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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_v4.hpp
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+//
+// address_v4.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_V4_HPP
+#define BOOST_ASIO_IP_ADDRESS_V4_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 <climits>
+#include <string>
+#include <stdexcept>
+#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>
+
+namespace boost {
+namespace asio {
+namespace ip {
+
+/// Implements IP version 4 style addresses.
+/**
+ * The boost::asio::ip::address_v4 class provides the ability to use and
+ * manipulate IP version 4 addresses.
+ *
+ * @par Thread Safety
+ * @e Distinct @e objects: Safe.@n
+ * @e Shared @e objects: Unsafe.
+ */
+class address_v4
+{
+public:
+ /// The type used to represent an address as an array of bytes.
+ typedef boost::array<unsigned char, 4> bytes_type;
+
+ /// Default constructor.
+ address_v4()
+ {
+ addr_.s_addr = 0;
+ }
+
+ /// Construct an address from raw bytes.
+ explicit address_v4(const bytes_type& bytes)
+ {
+#if UCHAR_MAX > 0xFF
+ if (bytes[0] > 0xFF || bytes[1] > 0xFF
+ || bytes[2] > 0xFF || bytes[3] > 0xFF)
+ {
+ std::out_of_range ex("address_v4 from bytes_type");
+ boost::throw_exception(ex);
+ }
+#endif // UCHAR_MAX > 0xFF
+
+ using namespace std; // For memcpy.
+ memcpy(&addr_.s_addr, bytes.elems, 4);
+ }
+
+ /// Construct an address from a unsigned long in host byte order.
+ explicit address_v4(unsigned long addr)
+ {
+#if ULONG_MAX > 0xFFFFFFFF
+ if (addr > 0xFFFFFFFF)
+ {
+ std::out_of_range ex("address_v4 from unsigned long");
+ boost::throw_exception(ex);
+ }
+#endif // ULONG_MAX > 0xFFFFFFFF
+
+ addr_.s_addr = boost::asio::detail::socket_ops::host_to_network_long(addr);
+ }
+
+ /// Copy constructor.
+ address_v4(const address_v4& other)
+ : addr_(other.addr_)
+ {
+ }
+
+ /// Assign from another address.
+ address_v4& operator=(const address_v4& other)
+ {
+ addr_ = other.addr_;
+ return *this;
+ }
+
+ /// Get the address in bytes.
+ bytes_type to_bytes() const
+ {
+ using namespace std; // For memcpy.
+ bytes_type bytes;
+ memcpy(bytes.elems, &addr_.s_addr, 4);
+ return bytes;
+ }
+
+ /// Get the address as an unsigned long in host byte order
+ unsigned long to_ulong() const
+ {
+ return boost::asio::detail::socket_ops::network_to_host_long(addr_.s_addr);
+ }
+
+ /// Get the address as a string in dotted decimal format.
+ 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 in dotted decimal format.
+ std::string to_string(boost::system::error_code& ec) const
+ {
+ char addr_str[boost::asio::detail::max_addr_v4_str_len];
+ const char* addr =
+ boost::asio::detail::socket_ops::inet_ntop(AF_INET, &addr_, addr_str,
+ boost::asio::detail::max_addr_v4_str_len, 0, ec);
+ if (addr == 0)
+ return std::string();
+ return addr;
+ }
+
+ /// Create an address from an IP address string in dotted decimal form.
+ static address_v4 from_string(const char* str)
+ {
+ boost::system::error_code ec;
+ address_v4 addr = from_string(str, ec);
+ boost::asio::detail::throw_error(ec);
+ return addr;
+ }
+
+ /// Create an address from an IP address string in dotted decimal form.
+ static address_v4 from_string(const char* str, boost::system::error_code& ec)
+ {
+ address_v4 tmp;
+ if (boost::asio::detail::socket_ops::inet_pton(
+ AF_INET, str, &tmp.addr_, 0, ec) <= 0)
+ return address_v4();
+ return tmp;
+ }
+
+ /// Create an address from an IP address string in dotted decimal form.
+ static address_v4 from_string(const std::string& str)
+ {
+ return from_string(str.c_str());
+ }
+
+ /// Create an address from an IP address string in dotted decimal form.
+ static address_v4 from_string(const std::string& str,
+ boost::system::error_code& ec)
+ {
+ return from_string(str.c_str(), ec);
+ }
+
+ /// Determine whether the address is a class A address.
+ bool is_class_a() const
+ {
+ return IN_CLASSA(to_ulong());
+ }
+
+ /// Determine whether the address is a class B address.
+ bool is_class_b() const
+ {
+ return IN_CLASSB(to_ulong());
+ }
+
+ /// Determine whether the address is a class C address.
+ bool is_class_c() const
+ {
+ return IN_CLASSC(to_ulong());
+ }
+
+ /// Determine whether the address is a multicast address.
+ bool is_multicast() const
+ {
+ return IN_MULTICAST(to_ulong());
+ }
+
+ /// Compare two addresses for equality.
+ friend bool operator==(const address_v4& a1, const address_v4& a2)
+ {
+ return a1.addr_.s_addr == a2.addr_.s_addr;
+ }
+
+ /// Compare two addresses for inequality.
+ friend bool operator!=(const address_v4& a1, const address_v4& a2)
+ {
+ return a1.addr_.s_addr != a2.addr_.s_addr;
+ }
+
+ /// Compare addresses for ordering.
+ friend bool operator<(const address_v4& a1, const address_v4& a2)
+ {
+ return a1.to_ulong() < a2.to_ulong();
+ }
+
+ /// Compare addresses for ordering.
+ friend bool operator>(const address_v4& a1, const address_v4& a2)
+ {
+ return a1.to_ulong() > a2.to_ulong();
+ }
+
+ /// Compare addresses for ordering.
+ friend bool operator<=(const address_v4& a1, const address_v4& a2)
+ {
+ return a1.to_ulong() <= a2.to_ulong();
+ }
+
+ /// Compare addresses for ordering.
+ friend bool operator>=(const address_v4& a1, const address_v4& a2)
+ {
+ return a1.to_ulong() >= a2.to_ulong();
+ }
+
+ /// Obtain an address object that represents any address.
+ static address_v4 any()
+ {
+ return address_v4(static_cast<unsigned long>(INADDR_ANY));
+ }
+
+ /// Obtain an address object that represents the loopback address.
+ static address_v4 loopback()
+ {
+ return address_v4(static_cast<unsigned long>(INADDR_LOOPBACK));
+ }
+
+ /// Obtain an address object that represents the broadcast address.
+ static address_v4 broadcast()
+ {
+ return address_v4(static_cast<unsigned long>(INADDR_BROADCAST));
+ }
+
+ /// Obtain an address object that represents the broadcast address that
+ /// corresponds to the specified address and netmask.
+ static address_v4 broadcast(const address_v4& addr, const address_v4& mask)
+ {
+ return address_v4(addr.to_ulong() | ~mask.to_ulong());
+ }
+
+ /// Obtain the netmask that corresponds to the address, based on its address
+ /// class.
+ static address_v4 netmask(const address_v4& addr)
+ {
+ if (addr.is_class_a())
+ return address_v4(0xFF000000);
+ if (addr.is_class_b())
+ return address_v4(0xFFFF0000);
+ if (addr.is_class_c())
+ return address_v4(0xFFFFFF00);
+ return address_v4(0xFFFFFFFF);
+ }
+
+private:
+ // The underlying IPv4 address.
+ boost::asio::detail::in4_addr_type addr_;
+};
+
+/// 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_v4
+ */
+template <typename Elem, typename Traits>
+std::basic_ostream<Elem, Traits>& operator<<(
+ std::basic_ostream<Elem, Traits>& os, const address_v4& 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_V4_HPP