#include "TmTcUnixUdpBridge.h" #include "../common/tcpipHelpers.h" #include "../../serviceinterface/ServiceInterface.h" #include "../../ipc/MutexGuard.h" #include #include #include #include //! Debugging preprocessor define. #define FSFW_UDP_SEND_WIRETAPPING_ENABLED 0 const std::string TmTcUnixUdpBridge::DEFAULT_UDP_SERVER_PORT = tcpip::DEFAULT_SERVER_PORT; TmTcUnixUdpBridge::TmTcUnixUdpBridge(object_id_t objectId, object_id_t tcDestination, object_id_t tmStoreId, object_id_t tcStoreId, std::string udpServerPort): TmTcBridge(objectId, tcDestination, tmStoreId, tcStoreId) { if(udpServerPort == "") { this->udpServerPort = DEFAULT_UDP_SERVER_PORT; } else { this->udpServerPort = udpServerPort; } mutex = MutexFactory::instance()->createMutex(); communicationLinkUp = false; } ReturnValue_t TmTcUnixUdpBridge::initialize() { using namespace tcpip; ReturnValue_t result = TmTcBridge::initialize(); if(result != HasReturnvaluesIF::RETURN_OK) { #if FSFW_CPP_OSTREAM_ENABLED == 1 sif::error << "TmTcUnixUdpBridge::initialize: TmTcBridge initialization failed!" << std::endl; #endif return result; } struct addrinfo *addrResult = nullptr; struct addrinfo hints; std::memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET; hints.ai_socktype = SOCK_DGRAM; hints.ai_protocol = IPPROTO_UDP; hints.ai_flags = AI_PASSIVE; /* Set up UDP socket: https://man7.org/linux/man-pages/man3/getaddrinfo.3.html Passing nullptr as the first parameter and specifying AI_PASSIVE in hints will cause getaddrinfo to assign the address 0.0.0.0 (any address) */ int retval = getaddrinfo(nullptr, udpServerPort.c_str(), &hints, &addrResult); if (retval != 0) { #if FSFW_CPP_OSTREAM_ENABLED == 1 sif::warning << "TmTcWinUdpBridge::TmTcWinUdpBridge: Retrieving address info failed!" << std::endl; #endif return HasReturnvaluesIF::RETURN_FAILED; } /* Set up UDP socket: https://man7.org/linux/man-pages/man7/ip.7.html */ serverSocket = socket(addrResult->ai_family, addrResult->ai_socktype, addrResult->ai_protocol); if(serverSocket < 0) { #if FSFW_CPP_OSTREAM_ENABLED == 1 sif::error << "TmTcUnixUdpBridge::TmTcUnixUdpBridge: Could not open UDP socket!" << std::endl; #else sif::printError("TmTcUnixUdpBridge::TmTcUnixUdpBridge: Could not open UDP socket!\n"); #endif /* FSFW_CPP_OSTREAM_ENABLED == 1 */ freeaddrinfo(addrResult); handleError(Protocol::UDP, ErrorSources::SOCKET_CALL); return HasReturnvaluesIF::RETURN_FAILED; } retval = bind(serverSocket, addrResult->ai_addr, static_cast(addrResult->ai_addrlen)); if(retval != 0) { #if FSFW_CPP_OSTREAM_ENABLED == 1 sif::warning << "TmTcWinUdpBridge::TmTcWinUdpBridge: Could not bind " "local port (" << udpServerPort << ") to server socket!" << std::endl; #endif freeaddrinfo(addrResult); handleError(Protocol::UDP, ErrorSources::BIND_CALL); return HasReturnvaluesIF::RETURN_FAILED; } return HasReturnvaluesIF::RETURN_OK; } TmTcUnixUdpBridge::~TmTcUnixUdpBridge() { if(mutex != nullptr) { MutexFactory::instance()->deleteMutex(mutex); } close(serverSocket); } ReturnValue_t TmTcUnixUdpBridge::sendTm(const uint8_t *data, size_t dataLen) { int flags = 0; /* The target address can be set by different threads so this lock ensures thread-safety */ MutexGuard lock(mutex, timeoutType, mutexTimeoutMs); #if FSFW_CPP_OSTREAM_ENABLED == 1 && FSFW_UDP_SEND_WIRETAPPING_ENABLED == 1 char ipAddress [15]; sif::debug << "IP Address Sender: "<< inet_ntop(AF_INET,&clientAddress.sin_addr.s_addr, ipAddress, 15) << std::endl; #endif ssize_t bytesSent = sendto( serverSocket, data, dataLen, flags, reinterpret_cast(&clientAddress), clientAddressLen ); if(bytesSent < 0) { #if FSFW_CPP_OSTREAM_ENABLED == 1 sif::warning << "TmTcUnixUdpBridge::sendTm: Send operation failed." << std::endl; #endif tcpip::handleError(tcpip::Protocol::UDP, tcpip::ErrorSources::SENDTO_CALL); } #if FSFW_CPP_OSTREAM_ENABLED == 1 && FSFW_UDP_SEND_WIRETAPPING_ENABLED == 1 sif::debug << "TmTcUnixUdpBridge::sendTm: " << bytesSent << " bytes were" " sent." << std::endl; #endif return HasReturnvaluesIF::RETURN_OK; } void TmTcUnixUdpBridge::checkAndSetClientAddress(sockaddr_in& newAddress) { /* The target address can be set by different threads so this lock ensures thread-safety */ MutexGuard lock(mutex, timeoutType, mutexTimeoutMs); #if FSFW_CPP_OSTREAM_ENABLED == 1 && FSFW_UDP_RCV_WIRETAPPING_ENABLED == 1 char ipAddress [15]; sif::debug << "IP Address Sender: "<< inet_ntop(AF_INET, &newAddress.sin_addr.s_addr, ipAddress, 15) << std::endl; sif::debug << "IP Address Old: " << inet_ntop(AF_INET, &clientAddress.sin_addr.s_addr, ipAddress, 15) << std::endl; #endif registerCommConnect(); /* Set new IP address to reply to. */ clientAddress = newAddress; clientAddressLen = sizeof(clientAddress); } void TmTcUnixUdpBridge::setMutexProperties(MutexIF::TimeoutType timeoutType, dur_millis_t timeoutMs) { this->timeoutType = timeoutType; this->mutexTimeoutMs = timeoutMs; }