1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.243 2004/12/20 19:57:14 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet();
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::Constants qw(:common :http :methods);
62: use Apache::lonmenu();
63: use Apache::lonlocal;
64: use HTML::Entities;
65:
66: my $readit;
67:
68: ##
69: ## Global Variables
70: ##
71:
72: # ----------------------------------------------- Filetypes/Languages/Copyright
73: my %language;
74: my %supported_language;
75: my %cprtag;
76: my %scprtag;
77: my %fe; my %fd;
78: my %category_extensions;
79:
80: # ---------------------------------------------- Designs
81:
82: my %designhash;
83:
84: # ---------------------------------------------- Thesaurus variables
85: #
86: # %Keywords:
87: # A hash used by &keyword to determine if a word is considered a keyword.
88: # $thesaurus_db_file
89: # Scalar containing the full path to the thesaurus database.
90:
91: my %Keywords;
92: my $thesaurus_db_file;
93:
94: #
95: # Initialize values from language.tab, copyright.tab, filetypes.tab,
96: # thesaurus.tab, and filecategories.tab.
97: #
98: BEGIN {
99: # Variable initialization
100: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
101: #
102: unless ($readit) {
103: # ------------------------------------------------------------------- languages
104: {
105: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
106: '/language.tab';
107: if ( open(my $fh,"<$langtabfile") ) {
108: while (<$fh>) {
109: next if /^\#/;
110: chomp;
111: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
112: $language{$key}=$val.' - '.$enc;
113: if ($sup) {
114: $supported_language{$key}=$sup;
115: }
116: }
117: close($fh);
118: }
119: }
120: # ------------------------------------------------------------------ copyrights
121: {
122: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
123: '/copyright.tab';
124: if ( open (my $fh,"<$copyrightfile") ) {
125: while (<$fh>) {
126: next if /^\#/;
127: chomp;
128: my ($key,$val)=(split(/\s+/,$_,2));
129: $cprtag{$key}=$val;
130: }
131: close($fh);
132: }
133: }
134: # ------------------------------------------------------------------ source copyrights
135: {
136: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
137: '/source_copyright.tab';
138: if ( open (my $fh,"<$sourcecopyrightfile") ) {
139: while (<$fh>) {
140: next if /^\#/;
141: chomp;
142: my ($key,$val)=(split(/\s+/,$_,2));
143: $scprtag{$key}=$val;
144: }
145: close($fh);
146: }
147: }
148:
149: # -------------------------------------------------------------- domain designs
150:
151: my $filename;
152: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
153: opendir(DIR,$designdir);
154: while ($filename=readdir(DIR)) {
155: my ($domain)=($filename=~/^(\w+)\./);
156: {
157: my $designfile = $designdir.'/'.$filename;
158: if ( open (my $fh,"<$designfile") ) {
159: while (<$fh>) {
160: next if /^\#/;
161: chomp;
162: my ($key,$val)=(split(/\=/,$_));
163: if ($val) { $designhash{$domain.'.'.$key}=$val; }
164: }
165: close($fh);
166: }
167: }
168:
169: }
170: closedir(DIR);
171:
172:
173: # ------------------------------------------------------------- file categories
174: {
175: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
176: '/filecategories.tab';
177: if ( open (my $fh,"<$categoryfile") ) {
178: while (<$fh>) {
179: next if /^\#/;
180: chomp;
181: my ($extension,$category)=(split(/\s+/,$_,2));
182: push @{$category_extensions{lc($category)}},$extension;
183: }
184: close($fh);
185: }
186:
187: }
188: # ------------------------------------------------------------------ file types
189: {
190: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
191: '/filetypes.tab';
192: if ( open (my $fh,"<$typesfile") ) {
193: while (<$fh>) {
194: next if (/^\#/);
195: chomp;
196: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
197: if ($descr ne '') {
198: $fe{$ending}=lc($emb);
199: $fd{$ending}=$descr;
200: }
201: }
202: close($fh);
203: }
204: }
205: &Apache::lonnet::logthis(
206: "<font color=yellow>INFO: Read file types</font>");
207: $readit=1;
208: } # end of unless($readit)
209:
210: }
211:
212: ###############################################################
213: ## HTML and Javascript Helper Functions ##
214: ###############################################################
215:
216: =pod
217:
218: =head1 HTML and Javascript Functions
219:
220: =over 4
221:
222: =item * browser_and_searcher_javascript ()
223:
224: X<browsing, javascript>X<searching, javascript>Returns a string
225: containing javascript with two functions, C<openbrowser> and
226: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
227: tags.
228:
229: =item * openbrowser(formname,elementname,only,omit) [javascript]
230:
231: inputs: formname, elementname, only, omit
232:
233: formname and elementname indicate the name of the html form and name of
234: the element that the results of the browsing selection are to be placed in.
235:
236: Specifying 'only' will restrict the browser to displaying only files
237: with the given extension. Can be a comma separated list.
238:
239: Specifying 'omit' will restrict the browser to NOT displaying files
240: with the given extension. Can be a comma separated list.
241:
242: =item * opensearcher(formname, elementname) [javascript]
243:
244: Inputs: formname, elementname
245:
246: formname and elementname specify the name of the html form and the name
247: of the element the selection from the search results will be placed in.
248:
249: =cut
250:
251: sub browser_and_searcher_javascript {
252: my ($mode)=@_;
253: if (!defined($mode)) { $mode='edit'; }
254: my $resurl=&lastresurl();
255: return <<END;
256: // <!-- BEGIN LON-CAPA Internal
257: var editbrowser = null;
258: function openbrowser(formname,elementname,only,omit,titleelement) {
259: var url = '$resurl/?';
260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
264: url += 'mode=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: } else {
269: url += 'only=&';
270: }
271: if (omit != null) {
272: url += 'omit=' + omit + '&';
273: } else {
274: url += 'omit=&';
275: }
276: if (titleelement != null) {
277: url += 'titleelement=' + titleelement + '&';
278: } else {
279: url += 'titleelement=&';
280: }
281: url += 'element=' + elementname + '';
282: var title = 'Browser';
283: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
284: options += ',width=700,height=600';
285: editbrowser = open(url,title,options,'1');
286: editbrowser.focus();
287: }
288: var editsearcher;
289: function opensearcher(formname,elementname,titleelement) {
290: var url = '/adm/searchcat?';
291: if (editsearcher == null) {
292: url += 'launch=1&';
293: }
294: url += 'catalogmode=interactive&';
295: url += 'mode=$mode&';
296: url += 'form=' + formname + '&';
297: if (titleelement != null) {
298: url += 'titleelement=' + titleelement + '&';
299: } else {
300: url += 'titleelement=&';
301: }
302: url += 'element=' + elementname + '';
303: var title = 'Search';
304: var options = 'scrollbars=1,resizable=1,menubar=0';
305: options += ',width=700,height=600';
306: editsearcher = open(url,title,options,'1');
307: editsearcher.focus();
308: }
309: // END LON-CAPA Internal -->
310: END
311: }
312:
313: sub lastresurl {
314: if ($ENV{'environment.lastresurl'}) {
315: return $ENV{'environment.lastresurl'}
316: } else {
317: return '/res';
318: }
319: }
320:
321: sub storeresurl {
322: my $resurl=&Apache::lonnet::clutter(shift);
323: unless ($resurl=~/^\/res/) { return 0; }
324: $resurl=~s/\/$//;
325: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
326: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
327: return 1;
328: }
329:
330: sub studentbrowser_javascript {
331: unless (
332: (($ENV{'request.course.id'}) &&
333: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
334: || ($ENV{'request.role'}=~/^(au|dc|su)/)
335: ) { return ''; }
336: return (<<'ENDSTDBRW');
337: <script type="text/javascript" language="Javascript" >
338: var stdeditbrowser;
339: function openstdbrowser(formname,uname,udom,roleflag) {
340: var url = '/adm/pickstudent?';
341: var filter;
342: eval('filter=document.'+formname+'.'+uname+'.value;');
343: if (filter != null) {
344: if (filter != '') {
345: url += 'filter='+filter+'&';
346: }
347: }
348: url += 'form=' + formname + '&unameelement='+uname+
349: '&udomelement='+udom;
350: if (roleflag) { url+="&roles=1"; }
351: var title = 'Student_Browser';
352: var options = 'scrollbars=1,resizable=1,menubar=0';
353: options += ',width=700,height=600';
354: stdeditbrowser = open(url,title,options,'1');
355: stdeditbrowser.focus();
356: }
357: </script>
358: ENDSTDBRW
359: }
360:
361: sub selectstudent_link {
362: my ($form,$unameele,$udomele)=@_;
363: if ($ENV{'request.course.id'}) {
364: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
365: return '';
366: }
367: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
368: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
369: }
370: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
371: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
372: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
373: }
374: return '';
375: }
376:
377: sub coursebrowser_javascript {
378: my ($domainfilter)=@_;
379: return (<<ENDSTDBRW);
380: <script type="text/javascript" language="Javascript" >
381: var stdeditbrowser;
382: function opencrsbrowser(formname,uname,udom,desc,extra_element) {
383: var url = '/adm/pickcourse?';
384: var filter;
385: if (filter != null) {
386: if (filter != '') {
387: url += 'filter='+filter+'&';
388: }
389: }
390: var domainfilter='$domainfilter';
391: if (domainfilter != null) {
392: if (domainfilter != '') {
393: url += 'domainfilter='+domainfilter+'&';
394: }
395: }
396: url += 'form=' + formname + '&cnumelement='+uname+
397: '&cdomelement='+udom+
398: '&cnameelement='+desc;
399: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
400: url += '&roleelement='+extra_element;
401: if (domainfilter == null || domainfilter == '') {
402: url += '&domainfilter='+extra_element;
403: }
404: }
405: var title = 'Course_Browser';
406: var options = 'scrollbars=1,resizable=1,menubar=0';
407: options += ',width=700,height=600';
408: stdeditbrowser = open(url,title,options,'1');
409: stdeditbrowser.focus();
410: }
411: </script>
412: ENDSTDBRW
413: }
414:
415: sub selectcourse_link {
416: my ($form,$unameele,$udomele,$desc,$extra_element)=@_;
417: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
418: '","'.$udomele.'","'.$desc.'","'.$extra_element.'");'."'>".&mt('Select Course')."</a>";
419: }
420:
421: =pod
422:
423: =item * linked_select_forms(...)
424:
425: linked_select_forms returns a string containing a <script></script> block
426: and html for two <select> menus. The select menus will be linked in that
427: changing the value of the first menu will result in new values being placed
428: in the second menu. The values in the select menu will appear in alphabetical
429: order.
430:
431: linked_select_forms takes the following ordered inputs:
432:
433: =over 4
434:
435: =item * $formname, the name of the <form> tag
436:
437: =item * $middletext, the text which appears between the <select> tags
438:
439: =item * $firstdefault, the default value for the first menu
440:
441: =item * $firstselectname, the name of the first <select> tag
442:
443: =item * $secondselectname, the name of the second <select> tag
444:
445: =item * $hashref, a reference to a hash containing the data for the menus.
446:
447: =back
448:
449: Below is an example of such a hash. Only the 'text', 'default', and
450: 'select2' keys must appear as stated. keys(%menu) are the possible
451: values for the first select menu. The text that coincides with the
452: first menu value is given in $menu{$choice1}->{'text'}. The values
453: and text for the second menu are given in the hash pointed to by
454: $menu{$choice1}->{'select2'}.
455:
456: my %menu = ( A1 => { text =>"Choice A1" ,
457: default => "B3",
458: select2 => {
459: B1 => "Choice B1",
460: B2 => "Choice B2",
461: B3 => "Choice B3",
462: B4 => "Choice B4"
463: }
464: },
465: A2 => { text =>"Choice A2" ,
466: default => "C2",
467: select2 => {
468: C1 => "Choice C1",
469: C2 => "Choice C2",
470: C3 => "Choice C3"
471: }
472: },
473: A3 => { text =>"Choice A3" ,
474: default => "D6",
475: select2 => {
476: D1 => "Choice D1",
477: D2 => "Choice D2",
478: D3 => "Choice D3",
479: D4 => "Choice D4",
480: D5 => "Choice D5",
481: D6 => "Choice D6",
482: D7 => "Choice D7"
483: }
484: }
485: );
486:
487: =cut
488:
489: sub linked_select_forms {
490: my ($formname,
491: $middletext,
492: $firstdefault,
493: $firstselectname,
494: $secondselectname,
495: $hashref
496: ) = @_;
497: my $second = "document.$formname.$secondselectname";
498: my $first = "document.$formname.$firstselectname";
499: # output the javascript to do the changing
500: my $result = '';
501: $result.="<script type=\"text/javascript\">\n";
502: $result.="var select2data = new Object();\n";
503: $" = '","';
504: my $debug = '';
505: foreach my $s1 (sort(keys(%$hashref))) {
506: $result.="select2data.d_$s1 = new Object();\n";
507: $result.="select2data.d_$s1.def = new String('".
508: $hashref->{$s1}->{'default'}."');\n";
509: $result.="select2data.d_$s1.values = new Array(";
510: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
511: $result.="\"@s2values\");\n";
512: $result.="select2data.d_$s1.texts = new Array(";
513: my @s2texts;
514: foreach my $value (@s2values) {
515: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
516: }
517: $result.="\"@s2texts\");\n";
518: }
519: $"=' ';
520: $result.= <<"END";
521:
522: function select1_changed() {
523: // Determine new choice
524: var newvalue = "d_" + $first.value;
525: // update select2
526: var values = select2data[newvalue].values;
527: var texts = select2data[newvalue].texts;
528: var select2def = select2data[newvalue].def;
529: var i;
530: // out with the old
531: for (i = 0; i < $second.options.length; i++) {
532: $second.options[i] = null;
533: }
534: // in with the nuclear
535: for (i=0;i<values.length; i++) {
536: $second.options[i] = new Option(values[i]);
537: $second.options[i].value = values[i];
538: $second.options[i].text = texts[i];
539: if (values[i] == select2def) {
540: $second.options[i].selected = true;
541: }
542: }
543: }
544: </script>
545: END
546: # output the initial values for the selection lists
547: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
548: foreach my $value (sort(keys(%$hashref))) {
549: $result.=" <option value=\"$value\" ";
550: $result.=" selected=\"true\" " if ($value eq $firstdefault);
551: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
552: }
553: $result .= "</select>\n";
554: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
555: $result .= $middletext;
556: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
557: my $seconddefault = $hashref->{$firstdefault}->{'default'};
558: foreach my $value (sort(keys(%select2))) {
559: $result.=" <option value=\"$value\" ";
560: $result.=" selected=\"true\" " if ($value eq $seconddefault);
561: $result.=">".&mt($select2{$value})."</option>\n";
562: }
563: $result .= "</select>\n";
564: # return $debug;
565: return $result;
566: } # end of sub linked_select_forms {
567:
568: =pod
569:
570: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
571:
572: Returns a string corresponding to an HTML link to the given help
573: $topic, where $topic corresponds to the name of a .tex file in
574: /home/httpd/html/adm/help/tex, with underscores replaced by
575: spaces.
576:
577: $text will optionally be linked to the same topic, allowing you to
578: link text in addition to the graphic. If you do not want to link
579: text, but wish to specify one of the later parameters, pass an
580: empty string.
581:
582: $stayOnPage is a value that will be interpreted as a boolean. If true,
583: the link will not open a new window. If false, the link will open
584: a new window using Javascript. (Default is false.)
585:
586: $width and $height are optional numerical parameters that will
587: override the width and height of the popped up window, which may
588: be useful for certain help topics with big pictures included.
589:
590: =cut
591:
592: sub help_open_topic {
593: my ($topic, $text, $stayOnPage, $width, $height) = @_;
594: $text = "" if (not defined $text);
595: $stayOnPage = 0 if (not defined $stayOnPage);
596: if ($ENV{'browser.interface'} eq 'textual' ||
597: $ENV{'environment.remote'} eq 'off' ) {
598: $stayOnPage=1;
599: }
600: $width = 350 if (not defined $width);
601: $height = 400 if (not defined $height);
602: my $filename = $topic;
603: $filename =~ s/ /_/g;
604:
605: my $template = "";
606: my $link;
607:
608: $topic=~s/\W/\_/g;
609:
610: if (!$stayOnPage)
611: {
612: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
613: }
614: else
615: {
616: $link = "/adm/help/${filename}.hlp";
617: }
618:
619: # Add the text
620: if ($text ne "")
621: {
622: $template .=
623: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
624: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
625: }
626:
627: # Add the graphic
628: my $title = &mt('Online Help');
629: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
630: $template .= <<"ENDTEMPLATE";
631: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
632: ENDTEMPLATE
633: if ($text ne '') { $template.='</td></tr></table>' };
634: return $template;
635:
636: }
637:
638: # This is a quicky function for Latex cheatsheet editing, since it
639: # appears in at least four places
640: sub helpLatexCheatsheet {
641: my $other = shift;
642: my $addOther = '';
643: if ($other) {
644: $addOther = Apache::loncommon::help_open_topic($other, shift,
645: undef, undef, 600) .
646: '</td><td>';
647: }
648: return '<table><tr><td>'.
649: $addOther .
650: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
651: undef,undef,600)
652: .'</td><td>'.
653: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
654: undef,undef,600)
655: .'</td></tr></table>';
656: }
657:
658: sub help_open_menu {
659: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
660: $text = "" if (not defined $text);
661: $stayOnPage = 0 if (not defined $stayOnPage);
662: if ($ENV{'browser.interface'} eq 'textual' ||
663: $ENV{'environment.remote'} eq 'off' ) {
664: $stayOnPage=1;
665: }
666: $width = 620 if (not defined $width);
667: $height = 600 if (not defined $height);
668: my $link='';
669: my $title = &mt('Get help');
670: my $origurl = $ENV{'REQUEST_URI'};
671: $origurl=~s|^/~|/priv/|;
672: my $timestamp = time;
673: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
674: $$_ = &Apache::lonnet::escape($$_);
675: }
676:
677: if (!$stayOnPage) {
678: $link = "javascript:helpMenu('open')";
679: } else {
680: $link = "javascript:helpMenu('display')";
681: }
682: 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";
683: 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";
684: my $template;
685: if ($text ne "") {
686: $template .=
687: "<table bgcolor='#773311' cellspacing='1' cellpadding='1' border='0'><tr>".
688: "<td bgcolor='#886622'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
689: }
690: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
691: $template .= <<"ENDTEMPLATE";
692: <script type="text/javascript">
693: //<!-- BEGIN LON-CAPA Internal
694: function helpMenu(target) {
695: var caller = this;
696: if (target == 'open') {
697: var newWindow = null;
698: try {
699: newWindow = window.open("","helpmenu","HEIGHT=$height,WIDTH=$width,resize=yes,scrollbars=yes" )
700: }
701: catch(error) {
702: writeHelp(caller);
703: return;
704: }
705: if (newWindow) {
706: caller = newWindow;
707: }
708: }
709: writeHelp(caller);
710: return;
711: }
712: function writeHelp(caller) {
713: caller.document.write("<html><head><title>LON-CAPA Help Menu</title><meta http-equiv='pragma' content='no-cache'></head>")
714: caller.document.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
715: caller.document.write("</html>")
716: caller.document.close()
717: caller.focus()
718: }
719: // END LON-CAPA Internal -->
720: </script>
721: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
722: ENDTEMPLATE
723: if ($component_help) {
724: if (!$text) {
725: $template=&help_open_topic($component_help,undef,$stayOnPage,
726: $width,$height).' '.$template;
727: } else {
728: my $help_text;
729: $help_text=&Apache::lonnet::unescape($topic);
730: $template='<table><tr><td>'.
731: &help_open_topic($component_help,$help_text,$stayOnPage,
732: $width,$height).'</td><td>'.$template.
733: '</td></tr></table>';
734: }
735: }
736: if ($text ne '') { $template.='</td></tr></table>' };
737: return $template;
738: }
739:
740: sub help_open_bug {
741: my ($topic, $text, $stayOnPage, $width, $height) = @_;
742: unless ($ENV{'user.adv'}) { return ''; }
743: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
744: $text = "" if (not defined $text);
745: $stayOnPage = 0 if (not defined $stayOnPage);
746: if ($ENV{'browser.interface'} eq 'textual' ||
747: $ENV{'environment.remote'} eq 'off' ) {
748: $stayOnPage=1;
749: }
750: $width = 600 if (not defined $width);
751: $height = 600 if (not defined $height);
752:
753: $topic=~s/\W+/\+/g;
754: my $link='';
755: my $template='';
756: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
757: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
758: if (!$stayOnPage)
759: {
760: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
761: }
762: else
763: {
764: $link = $url;
765: }
766: # Add the text
767: if ($text ne "")
768: {
769: $template .=
770: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
771: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
772: }
773:
774: # Add the graphic
775: my $title = &mt('Report a Bug');
776: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
777: $template .= <<"ENDTEMPLATE";
778: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
779: ENDTEMPLATE
780: if ($text ne '') { $template.='</td></tr></table>' };
781: return $template;
782:
783: }
784:
785: sub help_open_faq {
786: my ($topic, $text, $stayOnPage, $width, $height) = @_;
787: unless ($ENV{'user.adv'}) { return ''; }
788: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
789: $text = "" if (not defined $text);
790: $stayOnPage = 0 if (not defined $stayOnPage);
791: if ($ENV{'browser.interface'} eq 'textual' ||
792: $ENV{'environment.remote'} eq 'off' ) {
793: $stayOnPage=1;
794: }
795: $width = 350 if (not defined $width);
796: $height = 400 if (not defined $height);
797:
798: $topic=~s/\W+/\+/g;
799: my $link='';
800: my $template='';
801: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
802: if (!$stayOnPage)
803: {
804: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
805: }
806: else
807: {
808: $link = $url;
809: }
810:
811: # Add the text
812: if ($text ne "")
813: {
814: $template .=
815: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
816: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
817: }
818:
819: # Add the graphic
820: my $title = &mt('View the FAQ');
821: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
822: $template .= <<"ENDTEMPLATE";
823: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
824: ENDTEMPLATE
825: if ($text ne '') { $template.='</td></tr></table>' };
826: return $template;
827:
828: }
829:
830: ###############################################################
831: ###############################################################
832:
833: =pod
834:
835: =item * csv_translate($text)
836:
837: Translate $text to allow it to be output as a 'comma separated values'
838: format.
839:
840: =cut
841:
842: ###############################################################
843: ###############################################################
844: sub csv_translate {
845: my $text = shift;
846: $text =~ s/\"/\"\"/g;
847: $text =~ s/\n/ /g;
848: return $text;
849: }
850:
851:
852: ###############################################################
853: ###############################################################
854:
855: =pod
856:
857: =item * define_excel_formats
858:
859: Define some commonly used Excel cell formats.
860:
861: Currently supported formats:
862:
863: =over 4
864:
865: =item header
866:
867: =item bold
868:
869: =item h1
870:
871: =item h2
872:
873: =item h3
874:
875: =item date
876:
877: =back
878:
879: Inputs: $workbook
880:
881: Returns: $format, a hash reference.
882:
883: =cut
884:
885: ###############################################################
886: ###############################################################
887: sub define_excel_formats {
888: my ($workbook) = @_;
889: my $format;
890: $format->{'header'} = $workbook->add_format(bold => 1,
891: bottom => 1,
892: align => 'center');
893: $format->{'bold'} = $workbook->add_format(bold=>1);
894: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
895: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
896: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
897: $format->{'date'} = $workbook->add_format(num_format=>
898: 'mm/dd/yyyy hh:mm:ss');
899: return $format;
900: }
901:
902: ###############################################################
903: ###############################################################
904:
905: =pod
906:
907: =item * change_content_javascript():
908:
909: This and the next function allow you to create small sections of an
910: otherwise static HTML page that you can update on the fly with
911: Javascript, even in Netscape 4.
912:
913: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
914: must be written to the HTML page once. It will prove the Javascript
915: function "change(name, content)". Calling the change function with the
916: name of the section
917: you want to update, matching the name passed to C<changable_area>, and
918: the new content you want to put in there, will put the content into
919: that area.
920:
921: B<Note>: Netscape 4 only reserves enough space for the changable area
922: to contain room for the original contents. You need to "make space"
923: for whatever changes you wish to make, and be B<sure> to check your
924: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
925: it's adequate for updating a one-line status display, but little more.
926: This script will set the space to 100% width, so you only need to
927: worry about height in Netscape 4.
928:
929: Modern browsers are much less limiting, and if you can commit to the
930: user not using Netscape 4, this feature may be used freely with
931: pretty much any HTML.
932:
933: =cut
934:
935: sub change_content_javascript {
936: # If we're on Netscape 4, we need to use Layer-based code
937: if ($ENV{'browser.type'} eq 'netscape' &&
938: $ENV{'browser.version'} =~ /^4\./) {
939: return (<<NETSCAPE4);
940: function change(name, content) {
941: doc = document.layers[name+"___escape"].layers[0].document;
942: doc.open();
943: doc.write(content);
944: doc.close();
945: }
946: NETSCAPE4
947: } else {
948: # Otherwise, we need to use semi-standards-compliant code
949: # (technically, "innerHTML" isn't standard but the equivalent
950: # is really scary, and every useful browser supports it
951: return (<<DOMBASED);
952: function change(name, content) {
953: element = document.getElementById(name);
954: element.innerHTML = content;
955: }
956: DOMBASED
957: }
958: }
959:
960: =pod
961:
962: =item * changable_area($name, $origContent):
963:
964: This provides a "changable area" that can be modified on the fly via
965: the Javascript code provided in C<change_content_javascript>. $name is
966: the name you will use to reference the area later; do not repeat the
967: same name on a given HTML page more then once. $origContent is what
968: the area will originally contain, which can be left blank.
969:
970: =cut
971:
972: sub changable_area {
973: my ($name, $origContent) = @_;
974:
975: if ($ENV{'browser.type'} eq 'netscape' &&
976: $ENV{'browser.version'} =~ /^4\./) {
977: # If this is netscape 4, we need to use the Layer tag
978: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
979: } else {
980: return "<span id='$name'>$origContent</span>";
981: }
982: }
983:
984: =pod
985:
986: =back
987:
988: =cut
989:
990: ###############################################################
991: ## Home server <option> list generating code ##
992: ###############################################################
993:
994: =pod
995:
996: =head1 Home Server option list generating code
997:
998: =over 4
999:
1000: =item * get_domains()
1001:
1002: Returns an array containing each of the domains listed in the hosts.tab
1003: file.
1004:
1005: =cut
1006:
1007: #-------------------------------------------
1008: sub get_domains {
1009: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1010: my @domains;
1011: my %seen;
1012: foreach (sort values(%Apache::lonnet::hostdom)) {
1013: push (@domains,$_) unless $seen{$_}++;
1014: }
1015: return @domains;
1016: }
1017:
1018: # ------------------------------------------
1019:
1020: sub domain_select {
1021: my ($name,$value,$multiple)=@_;
1022: my %domains=map {
1023: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1024: } &get_domains;
1025: if ($multiple) {
1026: $domains{''}=&mt('Any domain');
1027: return &multiple_select_form($name,$value,4,%domains);
1028: } else {
1029: return &select_form($name,$value,%domains);
1030: }
1031: }
1032:
1033: sub multiple_select_form {
1034: my ($name,$value,$size,%hash)=@_;
1035: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1036: my $output='';
1037: if (! defined($size)) {
1038: $size = 4;
1039: if (scalar(keys(%hash))<4) {
1040: $size = scalar(keys(%hash));
1041: }
1042: }
1043: $output.="\n<select name='$name' size='$size' multiple='1'>";
1044: foreach (sort(keys(%hash))) {
1045: $output.='<option value="'.$_.'" ';
1046: $output.='selected ' if ($selected{$_});
1047: $output.='>'.$hash{$_}."</option>\n";
1048: }
1049: $output.="</select>\n";
1050: return $output;
1051: }
1052:
1053: #-------------------------------------------
1054:
1055: =pod
1056:
1057: =item * select_form($defdom,$name,%hash)
1058:
1059: Returns a string containing a <select name='$name' size='1'> form to
1060: allow a user to select options from a hash option_name => displayed text.
1061: See lonrights.pm for an example invocation and use.
1062:
1063: =cut
1064:
1065: #-------------------------------------------
1066: sub select_form {
1067: my ($def,$name,%hash) = @_;
1068: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1069: my @keys;
1070: if (exists($hash{'select_form_order'})) {
1071: @keys=@{$hash{'select_form_order'}};
1072: } else {
1073: @keys=sort(keys(%hash));
1074: }
1075: foreach (@keys) {
1076: $selectform.="<option value=\"$_\" ".
1077: ($_ eq $def ? 'selected' : '').
1078: ">".&mt($hash{$_})."</option>\n";
1079: }
1080: $selectform.="</select>";
1081: return $selectform;
1082: }
1083:
1084: sub gradeleveldescription {
1085: my $gradelevel=shift;
1086: my %gradelevels=(0 => 'Not specified',
1087: 1 => 'Grade 1',
1088: 2 => 'Grade 2',
1089: 3 => 'Grade 3',
1090: 4 => 'Grade 4',
1091: 5 => 'Grade 5',
1092: 6 => 'Grade 6',
1093: 7 => 'Grade 7',
1094: 8 => 'Grade 8',
1095: 9 => 'Grade 9',
1096: 10 => 'Grade 10',
1097: 11 => 'Grade 11',
1098: 12 => 'Grade 12',
1099: 13 => 'Grade 13',
1100: 14 => '100 Level',
1101: 15 => '200 Level',
1102: 16 => '300 Level',
1103: 17 => '400 Level',
1104: 18 => 'Graduate Level');
1105: return &mt($gradelevels{$gradelevel});
1106: }
1107:
1108: sub select_level_form {
1109: my ($deflevel,$name)=@_;
1110: unless ($deflevel) { $deflevel=0; }
1111: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1112: for (my $i=0; $i<=18; $i++) {
1113: $selectform.="<option value=\"$i\" ".
1114: ($i==$deflevel ? 'selected' : '').
1115: ">".&gradeleveldescription($i)."</option>\n";
1116: }
1117: $selectform.="</select>";
1118: return $selectform;
1119: }
1120:
1121: #-------------------------------------------
1122:
1123: =pod
1124:
1125: =item * select_dom_form($defdom,$name,$includeempty)
1126:
1127: Returns a string containing a <select name='$name' size='1'> form to
1128: allow a user to select the domain to preform an operation in.
1129: See loncreateuser.pm for an example invocation and use.
1130:
1131: If the $includeempty flag is set, it also includes an empty choice ("no domain
1132: selected");
1133:
1134: =cut
1135:
1136: #-------------------------------------------
1137: sub select_dom_form {
1138: my ($defdom,$name,$includeempty) = @_;
1139: my @domains = get_domains();
1140: if ($includeempty) { @domains=('',@domains); }
1141: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1142: foreach (@domains) {
1143: $selectdomain.="<option value=\"$_\" ".
1144: ($_ eq $defdom ? 'selected' : '').
1145: ">$_</option>\n";
1146: }
1147: $selectdomain.="</select>";
1148: return $selectdomain;
1149: }
1150:
1151: #-------------------------------------------
1152:
1153: =pod
1154:
1155: =item * get_library_servers($domain)
1156:
1157: Returns a hash which contains keys like '103l3' and values like
1158: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1159: given $domain.
1160:
1161: =cut
1162:
1163: #-------------------------------------------
1164: sub get_library_servers {
1165: my $domain = shift;
1166: my %library_servers;
1167: foreach (keys(%Apache::lonnet::libserv)) {
1168: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1169: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1170: }
1171: }
1172: return %library_servers;
1173: }
1174:
1175: #-------------------------------------------
1176:
1177: =pod
1178:
1179: =item * home_server_option_list($domain)
1180:
1181: returns a string which contains an <option> list to be used in a
1182: <select> form input. See loncreateuser.pm for an example.
1183:
1184: =cut
1185:
1186: #-------------------------------------------
1187: sub home_server_option_list {
1188: my $domain = shift;
1189: my %servers = &get_library_servers($domain);
1190: my $result = '';
1191: foreach (sort keys(%servers)) {
1192: $result.=
1193: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1194: }
1195: return $result;
1196: }
1197:
1198: =pod
1199:
1200: =back
1201:
1202: =cut
1203:
1204: ###############################################################
1205: ## Decoding User Agent ##
1206: ###############################################################
1207:
1208: =pod
1209:
1210: =head1 Decoding the User Agent
1211:
1212: =over 4
1213:
1214: =item * &decode_user_agent()
1215:
1216: Inputs: $r
1217:
1218: Outputs:
1219:
1220: =over 4
1221:
1222: =item * $httpbrowser
1223:
1224: =item * $clientbrowser
1225:
1226: =item * $clientversion
1227:
1228: =item * $clientmathml
1229:
1230: =item * $clientunicode
1231:
1232: =item * $clientos
1233:
1234: =back
1235:
1236: =back
1237:
1238: =cut
1239:
1240: ###############################################################
1241: ###############################################################
1242: sub decode_user_agent {
1243: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1244: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1245: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1246: my $clientbrowser='unknown';
1247: my $clientversion='0';
1248: my $clientmathml='';
1249: my $clientunicode='0';
1250: for (my $i=0;$i<=$#browsertype;$i++) {
1251: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1252: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1253: $clientbrowser=$bname;
1254: $httpbrowser=~/$vreg/i;
1255: $clientversion=$1;
1256: $clientmathml=($clientversion>=$minv);
1257: $clientunicode=($clientversion>=$univ);
1258: }
1259: }
1260: my $clientos='unknown';
1261: if (($httpbrowser=~/linux/i) ||
1262: ($httpbrowser=~/unix/i) ||
1263: ($httpbrowser=~/ux/i) ||
1264: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1265: if (($httpbrowser=~/vax/i) ||
1266: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1267: if ($httpbrowser=~/next/i) { $clientos='next'; }
1268: if (($httpbrowser=~/mac/i) ||
1269: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1270: if ($httpbrowser=~/win/i) { $clientos='win'; }
1271: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1272: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1273: $clientunicode,$clientos,);
1274: }
1275:
1276: ###############################################################
1277: ## Authentication changing form generation subroutines ##
1278: ###############################################################
1279: ##
1280: ## All of the authform_xxxxxxx subroutines take their inputs in a
1281: ## hash, and have reasonable default values.
1282: ##
1283: ## formname = the name given in the <form> tag.
1284: #-------------------------------------------
1285:
1286: =pod
1287:
1288: =head1 Authentication Routines
1289:
1290: =over 4
1291:
1292: =item * authform_xxxxxx
1293:
1294: The authform_xxxxxx subroutines provide javascript and html forms which
1295: handle some of the conveniences required for authentication forms.
1296: This is not an optimal method, but it works.
1297:
1298: See loncreateuser.pm for invocation and use examples.
1299:
1300: =over 4
1301:
1302: =item * authform_header
1303:
1304: =item * authform_authorwarning
1305:
1306: =item * authform_nochange
1307:
1308: =item * authform_kerberos
1309:
1310: =item * authform_internal
1311:
1312: =item * authform_filesystem
1313:
1314: =back
1315:
1316: =back
1317:
1318: =cut
1319:
1320: #-------------------------------------------
1321: sub authform_header{
1322: my %in = (
1323: formname => 'cu',
1324: kerb_def_dom => '',
1325: @_,
1326: );
1327: $in{'formname'} = 'document.' . $in{'formname'};
1328: my $result='';
1329:
1330: #---------------------------------------------- Code for upper case translation
1331: my $Javascript_toUpperCase;
1332: unless ($in{kerb_def_dom}) {
1333: $Javascript_toUpperCase =<<"END";
1334: switch (choice) {
1335: case 'krb': currentform.elements[choicearg].value =
1336: currentform.elements[choicearg].value.toUpperCase();
1337: break;
1338: default:
1339: }
1340: END
1341: } else {
1342: $Javascript_toUpperCase = "";
1343: }
1344:
1345: my $radioval = "'nochange'";
1346: if (exists($in{'curr_authtype'}) &&
1347: defined($in{'curr_authtype'}) &&
1348: $in{'curr_authtype'} ne '') {
1349: $radioval = "'$in{'curr_authtype'}arg'";
1350: }
1351: my $argfield = 'null';
1352: if ( grep/^mode$/,(keys %in) ) {
1353: if ($in{'mode'} eq 'modifycourse') {
1354: if ( grep/^curr_authtype$/,(keys %in) ) {
1355: $radioval = "'$in{'curr_authtype'}'";
1356: }
1357: if ( grep/^curr_autharg$/,(keys %in) ) {
1358: unless ($in{'curr_autharg'} eq '') {
1359: $argfield = "'$in{'curr_autharg'}'";
1360: }
1361: }
1362: }
1363: }
1364:
1365: $result.=<<"END";
1366: var current = new Object();
1367: current.radiovalue = $radioval;
1368: current.argfield = $argfield;
1369:
1370: function changed_radio(choice,currentform) {
1371: var choicearg = choice + 'arg';
1372: // If a radio button in changed, we need to change the argfield
1373: if (current.radiovalue != choice) {
1374: current.radiovalue = choice;
1375: if (current.argfield != null) {
1376: currentform.elements[current.argfield].value = '';
1377: }
1378: if (choice == 'nochange') {
1379: current.argfield = null;
1380: } else {
1381: current.argfield = choicearg;
1382: switch(choice) {
1383: case 'krb':
1384: currentform.elements[current.argfield].value =
1385: "$in{'kerb_def_dom'}";
1386: break;
1387: default:
1388: break;
1389: }
1390: }
1391: }
1392: return;
1393: }
1394:
1395: function changed_text(choice,currentform) {
1396: var choicearg = choice + 'arg';
1397: if (currentform.elements[choicearg].value !='') {
1398: $Javascript_toUpperCase
1399: // clear old field
1400: if ((current.argfield != choicearg) && (current.argfield != null)) {
1401: currentform.elements[current.argfield].value = '';
1402: }
1403: current.argfield = choicearg;
1404: }
1405: set_auth_radio_buttons(choice,currentform);
1406: return;
1407: }
1408:
1409: function set_auth_radio_buttons(newvalue,currentform) {
1410: var i=0;
1411: while (i < currentform.login.length) {
1412: if (currentform.login[i].value == newvalue) { break; }
1413: i++;
1414: }
1415: if (i == currentform.login.length) {
1416: return;
1417: }
1418: current.radiovalue = newvalue;
1419: currentform.login[i].checked = true;
1420: return;
1421: }
1422: END
1423: return $result;
1424: }
1425:
1426: sub authform_authorwarning{
1427: my $result='';
1428: $result='<i>'.
1429: &mt('As a general rule, only authors or co-authors should be '.
1430: 'filesystem authenticated '.
1431: '(which allows access to the server filesystem).')."</i>\n";
1432: return $result;
1433: }
1434:
1435: sub authform_nochange{
1436: my %in = (
1437: formname => 'document.cu',
1438: kerb_def_dom => 'MSU.EDU',
1439: @_,
1440: );
1441: my $result = &mt('[_1] Do not change login data',
1442: '<input type="radio" name="login" value="nochange" '.
1443: 'checked="checked" onclick="'.
1444: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1445: return $result;
1446: }
1447:
1448: sub authform_kerberos{
1449: my %in = (
1450: formname => 'document.cu',
1451: kerb_def_dom => 'MSU.EDU',
1452: kerb_def_auth => 'krb4',
1453: @_,
1454: );
1455: my ($check4,$check5,$krbarg);
1456: if ($in{'kerb_def_auth'} eq 'krb5') {
1457: $check5 = " checked=\"on\"";
1458: } else {
1459: $check4 = " checked=\"on\"";
1460: }
1461: $krbarg = $in{'kerb_def_dom'};
1462:
1463: my $krbcheck = "";
1464: if ( grep/^curr_authtype$/,(keys %in) ) {
1465: if ($in{'curr_authtype'} =~ m/^krb/) {
1466: $krbcheck = " checked=\"on\"";
1467: if ( grep/^curr_autharg$/,(keys %in) ) {
1468: $krbarg = $in{'curr_autharg'};
1469: }
1470: }
1471: }
1472:
1473: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1474: my $result .= &mt
1475: ('[_1] Kerberos authenticated with domain [_2] '.
1476: '[_3] Version 4 [_4] Version 5',
1477: '<input type="radio" name="login" value="krb" '.
1478: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1479: '<input type="text" size="10" name="krbarg" '.
1480: 'value="'.$krbarg.'" '.
1481: 'onchange="'.$jscall.'" />',
1482: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1483: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1484: return $result;
1485: }
1486:
1487: sub authform_internal{
1488: my %args = (
1489: formname => 'document.cu',
1490: kerb_def_dom => 'MSU.EDU',
1491: @_,
1492: );
1493:
1494: my $intcheck = "";
1495: my $intarg = 'value=""';
1496: if ( grep/^curr_authtype$/,(keys %args) ) {
1497: if ($args{'curr_authtype'} eq 'int') {
1498: $intcheck = " checked=\"on\"";
1499: if ( grep/^curr_autharg$/,(keys %args) ) {
1500: $intarg = "value=\"$args{'curr_autharg'}\"";
1501: }
1502: }
1503: }
1504:
1505: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1506: my $result.=&mt
1507: ('[_1] Internally authenticated (with initial password [_2])',
1508: '<input type="radio" name="login" value="int" '.$intcheck.
1509: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1510: '<input type="text" size="10" name="intarg" '.$intarg.
1511: ' onchange="'.$jscall.'" />');
1512: return $result;
1513: }
1514:
1515: sub authform_local{
1516: my %in = (
1517: formname => 'document.cu',
1518: kerb_def_dom => 'MSU.EDU',
1519: @_,
1520: );
1521:
1522: my $loccheck = "";
1523: my $locarg = 'value=""';
1524: if ( grep/^curr_authtype$/,(keys %in) ) {
1525: if ($in{'curr_authtype'} eq 'loc') {
1526: $loccheck = " checked=\"on\"";
1527: if ( grep/^curr_autharg$/,(keys %in) ) {
1528: $locarg = "value=\"$in{'curr_autharg'}\"";
1529: }
1530: }
1531: }
1532:
1533: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1534: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1535: '<input type="radio" name="login" value="loc" '.$loccheck.
1536: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1537: '<input type="text" size="10" name="locarg" '.$locarg.
1538: ' onchange="'.$jscall.'" />');
1539: return $result;
1540: }
1541:
1542: sub authform_filesystem{
1543: my %in = (
1544: formname => 'document.cu',
1545: kerb_def_dom => 'MSU.EDU',
1546: @_,
1547: );
1548: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1549: my $result.= &mt
1550: ('[_1] Filesystem Authenticated (with initial password [_2])',
1551: '<input type="radio" name="login" value="fsys" '.
1552: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1553: '<input type="text" size="10" name="fsysarg" value="" '.
1554: 'onchange="'.$jscall.'" />');
1555: return $result;
1556: }
1557:
1558: ###############################################################
1559: ## Get Authentication Defaults for Domain ##
1560: ###############################################################
1561:
1562: =pod
1563:
1564: =head1 Domains and Authentication
1565:
1566: Returns default authentication type and an associated argument as
1567: listed in file 'domain.tab'.
1568:
1569: =over 4
1570:
1571: =item * get_auth_defaults
1572:
1573: get_auth_defaults($target_domain) returns the default authentication
1574: type and an associated argument (initial password or a kerberos domain).
1575: These values are stored in lonTabs/domain.tab
1576:
1577: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1578:
1579: If target_domain is not found in domain.tab, returns nothing ('').
1580:
1581: =cut
1582:
1583: #-------------------------------------------
1584: sub get_auth_defaults {
1585: my $domain=shift;
1586: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1587: }
1588: ###############################################################
1589: ## End Get Authentication Defaults for Domain ##
1590: ###############################################################
1591:
1592: ###############################################################
1593: ## Get Kerberos Defaults for Domain ##
1594: ###############################################################
1595: ##
1596: ## Returns default kerberos version and an associated argument
1597: ## as listed in file domain.tab. If not listed, provides
1598: ## appropriate default domain and kerberos version.
1599: ##
1600: #-------------------------------------------
1601:
1602: =pod
1603:
1604: =item * get_kerberos_defaults
1605:
1606: get_kerberos_defaults($target_domain) returns the default kerberos
1607: version and domain. If not found in domain.tabs, it defaults to
1608: version 4 and the domain of the server.
1609:
1610: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1611:
1612: =cut
1613:
1614: #-------------------------------------------
1615: sub get_kerberos_defaults {
1616: my $domain=shift;
1617: my ($krbdef,$krbdefdom) =
1618: &Apache::loncommon::get_auth_defaults($domain);
1619: unless ($krbdef =~/^krb/ && $krbdefdom) {
1620: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1621: my $krbdefdom=$1;
1622: $krbdefdom=~tr/a-z/A-Z/;
1623: $krbdef = "krb4";
1624: }
1625: return ($krbdef,$krbdefdom);
1626: }
1627:
1628: =pod
1629:
1630: =back
1631:
1632: =cut
1633:
1634: ###############################################################
1635: ## Thesaurus Functions ##
1636: ###############################################################
1637:
1638: =pod
1639:
1640: =head1 Thesaurus Functions
1641:
1642: =over 4
1643:
1644: =item * initialize_keywords
1645:
1646: Initializes the package variable %Keywords if it is empty. Uses the
1647: package variable $thesaurus_db_file.
1648:
1649: =cut
1650:
1651: ###################################################
1652:
1653: sub initialize_keywords {
1654: return 1 if (scalar keys(%Keywords));
1655: # If we are here, %Keywords is empty, so fill it up
1656: # Make sure the file we need exists...
1657: if (! -e $thesaurus_db_file) {
1658: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1659: " failed because it does not exist");
1660: return 0;
1661: }
1662: # Set up the hash as a database
1663: my %thesaurus_db;
1664: if (! tie(%thesaurus_db,'GDBM_File',
1665: $thesaurus_db_file,&GDBM_READER(),0640)){
1666: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1667: $thesaurus_db_file);
1668: return 0;
1669: }
1670: # Get the average number of appearances of a word.
1671: my $avecount = $thesaurus_db{'average.count'};
1672: # Put keywords (those that appear > average) into %Keywords
1673: while (my ($word,$data)=each (%thesaurus_db)) {
1674: my ($count,undef) = split /:/,$data;
1675: $Keywords{$word}++ if ($count > $avecount);
1676: }
1677: untie %thesaurus_db;
1678: # Remove special values from %Keywords.
1679: foreach ('total.count','average.count') {
1680: delete($Keywords{$_}) if (exists($Keywords{$_}));
1681: }
1682: return 1;
1683: }
1684:
1685: ###################################################
1686:
1687: =pod
1688:
1689: =item * keyword($word)
1690:
1691: Returns true if $word is a keyword. A keyword is a word that appears more
1692: than the average number of times in the thesaurus database. Calls
1693: &initialize_keywords
1694:
1695: =cut
1696:
1697: ###################################################
1698:
1699: sub keyword {
1700: return if (!&initialize_keywords());
1701: my $word=lc(shift());
1702: $word=~s/\W//g;
1703: return exists($Keywords{$word});
1704: }
1705:
1706: ###############################################################
1707:
1708: =pod
1709:
1710: =item * get_related_words
1711:
1712: Look up a word in the thesaurus. Takes a scalar argument and returns
1713: an array of words. If the keyword is not in the thesaurus, an empty array
1714: will be returned. The order of the words returned is determined by the
1715: database which holds them.
1716:
1717: Uses global $thesaurus_db_file.
1718:
1719: =cut
1720:
1721: ###############################################################
1722: sub get_related_words {
1723: my $keyword = shift;
1724: my %thesaurus_db;
1725: if (! -e $thesaurus_db_file) {
1726: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1727: "failed because the file does not exist");
1728: return ();
1729: }
1730: if (! tie(%thesaurus_db,'GDBM_File',
1731: $thesaurus_db_file,&GDBM_READER(),0640)){
1732: return ();
1733: }
1734: my @Words=();
1735: if (exists($thesaurus_db{$keyword})) {
1736: $_ = $thesaurus_db{$keyword};
1737: (undef,@Words) = split/:/; # The first element is the number of times
1738: # the word appears. We do not need it now.
1739: for (my $i=0;$i<=$#Words;$i++) {
1740: ($Words[$i],undef)= split/\,/,$Words[$i];
1741: }
1742: }
1743: untie %thesaurus_db;
1744: return @Words;
1745: }
1746:
1747: =pod
1748:
1749: =back
1750:
1751: =cut
1752:
1753: # -------------------------------------------------------------- Plaintext name
1754: =pod
1755:
1756: =head1 User Name Functions
1757:
1758: =over 4
1759:
1760: =item * plainname($uname,$udom,$first)
1761:
1762: Takes a users logon name and returns it as a string in
1763: "first middle last generation" form
1764: if $first is set to 'lastname' then it returns it as
1765: 'lastname generation, firstname middlename' if their is a lastname
1766:
1767: =cut
1768:
1769: ###############################################################
1770: sub plainname {
1771: my ($uname,$udom,$first)=@_;
1772: my %names=&Apache::lonnet::get('environment',
1773: ['firstname','middlename','lastname','generation'],
1774: $udom,$uname);
1775: my $name=&Apache::lonnet::format_name($names{'firstname'},
1776: $names{'middlename'},
1777: $names{'lastname'},
1778: $names{'generation'},$first);
1779: $name=~s/^\s+//;
1780: $name=~s/\s+$//;
1781: $name=~s/\s+/ /g;
1782: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1783: return $name;
1784: }
1785:
1786: # -------------------------------------------------------------------- Nickname
1787: =pod
1788:
1789: =item * nickname($uname,$udom)
1790:
1791: Gets a users name and returns it as a string as
1792:
1793: ""nickname""
1794:
1795: if the user has a nickname or
1796:
1797: "first middle last generation"
1798:
1799: if the user does not
1800:
1801: =cut
1802:
1803: sub nickname {
1804: my ($uname,$udom)=@_;
1805: my %names;
1806: if ($uname eq $ENV{'user.name'} &&
1807: $udom eq $ENV{'user.domain'}) {
1808: %names=('nickname' => $ENV{'environment.nickname'} ,
1809: 'firstname' => $ENV{'environment.firstname'} ,
1810: 'middlename' => $ENV{'environment.middlename'},
1811: 'lastname' => $ENV{'environment.lastname'} ,
1812: 'generation' => $ENV{'environment.generation'});
1813: } else {
1814: %names=&Apache::lonnet::get('environment',
1815: ['nickname','firstname','middlename',
1816: 'lastname','generation'],$udom,$uname);
1817: }
1818: my $name=$names{'nickname'};
1819: if ($name) {
1820: $name='"'.$name.'"';
1821: } else {
1822: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1823: $names{'lastname'}.' '.$names{'generation'};
1824: $name=~s/\s+$//;
1825: $name=~s/\s+/ /g;
1826: }
1827: return $name;
1828: }
1829:
1830:
1831: # ------------------------------------------------------------------ Screenname
1832:
1833: =pod
1834:
1835: =item * screenname($uname,$udom)
1836:
1837: Gets a users screenname and returns it as a string
1838:
1839: =cut
1840:
1841: sub screenname {
1842: my ($uname,$udom)=@_;
1843: if ($uname eq $ENV{'user.name'} &&
1844: $udom eq $ENV{'user.domain'}) {return $ENV{'environment.screenname'};}
1845: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1846: return $names{'screenname'};
1847: }
1848:
1849:
1850: # ------------------------------------------------------------- Message Wrapper
1851:
1852: sub messagewrapper {
1853: my ($link,$username,$domain)=@_;
1854: return
1855: '<a href="/adm/email?compose=individual&'.
1856: 'recname='.$username.'&recdom='.$domain.'" '.
1857: 'title="'.&mt('Send message').'">'.$link.'</a>';
1858: }
1859: # --------------------------------------------------------------- Notes Wrapper
1860:
1861: sub noteswrapper {
1862: my ($link,$un,$do)=@_;
1863: return
1864: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1865: }
1866: # ------------------------------------------------------------- Aboutme Wrapper
1867:
1868: sub aboutmewrapper {
1869: my ($link,$username,$domain,$target)=@_;
1870: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1871: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1872: }
1873:
1874: # ------------------------------------------------------------ Syllabus Wrapper
1875:
1876:
1877: sub syllabuswrapper {
1878: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1879: if ($fontcolor) {
1880: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1881: }
1882: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1883: }
1884:
1885: sub track_student_link {
1886: my ($linktext,$sname,$sdom,$target) = @_;
1887: my $link ="/adm/trackstudent";
1888: my $title = 'View recent activity';
1889: if (defined($sname) && $sname !~ /^\s*$/ &&
1890: defined($sdom) && $sdom !~ /^\s*$/) {
1891: $link .= "?selected_student=$sname:$sdom";
1892: $title .= ' of this student';
1893: }
1894: if (defined($target) && $target !~ /^\s*$/) {
1895: $target = qq{target="$target"};
1896: } else {
1897: $target = '';
1898: }
1899: return qq{<a href="$link" title="$title" $target>$linktext</a>};
1900: }
1901:
1902:
1903:
1904: =pod
1905:
1906: =back
1907:
1908: =head1 Access .tab File Data
1909:
1910: =over 4
1911:
1912: =item * languageids()
1913:
1914: returns list of all language ids
1915:
1916: =cut
1917:
1918: sub languageids {
1919: return sort(keys(%language));
1920: }
1921:
1922: =pod
1923:
1924: =item * languagedescription()
1925:
1926: returns description of a specified language id
1927:
1928: =cut
1929:
1930: sub languagedescription {
1931: my $code=shift;
1932: return ($supported_language{$code}?'* ':'').
1933: $language{$code}.
1934: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1935: }
1936:
1937: sub plainlanguagedescription {
1938: my $code=shift;
1939: return $language{$code};
1940: }
1941:
1942: sub supportedlanguagecode {
1943: my $code=shift;
1944: return $supported_language{$code};
1945: }
1946:
1947: =pod
1948:
1949: =item * copyrightids()
1950:
1951: returns list of all copyrights
1952:
1953: =cut
1954:
1955: sub copyrightids {
1956: return sort(keys(%cprtag));
1957: }
1958:
1959: =pod
1960:
1961: =item * copyrightdescription()
1962:
1963: returns description of a specified copyright id
1964:
1965: =cut
1966:
1967: sub copyrightdescription {
1968: return &mt($cprtag{shift(@_)});
1969: }
1970:
1971: =pod
1972:
1973: =item * source_copyrightids()
1974:
1975: returns list of all source copyrights
1976:
1977: =cut
1978:
1979: sub source_copyrightids {
1980: return sort(keys(%scprtag));
1981: }
1982:
1983: =pod
1984:
1985: =item * source_copyrightdescription()
1986:
1987: returns description of a specified source copyright id
1988:
1989: =cut
1990:
1991: sub source_copyrightdescription {
1992: return &mt($scprtag{shift(@_)});
1993: }
1994:
1995: =pod
1996:
1997: =item * filecategories()
1998:
1999: returns list of all file categories
2000:
2001: =cut
2002:
2003: sub filecategories {
2004: return sort(keys(%category_extensions));
2005: }
2006:
2007: =pod
2008:
2009: =item * filecategorytypes()
2010:
2011: returns list of file types belonging to a given file
2012: category
2013:
2014: =cut
2015:
2016: sub filecategorytypes {
2017: return @{$category_extensions{lc($_[0])}};
2018: }
2019:
2020: =pod
2021:
2022: =item * fileembstyle()
2023:
2024: returns embedding style for a specified file type
2025:
2026: =cut
2027:
2028: sub fileembstyle {
2029: return $fe{lc(shift(@_))};
2030: }
2031:
2032:
2033: sub filecategoryselect {
2034: my ($name,$value)=@_;
2035: return &select_form($value,$name,
2036: '' => &mt('Any category'),
2037: map { $_,$_ } sort(keys(%category_extensions)));
2038: }
2039:
2040: =pod
2041:
2042: =item * filedescription()
2043:
2044: returns description for a specified file type
2045:
2046: =cut
2047:
2048: sub filedescription {
2049: my $file_description = $fd{lc(shift())};
2050: $file_description =~ s:([\[\]]):~$1:g;
2051: return &mt($file_description);
2052: }
2053:
2054: =pod
2055:
2056: =item * filedescriptionex()
2057:
2058: returns description for a specified file type with
2059: extra formatting
2060:
2061: =cut
2062:
2063: sub filedescriptionex {
2064: my $ex=shift;
2065: my $file_description = $fd{lc($ex)};
2066: $file_description =~ s:([\[\]]):~$1:g;
2067: return '.'.$ex.' '.&mt($file_description);
2068: }
2069:
2070: # End of .tab access
2071: =pod
2072:
2073: =back
2074:
2075: =cut
2076:
2077: # ------------------------------------------------------------------ File Types
2078: sub fileextensions {
2079: return sort(keys(%fe));
2080: }
2081:
2082: # ----------------------------------------------------------- Display Languages
2083: # returns a hash with all desired display languages
2084: #
2085:
2086: sub display_languages {
2087: my %languages=();
2088: foreach (&preferred_languages()) {
2089: $languages{$_}=1;
2090: }
2091: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2092: if ($ENV{'form.displaylanguage'}) {
2093: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2094: $languages{$_}=1;
2095: }
2096: }
2097: return %languages;
2098: }
2099:
2100: sub preferred_languages {
2101: my @languages=();
2102: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2103: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2104: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2105: }
2106: if ($ENV{'environment.languages'}) {
2107: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2108: }
2109: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2110: if ($browser) {
2111: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2112: }
2113: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2114: @languages=(@languages,
2115: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2116: }
2117: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2118: @languages=(@languages,
2119: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2120: }
2121: if ($Apache::lonnet::domain_lang_def{
2122: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2123: @languages=(@languages,
2124: $Apache::lonnet::domain_lang_def{
2125: $Apache::lonnet::perlvar{'lonDefDomain'}});
2126: }
2127: # turn "en-ca" into "en-ca,en"
2128: my @genlanguages;
2129: foreach (@languages) {
2130: unless ($_=~/\w/) { next; }
2131: push (@genlanguages,$_);
2132: if ($_=~/(\-|\_)/) {
2133: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2134: }
2135: }
2136: return @genlanguages;
2137: }
2138:
2139: ###############################################################
2140: ## Student Answer Attempts ##
2141: ###############################################################
2142:
2143: =pod
2144:
2145: =head1 Alternate Problem Views
2146:
2147: =over 4
2148:
2149: =item * get_previous_attempt($symb, $username, $domain, $course,
2150: $getattempt, $regexp, $gradesub)
2151:
2152: Return string with previous attempt on problem. Arguments:
2153:
2154: =over 4
2155:
2156: =item * $symb: Problem, including path
2157:
2158: =item * $username: username of the desired student
2159:
2160: =item * $domain: domain of the desired student
2161:
2162: =item * $course: Course ID
2163:
2164: =item * $getattempt: Leave blank for all attempts, otherwise put
2165: something
2166:
2167: =item * $regexp: if string matches this regexp, the string will be
2168: sent to $gradesub
2169:
2170: =item * $gradesub: routine that processes the string if it matches $regexp
2171:
2172: =back
2173:
2174: The output string is a table containing all desired attempts, if any.
2175:
2176: =cut
2177:
2178: sub get_previous_attempt {
2179: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2180: my $prevattempts='';
2181: no strict 'refs';
2182: if ($symb) {
2183: my (%returnhash)=
2184: &Apache::lonnet::restore($symb,$course,$domain,$username);
2185: if ($returnhash{'version'}) {
2186: my %lasthash=();
2187: my $version;
2188: for ($version=1;$version<=$returnhash{'version'};$version++) {
2189: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2190: $lasthash{$_}=$returnhash{$version.':'.$_};
2191: }
2192: }
2193: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2194: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2195: foreach (sort(keys %lasthash)) {
2196: my ($ign,@parts) = split(/\./,$_);
2197: if ($#parts > 0) {
2198: my $data=$parts[-1];
2199: pop(@parts);
2200: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2201: } else {
2202: if ($#parts == 0) {
2203: $prevattempts.='<th>'.$parts[0].'</th>';
2204: } else {
2205: $prevattempts.='<th>'.$ign.'</th>';
2206: }
2207: }
2208: }
2209: if ($getattempt eq '') {
2210: for ($version=1;$version<=$returnhash{'version'};$version++) {
2211: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2212: foreach (sort(keys %lasthash)) {
2213: my $value;
2214: if ($_ =~ /timestamp/) {
2215: $value=scalar(localtime($returnhash{$version.':'.$_}));
2216: } else {
2217: $value=$returnhash{$version.':'.$_};
2218: }
2219: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2220: }
2221: }
2222: }
2223: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2224: foreach (sort(keys %lasthash)) {
2225: my $value;
2226: if ($_ =~ /timestamp/) {
2227: $value=scalar(localtime($lasthash{$_}));
2228: } else {
2229: $value=$lasthash{$_};
2230: }
2231: $value=&Apache::lonnet::unescape($value);
2232: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2233: $prevattempts.='<td>'.$value.' </td>';
2234: }
2235: $prevattempts.='</tr></table></td></tr></table>';
2236: } else {
2237: $prevattempts='Nothing submitted - no attempts.';
2238: }
2239: } else {
2240: $prevattempts='No data.';
2241: }
2242: }
2243:
2244: sub relative_to_absolute {
2245: my ($url,$output)=@_;
2246: my $parser=HTML::TokeParser->new(\$output);
2247: my $token;
2248: my $thisdir=$url;
2249: my @rlinks=();
2250: while ($token=$parser->get_token) {
2251: if ($token->[0] eq 'S') {
2252: if ($token->[1] eq 'a') {
2253: if ($token->[2]->{'href'}) {
2254: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2255: }
2256: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2257: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2258: } elsif ($token->[1] eq 'base') {
2259: $thisdir=$token->[2]->{'href'};
2260: }
2261: }
2262: }
2263: $thisdir=~s-/[^/]*$--;
2264: foreach (@rlinks) {
2265: unless (($_=~/^http:\/\//i) ||
2266: ($_=~/^\//) ||
2267: ($_=~/^javascript:/i) ||
2268: ($_=~/^mailto:/i) ||
2269: ($_=~/^\#/)) {
2270: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2271: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2272: }
2273: }
2274: # -------------------------------------------------- Deal with Applet codebases
2275: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2276: return $output;
2277: }
2278:
2279: =pod
2280:
2281: =item * get_student_view
2282:
2283: show a snapshot of what student was looking at
2284:
2285: =cut
2286:
2287: sub get_student_view {
2288: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2289: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2290: my (%form);
2291: my @elements=('symb','courseid','domain','username');
2292: foreach my $element (@elements) {
2293: $form{'grade_'.$element}=eval '$'.$element #'
2294: }
2295: if (defined($moreenv)) {
2296: %form=(%form,%{$moreenv});
2297: }
2298: if (defined($target)) { $form{'grade_target'} = $target; }
2299: $feedurl=&Apache::lonnet::clutter($feedurl);
2300: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2301: $userview=~s/\<body[^\>]*\>//gi;
2302: $userview=~s/\<\/body\>//gi;
2303: $userview=~s/\<html\>//gi;
2304: $userview=~s/\<\/html\>//gi;
2305: $userview=~s/\<head\>//gi;
2306: $userview=~s/\<\/head\>//gi;
2307: $userview=~s/action\s*\=/would_be_action\=/gi;
2308: $userview=&relative_to_absolute($feedurl,$userview);
2309: return $userview;
2310: }
2311:
2312: =pod
2313:
2314: =item * get_student_answers()
2315:
2316: show a snapshot of how student was answering problem
2317:
2318: =cut
2319:
2320: sub get_student_answers {
2321: my ($symb,$username,$domain,$courseid,%form) = @_;
2322: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2323: my (%moreenv);
2324: my @elements=('symb','courseid','domain','username');
2325: foreach my $element (@elements) {
2326: $moreenv{'grade_'.$element}=eval '$'.$element #'
2327: }
2328: $moreenv{'grade_target'}='answer';
2329: %moreenv=(%form,%moreenv);
2330: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2331: return $userview;
2332: }
2333:
2334: =pod
2335:
2336: =item * &submlink()
2337:
2338: Inputs: $text $uname $udom $symb $target
2339:
2340: Returns: A link to grades.pm such as to see the SUBM view of a student
2341:
2342: =cut
2343:
2344: ###############################################
2345: sub submlink {
2346: my ($text,$uname,$udom,$symb,$target)=@_;
2347: if (!($uname && $udom)) {
2348: (my $cursymb, my $courseid,$udom,$uname)=
2349: &Apache::lonxml::whichuser($symb);
2350: if (!$symb) { $symb=$cursymb; }
2351: }
2352: if (!$symb) { $symb=&symbread(); }
2353: $symb=&Apache::lonnet::escape($symb);
2354: if ($target) { $target="target=\"$target\""; }
2355: return '<a href="/adm/grades?&command=submission&'.
2356: 'symb='.$symb.'&student='.$uname.
2357: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2358: }
2359: ##############################################
2360:
2361: =pod
2362:
2363: =item * &pgrdlink()
2364:
2365: Inputs: $text $uname $udom $symb $target
2366:
2367: Returns: A link to grades.pm such as to see the PGRD view of a student
2368:
2369: =cut
2370:
2371: ###############################################
2372: sub pgrdlink {
2373: my $link=&submlink(@_);
2374: $link=~s/(&command=submission)/$1&showgrading=yes/;
2375: return $link;
2376: }
2377: ##############################################
2378:
2379: =pod
2380:
2381: =item * &pprmlink()
2382:
2383: Inputs: $text $uname $udom $symb $target
2384:
2385: Returns: A link to parmset.pm such as to see the PPRM view of a
2386: student andn resource
2387:
2388: =cut
2389:
2390: ###############################################
2391: sub pprmlink {
2392: my ($text,$uname,$udom,$symb,$target)=@_;
2393: if (!($uname && $udom)) {
2394: (my $cursymb, my $courseid,$udom,$uname)=
2395: &Apache::lonxml::whichuser($symb);
2396: if (!$symb) { $symb=$cursymb; }
2397: }
2398: if (!$symb) { $symb=&symbread(); }
2399: $symb=&Apache::lonnet::escape($symb);
2400: if ($target) { $target="target=\"$target\""; }
2401: return '<a href="/adm/parmset?&command=set&'.
2402: 'symb='.$symb.'&uname='.$uname.
2403: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2404: }
2405: ##############################################
2406:
2407: =pod
2408:
2409: =back
2410:
2411: =cut
2412:
2413: ###############################################
2414:
2415:
2416: sub timehash {
2417: my @ltime=localtime(shift);
2418: return ( 'seconds' => $ltime[0],
2419: 'minutes' => $ltime[1],
2420: 'hours' => $ltime[2],
2421: 'day' => $ltime[3],
2422: 'month' => $ltime[4]+1,
2423: 'year' => $ltime[5]+1900,
2424: 'weekday' => $ltime[6],
2425: 'dayyear' => $ltime[7]+1,
2426: 'dlsav' => $ltime[8] );
2427: }
2428:
2429: sub maketime {
2430: my %th=@_;
2431: return POSIX::mktime(
2432: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2433: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2434: }
2435:
2436: #########################################
2437:
2438: sub findallcourses {
2439: my %courses=();
2440: my $now=time;
2441: foreach (keys %ENV) {
2442: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2443: my ($starttime,$endtime)=$ENV{$_};
2444: my $active=1;
2445: if ($starttime) {
2446: if ($now<$starttime) { $active=0; }
2447: }
2448: if ($endtime) {
2449: if ($now>$endtime) { $active=0; }
2450: }
2451: if ($active) { $courses{$1.'_'.$2}=1; }
2452: }
2453: }
2454: return keys %courses;
2455: }
2456:
2457: ###############################################
2458: ###############################################
2459:
2460: =pod
2461:
2462: =head1 Domain Template Functions
2463:
2464: =over 4
2465:
2466: =item * &determinedomain()
2467:
2468: Inputs: $domain (usually will be undef)
2469:
2470: Returns: Determines which domain should be used for designs
2471:
2472: =cut
2473:
2474: ###############################################
2475: sub determinedomain {
2476: my $domain=shift;
2477: if (! $domain) {
2478: # Determine domain if we have not been given one
2479: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2480: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2481: if ($ENV{'request.role.domain'}) {
2482: $domain=$ENV{'request.role.domain'};
2483: }
2484: }
2485: return $domain;
2486: }
2487: ###############################################
2488: =pod
2489:
2490: =item * &domainlogo()
2491:
2492: Inputs: $domain (usually will be undef)
2493:
2494: Returns: A link to a domain logo, if the domain logo exists.
2495: If the domain logo does not exist, a description of the domain.
2496:
2497: =cut
2498:
2499: ###############################################
2500: sub domainlogo {
2501: my $domain = &determinedomain(shift);
2502: # See if there is a logo
2503: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2504: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2505: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2506: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2507: return $Apache::lonnet::domaindescription{$domain};
2508: } else {
2509: return '';
2510: }
2511: }
2512: ##############################################
2513:
2514: =pod
2515:
2516: =item * &designparm()
2517:
2518: Inputs: $which parameter; $domain (usually will be undef)
2519:
2520: Returns: value of designparamter $which
2521:
2522: =cut
2523:
2524: ##############################################
2525: sub designparm {
2526: my ($which,$domain)=@_;
2527: if ($ENV{'browser.blackwhite'} eq 'on') {
2528: if ($which=~/\.(font|alink|vlink|link)$/) {
2529: return '#000000';
2530: }
2531: if ($which=~/\.(pgbg|sidebg)$/) {
2532: return '#FFFFFF';
2533: }
2534: if ($which=~/\.tabbg$/) {
2535: return '#CCCCCC';
2536: }
2537: }
2538: if ($ENV{'environment.color.'.$which}) {
2539: return $ENV{'environment.color.'.$which};
2540: }
2541: $domain=&determinedomain($domain);
2542: if ($designhash{$domain.'.'.$which}) {
2543: return $designhash{$domain.'.'.$which};
2544: } else {
2545: return $designhash{'default.'.$which};
2546: }
2547: }
2548:
2549: ###############################################
2550: ###############################################
2551:
2552: =pod
2553:
2554: =back
2555:
2556: =head1 HTTP Helpers
2557:
2558: =over 4
2559:
2560: =item * &bodytag()
2561:
2562: Returns a uniform header for LON-CAPA web pages.
2563:
2564: Inputs:
2565:
2566: =over 4
2567:
2568: =item * $title, A title to be displayed on the page.
2569:
2570: =item * $function, the current role (can be undef).
2571:
2572: =item * $addentries, extra parameters for the <body> tag.
2573:
2574: =item * $bodyonly, if defined, only return the <body> tag.
2575:
2576: =item * $domain, if defined, force a given domain.
2577:
2578: =item * $forcereg, if page should register as content page (relevant for
2579: text interface only)
2580:
2581: =back
2582:
2583: Returns: A uniform header for LON-CAPA web pages.
2584: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2585: If $bodyonly is undef or zero, an html string containing a <body> tag and
2586: other decorations will be returned.
2587:
2588: =cut
2589:
2590: sub bodytag {
2591: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle)=@_;
2592: $title=&mt($title);
2593: $function = &get_users_function() if (!$function);
2594: my $img=&designparm($function.'.img',$domain);
2595: my $pgbg=&designparm($function.'.pgbg',$domain);
2596: my $tabbg=&designparm($function.'.tabbg',$domain);
2597: my $font=&designparm($function.'.font',$domain);
2598: my $link=&designparm($function.'.link',$domain);
2599: my $alink=&designparm($function.'.alink',$domain);
2600: my $vlink=&designparm($function.'.vlink',$domain);
2601: my $sidebg=&designparm($function.'.sidebg',$domain);
2602: # Accessibility font enhance
2603: unless ($addentries) { $addentries=''; }
2604: my $addstyle='';
2605: if ($ENV{'browser.fontenhance'} eq 'on') {
2606: $addstyle=' font-size: x-large;';
2607: }
2608: # role and realm
2609: my ($role,$realm)
2610: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2611: # realm
2612: if ($ENV{'request.course.id'}) {
2613: $realm=
2614: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2615: }
2616: unless ($realm) { $realm=' '; }
2617: # Set messages
2618: my $messages=&domainlogo($domain);
2619: # Port for miniserver
2620: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2621: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2622: # construct main body tag
2623: my $bodytag = <<END;
2624: <style type="text/css">
2625: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2626: a:focus { color: red; background: yellow }
2627: </style>
2628: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2629: style="margin-top: 0px;$addstyle" $addentries>
2630: END
2631: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2632: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2633: if ($bodyonly) {
2634: return $bodytag;
2635: } elsif ($ENV{'browser.interface'} eq 'textual') {
2636: # Accessibility
2637:
2638: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2639: $forcereg).
2640: '<h1>LON-CAPA: '.$title.'</h1>';
2641: } elsif ($ENV{'environment.remote'} eq 'off') {
2642: # No Remote
2643: my $roleinfo=(<<ENDROLE);
2644: <td bgcolor="$tabbg" align="right">
2645: <font size="2" face="Arial, Helvetica, sans-serif">
2646: $ENV{'environment.firstname'}
2647: $ENV{'environment.middlename'}
2648: $ENV{'environment.lastname'}
2649: $ENV{'environment.generation'}
2650: </font>
2651: <br />
2652: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2653: <br />
2654: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2655: </td>
2656: ENDROLE
2657: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2658: $font.'"><b>'.$title.'</b></font>';
2659: if ($customtitle) {
2660: $titleinfo = $customtitle;
2661: }
2662:
2663: if ($ENV{'request.state'} eq 'construct') {
2664: my ($uname,$thisdisfn)=
2665: ($ENV{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2666: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2667: $formaction=~s/\/+/\//g;
2668: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2669: my $parentpath = '';
2670: my $lastitem = '';
2671: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2672: $parentpath = $1;
2673: $lastitem = $2;
2674: } else {
2675: $lastitem = $thisdisfn;
2676: }
2677: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2678: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2679: '<form name="dirs" method="post" action="'.$formaction
2680: .'" target="_top"><tt><b>'
2681: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2682: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2683: .'</form>'
2684: .&Apache::lonmenu::constspaceform();
2685:
2686: }
2687: $forcereg=1;
2688: }
2689: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2690: 'cellspacing="3" cellpadding="3">'.
2691: '<tr><td rowspan="3" bgcolor="'.$tabbg.'">'.
2692: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2693: if ($ENV{'request.state'} eq 'construct') {
2694: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2695: } else {
2696: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
2697: $titletable;
2698: }
2699: return $bodytag;
2700: }
2701:
2702: #
2703: # Top frame rendering, Remote is up
2704: #
2705: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2706: if ($customtitle) {
2707: $titleinfo = $customtitle;
2708: }
2709: return(<<ENDBODY);
2710: $bodytag
2711: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2712: <tr><td bgcolor="$sidebg">
2713: $upperleft</td>
2714: <td bgcolor="$sidebg" align="right">$messages </td>
2715: </tr>
2716: <tr>
2717: <td rowspan="3" bgcolor="$tabbg">
2718: $titleinfo
2719: <td bgcolor="$tabbg" align="right">
2720: <font size="2" face="Arial, Helvetica, sans-serif">
2721: $ENV{'environment.firstname'}
2722: $ENV{'environment.middlename'}
2723: $ENV{'environment.lastname'}
2724: $ENV{'environment.generation'}
2725: </font>
2726: </td>
2727: </tr>
2728: <tr><td bgcolor="$tabbg" align="right">
2729: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2730: </td></tr>
2731: <tr>
2732: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2733: </table><br />
2734: ENDBODY
2735: }
2736:
2737: ###############################################
2738:
2739: =pod
2740:
2741: =item get_users_function
2742:
2743: Used by &bodytag to determine the current users primary role.
2744: Returns either 'student','coordinator','admin', or 'author'.
2745:
2746: =cut
2747:
2748: ###############################################
2749: sub get_users_function {
2750: my $function = 'student';
2751: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2752: $function='coordinator';
2753: }
2754: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2755: $function='admin';
2756: }
2757: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2758: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2759: $function='author';
2760: }
2761: return $function;
2762: }
2763:
2764: ###############################################
2765:
2766: =pod
2767:
2768: =item get_sections
2769:
2770: Determines all the sections for a course including
2771: sections with students and sections containing other roles.
2772: Incoming parameters: domain, course number, reference to
2773: section hash (keys to be section/group IDs), reference to
2774: array containing roles for which sections should be gathered
2775: (optional). If the fourth argument is undefined, sections
2776: are gathered for any role.
2777:
2778: Returns number of sections.
2779:
2780: =cut
2781:
2782: ###############################################
2783: sub get_sections {
2784: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
2785: if (!($cdom && $cnum)) { return 0; }
2786: my $cid = $cdom.'_'.$cnum;
2787: my $numsections = 0;
2788:
2789: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
2790: my ($classlist) = &Apache::loncoursedata::get_classlist($cid,$cdom,$cnum);
2791: my $sec_index = &Apache::loncoursedata::CL_SECTION();
2792: my $status_index = &Apache::loncoursedata::CL_STATUS();
2793: while (my ($student,$data) = each %$classlist) {
2794: my ($section,$status) = ($data->[$sec_index],
2795: $data->[$status_index]);
2796: unless ($section eq '-1' || $section =~ /^\s*$/) {
2797: if (!defined($$sectioncount{$section})) { $numsections++; }
2798: $$sectioncount{$section}++;
2799: }
2800: }
2801: }
2802: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
2803: foreach my $user (sort(keys(%courseroles))) {
2804: if ($user !~ /^(\w{2})/) { next; }
2805: my ($role) = ($user =~ /^(\w{2})/);
2806: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
2807: my $section;
2808: if ($role eq 'cr' &&
2809: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
2810: $section=$1;
2811: }
2812: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
2813: if (!defined($section) || $section eq '-1') { next; }
2814: if (!defined($$sectioncount{$section})) { $numsections++; }
2815: $$sectioncount{$section}++;
2816: }
2817: return $numsections;
2818: }
2819:
2820:
2821: sub get_posted_cgi {
2822: my $r=shift;
2823:
2824: my $buffer;
2825:
2826: $r->read($buffer,$r->header_in('Content-length'),0);
2827: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2828: my @pairs=split(/&/,$buffer);
2829: my $pair;
2830: foreach $pair (@pairs) {
2831: my ($name,$value) = split(/=/,$pair);
2832: $value =~ tr/+/ /;
2833: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2834: $name =~ tr/+/ /;
2835: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2836: &add_to_env("form.$name",$value);
2837: }
2838: } else {
2839: my $contentsep=$1;
2840: my @lines = split (/\n/,$buffer);
2841: my $name='';
2842: my $value='';
2843: my $fname='';
2844: my $fmime='';
2845: my $i;
2846: for ($i=0;$i<=$#lines;$i++) {
2847: if ($lines[$i]=~/^$contentsep/) {
2848: if ($name) {
2849: chomp($value);
2850: if ($fname) {
2851: $ENV{"form.$name.filename"}=$fname;
2852: $ENV{"form.$name.mimetype"}=$fmime;
2853: } else {
2854: $value=~s/\s+$//s;
2855: }
2856: &add_to_env("form.$name",$value);
2857: }
2858: if ($i<$#lines) {
2859: $i++;
2860: $lines[$i]=~
2861: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2862: $name=$1;
2863: $value='';
2864: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2865: $fname=$1;
2866: if
2867: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2868: $fmime=$1;
2869: $i++;
2870: } else {
2871: $fmime='';
2872: }
2873: } else {
2874: $fname='';
2875: $fmime='';
2876: }
2877: $i++;
2878: }
2879: } else {
2880: $value.=$lines[$i]."\n";
2881: }
2882: }
2883: }
2884: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2885: $r->method_number(M_GET);
2886: $r->method('GET');
2887: $r->headers_in->unset('Content-length');
2888: }
2889:
2890: =pod
2891:
2892: =item * get_unprocessed_cgi($query,$possible_names)
2893:
2894: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2895: $query. The parameters listed in $possible_names (an array reference),
2896: will be set in $ENV{'form.name'} if they do not already exist.
2897:
2898: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2899: $possible_names is an ref to an array of form element names. As an example:
2900: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2901: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2902:
2903: =cut
2904:
2905: sub get_unprocessed_cgi {
2906: my ($query,$possible_names)= @_;
2907: # $Apache::lonxml::debug=1;
2908: foreach (split(/&/,$query)) {
2909: my ($name, $value) = split(/=/,$_);
2910: $name = &Apache::lonnet::unescape($name);
2911: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2912: $value =~ tr/+/ /;
2913: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2914: &Apache::lonxml::debug("Seting :$name: to :$value:");
2915: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2916: }
2917: }
2918: }
2919:
2920: =pod
2921:
2922: =item * cacheheader()
2923:
2924: returns cache-controlling header code
2925:
2926: =cut
2927:
2928: sub cacheheader {
2929: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2930: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2931: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2932: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2933: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2934: return $output;
2935: }
2936:
2937: =pod
2938:
2939: =item * no_cache($r)
2940:
2941: specifies header code to not have cache
2942:
2943: =cut
2944:
2945: sub no_cache {
2946: my ($r) = @_;
2947: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
2948: $ENV{'request.method'} ne 'GET') { return ''; }
2949: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
2950: $r->no_cache(1);
2951: $r->header_out("Expires" => $date);
2952: $r->header_out("Pragma" => "no-cache");
2953: }
2954:
2955: sub content_type {
2956: my ($r,$type,$charset) = @_;
2957: unless ($charset) {
2958: $charset=&Apache::lonlocal::current_encoding;
2959: }
2960: if ($charset) { $type.='; charset='.$charset; }
2961: if ($r) {
2962: $r->content_type($type);
2963: } else {
2964: print("Content-type: $type\n\n");
2965: }
2966: }
2967:
2968: =pod
2969:
2970: =item * add_to_env($name,$value)
2971:
2972: adds $name to the %ENV hash with value
2973: $value, if $name already exists, the entry is converted to an array
2974: reference and $value is added to the array.
2975:
2976: =cut
2977:
2978: sub add_to_env {
2979: my ($name,$value)=@_;
2980: if (defined($ENV{$name})) {
2981: if (ref($ENV{$name})) {
2982: #already have multiple values
2983: push(@{ $ENV{$name} },$value);
2984: } else {
2985: #first time seeing multiple values, convert hash entry to an arrayref
2986: my $first=$ENV{$name};
2987: undef($ENV{$name});
2988: push(@{ $ENV{$name} },$first,$value);
2989: }
2990: } else {
2991: $ENV{$name}=$value;
2992: }
2993: }
2994:
2995: =pod
2996:
2997: =item * get_env_multiple($name)
2998:
2999: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
3000: values may be defined and end up as an array ref.
3001:
3002: returns an array of values
3003:
3004: =cut
3005:
3006: sub get_env_multiple {
3007: my ($name) = @_;
3008: my @values;
3009: if (defined($ENV{$name})) {
3010: # exists is it an array
3011: if (ref($ENV{$name})) {
3012: @values=@{ $ENV{$name} };
3013: } else {
3014: $values[0]=$ENV{$name};
3015: }
3016: }
3017: return(@values);
3018: }
3019:
3020:
3021: =pod
3022:
3023: =back
3024:
3025: =head1 CSV Upload/Handling functions
3026:
3027: =over 4
3028:
3029: =item * upfile_store($r)
3030:
3031: Store uploaded file, $r should be the HTTP Request object,
3032: needs $ENV{'form.upfile'}
3033: returns $datatoken to be put into hidden field
3034:
3035: =cut
3036:
3037: sub upfile_store {
3038: my $r=shift;
3039: $ENV{'form.upfile'}=~s/\r/\n/gs;
3040: $ENV{'form.upfile'}=~s/\f/\n/gs;
3041: $ENV{'form.upfile'}=~s/\n+/\n/gs;
3042: $ENV{'form.upfile'}=~s/\n+$//gs;
3043:
3044: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
3045: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
3046: {
3047: my $datafile = $r->dir_config('lonDaemons').
3048: '/tmp/'.$datatoken.'.tmp';
3049: if ( open(my $fh,">$datafile") ) {
3050: print $fh $ENV{'form.upfile'};
3051: close($fh);
3052: }
3053: }
3054: return $datatoken;
3055: }
3056:
3057: =pod
3058:
3059: =item * load_tmp_file($r)
3060:
3061: Load uploaded file from tmp, $r should be the HTTP Request object,
3062: needs $ENV{'form.datatoken'},
3063: sets $ENV{'form.upfile'} to the contents of the file
3064:
3065: =cut
3066:
3067: sub load_tmp_file {
3068: my $r=shift;
3069: my @studentdata=();
3070: {
3071: my $studentfile = $r->dir_config('lonDaemons').
3072: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
3073: if ( open(my $fh,"<$studentfile") ) {
3074: @studentdata=<$fh>;
3075: close($fh);
3076: }
3077: }
3078: $ENV{'form.upfile'}=join('',@studentdata);
3079: }
3080:
3081: =pod
3082:
3083: =item * upfile_record_sep()
3084:
3085: Separate uploaded file into records
3086: returns array of records,
3087: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
3088:
3089: =cut
3090:
3091: sub upfile_record_sep {
3092: if ($ENV{'form.upfiletype'} eq 'xml') {
3093: } else {
3094: return split(/\n/,$ENV{'form.upfile'});
3095: }
3096: }
3097:
3098: =pod
3099:
3100: =item * record_sep($record)
3101:
3102: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
3103:
3104: =cut
3105:
3106: sub record_sep {
3107: my $record=shift;
3108: my %components=();
3109: if ($ENV{'form.upfiletype'} eq 'xml') {
3110: } elsif ($ENV{'form.upfiletype'} eq 'space') {
3111: my $i=0;
3112: foreach (split(/\s+/,$record)) {
3113: my $field=$_;
3114: $field=~s/^(\"|\')//;
3115: $field=~s/(\"|\')$//;
3116: $components{$i}=$field;
3117: $i++;
3118: }
3119: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
3120: my $i=0;
3121: foreach (split(/\t/,$record)) {
3122: my $field=$_;
3123: $field=~s/^(\"|\')//;
3124: $field=~s/(\"|\')$//;
3125: $components{$i}=$field;
3126: $i++;
3127: }
3128: } else {
3129: my @allfields=split(/\,/,$record);
3130: my $i=0;
3131: my $j;
3132: for ($j=0;$j<=$#allfields;$j++) {
3133: my $field=$allfields[$j];
3134: if ($field=~/^\s*(\"|\')/) {
3135: my $delimiter=$1;
3136: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
3137: $j++;
3138: $field.=','.$allfields[$j];
3139: }
3140: $field=~s/^\s*$delimiter//;
3141: $field=~s/$delimiter\s*$//;
3142: }
3143: $components{$i}=$field;
3144: $i++;
3145: }
3146: }
3147: return %components;
3148: }
3149:
3150: ######################################################
3151: ######################################################
3152:
3153: =pod
3154:
3155: =item * upfile_select_html()
3156:
3157: Return HTML code to select a file from the users machine and specify
3158: the file type.
3159:
3160: =cut
3161:
3162: ######################################################
3163: ######################################################
3164: sub upfile_select_html {
3165: my %Types = (
3166: csv => &mt('CSV (comma separated values, spreadsheet)'),
3167: space => &mt('Space separated'),
3168: tab => &mt('Tabulator separated'),
3169: # xml => &mt('HTML/XML'),
3170: );
3171: my $Str = '<input type="file" name="upfile" size="50" />'.
3172: '<br />Type: <select name="upfiletype">';
3173: foreach my $type (sort(keys(%Types))) {
3174: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3175: }
3176: $Str .= "</select>\n";
3177: return $Str;
3178: }
3179:
3180: ######################################################
3181: ######################################################
3182:
3183: =pod
3184:
3185: =item * csv_print_samples($r,$records)
3186:
3187: Prints a table of sample values from each column uploaded $r is an
3188: Apache Request ref, $records is an arrayref from
3189: &Apache::loncommon::upfile_record_sep
3190:
3191: =cut
3192:
3193: ######################################################
3194: ######################################################
3195: sub csv_print_samples {
3196: my ($r,$records) = @_;
3197: my (%sone,%stwo,%sthree);
3198: %sone=&record_sep($$records[0]);
3199: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3200: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3201: #
3202: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3203: foreach (sort({$a <=> $b} keys(%sone))) {
3204: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3205: $r->print('</tr>');
3206: foreach my $hash (\%sone,\%stwo,\%sthree) {
3207: $r->print('<tr>');
3208: foreach (sort({$a <=> $b} keys(%sone))) {
3209: $r->print('<td>');
3210: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3211: $r->print('</td>');
3212: }
3213: $r->print('</tr>');
3214: }
3215: $r->print('</tr></table><br />'."\n");
3216: }
3217:
3218: ######################################################
3219: ######################################################
3220:
3221: =pod
3222:
3223: =item * csv_print_select_table($r,$records,$d)
3224:
3225: Prints a table to create associations between values and table columns.
3226:
3227: $r is an Apache Request ref,
3228: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3229: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3230:
3231: =cut
3232:
3233: ######################################################
3234: ######################################################
3235: sub csv_print_select_table {
3236: my ($r,$records,$d) = @_;
3237: my $i=0;my %sone;
3238: %sone=&record_sep($$records[0]);
3239: $r->print(&mt('Associate columns with student attributes.')."\n".
3240: '<table border="2"><tr>'.
3241: '<th>'.&mt('Attribute').'</th>'.
3242: '<th>'.&mt('Column').'</th></tr>'."\n");
3243: foreach (@$d) {
3244: my ($value,$display,$defaultcol)=@{ $_ };
3245: $r->print('<tr><td>'.$display.'</td>');
3246:
3247: $r->print('<td><select name=f'.$i.
3248: ' onchange="javascript:flip(this.form,'.$i.');">');
3249: $r->print('<option value="none"></option>');
3250: foreach (sort({$a <=> $b} keys(%sone))) {
3251: $r->print('<option value="'.$_.'"'.
3252: ($_ eq $defaultcol ? ' selected ' : '').
3253: '>Column '.($_+1).'</option>');
3254: }
3255: $r->print('</select></td></tr>'."\n");
3256: $i++;
3257: }
3258: $i--;
3259: return $i;
3260: }
3261:
3262: ######################################################
3263: ######################################################
3264:
3265: =pod
3266:
3267: =item * csv_samples_select_table($r,$records,$d)
3268:
3269: Prints a table of sample values from the upload and can make associate samples to internal names.
3270:
3271: $r is an Apache Request ref,
3272: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3273: $d is an array of 2 element arrays (internal name, displayed name)
3274:
3275: =cut
3276:
3277: ######################################################
3278: ######################################################
3279: sub csv_samples_select_table {
3280: my ($r,$records,$d) = @_;
3281: my %sone; my %stwo; my %sthree;
3282: my $i=0;
3283: #
3284: $r->print('<table border=2><tr><th>'.
3285: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3286: %sone=&record_sep($$records[0]);
3287: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3288: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3289: #
3290: foreach (sort keys %sone) {
3291: $r->print('<tr><td><select name="f'.$i.'"'.
3292: ' onchange="javascript:flip(this.form,'.$i.');">');
3293: foreach (@$d) {
3294: my ($value,$display,$defaultcol)=@{ $_ };
3295: $r->print('<option value="'.$value.'"'.
3296: ($i eq $defaultcol ? ' selected ':'').'>'.
3297: $display.'</option>');
3298: }
3299: $r->print('</select></td><td>');
3300: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3301: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3302: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3303: $r->print('</td></tr>');
3304: $i++;
3305: }
3306: $i--;
3307: return($i);
3308: }
3309:
3310: ######################################################
3311: ######################################################
3312:
3313: =pod
3314:
3315: =item clean_excel_name($name)
3316:
3317: Returns a replacement for $name which does not contain any illegal characters.
3318:
3319: =cut
3320:
3321: ######################################################
3322: ######################################################
3323: sub clean_excel_name {
3324: my ($name) = @_;
3325: $name =~ s/[:\*\?\/\\]//g;
3326: if (length($name) > 31) {
3327: $name = substr($name,0,31);
3328: }
3329: return $name;
3330: }
3331:
3332: =pod
3333:
3334: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3335:
3336: Returns either 1 or undef
3337:
3338: 1 if the part is to be hidden, undef if it is to be shown
3339:
3340: Arguments are:
3341:
3342: $id the id of the part to be checked
3343: $symb, optional the symb of the resource to check
3344: $udom, optional the domain of the user to check for
3345: $uname, optional the username of the user to check for
3346:
3347: =cut
3348:
3349: sub check_if_partid_hidden {
3350: my ($id,$symb,$udom,$uname) = @_;
3351: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3352: $symb,$udom,$uname);
3353: my $truth=1;
3354: #if the string starts with !, then the list is the list to show not hide
3355: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3356: my @hiddenlist=split(/,/,$hiddenparts);
3357: foreach my $checkid (@hiddenlist) {
3358: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3359: }
3360: return !$truth;
3361: }
3362:
3363:
3364: ############################################################
3365: ############################################################
3366:
3367: =pod
3368:
3369: =back
3370:
3371: =head1 cgi-bin script and graphing routines
3372:
3373: =over 4
3374:
3375: =item get_cgi_id
3376:
3377: Inputs: none
3378:
3379: Returns an id which can be used to pass environment variables
3380: to various cgi-bin scripts. These environment variables will
3381: be removed from the users environment after a given time by
3382: the routine &Apache::lonnet::transfer_profile_to_env.
3383:
3384: =cut
3385:
3386: ############################################################
3387: ############################################################
3388: my $uniq=0;
3389: sub get_cgi_id {
3390: $uniq=($uniq+1)%100000;
3391: return (time.'_'.$uniq);
3392: }
3393:
3394: ############################################################
3395: ############################################################
3396:
3397: =pod
3398:
3399: =item DrawBarGraph
3400:
3401: Facilitates the plotting of data in a (stacked) bar graph.
3402: Puts plot definition data into the users environment in order for
3403: graph.png to plot it. Returns an <img> tag for the plot.
3404: The bars on the plot are labeled '1','2',...,'n'.
3405:
3406: Inputs:
3407:
3408: =over 4
3409:
3410: =item $Title: string, the title of the plot
3411:
3412: =item $xlabel: string, text describing the X-axis of the plot
3413:
3414: =item $ylabel: string, text describing the Y-axis of the plot
3415:
3416: =item $Max: scalar, the maximum Y value to use in the plot
3417: If $Max is < any data point, the graph will not be rendered.
3418:
3419: =item $colors: array ref holding the colors to be used for the data sets when
3420: they are plotted. If undefined, default values will be used.
3421:
3422: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3423:
3424: =item @Values: An array of array references. Each array reference holds data
3425: to be plotted in a stacked bar chart.
3426:
3427: =item If the final element of @Values is a hash reference the key/value
3428: pairs will be added to the graph definition.
3429:
3430: =back
3431:
3432: Returns:
3433:
3434: An <img> tag which references graph.png and the appropriate identifying
3435: information for the plot.
3436:
3437: =cut
3438:
3439: ############################################################
3440: ############################################################
3441: sub DrawBarGraph {
3442: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3443: #
3444: if (! defined($colors)) {
3445: $colors = ['#33ff00',
3446: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3447: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3448: ];
3449: }
3450: my $extra_settings = {};
3451: if (ref($Values[-1]) eq 'HASH') {
3452: $extra_settings = pop(@Values);
3453: }
3454: #
3455: my $identifier = &get_cgi_id();
3456: my $id = 'cgi.'.$identifier;
3457: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3458: return '';
3459: }
3460: #
3461: my @Labels;
3462: if (defined($labels)) {
3463: @Labels = @$labels;
3464: } else {
3465: for (my $i=0;$i<@{$Values[0]};$i++) {
3466: push (@Labels,$i+1);
3467: }
3468: }
3469: #
3470: my $NumBars = scalar(@{$Values[0]});
3471: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
3472: my %ValuesHash;
3473: my $NumSets=1;
3474: foreach my $array (@Values) {
3475: next if (! ref($array));
3476: $ValuesHash{$id.'.data.'.$NumSets++} =
3477: join(',',@$array);
3478: }
3479: #
3480: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3481: if ($NumBars < 3) {
3482: $width = 120+$NumBars*32;
3483: $xskip = 1;
3484: $bar_width = 30;
3485: } elsif ($NumBars < 5) {
3486: $width = 120+$NumBars*20;
3487: $xskip = 1;
3488: $bar_width = 20;
3489: } elsif ($NumBars < 10) {
3490: $width = 120+$NumBars*15;
3491: $xskip = 1;
3492: $bar_width = 15;
3493: } elsif ($NumBars <= 25) {
3494: $width = 120+$NumBars*11;
3495: $xskip = 5;
3496: $bar_width = 8;
3497: } elsif ($NumBars <= 50) {
3498: $width = 120+$NumBars*8;
3499: $xskip = 5;
3500: $bar_width = 4;
3501: } else {
3502: $width = 120+$NumBars*8;
3503: $xskip = 5;
3504: $bar_width = 4;
3505: }
3506: #
3507: $Max = 1 if ($Max < 1);
3508: if ( int($Max) < $Max ) {
3509: $Max++;
3510: $Max = int($Max);
3511: }
3512: $Title = '' if (! defined($Title));
3513: $xlabel = '' if (! defined($xlabel));
3514: $ylabel = '' if (! defined($ylabel));
3515: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3516: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3517: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3518: $ValuesHash{$id.'.y_max_value'} = $Max;
3519: $ValuesHash{$id.'.NumBars'} = $NumBars;
3520: $ValuesHash{$id.'.NumSets'} = $NumSets;
3521: $ValuesHash{$id.'.PlotType'} = 'bar';
3522: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3523: $ValuesHash{$id.'.height'} = $height;
3524: $ValuesHash{$id.'.width'} = $width;
3525: $ValuesHash{$id.'.xskip'} = $xskip;
3526: $ValuesHash{$id.'.bar_width'} = $bar_width;
3527: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3528: #
3529: # Deal with other parameters
3530: while (my ($key,$value) = each(%$extra_settings)) {
3531: $ValuesHash{$id.'.'.$key} = $value;
3532: }
3533: #
3534: &Apache::lonnet::appenv(%ValuesHash);
3535: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3536: }
3537:
3538: ############################################################
3539: ############################################################
3540:
3541: =pod
3542:
3543: =item DrawXYGraph
3544:
3545: Facilitates the plotting of data in an XY graph.
3546: Puts plot definition data into the users environment in order for
3547: graph.png to plot it. Returns an <img> tag for the plot.
3548:
3549: Inputs:
3550:
3551: =over 4
3552:
3553: =item $Title: string, the title of the plot
3554:
3555: =item $xlabel: string, text describing the X-axis of the plot
3556:
3557: =item $ylabel: string, text describing the Y-axis of the plot
3558:
3559: =item $Max: scalar, the maximum Y value to use in the plot
3560: If $Max is < any data point, the graph will not be rendered.
3561:
3562: =item $colors: Array ref containing the hex color codes for the data to be
3563: plotted in. If undefined, default values will be used.
3564:
3565: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3566:
3567: =item $Ydata: Array ref containing Array refs.
3568: Each of the contained arrays will be plotted as a separate curve.
3569:
3570: =item %Values: hash indicating or overriding any default values which are
3571: passed to graph.png.
3572: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3573:
3574: =back
3575:
3576: Returns:
3577:
3578: An <img> tag which references graph.png and the appropriate identifying
3579: information for the plot.
3580:
3581: =cut
3582:
3583: ############################################################
3584: ############################################################
3585: sub DrawXYGraph {
3586: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3587: #
3588: # Create the identifier for the graph
3589: my $identifier = &get_cgi_id();
3590: my $id = 'cgi.'.$identifier;
3591: #
3592: $Title = '' if (! defined($Title));
3593: $xlabel = '' if (! defined($xlabel));
3594: $ylabel = '' if (! defined($ylabel));
3595: my %ValuesHash =
3596: (
3597: $id.'.title' => &Apache::lonnet::escape($Title),
3598: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3599: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3600: $id.'.y_max_value'=> $Max,
3601: $id.'.labels' => join(',',@$Xlabels),
3602: $id.'.PlotType' => 'XY',
3603: );
3604: #
3605: if (defined($colors) && ref($colors) eq 'ARRAY') {
3606: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3607: }
3608: #
3609: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3610: return '';
3611: }
3612: my $NumSets=1;
3613: foreach my $array (@{$Ydata}){
3614: next if (! ref($array));
3615: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3616: }
3617: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3618: #
3619: # Deal with other parameters
3620: while (my ($key,$value) = each(%Values)) {
3621: $ValuesHash{$id.'.'.$key} = $value;
3622: }
3623: #
3624: &Apache::lonnet::appenv(%ValuesHash);
3625: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3626: }
3627:
3628: ############################################################
3629: ############################################################
3630:
3631: =pod
3632:
3633: =item DrawXYYGraph
3634:
3635: Facilitates the plotting of data in an XY graph with two Y axes.
3636: Puts plot definition data into the users environment in order for
3637: graph.png to plot it. Returns an <img> tag for the plot.
3638:
3639: Inputs:
3640:
3641: =over 4
3642:
3643: =item $Title: string, the title of the plot
3644:
3645: =item $xlabel: string, text describing the X-axis of the plot
3646:
3647: =item $ylabel: string, text describing the Y-axis of the plot
3648:
3649: =item $colors: Array ref containing the hex color codes for the data to be
3650: plotted in. If undefined, default values will be used.
3651:
3652: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3653:
3654: =item $Ydata1: The first data set
3655:
3656: =item $Min1: The minimum value of the left Y-axis
3657:
3658: =item $Max1: The maximum value of the left Y-axis
3659:
3660: =item $Ydata2: The second data set
3661:
3662: =item $Min2: The minimum value of the right Y-axis
3663:
3664: =item $Max2: The maximum value of the left Y-axis
3665:
3666: =item %Values: hash indicating or overriding any default values which are
3667: passed to graph.png.
3668: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3669:
3670: =back
3671:
3672: Returns:
3673:
3674: An <img> tag which references graph.png and the appropriate identifying
3675: information for the plot.
3676:
3677: =cut
3678:
3679: ############################################################
3680: ############################################################
3681: sub DrawXYYGraph {
3682: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3683: $Ydata2,$Min2,$Max2,%Values)=@_;
3684: #
3685: # Create the identifier for the graph
3686: my $identifier = &get_cgi_id();
3687: my $id = 'cgi.'.$identifier;
3688: #
3689: $Title = '' if (! defined($Title));
3690: $xlabel = '' if (! defined($xlabel));
3691: $ylabel = '' if (! defined($ylabel));
3692: my %ValuesHash =
3693: (
3694: $id.'.title' => &Apache::lonnet::escape($Title),
3695: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3696: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3697: $id.'.labels' => join(',',@$Xlabels),
3698: $id.'.PlotType' => 'XY',
3699: $id.'.NumSets' => 2,
3700: $id.'.two_axes' => 1,
3701: $id.'.y1_max_value' => $Max1,
3702: $id.'.y1_min_value' => $Min1,
3703: $id.'.y2_max_value' => $Max2,
3704: $id.'.y2_min_value' => $Min2,
3705: );
3706: #
3707: if (defined($colors) && ref($colors) eq 'ARRAY') {
3708: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3709: }
3710: #
3711: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3712: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3713: return '';
3714: }
3715: my $NumSets=1;
3716: foreach my $array ($Ydata1,$Ydata2){
3717: next if (! ref($array));
3718: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3719: }
3720: #
3721: # Deal with other parameters
3722: while (my ($key,$value) = each(%Values)) {
3723: $ValuesHash{$id.'.'.$key} = $value;
3724: }
3725: #
3726: &Apache::lonnet::appenv(%ValuesHash);
3727: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3728: }
3729:
3730: ############################################################
3731: ############################################################
3732:
3733: =pod
3734:
3735: =back
3736:
3737: =head1 Statistics helper routines?
3738:
3739: Bad place for them but what the hell.
3740:
3741: =over 4
3742:
3743: =item &chartlink
3744:
3745: Returns a link to the chart for a specific student.
3746:
3747: Inputs:
3748:
3749: =over 4
3750:
3751: =item $linktext: The text of the link
3752:
3753: =item $sname: The students username
3754:
3755: =item $sdomain: The students domain
3756:
3757: =back
3758:
3759: =back
3760:
3761: =cut
3762:
3763: ############################################################
3764: ############################################################
3765: sub chartlink {
3766: my ($linktext, $sname, $sdomain) = @_;
3767: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3768: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3769: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3770: '">'.$linktext.'</a>';
3771: }
3772:
3773: #######################################################
3774: #######################################################
3775:
3776: =pod
3777:
3778: =head1 Course Environment Routines
3779:
3780: =over 4
3781:
3782: =item &restore_course_settings
3783:
3784: =item &store_course_settings
3785:
3786: Restores/Store indicated form parameters from the course environment.
3787: Will not overwrite existing values of the form parameters.
3788:
3789: Inputs:
3790: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3791:
3792: a hash ref describing the data to be stored. For example:
3793:
3794: %Save_Parameters = ('Status' => 'scalar',
3795: 'chartoutputmode' => 'scalar',
3796: 'chartoutputdata' => 'scalar',
3797: 'Section' => 'array',
3798: 'StudentData' => 'array',
3799: 'Maps' => 'array');
3800:
3801: Returns: both routines return nothing
3802:
3803: =cut
3804:
3805: #######################################################
3806: #######################################################
3807: sub store_course_settings {
3808: # save to the environment
3809: # appenv the same items, just to be safe
3810: my $courseid = $ENV{'request.course.id'};
3811: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3812: my ($prefix,$Settings) = @_;
3813: my %SaveHash;
3814: my %AppHash;
3815: while (my ($setting,$type) = each(%$Settings)) {
3816: my $basename = 'internal.'.$prefix.'.'.$setting;
3817: my $envname = 'course.'.$courseid.'.'.$basename;
3818: if (exists($ENV{'form.'.$setting})) {
3819: # Save this value away
3820: if ($type eq 'scalar' &&
3821: (! exists($ENV{$envname}) ||
3822: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3823: $SaveHash{$basename} = $ENV{'form.'.$setting};
3824: $AppHash{$envname} = $ENV{'form.'.$setting};
3825: } elsif ($type eq 'array') {
3826: my $stored_form;
3827: if (ref($ENV{'form.'.$setting})) {
3828: $stored_form = join(',',
3829: map {
3830: &Apache::lonnet::escape($_);
3831: } sort(@{$ENV{'form.'.$setting}}));
3832: } else {
3833: $stored_form =
3834: &Apache::lonnet::escape($ENV{'form.'.$setting});
3835: }
3836: # Determine if the array contents are the same.
3837: if ($stored_form ne $ENV{$envname}) {
3838: $SaveHash{$basename} = $stored_form;
3839: $AppHash{$envname} = $stored_form;
3840: }
3841: }
3842: }
3843: }
3844: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3845: $coursedom,
3846: $ENV{'course.'.$courseid.'.num'});
3847: if ($put_result !~ /^(ok|delayed)/) {
3848: &Apache::lonnet::logthis('unable to save form parameters, '.
3849: 'got error:'.$put_result);
3850: }
3851: # Make sure these settings stick around in this session, too
3852: &Apache::lonnet::appenv(%AppHash);
3853: return;
3854: }
3855:
3856: sub restore_course_settings {
3857: my $courseid = $ENV{'request.course.id'};
3858: my ($prefix,$Settings) = @_;
3859: while (my ($setting,$type) = each(%$Settings)) {
3860: next if (exists($ENV{'form.'.$setting}));
3861: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3862: '.'.$setting;
3863: if (exists($ENV{$envname})) {
3864: if ($type eq 'scalar') {
3865: $ENV{'form.'.$setting} = $ENV{$envname};
3866: } elsif ($type eq 'array') {
3867: $ENV{'form.'.$setting} = [
3868: map {
3869: &Apache::lonnet::unescape($_);
3870: } split(',',$ENV{$envname})
3871: ];
3872: }
3873: }
3874: }
3875: }
3876:
3877: ############################################################
3878: ############################################################
3879:
3880: sub propath {
3881: my ($udom,$uname)=@_;
3882: $udom=~s/\W//g;
3883: $uname=~s/\W//g;
3884: my $subdir=$uname.'__';
3885: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3886: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3887: return $proname;
3888: }
3889:
3890: sub icon {
3891: my ($file)=@_;
3892: my $curfext = (split(/\./,$file))[-1];
3893: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3894: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3895: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3896: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3897: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3898: $curfext.".gif") {
3899: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3900: $curfext.".gif";
3901: }
3902: }
3903: return $iconname;
3904: }
3905:
3906: sub lonhttpdurl {
3907: my ($url)=@_;
3908: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
3909: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
3910: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
3911: }
3912:
3913: sub connection_aborted {
3914: my ($r)=@_;
3915: $r->print(" ");$r->rflush();
3916: my $c = $r->connection;
3917: return $c->aborted();
3918: }
3919:
3920: # Escapes strings that may have embedded 's that will be put into
3921: # strings as 'strings'.
3922: sub escape_single {
3923: my ($input) = @_;
3924: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
3925: $input =~ s/\'/\\\'/g; # Esacpe the 's....
3926: return $input;
3927: }
3928:
3929: # Same as escape_single, but escape's "'s This
3930: # can be used for "strings"
3931: sub escape_double {
3932: my ($input) = @_;
3933: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
3934: $input =~ s/\"/\\\"/g; # Esacpe the "s....
3935: return $input;
3936: }
3937:
3938: # Escapes the last element of a full URL.
3939: sub escape_url {
3940: my ($url) = @_;
3941: my @urlslices = split(/\//, $url,-1);
3942: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
3943: return join('/',@urlslices).'/'.$lastitem;
3944: }
3945: =pod
3946:
3947: =back
3948:
3949: =cut
3950:
3951: 1;
3952: __END__;
3953:
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