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/*
* Copyright 2004 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.
*/
#include "rtc_base/socket_address.h"
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <string>
#if defined(WEBRTC_POSIX)
#if defined(OPENBSD)
#include <netinet/in_systm.h>
#endif
#if !defined(__native_client__)
#endif
#endif
#include "absl/strings/string_view.h"
#include "rtc_base/byte_order.h"
#include "rtc_base/ip_address.h"
#include "rtc_base/net_helpers.h"
#include "rtc_base/numerics/safe_conversions.h"
#include "rtc_base/strings/string_builder.h"
namespace rtc {
SocketAddress::SocketAddress() {
Clear();
}
SocketAddress::SocketAddress(absl::string_view hostname, int port) {
SetIP(hostname);
SetPort(port);
}
SocketAddress::SocketAddress(uint32_t ip_as_host_order_integer, int port) {
SetIP(IPAddress(ip_as_host_order_integer));
SetPort(port);
}
SocketAddress::SocketAddress(const IPAddress& ip, int port) {
SetIP(ip);
SetPort(port);
}
SocketAddress::SocketAddress(const SocketAddress& addr) {
this->operator=(addr);
}
void SocketAddress::Clear() {
hostname_.clear();
literal_ = false;
ip_ = IPAddress();
port_ = 0;
scope_id_ = 0;
}
bool SocketAddress::IsNil() const {
return hostname_.empty() && IPIsUnspec(ip_) && 0 == port_;
}
bool SocketAddress::IsComplete() const {
return (!IPIsAny(ip_)) && (0 != port_);
}
SocketAddress& SocketAddress::operator=(const SocketAddress& addr) {
hostname_ = addr.hostname_;
ip_ = addr.ip_;
port_ = addr.port_;
literal_ = addr.literal_;
scope_id_ = addr.scope_id_;
return *this;
}
void SocketAddress::SetIP(uint32_t ip_as_host_order_integer) {
hostname_.clear();
literal_ = false;
ip_ = IPAddress(ip_as_host_order_integer);
scope_id_ = 0;
}
void SocketAddress::SetIP(const IPAddress& ip) {
hostname_.clear();
literal_ = false;
ip_ = ip;
scope_id_ = 0;
}
void SocketAddress::SetIP(absl::string_view hostname) {
hostname_ = std::string(hostname);
literal_ = IPFromString(hostname, &ip_);
if (!literal_) {
ip_ = IPAddress();
}
scope_id_ = 0;
}
void SocketAddress::SetResolvedIP(uint32_t ip_as_host_order_integer) {
ip_ = IPAddress(ip_as_host_order_integer);
scope_id_ = 0;
}
void SocketAddress::SetResolvedIP(const IPAddress& ip) {
ip_ = ip;
scope_id_ = 0;
}
void SocketAddress::SetPort(int port) {
port_ = rtc::dchecked_cast<uint16_t>(port);
}
uint32_t SocketAddress::ip() const {
return ip_.v4AddressAsHostOrderInteger();
}
const IPAddress& SocketAddress::ipaddr() const {
return ip_;
}
uint16_t SocketAddress::port() const {
return port_;
}
std::string SocketAddress::HostAsURIString() const {
// If the hostname was a literal IP string, it may need to have square
// brackets added (for SocketAddress::ToString()).
if (!literal_ && !hostname_.empty())
return hostname_;
if (ip_.family() == AF_INET6) {
return "[" + ip_.ToString() + "]";
} else {
return ip_.ToString();
}
}
std::string SocketAddress::HostAsSensitiveURIString() const {
// If the hostname was a literal IP string, it may need to have square
// brackets added (for SocketAddress::ToString()).
if (!literal_ && !hostname_.empty())
return hostname_;
if (ip_.family() == AF_INET6) {
return "[" + ip_.ToSensitiveString() + "]";
} else {
return ip_.ToSensitiveString();
}
}
std::string SocketAddress::PortAsString() const {
return std::to_string(port_);
}
std::string SocketAddress::ToString() const {
char buf[1024];
rtc::SimpleStringBuilder sb(buf);
sb << HostAsURIString() << ":" << port();
return sb.str();
}
std::string SocketAddress::ToSensitiveString() const {
char buf[1024];
rtc::SimpleStringBuilder sb(buf);
sb << HostAsSensitiveURIString() << ":" << port();
return sb.str();
}
std::string SocketAddress::ToSensitiveNameAndAddressString() const {
if (IsUnresolvedIP() || literal_ || hostname_.empty()) {
return ToSensitiveString();
}
char buf[1024];
rtc::SimpleStringBuilder sb(buf);
sb << HostAsSensitiveURIString() << ":" << port();
sb << " (";
if (ip_.family() == AF_INET6) {
sb << "[" << ipaddr().ToSensitiveString() << "]";
} else {
sb << ipaddr().ToSensitiveString();
}
sb << ":" << port() << ")";
return sb.str();
}
bool SocketAddress::FromString(absl::string_view str) {
if (str.at(0) == '[') {
absl::string_view::size_type closebracket = str.rfind(']');
if (closebracket != absl::string_view::npos) {
absl::string_view::size_type colon = str.find(':', closebracket);
if (colon != absl::string_view::npos && colon > closebracket) {
SetPort(
strtoul(std::string(str.substr(colon + 1)).c_str(), nullptr, 10));
SetIP(str.substr(1, closebracket - 1));
} else {
return false;
}
}
} else {
absl::string_view::size_type pos = str.find(':');
if (absl::string_view::npos == pos)
return false;
SetPort(strtoul(std::string(str.substr(pos + 1)).c_str(), nullptr, 10));
SetIP(str.substr(0, pos));
}
return true;
}
bool SocketAddress::IsAnyIP() const {
return IPIsAny(ip_);
}
bool SocketAddress::IsLoopbackIP() const {
return IPIsLoopback(ip_) ||
(IPIsAny(ip_) && 0 == strcmp(hostname_.c_str(), "localhost"));
}
bool SocketAddress::IsPrivateIP() const {
return IPIsPrivate(ip_);
}
bool SocketAddress::IsUnresolvedIP() const {
return IPIsUnspec(ip_) && !literal_ && !hostname_.empty();
}
bool SocketAddress::operator==(const SocketAddress& addr) const {
return EqualIPs(addr) && EqualPorts(addr);
}
bool SocketAddress::operator<(const SocketAddress& addr) const {
if (ip_ != addr.ip_)
return ip_ < addr.ip_;
// We only check hostnames if both IPs are ANY or unspecified. This matches
// EqualIPs().
if ((IPIsAny(ip_) || IPIsUnspec(ip_)) && hostname_ != addr.hostname_)
return hostname_ < addr.hostname_;
return port_ < addr.port_;
}
bool SocketAddress::EqualIPs(const SocketAddress& addr) const {
return (ip_ == addr.ip_) &&
((!IPIsAny(ip_) && !IPIsUnspec(ip_)) || (hostname_ == addr.hostname_));
}
bool SocketAddress::EqualPorts(const SocketAddress& addr) const {
return (port_ == addr.port_);
}
size_t SocketAddress::Hash() const {
size_t h = 0;
h ^= HashIP(ip_);
h ^= port_ | (port_ << 16);
return h;
}
void SocketAddress::ToSockAddr(sockaddr_in* saddr) const {
memset(saddr, 0, sizeof(*saddr));
if (ip_.family() != AF_INET) {
saddr->sin_family = AF_UNSPEC;
return;
}
saddr->sin_family = AF_INET;
saddr->sin_port = HostToNetwork16(port_);
if (IPIsAny(ip_)) {
saddr->sin_addr.s_addr = INADDR_ANY;
} else {
saddr->sin_addr = ip_.ipv4_address();
}
}
bool SocketAddress::FromSockAddr(const sockaddr_in& saddr) {
if (saddr.sin_family != AF_INET)
return false;
SetIP(NetworkToHost32(saddr.sin_addr.s_addr));
SetPort(NetworkToHost16(saddr.sin_port));
literal_ = false;
return true;
}
static size_t ToSockAddrStorageHelper(sockaddr_storage* addr,
const IPAddress& ip,
uint16_t port,
int scope_id) {
memset(addr, 0, sizeof(sockaddr_storage));
addr->ss_family = static_cast<unsigned short>(ip.family());
if (addr->ss_family == AF_INET6) {
sockaddr_in6* saddr = reinterpret_cast<sockaddr_in6*>(addr);
saddr->sin6_addr = ip.ipv6_address();
saddr->sin6_port = HostToNetwork16(port);
saddr->sin6_scope_id = scope_id;
return sizeof(sockaddr_in6);
} else if (addr->ss_family == AF_INET) {
sockaddr_in* saddr = reinterpret_cast<sockaddr_in*>(addr);
saddr->sin_addr = ip.ipv4_address();
saddr->sin_port = HostToNetwork16(port);
return sizeof(sockaddr_in);
}
return 0;
}
size_t SocketAddress::ToDualStackSockAddrStorage(sockaddr_storage* addr) const {
return ToSockAddrStorageHelper(addr, ip_.AsIPv6Address(), port_, scope_id_);
}
size_t SocketAddress::ToSockAddrStorage(sockaddr_storage* addr) const {
return ToSockAddrStorageHelper(addr, ip_, port_, scope_id_);
}
bool SocketAddressFromSockAddrStorage(const sockaddr_storage& addr,
SocketAddress* out) {
if (!out) {
return false;
}
if (addr.ss_family == AF_INET) {
const sockaddr_in* saddr = reinterpret_cast<const sockaddr_in*>(&addr);
*out = SocketAddress(IPAddress(saddr->sin_addr),
NetworkToHost16(saddr->sin_port));
return true;
} else if (addr.ss_family == AF_INET6) {
const sockaddr_in6* saddr = reinterpret_cast<const sockaddr_in6*>(&addr);
*out = SocketAddress(IPAddress(saddr->sin6_addr),
NetworkToHost16(saddr->sin6_port));
out->SetScopeID(saddr->sin6_scope_id);
return true;
}
return false;
}
SocketAddress EmptySocketAddressWithFamily(int family) {
if (family == AF_INET) {
return SocketAddress(IPAddress(INADDR_ANY), 0);
} else if (family == AF_INET6) {
return SocketAddress(IPAddress(in6addr_any), 0);
}
return SocketAddress();
}
} // namespace rtc