1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.31 2002/01/06 01:29:52 harris41 Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # YEAR=1999
29: # 5/21/99, 5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer)
30: # 11/23 Gerd Kortemeyer
31: # YEAR=2000
32: # 07/20-08/04 H.K. Ng
33: # YEAR=2001
34: # 05/9-05/19/2001 H. K. Ng
35: # 05/21/2001 H. K. Ng
36: # 05/23/2001 H. K. Ng
37: # 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: #
45: ###
46:
47: ###############################################################################
48: ## ##
49: ## ORGANIZATION OF THIS PERL MODULE ##
50: ## ##
51: ## 1. Description of functions ##
52: ## 2. Modules used by this module ##
53: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
54: ## 4. BEGIN block (to be run once after compilation) ##
55: ## 5. Handling routine called via Apache and mod_perl ##
56: ## 6. Other subroutines ##
57: ## ##
58: ###############################################################################
59:
60: package Apache::lonindexer;
61:
62: # ------------------------------------------------- modules used by this module
63: use strict;
64: use Apache::lonnet();
65: use Apache::loncommon();
66: use Apache::Constants qw(:common);
67: use Apache::File;
68: use GDBM_File;
69:
70: # ---------------------------------------- variables used throughout the module
71: my %hash; # tied to a user-specific gdbm file
72: my %dirs; # keys are directories, values are the open/close status
73: my %language; # has the reference information present in language.tab
74:
75: # ----- Values which are set by the handler subroutine and are accessible to
76: # ----- other methods.
77: my $extrafield; # default extra table cell
78: my $fnum; # file counter
79: my $dnum; # directory counter
80:
81: # ----------------------------- Handling routine called via Apache and mod_perl
82: sub handler {
83: my $r = shift;
84: $r->content_type('text/html');
85: $r->send_http_header;
86: return OK if $r->header_only;
87: $fnum=0;
88: $dnum=0;
89: untie %hash;
90:
91: # ------------------------------------- read in machine configuration variables
92: my $iconpath= $r->dir_config('lonIconsURL') . "/";
93: my $domain = $r->dir_config('lonDefDomain');
94: my $role = $r->dir_config('lonRole');
95: my $loadlim = $r->dir_config('lonLoadLim');
96: my $servadm = $r->dir_config('lonAdmEMail');
97: my $sysadm = $r->dir_config('lonSysEMail');
98: my $lonhost = $r->dir_config('lonHostID');
99: my $tabdir = $r->dir_config('lonTabDir');
100:
101: my $fileclr='#ffffe6';
102: my $line;
103: my (@attrchk,@openpath);
104: my $uri=$r->uri;
105:
106: # -------------------------------------- see if called from an interactive mode
107: &get_unprocessed_cgi();
108:
109: my $closebutton='';
110: my $groupimportbutton='';
111: my $colspan='';
112:
113: $extrafield='';
114: my $diropendb =
115: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
116:
117: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
118: if ($ENV{'form.launch'} eq '1') {
119: &start_fresh_session();
120: }
121:
122: # -------------------- refresh environment with user database values (in %hash)
123: if ($hash{'mode_catalog'} eq 'interactive') {
124: $ENV{'form.catalogmode'}='interactive';
125: }
126: if ($hash{'mode_catalog'} eq 'groupimport') {
127: $ENV{'form.catalogmode'}='groupimport';
128: }
129:
130: # --------------------- define extra fields and buttons in case of special mode
131: if ($ENV{'form.catalogmode'} eq 'interactive') {
132: $hash{'mode_catalog'}='interactive';
133: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
134: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
135: ' border="0" /></td>';
136: $colspan=" colspan='2' ";
137: $closebutton=<<END;
138: <input type="button" name="close" value='CLOSE' onClick="self.close()">
139: END
140: }
141: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
142: $hash{'mode_catalog'}='groupimport';
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: $groupimportbutton=<<END;
151: <input type="button" name="groupimport" value='GROUP IMPORT'
152: onClick="javascript:select_group()">
153: END
154: }
155:
156: # ------ set catalogmodefunctions to have extra needed javascript functionality
157: my $catalogmodefunctions='';
158: if ($ENV{'form.catalogmode'} eq 'interactive' or
159: $ENV{'form.catalogmode'} eq 'groupimport') {
160: $catalogmodefunctions=<<END;
161: function select_data(title,url) {
162: changeTitle(title);
163: changeURL(url);
164: self.close();
165: }
166: function select_group() {
167: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value;
168: }
169: function changeTitle(val) {
170: if (opener.inf.document.forms.resinfo.elements.t) {
171: opener.inf.document.forms.resinfo.elements.t.value=val;
172: }
173: }
174: function changeURL(val) {
175: if (opener.inf.document.forms.resinfo.elements.u) {
176: opener.inf.document.forms.resinfo.elements.u.value=val;
177: }
178: }
179: END
180: }
181: if ($ENV{'form.catalogmode'} eq 'groupimport') {
182: $catalogmodefunctions.=<<END;
183: var acts='';
184: function queue(val) {
185: if (eval("document.forms."+val+".filelink.checked")) {
186: var l=val.length;
187: var v=val.substring(4,l);
188: document.forms.fileattr.acts.value+='1a'+v+'b';
189: }
190: else {
191: var l=val.length;
192: var v=val.substring(4,l);
193: document.forms.fileattr.acts.value+='0a'+v+'b';
194: }
195: }
196: function rep_dirpath(suffix,val) {
197: eval("document.forms.dirpath"+suffix+".acts.value=val");
198: }
199: END
200: }
201:
202: # ---------------------------------------------------------------- Print Header
203: $r->print(<<ENDHEADER);
204: <html>
205: <head>
206: <title>The LearningOnline Network With CAPA Directory Browser</title>
207:
208: <script type="text/javascript">
209: $catalogmodefunctions
210: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
211: var options = "width=" + w + ",height=" + h + ",";
212: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
213: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
214: var newWin = window.open(url, wdwName, options);
215: newWin.focus();
216: }
217: function gothere(val) {
218: window.location=val+'?acts='+document.forms.fileattr.acts.value;
219: }
220: </script>
221:
222: </head>
223: <body bgcolor="#FFFFFF">
224: ENDHEADER
225:
226: # - Evaluate actions from previous page (both cumulatively and chronologically)
227: if ($ENV{'form.catalogmode'} eq 'groupimport') {
228: my $acts=$ENV{'form.acts'};
229: my @Acts=split(/b/,$acts);
230: my %ahash;
231: my %achash;
232: my $ac=0;
233: # some initial hashes for working with data
234: foreach (@Acts) {
235: my ($state,$ref)=split(/a/);
236: $ahash{$ref}=$state;
237: $achash{$ref}=$ac;
238: $ac++;
239: }
240: # sorting through the actions and changing the tied database hash
241: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
242: my $key=$_;
243: if ($ahash{$key} eq '1') {
244: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
245: $hash{'pre_'.$key.'_title'};
246: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
247: $hash{'storectr'}+0;
248: $hash{'storectr'}++;
249: }
250: if ($ahash{$key} eq '0') {
251: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
252: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
253: }
254: }
255: }
256: # deleting the previously cached listing
257: foreach (keys %hash) {
258: if ($_ =~ /^pre_/ && $_ =~/link$/) {
259: my $key = $_;
260: $key =~ s/^pre_//;
261: $key =~ s/_[^_]*$//;
262: delete $hash{'pre_'.$key.'_title'};
263: delete $hash{'pre_'.$key.'_link'};
264: }
265: }
266: }
267:
268: # ---------------------------------------------------------------- output title
269: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
270: 'Network Directory Browser</font></h2>'."\n");
271: # ---------------------------------- get state of file attributes to be showing
272: if ($ENV{'form.attrs'} ne "") {
273: for (my $i=0; $i<=6; $i++) {
274: delete $hash{'display_attrs_'.$i};
275: if ($ENV{'form.attr'.$i} == 1) {
276: $attrchk[$i] = "checked";
277: $hash{'display_attrs_'.$i} = 1;
278: }
279: }
280: } else {
281: for (my $i=0; $i<=6; $i++) {
282: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
283: }
284: }
285: # ------------------------------- output state of file attributes to be showing
286: $r->print(<<END);
287: <b><font color="#666666">Display file attributes</font></b><br />
288: <form method="post" name="fileattr" action="$uri"
289: enctype="application/x-www-form-urlencoded">
290: <table border=0><tr>
291: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
292: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
293: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
294: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
295: </tr><tr>
296: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
297: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
298: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
299: <td> </td>
300: </tr></table>
301: <input type="hidden" name="dirPointer" value="on" />
302: <input type="hidden" name="acts" value="" />
303: <input type="submit" name="attrs" value="Review" />
304: <input type="submit" name="attrs" value="Refresh" />
305: $closebutton
306: $groupimportbutton
307: </form>
308: END
309:
310: # ----------------- output starting row to the indexed file/directory hierarchy
311: my $titleclr="#ddffff";
312: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");
313: $r->print("<table border=0><tr>\n");
314: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
315: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
316: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
317: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
318: if ($hash{'display_attrs_1'} == 1);
319: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
320: if ($hash{'display_attrs_2'} == 1);
321: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
322: if ($hash{'display_attrs_3'} == 1);
323: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
324: if ($hash{'display_attrs_4'} == 1);
325: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
326: if ($hash{'display_attrs_5'} == 1);
327: $r->print("</tr>");
328:
329: # ----------------- read in what directories have previously been set to "open"
330: foreach (keys %hash) {
331: if ($_ =~ /^diropen_status_/) {
332: my $key = $_;
333: $key =~ s/^diropen_status_//;
334: $dirs{$key} = $hash{$_};
335: }
336: }
337:
338: if ($ENV{'form.openuri'}) { # take care of review and refresh options
339: my $uri=$ENV{'form.openuri'};
340: if (exists($hash{'diropen_status_'.$uri})) {
341: my $cursta = $hash{'diropen_status_'.$uri};
342: $dirs{$uri} = 'open';
343: $hash{'diropen_status_'.$uri} = 'open';
344: if ($cursta eq 'open') {
345: $dirs{$uri} = 'closed';
346: $hash{'diropen_status_'.$uri} = 'closed';
347: }
348: } else {
349: $hash{'diropen_status_'.$uri} = 'open';
350: $dirs{$uri} = 'open';
351: }
352: }
353:
354: my $bredir = $ENV{'form.dirPointer'};
355: my $toplevel;
356: my $indent = 0;
357: $uri = $uri.'/' if $uri !~ /.*\/$/;
358:
359: if ($bredir ne "on") {
360: $hash{'top.level'} = $uri;
361: $toplevel = $uri;
362:
363: } else {
364: $toplevel = $hash{'top.level'};
365: }
366:
367: # -------------------------------- if not at top level, provide an uplink arrow
368: if ($toplevel ne "/res/"){
369: my (@uri_com) = split(/\//,$uri);
370: pop @uri_com;
371: my $upone = join('/',@uri_com);
372: my @list = qw (0);
373: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
374: $indent = 1;
375: }
376:
377: # -------- recursively go through all the directories and output as appropriate
378: &scanDir ($r,$toplevel,$indent,\%hash);
379:
380: # ---------------------------- embed hidden information useful for group import
381: $r->print("<form name='fnum'>");
382: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
383:
384: # -------------------------------------------------------------- end the tables
385: $r->print("</table>");
386: $r->print("</td></tr></table>");
387:
388: # --------------------------------------------------- end the output and return
389: $r->print("</body></html>\n");
390: untie(%hash);
391: } else {
392: $r->print('<html><head></head><body>Unable to tie hash to db '.
393: 'file</body></html>');
394: return OK;
395: }
396: return OK;
397: }
398:
399: # ----------------------------------------------- recursive scan of a directory
400: sub scanDir {
401: my ($r,$startdir,$indent,$hashref)=@_;
402: my ($compuri,$curdir);
403: my $dirptr=16384;
404: $indent++;
405:
406: my %dupdirs = %dirs;
407: my @list=&get_list($r,$startdir);
408: foreach my $line (@list) {
409: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
410: next if $strip =~ /.*\.meta$/;
411: my (@fileparts) = split(/\./,$strip);
412: if ($hash{'display_attrs_6'} != 1) {
413: if (scalar(@fileparts) >= 3) {
414: my $fext = pop @fileparts;
415: my $ov = pop @fileparts;
416: my $fname = join ('.',@fileparts,$fext);
417: next if (grep /$fname/,@list and $ov =~ /\d+/);
418: }
419: }
420:
421: if ($dom eq "domain") {
422: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
423: $curdir = $compuri;
424: } else {
425: # user, dir & file have name only, i.e., w/o path
426: $compuri = join('',$startdir,$strip,"/");
427: $curdir = $startdir;
428: }
429: my $diropen = "closed";
430: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
431: while (my ($key,$val)= each %dupdirs) {
432: if ($key eq $compuri and $val eq "open") {
433: $diropen = "opened";
434: delete $dupdirs{key},$dirs{$key};
435: }
436: }
437: }
438: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
439: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
440: }
441: $indent--;
442: }
443:
444: # --------------- get complete matched list based on the uri (returns an array)
445: sub get_list {
446: my ($r,$uri)=@_;
447: my @list;
448: my $luri = $uri;
449: $luri =~ s/\//_/g;
450:
451: if ($ENV{'form.attrs'} eq "Refresh") {
452: foreach (keys %hash) {
453: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
454: }
455: }
456:
457: if ($hash{'dirlist_files'.$luri}) {
458: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
459: } else {
460: @list = &Apache::lonnet::dirlist($uri);
461: $hash{'dirlist_files_'.$luri} = join('\n',@list);
462: }
463: return @list=&match_ext($r,@list);
464: }
465:
466: # -------------------- filters out files based on extensions (returns an array)
467: sub match_ext {
468: my ($r,@packlist)=@_;
469: my @trimlist;
470: my $nextline;
471: my @fileext;
472: my $dirptr=16384;
473:
474: foreach my $line (@packlist) {
475: chomp $line;
476: $line =~ s/^\/home\/httpd\/html//;
477: my @unpackline = split (/\&/,$line);
478: next if ($unpackline[0] eq ".");
479: next if ($unpackline[0] eq "..");
480: my @filecom = split (/\./,$unpackline[0]);
481: my $fext = pop(@filecom);
482: my $fnptr = $unpackline[3]&$dirptr;
483: if ($fnptr == 0 and $unpackline[3] ne "") {
484: my $embstyle = &Apache::loncommon::fileembstyle($fext);
485: push @trimlist,$line if (defined($embstyle) &&
486: $embstyle ne 'hdn' );
487: } else {
488: push @trimlist,$line;
489: }
490: }
491: @trimlist = sort (@trimlist);
492: return @trimlist;
493: }
494:
495: # ------------------------------- displays one line in appropriate table format
496: sub display_line {
497: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
498: my (@pathfn, $fndir, $fnptr);
499: my $dirptr=16384;
500: my $fileclr="#ffffe6";
501: my $iconpath= $r->dir_config('lonIconsURL') . "/";
502:
503: my @filecom = split (/\&/,$line);
504: my @pathcom = split (/\//,$filecom[0]);
505: my $listname = $pathcom[scalar(@pathcom)-1];
506: my $fnptr = $filecom[3]&$dirptr;
507: my $msg = 'View '.$filecom[0].' resources';
508: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
509:
510: my $tabtag="</td>";
511: my $i=0;
512:
513: while ($i<=5) {
514: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
515: if $hash{'display_attrs_'.$i} == 1;
516: $i++;
517: }
518:
519: # display uplink arrow
520: if ($filecom[1] eq "viewOneUp") {
521: $r->print("<tr>$extrafield");
522: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
523: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
524: '/" '.
525: 'onSubmit="return rep_dirpath(\'UP\','.
526: 'document.forms.fileattr.acts.value)" '.
527: 'enctype="application/x-www-form-urlencoded"'.
528: '>'."\n");
529: $r->print ('<input type=hidden name=openuri value="'.
530: $startdir.'">'."\n");
531: $r->print ('<input type="hidden" name="acts" value="">'."\n");
532: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
533: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
534: "\n");
535: $r->print("Up $tabtag</tr></form>\n");
536: return OK;
537: }
538:
539: # display domain
540: if ($filecom[1] eq "domain") {
541: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
542: if ($ENV{'form.dirPointer'} eq "on");
543: $r->print("<tr>$extrafield");
544: $r->print("<td bgcolor=$fileclr valign=bottom>");
545: &begin_form ($r,$filecom[0].'/');
546: my $anchor = $filecom[0].'/';
547: $anchor =~ s/\///g;
548: $r->print ('<a name="'.$anchor.'">');
549: $r->print ('<input type="hidden" name="acts" value="">');
550: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
551: $diropen.'.gif"');
552: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
553: "\n");
554: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
555: '/\')"><img src="'.$iconpath.'server.gif"');
556: $r->print (' border="0" /></a>'."\n");
557: $r->print("Domain - $listname $tabtag</tr></form>\n");
558: return OK;
559:
560: # display user directory
561: }
562: if ($filecom[1] eq "user") {
563: $r->print("<tr>$extrafield");
564: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
565: my $curdir = $startdir.$filecom[0].'/';
566: my $anchor = $curdir;
567: $anchor =~ s/\///g;
568: &begin_form ($r,$curdir);
569: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
570: 'whitespace1.gif" border="0" />'."\n");
571: $r->print ('<input type="hidden" name="acts" value="">');
572: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
573: '.gif"');
574: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
575: "\n");
576: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
577: $iconpath.'quill.gif border="0" name="'.$msg.
578: '" height="22" /></a>');
579: $r->print ($listname.$tabtag.'</tr></form>'."\n");
580: return OK;
581: }
582:
583: # display file
584: if ($fnptr == 0 and $filecom[3] ne "") {
585: my @file_ext = split (/\./,$listname);
586: my $curfext = $file_ext[-1];
587: # Set the icon for the file
588: my $iconname = "unknown.gif";
589: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
590: # The unless conditional that follows is a bit of overkill
591: $iconname = $curfext.".gif" unless
592: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
593: #
594: my $filelink = $startdir.$filecom[0];
595: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
596: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
597: my $title;
598: if ($ENV{'form.catalogmode'} eq 'interactive') {
599: $title=$listname;
600: $title = &Apache::lonnet::metadata($filelink,'title')
601: if ($metafile == 1);
602: $title=$listname unless $title;
603: $r->print("<a href='javascript:select_data(\"",
604: $title,'","',$filelink,"\")'>");
605: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
606: "\n");
607: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
608: }
609: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
610: $title=$listname;
611: $title = &Apache::lonnet::metadata($filelink,'title')
612: if ($metafile == 1);
613: $title=$listname unless $title;
614: $r->print("<form name='form$fnum'>\n");
615: $r->print("<input type='checkbox' name='filelink"."' ".
616: "value='$filelink' onClick='".
617: "javascript:queue(\"form$fnum\")' ");
618: if ($hash{'store_'.$filelink}) {
619: $r->print("checked");
620: }
621: $r->print(">\n");
622: $r->print("<input type='hidden' name='title"."' ".
623: "value='$title'>\n");
624: $r->print("</form>\n");
625: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
626: $hash{"pre_${fnum}_link"}=$filelink;
627: $hash{"pre_${fnum}_title"}=$title;
628: $fnum++;
629: }
630:
631: if ($indent > 0 and $indent < 11) {
632: $r->print("<img src=",$iconpath,"whitespace",$indent,
633: ".gif border='0' />\n");
634: } elsif ($indent >0) {
635: my $ten = int($indent/10.);
636: my $rem = $indent%10.0;
637: my $count = 0;
638: while ($count < $ten) {
639: $r->print("<img src=",$iconpath,
640: "whitespace10.gif border='0' />\n");
641: $count++;
642: }
643: $r->print("<img src=",$iconpath,"whitespace",$rem,
644: ".gif border='0' />\n") if $rem > 0;
645: }
646:
647: $r->print("<img src=$iconpath$iconname border='0' />\n");
648: $r->print (" <a href=\"javascript:openWindow('".$filelink.
649: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
650: " TARGET=_self>$listname</a> ");
651:
652: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
653: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
654: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
655:
656: $r->print("</td>\n");
657: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
658: $filecom[8]," </td>\n")
659: if $hash{'display_attrs_0'} == 1;
660: $r->print("<td bgcolor=$fileclr valign=bottom> ".
661: (localtime($filecom[9]))." </td>\n")
662: if $hash{'display_attrs_1'} == 1;
663: $r->print("<td bgcolor=$fileclr valign=bottom> ".
664: (localtime($filecom[10]))." </td>\n")
665: if $hash{'display_attrs_2'} == 1;
666:
667: if ($hash{'display_attrs_3'} == 1) {
668: my $author = &Apache::lonnet::metadata($filelink,'author')
669: if ($metafile == 1);
670: $author = ' ' if (!$author);
671: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
672: " </td>\n");
673: }
674: if ($hash{'display_attrs_4'} == 1) {
675: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
676: if ($metafile == 1);
677: $keywords = ' ' if (!$keywords);
678: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
679: " </td>\n");
680: }
681: if ($hash{'display_attrs_5'} == 1) {
682: my $lang = &Apache::lonnet::metadata($filelink,'language')
683: if ($metafile == 1);
684: $lang = &Apache::loncommon::languagedescription($lang);
685: $lang = ' ' if (!$lang);
686: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
687: " </td>\n");
688: }
689: $r->print("</tr>\n");
690: }
691:
692: # -- display directory
693: if ($fnptr == $dirptr) {
694: my @file_ext = split (/\./,$listname);
695: my $curfext = $file_ext[scalar(@file_ext)-1];
696: my $curdir = $startdir.$filecom[0].'/';
697: my $anchor = $curdir;
698: $anchor =~ s/\///g;
699: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
700: &begin_form ($r,$curdir);
701: my $indentm1 = $indent-1;
702: if ($indentm1 < 11 and $indentm1 > 0) {
703: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
704: ".gif border='0' />\n");
705: } else {
706: my $ten = int($indentm1/10.);
707: my $rem = $indentm1%10.0;
708: my $count = 0;
709: while ($count < $ten) {
710: $r->print ("<img src=",$iconpath
711: ,"whitespace10.gif border='0' />\n");
712: $count++;
713: }
714: $r->print ("<img src=",$iconpath,"whitespace",$rem,
715: ".gif border='0' />\n") if $rem > 0;
716: }
717: $r->print ('<input type="hidden" name="acts" value="">');
718: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
719: 'folder_pointer_'.$diropen.'.gif"');
720: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
721: "\n");
722: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
723: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
724: "\n");
725: $r->print ("$listname$tabtag</tr></form>\n");
726: }
727:
728: }
729:
730: # ------------------- prints the beginning of a form for directory or file link
731: sub begin_form {
732: my ($r,$uri) = @_;
733: my $anchor = $uri;
734: $anchor =~ s/\///g;
735: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
736: '#'.$anchor.
737: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
738: ',document.forms.fileattr.acts.value)" '.
739: 'enctype="application/x-www-form-urlencoded">'."\n");
740: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
741: "\n");
742: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
743: $dnum++;
744: }
745:
746: # ----------- grab unprocessed CGI variables that may have been appended to URL
747: sub get_unprocessed_cgi {
748: foreach (split(/&/,$ENV{'QUERY_STRING'})) {
749: my ($name, $value) = split(/=/,$_);
750: $value =~ tr/+/ /;
751: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
752: if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') {
753: $ENV{'form.'.$name}=$value;
754: }
755: }
756: }
757:
758: # --------- settings whenever the user causes the indexer window to be launched
759: sub start_fresh_session {
760: delete $hash{'mode_catalog'};
761: foreach (keys %hash) {
762: if ($_ =~ /^pre_/) {
763: delete $hash{$_};
764: }
765: if ($_ =~ /^store/) {
766: delete $hash{$_};
767: }
768: }
769: }
770:
771: 1;
772:
773: =head1 NAME
774:
775: Apache::lonindexer - mod_perl module for cross server filesystem browsing
776:
777: =head1 SYNOPSIS
778:
779: Invoked by /etc/httpd/conf/srm.conf:
780:
781: <LocationMatch "^/res.*/$">
782: SetHandler perl-script
783: PerlHandler Apache::lonindexer
784: </LocationMatch>
785:
786: =head1 INTRODUCTION
787:
788: This module enables a scheme of browsing across a cross server.
789:
790: This is part of the LearningOnline Network with CAPA project
791: described at http://www.lon-capa.org.
792:
793: =head1 BEGIN SUBROUTINE
794:
795: This routine is only run once after compilation.
796:
797: =over 4
798:
799: =item *
800:
801: Initializes %language hash table.
802:
803: =back
804:
805: =head1 HANDLER SUBROUTINE
806:
807: This routine is called by Apache and mod_perl.
808:
809: =over 4
810:
811: =item *
812:
813: read in machine configuration variables
814:
815: =item *
816:
817: see if called from an interactive mode
818:
819: =item *
820:
821: refresh environment with user database values (in %hash)
822:
823: =item *
824:
825: define extra fields and buttons in case of special mode
826:
827: =item *
828:
829: set catalogmodefunctions to have extra needed javascript functionality
830:
831: =item *
832:
833: print header
834:
835: =item *
836:
837: evaluate actions from previous page (both cumulatively and chronologically)
838:
839: =item *
840:
841: output title
842:
843: =item *
844:
845: get state of file attributes to be showing
846:
847: =item *
848:
849: output state of file attributes to be showing
850:
851: =item *
852:
853: output starting row to the indexed file/directory hierarchy
854:
855: =item *
856:
857: read in what directories have previously been set to "open"
858:
859: =item *
860:
861: if not at top level, provide an uplink arrow
862:
863: =item *
864:
865: recursively go through all the directories and output as appropriate
866:
867: =item *
868:
869: information useful for group import
870:
871: =item *
872:
873: end the tables
874:
875: =item *
876:
877: end the output and return
878:
879: =back
880:
881: =head1 OTHER SUBROUTINES
882:
883: =over 4
884:
885: =item *
886:
887: scanDir - recursive scan of a directory
888:
889: =item *
890:
891: get_list - get complete matched list based on the uri (returns an array)
892:
893: =item *
894:
895: match_ext - filters out files based on extensions (returns an array)
896:
897: =item *
898:
899: display_line - displays one line in appropriate table format
900:
901: =item *
902:
903: begin_form - prints the beginning of a form for directory or file link
904:
905: =item *
906:
907: get_unprocessed_cgi - grab unprocessed CGI variables that may have been
908: appended to URL
909:
910: =item *
911:
912: start_fresh_session - settings whenever the user causes the indexer window
913: to be launched
914:
915: =back
916:
917: =cut
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