package Sesse::pr0n::Common; use strict; use warnings; use Sesse::pr0n::Overload; use Sesse::pr0n::QscaleProxy; use Sesse::pr0n::Templates; use Apache2::RequestRec (); # for $r->content_type use Apache2::RequestIO (); # for $r->print use Apache2::Const -compile => ':common'; use Apache2::Log; use ModPerl::Util; use Carp; use Encode; use DBI; use DBD::Pg; use Image::Magick; use POSIX; use Digest::MD5; use Digest::SHA1; use Digest::HMAC_SHA1; use MIME::Base64; use MIME::Types; use LWP::Simple; # use Image::Info; use Image::ExifTool; use HTML::Entities; use URI::Escape; use File::Basename; BEGIN { use Exporter (); our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS); use Sesse::pr0n::Config; eval { require Sesse::pr0n::Config_local; }; $VERSION = "v2.71"; @ISA = qw(Exporter); @EXPORT = qw(&error &dberror); %EXPORT_TAGS = qw(); @EXPORT_OK = qw(&error &dberror); our $dbh = DBI->connect("dbi:Pg:dbname=pr0n;host=" . $Sesse::pr0n::Config::db_host, $Sesse::pr0n::Config::db_username, $Sesse::pr0n::Config::db_password) or die "Couldn't connect to PostgreSQL database: " . DBI->errstr; our $mimetypes = new MIME::Types; Apache2::ServerUtil->server->log_error("Initializing pr0n $VERSION"); } END { our $dbh; $dbh->disconnect; } our ($dbh, $mimetypes); sub error { my ($r,$err,$status,$title) = @_; if (!defined($status) || !defined($title)) { $status = 500; $title = "Internal server error"; } $r->content_type('text/html; charset=utf-8'); $r->status($status); header($r, $title); $r->print("

Error: $err

\n"); footer($r); $r->log->error($err); $r->log->error("Stack trace follows: " . Carp::longmess()); ModPerl::Util::exit(); } sub dberror { my ($r,$err) = @_; error($r, "$err (DB error: " . $dbh->errstr . ")"); } sub header { my ($r,$title) = @_; $r->content_type("text/html; charset=utf-8"); # Fetch quote if we're itk-bilder.samfundet.no my $quote = ""; if ($r->get_server_name eq 'itk-bilder.samfundet.no') { $quote = LWP::Simple::get("http://itk.samfundet.no/include/quotes.cli.php"); $quote = "Error: Could not fetch quotes." if (!defined($quote)); } Sesse::pr0n::Templates::print_template($r, "header", { title => $title, quotes => Encode::decode_utf8($quote) }); } sub footer { my ($r) = @_; Sesse::pr0n::Templates::print_template($r, "footer", { version => $Sesse::pr0n::Common::VERSION }); } sub scale_aspect { my ($width, $height, $thumbxres, $thumbyres) = @_; unless ($thumbxres >= $width && $thumbyres >= $height) { my $sfh = $width / $thumbxres; my $sfv = $height / $thumbyres; if ($sfh > $sfv) { $width /= $sfh; $height /= $sfh; } else { $width /= $sfv; $height /= $sfv; } $width = POSIX::floor($width); $height = POSIX::floor($height); } return ($width, $height); } sub get_query_string { my ($param, $defparam) = @_; my $first = 1; my $str = ""; while (my ($key, $value) = each %$param) { next unless defined($value); next if (defined($defparam->{$key}) && $value == $defparam->{$key}); $value = pretty_escape($value); $str .= ($first) ? "?" : ';'; $str .= "$key=$value"; $first = 0; } return $str; } # This is not perfect (it can't handle "_ " right, for one), but it will do for now sub weird_space_encode { my $val = shift; if ($val =~ /_/) { return "_" x (length($val) * 2); } else { return "_" x (length($val) * 2 - 1); } } sub weird_space_unencode { my $val = shift; if (length($val) % 2 == 0) { return "_" x (length($val) / 2); } else { return " " x ((length($val) + 1) / 2); } } sub pretty_escape { my $value = shift; $value =~ s/(([_ ])\2*)/weird_space_encode($1)/ge; $value = URI::Escape::uri_escape($value); $value =~ s/%2F/\//g; return $value; } sub pretty_unescape { my $value = shift; # URI unescaping is already done for us $value =~ s/(_+)/weird_space_unencode($1)/ge; return $value; } sub print_link { my ($r, $title, $baseurl, $param, $defparam, $accesskey) = @_; my $str = "print($str); } sub get_dbh { # Check that we are alive if (!(defined($dbh) && $dbh->ping)) { # Try to reconnect Apache2::ServerUtil->server->log_error("Lost contact with PostgreSQL server, trying to reconnect..."); unless ($dbh = DBI->connect("dbi:Pg:dbname=pr0n;host=" . $Sesse::pr0n::Config::db_host, $Sesse::pr0n::Config::db_username, $Sesse::pr0n::Config::db_password)) { $dbh = undef; die "Couldn't connect to PostgreSQL database"; } } return $dbh; } sub get_base { my $r = shift; return $r->dir_config('ImageBase'); } sub get_disk_location { my ($r, $id) = @_; my $dir = POSIX::floor($id / 256); return get_base($r) . "images/$dir/$id.jpg"; } sub get_cache_location { my ($r, $id, $width, $height, $infobox) = @_; my $dir = POSIX::floor($id / 256); if ($infobox eq 'both') { return get_base($r) . "cache/$dir/$id-$width-$height.jpg"; } elsif ($infobox eq 'nobox') { return get_base($r) . "cache/$dir/$id-$width-$height-nobox.jpg"; } else { return get_base($r) . "cache/$dir/$id-$width-$height-box.png"; } } sub get_mipmap_location { my ($r, $id, $width, $height) = @_; my $dir = POSIX::floor($id / 256); return get_base($r) . "cache/$dir/$id-mipmap-$width-$height.jpg"; } sub update_image_info { my ($r, $id, $width, $height) = @_; # Also find the date taken if appropriate (from the EXIF tag etc.) my $exiftool = Image::ExifTool->new; $exiftool->ExtractInfo(get_disk_location($r, $id)); my $info = $exiftool->GetInfo(); my $datetime = undef; if (defined($info->{'DateTimeOriginal'})) { # Parse the date and time over to ISO format if ($info->{'DateTimeOriginal'} =~ /^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)(?:\+\d\d:\d\d)?$/ && $1 > 1990) { $datetime = "$1-$2-$3 $4:$5:$6"; } } { local $dbh->{AutoCommit} = 0; # EXIF information $dbh->do('DELETE FROM exif_info WHERE image=?', undef, $id) or die "Couldn't delete old EXIF information in SQL: $!"; my $q = $dbh->prepare('INSERT INTO exif_info (image,key,value) VALUES (?,?,?)') or die "Couldn't prepare inserting EXIF information: $!"; for my $key (keys %$info) { next if ref $info->{$key}; $q->execute($id, $key, guess_charset($info->{$key})) or die "Couldn't insert EXIF information in database: $!"; } # Model/Lens my $model = $exiftool->GetValue('Model', 'PrintConv'); my $lens = $exiftool->GetValue('Lens', 'PrintConv'); $lens = $exiftool->GetValue('LensSpec', 'PrintConv') if (!defined($lens)); $model =~ s/^\s*//; $model =~ s/\s*$//; $model = undef if (length($model) == 0); $lens =~ s/^\s*//; $lens =~ s/\s*$//; $lens = undef if (length($lens) == 0); # Now update the main table with the information we've got $dbh->do('UPDATE images SET width=?, height=?, date=?, model=?, lens=? WHERE id=?', undef, $width, $height, $datetime, $model, $lens, $id) or die "Couldn't update width/height in SQL: $!"; # Tags my @tags = $exiftool->GetValue('Keywords', 'ValueConv'); $dbh->do('DELETE FROM tags WHERE image=?', undef, $id) or die "Couldn't delete old tag information in SQL: $!"; $q = $dbh->prepare('INSERT INTO tags (image,tag) VALUES (?,?)') or die "Couldn't prepare inserting tag information: $!"; for my $tag (@tags) { $q->execute($id, guess_charset($tag)) or die "Couldn't insert tag information in database: $!"; } # update the last_picture cache as well (this should of course be done # via a trigger, but this is less complicated :-) ) $dbh->do('UPDATE last_picture_cache SET last_picture=GREATEST(last_picture, ?) WHERE (vhost,event)=(SELECT vhost,event FROM images WHERE id=?)', undef, $datetime, $id) or die "Couldn't update last_picture in SQL: $!"; } } sub check_access { my $r = shift; #return qw(sesse Sesse); my $auth = $r->headers_in->{'authorization'}; if (!defined($auth)) { output_401($r); return undef; } if ($auth =~ /^Basic ([a-zA-Z0-9+\/]+=*)$/) { return check_basic_auth($r, $1); } if ($auth =~ /^Digest (.*)$/) { return check_digest_auth($r, $1); } output_401($r); return undef; } sub output_401 { my ($r, %options) = @_; $r->content_type('text/plain; charset=utf-8'); $r->status(401); $r->headers_out->{'www-authenticate'} = 'Basic realm="pr0n.sesse.net"'; # Digest auth is disabled for now, due to various client problems. if (0 && ($options{'DigestAuth'} // 1)) { # We make our nonce similar to the scheme of RFC2069 section 2.1.1, # with some changes: We don't care about client IP (these have a nasty # tendency to change from request to request when load-balancing # proxies etc. are being used), and we use HMAC instead of simple # hashing simply because that's a better signing method. # # NOTE: For some weird reason, Digest::HMAC_SHA1 doesn't like taking # the output from time directly (it gives a different response), so we # forcefully stringify the argument. my $ts = time; my $nonce = Digest::HMAC_SHA1->hmac_sha1_hex($ts . "", $Sesse::pr0n::Config::db_password); my $stale_nonce_text = ""; $stale_nonce_text = ", stale=\"true\"" if ($options{'StaleNonce'} // 0); $r->headers_out->{'www-authenticate'} = "Digest realm=\"pr0n.sesse.net\", " . "nonce=\"$nonce\", " . "opaque=\"$ts\", " . "qop=\"auth\"" . $stale_nonce_text; # FIXME: support auth-int } $r->print("Need authorization\n"); } sub check_basic_auth { my ($r, $auth) = @_; my ($raw_user, $pass) = split /:/, MIME::Base64::decode_base64($auth); my ($user, $takenby) = extract_takenby($raw_user); my $ref = $dbh->selectrow_hashref('SELECT sha1password,digest_ha1_hex FROM users WHERE username=? AND vhost=?', undef, $user, $r->get_server_name); if (!defined($ref) || $ref->{'sha1password'} ne Digest::SHA1::sha1_base64($pass)) { $r->content_type('text/plain; charset=utf-8'); $r->log->warn("Authentication failed for $user/$takenby"); output_401($r); return undef; } $r->log->info("Authentication succeeded for $user/$takenby"); # Make sure we can use Digest authentication in the future with this password. my $ha1 = Digest::MD5::md5_hex($user . ':pr0n.sesse.net:' . $pass); if (!defined($ref->{'digest_ha1_hex'}) || $ref->{'digest_ha1_hex'} ne $ha1) { $dbh->do('UPDATE users SET digest_ha1_hex=? WHERE username=? AND vhost=?', undef, $ha1, $user, $r->get_server_name) or die "Couldn't update: " . $dbh->errstr; $r->log->info("Updated Digest auth hash for for $user"); } return ($user, $takenby); } sub check_digest_auth { my ($r, $auth) = @_; # We're a bit more liberal than RFC2069 in the parsing here, allowing # quoted strings everywhere. my %auth = (); while ($auth =~ s/^ ([a-zA-Z]+) # key = ( [^",]* # either something that doesn't contain comma or quotes | " ( [^"\\] | \\ . ) * " # or a full quoted string ) (?: (?: , \s* ) + | $ ) # delimiter(s), or end of string //x) { my ($key, $value) = ($1, $2); if ($value =~ /^"(.*)"$/) { $value = $1; $value =~ s/\\(.)/$1/g; } $auth{$key} = $value; } unless (exists($auth{'username'}) && exists($auth{'uri'}) && exists($auth{'nonce'}) && exists($auth{'opaque'}) && exists($auth{'response'})) { output_401($r); return undef; } if ($r->uri ne $auth{'uri'}) { output_401($r); return undef; } # Verify that the opaque data does indeed look like a timestamp, and that the nonce # is indeed a signed version of it. if ($auth{'opaque'} !~ /^\d+$/) { output_401($r); return undef; } my $compare_nonce = Digest::HMAC_SHA1->hmac_sha1_hex($auth{'opaque'}, $Sesse::pr0n::Config::db_password); if ($auth{'nonce'} ne $compare_nonce) { output_401($r); return undef; } # Now look up the user's HA1 from the database, and calculate HA2. my ($user, $takenby) = extract_takenby($auth{'username'}); my $ref = $dbh->selectrow_hashref('SELECT digest_ha1_hex FROM users WHERE username=? AND vhost=?', undef, $user, $r->get_server_name); if (!defined($ref)) { output_401($r); return undef; } if (!defined($ref->{'digest_ha1_hex'}) || $ref->{'digest_ha1_hex'} !~ /^[0-9a-f]{32}$/) { # A user that exists but has empty HA1 is a user that's not # ready for digest auth, so we hack it and resend 401, # only this time without digest auth. output_401($r, DigestAuth => 0); return undef; } my $ha1 = $ref->{'digest_ha1_hex'}; my $ha2 = Digest::MD5::md5_hex($r->method . ':' . $auth{'uri'}); my $response; if (exists($auth{'qop'}) && $auth{'qop'} eq 'auth') { unless (exists($auth{'nc'}) && exists($auth{'cnonce'})) { output_401($r); return undef; } $response = $ha1; $response .= ':' . $auth{'nonce'}; $response .= ':' . $auth{'nc'}; $response .= ':' . $auth{'cnonce'}; $response .= ':' . $auth{'qop'}; $response .= ':' . $ha2; } else { $response = $ha1; $response .= ':' . $auth{'nonce'}; $response .= ':' . $ha2; } if ($auth{'response'} ne Digest::MD5::md5_hex($response)) { output_401($r); return undef; } # OK, everything is good, and there's only one thing we need to check: That the nonce # isn't too old. If it is, but everything else is ok, we tell the browser that and it # will re-encrypt with the new nonce. my $timediff = time - $auth{'opaque'}; if ($timediff < 0 || $timediff > 300) { output_401($r, StaleNonce => 1); return undef; } return ($user, $takenby); } sub extract_takenby { my ($user) = shift; # WinXP is stupid :-) if ($user =~ /^.*\\(.*)$/) { $user = $1; } my $takenby; if ($user =~ /^([a-zA-Z0-9^_-]+)\@([a-zA-Z0-9^_-]+)$/) { $user = $1; $takenby = $2; } else { ($takenby = $user) =~ s/^([a-zA-Z])/uc($1)/e; } return ($user, $takenby); } sub stat_image { my ($r, $event, $filename) = (@_); my $ref = $dbh->selectrow_hashref( 'SELECT id FROM images WHERE event=? AND filename=?', undef, $event, $filename); if (!defined($ref)) { return (undef, undef, undef); } return stat_image_from_id($r, $ref->{'id'}); } sub stat_image_from_id { my ($r, $id) = @_; my $fname = get_disk_location($r, $id); my (undef, undef, undef, undef, undef, undef, undef, $size, undef, $mtime) = stat($fname) or return (undef, undef, undef); return ($fname, $size, $mtime); } # Takes in an image ID and a set of resolutions, and returns (generates if needed) # the smallest mipmap larger than the largest of them. sub make_mipmap { my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, @res) = @_; my ($img, $mmimg, $width, $height); my $physical_fname = get_disk_location($r, $id); # If we don't know the size, we'll need to read it in anyway if (!defined($dbwidth) || !defined($dbheight)) { $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale); $width = $img->Get('columns'); $height = $img->Get('rows'); } else { $width = $dbwidth; $height = $dbheight; } # Generate the list of mipmaps my @mmlist = (); my $mmwidth = $width; my $mmheight = $height; while ($mmwidth > 1 || $mmheight > 1) { my $new_mmwidth = POSIX::floor($mmwidth / 2); my $new_mmheight = POSIX::floor($mmheight / 2); $new_mmwidth = 1 if ($new_mmwidth < 1); $new_mmheight = 1 if ($new_mmheight < 1); my $large_enough = 1; for my $i (0..($#res/2)) { my ($xres, $yres) = ($res[$i*2], $res[$i*2+1]); if ($xres == -1 || $xres > $new_mmwidth || $yres > $new_mmheight) { $large_enough = 0; last; } } last if (!$large_enough); $mmwidth = $new_mmwidth; $mmheight = $new_mmheight; push @mmlist, [ $mmwidth, $mmheight ]; } # Ensure that all of them are OK my $last_good_mmlocation; for my $i (0..$#mmlist) { my $last = ($i == $#mmlist); my $mmres = $mmlist[$i]; my $mmlocation = get_mipmap_location($r, $id, $mmres->[0], $mmres->[1]); if (! -r $mmlocation or (-M $mmlocation > -M $physical_fname)) { if (!defined($img)) { if (defined($last_good_mmlocation)) { if ($can_use_qscale) { $img = Sesse::pr0n::QscaleProxy->new; } else { $img = Image::Magick->new; } $img->Read($last_good_mmlocation); } else { $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale); } } my $cimg; if ($last) { $cimg = $img; } else { $cimg = $img->Clone(); } $r->log->info("Making mipmap for $id: " . $mmres->[0] . " x " . $mmres->[1]); $cimg->Resize(width=>$mmres->[0], height=>$mmres->[1], filter=>'Lanczos', 'sampling-factor'=>'1x1'); $cimg->Strip(); my $err = $cimg->write( filename => $mmlocation, quality => 95, 'sampling-factor' => '1x1' ); $img = $cimg; } else { $last_good_mmlocation = $mmlocation; } if ($last && !defined($img)) { # OK, read in the smallest one if ($can_use_qscale) { $img = Sesse::pr0n::QscaleProxy->new; } else { $img = Image::Magick->new; } my $err = $img->Read($mmlocation); } } if (!defined($img)) { $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale); } return $img; } sub read_original_image { my ($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale) = @_; my $physical_fname = get_disk_location($r, $id); # Read in the original image my $magick; if ($can_use_qscale && ($filename =~ /\.jpeg$/i || $filename =~ /\.jpg$/i)) { $magick = Sesse::pr0n::QscaleProxy->new; } else { $magick = Image::Magick->new; } my $err; # ImageMagick can handle NEF files, but it does it by calling dcraw as a delegate. # The delegate support is rather broken and causes very odd stuff to happen when # more than one thread does this at the same time. Thus, we simply do it ourselves. if ($filename =~ /\.(nef|cr2)$/i) { # this would suffice if ImageMagick gets to fix their handling # $physical_fname = "NEF:$physical_fname"; open DCRAW, "-|", "dcraw", "-w", "-c", $physical_fname or error("dcraw: $!"); $err = $magick->Read(file => \*DCRAW); close(DCRAW); } else { # We always want YCbCr JPEGs. Setting this explicitly here instead of using # RGB is slightly faster (no colorspace conversion needed) and works equally # well for our uses, as long as we don't need to draw an information box, # which trickles several ImageMagick bugs related to colorspace handling. # (Ideally we'd be able to keep the image subsampled and # planar, but that would probably be difficult for ImageMagick to expose.) #if (!$infobox) { # $magick->Set(colorspace=>'YCbCr'); #} $err = $magick->Read($physical_fname); } if ($err) { $r->log->warn("$physical_fname: $err"); $err =~ /(\d+)/; if ($1 >= 400) { undef $magick; error($r, "$physical_fname: $err"); } } # If we use ->[0] unconditionally, text rendering (!) seems to crash my $img; if (ref($magick) !~ /Image::Magick/) { $img = $magick; } else { $img = (scalar @$magick > 1) ? $magick->[0] : $magick; } my $width = $img->Get('columns'); my $height = $img->Get('rows'); # Update the SQL database if it doesn't contain the required info if (!defined($dbwidth) || !defined($dbheight)) { $r->log->info("Updating width/height for $id: $width x $height"); update_image_info($r, $id, $width, $height); } return $img; } sub ensure_cached { my ($r, $filename, $id, $dbwidth, $dbheight, $infobox, $xres, $yres, @otherres) = @_; my $fname = get_disk_location($r, $id); if ($infobox ne 'box') { unless (defined($xres) && (!defined($dbwidth) || !defined($dbheight) || $xres < $dbwidth || $yres < $dbheight || $xres == -1)) { return ($fname, undef); } } my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox); my $err; if (! -r $cachename or (-M $cachename > -M $fname)) { # If we are in overload mode (aka Slashdot mode), refuse to generate # new thumbnails. if (Sesse::pr0n::Overload::is_in_overload($r)) { $r->log->warn("In overload mode, not scaling $id to $xres x $yres"); error($r, 'System is in overload mode, not doing any scaling'); } # If we're being asked for just the box, make a new image with just the box. # We don't care about @otherres since each of these images are # already pretty cheap to generate, but we need the exact width so we can make # one in the right size. if ($infobox eq 'box') { my ($img, $width, $height); # This is slow, but should fortunately almost never happen, so don't bother # special-casing it. if (!defined($dbwidth) || !defined($dbheight)) { $img = read_original_image($r, $filename, $id, $dbwidth, $dbheight, 0); $width = $img->Get('columns'); $height = $img->Get('rows'); @$img = (); } else { $img = Image::Magick->new; $width = $dbwidth; $height = $dbheight; } if (defined($xres) && defined($yres)) { ($width, $height) = scale_aspect($width, $height, $xres, $yres); } $height = 24; $img->Set(size=>($width . "x" . $height)); $img->Read('xc:white'); my $info = Image::ExifTool::ImageInfo($fname); if (make_infobox($img, $info, $r)) { $img->Quantize(colors=>16, dither=>'False'); # Since the image is grayscale, ImageMagick overrides us and writes this # as grayscale anyway, but at least we get rid of the alpha channel this # way. $img->Set(type=>'Palette'); } else { # Not enough room for the text, make a tiny dummy transparent infobox @$img = (); $img->Set(size=>"1x1"); $img->Read('null:'); $width = 1; $height = 1; } $err = $img->write(filename => $cachename, quality => 90, depth => 8); $r->log->info("New infobox cache: $width x $height for $id.jpg"); return ($cachename, 'image/png'); } my $can_use_qscale = 0; if ($infobox eq 'nobox') { $can_use_qscale = 1; } my $img = make_mipmap($r, $filename, $id, $dbwidth, $dbheight, $can_use_qscale, $xres, $yres, @otherres); while (defined($xres) && defined($yres)) { my ($nxres, $nyres) = (shift @otherres, shift @otherres); my $cachename = get_cache_location($r, $id, $xres, $yres, $infobox); my $cimg; if (defined($nxres) && defined($nyres)) { # we have more resolutions to scale, so don't throw # the image away $cimg = $img->Clone(); } else { $cimg = $img; } my $width = $img->Get('columns'); my $height = $img->Get('rows'); my ($nwidth, $nheight) = scale_aspect($width, $height, $xres, $yres); my $filter = 'Lanczos'; my $quality = 87; my $sf = "1x1"; if ($xres != -1) { $cimg->Resize(width=>$nwidth, height=>$nheight, filter=>$filter, 'sampling-factor'=>$sf); } if (($nwidth >= 800 || $nheight >= 600 || $xres == -1) && $infobox ne 'nobox') { my $info = Image::ExifTool::ImageInfo($fname); make_infobox($cimg, $info, $r); } # Strip EXIF tags etc. $cimg->Strip(); { my %parms = ( filename => $cachename, quality => $quality ); if (($nwidth >= 640 && $nheight >= 480) || ($nwidth >= 480 && $nheight >= 640)) { $parms{'interlace'} = 'Plane'; } if (defined($sf)) { $parms{'sampling-factor'} = $sf; } $err = $cimg->write(%parms); } undef $cimg; ($xres, $yres) = ($nxres, $nyres); $r->log->info("New cache: $nwidth x $nheight for $id.jpg"); } undef $img; if ($err) { $r->log->warn("$fname: $err"); $err =~ /(\d+)/; if ($1 >= 400) { #@$magick = (); error($r, "$fname: $err"); } } } return ($cachename, 'image/jpeg'); } sub get_mimetype_from_filename { my $filename = shift; my MIME::Type $type = $mimetypes->mimeTypeOf($filename); $type = "image/jpeg" if (!defined($type)); return $type; } sub make_infobox { my ($img, $info, $r) = @_; # The infobox is of the form # "Time - date - focal length, shutter time, aperture, sensitivity, exposure bias - flash", # possibly with some parts omitted -- the middle part is known as the "classic # fields"; note the comma separation. Every field has an associated "bold flag" # in the second part. my $shutter_priority = (defined($info->{'ExposureProgram'}) && $info->{'ExposureProgram'} =~ /shutter\b.*\bpriority/i); my $aperture_priority = (defined($info->{'ExposureProgram'}) && $info->{'ExposureProgram'} =~ /aperture\b.*\bpriority/i); my @classic_fields = (); if (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)(?:\.\d+)?\s*(?:mm)?$/) { push @classic_fields, [ $1 . "mm", 0 ]; } elsif (defined($info->{'FocalLength'}) && $info->{'FocalLength'} =~ /^(\d+)\/(\d+)$/) { push @classic_fields, [ (sprintf "%.1fmm", ($1/$2)), 0 ]; } if (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+)\/(\d+)$/) { my ($a, $b) = ($1, $2); my $gcd = gcd($a, $b); push @classic_fields, [ $a/$gcd . "/" . $b/$gcd . "s", $shutter_priority ]; } elsif (defined($info->{'ExposureTime'}) && $info->{'ExposureTime'} =~ /^(\d+(?:\.\d+)?)$/) { push @classic_fields, [ $1 . "s", $shutter_priority ]; } if (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\/(\d+)$/) { my $f = $1/$2; if ($f >= 10) { push @classic_fields, [ (sprintf "f/%.0f", $f), $aperture_priority ]; } else { push @classic_fields, [ (sprintf "f/%.1f", $f), $aperture_priority ]; } } elsif (defined($info->{'FNumber'}) && $info->{'FNumber'} =~ /^(\d+)\.(\d+)$/) { my $f = $info->{'FNumber'}; if ($f >= 10) { push @classic_fields, [ (sprintf "f/%.0f", $f), $aperture_priority ]; } else { push @classic_fields, [ (sprintf "f/%.1f", $f), $aperture_priority ]; } } # Apache2::ServerUtil->server->log_error(join(':', keys %$info)); my $iso = undef; if (defined($info->{'NikonD1-ISOSetting'})) { $iso = $info->{'NikonD1-ISOSetting'}; } elsif (defined($info->{'ISO'})) { $iso = $info->{'ISO'}; } elsif (defined($info->{'ISOSetting'})) { $iso = $info->{'ISOSetting'}; } if (defined($iso) && $iso =~ /(\d+)/) { push @classic_fields, [ $1 . " ISO", 0 ]; } if (defined($info->{'ExposureBiasValue'}) && $info->{'ExposureBiasValue'} ne "0") { push @classic_fields, [ $info->{'ExposureBiasValue'} . " EV", 0 ]; } elsif (defined($info->{'ExposureCompensation'}) && $info->{'ExposureCompensation'} ne "0") { push @classic_fields, [ $info->{'ExposureCompensation'} . " EV", 0 ]; } # Now piece together the rest my @parts = (); if (defined($info->{'DateTimeOriginal'}) && $info->{'DateTimeOriginal'} =~ /^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)$/ && $1 >= 1990) { push @parts, [ "$1-$2-$3 $4:$5", 0 ]; } if (defined($info->{'Model'})) { my $model = $info->{'Model'}; $model =~ s/^\s+//; $model =~ s/\s+$//; push @parts, [ ' - ', 0 ] if (scalar @parts > 0); push @parts, [ $model, 0 ]; } # classic fields if (scalar @classic_fields > 0) { push @parts, [ ' - ', 0 ] if (scalar @parts > 0); my $first_elem = 1; for my $field (@classic_fields) { push @parts, [ ', ', 0 ] if (!$first_elem); $first_elem = 0; push @parts, $field; } } if (defined($info->{'Flash'})) { if ($info->{'Flash'} =~ /did not fire/i || $info->{'Flash'} =~ /no flash/i || $info->{'Flash'} =~ /not fired/i || $info->{'Flash'} =~ /Off/) { push @parts, [ ' - ', 0 ] if (scalar @parts > 0); push @parts, [ "No flash", 0 ]; } elsif ($info->{'Flash'} =~ /fired/i || $info->{'Flash'} =~ /On/) { push @parts, [ ' - ', 0 ] if (scalar @parts > 0); push @parts, [ "Flash", 0 ]; } else { push @parts, [ ' - ', 0 ] if (scalar @parts > 0); push @parts, [ $info->{'Flash'}, 0 ]; } } return 0 if (scalar @parts == 0); # Find the required width my $th = 0; my $tw = 0; for my $part (@parts) { my $font; if ($part->[1]) { $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf'; } else { $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf'; } my (undef, undef, $h, undef, $w) = ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12)); $tw += $w; $th = $h if ($h > $th); } return 0 if ($tw > $img->Get('columns')); my $x = 0; my $y = $img->Get('rows') - 24; # Hit exact DCT blocks $y -= ($y % 8); my $points = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), ($img->Get('rows') - 1); my $lpoints = sprintf "%u,%u %u,%u", $x, $y, ($img->Get('columns') - 1), $y; $img->Draw(primitive=>'rectangle', stroke=>'white', fill=>'white', points=>$points); $img->Draw(primitive=>'line', stroke=>'black', points=>$lpoints); # Start writing out the text $x = ($img->Get('columns') - $tw) / 2; my $room = ($img->Get('rows') - 1 - $y - $th); $y = ($img->Get('rows') - 1) - $room/2; for my $part (@parts) { my $font; if ($part->[1]) { $font = '/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf'; } else { $font = '/usr/share/fonts/truetype/msttcorefonts/Arial.ttf'; } $img->Annotate(text=>$part->[0], font=>$font, pointsize=>12, x=>int($x), y=>int($y)); $x += ($img->QueryFontMetrics(text=>$part->[0], font=>$font, pointsize=>12))[4]; } return 1; } sub gcd { my ($a, $b) = @_; return $a if ($b == 0); return gcd($b, $a % $b); } sub add_new_event { my ($r, $dbh, $id, $date, $desc) = @_; my @errors = (); if (!defined($id) || $id =~ /^\s*$/ || $id !~ /^([a-zA-Z0-9-]+)$/) { push @errors, "Manglende eller ugyldig ID."; } if (!defined($date) || $date =~ /^\s*$/ || $date =~ /[<>&]/ || length($date) > 100) { push @errors, "Manglende eller ugyldig dato."; } if (!defined($desc) || $desc =~ /^\s*$/ || $desc =~ /[<>&]/ || length($desc) > 100) { push @errors, "Manglende eller ugyldig beskrivelse."; } if (scalar @errors > 0) { return @errors; } my $vhost = $r->get_server_name; $dbh->do("INSERT INTO events (event,date,name,vhost) VALUES (?,?,?,?)", undef, $id, $date, $desc, $vhost) or return ("Kunne ikke sette inn ny hendelse" . $dbh->errstr); $dbh->do("INSERT INTO last_picture_cache (vhost,event,last_picture) VALUES (?,?,NULL)", undef, $vhost, $id) or return ("Kunne ikke sette inn ny cache-rad" . $dbh->errstr); purge_cache($r, "/"); return (); } sub guess_charset { my $text = shift; my $decoded; eval { $decoded = Encode::decode("utf-8", $text, Encode::FB_CROAK); }; if ($@) { $decoded = Encode::decode("iso8859-1", $text); } return $decoded; } # Depending on your front-end cache, you might want to get creative somehow here. # This example assumes you have a front-end cache and it can translate an X-Pr0n-Purge # regex tacked onto a request into something useful. The elements given in # should not be regexes, though, as e.g. Squid will not be able to handle that. sub purge_cache { my ($r, @elements) = @_; return if (scalar @elements == 0); my @pe = (); for my $elem (@elements) { $r->log->info("Purging $elem"); (my $e = $elem) =~ s/[.+*|()]/\\$&/g; push @pe, $e; } my $regex = "^"; if (scalar @pe == 1) { $regex .= $pe[0]; } else { $regex .= "(" . join('|', @pe) . ")"; } $regex .= "(\\?.*)?\$"; $r->headers_out->{'X-Pr0n-Purge'} = $regex; $r->log->info($r->headers_out->{'X-Pr0n-Purge'}); } # Find a list of all cache URLs for a given image, given what we have on disk. sub get_all_cache_urls { my ($r, $dbh, $id) = @_; my $dir = POSIX::floor($id / 256); my @ret = (); my $q = $dbh->prepare('SELECT event, filename FROM images WHERE id=?') or die "Couldn't prepare: " . $dbh->errstr; $q->execute($id) or die "Couldn't find event and filename: " . $dbh->errstr; my $ref = $q->fetchrow_hashref; my $event = $ref->{'event'}; my $filename = $ref->{'filename'}; $q->finish; my $base = get_base($r) . "cache/$dir"; for my $file (<$base/$id-*>) { my $fname = File::Basename::basename($file); if ($fname =~ /^$id-mipmap-.*\.jpg$/) { # Mipmaps don't have an URL, ignore } elsif ($fname =~ /^$id--1--1\.jpg$/) { push @ret, "/$event/$filename"; } elsif ($fname =~ /^$id-(\d+)-(\d+)\.jpg$/) { push @ret, "/$event/$1x$2/$filename"; } elsif ($fname =~ /^$id-(\d+)-(\d+)-nobox\.jpg$/) { push @ret, "/$event/$1x$2/nobox/$filename"; } elsif ($fname =~ /^$id--1--1-box\.png$/) { push @ret, "/$event/box/$filename"; } elsif ($fname =~ /^$id-(\d+)-(\d+)-box\.png$/) { push @ret, "/$event/$1x$2/box/$filename"; } else { $r->log->warn("Couldn't find a purging URL for $fname"); } } return @ret; } 1;