mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-23 20:26:39 +00:00
1e7b32490d
This allows for building GoToSocial with [SQLite transpiled to WASM](https://github.com/ncruces/go-sqlite3) and accessed through [Wazero](https://wazero.io/).
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
//go:build windows
|
|
|
|
package sysfs
|
|
|
|
import (
|
|
"net"
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"github.com/tetratelabs/wazero/experimental/sys"
|
|
"github.com/tetratelabs/wazero/internal/fsapi"
|
|
socketapi "github.com/tetratelabs/wazero/internal/sock"
|
|
)
|
|
|
|
const (
|
|
// MSG_PEEK is the flag PEEK for syscall.Recvfrom on Windows.
|
|
// This constant is not exported on this platform.
|
|
MSG_PEEK = 0x2
|
|
// _FIONBIO is the flag to set the O_NONBLOCK flag on socket handles using ioctlsocket.
|
|
_FIONBIO = 0x8004667e
|
|
)
|
|
|
|
var (
|
|
// modws2_32 is WinSock.
|
|
modws2_32 = syscall.NewLazyDLL("ws2_32.dll")
|
|
// procrecvfrom exposes recvfrom from WinSock.
|
|
procrecvfrom = modws2_32.NewProc("recvfrom")
|
|
// procioctlsocket exposes ioctlsocket from WinSock.
|
|
procioctlsocket = modws2_32.NewProc("ioctlsocket")
|
|
)
|
|
|
|
func newTCPListenerFile(tl *net.TCPListener) socketapi.TCPSock {
|
|
return newDefaultTCPListenerFile(tl)
|
|
}
|
|
|
|
// recvfrom exposes the underlying syscall in Windows.
|
|
//
|
|
// Note: since we are only using this to expose MSG_PEEK,
|
|
// we do not need really need all the parameters that are actually
|
|
// allowed in WinSock.
|
|
// We ignore `from *sockaddr` and `fromlen *int`.
|
|
func recvfrom(s uintptr, buf []byte, flags int32) (n int, errno sys.Errno) {
|
|
var _p0 *byte
|
|
if len(buf) > 0 {
|
|
_p0 = &buf[0]
|
|
}
|
|
r0, _, e1 := syscall.SyscallN(
|
|
procrecvfrom.Addr(),
|
|
s,
|
|
uintptr(unsafe.Pointer(_p0)),
|
|
uintptr(len(buf)),
|
|
uintptr(flags),
|
|
0, // from *sockaddr (optional)
|
|
0) // fromlen *int (optional)
|
|
return int(r0), sys.UnwrapOSError(e1)
|
|
}
|
|
|
|
func setNonblockSocket(fd uintptr, enabled bool) sys.Errno {
|
|
opt := uint64(0)
|
|
if enabled {
|
|
opt = 1
|
|
}
|
|
// ioctlsocket(fd, FIONBIO, &opt)
|
|
_, _, errno := syscall.SyscallN(
|
|
procioctlsocket.Addr(),
|
|
uintptr(fd),
|
|
uintptr(_FIONBIO),
|
|
uintptr(unsafe.Pointer(&opt)))
|
|
return sys.UnwrapOSError(errno)
|
|
}
|
|
|
|
func _pollSock(conn syscall.Conn, flag fsapi.Pflag, timeoutMillis int32) (bool, sys.Errno) {
|
|
if flag != fsapi.POLLIN {
|
|
return false, sys.ENOTSUP
|
|
}
|
|
n, errno := syscallConnControl(conn, func(fd uintptr) (int, sys.Errno) {
|
|
return _poll([]pollFd{newPollFd(fd, _POLLIN, 0)}, timeoutMillis)
|
|
})
|
|
return n > 0, errno
|
|
}
|