1: # The LearningOnline Network with CAPA
2: # Construction Space Directory Lister
3: #
4: # $Id: lonpubdir.pm,v 1.39 2003/09/22 03:02:06 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: #
29: # (TeX Content Handler
30: #
31: # YEAR=2000
32: # 05/29/00,05/30,10/11 Gerd Kortemeyer)
33: #
34: # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
35: # YEAR=2001
36: # 03/23 Guy Albertelli
37: # 03/24,03/29 Gerd Kortemeyer)
38: # 03/31,04/03,05/09,06/23,08/18,08/20 Gerd Kortemeyer
39: # 12/28 Gerd Kortemeyer
40: #
41: ###
42:
43: package Apache::lonpubdir;
44:
45: use strict;
46: use Apache::File;
47: use File::Copy;
48: use Apache::Constants qw(:common :http :methods);
49: use Apache::loncacc;
50: use Apache::loncommon();
51: use Apache::lonlocal;
52:
53: sub handler {
54:
55: my $r=shift;
56:
57: my $fn;
58:
59:
60:
61: $fn = getEffectiveUrl($r);
62:
63: # Validate access to the construction space and get username@domain.
64:
65: my $uname;
66: my $udom;
67:
68: ($uname,$udom)=
69: &Apache::loncacc::constructaccess(
70: $fn,$r->dir_config('lonDefDomain'));
71: unless (($uname) && ($udom)) {
72: $r->log_reason($uname.' at '.$udom.
73: ' trying to list directory '.$ENV{'form.filename'}.
74: ' ('.$fn.') - not authorized',
75: $r->filename);
76: return HTTP_NOT_ACCEPTABLE;
77: }
78:
79: # Remove trailing / from directory name.
80:
81: $fn=~s/\/$//;
82:
83: unless ($fn) {
84: $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
85: ' trying to list empty directory', $r->filename);
86: return HTTP_NOT_FOUND;
87: }
88:
89: # ----------------------------------------------------------- Start page output
90:
91: my $thisdisfn=$fn;
92: $thisdisfn=~s/^\/home\/$uname\/public_html//; # subdirectory part of
93: # construction space.
94: my $docroot=$r->dir_config('lonDocRoot'); # Apache londocument root.
95:
96: my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$thisdisfn; # Resource directory
97: my $targetdir=$udom.'/'.$uname.$thisdisfn; # Publiction target directory.
98: my $linkdir='/priv/'.$uname.$thisdisfn; # Full URL name of constr space.
99:
100:
101:
102: &startpage($r, $uname, $udom, $thisdisfn); # Put out the start of page.
103:
104: # Start off the diretory table.
105:
106: $r->print('<table border=2>'.
107: '<tr><th>'.&mt('Actions').'</th><th>'.&mt('Name').'</th><th>'.
108: &mt('Title').'</th>'.
109: '<th>'.&mt('Status').'</th><th>'.&mt('Last Modified').
110: '</th></tr>');
111:
112: my $filename;
113: my $dirptr=16384; # Mask indicating a directory in stat.cmode.
114:
115: opendir(DIR,$fn);
116: my @files=sort(readdir(DIR));
117: foreach my $filename (@files) {
118: my ($cdev,$cino,$cmode,$cnlink,
119: $cuid,$cgid,$crdev,$csize,
120: $catime,$cmtime,$cctime,
121: $cblksize,$cblocks)=stat($fn.'/'.$filename);
122:
123: my $extension='';
124: if ($filename=~/\.(\w+)$/) { $extension=$1; }
125: if ($cmode&$dirptr) {
126: putdirectory($r, $thisdisfn, $linkdir, $filename, $cmtime);
127: } elsif (&Apache::loncommon::fileembstyle($extension) ne 'hdn') {
128: putresource($r, $uname, $filename, $thisdisfn, $resdir,
129: $targetdir, $linkdir, $cmtime);
130: } else {
131: # "hidden" extension and not a directory, so hide it away.
132: }
133: }
134: closedir(DIR);
135:
136: $r->print('</table></body></html>');
137: return OK;
138: }
139: #
140: # Gets the effective URL of the request and returns it:
141: # $effn = getEffectiveUrl($r);
142: # $r - The Apache Request object.
143: sub getEffectiveUrl {
144: my $r = shift;
145: my $fn;
146:
147: if ($ENV{'form.filename'}) { # If a form filename is defined.
148: $fn=$ENV{'form.filename'};
149: #
150: # Replace the ~username of the URL with /home/username/public_html
151: # so that we don't have to worry about ~ expansion internally.
152: #
153: $fn=~s/^http\:\/\/[^\/]+\///;
154: $fn=~s/^\///;
155: $fn=~s/\~(\w+)/\/home\/$1\/public_html/;
156:
157: # Remove trailing / strings (?)
158:
159: $fn=~s/\/[^\/]+$//;
160: } else {
161: # If no form is defined, use request filename.
162: $fn = $r->filename();
163: my $lonDocRoot=$r->dir_config('lonDocRoot');
164: if ( $fn =~ /$lonDocRoot/ ) {
165: #internal authentication, needs fixup.
166: $fn = $r->uri(); # non users do not get the full path request
167: # through SCRIPT_FILENAME
168: $fn=~s|^/~(\w+)|/home/$1/public_html|;
169: }
170: }
171: $fn=~s/\/+/\//g;
172: return $fn;
173: }
174: #
175: # Output the header of the page. This includes:
176: # - The HTML header
177: # - The H1/H3 stuff which includes the directory.
178: #
179: # startpage($r, $uame, $udom, $thisdisfn);
180: # $r - The apache request object.
181: # $uname - User name.
182: # $udom - Domain name the user is logged in under.
183: # $thisdisfn - Displayable version of the filename.
184:
185: sub startpage {
186: my ($r, $uname, $udom, $thisdisfn) = @_;
187:
188: &Apache::loncommon::content_type($r,'text/html');
189: $r->send_http_header;
190:
191: $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
192:
193: $r->print(&Apache::loncommon::bodytag(undef,undef,undef,1));
194: my $pubdirscript=(<<ENDPUBDIRSCRIPT);
195: <script>
196: // Store directory location for menu bar to find
197:
198: parent.lastknownpriv='/~$uname/$thisdisfn/';
199:
200: // Confirmation dialogues
201:
202: function pubdir(theform) {
203: if (confirm('Publish complete directory?')) {
204: theform.submit();
205: }
206: }
207: function pubrecdir(theform) {
208: if (confirm('Publish directory and all subdirectories?')) {
209: theform.pubrec.value='1';
210: theform.submit();
211: }
212: }
213: </script>
214: ENDPUBDIRSCRIPT
215:
216: $r->print('<h1>'.&mt('Construction Space Directory').' <tt>'.
217: $thisdisfn.'/</tt></h1>'.
218: '<script type="text/javascript">top.document.title = \''.
219: $thisdisfn.'/ - LON-CAPA Construction Space\';</script>'.
220: $pubdirscript.
221: '<form method="post" action="/adm/publish" target="_parent">'.
222: '<table><tr><td><input type="hidden" name="filename" value="/~'.
223: $uname.$thisdisfn.'/" />'.
224: '<input type="button" onClick="pubdir(this.form);" value="Publish Directory" />'.
225: '<input type="hidden" name="pubrec" value="" />'.
226: '<input type="button" onClick="pubrecdir(this.form);" value="Publish Directory and Sub Directories" /></td><td>'.
227: '<input type="button" onClick="window.location='."'/~".
228: $uname.$thisdisfn."/default.meta'".'" value="Edit Directory Catalog Information" /></td></tr><tr><td><input type="checkbox" name="forcerepub" /> Force publication of unmodified files.</td><td> </td></tr></table></form>');
229:
230: if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
231: $r->print('<h3>'.&mt('Co-Author').': '.$uname.' at '.$udom.
232: '</h3>');
233: }
234: }
235:
236: #
237: # Get the title string or "[untitled]" if the file has no title metadata:
238: # Without the latter substitution, it's impossible to examine metadata for
239: # untitled resources. Resources may be legitimately untitled, to prevent
240: # searches from locating them.
241: #
242: # $str = getTitleString($fullname);
243: # $fullname - Fully qualified filename to check.
244: #
245: sub getTitleString {
246: my $fullname = shift;
247: my $title = &Apache::lonnet::metadata($fullname, 'title');
248:
249: unless ($title) {
250: $title = "[untitled]";
251: }
252: return $title;
253: }
254:
255:
256: #
257: # Put out a directory table row:
258: # putdirectory(r, base, here, dirname, modtime)
259: # r - Apache request object.
260: # reqfile - File in request.
261: # here - Where we are in directory tree.
262: # dirname - Name of directory special file.
263: # modtime - Encoded modification time.
264: #
265: sub putdirectory {
266: my ($r, $reqfile, $here, $dirname, $modtime) = @_;
267:
268: # construct the display filename: the directory name unless ..:
269:
270: my $disfilename = $dirname;
271: if ($dirname eq '..') {
272: $disfilename = '<i>'.&mt('Parent Directory').'</i>';
273: }
274: unless (( ($dirname eq '..') && ($reqfile eq '')) ||
275: ($dirname eq '.')) {
276: $r->print('<tr bgcolor="#CCCCFF">'.
277: '<td>Go to ...</td>'.
278: '<td><a href="'.$here.'/'.$dirname.'/" target="_top">'.
279: $disfilename.'</a></td>'.
280: '<td> </td>'.
281: '<td> </td>'.
282: '<td>'.localtime($modtime).'</td>'.
283: "</tr>\n");
284: }
285: return OK;
286: }
287: #
288: # Put a table row for a file resource.
289: #
290: sub putresource {
291: my ($r, $uname, $filename, $thisdisfn,
292: $resdir, $targetdir, $linkdir,
293: $cmtime) = @_;
294:
295: my $status='Unpublished';
296: my $bgcolor='#FFCCCC';
297: my $title=' ';
298: if (-e $resdir.'/'.$filename) {
299: my ($rdev,$rino,$rmode,$rnlink,
300: $ruid,$rgid,$rrdev,$rsize,
301: $ratime,$rmtime,$rctime,
302: $rblksize,$rblocks)=stat($resdir.'/'.$filename);
303: if ($rmtime>=$cmtime) {
304: $status='Published';
305: $bgcolor='#CCFFCC';
306: $title='<a href="/res/'.$targetdir.'/'.$filename.
307: '.meta" target=cat>'.
308: getTitleString($targetdir.'/'.$filename, 'title').'</a>';
309: } else {
310: $status='Modified';
311: $bgcolor='#FFFFCC';
312: $title='<a href="/res/'.$targetdir.'/'.$filename.'.meta" target=cat>'.
313: getTitleString($targetdir.'/'.$filename,'title').'</a>';
314: if (&Apache::loncommon::fileembstyle(($filename=~/\.(\w+)$/)) eq 'ssi') {
315: $status.='<br><a href="/adm/diff?filename=/~'.$uname.
316: $thisdisfn.'/'.$filename.
317: '&versiontwo=priv" target=cat>Diffs</a>';
318: }
319: }
320: $status.='<br><a href="/adm/retrieve?filename=/~'.$uname.
321: $thisdisfn.'/'.$filename.'" target=cat>Retrieve</a>';
322: }
323: my $editlink='';
324: my $editlink2='';
325: if ($filename=~/\.(xml|html|htm|xhtml|xhtm|sty)$/) {
326: $editlink=' (<a href="'.$linkdir.'/'.$filename.'?forceedit=1" target="_top">'.&mt('Edit').'</a>)';
327: }
328: if ($filename=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
329: $editlink=' (<a href="'.$linkdir.'/'.$filename.'?forceedit=1" target="_top">'.&mt('EditXML').'</a>)';
330: $editlink2=' (<a href="'.$linkdir.'/'.$filename.'?forceColoredit=1" target="_top">'.&mt('Edit').'</a>)';
331: }
332: $r->print('<tr bgcolor="'.$bgcolor.'">'.
333: '<td><a target="_parent" href="/adm/publish?filename=/~'.
334: $uname.$thisdisfn.'/'.$filename.'">'.'Publish</a>'.
335: '</td>'.
336: '<td>'.
337: '<a href="'.$linkdir.'/'.$filename.'" target="_top">'.
338: $filename.'</a>'.$editlink2.$editlink.
339: '</td>'.
340: '<td>'.$title.'</td>'.
341: '<td>'.$status.'</td>'.
342: '<td>'.localtime($cmtime).'</td>'.
343: "</tr>\n");
344: return OK;
345: }
346: #
347: # Categorize files in the directory.
348: # For each file in a list of files in a file directory,
349: # the file categorized as one of:
350: # - directory
351: # - sequence
352: # - problem
353: # - Other resource.
354: #
355: # For each file the modification date is determined as well.
356: # Returned is a list of sublists:
357: # (directories, sequences, problems, other)
358: # each of the sublists contains entries of the following form (sorted by
359: # filename):
360: # (filename, typecode, lastmodtime)
361: #
362: # $list = CategorizeFiles($location, $files)
363: # $location - Directory in which the files live (relative to our
364: # execution.
365: # $files - list of files.
366: #
367: sub CategorizeFiles {
368: my $location = shift;
369: my $files = shift;
370: }
371:
372: 1;
373: __END__
374:
375: =head1 NAME
376:
377: Apache::lonpubdir - Construction space directory lister
378:
379: =head1 SYNOPSIS
380:
381: Invoked (for various locations) by /etc/httpd/conf/srm.conf:
382:
383: <LocationMatch "^/\~.*/$">
384: PerlAccessHandler Apache::loncacc
385: SetHandler perl-script
386: PerlHandler Apache::lonpubdir
387: ErrorDocument 403 /adm/login
388: ErrorDocument 404 /adm/notfound.html
389: ErrorDocument 406 /adm/unauthorized.html
390: ErrorDocument 500 /adm/errorhandler
391: </LocationMatch>
392:
393: <Location /adm/pubdir>
394: PerlAccessHandler Apache::lonacc
395: SetHandler perl-script
396: PerlHandler Apache::lonpubdir
397: ErrorDocument 403 /adm/login
398: ErrorDocument 404 /adm/notfound.html
399: ErrorDocument 406 /adm/unauthorized.html
400: ErrorDocument 500 /adm/errorhandler
401: </Location>
402:
403: =head1 INTRODUCTION
404:
405: This module publishes a directory of files.
406:
407: This is part of the LearningOnline Network with CAPA project
408: described at http://www.lon-capa.org.
409:
410: =head1 HANDLER SUBROUTINE
411:
412: This routine is called by Apache and mod_perl.
413:
414: =over 4
415:
416: =item *
417:
418: read in information
419:
420: =item *
421:
422: start page output
423:
424: =item *
425:
426: run through list of files and attempt to publish unhidden files
427:
428: =back
429:
430: =cut
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