1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.64 2003/05/29 01:08:05 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::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><input type="checkbox" name="attr8" value="1" $attrchk[8] /> All versions</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] /> Show Resource</td>
398: <td> </td>
399: </tr></table>
400: <input type="hidden" name="dirPointer" value="on" />
401: <input type="hidden" name="acts" value="" />
402: <input type="submit" name="attrs" value="Review" />
403: <input type="submit" name="attrs" value="Refresh" />
404: $closebutton
405: $groupimportbutton
406: </form>
407: END
408:
409: # ----------------- output starting row to the indexed file/directory hierarchy
410: my $titleclr="#ddffff";
411: # $r->print(&initdebug());
412: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
413: # $r->print(&writedebug("Only:@Only")) if (@Only);
414: $r->print("<table width='100\%' border=0><tr><td bgcolor=#777777>\n");
415: $r->print("<table width='100\%' border=0><tr bgcolor=$titleclr>\n");
416: $r->print("<td $colspan><b>Name</b></td>\n");
417: $r->print("<td><b>Title</b></td>\n")
418: if ($hash{'display_attrs_0'} == 1);
419: $r->print("<td align=right><b>Size (bytes) ".
420: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
421: $r->print("<td><b>Last accessed</b></td>\n")
422: if ($hash{'display_attrs_2'} == 1);
423: $r->print("<td><b>Last modified</b></td>\n")
424: if ($hash{'display_attrs_3'} == 1);
425: $r->print("<td><b>Author(s)</b></td>\n")
426: if ($hash{'display_attrs_4'} == 1);
427: $r->print("<td><b>Keywords</b></td>\n")
428: if ($hash{'display_attrs_5'} == 1);
429: $r->print("<td><b>Language</b></td>\n")
430: if ($hash{'display_attrs_6'} == 1);
431: $r->print("<td><b>Resource</b></td>\n")
432: if ($hash{'display_attrs_7'} == 1);
433: $r->print('</tr>');
434:
435: # ----------------- read in what directories have previously been set to "open"
436: foreach (keys %hash) {
437: if ($_ =~ /^diropen_status_/) {
438: my $key = $_;
439: $key =~ s/^diropen_status_//;
440: $dirs{$key} = $hash{$_};
441: }
442: }
443:
444: if ($ENV{'form.openuri'}) { # take care of review and refresh options
445: my $uri=$ENV{'form.openuri'};
446: if (exists($hash{'diropen_status_'.$uri})) {
447: my $cursta = $hash{'diropen_status_'.$uri};
448: $dirs{$uri} = 'open';
449: $hash{'diropen_status_'.$uri} = 'open';
450: if ($cursta eq 'open') {
451: $dirs{$uri} = 'closed';
452: $hash{'diropen_status_'.$uri} = 'closed';
453: }
454: } else {
455: $hash{'diropen_status_'.$uri} = 'open';
456: $dirs{$uri} = 'open';
457: }
458: }
459:
460: my $bredir = $ENV{'form.dirPointer'};
461: my $toplevel;
462: my $indent = 0;
463: $uri = $uri.'/' if $uri !~ /.*\/$/;
464:
465: if ($bredir ne 'on') {
466: $hash{'top.level'} = $uri;
467: $toplevel = $uri;
468:
469: } else {
470: $toplevel = $hash{'top.level'};
471: }
472:
473: # -------------------------------- if not at top level, provide an uplink arrow
474: if ($toplevel ne '/res/'){
475: my (@uri_com) = split(/\//,$uri);
476: pop @uri_com;
477: my $upone = join('/',@uri_com);
478: my @list = qw (0);
479: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
480: $indent = 1;
481: }
482:
483: # -------- recursively go through all the directories and output as appropriate
484: &scanDir ($r,$toplevel,$indent,\%hash);
485:
486: # ---------------------------- embed hidden information useful for group import
487: $r->print("<form name='fnum'>");
488: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
489:
490: # -------------------------------------------------------------- end the tables
491: $r->print('</table>');
492: $r->print('</td></tr></table>');
493:
494: # --------------------------------------------------- end the output and return
495: $r->print('</body></html>'."\n");
496: untie(%hash);
497: } else {
498: $r->print('<html><head></head><body>Unable to tie hash to db '.
499: 'file</body></html>');
500: return OK;
501: }
502: return OK;
503: }
504:
505: # ----------------------------------------------- recursive scan of a directory
506: sub scanDir {
507: my ($r,$startdir,$indent,$hashref)=@_;
508: my ($compuri,$curdir);
509: my $dirptr=16384;
510: $indent++;
511:
512: my %dupdirs = %dirs;
513: my @list=&get_list($r,$startdir);
514: foreach my $line (@list) {
515: my ($strip,$dom,undef,$testdir,undef)=split(/\&/,$line,5);
516: next if $strip =~ /.*\.meta$/;
517: my (@fileparts) = split(/\./,$strip);
518: if ($hash{'display_attrs_8'} != 1) {
519: if (scalar(@fileparts) >= 3) {
520: my $fext = pop @fileparts;
521: my $ov = pop @fileparts;
522: my $fname = join ('.',@fileparts,$fext);
523: next if (grep /\Q$fname\E/,@list and $ov =~ /\d+/);
524: }
525: }
526:
527: if ($dom eq 'domain') {
528: $compuri = join('',$strip,'/'); # dom list has /res/<domain name>
529: $curdir = $compuri;
530: } else {
531: # user, dir & file have name only, i.e., w/o path
532: $compuri = join('',$startdir,$strip,'/');
533: $curdir = $startdir;
534: }
535: my $diropen = 'closed';
536: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
537: while (my ($key,$val)= each %dupdirs) {
538: if ($key eq $compuri and $val eq "open") {
539: $diropen = "opened";
540: delete($dupdirs{$key});
541: delete($dirs{$key});
542: }
543: }
544: }
545: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
546: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
547: }
548: $indent--;
549: }
550:
551: # --------------- get complete matched list based on the uri (returns an array)
552: sub get_list {
553: my ($r,$uri)=@_;
554: my @list;
555: (my $luri = $uri) =~ s/\//_/g;
556:
557: if ($ENV{'form.attrs'} eq 'Refresh') {
558: foreach (keys %hash) {
559: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
560: }
561: }
562:
563: if ($hash{'dirlist_files'.$luri}) {
564: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
565: } else {
566: @list = &Apache::lonnet::dirlist($uri);
567: $hash{'dirlist_files_'.$luri} = join('\n',@list);
568: }
569: return @list=&match_ext($r,@list);
570: }
571:
572: sub initdebug {
573: return <<ENDJS;
574: <script>
575: var debugging = true;
576: if (debugging) {
577: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
578: }
579:
580: function output(text) {
581: if (debugging) {
582: debuggingWindow.document.writeln(text);
583: }
584: }
585: output("<html><head><title>Debugging Window</title></head><body><pre>");
586: </script>
587: ENDJS
588: }
589:
590: sub writedebug {
591: my $text = shift;
592: return "<script>output('$text');</script>";
593: }
594:
595: # -------------------- filters out files based on extensions (returns an array)
596: sub match_ext {
597: my ($r,@packlist)=@_;
598: my @trimlist;
599: my $nextline;
600: my @fileext;
601: my $dirptr=16384;
602:
603: foreach my $line (@packlist) {
604: chomp $line;
605: $line =~ s/^\/home\/httpd\/html//;
606: my @unpackline = split (/\&/,$line);
607: next if ($unpackline[0] eq '.');
608: next if ($unpackline[0] eq '..');
609: my @filecom = split (/\./,$unpackline[0]);
610: my $fext = pop(@filecom);
611: my $fnptr = $unpackline[3]&$dirptr;
612: if ($fnptr == 0 and $unpackline[3] ne "") {
613: my $embstyle = &Apache::loncommon::fileembstyle($fext);
614: push @trimlist,$line if (defined($embstyle) &&
615: ($embstyle ne 'hdn' or $fext eq 'meta'));
616: } else {
617: push @trimlist,$line;
618: }
619: }
620: @trimlist = sort (@trimlist);
621: return @trimlist;
622: }
623:
624: # ------------------------------- displays one line in appropriate table format
625: sub display_line {
626: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
627: my (@pathfn, $fndir);
628: my $dirptr=16384;
629: my $fileclr="#ffffe6";
630: my $iconpath= $r->dir_config('lonIconsURL') . '/';
631:
632: my @filecom = split (/\&/,$line);
633: my @pathcom = split (/\//,$filecom[0]);
634: my $listname = $pathcom[scalar(@pathcom)-1];
635: my $fnptr = $filecom[3]&$dirptr;
636: my $msg = 'View '.$filecom[0].' resources';
637: $msg = 'Close '.$filecom[0].' directory' if $diropen eq 'opened';
638:
639: my $tabtag='</td>';
640: my $i=0;
641:
642: while ($i<=7) {
643: $tabtag=join('',$tabtag,"<td> </td>")
644: if $hash{'display_attrs_'.$i} == 1;
645: $i++;
646: }
647:
648: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
649:
650: # display uplink arrow
651: if ($filecom[1] eq 'viewOneUp') {
652: $r->print("<tr bgcolor=$fileclr>$extrafield");
653: $r->print("<td valign=$valign>\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 $tabtag</tr></form>\n");
667: return OK;
668: }
669: # Do we have permission to look at this?
670:
671: return OK if (!&Apache::lonnet::allowed('bre',$startdir.$filecom[0]));
672:
673: # display domain
674: if ($filecom[1] eq 'domain') {
675: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
676: if ($ENV{'form.dirPointer'} eq "on");
677: $r->print("<tr bgcolor=$fileclr>$extrafield");
678: $r->print("<td valign=$valign>");
679: &begin_form ($r,$filecom[0].'/');
680: my $anchor = $filecom[0].'/';
681: $anchor =~ s/\///g;
682: $r->print ('<a name="'.$anchor.'">');
683: $r->print ('<input type="hidden" name="acts" value="">');
684: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
685: $diropen.'.gif"');
686: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
687: "\n");
688: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
689: '/\')"><img src="'.$iconpath.'server.gif"');
690: $r->print (' border="0" /></a>'."\n");
691: $r->print ("Domain - $listname ");
692: if ($Apache::lonnet::domaindescription{$listname}) {
693: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
694: ")");
695: }
696: $r->print (" $tabtag</tr></form>\n");
697: return OK;
698:
699: # display user directory
700: }
701: if ($filecom[1] eq 'user') {
702: $r->print("<tr bgcolor=$fileclr>$extrafield");
703: $r->print("<td valign=$valign nowrap>\n");
704: my $curdir = $startdir.$filecom[0].'/';
705: my $anchor = $curdir;
706: $anchor =~ s/\///g;
707: &begin_form ($r,$curdir);
708: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
709: 'whitespace1.gif" border="0" />'."\n");
710: $r->print ('<input type="hidden" name="acts" value="">');
711: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
712: '.gif"');
713: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
714: "\n");
715: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
716: $iconpath.'quill.gif border="0" name="'.$msg.
717: '" height="22" /></a>');
718: my $domain=(split(m|/|,$startdir))[2];
719: my $plainname=&Apache::loncommon::plainname($listname,$domain);
720: $r->print ($listname);
721: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
722: $r->print ($tabtag.'</tr></form>'."\n");
723: return OK;
724: }
725:
726: # display file
727: if ($fnptr == 0 and $filecom[3] ne '') {
728: my $filelink = $startdir.$filecom[0];
729: my @file_ext = split (/\./,$listname);
730: my $curfext = $file_ext[-1];
731: if (@Omit) {
732: foreach (@Omit) { return OK if ($curfext eq $_); }
733: }
734: if (@Only) {
735: my $skip = 1;
736: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
737: return OK if ($skip > 0);
738: }
739: # Set the icon for the file
740: my $iconname = "unknown.gif";
741: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
742: # The unless conditional that follows is a bit of overkill
743: $iconname = $curfext.".gif" unless
744: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
745: #
746: $r->print("<tr bgcolor=$fileclr><td nowrap valign='$valign'>");
747: my $metafile = grep /^\Q$filecom[0]\E\.meta\&/, @list;
748: my $title;
749: if ($ENV{'form.catalogmode'} eq 'interactive') {
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: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
756: $r->print("<a href=\"javascript:select_data(\'",
757: $titleesc,"','",$filelink,"')\">");
758: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
759: "\n");
760: $r->print("</td><td valign='$valign' nowrap>");
761: }
762: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
763: $title=$listname;
764: $title = &Apache::lonnet::metadata($filelink,'title')
765: if ($metafile == 1);
766: $title=$listname unless $title;
767: my $titleesc=&HTML::Entities::encode($title);
768: $r->print("<form name='form$fnum'>\n");
769: $r->print("<input type='checkbox' name='filelink"."' ".
770: "value='$filelink' onClick='".
771: "javascript:queue(\"form$fnum\")' ");
772: if ($hash{'store_'.$filelink}) {
773: $r->print("checked");
774: }
775: $r->print(">\n");
776: $r->print("<input type='hidden' name='title"."' ".
777: "value='$titleesc'>\n");
778: $r->print("</form>\n");
779: $r->print("</td><td valign='$valign' nowrap>");
780: $hash{"pre_${fnum}_link"}=$filelink;
781: $hash{"pre_${fnum}_title"}=$titleesc;
782: $fnum++;
783: }
784:
785: if ($indent > 0 and $indent < 11) {
786: $r->print("<img src=",$iconpath,"whitespace",$indent,
787: ".gif border='0' />\n");
788: } elsif ($indent >0) {
789: my $ten = int($indent/10.);
790: my $rem = $indent%10.0;
791: my $count = 0;
792: while ($count < $ten) {
793: $r->print("<img src=",$iconpath,
794: "whitespace10.gif border='0' />\n");
795: $count++;
796: }
797: $r->print("<img src=",$iconpath,"whitespace",$rem,
798: ".gif border='0' />\n") if $rem > 0;
799: }
800:
801: $r->print("<img src=$iconpath$iconname border='0' />\n");
802: $r->print (" <a href=\"javascript:openWindow('".$filelink.
803: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
804: " TARGET=_self>$listname</a> ");
805:
806: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
807: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
808: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
809:
810: $r->print("</td>\n");
811: if ($hash{'display_attrs_0'} == 1) {
812: my $title = &Apache::lonnet::metadata($filelink,'title')
813: if ($metafile == 1);
814: $r->print('<td valign=$valign> '.($title eq '' ? ' ' : $title).
815: ' </td>'."\n");
816: }
817: $r->print('<td align=right valign=$valign> ',
818: $filecom[8]," </td>\n")
819: if $hash{'display_attrs_1'} == 1;
820: $r->print('<td valign=$valign> '.
821: (localtime($filecom[9]))." </td>\n")
822: if $hash{'display_attrs_2'} == 1;
823: $r->print('<td valign=$valign> '.
824: (localtime($filecom[10]))." </td>\n")
825: if $hash{'display_attrs_3'} == 1;
826:
827: if ($hash{'display_attrs_4'} == 1) {
828: my $author = &Apache::lonnet::metadata($filelink,'author')
829: if ($metafile == 1);
830: $r->print('<td valign=$valign> '.($author eq '' ? ' ' : $author).
831: " </td>\n");
832: }
833: if ($hash{'display_attrs_5'} == 1) {
834: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
835: if ($metafile == 1);
836: # $keywords = ' ' if (!$keywords);
837: $r->print('<td valign=$valign> '.($keywords eq '' ? ' ' : $keywords).
838: " </td>\n");
839: }
840: if ($hash{'display_attrs_6'} == 1) {
841: my $lang = &Apache::lonnet::metadata($filelink,'language')
842: if ($metafile == 1);
843: $lang = &Apache::loncommon::languagedescription($lang);
844: $r->print('<td valign=$valign> '.($lang eq '' ? ' ' : $lang).
845: " </td>\n");
846: }
847: if ($hash{'display_attrs_7'} == 1) {
848: my $output='';
849: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
850: if ($embstyle eq 'ssi') {
851: $output=&Apache::lonnet::ssi_body($filelink);
852: $output='<font size="-2">'.$output.'</font>';
853: } elsif ($embstyle eq 'img') {
854: $output='<img src="'.$filelink.'" />';
855: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
856: $output='<img src="http://'.
857: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
858: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
859: }
860: $r->print('<td valign=$valign> '.($output eq '' ? ' ':$output).
861: " </td>\n");
862: }
863: $r->print("</tr>\n");
864: }
865:
866: # -- display directory
867: if ($fnptr == $dirptr) {
868: my @file_ext = split (/\./,$listname);
869: my $curfext = $file_ext[scalar(@file_ext)-1];
870: my $curdir = $startdir.$filecom[0].'/';
871: my $anchor = $curdir;
872: $anchor =~ s/\///g;
873: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
874: &begin_form ($r,$curdir);
875: my $indentm1 = $indent-1;
876: if ($indentm1 < 11 and $indentm1 > 0) {
877: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
878: ".gif border='0' />\n");
879: } else {
880: my $ten = int($indentm1/10.);
881: my $rem = $indentm1%10.0;
882: my $count = 0;
883: while ($count < $ten) {
884: $r->print ("<img src=",$iconpath
885: ,"whitespace10.gif border='0' />\n");
886: $count++;
887: }
888: $r->print ("<img src=",$iconpath,"whitespace",$rem,
889: ".gif border='0' />\n") if $rem > 0;
890: }
891: $r->print ('<input type="hidden" name="acts" value="">');
892: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
893: 'folder_pointer_'.$diropen.'.gif"');
894: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
895: "\n");
896: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
897: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
898: "\n");
899: $r->print ("$listname$tabtag</tr></form>\n");
900: }
901:
902: }
903:
904: # ------------------- prints the beginning of a form for directory or file link
905: sub begin_form {
906: my ($r,$uri) = @_;
907: my $anchor = $uri;
908: $anchor =~ s/\///g;
909: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
910: '#'.$anchor.
911: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
912: ',document.forms.fileattr.acts.value)" '.
913: 'enctype="application/x-www-form-urlencoded">'."\n");
914: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
915: "\n");
916: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
917: $dnum++;
918: }
919:
920: # --------- settings whenever the user causes the indexer window to be launched
921: sub start_fresh_session {
922: delete $hash{'form.catalogmode'};
923: delete $hash{'form.mode'};
924: delete $hash{'form.form'};
925: delete $hash{'form.element'};
926: delete $hash{'form.omit'};
927: delete $hash{'form.only'};
928: foreach (keys %hash) {
929: delete $hash{$_} if (/^(pre_|store)/);
930: }
931: }
932:
933: # ------------------------------------------------------------------- setvalues
934: sub setvalues {
935: # setvalues is used in registerurl to synchronize the database
936: # hash and environment hashes
937: my ($H1,$h1key,$H2,$h2key) =@_;
938: #
939: if (exists $H2->{$h2key}) {
940: $H1->{$h1key} = $H2->{$h2key};
941: } elsif (exists $H1->{$h1key}) {
942: $H2->{$h2key} = $H1->{$h1key};
943: }
944: }
945:
946: 1;
947:
948: sub cleanup {
949: if (tied(%hash)){
950: &Apache::lonnet::logthis('Cleanup indexer: hash');
951: unless (untie(%hash)) {
952: &Apache::lonnet::logthis('Failed cleanup indexer: hash');
953: }
954: }
955: }
956:
957: =head1 NAME
958:
959: Apache::lonindexer - mod_perl module for cross server filesystem browsing
960:
961: =head1 SYNOPSIS
962:
963: Invoked by /etc/httpd/conf/srm.conf:
964:
965: <LocationMatch "^/res.*/$">
966: SetHandler perl-script
967: PerlHandler Apache::lonindexer
968: </LocationMatch>
969:
970: =head1 INTRODUCTION
971:
972: This module enables a scheme of browsing across a cross server.
973:
974: This is part of the LearningOnline Network with CAPA project
975: described at http://www.lon-capa.org.
976:
977: =head1 BEGIN SUBROUTINE
978:
979: This routine is only run once after compilation.
980:
981: =over 4
982:
983: =item *
984:
985: Initializes %language hash table.
986:
987: =back
988:
989: =head1 HANDLER SUBROUTINE
990:
991: This routine is called by Apache and mod_perl.
992:
993: =over 4
994:
995: =item *
996:
997: read in machine configuration variables
998:
999: =item *
1000:
1001: see if called from an interactive mode
1002:
1003: =item *
1004:
1005: refresh environment with user database values (in %hash)
1006:
1007: =item *
1008:
1009: define extra fields and buttons in case of special mode
1010:
1011: =item *
1012:
1013: set catalogmodefunctions to have extra needed javascript functionality
1014:
1015: =item *
1016:
1017: print header
1018:
1019: =item *
1020:
1021: evaluate actions from previous page (both cumulatively and chronologically)
1022:
1023: =item *
1024:
1025: output title
1026:
1027: =item *
1028:
1029: get state of file attributes to be showing
1030:
1031: =item *
1032:
1033: output state of file attributes to be showing
1034:
1035: =item *
1036:
1037: output starting row to the indexed file/directory hierarchy
1038:
1039: =item *
1040:
1041: read in what directories have previously been set to "open"
1042:
1043: =item *
1044:
1045: if not at top level, provide an uplink arrow
1046:
1047: =item *
1048:
1049: recursively go through all the directories and output as appropriate
1050:
1051: =item *
1052:
1053: information useful for group import
1054:
1055: =item *
1056:
1057: end the tables
1058:
1059: =item *
1060:
1061: end the output and return
1062:
1063: =back
1064:
1065: =head1 OTHER SUBROUTINES
1066:
1067: =over 4
1068:
1069: =item *
1070:
1071: scanDir - recursive scan of a directory
1072:
1073: =item *
1074:
1075: get_list - get complete matched list based on the uri (returns an array)
1076:
1077: =item *
1078:
1079: match_ext - filters out files based on extensions (returns an array)
1080:
1081: =item *
1082:
1083: display_line - displays one line in appropriate table format
1084:
1085: =item *
1086:
1087: begin_form - prints the beginning of a form for directory or file link
1088:
1089: =item *
1090:
1091: start_fresh_session - settings whenever the user causes the indexer window
1092: to be launched
1093:
1094: =back
1095:
1096: =cut
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