417 lines
12 KiB
C++
417 lines
12 KiB
C++
//
|
|
// ip/address_v6.hpp
|
|
// ~~~~~~~~~~~~~~~~~
|
|
//
|
|
// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
|
|
//
|
|
// 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_IP_ADDRESS_V6_HPP
|
|
#define ASIO_IP_ADDRESS_V6_HPP
|
|
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
# pragma once
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
|
|
#include "asio/detail/config.hpp"
|
|
#include <string>
|
|
#include "asio/detail/array.hpp"
|
|
#include "asio/detail/cstdint.hpp"
|
|
#include "asio/detail/socket_types.hpp"
|
|
#include "asio/detail/string_view.hpp"
|
|
#include "asio/detail/winsock_init.hpp"
|
|
#include "asio/error_code.hpp"
|
|
#include "asio/ip/address_v4.hpp"
|
|
|
|
#if defined(ASIO_HAS_STD_HASH)
|
|
# include <functional>
|
|
#endif // defined(ASIO_HAS_STD_HASH)
|
|
|
|
#if !defined(ASIO_NO_IOSTREAM)
|
|
# include <iosfwd>
|
|
#endif // !defined(ASIO_NO_IOSTREAM)
|
|
|
|
#include "asio/detail/push_options.hpp"
|
|
|
|
namespace asio {
|
|
namespace ip {
|
|
|
|
template <typename> class basic_address_iterator;
|
|
|
|
/// Type used for storing IPv6 scope IDs.
|
|
typedef uint_least32_t scope_id_type;
|
|
|
|
/// Implements IP version 6 style addresses.
|
|
/**
|
|
* The asio::ip::address_v6 class provides the ability to use and
|
|
* manipulate IP version 6 addresses.
|
|
*
|
|
* @par Thread Safety
|
|
* @e Distinct @e objects: Safe.@n
|
|
* @e Shared @e objects: Unsafe.
|
|
*/
|
|
class address_v6
|
|
{
|
|
public:
|
|
/// The type used to represent an address as an array of bytes.
|
|
/**
|
|
* @note This type is defined in terms of the C++0x template @c std::array
|
|
* when it is available. Otherwise, it uses @c boost:array.
|
|
*/
|
|
#if defined(GENERATING_DOCUMENTATION)
|
|
typedef array<unsigned char, 16> bytes_type;
|
|
#else
|
|
typedef asio::detail::array<unsigned char, 16> bytes_type;
|
|
#endif
|
|
|
|
/// Default constructor.
|
|
/**
|
|
* Initialises the @c address_v6 object such that:
|
|
* @li <tt>to_bytes()</tt> yields <tt>{0, 0, ..., 0}</tt>; and
|
|
* @li <tt>scope_id() == 0</tt>.
|
|
*/
|
|
ASIO_DECL address_v6() ASIO_NOEXCEPT;
|
|
|
|
/// Construct an address from raw bytes and scope ID.
|
|
/**
|
|
* Initialises the @c address_v6 object such that:
|
|
* @li <tt>to_bytes() == bytes</tt>; and
|
|
* @li <tt>this->scope_id() == scope_id</tt>.
|
|
*
|
|
* @throws out_of_range Thrown if any element in @c bytes is not in the range
|
|
* <tt>0 - 0xFF</tt>. Note that no range checking is required for platforms
|
|
* where <tt>std::numeric_limits<unsigned char>::max()</tt> is <tt>0xFF</tt>.
|
|
*/
|
|
ASIO_DECL explicit address_v6(const bytes_type& bytes,
|
|
scope_id_type scope_id = 0);
|
|
|
|
/// Copy constructor.
|
|
ASIO_DECL address_v6(const address_v6& other) ASIO_NOEXCEPT;
|
|
|
|
#if defined(ASIO_HAS_MOVE)
|
|
/// Move constructor.
|
|
ASIO_DECL address_v6(address_v6&& other) ASIO_NOEXCEPT;
|
|
#endif // defined(ASIO_HAS_MOVE)
|
|
|
|
/// Assign from another address.
|
|
ASIO_DECL address_v6& operator=(
|
|
const address_v6& other) ASIO_NOEXCEPT;
|
|
|
|
#if defined(ASIO_HAS_MOVE)
|
|
/// Move-assign from another address.
|
|
ASIO_DECL address_v6& operator=(address_v6&& other) ASIO_NOEXCEPT;
|
|
#endif // defined(ASIO_HAS_MOVE)
|
|
|
|
/// The scope ID of the address.
|
|
/**
|
|
* Returns the scope ID associated with the IPv6 address.
|
|
*/
|
|
scope_id_type scope_id() const ASIO_NOEXCEPT
|
|
{
|
|
return scope_id_;
|
|
}
|
|
|
|
/// The scope ID of the address.
|
|
/**
|
|
* Modifies the scope ID associated with the IPv6 address.
|
|
*
|
|
* @param id The new scope ID.
|
|
*/
|
|
void scope_id(scope_id_type id) ASIO_NOEXCEPT
|
|
{
|
|
scope_id_ = id;
|
|
}
|
|
|
|
/// Get the address in bytes, in network byte order.
|
|
ASIO_DECL bytes_type to_bytes() const ASIO_NOEXCEPT;
|
|
|
|
/// Get the address as a string.
|
|
ASIO_DECL std::string to_string() const;
|
|
|
|
#if !defined(ASIO_NO_DEPRECATED)
|
|
/// (Deprecated: Use other overload.) Get the address as a string.
|
|
ASIO_DECL std::string to_string(asio::error_code& ec) const;
|
|
|
|
/// (Deprecated: Use make_address_v6().) Create an IPv6 address from an IP
|
|
/// address string.
|
|
static address_v6 from_string(const char* str);
|
|
|
|
/// (Deprecated: Use make_address_v6().) Create an IPv6 address from an IP
|
|
/// address string.
|
|
static address_v6 from_string(
|
|
const char* str, asio::error_code& ec);
|
|
|
|
/// (Deprecated: Use make_address_v6().) Create an IPv6 address from an IP
|
|
/// address string.
|
|
static address_v6 from_string(const std::string& str);
|
|
|
|
/// (Deprecated: Use make_address_v6().) Create an IPv6 address from an IP
|
|
/// address string.
|
|
static address_v6 from_string(
|
|
const std::string& str, asio::error_code& ec);
|
|
|
|
/// (Deprecated: Use make_address_v4().) Converts an IPv4-mapped or
|
|
/// IPv4-compatible address to an IPv4 address.
|
|
ASIO_DECL address_v4 to_v4() const;
|
|
#endif // !defined(ASIO_NO_DEPRECATED)
|
|
|
|
/// Determine whether the address is a loopback address.
|
|
/**
|
|
* This function tests whether the address is the loopback address
|
|
* <tt>::1</tt>.
|
|
*/
|
|
ASIO_DECL bool is_loopback() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is unspecified.
|
|
/**
|
|
* This function tests whether the address is the loopback address
|
|
* <tt>::</tt>.
|
|
*/
|
|
ASIO_DECL bool is_unspecified() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is link local.
|
|
ASIO_DECL bool is_link_local() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is site local.
|
|
ASIO_DECL bool is_site_local() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is a mapped IPv4 address.
|
|
ASIO_DECL bool is_v4_mapped() const ASIO_NOEXCEPT;
|
|
|
|
#if !defined(ASIO_NO_DEPRECATED)
|
|
/// (Deprecated: No replacement.) Determine whether the address is an
|
|
/// IPv4-compatible address.
|
|
ASIO_DECL bool is_v4_compatible() const;
|
|
#endif // !defined(ASIO_NO_DEPRECATED)
|
|
|
|
/// Determine whether the address is a multicast address.
|
|
ASIO_DECL bool is_multicast() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is a global multicast address.
|
|
ASIO_DECL bool is_multicast_global() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is a link-local multicast address.
|
|
ASIO_DECL bool is_multicast_link_local() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is a node-local multicast address.
|
|
ASIO_DECL bool is_multicast_node_local() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is a org-local multicast address.
|
|
ASIO_DECL bool is_multicast_org_local() const ASIO_NOEXCEPT;
|
|
|
|
/// Determine whether the address is a site-local multicast address.
|
|
ASIO_DECL bool is_multicast_site_local() const ASIO_NOEXCEPT;
|
|
|
|
/// Compare two addresses for equality.
|
|
ASIO_DECL friend bool operator==(const address_v6& a1,
|
|
const address_v6& a2) ASIO_NOEXCEPT;
|
|
|
|
/// Compare two addresses for inequality.
|
|
friend bool operator!=(const address_v6& a1,
|
|
const address_v6& a2) ASIO_NOEXCEPT
|
|
{
|
|
return !(a1 == a2);
|
|
}
|
|
|
|
/// Compare addresses for ordering.
|
|
ASIO_DECL friend bool operator<(const address_v6& a1,
|
|
const address_v6& a2) ASIO_NOEXCEPT;
|
|
|
|
/// Compare addresses for ordering.
|
|
friend bool operator>(const address_v6& a1,
|
|
const address_v6& a2) ASIO_NOEXCEPT
|
|
{
|
|
return a2 < a1;
|
|
}
|
|
|
|
/// Compare addresses for ordering.
|
|
friend bool operator<=(const address_v6& a1,
|
|
const address_v6& a2) ASIO_NOEXCEPT
|
|
{
|
|
return !(a2 < a1);
|
|
}
|
|
|
|
/// Compare addresses for ordering.
|
|
friend bool operator>=(const address_v6& a1,
|
|
const address_v6& a2) ASIO_NOEXCEPT
|
|
{
|
|
return !(a1 < a2);
|
|
}
|
|
|
|
/// Obtain an address object that represents any address.
|
|
/**
|
|
* This functions returns an address that represents the "any" address
|
|
* <tt>::</tt>.
|
|
*
|
|
* @returns A default-constructed @c address_v6 object.
|
|
*/
|
|
static address_v6 any() ASIO_NOEXCEPT
|
|
{
|
|
return address_v6();
|
|
}
|
|
|
|
/// Obtain an address object that represents the loopback address.
|
|
/**
|
|
* This function returns an address that represents the well-known loopback
|
|
* address <tt>::1</tt>.
|
|
*/
|
|
ASIO_DECL static address_v6 loopback() ASIO_NOEXCEPT;
|
|
|
|
#if !defined(ASIO_NO_DEPRECATED)
|
|
/// (Deprecated: Use make_address_v6().) Create an IPv4-mapped IPv6 address.
|
|
ASIO_DECL static address_v6 v4_mapped(const address_v4& addr);
|
|
|
|
/// (Deprecated: No replacement.) Create an IPv4-compatible IPv6 address.
|
|
ASIO_DECL static address_v6 v4_compatible(const address_v4& addr);
|
|
#endif // !defined(ASIO_NO_DEPRECATED)
|
|
|
|
private:
|
|
friend class basic_address_iterator<address_v6>;
|
|
|
|
// The underlying IPv6 address.
|
|
asio::detail::in6_addr_type addr_;
|
|
|
|
// The scope ID associated with the address.
|
|
scope_id_type scope_id_;
|
|
};
|
|
|
|
/// Create an IPv6 address from raw bytes and scope ID.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
inline address_v6 make_address_v6(const address_v6::bytes_type& bytes,
|
|
scope_id_type scope_id = 0)
|
|
{
|
|
return address_v6(bytes, scope_id);
|
|
}
|
|
|
|
/// Create an IPv6 address from an IP address string.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(const char* str);
|
|
|
|
/// Create an IPv6 address from an IP address string.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(const char* str,
|
|
asio::error_code& ec) ASIO_NOEXCEPT;
|
|
|
|
/// Createan IPv6 address from an IP address string.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(const std::string& str);
|
|
|
|
/// Create an IPv6 address from an IP address string.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(const std::string& str,
|
|
asio::error_code& ec) ASIO_NOEXCEPT;
|
|
|
|
#if defined(ASIO_HAS_STRING_VIEW) \
|
|
|| defined(GENERATING_DOCUMENTATION)
|
|
|
|
/// Create an IPv6 address from an IP address string.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(string_view str);
|
|
|
|
/// Create an IPv6 address from an IP address string.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(string_view str,
|
|
asio::error_code& ec) ASIO_NOEXCEPT;
|
|
|
|
#endif // defined(ASIO_HAS_STRING_VIEW)
|
|
// || defined(GENERATING_DOCUMENTATION)
|
|
|
|
/// Tag type used for distinguishing overloads that deal in IPv4-mapped IPv6
|
|
/// addresses.
|
|
enum v4_mapped_t { v4_mapped };
|
|
|
|
/// Create an IPv4 address from a IPv4-mapped IPv6 address.
|
|
/**
|
|
* @relates address_v4
|
|
*/
|
|
ASIO_DECL address_v4 make_address_v4(
|
|
v4_mapped_t, const address_v6& v6_addr);
|
|
|
|
/// Create an IPv4-mapped IPv6 address from an IPv4 address.
|
|
/**
|
|
* @relates address_v6
|
|
*/
|
|
ASIO_DECL address_v6 make_address_v6(
|
|
v4_mapped_t, const address_v4& v4_addr);
|
|
|
|
#if !defined(ASIO_NO_IOSTREAM)
|
|
|
|
/// Output an address as a string.
|
|
/**
|
|
* Used to output a human-readable string for a specified address.
|
|
*
|
|
* @param os The output stream to which the string will be written.
|
|
*
|
|
* @param addr The address to be written.
|
|
*
|
|
* @return The output stream.
|
|
*
|
|
* @relates asio::ip::address_v6
|
|
*/
|
|
template <typename Elem, typename Traits>
|
|
std::basic_ostream<Elem, Traits>& operator<<(
|
|
std::basic_ostream<Elem, Traits>& os, const address_v6& addr);
|
|
|
|
#endif // !defined(ASIO_NO_IOSTREAM)
|
|
|
|
} // namespace ip
|
|
} // namespace asio
|
|
|
|
#if defined(ASIO_HAS_STD_HASH)
|
|
namespace std {
|
|
|
|
template <>
|
|
struct hash<asio::ip::address_v6>
|
|
{
|
|
std::size_t operator()(const asio::ip::address_v6& addr)
|
|
const ASIO_NOEXCEPT
|
|
{
|
|
const asio::ip::address_v6::bytes_type bytes = addr.to_bytes();
|
|
std::size_t result = static_cast<std::size_t>(addr.scope_id());
|
|
combine_4_bytes(result, &bytes[0]);
|
|
combine_4_bytes(result, &bytes[4]);
|
|
combine_4_bytes(result, &bytes[8]);
|
|
combine_4_bytes(result, &bytes[12]);
|
|
return result;
|
|
}
|
|
|
|
private:
|
|
static void combine_4_bytes(std::size_t& seed, const unsigned char* bytes)
|
|
{
|
|
const std::size_t bytes_hash =
|
|
(static_cast<std::size_t>(bytes[0]) << 24) |
|
|
(static_cast<std::size_t>(bytes[1]) << 16) |
|
|
(static_cast<std::size_t>(bytes[2]) << 8) |
|
|
(static_cast<std::size_t>(bytes[3]));
|
|
seed ^= bytes_hash + 0x9e3779b9 + (seed << 6) + (seed >> 2);
|
|
}
|
|
};
|
|
|
|
} // namespace std
|
|
#endif // defined(ASIO_HAS_STD_HASH)
|
|
|
|
#include "asio/detail/pop_options.hpp"
|
|
|
|
#include "asio/ip/impl/address_v6.hpp"
|
|
#if defined(ASIO_HEADER_ONLY)
|
|
# include "asio/ip/impl/address_v6.ipp"
|
|
#endif // defined(ASIO_HEADER_ONLY)
|
|
|
|
#endif // ASIO_IP_ADDRESS_V6_HPP
|