fsfw/osal/linux/TmTcUnixUdpBridge.cpp

158 lines
5.4 KiB
C++

#include "TmTcUnixUdpBridge.h"
#include "tcpipHelpers.h"
#include "../../serviceinterface/ServiceInterface.h"
#include "../../ipc/MutexGuard.h"
#include <arpa/inet.h>
#include <unistd.h>
#include <netdb.h>
#include <cstring>
//! Debugging preprocessor define.
#define FSFW_UDP_SEND_WIRETAPPING_ENABLED 0
const std::string TmTcUnixUdpBridge::DEFAULT_UDP_SERVER_PORT = tcpip::DEFAULT_UDP_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<int>(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<sockaddr*>(&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;
}