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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/ip_endpoint.h"
#include "build/build_config.h"
#if defined(OS_WIN)
#include <winsock2.h>
#include <ws2bth.h>
#elif defined(OS_POSIX)
#include <netinet/in.h>
#endif
#include <tuple>
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/sys_byteorder.h"
#include "net/base/ip_address.h"
#if defined(OS_WIN)
#include "net/base/winsock_util.h"
#endif
namespace net {
namespace {
// By definition, socklen_t is large enough to hold both sizes.
const socklen_t kSockaddrInSize = sizeof(struct sockaddr_in);
const socklen_t kSockaddrIn6Size = sizeof(struct sockaddr_in6);
// Extracts the address and port portions of a sockaddr.
bool GetIPAddressFromSockAddr(const struct sockaddr* sock_addr,
socklen_t sock_addr_len,
const uint8_t** address,
size_t* address_len,
uint16_t* port) {
if (sock_addr->sa_family == AF_INET) {
if (sock_addr_len < static_cast<socklen_t>(sizeof(struct sockaddr_in)))
return false;
const struct sockaddr_in* addr =
reinterpret_cast<const struct sockaddr_in*>(sock_addr);
*address = reinterpret_cast<const uint8_t*>(&addr->sin_addr);
*address_len = kIPv4AddressSize;
if (port)
*port = base::NetToHost16(addr->sin_port);
return true;
}
if (sock_addr->sa_family == AF_INET6) {
if (sock_addr_len < static_cast<socklen_t>(sizeof(struct sockaddr_in6)))
return false;
const struct sockaddr_in6* addr =
reinterpret_cast<const struct sockaddr_in6*>(sock_addr);
*address = reinterpret_cast<const uint8_t*>(&addr->sin6_addr);
*address_len = kIPv6AddressSize;
if (port)
*port = base::NetToHost16(addr->sin6_port);
return true;
}
#if defined(OS_WIN)
if (sock_addr->sa_family == AF_BTH) {
if (sock_addr_len < static_cast<socklen_t>(sizeof(SOCKADDR_BTH)))
return false;
const SOCKADDR_BTH* addr = reinterpret_cast<const SOCKADDR_BTH*>(sock_addr);
*address = reinterpret_cast<const uint8_t*>(&addr->btAddr);
*address_len = kBluetoothAddressSize;
if (port)
*port = static_cast<uint16_t>(addr->port);
return true;
}
#endif
return false; // Unrecognized |sa_family|.
}
} // namespace
IPEndPoint::IPEndPoint() : port_(0) {}
IPEndPoint::~IPEndPoint() {}
IPEndPoint::IPEndPoint(const IPAddressNumber& address, uint16_t port)
: address_(address), port_(port) {
}
IPEndPoint::IPEndPoint(const IPAddress& address, uint16_t port)
: address_(address), port_(port) {}
IPEndPoint::IPEndPoint(const IPEndPoint& endpoint) {
address_ = endpoint.address_;
port_ = endpoint.port_;
}
AddressFamily IPEndPoint::GetFamily() const {
return GetAddressFamily(address_.bytes());
}
int IPEndPoint::GetSockAddrFamily() const {
switch (address_.size()) {
case kIPv4AddressSize:
return AF_INET;
case kIPv6AddressSize:
return AF_INET6;
default:
NOTREACHED() << "Bad IP address";
return AF_UNSPEC;
}
}
bool IPEndPoint::ToSockAddr(struct sockaddr* address,
socklen_t* address_length) const {
DCHECK(address);
DCHECK(address_length);
switch (address_.size()) {
case kIPv4AddressSize: {
if (*address_length < kSockaddrInSize)
return false;
*address_length = kSockaddrInSize;
struct sockaddr_in* addr = reinterpret_cast<struct sockaddr_in*>(address);
memset(addr, 0, sizeof(struct sockaddr_in));
addr->sin_family = AF_INET;
addr->sin_port = base::HostToNet16(port_);
memcpy(&addr->sin_addr, &address_.bytes()[0], kIPv4AddressSize);
break;
}
case kIPv6AddressSize: {
if (*address_length < kSockaddrIn6Size)
return false;
*address_length = kSockaddrIn6Size;
struct sockaddr_in6* addr6 =
reinterpret_cast<struct sockaddr_in6*>(address);
memset(addr6, 0, sizeof(struct sockaddr_in6));
addr6->sin6_family = AF_INET6;
addr6->sin6_port = base::HostToNet16(port_);
memcpy(&addr6->sin6_addr, &address_.bytes()[0], kIPv6AddressSize);
break;
}
default:
return false;
}
return true;
}
bool IPEndPoint::FromSockAddr(const struct sockaddr* sock_addr,
socklen_t sock_addr_len) {
DCHECK(sock_addr);
const uint8_t* address;
size_t address_len;
uint16_t port;
if (!GetIPAddressFromSockAddr(sock_addr, sock_addr_len, &address,
&address_len, &port)) {
return false;
}
address_ = net::IPAddress(address, address_len);
port_ = port;
return true;
}
std::string IPEndPoint::ToString() const {
return IPAddressToStringWithPort(address_.bytes(), port_);
}
std::string IPEndPoint::ToStringWithoutPort() const {
return address_.ToString();
}
bool IPEndPoint::operator<(const IPEndPoint& other) const {
// Sort IPv4 before IPv6.
if (address_.size() != other.address_.size()) {
return address_.size() < other.address_.size();
}
return std::tie(address_, port_) < std::tie(other.address_, other.port_);
}
bool IPEndPoint::operator==(const IPEndPoint& other) const {
return address_ == other.address_ && port_ == other.port_;
}
} // namespace net
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