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1 | // |
2 | // ip/impl/address_v4.ipp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #ifndef BOOST_ASIO_IP_IMPL_ADDRESS_V4_IPP | |
12 | #define BOOST_ASIO_IP_IMPL_ADDRESS_V4_IPP | |
13 | ||
14 | #if defined(_MSC_VER) && (_MSC_VER >= 1200) | |
15 | # pragma once | |
16 | #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) | |
17 | ||
18 | #include <boost/asio/detail/config.hpp> | |
19 | #include <climits> | |
20 | #include <stdexcept> | |
21 | #include <boost/asio/error.hpp> | |
22 | #include <boost/asio/detail/socket_ops.hpp> | |
23 | #include <boost/asio/detail/throw_error.hpp> | |
24 | #include <boost/asio/detail/throw_exception.hpp> | |
25 | #include <boost/asio/ip/address_v4.hpp> | |
26 | ||
27 | #include <boost/asio/detail/push_options.hpp> | |
28 | ||
29 | namespace boost { | |
30 | namespace asio { | |
31 | namespace ip { | |
32 | ||
33 | address_v4::address_v4(const address_v4::bytes_type& bytes) | |
34 | { | |
35 | #if UCHAR_MAX > 0xFF | |
36 | if (bytes[0] > 0xFF || bytes[1] > 0xFF | |
37 | || bytes[2] > 0xFF || bytes[3] > 0xFF) | |
38 | { | |
39 | std::out_of_range ex("address_v4 from bytes_type"); | |
40 | boost::asio::detail::throw_exception(ex); | |
41 | } | |
42 | #endif // UCHAR_MAX > 0xFF | |
43 | ||
44 | using namespace std; // For memcpy. | |
45 | memcpy(&addr_.s_addr, bytes.data(), 4); | |
46 | } | |
47 | ||
48 | address_v4::address_v4(unsigned long addr) | |
49 | { | |
50 | #if ULONG_MAX > 0xFFFFFFFF | |
51 | if (addr > 0xFFFFFFFF) | |
52 | { | |
53 | std::out_of_range ex("address_v4 from unsigned long"); | |
54 | boost::asio::detail::throw_exception(ex); | |
55 | } | |
56 | #endif // ULONG_MAX > 0xFFFFFFFF | |
57 | ||
58 | addr_.s_addr = boost::asio::detail::socket_ops::host_to_network_long( | |
59 | static_cast<boost::asio::detail::u_long_type>(addr)); | |
60 | } | |
61 | ||
62 | address_v4::bytes_type address_v4::to_bytes() const | |
63 | { | |
64 | using namespace std; // For memcpy. | |
65 | bytes_type bytes; | |
66 | #if defined(BOOST_ASIO_HAS_STD_ARRAY) | |
67 | memcpy(bytes.data(), &addr_.s_addr, 4); | |
68 | #else // defined(BOOST_ASIO_HAS_STD_ARRAY) | |
69 | memcpy(bytes.elems, &addr_.s_addr, 4); | |
70 | #endif // defined(BOOST_ASIO_HAS_STD_ARRAY) | |
71 | return bytes; | |
72 | } | |
73 | ||
74 | unsigned long address_v4::to_ulong() const | |
75 | { | |
76 | return boost::asio::detail::socket_ops::network_to_host_long(addr_.s_addr); | |
77 | } | |
78 | ||
79 | std::string address_v4::to_string() const | |
80 | { | |
81 | boost::system::error_code ec; | |
82 | std::string addr = to_string(ec); | |
83 | boost::asio::detail::throw_error(ec); | |
84 | return addr; | |
85 | } | |
86 | ||
87 | std::string address_v4::to_string(boost::system::error_code& ec) const | |
88 | { | |
89 | char addr_str[boost::asio::detail::max_addr_v4_str_len]; | |
90 | const char* addr = | |
91 | boost::asio::detail::socket_ops::inet_ntop( | |
92 | BOOST_ASIO_OS_DEF(AF_INET), &addr_, addr_str, | |
93 | boost::asio::detail::max_addr_v4_str_len, 0, ec); | |
94 | if (addr == 0) | |
95 | return std::string(); | |
96 | return addr; | |
97 | } | |
98 | ||
99 | address_v4 address_v4::from_string(const char* str) | |
100 | { | |
101 | boost::system::error_code ec; | |
102 | address_v4 addr = from_string(str, ec); | |
103 | boost::asio::detail::throw_error(ec); | |
104 | return addr; | |
105 | } | |
106 | ||
107 | address_v4 address_v4::from_string( | |
108 | const char* str, boost::system::error_code& ec) | |
109 | { | |
110 | address_v4 tmp; | |
111 | if (boost::asio::detail::socket_ops::inet_pton( | |
112 | BOOST_ASIO_OS_DEF(AF_INET), str, &tmp.addr_, 0, ec) <= 0) | |
113 | return address_v4(); | |
114 | return tmp; | |
115 | } | |
116 | ||
117 | address_v4 address_v4::from_string(const std::string& str) | |
118 | { | |
119 | return from_string(str.c_str()); | |
120 | } | |
121 | ||
122 | address_v4 address_v4::from_string( | |
123 | const std::string& str, boost::system::error_code& ec) | |
124 | { | |
125 | return from_string(str.c_str(), ec); | |
126 | } | |
127 | ||
128 | bool address_v4::is_loopback() const | |
129 | { | |
130 | return (to_ulong() & 0xFF000000) == 0x7F000000; | |
131 | } | |
132 | ||
133 | bool address_v4::is_unspecified() const | |
134 | { | |
135 | return to_ulong() == 0; | |
136 | } | |
137 | ||
138 | bool address_v4::is_class_a() const | |
139 | { | |
140 | return (to_ulong() & 0x80000000) == 0; | |
141 | } | |
142 | ||
143 | bool address_v4::is_class_b() const | |
144 | { | |
145 | return (to_ulong() & 0xC0000000) == 0x80000000; | |
146 | } | |
147 | ||
148 | bool address_v4::is_class_c() const | |
149 | { | |
150 | return (to_ulong() & 0xE0000000) == 0xC0000000; | |
151 | } | |
152 | ||
153 | bool address_v4::is_multicast() const | |
154 | { | |
155 | return (to_ulong() & 0xF0000000) == 0xE0000000; | |
156 | } | |
157 | ||
158 | address_v4 address_v4::broadcast(const address_v4& addr, const address_v4& mask) | |
159 | { | |
160 | return address_v4(addr.to_ulong() | (mask.to_ulong() ^ 0xFFFFFFFF)); | |
161 | } | |
162 | ||
163 | address_v4 address_v4::netmask(const address_v4& addr) | |
164 | { | |
165 | if (addr.is_class_a()) | |
166 | return address_v4(0xFF000000); | |
167 | if (addr.is_class_b()) | |
168 | return address_v4(0xFFFF0000); | |
169 | if (addr.is_class_c()) | |
170 | return address_v4(0xFFFFFF00); | |
171 | return address_v4(0xFFFFFFFF); | |
172 | } | |
173 | ||
174 | } // namespace ip | |
175 | } // namespace asio | |
176 | } // namespace boost | |
177 | ||
178 | #include <boost/asio/detail/pop_options.hpp> | |
179 | ||
180 | #endif // BOOST_ASIO_IP_IMPL_ADDRESS_V4_IPP |