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//
// local/detail/impl/endpoint.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Derived from a public domain implementation written by Daniel Casimiro.
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
#define ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_HAS_LOCAL_SOCKETS)
#include <cstring>
#include "asio/detail/socket_ops.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/local/detail/endpoint.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace local {
namespace detail {
endpoint::endpoint()
{
init("", 0);
}
endpoint::endpoint(const char* path_name)
{
using namespace std; // For strlen.
init(path_name, strlen(path_name));
}
endpoint::endpoint(const std::string& path_name)
{
init(path_name.data(), path_name.length());
}
void endpoint::resize(std::size_t new_size)
{
if (new_size > sizeof(asio::detail::sockaddr_un_type))
{
asio::error_code ec(asio::error::invalid_argument);
asio::detail::throw_error(ec);
}
else if (new_size == 0)
{
path_length_ = 0;
}
else
{
path_length_ = new_size
- offsetof(asio::detail::sockaddr_un_type, sun_path);
// The path returned by the operating system may be NUL-terminated.
if (path_length_ > 0 && data_.local.sun_path[path_length_ - 1] == 0)
--path_length_;
}
}
std::string endpoint::path() const
{
return std::string(data_.local.sun_path, path_length_);
}
void endpoint::path(const char* p)
{
using namespace std; // For strlen.
init(p, strlen(p));
}
void endpoint::path(const std::string& p)
{
init(p.data(), p.length());
}
bool operator==(const endpoint& e1, const endpoint& e2)
{
return e1.path() == e2.path();
}
bool operator<(const endpoint& e1, const endpoint& e2)
{
return e1.path() < e2.path();
}
void endpoint::init(const char* path_name, std::size_t path_length)
{
if (path_length > sizeof(data_.local.sun_path) - 1)
{
// The buffer is not large enough to store this address.
asio::error_code ec(asio::error::name_too_long);
asio::detail::throw_error(ec);
}
using namespace std; // For memcpy.
data_.local = asio::detail::sockaddr_un_type();
data_.local.sun_family = AF_UNIX;
if (path_length > 0)
memcpy(data_.local.sun_path, path_name, path_length);
path_length_ = path_length;
// NUL-terminate normal path names. Names that start with a NUL are in the
// UNIX domain protocol's "abstract namespace" and are not NUL-terminated.
if (path_length > 0 && data_.local.sun_path[0] == 0)
data_.local.sun_path[path_length] = 0;
}
} // namespace detail
} // namespace local
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_HAS_LOCAL_SOCKETS)
#endif // ASIO_LOCAL_DETAIL_IMPL_ENDPOINT_IPP
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