1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.29 2001/12/13 13:42:15 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: }
83:
84: # ----------------------------- Handling routine called via Apache and mod_perl
85: sub handler {
86: my $r = shift;
87: $r->content_type('text/html');
88: $r->send_http_header;
89: return OK if $r->header_only;
90: $fnum=0;
91: $dnum=0;
92: untie %hash;
93:
94: # ------------------------------------- read in machine configuration variables
95: my $iconpath= $r->dir_config('lonIconsURL') . "/";
96: my $domain = $r->dir_config('lonDefDomain');
97: my $role = $r->dir_config('lonRole');
98: my $loadlim = $r->dir_config('lonLoadLim');
99: my $servadm = $r->dir_config('lonAdmEMail');
100: my $sysadm = $r->dir_config('lonSysEMail');
101: my $lonhost = $r->dir_config('lonHostID');
102: my $tabdir = $r->dir_config('lonTabDir');
103:
104: my $fileclr='#ffffe6';
105: my $line;
106: my (@attrchk,@openpath);
107: my $uri=$r->uri;
108:
109: # -------------------------------------- see if called from an interactive mode
110: &get_unprocessed_cgi();
111:
112: my $closebutton='';
113: my $groupimportbutton='';
114: my $colspan='';
115:
116: $extrafield='';
117: my $diropendb =
118: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
119:
120: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
121: if ($ENV{'form.launch'} eq '1') {
122: &start_fresh_session();
123: }
124:
125: # -------------------- refresh environment with user database values (in %hash)
126: if ($hash{'mode_catalog'} eq 'interactive') {
127: $ENV{'form.catalogmode'}='interactive';
128: }
129: if ($hash{'mode_catalog'} eq 'groupimport') {
130: $ENV{'form.catalogmode'}='groupimport';
131: }
132:
133: # --------------------- define extra fields and buttons in case of special mode
134: if ($ENV{'form.catalogmode'} eq 'interactive') {
135: $hash{'mode_catalog'}='interactive';
136: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
137: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
138: ' border="0" /></td>';
139: $colspan=" colspan='2' ";
140: $closebutton=<<END;
141: <input type="button" name="close" value='CLOSE' onClick="self.close()">
142: END
143: }
144: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
145: $hash{'mode_catalog'}='groupimport';
146: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
147: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
148: ' border="0" /></td>';
149: $colspan=" colspan='2' ";
150: $closebutton=<<END;
151: <input type="button" name="close" value='CLOSE' onClick="self.close()">
152: END
153: $groupimportbutton=<<END;
154: <input type="button" name="groupimport" value='GROUP IMPORT'
155: onClick="javascript:select_group()">
156: END
157: }
158:
159: # ------ set catalogmodefunctions to have extra needed javascript functionality
160: my $catalogmodefunctions='';
161: if ($ENV{'form.catalogmode'} eq 'interactive' or
162: $ENV{'form.catalogmode'} eq 'groupimport') {
163: $catalogmodefunctions=<<END;
164: function select_data(title,url) {
165: changeTitle(title);
166: changeURL(url);
167: self.close();
168: }
169: function select_group() {
170: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value;
171: }
172: function changeTitle(val) {
173: if (opener.inf.document.forms.resinfo.elements.t) {
174: opener.inf.document.forms.resinfo.elements.t.value=val;
175: }
176: }
177: function changeURL(val) {
178: if (opener.inf.document.forms.resinfo.elements.u) {
179: opener.inf.document.forms.resinfo.elements.u.value=val;
180: }
181: }
182: END
183: }
184: if ($ENV{'form.catalogmode'} eq 'groupimport') {
185: $catalogmodefunctions.=<<END;
186: var acts='';
187: function queue(val) {
188: if (eval("document.forms."+val+".filelink.checked")) {
189: var l=val.length;
190: var v=val.substring(4,l);
191: document.forms.fileattr.acts.value+='1a'+v+'b';
192: }
193: else {
194: var l=val.length;
195: var v=val.substring(4,l);
196: document.forms.fileattr.acts.value+='0a'+v+'b';
197: }
198: }
199: function rep_dirpath(suffix,val) {
200: eval("document.forms.dirpath"+suffix+".acts.value=val");
201: }
202: END
203: }
204:
205: # ---------------------------------------------------------------- Print Header
206: $r->print(<<ENDHEADER);
207: <html>
208: <head>
209: <title>The LearningOnline Network With CAPA Directory Browser</title>
210:
211: <script type="text/javascript">
212: $catalogmodefunctions
213: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
214: var options = "width=" + w + ",height=" + h + ",";
215: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
216: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
217: var newWin = window.open(url, wdwName, options);
218: newWin.focus();
219: }
220: function gothere(val) {
221: window.location=val+'?acts='+document.forms.fileattr.acts.value;
222: }
223: </script>
224:
225: </head>
226: <body bgcolor="#FFFFFF">
227: ENDHEADER
228:
229: # - Evaluate actions from previous page (both cumulatively and chronologically)
230: if ($ENV{'form.catalogmode'} eq 'groupimport') {
231: my $acts=$ENV{'form.acts'};
232: my @Acts=split(/b/,$acts);
233: my %ahash;
234: my %achash;
235: my $ac=0;
236: # some initial hashes for working with data
237: foreach (@Acts) {
238: my ($state,$ref)=split(/a/);
239: $ahash{$ref}=$state;
240: $achash{$ref}=$ac;
241: $ac++;
242: }
243: # sorting through the actions and changing the tied database hash
244: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
245: my $key=$_;
246: if ($ahash{$key} eq '1') {
247: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
248: $hash{'pre_'.$key.'_title'};
249: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
250: $hash{'storectr'}+0;
251: $hash{'storectr'}++;
252: }
253: if ($ahash{$key} eq '0') {
254: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
255: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
256: }
257: }
258: }
259: # deleting the previously cached listing
260: foreach (keys %hash) {
261: if ($_ =~ /^pre_/ && $_ =~/link$/) {
262: my $key = $_;
263: $key =~ s/^pre_//;
264: $key =~ s/_[^_]*$//;
265: delete $hash{'pre_'.$key.'_title'};
266: delete $hash{'pre_'.$key.'_link'};
267: }
268: }
269: }
270:
271: # ---------------------------------------------------------------- output title
272: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
273: 'Network Directory Browser</font></h2>'."\n");
274: # ---------------------------------- get state of file attributes to be showing
275: if ($ENV{'form.attrs'} ne "") {
276: for (my $i=0; $i<=6; $i++) {
277: delete $hash{'display_attrs_'.$i};
278: if ($ENV{'form.attr'.$i} == 1) {
279: $attrchk[$i] = "checked";
280: $hash{'display_attrs_'.$i} = 1;
281: }
282: }
283: } else {
284: for (my $i=0; $i<=6; $i++) {
285: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
286: }
287: }
288: # ------------------------------- output state of file attributes to be showing
289: $r->print(<<END);
290: <b><font color="#666666">Display file attributes</font></b><br />
291: <form method="post" name="fileattr" action="$uri"
292: enctype="application/x-www-form-urlencoded">
293: <table border=0><tr>
294: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
295: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
296: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
297: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
298: </tr><tr>
299: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
300: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
301: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
302: <td> </td>
303: </tr></table>
304: <input type="hidden" name="dirPointer" value="on" />
305: <input type="hidden" name="acts" value="" />
306: <input type="submit" name="attrs" value="Review" />
307: <input type="submit" name="attrs" value="Refresh" />
308: $closebutton
309: $groupimportbutton
310: </form>
311: END
312:
313: # ----------------- output starting row to the indexed file/directory hierarchy
314: my $titleclr="#ddffff";
315: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");
316: $r->print("<table border=0><tr>\n");
317: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
318: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
319: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
320: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
321: if ($hash{'display_attrs_1'} == 1);
322: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
323: if ($hash{'display_attrs_2'} == 1);
324: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
325: if ($hash{'display_attrs_3'} == 1);
326: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
327: if ($hash{'display_attrs_4'} == 1);
328: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
329: if ($hash{'display_attrs_5'} == 1);
330: $r->print("</tr>");
331:
332: # ----------------- read in what directories have previously been set to "open"
333: foreach (keys %hash) {
334: if ($_ =~ /^diropen_status_/) {
335: my $key = $_;
336: $key =~ s/^diropen_status_//;
337: $dirs{$key} = $hash{$_};
338: }
339: }
340:
341: if ($ENV{'form.openuri'}) { # take care of review and refresh options
342: my $uri=$ENV{'form.openuri'};
343: if (exists($hash{'diropen_status_'.$uri})) {
344: my $cursta = $hash{'diropen_status_'.$uri};
345: $dirs{$uri} = 'open';
346: $hash{'diropen_status_'.$uri} = 'open';
347: if ($cursta eq 'open') {
348: $dirs{$uri} = 'closed';
349: $hash{'diropen_status_'.$uri} = 'closed';
350: }
351: } else {
352: $hash{'diropen_status_'.$uri} = 'open';
353: $dirs{$uri} = 'open';
354: }
355: }
356:
357: my $bredir = $ENV{'form.dirPointer'};
358: my $toplevel;
359: my $indent = 0;
360: $uri = $uri.'/' if $uri !~ /.*\/$/;
361:
362: if ($bredir ne "on") {
363: $hash{'top.level'} = $uri;
364: $toplevel = $uri;
365:
366: } else {
367: $toplevel = $hash{'top.level'};
368: }
369:
370: # -------------------------------- if not at top level, provide an uplink arrow
371: if ($toplevel ne "/res/"){
372: my (@uri_com) = split(/\//,$uri);
373: pop @uri_com;
374: my $upone = join('/',@uri_com);
375: my @list = qw (0);
376: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
377: $indent = 1;
378: }
379:
380: # -------- recursively go through all the directories and output as appropriate
381: &scanDir ($r,$toplevel,$indent,\%hash);
382:
383: # ---------------------------- embed hidden information useful for group import
384: $r->print("<form name='fnum'>");
385: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
386:
387: # -------------------------------------------------------------- end the tables
388: $r->print("</table>");
389: $r->print("</td></tr></table>");
390:
391: # --------------------------------------------------- end the output and return
392: $r->print("</body></html>\n");
393: untie(%hash);
394: } else {
395: $r->print('<html><head></head><body>Unable to tie hash to db '.
396: 'file</body></html>');
397: return OK;
398: }
399: return OK;
400: }
401:
402: # ----------------------------------------------- recursive scan of a directory
403: sub scanDir {
404: my ($r,$startdir,$indent,$hashref)=@_;
405: my ($compuri,$curdir);
406: my $dirptr=16384;
407: $indent++;
408:
409: my %dupdirs = %dirs;
410: my @list=&get_list($r,$startdir);
411: foreach my $line (@list) {
412: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
413: next if $strip =~ /.*\.meta$/;
414: my (@fileparts) = split(/\./,$strip);
415: if ($hash{'display_attrs_6'} != 1) {
416: if (scalar(@fileparts) >= 3) {
417: my $fext = pop @fileparts;
418: my $ov = pop @fileparts;
419: my $fname = join ('.',@fileparts,$fext);
420: next if (grep /$fname/,@list and $ov =~ /\d+/);
421: }
422: }
423:
424: if ($dom eq "domain") {
425: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
426: $curdir = $compuri;
427: } else {
428: # user, dir & file have name only, i.e., w/o path
429: $compuri = join('',$startdir,$strip,"/");
430: $curdir = $startdir;
431: }
432: my $diropen = "closed";
433: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
434: while (my ($key,$val)= each %dupdirs) {
435: if ($key eq $compuri and $val eq "open") {
436: $diropen = "opened";
437: delete $dupdirs{key},$dirs{$key};
438: }
439: }
440: }
441: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
442: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
443: }
444: $indent--;
445: }
446:
447: # --------------- get complete matched list based on the uri (returns an array)
448: sub get_list {
449: my ($r,$uri)=@_;
450: my @list;
451: my $luri = $uri;
452: $luri =~ s/\//_/g;
453:
454: if ($ENV{'form.attrs'} eq "Refresh") {
455: foreach (keys %hash) {
456: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
457: }
458: }
459:
460: if ($hash{'dirlist_files'.$luri}) {
461: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
462: } else {
463: @list = &Apache::lonnet::dirlist($uri);
464: $hash{'dirlist_files_'.$luri} = join('\n',@list);
465: }
466: return @list=&match_ext($r,@list);
467: }
468:
469: # -------------------- filters out files based on extensions (returns an array)
470: sub match_ext {
471: my ($r,@packlist)=@_;
472: my @trimlist;
473: my $nextline;
474: my @fileext;
475: my $dirptr=16384;
476:
477: foreach my $line (@packlist) {
478: chomp $line;
479: $line =~ s/^\/home\/httpd\/html//;
480: my @unpackline = split (/\&/,$line);
481: next if ($unpackline[0] eq ".");
482: next if ($unpackline[0] eq "..");
483: my @filecom = split (/\./,$unpackline[0]);
484: my $fext = pop(@filecom);
485: my $fnptr = $unpackline[3]&$dirptr;
486: if ($fnptr == 0 and $unpackline[3] ne "") {
487: my $embstyle = &Apache::loncommon::fileembstyle($fext);
488: push @trimlist,$line if (defined($embstyle) &&
489: $embstyle ne 'hdn' );
490: } else {
491: push @trimlist,$line;
492: }
493: }
494: @trimlist = sort (@trimlist);
495: return @trimlist;
496: }
497:
498: # ------------------------------- displays one line in appropriate table format
499: sub display_line {
500: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
501: my (@pathfn, $fndir, $fnptr);
502: my $dirptr=16384;
503: my $fileclr="#ffffe6";
504: my $iconpath= $r->dir_config('lonIconsURL') . "/";
505:
506: my @filecom = split (/\&/,$line);
507: my @pathcom = split (/\//,$filecom[0]);
508: my $listname = $pathcom[scalar(@pathcom)-1];
509: my $fnptr = $filecom[3]&$dirptr;
510: my $msg = 'View '.$filecom[0].' resources';
511: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
512:
513: my $tabtag="</td>";
514: my $i=0;
515:
516: while ($i<=5) {
517: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
518: if $hash{'display_attrs_'.$i} == 1;
519: $i++;
520: }
521:
522: # display uplink arrow
523: if ($filecom[1] eq "viewOneUp") {
524: $r->print("<tr>$extrafield");
525: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
526: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
527: '/" '.
528: 'onSubmit="return rep_dirpath(\'UP\','.
529: 'document.forms.fileattr.acts.value)" '.
530: 'enctype="application/x-www-form-urlencoded"'.
531: '>'."\n");
532: $r->print ('<input type=hidden name=openuri value="'.
533: $startdir.'">'."\n");
534: $r->print ('<input type="hidden" name="acts" value="">'."\n");
535: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
536: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
537: "\n");
538: $r->print("Up $tabtag</tr></form>\n");
539: return OK;
540: }
541:
542: # display domain
543: if ($filecom[1] eq "domain") {
544: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
545: if ($ENV{'form.dirPointer'} eq "on");
546: $r->print("<tr>$extrafield");
547: $r->print("<td bgcolor=$fileclr valign=bottom>");
548: &begin_form ($r,$filecom[0].'/');
549: my $anchor = $filecom[0].'/';
550: $anchor =~ s/\///g;
551: $r->print ('<a name="'.$anchor.'">');
552: $r->print ('<input type="hidden" name="acts" value="">');
553: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
554: $diropen.'.gif"');
555: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
556: "\n");
557: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
558: '/\')"><img src="'.$iconpath.'server.gif"');
559: $r->print (' border="0" /></a>'."\n");
560: $r->print("Domain - $listname $tabtag</tr></form>\n");
561: return OK;
562:
563: # display user directory
564: }
565: if ($filecom[1] eq "user") {
566: $r->print("<tr>$extrafield");
567: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
568: my $curdir = $startdir.$filecom[0].'/';
569: my $anchor = $curdir;
570: $anchor =~ s/\///g;
571: &begin_form ($r,$curdir);
572: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
573: 'whitespace1.gif" border="0" />'."\n");
574: $r->print ('<input type="hidden" name="acts" value="">');
575: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
576: '.gif"');
577: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
578: "\n");
579: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
580: $iconpath.'quill.gif border="0" name="'.$msg.
581: '" height="22" /></a>');
582: $r->print ($listname.$tabtag.'</tr></form>'."\n");
583: return OK;
584: }
585:
586: # display file
587: if ($fnptr == 0 and $filecom[3] ne "") {
588: my @file_ext = split (/\./,$listname);
589: my $curfext = $file_ext[-1];
590: # Set the icon for the file
591: my $iconname = "unknown.gif";
592: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
593: # The unless conditional that follows is a bit of overkill
594: $iconname = $curfext.".gif" unless
595: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
596: #
597: my $filelink = $startdir.$filecom[0];
598: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
599: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
600: my $title;
601: if ($ENV{'form.catalogmode'} eq 'interactive') {
602: $title=$listname;
603: $title = &Apache::lonnet::metadata($filelink,'title')
604: if ($metafile == 1);
605: $title=$listname unless $title;
606: $r->print("<a href='javascript:select_data(\"",
607: $title,'","',$filelink,"\")'>");
608: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
609: "\n");
610: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
611: }
612: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
613: $title=$listname;
614: $title = &Apache::lonnet::metadata($filelink,'title')
615: if ($metafile == 1);
616: $title=$listname unless $title;
617: $r->print("<form name='form$fnum'>\n");
618: $r->print("<input type='checkbox' name='filelink"."' ".
619: "value='$filelink' onClick='".
620: "javascript:queue(\"form$fnum\")' ");
621: if ($hash{'store_'.$filelink}) {
622: $r->print("checked");
623: }
624: $r->print(">\n");
625: $r->print("<input type='hidden' name='title"."' ".
626: "value='$title'>\n");
627: $r->print("</form>\n");
628: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
629: $hash{"pre_${fnum}_link"}=$filelink;
630: $hash{"pre_${fnum}_title"}=$title;
631: $fnum++;
632: }
633:
634: if ($indent > 0 and $indent < 11) {
635: $r->print("<img src=",$iconpath,"whitespace",$indent,
636: ".gif border='0' />\n");
637: } elsif ($indent >0) {
638: my $ten = int($indent/10.);
639: my $rem = $indent%10.0;
640: my $count = 0;
641: while ($count < $ten) {
642: $r->print("<img src=",$iconpath,
643: "whitespace10.gif border='0' />\n");
644: $count++;
645: }
646: $r->print("<img src=",$iconpath,"whitespace",$rem,
647: ".gif border='0' />\n") if $rem > 0;
648: }
649:
650: $r->print("<img src=$iconpath$iconname border='0' />\n");
651: $r->print (" <a href=\"javascript:openWindow('".$filelink.
652: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
653: " TARGET=_self>$listname</a> ");
654:
655: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
656: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
657: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
658:
659: $r->print("</td>\n");
660: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
661: $filecom[8]," </td>\n")
662: if $hash{'display_attrs_0'} == 1;
663: $r->print("<td bgcolor=$fileclr valign=bottom> ".
664: (localtime($filecom[9]))." </td>\n")
665: if $hash{'display_attrs_1'} == 1;
666: $r->print("<td bgcolor=$fileclr valign=bottom> ".
667: (localtime($filecom[10]))." </td>\n")
668: if $hash{'display_attrs_2'} == 1;
669:
670: if ($hash{'display_attrs_3'} == 1) {
671: my $author = &Apache::lonnet::metadata($filelink,'author')
672: if ($metafile == 1);
673: $author = ' ' if (!$author);
674: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
675: " </td>\n");
676: }
677: if ($hash{'display_attrs_4'} == 1) {
678: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
679: if ($metafile == 1);
680: $keywords = ' ' if (!$keywords);
681: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
682: " </td>\n");
683: }
684: if ($hash{'display_attrs_5'} == 1) {
685: my $lang = &Apache::lonnet::metadata($filelink,'language')
686: if ($metafile == 1);
687: $lang = &Apache::loncommon::languagedescription($lang);
688: $lang = ' ' if (!$lang);
689: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
690: " </td>\n");
691: }
692: $r->print("</tr>\n");
693: }
694:
695: # -- display directory
696: if ($fnptr == $dirptr) {
697: my @file_ext = split (/\./,$listname);
698: my $curfext = $file_ext[scalar(@file_ext)-1];
699: my $curdir = $startdir.$filecom[0].'/';
700: my $anchor = $curdir;
701: $anchor =~ s/\///g;
702: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
703: &begin_form ($r,$curdir);
704: my $indentm1 = $indent-1;
705: if ($indentm1 < 11 and $indentm1 > 0) {
706: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
707: ".gif border='0' />\n");
708: } else {
709: my $ten = int($indentm1/10.);
710: my $rem = $indentm1%10.0;
711: my $count = 0;
712: while ($count < $ten) {
713: $r->print ("<img src=",$iconpath
714: ,"whitespace10.gif border='0' />\n");
715: $count++;
716: }
717: $r->print ("<img src=",$iconpath,"whitespace",$rem,
718: ".gif border='0' />\n") if $rem > 0;
719: }
720: $r->print ('<input type="hidden" name="acts" value="">');
721: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
722: 'folder_pointer_'.$diropen.'.gif"');
723: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
724: "\n");
725: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
726: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
727: "\n");
728: $r->print ("$listname$tabtag</tr></form>\n");
729: }
730:
731: }
732:
733: # ------------------- prints the beginning of a form for directory or file link
734: sub begin_form {
735: my ($r,$uri) = @_;
736: my $anchor = $uri;
737: $anchor =~ s/\///g;
738: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
739: '#'.$anchor.
740: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
741: ',document.forms.fileattr.acts.value)" '.
742: 'enctype="application/x-www-form-urlencoded">'."\n");
743: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
744: "\n");
745: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
746: $dnum++;
747: }
748:
749: # ----------- grab unprocessed CGI variables that may have been appended to URL
750: sub get_unprocessed_cgi {
751: foreach (split(/&/,$ENV{'QUERY_STRING'})) {
752: my ($name, $value) = split(/=/,$_);
753: $value =~ tr/+/ /;
754: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
755: if ($name eq 'catalogmode' or $name eq 'launch' or $name eq 'acts') {
756: $ENV{'form.'.$name}=$value;
757: }
758: }
759: }
760:
761: # --------- settings whenever the user causes the indexer window to be launched
762: sub start_fresh_session {
763: delete $hash{'mode_catalog'};
764: foreach (keys %hash) {
765: if ($_ =~ /^pre_/) {
766: delete $hash{$_};
767: }
768: if ($_ =~ /^store/) {
769: delete $hash{$_};
770: }
771: }
772: }
773:
774: 1;
775:
776: =head1 NAME
777:
778: Apache::lonindexer - mod_perl module for cross server filesystem browsing
779:
780: =head1 SYNOPSIS
781:
782: Invoked by /etc/httpd/conf/srm.conf:
783:
784: <LocationMatch "^/res.*/$">
785: SetHandler perl-script
786: PerlHandler Apache::lonindexer
787: </LocationMatch>
788:
789: =head1 INTRODUCTION
790:
791: This module enables a scheme of browsing across a cross server.
792:
793: This is part of the LearningOnline Network with CAPA project
794: described at http://www.lon-capa.org.
795:
796: =head1 BEGIN SUBROUTINE
797:
798: This routine is only run once after compilation.
799:
800: =over 4
801:
802: =item *
803:
804: Initializes %language hash table.
805:
806: =back
807:
808: =head1 HANDLER SUBROUTINE
809:
810: This routine is called by Apache and mod_perl.
811:
812: =over 4
813:
814: =item *
815:
816: read in machine configuration variables
817:
818: =item *
819:
820: see if called from an interactive mode
821:
822: =item *
823:
824: refresh environment with user database values (in %hash)
825:
826: =item *
827:
828: define extra fields and buttons in case of special mode
829:
830: =item *
831:
832: set catalogmodefunctions to have extra needed javascript functionality
833:
834: =item *
835:
836: print header
837:
838: =item *
839:
840: evaluate actions from previous page (both cumulatively and chronologically)
841:
842: =item *
843:
844: output title
845:
846: =item *
847:
848: get state of file attributes to be showing
849:
850: =item *
851:
852: output state of file attributes to be showing
853:
854: =item *
855:
856: output starting row to the indexed file/directory hierarchy
857:
858: =item *
859:
860: read in what directories have previously been set to "open"
861:
862: =item *
863:
864: if not at top level, provide an uplink arrow
865:
866: =item *
867:
868: recursively go through all the directories and output as appropriate
869:
870: =item *
871:
872: information useful for group import
873:
874: =item *
875:
876: end the tables
877:
878: =item *
879:
880: end the output and return
881:
882: =back
883:
884: =head1 OTHER SUBROUTINES
885:
886: =over 4
887:
888: =item *
889:
890: scanDir - recursive scan of a directory
891:
892: =item *
893:
894: get_list - get complete matched list based on the uri (returns an array)
895:
896: =item *
897:
898: match_ext - filters out files based on extensions (returns an array)
899:
900: =item *
901:
902: display_line - displays one line in appropriate table format
903:
904: =item *
905:
906: begin_form - prints the beginning of a form for directory or file link
907:
908: =item *
909:
910: get_unprocessed_cgi - grab unprocessed CGI variables that may have been
911: appended to URL
912:
913: =item *
914:
915: start_fresh_session - settings whenever the user causes the indexer window
916: to be launched
917:
918: =back
919:
920: =cut
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