1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.27 2001/12/11 03:50:09 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: #
44: ###
45:
46: ###############################################################################
47: ## ##
48: ## ORGANIZATION OF THIS PERL MODULE ##
49: ## ##
50: ## 1. Description of functions ##
51: ## 2. Modules used by this module ##
52: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
53: ## 4. BEGIN block (to be run once after compilation) ##
54: ## 5. Handling routine called via Apache and mod_perl ##
55: ## 6. Other subroutines ##
56: ## ##
57: ###############################################################################
58:
59: package Apache::lonindexer;
60:
61: # ------------------------------------------------- modules used by this module
62: use strict;
63: use Apache::lonnet();
64: use Apache::Constants qw(:common);
65: use Apache::File;
66: use GDBM_File;
67:
68: # ---------------------------------------- variables used throughout the module
69: my %hash; # tied to a user-specific gdbm file
70: my %dirs; # keys are directories, values are the open/close status
71: my %language; # has the reference information present in language.tab
72:
73: # ----- Values which are set by the handler subroutine and are accessible to
74: # ----- other methods.
75: my $extrafield; # default extra table cell
76: my $fnum; # file counter
77: my $dnum; # directory counter
78:
79: # ---------------------------------------------------------------------- BEGIN
80: sub BEGIN {
81: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
82: '/language.tab');
83: while(<$fh>) {
84: $_=~/(\w+)\s+([\w\s\-]+)/;
85: $language{$1}=$2;
86: }
87: }
88:
89: # ----------------------------- Handling routine called via Apache and mod_perl
90: sub handler {
91: my $r = shift;
92: $r->content_type('text/html');
93: $r->send_http_header;
94: return OK if $r->header_only;
95: $fnum=0;
96: $dnum=0;
97: untie %hash;
98:
99: # ------------------------------------- read in machine configuration variables
100: my $iconpath= $r->dir_config('lonIconsURL') . "/";
101: my $domain = $r->dir_config('lonDefDomain');
102: my $role = $r->dir_config('lonRole');
103: my $loadlim = $r->dir_config('lonLoadLim');
104: my $servadm = $r->dir_config('lonAdmEMail');
105: my $sysadm = $r->dir_config('lonSysEMail');
106: my $lonhost = $r->dir_config('lonHostID');
107: my $tabdir = $r->dir_config('lonTabDir');
108:
109: my $fileclr='#ffffe6';
110: my $line;
111: my (@attrchk,@openpath);
112: my $uri=$r->uri;
113:
114: # -------------------------------------- see if called from an interactive mode
115: &get_unprocessed_cgi();
116:
117: my $closebutton='';
118: my $groupimportbutton='';
119: my $colspan='';
120:
121: $extrafield='';
122: my $diropendb =
123: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
124:
125: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
126: if ($ENV{'form.launch'} eq '1') {
127: &start_fresh_session();
128: }
129:
130: # -------------------- refresh environment with user database values (in %hash)
131: if ($hash{'mode_catalog'} eq 'interactive') {
132: $ENV{'form.catalogmode'}='interactive';
133: }
134: if ($hash{'mode_catalog'} eq 'groupimport') {
135: $ENV{'form.catalogmode'}='groupimport';
136: }
137:
138: # --------------------- define extra fields and buttons in case of special mode
139: if ($ENV{'form.catalogmode'} eq 'interactive') {
140: $hash{'mode_catalog'}='interactive';
141: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
142: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
143: ' border="0" /></td>';
144: $colspan=" colspan='2' ";
145: $closebutton=<<END;
146: <input type="button" name="close" value='CLOSE' onClick="self.close()">
147: END
148: }
149: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
150: $hash{'mode_catalog'}='groupimport';
151: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
152: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
153: ' border="0" /></td>';
154: $colspan=" colspan='2' ";
155: $closebutton=<<END;
156: <input type="button" name="close" value='CLOSE' onClick="self.close()">
157: END
158: $groupimportbutton=<<END;
159: <input type="button" name="groupimport" value='GROUP IMPORT'
160: onClick="javascript:select_group()">
161: END
162: }
163:
164: # ------ set catalogmodefunctions to have extra needed javascript functionality
165: my $catalogmodefunctions='';
166: if ($ENV{'form.catalogmode'} eq 'interactive' or
167: $ENV{'form.catalogmode'} eq 'groupimport') {
168: $catalogmodefunctions=<<END;
169: function select_data(title,url) {
170: changeTitle(title);
171: changeURL(url);
172: self.close();
173: }
174: function select_group() {
175: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value;
176: }
177: function changeTitle(val) {
178: if (opener.inf.document.forms.resinfo.elements.t) {
179: opener.inf.document.forms.resinfo.elements.t.value=val;
180: }
181: }
182: function changeURL(val) {
183: if (opener.inf.document.forms.resinfo.elements.u) {
184: opener.inf.document.forms.resinfo.elements.u.value=val;
185: }
186: }
187: END
188: }
189: if ($ENV{'form.catalogmode'} eq 'groupimport') {
190: $catalogmodefunctions.=<<END;
191: var acts='';
192: function queue(val) {
193: if (eval("document.forms."+val+".filelink.checked")) {
194: var l=val.length;
195: var v=val.substring(4,l);
196: document.forms.fileattr.acts.value+='1a'+v+'b';
197: }
198: else {
199: var l=val.length;
200: var v=val.substring(4,l);
201: document.forms.fileattr.acts.value+='0a'+v+'b';
202: }
203: }
204: function rep_dirpath(suffix,val) {
205: eval("document.forms.dirpath"+suffix+".acts.value=val");
206: }
207: END
208: }
209:
210: # ---------------------------------------------------------------- Print Header
211: $r->print(<<ENDHEADER);
212: <html>
213: <head>
214: <title>The LearningOnline Network With CAPA Directory Browser</title>
215:
216: <script type="text/javascript">
217: $catalogmodefunctions
218: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
219: var options = "width=" + w + ",height=" + h + ",";
220: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
221: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
222: var newWin = window.open(url, wdwName, options);
223: newWin.focus();
224: }
225: function gothere(val) {
226: window.location=val+'?acts='+document.forms.fileattr.acts.value;
227: }
228: </script>
229:
230: </head>
231: <body bgcolor="#FFFFFF">
232: ENDHEADER
233:
234: # - Evaluate actions from previous page (both cumulatively and chronologically)
235: if ($ENV{'form.catalogmode'} eq 'groupimport') {
236: my $acts=$ENV{'form.acts'};
237: my @Acts=split(/b/,$acts);
238: my %ahash;
239: my %achash;
240: my $ac=0;
241: # some initial hashes for working with data
242: foreach (@Acts) {
243: my ($state,$ref)=split(/a/);
244: $ahash{$ref}=$state;
245: $achash{$ref}=$ac;
246: $ac++;
247: }
248: # sorting through the actions and changing the tied database hash
249: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
250: my $key=$_;
251: if ($ahash{$key} eq '1') {
252: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
253: $hash{'pre_'.$key.'_title'};
254: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
255: $hash{'storectr'}+0;
256: $hash{'storectr'}++;
257: }
258: if ($ahash{$key} eq '0') {
259: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
260: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
261: }
262: }
263: }
264: # deleting the previously cached listing
265: foreach (keys %hash) {
266: if ($_ =~ /^pre_/ && $_ =~/link$/) {
267: my $key = $_;
268: $key =~ s/^pre_//;
269: $key =~ s/_[^_]*$//;
270: delete $hash{'pre_'.$key.'_title'};
271: delete $hash{'pre_'.$key.'_link'};
272: }
273: }
274: }
275:
276: # ---------------------------------------------------------------- output title
277: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
278: 'Network Directory Browser</font></h2>'."\n");
279: # ---------------------------------- get state of file attributes to be showing
280: if ($ENV{'form.attrs'} ne "") {
281: for (my $i=0; $i<=6; $i++) {
282: delete $hash{'display_attrs_'.$i};
283: if ($ENV{'form.attr'.$i} == 1) {
284: $attrchk[$i] = "checked";
285: $hash{'display_attrs_'.$i} = 1;
286: }
287: }
288: } else {
289: for (my $i=0; $i<=6; $i++) {
290: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
291: }
292: }
293: # ------------------------------- output state of file attributes to be showing
294: $r->print(<<END);
295: <b><font color="#666666">Display file attributes</font></b><br />
296: <form method="post" name="fileattr" action="$uri"
297: enctype="application/x-www-form-urlencoded">
298: <table border=0><tr>
299: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
300: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
301: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
302: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
303: </tr><tr>
304: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
305: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
306: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
307: <td> </td>
308: </tr></table>
309: <input type="hidden" name="dirPointer" value="on" />
310: <input type="hidden" name="acts" value="" />
311: <input type="submit" name="attrs" value="Review" />
312: <input type="submit" name="attrs" value="Refresh" />
313: $closebutton
314: $groupimportbutton
315: </form>
316: END
317:
318: # ----------------- output starting row to the indexed file/directory hierarchy
319: my $titleclr="#ddffff";
320: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");
321: $r->print("<table border=0><tr>\n");
322: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
323: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
324: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
325: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
326: if ($hash{'display_attrs_1'} == 1);
327: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
328: if ($hash{'display_attrs_2'} == 1);
329: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
330: if ($hash{'display_attrs_3'} == 1);
331: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
332: if ($hash{'display_attrs_4'} == 1);
333: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
334: if ($hash{'display_attrs_5'} == 1);
335: $r->print("</tr>");
336:
337: # ----------------- read in what directories have previously been set to "open"
338: foreach (keys %hash) {
339: if ($_ =~ /^diropen_status_/) {
340: my $key = $_;
341: $key =~ s/^diropen_status_//;
342: $dirs{$key} = $hash{$_};
343: }
344: }
345:
346: if ($ENV{'form.openuri'}) { # take care of review and refresh options
347: my $uri=$ENV{'form.openuri'};
348: if (exists($hash{'diropen_status_'.$uri})) {
349: my $cursta = $hash{'diropen_status_'.$uri};
350: $dirs{$uri} = 'open';
351: $hash{'diropen_status_'.$uri} = 'open';
352: if ($cursta eq 'open') {
353: $dirs{$uri} = 'closed';
354: $hash{'diropen_status_'.$uri} = 'closed';
355: }
356: } else {
357: $hash{'diropen_status_'.$uri} = 'open';
358: $dirs{$uri} = 'open';
359: }
360: }
361:
362: my $bredir = $ENV{'form.dirPointer'};
363: my $toplevel;
364: my $indent = 0;
365: $uri = $uri.'/' if $uri !~ /.*\/$/;
366:
367: if ($bredir ne "on") {
368: $hash{'top.level'} = $uri;
369: $toplevel = $uri;
370:
371: } else {
372: $toplevel = $hash{'top.level'};
373: }
374:
375: # -------------------------------- if not at top level, provide an uplink arrow
376: if ($toplevel ne "/res/"){
377: my (@uri_com) = split(/\//,$uri);
378: pop @uri_com;
379: my $upone = join('/',@uri_com);
380: my @list = qw (0);
381: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
382: $indent = 1;
383: }
384:
385: # -------- recursively go through all the directories and output as appropriate
386: &scanDir ($r,$toplevel,$indent,\%hash);
387:
388: # ---------------------------- embed hidden information useful for group import
389: $r->print("<form name='fnum'>");
390: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
391:
392: # -------------------------------------------------------------- end the tables
393: $r->print("</table>");
394: $r->print("</td></tr></table>");
395:
396: # --------------------------------------------------- end the output and return
397: $r->print("</body></html>\n");
398: untie(%hash);
399: } else {
400: $r->print('<html><head></head><body>Unable to tie hash to db '.
401: 'file</body></html>');
402: return OK;
403: }
404: return OK;
405: }
406:
407: # ----------------------------------------------- recursive scan of a directory
408: sub scanDir {
409: my ($r,$startdir,$indent,$hashref)=@_;
410: my ($compuri,$curdir);
411: my $dirptr=16384;
412: $indent++;
413:
414: my %dupdirs = %dirs;
415: my @list=&get_list($r,$startdir);
416: foreach my $line (@list) {
417: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
418: next if $strip =~ /.*\.meta$/;
419: my (@fileparts) = split(/\./,$strip);
420: if ($hash{'display_attrs_6'} != 1) {
421: if (scalar(@fileparts) >= 3) {
422: my $fext = pop @fileparts;
423: my $ov = pop @fileparts;
424: my $fname = join ('.',@fileparts,$fext);
425: next if (grep /$fname/,@list and $ov =~ /\d+/);
426: }
427: }
428:
429: if ($dom eq "domain") {
430: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
431: $curdir = $compuri;
432: } else {
433: # user, dir & file have name only, i.e., w/o path
434: $compuri = join('',$startdir,$strip,"/");
435: $curdir = $startdir;
436: }
437: my $diropen = "closed";
438: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
439: while (my ($key,$val)= each %dupdirs) {
440: if ($key eq $compuri and $val eq "open") {
441: $diropen = "opened";
442: delete $dupdirs{key},$dirs{$key};
443: }
444: }
445: }
446: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
447: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
448: }
449: $indent--;
450: }
451:
452: # --------------- get complete matched list based on the uri (returns an array)
453: sub get_list {
454: my ($r,$uri)=@_;
455: my @list;
456: my $luri = $uri;
457: $luri =~ s/\//_/g;
458:
459: if ($ENV{'form.attrs'} eq "Refresh") {
460: foreach (keys %hash) {
461: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
462: }
463: }
464:
465: if ($hash{'dirlist_files'.$luri}) {
466: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
467: } else {
468: @list = &Apache::lonnet::dirlist($uri);
469: $hash{'dirlist_files_'.$luri} = join('\n',@list);
470: }
471: return @list=&match_ext($r,@list);
472: }
473:
474: # -------------------- filters out files based on extensions (returns an array)
475: sub match_ext {
476: my ($r,@packlist)=@_;
477: my @trimlist;
478: my $nextline;
479: my @fileext;
480: my $dirptr=16384;
481:
482: foreach my $line (@packlist) {
483: chomp $line;
484: $line =~ s/^\/home\/httpd\/html//;
485: my @unpackline = split (/\&/,$line);
486: next if ($unpackline[0] eq ".");
487: next if ($unpackline[0] eq "..");
488: my @filecom = split (/\./,$unpackline[0]);
489: my $fext = pop(@filecom);
490: my $fnptr = $unpackline[3]&$dirptr;
491: if ($fnptr == 0 and $unpackline[3] ne "") {
492: my $embstyle = &Apache::lonnet::fileembstyle($fext);
493: push @trimlist,$line if (defined($embstyle) &&
494: $embstyle ne 'hdn' );
495: } else {
496: push @trimlist,$line;
497: }
498: }
499: @trimlist = sort (@trimlist);
500: return @trimlist;
501: }
502:
503: # ------------------------------- displays one line in appropriate table format
504: sub display_line {
505: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
506: my (@pathfn, $fndir, $fnptr);
507: my $dirptr=16384;
508: my $fileclr="#ffffe6";
509: my $iconpath= $r->dir_config('lonIconsURL') . "/";
510:
511: my @filecom = split (/\&/,$line);
512: my @pathcom = split (/\//,$filecom[0]);
513: my $listname = $pathcom[scalar(@pathcom)-1];
514: my $fnptr = $filecom[3]&$dirptr;
515: my $msg = 'View '.$filecom[0].' resources';
516: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
517:
518: my $tabtag="</td>";
519: my $i=0;
520:
521: while ($i<=5) {
522: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
523: if $hash{'display_attrs_'.$i} == 1;
524: $i++;
525: }
526:
527: # display uplink arrow
528: if ($filecom[1] eq "viewOneUp") {
529: $r->print("<tr>$extrafield");
530: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
531: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
532: '/" '.
533: 'onSubmit="return rep_dirpath(\'UP\','.
534: 'document.forms.fileattr.acts.value)" '.
535: 'enctype="application/x-www-form-urlencoded"'.
536: '>'."\n");
537: $r->print ('<input type=hidden name=openuri value="'.
538: $startdir.'">'."\n");
539: $r->print ('<input type="hidden" name="acts" value="">'."\n");
540: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
541: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
542: "\n");
543: $r->print("Up $tabtag</tr></form>\n");
544: return OK;
545: }
546:
547: # display domain
548: if ($filecom[1] eq "domain") {
549: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
550: if ($ENV{'form.dirPointer'} eq "on");
551: $r->print("<tr>$extrafield");
552: $r->print("<td bgcolor=$fileclr valign=bottom>");
553: &begin_form ($r,$filecom[0].'/');
554: my $anchor = $filecom[0].'/';
555: $anchor =~ s/\///g;
556: $r->print ('<a name="'.$anchor.'">');
557: $r->print ('<input type="hidden" name="acts" value="">');
558: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
559: $diropen.'.gif"');
560: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
561: "\n");
562: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
563: '/\')"><img src="'.$iconpath.'server.gif"');
564: $r->print (' border="0" /></a>'."\n");
565: $r->print("Domain - $listname $tabtag</tr></form>\n");
566: return OK;
567:
568: # display user directory
569: }
570: if ($filecom[1] eq "user") {
571: $r->print("<tr>$extrafield");
572: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
573: my $curdir = $startdir.$filecom[0].'/';
574: my $anchor = $curdir;
575: $anchor =~ s/\///g;
576: &begin_form ($r,$curdir);
577: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
578: 'whitespace1.gif" border="0" />'."\n");
579: $r->print ('<input type="hidden" name="acts" value="">');
580: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
581: '.gif"');
582: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
583: "\n");
584: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
585: $iconpath.'quill.gif border="0" name="'.$msg.
586: '" height="22" /></a>');
587: $r->print ($listname.$tabtag.'</tr></form>'."\n");
588: return OK;
589: }
590:
591: # display file
592: if ($fnptr == 0 and $filecom[3] ne "") {
593: my @file_ext = split (/\./,$listname);
594: my $curfext = $file_ext[-1];
595: # Set the icon for the file
596: my $iconname = "unknown.gif";
597: my $embstyle = &Apache::lonnet::fileembstyle($curfext);
598: # The unless conditional that follows is a bit of overkill
599: $iconname = $curfext.".gif" unless
600: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
601: #
602: my $filelink = $startdir.$filecom[0];
603: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
604: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
605: my $title;
606: if ($ENV{'form.catalogmode'} eq 'interactive') {
607: $title=$listname;
608: $title = &Apache::lonnet::metadata($filelink,'title')
609: if ($metafile == 1);
610: $title=$listname unless $title;
611: $r->print("<a href='javascript:select_data(\"",
612: $title,'","',$filelink,"\")'>");
613: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
614: "\n");
615: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
616: }
617: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
618: $title=$listname;
619: $title = &Apache::lonnet::metadata($filelink,'title')
620: if ($metafile == 1);
621: $title=$listname unless $title;
622: $r->print("<form name='form$fnum'>\n");
623: $r->print("<input type='checkbox' name='filelink"."' ".
624: "value='$filelink' onClick='".
625: "javascript:queue(\"form$fnum\")' ");
626: if ($hash{'store_'.$filelink}) {
627: $r->print("checked");
628: }
629: $r->print(">\n");
630: $r->print("<input type='hidden' name='title"."' ".
631: "value='$title'>\n");
632: $r->print("</form>\n");
633: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
634: $hash{"pre_${fnum}_link"}=$filelink;
635: $hash{"pre_${fnum}_title"}=$title;
636: $fnum++;
637: }
638:
639: if ($indent > 0 and $indent < 11) {
640: $r->print("<img src=",$iconpath,"whitespace",$indent,
641: ".gif border='0' />\n");
642: } elsif ($indent >0) {
643: my $ten = int($indent/10.);
644: my $rem = $indent%10.0;
645: my $count = 0;
646: while ($count < $ten) {
647: $r->print("<img src=",$iconpath,
648: "whitespace10.gif border='0' />\n");
649: $count++;
650: }
651: $r->print("<img src=",$iconpath,"whitespace",$rem,
652: ".gif border='0' />\n") if $rem > 0;
653: }
654:
655: $r->print("<img src=$iconpath$iconname border='0' />\n");
656: $r->print (" <a href=\"javascript:openWindow('".$filelink.
657: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
658: " TARGET=_self>$listname</a> ");
659:
660: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
661: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
662: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
663:
664: $r->print("</td>\n");
665: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
666: $filecom[8]," </td>\n")
667: if $hash{'display_attrs_0'} == 1;
668: $r->print("<td bgcolor=$fileclr valign=bottom> ".
669: (localtime($filecom[9]))." </td>\n")
670: if $hash{'display_attrs_1'} == 1;
671: $r->print("<td bgcolor=$fileclr valign=bottom> ".
672: (localtime($filecom[10]))." </td>\n")
673: if $hash{'display_attrs_2'} == 1;
674:
675: if ($hash{'display_attrs_3'} == 1) {
676: my $author = &Apache::lonnet::metadata($filelink,'author')
677: if ($metafile == 1);
678: $author = ' ' if (!$author);
679: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
680: " </td>\n");
681: }
682: if ($hash{'display_attrs_4'} == 1) {
683: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
684: if ($metafile == 1);
685: $keywords = ' ' if (!$keywords);
686: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
687: " </td>\n");
688: }
689: if ($hash{'display_attrs_5'} == 1) {
690: my $lang = &Apache::lonnet::metadata($filelink,'language')
691: if ($metafile == 1);
692: $lang = $language{$lang};
693: $lang = ' ' if (!$lang);
694: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
695: " </td>\n");
696: }
697: $r->print("</tr>\n");
698: }
699:
700: # -- display directory
701: if ($fnptr == $dirptr) {
702: my @file_ext = split (/\./,$listname);
703: my $curfext = $file_ext[scalar(@file_ext)-1];
704: my $curdir = $startdir.$filecom[0].'/';
705: my $anchor = $curdir;
706: $anchor =~ s/\///g;
707: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
708: &begin_form ($r,$curdir);
709: my $indentm1 = $indent-1;
710: if ($indentm1 < 11 and $indentm1 > 0) {
711: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
712: ".gif border='0' />\n");
713: } else {
714: my $ten = int($indentm1/10.);
715: my $rem = $indentm1%10.0;
716: my $count = 0;
717: while ($count < $ten) {
718: $r->print ("<img src=",$iconpath
719: ,"whitespace10.gif border='0' />\n");
720: $count++;
721: }
722: $r->print ("<img src=",$iconpath,"whitespace",$rem,
723: ".gif border='0' />\n") if $rem > 0;
724: }
725: $r->print ('<input type="hidden" name="acts" value="">');
726: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
727: 'folder_pointer_'.$diropen.'.gif"');
728: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
729: "\n");
730: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
731: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
732: "\n");
733: $r->print ("$listname$tabtag</tr></form>\n");
734: }
735:
736: }
737:
738: # ------------------- prints the beginning of a form for directory or file link
739: sub begin_form {
740: my ($r,$uri) = @_;
741: my $anchor = $uri;
742: $anchor =~ s/\///g;
743: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
744: '#'.$anchor.
745: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
746: ',document.forms.fileattr.acts.value)" '.
747: 'enctype="application/x-www-form-urlencoded">'."\n");
748: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
749: "\n");
750: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
751: $dnum++;
752: }
753:
754: # ----------- grab unprocessed CGI variables that may have been appended to URL
755: sub get_unprocessed_cgi {
756: foreach (split(/&/,$ENV{'QUERY_STRING'})) {
757: my ($name, $value) = split(/=/,$_);
758: $value =~ tr/+/ /;
759: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
760: if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') {
761: $ENV{'form.'.$name}=$value;
762: }
763: }
764: }
765:
766: # --------- settings whenever the user causes the indexer window to be launched
767: sub start_fresh_session {
768: delete $hash{'mode_catalog'};
769: foreach (keys %hash) {
770: if ($_ =~ /^pre_/) {
771: delete $hash{$_};
772: }
773: if ($_ =~ /^store/) {
774: delete $hash{$_};
775: }
776: }
777: }
778:
779: 1;
780:
781: =head1 NAME
782:
783: Apache::lonindexer - mod_perl module for cross server filesystem browsing
784:
785: =head1 SYNOPSIS
786:
787: Invoked by /etc/httpd/conf/srm.conf:
788:
789: <LocationMatch "^/res.*/$">
790: SetHandler perl-script
791: PerlHandler Apache::lonindexer
792: </LocationMatch>
793:
794: =head1 INTRODUCTION
795:
796: This module enables a scheme of browsing across a cross server.
797:
798: This is part of the LearningOnline Network with CAPA project
799: described at http://www.lon-capa.org.
800:
801: =head1 BEGIN SUBROUTINE
802:
803: This routine is only run once after compilation.
804:
805: =over 4
806:
807: =item *
808:
809: Initializes %language hash table.
810:
811: =back
812:
813: =head1 HANDLER SUBROUTINE
814:
815: This routine is called by Apache and mod_perl.
816:
817: =over 4
818:
819: =item *
820:
821: read in machine configuration variables
822:
823: =item *
824:
825: see if called from an interactive mode
826:
827: =item *
828:
829: refresh environment with user database values (in %hash)
830:
831: =item *
832:
833: define extra fields and buttons in case of special mode
834:
835: =item *
836:
837: set catalogmodefunctions to have extra needed javascript functionality
838:
839: =item *
840:
841: print header
842:
843: =item *
844:
845: evaluate actions from previous page (both cumulatively and chronologically)
846:
847: =item *
848:
849: output title
850:
851: =item *
852:
853: get state of file attributes to be showing
854:
855: =item *
856:
857: output state of file attributes to be showing
858:
859: =item *
860:
861: output starting row to the indexed file/directory hierarchy
862:
863: =item *
864:
865: read in what directories have previously been set to "open"
866:
867: =item *
868:
869: if not at top level, provide an uplink arrow
870:
871: =item *
872:
873: recursively go through all the directories and output as appropriate
874:
875: =item *
876:
877: information useful for group import
878:
879: =item *
880:
881: end the tables
882:
883: =item *
884:
885: end the output and return
886:
887: =back
888:
889: =head1 OTHER SUBROUTINES
890:
891: =over 4
892:
893: =item *
894:
895: scanDir - recursive scan of a directory
896:
897: =item *
898:
899: get_list - get complete matched list based on the uri (returns an array)
900:
901: =item *
902:
903: match_ext - filters out files based on extensions (returns an array)
904:
905: =item *
906:
907: display_line - displays one line in appropriate table format
908:
909: =item *
910:
911: begin_form - prints the beginning of a form for directory or file link
912:
913: =item *
914:
915: get_unprocessed_cgi - grab unprocessed CGI variables that may have been
916: appended to URL
917:
918: =item *
919:
920: start_fresh_session - settings whenever the user causes the indexer window
921: to be launched
922:
923: =back
924:
925: =cut
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