1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.74 2003/08/16 18:48:24 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # YEAR=1999
29: # 5/21/99, 5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)
30: # 11/23 Gerd Kortemeyer
31: # YEAR=2000
32: # 07/20-08/04 H.K. Ng
33: # YEAR=2001
34: # 05/9-05/19/2001 H. K. Ng
35: # 05/21/2001 H. K. Ng
36: # 05/23/2001 H. K. Ng
37: # 6/26,7/8 H. K. Ng
38: # 8/14 H. K. Ng
39: # 11/30 Matthew Hall
40: # YEAR=2002
41: # 6/29/2002 H. K. Ng
42: #
43: ###
44:
45: ###############################################################################
46: ## ##
47: ## ORGANIZATION OF THIS PERL MODULE ##
48: ## ##
49: ## 1. Description of functions ##
50: ## 2. Modules used by this module ##
51: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
52: ## 4. BEGIN block (to be run once after compilation) ##
53: ## 5. Handling routine called via Apache and mod_perl ##
54: ## 6. Other subroutines ##
55: ## ##
56: ###############################################################################
57:
58: package Apache::lonindexer;
59:
60: # ------------------------------------------------- modules used by this module
61: use strict;
62: use Apache::lonnet();
63: use Apache::loncommon();
64: use Apache::Constants qw(:common);
65: use Apache::lonmeta;
66: use Apache::File;
67: use GDBM_File;
68:
69: # ---------------------------------------- variables used throughout the module
70: my %hash; # tied to a user-specific gdbm file
71: my %dirs; # keys are directories, values are the open/close status
72: my %language; # has the reference information present in language.tab
73:
74: # ----- Values which are set by the handler subroutine and are accessible to
75: # ----- other methods.
76: my $extrafield; # default extra table cell
77: my $fnum; # file counter
78: my $dnum; # directory counter
79:
80: # ----- Used to include or exclude files with certain extensions.
81: my @Only = ();
82: my @Omit = ();
83:
84:
85: # ----------------------------- Handling routine called via Apache and mod_perl
86: sub handler {
87: my $r = shift;
88: my $c = $r->connection();
89: $r->content_type('text/html');
90: &Apache::loncommon::no_cache($r);
91: $r->send_http_header;
92: return OK if $r->header_only;
93: $fnum=0;
94: $dnum=0;
95:
96: # Deal with stupid global variables (is there a way around making
97: # these global to this package? It is just so wrong....)
98: undef (@Only);
99: undef (@Omit);
100:
101: # ------------------------------------- read in machine configuration variables
102: my $iconpath= $r->dir_config('lonIconsURL') . "/";
103: my $domain = $r->dir_config('lonDefDomain');
104: my $role = $r->dir_config('lonRole');
105: my $loadlim = $r->dir_config('lonLoadLim');
106: my $servadm = $r->dir_config('lonAdmEMail');
107: my $sysadm = $r->dir_config('lonSysEMail');
108: my $lonhost = $r->dir_config('lonHostID');
109: my $tabdir = $r->dir_config('lonTabDir');
110:
111: my $fileclr='#ffffe6';
112: my $line;
113: my (@attrchk,@openpath);
114: my $uri=$r->uri;
115:
116: # -------------------------------------- see if called from an interactive mode
117: # Get the parameters from the query string
118: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
119: ['catalogmode','launch','acts','mode','form','element',
120: 'only','omit']);
121: #-------------------------------------------------------------------
122: my $closebutton='';
123: my $groupimportbutton='';
124: my $colspan='';
125:
126: $extrafield='';
127: my $diropendb =
128: "/home/httpd/perl/tmp/$ENV{'user.domain'}_$ENV{'user.name'}_indexer.db";
129: %hash = ();
130: {
131: my %dbfile;
132: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_WRCREAT(),0640)) {
133: while(my($key,$value)=each(%dbfile)) {
134: $hash{$key}=$value;
135: }
136: untie(%dbfile);
137: }
138: }
139: {
140: if ($ENV{'form.launch'} eq '1') {
141: &start_fresh_session();
142: }
143: # -------------------- refresh environment with user database values (in %hash)
144: &setvalues(\%hash,'form.catalogmode',\%ENV,'form.catalogmode' );
145:
146: # --------------------- define extra fields and buttons in case of special mode
147: if ($ENV{'form.catalogmode'} eq 'interactive') {
148: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
149: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
150: ' border="0" /></td>';
151: $colspan=" colspan='2' ";
152: $closebutton=<<END;
153: <input type="button" name="close" value='CLOSE' onClick="self.close()">
154: END
155: }
156: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
157: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
158: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
159: ' border="0" /></td>';
160: $colspan=" colspan='2' ";
161: $closebutton=<<END;
162: <input type="button" name="close" value='CLOSE' onClick="self.close()">
163: END
164: $groupimportbutton=<<END;
165: <input type="button" name="groupimport" value='GROUP IMPORT'
166: onClick="javascript:select_group()">
167: END
168: }
169: # Additions made by Matthew to make the browser a little easier to deal
170: # with in the future.
171: #
172: # $mode (at this time) indicates if we are in edit mode.
173: # $form is the name of the form that the URL is placed when the
174: # selection is made.
175: # $element is the name of the element in $formname which receives
176: # the URL.
177: # &Apache::lonxml::debug('Checking mode, form, element');
178: &setvalues(\%hash,'form.mode' ,\%ENV,'form.mode' );
179: &setvalues(\%hash,'form.form' ,\%ENV,'form.form' );
180: &setvalues(\%hash,'form.element',\%ENV,'form.element');
181: &setvalues(\%hash,'form.only' ,\%ENV,'form.only' );
182: &setvalues(\%hash,'form.omit' ,\%ENV,'form.omit' );
183:
184: # Deal with 'omit' and 'only'
185: if (exists $ENV{'form.omit'}) {
186: @Omit = split(',',$ENV{'form.omit'});
187: }
188: if (exists $ENV{'form.only'}) {
189: @Only = split(',',$ENV{'form.only'});
190: }
191:
192: my $mode = $ENV{'form.mode'};
193: my ($form,$element);
194: if ($mode eq 'edit' || $mode eq 'parmset') {
195: $form = $ENV{'form.form'};
196: $element = $ENV{'form.element'};
197: }
198: &Apache::lonxml::debug("mode=$mode form=$form element=$element");
199: # ------ set catalogmodefunctions to have extra needed javascript functionality
200: my $catalogmodefunctions='';
201: if ($ENV{'form.catalogmode'} eq 'interactive' or
202: $ENV{'form.catalogmode'} eq 'groupimport') {
203: # The if statement below sets us up to use the old version
204: # by default (ie. if $mode is undefined). This is the easy
205: # way out. Hopefully in the future I'll find a way to get
206: # the calls dealt with in a more comprehensive manner.
207:
208: #
209: # There is now also mode "simple", which is for the simple version of the rat
210: #
211: #
212: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
213: my $location = "/adm/groupsort?catalogmode=groupimport&";
214: $location .= "mode=".$mode."&";
215: $location .= "acts=";
216: $catalogmodefunctions=<<"END";
217: function select_data(title,url) {
218: changeTitle(title);
219: changeURL(url);
220: self.close();
221: }
222: function select_group() {
223: window.location="$location"+document.forms.fileattr.acts.value;
224: }
225: function changeTitle(val) {
226: if (opener.inf) {
227: if (opener.inf.document.forms.resinfo.elements.t) {
228: opener.inf.document.forms.resinfo.elements.t.value=val;
229: }
230: }
231: }
232: function changeURL(val) {
233: if (opener.inf) {
234: if (opener.inf.document.forms.resinfo.elements.u) {
235: opener.inf.document.forms.resinfo.elements.u.value=val;
236: }
237: }
238: }
239: END
240: } elsif ($mode eq 'edit') { # we are in 'edit' mode
241: my $location = "/adm/groupsort?catalogmode=interactive&";
242: $location .= "form=$form&element=$element&mode=edit&acts=";
243: $catalogmodefunctions=<<END;
244: // mode = $mode
245: function select_data(title,url) {
246: changeURL(url);
247: self.close();
248: }
249:
250: function select_group() {
251: window.location="$location"+document.forms.fileattr.acts.value;
252: }
253:
254: function changeURL(val) {
255: if (window.opener.document) {
256: window.opener.document.forms["$form"].elements["$element"].value=val;
257: } else {
258: alert("The file you selected is: "+val);
259: }
260: }
261:
262: END
263: } elsif ($mode eq 'parmset') {
264: my $location = "/adm/groupsort?catalogmode=interactive&";
265: $location .= "form=$form&element=$element&mode=parmset&acts=";
266: $catalogmodefunctions=<<END;
267: // mode = $mode
268: function select_data(title,url) {
269: changeURL(url);
270: self.close();
271: }
272:
273: function select_group() {
274: window.location="$location"+document.forms.fileattr.acts.value;
275: }
276:
277: function changeURL(val) {
278: if (window.opener.document) {
279: var elementname = "$element"+"_value";
280: var checkboxname = "$element"+"_setparmval";
281: window.opener.document.forms["$form"].elements[elementname].value=val;
282: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
283: } else {
284: alert("The file you selected is: "+val);
285: }
286: }
287:
288: END
289: }
290: }
291: $catalogmodefunctions.=<<END;
292: var acts='';
293: function rep_dirpath(suffix,val) {
294: eval("document.forms.dirpath"+suffix+".acts.value=val");
295: }
296: END
297: if ($ENV{'form.catalogmode'} eq 'groupimport') {
298: $catalogmodefunctions.=<<END;
299: function queue(val) {
300: if (eval("document.forms."+val+".filelink.checked")) {
301: var l=val.length;
302: var v=val.substring(4,l);
303: document.forms.fileattr.acts.value+='1a'+v+'b';
304: }
305: else {
306: var l=val.length;
307: var v=val.substring(4,l);
308: document.forms.fileattr.acts.value+='0a'+v+'b';
309: }
310: }
311: END
312: }
313:
314: # ---------------------------------------------------------------- Print Header
315: $r->print(<<ENDHEADER);
316: <html>
317: <head>
318: <title>The LearningOnline Network With CAPA Directory Browser</title>
319:
320: <script type="text/javascript">
321: $catalogmodefunctions
322: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
323: var xpos = (screen.width-w)/2;
324: xpos = (xpos < 0) ? '0' : xpos;
325: var ypos = (screen.height-h)/2-30;
326: ypos = (ypos < 0) ? '0' : ypos;
327: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
328: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
329: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
330: var newWin = window.open(url, wdwName, options);
331: newWin.focus();
332: }
333: function gothere(val) {
334: window.location=val+'?acts='+document.forms.fileattr.acts.value;
335: }
336: </script>
337:
338: </head>
339: ENDHEADER
340: my ($headerdom)=($uri=~/^\/res\/(\w+)\//);
341: $r->print(&Apache::loncommon::bodytag('Browse Resources',undef,undef,undef,
342: $headerdom));
343: # - Evaluate actions from previous page (both cumulatively and chronologically)
344: if ($ENV{'form.catalogmode'} eq 'groupimport') {
345: my $acts=$ENV{'form.acts'};
346: my @Acts=split(/b/,$acts);
347: my %ahash;
348: my %achash;
349: my $ac=0;
350: # some initial hashes for working with data
351: foreach (@Acts) {
352: my ($state,$ref)=split(/a/);
353: $ahash{$ref}=$state;
354: $achash{$ref}=$ac;
355: $ac++;
356: }
357: # sorting through the actions and changing the tied database hash
358: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
359: my $key=$_;
360: if ($ahash{$key} eq '1') {
361: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
362: $hash{'pre_'.$key.'_title'};
363: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
364: $hash{'storectr'}+0;
365: $hash{'storectr'}++;
366: }
367: if ($ahash{$key} eq '0') {
368: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
369: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
370: }
371: }
372: }
373: # deleting the previously cached listing
374: foreach (keys %hash) {
375: if ($_ =~ /^pre_/ && $_ =~/link$/) {
376: my $key = $_;
377: $key =~ s/^pre_//;
378: $key =~ s/_[^_]*$//;
379: delete $hash{'pre_'.$key.'_title'};
380: delete $hash{'pre_'.$key.'_link'};
381: }
382: }
383: }
384:
385: # ---------------------------------- get state of file attributes to be showing
386: if ($ENV{'form.attrs'} ne '') {
387: for (my $i=0; $i<=9; $i++) {
388: delete $hash{'display_attrs_'.$i};
389: if ($ENV{'form.attr'.$i} == 1) {
390: $attrchk[$i] = 'checked';
391: $hash{'display_attrs_'.$i} = 1;
392: }
393: }
394: } else {
395: for (my $i=0; $i<=9; $i++) {
396: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
397: }
398: }
399: # ------------------------------- output state of file attributes to be showing
400: # All versions has to the last item
401: # since it does not take an extra col
402: $r->print(<<END);
403: <form method="post" name="fileattr" action="$uri"
404: enctype="application/x-www-form-urlencoded">
405: <b><font color="#666666">Display file attributes</font></b><br />
406: <table border=0><tr>
407: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Title</td>
408: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Size</td>
409: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last access</td>
410: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Last modified</td>
411: <td><input type="checkbox" name="attr8" value="1" $attrchk[8] /> Statistics</td></tr><tr>
412: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Author</td>
413: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Keywords</td>
414: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> Language</td>
415: <td><input type="checkbox" name="attr7" value="1" $attrchk[7] /> Show Resource</td>
416: <td><input type="checkbox" name="attr9" value="1" $attrchk[9] /> All versions</td>
417: <td> </td>
418: </tr></table>
419: <input type="hidden" name="dirPointer" value="on" />
420: <input type="hidden" name="acts" value="" />
421: <input type="submit" name="attrs" value="Update Display" />
422: $closebutton
423: $groupimportbutton
424: </form>
425: END
426:
427: # ----------------- output starting row to the indexed file/directory hierarchy
428: my $titleclr="#ddffff";
429: # $r->print(&initdebug());
430: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
431: # $r->print(&writedebug("Only:@Only")) if (@Only);
432: $r->print("<table width='100\%' border=0><tr><td bgcolor=#777777>\n");
433: $r->print("<table width='100\%' border=0><tr bgcolor=$titleclr>\n");
434: $r->print("<td $colspan><b>Name</b></td>\n");
435: $r->print("<td><b>Title</b></td>\n")
436: if ($hash{'display_attrs_0'} == 1);
437: $r->print("<td align=right><b>Size (bytes) ".
438: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
439: $r->print("<td><b>Last accessed</b></td>\n")
440: if ($hash{'display_attrs_2'} == 1);
441: $r->print("<td><b>Last modified</b></td>\n")
442: if ($hash{'display_attrs_3'} == 1);
443: $r->print("<td><b>Author(s)</b></td>\n")
444: if ($hash{'display_attrs_4'} == 1);
445: $r->print("<td><b>Keywords</b></td>\n")
446: if ($hash{'display_attrs_5'} == 1);
447: $r->print("<td><b>Language</b></td>\n")
448: if ($hash{'display_attrs_6'} == 1);
449: $r->print("<td><b>Resource</b></td>\n")
450: if ($hash{'display_attrs_7'} == 1);
451: $r->print("<td><b>Usage Statistics <br />(Courses/Network Hits)</b></td>\n")
452: if ($hash{'display_attrs_8'} == 1);
453: $r->print('</tr>');
454:
455: # ----------------- read in what directories have previously been set to "open"
456: foreach (keys %hash) {
457: if ($_ =~ /^diropen_status_/) {
458: my $key = $_;
459: $key =~ s/^diropen_status_//;
460: $dirs{$key} = $hash{$_};
461: }
462: }
463:
464: if ($ENV{'form.openuri'}) { # take care of review and refresh options
465: my $uri=$ENV{'form.openuri'};
466: if (exists($hash{'diropen_status_'.$uri})) {
467: my $cursta = $hash{'diropen_status_'.$uri};
468: $dirs{$uri} = 'open';
469: $hash{'diropen_status_'.$uri} = 'open';
470: if ($cursta eq 'open') {
471: $dirs{$uri} = 'closed';
472: $hash{'diropen_status_'.$uri} = 'closed';
473: }
474: } else {
475: $hash{'diropen_status_'.$uri} = 'open';
476: $dirs{$uri} = 'open';
477: }
478: }
479:
480: my $bredir = $ENV{'form.dirPointer'};
481: my $toplevel;
482: my $indent = 0;
483: $uri = $uri.'/' if $uri !~ /.*\/$/;
484:
485: if ($bredir ne 'on') {
486: $hash{'top.level'} = $uri;
487: $toplevel = $uri;
488:
489: } else {
490: $toplevel = $hash{'top.level'};
491: }
492:
493: # -------------------------------- if not at top level, provide an uplink arrow
494: if ($toplevel ne '/res/'){
495: my (@uri_com) = split(/\//,$uri);
496: pop @uri_com;
497: my $upone = join('/',@uri_com);
498: my @list = qw (0);
499: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
500: $indent = 1;
501: }
502:
503: # -------- recursively go through all the directories and output as appropriate
504: &scanDir ($r,$toplevel,$indent,\%hash);
505:
506: # ---------------------------- embed hidden information useful for group import
507: $r->print("<form name='fnum'>");
508: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
509:
510: # -------------------------------------------------------------- end the tables
511: $r->print('</table>');
512: $r->print('</td></tr></table>');
513:
514: # --------------------------------------------------- end the output and return
515: $r->print('</body></html>'."\n");
516: # } else {
517: # $r->print('<html><head></head><body>Unable to tie hash to db '.
518: # 'file</body></html>');
519: # return OK;
520: }
521: if(! $c->aborted()) {
522: my %dbfile;
523: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
524: while (my($key,$value) = each(%hash)) {
525: $dbfile{$key}=$value;
526: }
527: untie(%dbfile);
528: }
529: }
530:
531: return OK;
532: }
533:
534: # ----------------------------------------------- recursive scan of a directory
535: sub scanDir {
536: my ($r,$startdir,$indent,$hashref)=@_;
537: my $c = $r->connection();
538: my ($compuri,$curdir);
539: my $dirptr=16384;
540: $indent++;
541:
542: my %dupdirs = %dirs;
543: my @list=&get_list($r,$startdir);
544: foreach my $line (@list) {
545: return if ($c->aborted());
546: my ($strip,$dom,undef,$testdir,undef)=split(/\&/,$line,5);
547: next if $strip =~ /.*\.meta$/;
548: my (@fileparts) = split(/\./,$strip);
549: if ($hash{'display_attrs_9'} != 1) {
550: if (scalar(@fileparts) >= 3) {
551: my $fext = pop @fileparts;
552: my $ov = pop @fileparts;
553: my $fname = join ('.',@fileparts,$fext);
554: next if (grep /\Q$fname\E/,@list and $ov =~ /\d+/);
555: }
556: }
557:
558: if ($dom eq 'domain') {
559: # dom list has full path /res/<domain name>/ already
560: $curdir='';
561: $compuri = (split(/\&/,$line))[0];
562: } else {
563: # user, dir & file have name only, i.e., w/o path
564: $compuri = join('',$startdir,$strip,'/');
565: $curdir = $startdir;
566: }
567: my $diropen = 'closed';
568: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
569: while (my ($key,$val)= each %dupdirs) {
570: if ($key eq $compuri and $val eq "open") {
571: $diropen = "opened";
572: delete($dupdirs{$key});
573: delete($dirs{$key});
574: }
575: }
576: }
577: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
578: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
579: }
580: $indent--;
581: }
582:
583: # --------------- get complete matched list based on the uri (returns an array)
584: sub get_list {
585: my ($r,$uri)=@_;
586: my @list;
587: (my $luri = $uri) =~ s/\//_/g;
588:
589: if ($ENV{'form.attrs'} eq 'Update Display') {
590: foreach (keys %hash) {
591: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
592: }
593: }
594:
595: if ($hash{'dirlist_files'.$luri}) {
596: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
597: } else {
598: @list = &Apache::lonnet::dirlist($uri);
599: $hash{'dirlist_files_'.$luri} = join('\n',@list);
600: }
601: return @list=&match_ext($r,@list);
602: }
603:
604: sub initdebug {
605: return <<ENDJS;
606: <script>
607: var debugging = true;
608: if (debugging) {
609: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
610: }
611:
612: function output(text) {
613: if (debugging) {
614: debuggingWindow.document.writeln(text);
615: }
616: }
617: output("<html><head><title>Debugging Window</title></head><body><pre>");
618: </script>
619: ENDJS
620: }
621:
622: sub writedebug {
623: my $text = shift;
624: return "<script>output('$text');</script>";
625: }
626:
627: # -------------------- filters out files based on extensions (returns an array)
628: sub match_ext {
629: my ($r,@packlist)=@_;
630: my @trimlist;
631: my $nextline;
632: my @fileext;
633: my $dirptr=16384;
634:
635: foreach my $line (@packlist) {
636: chomp $line;
637: $line =~ s/^\/home\/httpd\/html//;
638: my @unpackline = split (/\&/,$line);
639: next if ($unpackline[0] eq '.');
640: next if ($unpackline[0] eq '..');
641: my @filecom = split (/\./,$unpackline[0]);
642: my $fext = pop(@filecom);
643: my $fnptr = $unpackline[3]&$dirptr;
644: if ($fnptr == 0 and $unpackline[3] ne "") {
645: my $embstyle = &Apache::loncommon::fileembstyle($fext);
646: push @trimlist,$line if (defined($embstyle) &&
647: ($embstyle ne 'hdn' or $fext eq 'meta'));
648: } else {
649: push @trimlist,$line;
650: }
651: }
652: @trimlist = sort (@trimlist);
653: return @trimlist;
654: }
655:
656: # ------------------------------- displays one line in appropriate table format
657: sub display_line {
658: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
659: my (@pathfn, $fndir);
660: my $dirptr=16384;
661: my $fileclr="#ffffe6";
662: my $iconpath= $r->dir_config('lonIconsURL') . '/';
663:
664: my @filecom = split (/\&/,$line);
665: my @pathcom = split (/\//,$filecom[0]);
666: my $listname = $pathcom[scalar(@pathcom)-1];
667: my $fnptr = $filecom[3]&$dirptr;
668: my $msg = 'View '.$filecom[0].' resources';
669: $msg = 'Close '.$filecom[0].' directory' if $diropen eq 'opened';
670:
671: my $tabtag='</td>';
672: my $i=0;
673:
674: while ($i<=8) {
675: $tabtag=join('',$tabtag,"<td> </td>")
676: if $hash{'display_attrs_'.$i} == 1;
677: $i++;
678: }
679:
680: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
681:
682: # display uplink arrow
683: if ($filecom[1] eq 'viewOneUp') {
684: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
685: $r->print("<td>\n");
686: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
687: '/" '.
688: 'onSubmit="return rep_dirpath(\'UP\','.
689: 'document.forms.fileattr.acts.value)" '.
690: 'enctype="application/x-www-form-urlencoded"'.
691: '>'."\n");
692: $r->print ('<input type=hidden name=openuri value="'.
693: $startdir.'">'."\n");
694: $r->print ('<input type="hidden" name="acts" value="">'."\n");
695: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
696: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
697: "\n");
698: $r->print("Up $tabtag</tr></form>\n");
699: return OK;
700: }
701: # Do we have permission to look at this?
702:
703: return OK if (!&Apache::lonnet::allowed('bre',$startdir.$filecom[0]));
704:
705: # display domain
706: if ($filecom[1] eq 'domain') {
707: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
708: if ($ENV{'form.dirPointer'} eq "on");
709: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
710: $r->print("<td>");
711: &begin_form ($r,$filecom[0]);
712: my $anchor = $filecom[0];
713: $anchor =~ s/\///g;
714: $r->print ('<a name="'.$anchor.'">');
715: $r->print ('<input type="hidden" name="acts" value="">');
716: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
717: $diropen.'.gif"');
718: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
719: "\n");
720: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
721: '\')"><img src="'.$iconpath.'server.gif"');
722: $r->print (' border="0" /></a>'."\n");
723: $r->print ("Domain - $listname ");
724: if ($Apache::lonnet::domaindescription{$listname}) {
725: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
726: ")");
727: }
728: $r->print (" $tabtag</tr></form>\n");
729: return OK;
730:
731: # display user directory
732: }
733: if ($filecom[1] eq 'user') {
734: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
735: $r->print("<td nowrap>\n");
736: my $curdir = $startdir.$filecom[0].'/';
737: my $anchor = $curdir;
738: $anchor =~ s/\///g;
739: &begin_form ($r,$curdir);
740: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
741: 'whitespace1.gif" border="0" />'."\n");
742: $r->print ('<input type="hidden" name="acts" value="">');
743: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
744: '.gif"');
745: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
746: "\n");
747: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
748: $iconpath.'quill.gif border="0" name="'.$msg.
749: '" height="22" /></a>');
750: my $domain=(split(m|/|,$startdir))[2];
751: my $plainname=&Apache::loncommon::plainname($listname,$domain);
752: $r->print ($listname);
753: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
754: $r->print ($tabtag.'</tr></form>'."\n");
755: return OK;
756: }
757:
758: # display file
759: if ($fnptr == 0 and $filecom[3] ne '') {
760: my $filelink = $startdir.$filecom[0];
761: my @file_ext = split (/\./,$listname);
762: my $curfext = $file_ext[-1];
763: if (@Omit) {
764: foreach (@Omit) { return OK if ($curfext eq $_); }
765: }
766: if (@Only) {
767: my $skip = 1;
768: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
769: return OK if ($skip > 0);
770: }
771: # Set the icon for the file
772: my $iconname = "unknown.gif";
773: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
774: # The unless conditional that follows is a bit of overkill
775: $iconname = $curfext.".gif" unless
776: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
777: #
778: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap>");
779: my $metafile = grep /^\Q$filecom[0]\E\.meta\&/, @list;
780: my $title;
781: if ($ENV{'form.catalogmode'} eq 'interactive') {
782: $title=$listname;
783: $title = &Apache::lonnet::metadata($filelink,'title')
784: if ($metafile == 1);
785: $title=$listname unless $title;
786: my $titleesc=HTML::Entities::encode($title);
787: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
788: $r->print("<a href=\"javascript:select_data(\'",
789: $titleesc,"','",$filelink,"')\">");
790: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
791: "\n");
792: $r->print("</td><td nowrap>");
793: }
794: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
795: $title=$listname;
796: $title = &Apache::lonnet::metadata($filelink,'title')
797: if ($metafile == 1);
798: $title=$listname unless $title;
799: my $titleesc=&HTML::Entities::encode($title);
800: $r->print("<form name='form$fnum'>\n");
801: $r->print("<input type='checkbox' name='filelink"."' ".
802: "value='$filelink' onClick='".
803: "javascript:queue(\"form$fnum\")' ");
804: if ($hash{'store_'.$filelink}) {
805: $r->print("checked");
806: }
807: $r->print(">\n");
808: $r->print("<input type='hidden' name='title"."' ".
809: "value='$titleesc'>\n");
810: $r->print("</form>\n");
811: $r->print("</td><td nowrap>");
812: $hash{"pre_${fnum}_link"}=$filelink;
813: $hash{"pre_${fnum}_title"}=$titleesc;
814: $fnum++;
815: }
816:
817: if ($indent > 0 and $indent < 11) {
818: $r->print("<img src=",$iconpath,"whitespace",$indent,
819: ".gif border='0' />\n");
820: } elsif ($indent >0) {
821: my $ten = int($indent/10.);
822: my $rem = $indent%10.0;
823: my $count = 0;
824: while ($count < $ten) {
825: $r->print("<img src=",$iconpath,
826: "whitespace10.gif border='0' />\n");
827: $count++;
828: }
829: $r->print("<img src=",$iconpath,"whitespace",$rem,
830: ".gif border='0' />\n") if $rem > 0;
831: }
832:
833: $r->print("<img src=$iconpath$iconname border='0' />\n");
834: $r->print (" <a href=\"javascript:openWindow('".$filelink.
835: "', 'previewfile', '450', '500', 'no', 'yes','yes')\";".
836: " TARGET=_self>$listname</a> ");
837:
838: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
839: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no')\"; ".
840: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
841:
842: $r->print("</td>\n");
843: if ($hash{'display_attrs_0'} == 1) {
844: my $title = &Apache::lonnet::gettitle($filelink,'title')
845: if ($metafile == 1);
846: $r->print('<td> '.($title eq '' ? ' ' : $title).
847: ' </td>'."\n");
848: }
849: $r->print('<td align=right> ',
850: $filecom[8]," </td>\n")
851: if $hash{'display_attrs_1'} == 1;
852: $r->print('<td> '.
853: (localtime($filecom[9]))." </td>\n")
854: if $hash{'display_attrs_2'} == 1;
855: $r->print('<td> '.
856: (localtime($filecom[10]))." </td>\n")
857: if $hash{'display_attrs_3'} == 1;
858:
859: if ($hash{'display_attrs_4'} == 1) {
860: my $author = &Apache::lonnet::metadata($filelink,'author')
861: if ($metafile == 1);
862: $r->print('<td> '.($author eq '' ? ' ' : $author).
863: " </td>\n");
864: }
865: if ($hash{'display_attrs_5'} == 1) {
866: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
867: if ($metafile == 1);
868: # $keywords = ' ' if (!$keywords);
869: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
870: " </td>\n");
871: }
872: if ($hash{'display_attrs_6'} == 1) {
873: my $lang = &Apache::lonnet::metadata($filelink,'language')
874: if ($metafile == 1);
875: $lang = &Apache::loncommon::languagedescription($lang);
876: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
877: " </td>\n");
878: }
879: if ($hash{'display_attrs_7'} == 1) {
880: my $output='';
881: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
882: if ($embstyle eq 'ssi') {
883: $output=&Apache::lonnet::ssi_body($filelink);
884: $output='<font size="-2">'.$output.'</font>';
885: } elsif ($embstyle eq 'img') {
886: $output='<img src="'.$filelink.'" />';
887: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
888: $output='<img src="http://'.
889: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
890: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
891: }
892: $r->print('<td> '.($output eq '' ? ' ':$output).
893: " </td>\n");
894: }
895: if ($hash{'display_attrs_8'} == 1) {
896: my (%stat) = &Apache::lonmeta::dynamicmeta($filelink) if ($metafile == 1);
897: my $stat = (exists($stat{'course'}) ? $stat{'course'} : '').
898: ((exists($stat{'course'}) || exists($stat{'count'})) ? '/' : '').
899: (exists($stat{'count'}) ? $stat{'count'} : '');
900: $r->print('<td align=center> '.($stat eq '' ? ' ' : $stat).
901: ' </td>'."\n");
902: }
903:
904: $r->print("</tr>\n");
905: }
906:
907: # -- display directory
908: if ($fnptr == $dirptr) {
909: my @file_ext = split (/\./,$listname);
910: my $curfext = $file_ext[scalar(@file_ext)-1];
911: my $curdir = $startdir.$filecom[0].'/';
912: my $anchor = $curdir;
913: $anchor =~ s/\///g;
914: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
915: &begin_form ($r,$curdir);
916: my $indentm1 = $indent-1;
917: if ($indentm1 < 11 and $indentm1 > 0) {
918: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
919: ".gif border='0' />\n");
920: } else {
921: my $ten = int($indentm1/10.);
922: my $rem = $indentm1%10.0;
923: my $count = 0;
924: while ($count < $ten) {
925: $r->print ("<img src=",$iconpath
926: ,"whitespace10.gif border='0' />\n");
927: $count++;
928: }
929: $r->print ("<img src=",$iconpath,"whitespace",$rem,
930: ".gif border='0' />\n") if $rem > 0;
931: }
932: $r->print ('<input type="hidden" name="acts" value="">');
933: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
934: 'folder_pointer_'.$diropen.'.gif"');
935: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
936: "\n");
937: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
938: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
939: "\n");
940: $r->print ("$listname$tabtag</tr></form>\n");
941: }
942:
943: }
944:
945: # ------------------- prints the beginning of a form for directory or file link
946: sub begin_form {
947: my ($r,$uri) = @_;
948: my $anchor = $uri;
949: $anchor =~ s/\///g;
950: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
951: '#'.$anchor.
952: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
953: ',document.forms.fileattr.acts.value)" '.
954: 'enctype="application/x-www-form-urlencoded">'."\n");
955: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
956: "\n");
957: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
958: $dnum++;
959: }
960:
961: # --------- settings whenever the user causes the indexer window to be launched
962: sub start_fresh_session {
963: delete $hash{'form.catalogmode'};
964: delete $hash{'form.mode'};
965: delete $hash{'form.form'};
966: delete $hash{'form.element'};
967: delete $hash{'form.omit'};
968: delete $hash{'form.only'};
969: foreach (keys %hash) {
970: delete $hash{$_} if (/^(pre_|store)/);
971: }
972: }
973:
974: # ------------------------------------------------------------------- setvalues
975: sub setvalues {
976: # setvalues is used in registerurl to synchronize the database
977: # hash and environment hashes
978: my ($H1,$h1key,$H2,$h2key) =@_;
979: #
980: if (exists $H2->{$h2key}) {
981: $H1->{$h1key} = $H2->{$h2key};
982: } elsif (exists $H1->{$h1key}) {
983: $H2->{$h2key} = $H1->{$h1key};
984: }
985: }
986:
987: 1;
988:
989: sub cleanup {
990: if (tied(%hash)){
991: &Apache::lonnet::logthis('Cleanup indexer: hash');
992: }
993: }
994:
995: =head1 NAME
996:
997: Apache::lonindexer - mod_perl module for cross server filesystem browsing
998:
999: =head1 SYNOPSIS
1000:
1001: Invoked by /etc/httpd/conf/srm.conf:
1002:
1003: <LocationMatch "^/res.*/$">
1004: SetHandler perl-script
1005: PerlHandler Apache::lonindexer
1006: </LocationMatch>
1007:
1008: =head1 INTRODUCTION
1009:
1010: This module enables a scheme of browsing across a cross server.
1011:
1012: This is part of the LearningOnline Network with CAPA project
1013: described at http://www.lon-capa.org.
1014:
1015: =head1 BEGIN SUBROUTINE
1016:
1017: This routine is only run once after compilation.
1018:
1019: =over 4
1020:
1021: =item *
1022:
1023: Initializes %language hash table.
1024:
1025: =back
1026:
1027: =head1 HANDLER SUBROUTINE
1028:
1029: This routine is called by Apache and mod_perl.
1030:
1031: =over 4
1032:
1033: =item *
1034:
1035: read in machine configuration variables
1036:
1037: =item *
1038:
1039: see if called from an interactive mode
1040:
1041: =item *
1042:
1043: refresh environment with user database values (in %hash)
1044:
1045: =item *
1046:
1047: define extra fields and buttons in case of special mode
1048:
1049: =item *
1050:
1051: set catalogmodefunctions to have extra needed javascript functionality
1052:
1053: =item *
1054:
1055: print header
1056:
1057: =item *
1058:
1059: evaluate actions from previous page (both cumulatively and chronologically)
1060:
1061: =item *
1062:
1063: output title
1064:
1065: =item *
1066:
1067: get state of file attributes to be showing
1068:
1069: =item *
1070:
1071: output state of file attributes to be showing
1072:
1073: =item *
1074:
1075: output starting row to the indexed file/directory hierarchy
1076:
1077: =item *
1078:
1079: read in what directories have previously been set to "open"
1080:
1081: =item *
1082:
1083: if not at top level, provide an uplink arrow
1084:
1085: =item *
1086:
1087: recursively go through all the directories and output as appropriate
1088:
1089: =item *
1090:
1091: information useful for group import
1092:
1093: =item *
1094:
1095: end the tables
1096:
1097: =item *
1098:
1099: end the output and return
1100:
1101: =back
1102:
1103: =head1 OTHER SUBROUTINES
1104:
1105: =over 4
1106:
1107: =item *
1108:
1109: scanDir - recursive scan of a directory
1110:
1111: =item *
1112:
1113: get_list - get complete matched list based on the uri (returns an array)
1114:
1115: =item *
1116:
1117: match_ext - filters out files based on extensions (returns an array)
1118:
1119: =item *
1120:
1121: display_line - displays one line in appropriate table format
1122:
1123: =item *
1124:
1125: begin_form - prints the beginning of a form for directory or file link
1126:
1127: =item *
1128:
1129: start_fresh_session - settings whenever the user causes the indexer window
1130: to be launched
1131:
1132: =back
1133:
1134: =cut
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