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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et tw=80 : */
/* 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
#include "nsIInterfaceRequestor.h"
#include "WebSocketConnection.h"
#include "WebSocketLog.h"
#include "mozilla/net/WebSocketConnectionListener.h"
#include "mozilla/Components.h"
#include "nsIOService.h"
#include "nsITLSSocketControl.h"
#include "nsISocketTransport.h"
#include "nsITransportSecurityInfo.h"
#include "nsSocketTransportService2.h"
namespace mozilla::net {
NS_IMPL_ISUPPORTS(WebSocketConnection, nsIInputStreamCallback,
nsIOutputStreamCallback)
WebSocketConnection::WebSocketConnection(nsISocketTransport* aTransport,
nsIAsyncInputStream* aInputStream,
nsIAsyncOutputStream* aOutputStream)
: mTransport(aTransport),
mSocketIn(aInputStream),
mSocketOut(aOutputStream) {
LOG(("WebSocketConnection ctor %p\n", this));
}
WebSocketConnection::~WebSocketConnection() {
LOG(("WebSocketConnection dtor %p\n", this));
}
nsresult WebSocketConnection::Init(WebSocketConnectionListener* aListener) {
NS_ENSURE_ARG_POINTER(aListener);
mListener = aListener;
nsresult rv;
mSocketThread = mozilla::components::SocketTransport::Service(&rv);
if (NS_FAILED(rv)) {
return rv;
}
if (!mTransport) {
return NS_ERROR_FAILURE;
}
if (XRE_IsParentProcess()) {
nsCOMPtr<nsIInterfaceRequestor> callbacks = do_QueryInterface(mListener);
mTransport->SetSecurityCallbacks(callbacks);
} else {
// NOTE: we don't use security callbacks in socket process.
mTransport->SetSecurityCallbacks(nullptr);
}
return mTransport->SetEventSink(nullptr, nullptr);
}
void WebSocketConnection::GetIoTarget(nsIEventTarget** aTarget) {
nsCOMPtr<nsIEventTarget> target = mSocketThread;
return target.forget(aTarget);
}
void WebSocketConnection::Close() {
LOG(("WebSocketConnection::Close %p\n", this));
MOZ_ASSERT(OnSocketThread());
if (mTransport) {
mTransport->SetSecurityCallbacks(nullptr);
mTransport->SetEventSink(nullptr, nullptr);
mTransport->Close(NS_BASE_STREAM_CLOSED);
mTransport = nullptr;
}
if (mSocketIn) {
if (mStartReadingCalled) {
mSocketIn->AsyncWait(nullptr, 0, 0, nullptr);
}
mSocketIn = nullptr;
}
if (mSocketOut) {
mSocketOut->AsyncWait(nullptr, 0, 0, nullptr);
mSocketOut = nullptr;
}
}
nsresult WebSocketConnection::WriteOutputData(nsTArray<uint8_t>&& aData) {
MOZ_ASSERT(OnSocketThread());
if (!mSocketOut) {
return NS_ERROR_NOT_AVAILABLE;
}
mOutputQueue.emplace_back(std::move(aData));
return OnOutputStreamReady(mSocketOut);
}
nsresult WebSocketConnection::WriteOutputData(const uint8_t* aHdrBuf,
uint32_t aHdrBufLength,
const uint8_t* aPayloadBuf,
uint32_t aPayloadBufLength) {
MOZ_ASSERT_UNREACHABLE("Should not be called");
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult WebSocketConnection::StartReading() {
MOZ_ASSERT(OnSocketThread());
if (!mSocketIn) {
return NS_ERROR_NOT_AVAILABLE;
}
MOZ_ASSERT(!mStartReadingCalled, "StartReading twice");
mStartReadingCalled = true;
return mSocketIn->AsyncWait(this, 0, 0, mSocketThread);
}
void WebSocketConnection::DrainSocketData() {
MOZ_ASSERT(OnSocketThread());
if (!mSocketIn || !mListener) {
return;
}
// If we leave any data unconsumed (including the tcp fin) a RST will be
// generated The right thing to do here is shutdown(SHUT_WR) and then wait a
// little while to see if any data comes in.. but there is no reason to delay
// things for that when the websocket handshake is supposed to guarantee a
// quiet connection except for that fin.
char buffer[512];
uint32_t count = 0;
uint32_t total = 0;
nsresult rv;
do {
total += count;
rv = mSocketIn->Read(buffer, 512, &count);
if (rv != NS_BASE_STREAM_WOULD_BLOCK && (NS_FAILED(rv) || count == 0)) {
mListener->OnTCPClosed();
}
} while (NS_SUCCEEDED(rv) && count > 0 && total < 32000);
}
nsresult WebSocketConnection::GetSecurityInfo(
nsITransportSecurityInfo** aSecurityInfo) {
LOG(("WebSocketConnection::GetSecurityInfo() %p\n", this));
MOZ_ASSERT(OnSocketThread());
*aSecurityInfo = nullptr;
if (mTransport) {
nsCOMPtr<nsITLSSocketControl> tlsSocketControl;
nsresult rv =
mTransport->GetTlsSocketControl(getter_AddRefs(tlsSocketControl));
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsITransportSecurityInfo> securityInfo(
do_QueryInterface(tlsSocketControl));
if (securityInfo) {
securityInfo.forget(aSecurityInfo);
}
}
return NS_OK;
}
NS_IMETHODIMP
WebSocketConnection::OnInputStreamReady(nsIAsyncInputStream* aStream) {
LOG(("WebSocketConnection::OnInputStreamReady() %p\n", this));
MOZ_ASSERT(OnSocketThread());
MOZ_ASSERT(mListener);
// did we we clean up the socket after scheduling InputReady?
if (!mSocketIn) {
return NS_OK;
}
// this is after the http upgrade - so we are speaking websockets
uint8_t buffer[2048];
uint32_t count;
nsresult rv;
do {
rv = mSocketIn->Read((char*)buffer, 2048, &count);
LOG(("WebSocketConnection::OnInputStreamReady: read %u rv %" PRIx32 "\n",
count, static_cast<uint32_t>(rv)));
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
mSocketIn->AsyncWait(this, 0, 0, mSocketThread);
return NS_OK;
}
if (NS_FAILED(rv)) {
mListener->OnError(rv);
return rv;
}
if (count == 0) {
mListener->OnError(NS_BASE_STREAM_CLOSED);
return NS_OK;
}
rv = mListener->OnDataReceived(buffer, count);
if (NS_FAILED(rv)) {
mListener->OnError(rv);
return rv;
}
} while (NS_SUCCEEDED(rv) && mSocketIn && mListener);
return NS_OK;
}
NS_IMETHODIMP
WebSocketConnection::OnOutputStreamReady(nsIAsyncOutputStream* aStream) {
LOG(("WebSocketConnection::OnOutputStreamReady() %p\n", this));
MOZ_ASSERT(OnSocketThread());
MOZ_ASSERT(mListener);
if (!mSocketOut) {
return NS_OK;
}
while (!mOutputQueue.empty()) {
const OutputData& data = mOutputQueue.front();
char* buffer = reinterpret_cast<char*>(
const_cast<uint8_t*>(data.GetData().Elements())) +
mWriteOffset;
uint32_t toWrite = data.GetData().Length() - mWriteOffset;
uint32_t wrote = 0;
nsresult rv = mSocketOut->Write(buffer, toWrite, &wrote);
LOG(("WebSocketConnection::OnOutputStreamReady: write %u rv %" PRIx32,
wrote, static_cast<uint32_t>(rv)));
if (rv == NS_BASE_STREAM_WOULD_BLOCK) {
mSocketOut->AsyncWait(this, 0, 0, mSocketThread);
return rv;
}
if (NS_FAILED(rv)) {
LOG(("WebSocketConnection::OnOutputStreamReady %p failed %u\n", this,
static_cast<uint32_t>(rv)));
mListener->OnError(rv);
return NS_OK;
}
mWriteOffset += wrote;
if (toWrite == wrote) {
mWriteOffset = 0;
mOutputQueue.pop_front();
} else {
mSocketOut->AsyncWait(this, 0, 0, mSocketThread);
}
}
return NS_OK;
}
} // namespace mozilla::net