/* 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 "nsWyciwyg.h"

#include "mozilla/net/WyciwygChannelParent.h"

#include "nsWyciwygChannel.h"

#include "nsNetUtil.h"

#include "nsCharsetSource.h"

#include "nsISerializable.h"

#include "nsSerializationHelper.h"

#include "mozilla/ipc/URIUtils.h"

#include "mozilla/net/NeckoParent.h"

#include "SerializedLoadContext.h"

#include "nsIContentPolicy.h"

#include "mozilla/ipc/BackgroundUtils.h"

#include "mozilla/dom/ContentParent.h"

using namespace mozilla::ipc;

namespace mozilla {

namespace net {

WyciwygChannelParent::WyciwygChannelParent()

 : mIPCClosed(false)

 , mReceivedAppData(false)

{

}

void

WyciwygChannelParent::ActorDestroy(ActorDestroyReason why)

{

  // We may still have refcount>0 if the channel hasn't called OnStopRequest

  // yet, but we must not send any more msgs to child.

  mIPCClosed = true;

  // We need to force the cycle to break here

  if (mChannel) {

    mChannel->SetNotificationCallbacks(nullptr);

  }

}

//-----------------------------------------------------------------------------

// WyciwygChannelParent::nsISupports

//-----------------------------------------------------------------------------

NS_IMPL_ISUPPORTS(WyciwygChannelParent,

                  nsIStreamListener,

                  nsIInterfaceRequestor,

                  nsIRequestObserver)

//-----------------------------------------------------------------------------

// WyciwygChannelParent::PWyciwygChannelParent

//-----------------------------------------------------------------------------

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvInit(const URIParams&          aURI,

                               const ipc::PrincipalInfo& aRequestingPrincipalInfo,

                               const ipc::PrincipalInfo& aTriggeringPrincipalInfo,

                               const ipc::PrincipalInfo& aPrincipalToInheritInfo,

                               const uint32_t&           aSecurityFlags,

                               const uint32_t&           aContentPolicyType)

{

  nsresult rv;

  nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);

  if (!uri)

    return IPC_FAIL_NO_REASON(this);

  LOG(("WyciwygChannelParent RecvInit [this=%p uri=%s]\n",

       this, uri->GetSpecOrDefault().get()));

  nsCOMPtr<nsIIOService> ios(do_GetIOService(&rv));

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  nsCOMPtr<nsIPrincipal> requestingPrincipal =

    mozilla::ipc::PrincipalInfoToPrincipal(aRequestingPrincipalInfo, &rv);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  nsCOMPtr<nsIPrincipal> triggeringPrincipal =

    mozilla::ipc::PrincipalInfoToPrincipal(aTriggeringPrincipalInfo, &rv);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  nsCOMPtr<nsIPrincipal> principalToInherit =

    mozilla::ipc::PrincipalInfoToPrincipal(aPrincipalToInheritInfo, &rv);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  nsCOMPtr<nsIChannel> chan;

  rv = NS_NewChannelWithTriggeringPrincipal(getter_AddRefs(chan),

                                           uri,

                                           requestingPrincipal,

                                           triggeringPrincipal,

                                           aSecurityFlags,

                                           aContentPolicyType,

                                           nullptr,   // PerformanceStorage

                                           nullptr,   // loadGroup

                                           nullptr,   // aCallbacks

                                           nsIRequest::LOAD_NORMAL,

                                           ios);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  nsCOMPtr<nsILoadInfo> loadInfo = chan->GetLoadInfo();

  if (loadInfo) {

    rv = loadInfo->SetPrincipalToInherit(principalToInherit);

  }

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  mChannel = do_QueryInterface(chan, &rv);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  return IPC_OK();

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvAppData(const IPC::SerializedLoadContext& loadContext,

                                  const PBrowserOrId &parent)

{

  LOG(("WyciwygChannelParent RecvAppData [this=%p]\n", this));

  if (!SetupAppData(loadContext, parent))

    return IPC_FAIL_NO_REASON(this);

  if (!mChannel) {

    return IPC_FAIL(this, "Should have a channel");

  }

  mChannel->SetNotificationCallbacks(this);

  return IPC_OK();

}

bool

WyciwygChannelParent::SetupAppData(const IPC::SerializedLoadContext& loadContext,

                                   const PBrowserOrId &aParent)

{

  if (!mChannel)

    return true;

  const char* error = NeckoParent::CreateChannelLoadContext(aParent,

                                                            Manager()->Manager(),

                                                            loadContext,

                                                            nullptr,

                                                            mLoadContext);

  if (error) {

    printf_stderr("WyciwygChannelParent::SetupAppData: FATAL ERROR: %s\n",

                  error);

    return false;

  }

  if (!mLoadContext && loadContext.IsPrivateBitValid()) {

    nsCOMPtr<nsIPrivateBrowsingChannel> pbChannel = do_QueryInterface(mChannel);

    if (pbChannel)

      pbChannel->SetPrivate(loadContext.mOriginAttributes.mPrivateBrowsingId > 0);

  }

  mReceivedAppData = true;

  return true;

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvAsyncOpen(const URIParams& aOriginal,

                                    const uint32_t& aLoadFlags,

                                    const IPC::SerializedLoadContext& loadContext,

                                    const PBrowserOrId &aParent)

{

  nsCOMPtr<nsIURI> original = DeserializeURI(aOriginal);

  if (!original)

    return IPC_FAIL_NO_REASON(this);

  LOG(("WyciwygChannelParent RecvAsyncOpen [this=%p]\n", this));

  if (!mChannel)

    return IPC_OK();

  nsresult rv;

  rv = mChannel->SetOriginalURI(original);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  rv = mChannel->SetLoadFlags(aLoadFlags);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  if (!mReceivedAppData && !SetupAppData(loadContext, aParent)) {

    return IPC_FAIL_NO_REASON(this);

  }

  rv = mChannel->SetNotificationCallbacks(this);

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  nsCOMPtr<nsILoadInfo> loadInfo = mChannel->GetLoadInfo();

  if (loadInfo && loadInfo->GetEnforceSecurity()) {

    rv = mChannel->AsyncOpen2(this);

  }

  else {

    rv = mChannel->AsyncOpen(this, nullptr);

  }

  if (NS_FAILED(rv)) {

    if (!SendCancelEarly(rv)) {

      return IPC_FAIL_NO_REASON(this);

    }

    return IPC_OK();

  }

  return IPC_OK();

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvWriteToCacheEntry(const nsDependentSubstring& data)

{

  if (!mReceivedAppData) {

    printf_stderr("WyciwygChannelParent::RecvWriteToCacheEntry: FATAL ERROR: didn't receive app data\n");

    return IPC_FAIL_NO_REASON(this);

  }

  if (mChannel)

    mChannel->WriteToCacheEntry(data);

  return IPC_OK();

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvCloseCacheEntry(const nsresult& reason)

{

  if (mChannel) {

    mChannel->CloseCacheEntry(reason);

  }

  return IPC_OK();

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvSetCharsetAndSource(const int32_t& aCharsetSource,

                                              const nsCString& aCharset)

{

  if (mChannel)

    mChannel->SetCharsetAndSource(aCharsetSource, aCharset);

  return IPC_OK();

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvSetSecurityInfo(const nsCString& aSecurityInfo)

{

  if (mChannel) {

    nsCOMPtr<nsISupports> securityInfo;

    NS_DeserializeObject(aSecurityInfo, getter_AddRefs(securityInfo));

    mChannel->SetSecurityInfo(securityInfo);

  }

  return IPC_OK();

}

mozilla::ipc::IPCResult

WyciwygChannelParent::RecvCancel(const nsresult& aStatusCode)

{

  if (mChannel)

    mChannel->Cancel(aStatusCode);

  return IPC_OK();

}

//-----------------------------------------------------------------------------

// WyciwygChannelParent::nsIRequestObserver

//-----------------------------------------------------------------------------

NS_IMETHODIMP

WyciwygChannelParent::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext)

{

  LOG(("WyciwygChannelParent::OnStartRequest [this=%p]\n", this));

  nsresult rv;

  nsCOMPtr<nsIWyciwygChannel> chan = do_QueryInterface(aRequest, &rv);

  NS_ENSURE_SUCCESS(rv, rv);

  // Send down any permissions which are relevant to this URL if we are

  // performing a document load.

  if (!mIPCClosed) {

    PContentParent* pcp = Manager()->Manager();

    MOZ_ASSERT(pcp, "We should have a manager if our IPC isn't closed");

    rv = static_cast<ContentParent*>(pcp)->AboutToLoadHttpFtpWyciwygDocumentForChild(chan);

    MOZ_ASSERT(NS_SUCCEEDED(rv));

  }

  nsresult status;

  chan->GetStatus(&status);

  int64_t contentLength = -1;

  chan->GetContentLength(&contentLength);

  int32_t charsetSource = kCharsetUninitialized;

  nsAutoCString charset;

  chan->GetCharsetAndSource(&charsetSource, charset);

  nsCOMPtr<nsISupports> securityInfo;

  chan->GetSecurityInfo(getter_AddRefs(securityInfo));

  nsCString secInfoStr;

  if (securityInfo) {

    nsCOMPtr<nsISerializable> serializable = do_QueryInterface(securityInfo);

    if (serializable)

      NS_SerializeToString(serializable, secInfoStr);

    else {

      NS_ERROR("Can't serialize security info");

      return NS_ERROR_UNEXPECTED;

    }

  }

  if (mIPCClosed ||

      !SendOnStartRequest(status, contentLength, charsetSource, charset, secInfoStr)) {

    return NS_ERROR_UNEXPECTED;

  }

  return NS_OK;

}

NS_IMETHODIMP

WyciwygChannelParent::OnStopRequest(nsIRequest *aRequest,

                                    nsISupports *aContext,

                                    nsresult aStatusCode)

{

  LOG(("WyciwygChannelParent::OnStopRequest: [this=%p status=%" PRIu32 "]\n",

       this, static_cast<uint32_t>(aStatusCode)));

  if (mIPCClosed || !SendOnStopRequest(aStatusCode)) {

    return NS_ERROR_UNEXPECTED;

  }

  return NS_OK;

}

//-----------------------------------------------------------------------------

// WyciwygChannelParent::nsIStreamListener

//-----------------------------------------------------------------------------

NS_IMETHODIMP

WyciwygChannelParent::OnDataAvailable(nsIRequest *aRequest,

                                      nsISupports *aContext,

                                      nsIInputStream *aInputStream,

                                      uint64_t aOffset,

                                      uint32_t aCount)

{

  LOG(("WyciwygChannelParent::OnDataAvailable [this=%p]\n", this));

  nsCString data;

  nsresult rv = NS_ReadInputStreamToString(aInputStream, data, aCount);

  if (NS_FAILED(rv))

    return rv;

  if (mIPCClosed || !SendOnDataAvailable(data, aOffset)) {

    return NS_ERROR_UNEXPECTED;

  }

  return NS_OK;

}

//-----------------------------------------------------------------------------

// WyciwygChannelParent::nsIInterfaceRequestor

//-----------------------------------------------------------------------------

NS_IMETHODIMP

WyciwygChannelParent::GetInterface(const nsIID& uuid, void** result)

{

  // Only support nsILoadContext if child channel's callbacks did too

  if (uuid.Equals(NS_GET_IID(nsILoadContext)) && mLoadContext) {

    nsCOMPtr<nsILoadContext> copy = mLoadContext;

    copy.forget(result);

    return NS_OK;

  }

  return QueryInterface(uuid, result);

}

} // namespace net

} // namespace mozilla