186 lines
6.9 KiB
C++
186 lines
6.9 KiB
C++
// Copyright (c) 2009-2013 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_NETBASE_H
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#define BITCOIN_NETBASE_H
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#if defined(HAVE_CONFIG_H)
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#include "config/bitcoin-config.h"
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#endif
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#include "compat.h"
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#include "serialize.h"
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#include <stdint.h>
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#include <string>
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#include <vector>
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extern int nConnectTimeout;
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extern bool fNameLookup;
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#ifdef WIN32
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// In MSVC, this is defined as a macro, undefine it to prevent a compile and link error
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#undef SetPort
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#endif
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enum Network
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{
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NET_UNROUTABLE,
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NET_IPV4,
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NET_IPV6,
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NET_TOR,
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NET_MAX,
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};
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/** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */
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class CNetAddr
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{
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protected:
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unsigned char ip[16]; // in network byte order
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public:
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CNetAddr();
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CNetAddr(const struct in_addr& ipv4Addr);
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explicit CNetAddr(const char *pszIp, bool fAllowLookup = false);
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explicit CNetAddr(const std::string &strIp, bool fAllowLookup = false);
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void Init();
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void SetIP(const CNetAddr& ip);
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/**
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* Set raw IPv4 or IPv6 address (in network byte order)
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* @note Only NET_IPV4 and NET_IPV6 are allowed for network.
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*/
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void SetRaw(Network network, const uint8_t *data);
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bool SetSpecial(const std::string &strName); // for Tor addresses
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bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
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bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor)
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bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
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bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
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bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
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bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
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bool IsRFC4193() const; // IPv6 unique local (FC00::/7)
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bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
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bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
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bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
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bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
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bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96)
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bool IsTor() const;
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bool IsLocal() const;
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bool IsRoutable() const;
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bool IsValid() const;
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bool IsMulticast() const;
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enum Network GetNetwork() const;
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std::string ToString() const;
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std::string ToStringIP() const;
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unsigned int GetByte(int n) const;
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uint64_t GetHash() const;
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bool GetInAddr(struct in_addr* pipv4Addr) const;
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std::vector<unsigned char> GetGroup() const;
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int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
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void print() const;
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CNetAddr(const struct in6_addr& pipv6Addr);
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bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
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friend bool operator==(const CNetAddr& a, const CNetAddr& b);
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friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
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friend bool operator<(const CNetAddr& a, const CNetAddr& b);
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IMPLEMENT_SERIALIZE
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(
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READWRITE(FLATDATA(ip));
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)
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};
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class CSubNet
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{
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protected:
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/// Network (base) address
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CNetAddr network;
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/// Netmask, in network byte order
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uint8_t netmask[16];
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/// Is this value valid? (only used to signal parse errors)
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bool valid;
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public:
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CSubNet();
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explicit CSubNet(const std::string &strSubnet, bool fAllowLookup = false);
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bool Match(const CNetAddr &addr) const;
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std::string ToString() const;
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bool IsValid() const;
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friend bool operator==(const CSubNet& a, const CSubNet& b);
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friend bool operator!=(const CSubNet& a, const CSubNet& b);
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};
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/** A combination of a network address (CNetAddr) and a (TCP) port */
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class CService : public CNetAddr
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{
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protected:
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unsigned short port; // host order
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public:
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CService();
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CService(const CNetAddr& ip, unsigned short port);
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CService(const struct in_addr& ipv4Addr, unsigned short port);
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CService(const struct sockaddr_in& addr);
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explicit CService(const char *pszIpPort, int portDefault, bool fAllowLookup = false);
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explicit CService(const char *pszIpPort, bool fAllowLookup = false);
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explicit CService(const std::string& strIpPort, int portDefault, bool fAllowLookup = false);
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explicit CService(const std::string& strIpPort, bool fAllowLookup = false);
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void Init();
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void SetPort(unsigned short portIn);
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unsigned short GetPort() const;
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bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
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bool SetSockAddr(const struct sockaddr* paddr);
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friend bool operator==(const CService& a, const CService& b);
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friend bool operator!=(const CService& a, const CService& b);
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friend bool operator<(const CService& a, const CService& b);
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std::vector<unsigned char> GetKey() const;
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std::string ToString() const;
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std::string ToStringPort() const;
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std::string ToStringIPPort() const;
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void print() const;
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CService(const struct in6_addr& ipv6Addr, unsigned short port);
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CService(const struct sockaddr_in6& addr);
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IMPLEMENT_SERIALIZE
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(
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CService* pthis = const_cast<CService*>(this);
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READWRITE(FLATDATA(ip));
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unsigned short portN = htons(port);
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READWRITE(portN);
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if (fRead)
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pthis->port = ntohs(portN);
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)
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};
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typedef CService proxyType;
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enum Network ParseNetwork(std::string net);
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void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
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bool SetProxy(enum Network net, CService addrProxy);
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bool GetProxy(enum Network net, proxyType &proxyInfoOut);
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bool IsProxy(const CNetAddr &addr);
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bool SetNameProxy(CService addrProxy);
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bool HaveNameProxy();
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bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
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bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
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bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault = 0, bool fAllowLookup = true, unsigned int nMaxSolutions = 0);
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bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
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bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout = nConnectTimeout);
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bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault = 0, int nTimeout = nConnectTimeout);
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/** Return readable error string for a network error code */
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std::string NetworkErrorString(int err);
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/** Close socket and set hSocket to INVALID_SOCKET */
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bool CloseSocket(SOCKET& hSocket);
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/** Disable or enable blocking-mode for a socket */
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bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking);
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#endif
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