1 files changed, 169 insertions, 0 deletions
diff --git a/netwerk/protocol/ftp/nsFtpControlConnection.cpp b/netwerk/protocol/ftp/nsFtpControlConnection.cpp
new file mode 100644
index 0000000000..1d54ed9de2
--- /dev/null
+++ b/netwerk/protocol/ftp/nsFtpControlConnection.cpp
@@ -0,0 +1,169 @@
+/* -*- 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 "nsIOService.h"
+#include "nsFtpControlConnection.h"
+#include "nsFtpProtocolHandler.h"
+#include "mozilla/Logging.h"
+#include "nsIInputStream.h"
+#include "nsISocketTransportService.h"
+#include "nsISocketTransport.h"
+#include "nsThreadUtils.h"
+#include "nsNetCID.h"
+#include "nsTArray.h"
+#include <algorithm>
+
+using namespace mozilla;
+using namespace mozilla::net;
+
+extern LazyLogModule gFTPLog;
+#define LOG(args) MOZ_LOG(gFTPLog, mozilla::LogLevel::Debug, args)
+#define LOG_INFO(args) MOZ_LOG(gFTPLog, mozilla::LogLevel::Info, args)
+
+//
+// nsFtpControlConnection implementation ...
+//
+
+NS_IMPL_ISUPPORTS(nsFtpControlConnection, nsIInputStreamCallback)
+
+NS_IMETHODIMP
+nsFtpControlConnection::OnInputStreamReady(nsIAsyncInputStream* stream) {
+  char data[4096];
+
+  // Consume data whether we have a listener or not.
+  uint64_t avail64;
+  uint32_t avail = 0;
+  nsresult rv = stream->Available(&avail64);
+  if (NS_SUCCEEDED(rv)) {
+    avail = (uint32_t)std::min(avail64, (uint64_t)sizeof(data));
+
+    uint32_t n;
+    rv = stream->Read(data, avail, &n);
+    if (NS_SUCCEEDED(rv)) avail = n;
+  }
+
+  // It's important that we null out mListener before calling one of its
+  // methods as it may call WaitData, which would queue up another read.
+
+  RefPtr<nsFtpControlConnectionListener> listener;
+  listener.swap(mListener);
+
+  if (!listener) return NS_OK;
+
+  if (NS_FAILED(rv)) {
+    listener->OnControlError(rv);
+  } else {
+    listener->OnControlDataAvailable(data, avail);
+  }
+
+  return NS_OK;
+}
+
+nsFtpControlConnection::nsFtpControlConnection(const nsACString& host,
+                                               uint32_t port)
+    : mServerType(0),
+      mSuspendedWrite(0),
+      mSessionId(gFtpHandler->GetSessionId()),
+      mUseUTF8(false),
+      mHost(host),
+      mPort(port) {
+  LOG_INFO(("FTP:CC created @%p", this));
+}
+
+nsFtpControlConnection::~nsFtpControlConnection() {
+  LOG_INFO(("FTP:CC destroyed @%p", this));
+}
+
+bool nsFtpControlConnection::IsAlive() {
+  if (!mSocket) return false;
+
+  bool isAlive = false;
+  mSocket->IsAlive(&isAlive);
+  return isAlive;
+}
+nsresult nsFtpControlConnection::Connect(nsIProxyInfo* proxyInfo,
+                                         nsITransportEventSink* eventSink) {
+  if (mSocket) return NS_OK;
+
+  // build our own
+  nsresult rv;
+  nsCOMPtr<nsISocketTransportService> sts =
+      do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
+  if (NS_FAILED(rv)) return rv;
+
+  rv = sts->CreateTransport(nsTArray<nsCString>(), mHost, mPort, proxyInfo,
+                            getter_AddRefs(mSocket));  // the command transport
+  if (NS_FAILED(rv)) return rv;
+
+  mSocket->SetQoSBits(gFtpHandler->GetControlQoSBits());
+
+  // proxy transport events back to current thread
+  if (eventSink) mSocket->SetEventSink(eventSink, GetCurrentEventTarget());
+
+  // open buffered, blocking output stream to socket.  so long as commands
+  // do not exceed 1024 bytes in length, the writing thread (the main thread)
+  // will not block.  this should be OK.
+  rv = mSocket->OpenOutputStream(nsITransport::OPEN_BLOCKING, 1024, 1,
+                                 getter_AddRefs(mSocketOutput));
+  if (NS_FAILED(rv)) return rv;
+
+  // open buffered, non-blocking/asynchronous input stream to socket.
+  nsCOMPtr<nsIInputStream> inStream;
+  rv = mSocket->OpenInputStream(0, nsIOService::gDefaultSegmentSize,
+                                nsIOService::gDefaultSegmentCount,
+                                getter_AddRefs(inStream));
+  if (NS_SUCCEEDED(rv)) mSocketInput = do_QueryInterface(inStream);
+
+  return rv;
+}
+
+nsresult nsFtpControlConnection::WaitData(
+    nsFtpControlConnectionListener* listener) {
+  LOG(("FTP:(%p) wait data [listener=%p]\n", this, listener));
+
+  // If listener is null, then simply disconnect the listener.  Otherwise,
+  // ensure that we are listening.
+  if (!listener) {
+    mListener = nullptr;
+    return NS_OK;
+  }
+
+  NS_ENSURE_STATE(mSocketInput);
+
+  mListener = listener;
+  return mSocketInput->AsyncWait(this, 0, 0, GetCurrentEventTarget());
+}
+
+nsresult nsFtpControlConnection::Disconnect(nsresult status) {
+  if (!mSocket) return NS_OK;  // already disconnected
+
+  LOG_INFO(("FTP:(%p) CC disconnecting (%" PRIx32 ")", this,
+            static_cast<uint32_t>(status)));
+
+  if (NS_FAILED(status)) {
+    // break cyclic reference!
+    mSocket->Close(status);
+    mSocket = nullptr;
+    mSocketInput->AsyncWait(nullptr, 0, 0, nullptr);  // clear any observer
+    mSocketInput = nullptr;
+    mSocketOutput = nullptr;
+  }
+
+  return NS_OK;
+}
+
+nsresult nsFtpControlConnection::Write(const nsACString& command) {
+  NS_ENSURE_STATE(mSocketOutput);
+
+  uint32_t len = command.Length();
+  uint32_t cnt;
+  nsresult rv = mSocketOutput->Write(command.Data(), len, &cnt);
+
+  if (NS_FAILED(rv)) return rv;
+
+  if (len != cnt) return NS_ERROR_FAILURE;
+
+  return NS_OK;
+}