Annotation of loncom/interface/loncommon.pm, revision 1.67
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.67 ! www 4: # $Id: loncommon.pm,v 1.66 2002/09/13 19:32:09 www Exp $
1.10 albertel 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: #
1.12 harris41 28: # YEAR=2001
29: # 2/13-12/7 Guy Albertelli
1.17 harris41 30: # 12/11,12/12,12/17 Scott Harrison
1.18 www 31: # 12/21 Gerd Kortemeyer
1.20 www 32: # 12/21 Scott Harrison
1.22 www 33: # 12/25,12/28 Gerd Kortemeyer
1.23 www 34: # YEAR=2002
35: # 1/4 Gerd Kortemeyer
1.43 ng 36: # 6/24,7/2 H. K. Ng
1.1 albertel 37:
38: # Makes a table out of the previous attempts
1.2 albertel 39: # Inputs result_from_symbread, user, domain, course_id
1.16 harris41 40: # Reads in non-network-related .tab files
1.1 albertel 41:
1.35 matthew 42: # POD header:
43:
1.45 matthew 44: =pod
45:
1.35 matthew 46: =head1 NAME
47:
48: Apache::loncommon - pile of common routines
49:
50: =head1 SYNOPSIS
51:
52: Referenced by other mod_perl Apache modules.
53:
54: Invocation:
55: &Apache::loncommon::SUBROUTINENAME(ARGUMENTS);
56:
57: =head1 INTRODUCTION
58:
59: Common collection of used subroutines. This collection helps remove
60: redundancy from other modules and increase efficiency of memory usage.
61:
62: Current things done:
63:
64: Makes a table out of the previous homework attempts
65: Inputs result_from_symbread, user, domain, course_id
66: Reads in non-network-related .tab files
67:
68: This is part of the LearningOnline Network with CAPA project
69: described at http://www.lon-capa.org.
70:
1.41 ng 71: =head2 General Subroutines
1.35 matthew 72:
73: =over 4
74:
75: =cut
76:
77: # End of POD header
1.1 albertel 78: package Apache::loncommon;
79:
80: use strict;
1.22 www 81: use Apache::lonnet();
1.46 matthew 82: use GDBM_File;
1.51 www 83: use POSIX qw(strftime mktime);
1.1 albertel 84: use Apache::Constants qw(:common);
85: use Apache::lonmsg();
1.22 www 86: my $readit;
87:
1.46 matthew 88: =pod
89:
90: =item Global Variables
91:
92: =over 4
93:
94: =cut
1.20 www 95: # ----------------------------------------------- Filetypes/Languages/Copyright
1.12 harris41 96: my %language;
97: my %cprtag;
98: my %fe; my %fd;
1.41 ng 99: my %category_extensions;
1.12 harris41 100:
1.63 www 101: # ---------------------------------------------- Designs
102:
103: my %designhash;
104:
1.46 matthew 105: # ---------------------------------------------- Thesaurus variables
106:
107: =pod
108:
109: =item %Keywords
110:
111: A hash used by &keyword to determine if a word is considered a keyword.
112:
113: =item $thesaurus_db_file
114:
115: Scalar containing the full path to the thesaurus database.
116:
117: =cut
118:
119: my %Keywords;
120: my $thesaurus_db_file;
121:
122:
123: =pod
124:
125: =back
126:
127: =cut
1.20 www 128:
1.12 harris41 129: # ----------------------------------------------------------------------- BEGIN
1.41 ng 130:
131: =pod
132:
1.35 matthew 133: =item BEGIN()
134:
135: Initialize values from language.tab, copyright.tab, filetypes.tab,
1.45 matthew 136: thesaurus.tab, and filecategories.tab.
1.35 matthew 137:
138: =cut
1.45 matthew 139:
1.35 matthew 140: # ----------------------------------------------------------------------- BEGIN
141:
1.18 www 142: BEGIN {
1.46 matthew 143: # Variable initialization
144: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
145: #
1.22 www 146: unless ($readit) {
1.12 harris41 147: # ------------------------------------------------------------------- languages
148: {
149: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
150: '/language.tab');
1.16 harris41 151: if ($fh) {
152: while (<$fh>) {
153: next if /^\#/;
154: chomp;
155: my ($key,$val)=(split(/\s+/,$_,2));
156: $language{$key}=$val;
157: }
1.12 harris41 158: }
159: }
160: # ------------------------------------------------------------------ copyrights
161: {
1.16 harris41 162: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonIncludes'}.
163: '/copyright.tab');
164: if ($fh) {
165: while (<$fh>) {
166: next if /^\#/;
167: chomp;
168: my ($key,$val)=(split(/\s+/,$_,2));
169: $cprtag{$key}=$val;
170: }
1.12 harris41 171: }
172: }
1.63 www 173:
174: # -------------------------------------------------------------- domain designs
175:
176: my $filename;
177: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
178: opendir(DIR,$designdir);
179: while ($filename=readdir(DIR)) {
180: my ($domain)=($filename=~/^(\w+)\./);
181: {
182: my $fh=Apache::File->new($designdir.'/'.$filename);
183: if ($fh) {
184: while (<$fh>) {
185: next if /^\#/;
186: chomp;
187: my ($key,$val)=(split(/\=/,$_));
188: if ($val) { $designhash{$domain.'.'.$key}=$val; }
189: }
190: }
191: }
192:
193: }
194: closedir(DIR);
195:
196:
1.15 harris41 197: # ------------------------------------------------------------- file categories
198: {
199: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
1.16 harris41 200: '/filecategories.tab');
201: if ($fh) {
202: while (<$fh>) {
203: next if /^\#/;
204: chomp;
1.41 ng 205: my ($extension,$category)=(split(/\s+/,$_,2));
206: push @{$category_extensions{lc($category)}},$extension;
1.16 harris41 207: }
1.15 harris41 208: }
209: }
1.12 harris41 210: # ------------------------------------------------------------------ file types
211: {
1.16 harris41 212: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
213: '/filetypes.tab');
214: if ($fh) {
215: while (<$fh>) {
216: next if (/^\#/);
217: chomp;
218: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
219: if ($descr ne '') {
220: $fe{$ending}=lc($emb);
221: $fd{$ending}=$descr;
222: }
1.12 harris41 223: }
224: }
225: }
1.22 www 226: &Apache::lonnet::logthis(
1.46 matthew 227: "<font color=yellow>INFO: Read file types</font>");
1.22 www 228: $readit=1;
1.46 matthew 229: } # end of unless($readit)
1.32 matthew 230:
231: }
232: # ============================================================= END BEGIN BLOCK
1.42 matthew 233: ###############################################################
234: ## HTML and Javascript Helper Functions ##
235: ###############################################################
236:
237: =pod
238:
239: =item browser_and_searcher_javascript
240:
241: Returns scalar containing javascript to open a browser window
242: or a searcher window. Also creates
243:
244: =over 4
245:
246: =item openbrowser(formname,elementname,only,omit) [javascript]
247:
248: inputs: formname, elementname, only, omit
249:
250: formname and elementname indicate the name of the html form and name of
251: the element that the results of the browsing selection are to be placed in.
252:
253: Specifying 'only' will restrict the browser to displaying only files
254: with the given extension. Can be a comma seperated list.
255:
256: Specifying 'omit' will restrict the browser to NOT displaying files
257: with the given extension. Can be a comma seperated list.
258:
259: =item opensearcher(formname, elementname) [javascript]
260:
261: Inputs: formname, elementname
262:
263: formname and elementname specify the name of the html form and the name
264: of the element the selection from the search results will be placed in.
265:
266: =back
267:
268: =cut
269:
270: ###############################################################
271: sub browser_and_searcher_javascript {
272: return <<END;
1.50 matthew 273: var editbrowser = null;
1.42 matthew 274: function openbrowser(formname,elementname,only,omit) {
275: var url = '/res/?';
276: if (editbrowser == null) {
277: url += 'launch=1&';
278: }
279: url += 'catalogmode=interactive&';
280: url += 'mode=edit&';
281: url += 'form=' + formname + '&';
282: if (only != null) {
283: url += 'only=' + only + '&';
284: }
285: if (omit != null) {
286: url += 'omit=' + omit + '&';
287: }
288: url += 'element=' + elementname + '';
289: var title = 'Browser';
290: var options = 'scrollbars=1,resizable=1,menubar=0';
291: options += ',width=700,height=600';
292: editbrowser = open(url,title,options,'1');
293: editbrowser.focus();
294: }
295: var editsearcher;
296: function opensearcher(formname,elementname) {
297: var url = '/adm/searchcat?';
298: if (editsearcher == null) {
299: url += 'launch=1&';
300: }
301: url += 'catalogmode=interactive&';
302: url += 'mode=edit&';
303: url += 'form=' + formname + '&';
304: url += 'element=' + elementname + '';
305: var title = 'Search';
306: var options = 'scrollbars=1,resizable=1,menubar=0';
307: options += ',width=700,height=600';
308: editsearcher = open(url,title,options,'1');
309: editsearcher.focus();
310: }
311: END
312: }
313:
314:
315:
316: ###############################################################
317:
318: =pod
1.36 matthew 319:
320: =item linked_select_forms(...)
321:
322: linked_select_forms returns a string containing a <script></script> block
323: and html for two <select> menus. The select menus will be linked in that
324: changing the value of the first menu will result in new values being placed
325: in the second menu. The values in the select menu will appear in alphabetical
326: order.
327:
328: linked_select_forms takes the following ordered inputs:
329:
330: =over 4
331:
332: =item $formname, the name of the <form> tag
333:
334: =item $middletext, the text which appears between the <select> tags
335:
336: =item $firstdefault, the default value for the first menu
337:
338: =item $firstselectname, the name of the first <select> tag
339:
340: =item $secondselectname, the name of the second <select> tag
341:
342: =item $hashref, a reference to a hash containing the data for the menus.
343:
1.41 ng 344: =back
345:
1.36 matthew 346: Below is an example of such a hash. Only the 'text', 'default', and
347: 'select2' keys must appear as stated. keys(%menu) are the possible
348: values for the first select menu. The text that coincides with the
1.41 ng 349: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 350: and text for the second menu are given in the hash pointed to by
351: $menu{$choice1}->{'select2'}.
352:
1.41 ng 353: my %menu = ( A1 => { text =>"Choice A1" ,
1.36 matthew 354: default => "B3",
355: select2 => {
356: B1 => "Choice B1",
357: B2 => "Choice B2",
358: B3 => "Choice B3",
359: B4 => "Choice B4"
360: }
361: },
362: A2 => { text =>"Choice A2" ,
363: default => "C2",
364: select2 => {
365: C1 => "Choice C1",
366: C2 => "Choice C2",
367: C3 => "Choice C3"
368: }
369: },
370: A3 => { text =>"Choice A3" ,
371: default => "D6",
372: select2 => {
373: D1 => "Choice D1",
374: D2 => "Choice D2",
375: D3 => "Choice D3",
376: D4 => "Choice D4",
377: D5 => "Choice D5",
378: D6 => "Choice D6",
379: D7 => "Choice D7"
380: }
381: }
382: );
383:
384: =cut
385:
386: # ------------------------------------------------
387:
388: sub linked_select_forms {
389: my ($formname,
390: $middletext,
391: $firstdefault,
392: $firstselectname,
393: $secondselectname,
394: $hashref
395: ) = @_;
396: my $second = "document.$formname.$secondselectname";
397: my $first = "document.$formname.$firstselectname";
398: # output the javascript to do the changing
399: my $result = '';
400: $result.="<script>\n";
401: $result.="var select2data = new Object();\n";
402: $" = '","';
403: my $debug = '';
404: foreach my $s1 (sort(keys(%$hashref))) {
405: $result.="select2data.d_$s1 = new Object();\n";
406: $result.="select2data.d_$s1.def = new String('".
407: $hashref->{$s1}->{'default'}."');\n";
408: $result.="select2data.d_$s1.values = new Array(";
409: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
410: $result.="\"@s2values\");\n";
411: $result.="select2data.d_$s1.texts = new Array(";
412: my @s2texts;
413: foreach my $value (@s2values) {
414: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
415: }
416: $result.="\"@s2texts\");\n";
417: }
418: $"=' ';
419: $result.= <<"END";
420:
421: function select1_changed() {
422: // Determine new choice
423: var newvalue = "d_" + $first.value;
424: // update select2
425: var values = select2data[newvalue].values;
426: var texts = select2data[newvalue].texts;
427: var select2def = select2data[newvalue].def;
428: var i;
429: // out with the old
430: for (i = 0; i < $second.options.length; i++) {
431: $second.options[i] = null;
432: }
433: // in with the nuclear
434: for (i=0;i<values.length; i++) {
435: $second.options[i] = new Option(values[i]);
436: $second.options[i].text = texts[i];
437: if (values[i] == select2def) {
438: $second.options[i].selected = true;
439: }
440: }
441: }
442: </script>
443: END
444: # output the initial values for the selection lists
445: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
446: foreach my $value (sort(keys(%$hashref))) {
447: $result.=" <option value=\"$value\" ";
448: $result.=" selected=\"true\" " if ($value eq $firstdefault);
449: $result.=">$hashref->{$value}->{'text'}</option>\n";
450: }
451: $result .= "</select>\n";
452: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
453: $result .= $middletext;
454: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
455: my $seconddefault = $hashref->{$firstdefault}->{'default'};
456: foreach my $value (sort(keys(%select2))) {
457: $result.=" <option value=\"$value\" ";
458: $result.=" selected=\"true\" " if ($value eq $seconddefault);
459: $result.=">$select2{$value}</option>\n";
460: }
461: $result .= "</select>\n";
462: # return $debug;
463: return $result;
464: } # end of sub linked_select_forms {
465:
1.33 matthew 466: ###############################################################
1.44 bowersj2 467:
1.45 matthew 468: =pod
1.44 bowersj2 469:
1.48 bowersj2 470: =item help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 471:
472: Returns a string corresponding to an HTML link to the given help $topic, where $topic corresponds to the name of a .tex file in /home/httpd/html/adm/help/tex, with underscores replaced by spaces.
473:
1.48 bowersj2 474: $text will optionally be linked to the same topic, allowing you to link text in addition to the graphic. If you do not want to link text, but wish to specify one of the later parameters, pass an empty string.
475:
1.44 bowersj2 476: $stayOnPage is a value that will be interpreted as a boolean. If true, the link will not open a new window. If false, the link will open a new window using Javascript. (Default is false.)
477:
478: $width and $height are optional numerical parameters that will override the width and height of the popped up window, which may be useful for certain help topics with big pictures included.
479:
480: =cut
481:
482: sub help_open_topic {
1.48 bowersj2 483: my ($topic, $text, $stayOnPage, $width, $height) = @_;
484: $text = "" if (not defined $text);
1.44 bowersj2 485: $stayOnPage = 0 if (not defined $stayOnPage);
486: $width = 350 if (not defined $width);
487: $height = 400 if (not defined $height);
488: my $filename = $topic;
489: $filename =~ s/ /_/g;
490:
1.48 bowersj2 491: my $template = "";
492: my $link;
1.44 bowersj2 493:
494: if (!$stayOnPage)
495: {
1.48 bowersj2 496: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height'))";
1.44 bowersj2 497: }
498: else
499: {
1.48 bowersj2 500: $link = "/adm/help/${filename}.hlp";
501: }
502:
503: # Add the text
504: if ($text ne "")
505: {
506: $template .= "<a href=\"$link\">$text</a> ";
507: }
508:
509: # Add the graphic
510: $template .= <<"ENDTEMPLATE";
1.57 albertel 511: <a href="$link"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 512: ENDTEMPLATE
513:
514: return $template;
515:
516: }
1.37 matthew 517:
1.45 matthew 518: =pod
519:
1.37 matthew 520: =item csv_translate($text)
521:
522: Translate $text to allow it to be output as a 'comma seperated values'
523: format.
524:
525: =cut
526:
527: sub csv_translate {
528: my $text = shift;
529: $text =~ s/\"/\"\"/g;
530: $text =~ s/\n//g;
531: return $text;
532: }
533:
534: ###############################################################
1.33 matthew 535: ## Home server <option> list generating code ##
536: ###############################################################
1.35 matthew 537: #-------------------------------------------
538:
1.45 matthew 539: =pod
540:
1.35 matthew 541: =item get_domains()
542:
543: Returns an array containing each of the domains listed in the hosts.tab
544: file.
545:
546: =cut
547:
548: #-------------------------------------------
1.34 matthew 549: sub get_domains {
550: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
551: my @domains;
552: my %seen;
553: foreach (sort values(%Apache::lonnet::hostdom)) {
554: push (@domains,$_) unless $seen{$_}++;
555: }
556: return @domains;
557: }
558:
1.35 matthew 559: #-------------------------------------------
560:
1.45 matthew 561: =pod
562:
1.35 matthew 563: =item select_dom_form($defdom,$name)
564:
565: Returns a string containing a <select name='$name' size='1'> form to
566: allow a user to select the domain to preform an operation in.
567: See loncreateuser.pm for an example invocation and use.
568:
569: =cut
570:
571: #-------------------------------------------
1.34 matthew 572: sub select_dom_form {
573: my ($defdom,$name) = @_;
574: my @domains = get_domains();
575: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
576: foreach (@domains) {
577: $selectdomain.="<option value=\"$_\" ".
578: ($_ eq $defdom ? 'selected' : '').
579: ">$_</option>\n";
580: }
581: $selectdomain.="</select>";
582: return $selectdomain;
583: }
584:
1.35 matthew 585: #-------------------------------------------
586:
1.45 matthew 587: =pod
588:
1.52 matthew 589: =item get_library_servers($domain)
1.35 matthew 590:
591: Returns a hash which contains keys like '103l3' and values like
592: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
593: given $domain.
594:
595: =cut
596:
597: #-------------------------------------------
1.52 matthew 598: sub get_library_servers {
1.33 matthew 599: my $domain = shift;
1.52 matthew 600: my %library_servers;
1.33 matthew 601: foreach (keys(%Apache::lonnet::libserv)) {
602: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 603: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 604: }
605: }
1.52 matthew 606: return %library_servers;
1.33 matthew 607: }
608:
1.35 matthew 609: #-------------------------------------------
610:
1.45 matthew 611: =pod
612:
1.35 matthew 613: =item home_server_option_list($domain)
614:
615: returns a string which contains an <option> list to be used in a
616: <select> form input. See loncreateuser.pm for an example.
617:
618: =cut
619:
620: #-------------------------------------------
1.33 matthew 621: sub home_server_option_list {
622: my $domain = shift;
1.52 matthew 623: my %servers = &get_library_servers($domain);
1.33 matthew 624: my $result = '';
625: foreach (sort keys(%servers)) {
626: $result.=
627: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
628: }
629: return $result;
630: }
631: ###############################################################
632: ## End of home server <option> list generating code ##
633: ###############################################################
1.32 matthew 634:
635: ###############################################################
636: ## Authentication changing form generation subroutines ##
637: ###############################################################
638: ##
639: ## All of the authform_xxxxxxx subroutines take their inputs in a
640: ## hash, and have reasonable default values.
641: ##
642: ## formname = the name given in the <form> tag.
1.35 matthew 643: #-------------------------------------------
644:
1.45 matthew 645: =pod
646:
1.35 matthew 647: =item authform_xxxxxx
648:
649: The authform_xxxxxx subroutines provide javascript and html forms which
650: handle some of the conveniences required for authentication forms.
651: This is not an optimal method, but it works.
652:
653: See loncreateuser.pm for invocation and use examples.
654:
655: =over 4
656:
657: =item authform_header
658:
659: =item authform_authorwarning
660:
661: =item authform_nochange
662:
663: =item authform_kerberos
664:
665: =item authform_internal
666:
667: =item authform_filesystem
668:
669: =back
670:
671: =cut
672:
673: #-------------------------------------------
1.32 matthew 674: sub authform_header{
675: my %in = (
676: formname => 'cu',
677: kerb_def_dom => 'MSU.EDU',
678: @_,
679: );
680: $in{'formname'} = 'document.' . $in{'formname'};
681: my $result='';
682: $result.=<<"END";
683: var current = new Object();
684: current.radiovalue = 'nochange';
685: current.argfield = null;
686:
687: function changed_radio(choice,currentform) {
688: var choicearg = choice + 'arg';
689: // If a radio button in changed, we need to change the argfield
690: if (current.radiovalue != choice) {
691: current.radiovalue = choice;
692: if (current.argfield != null) {
693: currentform.elements[current.argfield].value = '';
694: }
695: if (choice == 'nochange') {
696: current.argfield = null;
697: } else {
698: current.argfield = choicearg;
699: switch(choice) {
700: case 'krb':
701: currentform.elements[current.argfield].value =
702: "$in{'kerb_def_dom'}";
703: break;
704: default:
705: break;
706: }
707: }
708: }
709: return;
710: }
1.22 www 711:
1.32 matthew 712: function changed_text(choice,currentform) {
713: var choicearg = choice + 'arg';
714: if (currentform.elements[choicearg].value !='') {
715: switch (choice) {
716: case 'krb': currentform.elements[choicearg].value =
717: currentform.elements[choicearg].value.toUpperCase();
718: break;
719: default:
720: }
721: // clear old field
722: if ((current.argfield != choicearg) && (current.argfield != null)) {
723: currentform.elements[current.argfield].value = '';
724: }
725: current.argfield = choicearg;
726: }
727: set_auth_radio_buttons(choice,currentform);
728: return;
1.20 www 729: }
1.32 matthew 730:
731: function set_auth_radio_buttons(newvalue,currentform) {
732: var i=0;
733: while (i < currentform.login.length) {
734: if (currentform.login[i].value == newvalue) { break; }
735: i++;
736: }
737: if (i == currentform.login.length) {
738: return;
739: }
740: current.radiovalue = newvalue;
741: currentform.login[i].checked = true;
742: return;
743: }
744: END
745: return $result;
746: }
747:
748: sub authform_authorwarning{
749: my $result='';
750: $result=<<"END";
751: <i>As a general rule, only authors or co-authors should be filesystem
752: authenticated (which allows access to the server filesystem).</i>
753: END
754: return $result;
755: }
756:
757: sub authform_nochange{
758: my %in = (
759: formname => 'document.cu',
760: kerb_def_dom => 'MSU.EDU',
761: @_,
762: );
763: my $result='';
764: $result.=<<"END";
765: <input type="radio" name="login" value="nochange" checked="checked"
1.57 albertel 766: onclick="javascript:changed_radio('nochange',$in{'formname'});" />
1.32 matthew 767: Do not change login data
768: END
769: return $result;
770: }
771:
772: sub authform_kerberos{
773: my %in = (
774: formname => 'document.cu',
775: kerb_def_dom => 'MSU.EDU',
776: @_,
777: );
778: my $result='';
779: $result.=<<"END";
780: <input type="radio" name="login" value="krb"
781: onclick="javascript:changed_radio('krb',$in{'formname'});"
1.57 albertel 782: onchange="javascript:changed_radio('krb',$in{'formname'});" />
1.32 matthew 783: Kerberos authenticated with domain
784: <input type="text" size="10" name="krbarg" value=""
1.57 albertel 785: onchange="javascript:changed_text('krb',$in{'formname'});" />
1.58 albertel 786: <input type="radio" name="krbver" value="4" checked="on" />Version 4
787: <input type="radio" name="krbver" value="5" />Version 5
1.32 matthew 788: END
789: return $result;
790: }
791:
792: sub authform_internal{
793: my %args = (
794: formname => 'document.cu',
795: kerb_def_dom => 'MSU.EDU',
796: @_,
797: );
798: my $result='';
799: $result.=<<"END";
800: <input type="radio" name="login" value="int"
801: onchange="javascript:changed_radio('int',$args{'formname'});"
1.57 albertel 802: onclick="javascript:changed_radio('int',$args{'formname'});" />
1.32 matthew 803: Internally authenticated (with initial password
804: <input type="text" size="10" name="intarg" value=""
1.57 albertel 805: onchange="javascript:changed_text('int',$args{'formname'});" />
1.32 matthew 806: END
807: return $result;
808: }
809:
810: sub authform_local{
811: my %in = (
812: formname => 'document.cu',
813: kerb_def_dom => 'MSU.EDU',
814: @_,
815: );
816: my $result='';
817: $result.=<<"END";
818: <input type="radio" name="login" value="loc"
819: onchange="javascript:changed_radio('loc',$in{'formname'});"
1.57 albertel 820: onclick="javascript:changed_radio('loc',$in{'formname'});" />
1.32 matthew 821: Local Authentication with argument
822: <input type="text" size="10" name="locarg" value=""
1.57 albertel 823: onchange="javascript:changed_text('loc',$in{'formname'});" />
1.32 matthew 824: END
825: return $result;
826: }
827:
828: sub authform_filesystem{
829: my %in = (
830: formname => 'document.cu',
831: kerb_def_dom => 'MSU.EDU',
832: @_,
833: );
834: my $result='';
835: $result.=<<"END";
836: <input type="radio" name="login" value="fsys"
837: onchange="javascript:changed_radio('fsys',$in{'formname'});"
1.57 albertel 838: onclick="javascript:changed_radio('fsys',$in{'formname'});" />
1.32 matthew 839: Filesystem authenticated (with initial password
840: <input type="text" size="10" name="fsysarg" value=""
841: onchange="javascript:changed_text('fsys',$in{'formname'});">
842: END
843: return $result;
844: }
845:
846: ###############################################################
847: ## End Authentication changing form generation functions ##
848: ###############################################################
849:
1.46 matthew 850: ###############################################################
851: ## Thesaurus Functions ##
852: ###############################################################
1.20 www 853:
1.46 matthew 854: =pod
1.20 www 855:
1.46 matthew 856: =item initialize_keywords
857:
858: Initializes the package variable %Keywords if it is empty. Uses the
859: package variable $thesaurus_db_file.
860:
861: =cut
862:
863: ###################################################
864:
865: sub initialize_keywords {
866: return 1 if (scalar keys(%Keywords));
867: # If we are here, %Keywords is empty, so fill it up
868: # Make sure the file we need exists...
869: if (! -e $thesaurus_db_file) {
870: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
871: " failed because it does not exist");
872: return 0;
873: }
874: # Set up the hash as a database
875: my %thesaurus_db;
876: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 877: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 878: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
879: $thesaurus_db_file);
880: return 0;
881: }
882: # Get the average number of appearances of a word.
883: my $avecount = $thesaurus_db{'average.count'};
884: # Put keywords (those that appear > average) into %Keywords
885: while (my ($word,$data)=each (%thesaurus_db)) {
886: my ($count,undef) = split /:/,$data;
887: $Keywords{$word}++ if ($count > $avecount);
888: }
889: untie %thesaurus_db;
890: # Remove special values from %Keywords.
891: foreach ('total.count','average.count') {
892: delete($Keywords{$_}) if (exists($Keywords{$_}));
893: }
894: return 1;
895: }
896:
897: ###################################################
898:
899: =pod
900:
901: =item keyword($word)
902:
903: Returns true if $word is a keyword. A keyword is a word that appears more
904: than the average number of times in the thesaurus database. Calls
905: &initialize_keywords
906:
907: =cut
908:
909: ###################################################
1.20 www 910:
911: sub keyword {
1.46 matthew 912: return if (!&initialize_keywords());
913: my $word=lc(shift());
914: $word=~s/\W//g;
915: return exists($Keywords{$word});
1.20 www 916: }
1.46 matthew 917:
918: ###############################################################
919:
920: =pod
1.20 www 921:
1.46 matthew 922: =item get_related_words
923:
924: Look up a word in the thesaurus. Takes a scalar arguement and returns
925: an array of words. If the keyword is not in the thesaurus, an empty array
926: will be returned. The order of the words returned is determined by the
927: database which holds them.
928:
929: Uses global $thesaurus_db_file.
930:
931: =cut
932:
933: ###############################################################
934: sub get_related_words {
935: my $keyword = shift;
936: my %thesaurus_db;
937: if (! -e $thesaurus_db_file) {
938: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
939: "failed because the file does not exist");
940: return ();
941: }
942: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 943: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 944: return ();
945: }
946: my @Words=();
947: if (exists($thesaurus_db{$keyword})) {
948: $_ = $thesaurus_db{$keyword};
949: (undef,@Words) = split/:/; # The first element is the number of times
950: # the word appears. We do not need it now.
951: for (my $i=0;$i<=$#Words;$i++) {
952: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 953: }
954: }
1.46 matthew 955: untie %thesaurus_db;
956: return @Words;
1.14 harris41 957: }
1.46 matthew 958:
959: ###############################################################
960: ## End Thesaurus Functions ##
961: ###############################################################
1.61 www 962:
963: # -------------------------------------------------------------- Plaintext name
964:
965: sub plainname {
966: my ($uname,$udom)=@_;
967: my %names=&Apache::lonnet::get('environment',
968: ['firstname','middlename','lastname','generation'],
969: $udom,$uname);
1.62 www 970: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1.61 www 971: $names{'lastname'}.' '.$names{'generation'};
1.62 www 972: $name=~s/\s+$//;
973: $name=~s/\s+/ /g;
974: return $name;
1.61 www 975: }
1.66 www 976:
977: # -------------------------------------------------------------------- Nickname
978:
979:
980: sub nickname {
981: my ($uname,$udom)=@_;
982: my %names=&Apache::lonnet::get('environment',
983: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1.67 ! www 984: my $name=&Apache::lonnet::unescape($names{'nickname'});
1.66 www 985: if ($name) {
986: $name='"'.$name.'"';
987: } else {
988: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
989: $names{'lastname'}.' '.$names{'generation'};
990: $name=~s/\s+$//;
991: $name=~s/\s+/ /g;
992: }
993: return $name;
994: }
995:
1.61 www 996:
997: # ------------------------------------------------------------------ Screenname
998:
999: sub screenname {
1000: my ($uname,$udom)=@_;
1001: my %names=
1002: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.67 ! www 1003: return &Apache::lonnet::unescape($names{'screenname'});
1.62 www 1004: }
1005:
1006: # ------------------------------------------------------------- Message Wrapper
1007:
1008: sub messagewrapper {
1009: my ($link,$un,$do)=@_;
1010: return
1011: "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
1012: }
1013: # ------------------------------------------------------------- Aboutme Wrapper
1014:
1015: sub aboutmewrapper {
1016: my ($link,$un,$do)=@_;
1017: return "<a href='/adm/$do/$un/aboutme'>$link</a>";
1018: }
1019:
1020: # ------------------------------------------------------------ Syllabus Wrapper
1021:
1022:
1023: sub syllabuswrapper {
1024: my ($link,$un,$do)=@_;
1025: return "<a href='/public/$do/$un/syllabus'>$link</a>";
1.61 www 1026: }
1.14 harris41 1027:
1028: # ---------------------------------------------------------------- Language IDs
1029: sub languageids {
1.16 harris41 1030: return sort(keys(%language));
1.14 harris41 1031: }
1032:
1033: # -------------------------------------------------------- Language Description
1034: sub languagedescription {
1.16 harris41 1035: return $language{shift(@_)};
1.14 harris41 1036: }
1037:
1038: # --------------------------------------------------------------- Copyright IDs
1039: sub copyrightids {
1.16 harris41 1040: return sort(keys(%cprtag));
1.14 harris41 1041: }
1042:
1043: # ------------------------------------------------------- Copyright Description
1044: sub copyrightdescription {
1.16 harris41 1045: return $cprtag{shift(@_)};
1.14 harris41 1046: }
1047:
1048: # ------------------------------------------------------------- File Categories
1049: sub filecategories {
1.41 ng 1050: return sort(keys(%category_extensions));
1.15 harris41 1051: }
1.14 harris41 1052:
1.17 harris41 1053: # -------------------------------------- File Types within a specified category
1.15 harris41 1054: sub filecategorytypes {
1.41 ng 1055: return @{$category_extensions{lc($_[0])}};
1.14 harris41 1056: }
1057:
1058: # ------------------------------------------------------------------ File Types
1059: sub fileextensions {
1.16 harris41 1060: return sort(keys(%fe));
1.14 harris41 1061: }
1062:
1063: # ------------------------------------------------------------- Embedding Style
1064: sub fileembstyle {
1.16 harris41 1065: return $fe{lc(shift(@_))};
1.14 harris41 1066: }
1067:
1068: # ------------------------------------------------------------ Description Text
1069: sub filedescription {
1.16 harris41 1070: return $fd{lc(shift(@_))};
1071: }
1072:
1073: # ------------------------------------------------------------ Description Text
1074: sub filedescriptionex {
1075: my $ex=shift;
1076: return '.'.$ex.' '.$fd{lc($ex)};
1.12 harris41 1077: }
1.1 albertel 1078:
1.40 ng 1079: # ---- Retrieve attempts by students
1080: # input
1081: # $symb - problem including path
1082: # $username,$domain - that of the student
1083: # $course - course name
1084: # $getattempt - leave blank if want all attempts, else put something.
1.43 ng 1085: # $regexp - regular expression. If string matches regexp send to
1086: # $gradesub - routine that process the string if it matches regexp
1.40 ng 1087: #
1088: # output
1089: # formatted as a table all the attempts, if any.
1090: #
1.1 albertel 1091: sub get_previous_attempt {
1.43 ng 1092: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 1093: my $prevattempts='';
1.43 ng 1094: no strict 'refs';
1.1 albertel 1095: if ($symb) {
1.3 albertel 1096: my (%returnhash)=
1097: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 1098: if ($returnhash{'version'}) {
1099: my %lasthash=();
1100: my $version;
1101: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 1102: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 1103: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 1104: }
1.1 albertel 1105: }
1.43 ng 1106: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 1107: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 1108: foreach (sort(keys %lasthash)) {
1.31 albertel 1109: my ($ign,@parts) = split(/\./,$_);
1.41 ng 1110: if ($#parts > 0) {
1.31 albertel 1111: my $data=$parts[-1];
1112: pop(@parts);
1.40 ng 1113: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 1114: } else {
1.41 ng 1115: if ($#parts == 0) {
1116: $prevattempts.='<th>'.$parts[0].'</th>';
1117: } else {
1118: $prevattempts.='<th>'.$ign.'</th>';
1119: }
1.31 albertel 1120: }
1.16 harris41 1121: }
1.40 ng 1122: if ($getattempt eq '') {
1123: for ($version=1;$version<=$returnhash{'version'};$version++) {
1124: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
1125: foreach (sort(keys %lasthash)) {
1126: my $value;
1127: if ($_ =~ /timestamp/) {
1128: $value=scalar(localtime($returnhash{$version.':'.$_}));
1129: } else {
1130: $value=$returnhash{$version.':'.$_};
1131: }
1132: $prevattempts.='<td>'.$value.' </td>';
1133: }
1134: }
1.1 albertel 1135: }
1.40 ng 1136: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 1137: foreach (sort(keys %lasthash)) {
1.5 albertel 1138: my $value;
1139: if ($_ =~ /timestamp/) {
1140: $value=scalar(localtime($lasthash{$_}));
1141: } else {
1142: $value=$lasthash{$_};
1143: }
1.49 ng 1144: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 1145: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 1146: }
1.40 ng 1147: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 1148: } else {
1149: $prevattempts='Nothing submitted - no attempts.';
1150: }
1151: } else {
1152: $prevattempts='No data.';
1153: }
1.10 albertel 1154: }
1155:
1156: sub get_student_view {
1.64 sakharuk 1157: my ($symb,$username,$domain,$courseid,$target) = @_;
1.10 albertel 1158: my ($map,$id,$feedurl) = split(/___/,$symb);
1159: my (%old,%moreenv);
1160: my @elements=('symb','courseid','domain','username');
1161: foreach my $element (@elements) {
1162: $old{$element}=$ENV{'form.grade_'.$element};
1163: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1164: }
1.64 sakharuk 1165: if ($target eq 'tex') {$moreenv{'form.grade_target'} = 'tex';}
1.11 albertel 1166: &Apache::lonnet::appenv(%moreenv);
1167: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1168: &Apache::lonnet::delenv('form.grade_');
1169: foreach my $element (@elements) {
1170: $ENV{'form.grade_'.$element}=$old{$element};
1171: }
1172: $userview=~s/\<body[^\>]*\>//gi;
1173: $userview=~s/\<\/body\>//gi;
1174: $userview=~s/\<html\>//gi;
1175: $userview=~s/\<\/html\>//gi;
1176: $userview=~s/\<head\>//gi;
1177: $userview=~s/\<\/head\>//gi;
1178: $userview=~s/action\s*\=/would_be_action\=/gi;
1179: return $userview;
1180: }
1181:
1182: sub get_student_answers {
1183: my ($symb,$username,$domain,$courseid) = @_;
1184: my ($map,$id,$feedurl) = split(/___/,$symb);
1185: my (%old,%moreenv);
1186: my @elements=('symb','courseid','domain','username');
1187: foreach my $element (@elements) {
1188: $old{$element}=$ENV{'form.grade_'.$element};
1189: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1190: }
1191: $moreenv{'form.grade_target'}='answer';
1.10 albertel 1192: &Apache::lonnet::appenv(%moreenv);
1193: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1194: &Apache::lonnet::delenv('form.grade_');
1195: foreach my $element (@elements) {
1196: $ENV{'form.grade_'.$element}=$old{$element};
1197: }
1198: return $userview;
1.1 albertel 1199: }
1.37 matthew 1200:
1201: ###############################################
1.51 www 1202:
1203:
1204: sub timehash {
1205: my @ltime=localtime(shift);
1206: return ( 'seconds' => $ltime[0],
1207: 'minutes' => $ltime[1],
1208: 'hours' => $ltime[2],
1209: 'day' => $ltime[3],
1210: 'month' => $ltime[4]+1,
1211: 'year' => $ltime[5]+1900,
1212: 'weekday' => $ltime[6],
1213: 'dayyear' => $ltime[7]+1,
1214: 'dlsav' => $ltime[8] );
1215: }
1216:
1217: sub maketime {
1218: my %th=@_;
1219: return POSIX::mktime(
1220: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1221: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
1222: }
1223:
1224:
1225: sub findallcourses {
1226: my %courses=();
1227: my $now=time;
1228: foreach (keys %ENV) {
1229: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1230: my ($starttime,$endtime)=$ENV{$_};
1231: my $active=1;
1232: if ($starttime) {
1233: if ($now<$starttime) { $active=0; }
1234: }
1235: if ($endtime) {
1236: if ($now>$endtime) { $active=0; }
1237: }
1238: if ($active) { $courses{$1.'_'.$2}=1; }
1239: }
1240: }
1241: return keys %courses;
1242: }
1.37 matthew 1243:
1.54 www 1244: ###############################################
1.60 matthew 1245: ###############################################
1246:
1247: =pod
1248:
1.63 www 1249: =item &determinedomain()
1.60 matthew 1250:
1251: Inputs: $domain (usually will be undef)
1252:
1.63 www 1253: Returns: Determines which domain should be used for designs
1.60 matthew 1254:
1255: =cut
1.54 www 1256:
1.60 matthew 1257: ###############################################
1.63 www 1258: sub determinedomain {
1259: my $domain=shift;
1260: if (! $domain) {
1.60 matthew 1261: # Determine domain if we have not been given one
1262: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1263: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
1264: if ($ENV{'request.role.domain'}) {
1265: $domain=$ENV{'request.role.domain'};
1266: }
1267: }
1.63 www 1268: return $domain;
1269: }
1270: ###############################################
1271: =pod
1272:
1273: =item &domainlogo()
1274:
1275: Inputs: $domain (usually will be undef)
1276:
1277: Returns: A link to a domain logo, if the domain logo exists.
1278: If the domain logo does not exist, a description of the domain.
1279:
1280: =cut
1281: ###############################################
1282: sub domainlogo {
1283: my $domain = &determinedomain(shift);
1284: # See if there is a logo
1.59 www 1285: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.60 matthew 1286: return '<img src="/adm/lonDomLogos/'.$domain.'.gif" />';
1287: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
1288: return $Apache::lonnet::domaindescription{$domain};
1.59 www 1289: } else {
1.60 matthew 1290: return '';
1.59 www 1291: }
1292: }
1.63 www 1293: ##############################################
1294:
1295: =pod
1296:
1297: =item &designparm()
1298:
1299: Inputs: $which parameter; $domain (usually will be undef)
1300:
1301: Returns: value of designparamter $which
1302:
1303: =cut
1304: ##############################################
1305: sub designparm {
1306: my ($which,$domain)=@_;
1307: $domain=&determinedomain($domain);
1308: if ($designhash{$domain.'.'.$which}) {
1309: return $designhash{$domain.'.'.$which};
1310: } else {
1311: return $designhash{'default.'.$which};
1312: }
1313: }
1.59 www 1314:
1.60 matthew 1315: ###############################################
1316: ###############################################
1317:
1318: =pod
1319:
1320: =item &bodytag()
1321:
1322: Returns a uniform header for LON-CAPA web pages.
1323:
1324: Inputs:
1325:
1326: $title, A title to be displayed on the page.
1327: $function, the current role (can be undef).
1328: $addentries, extra parameters for the <body> tag.
1329: $bodyonly, if defined, only return the <body> tag.
1330: $domain, if defined, force a given domain.
1331:
1332: Returns: A uniform header for LON-CAPA web pages.
1333: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
1334: If $bodyonly is undef or zero, an html string containing a <body> tag and
1335: other decorations will be returned.
1336:
1337: =cut
1338:
1339: ###############################################
1.63 www 1340:
1341:
1.60 matthew 1342: ###############################################
1.54 www 1343: sub bodytag {
1.60 matthew 1344: my ($title,$function,$addentries,$bodyonly,$domain)=@_;
1.55 www 1345: unless ($function) {
1346: $function='student';
1347: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
1348: $function='coordinator';
1349: }
1350: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
1351: $function='admin';
1352: }
1353: if (($ENV{'request.role'}=~/^(au|ca)/) ||
1354: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
1355: $function='author';
1356: }
1357: }
1.63 www 1358: my $img=&designparm($function.'.img',$domain);
1359: my $pgbg=&designparm($function.'.pgbg',$domain);
1360: my $tabbg=&designparm($function.'.tabbg',$domain);
1361: my $font=&designparm($function.'.font',$domain);
1362: my $link=&designparm($function.'.link',$domain);
1363: my $alink=&designparm($function.'.alink',$domain);
1364: my $vlink=&designparm($function.'.vlink',$domain);
1365: my $sidebg=&designparm($function.'.sidebg',$domain);
1366:
1367: # role and realm
1.55 www 1368: my ($role,$realm)
1369: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
1370: # realm
1.54 www 1371: if ($ENV{'request.course.id'}) {
1.55 www 1372: $realm=
1373: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.54 www 1374: }
1.55 www 1375: unless ($realm) { $realm=' '; }
1376: # Set messages
1.60 matthew 1377: my $messages=&domainlogo($domain);
1.55 www 1378: # Output
1.60 matthew 1379: my $bodytag = <<END;
1.54 www 1380: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1381: $addentries>
1.60 matthew 1382: END
1383: if ($bodyonly) {
1384: return $bodytag;
1385: } else {
1386: return(<<ENDBODY);
1387: $bodytag
1.55 www 1388: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1389: <tr><td bgcolor="$font">
1.63 www 1390: <img src="$img" /></td>
1391: <td bgcolor="$font"><font color='$sidebg'>$messages</font></td>
1.55 www 1392: </tr>
1.54 www 1393: <tr>
1.55 www 1394: <td rowspan="3" bgcolor="$tabbg">
1395: <font size="5"><b>$title</b></font>
1.54 www 1396: <td bgcolor="$tabbg" align="right">
1397: <font size="2">
1398: $ENV{'environment.firstname'}
1399: $ENV{'environment.middlename'}
1400: $ENV{'environment.lastname'}
1401: $ENV{'environment.generation'}
1.55 www 1402: </font>
1.54 www 1403: </td>
1404: </tr>
1405: <tr><td bgcolor="$tabbg" align="right">
1.55 www 1406: <font size="2">$role</font>
1.54 www 1407: </td></tr>
1.55 www 1408: <tr>
1409: <td bgcolor="$tabbg" align="right"><font size="2">$realm</font> </td></tr>
1.54 www 1410: </table><br>
1411: ENDBODY
1.60 matthew 1412: }
1.54 www 1413: }
1.37 matthew 1414: ###############################################
1.1 albertel 1415:
1.6 albertel 1416: sub get_unprocessed_cgi {
1.25 albertel 1417: my ($query,$possible_names)= @_;
1.26 matthew 1418: # $Apache::lonxml::debug=1;
1.16 harris41 1419: foreach (split(/&/,$query)) {
1.6 albertel 1420: my ($name, $value) = split(/=/,$_);
1.25 albertel 1421: $name = &Apache::lonnet::unescape($name);
1422: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
1423: $value =~ tr/+/ /;
1424: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1425: &Apache::lonxml::debug("Seting :$name: to :$value:");
1.30 albertel 1426: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 1427: }
1.16 harris41 1428: }
1.6 albertel 1429: }
1430:
1.7 albertel 1431: sub cacheheader {
1.23 www 1432: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.8 albertel 1433: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.7 albertel 1434: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1435: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
1436: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1437: return $output;
1438: }
1439:
1.9 albertel 1440: sub no_cache {
1441: my ($r) = @_;
1.23 www 1442: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.24 albertel 1443: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.9 albertel 1444: $r->no_cache(1);
1445: $r->header_out("Pragma" => "no-cache");
1.24 albertel 1446: #$r->header_out("Expires" => $date);
1.9 albertel 1447: }
1.25 albertel 1448:
1449: sub add_to_env {
1450: my ($name,$value)=@_;
1.28 albertel 1451: if (defined($ENV{$name})) {
1.27 albertel 1452: if (ref($ENV{$name})) {
1.25 albertel 1453: #already have multiple values
1454: push(@{ $ENV{$name} },$value);
1455: } else {
1456: #first time seeing multiple values, convert hash entry to an arrayref
1457: my $first=$ENV{$name};
1458: undef($ENV{$name});
1459: push(@{ $ENV{$name} },$first,$value);
1460: }
1461: } else {
1462: $ENV{$name}=$value;
1463: }
1.31 albertel 1464: }
1465:
1.41 ng 1466: =pod
1.45 matthew 1467:
1468: =back
1.41 ng 1469:
1470: =head2 CSV Upload/Handling functions
1.38 albertel 1471:
1.41 ng 1472: =over 4
1473:
1474: =item upfile_store($r)
1475:
1476: Store uploaded file, $r should be the HTTP Request object,
1477: needs $ENV{'form.upfile'}
1478: returns $datatoken to be put into hidden field
1479:
1480: =cut
1.31 albertel 1481:
1482: sub upfile_store {
1483: my $r=shift;
1484: $ENV{'form.upfile'}=~s/\r/\n/gs;
1485: $ENV{'form.upfile'}=~s/\f/\n/gs;
1486: $ENV{'form.upfile'}=~s/\n+/\n/gs;
1487: $ENV{'form.upfile'}=~s/\n+$//gs;
1488:
1489: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1490: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
1491: {
1492: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
1493: '/tmp/'.$datatoken.'.tmp');
1494: print $fh $ENV{'form.upfile'};
1495: }
1496: return $datatoken;
1497: }
1498:
1.56 matthew 1499: =pod
1500:
1.41 ng 1501: =item load_tmp_file($r)
1502:
1503: Load uploaded file from tmp, $r should be the HTTP Request object,
1504: needs $ENV{'form.datatoken'},
1505: sets $ENV{'form.upfile'} to the contents of the file
1506:
1507: =cut
1.31 albertel 1508:
1509: sub load_tmp_file {
1510: my $r=shift;
1511: my @studentdata=();
1512: {
1513: my $fh;
1514: if ($fh=Apache::File->new($r->dir_config('lonDaemons').
1515: '/tmp/'.$ENV{'form.datatoken'}.'.tmp')) {
1516: @studentdata=<$fh>;
1517: }
1518: }
1519: $ENV{'form.upfile'}=join('',@studentdata);
1520: }
1521:
1.56 matthew 1522: =pod
1523:
1.41 ng 1524: =item upfile_record_sep()
1525:
1526: Separate uploaded file into records
1527: returns array of records,
1528: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
1529:
1530: =cut
1.31 albertel 1531:
1532: sub upfile_record_sep {
1533: if ($ENV{'form.upfiletype'} eq 'xml') {
1534: } else {
1535: return split(/\n/,$ENV{'form.upfile'});
1536: }
1537: }
1538:
1.56 matthew 1539: =pod
1540:
1.41 ng 1541: =item record_sep($record)
1542:
1543: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
1544:
1545: =cut
1546:
1.31 albertel 1547: sub record_sep {
1548: my $record=shift;
1549: my %components=();
1550: if ($ENV{'form.upfiletype'} eq 'xml') {
1551: } elsif ($ENV{'form.upfiletype'} eq 'space') {
1552: my $i=0;
1553: foreach (split(/\s+/,$record)) {
1554: my $field=$_;
1555: $field=~s/^(\"|\')//;
1556: $field=~s/(\"|\')$//;
1557: $components{$i}=$field;
1558: $i++;
1559: }
1560: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
1561: my $i=0;
1562: foreach (split(/\t+/,$record)) {
1563: my $field=$_;
1564: $field=~s/^(\"|\')//;
1565: $field=~s/(\"|\')$//;
1566: $components{$i}=$field;
1567: $i++;
1568: }
1569: } else {
1570: my @allfields=split(/\,/,$record);
1571: my $i=0;
1572: my $j;
1573: for ($j=0;$j<=$#allfields;$j++) {
1574: my $field=$allfields[$j];
1575: if ($field=~/^\s*(\"|\')/) {
1576: my $delimiter=$1;
1577: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
1578: $j++;
1579: $field.=','.$allfields[$j];
1580: }
1581: $field=~s/^\s*$delimiter//;
1582: $field=~s/$delimiter\s*$//;
1583: }
1584: $components{$i}=$field;
1585: $i++;
1586: }
1587: }
1588: return %components;
1589: }
1590:
1.56 matthew 1591: =pod
1592:
1.41 ng 1593: =item upfile_select_html()
1594:
1595: return HTML code to select file and specify its type
1596:
1597: =cut
1598:
1.31 albertel 1599: sub upfile_select_html {
1600: return (<<'ENDUPFORM');
1.57 albertel 1601: <input type="file" name="upfile" size="50" />
1.31 albertel 1602: <br />Type: <select name="upfiletype">
1603: <option value="csv">CSV (comma separated values, spreadsheet)</option>
1604: <option value="space">Space separated</option>
1605: <option value="tab">Tabulator separated</option>
1606: <option value="xml">HTML/XML</option>
1607: </select>
1608: ENDUPFORM
1609: }
1610:
1.56 matthew 1611: =pod
1612:
1.41 ng 1613: =item csv_print_samples($r,$records)
1614:
1615: Prints a table of sample values from each column uploaded $r is an
1616: Apache Request ref, $records is an arrayref from
1617: &Apache::loncommon::upfile_record_sep
1618:
1619: =cut
1620:
1.31 albertel 1621: sub csv_print_samples {
1622: my ($r,$records) = @_;
1623: my (%sone,%stwo,%sthree);
1624: %sone=&record_sep($$records[0]);
1625: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
1626: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1627:
1628: $r->print('Samples<br /><table border="2"><tr>');
1629: foreach (sort({$a <=> $b} keys(%sone))) { $r->print('<th>Column '.($_+1).'</th>'); }
1630: $r->print('</tr>');
1631: foreach my $hash (\%sone,\%stwo,\%sthree) {
1632: $r->print('<tr>');
1633: foreach (sort({$a <=> $b} keys(%sone))) {
1634: $r->print('<td>');
1635: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
1636: $r->print('</td>');
1637: }
1638: $r->print('</tr>');
1639: }
1640: $r->print('</tr></table><br />'."\n");
1641: }
1642:
1.56 matthew 1643: =pod
1644:
1.41 ng 1645: =item csv_print_select_table($r,$records,$d)
1646:
1647: Prints a table to create associations between values and table columns.
1648: $r is an Apache Request ref,
1649: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1650: $d is an array of 2 element arrays (internal name, displayed name)
1651:
1652: =cut
1653:
1.31 albertel 1654: sub csv_print_select_table {
1655: my ($r,$records,$d) = @_;
1656: my $i=0;my %sone;
1657: %sone=&record_sep($$records[0]);
1658: $r->print('Associate columns with student attributes.'."\n".
1659: '<table border="2"><tr><th>Attribute</th><th>Column</th></tr>'."\n");
1660: foreach (@$d) {
1661: my ($value,$display)=@{ $_ };
1662: $r->print('<tr><td>'.$display.'</td>');
1663:
1664: $r->print('<td><select name=f'.$i.
1.32 matthew 1665: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 1666: $r->print('<option value="none"></option>');
1667: foreach (sort({$a <=> $b} keys(%sone))) {
1668: $r->print('<option value="'.$_.'">Column '.($_+1).'</option>');
1669: }
1670: $r->print('</select></td></tr>'."\n");
1671: $i++;
1672: }
1673: $i--;
1674: return $i;
1675: }
1.56 matthew 1676:
1677: =pod
1.31 albertel 1678:
1.41 ng 1679: =item csv_samples_select_table($r,$records,$d)
1680:
1681: Prints a table of sample values from the upload and can make associate samples to internal names.
1682:
1683: $r is an Apache Request ref,
1684: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1685: $d is an array of 2 element arrays (internal name, displayed name)
1686:
1687: =cut
1688:
1.31 albertel 1689: sub csv_samples_select_table {
1690: my ($r,$records,$d) = @_;
1691: my %sone; my %stwo; my %sthree;
1692: my $i=0;
1693:
1694: $r->print('<table border=2><tr><th>Field</th><th>Samples</th></tr>');
1695: %sone=&record_sep($$records[0]);
1696: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
1697: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1698:
1699: foreach (sort keys %sone) {
1700: $r->print('<tr><td><select name=f'.$i.
1.32 matthew 1701: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 1702: foreach (@$d) {
1703: my ($value,$display)=@{ $_ };
1704: $r->print('<option value='.$value.'>'.$display.'</option>');
1705: }
1706: $r->print('</select></td><td>');
1707: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
1708: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
1709: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
1710: $r->print('</td></tr>');
1711: $i++;
1712: }
1713: $i--;
1714: return($i);
1.25 albertel 1715: }
1.1 albertel 1716: 1;
1717: __END__;
1.17 harris41 1718:
1.41 ng 1719: =pod
1720:
1721: =back
1722:
1723: =head2 Access .tab File Data
1724:
1725: =over 4
1726:
1.35 matthew 1727: =item languageids()
1.17 harris41 1728:
1.35 matthew 1729: returns list of all language ids
1.17 harris41 1730:
1.35 matthew 1731: =item languagedescription()
1.17 harris41 1732:
1.35 matthew 1733: returns description of a specified language id
1.17 harris41 1734:
1.35 matthew 1735: =item copyrightids()
1.17 harris41 1736:
1.35 matthew 1737: returns list of all copyrights
1.17 harris41 1738:
1.35 matthew 1739: =item copyrightdescription()
1.17 harris41 1740:
1.35 matthew 1741: returns description of a specified copyright id
1.17 harris41 1742:
1.35 matthew 1743: =item filecategories()
1.17 harris41 1744:
1.35 matthew 1745: returns list of all file categories
1.17 harris41 1746:
1.35 matthew 1747: =item filecategorytypes()
1.17 harris41 1748:
1.35 matthew 1749: returns list of file types belonging to a given file
1.17 harris41 1750: category
1751:
1.35 matthew 1752: =item fileembstyle()
1.17 harris41 1753:
1.35 matthew 1754: returns embedding style for a specified file type
1.17 harris41 1755:
1.35 matthew 1756: =item filedescription()
1.17 harris41 1757:
1.35 matthew 1758: returns description for a specified file type
1.17 harris41 1759:
1.35 matthew 1760: =item filedescriptionex()
1.17 harris41 1761:
1.35 matthew 1762: returns description for a specified file type with
1.17 harris41 1763: extra formatting
1764:
1.41 ng 1765: =back
1766:
1767: =head2 Alternate Problem Views
1768:
1769: =over 4
1770:
1.35 matthew 1771: =item get_previous_attempt()
1.17 harris41 1772:
1.35 matthew 1773: return string with previous attempt on problem
1.17 harris41 1774:
1.35 matthew 1775: =item get_student_view()
1.17 harris41 1776:
1.35 matthew 1777: show a snapshot of what student was looking at
1.17 harris41 1778:
1.35 matthew 1779: =item get_student_answers()
1.17 harris41 1780:
1.35 matthew 1781: show a snapshot of how student was answering problem
1.17 harris41 1782:
1.41 ng 1783: =back
1784:
1785: =head2 HTTP Helper
1786:
1787: =over 4
1788:
1789: =item get_unprocessed_cgi($query,$possible_names)
1790:
1791: Modify the %ENV hash to contain unprocessed CGI form parameters held in
1792: $query. The parameters listed in $possible_names (an array reference),
1793: will be set in $ENV{'form.name'} if they do not already exist.
1.17 harris41 1794:
1.41 ng 1795: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
1796: $possible_names is an ref to an array of form element names. As an example:
1797: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
1798: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
1.17 harris41 1799:
1.35 matthew 1800: =item cacheheader()
1.17 harris41 1801:
1.35 matthew 1802: returns cache-controlling header code
1.17 harris41 1803:
1.65 matthew 1804: =item no_cache($r)
1.17 harris41 1805:
1.35 matthew 1806: specifies header code to not have cache
1.25 albertel 1807:
1.35 matthew 1808: =item add_to_env($name,$value)
1.25 albertel 1809:
1.35 matthew 1810: adds $name to the %ENV hash with value
1.25 albertel 1811: $value, if $name already exists, the entry is converted to an array
1812: reference and $value is added to the array.
1.17 harris41 1813:
1814: =back
1815:
1816: =cut
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