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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/Assertions.h"
#include "ShutdownLayer.h"
#include "prerror.h"
#include "private/pprio.h"
#include "prmem.h"
#include <winsock2.h>
static PRDescIdentity sWinSockShutdownLayerIdentity;
static PRIOMethods sWinSockShutdownLayerMethods;
static PRIOMethods* sWinSockShutdownLayerMethodsPtr = nullptr;
namespace mozilla {
namespace net {
extern PRDescIdentity nsNamedPipeLayerIdentity;
} // namespace net
} // namespace mozilla
PRStatus WinSockClose(PRFileDesc* aFd) {
MOZ_RELEASE_ASSERT(aFd->identity == sWinSockShutdownLayerIdentity,
"Windows shutdown layer not on the top of the stack");
PROsfd osfd = PR_FileDesc2NativeHandle(aFd);
if (osfd != -1) {
shutdown(osfd, SD_BOTH);
}
aFd->identity = PR_INVALID_IO_LAYER;
if (aFd->lower) {
return aFd->lower->methods->close(aFd->lower);
} else {
return PR_SUCCESS;
}
}
nsresult mozilla::net::AttachShutdownLayer(PRFileDesc* aFd) {
if (!sWinSockShutdownLayerMethodsPtr) {
sWinSockShutdownLayerIdentity =
PR_GetUniqueIdentity("windows shutdown call layer");
sWinSockShutdownLayerMethods = *PR_GetDefaultIOMethods();
sWinSockShutdownLayerMethods.close = WinSockClose;
sWinSockShutdownLayerMethodsPtr = &sWinSockShutdownLayerMethods;
}
if (mozilla::net::nsNamedPipeLayerIdentity &&
PR_GetIdentitiesLayer(aFd, mozilla::net::nsNamedPipeLayerIdentity)) {
// Do not attach shutdown layer on named pipe layer,
// it is for PR_NSPR_IO_LAYER only.
return NS_OK;
}
PRFileDesc* layer;
PRStatus status;
layer = PR_CreateIOLayerStub(sWinSockShutdownLayerIdentity,
sWinSockShutdownLayerMethodsPtr);
if (!layer) {
return NS_OK;
}
status = PR_PushIOLayer(aFd, PR_NSPR_IO_LAYER, layer);
if (status == PR_FAILURE) {
PR_Free(layer); // PR_CreateIOLayerStub() uses PR_Malloc().
return NS_ERROR_FAILURE;
}
return NS_OK;
}