rtc_base/socket_address.cc - src - Git at Google

 /*
  *  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 "absl/strings/string_view.h"
 #include "rtc_base/numerics/safe_conversions.h"

 #if defined(WEBRTC_POSIX)
 #include <netinet/in.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 #if defined(OPENBSD)
 #include <netinet/in_systm.h>
 #endif
 #if !defined(__native_client__)
 #include <netinet/ip.h>
 #endif
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <unistd.h>
 #endif

 #include "rtc_base/byte_order.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/net_helpers.h"
 #include "rtc_base/strings/string_builder.h"

 #if defined(WEBRTC_WIN)
 #include "rtc_base/win32.h"
 #endif

 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::ToResolvedSensitiveString() const {
   if (IsUnresolvedIP()) {
     return "";
   }
   char buf[1024];
   rtc::SimpleStringBuilder sb(buf);
   sb << ipaddr().ToSensitiveString() << ":" << 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
	/*
	* 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 "absl/strings/string_view.h"
	#include "rtc_base/numerics/safe_conversions.h"

	#if defined(WEBRTC_POSIX)
	#include <netinet/in.h>
	#include <sys/socket.h>
	#include <sys/types.h>
	#if defined(OPENBSD)
	#include <netinet/in_systm.h>
	#endif
	#if !defined(__native_client__)
	#include <netinet/ip.h>
	#endif
	#include <arpa/inet.h>
	#include <netdb.h>
	#include <unistd.h>
	#endif

	#include "rtc_base/byte_order.h"
	#include "rtc_base/checks.h"
	#include "rtc_base/logging.h"
	#include "rtc_base/net_helpers.h"
	#include "rtc_base/strings/string_builder.h"

	#if defined(WEBRTC_WIN)
	#include "rtc_base/win32.h"
	#endif

	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::ToResolvedSensitiveString() const {
	if (IsUnresolvedIP()) {
	return "";
	}
	char buf[1024];
	rtc::SimpleStringBuilder sb(buf);
	sb << ipaddr().ToSensitiveString() << ":" << 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