/Src/Dependencies/Boost/boost/asio/local/detail/impl/endpoint.ipp

  1//
  2// local/detail/impl/endpoint.hpp
  3// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  4//
  5// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  6// Derived from a public domain implementation written by Daniel Casimiro.
  7//
  8// Distributed under the Boost Software License, Version 1.0. (See accompanying
  9// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 10//
 11
 12#ifndef BOOST_ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
 13#define BOOST_ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
 14
 15#if defined(_MSC_VER) && (_MSC_VER >= 1200)
 16# pragma once
 17#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 18
 19#include <boost/asio/detail/config.hpp>
 20
 21#if defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
 22
 23#include <cstring>
 24#include <boost/asio/detail/socket_ops.hpp>
 25#include <boost/asio/detail/throw_error.hpp>
 26#include <boost/asio/error.hpp>
 27#include <boost/asio/local/detail/endpoint.hpp>
 28
 29#include <boost/asio/detail/push_options.hpp>
 30
 31namespace boost {
 32namespace asio {
 33namespace local {
 34namespace detail {
 35
 36endpoint::endpoint()
 37{
 38  init("", 0);
 39}
 40
 41endpoint::endpoint(const char* path_name)
 42{
 43  using namespace std; // For strlen.
 44  init(path_name, strlen(path_name));
 45}
 46
 47endpoint::endpoint(const std::string& path_name)
 48{
 49  init(path_name.data(), path_name.length());
 50}
 51
 52void endpoint::resize(std::size_t new_size)
 53{
 54  if (new_size > sizeof(boost::asio::detail::sockaddr_un_type))
 55  {
 56    boost::system::error_code ec(boost::asio::error::invalid_argument);
 57    boost::asio::detail::throw_error(ec);
 58  }
 59  else if (new_size == 0)
 60  {
 61    path_length_ = 0;
 62  }
 63  else
 64  {
 65    path_length_ = new_size
 66      - offsetof(boost::asio::detail::sockaddr_un_type, sun_path);
 67
 68    // The path returned by the operating system may be NUL-terminated.
 69    if (path_length_ > 0 && data_.local.sun_path[path_length_ - 1] == 0)
 70      --path_length_;
 71  }
 72}
 73
 74std::string endpoint::path() const
 75{
 76  return std::string(data_.local.sun_path, path_length_);
 77}
 78
 79void endpoint::path(const char* p)
 80{
 81  using namespace std; // For strlen.
 82  init(p, strlen(p));
 83}
 84
 85void endpoint::path(const std::string& p)
 86{
 87  init(p.data(), p.length());
 88}
 89
 90bool operator==(const endpoint& e1, const endpoint& e2)
 91{
 92  return e1.path() == e2.path();
 93}
 94
 95bool operator<(const endpoint& e1, const endpoint& e2)
 96{
 97  return e1.path() < e2.path();
 98}
 99
100void endpoint::init(const char* path_name, std::size_t path_length)
101{
102  if (path_length > sizeof(data_.local.sun_path) - 1)
103  {
104    // The buffer is not large enough to store this address.
105    boost::system::error_code ec(boost::asio::error::name_too_long);
106    boost::asio::detail::throw_error(ec);
107  }
108
109  using namespace std; // For memcpy.
110  data_.local = boost::asio::detail::sockaddr_un_type();
111  data_.local.sun_family = AF_UNIX;
112  memcpy(data_.local.sun_path, path_name, path_length);
113  path_length_ = path_length;
114
115  // NUL-terminate normal path names. Names that start with a NUL are in the
116  // UNIX domain protocol's "abstract namespace" and are not NUL-terminated.
117  if (path_length > 0 && data_.local.sun_path[0] == 0)
118    data_.local.sun_path[path_length] = 0;
119}
120
121} // namespace detail
122} // namespace local
123} // namespace asio
124} // namespace boost
125
126#include <boost/asio/detail/pop_options.hpp>
127
128#endif // defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
129
130#endif // BOOST_ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP