/usr/share/perl5/Plack/Middleware/AccessLog.pm is in libplack-perl 0.9985-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | package Plack::Middleware::AccessLog;
use strict;
use warnings;
use parent qw( Plack::Middleware );
use Plack::Util::Accessor qw( logger format );
use Carp ();
use Plack::Util;
my %formats = (
common => "%h %l %u %t \"%r\" %>s %b",
combined => "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\"",
);
use POSIX ();
sub call {
my $self = shift;
my($env) = @_;
my $res = $self->app->($env);
return $self->response_cb($res, sub {
my $res = shift;
my $logger = $self->logger || sub { $env->{'psgi.errors'}->print(@_) };
my $content_length = Plack::Util::content_length($res->[2]);
$logger->( $self->log_line($res->[0], $res->[1], $env, { content_length => $content_length }) );
});
}
sub log_line {
my($self, $status, $headers, $env, $opts) = @_;
my $h = Plack::Util::headers($headers);
my $strftime = sub {
my $old_locale = POSIX::setlocale(&POSIX::LC_ALL);
POSIX::setlocale(&POSIX::LC_ALL, 'en');
my $out = POSIX::strftime(@_);
POSIX::setlocale(&POSIX::LC_ALL, $old_locale);
return $out;
};
my $block_handler = sub {
my($block, $type) = @_;
if ($type eq 'i') {
$block =~ s/-/_/g;
my $val = _safe($env->{"HTTP_" . uc($block)});
return defined $val ? $val : "-";
} elsif ($type eq 'o') {
return scalar $h->get($block) || "-";
} elsif ($type eq 't') {
return "[" . $strftime->($block, localtime) . "]";
} else {
Carp::carp("{$block}$type not supported");
return "-";
}
};
my %char_handler = (
'%' => sub { '%' },
h => sub { $env->{REMOTE_ADDR} || '-' },
l => sub { '-' },
u => sub { $env->{REMOTE_USER} || '-' },
t => sub { "[" . $strftime->("%d/%b/%Y:%H:%M:%S %z", localtime) . "]" },
r => sub { _safe($env->{REQUEST_METHOD}) . " " . _safe($env->{REQUEST_URI}) .
" " . $env->{SERVER_PROTOCOL} },
s => sub { $status },
b => sub { $opts->{content_length} || $h->get('Content-Length') || "-" },
T => sub { $opts->{time} ? int($opts->{time}) : "-" },
D => sub { $opts->{time} ? $opts->{time} * 1000000 : "-" },
v => sub { $env->{SERVER_NAME} || '-' },
V => sub { $env->{HTTP_HOST} || $env->{SERVER_NAME} || '-' },
);
my $char_handler = sub {
my $char = shift;
my $cb = $char_handler{$char};
unless ($cb) {
Carp::carp "\%$char not supported.";
return "-";
}
$cb->($char);
};
my $fmt = $self->format || "combined";
$fmt = $formats{$fmt} if exists $formats{$fmt};
$fmt =~ s{
(?:
\%\{(.+?)\}([a-z]) |
\%(?:[<>])?([a-zA-Z\%])
)
}{ $1 ? $block_handler->($1, $2) : $char_handler->($3) }egx;
return $fmt . "\n";
}
sub _safe {
my $string = shift;
$string =~ s/([^[:print:]])/"\\x" . unpack("H*", $1)/eg
if defined $string;
$string;
}
__END__
=for stopwords
LogFormat
=head1 NAME
Plack::Middleware::AccessLog - Logs requests like Apache's log format
=head1 SYNOPSIS
# in app.psgi
use Plack::Builder;
builder {
enable "Plack::Middleware::AccessLog", format => "combined";
$app;
};
=head1 DESCRIPTION
Plack::Middleware::AccessLog forwards the request to the given app and
logs request and response details to the logger callback. The format
can be specified using Apache-like format strings (or C<combined> or
C<common> for the default formats). If none is specified C<combined> is
used.
This middleware uses calculable content-length by checking body type,
and can not log the time taken to serve requests. It also logs the
request B<before> the response is actually sent to the client. Use
L<Plack::Middleware::AccessLog::Timed> if you want to log details
B<after> the response is transmitted (more like a real web server) to
the client.
This middleware is enabled by default when you run L<plackup> as a
default C<development> environment.
=head1 CONFIGURATION
=over 4
=item format
enable "Plack::Middleware::AccessLog",
format => "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\"";
Takes a format string (or a preset template C<combined> or C<custom>)
to specify the log format. This middleware implements subset of
Apache's LogFormat templates.
=item logger
my $logger = Log::Dispatch->new(...);
enable "Plack::Middleware::AccessLog",
logger => sub { $logger->log(debug => @_) };
Sets a callback to print log message to. It prints to C<psgi.errors>
output stream by default.
=back
=head1 SEE ALSO
L<http://httpd.apache.org/docs/2.2/mod/mod_log_config.html> Rack::CustomLogger
=cut
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