| // |
| // address_v6.hpp |
| // ~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2008 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 BOOST_ASIO_IP_ADDRESS_V6_HPP |
| #define BOOST_ASIO_IP_ADDRESS_V6_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| #include <cstring> |
| #include <string> |
| #include <stdexcept> |
| #include <typeinfo> |
| #include <boost/array.hpp> |
| #include <boost/throw_exception.hpp> |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #include <boost/asio/error.hpp> |
| #include <boost/asio/detail/socket_ops.hpp> |
| #include <boost/asio/detail/socket_types.hpp> |
| #include <boost/asio/detail/throw_error.hpp> |
| #include <boost/asio/ip/address_v4.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace ip { |
| |
| /// Implements IP version 6 style addresses. |
| /** |
| * The boost::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. |
| typedef boost::array<unsigned char, 16> bytes_type; |
| |
| /// Default constructor. |
| address_v6() |
| : scope_id_(0) |
| { |
| boost::asio::detail::in6_addr_type tmp_addr = IN6ADDR_ANY_INIT; |
| addr_ = tmp_addr; |
| } |
| |
| /// Construct an address from raw bytes and scope ID. |
| explicit address_v6(const bytes_type& bytes, unsigned long scope_id = 0) |
| : scope_id_(scope_id) |
| { |
| #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"); |
| boost::throw_exception(ex); |
| } |
| } |
| #endif // UCHAR_MAX > 0xFF |
| |
| using namespace std; // For memcpy. |
| memcpy(addr_.s6_addr, bytes.elems, 16); |
| } |
| |
| /// Copy constructor. |
| address_v6(const address_v6& other) |
| : addr_(other.addr_), |
| scope_id_(other.scope_id_) |
| { |
| } |
| |
| /// Assign from another address. |
| address_v6& operator=(const address_v6& other) |
| { |
| addr_ = other.addr_; |
| scope_id_ = other.scope_id_; |
| return *this; |
| } |
| |
| /// The scope ID of the address. |
| /** |
| * Returns the scope ID associated with the IPv6 address. |
| */ |
| unsigned long scope_id() const |
| { |
| return scope_id_; |
| } |
| |
| /// The scope ID of the address. |
| /** |
| * Modifies the scope ID associated with the IPv6 address. |
| */ |
| void scope_id(unsigned long id) |
| { |
| scope_id_ = id; |
| } |
| |
| /// Get the address in bytes. |
| bytes_type to_bytes() const |
| { |
| using namespace std; // For memcpy. |
| bytes_type bytes; |
| memcpy(bytes.elems, addr_.s6_addr, 16); |
| return bytes; |
| } |
| |
| /// Get the address as a string. |
| std::string to_string() const |
| { |
| boost::system::error_code ec; |
| std::string addr = to_string(ec); |
| boost::asio::detail::throw_error(ec); |
| return addr; |
| } |
| |
| /// Get the address as a string. |
| std::string to_string(boost::system::error_code& ec) const |
| { |
| char addr_str[boost::asio::detail::max_addr_v6_str_len]; |
| const char* addr = |
| boost::asio::detail::socket_ops::inet_ntop(AF_INET6, &addr_, addr_str, |
| boost::asio::detail::max_addr_v6_str_len, scope_id_, ec); |
| if (addr == 0) |
| return std::string(); |
| return addr; |
| } |
| |
| /// Create an address from an IP address string. |
| static address_v6 from_string(const char* str) |
| { |
| boost::system::error_code ec; |
| address_v6 addr = from_string(str, ec); |
| boost::asio::detail::throw_error(ec); |
| return addr; |
| } |
| |
| /// Create an address from an IP address string. |
| static address_v6 from_string(const char* str, boost::system::error_code& ec) |
| { |
| address_v6 tmp; |
| if (boost::asio::detail::socket_ops::inet_pton( |
| AF_INET6, str, &tmp.addr_, &tmp.scope_id_, ec) <= 0) |
| return address_v6(); |
| return tmp; |
| } |
| |
| /// Create an address from an IP address string. |
| static address_v6 from_string(const std::string& str) |
| { |
| return from_string(str.c_str()); |
| } |
| |
| /// Create an address from an IP address string. |
| static address_v6 from_string(const std::string& str, |
| boost::system::error_code& ec) |
| { |
| return from_string(str.c_str(), ec); |
| } |
| |
| /// Converts an IPv4-mapped or IPv4-compatible address to an IPv4 address. |
| address_v4 to_v4() const |
| { |
| if (!is_v4_mapped() && !is_v4_compatible()) |
| { |
| std::bad_cast ex; |
| boost::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); |
| } |
| |
| /// Determine whether the address is a loopback address. |
| bool is_loopback() const |
| { |
| #if defined(__BORLANDC__) |
| 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)); |
| #else |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_LOOPBACK(&addr_) != 0; |
| #endif |
| } |
| |
| /// Determine whether the address is unspecified. |
| bool is_unspecified() const |
| { |
| #if defined(__BORLANDC__) |
| 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)); |
| #else |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_UNSPECIFIED(&addr_) != 0; |
| #endif |
| } |
| |
| /// Determine whether the address is link local. |
| bool is_link_local() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_LINKLOCAL(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is site local. |
| bool is_site_local() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_SITELOCAL(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a mapped IPv4 address. |
| bool is_v4_mapped() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_V4MAPPED(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is an IPv4-compatible address. |
| bool is_v4_compatible() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_V4COMPAT(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a multicast address. |
| bool is_multicast() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_MULTICAST(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a global multicast address. |
| bool is_multicast_global() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_MC_GLOBAL(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a link-local multicast address. |
| bool is_multicast_link_local() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_MC_LINKLOCAL(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a node-local multicast address. |
| bool is_multicast_node_local() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_MC_NODELOCAL(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a org-local multicast address. |
| bool is_multicast_org_local() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_MC_ORGLOCAL(&addr_) != 0; |
| } |
| |
| /// Determine whether the address is a site-local multicast address. |
| bool is_multicast_site_local() const |
| { |
| using namespace boost::asio::detail; |
| return IN6_IS_ADDR_MC_SITELOCAL(&addr_) != 0; |
| } |
| |
| /// Compare two addresses for equality. |
| friend bool operator==(const address_v6& a1, const address_v6& a2) |
| { |
| using namespace std; // For memcmp. |
| return memcmp(&a1.addr_, &a2.addr_, |
| sizeof(boost::asio::detail::in6_addr_type)) == 0 |
| && a1.scope_id_ == a2.scope_id_; |
| } |
| |
| /// Compare two addresses for inequality. |
| friend bool operator!=(const address_v6& a1, const address_v6& a2) |
| { |
| using namespace std; // For memcmp. |
| return memcmp(&a1.addr_, &a2.addr_, |
| sizeof(boost::asio::detail::in6_addr_type)) != 0 |
| || a1.scope_id_ != a2.scope_id_; |
| } |
| |
| /// Compare addresses for ordering. |
| friend bool operator<(const address_v6& a1, const address_v6& a2) |
| { |
| using namespace std; // For memcmp. |
| int memcmp_result = memcmp(&a1.addr_, &a2.addr_, |
| sizeof(boost::asio::detail::in6_addr_type)); |
| if (memcmp_result < 0) |
| return true; |
| if (memcmp_result > 0) |
| return false; |
| return a1.scope_id_ < a2.scope_id_; |
| } |
| |
| /// Compare addresses for ordering. |
| friend bool operator>(const address_v6& a1, const address_v6& a2) |
| { |
| return a2 < a1; |
| } |
| |
| /// Compare addresses for ordering. |
| friend bool operator<=(const address_v6& a1, const address_v6& a2) |
| { |
| return !(a2 < a1); |
| } |
| |
| /// Compare addresses for ordering. |
| friend bool operator>=(const address_v6& a1, const address_v6& a2) |
| { |
| return !(a1 < a2); |
| } |
| |
| /// Obtain an address object that represents any address. |
| static address_v6 any() |
| { |
| return address_v6(); |
| } |
| |
| /// Obtain an address object that represents the loopback address. |
| static address_v6 loopback() |
| { |
| address_v6 tmp; |
| boost::asio::detail::in6_addr_type tmp_addr = IN6ADDR_LOOPBACK_INIT; |
| tmp.addr_ = tmp_addr; |
| return tmp; |
| } |
| |
| /// Create an IPv4-mapped IPv6 address. |
| static 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); |
| } |
| |
| /// Create an IPv4-compatible IPv6 address. |
| static 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); |
| } |
| |
| private: |
| // The underlying IPv6 address. |
| boost::asio::detail::in6_addr_type addr_; |
| |
| // The scope ID associated with the address. |
| unsigned long scope_id_; |
| }; |
| |
| /// 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 boost::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) |
| { |
| boost::system::error_code ec; |
| std::string s = addr.to_string(ec); |
| if (ec) |
| { |
| if (os.exceptions() & std::ios::failbit) |
| boost::asio::detail::throw_error(ec); |
| else |
| os.setstate(std::ios_base::failbit); |
| } |
| else |
| for (std::string::iterator i = s.begin(); i != s.end(); ++i) |
| os << os.widen(*i); |
| return os; |
| } |
| |
| } // namespace ip |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // BOOST_ASIO_IP_ADDRESS_V6_HPP |