libs/url/src/ipv4_address.cpp
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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/boostorg/url | ||
| 8 | // | ||
| 9 | |||
| 10 | |||
| 11 | #include <boost/url/detail/config.hpp> | ||
| 12 | #include <boost/url/ipv4_address.hpp> | ||
| 13 | #include <boost/url/detail/except.hpp> | ||
| 14 | #include <boost/url/grammar/parse.hpp> | ||
| 15 | #include <boost/url/rfc/ipv4_address_rule.hpp> | ||
| 16 | #include <cstring> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace urls { | ||
| 20 | |||
| 21 | 19 | ipv4_address:: | |
| 22 | ipv4_address( | ||
| 23 | 19 | uint_type addr) noexcept | |
| 24 | 19 | : addr_(addr) | |
| 25 | { | ||
| 26 | 19 | } | |
| 27 | |||
| 28 | 145 | ipv4_address:: | |
| 29 | ipv4_address( | ||
| 30 | 145 | bytes_type const& bytes) noexcept | |
| 31 | { | ||
| 32 | 145 | addr_ = | |
| 33 | 145 | (static_cast<unsigned long>(bytes[0]) << 24) | | |
| 34 | 145 | (static_cast<unsigned long>(bytes[1]) << 16) | | |
| 35 | 145 | (static_cast<unsigned long>(bytes[2]) << 8) | | |
| 36 | 145 | (static_cast<unsigned long>(bytes[3])); | |
| 37 | 145 | } | |
| 38 | |||
| 39 | 29 | ipv4_address:: | |
| 40 | ipv4_address( | ||
| 41 | 29 | core::string_view s) | |
| 42 | : ipv4_address( | ||
| 43 | 29 | parse_ipv4_address(s | |
| 44 |
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29 | ).value(BOOST_URL_POS)) |
| 45 | { | ||
| 46 | 28 | } | |
| 47 | |||
| 48 | auto | ||
| 49 | 79 | ipv4_address:: | |
| 50 | to_bytes() const noexcept -> | ||
| 51 | bytes_type | ||
| 52 | { | ||
| 53 | bytes_type bytes; | ||
| 54 | 79 | bytes[0] = (addr_ >> 24) & 0xff; | |
| 55 | 79 | bytes[1] = (addr_ >> 16) & 0xff; | |
| 56 | 79 | bytes[2] = (addr_ >> 8) & 0xff; | |
| 57 | 79 | bytes[3] = addr_ & 0xff; | |
| 58 | 79 | return bytes; | |
| 59 | } | ||
| 60 | |||
| 61 | auto | ||
| 62 | 56 | ipv4_address:: | |
| 63 | to_uint() const noexcept -> | ||
| 64 | uint_type | ||
| 65 | { | ||
| 66 | 56 | return addr_; | |
| 67 | } | ||
| 68 | |||
| 69 | core::string_view | ||
| 70 | 21 | ipv4_address:: | |
| 71 | to_buffer( | ||
| 72 | char* dest, | ||
| 73 | std::size_t dest_size) const | ||
| 74 | { | ||
| 75 |
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21 | if(dest_size < max_str_len) |
| 76 | 1 | detail::throw_length_error(); | |
| 77 | 20 | auto n = print_impl(dest); | |
| 78 | 20 | return core::string_view(dest, n); | |
| 79 | } | ||
| 80 | |||
| 81 | bool | ||
| 82 | 4 | ipv4_address:: | |
| 83 | is_loopback() const noexcept | ||
| 84 | { | ||
| 85 | 4 | return (to_uint() & 0xFF000000) == | |
| 86 | 4 | 0x7F000000; | |
| 87 | } | ||
| 88 | |||
| 89 | bool | ||
| 90 | 7 | ipv4_address:: | |
| 91 | is_unspecified() const noexcept | ||
| 92 | { | ||
| 93 | 7 | return to_uint() == 0; | |
| 94 | } | ||
| 95 | |||
| 96 | bool | ||
| 97 | 4 | ipv4_address:: | |
| 98 | is_multicast() const noexcept | ||
| 99 | { | ||
| 100 | 4 | return (to_uint() & 0xF0000000) == | |
| 101 | 4 | 0xE0000000; | |
| 102 | } | ||
| 103 | |||
| 104 | void | ||
| 105 | 1 | ipv4_address:: | |
| 106 | write_ostream(std::ostream& os) const | ||
| 107 | { | ||
| 108 | char buf[ipv4_address::max_str_len]; | ||
| 109 |
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1 | os << to_buffer(buf, sizeof(buf)); |
| 110 | 1 | } | |
| 111 | |||
| 112 | std::size_t | ||
| 113 | 31 | ipv4_address:: | |
| 114 | print_impl( | ||
| 115 | char* dest) const noexcept | ||
| 116 | { | ||
| 117 | 31 | auto const start = dest; | |
| 118 | auto const write = | ||
| 119 | 124 | []( char*& dest, | |
| 120 | unsigned char v) | ||
| 121 | { | ||
| 122 |
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124 | if(v >= 100) |
| 123 | { | ||
| 124 | 37 | *dest++ = '0' + | |
| 125 | 37 | v / 100; | |
| 126 | 37 | v %= 100; | |
| 127 | 37 | *dest++ = '0' + | |
| 128 | 37 | v / 10; | |
| 129 | 37 | v %= 10; | |
| 130 | } | ||
| 131 |
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87 | else if(v >= 10) |
| 132 | { | ||
| 133 | 3 | *dest++ = '0' + | |
| 134 | 3 | v / 10; | |
| 135 | 3 | v %= 10; | |
| 136 | } | ||
| 137 | 124 | *dest++ = '0' + v; | |
| 138 | 124 | }; | |
| 139 | 31 | auto const v = to_uint(); | |
| 140 | 31 | write(dest, (v >> 24) & 0xff); | |
| 141 | 31 | *dest++ = '.'; | |
| 142 | 31 | write(dest, (v >> 16) & 0xff); | |
| 143 | 31 | *dest++ = '.'; | |
| 144 | 31 | write(dest, (v >> 8) & 0xff); | |
| 145 | 31 | *dest++ = '.'; | |
| 146 | 31 | write(dest, (v ) & 0xff); | |
| 147 | 31 | return dest - start; | |
| 148 | } | ||
| 149 | |||
| 150 | void | ||
| 151 | 2 | ipv4_address:: | |
| 152 | to_string_impl( | ||
| 153 | string_token::arg& t) const | ||
| 154 | { | ||
| 155 | char buf[max_str_len]; | ||
| 156 | 2 | auto const n = print_impl(buf); | |
| 157 |
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2 | char* dest = t.prepare(n); |
| 158 | 2 | std::memcpy(dest, buf, n); | |
| 159 | 2 | } | |
| 160 | |||
| 161 | //------------------------------------------------ | ||
| 162 | |||
| 163 | auto | ||
| 164 | 134 | parse_ipv4_address( | |
| 165 | core::string_view s) noexcept -> | ||
| 166 | system::result<ipv4_address> | ||
| 167 | { | ||
| 168 | 134 | return grammar::parse( | |
| 169 | 134 | s, ipv4_address_rule); | |
| 170 | } | ||
| 171 | |||
| 172 | } // urls | ||
| 173 | } // boost | ||
| 174 | |||
| 175 |