593: my $result = '<label>'.&mt('[_1] Do not change login data',
1594: '<input type="radio" name="login" value="nochange" '.
1595: 'checked="checked" onclick="'.
1596: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1597: '</label>';
1598: return $result;
1599: }
1600:
1601: sub authform_kerberos{
1602: my %in = (
1603: formname => 'document.cu',
1604: kerb_def_dom => 'MSU.EDU',
1605: kerb_def_auth => 'krb4',
1606: @_,
1607: );
1608: my ($check4,$check5,$krbarg);
1609: if ($in{'kerb_def_auth'} eq 'krb5') {
1610: $check5 = " checked=\"on\"";
1611: } else {
1612: $check4 = " checked=\"on\"";
1613: }
1614: $krbarg = $in{'kerb_def_dom'};
1615:
1616: my $krbcheck = "";
1617: if ( grep/^curr_authtype$/,(keys %in) ) {
1618: if ($in{'curr_authtype'} =~ m/^krb/) {
1619: $krbcheck = " checked=\"on\"";
1620: if ( grep/^curr_autharg$/,(keys %in) ) {
1621: $krbarg = $in{'curr_autharg'};
1622: }
1623: }
1624: }
1625:
1626: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1627: my $result .= &mt
1628: ('[_1] Kerberos authenticated with domain [_2] '.
1629: '[_3] Version 4 [_4] Version 5 [_5]',
1630: '<label><input type="radio" name="login" value="krb" '.
1631: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1632: '</label><input type="text" size="10" name="krbarg" '.
1633: 'value="'.$krbarg.'" '.
1634: 'onchange="'.$jscall.'" />',
1635: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1636: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1637: '</label>');
1638: return $result;
1639: }
1640:
1641: sub authform_internal{
1642: my %args = (
1643: formname => 'document.cu',
1644: kerb_def_dom => 'MSU.EDU',
1645: @_,
1646: );
1647:
1648: my $intcheck = "";
1649: my $intarg = 'value=""';
1650: if ( grep/^curr_authtype$/,(keys %args) ) {
1651: if ($args{'curr_authtype'} eq 'int') {
1652: $intcheck = " checked=\"on\"";
1653: if ( grep/^curr_autharg$/,(keys %args) ) {
1654: $intarg = "value=\"$args{'curr_autharg'}\"";
1655: }
1656: }
1657: }
1658:
1659: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1660: my $result.=&mt
1661: ('[_1] Internally authenticated (with initial password [_2])',
1662: '<label><input type="radio" name="login" value="int" '.$intcheck.
1663: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1664: '</label><input type="text" size="10" name="intarg" '.$intarg.
1665: ' onchange="'.$jscall.'" />');
1666: return $result;
1667: }
1668:
1669: sub authform_local{
1670: my %in = (
1671: formname => 'document.cu',
1672: kerb_def_dom => 'MSU.EDU',
1673: @_,
1674: );
1675:
1676: my $loccheck = "";
1677: my $locarg = 'value=""';
1678: if ( grep/^curr_authtype$/,(keys %in) ) {
1679: if ($in{'curr_authtype'} eq 'loc') {
1680: $loccheck = " checked=\"on\"";
1681: if ( grep/^curr_autharg$/,(keys %in) ) {
1682: $locarg = "value=\"$in{'curr_autharg'}\"";
1683: }
1684: }
1685: }
1686:
1687: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1688: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1689: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1690: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1691: '</label><input type="text" size="10" name="locarg" '.$locarg.
1692: ' onchange="'.$jscall.'" />');
1693: return $result;
1694: }
1695:
1696: sub authform_filesystem{
1697: my %in = (
1698: formname => 'document.cu',
1699: kerb_def_dom => 'MSU.EDU',
1700: @_,
1701: );
1702: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1703: my $result.= &mt
1704: ('[_1] Filesystem Authenticated (with initial password [_2])',
1705: '<label><input type="radio" name="login" value="fsys" '.
1706: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1707: '</label><input type="text" size="10" name="fsysarg" value="" '.
1708: 'onchange="'.$jscall.'" />');
1709: return $result;
1710: }
1711:
1712: ###############################################################
1713: ## Get Authentication Defaults for Domain ##
1714: ###############################################################
1715:
1716: =pod
1717:
1718: =head1 Domains and Authentication
1719:
1720: Returns default authentication type and an associated argument as
1721: listed in file 'domain.tab'.
1722:
1723: =over 4
1724:
1725: =item * get_auth_defaults
1726:
1727: get_auth_defaults($target_domain) returns the default authentication
1728: type and an associated argument (initial password or a kerberos domain).
1729: These values are stored in lonTabs/domain.tab
1730:
1731: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1732:
1733: If target_domain is not found in domain.tab, returns nothing ('').
1734:
1735: =cut
1736:
1737: #-------------------------------------------
1738: sub get_auth_defaults {
1739: my $domain=shift;
1740: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1741: }
1742: ###############################################################
1743: ## End Get Authentication Defaults for Domain ##
1744: ###############################################################
1745:
1746: ###############################################################
1747: ## Get Kerberos Defaults for Domain ##
1748: ###############################################################
1749: ##
1750: ## Returns default kerberos version and an associated argument
1751: ## as listed in file domain.tab. If not listed, provides
1752: ## appropriate default domain and kerberos version.
1753: ##
1754: #-------------------------------------------
1755:
1756: =pod
1757:
1758: =item * get_kerberos_defaults
1759:
1760: get_kerberos_defaults($target_domain) returns the default kerberos
1761: version and domain. If not found in domain.tabs, it defaults to
1762: version 4 and the domain of the server.
1763:
1764: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1765:
1766: =cut
1767:
1768: #-------------------------------------------
1769: sub get_kerberos_defaults {
1770: my $domain=shift;
1771: my ($krbdef,$krbdefdom) =
1772: &Apache::loncommon::get_auth_defaults($domain);
1773: unless ($krbdef =~/^krb/ && $krbdefdom) {
1774: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1775: my $krbdefdom=$1;
1776: $krbdefdom=~tr/a-z/A-Z/;
1777: $krbdef = "krb4";
1778: }
1779: return ($krbdef,$krbdefdom);
1780: }
1781:
1782: =pod
1783:
1784: =back
1785:
1786: =cut
1787:
1788: ###############################################################
1789: ## Thesaurus Functions ##
1790: ###############################################################
1791:
1792: =pod
1793:
1794: =head1 Thesaurus Functions
1795:
1796: =over 4
1797:
1798: =item * initialize_keywords
1799:
1800: Initializes the package variable %Keywords if it is empty. Uses the
1801: package variable $thesaurus_db_file.
1802:
1803: =cut
1804:
1805: ###################################################
1806:
1807: sub initialize_keywords {
1808: return 1 if (scalar keys(%Keywords));
1809: # If we are here, %Keywords is empty, so fill it up
1810: # Make sure the file we need exists...
1811: if (! -e $thesaurus_db_file) {
1812: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1813: " failed because it does not exist");
1814: return 0;
1815: }
1816: # Set up the hash as a database
1817: my %thesaurus_db;
1818: if (! tie(%thesaurus_db,'GDBM_File',
1819: $thesaurus_db_file,&GDBM_READER(),0640)){
1820: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1821: $thesaurus_db_file);
1822: return 0;
1823: }
1824: # Get the average number of appearances of a word.
1825: my $avecount = $thesaurus_db{'average.count'};
1826: # Put keywords (those that appear > average) into %Keywords
1827: while (my ($word,$data)=each (%thesaurus_db)) {
1828: my ($count,undef) = split /:/,$data;
1829: $Keywords{$word}++ if ($count > $avecount);
1830: }
1831: untie %thesaurus_db;
1832: # Remove special values from %Keywords.
1833: foreach ('total.count','average.count') {
1834: delete($Keywords{$_}) if (exists($Keywords{$_}));
1835: }
1836: return 1;
1837: }
1838:
1839: ###################################################
1840:
1841: =pod
1842:
1843: =item * keyword($word)
1844:
1845: Returns true if $word is a keyword. A keyword is a word that appears more
1846: than the average number of times in the thesaurus database. Calls
1847: &initialize_keywords
1848:
1849: =cut
1850:
1851: ###################################################
1852:
1853: sub keyword {
1854: return if (!&initialize_keywords());
1855: my $word=lc(shift());
1856: $word=~s/\W//g;
1857: return exists($Keywords{$word});
1858: }
1859:
1860: ###############################################################
1861:
1862: =pod
1863:
1864: =item * get_related_words
1865:
1866: Look up a word in the thesaurus. Takes a scalar argument and returns
1867: an array of words. If the keyword is not in the thesaurus, an empty array
1868: will be returned. The order of the words returned is determined by the
1869: database which holds them.
1870:
1871: Uses global $thesaurus_db_file.
1872:
1873: =cut
1874:
1875: ###############################################################
1876: sub get_related_words {
1877: my $keyword = shift;
1878: my %thesaurus_db;
1879: if (! -e $thesaurus_db_file) {
1880: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1881: "failed because the file does not exist");
1882: return ();
1883: }
1884: if (! tie(%thesaurus_db,'GDBM_File',
1885: $thesaurus_db_file,&GDBM_READER(),0640)){
1886: return ();
1887: }
1888: my @Words=();
1889: if (exists($thesaurus_db{$keyword})) {
1890: $_ = $thesaurus_db{$keyword};
1891: (undef,@Words) = split/:/; # The first element is the number of times
1892: # the word appears. We do not need it now.
1893: for (my $i=0;$i<=$#Words;$i++) {
1894: ($Words[$i],undef)= split/\,/,$Words[$i];
1895: }
1896: }
1897: untie %thesaurus_db;
1898: return @Words;
1899: }
1900:
1901: =pod
1902:
1903: =back
1904:
1905: =cut
1906:
1907: # -------------------------------------------------------------- Plaintext name
1908: =pod
1909:
1910: =head1 User Name Functions
1911:
1912: =over 4
1913:
1914: =item * plainname($uname,$udom,$first)
1915:
1916: Takes a users logon name and returns it as a string in
1917: "first middle last generation" form
1918: if $first is set to 'lastname' then it returns it as
1919: 'lastname generation, firstname middlename' if their is a lastname
1920:
1921: =cut
1922:
1923: ###############################################################
1924: sub plainname {
1925: my ($uname,$udom,$first)=@_;
1926: my %names=&Apache::lonnet::get('environment',
1927: ['firstname','middlename','lastname','generation'],
1928: $udom,$uname);
1929: my $name=&Apache::lonnet::format_name($names{'firstname'},
1930: $names{'middlename'},
1931: $names{'lastname'},
1932: $names{'generation'},$first);
1933: $name=~s/^\s+//;
1934: $name=~s/\s+$//;
1935: $name=~s/\s+/ /g;
1936: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1937: return $name;
1938: }
1939:
1940: # -------------------------------------------------------------------- Nickname
1941: =pod
1942:
1943: =item * nickname($uname,$udom)
1944:
1945: Gets a users name and returns it as a string as
1946:
1947: ""nickname""
1948:
1949: if the user has a nickname or
1950:
1951: "first middle last generation"
1952:
1953: if the user does not
1954:
1955: =cut
1956:
1957: sub nickname {
1958: my ($uname,$udom)=@_;
1959: my %names;
1960: if ($uname eq $env{'user.name'} &&
1961: $udom eq $env{'user.domain'}) {
1962: %names=('nickname' => $env{'environment.nickname'} ,
1963: 'firstname' => $env{'environment.firstname'} ,
1964: 'middlename' => $env{'environment.middlename'},
1965: 'lastname' => $env{'environment.lastname'} ,
1966: 'generation' => $env{'environment.generation'});
1967: } else {
1968: %names=&Apache::lonnet::get('environment',
1969: ['nickname','firstname','middlename',
1970: 'lastname','generation'],$udom,$uname);
1971: }
1972: my $name=$names{'nickname'};
1973: if ($name) {
1974: $name='"'.$name.'"';
1975: } else {
1976: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1977: $names{'lastname'}.' '.$names{'generation'};
1978: $name=~s/\s+$//;
1979: $name=~s/\s+/ /g;
1980: }
1981: return $name;
1982: }
1983:
1984:
1985: # ------------------------------------------------------------------ Screenname
1986:
1987: =pod
1988:
1989: =item * screenname($uname,$udom)
1990:
1991: Gets a users screenname and returns it as a string
1992:
1993: =cut
1994:
1995: sub screenname {
1996: my ($uname,$udom)=@_;
1997: if ($uname eq $env{'user.name'} &&
1998: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
1999: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
2000: return $names{'screenname'};
2001: }
2002:
2003:
2004: # ------------------------------------------------------------- Message Wrapper
2005:
2006: sub messagewrapper {
2007: my ($link,$username,$domain)=@_;
2008: return
2009: '<a href="/adm/email?compose=individual&'.
2010: 'recname='.$username.'&recdom='.$domain.'" '.
2011: 'title="'.&mt('Send message').'">'.$link.'</a>';
2012: }
2013: # --------------------------------------------------------------- Notes Wrapper
2014:
2015: sub noteswrapper {
2016: my ($link,$un,$do)=@_;
2017: return
2018: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
2019: }
2020: # ------------------------------------------------------------- Aboutme Wrapper
2021:
2022: sub aboutmewrapper {
2023: my ($link,$username,$domain,$target)=@_;
2024: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
2025: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
2026: }
2027:
2028: # ------------------------------------------------------------ Syllabus Wrapper
2029:
2030:
2031: sub syllabuswrapper {
2032: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2033: if ($fontcolor) {
2034: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2035: }
2036: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
2037: }
2038:
2039: sub track_student_link {
2040: my ($linktext,$sname,$sdom,$target,$start) = @_;
2041: my $link ="/adm/trackstudent?";
2042: my $title = 'View recent activity';
2043: if (defined($sname) && $sname !~ /^\s*$/ &&
2044: defined($sdom) && $sdom !~ /^\s*$/) {
2045: $link .= "selected_student=$sname:$sdom";
2046: $title .= ' of this student';
2047: }
2048: if (defined($target) && $target !~ /^\s*$/) {
2049: $target = qq{target="$target"};
2050: } else {
2051: $target = '';
2052: }
2053: if ($start) { $link.='&start='.$start; }
2054: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2055: }
2056:
2057: =pod
2058:
2059: =back
2060:
2061: =head1 Access .tab File Data
2062:
2063: =over 4
2064:
2065: =item * languageids()
2066:
2067: returns list of all language ids
2068:
2069: =cut
2070:
2071: sub languageids {
2072: return sort(keys(%language));
2073: }
2074:
2075: =pod
2076:
2077: =item * languagedescription()
2078:
2079: returns description of a specified language id
2080:
2081: =cut
2082:
2083: sub languagedescription {
2084: my $code=shift;
2085: return ($supported_language{$code}?'* ':'').
2086: $language{$code}.
2087: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2088: }
2089:
2090: sub plainlanguagedescription {
2091: my $code=shift;
2092: return $language{$code};
2093: }
2094:
2095: sub supportedlanguagecode {
2096: my $code=shift;
2097: return $supported_language{$code};
2098: }
2099:
2100: =pod
2101:
2102: =item * copyrightids()
2103:
2104: returns list of all copyrights
2105:
2106: =cut
2107:
2108: sub copyrightids {
2109: return sort(keys(%cprtag));
2110: }
2111:
2112: =pod
2113:
2114: =item * copyrightdescription()
2115:
2116: returns description of a specified copyright id
2117:
2118: =cut
2119:
2120: sub copyrightdescription {
2121: return &mt($cprtag{shift(@_)});
2122: }
2123:
2124: =pod
2125:
2126: =item * source_copyrightids()
2127:
2128: returns list of all source copyrights
2129:
2130: =cut
2131:
2132: sub source_copyrightids {
2133: return sort(keys(%scprtag));
2134: }
2135:
2136: =pod
2137:
2138: =item * source_copyrightdescription()
2139:
2140: returns description of a specified source copyright id
2141:
2142: =cut
2143:
2144: sub source_copyrightdescription {
2145: return &mt($scprtag{shift(@_)});
2146: }
2147:
2148: =pod
2149:
2150: =item * filecategories()
2151:
2152: returns list of all file categories
2153:
2154: =cut
2155:
2156: sub filecategories {
2157: return sort(keys(%category_extensions));
2158: }
2159:
2160: =pod
2161:
2162: =item * filecategorytypes()
2163:
2164: returns list of file types belonging to a given file
2165: category
2166:
2167: =cut
2168:
2169: sub filecategorytypes {
2170: return @{$category_extensions{lc($_[0])}};
2171: }
2172:
2173: =pod
2174:
2175: =item * fileembstyle()
2176:
2177: returns embedding style for a specified file type
2178:
2179: =cut
2180:
2181: sub fileembstyle {
2182: return $fe{lc(shift(@_))};
2183: }
2184:
2185:
2186: sub filecategoryselect {
2187: my ($name,$value)=@_;
2188: return &select_form($value,$name,
2189: '' => &mt('Any category'),
2190: map { $_,$_ } sort(keys(%category_extensions)));
2191: }
2192:
2193: =pod
2194:
2195: =item * filedescription()
2196:
2197: returns description for a specified file type
2198:
2199: =cut
2200:
2201: sub filedescription {
2202: my $file_description = $fd{lc(shift())};
2203: $file_description =~ s:([\[\]]):~$1:g;
2204: return &mt($file_description);
2205: }
2206:
2207: =pod
2208:
2209: =item * filedescriptionex()
2210:
2211: returns description for a specified file type with
2212: extra formatting
2213:
2214: =cut
2215:
2216: sub filedescriptionex {
2217: my $ex=shift;
2218: my $file_description = $fd{lc($ex)};
2219: $file_description =~ s:([\[\]]):~$1:g;
2220: return '.'.$ex.' '.&mt($file_description);
2221: }
2222:
2223: # End of .tab access
2224: =pod
2225:
2226: =back
2227:
2228: =cut
2229:
2230: # ------------------------------------------------------------------ File Types
2231: sub fileextensions {
2232: return sort(keys(%fe));
2233: }
2234:
2235: # ----------------------------------------------------------- Display Languages
2236: # returns a hash with all desired display languages
2237: #
2238:
2239: sub display_languages {
2240: my %languages=();
2241: foreach (&preferred_languages()) {
2242: $languages{$_}=1;
2243: }
2244: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2245: if ($env{'form.displaylanguage'}) {
2246: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2247: $languages{$_}=1;
2248: }
2249: }
2250: return %languages;
2251: }
2252:
2253: sub preferred_languages {
2254: my @languages=();
2255: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2256: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2257: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2258: }
2259: if ($env{'environment.languages'}) {
2260: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
2261: }
2262: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2263: if ($browser) {
2264: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2265: }
2266: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2267: @languages=(@languages,
2268: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2269: }
2270: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2271: @languages=(@languages,
2272: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2273: }
2274: if ($Apache::lonnet::domain_lang_def{
2275: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2276: @languages=(@languages,
2277: $Apache::lonnet::domain_lang_def{
2278: $Apache::lonnet::perlvar{'lonDefDomain'}});
2279: }
2280: # turn "en-ca" into "en-ca,en"
2281: my @genlanguages;
2282: foreach (@languages) {
2283: unless ($_=~/\w/) { next; }
2284: push (@genlanguages,$_);
2285: if ($_=~/(\-|\_)/) {
2286: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2287: }
2288: }
2289: return @genlanguages;
2290: }
2291:
2292: ###############################################################
2293: ## Student Answer Attempts ##
2294: ###############################################################
2295:
2296: =pod
2297:
2298: =head1 Alternate Problem Views
2299:
2300: =over 4
2301:
2302: =item * get_previous_attempt($symb, $username, $domain, $course,
2303: $getattempt, $regexp, $gradesub)
2304:
2305: Return string with previous attempt on problem. Arguments:
2306:
2307: =over 4
2308:
2309: =item * $symb: Problem, including path
2310:
2311: =item * $username: username of the desired student
2312:
2313: =item * $domain: domain of the desired student
2314:
2315: =item * $course: Course ID
2316:
2317: =item * $getattempt: Leave blank for all attempts, otherwise put
2318: something
2319:
2320: =item * $regexp: if string matches this regexp, the string will be
2321: sent to $gradesub
2322:
2323: =item * $gradesub: routine that processes the string if it matches $regexp
2324:
2325: =back
2326:
2327: The output string is a table containing all desired attempts, if any.
2328:
2329: =cut
2330:
2331: sub get_previous_attempt {
2332: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2333: my $prevattempts='';
2334: no strict 'refs';
2335: if ($symb) {
2336: my (%returnhash)=
2337: &Apache::lonnet::restore($symb,$course,$domain,$username);
2338: if ($returnhash{'version'}) {
2339: my %lasthash=();
2340: my $version;
2341: for ($version=1;$version<=$returnhash{'version'};$version++) {
2342: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2343: $lasthash{$_}=$returnhash{$version.':'.$_};
2344: }
2345: }
2346: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2347: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2348: foreach (sort(keys %lasthash)) {
2349: my ($ign,@parts) = split(/\./,$_);
2350: if ($#parts > 0) {
2351: my $data=$parts[-1];
2352: pop(@parts);
2353: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2354: } else {
2355: if ($#parts == 0) {
2356: $prevattempts.='<th>'.$parts[0].'</th>';
2357: } else {
2358: $prevattempts.='<th>'.$ign.'</th>';
2359: }
2360: }
2361: }
2362: if ($getattempt eq '') {
2363: for ($version=1;$version<=$returnhash{'version'};$version++) {
2364: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2365: foreach (sort(keys %lasthash)) {
2366: my $value;
2367: if ($_ =~ /timestamp/) {
2368: $value=scalar(localtime($returnhash{$version.':'.$_}));
2369: } else {
2370: $value=$returnhash{$version.':'.$_};
2371: }
2372: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2373: }
2374: }
2375: }
2376: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2377: foreach (sort(keys %lasthash)) {
2378: my $value;
2379: if ($_ =~ /timestamp/) {
2380: $value=scalar(localtime($lasthash{$_}));
2381: } else {
2382: $value=$lasthash{$_};
2383: }
2384: $value=&Apache::lonnet::unescape($value);
2385: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2386: $prevattempts.='<td>'.$value.' </td>';
2387: }
2388: $prevattempts.='</tr></table></td></tr></table>';
2389: } else {
2390: $prevattempts='Nothing submitted - no attempts.';
2391: }
2392: } else {
2393: $prevattempts='No data.';
2394: }
2395: }
2396:
2397: sub relative_to_absolute {
2398: my ($url,$output)=@_;
2399: my $parser=HTML::TokeParser->new(\$output);
2400: my $token;
2401: my $thisdir=$url;
2402: my @rlinks=();
2403: while ($token=$parser->get_token) {
2404: if ($token->[0] eq 'S') {
2405: if ($token->[1] eq 'a') {
2406: if ($token->[2]->{'href'}) {
2407: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2408: }
2409: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2410: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2411: } elsif ($token->[1] eq 'base') {
2412: $thisdir=$token->[2]->{'href'};
2413: }
2414: }
2415: }
2416: $thisdir=~s-/[^/]*$--;
2417: foreach (@rlinks) {
2418: unless (($_=~/^http:\/\//i) ||
2419: ($_=~/^\//) ||
2420: ($_=~/^javascript:/i) ||
2421: ($_=~/^mailto:/i) ||
2422: ($_=~/^\#/)) {
2423: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2424: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2425: }
2426: }
2427: # -------------------------------------------------- Deal with Applet codebases
2428: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2429: return $output;
2430: }
2431:
2432: =pod
2433:
2434: =item * get_student_view
2435:
2436: show a snapshot of what student was looking at
2437:
2438: =cut
2439:
2440: sub get_student_view {
2441: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2442: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2443: my (%form);
2444: my @elements=('symb','courseid','domain','username');
2445: foreach my $element (@elements) {
2446: $form{'grade_'.$element}=eval '$'.$element #'
2447: }
2448: if (defined($moreenv)) {
2449: %form=(%form,%{$moreenv});
2450: }
2451: if (defined($target)) { $form{'grade_target'} = $target; }
2452: $feedurl=&Apache::lonnet::clutter($feedurl);
2453: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2454: $userview=~s/\<body[^\>]*\>//gi;
2455: $userview=~s/\<\/body\>//gi;
2456: $userview=~s/\<html\>//gi;
2457: $userview=~s/\<\/html\>//gi;
2458: $userview=~s/\<head\>//gi;
2459: $userview=~s/\<\/head\>//gi;
2460: $userview=~s/action\s*\=/would_be_action\=/gi;
2461: $userview=&relative_to_absolute($feedurl,$userview);
2462: return $userview;
2463: }
2464:
2465: =pod
2466:
2467: =item * get_student_answers()
2468:
2469: show a snapshot of how student was answering problem
2470:
2471: =cut
2472:
2473: sub get_student_answers {
2474: my ($symb,$username,$domain,$courseid,%form) = @_;
2475: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2476: my (%moreenv);
2477: my @elements=('symb','courseid','domain','username');
2478: foreach my $element (@elements) {
2479: $moreenv{'grade_'.$element}=eval '$'.$element #'
2480: }
2481: $moreenv{'grade_target'}='answer';
2482: %moreenv=(%form,%moreenv);
2483: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2484: return $userview;
2485: }
2486:
2487: =pod
2488:
2489: =item * &submlink()
2490:
2491: Inputs: $text $uname $udom $symb $target
2492:
2493: Returns: A link to grades.pm such as to see the SUBM view of a student
2494:
2495: =cut
2496:
2497: ###############################################
2498: sub submlink {
2499: my ($text,$uname,$udom,$symb,$target)=@_;
2500: if (!($uname && $udom)) {
2501: (my $cursymb, my $courseid,$udom,$uname)=
2502: &Apache::lonxml::whichuser($symb);
2503: if (!$symb) { $symb=$cursymb; }
2504: }
2505: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2506: $symb=&Apache::lonnet::escape($symb);
2507: if ($target) { $target="target=\"$target\""; }
2508: return '<a href="/adm/grades?&command=submission&'.
2509: 'symb='.$symb.'&student='.$uname.
2510: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2511: }
2512: ##############################################
2513:
2514: =pod
2515:
2516: =item * &pgrdlink()
2517:
2518: Inputs: $text $uname $udom $symb $target
2519:
2520: Returns: A link to grades.pm such as to see the PGRD view of a student
2521:
2522: =cut
2523:
2524: ###############################################
2525: sub pgrdlink {
2526: my $link=&submlink(@_);
2527: $link=~s/(&command=submission)/$1&showgrading=yes/;
2528: return $link;
2529: }
2530: ##############################################
2531:
2532: =pod
2533:
2534: =item * &pprmlink()
2535:
2536: Inputs: $text $uname $udom $symb $target
2537:
2538: Returns: A link to parmset.pm such as to see the PPRM view of a
2539: student and a specific resource
2540:
2541: =cut
2542:
2543: ###############################################
2544: sub pprmlink {
2545: my ($text,$uname,$udom,$symb,$target)=@_;
2546: if (!($uname && $udom)) {
2547: (my $cursymb, my $courseid,$udom,$uname)=
2548: &Apache::lonxml::whichuser($symb);
2549: if (!$symb) { $symb=$cursymb; }
2550: }
2551: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2552: $symb=&Apache::lonnet::escape($symb);
2553: if ($target) { $target="target=\"$target\""; }
2554: return '<a href="/adm/parmset?&command=set&'.
2555: 'symb='.$symb.'&uname='.$uname.
2556: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2557: }
2558: ##############################################
2559:
2560: =pod
2561:
2562: =back
2563:
2564: =cut
2565:
2566: ###############################################
2567:
2568:
2569: sub timehash {
2570: my @ltime=localtime(shift);
2571: return ( 'seconds' => $ltime[0],
2572: 'minutes' => $ltime[1],
2573: 'hours' => $ltime[2],
2574: 'day' => $ltime[3],
2575: 'month' => $ltime[4]+1,
2576: 'year' => $ltime[5]+1900,
2577: 'weekday' => $ltime[6],
2578: 'dayyear' => $ltime[7]+1,
2579: 'dlsav' => $ltime[8] );
2580: }
2581:
2582: sub maketime {
2583: my %th=@_;
2584: return POSIX::mktime(
2585: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2586: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2587: }
2588:
2589: #########################################
2590:
2591: sub findallcourses {
2592: my %courses=();
2593: my $now=time;
2594: foreach (keys %env) {
2595: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2596: my ($starttime,$endtime)=$env{$_};
2597: my $active=1;
2598: if ($starttime) {
2599: if ($now<$starttime) { $active=0; }
2600: }
2601: if ($endtime) {
2602: if ($now>$endtime) { $active=0; }
2603: }
2604: if ($active) { $courses{$1.'_'.$2}=1; }
2605: }
2606: }
2607: return keys %courses;
2608: }
2609:
2610: ###############################################
2611: ###############################################
2612:
2613: =pod
2614:
2615: =head1 Domain Template Functions
2616:
2617: =over 4
2618:
2619: =item * &determinedomain()
2620:
2621: Inputs: $domain (usually will be undef)
2622:
2623: Returns: Determines which domain should be used for designs
2624:
2625: =cut
2626:
2627: ###############################################
2628: sub determinedomain {
2629: my $domain=shift;
2630: if (! $domain) {
2631: # Determine domain if we have not been given one
2632: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2633: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2634: if ($env{'request.role.domain'}) {
2635: $domain=$env{'request.role.domain'};
2636: }
2637: }
2638: return $domain;
2639: }
2640: ###############################################
2641: =pod
2642:
2643: =item * &domainlogo()
2644:
2645: Inputs: $domain (usually will be undef)
2646:
2647: Returns: A link to a domain logo, if the domain logo exists.
2648: If the domain logo does not exist, a description of the domain.
2649:
2650: =cut
2651:
2652: ###############################################
2653: sub domainlogo {
2654: my $domain = &determinedomain(shift);
2655: # See if there is a logo
2656: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2657: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2658: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2659: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2660: return $Apache::lonnet::domaindescription{$domain};
2661: } else {
2662: return '';
2663: }
2664: }
2665: ##############################################
2666:
2667: =pod
2668:
2669: =item * &designparm()
2670:
2671: Inputs: $which parameter; $domain (usually will be undef)
2672:
2673: Returns: value of designparamter $which
2674:
2675: =cut
2676:
2677: ##############################################
2678: sub designparm {
2679: my ($which,$domain)=@_;
2680: if ($env{'browser.blackwhite'} eq 'on') {
2681: if ($which=~/\.(font|alink|vlink|link)$/) {
2682: return '#000000';
2683: }
2684: if ($which=~/\.(pgbg|sidebg)$/) {
2685: return '#FFFFFF';
2686: }
2687: if ($which=~/\.tabbg$/) {
2688: return '#CCCCCC';
2689: }
2690: }
2691: if ($env{'environment.color.'.$which}) {
2692: return $env{'environment.color.'.$which};
2693: }
2694: $domain=&determinedomain($domain);
2695: if ($designhash{$domain.'.'.$which}) {
2696: return $designhash{$domain.'.'.$which};
2697: } else {
2698: return $designhash{'default.'.$which};
2699: }
2700: }
2701:
2702: ###############################################
2703: ###############################################
2704:
2705: =pod
2706:
2707: =back
2708:
2709: =head1 HTTP Helpers
2710:
2711: =over 4
2712:
2713: =item * &bodytag()
2714:
2715: Returns a uniform header for LON-CAPA web pages.
2716:
2717: Inputs:
2718:
2719: =over 4
2720:
2721: =item * $title, A title to be displayed on the page.
2722:
2723: =item * $function, the current role (can be undef).
2724:
2725: =item * $addentries, extra parameters for the <body> tag.
2726:
2727: =item * $bodyonly, if defined, only return the <body> tag.
2728:
2729: =item * $domain, if defined, force a given domain.
2730:
2731: =item * $forcereg, if page should register as content page (relevant for
2732: text interface only)
2733:
2734: =back
2735:
2736: Returns: A uniform header for LON-CAPA web pages.
2737: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2738: If $bodyonly is undef or zero, an html string containing a <body> tag and
2739: other decorations will be returned.
2740:
2741: =cut
2742:
2743: sub bodytag {
2744: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,$notopbar)=@_;
2745: $title=&mt($title);
2746: $function = &get_users_function() if (!$function);
2747: my $img=&designparm($function.'.img',$domain);
2748: my $pgbg=&designparm($function.'.pgbg',$domain);
2749: my $tabbg=&designparm($function.'.tabbg',$domain);
2750: my $font=&designparm($function.'.font',$domain);
2751: my $link=&designparm($function.'.link',$domain);
2752: my $alink=&designparm($function.'.alink',$domain);
2753: my $vlink=&designparm($function.'.vlink',$domain);
2754: my $sidebg=&designparm($function.'.sidebg',$domain);
2755: # Accessibility font enhance
2756: unless ($addentries) { $addentries=''; }
2757: my $addstyle='';
2758: if ($env{'browser.fontenhance'} eq 'on') {
2759: $addstyle=' font-size: x-large;';
2760: }
2761: # role and realm
2762: my ($role,$realm)
2763: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
2764: # realm
2765: if ($env{'request.course.id'}) {
2766: $realm=
2767: $env{'course.'.$env{'request.course.id'}.'.description'};
2768: }
2769: unless ($realm) { $realm=' '; }
2770: # Set messages
2771: my $messages=&domainlogo($domain);
2772: # Port for miniserver
2773: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2774: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2775: # construct main body tag
2776: my $bodytag = <<END;
2777: <style type="text/css">
2778: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2779: a:focus { color: red; background: yellow }
2780: table.thinborder { border-collapse: collapse; }
2781: table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
2782: form, .inline { display: inline; }
2783: .center { text-align: center; }
2784: </style>
2785: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2786: style="margin-top: 0px;$addstyle" $addentries>
2787: END
2788: &Apache::lontexconvert::jsMath_reset();
2789: if ($env{'environment.texengine'} eq 'jsMath') {
2790: $bodytag.=&Apache::lontexconvert::jsMath_header();
2791: }
2792:
2793: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2794: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2795: if ($bodyonly) {
2796: return $bodytag;
2797: } elsif ($env{'browser.interface'} eq 'textual') {
2798: # Accessibility
2799:
2800: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2801: $forcereg).
2802: '<h1>LON-CAPA: '.$title.'</h1>';
2803: } elsif ($env{'environment.remote'} eq 'off') {
2804: # No Remote
2805: my $roleinfo=(<<ENDROLE);
2806: <td bgcolor="$tabbg" align="right">
2807: <font size="2" face="Arial, Helvetica, sans-serif">
2808: $env{'environment.firstname'}
2809: $env{'environment.middlename'}
2810: $env{'environment.lastname'}
2811: $env{'environment.generation'}
2812: </font>
2813: <br />
2814: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2815: <br />
2816: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2817: </td>
2818: ENDROLE
2819: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2820: $font.'"><b>'.$title.'</b></font>';
2821: if ($customtitle) {
2822: $titleinfo = $customtitle;
2823: }
2824:
2825: if ($env{'request.state'} eq 'construct') {
2826: my ($uname,$thisdisfn)=
2827: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2828: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2829: $formaction=~s/\/+/\//g;
2830: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2831: my $parentpath = '';
2832: my $lastitem = '';
2833: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2834: $parentpath = $1;
2835: $lastitem = $2;
2836: } else {
2837: $lastitem = $thisdisfn;
2838: }
2839: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2840: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2841: '<form name="dirs" method="post" action="'.$formaction
2842: .'" target="_top"><tt><b>'
2843: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2844: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2845: .'</form>'
2846: .&Apache::lonmenu::constspaceform();
2847:
2848: }
2849: $forcereg=1;
2850: }
2851: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2852: 'cellspacing="3" cellpadding="3">'.
2853: '<tr><td bgcolor="'.$tabbg.'">'.
2854: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2855: if ($env{'request.state'} eq 'construct') {
2856: if ($notopbar) {
2857: $bodytag .= $titletable;
2858: } else {
2859: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2860: }
2861: } else {
2862: if ($notopbar) {
2863: $bodytag .= $titletable;
2864: } else {
2865: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
2866: $titletable;
2867: }
2868: }
2869: return $bodytag;
2870: }
2871:
2872: #
2873: # Top frame rendering, Remote is up
2874: #
2875: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2876: if ($customtitle) {
2877: $titleinfo = $customtitle;
2878: }
2879: #
2880: # Extra info if you are the DC
2881: my $dc_info = '';
2882: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2883: $env{'course.'.$env{'request.course.id'}.
2884: '.domain'}.'/'})) {
2885: my $cid = $env{'request.course.id'};
2886: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
2887: $dc_info = '('.$dc_info.')';
2888: }
2889: #
2890: return(<<ENDBODY);
2891: $bodytag
2892: <table class="thinborder" width="100%" cellspacing="0" border="0" cellpadding="0">
2893: <tr><td bgcolor="$sidebg">
2894: $upperleft</td>
2895: <td bgcolor="$sidebg" align="right">$messages </td>
2896: </tr>
2897: <tr>
2898: <td rowspan="3" bgcolor="$tabbg">
2899: $titleinfo $dc_info
2900: </td><td bgcolor="$tabbg" align="right">
2901: <font size="2" face="Arial, Helvetica, sans-serif">
2902: $env{'environment.firstname'}
2903: $env{'environment.middlename'}
2904: $env{'environment.lastname'}
2905: $env{'environment.generation'}
2906: </font>
2907: </td>
2908: </tr>
2909: <tr><td bgcolor="$tabbg" align="right">
2910: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2911: </td></tr>
2912: <tr>
2913: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2914: </table><br />
2915: ENDBODY
2916: }
2917:
2918: ###############################################
2919: ###############################################
2920:
2921: =pod
2922:
2923: =back
2924:
2925: =head1 HTTP Helpers
2926:
2927: =over 4
2928:
2929: =item * &endbodytag()
2930:
2931: Returns a uniform footer for LON-CAPA web pages.
2932:
2933: Inputs:
2934:
2935: =over 4
2936:
2937: =back
2938:
2939: Returns: A uniform footer for LON-CAPA web pages.
2940:
2941: =cut
2942:
2943: sub endbodytag {
2944: my $endbodytag='</body>';
2945: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
2946: return $endbodytag;
2947: }
2948:
2949: ###############################################
2950:
2951: =pod
2952:
2953: =item get_users_function
2954:
2955: Used by &bodytag to determine the current users primary role.
2956: Returns either 'student','coordinator','admin', or 'author'.
2957:
2958: =cut
2959:
2960: ###############################################
2961: sub get_users_function {
2962: my $function = 'student';
2963: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
2964: $function='coordinator';
2965: }
2966: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
2967: $function='admin';
2968: }
2969: if (($env{'request.role'}=~/^(au|ca)/) ||
2970: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2971: $function='author';
2972: }
2973: return $function;
2974: }
2975:
2976: ###############################################
2977:
2978: =pod
2979:
2980: =item check_user_status
2981:
2982: Determines current status of supplied role for a
2983: specific user. Roles can be active, previous or future.
2984:
2985: Inputs:
2986: user's domain, user's username, course's domain,
2987: course's number, optional section/group.
2988:
2989: Outputs:
2990: role status: active, previous or future.
2991:
2992: =cut
2993:
2994: sub check_user_status {
2995: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
2996: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
2997: my @uroles = keys %userinfo;
2998: my $srchstr;
2999: my $active_chk = 'none';
3000: if (@uroles > 0) {
3001: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
3002: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3003: } else {
3004: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3005: if (grep/^$srchstr$/,@uroles) {
3006: my $role_end = 0;
3007: my $role_start = 0;
3008: $active_chk = 'active';
3009: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3010: $role_end = $2;
3011: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3012: $role_start = $3;
3013: }
3014: }
3015: if ($role_start > 0) {
3016: if (time < $role_start) {
3017: $active_chk = 'future';
3018: }
3019: }
3020: if ($role_end > 0) {
3021: if (time > $role_end) {
3022: $active_chk = 'previous';
3023: }
3024: }
3025: }
3026: }
3027: return $active_chk;
3028: }
3029:
3030: ###############################################
3031:
3032: =pod
3033:
3034: =item get_sections
3035:
3036: Determines all the sections for a course including
3037: sections with students and sections containing other roles.
3038: Incoming parameters: domain, course number, reference to
3039: section hash (keys to be section/group IDs), reference to
3040: array containing roles for which sections should be gathered
3041: (optional). If the fourth argument is undefined, sections
3042: are gathered for any role.
3043:
3044: Returns number of sections.
3045:
3046: =cut
3047:
3048: ###############################################
3049: sub get_sections {
3050: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
3051: if (!($cdom && $cnum)) { return 0; }
3052: my $numsections = 0;
3053:
3054: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
3055: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
3056: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3057: my $status_index = &Apache::loncoursedata::CL_STATUS();
3058: while (my ($student,$data) = each %$classlist) {
3059: my ($section,$status) = ($data->[$sec_index],
3060: $data->[$status_index]);
3061: unless ($section eq '-1' || $section =~ /^\s*$/) {
3062: if (!defined($$sectioncount{$section})) { $numsections++; }
3063: $$sectioncount{$section}++;
3064: }
3065: }
3066: }
3067: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3068: foreach my $user (sort(keys(%courseroles))) {
3069: if ($user !~ /^(\w{2})/) { next; }
3070: my ($role) = ($user =~ /^(\w{2})/);
3071: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3072: my $section;
3073: if ($role eq 'cr' &&
3074: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3075: $section=$1;
3076: }
3077: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3078: if (!defined($section) || $section eq '-1') { next; }
3079: if (!defined($$sectioncount{$section})) { $numsections++; }
3080: $$sectioncount{$section}++;
3081: }
3082: return $numsections;
3083: }
3084:
3085: ###############################################
3086:
3087: =pod
3088:
3089: =item get_group_settings
3090:
3091: Uses TokeParser to extract group information from the
3092: XML used to describe course groups.
3093:
3094: Input:
3095: Scalar containing XML (as retrieved from &lonnet::get_coursegroups).
3096:
3097: Output:
3098: Hash containing group information as key=values for (a), and
3099: hash of hashes for (b)
3100:
3101: Keys (in two categories):
3102: (a) groupname, creator, creation, modified, startdate,enddate.
3103: Corresponding values are name of the group, creator of the group
3104: (username:domain), UNIX time for date group was created, and
3105: settings were last modified, and default start and end access
3106: times for group members.
3107:
3108: (b) functions returned in hash of hashes.
3109: Outer hash key is functions.
3110: Inner hash keys are chat,discussion,email,files,homepage,roster.
3111: Corresponding values are either on or off, depending on
3112: whther this type of functionality is available for the group.
3113:
3114: =cut
3115:
3116: ###############################################
3117:
3118: sub get_group_settings {
3119: my ($groupinfo)=@_;
3120: my $parser=HTML::TokeParser->new(\$groupinfo);
3121: my $token;
3122: my $tool = '';
3123: my %content=();
3124: while ($token=$parser->get_token) {
3125: if ($token->[0] eq 'S') {
3126: my $entry=$token->[1];
3127: if ($entry eq 'functions') {
3128: %{$content{$entry}} = ();
3129: $tool = $entry;
3130: } else {
3131: my $value=$parser->get_text('/'.$entry);
3132: if ($entry eq 'name') {
3133: if ($tool eq 'functions') {
3134: my $function = $token->[2]{id};
3135: $content{$tool}{$function} = $value;
3136: }
3137: } elsif ($entry eq 'groupname') {
3138: $content{$entry}=&Apache::lonnet::unescape($value);
3139: } else {
3140: $content{$entry}=$value;
3141: }
3142: }
3143: } elsif ($token->[0] eq 'E') {
3144: if ($token->[1] eq 'functions') {
3145: $tool = '';
3146: }
3147: }
3148: }
3149: return %content;
3150: }
3151:
3152: sub check_group_access {
3153: my ($group) = @_;
3154: my $access = 1;
3155: my $now = time;
3156: my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
3157: if (($end!=0) && ($end<$now)) { $access = 0; }
3158: if (($start!=0) && ($start>$now)) { $access=0; }
3159: return $access;
3160: }
3161:
3162: ###############################################
3163:
3164: =pod
3165:
3166: =item get_course_users
3167:
3168: Retrieves usernames:domains for users in the specified course
3169: with specific role(s), and access status.
3170:
3171: Incoming parameters:
3172: 1. course domain
3173: 2. course number
3174: 3. access status: users must have - either active,
3175: previous, future, or all.
3176: 4. reference to array of permissible roles
3177: 5. reference to array of section restrictions (optional)
3178: 6. reference to results object (hash of hashes).
3179: 7. reference to optional userdata hash
3180: Keys of top level hash are roles.
3181: Keys of inner hashes are username:domain, with
3182: values set to access type.
3183: Optional userdata hash returns an array with arguments in the
3184: same order as loncoursedata::get_classlist() for student data.
3185:
3186: Entries for end, start, section and status are blank because
3187: of the possibility of multiple values for non-student roles.
3188:
3189: =cut
3190:
3191: ###############################################
3192:
3193: sub get_course_users {
3194: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
3195: my %idx = ();
3196:
3197: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
3198: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
3199: $idx{end} = &Apache::loncoursedata::CL_END();
3200: $idx{start} = &Apache::loncoursedata::CL_START();
3201: $idx{id} = &Apache::loncoursedata::CL_ID();
3202: $idx{section} = &Apache::loncoursedata::CL_SECTION();
3203: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
3204: $idx{status} = &Apache::loncoursedata::CL_STATUS();
3205:
3206: if (grep(/^st$/,@{$roles})) {
3207: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
3208: my $now = time;
3209: foreach my $student (keys(%{$classlist})) {
3210: my $match = 0;
3211: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
3212: unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
3213: @{$sections})) {
3214: next;
3215: }
3216: }
3217: if (defined($$types{'active'})) {
3218: if ($$classlist{$student}[$idx{status}] eq 'Active') {
3219: push(@{$$users{st}{$student}},'active');
3220: $match = 1;
3221: }
3222: }
3223: if (defined($$types{'previous'})) {
3224: if ($$classlist{$student}[$idx{end}] <= $now) {
3225: push(@{$$users{st}{$student}},'previous');
3226: $match = 1;
3227: }
3228: }
3229: if (defined($$types{'future'})) {
3230: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
3231: push(@{$$users{st}{$student}},'future');
3232: $match = 1;
3233: }
3234: }
3235: if ($match && defined($userdata)) {
3236: $$userdata{$student} = $$classlist{$student};
3237: }
3238: }
3239: }
3240: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
3241: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
3242: foreach my $person (@coursepersonnel) {
3243: my $match = 0;
3244: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
3245: $user =~ s/:$//;
3246: if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
3247: my ($uname,$udom,$usec) = split(/:/,$user);
3248: if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
3249: @{$sections} > 0) {
3250: unless(grep(/^\Q$usec\E$/,@{$sections})) {
3251: next;
3252: }
3253: }
3254: if ($uname ne '' && $udom ne '') {
3255: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
3256: foreach my $type (keys(%{$types})) {
3257: if ($status eq $type) {
3258: @{$$users{$role}{$user}} = $type;
3259: $match = 1;
3260: }
3261: }
3262: if ($match && defined($userdata) &&
3263: !exists($$userdata{$uname.':'.$udom})) {
3264: &get_user_info($udom,$uname,\%idx,$userdata);
3265: }
3266: }
3267: }
3268: }
3269: if (grep(/^ow$/,@{$roles})) {
3270: if ((defined($cdom)) && (defined($cnum))) {
3271: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
3272: if ( defined($csettings{'internal.courseowner'}) ) {
3273: my $owner = $csettings{'internal.courseowner'};
3274: @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
3275: if (defined($userdata) &&
3276: !exists($$userdata{$owner.':'.$cdom})) {
3277: &get_user_info($cdom,$owner,\%idx,$userdata);
3278: }
3279: }
3280: }
3281: }
3282: }
3283: return;
3284: }
3285:
3286: sub get_user_info {
3287: my ($udom,$uname,$idx,$userdata) = @_;
3288: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
3289: &plainname($uname,$udom,'lastname');
3290: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
3291: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $udom;
3292: return;
3293: }
3294:
3295: ###############################################
3296:
3297: sub get_posted_cgi {
3298: my $r=shift;
3299:
3300: my $buffer;
3301: if ($r->header_in('Content-length')) {
3302: $r->read($buffer,$r->header_in('Content-length'),0);
3303: }
3304: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
3305: my @pairs=split(/&/,$buffer);
3306: my $pair;
3307: foreach $pair (@pairs) {
3308: my ($name,$value) = split(/=/,$pair);
3309: $value =~ tr/+/ /;
3310: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3311: $name =~ tr/+/ /;
3312: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3313: &add_to_env("form.$name",$value);
3314: }
3315: } else {
3316: my $contentsep=$1;
3317: my @lines = split (/\n/,$buffer);
3318: my $name='';
3319: my $value='';
3320: my $fname='';
3321: my $fmime='';
3322: my $i;
3323: for ($i=0;$i<=$#lines;$i++) {
3324: if ($lines[$i]=~/^$contentsep/) {
3325: if ($name) {
3326: chomp($value);
3327: if ($fname) {
3328: $env{"form.$name.filename"}=$fname;
3329: $env{"form.$name.mimetype"}=$fmime;
3330: } else {
3331: $value=~s/\s+$//s;
3332: }
3333: &add_to_env("form.$name",$value);
3334: }
3335: if ($i<$#lines) {
3336: $i++;
3337: $lines[$i]=~
3338: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
3339: $name=$1;
3340: $value='';
3341: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
3342: $fname=$1;
3343: if
3344: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
3345: $fmime=$1;
3346: $i++;
3347: } else {
3348: $fmime='';
3349: }
3350: } else {
3351: $fname='';
3352: $fmime='';
3353: }
3354: $i++;
3355: }
3356: } else {
3357: $value.=$lines[$i]."\n";
3358: }
3359: }
3360: }
3361: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
3362: $r->method_number(M_GET);
3363: $r->method('GET');
3364: $r->headers_in->unset('Content-length');
3365: }
3366:
3367: =pod
3368:
3369: =item * get_unprocessed_cgi($query,$possible_names)
3370:
3371: Modify the %env hash to contain unprocessed CGI form parameters held in
3372: $query. The parameters listed in $possible_names (an array reference),
3373: will be set in $env{'form.name'} if they do not already exist.
3374:
3375: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3376: $possible_names is an ref to an array of form element names. As an example:
3377: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
3378: will result in $env{'form.uname'} and $env{'form.udom'} being set.
3379:
3380: =cut
3381:
3382: sub get_unprocessed_cgi {
3383: my ($query,$possible_names)= @_;
3384: # $Apache::lonxml::debug=1;
3385: foreach (split(/&/,$query)) {
3386: my ($name, $value) = split(/=/,$_);
3387: $name = &Apache::lonnet::unescape($name);
3388: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3389: $value =~ tr/+/ /;
3390: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3391: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
3392: }
3393: }
3394: }
3395:
3396: =pod
3397:
3398: =item * cacheheader()
3399:
3400: returns cache-controlling header code
3401:
3402: =cut
3403:
3404: sub cacheheader {
3405: unless ($env{'request.method'} eq 'GET') { return ''; }
3406: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3407: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
3408: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3409: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
3410: return $output;
3411: }
3412:
3413: =pod
3414:
3415: =item * no_cache($r)
3416:
3417: specifies header code to not have cache
3418:
3419: =cut
3420:
3421: sub no_cache {
3422: my ($r) = @_;
3423: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
3424: $env{'request.method'} ne 'GET') { return ''; }
3425: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3426: $r->no_cache(1);
3427: $r->header_out("Expires" => $date);
3428: $r->header_out("Pragma" => "no-cache");
3429: }
3430:
3431: sub content_type {
3432: my ($r,$type,$charset) = @_;
3433: &no_cache($r);
3434: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
3435: unless ($charset) {
3436: $charset=&Apache::lonlocal::current_encoding;
3437: }
3438: if ($charset) { $type.='; charset='.$charset; }
3439: if ($r) {
3440: $r->content_type($type);
3441: } else {
3442: print("Content-type: $type\n\n");
3443: }
3444: }
3445:
3446: =pod
3447:
3448: =item * add_to_env($name,$value)
3449:
3450: adds $name to the %env hash with value
3451: $value, if $name already exists, the entry is converted to an array
3452: reference and $value is added to the array.
3453:
3454: =cut
3455:
3456: sub add_to_env {
3457: my ($name,$value)=@_;
3458: if (defined($env{$name})) {
3459: if (ref($env{$name})) {
3460: #already have multiple values
3461: push(@{ $env{$name} },$value);
3462: } else {
3463: #first time seeing multiple values, convert hash entry to an arrayref
3464: my $first=$env{$name};
3465: undef($env{$name});
3466: push(@{ $env{$name} },$first,$value);
3467: }
3468: } else {
3469: $env{$name}=$value;
3470: }
3471: }
3472:
3473: =pod
3474:
3475: =item * get_env_multiple($name)
3476:
3477: gets $name from the %env hash, it seemlessly handles the cases where multiple
3478: values may be defined and end up as an array ref.
3479:
3480: returns an array of values
3481:
3482: =cut
3483:
3484: sub get_env_multiple {
3485: my ($name) = @_;
3486: my @values;
3487: if (defined($env{$name})) {
3488: # exists is it an array
3489: if (ref($env{$name})) {
3490: @values=@{ $env{$name} };
3491: } else {
3492: $values[0]=$env{$name};
3493: }
3494: }
3495: return(@values);
3496: }
3497:
3498:
3499: =pod
3500:
3501: =back
3502:
3503: =head1 CSV Upload/Handling functions
3504:
3505: =over 4
3506:
3507: =item * upfile_store($r)
3508:
3509: Store uploaded file, $r should be the HTTP Request object,
3510: needs $env{'form.upfile'}
3511: returns $datatoken to be put into hidden field
3512:
3513: =cut
3514:
3515: sub upfile_store {
3516: my $r=shift;
3517: $env{'form.upfile'}=~s/\r/\n/gs;
3518: $env{'form.upfile'}=~s/\f/\n/gs;
3519: $env{'form.upfile'}=~s/\n+/\n/gs;
3520: $env{'form.upfile'}=~s/\n+$//gs;
3521:
3522: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
3523: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
3524: {
3525: my $datafile = $r->dir_config('lonDaemons').
3526: '/tmp/'.$datatoken.'.tmp';
3527: if ( open(my $fh,">$datafile") ) {
3528: print $fh $env{'form.upfile'};
3529: close($fh);
3530: }
3531: }
3532: return $datatoken;
3533: }
3534:
3535: =pod
3536:
3537: =item * load_tmp_file($r)
3538:
3539: Load uploaded file from tmp, $r should be the HTTP Request object,
3540: needs $env{'form.datatoken'},
3541: sets $env{'form.upfile'} to the contents of the file
3542:
3543: =cut
3544:
3545: sub load_tmp_file {
3546: my $r=shift;
3547: my @studentdata=();
3548: {
3549: my $studentfile = $r->dir_config('lonDaemons').
3550: '/tmp/'.$env{'form.datatoken'}.'.tmp';
3551: if ( open(my $fh,"<$studentfile") ) {
3552: @studentdata=<$fh>;
3553: close($fh);
3554: }
3555: }
3556: $env{'form.upfile'}=join('',@studentdata);
3557: }
3558:
3559: =pod
3560:
3561: =item * upfile_record_sep()
3562:
3563: Separate uploaded file into records
3564: returns array of records,
3565: needs $env{'form.upfile'} and $env{'form.upfiletype'}
3566:
3567: =cut
3568:
3569: sub upfile_record_sep {
3570: if ($env{'form.upfiletype'} eq 'xml') {
3571: } else {
3572: my @records;
3573: foreach my $line (split(/\n/,$env{'form.upfile'})) {
3574: if ($line=~/^\s*$/) { next; }
3575: push(@records,$line);
3576: }
3577: return @records;
3578: }
3579: }
3580:
3581: =pod
3582:
3583: =item * record_sep($record)
3584:
3585: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
3586:
3587: =cut
3588:
3589: sub takeleft {
3590: my $index=shift;
3591: return substr('0000'.$index,-4,4);
3592: }
3593:
3594: sub record_sep {
3595: my $record=shift;
3596: my %components=();
3597: if ($env{'form.upfiletype'} eq 'xml') {
3598: } elsif ($env{'form.upfiletype'} eq 'space') {
3599: my $i=0;
3600: foreach (split(/\s+/,$record)) {
3601: my $field=$_;
3602: $field=~s/^(\"|\')//;
3603: $field=~s/(\"|\')$//;
3604: $components{&takeleft($i)}=$field;
3605: $i++;
3606: }
3607: } elsif ($env{'form.upfiletype'} eq 'tab') {
3608: my $i=0;
3609: foreach (split(/\t/,$record)) {
3610: my $field=$_;
3611: $field=~s/^(\"|\')//;
3612: $field=~s/(\"|\')$//;
3613: $components{&takeleft($i)}=$field;
3614: $i++;
3615: }
3616: } else {
3617: my @allfields=split(/\,/,$record);
3618: my $i=0;
3619: my $j;
3620: for ($j=0;$j<=$#allfields;$j++) {
3621: my $field=$allfields[$j];
3622: if ($field=~/^\s*(\"|\')/) {
3623: my $delimiter=$1;
3624: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
3625: $j++;
3626: $field.=','.$allfields[$j];
3627: }
3628: $field=~s/^\s*$delimiter//;
3629: $field=~s/$delimiter\s*$//;
3630: }
3631: $components{&takeleft($i)}=$field;
3632: $i++;
3633: }
3634: }
3635: return %components;
3636: }
3637:
3638: ######################################################
3639: ######################################################
3640:
3641: =pod
3642:
3643: =item * upfile_select_html()
3644:
3645: Return HTML code to select a file from the users machine and specify
3646: the file type.
3647:
3648: =cut
3649:
3650: ######################################################
3651: ######################################################
3652: sub upfile_select_html {
3653: my %Types = (
3654: csv => &mt('CSV (comma separated values, spreadsheet)'),
3655: space => &mt('Space separated'),
3656: tab => &mt('Tabulator separated'),
3657: # xml => &mt('HTML/XML'),
3658: );
3659: my $Str = '<input type="file" name="upfile" size="50" />'.
3660: '<br />Type: <select name="upfiletype">';
3661: foreach my $type (sort(keys(%Types))) {
3662: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3663: }
3664: $Str .= "</select>\n";
3665: return $Str;
3666: }
3667:
3668: ######################################################
3669: ######################################################
3670:
3671: =pod
3672:
3673: =item * csv_print_samples($r,$records)
3674:
3675: Prints a table of sample values from each column uploaded $r is an
3676: Apache Request ref, $records is an arrayref from
3677: &Apache::loncommon::upfile_record_sep
3678:
3679: =cut
3680:
3681: ######################################################
3682: ######################################################
3683: sub csv_print_samples {
3684: my ($r,$records) = @_;
3685: my (%sone,%stwo,%sthree);
3686: %sone=&record_sep($$records[0]);
3687: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3688: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3689: #
3690: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3691: foreach (sort({$a <=> $b} keys(%sone))) {
3692: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3693: $r->print('</tr>');
3694: foreach my $hash (\%sone,\%stwo,\%sthree) {
3695: $r->print('<tr>');
3696: foreach (sort({$a <=> $b} keys(%sone))) {
3697: $r->print('<td>');
3698: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3699: $r->print('</td>');
3700: }
3701: $r->print('</tr>');
3702: }
3703: $r->print('</tr></table><br />'."\n");
3704: }
3705:
3706: ######################################################
3707: ######################################################
3708:
3709: =pod
3710:
3711: =item * csv_print_select_table($r,$records,$d)
3712:
3713: Prints a table to create associations between values and table columns.
3714:
3715: $r is an Apache Request ref,
3716: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3717: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3718:
3719: =cut
3720:
3721: ######################################################
3722: ######################################################
3723: sub csv_print_select_table {
3724: my ($r,$records,$d) = @_;
3725: my $i=0;my %sone;
3726: %sone=&record_sep($$records[0]);
3727: $r->print(&mt('Associate columns with student attributes.')."\n".
3728: '<table border="2"><tr>'.
3729: '<th>'.&mt('Attribute').'</th>'.
3730: '<th>'.&mt('Column').'</th></tr>'."\n");
3731: foreach (@$d) {
3732: my ($value,$display,$defaultcol)=@{ $_ };
3733: $r->print('<tr><td>'.$display.'</td>');
3734:
3735: $r->print('<td><select name=f'.$i.
3736: ' onchange="javascript:flip(this.form,'.$i.');">');
3737: $r->print('<option value="none"></option>');
3738: foreach (sort({$a <=> $b} keys(%sone))) {
3739: $r->print('<option value="'.$_.'"'.
3740: ($_ eq $defaultcol ? ' selected="selected" ' : '').
3741: '>Column '.($_+1).'</option>');
3742: }
3743: $r->print('</select></td></tr>'."\n");
3744: $i++;
3745: }
3746: $i--;
3747: return $i;
3748: }
3749:
3750: ######################################################
3751: ######################################################
3752:
3753: =pod
3754:
3755: =item * csv_samples_select_table($r,$records,$d)
3756:
3757: Prints a table of sample values from the upload and can make associate samples to internal names.
3758:
3759: $r is an Apache Request ref,
3760: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3761: $d is an array of 2 element arrays (internal name, displayed name)
3762:
3763: =cut
3764:
3765: ######################################################
3766: ######################################################
3767: sub csv_samples_select_table {
3768: my ($r,$records,$d) = @_;
3769: my %sone; my %stwo; my %sthree;
3770: my $i=0;
3771: #
3772: $r->print('<table border=2><tr><th>'.
3773: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3774: %sone=&record_sep($$records[0]);
3775: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3776: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3777: #
3778: foreach (sort keys %sone) {
3779: $r->print('<tr><td><select name="f'.$i.'"'.
3780: ' onchange="javascript:flip(this.form,'.$i.');">');
3781: foreach (@$d) {
3782: my ($value,$display,$defaultcol)=@{ $_ };
3783: $r->print('<option value="'.$value.'"'.
3784: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
3785: $display.'</option>');
3786: }
3787: $r->print('</select></td><td>');
3788: if (defined($sone{$_})) { $r->print($sone{$_}."<br />\n"); }
3789: if (defined($stwo{$_})) { $r->print($stwo{$_}."<br />\n"); }
3790: if (defined($sthree{$_})) { $r->print($sthree{$_}."<br />\n"); }
3791: $r->print('</td></tr>');
3792: $i++;
3793: }
3794: $i--;
3795: return($i);
3796: }
3797:
3798: ######################################################
3799: ######################################################
3800:
3801: =pod
3802:
3803: =item clean_excel_name($name)
3804:
3805: Returns a replacement for $name which does not contain any illegal characters.
3806:
3807: =cut
3808:
3809: ######################################################
3810: ######################################################
3811: sub clean_excel_name {
3812: my ($name) = @_;
3813: $name =~ s/[:\*\?\/\\]//g;
3814: if (length($name) > 31) {
3815: $name = substr($name,0,31);
3816: }
3817: return $name;
3818: }
3819:
3820: =pod
3821:
3822: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3823:
3824: Returns either 1 or undef
3825:
3826: 1 if the part is to be hidden, undef if it is to be shown
3827:
3828: Arguments are:
3829:
3830: $id the id of the part to be checked
3831: $symb, optional the symb of the resource to check
3832: $udom, optional the domain of the user to check for
3833: $uname, optional the username of the user to check for
3834:
3835: =cut
3836:
3837: sub check_if_partid_hidden {
3838: my ($id,$symb,$udom,$uname) = @_;
3839: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3840: $symb,$udom,$uname);
3841: my $truth=1;
3842: #if the string starts with !, then the list is the list to show not hide
3843: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3844: my @hiddenlist=split(/,/,$hiddenparts);
3845: foreach my $checkid (@hiddenlist) {
3846: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3847: }
3848: return !$truth;
3849: }
3850:
3851:
3852: ############################################################
3853: ############################################################
3854:
3855: =pod
3856:
3857: =back
3858:
3859: =head1 cgi-bin script and graphing routines
3860:
3861: =over 4
3862:
3863: =item get_cgi_id
3864:
3865: Inputs: none
3866:
3867: Returns an id which can be used to pass environment variables
3868: to various cgi-bin scripts. These environment variables will
3869: be removed from the users environment after a given time by
3870: the routine &Apache::lonnet::transfer_profile_to_env.
3871:
3872: =cut
3873:
3874: ############################################################
3875: ############################################################
3876: my $uniq=0;
3877: sub get_cgi_id {
3878: $uniq=($uniq+1)%100000;
3879: return (time.'_'.$$.'_'.$uniq);
3880: }
3881:
3882: ############################################################
3883: ############################################################
3884:
3885: =pod
3886:
3887: =item DrawBarGraph
3888:
3889: Facilitates the plotting of data in a (stacked) bar graph.
3890: Puts plot definition data into the users environment in order for
3891: graph.png to plot it. Returns an <img> tag for the plot.
3892: The bars on the plot are labeled '1','2',...,'n'.
3893:
3894: Inputs:
3895:
3896: =over 4
3897:
3898: =item $Title: string, the title of the plot
3899:
3900: =item $xlabel: string, text describing the X-axis of the plot
3901:
3902: =item $ylabel: string, text describing the Y-axis of the plot
3903:
3904: =item $Max: scalar, the maximum Y value to use in the plot
3905: If $Max is < any data point, the graph will not be rendered.
3906:
3907: =item $colors: array ref holding the colors to be used for the data sets when
3908: they are plotted. If undefined, default values will be used.
3909:
3910: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3911:
3912: =item @Values: An array of array references. Each array reference holds data
3913: to be plotted in a stacked bar chart.
3914:
3915: =item If the final element of @Values is a hash reference the key/value
3916: pairs will be added to the graph definition.
3917:
3918: =back
3919:
3920: Returns:
3921:
3922: An <img> tag which references graph.png and the appropriate identifying
3923: information for the plot.
3924:
3925: =cut
3926:
3927: ############################################################
3928: ############################################################
3929: sub DrawBarGraph {
3930: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3931: #
3932: if (! defined($colors)) {
3933: $colors = ['#33ff00',
3934: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3935: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3936: ];
3937: }
3938: my $extra_settings = {};
3939: if (ref($Values[-1]) eq 'HASH') {
3940: $extra_settings = pop(@Values);
3941: }
3942: #
3943: my $identifier = &get_cgi_id();
3944: my $id = 'cgi.'.$identifier;
3945: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3946: return '';
3947: }
3948: #
3949: my @Labels;
3950: if (defined($labels)) {
3951: @Labels = @$labels;
3952: } else {
3953: for (my $i=0;$i<@{$Values[0]};$i++) {
3954: push (@Labels,$i+1);
3955: }
3956: }
3957: #
3958: my $NumBars = scalar(@{$Values[0]});
3959: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
3960: my %ValuesHash;
3961: my $NumSets=1;
3962: foreach my $array (@Values) {
3963: next if (! ref($array));
3964: $ValuesHash{$id.'.data.'.$NumSets++} =
3965: join(',',@$array);
3966: }
3967: #
3968: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3969: if ($NumBars < 3) {
3970: $width = 120+$NumBars*32;
3971: $xskip = 1;
3972: $bar_width = 30;
3973: } elsif ($NumBars < 5) {
3974: $width = 120+$NumBars*20;
3975: $xskip = 1;
3976: $bar_width = 20;
3977: } elsif ($NumBars < 10) {
3978: $width = 120+$NumBars*15;
3979: $xskip = 1;
3980: $bar_width = 15;
3981: } elsif ($NumBars <= 25) {
3982: $width = 120+$NumBars*11;
3983: $xskip = 5;
3984: $bar_width = 8;
3985: } elsif ($NumBars <= 50) {
3986: $width = 120+$NumBars*8;
3987: $xskip = 5;
3988: $bar_width = 4;
3989: } else {
3990: $width = 120+$NumBars*8;
3991: $xskip = 5;
3992: $bar_width = 4;
3993: }
3994: #
3995: $Max = 1 if ($Max < 1);
3996: if ( int($Max) < $Max ) {
3997: $Max++;
3998: $Max = int($Max);
3999: }
4000: $Title = '' if (! defined($Title));
4001: $xlabel = '' if (! defined($xlabel));
4002: $ylabel = '' if (! defined($ylabel));
4003: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
4004: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
4005: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
4006: $ValuesHash{$id.'.y_max_value'} = $Max;
4007: $ValuesHash{$id.'.NumBars'} = $NumBars;
4008: $ValuesHash{$id.'.NumSets'} = $NumSets;
4009: $ValuesHash{$id.'.PlotType'} = 'bar';
4010: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4011: $ValuesHash{$id.'.height'} = $height;
4012: $ValuesHash{$id.'.width'} = $width;
4013: $ValuesHash{$id.'.xskip'} = $xskip;
4014: $ValuesHash{$id.'.bar_width'} = $bar_width;
4015: $ValuesHash{$id.'.labels'} = join(',',@Labels);
4016: #
4017: # Deal with other parameters
4018: while (my ($key,$value) = each(%$extra_settings)) {
4019: $ValuesHash{$id.'.'.$key} = $value;
4020: }
4021: #
4022: &Apache::lonnet::appenv(%ValuesHash);
4023: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4024: }
4025:
4026: ############################################################
4027: ############################################################
4028:
4029: =pod
4030:
4031: =item DrawXYGraph
4032:
4033: Facilitates the plotting of data in an XY graph.
4034: Puts plot definition data into the users environment in order for
4035: graph.png to plot it. Returns an <img> tag for the plot.
4036:
4037: Inputs:
4038:
4039: =over 4
4040:
4041: =item $Title: string, the title of the plot
4042:
4043: =item $xlabel: string, text describing the X-axis of the plot
4044:
4045: =item $ylabel: string, text describing the Y-axis of the plot
4046:
4047: =item $Max: scalar, the maximum Y value to use in the plot
4048: If $Max is < any data point, the graph will not be rendered.
4049:
4050: =item $colors: Array ref containing the hex color codes for the data to be
4051: plotted in. If undefined, default values will be used.
4052:
4053: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4054:
4055: =item $Ydata: Array ref containing Array refs.
4056: Each of the contained arrays will be plotted as a separate curve.
4057:
4058: =item %Values: hash indicating or overriding any default values which are
4059: passed to graph.png.
4060: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4061:
4062: =back
4063:
4064: Returns:
4065:
4066: An <img> tag which references graph.png and the appropriate identifying
4067: information for the plot.
4068:
4069: =cut
4070:
4071: ############################################################
4072: ############################################################
4073: sub DrawXYGraph {
4074: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
4075: #
4076: # Create the identifier for the graph
4077: my $identifier = &get_cgi_id();
4078: my $id = 'cgi.'.$identifier;
4079: #
4080: $Title = '' if (! defined($Title));
4081: $xlabel = '' if (! defined($xlabel));
4082: $ylabel = '' if (! defined($ylabel));
4083: my %ValuesHash =
4084: (
4085: $id.'.title' => &Apache::lonnet::escape($Title),
4086: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4087: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4088: $id.'.y_max_value'=> $Max,
4089: $id.'.labels' => join(',',@$Xlabels),
4090: $id.'.PlotType' => 'XY',
4091: );
4092: #
4093: if (defined($colors) && ref($colors) eq 'ARRAY') {
4094: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4095: }
4096: #
4097: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
4098: return '';
4099: }
4100: my $NumSets=1;
4101: foreach my $array (@{$Ydata}){
4102: next if (! ref($array));
4103: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4104: }
4105: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
4106: #
4107: # Deal with other parameters
4108: while (my ($key,$value) = each(%Values)) {
4109: $ValuesHash{$id.'.'.$key} = $value;
4110: }
4111: #
4112: &Apache::lonnet::appenv(%ValuesHash);
4113: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4114: }
4115:
4116: ############################################################
4117: ############################################################
4118:
4119: =pod
4120:
4121: =item DrawXYYGraph
4122:
4123: Facilitates the plotting of data in an XY graph with two Y axes.
4124: Puts plot definition data into the users environment in order for
4125: graph.png to plot it. Returns an <img> tag for the plot.
4126:
4127: Inputs:
4128:
4129: =over 4
4130:
4131: =item $Title: string, the title of the plot
4132:
4133: =item $xlabel: string, text describing the X-axis of the plot
4134:
4135: =item $ylabel: string, text describing the Y-axis of the plot
4136:
4137: =item $colors: Array ref containing the hex color codes for the data to be
4138: plotted in. If undefined, default values will be used.
4139:
4140: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4141:
4142: =item $Ydata1: The first data set
4143:
4144: =item $Min1: The minimum value of the left Y-axis
4145:
4146: =item $Max1: The maximum value of the left Y-axis
4147:
4148: =item $Ydata2: The second data set
4149:
4150: =item $Min2: The minimum value of the right Y-axis
4151:
4152: =item $Max2: The maximum value of the left Y-axis
4153:
4154: =item %Values: hash indicating or overriding any default values which are
4155: passed to graph.png.
4156: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4157:
4158: =back
4159:
4160: Returns:
4161:
4162: An <img> tag which references graph.png and the appropriate identifying
4163: information for the plot.
4164:
4165: =cut
4166:
4167: ############################################################
4168: ############################################################
4169: sub DrawXYYGraph {
4170: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4171: $Ydata2,$Min2,$Max2,%Values)=@_;
4172: #
4173: # Create the identifier for the graph
4174: my $identifier = &get_cgi_id();
4175: my $id = 'cgi.'.$identifier;
4176: #
4177: $Title = '' if (! defined($Title));
4178: $xlabel = '' if (! defined($xlabel));
4179: $ylabel = '' if (! defined($ylabel));
4180: my %ValuesHash =
4181: (
4182: $id.'.title' => &Apache::lonnet::escape($Title),
4183: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4184: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4185: $id.'.labels' => join(',',@$Xlabels),
4186: $id.'.PlotType' => 'XY',
4187: $id.'.NumSets' => 2,
4188: $id.'.two_axes' => 1,
4189: $id.'.y1_max_value' => $Max1,
4190: $id.'.y1_min_value' => $Min1,
4191: $id.'.y2_max_value' => $Max2,
4192: $id.'.y2_min_value' => $Min2,
4193: );
4194: #
4195: if (defined($colors) && ref($colors) eq 'ARRAY') {
4196: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4197: }
4198: #
4199: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4200: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
4201: return '';
4202: }
4203: my $NumSets=1;
4204: foreach my $array ($Ydata1,$Ydata2){
4205: next if (! ref($array));
4206: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4207: }
4208: #
4209: # Deal with other parameters
4210: while (my ($key,$value) = each(%Values)) {
4211: $ValuesHash{$id.'.'.$key} = $value;
4212: }
4213: #
4214: &Apache::lonnet::appenv(%ValuesHash);
4215: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4216: }
4217:
4218: ############################################################
4219: ############################################################
4220:
4221: =pod
4222:
4223: =back
4224:
4225: =head1 Statistics helper routines?
4226:
4227: Bad place for them but what the hell.
4228:
4229: =over 4
4230:
4231: =item &chartlink
4232:
4233: Returns a link to the chart for a specific student.
4234:
4235: Inputs:
4236:
4237: =over 4
4238:
4239: =item $linktext: The text of the link
4240:
4241: =item $sname: The students username
4242:
4243: =item $sdomain: The students domain
4244:
4245: =back
4246:
4247: =back
4248:
4249: =cut
4250:
4251: ############################################################
4252: ############################################################
4253: sub chartlink {
4254: my ($linktext, $sname, $sdomain) = @_;
4255: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
4256: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
4257: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
4258: '">'.$linktext.'</a>';
4259: }
4260:
4261: #######################################################
4262: #######################################################
4263:
4264: =pod
4265:
4266: =head1 Course Environment Routines
4267:
4268: =over 4
4269:
4270: =item &restore_course_settings
4271:
4272: =item &store_course_settings
4273:
4274: Restores/Store indicated form parameters from the course environment.
4275: Will not overwrite existing values of the form parameters.
4276:
4277: Inputs:
4278: a scalar describing the data (e.g. 'chart', 'problem_analysis')
4279:
4280: a hash ref describing the data to be stored. For example:
4281:
4282: %Save_Parameters = ('Status' => 'scalar',
4283: 'chartoutputmode' => 'scalar',
4284: 'chartoutputdata' => 'scalar',
4285: 'Section' => 'array',
4286: 'StudentData' => 'array',
4287: 'Maps' => 'array');
4288:
4289: Returns: both routines return nothing
4290:
4291: =cut
4292:
4293: #######################################################
4294: #######################################################
4295: sub store_course_settings {
4296: # save to the environment
4297: # appenv the same items, just to be safe
4298: my $courseid = $env{'request.course.id'};
4299: my $coursedom = $env{'course.'.$courseid.'.domain'};
4300: my ($prefix,$Settings) = @_;
4301: my %SaveHash;
4302: my %AppHash;
4303: while (my ($setting,$type) = each(%$Settings)) {
4304: my $basename = 'internal.'.$prefix.'.'.$setting;
4305: my $envname = 'course.'.$courseid.'.'.$basename;
4306: if (exists($env{'form.'.$setting})) {
4307: # Save this value away
4308: if ($type eq 'scalar' &&
4309: (! exists($env{$envname}) ||
4310: $env{$envname} ne $env{'form.'.$setting})) {
4311: $SaveHash{$basename} = $env{'form.'.$setting};
4312: $AppHash{$envname} = $env{'form.'.$setting};
4313: } elsif ($type eq 'array') {
4314: my $stored_form;
4315: if (ref($env{'form.'.$setting})) {
4316: $stored_form = join(',',
4317: map {
4318: &Apache::lonnet::escape($_);
4319: } sort(@{$env{'form.'.$setting}}));
4320: } else {
4321: $stored_form =
4322: &Apache::lonnet::escape($env{'form.'.$setting});
4323: }
4324: # Determine if the array contents are the same.
4325: if ($stored_form ne $env{$envname}) {
4326: $SaveHash{$basename} = $stored_form;
4327: $AppHash{$envname} = $stored_form;
4328: }
4329: }
4330: }
4331: }
4332: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
4333: $coursedom,
4334: $env{'course.'.$courseid.'.num'});
4335: if ($put_result !~ /^(ok|delayed)/) {
4336: &Apache::lonnet::logthis('unable to save form parameters, '.
4337: 'got error:'.$put_result);
4338: }
4339: # Make sure these settings stick around in this session, too
4340: &Apache::lonnet::appenv(%AppHash);
4341: return;
4342: }
4343:
4344: sub restore_course_settings {
4345: my $courseid = $env{'request.course.id'};
4346: my ($prefix,$Settings) = @_;
4347: while (my ($setting,$type) = each(%$Settings)) {
4348: next if (exists($env{'form.'.$setting}));
4349: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
4350: '.'.$setting;
4351: if (exists($env{$envname})) {
4352: if ($type eq 'scalar') {
4353: $env{'form.'.$setting} = $env{$envname};
4354: } elsif ($type eq 'array') {
4355: $env{'form.'.$setting} = [
4356: map {
4357: &Apache::lonnet::unescape($_);
4358: } split(',',$env{$envname})
4359: ];
4360: }
4361: }
4362: }
4363: }
4364:
4365: ############################################################
4366: ############################################################
4367:
4368: sub propath {
4369: my ($udom,$uname)=@_;
4370: $udom=~s/\W//g;
4371: $uname=~s/\W//g;
4372: my $subdir=$uname.'__';
4373: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4374: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4375: return $proname;
4376: }
4377:
4378: sub icon {
4379: my ($file)=@_;
4380: my $curfext = (split(/\./,$file))[-1];
4381: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
4382: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
4383: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4384: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4385: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4386: $curfext.".gif") {
4387: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4388: $curfext.".gif";
4389: }
4390: }
4391: return &lonhttpdurl($iconname);
4392: }
4393:
4394: sub lonhttpdurl {
4395: my ($url)=@_;
4396: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4397: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4398: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4399: }
4400:
4401: sub connection_aborted {
4402: my ($r)=@_;
4403: $r->print(" ");$r->rflush();
4404: my $c = $r->connection;
4405: return $c->aborted();
4406: }
4407:
4408: # Escapes strings that may have embedded 's that will be put into
4409: # strings as 'strings'.
4410: sub escape_single {
4411: my ($input) = @_;
4412: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
4413: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4414: return $input;
4415: }
4416:
4417: # Same as escape_single, but escape's "'s This
4418: # can be used for "strings"
4419: sub escape_double {
4420: my ($input) = @_;
4421: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4422: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4423: return $input;
4424: }
4425:
4426: # Escapes the last element of a full URL.
4427: sub escape_url {
4428: my ($url) = @_;
4429: my @urlslices = split(/\//, $url,-1);
4430: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4431: return join('/',@urlslices).'/'.$lastitem;
4432: }
4433: =pod
4434:
4435: =back
4436:
4437: =cut
4438:
4439: 1;
4440: __END__;
4441:
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