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gecko-dev/netwerk/protocol/ftp/FTPChannelChild.cpp

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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/net/NeckoChild.h"
#include "mozilla/net/FTPChannelChild.h"
#include "mozilla/dom/TabChild.h"
#include "nsFtpProtocolHandler.h"
#include "nsITabChild.h"
#include "nsStringStream.h"
#include "nsMimeTypes.h"
#include "nsNetUtil.h"
#include "nsIURIFixup.h"
#include "nsILoadContext.h"
#include "nsCDefaultURIFixup.h"
#include "base/compiler_specific.h"
#include "mozilla/ipc/InputStreamUtils.h"
#include "mozilla/ipc/URIUtils.h"
using namespace mozilla::ipc;
#undef LOG
#define LOG(args) PR_LOG(gFTPLog, PR_LOG_DEBUG, args)
namespace mozilla {
namespace net {
FTPChannelChild::FTPChannelChild(nsIURI* uri)
: mIPCOpen(false)
, ALLOW_THIS_IN_INITIALIZER_LIST(mEventQ(static_cast<nsIFTPChannel*>(this)))
, mCanceled(false)
, mSuspendCount(0)
, mIsPending(false)
, mWasOpened(false)
, mLastModifiedTime(0)
, mStartPos(0)
{
LOG(("Creating FTPChannelChild @%x\n", this));
// grab a reference to the handler to ensure that it doesn't go away.
NS_ADDREF(gFtpHandler);
SetURI(uri);
}
FTPChannelChild::~FTPChannelChild()
{
LOG(("Destroying FTPChannelChild @%x\n", this));
gFtpHandler->Release();
}
void
FTPChannelChild::AddIPDLReference()
{
NS_ABORT_IF_FALSE(!mIPCOpen, "Attempt to retain more than one IPDL reference");
mIPCOpen = true;
AddRef();
}
void
FTPChannelChild::ReleaseIPDLReference()
{
NS_ABORT_IF_FALSE(mIPCOpen, "Attempt to release nonexistent IPDL reference");
mIPCOpen = false;
Release();
}
//-----------------------------------------------------------------------------
// FTPChannelChild::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS_INHERITED5(FTPChannelChild,
nsBaseChannel,
nsIFTPChannel,
nsIUploadChannel,
nsIResumableChannel,
nsIProxiedChannel,
nsIChildChannel)
//-----------------------------------------------------------------------------
NS_IMETHODIMP
FTPChannelChild::GetLastModifiedTime(PRTime* lastModifiedTime)
{
*lastModifiedTime = mLastModifiedTime;
return NS_OK;
}
NS_IMETHODIMP
FTPChannelChild::SetLastModifiedTime(PRTime lastModifiedTime)
{
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
FTPChannelChild::ResumeAt(uint64_t aStartPos, const nsACString& aEntityID)
{
NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS);
mStartPos = aStartPos;
mEntityID = aEntityID;
return NS_OK;
}
NS_IMETHODIMP
FTPChannelChild::GetEntityID(nsACString& entityID)
{
entityID = mEntityID;
return NS_OK;
}
NS_IMETHODIMP
FTPChannelChild::GetProxyInfo(nsIProxyInfo** aProxyInfo)
{
DROP_DEAD();
}
NS_IMETHODIMP
FTPChannelChild::SetUploadStream(nsIInputStream* stream,
const nsACString& contentType,
int64_t contentLength)
{
NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS);
mUploadStream = stream;
// NOTE: contentLength is intentionally ignored here.
return NS_OK;
}
NS_IMETHODIMP
FTPChannelChild::GetUploadStream(nsIInputStream** stream)
{
NS_ENSURE_ARG_POINTER(stream);
*stream = mUploadStream;
NS_IF_ADDREF(*stream);
return NS_OK;
}
//-----------------------------------------------------------------------------
NS_IMETHODIMP
FTPChannelChild::AsyncOpen(::nsIStreamListener* listener, nsISupports* aContext)
{
LOG(("FTPChannelChild::AsyncOpen [this=%x]\n", this));
NS_ENSURE_TRUE((gNeckoChild), NS_ERROR_FAILURE);
NS_ENSURE_ARG_POINTER(listener);
NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS);
NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
// Port checked in parent, but duplicate here so we can return with error
// immediately, as we've done since before e10s.
nsresult rv;
rv = NS_CheckPortSafety(nsBaseChannel::URI()); // Need to disambiguate,
// because in the child ipdl,
// a typedef URI is defined...
if (NS_FAILED(rv))
return rv;
mozilla::dom::TabChild* tabChild = nullptr;
nsCOMPtr<nsITabChild> iTabChild;
NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup,
NS_GET_IID(nsITabChild),
getter_AddRefs(iTabChild));
GetCallback(iTabChild);
if (iTabChild) {
tabChild = static_cast<mozilla::dom::TabChild*>(iTabChild.get());
}
if (MissingRequiredTabChild(tabChild, "ftp")) {
return NS_ERROR_ILLEGAL_VALUE;
}
// FIXME: like bug 558623, merge constructor+SendAsyncOpen into 1 IPC msg
gNeckoChild->SendPFTPChannelConstructor(this, tabChild, IPC::SerializedLoadContext(this));
mListener = listener;
mListenerContext = aContext;
// add ourselves to the load group.
if (mLoadGroup)
mLoadGroup->AddRequest(this, nullptr);
URIParams uri;
SerializeURI(nsBaseChannel::URI(), uri);
OptionalInputStreamParams uploadStream;
SerializeInputStream(mUploadStream, uploadStream);
SendAsyncOpen(uri, mStartPos, mEntityID, uploadStream);
// The socket transport layer in the chrome process now has a logical ref to
// us until OnStopRequest is called.
AddIPDLReference();
mIsPending = true;
mWasOpened = true;
return rv;
}
NS_IMETHODIMP
FTPChannelChild::IsPending(bool* result)
{
*result = mIsPending;
return NS_OK;
}
nsresult
FTPChannelChild::OpenContentStream(bool async,
nsIInputStream** stream,
nsIChannel** channel)
{
NS_RUNTIMEABORT("FTPChannel*Child* should never have OpenContentStream called!");
return NS_OK;
}
//-----------------------------------------------------------------------------
// FTPChannelChild::PFTPChannelChild
//-----------------------------------------------------------------------------
class FTPStartRequestEvent : public ChannelEvent
{
public:
FTPStartRequestEvent(FTPChannelChild* aChild, const int64_t& aContentLength,
const nsCString& aContentType, const PRTime& aLastModified,
const nsCString& aEntityID, const URIParams& aURI)
: mChild(aChild), mContentLength(aContentLength), mContentType(aContentType),
mLastModified(aLastModified), mEntityID(aEntityID), mURI(aURI) {}
void Run() { mChild->DoOnStartRequest(mContentLength, mContentType,
mLastModified, mEntityID, mURI); }
private:
FTPChannelChild* mChild;
int64_t mContentLength;
nsCString mContentType;
PRTime mLastModified;
nsCString mEntityID;
URIParams mURI;
};
bool
FTPChannelChild::RecvOnStartRequest(const int64_t& aContentLength,
const nsCString& aContentType,
const PRTime& aLastModified,
const nsCString& aEntityID,
const URIParams& aURI)
{
if (mEventQ.ShouldEnqueue()) {
mEventQ.Enqueue(new FTPStartRequestEvent(this, aContentLength, aContentType,
aLastModified, aEntityID, aURI));
} else {
DoOnStartRequest(aContentLength, aContentType, aLastModified,
aEntityID, aURI);
}
return true;
}
void
FTPChannelChild::DoOnStartRequest(const int64_t& aContentLength,
const nsCString& aContentType,
const PRTime& aLastModified,
const nsCString& aEntityID,
const URIParams& aURI)
{
LOG(("FTPChannelChild::RecvOnStartRequest [this=%x]\n", this));
mContentLength = aContentLength;
SetContentType(aContentType);
mLastModifiedTime = aLastModified;
mEntityID = aEntityID;
nsCString spec;
nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
uri->GetSpec(spec);
nsBaseChannel::URI()->SetSpec(spec);
AutoEventEnqueuer ensureSerialDispatch(mEventQ);
nsresult rv = mListener->OnStartRequest(this, mListenerContext);
if (NS_FAILED(rv))
Cancel(rv);
}
class FTPDataAvailableEvent : public ChannelEvent
{
public:
FTPDataAvailableEvent(FTPChannelChild* aChild, const nsCString& aData,
const uint64_t& aOffset, const uint32_t& aCount)
: mChild(aChild), mData(aData), mOffset(aOffset), mCount(aCount) {}
void Run() { mChild->DoOnDataAvailable(mData, mOffset, mCount); }
private:
FTPChannelChild* mChild;
nsCString mData;
uint64_t mOffset;
uint32_t mCount;
};
bool
FTPChannelChild::RecvOnDataAvailable(const nsCString& data,
const uint64_t& offset,
const uint32_t& count)
{
if (mEventQ.ShouldEnqueue()) {
mEventQ.Enqueue(new FTPDataAvailableEvent(this, data, offset, count));
} else {
DoOnDataAvailable(data, offset, count);
}
return true;
}
void
FTPChannelChild::DoOnDataAvailable(const nsCString& data,
const uint64_t& offset,
const uint32_t& count)
{
LOG(("FTPChannelChild::RecvOnDataAvailable [this=%x]\n", this));
if (mCanceled)
return;
// NOTE: the OnDataAvailable contract requires the client to read all the data
// in the inputstream. This code relies on that ('data' will go away after
// this function). Apparently the previous, non-e10s behavior was to actually
// support only reading part of the data, allowing later calls to read the
// rest.
nsCOMPtr<nsIInputStream> stringStream;
nsresult rv = NS_NewByteInputStream(getter_AddRefs(stringStream),
data.get(),
count,
NS_ASSIGNMENT_DEPEND);
if (NS_FAILED(rv)) {
Cancel(rv);
return;
}
AutoEventEnqueuer ensureSerialDispatch(mEventQ);
rv = mListener->OnDataAvailable(this, mListenerContext,
stringStream, offset, count);
if (NS_FAILED(rv))
Cancel(rv);
stringStream->Close();
}
class FTPStopRequestEvent : public ChannelEvent
{
public:
FTPStopRequestEvent(FTPChannelChild* aChild, const nsresult& aStatusCode)
: mChild(aChild), mStatusCode(aStatusCode) {}
void Run() { mChild->DoOnStopRequest(mStatusCode); }
private:
FTPChannelChild* mChild;
nsresult mStatusCode;
};
bool
FTPChannelChild::RecvOnStopRequest(const nsresult& statusCode)
{
if (mEventQ.ShouldEnqueue()) {
mEventQ.Enqueue(new FTPStopRequestEvent(this, statusCode));
} else {
DoOnStopRequest(statusCode);
}
return true;
}
void
FTPChannelChild::DoOnStopRequest(const nsresult& statusCode)
{
LOG(("FTPChannelChild::RecvOnStopRequest [this=%x status=%u]\n",
this, statusCode));
if (!mCanceled)
mStatus = statusCode;
{ // Ensure that all queued ipdl events are dispatched before
// we initiate protocol deletion below.
mIsPending = false;
AutoEventEnqueuer ensureSerialDispatch(mEventQ);
(void)mListener->OnStopRequest(this, mListenerContext, statusCode);
mListener = nullptr;
mListenerContext = nullptr;
if (mLoadGroup)
mLoadGroup->RemoveRequest(this, nullptr, statusCode);
}
// This calls NeckoChild::DeallocPFTPChannel(), which deletes |this| if IPDL
// holds the last reference. Don't rely on |this| existing after here!
Send__delete__(this);
}
class FTPFailedAsyncOpenEvent : public ChannelEvent
{
public:
FTPFailedAsyncOpenEvent(FTPChannelChild* aChild, nsresult aStatus)
: mChild(aChild), mStatus(aStatus) {}
void Run() { mChild->DoFailedAsyncOpen(mStatus); }
private:
FTPChannelChild* mChild;
nsresult mStatus;
};
bool
FTPChannelChild::RecvFailedAsyncOpen(const nsresult& statusCode)
{
if (mEventQ.ShouldEnqueue()) {
mEventQ.Enqueue(new FTPFailedAsyncOpenEvent(this, statusCode));
} else {
DoFailedAsyncOpen(statusCode);
}
return true;
}
void
FTPChannelChild::DoFailedAsyncOpen(const nsresult& statusCode)
{
mStatus = statusCode;
if (mLoadGroup)
mLoadGroup->RemoveRequest(this, nullptr, statusCode);
if (mListener) {
mListener->OnStartRequest(this, mListenerContext);
mIsPending = false;
mListener->OnStopRequest(this, mListenerContext, statusCode);
} else {
mIsPending = false;
}
mListener = nullptr;
mListenerContext = nullptr;
if (mIPCOpen)
Send__delete__(this);
}
class FTPDeleteSelfEvent : public ChannelEvent
{
public:
FTPDeleteSelfEvent(FTPChannelChild* aChild)
: mChild(aChild) {}
void Run() { mChild->DoDeleteSelf(); }
private:
FTPChannelChild* mChild;
};
bool
FTPChannelChild::RecvDeleteSelf()
{
if (mEventQ.ShouldEnqueue()) {
mEventQ.Enqueue(new FTPDeleteSelfEvent(this));
} else {
DoDeleteSelf();
}
return true;
}
void
FTPChannelChild::DoDeleteSelf()
{
if (mIPCOpen)
Send__delete__(this);
}
NS_IMETHODIMP
FTPChannelChild::Cancel(nsresult status)
{
if (mCanceled)
return NS_OK;
mCanceled = true;
mStatus = status;
if (mIPCOpen)
SendCancel(status);
return NS_OK;
}
NS_IMETHODIMP
FTPChannelChild::Suspend()
{
NS_ENSURE_TRUE(mIPCOpen, NS_ERROR_NOT_AVAILABLE);
if (!mSuspendCount++) {
SendSuspend();
mEventQ.Suspend();
}
return NS_OK;
}
nsresult
FTPChannelChild::AsyncCall(void (FTPChannelChild::*funcPtr)(),
nsRunnableMethod<FTPChannelChild> **retval)
{
nsresult rv;
nsRefPtr<nsRunnableMethod<FTPChannelChild> > event = NS_NewRunnableMethod(this, funcPtr);
rv = NS_DispatchToCurrentThread(event);
if (NS_SUCCEEDED(rv) && retval) {
*retval = event;
}
return rv;
}
void
FTPChannelChild::CompleteResume()
{
mEventQ.Resume();
}
NS_IMETHODIMP
FTPChannelChild::Resume()
{
NS_ENSURE_TRUE(mIPCOpen, NS_ERROR_NOT_AVAILABLE);
if (!--mSuspendCount) {
SendResume();
AsyncCall(&FTPChannelChild::CompleteResume);
}
return NS_OK;
}
//-----------------------------------------------------------------------------
// FTPChannelChild::nsIChildChannel
//-----------------------------------------------------------------------------
NS_IMETHODIMP
FTPChannelChild::ConnectParent(uint32_t id)
{
mozilla::dom::TabChild* tabChild = nullptr;
nsCOMPtr<nsITabChild> iTabChild;
NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup,
NS_GET_IID(nsITabChild),
getter_AddRefs(iTabChild));
GetCallback(iTabChild);
if (iTabChild) {
tabChild = static_cast<mozilla::dom::TabChild*>(iTabChild.get());
}
// The socket transport in the chrome process now holds a logical ref to us
// until OnStopRequest, or we do a redirect, or we hit an IPDL error.
AddIPDLReference();
if (!gNeckoChild->SendPFTPChannelConstructor(this, tabChild,
IPC::SerializedLoadContext(this)))
return NS_ERROR_FAILURE;
if (!SendConnectChannel(id))
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
FTPChannelChild::CompleteRedirectSetup(nsIStreamListener *listener,
nsISupports *aContext)
{
LOG(("FTPChannelChild::CompleteRedirectSetup [this=%x]\n", this));
NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS);
NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
mIsPending = true;
mWasOpened = true;
mListener = listener;
mListenerContext = aContext;
// add ourselves to the load group.
if (mLoadGroup)
mLoadGroup->AddRequest(this, nullptr);
// We already have an open IPDL connection to the parent. If on-modify-request
// listeners or load group observers canceled us, let the parent handle it
// and send it back to us naturally.
return NS_OK;
}
} // namespace net
} // namespace mozilla
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