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Diffstat (limited to 'low-can-binding/utils/socketcan.cpp')
-rw-r--r-- | low-can-binding/utils/socketcan.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/low-can-binding/utils/socketcan.cpp b/low-can-binding/utils/socketcan.cpp new file mode 100644 index 00000000..71588a6e --- /dev/null +++ b/low-can-binding/utils/socketcan.cpp @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2015, 2016 ,2017 "IoT.bzh" + * Author "Romain Forlot" <romain.forlot@iot.bzh> + * Author "Loïc Collignon" <loic.collignon@iot.bzh> + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <unistd.h> +#include <string> +#include <linux/can/raw.h> +#include <net/if.h> +#include <sys/ioctl.h> + +#include "socketcan.hpp" + +namespace utils +{ + + /// @brief Construct a default, invalid, socket. + socketcan_t::socketcan_t() + : socket_{INVALID_SOCKET} + {} + + /// @brief Construct a socket by moving an existing one. + socketcan_t::socketcan_t(socketcan_t&& s) + : socket_{s.socket_} + { + ::memset(&tx_address_, 0, sizeof(tx_address_)); + } + + socketcan_t& socketcan_t::operator=(const socketcan_t& s) + { + socket_ = std::move(s.socket_); + return *this; + } + + socketcan_t::~socketcan_t() + { + close(); + socket_ = INVALID_SOCKET; + } + + const struct sockaddr_can& socketcan_t::get_tx_address() const + { + return tx_address_; + } + + /// @brief Test if socket is valid. + /// @return true if valid, false otherwise. + socketcan_t::operator bool() const + { + return socket_ != INVALID_SOCKET; + } + + /// @brief Open the socket. + /// @param[in] domain Specifies the communications domain in which a socket is to be created. + /// @param[in] type Specifies the type of socket to be created. + /// @param[in] protocol Specifies a particular protocol to be used with the socket. Specifying a protocol of 0 causes socket() to use an unspecified default protocol appropriate for the requested socket type. + /// @return Upon successful completion, shall return a non-negative integer, the socket file descriptor. Otherwise, a value of -1 shall be returned and errno set to indicate the error. + int socketcan_t::open(int domain, int type, int protocol) + { + close(); + socket_ = ::socket(domain, type, protocol); + return socket_; + } + + /// @brief Close the socket. + /// @return 0 if success. + int socketcan_t::close() + { + return socket_ != INVALID_SOCKET ? ::close(socket_) : 0; + } + + /// @brief Set socket option. + /// @return 0 if success. + int socketcan_t::setopt(int level, int optname, const void* optval, socklen_t optlen) + { + return socket_ != INVALID_SOCKET ? ::setsockopt(socket_, level, optname, optval, optlen) : 0; + } + + /// @brief Get the file descriptor. + /// @return The socket's file descriptor + int socketcan_t::socket() const + { + return socket_; + } +}
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