12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118 |
- #include "optiga/common/Util.h"
- #include "optiga/dtls/DtlsRecordLayer.h"
- #ifdef MODULE_ENABLE_DTLS_MUTUAL_AUTH
- #define DEFAULT_WINDOW_SIZE 32
- #define PROTOCOL_VERSION_1_2 0xFEFD
- #define UDP_OVERHEAD 28
- typedef struct sCBValidateRec_d
- {
-
- sRecordLayer_d* psRecordLayer;
-
- sbBlob_d* psbBlob;
-
- sRecordData_d* psRecordData;
- }sCBValidateRec_d;
- _STATIC_H int32_t DtlsRL_Record_ProcessRecord(const sRecordLayer_d* PpsRecordLayer,const sbBlob_d* PpsBlobRecord,sRecordData_d* PpsRecData);
- _STATIC_H int32_t DtlsRL_Record_PrepareRecord(sRecordLayer_d* PpsRecordLayer,const sRecordData_d* PpsRecData,sbBlob_d* PpsBlobRecord);
- _STATIC_H int32_t DtlsRL_CallBack_ValidateRec(const Void* PpvParams);
- _STATIC_H int32_t DtlsRL_GetRecordCount(uint8_t* PpbBuffer,uint16_t PwLen,uint8_t* PpbRecCount);
- _STATIC_H int32_t DtlsRL_Record_ProcessRecord(const sRecordLayer_d* PpsRecordLayer,const sbBlob_d* PpsBlobRecord,sRecordData_d* PpsRecData)
- {
- int32_t i4Status = OCP_RL_ERROR;
- uint16_t wRecvFragLen;
- uint16_t wServerEpoch;
- sbBlob_d sBlobCipherMsg;
- sbBlob_d sBlobPlainMsg;
- uint8_t bContentType;
- uint8_t* pbDecData = NULL;
- uint16_t wInputProtVersion;
- do
- {
- #define MIN_DEC_PAYLOAD 17
-
- if((0 == PpsBlobRecord->wLen)||(0 == PpsRecData->psBlobInOutMsg->wLen))
- {
-
- i4Status = (int32_t)OCP_RL_INVALID_RECORD_LENGTH;
- break;
- }
- bContentType = PpsBlobRecord->prgbStream[OFFSET_RL_CONTENTTYPE];
- wServerEpoch = Utility_GetUint16(PpsBlobRecord->prgbStream + OFFSET_RL_EPOCH);
- wInputProtVersion = Utility_GetUint16(PpsBlobRecord->prgbStream + OFFSET_RL_PROT_VERSION);
- #ifdef SUPPORT_OPENSSL
-
- #define PROTOCOL_VERSION_1_0 0xFEFF
-
- if(*(PpsBlobRecord->prgbStream+LENGTH_RL_HEADER) == 0x03)
- {
- if((PROTOCOL_VERSION_1_2 != wInputProtVersion)&&(PROTOCOL_VERSION_1_0 != wInputProtVersion))
- {
- i4Status = (int32_t)OCP_RL_INVALID_PROTOCOL_VERSION;
- break;
- }
- }
- else
- {
- if(PpsRecordLayer->wTlsVersionInfo != wInputProtVersion)
- {
- i4Status = (int32_t)OCP_RL_INVALID_PROTOCOL_VERSION;
- break;
- }
- }
- #undef PROTOCOL_VERSION_1_0
- #else
- if(PpsRecordLayer->wTlsVersionInfo != wInputProtVersion)
- {
- i4Status = (int32_t)OCP_RL_INVALID_PROTOCOL_VERSION;
- break;
- }
- #endif
- wRecvFragLen = Utility_GetUint16(PpsBlobRecord->prgbStream + OFFSET_RL_FRAG_LENGTH);
-
- *PpsRecordLayer->pbDec = 0x00;
- if(CONTENTTYPE_CIPHER_SPEC == bContentType)
- {
- if((wRecvFragLen != 0x01) || ((PpsRecordLayer->wClientNextEpoch != (PpsRecordLayer->wServerEpoch+1))) || (wServerEpoch != 0x00)
- || (CONTENTTYPE_HANDSHAKE != PpsRecData->bContentType))
- {
-
- i4Status = (int32_t)OCP_RL_BAD_RECORD;
- }
- else
- {
- PpsRecData->bContentType = bContentType;
- *PpsRecordLayer->pbRecvCCSRecord = CCS_RECORD_RECV;
- Utility_Memmove(PpsRecData->psBlobInOutMsg->prgbStream, PpsBlobRecord->prgbStream + OFFSET_RL_FRAGMENT, \
- wRecvFragLen);
- PpsRecData->psBlobInOutMsg->wLen = wRecvFragLen;
- i4Status = OCP_RL_OK;
- }
- break;
- }
- else if((CONTENTTYPE_HANDSHAKE == PpsRecData->bContentType) && (CONTENTTYPE_APP_DATA == bContentType))
- {
-
- i4Status = (int32_t)OCP_RL_BAD_RECORD;
- break;
- }
-
- else if(((ENC_DEC_ENABLED & PpsRecordLayer->bEncDecFlag)== ENC_DEC_ENABLED) &&
- (wServerEpoch == PpsRecordLayer->wClientNextEpoch))
- {
- if(wRecvFragLen < MIN_DEC_PAYLOAD)
- {
- i4Status = (int32_t)OCP_RL_INVALID_DEC_PAYLOAD_LEN;
- break;
- }
- pbDecData = (uint8_t*)OCP_MALLOC(PpsBlobRecord->wLen + OVERHEAD_UPDOWNLINK);
- if(NULL == pbDecData)
- {
- i4Status = (int32_t)OCP_RL_MALLOC_FAILURE;
- break;
- }
-
- Utility_Memmove((pbDecData + OVERHEAD_UPDOWNLINK), PpsBlobRecord->prgbStream, PpsBlobRecord->wLen);
-
- sBlobCipherMsg.prgbStream = pbDecData;
- sBlobCipherMsg.wLen = PpsBlobRecord->wLen + OVERHEAD_UPDOWNLINK;
- sBlobPlainMsg.prgbStream = pbDecData;
- sBlobPlainMsg.wLen = sBlobCipherMsg.wLen;
-
- i4Status = PpsRecordLayer->fEncDecRecord(PpsRecordLayer->pEncDecArgs, &sBlobCipherMsg, &sBlobPlainMsg, PpsBlobRecord->wLen);
- if(OCP_CL_OK == i4Status)
- {
- i4Status = OCP_RL_OK;
- PpsRecData->bContentType = bContentType;
- *PpsRecordLayer->pbDec = 0x01;
-
- PpsRecData->psBlobInOutMsg->wLen = sBlobPlainMsg.wLen - LENGTH_RL_HEADER;
- Utility_Memmove(PpsRecData->psBlobInOutMsg->prgbStream, sBlobPlainMsg.prgbStream + LENGTH_RL_HEADER, \
- PpsRecData->psBlobInOutMsg->wLen);
- }
- OCP_FREE(pbDecData);
- break;
- }
- else
- {
- PpsRecData->bContentType = bContentType;
-
- Utility_Memmove(PpsRecData->psBlobInOutMsg->prgbStream, \
- PpsBlobRecord->prgbStream + OFFSET_RL_FRAGMENT, \
- wRecvFragLen);
- PpsRecData->psBlobInOutMsg->wLen = wRecvFragLen;
- i4Status = OCP_RL_OK;
- }
- }while(0);
- return i4Status;
- }
- _STATIC_H int32_t DtlsRL_Record_PrepareRecord(sRecordLayer_d* PpsRecordLayer,const sRecordData_d* PpsRecData,sbBlob_d* PpsBlobRecord)
- {
- int32_t i4Status = OCP_RL_ERROR;
- sbBlob_d sBlobPlainMsg;
- sbBlob_d sBlobCipherMsg;
- sUint64 *psClientSeqNumber;
- uint16_t wClientEpoch = 0;
- do
- {
-
- if((0 == PpsBlobRecord->wLen)||(0 == PpsRecData->psBlobInOutMsg->wLen))
- {
-
- i4Status = (int32_t)OCP_RL_INVALID_RECORD_LENGTH;
- break;
- }
-
- if(PpsRecordLayer->wClientNextEpoch > PpsRecordLayer->wClientEpoch)
- {
- psClientSeqNumber = &PpsRecordLayer->sClientNextSeqNumber;
- wClientEpoch = PpsRecordLayer->wClientNextEpoch;
- }
- else if(PpsRecordLayer->wClientNextEpoch == PpsRecordLayer->wClientEpoch)
- {
- psClientSeqNumber = &PpsRecordLayer->sClientSeqNumber;
- wClientEpoch = PpsRecordLayer->wClientEpoch;
- }
-
- else
- {
- break;
- }
-
- PpsBlobRecord->prgbStream[0] = PpsRecData->bContentType;
-
- PpsBlobRecord->prgbStream[OFFSET_RL_PROT_VERSION] = (uint8_t)(PpsRecordLayer->wTlsVersionInfo >> 8);
- PpsBlobRecord->prgbStream[OFFSET_RL_PROT_VERSION+1] = (uint8_t)PpsRecordLayer->wTlsVersionInfo;
-
- PpsBlobRecord->prgbStream[OFFSET_RL_EPOCH] = (uint8_t)(wClientEpoch >> 8);
- PpsBlobRecord->prgbStream[OFFSET_RL_EPOCH + 1] = (uint8_t)wClientEpoch;
-
- if((OFFSET_RL_SEQUENCE + LENGTH_RL_SEQUENCE)>PpsBlobRecord->wLen)
- {
- break;
- }
- #define MAX_HIGH_SEQ_NUM 0x00010000
-
- if((MAX_HIGH_SEQ_NUM == psClientSeqNumber->dwHigherByte) && (0x00 == psClientSeqNumber->dwLowerByte))
- {
- i4Status = (int32_t) OCP_RL_SEQUENCE_OVERFLOW;
- break;
- }
-
- Utility_SetUint16(PpsBlobRecord->prgbStream+OFFSET_RL_SEQUENCE,(uint16_t)psClientSeqNumber->dwHigherByte);
- Utility_SetUint32(PpsBlobRecord->prgbStream+OFFSET_RL_SEQUENCE+2,psClientSeqNumber->dwLowerByte);
-
- PpsBlobRecord->prgbStream[OFFSET_RL_FRAG_LENGTH] = (uint8_t)(PpsRecData->psBlobInOutMsg->wLen >> 8);
- PpsBlobRecord->prgbStream[OFFSET_RL_FRAG_LENGTH+1] = (uint8_t)PpsRecData->psBlobInOutMsg->wLen;
-
- if((ENC_DEC_ENABLED&PpsRecordLayer->bEncDecFlag)== ENC_DEC_ENABLED)
- {
-
- Utility_Memmove(PpsBlobRecord->prgbStream + OVERHEAD_UPDOWNLINK, PpsBlobRecord->prgbStream, LENGTH_RL_HEADER);
-
- Utility_Memmove(PpsBlobRecord->prgbStream + LENGTH_RL_HEADER + OVERHEAD_UPDOWNLINK,
- PpsRecData->psBlobInOutMsg->prgbStream, PpsRecData->psBlobInOutMsg->wLen);
- sBlobPlainMsg.prgbStream = PpsBlobRecord->prgbStream;
- sBlobPlainMsg.wLen = PpsRecData->psBlobInOutMsg->wLen + LENGTH_RL_HEADER + OVERHEAD_UPDOWNLINK;
- sBlobCipherMsg.prgbStream = PpsBlobRecord->prgbStream;
- sBlobCipherMsg.wLen = PpsBlobRecord->wLen;
-
- i4Status = PpsRecordLayer->fEncDecRecord(PpsRecordLayer->pEncDecArgs, &sBlobPlainMsg, &sBlobCipherMsg,
- (PpsRecData->psBlobInOutMsg->wLen + LENGTH_RL_HEADER));
- if(OCP_CL_OK == i4Status)
- {
- i4Status = OCP_RL_OK;
- PpsBlobRecord->wLen = sBlobCipherMsg.wLen;
- }
- }
- else
- {
- if(CONTENTTYPE_CIPHER_SPEC == PpsRecData->bContentType)
- {
- PpsRecordLayer->wClientNextEpoch++ ;
- PpsRecordLayer->bEncDecFlag = 0xB5;
- }
- if(FALSE == PpsRecData->bMemoryAllocated)
- {
-
- Utility_Memmove(PpsBlobRecord->prgbStream + OFFSET_RL_FRAGMENT,
- PpsRecData->psBlobInOutMsg->prgbStream,
- PpsRecData->psBlobInOutMsg->wLen);
- }
- PpsBlobRecord->wLen = PpsRecData->psBlobInOutMsg->wLen + LENGTH_RL_HEADER;
- i4Status = OCP_RL_OK;
- }
-
- if(OCP_RL_OK != i4Status)
- {
- PpsBlobRecord->wLen = 0;
- break;
- }
- i4Status = IncrementUint64(psClientSeqNumber);
- if(UTIL_SUCCESS == i4Status)
- {
- i4Status = OCP_RL_OK;
- }
- }while(0);
- #undef RECORDSEQ_HIGH
- return i4Status;
- }
- _STATIC_H int32_t DtlsRL_CallBack_ValidateRec(const Void* PpvParams)
- {
- #define CB_PARAMS ((sCBValidateRec_d*)PpvParams)
- return DtlsRL_Record_ProcessRecord(CB_PARAMS->psRecordLayer,CB_PARAMS->psbBlob,CB_PARAMS->psRecordData);
- #undef CB_PARAMS
- }
- _STATIC_H Void DtlsRL_CB_ChangeServerState(const Void* PpCBParams)
- {
- #define S_RECORDLAYER ((sRecordLayer_d*)(((sCBStateTrn_d*)PpCBParams)->phRLHdl))
- S_RECORDLAYER->wServerEpoch++;
- *S_RECORDLAYER->pbRecvCCSRecord = CCS_RECORD_NOTRECV;
- #undef S_RECORDLAYER
- }
- _STATIC_H int32_t DtlsRL_GetRecordCount(uint8_t* PpbBuffer,uint16_t PwLen,uint8_t* PpbRecCount)
- {
- int32_t i4Status = OCP_RL_ERROR;
- uint8_t* pbRecPtr = PpbBuffer;
- uint16_t wRemainingLen = PwLen;
- uint16_t wRecLen = 0;
- *PpbRecCount = 0;
- do
- {
-
- if(wRemainingLen > LENGTH_RL_HEADER)
- {
-
- if((*pbRecPtr != CONTENTTYPE_CIPHER_SPEC) &&
- (*pbRecPtr != CONTENTTYPE_ALERT) &&
- (*pbRecPtr != CONTENTTYPE_HANDSHAKE) &&
- (*pbRecPtr != CONTENTTYPE_APP_DATA))
- {
- break;
- }
-
- wRecLen = (uint32_t)Utility_GetUint16(pbRecPtr+OFFSET_RL_FRAG_LENGTH);
- if((wRecLen+LENGTH_RL_HEADER) > wRemainingLen)
- {
- break;
- }
- (*PpbRecCount)++;
- wRemainingLen -= (wRecLen + LENGTH_RL_HEADER);
- pbRecPtr += (wRecLen + LENGTH_RL_HEADER);
- i4Status = OCP_RL_OK;
- }
- else
- {
- i4Status = (int32_t)OCP_RL_OK;
- break;
- }
- }while(TRUE);
- if(0 == (*PpbRecCount))
- {
- i4Status = OCP_RL_ERROR;
- }
- return i4Status;
- }
- int32_t DtlsRL_Send(sRL_d* PpsRecordLayer,uint8_t* PpbData,uint16_t PwDataLen)
- {
- int32_t i4Status = OCP_RL_ERROR;
- sRecordData_d sRecordData;
- uint8_t* pbTotalFragMem = NULL;
- uint8_t* pbEncData = NULL;
- sbBlob_d sBlobData;
- sbBlob_d sRecordBlobData;
- #define S_RECORDLAYER ((sRecordLayer_d*)(PpsRecordLayer->phRLHdl))
- do
- {
-
- if(PpsRecordLayer->fRetransmit == TRUE)
- {
- S_RECORDLAYER->wClientNextEpoch--;
- S_RECORDLAYER->bEncDecFlag = 0x00;
- PpsRecordLayer->fRetransmit = FALSE;
- }
- if(TRUE == PpsRecordLayer->bMemoryAllocated)
- {
-
-
- sRecordData.bContentType = PpsRecordLayer->bContentType;
- sRecordData.psBlobInOutMsg = &sRecordBlobData;
- sRecordData.psBlobInOutMsg->prgbStream = PpbData+LENGTH_RL_HEADER;
- sRecordData.psBlobInOutMsg->wLen = PwDataLen-LENGTH_RL_HEADER;
-
- if(S_RECORDLAYER->bEncDecFlag != ENC_DEC_ENABLED)
- {
- sBlobData.prgbStream = PpbData;
- sBlobData.wLen = PwDataLen;
- }
- }
- else
- {
- sRecordData.bContentType = PpsRecordLayer->bContentType;
- sRecordData.psBlobInOutMsg = &sRecordBlobData;
- sRecordData.psBlobInOutMsg->prgbStream = PpbData;
- sRecordData.psBlobInOutMsg->wLen = PwDataLen;
- if(S_RECORDLAYER->bEncDecFlag != ENC_DEC_ENABLED)
- {
-
- pbTotalFragMem = (uint8_t*)OCP_MALLOC(PwDataLen + LENGTH_RL_HEADER);
- if(NULL == pbTotalFragMem)
- {
- i4Status = (int32_t)OCP_RL_MALLOC_FAILURE;
- break;
- }
- sBlobData.prgbStream = pbTotalFragMem;
- sBlobData.wLen = PwDataLen + LENGTH_RL_HEADER;
- }
- }
-
- if(S_RECORDLAYER->bEncDecFlag == ENC_DEC_ENABLED)
- {
- pbEncData = (uint8_t*)OCP_MALLOC(PwDataLen + LENGTH_RL_HEADER + MAC_LENGTH + EXPLICIT_NOUNCE_LENGTH + OVERHEAD_UPDOWNLINK);
- if(NULL == pbEncData)
- {
- i4Status = (int32_t)OCP_RL_MALLOC_FAILURE;
- break;
- }
- sBlobData.prgbStream = pbEncData;
- sBlobData.wLen = PwDataLen + LENGTH_RL_HEADER + MAC_LENGTH + EXPLICIT_NOUNCE_LENGTH + OVERHEAD_UPDOWNLINK;
- }
-
- S_RECORDLAYER->fEncDecRecord = PpsRecordLayer->psConfigCL->pfEncrypt;
- S_RECORDLAYER->pEncDecArgs = &(PpsRecordLayer->psConfigCL->sCL);
-
- sRecordData.bMemoryAllocated = PpsRecordLayer->bMemoryAllocated;
- i4Status = DtlsRL_Record_PrepareRecord(S_RECORDLAYER,&sRecordData,&sBlobData);
- if(OCP_RL_OK != i4Status)
- {
- break;
- }
-
- i4Status = PpsRecordLayer->psConfigTL->pfSend(&(PpsRecordLayer->psConfigTL->sTL),
- sBlobData.prgbStream,sBlobData.wLen);
- if(OCP_TL_OK != i4Status)
- {
- break;
- }
- i4Status = (int32_t)OCP_RL_OK;
- }while(FALSE);
- if(FALSE == PpsRecordLayer->bMemoryAllocated)
- {
- OCP_FREE(pbTotalFragMem);
- }
- if(S_RECORDLAYER->bEncDecFlag == ENC_DEC_ENABLED)
- {
- OCP_FREE(pbEncData);
- }
- #undef S_RECORDLAYER
- return i4Status;
- }
- void Dtls_SlideWindow(const sRL_d* PpsRecordLayer, eAuthState_d PeAuthState)
- {
- int32_t i4Status = (int32_t)OCP_RL_OK;
- uint8_t bSlideCount = 0;
- uint8_t count = 0;
- uint8_t bLoopCount = 1;
- uint16_t wWordValue;
- uint32_t dwValue;
- sUint64 sBoundValue;
- sWindow_d *psWindow;
-
- #define PS_WINDOW ((sRecordLayer_d*)(PpsRecordLayer->phRLHdl))->psWindow
- #define PS_NEXTWINDOW ((sRecordLayer_d*)(PpsRecordLayer->phRLHdl))->psNextWindow
-
- do
- {
- #define MAX_LOW_SEQ_NUM 0xFFFFFFFF
- #define RECORDSEQ_HIGH 0xFFFF
- if(eAuthCompleted == PeAuthState)
- {
- bLoopCount = 2;
- }
- while(bLoopCount > 0)
- {
- if(bLoopCount > 1)
- {
- psWindow = PS_NEXTWINDOW;
- }
- else
- {
- psWindow = PS_WINDOW;
- }
-
- if(32 == psWindow->bWindowSize)
- {
- dwValue = psWindow->sWindowFrame.dwHigherByte;
-
- while(count < 32)
- {
- if(LEAST_SIGNIFICANT_BIT_HIGH == (LEAST_SIGNIFICANT_BIT_HIGH & dwValue))
- {
- break;
- }
- dwValue = dwValue >> 1 ;
- count++;
- }
- bSlideCount = psWindow->bWindowSize - count;
- }
-
- if(32 < psWindow->bWindowSize)
- {
-
- if(psWindow->sWindowFrame.dwLowerByte > 0)
- {
-
- if(psWindow->sWindowFrame.dwLowerByte > 0xFFFF)
- {
- wWordValue = psWindow->sWindowFrame.dwLowerByte >> 16;
- }
-
- else
- {
- bSlideCount+= 16;
- wWordValue = (uint16_t)psWindow->sWindowFrame.dwLowerByte;
- }
- while(count < 16)
- {
- if(0x0001 == (wWordValue & 0x0001))
- {
- break;
- }
- wWordValue = wWordValue >> 1;
- count++;
- }
- count = 16 - count;
- bSlideCount += count ;
- bSlideCount += (psWindow->bWindowSize - 32);
- }
-
- else
- {
- dwValue = psWindow->sWindowFrame.dwHigherByte;
-
- while(count < 32)
- {
- if(LEAST_SIGNIFICANT_BIT_HIGH == (LEAST_SIGNIFICANT_BIT_HIGH & dwValue))
- {
- break;
- }
- dwValue = dwValue >> 1 ;
- count++;
- }
- bSlideCount = ((psWindow->bWindowSize - 32) - count);
- }
- }
- sBoundValue.dwHigherByte = 0x00;
- sBoundValue.dwLowerByte = bSlideCount;
-
- i4Status = AddUint64(&psWindow->sLowerBound, &sBoundValue,&psWindow->sLowerBound);
- if(UTIL_SUCCESS != i4Status)
- {
- break;
- }
-
- i4Status = AddUint64(&psWindow->sHigherBound, &sBoundValue,&psWindow->sHigherBound);
- if(UTIL_SUCCESS != i4Status)
- {
- break;
- }
-
- psWindow->sWindowFrame.dwLowerByte = 0x00;
- psWindow->sWindowFrame.dwHigherByte = 0x00;
-
- if(psWindow->sHigherBound.dwHigherByte > (uint32_t)RECORDSEQ_HIGH)
- {
- sBoundValue.dwHigherByte = RECORDSEQ_HIGH;
- sBoundValue.dwLowerByte = MAX_LOW_SEQ_NUM;
-
- i4Status = SubtractUint64(&psWindow->sHigherBound, &sBoundValue, &sBoundValue);
- if(UTIL_SUCCESS != i4Status)
- {
- break;
- }
-
- if(32 == psWindow->bWindowSize)
- {
- psWindow->sWindowFrame.dwHigherByte = MAX_LOW_SEQ_NUM;
- dwValue = 32 - sBoundValue.dwLowerByte;
- while(dwValue--)
- {
- psWindow->sWindowFrame.dwHigherByte = psWindow->sWindowFrame.dwHigherByte >> 1;
- }
- }
-
- else
- {
- psWindow->sWindowFrame.dwLowerByte = MAX_LOW_SEQ_NUM;
- if(sBoundValue.dwLowerByte > 32)
- {
- psWindow->sWindowFrame.dwHigherByte = MAX_LOW_SEQ_NUM;
- dwValue = psWindow->bWindowSize - sBoundValue.dwLowerByte;
- while(dwValue--)
- {
- psWindow->sWindowFrame.dwHigherByte = psWindow->sWindowFrame.dwHigherByte >> 1;
- }
- }
- else
- {
- dwValue = 32 - sBoundValue.dwLowerByte;
- while(dwValue--)
- {
- psWindow->sWindowFrame.dwLowerByte = psWindow->sWindowFrame.dwLowerByte >> 1;
- }
- }
- }
- }
-
- count = 0;
- bSlideCount = 0;
- dwValue = 0;
- wWordValue = 0;
- bLoopCount--;
- }
- }while(FALSE);
- #undef PS_WINDOW
- #undef PS_NEXTWINDOW
- #undef MAX_SEQ_NUM
- #undef RECORDSEQ_HIGH
- }
- int32_t DtlsRL_Recv(sRL_d* PpsRecordLayer,uint8_t* PpbBuffer,uint16_t* PpwLen)
- {
- int32_t i4Status = OCP_RL_ERROR;
- sbBlob_d sbBlobCBData;
- sCBValidateRec_d sCBValidateRec;
- sRecordData_d sRecData;
- sbBlob_d sInBlobData;
- sWindow_d *psWindow;
- uint16_t wServerEpoch;
- #define S_RECORDLAYER ((sRecordLayer_d*)(PpsRecordLayer->phRLHdl))
- do
- {
-
- if(0 == PpsRecordLayer->bMultipleRecord)
- {
-
- i4Status = PpsRecordLayer->psConfigTL->pfRecv(&(PpsRecordLayer->psConfigTL->sTL),
- PpbBuffer,PpwLen);
- if((int32_t)OCP_TL_NO_DATA == i4Status)
- {
- i4Status = (int32_t)OCP_RL_NO_DATA;
- break;
- }
- if(OCP_TL_OK != i4Status)
- {
- break;
- }
- if(*PpwLen > (MAX_PMTU - UDP_OVERHEAD))
- {
- i4Status = (int32_t)OCP_RL_INVALID_RECORD_LENGTH;
- break;
- }
-
- i4Status = DtlsRL_GetRecordCount(PpbBuffer,*PpwLen,&(PpsRecordLayer->bMultipleRecord));
- if(OCP_RL_OK != i4Status)
- {
- break;
- }
-
- sbBlobCBData.prgbStream = PpbBuffer;
- sbBlobCBData.wLen = LENGTH_RL_HEADER;
- sbBlobCBData.wLen += Utility_GetUint16(sbBlobCBData.prgbStream + OFFSET_RL_FRAG_LENGTH);
-
- PpsRecordLayer->pNextRecord = (sbBlobCBData.prgbStream + sbBlobCBData.wLen);
-
- PpsRecordLayer->bMultipleRecord--;
- }
- else
- {
-
-
- sbBlobCBData.prgbStream = PpsRecordLayer->pNextRecord;
- sbBlobCBData.wLen = LENGTH_RL_HEADER;
- sbBlobCBData.wLen += Utility_GetUint16(sbBlobCBData.prgbStream + OFFSET_RL_FRAG_LENGTH);
-
- PpsRecordLayer->pNextRecord = (sbBlobCBData.prgbStream + sbBlobCBData.wLen);
-
- PpsRecordLayer->bMultipleRecord--;
- }
-
- S_RECORDLAYER->fEncDecRecord = PpsRecordLayer->psConfigCL->pfDecrypt;
- S_RECORDLAYER->pEncDecArgs = &(PpsRecordLayer->psConfigCL->sCL);
- sCBValidateRec.psRecordLayer = S_RECORDLAYER;
- sCBValidateRec.psRecordData = &sRecData;
-
- sCBValidateRec.psRecordData->bContentType = PpsRecordLayer->bContentType;
- sCBValidateRec.psRecordData->psBlobInOutMsg = &sInBlobData;
- sCBValidateRec.psRecordData->psBlobInOutMsg->prgbStream = PpbBuffer;
- sCBValidateRec.psRecordData->psBlobInOutMsg->wLen = *PpwLen;
- S_RECORDLAYER->sServerSeqNumber.dwHigherByte = (uint32_t)Utility_GetUint16 (sbBlobCBData.prgbStream + OFFSET_RL_SEQUENCE);
- S_RECORDLAYER->sServerSeqNumber.dwLowerByte = Utility_GetUint32 (sbBlobCBData.prgbStream + OFFSET_RL_SEQUENCE + 2);
-
- sCBValidateRec.psbBlob = &sbBlobCBData;
-
-
-
- wServerEpoch = Utility_GetUint16 (sbBlobCBData.prgbStream + OFFSET_RL_EPOCH);
- if((S_RECORDLAYER->wServerEpoch > wServerEpoch)||
- (1 + S_RECORDLAYER->wServerEpoch) < wServerEpoch)
- {
- i4Status = (int32_t)OCP_RL_INCORRECT_EPOCH;
- break;
- }
-
- if((1 == (wServerEpoch-S_RECORDLAYER->wServerEpoch)) && (S_RECORDLAYER->wClientNextEpoch != wServerEpoch))
- {
- i4Status = (int32_t)OCP_RL_INCORRECT_EPOCH;
- break;
- }
-
- if(wServerEpoch == S_RECORDLAYER->wClientEpoch)
- {
- psWindow = S_RECORDLAYER->psWindow;
- }
-
- else if(wServerEpoch == (S_RECORDLAYER->wClientEpoch + 1))
- {
- psWindow = S_RECORDLAYER->psNextWindow;
- }
-
- else
- {
- i4Status = (int32_t)OCP_RL_INCORRECT_EPOCH;
- break;
- }
- psWindow->fValidateRecord = DtlsRL_CallBack_ValidateRec;
- psWindow->pValidateArgs = (Void*)&sCBValidateRec;
- psWindow->sRecvSeqNumber.dwHigherByte = S_RECORDLAYER->sServerSeqNumber.dwHigherByte;
- psWindow->sRecvSeqNumber.dwLowerByte = S_RECORDLAYER->sServerSeqNumber.dwLowerByte;
- i4Status = DtlsCheckReplay(psWindow);
- if(((int32_t)CMD_LIB_DECRYPT_FAILURE == i4Status) || ((int32_t)OCP_RL_MALLOC_FAILURE == i4Status))
- {
- break;
- }
- else if((int32_t)OCP_RL_WINDOW_IGNORE != i4Status)
- {
- *PpwLen = sCBValidateRec.psRecordData->psBlobInOutMsg->wLen;
- if( CONTENTTYPE_ALERT == sCBValidateRec.psRecordData->bContentType)
- {
- i4Status = (int32_t)OCP_RL_ALERT_RECEIVED;
- }
- else if(CONTENTTYPE_APP_DATA == sCBValidateRec.psRecordData->bContentType)
- {
- i4Status = (int32_t)OCP_RL_APPDATA_RECEIVED;
- }
- else
- {
- i4Status = (int32_t)OCP_RL_OK;
- }
- }
- else
- {
- i4Status = (int32_t)OCP_RL_ERROR;
- }
-
- }while(FALSE);
- #undef S_RECORDLAYER
- return i4Status;
- }
- int32_t DtlsRL_Init(sRL_d* PpsRL)
- {
- int32_t i4Status = OCP_RL_ERROR;
- do
- {
- PpsRL->phRLHdl = (sRecordLayer_d*)OCP_MALLOC(sizeof(sRecordLayer_d));
- if(NULL == PpsRL->phRLHdl)
- {
- i4Status = (int32_t)OCP_RL_MALLOC_FAILURE;
- break;
- }
- memset(PpsRL->phRLHdl, 0x00, sizeof(sRecordLayer_d));
-
- #define S_RECORDLAYER ((sRecordLayer_d*)(PpsRL->phRLHdl))
- #define PS_WINDOW (S_RECORDLAYER->psWindow)
- #define PS_NEXTWINDOW (S_RECORDLAYER->psNextWindow)
-
- S_RECORDLAYER->psWindow = NULL;
- S_RECORDLAYER->psNextWindow = NULL;
- S_RECORDLAYER->bEncDecFlag = 0;
- S_RECORDLAYER->wClientEpoch = 0;
- S_RECORDLAYER->wClientNextEpoch = 0;
- PpsRL->bDecRecord = 0;
- PpsRL->bRecvCCSRecord = CCS_RECORD_NOTRECV;
- S_RECORDLAYER->pbDec = &PpsRL->bDecRecord;
- S_RECORDLAYER->pbRecvCCSRecord = &PpsRL->bRecvCCSRecord;
- PpsRL->fServerStateTrn = DtlsRL_CB_ChangeServerState;
- S_RECORDLAYER->wTlsVersionInfo = PROTOCOL_VERSION_1_2;
- PpsRL->fRetransmit = FALSE;
- PpsRL->bMultipleRecord = 0x00;
- S_RECORDLAYER->psWindow = (sWindow_d*)OCP_MALLOC(sizeof(sWindow_d));
- if(NULL == S_RECORDLAYER->psWindow)
- {
- i4Status = (int32_t)OCP_RL_MALLOC_FAILURE;
- break;
- }
- memset(S_RECORDLAYER->psWindow, 0x00, sizeof(sWindow_d));
- PS_WINDOW->bWindowSize = DEFAULT_WINDOW_SIZE;
- PS_WINDOW->sHigherBound.dwLowerByte = PS_WINDOW->bWindowSize - 1;
- PS_WINDOW->sHigherBound.dwHigherByte = 0x00;
- S_RECORDLAYER->psNextWindow = (sWindow_d*)OCP_MALLOC(sizeof(sWindow_d));
- if(NULL == S_RECORDLAYER->psNextWindow)
- {
- i4Status = (int32_t)OCP_RL_MALLOC_FAILURE;
- break;
- }
- memset(S_RECORDLAYER->psNextWindow, 0x00, sizeof(sWindow_d));
- PS_NEXTWINDOW->bWindowSize = DEFAULT_WINDOW_SIZE;
- PS_NEXTWINDOW->sHigherBound.dwLowerByte = PS_WINDOW->bWindowSize - 1;
- PS_NEXTWINDOW->sHigherBound.dwHigherByte = 0x00;
- PS_WINDOW->fValidateRecord = NULL;
- PS_WINDOW->pValidateArgs = NULL;
- i4Status = OCP_RL_OK;
- }while(FALSE);
- #undef S_RECORDLAYER
- #undef PS_WINDOW
- #undef PS_NEXTWINDOW
- return i4Status;
- }
- void DtlsRL_Close(sRL_d* PpsRL)
- {
- #define PS_WINDOW (((sRecordLayer_d*)PpsRL->phRLHdl)->psWindow)
- #define PS_NEXTWINDOW (((sRecordLayer_d*)PpsRL->phRLHdl)->psNextWindow)
-
- if(NULL != PpsRL)
- {
- if(NULL != PpsRL->phRLHdl)
- {
- if(NULL != PS_WINDOW)
- {
-
- OCP_FREE(PS_WINDOW);
- if(NULL != PS_NEXTWINDOW)
- {
- OCP_FREE(PS_NEXTWINDOW);
- PS_NEXTWINDOW = NULL;
- }
- PS_WINDOW = NULL;
- }
-
- OCP_FREE(PpsRL->phRLHdl);
- PpsRL->phRLHdl = NULL;
- }
- }
- #undef PS_WINDOW
- #undef PS_NEXTWINDOW
- }
- #endif
|