blob: 885ec97063dff66d65987aecf07290ce08a215cd [file] [log] [blame]
// 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.
#include "platform/globals.h"
#if defined(DART_HOST_OS_FUCHSIA)
#include "bin/socket.h"
#include <errno.h> // NOLINT
#include "bin/eventhandler.h"
#include "bin/fdutils.h"
#include "platform/signal_blocker.h"
#include "platform/syslog.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; \
Syslog::PrintErr("Dart Socket ERROR: %s:%d: " msg, __FILE__, __LINE__, \
##__VA_ARGS__); \
errno = err; \
}
#if defined(SOCKET_LOG_INFO)
#define LOG_INFO(msg, ...) \
Syslog::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 {
Socket::Socket(intptr_t fd)
: ReferenceCounted(),
fd_(fd),
isolate_port_(Dart_GetMainPortId()),
port_(ILLEGAL_PORT),
udp_receive_buffer_(nullptr) {}
void Socket::SetClosedFd() {
fd_ = kClosedFd;
}
void Socket::CloseFd() {
ASSERT(fd_ != kClosedFd);
IOHandle* handle = reinterpret_cast<IOHandle*>(fd_);
ASSERT(handle != nullptr);
handle->Release();
SetClosedFd();
}
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;
}
IOHandle* io_handle = new IOHandle(fd);
return reinterpret_cast<intptr_t>(io_handle);
}
static intptr_t Connect(intptr_t fd, const RawAddr& addr) {
IOHandle* handle = reinterpret_cast<IOHandle*>(fd);
LOG_INFO("Connect: calling connect(%ld)\n", handle->fd());
intptr_t result = NO_RETRY_EXPECTED(
connect(handle->fd(), &addr.addr, SocketAddress::GetAddrLength(addr)));
if ((result == 0) || (errno == EINPROGRESS)) {
return reinterpret_cast<intptr_t>(handle);
}
LOG_ERR("Connect: connect(%ld) failed\n", handle->fd());
FDUtils::SaveErrorAndClose(handle->fd());
handle->Release();
return -1;
}
intptr_t Socket::CreateConnect(const RawAddr& addr) {
intptr_t fd = Create(addr);
if (fd < 0) {
return fd;
}
IOHandle* handle = reinterpret_cast<IOHandle*>(fd);
if (!FDUtils::SetNonBlocking(handle->fd())) {
LOG_ERR("CreateConnect: FDUtils::SetNonBlocking(%ld) failed\n",
handle->fd());
FDUtils::SaveErrorAndClose(handle->fd());
handle->Release();
return -1;
}
return Connect(fd, addr);
}
intptr_t Socket::CreateUnixDomainConnect(const RawAddr& addr) {
// Fuchsia does not support unix domain socket
errno = ENOSYS;
return -1;
}
intptr_t Socket::CreateBindConnect(const RawAddr& addr,
const RawAddr& source_addr) {
errno = ENOSYS;
return -1;
}
intptr_t Socket::CreateUnixDomainBindConnect(const RawAddr& addr,
const RawAddr& source_addr) {
// Fuchsia does not support unix domain socket
errno = ENOSYS;
return -1;
}
intptr_t Socket::CreateBindDatagram(const RawAddr& addr,
bool reuseAddress,
bool reusePort,
int ttl) {
errno = ENOSYS;
return -1;
}
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);
IOHandle* io_handle = new IOHandle(fd);
// Test for invalid socket port 65535 (some browsers disallow it).
if ((SocketAddress::GetAddrPort(addr) == 0) &&
(SocketBase::GetPort(reinterpret_cast<intptr_t>(io_handle)) == 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);
io_handle->Release();
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);
io_handle->Release();
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);
io_handle->Release();
return -1;
}
return reinterpret_cast<intptr_t>(io_handle);
}
intptr_t ServerSocket::CreateUnixDomainBindListen(const RawAddr& addr,
intptr_t backlog) {
// Fuchsia does not support unix domain socket.
errno = ENOSYS;
return -1;
}
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) {
IOHandle* listen_handle = reinterpret_cast<IOHandle*>(fd);
intptr_t socket;
struct sockaddr clientaddr;
socklen_t addrlen = sizeof(clientaddr);
LOG_INFO("ServerSocket::Accept: calling accept(%ld)\n", fd);
socket = listen_handle->Accept(&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 {
IOHandle* io_handle = new IOHandle(socket);
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);
io_handle->Release();
return -1;
}
if (!FDUtils::SetNonBlocking(socket)) {
LOG_ERR("FDUtils::SetNonBlocking(%ld) failed\n", socket);
FDUtils::SaveErrorAndClose(socket);
io_handle->Release();
return -1;
}
socket = reinterpret_cast<intptr_t>(io_handle);
}
return socket;
}
} // namespace bin
} // namespace dart
#endif // defined(DART_HOST_OS_FUCHSIA)