// // ip/impl/address_v6.ipp // ~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2011 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_IMPL_ADDRESS_V6_IPP #define BOOST_ASIO_IP_IMPL_ADDRESS_V6_IPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #include <cstring> #include <stdexcept> #include <typeinfo> #include <boost/throw_exception.hpp> #include <boost/asio/detail/socket_ops.hpp> #include <boost/asio/detail/throw_error.hpp> #include <boost/asio/error.hpp> #include <boost/asio/ip/address_v6.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace ip { address_v6::address_v6() : scope_id_(0) { boost::asio::detail::in6_addr_type tmp_addr = IN6ADDR_ANY_INIT; addr_ = tmp_addr; } address_v6::address_v6(const address_v6::bytes_type& bytes, unsigned long scope_id) : 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); } address_v6::address_v6(const address_v6& other) : addr_(other.addr_), scope_id_(other.scope_id_) { } address_v6& address_v6::operator=(const address_v6& other) { addr_ = other.addr_; scope_id_ = other.scope_id_; return *this; } address_v6::bytes_type address_v6::to_bytes() const { using namespace std; // For memcpy. bytes_type bytes; memcpy(bytes.elems, addr_.s6_addr, 16); return bytes; } std::string address_v6::to_string() const { boost::system::error_code ec; std::string addr = to_string(ec); boost::asio::detail::throw_error(ec); return addr; } std::string address_v6::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; } address_v6 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; } address_v6 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; } address_v6 address_v6::from_string(const std::string& str) { return from_string(str.c_str()); } address_v6 address_v6::from_string( const std::string& str, boost::system::error_code& ec) { return from_string(str.c_str(), ec); } address_v4 address_v6::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); } bool address_v6::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 } bool address_v6::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 } bool address_v6::is_link_local() const { using namespace boost::asio::detail; return IN6_IS_ADDR_LINKLOCAL(&addr_) != 0; } bool address_v6::is_site_local() const { using namespace boost::asio::detail; return IN6_IS_ADDR_SITELOCAL(&addr_) != 0; } bool address_v6::is_v4_mapped() const { using namespace boost::asio::detail; return IN6_IS_ADDR_V4MAPPED(&addr_) != 0; } bool address_v6::is_v4_compatible() const { using namespace boost::asio::detail; return IN6_IS_ADDR_V4COMPAT(&addr_) != 0; } bool address_v6::is_multicast() const { using namespace boost::asio::detail; return IN6_IS_ADDR_MULTICAST(&addr_) != 0; } bool address_v6::is_multicast_global() const { using namespace boost::asio::detail; return IN6_IS_ADDR_MC_GLOBAL(&addr_) != 0; } bool address_v6::is_multicast_link_local() const { using namespace boost::asio::detail; return IN6_IS_ADDR_MC_LINKLOCAL(&addr_) != 0; } bool address_v6::is_multicast_node_local() const { using namespace boost::asio::detail; return IN6_IS_ADDR_MC_NODELOCAL(&addr_) != 0; } bool address_v6::is_multicast_org_local() const { using namespace boost::asio::detail; return IN6_IS_ADDR_MC_ORGLOCAL(&addr_) != 0; } bool address_v6::is_multicast_site_local() const { using namespace boost::asio::detail; return IN6_IS_ADDR_MC_SITELOCAL(&addr_) != 0; } 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_; } 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_; } address_v6 address_v6::loopback() { address_v6 tmp; boost::asio::detail::in6_addr_type tmp_addr = IN6ADDR_LOOPBACK_INIT; tmp.addr_ = tmp_addr; return tmp; } 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); } } // namespace ip } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_IP_IMPL_ADDRESS_V6_IPP