<?php

$server = stream_socket_server('tcp://127.0.0.1:0', $errorCode, $errorMessage);
if (! is_resource($server)) {
    fwrite(STDERR, 'Unable to bind local timeout fixture.');
    exit(1);
}

echo stream_socket_get_name($server, false)."\n";
fflush(STDOUT);
for ($request = 0; $request < 3; $request++) {
    $connection = @stream_socket_accept($server, 5);
    if (! is_resource($connection)) {
        break;
    }

    $command = stream_get_line($connection, 65536, "\0");
    if ($command === 'zPING') {
        fwrite($connection, "PONG\0");
        fclose($connection);

        continue;
    }
    if ($command === 'zVERSION') {
        fwrite($connection, 'ClamAV 1.5.4/999/'.gmdate('D M j H:i:s Y')."\0");
        fclose($connection);

        continue;
    }
    if ($command === 'zINSTREAM') {
        while (true) {
            $lengthBytes = '';
            while (strlen($lengthBytes) < 4) {
                $part = fread($connection, 4 - strlen($lengthBytes));
                if ($part === false || $part === '') {
                    break 2;
                }
                $lengthBytes .= $part;
            }
            $length = unpack('Nlength', $lengthBytes)['length'];
            if ($length === 0) {
                sleep(4);
                break;
            }
            $remaining = $length;
            while ($remaining > 0) {
                $part = fread($connection, min(65536, $remaining));
                if ($part === false || $part === '') {
                    break 3;
                }
                $remaining -= strlen($part);
            }
        }
        fclose($connection);
        break;
    }
    fclose($connection);
}
fclose($server);