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, ?),last_update=CURRENT_TIMESTAMP 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, $mtime);
534 # Takes in an image ID and a set of resolutions, and returns (generates if needed)
535 # the smallest mipmap larger than the largest of them, as well as the original image
538 my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, @res) = @_;
539 my ($img, $mmimg, $width, $height);
541 my $physical_fname = get_disk_location($r, $id);
543 # If we don't know the size, we'll need to read it in anyway
544 if (!defined($dbwidth) || !defined($dbheight)) {
545 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
546 $width = $img->Get('columns');
547 $height = $img->Get('rows');
553 # Generate the list of mipmaps
556 my $mmwidth = $width;
557 my $mmheight = $height;
559 while ($mmwidth > 1 || $mmheight > 1) {
560 my $new_mmwidth = POSIX::floor($mmwidth / 2);
561 my $new_mmheight = POSIX::floor($mmheight / 2);
563 $new_mmwidth = 1 if ($new_mmwidth < 1);
564 $new_mmheight = 1 if ($new_mmheight < 1);
566 my $large_enough = 1;
567 for my $i (0..($#res/2)) {
568 my ($xres, $yres) = ($res[$i*2], $res[$i*2+1]);
569 if ($xres == -1 || $xres > $new_mmwidth || $yres > $new_mmheight) {
575 last if (!$large_enough);
577 $mmwidth = $new_mmwidth;
578 $mmheight = $new_mmheight;
580 push @mmlist, [ $mmwidth, $mmheight ];
583 # Ensure that all of them are OK
584 my $last_good_mmlocation;
585 for my $i (0..$#mmlist) {
586 my $last = ($i == $#mmlist);
587 my $mmres = $mmlist[$i];
589 my $mmlocation = get_mipmap_location($r, $id, $mmres->[0], $mmres->[1]);
590 if (! -r $mmlocation or (-M $mmlocation > -M $physical_fname)) {
591 if (!defined($img)) {
592 if (defined($last_good_mmlocation)) {
593 if ($can_use_qscale) {
594 $img = Sesse::pr0n::QscaleProxy->new;
596 $img = Image::Magick->new;
598 $img->Read($last_good_mmlocation);
600 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
607 $cimg = $img->Clone();
609 $r->log->info("Making mipmap for $id: " . $mmres->[0] . " x " . $mmres->[1]);
610 $cimg->Resize(width=>$mmres->[0], height=>$mmres->[1], filter=>'Lanczos', 'sampling-factor'=>'1x1');
612 my $err = $cimg->write(
613 filename => $mmlocation,
615 'sampling-factor' => '1x1'
619 $last_good_mmlocation = $mmlocation;
621 if ($last && !defined($img)) {
622 # OK, read in the smallest one
623 if ($can_use_qscale) {
624 $img = Sesse::pr0n::QscaleProxy->new;
626 $img = Image::Magick->new;
628 my $err = $img->Read($mmlocation);
632 if (!defined($img)) {
633 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale);
634 $width = $img->Get('columns');
635 $height = $img->Get('rows');
637 return ($img, $width, $height);
640 sub read_original_image {
641 my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale) = @_;
643 my $physical_fname = get_disk_location($r, $id);
645 # Read in the original image
647 if ($can_use_qscale && ($filename =~ /\.jpeg$/i || $filename =~ /\.jpg$/i)) {
648 $magick = Sesse::pr0n::QscaleProxy->new;
650 $magick = Image::Magick->new;
654 # ImageMagick can handle NEF files, but it does it by calling dcraw as a delegate.
655 # The delegate support is rather broken and causes very odd stuff to happen when
656 # more than one thread does this at the same time. Thus, we simply do it ourselves.
657 if ($filename =~ /\.(nef|cr2)$/i) {
658 # this would suffice if ImageMagick gets to fix their handling
659 # $physical_fname = "NEF:$physical_fname";
661 open DCRAW, "-|", "dcraw", "-w", "-c", $physical_fname
662 or error("dcraw: $!");
663 $err = $magick->Read(file => \*DCRAW);
666 # We always want YCbCr JPEGs. Setting this explicitly here instead of using
667 # RGB is slightly faster (no colorspace conversion needed) and works equally
668 # well for our uses, as long as we don't need to draw an information box,
669 # which trickles several ImageMagick bugs related to colorspace handling.
670 # (Ideally we'd be able to keep the image subsampled and
671 # planar, but that would probably be difficult for ImageMagick to expose.)
673 # $magick->Set(colorspace=>'YCbCr');
675 $err = $magick->Read($physical_fname);
679 $r->log->warn("$physical_fname: $err");
683 error($r, "$physical_fname: $err");
687 # If we use ->[0] unconditionally, text rendering (!) seems to crash
689 if (ref($magick) !~ /Image::Magick/) {
692 $img = (scalar @$magick > 1) ? $magick->[0] : $magick;
699 my ($r, $filename, $id, $dbwidth, $dbheight, $infobox, $xres, $yres, @otherres) = @_;
701 my ($new_dbwidth, $new_dbheight);
703 my $fname = get_disk_location($r, $id);
704 if ($infobox ne 'box') {
705 unless (defined($xres) && (!defined($dbwidth) || !defined($dbheight) || $xres < $dbwidth || $yres < $dbheight || $xres == -1)) {
706 return ($fname, undef);
710 my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
712 if (! -r $cachename or (-M $cachename > -M $fname)) {
713 # If we are in overload mode (aka Slashdot mode), refuse to generate
715 if (Sesse::pr0n::Overload::is_in_overload($r)) {
716 $r->log->warn("In overload mode, not scaling $id to $xres x $yres");
717 error($r, 'System is in overload mode, not doing any scaling');
720 # If we're being asked for just the box, make a new image with just the box.
721 # We don't care about @otherres since each of these images are
722 # already pretty cheap to generate, but we need the exact width so we can make
723 # one in the right size.
724 if ($infobox eq 'box') {
725 my ($img, $width, $height);
727 # This is slow, but should fortunately almost never happen, so don't bother
729 if (!defined($dbwidth) || !defined($dbheight)) {
730 $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, 0);
731 $new_dbwidth = $width = $img->Get('columns');
732 $new_dbheight = $height = $img->Get('rows');
735 $img = Image::Magick->new;
740 if (defined($xres) && defined($yres)) {
741 ($width, $height) = scale_aspect($width, $height, $xres, $yres);
744 $img->Set(size=>($width . "x" . $height));
745 $img->Read('xc:white');
747 my $info = Image::ExifTool::ImageInfo($fname);
748 if (make_infobox($img, $info, $r)) {
749 $img->Quantize(colors=>16, dither=>'False');
751 # Since the image is grayscale, ImageMagick overrides us and writes this
752 # as grayscale anyway, but at least we get rid of the alpha channel this
754 $img->Set(type=>'Palette');
756 # Not enough room for the text, make a tiny dummy transparent infobox
758 $img->Set(size=>"1x1");
765 $err = $img->write(filename => $cachename, quality => 90, depth => 8);
766 $r->log->info("New infobox cache: $width x $height for $id.jpg");
768 return ($cachename, 'image/png');
771 my $can_use_qscale = 0;
772 if ($infobox eq 'nobox') {
777 ($img, $new_dbwidth, $new_dbheight) = make_mipmap($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, $xres, $yres, @otherres);
779 while (defined($xres) && defined($yres)) {
780 my ($nxres, $nyres) = (shift @otherres, shift @otherres);
781 my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox);
784 if (defined($nxres) && defined($nyres)) {
785 # we have more resolutions to scale, so don't throw
787 $cimg = $img->Clone();
792 my $width = $img->Get('columns');
793 my $height = $img->Get('rows');
794 my ($nwidth, $nheight) = scale_aspect($width, $height, $xres, $yres);
796 my $filter = 'Lanczos';
801 $cimg->Resize(width=>$nwidth, height=>$nheight, filter=>$filter, 'sampling-factor'=>$sf);
804 if (($nwidth >= 800 || $nheight >= 600 || $xres == -1) && $infobox ne 'nobox') {
805 my $info = Image::ExifTool::ImageInfo($fname);
806 make_infobox($cimg, $info, $r);
809 # Strip EXIF tags etc.
814 filename => $cachename,
817 if (($nwidth >= 640 && $nheight >= 480) ||
818 ($nwidth >= 480 && $nheight >= 640)) {
819 $parms{'interlace'} = 'Plane';
822 $parms{'sampling-factor'} = $sf;
824 $err = $cimg->write(%parms);
829 ($xres, $yres) = ($nxres, $nyres);
831 $r->log->info("New cache: $nwidth x $nheight for $id.jpg");
836 $r->log->warn("$fname: $err");
840 error($r, "$fname: $err");
845 # Update the SQL database if it doesn't contain the required info
846 if (!defined($dbwidth) && defined($new_dbwidth)) {
847 $r->log->info("Updating width/height for $id: $new_dbwidth x $new_dbheight");
848 update_image_info($r, $id, $new_dbwidth, $new_dbheight);
851 return ($cachename, 'image/jpeg');
854 sub get_mimetype_from_filename {
855 my $filename = shift;
856 my MIME::Type $type = $mimetypes->mimeTypeOf($filename);
857 $type = "image/jpeg" if (!defined($type));
862 my ($img, $info, $r) = @_;
864 # The infobox is of the form
865 # "Time - date - focal length, shutter time, aperture, sensitivity, exposure bias - flash",
866 # possibly with some parts omitted -- the middle part is known as the "classic
867 # fields"; note the comma separation. Every field has an associated "bold flag"
868 # in the second part.
870 my $manual_shutter = (defined($info->{'ExposureProgram'}) &&
871 $info->{'ExposureProgram'} =~ /shutter\b.*\bpriority/i);
872 my $manual_aperture = (defined($info->{'ExposureProgram'}) &&
873 $info->{'ExposureProgram'} =~ /aperture\b.*\bpriority/i);
874 if ($info->{'ExposureProgram'} =~ /manual/i) {
876 $manual_aperture = 1;
879 my @classic_fields = ();
880 if (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)(?:\.\d+)?\s*(?:mm)?$/) {
881 push @classic_fields, [ $1 . "mm", 0 ];
882 } elsif (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)\/(\d+)$/) {
883 push @classic_fields, [ (sprintf "%.1fmm", ($1/$2)), 0 ];
886 if (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+)\/(\d+)$/) {
887 my ($a, $b) = ($1, $2);
888 my $gcd = gcd($a, $b);
889 push @classic_fields, [ $a/$gcd . "/" . $b/$gcd . "s", $manual_shutter ];
890 } elsif (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+(?:\.\d+)?)$/) {
891 push @classic_fields, [ $1 . "s", $manual_shutter ];
894 if (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\/(\d+)$/) {
897 push @classic_fields, [ (sprintf "f/%.0f", $f), $manual_aperture ];
899 push @classic_fields, [ (sprintf "f/%.1f", $f), $manual_aperture ];
901 } elsif (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\.(\d+)$/) {
902 my $f = $info->{'FNumber'};
904 push @classic_fields, [ (sprintf "f/%.0f", $f), $manual_aperture ];
906 push @classic_fields, [ (sprintf "f/%.1f", $f), $manual_aperture ];
910 # Apache2::ServerUtil->server->log_error(join(':', keys %$info));
913 if (defined($info->{'NikonD1-ISOSetting'})) {
914 $iso = $info->{'NikonD1-ISOSetting'};
915 } elsif (defined($info->{'ISO'})) {
916 $iso = $info->{'ISO'};
917 } elsif (defined($info->{'ISOSetting'})) {
918 $iso = $info->{'ISOSetting'};
920 if (defined($iso) && $iso =~ /(\d+)/) {
921 push @classic_fields, [ $1 . " ISO", 0 ];
924 if (defined($info->{'ExposureBiasValue'}) && $info->{'ExposureBiasValue'} ne "0") {
925 push @classic_fields, [ $info->{'ExposureBiasValue'} . " EV", 0 ];
926 } elsif (defined($info->{'ExposureCompensation'}) && $info->{'ExposureCompensation'} ne "0") {
927 push @classic_fields, [ $info->{'ExposureCompensation'} . " EV", 0 ];
930 # Now piece together the rest
933 if (defined($info->{'DateTimeOriginal'}) &&
934 $info->{'DateTimeOriginal'} =~ /^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)$/
936 push @parts, [ "$1-$2-$3 $4:$5", 0 ];
939 if (defined($info->{'Model'})) {
940 my $model = $info->{'Model'};
944 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
945 push @parts, [ $model, 0 ];
949 if (scalar @classic_fields > 0) {
950 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
953 for my $field (@classic_fields) {
954 push @parts, [ ', ', 0 ] if (!$first_elem);
960 if (defined($info->{'Flash'})) {
961 if ($info->{'Flash'} =~ /did not fire/i ||
962 $info->{'Flash'} =~ /no flash/i ||
963 $info->{'Flash'} =~ /not fired/i ||
964 $info->{'Flash'} =~ /Off/) {
965 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
966 push @parts, [ "No flash", 0 ];
967 } elsif ($info->{'Flash'} =~ /fired/i ||
968 $info->{'Flash'} =~ /On/) {
969 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
970 push @parts, [ "Flash", 0 ];
972 push @parts, [ ' - ', 0 ] if (scalar @parts > 0);
973 push @parts, [ $info->{'Flash'}, 0 ];
977 return 0 if (scalar @parts == 0);
979 # Find the required width
983 for my $part (@parts) {
986 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf';
988 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf';
991 my (undef, undef, $h, undef, $w) = ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12));
994 $th = $h if ($h > $th);
997 return 0 if ($tw > $img->Get('columns'));
1000 my $y = $img->Get('rows') - 24;
1002 # Hit exact DCT blocks
1005 my $points = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), ($img->Get('rows') - 1);
1006 my $lpoints = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), $y;
1007 $img->Draw(primitive=>'rectangle', stroke=>'white', fill=>'white', points=>$points);
1008 $img->Draw(primitive=>'line', stroke=>'black', points=>$lpoints);
1010 # Start writing out the text
1011 $x = ($img->Get('columns') - $tw) / 2;
1013 my $room = ($img->Get('rows') - 1 - $y - $th);
1014 $y = ($img->Get('rows') - 1) - $room/2;
1016 for my $part (@parts) {
1019 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf';
1021 $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf';
1023 $img->Annotate(text=>$part->[0], font=>$font, pointsize=>12, x=>int($x), y=>int($y));
1024 $x += ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12))[4];
1032 return $a if ($b == 0);
1033 return gcd($b, $a % $b);
1037 my ($r, $dbh, $id, $date, $desc) = @_;
1040 if (!defined($id) || $id =~ /^\s*$/ || $id !~ /^([a-zA-Z0-9-]+)$/) {
1041 push @errors, "Manglende eller ugyldig ID.";
1043 if (!defined($date) || $date =~ /^\s*$/ || $date =~ /[<>&]/ || length($date) > 100) {
1044 push @errors, "Manglende eller ugyldig dato.";
1046 if (!defined($desc) || $desc =~ /^\s*$/ || $desc =~ /[<>&]/ || length($desc) > 100) {
1047 push @errors, "Manglende eller ugyldig beskrivelse.";
1050 if (scalar @errors > 0) {
1054 my $vhost = $r->get_server_name;
1055 $dbh->do("INSERT INTO events (event,date,name,vhost) VALUES (?,?,?,?)",
1056 undef, $id, $date, $desc, $vhost)
1057 or return ("Kunne ikke sette inn ny hendelse" . $dbh->errstr);
1058 $dbh->do("INSERT INTO last_picture_cache (vhost,event,last_picture) VALUES (?,?,NULL)",
1060 or return ("Kunne ikke sette inn ny cache-rad" . $dbh->errstr);
1061 purge_cache($r, "/");
1071 $decoded = Encode::decode("utf-8", $text, Encode::FB_CROAK);
1074 $decoded = Encode::decode("iso8859-1", $text);
1080 # Depending on your front-end cache, you might want to get creative somehow here.
1081 # This example assumes you have a front-end cache and it can translate an X-Pr0n-Purge
1082 # regex tacked onto a request into something useful. The elements given in
1083 # should not be regexes, though, as e.g. Squid will not be able to handle that.
1085 my ($r, @elements) = @_;
1086 return if (scalar @elements == 0);
1089 for my $elem (@elements) {
1090 $r->log->info("Purging $elem");
1091 (my $e = $elem) =~ s/[.+*|()]/\\$&/g;
1096 if (scalar @pe == 1) {
1099 $regex .= "(" . join('|', @pe) . ")";
1101 $regex .= "(\\?.*)?\$";
1102 $r->headers_out->{'X-Pr0n-Purge'} = $regex;
1104 $r->log->info($r->headers_out->{'X-Pr0n-Purge'});
1107 # Find a list of all cache URLs for a given image, given what we have on disk.
1108 sub get_all_cache_urls {
1109 my ($r, $dbh, $id) = @_;
1110 my $dir = POSIX::floor($id / 256);
1113 my $q = $dbh->prepare('SELECT event, filename FROM images WHERE id=?')
1114 or die "Couldn't prepare: " . $dbh->errstr;
1116 or die "Couldn't find event and filename: " . $dbh->errstr;
1117 my $ref = $q->fetchrow_hashref;
1118 my $event = $ref->{'event'};
1119 my $filename = $ref->{'filename'};
1122 my $base = get_base($r) . "cache/$dir";
1123 for my $file (<$base/$id-*>) {
1124 my $fname = File::Basename::basename($file);
1125 if ($fname =~ /^$id-mipmap-.*\.jpg$/) {
1126 # Mipmaps don't have an URL, ignore
1127 } elsif ($fname =~ /^$id--1--1\.jpg$/) {
1128 push @ret, "/$event/$filename";
1129 } elsif ($fname =~ /^$id-(\d+)-(\d+)\.jpg$/) {
1130 push @ret, "/$event/$1x$2/$filename";
1131 } elsif ($fname =~ /^$id-(\d+)-(\d+)-nobox\.jpg$/) {
1132 push @ret, "/$event/$1x$2/nobox/$filename";
1133 } elsif ($fname =~ /^$id--1--1-box\.png$/) {
1134 push @ret, "/$event/box/$filename";
1135 } elsif ($fname =~ /^$id-(\d+)-(\d+)-box\.png$/) {
1136 push @ret, "/$event/$1x$2/box/$filename";
1138 $r->log->warn("Couldn't find a purging URL for $fname");