Slava Egorov
e50d3b98a3
Basic support for Unix domain sockets on Windows within the limitations of the operating system itself: no support for abstract addresses, datagram or packet sockets and ancillary data. This also fixes File::GetType on Windows to correctly identify reparse points representing AF_UNIX sockets as such, rather then identify them as links. Finally, it is worth noting that there is an existing discrepancy between POSIX OSes and Windows: on POSIX OSes File(sockPath).existsSync() returns true, but on Windows the same code returns false because Unix domain sockets are not considered regular files by stat. This CL does a bunch of refactoring around RawAddr class which surves as a wrapper around various structures in sockaddr_* family. Distinguishing anonymous AF_UNIX address from abstract AF_UNIX address requires passing around the length of the address structure. Thus we incorporate this information into RawAddr. This will also make possible to properly support full-range of abstract AF_UNIX addresses in the future because supporting these requires properly handling embedded NUL bytes. (See https://github.com/dart-lang/sdk/issues/46158). Fixes https://github.com/dart-lang/sdk/issues/41161 TEST=standalone/io/unix_socket Cq-Include-Trybots: luci.dart.try:vm-fuchsia-release-x64-try Change-Id: I016cb33ebdd62f0cac1ae97d822105366a6a6964 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/457720 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Slava Egorov <vegorov@google.com>
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(DART_HOST_OS_WINDOWS)
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#include "bin/socket_base.h"
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#include "bin/sync_socket.h"
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namespace dart {
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namespace bin {
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bool SynchronousSocket::Initialize() {
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return SocketBase::Initialize();
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}
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static intptr_t Create(const RawAddr& addr) {
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const intptr_t type = SOCK_STREAM;
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SOCKET s = WSASocket(addr.ss.ss_family, type, 0, nullptr, 0, 0);
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return (s == INVALID_SOCKET) ? -1 : s;
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}
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static intptr_t Connect(intptr_t fd, const RawAddr& addr) {
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SOCKET socket = static_cast<SOCKET>(fd);
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intptr_t result = connect(socket, &addr.addr, addr.size);
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return (result == SOCKET_ERROR) ? -1 : socket;
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}
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intptr_t SynchronousSocket::CreateConnect(const RawAddr& addr) {
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intptr_t fd = Create(addr);
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return (fd < 0) ? fd : Connect(fd, addr);
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}
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intptr_t SynchronousSocket::Available(intptr_t fd) {
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SOCKET socket = static_cast<SOCKET>(fd);
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DWORD available;
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intptr_t result = ioctlsocket(socket, FIONREAD, &available);
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return (result == SOCKET_ERROR) ? -1 : static_cast<intptr_t>(available);
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}
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intptr_t SynchronousSocket::GetPort(intptr_t fd) {
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SOCKET socket = static_cast<SOCKET>(fd);
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RawAddr raw;
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if (getsockname(socket, &raw.addr, &raw.size) == SOCKET_ERROR) {
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return 0;
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}
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return SocketAddress::GetAddrPort(raw);
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}
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SocketAddress* SynchronousSocket::GetRemotePeer(intptr_t fd, intptr_t* port) {
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SOCKET socket = static_cast<SOCKET>(fd);
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RawAddr raw;
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if (getpeername(socket, &raw.addr, &raw.size)) {
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return nullptr;
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}
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*port = SocketAddress::GetAddrPort(raw);
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// Clear the port before calling WSAAddressToString as WSAAddressToString
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// includes the port in the formatted string.
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SocketAddress::SetAddrPort(&raw, 0);
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return new SocketAddress(raw);
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}
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intptr_t SynchronousSocket::Read(intptr_t fd,
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void* buffer,
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intptr_t num_bytes) {
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SOCKET socket = static_cast<SOCKET>(fd);
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return recv(socket, reinterpret_cast<char*>(buffer), num_bytes, 0);
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}
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intptr_t SynchronousSocket::Write(intptr_t fd,
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const void* buffer,
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intptr_t num_bytes) {
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SOCKET socket = static_cast<SOCKET>(fd);
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return send(socket, reinterpret_cast<const char*>(buffer), num_bytes, 0);
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}
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void SynchronousSocket::ShutdownRead(intptr_t fd) {
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SOCKET socket = static_cast<SOCKET>(fd);
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shutdown(socket, SD_RECEIVE);
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}
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void SynchronousSocket::ShutdownWrite(intptr_t fd) {
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SOCKET socket = static_cast<SOCKET>(fd);
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shutdown(socket, SD_SEND);
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}
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void SynchronousSocket::Close(intptr_t fd) {
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SOCKET socket = static_cast<SOCKET>(fd);
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closesocket(socket);
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_WINDOWS)
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