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|
package VNDB::Func;
use strict;
use warnings;
use TUWF::Misc 'uri_escape';
use Exporter 'import';
use POSIX 'strftime', 'floor';
use Socket 'inet_pton', 'inet_ntop', 'AF_INET', 'AF_INET6';
use Digest::SHA 'sha1';
use VNDB::Config;
use VNDB::Types;
use VNDB::BBCode;
our @EXPORT = ('bb_format', qw|
in
idcmp
shorten
resolution
gtintype
imgsize
norm_ip
minage
fmtvote fmtmedia fmtage fmtdate fmtrating fmtspoil fmtanimation
rdate
imgpath imgurl
tlang tattr
query_encode
md2html
is_insecurepass
|);
# Simple "is this element in the array?" function, using 'eq' to test equality.
# Supports both an @array and \@array.
# Usage:
#
# my $contains_hi = in 'hi', qw/ a b hi c /; # true
#
sub in {
my($q, @a) = @_;
$_ eq $q && return 1 for map ref $_ eq 'ARRAY' ? @$_ : ($_), @a;
0
}
# Compare two vndbids, using proper numeric order
sub idcmp($$) {
my($a1, $a2) = $_[0] =~ /^([a-z]+)([0-9]+)$/;
my($b1, $b2) = $_[1] =~ /^([a-z]+)([0-9]+)$/;
$a1 cmp $b1 || $a2 <=> $b2
}
sub shorten {
my($str, $len) = @_;
return length($str) > $len ? substr($str, 0, $len-3).'...' : $str;
}
sub resolution {
my($x,$y) = @_;
($x,$y) = ($x->{reso_x}, $x->{reso_y}) if ref $x;
$x ? "${x}x${y}" : $y == 1 ? 'Non-standard' : undef
}
# GTIN code as argument,
# Returns 'JAN', 'EAN', 'UPC', 'ISBN' or undef,
# Also 'normalizes' the first argument in place
sub gtintype {
$_[0] =~ s/[^\d]+//g;
$_[0] =~ s/^0+//;
return undef if $_[0] !~ /^[0-9]{10,13}$/; # I've yet to see a UPC code shorter than 10 digits assigned to a game
$_[0] = ('0'x(12-length $_[0])) . $_[0] if length($_[0]) < 12; # pad with zeros to GTIN-12
my $c = shift;
return undef if $c !~ /^[0-9]{12,13}$/;
$c = "0$c" if length($c) == 12; # pad with another zero for GTIN-13
# calculate check digit according to
# http://www.gs1.org/productssolutions/barcodes/support/check_digit_calculator.html#how
my @n = reverse split //, $c;
my $n = shift @n;
$n += $n[$_] * ($_ % 2 != 0 ? 1 : 3) for (0..$#n);
return undef if $n % 10 != 0;
# Do some rough guesses based on:
# http://www.gs1.org/productssolutions/barcodes/support/prefix_list.html
# and http://en.wikipedia.org/wiki/List_of_GS1_country_codes
local $_ = $c;
return 'JAN' if /^4[59]/; # prefix code 450-459 & 490-499
return 'UPC' if /^(?:0[01]|0[6-9]|13|75[45])/; # prefix code 000-019 & 060-139 & 754-755
return 'ISBN' if /^97[89]/;
return undef if /^(?:0[2-5]|2|9[6-9])/; # some codes we don't want: 020–059 & 200-299 & non-ISBN 977-999
return 'EAN'; # let's just call everything else EAN :)
}
# arguments: <image size>, <max dimensions>
# returns the size of the thumbnail with the same aspect ratio as the full-size
# image, but fits within the specified maximum dimensions
sub imgsize {
my($ow, $oh, $sw, $sh) = @_;
return ($ow, $oh) if $ow <= $sw && $oh <= $sh;
if($ow/$oh > $sw/$sh) { # width is the limiting factor
$oh *= $sw/$ow;
$ow = $sw;
} else {
$ow *= $sh/$oh;
$oh = $sh;
}
return (int ($ow+0.5), int ($oh+0.5));
}
# Normalized IP address to use for duplicate detection/throttling. For IPv4
# this is the /23 subnet (is this enough?), for IPv6 the /48 subnet, with the
# least significant bits of the address zero'd.
sub norm_ip {
my $ip = shift;
# There's a whole bunch of IP manipulation modules on CPAN, but many seem
# quite bloated and still don't offer the functionality to return an IP
# with its mask applied (admittedly not a common operation). The libc
# socket functions will do fine in parsing and formatting addresses, and
# the actual masking is quite trivial in binary form.
my $v4 = inet_pton AF_INET, $ip;
if($v4) {
$v4 =~ s/(..)(.)./$1 . chr(ord($2) & 254) . "\0"/se;
return inet_ntop AF_INET, $v4;
}
$ip = inet_pton AF_INET6, $ip;
return '::' if !$ip;
$ip =~ s/^(.{6}).+$/$1 . "\0"x10/se;
return inet_ntop AF_INET6, $ip;
}
sub minage {
my($a, $ex) = @_;
return 'Unknown' if !defined $a;
$a = $AGE_RATING{$a};
$ex && $a->{ex} ? "$a->{txt} (e.g. $a->{ex})" : $a->{txt}
}
sub _path {
my($t, $id) = $_[1] =~ /([a-z]+)([0-9]+)/;
sprintf '%s/%s%s/%02d/%d.%s', $_[0], $t, $_[2] ? ".$_[2]" : '', $id%100, $id, $_[3]||'jpg';
}
# imgpath($image_id, $dir, $format)
# $dir = empty || 't' || 'orig'
# $format = empty || $file_ext
sub imgpath { _path config->{var_path}.'/static', @_ }
# imgurl($image_id, $dir, $format)
sub imgurl { _path config->{url_static}, @_ }
# Formats a vote number.
sub fmtvote {
return !$_[0] ? '-' : $_[0] % 10 == 0 ? $_[0]/10 : sprintf '%.1f', $_[0]/10;
}
# Formats a media string ("1 CD", "2 CDs", "Internet download", etc)
sub fmtmedia {
my($med, $qty) = @_;
$med = $MEDIUM{$med};
join ' ',
($med->{qty} ? ($qty) : ()),
$med->{ $med->{qty} && $qty > 1 ? 'plural' : 'txt' };
}
# Formats a UNIX timestamp as a '<number> <unit> ago' string
sub fmtage {
my $a = time-shift;
my($t, $single, $plural) =
$a > 60*60*24*365*2 ? ( $a/60/60/24/365, 'year', 'years' ) :
$a > 60*60*24*(365/12)*2 ? ( $a/60/60/24/(365/12), 'month', 'months' ) :
$a > 60*60*24*7*2 ? ( $a/60/60/24/7, 'week', 'weeks' ) :
$a > 60*60*24*2 ? ( $a/60/60/24, 'day', 'days' ) :
$a > 60*60*2 ? ( $a/60/60, 'hour', 'hours' ) :
$a > 60*2 ? ( $a/60, 'min', 'min' ) :
( $a, 'sec', 'sec' );
$t = sprintf '%d', $t;
sprintf '%d %s ago', $t, $t == 1 ? $single : $plural;
}
# argument: unix timestamp and optional format (compact/full)
sub fmtdate {
my($t, $f) = @_;
return strftime '%Y-%m-%d', localtime $t if !$f || $f eq 'compact';
return strftime '%Y-%m-%d at %R', localtime $t;
}
# Turn a (natural number) vote into a rating indication
sub fmtrating {
['worst ever',
'awful',
'bad',
'weak',
'so-so',
'decent',
'good',
'very good',
'excellent',
'masterpiece']->[shift()-1];
}
# Turn a spoiler level into a string
sub fmtspoil {
['neutral',
'no spoiler',
'minor spoiler',
'major spoiler']->[shift()+1];
}
sub fmtanimation {
my($a, $cat) = @_;
return if !defined $a;
return $cat ? ucfirst "$cat not animated" : 'Not animated' if !$a;
return $cat ? "No $cat" : 'Not applicable' if $a == 1;
($a & 256 ? 'Some scenes ' : $a & 512 ? 'All scenes ' : '').join('/',
$a & 4 ? 'Hand drawn' : (),
$a & 8 ? 'Vectorial' : (),
$a & 16 ? '3D' : (),
$a & 32 ? 'Live action' : ()
).($cat ? " $cat" : '');
}
# Format a release date as a string.
sub rdate {
my($y, $m, $d) = ($1, $2, $3) if sprintf('%08d', shift||0) =~ /^([0-9]{4})([0-9]{2})([0-9]{2})$/;
$y == 0 ? 'unknown' :
$y == 9999 ? 'TBA' :
$m == 99 ? sprintf('%04d', $y) :
$d == 99 ? sprintf('%04d-%02d', $y, $m) :
sprintf('%04d-%02d-%02d', $y, $m, $d);
}
# Given a language code & title, returns a (lang => $x) html property.
sub tlang {
my($lang, $title) = @_;
# TODO: The -Latn suffix is redundant for languages that use the Latin script by default, need to check with a list.
# English is the site's default, so no need to specify that.
$lang && $lang ne 'en'
? (lang => $lang . ($title =~ /[\x{0400}-\x{04ff}\x{0600}-\x{06ff}\x{0e00}-\x{0e7f}\x{1100}-\x{11ff}\x{1400}-\x{167f}\x{3040}-\x{3099}\x{30a1}-\x{30fa}\x{3100}-\x{9fff}\x{ac00}-\x{d7af}\x{ff66}-\x{ffdc}\x{20000}-\x{323af}]/ ? '' : '-Latn'))
: ();
}
# Given an SQL titles array, returns element attributes & content.
sub tattr {
my $title = ref $_[0] eq 'HASH' ? $_[0]{title} : $_[0];
(tlang($title->[0],$title->[1]), title => $title->[3], $title->[1])
}
# Encode query parameters. Takes a hash or hashref with key/values, supports array values and objects that implement query_encode().
sub query_encode {
my $o = @_ == 1 ? $_[0] : {@_};
return join '&', map {
my($k, $v) = ($_, $o->{$_});
$v = $v->query_encode() if ref $v && ref $v ne 'ARRAY';
!defined $v ? () : ref $v ? map "$k=".uri_escape($_), sort @$v : "$k=".uri_escape($v)
} sort keys %$o;
}
sub md2html {
require Text::MultiMarkdown;
my $html = Text::MultiMarkdown::markdown(shift, {
strip_metadata => 1,
img_ids => 0,
disable_footnotes => 1,
disable_bibliography => 1,
});
# Number sections and turn them into links
my($sec, $subsec) = (0,0);
$html =~ s{<h([1-2])[^>]+>(.*?)</h\1>}{
if($1 == 1) {
$sec++;
$subsec = 0;
qq{<h3><a href="#$sec" name="$sec">$sec. $2</a></h3>}
} elsif($1 == 2) {
$subsec++;
qq|<h4><a href="#$sec.$subsec" name="$sec.$subsec">$sec.$subsec. $2</a></h4>\n|
}
}ge;
# Text::MultiMarkdown doesn't handle fenced code blocks properly. The
# following solution breaks inline code blocks, but I don't use those anyway.
$html =~ s/<code>/<pre>/g;
$html =~ s#</code>#</pre>#g;
$html
}
sub is_insecurepass {
utf8::encode(local $_ = shift);
my $hash = sha1 $_;
my $dir = config->{var_path}.'/hibp';
return 0 if !-d $dir;
my $prefix = uc unpack 'H4', $hash;
my $data = substr $hash, 2, 10;
my $F;
if(!open $F, '<', "$dir/$prefix") {
warn "Unable to lookup password prefix $prefix: $!";
return 0;
}
# Plain old binary search.
# Would be nicer to search through an mmap'ed view of the file, or at least
# use pread(), but alas, neither are easily available in Perl.
my($left, $right) = (0, -10 + -s $F);
while($left <= $right) {
my $off = floor(($left+$right)/20)*10;
sysseek $F, $off, 0 or die $!;
10 == sysread $F, my $buf, 10 or die $!;
return 1 if $buf eq $data;
if($buf lt $data) { $left = $off + 10; }
else { $right = $off - 10; }
}
0;
}
1;
|