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/*
* libjingle
* Copyright 2004--2005, 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_SOCKETADDRESS_H_
#define TALK_BASE_SOCKETADDRESS_H_
#include <string>
#include <vector>
#include <iosfwd>
#include "talk/base/basictypes.h"
#include "talk/base/ipaddress.h"
#undef SetPort
struct sockaddr_in;
struct sockaddr_storage;
namespace talk_base {
// Records an IP address and port.
class SocketAddress {
public:
// Creates a nil address.
SocketAddress();
// Creates the address with the given host and port. Host may be a
// literal IP string or a hostname to be resolved later.
SocketAddress(const std::string& hostname, int port);
// Creates the address with the given IP and port.
// IP is given as an integer in host byte order. V4 only, to be deprecated.
SocketAddress(uint32 ip_as_host_order_integer, int port);
// Creates the address with the given IP and port.
SocketAddress(const IPAddress& ip, int port);
// Creates a copy of the given address.
SocketAddress(const SocketAddress& addr);
// Resets to the nil address.
void Clear();
// Determines if this is a nil address (empty hostname, any IP, null port)
bool IsNil() const;
// Returns true if ip and port are set.
bool IsComplete() const;
// Replaces our address with the given one.
SocketAddress& operator=(const SocketAddress& addr);
// Changes the IP of this address to the given one, and clears the hostname
// IP is given as an integer in host byte order. V4 only, to be deprecated..
void SetIP(uint32 ip_as_host_order_integer);
// Changes the IP of this address to the given one, and clears the hostname.
void SetIP(const IPAddress& ip);
// Changes the hostname of this address to the given one.
// Does not resolve the address; use Resolve to do so.
void SetIP(const std::string& hostname);
// Sets the IP address while retaining the hostname. Useful for bypassing
// DNS for a pre-resolved IP.
// IP is given as an integer in host byte order. V4 only, to be deprecated.
void SetResolvedIP(uint32 ip_as_host_order_integer);
// Sets the IP address while retaining the hostname. Useful for bypassing
// DNS for a pre-resolved IP.
void SetResolvedIP(const IPAddress& ip);
// Changes the port of this address to the given one.
void SetPort(int port);
// Returns the hostname.
const std::string& hostname() const { return hostname_; }
// Returns the IP address as a host byte order integer.
// Returns 0 for non-v4 addresses.
uint32 ip() const;
const IPAddress& ipaddr() const;
int family() const {return ip_.family(); }
// Returns the port part of this address.
uint16 port() const;
// Returns the scope ID associated with this address. Scope IDs are a
// necessary addition to IPv6 link-local addresses, with different network
// interfaces having different scope-ids for their link-local addresses.
// IPv4 address do not have scope_ids and sockaddr_in structures do not have
// a field for them.
int scope_id() const {return scope_id_; }
void SetScopeID(int id) { scope_id_ = id; }
// Returns the 'host' portion of the address (hostname or IP) in a form
// suitable for use in a URI. If both IP and hostname are present, hostname
// is preferred. IPv6 addresses are enclosed in square brackets ('[' and ']').
std::string HostAsURIString() const;
// Same as HostAsURIString but anonymizes IP addresses by hiding the last
// part.
std::string HostAsSensitiveURIString() const;
// Returns the port as a string.
std::string PortAsString() const;
// Returns hostname:port or [hostname]:port.
std::string ToString() const;
// Same as ToString but anonymizes it by hiding the last part.
std::string ToSensitiveString() const;
// Parses hostname:port and [hostname]:port.
bool FromString(const std::string& str);
friend std::ostream& operator<<(std::ostream& os, const SocketAddress& addr);
// Determines whether this represents a missing / any IP address.
// That is, 0.0.0.0 or ::.
// Hostname and/or port may be set.
bool IsAnyIP() const;
inline bool IsAny() const { return IsAnyIP(); } // deprecated
// Determines whether the IP address refers to a loopback address.
// For v4 addresses this means the address is in the range 127.0.0.0/8.
// For v6 addresses this means the address is ::1.
bool IsLoopbackIP() const;
// Determines whether the IP address is in one of the private ranges:
// For v4: 127.0.0.0/8 10.0.0.0/8 192.168.0.0/16 172.16.0.0/12.
// For v6: FE80::/16 and ::1.
bool IsPrivateIP() const;
// Determines whether the hostname has been resolved to an IP.
bool IsUnresolvedIP() const;
inline bool IsUnresolved() const { return IsUnresolvedIP(); } // deprecated
// Determines whether this address is identical to the given one.
bool operator ==(const SocketAddress& addr) const;
inline bool operator !=(const SocketAddress& addr) const {
return !this->operator ==(addr);
}
// Compares based on IP and then port.
bool operator <(const SocketAddress& addr) const;
// Determines whether this address has the same IP as the one given.
bool EqualIPs(const SocketAddress& addr) const;
// Determines whether this address has the same port as the one given.
bool EqualPorts(const SocketAddress& addr) const;
// Hashes this address into a small number.
size_t Hash() const;
// Write this address to a sockaddr_in.
// If IPv6, will zero out the sockaddr_in and sets family to AF_UNSPEC.
void ToSockAddr(sockaddr_in* saddr) const;
// Read this address from a sockaddr_in.
bool FromSockAddr(const sockaddr_in& saddr);
// Read and write the address to/from a sockaddr_storage.
// Dual stack version always sets family to AF_INET6, and maps v4 addresses.
// The other version doesn't map, and outputs an AF_INET address for
// v4 or mapped addresses, and AF_INET6 addresses for others.
// Returns the size of the sockaddr_in or sockaddr_in6 structure that is
// written to the sockaddr_storage, or zero on failure.
size_t ToDualStackSockAddrStorage(sockaddr_storage* saddr) const;
size_t ToSockAddrStorage(sockaddr_storage* saddr) const;
// Converts the IP address given in 'compact form' into dotted form.
// IP is given as an integer in host byte order. V4 only, to be deprecated.
// TODO: Deprecate this.
static std::string IPToString(uint32 ip_as_host_order_integer);
// Same as IPToString but anonymizes it by hiding the last part.
// TODO: Deprecate this.
static std::string IPToSensitiveString(uint32 ip_as_host_order_integer);
// Converts the IP address given in dotted form into compact form.
// Only dotted names (A.B.C.D) are converted.
// Output integer is returned in host byte order.
// TODO: Deprecate, replace wth agnostic versions.
static bool StringToIP(const std::string& str, uint32* ip);
static uint32 StringToIP(const std::string& str);
// Converts the IP address given in printable form into an IPAddress.
static bool StringToIP(const std::string& str, IPAddress* ip);
private:
std::string hostname_;
IPAddress ip_;
uint16 port_;
int scope_id_;
bool literal_; // Indicates that 'hostname_' contains a literal IP string.
};
bool SocketAddressFromSockAddrStorage(const sockaddr_storage& saddr,
SocketAddress* out);
SocketAddress EmptySocketAddressWithFamily(int family);
} // namespace talk_base
#endif // TALK_BASE_SOCKETADDRESS_H_
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