File: ExternalHelperAppParent.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 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/dom/PExternalHelperAppParent.h"
#include "nsIChannel.h"
#include "nsIMultiPartChannel.h"
#include "nsIResumableChannel.h"
#include "nsIStreamListener.h"
#include "nsHashPropertyBag.h"
#include "PrivateBrowsingChannel.h"

namespace IPC {
class URI;
}  // namespace IPC

namespace mozilla {

namespace ipc {
class OptionalURIParams;
}  // namespace ipc

namespace net {
class PChannelDiverterParent;
}  // namespace net

namespace dom {

#define NS_IEXTERNALHELPERAPPPARENT_IID              \
  {                                                  \
    0x127a01bc, 0x2a49, 0x46a8, {                    \
      0x8c, 0x63, 0x4b, 0x5d, 0x3c, 0xa4, 0x07, 0x9c \
    }                                                \
  }

class nsIExternalHelperAppParent : public nsISupports {
 public:
  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IEXTERNALHELPERAPPPARENT_IID)

  /**
   * Returns true if this fake channel represented a file channel in the child.
   */
  virtual bool WasFileChannel() = 0;
};

NS_DEFINE_STATIC_IID_ACCESSOR(nsIExternalHelperAppParent,
                              NS_IEXTERNALHELPERAPPPARENT_IID)

class ContentParent;
class PBrowserParent;

class ExternalHelperAppParent
    : public PExternalHelperAppParent,
      public nsHashPropertyBag,
      public nsIChannel,
      public nsIMultiPartChannel,
      public nsIResumableChannel,
      public nsIStreamListener,
      public net::PrivateBrowsingChannel<ExternalHelperAppParent>,
      public nsIExternalHelperAppParent {
  typedef mozilla::ipc::OptionalURIParams OptionalURIParams;

 public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIREQUEST
  NS_DECL_NSICHANNEL
  NS_DECL_NSIMULTIPARTCHANNEL
  NS_DECL_NSIRESUMABLECHANNEL
  NS_DECL_NSISTREAMLISTENER
  NS_DECL_NSIREQUESTOBSERVER

  mozilla::ipc::IPCResult RecvOnStartRequest(const nsCString& entityID,
                                             PBrowserParent* aBrowser) override;
  mozilla::ipc::IPCResult RecvOnDataAvailable(const nsCString& data,
                                              const uint64_t& offset,
                                              const uint32_t& count) override;
  mozilla::ipc::IPCResult RecvOnStopRequest(const nsresult& code) override;

  mozilla::ipc::IPCResult RecvDivertToParentUsing(
      PChannelDiverterParent* diverter, PBrowserParent* aBrowser) override;

  bool WasFileChannel() override { return mWasFileChannel; }

  ExternalHelperAppParent(const OptionalURIParams& uri,
                          const int64_t& contentLength,
                          const bool& wasFileChannel);
  void Init(ContentParent* parent, const nsCString& aMimeContentType,
            const nsCString& aContentDisposition,
            const uint32_t& aContentDispositionHint,
            const nsString& aContentDispositionFilename, const bool& aForceSave,
            const OptionalURIParams& aReferrer, PBrowserParent* aBrowser);

 protected:
  virtual ~ExternalHelperAppParent();

  virtual void ActorDestroy(ActorDestroyReason why) override;
  void Delete();

 private:
  nsCOMPtr<nsIStreamListener> mListener;
  nsCOMPtr<nsIURI> mURI;
  bool mPending;
#ifdef DEBUG
  bool mDiverted;
#endif
  bool mIPCClosed;
  nsLoadFlags mLoadFlags;
  nsresult mStatus;
  int64_t mContentLength;
  bool mWasFileChannel;
  uint32_t mContentDisposition;
  nsString mContentDispositionFilename;
  nsCString mContentDispositionHeader;
  nsCString mEntityID;
};

}  // namespace dom
}  // namespace mozilla