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Side by Side Diff: webrtc/base/ipaddress.h

Issue 2877023002: Move webrtc/{base => rtc_base} (Closed)
Patch Set: update presubmit.py and DEPS include rules Created 3 years, 5 months ago
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1 /* 1 /*
2 * Copyright 2011 The WebRTC Project Authors. All rights reserved. 2 * Copyright 2011 The WebRTC Project Authors. All rights reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source 5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
11 #ifndef WEBRTC_BASE_IPADDRESS_H_ 11 #ifndef WEBRTC_BASE_IPADDRESS_H_
12 #define WEBRTC_BASE_IPADDRESS_H_ 12 #define WEBRTC_BASE_IPADDRESS_H_
13 13
14 #if defined(WEBRTC_POSIX)
15 #include <netinet/in.h>
16 #include <sys/socket.h>
17 #include <arpa/inet.h>
18 #include <netdb.h>
19 #endif
20 #if defined(WEBRTC_WIN)
21 #include <winsock2.h>
22 #include <ws2tcpip.h>
23 #endif
24 #include <string.h>
25 #include <string>
26 #include <vector>
27 14
28 #include "webrtc/base/basictypes.h" 15 // This header is deprecated and is just left here temporarily during
29 #include "webrtc/base/byteorder.h" 16 // refactoring. See https://bugs.webrtc.org/7634 for more details.
30 #if defined(WEBRTC_WIN) 17 #include "webrtc/rtc_base/ipaddress.h"
31 #include "webrtc/base/win32.h"
32 #endif
33
34 namespace rtc {
35
36 enum IPv6AddressFlag {
37 IPV6_ADDRESS_FLAG_NONE = 0x00,
38
39 // Temporary address is dynamic by nature and will not carry MAC
40 // address.
41 IPV6_ADDRESS_FLAG_TEMPORARY = 1 << 0,
42
43 // Temporary address could become deprecated once the preferred
44 // lifetime is reached. It is still valid but just shouldn't be used
45 // to create new connection.
46 IPV6_ADDRESS_FLAG_DEPRECATED = 1 << 1,
47 };
48
49 // Version-agnostic IP address class, wraps a union of in_addr and in6_addr.
50 class IPAddress {
51 public:
52 IPAddress() : family_(AF_UNSPEC) {
53 ::memset(&u_, 0, sizeof(u_));
54 }
55
56 explicit IPAddress(const in_addr& ip4) : family_(AF_INET) {
57 memset(&u_, 0, sizeof(u_));
58 u_.ip4 = ip4;
59 }
60
61 explicit IPAddress(const in6_addr& ip6) : family_(AF_INET6) {
62 u_.ip6 = ip6;
63 }
64
65 explicit IPAddress(uint32_t ip_in_host_byte_order) : family_(AF_INET) {
66 memset(&u_, 0, sizeof(u_));
67 u_.ip4.s_addr = HostToNetwork32(ip_in_host_byte_order);
68 }
69
70 IPAddress(const IPAddress& other) : family_(other.family_) {
71 ::memcpy(&u_, &other.u_, sizeof(u_));
72 }
73
74 virtual ~IPAddress() {}
75
76 const IPAddress & operator=(const IPAddress& other) {
77 family_ = other.family_;
78 ::memcpy(&u_, &other.u_, sizeof(u_));
79 return *this;
80 }
81
82 bool operator==(const IPAddress& other) const;
83 bool operator!=(const IPAddress& other) const;
84 bool operator <(const IPAddress& other) const;
85 bool operator >(const IPAddress& other) const;
86 friend std::ostream& operator<<(std::ostream& os, const IPAddress& addr);
87
88 int family() const { return family_; }
89 in_addr ipv4_address() const;
90 in6_addr ipv6_address() const;
91
92 // Returns the number of bytes needed to store the raw address.
93 size_t Size() const;
94
95 // Wraps inet_ntop.
96 std::string ToString() const;
97
98 // Same as ToString but anonymizes it by hiding the last part.
99 std::string ToSensitiveString() const;
100
101 // Returns an unmapped address from a possibly-mapped address.
102 // Returns the same address if this isn't a mapped address.
103 IPAddress Normalized() const;
104
105 // Returns this address as an IPv6 address.
106 // Maps v4 addresses (as ::ffff:a.b.c.d), returns v6 addresses unchanged.
107 IPAddress AsIPv6Address() const;
108
109 // For socketaddress' benefit. Returns the IP in host byte order.
110 uint32_t v4AddressAsHostOrderInteger() const;
111
112 // Whether this is an unspecified IP address.
113 bool IsNil() const;
114
115 private:
116 int family_;
117 union {
118 in_addr ip4;
119 in6_addr ip6;
120 } u_;
121 };
122
123 // IP class which could represent IPv6 address flags which is only
124 // meaningful in IPv6 case.
125 class InterfaceAddress : public IPAddress {
126 public:
127 InterfaceAddress() : ipv6_flags_(IPV6_ADDRESS_FLAG_NONE) {}
128
129 InterfaceAddress(IPAddress ip)
130 : IPAddress(ip), ipv6_flags_(IPV6_ADDRESS_FLAG_NONE) {}
131
132 InterfaceAddress(IPAddress addr, int ipv6_flags)
133 : IPAddress(addr), ipv6_flags_(ipv6_flags) {}
134
135 InterfaceAddress(const in6_addr& ip6, int ipv6_flags)
136 : IPAddress(ip6), ipv6_flags_(ipv6_flags) {}
137
138 const InterfaceAddress & operator=(const InterfaceAddress& other);
139
140 bool operator==(const InterfaceAddress& other) const;
141 bool operator!=(const InterfaceAddress& other) const;
142
143 int ipv6_flags() const { return ipv6_flags_; }
144 friend std::ostream& operator<<(std::ostream& os,
145 const InterfaceAddress& addr);
146
147 private:
148 int ipv6_flags_;
149 };
150
151 bool IPFromAddrInfo(struct addrinfo* info, IPAddress* out);
152 bool IPFromString(const std::string& str, IPAddress* out);
153 bool IPFromString(const std::string& str, int flags,
154 InterfaceAddress* out);
155 bool IPIsAny(const IPAddress& ip);
156 bool IPIsLoopback(const IPAddress& ip);
157 bool IPIsPrivate(const IPAddress& ip);
158 bool IPIsUnspec(const IPAddress& ip);
159 size_t HashIP(const IPAddress& ip);
160
161 // These are only really applicable for IPv6 addresses.
162 bool IPIs6Bone(const IPAddress& ip);
163 bool IPIs6To4(const IPAddress& ip);
164 bool IPIsLinkLocal(const IPAddress& ip);
165 bool IPIsMacBased(const IPAddress& ip);
166 bool IPIsSiteLocal(const IPAddress& ip);
167 bool IPIsTeredo(const IPAddress& ip);
168 bool IPIsULA(const IPAddress& ip);
169 bool IPIsV4Compatibility(const IPAddress& ip);
170 bool IPIsV4Mapped(const IPAddress& ip);
171
172 // Returns the precedence value for this IP as given in RFC3484.
173 int IPAddressPrecedence(const IPAddress& ip);
174
175 // Returns 'ip' truncated to be 'length' bits long.
176 IPAddress TruncateIP(const IPAddress& ip, int length);
177
178 IPAddress GetLoopbackIP(int family);
179 IPAddress GetAnyIP(int family);
180
181 // Returns the number of contiguously set bits, counting from the MSB in network
182 // byte order, in this IPAddress. Bits after the first 0 encountered are not
183 // counted.
184 int CountIPMaskBits(IPAddress mask);
185
186 } // namespace rtc
187 18
188 #endif // WEBRTC_BASE_IPADDRESS_H_ 19 #endif // WEBRTC_BASE_IPADDRESS_H_
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