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gecko/netwerk/protocol/http/HttpChannelParent.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/. */
// HttpLog.h should generally be included first
#include "HttpLog.h"
#include "mozilla/dom/FileDescriptorSetParent.h"
#include "mozilla/net/HttpChannelParent.h"
#include "mozilla/dom/TabParent.h"
#include "mozilla/net/NeckoParent.h"
#include "mozilla/unused.h"
#include "HttpChannelParentListener.h"
#include "nsHttpHandler.h"
#include "nsNetUtil.h"
#include "nsISupportsPriority.h"
#include "nsIAuthPromptProvider.h"
#include "nsIScriptSecurityManager.h"
#include "nsSerializationHelper.h"
#include "nsISerializable.h"
#include "nsIAssociatedContentSecurity.h"
#include "nsIApplicationCacheService.h"
#include "mozilla/ipc/InputStreamUtils.h"
#include "mozilla/ipc/URIUtils.h"
#include "SerializedLoadContext.h"
using namespace mozilla::dom;
using namespace mozilla::ipc;
namespace mozilla {
namespace net {
HttpChannelParent::HttpChannelParent(PBrowserParent* iframeEmbedding,
nsILoadContext* aLoadContext,
PBOverrideStatus aOverrideStatus)
: mIPCClosed(false)
, mStoredStatus(NS_OK)
, mStoredProgress(0)
, mStoredProgressMax(0)
, mSentRedirect1Begin(false)
, mSentRedirect1BeginFailed(false)
, mReceivedRedirect2Verify(false)
, mPBOverride(aOverrideStatus)
, mLoadContext(aLoadContext)
, mStatus(NS_OK)
, mDivertingFromChild(false)
, mDivertedOnStartRequest(false)
, mSuspendedForDiversion(false)
{
// Ensure gHttpHandler is initialized: we need the atom table up and running.
nsCOMPtr<nsIHttpProtocolHandler> dummyInitializer =
do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "http");
MOZ_ASSERT(gHttpHandler);
mHttpHandler = gHttpHandler;
mTabParent = static_cast<mozilla::dom::TabParent*>(iframeEmbedding);
}
HttpChannelParent::~HttpChannelParent()
{
}
void
HttpChannelParent::ActorDestroy(ActorDestroyReason why)
{
// We may still have refcount>0 if nsHttpChannel hasn't called OnStopRequest
// yet, but child process has crashed. We must not try to send any more msgs
// to child, or IPDL will kill chrome process, too.
mIPCClosed = true;
}
bool
HttpChannelParent::Init(const HttpChannelCreationArgs& aArgs)
{
switch (aArgs.type()) {
case HttpChannelCreationArgs::THttpChannelOpenArgs:
{
const HttpChannelOpenArgs& a = aArgs.get_HttpChannelOpenArgs();
return DoAsyncOpen(a.uri(), a.original(), a.doc(), a.referrer(),
a.apiRedirectTo(), a.loadFlags(), a.requestHeaders(),
a.requestMethod(), a.uploadStream(),
a.uploadStreamHasHeaders(), a.priority(),
a.redirectionLimit(), a.allowPipelining(),
a.forceAllowThirdPartyCookie(), a.resumeAt(),
a.startPos(), a.entityID(), a.chooseApplicationCache(),
a.appCacheClientID(), a.allowSpdy(), a.fds());
}
case HttpChannelCreationArgs::THttpChannelConnectArgs:
{
const HttpChannelConnectArgs& cArgs = aArgs.get_HttpChannelConnectArgs();
return ConnectChannel(cArgs.channelId());
}
default:
NS_NOTREACHED("unknown open type");
return false;
}
}
//-----------------------------------------------------------------------------
// HttpChannelParent::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS6(HttpChannelParent,
nsIInterfaceRequestor,
nsIProgressEventSink,
nsIRequestObserver,
nsIStreamListener,
nsIParentChannel,
nsIParentRedirectingChannel)
//-----------------------------------------------------------------------------
// HttpChannelParent::nsIInterfaceRequestor
//-----------------------------------------------------------------------------
NS_IMETHODIMP
HttpChannelParent::GetInterface(const nsIID& aIID, void **result)
{
if (aIID.Equals(NS_GET_IID(nsIAuthPromptProvider)) ||
aIID.Equals(NS_GET_IID(nsISecureBrowserUI))) {
if (!mTabParent)
return NS_NOINTERFACE;
return mTabParent->QueryInterface(aIID, result);
}
// Only support nsILoadContext if child channel's callbacks did too
if (aIID.Equals(NS_GET_IID(nsILoadContext)) && mLoadContext) {
NS_ADDREF(mLoadContext);
*result = static_cast<nsILoadContext*>(mLoadContext);
return NS_OK;
}
return QueryInterface(aIID, result);
}
//-----------------------------------------------------------------------------
// HttpChannelParent::PHttpChannelParent
//-----------------------------------------------------------------------------
bool
HttpChannelParent::DoAsyncOpen( const URIParams& aURI,
const OptionalURIParams& aOriginalURI,
const OptionalURIParams& aDocURI,
const OptionalURIParams& aReferrerURI,
const OptionalURIParams& aAPIRedirectToURI,
const uint32_t& loadFlags,
const RequestHeaderTuples& requestHeaders,
const nsCString& requestMethod,
const OptionalInputStreamParams& uploadStream,
const bool& uploadStreamHasHeaders,
const uint16_t& priority,
const uint8_t& redirectionLimit,
const bool& allowPipelining,
const bool& forceAllowThirdPartyCookie,
const bool& doResumeAt,
const uint64_t& startPos,
const nsCString& entityID,
const bool& chooseApplicationCache,
const nsCString& appCacheClientID,
const bool& allowSpdy,
const OptionalFileDescriptorSet& aFds)
{
nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
if (!uri) {
// URIParams does MOZ_ASSERT if null, but we need to protect opt builds from
// null deref here.
return false;
}
nsCOMPtr<nsIURI> originalUri = DeserializeURI(aOriginalURI);
nsCOMPtr<nsIURI> docUri = DeserializeURI(aDocURI);
nsCOMPtr<nsIURI> referrerUri = DeserializeURI(aReferrerURI);
nsCOMPtr<nsIURI> apiRedirectToUri = DeserializeURI(aAPIRedirectToURI);
nsCString uriSpec;
uri->GetSpec(uriSpec);
LOG(("HttpChannelParent RecvAsyncOpen [this=%p uri=%s]\n",
this, uriSpec.get()));
nsresult rv;
nsCOMPtr<nsIIOService> ios(do_GetIOService(&rv));
if (NS_FAILED(rv))
return SendFailedAsyncOpen(rv);
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel), uri, ios, nullptr, nullptr, loadFlags);
if (NS_FAILED(rv))
return SendFailedAsyncOpen(rv);
mChannel = static_cast<nsHttpChannel *>(channel.get());
if (mPBOverride != kPBOverride_Unset) {
mChannel->SetPrivate(mPBOverride == kPBOverride_Private ? true : false);
}
if (doResumeAt)
mChannel->ResumeAt(startPos, entityID);
if (originalUri)
mChannel->SetOriginalURI(originalUri);
if (docUri)
mChannel->SetDocumentURI(docUri);
if (referrerUri)
mChannel->SetReferrerInternal(referrerUri);
if (apiRedirectToUri)
mChannel->RedirectTo(apiRedirectToUri);
if (loadFlags != nsIRequest::LOAD_NORMAL)
mChannel->SetLoadFlags(loadFlags);
for (uint32_t i = 0; i < requestHeaders.Length(); i++) {
mChannel->SetRequestHeader(requestHeaders[i].mHeader,
requestHeaders[i].mValue,
requestHeaders[i].mMerge);
}
mParentListener = new HttpChannelParentListener(this);
mChannel->SetNotificationCallbacks(mParentListener);
mChannel->SetRequestMethod(nsDependentCString(requestMethod.get()));
nsTArray<mozilla::ipc::FileDescriptor> fds;
if (aFds.type() == OptionalFileDescriptorSet::TPFileDescriptorSetParent) {
FileDescriptorSetParent* fdSetActor =
static_cast<FileDescriptorSetParent*>(aFds.get_PFileDescriptorSetParent());
MOZ_ASSERT(fdSetActor);
fdSetActor->ForgetFileDescriptors(fds);
MOZ_ASSERT(!fds.IsEmpty());
unused << fdSetActor->Send__delete__(fdSetActor);
}
nsCOMPtr<nsIInputStream> stream = DeserializeInputStream(uploadStream, fds);
if (stream) {
mChannel->InternalSetUploadStream(stream);
mChannel->SetUploadStreamHasHeaders(uploadStreamHasHeaders);
}
if (priority != nsISupportsPriority::PRIORITY_NORMAL)
mChannel->SetPriority(priority);
mChannel->SetRedirectionLimit(redirectionLimit);
mChannel->SetAllowPipelining(allowPipelining);
mChannel->SetForceAllowThirdPartyCookie(forceAllowThirdPartyCookie);
mChannel->SetAllowSpdy(allowSpdy);
nsCOMPtr<nsIApplicationCacheChannel> appCacheChan =
do_QueryObject(mChannel);
nsCOMPtr<nsIApplicationCacheService> appCacheService =
do_GetService(NS_APPLICATIONCACHESERVICE_CONTRACTID);
bool setChooseApplicationCache = chooseApplicationCache;
if (appCacheChan && appCacheService) {
// We might potentially want to drop this flag (that is TRUE by default)
// after we successfully associate the channel with an application cache
// reported by the channel child. Dropping it here may be too early.
appCacheChan->SetInheritApplicationCache(false);
if (!appCacheClientID.IsEmpty()) {
nsCOMPtr<nsIApplicationCache> appCache;
rv = appCacheService->GetApplicationCache(appCacheClientID,
getter_AddRefs(appCache));
if (NS_SUCCEEDED(rv)) {
appCacheChan->SetApplicationCache(appCache);
setChooseApplicationCache = false;
}
}
if (setChooseApplicationCache) {
bool inBrowser = false;
uint32_t appId = NECKO_NO_APP_ID;
if (mLoadContext) {
mLoadContext->GetIsInBrowserElement(&inBrowser);
mLoadContext->GetAppId(&appId);
}
bool chooseAppCache = false;
nsCOMPtr<nsIScriptSecurityManager> secMan =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
if (secMan) {
nsCOMPtr<nsIPrincipal> principal;
secMan->GetAppCodebasePrincipal(uri, appId, inBrowser, getter_AddRefs(principal));
// This works because we've already called SetNotificationCallbacks and
// done mPBOverride logic by this point.
chooseAppCache = NS_ShouldCheckAppCache(principal, NS_UsePrivateBrowsing(mChannel));
}
appCacheChan->SetChooseApplicationCache(chooseAppCache);
}
}
rv = mChannel->AsyncOpen(mParentListener, nullptr);
if (NS_FAILED(rv))
return SendFailedAsyncOpen(rv);
return true;
}
bool
HttpChannelParent::ConnectChannel(const uint32_t& channelId)
{
nsresult rv;
LOG(("Looking for a registered channel [this=%p, id=%d]", this, channelId));
nsCOMPtr<nsIChannel> channel;
rv = NS_LinkRedirectChannels(channelId, this, getter_AddRefs(channel));
mChannel = static_cast<nsHttpChannel*>(channel.get());
LOG((" found channel %p, rv=%08x", mChannel.get(), rv));
if (mPBOverride != kPBOverride_Unset) {
// redirected-to channel may not support PB
nsCOMPtr<nsIPrivateBrowsingChannel> pbChannel = do_QueryObject(mChannel);
if (pbChannel) {
pbChannel->SetPrivate(mPBOverride == kPBOverride_Private ? true : false);
}
}
return true;
}
bool
HttpChannelParent::RecvSetPriority(const uint16_t& priority)
{
if (mChannel) {
mChannel->SetPriority(priority);
}
nsCOMPtr<nsISupportsPriority> priorityRedirectChannel =
do_QueryInterface(mRedirectChannel);
if (priorityRedirectChannel)
priorityRedirectChannel->SetPriority(priority);
return true;
}
bool
HttpChannelParent::RecvSuspend()
{
if (mChannel) {
mChannel->Suspend();
}
return true;
}
bool
HttpChannelParent::RecvResume()
{
if (mChannel) {
mChannel->Resume();
}
return true;
}
bool
HttpChannelParent::RecvCancel(const nsresult& status)
{
// May receive cancel before channel has been constructed!
if (mChannel) {
mChannel->Cancel(status);
}
return true;
}
bool
HttpChannelParent::RecvSetCacheTokenCachedCharset(const nsCString& charset)
{
if (mCacheEntry)
mCacheEntry->SetMetaDataElement("charset", charset.get());
return true;
}
bool
HttpChannelParent::RecvUpdateAssociatedContentSecurity(const int32_t& broken,
const int32_t& no)
{
if (mAssociatedContentSecurity) {
mAssociatedContentSecurity->SetCountSubRequestsBrokenSecurity(broken);
mAssociatedContentSecurity->SetCountSubRequestsNoSecurity(no);
}
return true;
}
bool
HttpChannelParent::RecvRedirect2Verify(const nsresult& result,
const RequestHeaderTuples& changedHeaders,
const OptionalURIParams& aAPIRedirectURI)
{
if (NS_SUCCEEDED(result)) {
nsCOMPtr<nsIHttpChannel> newHttpChannel =
do_QueryInterface(mRedirectChannel);
if (newHttpChannel) {
nsCOMPtr<nsIURI> apiRedirectUri = DeserializeURI(aAPIRedirectURI);
if (apiRedirectUri)
newHttpChannel->RedirectTo(apiRedirectUri);
for (uint32_t i = 0; i < changedHeaders.Length(); i++) {
newHttpChannel->SetRequestHeader(changedHeaders[i].mHeader,
changedHeaders[i].mValue,
changedHeaders[i].mMerge);
}
}
}
if (!mRedirectCallback) {
// This should according the logic never happen, log the situation.
if (mReceivedRedirect2Verify)
LOG(("RecvRedirect2Verify[%p]: Duplicate fire", this));
if (mSentRedirect1BeginFailed)
LOG(("RecvRedirect2Verify[%p]: Send to child failed", this));
if (mSentRedirect1Begin && NS_FAILED(result))
LOG(("RecvRedirect2Verify[%p]: Redirect failed", this));
if (mSentRedirect1Begin && NS_SUCCEEDED(result))
LOG(("RecvRedirect2Verify[%p]: Redirect succeeded", this));
if (!mRedirectChannel)
LOG(("RecvRedirect2Verify[%p]: Missing redirect channel", this));
NS_ERROR("Unexpcted call to HttpChannelParent::RecvRedirect2Verify, "
"mRedirectCallback null");
}
mReceivedRedirect2Verify = true;
if (mRedirectCallback) {
mRedirectCallback->OnRedirectVerifyCallback(result);
mRedirectCallback = nullptr;
}
return true;
}
bool
HttpChannelParent::RecvDocumentChannelCleanup()
{
// From now on only using mAssociatedContentSecurity. Free everything else.
mChannel = 0; // Reclaim some memory sooner.
mCacheEntry = 0; // Else we'll block other channels reading same URI
return true;
}
bool
HttpChannelParent::RecvMarkOfflineCacheEntryAsForeign()
{
if (mOfflineForeignMarker) {
mOfflineForeignMarker->MarkAsForeign();
mOfflineForeignMarker = 0;
}
return true;
}
bool
HttpChannelParent::RecvDivertOnDataAvailable(const nsCString& data,
const uint64_t& offset,
const uint32_t& count)
{
MOZ_ASSERT(mParentListener);
if (NS_WARN_IF(!mDivertingFromChild)) {
MOZ_ASSERT(mDivertingFromChild,
"Cannot RecvDivertOnDataAvailable if diverting is not set!");
FailDiversion(NS_ERROR_UNEXPECTED);
return false;
}
// Drop OnDataAvailables if the parent was canceled already.
if (NS_FAILED(mStatus)) {
return true;
}
nsCOMPtr<nsIInputStream> stringStream;
nsresult rv = NS_NewByteInputStream(getter_AddRefs(stringStream), data.get(),
count, NS_ASSIGNMENT_DEPEND);
if (NS_FAILED(rv)) {
if (mChannel) {
mChannel->Cancel(rv);
}
mStatus = rv;
return true;
}
rv = mParentListener->OnDataAvailable(mChannel, nullptr, stringStream,
offset, count);
stringStream->Close();
if (NS_FAILED(rv)) {
if (mChannel) {
mChannel->Cancel(rv);
}
mStatus = rv;
return true;
}
return true;
}
bool
HttpChannelParent::RecvDivertOnStopRequest(const nsresult& statusCode)
{
MOZ_ASSERT(mParentListener);
if (NS_WARN_IF(!mDivertingFromChild)) {
MOZ_ASSERT(mDivertingFromChild,
"Cannot RecvDivertOnStopRequest if diverting is not set!");
FailDiversion(NS_ERROR_UNEXPECTED);
return false;
}
// Honor the channel's status even if the underlying transaction completed.
nsresult status = NS_FAILED(mStatus) ? mStatus : statusCode;
// Reset fake pending status in case OnStopRequest has already been called.
if (mChannel) {
mChannel->ForcePending(false);
}
mParentListener->OnStopRequest(mChannel, nullptr, status);
return true;
}
bool
HttpChannelParent::RecvDivertComplete()
{
MOZ_ASSERT(mParentListener);
mParentListener = nullptr;
if (NS_WARN_IF(!mDivertingFromChild)) {
MOZ_ASSERT(mDivertingFromChild,
"Cannot RecvDivertComplete if diverting is not set!");
FailDiversion(NS_ERROR_UNEXPECTED);
return false;
}
nsresult rv = ResumeForDiversion();
if (NS_WARN_IF(NS_FAILED(rv))) {
FailDiversion(NS_ERROR_UNEXPECTED);
return false;
}
return true;
}
//-----------------------------------------------------------------------------
// HttpChannelParent::nsIRequestObserver
//-----------------------------------------------------------------------------
NS_IMETHODIMP
HttpChannelParent::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext)
{
LOG(("HttpChannelParent::OnStartRequest [this=%p]\n", this));
MOZ_RELEASE_ASSERT(!mDivertingFromChild,
"Cannot call OnStartRequest if diverting is set!");
nsHttpChannel *chan = static_cast<nsHttpChannel *>(aRequest);
nsHttpResponseHead *responseHead = chan->GetResponseHead();
nsHttpRequestHead *requestHead = chan->GetRequestHead();
bool isFromCache = false;
chan->IsFromCache(&isFromCache);
uint32_t expirationTime = nsICache::NO_EXPIRATION_TIME;
chan->GetCacheTokenExpirationTime(&expirationTime);
nsCString cachedCharset;
chan->GetCacheTokenCachedCharset(cachedCharset);
bool loadedFromApplicationCache;
chan->GetLoadedFromApplicationCache(&loadedFromApplicationCache);
if (loadedFromApplicationCache) {
mOfflineForeignMarker = chan->GetOfflineCacheEntryAsForeignMarker();
nsCOMPtr<nsIApplicationCache> appCache;
chan->GetApplicationCache(getter_AddRefs(appCache));
nsCString appCacheGroupId;
nsCString appCacheClientId;
appCache->GetGroupID(appCacheGroupId);
appCache->GetClientID(appCacheClientId);
if (mIPCClosed ||
!SendAssociateApplicationCache(appCacheGroupId, appCacheClientId))
{
return NS_ERROR_UNEXPECTED;
}
}
nsCOMPtr<nsIEncodedChannel> encodedChannel = do_QueryInterface(aRequest);
if (encodedChannel)
encodedChannel->SetApplyConversion(false);
// Keep the cache entry for future use in RecvSetCacheTokenCachedCharset().
// It could be already released by nsHttpChannel at that time.
nsCOMPtr<nsISupports> cacheEntry;
chan->GetCacheToken(getter_AddRefs(cacheEntry));
mCacheEntry = do_QueryInterface(cacheEntry);
nsCString secInfoSerialization;
nsCOMPtr<nsISupports> secInfoSupp;
chan->GetSecurityInfo(getter_AddRefs(secInfoSupp));
if (secInfoSupp) {
mAssociatedContentSecurity = do_QueryInterface(secInfoSupp);
nsCOMPtr<nsISerializable> secInfoSer = do_QueryInterface(secInfoSupp);
if (secInfoSer)
NS_SerializeToString(secInfoSer, secInfoSerialization);
}
if (mIPCClosed ||
!SendOnStartRequest(responseHead ? *responseHead : nsHttpResponseHead(),
!!responseHead,
requestHead->Headers(),
isFromCache,
mCacheEntry ? true : false,
expirationTime, cachedCharset, secInfoSerialization,
mChannel->GetSelfAddr(), mChannel->GetPeerAddr()))
{
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
NS_IMETHODIMP
HttpChannelParent::OnStopRequest(nsIRequest *aRequest,
nsISupports *aContext,
nsresult aStatusCode)
{
LOG(("HttpChannelParent::OnStopRequest: [this=%p status=%x]\n",
this, aStatusCode));
MOZ_RELEASE_ASSERT(!mDivertingFromChild,
"Cannot call OnStopRequest if diverting is set!");
if (mIPCClosed || !SendOnStopRequest(aStatusCode))
return NS_ERROR_UNEXPECTED;
return NS_OK;
}
//-----------------------------------------------------------------------------
// HttpChannelParent::nsIStreamListener
//-----------------------------------------------------------------------------
NS_IMETHODIMP
HttpChannelParent::OnDataAvailable(nsIRequest *aRequest,
nsISupports *aContext,
nsIInputStream *aInputStream,
uint64_t aOffset,
uint32_t aCount)
{
LOG(("HttpChannelParent::OnDataAvailable [this=%p]\n", this));
MOZ_RELEASE_ASSERT(!mDivertingFromChild,
"Cannot call OnDataAvailable if diverting is set!");
nsCString data;
nsresult rv = NS_ReadInputStreamToString(aInputStream, data, aCount);
if (NS_FAILED(rv))
return rv;
// OnDataAvailable is always preceded by OnStatus/OnProgress calls that set
// mStoredStatus/mStoredProgress(Max) to appropriate values, unless
// LOAD_BACKGROUND set. In that case, they'll have garbage values, but
// child doesn't use them.
if (mIPCClosed || !SendOnTransportAndData(mStoredStatus, mStoredProgress,
mStoredProgressMax, data, aOffset,
aCount)) {
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
//-----------------------------------------------------------------------------
// HttpChannelParent::nsIProgressEventSink
//-----------------------------------------------------------------------------
NS_IMETHODIMP
HttpChannelParent::OnProgress(nsIRequest *aRequest,
nsISupports *aContext,
uint64_t aProgress,
uint64_t aProgressMax)
{
// OnStatus has always just set mStoredStatus. If it indicates this precedes
// OnDataAvailable, store and ODA will send to child.
if (mStoredStatus == NS_NET_STATUS_RECEIVING_FROM ||
mStoredStatus == NS_NET_STATUS_READING)
{
mStoredProgress = aProgress;
mStoredProgressMax = aProgressMax;
} else {
// Send to child now. The only case I've observed that this handles (i.e.
// non-ODA status with progress > 0) is data upload progress notification
// (status == NS_NET_STATUS_SENDING_TO)
if (mIPCClosed || !SendOnProgress(aProgress, aProgressMax))
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
NS_IMETHODIMP
HttpChannelParent::OnStatus(nsIRequest *aRequest,
nsISupports *aContext,
nsresult aStatus,
const char16_t *aStatusArg)
{
// If this precedes OnDataAvailable, store and ODA will send to child.
if (aStatus == NS_NET_STATUS_RECEIVING_FROM ||
aStatus == NS_NET_STATUS_READING)
{
mStoredStatus = aStatus;
return NS_OK;
}
// Otherwise, send to child now
if (mIPCClosed || !SendOnStatus(aStatus))
return NS_ERROR_UNEXPECTED;
return NS_OK;
}
//-----------------------------------------------------------------------------
// HttpChannelParent::nsIParentChannel
//-----------------------------------------------------------------------------
NS_IMETHODIMP
HttpChannelParent::SetParentListener(HttpChannelParentListener* aListener)
{
MOZ_ASSERT(aListener);
MOZ_ASSERT(!mParentListener, "SetParentListener should only be called for "
"new HttpChannelParents after a redirect, when "
"mParentListener is null.");
mParentListener = aListener;
return NS_OK;
}
NS_IMETHODIMP
HttpChannelParent::Delete()
{
if (!mIPCClosed)
unused << SendDeleteSelf();
return NS_OK;
}
//-----------------------------------------------------------------------------
// HttpChannelParent::nsIParentRedirectingChannel
//-----------------------------------------------------------------------------
NS_IMETHODIMP
HttpChannelParent::StartRedirect(uint32_t newChannelId,
nsIChannel* newChannel,
uint32_t redirectFlags,
nsIAsyncVerifyRedirectCallback* callback)
{
if (mIPCClosed)
return NS_BINDING_ABORTED;
nsCOMPtr<nsIURI> newURI;
newChannel->GetURI(getter_AddRefs(newURI));
URIParams uriParams;
SerializeURI(newURI, uriParams);
nsHttpResponseHead *responseHead = mChannel->GetResponseHead();
bool result = SendRedirect1Begin(newChannelId, uriParams, redirectFlags,
responseHead ? *responseHead
: nsHttpResponseHead());
if (!result) {
// Bug 621446 investigation
mSentRedirect1BeginFailed = true;
return NS_BINDING_ABORTED;
}
// Bug 621446 investigation
mSentRedirect1Begin = true;
// Result is handled in RecvRedirect2Verify above
mRedirectChannel = newChannel;
mRedirectCallback = callback;
return NS_OK;
}
NS_IMETHODIMP
HttpChannelParent::CompleteRedirect(bool succeeded)
{
if (succeeded && !mIPCClosed) {
// TODO: check return value: assume child dead if failed
unused << SendRedirect3Complete();
}
mRedirectChannel = nullptr;
return NS_OK;
}
//-----------------------------------------------------------------------------
// HttpChannelParent::ADivertableParentChannel
//-----------------------------------------------------------------------------
nsresult
HttpChannelParent::SuspendForDiversion()
{
MOZ_ASSERT(mChannel);
MOZ_ASSERT(mParentListener);
if (NS_WARN_IF(mDivertingFromChild)) {
MOZ_ASSERT(!mDivertingFromChild, "Already suspended for diversion!");
return NS_ERROR_UNEXPECTED;
}
// Try suspending the channel. Allow it to fail, since OnStopRequest may have
// been called and thus the channel may not be pending.
nsresult rv = mChannel->Suspend();
MOZ_ASSERT(NS_SUCCEEDED(rv) || rv == NS_ERROR_NOT_AVAILABLE);
mSuspendedForDiversion = NS_SUCCEEDED(rv);
rv = mParentListener->SuspendForDiversion();
MOZ_ASSERT(NS_SUCCEEDED(rv));
// Once this is set, no more OnStart/OnData/OnStop callbacks should be sent
// to the child.
mDivertingFromChild = true;
return NS_OK;
}
/* private, supporting function for ADivertableParentChannel */
nsresult
HttpChannelParent::ResumeForDiversion()
{
MOZ_ASSERT(mChannel);
if (NS_WARN_IF(!mDivertingFromChild)) {
MOZ_ASSERT(mDivertingFromChild,
"Cannot ResumeForDiversion if not diverting!");
return NS_ERROR_UNEXPECTED;
}
if (mSuspendedForDiversion) {
// The nsHttpChannel will deliver remaining OnData/OnStop for the transfer.
nsresult rv = mChannel->Resume();
if (NS_WARN_IF(NS_FAILED(rv))) {
FailDiversion(NS_ERROR_UNEXPECTED, true);
return rv;
}
mSuspendedForDiversion = false;
}
if (NS_WARN_IF(mIPCClosed || !SendDeleteSelf())) {
FailDiversion(NS_ERROR_UNEXPECTED);
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
void
HttpChannelParent::DivertTo(nsIStreamListener *aListener)
{
MOZ_ASSERT(mParentListener);
if (NS_WARN_IF(!mDivertingFromChild)) {
MOZ_ASSERT(mDivertingFromChild,
"Cannot DivertTo new listener if diverting is not set!");
return;
}
DebugOnly<nsresult> rv = mParentListener->DivertTo(aListener);
MOZ_ASSERT(NS_SUCCEEDED(rv));
if (NS_WARN_IF(mIPCClosed || !SendFlushedForDiversion())) {
FailDiversion(NS_ERROR_UNEXPECTED);
return;
}
// Call OnStartRequest and SendDivertMessages asynchronously to avoid
// reentering client context.
NS_DispatchToCurrentThread(
NS_NewRunnableMethod(this, &HttpChannelParent::StartDiversion));
return;
}
void
HttpChannelParent::StartDiversion()
{
if (NS_WARN_IF(!mDivertingFromChild)) {
MOZ_ASSERT(mDivertingFromChild,
"Cannot StartDiversion if diverting is not set!");
return;
}
// Fake pending status in case OnStopRequest has already been called.
if (mChannel) {
mChannel->ForcePending(true);
}
// Call OnStartRequest for the "DivertTo" listener.
nsresult rv = mParentListener->OnStartRequest(mChannel, nullptr);
if (NS_FAILED(rv)) {
if (mChannel) {
mChannel->Cancel(rv);
}
mStatus = rv;
}
mDivertedOnStartRequest = true;
// After OnStartRequest has been called, tell HttpChannelChild to divert the
// OnDataAvailables and OnStopRequest to this HttpChannelParent.
if (NS_WARN_IF(mIPCClosed || !SendDivertMessages())) {
FailDiversion(NS_ERROR_UNEXPECTED);
return;
}
}
class HTTPFailDiversionEvent : public nsRunnable
{
public:
HTTPFailDiversionEvent(HttpChannelParent *aChannelParent,
nsresult aErrorCode,
bool aSkipResume)
: mChannelParent(aChannelParent)
, mErrorCode(aErrorCode)
, mSkipResume(aSkipResume)
{
MOZ_RELEASE_ASSERT(aChannelParent);
MOZ_RELEASE_ASSERT(NS_FAILED(aErrorCode));
}
NS_IMETHOD Run()
{
mChannelParent->NotifyDiversionFailed(mErrorCode, mSkipResume);
return NS_OK;
}
private:
nsRefPtr<HttpChannelParent> mChannelParent;
nsresult mErrorCode;
bool mSkipResume;
};
void
HttpChannelParent::FailDiversion(nsresult aErrorCode,
bool aSkipResume)
{
MOZ_RELEASE_ASSERT(NS_FAILED(aErrorCode));
MOZ_RELEASE_ASSERT(mDivertingFromChild);
MOZ_RELEASE_ASSERT(mParentListener);
MOZ_RELEASE_ASSERT(mChannel);
NS_DispatchToCurrentThread(
new HTTPFailDiversionEvent(this, aErrorCode, aSkipResume));
}
void
HttpChannelParent::NotifyDiversionFailed(nsresult aErrorCode,
bool aSkipResume)
{
MOZ_RELEASE_ASSERT(NS_FAILED(aErrorCode));
MOZ_RELEASE_ASSERT(mDivertingFromChild);
MOZ_RELEASE_ASSERT(mParentListener);
MOZ_RELEASE_ASSERT(mChannel);
mChannel->Cancel(aErrorCode);
mChannel->ForcePending(false);
bool isPending = false;
nsresult rv = mChannel->IsPending(&isPending);
MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
// Resume only if we suspended earlier.
if (mSuspendedForDiversion) {
mChannel->Resume();
}
// Channel has already sent OnStartRequest to the child, so ensure that we
// call it here if it hasn't already been called.
if (!mDivertedOnStartRequest) {
mChannel->ForcePending(true);
mParentListener->OnStartRequest(mChannel, nullptr);
mChannel->ForcePending(false);
}
// If the channel is pending, it will call OnStopRequest itself; otherwise, do
// it here.
if (!isPending) {
mParentListener->OnStopRequest(mChannel, nullptr, aErrorCode);
}
mParentListener = nullptr;
mChannel = nullptr;
if (!mIPCClosed) {
unused << SendDeleteSelf();
}
}
}} // mozilla::net
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