1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.54 2003/01/09 22:04:28 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: # 5/31,6/1,6/2,6/15 Scott Harrison
38: # 6/26,7/8 H. K. Ng
39: # 8/6,8/7,8/10 Scott Harrison
40: # 8/14 H. K. Ng
41: # 8/28,10/15,11/28,11/29 Scott Harrison
42: # 11/30 Matthew Hall
43: # 12/11,12/13 Scott Harrison
44: # YEAR=2002
45: # 1/17 Scott Harrison
46: # 6/29/2002 H. K. Ng
47: #
48: ###
49:
50: ###############################################################################
51: ## ##
52: ## ORGANIZATION OF THIS PERL MODULE ##
53: ## ##
54: ## 1. Description of functions ##
55: ## 2. Modules used by this module ##
56: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
57: ## 4. BEGIN block (to be run once after compilation) ##
58: ## 5. Handling routine called via Apache and mod_perl ##
59: ## 6. Other subroutines ##
60: ## ##
61: ###############################################################################
62:
63: package Apache::lonindexer;
64:
65: # ------------------------------------------------- modules used by this module
66: use strict;
67: use Apache::lonnet();
68: use Apache::loncommon();
69: use Apache::Constants qw(:common);
70: use Apache::File;
71: use GDBM_File;
72:
73: # ---------------------------------------- variables used throughout the module
74: my %hash; # tied to a user-specific gdbm file
75: my %dirs; # keys are directories, values are the open/close status
76: my %language; # has the reference information present in language.tab
77:
78: # ----- Values which are set by the handler subroutine and are accessible to
79: # ----- other methods.
80: my $extrafield; # default extra table cell
81: my $fnum; # file counter
82: my $dnum; # directory counter
83:
84: # ----- Used to include or exclude files with certain extensions.
85: my @Only = ();
86: my @Omit = ();
87:
88:
89: # ----------------------------- Handling routine called via Apache and mod_perl
90: sub handler {
91: my $r = shift;
92: $r->content_type('text/html');
93: &Apache::loncommon::no_cache($r);
94: $r->send_http_header;
95: return OK if $r->header_only;
96: $fnum=0;
97: $dnum=0;
98: untie %hash;
99:
100: # Deal with stupid global variables (is there a way around making
101: # these global to this package? It is just so wrong....)
102: undef (@Only);
103: undef (@Omit);
104:
105: # ------------------------------------- read in machine configuration variables
106: my $iconpath= $r->dir_config('lonIconsURL') . "/";
107: my $domain = $r->dir_config('lonDefDomain');
108: my $role = $r->dir_config('lonRole');
109: my $loadlim = $r->dir_config('lonLoadLim');
110: my $servadm = $r->dir_config('lonAdmEMail');
111: my $sysadm = $r->dir_config('lonSysEMail');
112: my $lonhost = $r->dir_config('lonHostID');
113: my $tabdir = $r->dir_config('lonTabDir');
114:
115: my $fileclr='#ffffe6';
116: my $line;
117: my (@attrchk,@openpath);
118: my $uri=$r->uri;
119:
120: # -------------------------------------- see if called from an interactive mode
121: # Get the parameters from the query string
122: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
123: ['catalogmode','launch','acts','mode','form','element',
124: 'only','omit']);
125: #-------------------------------------------------------------------
126: my $closebutton='';
127: my $groupimportbutton='';
128: my $colspan='';
129:
130: $extrafield='';
131: my $diropendb =
132: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
133:
134: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
135: if ($ENV{'form.launch'} eq '1') {
136: &start_fresh_session();
137: }
138: # -------------------- refresh environment with user database values (in %hash)
139: &setvalues(\%hash,'form.catalogmode',\%ENV,'form.catalogmode' );
140:
141: # --------------------- define extra fields and buttons in case of special mode
142: if ($ENV{'form.catalogmode'} eq 'interactive') {
143: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
144: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
145: ' border="0" /></td>';
146: $colspan=" colspan='2' ";
147: $closebutton=<<END;
148: <input type="button" name="close" value='CLOSE' onClick="self.close()">
149: END
150: }
151: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
152: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
153: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
154: ' border="0" /></td>';
155: $colspan=" colspan='2' ";
156: $closebutton=<<END;
157: <input type="button" name="close" value='CLOSE' onClick="self.close()">
158: END
159: $groupimportbutton=<<END;
160: <input type="button" name="groupimport" value='GROUP IMPORT'
161: onClick="javascript:select_group()">
162: END
163: }
164: # Additions made by Matthew to make the browser a little easier to deal
165: # with in the future.
166: #
167: # $mode (at this time) indicates if we are in edit mode.
168: # $form is the name of the form that the URL is placed when the
169: # selection is made.
170: # $element is the name of the element in $formname which receives
171: # the URL.
172: # &Apache::lonxml::debug('Checking mode, form, element');
173: &setvalues(\%hash,'form.mode' ,\%ENV,'form.mode' );
174: &setvalues(\%hash,'form.form' ,\%ENV,'form.form' );
175: &setvalues(\%hash,'form.element',\%ENV,'form.element');
176: &setvalues(\%hash,'form.only' ,\%ENV,'form.only' );
177: &setvalues(\%hash,'form.omit' ,\%ENV,'form.omit' );
178:
179: # Deal with 'omit' and 'only'
180: if (exists $ENV{'form.omit'}) {
181: @Omit = split(',',$ENV{'form.omit'});
182: }
183: if (exists $ENV{'form.only'}) {
184: @Only = split(',',$ENV{'form.only'});
185: }
186:
187: my $mode = $ENV{'form.mode'};
188: my ($form,$element);
189: if ($mode eq 'edit' || $mode eq 'parmset') {
190: $form = $ENV{'form.form'};
191: $element = $ENV{'form.element'};
192: }
193: &Apache::lonxml::debug("mode=$mode form=$form element=$element");
194: # ------ set catalogmodefunctions to have extra needed javascript functionality
195: my $catalogmodefunctions='';
196: if ($ENV{'form.catalogmode'} eq 'interactive' or
197: $ENV{'form.catalogmode'} eq 'groupimport') {
198: # The if statement below sets us up to use the old version
199: # by default (ie. if $mode is undefined). This is the easy
200: # way out. Hopefully in the future I'll find a way to get
201: # the calls dealt with in a more comprehensive manner.
202:
203: #
204: # There is now also mode "simple", which is for the simple version of the rat
205: #
206: #
207: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
208: my $location = "/adm/groupsort?catalogmode=groupimport&";
209: $location .= "mode=".$mode."&";
210: $location .= "acts=";
211: $catalogmodefunctions=<<"END";
212: function select_data(title,url) {
213: changeTitle(title);
214: changeURL(url);
215: self.close();
216: }
217: function select_group() {
218: window.location="$location"+document.forms.fileattr.acts.value;
219: }
220: function changeTitle(val) {
221: if (opener.inf) {
222: if (opener.inf.document.forms.resinfo.elements.t) {
223: opener.inf.document.forms.resinfo.elements.t.value=val;
224: }
225: }
226: }
227: function changeURL(val) {
228: if (opener.inf) {
229: if (opener.inf.document.forms.resinfo.elements.u) {
230: opener.inf.document.forms.resinfo.elements.u.value=val;
231: }
232: }
233: }
234: END
235: } elsif ($mode eq 'edit') { # we are in 'edit' mode
236: my $location = "/adm/groupsort?catalogmode=interactive&";
237: $location .= "form=$form&element=$element&mode=edit&acts=";
238: $catalogmodefunctions=<<END;
239: // mode = $mode
240: function select_data(title,url) {
241: changeURL(url);
242: self.close();
243: }
244:
245: function select_group() {
246: window.location="$location"+document.forms.fileattr.acts.value;
247: }
248:
249: function changeURL(val) {
250: if (window.opener.document) {
251: window.opener.document.forms["$form"].elements["$element"].value=val;
252: } else {
253: alert("The file you selected is: "+val);
254: }
255: }
256:
257: END
258: } elsif ($mode eq 'parmset') {
259: my $location = "/adm/groupsort?catalogmode=interactive&";
260: $location .= "form=$form&element=$element&mode=parmset&acts=";
261: $catalogmodefunctions=<<END;
262: // mode = $mode
263: function select_data(title,url) {
264: changeURL(url);
265: self.close();
266: }
267:
268: function select_group() {
269: window.location="$location"+document.forms.fileattr.acts.value;
270: }
271:
272: function changeURL(val) {
273: if (window.opener.document) {
274: var elementname = "$element"+"_value";
275: var checkboxname = "$element"+"_setparmval";
276: window.opener.document.forms["$form"].elements[elementname].value=val;
277: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
278: } else {
279: alert("The file you selected is: "+val);
280: }
281: }
282:
283: END
284: }
285: }
286: $catalogmodefunctions.=<<END;
287: var acts='';
288: function rep_dirpath(suffix,val) {
289: eval("document.forms.dirpath"+suffix+".acts.value=val");
290: }
291: END
292: if ($ENV{'form.catalogmode'} eq 'groupimport') {
293: $catalogmodefunctions.=<<END;
294: function queue(val) {
295: if (eval("document.forms."+val+".filelink.checked")) {
296: var l=val.length;
297: var v=val.substring(4,l);
298: document.forms.fileattr.acts.value+='1a'+v+'b';
299: }
300: else {
301: var l=val.length;
302: var v=val.substring(4,l);
303: document.forms.fileattr.acts.value+='0a'+v+'b';
304: }
305: }
306: END
307: }
308:
309: # ---------------------------------------------------------------- Print Header
310: $r->print(<<ENDHEADER);
311: <html>
312: <head>
313: <title>The LearningOnline Network With CAPA Directory Browser</title>
314:
315: <script type="text/javascript">
316: $catalogmodefunctions
317: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
318: var options = "width=" + w + ",height=" + h + ",";
319: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
320: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
321: var newWin = window.open(url, wdwName, options);
322: newWin.focus();
323: }
324: function gothere(val) {
325: window.location=val+'?acts='+document.forms.fileattr.acts.value;
326: }
327: </script>
328:
329: </head>
330: ENDHEADER
331: $r->print(&Apache::loncommon::bodytag('Browse Resources'));
332: # - Evaluate actions from previous page (both cumulatively and chronologically)
333: if ($ENV{'form.catalogmode'} eq 'groupimport') {
334: my $acts=$ENV{'form.acts'};
335: my @Acts=split(/b/,$acts);
336: my %ahash;
337: my %achash;
338: my $ac=0;
339: # some initial hashes for working with data
340: foreach (@Acts) {
341: my ($state,$ref)=split(/a/);
342: $ahash{$ref}=$state;
343: $achash{$ref}=$ac;
344: $ac++;
345: }
346: # sorting through the actions and changing the tied database hash
347: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
348: my $key=$_;
349: if ($ahash{$key} eq '1') {
350: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
351: $hash{'pre_'.$key.'_title'};
352: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
353: $hash{'storectr'}+0;
354: $hash{'storectr'}++;
355: }
356: if ($ahash{$key} eq '0') {
357: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
358: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
359: }
360: }
361: }
362: # deleting the previously cached listing
363: foreach (keys %hash) {
364: if ($_ =~ /^pre_/ && $_ =~/link$/) {
365: my $key = $_;
366: $key =~ s/^pre_//;
367: $key =~ s/_[^_]*$//;
368: delete $hash{'pre_'.$key.'_title'};
369: delete $hash{'pre_'.$key.'_link'};
370: }
371: }
372: }
373:
374: # ---------------------------------- get state of file attributes to be showing
375: if ($ENV{'form.attrs'} ne '') {
376: for (my $i=0; $i<=7; $i++) {
377: delete $hash{'display_attrs_'.$i};
378: if ($ENV{'form.attr'.$i} == 1) {
379: $attrchk[$i] = 'checked';
380: $hash{'display_attrs_'.$i} = 1;
381: }
382: }
383: } else {
384: for (my $i=0; $i<=7; $i++) {
385: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
386: }
387: }
388: # ------------------------------- output state of file attributes to be showing
389: $r->print(<<END);
390: <form method="post" name="fileattr" action="$uri"
391: enctype="application/x-www-form-urlencoded">
392: <b><font color="#666666">Display file attributes</font></b><br />
393: <table border=0><tr>
394: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Title</td>
395: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Size</td>
396: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last access</td>
397: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Last modified</td>
398: </tr><tr>
399: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Author</td>
400: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Keywords</td>
401: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> Language</td>
402: <td><input type="checkbox" name="attr7" value="1" $attrchk[7] /> All versions</td>
403: </tr></table>
404: <input type="hidden" name="dirPointer" value="on" />
405: <input type="hidden" name="acts" value="" />
406: <input type="submit" name="attrs" value="Review" />
407: <input type="submit" name="attrs" value="Refresh" />
408: $closebutton
409: $groupimportbutton
410: </form>
411: END
412:
413: # ----------------- output starting row to the indexed file/directory hierarchy
414: my $titleclr="#ddffff";
415: # $r->print(&initdebug());
416: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
417: # $r->print(&writedebug("Only:@Only")) if (@Only);
418: $r->print("<table width='100\%' border=0><tr><td bgcolor=#777777>\n");
419: $r->print("<table width='100\%' border=0><tr bgcolor=$titleclr>\n");
420: $r->print("<td $colspan><b>Name</b></td>\n");
421: $r->print("<td><b>Title</b></td>\n")
422: if ($hash{'display_attrs_0'} == 1);
423: $r->print("<td align=right><b>Size (bytes) ".
424: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
425: $r->print("<td><b>Last accessed</b></td>\n")
426: if ($hash{'display_attrs_2'} == 1);
427: $r->print("<td><b>Last modified</b></td>\n")
428: if ($hash{'display_attrs_3'} == 1);
429: $r->print("<td><b>Author(s)</b></td>\n")
430: if ($hash{'display_attrs_4'} == 1);
431: $r->print("<td><b>Keywords</b></td>\n")
432: if ($hash{'display_attrs_5'} == 1);
433: $r->print("<td><b>Language</b></td>\n")
434: if ($hash{'display_attrs_6'} == 1);
435: $r->print('</tr>');
436:
437: # ----------------- read in what directories have previously been set to "open"
438: foreach (keys %hash) {
439: if ($_ =~ /^diropen_status_/) {
440: my $key = $_;
441: $key =~ s/^diropen_status_//;
442: $dirs{$key} = $hash{$_};
443: }
444: }
445:
446: if ($ENV{'form.openuri'}) { # take care of review and refresh options
447: my $uri=$ENV{'form.openuri'};
448: if (exists($hash{'diropen_status_'.$uri})) {
449: my $cursta = $hash{'diropen_status_'.$uri};
450: $dirs{$uri} = 'open';
451: $hash{'diropen_status_'.$uri} = 'open';
452: if ($cursta eq 'open') {
453: $dirs{$uri} = 'closed';
454: $hash{'diropen_status_'.$uri} = 'closed';
455: }
456: } else {
457: $hash{'diropen_status_'.$uri} = 'open';
458: $dirs{$uri} = 'open';
459: }
460: }
461:
462: my $bredir = $ENV{'form.dirPointer'};
463: my $toplevel;
464: my $indent = 0;
465: $uri = $uri.'/' if $uri !~ /.*\/$/;
466:
467: if ($bredir ne 'on') {
468: $hash{'top.level'} = $uri;
469: $toplevel = $uri;
470:
471: } else {
472: $toplevel = $hash{'top.level'};
473: }
474:
475: # -------------------------------- if not at top level, provide an uplink arrow
476: if ($toplevel ne '/res/'){
477: my (@uri_com) = split(/\//,$uri);
478: pop @uri_com;
479: my $upone = join('/',@uri_com);
480: my @list = qw (0);
481: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
482: $indent = 1;
483: }
484:
485: # -------- recursively go through all the directories and output as appropriate
486: &scanDir ($r,$toplevel,$indent,\%hash);
487:
488: # ---------------------------- embed hidden information useful for group import
489: $r->print("<form name='fnum'>");
490: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
491:
492: # -------------------------------------------------------------- end the tables
493: $r->print('</table>');
494: $r->print('</td></tr></table>');
495:
496: # --------------------------------------------------- end the output and return
497: $r->print('</body></html>'."\n");
498: untie(%hash);
499: } else {
500: $r->print('<html><head></head><body>Unable to tie hash to db '.
501: 'file</body></html>');
502: return OK;
503: }
504: return OK;
505: }
506:
507: # ----------------------------------------------- recursive scan of a directory
508: sub scanDir {
509: my ($r,$startdir,$indent,$hashref)=@_;
510: my ($compuri,$curdir);
511: my $dirptr=16384;
512: $indent++;
513:
514: my %dupdirs = %dirs;
515: my @list=&get_list($r,$startdir);
516: foreach my $line (@list) {
517: my ($strip,$dom,undef,$testdir,undef)=split(/\&/,$line,5);
518: next if $strip =~ /.*\.meta$/;
519: my (@fileparts) = split(/\./,$strip);
520: if ($hash{'display_attrs_7'} != 1) {
521: if (scalar(@fileparts) >= 3) {
522: my $fext = pop @fileparts;
523: my $ov = pop @fileparts;
524: my $fname = join ('.',@fileparts,$fext);
525: next if (grep /$fname/,@list and $ov =~ /\d+/);
526: }
527: }
528:
529: if ($dom eq 'domain') {
530: $compuri = join('',$strip,'/'); # dom list has /res/<domain name>
531: $curdir = $compuri;
532: } else {
533: # user, dir & file have name only, i.e., w/o path
534: $compuri = join('',$startdir,$strip,'/');
535: $curdir = $startdir;
536: }
537: my $diropen = 'closed';
538: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
539: while (my ($key,$val)= each %dupdirs) {
540: if ($key eq $compuri and $val eq "open") {
541: $diropen = "opened";
542: delete($dupdirs{$key});
543: delete($dirs{$key});
544: }
545: }
546: }
547: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
548: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
549: }
550: $indent--;
551: }
552:
553: # --------------- get complete matched list based on the uri (returns an array)
554: sub get_list {
555: my ($r,$uri)=@_;
556: my @list;
557: (my $luri = $uri) =~ s/\//_/g;
558:
559: if ($ENV{'form.attrs'} eq 'Refresh') {
560: foreach (keys %hash) {
561: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
562: }
563: }
564:
565: if ($hash{'dirlist_files'.$luri}) {
566: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
567: } else {
568: @list = &Apache::lonnet::dirlist($uri);
569: $hash{'dirlist_files_'.$luri} = join('\n',@list);
570: }
571: return @list=&match_ext($r,@list);
572: }
573:
574: sub initdebug {
575: return <<ENDJS;
576: <script>
577: var debugging = true;
578: if (debugging) {
579: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
580: }
581:
582: function output(text) {
583: if (debugging) {
584: debuggingWindow.document.writeln(text);
585: }
586: }
587: output("<html><head><title>Debugging Window</title></head><body><pre>");
588: </script>
589: ENDJS
590: }
591:
592: sub writedebug {
593: my $text = shift;
594: return "<script>output('$text');</script>";
595: }
596:
597: # -------------------- filters out files based on extensions (returns an array)
598: sub match_ext {
599: my ($r,@packlist)=@_;
600: my @trimlist;
601: my $nextline;
602: my @fileext;
603: my $dirptr=16384;
604:
605: foreach my $line (@packlist) {
606: chomp $line;
607: $line =~ s/^\/home\/httpd\/html//;
608: my @unpackline = split (/\&/,$line);
609: next if ($unpackline[0] eq '.');
610: next if ($unpackline[0] eq '..');
611: my @filecom = split (/\./,$unpackline[0]);
612: my $fext = pop(@filecom);
613: my $fnptr = $unpackline[3]&$dirptr;
614: if ($fnptr == 0 and $unpackline[3] ne "") {
615: my $embstyle = &Apache::loncommon::fileembstyle($fext);
616: push @trimlist,$line if (defined($embstyle) &&
617: ($embstyle ne 'hdn' or $fext eq 'meta'));
618: } else {
619: push @trimlist,$line;
620: }
621: }
622: @trimlist = sort (@trimlist);
623: return @trimlist;
624: }
625:
626: # ------------------------------- displays one line in appropriate table format
627: sub display_line {
628: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
629: my (@pathfn, $fndir);
630: my $dirptr=16384;
631: my $fileclr="#ffffe6";
632: my $iconpath= $r->dir_config('lonIconsURL') . '/';
633:
634: my @filecom = split (/\&/,$line);
635: my @pathcom = split (/\//,$filecom[0]);
636: my $listname = $pathcom[scalar(@pathcom)-1];
637: my $fnptr = $filecom[3]&$dirptr;
638: my $msg = 'View '.$filecom[0].' resources';
639: $msg = 'Close '.$filecom[0].' directory' if $diropen eq 'opened';
640:
641: my $tabtag='</td>';
642: my $i=0;
643:
644: while ($i<=6) {
645: $tabtag=join('',$tabtag,"<td> </td>")
646: if $hash{'display_attrs_'.$i} == 1;
647: $i++;
648: }
649:
650: # display uplink arrow
651: if ($filecom[1] eq 'viewOneUp') {
652: $r->print("<tr bgcolor=$fileclr>$extrafield");
653: $r->print("<td valign=bottom>\n");
654: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
655: '/" '.
656: 'onSubmit="return rep_dirpath(\'UP\','.
657: 'document.forms.fileattr.acts.value)" '.
658: 'enctype="application/x-www-form-urlencoded"'.
659: '>'."\n");
660: $r->print ('<input type=hidden name=openuri value="'.
661: $startdir.'">'."\n");
662: $r->print ('<input type="hidden" name="acts" value="">'."\n");
663: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
664: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
665: "\n");
666: $r->print("Up $tabtag</tr></form>\n");
667: return OK;
668: }
669:
670: # display domain
671: if ($filecom[1] eq 'domain') {
672: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
673: if ($ENV{'form.dirPointer'} eq "on");
674: $r->print("<tr bgcolor=$fileclr>$extrafield");
675: $r->print("<td valign=bottom>");
676: &begin_form ($r,$filecom[0].'/');
677: my $anchor = $filecom[0].'/';
678: $anchor =~ s/\///g;
679: $r->print ('<a name="'.$anchor.'">');
680: $r->print ('<input type="hidden" name="acts" value="">');
681: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
682: $diropen.'.gif"');
683: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
684: "\n");
685: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
686: '/\')"><img src="'.$iconpath.'server.gif"');
687: $r->print (' border="0" /></a>'."\n");
688: $r->print("Domain - $listname (".
689: $Apache::lonnet::domaindescription{$listname}.") $tabtag</tr></form>\n");
690: return OK;
691:
692: # display user directory
693: }
694: if ($filecom[1] eq 'user') {
695: $r->print("<tr bgcolor=$fileclr>$extrafield");
696: $r->print("<td valign=bottom nowrap>\n");
697: my $curdir = $startdir.$filecom[0].'/';
698: my $anchor = $curdir;
699: $anchor =~ s/\///g;
700: &begin_form ($r,$curdir);
701: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
702: 'whitespace1.gif" border="0" />'."\n");
703: $r->print ('<input type="hidden" name="acts" value="">');
704: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
705: '.gif"');
706: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
707: "\n");
708: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
709: $iconpath.'quill.gif border="0" name="'.$msg.
710: '" height="22" /></a>');
711: $r->print ($listname.$tabtag.'</tr></form>'."\n");
712: return OK;
713: }
714:
715: # display file
716: if ($fnptr == 0 and $filecom[3] ne '') {
717: my $filelink = $startdir.$filecom[0];
718: return OK if (!&Apache::lonnet::allowed('bre',$filelink));
719: my @file_ext = split (/\./,$listname);
720: my $curfext = $file_ext[-1];
721: if (@Omit) {
722: foreach (@Omit) { return OK if ($curfext eq $_); }
723: }
724: if (@Only) {
725: my $skip = 1;
726: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
727: return OK if ($skip > 0);
728: }
729: # Set the icon for the file
730: my $iconname = "unknown.gif";
731: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
732: # The unless conditional that follows is a bit of overkill
733: $iconname = $curfext.".gif" unless
734: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
735: #
736: $r->print("<tr bgcolor=$fileclr><td nowrap valign='bottom'>");
737: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
738: my $title;
739: if ($ENV{'form.catalogmode'} eq 'interactive') {
740: $title=$listname;
741: $title = &Apache::lonnet::metadata($filelink,'title')
742: if ($metafile == 1);
743: $title=$listname unless $title;
744: my $titleesc=HTML::Entities::encode($title);
745: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
746: $r->print("<a href=\"javascript:select_data(\'",
747: $titleesc,"','",$filelink,"')\">");
748: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
749: "\n");
750: $r->print("</td><td valign='bottom' nowrap>");
751: }
752: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
753: $title=$listname;
754: $title = &Apache::lonnet::metadata($filelink,'title')
755: if ($metafile == 1);
756: $title=$listname unless $title;
757: my $titleesc=&HTML::Entities::encode($title);
758: $r->print("<form name='form$fnum'>\n");
759: $r->print("<input type='checkbox' name='filelink"."' ".
760: "value='$filelink' onClick='".
761: "javascript:queue(\"form$fnum\")' ");
762: if ($hash{'store_'.$filelink}) {
763: $r->print("checked");
764: }
765: $r->print(">\n");
766: $r->print("<input type='hidden' name='title"."' ".
767: "value='$titleesc'>\n");
768: $r->print("</form>\n");
769: $r->print("</td><td valign='bottom' nowrap>");
770: $hash{"pre_${fnum}_link"}=$filelink;
771: $hash{"pre_${fnum}_title"}=$titleesc;
772: $fnum++;
773: }
774:
775: if ($indent > 0 and $indent < 11) {
776: $r->print("<img src=",$iconpath,"whitespace",$indent,
777: ".gif border='0' />\n");
778: } elsif ($indent >0) {
779: my $ten = int($indent/10.);
780: my $rem = $indent%10.0;
781: my $count = 0;
782: while ($count < $ten) {
783: $r->print("<img src=",$iconpath,
784: "whitespace10.gif border='0' />\n");
785: $count++;
786: }
787: $r->print("<img src=",$iconpath,"whitespace",$rem,
788: ".gif border='0' />\n") if $rem > 0;
789: }
790:
791: $r->print("<img src=$iconpath$iconname border='0' />\n");
792: $r->print (" <a href=\"javascript:openWindow('".$filelink.
793: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
794: " TARGET=_self>$listname</a> ");
795:
796: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
797: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
798: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
799:
800: $r->print("</td>\n");
801: if ($hash{'display_attrs_0'} == 1) {
802: my $title = &Apache::lonnet::metadata($filelink,'title')
803: if ($metafile == 1);
804: $r->print('<td valign=bottom> '.($title eq '' ? ' ' : $title).
805: ' </td>'."\n");
806: }
807: $r->print('<td align=right valign=bottom> ',
808: $filecom[8]," </td>\n")
809: if $hash{'display_attrs_1'} == 1;
810: $r->print('<td valign=bottom> '.
811: (localtime($filecom[9]))." </td>\n")
812: if $hash{'display_attrs_2'} == 1;
813: $r->print('<td valign=bottom> '.
814: (localtime($filecom[10]))." </td>\n")
815: if $hash{'display_attrs_3'} == 1;
816:
817: if ($hash{'display_attrs_4'} == 1) {
818: my $author = &Apache::lonnet::metadata($filelink,'author')
819: if ($metafile == 1);
820: $r->print('<td valign=bottom> '.($author eq '' ? ' ' : $author).
821: " </td>\n");
822: }
823: if ($hash{'display_attrs_5'} == 1) {
824: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
825: if ($metafile == 1);
826: # $keywords = ' ' if (!$keywords);
827: $r->print('<td valign=bottom> '.($keywords eq '' ? ' ' : $keywords).
828: " </td>\n");
829: }
830: if ($hash{'display_attrs_6'} == 1) {
831: my $lang = &Apache::lonnet::metadata($filelink,'language')
832: if ($metafile == 1);
833: $lang = &Apache::loncommon::languagedescription($lang);
834: $r->print('<td valign=bottom> '.($lang eq '' ? ' ' : $lang).
835: " </td>\n");
836: }
837: $r->print("</tr>\n");
838: }
839:
840: # -- display directory
841: if ($fnptr == $dirptr) {
842: my @file_ext = split (/\./,$listname);
843: my $curfext = $file_ext[scalar(@file_ext)-1];
844: my $curdir = $startdir.$filecom[0].'/';
845: my $anchor = $curdir;
846: $anchor =~ s/\///g;
847: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=bottom>");
848: &begin_form ($r,$curdir);
849: my $indentm1 = $indent-1;
850: if ($indentm1 < 11 and $indentm1 > 0) {
851: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
852: ".gif border='0' />\n");
853: } else {
854: my $ten = int($indentm1/10.);
855: my $rem = $indentm1%10.0;
856: my $count = 0;
857: while ($count < $ten) {
858: $r->print ("<img src=",$iconpath
859: ,"whitespace10.gif border='0' />\n");
860: $count++;
861: }
862: $r->print ("<img src=",$iconpath,"whitespace",$rem,
863: ".gif border='0' />\n") if $rem > 0;
864: }
865: $r->print ('<input type="hidden" name="acts" value="">');
866: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
867: 'folder_pointer_'.$diropen.'.gif"');
868: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
869: "\n");
870: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
871: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
872: "\n");
873: $r->print ("$listname$tabtag</tr></form>\n");
874: }
875:
876: }
877:
878: # ------------------- prints the beginning of a form for directory or file link
879: sub begin_form {
880: my ($r,$uri) = @_;
881: my $anchor = $uri;
882: $anchor =~ s/\///g;
883: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
884: '#'.$anchor.
885: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
886: ',document.forms.fileattr.acts.value)" '.
887: 'enctype="application/x-www-form-urlencoded">'."\n");
888: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
889: "\n");
890: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
891: $dnum++;
892: }
893:
894: # --------- settings whenever the user causes the indexer window to be launched
895: sub start_fresh_session {
896: delete $hash{'form.catalogmode'};
897: delete $hash{'form.mode'};
898: delete $hash{'form.form'};
899: delete $hash{'form.element'};
900: delete $hash{'form.omit'};
901: delete $hash{'form.only'};
902: foreach (keys %hash) {
903: delete $hash{$_} if (/^(pre_|store)/);
904: }
905: }
906:
907: # ------------------------------------------------------------------- setvalues
908: sub setvalues {
909: # setvalues is used in registerurl to synchronize the database
910: # hash and environment hashes
911: my ($H1,$h1key,$H2,$h2key) =@_;
912: #
913: if (exists $H2->{$h2key}) {
914: $H1->{$h1key} = $H2->{$h2key};
915: } elsif (exists $H1->{$h1key}) {
916: $H2->{$h2key} = $H1->{$h1key};
917: }
918: }
919:
920: 1;
921:
922: sub cleanup {
923: untie(%hash) if (tied(%hash));
924: }
925:
926: =head1 NAME
927:
928: Apache::lonindexer - mod_perl module for cross server filesystem browsing
929:
930: =head1 SYNOPSIS
931:
932: Invoked by /etc/httpd/conf/srm.conf:
933:
934: <LocationMatch "^/res.*/$">
935: SetHandler perl-script
936: PerlHandler Apache::lonindexer
937: </LocationMatch>
938:
939: =head1 INTRODUCTION
940:
941: This module enables a scheme of browsing across a cross server.
942:
943: This is part of the LearningOnline Network with CAPA project
944: described at http://www.lon-capa.org.
945:
946: =head1 BEGIN SUBROUTINE
947:
948: This routine is only run once after compilation.
949:
950: =over 4
951:
952: =item *
953:
954: Initializes %language hash table.
955:
956: =back
957:
958: =head1 HANDLER SUBROUTINE
959:
960: This routine is called by Apache and mod_perl.
961:
962: =over 4
963:
964: =item *
965:
966: read in machine configuration variables
967:
968: =item *
969:
970: see if called from an interactive mode
971:
972: =item *
973:
974: refresh environment with user database values (in %hash)
975:
976: =item *
977:
978: define extra fields and buttons in case of special mode
979:
980: =item *
981:
982: set catalogmodefunctions to have extra needed javascript functionality
983:
984: =item *
985:
986: print header
987:
988: =item *
989:
990: evaluate actions from previous page (both cumulatively and chronologically)
991:
992: =item *
993:
994: output title
995:
996: =item *
997:
998: get state of file attributes to be showing
999:
1000: =item *
1001:
1002: output state of file attributes to be showing
1003:
1004: =item *
1005:
1006: output starting row to the indexed file/directory hierarchy
1007:
1008: =item *
1009:
1010: read in what directories have previously been set to "open"
1011:
1012: =item *
1013:
1014: if not at top level, provide an uplink arrow
1015:
1016: =item *
1017:
1018: recursively go through all the directories and output as appropriate
1019:
1020: =item *
1021:
1022: information useful for group import
1023:
1024: =item *
1025:
1026: end the tables
1027:
1028: =item *
1029:
1030: end the output and return
1031:
1032: =back
1033:
1034: =head1 OTHER SUBROUTINES
1035:
1036: =over 4
1037:
1038: =item *
1039:
1040: scanDir - recursive scan of a directory
1041:
1042: =item *
1043:
1044: get_list - get complete matched list based on the uri (returns an array)
1045:
1046: =item *
1047:
1048: match_ext - filters out files based on extensions (returns an array)
1049:
1050: =item *
1051:
1052: display_line - displays one line in appropriate table format
1053:
1054: =item *
1055:
1056: begin_form - prints the beginning of a form for directory or file link
1057:
1058: =item *
1059:
1060: start_fresh_session - settings whenever the user causes the indexer window
1061: to be launched
1062:
1063: =back
1064:
1065: =cut
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