-
Notifications
You must be signed in to change notification settings - Fork 29
/
netbase.h
226 lines (190 loc) · 8.38 KB
/
netbase.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
// Copyright (c) 2009-2015 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_NETBASE_H
#define BITCOIN_NETBASE_H
#if defined(HAVE_CONFIG_H)
#include "config/bitcoin-config.h"
#endif
#include "compat.h"
#include "serialize.h"
#include <stdint.h>
#include <string>
#include <vector>
extern int nConnectTimeout;
extern bool fNameLookup;
//! -timeout default
static const int DEFAULT_CONNECT_TIMEOUT = 5000;
//! -dns default
static const int DEFAULT_NAME_LOOKUP = true;
#ifdef WIN32
// In MSVC, this is defined as a macro, undefine it to prevent a compile and link error
#undef SetPort
#endif
enum Network
{
NET_UNROUTABLE = 0,
NET_IPV4,
NET_IPV6,
NET_TOR,
NET_MAX,
};
/** IP address (IPv6, or IPv4 using mapped IPv6 range (::FFFF:0:0/96)) */
class CNetAddr
{
protected:
unsigned char ip[16]; // in network byte order
uint32_t scopeId; // for scoped/link-local ipv6 addresses
public:
CNetAddr();
CNetAddr(const struct in_addr& ipv4Addr);
explicit CNetAddr(const char *pszIp);
explicit CNetAddr(const std::string &strIp);
void Init();
void SetIP(const CNetAddr& ip);
/**
* Set raw IPv4 or IPv6 address (in network byte order)
* @note Only NET_IPV4 and NET_IPV6 are allowed for network.
*/
void SetRaw(Network network, const uint8_t *data);
bool SetSpecial(const std::string &strName); // for Tor addresses
bool IsIPv4() const; // IPv4 mapped address (::FFFF:0:0/96, 0.0.0.0/0)
bool IsIPv6() const; // IPv6 address (not mapped IPv4, not Tor)
bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
bool IsRFC2544() const; // IPv4 inter-network communcations (192.18.0.0/15)
bool IsRFC6598() const; // IPv4 ISP-level NAT (100.64.0.0/10)
bool IsRFC5737() const; // IPv4 documentation addresses (192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24)
bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
bool IsRFC4193() const; // IPv6 unique local (FC00::/7)
bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
bool IsRFC6145() const; // IPv6 IPv4-translated address (::FFFF:0:0:0/96)
bool IsTor() const;
bool IsLocal() const;
bool IsRoutable() const;
bool IsValid() const;
bool IsMulticast() const;
enum Network GetNetwork() const;
std::string ToString() const;
std::string ToStringIP() const;
unsigned int GetByte(int n) const;
uint64_t GetHash() const;
bool GetInAddr(struct in_addr* pipv4Addr) const;
std::vector<unsigned char> GetGroup() const;
int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
CNetAddr(const struct in6_addr& pipv6Addr, const uint32_t scope = 0);
bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
friend bool operator==(const CNetAddr& a, const CNetAddr& b);
friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
friend bool operator<(const CNetAddr& a, const CNetAddr& b);
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
READWRITE(FLATDATA(ip));
}
friend class CSubNet;
};
class CSubNet
{
protected:
/// Network (base) address
CNetAddr network;
/// Netmask, in network byte order
uint8_t netmask[16];
/// Is this value valid? (only used to signal parse errors)
bool valid;
public:
CSubNet();
explicit CSubNet(const std::string &strSubnet);
//constructor for single ip subnet (<ipv4>/32 or <ipv6>/128)
explicit CSubNet(const CNetAddr &addr);
bool Match(const CNetAddr &addr) const;
std::string ToString() const;
bool IsValid() const;
friend bool operator==(const CSubNet& a, const CSubNet& b);
friend bool operator!=(const CSubNet& a, const CSubNet& b);
friend bool operator<(const CSubNet& a, const CSubNet& b);
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
READWRITE(network);
READWRITE(FLATDATA(netmask));
READWRITE(FLATDATA(valid));
}
};
/** A combination of a network address (CNetAddr) and a (TCP) port */
class CService : public CNetAddr
{
protected:
unsigned short port; // host order
public:
CService();
CService(const CNetAddr& ip, unsigned short port);
CService(const struct in_addr& ipv4Addr, unsigned short port);
CService(const struct sockaddr_in& addr);
explicit CService(const char *pszIpPort, int portDefault);
explicit CService(const char *pszIpPort);
explicit CService(const std::string& strIpPort, int portDefault);
explicit CService(const std::string& strIpPort);
void Init();
void SetPort(unsigned short portIn);
unsigned short GetPort() const;
bool GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const;
bool SetSockAddr(const struct sockaddr* paddr);
friend bool operator==(const CService& a, const CService& b);
friend bool operator!=(const CService& a, const CService& b);
friend bool operator<(const CService& a, const CService& b);
std::vector<unsigned char> GetKey() const;
std::string ToString() const;
std::string ToStringPort() const;
std::string ToStringIPPort() const;
CService(const struct in6_addr& ipv6Addr, unsigned short port);
CService(const struct sockaddr_in6& addr);
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action, int nType, int nVersion) {
READWRITE(FLATDATA(ip));
unsigned short portN = htons(port);
READWRITE(FLATDATA(portN));
if (ser_action.ForRead())
port = ntohs(portN);
}
};
class proxyType
{
public:
proxyType(): randomize_credentials(false) {}
proxyType(const CService &proxy, bool randomize_credentials=false): proxy(proxy), randomize_credentials(randomize_credentials) {}
bool IsValid() const { return proxy.IsValid(); }
CService proxy;
bool randomize_credentials;
};
enum Network ParseNetwork(std::string net);
std::string GetNetworkName(enum Network net);
void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
bool SetProxy(enum Network net, const proxyType &addrProxy);
bool GetProxy(enum Network net, proxyType &proxyInfoOut);
bool IsProxy(const CNetAddr &addr);
bool SetNameProxy(const proxyType &addrProxy);
bool HaveNameProxy();
bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup);
bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup);
bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions);
bool LookupNumeric(const char *pszName, CService& addr, int portDefault = 0);
bool ConnectSocket(const CService &addr, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed = 0);
bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout, bool *outProxyConnectionFailed = 0);
/** Return readable error string for a network error code */
std::string NetworkErrorString(int err);
/** Close socket and set hSocket to INVALID_SOCKET */
bool CloseSocket(SOCKET& hSocket);
/** Disable or enable blocking-mode for a socket */
bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking);
/**
* Convert milliseconds to a struct timeval for e.g. select.
*/
struct timeval MillisToTimeval(int64_t nTimeout);
#endif // BITCOIN_NETBASE_H