125 lines
3.1 KiB
C++
Executable File
125 lines
3.1 KiB
C++
Executable File
/*
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* ebusd - daemon for communication with eBUS heating systems.
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* Copyright (C) 2015-2018 John Baier <ebusd@ebusd.eu>, Roland Jax 2012-2014 <ebusd@liwest.at>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "lib/utils/tcpsocket.h"
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#include <fcntl.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <string.h>
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#include <cstdlib>
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namespace ebusd {
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TCPSocket::TCPSocket(int sfd, socketaddress* address) : m_sfd(sfd) {
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char ip[17];
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inet_ntop(AF_INET, (struct in_addr*)&(address->sin_addr.s_addr), ip, (socklen_t)sizeof(ip)-1);
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m_ip = ip;
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m_port = (uint16_t)ntohs(address->sin_port);
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}
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bool TCPSocket::isValid() {
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return fcntl(m_sfd, F_GETFL) != -1;
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}
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TCPSocket* TCPClient::connect(const string& server, const uint16_t& port) {
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socketaddress address;
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int ret;
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memset(reinterpret_cast<char*>(&address), 0, sizeof(address));
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if (inet_addr(server.c_str()) == INADDR_NONE) {
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struct hostent* he;
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he = gethostbyname(server.c_str());
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if (he == NULL) {
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return NULL;
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}
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memcpy(&address.sin_addr, he->h_addr_list[0], he->h_length);
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} else {
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ret = inet_aton(server.c_str(), &address.sin_addr);
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if (ret == 0) {
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return NULL;
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}
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}
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address.sin_family = AF_INET;
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address.sin_port = (in_port_t)htons(port);
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int sfd = socket(AF_INET, SOCK_STREAM, 0);
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if (sfd < 0) {
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return NULL;
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}
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ret = ::connect(sfd, (struct sockaddr*) &address, sizeof(address));
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if (ret < 0) {
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return NULL;
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}
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return new TCPSocket(sfd, &address);
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}
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int TCPServer::start() {
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if (m_listening) {
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return 0;
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}
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m_lfd = socket(AF_INET, SOCK_STREAM, 0);
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socketaddress address;
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memset(&address, 0, sizeof(address));
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address.sin_family = AF_INET;
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address.sin_port = (in_port_t)htons(m_port);
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if (m_address.size() > 0) {
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inet_pton(AF_INET, m_address.c_str(), &(address.sin_addr));
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} else {
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address.sin_addr.s_addr = INADDR_ANY;
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}
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int optval = 1;
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setsockopt(m_lfd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
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int result = bind(m_lfd, (struct sockaddr*) &address, sizeof(address));
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if (result != 0) {
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return result;
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}
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result = listen(m_lfd, 5);
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if (result != 0) {
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return result;
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}
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m_listening = true;
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return result;
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}
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TCPSocket* TCPServer::newSocket() {
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if (!m_listening) {
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return NULL;
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}
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socketaddress address;
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socklen_t len = sizeof(address);
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memset(&address, 0, sizeof(address));
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int sfd = accept(m_lfd, (struct sockaddr*) &address, &len);
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if (sfd < 0) {
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return NULL;
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}
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return new TCPSocket(sfd, &address);
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}
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} // namespace ebusd
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