mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-23 14:52:24 +00:00
369 lines
9.7 KiB
C++
369 lines
9.7 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2015 ZeroTier, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef ZT_INETADDRESS_HPP
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#define ZT_INETADDRESS_HPP
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <string>
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#include "Constants.hpp"
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#include "../include/ZeroTierOne.h"
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#include "Utils.hpp"
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#include "MAC.hpp"
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namespace ZeroTier {
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/**
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* Extends sockaddr_storage with friendly C++ methods
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*
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* This adds no new fields, so it can be memcpy'd and assigned to/from
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* raw sockaddr_storage structures. This is used in a few places.
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*/
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struct InetAddress : public sockaddr_storage
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{
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/**
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* Loopback IPv4 address (no port)
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*/
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static const InetAddress LO4;
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/**
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* Loopback IPV6 address (no port)
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*/
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static const InetAddress LO6;
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/**
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* 0.0.0.0/0
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*/
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static const InetAddress DEFAULT4;
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/**
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* ::/0
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*/
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static const InetAddress DEFAULT6;
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InetAddress() throw() { memset(this,0,sizeof(InetAddress)); }
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InetAddress(const InetAddress &a) throw() { memcpy(this,&a,sizeof(InetAddress)); }
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InetAddress(const struct sockaddr_storage &ss) throw() { *this = ss; }
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InetAddress(const struct sockaddr_storage *ss) throw() { *this = ss; }
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InetAddress(const struct sockaddr &sa) throw() { *this = sa; }
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InetAddress(const struct sockaddr *sa) throw() { *this = sa; }
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InetAddress(const struct sockaddr_in &sa) throw() { *this = sa; }
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InetAddress(const struct sockaddr_in *sa) throw() { *this = sa; }
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InetAddress(const struct sockaddr_in6 &sa) throw() { *this = sa; }
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InetAddress(const struct sockaddr_in6 *sa) throw() { *this = sa; }
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InetAddress(const void *ipBytes,unsigned int ipLen,unsigned int port) throw() { this->set(ipBytes,ipLen,port); }
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InetAddress(const uint32_t ipv4,unsigned int port) throw() { this->set(&ipv4,4,port); }
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InetAddress(const std::string &ip,unsigned int port) throw() { this->set(ip,port); }
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InetAddress(const std::string &ipSlashPort) throw() { this->fromString(ipSlashPort); }
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InetAddress(const char *ipSlashPort) throw() { this->fromString(std::string(ipSlashPort)); }
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inline InetAddress &operator=(const InetAddress &a)
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throw()
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{
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memcpy(this,&a,sizeof(InetAddress));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr_storage &ss)
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throw()
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{
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memcpy(this,&ss,sizeof(InetAddress));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr_storage *ss)
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throw()
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{
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memcpy(this,ss,sizeof(InetAddress));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr_in &sa)
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throw()
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{
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memset(this,0,sizeof(InetAddress));
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memcpy(this,&sa,sizeof(struct sockaddr_in));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr_in *sa)
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throw()
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{
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memset(this,0,sizeof(InetAddress));
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memcpy(this,sa,sizeof(struct sockaddr_in));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr_in6 &sa)
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throw()
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{
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memset(this,0,sizeof(InetAddress));
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memcpy(this,&sa,sizeof(struct sockaddr_in6));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr_in6 *sa)
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throw()
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{
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memset(this,0,sizeof(InetAddress));
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memcpy(this,sa,sizeof(struct sockaddr_in6));
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr &sa)
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throw()
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{
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memset(this,0,sizeof(InetAddress));
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switch(sa.sa_family) {
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case AF_INET:
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memcpy(this,&sa,sizeof(struct sockaddr_in));
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break;
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case AF_INET6:
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memcpy(this,&sa,sizeof(struct sockaddr_in6));
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break;
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}
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return *this;
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}
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inline InetAddress &operator=(const struct sockaddr *sa)
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throw()
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{
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memset(this,0,sizeof(InetAddress));
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switch(sa->sa_family) {
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case AF_INET:
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memcpy(this,sa,sizeof(struct sockaddr_in));
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break;
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case AF_INET6:
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memcpy(this,sa,sizeof(struct sockaddr_in6));
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break;
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}
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return *this;
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}
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/**
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* Set from a string-format IP and a port
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*
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* @param ip IP address in V4 or V6 ASCII notation
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* @param port Port or 0 for none
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*/
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void set(const std::string &ip,unsigned int port)
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throw();
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/**
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* Set from a raw IP and port number
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*
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* @param ipBytes Bytes of IP address in network byte order
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* @param ipLen Length of IP address: 4 or 16
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* @param port Port number or 0 for none
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*/
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void set(const void *ipBytes,unsigned int ipLen,unsigned int port)
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throw();
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/**
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* Set the port component
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*
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* @param port Port, 0 to 65535
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*/
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inline void setPort(unsigned int port)
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throw()
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{
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switch(ss_family) {
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case AF_INET:
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reinterpret_cast<struct sockaddr_in *>(this)->sin_port = Utils::hton((uint16_t)port);
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break;
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case AF_INET6:
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reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_port = Utils::hton((uint16_t)port);
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break;
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}
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}
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/**
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* @return True if this is a link-local IP address
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*/
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bool isLinkLocal() const
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throw();
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/**
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* @return True if this is a loopback address
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*/
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inline bool isLoopback() const throw() { return ((*this == LO4)||(*this == LO6)); }
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/**
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* @return ASCII IP/port format representation
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*/
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std::string toString() const;
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/**
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* @return IP portion only, in ASCII string format
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*/
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std::string toIpString() const;
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/**
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* @param ipSlashPort ASCII IP/port format notation
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*/
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void fromString(const std::string &ipSlashPort);
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/**
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* @return Port or 0 if no port component defined
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*/
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inline unsigned int port() const
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throw()
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{
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switch(ss_family) {
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case AF_INET: return Utils::ntoh((uint16_t)(reinterpret_cast<const struct sockaddr_in *>(this)->sin_port));
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case AF_INET6: return Utils::ntoh((uint16_t)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_port));
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default: return 0;
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}
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}
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/**
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* Alias for port()
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*
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* This just aliases port() to make code more readable when netmask bits
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* are stuffed there, as they are in Network, EthernetTap, and a few other
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* spots.
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*
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* @return Netmask bits
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*/
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inline unsigned int netmaskBits() const throw() { return port(); }
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/**
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* Construct a full netmask as an InetAddress
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*/
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InetAddress netmask() const
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throw();
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/**
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* Constructs a broadcast address from a network/netmask address
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*
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* @return Broadcast address (only IP portion is meaningful)
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*/
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InetAddress broadcast() const
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throw();
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/**
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* @return True if this is an IPv4 address
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*/
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inline bool isV4() const throw() { return (ss_family == AF_INET); }
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/**
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* @return True if this is an IPv6 address
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*/
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inline bool isV6() const throw() { return (ss_family == AF_INET6); }
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/**
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* Force type to IPv4
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*/
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inline void setV4() throw() { ss_family = AF_INET; }
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/**
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* Force type to IPv6
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*/
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inline void setV6() throw() { ss_family = AF_INET6; }
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/**
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* @return Length of sockaddr_in if IPv4, sockaddr_in6 if IPv6
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*/
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inline unsigned int saddrLen() const
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throw()
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{
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switch(ss_family) {
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case AF_INET: return sizeof(struct sockaddr_in);
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case AF_INET6: return sizeof(struct sockaddr_in6);
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default: return 0;
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}
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}
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/**
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* @return Raw sockaddr_in structure (valid if IPv4)
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*/
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inline const struct sockaddr_in *saddr4() const throw() { return reinterpret_cast<const struct sockaddr_in *>(this); }
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/**
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* @return Raw sockaddr_in6 structure (valid if IPv6)
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*/
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inline const struct sockaddr_in6 *saddr6() const throw() { return reinterpret_cast<const struct sockaddr_in6 *>(this); }
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/**
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* @return pointer to raw IP address bytes
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*/
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inline const void *rawIpData() const
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throw()
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{
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switch(ss_family) {
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case AF_INET: return (const void *)&(reinterpret_cast<const struct sockaddr_in *>(this)->sin_addr.s_addr);
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case AF_INET6: return (const void *)(reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr);
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default: return 0;
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}
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}
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/**
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* @return pointer to raw IP address bytes
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*/
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inline void *rawIpData()
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throw()
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{
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switch(ss_family) {
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case AF_INET: return (void *)&(reinterpret_cast<struct sockaddr_in *>(this)->sin_addr.s_addr);
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case AF_INET6: return (void *)(reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_addr.s6_addr);
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default: return 0;
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}
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}
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/**
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* Set to null/zero
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*/
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inline void zero() throw() { memset(this,0,sizeof(InetAddress)); }
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/**
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* @return True if address family is non-zero
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*/
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inline operator bool() const throw() { return (ss_family != 0); }
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inline bool operator==(const InetAddress &a) const throw() { return (memcmp(this,&a,sizeof(InetAddress)) == 0); }
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inline bool operator!=(const InetAddress &a) const throw() { return !(*this == a); }
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inline bool operator<(const InetAddress &a) const throw() { return (memcmp(this,&a,sizeof(InetAddress)) < 0); }
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inline bool operator>(const InetAddress &a) const throw() { return (a < *this); }
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inline bool operator<=(const InetAddress &a) const throw() { return !(a < *this); }
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inline bool operator>=(const InetAddress &a) const throw() { return !(*this < a); }
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/**
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* @param mac MAC address seed
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* @return IPv6 link-local address
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*/
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static InetAddress makeIpv6LinkLocal(const MAC &mac)
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throw();
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};
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} // namespace ZeroTier
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#endif
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