1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.41 2002/05/09 23:01:41 www 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 $mode is undefined). This is the easy
201: # way out. Hopefully in the future I'll find a way to get
202: # the calls dealt with in a more comprehensive manner.
203:
204: #
205: # There is now also mode "simple", which is for the simple version of the rat
206: #
207: #
208: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
209: my $location = "/adm/groupsort?catalogmode=groupimport&";
210: $location .= "mode=".$mode."&";
211: $location .= "acts=";
212: $catalogmodefunctions=<<"END";
213: function select_data(title,url) {
214: changeTitle(title);
215: changeURL(url);
216: self.close();
217: }
218: function select_group() {
219: window.location="$location"+document.forms.fileattr.acts.value;
220: }
221: function changeTitle(val) {
222: if (opener.inf) {
223: if (opener.inf.document.forms.resinfo.elements.t) {
224: opener.inf.document.forms.resinfo.elements.t.value=val;
225: }
226: }
227: }
228: function changeURL(val) {
229: if (opener.inf) {
230: if (opener.inf.document.forms.resinfo.elements.u) {
231: opener.inf.document.forms.resinfo.elements.u.value=val;
232: }
233: }
234: }
235: END
236: } elsif ($mode eq 'edit') { # we are in 'edit' mode
237: my $location = "/adm/groupsort?catalogmode=interactive&";
238: $location .= "form=$form&element=$element&mode=edit&acts=";
239: $catalogmodefunctions=<<END;
240: // mode = $mode
241: function select_data(title,url) {
242: changeURL(url);
243: self.close();
244: }
245:
246: function select_group() {
247: window.location="$location"+document.forms.fileattr.acts.value;
248: }
249:
250: function changeURL(val) {
251: if (window.opener.document) {
252: window.opener.document.forms["$form"].elements["$element"].value=val;
253: } else {
254: alert("The file you selected is: "+val);
255: }
256: }
257:
258: END
259: } elsif ($mode eq 'parmset') {
260: my $location = "/adm/groupsort?catalogmode=interactive&";
261: $location .= "form=$form&element=$element&mode=parmset&acts=";
262: $catalogmodefunctions=<<END;
263: // mode = $mode
264: function select_data(title,url) {
265: changeURL(url);
266: self.close();
267: }
268:
269: function select_group() {
270: window.location="$location"+document.forms.fileattr.acts.value;
271: }
272:
273: function changeURL(val) {
274: if (window.opener.document) {
275: var elementname = "$element"+"_value";
276: var checkboxname = "$element"+"_setparmval";
277: window.opener.document.forms["$form"].elements[elementname].value=val;
278: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
279: } else {
280: alert("The file you selected is: "+val);
281: }
282: }
283:
284: END
285: }
286: }
287: $catalogmodefunctions.=<<END;
288: var acts='';
289: function rep_dirpath(suffix,val) {
290: eval("document.forms.dirpath"+suffix+".acts.value=val");
291: }
292: END
293: if ($ENV{'form.catalogmode'} eq 'groupimport') {
294: $catalogmodefunctions.=<<END;
295: function queue(val) {
296: if (eval("document.forms."+val+".filelink.checked")) {
297: var l=val.length;
298: var v=val.substring(4,l);
299: document.forms.fileattr.acts.value+='1a'+v+'b';
300: }
301: else {
302: var l=val.length;
303: var v=val.substring(4,l);
304: document.forms.fileattr.acts.value+='0a'+v+'b';
305: }
306: }
307: END
308: }
309:
310: # ---------------------------------------------------------------- Print Header
311: $r->print(<<ENDHEADER);
312: <html>
313: <head>
314: <title>The LearningOnline Network With CAPA Directory Browser</title>
315:
316: <script type="text/javascript">
317: $catalogmodefunctions
318: function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
319: var options = "width=" + w + ",height=" + h + ",";
320: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
321: options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
322: var newWin = window.open(url, wdwName, options);
323: newWin.focus();
324: }
325: function gothere(val) {
326: window.location=val+'?acts='+document.forms.fileattr.acts.value;
327: }
328: </script>
329:
330: </head>
331: <body bgcolor="#FFFFFF">
332: ENDHEADER
333:
334: # - Evaluate actions from previous page (both cumulatively and chronologically)
335: if ($ENV{'form.catalogmode'} eq 'groupimport') {
336: my $acts=$ENV{'form.acts'};
337: my @Acts=split(/b/,$acts);
338: my %ahash;
339: my %achash;
340: my $ac=0;
341: # some initial hashes for working with data
342: foreach (@Acts) {
343: my ($state,$ref)=split(/a/);
344: $ahash{$ref}=$state;
345: $achash{$ref}=$ac;
346: $ac++;
347: }
348: # sorting through the actions and changing the tied database hash
349: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
350: my $key=$_;
351: if ($ahash{$key} eq '1') {
352: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
353: $hash{'pre_'.$key.'_title'};
354: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
355: $hash{'storectr'}+0;
356: $hash{'storectr'}++;
357: }
358: if ($ahash{$key} eq '0') {
359: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
360: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
361: }
362: }
363: }
364: # deleting the previously cached listing
365: foreach (keys %hash) {
366: if ($_ =~ /^pre_/ && $_ =~/link$/) {
367: my $key = $_;
368: $key =~ s/^pre_//;
369: $key =~ s/_[^_]*$//;
370: delete $hash{'pre_'.$key.'_title'};
371: delete $hash{'pre_'.$key.'_link'};
372: }
373: }
374: }
375:
376: # ---------------------------------------------------------------- output title
377: $r->print(
378: '<h2><font color="#888888">The Learning<i>Online</i> Network with CAPA '.
379: 'Network Directory Browser</font></h2>'."\n");
380: # ---------------------------------- get state of file attributes to be showing
381: if ($ENV{'form.attrs'} ne "") {
382: for (my $i=0; $i<=6; $i++) {
383: delete $hash{'display_attrs_'.$i};
384: if ($ENV{'form.attr'.$i} == 1) {
385: $attrchk[$i] = "checked";
386: $hash{'display_attrs_'.$i} = 1;
387: }
388: }
389: } else {
390: for (my $i=0; $i<=6; $i++) {
391: $attrchk[$i] = "checked" if $hash{'display_attrs_'.$i} == 1;
392: }
393: }
394: # ------------------------------- output state of file attributes to be showing
395: $r->print(<<END);
396: <b><font color="#666666">Display file attributes</font></b><br />
397: <form method="post" name="fileattr" action="$uri"
398: enctype="application/x-www-form-urlencoded">
399: <table border=0><tr>
400: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] /> Size</td>
401: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] /> Last access</td>
402: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] /> Last modified</td>
403: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] /> All versions</td>
404: </tr><tr>
405: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] /> Author</td>
406: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] /> Keywords</td>
407: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] /> Language</td>
408: <td> </td>
409: </tr></table>
410: <input type="hidden" name="dirPointer" value="on" />
411: <input type="hidden" name="acts" value="" />
412: <input type="submit" name="attrs" value="Review" />
413: <input type="submit" name="attrs" value="Refresh" />
414: $closebutton
415: $groupimportbutton
416: </form>
417: END
418:
419: # ----------------- output starting row to the indexed file/directory hierarchy
420: my $titleclr="#ddffff";
421: # $r->print(&initdebug());
422: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
423: # $r->print(&writedebug("Only:@Only")) if (@Only);
424: $r->print("<table width='100\%' border=0><tr><td bgcolor=#eeeeee>\n");
425: $r->print("<table width='100\%' border=0><tr>\n");
426: $r->print("<td $colspan bgcolor=$titleclr><b>Name</b></td>\n");
427: $r->print("<td bgcolor=$titleclr align=right><b>Size (bytes) ".
428: "</b></td>\n") if ($hash{'display_attrs_0'} == 1);
429: $r->print("<td bgcolor=$titleclr><b>Last accessed</b></td>\n")
430: if ($hash{'display_attrs_1'} == 1);
431: $r->print("<td bgcolor=$titleclr><b>Last modified</b></td>\n")
432: if ($hash{'display_attrs_2'} == 1);
433: $r->print("<td bgcolor=$titleclr><b>Author(s)</b></td>\n")
434: if ($hash{'display_attrs_3'} == 1);
435: $r->print("<td bgcolor=$titleclr><b>Keywords</b></td>\n")
436: if ($hash{'display_attrs_4'} == 1);
437: $r->print("<td bgcolor=$titleclr><b>Language</b></td>\n")
438: if ($hash{'display_attrs_5'} == 1);
439: $r->print("</tr>");
440:
441: # ----------------- read in what directories have previously been set to "open"
442: foreach (keys %hash) {
443: if ($_ =~ /^diropen_status_/) {
444: my $key = $_;
445: $key =~ s/^diropen_status_//;
446: $dirs{$key} = $hash{$_};
447: }
448: }
449:
450: if ($ENV{'form.openuri'}) { # take care of review and refresh options
451: my $uri=$ENV{'form.openuri'};
452: if (exists($hash{'diropen_status_'.$uri})) {
453: my $cursta = $hash{'diropen_status_'.$uri};
454: $dirs{$uri} = 'open';
455: $hash{'diropen_status_'.$uri} = 'open';
456: if ($cursta eq 'open') {
457: $dirs{$uri} = 'closed';
458: $hash{'diropen_status_'.$uri} = 'closed';
459: }
460: } else {
461: $hash{'diropen_status_'.$uri} = 'open';
462: $dirs{$uri} = 'open';
463: }
464: }
465:
466: my $bredir = $ENV{'form.dirPointer'};
467: my $toplevel;
468: my $indent = 0;
469: $uri = $uri.'/' if $uri !~ /.*\/$/;
470:
471: if ($bredir ne "on") {
472: $hash{'top.level'} = $uri;
473: $toplevel = $uri;
474:
475: } else {
476: $toplevel = $hash{'top.level'};
477: }
478:
479: # -------------------------------- if not at top level, provide an uplink arrow
480: if ($toplevel ne "/res/"){
481: my (@uri_com) = split(/\//,$uri);
482: pop @uri_com;
483: my $upone = join('/',@uri_com);
484: my @list = qw (0);
485: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
486: $indent = 1;
487: }
488:
489: # -------- recursively go through all the directories and output as appropriate
490: &scanDir ($r,$toplevel,$indent,\%hash);
491:
492: # ---------------------------- embed hidden information useful for group import
493: $r->print("<form name='fnum'>");
494: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
495:
496: # -------------------------------------------------------------- end the tables
497: $r->print("</table>");
498: $r->print("</td></tr></table>");
499:
500: # --------------------------------------------------- end the output and return
501: $r->print("</body></html>\n");
502: untie(%hash);
503: } else {
504: $r->print('<html><head></head><body>Unable to tie hash to db '.
505: 'file</body></html>');
506: return OK;
507: }
508: return OK;
509: }
510:
511: # ----------------------------------------------- recursive scan of a directory
512: sub scanDir {
513: my ($r,$startdir,$indent,$hashref)=@_;
514: my ($compuri,$curdir);
515: my $dirptr=16384;
516: $indent++;
517:
518: my %dupdirs = %dirs;
519: my @list=&get_list($r,$startdir);
520: foreach my $line (@list) {
521: my ($strip,$dom,$foo,$testdir,$foo)=split(/\&/,$line,5);
522: next if $strip =~ /.*\.meta$/;
523: my (@fileparts) = split(/\./,$strip);
524: if ($hash{'display_attrs_6'} != 1) {
525: if (scalar(@fileparts) >= 3) {
526: my $fext = pop @fileparts;
527: my $ov = pop @fileparts;
528: my $fname = join ('.',@fileparts,$fext);
529: next if (grep /$fname/,@list and $ov =~ /\d+/);
530: }
531: }
532:
533: if ($dom eq "domain") {
534: $compuri = join('',$strip,"/"); # dom list has /res/<domain name>
535: $curdir = $compuri;
536: } else {
537: # user, dir & file have name only, i.e., w/o path
538: $compuri = join('',$startdir,$strip,"/");
539: $curdir = $startdir;
540: }
541: my $diropen = "closed";
542: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/)) {
543: while (my ($key,$val)= each %dupdirs) {
544: if ($key eq $compuri and $val eq "open") {
545: $diropen = "opened";
546: delete $dupdirs{key},$dirs{$key};
547: }
548: }
549: }
550: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
551: &scanDir ($r,$compuri,$indent) if $diropen eq "opened";
552: }
553: $indent--;
554: }
555:
556: # --------------- get complete matched list based on the uri (returns an array)
557: sub get_list {
558: my ($r,$uri)=@_;
559: my @list;
560: my $luri = $uri;
561: $luri =~ s/\//_/g;
562:
563: if ($ENV{'form.attrs'} eq "Refresh") {
564: foreach (keys %hash) {
565: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
566: }
567: }
568:
569: if ($hash{'dirlist_files'.$luri}) {
570: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
571: } else {
572: @list = &Apache::lonnet::dirlist($uri);
573: $hash{'dirlist_files_'.$luri} = join('\n',@list);
574: }
575: return @list=&match_ext($r,@list);
576: }
577:
578: sub initdebug {
579: return <<ENDJS;
580: <script>
581: var debugging = true;
582: if (debugging) {
583: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
584: }
585:
586: function output(text) {
587: if (debugging) {
588: debuggingWindow.document.writeln(text);
589: }
590: }
591: output("<html><head><title>Debugging Window</title></head><body><pre>");
592: </script>
593: ENDJS
594: }
595:
596: sub writedebug {
597: my $text = shift;
598: return "<script>output('$text');</script>";
599: }
600:
601: # -------------------- filters out files based on extensions (returns an array)
602: sub match_ext {
603: my ($r,@packlist)=@_;
604: my @trimlist;
605: my $nextline;
606: my @fileext;
607: my $dirptr=16384;
608:
609: foreach my $line (@packlist) {
610: chomp $line;
611: $line =~ s/^\/home\/httpd\/html//;
612: my @unpackline = split (/\&/,$line);
613: next if ($unpackline[0] eq ".");
614: next if ($unpackline[0] eq "..");
615: my @filecom = split (/\./,$unpackline[0]);
616: my $fext = pop(@filecom);
617: my $fnptr = $unpackline[3]&$dirptr;
618: if ($fnptr == 0 and $unpackline[3] ne "") {
619: my $embstyle = &Apache::loncommon::fileembstyle($fext);
620: push @trimlist,$line if (defined($embstyle) &&
621: ($embstyle ne 'hdn' or $fext eq 'meta'));
622: } else {
623: push @trimlist,$line;
624: }
625: }
626: @trimlist = sort (@trimlist);
627: return @trimlist;
628: }
629:
630: # ------------------------------- displays one line in appropriate table format
631: sub display_line {
632: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
633: my (@pathfn, $fndir, $fnptr);
634: my $dirptr=16384;
635: my $fileclr="#ffffe6";
636: my $iconpath= $r->dir_config('lonIconsURL') . "/";
637:
638: my @filecom = split (/\&/,$line);
639: my @pathcom = split (/\//,$filecom[0]);
640: my $listname = $pathcom[scalar(@pathcom)-1];
641: my $fnptr = $filecom[3]&$dirptr;
642: my $msg = 'View '.$filecom[0].' resources';
643: $msg = 'Close '.$filecom[0].' directory' if $diropen eq "opened";
644:
645: my $tabtag="</td>";
646: my $i=0;
647:
648: while ($i<=5) {
649: $tabtag=join('',$tabtag,"<td bgcolor=",$fileclr,"> </td>")
650: if $hash{'display_attrs_'.$i} == 1;
651: $i++;
652: }
653:
654: # display uplink arrow
655: if ($filecom[1] eq "viewOneUp") {
656: $r->print("<tr>$extrafield");
657: $r->print("<td bgcolor=$fileclr valign=bottom>\n");
658: $r->print ('<form method="post" name="dirpathUP" action="'.$startdir.
659: '/" '.
660: 'onSubmit="return rep_dirpath(\'UP\','.
661: 'document.forms.fileattr.acts.value)" '.
662: 'enctype="application/x-www-form-urlencoded"'.
663: '>'."\n");
664: $r->print ('<input type=hidden name=openuri value="'.
665: $startdir.'">'."\n");
666: $r->print ('<input type="hidden" name="acts" value="">'."\n");
667: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
668: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
669: "\n");
670: $r->print("Up $tabtag</tr></form>\n");
671: return OK;
672: }
673:
674: # display domain
675: if ($filecom[1] eq "domain") {
676: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
677: if ($ENV{'form.dirPointer'} eq "on");
678: $r->print("<tr>$extrafield");
679: $r->print("<td bgcolor=$fileclr valign=bottom>");
680: &begin_form ($r,$filecom[0].'/');
681: my $anchor = $filecom[0].'/';
682: $anchor =~ s/\///g;
683: $r->print ('<a name="'.$anchor.'">');
684: $r->print ('<input type="hidden" name="acts" value="">');
685: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
686: $diropen.'.gif"');
687: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
688: "\n");
689: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
690: '/\')"><img src="'.$iconpath.'server.gif"');
691: $r->print (' border="0" /></a>'."\n");
692: $r->print("Domain - $listname $tabtag</tr></form>\n");
693: return OK;
694:
695: # display user directory
696: }
697: if ($filecom[1] eq "user") {
698: $r->print("<tr>$extrafield");
699: $r->print("<td bgcolor=$fileclr valign=bottom nowrap>\n");
700: my $curdir = $startdir.$filecom[0].'/';
701: my $anchor = $curdir;
702: $anchor =~ s/\///g;
703: &begin_form ($r,$curdir);
704: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
705: 'whitespace1.gif" border="0" />'."\n");
706: $r->print ('<input type="hidden" name="acts" value="">');
707: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
708: '.gif"');
709: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
710: "\n");
711: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
712: $iconpath.'quill.gif border="0" name="'.$msg.
713: '" height="22" /></a>');
714: $r->print ($listname.$tabtag.'</tr></form>'."\n");
715: return OK;
716: }
717:
718: # display file
719: if ($fnptr == 0 and $filecom[3] ne "") {
720: my @file_ext = split (/\./,$listname);
721: my $curfext = $file_ext[-1];
722: if (@Omit) {
723: foreach (@Omit) { return OK if ($curfext eq $_); }
724: }
725: if (@Only) {
726: my $skip = 1;
727: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
728: return OK if ($skip > 0);
729: }
730: # Set the icon for the file
731: my $iconname = "unknown.gif";
732: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
733: # The unless conditional that follows is a bit of overkill
734: $iconname = $curfext.".gif" unless
735: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
736: #
737: my $filelink = $startdir.$filecom[0];
738: $r->print("<tr><td nowrap valign='bottom' bgcolor=$fileclr>");
739: my $metafile = grep /^$filecom[0]\.meta\&/, @list;
740: my $title;
741: if ($ENV{'form.catalogmode'} eq 'interactive') {
742: $title=$listname;
743: $title = &Apache::lonnet::metadata($filelink,'title')
744: if ($metafile == 1);
745: $title=$listname unless $title;
746: my $titleesc=$title;
747: $titleesc=~s/\'/\\'/; #' (clean up this spare quote
748: $r->print("<a href=\"javascript:select_data(\'",
749: $titleesc,"','",$filelink,"')\">");
750: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
751: "\n");
752: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
753: }
754: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
755: $title=$listname;
756: $title = &Apache::lonnet::metadata($filelink,'title')
757: if ($metafile == 1);
758: $title=$listname unless $title;
759: $r->print("<form name='form$fnum'>\n");
760: $r->print("<input type='checkbox' name='filelink"."' ".
761: "value='$filelink' onClick='".
762: "javascript:queue(\"form$fnum\")' ");
763: if ($hash{'store_'.$filelink}) {
764: $r->print("checked");
765: }
766: $r->print(">\n");
767: $r->print("<input type='hidden' name='title"."' ".
768: "value='$title'>\n");
769: $r->print("</form>\n");
770: $r->print("</td><td valign='bottom' nowrap bgcolor=$fileclr>");
771: $hash{"pre_${fnum}_link"}=$filelink;
772: $hash{"pre_${fnum}_title"}=$title;
773: $fnum++;
774: }
775:
776: if ($indent > 0 and $indent < 11) {
777: $r->print("<img src=",$iconpath,"whitespace",$indent,
778: ".gif border='0' />\n");
779: } elsif ($indent >0) {
780: my $ten = int($indent/10.);
781: my $rem = $indent%10.0;
782: my $count = 0;
783: while ($count < $ten) {
784: $r->print("<img src=",$iconpath,
785: "whitespace10.gif border='0' />\n");
786: $count++;
787: }
788: $r->print("<img src=",$iconpath,"whitespace",$rem,
789: ".gif border='0' />\n") if $rem > 0;
790: }
791:
792: $r->print("<img src=$iconpath$iconname border='0' />\n");
793: $r->print (" <a href=\"javascript:openWindow('".$filelink.
794: "', 'metadatafile', '450', '500', 'no', 'yes')\";".
795: " TARGET=_self>$listname</a> ");
796:
797: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
798: ".meta', 'metadatafile', '400', '450', 'no', 'yes')\"; ".
799: "TARGET=_self>metadata</a>) ") if ($metafile == 1);
800:
801: $r->print("</td>\n");
802: $r->print("<td bgcolor=$fileclr align=right valign=bottom> ",
803: $filecom[8]," </td>\n")
804: if $hash{'display_attrs_0'} == 1;
805: $r->print("<td bgcolor=$fileclr valign=bottom> ".
806: (localtime($filecom[9]))." </td>\n")
807: if $hash{'display_attrs_1'} == 1;
808: $r->print("<td bgcolor=$fileclr valign=bottom> ".
809: (localtime($filecom[10]))." </td>\n")
810: if $hash{'display_attrs_2'} == 1;
811:
812: if ($hash{'display_attrs_3'} == 1) {
813: my $author = &Apache::lonnet::metadata($filelink,'author')
814: if ($metafile == 1);
815: $author = ' ' if (!$author);
816: $r->print("<td bgcolor=$fileclr valign=bottom> ".$author.
817: " </td>\n");
818: }
819: if ($hash{'display_attrs_4'} == 1) {
820: my $keywords = &Apache::lonnet::metadata($filelink,'keywords')
821: if ($metafile == 1);
822: $keywords = ' ' if (!$keywords);
823: $r->print("<td bgcolor=$fileclr valign=bottom> ".$keywords.
824: " </td>\n");
825: }
826: if ($hash{'display_attrs_5'} == 1) {
827: my $lang = &Apache::lonnet::metadata($filelink,'language')
828: if ($metafile == 1);
829: $lang = &Apache::loncommon::languagedescription($lang);
830: $lang = ' ' if (!$lang);
831: $r->print("<td bgcolor=$fileclr valign=bottom> ".$lang.
832: " </td>\n");
833: }
834: $r->print("</tr>\n");
835: }
836:
837: # -- display directory
838: if ($fnptr == $dirptr) {
839: my @file_ext = split (/\./,$listname);
840: my $curfext = $file_ext[scalar(@file_ext)-1];
841: my $curdir = $startdir.$filecom[0].'/';
842: my $anchor = $curdir;
843: $anchor =~ s/\///g;
844: $r->print("<tr>$extrafield<td bgcolor=$fileclr valign=bottom>");
845: &begin_form ($r,$curdir);
846: my $indentm1 = $indent-1;
847: if ($indentm1 < 11 and $indentm1 > 0) {
848: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
849: ".gif border='0' />\n");
850: } else {
851: my $ten = int($indentm1/10.);
852: my $rem = $indentm1%10.0;
853: my $count = 0;
854: while ($count < $ten) {
855: $r->print ("<img src=",$iconpath
856: ,"whitespace10.gif border='0' />\n");
857: $count++;
858: }
859: $r->print ("<img src=",$iconpath,"whitespace",$rem,
860: ".gif border='0' />\n") if $rem > 0;
861: }
862: $r->print ('<input type="hidden" name="acts" value="">');
863: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
864: 'folder_pointer_'.$diropen.'.gif"');
865: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
866: "\n");
867: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
868: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
869: "\n");
870: $r->print ("$listname$tabtag</tr></form>\n");
871: }
872:
873: }
874:
875: # ------------------- prints the beginning of a form for directory or file link
876: sub begin_form {
877: my ($r,$uri) = @_;
878: my $anchor = $uri;
879: $anchor =~ s/\///g;
880: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
881: '#'.$anchor.
882: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
883: ',document.forms.fileattr.acts.value)" '.
884: 'enctype="application/x-www-form-urlencoded">'."\n");
885: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
886: "\n");
887: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
888: $dnum++;
889: }
890:
891: # --------- settings whenever the user causes the indexer window to be launched
892: sub start_fresh_session {
893: delete $hash{'mode_catalog'};
894: delete $hash{'form_mode'};
895: delete $hash{'form_form'};
896: delete $hash{'form_element'};
897: delete $hash{'form_omit'};
898: delete $hash{'form_only'};
899: foreach (keys %hash) {
900: if ($_ =~ /^pre_/) {
901: delete $hash{$_};
902: }
903: if ($_ =~ /^store/) {
904: delete $hash{$_};
905: }
906: }
907: }
908:
909: # ------------------------------------------------------------------- setvalues
910: sub setvalues {
911: # setvalues is used in registerurl to synchronize the database
912: # hash and environment hashes
913: my ($H1,$h1key,$H2,$h2key) =@_;
914: #
915: if (exists $H2->{$h2key}) {
916: $H1->{$h1key} = $H2->{$h2key};
917: } elsif (exists $H1->{$h1key}) {
918: $H2->{$h2key} = $H1->{$h1key};
919: }
920: }
921:
922: 1;
923:
924: =head1 NAME
925:
926: Apache::lonindexer - mod_perl module for cross server filesystem browsing
927:
928: =head1 SYNOPSIS
929:
930: Invoked by /etc/httpd/conf/srm.conf:
931:
932: <LocationMatch "^/res.*/$">
933: SetHandler perl-script
934: PerlHandler Apache::lonindexer
935: </LocationMatch>
936:
937: =head1 INTRODUCTION
938:
939: This module enables a scheme of browsing across a cross server.
940:
941: This is part of the LearningOnline Network with CAPA project
942: described at http://www.lon-capa.org.
943:
944: =head1 BEGIN SUBROUTINE
945:
946: This routine is only run once after compilation.
947:
948: =over 4
949:
950: =item *
951:
952: Initializes %language hash table.
953:
954: =back
955:
956: =head1 HANDLER SUBROUTINE
957:
958: This routine is called by Apache and mod_perl.
959:
960: =over 4
961:
962: =item *
963:
964: read in machine configuration variables
965:
966: =item *
967:
968: see if called from an interactive mode
969:
970: =item *
971:
972: refresh environment with user database values (in %hash)
973:
974: =item *
975:
976: define extra fields and buttons in case of special mode
977:
978: =item *
979:
980: set catalogmodefunctions to have extra needed javascript functionality
981:
982: =item *
983:
984: print header
985:
986: =item *
987:
988: evaluate actions from previous page (both cumulatively and chronologically)
989:
990: =item *
991:
992: output title
993:
994: =item *
995:
996: get state of file attributes to be showing
997:
998: =item *
999:
1000: output state of file attributes to be showing
1001:
1002: =item *
1003:
1004: output starting row to the indexed file/directory hierarchy
1005:
1006: =item *
1007:
1008: read in what directories have previously been set to "open"
1009:
1010: =item *
1011:
1012: if not at top level, provide an uplink arrow
1013:
1014: =item *
1015:
1016: recursively go through all the directories and output as appropriate
1017:
1018: =item *
1019:
1020: information useful for group import
1021:
1022: =item *
1023:
1024: end the tables
1025:
1026: =item *
1027:
1028: end the output and return
1029:
1030: =back
1031:
1032: =head1 OTHER SUBROUTINES
1033:
1034: =over 4
1035:
1036: =item *
1037:
1038: scanDir - recursive scan of a directory
1039:
1040: =item *
1041:
1042: get_list - get complete matched list based on the uri (returns an array)
1043:
1044: =item *
1045:
1046: match_ext - filters out files based on extensions (returns an array)
1047:
1048: =item *
1049:
1050: display_line - displays one line in appropriate table format
1051:
1052: =item *
1053:
1054: begin_form - prints the beginning of a form for directory or file link
1055:
1056: =item *
1057:
1058: start_fresh_session - settings whenever the user causes the indexer window
1059: to be launched
1060:
1061: =back
1062:
1063: =cut
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