(Finally!) check for existing images and refuse their upload with a 403 instead of...
[pr0n] / perl / Sesse / pr0n / WebDAV.pm
1 package Sesse::pr0n::WebDAV;
2 use strict;
3 use warnings;
4
5 use Sesse::pr0n::Common qw(error dberror);
6 use Digest::SHA1;
7 use MIME::Base64;
8 use Apache2::Request;
9 use Apache2::Upload;
10
11 sub handler {
12         my $r = shift;
13         my $dbh = Sesse::pr0n::Common::get_dbh();
14                         
15         $r->headers_out->{'DAV'} = "1,2";
16
17         # We only handle depth=0, depth=1 (cf. the RFC)
18         my $depth = $r->headers_in->{'depth'};
19         $depth = 0 if (!defined($depth));
20         if (defined($depth) && $depth ne "0" && $depth ne "1") {
21                 $r->content_type('text/plain; charset="utf-8"');
22                 $r->status(403);
23                 $r->print("Invalid depth setting");
24                 return Apache2::Const::OK;
25         }
26
27         my ($user,$takenby) = Sesse::pr0n::Common::check_access($r);
28         if (!defined($user)) {
29                 return Apache2::Const::OK;
30         }
31
32         # Just "ping, are you alive and do you speak WebDAV"
33         if ($r->method eq "OPTIONS") {
34                 $r->content_type('text/plain; charset="utf-8"');
35                 $r->status(200);
36                 $r->headers_out->{'allow'} = 'OPTIONS,PUT';
37                 $r->headers_out->{'ms-author-via'} = 'DAV';
38                 return Apache2::Const::OK;
39         }
40         
41         # Directory listings et al
42         if ($r->method eq "PROPFIND") {
43                 # We ignore the body, but we _must_ consume it fully before
44                 # we output anything, or Squid will get seriously confused
45                 $r->discard_request_body;
46
47                 $r->content_type('text/xml; charset="utf-8"');
48                 $r->status(207);
49
50                 if ($r->uri =~ m#^/webdav/?$#) {
51                         $r->headers_out->{'content-location'} = "/webdav/";
52                 
53                         # Root directory
54                         $r->print(<<"EOF");
55 <?xml version="1.0" encoding="utf-8"?>
56 <multistatus xmlns="DAV:">
57   <response>
58      <href>/webdav/</href>
59      <propstat>
60         <prop>
61           <resourcetype><collection/></resourcetype>
62           <getcontenttype>text/xml</getcontenttype>
63         </prop>
64         <status>HTTP/1.1 200 OK</status>
65      </propstat>
66   </response>
67 EOF
68
69                         # Optionally list the upload/ dir
70                         if ($depth >= 1) {
71                                 $r->print(<<"EOF");
72   <response>
73      <href>/webdav/upload/</href>
74      <propstat>
75         <prop>
76           <resourcetype><collection/></resourcetype>
77           <getcontenttype>text/xml</getcontenttype>
78         </prop>
79         <status>HTTP/1.1 200 OK</status>
80      </propstat>
81   </response>
82 EOF
83                         }
84                         $r->print("</multistatus>\n");
85                  } elsif ($r->uri =~ m#^/webdav/upload/?$#) {
86                         $r->headers_out->{'content-location'} = "/webdav/upload/";
87                         
88                         # Upload root directory
89                         $r->print(<<"EOF");
90 <?xml version="1.0" encoding="utf-8"?>
91 <multistatus xmlns="DAV:">
92   <response>
93      <href>/webdav/upload/</href>
94      <propstat>
95         <prop>
96           <resourcetype><collection/></resourcetype>
97           <getcontenttype>text/xml</getcontenttype>
98         </prop>
99         <status>HTTP/1.1 200 OK</status>
100      </propstat>
101   </response>
102 EOF
103
104                         # Optionally list all events
105                         if ($depth >= 1) {
106                                 my $q = $dbh->prepare('SELECT * FROM events WHERE vhost=?') or
107                                         dberror($r, "Couldn't list events");
108                                 $q->execute($r->get_server_name) or
109                                         dberror($r, "Couldn't get events");
110                 
111                                 while (my $ref = $q->fetchrow_hashref()) {
112                                         my $id = $ref->{'event'};
113                                         my $name = $ref->{'name'};
114                                 
115                                         $name =~ s/&/\&amp;/g;  # hack :-)
116                                         $r->print(<<"EOF");
117   <response>
118      <href>/webdav/upload/$id/</href>
119      <propstat>
120         <prop>
121           <resourcetype><collection/></resourcetype>
122           <getcontenttype>text/xml</getcontenttype>
123           <displayname>$name</displayname> 
124         </prop>
125         <status>HTTP/1.1 200 OK</status>
126      </propstat>
127   </response>
128 EOF
129                                 }
130                                 $q->finish;
131                         }
132
133                         $r->print("</multistatus>\n");
134                 } elsif ($r->uri =~ m#^/webdav/upload/([a-zA-Z0-9-]+)/?$#) {
135                         my $event = $1;
136                         
137                         $r->headers_out->{'content-location'} = "/webdav/upload/$event/";
138                         
139                         # Check that we do indeed exist
140                         my $ref = $dbh->selectrow_hashref('SELECT count(*) AS numev FROM events WHERE vhost=? AND event=?',
141                                 undef, $r->get_server_name, $event);
142                         if ($ref->{'numev'} != 1) {
143                                 $r->status(404);
144                                 $r->content_type('text/plain; charset=utf-8');
145                                 $r->print("Couldn't find event in database");
146                                 return Apache2::Const::OK;
147                         }
148                         
149                         # OK, list the directory
150                         $r->print(<<"EOF");
151 <?xml version="1.0" encoding="utf-8"?>
152 <multistatus xmlns="DAV:">
153   <response>
154      <href>/webdav/upload/$event/</href>
155      <propstat>
156         <prop>
157           <resourcetype><collection/></resourcetype>
158           <getcontenttype>text/xml</getcontenttype>
159         </prop>
160         <status>HTTP/1.1 200 OK</status>
161      </propstat>
162   </response>
163 EOF
164
165                         # List all the files within too, of course :-)
166                         if ($depth >= 1) {
167                                 my $q = $dbh->prepare('SELECT * FROM images WHERE vhost=? AND event=?') or
168                                         dberror($r, "Couldn't list images");
169                                 $q->execute($r->get_server_name, $event) or
170                                         dberror($r, "Couldn't get events");
171                 
172                                 while (my $ref = $q->fetchrow_hashref()) {
173                                         my $id = $ref->{'id'};
174                                         my $filename = $ref->{'filename'};
175                                         my $fname = Sesse::pr0n::Common::get_disk_location($r, $id);
176                                         my (undef, undef, undef, undef, undef, undef, undef, $size, undef, $mtime) = stat($fname)
177                                                 or next;
178                                         $mtime = POSIX::strftime("%a, %d %b %Y %H:%M:%S GMT", gmtime($mtime));
179                                         my $mime_type = Sesse::pr0n::Common::get_mimetype_from_filename($filename);
180
181                                         $r->print(<<"EOF");
182   <response>
183      <href>/webdav/upload/$event/$filename</href>
184      <propstat>
185         <prop>
186           <resourcetype/>
187           <getcontenttype>$mime_type</getcontenttype>
188           <getcontentlength>$size</getcontentlength>
189           <getlastmodified>$mtime</getlastmodified>
190         </prop>
191         <status>HTTP/1.1 200 OK</status>
192      </propstat>
193   </response>
194 EOF
195                                 }
196                                 $q->finish;
197
198                                 # And the magical autorename folder
199                                 $r->print(<<"EOF");
200   <response>
201      <href>/webdav/upload/$event/autorename/</href>
202      <propstat>
203         <prop>
204           <resourcetype><collection/></resourcetype>
205           <getcontenttype>text/xml</getcontenttype>
206         </prop>
207         <status>HTTP/1.1 200 OK</status>
208      </propstat>
209   </response>
210 EOF
211                         }
212
213                         $r->print("</multistatus>\n");
214
215                         return Apache2::Const::OK;
216                 } elsif ($r->uri =~ m#^/webdav/upload/([a-zA-Z0-9-]+)/autorename/?$#) {
217                         # The autorename folder is always empty
218                         my $event = $1;
219                         
220                         $r->headers_out->{'content-location'} = "/webdav/upload/$event/autorename/";
221                         
222                         # Check that we do indeed exist
223                         my $ref = $dbh->selectrow_hashref('SELECT count(*) AS numev FROM events WHERE vhost=? AND event=?',
224                                 undef, $r->get_server_name, $event);
225                         if ($ref->{'numev'} != 1) {
226                                 $r->status(404);
227                                 $r->content_type('text/plain; charset=utf-8');
228                                 $r->print("Couldn't find event in database");
229                                 return Apache2::Const::OK;
230                         }
231                         
232                         # OK, list the (empty) directory
233                         $r->print(<<"EOF");
234 <?xml version="1.0" encoding="utf-8"?>
235 <multistatus xmlns="DAV:">
236   <response>
237      <href>/webdav/upload/$event/autorename/</href>
238      <propstat>
239         <prop>
240           <resourcetype><collection/></resourcetype>
241           <getcontenttype>text/xml</getcontenttype>
242         </prop>
243         <status>HTTP/1.1 200 OK</status>
244      </propstat>
245   </response>
246 </multistatus>
247 EOF
248         
249                         return Apache2::Const::OK;
250                 } elsif ($r->uri =~ m#^/webdav/upload/([a-zA-Z0-9-]+)/([a-zA-Z0-9._()-]+)$#) {
251                         # stat a single file
252                         my ($event, $filename) = ($1, $2);
253                         my ($fname, $size, $mtime);
254                         
255                         # check if we have a pending fake file for this
256                         my $ref = $dbh->selectrow_hashref('SELECT count(*) AS numfiles FROM fake_files WHERE event=? AND vhost=? AND filename=? AND expires_at > now()',
257                                 undef, $event, $r->get_server_name, $filename);
258                         if ($ref->{'numfiles'} == 1) {
259                                 $fname = "/dev/null";
260                                 $size = 0;
261                                 $mtime = time;
262                         } else {
263                                 ($fname, $size, $mtime) = Sesse::pr0n::Common::stat_image($r, $event, $filename);
264                         }
265                         
266                         if (!defined($fname)) {
267                                 $r->status(404);
268                                 $r->content_type('text/plain; charset=utf-8');
269                                 $r->print("Couldn't find file");
270                                 return Apache2::Const::OK;
271                         }
272                         my $mime_type = Sesse::pr0n::Common::get_mimetype_from_filename($filename);
273                         
274                         $mtime = POSIX::strftime("%a, %d %b %Y %H:%M:%S GMT", gmtime($mtime));
275                         $r->print(<<"EOF");
276 <?xml version="1.0" encoding="utf-8"?>
277 <multistatus xmlns="DAV:">
278   <response>
279     <href>/webdav/upload/$event/$filename</href>
280     <propstat>
281       <prop>
282         <resourcetype/>
283         <getcontenttype>$mime_type</getcontenttype>
284         <getcontentlength>$size</getcontentlength>
285         <getlastmodified>$mtime</getlastmodified>
286       </prop>
287       <status>HTTP/1.1 200 OK</status>
288     </propstat>
289   </response>
290 </multistatus>
291 EOF
292                         return Apache2::Const::OK;
293                 } elsif ($r->uri =~ m#^/webdav/upload/([a-zA-Z0-9-]+)/autorename/(.{1,250})$#) {
294                         # stat a single file in autorename
295                         my ($event, $filename) = ($1, $2);
296                         my ($fname, $size, $mtime);
297                         
298                         # check if we have a pending fake file for this
299                         my $ref = $dbh->selectrow_hashref('SELECT count(*) AS numfiles FROM fake_files WHERE event=? AND vhost=? AND filename=? AND expires_at > now()',
300                                 undef, $event, $r->get_server_name, $filename);
301                         if ($ref->{'numfiles'} == 1) {
302                                 $fname = "/dev/null";
303                                 $size = 0;
304                                 $mtime = time;
305                         } else {
306                                 # check if we have a "shadow file" for this
307                                 my $ref = $dbh->selectrow_hashref('SELECT id FROM shadow_files WHERE vhost=? AND event=? AND filename=? AND expires_at > now()',
308                                         undef, $r->get_server_name, $event, $filename);
309                                 if (defined($ref)) {
310                                         ($fname, $size, $mtime) = Sesse::pr0n::Common::stat_image_from_id($r, $ref->{'id'});
311                                 }
312                         }
313                         
314                         if (!defined($fname)) {
315                                 $r->status(404);
316                                 $r->content_type('text/plain; charset=utf-8');
317                                 $r->print("Couldn't find file");
318                                 return Apache2::Const::OK;
319                         }
320                         my $mime_type = Sesse::pr0n::Common::get_mimetype_from_filename($filename);
321                         
322                         $mtime = POSIX::strftime("%a, %d %b %Y %H:%M:%S GMT", gmtime($mtime));
323                         $r->print(<<"EOF");
324 <?xml version="1.0" encoding="utf-8"?>
325 <multistatus xmlns="DAV:">
326   <response>
327     <href>/webdav/upload/$event/autorename/$filename</href>
328     <propstat>
329       <prop>
330         <resourcetype/>
331         <getcontenttype>$mime_type</getcontenttype>
332         <getcontentlength>$size</getcontentlength>
333         <getlastmodified>$mtime</getlastmodified>
334       </prop>
335       <status>HTTP/1.1 200 OK</status>
336     </propstat>
337   </response>
338 </multistatus>
339 EOF
340                 } else {
341                         $r->status(404);
342                         $r->content_type('text/plain; charset=utf-8');
343                         $r->print("Couldn't find file");
344                 }
345                 return Apache2::Const::OK;
346         }
347         
348         if ($r->method eq "HEAD" or $r->method eq "GET") {
349                 if ($r->uri !~ m#^/webdav/upload/([a-zA-Z0-9-]+)/(autorename/)?(.{1,250})$#) {
350                         $r->status(404);
351                         $r->content_type('text/xml; charset=utf-8');
352                         $r->print("<?xml version=\"1.0\"?>\n<p>Couldn't find file</p>");
353                         return Apache2::Const::OK;
354                 }
355
356                 my ($event, $autorename, $filename) = ($1, $2, $3);
357                 
358                 # Check if this file really exists
359                 my ($fname, $size, $mtime);
360
361                 # check if we have a pending fake file for this
362                 my $ref = $dbh->selectrow_hashref('SELECT count(*) AS numfiles FROM fake_files WHERE event=? AND vhost=? AND filename=? AND expires_at > now()',
363                         undef, $event, $r->get_server_name, $filename);
364                 if ($ref->{'numfiles'} == 1) {
365                         $fname = "/dev/null";
366                         $size = 0;
367                         $mtime = time;
368                 } else {
369                         # check if we have a "shadow file" for this
370                         if (defined($autorename) && $autorename eq "autorename/") {
371                                 my $ref = $dbh->selectrow_hashref('SELECT id FROM shadow_files WHERE host=? AND event=? AND filename=? AND expires_at > now()',
372                                         undef, $r->get_server_name, $event, $filename);
373                                 if (defined($ref)) {
374                                         ($fname, $size, $mtime) = Sesse::pr0n::Common::stat_image_from_id($r, $ref->{'id'});
375                                 }
376                         } elsif (!defined($fname)) {
377                                 ($fname, $size, $mtime) = Sesse::pr0n::Common::stat_image($r, $event, $filename);
378                         }
379                 }
380                 
381                 if (!defined($fname)) {
382                         $r->status(404);
383                         $r->content_type('text/plain; charset=utf-8');
384                         $r->print("Couldn't find file");
385                         return Apache2::Const::OK;
386                 }
387                 
388                 $r->status(200);
389                 $r->set_content_length($size);
390                 $r->set_last_modified($mtime);
391         
392                 if ($r->method eq "GET") {
393                         $r->sendfile($fname);
394                 }
395                 return Apache2::Const::OK;
396         }
397         
398         if ($r->method eq "PUT") {
399                 if ($r->uri !~ m#^/webdav/upload/([a-zA-Z0-9-]+)/(autorename/)?(.{1,250})$#) {
400                         $r->status(403);
401                         $r->content_type('text/plain; charset=utf-8');
402                         $r->print("No access");
403                         return Apache2::Const::OK;
404                 }
405                 
406                 my ($event, $autorename, $filename) = ($1, $2, $3);
407                 my $size = $r->headers_in->{'content-length'};
408                 if (!defined($size)) {
409                         $size = $r->headers_in->{'x-expected-entity-length'};
410                 }
411                 my $orig_filename = $filename;
412
413                 # Remove evil characters
414                 if ($filename =~ /[^a-zA-Z0-9._()-]/) {
415                         if (defined($autorename) && $autorename eq "autorename/") {
416                                 $filename =~ tr/a-zA-Z0-9.()-/_/c;
417                         } else {
418                                 $r->status(403);
419                                 $r->content_type('text/plain; charset=utf-8');
420                                 $r->print("Illegal characters in filename");
421                                 return Apache2::Const::OK;
422                         }
423                 }
424                 
425                 #
426                 # gnome-vfs and mac os x love to make zero-byte files,
427                 # make them happy
428                 # 
429                 if ($size == 0 || $filename =~ /^\.(_|DS_Store)/) {
430                         $dbh->do('DELETE FROM fake_files WHERE expires_at <= now() OR (event=? AND vhost=? AND filename=?);',
431                                 undef, $event, $r->get_server_name, $filename)
432                                 or dberror($r, "Couldn't prune fake_files");
433                         $dbh->do('INSERT INTO fake_files (vhost,event,filename,expires_at) VALUES (?,?,?,now() + interval \'1 day\');',
434                                 undef, $r->get_server_name, $event, $filename)
435                                 or dberror($r, "Couldn't add file");
436                         $r->content_type('text/plain; charset="utf-8"');
437                         $r->status(201);
438                         $r->print("OK");
439                         $r->log->info("Fake upload of $event/$filename");
440                         return Apache2::Const::OK;
441                 }
442                         
443                 # Get the new ID
444                 my $ref = $dbh->selectrow_hashref("SELECT NEXTVAL('imageid_seq') AS id;");
445                 my $newid = $ref->{'id'};
446                 if (!defined($newid)) {
447                         dberror($r, "Couldn't get new ID");
448                 }
449                 
450                 # Autorename if we need to
451                 $ref = $dbh->selectrow_hashref("SELECT COUNT(*) AS numfiles FROM images WHERE vhost=? AND event=? AND filename=?",
452                                                undef, $r->get_server_name, $event, $filename)
453                         or dberror($r, "Couldn't check for existing files");
454                 if ($ref->{'numfiles'} > 0) {
455                         if (defined($autorename) && $autorename eq "autorename/") {
456                                 $r->log->info("Renaming $filename to $newid.jpeg");
457                                 $filename = "$newid.jpeg";
458                         } else {
459                                 $r->status(403);
460                                 $r->content_type('text/plain; charset=utf-8');
461                                 $r->print("File $filename already exists in event $event, cannot overwrite");
462                                 return Apache2::Const::OK;
463                         }
464                 }
465                 
466                 {
467                         # Enable transactions and error raising temporarily
468                         local $dbh->{AutoCommit} = 0;
469                         local $dbh->{RaiseError} = 1;
470                         my $fname;
471
472                         # Try to insert this new file
473                         eval {
474                                 $dbh->do('DELETE FROM fake_files WHERE vhost=? AND event=? AND filename=?',
475                                         undef, $r->get_server_name, $event, $filename);
476                                         
477                                 $dbh->do('INSERT INTO images (id,vhost,event,uploadedby,takenby,filename) VALUES (?,?,?,?,?,?)',
478                                         undef, $newid, $r->get_server_name, $event, $user, $takenby, $filename);
479                                 Sesse::pr0n::Common::purge_cache($r, "/$event/");
480
481                                 # Now save the file to disk
482                                 $fname = Sesse::pr0n::Common::get_disk_location($r, $newid);
483                                 open NEWFILE, ">$fname"
484                                         or die "$fname: $!";
485
486                                 my $buf;
487                                 if ($r->read($buf, $size)) {
488                                         print NEWFILE $buf or die "write($fname): $!";
489                                 }
490
491                                 close NEWFILE or die "close($fname): $!";
492                                 
493                                 # Orient stuff correctly
494                                 system("/usr/bin/exifautotran", $fname) == 0
495                                         or die "/usr/bin/exifautotran: $!";
496
497                                 # Make cache while we're at it.
498                                 # Don't do it for the resource forks Mac OS X loves to upload :-(
499                                 if ($filename !~ /^\.(_|DS_Store)/) {
500                                         # FIXME: Ideally we'd want to ensure cache of -1x-1 here as well (for NEFs), but that would
501                                         # preclude mipmapping in its current form.
502                                         Sesse::pr0n::Common::ensure_cached($r, $filename, $newid, undef, undef, "nobox", 80, 64, 320, 256);
503                                 }
504                                 
505                                 # OK, we got this far, commit
506                                 $dbh->commit;
507
508                                 $r->log->notice("Successfully wrote $event/$filename to $fname");
509                         };
510                         if ($@) {
511                                 # Some error occurred, rollback and bomb out
512                                 $dbh->rollback;
513                                 error($r, "Transaction aborted because $@");
514                                 unlink($fname);
515                         }
516                 }
517
518                 # Insert a `shadow file' we can stat the next day or so
519                 if (defined($autorename) && $autorename eq "autorename/") {
520                         $dbh->do('DELETE FROM shadow_files WHERE expires_at <= now() OR (vhost=? AND event=? AND filename=?);',
521                                 undef, $r->get_server_name, $event, $filename)
522                                 or dberror($r, "Couldn't prune shadow_files");
523                         $dbh->do('INSERT INTO shadow_files (vhost,event,filename,id,expires_at) VALUES (?,?,?,?,now() + interval \'1 day\');',
524                                 undef, $r->get_server_name, $event, $orig_filename, $newid)
525                                 or dberror($r, "Couldn't add shadow file");
526                         $r->log->info("Added shadow entry for $event/$filename");
527                 }
528
529                 $r->content_type('text/plain; charset="utf-8"');
530                 $r->status(201);
531                 $r->print("OK");
532
533                 return Apache2::Const::OK;
534         }
535         
536         # Used by the XP publishing wizard -- largely the same as the code above
537         # but vastly simplified. Should we refactor?
538         if ($r->method eq "POST") {
539                 my $apr = Apache2::Request->new($r);
540                 my $client_size = $apr->param('size');
541                 my $event = $apr->param('event');
542                                 
543                 my $file = $apr->upload('image');
544                 my $filename = $file->filename();
545                 if ($client_size != $file->size()) {
546                         $r->content_type('text/plain; charset="utf-8"');
547                         $r->status(403);
548                         $r->print("Client-size resizing detected; refusing automatically");
549
550                         $r->log->info("Client-size resized upload of $event/$filename detected");
551                         return Apache2::Const::OK;
552                 }
553                 
554                 # Ugh, Windows XP seems to be sending this in... something that's not UTF-8, at least
555                 my $takenby_given = Sesse::pr0n::Common::guess_charset($apr->param('takenby'));
556
557                 if (defined($takenby_given) && $takenby_given !~ /^\s*$/ && $takenby_given !~ /[<>&]/ && length($takenby_given) <= 100) {
558                         $takenby = $takenby_given;
559                 }
560                 
561                 my $ne_id = Sesse::pr0n::Common::guess_charset($apr->param('neweventid'));
562                 my $ne_date = Sesse::pr0n::Common::guess_charset($apr->param('neweventdate'));
563                 my $ne_desc = Sesse::pr0n::Common::guess_charset($apr->param('neweventdesc'));
564                 if (defined($ne_id)) {
565                         # Trying to add a new event, let's see if it already exists
566                         my $q = $dbh->prepare('SELECT COUNT(*) AS cnt FROM events WHERE event=? AND vhost=?')
567                                 or dberror($r, "Couldn't prepare event count");
568                         $q->execute($ne_id, $r->get_server_name)
569                                 or dberror($r, "Couldn't execute event count");
570                         my $ref = $q->fetchrow_hashref;
571
572                         if ($ref->{'cnt'} == 0) {
573                                 my @errors = Sesse::pr0n::Common::add_new_event($r, $dbh, $ne_id, $ne_date, $ne_desc);
574                                 if (scalar @errors > 0) {
575                                         die "Couldn't add new event $ne_id: " . join(', ', @errors);
576                                 }
577                         }
578
579                         $event = $ne_id;
580                 }
581
582                 # Remove evil characters
583                 if ($filename =~ /[^a-zA-Z0-9._-]/) {
584                         $filename =~ tr/a-zA-Z0-9.-/_/c;
585                 }
586                 
587                 # Get the new ID
588                 my $ref = $dbh->selectrow_hashref("SELECT NEXTVAL('imageid_seq') AS id;");
589                 my $newid = $ref->{'id'};
590                 if (!defined($newid)) {
591                         dberror($r, "Couldn't get new ID");
592                 }
593                 
594                 # Autorename if we need to
595                 {
596                         my $ref = $dbh->selectrow_hashref("SELECT COUNT(*) AS numfiles FROM images WHERE vhost=? AND event=? AND filename=?",
597                                 undef, $r->get_server_name, $event, $filename)
598                                 or dberror($r, "Couldn't check for existing files");
599                         if ($ref->{'numfiles'} > 0) {
600                                 $r->log->info("Renaming $filename to $newid.jpeg");
601                                 $filename = "$newid.jpeg";
602                         }
603                 }
604                 
605                 {
606                         # Enable transactions and error raising temporarily
607                         local $dbh->{AutoCommit} = 0;
608                         local $dbh->{RaiseError} = 1;
609                         my $fname;
610
611                         # Try to insert this new file
612                         eval {
613                                 $dbh->do('INSERT INTO images (id,vhost,event,uploadedby,takenby,filename) VALUES (?,?,?,?,?,?)',
614                                         undef, $newid, $r->get_server_name, $event, $user, $takenby, $filename);
615
616                                 # Now save the file to disk
617                                 $fname = Sesse::pr0n::Common::get_disk_location($r, $newid);
618                                 open NEWFILE, ">$fname"
619                                         or die "$fname: $!";
620
621                                 my $buf;
622                                 $file->slurp($buf);
623                                 print NEWFILE $buf or die "write($fname): $!";
624                                 close NEWFILE or die "close($fname): $!";
625                                 
626                                 # Orient stuff correctly
627                                 system("/usr/bin/exifautotran", $fname) == 0
628                                         or die "/usr/bin/exifautotran: $!";
629
630                                 # Make cache while we're at it.
631                                 Sesse::pr0n::Common::ensure_cached($r, $filename, $newid, undef, undef, 1, 80, 64, 320, 256, -1, -1);
632                                 
633                                 # OK, we got this far, commit
634                                 $dbh->commit;
635
636                                 $r->log->notice("Successfully wrote $event/$filename to $fname");
637                         };
638                         if ($@) {
639                                 # Some error occurred, rollback and bomb out
640                                 $dbh->rollback;
641                                 error($r, "Transaction aborted because $@");
642                                 unlink($fname);
643                 
644                                 $r->content_type('text/plain; charset="utf-8"');
645                                 $r->status(500);
646                                 $r->print("Error: $@");
647                         }
648                 }
649
650                 $r->content_type('text/plain; charset="utf-8"');
651                 $r->status(201);
652                 $r->print("OK");
653
654                 return Apache2::Const::OK;
655         }
656         
657         # Yes, we fake locks. :-)
658         if ($r->method eq "LOCK") {
659                 if ($r->uri !~ m#^/webdav/upload/([a-zA-Z0-9-]+)/(autorename/)?([a-zA-Z0-9._-]+)$#) {
660                         $r->status(403);
661                         $r->content_type('text/plain; charset=utf-8');
662                         $r->print("No access");
663                         return Apache2::Const::OK;
664                 }
665
666                 my ($event, $autorename, $filename) = ($1, $2, $3);
667                 $autorename = '' if (!defined($autorename));
668                 my $sha1 = Digest::SHA1::sha1_base64("/$event/$autorename$filename");
669
670                 $r->status(200);
671                 $r->content_type('text/xml; charset=utf-8');
672
673                 $r->print(<<"EOF");
674 <?xml version="1.0" encoding="utf-8"?>
675 <prop xmlns="DAV:">
676   <lockdiscovery>
677     <activelock>
678       <locktype><write/></locktype>
679       <lockscope><exclusive/></lockscope>
680       <depth>0</depth>
681       <owner>
682         <href>/webdav/upload/$event/$autorename$filename</href>
683       </owner>
684       <timeout>Second-3600</timeout>
685       <locktoken>
686         <href>opaquelocktoken:$sha1</href>
687       </locktoken>
688     </activelock>
689   </lockdiscovery>
690 </prop>
691 EOF
692                 return Apache2::Const::OK;
693         }
694         
695         if ($r->method eq "UNLOCK") {
696                 $r->content_type('text/plain; charset="utf-8"');
697                 $r->status(200);
698                 $r->print("OK");
699
700                 return Apache2::Const::OK;
701         }
702
703         if ($r->method eq "DELETE") {
704                 if ($r->uri !~ m#^/webdav/upload/([a-zA-Z0-9-]+)/(autorename/)?(\._[a-zA-Z0-9._-]+)$#) {
705                         $r->status(403);
706                         $r->content_type('text/plain; charset=utf-8');
707                         $r->print("No access");
708                         return Apache2::Const::OK;
709                 }
710                 
711                 my ($event, $autorename, $filename) = ($1, $2, $3);
712                 $dbh->do('DELETE FROM images WHERE vhost=? AND event=? AND filename=?',
713                         undef, $r->get_server_name, $event, $filename)
714                         or dberror($r, "Couldn't remove file");
715                 $dbh->do('UPDATE last_picture_cache SET last_update=CURRENT_TIMESTAMP WHERE vhost=? AND event=?',
716                         undef, $r->get_server_name, $event)
717                         or dberror($r, "Couldn't invalidate cache");
718                 $r->status(200);
719                 $r->print("OK");
720
721                 $r->log->info("deleted $event/$filename");
722                 
723                 return Apache2::Const::OK;
724         }
725         
726         if ($r->method eq "MOVE" or
727             $r->method eq "MKCOL" or
728             $r->method eq "RMCOL" or
729             $r->method eq "RENAME" or
730             $r->method eq "COPY") {
731                 $r->content_type('text/plain; charset="utf-8"');
732                 $r->status(403);
733                 $r->print("Sorry, you do not have access to that feature.");
734                 return Apache2::Const::OK;
735         }
736
737         $r->content_type('text/plain; charset=utf-8');
738         $r->log->error("unknown method " . $r->method);
739         $r->status(500);
740         $r->print("Unknown method");
741         
742         return Apache2::Const::OK;
743 }
744
745 1;
746
747