1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.369 2006/05/11 19:04:31 www 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: use LONCAPA;
68:
69: my $readit;
70:
71: ##
72: ## Global Variables
73: ##
74:
75: # ----------------------------------------------- Filetypes/Languages/Copyright
76: my %language;
77: my %supported_language;
78: my %cprtag;
79: my %scprtag;
80: my %fe; my %fd; my %fm;
81: my %category_extensions;
82:
83: # ---------------------------------------------- Designs
84:
85: my %designhash;
86:
87: # ---------------------------------------------- Thesaurus variables
88: #
89: # %Keywords:
90: # A hash used by &keyword to determine if a word is considered a keyword.
91: # $thesaurus_db_file
92: # Scalar containing the full path to the thesaurus database.
93:
94: my %Keywords;
95: my $thesaurus_db_file;
96:
97: #
98: # Initialize values from language.tab, copyright.tab, filetypes.tab,
99: # thesaurus.tab, and filecategories.tab.
100: #
101: BEGIN {
102: # Variable initialization
103: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
104: #
105: unless ($readit) {
106: # ------------------------------------------------------------------- languages
107: {
108: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
109: '/language.tab';
110: if ( open(my $fh,"<$langtabfile") ) {
111: while (my $line = <$fh>) {
112: next if ($line=~/^\#/);
113: chomp($line);
114: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$line));
115: $language{$key}=$val.' - '.$enc;
116: if ($sup) {
117: $supported_language{$key}=$sup;
118: }
119: }
120: close($fh);
121: }
122: }
123: # ------------------------------------------------------------------ copyrights
124: {
125: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
126: '/copyright.tab';
127: if ( open (my $fh,"<$copyrightfile") ) {
128: while (my $line = <$fh>) {
129: next if ($line=~/^\#/);
130: chomp($line);
131: my ($key,$val)=(split(/\s+/,$line,2));
132: $cprtag{$key}=$val;
133: }
134: close($fh);
135: }
136: }
137: # ----------------------------------------------------------- source copyrights
138: {
139: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
140: '/source_copyright.tab';
141: if ( open (my $fh,"<$sourcecopyrightfile") ) {
142: while (my $line = <$fh>) {
143: next if ($line =~ /^\#/);
144: chomp($line);
145: my ($key,$val)=(split(/\s+/,$line,2));
146: $scprtag{$key}=$val;
147: }
148: close($fh);
149: }
150: }
151:
152: # -------------------------------------------------------------- domain designs
153:
154: my $filename;
155: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
156: opendir(DIR,$designdir);
157: while ($filename=readdir(DIR)) {
158: if ($filename!~/\.tab$/) { next; }
159: my ($domain)=($filename=~/^(\w+)\./);
160: {
161: my $designfile = $designdir.'/'.$filename;
162: if ( open (my $fh,"<$designfile") ) {
163: while (my $line = <$fh>) {
164: next if ($line =~ /^\#/);
165: chomp($line);
166: my ($key,$val)=(split(/\=/,$line));
167: if ($val) { $designhash{$domain.'.'.$key}=$val; }
168: }
169: close($fh);
170: }
171: }
172:
173: }
174: closedir(DIR);
175:
176:
177: # ------------------------------------------------------------- file categories
178: {
179: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
180: '/filecategories.tab';
181: if ( open (my $fh,"<$categoryfile") ) {
182: while (my $line = <$fh>) {
183: next if ($line =~ /^\#/);
184: chomp($line);
185: my ($extension,$category)=(split(/\s+/,$line,2));
186: push @{$category_extensions{lc($category)}},$extension;
187: }
188: close($fh);
189: }
190:
191: }
192: # ------------------------------------------------------------------ file types
193: {
194: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
195: '/filetypes.tab';
196: if ( open (my $fh,"<$typesfile") ) {
197: while (my $line = <$fh>) {
198: next if ($line =~ /^\#/);
199: chomp($line);
200: my ($ending,$emb,$mime,$descr)=split(/\s+/,$line,4);
201: if ($descr ne '') {
202: $fe{$ending}=lc($emb);
203: $fd{$ending}=$descr;
204: if ($mime ne 'unk') { $fm{$ending}=$mime; }
205: }
206: }
207: close($fh);
208: }
209: }
210: &Apache::lonnet::logthis(
211: "<font color=yellow>INFO: Read file types</font>");
212: $readit=1;
213: } # end of unless($readit)
214:
215: }
216:
217: ###############################################################
218: ## HTML and Javascript Helper Functions ##
219: ###############################################################
220:
221: =pod
222:
223: =head1 HTML and Javascript Functions
224:
225: =over 4
226:
227: =item * browser_and_searcher_javascript ()
228:
229: X<browsing, javascript>X<searching, javascript>Returns a string
230: containing javascript with two functions, C<openbrowser> and
231: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
232: tags.
233:
234: =item * openbrowser(formname,elementname,only,omit) [javascript]
235:
236: inputs: formname, elementname, only, omit
237:
238: formname and elementname indicate the name of the html form and name of
239: the element that the results of the browsing selection are to be placed in.
240:
241: Specifying 'only' will restrict the browser to displaying only files
242: with the given extension. Can be a comma separated list.
243:
244: Specifying 'omit' will restrict the browser to NOT displaying files
245: with the given extension. Can be a comma separated list.
246:
247: =item * opensearcher(formname, elementname) [javascript]
248:
249: Inputs: formname, elementname
250:
251: formname and elementname specify the name of the html form and the name
252: of the element the selection from the search results will be placed in.
253:
254: =cut
255:
256: sub browser_and_searcher_javascript {
257: my ($mode)=@_;
258: if (!defined($mode)) { $mode='edit'; }
259: my $resurl=&lastresurl();
260: return <<END;
261: // <!-- BEGIN LON-CAPA Internal
262: var editbrowser = null;
263: function openbrowser(formname,elementname,only,omit,titleelement) {
264: var url = '$resurl/?';
265: if (editbrowser == null) {
266: url += 'launch=1&';
267: }
268: url += 'catalogmode=interactive&';
269: url += 'mode=$mode&';
270: url += 'form=' + formname + '&';
271: if (only != null) {
272: url += 'only=' + only + '&';
273: } else {
274: url += 'only=&';
275: }
276: if (omit != null) {
277: url += 'omit=' + omit + '&';
278: } else {
279: url += 'omit=&';
280: }
281: if (titleelement != null) {
282: url += 'titleelement=' + titleelement + '&';
283: } else {
284: url += 'titleelement=&';
285: }
286: url += 'element=' + elementname + '';
287: var title = 'Browser';
288: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
289: options += ',width=700,height=600';
290: editbrowser = open(url,title,options,'1');
291: editbrowser.focus();
292: }
293: var editsearcher;
294: function opensearcher(formname,elementname,titleelement) {
295: var url = '/adm/searchcat?';
296: if (editsearcher == null) {
297: url += 'launch=1&';
298: }
299: url += 'catalogmode=interactive&';
300: url += 'mode=$mode&';
301: url += 'form=' + formname + '&';
302: if (titleelement != null) {
303: url += 'titleelement=' + titleelement + '&';
304: } else {
305: url += 'titleelement=&';
306: }
307: url += 'element=' + elementname + '';
308: var title = 'Search';
309: var options = 'scrollbars=1,resizable=1,menubar=0';
310: options += ',width=700,height=600';
311: editsearcher = open(url,title,options,'1');
312: editsearcher.focus();
313: }
314: // END LON-CAPA Internal -->
315: END
316: }
317:
318: sub lastresurl {
319: if ($env{'environment.lastresurl'}) {
320: return $env{'environment.lastresurl'}
321: } else {
322: return '/res';
323: }
324: }
325:
326: sub storeresurl {
327: my $resurl=&Apache::lonnet::clutter(shift);
328: unless ($resurl=~/^\/res/) { return 0; }
329: $resurl=~s/\/$//;
330: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
331: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
332: return 1;
333: }
334:
335: sub studentbrowser_javascript {
336: unless (
337: (($env{'request.course.id'}) &&
338: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
339: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
340: '/'.$env{'request.course.sec'})
341: ))
342: || ($env{'request.role'}=~/^(au|dc|su)/)
343: ) { return ''; }
344: return (<<'ENDSTDBRW');
345: <script type="text/javascript" language="Javascript" >
346: var stdeditbrowser;
347: function openstdbrowser(formname,uname,udom,roleflag) {
348: var url = '/adm/pickstudent?';
349: var filter;
350: eval('filter=document.'+formname+'.'+uname+'.value;');
351: if (filter != null) {
352: if (filter != '') {
353: url += 'filter='+filter+'&';
354: }
355: }
356: url += 'form=' + formname + '&unameelement='+uname+
357: '&udomelement='+udom;
358: if (roleflag) { url+="&roles=1"; }
359: var title = 'Student_Browser';
360: var options = 'scrollbars=1,resizable=1,menubar=0';
361: options += ',width=700,height=600';
362: stdeditbrowser = open(url,title,options,'1');
363: stdeditbrowser.focus();
364: }
365: </script>
366: ENDSTDBRW
367: }
368:
369: sub selectstudent_link {
370: my ($form,$unameele,$udomele)=@_;
371: if ($env{'request.course.id'}) {
372: if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
373: && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
374: '/'.$env{'request.course.sec'})) {
375: return '';
376: }
377: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
378: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
379: }
380: if ($env{'request.role'}=~/^(au|dc|su)/) {
381: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
382: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
383: }
384: return '';
385: }
386:
387: sub coursebrowser_javascript {
388: my ($domainfilter)=@_;
389: return (<<ENDSTDBRW);
390: <script type="text/javascript" language="Javascript" >
391: var stdeditbrowser;
392: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
393: var url = '/adm/pickcourse?';
394: var filter;
395: if (filter != null) {
396: if (filter != '') {
397: url += 'filter='+filter+'&';
398: }
399: }
400: var domainfilter='$domainfilter';
401: if (domainfilter != null) {
402: if (domainfilter != '') {
403: url += 'domainfilter='+domainfilter+'&';
404: }
405: }
406: url += 'form=' + formname + '&cnumelement='+uname+
407: '&cdomelement='+udom+
408: '&cnameelement='+desc;
409: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
410: url += '&roleelement='+extra_element;
411: if (domainfilter == null || domainfilter == '') {
412: url += '&domainfilter='+extra_element;
413: }
414: }
415: if (multflag !=null && multflag != '') {
416: url += '&multiple='+multflag;
417: }
418: var title = 'Course_Browser';
419: var options = 'scrollbars=1,resizable=1,menubar=0';
420: options += ',width=700,height=600';
421: stdeditbrowser = open(url,title,options,'1');
422: stdeditbrowser.focus();
423: }
424: </script>
425: ENDSTDBRW
426: }
427:
428: sub selectcourse_link {
429: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
430: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
431: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
432: }
433:
434: sub check_uncheck_jscript {
435: my $jscript = <<"ENDSCRT";
436: function checkAll(field) {
437: if (field.length > 0) {
438: for (i = 0; i < field.length; i++) {
439: field[i].checked = true ;
440: }
441: } else {
442: field.checked = true
443: }
444: }
445:
446: function uncheckAll(field) {
447: if (field.length > 0) {
448: for (i = 0; i < field.length; i++) {
449: field[i].checked = false ;
450: } } else {
451: field.checked = false ;
452: }
453: }
454: ENDSCRT
455: return $jscript;
456: }
457:
458:
459: =pod
460:
461: =item * linked_select_forms(...)
462:
463: linked_select_forms returns a string containing a <script></script> block
464: and html for two <select> menus. The select menus will be linked in that
465: changing the value of the first menu will result in new values being placed
466: in the second menu. The values in the select menu will appear in alphabetical
467: order.
468:
469: linked_select_forms takes the following ordered inputs:
470:
471: =over 4
472:
473: =item * $formname, the name of the <form> tag
474:
475: =item * $middletext, the text which appears between the <select> tags
476:
477: =item * $firstdefault, the default value for the first menu
478:
479: =item * $firstselectname, the name of the first <select> tag
480:
481: =item * $secondselectname, the name of the second <select> tag
482:
483: =item * $hashref, a reference to a hash containing the data for the menus.
484:
485: =back
486:
487: Below is an example of such a hash. Only the 'text', 'default', and
488: 'select2' keys must appear as stated. keys(%menu) are the possible
489: values for the first select menu. The text that coincides with the
490: first menu value is given in $menu{$choice1}->{'text'}. The values
491: and text for the second menu are given in the hash pointed to by
492: $menu{$choice1}->{'select2'}.
493:
494: my %menu = ( A1 => { text =>"Choice A1" ,
495: default => "B3",
496: select2 => {
497: B1 => "Choice B1",
498: B2 => "Choice B2",
499: B3 => "Choice B3",
500: B4 => "Choice B4"
501: }
502: },
503: A2 => { text =>"Choice A2" ,
504: default => "C2",
505: select2 => {
506: C1 => "Choice C1",
507: C2 => "Choice C2",
508: C3 => "Choice C3"
509: }
510: },
511: A3 => { text =>"Choice A3" ,
512: default => "D6",
513: select2 => {
514: D1 => "Choice D1",
515: D2 => "Choice D2",
516: D3 => "Choice D3",
517: D4 => "Choice D4",
518: D5 => "Choice D5",
519: D6 => "Choice D6",
520: D7 => "Choice D7"
521: }
522: }
523: );
524:
525: =cut
526:
527: sub linked_select_forms {
528: my ($formname,
529: $middletext,
530: $firstdefault,
531: $firstselectname,
532: $secondselectname,
533: $hashref
534: ) = @_;
535: my $second = "document.$formname.$secondselectname";
536: my $first = "document.$formname.$firstselectname";
537: # output the javascript to do the changing
538: my $result = '';
539: $result.="<script type=\"text/javascript\">\n";
540: $result.="var select2data = new Object();\n";
541: $" = '","';
542: my $debug = '';
543: foreach my $s1 (sort(keys(%$hashref))) {
544: $result.="select2data.d_$s1 = new Object();\n";
545: $result.="select2data.d_$s1.def = new String('".
546: $hashref->{$s1}->{'default'}."');\n";
547: $result.="select2data.d_$s1.values = new Array(";
548: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
549: $result.="\"@s2values\");\n";
550: $result.="select2data.d_$s1.texts = new Array(";
551: my @s2texts;
552: foreach my $value (@s2values) {
553: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
554: }
555: $result.="\"@s2texts\");\n";
556: }
557: $"=' ';
558: $result.= <<"END";
559:
560: function select1_changed() {
561: // Determine new choice
562: var newvalue = "d_" + $first.value;
563: // update select2
564: var values = select2data[newvalue].values;
565: var texts = select2data[newvalue].texts;
566: var select2def = select2data[newvalue].def;
567: var i;
568: // out with the old
569: for (i = 0; i < $second.options.length; i++) {
570: $second.options[i] = null;
571: }
572: // in with the nuclear
573: for (i=0;i<values.length; i++) {
574: $second.options[i] = new Option(values[i]);
575: $second.options[i].value = values[i];
576: $second.options[i].text = texts[i];
577: if (values[i] == select2def) {
578: $second.options[i].selected = true;
579: }
580: }
581: }
582: </script>
583: END
584: # output the initial values for the selection lists
585: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
586: foreach my $value (sort(keys(%$hashref))) {
587: $result.=" <option value=\"$value\" ";
588: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
589: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
590: }
591: $result .= "</select>\n";
592: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
593: $result .= $middletext;
594: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
595: my $seconddefault = $hashref->{$firstdefault}->{'default'};
596: foreach my $value (sort(keys(%select2))) {
597: $result.=" <option value=\"$value\" ";
598: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
599: $result.=">".&mt($select2{$value})."</option>\n";
600: }
601: $result .= "</select>\n";
602: # return $debug;
603: return $result;
604: } # end of sub linked_select_forms {
605:
606: =pod
607:
608: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
609:
610: Returns a string corresponding to an HTML link to the given help
611: $topic, where $topic corresponds to the name of a .tex file in
612: /home/httpd/html/adm/help/tex, with underscores replaced by
613: spaces.
614:
615: $text will optionally be linked to the same topic, allowing you to
616: link text in addition to the graphic. If you do not want to link
617: text, but wish to specify one of the later parameters, pass an
618: empty string.
619:
620: $stayOnPage is a value that will be interpreted as a boolean. If true,
621: the link will not open a new window. If false, the link will open
622: a new window using Javascript. (Default is false.)
623:
624: $width and $height are optional numerical parameters that will
625: override the width and height of the popped up window, which may
626: be useful for certain help topics with big pictures included.
627:
628: =cut
629:
630: sub help_open_topic {
631: my ($topic, $text, $stayOnPage, $width, $height) = @_;
632: $text = "" if (not defined $text);
633: $stayOnPage = 0 if (not defined $stayOnPage);
634: if ($env{'browser.interface'} eq 'textual' ||
635: $env{'environment.remote'} eq 'off' ) {
636: $stayOnPage=1;
637: }
638: $width = 350 if (not defined $width);
639: $height = 400 if (not defined $height);
640: my $filename = $topic;
641: $filename =~ s/ /_/g;
642:
643: my $template = "";
644: my $link;
645:
646: $topic=~s/\W/\_/g;
647:
648: if (!$stayOnPage)
649: {
650: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
651: }
652: else
653: {
654: $link = "/adm/help/${filename}.hlp";
655: }
656:
657: # Add the text
658: if ($text ne "")
659: {
660: $template .=
661: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
662: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
663: }
664:
665: # Add the graphic
666: my $title = &mt('Online Help');
667: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
668: $template .= <<"ENDTEMPLATE";
669: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
670: ENDTEMPLATE
671: if ($text ne '') { $template.='</td></tr></table>' };
672: return $template;
673:
674: }
675:
676: # This is a quicky function for Latex cheatsheet editing, since it
677: # appears in at least four places
678: sub helpLatexCheatsheet {
679: my $other = shift;
680: my $addOther = '';
681: if ($other) {
682: $addOther = Apache::loncommon::help_open_topic($other, shift,
683: undef, undef, 600) .
684: '</td><td>';
685: }
686: return '<table><tr><td>'.
687: $addOther .
688: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
689: undef,undef,600)
690: .'</td><td>'.
691: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
692: undef,undef,600)
693: .'</td></tr></table>';
694: }
695:
696: sub help_open_menu {
697: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
698: $text = "" if (not defined $text);
699: $stayOnPage = 0 if (not defined $stayOnPage);
700: if ($env{'browser.interface'} eq 'textual' ||
701: $env{'environment.remote'} eq 'off' ) {
702: $stayOnPage=1;
703: }
704: $width = 620 if (not defined $width);
705: $height = 600 if (not defined $height);
706: my $link='';
707: my $title = &mt('Get help');
708: my $origurl = $ENV{'REQUEST_URI'};
709: $origurl=~s|^/~|/priv/|;
710: my $timestamp = time;
711: foreach my $datum (\$color,\$function,\$topic,\$component_help,\$faq,
712: \$bug,\$origurl) {
713: $$datum = &escape($$datum);
714: }
715: if (!$stayOnPage) {
716: $link = "javascript:helpMenu('open')";
717: } else {
718: $link = "javascript:helpMenu('display')";
719: }
720: 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";
721: 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";
722: my $template;
723: if ($text ne "") {
724: $template .=
725: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
726: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
727: }
728: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
729: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
730: my $start_page =
731: &Apache::loncommon::start_page('Help Menu', undef,
732: {'frameset' => 1,
733: 'js_ready' => 1,
734: 'add_entries' => {
735: 'border' => '0',
736: 'rows' => "105,*",},});
737: my $end_page =
738: &Apache::loncommon::end_page({'frameset' => 1,
739: 'js_ready' => 1,});
740:
741: $template .= <<"ENDTEMPLATE";
742: <script type="text/javascript">
743: // <!-- BEGIN LON-CAPA Internal
744: // <![CDATA[
745: function helpMenu(target) {
746: var caller = this;
747: if (target == 'open') {
748: var newWindow = null;
749: try {
750: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
751: }
752: catch(error) {
753: writeHelp(caller);
754: return;
755: }
756: if (newWindow) {
757: caller = newWindow;
758: }
759: }
760: writeHelp(caller);
761: return;
762: }
763: function writeHelp(caller) {
764: caller.document.writeln('$start_page<frame name="bannerframe" src="$banner_link" /><frame name="bodyframe" src="$details_link" /> $end_page')
765: caller.document.close()
766: caller.focus()
767: }
768: // ]]>
769: // END LON-CAPA Internal -->
770: </script>
771: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
772: ENDTEMPLATE
773: if ($component_help) {
774: if (!$text) {
775: $template=&help_open_topic($component_help,undef,$stayOnPage,
776: $width,$height).' '.$template;
777: } else {
778: my $help_text;
779: $help_text=&unescape($topic);
780: $template='<table><tr><td>'.
781: &help_open_topic($component_help,$help_text,$stayOnPage,
782: $width,$height).'</td><td>'.$template.
783: '</td></tr></table>';
784: }
785: }
786: if ($text ne '') { $template.='</td></tr></table>' };
787: return $template;
788: }
789:
790: sub help_open_bug {
791: my ($topic, $text, $stayOnPage, $width, $height) = @_;
792: unless ($env{'user.adv'}) { return ''; }
793: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
794: $text = "" if (not defined $text);
795: $stayOnPage = 0 if (not defined $stayOnPage);
796: if ($env{'browser.interface'} eq 'textual' ||
797: $env{'environment.remote'} eq 'off' ) {
798: $stayOnPage=1;
799: }
800: $width = 600 if (not defined $width);
801: $height = 600 if (not defined $height);
802:
803: $topic=~s/\W+/\+/g;
804: my $link='';
805: my $template='';
806: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
807: &escape($ENV{'REQUEST_URI'}).'&component='.$topic;
808: if (!$stayOnPage)
809: {
810: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
811: }
812: else
813: {
814: $link = $url;
815: }
816: # Add the text
817: if ($text ne "")
818: {
819: $template .=
820: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
821: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
822: }
823:
824: # Add the graphic
825: my $title = &mt('Report a Bug');
826: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
827: $template .= <<"ENDTEMPLATE";
828: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
829: ENDTEMPLATE
830: if ($text ne '') { $template.='</td></tr></table>' };
831: return $template;
832:
833: }
834:
835: sub help_open_faq {
836: my ($topic, $text, $stayOnPage, $width, $height) = @_;
837: unless ($env{'user.adv'}) { return ''; }
838: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
839: $text = "" if (not defined $text);
840: $stayOnPage = 0 if (not defined $stayOnPage);
841: if ($env{'browser.interface'} eq 'textual' ||
842: $env{'environment.remote'} eq 'off' ) {
843: $stayOnPage=1;
844: }
845: $width = 350 if (not defined $width);
846: $height = 400 if (not defined $height);
847:
848: $topic=~s/\W+/\+/g;
849: my $link='';
850: my $template='';
851: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
852: if (!$stayOnPage)
853: {
854: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
855: }
856: else
857: {
858: $link = $url;
859: }
860:
861: # Add the text
862: if ($text ne "")
863: {
864: $template .=
865: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
866: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
867: }
868:
869: # Add the graphic
870: my $title = &mt('View the FAQ');
871: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
872: $template .= <<"ENDTEMPLATE";
873: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
874: ENDTEMPLATE
875: if ($text ne '') { $template.='</td></tr></table>' };
876: return $template;
877:
878: }
879:
880: ###############################################################
881: ###############################################################
882:
883: =pod
884:
885: =item * change_content_javascript():
886:
887: This and the next function allow you to create small sections of an
888: otherwise static HTML page that you can update on the fly with
889: Javascript, even in Netscape 4.
890:
891: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
892: must be written to the HTML page once. It will prove the Javascript
893: function "change(name, content)". Calling the change function with the
894: name of the section
895: you want to update, matching the name passed to C<changable_area>, and
896: the new content you want to put in there, will put the content into
897: that area.
898:
899: B<Note>: Netscape 4 only reserves enough space for the changable area
900: to contain room for the original contents. You need to "make space"
901: for whatever changes you wish to make, and be B<sure> to check your
902: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
903: it's adequate for updating a one-line status display, but little more.
904: This script will set the space to 100% width, so you only need to
905: worry about height in Netscape 4.
906:
907: Modern browsers are much less limiting, and if you can commit to the
908: user not using Netscape 4, this feature may be used freely with
909: pretty much any HTML.
910:
911: =cut
912:
913: sub change_content_javascript {
914: # If we're on Netscape 4, we need to use Layer-based code
915: if ($env{'browser.type'} eq 'netscape' &&
916: $env{'browser.version'} =~ /^4\./) {
917: return (<<NETSCAPE4);
918: function change(name, content) {
919: doc = document.layers[name+"___escape"].layers[0].document;
920: doc.open();
921: doc.write(content);
922: doc.close();
923: }
924: NETSCAPE4
925: } else {
926: # Otherwise, we need to use semi-standards-compliant code
927: # (technically, "innerHTML" isn't standard but the equivalent
928: # is really scary, and every useful browser supports it
929: return (<<DOMBASED);
930: function change(name, content) {
931: element = document.getElementById(name);
932: element.innerHTML = content;
933: }
934: DOMBASED
935: }
936: }
937:
938: =pod
939:
940: =item * changable_area($name, $origContent):
941:
942: This provides a "changable area" that can be modified on the fly via
943: the Javascript code provided in C<change_content_javascript>. $name is
944: the name you will use to reference the area later; do not repeat the
945: same name on a given HTML page more then once. $origContent is what
946: the area will originally contain, which can be left blank.
947:
948: =cut
949:
950: sub changable_area {
951: my ($name, $origContent) = @_;
952:
953: if ($env{'browser.type'} eq 'netscape' &&
954: $env{'browser.version'} =~ /^4\./) {
955: # If this is netscape 4, we need to use the Layer tag
956: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
957: } else {
958: return "<span id='$name'>$origContent</span>";
959: }
960: }
961:
962: =pod
963:
964: =back
965:
966: =head1 Excel and CSV file utility routines
967:
968: =over 4
969:
970: =cut
971:
972: ###############################################################
973: ###############################################################
974:
975: =pod
976:
977: =item * csv_translate($text)
978:
979: Translate $text to allow it to be output as a 'comma separated values'
980: format.
981:
982: =cut
983:
984: ###############################################################
985: ###############################################################
986: sub csv_translate {
987: my $text = shift;
988: $text =~ s/\"/\"\"/g;
989: $text =~ s/\n/ /g;
990: return $text;
991: }
992:
993: ###############################################################
994: ###############################################################
995:
996: =pod
997:
998: =item * define_excel_formats
999:
1000: Define some commonly used Excel cell formats.
1001:
1002: Currently supported formats:
1003:
1004: =over 4
1005:
1006: =item header
1007:
1008: =item bold
1009:
1010: =item h1
1011:
1012: =item h2
1013:
1014: =item h3
1015:
1016: =item h4
1017:
1018: =item i
1019:
1020: =item date
1021:
1022: =back
1023:
1024: Inputs: $workbook
1025:
1026: Returns: $format, a hash reference.
1027:
1028: =cut
1029:
1030: ###############################################################
1031: ###############################################################
1032: sub define_excel_formats {
1033: my ($workbook) = @_;
1034: my $format;
1035: $format->{'header'} = $workbook->add_format(bold => 1,
1036: bottom => 1,
1037: align => 'center');
1038: $format->{'bold'} = $workbook->add_format(bold=>1);
1039: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1040: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1041: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1042: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1043: $format->{'i'} = $workbook->add_format(italic=>1);
1044: $format->{'date'} = $workbook->add_format(num_format=>
1045: 'mm/dd/yyyy hh:mm:ss');
1046: return $format;
1047: }
1048:
1049: ###############################################################
1050: ###############################################################
1051:
1052: =pod
1053:
1054: =item * create_workbook
1055:
1056: Create an Excel worksheet. If it fails, output message on the
1057: request object and return undefs.
1058:
1059: Inputs: Apache request object
1060:
1061: Returns (undef) on failure,
1062: Excel worksheet object, scalar with filename, and formats
1063: from &Apache::loncommon::define_excel_formats on success
1064:
1065: =cut
1066:
1067: ###############################################################
1068: ###############################################################
1069: sub create_workbook {
1070: my ($r) = @_;
1071: #
1072: # Create the excel spreadsheet
1073: my $filename = '/prtspool/'.
1074: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1075: time.'_'.rand(1000000000).'.xls';
1076: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1077: if (! defined($workbook)) {
1078: $r->log_error("Error creating excel spreadsheet $filename: $!");
1079: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1080: "This error has been logged. ".
1081: "Please alert your LON-CAPA administrator").
1082: '</p>');
1083: return (undef);
1084: }
1085: #
1086: $workbook->set_tempdir('/home/httpd/perl/tmp');
1087: #
1088: my $format = &Apache::loncommon::define_excel_formats($workbook);
1089: return ($workbook,$filename,$format);
1090: }
1091:
1092: ###############################################################
1093: ###############################################################
1094:
1095: =pod
1096:
1097: =item * create_text_file
1098:
1099: Create a file to write to and eventually make available to the usre.
1100: If file creation fails, outputs an error message on the request object and
1101: return undefs.
1102:
1103: Inputs: Apache request object, and file suffix
1104:
1105: Returns (undef) on failure,
1106: Filehandle and filename on success.
1107:
1108: =cut
1109:
1110: ###############################################################
1111: ###############################################################
1112: sub create_text_file {
1113: my ($r,$suffix) = @_;
1114: if (! defined($suffix)) { $suffix = 'txt'; };
1115: my $fh;
1116: my $filename = '/prtspool/'.
1117: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1118: time.'_'.rand(1000000000).'.'.$suffix;
1119: $fh = Apache::File->new('>/home/httpd'.$filename);
1120: if (! defined($fh)) {
1121: $r->log_error("Couldn't open $filename for output $!");
1122: $r->print("Problems occured in creating the output file. ".
1123: "This error has been logged. ".
1124: "Please alert your LON-CAPA administrator.");
1125: }
1126: return ($fh,$filename)
1127: }
1128:
1129:
1130: =pod
1131:
1132: =back
1133:
1134: =cut
1135:
1136: ###############################################################
1137: ## Home server <option> list generating code ##
1138: ###############################################################
1139:
1140: =pod
1141:
1142: =head1 Home Server option list generating code
1143:
1144: =over 4
1145:
1146: =item * get_domains()
1147:
1148: Returns an array containing each of the domains listed in the hosts.tab
1149: file.
1150:
1151: =cut
1152:
1153: #-------------------------------------------
1154: sub get_domains {
1155: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1156: my @domains;
1157: my %seen;
1158: foreach my $dom (sort(values(%Apache::lonnet::hostdom))) {
1159: push(@domains,$dom) unless $seen{$dom}++;
1160: }
1161: return @domains;
1162: }
1163:
1164: # ------------------------------------------
1165:
1166: sub domain_select {
1167: my ($name,$value,$multiple)=@_;
1168: my %domains=map {
1169: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1170: } &get_domains;
1171: if ($multiple) {
1172: $domains{''}=&mt('Any domain');
1173: return &multiple_select_form($name,$value,4,\%domains);
1174: } else {
1175: return &select_form($name,$value,%domains);
1176: }
1177: }
1178:
1179: #-------------------------------------------
1180:
1181: =pod
1182:
1183: =item * multiple_select_form($name,$value,$size,$hash,$order)
1184:
1185: Returns a string containing a <select> element int multiple mode
1186:
1187:
1188: Args:
1189: $name - name of the <select> element
1190: $value - sclara or array ref of values that should already be selected
1191: $size - number of rows long the select element is
1192: $hash - the elements should be 'option' => 'shown text'
1193: (shown text should already have been &mt())
1194: $order - (optional) array ref of the order to show the elments in
1195:
1196: =cut
1197:
1198: #-------------------------------------------
1199: sub multiple_select_form {
1200: my ($name,$value,$size,$hash,$order)=@_;
1201: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1202: my $output='';
1203: if (! defined($size)) {
1204: $size = 4;
1205: if (scalar(keys(%$hash))<4) {
1206: $size = scalar(keys(%$hash));
1207: }
1208: }
1209: $output.="\n<select name='$name' size='$size' multiple='1'>";
1210: my @order = ref($order) ? @$order
1211: : sort(keys(%$hash));
1212: foreach my $key (@order) {
1213: $output.='<option value="'.&HTML::Entities::encode($key,'"<>&').'" ';
1214: $output.='selected="selected" ' if ($selected{$key});
1215: $output.='>'.$hash->{$key}."</option>\n";
1216: }
1217: $output.="</select>\n";
1218: return $output;
1219: }
1220:
1221: #-------------------------------------------
1222:
1223: =pod
1224:
1225: =item * select_form($defdom,$name,%hash)
1226:
1227: Returns a string containing a <select name='$name' size='1'> form to
1228: allow a user to select options from a hash option_name => displayed text.
1229: See lonrights.pm for an example invocation and use.
1230:
1231: =cut
1232:
1233: #-------------------------------------------
1234: sub select_form {
1235: my ($def,$name,%hash) = @_;
1236: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1237: my @keys;
1238: if (exists($hash{'select_form_order'})) {
1239: @keys=@{$hash{'select_form_order'}};
1240: } else {
1241: @keys=sort(keys(%hash));
1242: }
1243: foreach my $key (@keys) {
1244: $selectform.=
1245: '<option value="'.&HTML::Entities::encode($key,'"<>&').'" '.
1246: ($key eq $def ? 'selected="selected" ' : '').
1247: ">".&mt($hash{$key})."</option>\n";
1248: }
1249: $selectform.="</select>";
1250: return $selectform;
1251: }
1252:
1253: sub gradeleveldescription {
1254: my $gradelevel=shift;
1255: my %gradelevels=(0 => 'Not specified',
1256: 1 => 'Grade 1',
1257: 2 => 'Grade 2',
1258: 3 => 'Grade 3',
1259: 4 => 'Grade 4',
1260: 5 => 'Grade 5',
1261: 6 => 'Grade 6',
1262: 7 => 'Grade 7',
1263: 8 => 'Grade 8',
1264: 9 => 'Grade 9',
1265: 10 => 'Grade 10',
1266: 11 => 'Grade 11',
1267: 12 => 'Grade 12',
1268: 13 => 'Grade 13',
1269: 14 => '100 Level',
1270: 15 => '200 Level',
1271: 16 => '300 Level',
1272: 17 => '400 Level',
1273: 18 => 'Graduate Level');
1274: return &mt($gradelevels{$gradelevel});
1275: }
1276:
1277: sub select_level_form {
1278: my ($deflevel,$name)=@_;
1279: unless ($deflevel) { $deflevel=0; }
1280: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1281: for (my $i=0; $i<=18; $i++) {
1282: $selectform.="<option value=\"$i\" ".
1283: ($i==$deflevel ? 'selected="selected" ' : '').
1284: ">".&gradeleveldescription($i)."</option>\n";
1285: }
1286: $selectform.="</select>";
1287: return $selectform;
1288: }
1289:
1290: #-------------------------------------------
1291:
1292: =pod
1293:
1294: =item * select_dom_form($defdom,$name,$includeempty)
1295:
1296: Returns a string containing a <select name='$name' size='1'> form to
1297: allow a user to select the domain to preform an operation in.
1298: See loncreateuser.pm for an example invocation and use.
1299:
1300: If the $includeempty flag is set, it also includes an empty choice ("no domain
1301: selected");
1302:
1303: =cut
1304:
1305: #-------------------------------------------
1306: sub select_dom_form {
1307: my ($defdom,$name,$includeempty) = @_;
1308: my @domains = get_domains();
1309: if ($includeempty) { @domains=('',@domains); }
1310: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1311: foreach my $dom (@domains) {
1312: $selectdomain.="<option value=\"$dom\" ".
1313: ($dom eq $defdom ? 'selected="selected" ' : '').
1314: ">$dom</option>\n";
1315: }
1316: $selectdomain.="</select>";
1317: return $selectdomain;
1318: }
1319:
1320: #-------------------------------------------
1321:
1322: =pod
1323:
1324: =item * get_library_servers($domain)
1325:
1326: Returns a hash which contains keys like '103l3' and values like
1327: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1328: given $domain.
1329:
1330: =cut
1331:
1332: #-------------------------------------------
1333: sub get_library_servers {
1334: my $domain = shift;
1335: my %library_servers;
1336: foreach my $hostid (keys(%Apache::lonnet::libserv)) {
1337: if ($Apache::lonnet::hostdom{$hostid} eq $domain) {
1338: $library_servers{$hostid} = $Apache::lonnet::hostname{$hostid};
1339: }
1340: }
1341: return %library_servers;
1342: }
1343:
1344: #-------------------------------------------
1345:
1346: =pod
1347:
1348: =item * home_server_option_list($domain)
1349:
1350: returns a string which contains an <option> list to be used in a
1351: <select> form input. See loncreateuser.pm for an example.
1352:
1353: =cut
1354:
1355: #-------------------------------------------
1356: sub home_server_option_list {
1357: my $domain = shift;
1358: my %servers = &get_library_servers($domain);
1359: my $result = '';
1360: foreach my $hostid (sort(keys(%servers))) {
1361: $result.=
1362: '<option value="'.$hostid.'">'.
1363: $hostid.' '.$servers{$hostid}."</option>\n";
1364: }
1365: return $result;
1366: }
1367:
1368: =pod
1369:
1370: =back
1371:
1372: =cut
1373:
1374: ###############################################################
1375: ## Decoding User Agent ##
1376: ###############################################################
1377:
1378: =pod
1379:
1380: =head1 Decoding the User Agent
1381:
1382: =over 4
1383:
1384: =item * &decode_user_agent()
1385:
1386: Inputs: $r
1387:
1388: Outputs:
1389:
1390: =over 4
1391:
1392: =item * $httpbrowser
1393:
1394: =item * $clientbrowser
1395:
1396: =item * $clientversion
1397:
1398: =item * $clientmathml
1399:
1400: =item * $clientunicode
1401:
1402: =item * $clientos
1403:
1404: =back
1405:
1406: =back
1407:
1408: =cut
1409:
1410: ###############################################################
1411: ###############################################################
1412: sub decode_user_agent {
1413: my ($r)=@_;
1414: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1415: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1416: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1417: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1418: my $clientbrowser='unknown';
1419: my $clientversion='0';
1420: my $clientmathml='';
1421: my $clientunicode='0';
1422: for (my $i=0;$i<=$#browsertype;$i++) {
1423: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1424: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1425: $clientbrowser=$bname;
1426: $httpbrowser=~/$vreg/i;
1427: $clientversion=$1;
1428: $clientmathml=($clientversion>=$minv);
1429: $clientunicode=($clientversion>=$univ);
1430: }
1431: }
1432: my $clientos='unknown';
1433: if (($httpbrowser=~/linux/i) ||
1434: ($httpbrowser=~/unix/i) ||
1435: ($httpbrowser=~/ux/i) ||
1436: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1437: if (($httpbrowser=~/vax/i) ||
1438: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1439: if ($httpbrowser=~/next/i) { $clientos='next'; }
1440: if (($httpbrowser=~/mac/i) ||
1441: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1442: if ($httpbrowser=~/win/i) { $clientos='win'; }
1443: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1444: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1445: $clientunicode,$clientos,);
1446: }
1447:
1448: ###############################################################
1449: ## Authentication changing form generation subroutines ##
1450: ###############################################################
1451: ##
1452: ## All of the authform_xxxxxxx subroutines take their inputs in a
1453: ## hash, and have reasonable default values.
1454: ##
1455: ## formname = the name given in the <form> tag.
1456: #-------------------------------------------
1457:
1458: =pod
1459:
1460: =head1 Authentication Routines
1461:
1462: =over 4
1463:
1464: =item * authform_xxxxxx
1465:
1466: The authform_xxxxxx subroutines provide javascript and html forms which
1467: handle some of the conveniences required for authentication forms.
1468: This is not an optimal method, but it works.
1469:
1470: See loncreateuser.pm for invocation and use examples.
1471:
1472: =over 4
1473:
1474: =item * authform_header
1475:
1476: =item * authform_authorwarning
1477:
1478: =item * authform_nochange
1479:
1480: =item * authform_kerberos
1481:
1482: =item * authform_internal
1483:
1484: =item * authform_filesystem
1485:
1486: =back
1487:
1488: =back
1489:
1490: =cut
1491:
1492: #-------------------------------------------
1493: sub authform_header{
1494: my %in = (
1495: formname => 'cu',
1496: kerb_def_dom => '',
1497: @_,
1498: );
1499: $in{'formname'} = 'document.' . $in{'formname'};
1500: my $result='';
1501:
1502: #---------------------------------------------- Code for upper case translation
1503: my $Javascript_toUpperCase;
1504: unless ($in{kerb_def_dom}) {
1505: $Javascript_toUpperCase =<<"END";
1506: switch (choice) {
1507: case 'krb': currentform.elements[choicearg].value =
1508: currentform.elements[choicearg].value.toUpperCase();
1509: break;
1510: default:
1511: }
1512: END
1513: } else {
1514: $Javascript_toUpperCase = "";
1515: }
1516:
1517: my $radioval = "'nochange'";
1518: if (exists($in{'curr_authtype'}) &&
1519: defined($in{'curr_authtype'}) &&
1520: $in{'curr_authtype'} ne '') {
1521: $radioval = "'$in{'curr_authtype'}arg'";
1522: }
1523: my $argfield = 'null';
1524: if ( grep/^mode$/,(keys %in) ) {
1525: if ($in{'mode'} eq 'modifycourse') {
1526: if ( grep/^curr_authtype$/,(keys %in) ) {
1527: $radioval = "'$in{'curr_authtype'}'";
1528: }
1529: if ( grep/^curr_autharg$/,(keys %in) ) {
1530: unless ($in{'curr_autharg'} eq '') {
1531: $argfield = "'$in{'curr_autharg'}'";
1532: }
1533: }
1534: }
1535: }
1536:
1537: $result.=<<"END";
1538: var current = new Object();
1539: current.radiovalue = $radioval;
1540: current.argfield = $argfield;
1541:
1542: function changed_radio(choice,currentform) {
1543: var choicearg = choice + 'arg';
1544: // If a radio button in changed, we need to change the argfield
1545: if (current.radiovalue != choice) {
1546: current.radiovalue = choice;
1547: if (current.argfield != null) {
1548: currentform.elements[current.argfield].value = '';
1549: }
1550: if (choice == 'nochange') {
1551: current.argfield = null;
1552: } else {
1553: current.argfield = choicearg;
1554: switch(choice) {
1555: case 'krb':
1556: currentform.elements[current.argfield].value =
1557: "$in{'kerb_def_dom'}";
1558: break;
1559: default:
1560: break;
1561: }
1562: }
1563: }
1564: return;
1565: }
1566:
1567: function changed_text(choice,currentform) {
1568: var choicearg = choice + 'arg';
1569: if (currentform.elements[choicearg].value !='') {
1570: $Javascript_toUpperCase
1571: // clear old field
1572: if ((current.argfield != choicearg) && (current.argfield != null)) {
1573: currentform.elements[current.argfield].value = '';
1574: }
1575: current.argfield = choicearg;
1576: }
1577: set_auth_radio_buttons(choice,currentform);
1578: return;
1579: }
1580:
1581: function set_auth_radio_buttons(newvalue,currentform) {
1582: var i=0;
1583: while (i < currentform.login.length) {
1584: if (currentform.login[i].value == newvalue) { break; }
1585: i++;
1586: }
1587: if (i == currentform.login.length) {
1588: return;
1589: }
1590: current.radiovalue = newvalue;
1591: currentform.login[i].checked = true;
1592: return;
1593: }
1594: END
1595: return $result;
1596: }
1597:
1598: sub authform_authorwarning{
1599: my $result='';
1600: $result='<i>'.
1601: &mt('As a general rule, only authors or co-authors should be '.
1602: 'filesystem authenticated '.
1603: '(which allows access to the server filesystem).')."</i>\n";
1604: return $result;
1605: }
1606:
1607: sub authform_nochange{
1608: my %in = (
1609: formname => 'document.cu',
1610: kerb_def_dom => 'MSU.EDU',
1611: @_,
1612: );
1613: my $result = '<label>'.&mt('[_1] Do not change login data',
1614: '<input type="radio" name="login" value="nochange" '.
1615: 'checked="checked" onclick="'.
1616: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1617: '</label>';
1618: return $result;
1619: }
1620:
1621: sub authform_kerberos{
1622: my %in = (
1623: formname => 'document.cu',
1624: kerb_def_dom => 'MSU.EDU',
1625: kerb_def_auth => 'krb4',
1626: @_,
1627: );
1628: my ($check4,$check5,$krbarg);
1629: if ($in{'kerb_def_auth'} eq 'krb5') {
1630: $check5 = " checked=\"on\"";
1631: } else {
1632: $check4 = " checked=\"on\"";
1633: }
1634: $krbarg = $in{'kerb_def_dom'};
1635:
1636: my $krbcheck = "";
1637: if ( grep/^curr_authtype$/,(keys %in) ) {
1638: if ($in{'curr_authtype'} =~ m/^krb/) {
1639: $krbcheck = " checked=\"on\"";
1640: if ( grep/^curr_autharg$/,(keys %in) ) {
1641: $krbarg = $in{'curr_autharg'};
1642: }
1643: }
1644: }
1645:
1646: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1647: my $result .= &mt
1648: ('[_1] Kerberos authenticated with domain [_2] '.
1649: '[_3] Version 4 [_4] Version 5 [_5]',
1650: '<label><input type="radio" name="login" value="krb" '.
1651: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1652: '</label><input type="text" size="10" name="krbarg" '.
1653: 'value="'.$krbarg.'" '.
1654: 'onchange="'.$jscall.'" />',
1655: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1656: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1657: '</label>');
1658: return $result;
1659: }
1660:
1661: sub authform_internal{
1662: my %args = (
1663: formname => 'document.cu',
1664: kerb_def_dom => 'MSU.EDU',
1665: @_,
1666: );
1667:
1668: my $intcheck = "";
1669: my $intarg = 'value=""';
1670: if ( grep/^curr_authtype$/,(keys %args) ) {
1671: if ($args{'curr_authtype'} eq 'int') {
1672: $intcheck = " checked=\"on\"";
1673: if ( grep/^curr_autharg$/,(keys %args) ) {
1674: $intarg = "value=\"$args{'curr_autharg'}\"";
1675: }
1676: }
1677: }
1678:
1679: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1680: my $result.=&mt
1681: ('[_1] Internally authenticated (with initial password [_2])',
1682: '<label><input type="radio" name="login" value="int" '.$intcheck.
1683: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1684: '</label><input type="text" size="10" name="intarg" '.$intarg.
1685: ' onchange="'.$jscall.'" />');
1686: return $result;
1687: }
1688:
1689: sub authform_local{
1690: my %in = (
1691: formname => 'document.cu',
1692: kerb_def_dom => 'MSU.EDU',
1693: @_,
1694: );
1695:
1696: my $loccheck = "";
1697: my $locarg = 'value=""';
1698: if ( grep/^curr_authtype$/,(keys %in) ) {
1699: if ($in{'curr_authtype'} eq 'loc') {
1700: $loccheck = " checked=\"on\"";
1701: if ( grep/^curr_autharg$/,(keys %in) ) {
1702: $locarg = "value=\"$in{'curr_autharg'}\"";
1703: }
1704: }
1705: }
1706:
1707: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1708: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1709: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1710: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1711: '</label><input type="text" size="10" name="locarg" '.$locarg.
1712: ' onchange="'.$jscall.'" />');
1713: return $result;
1714: }
1715:
1716: sub authform_filesystem{
1717: my %in = (
1718: formname => 'document.cu',
1719: kerb_def_dom => 'MSU.EDU',
1720: @_,
1721: );
1722: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1723: my $result.= &mt
1724: ('[_1] Filesystem Authenticated (with initial password [_2])',
1725: '<label><input type="radio" name="login" value="fsys" '.
1726: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1727: '</label><input type="text" size="10" name="fsysarg" value="" '.
1728: 'onchange="'.$jscall.'" />');
1729: return $result;
1730: }
1731:
1732: ###############################################################
1733: ## Get Authentication Defaults for Domain ##
1734: ###############################################################
1735:
1736: =pod
1737:
1738: =head1 Domains and Authentication
1739:
1740: Returns default authentication type and an associated argument as
1741: listed in file 'domain.tab'.
1742:
1743: =over 4
1744:
1745: =item * get_auth_defaults
1746:
1747: get_auth_defaults($target_domain) returns the default authentication
1748: type and an associated argument (initial password or a kerberos domain).
1749: These values are stored in lonTabs/domain.tab
1750:
1751: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1752:
1753: If target_domain is not found in domain.tab, returns nothing ('').
1754:
1755: =cut
1756:
1757: #-------------------------------------------
1758: sub get_auth_defaults {
1759: my $domain=shift;
1760: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1761: }
1762: ###############################################################
1763: ## End Get Authentication Defaults for Domain ##
1764: ###############################################################
1765:
1766: ###############################################################
1767: ## Get Kerberos Defaults for Domain ##
1768: ###############################################################
1769: ##
1770: ## Returns default kerberos version and an associated argument
1771: ## as listed in file domain.tab. If not listed, provides
1772: ## appropriate default domain and kerberos version.
1773: ##
1774: #-------------------------------------------
1775:
1776: =pod
1777:
1778: =item * get_kerberos_defaults
1779:
1780: get_kerberos_defaults($target_domain) returns the default kerberos
1781: version and domain. If not found in domain.tabs, it defaults to
1782: version 4 and the domain of the server.
1783:
1784: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1785:
1786: =cut
1787:
1788: #-------------------------------------------
1789: sub get_kerberos_defaults {
1790: my $domain=shift;
1791: my ($krbdef,$krbdefdom) =
1792: &Apache::loncommon::get_auth_defaults($domain);
1793: unless ($krbdef =~/^krb/ && $krbdefdom) {
1794: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1795: my $krbdefdom=$1;
1796: $krbdefdom=~tr/a-z/A-Z/;
1797: $krbdef = "krb4";
1798: }
1799: return ($krbdef,$krbdefdom);
1800: }
1801:
1802: =pod
1803:
1804: =back
1805:
1806: =cut
1807:
1808: ###############################################################
1809: ## Thesaurus Functions ##
1810: ###############################################################
1811:
1812: =pod
1813:
1814: =head1 Thesaurus Functions
1815:
1816: =over 4
1817:
1818: =item * initialize_keywords
1819:
1820: Initializes the package variable %Keywords if it is empty. Uses the
1821: package variable $thesaurus_db_file.
1822:
1823: =cut
1824:
1825: ###################################################
1826:
1827: sub initialize_keywords {
1828: return 1 if (scalar keys(%Keywords));
1829: # If we are here, %Keywords is empty, so fill it up
1830: # Make sure the file we need exists...
1831: if (! -e $thesaurus_db_file) {
1832: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1833: " failed because it does not exist");
1834: return 0;
1835: }
1836: # Set up the hash as a database
1837: my %thesaurus_db;
1838: if (! tie(%thesaurus_db,'GDBM_File',
1839: $thesaurus_db_file,&GDBM_READER(),0640)){
1840: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1841: $thesaurus_db_file);
1842: return 0;
1843: }
1844: # Get the average number of appearances of a word.
1845: my $avecount = $thesaurus_db{'average.count'};
1846: # Put keywords (those that appear > average) into %Keywords
1847: while (my ($word,$data)=each (%thesaurus_db)) {
1848: my ($count,undef) = split /:/,$data;
1849: $Keywords{$word}++ if ($count > $avecount);
1850: }
1851: untie %thesaurus_db;
1852: # Remove special values from %Keywords.
1853: foreach my $value ('total.count','average.count') {
1854: delete($Keywords{$value}) if (exists($Keywords{$value}));
1855: }
1856: return 1;
1857: }
1858:
1859: ###################################################
1860:
1861: =pod
1862:
1863: =item * keyword($word)
1864:
1865: Returns true if $word is a keyword. A keyword is a word that appears more
1866: than the average number of times in the thesaurus database. Calls
1867: &initialize_keywords
1868:
1869: =cut
1870:
1871: ###################################################
1872:
1873: sub keyword {
1874: return if (!&initialize_keywords());
1875: my $word=lc(shift());
1876: $word=~s/\W//g;
1877: return exists($Keywords{$word});
1878: }
1879:
1880: ###############################################################
1881:
1882: =pod
1883:
1884: =item * get_related_words
1885:
1886: Look up a word in the thesaurus. Takes a scalar argument and returns
1887: an array of words. If the keyword is not in the thesaurus, an empty array
1888: will be returned. The order of the words returned is determined by the
1889: database which holds them.
1890:
1891: Uses global $thesaurus_db_file.
1892:
1893: =cut
1894:
1895: ###############################################################
1896: sub get_related_words {
1897: my $keyword = shift;
1898: my %thesaurus_db;
1899: if (! -e $thesaurus_db_file) {
1900: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1901: "failed because the file does not exist");
1902: return ();
1903: }
1904: if (! tie(%thesaurus_db,'GDBM_File',
1905: $thesaurus_db_file,&GDBM_READER(),0640)){
1906: return ();
1907: }
1908: my @Words=();
1909: if (exists($thesaurus_db{$keyword})) {
1910: # The first element is the number of times
1911: # the word appears. We do not need it now.
1912: (undef,@Words) = (split(/:/,$thesaurus_db{$keyword}));
1913: for (my $i=0;$i<=$#Words;$i++) {
1914: ($Words[$i],undef)= split(/\,/,$Words[$i]);
1915: }
1916: }
1917: untie %thesaurus_db;
1918: return @Words;
1919: }
1920:
1921: =pod
1922:
1923: =back
1924:
1925: =cut
1926:
1927: # -------------------------------------------------------------- Plaintext name
1928: =pod
1929:
1930: =head1 User Name Functions
1931:
1932: =over 4
1933:
1934: =item * plainname($uname,$udom,$first)
1935:
1936: Takes a users logon name and returns it as a string in
1937: "first middle last generation" form
1938: if $first is set to 'lastname' then it returns it as
1939: 'lastname generation, firstname middlename' if their is a lastname
1940:
1941: =cut
1942:
1943:
1944: ###############################################################
1945: sub plainname {
1946: my ($uname,$udom,$first)=@_;
1947: my %names=&getnames($uname,$udom);
1948: my $name=&Apache::lonnet::format_name($names{'firstname'},
1949: $names{'middlename'},
1950: $names{'lastname'},
1951: $names{'generation'},$first);
1952: $name=~s/^\s+//;
1953: $name=~s/\s+$//;
1954: $name=~s/\s+/ /g;
1955: if ($name !~ /\S/) { $name=$uname.':'.$udom; }
1956: return $name;
1957: }
1958:
1959: # -------------------------------------------------------------------- Nickname
1960: =pod
1961:
1962: =item * nickname($uname,$udom)
1963:
1964: Gets a users name and returns it as a string as
1965:
1966: ""nickname""
1967:
1968: if the user has a nickname or
1969:
1970: "first middle last generation"
1971:
1972: if the user does not
1973:
1974: =cut
1975:
1976: sub nickname {
1977: my ($uname,$udom)=@_;
1978: my %names=&getnames($uname,$udom);
1979: my $name=$names{'nickname'};
1980: if ($name) {
1981: $name='"'.$name.'"';
1982: } else {
1983: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1984: $names{'lastname'}.' '.$names{'generation'};
1985: $name=~s/\s+$//;
1986: $name=~s/\s+/ /g;
1987: }
1988: return $name;
1989: }
1990:
1991: sub getnames {
1992: my ($uname,$udom)=@_;
1993: my $id=$uname.':'.$udom;
1994: my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
1995: if ($cached) {
1996: return %{$names};
1997: } else {
1998: my %loadnames=&Apache::lonnet::get('environment',
1999: ['firstname','middlename','lastname','generation','nickname'],
2000: $udom,$uname);
2001: &Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
2002: return %loadnames;
2003: }
2004: }
2005:
2006: # ------------------------------------------------------------------ Screenname
2007:
2008: =pod
2009:
2010: =item * screenname($uname,$udom)
2011:
2012: Gets a users screenname and returns it as a string
2013:
2014: =cut
2015:
2016: sub screenname {
2017: my ($uname,$udom)=@_;
2018: if ($uname eq $env{'user.name'} &&
2019: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
2020: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
2021: return $names{'screenname'};
2022: }
2023:
2024:
2025: # ------------------------------------------------------------- Message Wrapper
2026:
2027: sub messagewrapper {
2028: my ($link,$username,$domain,$subject,$text)=@_;
2029: return
2030: '<a href="/adm/email?compose=individual&'.
2031: 'recname='.$username.'&recdom='.$domain.
2032: '&subject='.&escape($subject).'&text='.&escape($text).'" '.
2033: 'title="'.&mt('Send message').'">'.$link.'</a>';
2034: }
2035: # --------------------------------------------------------------- Notes Wrapper
2036:
2037: sub noteswrapper {
2038: my ($link,$un,$do)=@_;
2039: return
2040: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
2041: }
2042: # ------------------------------------------------------------- Aboutme Wrapper
2043:
2044: sub aboutmewrapper {
2045: my ($link,$username,$domain,$target)=@_;
2046: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
2047: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
2048: }
2049:
2050: # ------------------------------------------------------------ Syllabus Wrapper
2051:
2052:
2053: sub syllabuswrapper {
2054: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2055: if ($fontcolor) {
2056: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2057: }
2058: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
2059: }
2060:
2061: sub track_student_link {
2062: my ($linktext,$sname,$sdom,$target,$start) = @_;
2063: my $link ="/adm/trackstudent?";
2064: my $title = 'View recent activity';
2065: if (defined($sname) && $sname !~ /^\s*$/ &&
2066: defined($sdom) && $sdom !~ /^\s*$/) {
2067: $link .= "selected_student=$sname:$sdom";
2068: $title .= ' of this student';
2069: }
2070: if (defined($target) && $target !~ /^\s*$/) {
2071: $target = qq{target="$target"};
2072: } else {
2073: $target = '';
2074: }
2075: if ($start) { $link.='&start='.$start; }
2076: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2077: }
2078:
2079: =pod
2080:
2081: =back
2082:
2083: =head1 Access .tab File Data
2084:
2085: =over 4
2086:
2087: =item * languageids()
2088:
2089: returns list of all language ids
2090:
2091: =cut
2092:
2093: sub languageids {
2094: return sort(keys(%language));
2095: }
2096:
2097: =pod
2098:
2099: =item * languagedescription()
2100:
2101: returns description of a specified language id
2102:
2103: =cut
2104:
2105: sub languagedescription {
2106: my $code=shift;
2107: return ($supported_language{$code}?'* ':'').
2108: $language{$code}.
2109: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2110: }
2111:
2112: sub plainlanguagedescription {
2113: my $code=shift;
2114: return $language{$code};
2115: }
2116:
2117: sub supportedlanguagecode {
2118: my $code=shift;
2119: return $supported_language{$code};
2120: }
2121:
2122: =pod
2123:
2124: =item * copyrightids()
2125:
2126: returns list of all copyrights
2127:
2128: =cut
2129:
2130: sub copyrightids {
2131: return sort(keys(%cprtag));
2132: }
2133:
2134: =pod
2135:
2136: =item * copyrightdescription()
2137:
2138: returns description of a specified copyright id
2139:
2140: =cut
2141:
2142: sub copyrightdescription {
2143: return &mt($cprtag{shift(@_)});
2144: }
2145:
2146: =pod
2147:
2148: =item * source_copyrightids()
2149:
2150: returns list of all source copyrights
2151:
2152: =cut
2153:
2154: sub source_copyrightids {
2155: return sort(keys(%scprtag));
2156: }
2157:
2158: =pod
2159:
2160: =item * source_copyrightdescription()
2161:
2162: returns description of a specified source copyright id
2163:
2164: =cut
2165:
2166: sub source_copyrightdescription {
2167: return &mt($scprtag{shift(@_)});
2168: }
2169:
2170: =pod
2171:
2172: =item * filecategories()
2173:
2174: returns list of all file categories
2175:
2176: =cut
2177:
2178: sub filecategories {
2179: return sort(keys(%category_extensions));
2180: }
2181:
2182: =pod
2183:
2184: =item * filecategorytypes()
2185:
2186: returns list of file types belonging to a given file
2187: category
2188:
2189: =cut
2190:
2191: sub filecategorytypes {
2192: my ($cat) = @_;
2193: return @{$category_extensions{lc($cat)}};
2194: }
2195:
2196: =pod
2197:
2198: =item * fileembstyle()
2199:
2200: returns embedding style for a specified file type
2201:
2202: =cut
2203:
2204: sub fileembstyle {
2205: return $fe{lc(shift(@_))};
2206: }
2207:
2208: sub filemimetype {
2209: return $fm{lc(shift(@_))};
2210: }
2211:
2212:
2213: sub filecategoryselect {
2214: my ($name,$value)=@_;
2215: return &select_form($value,$name,
2216: '' => &mt('Any category'),
2217: map { $_,$_ } sort(keys(%category_extensions)));
2218: }
2219:
2220: =pod
2221:
2222: =item * filedescription()
2223:
2224: returns description for a specified file type
2225:
2226: =cut
2227:
2228: sub filedescription {
2229: my $file_description = $fd{lc(shift())};
2230: $file_description =~ s:([\[\]]):~$1:g;
2231: return &mt($file_description);
2232: }
2233:
2234: =pod
2235:
2236: =item * filedescriptionex()
2237:
2238: returns description for a specified file type with
2239: extra formatting
2240:
2241: =cut
2242:
2243: sub filedescriptionex {
2244: my $ex=shift;
2245: my $file_description = $fd{lc($ex)};
2246: $file_description =~ s:([\[\]]):~$1:g;
2247: return '.'.$ex.' '.&mt($file_description);
2248: }
2249:
2250: # End of .tab access
2251: =pod
2252:
2253: =back
2254:
2255: =cut
2256:
2257: # ------------------------------------------------------------------ File Types
2258: sub fileextensions {
2259: return sort(keys(%fe));
2260: }
2261:
2262: # ----------------------------------------------------------- Display Languages
2263: # returns a hash with all desired display languages
2264: #
2265:
2266: sub display_languages {
2267: my %languages=();
2268: foreach my $lang (&preferred_languages()) {
2269: $languages{$lang}=1;
2270: }
2271: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2272: if ($env{'form.displaylanguage'}) {
2273: foreach my $lang (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2274: $languages{$lang}=1;
2275: }
2276: }
2277: return %languages;
2278: }
2279:
2280: sub preferred_languages {
2281: my @languages=();
2282: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2283: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2284: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2285: }
2286: if ($env{'environment.languages'}) {
2287: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
2288: }
2289: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2290: if ($browser) {
2291: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2292: }
2293: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2294: @languages=(@languages,
2295: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2296: }
2297: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2298: @languages=(@languages,
2299: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2300: }
2301: if ($Apache::lonnet::domain_lang_def{
2302: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2303: @languages=(@languages,
2304: $Apache::lonnet::domain_lang_def{
2305: $Apache::lonnet::perlvar{'lonDefDomain'}});
2306: }
2307: # turn "en-ca" into "en-ca,en"
2308: my @genlanguages;
2309: foreach my $lang (@languages) {
2310: unless ($lang=~/\w/) { next; }
2311: push (@genlanguages,$lang);
2312: if ($lang=~/(\-|\_)/) {
2313: push(@genlanguages,(split(/(\-|\_)/,$lang))[0]);
2314: }
2315: }
2316: return @genlanguages;
2317: }
2318:
2319: ###############################################################
2320: ## Student Answer Attempts ##
2321: ###############################################################
2322:
2323: =pod
2324:
2325: =head1 Alternate Problem Views
2326:
2327: =over 4
2328:
2329: =item * get_previous_attempt($symb, $username, $domain, $course,
2330: $getattempt, $regexp, $gradesub)
2331:
2332: Return string with previous attempt on problem. Arguments:
2333:
2334: =over 4
2335:
2336: =item * $symb: Problem, including path
2337:
2338: =item * $username: username of the desired student
2339:
2340: =item * $domain: domain of the desired student
2341:
2342: =item * $course: Course ID
2343:
2344: =item * $getattempt: Leave blank for all attempts, otherwise put
2345: something
2346:
2347: =item * $regexp: if string matches this regexp, the string will be
2348: sent to $gradesub
2349:
2350: =item * $gradesub: routine that processes the string if it matches $regexp
2351:
2352: =back
2353:
2354: The output string is a table containing all desired attempts, if any.
2355:
2356: =cut
2357:
2358: sub get_previous_attempt {
2359: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2360: my $prevattempts='';
2361: no strict 'refs';
2362: if ($symb) {
2363: my (%returnhash)=
2364: &Apache::lonnet::restore($symb,$course,$domain,$username);
2365: if ($returnhash{'version'}) {
2366: my %lasthash=();
2367: my $version;
2368: for ($version=1;$version<=$returnhash{'version'};$version++) {
2369: foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2370: $lasthash{$key}=$returnhash{$version.':'.$key};
2371: }
2372: }
2373: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2374: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2375: foreach my $key (sort(keys(%lasthash))) {
2376: my ($ign,@parts) = split(/\./,$key);
2377: if ($#parts > 0) {
2378: my $data=$parts[-1];
2379: pop(@parts);
2380: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2381: } else {
2382: if ($#parts == 0) {
2383: $prevattempts.='<th>'.$parts[0].'</th>';
2384: } else {
2385: $prevattempts.='<th>'.$ign.'</th>';
2386: }
2387: }
2388: }
2389: if ($getattempt eq '') {
2390: for ($version=1;$version<=$returnhash{'version'};$version++) {
2391: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2392: foreach my $key (sort(keys(%lasthash))) {
2393: my $value;
2394: if ($key =~ /timestamp/) {
2395: $value=scalar(localtime($returnhash{$version.':'.$key}));
2396: } else {
2397: $value=$returnhash{$version.':'.$key};
2398: }
2399: $prevattempts.='<td>'.&unescape($value).' </td>';
2400: }
2401: }
2402: }
2403: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2404: foreach my $key (sort(keys(%lasthash))) {
2405: my $value;
2406: if ($key =~ /timestamp/) {
2407: $value=scalar(localtime($lasthash{$key}));
2408: } else {
2409: $value=$lasthash{$key};
2410: }
2411: $value=&unescape($value);
2412: if ($key =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2413: $prevattempts.='<td>'.$value.' </td>';
2414: }
2415: $prevattempts.='</tr></table></td></tr></table>';
2416: } else {
2417: $prevattempts='Nothing submitted - no attempts.';
2418: }
2419: } else {
2420: $prevattempts='No data.';
2421: }
2422: }
2423:
2424: sub relative_to_absolute {
2425: my ($url,$output)=@_;
2426: my $parser=HTML::TokeParser->new(\$output);
2427: my $token;
2428: my $thisdir=$url;
2429: my @rlinks=();
2430: while ($token=$parser->get_token) {
2431: if ($token->[0] eq 'S') {
2432: if ($token->[1] eq 'a') {
2433: if ($token->[2]->{'href'}) {
2434: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2435: }
2436: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2437: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2438: } elsif ($token->[1] eq 'base') {
2439: $thisdir=$token->[2]->{'href'};
2440: }
2441: }
2442: }
2443: $thisdir=~s-/[^/]*$--;
2444: foreach my $link (@rlinks) {
2445: unless (($link=~/^http:\/\//i) ||
2446: ($link=~/^\//) ||
2447: ($link=~/^javascript:/i) ||
2448: ($link=~/^mailto:/i) ||
2449: ($link=~/^\#/)) {
2450: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$link);
2451: $output=~s/(\"|\'|\=\s*)\Q$link\E(\"|\'|\s|\>)/$1$newlocation$2/;
2452: }
2453: }
2454: # -------------------------------------------------- Deal with Applet codebases
2455: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2456: return $output;
2457: }
2458:
2459: =pod
2460:
2461: =item * get_student_view
2462:
2463: show a snapshot of what student was looking at
2464:
2465: =cut
2466:
2467: sub get_student_view {
2468: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2469: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2470: my (%form);
2471: my @elements=('symb','courseid','domain','username');
2472: foreach my $element (@elements) {
2473: $form{'grade_'.$element}=eval '$'.$element #'
2474: }
2475: if (defined($moreenv)) {
2476: %form=(%form,%{$moreenv});
2477: }
2478: if (defined($target)) { $form{'grade_target'} = $target; }
2479: $feedurl=&Apache::lonnet::clutter($feedurl);
2480: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2481: $userview=~s/\<body[^\>]*\>//gi;
2482: $userview=~s/\<\/body\>//gi;
2483: $userview=~s/\<html\>//gi;
2484: $userview=~s/\<\/html\>//gi;
2485: $userview=~s/\<head\>//gi;
2486: $userview=~s/\<\/head\>//gi;
2487: $userview=~s/action\s*\=/would_be_action\=/gi;
2488: $userview=&relative_to_absolute($feedurl,$userview);
2489: return $userview;
2490: }
2491:
2492: =pod
2493:
2494: =item * get_student_answers()
2495:
2496: show a snapshot of how student was answering problem
2497:
2498: =cut
2499:
2500: sub get_student_answers {
2501: my ($symb,$username,$domain,$courseid,%form) = @_;
2502: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2503: my (%moreenv);
2504: my @elements=('symb','courseid','domain','username');
2505: foreach my $element (@elements) {
2506: $moreenv{'grade_'.$element}=eval '$'.$element #'
2507: }
2508: $moreenv{'grade_target'}='answer';
2509: %moreenv=(%form,%moreenv);
2510: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2511: return $userview;
2512: }
2513:
2514: =pod
2515:
2516: =item * &submlink()
2517:
2518: Inputs: $text $uname $udom $symb $target
2519:
2520: Returns: A link to grades.pm such as to see the SUBM view of a student
2521:
2522: =cut
2523:
2524: ###############################################
2525: sub submlink {
2526: my ($text,$uname,$udom,$symb,$target)=@_;
2527: if (!($uname && $udom)) {
2528: (my $cursymb, my $courseid,$udom,$uname)=
2529: &Apache::lonxml::whichuser($symb);
2530: if (!$symb) { $symb=$cursymb; }
2531: }
2532: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2533: $symb=&escape($symb);
2534: if ($target) { $target="target=\"$target\""; }
2535: return '<a href="/adm/grades?&command=submission&'.
2536: 'symb='.$symb.'&student='.$uname.
2537: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2538: }
2539: ##############################################
2540:
2541: =pod
2542:
2543: =item * &pgrdlink()
2544:
2545: Inputs: $text $uname $udom $symb $target
2546:
2547: Returns: A link to grades.pm such as to see the PGRD view of a student
2548:
2549: =cut
2550:
2551: ###############################################
2552: sub pgrdlink {
2553: my $link=&submlink(@_);
2554: $link=~s/(&command=submission)/$1&showgrading=yes/;
2555: return $link;
2556: }
2557: ##############################################
2558:
2559: =pod
2560:
2561: =item * &pprmlink()
2562:
2563: Inputs: $text $uname $udom $symb $target
2564:
2565: Returns: A link to parmset.pm such as to see the PPRM view of a
2566: student and a specific resource
2567:
2568: =cut
2569:
2570: ###############################################
2571: sub pprmlink {
2572: my ($text,$uname,$udom,$symb,$target)=@_;
2573: if (!($uname && $udom)) {
2574: (my $cursymb, my $courseid,$udom,$uname)=
2575: &Apache::lonxml::whichuser($symb);
2576: if (!$symb) { $symb=$cursymb; }
2577: }
2578: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2579: $symb=&escape($symb);
2580: if ($target) { $target="target=\"$target\""; }
2581: return '<a href="/adm/parmset?&command=set&'.
2582: 'symb='.$symb.'&uname='.$uname.
2583: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2584: }
2585: ##############################################
2586:
2587: =pod
2588:
2589: =back
2590:
2591: =cut
2592:
2593: ###############################################
2594:
2595:
2596: sub timehash {
2597: my @ltime=localtime(shift);
2598: return ( 'seconds' => $ltime[0],
2599: 'minutes' => $ltime[1],
2600: 'hours' => $ltime[2],
2601: 'day' => $ltime[3],
2602: 'month' => $ltime[4]+1,
2603: 'year' => $ltime[5]+1900,
2604: 'weekday' => $ltime[6],
2605: 'dayyear' => $ltime[7]+1,
2606: 'dlsav' => $ltime[8] );
2607: }
2608:
2609: sub maketime {
2610: my %th=@_;
2611: return POSIX::mktime(
2612: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2613: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2614: }
2615:
2616: #########################################
2617:
2618: sub findallcourses {
2619: my ($roles) = @_;
2620: my %roles;
2621: if (ref($roles)) { %roles = map { $_ => 1 } @{$roles}; }
2622: my %courses;
2623: my $now=time;
2624: foreach my $key (keys(%env)) {
2625: if ( $key=~m{^user\.role\.(\w+)\./(\w+)/(\w+)} ) {
2626: my ($role,$domain,$id) = ($1,$2,$3);
2627: next if ($role eq 'ca' || $role eq 'aa');
2628: next if (%roles && !exists($roles{$role}));
2629: my ($starttime,$endtime)=split(/\./,$env{$key});
2630: my $active=1;
2631: if ($starttime) {
2632: if ($now<$starttime) { $active=0; }
2633: }
2634: if ($endtime) {
2635: if ($now>$endtime) { $active=0; }
2636: }
2637: if ($active) { $courses{$domain.'_'.$id}=1; }
2638: }
2639: }
2640: return keys(%courses);
2641: }
2642:
2643: ###############################################
2644: ###############################################
2645:
2646: =pod
2647:
2648: =head1 Domain Template Functions
2649:
2650: =over 4
2651:
2652: =item * &determinedomain()
2653:
2654: Inputs: $domain (usually will be undef)
2655:
2656: Returns: Determines which domain should be used for designs
2657:
2658: =cut
2659:
2660: ###############################################
2661: sub determinedomain {
2662: my $domain=shift;
2663: if (! $domain) {
2664: # Determine domain if we have not been given one
2665: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2666: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2667: if ($env{'request.role.domain'}) {
2668: $domain=$env{'request.role.domain'};
2669: }
2670: }
2671: return $domain;
2672: }
2673: ###############################################
2674: =pod
2675:
2676: =item * &domainlogo()
2677:
2678: Inputs: $domain (usually will be undef)
2679:
2680: Returns: A link to a domain logo, if the domain logo exists.
2681: If the domain logo does not exist, a description of the domain.
2682:
2683: =cut
2684:
2685: ###############################################
2686: sub domainlogo {
2687: my $domain = &determinedomain(shift);
2688: # See if there is a logo
2689: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2690: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2691: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2692: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2693: return $Apache::lonnet::domaindescription{$domain};
2694: } else {
2695: return '';
2696: }
2697: }
2698: ##############################################
2699:
2700: =pod
2701:
2702: =item * &designparm()
2703:
2704: Inputs: $which parameter; $domain (usually will be undef)
2705:
2706: Returns: value of designparamter $which
2707:
2708: =cut
2709:
2710: ##############################################
2711: sub designparm {
2712: my ($which,$domain)=@_;
2713: if ($env{'browser.blackwhite'} eq 'on') {
2714: if ($which=~/\.(font|alink|vlink|link)$/) {
2715: return '#000000';
2716: }
2717: if ($which=~/\.(pgbg|sidebg)$/) {
2718: return '#FFFFFF';
2719: }
2720: if ($which=~/\.tabbg$/) {
2721: return '#CCCCCC';
2722: }
2723: }
2724: if ($env{'environment.color.'.$which}) {
2725: return $env{'environment.color.'.$which};
2726: }
2727: $domain=&determinedomain($domain);
2728: if ($designhash{$domain.'.'.$which}) {
2729: return $designhash{$domain.'.'.$which};
2730: } else {
2731: return $designhash{'default.'.$which};
2732: }
2733: }
2734:
2735: ###############################################
2736: ###############################################
2737:
2738: =pod
2739:
2740: =back
2741:
2742: =head1 HTTP Helpers
2743:
2744: =over 4
2745:
2746: =item * &bodytag()
2747:
2748: Returns a uniform header for LON-CAPA web pages.
2749:
2750: Inputs:
2751:
2752: =over 4
2753:
2754: =item * $title, A title to be displayed on the page.
2755:
2756: =item * $function, the current role (can be undef).
2757:
2758: =item * $addentries, extra parameters for the <body> tag.
2759:
2760: =item * $bodyonly, if defined, only return the <body> tag.
2761:
2762: =item * $domain, if defined, force a given domain.
2763:
2764: =item * $forcereg, if page should register as content page (relevant for
2765: text interface only)
2766:
2767: =item * $customtitle, alternate text to use instead of $title
2768: in the title box that appears, this text
2769: is not auto translated like the $title is
2770:
2771: =item * $notopbar, if true, keep the 'what is this' info but remove the
2772: navigational links
2773:
2774: =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
2775:
2776: =item * $notitle, if true keep the nav controls, but remove the title bar
2777:
2778: =item * $no_inline_link, if true and in remote mode, don't show the
2779: 'Switch To Inline Menu' link
2780:
2781:
2782: =back
2783:
2784: Returns: A uniform header for LON-CAPA web pages.
2785: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2786: If $bodyonly is undef or zero, an html string containing a <body> tag and
2787: other decorations will be returned.
2788:
2789: =cut
2790:
2791: sub bodytag {
2792: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
2793: $notopbar,$bgcolor,$notitle,$no_inline_link)=@_;
2794:
2795: $title=&mt($title);
2796:
2797: $function = &get_users_function() if (!$function);
2798: my $img = &designparm($function.'.img',$domain);
2799: my $font = &designparm($function.'.font',$domain);
2800: my $pgbg = $bgcolor || &designparm($function.'.pgbg',$domain);
2801:
2802: my %design = ( 'style' => 'margin-top: 0px',
2803: 'bgcolor' => $pgbg,
2804: 'text' => $font,
2805: 'alink' => &designparm($function.'.alink',$domain),
2806: 'vlink' => &designparm($function.'.vlink',$domain),
2807: 'link' => &designparm($function.'.link',$domain),);
2808: @$addentries{keys(%design)} = @design{keys(%design)};
2809:
2810: # role and realm
2811: my ($role,$realm) =
2812: &Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
2813: # realm
2814: if ($env{'request.course.id'}) {
2815: $realm = $env{'course.'.$env{'request.course.id'}.'.description'};
2816: }
2817: if (!$realm) { $realm=' '; }
2818: # Set messages
2819: my $messages=&domainlogo($domain);
2820: # Port for miniserver
2821: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2822: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2823:
2824: my $extra_body_attr = &make_attr_string($forcereg,$addentries);
2825:
2826: # construct main body tag
2827: my $bodytag = "<body $extra_body_attr>".
2828: &Apache::lontexconvert::init_math_support();
2829:
2830: if ($bodyonly
2831: || ($env{'request.state'} eq 'construct'
2832: && $env{'environment.remote'} ne 'off' )) {
2833: return $bodytag;
2834: } elsif ($env{'browser.interface'} eq 'textual') {
2835: # Accessibility
2836:
2837: $bodytag.=&Apache::lonmenu::menubuttons($forcereg,$forcereg);
2838: if (!$notitle) {
2839: $bodytag.='<h1>LON-CAPA: '.$title.'</h1>';
2840: }
2841: return $bodytag;
2842: }
2843:
2844:
2845:
2846: my $roleinfo=(<<ENDROLE);
2847: <td class="LC_title_bar_who">
2848: <div class="LC_title_bar_name">
2849: $env{'environment.firstname'}
2850: $env{'environment.middlename'}
2851: $env{'environment.lastname'}
2852: $env{'environment.generation'}
2853:
2854: </div>
2855: <div class="LC_title_bar_role">
2856: $role
2857: </div>
2858: <div class="LC_title_bar_realm">
2859: $realm
2860: </div>
2861: </td>
2862: ENDROLE
2863:
2864: my $titleinfo = '<span class="LC_title_bar_title">'.$title.'</span>';
2865: if ($customtitle) {
2866: $titleinfo = $customtitle;
2867: }
2868: #
2869: # Extra info if you are the DC
2870: my $dc_info = '';
2871: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2872: $env{'course.'.$env{'request.course.id'}.
2873: '.domain'}.'/'})) {
2874: my $cid = $env{'request.course.id'};
2875: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
2876: $dc_info = '('.$dc_info.')';
2877: }
2878:
2879: if ($env{'environment.remote'} eq 'off') {
2880: # No Remote
2881: if ($env{'request.state'} eq 'construct') {
2882: $forcereg=1;
2883: }
2884:
2885: if (!$customtitle && $env{'request.state'} eq 'construct') {
2886: # this is for resources; directories have customtitle, and crumbs
2887: # and select recent are created in lonpubdir.pm
2888: my ($uname,$thisdisfn)=
2889: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2890: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2891: $formaction=~s/\/+/\//g;
2892:
2893: my $parentpath = '';
2894: my $lastitem = '';
2895: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2896: $parentpath = $1;
2897: $lastitem = $2;
2898: } else {
2899: $lastitem = $thisdisfn;
2900: }
2901: $titleinfo =
2902: &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2903: '<b>Construction Space</b>: '.
2904: '<form name="dirs" method="post" action="'.$formaction
2905: .'" target="_top"><tt><b>'
2906: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2907: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2908: .'</form>'
2909: .&Apache::lonmenu::constspaceform();
2910: }
2911:
2912: my $titletable;
2913: if (!$notitle) {
2914: $titletable =
2915: '<table id="LC_title_bar">'.
2916: "<tr><td> $titleinfo $dc_info</td>".$roleinfo.
2917: '</tr></table>';
2918: }
2919: if ($notopbar) {
2920: $bodytag .= $titletable;
2921: } else {
2922: if ($env{'request.state'} eq 'construct') {
2923: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg,
2924: $titletable);
2925: } else {
2926: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg).
2927: $titletable;
2928: }
2929: }
2930: return $bodytag;
2931: }
2932:
2933: #
2934: # Top frame rendering, Remote is up
2935: #
2936:
2937: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2938: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2939:
2940: # Explicit link to get inline menu
2941: my $menu= ($no_inline_link?''
2942: :'<br /><a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a>');
2943: #
2944: if ($notitle) {
2945: return $bodytag;
2946: }
2947: return(<<ENDBODY);
2948: $bodytag
2949: <table id="LC_title_bar" class="LC_with_remote">
2950: <tr><td class="LC_title_bar_role_logo">$upperleft</td>
2951: <td class="LC_title_bar_domain_logo">$messages </td>
2952: </tr>
2953: <tr><td>$titleinfo $dc_info $menu</td>
2954: $roleinfo
2955: </tr>
2956: </table>
2957: ENDBODY
2958: }
2959:
2960: sub make_attr_string {
2961: my ($register,$attr_ref) = @_;
2962:
2963: if ($attr_ref && !ref($attr_ref)) {
2964: die("addentries Must be a hash ref ".
2965: join(':',caller(1))." ".
2966: join(':',caller(0))." ");
2967: }
2968:
2969: if ($register) {
2970: my ($on_load,$on_unload);
2971: foreach my $key (keys(%{$attr_ref})) {
2972: if (lc($key) eq 'onload') {
2973: $on_load.=$attr_ref->{$key}.';';
2974: delete($attr_ref->{$key});
2975:
2976: } elsif (lc($key) eq 'onunload') {
2977: $on_unload.=$attr_ref->{$key}.';';
2978: delete($attr_ref->{$key});
2979: }
2980: }
2981: $attr_ref->{'onload'} =
2982: &Apache::lonmenu::loadevents(). $on_load;
2983: $attr_ref->{'onunload'}=
2984: &Apache::lonmenu::unloadevents().$on_unload;
2985: }
2986:
2987: # Accessibility font enhance
2988: if ($env{'browser.fontenhance'} eq 'on') {
2989: my $style;
2990: foreach my $key (keys(%{$attr_ref})) {
2991: if (lc($key) eq 'style') {
2992: $style.=$attr_ref->{$key}.';';
2993: delete($attr_ref->{$key});
2994: }
2995: }
2996: $attr_ref->{'style'}=$style.'; font-size: x-large;';
2997: }
2998:
2999: if ($env{'browser.blackwhite'} eq 'on') {
3000: delete($attr_ref->{'font'});
3001: delete($attr_ref->{'link'});
3002: delete($attr_ref->{'alink'});
3003: delete($attr_ref->{'vlink'});
3004: delete($attr_ref->{'bgcolor'});
3005: delete($attr_ref->{'background'});
3006: }
3007:
3008: my $attr_string;
3009: foreach my $attr (keys(%$attr_ref)) {
3010: $attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
3011: }
3012: return $attr_string;
3013: }
3014:
3015:
3016: ###############################################
3017: ###############################################
3018:
3019: =pod
3020:
3021: =back
3022:
3023: =head1 HTML Helpers
3024:
3025: =over 4
3026:
3027: =item * &endbodytag()
3028:
3029: Returns a uniform footer for LON-CAPA web pages.
3030:
3031: Inputs: none
3032:
3033: =back
3034:
3035: =cut
3036:
3037: sub endbodytag {
3038: my $endbodytag='</body>';
3039: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
3040: if ( exists( $env{'internal.head.redirect'} ) ) {
3041: $endbodytag=
3042: "<br /><a href=\"$env{'internal.head.redirect'}\">".
3043: &mt('Continue').'</a>'.
3044: $endbodytag;
3045: }
3046: return $endbodytag;
3047: }
3048:
3049: =pod
3050:
3051: =over 4
3052:
3053: =item * &standard_css()
3054:
3055: Returns a style sheet
3056:
3057: Inputs: (all optional)
3058: domain -> force to color decorate a page for a specific
3059: domain
3060: function -> force usage of a specific rolish color scheme
3061: bgcolor -> override the default page bgcolor
3062:
3063: =back
3064:
3065: =cut
3066:
3067: sub standard_css {
3068: my ($function,$domain,$bgcolor) = @_;
3069: $function = &get_users_function() if (!$function);
3070: my $img = &designparm($function.'.img', $domain);
3071: my $tabbg = &designparm($function.'.tabbg', $domain);
3072: my $font = &designparm($function.'.font', $domain);
3073: my $sidebg = &designparm($function.'.sidebg',$domain);
3074: my $pgbg = $bgcolor ||
3075: &designparm($function.'.pgbg', $domain);
3076: my $alink = &designparm($function.'.alink', $domain);
3077: my $vlink = &designparm($function.'.vlink', $domain);
3078: my $link = &designparm($function.'.link', $domain);
3079:
3080: my $sans = 'Arial,Helvetica,sans-serif';
3081: my $data_table_head = $tabbg;
3082: my $data_table_light = '#EEEEEE';
3083: my $data_table_dark = '#DDD';
3084: my $data_table_highlight = '#FFFF00';
3085: my $mail_new = '#FFBB77';
3086: my $mail_new_hover = '#DD9955';
3087: my $mail_read = '#BBBB77';
3088: my $mail_read_hover = '#999944';
3089: my $mail_replied = '#AAAA88';
3090: my $mail_replied_hover = '#888855';
3091: my $mail_other = '#99BBBB';
3092: my $mail_other_hover = '#669999';
3093:
3094: return <<END;
3095: h1, h2, h3, th { font-family: $sans }
3096: a:focus { color: red; background: yellow }
3097: table.thinborder { border-collapse: collapse; }
3098: table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
3099: form, .inline { display: inline; }
3100: .center { text-align: center; }
3101: .filename {font-family: monospace;}
3102: .LC_error {
3103: color: red;
3104: font-size: larger;
3105: }
3106: .LC_success {
3107: color: green;
3108: }
3109:
3110: table#LC_top_nav, table#LC_menubuttons, table#LC_nav_location, table#LC_breadcrumbs {
3111: width: 100%;
3112: background: $pgbg;
3113: border: 0px;
3114: border-spacing: 2px 1px;
3115: padding: 0px;
3116: margin: 0px;
3117: border-collapse: separate;
3118: }
3119: table#LC_title_bar {
3120: width: 100%;
3121: border: 0;
3122: border-spacing: 0px 1px;
3123: padding: 0px 2px 0px 2px;
3124: background: $pgbg;
3125: font-family: $sans;
3126: border-collapse: collapse;
3127: }
3128: table#LC_title_bar.LC_with_remote {
3129: width: 100%;
3130: border: 0;
3131: border-spacing: 0;
3132: background: $pgbg;
3133: font-family: $sans;
3134: border-collapse: collapse;
3135: }
3136: table#LC_title_bar td {
3137: padding: 3px;
3138: background: $tabbg;
3139: }
3140: table#LC_title_bar td.LC_title_bar_who {
3141: background: $tabbg;
3142: color: $font;
3143: font: medium $sans;
3144: text-align: right;
3145: }
3146: span.LC_title_bar_title {
3147: font: bold xx-large $sans;
3148: }
3149: table#LC_title_bar td.LC_title_bar_domain_logo {
3150: background: $sidebg;
3151: text-align: right;
3152: padding: 0px;
3153: }
3154: table#LC_title_bar td.LC_title_bar_role_logo {
3155: background: $sidebg;
3156: padding: 0px;
3157: }
3158:
3159: table#LC_menubuttons_mainmenu {
3160: background: $pgbg;
3161: border: 0px;
3162: border-spacing: 1px;
3163: padding: 0px;
3164: margin: 0px;
3165: border-collapse: separate;
3166: }
3167: table#LC_menubuttons img, table#LC_menubuttons_mainmenu img {
3168: border: 0px;
3169: }
3170: table#LC_top_nav td {
3171: background: $tabbg;
3172: }
3173: table#LC_top_nav td a, div#LC_top_nav a {
3174: color: $font;
3175: font-family: $sans;
3176: }
3177: table#LC_top_nav td.LC_top_nav_logo {
3178: background: $tabbg;
3179: text-align: right;
3180: }
3181: table#LC_breadcrumbs td {
3182: background: $tabbg;
3183: color: $font;
3184: font-family: $sans;
3185: font-size: smaller;
3186: }
3187: table#LC_breadcrumbs td.LC_breadcrumb_component {
3188: background: $tabbg;
3189: color: $font;
3190: font-family: $sans;
3191: font-size: larger;
3192: text-align: right;
3193: }
3194: .LC_menubuttons_inline_text {
3195: color: $font;
3196: font-family: $sans;
3197: font-size: smaller;
3198: }
3199:
3200: td.LC_menubuttons_text {
3201: color: $font;
3202: font-family: $sans;
3203: }
3204: td.LC_menubuttons_img {
3205: background: $tabbg;
3206: }
3207: .LC_current_location {
3208: font-family: $sans;
3209: background: $tabbg;
3210: }
3211: .LC_new_mail {
3212: font-family: $sans;
3213: font-weight: bold;
3214: }
3215:
3216: table.LC_data_table, table.LC_mail_list {
3217: border: 1px solid #000000;
3218: border-collapse: seperate;
3219: }
3220: table.LC_data_table tr th, table.LC_calendar tr th, table.LC_mail_list tr th {
3221: font-weight: bold;
3222: background-color: $data_table_head;
3223: }
3224: table.LC_data_table tr td {
3225: background-color: $data_table_light;
3226: }
3227: table.LC_data_table tr.LC_even_row td {
3228: background-color: $data_table_dark;
3229: }
3230: table.LC_data_table tr.LC_empty td {
3231: background-color: #FFFFFF;
3232: }
3233:
3234: table.LC_calendar {
3235: border: 1px solid #000000;
3236: border-collapse: collapse;
3237: }
3238: table.LC_calendar_pickdate {
3239: font-size: xx-small;
3240: }
3241: table.LC_calendar tr td {
3242: border: 1px solid #000000;
3243: vertical-align: top;
3244: }
3245: table.LC_calendar tr td.LC_calendar_day_empty {
3246: background-color: $data_table_dark;
3247: }
3248: table.LC_calendar tr td.LC_calendar_day_current {
3249: background-color: $data_table_highlight;
3250: }
3251:
3252: table.LC_mail_list tr.LC_mail_new {
3253: background-color: $mail_new;
3254: }
3255: table.LC_mail_list tr.LC_mail_new:hover {
3256: background-color: $mail_new_hover;
3257: }
3258: table.LC_mail_list tr.LC_mail_read {
3259: background-color: $mail_read;
3260: }
3261: table.LC_mail_list tr.LC_mail_read:hover {
3262: background-color: $mail_read_hover;
3263: }
3264: table.LC_mail_list tr.LC_mail_replied {
3265: background-color: $mail_replied;
3266: }
3267: table.LC_mail_list tr.LC_mail_replied:hover {
3268: background-color: $mail_replied_hover;
3269: }
3270: table.LC_mail_list tr.LC_mail_other {
3271: background-color: $mail_other;
3272: }
3273: table.LC_mail_list tr.LC_mail_other:hover {
3274: background-color: $mail_other_hover;
3275: }
3276: END
3277: }
3278:
3279: =pod
3280:
3281: =over 4
3282:
3283: =item * &headtag()
3284:
3285: Returns a uniform footer for LON-CAPA web pages.
3286:
3287: Inputs: $title - optional title for the head
3288: $head_extra - optional extra HTML to put inside the <head>
3289: $args - optional arguments
3290: force_register - if is true call registerurl so the remote is
3291: informed
3292: redirect -> array ref of seconds before redirect occurs
3293: url to redirect to
3294: (side effect of setting
3295: $env{'internal.head.redirect'} to the url
3296: redirected too)
3297: domain -> force to color decorate a page for a specific
3298: domain
3299: function -> force usage of a specific rolish color scheme
3300: bgcolor -> override the default page bgcolor
3301:
3302: =back
3303:
3304: =cut
3305:
3306: sub headtag {
3307: my ($title,$head_extra,$args) = @_;
3308:
3309: my $function = $args->{'function'} || &get_users_function();
3310: my $domain = $args->{'domain'} || &determinedomain();
3311: my $bgcolor = $args->{'bgcolor'} || &designparm($function.'.pgbg',$domain);
3312: my $url = join(':',$env{'user.name'},$env{'user.domain'},
3313: $env{'environment.color.timestamp'},
3314: $function,$domain,$bgcolor);
3315:
3316: $url = '/adm/css/'.&escape($url).'.css';
3317:
3318: my $result =
3319: '<head>'.
3320: '<link rel="stylesheet" type="text/css" href="'.$url.'" />'.
3321: &font_settings().
3322: &Apache::lonhtmlcommon::htmlareaheaders();
3323:
3324: if ($args->{'force_register'}) {
3325: $result .= &Apache::lonmenu::registerurl(1);
3326: }
3327:
3328: if (ref($args->{'redirect'})) {
3329: my ($time,$url) = @{$args->{'redirect'}};
3330: $url = &Apache::lonenc::check_encrypt($url);
3331: $env{'internal.head.redirect'} = $url;
3332: $result.=<<ADDMETA
3333: <meta http-equiv="pragma" content="no-cache" />
3334: <meta http-equiv="Refresh" content="$time; url=$url" />
3335: ADDMETA
3336: }
3337: if (!defined($title)) {
3338: $title = 'The LearningOnline Network with CAPA';
3339: }
3340:
3341: $result .= '<title> LON-CAPA '.&mt($title).'</title>'.$head_extra;
3342: return $result;
3343: }
3344:
3345: =pod
3346:
3347: =over 4
3348:
3349: =item * &font_settings()
3350:
3351: Returns neccessary <meta> to set the proper encoding
3352:
3353: Inputs: none
3354:
3355: =back
3356:
3357: =cut
3358:
3359: sub font_settings {
3360: my $headerstring='';
3361: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
3362: $headerstring.=
3363: '<meta Content-Type="text/html; charset=x-mac-roman" />';
3364: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
3365: $headerstring.=
3366: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
3367: }
3368: return $headerstring;
3369: }
3370:
3371: =pod
3372:
3373: =over 4
3374:
3375: =item * &xml_begin()
3376:
3377: Returns the needed doctype and <html>
3378:
3379: Inputs: none
3380:
3381: =back
3382:
3383: =cut
3384:
3385: sub xml_begin {
3386: my $output='';
3387:
3388: &Apache::lonhtmlcommon::init_htmlareafields();
3389:
3390: if ($env{'browser.mathml'}) {
3391: $output='<?xml version="1.0"?>'
3392: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
3393: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
3394:
3395: # .'<!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">] >'
3396: .'<!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">'
3397: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
3398: .'xmlns="http://www.w3.org/1999/xhtml">';
3399: } else {
3400: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
3401: }
3402: return $output;
3403: }
3404:
3405: =pod
3406:
3407: =over 4
3408:
3409: =item * &endheadtag()
3410:
3411: Returns a uniform </head> for LON-CAPA web pages.
3412:
3413: Inputs: none
3414:
3415: =back
3416:
3417: =cut
3418:
3419: sub endheadtag {
3420: return '</head>';
3421: }
3422:
3423: =pod
3424:
3425: =over 4
3426:
3427: =item * &head()
3428:
3429: Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
3430:
3431: Inputs: $title - optional title for the page
3432: $head_extra - optional extra HTML to put inside the <head>
3433: =back
3434:
3435: =cut
3436:
3437: sub head {
3438: my ($title,$head_extra,$args) = @_;
3439: return &headtag($title,$head_extra,$args).&endheadtag();
3440: }
3441:
3442: =pod
3443:
3444: =over 4
3445:
3446: =item * &start_page()
3447:
3448: Returns a complete <html> .. <body> section for LON-CAPA web pages.
3449:
3450: Inputs: $title - optional title for the page
3451: $head_extra - optional extra HTML to incude inside the <head>
3452: $args - additional optional args supported are:
3453: only_body -> is true will set &bodytag() onlybodytag
3454: arg on
3455: no_nav_bar -> is true will set &bodytag() notopbar arg on
3456: add_entries -> additional attributes to add to the <body>
3457: domain -> force to color decorate a page for a
3458: specific domain
3459: function -> force usage of a specific rolish color
3460: scheme
3461: redirect -> see &headtag()
3462: bgcolor -> override the default page bg color
3463: js_ready -> return a string ready for being used in
3464: a javascript writeln
3465: html_encode -> return a string ready for being used in
3466: a html attribute
3467: force_register -> if is true will turn on the &bodytag()
3468: $forcereg arg
3469: body_title -> alternate text to use instead of $title
3470: in the title box that appears, this text
3471: is not auto translated like the $title is
3472: frameset -> if true will start with a <frameset>
3473: rather than <body>
3474: no_title -> if true the title bar won't be shown
3475: skip_phases -> hash ref of
3476: head -> skip the <html><head> generation
3477: body -> skip all <body> generation
3478:
3479: no_inline_link -> if true and in remote mode, don't show the
3480: 'Switch To Inline Menu' link
3481:
3482: =back
3483:
3484: =cut
3485:
3486: sub start_page {
3487: my ($title,$head_extra,$args) = @_;
3488: #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
3489: my %head_args;
3490: foreach my $arg ('redirect','force_register','domain','function',
3491: 'bgcolor') {
3492: if (defined($args->{$arg})) {
3493: $head_args{$arg} = $args->{$arg};
3494: }
3495: }
3496:
3497: $env{'internal.start_page'}++;
3498: my $result;
3499: if (! exists($args->{'skip_phases'}{'head'}) ) {
3500: $result.=
3501: &xml_begin().
3502: &headtag($title,$head_extra,\%head_args).&endheadtag();
3503: }
3504:
3505: if (! exists($args->{'skip_phases'}{'body'}) ) {
3506: if ($args->{'frameset'}) {
3507: my $attr_string = &make_attr_string($args->{'force_register'},
3508: $args->{'add_entries'});
3509: $result .= "\n<frameset $attr_string>\n";
3510: } else {
3511: $result .=
3512: &bodytag($title,
3513: $args->{'function'}, $args->{'add_entries'},
3514: $args->{'only_body'}, $args->{'domain'},
3515: $args->{'force_register'}, $args->{'body_title'},
3516: $args->{'no_nav_bar'}, $args->{'bgcolor'},
3517: $args->{'no_title'}, $args->{'no_inline_link'});
3518: }
3519: }
3520:
3521: if ($args->{'js_ready'}) {
3522: $result = &js_ready($result);
3523: }
3524: if ($args->{'html_encode'}) {
3525: $result = &html_encode($result);
3526: }
3527: return $result;
3528: }
3529:
3530:
3531: =pod
3532:
3533: =over 4
3534:
3535: =item * &head()
3536:
3537: Returns a complete </body></html> section for LON-CAPA web pages.
3538:
3539: Inputs: $args - additional optional args supported are:
3540: js_ready -> return a string ready for being used in
3541: a javascript writeln
3542: html_encode -> return a string ready for being used in
3543: a html attribute
3544: frameset -> if true will start with a <frameset>
3545: rather than <body>
3546: =back
3547:
3548: =cut
3549:
3550: sub end_page {
3551: my ($args) = @_;
3552: #&Apache::lonnet::logthis("end_page ".join(':',caller(0)));
3553: $env{'internal.end_page'}++;
3554: my $result;
3555: if ($args->{'discussion'}) {
3556: my ($target,$parser);
3557: if (ref($args->{'discussion'})) {
3558: ($target,$parser) =($args->{'discussion'}{'target'},
3559: $args->{'discussion'}{'parser'});
3560: }
3561: $result .= &Apache::lonxml::xmlend($target,$parser);
3562: }
3563:
3564: if ($args->{'frameset'}) {
3565: $result .= '</frameset>';
3566: } else {
3567: $result .= &endbodytag();
3568: }
3569: $result .= "\n</html>";
3570:
3571: if ($args->{'js_ready'}) {
3572: $result = &js_ready($result);
3573: }
3574:
3575: if ($args->{'html_encode'}) {
3576: $result = &html_encode($result);
3577: }
3578:
3579: return $result;
3580: }
3581:
3582: sub html_encode {
3583: my ($result) = @_;
3584:
3585: $result = &HTML::Entities::encode($result,'<>&"');
3586:
3587: return $result;
3588: }
3589: sub js_ready {
3590: my ($result) = @_;
3591:
3592: $result =~ s/[\n\r]/ /xmsg;
3593: $result =~ s/\\/\\\\/xmsg;
3594: $result =~ s/'/\\'/xmsg;
3595: $result =~ s{</script>}{</scrip'+'t>}xmsg;
3596:
3597: return $result;
3598: }
3599:
3600: sub validate_page {
3601: if ( exists($env{'internal.start_page'})
3602: && $env{'internal.start_page'} > 1) {
3603: &Apache::lonnet::logthis('start_page called multiple times '.
3604: $env{'internal.start_page'}.' '.
3605: $ENV{'request.filename'});
3606: }
3607: if ( exists($env{'internal.end_page'})
3608: && $env{'internal.end_page'} > 1) {
3609: &Apache::lonnet::logthis('end_page called multiple times '.
3610: $env{'internal.end_page'}.' '.
3611: $env{'request.filename'});
3612: }
3613: if ( exists($env{'internal.start_page'})
3614: && ! exists($env{'internal.end_page'})) {
3615: &Apache::lonnet::logthis('start_page called without end_page '.
3616: $env{'request.filename'});
3617: }
3618: if ( ! exists($env{'internal.start_page'})
3619: && exists($env{'internal.end_page'})) {
3620: &Apache::lonnet::logthis('end_page called without start_page'.
3621: $env{'request.filename'});
3622: }
3623: }
3624:
3625: sub simple_error_page {
3626: my ($r,$title,$msg) = @_;
3627: my $page =
3628: &Apache::loncommon::start_page($title).
3629: &mt($msg).
3630: &Apache::loncommon::end_page();
3631: if (ref($r)) {
3632: $r->print($page);
3633: return;
3634: }
3635: return $page;
3636: }
3637:
3638: {
3639: my $row_count;
3640: sub start_data_table {
3641: undef($row_count);
3642: return '<table class="LC_data_table">';
3643: }
3644:
3645: sub end_data_table {
3646: undef($row_count);
3647: return '</table>';
3648: }
3649:
3650: sub start_data_table_row {
3651: $row_count++;
3652: return '<tr '.(($row_count % 2)?'':'class="LC_even_row"').'>';
3653: }
3654:
3655: sub end_data_table_row {
3656: return '</tr>';
3657: }
3658:
3659: sub start_data_table_header_row {
3660: return '<tr class="LC_header_row">';
3661: }
3662:
3663: sub end_data_table_header_row {
3664: return '</tr>';
3665: }
3666: }
3667:
3668: ###############################################
3669:
3670: =pod
3671:
3672: =over 4
3673:
3674: =item get_users_function
3675:
3676: Used by &bodytag to determine the current users primary role.
3677: Returns either 'student','coordinator','admin', or 'author'.
3678:
3679: =cut
3680:
3681: ###############################################
3682: sub get_users_function {
3683: my $function = 'student';
3684: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
3685: $function='coordinator';
3686: }
3687: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
3688: $function='admin';
3689: }
3690: if (($env{'request.role'}=~/^(au|ca)/) ||
3691: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
3692: $function='author';
3693: }
3694: return $function;
3695: }
3696:
3697: ###############################################
3698:
3699: =pod
3700:
3701: =item check_user_status
3702:
3703: Determines current status of supplied role for a
3704: specific user. Roles can be active, previous or future.
3705:
3706: Inputs:
3707: user's domain, user's username, course's domain,
3708: course's number, optional section/group.
3709:
3710: Outputs:
3711: role status: active, previous or future.
3712:
3713: =cut
3714:
3715: sub check_user_status {
3716: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
3717: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
3718: my @uroles = keys %userinfo;
3719: my $srchstr;
3720: my $active_chk = 'none';
3721: if (@uroles > 0) {
3722: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
3723: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3724: } else {
3725: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3726: if (grep/^$srchstr$/,@uroles) {
3727: my $role_end = 0;
3728: my $role_start = 0;
3729: $active_chk = 'active';
3730: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3731: $role_end = $2;
3732: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3733: $role_start = $3;
3734: }
3735: }
3736: if ($role_start > 0) {
3737: if (time < $role_start) {
3738: $active_chk = 'future';
3739: }
3740: }
3741: if ($role_end > 0) {
3742: if (time > $role_end) {
3743: $active_chk = 'previous';
3744: }
3745: }
3746: }
3747: }
3748: return $active_chk;
3749: }
3750:
3751: ###############################################
3752:
3753: =pod
3754:
3755: =item get_sections
3756:
3757: Determines all the sections for a course including
3758: sections with students and sections containing other roles.
3759: Incoming parameters: domain, course number, reference to
3760: section hash (keys to be section/group IDs), reference to
3761: array containing roles for which sections should be gathered
3762: (optional). If the fourth argument is undefined, sections
3763: are gathered for any role.
3764:
3765: Returns number of sections.
3766:
3767: =cut
3768:
3769: ###############################################
3770: sub get_sections {
3771: my ($cdom,$cnum,$possible_roles) = @_;
3772: if (!defined($cdom) || !defined($cnum)) {
3773: my $cid = $env{'request.course.id'};
3774:
3775: return if (!defined($cid));
3776:
3777: $cdom = $env{'course.'.$cid.'.domain'};
3778: $cnum = $env{'course.'.$cid.'.num'};
3779: }
3780:
3781: my %sectioncount;
3782:
3783: if (!defined($possible_roles) || (grep(/^st$/,@$possible_roles))) {
3784: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
3785: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3786: my $status_index = &Apache::loncoursedata::CL_STATUS();
3787: while (my ($student,$data) = each(%$classlist)) {
3788: my ($section,$status) = ($data->[$sec_index],
3789: $data->[$status_index]);
3790: unless ($section eq '-1' || $section =~ /^\s*$/) {
3791: $sectioncount{$section}++;
3792: }
3793: }
3794: }
3795: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3796: foreach my $user (sort(keys(%courseroles))) {
3797: if ($user !~ /^(\w{2})/) { next; }
3798: my ($role) = ($user =~ /^(\w{2})/);
3799: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3800: my $section;
3801: if ($role eq 'cr' &&
3802: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3803: $section=$1;
3804: }
3805: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3806: if (!defined($section) || $section eq '-1') { next; }
3807: $sectioncount{$section}++;
3808: }
3809: return %sectioncount;
3810: }
3811:
3812: ###############################################
3813:
3814: =pod
3815:
3816: =item coursegroups
3817:
3818: Retrieve information about groups in a course,
3819:
3820: Input:
3821: 1. Reference to hash to populate with group information.
3822: 2. Optional course domain
3823: 3. Optional course number
3824: 4. Optional group name
3825:
3826: Course domain and number will be taken from user's
3827: environment if not supplied. Optional group name will'
3828: be passed to lonnet::get_coursegroups() as a regexp to
3829: use in the call to the dump function.
3830:
3831: Output
3832: Returns number of groups in the course (subject to the
3833: optional group name filter).
3834:
3835: Side effects:
3836: Populates the referenced curr_groups hash, with key,
3837: value pairs. Keys are group names, corresponding values
3838: are scalars containing group information in XML. This
3839: can be sent to &get_group_settings() to be parsed.
3840:
3841: =cut
3842:
3843: ###############################################
3844:
3845: sub coursegroups {
3846: my ($cdom,$cnum,$group) = @_;
3847: if (!defined($cdom) || !defined($cnum)) {
3848: my $cid = $env{'request.course.id'};
3849:
3850: return if (!defined($cid));
3851:
3852: $cdom = $env{'course.'.$cid.'.domain'};
3853: $cnum = $env{'course.'.$cid.'.num'};
3854: }
3855: my %curr_groups = &Apache::lonnet::get_coursegroups($cdom,$cnum,$group);
3856: my ($tmp) = keys(%curr_groups);
3857: if ($tmp=~/^(con_lost|no_such_host|error: [^2] )/) {
3858: undef(%curr_groups);
3859: &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.$cdom);
3860: } elsif ($tmp=~/^error: 2 /) {
3861: undef(%curr_groups);
3862: }
3863: return %curr_groups;
3864: }
3865:
3866: ###############################################
3867:
3868: =pod
3869:
3870: =item get_group_settings
3871:
3872: Uses TokeParser to extract group information from the
3873: XML used to describe course groups.
3874:
3875: Input:
3876: Scalar containing XML - as retrieved from &coursegroups().
3877:
3878: Output:
3879: Hash containing group information as key=values for (a), and
3880: hash of hashes for (b)
3881:
3882: Keys (in two categories):
3883: (a) groupname, creator, creation, modified, startdate,enddate.
3884: Corresponding values are name of the group, creator of the group
3885: (username:domain), UNIX time for date group was created, and
3886: settings were last modified, and default start and end access
3887: times for group members.
3888:
3889: (b) functions returned in hash of hashes.
3890: Outer hash key is functions.
3891: Inner hash keys are chat,discussion,email,files,homepage,roster.
3892: Corresponding values are either on or off, depending on
3893: whether this type of functionality is available for the group.
3894:
3895: =cut
3896:
3897: ###############################################
3898:
3899: sub get_group_settings {
3900: my ($groupinfo)=@_;
3901: my $parser=HTML::TokeParser->new(\$groupinfo);
3902: my $token;
3903: my $tool = '';
3904: my $role = '';
3905: my %content=();
3906: while ($token=$parser->get_token) {
3907: if ($token->[0] eq 'S') {
3908: my $entry=$token->[1];
3909: if ($entry eq 'functions' || $entry eq 'autosec') {
3910: %{$content{$entry}} = ();
3911: $tool = $entry;
3912: } elsif ($entry eq 'role') {
3913: if ($tool eq 'autosec') {
3914: $role = $token->[2]{id};
3915: }
3916: } else {
3917: my $value=$parser->get_text('/'.$entry);
3918: if ($entry eq 'name') {
3919: if ($tool eq 'functions') {
3920: my $function = $token->[2]{id};
3921: $content{$tool}{$function} = $value;
3922: }
3923: } elsif ($entry eq 'groupname') {
3924: $content{$entry}=&unescape($value);
3925: } elsif (($entry eq 'roles') || ($entry eq 'types') ||
3926: ($entry eq 'sectionpick') || ($entry eq 'defpriv')) {
3927: push(@{$content{$entry}},$value);
3928: } elsif ($entry eq 'section') {
3929: if ($tool eq 'autosec' && $role ne '') {
3930: push(@{$content{$tool}{$role}},$value);
3931: }
3932: } else {
3933: $content{$entry}=$value;
3934: }
3935: }
3936: } elsif ($token->[0] eq 'E') {
3937: if ($token->[1] eq 'functions' || $token->[1] eq 'autosec') {
3938: $tool = '';
3939: } elsif ($token->[1] eq 'role') {
3940: $role = '';
3941: }
3942:
3943: }
3944: }
3945: return %content;
3946: }
3947:
3948: sub check_group_access {
3949: my ($group) = @_;
3950: my $access = 1;
3951: my $now = time;
3952: my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
3953: if (($end!=0) && ($end<$now)) { $access = 0; }
3954: if (($start!=0) && ($start>$now)) { $access=0; }
3955: return $access;
3956: }
3957:
3958: ###############################################
3959:
3960: =pod
3961:
3962: =item get_course_users
3963:
3964: Retrieves usernames:domains for users in the specified course
3965: with specific role(s), and access status.
3966:
3967: Incoming parameters:
3968: 1. course domain
3969: 2. course number
3970: 3. access status: users must have - either active,
3971: previous, future, or all.
3972: 4. reference to array of permissible roles
3973: 5. reference to array of section restrictions (optional)
3974: 6. reference to results object (hash of hashes).
3975: 7. reference to optional userdata hash
3976: Keys of top level hash are roles.
3977: Keys of inner hashes are username:domain, with
3978: values set to access type.
3979: Optional userdata hash returns an array with arguments in the
3980: same order as loncoursedata::get_classlist() for student data.
3981:
3982: Entries for end, start, section and status are blank because
3983: of the possibility of multiple values for non-student roles.
3984:
3985: =cut
3986:
3987: ###############################################
3988:
3989: sub get_course_users {
3990: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
3991: my %idx = ();
3992:
3993: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
3994: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
3995: $idx{end} = &Apache::loncoursedata::CL_END();
3996: $idx{start} = &Apache::loncoursedata::CL_START();
3997: $idx{id} = &Apache::loncoursedata::CL_ID();
3998: $idx{section} = &Apache::loncoursedata::CL_SECTION();
3999: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
4000: $idx{status} = &Apache::loncoursedata::CL_STATUS();
4001:
4002: if (grep(/^st$/,@{$roles})) {
4003: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
4004: my $now = time;
4005: foreach my $student (keys(%{$classlist})) {
4006: my $match = 0;
4007: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
4008: unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
4009: @{$sections})) {
4010: next;
4011: }
4012: }
4013: if (defined($$types{'active'})) {
4014: if ($$classlist{$student}[$idx{status}] eq 'Active') {
4015: push(@{$$users{st}{$student}},'active');
4016: $match = 1;
4017: }
4018: }
4019: if (defined($$types{'previous'})) {
4020: if ($$classlist{$student}[$idx{end}] <= $now) {
4021: push(@{$$users{st}{$student}},'previous');
4022: $match = 1;
4023: }
4024: }
4025: if (defined($$types{'future'})) {
4026: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
4027: push(@{$$users{st}{$student}},'future');
4028: $match = 1;
4029: }
4030: }
4031: if ($match && defined($userdata)) {
4032: $$userdata{$student} = $$classlist{$student};
4033: }
4034: }
4035: }
4036: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
4037: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
4038: foreach my $person (@coursepersonnel) {
4039: my $match = 0;
4040: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
4041: $user =~ s/:$//;
4042: if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
4043: my ($uname,$udom,$usec) = split(/:/,$user);
4044: if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
4045: @{$sections} > 0) {
4046: unless(grep(/^\Q$usec\E$/,@{$sections})) {
4047: next;
4048: }
4049: }
4050: if ($uname ne '' && $udom ne '') {
4051: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
4052: foreach my $type (keys(%{$types})) {
4053: if ($status eq $type) {
4054: @{$$users{$role}{$user}} = $type;
4055: $match = 1;
4056: }
4057: }
4058: if ($match && defined($userdata) &&
4059: !exists($$userdata{$uname.':'.$udom})) {
4060: &get_user_info($udom,$uname,\%idx,$userdata);
4061: }
4062: }
4063: }
4064: }
4065: if (grep(/^ow$/,@{$roles})) {
4066: if ((defined($cdom)) && (defined($cnum))) {
4067: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
4068: if ( defined($csettings{'internal.courseowner'}) ) {
4069: my $owner = $csettings{'internal.courseowner'};
4070: @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
4071: if (defined($userdata) &&
4072: !exists($$userdata{$owner.':'.$cdom})) {
4073: &get_user_info($cdom,$owner,\%idx,$userdata);
4074: }
4075: }
4076: }
4077: }
4078: }
4079: return;
4080: }
4081:
4082: sub get_user_info {
4083: my ($udom,$uname,$idx,$userdata) = @_;
4084: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
4085: &plainname($uname,$udom,'lastname');
4086: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
4087: $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
4088: return;
4089: }
4090:
4091: =pod
4092:
4093: =item * get_unprocessed_cgi($query,$possible_names)
4094:
4095: Modify the %env hash to contain unprocessed CGI form parameters held in
4096: $query. The parameters listed in $possible_names (an array reference),
4097: will be set in $env{'form.name'} if they do not already exist.
4098:
4099: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
4100: $possible_names is an ref to an array of form element names. As an example:
4101: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
4102: will result in $env{'form.uname'} and $env{'form.udom'} being set.
4103:
4104: =cut
4105:
4106: sub get_unprocessed_cgi {
4107: my ($query,$possible_names)= @_;
4108: # $Apache::lonxml::debug=1;
4109: foreach my $pair (split(/&/,$query)) {
4110: my ($name, $value) = split(/=/,$pair);
4111: $name = &unescape($name);
4112: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
4113: $value =~ tr/+/ /;
4114: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
4115: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
4116: }
4117: }
4118: }
4119:
4120: =pod
4121:
4122: =item * cacheheader()
4123:
4124: returns cache-controlling header code
4125:
4126: =cut
4127:
4128: sub cacheheader {
4129: unless ($env{'request.method'} eq 'GET') { return ''; }
4130: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
4131: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
4132: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
4133: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
4134: return $output;
4135: }
4136:
4137: =pod
4138:
4139: =item * no_cache($r)
4140:
4141: specifies header code to not have cache
4142:
4143: =cut
4144:
4145: sub no_cache {
4146: my ($r) = @_;
4147: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
4148: $env{'request.method'} ne 'GET') { return ''; }
4149: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
4150: $r->no_cache(1);
4151: $r->header_out("Expires" => $date);
4152: $r->header_out("Pragma" => "no-cache");
4153: }
4154:
4155: sub content_type {
4156: my ($r,$type,$charset) = @_;
4157: if ($r) {
4158: # Note that printout.pl calls this with undef for $r.
4159: &no_cache($r);
4160: }
4161: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
4162: unless ($charset) {
4163: $charset=&Apache::lonlocal::current_encoding;
4164: }
4165: if ($charset) { $type.='; charset='.$charset; }
4166: if ($r) {
4167: $r->content_type($type);
4168: } else {
4169: print("Content-type: $type\n\n");
4170: }
4171: }
4172:
4173: =pod
4174:
4175: =item * add_to_env($name,$value)
4176:
4177: adds $name to the %env hash with value
4178: $value, if $name already exists, the entry is converted to an array
4179: reference and $value is added to the array.
4180:
4181: =cut
4182:
4183: sub add_to_env {
4184: my ($name,$value)=@_;
4185: if (defined($env{$name})) {
4186: if (ref($env{$name})) {
4187: #already have multiple values
4188: push(@{ $env{$name} },$value);
4189: } else {
4190: #first time seeing multiple values, convert hash entry to an arrayref
4191: my $first=$env{$name};
4192: undef($env{$name});
4193: push(@{ $env{$name} },$first,$value);
4194: }
4195: } else {
4196: $env{$name}=$value;
4197: }
4198: }
4199:
4200: =pod
4201:
4202: =item * get_env_multiple($name)
4203:
4204: gets $name from the %env hash, it seemlessly handles the cases where multiple
4205: values may be defined and end up as an array ref.
4206:
4207: returns an array of values
4208:
4209: =cut
4210:
4211: sub get_env_multiple {
4212: my ($name) = @_;
4213: my @values;
4214: if (defined($env{$name})) {
4215: # exists is it an array
4216: if (ref($env{$name})) {
4217: @values=@{ $env{$name} };
4218: } else {
4219: $values[0]=$env{$name};
4220: }
4221: }
4222: return(@values);
4223: }
4224:
4225:
4226: =pod
4227:
4228: =back
4229:
4230: =head1 CSV Upload/Handling functions
4231:
4232: =over 4
4233:
4234: =item * upfile_store($r)
4235:
4236: Store uploaded file, $r should be the HTTP Request object,
4237: needs $env{'form.upfile'}
4238: returns $datatoken to be put into hidden field
4239:
4240: =cut
4241:
4242: sub upfile_store {
4243: my $r=shift;
4244: $env{'form.upfile'}=~s/\r/\n/gs;
4245: $env{'form.upfile'}=~s/\f/\n/gs;
4246: $env{'form.upfile'}=~s/\n+/\n/gs;
4247: $env{'form.upfile'}=~s/\n+$//gs;
4248:
4249: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
4250: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
4251: {
4252: my $datafile = $r->dir_config('lonDaemons').
4253: '/tmp/'.$datatoken.'.tmp';
4254: if ( open(my $fh,">$datafile") ) {
4255: print $fh $env{'form.upfile'};
4256: close($fh);
4257: }
4258: }
4259: return $datatoken;
4260: }
4261:
4262: =pod
4263:
4264: =item * load_tmp_file($r)
4265:
4266: Load uploaded file from tmp, $r should be the HTTP Request object,
4267: needs $env{'form.datatoken'},
4268: sets $env{'form.upfile'} to the contents of the file
4269:
4270: =cut
4271:
4272: sub load_tmp_file {
4273: my $r=shift;
4274: my @studentdata=();
4275: {
4276: my $studentfile = $r->dir_config('lonDaemons').
4277: '/tmp/'.$env{'form.datatoken'}.'.tmp';
4278: if ( open(my $fh,"<$studentfile") ) {
4279: @studentdata=<$fh>;
4280: close($fh);
4281: }
4282: }
4283: $env{'form.upfile'}=join('',@studentdata);
4284: }
4285:
4286: =pod
4287:
4288: =item * upfile_record_sep()
4289:
4290: Separate uploaded file into records
4291: returns array of records,
4292: needs $env{'form.upfile'} and $env{'form.upfiletype'}
4293:
4294: =cut
4295:
4296: sub upfile_record_sep {
4297: if ($env{'form.upfiletype'} eq 'xml') {
4298: } else {
4299: my @records;
4300: foreach my $line (split(/\n/,$env{'form.upfile'})) {
4301: if ($line=~/^\s*$/) { next; }
4302: push(@records,$line);
4303: }
4304: return @records;
4305: }
4306: }
4307:
4308: =pod
4309:
4310: =item * record_sep($record)
4311:
4312: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
4313:
4314: =cut
4315:
4316: sub takeleft {
4317: my $index=shift;
4318: return substr('0000'.$index,-4,4);
4319: }
4320:
4321: sub record_sep {
4322: my $record=shift;
4323: my %components=();
4324: if ($env{'form.upfiletype'} eq 'xml') {
4325: } elsif ($env{'form.upfiletype'} eq 'space') {
4326: my $i=0;
4327: foreach my $field (split(/\s+/,$record)) {
4328: $field=~s/^(\"|\')//;
4329: $field=~s/(\"|\')$//;
4330: $components{&takeleft($i)}=$field;
4331: $i++;
4332: }
4333: } elsif ($env{'form.upfiletype'} eq 'tab') {
4334: my $i=0;
4335: foreach my $field (split(/\t/,$record)) {
4336: $field=~s/^(\"|\')//;
4337: $field=~s/(\"|\')$//;
4338: $components{&takeleft($i)}=$field;
4339: $i++;
4340: }
4341: } else {
4342: my @allfields=split(/\,/,$record);
4343: my $i=0;
4344: my $j;
4345: for ($j=0;$j<=$#allfields;$j++) {
4346: my $field=$allfields[$j];
4347: if ($field=~/^\s*(\"|\')/) {
4348: my $delimiter=$1;
4349: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
4350: $j++;
4351: $field.=','.$allfields[$j];
4352: }
4353: $field=~s/^\s*$delimiter//;
4354: $field=~s/$delimiter\s*$//;
4355: }
4356: $components{&takeleft($i)}=$field;
4357: $i++;
4358: }
4359: }
4360: return %components;
4361: }
4362:
4363: ######################################################
4364: ######################################################
4365:
4366: =pod
4367:
4368: =item * upfile_select_html()
4369:
4370: Return HTML code to select a file from the users machine and specify
4371: the file type.
4372:
4373: =cut
4374:
4375: ######################################################
4376: ######################################################
4377: sub upfile_select_html {
4378: my %Types = (
4379: csv => &mt('CSV (comma separated values, spreadsheet)'),
4380: space => &mt('Space separated'),
4381: tab => &mt('Tabulator separated'),
4382: # xml => &mt('HTML/XML'),
4383: );
4384: my $Str = '<input type="file" name="upfile" size="50" />'.
4385: '<br />Type: <select name="upfiletype">';
4386: foreach my $type (sort(keys(%Types))) {
4387: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
4388: }
4389: $Str .= "</select>\n";
4390: return $Str;
4391: }
4392:
4393: sub get_samples {
4394: my ($records,$toget) = @_;
4395: my @samples=({});
4396: my $got=0;
4397: foreach my $rec (@$records) {
4398: my %temp = &record_sep($rec);
4399: if (! grep(/\S/, values(%temp))) { next; }
4400: if (%temp) {
4401: $samples[$got]=\%temp;
4402: $got++;
4403: if ($got == $toget) { last; }
4404: }
4405: }
4406: return \@samples;
4407: }
4408:
4409: ######################################################
4410: ######################################################
4411:
4412: =pod
4413:
4414: =item * csv_print_samples($r,$records)
4415:
4416: Prints a table of sample values from each column uploaded $r is an
4417: Apache Request ref, $records is an arrayref from
4418: &Apache::loncommon::upfile_record_sep
4419:
4420: =cut
4421:
4422: ######################################################
4423: ######################################################
4424: sub csv_print_samples {
4425: my ($r,$records) = @_;
4426: my $samples = &get_samples($records,3);
4427:
4428: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
4429: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4430: $r->print('<th>'.&mt('Column [_1]',($sample+1)).'</th>'); }
4431: $r->print('</tr>');
4432: foreach my $hash (@$samples) {
4433: $r->print('<tr>');
4434: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4435: $r->print('<td>');
4436: if (defined($$hash{$sample})) { $r->print($$hash{$sample}); }
4437: $r->print('</td>');
4438: }
4439: $r->print('</tr>');
4440: }
4441: $r->print('</tr></table><br />'."\n");
4442: }
4443:
4444: ######################################################
4445: ######################################################
4446:
4447: =pod
4448:
4449: =item * csv_print_select_table($r,$records,$d)
4450:
4451: Prints a table to create associations between values and table columns.
4452:
4453: $r is an Apache Request ref,
4454: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4455: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
4456:
4457: =cut
4458:
4459: ######################################################
4460: ######################################################
4461: sub csv_print_select_table {
4462: my ($r,$records,$d) = @_;
4463: my $i=0;
4464: my $samples = &get_samples($records,1);
4465: $r->print(&mt('Associate columns with student attributes.')."\n".
4466: '<table border="2"><tr>'.
4467: '<th>'.&mt('Attribute').'</th>'.
4468: '<th>'.&mt('Column').'</th></tr>'."\n");
4469: foreach my $array_ref (@$d) {
4470: my ($value,$display,$defaultcol)=@{ $array_ref };
4471: $r->print('<tr><td>'.$display.'</td>');
4472:
4473: $r->print('<td><select name=f'.$i.
4474: ' onchange="javascript:flip(this.form,'.$i.');">');
4475: $r->print('<option value="none"></option>');
4476: foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
4477: $r->print('<option value="'.$sample.'"'.
4478: ($sample eq $defaultcol ? ' selected="selected" ' : '').
4479: '>Column '.($sample+1).'</option>');
4480: }
4481: $r->print('</select></td></tr>'."\n");
4482: $i++;
4483: }
4484: $i--;
4485: return $i;
4486: }
4487:
4488: ######################################################
4489: ######################################################
4490:
4491: =pod
4492:
4493: =item * csv_samples_select_table($r,$records,$d)
4494:
4495: Prints a table of sample values from the upload and can make associate samples to internal names.
4496:
4497: $r is an Apache Request ref,
4498: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4499: $d is an array of 2 element arrays (internal name, displayed name)
4500:
4501: =cut
4502:
4503: ######################################################
4504: ######################################################
4505: sub csv_samples_select_table {
4506: my ($r,$records,$d) = @_;
4507: my $i=0;
4508: #
4509: my $samples = &get_samples($records,3);
4510: $r->print('<table border=2><tr><th>'.
4511: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
4512:
4513: foreach my $key (sort(keys(%{ $samples->[0] }))) {
4514: $r->print('<tr><td><select name="f'.$i.'"'.
4515: ' onchange="javascript:flip(this.form,'.$i.');">');
4516: foreach my $option (@$d) {
4517: my ($value,$display,$defaultcol)=@{ $option };
4518: $r->print('<option value="'.$value.'"'.
4519: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
4520: $display.'</option>');
4521: }
4522: $r->print('</select></td><td>');
4523: foreach my $line (0..2) {
4524: if (defined($samples->[$line]{$key})) {
4525: $r->print($samples->[$line]{$key}."<br />\n");
4526: }
4527: }
4528: $r->print('</td></tr>');
4529: $i++;
4530: }
4531: $i--;
4532: return($i);
4533: }
4534:
4535: ######################################################
4536: ######################################################
4537:
4538: =pod
4539:
4540: =item clean_excel_name($name)
4541:
4542: Returns a replacement for $name which does not contain any illegal characters.
4543:
4544: =cut
4545:
4546: ######################################################
4547: ######################################################
4548: sub clean_excel_name {
4549: my ($name) = @_;
4550: $name =~ s/[:\*\?\/\\]//g;
4551: if (length($name) > 31) {
4552: $name = substr($name,0,31);
4553: }
4554: return $name;
4555: }
4556:
4557: =pod
4558:
4559: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
4560:
4561: Returns either 1 or undef
4562:
4563: 1 if the part is to be hidden, undef if it is to be shown
4564:
4565: Arguments are:
4566:
4567: $id the id of the part to be checked
4568: $symb, optional the symb of the resource to check
4569: $udom, optional the domain of the user to check for
4570: $uname, optional the username of the user to check for
4571:
4572: =cut
4573:
4574: sub check_if_partid_hidden {
4575: my ($id,$symb,$udom,$uname) = @_;
4576: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
4577: $symb,$udom,$uname);
4578: my $truth=1;
4579: #if the string starts with !, then the list is the list to show not hide
4580: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
4581: my @hiddenlist=split(/,/,$hiddenparts);
4582: foreach my $checkid (@hiddenlist) {
4583: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
4584: }
4585: return !$truth;
4586: }
4587:
4588:
4589: ############################################################
4590: ############################################################
4591:
4592: =pod
4593:
4594: =back
4595:
4596: =head1 cgi-bin script and graphing routines
4597:
4598: =over 4
4599:
4600: =item get_cgi_id
4601:
4602: Inputs: none
4603:
4604: Returns an id which can be used to pass environment variables
4605: to various cgi-bin scripts. These environment variables will
4606: be removed from the users environment after a given time by
4607: the routine &Apache::lonnet::transfer_profile_to_env.
4608:
4609: =cut
4610:
4611: ############################################################
4612: ############################################################
4613: my $uniq=0;
4614: sub get_cgi_id {
4615: $uniq=($uniq+1)%100000;
4616: return (time.'_'.$$.'_'.$uniq);
4617: }
4618:
4619: ############################################################
4620: ############################################################
4621:
4622: =pod
4623:
4624: =item DrawBarGraph
4625:
4626: Facilitates the plotting of data in a (stacked) bar graph.
4627: Puts plot definition data into the users environment in order for
4628: graph.png to plot it. Returns an <img> tag for the plot.
4629: The bars on the plot are labeled '1','2',...,'n'.
4630:
4631: Inputs:
4632:
4633: =over 4
4634:
4635: =item $Title: string, the title of the plot
4636:
4637: =item $xlabel: string, text describing the X-axis of the plot
4638:
4639: =item $ylabel: string, text describing the Y-axis of the plot
4640:
4641: =item $Max: scalar, the maximum Y value to use in the plot
4642: If $Max is < any data point, the graph will not be rendered.
4643:
4644: =item $colors: array ref holding the colors to be used for the data sets when
4645: they are plotted. If undefined, default values will be used.
4646:
4647: =item $labels: array ref holding the labels to use on the x-axis for the bars.
4648:
4649: =item @Values: An array of array references. Each array reference holds data
4650: to be plotted in a stacked bar chart.
4651:
4652: =item If the final element of @Values is a hash reference the key/value
4653: pairs will be added to the graph definition.
4654:
4655: =back
4656:
4657: Returns:
4658:
4659: An <img> tag which references graph.png and the appropriate identifying
4660: information for the plot.
4661:
4662: =cut
4663:
4664: ############################################################
4665: ############################################################
4666: sub DrawBarGraph {
4667: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
4668: #
4669: if (! defined($colors)) {
4670: $colors = ['#33ff00',
4671: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
4672: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
4673: ];
4674: }
4675: my $extra_settings = {};
4676: if (ref($Values[-1]) eq 'HASH') {
4677: $extra_settings = pop(@Values);
4678: }
4679: #
4680: my $identifier = &get_cgi_id();
4681: my $id = 'cgi.'.$identifier;
4682: if (! @Values || ref($Values[0]) ne 'ARRAY') {
4683: return '';
4684: }
4685: #
4686: my @Labels;
4687: if (defined($labels)) {
4688: @Labels = @$labels;
4689: } else {
4690: for (my $i=0;$i<@{$Values[0]};$i++) {
4691: push (@Labels,$i+1);
4692: }
4693: }
4694: #
4695: my $NumBars = scalar(@{$Values[0]});
4696: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
4697: my %ValuesHash;
4698: my $NumSets=1;
4699: foreach my $array (@Values) {
4700: next if (! ref($array));
4701: $ValuesHash{$id.'.data.'.$NumSets++} =
4702: join(',',@$array);
4703: }
4704: #
4705: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
4706: if ($NumBars < 3) {
4707: $width = 120+$NumBars*32;
4708: $xskip = 1;
4709: $bar_width = 30;
4710: } elsif ($NumBars < 5) {
4711: $width = 120+$NumBars*20;
4712: $xskip = 1;
4713: $bar_width = 20;
4714: } elsif ($NumBars < 10) {
4715: $width = 120+$NumBars*15;
4716: $xskip = 1;
4717: $bar_width = 15;
4718: } elsif ($NumBars <= 25) {
4719: $width = 120+$NumBars*11;
4720: $xskip = 5;
4721: $bar_width = 8;
4722: } elsif ($NumBars <= 50) {
4723: $width = 120+$NumBars*8;
4724: $xskip = 5;
4725: $bar_width = 4;
4726: } else {
4727: $width = 120+$NumBars*8;
4728: $xskip = 5;
4729: $bar_width = 4;
4730: }
4731: #
4732: $Max = 1 if ($Max < 1);
4733: if ( int($Max) < $Max ) {
4734: $Max++;
4735: $Max = int($Max);
4736: }
4737: $Title = '' if (! defined($Title));
4738: $xlabel = '' if (! defined($xlabel));
4739: $ylabel = '' if (! defined($ylabel));
4740: $ValuesHash{$id.'.title'} = &escape($Title);
4741: $ValuesHash{$id.'.xlabel'} = &escape($xlabel);
4742: $ValuesHash{$id.'.ylabel'} = &escape($ylabel);
4743: $ValuesHash{$id.'.y_max_value'} = $Max;
4744: $ValuesHash{$id.'.NumBars'} = $NumBars;
4745: $ValuesHash{$id.'.NumSets'} = $NumSets;
4746: $ValuesHash{$id.'.PlotType'} = 'bar';
4747: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4748: $ValuesHash{$id.'.height'} = $height;
4749: $ValuesHash{$id.'.width'} = $width;
4750: $ValuesHash{$id.'.xskip'} = $xskip;
4751: $ValuesHash{$id.'.bar_width'} = $bar_width;
4752: $ValuesHash{$id.'.labels'} = join(',',@Labels);
4753: #
4754: # Deal with other parameters
4755: while (my ($key,$value) = each(%$extra_settings)) {
4756: $ValuesHash{$id.'.'.$key} = $value;
4757: }
4758: #
4759: &Apache::lonnet::appenv(%ValuesHash);
4760: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4761: }
4762:
4763: ############################################################
4764: ############################################################
4765:
4766: =pod
4767:
4768: =item DrawXYGraph
4769:
4770: Facilitates the plotting of data in an XY graph.
4771: Puts plot definition data into the users environment in order for
4772: graph.png to plot it. Returns an <img> tag for the plot.
4773:
4774: Inputs:
4775:
4776: =over 4
4777:
4778: =item $Title: string, the title of the plot
4779:
4780: =item $xlabel: string, text describing the X-axis of the plot
4781:
4782: =item $ylabel: string, text describing the Y-axis of the plot
4783:
4784: =item $Max: scalar, the maximum Y value to use in the plot
4785: If $Max is < any data point, the graph will not be rendered.
4786:
4787: =item $colors: Array ref containing the hex color codes for the data to be
4788: plotted in. If undefined, default values will be used.
4789:
4790: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4791:
4792: =item $Ydata: Array ref containing Array refs.
4793: Each of the contained arrays will be plotted as a separate curve.
4794:
4795: =item %Values: hash indicating or overriding any default values which are
4796: passed to graph.png.
4797: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4798:
4799: =back
4800:
4801: Returns:
4802:
4803: An <img> tag which references graph.png and the appropriate identifying
4804: information for the plot.
4805:
4806: =cut
4807:
4808: ############################################################
4809: ############################################################
4810: sub DrawXYGraph {
4811: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
4812: #
4813: # Create the identifier for the graph
4814: my $identifier = &get_cgi_id();
4815: my $id = 'cgi.'.$identifier;
4816: #
4817: $Title = '' if (! defined($Title));
4818: $xlabel = '' if (! defined($xlabel));
4819: $ylabel = '' if (! defined($ylabel));
4820: my %ValuesHash =
4821: (
4822: $id.'.title' => &escape($Title),
4823: $id.'.xlabel' => &escape($xlabel),
4824: $id.'.ylabel' => &escape($ylabel),
4825: $id.'.y_max_value'=> $Max,
4826: $id.'.labels' => join(',',@$Xlabels),
4827: $id.'.PlotType' => 'XY',
4828: );
4829: #
4830: if (defined($colors) && ref($colors) eq 'ARRAY') {
4831: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4832: }
4833: #
4834: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
4835: return '';
4836: }
4837: my $NumSets=1;
4838: foreach my $array (@{$Ydata}){
4839: next if (! ref($array));
4840: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4841: }
4842: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
4843: #
4844: # Deal with other parameters
4845: while (my ($key,$value) = each(%Values)) {
4846: $ValuesHash{$id.'.'.$key} = $value;
4847: }
4848: #
4849: &Apache::lonnet::appenv(%ValuesHash);
4850: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4851: }
4852:
4853: ############################################################
4854: ############################################################
4855:
4856: =pod
4857:
4858: =item DrawXYYGraph
4859:
4860: Facilitates the plotting of data in an XY graph with two Y axes.
4861: Puts plot definition data into the users environment in order for
4862: graph.png to plot it. Returns an <img> tag for the plot.
4863:
4864: Inputs:
4865:
4866: =over 4
4867:
4868: =item $Title: string, the title of the plot
4869:
4870: =item $xlabel: string, text describing the X-axis of the plot
4871:
4872: =item $ylabel: string, text describing the Y-axis of the plot
4873:
4874: =item $colors: Array ref containing the hex color codes for the data to be
4875: plotted in. If undefined, default values will be used.
4876:
4877: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4878:
4879: =item $Ydata1: The first data set
4880:
4881: =item $Min1: The minimum value of the left Y-axis
4882:
4883: =item $Max1: The maximum value of the left Y-axis
4884:
4885: =item $Ydata2: The second data set
4886:
4887: =item $Min2: The minimum value of the right Y-axis
4888:
4889: =item $Max2: The maximum value of the left Y-axis
4890:
4891: =item %Values: hash indicating or overriding any default values which are
4892: passed to graph.png.
4893: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4894:
4895: =back
4896:
4897: Returns:
4898:
4899: An <img> tag which references graph.png and the appropriate identifying
4900: information for the plot.
4901:
4902: =cut
4903:
4904: ############################################################
4905: ############################################################
4906: sub DrawXYYGraph {
4907: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4908: $Ydata2,$Min2,$Max2,%Values)=@_;
4909: #
4910: # Create the identifier for the graph
4911: my $identifier = &get_cgi_id();
4912: my $id = 'cgi.'.$identifier;
4913: #
4914: $Title = '' if (! defined($Title));
4915: $xlabel = '' if (! defined($xlabel));
4916: $ylabel = '' if (! defined($ylabel));
4917: my %ValuesHash =
4918: (
4919: $id.'.title' => &escape($Title),
4920: $id.'.xlabel' => &escape($xlabel),
4921: $id.'.ylabel' => &escape($ylabel),
4922: $id.'.labels' => join(',',@$Xlabels),
4923: $id.'.PlotType' => 'XY',
4924: $id.'.NumSets' => 2,
4925: $id.'.two_axes' => 1,
4926: $id.'.y1_max_value' => $Max1,
4927: $id.'.y1_min_value' => $Min1,
4928: $id.'.y2_max_value' => $Max2,
4929: $id.'.y2_min_value' => $Min2,
4930: );
4931: #
4932: if (defined($colors) && ref($colors) eq 'ARRAY') {
4933: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4934: }
4935: #
4936: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4937: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
4938: return '';
4939: }
4940: my $NumSets=1;
4941: foreach my $array ($Ydata1,$Ydata2){
4942: next if (! ref($array));
4943: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4944: }
4945: #
4946: # Deal with other parameters
4947: while (my ($key,$value) = each(%Values)) {
4948: $ValuesHash{$id.'.'.$key} = $value;
4949: }
4950: #
4951: &Apache::lonnet::appenv(%ValuesHash);
4952: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4953: }
4954:
4955: ############################################################
4956: ############################################################
4957:
4958: =pod
4959:
4960: =back
4961:
4962: =head1 Statistics helper routines?
4963:
4964: Bad place for them but what the hell.
4965:
4966: =over 4
4967:
4968: =item &chartlink
4969:
4970: Returns a link to the chart for a specific student.
4971:
4972: Inputs:
4973:
4974: =over 4
4975:
4976: =item $linktext: The text of the link
4977:
4978: =item $sname: The students username
4979:
4980: =item $sdomain: The students domain
4981:
4982: =back
4983:
4984: =back
4985:
4986: =cut
4987:
4988: ############################################################
4989: ############################################################
4990: sub chartlink {
4991: my ($linktext, $sname, $sdomain) = @_;
4992: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
4993: '&SelectedStudent='.&escape($sname.':'.$sdomain).
4994: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
4995: '">'.$linktext.'</a>';
4996: }
4997:
4998: #######################################################
4999: #######################################################
5000:
5001: =pod
5002:
5003: =head1 Course Environment Routines
5004:
5005: =over 4
5006:
5007: =item &restore_course_settings
5008:
5009: =item &store_course_settings
5010:
5011: Restores/Store indicated form parameters from the course environment.
5012: Will not overwrite existing values of the form parameters.
5013:
5014: Inputs:
5015: a scalar describing the data (e.g. 'chart', 'problem_analysis')
5016:
5017: a hash ref describing the data to be stored. For example:
5018:
5019: %Save_Parameters = ('Status' => 'scalar',
5020: 'chartoutputmode' => 'scalar',
5021: 'chartoutputdata' => 'scalar',
5022: 'Section' => 'array',
5023: 'StudentData' => 'array',
5024: 'Maps' => 'array');
5025:
5026: Returns: both routines return nothing
5027:
5028: =cut
5029:
5030: #######################################################
5031: #######################################################
5032: sub store_course_settings {
5033: # save to the environment
5034: # appenv the same items, just to be safe
5035: my $courseid = $env{'request.course.id'};
5036: my $udom = $env{'user.domain'};
5037: my $uname = $env{'user.name'};
5038: my ($prefix,$Settings) = @_;
5039: my %SaveHash;
5040: my %AppHash;
5041: while (my ($setting,$type) = each(%$Settings)) {
5042: my $basename = join('.','internal',$courseid,$prefix,$setting);
5043: my $envname = 'environment.'.$basename;
5044: if (exists($env{'form.'.$setting})) {
5045: # Save this value away
5046: if ($type eq 'scalar' &&
5047: (! exists($env{$envname}) ||
5048: $env{$envname} ne $env{'form.'.$setting})) {
5049: $SaveHash{$basename} = $env{'form.'.$setting};
5050: $AppHash{$envname} = $env{'form.'.$setting};
5051: } elsif ($type eq 'array') {
5052: my $stored_form;
5053: if (ref($env{'form.'.$setting})) {
5054: $stored_form = join(',',
5055: map {
5056: &escape($_);
5057: } sort(@{$env{'form.'.$setting}}));
5058: } else {
5059: $stored_form =
5060: &escape($env{'form.'.$setting});
5061: }
5062: # Determine if the array contents are the same.
5063: if ($stored_form ne $env{$envname}) {
5064: $SaveHash{$basename} = $stored_form;
5065: $AppHash{$envname} = $stored_form;
5066: }
5067: }
5068: }
5069: }
5070: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
5071: $udom,$uname);
5072: if ($put_result !~ /^(ok|delayed)/) {
5073: &Apache::lonnet::logthis('unable to save form parameters, '.
5074: 'got error:'.$put_result);
5075: }
5076: # Make sure these settings stick around in this session, too
5077: &Apache::lonnet::appenv(%AppHash);
5078: return;
5079: }
5080:
5081: sub restore_course_settings {
5082: my $courseid = $env{'request.course.id'};
5083: my ($prefix,$Settings) = @_;
5084: while (my ($setting,$type) = each(%$Settings)) {
5085: next if (exists($env{'form.'.$setting}));
5086: my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
5087: '.'.$setting;
5088: if (exists($env{$envname})) {
5089: if ($type eq 'scalar') {
5090: $env{'form.'.$setting} = $env{$envname};
5091: } elsif ($type eq 'array') {
5092: $env{'form.'.$setting} = [
5093: map {
5094: &unescape($_);
5095: } split(',',$env{$envname})
5096: ];
5097: }
5098: }
5099: }
5100: }
5101:
5102: ############################################################
5103: ############################################################
5104:
5105: sub propath {
5106: my ($udom,$uname)=@_;
5107: $udom=~s/\W//g;
5108: $uname=~s/\W//g;
5109: my $subdir=$uname.'__';
5110: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
5111: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
5112: return $proname;
5113: }
5114:
5115: sub icon {
5116: my ($file)=@_;
5117: my $curfext = (split(/\./,$file))[-1];
5118: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
5119: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
5120: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
5121: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
5122: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
5123: $curfext.".gif") {
5124: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
5125: $curfext.".gif";
5126: }
5127: }
5128: return &lonhttpdurl($iconname);
5129: }
5130:
5131: sub lonhttpdurl {
5132: my ($url)=@_;
5133: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
5134: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
5135: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
5136: }
5137:
5138: sub connection_aborted {
5139: my ($r)=@_;
5140: $r->print(" ");$r->rflush();
5141: my $c = $r->connection;
5142: return $c->aborted();
5143: }
5144:
5145: # Escapes strings that may have embedded 's that will be put into
5146: # strings as 'strings'.
5147: sub escape_single {
5148: my ($input) = @_;
5149: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
5150: $input =~ s/\'/\\\'/g; # Esacpe the 's....
5151: return $input;
5152: }
5153:
5154: # Same as escape_single, but escape's "'s This
5155: # can be used for "strings"
5156: sub escape_double {
5157: my ($input) = @_;
5158: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
5159: $input =~ s/\"/\\\"/g; # Esacpe the "s....
5160: return $input;
5161: }
5162:
5163: # Escapes the last element of a full URL.
5164: sub escape_url {
5165: my ($url) = @_;
5166: my @urlslices = split(/\//, $url,-1);
5167: my $lastitem = &escape(pop(@urlslices));
5168: return join('/',@urlslices).'/'.$lastitem;
5169: }
5170: =pod
5171:
5172: =back
5173:
5174: =cut
5175:
5176: 1;
5177: __END__;
5178:
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