1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.58 2003/01/20 17:20:52 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<=8; $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<=8; $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: <td rowspan="2"><input type="checkbox" name="attr8" value="1" $attrchk[8] /> Show Resource</td></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: $r->print("<td><b>Resource</b></td>\n")
436: if ($hash{'display_attrs_8'} == 1);
437: $r->print('</tr>');
438:
439: # ----------------- read in what directories have previously been set to "open"
440: foreach (keys %hash) {
441: if ($_ =~ /^diropen_status_/) {
442: my $key = $_;
443: $key =~ s/^diropen_status_//;
444: $dirs{$key} = $hash{$_};
445: }
446: }
447:
448: if ($ENV{'form.openuri'}) { # take care of review and refresh options
449: my $uri=$ENV{'form.openuri'};
450: if (exists($hash{'diropen_status_'.$uri})) {
451: my $cursta = $hash{'diropen_status_'.$uri};
452: $dirs{$uri} = 'open';
453: $hash{'diropen_status_'.$uri} = 'open';
454: if ($cursta eq 'open') {
455: $dirs{$uri} = 'closed';
456: $hash{'diropen_status_'.$uri} = 'closed';
457: }
458: } else {
459: $hash{'diropen_status_'.$uri} = 'open';
460: $dirs{$uri} = 'open';
461: }
462: }
463:
464: my $bredir = $ENV{'form.dirPointer'};
465: my $toplevel;
466: my $indent = 0;
467: $uri = $uri.'/' if $uri !~ /.*\/$/;
468:
469: if ($bredir ne 'on') {
470: $hash{'top.level'} = $uri;
471: $toplevel = $uri;
472:
473: } else {
474: $toplevel = $hash{'top.level'};
475: }
476:
477: # -------------------------------- if not at top level, provide an uplink arrow
478: if ($toplevel ne '/res/'){
479: my (@uri_com) = split(/\//,$uri);
480: pop @uri_com;
481: my $upone = join('/',@uri_com);
482: my @list = qw (0);
483: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
484: $indent = 1;
485: }
486:
487: # -------- recursively go through all the directories and output as appropriate
488: &scanDir ($r,$toplevel,$indent,\%hash);
489:
490: # ---------------------------- embed hidden information useful for group import
491: $r->print("<form name='fnum'>");
492: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
493:
494: # -------------------------------------------------------------- end the tables
495: $r->print('</table>');
496: $r->print('</td></tr></table>');
497:
498: # --------------------------------------------------- end the output and return
499: $r->print('</body></html>'."\n");
500: untie(%hash);
501: } else {
502: $r->print('<html><head></head><body>Unable to tie hash to db '.
503: 'file</body></html>');
504: return OK;
505: }
506: return OK;
507: }
508:
509: # ----------------------------------------------- recursive scan of a directory
510: sub scanDir {
511: my ($r,$startdir,$indent,$hashref)=@_;
512: my ($compuri,$curdir);
513: my $dirptr=16384;
514: $indent++;
515:
516: my %dupdirs = %dirs;
517: my @list=&get_list($r,$startdir);
518: foreach my $line (@list) {
519: my ($strip,$dom,undef,$testdir,undef)=split(/\&/,$line,5);
520: next if $strip =~ /.*\.meta$/;
521: my (@fileparts) = split(/\./,$strip);
522: if ($hash{'display_attrs_7'} != 1) {
523: if (scalar(@fileparts) >= 3) {
524: my $fext = pop @fileparts;
525: my $ov = pop @fileparts;
526: my $fname = join ('.',@fileparts,$fext);
527: next if (grep /$fname/,@list and $ov =~ /\d+/);
528: }
529: }
530:
531: if ($dom eq 'domain') {
532: $compuri = join('',$strip,'/'); # dom list has /res/<domain name>
533: $curdir = $compuri;
534: } else {
535: # user, dir & file have name only, i.e., w/o path
536: $compuri = join('',$startdir,$strip,'/');
537: $curdir = $startdir;
538: }
539: my $diropen = 'closed';
540: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
541: while (my ($key,$val)= each %dupdirs) {
542: if ($key eq $compuri and $val eq "open") {
543: $diropen = "opened";
544: delete($dupdirs{$key});
545: delete($dirs{$key});
546: }
547: }
548: }
549: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
550: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
551: }
552: $indent--;
553: }
554:
555: # --------------- get complete matched list based on the uri (returns an array)
556: sub get_list {
557: my ($r,$uri)=@_;
558: my @list;
559: (my $luri = $uri) =~ s/\//_/g;
560:
561: if ($ENV{'form.attrs'} eq 'Refresh') {
562: foreach (keys %hash) {
563: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
564: }
565: }
566:
567: if ($hash{'dirlist_files'.$luri}) {
568: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
569: } else {
570: @list = &Apache::lonnet::dirlist($uri);
571: $hash{'dirlist_files_'.$luri} = join('\n',@list);
572: }
573: return @list=&match_ext($r,@list);
574: }
575:
576: sub initdebug {
577: return <<ENDJS;
578: <script>
579: var debugging = true;
580: if (debugging) {
581: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
582: }
583:
584: function output(text) {
585: if (debugging) {
586: debuggingWindow.document.writeln(text);
587: }
588: }
589: output("<html><head><title>Debugging Window</title></head><body><pre>");
590: </script>
591: ENDJS
592: }
593:
594: sub writedebug {
595: my $text = shift;
596: return "<script>output('$text');</script>";
597: }
598:
599: # -------------------- filters out files based on extensions (returns an array)
600: sub match_ext {
601: my ($r,@packlist)=@_;
602: my @trimlist;
603: my $nextline;
604: my @fileext;
605: my $dirptr=16384;
606:
607: foreach my $line (@packlist) {
608: chomp $line;
609: $line =~ s/^\/home\/httpd\/html//;
610: my @unpackline = split (/\&/,$line);
611: next if ($unpackline[0] eq '.');
612: next if ($unpackline[0] eq '..');
613: my @filecom = split (/\./,$unpackline[0]);
614: my $fext = pop(@filecom);
615: my $fnptr = $unpackline[3]&$dirptr;
616: if ($fnptr == 0 and $unpackline[3] ne "") {
617: my $embstyle = &Apache::loncommon::fileembstyle($fext);
618: push @trimlist,$line if (defined($embstyle) &&
619: ($embstyle ne 'hdn' or $fext eq 'meta'));
620: } else {
621: push @trimlist,$line;
622: }
623: }
624: @trimlist = sort (@trimlist);
625: return @trimlist;
626: }
627:
628: # ------------------------------- displays one line in appropriate table format
629: sub display_line {
630: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
631: my (@pathfn, $fndir);
632: my $dirptr=16384;
633: my $fileclr="#ffffe6";
634: my $iconpath= $r->dir_config('lonIconsURL') . '/';
635:
636: my @filecom = split (/\&/,$line);
637: my @pathcom = split (/\//,$filecom[0]);
638: my $listname = $pathcom[scalar(@pathcom)-1];
639: my $fnptr = $filecom[3]&$dirptr;
640: my $msg = 'View '.$filecom[0].' resources';
641: $msg = 'Close '.$filecom[0].' directory' if $diropen eq 'opened';
642:
643: my $tabtag='</td>';
644: my $i=0;
645:
646: while ($i<=6) {
647: $tabtag=join('',$tabtag,"<td> </td>")
648: if $hash{'display_attrs_'.$i} == 1;
649: $i++;
650: }
651:
652: # display uplink arrow
653: if ($filecom[1] eq 'viewOneUp') {
654: $r->print("<tr bgcolor=$fileclr>$extrafield");
655: $r->print("<td valign=bottom>\n");
656: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
657: '/" '.
658: 'onSubmit="return rep_dirpath(\'UP\','.
659: 'document.forms.fileattr.acts.value)" '.
660: 'enctype="application/x-www-form-urlencoded"'.
661: '>'."\n");
662: $r->print ('<input type=hidden name=openuri value="'.
663: $startdir.'">'."\n");
664: $r->print ('<input type="hidden" name="acts" value="">'."\n");
665: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
666: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
667: "\n");
668: $r->print("Up $tabtag</tr></form>\n");
669: return OK;
670: }
671:
672: # display domain
673: if ($filecom[1] eq 'domain') {
674: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
675: if ($ENV{'form.dirPointer'} eq "on");
676: $r->print("<tr bgcolor=$fileclr>$extrafield");
677: $r->print("<td valign=bottom>");
678: &begin_form ($r,$filecom[0].'/');
679: my $anchor = $filecom[0].'/';
680: $anchor =~ s/\///g;
681: $r->print ('<a name="'.$anchor.'">');
682: $r->print ('<input type="hidden" name="acts" value="">');
683: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
684: $diropen.'.gif"');
685: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
686: "\n");
687: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
688: '/\')"><img src="'.$iconpath.'server.gif"');
689: $r->print (' border="0" /></a>'."\n");
690: $r->print("Domain - $listname (".
691: $Apache::lonnet::domaindescription{$listname}.") $tabtag</tr></form>\n");
692: return OK;
693:
694: # display user directory
695: }
696: if ($filecom[1] eq 'user') {
697: $r->print("<tr bgcolor=$fileclr>$extrafield");
698: $r->print("<td valign=bottom nowrap>\n");
699: my $curdir = $startdir.$filecom[0].'/';
700: my $anchor = $curdir;
701: $anchor =~ s/\///g;
702: &begin_form ($r,$curdir);
703: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
704: 'whitespace1.gif" border="0" />'."\n");
705: $r->print ('<input type="hidden" name="acts" value="">');
706: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
707: '.gif"');
708: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
709: "\n");
710: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
711: $iconpath.'quill.gif border="0" name="'.$msg.
712: '" height="22" /></a>');
713: $r->print ($listname.$tabtag.'</tr></form>'."\n");
714: return OK;
715: }
716:
717: # display file
718: if ($fnptr == 0 and $filecom[3] ne '') {
719: my $filelink = $startdir.$filecom[0];
720: return OK if (!&Apache::lonnet::allowed('bre',$filelink));
721: my @file_ext = split (/\./,$listname);
722: my $curfext = $file_ext[-1];
723: if (@Omit) {
724: foreach (@Omit) { return OK if ($curfext eq $_); }
725: }
726: if (@Only) {
727: my $skip = 1;
728: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
729: return OK if ($skip > 0);
730: }
731: # Set the icon for the file
732: my $iconname = "unknown.gif";
733: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
734: # The unless conditional that follows is a bit of overkill
735: $iconname = $curfext.".gif" unless
736: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
737: #
738: $r->print("<tr bgcolor=$fileclr><td nowrap valign='bottom'>");
739: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
740: my $title;
741: if ($ENV{'form.catalogmode'} eq 'interactive') {
742: $title=$listname;
743: $title = &Apache::lonnet::metadata($filelink,'title')
744: if ($metafile == 1);
745: $title=$listname unless $title;
746: my $titleesc=HTML::Entities::encode($title);
747: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
748: $r->print("<a href=\"javascript:select_data(\'",
749: $titleesc,"','",$filelink,"')\">");
750: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
751: "\n");
752: $r->print("</td><td valign='bottom' nowrap>");
753: }
754: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
755: $title=$listname;
756: $title = &Apache::lonnet::metadata($filelink,'title')
757: if ($metafile == 1);
758: $title=$listname unless $title;
759: my $titleesc=&HTML::Entities::encode($title);
760: $r->print("<form name='form$fnum'>\n");
761: $r->print("<input type='checkbox' name='filelink"."' ".
762: "value='$filelink' onClick='".
763: "javascript:queue(\"form$fnum\")' ");
764: if ($hash{'store_'.$filelink}) {
765: $r->print("checked");
766: }
767: $r->print(">\n");
768: $r->print("<input type='hidden' name='title"."' ".
769: "value='$titleesc'>\n");
770: $r->print("</form>\n");
771: $r->print("</td><td valign='bottom' nowrap>");
772: $hash{"pre_${fnum}_link"}=$filelink;
773: $hash{"pre_${fnum}_title"}=$titleesc;
774: $fnum++;
775: }
776:
777: if ($indent > 0 and $indent < 11) {
778: $r->print("<img src=",$iconpath,"whitespace",$indent,
779: ".gif border='0' />\n");
780: } elsif ($indent >0) {
781: my $ten = int($indent/10.);
782: my $rem = $indent%10.0;
783: my $count = 0;
784: while ($count < $ten) {
785: $r->print("<img src=",$iconpath,
786: "whitespace10.gif border='0' />\n");
787: $count++;
788: }
789: $r->print("<img src=",$iconpath,"whitespace",$rem,
790: ".gif border='0' />\n") if $rem > 0;
791: }
792:
793: $r->print("<img src=$iconpath$iconname border='0' />\n");
794: $r->print (" <a href=\"javascript:openWindow('".$filelink.
795: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
796: " TARGET=_self>$listname</a> ");
797:
798: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
799: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
800: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
801:
802: $r->print("</td>\n");
803: if ($hash{'display_attrs_0'} == 1) {
804: my $title = &Apache::lonnet::metadata($filelink,'title')
805: if ($metafile == 1);
806: $r->print('<td valign=bottom> '.($title eq '' ? ' ' : $title).
807: ' </td>'."\n");
808: }
809: $r->print('<td align=right valign=bottom> ',
810: $filecom[8]," </td>\n")
811: if $hash{'display_attrs_1'} == 1;
812: $r->print('<td valign=bottom> '.
813: (localtime($filecom[9]))." </td>\n")
814: if $hash{'display_attrs_2'} == 1;
815: $r->print('<td valign=bottom> '.
816: (localtime($filecom[10]))." </td>\n")
817: if $hash{'display_attrs_3'} == 1;
818:
819: if ($hash{'display_attrs_4'} == 1) {
820: my $author = &Apache::lonnet::metadata($filelink,'author')
821: if ($metafile == 1);
822: $r->print('<td valign=bottom> '.($author eq '' ? ' ' : $author).
823: " </td>\n");
824: }
825: if ($hash{'display_attrs_5'} == 1) {
826: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
827: if ($metafile == 1);
828: # $keywords = ' ' if (!$keywords);
829: $r->print('<td valign=bottom> '.($keywords eq '' ? ' ' : $keywords).
830: " </td>\n");
831: }
832: if ($hash{'display_attrs_6'} == 1) {
833: my $lang = &Apache::lonnet::metadata($filelink,'language')
834: if ($metafile == 1);
835: $lang = &Apache::loncommon::languagedescription($lang);
836: $r->print('<td valign=bottom> '.($lang eq '' ? ' ' : $lang).
837: " </td>\n");
838: }
839: if ($hash{'display_attrs_8'} == 1) {
840: my $output='';
841: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
842: if ($embstyle eq 'ssi') {
843: $output=&Apache::lonnet::ssi($filelink);
844: $output=~s/^.*\<body[^\>]*\>//si;
845: $output=~s/\<\/body\s*\>.*$//si;
846: $output='<font size="-2">'.$output.'</font>';
847: } elsif ($embstyle eq 'img') {
848: $output='<img src="'.$filelink.'" />';
849: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
850: $output='<img src="http://'.
851: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
852: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
853: }
854: $r->print('<td valign=bottom> '.($output eq '' ? ' ':$output).
855: " </td>\n");
856: }
857: $r->print("</tr>\n");
858: }
859:
860: # -- display directory
861: if ($fnptr == $dirptr) {
862: my @file_ext = split (/\./,$listname);
863: my $curfext = $file_ext[scalar(@file_ext)-1];
864: my $curdir = $startdir.$filecom[0].'/';
865: my $anchor = $curdir;
866: $anchor =~ s/\///g;
867: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=bottom>");
868: &begin_form ($r,$curdir);
869: my $indentm1 = $indent-1;
870: if ($indentm1 < 11 and $indentm1 > 0) {
871: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
872: ".gif border='0' />\n");
873: } else {
874: my $ten = int($indentm1/10.);
875: my $rem = $indentm1%10.0;
876: my $count = 0;
877: while ($count < $ten) {
878: $r->print ("<img src=",$iconpath
879: ,"whitespace10.gif border='0' />\n");
880: $count++;
881: }
882: $r->print ("<img src=",$iconpath,"whitespace",$rem,
883: ".gif border='0' />\n") if $rem > 0;
884: }
885: $r->print ('<input type="hidden" name="acts" value="">');
886: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
887: 'folder_pointer_'.$diropen.'.gif"');
888: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
889: "\n");
890: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
891: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
892: "\n");
893: $r->print ("$listname$tabtag</tr></form>\n");
894: }
895:
896: }
897:
898: # ------------------- prints the beginning of a form for directory or file link
899: sub begin_form {
900: my ($r,$uri) = @_;
901: my $anchor = $uri;
902: $anchor =~ s/\///g;
903: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
904: '#'.$anchor.
905: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
906: ',document.forms.fileattr.acts.value)" '.
907: 'enctype="application/x-www-form-urlencoded">'."\n");
908: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
909: "\n");
910: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
911: $dnum++;
912: }
913:
914: # --------- settings whenever the user causes the indexer window to be launched
915: sub start_fresh_session {
916: delete $hash{'form.catalogmode'};
917: delete $hash{'form.mode'};
918: delete $hash{'form.form'};
919: delete $hash{'form.element'};
920: delete $hash{'form.omit'};
921: delete $hash{'form.only'};
922: foreach (keys %hash) {
923: delete $hash{$_} if (/^(pre_|store)/);
924: }
925: }
926:
927: # ------------------------------------------------------------------- setvalues
928: sub setvalues {
929: # setvalues is used in registerurl to synchronize the database
930: # hash and environment hashes
931: my ($H1,$h1key,$H2,$h2key) =@_;
932: #
933: if (exists $H2->{$h2key}) {
934: $H1->{$h1key} = $H2->{$h2key};
935: } elsif (exists $H1->{$h1key}) {
936: $H2->{$h2key} = $H1->{$h1key};
937: }
938: }
939:
940: 1;
941:
942: sub cleanup {
943: if (tied(%hash)){
944: &Apache::lonnet::logthis('Cleanup indexer: hash');
945: unless (untie(%hash)) {
946: &Apache::lonnet::logthis('Failed cleanup indexer: hash');
947: }
948: }
949: }
950:
951: =head1 NAME
952:
953: Apache::lonindexer - mod_perl module for cross server filesystem browsing
954:
955: =head1 SYNOPSIS
956:
957: Invoked by /etc/httpd/conf/srm.conf:
958:
959: <LocationMatch "^/res.*/$">
960: SetHandler perl-script
961: PerlHandler Apache::lonindexer
962: </LocationMatch>
963:
964: =head1 INTRODUCTION
965:
966: This module enables a scheme of browsing across a cross server.
967:
968: This is part of the LearningOnline Network with CAPA project
969: described at http://www.lon-capa.org.
970:
971: =head1 BEGIN SUBROUTINE
972:
973: This routine is only run once after compilation.
974:
975: =over 4
976:
977: =item *
978:
979: Initializes %language hash table.
980:
981: =back
982:
983: =head1 HANDLER SUBROUTINE
984:
985: This routine is called by Apache and mod_perl.
986:
987: =over 4
988:
989: =item *
990:
991: read in machine configuration variables
992:
993: =item *
994:
995: see if called from an interactive mode
996:
997: =item *
998:
999: refresh environment with user database values (in %hash)
1000:
1001: =item *
1002:
1003: define extra fields and buttons in case of special mode
1004:
1005: =item *
1006:
1007: set catalogmodefunctions to have extra needed javascript functionality
1008:
1009: =item *
1010:
1011: print header
1012:
1013: =item *
1014:
1015: evaluate actions from previous page (both cumulatively and chronologically)
1016:
1017: =item *
1018:
1019: output title
1020:
1021: =item *
1022:
1023: get state of file attributes to be showing
1024:
1025: =item *
1026:
1027: output state of file attributes to be showing
1028:
1029: =item *
1030:
1031: output starting row to the indexed file/directory hierarchy
1032:
1033: =item *
1034:
1035: read in what directories have previously been set to "open"
1036:
1037: =item *
1038:
1039: if not at top level, provide an uplink arrow
1040:
1041: =item *
1042:
1043: recursively go through all the directories and output as appropriate
1044:
1045: =item *
1046:
1047: information useful for group import
1048:
1049: =item *
1050:
1051: end the tables
1052:
1053: =item *
1054:
1055: end the output and return
1056:
1057: =back
1058:
1059: =head1 OTHER SUBROUTINES
1060:
1061: =over 4
1062:
1063: =item *
1064:
1065: scanDir - recursive scan of a directory
1066:
1067: =item *
1068:
1069: get_list - get complete matched list based on the uri (returns an array)
1070:
1071: =item *
1072:
1073: match_ext - filters out files based on extensions (returns an array)
1074:
1075: =item *
1076:
1077: display_line - displays one line in appropriate table format
1078:
1079: =item *
1080:
1081: begin_form - prints the beginning of a form for directory or file link
1082:
1083: =item *
1084:
1085: start_fresh_session - settings whenever the user causes the indexer window
1086: to be launched
1087:
1088: =back
1089:
1090: =cut
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