Tom Early
6 years ago
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2a447d89f6
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/*
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* Copyright (C) 2020 by Thomas Early N7TAE
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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 2 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <iostream>
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#include <unistd.h>
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#include <sys/un.h>
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#include <sys/socket.h>
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#include "UnixPacketSock.h"
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CUnixPacket::CUnixPacket() : m_fd(-1) {}
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ssize_t CUnixPacket::Read(void *data, const ssize_t size)
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{
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return read(m_fd, data, size);
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}
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bool CUnixPacket::Write(const void *data, const ssize_t size) const
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{
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ssize_t written = write(m_fd, data, size);
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if (written != size) {
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std::cout << "CUnixPacketServer::Write ERROR: only wrote " << written << " of " << size << " bytes" << std::endl;
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return true;
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}
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return false;
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}
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int CUnixPacket::GetFD()
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{
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return m_fd;
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}
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CUnixPacketServer::CUnixPacketServer() : m_server(-1) {}
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CUnixPacketServer::~CUnixPacketServer()
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{
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Close();
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}
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bool CUnixPacketServer::Open(const char *name)
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{
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m_server = socket(AF_UNIX, SOCK_SEQPACKET, 0);
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if (m_server < 0) {
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std::cerr << "Cannot open " << name << " Unix server socket!" << std::endl;
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return true;
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}
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struct sockaddr_un addr;
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memset(&addr, 0, sizeof(addr));
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addr.sun_family = AF_UNIX;
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memcpy(addr.sun_path+1, name, strlen(name));
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if (-1 == bind(m_server, (struct sockaddr *)&addr, sizeof(addr))) {
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std::cerr << "Cannot bind " << name << "Unix server socket!" << std::endl;
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Close();
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return true;
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}
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if (-1 == listen(m_server, 1)) {
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std::cerr << "Cannot listen on " << name << "Unix server socket!" << std::endl;
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Close();
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return true;
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}
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m_fd = accept(m_server, nullptr, 0);
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if (m_fd < 0) {
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std::cerr << "Cannot accept on " << name << "Unix server socket!" << std::endl;
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Close();
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return true;
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}
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return false;
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}
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void CUnixPacketServer::Close()
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{
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if (m_server >= 0) {
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close(m_server);
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m_server = -1;
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}
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if (m_fd >= 0) {
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close(m_fd);
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m_fd = -1;
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}
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}
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CUnixPacketClient::~CUnixPacketClient()
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{
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Close();
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}
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bool CUnixPacketClient::Open(const char *name)
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{
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m_fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
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if (m_fd < 0) {
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std::cerr << "Cannot open " << name << " Unix client socket!" << std::endl;
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return true;
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}
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struct sockaddr_un addr;
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memset(&addr, 0, sizeof(addr));
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addr.sun_family = AF_UNIX;
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memcpy(addr.sun_path+1, name, strlen(name));
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if (-1 == connect(m_fd, (struct sockaddr *)&addr, sizeof(addr))) {
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std::cerr << "Cannot connect " << name << "Unix client socket!" << std::endl;
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Close();
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return true;
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}
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return false;
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}
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void CUnixPacketClient::Close()
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{
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if (m_fd >= 0) {
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close(m_fd);
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m_fd = -1;
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}
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}
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@ -0,0 +1,50 @@
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#pragma once
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/*
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* Copyright (C) 2020 by Thomas Early N7TAE
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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 2 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <sys/types.h>
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class CUnixPacket {
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public:
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CUnixPacket();
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virtual bool Open(const char *name) = 0;
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virtual void Close() = 0;
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bool Write(const void *buffer, const ssize_t size) const;
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ssize_t Read(void *buffer, const ssize_t size);
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int GetFD();
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protected:
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int m_fd;
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};
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class CUnixPacketServer : public CUnixPacket {
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public:
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CUnixPacketServer();
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~CUnixPacketServer();
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bool Open(const char *name);
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void Close();
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protected:
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int m_server;
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};
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class CUnixPacketClient : public CUnixPacket {
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public:
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~CUnixPacketClient();
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bool Open(const char *name);
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void Close();
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};
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