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xsocket.cc
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xsocket.cc
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/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include "src/xenia/kernel/xsocket.h"
#include <cstring>
#include "xenia/base/platform.h"
#include "xenia/kernel/kernel_state.h"
#include "xenia/kernel/xam/xam_module.h"
#include "xenia/kernel/xboxkrnl/xboxkrnl_threading.h"
// #include "xenia/kernel/xnet.h"
#include <xenia/kernel/XLiveAPI.h>
using namespace std::chrono_literals;
namespace xe {
namespace kernel {
XSocket::XSocket(KernelState* kernel_state)
: XObject(kernel_state, kObjectType) {}
XSocket::XSocket(KernelState* kernel_state, uint64_t native_handle)
: XObject(kernel_state, kObjectType), native_handle_(native_handle) {}
XSocket::~XSocket() { Close(); }
X_STATUS XSocket::Initialize(AddressFamily af, Type type, Protocol proto) {
af_ = af;
type_ = type;
proto_ = proto;
if (proto == Protocol::X_IPPROTO_VDP) {
// VDP is a layer on top of UDP.
proto = Protocol::X_IPPROTO_UDP;
}
native_handle_ = socket(af, type, proto);
if (native_handle_ == -1) {
return X_STATUS_UNSUCCESSFUL;
}
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::Close() {
std::unique_lock lock(receive_mutex_);
if (active_overlapped_ && !(active_overlapped_->offset_high & 1)) {
active_overlapped_->offset_high |= 2;
}
lock.unlock();
std::unique_lock socket_lock(receive_socket_mutex_);
#if XE_PLATFORM_WIN32
int ret = closesocket(native_handle_);
#elif XE_PLATFORM_LINUX
int ret = close(native_handle_);
#endif
socket_lock.unlock();
if (ret != 0) {
return X_STATUS_UNSUCCESSFUL;
}
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::GetOption(uint32_t level, uint32_t optname, void* optval_ptr,
int* optlen) {
int ret =
getsockopt(native_handle_, level, optname, (char*)optval_ptr, optlen);
if (ret < 0) {
// TODO: WSAGetLastError()
return X_STATUS_UNSUCCESSFUL;
}
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::SetOption(uint32_t level, uint32_t optname, void* optval_ptr,
uint32_t optlen) {
if (level == 0xFFFF && (optname == 0x5801 || optname == 0x5802)) {
// Disable socket encryption
secure_ = false;
return X_STATUS_SUCCESS;
}
int ret =
setsockopt(native_handle_, level, optname, (char*)optval_ptr, optlen);
if (ret < 0) {
// TODO: WSAGetLastError()
return X_STATUS_UNSUCCESSFUL;
}
// SO_BROADCAST
if (level == 0xFFFF && optname == 0x0020) {
broadcast_socket_ = true;
}
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::IOControl(uint32_t cmd, uint8_t* arg_ptr) {
#ifdef XE_PLATFORM_WIN32
int ret = ioctlsocket(native_handle_, cmd, (u_long*)arg_ptr);
if (ret < 0) {
// TODO: Get last error
return X_STATUS_UNSUCCESSFUL;
}
return X_STATUS_SUCCESS;
#elif XE_PLATFORM_LINUX
return X_STATUS_UNSUCCESSFUL;
#endif
}
X_STATUS XSocket::Connect(const XSOCKADDR_IN* name, int name_len) {
XSOCKADDR_IN sa_in = XSOCKADDR_IN();
memcpy(&sa_in, name, sizeof(XSOCKADDR_IN));
sa_in.address_port =
XLiveAPI::upnp_handler->get_mapped_connect_port(name->address_port);
int ret = connect(native_handle_, &sa_in.to_host(), name_len);
if (ret < 0) {
return X_STATUS_UNSUCCESSFUL;
}
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::Bind(const XSOCKADDR_IN* name, int name_len) {
XSOCKADDR_IN sa_in = XSOCKADDR_IN();
memcpy(&sa_in, name, sizeof(XSOCKADDR_IN));
sa_in.address_port =
XLiveAPI::upnp_handler->get_mapped_connect_port(name->address_port);
int ret = bind(native_handle_, &sa_in.to_host(), name_len);
if (ret < 0) {
return X_STATUS_UNSUCCESSFUL;
}
bound_ = true;
bound_port_ = name->address_port;
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::Listen(int backlog) {
int ret = listen(native_handle_, backlog);
if (ret < 0) {
return X_STATUS_UNSUCCESSFUL;
}
return X_STATUS_SUCCESS;
}
object_ref<XSocket> XSocket::Accept(XSOCKADDR_IN* name, int* name_len) {
sockaddr sa = {};
int addrlen = 0;
const bool is_name_and_name_len_available = name && name_len;
if (is_name_and_name_len_available) {
addrlen = byte_swap(*name_len);
}
const uint64_t ret = accept(native_handle_, name ? &sa : nullptr,
name_len ? &addrlen : nullptr);
if (ret == -1) {
return nullptr;
}
if (is_name_and_name_len_available) {
name->to_guest(&sa);
*name_len = byte_swap(addrlen);
}
// Create a kernel object to represent the new socket, and copy parameters
// over.
auto socket = object_ref<XSocket>(new XSocket(kernel_state_, ret));
socket->af_ = af_;
socket->type_ = type_;
socket->proto_ = proto_;
return socket;
}
int XSocket::Shutdown(int how) { return shutdown(native_handle_, how); }
int XSocket::Recv(uint8_t* buf, uint32_t buf_len, uint32_t flags) {
return recv(native_handle_, reinterpret_cast<char*>(buf), buf_len, flags);
}
int XSocket::RecvFrom(uint8_t* buf, uint32_t buf_len, uint32_t flags,
XSOCKADDR_IN* from, uint32_t* from_len) {
sockaddr sa = from->to_host();
int ret = recvfrom(native_handle_, reinterpret_cast<char*>(buf), buf_len,
flags, from ? &sa : nullptr, (int*)from_len);
from->to_guest(&sa);
return ret;
}
struct WSARecvFromData {
XWSABUF* buffers;
uint32_t num_buffers;
uint32_t flags;
XSOCKADDR_IN* from;
xe::be<uint32_t>* from_len;
XWSAOVERLAPPED* overlapped;
};
int XSocket::PollWSARecvFrom(bool wait, WSARecvFromData receive_async_data) {
receive_async_data.overlapped->internal_high = 0;
struct pollfd fds[1];
fds->fd = native_handle_;
fds->events = POLLIN;
int ret;
do {
#ifdef XE_PLATFORM_WIN32
ret = WSAPoll(fds, 1, wait ? 1000 : 0);
#else
ret = poll(fds, 1, wait ? 1000 : 0);
#endif
if (receive_async_data.overlapped->offset_high & 2) {
receive_async_data.overlapped->internal_high =
(uint32_t)X_WSAError::X_WSA_OPERATION_ABORTED;
ret = -1;
goto threadexit;
}
} while (ret == 0 && wait);
if (ret < 0) {
receive_async_data.overlapped->internal_high = WSAGetLastError();
XELOGE("XSocket receive thread failed polling with error {}",
receive_async_data.overlapped->internal_high);
goto threadexit;
} else if (ret == 0) {
receive_async_data.overlapped->internal_high =
(uint32_t)X_WSAError::X_WSAEWOULDBLOCK;
ret = -1;
goto threadexit;
}
#ifdef XE_PLATFORM_WIN32
DWORD bytes_received = 0;
DWORD flags = receive_async_data.flags;
auto buffers = new WSABUF[receive_async_data.num_buffers];
for (auto i = 0u; i < receive_async_data.num_buffers; i++) {
buffers[i].len = receive_async_data.buffers[i].len;
buffers[i].buf =
reinterpret_cast<CHAR*>(kernel_state()->memory()->TranslateVirtual(
receive_async_data.buffers[i].buf_ptr));
}
{
std::unique_lock socket_lock(receive_socket_mutex_);
sockaddr* sa = nullptr;
if (receive_async_data.from) {
sa = const_cast<sockaddr*>(&receive_async_data.from->to_host());
}
ret = ::WSARecvFrom(native_handle_, buffers, receive_async_data.num_buffers,
&bytes_received, &flags, sa,
(LPINT)receive_async_data.from_len, nullptr, nullptr);
if (ret < 0) {
receive_async_data.overlapped->internal_high = GetLastWSAError();
} else {
receive_async_data.overlapped->internal = bytes_received;
}
receive_async_data.from->to_guest(sa);
socket_lock.unlock();
}
receive_async_data.overlapped->offset = flags;
#else
auto buffers = new iovec[receive_async_data.num_buffers];
for (auto i = 0u; i < receive_async_data.num_buffers; i++) {
buffers[i].iov_len = receive_async_data.buffers[i].len;
buffers[i].iov_base = kernel_state()->memory()->TranslateVirtual(
receive_async_data.buffers[i].buf_ptr);
}
msghdr msg;
std::memset(&msg, 0, sizeof(msg));
msg.msg_name = &n_from;
msg.msg_namelen = n_from_len;
msg.msg_iov = buffers;
msg.msg_iovlen = receive_async_data.num_buffers;
{
std::unique_lock socket_lock(receive_socket_mutex_);
ret = recvmsg(native_handle_, &msg, receive_async_data.flags);
if (ret < 0) {
receive_async_data.overlapped->internal_high = GetLastWSAError();
} else {
receive_async_data.overlapped->internal = ret;
}
socket_lock.unlock();
}
flags = 0;
if (msg.msg_flags & MSG_TRUNC) flags |= MSG_PARTIAL;
if (msg.msg_flags & MSG_OOB) flags |= MSG_OOB;
receive_async_data.overlapped->offset = flags;
if (ret >= 0) {
SetLastWSAError((X_WSAError)0);
ret = 0;
}
#endif
delete[] buffers;
threadexit:
std::unique_lock lock(receive_mutex_);
if (wait) {
delete[] receive_async_data.buffers;
}
receive_async_data.overlapped->offset_high |= 1;
if (wait && receive_async_data.overlapped->event_handle) {
xboxkrnl::xeNtSetEvent(receive_async_data.overlapped->event_handle,
nullptr);
}
receive_cv_.notify_all();
lock.unlock();
return ret;
}
int XSocket::WSARecvFrom(XWSABUF* buffers, uint32_t num_buffers,
xe::be<uint32_t>* num_bytes_recv_ptr,
xe::be<uint32_t>* flags_ptr, XSOCKADDR_IN* from_ptr,
xe::be<uint32_t>* fromlen_ptr,
XWSAOVERLAPPED* overlapped_ptr) {
if (!buffers || !flags_ptr || (from_ptr && !fromlen_ptr)) {
SetLastWSAError(X_WSAError::X_WSA_INVALID_PARAMETER);
return -1;
}
// On win32 we could pipe all this directly to WSARecvFrom.
// We would however need find a way to call the completion callback without
// relying on the caller to set the "alertable" flag to true when waiting. We
// also need to do our own async handling anyway for Linux so we might as well
// make the code paths the same to improve symmetry in behaviour.
WSARecvFromData receive_async_data;
receive_async_data.buffers = buffers;
receive_async_data.num_buffers = num_buffers;
receive_async_data.flags = *flags_ptr;
receive_async_data.from = from_ptr;
receive_async_data.from_len = fromlen_ptr;
XWSAOVERLAPPED tmp_overlapped;
std::memset(&tmp_overlapped, 0, sizeof(tmp_overlapped));
receive_async_data.overlapped =
overlapped_ptr ? overlapped_ptr : &tmp_overlapped;
int ret = PollWSARecvFrom(false, receive_async_data);
if (ret < 0) {
auto wsa_error = receive_async_data.overlapped->internal_high.get();
SetLastWSAError((X_WSAError)wsa_error);
if (overlapped_ptr && wsa_error == (uint32_t)X_WSAError::X_WSAEWOULDBLOCK) {
receive_mutex_.lock();
if (!active_overlapped_ || active_overlapped_->offset_high & 1) {
// These may have been on the stack - copy them.
receive_async_data.buffers = new XWSABUF[num_buffers];
std::memcpy(receive_async_data.buffers, buffers,
num_buffers * sizeof(XWSABUF));
overlapped_ptr->offset_high = 0;
if (overlapped_ptr->event_handle) {
xboxkrnl::xeNtClearEvent(overlapped_ptr->event_handle);
}
active_overlapped_ = overlapped_ptr;
if (!polling_task_.valid()) {
polling_task_ =
std::async(std::launch::async, &XSocket::PollWSARecvFrom, this,
true, receive_async_data);
} else {
auto status = polling_task_.wait_for(0ms);
if (status == std::future_status::ready) {
auto result = polling_task_.get();
}
}
SetLastWSAError(X_WSAError::X_WSA_IO_PENDING);
}
receive_mutex_.unlock();
}
} else {
if (num_bytes_recv_ptr) {
*num_bytes_recv_ptr = receive_async_data.overlapped->internal;
}
*flags_ptr = receive_async_data.overlapped->offset;
}
return ret;
}
bool XSocket::WSAGetOverlappedResult(XWSAOVERLAPPED* overlapped_ptr,
xe::be<uint32_t>* bytes_transferred,
bool wait, xe::be<uint32_t>* flags_ptr) {
if (!overlapped_ptr || !bytes_transferred || !flags_ptr) {
SetLastWSAError(X_WSAError::X_WSA_INVALID_PARAMETER);
return false;
}
std::unique_lock lock(receive_mutex_);
if (!(overlapped_ptr->offset_high & 1)) {
if (wait) {
receive_cv_.wait(lock);
} else {
SetLastWSAError(X_WSAError::X_WSA_IO_INCOMPLETE);
return false;
}
}
if (overlapped_ptr->internal_high != 0) {
SetLastWSAError((X_WSAError)overlapped_ptr->internal_high.get());
active_overlapped_ = nullptr;
return false;
}
*bytes_transferred = overlapped_ptr->internal;
*flags_ptr = overlapped_ptr->offset;
active_overlapped_ = nullptr;
return true;
}
int XSocket::Send(const uint8_t* buf, uint32_t buf_len, uint32_t flags) {
return send(native_handle_, reinterpret_cast<const char*>(buf), buf_len,
flags);
}
int XSocket::SendTo(uint8_t* buf, uint32_t buf_len, uint32_t flags,
XSOCKADDR_IN* to, uint32_t to_len) {
return sendto(native_handle_, reinterpret_cast<char*>(buf), buf_len, flags,
to ? &to->to_host() : nullptr, to_len);
}
bool XSocket::QueuePacket(uint32_t src_ip, uint16_t src_port,
const uint8_t* buf, size_t len) {
packet* pkt = reinterpret_cast<packet*>(new uint8_t[sizeof(packet) + len]);
pkt->src_ip = src_ip;
pkt->src_port = src_port;
pkt->data_len = (uint16_t)len;
std::memcpy(pkt->data, buf, len);
std::lock_guard<std::mutex> lock(incoming_packet_mutex_);
incoming_packets_.push((uint8_t*)pkt);
// TODO: Limit on number of incoming packets?
return true;
}
X_STATUS XSocket::GetPeerName(XSOCKADDR_IN* buf, int* buf_len) {
sockaddr* sa = const_cast<sockaddr*>(&buf->to_host());
int ret = getpeername(native_handle_, sa, (socklen_t*)buf_len);
if (ret < 0) {
return X_STATUS_UNSUCCESSFUL;
}
buf->to_guest(sa);
return X_STATUS_SUCCESS;
}
X_STATUS XSocket::GetSockName(XSOCKADDR_IN* buf, int* buf_len) {
sockaddr* sa = const_cast<sockaddr*>(&buf->to_host());
int ret = getsockname(native_handle_, sa, (socklen_t*)buf_len);
if (ret < 0) {
return X_STATUS_UNSUCCESSFUL;
}
buf->to_guest(sa);
return X_STATUS_SUCCESS;
}
uint32_t XSocket::GetLastWSAError() const {
// Todo(Gliniak): Provide error mapping table
// Xbox error codes might not match with what we receive from OS
#ifdef XE_PLATFORM_WIN32
return WSAGetLastError();
#endif
return errno;
}
void XSocket::SetLastWSAError(X_WSAError error) const {
#ifdef XE_PLATFORM_WIN32
WSASetLastError((int)error);
#endif
errno = (int)error;
}
} // namespace kernel
} // namespace xe