1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.59 2003/02/03 18:03:52 harris41 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::File;
66: use GDBM_File;
67:
68: # ---------------------------------------- variables used throughout the module
69: my %hash; # tied to a user-specific gdbm file
70: my %dirs; # keys are directories, values are the open/close status
71: my %language; # has the reference information present in language.tab
72:
73: # ----- Values which are set by the handler subroutine and are accessible to
74: # ----- other methods.
75: my $extrafield; # default extra table cell
76: my $fnum; # file counter
77: my $dnum; # directory counter
78:
79: # ----- Used to include or exclude files with certain extensions.
80: my @Only = ();
81: my @Omit = ();
82:
83:
84: # ----------------------------- Handling routine called via Apache and mod_perl
85: sub handler {
86: my $r = shift;
87: $r->content_type('text/html');
88: &Apache::loncommon::no_cache($r);
89: $r->send_http_header;
90: return OK if $r->header_only;
91: $fnum=0;
92: $dnum=0;
93: untie %hash;
94:
95: # Deal with stupid global variables (is there a way around making
96: # these global to this package? It is just so wrong....)
97: undef (@Only);
98: undef (@Omit);
99:
100: # ------------------------------------- read in machine configuration variables
101: my $iconpath= $r->dir_config('lonIconsURL') . "/";
102: my $domain = $r->dir_config('lonDefDomain');
103: my $role = $r->dir_config('lonRole');
104: my $loadlim = $r->dir_config('lonLoadLim');
105: my $servadm = $r->dir_config('lonAdmEMail');
106: my $sysadm = $r->dir_config('lonSysEMail');
107: my $lonhost = $r->dir_config('lonHostID');
108: my $tabdir = $r->dir_config('lonTabDir');
109:
110: my $fileclr='#ffffe6';
111: my $line;
112: my (@attrchk,@openpath);
113: my $uri=$r->uri;
114:
115: # -------------------------------------- see if called from an interactive mode
116: # Get the parameters from the query string
117: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
118: ['catalogmode','launch','acts','mode','form','element',
119: 'only','omit']);
120: #-------------------------------------------------------------------
121: my $closebutton='';
122: my $groupimportbutton='';
123: my $colspan='';
124:
125: $extrafield='';
126: my $diropendb =
127: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
128:
129: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
130: if ($ENV{'form.launch'} eq '1') {
131: &start_fresh_session();
132: }
133: # -------------------- refresh environment with user database values (in %hash)
134: &setvalues(\%hash,'form.catalogmode',\%ENV,'form.catalogmode' );
135:
136: # --------------------- define extra fields and buttons in case of special mode
137: if ($ENV{'form.catalogmode'} eq 'interactive') {
138: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
139: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
140: ' border="0" /></td>';
141: $colspan=" colspan='2' ";
142: $closebutton=<<END;
143: <input type="button" name="close" value='CLOSE' onClick="self.close()">
144: END
145: }
146: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
147: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
148: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
149: ' border="0" /></td>';
150: $colspan=" colspan='2' ";
151: $closebutton=<<END;
152: <input type="button" name="close" value='CLOSE' onClick="self.close()">
153: END
154: $groupimportbutton=<<END;
155: <input type="button" name="groupimport" value='GROUP IMPORT'
156: onClick="javascript:select_group()">
157: END
158: }
159: # Additions made by Matthew to make the browser a little easier to deal
160: # with in the future.
161: #
162: # $mode (at this time) indicates if we are in edit mode.
163: # $form is the name of the form that the URL is placed when the
164: # selection is made.
165: # $element is the name of the element in $formname which receives
166: # the URL.
167: # &Apache::lonxml::debug('Checking mode, form, element');
168: &setvalues(\%hash,'form.mode' ,\%ENV,'form.mode' );
169: &setvalues(\%hash,'form.form' ,\%ENV,'form.form' );
170: &setvalues(\%hash,'form.element',\%ENV,'form.element');
171: &setvalues(\%hash,'form.only' ,\%ENV,'form.only' );
172: &setvalues(\%hash,'form.omit' ,\%ENV,'form.omit' );
173:
174: # Deal with 'omit' and 'only'
175: if (exists $ENV{'form.omit'}) {
176: @Omit = split(',',$ENV{'form.omit'});
177: }
178: if (exists $ENV{'form.only'}) {
179: @Only = split(',',$ENV{'form.only'});
180: }
181:
182: my $mode = $ENV{'form.mode'};
183: my ($form,$element);
184: if ($mode eq 'edit' || $mode eq 'parmset') {
185: $form = $ENV{'form.form'};
186: $element = $ENV{'form.element'};
187: }
188: &Apache::lonxml::debug("mode=$mode form=$form element=$element");
189: # ------ set catalogmodefunctions to have extra needed javascript functionality
190: my $catalogmodefunctions='';
191: if ($ENV{'form.catalogmode'} eq 'interactive' or
192: $ENV{'form.catalogmode'} eq 'groupimport') {
193: # The if statement below sets us up to use the old version
194: # by default (ie. if $mode is undefined). This is the easy
195: # way out. Hopefully in the future I'll find a way to get
196: # the calls dealt with in a more comprehensive manner.
197:
198: #
199: # There is now also mode "simple", which is for the simple version of the rat
200: #
201: #
202: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
203: my $location = "/adm/groupsort?catalogmode=groupimport&";
204: $location .= "mode=".$mode."&";
205: $location .= "acts=";
206: $catalogmodefunctions=<<"END";
207: function select_data(title,url) {
208: changeTitle(title);
209: changeURL(url);
210: self.close();
211: }
212: function select_group() {
213: window.location="$location"+document.forms.fileattr.acts.value;
214: }
215: function changeTitle(val) {
216: if (opener.inf) {
217: if (opener.inf.document.forms.resinfo.elements.t) {
218: opener.inf.document.forms.resinfo.elements.t.value=val;
219: }
220: }
221: }
222: function changeURL(val) {
223: if (opener.inf) {
224: if (opener.inf.document.forms.resinfo.elements.u) {
225: opener.inf.document.forms.resinfo.elements.u.value=val;
226: }
227: }
228: }
229: END
230: } elsif ($mode eq 'edit') { # we are in 'edit' mode
231: my $location = "/adm/groupsort?catalogmode=interactive&";
232: $location .= "form=$form&element=$element&mode=edit&acts=";
233: $catalogmodefunctions=<<END;
234: // mode = $mode
235: function select_data(title,url) {
236: changeURL(url);
237: self.close();
238: }
239:
240: function select_group() {
241: window.location="$location"+document.forms.fileattr.acts.value;
242: }
243:
244: function changeURL(val) {
245: if (window.opener.document) {
246: window.opener.document.forms["$form"].elements["$element"].value=val;
247: } else {
248: alert("The file you selected is: "+val);
249: }
250: }
251:
252: END
253: } elsif ($mode eq 'parmset') {
254: my $location = "/adm/groupsort?catalogmode=interactive&";
255: $location .= "form=$form&element=$element&mode=parmset&acts=";
256: $catalogmodefunctions=<<END;
257: // mode = $mode
258: function select_data(title,url) {
259: changeURL(url);
260: self.close();
261: }
262:
263: function select_group() {
264: window.location="$location"+document.forms.fileattr.acts.value;
265: }
266:
267: function changeURL(val) {
268: if (window.opener.document) {
269: var elementname = "$element"+"_value";
270: var checkboxname = "$element"+"_setparmval";
271: window.opener.document.forms["$form"].elements[elementname].value=val;
272: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
273: } else {
274: alert("The file you selected is: "+val);
275: }
276: }
277:
278: END
279: }
280: }
281: $catalogmodefunctions.=<<END;
282: var acts='';
283: function rep_dirpath(suffix,val) {
284: eval("document.forms.dirpath"+suffix+".acts.value=val");
285: }
286: END
287: if ($ENV{'form.catalogmode'} eq 'groupimport') {
288: $catalogmodefunctions.=<<END;
289: function queue(val) {
290: if (eval("document.forms."+val+".filelink.checked")) {
291: var l=val.length;
292: var v=val.substring(4,l);
293: document.forms.fileattr.acts.value+='1a'+v+'b';
294: }
295: else {
296: var l=val.length;
297: var v=val.substring(4,l);
298: document.forms.fileattr.acts.value+='0a'+v+'b';
299: }
300: }
301: END
302: }
303:
304: # ---------------------------------------------------------------- Print Header
305: $r->print(<<ENDHEADER);
306: <html>
307: <head>
308: <title>The LearningOnline Network With CAPA Directory Browser</title>
309:
310: <script type="text/javascript">
311: $catalogmodefunctions
312: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
313: var options = "width=" + w + ",height=" + h + ",";
314: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
315: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
316: var newWin = window.open(url, wdwName, options);
317: newWin.focus();
318: }
319: function gothere(val) {
320: window.location=val+'?acts='+document.forms.fileattr.acts.value;
321: }
322: </script>
323:
324: </head>
325: ENDHEADER
326: $r->print(&Apache::loncommon::bodytag('Browse Resources'));
327: # - Evaluate actions from previous page (both cumulatively and chronologically)
328: if ($ENV{'form.catalogmode'} eq 'groupimport') {
329: my $acts=$ENV{'form.acts'};
330: my @Acts=split(/b/,$acts);
331: my %ahash;
332: my %achash;
333: my $ac=0;
334: # some initial hashes for working with data
335: foreach (@Acts) {
336: my ($state,$ref)=split(/a/);
337: $ahash{$ref}=$state;
338: $achash{$ref}=$ac;
339: $ac++;
340: }
341: # sorting through the actions and changing the tied database hash
342: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
343: my $key=$_;
344: if ($ahash{$key} eq '1') {
345: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
346: $hash{'pre_'.$key.'_title'};
347: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
348: $hash{'storectr'}+0;
349: $hash{'storectr'}++;
350: }
351: if ($ahash{$key} eq '0') {
352: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
353: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
354: }
355: }
356: }
357: # deleting the previously cached listing
358: foreach (keys %hash) {
359: if ($_ =~ /^pre_/ && $_ =~/link$/) {
360: my $key = $_;
361: $key =~ s/^pre_//;
362: $key =~ s/_[^_]*$//;
363: delete $hash{'pre_'.$key.'_title'};
364: delete $hash{'pre_'.$key.'_link'};
365: }
366: }
367: }
368:
369: # ---------------------------------- get state of file attributes to be showing
370: if ($ENV{'form.attrs'} ne '') {
371: for (my $i=0; $i<=8; $i++) {
372: delete $hash{'display_attrs_'.$i};
373: if ($ENV{'form.attr'.$i} == 1) {
374: $attrchk[$i] = 'checked';
375: $hash{'display_attrs_'.$i} = 1;
376: }
377: }
378: } else {
379: for (my $i=0; $i<=8; $i++) {
380: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
381: }
382: }
383: # ------------------------------- output state of file attributes to be showing
384: $r->print(<<END);
385: <form method="post" name="fileattr" action="$uri"
386: enctype="application/x-www-form-urlencoded">
387: <b><font color="#666666">Display file attributes</font></b><br />
388: <table border=0><tr>
389: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Title</td>
390: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Size</td>
391: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last access</td>
392: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Last modified</td>
393: <td rowspan="2"><input type="checkbox" name="attr8" value="1" $attrchk[8] /> Show Resource</td></tr><tr>
394: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Author</td>
395: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Keywords</td>
396: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> Language</td>
397: <td><input type="checkbox" name="attr7" value="1" $attrchk[7] /> All versions</td>
398: </tr></table>
399: <input type="hidden" name="dirPointer" value="on" />
400: <input type="hidden" name="acts" value="" />
401: <input type="submit" name="attrs" value="Review" />
402: <input type="submit" name="attrs" value="Refresh" />
403: $closebutton
404: $groupimportbutton
405: </form>
406: END
407:
408: # ----------------- output starting row to the indexed file/directory hierarchy
409: my $titleclr="#ddffff";
410: # $r->print(&initdebug());
411: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
412: # $r->print(&writedebug("Only:@Only")) if (@Only);
413: $r->print("<table width='100\%' border=0><tr><td bgcolor=#777777>\n");
414: $r->print("<table width='100\%' border=0><tr bgcolor=$titleclr>\n");
415: $r->print("<td $colspan><b>Name</b></td>\n");
416: $r->print("<td><b>Title</b></td>\n")
417: if ($hash{'display_attrs_0'} == 1);
418: $r->print("<td align=right><b>Size (bytes) ".
419: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
420: $r->print("<td><b>Last accessed</b></td>\n")
421: if ($hash{'display_attrs_2'} == 1);
422: $r->print("<td><b>Last modified</b></td>\n")
423: if ($hash{'display_attrs_3'} == 1);
424: $r->print("<td><b>Author(s)</b></td>\n")
425: if ($hash{'display_attrs_4'} == 1);
426: $r->print("<td><b>Keywords</b></td>\n")
427: if ($hash{'display_attrs_5'} == 1);
428: $r->print("<td><b>Language</b></td>\n")
429: if ($hash{'display_attrs_6'} == 1);
430: $r->print("<td><b>Resource</b></td>\n")
431: if ($hash{'display_attrs_8'} == 1);
432: $r->print('</tr>');
433:
434: # ----------------- read in what directories have previously been set to "open"
435: foreach (keys %hash) {
436: if ($_ =~ /^diropen_status_/) {
437: my $key = $_;
438: $key =~ s/^diropen_status_//;
439: $dirs{$key} = $hash{$_};
440: }
441: }
442:
443: if ($ENV{'form.openuri'}) { # take care of review and refresh options
444: my $uri=$ENV{'form.openuri'};
445: if (exists($hash{'diropen_status_'.$uri})) {
446: my $cursta = $hash{'diropen_status_'.$uri};
447: $dirs{$uri} = 'open';
448: $hash{'diropen_status_'.$uri} = 'open';
449: if ($cursta eq 'open') {
450: $dirs{$uri} = 'closed';
451: $hash{'diropen_status_'.$uri} = 'closed';
452: }
453: } else {
454: $hash{'diropen_status_'.$uri} = 'open';
455: $dirs{$uri} = 'open';
456: }
457: }
458:
459: my $bredir = $ENV{'form.dirPointer'};
460: my $toplevel;
461: my $indent = 0;
462: $uri = $uri.'/' if $uri !~ /.*\/$/;
463:
464: if ($bredir ne 'on') {
465: $hash{'top.level'} = $uri;
466: $toplevel = $uri;
467:
468: } else {
469: $toplevel = $hash{'top.level'};
470: }
471:
472: # -------------------------------- if not at top level, provide an uplink arrow
473: if ($toplevel ne '/res/'){
474: my (@uri_com) = split(/\//,$uri);
475: pop @uri_com;
476: my $upone = join('/',@uri_com);
477: my @list = qw (0);
478: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
479: $indent = 1;
480: }
481:
482: # -------- recursively go through all the directories and output as appropriate
483: &scanDir ($r,$toplevel,$indent,\%hash);
484:
485: # ---------------------------- embed hidden information useful for group import
486: $r->print("<form name='fnum'>");
487: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
488:
489: # -------------------------------------------------------------- end the tables
490: $r->print('</table>');
491: $r->print('</td></tr></table>');
492:
493: # --------------------------------------------------- end the output and return
494: $r->print('</body></html>'."\n");
495: untie(%hash);
496: } else {
497: $r->print('<html><head></head><body>Unable to tie hash to db '.
498: 'file</body></html>');
499: return OK;
500: }
501: return OK;
502: }
503:
504: # ----------------------------------------------- recursive scan of a directory
505: sub scanDir {
506: my ($r,$startdir,$indent,$hashref)=@_;
507: my ($compuri,$curdir);
508: my $dirptr=16384;
509: $indent++;
510:
511: my %dupdirs = %dirs;
512: my @list=&get_list($r,$startdir);
513: foreach my $line (@list) {
514: my ($strip,$dom,undef,$testdir,undef)=split(/\&/,$line,5);
515: next if $strip =~ /.*\.meta$/;
516: my (@fileparts) = split(/\./,$strip);
517: if ($hash{'display_attrs_7'} != 1) {
518: if (scalar(@fileparts) >= 3) {
519: my $fext = pop @fileparts;
520: my $ov = pop @fileparts;
521: my $fname = join ('.',@fileparts,$fext);
522: next if (grep /$fname/,@list and $ov =~ /\d+/);
523: }
524: }
525:
526: if ($dom eq 'domain') {
527: $compuri = join('',$strip,'/'); # dom list has /res/<domain name>
528: $curdir = $compuri;
529: } else {
530: # user, dir & file have name only, i.e., w/o path
531: $compuri = join('',$startdir,$strip,'/');
532: $curdir = $startdir;
533: }
534: my $diropen = 'closed';
535: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
536: while (my ($key,$val)= each %dupdirs) {
537: if ($key eq $compuri and $val eq "open") {
538: $diropen = "opened";
539: delete($dupdirs{$key});
540: delete($dirs{$key});
541: }
542: }
543: }
544: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
545: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
546: }
547: $indent--;
548: }
549:
550: # --------------- get complete matched list based on the uri (returns an array)
551: sub get_list {
552: my ($r,$uri)=@_;
553: my @list;
554: (my $luri = $uri) =~ s/\//_/g;
555:
556: if ($ENV{'form.attrs'} eq 'Refresh') {
557: foreach (keys %hash) {
558: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
559: }
560: }
561:
562: if ($hash{'dirlist_files'.$luri}) {
563: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
564: } else {
565: @list = &Apache::lonnet::dirlist($uri);
566: $hash{'dirlist_files_'.$luri} = join('\n',@list);
567: }
568: return @list=&match_ext($r,@list);
569: }
570:
571: sub initdebug {
572: return <<ENDJS;
573: <script>
574: var debugging = true;
575: if (debugging) {
576: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
577: }
578:
579: function output(text) {
580: if (debugging) {
581: debuggingWindow.document.writeln(text);
582: }
583: }
584: output("<html><head><title>Debugging Window</title></head><body><pre>");
585: </script>
586: ENDJS
587: }
588:
589: sub writedebug {
590: my $text = shift;
591: return "<script>output('$text');</script>";
592: }
593:
594: # -------------------- filters out files based on extensions (returns an array)
595: sub match_ext {
596: my ($r,@packlist)=@_;
597: my @trimlist;
598: my $nextline;
599: my @fileext;
600: my $dirptr=16384;
601:
602: foreach my $line (@packlist) {
603: chomp $line;
604: $line =~ s/^\/home\/httpd\/html//;
605: my @unpackline = split (/\&/,$line);
606: next if ($unpackline[0] eq '.');
607: next if ($unpackline[0] eq '..');
608: my @filecom = split (/\./,$unpackline[0]);
609: my $fext = pop(@filecom);
610: my $fnptr = $unpackline[3]&$dirptr;
611: if ($fnptr == 0 and $unpackline[3] ne "") {
612: my $embstyle = &Apache::loncommon::fileembstyle($fext);
613: push @trimlist,$line if (defined($embstyle) &&
614: ($embstyle ne 'hdn' or $fext eq 'meta'));
615: } else {
616: push @trimlist,$line;
617: }
618: }
619: @trimlist = sort (@trimlist);
620: return @trimlist;
621: }
622:
623: # ------------------------------- displays one line in appropriate table format
624: sub display_line {
625: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
626: my (@pathfn, $fndir);
627: my $dirptr=16384;
628: my $fileclr="#ffffe6";
629: my $iconpath= $r->dir_config('lonIconsURL') . '/';
630:
631: my @filecom = split (/\&/,$line);
632: my @pathcom = split (/\//,$filecom[0]);
633: my $listname = $pathcom[scalar(@pathcom)-1];
634: my $fnptr = $filecom[3]&$dirptr;
635: my $msg = 'View '.$filecom[0].' resources';
636: $msg = 'Close '.$filecom[0].' directory' if $diropen eq 'opened';
637:
638: my $tabtag='</td>';
639: my $i=0;
640:
641: while ($i<=6) {
642: $tabtag=join('',$tabtag,"<td> </td>")
643: if $hash{'display_attrs_'.$i} == 1;
644: $i++;
645: }
646:
647: # display uplink arrow
648: if ($filecom[1] eq 'viewOneUp') {
649: $r->print("<tr bgcolor=$fileclr>$extrafield");
650: $r->print("<td valign=bottom>\n");
651: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
652: '/" '.
653: 'onSubmit="return rep_dirpath(\'UP\','.
654: 'document.forms.fileattr.acts.value)" '.
655: 'enctype="application/x-www-form-urlencoded"'.
656: '>'."\n");
657: $r->print ('<input type=hidden name=openuri value="'.
658: $startdir.'">'."\n");
659: $r->print ('<input type="hidden" name="acts" value="">'."\n");
660: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
661: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
662: "\n");
663: $r->print("Up $tabtag</tr></form>\n");
664: return OK;
665: }
666:
667: # display domain
668: if ($filecom[1] eq 'domain') {
669: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
670: if ($ENV{'form.dirPointer'} eq "on");
671: $r->print("<tr bgcolor=$fileclr>$extrafield");
672: $r->print("<td valign=bottom>");
673: &begin_form ($r,$filecom[0].'/');
674: my $anchor = $filecom[0].'/';
675: $anchor =~ s/\///g;
676: $r->print ('<a name="'.$anchor.'">');
677: $r->print ('<input type="hidden" name="acts" value="">');
678: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
679: $diropen.'.gif"');
680: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
681: "\n");
682: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
683: '/\')"><img src="'.$iconpath.'server.gif"');
684: $r->print (' border="0" /></a>'."\n");
685: $r->print("Domain - $listname (".
686: $Apache::lonnet::domaindescription{$listname}.") $tabtag</tr></form>\n");
687: return OK;
688:
689: # display user directory
690: }
691: if ($filecom[1] eq 'user') {
692: $r->print("<tr bgcolor=$fileclr>$extrafield");
693: $r->print("<td valign=bottom nowrap>\n");
694: my $curdir = $startdir.$filecom[0].'/';
695: my $anchor = $curdir;
696: $anchor =~ s/\///g;
697: &begin_form ($r,$curdir);
698: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
699: 'whitespace1.gif" border="0" />'."\n");
700: $r->print ('<input type="hidden" name="acts" value="">');
701: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
702: '.gif"');
703: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
704: "\n");
705: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
706: $iconpath.'quill.gif border="0" name="'.$msg.
707: '" height="22" /></a>');
708: $r->print ($listname.$tabtag.'</tr></form>'."\n");
709: return OK;
710: }
711:
712: # display file
713: if ($fnptr == 0 and $filecom[3] ne '') {
714: my $filelink = $startdir.$filecom[0];
715: return OK if (!&Apache::lonnet::allowed('bre',$filelink));
716: my @file_ext = split (/\./,$listname);
717: my $curfext = $file_ext[-1];
718: if (@Omit) {
719: foreach (@Omit) { return OK if ($curfext eq $_); }
720: }
721: if (@Only) {
722: my $skip = 1;
723: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
724: return OK if ($skip > 0);
725: }
726: # Set the icon for the file
727: my $iconname = "unknown.gif";
728: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
729: # The unless conditional that follows is a bit of overkill
730: $iconname = $curfext.".gif" unless
731: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
732: #
733: $r->print("<tr bgcolor=$fileclr><td nowrap valign='bottom'>");
734: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
735: my $title;
736: if ($ENV{'form.catalogmode'} eq 'interactive') {
737: $title=$listname;
738: $title = &Apache::lonnet::metadata($filelink,'title')
739: if ($metafile == 1);
740: $title=$listname unless $title;
741: my $titleesc=HTML::Entities::encode($title);
742: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
743: $r->print("<a href=\"javascript:select_data(\'",
744: $titleesc,"','",$filelink,"')\">");
745: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
746: "\n");
747: $r->print("</td><td valign='bottom' nowrap>");
748: }
749: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
750: $title=$listname;
751: $title = &Apache::lonnet::metadata($filelink,'title')
752: if ($metafile == 1);
753: $title=$listname unless $title;
754: my $titleesc=&HTML::Entities::encode($title);
755: $r->print("<form name='form$fnum'>\n");
756: $r->print("<input type='checkbox' name='filelink"."' ".
757: "value='$filelink' onClick='".
758: "javascript:queue(\"form$fnum\")' ");
759: if ($hash{'store_'.$filelink}) {
760: $r->print("checked");
761: }
762: $r->print(">\n");
763: $r->print("<input type='hidden' name='title"."' ".
764: "value='$titleesc'>\n");
765: $r->print("</form>\n");
766: $r->print("</td><td valign='bottom' nowrap>");
767: $hash{"pre_${fnum}_link"}=$filelink;
768: $hash{"pre_${fnum}_title"}=$titleesc;
769: $fnum++;
770: }
771:
772: if ($indent > 0 and $indent < 11) {
773: $r->print("<img src=",$iconpath,"whitespace",$indent,
774: ".gif border='0' />\n");
775: } elsif ($indent >0) {
776: my $ten = int($indent/10.);
777: my $rem = $indent%10.0;
778: my $count = 0;
779: while ($count < $ten) {
780: $r->print("<img src=",$iconpath,
781: "whitespace10.gif border='0' />\n");
782: $count++;
783: }
784: $r->print("<img src=",$iconpath,"whitespace",$rem,
785: ".gif border='0' />\n") if $rem > 0;
786: }
787:
788: $r->print("<img src=$iconpath$iconname border='0' />\n");
789: $r->print (" <a href=\"javascript:openWindow('".$filelink.
790: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
791: " TARGET=_self>$listname</a> ");
792:
793: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
794: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
795: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
796:
797: $r->print("</td>\n");
798: if ($hash{'display_attrs_0'} == 1) {
799: my $title = &Apache::lonnet::metadata($filelink,'title')
800: if ($metafile == 1);
801: $r->print('<td valign=bottom> '.($title eq '' ? ' ' : $title).
802: ' </td>'."\n");
803: }
804: $r->print('<td align=right valign=bottom> ',
805: $filecom[8]," </td>\n")
806: if $hash{'display_attrs_1'} == 1;
807: $r->print('<td valign=bottom> '.
808: (localtime($filecom[9]))." </td>\n")
809: if $hash{'display_attrs_2'} == 1;
810: $r->print('<td valign=bottom> '.
811: (localtime($filecom[10]))." </td>\n")
812: if $hash{'display_attrs_3'} == 1;
813:
814: if ($hash{'display_attrs_4'} == 1) {
815: my $author = &Apache::lonnet::metadata($filelink,'author')
816: if ($metafile == 1);
817: $r->print('<td valign=bottom> '.($author eq '' ? ' ' : $author).
818: " </td>\n");
819: }
820: if ($hash{'display_attrs_5'} == 1) {
821: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
822: if ($metafile == 1);
823: # $keywords = ' ' if (!$keywords);
824: $r->print('<td valign=bottom> '.($keywords eq '' ? ' ' : $keywords).
825: " </td>\n");
826: }
827: if ($hash{'display_attrs_6'} == 1) {
828: my $lang = &Apache::lonnet::metadata($filelink,'language')
829: if ($metafile == 1);
830: $lang = &Apache::loncommon::languagedescription($lang);
831: $r->print('<td valign=bottom> '.($lang eq '' ? ' ' : $lang).
832: " </td>\n");
833: }
834: if ($hash{'display_attrs_8'} == 1) {
835: my $output='';
836: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
837: if ($embstyle eq 'ssi') {
838: $output=&Apache::lonnet::ssi($filelink);
839: $output=~s/^.*\<body[^\>]*\>//si;
840: $output=~s/\<\/body\s*\>.*$//si;
841: $output='<font size="-2">'.$output.'</font>';
842: } elsif ($embstyle eq 'img') {
843: $output='<img src="'.$filelink.'" />';
844: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
845: $output='<img src="http://'.
846: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
847: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
848: }
849: $r->print('<td valign=bottom> '.($output eq '' ? ' ':$output).
850: " </td>\n");
851: }
852: $r->print("</tr>\n");
853: }
854:
855: # -- display directory
856: if ($fnptr == $dirptr) {
857: my @file_ext = split (/\./,$listname);
858: my $curfext = $file_ext[scalar(@file_ext)-1];
859: my $curdir = $startdir.$filecom[0].'/';
860: my $anchor = $curdir;
861: $anchor =~ s/\///g;
862: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=bottom>");
863: &begin_form ($r,$curdir);
864: my $indentm1 = $indent-1;
865: if ($indentm1 < 11 and $indentm1 > 0) {
866: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
867: ".gif border='0' />\n");
868: } else {
869: my $ten = int($indentm1/10.);
870: my $rem = $indentm1%10.0;
871: my $count = 0;
872: while ($count < $ten) {
873: $r->print ("<img src=",$iconpath
874: ,"whitespace10.gif border='0' />\n");
875: $count++;
876: }
877: $r->print ("<img src=",$iconpath,"whitespace",$rem,
878: ".gif border='0' />\n") if $rem > 0;
879: }
880: $r->print ('<input type="hidden" name="acts" value="">');
881: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
882: 'folder_pointer_'.$diropen.'.gif"');
883: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
884: "\n");
885: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
886: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
887: "\n");
888: $r->print ("$listname$tabtag</tr></form>\n");
889: }
890:
891: }
892:
893: # ------------------- prints the beginning of a form for directory or file link
894: sub begin_form {
895: my ($r,$uri) = @_;
896: my $anchor = $uri;
897: $anchor =~ s/\///g;
898: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
899: '#'.$anchor.
900: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
901: ',document.forms.fileattr.acts.value)" '.
902: 'enctype="application/x-www-form-urlencoded">'."\n");
903: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
904: "\n");
905: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
906: $dnum++;
907: }
908:
909: # --------- settings whenever the user causes the indexer window to be launched
910: sub start_fresh_session {
911: delete $hash{'form.catalogmode'};
912: delete $hash{'form.mode'};
913: delete $hash{'form.form'};
914: delete $hash{'form.element'};
915: delete $hash{'form.omit'};
916: delete $hash{'form.only'};
917: foreach (keys %hash) {
918: delete $hash{$_} if (/^(pre_|store)/);
919: }
920: }
921:
922: # ------------------------------------------------------------------- setvalues
923: sub setvalues {
924: # setvalues is used in registerurl to synchronize the database
925: # hash and environment hashes
926: my ($H1,$h1key,$H2,$h2key) =@_;
927: #
928: if (exists $H2->{$h2key}) {
929: $H1->{$h1key} = $H2->{$h2key};
930: } elsif (exists $H1->{$h1key}) {
931: $H2->{$h2key} = $H1->{$h1key};
932: }
933: }
934:
935: 1;
936:
937: sub cleanup {
938: if (tied(%hash)){
939: &Apache::lonnet::logthis('Cleanup indexer: hash');
940: unless (untie(%hash)) {
941: &Apache::lonnet::logthis('Failed cleanup indexer: hash');
942: }
943: }
944: }
945:
946: =head1 NAME
947:
948: Apache::lonindexer - mod_perl module for cross server filesystem browsing
949:
950: =head1 SYNOPSIS
951:
952: Invoked by /etc/httpd/conf/srm.conf:
953:
954: <LocationMatch "^/res.*/$">
955: SetHandler perl-script
956: PerlHandler Apache::lonindexer
957: </LocationMatch>
958:
959: =head1 INTRODUCTION
960:
961: This module enables a scheme of browsing across a cross server.
962:
963: This is part of the LearningOnline Network with CAPA project
964: described at http://www.lon-capa.org.
965:
966: =head1 BEGIN SUBROUTINE
967:
968: This routine is only run once after compilation.
969:
970: =over 4
971:
972: =item *
973:
974: Initializes %language hash table.
975:
976: =back
977:
978: =head1 HANDLER SUBROUTINE
979:
980: This routine is called by Apache and mod_perl.
981:
982: =over 4
983:
984: =item *
985:
986: read in machine configuration variables
987:
988: =item *
989:
990: see if called from an interactive mode
991:
992: =item *
993:
994: refresh environment with user database values (in %hash)
995:
996: =item *
997:
998: define extra fields and buttons in case of special mode
999:
1000: =item *
1001:
1002: set catalogmodefunctions to have extra needed javascript functionality
1003:
1004: =item *
1005:
1006: print header
1007:
1008: =item *
1009:
1010: evaluate actions from previous page (both cumulatively and chronologically)
1011:
1012: =item *
1013:
1014: output title
1015:
1016: =item *
1017:
1018: get state of file attributes to be showing
1019:
1020: =item *
1021:
1022: output state of file attributes to be showing
1023:
1024: =item *
1025:
1026: output starting row to the indexed file/directory hierarchy
1027:
1028: =item *
1029:
1030: read in what directories have previously been set to "open"
1031:
1032: =item *
1033:
1034: if not at top level, provide an uplink arrow
1035:
1036: =item *
1037:
1038: recursively go through all the directories and output as appropriate
1039:
1040: =item *
1041:
1042: information useful for group import
1043:
1044: =item *
1045:
1046: end the tables
1047:
1048: =item *
1049:
1050: end the output and return
1051:
1052: =back
1053:
1054: =head1 OTHER SUBROUTINES
1055:
1056: =over 4
1057:
1058: =item *
1059:
1060: scanDir - recursive scan of a directory
1061:
1062: =item *
1063:
1064: get_list - get complete matched list based on the uri (returns an array)
1065:
1066: =item *
1067:
1068: match_ext - filters out files based on extensions (returns an array)
1069:
1070: =item *
1071:
1072: display_line - displays one line in appropriate table format
1073:
1074: =item *
1075:
1076: begin_form - prints the beginning of a form for directory or file link
1077:
1078: =item *
1079:
1080: start_fresh_session - settings whenever the user causes the indexer window
1081: to be launched
1082:
1083: =back
1084:
1085: =cut
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