package gatewayServer import ( "bytes" "encoding/binary" "encoding/hex" "fmt" "strings" ) type CmdCode uint16 /*设备->服务端：命令码0x4xxx开头； 服务端->设备：命令码0x8xxx开头； */ const ( CmdCodeServerC2S CmdCode = 0x4000 //获取管理服务器请求 CmdCodeServerS2C CmdCode = 0x8000 //获取管理服务器应答 CmdCodeRegisterC2S CmdCode = 0x4001 //设备注册登录请求 CmdCodeRegisterS2C CmdCode = 0x8001 //设备注册登陆应答 CmdCodeHeartbeatC2S CmdCode = 0x4002 //设备心跳请求 CmdCodeHeartbeatS2C CmdCode = 0x8002 //设备心跳应答 CmdCodeGetParamS2C CmdCode = 0x8003 //获取设备配置参数请求 CmdCodeGetParamC2S CmdCode = 0x4003 //获取设备配置参数应答 CmdCodeUpdateS2C CmdCode = 0x8101 //开始设备升级请求 CmdCodeUpdateC2S CmdCode = 0x4101 //设备升级应答 CmdCodeSetParameterS2C CmdCode = 0x8004 //配置设备参数请求 CmdCodeSetParameterC2S CmdCode = 0x4004 //配置设备参数应答 SubCodeWAN CmdCode = 0x0001 //WAN口参数配置 SubCodeLAN CmdCode = 0x0002 //LAN口参数配置 SubCodeWiFi CmdCode = 0x0003 //WiFi参数配置 SubCodeDetection CmdCode = 0x0004 //在线探测参数配置 SubCodePPTP CmdCode = 0x1001 //PPTP参数配置 SubCodeL2TP CmdCode = 0x1002 //L2TP参数配置 SubCodeSerialPort CmdCode = 0x2001 //串口应用配置 SubCodeFlowRate CmdCode = 0x2002 //流量统计配置 SubCodeInfo CmdCode = 0x3001 //系统基本信息配置 SubCodeTime CmdCode = 0x3002 //时间设置 SubCodeRecover CmdCode = 0x3003 //恢复出厂设置 SubCodeReboot CmdCode = 0x3004 //重启 SubCodePortTrans CmdCode = 0x5001 //端口转发 ) type AppDataUnit struct { Start []byte Length uint16 identification string CmdCode CmdCode SubCode CmdCode DevId string Data string CheckCode []byte } func (adu AppDataUnit) String() string { return fmt.Sprintf(` 报头标识:%s 数据长度:%X 包标识:%s 命令码:%4X 子命令码:%04X 设备ID:%s DATA:%s CRC:%X `, adu.Start, adu.Length, adu.identification, adu.CmdCode, adu.SubCode, adu.DevId, adu.Data, adu.CheckCode) } func (adu AppDataUnit) Debug() { if !openDebug { return } if adu.Start == nil { fmt.Println(UnPack(Pack(adu))) } else { fmt.Println(adu) } } func UnPack(data []byte) AppDataUnit { //todo 校验数据 var res = AppDataUnit{ Start: data[:2], Length: Bin2UInt16(data[2:4], binary.BigEndian), identification: hex.EncodeToString(data[4:36]), CmdCode: CmdCode(Bin2UInt16(data[36:38], binary.BigEndian)), SubCode: CmdCode(Bin2UInt16(data[38:40], binary.BigEndian)), DevId: strings.Trim(string(data[40:52]), string(byte(0))), CheckCode: data[len(data)-2:], } if res.Length-54 > 0 { res.Data = string(data[52 : len(data)-2]) } else { res.Data = "" } return res } func Pack(adu AppDataUnit) []byte { //devId不够12位补ascii空值 for i := 0; i < 12-len(adu.DevId); i++ { adu.DevId = adu.DevId + string(byte(0)) } var buf []byte writer := bytes.NewBuffer(buf) writer.Write([]byte("@@")) //起始 writer.Write(Uint16ToBin(uint16(54+len(adu.Data)), binary.BigEndian)) //长度 writer.Write([]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}) //包标识 writer.Write(Uint16ToBin(uint16(adu.CmdCode), binary.BigEndian)) //命令码 writer.Write(Uint16ToBin(uint16(adu.SubCode), binary.BigEndian)) //子命令码 writer.Write([]byte(adu.DevId)) //设备ID writer.Write([]byte(adu.Data)) //数据内容 writer.Write(CRC16(writer.Bytes(), len(writer.Bytes()))) //校验 return writer.Bytes() } func CRC16(data []byte, dataLen int) []byte { var uchCRCHi byte = 0xFF var uchCRCLo byte = 0xFF var uIndex uint16 for i := 0; i < int(dataLen); i++ { uIndex = uint16(uchCRCLo) ^ uint16(data[i]) uchCRCLo = uchCRCHi ^ auchCRCHi[uIndex] uchCRCHi = auchCRCLo[uIndex] } crc := (uint16(uchCRCHi) << 8) | uint16(uchCRCLo) return Uint16ToBin(crc, binary.BigEndian) } var auchCRCHi = []byte{ 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, } var auchCRCLo = []byte{ 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, }