php计算 crc16 ccitt 校验码 海康workerman

@Ta 2022-12-08发布,2022-12-08修改 4227点击

workerman

<?php

namespace app\protocol;


use app\haikang\HaiKangPacket;

/**
 * 这里的crc16不是标准的,是他们自定的。很坑
 */
class HaikangProtocol implements InterfaceProtocol
{

    //报文头
    public const lengthPacketHeader = 2;

    //设备ID
    public const lengthDeviceId = 6;

    // 报文编号
    public const lengthPacketNum = 1;

    // 命令码
    public const lengthCommandType = 1;

    //命令码
    public const lengthDataLen = 2;

    public const lengthCrc16 = 2;

    /**
     * 不包含 lengthData lengthCrc16
     * 报文头    2    C6 E5 (棋的GB32的编码)
     * 设备ID    6    唯一标识设备ID的ASCII编码(一般为可见字符),设备可以使棋盘也可以是棋钟等其他设备。
     * 报文编号    1    当前报文的编号,用于处理网络传输可能出现的滞后现象,为递增值。如果是回复报文,则回复报文中的报文编号字段需和接收到报文编号一致。
     * 命令码    1    0-255,其中最高位如果是1,表示数据流向:后台服务器智能棋盘,最高位如果是0,表示数据流向:智能棋盘后台服务器。
     * 数据长度    2    0-65535,表示数据域的长度,不是整个报文的长度。
     * 数据域    N    根据命令码和数据长度确定
     * 校验码    2    CRC16,除校验码外所有报文内容的校验码,校验算法待定。
     */
    public const packetStructBase = [
        'H4lengthPacketHeader',//报文头	2
        'H12lengthDeviceId',//设备ID	6
        'H2lengthPacketNum', //报文编号	1
        'H2lengthCommandType',//命令码	1
        'nlengthDataLen',//数据长度	2  16位,0xff 代表长度
        'H*lengthData',//数据域	N
    ];

    /**
     * 检查包的完整性
     * 如果能够得到包长,则返回包的在buffer中的长度,否则返回0继续等待数据
     * 如果协议有问题,则可以返回false,当前客户端连接会因此断开
     * @param string $buffer
     * @return int
     */
    public static function input($buffer): int
    {
        $headerMinLength = self::lengthPacketHeader + self::lengthDeviceId + self::lengthPacketNum + self::lengthCommandType + self::lengthDataLen;
        if (\strlen($buffer) >= $headerMinLength) {
            print_r("[raw packet]: " . implode(' ', str_split(implode(unpack("H*", $buffer)), 2)) . PHP_EOL);
            //H 是0xf, H2才是0fxx 一个字节
            $unpackRule = \trim(\implode('/', self::packetStructBase), '/');
            $data = \unpack($unpackRule, $buffer);
            //[报文头-数据长度]+ [数据域] +校验码
            $packetLength = $headerMinLength + $data['lengthDataLen'] + self::lengthCrc16;
            if (self::crc16($buffer) === false) {
                echo '[wairing][wairing][wairing][wairing]';
                //协议都不对 ,你还想通过? 直接断开他的连接好吧
                return false;
            }

            return $packetLength;
        }
        return 0;
    }


    /**
     * @param string $buffer
     * @return string
     */
    public static function encode($buffer): string
    {
        $sendBuff = pack("N", strlen($buffer));
        $sendBuff .= $buffer;
        return $sendBuff;
    }

    /**
     * 解包,当接收到的数据字节数等于input返回的值(大于0的值)自动调用
     * 并传递给onMessage回调函数的$data参数
     * @param string $buffer
     * @return string
     */
    public static function decode($buffer): mixed
    {
        $unpackRule = \trim(\implode('/', self::packetStructBase), '/');
        $packetData = \unpack($unpackRule, $buffer);
        //[报文头-数据长度]+ [数据域] +校验码

        $data = [
            'PacketHeader' => $packetData['lengthPacketHeader'],//报文头	2
            'DeviceId' => $packetData['lengthDeviceId'],//设备ID	6
            'PacketNum' => $packetData['lengthPacketNum'], //报文编号	1
            'CommandType' => $packetData['lengthCommandType'],//命令码	1
            'DataLen' => $packetData['lengthDataLen'],//数据长度	2  16位,0xff 代表长度
            'Data' => $packetData['lengthPacketHeader'],//数据域	N
        ];
        $data['Crc16Ccitt'] = bin2hex(\substr($buffer, \strlen($buffer) - self::lengthCrc16, self::lengthCrc16));
        $data['Data'] = bin2hex(\substr($data['Data'], 0, \strlen($buffer) - self::lengthCrc16));
        return $data;
    }

    public static function crc16(string $buff): bool
    {
        $originCrc16Hex = bin2hex(\substr($buff, \strlen($buff) - 2, 2));
        $caculateBuff = \substr($buff, 0, \strlen($buff) - 2);
        $resultCrc16Hex = self::calc_crc16_ccitt_my($caculateBuff);
        return \dechex($resultCrc16Hex) == $originCrc16Hex;
    }


    public function CRC16Normal($buffer)
    {

        define('CRC16POLYN', 0x1021);

        $result = 0xFFFF;

        if (($length = strlen($buffer)) > 0) {

            for ($offset = 0; $offset < $length; $offset++) {

                $result ^= (ord($buffer[$offset]) << 8);

                for ($bitwise = 0; $bitwise < 8; $bitwise++) {

                    if (($result <<= 1) & 0x10000) $result ^= CRC16POLYN;

                    $result &= 0xFFFF;
                }

            }

        }
        return $result;
    }


    public static function calc_crc16_ccitt(string $buffer, $length = 0): string
    {

        $auchCRCHi = array(0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
            0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
            0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,
            0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
            0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
            0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,
            0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
            0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
            0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,
            0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,
            0x40);
        $auchCRCLo = array(0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4,
            0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
            0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD,
            0x1D, 0x1C, 0xDC, 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
            0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7,
            0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
            0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE,
            0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
            0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2,
            0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
            0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB,
            0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
            0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0, 0x50, 0x90, 0x91,
            0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
            0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88,
            0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
            0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80,
            0x40);
        $length = ($length <= 0 ? strlen($buffer) : $length);
        $uchCRCHi = 0xFF;
        $uchCRCLo = 0xFF;
        for ($i = 0; $i < $length; $i++) {
            $uIndex = $uchCRCLo ^ ord(substr($buffer, $i, 1));
            $uchCRCLo = $uchCRCHi ^ $auchCRCHi[$uIndex];
            $uchCRCHi = $auchCRCLo[$uIndex];
        }
        return (chr($uchCRCLo) . chr($uchCRCHi));
    }


    public static function calc_crc16_ccitt_my(string $buffer, $length = 0): string
    {

        $uint16_crc_256map = [
            0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
            0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
            0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
            0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
            0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
            0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
            0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
            0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
            0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
            0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
            0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
            0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
            0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
            0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
            0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
            0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
            0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
            0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
            0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
            0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
            0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
            0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
            0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
            0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
            0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
            0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
            0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
            0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
            0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
            0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
            0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
            0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
        ];

        $crc = 0xFFFF;
        $length = $length == 0 ? \strlen($buffer) : $length;
        for ($i = 0; $i < $length; $i++) {
            $crc = ($crc >> 8) ^ $uint16_crc_256map[($crc ^ \ord($buffer[$i])) & 0xFF];
        }
        return $crc;

        /**
         * // 计算crc16(ccitt标准)
         * uint16_t calc_crc16_ccitt(void *buf, size_t len)
         * {
         * const static uint16_t crc_table[256] =
         * {
         * 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
         * 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
         * 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
         * 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
         * 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
         * 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
         * 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
         * 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
         * 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
         * 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
         * 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
         * 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
         * 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
         * 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
         * 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
         * 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
         * 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
         * 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
         * 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
         * 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
         * 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
         * 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
         * 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
         * 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
         * 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
         * 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
         * 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
         * 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
         * 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
         * 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
         * 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
         * 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
         * };
         * uint8_t *p = (uint8_t*)buf;
         * uint16_t crc = 0xFFFF;
         * size_t i = 0;
         * for(; i < len; i++)
         * {
         * crc = (crc >> 8) ^ crc_table[(crc ^ p[i]) & 0xff];
         * }
         * return crc;
         * }
         */
    }
}
回复列表(2|隐藏机器人聊天)
添加新回复
回复需要登录