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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package socktest
import (
"internal/syscall/windows"
"syscall"
)
// WSASocket wraps [syscall.WSASocket].
func (sw *Switch) WSASocket(family, sotype, proto int32, protinfo *syscall.WSAProtocolInfo, group uint32, flags uint32) (s syscall.Handle, err error) {
sw.once.Do(sw.init)
so := &Status{Cookie: cookie(int(family), int(sotype), int(proto))}
sw.fmu.RLock()
f, _ := sw.fltab[FilterSocket]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return syscall.InvalidHandle, err
}
s, so.Err = windows.WSASocket(family, sotype, proto, protinfo, group, flags)
if err = af.apply(so); err != nil {
if so.Err == nil {
syscall.Closesocket(s)
}
return syscall.InvalidHandle, err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).OpenFailed++
return syscall.InvalidHandle, so.Err
}
nso := sw.addLocked(s, int(family), int(sotype), int(proto))
sw.stats.getLocked(nso.Cookie).Opened++
return s, nil
}
// Closesocket wraps [syscall.Closesocket].
func (sw *Switch) Closesocket(s syscall.Handle) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Closesocket(s)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterClose]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.Closesocket(s)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).CloseFailed++
return so.Err
}
delete(sw.sotab, s)
sw.stats.getLocked(so.Cookie).Closed++
return nil
}
// Connect wraps [syscall.Connect].
func (sw *Switch) Connect(s syscall.Handle, sa syscall.Sockaddr) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Connect(s, sa)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterConnect]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.Connect(s, sa)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).ConnectFailed++
return so.Err
}
sw.stats.getLocked(so.Cookie).Connected++
return nil
}
// ConnectEx wraps [syscall.ConnectEx].
func (sw *Switch) ConnectEx(s syscall.Handle, sa syscall.Sockaddr, b *byte, n uint32, nwr *uint32, o *syscall.Overlapped) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.ConnectEx(s, sa, b, n, nwr, o)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterConnect]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.ConnectEx(s, sa, b, n, nwr, o)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).ConnectFailed++
return so.Err
}
sw.stats.getLocked(so.Cookie).Connected++
return nil
}
// Listen wraps [syscall.Listen].
func (sw *Switch) Listen(s syscall.Handle, backlog int) (err error) {
so := sw.sockso(s)
if so == nil {
return syscall.Listen(s, backlog)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterListen]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.Listen(s, backlog)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).ListenFailed++
return so.Err
}
sw.stats.getLocked(so.Cookie).Listened++
return nil
}
// AcceptEx wraps [syscall.AcceptEx].
func (sw *Switch) AcceptEx(ls syscall.Handle, as syscall.Handle, b *byte, rxdatalen uint32, laddrlen uint32, raddrlen uint32, rcvd *uint32, overlapped *syscall.Overlapped) error {
so := sw.sockso(ls)
if so == nil {
return syscall.AcceptEx(ls, as, b, rxdatalen, laddrlen, raddrlen, rcvd, overlapped)
}
sw.fmu.RLock()
f, _ := sw.fltab[FilterAccept]
sw.fmu.RUnlock()
af, err := f.apply(so)
if err != nil {
return err
}
so.Err = syscall.AcceptEx(ls, as, b, rxdatalen, laddrlen, raddrlen, rcvd, overlapped)
if err = af.apply(so); err != nil {
return err
}
sw.smu.Lock()
defer sw.smu.Unlock()
if so.Err != nil {
sw.stats.getLocked(so.Cookie).AcceptFailed++
return so.Err
}
nso := sw.addLocked(as, so.Cookie.Family(), so.Cookie.Type(), so.Cookie.Protocol())
sw.stats.getLocked(nso.Cookie).Accepted++
return nil
}