133 lines
3.6 KiB
C++
133 lines
3.6 KiB
C++
#include <framework/osal/linux/TmTcUnixUdpBridge.h>
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#include <framework/serviceinterface/ServiceInterfaceStream.h>
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#include <framework/ipc/MutexHelper.h>
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#include <errno.h>
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TmTcUnixUdpBridge::TmTcUnixUdpBridge(object_id_t objectId,
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object_id_t ccsdsPacketDistributor, uint16_t serverPort,
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uint16_t clientPort):
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TmTcBridge(objectId, ccsdsPacketDistributor) {
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mutex = MutexFactory::instance()->createMutex();
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uint16_t setServerPort = DEFAULT_UDP_SERVER_PORT;
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if(serverPort != 0xFFFF) {
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setServerPort = serverPort;
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}
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// uint16_t setClientPort = DEFAULT_UDP_CLIENT_PORT;
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// if(clientPort != 0xFFFF) {
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// setClientPort = clientPort;
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// }
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// Set up UDP socket: https://man7.org/linux/man-pages/man7/ip.7.html
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serverSocket = socket(AF_INET, SOCK_DGRAM, 0);
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if(socket < 0) {
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sif::error << "TmTcUnixUdpBridge::TmTcUnixUdpBridge: Could not open"
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" UDP socket!" << std::endl;
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handleSocketError();
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return;
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}
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serverAddress.sin_family = AF_INET;
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// Accept packets from any interface.
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serverAddress.sin_addr.s_addr = htonl(INADDR_ANY);
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serverAddress.sin_port = htons(setServerPort);
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setsockopt(serverSocket, SOL_SOCKET, SO_REUSEADDR, &serverSocketOptions,
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sizeof(serverSocketOptions));
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serverSocketLen = sizeof(serverAddress);
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int result = bind(serverSocket,
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reinterpret_cast<struct sockaddr*>(&serverAddress),
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serverSocketLen);
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if(result == -1) {
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sif::error << "TmTcUnixUdpBridge::TmTcUnixUdpBridge: Could not bind "
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"local port " << setServerPort << " to server socket!"
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<< std::endl;
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handleBindError();
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return;
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}
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}
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TmTcUnixUdpBridge::~TmTcUnixUdpBridge() {
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}
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ReturnValue_t TmTcUnixUdpBridge::sendTm(const uint8_t *data, size_t dataLen) {
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int flags = 0;
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ssize_t result = send(serverSocket, data, dataLen, flags);
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if(result < 0) {
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// todo: handle errors
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sif::error << "TmTcUnixUdpBridge::sendTm: Send operation failed "
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"with error " << strerror(errno) << std::endl;
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}
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return HasReturnvaluesIF::RETURN_OK;
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}
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void TmTcUnixUdpBridge::checkAndSetClientAddress(sockaddr_in newAddress) {
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MutexHelper lock(mutex, 10);
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// Set new IP address if it has changed.
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if(clientAddress.sin_addr.s_addr != newAddress.sin_addr.s_addr) {
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clientAddress.sin_addr.s_addr = newAddress.sin_addr.s_addr;
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}
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}
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void TmTcUnixUdpBridge::handleSocketError() {
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// See: https://man7.org/linux/man-pages/man2/socket.2.html
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switch(errno) {
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case(EACCES):
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case(EINVAL):
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case(EMFILE):
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case(ENFILE):
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case(EAFNOSUPPORT):
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case(ENOBUFS):
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case(ENOMEM):
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case(EPROTONOSUPPORT):
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sif::error << "TmTcUnixBridge::TmTcUnixBridge: Socket creation failed"
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<< " with " << strerror(errno) << std::endl;
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break;
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default:
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sif::error << "TmTcUnixBridge::TmTcUnixBridge: Unknown error"
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<< std::endl;
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break;
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}
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}
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void TmTcUnixUdpBridge::handleBindError() {
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// See: https://man7.org/linux/man-pages/man2/bind.2.html
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switch(errno) {
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case(EACCES): {
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/*
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Ephermeral ports can be shown with following command:
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sysctl -A | grep ip_local_port_range
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*/
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sif::error << "TmTcUnixBridge::TmTcUnixBridge: Port access issue."
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"Ports 1-1024 are reserved on UNIX systems and require root "
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"rights while ephermeral ports should not be used as well."
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<< std::endl;
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}
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break;
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case(EADDRINUSE):
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case(EBADF):
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case(EINVAL):
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case(ENOTSOCK):
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case(EADDRNOTAVAIL):
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case(EFAULT):
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case(ELOOP):
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case(ENAMETOOLONG):
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case(ENOENT):
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case(ENOMEM):
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case(ENOTDIR):
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case(EROFS): {
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sif::error << "TmTcUnixBridge::TmTcUnixBridge: Socket creation failed"
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<< " with " << strerror(errno) << std::endl;
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break;
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}
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default:
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sif::error << "TmTcUnixBridge::TmTcUnixBridge: Unknown error"
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<< std::endl;
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break;
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}
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}
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