1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.28 2001/12/13 13:38:14 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::Constants qw(:common);
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: # ---------------------------------------------------------------------- BEGIN
81: sub BEGIN {
82: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
83: '/language.tab');
84: while(<$fh>) {
85: $_=~/(\w+)\s+([\w\s\-]+)/;
86: $language{$1}=$2;
87: }
88: }
89:
90: # ----------------------------- Handling routine called via Apache and mod_perl
91: sub handler {
92: my $r = shift;
93: $r->content_type('text/html');
94: $r->send_http_header;
95: return OK if $r->header_only;
96: $fnum=0;
97: $dnum=0;
98: untie %hash;
99:
100: # ------------------------------------- read in machine configuration variables
101: my $iconpath= $r->dir_config('lonIconsURL') . "/";
102: my $domain = $r->dir_config('lonDefDomain');
103: my $role = $r->dir_config('lonRole');
104: my $loadlim = $r->dir_config('lonLoadLim');
105: my $servadm = $r->dir_config('lonAdmEMail');
106: my $sysadm = $r->dir_config('lonSysEMail');
107: my $lonhost = $r->dir_config('lonHostID');
108: my $tabdir = $r->dir_config('lonTabDir');
109:
110: my $fileclr='#ffffe6';
111: my $line;
112: my (@attrchk,@openpath);
113: my $uri=$r->uri;
114:
115: # -------------------------------------- see if called from an interactive mode
116: &get_unprocessed_cgi();
117:
118: my $closebutton='';
119: my $groupimportbutton='';
120: my $colspan='';
121:
122: $extrafield='';
123: my $diropendb =
124: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
125:
126: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
127: if ($ENV{'form.launch'} eq '1') {
128: &start_fresh_session();
129: }
130:
131: # -------------------- refresh environment with user database values (in %hash)
132: if ($hash{'mode_catalog'} eq 'interactive') {
133: $ENV{'form.catalogmode'}='interactive';
134: }
135: if ($hash{'mode_catalog'} eq 'groupimport') {
136: $ENV{'form.catalogmode'}='groupimport';
137: }
138:
139: # --------------------- define extra fields and buttons in case of special mode
140: if ($ENV{'form.catalogmode'} eq 'interactive') {
141: $hash{'mode_catalog'}='interactive';
142: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
143: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
144: ' border="0" /></td>';
145: $colspan=" colspan='2' ";
146: $closebutton=<<END;
147: <input type="button" name="close" value='CLOSE' onClick="self.close()">
148: END
149: }
150: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
151: $hash{'mode_catalog'}='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:
165: # ------ set catalogmodefunctions to have extra needed javascript functionality
166: my $catalogmodefunctions='';
167: if ($ENV{'form.catalogmode'} eq 'interactive' or
168: $ENV{'form.catalogmode'} eq 'groupimport') {
169: $catalogmodefunctions=<<END;
170: function select_data(title,url) {
171: changeTitle(title);
172: changeURL(url);
173: self.close();
174: }
175: function select_group() {
176: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value;
177: }
178: function changeTitle(val) {
179: if (opener.inf.document.forms.resinfo.elements.t) {
180: opener.inf.document.forms.resinfo.elements.t.value=val;
181: }
182: }
183: function changeURL(val) {
184: if (opener.inf.document.forms.resinfo.elements.u) {
185: opener.inf.document.forms.resinfo.elements.u.value=val;
186: }
187: }
188: END
189: }
190: if ($ENV{'form.catalogmode'} eq 'groupimport') {
191: $catalogmodefunctions.=<<END;
192: var acts='';
193: function queue(val) {
194: if (eval("document.forms."+val+".filelink.checked")) {
195: var l=val.length;
196: var v=val.substring(4,l);
197: document.forms.fileattr.acts.value+='1a'+v+'b';
198: }
199: else {
200: var l=val.length;
201: var v=val.substring(4,l);
202: document.forms.fileattr.acts.value+='0a'+v+'b';
203: }
204: }
205: function rep_dirpath(suffix,val) {
206: eval("document.forms.dirpath"+suffix+".acts.value=val");
207: }
208: END
209: }
210:
211: # ---------------------------------------------------------------- Print Header
212: $r->print(<<ENDHEADER);
213: <html>
214: <head>
215: <title>The LearningOnline Network With CAPA Directory Browser</title>
216:
217: <script type="text/javascript">
218: $catalogmodefunctions
219: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
220: var options = "width=" + w + ",height=" + h + ",";
221: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
222: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
223: var newWin = window.open(url, wdwName, options);
224: newWin.focus();
225: }
226: function gothere(val) {
227: window.location=val+'?acts='+document.forms.fileattr.acts.value;
228: }
229: </script>
230:
231: </head>
232: <body bgcolor="#FFFFFF">
233: ENDHEADER
234:
235: # - Evaluate actions from previous page (both cumulatively and chronologically)
236: if ($ENV{'form.catalogmode'} eq 'groupimport') {
237: my $acts=$ENV{'form.acts'};
238: my @Acts=split(/b/,$acts);
239: my %ahash;
240: my %achash;
241: my $ac=0;
242: # some initial hashes for working with data
243: foreach (@Acts) {
244: my ($state,$ref)=split(/a/);
245: $ahash{$ref}=$state;
246: $achash{$ref}=$ac;
247: $ac++;
248: }
249: # sorting through the actions and changing the tied database hash
250: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
251: my $key=$_;
252: if ($ahash{$key} eq '1') {
253: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
254: $hash{'pre_'.$key.'_title'};
255: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
256: $hash{'storectr'}+0;
257: $hash{'storectr'}++;
258: }
259: if ($ahash{$key} eq '0') {
260: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
261: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
262: }
263: }
264: }
265: # deleting the previously cached listing
266: foreach (keys %hash) {
267: if ($_ =~ /^pre_/ && $_ =~/link$/) {
268: my $key = $_;
269: $key =~ s/^pre_//;
270: $key =~ s/_[^_]*$//;
271: delete $hash{'pre_'.$key.'_title'};
272: delete $hash{'pre_'.$key.'_link'};
273: }
274: }
275: }
276:
277: # ---------------------------------------------------------------- output title
278: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
279: 'Network Directory Browser</font></h2>'."\n");
280: # ---------------------------------- get state of file attributes to be showing
281: if ($ENV{'form.attrs'} ne "") {
282: for (my $i=0; $i<=6; $i++) {
283: delete $hash{'display_attrs_'.$i};
284: if ($ENV{'form.attr'.$i} == 1) {
285: $attrchk[$i] = "checked";
286: $hash{'display_attrs_'.$i} = 1;
287: }
288: }
289: } else {
290: for (my $i=0; $i<=6; $i++) {
291: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
292: }
293: }
294: # ------------------------------- output state of file attributes to be showing
295: $r->print(<<END);
296: <b><font color="#666666">Display file attributes</font></b><br />
297: <form method="post" name="fileattr" action="$uri"
298: enctype="application/x-www-form-urlencoded">
299: <table border=0><tr>
300: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
301: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
302: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
303: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
304: </tr><tr>
305: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
306: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
307: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
308: <td> </td>
309: </tr></table>
310: <input type="hidden" name="dirPointer" value="on" />
311: <input type="hidden" name="acts" value="" />
312: <input type="submit" name="attrs" value="Review" />
313: <input type="submit" name="attrs" value="Refresh" />
314: $closebutton
315: $groupimportbutton
316: </form>
317: END
318:
319: # ----------------- output starting row to the indexed file/directory hierarchy
320: my $titleclr="#ddffff";
321: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");
322: $r->print("<table border=0><tr>\n");
323: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
324: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
325: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
326: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
327: if ($hash{'display_attrs_1'} == 1);
328: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
329: if ($hash{'display_attrs_2'} == 1);
330: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
331: if ($hash{'display_attrs_3'} == 1);
332: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
333: if ($hash{'display_attrs_4'} == 1);
334: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
335: if ($hash{'display_attrs_5'} == 1);
336: $r->print("</tr>");
337:
338: # ----------------- read in what directories have previously been set to "open"
339: foreach (keys %hash) {
340: if ($_ =~ /^diropen_status_/) {
341: my $key = $_;
342: $key =~ s/^diropen_status_//;
343: $dirs{$key} = $hash{$_};
344: }
345: }
346:
347: if ($ENV{'form.openuri'}) { # take care of review and refresh options
348: my $uri=$ENV{'form.openuri'};
349: if (exists($hash{'diropen_status_'.$uri})) {
350: my $cursta = $hash{'diropen_status_'.$uri};
351: $dirs{$uri} = 'open';
352: $hash{'diropen_status_'.$uri} = 'open';
353: if ($cursta eq 'open') {
354: $dirs{$uri} = 'closed';
355: $hash{'diropen_status_'.$uri} = 'closed';
356: }
357: } else {
358: $hash{'diropen_status_'.$uri} = 'open';
359: $dirs{$uri} = 'open';
360: }
361: }
362:
363: my $bredir = $ENV{'form.dirPointer'};
364: my $toplevel;
365: my $indent = 0;
366: $uri = $uri.'/' if $uri !~ /.*\/$/;
367:
368: if ($bredir ne "on") {
369: $hash{'top.level'} = $uri;
370: $toplevel = $uri;
371:
372: } else {
373: $toplevel = $hash{'top.level'};
374: }
375:
376: # -------------------------------- if not at top level, provide an uplink arrow
377: if ($toplevel ne "/res/"){
378: my (@uri_com) = split(/\//,$uri);
379: pop @uri_com;
380: my $upone = join('/',@uri_com);
381: my @list = qw (0);
382: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
383: $indent = 1;
384: }
385:
386: # -------- recursively go through all the directories and output as appropriate
387: &scanDir ($r,$toplevel,$indent,\%hash);
388:
389: # ---------------------------- embed hidden information useful for group import
390: $r->print("<form name='fnum'>");
391: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
392:
393: # -------------------------------------------------------------- end the tables
394: $r->print("</table>");
395: $r->print("</td></tr></table>");
396:
397: # --------------------------------------------------- end the output and return
398: $r->print("</body></html>\n");
399: untie(%hash);
400: } else {
401: $r->print('<html><head></head><body>Unable to tie hash to db '.
402: 'file</body></html>');
403: return OK;
404: }
405: return OK;
406: }
407:
408: # ----------------------------------------------- recursive scan of a directory
409: sub scanDir {
410: my ($r,$startdir,$indent,$hashref)=@_;
411: my ($compuri,$curdir);
412: my $dirptr=16384;
413: $indent++;
414:
415: my %dupdirs = %dirs;
416: my @list=&get_list($r,$startdir);
417: foreach my $line (@list) {
418: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
419: next if $strip =~ /.*\.meta$/;
420: my (@fileparts) = split(/\./,$strip);
421: if ($hash{'display_attrs_6'} != 1) {
422: if (scalar(@fileparts) >= 3) {
423: my $fext = pop @fileparts;
424: my $ov = pop @fileparts;
425: my $fname = join ('.',@fileparts,$fext);
426: next if (grep /$fname/,@list and $ov =~ /\d+/);
427: }
428: }
429:
430: if ($dom eq "domain") {
431: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
432: $curdir = $compuri;
433: } else {
434: # user, dir & file have name only, i.e., w/o path
435: $compuri = join('',$startdir,$strip,"/");
436: $curdir = $startdir;
437: }
438: my $diropen = "closed";
439: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
440: while (my ($key,$val)= each %dupdirs) {
441: if ($key eq $compuri and $val eq "open") {
442: $diropen = "opened";
443: delete $dupdirs{key},$dirs{$key};
444: }
445: }
446: }
447: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
448: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
449: }
450: $indent--;
451: }
452:
453: # --------------- get complete matched list based on the uri (returns an array)
454: sub get_list {
455: my ($r,$uri)=@_;
456: my @list;
457: my $luri = $uri;
458: $luri =~ s/\//_/g;
459:
460: if ($ENV{'form.attrs'} eq "Refresh") {
461: foreach (keys %hash) {
462: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
463: }
464: }
465:
466: if ($hash{'dirlist_files'.$luri}) {
467: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
468: } else {
469: @list = &Apache::lonnet::dirlist($uri);
470: $hash{'dirlist_files_'.$luri} = join('\n',@list);
471: }
472: return @list=&match_ext($r,@list);
473: }
474:
475: # -------------------- filters out files based on extensions (returns an array)
476: sub match_ext {
477: my ($r,@packlist)=@_;
478: my @trimlist;
479: my $nextline;
480: my @fileext;
481: my $dirptr=16384;
482:
483: foreach my $line (@packlist) {
484: chomp $line;
485: $line =~ s/^\/home\/httpd\/html//;
486: my @unpackline = split (/\&/,$line);
487: next if ($unpackline[0] eq ".");
488: next if ($unpackline[0] eq "..");
489: my @filecom = split (/\./,$unpackline[0]);
490: my $fext = pop(@filecom);
491: my $fnptr = $unpackline[3]&$dirptr;
492: if ($fnptr == 0 and $unpackline[3] ne "") {
493: my $embstyle = &Apache::loncommon::fileembstyle($fext);
494: push @trimlist,$line if (defined($embstyle) &&
495: $embstyle ne 'hdn' );
496: } else {
497: push @trimlist,$line;
498: }
499: }
500: @trimlist = sort (@trimlist);
501: return @trimlist;
502: }
503:
504: # ------------------------------- displays one line in appropriate table format
505: sub display_line {
506: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
507: my (@pathfn, $fndir, $fnptr);
508: my $dirptr=16384;
509: my $fileclr="#ffffe6";
510: my $iconpath= $r->dir_config('lonIconsURL') . "/";
511:
512: my @filecom = split (/\&/,$line);
513: my @pathcom = split (/\//,$filecom[0]);
514: my $listname = $pathcom[scalar(@pathcom)-1];
515: my $fnptr = $filecom[3]&$dirptr;
516: my $msg = 'View '.$filecom[0].' resources';
517: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
518:
519: my $tabtag="</td>";
520: my $i=0;
521:
522: while ($i<=5) {
523: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
524: if $hash{'display_attrs_'.$i} == 1;
525: $i++;
526: }
527:
528: # display uplink arrow
529: if ($filecom[1] eq "viewOneUp") {
530: $r->print("<tr>$extrafield");
531: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
532: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
533: '/" '.
534: 'onSubmit="return rep_dirpath(\'UP\','.
535: 'document.forms.fileattr.acts.value)" '.
536: 'enctype="application/x-www-form-urlencoded"'.
537: '>'."\n");
538: $r->print ('<input type=hidden name=openuri value="'.
539: $startdir.'">'."\n");
540: $r->print ('<input type="hidden" name="acts" value="">'."\n");
541: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
542: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
543: "\n");
544: $r->print("Up $tabtag</tr></form>\n");
545: return OK;
546: }
547:
548: # display domain
549: if ($filecom[1] eq "domain") {
550: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
551: if ($ENV{'form.dirPointer'} eq "on");
552: $r->print("<tr>$extrafield");
553: $r->print("<td bgcolor=$fileclr valign=bottom>");
554: &begin_form ($r,$filecom[0].'/');
555: my $anchor = $filecom[0].'/';
556: $anchor =~ s/\///g;
557: $r->print ('<a name="'.$anchor.'">');
558: $r->print ('<input type="hidden" name="acts" value="">');
559: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
560: $diropen.'.gif"');
561: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
562: "\n");
563: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
564: '/\')"><img src="'.$iconpath.'server.gif"');
565: $r->print (' border="0" /></a>'."\n");
566: $r->print("Domain - $listname $tabtag</tr></form>\n");
567: return OK;
568:
569: # display user directory
570: }
571: if ($filecom[1] eq "user") {
572: $r->print("<tr>$extrafield");
573: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
574: my $curdir = $startdir.$filecom[0].'/';
575: my $anchor = $curdir;
576: $anchor =~ s/\///g;
577: &begin_form ($r,$curdir);
578: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
579: 'whitespace1.gif" border="0" />'."\n");
580: $r->print ('<input type="hidden" name="acts" value="">');
581: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
582: '.gif"');
583: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
584: "\n");
585: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
586: $iconpath.'quill.gif border="0" name="'.$msg.
587: '" height="22" /></a>');
588: $r->print ($listname.$tabtag.'</tr></form>'."\n");
589: return OK;
590: }
591:
592: # display file
593: if ($fnptr == 0 and $filecom[3] ne "") {
594: my @file_ext = split (/\./,$listname);
595: my $curfext = $file_ext[-1];
596: # Set the icon for the file
597: my $iconname = "unknown.gif";
598: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
599: # The unless conditional that follows is a bit of overkill
600: $iconname = $curfext.".gif" unless
601: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
602: #
603: my $filelink = $startdir.$filecom[0];
604: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
605: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
606: my $title;
607: if ($ENV{'form.catalogmode'} eq 'interactive') {
608: $title=$listname;
609: $title = &Apache::lonnet::metadata($filelink,'title')
610: if ($metafile == 1);
611: $title=$listname unless $title;
612: $r->print("<a href='javascript:select_data(\"",
613: $title,'","',$filelink,"\")'>");
614: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
615: "\n");
616: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
617: }
618: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
619: $title=$listname;
620: $title = &Apache::lonnet::metadata($filelink,'title')
621: if ($metafile == 1);
622: $title=$listname unless $title;
623: $r->print("<form name='form$fnum'>\n");
624: $r->print("<input type='checkbox' name='filelink"."' ".
625: "value='$filelink' onClick='".
626: "javascript:queue(\"form$fnum\")' ");
627: if ($hash{'store_'.$filelink}) {
628: $r->print("checked");
629: }
630: $r->print(">\n");
631: $r->print("<input type='hidden' name='title"."' ".
632: "value='$title'>\n");
633: $r->print("</form>\n");
634: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
635: $hash{"pre_${fnum}_link"}=$filelink;
636: $hash{"pre_${fnum}_title"}=$title;
637: $fnum++;
638: }
639:
640: if ($indent > 0 and $indent < 11) {
641: $r->print("<img src=",$iconpath,"whitespace",$indent,
642: ".gif border='0' />\n");
643: } elsif ($indent >0) {
644: my $ten = int($indent/10.);
645: my $rem = $indent%10.0;
646: my $count = 0;
647: while ($count < $ten) {
648: $r->print("<img src=",$iconpath,
649: "whitespace10.gif border='0' />\n");
650: $count++;
651: }
652: $r->print("<img src=",$iconpath,"whitespace",$rem,
653: ".gif border='0' />\n") if $rem > 0;
654: }
655:
656: $r->print("<img src=$iconpath$iconname border='0' />\n");
657: $r->print (" <a href=\"javascript:openWindow('".$filelink.
658: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
659: " TARGET=_self>$listname</a> ");
660:
661: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
662: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
663: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
664:
665: $r->print("</td>\n");
666: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
667: $filecom[8]," </td>\n")
668: if $hash{'display_attrs_0'} == 1;
669: $r->print("<td bgcolor=$fileclr valign=bottom> ".
670: (localtime($filecom[9]))." </td>\n")
671: if $hash{'display_attrs_1'} == 1;
672: $r->print("<td bgcolor=$fileclr valign=bottom> ".
673: (localtime($filecom[10]))." </td>\n")
674: if $hash{'display_attrs_2'} == 1;
675:
676: if ($hash{'display_attrs_3'} == 1) {
677: my $author = &Apache::lonnet::metadata($filelink,'author')
678: if ($metafile == 1);
679: $author = ' ' if (!$author);
680: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
681: " </td>\n");
682: }
683: if ($hash{'display_attrs_4'} == 1) {
684: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
685: if ($metafile == 1);
686: $keywords = ' ' if (!$keywords);
687: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
688: " </td>\n");
689: }
690: if ($hash{'display_attrs_5'} == 1) {
691: my $lang = &Apache::lonnet::metadata($filelink,'language')
692: if ($metafile == 1);
693: $lang = &Apache::loncommon::languagedescription($lang);
694: $lang = ' ' if (!$lang);
695: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
696: " </td>\n");
697: }
698: $r->print("</tr>\n");
699: }
700:
701: # -- display directory
702: if ($fnptr == $dirptr) {
703: my @file_ext = split (/\./,$listname);
704: my $curfext = $file_ext[scalar(@file_ext)-1];
705: my $curdir = $startdir.$filecom[0].'/';
706: my $anchor = $curdir;
707: $anchor =~ s/\///g;
708: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
709: &begin_form ($r,$curdir);
710: my $indentm1 = $indent-1;
711: if ($indentm1 < 11 and $indentm1 > 0) {
712: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
713: ".gif border='0' />\n");
714: } else {
715: my $ten = int($indentm1/10.);
716: my $rem = $indentm1%10.0;
717: my $count = 0;
718: while ($count < $ten) {
719: $r->print ("<img src=",$iconpath
720: ,"whitespace10.gif border='0' />\n");
721: $count++;
722: }
723: $r->print ("<img src=",$iconpath,"whitespace",$rem,
724: ".gif border='0' />\n") if $rem > 0;
725: }
726: $r->print ('<input type="hidden" name="acts" value="">');
727: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
728: 'folder_pointer_'.$diropen.'.gif"');
729: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
730: "\n");
731: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
732: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
733: "\n");
734: $r->print ("$listname$tabtag</tr></form>\n");
735: }
736:
737: }
738:
739: # ------------------- prints the beginning of a form for directory or file link
740: sub begin_form {
741: my ($r,$uri) = @_;
742: my $anchor = $uri;
743: $anchor =~ s/\///g;
744: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
745: '#'.$anchor.
746: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
747: ',document.forms.fileattr.acts.value)" '.
748: 'enctype="application/x-www-form-urlencoded">'."\n");
749: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
750: "\n");
751: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
752: $dnum++;
753: }
754:
755: # ----------- grab unprocessed CGI variables that may have been appended to URL
756: sub get_unprocessed_cgi {
757: foreach (split(/&/,$ENV{'QUERY_STRING'})) {
758: my ($name, $value) = split(/=/,$_);
759: $value =~ tr/+/ /;
760: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
761: if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') {
762: $ENV{'form.'.$name}=$value;
763: }
764: }
765: }
766:
767: # --------- settings whenever the user causes the indexer window to be launched
768: sub start_fresh_session {
769: delete $hash{'mode_catalog'};
770: foreach (keys %hash) {
771: if ($_ =~ /^pre_/) {
772: delete $hash{$_};
773: }
774: if ($_ =~ /^store/) {
775: delete $hash{$_};
776: }
777: }
778: }
779:
780: 1;
781:
782: =head1 NAME
783:
784: Apache::lonindexer - mod_perl module for cross server filesystem browsing
785:
786: =head1 SYNOPSIS
787:
788: Invoked by /etc/httpd/conf/srm.conf:
789:
790: <LocationMatch "^/res.*/$">
791: SetHandler perl-script
792: PerlHandler Apache::lonindexer
793: </LocationMatch>
794:
795: =head1 INTRODUCTION
796:
797: This module enables a scheme of browsing across a cross server.
798:
799: This is part of the LearningOnline Network with CAPA project
800: described at http://www.lon-capa.org.
801:
802: =head1 BEGIN SUBROUTINE
803:
804: This routine is only run once after compilation.
805:
806: =over 4
807:
808: =item *
809:
810: Initializes %language hash table.
811:
812: =back
813:
814: =head1 HANDLER SUBROUTINE
815:
816: This routine is called by Apache and mod_perl.
817:
818: =over 4
819:
820: =item *
821:
822: read in machine configuration variables
823:
824: =item *
825:
826: see if called from an interactive mode
827:
828: =item *
829:
830: refresh environment with user database values (in %hash)
831:
832: =item *
833:
834: define extra fields and buttons in case of special mode
835:
836: =item *
837:
838: set catalogmodefunctions to have extra needed javascript functionality
839:
840: =item *
841:
842: print header
843:
844: =item *
845:
846: evaluate actions from previous page (both cumulatively and chronologically)
847:
848: =item *
849:
850: output title
851:
852: =item *
853:
854: get state of file attributes to be showing
855:
856: =item *
857:
858: output state of file attributes to be showing
859:
860: =item *
861:
862: output starting row to the indexed file/directory hierarchy
863:
864: =item *
865:
866: read in what directories have previously been set to "open"
867:
868: =item *
869:
870: if not at top level, provide an uplink arrow
871:
872: =item *
873:
874: recursively go through all the directories and output as appropriate
875:
876: =item *
877:
878: information useful for group import
879:
880: =item *
881:
882: end the tables
883:
884: =item *
885:
886: end the output and return
887:
888: =back
889:
890: =head1 OTHER SUBROUTINES
891:
892: =over 4
893:
894: =item *
895:
896: scanDir - recursive scan of a directory
897:
898: =item *
899:
900: get_list - get complete matched list based on the uri (returns an array)
901:
902: =item *
903:
904: match_ext - filters out files based on extensions (returns an array)
905:
906: =item *
907:
908: display_line - displays one line in appropriate table format
909:
910: =item *
911:
912: begin_form - prints the beginning of a form for directory or file link
913:
914: =item *
915:
916: get_unprocessed_cgi - grab unprocessed CGI variables that may have been
917: appended to URL
918:
919: =item *
920:
921: start_fresh_session - settings whenever the user causes the indexer window
922: to be launched
923:
924: =back
925:
926: =cut
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