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[修改]北京12号线连锁rsd、sse、ssr编解码算法

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thesai 2024-07-17 15:44:47 +08:00
parent 2fa2e90d57
commit ccaf53ec67
4 changed files with 262 additions and 397 deletions
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42
config/config.go
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@ -176,23 +176,31 @@ type RsspAxleConfig struct {
// RsspNetConfig 计轴通信配置 // RsspNetConfig 计轴通信配置
type RsspNetConfig struct { type RsspNetConfig struct {
RemoteIp string `json:"remoteIp" description:"远端IP"` RemoteIp string `json:"remoteIp" description:"远端IP"`
RemotePort int `json:"remotePort" description:"远端端口"` RemotePort int `json:"remotePort" description:"远端端口"`
LocalIp string `json:"localIp" description:"本地IP"` LocalPort int `json:"localPort" description:"本地端口"`
LocalPort int `json:"localPort" description:"本地端口"`
RemoteAddr string `json:"sourceAddr" description:"联锁地址（16进制，2字节）"` RemoteAddr string `json:"sourceAddr" description:"联锁地址（16进制，2字节）"`
LocalAddr string `json:"targetAddr" description:"计轴地址（16进制，2字节）"` LocalAddr string `json:"targetAddr" description:"计轴地址（16进制，2字节）"`
Sid1 string `json:"sid1" description:"联锁SID_1（16进制，4字节）"`
Sid2 string `json:"sid2" description:"联锁SID_2（16进制，4字节）"` RemoteSid1 string `json:"remoteSid1" description:"联锁SID_1（16进制，4字节）"`
LocalSid1 string `json:"remoteSid" description:"计轴SID_1（16进制，4字节）"` RemoteSid2 string `json:"remoteSid2" description:"联锁SID_2（16进制，4字节）"`
LocalSid2 string `json:"remoteSid2" description:"计轴SID_2（16进制，4字节）"` LocalSid1 string `json:"localSid1" description:"计轴SID_1（16进制，4字节）"`
Sinit1 string `json:"sinit1" description:"SINIT_1（16进制，4字节）"` LocalSid2 string `json:"localSid2" description:"计轴SID_2（16进制，4字节）"`
Sinit2 string `json:"sinit2" description:"SINIT_2（16进制，4字节）"`
DataVer1 string `json:"dataVer1" description:"DATAVER_1（16进制，4字节）"` RemoteSinit1 string `json:"remoteSinit1" description:"联锁SINIT_1（16进制，4字节）"`
DataVer2 string `json:"dataVer2" description:"DATAVER_2（16进制，4字节）"` RemoteSinit2 string `json:"remoteSinit2" description:"联锁SINIT_2（16进制，4字节）"`
MaxDeviation int `json:"maxDeviation" description:"可容忍的最大时序偏差"` LocalSinit1 string `json:"localSinit1" description:"计轴SINIT_1（16进制，4字节）"`
WaitSSRTimeout int `json:"waitSSRTimeout" description:"等待SSR回应的定时器超时值（ms）"` LocalSinit2 string `json:"localSinit2" description:"计轴SINIT_2（16进制，4字节）"`
Period int `json:"period" description:"RSD发送周期（ms）"`
RemoteDataVer1 string `json:"remoteDataVer1" description:"联锁DATAVER_1（16进制，4字节）"`
RemoteDataVer2 string `json:"remoteDataVer2" description:"联锁DATAVER_2（16进制，4字节）"`
LocalDataVer1 string `json:"localDataVer1" description:"计轴DATAVER_1（16进制，4字节）"`
LocalDataVer2 string `json:"localDataVer2" description:"计轴DATAVER_2（16进制，4字节）"`
MaxDeviation int `json:"maxDeviation" description:"可容忍的最大时序偏差"`
WaitSSRTimeout int `json:"waitSSRTimeout" description:"等待SSR回应的定时器超时值（ms）"`
Period int `json:"period" description:"RSD发送周期（ms）"`
} }
/////////////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////////////

394
third_party/axle_device/beijing12/service.go vendored
View File

@ -38,24 +38,30 @@ type serviceContext struct {
cancelFunc context.CancelFunc cancelFunc context.CancelFunc
ciSectionIndexConfigs []*proto.CiSectionCodePoint ciSectionIndexConfigs []*proto.CiSectionCodePoint
remoteAddr uint16 //联锁地址 从配置中的16进制字符串转来的 remoteAddr uint16 //联锁地址 从配置中的16进制字符串转来的
localAddr uint16 //计轴地址 从配置中的16进制字符串转来的 localAddr uint16 //计轴地址 从配置中的16进制字符串转来的
sid1 uint32 //联锁SID1 从配置中的16进制字符串转来的 remoteSid1 uint32 //联锁SID1 从配置中的16进制字符串转来的
sid2 uint32 //联锁SID2 从配置中的16进制字符串转来的 remoteSid2 uint32 //联锁SID2 从配置中的16进制字符串转来的
localSid1 uint32 //计轴SID1 从配置中的16进制字符串转来的 localSid1 uint32 //计轴SID1 从配置中的16进制字符串转来的
localSid2 uint32 //计轴SID2 从配置中的16进制字符串转来的 localSid2 uint32 //计轴SID2 从配置中的16进制字符串转来的
sinit1 uint32 //SINT16 从配置中的16进制字符串转来的 remoteSinit1 uint32 //联锁SINIT1 从配置中的16进制字符串转来的
sinit2 uint32 //SINT26 从配置中的16进制字符串转来的 remoteSinit2 uint32 //联锁SINIT2 从配置中的16进制字符串转来的
dataver1 uint32 //DATAVER1 从配置中的16进制字符串转来的 localSinit1 uint32 //计轴SINT1 从配置中的16进制字符串转来的
dataver2 uint32 //DATAVER2 从配置中的16进制字符串转来的 localSinit2 uint32 //计轴SINT2 从配置中的16进制字符串转来的
msgChan <-chan []byte //消息队列 remoteDataVer1 uint32 //联锁DATAVER1 从配置中的16进制字符串转来的
seqNum uint32 //当前的序列号 remoteDataVer2 uint32 //联锁DATAVER2 从配置中的16进制字符串转来的
lastSeqParam1 uint32 //最近一次的有效时序参数 sid1^t1(n) localDataVer1 uint32 //计轴DATAVER1 从配置中的16进制字符串转来的
lastSeqParam2 uint32 //最近一次的有效时序参数 sid2^t2(n) localDataVer2 uint32 //计轴DATAVER2 从配置中的16进制字符串转来的
lfsr1 *lfsr //用来计算时间戳的lfsr msgChan <-chan []byte //消息队列
lfsr2 *lfsr //用来计算时间戳的lfsr seqNum uint32 //当前的序列号
sseMsg *msg.SseMsg //发送出去的时序校验请求 lastSeqParam1 uint32 //最近一次的有效时序参数 remoteSinit1~+[remoteSid1^t1(n)]
sseWaitTimer <-chan time.Time //sse超时定时器 lastSeqParam2 uint32 //最近一次的有效时序参数 remoteSinit2~+[remoteSid2^t2(n)]
lfsr1 *lfsr //用来计算时间戳的lfsr
lfsr2 *lfsr //用来计算时间戳的lfsr
sseMsg *msg.SseMsg //发送出去的时序校验请求
sseWaitTimer <-chan time.Time //sse超时定时器
precSinit1 uint32 // 用来从SSR消息的SeqInit中提取时序参数
precSinit2 uint32 // 用来从SSR消息的SeqInit中提取时序参数
} }
func Start(simulation *memory.VerifySimulation) { func Start(simulation *memory.VerifySimulation) {
@ -81,73 +87,18 @@ func Start(simulation *memory.VerifySimulation) {
logger().Warn(fmt.Sprintf("集中站[%s]无区段编码数据，服务不启动", rsspConfig.StationCode)) logger().Warn(fmt.Sprintf("集中站[%s]无区段编码数据，服务不启动", rsspConfig.StationCode))
return return
} }
sourceAddr, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteAddr, 16, 16) //初始化服务上下文
if err != nil { serviceCtx := initServiceContext(rsspConfig, ref, simulation)
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析源地址[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteAddr))) //准备启动服务
}
targetAddr, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalAddr, 16, 16)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析目的地址[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalAddr)))
}
sid1, err := strconv.ParseUint(rsspConfig.NetAConfig.Sid1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁SID1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.Sid1)))
}
sid2, err := strconv.ParseUint(rsspConfig.NetAConfig.Sid2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁SID2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.Sid2)))
}
localSid1, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalSid1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴SID1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalSid1)))
}
localSid2, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalSid2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴SID2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalSid2)))
}
sinit1, err := strconv.ParseUint(rsspConfig.NetAConfig.Sinit1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析SINT1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.Sinit1)))
}
sinit2, err := strconv.ParseUint(rsspConfig.NetAConfig.Sinit2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析SINT2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.Sinit2)))
}
dataver1, err := strconv.ParseUint(rsspConfig.NetAConfig.DataVer1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析DATAVER_1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.DataVer1)))
}
dataver2, err := strconv.ParseUint(rsspConfig.NetAConfig.DataVer2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析DATAVER_2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.DataVer2)))
}
//服务初始化及启动
msgChan := make(chan []byte, 100) msgChan := make(chan []byte, 100)
serviceCtx := &serviceContext{ serviceCtx.msgChan = msgChan
sim: simulation,
config: rsspConfig,
ciSectionIndexConfigs: ref.SectionCodePoints,
remoteAddr: uint16(sourceAddr),
localAddr: uint16(targetAddr),
sid1: uint32(sid1),
sid2: uint32(sid2),
localSid1: uint32(localSid1),
localSid2: uint32(localSid2),
sinit1: uint32(sinit1),
sinit2: uint32(sinit2),
dataver1: uint32(dataver1),
dataver2: uint32(dataver2),
msgChan: msgChan,
lfsr1: &lfsr{value: uint32(localSid1), poly: msg.T_POLY_1},
lfsr2: &lfsr{value: uint32(localSid2), poly: msg.T_POLY_2},
}
netAConfig := rsspConfig.NetAConfig netAConfig := rsspConfig.NetAConfig
server := udp.NewServer(fmt.Sprintf("%s:%d", netAConfig.LocalIp, netAConfig.LocalPort), func(b []byte) { server := udp.NewServer(fmt.Sprintf(":%d", netAConfig.LocalPort), func(b []byte) {
logger().Info(fmt.Sprintf("收到数据：%x", b)) logger().Info(fmt.Sprintf("收到数据：%x", b))
msgChan <- b msgChan <- b
}) })
client := udp.NewClient(fmt.Sprintf("%s:%d", netAConfig.RemoteIp, netAConfig.RemotePort)) client := udp.NewClient(fmt.Sprintf("%s:%d", netAConfig.RemoteIp, netAConfig.RemotePort))
err = server.Listen() err := server.Listen()
if err != nil { if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]服务启动失败", logTag, rsspConfig.StationCode))) panic(sys_error.New(fmt.Sprintf("%s集中站[%s]服务启动失败", logTag, rsspConfig.StationCode)))
} else { } else {
@ -160,13 +111,103 @@ func Start(simulation *memory.VerifySimulation) {
serviceCtx.runCollectTask(cancelCtx) serviceCtx.runCollectTask(cancelCtx)
serviceCtx.runHandleMsgTask(cancelCtx) serviceCtx.runHandleMsgTask(cancelCtx)
contextMap[rsspConfig.StationCode] = serviceCtx contextMap[rsspConfig.StationCode] = serviceCtx
}
////sse测试，测完删除 func initServiceContext(rsspConfig config.RsspAxleConfig, ref *proto.CentralizedStationRef, simulation *memory.VerifySimulation) *serviceContext {
//time.Sleep(1 * time.Second) sourceAddr, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteAddr, 16, 16)
//serviceCtx.seqNum++ if err != nil {
//serviceCtx.lfsr1.add(0) panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析源地址[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteAddr)))
//serviceCtx.lfsr2.add(0) }
//serviceCtx.startSeeProgress() targetAddr, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalAddr, 16, 16)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析目的地址[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalAddr)))
}
remoteSid1, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteSid1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁SID1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteSid1)))
}
remoteSid2, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteSid2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁SID2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteSid2)))
}
localSid1, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalSid1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴SID1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalSid1)))
}
localSid2, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalSid2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴SID2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalSid2)))
}
remoteSinit1, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteSinit1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁SINT1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteSinit1)))
}
remoteSinit2, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteSinit2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁SINT2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteSinit2)))
}
localSinit1, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalSinit1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴SINT1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalSinit1)))
}
localSinit2, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalSinit2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴SINT2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalSinit2)))
}
remoteDataVer1, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteDataVer1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁DATAVER_1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteDataVer1)))
}
remoteDataVer2, err := strconv.ParseUint(rsspConfig.NetAConfig.RemoteDataVer2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析联锁DATAVER_2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.RemoteDataVer2)))
}
localDataVer1, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalDataVer1, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴DATAVER_1[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalDataVer1)))
}
localDataVer2, err := strconv.ParseUint(rsspConfig.NetAConfig.LocalDataVer2, 16, 32)
if err != nil {
panic(sys_error.New(fmt.Sprintf("%s集中站[%s]解析计轴DATAVER_2[%s]出错", logTag, rsspConfig.StationCode, rsspConfig.NetAConfig.LocalDataVer2)))
}
//服务初始化及启动
serviceCtx := &serviceContext{
sim: simulation,
config: rsspConfig,
ciSectionIndexConfigs: ref.SectionCodePoints,
remoteAddr: uint16(sourceAddr),
localAddr: uint16(targetAddr),
remoteSid1: uint32(remoteSid1),
remoteSid2: uint32(remoteSid2),
localSid1: uint32(localSid1),
localSid2: uint32(localSid2),
remoteSinit1: uint32(remoteSinit1),
remoteSinit2: uint32(remoteSinit2),
localSinit1: uint32(localSinit1),
localSinit2: uint32(localSinit2),
remoteDataVer1: uint32(remoteDataVer1),
remoteDataVer2: uint32(remoteDataVer2),
localDataVer1: uint32(localDataVer1),
localDataVer2: uint32(localDataVer2),
lfsr1: &lfsr{value: uint32(localSid1), poly: msg.T_POLY_1},
lfsr2: &lfsr{value: uint32(localSid2), poly: msg.T_POLY_2},
precSinit1: calculatePrecSinit(uint32(remoteSinit1), uint32(localSid1), uint32(remoteDataVer1)),
precSinit2: calculatePrecSinit(uint32(remoteSinit2), uint32(localSid2), uint32(remoteDataVer2)),
}
return serviceCtx
}
func calculatePrecSinit(remoteSinit uint32, localSid uint32, remoteDataVer uint32) uint32 {
l1 := lfsr{value: remoteSinit, poly: msg.T_POLY_1}
l1.add(localSid ^ remoteDataVer)
valueTmp := l1.value
l1.load(0).post(valueTmp)
return l1.value
} }
func Stop(simulation *memory.VerifySimulation) { func Stop(simulation *memory.VerifySimulation) {
@ -217,6 +258,56 @@ func (s *serviceContext) runCollectTask(ctx context.Context) {
}() }()
} }
func (s *serviceContext) collect() *msg.RsdMsgBuilder {
worldData := entity.GetWorldData(s.sim.World)
amdEntry := entity.FindAxleManageDevice(worldData, s.config.StationCode)
amd := component.AxleManageDeviceType.Get(amdEntry)
stateInfos := msg.StateInfos{}
for _, cfg := range s.ciSectionIndexConfigs {
sectionRuntime := amd.Adrs[cfg.SectionId]
sectionEntry, ok := entity.GetEntityByUid(s.sim.World, cfg.SectionId)
sectionState := component.PhysicalSectionStateType.Get(sectionEntry)
if !ok {
continue
}
stateInfos = append(stateInfos, &msg.StateInfo{
CLR: !sectionState.Occ,
OCC: sectionState.Occ,
RAC: sectionRuntime.Rac,
RJO: sectionRuntime.Rjo,
RJT: sectionRuntime.Rjt,
})
}
userData := []byte{0x00} //检查字节
userData = append(userData, stateInfos.Encode()...)
//更新序列号及时间戳
s.seqNum++
s.lfsr1.add(0)
s.lfsr2.add(0)
//构建消息
builder := &msg.RsdMsgBuilder{
MsgHeader: msg.MsgHeader{
ProtocolType: msg.ProtocolType_Sync,
MessageType: msg.MessageType_B, //从抓包数据里看到的
SourceAddr: s.localAddr,
TargetAddr: s.remoteAddr,
},
SeqNum: s.seqNum,
Svc1: s.calculateSvc1(userData),
Svc2: s.calculateSvc2(userData),
UserData: userData,
}
return builder
}
func (s *serviceContext) calculateSvc1(userData []byte) uint32 {
return message.Rssp_I_Crc32C1(userData) ^ s.localSid1 ^ s.lfsr1.value ^ msg.SCW_1
}
func (s *serviceContext) calculateSvc2(userData []byte) uint32 {
return message.Rssp_I_Crc32C2(userData) ^ s.localSid2 ^ s.lfsr2.value ^ msg.SCW_2
}
func (s *serviceContext) runHandleMsgTask(ctx context.Context) { func (s *serviceContext) runHandleMsgTask(ctx context.Context) {
go func() { go func() {
defer func() { defer func() {
@ -248,58 +339,8 @@ func (s *serviceContext) runHandleMsgTask(ctx context.Context) {
}() }()
} }
func (s *serviceContext) collect() *msg.RsdMsgBuilder {
worldData := entity.GetWorldData(s.sim.World)
amdEntry := entity.FindAxleManageDevice(worldData, s.config.StationCode)
amd := component.AxleManageDeviceType.Get(amdEntry)
stateInfos := msg.StateInfos{}
for _, cfg := range s.ciSectionIndexConfigs {
sectionRuntime := amd.Adrs[cfg.SectionId]
sectionEntry, ok := entity.GetEntityByUid(s.sim.World, cfg.SectionId)
sectionState := component.PhysicalSectionStateType.Get(sectionEntry)
if !ok {
continue
}
stateInfos = append(stateInfos, &msg.StateInfo{
CLR: !sectionState.Occ,
OCC: sectionState.Occ,
RAC: sectionRuntime.Rac,
RJO: sectionRuntime.Rjo,
RJT: sectionRuntime.Rjt,
})
}
userData := []byte{0x00} //检查字节
userData = append(userData, stateInfos.Encode()...)
//更新序列号及时间戳
s.seqNum++
s.lfsr1.add(0)
s.lfsr2.add(0)
//构建消息
builder := &msg.RsdMsgBuilder{
MsgHeader: msg.MsgHeader{
ProtocolType: msg.ProtocolType_Sync,
MessageType: msg.MessageType_A,
SourceAddr: s.localAddr,
TargetAddr: s.remoteAddr,
},
SeqNum: s.seqNum,
Svc1: s.calculateSvc1(userData),
Svc2: s.calculateSvc2(userData),
UserData: userData,
}
return builder
}
func (s *serviceContext) calculateSvc1(userData []byte) uint32 {
return message.Rssp_I_Crc32C1(userData) ^ s.localSid1 ^ s.lfsr1.value ^ msg.SCW_1
}
func (s *serviceContext) calculateSvc2(userData []byte) uint32 {
return message.Rssp_I_Crc32C2(userData) ^ s.localSid2 ^ s.lfsr2.value ^ msg.SCW_2
}
func (s *serviceContext) handleRsdMsg(data []byte) { func (s *serviceContext) handleRsdMsg(data []byte) {
if s.sseMsg == nil { //正在时序校正过程中 if s.sseMsg != nil { //正在时序校正过程中
return return
} }
rsdMsg := &msg.RsdMsg{} rsdMsg := &msg.RsdMsg{}
@ -309,12 +350,13 @@ func (s *serviceContext) handleRsdMsg(data []byte) {
return return
} }
//校验 //校验
validateResult := s.validateRsdMsg(rsdMsg) validateResult := s.validateRsdMsg(rsdMsg, data)
if validateResult == 0 { if validateResult == 0 {
return return
} else if validateResult == 2 { } else if validateResult == 2 {
//开启时序校正流程 //开启时序校正流程
logger().Error("时序校验失败，开始时序校正") logger().Error("时序校验失败，开始时序校正")
s.startSeeProgress()
return return
} }
//流程处理 //流程处理
@ -350,19 +392,19 @@ func (s *serviceContext) handleSseMsg(data []byte) {
logger().Error("SSE数据校验失败") logger().Error("SSE数据校验失败")
return return
} }
logger().Info("SSE数据通过校验") logger().Info(fmt.Sprintf("SSE数据通过校验：%x", data))
//回复 //回复
ssrMsg := msg.SsrMsg{ ssrMsg := msg.SsrMsg{
MsgHeader: msg.MsgHeader{ MsgHeader: msg.MsgHeader{
ProtocolType: msg.ProtocolType_Sync, ProtocolType: msg.ProtocolType_Sync,
MessageType: msg.MessageType_SSR, MessageType: msg.MessageType_SSR,
SourceAddr: s.remoteAddr, SourceAddr: s.localAddr,
TargetAddr: s.localAddr, TargetAddr: s.remoteAddr,
}, },
SeqNumSsr: s.seqNum, SeqNumSsr: s.seqNum,
SeqNumSse: sseMsg.SeqNum, SeqNumSse: sseMsg.SeqNum,
SeqInit1: s.calculateSeqInit1(sseMsg.SeqEnq1), SeqInit1: s.calculateSeqInit1(sseMsg.SeqEnq1),
SeqInit2: s.calculateSeqInit1(sseMsg.SeqEnq1), SeqInit2: s.calculateSeqInit2(sseMsg.SeqEnq2),
DataVer: 0x01, DataVer: 0x01,
} }
ssrBytes := ssrMsg.Encode() ssrBytes := ssrMsg.Encode()
@ -372,8 +414,8 @@ func (s *serviceContext) handleSseMsg(data []byte) {
} else { } else {
logger().Info(fmt.Sprintf("发送SSR数据：%x", ssrBytes)) logger().Info(fmt.Sprintf("发送SSR数据：%x", ssrBytes))
//更新本地数据 //更新本地数据
s.lastSeqParam1 = sseMsg.SeqEnq1 s.lastSeqParam1 = (&lfsr{value: s.remoteSinit1, poly: msg.T_POLY_1}).add(sseMsg.SeqEnq1)
s.lastSeqParam2 = sseMsg.SeqEnq2 s.lastSeqParam2 = (&lfsr{value: s.remoteSinit2, poly: msg.T_POLY_2}).add(sseMsg.SeqEnq2)
} }
} }
@ -394,9 +436,10 @@ func (s *serviceContext) handleSsrMsg(data []byte) {
return return
} }
logger().Info("SSR数据通过校验") logger().Info("SSR数据通过校验")
//完成校正时序 //完成校正时序（precSinit~+t_e == Sinit_r~+(sid_r^t_r)）
s.lastSeqParam1 = (&lfsr{value: s.precSinit1, poly: msg.T_POLY_1}).add(ssrMsg.SeqInit1 ^ (s.sseMsg.SeqEnq1 ^ s.localSid1))
s.lastSeqParam2 = (&lfsr{value: s.precSinit2, poly: msg.T_POLY_2}).add(ssrMsg.SeqInit2 ^ (s.sseMsg.SeqEnq2 ^ s.localSid2))
s.sseMsg = nil s.sseMsg = nil
s.lastSeqParam1 = ssrMsg.SeqNumSsr
} }
// 启动SSE流程 // 启动SSE流程
@ -405,8 +448,8 @@ func (s *serviceContext) startSeeProgress() {
MsgHeader: msg.MsgHeader{ MsgHeader: msg.MsgHeader{
ProtocolType: msg.ProtocolType_Sync, ProtocolType: msg.ProtocolType_Sync,
MessageType: msg.MessageType_SSE, MessageType: msg.MessageType_SSE,
SourceAddr: s.remoteAddr, SourceAddr: s.localAddr,
TargetAddr: s.localAddr, TargetAddr: s.remoteAddr,
}, },
SeqNum: s.seqNum, SeqNum: s.seqNum,
SeqEnq1: s.calculateSeqEnq1(), SeqEnq1: s.calculateSeqEnq1(),
@ -425,7 +468,7 @@ func (s *serviceContext) startSeeProgress() {
// 校验RSD消息 // 校验RSD消息
// return 0-时序校验之外的失败 1-成功 2-时序异常 // return 0-时序校验之外的失败 1-成功 2-时序异常
func (s *serviceContext) validateRsdMsg(rsdMsg *msg.RsdMsg) int { func (s *serviceContext) validateRsdMsg(rsdMsg *msg.RsdMsg, data []byte) int {
if rsdMsg.SourceAddr != s.remoteAddr { if rsdMsg.SourceAddr != s.remoteAddr {
logger().Error(fmt.Sprintf("源地址[%x]不正确[%s]", rsdMsg.SourceAddr, s.config.NetAConfig.RemoteAddr)) logger().Error(fmt.Sprintf("源地址[%x]不正确[%s]", rsdMsg.SourceAddr, s.config.NetAConfig.RemoteAddr))
return 0 return 0
@ -438,15 +481,15 @@ func (s *serviceContext) validateRsdMsg(rsdMsg *msg.RsdMsg) int {
logger().Error(fmt.Sprintf("命令数据长度[%d]与配置长度[%d]不符", len(rsdMsg.UserData), len(s.ciSectionIndexConfigs))) logger().Error(fmt.Sprintf("命令数据长度[%d]与配置长度[%d]不符", len(rsdMsg.UserData), len(s.ciSectionIndexConfigs)))
return 0 return 0
} }
if message.Rssp_I_Crc16(rsdMsg.UserData) != rsdMsg.Tail { if message.Rssp_I_Crc16(data[:len(data)-2]) != rsdMsg.Tail {
logger().Error(fmt.Sprintf("报文尾验证失败")) logger().Error(fmt.Sprintf("报文尾验证失败"))
return 0 return 0
} }
if s.validateSvc1(rsdMsg.Svc1, rsdMsg.UserData) { if !s.validateSvc1(rsdMsg.Svc1, rsdMsg.UserData) {
logger().Error(fmt.Sprintf("SVC1[%x]校验未通过", rsdMsg.Svc1)) logger().Error(fmt.Sprintf("SVC1[%x]校验未通过", rsdMsg.Svc1))
return 2 return 2
} }
if s.validateSvc2(rsdMsg.Svc2, rsdMsg.UserData) { if !s.validateSvc2(rsdMsg.Svc2, rsdMsg.UserData) {
logger().Error(fmt.Sprintf("SVC2[%x]校验未通过", rsdMsg.Svc2)) logger().Error(fmt.Sprintf("SVC2[%x]校验未通过", rsdMsg.Svc2))
return 2 return 2
} }
@ -459,37 +502,32 @@ func (s *serviceContext) validateSseMsg(sseMsg *msg.SseMsg) bool {
func (s *serviceContext) validateSsrMsg(ssrMsg *msg.SsrMsg) bool { func (s *serviceContext) validateSsrMsg(ssrMsg *msg.SsrMsg) bool {
if s.sseMsg.SeqNum != ssrMsg.SeqNumSse { if s.sseMsg.SeqNum != ssrMsg.SeqNumSse {
logger().Error(fmt.Sprintf("SSR的Ne[%d]与请求方不符[%d]", ssrMsg.SeqNumSse, s.sseMsg.SeqNum)) logger().Error(fmt.Sprintf("SSR的时序号[%d]与请求方不符[%d]", ssrMsg.SeqNumSse, s.sseMsg.SeqNum))
return false return false
} }
return true return true
} }
func (s *serviceContext) validateSvc1(svc uint32, userData []byte) bool { func (s *serviceContext) validateSvc1(svc uint32, userData []byte) bool {
return s.validateSvc(svc, msg.SCW_1, message.Rssp_I_Crc32C1(userData), s.sid1, s.sinit1, &s.lastSeqParam1) return s.validateSvc(svc, msg.SCW_1, message.Rssp_I_Crc32C1(userData), s.remoteSid1, s.remoteSinit1, &s.lastSeqParam1, msg.T_POLY_1)
} }
func (s *serviceContext) validateSvc2(svc uint32, userData []byte) bool { func (s *serviceContext) validateSvc2(svc uint32, userData []byte) bool {
return s.validateSvc(svc, msg.SCW_2, message.Rssp_I_Crc32C2(userData), s.sid2, s.sinit2, &s.lastSeqParam2) return s.validateSvc(svc, msg.SCW_2, message.Rssp_I_Crc32C2(userData), s.remoteSid2, s.remoteSinit2, &s.lastSeqParam2, msg.T_POLY_2)
} }
func (s *serviceContext) validateSvc(svc uint32, scw uint32, crc1 uint32, sid uint32, sinit uint32, lastSeqParam *uint32) bool { func (s *serviceContext) validateSvc(svc uint32, scw uint32, crc1 uint32, sid uint32, sinit uint32, lastSeqParam *uint32, tPoly uint32) bool {
seqParam := crc1 ^ svc ^ scw seqParam := crc1 ^ svc ^ scw
if *lastSeqParam == 0 { for i := 0; i <= s.config.NetAConfig.MaxDeviation; i++ {
*lastSeqParam = seqParam seqLfsr := lfsr{value: *lastSeqParam, poly: tPoly}
return true constLfsr := lfsr{value: sinit, poly: tPoly}
}
for i := 0; i < s.config.NetAConfig.MaxDeviation; i++ {
seqLfsr := lfsr{value: sinit}
seqLfsr.add(*lastSeqParam)
constLfsr := lfsr{value: sinit}
constLfsr.add(sid) constLfsr.add(sid)
for j := 0; j < i; j++ { for j := 0; j < i; j++ {
seqLfsr.add(0) seqLfsr.add(0)
constLfsr.add(0) constLfsr.add(0)
} }
if seqLfsr.add(seqParam) == seqLfsr.add(sid) { if seqLfsr.add(seqParam) == constLfsr.add(sid) {
*lastSeqParam = seqParam *lastSeqParam = seqLfsr.load(sinit).add(seqParam)
return true return true
} }
} }
@ -505,11 +543,11 @@ func (s *serviceContext) calculateSeqEnq2() uint32 {
} }
func (s *serviceContext) calculateSeqInit1(seqEnq1 uint32) uint32 { func (s *serviceContext) calculateSeqInit1(seqEnq1 uint32) uint32 {
return seqEnq1 ^ s.sid1 ^ s.dataver1 ^ s.lfsr1.value return seqEnq1 ^ s.localSid1 ^ s.localDataVer1 ^ s.lfsr1.value
} }
func (s *serviceContext) calculateSeqInit2(seqEnq2 uint32) uint32 { func (s *serviceContext) calculateSeqInit2(seqEnq2 uint32) uint32 {
return seqEnq2 ^ s.sid2 ^ s.dataver2 ^ s.lfsr2.value return seqEnq2 ^ s.localSid2 ^ s.localDataVer2 ^ s.lfsr2.value
} }
type lfsr struct { type lfsr struct {
@ -517,6 +555,11 @@ type lfsr struct {
poly uint32 //时间戳生成多项式 poly uint32 //时间戳生成多项式
} }
func (l *lfsr) load(value uint32) *lfsr {
l.value = value
return l
}
func (l *lfsr) add(x uint32) uint32 { func (l *lfsr) add(x uint32) uint32 {
l.value = l.value ^ x l.value = l.value ^ x
var carry bool var carry bool
@ -530,6 +573,23 @@ func (l *lfsr) add(x uint32) uint32 {
return l.value return l.value
} }
func (l *lfsr) post(x uint32) uint32 {
var carry bool
for i := 0; i < 32; i++ {
carry = x&1 == 1
if carry {
x ^= l.poly
}
x = x >> 1
if carry {
x |= 0x80000000
}
}
l.value ^= x
return l.value
}
func logger() *slog.Logger { func logger() *slog.Logger {
loggerInit.Do(func() { loggerInit.Do(func() {
privateLogger = slog.Default().With("tag", logTag) privateLogger = slog.Default().With("tag", logTag)

200
third_party/example/rssp/main.go vendored
View File

@ -1,200 +0,0 @@
package main
import (
"encoding/binary"
"fmt"
"joylink.club/bj-rtsts-server/third_party/axle_device/beijing12/msg"
"joylink.club/bj-rtsts-server/third_party/message"
)
// 通过抓包数据测试svc校验逻辑
func main() {
var scw1 uint32 = 0xAE390B5A
var sid1 uint32 = 0xa2bcfc8c
//var sid1 uint32 = 0x7665986c
//var sinit uint32 = 0xb763ec88
var sinit uint32 = 0xc8b60868
var svcn_1 uint32 = 0xb4b6c3eb
svcn_1 = binary.LittleEndian.Uint32(binary.BigEndian.AppendUint32([]byte{}, svcn_1))
var svcn uint32 = 0xb4c640a2
svcn = binary.LittleEndian.Uint32(binary.BigEndian.AppendUint32([]byte{}, svcn))
var userData []byte = []byte{0x80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00}
crc1 := crc32Encode1(userData)
m := func(svc1 uint32) uint32 {
return (svc1 ^ crc1) ^ scw1
}
rn_1 := m(svcn_1)
rn := m(svcn)
l1 := &Lfsr{
value: sinit,
}
//l1_1 := &Lfsr{value: rn}
//rn = l1_1.add(0)
l1.add(rn_1)
l1.add(0)
l1.add(rn)
fmt.Printf("%x\n", l1.value)
//sinit~<sid1~<sid1
l2 := &Lfsr{
value: sinit,
}
l2.add(sid1)
l2.add(0)
l2.add(sid1)
fmt.Printf("%x\n", l2.value)
fmt.Println(fmt.Sprintf("验证结果：%v", l1.value == l2.value))
}
//// 通过抓包数据测试svc计算逻辑
//func main() {
// var scw uint32 = 0xAE390B5A
// var sid uint32 = 0xa2bcfc8c //remote sid0
// //var sid uint32 = 0xe9436c8e //remote sid1
// //var sid uint32 = 0x7665986c //local sid0
// //var sid uint32 = 0x67da286e //local sid1
//
// lfsr := Lfsr{
// value: sid,
// }
// lfsr.add(0)
// var userData []byte = []byte{0x80, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00}
// crc1 := crc32Encode1(userData)
// svc := crc1 ^ sid ^ lfsr.value ^ scw
// fmt.Printf("%x:%s\n", svc, "b4b6c3eb")
//}
func crc32Encode1(data []byte) uint32 {
return message.Rssp_I_Crc32C1(data)
}
type Lfsr struct {
value uint32
}
func (l *Lfsr) add(x uint32) uint32 {
l.value = l.value ^ x
var carry bool
for i := 0; i < 32; i++ {
carry = l.value&0x80000000 != 0
l.value = l.value << 1
if carry {
l.value ^= msg.T_POLY_1
}
}
return l.value
}
//// FSFB2协议中POST_RXDATA(SIDSENDER)示例的测试
//func main() {
// var sinit uint32 = 0x0AA65708
// var sid uint32 = 0x59E82D0C
// var t8 uint32 = 0xEBDF7C2C
// var t9 uint32 = 0x0C806DD6
//
// sid_t8 := sid ^ t8
// fmt.Printf("%x\n", sid_t8)
// lfsr := Lfsr{
// value: sinit,
// }
// fmt.Printf("%x\n", lfsr.add(sid_t8))
// sid_t9 := sid ^ t9
// fmt.Printf("%x\n", sid_t9)
// fmt.Printf("%x\n", lfsr.add(sid_t9))
//
// l2 := Lfsr{value: 0}
// fmt.Printf("%X:%s", l2.add(lfsr.value), "BF550BA0")
//}
//// FSFB2协议中时间戳示例的测试
//func main() {
// var sid uint32 = 0x0B7A7124
// lfsr := Lfsr{
// value: sid,
// }
// fmt.Printf("%x\n", lfsr.add(0))
// fmt.Printf("%x\n", lfsr.add(0))
//}
//// FSFB2协议中CRC校验示例的测试
//func main() {
// dataStr := "00100010000000100010011100001111"
// runes := []rune(dataStr)
// for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
// runes[i], runes[j] = runes[j], runes[i]
// }
// dataStr = string(runes)
// data, err := strconv.ParseUint(dataStr, 2, 32)
// if err != nil {
// panic(err)
// }
// data2 := uint32(data)
// fmt.Printf("%x\n", onecrc32(0, uint32(data2), 0))
// mkcrctab(0)
// fmt.Printf("%x\n", Ncrc(0, binary.LittleEndian.AppendUint32([]byte{}, data2), 0))
// bytess := binary.LittleEndian.AppendUint32([]byte{}, data2)
// fmt.Printf("%x\n", crc32Encode1(bytess))
//}
//// // FSFB2协议中CRC校验示例的测试2
//func main() {
// var item1 uint32 = 0x013456ab
// var item uint32 = 0x44eeFFA4
// fmt.Printf("%x\n", onecrc32(0, item, onecrc32(0, item1, 0)))
// crctest := make([]byte, 8)
// binary.LittleEndian.PutUint32(crctest[0:4], item1)
// binary.LittleEndian.PutUint32(crctest[4:8], item)
// mkcrctab(0)
// fmt.Printf("%x\n", Ncrc(0, crctest, 0))
//}
var maskcrc []uint32 = []uint32{0xC672B008, 0x8806A731}
func onecrc32(ch uint, item uint32, start uint32) uint32 {
var accum uint32 = start
mask := maskcrc[ch]
for i := 32; i > 0; i-- {
if (item^accum)&1 == 1 {
accum = (accum >> 1) ^ mask
} else {
accum >>= 1
}
item >>= 1
}
return accum
}
const DIMTAB = 256
var crctab [2][DIMTAB]uint32
func onecrc(ch uint, item uint32, start uint32) uint32 {
accum := start
mask := maskcrc[ch]
for i := 8; i > 0; i-- {
if (item^accum)&1 != 0 {
accum = (accum >> 1) ^ mask
} else {
accum >>= 1
}
item >>= 1
}
return accum
}
func mkcrctab(ch uint) {
for i := 0; i < DIMTAB; i++ {
crctab[ch][i] = onecrc(ch, uint32(i), 0)
}
}
func Ncrc(ch uint, buf []byte, start uint32) uint32 {
crccode := start
for _, b := range buf {
crccode = crctab[ch][byte(crccode)^b] ^ ((crccode >> 8) & 0x00FFFFFF)
}
return crccode
}

23
third_party/message/rssp_code.go vendored
View File

@ -20,22 +20,19 @@ func Rssp_I_Crc16(data []byte) uint16 {
// 通道1的crc32 // 通道1的crc32
func Rssp_I_Crc32C1(data []byte) uint32 { func Rssp_I_Crc32C1(data []byte) uint32 {
var result byte newData := reverseBitsInByte(data)
for i, b := range data { return uint32(RSSP_I_C1_CRC32.CalculateCRC(newData))
result = 0
for i := 0; i < 8; i++ {
result <<= 1
result |= b & 1
b >>= 1
}
data[i] = result
}
return uint32(RSSP_I_C1_CRC32.CalculateCRC(data))
} }
// 通道2的crc32 // 通道2的crc32
func Rssp_I_Crc32C2(data []byte) uint32 { func Rssp_I_Crc32C2(data []byte) uint32 {
newData := reverseBitsInByte(data)
return uint32(RSSP_I_C2_CRC32.CalculateCRC(newData))
}
func reverseBitsInByte(data []byte) []byte {
var result byte var result byte
newData := make([]byte, len(data))
for i, b := range data { for i, b := range data {
result = 0 result = 0
for i := 0; i < 8; i++ { for i := 0; i < 8; i++ {
@ -43,7 +40,7 @@ func Rssp_I_Crc32C2(data []byte) uint32 {
result |= b & 1 result |= b & 1
b >>= 1 b >>= 1
} }
data[i] = result newData[i] = result
} }
return uint32(RSSP_I_C2_CRC32.CalculateCRC(data)) return newData
} }