1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.24 2001/11/29 20:31:45 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: #
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::Constants qw(:common);
64: use Apache::File;
65: use GDBM_File;
66:
67: # ---------------------------------------- variables used throughout the module
68: my %hash; # tied to a user-specific gdbm file
69: my %dirs; # keys are directories, values are the open/close status
70: my %language; # has the reference information present in language.tab
71:
72: # ----- Values which are set by the handler subroutine and are accessible to
73: # ----- other methods.
74: my $extrafield; # default extra table cell
75: my $fnum; # file counter
76: my $dnum; # directory counter
77:
78: # ---------------------------------------------------------------------- BEGIN
79: sub BEGIN {
80: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
81: '/language.tab');
82: map {
83: $_=~/(\w+)\s+([\w\s\-]+)/;
84: $language{$1}=$2;
85: } <$fh>;
86: }
87:
88: # ----------------------------- Handling routine called via Apache and mod_perl
89: sub handler {
90: my $r = shift;
91: $r->content_type('text/html');
92: $r->send_http_header;
93: return OK if $r->header_only;
94: $fnum=0;
95: $dnum=0;
96: untie %hash;
97:
98: # ------------------------------------- read in machine configuration variables
99: my $iconpath= $r->dir_config('lonIconsURL') . "/";
100: my $domain = $r->dir_config('lonDefDomain');
101: my $role = $r->dir_config('lonRole');
102: my $loadlim = $r->dir_config('lonLoadLim');
103: my $servadm = $r->dir_config('lonAdmEMail');
104: my $sysadm = $r->dir_config('lonSysEMail');
105: my $lonhost = $r->dir_config('lonHostID');
106: my $tabdir = $r->dir_config('lonTabDir');
107:
108: my $fileclr='#ffffe6';
109: my $line;
110: my (@attrchk,@openpath);
111: my $uri=$r->uri;
112:
113: # -------------------------------------- see if called from an interactive mode
114: &get_unprocessed_cgi();
115:
116: my $closebutton='';
117: my $groupimportbutton='';
118: my $colspan='';
119:
120: $extrafield='';
121: my $diropendb =
122: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
123:
124: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
125: if ($ENV{'form.launch'} eq '1') {
126: &start_fresh_session();
127: }
128:
129: # -------------------- refresh environment with user database values (in %hash)
130: if ($hash{'mode_catalog'} eq 'interactive') {
131: $ENV{'form.catalogmode'}='interactive';
132: }
133: if ($hash{'mode_catalog'} eq 'groupimport') {
134: $ENV{'form.catalogmode'}='groupimport';
135: }
136:
137: # --------------------- define extra fields and buttons in case of special mode
138: if ($ENV{'form.catalogmode'} eq 'interactive') {
139: $hash{'mode_catalog'}='interactive';
140: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
141: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
142: ' border="0" /></td>';
143: $colspan=" colspan='2' ";
144: $closebutton=<<END;
145: <input type="button" name="close" value='CLOSE' onClick="self.close()">
146: END
147: }
148: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
149: $hash{'mode_catalog'}='groupimport';
150: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
151: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
152: ' border="0" /></td>';
153: $colspan=" colspan='2' ";
154: $closebutton=<<END;
155: <input type="button" name="close" value='CLOSE' onClick="self.close()">
156: END
157: $groupimportbutton=<<END;
158: <input type="button" name="groupimport" value='GROUP IMPORT'
159: onClick="javascript:select_group()">
160: END
161: }
162:
163: # ------ set catalogmodefunctions to have extra needed javascript functionality
164: my $catalogmodefunctions='';
165: if ($ENV{'form.catalogmode'} eq 'interactive' or
166: $ENV{'form.catalogmode'} eq 'groupimport') {
167: $catalogmodefunctions=<<END;
168: function select_data(title,url) {
169: changeTitle(title);
170: changeURL(url);
171: self.close();
172: }
173: function select_group() {
174: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value;
175: }
176: function changeTitle(val) {
177: if (opener.inf.document.forms.resinfo.elements.t) {
178: opener.inf.document.forms.resinfo.elements.t.value=val;
179: }
180: }
181: function changeURL(val) {
182: if (opener.inf.document.forms.resinfo.elements.u) {
183: opener.inf.document.forms.resinfo.elements.u.value=val;
184: }
185: }
186: END
187: }
188: if ($ENV{'form.catalogmode'} eq 'groupimport') {
189: $catalogmodefunctions.=<<END;
190: var acts='';
191: function queue(val) {
192: if (eval("document.forms."+val+".filelink.checked")) {
193: var l=val.length;
194: var v=val.substring(4,l);
195: document.forms.fileattr.acts.value+='1a'+v+'b';
196: }
197: else {
198: var l=val.length;
199: var v=val.substring(4,l);
200: document.forms.fileattr.acts.value+='0a'+v+'b';
201: }
202: }
203: function rep_dirpath(suffix,val) {
204: eval("document.forms.dirpath"+suffix+".acts.value=val");
205: }
206: END
207: }
208:
209: # ---------------------------------------------------------------- Print Header
210: $r->print(<<ENDHEADER);
211: <html>
212: <head>
213: <title>The LearningOnline Network With CAPA Directory Browser</title>
214:
215: <script type="text/javascript">
216: $catalogmodefunctions
217: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
218: var options = "width=" + w + ",height=" + h + ",";
219: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
220: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
221: var newWin = window.open(url, wdwName, options);
222: newWin.focus();
223: }
224: function gothere(val) {
225: window.location=val+'?acts='+document.forms.fileattr.acts.value;
226: }
227: </script>
228:
229: </head>
230: <body bgcolor="#FFFFFF">
231: ENDHEADER
232:
233: # - Evaluate actions from previous page (both cumulatively and chronologically)
234: if ($ENV{'form.catalogmode'} eq 'groupimport') {
235: my $acts=$ENV{'form.acts'};
236: my @Acts=split(/b/,$acts);
237: my %ahash;
238: my %achash;
239: my $ac=0;
240: # some initial hashes for working with data
241: map {
242: my ($state,$ref)=split(/a/);
243: $ahash{$ref}=$state;
244: $achash{$ref}=$ac;
245: $ac++;
246: } (@Acts);
247: # sorting through the actions and changing the tied database hash
248: map {
249: my $key=$_;
250: if ($ahash{$key} eq '1') {
251: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
252: $hash{'pre_'.$key.'_title'};
253: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
254: $hash{'storectr'}+0;
255: $hash{'storectr'}++;
256: }
257: if ($ahash{$key} eq '0') {
258: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
259: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
260: }
261: }
262: } sort {$achash{$a}<=>$achash{$b}} (keys %ahash);
263: # deleting the previously cached listing
264: map {
265: if ($_ =~ /^pre_/ && $_ =~/link$/) {
266: my $key = $_;
267: $key =~ s/^pre_//;
268: $key =~ s/_[^_]*$//;
269: delete $hash{'pre_'.$key.'_title'};
270: delete $hash{'pre_'.$key.'_link'};
271: }
272: } keys %hash;
273: }
274:
275: # ---------------------------------------------------------------- output title
276: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
277: 'Network Directory Browser</font></h2>'."\n");
278: # ---------------------------------- get state of file attributes to be showing
279: if ($ENV{'form.attrs'} ne "") {
280: for (my $i=0; $i<=6; $i++) {
281: delete $hash{'display_attrs_'.$i};
282: if ($ENV{'form.attr'.$i} == 1) {
283: $attrchk[$i] = "checked";
284: $hash{'display_attrs_'.$i} = 1;
285: }
286: }
287: } else {
288: for (my $i=0; $i<=6; $i++) {
289: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
290: }
291: }
292: # ------------------------------- output state of file attributes to be showing
293: $r->print(<<END);
294: <b><font color="#666666">Display file attributes</font></b><br />
295: <form method="post" name="fileattr" action="$uri"
296: enctype="application/x-www-form-urlencoded">
297: <table border=0><tr>
298: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
299: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
300: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
301: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
302: </tr><tr>
303: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
304: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
305: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
306: <td> </td>
307: </tr></table>
308: <input type="hidden" name="dirPointer" value="on" />
309: <input type="hidden" name="acts" value="" />
310: <input type="submit" name="attrs" value="Review" />
311: <input type="submit" name="attrs" value="Refresh" />
312: $closebutton
313: $groupimportbutton
314: </form>
315: END
316:
317: # ----------------- output starting row to the indexed file/directory hierarchy
318: my $titleclr="#ddffff";
319: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");
320: $r->print("<table border=0><tr>\n");
321: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
322: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
323: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
324: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
325: if ($hash{'display_attrs_1'} == 1);
326: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
327: if ($hash{'display_attrs_2'} == 1);
328: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
329: if ($hash{'display_attrs_3'} == 1);
330: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
331: if ($hash{'display_attrs_4'} == 1);
332: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
333: if ($hash{'display_attrs_5'} == 1);
334: $r->print("</tr>");
335:
336: # ----------------- read in what directories have previously been set to "open"
337: map {
338: if ($_ =~ /^diropen_status_/) {
339: my $key = $_;
340: $key =~ s/^diropen_status_//;
341: $dirs{$key} = $hash{$_};
342: }
343: } keys %hash;
344:
345: if ($ENV{'form.openuri'}) { # take care of review and refresh options
346: my $uri=$ENV{'form.openuri'};
347: if (exists($hash{'diropen_status_'.$uri})) {
348: my $cursta = $hash{'diropen_status_'.$uri};
349: $dirs{$uri} = 'open';
350: $hash{'diropen_status_'.$uri} = 'open';
351: if ($cursta eq 'open') {
352: $dirs{$uri} = 'closed';
353: $hash{'diropen_status_'.$uri} = 'closed';
354: }
355: } else {
356: $hash{'diropen_status_'.$uri} = 'open';
357: $dirs{$uri} = 'open';
358: }
359: }
360:
361: my $bredir = $ENV{'form.dirPointer'};
362: my $toplevel;
363: my $indent = 0;
364: $uri = $uri.'/' if $uri !~ /.*\/$/;
365:
366: if ($bredir ne "on") {
367: $hash{'top.level'} = $uri;
368: $toplevel = $uri;
369:
370: } else {
371: $toplevel = $hash{'top.level'};
372: }
373:
374: # -------------------------------- if not at top level, provide an uplink arrow
375: if ($toplevel ne "/res/"){
376: my (@uri_com) = split(/\//,$uri);
377: pop @uri_com;
378: my $upone = join('/',@uri_com);
379: my @list = qw (0);
380: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
381: $indent = 1;
382: }
383:
384: # -------- recursively go through all the directories and output as appropriate
385: &scanDir ($r,$toplevel,$indent,\%hash);
386:
387: # ---------------------------- embed hidden information useful for group import
388: $r->print("<form name='fnum'>");
389: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
390:
391: # -------------------------------------------------------------- end the tables
392: $r->print("</table>");
393: $r->print("</td></tr></table>");
394:
395: # --------------------------------------------------- end the output and return
396: $r->print("</body></html>\n");
397: untie(%hash);
398: } else {
399: $r->print('<html><head></head><body>Unable to tie hash to db '.
400: 'file</body></html>');
401: return OK;
402: }
403: return OK;
404: }
405:
406: # ----------------------------------------------- recursive scan of a directory
407: sub scanDir {
408: my ($r,$startdir,$indent,$hashref)=@_;
409: my ($compuri,$curdir);
410: my $dirptr=16384;
411: $indent++;
412:
413: my %dupdirs = %dirs;
414: my @list=&get_list($r,$startdir);
415: foreach my $line (@list) {
416: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
417: next if $strip =~ /.*\.meta$/;
418: my (@fileparts) = split(/\./,$strip);
419: if ($hash{'display_attrs_6'} != 1) {
420: if (scalar(@fileparts) >= 3) {
421: my $fext = pop @fileparts;
422: my $ov = pop @fileparts;
423: my $fname = join ('.',@fileparts,$fext);
424: next if (grep /$fname/,@list and $ov =~ /\d+/);
425: }
426: }
427:
428: if ($dom eq "domain") {
429: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
430: $curdir = $compuri;
431: } else {
432: # user, dir & file have name only, i.e., w/o path
433: $compuri = join('',$startdir,$strip,"/");
434: $curdir = $startdir;
435: }
436: my $diropen = "closed";
437: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
438: while (my ($key,$val)= each %dupdirs) {
439: if ($key eq $compuri and $val eq "open") {
440: $diropen = "opened";
441: delete $dupdirs{key},$dirs{$key};
442: }
443: }
444: }
445: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
446: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
447: }
448: $indent--;
449: }
450:
451: # --------------- get complete matched list based on the uri (returns an array)
452: sub get_list {
453: my ($r,$uri)=@_;
454: my @list;
455: my $luri = $uri;
456: $luri =~ s/\//_/g;
457:
458: if ($ENV{'form.attrs'} eq "Refresh") {
459: map {
460: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
461: } keys %hash;
462: }
463:
464: if ($hash{'dirlist_files'.$luri}) {
465: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
466: } else {
467: @list = &Apache::lonnet::dirlist($uri);
468: $hash{'dirlist_files_'.$luri} = join('\n',@list);
469: }
470: return @list=&match_ext($r,@list);
471: }
472:
473: # -------------------- filters out files based on extensions (returns an array)
474: sub match_ext {
475: my ($r,@packlist)=@_;
476: my @trimlist;
477: my $nextline;
478: my @fileext;
479: my $dirptr=16384;
480:
481: my $tabdir = $r->dir_config('lonTabDir');
482: my $fn = $tabdir.'/filetypes.tab';
483: if (-e $fn) {
484: my $FH=Apache::File->new($fn);
485: my @content=<$FH>;
486: foreach my $line (@content) {
487: (my $ext,my $foo) = split /\s+/,$line;
488: push @fileext,$ext;
489: }
490: }
491: foreach my $line (@packlist) {
492: chomp $line;
493: $line =~ s/^\/home\/httpd\/html//;
494: my @unpackline = split (/\&/,$line);
495: next if ($unpackline[0] eq ".");
496: next if ($unpackline[0] eq "..");
497: my @filecom = split (/\./,$unpackline[0]);
498: my $fext = pop(@filecom);
499: my $fnptr = $unpackline[3]&$dirptr;
500: if ($fnptr == 0 and $unpackline[3] ne "") {
501: foreach my $nextline (@fileext) {
502: push @trimlist,$line if $nextline eq $fext;
503: }
504: } else {
505: push @trimlist,$line;
506: }
507: }
508: @trimlist = sort (@trimlist);
509: return @trimlist;
510: }
511:
512: # ------------------------------- displays one line in appropriate table format
513: sub display_line {
514: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
515: my (@pathfn, $fndir, $fnptr);
516: my $dirptr=16384;
517: my $fileclr="#ffffe6";
518: my $iconpath= $r->dir_config('lonIconsURL') . "/";
519:
520: my @filecom = split (/\&/,$line);
521: my @pathcom = split (/\//,$filecom[0]);
522: my $listname = $pathcom[scalar(@pathcom)-1];
523: my $fnptr = $filecom[3]&$dirptr;
524: my $msg = 'View '.$filecom[0].' resources';
525: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
526:
527: my $tabtag="</td>";
528: my $i=0;
529:
530: while ($i<=5) {
531: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
532: if $hash{'display_attrs_'.$i} == 1;
533: $i++;
534: }
535:
536: # display uplink arrow
537: if ($filecom[1] eq "viewOneUp") {
538: $r->print("<tr>$extrafield");
539: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
540: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
541: '/" '.
542: 'onSubmit="return rep_dirpath(\'UP\','.
543: 'document.forms.fileattr.acts.value)" '.
544: 'enctype="application/x-www-form-urlencoded"'.
545: '>'."\n");
546: $r->print ('<input type=hidden name=openuri value="'.
547: $startdir.'">'."\n");
548: $r->print ('<input type="hidden" name="acts" value="">'."\n");
549: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
550: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
551: "\n");
552: $r->print("Up $tabtag</tr></form>\n");
553: return OK;
554: }
555:
556: # display domain
557: if ($filecom[1] eq "domain") {
558: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
559: if ($ENV{'form.dirPointer'} eq "on");
560: $r->print("<tr>$extrafield");
561: $r->print("<td bgcolor=$fileclr valign=bottom>");
562: &begin_form ($r,$filecom[0].'/');
563: my $anchor = $filecom[0].'/';
564: $anchor =~ s/\///g;
565: $r->print ('<a name="'.$anchor.'">');
566: $r->print ('<input type="hidden" name="acts" value="">');
567: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
568: $diropen.'.gif"');
569: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
570: "\n");
571: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
572: '/\')"><img src="'.$iconpath.'server.gif"');
573: $r->print (' border="0" /></a>'."\n");
574: $r->print("Domain - $listname $tabtag</tr></form>\n");
575: return OK;
576:
577: # display user directory
578: }
579: if ($filecom[1] eq "user") {
580: $r->print("<tr>$extrafield");
581: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
582: my $curdir = $startdir.$filecom[0].'/';
583: my $anchor = $curdir;
584: $anchor =~ s/\///g;
585: &begin_form ($r,$curdir);
586: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
587: 'whitespace1.gif" border="0" />'."\n");
588: $r->print ('<input type="hidden" name="acts" value="">');
589: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
590: '.gif"');
591: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
592: "\n");
593: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
594: $iconpath.'quill.gif border="0" name="'.$msg.
595: '" height="22" /></a>');
596: $r->print ($listname.$tabtag.'</tr></form>'."\n");
597: return OK;
598: }
599:
600: # display file
601: if ($fnptr == 0 and $filecom[3] ne "") {
602: my @file_ext = split (/\./,$listname);
603: my $curfext = $file_ext[scalar(@file_ext)-1];
604: my $filelink = $startdir.$filecom[0];
605: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
606: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
607: my $title;
608: if ($ENV{'form.catalogmode'} eq 'interactive') {
609: $title=$listname;
610: $title = &Apache::lonnet::metadata($filelink,'title')
611: if ($metafile == 1);
612: $title=$listname unless $title;
613: $r->print("<a href='javascript:select_data(\"",
614: $title,'","',$filelink,"\")'>");
615: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
616: "\n");
617: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
618: }
619: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
620: $title=$listname;
621: $title = &Apache::lonnet::metadata($filelink,'title')
622: if ($metafile == 1);
623: $title=$listname unless $title;
624: $r->print("<form name='form$fnum'>\n");
625: $r->print("<input type='checkbox' name='filelink"."' ".
626: "value='$filelink' onClick='".
627: "javascript:queue(\"form$fnum\")' ");
628: if ($hash{'store_'.$filelink}) {
629: $r->print("checked");
630: }
631: $r->print(">\n");
632: $r->print("<input type='hidden' name='title"."' ".
633: "value='$title'>\n");
634: $r->print("</form>\n");
635: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
636: $hash{"pre_${fnum}_link"}=$filelink;
637: $hash{"pre_${fnum}_title"}=$title;
638: $fnum++;
639: }
640:
641: if ($indent > 0 and $indent < 11) {
642: $r->print("<img src=",$iconpath,"whitespace",$indent,
643: ".gif border='0' />\n");
644: } elsif ($indent >0) {
645: my $ten = int($indent/10.);
646: my $rem = $indent%10.0;
647: my $count = 0;
648: while ($count < $ten) {
649: $r->print("<img src=",$iconpath,
650: "whitespace10.gif border='0' />\n");
651: $count++;
652: }
653: $r->print("<img src=",$iconpath,"whitespace",$rem,
654: ".gif border='0' />\n") if $rem > 0;
655: }
656:
657: $r->print("<img src=$iconpath$curfext.gif border='0' />\n");
658: $r->print (" <a href=\"javascript:openWindow('".$filelink.
659: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
660: " TARGET=_self>$listname</a> ");
661:
662: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
663: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
664: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
665:
666: $r->print("</td>\n");
667: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
668: $filecom[8]," </td>\n")
669: if $hash{'display_attrs_0'} == 1;
670: $r->print("<td bgcolor=$fileclr valign=bottom> ".
671: (localtime($filecom[9]))." </td>\n")
672: if $hash{'display_attrs_1'} == 1;
673: $r->print("<td bgcolor=$fileclr valign=bottom> ".
674: (localtime($filecom[10]))." </td>\n")
675: if $hash{'display_attrs_2'} == 1;
676:
677: if ($hash{'display_attrs_3'} == 1) {
678: my $author = &Apache::lonnet::metadata($filelink,'author')
679: if ($metafile == 1);
680: $author = ' ' if (!$author);
681: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
682: " </td>\n");
683: }
684: if ($hash{'display_attrs_4'} == 1) {
685: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
686: if ($metafile == 1);
687: $keywords = ' ' if (!$keywords);
688: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
689: " </td>\n");
690: }
691: if ($hash{'display_attrs_5'} == 1) {
692: my $lang = &Apache::lonnet::metadata($filelink,'language')
693: if ($metafile == 1);
694: $lang = $language{$lang};
695: $lang = ' ' if (!$lang);
696: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
697: " </td>\n");
698: }
699: $r->print("</tr>\n");
700: }
701:
702: # -- display directory
703: if ($fnptr == $dirptr) {
704: my @file_ext = split (/\./,$listname);
705: my $curfext = $file_ext[scalar(@file_ext)-1];
706: my $curdir = $startdir.$filecom[0].'/';
707: my $anchor = $curdir;
708: $anchor =~ s/\///g;
709: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
710: &begin_form ($r,$curdir);
711: my $indentm1 = $indent-1;
712: if ($indentm1 < 11 and $indentm1 > 0) {
713: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
714: ".gif border='0' />\n");
715: } else {
716: my $ten = int($indentm1/10.);
717: my $rem = $indentm1%10.0;
718: my $count = 0;
719: while ($count < $ten) {
720: $r->print ("<img src=",$iconpath
721: ,"whitespace10.gif border='0' />\n");
722: $count++;
723: }
724: $r->print ("<img src=",$iconpath,"whitespace",$rem,
725: ".gif border='0' />\n") if $rem > 0;
726: }
727: $r->print ('<input type="hidden" name="acts" value="">');
728: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
729: 'folder_pointer_'.$diropen.'.gif"');
730: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
731: "\n");
732: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
733: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
734: "\n");
735: $r->print ("$listname$tabtag</tr></form>\n");
736: }
737:
738: }
739:
740: # ------------------- prints the beginning of a form for directory or file link
741: sub begin_form {
742: my ($r,$uri) = @_;
743: my $anchor = $uri;
744: $anchor =~ s/\///g;
745: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
746: '#'.$anchor.
747: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
748: ',document.forms.fileattr.acts.value)" '.
749: 'enctype="application/x-www-form-urlencoded">'."\n");
750: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
751: "\n");
752: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
753: $dnum++;
754: }
755:
756: # ----------- grab unprocessed CGI variables that may have been appended to URL
757: sub get_unprocessed_cgi {
758: map {
759: my ($name, $value) = split(/=/,$_);
760: $value =~ tr/+/ /;
761: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
762: if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') {
763: $ENV{'form.'.$name}=$value;
764: }
765: } (split(/&/,$ENV{'QUERY_STRING'}));
766: }
767:
768: # --------- settings whenever the user causes the indexer window to be launched
769: sub start_fresh_session {
770: delete $hash{'mode_catalog'};
771: map {
772: if ($_ =~ /^pre_/) {
773: delete $hash{$_};
774: }
775: if ($_ =~ /^store/) {
776: delete $hash{$_};
777: }
778: } keys %hash;
779: }
780:
781: 1;
782:
783: =head1 NAME
784:
785: Apache::lonindexer - mod_perl module for cross server filesystem browsing
786:
787: =head1 SYNOPSIS
788:
789: Invoked by /etc/httpd/conf/srm.conf:
790:
791: <LocationMatch "^/res.*/$">
792: SetHandler perl-script
793: PerlHandler Apache::lonindexer
794: </LocationMatch>
795:
796: =head1 INTRODUCTION
797:
798: This module enables a scheme of browsing across a cross server.
799:
800: This is part of the LearningOnline Network with CAPA project
801: described at http://www.lon-capa.org.
802:
803: =head1 BEGIN SUBROUTINE
804:
805: This routine is only run once after compilation.
806:
807: =over 4
808:
809: =item *
810:
811: Initializes %language hash table.
812:
813: =back
814:
815: =head1 HANDLER SUBROUTINE
816:
817: This routine is called by Apache and mod_perl.
818:
819: =over 4
820:
821: =item *
822:
823: read in machine configuration variables
824:
825: =item *
826:
827: see if called from an interactive mode
828:
829: =item *
830:
831: refresh environment with user database values (in %hash)
832:
833: =item *
834:
835: define extra fields and buttons in case of special mode
836:
837: =item *
838:
839: set catalogmodefunctions to have extra needed javascript functionality
840:
841: =item *
842:
843: print header
844:
845: =item *
846:
847: evaluate actions from previous page (both cumulatively and chronologically)
848:
849: =item *
850:
851: output title
852:
853: =item *
854:
855: get state of file attributes to be showing
856:
857: =item *
858:
859: output state of file attributes to be showing
860:
861: =item *
862:
863: output starting row to the indexed file/directory hierarchy
864:
865: =item *
866:
867: read in what directories have previously been set to "open"
868:
869: =item *
870:
871: if not at top level, provide an uplink arrow
872:
873: =item *
874:
875: recursively go through all the directories and output as appropriate
876:
877: =item *
878:
879: information useful for group import
880:
881: =item *
882:
883: end the tables
884:
885: =item *
886:
887: end the output and return
888:
889: =back
890:
891: =head1 OTHER SUBROUTINES
892:
893: =over 4
894:
895: =item *
896:
897: scanDir - recursive scan of a directory
898:
899: =item *
900:
901: get_list - get complete matched list based on the uri (returns an array)
902:
903: =item *
904:
905: match_ext - filters out files based on extensions (returns an array)
906:
907: =item *
908:
909: display_line - displays one line in appropriate table format
910:
911: =item *
912:
913: begin_form - prints the beginning of a form for directory or file link
914:
915: =item *
916:
917: get_unprocessed_cgi - grab unprocessed CGI variables that may have been
918: appended to URL
919:
920: =item *
921:
922: start_fresh_session - settings whenever the user causes the indexer window
923: to be launched
924:
925: =back
926:
927: =cut
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