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ZeroTierOne/node/InetAddress.cpp

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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <string>
#include "Constants.hpp"
#include "InetAddress.hpp"
#include "Utils.hpp"
namespace ZeroTier {
const InetAddress InetAddress::LO4((const void *)("\x7f\x00\x00\x01"),4,0);
const InetAddress InetAddress::LO6((const void *)("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"),16,0);
InetAddress::IpScope InetAddress::ipScope() const
throw()
{
switch(ss_family) {
case AF_INET: {
const uint32_t ip = Utils::ntoh((uint32_t)reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr);
switch(ip >> 24) {
case 0x00: return IP_SCOPE_NONE; // 0.0.0.0/8 (reserved, never used)
case 0x06: return IP_SCOPE_PSEUDOPRIVATE; // 6.0.0.0/8 (US Army)
case 0x0a: return IP_SCOPE_PRIVATE; // 10.0.0.0/8
case 0x0b: return IP_SCOPE_PSEUDOPRIVATE; // 11.0.0.0/8 (US DoD)
case 0x15: return IP_SCOPE_PSEUDOPRIVATE; // 21.0.0.0/8 (US DDN-RVN)
case 0x16: return IP_SCOPE_PSEUDOPRIVATE; // 22.0.0.0/8 (US DISA)
case 0x19: return IP_SCOPE_PSEUDOPRIVATE; // 25.0.0.0/8 (UK Ministry of Defense)
case 0x1a: return IP_SCOPE_PSEUDOPRIVATE; // 26.0.0.0/8 (US DISA)
case 0x1c: return IP_SCOPE_PSEUDOPRIVATE; // 28.0.0.0/8 (US DSI-North)
case 0x1d: return IP_SCOPE_PSEUDOPRIVATE; // 29.0.0.0/8 (US DISA)
case 0x1e: return IP_SCOPE_PSEUDOPRIVATE; // 30.0.0.0/8 (US DISA)
case 0x2c: return IP_SCOPE_PSEUDOPRIVATE; // 44.0.0.0/8 (Amateur Radio)
case 0x33: return IP_SCOPE_PSEUDOPRIVATE; // 51.0.0.0/8 (UK Department of Social Security)
case 0x37: return IP_SCOPE_PSEUDOPRIVATE; // 55.0.0.0/8 (US DoD)
case 0x38: return IP_SCOPE_PSEUDOPRIVATE; // 56.0.0.0/8 (US Postal Service)
case 0x64:
if ((ip & 0xffc00000) == 0x64400000) return IP_SCOPE_SHARED; // 100.64.0.0/10
break;
case 0x7f: return IP_SCOPE_LOOPBACK; // 127.0.0.0/8
case 0xa9:
if ((ip & 0xffff0000) == 0xa9fe0000) return IP_SCOPE_LINK_LOCAL; // 169.254.0.0/16
break;
case 0xac:
if ((ip & 0xfff00000) == 0xac100000) return IP_SCOPE_PRIVATE; // 172.16.0.0/12
break;
case 0xc0:
if ((ip & 0xffff0000) == 0xc0a80000) return IP_SCOPE_PRIVATE; // 192.168.0.0/16
break;
case 0xff: return IP_SCOPE_NONE; // 255.0.0.0/8 (broadcast, or unused/unusable)
}
switch(ip >> 28) {
case 0xe: return IP_SCOPE_MULTICAST; // 224.0.0.0/4
case 0xf: return IP_SCOPE_PSEUDOPRIVATE; // 240.0.0.0/4 ("reserved," usually unusable)
}
return IP_SCOPE_GLOBAL;
} break;
case AF_INET6: {
const unsigned char *ip = reinterpret_cast<const unsigned char *>(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr);
if ((ip[0] & 0xf0) == 0xf0) {
if (ip[0] == 0xff) return IP_SCOPE_MULTICAST; // ff00::/8
if ((ip[0] == 0xfe)&&((ip[1] & 0xc0) == 0x80)) {
unsigned int k = 2;
while ((!ip[k])&&(k < 15)) ++k;
if ((k == 15)&&(ip[15] == 0x01))
return IP_SCOPE_LOOPBACK; // fe80::1/128
else return IP_SCOPE_LINK_LOCAL; // fe80::/10
}
if ((ip[0] & 0xfe) == 0xfc) return IP_SCOPE_PRIVATE; // fc00::/7
}
unsigned int k = 0;
while ((!ip[k])&&(k < 15)) ++k;
if (k == 15) { // all 0's except last byte
if (ip[15] == 0x01) return IP_SCOPE_LOOPBACK; // ::1/128
if (ip[15] == 0x00) return IP_SCOPE_NONE; // ::/128
}
return IP_SCOPE_GLOBAL;
} break;
}
return IP_SCOPE_NONE;
}
void InetAddress::set(const std::string &ip,unsigned int port)
throw()
{
memset(this,0,sizeof(InetAddress));
if (ip.find(':') != std::string::npos) {
struct sockaddr_in6 *sin6 = reinterpret_cast<struct sockaddr_in6 *>(this);
ss_family = AF_INET6;
sin6->sin6_port = Utils::hton((uint16_t)port);
if (inet_pton(AF_INET6,ip.c_str(),(void *)&(sin6->sin6_addr.s6_addr)) <= 0)
memset(this,0,sizeof(InetAddress));
} else {
struct sockaddr_in *sin = reinterpret_cast<struct sockaddr_in *>(this);
ss_family = AF_INET;
sin->sin_port = Utils::hton((uint16_t)port);
if (inet_pton(AF_INET,ip.c_str(),(void *)&(sin->sin_addr.s_addr)) <= 0)
memset(this,0,sizeof(InetAddress));
}
}
void InetAddress::set(const void *ipBytes,unsigned int ipLen,unsigned int port)
throw()
{
memset(this,0,sizeof(InetAddress));
if (ipLen == 4) {
uint32_t ipb[1];
memcpy(ipb,ipBytes,4);
ss_family = AF_INET;
reinterpret_cast<struct sockaddr_in *>(this)->sin_addr.s_addr = ipb[0];
reinterpret_cast<struct sockaddr_in *>(this)->sin_port = Utils::hton((uint16_t)port);
} else if (ipLen == 16) {
ss_family = AF_INET6;
memcpy(reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,ipBytes,16);
reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_port = Utils::hton((uint16_t)port);
}
}
std::string InetAddress::toString() const
{
char buf[128];
switch(ss_family) {
case AF_INET:
Utils::snprintf(buf,sizeof(buf),"%d.%d.%d.%d/%d",
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[0],
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[1],
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[2],
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[3],
(int)Utils::ntoh((uint16_t)(reinterpret_cast<const struct sockaddr_in *>(this)->sin_port))
);
return std::string(buf);
case AF_INET6:
Utils::snprintf(buf,sizeof(buf),"%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x/%d",
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[0]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[1]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[2]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[3]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[4]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[5]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[6]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[7]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[8]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[9]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[10]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[11]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[12]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[13]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[14]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[15]),
(int)Utils::ntoh((uint16_t)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_port))
);
return std::string(buf);
}
return std::string();
}
std::string InetAddress::toIpString() const
{
char buf[128];
switch(ss_family) {
case AF_INET:
Utils::snprintf(buf,sizeof(buf),"%d.%d.%d.%d",
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[0],
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[1],
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[2],
(int)(reinterpret_cast<const unsigned char *>(&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr)))[3]
);
return std::string(buf);
case AF_INET6:
Utils::snprintf(buf,sizeof(buf),"%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x:%.2x%.2x",
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[0]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[1]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[2]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[3]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[4]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[5]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[6]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[7]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[8]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[9]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[10]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[11]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[12]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[13]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[14]),
(int)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr[15])
);
return std::string(buf);
}
return std::string();
}
void InetAddress::fromString(const std::string &ipSlashPort)
{
const std::size_t slashAt = ipSlashPort.find('/');
if (slashAt == std::string::npos) {
set(ipSlashPort,0);
} else {
long p = strtol(ipSlashPort.substr(slashAt+1).c_str(),(char **)0,10);
if ((p > 0)&&(p <= 0xffff))
set(ipSlashPort.substr(0,slashAt),(unsigned int)p);
else set(ipSlashPort.substr(0,slashAt),0);
}
}
InetAddress InetAddress::netmask() const
{
InetAddress r(*this);
switch(r.ss_family) {
case AF_INET:
reinterpret_cast<struct sockaddr_in *>(&r)->sin_addr.s_addr = Utils::hton((uint32_t)(0xffffffff << (32 - netmaskBits())));
break;
case AF_INET6: {
uint64_t nm[2];
const unsigned int bits = netmaskBits();
nm[0] = Utils::hton((uint64_t)((bits >= 64) ? 0xffffffffffffffffULL : (0xffffffffffffffffULL << (64 - bits))));
nm[1] = Utils::hton((uint64_t)((bits <= 64) ? 0ULL : (0xffffffffffffffffULL << (128 - bits))));
memcpy(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,nm,16);
} break;
}
return r;
}
InetAddress InetAddress::broadcast() const
{
if (ss_family == AF_INET) {
InetAddress r(*this);
reinterpret_cast<struct sockaddr_in *>(&r)->sin_addr.s_addr |= Utils::hton((uint32_t)(0xffffffff >> netmaskBits()));
return r;
}
return InetAddress();
}
InetAddress InetAddress::network() const
{
InetAddress r(*this);
switch(r.ss_family) {
case AF_INET:
reinterpret_cast<struct sockaddr_in *>(&r)->sin_addr.s_addr &= Utils::hton((uint32_t)(0xffffffff << (32 - netmaskBits())));
break;
case AF_INET6: {
uint64_t nm[2];
const unsigned int bits = netmaskBits();
memcpy(nm,reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,16);
nm[0] &= Utils::hton((uint64_t)((bits >= 64) ? 0xffffffffffffffffULL : (0xffffffffffffffffULL << (64 - bits))));
nm[1] &= Utils::hton((uint64_t)((bits <= 64) ? 0ULL : (0xffffffffffffffffULL << (128 - bits))));
memcpy(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,nm,16);
} break;
}
return r;
}
bool InetAddress::containsAddress(const InetAddress &addr) const
{
if (addr.ss_family == ss_family) {
switch(ss_family) {
case AF_INET: {
const unsigned int bits = netmaskBits();
if (bits == 0)
return true;
return ( (Utils::ntoh((uint32_t)reinterpret_cast<const struct sockaddr_in *>(&addr)->sin_addr.s_addr) >> (32 - bits)) == (Utils::ntoh((uint32_t)reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr) >> (32 - bits)) );
}
case AF_INET6: {
const InetAddress mask(netmask());
const uint8_t *m = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&mask)->sin6_addr.s6_addr);
const uint8_t *a = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(&addr)->sin6_addr.s6_addr);
const uint8_t *b = reinterpret_cast<const uint8_t *>(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr);
for(unsigned int i=0;i<16;++i) {
if ((a[i] & m[i]) != b[i])
return false;
}
return true;
}
}
}
return false;
}
bool InetAddress::isNetwork() const
throw()
{
switch(ss_family) {
case AF_INET: {
unsigned int bits = netmaskBits();
if (bits <= 0)
return false;
if (bits >= 32)
return false;
uint32_t ip = Utils::ntoh((uint32_t)reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr);
return ((ip & (0xffffffff >> bits)) == 0);
}
case AF_INET6: {
unsigned int bits = netmaskBits();
if (bits <= 0)
return false;
if (bits >= 128)
return false;
const unsigned char *ip = reinterpret_cast<const unsigned char *>(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr);
unsigned int p = bits / 8;
if ((ip[p++] & (0xff >> (bits % 8))) != 0)
return false;
while (p < 16) {
if (ip[p++])
return false;
}
return true;
}
}
return false;
}
bool InetAddress::operator==(const InetAddress &a) const
throw()
{
if (ss_family == a.ss_family) {
switch(ss_family) {
case AF_INET:
return (
(reinterpret_cast<const struct sockaddr_in *>(this)->sin_port == reinterpret_cast<const struct sockaddr_in *>(&a)->sin_port)&&
(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr == reinterpret_cast<const struct sockaddr_in *>(&a)->sin_addr.s_addr));
break;
case AF_INET6:
return (
(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_port == reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_port)&&
(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_flowinfo == reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_flowinfo)&&
(memcmp(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_addr.s6_addr,16) == 0)&&
(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_scope_id == reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_scope_id));
break;
default:
return (memcmp(this,&a,sizeof(InetAddress)) == 0);
}
}
return false;
}
bool InetAddress::operator<(const InetAddress &a) const
throw()
{
if (ss_family < a.ss_family)
return true;
else if (ss_family == a.ss_family) {
switch(ss_family) {
case AF_INET:
if (reinterpret_cast<const struct sockaddr_in *>(this)->sin_port < reinterpret_cast<const struct sockaddr_in *>(&a)->sin_port)
return true;
else if (reinterpret_cast<const struct sockaddr_in *>(this)->sin_port == reinterpret_cast<const struct sockaddr_in *>(&a)->sin_port) {
if (reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr < reinterpret_cast<const struct sockaddr_in *>(&a)->sin_addr.s_addr)
return true;
}
break;
case AF_INET6:
if (reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_port < reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_port)
return true;
else if (reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_port == reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_port) {
if (reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_flowinfo < reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_flowinfo)
return true;
else if (reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_flowinfo == reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_flowinfo) {
if (memcmp(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_addr.s6_addr,16) < 0)
return true;
else if (memcmp(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_addr.s6_addr,16) == 0) {
if (reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_scope_id < reinterpret_cast<const struct sockaddr_in6 *>(&a)->sin6_scope_id)
return true;
}
}
}
break;
default:
return (memcmp(this,&a,sizeof(InetAddress)) < 0);
}
}
return false;
}
InetAddress InetAddress::makeIpv6LinkLocal(const MAC &mac)
{
struct sockaddr_in6 sin6;
sin6.sin6_family = AF_INET6;
sin6.sin6_addr.s6_addr[0] = 0xfe;
sin6.sin6_addr.s6_addr[1] = 0x80;
sin6.sin6_addr.s6_addr[2] = 0x00;
sin6.sin6_addr.s6_addr[3] = 0x00;
sin6.sin6_addr.s6_addr[4] = 0x00;
sin6.sin6_addr.s6_addr[5] = 0x00;
sin6.sin6_addr.s6_addr[6] = 0x00;
sin6.sin6_addr.s6_addr[7] = 0x00;
sin6.sin6_addr.s6_addr[8] = mac[0] & 0xfd;
sin6.sin6_addr.s6_addr[9] = mac[1];
sin6.sin6_addr.s6_addr[10] = mac[2];
sin6.sin6_addr.s6_addr[11] = 0xff;
sin6.sin6_addr.s6_addr[12] = 0xfe;
sin6.sin6_addr.s6_addr[13] = mac[3];
sin6.sin6_addr.s6_addr[14] = mac[4];
sin6.sin6_addr.s6_addr[15] = mac[5];
sin6.sin6_port = Utils::hton((uint16_t)64);
return InetAddress(sin6);
}
InetAddress InetAddress::makeIpv6rfc4193(uint64_t nwid,uint64_t zeroTierAddress)
{
InetAddress r;
struct sockaddr_in6 *const sin6 = reinterpret_cast<struct sockaddr_in6 *>(&r);
sin6->sin6_family = AF_INET6;
sin6->sin6_addr.s6_addr[0] = 0xfd;
sin6->sin6_addr.s6_addr[1] = (uint8_t)(nwid >> 56);
sin6->sin6_addr.s6_addr[2] = (uint8_t)(nwid >> 48);
sin6->sin6_addr.s6_addr[3] = (uint8_t)(nwid >> 40);
sin6->sin6_addr.s6_addr[4] = (uint8_t)(nwid >> 32);
sin6->sin6_addr.s6_addr[5] = (uint8_t)(nwid >> 24);
sin6->sin6_addr.s6_addr[6] = (uint8_t)(nwid >> 16);
sin6->sin6_addr.s6_addr[7] = (uint8_t)(nwid >> 8);
sin6->sin6_addr.s6_addr[8] = (uint8_t)nwid;
sin6->sin6_addr.s6_addr[9] = 0x99;
sin6->sin6_addr.s6_addr[10] = 0x93;
sin6->sin6_addr.s6_addr[11] = (uint8_t)(zeroTierAddress >> 32);
sin6->sin6_addr.s6_addr[12] = (uint8_t)(zeroTierAddress >> 24);
sin6->sin6_addr.s6_addr[13] = (uint8_t)(zeroTierAddress >> 16);
sin6->sin6_addr.s6_addr[14] = (uint8_t)(zeroTierAddress >> 8);
sin6->sin6_addr.s6_addr[15] = (uint8_t)zeroTierAddress;
sin6->sin6_port = Utils::hton((uint16_t)88); // /88 includes 0xfd + network ID, discriminating by device ID below that
return r;
}
InetAddress InetAddress::makeIpv66plane(uint64_t nwid,uint64_t zeroTierAddress)
{
nwid ^= (nwid >> 32);
InetAddress r;
struct sockaddr_in6 *const sin6 = reinterpret_cast<struct sockaddr_in6 *>(&r);
sin6->sin6_family = AF_INET6;
sin6->sin6_addr.s6_addr[0] = 0xfc;
sin6->sin6_addr.s6_addr[1] = (uint8_t)(nwid >> 24);
sin6->sin6_addr.s6_addr[2] = (uint8_t)(nwid >> 16);
sin6->sin6_addr.s6_addr[3] = (uint8_t)(nwid >> 8);
sin6->sin6_addr.s6_addr[4] = (uint8_t)nwid;
sin6->sin6_addr.s6_addr[5] = (uint8_t)(zeroTierAddress >> 32);
sin6->sin6_addr.s6_addr[6] = (uint8_t)(zeroTierAddress >> 24);
sin6->sin6_addr.s6_addr[7] = (uint8_t)(zeroTierAddress >> 16);
sin6->sin6_addr.s6_addr[8] = (uint8_t)(zeroTierAddress >> 8);
sin6->sin6_addr.s6_addr[9] = (uint8_t)zeroTierAddress;
sin6->sin6_addr.s6_addr[15] = 0x01;
sin6->sin6_port = Utils::hton((uint16_t)40);
return r;
}
} // namespace ZeroTier
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