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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 <ostream>
#include <string.h>
#include <tuple>
#include "base/check.h"
#include "base/check_op.h"
#include "base/notreached.h"
#include "base/strings/string_number_conversions.h"
#include "base/sys_byteorder.h"
#include "build/build_config.h"
#include "net/base/ip_address.h"
#include "net/base/sys_addrinfo.h"
#if BUILDFLAG(IS_WIN)
#include <winsock2.h>
#include <ws2bth.h>
#include "net/base/winsock_util.h" // For kBluetoothAddressSize
#endif
namespace net {
IPEndPoint::IPEndPoint() = default;
IPEndPoint::~IPEndPoint() = default;
IPEndPoint::IPEndPoint(const IPAddress& address, uint16_t port)
: address_(address), port_(port) {}
IPEndPoint::IPEndPoint(const IPEndPoint& endpoint) = default;
uint16_t IPEndPoint::port() const {
#if BUILDFLAG(IS_WIN)
DCHECK_NE(address_.size(), kBluetoothAddressSize);
#endif
return port_;
}
AddressFamily IPEndPoint::GetFamily() const {
return GetAddressFamily(address_);
}
int IPEndPoint::GetSockAddrFamily() const {
switch (address_.size()) {
case IPAddress::kIPv4AddressSize:
return AF_INET;
case IPAddress::kIPv6AddressSize:
return AF_INET6;
#if BUILDFLAG(IS_WIN)
case kBluetoothAddressSize:
return AF_BTH;
#endif
default:
NOTREACHED() << "Bad IP address";
return AF_UNSPEC;
}
}
bool IPEndPoint::ToSockAddr(struct sockaddr* address,
socklen_t* address_length) const {
// By definition, socklen_t is large enough to hold both sizes.
constexpr socklen_t kSockaddrInSize =
static_cast<socklen_t>(sizeof(struct sockaddr_in));
constexpr socklen_t kSockaddrIn6Size =
static_cast<socklen_t>(sizeof(struct sockaddr_in6));
DCHECK(address);
DCHECK(address_length);
#if BUILDFLAG(IS_WIN)
DCHECK_NE(address_.size(), kBluetoothAddressSize);
#endif
switch (address_.size()) {
case IPAddress::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().data(),
IPAddress::kIPv4AddressSize);
break;
}
case IPAddress::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().data(),
IPAddress::kIPv6AddressSize);
break;
}
default:
return false;
}
return true;
}
bool IPEndPoint::FromSockAddr(const struct sockaddr* sock_addr,
socklen_t sock_addr_len) {
DCHECK(sock_addr);
switch (sock_addr->sa_family) {
case 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);
*this = IPEndPoint(
IPAddress(reinterpret_cast<const uint8_t*>(&addr->sin_addr),
IPAddress::kIPv4AddressSize),
base::NetToHost16(addr->sin_port));
return true;
}
case 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);
*this = IPEndPoint(
IPAddress(reinterpret_cast<const uint8_t*>(&addr->sin6_addr),
IPAddress::kIPv6AddressSize),
base::NetToHost16(addr->sin6_port));
return true;
}
#if BUILDFLAG(IS_WIN)
case 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);
*this = IPEndPoint();
address_ = IPAddress(reinterpret_cast<const uint8_t*>(&addr->btAddr),
kBluetoothAddressSize);
// Intentionally ignoring Bluetooth port. It is a ULONG, but
// `IPEndPoint::port_` is a uint16_t. See https://crbug.com/1231273.
return true;
}
#endif
}
return false; // Unrecognized |sa_family|.
}
std::string IPEndPoint::ToString() const {
#if BUILDFLAG(IS_WIN)
DCHECK_NE(address_.size(), kBluetoothAddressSize);
#endif
return IPAddressToStringWithPort(address_, port_);
}
std::string IPEndPoint::ToStringWithoutPort() const {
#if BUILDFLAG(IS_WIN)
DCHECK_NE(address_.size(), kBluetoothAddressSize);
#endif
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_;
}
bool IPEndPoint::operator!=(const IPEndPoint& that) const {
return !(*this == that);
}
std::ostream& operator<<(std::ostream& os, const IPEndPoint& ip_endpoint) {
return os << ip_endpoint.ToString();
}
} // namespace net
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