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90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <xrpl/beast/net/IPAddressV4.h>
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namespace beast {
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namespace IP {
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bool
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is_private(AddressV4 const& addr)
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{
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return ((addr.to_ulong() & 0xff000000) ==
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0x0a000000) || // Prefix /8, 10. #.#.#
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((addr.to_ulong() & 0xfff00000) ==
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0xac100000) || // Prefix /12 172. 16.#.# - 172.31.#.#
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((addr.to_ulong() & 0xffff0000) ==
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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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is_public(AddressV4 const& addr)
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{
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if (is_private(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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get_class(AddressV4 const& addr)
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{
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static char const* table = "AAAABBCD";
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return table[(addr.to_ulong() & 0xE0000000) >> 29];
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}
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} // namespace IP
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} // namespace beast
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