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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
commit2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch)
treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/asio/ip/address_v6.hpp
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+//
+// 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