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 if ($auth =~ /^Basic ([a-zA-Z0-9+\/]+=*)$/) {
326 return check_basic_auth($r, $1);
328 if ($auth =~ /^Digest (.*)$/) {
329 return check_digest_auth($r, $1);
336 my ($r, %options) = @_;
337 $r->content_type('text/plain; charset=utf-8');
339 $r->headers_out->{'www-authenticate'} = 'Basic realm="pr0n.sesse.net"';
341 # Digest auth is disabled for now, due to various client problems.
342 if (0 && ($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);
373 my $ref = $dbh->selectrow_hashref('SELECT sha1password,digest_ha1_hex FROM users WHERE username=? AND vhost=?',
374 undef, $user, $r->get_server_name);
375 if (!defined($ref) || $ref->{'sha1password'} ne Digest::SHA1::sha1_base64($pass)) {
376 $r->content_type('text/plain; charset=utf-8');
377 $r->log->warn("Authentication failed for $user/$takenby");
381 $r->log->info("Authentication succeeded for $user/$takenby");
383 # Make sure we can use Digest authentication in the future with this password.
384 my $ha1 = Digest::MD5::md5_hex($user . ':pr0n.sesse.net:' . $pass);
385 if (!defined($ref->{'digest_ha1_hex'}) || $ref->{'digest_ha1_hex'} ne $ha1) {
386 $dbh->do('UPDATE users SET digest_ha1_hex=? WHERE username=? AND vhost=?',
387 undef, $ha1, $user, $r->get_server_name)
388 or die "Couldn't update: " . $dbh->errstr;
389 $r->log->info("Updated Digest auth hash for for $user");
392 return ($user, $takenby);
395 sub check_digest_auth {
398 # We're a bit more liberal than RFC2069 in the parsing here, allowing
399 # quoted strings everywhere.
401 while ($auth =~ s/^ ([a-zA-Z]+) # key
404 [^",]* # either something that doesn't contain comma or quotes
406 " ( [^"\\] | \\ . ) * " # or a full quoted string
408 (?: (?: , \s* ) + | $ ) # delimiter(s), or end of string
410 my ($key, $value) = ($1, $2);
411 if ($value =~ /^"(.*)"$/) {
413 $value =~ s/\\(.)/$1/g;
415 $auth{$key} = $value;
417 unless (exists($auth{'username'}) &&
418 exists($auth{'uri'}) &&
419 exists($auth{'nonce'}) &&
420 exists($auth{'opaque'}) &&
421 exists($auth{'response'})) {
425 if ($r->uri ne $auth{'uri'}) {
430 # Verify that the opaque data does indeed look like a timestamp, and that the nonce
431 # is indeed a signed version of it.
432 if ($auth{'opaque'} !~ /^\d+$/) {
436 my $compare_nonce = Digest::HMAC_SHA1->hmac_sha1_hex($auth{'opaque'}, $Sesse::pr0n::Config::db_password);
437 if ($auth{'nonce'} ne $compare_nonce) {
442 # Now look up the user's HA1 from the database, and calculate HA2.
443 my ($user, $takenby) = extract_takenby($auth{'username'});
444 my $ref = $dbh->selectrow_hashref('SELECT digest_ha1_hex FROM users WHERE username=? AND vhost=?',
445 undef, $user, $r->get_server_name);
446 if (!defined($ref)) {
450 if (!defined($ref->{'digest_ha1_hex'}) || $ref->{'digest_ha1_hex'} !~ /^[0-9a-f]{32}$/) {
451 # A user that exists but has empty HA1 is a user that's not
452 # ready for digest auth, so we hack it and resend 401,
453 # only this time without digest auth.
454 output_401($r, DigestAuth => 0);
457 my $ha1 = $ref->{'digest_ha1_hex'};
458 my $ha2 = Digest::MD5::md5_hex($r->method . ':' . $auth{'uri'});
460 if (exists($auth{'qop'}) && $auth{'qop'} eq 'auth') {
461 unless (exists($auth{'nc'}) && exists($auth{'cnonce'})) {
467 $response .= ':' . $auth{'nonce'};
468 $response .= ':' . $auth{'nc'};
469 $response .= ':' . $auth{'cnonce'};
470 $response .= ':' . $auth{'qop'};
471 $response .= ':' . $ha2;
474 $response .= ':' . $auth{'nonce'};
475 $response .= ':' . $ha2;
477 if ($auth{'response'} ne Digest::MD5::md5_hex($response)) {
482 # OK, everything is good, and there's only one thing we need to check: That the nonce
483 # isn't too old. If it is, but everything else is ok, we tell the browser that and it
484 # will re-encrypt with the new nonce.
485 my $timediff = time - $auth{'opaque'};
486 if ($timediff < 0 || $timediff > 300) {
487 output_401($r, StaleNonce => 1);
491 return ($user, $takenby);
494 sub extract_takenby {
497 # WinXP is stupid :-)
498 if ($user =~ /^.*\\(.*)$/) {
503 if ($user =~ /^([a-zA-Z0-9^_-]+)\@([a-zA-Z0-9^_-]+)$/) {
507 ($takenby = $user) =~ s/^([a-zA-Z])/uc($1)/e;
510 return ($user, $takenby);
514 my ($r, $event, $filename) = (@_);
515 my $ref = $dbh->selectrow_hashref(
516 'SELECT id FROM images WHERE event=? AND filename=?',
517 undef, $event, $filename);
518 if (!defined($ref)) {
519 return (undef, undef, undef);
521 return stat_image_from_id($r, $ref->{'id'});
524 sub stat_image_from_id {
527 my $fname = get_disk_location($r, $id);
528 my (undef, undef, undef, undef, undef, undef, undef, $size, undef, $mtime) = stat($fname)
529 or return (undef, undef, undef);
531 return ($fname, $size, $mtime);
534 # Takes in an image ID and a set of resolutions, and returns (generates if needed)
535 # the smallest mipmap larger than the largest of them.
537 my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, @res) = @_;
538 my ($img, $mmimg, $width, $height);
540 my $physical_fname = get_disk_location($r, $id);
542 # If we don't know the size, we'll need to read it in anyway
543 if (!defined($dbwidth) || !defined($dbheight)) {
544 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
545 $width = $img->Get('columns');
546 $height = $img->Get('rows');
552 # Generate the list of mipmaps
555 my $mmwidth = $width;
556 my $mmheight = $height;
558 while ($mmwidth > 1 || $mmheight > 1) {
559 my $new_mmwidth = POSIX::floor($mmwidth / 2);
560 my $new_mmheight = POSIX::floor($mmheight / 2);
562 $new_mmwidth = 1 if ($new_mmwidth < 1);
563 $new_mmheight = 1 if ($new_mmheight < 1);
565 my $large_enough = 1;
566 for my $i (0..($#res/2)) {
567 my ($xres, $yres) = ($res[$i*2], $res[$i*2+1]);
568 if ($xres == -1 || $xres > $new_mmwidth || $yres > $new_mmheight) {
574 last if (!$large_enough);
576 $mmwidth = $new_mmwidth;
577 $mmheight = $new_mmheight;
579 push @mmlist, [ $mmwidth, $mmheight ];
582 # Ensure that all of them are OK
583 my $last_good_mmlocation;
584 for my $i (0..$#mmlist) {
585 my $last = ($i == $#mmlist);
586 my $mmres = $mmlist[$i];
588 my $mmlocation = get_mipmap_location($r, $id, $mmres->[0], $mmres->[1]);
589 if (! -r $mmlocation or (-M $mmlocation > -M $physical_fname)) {
590 if (!defined($img)) {
591 if (defined($last_good_mmlocation)) {
592 if ($can_use_qscale) {
593 $img = Sesse::pr0n::QscaleProxy->new;
595 $img = Image::Magick->new;
597 $img->Read($last_good_mmlocation);
599 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
606 $cimg = $img->Clone();
608 $r->log->info("Making mipmap for $id: " . $mmres->[0] . " x " . $mmres->[1]);
609 $cimg->Resize(width=>$mmres->[0], height=>$mmres->[1], filter=>'Lanczos', 'sampling-factor'=>'1x1');
611 my $err = $cimg->write(
612 filename => $mmlocation,
614 'sampling-factor' => '1x1'
618 $last_good_mmlocation = $mmlocation;
620 if ($last && !defined($img)) {
621 # OK, read in the smallest one
622 if ($can_use_qscale) {
623 $img = Sesse::pr0n::QscaleProxy->new;
625 $img = Image::Magick->new;
627 my $err = $img->Read($mmlocation);
631 if (!defined($img)) {
632 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
637 sub read_original_image {
638 my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale) = @_;
640 my $physical_fname = get_disk_location($r, $id);
642 # Read in the original image
644 if ($can_use_qscale && ($filename =~ /\.jpeg$/i || $filename =~ /\.jpg$/i)) {
645 $magick = Sesse::pr0n::QscaleProxy->new;
647 $magick = Image::Magick->new;
651 # ImageMagick can handle NEF files, but it does it by calling dcraw as a delegate.
652 # The delegate support is rather broken and causes very odd stuff to happen when
653 # more than one thread does this at the same time. Thus, we simply do it ourselves.
654 if ($filename =~ /\.(nef|cr2)$/i) {
655 # this would suffice if ImageMagick gets to fix their handling
656 # $physical_fname = "NEF:$physical_fname";
658 open DCRAW, "-|", "dcraw", "-w", "-c", $physical_fname
659 or error("dcraw: $!");
660 $err = $magick->Read(file => \*DCRAW);
663 # We always want YCbCr JPEGs. Setting this explicitly here instead of using
664 # RGB is slightly faster (no colorspace conversion needed) and works equally
665 # well for our uses, as long as we don't need to draw an information box,
666 # which trickles several ImageMagick bugs related to colorspace handling.
667 # (Ideally we'd be able to keep the image subsampled and
668 # planar, but that would probably be difficult for ImageMagick to expose.)
670 # $magick->Set(colorspace=>'YCbCr');
672 $err = $magick->Read($physical_fname);
676 $r->log->warn("$physical_fname: $err");
680 error($r, "$physical_fname: $err");
684 # If we use ->[0] unconditionally, text rendering (!) seems to crash
686 if (ref($magick) !~ /Image::Magick/) {
689 $img = (scalar @$magick > 1) ? $magick->[0] : $magick;
692 my $width = $img->Get('columns');
693 my $height = $img->Get('rows');
695 # Update the SQL database if it doesn't contain the required info
696 if (!defined($dbwidth) || !defined($dbheight)) {
697 $r->log->info("Updating width/height for $id: $width x $height");
698 update_image_info($r, $id, $width, $height);
705 my ($r, $filename, $id, $dbwidth, $dbheight, $infobox, $xres, $yres, @otherres) = @_;
707 my $fname = get_disk_location($r, $id);
708 if ($infobox ne 'box') {
709 unless (defined($xres) && (!defined($dbwidth) || !defined($dbheight) || $xres < $dbwidth || $yres < $dbheight || $xres == -1)) {
710 return ($fname, undef);
714 my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
716 if (! -r $cachename or (-M $cachename > -M $fname)) {
717 # If we are in overload mode (aka Slashdot mode), refuse to generate
719 if (Sesse::pr0n::Overload::is_in_overload($r)) {
720 $r->log->warn("In overload mode, not scaling $id to $xres x $yres");
721 error($r, 'System is in overload mode, not doing any scaling');
724 # If we're being asked for just the box, make a new image with just the box.
725 # We don't care about @otherres since each of these images are
726 # already pretty cheap to generate, but we need the exact width so we can make
727 # one in the right size.
728 if ($infobox eq 'box') {
729 my ($img, $width, $height);
731 # This is slow, but should fortunately almost never happen, so don't bother
733 if (!defined($dbwidth) || !defined($dbheight)) {
734 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, 0);
735 $width = $img->Get('columns');
736 $height = $img->Get('rows');
739 $img = Image::Magick->new;
744 if (defined($xres) && defined($yres)) {
745 ($width, $height) = scale_aspect($width, $height, $xres, $yres);
748 $img->Set(size=>($width . "x" . $height));
749 $img->Read('xc:white');
751 my $info = Image::ExifTool::ImageInfo($fname);
752 if (make_infobox($img, $info, $r)) {
753 $img->Quantize(colors=>16, dither=>'False');
755 # Since the image is grayscale, ImageMagick overrides us and writes this
756 # as grayscale anyway, but at least we get rid of the alpha channel this
758 $img->Set(type=>'Palette');
760 # Not enough room for the text, make a tiny dummy transparent infobox
762 $img->Set(size=>"1x1");
769 $err = $img->write(filename => $cachename, quality => 90, depth => 8);
770 $r->log->info("New infobox cache: $width x $height for $id.jpg");
772 return ($cachename, 'image/png');
775 my $can_use_qscale = 0;
776 if ($infobox eq 'nobox') {
780 my $img = make_mipmap($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, $xres, $yres, @otherres);
782 while (defined($xres) && defined($yres)) {
783 my ($nxres, $nyres) = (shift @otherres, shift @otherres);
784 my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
787 if (defined($nxres) && defined($nyres)) {
788 # we have more resolutions to scale, so don't throw
790 $cimg = $img->Clone();
795 my $width = $img->Get('columns');
796 my $height = $img->Get('rows');
797 my ($nwidth, $nheight) = scale_aspect($width, $height, $xres, $yres);
799 my $filter = 'Lanczos';
804 $cimg->Resize(width=>$nwidth, height=>$nheight, filter=>$filter, 'sampling-factor'=>$sf);
807 if (($nwidth >= 800 || $nheight >= 600 || $xres == -1) && $infobox ne 'nobox') {
808 my $info = Image::ExifTool::ImageInfo($fname);
809 make_infobox($cimg, $info, $r);
812 # Strip EXIF tags etc.
817 filename => $cachename,
820 if (($nwidth >= 640 && $nheight >= 480) ||
821 ($nwidth >= 480 && $nheight >= 640)) {
822 $parms{'interlace'} = 'Plane';
825 $parms{'sampling-factor'} = $sf;
827 $err = $cimg->write(%parms);
832 ($xres, $yres) = ($nxres, $nyres);
834 $r->log->info("New cache: $nwidth x $nheight for $id.jpg");
839 $r->log->warn("$fname: $err");
843 error($r, "$fname: $err");
847 return ($cachename, 'image/jpeg');
850 sub get_mimetype_from_filename {
851 my $filename = shift;
852 my MIME::Type $type = $mimetypes->mimeTypeOf($filename);
853 $type = "image/jpeg" if (!defined($type));
858 my ($img, $info, $r) = @_;
860 # The infobox is of the form
861 # "Time - date - focal length, shutter time, aperture, sensitivity, exposure bias - flash",
862 # possibly with some parts omitted -- the middle part is known as the "classic
863 # fields"; note the comma separation. Every field has an associated "bold flag"
864 # in the second part.
866 my $shutter_priority = (defined($info->{'ExposureProgram'}) &&
867 $info->{'ExposureProgram'} =~ /shutter\b.*\bpriority/i);
868 my $aperture_priority = (defined($info->{'ExposureProgram'}) &&
869 $info->{'ExposureProgram'} =~ /aperture\b.*\bpriority/i);
871 my @classic_fields = ();
872 if (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)(?:\.\d+)?\s*(?:mm)?$/) {
873 push @classic_fields, [ $1 . "mm", 0 ];
874 } elsif (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)\/(\d+)$/) {
875 push @classic_fields, [ (sprintf "%.1fmm", ($1/$2)), 0 ];
878 if (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+)\/(\d+)$/) {
879 my ($a, $b) = ($1, $2);
880 my $gcd = gcd($a, $b);
881 push @classic_fields, [ $a/$gcd . "/" . $b/$gcd . "s", $shutter_priority ];
882 } elsif (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+(?:\.\d+)?)$/) {
883 push @classic_fields, [ $1 . "s", $shutter_priority ];
886 if (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\/(\d+)$/) {
889 push @classic_fields, [ (sprintf "f/%.0f", $f), $aperture_priority ];
891 push @classic_fields, [ (sprintf "f/%.1f", $f), $aperture_priority ];
893 } elsif (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\.(\d+)$/) {
894 my $f = $info->{'FNumber'};
896 push @classic_fields, [ (sprintf "f/%.0f", $f), $aperture_priority ];
898 push @classic_fields, [ (sprintf "f/%.1f", $f), $aperture_priority ];
902 # Apache2::ServerUtil->server->log_error(join(':', keys %$info));
905 if (defined($info->{'NikonD1-ISOSetting'})) {
906 $iso = $info->{'NikonD1-ISOSetting'};
907 } elsif (defined($info->{'ISO'})) {
908 $iso = $info->{'ISO'};
909 } elsif (defined($info->{'ISOSetting'})) {
910 $iso = $info->{'ISOSetting'};
912 if (defined($iso) && $iso =~ /(\d+)/) {
913 push @classic_fields, [ $1 . " ISO", 0 ];
916 if (defined($info->{'ExposureBiasValue'}) && $info->{'ExposureBiasValue'} ne "0") {
917 push @classic_fields, [ $info->{'ExposureBiasValue'} . " EV", 0 ];
918 } elsif (defined($info->{'ExposureCompensation'}) && $info->{'ExposureCompensation'} ne "0") {
919 push @classic_fields, [ $info->{'ExposureCompensation'} . " EV", 0 ];
922 # Now piece together the rest
925 if (defined($info->{'DateTimeOriginal'}) &&
926 $info->{'DateTimeOriginal'} =~ /^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)$/
928 push @parts, [ "$1-$2-$3 $4:$5", 0 ];
931 if (defined($info->{'Model'})) {
932 my $model = $info->{'Model'};
936 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
937 push @parts, [ $model, 0 ];
941 if (scalar @classic_fields > 0) {
942 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
945 for my $field (@classic_fields) {
946 push @parts, [ ', ', 0 ] if (!$first_elem);
952 if (defined($info->{'Flash'})) {
953 if ($info->{'Flash'} =~ /did not fire/i ||
954 $info->{'Flash'} =~ /no flash/i ||
955 $info->{'Flash'} =~ /not fired/i ||
956 $info->{'Flash'} =~ /Off/) {
957 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
958 push @parts, [ "No flash", 0 ];
959 } elsif ($info->{'Flash'} =~ /fired/i ||
960 $info->{'Flash'} =~ /On/) {
961 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
962 push @parts, [ "Flash", 0 ];
964 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
965 push @parts, [ $info->{'Flash'}, 0 ];
969 return 0 if (scalar @parts == 0);
971 # Find the required width
975 for my $part (@parts) {
978 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf';
980 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf';
983 my (undef, undef, $h, undef, $w) = ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12));
986 $th = $h if ($h > $th);
989 return 0 if ($tw > $img->Get('columns'));
992 my $y = $img->Get('rows') - 24;
994 # Hit exact DCT blocks
997 my $points = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), ($img->Get('rows') - 1);
998 my $lpoints = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), $y;
999 $img->Draw(primitive=>'rectangle', stroke=>'white', fill=>'white', points=>$points);
1000 $img->Draw(primitive=>'line', stroke=>'black', points=>$lpoints);
1002 # Start writing out the text
1003 $x = ($img->Get('columns') - $tw) / 2;
1005 my $room = ($img->Get('rows') - 1 - $y - $th);
1006 $y = ($img->Get('rows') - 1) - $room/2;
1008 for my $part (@parts) {
1011 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf';
1013 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf';
1015 $img->Annotate(text=>$part->[0], font=>$font, pointsize=>12, x=>int($x), y=>int($y));
1016 $x += ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12))[4];
1024 return $a if ($b == 0);
1025 return gcd($b, $a % $b);
1029 my ($r, $dbh, $id, $date, $desc) = @_;
1032 if (!defined($id) || $id =~ /^\s*$/ || $id !~ /^([a-zA-Z0-9-]+)$/) {
1033 push @errors, "Manglende eller ugyldig ID.";
1035 if (!defined($date) || $date =~ /^\s*$/ || $date =~ /[<>&]/ || length($date) > 100) {
1036 push @errors, "Manglende eller ugyldig dato.";
1038 if (!defined($desc) || $desc =~ /^\s*$/ || $desc =~ /[<>&]/ || length($desc) > 100) {
1039 push @errors, "Manglende eller ugyldig beskrivelse.";
1042 if (scalar @errors > 0) {
1046 my $vhost = $r->get_server_name;
1047 $dbh->do("INSERT INTO events (event,date,name,vhost) VALUES (?,?,?,?)",
1048 undef, $id, $date, $desc, $vhost)
1049 or return ("Kunne ikke sette inn ny hendelse" . $dbh->errstr);
1050 $dbh->do("INSERT INTO last_picture_cache (vhost,event,last_picture) VALUES (?,?,NULL)",
1052 or return ("Kunne ikke sette inn ny cache-rad" . $dbh->errstr);
1053 purge_cache($r, "/");
1063 $decoded = Encode::decode("utf-8", $text, Encode::FB_CROAK);
1066 $decoded = Encode::decode("iso8859-1", $text);
1072 # Depending on your front-end cache, you might want to get creative somehow here.
1073 # This example assumes you have a front-end cache and it can translate an X-Pr0n-Purge
1074 # regex tacked onto a request into something useful. The elements given in
1075 # should not be regexes, though, as e.g. Squid will not be able to handle that.
1077 my ($r, @elements) = @_;
1078 return if (scalar @elements == 0);
1081 for my $elem (@elements) {
1082 $r->log->info("Purging $elem");
1083 (my $e = $elem) =~ s/[.+*|()]/\\$&/g;
1088 if (scalar @pe == 1) {
1091 $regex .= "(" . join('|', @pe) . ")";
1093 $regex .= "(\\?.*)?\$";
1094 $r->headers_out->{'X-Pr0n-Purge'} = $regex;
1096 $r->log->info($r->headers_out->{'X-Pr0n-Purge'});
1099 # Find a list of all cache URLs for a given image, given what we have on disk.
1100 sub get_all_cache_urls {
1101 my ($r, $dbh, $id) = @_;
1102 my $dir = POSIX::floor($id / 256);
1105 my $q = $dbh->prepare('SELECT event, filename FROM images WHERE id=?')
1106 or die "Couldn't prepare: " . $dbh->errstr;
1108 or die "Couldn't find event and filename: " . $dbh->errstr;
1109 my $ref = $q->fetchrow_hashref;
1110 my $event = $ref->{'event'};
1111 my $filename = $ref->{'filename'};
1114 my $base = get_base($r) . "cache/$dir";
1115 for my $file (<$base/$id-*>) {
1116 my $fname = File::Basename::basename($file);
1117 if ($fname =~ /^$id-mipmap-.*\.jpg$/) {
1118 # Mipmaps don't have an URL, ignore
1119 } elsif ($fname =~ /^$id--1--1\.jpg$/) {
1120 push @ret, "/$event/$filename";
1121 } elsif ($fname =~ /^$id-(\d+)-(\d+)\.jpg$/) {
1122 push @ret, "/$event/$1x$2/$filename";
1123 } elsif ($fname =~ /^$id-(\d+)-(\d+)-nobox\.jpg$/) {
1124 push @ret, "/$event/$1x$2/nobox/$filename";
1125 } elsif ($fname =~ /^$id--1--1-box\.png$/) {
1126 push @ret, "/$event/box/$filename";
1127 } elsif ($fname =~ /^$id-(\d+)-(\d+)-box\.png$/) {
1128 push @ret, "/$event/$1x$2/box/$filename";
1130 $r->log->warn("Couldn't find a purging URL for $fname");