1 | // |
2 | // ip/impl/address_v4.ipp |
3 | // ~~~~~~~~~~~~~~~~~~~~~~ |
4 | // |
5 | // Copyright (c) 2003-2015 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(dest: &addr_.s_addr, src: bytes.data(), n: 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(e: ex); |
55 | } |
56 | #endif // ULONG_MAX > 0xFFFFFFFF |
57 | |
58 | addr_.s_addr = boost::asio::detail::socket_ops::host_to_network_long( |
59 | value: 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(dest: bytes.data(), src: &addr_.s_addr, n: 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(value: 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(err: 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), src: &addr_, dest: addr_str, |
93 | length: boost::asio::detail::max_addr_v4_str_len, scope_id: 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(err: 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), src: str, dest: &tmp.addr_, scope_id: 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: 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: 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 |
181 | |