File Coverage

blib/lib/AnyEvent/Whois/Raw.pm

Criterion	Covered	Total	%
statement	95	173	54.9
branch	23	52	44.2
condition	7	29	24.1
subroutine	18	26	69.2
pod	2	10	20.0
total	145	290	50.0

package AnyEvent::Whois::Raw;

use base 'Exporter';
use AnyEvent;
use AnyEvent::Socket;
use AnyEvent::Handle;
use AnyEvent::HTTP;
use strict;
no warnings 'redefine';

our $VERSION = '0.07';
our @EXPORT = qw(whois get_whois);
our $stash;

BEGIN {
	sub Net::Whois::Raw::smart_eval(&) {
		my @rv = eval {
			$_[0]->();
		};
		if ($@ && $@ =~ /^Call me later/) {
			die $@;
		}

		return @rv;
	}

	sub require_hook {
		my ($self, $fname) = @_;

		return if $fname ne 'Net/Whois/Raw.pm';
		for my $i (1..$#INC) {
			if (-e (my $tname = $INC[$i] . '/Net/Whois/Raw.pm')) {
				open(my $fh, $tname) or next;
				return ($fh, \&eval_filter);
			}
		}
		return;
	}

	sub eval_filter {
		return 0 if $_ eq '';
		s/\beval\s*{/smart_eval{/;
		return 1;
	}

	unshift @INC, \&require_hook;
	require Net::Whois::Raw;
}

sub _extract_known_params {
	my $args = shift;
	my %known_params = (
		timeout => 1,
		on_prepare => 1,
	);

	my %params;
	eval {
		for my $i (-2, -2) {
			if (exists($known_params{$args->[$i-1]})) {
				$params{$args->[$i-1]} = $args->[$i];
				delete $known_params{$args->[$i-1]};
				splice @$args, $i-1, 2;
			}
			else {
				last;
			}
		}
	};

	return \%params;
}

sub whois {
	local $stash = {
		caller => \&_whois,
		params => _extract_known_params(\@_),
		args => [@_],
	};

	&_whois;
}

sub _whois {
	my $cb = pop;

	my ($res_text, $res_srv);
	eval {
		($res_text, $res_srv) = Net::Whois::Raw::whois(@_);
	};
	if (!$@) {
		$cb->($res_text, $res_srv);
	}
	elsif ($@ !~ /^Call me later/) {
		$cb->('', $@);
	}
}

sub get_whois {
	local $stash = {
		caller => \&_get_whois,
		params => _extract_known_params(\@_),
		args => [@_],
	};

	&_get_whois;
}

sub _get_whois {
	my $cb = pop;

	my ($res_text, $res_srv);
	eval {
		($res_text, $res_srv) = Net::Whois::Raw::get_whois(@_);
	};
	if (!$@) {
		$cb->($res_text, $res_srv);
	}
	elsif ($@ !~ /^Call me later/) {
		$cb->('', $@);
	}
}

sub Net::Whois::Raw::whois_query {
	my $call = $stash->{calls}{whois_query}++;
	if ($call <= $#{$stash->{results}{whois_query}}) {
		return $stash->{results}{whois_query}[$call];
	}

	whois_query_ae(@_);
	die "Call me later";
}

sub whois_query_ae {
	my ($dom, $srv_and_port, $is_ns) = @_;


	my $whoisquery = Net::Whois::Raw::Common::get_real_whois_query($dom, $srv_and_port, $is_ns);
	my $stash_ref = $stash;

	my ($srv, $port) = split /:/, $srv_and_port;

	tcp_connect $srv, $port || 43, sub {
		my $fh = shift;
		unless ($fh) {
			$stash_ref->{args}->[-1]->('', "Connection to $srv failed: $!");
			return;
		}

		my @lines;
		my $handle;
		my $timer = AnyEvent->timer(
			after => exists $stash_ref->{params}{timeout} ?
					$stash_ref->{params}{timeout} :
					$Net::Whois::Raw::TIMEOUT||30,
			cb => sub {
				if ($handle && !$handle->destroyed) {
					$handle->destroy();
					$stash_ref->{args}->[-1]->('', "Connection to $srv timed out");
				}
			}
		);
		$handle = AnyEvent::Handle->new(
			fh => $fh,
			on_read => sub {
				my @l = split /(?<=\n)/, $_[0]->{rbuf};
				if (@lines && substr($lines[-1], -1) ne "\n") {
					$lines[-1] .= shift(@l);
				}
				push @lines, @l;
				$_[0]->{rbuf} = '';
			},
			on_error => sub {
				undef $timer;
				$handle->destroy();
				$stash_ref->{args}->[-1]->('', "Read error from $srv: $!");
			},
			on_eof => sub {
				undef $timer;
				local $stash = $stash_ref;
				$handle->destroy();
				$stash->{calls}{whois_query} = 0;
				push @{$stash->{results}{whois_query}}, \@lines;
				$stash->{caller}->(@{$stash->{args}});
			}
		);

		$handle->push_write($whoisquery."\015\012");
	}, sub {
		my $fh = shift;
		local $stash = $stash_ref;
		_sock_prepare_cb($fh, $srv);
	};
}

sub _sock_prepare_cb {
	my ($fh, $srv) = @_;

	my $sockname = getsockname($fh);
	my $timeout = $Net::Whois::Raw::TIMEOUT||30;

	if (exists $stash->{params}{on_prepare}) {
		$timeout = $stash->{params}{on_prepare}->($fh);
	}

	my $rotate_reference = eval { Net::Whois::Raw::get_ips_for_query($srv) };

	if (!$rotate_reference && @Net::Whois::Raw::SRC_IPS && $sockname eq getsockname($fh)) {
		# we have ip and there was no bind request in on_prepare callback
		$rotate_reference = \@Net::Whois::Raw::SRC_IPS;
	}

	if ($rotate_reference) {
		my $ip = shift @$rotate_reference;
		bind $fh, AnyEvent::Socket::pack_sockaddr(0, parse_address($ip));
		push @$rotate_reference, $ip; # rotate ips
	}

	return exists $stash->{params}{timeout} ?
		$stash->{params}{timeout} :
		$timeout;
}

sub Net::Whois::Raw::www_whois_query {
	my $call = $stash->{calls}{www_whois_query}++;
	if ($call <= $#{$stash->{results}{www_whois_query}}) {
		return $stash->{results}{www_whois_query}[$call];
	}

	www_whois_query_ae(@_);
	die "Call me later";
}

sub www_whois_query_ae {
	my ($dom) = (lc shift);

	my ($resp, $url);
	my ($name, $tld) = Net::Whois::Raw::Common::split_domain( $dom );
	my @http_query_urls = @{Net::Whois::Raw::Common::get_http_query_url($dom)};

	www_whois_query_ae_request(\@http_query_urls, $tld, $dom);
}

sub www_whois_query_ae_request {
	my ($urls, $tld, $dom) = @_;

	my $qurl = shift @$urls;
	unless ($qurl) {
		push @{$stash->{results}{www_whois_query}}, undef;
		$stash->{calls}{www_whois_query} = 0;
		$stash->{caller}->(@{$stash->{args}});
		return;
	}

	my $referer = delete $qurl->{form}{referer} if $qurl->{form} && defined $qurl->{form}{referer};
	my $method = ( $qurl->{form} && scalar(keys %{$qurl->{form}}) ) ? 'POST' : 'GET';
	my $stash_ref = $stash;

	my $cb = sub {
		my ($resp, $headers) = @_;
		local $stash = $stash_ref;

		if (!$resp || $headers->{Status} > 299) {
			www_whois_query_ae_request($urls, $tld, $dom);
		}
		else {
			chomp $resp;
			$resp = Net::Whois::Raw::Common::parse_www_content($resp, $tld, $qurl->{url}, $Net::Whois::Raw::CHECK_EXCEED);
			push @{$stash->{results}{www_whois_query}}, $resp;
			$stash->{calls}{www_whois_query} = 0;
			$stash->{caller}->(@{$stash->{args}});
		}
	};

	my $headers = {Referer => $referer};
	my @params;
	push @params, on_prepare => sub {
		my $fh = shift;
		local $stash = $stash_ref;
		_sock_prepare_cb($fh, 'www_whois');
	};

	if (exists $stash->{params}{timeout}) {
		push @params, timeout => $stash->{params}{timeout};
	}

	if ($method eq 'POST') {
		require URI::URL;

		my $curl = URI::URL->new("http:");
		$curl->query_form( %{$qurl->{form}} );
		http_post $qurl->{url}, $curl->equery, headers => $headers, @params, $cb;
	}
	else {
		http_get $qurl->{url}, headers => $headers,  @params, $cb;
	}
}

1;

__END__