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/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 *  The Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Jason Duell <jduell.mcbugs@gmail.com>
 *   Daniel Witte <dwitte@mozilla.com>
 *   Honza Bambas <honzab@firemni.cz>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * ***** END LICENSE BLOCK ***** */

#ifndef mozilla_net_HttpChannelChild_h
#define mozilla_net_HttpChannelChild_h

#include "mozilla/net/HttpBaseChannel.h"
#include "mozilla/net/PHttpChannelChild.h"
#include "mozilla/net/ChannelEventQueue.h"

#include "nsIStreamListener.h"
#include "nsILoadGroup.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIProgressEventSink.h"
#include "nsICacheInfoChannel.h"
#include "nsIApplicationCache.h"
#include "nsIApplicationCacheChannel.h"
#include "nsIUploadChannel2.h"
#include "nsIResumableChannel.h"
#include "nsIProxiedChannel.h"
#include "nsIAsyncVerifyRedirectCallback.h"
#include "nsIAssociatedContentSecurity.h"
#include "nsIChildChannel.h"
#include "nsIHttpChannelChild.h"

namespace mozilla {
namespace net {

class HttpChannelChild : public PHttpChannelChild
                       , public HttpBaseChannel
                       , public HttpAsyncAborter<HttpChannelChild>
                       , public nsICacheInfoChannel
                       , public nsIProxiedChannel
                       , public nsIApplicationCacheChannel
                       , public nsIAsyncVerifyRedirectCallback
                       , public nsIAssociatedContentSecurity
                       , public nsIChildChannel
                       , public nsIHttpChannelChild
{
public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSICACHEINFOCHANNEL
  NS_DECL_NSIPROXIEDCHANNEL
  NS_DECL_NSIAPPLICATIONCACHECONTAINER
  NS_DECL_NSIAPPLICATIONCACHECHANNEL
  NS_DECL_NSIASYNCVERIFYREDIRECTCALLBACK
  NS_DECL_NSIASSOCIATEDCONTENTSECURITY
  NS_DECL_NSICHILDCHANNEL
  NS_DECL_NSIHTTPCHANNELCHILD

  HttpChannelChild();
  virtual ~HttpChannelChild();

  // Methods HttpBaseChannel didn't implement for us or that we override.
  //
  // nsIRequest
  NS_IMETHOD Cancel(nsresult status);
  NS_IMETHOD Suspend();
  NS_IMETHOD Resume();
  // nsIChannel
  NS_IMETHOD GetSecurityInfo(nsISupports **aSecurityInfo);
  NS_IMETHOD AsyncOpen(nsIStreamListener *listener, nsISupports *aContext);
  // HttpBaseChannel::nsIHttpChannel
  NS_IMETHOD SetRequestHeader(const nsACString& aHeader, 
                              const nsACString& aValue, 
                              PRBool aMerge);
  // nsIHttpChannelInternal
  NS_IMETHOD SetupFallbackChannel(const char *aFallbackKey);
  NS_IMETHOD GetLocalAddress(nsACString& addr);
  NS_IMETHOD GetLocalPort(PRInt32* port);
  NS_IMETHOD GetRemoteAddress(nsACString& addr);
  NS_IMETHOD GetRemotePort(PRInt32* port);
  // nsISupportsPriority
  NS_IMETHOD SetPriority(PRInt32 value);
  // nsIResumableChannel
  NS_IMETHOD ResumeAt(PRUint64 startPos, const nsACString& entityID);

  // IPDL holds a reference while the PHttpChannel protocol is live (starting at
  // AsyncOpen, and ending at either OnStopRequest or any IPDL error, either of
  // which call NeckoChild::DeallocPHttpChannel()).
  void AddIPDLReference();
  void ReleaseIPDLReference();

  bool IsSuspended();

protected:
  bool RecvOnStartRequest(const nsHttpResponseHead& responseHead,
                          const PRBool& useResponseHead,
                          const RequestHeaderTuples& requestHeaders,
                          const PRBool& isFromCache,
                          const PRBool& cacheEntryAvailable,
                          const PRUint32& cacheExpirationTime,
                          const nsCString& cachedCharset,
                          const nsCString& securityInfoSerialization,
                          const PRNetAddr& selfAddr,
                          const PRNetAddr& peerAddr);
  bool RecvOnTransportAndData(const nsresult& status,
                              const PRUint64& progress,
                              const PRUint64& progressMax,
                              const nsCString& data,
                              const PRUint32& offset,
                              const PRUint32& count);
  bool RecvOnStopRequest(const nsresult& statusCode);
  bool RecvOnProgress(const PRUint64& progress, const PRUint64& progressMax);
  bool RecvOnStatus(const nsresult& status);
  bool RecvFailedAsyncOpen(const nsresult& status);
  bool RecvRedirect1Begin(const PRUint32& newChannel,
                          const URI& newURI,
                          const PRUint32& redirectFlags,
                          const nsHttpResponseHead& responseHead);
  bool RecvRedirect3Complete();
  bool RecvAssociateApplicationCache(const nsCString& groupID,
                                     const nsCString& clientID);
  bool RecvDeleteSelf();

  bool GetAssociatedContentSecurity(nsIAssociatedContentSecurity** res = nsnull);
  virtual void DoNotifyListenerCleanup();

private:
  RequestHeaderTuples mRequestHeaders;
  nsCOMPtr<nsIChildChannel> mRedirectChannelChild;
  nsCOMPtr<nsISupports> mSecurityInfo;

  PRPackedBool mIsFromCache;
  PRPackedBool mCacheEntryAvailable;
  PRUint32     mCacheExpirationTime;
  nsCString    mCachedCharset;

  // If ResumeAt is called before AsyncOpen, we need to send extra data upstream
  bool mSendResumeAt;

  bool mIPCOpen;
  bool mKeptAlive;            // IPC kept open, but only for security info
  ChannelEventQueue mEventQ;

  // true after successful AsyncOpen until OnStopRequest completes.
  bool RemoteChannelExists() { return mIPCOpen && !mKeptAlive; }

  void AssociateApplicationCache(const nsCString &groupID,
                                 const nsCString &clientID);
  void OnStartRequest(const nsHttpResponseHead& responseHead,
                      const PRBool& useResponseHead,
                      const RequestHeaderTuples& requestHeaders,
                      const PRBool& isFromCache,
                      const PRBool& cacheEntryAvailable,
                      const PRUint32& cacheExpirationTime,
                      const nsCString& cachedCharset,
                      const nsCString& securityInfoSerialization,
                      const PRNetAddr& selfAddr,
                      const PRNetAddr& peerAddr);
  void OnTransportAndData(const nsresult& status,
                          const PRUint64 progress,
                          const PRUint64& progressMax,
                          const nsCString& data,
                          const PRUint32& offset,
                          const PRUint32& count);
  void OnStopRequest(const nsresult& statusCode);
  void OnProgress(const PRUint64& progress, const PRUint64& progressMax);
  void OnStatus(const nsresult& status);
  void FailedAsyncOpen(const nsresult& status);
  void HandleAsyncAbort();
  void Redirect1Begin(const PRUint32& newChannelId,
                      const URI& newUri,
                      const PRUint32& redirectFlags,
                      const nsHttpResponseHead& responseHead);
  void Redirect3Complete();
  void DeleteSelf();

  // Called asynchronously from Resume: continues any pending calls into client.
  void CompleteResume();

  friend class AssociateApplicationCacheEvent;
  friend class StartRequestEvent;
  friend class StopRequestEvent;
  friend class TransportAndDataEvent;
  friend class ProgressEvent;
  friend class StatusEvent;
  friend class FailedAsyncOpenEvent;
  friend class Redirect1Event;
  friend class Redirect3Event;
  friend class DeleteSelfEvent;
  friend class HttpAsyncAborter<HttpChannelChild>;
};

//-----------------------------------------------------------------------------
// inline functions
//-----------------------------------------------------------------------------

inline bool
HttpChannelChild::IsSuspended()
{
  return mSuspendCount != 0;
}

} // namespace net
} // namespace mozilla

#endif // mozilla_net_HttpChannelChild_h
