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 "config/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;
84 CNetAddr(const struct in6_addr& pipv6Addr);
85 bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
87 friend bool operator==(const CNetAddr& a, const CNetAddr& b);
88 friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
89 friend bool operator<(const CNetAddr& a, const CNetAddr& b);
91 ADD_SERIALIZE_METHODS;
93 template <typename Stream, typename Operation>
94 inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
95 READWRITE(FLATDATA(ip));
102 /// Network (base) address
104 /// Netmask, in network byte order
106 /// Is this value valid? (only used to signal parse errors)
111 explicit CSubNet(const std::string &strSubnet, bool fAllowLookup = false);
113 bool Match(const CNetAddr &addr) const;
115 std::string ToString() const;
116 bool IsValid() const;
118 friend bool operator==(const CSubNet& a, const CSubNet& b);
119 friend bool operator!=(const CSubNet& a, const CSubNet& b);
122 /** A combination of a network address (CNetAddr) and a (TCP) port */
123 class CService : public CNetAddr
126 unsigned short port; // host order
130 CService(const CNetAddr& ip, unsigned short port);
131 CService(const struct in_addr& ipv4Addr, unsigned short port);
132 CService(const struct sockaddr_in& addr);
133 explicit CService(const char *pszIpPort, int portDefault, bool fAllowLookup = false);
134 explicit CService(const char *pszIpPort, bool fAllowLookup = false);
135 explicit CService(const std::string& strIpPort, int portDefault, bool fAllowLookup = false);
136 explicit CService(const std::string& strIpPort, bool fAllowLookup = false);
138 void SetPort(unsigned short portIn);
139 unsigned short GetPort() const;
140 bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
141 bool SetSockAddr(const struct sockaddr* paddr);
142 friend bool operator==(const CService& a, const CService& b);
143 friend bool operator!=(const CService& a, const CService& b);
144 friend bool operator<(const CService& a, const CService& b);
145 std::vector<unsigned char> GetKey() const;
146 std::string ToString() const;
147 std::string ToStringPort() const;
148 std::string ToStringIPPort() const;
150 CService(const struct in6_addr& ipv6Addr, unsigned short port);
151 CService(const struct sockaddr_in6& addr);
153 ADD_SERIALIZE_METHODS;
155 template <typename Stream, typename Operation>
156 inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
157 READWRITE(FLATDATA(ip));
158 unsigned short portN = htons(port);
160 if (ser_action.ForRead())
165 typedef CService proxyType;
167 enum Network ParseNetwork(std::string net);
168 std::string GetNetworkName(enum Network net);
169 void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
170 bool SetProxy(enum Network net, CService addrProxy);
171 bool GetProxy(enum Network net, proxyType &proxyInfoOut);
172 bool IsProxy(const CNetAddr &addr);
173 bool SetNameProxy(CService addrProxy);
174 bool HaveNameProxy();
175 bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
176 bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
177 bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault = 0, bool fAllowLookup = true, unsigned int nMaxSolutions = 0);
178 bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
179 bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout = nConnectTimeout);
180 bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault = 0, int nTimeout = nConnectTimeout);
181 /** Return readable error string for a network error code */
182 std::string NetworkErrorString(int err);
183 /** Close socket and set hSocket to INVALID_SOCKET */
184 bool CloseSocket(SOCKET& hSocket);
185 /** Disable or enable blocking-mode for a socket */
186 bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking);
188 #endif // BITCOIN_NETBASE_H