| /* |
| * Copyright 2011 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_BASE_IPADDRESS_H_ |
| #define WEBRTC_BASE_IPADDRESS_H_ |
| |
| #if defined(WEBRTC_POSIX) |
| #include <netinet/in.h> |
| #include <sys/socket.h> |
| #include <arpa/inet.h> |
| #include <netdb.h> |
| #endif |
| #if defined(WEBRTC_WIN) |
| #include <winsock2.h> |
| #include <ws2tcpip.h> |
| #endif |
| #include <string.h> |
| #include <string> |
| #include <vector> |
| |
| #include "webrtc/base/basictypes.h" |
| #include "webrtc/base/byteorder.h" |
| #if defined(WEBRTC_WIN) |
| #include "webrtc/base/win32.h" |
| #endif |
| |
| namespace rtc { |
| |
| enum IPv6AddressFlag { |
| IPV6_ADDRESS_FLAG_NONE = 0x00, |
| |
| // Temporary address is dynamic by nature and will not carry MAC |
| // address. |
| IPV6_ADDRESS_FLAG_TEMPORARY = 1 << 0, |
| |
| // Temporary address could become deprecated once the preferred |
| // lifetime is reached. It is still valid but just shouldn't be used |
| // to create new connection. |
| IPV6_ADDRESS_FLAG_DEPRECATED = 1 << 1, |
| }; |
| |
| // Version-agnostic IP address class, wraps a union of in_addr and in6_addr. |
| class IPAddress { |
| public: |
| IPAddress() : family_(AF_UNSPEC) { |
| ::memset(&u_, 0, sizeof(u_)); |
| } |
| |
| explicit IPAddress(const in_addr& ip4) : family_(AF_INET) { |
| memset(&u_, 0, sizeof(u_)); |
| u_.ip4 = ip4; |
| } |
| |
| explicit IPAddress(const in6_addr& ip6) : family_(AF_INET6) { |
| u_.ip6 = ip6; |
| } |
| |
| explicit IPAddress(uint32_t ip_in_host_byte_order) : family_(AF_INET) { |
| memset(&u_, 0, sizeof(u_)); |
| u_.ip4.s_addr = HostToNetwork32(ip_in_host_byte_order); |
| } |
| |
| IPAddress(const IPAddress& other) : family_(other.family_) { |
| ::memcpy(&u_, &other.u_, sizeof(u_)); |
| } |
| |
| virtual ~IPAddress() {} |
| |
| const IPAddress & operator=(const IPAddress& other) { |
| family_ = other.family_; |
| ::memcpy(&u_, &other.u_, sizeof(u_)); |
| return *this; |
| } |
| |
| bool operator==(const IPAddress& other) const; |
| bool operator!=(const IPAddress& other) const; |
| bool operator <(const IPAddress& other) const; |
| bool operator >(const IPAddress& other) const; |
| friend std::ostream& operator<<(std::ostream& os, const IPAddress& addr); |
| |
| int family() const { return family_; } |
| in_addr ipv4_address() const; |
| in6_addr ipv6_address() const; |
| |
| // Returns the number of bytes needed to store the raw address. |
| size_t Size() const; |
| |
| // Wraps inet_ntop. |
| std::string ToString() const; |
| |
| // Same as ToString but anonymizes it by hiding the last part. |
| std::string ToSensitiveString() const; |
| |
| // Returns an unmapped address from a possibly-mapped address. |
| // Returns the same address if this isn't a mapped address. |
| IPAddress Normalized() const; |
| |
| // Returns this address as an IPv6 address. |
| // Maps v4 addresses (as ::ffff:a.b.c.d), returns v6 addresses unchanged. |
| IPAddress AsIPv6Address() const; |
| |
| // For socketaddress' benefit. Returns the IP in host byte order. |
| uint32_t v4AddressAsHostOrderInteger() const; |
| |
| // Whether this is an unspecified IP address. |
| bool IsNil() const; |
| |
| private: |
| int family_; |
| union { |
| in_addr ip4; |
| in6_addr ip6; |
| } u_; |
| }; |
| |
| // IP class which could represent IPv6 address flags which is only |
| // meaningful in IPv6 case. |
| class InterfaceAddress : public IPAddress { |
| public: |
| InterfaceAddress() : ipv6_flags_(IPV6_ADDRESS_FLAG_NONE) {} |
| |
| InterfaceAddress(IPAddress ip) |
| : IPAddress(ip), ipv6_flags_(IPV6_ADDRESS_FLAG_NONE) {} |
| |
| InterfaceAddress(IPAddress addr, int ipv6_flags) |
| : IPAddress(addr), ipv6_flags_(ipv6_flags) {} |
| |
| InterfaceAddress(const in6_addr& ip6, int ipv6_flags) |
| : IPAddress(ip6), ipv6_flags_(ipv6_flags) {} |
| |
| const InterfaceAddress & operator=(const InterfaceAddress& other); |
| |
| bool operator==(const InterfaceAddress& other) const; |
| bool operator!=(const InterfaceAddress& other) const; |
| |
| int ipv6_flags() const { return ipv6_flags_; } |
| friend std::ostream& operator<<(std::ostream& os, |
| const InterfaceAddress& addr); |
| |
| private: |
| int ipv6_flags_; |
| }; |
| |
| bool IPFromAddrInfo(struct addrinfo* info, IPAddress* out); |
| bool IPFromString(const std::string& str, IPAddress* out); |
| bool IPFromString(const std::string& str, int flags, |
| InterfaceAddress* out); |
| bool IPIsAny(const IPAddress& ip); |
| bool IPIsLoopback(const IPAddress& ip); |
| bool IPIsPrivate(const IPAddress& ip); |
| bool IPIsUnspec(const IPAddress& ip); |
| size_t HashIP(const IPAddress& ip); |
| |
| // These are only really applicable for IPv6 addresses. |
| bool IPIs6Bone(const IPAddress& ip); |
| bool IPIs6To4(const IPAddress& ip); |
| bool IPIsLinkLocal(const IPAddress& ip); |
| bool IPIsMacBased(const IPAddress& ip); |
| bool IPIsSiteLocal(const IPAddress& ip); |
| bool IPIsTeredo(const IPAddress& ip); |
| bool IPIsULA(const IPAddress& ip); |
| bool IPIsV4Compatibility(const IPAddress& ip); |
| bool IPIsV4Mapped(const IPAddress& ip); |
| |
| // Returns the precedence value for this IP as given in RFC3484. |
| int IPAddressPrecedence(const IPAddress& ip); |
| |
| // Returns 'ip' truncated to be 'length' bits long. |
| IPAddress TruncateIP(const IPAddress& ip, int length); |
| |
| IPAddress GetLoopbackIP(int family); |
| IPAddress GetAnyIP(int family); |
| |
| // Returns the number of contiguously set bits, counting from the MSB in network |
| // byte order, in this IPAddress. Bits after the first 0 encountered are not |
| // counted. |
| int CountIPMaskBits(IPAddress mask); |
| |
| } // namespace rtc |
| |
| #endif // WEBRTC_BASE_IPADDRESS_H_ |