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cce4cfef10
Co-authored-by: xrplf-ai-reviewer[bot] <266832837+xrplf-ai-reviewer[bot]@users.noreply.github.com>
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
#include <xrpl/beast/net/IPAddressV4.h>
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namespace beast::IP {
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bool
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isPrivate(AddressV4 const& addr)
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{
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return ((addr.to_uint() & 0xff000000) == 0x0a000000) || // Prefix /8, 10. #.#.#
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((addr.to_uint() & 0xfff00000) == 0xac100000) || // Prefix /12 172. 16.#.# - 172.31.#.#
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((addr.to_uint() & 0xffff0000) == 0xc0a80000) || // Prefix /16 192.168.#.#
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addr.is_loopback();
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}
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bool
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isPublic(AddressV4 const& addr)
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{
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if (isPrivate(addr))
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return false;
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if (addr.is_multicast())
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return false;
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auto const ip = addr.to_uint();
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// 0.0.0.0/8 "This network"
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if ((ip & 0xff000000) == 0x00000000)
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return false;
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// 100.64.0.0/10 Shared Address Space (CGNAT) - RFC 6598
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if ((ip & 0xffc00000) == 0x64400000)
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return false;
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// 169.254.0.0/16 Link-local
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if ((ip & 0xffff0000) == 0xa9fe0000)
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return false;
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// 192.0.0.0/24 IETF Protocol Assignments - RFC 6890
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if ((ip & 0xffffff00) == 0xc0000000)
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return false;
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// 192.0.2.0/24 TEST-NET-1 (documentation) - RFC 5737
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if ((ip & 0xffffff00) == 0xc0000200)
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return false;
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// 192.88.99.0/24 6to4 Relay Anycast (deprecated) - RFC 7526
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if ((ip & 0xffffff00) == 0xc0586300)
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return false;
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// 198.18.0.0/15 Benchmarking - RFC 2544
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if ((ip & 0xfffe0000) == 0xc6120000)
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return false;
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// 198.51.100.0/24 TEST-NET-2 (documentation) - RFC 5737
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if ((ip & 0xffffff00) == 0xc6336400)
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return false;
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// 203.0.113.0/24 TEST-NET-3 (documentation) - RFC 5737
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if ((ip & 0xffffff00) == 0xcb007100)
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return false;
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// 240.0.0.0/4 Reserved for future use - RFC 1112
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if ((ip & 0xf0000000) == 0xf0000000)
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return false;
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return true;
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}
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char
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getClass(AddressV4 const& addr)
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{
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static char const* kTABLE = "AAAABBCD"; // cspell:disable-line
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return kTABLE[(addr.to_uint() & 0xE0000000) >> 29];
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}
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} // namespace beast::IP
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