1 // Copyright (c) 2009-2013 The Bitcoin Core developers
2 // Distributed under the MIT 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;
22 /** -timeout default */
23 static const int DEFAULT_CONNECT_TIMEOUT = 5000;
26 // In MSVC, this is defined as a macro, undefine it to prevent a compile and link error
40 /** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */
44 unsigned char ip[16]; // in network byte order
48 CNetAddr(const struct in_addr& ipv4Addr);
49 explicit CNetAddr(const char *pszIp, bool fAllowLookup = false);
50 explicit CNetAddr(const std::string &strIp, bool fAllowLookup = false);
52 void SetIP(const CNetAddr& ip);
55 * Set raw IPv4 or IPv6 address (in network byte order)
56 * @note Only NET_IPV4 and NET_IPV6 are allowed for network.
58 void SetRaw(Network network, const uint8_t *data);
60 bool SetSpecial(const std::string &strName); // for Tor addresses
61 bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
62 bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor)
63 bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
64 bool IsRFC2544() const; // IPv4 inter-network communcations (192.18.0.0/15)
65 bool IsRFC6598() const; // IPv4 ISP-level NAT (100.64.0.0/10)
66 bool IsRFC5737() const; // IPv4 documentation addresses (192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24)
67 bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
68 bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
69 bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
70 bool IsRFC4193() const; // IPv6 unique local (FC00::/7)
71 bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
72 bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
73 bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
74 bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
75 bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96)
78 bool IsRoutable() const;
80 bool IsMulticast() const;
81 enum Network GetNetwork() const;
82 std::string ToString() const;
83 std::string ToStringIP() const;
84 unsigned int GetByte(int n) const;
85 uint64_t GetHash() const;
86 bool GetInAddr(struct in_addr* pipv4Addr) const;
87 std::vector<unsigned char> GetGroup() const;
88 int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
90 CNetAddr(const struct in6_addr& pipv6Addr);
91 bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
93 friend bool operator==(const CNetAddr& a, const CNetAddr& b);
94 friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
95 friend bool operator<(const CNetAddr& a, const CNetAddr& b);
97 ADD_SERIALIZE_METHODS;
99 template <typename Stream, typename Operation>
100 inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
101 READWRITE(FLATDATA(ip));
104 friend class CSubNet;
110 /// Network (base) address
112 /// Netmask, in network byte order
114 /// Is this value valid? (only used to signal parse errors)
119 explicit CSubNet(const std::string &strSubnet, bool fAllowLookup = false);
121 bool Match(const CNetAddr &addr) const;
123 std::string ToString() const;
124 bool IsValid() const;
126 friend bool operator==(const CSubNet& a, const CSubNet& b);
127 friend bool operator!=(const CSubNet& a, const CSubNet& b);
130 /** A combination of a network address (CNetAddr) and a (TCP) port */
131 class CService : public CNetAddr
134 unsigned short port; // host order
138 CService(const CNetAddr& ip, unsigned short port);
139 CService(const struct in_addr& ipv4Addr, unsigned short port);
140 CService(const struct sockaddr_in& addr);
141 explicit CService(const char *pszIpPort, int portDefault, bool fAllowLookup = false);
142 explicit CService(const char *pszIpPort, bool fAllowLookup = false);
143 explicit CService(const std::string& strIpPort, int portDefault, bool fAllowLookup = false);
144 explicit CService(const std::string& strIpPort, bool fAllowLookup = false);
146 void SetPort(unsigned short portIn);
147 unsigned short GetPort() const;
148 bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
149 bool SetSockAddr(const struct sockaddr* paddr);
150 friend bool operator==(const CService& a, const CService& b);
151 friend bool operator!=(const CService& a, const CService& b);
152 friend bool operator<(const CService& a, const CService& b);
153 std::vector<unsigned char> GetKey() const;
154 std::string ToString() const;
155 std::string ToStringPort() const;
156 std::string ToStringIPPort() const;
158 CService(const struct in6_addr& ipv6Addr, unsigned short port);
159 CService(const struct sockaddr_in6& addr);
161 ADD_SERIALIZE_METHODS;
163 template <typename Stream, typename Operation>
164 inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
165 READWRITE(FLATDATA(ip));
166 unsigned short portN = htons(port);
167 READWRITE(FLATDATA(portN));
168 if (ser_action.ForRead())
176 proxyType(): randomize_credentials(false) {}
177 proxyType(const CService &proxy, bool randomize_credentials=false): proxy(proxy), randomize_credentials(randomize_credentials) {}
179 bool IsValid() const { return proxy.IsValid(); }
182 bool randomize_credentials;
185 enum Network ParseNetwork(std::string net);
186 std::string GetNetworkName(enum Network net);
187 void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
188 bool SetProxy(enum Network net, const proxyType &addrProxy);
189 bool GetProxy(enum Network net, proxyType &proxyInfoOut);
190 bool IsProxy(const CNetAddr &addr);
191 bool SetNameProxy(const proxyType &addrProxy);
192 bool HaveNameProxy();
193 bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
194 bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);
195 bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault = 0, bool fAllowLookup = true, unsigned int nMaxSolutions = 0);
196 bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
197 bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed = 0);
198 bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout, bool *outProxyConnectionFailed = 0);
199 /** Return readable error string for a network error code */
200 std::string NetworkErrorString(int err);
201 /** Close socket and set hSocket to INVALID_SOCKET */
202 bool CloseSocket(SOCKET& hSocket);
203 /** Disable or enable blocking-mode for a socket */
204 bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking);
206 #endif // BITCOIN_NETBASE_H