1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.82 2003/12/22 18:58:26 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # YEAR=1999
29: # 5/21/99, 5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)
30: # 11/23 Gerd Kortemeyer
31: # YEAR=2000
32: # 07/20-08/04 H.K. Ng
33: # YEAR=2001
34: # 05/9-05/19/2001 H. K. Ng
35: # 05/21/2001 H. K. Ng
36: # 05/23/2001 H. K. Ng
37: # 6/26,7/8 H. K. Ng
38: # 8/14 H. K. Ng
39: # 11/30 Matthew Hall
40: # YEAR=2002
41: # 6/29/2002 H. K. Ng
42: #
43: ###
44:
45: ###############################################################################
46: ## ##
47: ## ORGANIZATION OF THIS PERL MODULE ##
48: ## ##
49: ## 1. Description of functions ##
50: ## 2. Modules used by this module ##
51: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
52: ## 4. BEGIN block (to be run once after compilation) ##
53: ## 5. Handling routine called via Apache and mod_perl ##
54: ## 6. Other subroutines ##
55: ## ##
56: ###############################################################################
57:
58: package Apache::lonindexer;
59:
60: # ------------------------------------------------- modules used by this module
61: use strict;
62: use Apache::lonnet();
63: use Apache::loncommon();
64: use Apache::Constants qw(:common);
65: use Apache::lonmeta;
66: use Apache::File;
67: use Apache::lonlocal;
68: use GDBM_File;
69:
70: # ---------------------------------------- variables used throughout the module
71: my %hash; # tied to a user-specific gdbm file
72: my %dirs; # keys are directories, values are the open/close status
73: my %language; # has the reference information present in language.tab
74:
75: # ----- Values which are set by the handler subroutine and are accessible to
76: # ----- other methods.
77: my $extrafield; # default extra table cell
78: my $fnum; # file counter
79: my $dnum; # directory counter
80:
81: # ----- Used to include or exclude files with certain extensions.
82: my @Only = ();
83: my @Omit = ();
84:
85:
86: # ------------------------------------------------------- Puts directory header
87:
88: sub crumbs {
89: my $uri=shift;
90: my $output='<br /><tt><b><font size="+2">/';
91: my $path='/';
92: foreach (split('/',$uri)) {
93: unless ($_) { next; }
94: $path.=$_.'/';
95: $output.='<a href="'.$path.'">'.$_.'</a>/';
96: }
97: return $output.'</font></b></tt><br />';
98: }
99:
100: # ----------------------------- Handling routine called via Apache and mod_perl
101: sub handler {
102: my $r = shift;
103: my $c = $r->connection();
104: &Apache::loncommon::content_type($r,'text/html');
105: &Apache::loncommon::no_cache($r);
106: $r->send_http_header;
107: return OK if $r->header_only;
108: $fnum=0;
109: $dnum=0;
110:
111: # Deal with stupid global variables (is there a way around making
112: # these global to this package? It is just so wrong....)
113: undef (@Only);
114: undef (@Omit);
115:
116: # ------------------------------------- read in machine configuration variables
117: my $iconpath= $r->dir_config('lonIconsURL') . "/";
118: my $domain = $r->dir_config('lonDefDomain');
119: my $role = $r->dir_config('lonRole');
120: my $loadlim = $r->dir_config('lonLoadLim');
121: my $servadm = $r->dir_config('lonAdmEMail');
122: my $sysadm = $r->dir_config('lonSysEMail');
123: my $lonhost = $r->dir_config('lonHostID');
124: my $tabdir = $r->dir_config('lonTabDir');
125:
126: my $fileclr='#ffffe6';
127: my $line;
128: my (@attrchk,@openpath);
129: my $uri=$r->uri;
130:
131: # -------------------------------------- see if called from an interactive mode
132: # Get the parameters from the query string
133: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
134: ['catalogmode','launch','acts','mode','form','element',
135: 'only','omit','titleelement']);
136: #-------------------------------------------------------------------
137: my $closebutton='';
138: my $groupimportbutton='';
139: my $colspan='';
140:
141: $extrafield='';
142: my $diropendb =
143: "/home/httpd/perl/tmp/$ENV{'user.domain'}_$ENV{'user.name'}_indexer.db";
144: %hash = ();
145: {
146: my %dbfile;
147: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
148: while(my($key,$value)=each(%dbfile)) {
149: $hash{$key}=$value;
150: }
151: untie(%dbfile);
152: }
153: }
154: {
155: if ($ENV{'form.launch'} eq '1') {
156: &start_fresh_session();
157: }
158: # -------------------- refresh environment with user database values (in %hash)
159: &setvalues(\%hash,'form.catalogmode',\%ENV,'form.catalogmode' );
160:
161: # --------------------- define extra fields and buttons in case of special mode
162: if ($ENV{'form.catalogmode'} eq 'interactive') {
163: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
164: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
165: ' border="0" /></td>';
166: $colspan=" colspan='2' ";
167: my $cl=&mt('Close');
168: $closebutton=<<END;
169: <input type="button" name="close" value='$cl' onClick="self.close()">
170: END
171: }
172: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
173: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
174: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
175: ' border="0" /></td>';
176: $colspan=" colspan='2' ";
177: my $cl=&mt('Close');
178: my $gi=&mt('Group Import');
179: $closebutton=<<END;
180: <input type="button" name="close" value='$cl' onClick="self.close()">
181: END
182: $groupimportbutton=<<END;
183: <input type="button" name="groupimport" value='$gi'
184: onClick="javascript:select_group()">
185: END
186: }
187: # Additions made by Matthew to make the browser a little easier to deal
188: # with in the future.
189: #
190: # $mode (at this time) indicates if we are in edit mode.
191: # $form is the name of the form that the URL is placed when the
192: # selection is made.
193: # $element is the name of the element in $formname which receives
194: # the URL.
195: # &Apache::lonxml::debug('Checking mode, form, element');
196: &setvalues(\%hash,'form.mode' ,\%ENV,'form.mode' );
197: &setvalues(\%hash,'form.form' ,\%ENV,'form.form' );
198: &setvalues(\%hash,'form.element' ,\%ENV,'form.element');
199: &setvalues(\%hash,'form.titleelement',\%ENV,'form.titleelement');
200: &setvalues(\%hash,'form.only' ,\%ENV,'form.only' );
201: &setvalues(\%hash,'form.omit' ,\%ENV,'form.omit' );
202:
203: # Deal with 'omit' and 'only'
204: if (exists $ENV{'form.omit'}) {
205: @Omit = split(',',$ENV{'form.omit'});
206: }
207: if (exists $ENV{'form.only'}) {
208: @Only = split(',',$ENV{'form.only'});
209: }
210:
211: my $mode = $ENV{'form.mode'};
212: my ($form,$element,$titleelement);
213: if ($mode eq 'edit' || $mode eq 'parmset') {
214: $form = $ENV{'form.form'};
215: $element = $ENV{'form.element'};
216: $titleelement = $ENV{'form.titleelement'};
217: }
218: &Apache::lonxml::debug("mode=$mode form=$form element=$element
219: titleelement=$titleelement");
220: # ------ set catalogmodefunctions to have extra needed javascript functionality
221: my $catalogmodefunctions='';
222: if ($ENV{'form.catalogmode'} eq 'interactive' or
223: $ENV{'form.catalogmode'} eq 'groupimport') {
224: # The if statement below sets us up to use the old version
225: # by default (ie. if $mode is undefined). This is the easy
226: # way out. Hopefully in the future I'll find a way to get
227: # the calls dealt with in a more comprehensive manner.
228:
229: #
230: # There is now also mode "simple", which is for the simple version of the rat
231: #
232: #
233: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
234: my $location = "/adm/groupsort?catalogmode=groupimport&";
235: $location .= "mode=".$mode."&";
236: $location .= "acts=";
237: $catalogmodefunctions=<<"END";
238: function select_data(title,url) {
239: changeTitle(title);
240: changeURL(url);
241: self.close();
242: }
243: function select_group() {
244: window.location="$location"+document.forms.fileattr.acts.value;
245: }
246: function changeTitle(val) {
247: if (opener.inf) {
248: if (opener.inf.document.forms.resinfo.elements.t) {
249: opener.inf.document.forms.resinfo.elements.t.value=val;
250: }
251: }
252: }
253: function changeURL(val) {
254: if (opener.inf) {
255: if (opener.inf.document.forms.resinfo.elements.u) {
256: opener.inf.document.forms.resinfo.elements.u.value=val;
257: }
258: }
259: }
260: END
261: } elsif ($mode eq 'edit') { # we are in 'edit' mode
262: my $location = "/adm/groupsort?catalogmode=interactive&";
263: $location .= "form=$form&element=$element&mode=edit&acts=";
264: $catalogmodefunctions=<<END;
265: // mode = $mode
266: function select_data(title,url) {
267: changeURL(url);
268: changeTitle(title);
269: self.close();
270: }
271:
272: function select_group() {
273: window.location="$location"+document.forms.fileattr.acts.value;
274: }
275:
276: function changeURL(val) {
277: if (window.opener.document) {
278: window.opener.document.forms["$form"].elements["$element"].value=val;
279: } else {
280: alert("The file you selected is: "+val);
281: }
282: }
283: END
284: if (!$titleelement) {
285: $catalogmodefunctions.='function changeTitle(val) {}';
286: } else {
287: $catalogmodefunctions.=<<END;
288: function changeTitle(val) {
289: if (window.opener.document) {
290: window.opener.document.forms["$form"].elements["$titleelement"].value=val;
291: } else {
292: alert("The title of the file you selected is: "+val);
293: }
294: }
295: END
296: }
297: } elsif ($mode eq 'parmset') {
298: my $location = "/adm/groupsort?catalogmode=interactive&";
299: $location .= "form=$form&element=$element&mode=parmset&acts=";
300: $catalogmodefunctions=<<END;
301: // mode = $mode
302: function select_data(title,url) {
303: changeURL(url);
304: self.close();
305: }
306:
307: function select_group() {
308: window.location="$location"+document.forms.fileattr.acts.value;
309: }
310:
311: function changeURL(val) {
312: if (window.opener.document) {
313: var elementname = "$element"+"_value";
314: var checkboxname = "$element"+"_setparmval";
315: window.opener.document.forms["$form"].elements[elementname].value=val;
316: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
317: } else {
318: alert("The file you selected is: "+val);
319: }
320: }
321:
322: END
323: }
324: }
325: $catalogmodefunctions.=<<END;
326: var acts='';
327: function rep_dirpath(suffix,val) {
328: eval("document.forms.dirpath"+suffix+".acts.value=val");
329: }
330: END
331: if ($ENV{'form.catalogmode'} eq 'groupimport') {
332: $catalogmodefunctions.=<<END;
333: function queue(val) {
334: if (eval("document.forms."+val+".filelink.checked")) {
335: var l=val.length;
336: var v=val.substring(4,l);
337: document.forms.fileattr.acts.value+='1a'+v+'b';
338: }
339: else {
340: var l=val.length;
341: var v=val.substring(4,l);
342: document.forms.fileattr.acts.value+='0a'+v+'b';
343: }
344: }
345: END
346: }
347:
348: # ---------------------------------------------------------------- Print Header
349: $r->print(<<ENDHEADER);
350: <html>
351: <head>
352: <title>The LearningOnline Network With CAPA Directory Browser</title>
353:
354: <script type="text/javascript">
355: $catalogmodefunctions
356: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
357: var xpos = (screen.width-w)/2;
358: xpos = (xpos < 0) ? '0' : xpos;
359: var ypos = (screen.height-h)/2-30;
360: ypos = (ypos < 0) ? '0' : ypos;
361: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
362: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
363: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
364: var newWin = window.open(url, wdwName, options);
365: newWin.focus();
366: }
367: function gothere(val) {
368: window.location=val+'?acts='+document.forms.fileattr.acts.value;
369: }
370: </script>
371:
372: </head>
373: ENDHEADER
374: my ($headerdom)=($uri=~/^\/res\/(\w+)\//);
375: $r->print(&Apache::loncommon::bodytag('Browse Resources',undef,undef,undef,
376: $headerdom));
377: # - Evaluate actions from previous page (both cumulatively and chronologically)
378: if ($ENV{'form.catalogmode'} eq 'groupimport') {
379: my $acts=$ENV{'form.acts'};
380: my @Acts=split(/b/,$acts);
381: my %ahash;
382: my %achash;
383: my $ac=0;
384: # some initial hashes for working with data
385: foreach (@Acts) {
386: my ($state,$ref)=split(/a/);
387: $ahash{$ref}=$state;
388: $achash{$ref}=$ac;
389: $ac++;
390: }
391: # sorting through the actions and changing the tied database hash
392: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
393: my $key=$_;
394: if ($ahash{$key} eq '1') {
395: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
396: $hash{'pre_'.$key.'_title'};
397: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
398: $hash{'storectr'}+0;
399: $hash{'storectr'}++;
400: }
401: if ($ahash{$key} eq '0') {
402: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
403: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
404: }
405: }
406: }
407: # deleting the previously cached listing
408: foreach (keys %hash) {
409: if ($_ =~ /^pre_/ && $_ =~/link$/) {
410: my $key = $_;
411: $key =~ s/^pre_//;
412: $key =~ s/_[^_]*$//;
413: delete $hash{'pre_'.$key.'_title'};
414: delete $hash{'pre_'.$key.'_link'};
415: }
416: }
417: }
418:
419: # ---------------------------------- get state of file attributes to be showing
420: if ($ENV{'form.attrs'} ne '') {
421: for (my $i=0; $i<=9; $i++) {
422: delete $hash{'display_attrs_'.$i};
423: if ($ENV{'form.attr'.$i} == 1) {
424: $attrchk[$i] = 'checked';
425: $hash{'display_attrs_'.$i} = 1;
426: }
427: }
428: } else {
429: for (my $i=0; $i<=9; $i++) {
430: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
431: }
432: }
433: # ------------------------------- output state of file attributes to be showing
434: # All versions has to the last item
435: # since it does not take an extra col
436: my %lt=&Apache::lonlocal::texthash(
437: 'ti' => 'Title',
438: 'si' => 'Size',
439: 'la' => 'Last access',
440: 'lm' => 'Last modified',
441: 'st' => 'Statistics',
442: 'au' => 'Author',
443: 'kw' => 'Keywords',
444: 'ln' => 'Language',
445: 'sr' => 'Show resource',
446: 'av' => 'All versions',
447: 'ud' => 'Update Display'
448: );
449: my $Displayfileattributes=&mt('Display file attributes');
450: $r->print(<<END);
451: <form method="post" name="fileattr" action="$uri"
452: enctype="application/x-www-form-urlencoded">
453: <b><font color="#666666">$Displayfileattributes</font></b><br />
454: <table border=0><tr>
455: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> $lt{'ti'}</td>
456: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> $lt{'si'}</td>
457: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> $lt{'la'}</td>
458: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> $lt{'lm'}</td>
459: <td><input type="checkbox" name="attr8" value="1" $attrchk[8] /> $lt{'st'}</td>
460: </tr><tr>
461: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> $lt{'au'}</td>
462: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> $lt{'kw'}</td>
463: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> $lt{'ln'}</td>
464: <td><input type="checkbox" name="attr7" value="1" $attrchk[7] /> $lt{'sr'}</td>
465: <td><input type="checkbox" name="attr9" value="1" $attrchk[9] /> $lt{'av'}</td>
466: <td> </td>
467: </tr></table>
468: <input type="hidden" name="dirPointer" value="on" />
469: <input type="hidden" name="acts" value="" />
470: <input type="submit" name="attrs" value="$lt{'ud'}" />
471: $closebutton
472: $groupimportbutton
473: </form>
474: END
475: # ---------------------------------------------------------------- Bread crumbs
476: $r->print(&crumbs($uri));
477: # ----------------- output starting row to the indexed file/directory hierarchy
478: my $titleclr="#ddffff";
479: # $r->print(&initdebug());
480: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
481: # $r->print(&writedebug("Only:@Only")) if (@Only);
482: $r->print("<table width='100\%' border=0><tr><td bgcolor=#777777>\n");
483: $r->print("<table width='100\%' border=0><tr bgcolor=$titleclr>\n");
484: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
485: $r->print("<td><b>".&mt('Title')."</b></td>\n")
486: if ($hash{'display_attrs_0'} == 1);
487: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
488: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
489: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
490: if ($hash{'display_attrs_2'} == 1);
491: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
492: if ($hash{'display_attrs_3'} == 1);
493: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
494: if ($hash{'display_attrs_4'} == 1);
495: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
496: if ($hash{'display_attrs_5'} == 1);
497: $r->print("<td><b>".&mt("Language")."</b></td>\n")
498: if ($hash{'display_attrs_6'} == 1);
499: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
500: if ($hash{'display_attrs_7'} == 1);
501: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
502: &mt("Courses/Network Hits").")</b></td>\n")
503: if ($hash{'display_attrs_8'} == 1);
504: $r->print('</tr>');
505:
506: # ----------------- read in what directories have previously been set to "open"
507: foreach (keys %hash) {
508: if ($_ =~ /^diropen_status_/) {
509: my $key = $_;
510: $key =~ s/^diropen_status_//;
511: $dirs{$key} = $hash{$_};
512: }
513: }
514:
515: if ($ENV{'form.openuri'}) { # take care of review and refresh options
516: my $uri=$ENV{'form.openuri'};
517: if (exists($hash{'diropen_status_'.$uri})) {
518: my $cursta = $hash{'diropen_status_'.$uri};
519: $dirs{$uri} = 'open';
520: $hash{'diropen_status_'.$uri} = 'open';
521: if ($cursta eq 'open') {
522: $dirs{$uri} = 'closed';
523: $hash{'diropen_status_'.$uri} = 'closed';
524: }
525: } else {
526: $hash{'diropen_status_'.$uri} = 'open';
527: $dirs{$uri} = 'open';
528: }
529: }
530:
531: my $bredir = $ENV{'form.dirPointer'};
532: my $toplevel;
533: my $indent = 0;
534: $uri = $uri.'/' if $uri !~ /.*\/$/;
535:
536: if ($bredir ne 'on') {
537: $hash{'top.level'} = $uri;
538: $toplevel = $uri;
539:
540: } else {
541: $toplevel = $hash{'top.level'};
542: }
543:
544: # -------------------------------- if not at top level, provide an uplink arrow
545: if ($toplevel ne '/res/'){
546: my (@uri_com) = split(/\//,$uri);
547: pop @uri_com;
548: my $upone = join('/',@uri_com);
549: my @list = qw (0);
550: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
551: $indent = 1;
552: }
553:
554: # -------- recursively go through all the directories and output as appropriate
555: &scanDir ($r,$toplevel,$indent,\%hash);
556:
557: # ---------------------------- embed hidden information useful for group import
558: $r->print("<form name='fnum'>");
559: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
560:
561: # -------------------------------------------------------------- end the tables
562: $r->print('</table>');
563: $r->print('</td></tr></table>');
564:
565: # --------------------------------------------------- end the output and return
566: $r->print('</body></html>'."\n");
567: # } else {
568: # $r->print('<html><head></head><body>Unable to tie hash to db '.
569: # 'file</body></html>');
570: # return OK;
571: }
572: if(! $c->aborted()) {
573: my %dbfile;
574: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
575: while (my($key,$value) = each(%hash)) {
576: $dbfile{$key}=$value;
577: }
578: untie(%dbfile);
579: }
580: }
581:
582: return OK;
583: }
584:
585: # ----------------------------------------------- recursive scan of a directory
586: sub scanDir {
587: my ($r,$startdir,$indent,$hashref)=@_;
588: my $c = $r->connection();
589: my ($compuri,$curdir);
590: my $dirptr=16384;
591: $indent++;
592:
593: my %dupdirs = %dirs;
594: my @list=&get_list($r,$startdir);
595: foreach my $line (@list) {
596: return if ($c->aborted());
597: my ($strip,$dom,undef,$testdir,undef)=split(/\&/,$line,5);
598: next if $strip =~ /.*\.meta$/;
599: my (@fileparts) = split(/\./,$strip);
600: if ($hash{'display_attrs_9'} != 1) {
601: if (scalar(@fileparts) >= 3) {
602: my $fext = pop @fileparts;
603: my $ov = pop @fileparts;
604: my $fname = join ('.',@fileparts,$fext);
605: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
606: }
607: }
608:
609: if ($dom eq 'domain') {
610: # dom list has full path /res/<domain name>/ already
611: $curdir='';
612: $compuri = (split(/\&/,$line))[0];
613: } else {
614: # user, dir & file have name only, i.e., w/o path
615: $compuri = join('',$startdir,$strip,'/');
616: $curdir = $startdir;
617: }
618: my $diropen = 'closed';
619: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
620: while (my ($key,$val)= each %dupdirs) {
621: if ($key eq $compuri and $val eq "open") {
622: $diropen = "opened";
623: delete($dupdirs{$key});
624: delete($dirs{$key});
625: }
626: }
627: }
628: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
629: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
630: }
631: $indent--;
632: }
633:
634: # --------------- get complete matched list based on the uri (returns an array)
635: sub get_list {
636: my ($r,$uri)=@_;
637: my @list;
638: (my $luri = $uri) =~ s/\//_/g;
639:
640: if ($ENV{'form.attrs'} eq &mt('Update Display')) {
641: foreach (keys %hash) {
642: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
643: }
644: }
645:
646: if ($hash{'dirlist_files'.$luri}) {
647: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
648: } else {
649: @list = &Apache::lonnet::dirlist($uri);
650: $hash{'dirlist_files_'.$luri} = join('\n',@list);
651: }
652: return @list=&match_ext($r,@list);
653: }
654:
655: sub initdebug {
656: return <<ENDJS;
657: <script>
658: var debugging = true;
659: if (debugging) {
660: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
661: }
662:
663: function output(text) {
664: if (debugging) {
665: debuggingWindow.document.writeln(text);
666: }
667: }
668: output("<html><head><title>Debugging Window</title></head><body><pre>");
669: </script>
670: ENDJS
671: }
672:
673: sub writedebug {
674: my $text = shift;
675: return "<script>output('$text');</script>";
676: }
677:
678: # -------------------- filters out files based on extensions (returns an array)
679: sub match_ext {
680: my ($r,@packlist)=@_;
681: my @trimlist;
682: my $nextline;
683: my @fileext;
684: my $dirptr=16384;
685:
686: foreach my $line (@packlist) {
687: chomp $line;
688: $line =~ s/^\/home\/httpd\/html//;
689: my @unpackline = split (/\&/,$line);
690: next if ($unpackline[0] eq '.');
691: next if ($unpackline[0] eq '..');
692: my @filecom = split (/\./,$unpackline[0]);
693: my $fext = pop(@filecom);
694: my $fnptr = $unpackline[3]&$dirptr;
695: if ($fnptr == 0 and $unpackline[3] ne "") {
696: my $embstyle = &Apache::loncommon::fileembstyle($fext);
697: push @trimlist,$line if (defined($embstyle) &&
698: ($embstyle ne 'hdn' or $fext eq 'meta'));
699: } else {
700: push @trimlist,$line;
701: }
702: }
703: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
704: return @trimlist;
705: }
706:
707: # ------------------------------- displays one line in appropriate table format
708: sub display_line {
709: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
710: my (@pathfn, $fndir);
711: my $dirptr=16384;
712: my $fileclr="#ffffe6";
713: my $iconpath= $r->dir_config('lonIconsURL') . '/';
714:
715: my @filecom = split (/\&/,$line);
716: my @pathcom = split (/\//,$filecom[0]);
717: my $listname = $pathcom[scalar(@pathcom)-1];
718: my $fnptr = $filecom[3]&$dirptr;
719: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
720: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
721:
722: my $tabtag='</td>';
723: my $i=0;
724:
725: while ($i<=8) {
726: $tabtag=join('',$tabtag,"<td> </td>")
727: if $hash{'display_attrs_'.$i} == 1;
728: $i++;
729: }
730:
731: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
732:
733: # display uplink arrow
734: if ($filecom[1] eq 'viewOneUp') {
735: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
736: $r->print("<td>\n");
737: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
738: '/" '.
739: 'onSubmit="return rep_dirpath(\'UP\','.
740: 'document.forms.fileattr.acts.value)" '.
741: 'enctype="application/x-www-form-urlencoded"'.
742: '>'."\n");
743: $r->print ('<input type=hidden name=openuri value="'.
744: $startdir.'">'."\n");
745: $r->print ('<input type="hidden" name="acts" value="">'."\n");
746: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
747: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
748: "\n");
749: $r->print(&mt("Up")." $tabtag</tr></form>\n");
750: return OK;
751: }
752: # Do we have permission to look at this?
753:
754: return OK if (!&Apache::lonnet::allowed('bre',$startdir.$filecom[0]));
755:
756: # display domain
757: if ($filecom[1] eq 'domain') {
758: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
759: if ($ENV{'form.dirPointer'} eq "on");
760: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
761: $r->print("<td>");
762: &begin_form ($r,$filecom[0]);
763: my $anchor = $filecom[0];
764: $anchor =~ s/\///g;
765: $r->print ('<a name="'.$anchor.'">');
766: $r->print ('<input type="hidden" name="acts" value="">');
767: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
768: $diropen.'.gif"');
769: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
770: "\n");
771: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
772: '\')"><img src="'.$iconpath.'server.gif"');
773: $r->print (' border="0" /></a>'."\n");
774: $r->print (&mt("Domain")." - $listname ");
775: if ($Apache::lonnet::domaindescription{$listname}) {
776: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
777: ")");
778: }
779: $r->print (" $tabtag</tr></form>\n");
780: return OK;
781:
782: # display user directory
783: }
784: if ($filecom[1] eq 'user') {
785: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
786: $r->print("<td nowrap>\n");
787: my $curdir = $startdir.$filecom[0].'/';
788: my $anchor = $curdir;
789: $anchor =~ s/\///g;
790: &begin_form ($r,$curdir);
791: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
792: 'whitespace1.gif" border="0" />'."\n");
793: $r->print ('<input type="hidden" name="acts" value="">');
794: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
795: '.gif"');
796: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
797: "\n");
798: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
799: $iconpath.'quill.gif border="0" name="'.$msg.
800: '" height="22" /></a>');
801: my $domain=(split(m|/|,$startdir))[2];
802: my $plainname=&Apache::loncommon::plainname($listname,$domain);
803: $r->print ($listname);
804: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
805: $r->print ($tabtag.'</tr></form>'."\n");
806: return OK;
807: }
808:
809: # display file
810: if ($fnptr == 0 and $filecom[3] ne '') {
811: my $filelink = $startdir.$filecom[0];
812: next if &Apache::lonnet::metadata($filelink,'obsolete');
813: my @file_ext = split (/\./,$listname);
814: my $curfext = $file_ext[-1];
815: if (@Omit) {
816: foreach (@Omit) { return OK if ($curfext eq $_); }
817: }
818: if (@Only) {
819: my $skip = 1;
820: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
821: return OK if ($skip > 0);
822: }
823: # Set the icon for the file
824: my $iconname = "unknown.gif";
825: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
826: # The unless conditional that follows is a bit of overkill
827: $iconname = $curfext.".gif" unless
828: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
829: #
830: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap>");
831: my $metafile = grep /^\Q$filecom[0]\E\.meta\&/, @list;
832: my $title;
833: if ($ENV{'form.catalogmode'} eq 'interactive') {
834: $title=$listname;
835: $title = &Apache::lonnet::metadata($filelink,'title')
836: if ($metafile == 1);
837: $title=$listname unless $title;
838: my $titleesc=HTML::Entities::encode($title);
839: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
840: $r->print("<a href=\"javascript:select_data(\'",
841: $titleesc,"','",$filelink,"')\">");
842: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
843: "\n");
844: $r->print("</td><td nowrap>");
845: }
846: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
847: $title=$listname;
848: $title = &Apache::lonnet::metadata($filelink,'title')
849: if ($metafile == 1);
850: $title=$listname unless $title;
851: my $titleesc=&HTML::Entities::encode($title);
852: $r->print("<form name='form$fnum'>\n");
853: $r->print("<input type='checkbox' name='filelink"."' ".
854: "value='$filelink' onClick='".
855: "javascript:queue(\"form$fnum\")' ");
856: if ($hash{'store_'.$filelink}) {
857: $r->print("checked");
858: }
859: $r->print(">\n");
860: $r->print("<input type='hidden' name='title"."' ".
861: "value='$titleesc'>\n");
862: $r->print("</form>\n");
863: $r->print("</td><td nowrap>");
864: $hash{"pre_${fnum}_link"}=$filelink;
865: $hash{"pre_${fnum}_title"}=$titleesc;
866: $fnum++;
867: }
868:
869: if ($indent > 0 and $indent < 11) {
870: $r->print("<img src=",$iconpath,"whitespace",$indent,
871: ".gif border='0' />\n");
872: } elsif ($indent >0) {
873: my $ten = int($indent/10.);
874: my $rem = $indent%10.0;
875: my $count = 0;
876: while ($count < $ten) {
877: $r->print("<img src=",$iconpath,
878: "whitespace10.gif border='0' />\n");
879: $count++;
880: }
881: $r->print("<img src=",$iconpath,"whitespace",$rem,
882: ".gif border='0' />\n") if $rem > 0;
883: }
884:
885: $r->print("<img src=$iconpath$iconname border='0' />\n");
886: $r->print (" <a href=\"javascript:openWindow('".$filelink.
887: "', 'previewfile', '450', '500', 'no', 'yes','yes')\";".
888: " TARGET=_self>$listname</a> ");
889:
890: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
891: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no')\"; ".
892: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
893:
894: $r->print("</td>\n");
895: if ($hash{'display_attrs_0'} == 1) {
896: my $title = &Apache::lonnet::gettitle($filelink,'title')
897: if ($metafile == 1);
898: $r->print('<td> '.($title eq '' ? ' ' : $title).
899: ' </td>'."\n");
900: }
901: $r->print('<td align=right> ',
902: $filecom[8]," </td>\n")
903: if $hash{'display_attrs_1'} == 1;
904: $r->print('<td> '.
905: (localtime($filecom[9]))." </td>\n")
906: if $hash{'display_attrs_2'} == 1;
907: $r->print('<td> '.
908: (localtime($filecom[10]))." </td>\n")
909: if $hash{'display_attrs_3'} == 1;
910:
911: if ($hash{'display_attrs_4'} == 1) {
912: my $author = &Apache::lonnet::metadata($filelink,'author')
913: if ($metafile == 1);
914: $r->print('<td> '.($author eq '' ? ' ' : $author).
915: " </td>\n");
916: }
917: if ($hash{'display_attrs_5'} == 1) {
918: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
919: if ($metafile == 1);
920: # $keywords = ' ' if (!$keywords);
921: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
922: " </td>\n");
923: }
924: if ($hash{'display_attrs_6'} == 1) {
925: my $lang = &Apache::lonnet::metadata($filelink,'language')
926: if ($metafile == 1);
927: $lang = &Apache::loncommon::languagedescription($lang);
928: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
929: " </td>\n");
930: }
931: if ($hash{'display_attrs_7'} == 1) {
932: my $output='';
933: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
934: if ($embstyle eq 'ssi') {
935: $output=&Apache::lonnet::ssi_body($filelink);
936: $output='<font size="-2">'.$output.'</font>';
937: } elsif ($embstyle eq 'img') {
938: $output='<img src="'.$filelink.'" />';
939: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
940: $output='<img src="http://'.
941: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
942: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
943: }
944: $r->print('<td> '.($output eq '' ? ' ':$output).
945: " </td>\n");
946: }
947: if ($hash{'display_attrs_8'} == 1) {
948: my (%stat) = &Apache::lonmeta::dynamicmeta($filelink) if ($metafile == 1);
949: my $stat = (exists($stat{'course'}) ? $stat{'course'} : '').
950: ((exists($stat{'course'}) || exists($stat{'count'})) ? '/' : '').
951: (exists($stat{'count'}) ? $stat{'count'} : '');
952: $r->print('<td align=center> '.($stat eq '' ? ' ' : $stat).
953: ' </td>'."\n");
954: }
955:
956: $r->print("</tr>\n");
957: }
958:
959: # -- display directory
960: if ($fnptr == $dirptr) {
961: my @file_ext = split (/\./,$listname);
962: my $curfext = $file_ext[scalar(@file_ext)-1];
963: my $curdir = $startdir.$filecom[0].'/';
964: my $anchor = $curdir;
965: $anchor =~ s/\///g;
966: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
967: &begin_form ($r,$curdir);
968: my $indentm1 = $indent-1;
969: if ($indentm1 < 11 and $indentm1 > 0) {
970: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
971: ".gif border='0' />\n");
972: } else {
973: my $ten = int($indentm1/10.);
974: my $rem = $indentm1%10.0;
975: my $count = 0;
976: while ($count < $ten) {
977: $r->print ("<img src=",$iconpath
978: ,"whitespace10.gif border='0' />\n");
979: $count++;
980: }
981: $r->print ("<img src=",$iconpath,"whitespace",$rem,
982: ".gif border='0' />\n") if $rem > 0;
983: }
984: $r->print ('<input type="hidden" name="acts" value="">');
985: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
986: 'folder_pointer_'.$diropen.'.gif"');
987: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
988: "\n");
989: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
990: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
991: "\n");
992: $r->print ("$listname$tabtag</tr></form>\n");
993: }
994:
995: }
996:
997: # ------------------- prints the beginning of a form for directory or file link
998: sub begin_form {
999: my ($r,$uri) = @_;
1000: my $anchor = $uri;
1001: $anchor =~ s/\///g;
1002: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1003: '#'.$anchor.
1004: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1005: ',document.forms.fileattr.acts.value)" '.
1006: 'enctype="application/x-www-form-urlencoded">'."\n");
1007: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
1008: "\n");
1009: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
1010: $dnum++;
1011: }
1012:
1013: # --------- settings whenever the user causes the indexer window to be launched
1014: sub start_fresh_session {
1015: delete $hash{'form.catalogmode'};
1016: delete $hash{'form.mode'};
1017: delete $hash{'form.form'};
1018: delete $hash{'form.element'};
1019: delete $hash{'form.omit'};
1020: delete $hash{'form.only'};
1021: foreach (keys %hash) {
1022: delete $hash{$_} if (/^(pre_|store)/);
1023: }
1024: }
1025:
1026: # ------------------------------------------------------------------- setvalues
1027: sub setvalues {
1028: # setvalues is used in registerurl to synchronize the database
1029: # hash and environment hashes
1030: my ($H1,$h1key,$H2,$h2key) =@_;
1031: #
1032: if (exists $H2->{$h2key}) {
1033: $H1->{$h1key} = $H2->{$h2key};
1034: } elsif (exists $H1->{$h1key}) {
1035: $H2->{$h2key} = $H1->{$h1key};
1036: }
1037: }
1038:
1039: 1;
1040:
1041: sub cleanup {
1042: if (tied(%hash)){
1043: &Apache::lonnet::logthis('Cleanup indexer: hash');
1044: }
1045: }
1046:
1047: =head1 NAME
1048:
1049: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1050:
1051: =head1 SYNOPSIS
1052:
1053: Invoked by /etc/httpd/conf/srm.conf:
1054:
1055: <LocationMatch "^/res.*/$">
1056: SetHandler perl-script
1057: PerlHandler Apache::lonindexer
1058: </LocationMatch>
1059:
1060: =head1 INTRODUCTION
1061:
1062: This module enables a scheme of browsing across a cross server.
1063:
1064: This is part of the LearningOnline Network with CAPA project
1065: described at http://www.lon-capa.org.
1066:
1067: =head1 BEGIN SUBROUTINE
1068:
1069: This routine is only run once after compilation.
1070:
1071: =over 4
1072:
1073: =item *
1074:
1075: Initializes %language hash table.
1076:
1077: =back
1078:
1079: =head1 HANDLER SUBROUTINE
1080:
1081: This routine is called by Apache and mod_perl.
1082:
1083: =over 4
1084:
1085: =item *
1086:
1087: read in machine configuration variables
1088:
1089: =item *
1090:
1091: see if called from an interactive mode
1092:
1093: =item *
1094:
1095: refresh environment with user database values (in %hash)
1096:
1097: =item *
1098:
1099: define extra fields and buttons in case of special mode
1100:
1101: =item *
1102:
1103: set catalogmodefunctions to have extra needed javascript functionality
1104:
1105: =item *
1106:
1107: print header
1108:
1109: =item *
1110:
1111: evaluate actions from previous page (both cumulatively and chronologically)
1112:
1113: =item *
1114:
1115: output title
1116:
1117: =item *
1118:
1119: get state of file attributes to be showing
1120:
1121: =item *
1122:
1123: output state of file attributes to be showing
1124:
1125: =item *
1126:
1127: output starting row to the indexed file/directory hierarchy
1128:
1129: =item *
1130:
1131: read in what directories have previously been set to "open"
1132:
1133: =item *
1134:
1135: if not at top level, provide an uplink arrow
1136:
1137: =item *
1138:
1139: recursively go through all the directories and output as appropriate
1140:
1141: =item *
1142:
1143: information useful for group import
1144:
1145: =item *
1146:
1147: end the tables
1148:
1149: =item *
1150:
1151: end the output and return
1152:
1153: =back
1154:
1155: =head1 OTHER SUBROUTINES
1156:
1157: =over 4
1158:
1159: =item *
1160:
1161: scanDir - recursive scan of a directory
1162:
1163: =item *
1164:
1165: get_list - get complete matched list based on the uri (returns an array)
1166:
1167: =item *
1168:
1169: match_ext - filters out files based on extensions (returns an array)
1170:
1171: =item *
1172:
1173: display_line - displays one line in appropriate table format
1174:
1175: =item *
1176:
1177: begin_form - prints the beginning of a form for directory or file link
1178:
1179: =item *
1180:
1181: start_fresh_session - settings whenever the user causes the indexer window
1182: to be launched
1183:
1184: =back
1185:
1186: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonindexer.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface