1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.356 2006/04/26 15:29:51 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet;
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::lonmenu();
62: use Apache::lonlocal;
63: use HTML::Entities;
64: use Apache::lonhtmlcommon();
65: use Apache::loncoursedata();
66: use Apache::lontexconvert();
67:
68: my $readit;
69:
70: ##
71: ## Global Variables
72: ##
73:
74: # ----------------------------------------------- Filetypes/Languages/Copyright
75: my %language;
76: my %supported_language;
77: my %cprtag;
78: my %scprtag;
79: my %fe; my %fd; my %fm;
80: my %category_extensions;
81:
82: # ---------------------------------------------- Designs
83:
84: my %designhash;
85:
86: # ---------------------------------------------- Thesaurus variables
87: #
88: # %Keywords:
89: # A hash used by &keyword to determine if a word is considered a keyword.
90: # $thesaurus_db_file
91: # Scalar containing the full path to the thesaurus database.
92:
93: my %Keywords;
94: my $thesaurus_db_file;
95:
96: #
97: # Initialize values from language.tab, copyright.tab, filetypes.tab,
98: # thesaurus.tab, and filecategories.tab.
99: #
100: BEGIN {
101: # Variable initialization
102: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
103: #
104: unless ($readit) {
105: # ------------------------------------------------------------------- languages
106: {
107: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
108: '/language.tab';
109: if ( open(my $fh,"<$langtabfile") ) {
110: while (my $line = <$fh>) {
111: next if ($line=~/^\#/);
112: chomp($line);
113: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$line));
114: $language{$key}=$val.' - '.$enc;
115: if ($sup) {
116: $supported_language{$key}=$sup;
117: }
118: }
119: close($fh);
120: }
121: }
122: # ------------------------------------------------------------------ copyrights
123: {
124: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
125: '/copyright.tab';
126: if ( open (my $fh,"<$copyrightfile") ) {
127: while (my $line = <$fh>) {
128: next if ($line=~/^\#/);
129: chomp($line);
130: my ($key,$val)=(split(/\s+/,$line,2));
131: $cprtag{$key}=$val;
132: }
133: close($fh);
134: }
135: }
136: # ----------------------------------------------------------- source copyrights
137: {
138: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
139: '/source_copyright.tab';
140: if ( open (my $fh,"<$sourcecopyrightfile") ) {
141: while (my $line = <$fh>) {
142: next if ($line =~ /^\#/);
143: chomp($line);
144: my ($key,$val)=(split(/\s+/,$line,2));
145: $scprtag{$key}=$val;
146: }
147: close($fh);
148: }
149: }
150:
151: # -------------------------------------------------------------- domain designs
152:
153: my $filename;
154: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
155: opendir(DIR,$designdir);
156: while ($filename=readdir(DIR)) {
157: if ($filename!~/\.tab$/) { next; }
158: my ($domain)=($filename=~/^(\w+)\./);
159: {
160: my $designfile = $designdir.'/'.$filename;
161: if ( open (my $fh,"<$designfile") ) {
162: while (my $line = <$fh>) {
163: next if ($line =~ /^\#/);
164: chomp($line);
165: my ($key,$val)=(split(/\=/,$line));
166: if ($val) { $designhash{$domain.'.'.$key}=$val; }
167: }
168: close($fh);
169: }
170: }
171:
172: }
173: closedir(DIR);
174:
175:
176: # ------------------------------------------------------------- file categories
177: {
178: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
179: '/filecategories.tab';
180: if ( open (my $fh,"<$categoryfile") ) {
181: while (my $line = <$fh>) {
182: next if ($line =~ /^\#/);
183: chomp($line);
184: my ($extension,$category)=(split(/\s+/,$line,2));
185: push @{$category_extensions{lc($category)}},$extension;
186: }
187: close($fh);
188: }
189:
190: }
191: # ------------------------------------------------------------------ file types
192: {
193: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
194: '/filetypes.tab';
195: if ( open (my $fh,"<$typesfile") ) {
196: while (my $line = <$fh>) {
197: next if ($line =~ /^\#/);
198: chomp($line);
199: my ($ending,$emb,$mime,$descr)=split(/\s+/,$line,4);
200: if ($descr ne '') {
201: $fe{$ending}=lc($emb);
202: $fd{$ending}=$descr;
203: if ($mime ne 'unk') { $fm{$ending}=$mime; }
204: }
205: }
206: close($fh);
207: }
208: }
209: &Apache::lonnet::logthis(
210: "<font color=yellow>INFO: Read file types</font>");
211: $readit=1;
212: } # end of unless($readit)
213:
214: }
215:
216: ###############################################################
217: ## HTML and Javascript Helper Functions ##
218: ###############################################################
219:
220: =pod
221:
222: =head1 HTML and Javascript Functions
223:
224: =over 4
225:
226: =item * browser_and_searcher_javascript ()
227:
228: X<browsing, javascript>X<searching, javascript>Returns a string
229: containing javascript with two functions, C<openbrowser> and
230: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
231: tags.
232:
233: =item * openbrowser(formname,elementname,only,omit) [javascript]
234:
235: inputs: formname, elementname, only, omit
236:
237: formname and elementname indicate the name of the html form and name of
238: the element that the results of the browsing selection are to be placed in.
239:
240: Specifying 'only' will restrict the browser to displaying only files
241: with the given extension. Can be a comma separated list.
242:
243: Specifying 'omit' will restrict the browser to NOT displaying files
244: with the given extension. Can be a comma separated list.
245:
246: =item * opensearcher(formname, elementname) [javascript]
247:
248: Inputs: formname, elementname
249:
250: formname and elementname specify the name of the html form and the name
251: of the element the selection from the search results will be placed in.
252:
253: =cut
254:
255: sub browser_and_searcher_javascript {
256: my ($mode)=@_;
257: if (!defined($mode)) { $mode='edit'; }
258: my $resurl=&lastresurl();
259: return <<END;
260: // <!-- BEGIN LON-CAPA Internal
261: var editbrowser = null;
262: function openbrowser(formname,elementname,only,omit,titleelement) {
263: var url = '$resurl/?';
264: if (editbrowser == null) {
265: url += 'launch=1&';
266: }
267: url += 'catalogmode=interactive&';
268: url += 'mode=$mode&';
269: url += 'form=' + formname + '&';
270: if (only != null) {
271: url += 'only=' + only + '&';
272: } else {
273: url += 'only=&';
274: }
275: if (omit != null) {
276: url += 'omit=' + omit + '&';
277: } else {
278: url += 'omit=&';
279: }
280: if (titleelement != null) {
281: url += 'titleelement=' + titleelement + '&';
282: } else {
283: url += 'titleelement=&';
284: }
285: url += 'element=' + elementname + '';
286: var title = 'Browser';
287: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
288: options += ',width=700,height=600';
289: editbrowser = open(url,title,options,'1');
290: editbrowser.focus();
291: }
292: var editsearcher;
293: function opensearcher(formname,elementname,titleelement) {
294: var url = '/adm/searchcat?';
295: if (editsearcher == null) {
296: url += 'launch=1&';
297: }
298: url += 'catalogmode=interactive&';
299: url += 'mode=$mode&';
300: url += 'form=' + formname + '&';
301: if (titleelement != null) {
302: url += 'titleelement=' + titleelement + '&';
303: } else {
304: url += 'titleelement=&';
305: }
306: url += 'element=' + elementname + '';
307: var title = 'Search';
308: var options = 'scrollbars=1,resizable=1,menubar=0';
309: options += ',width=700,height=600';
310: editsearcher = open(url,title,options,'1');
311: editsearcher.focus();
312: }
313: // END LON-CAPA Internal -->
314: END
315: }
316:
317: sub lastresurl {
318: if ($env{'environment.lastresurl'}) {
319: return $env{'environment.lastresurl'}
320: } else {
321: return '/res';
322: }
323: }
324:
325: sub storeresurl {
326: my $resurl=&Apache::lonnet::clutter(shift);
327: unless ($resurl=~/^\/res/) { return 0; }
328: $resurl=~s/\/$//;
329: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
330: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
331: return 1;
332: }
333:
334: sub studentbrowser_javascript {
335: unless (
336: (($env{'request.course.id'}) &&
337: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
338: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
339: '/'.$env{'request.course.sec'})
340: ))
341: || ($env{'request.role'}=~/^(au|dc|su)/)
342: ) { return ''; }
343: return (<<'ENDSTDBRW');
344: <script type="text/javascript" language="Javascript" >
345: var stdeditbrowser;
346: function openstdbrowser(formname,uname,udom,roleflag) {
347: var url = '/adm/pickstudent?';
348: var filter;
349: eval('filter=document.'+formname+'.'+uname+'.value;');
350: if (filter != null) {
351: if (filter != '') {
352: url += 'filter='+filter+'&';
353: }
354: }
355: url += 'form=' + formname + '&unameelement='+uname+
356: '&udomelement='+udom;
357: if (roleflag) { url+="&roles=1"; }
358: var title = 'Student_Browser';
359: var options = 'scrollbars=1,resizable=1,menubar=0';
360: options += ',width=700,height=600';
361: stdeditbrowser = open(url,title,options,'1');
362: stdeditbrowser.focus();
363: }
364: </script>
365: ENDSTDBRW
366: }
367:
368: sub selectstudent_link {
369: my ($form,$unameele,$udomele)=@_;
370: if ($env{'request.course.id'}) {
371: if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
372: && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
373: '/'.$env{'request.course.sec'})) {
374: return '';
375: }
376: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
377: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
378: }
379: if ($env{'request.role'}=~/^(au|dc|su)/) {
380: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
381: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
382: }
383: return '';
384: }
385:
386: sub coursebrowser_javascript {
387: my ($domainfilter)=@_;
388: return (<<ENDSTDBRW);
389: <script type="text/javascript" language="Javascript" >
390: var stdeditbrowser;
391: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
392: var url = '/adm/pickcourse?';
393: var filter;
394: if (filter != null) {
395: if (filter != '') {
396: url += 'filter='+filter+'&';
397: }
398: }
399: var domainfilter='$domainfilter';
400: if (domainfilter != null) {
401: if (domainfilter != '') {
402: url += 'domainfilter='+domainfilter+'&';
403: }
404: }
405: url += 'form=' + formname + '&cnumelement='+uname+
406: '&cdomelement='+udom+
407: '&cnameelement='+desc;
408: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
409: url += '&roleelement='+extra_element;
410: if (domainfilter == null || domainfilter == '') {
411: url += '&domainfilter='+extra_element;
412: }
413: }
414: if (multflag !=null && multflag != '') {
415: url += '&multiple='+multflag;
416: }
417: var title = 'Course_Browser';
418: var options = 'scrollbars=1,resizable=1,menubar=0';
419: options += ',width=700,height=600';
420: stdeditbrowser = open(url,title,options,'1');
421: stdeditbrowser.focus();
422: }
423: </script>
424: ENDSTDBRW
425: }
426:
427: sub selectcourse_link {
428: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
429: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
430: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
431: }
432:
433: sub check_uncheck_jscript {
434: my $jscript = <<"ENDSCRT";
435: function checkAll(field) {
436: if (field.length > 0) {
437: for (i = 0; i < field.length; i++) {
438: field[i].checked = true ;
439: }
440: } else {
441: field.checked = true
442: }
443: }
444:
445: function uncheckAll(field) {
446: if (field.length > 0) {
447: for (i = 0; i < field.length; i++) {
448: field[i].checked = false ;
449: } } else {
450: field.checked = false ;
451: }
452: }
453: ENDSCRT
454: return $jscript;
455: }
456:
457:
458: =pod
459:
460: =item * linked_select_forms(...)
461:
462: linked_select_forms returns a string containing a <script></script> block
463: and html for two <select> menus. The select menus will be linked in that
464: changing the value of the first menu will result in new values being placed
465: in the second menu. The values in the select menu will appear in alphabetical
466: order.
467:
468: linked_select_forms takes the following ordered inputs:
469:
470: =over 4
471:
472: =item * $formname, the name of the <form> tag
473:
474: =item * $middletext, the text which appears between the <select> tags
475:
476: =item * $firstdefault, the default value for the first menu
477:
478: =item * $firstselectname, the name of the first <select> tag
479:
480: =item * $secondselectname, the name of the second <select> tag
481:
482: =item * $hashref, a reference to a hash containing the data for the menus.
483:
484: =back
485:
486: Below is an example of such a hash. Only the 'text', 'default', and
487: 'select2' keys must appear as stated. keys(%menu) are the possible
488: values for the first select menu. The text that coincides with the
489: first menu value is given in $menu{$choice1}->{'text'}. The values
490: and text for the second menu are given in the hash pointed to by
491: $menu{$choice1}->{'select2'}.
492:
493: my %menu = ( A1 => { text =>"Choice A1" ,
494: default => "B3",
495: select2 => {
496: B1 => "Choice B1",
497: B2 => "Choice B2",
498: B3 => "Choice B3",
499: B4 => "Choice B4"
500: }
501: },
502: A2 => { text =>"Choice A2" ,
503: default => "C2",
504: select2 => {
505: C1 => "Choice C1",
506: C2 => "Choice C2",
507: C3 => "Choice C3"
508: }
509: },
510: A3 => { text =>"Choice A3" ,
511: default => "D6",
512: select2 => {
513: D1 => "Choice D1",
514: D2 => "Choice D2",
515: D3 => "Choice D3",
516: D4 => "Choice D4",
517: D5 => "Choice D5",
518: D6 => "Choice D6",
519: D7 => "Choice D7"
520: }
521: }
522: );
523:
524: =cut
525:
526: sub linked_select_forms {
527: my ($formname,
528: $middletext,
529: $firstdefault,
530: $firstselectname,
531: $secondselectname,
532: $hashref
533: ) = @_;
534: my $second = "document.$formname.$secondselectname";
535: my $first = "document.$formname.$firstselectname";
536: # output the javascript to do the changing
537: my $result = '';
538: $result.="<script type=\"text/javascript\">\n";
539: $result.="var select2data = new Object();\n";
540: $" = '","';
541: my $debug = '';
542: foreach my $s1 (sort(keys(%$hashref))) {
543: $result.="select2data.d_$s1 = new Object();\n";
544: $result.="select2data.d_$s1.def = new String('".
545: $hashref->{$s1}->{'default'}."');\n";
546: $result.="select2data.d_$s1.values = new Array(";
547: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
548: $result.="\"@s2values\");\n";
549: $result.="select2data.d_$s1.texts = new Array(";
550: my @s2texts;
551: foreach my $value (@s2values) {
552: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
553: }
554: $result.="\"@s2texts\");\n";
555: }
556: $"=' ';
557: $result.= <<"END";
558:
559: function select1_changed() {
560: // Determine new choice
561: var newvalue = "d_" + $first.value;
562: // update select2
563: var values = select2data[newvalue].values;
564: var texts = select2data[newvalue].texts;
565: var select2def = select2data[newvalue].def;
566: var i;
567: // out with the old
568: for (i = 0; i < $second.options.length; i++) {
569: $second.options[i] = null;
570: }
571: // in with the nuclear
572: for (i=0;i<values.length; i++) {
573: $second.options[i] = new Option(values[i]);
574: $second.options[i].value = values[i];
575: $second.options[i].text = texts[i];
576: if (values[i] == select2def) {
577: $second.options[i].selected = true;
578: }
579: }
580: }
581: </script>
582: END
583: # output the initial values for the selection lists
584: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
585: foreach my $value (sort(keys(%$hashref))) {
586: $result.=" <option value=\"$value\" ";
587: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
588: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
589: }
590: $result .= "</select>\n";
591: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
592: $result .= $middletext;
593: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
594: my $seconddefault = $hashref->{$firstdefault}->{'default'};
595: foreach my $value (sort(keys(%select2))) {
596: $result.=" <option value=\"$value\" ";
597: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
598: $result.=">".&mt($select2{$value})."</option>\n";
599: }
600: $result .= "</select>\n";
601: # return $debug;
602: return $result;
603: } # end of sub linked_select_forms {
604:
605: =pod
606:
607: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
608:
609: Returns a string corresponding to an HTML link to the given help
610: $topic, where $topic corresponds to the name of a .tex file in
611: /home/httpd/html/adm/help/tex, with underscores replaced by
612: spaces.
613:
614: $text will optionally be linked to the same topic, allowing you to
615: link text in addition to the graphic. If you do not want to link
616: text, but wish to specify one of the later parameters, pass an
617: empty string.
618:
619: $stayOnPage is a value that will be interpreted as a boolean. If true,
620: the link will not open a new window. If false, the link will open
621: a new window using Javascript. (Default is false.)
622:
623: $width and $height are optional numerical parameters that will
624: override the width and height of the popped up window, which may
625: be useful for certain help topics with big pictures included.
626:
627: =cut
628:
629: sub help_open_topic {
630: my ($topic, $text, $stayOnPage, $width, $height) = @_;
631: $text = "" if (not defined $text);
632: $stayOnPage = 0 if (not defined $stayOnPage);
633: if ($env{'browser.interface'} eq 'textual' ||
634: $env{'environment.remote'} eq 'off' ) {
635: $stayOnPage=1;
636: }
637: $width = 350 if (not defined $width);
638: $height = 400 if (not defined $height);
639: my $filename = $topic;
640: $filename =~ s/ /_/g;
641:
642: my $template = "";
643: my $link;
644:
645: $topic=~s/\W/\_/g;
646:
647: if (!$stayOnPage)
648: {
649: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
650: }
651: else
652: {
653: $link = "/adm/help/${filename}.hlp";
654: }
655:
656: # Add the text
657: if ($text ne "")
658: {
659: $template .=
660: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
661: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
662: }
663:
664: # Add the graphic
665: my $title = &mt('Online Help');
666: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
667: $template .= <<"ENDTEMPLATE";
668: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
669: ENDTEMPLATE
670: if ($text ne '') { $template.='</td></tr></table>' };
671: return $template;
672:
673: }
674:
675: # This is a quicky function for Latex cheatsheet editing, since it
676: # appears in at least four places
677: sub helpLatexCheatsheet {
678: my $other = shift;
679: my $addOther = '';
680: if ($other) {
681: $addOther = Apache::loncommon::help_open_topic($other, shift,
682: undef, undef, 600) .
683: '</td><td>';
684: }
685: return '<table><tr><td>'.
686: $addOther .
687: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
688: undef,undef,600)
689: .'</td><td>'.
690: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
691: undef,undef,600)
692: .'</td></tr></table>';
693: }
694:
695: sub help_open_menu {
696: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
697: $text = "" if (not defined $text);
698: $stayOnPage = 0 if (not defined $stayOnPage);
699: if ($env{'browser.interface'} eq 'textual' ||
700: $env{'environment.remote'} eq 'off' ) {
701: $stayOnPage=1;
702: }
703: $width = 620 if (not defined $width);
704: $height = 600 if (not defined $height);
705: my $link='';
706: my $title = &mt('Get help');
707: my $origurl = $ENV{'REQUEST_URI'};
708: $origurl=~s|^/~|/priv/|;
709: my $timestamp = time;
710: foreach my $datum (\$color,\$function,\$topic,\$component_help,\$faq,
711: \$bug,\$origurl) {
712: $$datum = &Apache::lonnet::escape($$datum);
713: }
714: if (!$stayOnPage) {
715: $link = "javascript:helpMenu('open')";
716: } else {
717: $link = "javascript:helpMenu('display')";
718: }
719: 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";
720: 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";
721: my $template;
722: if ($text ne "") {
723: $template .=
724: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
725: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
726: }
727: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
728: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
729: my $start_page =
730: &Apache::loncommon::start_page('Help Menu', undef,
731: {'frameset' => 1,
732: 'js_ready' => 1,
733: 'add_entries' => {
734: 'border' => '0',
735: 'rows' => "105,*",},});
736: my $end_page =
737: &Apache::loncommon::end_page({'frameset' => 1,
738: 'js_ready' => 1,});
739:
740: $template .= <<"ENDTEMPLATE";
741: <script type="text/javascript">
742: // <!-- BEGIN LON-CAPA Internal
743: // <![CDATA[
744: function helpMenu(target) {
745: var caller = this;
746: if (target == 'open') {
747: var newWindow = null;
748: try {
749: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
750: }
751: catch(error) {
752: writeHelp(caller);
753: return;
754: }
755: if (newWindow) {
756: caller = newWindow;
757: }
758: }
759: writeHelp(caller);
760: return;
761: }
762: function writeHelp(caller) {
763: caller.document.writeln('$start_page<frame name="bannerframe" src="$banner_link" /><frame name="bodyframe" src="$details_link" /> $end_page')
764: caller.document.close()
765: caller.focus()
766: }
767: // ]]>
768: // END LON-CAPA Internal -->
769: </script>
770: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
771: ENDTEMPLATE
772: if ($component_help) {
773: if (!$text) {
774: $template=&help_open_topic($component_help,undef,$stayOnPage,
775: $width,$height).' '.$template;
776: } else {
777: my $help_text;
778: $help_text=&Apache::lonnet::unescape($topic);
779: $template='<table><tr><td>'.
780: &help_open_topic($component_help,$help_text,$stayOnPage,
781: $width,$height).'</td><td>'.$template.
782: '</td></tr></table>';
783: }
784: }
785: if ($text ne '') { $template.='</td></tr></table>' };
786: return $template;
787: }
788:
789: sub help_open_bug {
790: my ($topic, $text, $stayOnPage, $width, $height) = @_;
791: unless ($env{'user.adv'}) { return ''; }
792: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
793: $text = "" if (not defined $text);
794: $stayOnPage = 0 if (not defined $stayOnPage);
795: if ($env{'browser.interface'} eq 'textual' ||
796: $env{'environment.remote'} eq 'off' ) {
797: $stayOnPage=1;
798: }
799: $width = 600 if (not defined $width);
800: $height = 600 if (not defined $height);
801:
802: $topic=~s/\W+/\+/g;
803: my $link='';
804: my $template='';
805: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
806: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
807: if (!$stayOnPage)
808: {
809: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
810: }
811: else
812: {
813: $link = $url;
814: }
815: # Add the text
816: if ($text ne "")
817: {
818: $template .=
819: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
820: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
821: }
822:
823: # Add the graphic
824: my $title = &mt('Report a Bug');
825: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
826: $template .= <<"ENDTEMPLATE";
827: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
828: ENDTEMPLATE
829: if ($text ne '') { $template.='</td></tr></table>' };
830: return $template;
831:
832: }
833:
834: sub help_open_faq {
835: my ($topic, $text, $stayOnPage, $width, $height) = @_;
836: unless ($env{'user.adv'}) { return ''; }
837: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
838: $text = "" if (not defined $text);
839: $stayOnPage = 0 if (not defined $stayOnPage);
840: if ($env{'browser.interface'} eq 'textual' ||
841: $env{'environment.remote'} eq 'off' ) {
842: $stayOnPage=1;
843: }
844: $width = 350 if (not defined $width);
845: $height = 400 if (not defined $height);
846:
847: $topic=~s/\W+/\+/g;
848: my $link='';
849: my $template='';
850: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
851: if (!$stayOnPage)
852: {
853: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
854: }
855: else
856: {
857: $link = $url;
858: }
859:
860: # Add the text
861: if ($text ne "")
862: {
863: $template .=
864: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
865: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
866: }
867:
868: # Add the graphic
869: my $title = &mt('View the FAQ');
870: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
871: $template .= <<"ENDTEMPLATE";
872: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
873: ENDTEMPLATE
874: if ($text ne '') { $template.='</td></tr></table>' };
875: return $template;
876:
877: }
878:
879: ###############################################################
880: ###############################################################
881:
882: =pod
883:
884: =item * change_content_javascript():
885:
886: This and the next function allow you to create small sections of an
887: otherwise static HTML page that you can update on the fly with
888: Javascript, even in Netscape 4.
889:
890: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
891: must be written to the HTML page once. It will prove the Javascript
892: function "change(name, content)". Calling the change function with the
893: name of the section
894: you want to update, matching the name passed to C<changable_area>, and
895: the new content you want to put in there, will put the content into
896: that area.
897:
898: B<Note>: Netscape 4 only reserves enough space for the changable area
899: to contain room for the original contents. You need to "make space"
900: for whatever changes you wish to make, and be B<sure> to check your
901: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
902: it's adequate for updating a one-line status display, but little more.
903: This script will set the space to 100% width, so you only need to
904: worry about height in Netscape 4.
905:
906: Modern browsers are much less limiting, and if you can commit to the
907: user not using Netscape 4, this feature may be used freely with
908: pretty much any HTML.
909:
910: =cut
911:
912: sub change_content_javascript {
913: # If we're on Netscape 4, we need to use Layer-based code
914: if ($env{'browser.type'} eq 'netscape' &&
915: $env{'browser.version'} =~ /^4\./) {
916: return (<<NETSCAPE4);
917: function change(name, content) {
918: doc = document.layers[name+"___escape"].layers[0].document;
919: doc.open();
920: doc.write(content);
921: doc.close();
922: }
923: NETSCAPE4
924: } else {
925: # Otherwise, we need to use semi-standards-compliant code
926: # (technically, "innerHTML" isn't standard but the equivalent
927: # is really scary, and every useful browser supports it
928: return (<<DOMBASED);
929: function change(name, content) {
930: element = document.getElementById(name);
931: element.innerHTML = content;
932: }
933: DOMBASED
934: }
935: }
936:
937: =pod
938:
939: =item * changable_area($name, $origContent):
940:
941: This provides a "changable area" that can be modified on the fly via
942: the Javascript code provided in C<change_content_javascript>. $name is
943: the name you will use to reference the area later; do not repeat the
944: same name on a given HTML page more then once. $origContent is what
945: the area will originally contain, which can be left blank.
946:
947: =cut
948:
949: sub changable_area {
950: my ($name, $origContent) = @_;
951:
952: if ($env{'browser.type'} eq 'netscape' &&
953: $env{'browser.version'} =~ /^4\./) {
954: # If this is netscape 4, we need to use the Layer tag
955: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
956: } else {
957: return "<span id='$name'>$origContent</span>";
958: }
959: }
960:
961: =pod
962:
963: =back
964:
965: =head1 Excel and CSV file utility routines
966:
967: =over 4
968:
969: =cut
970:
971: ###############################################################
972: ###############################################################
973:
974: =pod
975:
976: =item * csv_translate($text)
977:
978: Translate $text to allow it to be output as a 'comma separated values'
979: format.
980:
981: =cut
982:
983: ###############################################################
984: ###############################################################
985: sub csv_translate {
986: my $text = shift;
987: $text =~ s/\"/\"\"/g;
988: $text =~ s/\n/ /g;
989: return $text;
990: }
991:
992: ###############################################################
993: ###############################################################
994:
995: =pod
996:
997: =item * define_excel_formats
998:
999: Define some commonly used Excel cell formats.
1000:
1001: Currently supported formats:
1002:
1003: =over 4
1004:
1005: =item header
1006:
1007: =item bold
1008:
1009: =item h1
1010:
1011: =item h2
1012:
1013: =item h3
1014:
1015: =item h4
1016:
1017: =item i
1018:
1019: =item date
1020:
1021: =back
1022:
1023: Inputs: $workbook
1024:
1025: Returns: $format, a hash reference.
1026:
1027: =cut
1028:
1029: ###############################################################
1030: ###############################################################
1031: sub define_excel_formats {
1032: my ($workbook) = @_;
1033: my $format;
1034: $format->{'header'} = $workbook->add_format(bold => 1,
1035: bottom => 1,
1036: align => 'center');
1037: $format->{'bold'} = $workbook->add_format(bold=>1);
1038: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1039: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1040: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1041: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1042: $format->{'i'} = $workbook->add_format(italic=>1);
1043: $format->{'date'} = $workbook->add_format(num_format=>
1044: 'mm/dd/yyyy hh:mm:ss');
1045: return $format;
1046: }
1047:
1048: ###############################################################
1049: ###############################################################
1050:
1051: =pod
1052:
1053: =item * create_workbook
1054:
1055: Create an Excel worksheet. If it fails, output message on the
1056: request object and return undefs.
1057:
1058: Inputs: Apache request object
1059:
1060: Returns (undef) on failure,
1061: Excel worksheet object, scalar with filename, and formats
1062: from &Apache::loncommon::define_excel_formats on success
1063:
1064: =cut
1065:
1066: ###############################################################
1067: ###############################################################
1068: sub create_workbook {
1069: my ($r) = @_;
1070: #
1071: # Create the excel spreadsheet
1072: my $filename = '/prtspool/'.
1073: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1074: time.'_'.rand(1000000000).'.xls';
1075: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1076: if (! defined($workbook)) {
1077: $r->log_error("Error creating excel spreadsheet $filename: $!");
1078: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1079: "This error has been logged. ".
1080: "Please alert your LON-CAPA administrator").
1081: '</p>');
1082: return (undef);
1083: }
1084: #
1085: $workbook->set_tempdir('/home/httpd/perl/tmp');
1086: #
1087: my $format = &Apache::loncommon::define_excel_formats($workbook);
1088: return ($workbook,$filename,$format);
1089: }
1090:
1091: ###############################################################
1092: ###############################################################
1093:
1094: =pod
1095:
1096: =item * create_text_file
1097:
1098: Create a file to write to and eventually make available to the usre.
1099: If file creation fails, outputs an error message on the request object and
1100: return undefs.
1101:
1102: Inputs: Apache request object, and file suffix
1103:
1104: Returns (undef) on failure,
1105: Filehandle and filename on success.
1106:
1107: =cut
1108:
1109: ###############################################################
1110: ###############################################################
1111: sub create_text_file {
1112: my ($r,$suffix) = @_;
1113: if (! defined($suffix)) { $suffix = 'txt'; };
1114: my $fh;
1115: my $filename = '/prtspool/'.
1116: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1117: time.'_'.rand(1000000000).'.'.$suffix;
1118: $fh = Apache::File->new('>/home/httpd'.$filename);
1119: if (! defined($fh)) {
1120: $r->log_error("Couldn't open $filename for output $!");
1121: $r->print("Problems occured in creating the output file. ".
1122: "This error has been logged. ".
1123: "Please alert your LON-CAPA administrator.");
1124: }
1125: return ($fh,$filename)
1126: }
1127:
1128:
1129: =pod
1130:
1131: =back
1132:
1133: =cut
1134:
1135: ###############################################################
1136: ## Home server <option> list generating code ##
1137: ###############################################################
1138:
1139: =pod
1140:
1141: =head1 Home Server option list generating code
1142:
1143: =over 4
1144:
1145: =item * get_domains()
1146:
1147: Returns an array containing each of the domains listed in the hosts.tab
1148: file.
1149:
1150: =cut
1151:
1152: #-------------------------------------------
1153: sub get_domains {
1154: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1155: my @domains;
1156: my %seen;
1157: foreach my $dom (sort(values(%Apache::lonnet::hostdom))) {
1158: push(@domains,$dom) unless $seen{$dom}++;
1159: }
1160: return @domains;
1161: }
1162:
1163: # ------------------------------------------
1164:
1165: sub domain_select {
1166: my ($name,$value,$multiple)=@_;
1167: my %domains=map {
1168: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1169: } &get_domains;
1170: if ($multiple) {
1171: $domains{''}=&mt('Any domain');
1172: return &multiple_select_form($name,$value,4,\%domains);
1173: } else {
1174: return &select_form($name,$value,%domains);
1175: }
1176: }
1177:
1178: #-------------------------------------------
1179:
1180: =pod
1181:
1182: =item * multiple_select_form($name,$value,$size,$hash,$order)
1183:
1184: Returns a string containing a <select> element int multiple mode
1185:
1186:
1187: Args:
1188: $name - name of the <select> element
1189: $value - sclara or array ref of values that should already be selected
1190: $size - number of rows long the select element is
1191: $hash - the elements should be 'option' => 'shown text'
1192: (shown text should already have been &mt())
1193: $order - (optional) array ref of the order to show the elments in
1194:
1195: =cut
1196:
1197: #-------------------------------------------
1198: sub multiple_select_form {
1199: my ($name,$value,$size,$hash,$order)=@_;
1200: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1201: my $output='';
1202: if (! defined($size)) {
1203: $size = 4;
1204: if (scalar(keys(%$hash))<4) {
1205: $size = scalar(keys(%$hash));
1206: }
1207: }
1208: $output.="\n<select name='$name' size='$size' multiple='1'>";
1209: my @order = ref($order) ? @$order
1210: : sort(keys(%$hash));
1211: foreach my $key (@order) {
1212: $output.='<option value="'.&HTML::Entities::encode($key,'"<>&').'" ';
1213: $output.='selected="selected" ' if ($selected{$key});
1214: $output.='>'.$hash->{$key}."</option>\n";
1215: }
1216: $output.="</select>\n";
1217: return $output;
1218: }
1219:
1220: #-------------------------------------------
1221:
1222: =pod
1223:
1224: =item * select_form($defdom,$name,%hash)
1225:
1226: Returns a string containing a <select name='$name' size='1'> form to
1227: allow a user to select options from a hash option_name => displayed text.
1228: See lonrights.pm for an example invocation and use.
1229:
1230: =cut
1231:
1232: #-------------------------------------------
1233: sub select_form {
1234: my ($def,$name,%hash) = @_;
1235: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1236: my @keys;
1237: if (exists($hash{'select_form_order'})) {
1238: @keys=@{$hash{'select_form_order'}};
1239: } else {
1240: @keys=sort(keys(%hash));
1241: }
1242: foreach my $key (@keys) {
1243: $selectform.=
1244: '<option value="'.&HTML::Entities::encode($key,'"<>&').'" '.
1245: ($key eq $def ? 'selected="selected" ' : '').
1246: ">".&mt($hash{$key})."</option>\n";
1247: }
1248: $selectform.="</select>";
1249: return $selectform;
1250: }
1251:
1252: sub gradeleveldescription {
1253: my $gradelevel=shift;
1254: my %gradelevels=(0 => 'Not specified',
1255: 1 => 'Grade 1',
1256: 2 => 'Grade 2',
1257: 3 => 'Grade 3',
1258: 4 => 'Grade 4',
1259: 5 => 'Grade 5',
1260: 6 => 'Grade 6',
1261: 7 => 'Grade 7',
1262: 8 => 'Grade 8',
1263: 9 => 'Grade 9',
1264: 10 => 'Grade 10',
1265: 11 => 'Grade 11',
1266: 12 => 'Grade 12',
1267: 13 => 'Grade 13',
1268: 14 => '100 Level',
1269: 15 => '200 Level',
1270: 16 => '300 Level',
1271: 17 => '400 Level',
1272: 18 => 'Graduate Level');
1273: return &mt($gradelevels{$gradelevel});
1274: }
1275:
1276: sub select_level_form {
1277: my ($deflevel,$name)=@_;
1278: unless ($deflevel) { $deflevel=0; }
1279: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1280: for (my $i=0; $i<=18; $i++) {
1281: $selectform.="<option value=\"$i\" ".
1282: ($i==$deflevel ? 'selected="selected" ' : '').
1283: ">".&gradeleveldescription($i)."</option>\n";
1284: }
1285: $selectform.="</select>";
1286: return $selectform;
1287: }
1288:
1289: #-------------------------------------------
1290:
1291: =pod
1292:
1293: =item * select_dom_form($defdom,$name,$includeempty)
1294:
1295: Returns a string containing a <select name='$name' size='1'> form to
1296: allow a user to select the domain to preform an operation in.
1297: See loncreateuser.pm for an example invocation and use.
1298:
1299: If the $includeempty flag is set, it also includes an empty choice ("no domain
1300: selected");
1301:
1302: =cut
1303:
1304: #-------------------------------------------
1305: sub select_dom_form {
1306: my ($defdom,$name,$includeempty) = @_;
1307: my @domains = get_domains();
1308: if ($includeempty) { @domains=('',@domains); }
1309: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1310: foreach my $dom (@domains) {
1311: $selectdomain.="<option value=\"$dom\" ".
1312: ($dom eq $defdom ? 'selected="selected" ' : '').
1313: ">$dom</option>\n";
1314: }
1315: $selectdomain.="</select>";
1316: return $selectdomain;
1317: }
1318:
1319: #-------------------------------------------
1320:
1321: =pod
1322:
1323: =item * get_library_servers($domain)
1324:
1325: Returns a hash which contains keys like '103l3' and values like
1326: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1327: given $domain.
1328:
1329: =cut
1330:
1331: #-------------------------------------------
1332: sub get_library_servers {
1333: my $domain = shift;
1334: my %library_servers;
1335: foreach my $hostid (keys(%Apache::lonnet::libserv)) {
1336: if ($Apache::lonnet::hostdom{$hostid} eq $domain) {
1337: $library_servers{$hostid} = $Apache::lonnet::hostname{$hostid};
1338: }
1339: }
1340: return %library_servers;
1341: }
1342:
1343: #-------------------------------------------
1344:
1345: =pod
1346:
1347: =item * home_server_option_list($domain)
1348:
1349: returns a string which contains an <option> list to be used in a
1350: <select> form input. See loncreateuser.pm for an example.
1351:
1352: =cut
1353:
1354: #-------------------------------------------
1355: sub home_server_option_list {
1356: my $domain = shift;
1357: my %servers = &get_library_servers($domain);
1358: my $result = '';
1359: foreach my $hostid (sort(keys(%servers))) {
1360: $result.=
1361: '<option value="'.$hostid.'">'.
1362: $hostid.' '.$servers{$hostid}."</option>\n";
1363: }
1364: return $result;
1365: }
1366:
1367: =pod
1368:
1369: =back
1370:
1371: =cut
1372:
1373: ###############################################################
1374: ## Decoding User Agent ##
1375: ###############################################################
1376:
1377: =pod
1378:
1379: =head1 Decoding the User Agent
1380:
1381: =over 4
1382:
1383: =item * &decode_user_agent()
1384:
1385: Inputs: $r
1386:
1387: Outputs:
1388:
1389: =over 4
1390:
1391: =item * $httpbrowser
1392:
1393: =item * $clientbrowser
1394:
1395: =item * $clientversion
1396:
1397: =item * $clientmathml
1398:
1399: =item * $clientunicode
1400:
1401: =item * $clientos
1402:
1403: =back
1404:
1405: =back
1406:
1407: =cut
1408:
1409: ###############################################################
1410: ###############################################################
1411: sub decode_user_agent {
1412: my ($r)=@_;
1413: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1414: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1415: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1416: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1417: my $clientbrowser='unknown';
1418: my $clientversion='0';
1419: my $clientmathml='';
1420: my $clientunicode='0';
1421: for (my $i=0;$i<=$#browsertype;$i++) {
1422: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1423: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1424: $clientbrowser=$bname;
1425: $httpbrowser=~/$vreg/i;
1426: $clientversion=$1;
1427: $clientmathml=($clientversion>=$minv);
1428: $clientunicode=($clientversion>=$univ);
1429: }
1430: }
1431: my $clientos='unknown';
1432: if (($httpbrowser=~/linux/i) ||
1433: ($httpbrowser=~/unix/i) ||
1434: ($httpbrowser=~/ux/i) ||
1435: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1436: if (($httpbrowser=~/vax/i) ||
1437: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1438: if ($httpbrowser=~/next/i) { $clientos='next'; }
1439: if (($httpbrowser=~/mac/i) ||
1440: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1441: if ($httpbrowser=~/win/i) { $clientos='win'; }
1442: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1443: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1444: $clientunicode,$clientos,);
1445: }
1446:
1447: ###############################################################
1448: ## Authentication changing form generation subroutines ##
1449: ###############################################################
1450: ##
1451: ## All of the authform_xxxxxxx subroutines take their inputs in a
1452: ## hash, and have reasonable default values.
1453: ##
1454: ## formname = the name given in the <form> tag.
1455: #-------------------------------------------
1456:
1457: =pod
1458:
1459: =head1 Authentication Routines
1460:
1461: =over 4
1462:
1463: =item * authform_xxxxxx
1464:
1465: The authform_xxxxxx subroutines provide javascript and html forms which
1466: handle some of the conveniences required for authentication forms.
1467: This is not an optimal method, but it works.
1468:
1469: See loncreateuser.pm for invocation and use examples.
1470:
1471: =over 4
1472:
1473: =item * authform_header
1474:
1475: =item * authform_authorwarning
1476:
1477: =item * authform_nochange
1478:
1479: =item * authform_kerberos
1480:
1481: =item * authform_internal
1482:
1483: =item * authform_filesystem
1484:
1485: =back
1486:
1487: =back
1488:
1489: =cut
1490:
1491: #-------------------------------------------
1492: sub authform_header{
1493: my %in = (
1494: formname => 'cu',
1495: kerb_def_dom => '',
1496: @_,
1497: );
1498: $in{'formname'} = 'document.' . $in{'formname'};
1499: my $result='';
1500:
1501: #---------------------------------------------- Code for upper case translation
1502: my $Javascript_toUpperCase;
1503: unless ($in{kerb_def_dom}) {
1504: $Javascript_toUpperCase =<<"END";
1505: switch (choice) {
1506: case 'krb': currentform.elements[choicearg].value =
1507: currentform.elements[choicearg].value.toUpperCase();
1508: break;
1509: default:
1510: }
1511: END
1512: } else {
1513: $Javascript_toUpperCase = "";
1514: }
1515:
1516: my $radioval = "'nochange'";
1517: if (exists($in{'curr_authtype'}) &&
1518: defined($in{'curr_authtype'}) &&
1519: $in{'curr_authtype'} ne '') {
1520: $radioval = "'$in{'curr_authtype'}arg'";
1521: }
1522: my $argfield = 'null';
1523: if ( grep/^mode$/,(keys %in) ) {
1524: if ($in{'mode'} eq 'modifycourse') {
1525: if ( grep/^curr_authtype$/,(keys %in) ) {
1526: $radioval = "'$in{'curr_authtype'}'";
1527: }
1528: if ( grep/^curr_autharg$/,(keys %in) ) {
1529: unless ($in{'curr_autharg'} eq '') {
1530: $argfield = "'$in{'curr_autharg'}'";
1531: }
1532: }
1533: }
1534: }
1535:
1536: $result.=<<"END";
1537: var current = new Object();
1538: current.radiovalue = $radioval;
1539: current.argfield = $argfield;
1540:
1541: function changed_radio(choice,currentform) {
1542: var choicearg = choice + 'arg';
1543: // If a radio button in changed, we need to change the argfield
1544: if (current.radiovalue != choice) {
1545: current.radiovalue = choice;
1546: if (current.argfield != null) {
1547: currentform.elements[current.argfield].value = '';
1548: }
1549: if (choice == 'nochange') {
1550: current.argfield = null;
1551: } else {
1552: current.argfield = choicearg;
1553: switch(choice) {
1554: case 'krb':
1555: currentform.elements[current.argfield].value =
1556: "$in{'kerb_def_dom'}";
1557: break;
1558: default:
1559: break;
1560: }
1561: }
1562: }
1563: return;
1564: }
1565:
1566: function changed_text(choice,currentform) {
1567: var choicearg = choice + 'arg';
1568: if (currentform.elements[choicearg].value !='') {
1569: $Javascript_toUpperCase
1570: // clear old field
1571: if ((current.argfield != choicearg) && (current.argfield != null)) {
1572: currentform.elements[current.argfield].value = '';
1573: }
1574: current.argfield = choicearg;
1575: }
1576: set_auth_radio_buttons(choice,currentform);
1577: return;
1578: }
1579:
1580: function set_auth_radio_buttons(newvalue,currentform) {
1581: var i=0;
1582: while (i < currentform.login.length) {
1583: if (currentform.login[i].value == newvalue) { break; }
1584: i++;
1585: }
1586: if (i == currentform.login.length) {
1587: return;
1588: }
1589: current.radiovalue = newvalue;
1590: currentform.login[i].checked = true;
1591: return;
1592: }
1593: END
1594: return $result;
1595: }
1596:
1597: sub authform_authorwarning{
1598: my $result='';
1599: $result='<i>'.
1600: &mt('As a general rule, only authors or co-authors should be '.
1601: 'filesystem authenticated '.
1602: '(which allows access to the server filesystem).')."</i>\n";
1603: return $result;
1604: }
1605:
1606: sub authform_nochange{
1607: my %in = (
1608: formname => 'document.cu',
1609: kerb_def_dom => 'MSU.EDU',
1610: @_,
1611: );
1612: my $result = '<label>'.&mt('[_1] Do not change login data',
1613: '<input type="radio" name="login" value="nochange" '.
1614: 'checked="checked" onclick="'.
1615: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1616: '</label>';
1617: return $result;
1618: }
1619:
1620: sub authform_kerberos{
1621: my %in = (
1622: formname => 'document.cu',
1623: kerb_def_dom => 'MSU.EDU',
1624: kerb_def_auth => 'krb4',
1625: @_,
1626: );
1627: my ($check4,$check5,$krbarg);
1628: if ($in{'kerb_def_auth'} eq 'krb5') {
1629: $check5 = " checked=\"on\"";
1630: } else {
1631: $check4 = " checked=\"on\"";
1632: }
1633: $krbarg = $in{'kerb_def_dom'};
1634:
1635: my $krbcheck = "";
1636: if ( grep/^curr_authtype$/,(keys %in) ) {
1637: if ($in{'curr_authtype'} =~ m/^krb/) {
1638: $krbcheck = " checked=\"on\"";
1639: if ( grep/^curr_autharg$/,(keys %in) ) {
1640: $krbarg = $in{'curr_autharg'};
1641: }
1642: }
1643: }
1644:
1645: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1646: my $result .= &mt
1647: ('[_1] Kerberos authenticated with domain [_2] '.
1648: '[_3] Version 4 [_4] Version 5 [_5]',
1649: '<label><input type="radio" name="login" value="krb" '.
1650: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1651: '</label><input type="text" size="10" name="krbarg" '.
1652: 'value="'.$krbarg.'" '.
1653: 'onchange="'.$jscall.'" />',
1654: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1655: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1656: '</label>');
1657: return $result;
1658: }
1659:
1660: sub authform_internal{
1661: my %args = (
1662: formname => 'document.cu',
1663: kerb_def_dom => 'MSU.EDU',
1664: @_,
1665: );
1666:
1667: my $intcheck = "";
1668: my $intarg = 'value=""';
1669: if ( grep/^curr_authtype$/,(keys %args) ) {
1670: if ($args{'curr_authtype'} eq 'int') {
1671: $intcheck = " checked=\"on\"";
1672: if ( grep/^curr_autharg$/,(keys %args) ) {
1673: $intarg = "value=\"$args{'curr_autharg'}\"";
1674: }
1675: }
1676: }
1677:
1678: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1679: my $result.=&mt
1680: ('[_1] Internally authenticated (with initial password [_2])',
1681: '<label><input type="radio" name="login" value="int" '.$intcheck.
1682: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1683: '</label><input type="text" size="10" name="intarg" '.$intarg.
1684: ' onchange="'.$jscall.'" />');
1685: return $result;
1686: }
1687:
1688: sub authform_local{
1689: my %in = (
1690: formname => 'document.cu',
1691: kerb_def_dom => 'MSU.EDU',
1692: @_,
1693: );
1694:
1695: my $loccheck = "";
1696: my $locarg = 'value=""';
1697: if ( grep/^curr_authtype$/,(keys %in) ) {
1698: if ($in{'curr_authtype'} eq 'loc') {
1699: $loccheck = " checked=\"on\"";
1700: if ( grep/^curr_autharg$/,(keys %in) ) {
1701: $locarg = "value=\"$in{'curr_autharg'}\"";
1702: }
1703: }
1704: }
1705:
1706: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1707: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1708: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1709: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1710: '</label><input type="text" size="10" name="locarg" '.$locarg.
1711: ' onchange="'.$jscall.'" />');
1712: return $result;
1713: }
1714:
1715: sub authform_filesystem{
1716: my %in = (
1717: formname => 'document.cu',
1718: kerb_def_dom => 'MSU.EDU',
1719: @_,
1720: );
1721: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1722: my $result.= &mt
1723: ('[_1] Filesystem Authenticated (with initial password [_2])',
1724: '<label><input type="radio" name="login" value="fsys" '.
1725: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1726: '</label><input type="text" size="10" name="fsysarg" value="" '.
1727: 'onchange="'.$jscall.'" />');
1728: return $result;
1729: }
1730:
1731: ###############################################################
1732: ## Get Authentication Defaults for Domain ##
1733: ###############################################################
1734:
1735: =pod
1736:
1737: =head1 Domains and Authentication
1738:
1739: Returns default authentication type and an associated argument as
1740: listed in file 'domain.tab'.
1741:
1742: =over 4
1743:
1744: =item * get_auth_defaults
1745:
1746: get_auth_defaults($target_domain) returns the default authentication
1747: type and an associated argument (initial password or a kerberos domain).
1748: These values are stored in lonTabs/domain.tab
1749:
1750: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1751:
1752: If target_domain is not found in domain.tab, returns nothing ('').
1753:
1754: =cut
1755:
1756: #-------------------------------------------
1757: sub get_auth_defaults {
1758: my $domain=shift;
1759: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1760: }
1761: ###############################################################
1762: ## End Get Authentication Defaults for Domain ##
1763: ###############################################################
1764:
1765: ###############################################################
1766: ## Get Kerberos Defaults for Domain ##
1767: ###############################################################
1768: ##
1769: ## Returns default kerberos version and an associated argument
1770: ## as listed in file domain.tab. If not listed, provides
1771: ## appropriate default domain and kerberos version.
1772: ##
1773: #-------------------------------------------
1774:
1775: =pod
1776:
1777: =item * get_kerberos_defaults
1778:
1779: get_kerberos_defaults($target_domain) returns the default kerberos
1780: version and domain. If not found in domain.tabs, it defaults to
1781: version 4 and the domain of the server.
1782:
1783: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1784:
1785: =cut
1786:
1787: #-------------------------------------------
1788: sub get_kerberos_defaults {
1789: my $domain=shift;
1790: my ($krbdef,$krbdefdom) =
1791: &Apache::loncommon::get_auth_defaults($domain);
1792: unless ($krbdef =~/^krb/ && $krbdefdom) {
1793: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1794: my $krbdefdom=$1;
1795: $krbdefdom=~tr/a-z/A-Z/;
1796: $krbdef = "krb4";
1797: }
1798: return ($krbdef,$krbdefdom);
1799: }
1800:
1801: =pod
1802:
1803: =back
1804:
1805: =cut
1806:
1807: ###############################################################
1808: ## Thesaurus Functions ##
1809: ###############################################################
1810:
1811: =pod
1812:
1813: =head1 Thesaurus Functions
1814:
1815: =over 4
1816:
1817: =item * initialize_keywords
1818:
1819: Initializes the package variable %Keywords if it is empty. Uses the
1820: package variable $thesaurus_db_file.
1821:
1822: =cut
1823:
1824: ###################################################
1825:
1826: sub initialize_keywords {
1827: return 1 if (scalar keys(%Keywords));
1828: # If we are here, %Keywords is empty, so fill it up
1829: # Make sure the file we need exists...
1830: if (! -e $thesaurus_db_file) {
1831: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1832: " failed because it does not exist");
1833: return 0;
1834: }
1835: # Set up the hash as a database
1836: my %thesaurus_db;
1837: if (! tie(%thesaurus_db,'GDBM_File',
1838: $thesaurus_db_file,&GDBM_READER(),0640)){
1839: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1840: $thesaurus_db_file);
1841: return 0;
1842: }
1843: # Get the average number of appearances of a word.
1844: my $avecount = $thesaurus_db{'average.count'};
1845: # Put keywords (those that appear > average) into %Keywords
1846: while (my ($word,$data)=each (%thesaurus_db)) {
1847: my ($count,undef) = split /:/,$data;
1848: $Keywords{$word}++ if ($count > $avecount);
1849: }
1850: untie %thesaurus_db;
1851: # Remove special values from %Keywords.
1852: foreach my $value ('total.count','average.count') {
1853: delete($Keywords{$value}) if (exists($Keywords{$value}));
1854: }
1855: return 1;
1856: }
1857:
1858: ###################################################
1859:
1860: =pod
1861:
1862: =item * keyword($word)
1863:
1864: Returns true if $word is a keyword. A keyword is a word that appears more
1865: than the average number of times in the thesaurus database. Calls
1866: &initialize_keywords
1867:
1868: =cut
1869:
1870: ###################################################
1871:
1872: sub keyword {
1873: return if (!&initialize_keywords());
1874: my $word=lc(shift());
1875: $word=~s/\W//g;
1876: return exists($Keywords{$word});
1877: }
1878:
1879: ###############################################################
1880:
1881: =pod
1882:
1883: =item * get_related_words
1884:
1885: Look up a word in the thesaurus. Takes a scalar argument and returns
1886: an array of words. If the keyword is not in the thesaurus, an empty array
1887: will be returned. The order of the words returned is determined by the
1888: database which holds them.
1889:
1890: Uses global $thesaurus_db_file.
1891:
1892: =cut
1893:
1894: ###############################################################
1895: sub get_related_words {
1896: my $keyword = shift;
1897: my %thesaurus_db;
1898: if (! -e $thesaurus_db_file) {
1899: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1900: "failed because the file does not exist");
1901: return ();
1902: }
1903: if (! tie(%thesaurus_db,'GDBM_File',
1904: $thesaurus_db_file,&GDBM_READER(),0640)){
1905: return ();
1906: }
1907: my @Words=();
1908: if (exists($thesaurus_db{$keyword})) {
1909: # The first element is the number of times
1910: # the word appears. We do not need it now.
1911: (undef,@Words) = (split(/:/,$thesaurus_db{$keyword}));
1912: for (my $i=0;$i<=$#Words;$i++) {
1913: ($Words[$i],undef)= split(/\,/,$Words[$i]);
1914: }
1915: }
1916: untie %thesaurus_db;
1917: return @Words;
1918: }
1919:
1920: =pod
1921:
1922: =back
1923:
1924: =cut
1925:
1926: # -------------------------------------------------------------- Plaintext name
1927: =pod
1928:
1929: =head1 User Name Functions
1930:
1931: =over 4
1932:
1933: =item * plainname($uname,$udom,$first)
1934:
1935: Takes a users logon name and returns it as a string in
1936: "first middle last generation" form
1937: if $first is set to 'lastname' then it returns it as
1938: 'lastname generation, firstname middlename' if their is a lastname
1939:
1940: =cut
1941:
1942:
1943: ###############################################################
1944: sub plainname {
1945: my ($uname,$udom,$first)=@_;
1946: my %names=&getnames($uname,$udom);
1947: my $name=&Apache::lonnet::format_name($names{'firstname'},
1948: $names{'middlename'},
1949: $names{'lastname'},
1950: $names{'generation'},$first);
1951: $name=~s/^\s+//;
1952: $name=~s/\s+$//;
1953: $name=~s/\s+/ /g;
1954: if ($name !~ /\S/) { $name=$uname.':'.$udom; }
1955: return $name;
1956: }
1957:
1958: # -------------------------------------------------------------------- Nickname
1959: =pod
1960:
1961: =item * nickname($uname,$udom)
1962:
1963: Gets a users name and returns it as a string as
1964:
1965: ""nickname""
1966:
1967: if the user has a nickname or
1968:
1969: "first middle last generation"
1970:
1971: if the user does not
1972:
1973: =cut
1974:
1975: sub nickname {
1976: my ($uname,$udom)=@_;
1977: my %names=&getnames($uname,$udom);
1978: my $name=$names{'nickname'};
1979: if ($name) {
1980: $name='"'.$name.'"';
1981: } else {
1982: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1983: $names{'lastname'}.' '.$names{'generation'};
1984: $name=~s/\s+$//;
1985: $name=~s/\s+/ /g;
1986: }
1987: return $name;
1988: }
1989:
1990: sub getnames {
1991: my ($uname,$udom)=@_;
1992: my $id=$uname.':'.$udom;
1993: my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
1994: if ($cached) {
1995: return %{$names};
1996: } else {
1997: my %loadnames=&Apache::lonnet::get('environment',
1998: ['firstname','middlename','lastname','generation','nickname'],
1999: $udom,$uname);
2000: &Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
2001: return %loadnames;
2002: }
2003: }
2004:
2005: # ------------------------------------------------------------------ Screenname
2006:
2007: =pod
2008:
2009: =item * screenname($uname,$udom)
2010:
2011: Gets a users screenname and returns it as a string
2012:
2013: =cut
2014:
2015: sub screenname {
2016: my ($uname,$udom)=@_;
2017: if ($uname eq $env{'user.name'} &&
2018: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
2019: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
2020: return $names{'screenname'};
2021: }
2022:
2023:
2024: # ------------------------------------------------------------- Message Wrapper
2025:
2026: sub messagewrapper {
2027: my ($link,$username,$domain)=@_;
2028: return
2029: '<a href="/adm/email?compose=individual&'.
2030: 'recname='.$username.'&recdom='.$domain.'" '.
2031: 'title="'.&mt('Send message').'">'.$link.'</a>';
2032: }
2033: # --------------------------------------------------------------- Notes Wrapper
2034:
2035: sub noteswrapper {
2036: my ($link,$un,$do)=@_;
2037: return
2038: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
2039: }
2040: # ------------------------------------------------------------- Aboutme Wrapper
2041:
2042: sub aboutmewrapper {
2043: my ($link,$username,$domain,$target)=@_;
2044: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
2045: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
2046: }
2047:
2048: # ------------------------------------------------------------ Syllabus Wrapper
2049:
2050:
2051: sub syllabuswrapper {
2052: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2053: if ($fontcolor) {
2054: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2055: }
2056: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
2057: }
2058:
2059: sub track_student_link {
2060: my ($linktext,$sname,$sdom,$target,$start) = @_;
2061: my $link ="/adm/trackstudent?";
2062: my $title = 'View recent activity';
2063: if (defined($sname) && $sname !~ /^\s*$/ &&
2064: defined($sdom) && $sdom !~ /^\s*$/) {
2065: $link .= "selected_student=$sname:$sdom";
2066: $title .= ' of this student';
2067: }
2068: if (defined($target) && $target !~ /^\s*$/) {
2069: $target = qq{target="$target"};
2070: } else {
2071: $target = '';
2072: }
2073: if ($start) { $link.='&start='.$start; }
2074: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2075: }
2076:
2077: =pod
2078:
2079: =back
2080:
2081: =head1 Access .tab File Data
2082:
2083: =over 4
2084:
2085: =item * languageids()
2086:
2087: returns list of all language ids
2088:
2089: =cut
2090:
2091: sub languageids {
2092: return sort(keys(%language));
2093: }
2094:
2095: =pod
2096:
2097: =item * languagedescription()
2098:
2099: returns description of a specified language id
2100:
2101: =cut
2102:
2103: sub languagedescription {
2104: my $code=shift;
2105: return ($supported_language{$code}?'* ':'').
2106: $language{$code}.
2107: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2108: }
2109:
2110: sub plainlanguagedescription {
2111: my $code=shift;
2112: return $language{$code};
2113: }
2114:
2115: sub supportedlanguagecode {
2116: my $code=shift;
2117: return $supported_language{$code};
2118: }
2119:
2120: =pod
2121:
2122: =item * copyrightids()
2123:
2124: returns list of all copyrights
2125:
2126: =cut
2127:
2128: sub copyrightids {
2129: return sort(keys(%cprtag));
2130: }
2131:
2132: =pod
2133:
2134: =item * copyrightdescription()
2135:
2136: returns description of a specified copyright id
2137:
2138: =cut
2139:
2140: sub copyrightdescription {
2141: return &mt($cprtag{shift(@_)});
2142: }
2143:
2144: =pod
2145:
2146: =item * source_copyrightids()
2147:
2148: returns list of all source copyrights
2149:
2150: =cut
2151:
2152: sub source_copyrightids {
2153: return sort(keys(%scprtag));
2154: }
2155:
2156: =pod
2157:
2158: =item * source_copyrightdescription()
2159:
2160: returns description of a specified source copyright id
2161:
2162: =cut
2163:
2164: sub source_copyrightdescription {
2165: return &mt($scprtag{shift(@_)});
2166: }
2167:
2168: =pod
2169:
2170: =item * filecategories()
2171:
2172: returns list of all file categories
2173:
2174: =cut
2175:
2176: sub filecategories {
2177: return sort(keys(%category_extensions));
2178: }
2179:
2180: =pod
2181:
2182: =item * filecategorytypes()
2183:
2184: returns list of file types belonging to a given file
2185: category
2186:
2187: =cut
2188:
2189: sub filecategorytypes {
2190: my ($cat) = @_;
2191: return @{$category_extensions{lc($cat)}};
2192: }
2193:
2194: =pod
2195:
2196: =item * fileembstyle()
2197:
2198: returns embedding style for a specified file type
2199:
2200: =cut
2201:
2202: sub fileembstyle {
2203: return $fe{lc(shift(@_))};
2204: }
2205:
2206: sub filemimetype {
2207: return $fm{lc(shift(@_))};
2208: }
2209:
2210:
2211: sub filecategoryselect {
2212: my ($name,$value)=@_;
2213: return &select_form($value,$name,
2214: '' => &mt('Any category'),
2215: map { $_,$_ } sort(keys(%category_extensions)));
2216: }
2217:
2218: =pod
2219:
2220: =item * filedescription()
2221:
2222: returns description for a specified file type
2223:
2224: =cut
2225:
2226: sub filedescription {
2227: my $file_description = $fd{lc(shift())};
2228: $file_description =~ s:([\[\]]):~$1:g;
2229: return &mt($file_description);
2230: }
2231:
2232: =pod
2233:
2234: =item * filedescriptionex()
2235:
2236: returns description for a specified file type with
2237: extra formatting
2238:
2239: =cut
2240:
2241: sub filedescriptionex {
2242: my $ex=shift;
2243: my $file_description = $fd{lc($ex)};
2244: $file_description =~ s:([\[\]]):~$1:g;
2245: return '.'.$ex.' '.&mt($file_description);
2246: }
2247:
2248: # End of .tab access
2249: =pod
2250:
2251: =back
2252:
2253: =cut
2254:
2255: # ------------------------------------------------------------------ File Types
2256: sub fileextensions {
2257: return sort(keys(%fe));
2258: }
2259:
2260: # ----------------------------------------------------------- Display Languages
2261: # returns a hash with all desired display languages
2262: #
2263:
2264: sub display_languages {
2265: my %languages=();
2266: foreach my $lang (&preferred_languages()) {
2267: $languages{$lang}=1;
2268: }
2269: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2270: if ($env{'form.displaylanguage'}) {
2271: foreach my $lang (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2272: $languages{$lang}=1;
2273: }
2274: }
2275: return %languages;
2276: }
2277:
2278: sub preferred_languages {
2279: my @languages=();
2280: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2281: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2282: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2283: }
2284: if ($env{'environment.languages'}) {
2285: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
2286: }
2287: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2288: if ($browser) {
2289: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2290: }
2291: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2292: @languages=(@languages,
2293: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2294: }
2295: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2296: @languages=(@languages,
2297: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2298: }
2299: if ($Apache::lonnet::domain_lang_def{
2300: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2301: @languages=(@languages,
2302: $Apache::lonnet::domain_lang_def{
2303: $Apache::lonnet::perlvar{'lonDefDomain'}});
2304: }
2305: # turn "en-ca" into "en-ca,en"
2306: my @genlanguages;
2307: foreach my $lang (@languages) {
2308: unless ($lang=~/\w/) { next; }
2309: push (@genlanguages,$lang);
2310: if ($lang=~/(\-|\_)/) {
2311: push(@genlanguages,(split(/(\-|\_)/,$lang))[0]);
2312: }
2313: }
2314: return @genlanguages;
2315: }
2316:
2317: ###############################################################
2318: ## Student Answer Attempts ##
2319: ###############################################################
2320:
2321: =pod
2322:
2323: =head1 Alternate Problem Views
2324:
2325: =over 4
2326:
2327: =item * get_previous_attempt($symb, $username, $domain, $course,
2328: $getattempt, $regexp, $gradesub)
2329:
2330: Return string with previous attempt on problem. Arguments:
2331:
2332: =over 4
2333:
2334: =item * $symb: Problem, including path
2335:
2336: =item * $username: username of the desired student
2337:
2338: =item * $domain: domain of the desired student
2339:
2340: =item * $course: Course ID
2341:
2342: =item * $getattempt: Leave blank for all attempts, otherwise put
2343: something
2344:
2345: =item * $regexp: if string matches this regexp, the string will be
2346: sent to $gradesub
2347:
2348: =item * $gradesub: routine that processes the string if it matches $regexp
2349:
2350: =back
2351:
2352: The output string is a table containing all desired attempts, if any.
2353:
2354: =cut
2355:
2356: sub get_previous_attempt {
2357: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2358: my $prevattempts='';
2359: no strict 'refs';
2360: if ($symb) {
2361: my (%returnhash)=
2362: &Apache::lonnet::restore($symb,$course,$domain,$username);
2363: if ($returnhash{'version'}) {
2364: my %lasthash=();
2365: my $version;
2366: for ($version=1;$version<=$returnhash{'version'};$version++) {
2367: foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2368: $lasthash{$key}=$returnhash{$version.':'.$key};
2369: }
2370: }
2371: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2372: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2373: foreach my $key (sort(keys(%lasthash))) {
2374: my ($ign,@parts) = split(/\./,$key);
2375: if ($#parts > 0) {
2376: my $data=$parts[-1];
2377: pop(@parts);
2378: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2379: } else {
2380: if ($#parts == 0) {
2381: $prevattempts.='<th>'.$parts[0].'</th>';
2382: } else {
2383: $prevattempts.='<th>'.$ign.'</th>';
2384: }
2385: }
2386: }
2387: if ($getattempt eq '') {
2388: for ($version=1;$version<=$returnhash{'version'};$version++) {
2389: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2390: foreach my $key (sort(keys(%lasthash))) {
2391: my $value;
2392: if ($key =~ /timestamp/) {
2393: $value=scalar(localtime($returnhash{$version.':'.$key}));
2394: } else {
2395: $value=$returnhash{$version.':'.$key};
2396: }
2397: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2398: }
2399: }
2400: }
2401: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2402: foreach my $key (sort(keys(%lasthash))) {
2403: my $value;
2404: if ($key =~ /timestamp/) {
2405: $value=scalar(localtime($lasthash{$key}));
2406: } else {
2407: $value=$lasthash{$key};
2408: }
2409: $value=&Apache::lonnet::unescape($value);
2410: if ($key =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2411: $prevattempts.='<td>'.$value.' </td>';
2412: }
2413: $prevattempts.='</tr></table></td></tr></table>';
2414: } else {
2415: $prevattempts='Nothing submitted - no attempts.';
2416: }
2417: } else {
2418: $prevattempts='No data.';
2419: }
2420: }
2421:
2422: sub relative_to_absolute {
2423: my ($url,$output)=@_;
2424: my $parser=HTML::TokeParser->new(\$output);
2425: my $token;
2426: my $thisdir=$url;
2427: my @rlinks=();
2428: while ($token=$parser->get_token) {
2429: if ($token->[0] eq 'S') {
2430: if ($token->[1] eq 'a') {
2431: if ($token->[2]->{'href'}) {
2432: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2433: }
2434: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2435: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2436: } elsif ($token->[1] eq 'base') {
2437: $thisdir=$token->[2]->{'href'};
2438: }
2439: }
2440: }
2441: $thisdir=~s-/[^/]*$--;
2442: foreach my $link (@rlinks) {
2443: unless (($link=~/^http:\/\//i) ||
2444: ($link=~/^\//) ||
2445: ($link=~/^javascript:/i) ||
2446: ($link=~/^mailto:/i) ||
2447: ($link=~/^\#/)) {
2448: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$link);
2449: $output=~s/(\"|\'|\=\s*)\Q$link\E(\"|\'|\s|\>)/$1$newlocation$2/;
2450: }
2451: }
2452: # -------------------------------------------------- Deal with Applet codebases
2453: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2454: return $output;
2455: }
2456:
2457: =pod
2458:
2459: =item * get_student_view
2460:
2461: show a snapshot of what student was looking at
2462:
2463: =cut
2464:
2465: sub get_student_view {
2466: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2467: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2468: my (%form);
2469: my @elements=('symb','courseid','domain','username');
2470: foreach my $element (@elements) {
2471: $form{'grade_'.$element}=eval '$'.$element #'
2472: }
2473: if (defined($moreenv)) {
2474: %form=(%form,%{$moreenv});
2475: }
2476: if (defined($target)) { $form{'grade_target'} = $target; }
2477: $feedurl=&Apache::lonnet::clutter($feedurl);
2478: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2479: $userview=~s/\<body[^\>]*\>//gi;
2480: $userview=~s/\<\/body\>//gi;
2481: $userview=~s/\<html\>//gi;
2482: $userview=~s/\<\/html\>//gi;
2483: $userview=~s/\<head\>//gi;
2484: $userview=~s/\<\/head\>//gi;
2485: $userview=~s/action\s*\=/would_be_action\=/gi;
2486: $userview=&relative_to_absolute($feedurl,$userview);
2487: return $userview;
2488: }
2489:
2490: =pod
2491:
2492: =item * get_student_answers()
2493:
2494: show a snapshot of how student was answering problem
2495:
2496: =cut
2497:
2498: sub get_student_answers {
2499: my ($symb,$username,$domain,$courseid,%form) = @_;
2500: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2501: my (%moreenv);
2502: my @elements=('symb','courseid','domain','username');
2503: foreach my $element (@elements) {
2504: $moreenv{'grade_'.$element}=eval '$'.$element #'
2505: }
2506: $moreenv{'grade_target'}='answer';
2507: %moreenv=(%form,%moreenv);
2508: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2509: return $userview;
2510: }
2511:
2512: =pod
2513:
2514: =item * &submlink()
2515:
2516: Inputs: $text $uname $udom $symb $target
2517:
2518: Returns: A link to grades.pm such as to see the SUBM view of a student
2519:
2520: =cut
2521:
2522: ###############################################
2523: sub submlink {
2524: my ($text,$uname,$udom,$symb,$target)=@_;
2525: if (!($uname && $udom)) {
2526: (my $cursymb, my $courseid,$udom,$uname)=
2527: &Apache::lonxml::whichuser($symb);
2528: if (!$symb) { $symb=$cursymb; }
2529: }
2530: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2531: $symb=&Apache::lonnet::escape($symb);
2532: if ($target) { $target="target=\"$target\""; }
2533: return '<a href="/adm/grades?&command=submission&'.
2534: 'symb='.$symb.'&student='.$uname.
2535: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2536: }
2537: ##############################################
2538:
2539: =pod
2540:
2541: =item * &pgrdlink()
2542:
2543: Inputs: $text $uname $udom $symb $target
2544:
2545: Returns: A link to grades.pm such as to see the PGRD view of a student
2546:
2547: =cut
2548:
2549: ###############################################
2550: sub pgrdlink {
2551: my $link=&submlink(@_);
2552: $link=~s/(&command=submission)/$1&showgrading=yes/;
2553: return $link;
2554: }
2555: ##############################################
2556:
2557: =pod
2558:
2559: =item * &pprmlink()
2560:
2561: Inputs: $text $uname $udom $symb $target
2562:
2563: Returns: A link to parmset.pm such as to see the PPRM view of a
2564: student and a specific resource
2565:
2566: =cut
2567:
2568: ###############################################
2569: sub pprmlink {
2570: my ($text,$uname,$udom,$symb,$target)=@_;
2571: if (!($uname && $udom)) {
2572: (my $cursymb, my $courseid,$udom,$uname)=
2573: &Apache::lonxml::whichuser($symb);
2574: if (!$symb) { $symb=$cursymb; }
2575: }
2576: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2577: $symb=&Apache::lonnet::escape($symb);
2578: if ($target) { $target="target=\"$target\""; }
2579: return '<a href="/adm/parmset?&command=set&'.
2580: 'symb='.$symb.'&uname='.$uname.
2581: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2582: }
2583: ##############################################
2584:
2585: =pod
2586:
2587: =back
2588:
2589: =cut
2590:
2591: ###############################################
2592:
2593:
2594: sub timehash {
2595: my @ltime=localtime(shift);
2596: return ( 'seconds' => $ltime[0],
2597: 'minutes' => $ltime[1],
2598: 'hours' => $ltime[2],
2599: 'day' => $ltime[3],
2600: 'month' => $ltime[4]+1,
2601: 'year' => $ltime[5]+1900,
2602: 'weekday' => $ltime[6],
2603: 'dayyear' => $ltime[7]+1,
2604: 'dlsav' => $ltime[8] );
2605: }
2606:
2607: sub maketime {
2608: my %th=@_;
2609: return POSIX::mktime(
2610: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2611: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2612: }
2613:
2614: #########################################
2615:
2616: sub findallcourses {
2617: my ($roles) = @_;
2618: my %roles;
2619: if (ref($roles)) { %roles = map { $_ => 1 } @{$roles}; }
2620: my %courses;
2621: my $now=time;
2622: foreach my $key (keys(%env)) {
2623: if ( $key=~m{^user\.role\.(\w+)\./(\w+)/(\w+)} ) {
2624: my ($role,$domain,$id) = ($1,$2,$3);
2625: next if ($role eq 'ca' || $role eq 'aa');
2626: next if (%roles && !exists($roles{$role}));
2627: my ($starttime,$endtime)=split(/\./,$env{$key});
2628: my $active=1;
2629: if ($starttime) {
2630: if ($now<$starttime) { $active=0; }
2631: }
2632: if ($endtime) {
2633: if ($now>$endtime) { $active=0; }
2634: }
2635: if ($active) { $courses{$domain.'_'.$id}=1; }
2636: }
2637: }
2638: return keys(%courses);
2639: }
2640:
2641: ###############################################
2642: ###############################################
2643:
2644: =pod
2645:
2646: =head1 Domain Template Functions
2647:
2648: =over 4
2649:
2650: =item * &determinedomain()
2651:
2652: Inputs: $domain (usually will be undef)
2653:
2654: Returns: Determines which domain should be used for designs
2655:
2656: =cut
2657:
2658: ###############################################
2659: sub determinedomain {
2660: my $domain=shift;
2661: if (! $domain) {
2662: # Determine domain if we have not been given one
2663: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2664: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2665: if ($env{'request.role.domain'}) {
2666: $domain=$env{'request.role.domain'};
2667: }
2668: }
2669: return $domain;
2670: }
2671: ###############################################
2672: =pod
2673:
2674: =item * &domainlogo()
2675:
2676: Inputs: $domain (usually will be undef)
2677:
2678: Returns: A link to a domain logo, if the domain logo exists.
2679: If the domain logo does not exist, a description of the domain.
2680:
2681: =cut
2682:
2683: ###############################################
2684: sub domainlogo {
2685: my $domain = &determinedomain(shift);
2686: # See if there is a logo
2687: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2688: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2689: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2690: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2691: return $Apache::lonnet::domaindescription{$domain};
2692: } else {
2693: return '';
2694: }
2695: }
2696: ##############################################
2697:
2698: =pod
2699:
2700: =item * &designparm()
2701:
2702: Inputs: $which parameter; $domain (usually will be undef)
2703:
2704: Returns: value of designparamter $which
2705:
2706: =cut
2707:
2708: ##############################################
2709: sub designparm {
2710: my ($which,$domain)=@_;
2711: if ($env{'browser.blackwhite'} eq 'on') {
2712: if ($which=~/\.(font|alink|vlink|link)$/) {
2713: return '#000000';
2714: }
2715: if ($which=~/\.(pgbg|sidebg)$/) {
2716: return '#FFFFFF';
2717: }
2718: if ($which=~/\.tabbg$/) {
2719: return '#CCCCCC';
2720: }
2721: }
2722: if ($env{'environment.color.'.$which}) {
2723: return $env{'environment.color.'.$which};
2724: }
2725: $domain=&determinedomain($domain);
2726: if ($designhash{$domain.'.'.$which}) {
2727: return $designhash{$domain.'.'.$which};
2728: } else {
2729: return $designhash{'default.'.$which};
2730: }
2731: }
2732:
2733: ###############################################
2734: ###############################################
2735:
2736: =pod
2737:
2738: =back
2739:
2740: =head1 HTTP Helpers
2741:
2742: =over 4
2743:
2744: =item * &bodytag()
2745:
2746: Returns a uniform header for LON-CAPA web pages.
2747:
2748: Inputs:
2749:
2750: =over 4
2751:
2752: =item * $title, A title to be displayed on the page.
2753:
2754: =item * $function, the current role (can be undef).
2755:
2756: =item * $addentries, extra parameters for the <body> tag.
2757:
2758: =item * $bodyonly, if defined, only return the <body> tag.
2759:
2760: =item * $domain, if defined, force a given domain.
2761:
2762: =item * $forcereg, if page should register as content page (relevant for
2763: text interface only)
2764:
2765: =item * $customtitle, alternate text to use instead of $title
2766: in the title box that appears, this text
2767: is not auto translated like the $title is
2768:
2769: =item * $notopbar, if true, keep the 'what is this' info but remove the
2770: navigational links
2771:
2772: =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
2773:
2774: =item * $notitle, if true keep the nav controls, but remove the title bar
2775:
2776:
2777: =back
2778:
2779: Returns: A uniform header for LON-CAPA web pages.
2780: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2781: If $bodyonly is undef or zero, an html string containing a <body> tag and
2782: other decorations will be returned.
2783:
2784: =cut
2785:
2786: sub bodytag {
2787: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
2788: $notopbar,$bgcolor,$notitle)=@_;
2789:
2790: $title=&mt($title);
2791:
2792: $function = &get_users_function() if (!$function);
2793: my $img = &designparm($function.'.img',$domain);
2794: my $tabbg = &designparm($function.'.tabbg',$domain);
2795: my $font = &designparm($function.'.font',$domain);
2796: my $sidebg = &designparm($function.'.sidebg',$domain);
2797: my $pgbg = $bgcolor || &designparm($function.'.pgbg',$domain);
2798:
2799: my %design = ( 'style' => 'margin-top: 0px',
2800: 'bgcolor' => $pgbg,
2801: 'text' => $font,
2802: 'alink' => &designparm($function.'.alink',$domain),
2803: 'vlink' => &designparm($function.'.vlink',$domain),
2804: 'link' => &designparm($function.'.link',$domain),);
2805: @$addentries{keys(%design)} = @design{keys(%design)};
2806:
2807: # role and realm
2808: my ($role,$realm)
2809: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
2810: # realm
2811: if ($env{'request.course.id'}) {
2812: $realm=
2813: $env{'course.'.$env{'request.course.id'}.'.description'};
2814: }
2815: unless ($realm) { $realm=' '; }
2816: # Set messages
2817: my $messages=&domainlogo($domain);
2818: # Port for miniserver
2819: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2820: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2821:
2822: my $extra_body_attr = &make_attr_string($forcereg,$addentries);
2823:
2824: # construct main body tag
2825: my $bodytag = <<END;
2826: <body $extra_body_attr>
2827: END
2828:
2829: $bodytag .= &Apache::lontexconvert::init_math_support();
2830:
2831: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2832: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2833: if ($bodyonly
2834: || ($env{'request.state'} eq 'construct'
2835: && $env{'environment.remote'} ne 'off' )) {
2836: return $bodytag;
2837: } elsif ($env{'browser.interface'} eq 'textual') {
2838: # Accessibility
2839:
2840: $bodytag.=&Apache::lonmenu::menubuttons($forcereg,$forcereg);
2841: if (!$notitle) {
2842: $bodytag.='<h1>LON-CAPA: '.$title.'</h1>';
2843: }
2844: return $bodytag;
2845: } elsif ($env{'environment.remote'} eq 'off') {
2846: # No Remote
2847: my $roleinfo=(<<ENDROLE);
2848: <td bgcolor="$tabbg" align="right">
2849: <font size="2" face="Arial, Helvetica, sans-serif">
2850: $env{'environment.firstname'}
2851: $env{'environment.middlename'}
2852: $env{'environment.lastname'}
2853: $env{'environment.generation'}
2854: </font>
2855: <br />
2856: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2857: <br />
2858: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2859: </td>
2860: ENDROLE
2861: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2862: $font.'"><b>'.$title.'</b></font>';
2863: if ($customtitle) {
2864: $titleinfo = $customtitle;
2865: }
2866:
2867: if ($env{'request.state'} eq 'construct') {
2868: my ($uname,$thisdisfn)=
2869: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2870: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2871: $formaction=~s/\/+/\//g;
2872: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2873: my $parentpath = '';
2874: my $lastitem = '';
2875: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2876: $parentpath = $1;
2877: $lastitem = $2;
2878: } else {
2879: $lastitem = $thisdisfn;
2880: }
2881: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2882: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2883: '<form name="dirs" method="post" action="'.$formaction
2884: .'" target="_top"><tt><b>'
2885: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2886: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2887: .'</form>'
2888: .&Apache::lonmenu::constspaceform();
2889:
2890: }
2891: $forcereg=1;
2892: }
2893: my $titletable;
2894: if (!$notitle) {
2895: $titletable =
2896: '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2897: 'cellspacing="3" cellpadding="3">'.
2898: '<tr><td bgcolor="'.$tabbg.'">'.
2899: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2900: }
2901: if ($env{'request.state'} eq 'construct') {
2902: if ($notopbar) {
2903: $bodytag .= $titletable;
2904: } else {
2905: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg,
2906: $titletable);
2907: }
2908: } else {
2909: if ($notopbar) {
2910: $bodytag .= $titletable;
2911: } else {
2912: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg).
2913: $titletable;
2914: }
2915: }
2916: return $bodytag;
2917: }
2918:
2919: #
2920: # Top frame rendering, Remote is up
2921: #
2922: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2923: if ($customtitle) {
2924: $titleinfo = $customtitle;
2925: }
2926: #
2927: # Extra info if you are the DC
2928: my $dc_info = '';
2929: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2930: $env{'course.'.$env{'request.course.id'}.
2931: '.domain'}.'/'})) {
2932: my $cid = $env{'request.course.id'};
2933: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
2934: $dc_info = '('.$dc_info.')';
2935: }
2936: # Explicit link to get inline menu
2937: my $menu='<br /><font size="2" face="Arial, Helvetica, sans-serif"> <a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a></font>';
2938: #
2939: if ($notitle) {
2940: return $bodytag;
2941: }
2942: return(<<ENDBODY);
2943: $bodytag
2944: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2945: <tr><td bgcolor="$sidebg">
2946: $upperleft</td>
2947: <td bgcolor="$sidebg" align="right">$messages </td>
2948: </tr>
2949: <tr>
2950: <td rowspan="3" bgcolor="$tabbg">
2951: $titleinfo $dc_info $menu
2952: </td><td bgcolor="$tabbg" align="right">
2953: <font size="2" face="Arial, Helvetica, sans-serif">
2954: $env{'environment.firstname'}
2955: $env{'environment.middlename'}
2956: $env{'environment.lastname'}
2957: $env{'environment.generation'}
2958: </font>
2959: </td>
2960: </tr>
2961: <tr><td bgcolor="$tabbg" align="right">
2962: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2963: </td></tr>
2964: <tr>
2965: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2966: </table>
2967: ENDBODY
2968: }
2969:
2970: sub make_attr_string {
2971: my ($register,$attr_ref) = @_;
2972:
2973: if ($attr_ref && !ref($attr_ref)) {
2974: die("addentries Must be a hash ref ".
2975: join(':',caller(1))." ".
2976: join(':',caller(0))." ");
2977: }
2978:
2979: if ($register) {
2980: my ($on_load,$on_unload);
2981: foreach my $key (keys(%{$attr_ref})) {
2982: if (lc($key) eq 'onload') {
2983: $on_load.=$attr_ref->{$key}.';';
2984: delete($attr_ref->{$key});
2985:
2986: } elsif (lc($key) eq 'onunload') {
2987: $on_unload.=$attr_ref->{$key}.';';
2988: delete($attr_ref->{$key});
2989: }
2990: }
2991: $attr_ref->{'onload'} =
2992: &Apache::lonmenu::loadevents(). $on_load;
2993: $attr_ref->{'onunload'}=
2994: &Apache::lonmenu::unloadevents().$on_unload;
2995: }
2996:
2997: # Accessibility font enhance
2998: if ($env{'browser.fontenhance'} eq 'on') {
2999: my $style;
3000: foreach my $key (keys(%{$attr_ref})) {
3001: if (lc($key) eq 'style') {
3002: $style.=$attr_ref->{$key}.';';
3003: delete($attr_ref->{$key});
3004: }
3005: }
3006: $attr_ref->{'style'}=$style.'; font-size: x-large;';
3007: }
3008:
3009: if ($env{'browser.blackwhite'} eq 'on') {
3010: delete($attr_ref->{'font'});
3011: delete($attr_ref->{'link'});
3012: delete($attr_ref->{'alink'});
3013: delete($attr_ref->{'vlink'});
3014: delete($attr_ref->{'bgcolor'});
3015: delete($attr_ref->{'background'});
3016: }
3017:
3018: my $attr_string;
3019: foreach my $attr (keys(%$attr_ref)) {
3020: $attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
3021: }
3022: return $attr_string;
3023: }
3024:
3025:
3026: ###############################################
3027: ###############################################
3028:
3029: =pod
3030:
3031: =back
3032:
3033: =head1 HTML Helpers
3034:
3035: =over 4
3036:
3037: =item * &endbodytag()
3038:
3039: Returns a uniform footer for LON-CAPA web pages.
3040:
3041: Inputs: none
3042:
3043: =back
3044:
3045: =cut
3046:
3047: sub endbodytag {
3048: my $endbodytag='</body>';
3049: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
3050: if ( exists( $env{'internal.head.redirect'} ) ) {
3051: $endbodytag=
3052: "<br /><a href=\"$env{'internal.head.redirect'}\">".
3053: &mt('Continue').'</a>'.
3054: $endbodytag;
3055: }
3056: return $endbodytag;
3057: }
3058:
3059: =pod
3060:
3061: =over 4
3062:
3063: =item * &standard_css()
3064:
3065: Returns a style sheet
3066:
3067: Inputs: (all optional)
3068: domain -> force to color decorate a page for a specific
3069: domain
3070: function -> force usage of a specific rolish color scheme
3071: bgcolor -> override the default page bgcolor
3072:
3073: =back
3074:
3075: =cut
3076:
3077: sub standard_css {
3078: my ($function,$domain,$bgcolor) = @_;
3079: $function = &get_users_function() if (!$function);
3080: my $img = &designparm($function.'.img', $domain);
3081: my $tabbg = &designparm($function.'.tabbg', $domain);
3082: my $font = &designparm($function.'.font', $domain);
3083: my $sidebg = &designparm($function.'.sidebg',$domain);
3084: my $pgbg = $bgcolor ||
3085: &designparm($function.'.pgbg', $domain);
3086: my $alink = &designparm($function.'.alink', $domain);
3087: my $vlink = &designparm($function.'.vlink', $domain);
3088: my $link = &designparm($function.'.link', $domain);
3089:
3090: my $sans = 'Arial,Helvetica,sans-serif';
3091: my $data_table_head = $tabbg;
3092: my $data_table_light = '#EEEEEE';
3093: my $data_table_dark = '#DDD';
3094: my $data_table_highlight = '#FFFF00';
3095: my $mail_new = '#FFBB77';
3096: my $mail_new_hover = '#DD9955';
3097: my $mail_read = '#BBBB77';
3098: my $mail_read_hover = '#999944';
3099: my $mail_replied = '#AAAA88';
3100: my $mail_replied_hover = '#888855';
3101: my $mail_other = '#99BBBB';
3102: my $mail_other_hover = '#669999';
3103:
3104: return <<END;
3105: <style type="text/css">
3106: h1, h2, h3, th { font-family: $sans }
3107: a:focus { color: red; background: yellow }
3108: table.thinborder { border-collapse: collapse; }
3109: table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
3110: form, .inline { display: inline; }
3111: .center { text-align: center; }
3112: .filename {font-family: monospace;}
3113: .LC_error {
3114: color: red;
3115: font-size: larger;
3116: }
3117: .LC_success {
3118: color: green;
3119: }
3120:
3121: table#LC_top_nav, table#LC_menubuttons, table#LC_nav_location {
3122: width: 100%;
3123: background: $pgbg;
3124: border: 0px;
3125: border-spacing: 1px;
3126: padding: 0px;
3127: margin: 0px;
3128: border-collapse: separate;
3129: }
3130: table#LC_menubuttons_mainmenu {
3131: background: $pgbg;
3132: border: 0px;
3133: border-spacing: 1px;
3134: padding: 0px;
3135: margin: 0px;
3136: border-collapse: separate;
3137: }
3138: table#LC_menubuttons img, table#LC_menubuttons_mainmenu img {
3139: border: 0px;
3140: }
3141: table#LC_top_nav td {
3142: background: $tabbg;
3143: }
3144: table#LC_top_nav td a, div#LC_top_nav a {
3145: color: $font;
3146: font-family: $sans;
3147: }
3148: .LC_menubuttons_inline_text {
3149: color: $font;
3150: font-family: $sans;
3151: font-size: smaller;
3152: }
3153:
3154: td.LC_menubuttons_text {
3155: color: $font;
3156: font-family: $sans;
3157: }
3158: td.LC_menubuttons_img {
3159: background: $tabbg;
3160: }
3161: .LC_current_location {
3162: font-family: $sans;
3163: background: $tabbg;
3164: }
3165: .LC_new_mail {
3166: font-family: $sans;
3167: font-weight: bold;
3168: }
3169:
3170: table.LC_data_table, table.LC_mail_list {
3171: border: 1px solid #000000;
3172: border-collapse: seperate;
3173: }
3174: table.LC_data_table tr th, table.LC_calendar tr th, table.LC_mail_list tr th {
3175: font-weight: bold;
3176: background-color: $data_table_head;
3177: }
3178: table.LC_data_table tr td {
3179: background-color: $data_table_light;
3180: }
3181: table.LC_data_table tr.LC_even_row td {
3182: background-color: $data_table_dark;
3183: }
3184: table.LC_data_table tr.LC_empty td {
3185: background-color: #FFFFFF;
3186: }
3187:
3188: table.LC_calendar {
3189: border: 1px solid #000000;
3190: border-collapse: collapse;
3191: }
3192: table.LC_calendar_pickdate {
3193: font-size: xx-small;
3194: }
3195: table.LC_calendar tr td {
3196: border: 1px solid #000000;
3197: vertical-align: top;
3198: }
3199: table.LC_calendar tr td.LC_calendar_day_empty {
3200: background-color: $data_table_dark;
3201: }
3202: table.LC_calendar tr td.LC_calendar_day_current {
3203: background-color: $data_table_highlight;
3204: }
3205:
3206: table.LC_mail_list tr.LC_mail_new {
3207: background-color: $mail_new;
3208: }
3209: table.LC_mail_list tr.LC_mail_new:hover {
3210: background-color: $mail_new_hover;
3211: }
3212: table.LC_mail_list tr.LC_mail_read {
3213: background-color: $mail_read;
3214: }
3215: table.LC_mail_list tr.LC_mail_read:hover {
3216: background-color: $mail_read_hover;
3217: }
3218: table.LC_mail_list tr.LC_mail_replied {
3219: background-color: $mail_replied;
3220: }
3221: table.LC_mail_list tr.LC_mail_replied:hover {
3222: background-color: $mail_replied_hover;
3223: }
3224: table.LC_mail_list tr.LC_mail_other {
3225: background-color: $mail_other;
3226: }
3227: table.LC_mail_list tr.LC_mail_other:hover {
3228: background-color: $mail_other_hover;
3229: }
3230: </style>
3231: END
3232: }
3233:
3234: =pod
3235:
3236: =over 4
3237:
3238: =item * &headtag()
3239:
3240: Returns a uniform footer for LON-CAPA web pages.
3241:
3242: Inputs: $title - optional title for the head
3243: $head_extra - optional extra HTML to put inside the <head>
3244: $args - optional arguments
3245: force_register - if is true call registerurl so the remote is
3246: informed
3247: redirect -> array ref of seconds before redirect occurs
3248: url to redirect to
3249: (side effect of setting
3250: $env{'internal.head.redirect'} to the url
3251: redirected too)
3252: domain -> force to color decorate a page for a specific
3253: domain
3254: function -> force usage of a specific rolish color scheme
3255: bgcolor -> override the default page bgcolor
3256:
3257: =back
3258:
3259: =cut
3260:
3261: sub headtag {
3262: my ($title,$head_extra,$args) = @_;
3263:
3264: my $result =
3265: '<head>'.
3266: &standard_css($args->{'function'},$args->{'domain'},
3267: $args->{'bgcolor'}).
3268: &font_settings().
3269: &Apache::lonhtmlcommon::htmlareaheaders();
3270:
3271: if ($args->{'force_register'}) {
3272: $result .= &Apache::lonmenu::registerurl(1);
3273: }
3274:
3275: if (ref($args->{'redirect'})) {
3276: my ($time,$url) = @{$args->{'redirect'}};
3277: $url = &Apache::lonenc::check_encrypt($url);
3278: $env{'internal.head.redirect'} = $url;
3279: $result.=<<ADDMETA
3280: <meta http-equiv="pragma" content="no-cache" />
3281: <meta http-equiv="Refresh" content="$time; url=$url" />
3282: ADDMETA
3283: }
3284: if (!defined($title)) {
3285: $title = 'The LearningOnline Network with CAPA';
3286: }
3287:
3288: $result .= '<title> LON-CAPA '.&mt($title).'</title>'.$head_extra;
3289: return $result;
3290: }
3291:
3292: =pod
3293:
3294: =over 4
3295:
3296: =item * &font_settings()
3297:
3298: Returns neccessary <meta> to set the proper encoding
3299:
3300: Inputs: none
3301:
3302: =back
3303:
3304: =cut
3305:
3306: sub font_settings {
3307: my $headerstring='';
3308: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
3309: $headerstring.=
3310: '<meta Content-Type="text/html; charset=x-mac-roman" />';
3311: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
3312: $headerstring.=
3313: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
3314: }
3315: return $headerstring;
3316: }
3317:
3318: =pod
3319:
3320: =over 4
3321:
3322: =item * &xml_begin()
3323:
3324: Returns the needed doctype and <html>
3325:
3326: Inputs: none
3327:
3328: =back
3329:
3330: =cut
3331:
3332: sub xml_begin {
3333: my $output='';
3334:
3335: &Apache::lonhtmlcommon::init_htmlareafields();
3336:
3337: if ($env{'browser.mathml'}) {
3338: $output='<?xml version="1.0"?>'
3339: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
3340: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
3341:
3342: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
3343: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
3344: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
3345: .'xmlns="http://www.w3.org/1999/xhtml">';
3346: } else {
3347: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
3348: }
3349: return $output;
3350: }
3351:
3352: =pod
3353:
3354: =over 4
3355:
3356: =item * &endheadtag()
3357:
3358: Returns a uniform </head> for LON-CAPA web pages.
3359:
3360: Inputs: none
3361:
3362: =back
3363:
3364: =cut
3365:
3366: sub endheadtag {
3367: return '</head>';
3368: }
3369:
3370: =pod
3371:
3372: =over 4
3373:
3374: =item * &head()
3375:
3376: Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
3377:
3378: Inputs: $title - optional title for the page
3379: $head_extra - optional extra HTML to put inside the <head>
3380: =back
3381:
3382: =cut
3383:
3384: sub head {
3385: my ($title,$head_extra,$args) = @_;
3386: return &headtag($title,$head_extra,$args).&endheadtag();
3387: }
3388:
3389: =pod
3390:
3391: =over 4
3392:
3393: =item * &start_page()
3394:
3395: Returns a complete <html> .. <body> section for LON-CAPA web pages.
3396:
3397: Inputs: $title - optional title for the page
3398: $head_extra - optional extra HTML to incude inside the <head>
3399: $args - additional optional args supported are:
3400: only_body -> is true will set &bodytag() onlybodytag
3401: arg on
3402: no_nav_bar -> is true will set &bodytag() notopbar arg on
3403: add_entries -> additional attributes to add to the <body>
3404: domain -> force to color decorate a page for a
3405: specific domain
3406: function -> force usage of a specific rolish color
3407: scheme
3408: redirect -> see &headtag()
3409: bgcolor -> override the default page bg color
3410: js_ready -> return a string ready for being used in
3411: a javascript writeln
3412: html_encode -> return a string ready for being used in
3413: a html attribute
3414: force_register -> if is true will turn on the &bodytag()
3415: $forcereg arg
3416: body_title -> alternate text to use instead of $title
3417: in the title box that appears, this text
3418: is not auto translated like the $title is
3419: frameset -> if true will start with a <frameset>
3420: rather than <body>
3421: no_title -> if true the title bar won't be shown
3422: skip_phases -> hash ref of
3423: head -> skip the <html><head> generation
3424: body -> skip all <body> generation
3425:
3426: =back
3427:
3428: =cut
3429:
3430: sub start_page {
3431: my ($title,$head_extra,$args) = @_;
3432: #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
3433: my %head_args;
3434: foreach my $arg ('redirect','force_register','domain','function',
3435: 'bgcolor') {
3436: if (defined($args->{$arg})) {
3437: $head_args{$arg} = $args->{$arg};
3438: }
3439: }
3440:
3441: $env{'internal.start_page'}++;
3442: my $result;
3443: if (! exists($args->{'skip_phases'}{'head'}) ) {
3444: $result.=
3445: &xml_begin().
3446: &headtag($title,$head_extra,\%head_args).&endheadtag();
3447: }
3448:
3449: if (! exists($args->{'skip_phases'}{'body'}) ) {
3450: if ($args->{'frameset'}) {
3451: my $attr_string = &make_attr_string($args->{'force_register'},
3452: $args->{'add_entries'});
3453: $result .= "\n<frameset $attr_string>\n";
3454: } else {
3455: $result .=
3456: &bodytag($title,
3457: $args->{'function'}, $args->{'add_entries'},
3458: $args->{'only_body'}, $args->{'domain'},
3459: $args->{'force_register'}, $args->{'body_title'},
3460: $args->{'no_nav_bar'}, $args->{'bgcolor'},
3461: $args->{'no_title'});
3462: }
3463: }
3464:
3465: if ($args->{'js_ready'}) {
3466: $result = &js_ready($result);
3467: }
3468: if ($args->{'html_encode'}) {
3469: $result = &html_encode($result);
3470: }
3471: return $result;
3472: }
3473:
3474:
3475: =pod
3476:
3477: =over 4
3478:
3479: =item * &head()
3480:
3481: Returns a complete </body></html> section for LON-CAPA web pages.
3482:
3483: Inputs: $args - additional optional args supported are:
3484: js_ready -> return a string ready for being used in
3485: a javascript writeln
3486: html_encode -> return a string ready for being used in
3487: a html attribute
3488: frameset -> if true will start with a <frameset>
3489: rather than <body>
3490: =back
3491:
3492: =cut
3493:
3494: sub end_page {
3495: my ($args) = @_;
3496: #&Apache::lonnet::logthis("end_page ".join(':',caller(0)));
3497: $env{'internal.end_page'}++;
3498: my $result;
3499: if ($args->{'discussion'}) {
3500: my ($target,$parser);
3501: if (ref($args->{'discussion'})) {
3502: ($target,$parser) =($args->{'discussion'}{'target'},
3503: $args->{'discussion'}{'parser'});
3504: }
3505: $result .= &Apache::lonxml::xmlend($target,$parser);
3506: }
3507:
3508: if ($args->{'frameset'}) {
3509: $result .= '</frameset>';
3510: } else {
3511: $result .= &endbodytag();
3512: }
3513: $result .= "\n</html>";
3514:
3515: if ($args->{'js_ready'}) {
3516: $result = &js_ready($result);
3517: }
3518:
3519: if ($args->{'html_encode'}) {
3520: $result = &html_encode($result);
3521: }
3522:
3523: return $result;
3524: }
3525:
3526: sub html_encode {
3527: my ($result) = @_;
3528:
3529: $result = &HTML::Entities::encode($result,'<>&"');
3530:
3531: return $result;
3532: }
3533: sub js_ready {
3534: my ($result) = @_;
3535:
3536: $result =~ s/[\n\r]/ /xmsg;
3537: $result =~ s/\\/\\\\/xmsg;
3538: $result =~ s/'/\\'/xmsg;
3539: $result =~ s{</script>}{</scrip'+'t>}xmsg;
3540:
3541: return $result;
3542: }
3543:
3544: sub validate_page {
3545: if ( exists($env{'internal.start_page'})
3546: && $env{'internal.start_page'} > 1) {
3547: &Apache::lonnet::logthis('start_page called multiple times '.
3548: $env{'internal.start_page'}.' '.
3549: $ENV{'request.filename'});
3550: }
3551: if ( exists($env{'internal.end_page'})
3552: && $env{'internal.end_page'} > 1) {
3553: &Apache::lonnet::logthis('end_page called multiple times '.
3554: $env{'internal.end_page'}.' '.
3555: $env{'request.filename'});
3556: }
3557: if ( exists($env{'internal.start_page'})
3558: && ! exists($env{'internal.end_page'})) {
3559: &Apache::lonnet::logthis('start_page called without end_page '.
3560: $env{'request.filename'});
3561: }
3562: if ( ! exists($env{'internal.start_page'})
3563: && exists($env{'internal.end_page'})) {
3564: &Apache::lonnet::logthis('end_page called without start_page'.
3565: $env{'request.filename'});
3566: }
3567: }
3568:
3569: sub simple_error_page {
3570: my ($r,$title,$msg) = @_;
3571: my $page =
3572: &Apache::loncommon::start_page($title).
3573: &mt($msg).
3574: &Apache::loncommon::end_page();
3575: if (ref($r)) {
3576: $r->print($page);
3577: return;
3578: }
3579: return $page;
3580: }
3581:
3582: {
3583: my $row_count;
3584: sub start_data_table {
3585: undef($row_count);
3586: return '<table class="LC_data_table">';
3587: }
3588:
3589: sub end_data_table {
3590: undef($row_count);
3591: return '</table>';
3592: }
3593:
3594: sub start_data_table_row {
3595: $row_count++;
3596: return '<tr '.(($row_count % 2)?'':'class="LC_even_row"').'>';
3597: }
3598:
3599: sub end_data_table_row {
3600: return '</tr>';
3601: }
3602: }
3603:
3604: ###############################################
3605:
3606: =pod
3607:
3608: =over 4
3609:
3610: =item get_users_function
3611:
3612: Used by &bodytag to determine the current users primary role.
3613: Returns either 'student','coordinator','admin', or 'author'.
3614:
3615: =cut
3616:
3617: ###############################################
3618: sub get_users_function {
3619: my $function = 'student';
3620: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
3621: $function='coordinator';
3622: }
3623: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
3624: $function='admin';
3625: }
3626: if (($env{'request.role'}=~/^(au|ca)/) ||
3627: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
3628: $function='author';
3629: }
3630: return $function;
3631: }
3632:
3633: ###############################################
3634:
3635: =pod
3636:
3637: =item check_user_status
3638:
3639: Determines current status of supplied role for a
3640: specific user. Roles can be active, previous or future.
3641:
3642: Inputs:
3643: user's domain, user's username, course's domain,
3644: course's number, optional section/group.
3645:
3646: Outputs:
3647: role status: active, previous or future.
3648:
3649: =cut
3650:
3651: sub check_user_status {
3652: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
3653: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
3654: my @uroles = keys %userinfo;
3655: my $srchstr;
3656: my $active_chk = 'none';
3657: if (@uroles > 0) {
3658: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
3659: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3660: } else {
3661: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3662: if (grep/^$srchstr$/,@uroles) {
3663: my $role_end = 0;
3664: my $role_start = 0;
3665: $active_chk = 'active';
3666: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3667: $role_end = $2;
3668: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3669: $role_start = $3;
3670: }
3671: }
3672: if ($role_start > 0) {
3673: if (time < $role_start) {
3674: $active_chk = 'future';
3675: }
3676: }
3677: if ($role_end > 0) {
3678: if (time > $role_end) {
3679: $active_chk = 'previous';
3680: }
3681: }
3682: }
3683: }
3684: return $active_chk;
3685: }
3686:
3687: ###############################################
3688:
3689: =pod
3690:
3691: =item get_sections
3692:
3693: Determines all the sections for a course including
3694: sections with students and sections containing other roles.
3695: Incoming parameters: domain, course number, reference to
3696: section hash (keys to be section/group IDs), reference to
3697: array containing roles for which sections should be gathered
3698: (optional). If the fourth argument is undefined, sections
3699: are gathered for any role.
3700:
3701: Returns number of sections.
3702:
3703: =cut
3704:
3705: ###############################################
3706: sub get_sections {
3707: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
3708: if (!($cdom && $cnum)) { return 0; }
3709: my $numsections = 0;
3710:
3711: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
3712: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
3713: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3714: my $status_index = &Apache::loncoursedata::CL_STATUS();
3715: while (my ($student,$data) = each %$classlist) {
3716: my ($section,$status) = ($data->[$sec_index],
3717: $data->[$status_index]);
3718: unless ($section eq '-1' || $section =~ /^\s*$/) {
3719: if (!defined($$sectioncount{$section})) { $numsections++; }
3720: $$sectioncount{$section}++;
3721: }
3722: }
3723: }
3724: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3725: foreach my $user (sort(keys(%courseroles))) {
3726: if ($user !~ /^(\w{2})/) { next; }
3727: my ($role) = ($user =~ /^(\w{2})/);
3728: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3729: my $section;
3730: if ($role eq 'cr' &&
3731: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3732: $section=$1;
3733: }
3734: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3735: if (!defined($section) || $section eq '-1') { next; }
3736: if (!defined($$sectioncount{$section})) { $numsections++; }
3737: $$sectioncount{$section}++;
3738: }
3739: return $numsections;
3740: }
3741:
3742: ###############################################
3743:
3744: =pod
3745:
3746: =item coursegroups
3747:
3748: Retrieve information about groups in a course,
3749:
3750: Input:
3751: 1. Reference to hash to populate with group information.
3752: 2. Optional course domain
3753: 3. Optional course number
3754: 4. Optional group name
3755:
3756: Course domain and number will be taken from user's
3757: environment if not supplied. Optional group name will'
3758: be passed to lonnet::get_coursegroups() as a regexp to
3759: use in the call to the dump function.
3760:
3761: Output
3762: Returns number of groups in the course (subject to the
3763: optional group name filter).
3764:
3765: Side effects:
3766: Populates the referenced curr_groups hash, with key,
3767: value pairs. Keys are group names, corresponding values
3768: are scalars containing group information in XML. This
3769: can be sent to &get_group_settings() to be parsed.
3770:
3771: =cut
3772:
3773: ###############################################
3774:
3775: sub coursegroups {
3776: my ($curr_groups,$cdom,$cnum,$group) = @_;
3777: my $numgroups;
3778: if (!defined($cdom) || !defined($cnum)) {
3779: my $cid = $env{'request.course.id'};
3780: $cdom = $env{'course.'.$cid.'.domain'};
3781: $cnum = $env{'course.'.$cid.'.num'};
3782: }
3783: %{$curr_groups} = &Apache::lonnet::get_coursegroups($cdom,$cnum,$group);
3784: my ($tmp) = keys(%{$curr_groups});
3785: if ($tmp=~/^error:/) {
3786: unless ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
3787: &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.
3788: $cdom);
3789: }
3790: $numgroups = 0;
3791: } else {
3792: $numgroups = keys(%{$curr_groups});
3793: }
3794: return $numgroups;
3795: }
3796:
3797: ###############################################
3798:
3799: =pod
3800:
3801: =item get_group_settings
3802:
3803: Uses TokeParser to extract group information from the
3804: XML used to describe course groups.
3805:
3806: Input:
3807: Scalar containing XML - as retrieved from &coursegroups().
3808:
3809: Output:
3810: Hash containing group information as key=values for (a), and
3811: hash of hashes for (b)
3812:
3813: Keys (in two categories):
3814: (a) groupname, creator, creation, modified, startdate,enddate.
3815: Corresponding values are name of the group, creator of the group
3816: (username:domain), UNIX time for date group was created, and
3817: settings were last modified, and default start and end access
3818: times for group members.
3819:
3820: (b) functions returned in hash of hashes.
3821: Outer hash key is functions.
3822: Inner hash keys are chat,discussion,email,files,homepage,roster.
3823: Corresponding values are either on or off, depending on
3824: whether this type of functionality is available for the group.
3825:
3826: =cut
3827:
3828: ###############################################
3829:
3830: sub get_group_settings {
3831: my ($groupinfo)=@_;
3832: my $parser=HTML::TokeParser->new(\$groupinfo);
3833: my $token;
3834: my $tool = '';
3835: my $role = '';
3836: my %content=();
3837: while ($token=$parser->get_token) {
3838: if ($token->[0] eq 'S') {
3839: my $entry=$token->[1];
3840: if ($entry eq 'functions' || $entry eq 'autosec') {
3841: %{$content{$entry}} = ();
3842: $tool = $entry;
3843: } elsif ($entry eq 'role') {
3844: if ($tool eq 'autosec') {
3845: $role = $token->[2]{id};
3846: }
3847: } else {
3848: my $value=$parser->get_text('/'.$entry);
3849: if ($entry eq 'name') {
3850: if ($tool eq 'functions') {
3851: my $function = $token->[2]{id};
3852: $content{$tool}{$function} = $value;
3853: }
3854: } elsif ($entry eq 'groupname') {
3855: $content{$entry}=&Apache::lonnet::unescape($value);
3856: } elsif (($entry eq 'roles') || ($entry eq 'types') ||
3857: ($entry eq 'sectionpick') || ($entry eq 'defpriv')) {
3858: push(@{$content{$entry}},$value);
3859: } elsif ($entry eq 'section') {
3860: if ($tool eq 'autosec' && $role ne '') {
3861: push(@{$content{$tool}{$role}},$value);
3862: }
3863: } else {
3864: $content{$entry}=$value;
3865: }
3866: }
3867: } elsif ($token->[0] eq 'E') {
3868: if ($token->[1] eq 'functions' || $token->[1] eq 'autosec') {
3869: $tool = '';
3870: } elsif ($token->[1] eq 'role') {
3871: $role = '';
3872: }
3873:
3874: }
3875: }
3876: return %content;
3877: }
3878:
3879: sub check_group_access {
3880: my ($group) = @_;
3881: my $access = 1;
3882: my $now = time;
3883: my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
3884: if (($end!=0) && ($end<$now)) { $access = 0; }
3885: if (($start!=0) && ($start>$now)) { $access=0; }
3886: return $access;
3887: }
3888:
3889: ###############################################
3890:
3891: =pod
3892:
3893: =item get_course_users
3894:
3895: Retrieves usernames:domains for users in the specified course
3896: with specific role(s), and access status.
3897:
3898: Incoming parameters:
3899: 1. course domain
3900: 2. course number
3901: 3. access status: users must have - either active,
3902: previous, future, or all.
3903: 4. reference to array of permissible roles
3904: 5. reference to array of section restrictions (optional)
3905: 6. reference to results object (hash of hashes).
3906: 7. reference to optional userdata hash
3907: Keys of top level hash are roles.
3908: Keys of inner hashes are username:domain, with
3909: values set to access type.
3910: Optional userdata hash returns an array with arguments in the
3911: same order as loncoursedata::get_classlist() for student data.
3912:
3913: Entries for end, start, section and status are blank because
3914: of the possibility of multiple values for non-student roles.
3915:
3916: =cut
3917:
3918: ###############################################
3919:
3920: sub get_course_users {
3921: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
3922: my %idx = ();
3923:
3924: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
3925: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
3926: $idx{end} = &Apache::loncoursedata::CL_END();
3927: $idx{start} = &Apache::loncoursedata::CL_START();
3928: $idx{id} = &Apache::loncoursedata::CL_ID();
3929: $idx{section} = &Apache::loncoursedata::CL_SECTION();
3930: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
3931: $idx{status} = &Apache::loncoursedata::CL_STATUS();
3932:
3933: if (grep(/^st$/,@{$roles})) {
3934: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
3935: my $now = time;
3936: foreach my $student (keys(%{$classlist})) {
3937: my $match = 0;
3938: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
3939: unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
3940: @{$sections})) {
3941: next;
3942: }
3943: }
3944: if (defined($$types{'active'})) {
3945: if ($$classlist{$student}[$idx{status}] eq 'Active') {
3946: push(@{$$users{st}{$student}},'active');
3947: $match = 1;
3948: }
3949: }
3950: if (defined($$types{'previous'})) {
3951: if ($$classlist{$student}[$idx{end}] <= $now) {
3952: push(@{$$users{st}{$student}},'previous');
3953: $match = 1;
3954: }
3955: }
3956: if (defined($$types{'future'})) {
3957: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
3958: push(@{$$users{st}{$student}},'future');
3959: $match = 1;
3960: }
3961: }
3962: if ($match && defined($userdata)) {
3963: $$userdata{$student} = $$classlist{$student};
3964: }
3965: }
3966: }
3967: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
3968: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
3969: foreach my $person (@coursepersonnel) {
3970: my $match = 0;
3971: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
3972: $user =~ s/:$//;
3973: if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
3974: my ($uname,$udom,$usec) = split(/:/,$user);
3975: if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
3976: @{$sections} > 0) {
3977: unless(grep(/^\Q$usec\E$/,@{$sections})) {
3978: next;
3979: }
3980: }
3981: if ($uname ne '' && $udom ne '') {
3982: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
3983: foreach my $type (keys(%{$types})) {
3984: if ($status eq $type) {
3985: @{$$users{$role}{$user}} = $type;
3986: $match = 1;
3987: }
3988: }
3989: if ($match && defined($userdata) &&
3990: !exists($$userdata{$uname.':'.$udom})) {
3991: &get_user_info($udom,$uname,\%idx,$userdata);
3992: }
3993: }
3994: }
3995: }
3996: if (grep(/^ow$/,@{$roles})) {
3997: if ((defined($cdom)) && (defined($cnum))) {
3998: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
3999: if ( defined($csettings{'internal.courseowner'}) ) {
4000: my $owner = $csettings{'internal.courseowner'};
4001: @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
4002: if (defined($userdata) &&
4003: !exists($$userdata{$owner.':'.$cdom})) {
4004: &get_user_info($cdom,$owner,\%idx,$userdata);
4005: }
4006: }
4007: }
4008: }
4009: }
4010: return;
4011: }
4012:
4013: sub get_user_info {
4014: my ($udom,$uname,$idx,$userdata) = @_;
4015: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
4016: &plainname($uname,$udom,'lastname');
4017: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
4018: $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
4019: return;
4020: }
4021:
4022: =pod
4023:
4024: =item * get_unprocessed_cgi($query,$possible_names)
4025:
4026: Modify the %env hash to contain unprocessed CGI form parameters held in
4027: $query. The parameters listed in $possible_names (an array reference),
4028: will be set in $env{'form.name'} if they do not already exist.
4029:
4030: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
4031: $possible_names is an ref to an array of form element names. As an example:
4032: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
4033: will result in $env{'form.uname'} and $env{'form.udom'} being set.
4034:
4035: =cut
4036:
4037: sub get_unprocessed_cgi {
4038: my ($query,$possible_names)= @_;
4039: # $Apache::lonxml::debug=1;
4040: foreach my $pair (split(/&/,$query)) {
4041: my ($name, $value) = split(/=/,$pair);
4042: $name = &Apache::lonnet::unescape($name);
4043: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
4044: $value =~ tr/+/ /;
4045: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
4046: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
4047: }
4048: }
4049: }
4050:
4051: =pod
4052:
4053: =item * cacheheader()
4054:
4055: returns cache-controlling header code
4056:
4057: =cut
4058:
4059: sub cacheheader {
4060: unless ($env{'request.method'} eq 'GET') { return ''; }
4061: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
4062: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
4063: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
4064: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
4065: return $output;
4066: }
4067:
4068: =pod
4069:
4070: =item * no_cache($r)
4071:
4072: specifies header code to not have cache
4073:
4074: =cut
4075:
4076: sub no_cache {
4077: my ($r) = @_;
4078: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
4079: $env{'request.method'} ne 'GET') { return ''; }
4080: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
4081: $r->no_cache(1);
4082: $r->header_out("Expires" => $date);
4083: $r->header_out("Pragma" => "no-cache");
4084: }
4085:
4086: sub content_type {
4087: my ($r,$type,$charset) = @_;
4088: if ($r) {
4089: # Note that printout.pl calls this with undef for $r.
4090: &no_cache($r);
4091: }
4092: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
4093: unless ($charset) {
4094: $charset=&Apache::lonlocal::current_encoding;
4095: }
4096: if ($charset) { $type.='; charset='.$charset; }
4097: if ($r) {
4098: $r->content_type($type);
4099: } else {
4100: print("Content-type: $type\n\n");
4101: }
4102: }
4103:
4104: =pod
4105:
4106: =item * add_to_env($name,$value)
4107:
4108: adds $name to the %env hash with value
4109: $value, if $name already exists, the entry is converted to an array
4110: reference and $value is added to the array.
4111:
4112: =cut
4113:
4114: sub add_to_env {
4115: my ($name,$value)=@_;
4116: if (defined($env{$name})) {
4117: if (ref($env{$name})) {
4118: #already have multiple values
4119: push(@{ $env{$name} },$value);
4120: } else {
4121: #first time seeing multiple values, convert hash entry to an arrayref
4122: my $first=$env{$name};
4123: undef($env{$name});
4124: push(@{ $env{$name} },$first,$value);
4125: }
4126: } else {
4127: $env{$name}=$value;
4128: }
4129: }
4130:
4131: =pod
4132:
4133: =item * get_env_multiple($name)
4134:
4135: gets $name from the %env hash, it seemlessly handles the cases where multiple
4136: values may be defined and end up as an array ref.
4137:
4138: returns an array of values
4139:
4140: =cut
4141:
4142: sub get_env_multiple {
4143: my ($name) = @_;
4144: my @values;
4145: if (defined($env{$name})) {
4146: # exists is it an array
4147: if (ref($env{$name})) {
4148: @values=@{ $env{$name} };
4149: } else {
4150: $values[0]=$env{$name};
4151: }
4152: }
4153: return(@values);
4154: }
4155:
4156:
4157: =pod
4158:
4159: =back
4160:
4161: =head1 CSV Upload/Handling functions
4162:
4163: =over 4
4164:
4165: =item * upfile_store($r)
4166:
4167: Store uploaded file, $r should be the HTTP Request object,
4168: needs $env{'form.upfile'}
4169: returns $datatoken to be put into hidden field
4170:
4171: =cut
4172:
4173: sub upfile_store {
4174: my $r=shift;
4175: $env{'form.upfile'}=~s/\r/\n/gs;
4176: $env{'form.upfile'}=~s/\f/\n/gs;
4177: $env{'form.upfile'}=~s/\n+/\n/gs;
4178: $env{'form.upfile'}=~s/\n+$//gs;
4179:
4180: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
4181: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
4182: {
4183: my $datafile = $r->dir_config('lonDaemons').
4184: '/tmp/'.$datatoken.'.tmp';
4185: if ( open(my $fh,">$datafile") ) {
4186: print $fh $env{'form.upfile'};
4187: close($fh);
4188: }
4189: }
4190: return $datatoken;
4191: }
4192:
4193: =pod
4194:
4195: =item * load_tmp_file($r)
4196:
4197: Load uploaded file from tmp, $r should be the HTTP Request object,
4198: needs $env{'form.datatoken'},
4199: sets $env{'form.upfile'} to the contents of the file
4200:
4201: =cut
4202:
4203: sub load_tmp_file {
4204: my $r=shift;
4205: my @studentdata=();
4206: {
4207: my $studentfile = $r->dir_config('lonDaemons').
4208: '/tmp/'.$env{'form.datatoken'}.'.tmp';
4209: if ( open(my $fh,"<$studentfile") ) {
4210: @studentdata=<$fh>;
4211: close($fh);
4212: }
4213: }
4214: $env{'form.upfile'}=join('',@studentdata);
4215: }
4216:
4217: =pod
4218:
4219: =item * upfile_record_sep()
4220:
4221: Separate uploaded file into records
4222: returns array of records,
4223: needs $env{'form.upfile'} and $env{'form.upfiletype'}
4224:
4225: =cut
4226:
4227: sub upfile_record_sep {
4228: if ($env{'form.upfiletype'} eq 'xml') {
4229: } else {
4230: my @records;
4231: foreach my $line (split(/\n/,$env{'form.upfile'})) {
4232: if ($line=~/^\s*$/) { next; }
4233: push(@records,$line);
4234: }
4235: return @records;
4236: }
4237: }
4238:
4239: =pod
4240:
4241: =item * record_sep($record)
4242:
4243: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
4244:
4245: =cut
4246:
4247: sub takeleft {
4248: my $index=shift;
4249: return substr('0000'.$index,-4,4);
4250: }
4251:
4252: sub record_sep {
4253: my $record=shift;
4254: my %components=();
4255: if ($env{'form.upfiletype'} eq 'xml') {
4256: } elsif ($env{'form.upfiletype'} eq 'space') {
4257: my $i=0;
4258: foreach my $field (split(/\s+/,$record)) {
4259: $field=~s/^(\"|\')//;
4260: $field=~s/(\"|\')$//;
4261: $components{&takeleft($i)}=$field;
4262: $i++;
4263: }
4264: } elsif ($env{'form.upfiletype'} eq 'tab') {
4265: my $i=0;
4266: foreach my $field (split(/\t/,$record)) {
4267: $field=~s/^(\"|\')//;
4268: $field=~s/(\"|\')$//;
4269: $components{&takeleft($i)}=$field;
4270: $i++;
4271: }
4272: } else {
4273: my @allfields=split(/\,/,$record);
4274: my $i=0;
4275: my $j;
4276: for ($j=0;$j<=$#allfields;$j++) {
4277: my $field=$allfields[$j];
4278: if ($field=~/^\s*(\"|\')/) {
4279: my $delimiter=$1;
4280: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
4281: $j++;
4282: $field.=','.$allfields[$j];
4283: }
4284: $field=~s/^\s*$delimiter//;
4285: $field=~s/$delimiter\s*$//;
4286: }
4287: $components{&takeleft($i)}=$field;
4288: $i++;
4289: }
4290: }
4291: return %components;
4292: }
4293:
4294: ######################################################
4295: ######################################################
4296:
4297: =pod
4298:
4299: =item * upfile_select_html()
4300:
4301: Return HTML code to select a file from the users machine and specify
4302: the file type.
4303:
4304: =cut
4305:
4306: ######################################################
4307: ######################################################
4308: sub upfile_select_html {
4309: my %Types = (
4310: csv => &mt('CSV (comma separated values, spreadsheet)'),
4311: space => &mt('Space separated'),
4312: tab => &mt('Tabulator separated'),
4313: # xml => &mt('HTML/XML'),
4314: );
4315: my $Str = '<input type="file" name="upfile" size="50" />'.
4316: '<br />Type: <select name="upfiletype">';
4317: foreach my $type (sort(keys(%Types))) {
4318: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
4319: }
4320: $Str .= "</select>\n";
4321: return $Str;
4322: }
4323:
4324: sub get_samples {
4325: my ($records,$toget) = @_;
4326: my @samples=({});
4327: my $got=0;
4328: foreach my $rec (@$records) {
4329: my %temp = &record_sep($rec);
4330: if (! grep(/\S/, values(%temp))) { next; }
4331: if (%temp) {
4332: $samples[$got]=\%temp;
4333: $got++;
4334: if ($got == $toget) { last; }
4335: }
4336: }
4337: return \@samples;
4338: }
4339:
4340: ######################################################
4341: ######################################################
4342:
4343: =pod
4344:
4345: =item * csv_print_samples($r,$records)
4346:
4347: Prints a table of sample values from each column uploaded $r is an
4348: Apache Request ref, $records is an arrayref from
4349: &Apache::loncommon::upfile_record_sep
4350:
4351: =cut
4352:
4353: ######################################################
4354: ######################################################
4355: sub csv_print_samples {
4356: my ($r,$records) = @_;
4357: my $samples = &get_samples($records,3);
4358:
4359: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
4360: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4361: $r->print('<th>'.&mt('Column [_1]',($sample+1)).'</th>'); }
4362: $r->print('</tr>');
4363: foreach my $hash (@$samples) {
4364: $r->print('<tr>');
4365: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4366: $r->print('<td>');
4367: if (defined($$hash{$sample})) { $r->print($$hash{$sample}); }
4368: $r->print('</td>');
4369: }
4370: $r->print('</tr>');
4371: }
4372: $r->print('</tr></table><br />'."\n");
4373: }
4374:
4375: ######################################################
4376: ######################################################
4377:
4378: =pod
4379:
4380: =item * csv_print_select_table($r,$records,$d)
4381:
4382: Prints a table to create associations between values and table columns.
4383:
4384: $r is an Apache Request ref,
4385: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4386: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
4387:
4388: =cut
4389:
4390: ######################################################
4391: ######################################################
4392: sub csv_print_select_table {
4393: my ($r,$records,$d) = @_;
4394: my $i=0;
4395: my $samples = &get_samples($records,1);
4396: $r->print(&mt('Associate columns with student attributes.')."\n".
4397: '<table border="2"><tr>'.
4398: '<th>'.&mt('Attribute').'</th>'.
4399: '<th>'.&mt('Column').'</th></tr>'."\n");
4400: foreach my $array_ref (@$d) {
4401: my ($value,$display,$defaultcol)=@{ $array_ref };
4402: $r->print('<tr><td>'.$display.'</td>');
4403:
4404: $r->print('<td><select name=f'.$i.
4405: ' onchange="javascript:flip(this.form,'.$i.');">');
4406: $r->print('<option value="none"></option>');
4407: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4408: $r->print('<option value="'.$sample.'"'.
4409: ($sample eq $defaultcol ? ' selected="selected" ' : '').
4410: '>Column '.($sample+1).'</option>');
4411: }
4412: $r->print('</select></td></tr>'."\n");
4413: $i++;
4414: }
4415: $i--;
4416: return $i;
4417: }
4418:
4419: ######################################################
4420: ######################################################
4421:
4422: =pod
4423:
4424: =item * csv_samples_select_table($r,$records,$d)
4425:
4426: Prints a table of sample values from the upload and can make associate samples to internal names.
4427:
4428: $r is an Apache Request ref,
4429: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4430: $d is an array of 2 element arrays (internal name, displayed name)
4431:
4432: =cut
4433:
4434: ######################################################
4435: ######################################################
4436: sub csv_samples_select_table {
4437: my ($r,$records,$d) = @_;
4438: my $i=0;
4439: #
4440: my $samples = &get_samples($records,3);
4441: $r->print('<table border=2><tr><th>'.
4442: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
4443:
4444: foreach my $key (sort(keys(%{ $samples->[0] }))) {
4445: $r->print('<tr><td><select name="f'.$i.'"'.
4446: ' onchange="javascript:flip(this.form,'.$i.');">');
4447: foreach my $option (@$d) {
4448: my ($value,$display,$defaultcol)=@{ $option };
4449: $r->print('<option value="'.$value.'"'.
4450: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
4451: $display.'</option>');
4452: }
4453: $r->print('</select></td><td>');
4454: foreach my $line (0..2) {
4455: if (defined($samples->[$line]{$key})) {
4456: $r->print($samples->[$line]{$key}."<br />\n");
4457: }
4458: }
4459: $r->print('</td></tr>');
4460: $i++;
4461: }
4462: $i--;
4463: return($i);
4464: }
4465:
4466: ######################################################
4467: ######################################################
4468:
4469: =pod
4470:
4471: =item clean_excel_name($name)
4472:
4473: Returns a replacement for $name which does not contain any illegal characters.
4474:
4475: =cut
4476:
4477: ######################################################
4478: ######################################################
4479: sub clean_excel_name {
4480: my ($name) = @_;
4481: $name =~ s/[:\*\?\/\\]//g;
4482: if (length($name) > 31) {
4483: $name = substr($name,0,31);
4484: }
4485: return $name;
4486: }
4487:
4488: =pod
4489:
4490: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
4491:
4492: Returns either 1 or undef
4493:
4494: 1 if the part is to be hidden, undef if it is to be shown
4495:
4496: Arguments are:
4497:
4498: $id the id of the part to be checked
4499: $symb, optional the symb of the resource to check
4500: $udom, optional the domain of the user to check for
4501: $uname, optional the username of the user to check for
4502:
4503: =cut
4504:
4505: sub check_if_partid_hidden {
4506: my ($id,$symb,$udom,$uname) = @_;
4507: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
4508: $symb,$udom,$uname);
4509: my $truth=1;
4510: #if the string starts with !, then the list is the list to show not hide
4511: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
4512: my @hiddenlist=split(/,/,$hiddenparts);
4513: foreach my $checkid (@hiddenlist) {
4514: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
4515: }
4516: return !$truth;
4517: }
4518:
4519:
4520: ############################################################
4521: ############################################################
4522:
4523: =pod
4524:
4525: =back
4526:
4527: =head1 cgi-bin script and graphing routines
4528:
4529: =over 4
4530:
4531: =item get_cgi_id
4532:
4533: Inputs: none
4534:
4535: Returns an id which can be used to pass environment variables
4536: to various cgi-bin scripts. These environment variables will
4537: be removed from the users environment after a given time by
4538: the routine &Apache::lonnet::transfer_profile_to_env.
4539:
4540: =cut
4541:
4542: ############################################################
4543: ############################################################
4544: my $uniq=0;
4545: sub get_cgi_id {
4546: $uniq=($uniq+1)%100000;
4547: return (time.'_'.$$.'_'.$uniq);
4548: }
4549:
4550: ############################################################
4551: ############################################################
4552:
4553: =pod
4554:
4555: =item DrawBarGraph
4556:
4557: Facilitates the plotting of data in a (stacked) bar graph.
4558: Puts plot definition data into the users environment in order for
4559: graph.png to plot it. Returns an <img> tag for the plot.
4560: The bars on the plot are labeled '1','2',...,'n'.
4561:
4562: Inputs:
4563:
4564: =over 4
4565:
4566: =item $Title: string, the title of the plot
4567:
4568: =item $xlabel: string, text describing the X-axis of the plot
4569:
4570: =item $ylabel: string, text describing the Y-axis of the plot
4571:
4572: =item $Max: scalar, the maximum Y value to use in the plot
4573: If $Max is < any data point, the graph will not be rendered.
4574:
4575: =item $colors: array ref holding the colors to be used for the data sets when
4576: they are plotted. If undefined, default values will be used.
4577:
4578: =item $labels: array ref holding the labels to use on the x-axis for the bars.
4579:
4580: =item @Values: An array of array references. Each array reference holds data
4581: to be plotted in a stacked bar chart.
4582:
4583: =item If the final element of @Values is a hash reference the key/value
4584: pairs will be added to the graph definition.
4585:
4586: =back
4587:
4588: Returns:
4589:
4590: An <img> tag which references graph.png and the appropriate identifying
4591: information for the plot.
4592:
4593: =cut
4594:
4595: ############################################################
4596: ############################################################
4597: sub DrawBarGraph {
4598: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
4599: #
4600: if (! defined($colors)) {
4601: $colors = ['#33ff00',
4602: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
4603: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
4604: ];
4605: }
4606: my $extra_settings = {};
4607: if (ref($Values[-1]) eq 'HASH') {
4608: $extra_settings = pop(@Values);
4609: }
4610: #
4611: my $identifier = &get_cgi_id();
4612: my $id = 'cgi.'.$identifier;
4613: if (! @Values || ref($Values[0]) ne 'ARRAY') {
4614: return '';
4615: }
4616: #
4617: my @Labels;
4618: if (defined($labels)) {
4619: @Labels = @$labels;
4620: } else {
4621: for (my $i=0;$i<@{$Values[0]};$i++) {
4622: push (@Labels,$i+1);
4623: }
4624: }
4625: #
4626: my $NumBars = scalar(@{$Values[0]});
4627: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
4628: my %ValuesHash;
4629: my $NumSets=1;
4630: foreach my $array (@Values) {
4631: next if (! ref($array));
4632: $ValuesHash{$id.'.data.'.$NumSets++} =
4633: join(',',@$array);
4634: }
4635: #
4636: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
4637: if ($NumBars < 3) {
4638: $width = 120+$NumBars*32;
4639: $xskip = 1;
4640: $bar_width = 30;
4641: } elsif ($NumBars < 5) {
4642: $width = 120+$NumBars*20;
4643: $xskip = 1;
4644: $bar_width = 20;
4645: } elsif ($NumBars < 10) {
4646: $width = 120+$NumBars*15;
4647: $xskip = 1;
4648: $bar_width = 15;
4649: } elsif ($NumBars <= 25) {
4650: $width = 120+$NumBars*11;
4651: $xskip = 5;
4652: $bar_width = 8;
4653: } elsif ($NumBars <= 50) {
4654: $width = 120+$NumBars*8;
4655: $xskip = 5;
4656: $bar_width = 4;
4657: } else {
4658: $width = 120+$NumBars*8;
4659: $xskip = 5;
4660: $bar_width = 4;
4661: }
4662: #
4663: $Max = 1 if ($Max < 1);
4664: if ( int($Max) < $Max ) {
4665: $Max++;
4666: $Max = int($Max);
4667: }
4668: $Title = '' if (! defined($Title));
4669: $xlabel = '' if (! defined($xlabel));
4670: $ylabel = '' if (! defined($ylabel));
4671: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
4672: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
4673: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
4674: $ValuesHash{$id.'.y_max_value'} = $Max;
4675: $ValuesHash{$id.'.NumBars'} = $NumBars;
4676: $ValuesHash{$id.'.NumSets'} = $NumSets;
4677: $ValuesHash{$id.'.PlotType'} = 'bar';
4678: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4679: $ValuesHash{$id.'.height'} = $height;
4680: $ValuesHash{$id.'.width'} = $width;
4681: $ValuesHash{$id.'.xskip'} = $xskip;
4682: $ValuesHash{$id.'.bar_width'} = $bar_width;
4683: $ValuesHash{$id.'.labels'} = join(',',@Labels);
4684: #
4685: # Deal with other parameters
4686: while (my ($key,$value) = each(%$extra_settings)) {
4687: $ValuesHash{$id.'.'.$key} = $value;
4688: }
4689: #
4690: &Apache::lonnet::appenv(%ValuesHash);
4691: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4692: }
4693:
4694: ############################################################
4695: ############################################################
4696:
4697: =pod
4698:
4699: =item DrawXYGraph
4700:
4701: Facilitates the plotting of data in an XY graph.
4702: Puts plot definition data into the users environment in order for
4703: graph.png to plot it. Returns an <img> tag for the plot.
4704:
4705: Inputs:
4706:
4707: =over 4
4708:
4709: =item $Title: string, the title of the plot
4710:
4711: =item $xlabel: string, text describing the X-axis of the plot
4712:
4713: =item $ylabel: string, text describing the Y-axis of the plot
4714:
4715: =item $Max: scalar, the maximum Y value to use in the plot
4716: If $Max is < any data point, the graph will not be rendered.
4717:
4718: =item $colors: Array ref containing the hex color codes for the data to be
4719: plotted in. If undefined, default values will be used.
4720:
4721: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4722:
4723: =item $Ydata: Array ref containing Array refs.
4724: Each of the contained arrays will be plotted as a separate curve.
4725:
4726: =item %Values: hash indicating or overriding any default values which are
4727: passed to graph.png.
4728: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4729:
4730: =back
4731:
4732: Returns:
4733:
4734: An <img> tag which references graph.png and the appropriate identifying
4735: information for the plot.
4736:
4737: =cut
4738:
4739: ############################################################
4740: ############################################################
4741: sub DrawXYGraph {
4742: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
4743: #
4744: # Create the identifier for the graph
4745: my $identifier = &get_cgi_id();
4746: my $id = 'cgi.'.$identifier;
4747: #
4748: $Title = '' if (! defined($Title));
4749: $xlabel = '' if (! defined($xlabel));
4750: $ylabel = '' if (! defined($ylabel));
4751: my %ValuesHash =
4752: (
4753: $id.'.title' => &Apache::lonnet::escape($Title),
4754: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4755: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4756: $id.'.y_max_value'=> $Max,
4757: $id.'.labels' => join(',',@$Xlabels),
4758: $id.'.PlotType' => 'XY',
4759: );
4760: #
4761: if (defined($colors) && ref($colors) eq 'ARRAY') {
4762: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4763: }
4764: #
4765: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
4766: return '';
4767: }
4768: my $NumSets=1;
4769: foreach my $array (@{$Ydata}){
4770: next if (! ref($array));
4771: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4772: }
4773: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
4774: #
4775: # Deal with other parameters
4776: while (my ($key,$value) = each(%Values)) {
4777: $ValuesHash{$id.'.'.$key} = $value;
4778: }
4779: #
4780: &Apache::lonnet::appenv(%ValuesHash);
4781: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4782: }
4783:
4784: ############################################################
4785: ############################################################
4786:
4787: =pod
4788:
4789: =item DrawXYYGraph
4790:
4791: Facilitates the plotting of data in an XY graph with two Y axes.
4792: Puts plot definition data into the users environment in order for
4793: graph.png to plot it. Returns an <img> tag for the plot.
4794:
4795: Inputs:
4796:
4797: =over 4
4798:
4799: =item $Title: string, the title of the plot
4800:
4801: =item $xlabel: string, text describing the X-axis of the plot
4802:
4803: =item $ylabel: string, text describing the Y-axis of the plot
4804:
4805: =item $colors: Array ref containing the hex color codes for the data to be
4806: plotted in. If undefined, default values will be used.
4807:
4808: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4809:
4810: =item $Ydata1: The first data set
4811:
4812: =item $Min1: The minimum value of the left Y-axis
4813:
4814: =item $Max1: The maximum value of the left Y-axis
4815:
4816: =item $Ydata2: The second data set
4817:
4818: =item $Min2: The minimum value of the right Y-axis
4819:
4820: =item $Max2: The maximum value of the left Y-axis
4821:
4822: =item %Values: hash indicating or overriding any default values which are
4823: passed to graph.png.
4824: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4825:
4826: =back
4827:
4828: Returns:
4829:
4830: An <img> tag which references graph.png and the appropriate identifying
4831: information for the plot.
4832:
4833: =cut
4834:
4835: ############################################################
4836: ############################################################
4837: sub DrawXYYGraph {
4838: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4839: $Ydata2,$Min2,$Max2,%Values)=@_;
4840: #
4841: # Create the identifier for the graph
4842: my $identifier = &get_cgi_id();
4843: my $id = 'cgi.'.$identifier;
4844: #
4845: $Title = '' if (! defined($Title));
4846: $xlabel = '' if (! defined($xlabel));
4847: $ylabel = '' if (! defined($ylabel));
4848: my %ValuesHash =
4849: (
4850: $id.'.title' => &Apache::lonnet::escape($Title),
4851: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4852: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4853: $id.'.labels' => join(',',@$Xlabels),
4854: $id.'.PlotType' => 'XY',
4855: $id.'.NumSets' => 2,
4856: $id.'.two_axes' => 1,
4857: $id.'.y1_max_value' => $Max1,
4858: $id.'.y1_min_value' => $Min1,
4859: $id.'.y2_max_value' => $Max2,
4860: $id.'.y2_min_value' => $Min2,
4861: );
4862: #
4863: if (defined($colors) && ref($colors) eq 'ARRAY') {
4864: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4865: }
4866: #
4867: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4868: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
4869: return '';
4870: }
4871: my $NumSets=1;
4872: foreach my $array ($Ydata1,$Ydata2){
4873: next if (! ref($array));
4874: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4875: }
4876: #
4877: # Deal with other parameters
4878: while (my ($key,$value) = each(%Values)) {
4879: $ValuesHash{$id.'.'.$key} = $value;
4880: }
4881: #
4882: &Apache::lonnet::appenv(%ValuesHash);
4883: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4884: }
4885:
4886: ############################################################
4887: ############################################################
4888:
4889: =pod
4890:
4891: =back
4892:
4893: =head1 Statistics helper routines?
4894:
4895: Bad place for them but what the hell.
4896:
4897: =over 4
4898:
4899: =item &chartlink
4900:
4901: Returns a link to the chart for a specific student.
4902:
4903: Inputs:
4904:
4905: =over 4
4906:
4907: =item $linktext: The text of the link
4908:
4909: =item $sname: The students username
4910:
4911: =item $sdomain: The students domain
4912:
4913: =back
4914:
4915: =back
4916:
4917: =cut
4918:
4919: ############################################################
4920: ############################################################
4921: sub chartlink {
4922: my ($linktext, $sname, $sdomain) = @_;
4923: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
4924: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
4925: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
4926: '">'.$linktext.'</a>';
4927: }
4928:
4929: #######################################################
4930: #######################################################
4931:
4932: =pod
4933:
4934: =head1 Course Environment Routines
4935:
4936: =over 4
4937:
4938: =item &restore_course_settings
4939:
4940: =item &store_course_settings
4941:
4942: Restores/Store indicated form parameters from the course environment.
4943: Will not overwrite existing values of the form parameters.
4944:
4945: Inputs:
4946: a scalar describing the data (e.g. 'chart', 'problem_analysis')
4947:
4948: a hash ref describing the data to be stored. For example:
4949:
4950: %Save_Parameters = ('Status' => 'scalar',
4951: 'chartoutputmode' => 'scalar',
4952: 'chartoutputdata' => 'scalar',
4953: 'Section' => 'array',
4954: 'StudentData' => 'array',
4955: 'Maps' => 'array');
4956:
4957: Returns: both routines return nothing
4958:
4959: =cut
4960:
4961: #######################################################
4962: #######################################################
4963: sub store_course_settings {
4964: # save to the environment
4965: # appenv the same items, just to be safe
4966: my $courseid = $env{'request.course.id'};
4967: my $udom = $env{'user.domain'};
4968: my $uname = $env{'user.name'};
4969: my ($prefix,$Settings) = @_;
4970: my %SaveHash;
4971: my %AppHash;
4972: while (my ($setting,$type) = each(%$Settings)) {
4973: my $basename = join('.','internal',$courseid,$prefix,$setting);
4974: my $envname = 'environment.'.$basename;
4975: if (exists($env{'form.'.$setting})) {
4976: # Save this value away
4977: if ($type eq 'scalar' &&
4978: (! exists($env{$envname}) ||
4979: $env{$envname} ne $env{'form.'.$setting})) {
4980: $SaveHash{$basename} = $env{'form.'.$setting};
4981: $AppHash{$envname} = $env{'form.'.$setting};
4982: } elsif ($type eq 'array') {
4983: my $stored_form;
4984: if (ref($env{'form.'.$setting})) {
4985: $stored_form = join(',',
4986: map {
4987: &Apache::lonnet::escape($_);
4988: } sort(@{$env{'form.'.$setting}}));
4989: } else {
4990: $stored_form =
4991: &Apache::lonnet::escape($env{'form.'.$setting});
4992: }
4993: # Determine if the array contents are the same.
4994: if ($stored_form ne $env{$envname}) {
4995: $SaveHash{$basename} = $stored_form;
4996: $AppHash{$envname} = $stored_form;
4997: }
4998: }
4999: }
5000: }
5001: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
5002: $udom,$uname);
5003: if ($put_result !~ /^(ok|delayed)/) {
5004: &Apache::lonnet::logthis('unable to save form parameters, '.
5005: 'got error:'.$put_result);
5006: }
5007: # Make sure these settings stick around in this session, too
5008: &Apache::lonnet::appenv(%AppHash);
5009: return;
5010: }
5011:
5012: sub restore_course_settings {
5013: my $courseid = $env{'request.course.id'};
5014: my ($prefix,$Settings) = @_;
5015: while (my ($setting,$type) = each(%$Settings)) {
5016: next if (exists($env{'form.'.$setting}));
5017: my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
5018: '.'.$setting;
5019: if (exists($env{$envname})) {
5020: if ($type eq 'scalar') {
5021: $env{'form.'.$setting} = $env{$envname};
5022: } elsif ($type eq 'array') {
5023: $env{'form.'.$setting} = [
5024: map {
5025: &Apache::lonnet::unescape($_);
5026: } split(',',$env{$envname})
5027: ];
5028: }
5029: }
5030: }
5031: }
5032:
5033: ############################################################
5034: ############################################################
5035:
5036: sub propath {
5037: my ($udom,$uname)=@_;
5038: $udom=~s/\W//g;
5039: $uname=~s/\W//g;
5040: my $subdir=$uname.'__';
5041: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
5042: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
5043: return $proname;
5044: }
5045:
5046: sub icon {
5047: my ($file)=@_;
5048: my $curfext = (split(/\./,$file))[-1];
5049: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
5050: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
5051: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
5052: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
5053: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
5054: $curfext.".gif") {
5055: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
5056: $curfext.".gif";
5057: }
5058: }
5059: return &lonhttpdurl($iconname);
5060: }
5061:
5062: sub lonhttpdurl {
5063: my ($url)=@_;
5064: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
5065: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
5066: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
5067: }
5068:
5069: sub connection_aborted {
5070: my ($r)=@_;
5071: $r->print(" ");$r->rflush();
5072: my $c = $r->connection;
5073: return $c->aborted();
5074: }
5075:
5076: # Escapes strings that may have embedded 's that will be put into
5077: # strings as 'strings'.
5078: sub escape_single {
5079: my ($input) = @_;
5080: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
5081: $input =~ s/\'/\\\'/g; # Esacpe the 's....
5082: return $input;
5083: }
5084:
5085: # Same as escape_single, but escape's "'s This
5086: # can be used for "strings"
5087: sub escape_double {
5088: my ($input) = @_;
5089: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
5090: $input =~ s/\"/\\\"/g; # Esacpe the "s....
5091: return $input;
5092: }
5093:
5094: # Escapes the last element of a full URL.
5095: sub escape_url {
5096: my ($url) = @_;
5097: my @urlslices = split(/\//, $url,-1);
5098: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
5099: return join('/',@urlslices).'/'.$lastitem;
5100: }
5101: =pod
5102:
5103: =back
5104:
5105: =cut
5106:
5107: 1;
5108: __END__;
5109:
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