1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.40 2002/03/25 19:27:17 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: # ----- Used to include or exclude files with certain extensions.
84: my @Only = ();
85: my @Omit = ();
86:
87:
88: # ----------------------------- Handling routine called via Apache and mod_perl
89: sub handler {
90: my $r = shift;
91: $r->content_type('text/html');
92: $r->send_http_header;
93: return OK if $r->header_only;
94: $fnum=0;
95: $dnum=0;
96: untie %hash;
97:
98: # ------------------------------------- read in machine configuration variables
99: my $iconpath= $r->dir_config('lonIconsURL') . "/";
100: my $domain = $r->dir_config('lonDefDomain');
101: my $role = $r->dir_config('lonRole');
102: my $loadlim = $r->dir_config('lonLoadLim');
103: my $servadm = $r->dir_config('lonAdmEMail');
104: my $sysadm = $r->dir_config('lonSysEMail');
105: my $lonhost = $r->dir_config('lonHostID');
106: my $tabdir = $r->dir_config('lonTabDir');
107:
108: my $fileclr='#ffffe6';
109: my $line;
110: my (@attrchk,@openpath);
111: my $uri=$r->uri;
112:
113: # -------------------------------------- see if called from an interactive mode
114: # Get the parameters from the query string
115: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
116: ['catalogmode','launch','acts','mode','form','element',
117: 'only','omit']);
118: #-------------------------------------------------------------------
119: my $closebutton='';
120: my $groupimportbutton='';
121: my $colspan='';
122:
123: $extrafield='';
124: my $diropendb =
125: "/home/httpd/perl/tmp/$domain\_$ENV{'user.name'}_indexer.db";
126:
127: if (tie(%hash,'GDBM_File',$diropendb,&GDBM_WRCREAT,0640)) {
128: if ($ENV{'form.launch'} eq '1') {
129: &start_fresh_session();
130: }
131:
132: # -------------------- refresh environment with user database values (in %hash)
133: if ($hash{'mode_catalog'} eq 'interactive') {
134: $ENV{'form.catalogmode'}='interactive';
135: }
136: if ($hash{'mode_catalog'} eq 'groupimport') {
137: $ENV{'form.catalogmode'}='groupimport';
138: }
139:
140: # --------------------- define extra fields and buttons in case of special mode
141: if ($ENV{'form.catalogmode'} eq 'interactive') {
142: $hash{'mode_catalog'}='interactive';
143: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
144: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
145: ' border="0" /></td>';
146: $colspan=" colspan='2' ";
147: $closebutton=<<END;
148: <input type="button" name="close" value='CLOSE' onClick="self.close()">
149: END
150: }
151: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
152: $hash{'mode_catalog'}='groupimport';
153: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
154: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
155: ' border="0" /></td>';
156: $colspan=" colspan='2' ";
157: $closebutton=<<END;
158: <input type="button" name="close" value='CLOSE' onClick="self.close()">
159: END
160: $groupimportbutton=<<END;
161: <input type="button" name="groupimport" value='GROUP IMPORT'
162: onClick="javascript:select_group()">
163: END
164: }
165: # Additions made by Matthew to make the browser a little easier to deal
166: # with in the future.
167: #
168: # $mode (at this time) indicates if we are in edit mode.
169: # $form is the name of the form that the URL is placed when the
170: # selection is made.
171: # $element is the name of the element in $formname which receives
172: # the URL.
173: # &Apache::lonxml::debug('Checking mode, form, element');
174: &setvalues(\%hash,'form_mode' ,\%ENV,'form.mode' );
175: &setvalues(\%hash,'form_form' ,\%ENV,'form.form' );
176: &setvalues(\%hash,'form_element',\%ENV,'form.element');
177: &setvalues(\%hash,'form_only' ,\%ENV,'form.only' );
178: &setvalues(\%hash,'form_omit' ,\%ENV,'form.omit' );
179:
180: # Deal with 'omit' and 'only'
181: if (exists $ENV{'form.omit'}) {
182: @Omit = split(',',$ENV{'form.omit'});
183: }
184: if (exists $ENV{'form.only'}) {
185: @Only = split(',',$ENV{'form.only'});
186: }
187:
188: my $mode = $ENV{'form.mode'};
189: my ($form,$element);
190: if ($mode eq 'edit' || $mode eq 'parmset') {
191: $form = $ENV{'form.form'};
192: $element = $ENV{'form.element'};
193: }
194: &Apache::lonxml::debug("mode=$mode form=$form element=$element");
195: # ------ set catalogmodefunctions to have extra needed javascript functionality
196: my $catalogmodefunctions='';
197: if ($ENV{'form.catalogmode'} eq 'interactive' or
198: $ENV{'form.catalogmode'} eq 'groupimport') {
199: # The if statement below sets us up to use the old version
200: # by default (ie. if $mode is undefined). This is the easy
201: # way out. Hopefully in the future I'll find a way to get
202: # the calls dealt with in a more comprehensive manner.
203: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
204: my $location = "/adm/groupsort?catalogmode=groupimport&";
205: $location .= "acts=";
206: $catalogmodefunctions=<<"END";
207: function select_data(title,url) {
208: changeTitle(title);
209: changeURL(url);
210: self.close();
211: }
212: function select_group() {
213: window.location="$location"+document.forms.fileattr.acts.value;
214: }
215: function changeTitle(val) {
216: if (opener.inf) {
217: if (opener.inf.document.forms.resinfo.elements.t) {
218: opener.inf.document.forms.resinfo.elements.t.value=val;
219: }
220: }
221: }
222: function changeURL(val) {
223: if (opener.inf) {
224: if (opener.inf.document.forms.resinfo.elements.u) {
225: opener.inf.document.forms.resinfo.elements.u.value=val;
226: }
227: }
228: }
229: END
230: } elsif ($mode eq 'edit') { # we are in 'edit' mode
231: my $location = "/adm/groupsort?catalogmode=interactive&";
232: $location .= "form=$form&element=$element&mode=edit&acts=";
233: $catalogmodefunctions=<<END;
234: // mode = $mode
235: function select_data(title,url) {
236: changeURL(url);
237: self.close();
238: }
239:
240: function select_group() {
241: window.location="$location"+document.forms.fileattr.acts.value;
242: }
243:
244: function changeURL(val) {
245: if (window.opener.document) {
246: window.opener.document.forms["$form"].elements["$element"].value=val;
247: } else {
248: alert("The file you selected is: "+val);
249: }
250: }
251:
252: END
253: } elsif ($mode eq 'parmset') {
254: my $location = "/adm/groupsort?catalogmode=interactive&";
255: $location .= "form=$form&element=$element&mode=parmset&acts=";
256: $catalogmodefunctions=<<END;
257: // mode = $mode
258: function select_data(title,url) {
259: changeURL(url);
260: self.close();
261: }
262:
263: function select_group() {
264: window.location="$location"+document.forms.fileattr.acts.value;
265: }
266:
267: function changeURL(val) {
268: if (window.opener.document) {
269: var elementname = "$element"+"_value";
270: var checkboxname = "$element"+"_setparmval";
271: window.opener.document.forms["$form"].elements[elementname].value=val;
272: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
273: } else {
274: alert("The file you selected is: "+val);
275: }
276: }
277:
278: END
279: }
280: }
281: $catalogmodefunctions.=<<END;
282: var acts='';
283: function rep_dirpath(suffix,val) {
284: eval("document.forms.dirpath"+suffix+".acts.value=val");
285: }
286: END
287: if ($ENV{'form.catalogmode'} eq 'groupimport') {
288: $catalogmodefunctions.=<<END;
289: function queue(val) {
290: if (eval("document.forms."+val+".filelink.checked")) {
291: var l=val.length;
292: var v=val.substring(4,l);
293: document.forms.fileattr.acts.value+='1a'+v+'b';
294: }
295: else {
296: var l=val.length;
297: var v=val.substring(4,l);
298: document.forms.fileattr.acts.value+='0a'+v+'b';
299: }
300: }
301: END
302: }
303:
304: # ---------------------------------------------------------------- Print Header
305: $r->print(<<ENDHEADER);
306: <html>
307: <head>
308: <title>The LearningOnline Network With CAPA Directory Browser</title>
309:
310: <script type="text/javascript">
311: $catalogmodefunctions
312: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
313: var options = "width=" + w + ",height=" + h + ",";
314: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
315: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
316: var newWin = window.open(url, wdwName, options);
317: newWin.focus();
318: }
319: function gothere(val) {
320: window.location=val+'?acts='+document.forms.fileattr.acts.value;
321: }
322: </script>
323:
324: </head>
325: <body bgcolor="#FFFFFF">
326: ENDHEADER
327:
328: # - Evaluate actions from previous page (both cumulatively and chronologically)
329: if ($ENV{'form.catalogmode'} eq 'groupimport') {
330: my $acts=$ENV{'form.acts'};
331: my @Acts=split(/b/,$acts);
332: my %ahash;
333: my %achash;
334: my $ac=0;
335: # some initial hashes for working with data
336: foreach (@Acts) {
337: my ($state,$ref)=split(/a/);
338: $ahash{$ref}=$state;
339: $achash{$ref}=$ac;
340: $ac++;
341: }
342: # sorting through the actions and changing the tied database hash
343: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
344: my $key=$_;
345: if ($ahash{$key} eq '1') {
346: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
347: $hash{'pre_'.$key.'_title'};
348: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
349: $hash{'storectr'}+0;
350: $hash{'storectr'}++;
351: }
352: if ($ahash{$key} eq '0') {
353: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
354: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
355: }
356: }
357: }
358: # deleting the previously cached listing
359: foreach (keys %hash) {
360: if ($_ =~ /^pre_/ && $_ =~/link$/) {
361: my $key = $_;
362: $key =~ s/^pre_//;
363: $key =~ s/_[^_]*$//;
364: delete $hash{'pre_'.$key.'_title'};
365: delete $hash{'pre_'.$key.'_link'};
366: }
367: }
368: }
369:
370: # ---------------------------------------------------------------- output title
371: $r->print('<h2><font color="#888888">The LearningOnline With CAPA '.
372: 'Network Directory Browser</font></h2>'."\n");
373: # ---------------------------------- get state of file attributes to be showing
374: if ($ENV{'form.attrs'} ne "") {
375: for (my $i=0; $i<=6; $i++) {
376: delete $hash{'display_attrs_'.$i};
377: if ($ENV{'form.attr'.$i} == 1) {
378: $attrchk[$i] = "checked";
379: $hash{'display_attrs_'.$i} = 1;
380: }
381: }
382: } else {
383: for (my $i=0; $i<=6; $i++) {
384: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
385: }
386: }
387: # ------------------------------- output state of file attributes to be showing
388: $r->print(<<END);
389: <b><font color="#666666">Display file attributes</font></b><br />
390: <form method="post" name="fileattr" action="$uri"
391: enctype="application/x-www-form-urlencoded">
392: <table border=0><tr>
393: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
394: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
395: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
396: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
397: </tr><tr>
398: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
399: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
400: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
401: <td> </td>
402: </tr></table>
403: <input type="hidden" name="dirPointer" value="on" />
404: <input type="hidden" name="acts" value="" />
405: <input type="submit" name="attrs" value="Review" />
406: <input type="submit" name="attrs" value="Refresh" />
407: $closebutton
408: $groupimportbutton
409: </form>
410: END
411:
412: # ----------------- output starting row to the indexed file/directory hierarchy
413: my $titleclr="#ddffff";
414: # $r->print(&initdebug());
415: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
416: # $r->print(&writedebug("Only:@Only")) if (@Only);
417: $r->print("<table width='100\%' border=0><tr><td bgcolor=#eeeeee>\n");
418: $r->print("<table width='100\%' border=0><tr>\n");
419: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
420: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
421: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
422: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
423: if ($hash{'display_attrs_1'} == 1);
424: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
425: if ($hash{'display_attrs_2'} == 1);
426: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
427: if ($hash{'display_attrs_3'} == 1);
428: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
429: if ($hash{'display_attrs_4'} == 1);
430: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
431: if ($hash{'display_attrs_5'} == 1);
432: $r->print("</tr>");
433:
434: # ----------------- read in what directories have previously been set to "open"
435: foreach (keys %hash) {
436: if ($_ =~ /^diropen_status_/) {
437: my $key = $_;
438: $key =~ s/^diropen_status_//;
439: $dirs{$key} = $hash{$_};
440: }
441: }
442:
443: if ($ENV{'form.openuri'}) { # take care of review and refresh options
444: my $uri=$ENV{'form.openuri'};
445: if (exists($hash{'diropen_status_'.$uri})) {
446: my $cursta = $hash{'diropen_status_'.$uri};
447: $dirs{$uri} = 'open';
448: $hash{'diropen_status_'.$uri} = 'open';
449: if ($cursta eq 'open') {
450: $dirs{$uri} = 'closed';
451: $hash{'diropen_status_'.$uri} = 'closed';
452: }
453: } else {
454: $hash{'diropen_status_'.$uri} = 'open';
455: $dirs{$uri} = 'open';
456: }
457: }
458:
459: my $bredir = $ENV{'form.dirPointer'};
460: my $toplevel;
461: my $indent = 0;
462: $uri = $uri.'/' if $uri !~ /.*\/$/;
463:
464: if ($bredir ne "on") {
465: $hash{'top.level'} = $uri;
466: $toplevel = $uri;
467:
468: } else {
469: $toplevel = $hash{'top.level'};
470: }
471:
472: # -------------------------------- if not at top level, provide an uplink arrow
473: if ($toplevel ne "/res/"){
474: my (@uri_com) = split(/\//,$uri);
475: pop @uri_com;
476: my $upone = join('/',@uri_com);
477: my @list = qw (0);
478: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
479: $indent = 1;
480: }
481:
482: # -------- recursively go through all the directories and output as appropriate
483: &scanDir ($r,$toplevel,$indent,\%hash);
484:
485: # ---------------------------- embed hidden information useful for group import
486: $r->print("<form name='fnum'>");
487: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
488:
489: # -------------------------------------------------------------- end the tables
490: $r->print("</table>");
491: $r->print("</td></tr></table>");
492:
493: # --------------------------------------------------- end the output and return
494: $r->print("</body></html>\n");
495: untie(%hash);
496: } else {
497: $r->print('<html><head></head><body>Unable to tie hash to db '.
498: 'file</body></html>');
499: return OK;
500: }
501: return OK;
502: }
503:
504: # ----------------------------------------------- recursive scan of a directory
505: sub scanDir {
506: my ($r,$startdir,$indent,$hashref)=@_;
507: my ($compuri,$curdir);
508: my $dirptr=16384;
509: $indent++;
510:
511: my %dupdirs = %dirs;
512: my @list=&get_list($r,$startdir);
513: foreach my $line (@list) {
514: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
515: next if $strip =~ /.*\.meta$/;
516: my (@fileparts) = split(/\./,$strip);
517: if ($hash{'display_attrs_6'} != 1) {
518: if (scalar(@fileparts) >= 3) {
519: my $fext = pop @fileparts;
520: my $ov = pop @fileparts;
521: my $fname = join ('.',@fileparts,$fext);
522: next if (grep /$fname/,@list and $ov =~ /\d+/);
523: }
524: }
525:
526: if ($dom eq "domain") {
527: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
528: $curdir = $compuri;
529: } else {
530: # user, dir & file have name only, i.e., w/o path
531: $compuri = join('',$startdir,$strip,"/");
532: $curdir = $startdir;
533: }
534: my $diropen = "closed";
535: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
536: while (my ($key,$val)= each %dupdirs) {
537: if ($key eq $compuri and $val eq "open") {
538: $diropen = "opened";
539: delete $dupdirs{key},$dirs{$key};
540: }
541: }
542: }
543: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
544: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
545: }
546: $indent--;
547: }
548:
549: # --------------- get complete matched list based on the uri (returns an array)
550: sub get_list {
551: my ($r,$uri)=@_;
552: my @list;
553: my $luri = $uri;
554: $luri =~ s/\//_/g;
555:
556: if ($ENV{'form.attrs'} eq "Refresh") {
557: foreach (keys %hash) {
558: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
559: }
560: }
561:
562: if ($hash{'dirlist_files'.$luri}) {
563: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
564: } else {
565: @list = &Apache::lonnet::dirlist($uri);
566: $hash{'dirlist_files_'.$luri} = join('\n',@list);
567: }
568: return @list=&match_ext($r,@list);
569: }
570:
571: sub initdebug {
572: return <<ENDJS;
573: <script>
574: var debugging = true;
575: if (debugging) {
576: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
577: }
578:
579: function output(text) {
580: if (debugging) {
581: debuggingWindow.document.writeln(text);
582: }
583: }
584: output("<html><head><title>Debugging Window</title></head><body><pre>");
585: </script>
586: ENDJS
587: }
588:
589: sub writedebug {
590: my $text = shift;
591: return "<script>output('$text');</script>";
592: }
593:
594: # -------------------- filters out files based on extensions (returns an array)
595: sub match_ext {
596: my ($r,@packlist)=@_;
597: my @trimlist;
598: my $nextline;
599: my @fileext;
600: my $dirptr=16384;
601:
602: foreach my $line (@packlist) {
603: chomp $line;
604: $line =~ s/^\/home\/httpd\/html//;
605: my @unpackline = split (/\&/,$line);
606: next if ($unpackline[0] eq ".");
607: next if ($unpackline[0] eq "..");
608: my @filecom = split (/\./,$unpackline[0]);
609: my $fext = pop(@filecom);
610: my $fnptr = $unpackline[3]&$dirptr;
611: if ($fnptr == 0 and $unpackline[3] ne "") {
612: my $embstyle = &Apache::loncommon::fileembstyle($fext);
613: push @trimlist,$line if (defined($embstyle) &&
614: ($embstyle ne 'hdn' or $fext eq 'meta'));
615: } else {
616: push @trimlist,$line;
617: }
618: }
619: @trimlist = sort (@trimlist);
620: return @trimlist;
621: }
622:
623: # ------------------------------- displays one line in appropriate table format
624: sub display_line {
625: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
626: my (@pathfn, $fndir, $fnptr);
627: my $dirptr=16384;
628: my $fileclr="#ffffe6";
629: my $iconpath= $r->dir_config('lonIconsURL') . "/";
630:
631: my @filecom = split (/\&/,$line);
632: my @pathcom = split (/\//,$filecom[0]);
633: my $listname = $pathcom[scalar(@pathcom)-1];
634: my $fnptr = $filecom[3]&$dirptr;
635: my $msg = 'View '.$filecom[0].' resources';
636: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
637:
638: my $tabtag="</td>";
639: my $i=0;
640:
641: while ($i<=5) {
642: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
643: if $hash{'display_attrs_'.$i} == 1;
644: $i++;
645: }
646:
647: # display uplink arrow
648: if ($filecom[1] eq "viewOneUp") {
649: $r->print("<tr>$extrafield");
650: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
651: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
652: '/" '.
653: 'onSubmit="return rep_dirpath(\'UP\','.
654: 'document.forms.fileattr.acts.value)" '.
655: 'enctype="application/x-www-form-urlencoded"'.
656: '>'."\n");
657: $r->print ('<input type=hidden name=openuri value="'.
658: $startdir.'">'."\n");
659: $r->print ('<input type="hidden" name="acts" value="">'."\n");
660: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
661: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
662: "\n");
663: $r->print("Up $tabtag</tr></form>\n");
664: return OK;
665: }
666:
667: # display domain
668: if ($filecom[1] eq "domain") {
669: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
670: if ($ENV{'form.dirPointer'} eq "on");
671: $r->print("<tr>$extrafield");
672: $r->print("<td bgcolor=$fileclr valign=bottom>");
673: &begin_form ($r,$filecom[0].'/');
674: my $anchor = $filecom[0].'/';
675: $anchor =~ s/\///g;
676: $r->print ('<a name="'.$anchor.'">');
677: $r->print ('<input type="hidden" name="acts" value="">');
678: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
679: $diropen.'.gif"');
680: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
681: "\n");
682: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
683: '/\')"><img src="'.$iconpath.'server.gif"');
684: $r->print (' border="0" /></a>'."\n");
685: $r->print("Domain - $listname $tabtag</tr></form>\n");
686: return OK;
687:
688: # display user directory
689: }
690: if ($filecom[1] eq "user") {
691: $r->print("<tr>$extrafield");
692: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
693: my $curdir = $startdir.$filecom[0].'/';
694: my $anchor = $curdir;
695: $anchor =~ s/\///g;
696: &begin_form ($r,$curdir);
697: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
698: 'whitespace1.gif" border="0" />'."\n");
699: $r->print ('<input type="hidden" name="acts" value="">');
700: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
701: '.gif"');
702: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
703: "\n");
704: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
705: $iconpath.'quill.gif border="0" name="'.$msg.
706: '" height="22" /></a>');
707: $r->print ($listname.$tabtag.'</tr></form>'."\n");
708: return OK;
709: }
710:
711: # display file
712: if ($fnptr == 0 and $filecom[3] ne "") {
713: my @file_ext = split (/\./,$listname);
714: my $curfext = $file_ext[-1];
715: if (@Omit) {
716: foreach (@Omit) { return OK if ($curfext eq $_); }
717: }
718: if (@Only) {
719: my $skip = 1;
720: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
721: return OK if ($skip > 0);
722: }
723: # Set the icon for the file
724: my $iconname = "unknown.gif";
725: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
726: # The unless conditional that follows is a bit of overkill
727: $iconname = $curfext.".gif" unless
728: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
729: #
730: my $filelink = $startdir.$filecom[0];
731: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
732: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
733: my $title;
734: if ($ENV{'form.catalogmode'} eq 'interactive') {
735: $title=$listname;
736: $title = &Apache::lonnet::metadata($filelink,'title')
737: if ($metafile == 1);
738: $title=$listname unless $title;
739: my $titleesc=$title;
740: $titleesc=~s/\'/\\'/; #' (clean up this spare quote
741: $r->print("<a href=\"javascript:select_data(\'",
742: $titleesc,"','",$filelink,"')\">");
743: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
744: "\n");
745: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
746: }
747: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
748: $title=$listname;
749: $title = &Apache::lonnet::metadata($filelink,'title')
750: if ($metafile == 1);
751: $title=$listname unless $title;
752: $r->print("<form name='form$fnum'>\n");
753: $r->print("<input type='checkbox' name='filelink"."' ".
754: "value='$filelink' onClick='".
755: "javascript:queue(\"form$fnum\")' ");
756: if ($hash{'store_'.$filelink}) {
757: $r->print("checked");
758: }
759: $r->print(">\n");
760: $r->print("<input type='hidden' name='title"."' ".
761: "value='$title'>\n");
762: $r->print("</form>\n");
763: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
764: $hash{"pre_${fnum}_link"}=$filelink;
765: $hash{"pre_${fnum}_title"}=$title;
766: $fnum++;
767: }
768:
769: if ($indent > 0 and $indent < 11) {
770: $r->print("<img src=",$iconpath,"whitespace",$indent,
771: ".gif border='0' />\n");
772: } elsif ($indent >0) {
773: my $ten = int($indent/10.);
774: my $rem = $indent%10.0;
775: my $count = 0;
776: while ($count < $ten) {
777: $r->print("<img src=",$iconpath,
778: "whitespace10.gif border='0' />\n");
779: $count++;
780: }
781: $r->print("<img src=",$iconpath,"whitespace",$rem,
782: ".gif border='0' />\n") if $rem > 0;
783: }
784:
785: $r->print("<img src=$iconpath$iconname border='0' />\n");
786: $r->print (" <a href=\"javascript:openWindow('".$filelink.
787: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
788: " TARGET=_self>$listname</a> ");
789:
790: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
791: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
792: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
793:
794: $r->print("</td>\n");
795: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
796: $filecom[8]," </td>\n")
797: if $hash{'display_attrs_0'} == 1;
798: $r->print("<td bgcolor=$fileclr valign=bottom> ".
799: (localtime($filecom[9]))." </td>\n")
800: if $hash{'display_attrs_1'} == 1;
801: $r->print("<td bgcolor=$fileclr valign=bottom> ".
802: (localtime($filecom[10]))." </td>\n")
803: if $hash{'display_attrs_2'} == 1;
804:
805: if ($hash{'display_attrs_3'} == 1) {
806: my $author = &Apache::lonnet::metadata($filelink,'author')
807: if ($metafile == 1);
808: $author = ' ' if (!$author);
809: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
810: " </td>\n");
811: }
812: if ($hash{'display_attrs_4'} == 1) {
813: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
814: if ($metafile == 1);
815: $keywords = ' ' if (!$keywords);
816: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
817: " </td>\n");
818: }
819: if ($hash{'display_attrs_5'} == 1) {
820: my $lang = &Apache::lonnet::metadata($filelink,'language')
821: if ($metafile == 1);
822: $lang = &Apache::loncommon::languagedescription($lang);
823: $lang = ' ' if (!$lang);
824: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
825: " </td>\n");
826: }
827: $r->print("</tr>\n");
828: }
829:
830: # -- display directory
831: if ($fnptr == $dirptr) {
832: my @file_ext = split (/\./,$listname);
833: my $curfext = $file_ext[scalar(@file_ext)-1];
834: my $curdir = $startdir.$filecom[0].'/';
835: my $anchor = $curdir;
836: $anchor =~ s/\///g;
837: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
838: &begin_form ($r,$curdir);
839: my $indentm1 = $indent-1;
840: if ($indentm1 < 11 and $indentm1 > 0) {
841: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
842: ".gif border='0' />\n");
843: } else {
844: my $ten = int($indentm1/10.);
845: my $rem = $indentm1%10.0;
846: my $count = 0;
847: while ($count < $ten) {
848: $r->print ("<img src=",$iconpath
849: ,"whitespace10.gif border='0' />\n");
850: $count++;
851: }
852: $r->print ("<img src=",$iconpath,"whitespace",$rem,
853: ".gif border='0' />\n") if $rem > 0;
854: }
855: $r->print ('<input type="hidden" name="acts" value="">');
856: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
857: 'folder_pointer_'.$diropen.'.gif"');
858: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
859: "\n");
860: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
861: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
862: "\n");
863: $r->print ("$listname$tabtag</tr></form>\n");
864: }
865:
866: }
867:
868: # ------------------- prints the beginning of a form for directory or file link
869: sub begin_form {
870: my ($r,$uri) = @_;
871: my $anchor = $uri;
872: $anchor =~ s/\///g;
873: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
874: '#'.$anchor.
875: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
876: ',document.forms.fileattr.acts.value)" '.
877: 'enctype="application/x-www-form-urlencoded">'."\n");
878: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
879: "\n");
880: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
881: $dnum++;
882: }
883:
884: # --------- settings whenever the user causes the indexer window to be launched
885: sub start_fresh_session {
886: delete $hash{'mode_catalog'};
887: delete $hash{'form_mode'};
888: delete $hash{'form_form'};
889: delete $hash{'form_element'};
890: delete $hash{'form_omit'};
891: delete $hash{'form_only'};
892: foreach (keys %hash) {
893: if ($_ =~ /^pre_/) {
894: delete $hash{$_};
895: }
896: if ($_ =~ /^store/) {
897: delete $hash{$_};
898: }
899: }
900: }
901:
902: # ------------------------------------------------------------------- setvalues
903: sub setvalues {
904: # setvalues is used in registerurl to synchronize the database
905: # hash and environment hashes
906: my ($H1,$h1key,$H2,$h2key) =@_;
907: #
908: if (exists $H2->{$h2key}) {
909: $H1->{$h1key} = $H2->{$h2key};
910: } elsif (exists $H1->{$h1key}) {
911: $H2->{$h2key} = $H1->{$h1key};
912: }
913: }
914:
915: 1;
916:
917: =head1 NAME
918:
919: Apache::lonindexer - mod_perl module for cross server filesystem browsing
920:
921: =head1 SYNOPSIS
922:
923: Invoked by /etc/httpd/conf/srm.conf:
924:
925: <LocationMatch "^/res.*/$">
926: SetHandler perl-script
927: PerlHandler Apache::lonindexer
928: </LocationMatch>
929:
930: =head1 INTRODUCTION
931:
932: This module enables a scheme of browsing across a cross server.
933:
934: This is part of the LearningOnline Network with CAPA project
935: described at http://www.lon-capa.org.
936:
937: =head1 BEGIN SUBROUTINE
938:
939: This routine is only run once after compilation.
940:
941: =over 4
942:
943: =item *
944:
945: Initializes %language hash table.
946:
947: =back
948:
949: =head1 HANDLER SUBROUTINE
950:
951: This routine is called by Apache and mod_perl.
952:
953: =over 4
954:
955: =item *
956:
957: read in machine configuration variables
958:
959: =item *
960:
961: see if called from an interactive mode
962:
963: =item *
964:
965: refresh environment with user database values (in %hash)
966:
967: =item *
968:
969: define extra fields and buttons in case of special mode
970:
971: =item *
972:
973: set catalogmodefunctions to have extra needed javascript functionality
974:
975: =item *
976:
977: print header
978:
979: =item *
980:
981: evaluate actions from previous page (both cumulatively and chronologically)
982:
983: =item *
984:
985: output title
986:
987: =item *
988:
989: get state of file attributes to be showing
990:
991: =item *
992:
993: output state of file attributes to be showing
994:
995: =item *
996:
997: output starting row to the indexed file/directory hierarchy
998:
999: =item *
1000:
1001: read in what directories have previously been set to "open"
1002:
1003: =item *
1004:
1005: if not at top level, provide an uplink arrow
1006:
1007: =item *
1008:
1009: recursively go through all the directories and output as appropriate
1010:
1011: =item *
1012:
1013: information useful for group import
1014:
1015: =item *
1016:
1017: end the tables
1018:
1019: =item *
1020:
1021: end the output and return
1022:
1023: =back
1024:
1025: =head1 OTHER SUBROUTINES
1026:
1027: =over 4
1028:
1029: =item *
1030:
1031: scanDir - recursive scan of a directory
1032:
1033: =item *
1034:
1035: get_list - get complete matched list based on the uri (returns an array)
1036:
1037: =item *
1038:
1039: match_ext - filters out files based on extensions (returns an array)
1040:
1041: =item *
1042:
1043: display_line - displays one line in appropriate table format
1044:
1045: =item *
1046:
1047: begin_form - prints the beginning of a form for directory or file link
1048:
1049: =item *
1050:
1051: start_fresh_session - settings whenever the user causes the indexer window
1052: to be launched
1053:
1054: =back
1055:
1056: =cut
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