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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 #if !defined(DART_IO_DISABLED) | |
| 6 | |
| 7 #include "platform/globals.h" | |
| 8 #if defined(HOST_OS_LINUX) | |
| 9 | |
| 10 #include "bin/socket_base.h" | |
| 11 | |
| 12 #include <errno.h> // NOLINT | |
| 13 #include <ifaddrs.h> // NOLINT | |
| 14 #include <net/if.h> // NOLINT | |
| 15 #include <netinet/tcp.h> // NOLINT | |
| 16 #include <stdio.h> // NOLINT | |
| 17 #include <stdlib.h> // NOLINT | |
| 18 #include <string.h> // NOLINT | |
| 19 #include <sys/stat.h> // NOLINT | |
| 20 #include <unistd.h> // NOLINT | |
| 21 | |
| 22 #include "bin/fdutils.h" | |
| 23 #include "bin/file.h" | |
| 24 #include "bin/socket_base_linux.h" | |
| 25 #include "bin/thread.h" | |
| 26 #include "platform/signal_blocker.h" | |
| 27 | |
| 28 namespace dart { | |
| 29 namespace bin { | |
| 30 | |
| 31 SocketAddress::SocketAddress(struct sockaddr* sa) { | |
| 32 ASSERT(INET6_ADDRSTRLEN >= INET_ADDRSTRLEN); | |
| 33 if (!SocketBase::FormatNumericAddress(*reinterpret_cast<RawAddr*>(sa), | |
| 34 as_string_, INET6_ADDRSTRLEN)) { | |
| 35 as_string_[0] = 0; | |
| 36 } | |
| 37 socklen_t salen = GetAddrLength(*reinterpret_cast<RawAddr*>(sa)); | |
| 38 memmove(reinterpret_cast<void*>(&addr_), sa, salen); | |
| 39 } | |
| 40 | |
| 41 | |
| 42 bool SocketBase::FormatNumericAddress(const RawAddr& addr, | |
| 43 char* address, | |
| 44 int len) { | |
| 45 socklen_t salen = SocketAddress::GetAddrLength(addr); | |
| 46 return (NO_RETRY_EXPECTED(getnameinfo(&addr.addr, salen, address, len, NULL, | |
| 47 0, NI_NUMERICHOST) == 0)); | |
| 48 } | |
| 49 | |
| 50 | |
| 51 bool SocketBase::IsBindError(intptr_t error_number) { | |
| 52 return error_number == EADDRINUSE || error_number == EADDRNOTAVAIL || | |
| 53 error_number == EINVAL; | |
| 54 } | |
| 55 | |
| 56 | |
| 57 intptr_t SocketBase::Available(intptr_t fd) { | |
| 58 return FDUtils::AvailableBytes(fd); | |
| 59 } | |
| 60 | |
| 61 | |
| 62 intptr_t SocketBase::Read(intptr_t fd, void* buffer, intptr_t num_bytes) { | |
| 63 ASSERT(fd >= 0); | |
| 64 ssize_t read_bytes = TEMP_FAILURE_RETRY(read(fd, buffer, num_bytes)); | |
| 65 ASSERT(EAGAIN == EWOULDBLOCK); | |
| 66 if ((read_bytes == -1) && (errno == EWOULDBLOCK)) { | |
| 67 // If the read would block we need to retry and therefore return 0 | |
| 68 // as the number of bytes written. | |
| 69 read_bytes = 0; | |
| 70 } | |
| 71 return read_bytes; | |
| 72 } | |
| 73 | |
| 74 | |
| 75 intptr_t SocketBase::RecvFrom(intptr_t fd, | |
| 76 void* buffer, | |
| 77 intptr_t num_bytes, | |
| 78 RawAddr* addr) { | |
| 79 ASSERT(fd >= 0); | |
| 80 socklen_t addr_len = sizeof(addr->ss); | |
| 81 ssize_t read_bytes = TEMP_FAILURE_RETRY( | |
| 82 recvfrom(fd, buffer, num_bytes, 0, &addr->addr, &addr_len)); | |
| 83 if ((read_bytes == -1) && (errno == EWOULDBLOCK)) { | |
| 84 // If the read would block we need to retry and therefore return 0 | |
| 85 // as the number of bytes written. | |
| 86 read_bytes = 0; | |
| 87 } | |
| 88 return read_bytes; | |
| 89 } | |
| 90 | |
| 91 | |
| 92 intptr_t SocketBase::Write(intptr_t fd, | |
| 93 const void* buffer, | |
| 94 intptr_t num_bytes) { | |
| 95 ASSERT(fd >= 0); | |
| 96 ssize_t written_bytes = TEMP_FAILURE_RETRY(write(fd, buffer, num_bytes)); | |
| 97 ASSERT(EAGAIN == EWOULDBLOCK); | |
| 98 if ((written_bytes == -1) && (errno == EWOULDBLOCK)) { | |
| 99 // If the would block we need to retry and therefore return 0 as | |
| 100 // the number of bytes written. | |
| 101 written_bytes = 0; | |
| 102 } | |
| 103 return written_bytes; | |
| 104 } | |
| 105 | |
| 106 | |
| 107 intptr_t SocketBase::SendTo(intptr_t fd, | |
| 108 const void* buffer, | |
| 109 intptr_t num_bytes, | |
| 110 const RawAddr& addr) { | |
| 111 ASSERT(fd >= 0); | |
| 112 ssize_t written_bytes = | |
| 113 TEMP_FAILURE_RETRY(sendto(fd, buffer, num_bytes, 0, &addr.addr, | |
| 114 SocketAddress::GetAddrLength(addr))); | |
| 115 ASSERT(EAGAIN == EWOULDBLOCK); | |
| 116 if ((written_bytes == -1) && (errno == EWOULDBLOCK)) { | |
| 117 // If the would block we need to retry and therefore return 0 as | |
| 118 // the number of bytes written. | |
| 119 written_bytes = 0; | |
| 120 } | |
| 121 return written_bytes; | |
| 122 } | |
| 123 | |
| 124 | |
| 125 intptr_t SocketBase::GetPort(intptr_t fd) { | |
| 126 ASSERT(fd >= 0); | |
| 127 RawAddr raw; | |
| 128 socklen_t size = sizeof(raw); | |
| 129 if (NO_RETRY_EXPECTED(getsockname(fd, &raw.addr, &size))) { | |
| 130 return 0; | |
| 131 } | |
| 132 return SocketAddress::GetAddrPort(raw); | |
| 133 } | |
| 134 | |
| 135 | |
| 136 SocketAddress* SocketBase::GetRemotePeer(intptr_t fd, intptr_t* port) { | |
| 137 ASSERT(fd >= 0); | |
| 138 RawAddr raw; | |
| 139 socklen_t size = sizeof(raw); | |
| 140 if (NO_RETRY_EXPECTED(getpeername(fd, &raw.addr, &size))) { | |
| 141 return NULL; | |
| 142 } | |
| 143 *port = SocketAddress::GetAddrPort(raw); | |
| 144 return new SocketAddress(&raw.addr); | |
| 145 } | |
| 146 | |
| 147 | |
| 148 void SocketBase::GetError(intptr_t fd, OSError* os_error) { | |
| 149 int len = sizeof(errno); | |
| 150 int err = 0; | |
| 151 VOID_NO_RETRY_EXPECTED(getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, | |
| 152 reinterpret_cast<socklen_t*>(&len))); | |
| 153 errno = err; | |
| 154 os_error->SetCodeAndMessage(OSError::kSystem, errno); | |
| 155 } | |
| 156 | |
| 157 | |
| 158 int SocketBase::GetType(intptr_t fd) { | |
| 159 struct stat64 buf; | |
| 160 int result = TEMP_FAILURE_RETRY(fstat64(fd, &buf)); | |
| 161 if (result == -1) { | |
| 162 return -1; | |
| 163 } | |
| 164 if (S_ISCHR(buf.st_mode)) { | |
| 165 return File::kTerminal; | |
| 166 } | |
| 167 if (S_ISFIFO(buf.st_mode)) { | |
| 168 return File::kPipe; | |
| 169 } | |
| 170 if (S_ISREG(buf.st_mode)) { | |
| 171 return File::kFile; | |
| 172 } | |
| 173 return File::kOther; | |
| 174 } | |
| 175 | |
| 176 | |
| 177 intptr_t SocketBase::GetStdioHandle(intptr_t num) { | |
| 178 return num; | |
| 179 } | |
| 180 | |
| 181 | |
| 182 AddressList<SocketAddress>* SocketBase::LookupAddress(const char* host, | |
| 183 int type, | |
| 184 OSError** os_error) { | |
| 185 // Perform a name lookup for a host name. | |
| 186 struct addrinfo hints; | |
| 187 memset(&hints, 0, sizeof(hints)); | |
| 188 hints.ai_family = SocketAddress::FromType(type); | |
| 189 hints.ai_socktype = SOCK_STREAM; | |
| 190 hints.ai_flags = AI_ADDRCONFIG; | |
| 191 hints.ai_protocol = IPPROTO_TCP; | |
| 192 struct addrinfo* info = NULL; | |
| 193 int status = NO_RETRY_EXPECTED(getaddrinfo(host, 0, &hints, &info)); | |
| 194 if (status != 0) { | |
| 195 // We failed, try without AI_ADDRCONFIG. This can happen when looking up | |
| 196 // e.g. '::1', when there are no global IPv6 addresses. | |
| 197 hints.ai_flags = 0; | |
| 198 status = NO_RETRY_EXPECTED(getaddrinfo(host, 0, &hints, &info)); | |
| 199 if (status != 0) { | |
| 200 ASSERT(*os_error == NULL); | |
| 201 *os_error = | |
| 202 new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); | |
| 203 return NULL; | |
| 204 } | |
| 205 } | |
| 206 intptr_t count = 0; | |
| 207 for (struct addrinfo* c = info; c != NULL; c = c->ai_next) { | |
| 208 if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) { | |
| 209 count++; | |
| 210 } | |
| 211 } | |
| 212 intptr_t i = 0; | |
| 213 AddressList<SocketAddress>* addresses = new AddressList<SocketAddress>(count); | |
| 214 for (struct addrinfo* c = info; c != NULL; c = c->ai_next) { | |
| 215 if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) { | |
| 216 addresses->SetAt(i, new SocketAddress(c->ai_addr)); | |
| 217 i++; | |
| 218 } | |
| 219 } | |
| 220 freeaddrinfo(info); | |
| 221 return addresses; | |
| 222 } | |
| 223 | |
| 224 | |
| 225 bool SocketBase::ReverseLookup(const RawAddr& addr, | |
| 226 char* host, | |
| 227 intptr_t host_len, | |
| 228 OSError** os_error) { | |
| 229 ASSERT(host_len >= NI_MAXHOST); | |
| 230 int status = NO_RETRY_EXPECTED( | |
| 231 getnameinfo(&addr.addr, SocketAddress::GetAddrLength(addr), host, | |
| 232 host_len, NULL, 0, NI_NAMEREQD)); | |
| 233 if (status != 0) { | |
| 234 ASSERT(*os_error == NULL); | |
| 235 *os_error = | |
| 236 new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); | |
| 237 return false; | |
| 238 } | |
| 239 return true; | |
| 240 } | |
| 241 | |
| 242 | |
| 243 bool SocketBase::ParseAddress(int type, const char* address, RawAddr* addr) { | |
| 244 int result; | |
| 245 if (type == SocketAddress::TYPE_IPV4) { | |
| 246 result = NO_RETRY_EXPECTED(inet_pton(AF_INET, address, &addr->in.sin_addr)); | |
| 247 } else { | |
| 248 ASSERT(type == SocketAddress::TYPE_IPV6); | |
| 249 result = | |
| 250 NO_RETRY_EXPECTED(inet_pton(AF_INET6, address, &addr->in6.sin6_addr)); | |
| 251 } | |
| 252 return (result == 1); | |
| 253 } | |
| 254 | |
| 255 | |
| 256 static bool ShouldIncludeIfaAddrs(struct ifaddrs* ifa, int lookup_family) { | |
| 257 if (ifa->ifa_addr == NULL) { | |
| 258 // OpenVPN's virtual device tun0. | |
| 259 return false; | |
| 260 } | |
| 261 int family = ifa->ifa_addr->sa_family; | |
| 262 return ((lookup_family == family) || | |
| 263 (((lookup_family == AF_UNSPEC) && | |
| 264 ((family == AF_INET) || (family == AF_INET6))))); | |
| 265 } | |
| 266 | |
| 267 | |
| 268 bool SocketBase::ListInterfacesSupported() { | |
| 269 return true; | |
| 270 } | |
| 271 | |
| 272 | |
| 273 AddressList<InterfaceSocketAddress>* SocketBase::ListInterfaces( | |
| 274 int type, | |
| 275 OSError** os_error) { | |
| 276 struct ifaddrs* ifaddr; | |
| 277 | |
| 278 int status = NO_RETRY_EXPECTED(getifaddrs(&ifaddr)); | |
| 279 if (status != 0) { | |
| 280 ASSERT(*os_error == NULL); | |
| 281 *os_error = | |
| 282 new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); | |
| 283 return NULL; | |
| 284 } | |
| 285 | |
| 286 int lookup_family = SocketAddress::FromType(type); | |
| 287 | |
| 288 intptr_t count = 0; | |
| 289 for (struct ifaddrs* ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { | |
| 290 if (ShouldIncludeIfaAddrs(ifa, lookup_family)) { | |
| 291 count++; | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 AddressList<InterfaceSocketAddress>* addresses = | |
| 296 new AddressList<InterfaceSocketAddress>(count); | |
| 297 int i = 0; | |
| 298 for (struct ifaddrs* ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { | |
| 299 if (ShouldIncludeIfaAddrs(ifa, lookup_family)) { | |
| 300 char* ifa_name = DartUtils::ScopedCopyCString(ifa->ifa_name); | |
| 301 addresses->SetAt( | |
| 302 i, new InterfaceSocketAddress(ifa->ifa_addr, ifa_name, | |
| 303 if_nametoindex(ifa->ifa_name))); | |
| 304 i++; | |
| 305 } | |
| 306 } | |
| 307 freeifaddrs(ifaddr); | |
| 308 return addresses; | |
| 309 } | |
| 310 | |
| 311 | |
| 312 void SocketBase::Close(intptr_t fd) { | |
| 313 ASSERT(fd >= 0); | |
| 314 VOID_TEMP_FAILURE_RETRY(close(fd)); | |
| 315 } | |
| 316 | |
| 317 | |
| 318 bool SocketBase::GetNoDelay(intptr_t fd, bool* enabled) { | |
| 319 int on; | |
| 320 socklen_t len = sizeof(on); | |
| 321 int err = NO_RETRY_EXPECTED(getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, | |
| 322 reinterpret_cast<void*>(&on), &len)); | |
| 323 if (err == 0) { | |
| 324 *enabled = (on == 1); | |
| 325 } | |
| 326 return (err == 0); | |
| 327 } | |
| 328 | |
| 329 | |
| 330 bool SocketBase::SetNoDelay(intptr_t fd, bool enabled) { | |
| 331 int on = enabled ? 1 : 0; | |
| 332 return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, | |
| 333 reinterpret_cast<char*>(&on), | |
| 334 sizeof(on))) == 0; | |
| 335 } | |
| 336 | |
| 337 | |
| 338 bool SocketBase::GetMulticastLoop(intptr_t fd, | |
| 339 intptr_t protocol, | |
| 340 bool* enabled) { | |
| 341 uint8_t on; | |
| 342 socklen_t len = sizeof(on); | |
| 343 int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; | |
| 344 int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_LOOP | |
| 345 : IPV6_MULTICAST_LOOP; | |
| 346 if (NO_RETRY_EXPECTED(getsockopt(fd, level, optname, | |
| 347 reinterpret_cast<char*>(&on), &len)) == 0) { | |
| 348 *enabled = (on == 1); | |
| 349 return true; | |
| 350 } | |
| 351 return false; | |
| 352 } | |
| 353 | |
| 354 | |
| 355 bool SocketBase::SetMulticastLoop(intptr_t fd, | |
| 356 intptr_t protocol, | |
| 357 bool enabled) { | |
| 358 int on = enabled ? 1 : 0; | |
| 359 int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; | |
| 360 int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_LOOP | |
| 361 : IPV6_MULTICAST_LOOP; | |
| 362 return NO_RETRY_EXPECTED(setsockopt( | |
| 363 fd, level, optname, reinterpret_cast<char*>(&on), sizeof(on))) == | |
| 364 0; | |
| 365 } | |
| 366 | |
| 367 | |
| 368 bool SocketBase::GetMulticastHops(intptr_t fd, intptr_t protocol, int* value) { | |
| 369 uint8_t v; | |
| 370 socklen_t len = sizeof(v); | |
| 371 int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; | |
| 372 int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_TTL | |
| 373 : IPV6_MULTICAST_HOPS; | |
| 374 if (NO_RETRY_EXPECTED(getsockopt(fd, level, optname, | |
| 375 reinterpret_cast<char*>(&v), &len)) == 0) { | |
| 376 *value = v; | |
| 377 return true; | |
| 378 } | |
| 379 return false; | |
| 380 } | |
| 381 | |
| 382 | |
| 383 bool SocketBase::SetMulticastHops(intptr_t fd, intptr_t protocol, int value) { | |
| 384 int v = value; | |
| 385 int level = protocol == SocketAddress::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6; | |
| 386 int optname = protocol == SocketAddress::TYPE_IPV4 ? IP_MULTICAST_TTL | |
| 387 : IPV6_MULTICAST_HOPS; | |
| 388 return NO_RETRY_EXPECTED(setsockopt( | |
| 389 fd, level, optname, reinterpret_cast<char*>(&v), sizeof(v))) == 0; | |
| 390 } | |
| 391 | |
| 392 | |
| 393 bool SocketBase::GetBroadcast(intptr_t fd, bool* enabled) { | |
| 394 int on; | |
| 395 socklen_t len = sizeof(on); | |
| 396 int err = NO_RETRY_EXPECTED(getsockopt(fd, SOL_SOCKET, SO_BROADCAST, | |
| 397 reinterpret_cast<char*>(&on), &len)); | |
| 398 if (err == 0) { | |
| 399 *enabled = (on == 1); | |
| 400 } | |
| 401 return (err == 0); | |
| 402 } | |
| 403 | |
| 404 | |
| 405 bool SocketBase::SetBroadcast(intptr_t fd, bool enabled) { | |
| 406 int on = enabled ? 1 : 0; | |
| 407 return NO_RETRY_EXPECTED(setsockopt(fd, SOL_SOCKET, SO_BROADCAST, | |
| 408 reinterpret_cast<char*>(&on), | |
| 409 sizeof(on))) == 0; | |
| 410 } | |
| 411 | |
| 412 | |
| 413 bool SocketBase::JoinMulticast(intptr_t fd, | |
| 414 const RawAddr& addr, | |
| 415 const RawAddr&, | |
| 416 int interfaceIndex) { | |
| 417 int proto = addr.addr.sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6; | |
| 418 struct group_req mreq; | |
| 419 mreq.gr_interface = interfaceIndex; | |
| 420 memmove(&mreq.gr_group, &addr.ss, SocketAddress::GetAddrLength(addr)); | |
| 421 return NO_RETRY_EXPECTED( | |
| 422 setsockopt(fd, proto, MCAST_JOIN_GROUP, &mreq, sizeof(mreq))) == 0; | |
| 423 } | |
| 424 | |
| 425 | |
| 426 bool SocketBase::LeaveMulticast(intptr_t fd, | |
| 427 const RawAddr& addr, | |
| 428 const RawAddr&, | |
| 429 int interfaceIndex) { | |
| 430 int proto = addr.addr.sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6; | |
| 431 struct group_req mreq; | |
| 432 mreq.gr_interface = interfaceIndex; | |
| 433 memmove(&mreq.gr_group, &addr.ss, SocketAddress::GetAddrLength(addr)); | |
| 434 return NO_RETRY_EXPECTED(setsockopt(fd, proto, MCAST_LEAVE_GROUP, &mreq, | |
| 435 sizeof(mreq))) == 0; | |
| 436 } | |
| 437 | |
| 438 } // namespace bin | |
| 439 } // namespace dart | |
| 440 | |
| 441 #endif // defined(HOST_OS_LINUX) | |
| 442 | |
| 443 #endif // !defined(DART_IO_DISABLED) | |
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Chromium Code Reviews
Issue 2791163004:
Reverting until bots clear up. (Closed)
