1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.38 2002/03/14 21:37:04 matthew 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: # YEAR=2002
45: # 1/17 Scott Harrison
46: #
47: ###
48:
49: ###############################################################################
50: ## ##
51: ## ORGANIZATION OF THIS PERL MODULE ##
52: ## ##
53: ## 1. Description of functions ##
54: ## 2. Modules used by this module ##
55: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
56: ## 4. BEGIN block (to be run once after compilation) ##
57: ## 5. Handling routine called via Apache and mod_perl ##
58: ## 6. Other subroutines ##
59: ## ##
60: ###############################################################################
61:
62: package Apache::lonindexer;
63:
64: # ------------------------------------------------- modules used by this module
65: use strict;
66: use Apache::lonnet();
67: use Apache::loncommon();
68: use Apache::Constants qw(:common);
69: use Apache::File;
70: use GDBM_File;
71:
72: # ---------------------------------------- variables used throughout the module
73: my %hash; # tied to a user-specific gdbm file
74: my %dirs; # keys are directories, values are the open/close status
75: my %language; # has the reference information present in language.tab
76:
77: # ----- Values which are set by the handler subroutine and are accessible to
78: # ----- other methods.
79: my $extrafield; # default extra table cell
80: my $fnum; # file counter
81: my $dnum; # directory counter
82:
83: # ----------------------------- Handling routine called via Apache and mod_perl
84: sub handler {
85: my $r = shift;
86: $r->content_type('text/html');
87: $r->send_http_header;
88: return OK if $r->header_only;
89: $fnum=0;
90: $dnum=0;
91: untie %hash;
92:
93: # ------------------------------------- read in machine configuration variables
94: my $iconpath= $r->dir_config('lonIconsURL') . "/";
95: my $domain = $r->dir_config('lonDefDomain');
96: my $role = $r->dir_config('lonRole');
97: my $loadlim = $r->dir_config('lonLoadLim');
98: my $servadm = $r->dir_config('lonAdmEMail');
99: my $sysadm = $r->dir_config('lonSysEMail');
100: my $lonhost = $r->dir_config('lonHostID');
101: my $tabdir = $r->dir_config('lonTabDir');
102:
103: my $fileclr='#ffffe6';
104: my $line;
105: my (@attrchk,@openpath);
106: my $uri=$r->uri;
107:
108: # -------------------------------------- see if called from an interactive mode
109: # Get the parameters from the query string
110: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
111: ['catalogmode','launch','acts','mode','form','element']);
112: #-------------------------------------------------------------------
113: my $closebutton='';
114: my $groupimportbutton='';
115: my $colspan='';
116:
117: $extrafield='';
118: my $diropendb =
119: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
120:
121: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
122: if ($ENV{'form.launch'} eq '1') {
123: &start_fresh_session();
124: }
125:
126: # -------------------- refresh environment with user database values (in %hash)
127: if ($hash{'mode_catalog'} eq 'interactive') {
128: $ENV{'form.catalogmode'}='interactive';
129: }
130: if ($hash{'mode_catalog'} eq 'groupimport') {
131: $ENV{'form.catalogmode'}='groupimport';
132: }
133:
134: # --------------------- define extra fields and buttons in case of special mode
135: if ($ENV{'form.catalogmode'} eq 'interactive') {
136: $hash{'mode_catalog'}='interactive';
137: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
138: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
139: ' border="0" /></td>';
140: $colspan=" colspan='2' ";
141: $closebutton=<<END;
142: <input type="button" name="close" value='CLOSE' onClick="self.close()">
143: END
144: }
145: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
146: $hash{'mode_catalog'}='groupimport';
147: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
148: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
149: ' border="0" /></td>';
150: $colspan=" colspan='2' ";
151: $closebutton=<<END;
152: <input type="button" name="close" value='CLOSE' onClick="self.close()">
153: END
154: $groupimportbutton=<<END;
155: <input type="button" name="groupimport" value='GROUP IMPORT'
156: onClick="javascript:select_group()">
157: END
158: }
159: # Additions made by Matthew to make the browser a little easier to deal
160: # with in the future.
161: #
162: # $mode (at this time) indicates if we are in edit mode.
163: # $form is the name of the form that the URL is placed when the
164: # selection is made.
165: # $element is the name of the element in $formname which receives
166: # the URL.
167: # &Apache::lonxml::debug('Checking mode, form, element');
168: &setvalues(\%hash,'form_mode' ,\%ENV,'form.mode' );
169: &setvalues(\%hash,'form_form' ,\%ENV,'form.form' );
170: &setvalues(\%hash,'form_element',\%ENV,'form.element');
171:
172: my $mode = $ENV{'form.mode'};
173: my ($form,$element);
174: if ($mode eq 'edit') {
175: $form = $ENV{'form.form'};
176: $element = $ENV{'form.element'};
177: }
178: &Apache::lonxml::debug("mode=$mode form=$form element=$element");
179: # ------ set catalogmodefunctions to have extra needed javascript functionality
180: my $catalogmodefunctions='';
181: if ($ENV{'form.catalogmode'} eq 'interactive' or
182: $ENV{'form.catalogmode'} eq 'groupimport') {
183: # The if statement below sets us up to use the old version
184: # by default (ie. if $mode is undefined). This is the easy
185: # way out. Hopefully in the future I'll find a way to get
186: # the calls dealt with in a more comprehensive manner.
187: if (!defined($mode) || $mode ne 'edit') {
188: $catalogmodefunctions=<<"END";
189: function select_data(title,url) {
190: changeTitle(title);
191: changeURL(url);
192: self.close();
193: }
194: function select_group() {
195: window.location="/adm/groupsort?catalogmode=groupimport&acts="+document.forms.fileattr.acts.value;
196: }
197: function changeTitle(val) {
198: if (opener.inf) {
199: if (opener.inf.document.forms.resinfo.elements.t) {
200: opener.inf.document.forms.resinfo.elements.t.value=val;
201: }
202: }
203: }
204: function changeURL(val) {
205: if (opener.inf) {
206: if (opener.inf.document.forms.resinfo.elements.u) {
207: opener.inf.document.forms.resinfo.elements.u.value=val;
208: }
209: }
210: }
211: END
212: } else { # we are in 'edit' mode
213: $catalogmodefunctions=<<END;
214: // mode = $mode
215: function select_data(title,url) {
216: changeURL(url);
217: self.close();
218: }
219:
220: function select_group() {
221: window.location="/adm/groupsort?catalogmode=interactive&form=$form&element=$element&mode=edit&acts="+document.forms.fileattr.acts.value;
222: }
223:
224: function changeURL(val) {
225: if (window.opener.document) {
226: window.opener.document.forms["$form"].elements["$element"].value=val;
227: } else {
228: alert("The file you selected is: "+val);
229: }
230: }
231:
232: END
233: }
234: }
235: $catalogmodefunctions.=<<END;
236: var acts='';
237: function rep_dirpath(suffix,val) {
238: eval("document.forms.dirpath"+suffix+".acts.value=val");
239: }
240: END
241: if ($ENV{'form.catalogmode'} eq 'groupimport') {
242: $catalogmodefunctions.=<<END;
243: function queue(val) {
244: if (eval("document.forms."+val+".filelink.checked")) {
245: var l=val.length;
246: var v=val.substring(4,l);
247: document.forms.fileattr.acts.value+='1a'+v+'b';
248: }
249: else {
250: var l=val.length;
251: var v=val.substring(4,l);
252: document.forms.fileattr.acts.value+='0a'+v+'b';
253: }
254: }
255: END
256: }
257:
258: # ---------------------------------------------------------------- Print Header
259: $r->print(<<ENDHEADER);
260: <html>
261: <head>
262: <title>The LearningOnline Network With CAPA Directory Browser</title>
263:
264: <script type="text/javascript">
265: $catalogmodefunctions
266: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
267: var options = "width=" + w + ",height=" + h + ",";
268: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
269: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
270: var newWin = window.open(url, wdwName, options);
271: newWin.focus();
272: }
273: function gothere(val) {
274: window.location=val+'?acts='+document.forms.fileattr.acts.value;
275: }
276: </script>
277:
278: </head>
279: <body bgcolor="#FFFFFF">
280: ENDHEADER
281:
282: # - Evaluate actions from previous page (both cumulatively and chronologically)
283: if ($ENV{'form.catalogmode'} eq 'groupimport') {
284: my $acts=$ENV{'form.acts'};
285: my @Acts=split(/b/,$acts);
286: my %ahash;
287: my %achash;
288: my $ac=0;
289: # some initial hashes for working with data
290: foreach (@Acts) {
291: my ($state,$ref)=split(/a/);
292: $ahash{$ref}=$state;
293: $achash{$ref}=$ac;
294: $ac++;
295: }
296: # sorting through the actions and changing the tied database hash
297: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
298: my $key=$_;
299: if ($ahash{$key} eq '1') {
300: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
301: $hash{'pre_'.$key.'_title'};
302: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
303: $hash{'storectr'}+0;
304: $hash{'storectr'}++;
305: }
306: if ($ahash{$key} eq '0') {
307: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
308: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
309: }
310: }
311: }
312: # deleting the previously cached listing
313: foreach (keys %hash) {
314: if ($_ =~ /^pre_/ && $_ =~/link$/) {
315: my $key = $_;
316: $key =~ s/^pre_//;
317: $key =~ s/_[^_]*$//;
318: delete $hash{'pre_'.$key.'_title'};
319: delete $hash{'pre_'.$key.'_link'};
320: }
321: }
322: }
323:
324: # ---------------------------------------------------------------- output title
325: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
326: 'Network Directory Browser</font></h2>'."\n");
327: # ---------------------------------- get state of file attributes to be showing
328: if ($ENV{'form.attrs'} ne "") {
329: for (my $i=0; $i<=6; $i++) {
330: delete $hash{'display_attrs_'.$i};
331: if ($ENV{'form.attr'.$i} == 1) {
332: $attrchk[$i] = "checked";
333: $hash{'display_attrs_'.$i} = 1;
334: }
335: }
336: } else {
337: for (my $i=0; $i<=6; $i++) {
338: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
339: }
340: }
341: # ------------------------------- output state of file attributes to be showing
342: $r->print(<<END);
343: <b><font color="#666666">Display file attributes</font></b><br />
344: <form method="post" name="fileattr" action="$uri"
345: enctype="application/x-www-form-urlencoded">
346: <table border=0><tr>
347: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
348: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
349: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
350: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
351: </tr><tr>
352: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
353: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
354: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
355: <td> </td>
356: </tr></table>
357: <input type="hidden" name="dirPointer" value="on" />
358: <input type="hidden" name="acts" value="" />
359: <input type="submit" name="attrs" value="Review" />
360: <input type="submit" name="attrs" value="Refresh" />
361: $closebutton
362: $groupimportbutton
363: </form>
364: END
365:
366: # ----------------- output starting row to the indexed file/directory hierarchy
367: my $titleclr="#ddffff";
368: $r->print("<table border=0><tr><td bgcolor=#eeeeee>\n");
369: $r->print("<table border=0><tr>\n");
370: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
371: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
372: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
373: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
374: if ($hash{'display_attrs_1'} == 1);
375: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
376: if ($hash{'display_attrs_2'} == 1);
377: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
378: if ($hash{'display_attrs_3'} == 1);
379: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
380: if ($hash{'display_attrs_4'} == 1);
381: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
382: if ($hash{'display_attrs_5'} == 1);
383: $r->print("</tr>");
384:
385: # ----------------- read in what directories have previously been set to "open"
386: foreach (keys %hash) {
387: if ($_ =~ /^diropen_status_/) {
388: my $key = $_;
389: $key =~ s/^diropen_status_//;
390: $dirs{$key} = $hash{$_};
391: }
392: }
393:
394: if ($ENV{'form.openuri'}) { # take care of review and refresh options
395: my $uri=$ENV{'form.openuri'};
396: if (exists($hash{'diropen_status_'.$uri})) {
397: my $cursta = $hash{'diropen_status_'.$uri};
398: $dirs{$uri} = 'open';
399: $hash{'diropen_status_'.$uri} = 'open';
400: if ($cursta eq 'open') {
401: $dirs{$uri} = 'closed';
402: $hash{'diropen_status_'.$uri} = 'closed';
403: }
404: } else {
405: $hash{'diropen_status_'.$uri} = 'open';
406: $dirs{$uri} = 'open';
407: }
408: }
409:
410: my $bredir = $ENV{'form.dirPointer'};
411: my $toplevel;
412: my $indent = 0;
413: $uri = $uri.'/' if $uri !~ /.*\/$/;
414:
415: if ($bredir ne "on") {
416: $hash{'top.level'} = $uri;
417: $toplevel = $uri;
418:
419: } else {
420: $toplevel = $hash{'top.level'};
421: }
422:
423: # -------------------------------- if not at top level, provide an uplink arrow
424: if ($toplevel ne "/res/"){
425: my (@uri_com) = split(/\//,$uri);
426: pop @uri_com;
427: my $upone = join('/',@uri_com);
428: my @list = qw (0);
429: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
430: $indent = 1;
431: }
432:
433: # -------- recursively go through all the directories and output as appropriate
434: &scanDir ($r,$toplevel,$indent,\%hash);
435:
436: # ---------------------------- embed hidden information useful for group import
437: $r->print("<form name='fnum'>");
438: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
439:
440: # -------------------------------------------------------------- end the tables
441: $r->print("</table>");
442: $r->print("</td></tr></table>");
443:
444: # --------------------------------------------------- end the output and return
445: $r->print("</body></html>\n");
446: untie(%hash);
447: } else {
448: $r->print('<html><head></head><body>Unable to tie hash to db '.
449: 'file</body></html>');
450: return OK;
451: }
452: return OK;
453: }
454:
455: # ----------------------------------------------- recursive scan of a directory
456: sub scanDir {
457: my ($r,$startdir,$indent,$hashref)=@_;
458: my ($compuri,$curdir);
459: my $dirptr=16384;
460: $indent++;
461:
462: my %dupdirs = %dirs;
463: my @list=&get_list($r,$startdir);
464: foreach my $line (@list) {
465: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
466: next if $strip =~ /.*\.meta$/;
467: my (@fileparts) = split(/\./,$strip);
468: if ($hash{'display_attrs_6'} != 1) {
469: if (scalar(@fileparts) >= 3) {
470: my $fext = pop @fileparts;
471: my $ov = pop @fileparts;
472: my $fname = join ('.',@fileparts,$fext);
473: next if (grep /$fname/,@list and $ov =~ /\d+/);
474: }
475: }
476:
477: if ($dom eq "domain") {
478: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
479: $curdir = $compuri;
480: } else {
481: # user, dir & file have name only, i.e., w/o path
482: $compuri = join('',$startdir,$strip,"/");
483: $curdir = $startdir;
484: }
485: my $diropen = "closed";
486: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
487: while (my ($key,$val)= each %dupdirs) {
488: if ($key eq $compuri and $val eq "open") {
489: $diropen = "opened";
490: delete $dupdirs{key},$dirs{$key};
491: }
492: }
493: }
494: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
495: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
496: }
497: $indent--;
498: }
499:
500: # --------------- get complete matched list based on the uri (returns an array)
501: sub get_list {
502: my ($r,$uri)=@_;
503: my @list;
504: my $luri = $uri;
505: $luri =~ s/\//_/g;
506:
507: if ($ENV{'form.attrs'} eq "Refresh") {
508: foreach (keys %hash) {
509: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
510: }
511: }
512:
513: if ($hash{'dirlist_files'.$luri}) {
514: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
515: } else {
516: @list = &Apache::lonnet::dirlist($uri);
517: $hash{'dirlist_files_'.$luri} = join('\n',@list);
518: }
519: return @list=&match_ext($r,@list);
520: }
521:
522: # -------------------- filters out files based on extensions (returns an array)
523: sub match_ext {
524: my ($r,@packlist)=@_;
525: my @trimlist;
526: my $nextline;
527: my @fileext;
528: my $dirptr=16384;
529:
530: foreach my $line (@packlist) {
531: chomp $line;
532: $line =~ s/^\/home\/httpd\/html//;
533: my @unpackline = split (/\&/,$line);
534: next if ($unpackline[0] eq ".");
535: next if ($unpackline[0] eq "..");
536: my @filecom = split (/\./,$unpackline[0]);
537: my $fext = pop(@filecom);
538: my $fnptr = $unpackline[3]&$dirptr;
539: if ($fnptr == 0 and $unpackline[3] ne "") {
540: my $embstyle = &Apache::loncommon::fileembstyle($fext);
541: push @trimlist,$line if (defined($embstyle) &&
542: ($embstyle ne 'hdn' or $fext eq 'meta'));
543: } else {
544: push @trimlist,$line;
545: }
546: }
547: @trimlist = sort (@trimlist);
548: return @trimlist;
549: }
550:
551: # ------------------------------- displays one line in appropriate table format
552: sub display_line {
553: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
554: my (@pathfn, $fndir, $fnptr);
555: my $dirptr=16384;
556: my $fileclr="#ffffe6";
557: my $iconpath= $r->dir_config('lonIconsURL') . "/";
558:
559: my @filecom = split (/\&/,$line);
560: my @pathcom = split (/\//,$filecom[0]);
561: my $listname = $pathcom[scalar(@pathcom)-1];
562: my $fnptr = $filecom[3]&$dirptr;
563: my $msg = 'View '.$filecom[0].' resources';
564: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
565:
566: my $tabtag="</td>";
567: my $i=0;
568:
569: while ($i<=5) {
570: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
571: if $hash{'display_attrs_'.$i} == 1;
572: $i++;
573: }
574:
575: # display uplink arrow
576: if ($filecom[1] eq "viewOneUp") {
577: $r->print("<tr>$extrafield");
578: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
579: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
580: '/" '.
581: 'onSubmit="return rep_dirpath(\'UP\','.
582: 'document.forms.fileattr.acts.value)" '.
583: 'enctype="application/x-www-form-urlencoded"'.
584: '>'."\n");
585: $r->print ('<input type=hidden name=openuri value="'.
586: $startdir.'">'."\n");
587: $r->print ('<input type="hidden" name="acts" value="">'."\n");
588: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
589: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
590: "\n");
591: $r->print("Up $tabtag</tr></form>\n");
592: return OK;
593: }
594:
595: # display domain
596: if ($filecom[1] eq "domain") {
597: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
598: if ($ENV{'form.dirPointer'} eq "on");
599: $r->print("<tr>$extrafield");
600: $r->print("<td bgcolor=$fileclr valign=bottom>");
601: &begin_form ($r,$filecom[0].'/');
602: my $anchor = $filecom[0].'/';
603: $anchor =~ s/\///g;
604: $r->print ('<a name="'.$anchor.'">');
605: $r->print ('<input type="hidden" name="acts" value="">');
606: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
607: $diropen.'.gif"');
608: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
609: "\n");
610: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
611: '/\')"><img src="'.$iconpath.'server.gif"');
612: $r->print (' border="0" /></a>'."\n");
613: $r->print("Domain - $listname $tabtag</tr></form>\n");
614: return OK;
615:
616: # display user directory
617: }
618: if ($filecom[1] eq "user") {
619: $r->print("<tr>$extrafield");
620: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
621: my $curdir = $startdir.$filecom[0].'/';
622: my $anchor = $curdir;
623: $anchor =~ s/\///g;
624: &begin_form ($r,$curdir);
625: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
626: 'whitespace1.gif" border="0" />'."\n");
627: $r->print ('<input type="hidden" name="acts" value="">');
628: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
629: '.gif"');
630: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
631: "\n");
632: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
633: $iconpath.'quill.gif border="0" name="'.$msg.
634: '" height="22" /></a>');
635: $r->print ($listname.$tabtag.'</tr></form>'."\n");
636: return OK;
637: }
638:
639: # display file
640: if ($fnptr == 0 and $filecom[3] ne "") {
641: my @file_ext = split (/\./,$listname);
642: my $curfext = $file_ext[-1];
643: # Set the icon for the file
644: my $iconname = "unknown.gif";
645: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
646: # The unless conditional that follows is a bit of overkill
647: $iconname = $curfext.".gif" unless
648: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
649: #
650: my $filelink = $startdir.$filecom[0];
651: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
652: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
653: my $title;
654: if ($ENV{'form.catalogmode'} eq 'interactive') {
655: $title=$listname;
656: $title = &Apache::lonnet::metadata($filelink,'title')
657: if ($metafile == 1);
658: $title=$listname unless $title;
659: my $titleesc=$title;
660: $titleesc=~s/\'/\\'/; #' (clean up this spare quote
661: $r->print("<a href=\"javascript:select_data(\'",
662: $titleesc,"','",$filelink,"')\">");
663: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
664: "\n");
665: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
666: }
667: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
668: $title=$listname;
669: $title = &Apache::lonnet::metadata($filelink,'title')
670: if ($metafile == 1);
671: $title=$listname unless $title;
672: $r->print("<form name='form$fnum'>\n");
673: $r->print("<input type='checkbox' name='filelink"."' ".
674: "value='$filelink' onClick='".
675: "javascript:queue(\"form$fnum\")' ");
676: if ($hash{'store_'.$filelink}) {
677: $r->print("checked");
678: }
679: $r->print(">\n");
680: $r->print("<input type='hidden' name='title"."' ".
681: "value='$title'>\n");
682: $r->print("</form>\n");
683: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
684: $hash{"pre_${fnum}_link"}=$filelink;
685: $hash{"pre_${fnum}_title"}=$title;
686: $fnum++;
687: }
688:
689: if ($indent > 0 and $indent < 11) {
690: $r->print("<img src=",$iconpath,"whitespace",$indent,
691: ".gif border='0' />\n");
692: } elsif ($indent >0) {
693: my $ten = int($indent/10.);
694: my $rem = $indent%10.0;
695: my $count = 0;
696: while ($count < $ten) {
697: $r->print("<img src=",$iconpath,
698: "whitespace10.gif border='0' />\n");
699: $count++;
700: }
701: $r->print("<img src=",$iconpath,"whitespace",$rem,
702: ".gif border='0' />\n") if $rem > 0;
703: }
704:
705: $r->print("<img src=$iconpath$iconname border='0' />\n");
706: $r->print (" <a href=\"javascript:openWindow('".$filelink.
707: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
708: " TARGET=_self>$listname</a> ");
709:
710: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
711: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
712: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
713:
714: $r->print("</td>\n");
715: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
716: $filecom[8]," </td>\n")
717: if $hash{'display_attrs_0'} == 1;
718: $r->print("<td bgcolor=$fileclr valign=bottom> ".
719: (localtime($filecom[9]))." </td>\n")
720: if $hash{'display_attrs_1'} == 1;
721: $r->print("<td bgcolor=$fileclr valign=bottom> ".
722: (localtime($filecom[10]))." </td>\n")
723: if $hash{'display_attrs_2'} == 1;
724:
725: if ($hash{'display_attrs_3'} == 1) {
726: my $author = &Apache::lonnet::metadata($filelink,'author')
727: if ($metafile == 1);
728: $author = ' ' if (!$author);
729: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
730: " </td>\n");
731: }
732: if ($hash{'display_attrs_4'} == 1) {
733: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
734: if ($metafile == 1);
735: $keywords = ' ' if (!$keywords);
736: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
737: " </td>\n");
738: }
739: if ($hash{'display_attrs_5'} == 1) {
740: my $lang = &Apache::lonnet::metadata($filelink,'language')
741: if ($metafile == 1);
742: $lang = &Apache::loncommon::languagedescription($lang);
743: $lang = ' ' if (!$lang);
744: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
745: " </td>\n");
746: }
747: $r->print("</tr>\n");
748: }
749:
750: # -- display directory
751: if ($fnptr == $dirptr) {
752: my @file_ext = split (/\./,$listname);
753: my $curfext = $file_ext[scalar(@file_ext)-1];
754: my $curdir = $startdir.$filecom[0].'/';
755: my $anchor = $curdir;
756: $anchor =~ s/\///g;
757: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
758: &begin_form ($r,$curdir);
759: my $indentm1 = $indent-1;
760: if ($indentm1 < 11 and $indentm1 > 0) {
761: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
762: ".gif border='0' />\n");
763: } else {
764: my $ten = int($indentm1/10.);
765: my $rem = $indentm1%10.0;
766: my $count = 0;
767: while ($count < $ten) {
768: $r->print ("<img src=",$iconpath
769: ,"whitespace10.gif border='0' />\n");
770: $count++;
771: }
772: $r->print ("<img src=",$iconpath,"whitespace",$rem,
773: ".gif border='0' />\n") if $rem > 0;
774: }
775: $r->print ('<input type="hidden" name="acts" value="">');
776: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
777: 'folder_pointer_'.$diropen.'.gif"');
778: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
779: "\n");
780: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
781: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
782: "\n");
783: $r->print ("$listname$tabtag</tr></form>\n");
784: }
785:
786: }
787:
788: # ------------------- prints the beginning of a form for directory or file link
789: sub begin_form {
790: my ($r,$uri) = @_;
791: my $anchor = $uri;
792: $anchor =~ s/\///g;
793: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
794: '#'.$anchor.
795: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
796: ',document.forms.fileattr.acts.value)" '.
797: 'enctype="application/x-www-form-urlencoded">'."\n");
798: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
799: "\n");
800: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
801: $dnum++;
802: }
803:
804: # --------- settings whenever the user causes the indexer window to be launched
805: sub start_fresh_session {
806: delete $hash{'mode_catalog'};
807: delete $hash{'form_mode'};
808: delete $hash{'form_form'};
809: delete $hash{'form_element'};
810: foreach (keys %hash) {
811: if ($_ =~ /^pre_/) {
812: delete $hash{$_};
813: }
814: if ($_ =~ /^store/) {
815: delete $hash{$_};
816: }
817: }
818: }
819:
820: # ------------------------------------------------------------------- setvalues
821: sub setvalues {
822: # setvalues is used in registerurl to synchronize the database
823: # hash and environment hashes
824: my ($H1,$h1key,$H2,$h2key) =@_;
825: #
826: if (exists $H2->{$h2key}) {
827: $H1->{$h1key} = $H2->{$h2key};
828: } elsif (exists $H1->{$h1key}) {
829: $H2->{$h2key} = $H1->{$h1key};
830: }
831: }
832:
833: 1;
834:
835: =head1 NAME
836:
837: Apache::lonindexer - mod_perl module for cross server filesystem browsing
838:
839: =head1 SYNOPSIS
840:
841: Invoked by /etc/httpd/conf/srm.conf:
842:
843: <LocationMatch "^/res.*/$">
844: SetHandler perl-script
845: PerlHandler Apache::lonindexer
846: </LocationMatch>
847:
848: =head1 INTRODUCTION
849:
850: This module enables a scheme of browsing across a cross server.
851:
852: This is part of the LearningOnline Network with CAPA project
853: described at http://www.lon-capa.org.
854:
855: =head1 BEGIN SUBROUTINE
856:
857: This routine is only run once after compilation.
858:
859: =over 4
860:
861: =item *
862:
863: Initializes %language hash table.
864:
865: =back
866:
867: =head1 HANDLER SUBROUTINE
868:
869: This routine is called by Apache and mod_perl.
870:
871: =over 4
872:
873: =item *
874:
875: read in machine configuration variables
876:
877: =item *
878:
879: see if called from an interactive mode
880:
881: =item *
882:
883: refresh environment with user database values (in %hash)
884:
885: =item *
886:
887: define extra fields and buttons in case of special mode
888:
889: =item *
890:
891: set catalogmodefunctions to have extra needed javascript functionality
892:
893: =item *
894:
895: print header
896:
897: =item *
898:
899: evaluate actions from previous page (both cumulatively and chronologically)
900:
901: =item *
902:
903: output title
904:
905: =item *
906:
907: get state of file attributes to be showing
908:
909: =item *
910:
911: output state of file attributes to be showing
912:
913: =item *
914:
915: output starting row to the indexed file/directory hierarchy
916:
917: =item *
918:
919: read in what directories have previously been set to "open"
920:
921: =item *
922:
923: if not at top level, provide an uplink arrow
924:
925: =item *
926:
927: recursively go through all the directories and output as appropriate
928:
929: =item *
930:
931: information useful for group import
932:
933: =item *
934:
935: end the tables
936:
937: =item *
938:
939: end the output and return
940:
941: =back
942:
943: =head1 OTHER SUBROUTINES
944:
945: =over 4
946:
947: =item *
948:
949: scanDir - recursive scan of a directory
950:
951: =item *
952:
953: get_list - get complete matched list based on the uri (returns an array)
954:
955: =item *
956:
957: match_ext - filters out files based on extensions (returns an array)
958:
959: =item *
960:
961: display_line - displays one line in appropriate table format
962:
963: =item *
964:
965: begin_form - prints the beginning of a form for directory or file link
966:
967: =item *
968:
969: start_fresh_session - settings whenever the user causes the indexer window
970: to be launched
971:
972: =back
973:
974: =cut
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