1 // Copyright (c) 2009-2013 The Bitcoin developers
2 // Distributed under the MIT/X11 software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 #ifndef BITCOIN_NETBASE_H
6 #define BITCOIN_NETBASE_H
8 #if defined(HAVE_CONFIG_H)
9 #include "bitcoin-config.h"
13 #include "serialize.h"
19 extern int nConnectTimeout;
20 extern bool fNameLookup;
23 // In MSVC, this is defined as a macro, undefine it to prevent a compile and link error
37 /** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */
41 unsigned char ip[16]; // in network byte order
45 CNetAddr(const struct in_addr& ipv4Addr);
46 explicit CNetAddr(const char *pszIp, bool fAllowLookup = false);
47 explicit CNetAddr(const std::string &strIp, bool fAllowLookup = false);
49 void SetIP(const CNetAddr& ip);
52 * Set raw IPv4 or IPv6 address (in network byte order)
53 * @note Only NET_IPV4 and NET_IPV6 are allowed for network.
55 void SetRaw(Network network, const uint8_t *data);
57 bool SetSpecial(const std::string &strName); // for Tor addresses
58 bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
59 bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor)
60 bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
61 bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
62 bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
63 bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
64 bool IsRFC4193() const; // IPv6 unique local (FC00::/7)
65 bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
66 bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
67 bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
68 bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
69 bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96)
72 bool IsRoutable() const;
74 bool IsMulticast() const;
75 enum Network GetNetwork() const;
76 std::string ToString() const;
77 std::string ToStringIP() const;
78 unsigned int GetByte(int n) const;
79 uint64_t GetHash() const;
80 bool GetInAddr(struct in_addr* pipv4Addr) const;
81 std::vector<unsigned char> GetGroup() const;
82 int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
85 CNetAddr(const struct in6_addr& pipv6Addr);
86 bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
88 friend bool operator==(const CNetAddr& a, const CNetAddr& b);
89 friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
90 friend bool operator<(const CNetAddr& a, const CNetAddr& b);
94 READWRITE(FLATDATA(ip));
101 /// Network (base) address
103 /// Netmask, in network byte order
105 /// Is this value valid? (only used to signal parse errors)
110 explicit CSubNet(const std::string &strSubnet, bool fAllowLookup = false);
112 bool Match(const CNetAddr &addr) const;
114 std::string ToString() const;
115 bool IsValid() const;
117 friend bool operator==(const CSubNet& a, const CSubNet& b);
118 friend bool operator!=(const CSubNet& a, const CSubNet& b);
121 /** A combination of a network address (CNetAddr) and a (TCP) port */
122 class CService : public CNetAddr
125 unsigned short port; // host order
129 CService(const CNetAddr& ip, unsigned short port);
130 CService(const struct in_addr& ipv4Addr, unsigned short port);
131 CService(const struct sockaddr_in& addr);
132 explicit CService(const char *pszIpPort, int portDefault, bool fAllowLookup = false);
133 explicit CService(const char *pszIpPort, bool fAllowLookup = false);
134 explicit CService(const std::string& strIpPort, int portDefault, bool fAllowLookup = false);
135 explicit CService(const std::string& strIpPort, bool fAllowLookup = false);
137 void SetPort(unsigned short portIn);
138 unsigned short GetPort() const;
139 bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
140 bool SetSockAddr(const struct sockaddr* paddr);
141 friend bool operator==(const CService& a, const CService& b);
142 friend bool operator!=(const CService& a, const CService& b);
143 friend bool operator<(const CService& a, const CService& b);
144 std::vector<unsigned char> GetKey() const;
145 std::string ToString() const;
146 std::string ToStringPort() const;
147 std::string ToStringIPPort() const;
150 CService(const struct in6_addr& ipv6Addr, unsigned short port);
151 CService(const struct sockaddr_in6& addr);
155 CService* pthis = const_cast<CService*>(this);
156 READWRITE(FLATDATA(ip));
157 unsigned short portN = htons(port);
160 pthis->port = ntohs(portN);
164 typedef std::pair<CService, int> proxyType;
166 enum Network ParseNetwork(std::string net);
167 void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
168 bool SetProxy(enum Network net, CService addrProxy, int nSocksVersion = 5);
169 bool GetProxy(enum Network net, proxyType &proxyInfoOut);
170 bool IsProxy(const CNetAddr &addr);
171 bool SetNameProxy(CService addrProxy, int nSocksVersion = 5);
172 bool HaveNameProxy();
173 bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
174 bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
175 bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault = 0, bool fAllowLookup = true, unsigned int nMaxSolutions = 0);
176 bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
177 bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout = nConnectTimeout);
178 bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault = 0, int nTimeout = nConnectTimeout);
179 /** Return readable error string for a network error code */
180 std::string NetworkErrorString(int err);