1 /* 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "webrtc/base/socketaddress.h" 12 13 #if defined(WEBRTC_POSIX) 14 #include <sys/types.h> 15 #include <sys/socket.h> 16 #include <netinet/in.h> 17 #if defined(OPENBSD) 18 #include <netinet/in_systm.h> 19 #endif 20 #if !defined(__native_client__) 21 #include <netinet/ip.h> 22 #endif 23 #include <arpa/inet.h> 24 #include <netdb.h> 25 #include <unistd.h> 26 #endif 27 28 #include <sstream> 29 30 #include "webrtc/base/byteorder.h" 31 #include "webrtc/base/common.h" 32 #include "webrtc/base/logging.h" 33 #include "webrtc/base/nethelpers.h" 34 35 #if defined(WEBRTC_WIN) 36 #include "webrtc/base/win32.h" 37 #endif 38 39 namespace rtc { 40 41 SocketAddress::SocketAddress() { 42 Clear(); 43 } 44 45 SocketAddress::SocketAddress(const std::string& hostname, int port) { 46 SetIP(hostname); 47 SetPort(port); 48 } 49 50 SocketAddress::SocketAddress(uint32_t ip_as_host_order_integer, int port) { 51 SetIP(IPAddress(ip_as_host_order_integer)); 52 SetPort(port); 53 } 54 55 SocketAddress::SocketAddress(const IPAddress& ip, int port) { 56 SetIP(ip); 57 SetPort(port); 58 } 59 60 SocketAddress::SocketAddress(const SocketAddress& addr) { 61 this->operator=(addr); 62 } 63 64 void SocketAddress::Clear() { 65 hostname_.clear(); 66 literal_ = false; 67 ip_ = IPAddress(); 68 port_ = 0; 69 scope_id_ = 0; 70 } 71 72 bool SocketAddress::IsNil() const { 73 return hostname_.empty() && IPIsUnspec(ip_) && 0 == port_; 74 } 75 76 bool SocketAddress::IsComplete() const { 77 return (!IPIsAny(ip_)) && (0 != port_); 78 } 79 80 SocketAddress& SocketAddress::operator=(const SocketAddress& addr) { 81 hostname_ = addr.hostname_; 82 ip_ = addr.ip_; 83 port_ = addr.port_; 84 literal_ = addr.literal_; 85 scope_id_ = addr.scope_id_; 86 return *this; 87 } 88 89 void SocketAddress::SetIP(uint32_t ip_as_host_order_integer) { 90 hostname_.clear(); 91 literal_ = false; 92 ip_ = IPAddress(ip_as_host_order_integer); 93 scope_id_ = 0; 94 } 95 96 void SocketAddress::SetIP(const IPAddress& ip) { 97 hostname_.clear(); 98 literal_ = false; 99 ip_ = ip; 100 scope_id_ = 0; 101 } 102 103 void SocketAddress::SetIP(const std::string& hostname) { 104 hostname_ = hostname; 105 literal_ = IPFromString(hostname, &ip_); 106 if (!literal_) { 107 ip_ = IPAddress(); 108 } 109 scope_id_ = 0; 110 } 111 112 void SocketAddress::SetResolvedIP(uint32_t ip_as_host_order_integer) { 113 ip_ = IPAddress(ip_as_host_order_integer); 114 scope_id_ = 0; 115 } 116 117 void SocketAddress::SetResolvedIP(const IPAddress& ip) { 118 ip_ = ip; 119 scope_id_ = 0; 120 } 121 122 void SocketAddress::SetPort(int port) { 123 ASSERT((0 <= port) && (port < 65536)); 124 port_ = static_cast<uint16_t>(port); 125 } 126 127 uint32_t SocketAddress::ip() const { 128 return ip_.v4AddressAsHostOrderInteger(); 129 } 130 131 const IPAddress& SocketAddress::ipaddr() const { 132 return ip_; 133 } 134 135 uint16_t SocketAddress::port() const { 136 return port_; 137 } 138 139 std::string SocketAddress::HostAsURIString() const { 140 // If the hostname was a literal IP string, it may need to have square 141 // brackets added (for SocketAddress::ToString()). 142 if (!literal_ && !hostname_.empty()) 143 return hostname_; 144 if (ip_.family() == AF_INET6) { 145 return "[" + ip_.ToString() + "]"; 146 } else { 147 return ip_.ToString(); 148 } 149 } 150 151 std::string SocketAddress::HostAsSensitiveURIString() const { 152 // If the hostname was a literal IP string, it may need to have square 153 // brackets added (for SocketAddress::ToString()). 154 if (!literal_ && !hostname_.empty()) 155 return hostname_; 156 if (ip_.family() == AF_INET6) { 157 return "[" + ip_.ToSensitiveString() + "]"; 158 } else { 159 return ip_.ToSensitiveString(); 160 } 161 } 162 163 std::string SocketAddress::PortAsString() const { 164 std::ostringstream ost; 165 ost << port_; 166 return ost.str(); 167 } 168 169 std::string SocketAddress::ToString() const { 170 std::ostringstream ost; 171 ost << *this; 172 return ost.str(); 173 } 174 175 std::string SocketAddress::ToSensitiveString() const { 176 std::ostringstream ost; 177 ost << HostAsSensitiveURIString() << ":" << port(); 178 return ost.str(); 179 } 180 181 bool SocketAddress::FromString(const std::string& str) { 182 if (str.at(0) == '[') { 183 std::string::size_type closebracket = str.rfind(']'); 184 if (closebracket != std::string::npos) { 185 std::string::size_type colon = str.find(':', closebracket); 186 if (colon != std::string::npos && colon > closebracket) { 187 SetPort(strtoul(str.substr(colon + 1).c_str(), NULL, 10)); 188 SetIP(str.substr(1, closebracket - 1)); 189 } else { 190 return false; 191 } 192 } 193 } else { 194 std::string::size_type pos = str.find(':'); 195 if (std::string::npos == pos) 196 return false; 197 SetPort(strtoul(str.substr(pos + 1).c_str(), NULL, 10)); 198 SetIP(str.substr(0, pos)); 199 } 200 return true; 201 } 202 203 std::ostream& operator<<(std::ostream& os, const SocketAddress& addr) { 204 os << addr.HostAsURIString() << ":" << addr.port(); 205 return os; 206 } 207 208 bool SocketAddress::IsAnyIP() const { 209 return IPIsAny(ip_); 210 } 211 212 bool SocketAddress::IsLoopbackIP() const { 213 return IPIsLoopback(ip_) || (IPIsAny(ip_) && 214 0 == strcmp(hostname_.c_str(), "localhost")); 215 } 216 217 bool SocketAddress::IsPrivateIP() const { 218 return IPIsPrivate(ip_); 219 } 220 221 bool SocketAddress::IsUnresolvedIP() const { 222 return IPIsUnspec(ip_) && !literal_ && !hostname_.empty(); 223 } 224 225 bool SocketAddress::operator==(const SocketAddress& addr) const { 226 return EqualIPs(addr) && EqualPorts(addr); 227 } 228 229 bool SocketAddress::operator<(const SocketAddress& addr) const { 230 if (ip_ != addr.ip_) 231 return ip_ < addr.ip_; 232 233 // We only check hostnames if both IPs are ANY or unspecified. This matches 234 // EqualIPs(). 235 if ((IPIsAny(ip_) || IPIsUnspec(ip_)) && hostname_ != addr.hostname_) 236 return hostname_ < addr.hostname_; 237 238 return port_ < addr.port_; 239 } 240 241 bool SocketAddress::EqualIPs(const SocketAddress& addr) const { 242 return (ip_ == addr.ip_) && 243 ((!IPIsAny(ip_) && !IPIsUnspec(ip_)) || (hostname_ == addr.hostname_)); 244 } 245 246 bool SocketAddress::EqualPorts(const SocketAddress& addr) const { 247 return (port_ == addr.port_); 248 } 249 250 size_t SocketAddress::Hash() const { 251 size_t h = 0; 252 h ^= HashIP(ip_); 253 h ^= port_ | (port_ << 16); 254 return h; 255 } 256 257 void SocketAddress::ToSockAddr(sockaddr_in* saddr) const { 258 memset(saddr, 0, sizeof(*saddr)); 259 if (ip_.family() != AF_INET) { 260 saddr->sin_family = AF_UNSPEC; 261 return; 262 } 263 saddr->sin_family = AF_INET; 264 saddr->sin_port = HostToNetwork16(port_); 265 if (IPIsAny(ip_)) { 266 saddr->sin_addr.s_addr = INADDR_ANY; 267 } else { 268 saddr->sin_addr = ip_.ipv4_address(); 269 } 270 } 271 272 bool SocketAddress::FromSockAddr(const sockaddr_in& saddr) { 273 if (saddr.sin_family != AF_INET) 274 return false; 275 SetIP(NetworkToHost32(saddr.sin_addr.s_addr)); 276 SetPort(NetworkToHost16(saddr.sin_port)); 277 literal_ = false; 278 return true; 279 } 280 281 static size_t ToSockAddrStorageHelper(sockaddr_storage* addr, 282 IPAddress ip, 283 uint16_t port, 284 int scope_id) { 285 memset(addr, 0, sizeof(sockaddr_storage)); 286 addr->ss_family = static_cast<unsigned short>(ip.family()); 287 if (addr->ss_family == AF_INET6) { 288 sockaddr_in6* saddr = reinterpret_cast<sockaddr_in6*>(addr); 289 saddr->sin6_addr = ip.ipv6_address(); 290 saddr->sin6_port = HostToNetwork16(port); 291 saddr->sin6_scope_id = scope_id; 292 return sizeof(sockaddr_in6); 293 } else if (addr->ss_family == AF_INET) { 294 sockaddr_in* saddr = reinterpret_cast<sockaddr_in*>(addr); 295 saddr->sin_addr = ip.ipv4_address(); 296 saddr->sin_port = HostToNetwork16(port); 297 return sizeof(sockaddr_in); 298 } 299 return 0; 300 } 301 302 size_t SocketAddress::ToDualStackSockAddrStorage(sockaddr_storage *addr) const { 303 return ToSockAddrStorageHelper(addr, ip_.AsIPv6Address(), port_, scope_id_); 304 } 305 306 size_t SocketAddress::ToSockAddrStorage(sockaddr_storage* addr) const { 307 return ToSockAddrStorageHelper(addr, ip_, port_, scope_id_); 308 } 309 310 bool SocketAddressFromSockAddrStorage(const sockaddr_storage& addr, 311 SocketAddress* out) { 312 if (!out) { 313 return false; 314 } 315 if (addr.ss_family == AF_INET) { 316 const sockaddr_in* saddr = reinterpret_cast<const sockaddr_in*>(&addr); 317 *out = SocketAddress(IPAddress(saddr->sin_addr), 318 NetworkToHost16(saddr->sin_port)); 319 return true; 320 } else if (addr.ss_family == AF_INET6) { 321 const sockaddr_in6* saddr = reinterpret_cast<const sockaddr_in6*>(&addr); 322 *out = SocketAddress(IPAddress(saddr->sin6_addr), 323 NetworkToHost16(saddr->sin6_port)); 324 out->SetScopeID(saddr->sin6_scope_id); 325 return true; 326 } 327 return false; 328 } 329 330 SocketAddress EmptySocketAddressWithFamily(int family) { 331 if (family == AF_INET) { 332 return SocketAddress(IPAddress(INADDR_ANY), 0); 333 } else if (family == AF_INET6) { 334 return SocketAddress(IPAddress(in6addr_any), 0); 335 } 336 return SocketAddress(); 337 } 338 339 } // namespace rtc 340
