#!/usr/bin/perl

use strict;

use warnings;

use Test::More;

use Socket;

use File::Spec;

use Net::SSLeay;

use Config;

# for debugging only

my $DEBUG = 0;

my $PCAP = 0;

require Net::PcapWriter if $PCAP;

plan skip_all => "no support for session_ticket_ext_cb"

    if ! defined &Net::SSLeay::set_session_ticket_ext_cb;

my $tests = 4;

plan tests => $tests;

Net::SSLeay::randomize();

Net::SSLeay::load_error_strings();

Net::SSLeay::ERR_load_crypto_strings();

Net::SSLeay::SSLeay_add_ssl_algorithms();

my $SSL_ERROR; # set in _minSSL

my %TRANSFER;  # set in _handshake

my $SESSION_TICKET = "\x01\x02\x03\x04\x05\x06\x07\x08\x09\xff";

my $SESSION_TICKET_CB_DATA = "dada";

my $set_session_ticket_ext_cb_run = 0;

my $client = _minSSL->new();

my $server = _minSSL->new( cert => [

    File::Spec->catfile('t','data','testcert_wildcard.crt.pem'),

    File::Spec->catfile('t','data','testcert_key_2048.pem')

]);

# now attach the ticket callback to server

# ----------------------------------------------

my $ticketcb = sub {

    my ($ssl, $ticket, $data) = @_;

    is(unpack('H*', $data), unpack('H*', $SESSION_TICKET_CB_DATA), 'server set callback data with set_session_ticket_ext_cb');

    is(unpack('H*', $ticket), unpack('H*', $SESSION_TICKET), 'client set session ticket with set_session_ticket_ext');

    $set_session_ticket_ext_cb_run = 1;

    return 1;

};

my $set_ticket_cb = sub {

    Net::SSLeay::set_session_ticket_ext_cb($server->_ssl, $ticketcb, $SESSION_TICKET_CB_DATA);

    Net::SSLeay::set_session_ticket_ext($client->_ssl, $SESSION_TICKET);

};

is( _handshake($client,$server,$set_ticket_cb),'full',"full handshake with a ticket");

ok($set_session_ticket_ext_cb_run == 1, 'server run a callback set with set_session_ticket_ext_cb');

my $i;

sub _handshake {

    my ($client,$server,$after_init) = @_;

    $client->state_connect;

    $server->state_accept;

    &$after_init if $after_init;

    my $pcap = $PCAP && do {

	my $fname = 'test'.(++$i).'.pcap';

	open(my $fh,'>',$fname);

	diag("pcap in $fname");

	$fh->autoflush;

	Net::PcapWriter->new($fh)->tcp_conn('1.1.1.1',1000,'2.2.2.2',443);

    };

    my ($client_done,$server_done,@hs);

    %TRANSFER = ();

    for(my $tries = 0; $tries < 10 and !$client_done || !$server_done; $tries++ ) {

	$client_done ||= $client->handshake || 0;

	$server_done ||= $server->handshake  || 0;

	my $transfer = 0;

	if (defined(my $data = $client->bio_read())) {

	    $pcap && $pcap->write(0,$data);

	    $DEBUG && warn "client -> server: ".length($data)." bytes\n";

	    $server->bio_write($data);

	    push @hs,'>';

	    $TRANSFER{client} += length($data);

	    $transfer++;

	}

	if (defined(my $data = $server->bio_read())) {

	    $pcap && $pcap->write(1,$data);

	    $DEBUG && warn "server -> client: ".length($data)." bytes\n";

	    $client->bio_write($data);

	    # assume certificate was sent if length>700

	    push @hs, length($data) > 700 ? '<[C]':'<';

	    $TRANSFER{server} += length($data);

	    $transfer++;

	}

	if (!$transfer) {

	    # no more data to transfer - assume we are done

	    $client_done = $server_done = 1;

	}

    }

    return

	!$client_done || !$server_done ? 'failed' :

	"@hs" eq '> <[C] > <' ? 'full' :

	"@hs" eq '> < >'   ? 'reuse' :

	"@hs";

}

{

    package _minSSL;

    sub new {

	my ($class,%args) = @_;

	my $ctx = Net::SSLeay::CTX_tlsv1_new();

	Net::SSLeay::CTX_set_options($ctx,Net::SSLeay::OP_ALL());

	Net::SSLeay::CTX_set_cipher_list($ctx,'AES128-SHA');

	my $id = 'client';

	if ($args{cert}) {

	    my ($cert,$key) = @{ delete $args{cert} };

	    Net::SSLeay::set_cert_and_key($ctx, $cert, $key)

		|| die "failed to use cert file $cert,$key";

	    $id = 'server';

	}

	my $self = bless { id => $id, ctx => $ctx }, $class;

	return $self;

    }

    sub state_accept {

	my $self = shift;

	_reset($self);

	Net::SSLeay::set_accept_state($self->{ssl});

    }

    sub state_connect {

	my $self = shift;

	_reset($self);

	Net::SSLeay::set_connect_state($self->{ssl});

    }

    sub handshake {

	my $self = shift;

	my $rv = Net::SSLeay::do_handshake($self->{ssl});

	$rv = _error($self,$rv);

	return $rv;

    }

    sub ssl_read {

	my ($self) = @_;

	my ($data,$rv) = Net::SSLeay::read($self->{ssl});

	return _error($self,$rv || -1) if !$rv || $rv<0;

	return $data;

    }

    sub bio_write {

	my ($self,$data) = @_;

	defined $data and $data ne '' or return;

	Net::SSLeay::BIO_write($self->{rbio},$data);

    }

    sub ssl_write {

	my ($self,$data) = @_;

	my $rv = Net::SSLeay::write($self->{ssl},$data);

	return _error($self,$rv || -1) if !$rv || $rv<0;

	return $rv;

    }

    sub bio_read {

	my ($self) = @_;

	return Net::SSLeay::BIO_read($self->{wbio});

    }

    sub _ssl { shift->{ssl} }

    sub _ctx { shift->{ctx} }

    sub _reset {

	my $self = shift;

	my $ssl = Net::SSLeay::new($self->{ctx});

	my @bio = (

	    Net::SSLeay::BIO_new(Net::SSLeay::BIO_s_mem()),

	    Net::SSLeay::BIO_new(Net::SSLeay::BIO_s_mem()),

	);

	Net::SSLeay::set_bio($ssl,$bio[0],$bio[1]);

	$self->{ssl} = $ssl;

	$self->{rbio} = $bio[0];

	$self->{wbio} = $bio[1];

    }

    sub _error {

	my ($self,$rv) = @_;

	if ($rv>0) {

	    $SSL_ERROR = undef;

	    return $rv;

	}

	my $err = Net::SSLeay::get_error($self->{ssl},$rv);

	if ($err == Net::SSLeay::ERROR_WANT_READ()

	    || $err == Net::SSLeay::ERROR_WANT_WRITE()) {

	    $SSL_ERROR = $err;

	    $DEBUG && warn "[$self->{id}] rw:$err\n";

	    return;

	}

	$DEBUG && warn "[$self->{id}] ".Net::SSLeay::ERR_error_string($err)."\n";

	return;

    }

}