1 package Sesse::pr0n::Common;
5 use Sesse::pr0n::Overload;
6 use Sesse::pr0n::QscaleProxy;
7 use Sesse::pr0n::Templates;
9 use Apache2::RequestRec (); # for $r->content_type
10 use Apache2::RequestIO (); # for $r->print
11 use Apache2::Const -compile => ':common';
23 use Digest::HMAC_SHA1;
35 our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
37 use Sesse::pr0n::Config;
39 require Sesse::pr0n::Config_local;
44 @EXPORT = qw(&error &dberror);
46 @EXPORT_OK = qw(&error &dberror);
48 our $dbh = DBI->connect("dbi:Pg:dbname=pr0n;host=" . $Sesse::pr0n::Config::db_host,
49 $Sesse::pr0n::Config::db_username, $Sesse::pr0n::Config::db_password)
50 or die "Couldn't connect to PostgreSQL database: " . DBI->errstr;
51 our $mimetypes = new MIME::Types;
53 Apache2::ServerUtil->server->log_error("Initializing pr0n $VERSION");
60 our ($dbh, $mimetypes);
63 my ($r,$err,$status,$title) = @_;
65 if (!defined($status) || !defined($title)) {
67 $title = "Internal server error";
70 $r->content_type('text/html; charset=utf-8');
74 $r->print(" <p>Error: $err</p>\n");
78 $r->log->error("Stack trace follows: " . Carp::longmess());
80 ModPerl::Util::exit();
85 error($r, "$err (DB error: " . $dbh->errstr . ")");
91 $r->content_type("text/html; charset=utf-8");
93 # Fetch quote if we're itk-bilder.samfundet.no
95 if ($r->get_server_name eq 'itk-bilder.samfundet.no') {
96 $quote = LWP::Simple::get("http://itk.samfundet.no/include/quotes.cli.php");
97 $quote = "Error: Could not fetch quotes." if (!defined($quote));
99 Sesse::pr0n::Templates::print_template($r, "header", { title => $title, quotes => Encode::decode_utf8($quote) });
104 Sesse::pr0n::Templates::print_template($r, "footer",
105 { version => $Sesse::pr0n::Common::VERSION });
109 my ($width, $height, $thumbxres, $thumbyres) = @_;
111 unless ($thumbxres >= $width &&
112 $thumbyres >= $height) {
113 my $sfh = $width / $thumbxres;
114 my $sfv = $height / $thumbyres;
122 $width = POSIX::floor($width);
123 $height = POSIX::floor($height);
126 return ($width, $height);
129 sub get_query_string {
130 my ($param, $defparam) = @_;
134 while (my ($key, $value) = each %$param) {
135 next unless defined($value);
136 next if (defined($defparam->{$key}) && $value == $defparam->{$key});
138 $value = pretty_escape($value);
140 $str .= ($first) ? "?" : ';';
141 $str .= "$key=$value";
147 # This is not perfect (it can't handle "_ " right, for one), but it will do for now
148 sub weird_space_encode {
151 return "_" x (length($val) * 2);
153 return "_" x (length($val) * 2 - 1);
157 sub weird_space_unencode {
159 if (length($val) % 2 == 0) {
160 return "_" x (length($val) / 2);
162 return " " x ((length($val) + 1) / 2);
169 $value =~ s/(([_ ])\2*)/weird_space_encode($1)/ge;
170 $value = URI::Escape::uri_escape($value);
171 $value =~ s/%2F/\//g;
176 sub pretty_unescape {
179 # URI unescaping is already done for us
180 $value =~ s/(_+)/weird_space_unencode($1)/ge;
186 my ($r, $title, $baseurl, $param, $defparam, $accesskey) = @_;
187 my $str = "<a href=\"$baseurl" . get_query_string($param, $defparam) . "\"";
188 if (defined($accesskey) && length($accesskey) == 1) {
189 $str .= " accesskey=\"$accesskey\"";
191 $str .= ">$title</a>";
196 # Check that we are alive
197 if (!(defined($dbh) && $dbh->ping)) {
199 Apache2::ServerUtil->server->log_error("Lost contact with PostgreSQL server, trying to reconnect...");
200 unless ($dbh = DBI->connect("dbi:Pg:dbname=pr0n;host=" . $Sesse::pr0n::Config::db_host,
201 $Sesse::pr0n::Config::db_username, $Sesse::pr0n::Config::db_password)) {
203 die "Couldn't connect to PostgreSQL database";
212 return $r->dir_config('ImageBase');
215 sub get_disk_location {
217 my $dir = POSIX::floor($id / 256);
218 return get_base($r) . "images/$dir/$id.jpg";
221 sub get_cache_location {
222 my ($r, $id, $width, $height, $infobox) = @_;
223 my $dir = POSIX::floor($id / 256);
225 if ($infobox eq 'both') {
226 return get_base($r) . "cache/$dir/$id-$width-$height.jpg";
227 } elsif ($infobox eq 'nobox') {
228 return get_base($r) . "cache/$dir/$id-$width-$height-nobox.jpg";
230 return get_base($r) . "cache/$dir/$id-$width-$height-box.png";
234 sub get_mipmap_location {
235 my ($r, $id, $width, $height) = @_;
236 my $dir = POSIX::floor($id / 256);
238 return get_base($r) . "cache/$dir/$id-mipmap-$width-$height.jpg";
241 sub update_image_info {
242 my ($r, $id, $width, $height) = @_;
244 # Also find the date taken if appropriate (from the EXIF tag etc.)
245 my $exiftool = Image::ExifTool->new;
246 $exiftool->ExtractInfo(get_disk_location($r, $id));
247 my $info = $exiftool->GetInfo();
248 my $datetime = undef;
250 if (defined($info->{'DateTimeOriginal'})) {
251 # Parse the date and time over to ISO format
252 if ($info->{'DateTimeOriginal'} =~ /^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)(?:\+\d\d:\d\d)?$/ && $1 > 1990) {
253 $datetime = "$1-$2-$3 $4:$5:$6";
258 local $dbh->{AutoCommit} = 0;
261 $dbh->do('DELETE FROM exif_info WHERE image=?',
263 or die "Couldn't delete old EXIF information in SQL: $!";
265 my $q = $dbh->prepare('INSERT INTO exif_info (image,key,value) VALUES (?,?,?)')
266 or die "Couldn't prepare inserting EXIF information: $!";
268 for my $key (keys %$info) {
269 next if ref $info->{$key};
270 $q->execute($id, $key, guess_charset($info->{$key}))
271 or die "Couldn't insert EXIF information in database: $!";
275 my $model = $exiftool->GetValue('Model', 'PrintConv');
276 my $lens = $exiftool->GetValue('Lens', 'PrintConv');
277 $lens = $exiftool->GetValue('LensSpec', 'PrintConv') if (!defined($lens));
281 $model = undef if (length($model) == 0);
285 $lens = undef if (length($lens) == 0);
287 # Now update the main table with the information we've got
288 $dbh->do('UPDATE images SET width=?, height=?, date=?, model=?, lens=? WHERE id=?',
289 undef, $width, $height, $datetime, $model, $lens, $id)
290 or die "Couldn't update width/height in SQL: $!";
293 my @tags = $exiftool->GetValue('Keywords', 'ValueConv');
294 $dbh->do('DELETE FROM tags WHERE image=?',
296 or die "Couldn't delete old tag information in SQL: $!";
298 $q = $dbh->prepare('INSERT INTO tags (image,tag) VALUES (?,?)')
299 or die "Couldn't prepare inserting tag information: $!";
302 for my $tag (@tags) {
303 $q->execute($id, guess_charset($tag))
304 or die "Couldn't insert tag information in database: $!";
307 # update the last_picture cache as well (this should of course be done
308 # via a trigger, but this is less complicated :-) )
309 $dbh->do('UPDATE last_picture_cache SET last_picture=GREATEST(last_picture, ?) WHERE (vhost,event)=(SELECT vhost,event FROM images WHERE id=?)',
310 undef, $datetime, $id)
311 or die "Couldn't update last_picture in SQL: $!";
318 #return qw(sesse Sesse);
320 my $auth = $r->headers_in->{'authorization'};
321 if (!defined($auth)) {
325 $r->log->warn("Auth: $auth");
326 if ($auth =~ /^Basic ([a-zA-Z0-9+\/]+=*)$/) {
327 return check_basic_auth($r, $1);
329 if ($auth =~ /^Digest (.*)$/) {
330 return check_digest_auth($r, $1);
337 my ($r, %options) = @_;
338 $r->content_type('text/plain; charset=utf-8');
340 $r->headers_out->{'www-authenticate'} = 'Basic realm="pr0n.sesse.net"';
342 if ($options{'DigestAuth'} // 1) {
343 # We make our nonce similar to the scheme of RFC2069 section 2.1.1,
344 # with some changes: We don't care about client IP (these have a nasty
345 # tendency to change from request to request when load-balancing
346 # proxies etc. are being used), and we use HMAC instead of simple
347 # hashing simply because that's a better signing method.
349 # NOTE: For some weird reason, Digest::HMAC_SHA1 doesn't like taking
350 # the output from time directly (it gives a different response), so we
351 # forcefully stringify the argument.
353 my $nonce = Digest::HMAC_SHA1->hmac_sha1_hex($ts . "", $Sesse::pr0n::Config::db_password);
354 my $stale_nonce_text = "";
355 $stale_nonce_text = ", stale=\"true\"" if ($options{'StaleNonce'} // 0);
357 $r->headers_out->{'www-authenticate'} =
358 "Digest realm=\"pr0n.sesse.net\", " .
359 "nonce=\"$nonce\", " .
361 "qop=\"auth\"" . $stale_nonce_text; # FIXME: support auth-int
364 $r->print("Need authorization\n");
367 sub check_basic_auth {
370 my ($raw_user, $pass) = split /:/, MIME::Base64::decode_base64($auth);
371 my ($user, $takenby) = extract_takenby($raw_user);
374 $pass = Digest::SHA1::sha1_base64($pass);
375 my $ref = $dbh->selectrow_hashref('SELECT count(*) AS auth FROM users WHERE username=? AND sha1password=? AND vhost=?',
376 undef, $user, $pass, $r->get_server_name);
377 if ($ref->{'auth'} != 1) {
378 $r->content_type('text/plain; charset=utf-8');
379 $r->log->warn("Authentication failed for $user/$takenby");
384 $r->log->info("Authentication succeeded for $user/$takenby");
386 return ($user, $takenby);
389 sub check_digest_auth {
392 # We're a bit more liberal than RFC2069 in the parsing here, allowing
393 # quoted strings everywhere.
395 while ($auth =~ s/^ ([a-zA-Z]+) # key
398 [^",]* # either something that doesn't contain comma or quotes
400 " ( [^"\\] | \\ . ) * " # or a full quoted string
402 (?: (?: , \s* ) + | $ ) # delimiter(s), or end of string
404 my ($key, $value) = ($1, $2);
405 if ($value =~ /^"(.*)"$/) {
407 $value =~ s/\\(.)/$1/g;
409 $auth{$key} = $value;
411 unless (exists($auth{'username'}) &&
412 exists($auth{'uri'}) &&
413 exists($auth{'nonce'}) &&
414 exists($auth{'opaque'}) &&
415 exists($auth{'response'})) {
419 if ($r->uri ne $auth{'uri'}) {
424 # Verify that the opaque data does indeed look like a timestamp, and that the nonce
425 # is indeed a signed version of it.
426 if ($auth{'opaque'} !~ /^\d+$/) {
430 my $compare_nonce = Digest::HMAC_SHA1->hmac_sha1_hex($auth{'opaque'}, $Sesse::pr0n::Config::db_password);
431 if ($auth{'nonce'} ne $compare_nonce) {
436 # Now look up the user's HA1 from the database, and calculate HA2.
437 my ($user, $takenby) = extract_takenby($auth{'username'});
438 my $ref = $dbh->selectrow_hashref('SELECT digest_ha1_hex FROM users WHERE username=? AND vhost=?',
439 undef, $user, $r->get_server_name);
440 if (!defined($ref)) {
444 if (!defined($ref->{'digest_ha1_hex'}) || $ref->{'digest_ha1_hex'} !~ /^[0-9a-f]{32}$/) {
445 # A user that exists but has empty HA1 is a user that's not
446 # ready for digest auth, so we hack it and resend 401,
447 # only this time without digest auth.
448 output_401($r, DigestAuth => 0);
451 my $ha1 = $ref->{'digest_ha1_hex'};
452 my $ha2 = Digest::MD5::md5_hex($r->method . ':' . $auth{'uri'});
454 if (exists($auth{'qop'}) && $auth{'qop'} eq 'auth') {
455 unless (exists($auth{'nc'}) && exists($auth{'cnonce'})) {
461 $response .= ':' . $auth{'nonce'};
462 $response .= ':' . $auth{'nc'};
463 $response .= ':' . $auth{'cnonce'};
464 $response .= ':' . $auth{'qop'};
465 $response .= ':' . $ha2;
468 $response .= ':' . $auth{'nonce'};
469 $response .= ':' . $ha2;
471 if ($auth{'response'} ne Digest::MD5::md5_hex($response)) {
476 # OK, everything is good, and there's only one thing we need to check: That the nonce
477 # isn't too old. If it is, but everything else is ok, we tell the browser that and it
478 # will re-encrypt with the new nonce.
479 my $timediff = time - $auth{'opaque'};
480 if ($timediff < 0 || $timediff > 300) {
481 output_401($r, StaleNonce => 1);
485 return ($user, $takenby);
488 sub extract_takenby {
491 # WinXP is stupid :-)
492 if ($user =~ /^.*\\(.*)$/) {
497 if ($user =~ /^([a-zA-Z0-9^_-]+)\@([a-zA-Z0-9^_-]+)$/) {
501 ($takenby = $user) =~ s/^([a-zA-Z])/uc($1)/e;
504 return ($user, $takenby);
508 my ($r, $event, $filename) = (@_);
509 my $ref = $dbh->selectrow_hashref(
510 'SELECT id FROM images WHERE event=? AND filename=?',
511 undef, $event, $filename);
512 if (!defined($ref)) {
513 return (undef, undef, undef);
515 return stat_image_from_id($r, $ref->{'id'});
518 sub stat_image_from_id {
521 my $fname = get_disk_location($r, $id);
522 my (undef, undef, undef, undef, undef, undef, undef, $size, undef, $mtime) = stat($fname)
523 or return (undef, undef, undef);
525 return ($fname, $size, $mtime);
528 # Takes in an image ID and a set of resolutions, and returns (generates if needed)
529 # the smallest mipmap larger than the largest of them.
531 my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, @res) = @_;
532 my ($img, $mmimg, $width, $height);
534 my $physical_fname = get_disk_location($r, $id);
536 # If we don't know the size, we'll need to read it in anyway
537 if (!defined($dbwidth) || !defined($dbheight)) {
538 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
539 $width = $img->Get('columns');
540 $height = $img->Get('rows');
546 # Generate the list of mipmaps
549 my $mmwidth = $width;
550 my $mmheight = $height;
552 while ($mmwidth > 1 || $mmheight > 1) {
553 my $new_mmwidth = POSIX::floor($mmwidth / 2);
554 my $new_mmheight = POSIX::floor($mmheight / 2);
556 $new_mmwidth = 1 if ($new_mmwidth < 1);
557 $new_mmheight = 1 if ($new_mmheight < 1);
559 my $large_enough = 1;
560 for my $i (0..($#res/2)) {
561 my ($xres, $yres) = ($res[$i*2], $res[$i*2+1]);
562 if ($xres == -1 || $xres > $new_mmwidth || $yres > $new_mmheight) {
568 last if (!$large_enough);
570 $mmwidth = $new_mmwidth;
571 $mmheight = $new_mmheight;
573 push @mmlist, [ $mmwidth, $mmheight ];
576 # Ensure that all of them are OK
577 my $last_good_mmlocation;
578 for my $i (0..$#mmlist) {
579 my $last = ($i == $#mmlist);
580 my $mmres = $mmlist[$i];
582 my $mmlocation = get_mipmap_location($r, $id, $mmres->[0], $mmres->[1]);
583 if (! -r $mmlocation or (-M $mmlocation > -M $physical_fname)) {
584 if (!defined($img)) {
585 if (defined($last_good_mmlocation)) {
586 if ($can_use_qscale) {
587 $img = Sesse::pr0n::QscaleProxy->new;
589 $img = Image::Magick->new;
591 $img->Read($last_good_mmlocation);
593 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
600 $cimg = $img->Clone();
602 $r->log->info("Making mipmap for $id: " . $mmres->[0] . " x " . $mmres->[1]);
603 $cimg->Resize(width=>$mmres->[0], height=>$mmres->[1], filter=>'Lanczos', 'sampling-factor'=>'1x1');
605 my $err = $cimg->write(
606 filename => $mmlocation,
608 'sampling-factor' => '1x1'
612 $last_good_mmlocation = $mmlocation;
614 if ($last && !defined($img)) {
615 # OK, read in the smallest one
616 if ($can_use_qscale) {
617 $img = Sesse::pr0n::QscaleProxy->new;
619 $img = Image::Magick->new;
621 my $err = $img->Read($mmlocation);
625 if (!defined($img)) {
626 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
631 sub read_original_image {
632 my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale) = @_;
634 my $physical_fname = get_disk_location($r, $id);
636 # Read in the original image
638 if ($can_use_qscale && ($filename =~ /\.jpeg$/i || $filename =~ /\.jpg$/i)) {
639 $magick = Sesse::pr0n::QscaleProxy->new;
641 $magick = Image::Magick->new;
645 # ImageMagick can handle NEF files, but it does it by calling dcraw as a delegate.
646 # The delegate support is rather broken and causes very odd stuff to happen when
647 # more than one thread does this at the same time. Thus, we simply do it ourselves.
648 if ($filename =~ /\.(nef|cr2)$/i) {
649 # this would suffice if ImageMagick gets to fix their handling
650 # $physical_fname = "NEF:$physical_fname";
652 open DCRAW, "-|", "dcraw", "-w", "-c", $physical_fname
653 or error("dcraw: $!");
654 $err = $magick->Read(file => \*DCRAW);
657 # We always want YCbCr JPEGs. Setting this explicitly here instead of using
658 # RGB is slightly faster (no colorspace conversion needed) and works equally
659 # well for our uses, as long as we don't need to draw an information box,
660 # which trickles several ImageMagick bugs related to colorspace handling.
661 # (Ideally we'd be able to keep the image subsampled and
662 # planar, but that would probably be difficult for ImageMagick to expose.)
664 # $magick->Set(colorspace=>'YCbCr');
666 $err = $magick->Read($physical_fname);
670 $r->log->warn("$physical_fname: $err");
674 error($r, "$physical_fname: $err");
678 # If we use ->[0] unconditionally, text rendering (!) seems to crash
683 $img = (scalar @$magick > 1) ? $magick->[0] : $magick;
686 my $width = $img->Get('columns');
687 my $height = $img->Get('rows');
689 # Update the SQL database if it doesn't contain the required info
690 if (!defined($dbwidth) || !defined($dbheight)) {
691 $r->log->info("Updating width/height for $id: $width x $height");
692 update_image_info($r, $id, $width, $height);
699 my ($r, $filename, $id, $dbwidth, $dbheight, $infobox, $xres, $yres, @otherres) = @_;
701 my $fname = get_disk_location($r, $id);
702 if ($infobox ne 'box') {
703 unless (defined($xres) && (!defined($dbwidth) || !defined($dbheight) || $xres < $dbheight || $yres < $dbwidth || $xres == -1)) {
704 return ($fname, undef);
708 my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
710 if (! -r $cachename or (-M $cachename > -M $fname)) {
711 # If we are in overload mode (aka Slashdot mode), refuse to generate
713 if (Sesse::pr0n::Overload::is_in_overload($r)) {
714 $r->log->warn("In overload mode, not scaling $id to $xres x $yres");
715 error($r, 'System is in overload mode, not doing any scaling');
718 # If we're being asked for just the box, make a new image with just the box.
719 # We don't care about @otherres since each of these images are
720 # already pretty cheap to generate, but we need the exact width so we can make
721 # one in the right size.
722 if ($infobox eq 'box') {
723 my ($img, $width, $height);
725 # This is slow, but should fortunately almost never happen, so don't bother
727 if (!defined($dbwidth) || !defined($dbheight)) {
728 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, 0);
729 $width = $img->Get('columns');
730 $height = $img->Get('rows');
733 $img = Image::Magick->new;
738 if (defined($xres) && defined($yres)) {
739 ($width, $height) = scale_aspect($width, $height, $xres, $yres);
742 $img->Set(size=>($width . "x" . $height));
743 $img->Read('xc:white');
745 my $info = Image::ExifTool::ImageInfo($fname);
746 if (make_infobox($img, $info, $r)) {
747 $img->Quantize(colors=>16, dither=>'False');
749 # Since the image is grayscale, ImageMagick overrides us and writes this
750 # as grayscale anyway, but at least we get rid of the alpha channel this
752 $img->Set(type=>'Palette');
754 # Not enough room for the text, make a tiny dummy transparent infobox
756 $img->Set(size=>"1x1");
763 $err = $img->write(filename => $cachename, quality => 90, depth => 8);
764 $r->log->info("New infobox cache: $width x $height for $id.jpg");
766 return ($cachename, 'image/png');
769 my $can_use_qscale = 0;
770 if ($infobox eq 'nobox') {
774 my $img = make_mipmap($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, $xres, $yres, @otherres);
776 while (defined($xres) && defined($yres)) {
777 my ($nxres, $nyres) = (shift @otherres, shift @otherres);
778 my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
781 if (defined($nxres) && defined($nyres)) {
782 # we have more resolutions to scale, so don't throw
784 $cimg = $img->Clone();
789 my $width = $img->Get('columns');
790 my $height = $img->Get('rows');
791 my ($nwidth, $nheight) = scale_aspect($width, $height, $xres, $yres);
793 # Use lanczos (sharper) for heavy scaling, mitchell (faster) otherwise
794 my $filter = 'Mitchell';
798 if ($width / $nwidth > 8.0 || $height / $nheight > 8.0) {
805 $cimg->Resize(width=>$nwidth, height=>$nheight, filter=>$filter, 'sampling-factor'=>$sf);
808 if (($nwidth >= 800 || $nheight >= 600 || $xres == -1) && $infobox ne 'nobox') {
809 my $info = Image::ExifTool::ImageInfo($fname);
810 make_infobox($cimg, $info, $r);
813 # Strip EXIF tags etc.
818 filename => $cachename,
821 if (($nwidth >= 640 && $nheight >= 480) ||
822 ($nwidth >= 480 && $nheight >= 640)) {
823 $parms{'interlace'} = 'Plane';
826 $parms{'sampling-factor'} = $sf;
828 $err = $cimg->write(%parms);
833 ($xres, $yres) = ($nxres, $nyres);
835 $r->log->info("New cache: $nwidth x $nheight for $id.jpg");
840 $r->log->warn("$fname: $err");
844 error($r, "$fname: $err");
848 return ($cachename, 'image/jpeg');
851 sub get_mimetype_from_filename {
852 my $filename = shift;
853 my MIME::Type $type = $mimetypes->mimeTypeOf($filename);
854 $type = "image/jpeg" if (!defined($type));
859 my ($img, $info, $r) = @_;
861 # The infobox is of the form
862 # "Time - date - focal length, shutter time, aperture, sensitivity, exposure bias - flash",
863 # possibly with some parts omitted -- the middle part is known as the "classic
864 # fields"; note the comma separation. Every field has an associated "bold flag"
865 # in the second part.
867 my $shutter_priority = (defined($info->{'ExposureProgram'}) &&
868 $info->{'ExposureProgram'} =~ /shutter\b.*\bpriority/i);
869 my $aperture_priority = (defined($info->{'ExposureProgram'}) &&
870 $info->{'ExposureProgram'} =~ /aperture\b.*\bpriority/i);
872 my @classic_fields = ();
873 if (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)(?:\.\d+)?\s*(?:mm)?$/) {
874 push @classic_fields, [ $1 . "mm", 0 ];
875 } elsif (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)\/(\d+)$/) {
876 push @classic_fields, [ (sprintf "%.1fmm", ($1/$2)), 0 ];
879 if (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+)\/(\d+)$/) {
880 my ($a, $b) = ($1, $2);
881 my $gcd = gcd($a, $b);
882 push @classic_fields, [ $a/$gcd . "/" . $b/$gcd . "s", $shutter_priority ];
883 } elsif (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+(?:\.\d+))$/) {
884 push @classic_fields, [ $1 . "s", $shutter_priority ];
887 if (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\/(\d+)$/) {
890 push @classic_fields, [ (sprintf "f/%.0f", $f), $aperture_priority ];
892 push @classic_fields, [ (sprintf "f/%.1f", $f), $aperture_priority ];
894 } elsif (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\.(\d+)$/) {
895 my $f = $info->{'FNumber'};
897 push @classic_fields, [ (sprintf "f/%.0f", $f), $aperture_priority ];
899 push @classic_fields, [ (sprintf "f/%.1f", $f), $aperture_priority ];
903 # Apache2::ServerUtil->server->log_error(join(':', keys %$info));
906 if (defined($info->{'NikonD1-ISOSetting'})) {
907 $iso = $info->{'NikonD1-ISOSetting'};
908 } elsif (defined($info->{'ISO'})) {
909 $iso = $info->{'ISO'};
910 } elsif (defined($info->{'ISOSetting'})) {
911 $iso = $info->{'ISOSetting'};
913 if (defined($iso) && $iso =~ /(\d+)/) {
914 push @classic_fields, [ $1 . " ISO", 0 ];
917 if (defined($info->{'ExposureBiasValue'}) && $info->{'ExposureBiasValue'} ne "0") {
918 push @classic_fields, [ $info->{'ExposureBiasValue'} . " EV", 0 ];
919 } elsif (defined($info->{'ExposureCompensation'}) && $info->{'ExposureCompensation'} != 0) {
920 push @classic_fields, [ $info->{'ExposureCompensation'} . " EV", 0 ];
923 # Now piece together the rest
926 if (defined($info->{'DateTimeOriginal'}) &&
927 $info->{'DateTimeOriginal'} =~ /^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)$/
929 push @parts, [ "$1-$2-$3 $4:$5", 0 ];
932 if (defined($info->{'Model'})) {
933 my $model = $info->{'Model'};
937 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
938 push @parts, [ $model, 0 ];
942 if (scalar @classic_fields > 0) {
943 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
946 for my $field (@classic_fields) {
947 push @parts, [ ', ', 0 ] if (!$first_elem);
953 if (defined($info->{'Flash'})) {
954 if ($info->{'Flash'} =~ /did not fire/i ||
955 $info->{'Flash'} =~ /no flash/i ||
956 $info->{'Flash'} =~ /not fired/i ||
957 $info->{'Flash'} =~ /Off/) {
958 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
959 push @parts, [ "No flash", 0 ];
960 } elsif ($info->{'Flash'} =~ /fired/i ||
961 $info->{'Flash'} =~ /On/) {
962 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
963 push @parts, [ "Flash", 0 ];
965 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
966 push @parts, [ $info->{'Flash'}, 0 ];
970 return 0 if (scalar @parts == 0);
972 # Find the required width
976 for my $part (@parts) {
979 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf';
981 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf';
984 my (undef, undef, $h, undef, $w) = ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12));
987 $th = $h if ($h > $th);
990 return 0 if ($tw > $img->Get('columns'));
993 my $y = $img->Get('rows') - 24;
995 # Hit exact DCT blocks
998 my $points = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), ($img->Get('rows') - 1);
999 my $lpoints = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), $y;
1000 $img->Draw(primitive=>'rectangle', stroke=>'white', fill=>'white', points=>$points);
1001 $img->Draw(primitive=>'line', stroke=>'black', points=>$lpoints);
1003 # Start writing out the text
1004 $x = ($img->Get('columns') - $tw) / 2;
1006 my $room = ($img->Get('rows') - 1 - $y - $th);
1007 $y = ($img->Get('rows') - 1) - $room/2;
1009 for my $part (@parts) {
1012 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf';
1014 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf';
1016 $img->Annotate(text=>$part->[0], font=>$font, pointsize=>12, x=>int($x), y=>int($y));
1017 $x += ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12))[4];
1025 return $a if ($b == 0);
1026 return gcd($b, $a % $b);
1030 my ($r, $dbh, $id, $date, $desc) = @_;
1033 if (!defined($id) || $id =~ /^\s*$/ || $id !~ /^([a-zA-Z0-9-]+)$/) {
1034 push @errors, "Manglende eller ugyldig ID.";
1036 if (!defined($date) || $date =~ /^\s*$/ || $date =~ /[<>&]/ || length($date) > 100) {
1037 push @errors, "Manglende eller ugyldig dato.";
1039 if (!defined($desc) || $desc =~ /^\s*$/ || $desc =~ /[<>&]/ || length($desc) > 100) {
1040 push @errors, "Manglende eller ugyldig beskrivelse.";
1043 if (scalar @errors > 0) {
1047 my $vhost = $r->get_server_name;
1048 $dbh->do("INSERT INTO events (event,date,name,vhost) VALUES (?,?,?,?)",
1049 undef, $id, $date, $desc, $vhost)
1050 or return ("Kunne ikke sette inn ny hendelse" . $dbh->errstr);
1051 $dbh->do("INSERT INTO last_picture_cache (vhost,event,last_picture) VALUES (?,?,NULL)",
1053 or return ("Kunne ikke sette inn ny cache-rad" . $dbh->errstr);
1054 purge_cache($r, "/");
1064 $decoded = Encode::decode("utf-8", $text, Encode::FB_CROAK);
1067 $decoded = Encode::decode("iso8859-1", $text);
1073 # Depending on your front-end cache, you might want to get creative somehow here.
1074 # This example assumes you have a front-end cache and it can translate an X-Pr0n-Purge
1075 # regex tacked onto a request into something useful. The elements given in
1076 # should not be regexes, though, as e.g. Squid will not be able to handle that.
1078 my ($r, @elements) = @_;
1079 return if (scalar @elements == 0);
1082 for my $elem (@elements) {
1083 $r->log->info("Purging $elem");
1084 (my $e = $elem) =~ s/[.+*|()]/\\$&/g;
1089 if (scalar @pe == 1) {
1092 $regex .= "(" . join('|', @pe) . ")";
1094 $regex .= "(\\?.*)?\$";
1095 $r->headers_out->{'X-Pr0n-Purge'} = $regex;
1097 $r->log->info($r->headers_out->{'X-Pr0n-Purge'});
1100 # Find a list of all cache URLs for a given image, given what we have on disk.
1101 sub get_all_cache_urls {
1102 my ($r, $dbh, $id) = @_;
1103 my $dir = POSIX::floor($id / 256);
1106 my $q = $dbh->prepare('SELECT event, filename FROM images WHERE id=?')
1107 or die "Couldn't prepare: " . $dbh->errstr;
1109 or die "Couldn't find event and filename: " . $dbh->errstr;
1110 my $ref = $q->fetchrow_hashref;
1111 my $event = $ref->{'event'};
1112 my $filename = $ref->{'filename'};
1115 my $base = get_base($r) . "cache/$dir";
1116 for my $file (<$base/$id-*>) {
1117 my $fname = File::Basename::basename($file);
1118 if ($fname =~ /^$id-mipmap-.*\.jpg$/) {
1119 # Mipmaps don't have an URL, ignore
1120 } elsif ($fname =~ /^$id--1--1\.jpg$/) {
1121 push @ret, "/$event/$filename";
1122 } elsif ($fname =~ /^$id-(\d+)-(\d+)\.jpg$/) {
1123 push @ret, "/$event/$1x$2/$filename";
1124 } elsif ($fname =~ /^$id-(\d+)-(\d+)-nobox\.jpg$/) {
1125 push @ret, "/$event/$1x$2/nobox/$filename";
1126 } elsif ($fname =~ /^$id-(\d+)-(\d+)-box\.png$/) {
1127 push @ret, "/$event/$1x$2/box/$filename";
1129 $r->log->warning("Couldn't find a purging URL for $fname");