mirror of
https://github.com/oxen-io/lokinet.git
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140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
// vim:set ts=4 sw=4 ai:
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/*
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* Copyright (c) 2010-2013 BitTorrent, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include <assert.h>
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#include <stdio.h>
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#include "utp_types.h"
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#include "utp_hash.h"
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#include "utp_packedsockaddr.h"
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#include "libutp_inet_ntop.h"
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byte PackedSockAddr::get_family() const
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{
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#if defined(__sh__)
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return ((_sin6d[0] == 0) && (_sin6d[1] == 0) && (_sin6d[2] == htonl(0xffff)) != 0) ?
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AF_INET : AF_INET6;
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#else
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return (IN6_IS_ADDR_V4MAPPED(&_in._in6addr) != 0) ? AF_INET : AF_INET6;
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#endif // defined(__sh__)
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}
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bool PackedSockAddr::operator==(const PackedSockAddr& rhs) const
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{
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if (&rhs == this)
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return true;
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if (_port != rhs._port)
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return false;
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return memcmp(_sin6, rhs._sin6, sizeof(_sin6)) == 0;
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}
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bool PackedSockAddr::operator!=(const PackedSockAddr& rhs) const
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{
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return !(*this == rhs);
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}
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uint32 PackedSockAddr::compute_hash() const {
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return utp_hash_mem(&_in, sizeof(_in)) ^ _port;
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}
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void PackedSockAddr::set(const SOCKADDR_STORAGE* sa, socklen_t len)
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{
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if (sa->ss_family == AF_INET) {
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assert(len >= sizeof(sockaddr_in));
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const sockaddr_in *sin = (sockaddr_in*)sa;
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_sin6w[0] = 0;
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_sin6w[1] = 0;
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_sin6w[2] = 0;
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_sin6w[3] = 0;
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_sin6w[4] = 0;
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_sin6w[5] = 0xffff;
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_sin4 = sin->sin_addr.s_addr;
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_port = ntohs(sin->sin_port);
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} else {
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assert(len >= sizeof(sockaddr_in6));
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const sockaddr_in6 *sin6 = (sockaddr_in6*)sa;
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_in._in6addr = sin6->sin6_addr;
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_port = ntohs(sin6->sin6_port);
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}
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}
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PackedSockAddr::PackedSockAddr(const SOCKADDR_STORAGE* sa, socklen_t len)
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{
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set(sa, len);
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}
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PackedSockAddr::PackedSockAddr(void)
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{
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SOCKADDR_STORAGE sa;
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socklen_t len = sizeof(SOCKADDR_STORAGE);
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memset(&sa, 0, len);
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sa.ss_family = AF_INET;
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set(&sa, len);
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}
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SOCKADDR_STORAGE PackedSockAddr::get_sockaddr_storage(socklen_t *len = NULL) const
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{
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SOCKADDR_STORAGE sa;
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const byte family = get_family();
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if (family == AF_INET) {
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sockaddr_in *sin = (sockaddr_in*)&sa;
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if (len) *len = sizeof(sockaddr_in);
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memset(sin, 0, sizeof(sockaddr_in));
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sin->sin_family = family;
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sin->sin_port = htons(_port);
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sin->sin_addr.s_addr = _sin4;
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} else {
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sockaddr_in6 *sin6 = (sockaddr_in6*)&sa;
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memset(sin6, 0, sizeof(sockaddr_in6));
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if (len) *len = sizeof(sockaddr_in6);
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sin6->sin6_family = family;
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sin6->sin6_addr = _in._in6addr;
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sin6->sin6_port = htons(_port);
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}
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return sa;
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}
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// #define addrfmt(x, s) x.fmt(s, sizeof(s))
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cstr PackedSockAddr::fmt(str s, size_t len) const
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{
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memset(s, 0, len);
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const byte family = get_family();
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str i;
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if (family == AF_INET) {
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INET_NTOP(family, (uint32*)&_sin4, s, len);
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i = s;
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while (*++i) {}
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} else {
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i = s;
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*i++ = '[';
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INET_NTOP(family, (in6_addr*)&_in._in6addr, i, len-1);
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while (*++i) {}
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*i++ = ']';
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}
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snprintf(i, len - (i-s), ":%u", _port);
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return s;
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}
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