| // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #if !defined(DART_IO_DISABLED) |
| |
| #include "platform/globals.h" |
| #if defined(TARGET_OS_FUCHSIA) |
| |
| #include "bin/socket.h" |
| #include "bin/socket_fuchsia.h" |
| |
| #include <errno.h> // NOLINT |
| #include <fcntl.h> // NOLINT |
| #include <ifaddrs.h> // NOLINT |
| #include <net/if.h> // NOLINT |
| #include <netinet/tcp.h> // NOLINT |
| #include <stdio.h> // NOLINT |
| #include <stdlib.h> // NOLINT |
| #include <string.h> // NOLINT |
| #include <sys/ioctl.h> // NOLINT |
| #include <sys/stat.h> // NOLINT |
| #include <unistd.h> // NOLINT |
| |
| #include "bin/fdutils.h" |
| #include "bin/file.h" |
| #include "platform/signal_blocker.h" |
| |
| // #define SOCKET_LOG_INFO 1 |
| // #define SOCKET_LOG_ERROR 1 |
| |
| // define SOCKET_LOG_ERROR to get log messages only for errors. |
| // define SOCKET_LOG_INFO to get log messages for both information and errors. |
| #if defined(SOCKET_LOG_INFO) || defined(SOCKET_LOG_ERROR) |
| #define LOG_ERR(msg, ...) \ |
| { \ |
| int err = errno; \ |
| Log::PrintErr("Dart Socket ERROR: %s:%d: " msg, __FILE__, __LINE__, \ |
| ##__VA_ARGS__); \ |
| errno = err; \ |
| } |
| #if defined(SOCKET_LOG_INFO) |
| #define LOG_INFO(msg, ...) \ |
| Log::Print("Dart Socket INFO: %s:%d: " msg, __FILE__, __LINE__, ##__VA_ARGS__) |
| #else |
| #define LOG_INFO(msg, ...) |
| #endif // defined(SOCKET_LOG_INFO) |
| #else |
| #define LOG_ERR(msg, ...) |
| #define LOG_INFO(msg, ...) |
| #endif // defined(SOCKET_LOG_INFO) || defined(SOCKET_LOG_ERROR) |
| |
| namespace dart { |
| namespace bin { |
| |
| SocketAddress::SocketAddress(struct sockaddr* sa) { |
| ASSERT(INET6_ADDRSTRLEN >= INET_ADDRSTRLEN); |
| if (!Socket::FormatNumericAddress(*reinterpret_cast<RawAddr*>(sa), as_string_, |
| INET6_ADDRSTRLEN)) { |
| as_string_[0] = 0; |
| } |
| socklen_t salen = GetAddrLength(*reinterpret_cast<RawAddr*>(sa)); |
| memmove(reinterpret_cast<void*>(&addr_), sa, salen); |
| } |
| |
| |
| bool Socket::FormatNumericAddress(const RawAddr& addr, char* address, int len) { |
| socklen_t salen = SocketAddress::GetAddrLength(addr); |
| LOG_INFO("Socket::FormatNumericAddress: calling getnameinfo\n"); |
| return (NO_RETRY_EXPECTED(getnameinfo(&addr.addr, salen, address, len, NULL, |
| 0, NI_NUMERICHOST) == 0)); |
| } |
| |
| |
| bool Socket::Initialize() { |
| // Nothing to do on Fuchsia. |
| return true; |
| } |
| |
| |
| static intptr_t Create(const RawAddr& addr) { |
| LOG_INFO("Create: calling socket(SOCK_STREAM)\n"); |
| intptr_t fd = NO_RETRY_EXPECTED(socket(addr.ss.ss_family, SOCK_STREAM, 0)); |
| if (fd < 0) { |
| LOG_ERR("Create: socket(SOCK_STREAM) failed\n"); |
| return -1; |
| } |
| LOG_INFO("Create: socket(SOCK_STREAM) -> fd %ld\n", fd); |
| if (!FDUtils::SetCloseOnExec(fd)) { |
| LOG_ERR("Create: FDUtils::SetCloseOnExec(%ld) failed\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| return fd; |
| } |
| |
| |
| static intptr_t Connect(intptr_t fd, const RawAddr& addr) { |
| LOG_INFO("Connect: calling connect(%ld)\n", fd); |
| intptr_t result = NO_RETRY_EXPECTED( |
| connect(fd, &addr.addr, SocketAddress::GetAddrLength(addr))); |
| if ((result == 0) || (errno == EINPROGRESS)) { |
| return fd; |
| } |
| LOG_ERR("Connect: connect(%ld) failed\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| |
| |
| intptr_t Socket::CreateConnect(const RawAddr& addr) { |
| intptr_t fd = Create(addr); |
| if (fd < 0) { |
| return fd; |
| } |
| if (!FDUtils::SetNonBlocking(fd)) { |
| LOG_ERR("CreateConnect: FDUtils::SetNonBlocking(%ld) failed\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| return Connect(fd, addr); |
| } |
| |
| |
| intptr_t Socket::CreateBindConnect(const RawAddr& addr, |
| const RawAddr& source_addr) { |
| LOG_ERR("Socket::CreateBindConnect is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return -1; |
| } |
| |
| |
| bool Socket::IsBindError(intptr_t error_number) { |
| return error_number == EADDRINUSE || error_number == EADDRNOTAVAIL || |
| error_number == EINVAL; |
| } |
| |
| |
| intptr_t Socket::Available(intptr_t fd) { |
| intptr_t available = FDUtils::AvailableBytes(fd); |
| LOG_INFO("Socket::Available(%ld) = %ld\n", fd, available); |
| return available; |
| } |
| |
| |
| intptr_t Socket::Read(intptr_t fd, void* buffer, intptr_t num_bytes) { |
| ASSERT(fd >= 0); |
| LOG_INFO("Socket::Read: calling read(%ld, %p, %ld)\n", fd, buffer, num_bytes); |
| ssize_t read_bytes = NO_RETRY_EXPECTED(read(fd, buffer, num_bytes)); |
| ASSERT(EAGAIN == EWOULDBLOCK); |
| if ((read_bytes == -1) && (errno == EWOULDBLOCK)) { |
| // If the read would block we need to retry and therefore return 0 |
| // as the number of bytes written. |
| read_bytes = 0; |
| } else if (read_bytes == -1) { |
| LOG_ERR("Socket::Read: read(%ld, %p, %ld) failed\n", fd, buffer, num_bytes); |
| } else { |
| LOG_INFO("Socket::Read: read(%ld, %p, %ld) succeeded\n", fd, buffer, |
| num_bytes); |
| } |
| return read_bytes; |
| } |
| |
| |
| intptr_t Socket::RecvFrom(intptr_t fd, |
| void* buffer, |
| intptr_t num_bytes, |
| RawAddr* addr) { |
| LOG_ERR("Socket::RecvFrom is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return -1; |
| } |
| |
| |
| intptr_t Socket::Write(intptr_t fd, const void* buffer, intptr_t num_bytes) { |
| ASSERT(fd >= 0); |
| LOG_INFO("Socket::Write: calling write(%ld, %p, %ld)\n", fd, buffer, |
| num_bytes); |
| ssize_t written_bytes = NO_RETRY_EXPECTED(write(fd, buffer, num_bytes)); |
| ASSERT(EAGAIN == EWOULDBLOCK); |
| if ((written_bytes == -1) && (errno == EWOULDBLOCK)) { |
| // If the would block we need to retry and therefore return 0 as |
| // the number of bytes written. |
| written_bytes = 0; |
| } else if (written_bytes == -1) { |
| LOG_ERR("Socket::Write: write(%ld, %p, %ld) failed\n", fd, buffer, |
| num_bytes); |
| } else { |
| LOG_INFO("Socket::Write: write(%ld, %p, %ld) succeeded\n", fd, buffer, |
| num_bytes); |
| } |
| return written_bytes; |
| } |
| |
| |
| intptr_t Socket::SendTo(intptr_t fd, |
| const void* buffer, |
| intptr_t num_bytes, |
| const RawAddr& addr) { |
| LOG_ERR("Socket::SendTo is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return -1; |
| } |
| |
| |
| intptr_t Socket::GetPort(intptr_t fd) { |
| ASSERT(fd >= 0); |
| RawAddr raw; |
| socklen_t size = sizeof(raw); |
| LOG_INFO("Socket::GetPort: calling getsockname(%ld)\n", fd); |
| if (NO_RETRY_EXPECTED(getsockname(fd, &raw.addr, &size))) { |
| return 0; |
| } |
| return SocketAddress::GetAddrPort(raw); |
| } |
| |
| |
| SocketAddress* Socket::GetRemotePeer(intptr_t fd, intptr_t* port) { |
| ASSERT(fd >= 0); |
| RawAddr raw; |
| socklen_t size = sizeof(raw); |
| if (NO_RETRY_EXPECTED(getpeername(fd, &raw.addr, &size))) { |
| return NULL; |
| } |
| *port = SocketAddress::GetAddrPort(raw); |
| return new SocketAddress(&raw.addr); |
| } |
| |
| |
| void Socket::GetError(intptr_t fd, OSError* os_error) { |
| LOG_ERR("Socket::GetError is unimplemented\n"); |
| UNIMPLEMENTED(); |
| } |
| |
| |
| int Socket::GetType(intptr_t fd) { |
| LOG_ERR("Socket::GetType is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return File::kOther; |
| } |
| |
| |
| intptr_t Socket::GetStdioHandle(intptr_t num) { |
| LOG_ERR("Socket::GetStdioHandle is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return num; |
| } |
| |
| |
| AddressList<SocketAddress>* Socket::LookupAddress(const char* host, |
| int type, |
| OSError** os_error) { |
| // Perform a name lookup for a host name. |
| struct addrinfo hints; |
| memset(&hints, 0, sizeof(hints)); |
| hints.ai_family = SocketAddress::FromType(type); |
| hints.ai_socktype = SOCK_STREAM; |
| hints.ai_flags = AI_ADDRCONFIG; |
| hints.ai_protocol = IPPROTO_TCP; |
| struct addrinfo* info = NULL; |
| LOG_INFO("Socket::LookupAddress: calling getaddrinfo\n"); |
| int status = NO_RETRY_EXPECTED(getaddrinfo(host, 0, &hints, &info)); |
| if (status != 0) { |
| // We failed, try without AI_ADDRCONFIG. This can happen when looking up |
| // e.g. '::1', when there are no global IPv6 addresses. |
| hints.ai_flags = 0; |
| LOG_INFO("Socket::LookupAddress: calling getaddrinfo again\n"); |
| status = NO_RETRY_EXPECTED(getaddrinfo(host, 0, &hints, &info)); |
| if (status != 0) { |
| ASSERT(*os_error == NULL); |
| *os_error = |
| new OSError(status, gai_strerror(status), OSError::kGetAddressInfo); |
| return NULL; |
| } |
| } |
| intptr_t count = 0; |
| for (struct addrinfo* c = info; c != NULL; c = c->ai_next) { |
| if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) { |
| count++; |
| } |
| } |
| intptr_t i = 0; |
| AddressList<SocketAddress>* addresses = new AddressList<SocketAddress>(count); |
| for (struct addrinfo* c = info; c != NULL; c = c->ai_next) { |
| if ((c->ai_family == AF_INET) || (c->ai_family == AF_INET6)) { |
| addresses->SetAt(i, new SocketAddress(c->ai_addr)); |
| i++; |
| } |
| } |
| freeaddrinfo(info); |
| return addresses; |
| } |
| |
| |
| bool Socket::ReverseLookup(const RawAddr& addr, |
| char* host, |
| intptr_t host_len, |
| OSError** os_error) { |
| LOG_ERR("Socket::ReverseLookup is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::ParseAddress(int type, const char* address, RawAddr* addr) { |
| int result; |
| if (type == SocketAddress::TYPE_IPV4) { |
| result = NO_RETRY_EXPECTED(inet_pton(AF_INET, address, &addr->in.sin_addr)); |
| } else { |
| ASSERT(type == SocketAddress::TYPE_IPV6); |
| result = |
| NO_RETRY_EXPECTED(inet_pton(AF_INET6, address, &addr->in6.sin6_addr)); |
| } |
| return (result == 1); |
| } |
| |
| |
| intptr_t Socket::CreateBindDatagram(const RawAddr& addr, bool reuseAddress) { |
| LOG_ERR("Socket::CreateBindDatagram is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return -1; |
| } |
| |
| |
| bool Socket::ListInterfacesSupported() { |
| return false; |
| } |
| |
| |
| AddressList<InterfaceSocketAddress>* Socket::ListInterfaces( |
| int type, |
| OSError** os_error) { |
| UNIMPLEMENTED(); |
| return NULL; |
| } |
| |
| |
| intptr_t ServerSocket::CreateBindListen(const RawAddr& addr, |
| intptr_t backlog, |
| bool v6_only) { |
| LOG_INFO("ServerSocket::CreateBindListen: calling socket(SOCK_STREAM)\n"); |
| intptr_t fd = NO_RETRY_EXPECTED(socket(addr.ss.ss_family, SOCK_STREAM, 0)); |
| if (fd < 0) { |
| LOG_ERR("ServerSocket::CreateBindListen: socket() failed\n"); |
| return -1; |
| } |
| LOG_INFO("ServerSocket::CreateBindListen: socket(SOCK_STREAM) -> %ld\n", fd); |
| |
| if (!FDUtils::SetCloseOnExec(fd)) { |
| LOG_ERR("ServerSocket::CreateBindListen: SetCloseOnExec(%ld) failed\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| |
| LOG_INFO("ServerSocket::CreateBindListen: calling setsockopt(%ld)\n", fd); |
| int optval = 1; |
| VOID_NO_RETRY_EXPECTED( |
| setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval))); |
| |
| if (addr.ss.ss_family == AF_INET6) { |
| optval = v6_only ? 1 : 0; |
| LOG_INFO("ServerSocket::CreateBindListen: calling setsockopt(%ld)\n", fd); |
| VOID_NO_RETRY_EXPECTED( |
| setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &optval, sizeof(optval))); |
| } |
| |
| LOG_INFO("ServerSocket::CreateBindListen: calling bind(%ld)\n", fd); |
| if (NO_RETRY_EXPECTED( |
| bind(fd, &addr.addr, SocketAddress::GetAddrLength(addr))) < 0) { |
| LOG_ERR("ServerSocket::CreateBindListen: bind(%ld) failed\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| LOG_INFO("ServerSocket::CreateBindListen: bind(%ld) succeeded\n", fd); |
| |
| // Test for invalid socket port 65535 (some browsers disallow it). |
| if ((SocketAddress::GetAddrPort(addr) == 0) && |
| (Socket::GetPort(fd) == 65535)) { |
| // Don't close the socket until we have created a new socket, ensuring |
| // that we do not get the bad port number again. |
| intptr_t new_fd = CreateBindListen(addr, backlog, v6_only); |
| FDUtils::SaveErrorAndClose(fd); |
| return new_fd; |
| } |
| |
| LOG_INFO("ServerSocket::CreateBindListen: calling listen(%ld)\n", fd); |
| if (NO_RETRY_EXPECTED(listen(fd, backlog > 0 ? backlog : SOMAXCONN)) != 0) { |
| LOG_ERR("ServerSocket::CreateBindListen: listen failed(%ld)\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| LOG_INFO("ServerSocket::CreateBindListen: listen(%ld) succeeded\n", fd); |
| |
| if (!FDUtils::SetNonBlocking(fd)) { |
| LOG_ERR("CreateBindListen: FDUtils::SetNonBlocking(%ld) failed\n", fd); |
| FDUtils::SaveErrorAndClose(fd); |
| return -1; |
| } |
| return fd; |
| } |
| |
| |
| bool ServerSocket::StartAccept(intptr_t fd) { |
| USE(fd); |
| return true; |
| } |
| |
| |
| static bool IsTemporaryAcceptError(int error) { |
| // On Linux a number of protocol errors should be treated as EAGAIN. |
| // These are the ones for TCP/IP. |
| return (error == EAGAIN) || (error == ENETDOWN) || (error == EPROTO) || |
| (error == ENOPROTOOPT) || (error == EHOSTDOWN) || (error == ENONET) || |
| (error == EHOSTUNREACH) || (error == EOPNOTSUPP) || |
| (error == ENETUNREACH); |
| } |
| |
| |
| intptr_t ServerSocket::Accept(intptr_t fd) { |
| intptr_t socket; |
| struct sockaddr clientaddr; |
| socklen_t addrlen = sizeof(clientaddr); |
| LOG_INFO("ServerSocket::Accept: calling accept(%ld)\n", fd); |
| socket = NO_RETRY_EXPECTED(accept(fd, &clientaddr, &addrlen)); |
| if (socket == -1) { |
| if (IsTemporaryAcceptError(errno)) { |
| // We need to signal to the caller that this is actually not an |
| // error. We got woken up from the poll on the listening socket, |
| // but there is no connection ready to be accepted. |
| ASSERT(kTemporaryFailure != -1); |
| socket = kTemporaryFailure; |
| } else { |
| LOG_ERR("ServerSocket::Accept: accept(%ld) failed\n", fd); |
| } |
| } else { |
| LOG_INFO("ServerSocket::Accept: accept(%ld) -> socket %ld\n", fd, socket); |
| if (!FDUtils::SetCloseOnExec(socket)) { |
| LOG_ERR("FDUtils::SetCloseOnExec(%ld) failed\n", socket); |
| FDUtils::SaveErrorAndClose(socket); |
| return -1; |
| } |
| if (!FDUtils::SetNonBlocking(socket)) { |
| LOG_ERR("FDUtils::SetNonBlocking(%ld) failed\n", socket); |
| FDUtils::SaveErrorAndClose(socket); |
| return -1; |
| } |
| } |
| return socket; |
| } |
| |
| |
| void Socket::Close(intptr_t fd) { |
| ASSERT(fd >= 0); |
| NO_RETRY_EXPECTED(close(fd)); |
| } |
| |
| |
| bool Socket::GetNoDelay(intptr_t fd, bool* enabled) { |
| LOG_ERR("Socket::GetNoDelay is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::SetNoDelay(intptr_t fd, bool enabled) { |
| int on = enabled ? 1 : 0; |
| return NO_RETRY_EXPECTED(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, |
| reinterpret_cast<char*>(&on), |
| sizeof(on))) == 0; |
| } |
| |
| |
| bool Socket::GetMulticastLoop(intptr_t fd, intptr_t protocol, bool* enabled) { |
| LOG_ERR("Socket::GetMulticastLoop is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::SetMulticastLoop(intptr_t fd, intptr_t protocol, bool enabled) { |
| LOG_ERR("Socket::SetMulticastLoop is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::GetMulticastHops(intptr_t fd, intptr_t protocol, int* value) { |
| LOG_ERR("Socket::GetMulticastHops is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::SetMulticastHops(intptr_t fd, intptr_t protocol, int value) { |
| LOG_ERR("Socket::SetMulticastHops is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::GetBroadcast(intptr_t fd, bool* enabled) { |
| LOG_ERR("Socket::GetBroadcast is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::SetBroadcast(intptr_t fd, bool enabled) { |
| LOG_ERR("Socket::SetBroadcast is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::JoinMulticast(intptr_t fd, |
| const RawAddr& addr, |
| const RawAddr&, |
| int interfaceIndex) { |
| LOG_ERR("Socket::JoinMulticast is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| |
| bool Socket::LeaveMulticast(intptr_t fd, |
| const RawAddr& addr, |
| const RawAddr&, |
| int interfaceIndex) { |
| LOG_ERR("Socket::LeaveMulticast is unimplemented\n"); |
| UNIMPLEMENTED(); |
| return false; |
| } |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // defined(TARGET_OS_FUCHSIA) |
| |
| #endif // !defined(DART_IO_DISABLED) |