Rearrange sources (#4997)

src/libxrpl/beast/net/IPAddressV4.cpp

@@ -0,0 +1,54 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <ripple/beast/net/IPAddressV4.h>
+
+#include <sstream>
+#include <stdexcept>
+
+namespace beast {
+namespace IP {
+
+bool
+is_private(AddressV4 const& addr)
+{
+    return ((addr.to_ulong() & 0xff000000) ==
+            0x0a000000) ||  // Prefix /8,    10.  #.#.#
+        ((addr.to_ulong() & 0xfff00000) ==
+         0xac100000) ||  // Prefix /12   172. 16.#.# - 172.31.#.#
+        ((addr.to_ulong() & 0xffff0000) ==
+         0xc0a80000) ||  // Prefix /16   192.168.#.#
+        addr.is_loopback();
+}
+
+bool
+is_public(AddressV4 const& addr)
+{
+    return !is_private(addr) && !addr.is_multicast();
+}
+
+char
+get_class(AddressV4 const& addr)
+{
+    static char const* table = "AAAABBCD";
+    return table[(addr.to_ulong() & 0xE0000000) >> 29];
+}
+
+}  // namespace IP
+}  // namespace beast