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/*
* libjingle
* Copyright 2011, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_BASE_IPADDRESS_H_
#define TALK_BASE_IPADDRESS_H_
#ifdef POSIX
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#include <string.h>
#include <string>
#include <vector>
#include "talk/base/basictypes.h"
#include "talk/base/byteorder.h"
#ifdef WIN32
#include "talk/base/win32.h"
#endif
namespace talk_base {
// 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 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_));
}
~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 v4AddressAsHostOrderInteger() const;
static void set_strip_sensitive(bool enable);
private:
int family_;
union {
in_addr ip4;
in6_addr ip6;
} u_;
static bool strip_sensitive_;
};
bool IPFromAddrInfo(struct addrinfo* info, IPAddress* out);
bool IPFromString(const std::string& str, IPAddress* 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 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);
// 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 talk_base
#endif // TALK_BASE_IPADDRESS_H_
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