/* * CW_FREE_WTP_MSG_ARRAY - free the array of the messages * to be sent relative to the WTP with the specified index. * * ref -> BUG ML12 * 20/10/2009 - Donato Capitella */ static void inline CW_FREE_WTP_MSG_ARRAY(int WTPIndex) { int i; for (i = 0; i < gWTPs[WTPIndex].messagesCount; i++) { CW_FREE_OBJECT(gWTPs[WTPIndex].messages[i].msg); } CW_FREE_OBJECT(gWTPs[WTPIndex].messages); gWTPs[WTPIndex].messagesCount = 0; }
void CWHandleTimer(CWTimerArg arg) { CWThreadTimerArg *a = (CWThreadTimerArg*)arg; CWThread requestedThreadPtr = *(a->requestedThreadPtr); int signalToRaise = a->signalToRaise; CWThreadSendSignal(requestedThreadPtr, signalToRaise); CWDebugLog("Timer Expired, Sent Signal(%d) to Thread: %d", signalToRaise, requestedThreadPtr); CW_FREE_OBJECT(a->requestedThreadPtr); CW_FREE_OBJECT(a); return; }
static int memory_read(BIO *b, char *out, int outl) { int ret = -1; char* buf; int size; BIO_memory_data* pData = (BIO_memory_data*)b->ptr; // //BIO_clear_retry_flags(b); // CWLockSafeList(pData->pRecvAddress); // Used only in DTLS handshake while (CWGetCountElementFromSafeList(pData->pRecvAddress) == 0){ CWWaitElementFromSafeList(pData->pRecvAddress); } buf = (char*)CWRemoveHeadElementFromSafeList(pData->pRecvAddress, &size); CWUnlockSafeList(pData->pRecvAddress); if ((buf == NULL) || (size <= 0)) CWLog("Warning empty buffer"); else { ret = ((size < outl) ? size : outl) - 4; memcpy(out, buf + 4, ret); CW_FREE_OBJECT(buf); } return ret; }
/* * Receive a message, that can be fragmented. This is useful not only for the Join State */ CWBool CWReceiveMessage(CWProtocolMessage *msgPtr) { CWList fragments = NULL; int readBytes; char buf[CW_BUFFER_SIZE]; CWBool dataFlag = CW_FALSE; CW_REPEAT_FOREVER { CW_ZERO_MEMORY(buf, CW_BUFFER_SIZE); #ifdef CW_NO_DTLS char *pkt_buffer = NULL; CWLockSafeList(gPacketReceiveList); while (CWGetCountElementFromSafeList(gPacketReceiveList) == 0) CWWaitElementFromSafeList(gPacketReceiveList); pkt_buffer = (char*)CWRemoveHeadElementFromSafeListwithDataFlag(gPacketReceiveList, &readBytes,&dataFlag); CWUnlockSafeList(gPacketReceiveList); CW_COPY_MEMORY(buf, pkt_buffer, readBytes); CW_FREE_OBJECT(pkt_buffer); #else if(!CWSecurityReceive(gWTPSession, buf, CW_BUFFER_SIZE, &readBytes)) {return CW_FALSE;} #endif if(!CWProtocolParseFragment(buf, readBytes, &fragments, msgPtr, &dataFlag, NULL)) { if(CWErrorGetLastErrorCode() == CW_ERROR_NEED_RESOURCE) { // we need at least one more fragment continue; } else { // error CWErrorCode error; error=CWErrorGetLastErrorCode(); switch(error) { case CW_ERROR_SUCCESS: {CWDebugLog("ERROR: Success"); break;} case CW_ERROR_OUT_OF_MEMORY: {CWDebugLog("ERROR: Out of Memory"); break;} case CW_ERROR_WRONG_ARG: {CWDebugLog("ERROR: Wrong Argument"); break;} case CW_ERROR_INTERRUPTED: {CWDebugLog("ERROR: Interrupted"); break;} case CW_ERROR_NEED_RESOURCE: {CWDebugLog("ERROR: Need Resource"); break;} case CW_ERROR_COMUNICATING: {CWDebugLog("ERROR: Comunicating"); break;} case CW_ERROR_CREATING: {CWDebugLog("ERROR: Creating"); break;} case CW_ERROR_GENERAL: {CWDebugLog("ERROR: General"); break;} case CW_ERROR_OPERATION_ABORTED: {CWDebugLog("ERROR: Operation Aborted"); break;} case CW_ERROR_SENDING: {CWDebugLog("ERROR: Sending"); break;} case CW_ERROR_RECEIVING: {CWDebugLog("ERROR: Receiving"); break;} case CW_ERROR_INVALID_FORMAT: {CWDebugLog("ERROR: Invalid Format"); break;} case CW_ERROR_TIME_EXPIRED: {CWDebugLog("ERROR: Time Expired"); break;} case CW_ERROR_NONE: {CWDebugLog("ERROR: None"); break;} } CWDebugLog("~~~~~~"); return CW_FALSE; } } else break; // the message is fully reassembled } return CW_TRUE; }
CWBool CWParseSettingsFile() { char *line = NULL; gSettingsFile = fopen (CW_SETTINGS_FILE, "rb"); if (gSettingsFile == NULL) { CWErrorRaiseSystemError(CW_ERROR_GENERAL); } while((line = (char*)CWGetCommand(gSettingsFile)) != NULL) { char* startTag=NULL; char* endTag=NULL; if((startTag=strchr (line, '<'))==NULL) { CW_FREE_OBJECT(line); continue; } if((endTag=strchr (line, '>'))==NULL) { CW_FREE_OBJECT(line); continue; } if (!strncmp(startTag+1, "IF_NAME", endTag-startTag-1)) { char* startValue=NULL; char* endValue=NULL; int offset = 0; CWExtractValue(endTag, &startValue, &endValue, &offset); CW_CREATE_STRING_ERR(gInterfaceName, offset, return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY,NULL);); strncpy(gInterfaceName, startValue, offset); gInterfaceName[offset] ='\0'; CWLog(": %s", gInterfaceName); CW_FREE_OBJECT(line); continue; }
void CWResetPendingMsgBox(CWPendingRequestMessage *pendingRequestMsgs) { pendingRequestMsgs->msgType = UNUSED_MSG_TYPE; pendingRequestMsgs->seqNum = 0; pendingRequestMsgs->retransmission = 0; pendingRequestMsgs->timer_sec = 0; pendingRequestMsgs->timer_hdl = NULL; CW_FREE_OBJECT(pendingRequestMsgs->timer_arg); pendingRequestMsgs->timer_arg = NULL; timer_rem(pendingRequestMsgs->timer, NULL); int i; for(i=0; i<(pendingRequestMsgs->fragmentsNum); i++){ CW_FREE_PROTOCOL_MESSAGE((pendingRequestMsgs->msgElems)[i]); } CW_FREE_OBJECT(pendingRequestMsgs->msgElems); pendingRequestMsgs->fragmentsNum = 0; return; }
void CWACDestroy() { CWNetworkCloseMultiHomedSocket(&gACSocket); /* for(i = 0; i < CW_MAX_WTP; i++) { //CW_FREE_OBJECT(gWTPs[i].addr); } */ #ifndef CW_NO_DTLS CWSslCleanUp(); #endif CWDestroyThreadMutex(&gWTPsMutex); CWDestroyThreadMutex(&gCreateIDMutex); CWDestroyThreadMutex(&gActiveWTPsMutex); CW_FREE_OBJECT(gACName); CW_FREE_OBJECT(gInterfaces); CWLog("AC Destroyed"); }
void CWSslCleanUp() { int i; if (mutexOpensslBuf == NULL) return; for(i = 0; i < CRYPTO_num_locks(); i++) { CWDestroyThreadMutex(&mutexOpensslBuf[i]); } CW_FREE_OBJECT(mutexOpensslBuf); mutexOpensslBuf = NULL; return; }
void CWACStopRetransmission(int WTPIndex) { if (gWTPs[WTPIndex].isRetransmitting) { int i; CWDebugLog("Stop Retransmission"); gWTPs[WTPIndex].isRetransmitting = CW_FALSE; CWThreadSetSignals(SIG_BLOCK, 1, CW_SOFT_TIMER_EXPIRED_SIGNAL); if (!CWTimerCancel(&(gWTPs[WTPIndex].currentPacketTimer))) { CWDebugLog("Error Cancelling a Timer... possible error!"); } CWThreadSetSignals(SIG_UNBLOCK, 1, CW_SOFT_TIMER_EXPIRED_SIGNAL); gWTPs[WTPIndex].responseType = UNUSED_MSG_TYPE; gWTPs[WTPIndex].responseSeqNum = 0; for (i = 0; i < gWTPs[WTPIndex].messagesCount; i++) { CW_FREE_PROTOCOL_MESSAGE(gWTPs[WTPIndex].messages[i]); } CW_FREE_OBJECT(gWTPs[WTPIndex].messages); // CWDebugLog("~~~~~~ End of Stop Retransmission"); } }
/* * Manage Discovery State */ CWStateTransition CWWTPEnterDiscovery() { int i; CWBool j; CWLog("\n"); CWLog("######### Discovery State #########"); /* reset Discovery state */ gCWDiscoveryCount = 0; CWNetworkCloseSocket(gWTPSocket); if (!CWErr(CWNetworkInitSocketClient(&gWTPSocket, NULL))) { return CW_QUIT; } /* * note: gCWACList can be freed and reallocated (reading from config file) * at each transition to the discovery state to save memory space */ for (i = 0; i < gCWACCount; i++) gCWACList[i].received = CW_FALSE; /* wait a random time */ sleep(CWRandomIntInRange(gCWDiscoveryInterval, gCWMaxDiscoveryInterval)); CW_REPEAT_FOREVER { CWBool sentSomething = CW_FALSE; /* we get no responses for a very long time */ if (gCWDiscoveryCount == gCWMaxDiscoveries) return CW_ENTER_SULKING; /* send Requests to one or more ACs */ for (i = 0; i < gCWACCount; i++) { /* if this AC hasn't responded to us... */ if (!(gCWACList[i].received)) { /* ...send a Discovery Request */ CWProtocolMessage *msgPtr = NULL; /* get sequence number (and increase it) */ gCWACList[i].seqNum = CWGetSeqNum(); if (!CWErr(CWAssembleDiscoveryRequest(&msgPtr, gCWACList[i].seqNum))) { exit(1); } CW_CREATE_OBJECT_ERR(gACInfoPtr, CWACInfoValues, return CW_QUIT; ); CWNetworkGetAddressForHost(gCWACList[i].address, &(gACInfoPtr->preferredAddress)); CWUseSockNtop(&(gACInfoPtr->preferredAddress), CWDebugLog(str); ); j = CWErr(CWNetworkSendUnsafeUnconnected(gWTPSocket, &(gACInfoPtr->preferredAddress), (*msgPtr).msg, (*msgPtr).offset)); /* * log eventual error and continue * CWUseSockNtop(&(gACInfoPtr->preferredAddress), * CWLog("WTP sends Discovery Request to: %s", str);); */ CW_FREE_PROTOCOL_MESSAGE(*msgPtr); CW_FREE_OBJECT(msgPtr); CW_FREE_OBJECT(gACInfoPtr); /* * we sent at least one Request in this loop * (even if we got an error sending it) */ sentSomething = CW_TRUE; }
CWBool ACEnterRun(int WTPIndex, CWProtocolMessage *msgPtr, CWBool dataFlag) { CWBool toSend = CW_FALSE, timerSet = CW_TRUE; CWControlHeaderValues controlVal; CWProtocolMessage* messages = NULL; int messagesCount = 0; unsigned char StationMacAddr[MAC_ADDR_LEN]; char string[10]; char socketctl_path_name[50]; char socketserv_path_name[50]; msgPtr->offset = 0; // cancel NeighborDeadTimer timer CWStopNeighborDeadTimer(WTPIndex); timerSet = CW_FALSE; if (dataFlag) { /* We have received a Data Message... now just log this event and do actions by the dataType */ CWLog("--> Received a DATA Message"); if (msgPtr->data_msgType == CW_DATA_MSG_FRAME_TYPE) { /*Retrive mac address station from msg*/ memset(StationMacAddr, 0, MAC_ADDR_LEN); memcpy(StationMacAddr, msgPtr->msg + SOURCE_ADDR_START, MAC_ADDR_LEN); int seqNum = CWGetSeqNum(); //Send a Station Configuration Request if (CWAssembleStationConfigurationRequest(&(gWTPs[WTPIndex].messages), &(gWTPs[WTPIndex].messagesCount), gWTPs[WTPIndex].pathMTU, seqNum, StationMacAddr)) { if (CWACSendAcknowledgedPacket(WTPIndex, CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE, seqNum)) return CW_TRUE; else CWACStopRetransmission(WTPIndex); } } else { /************************************************************ * Update 2009: * * Manage special data packets with frequency * * statistics informations. * ************************************************************/ if (msgPtr->data_msgType == CW_DATA_MSG_FREQ_STATS_TYPE) { int cells; /* How many cell are heard */ int isAck; char * freqPayload; int socketIndex, indexToSend = htonl(WTPIndex); int sizeofAckInfoUnit = CW_FREQ_ACK_SIZE; int sizeofFreqInfoUnit = CW_FREQ_CELL_INFO_PAYLOAD_SIZE; int sizeOfPayload = 0, payload_offset = 0; /*----------------------------------------------------------------------------------------------- * Payload Management ( infos for frequency application) : * Ack Structure : | WTPIndex | Ack Value | * Freq Info Structure : | WTPIndex | Number of cells | Frequecies Info Payload | *-----------------------------------------------------------------------------------------------*/ memcpy(&isAck, msgPtr->msg, sizeof(int)); isAck = ntohl(isAck); if (isAck == 0) { /* isnt an ack message */ memcpy(&cells, msgPtr->msg + sizeof(int), sizeof(int)); cells = ntohl(cells); sizeOfPayload = (cells * sizeofFreqInfoUnit) + (2 * sizeof(int)); } else { sizeOfPayload = sizeofAckInfoUnit; } if ((freqPayload = malloc(sizeOfPayload)) != NULL) { memset(freqPayload, 0, sizeOfPayload); memcpy(freqPayload, &indexToSend, sizeof(int)); payload_offset += sizeof(int); if (isAck == 0) { memcpy(freqPayload + payload_offset, msgPtr->msg + sizeof(int), sizeOfPayload - payload_offset); } else { memcpy(freqPayload + payload_offset, msgPtr->msg + sizeof(int), sizeOfPayload - payload_offset); } socketIndex = gWTPs[WTPIndex].applicationIndex; /**************************************************** * Forward payload to correct application * ****************************************************/ if (!CWErr(CWThreadMutexLock(&appsManager.socketMutex[socketIndex]))) { CWLog("[ACrunState]:: Error locking socket Application Mutex"); free(freqPayload); return CW_FALSE; } if (Writen(appsManager.appSocket[socketIndex], freqPayload, sizeOfPayload) < 0) { CWThreadMutexUnlock(&appsManager.socketMutex[socketIndex]); free(freqPayload); CWLog("[ACrunState]:: Error writing Message To Application"); return CW_FALSE; } CWThreadMutexUnlock(&appsManager.socketMutex[socketIndex]); free(freqPayload); } else CWLog("[ACrunState]:: Malloc error (payload to frequency application"); } if (msgPtr->data_msgType == CW_DATA_MSG_STATS_TYPE) { if (!UnixSocksArray[WTPIndex].data_stats_sock) { //Init Socket only the first time when the function is called if ((UnixSocksArray[WTPIndex].data_stats_sock = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) { CWDebugLog("Error creating socket for data send"); return CW_FALSE; } memset(&(UnixSocksArray[WTPIndex].clntaddr), (int) NULL, sizeof(UnixSocksArray[WTPIndex].clntaddr)); UnixSocksArray[WTPIndex].clntaddr.sun_family = AF_UNIX; //make unix socket client path name by index i snprintf(string, sizeof(string), "%d", WTPIndex); string[sizeof(string) - 1] = 0; strcpy(socketctl_path_name, SOCKET_PATH_AC); strcat(socketctl_path_name, string); strcpy(UnixSocksArray[WTPIndex].clntaddr.sun_path, socketctl_path_name); unlink(socketctl_path_name); memset(&(UnixSocksArray[WTPIndex].servaddr), (int) NULL, sizeof(UnixSocksArray[WTPIndex].servaddr)); UnixSocksArray[WTPIndex].servaddr.sun_family = AF_UNIX; //make unix socket server path name by index i strcpy(socketserv_path_name, SOCKET_PATH_RECV_AGENT); strcat(socketserv_path_name, string); strcpy(UnixSocksArray[WTPIndex].servaddr.sun_path, socketserv_path_name); CWDebugLog("%s\t%s", socketserv_path_name, socketctl_path_name); //fflush(stdout); } int nbytes; int totalBytesToSend = 0; bcopy((char*) msgPtr->msg, (char*) &totalBytesToSend, sizeof(unsigned int)); totalBytesToSend = ntohl(totalBytesToSend); int pDataLen = totalBytesToSend; //len of Monitoring Data //CWDebugLog("\n%s\t%s", socketserv_path_name, socketctl_path_name); CWDebugLog("Total bytes to send %d", totalBytesToSend); //Send data stats from AC thread to monitor client over unix socket nbytes = sendto(UnixSocksArray[WTPIndex].data_stats_sock, msgPtr->msg, pDataLen, 0, (struct sockaddr *) &(UnixSocksArray[WTPIndex].servaddr), sizeof(UnixSocksArray[WTPIndex].servaddr)); if (nbytes < 0) { CWDebugLog("Error sending data over socket"); perror("send error"); return CW_FALSE; } } } return CW_TRUE; } if (!(CWACParseGenericRunMessage(WTPIndex, msgPtr, &controlVal))) { /* Two possible errors: WRONG_ARG and INVALID_FORMAT * In the second case we have an unexpected response: ignore the * message and log the event. */ return CW_FALSE; } switch (controlVal.messageTypeValue) { case CW_MSG_TYPE_VALUE_CONFIGURE_UPDATE_RESPONSE: { CWProtocolResultCode resultCode; /*Update 2009: Store Protocol specific response data*/ CWProtocolVendorSpecificValues* protocolValues = NULL; if (!(CWParseConfigurationUpdateResponseMessage(msgPtr, controlVal.msgElemsLen, &resultCode, &protocolValues))) return CW_FALSE; CWACStopRetransmission(WTPIndex); if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWDebugLog("CWRestartNeighborDeadTimer returned false"); CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWDebugLog("CWStartNeighborDeadTimer returned false"); CWCloseThread(); } } //CWSaveConfigurationUpdateResponseMessage(resultCode, WTPIndex, protocolValues); if (resultCode == CW_PROTOCOL_SUCCESS) { CWDebugLog("Result Success for Configuration update!!"); //gWTPs[WTPIndex].isRequestClose = CW_TRUE; //CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceWait); } /*if (gWTPs[WTPIndex].interfaceCommandProgress == CW_TRUE) { CWThreadMutexLock(&gWTPs[WTPIndex].interfaceMutex); gWTPs[WTPIndex].interfaceResult = 1; gWTPs[WTPIndex].interfaceCommandProgress = CW_FALSE; CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceComplete); CWThreadMutexUnlock(&gWTPs[WTPIndex].interfaceMutex); }*/ break; } case CW_MSG_TYPE_VALUE_CHANGE_STATE_EVENT_REQUEST: { CWProtocolChangeStateEventRequestValues *valuesPtr; if (!(CWParseChangeStateEventRequestMessage2(msgPtr, controlVal.msgElemsLen, &valuesPtr))) return CW_FALSE; if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } if (!(CWSaveChangeStateEventRequestMessage(valuesPtr, &(gWTPs[WTPIndex].WTPProtocolManager)))) return CW_FALSE; if (!(CWAssembleChangeStateEventResponse(&messages, &messagesCount, gWTPs[WTPIndex].pathMTU, controlVal.seqNum))) return CW_FALSE; toSend = CW_TRUE; break; } case CW_MSG_TYPE_VALUE_ECHO_REQUEST: { if (!(CWParseEchoRequestMessage(msgPtr, controlVal.msgElemsLen))) return CW_FALSE; if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } if (!(CWAssembleEchoResponse(&messages, &messagesCount, gWTPs[WTPIndex].pathMTU, controlVal.seqNum))) return CW_FALSE; toSend = CW_TRUE; break; } case CW_MSG_TYPE_VALUE_STATION_CONFIGURATION_RESPONSE: { CWProtocolResultCode resultCode; if (!(CWParseStationConfigurationResponseMessage(msgPtr, controlVal.msgElemsLen, &resultCode))) return CW_FALSE; CWACStopRetransmission(WTPIndex); if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } //CWSaveStationConfigurationResponseMessage(resultCode, WTPIndex); <-- Must be Implemented ???? break; } case CW_MSG_TYPE_VALUE_CLEAR_CONFIGURATION_RESPONSE: { CWProtocolResultCode resultCode; if (!(CWParseClearConfigurationResponseMessage(msgPtr, controlVal.msgElemsLen, &resultCode))) return CW_FALSE; CWACStopRetransmission(WTPIndex); if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } if (gWTPs[WTPIndex].interfaceCommandProgress == CW_TRUE) { CWThreadMutexLock(&gWTPs[WTPIndex].interfaceMutex); gWTPs[WTPIndex].interfaceResult = 1; gWTPs[WTPIndex].interfaceCommandProgress = CW_FALSE; CWSignalThreadCondition(&gWTPs[WTPIndex].interfaceComplete); CWThreadMutexUnlock(&gWTPs[WTPIndex].interfaceMutex); } break; } case CW_MSG_TYPE_VALUE_DATA_TRANSFER_REQUEST: { CWProtocolWTPDataTransferRequestValues valuesPtr; if (!(CWParseWTPDataTransferRequestMessage(msgPtr, controlVal.msgElemsLen, &valuesPtr))) return CW_FALSE; if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } if (!(CWAssembleWTPDataTransferResponse(&messages, &messagesCount, gWTPs[WTPIndex].pathMTU, controlVal.seqNum))) return CW_FALSE; toSend = CW_TRUE; break; } case CW_MSG_TYPE_VALUE_WTP_EVENT_REQUEST: { CWProtocolWTPEventRequestValues valuesPtr; if (!(CWParseWTPEventRequestMessage(msgPtr, controlVal.msgElemsLen, &valuesPtr))) return CW_FALSE; if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } if (!(CWSaveWTPEventRequestMessage(&valuesPtr, &(gWTPs[WTPIndex].WTPProtocolManager)))) return CW_FALSE; if (!(CWAssembleWTPEventResponse(&messages, &messagesCount, gWTPs[WTPIndex].pathMTU, controlVal.seqNum))) return CW_FALSE; toSend = CW_TRUE; break; } default: /* * We have an unexpected request and we have to send * a corresponding response containing a failure result code */ CWLog("--> Not valid Request in Run State... we send a failure Response"); if (timerSet) { if (!CWRestartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } else { if (!CWStartNeighborDeadTimer(WTPIndex)) { CWCloseThread(); } } if (!(CWAssembleUnrecognizedMessageResponse(&messages, &messagesCount, gWTPs[WTPIndex].pathMTU, controlVal.seqNum, controlVal.messageTypeValue + 1))) return CW_FALSE; toSend = CW_TRUE; /*return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Message not valid in Run State");*/ } if (toSend) { int i; CWDebugLog("There is something so send..."); if (messages == NULL) return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL); for (i = 0; i < messagesCount; i++) { #ifdef CW_NO_DTLS if(!CWNetworkSendUnsafeUnconnected(gWTPs[WTPIndex].socket, &gWTPs[WTPIndex].address, messages[i].msg, messages[i].offset) ) { #else if (!(CWSecuritySend(gWTPs[WTPIndex].session, messages[i].msg, messages[i].offset))) { #endif CWFreeMessageFragments(messages, messagesCount); CW_FREE_OBJECT(messages); return CW_FALSE; } } CWFreeMessageFragments(messages, messagesCount); CW_FREE_OBJECT(messages); } gWTPs[WTPIndex].currentState = CW_ENTER_RUN; gWTPs[WTPIndex].subState = CW_WAITING_REQUEST; CWDebugLog("Coming out of ACEnterRun.."); return CW_TRUE; } CWBool CWACParseGenericRunMessage(int WTPIndex, CWProtocolMessage *msg, CWControlHeaderValues* controlVal) { if (msg == NULL || controlVal == NULL) return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL); if (!(CWParseControlHeader(msg, controlVal))) /* will be handled by the caller */ return CW_FALSE; /* skip timestamp */ controlVal->msgElemsLen -= CW_CONTROL_HEADER_OFFSET_FOR_MSG_ELEMS; /* Check if it is a request */ if (controlVal->messageTypeValue % 2 == 1) { return CW_TRUE; } if ((gWTPs[WTPIndex].responseSeqNum != controlVal->seqNum) || (gWTPs[WTPIndex].responseType != controlVal->messageTypeValue)) { CWDebugLog("gWTPs: %d\n", gWTPs[WTPIndex].responseSeqNum); CWDebugLog("controlVal: %d\n", controlVal->seqNum); CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Seq Num or Msg Type not valid!"); return CW_FALSE; } return CW_TRUE; } /*Update 2009: Added vendValues to include a response payload (to pass response data)*/ CWBool CWParseConfigurationUpdateResponseMessage(CWProtocolMessage* msgPtr, int len, CWProtocolResultCode* resultCode, CWProtocolVendorSpecificValues** vendValues) { int offsetTillMessages; if (msgPtr == NULL || resultCode == NULL) return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL); if ((msgPtr->msg) == NULL) return CWErrorRaise(CW_ERROR_WRONG_ARG, NULL); offsetTillMessages = msgPtr->offset; CWLog("Parsing Configuration Update Response..."); /* parse message elements */ while ((msgPtr->offset - offsetTillMessages) < len) { unsigned short int elemType = 0; unsigned short int elemLen = 0; CWParseFormatMsgElem(msgPtr, &elemType, &elemLen); switch (elemType) { case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE: *resultCode = CWProtocolRetrieve32(msgPtr); break; /*Update 2009: Added case to implement conf update response with payload*/ case CW_MSG_ELEMENT_RESULT_CODE_CW_TYPE_WITH_PAYLOAD: { int payloadSize = 0; CW_CREATE_OBJECT_ERR(*vendValues, CWProtocolVendorSpecificValues, return CWErrorRaise(CW_ERROR_OUT_OF_MEMORY, NULL);); *resultCode = CWProtocolRetrieve32(msgPtr); if (CWProtocolRetrieve16(msgPtr) != CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_CW_TYPE) /*For now, we only have UCI payloads, so we will accept only vendor payloads for protocol data*/ return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Unrecognized Message Element in Configuration Update Response"); (*vendValues)->vendorPayloadType = CWProtocolRetrieve16(msgPtr); switch ((*vendValues)->vendorPayloadType) { case CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_UCI: payloadSize = CWProtocolRetrieve32(msgPtr); if (payloadSize != 0) { (*vendValues)->payload = (void *) CWProtocolRetrieveStr(msgPtr, payloadSize); } else (*vendValues)->payload = NULL; break; case CW_MSG_ELEMENT_VENDOR_SPEC_PAYLOAD_WUM: payloadSize = CWProtocolRetrieve32(msgPtr); if (payloadSize <= 0) { /* Payload can't be zero here, * at least the message type must be specified */ return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Unrecognized Message Element in Configuration Update Response"); } (*vendValues)->payload = (void *) CWProtocolRetrieveRawBytes(msgPtr, payloadSize); break; default: return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Unrecognized Message Element in Configuration Update Response"); break; } } break; default: return CWErrorRaise(CW_ERROR_INVALID_FORMAT, "Unrecognized Message Element in Configuration Update Response"); break; } }
void CWNetworkDeleteMHInterface(void *intPtr) { CW_FREE_OBJECT(intPtr); }
CWBool CWWTPSendAcknowledgedPacket(int seqNum, CWList msgElemlist, CWBool (assembleFunc)(CWProtocolMessage **, int *, int, int, CWList), CWBool (parseFunc)(char*, int, int, void*), CWBool (saveFunc)(void*), void *valuesPtr) { CWProtocolMessage *messages = NULL; CWProtocolMessage msg; int fragmentsNum = 0, i; struct timespec timewait; int gTimeToSleep = gCWRetransmitTimer; int gMaxTimeToSleep = CW_ECHO_INTERVAL_DEFAULT/2; msg.msg = NULL; if(!(assembleFunc(&messages, &fragmentsNum, gWTPPathMTU, seqNum, msgElemlist))) { goto cw_failure; } gWTPRetransmissionCount= 0; while(gWTPRetransmissionCount < gCWMaxRetransmit) { CWDebugLog("Transmission Num:%d", gWTPRetransmissionCount); for(i = 0; i < fragmentsNum; i++) { #ifdef CW_NO_DTLS if(!CWNetworkSendUnsafeConnected(gWTPSocket, messages[i].msg, messages[i].offset)) #else if(!CWSecuritySend(gWTPSession, messages[i].msg, messages[i].offset)) #endif { CWDebugLog("Failure sending Request"); goto cw_failure; } } timewait.tv_sec = time(0) + gTimeToSleep; timewait.tv_nsec = 0; CW_REPEAT_FOREVER { CWThreadMutexLock(&gInterfaceMutex); if (CWGetCountElementFromSafeList(gPacketReceiveList) > 0) CWErrorRaise(CW_ERROR_SUCCESS, NULL); else { if (CWErr(CWWaitThreadConditionTimeout(&gInterfaceWait, &gInterfaceMutex, &timewait))) CWErrorRaise(CW_ERROR_SUCCESS, NULL); } CWThreadMutexUnlock(&gInterfaceMutex); switch(CWErrorGetLastErrorCode()) { case CW_ERROR_TIME_EXPIRED: { gWTPRetransmissionCount++; goto cw_continue_external_loop; break; } case CW_ERROR_SUCCESS: { /* there's something to read */ if(!(CWReceiveMessage(&msg))) { CW_FREE_PROTOCOL_MESSAGE(msg); CWDebugLog("Failure Receiving Response"); goto cw_failure; } if(!(parseFunc(msg.msg, msg.offset, seqNum, valuesPtr))) { if(CWErrorGetLastErrorCode() != CW_ERROR_INVALID_FORMAT) { CW_FREE_PROTOCOL_MESSAGE(msg); CWDebugLog("Failure Parsing Response"); goto cw_failure; } else { CWErrorHandleLast(); { gWTPRetransmissionCount++; goto cw_continue_external_loop; } break; } } if((saveFunc(valuesPtr))) { goto cw_success; } else { if(CWErrorGetLastErrorCode() != CW_ERROR_INVALID_FORMAT) { CW_FREE_PROTOCOL_MESSAGE(msg); CWDebugLog("Failure Saving Response"); goto cw_failure; } } break; } case CW_ERROR_INTERRUPTED: { gWTPRetransmissionCount++; goto cw_continue_external_loop; break; } default: { CWErrorHandleLast(); CWDebugLog("Failure"); goto cw_failure; break; } } } cw_continue_external_loop: CWDebugLog("Retransmission time is over"); gTimeToSleep<<=1; if ( gTimeToSleep > gMaxTimeToSleep ) gTimeToSleep = gMaxTimeToSleep; } /* too many retransmissions */ return CWErrorRaise(CW_ERROR_NEED_RESOURCE, "Peer Dead"); cw_success: for(i = 0; i < fragmentsNum; i++) { CW_FREE_PROTOCOL_MESSAGE(messages[i]); } CW_FREE_OBJECT(messages); CW_FREE_PROTOCOL_MESSAGE(msg); return CW_TRUE; cw_failure: if(messages != NULL) { for(i = 0; i < fragmentsNum; i++) { CW_FREE_PROTOCOL_MESSAGE(messages[i]); } CW_FREE_OBJECT(messages); } CWDebugLog("Failure"); return CW_FALSE; }
CWBool CWWTPCheckForBindingFrame() { // CWLockSafeList(gFrameList); while (CWGetCountElementFromSafeList(gFrameList) > 0) { CWBindingDataListElement* dataFirstElem = CWRemoveHeadElementFromSafeList(gFrameList, NULL); if (dataFirstElem) { int k; int fragmentsNum = 0; CWProtocolMessage *completeMsgPtr = NULL; if (!CWAssembleDataMessage(&completeMsgPtr, &fragmentsNum, gWTPPathMTU, dataFirstElem->frame, dataFirstElem->bindingValues, #ifdef CW_NO_DTLS CW_PACKET_PLAIN #else (gDtlsSecurity == 1)?CW_PACKET_CRYPT:CW_PACKET_PLAIN /* 0-CW_PACKET_PLAIN, 1-CW_PACKET_CRYPT */ #endif )) { for(k = 0; k < fragmentsNum; k++) { CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]); } CW_FREE_OBJECT(completeMsgPtr); CW_FREE_PROTOCOL_MESSAGE(*(dataFirstElem->frame)); CW_FREE_OBJECT(dataFirstElem->frame); CW_FREE_OBJECT(dataFirstElem->bindingValues); CW_FREE_OBJECT(dataFirstElem); continue; } for (k = 0; k < fragmentsNum; k++) { #ifndef CW_NO_DTLS if(gDtlsSecurity == 1) { if (!CWSecuritySend(gWTPSession, completeMsgPtr[k].msg, completeMsgPtr[k].offset)) { CWDebugLog("Failure sending Request"); break; //gzm break don't unlockSafeList ??? } } else #endif { if (!CWNetworkSendUnsafeUnconnected(gWTPSocket, &(gACInfoPtr->preferredAddress), completeMsgPtr[k].msg, completeMsgPtr[k].offset)) { CWDebugLog("Failure sending Request"); break; //gzm break don't unlockSafeList ??? } } } for (k = 0; k < fragmentsNum; k++) { CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]); } CW_FREE_OBJECT(completeMsgPtr); CW_FREE_PROTOCOL_MESSAGE(*(dataFirstElem->frame)); CW_FREE_OBJECT(dataFirstElem->frame); CW_FREE_OBJECT(dataFirstElem->bindingValues); CW_FREE_OBJECT(dataFirstElem); } } CWUnlockSafeList(gFrameList); return CW_TRUE; }
CW_THREAD_RETURN_TYPE CWACipc_with_ac_hostapd(void *arg){ int tmp_WTPIndex = -1; int len; int k; #if defined(LOCALUDP) struct sockaddr_un server; #else #if defined(USEIPV6) struct sockaddr_in6 server; #else struct sockaddr_in server; #endif #endif unsigned char buffer[2048]; int connect_ret; char cmd[10]; CWProtocolMessage* frame=NULL; CWNetworkLev4Address address; CWThreadSetSignals(SIG_BLOCK, 1, SIGALRM); #if defined(LOCALUDP) sock = socket(AF_UNIX, SOCK_DGRAM, 0); #elif defined(NETUDP) #if defined(USEIPV6) bzero(&server, sizeof(server)); sock = socket(AF_INET6,SOCK_DGRAM,IPPROTO_UDP); #else memset(&server, 0, sizeof(server)); sock = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP); #endif #else #if defined(USEIPV6) bzero(&server, sizeof(server)); sock = socket(AF_INET6,SOCK_SEQPACKET,IPPROTO_SCTP); #else memset(&server, 0, sizeof(server)); sock = socket(AF_INET,SOCK_SEQPACKET,IPPROTO_SCTP); #endif #endif if (sock < 0) { CWDebugLog("AC ipc HOSTAPD: Error creating socket"); EXIT_FRAME_THREAD(sock); } CWDebugLog("AC ipc HOSTAPD: Trying to connect to hostapd (AC)..."); #if defined(LOCALUDP) server.sun_family = AF_UNIX; strcpy(server.sun_path, gHostapd_unix_path); unlink(server.sun_path); connect_ret = bind(sock, (struct sockaddr *)&server, strlen(server.sun_path) + sizeof(server.sun_family)); #else #if defined(USEIPV6) server.sin6_family = AF_INET6; server.sin6_port = gHostapd_port; server.sin6_addr = in6addr_any; #else server.sin_family = AF_INET; server.sin_port = gHostapd_port; server.sin_addr.s_addr = INADDR_ANY; #endif connect_ret = bind(sock,(struct sockaddr *)&server,sizeof(server)); #endif if ( connect_ret == -1) { CWDebugLog("AC ipc HOSTAPD: Error connect to socket"); EXIT_FRAME_THREAD(sock); } #if defined(LOCALUDP) #elif defined(NETUDP) #else if (listen(sock, CW_MAX_WTP) < 0){ CWDebugLog("AC ipc HOSTAPD: Error listen "); EXIT_FRAME_THREAD(sock); } #endif int i=0; CWProtocolMessage *completeMsgPtr = NULL; int fragmentsNum = 0; CWMultiHomedSocket *sockPtr = &gACSocket; int dataSocket=0; #if defined(LOCALUDP) struct sockaddr_un client_tmp; client_tmp.sun_family = AF_UNIX; #else #if defined(USEIPV6) struct sockaddr_in6 client_tmp; #else struct sockaddr_in client_tmp; #endif #endif int address_size_tmp = sizeof(client_tmp); for(i=0; i<CW_MAX_WTP; i++){ ch[i].associated = 0; #if defined(LOCALUDP) ch[i].client.sun_family = AF_UNIX; ch[i].address_size = sizeof(struct sockaddr_un); #else #if defined(USEIPV6) ch[i].client.sin6_port = 0; #else ch[i].client.sin_port = 0; #endif #endif } #if defined(LOCALUDP) CWLog("Accept Packet at pipe: %s",gHostapd_unix_path); #elif defined(NETUDP) #if defined(USEIPV6) CWLog("Accept UDP v6 Packet at Port: %d",server.sin6_port); #else CWLog("Accept UDP v4 Packet at Port: %d",server.sin_port); #endif #else #if defined(USEIPV6) CWLog("Accept SCTP v6 Packet at Port: %d",server.sin6_port); #else CWLog("Accept SCTP v4 Packet at Port: %d",server.sin_port); #endif #endif CW_REPEAT_FOREVER { tmp_WTPIndex = -1; len = recvfrom(sock, buffer, 3000, 0, (struct sockaddr *)&client_tmp, &address_size_tmp); #if defined(LOCALUDP) sprintf(client_tmp.sun_path, "%s%c%c%c%c%c",server.sun_path, buffer[1],buffer[2],buffer[3],buffer[4],buffer[5]); #endif if(Exist_WTPs()==0){ send_close_cmd(client_tmp,sizeof(client_tmp)); continue; } if(len <= 0 ) { continue; /* EXIT_FRAME_THREAD(sock) */ } for( i=0; i<CW_MAX_WTP; i++){ #if defined(LOCALUDP) if( strcmp(client_tmp.sun_path,ch[i].client.sun_path)==0 ){ tmp_WTPIndex = i; break; } #else #if defined(USEIPV6) if( (client_tmp.sin6_port == ch[i].client.sin6_port) && (strncmp(client_tmp.sin6_addr.s6_addr,ch[i].client.sin6_addr.s6_addr,16)==0 )){ tmp_WTPIndex = i; } #else if( (client_tmp.sin_port == ch[i].client.sin_port) && (strcmp(inet_ntoa(client_tmp.sin_addr),inet_ntoa(ch[i].client.sin_addr))==0 )){ tmp_WTPIndex = i; } #endif #endif } if( tmp_WTPIndex<0 ){// Client not recognized int wtp_non_associated = GetWTP_not_associated_to_Hostapd (); if( wtp_non_associated >= 0){ if( buffer[0]==CONNECT ){ ch[wtp_non_associated].live = 0; ch[wtp_non_associated].start_set_fase = 0; ch[wtp_non_associated].associated = 1; ch[wtp_non_associated].client = client_tmp; ch[wtp_non_associated].address_size = address_size_tmp; cmd[0] = CONNECT_R; sendto(sock, cmd, 1, 0, (struct sockaddr *)&ch[wtp_non_associated].client, ch[wtp_non_associated].address_size); CWLog("wtp_non_associated:%d",wtp_non_associated); #if defined(LOCALUDP) CWLog("Hostapd_AC Connect: %s", ch[wtp_non_associated].client.sun_path); #else #if defined(USEIPV6) CWLog("Hostapd_AC (v6) Connect: %d", ch[wtp_non_associated].client.sin6_port); #else CWLog("Hostapd_AC (v4) Connect: %s:%d",inet_ntoa(ch[wtp_non_associated].client.sin_addr), ch[wtp_non_associated].client.sin_port); #endif #endif continue; }else{ send_close_cmd(client_tmp,sizeof(client_tmp)); continue; } }else{ send_close_cmd(client_tmp,sizeof(client_tmp)); continue; } }else{ // Client recognized int sig_byte = 1; #if defined(LOCALUDP) sig_byte = 6; //Code #endif if( buffer[0]==DATE_TO_WTP ){ if (gWTPs[tmp_WTPIndex].currentState != CW_ENTER_RUN){ CWDebugLog("AC %d is not in RUN State. The packet was dropped.",i); continue; }else if (len > (gWTPs[tmp_WTPIndex].pathMTU-20)){ CWDebugLog("802.11 data length(%d) > MTU(%d)",len, gWTPs[tmp_WTPIndex].pathMTU); continue; }else{ len = len - sig_byte; CW_CREATE_OBJECT_ERR(frame, CWProtocolMessage, return 0;); CW_CREATE_PROTOCOL_MESSAGE(*frame, len, return 0;); memcpy(frame->msg, buffer + sig_byte , len); frame->offset=len; frame->data_msgType = CW_IEEE_802_11_FRAME_TYPE; if (!CWAssembleDataMessage(&completeMsgPtr, &fragmentsNum, gWTPs[tmp_WTPIndex].pathMTU, frame, NULL, CW_PACKET_PLAIN, 0)){ for(k = 0; k < fragmentsNum; k++){ CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]); } CW_FREE_OBJECT(completeMsgPtr); CW_FREE_PROTOCOL_MESSAGE(*frame); CW_FREE_OBJECT(frame); continue; } for(k = 0; k < sockPtr->count; k++) { if (sockPtr->interfaces[k].sock == gWTPs[tmp_WTPIndex].socket){ dataSocket = sockPtr->interfaces[k].dataSock; CW_COPY_NET_ADDR_PTR(&address,&(gWTPs[tmp_WTPIndex].dataaddress)); break; } } if (dataSocket == 0){ CWDebugLog("data socket of WTP %d isn't ready."); continue; } for (k = 0; k < fragmentsNum; k++){ if(!CWNetworkSendUnsafeUnconnected( dataSocket, &(address),completeMsgPtr[k].msg,completeMsgPtr[k].offset)){ CWDebugLog("Failure sending Request"); break; } } for (k = 0; k < fragmentsNum; k++){ CW_FREE_PROTOCOL_MESSAGE(completeMsgPtr[k]); } CW_FREE_OBJECT(completeMsgPtr); CW_FREE_PROTOCOL_MESSAGE(*(frame)); CW_FREE_OBJECT(frame); } }else if( buffer[0]==SET_ADDR ){
void CWACInit() { int i; CWNetworkLev4Address *addresses = NULL; struct sockaddr_in *IPv4Addresses = NULL; CWLogInitFile(AC_LOG_FILE_NAME); #ifndef CW_SINGLE_THREAD CWDebugLog("Use Threads"); #else CWDebugLog("Don't Use Threads"); #endif CWErrorHandlingInitLib(); if (!CWParseSettingsFile()) { CWLog("Can't start AC"); exit(1); } CWLog("Starting AC"); CWThreadSetSignals(SIG_BLOCK, 1, SIGALRM); if (timer_init() == 0) { CWLog("Can't init timer module"); exit(1); } if (!CWErr(CWParseConfigFile()) || #ifndef CW_NO_DTLS !CWErr(CWSecurityInitLib()) || #endif !CWErr(CWNetworkInitSocketServerMultiHomed (&gACSocket, CW_CONTROL_PORT, gMulticastGroups, gMulticastGroupsCount)) || !CWErr(CWNetworkGetInterfaceAddresses(&gACSocket, &addresses, &IPv4Addresses)) || !CWErr(CWCreateThreadMutex(&gWTPsMutex)) || !CWErr(CWCreateThreadMutex(&gActiveWTPsMutex))) { /* error starting */ CWLog("Can't start AC"); exit(1); } #ifndef CW_NO_DTLS if (gACDescriptorSecurity == CW_X509_CERTIFICATE) { if (!CWErr(CWSecurityInitContext(&gACSecurityContext, "root.pem", "server.pem", "prova", CW_FALSE, CWACSemPostForOpenSSLHack))) { CWLog("Can't start AC"); exit(1); } } else { /* preshared */ if (!CWErr(CWSecurityInitContext(&gACSecurityContext, NULL, NULL, NULL, CW_FALSE, CWACSemPostForOpenSSLHack))) { CWLog("Can't start AC"); exit(1); } } #endif CW_FREE_OBJECTS_ARRAY(gMulticastGroups, gMulticastGroupsCount); for (i = 0; i < gMaxWTPs; i++) { gWTPs[i].isNotFree = CW_FALSE; if (!gWTPs[i].tap_fd) { init_AC_tap_interface(i); } } /* store network interface's addresses */ gInterfacesCount = CWNetworkCountInterfaceAddresses(&gACSocket); CWLog("Found %d Network Interface(s)", gInterfacesCount); if (gInterfacesCount <= 0) { CWLog("Can't start AC"); exit(1); } if (!(gInterfaces = ralloc_array(NULL, CWProtocolNetworkInterface, gInterfacesCount))) { CWLog("Out of Memory"); return; } for (i = 0; i < gInterfacesCount; i++) { gInterfaces[i].WTPCount = 0; CW_COPY_NET_ADDR_PTR(&(gInterfaces[i].addr), ((CWNetworkLev4Address *) & ((addresses)[i]))); if (IPv4Addresses != NULL) { CW_COPY_NET_ADDR_PTR(&(gInterfaces[i].addrIPv4), &((IPv4Addresses)[i])); } } CW_FREE_OBJECT(addresses); CW_FREE_OBJECT(IPv4Addresses); if (!CWErr(CWCreateThreadMutex(&gCreateIDMutex))) { exit(1); } CWLog("AC Started"); }