| // |
| // ip/impl/address_v6.ipp |
| // ~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2019 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_IMPL_ADDRESS_V6_IPP |
| #define ASIO_IP_IMPL_ADDRESS_V6_IPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| #include <cstring> |
| #include <stdexcept> |
| #include <typeinfo> |
| #include "asio/detail/socket_ops.hpp" |
| #include "asio/detail/throw_error.hpp" |
| #include "asio/detail/throw_exception.hpp" |
| #include "asio/error.hpp" |
| #include "asio/ip/address_v6.hpp" |
| #include "asio/ip/bad_address_cast.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace ip { |
| |
| address_v6::address_v6() ASIO_NOEXCEPT |
| : addr_(), |
| scope_id_(0) |
| { |
| } |
| |
| address_v6::address_v6(const address_v6::bytes_type& bytes, |
| unsigned long scope) |
| : scope_id_(scope) |
| { |
| #if UCHAR_MAX > 0xFF |
| for (std::size_t i = 0; i < bytes.size(); ++i) |
| { |
| if (bytes[i] > 0xFF) |
| { |
| std::out_of_range ex("address_v6 from bytes_type"); |
| asio::detail::throw_exception(ex); |
| } |
| } |
| #endif // UCHAR_MAX > 0xFF |
| |
| using namespace std; // For memcpy. |
| memcpy(addr_.s6_addr, bytes.data(), 16); |
| } |
| |
| address_v6::address_v6(const address_v6& other) ASIO_NOEXCEPT |
| : addr_(other.addr_), |
| scope_id_(other.scope_id_) |
| { |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| address_v6::address_v6(address_v6&& other) ASIO_NOEXCEPT |
| : addr_(other.addr_), |
| scope_id_(other.scope_id_) |
| { |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| address_v6& address_v6::operator=(const address_v6& other) ASIO_NOEXCEPT |
| { |
| addr_ = other.addr_; |
| scope_id_ = other.scope_id_; |
| return *this; |
| } |
| |
| #if defined(ASIO_HAS_MOVE) |
| address_v6& address_v6::operator=(address_v6&& other) ASIO_NOEXCEPT |
| { |
| addr_ = other.addr_; |
| scope_id_ = other.scope_id_; |
| return *this; |
| } |
| #endif // defined(ASIO_HAS_MOVE) |
| |
| address_v6::bytes_type address_v6::to_bytes() const ASIO_NOEXCEPT |
| { |
| using namespace std; // For memcpy. |
| bytes_type bytes; |
| #if defined(ASIO_HAS_STD_ARRAY) |
| memcpy(bytes.data(), addr_.s6_addr, 16); |
| #else // defined(ASIO_HAS_STD_ARRAY) |
| memcpy(bytes.elems, addr_.s6_addr, 16); |
| #endif // defined(ASIO_HAS_STD_ARRAY) |
| return bytes; |
| } |
| |
| std::string address_v6::to_string() const |
| { |
| asio::error_code ec; |
| char addr_str[asio::detail::max_addr_v6_str_len]; |
| const char* addr = |
| asio::detail::socket_ops::inet_ntop( |
| ASIO_OS_DEF(AF_INET6), &addr_, addr_str, |
| asio::detail::max_addr_v6_str_len, scope_id_, ec); |
| if (addr == 0) |
| asio::detail::throw_error(ec); |
| return addr; |
| } |
| |
| #if !defined(ASIO_NO_DEPRECATED) |
| std::string address_v6::to_string(asio::error_code& ec) const |
| { |
| char addr_str[asio::detail::max_addr_v6_str_len]; |
| const char* addr = |
| asio::detail::socket_ops::inet_ntop( |
| ASIO_OS_DEF(AF_INET6), &addr_, addr_str, |
| asio::detail::max_addr_v6_str_len, scope_id_, ec); |
| if (addr == 0) |
| return std::string(); |
| return addr; |
| } |
| |
| address_v4 address_v6::to_v4() const |
| { |
| if (!is_v4_mapped() && !is_v4_compatible()) |
| { |
| bad_address_cast ex; |
| asio::detail::throw_exception(ex); |
| } |
| |
| address_v4::bytes_type v4_bytes = { { addr_.s6_addr[12], |
| addr_.s6_addr[13], addr_.s6_addr[14], addr_.s6_addr[15] } }; |
| return address_v4(v4_bytes); |
| } |
| #endif // !defined(ASIO_NO_DEPRECATED) |
| |
| bool address_v6::is_loopback() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0) && (addr_.s6_addr[1] == 0) |
| && (addr_.s6_addr[2] == 0) && (addr_.s6_addr[3] == 0) |
| && (addr_.s6_addr[4] == 0) && (addr_.s6_addr[5] == 0) |
| && (addr_.s6_addr[6] == 0) && (addr_.s6_addr[7] == 0) |
| && (addr_.s6_addr[8] == 0) && (addr_.s6_addr[9] == 0) |
| && (addr_.s6_addr[10] == 0) && (addr_.s6_addr[11] == 0) |
| && (addr_.s6_addr[12] == 0) && (addr_.s6_addr[13] == 0) |
| && (addr_.s6_addr[14] == 0) && (addr_.s6_addr[15] == 1)); |
| } |
| |
| bool address_v6::is_unspecified() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0) && (addr_.s6_addr[1] == 0) |
| && (addr_.s6_addr[2] == 0) && (addr_.s6_addr[3] == 0) |
| && (addr_.s6_addr[4] == 0) && (addr_.s6_addr[5] == 0) |
| && (addr_.s6_addr[6] == 0) && (addr_.s6_addr[7] == 0) |
| && (addr_.s6_addr[8] == 0) && (addr_.s6_addr[9] == 0) |
| && (addr_.s6_addr[10] == 0) && (addr_.s6_addr[11] == 0) |
| && (addr_.s6_addr[12] == 0) && (addr_.s6_addr[13] == 0) |
| && (addr_.s6_addr[14] == 0) && (addr_.s6_addr[15] == 0)); |
| } |
| |
| bool address_v6::is_link_local() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xfe) && ((addr_.s6_addr[1] & 0xc0) == 0x80)); |
| } |
| |
| bool address_v6::is_site_local() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xfe) && ((addr_.s6_addr[1] & 0xc0) == 0xc0)); |
| } |
| |
| bool address_v6::is_v4_mapped() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0) && (addr_.s6_addr[1] == 0) |
| && (addr_.s6_addr[2] == 0) && (addr_.s6_addr[3] == 0) |
| && (addr_.s6_addr[4] == 0) && (addr_.s6_addr[5] == 0) |
| && (addr_.s6_addr[6] == 0) && (addr_.s6_addr[7] == 0) |
| && (addr_.s6_addr[8] == 0) && (addr_.s6_addr[9] == 0) |
| && (addr_.s6_addr[10] == 0xff) && (addr_.s6_addr[11] == 0xff)); |
| } |
| |
| #if !defined(ASIO_NO_DEPRECATED) |
| bool address_v6::is_v4_compatible() const |
| { |
| return ((addr_.s6_addr[0] == 0) && (addr_.s6_addr[1] == 0) |
| && (addr_.s6_addr[2] == 0) && (addr_.s6_addr[3] == 0) |
| && (addr_.s6_addr[4] == 0) && (addr_.s6_addr[5] == 0) |
| && (addr_.s6_addr[6] == 0) && (addr_.s6_addr[7] == 0) |
| && (addr_.s6_addr[8] == 0) && (addr_.s6_addr[9] == 0) |
| && (addr_.s6_addr[10] == 0) && (addr_.s6_addr[11] == 0) |
| && !((addr_.s6_addr[12] == 0) |
| && (addr_.s6_addr[13] == 0) |
| && (addr_.s6_addr[14] == 0) |
| && ((addr_.s6_addr[15] == 0) || (addr_.s6_addr[15] == 1)))); |
| } |
| #endif // !defined(ASIO_NO_DEPRECATED) |
| |
| bool address_v6::is_multicast() const ASIO_NOEXCEPT |
| { |
| return (addr_.s6_addr[0] == 0xff); |
| } |
| |
| bool address_v6::is_multicast_global() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xff) && ((addr_.s6_addr[1] & 0x0f) == 0x0e)); |
| } |
| |
| bool address_v6::is_multicast_link_local() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xff) && ((addr_.s6_addr[1] & 0x0f) == 0x02)); |
| } |
| |
| bool address_v6::is_multicast_node_local() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xff) && ((addr_.s6_addr[1] & 0x0f) == 0x01)); |
| } |
| |
| bool address_v6::is_multicast_org_local() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xff) && ((addr_.s6_addr[1] & 0x0f) == 0x08)); |
| } |
| |
| bool address_v6::is_multicast_site_local() const ASIO_NOEXCEPT |
| { |
| return ((addr_.s6_addr[0] == 0xff) && ((addr_.s6_addr[1] & 0x0f) == 0x05)); |
| } |
| |
| bool operator==(const address_v6& a1, const address_v6& a2) ASIO_NOEXCEPT |
| { |
| using namespace std; // For memcmp. |
| return memcmp(&a1.addr_, &a2.addr_, |
| sizeof(asio::detail::in6_addr_type)) == 0 |
| && a1.scope_id_ == a2.scope_id_; |
| } |
| |
| bool operator<(const address_v6& a1, const address_v6& a2) ASIO_NOEXCEPT |
| { |
| using namespace std; // For memcmp. |
| int memcmp_result = memcmp(&a1.addr_, &a2.addr_, |
| sizeof(asio::detail::in6_addr_type)); |
| if (memcmp_result < 0) |
| return true; |
| if (memcmp_result > 0) |
| return false; |
| return a1.scope_id_ < a2.scope_id_; |
| } |
| |
| address_v6 address_v6::loopback() ASIO_NOEXCEPT |
| { |
| address_v6 tmp; |
| tmp.addr_.s6_addr[15] = 1; |
| return tmp; |
| } |
| |
| #if !defined(ASIO_NO_DEPRECATED) |
| address_v6 address_v6::v4_mapped(const address_v4& addr) |
| { |
| address_v4::bytes_type v4_bytes = addr.to_bytes(); |
| bytes_type v6_bytes = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, |
| v4_bytes[0], v4_bytes[1], v4_bytes[2], v4_bytes[3] } }; |
| return address_v6(v6_bytes); |
| } |
| |
| address_v6 address_v6::v4_compatible(const address_v4& addr) |
| { |
| address_v4::bytes_type v4_bytes = addr.to_bytes(); |
| bytes_type v6_bytes = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| v4_bytes[0], v4_bytes[1], v4_bytes[2], v4_bytes[3] } }; |
| return address_v6(v6_bytes); |
| } |
| #endif // !defined(ASIO_NO_DEPRECATED) |
| |
| address_v6 make_address_v6(const char* str) |
| { |
| asio::error_code ec; |
| address_v6 addr = make_address_v6(str, ec); |
| asio::detail::throw_error(ec); |
| return addr; |
| } |
| |
| address_v6 make_address_v6(const char* str, |
| asio::error_code& ec) ASIO_NOEXCEPT |
| { |
| address_v6::bytes_type bytes; |
| unsigned long scope_id = 0; |
| if (asio::detail::socket_ops::inet_pton( |
| ASIO_OS_DEF(AF_INET6), str, &bytes[0], &scope_id, ec) <= 0) |
| return address_v6(); |
| return address_v6(bytes, scope_id); |
| } |
| |
| address_v6 make_address_v6(const std::string& str) |
| { |
| return make_address_v6(str.c_str()); |
| } |
| |
| address_v6 make_address_v6(const std::string& str, |
| asio::error_code& ec) ASIO_NOEXCEPT |
| { |
| return make_address_v6(str.c_str(), ec); |
| } |
| |
| #if defined(ASIO_HAS_STRING_VIEW) |
| |
| address_v6 make_address_v6(string_view str) |
| { |
| return make_address_v6(static_cast<std::string>(str)); |
| } |
| |
| address_v6 make_address_v6(string_view str, |
| asio::error_code& ec) ASIO_NOEXCEPT |
| { |
| return make_address_v6(static_cast<std::string>(str), ec); |
| } |
| |
| #endif // defined(ASIO_HAS_STRING_VIEW) |
| |
| address_v4 make_address_v4( |
| v4_mapped_t, const address_v6& v6_addr) |
| { |
| if (!v6_addr.is_v4_mapped()) |
| { |
| bad_address_cast ex; |
| asio::detail::throw_exception(ex); |
| } |
| |
| address_v6::bytes_type v6_bytes = v6_addr.to_bytes(); |
| address_v4::bytes_type v4_bytes = { { v6_bytes[12], |
| v6_bytes[13], v6_bytes[14], v6_bytes[15] } }; |
| return address_v4(v4_bytes); |
| } |
| |
| address_v6 make_address_v6( |
| v4_mapped_t, const address_v4& v4_addr) |
| { |
| address_v4::bytes_type v4_bytes = v4_addr.to_bytes(); |
| address_v6::bytes_type v6_bytes = { { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0xFF, 0xFF, v4_bytes[0], v4_bytes[1], v4_bytes[2], v4_bytes[3] } }; |
| return address_v6(v6_bytes); |
| } |
| |
| } // namespace ip |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_IP_IMPL_ADDRESS_V6_IPP |