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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#ifndef nsPluginStreamListenerPeer_h_
#define nsPluginStreamListenerPeer_h_
#include "nscore.h"
#include "nsIFile.h"
#include "nsIStreamListener.h"
#include "nsIProgressEventSink.h"
#include "nsIHttpHeaderVisitor.h"
#include "nsWeakReference.h"
#include "nsNPAPIPluginStreamListener.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "nsNPAPIPluginInstance.h"
#include "nsIInterfaceRequestor.h"
#include "nsIChannelEventSink.h"
class nsIChannel;
/**
* When a plugin requests opens multiple requests to the same URL and
* the request must be satified by saving a file to disk, each stream
* listener holds a reference to the backing file: the file is only removed
* when all the listeners are done.
*/
class CachedFileHolder
{
public:
explicit CachedFileHolder(nsIFile* cacheFile);
~CachedFileHolder();
void AddRef();
void Release();
nsIFile* file() const { return mFile; }
private:
nsAutoRefCnt mRefCnt;
nsCOMPtr<nsIFile> mFile;
};
class nsPluginStreamListenerPeer : public nsIStreamListener,
public nsIProgressEventSink,
public nsIHttpHeaderVisitor,
public nsSupportsWeakReference,
public nsIInterfaceRequestor,
public nsIChannelEventSink
{
virtual ~nsPluginStreamListenerPeer();
public:
nsPluginStreamListenerPeer();
NS_DECL_ISUPPORTS
NS_DECL_NSIPROGRESSEVENTSINK
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIHTTPHEADERVISITOR
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSICHANNELEVENTSINK
// Called by RequestRead
void
MakeByteRangeString(NPByteRange* aRangeList, nsACString &string, int32_t *numRequests);
bool UseExistingPluginCacheFile(nsPluginStreamListenerPeer* psi);
// Called by GetURL and PostURL (via NewStream) or by the host in the case of
// the initial plugin stream.
nsresult Initialize(nsIURI *aURL,
nsNPAPIPluginInstance *aInstance,
nsNPAPIPluginStreamListener *aListener);
nsresult OnFileAvailable(nsIFile* aFile);
nsresult ServeStreamAsFile(nsIRequest *request, nsISupports *ctxt);
nsNPAPIPluginInstance *GetPluginInstance() { return mPluginInstance; }
nsresult RequestRead(NPByteRange* rangeList);
nsresult GetLength(uint32_t* result);
nsresult GetURL(const char** result);
nsresult GetLastModified(uint32_t* result);
nsresult IsSeekable(bool* result);
nsresult GetContentType(char** result);
nsresult GetStreamOffset(int32_t* result);
nsresult SetStreamOffset(int32_t value);
void TrackRequest(nsIRequest* request)
{
mRequests.AppendObject(request);
}
void ReplaceRequest(nsIRequest* oldRequest, nsIRequest* newRequest)
{
int32_t i = mRequests.IndexOfObject(oldRequest);
if (i == -1) {
NS_ASSERTION(mRequests.Count() == 0,
"Only our initial stream should be unknown!");
mRequests.AppendObject(oldRequest);
}
else {
mRequests.ReplaceObjectAt(newRequest, i);
}
}
void CancelRequests(nsresult status)
{
// Copy the array to avoid modification during the loop.
nsCOMArray<nsIRequest> requestsCopy(mRequests);
for (int32_t i = 0; i < requestsCopy.Count(); ++i)
requestsCopy[i]->Cancel(status);
}
void SuspendRequests() {
nsCOMArray<nsIRequest> requestsCopy(mRequests);
for (int32_t i = 0; i < requestsCopy.Count(); ++i)
requestsCopy[i]->Suspend();
}
void ResumeRequests() {
nsCOMArray<nsIRequest> requestsCopy(mRequests);
for (int32_t i = 0; i < requestsCopy.Count(); ++i)
requestsCopy[i]->Resume();
}
// Called by nsNPAPIPluginStreamListener
void OnStreamTypeSet(const int32_t aStreamType);
enum {
STREAM_TYPE_UNKNOWN = UINT16_MAX
};
private:
nsresult SetUpStreamListener(nsIRequest* request, nsIURI* aURL);
nsresult SetupPluginCacheFile(nsIChannel* channel);
nsresult GetInterfaceGlobal(const nsIID& aIID, void** result);
nsCOMPtr<nsIURI> mURL;
nsCString mURLSpec; // Have to keep this member because GetURL hands out char*
RefPtr<nsNPAPIPluginStreamListener> mPStreamListener;
// Set to true if we request failed (like with a HTTP response of 404)
bool mRequestFailed;
/*
* Set to true after nsNPAPIPluginStreamListener::OnStartBinding() has
* been called. Checked in ::OnStopRequest so we can call the
* plugin's OnStartBinding if, for some reason, it has not already
* been called.
*/
bool mStartBinding;
bool mHaveFiredOnStartRequest;
// these get passed to the plugin stream listener
uint32_t mLength;
int32_t mStreamType;
// local cached file, we save the content into local cache if browser cache is not available,
// or plugin asks stream as file and it expects file extension until bug 90558 got fixed
RefPtr<CachedFileHolder> mLocalCachedFileHolder;
nsCOMPtr<nsIOutputStream> mFileCacheOutputStream;
nsDataHashtable<nsUint32HashKey, uint32_t>* mDataForwardToRequest;
nsCString mContentType;
bool mUseLocalCache;
nsCOMPtr<nsIRequest> mRequest;
bool mSeekable;
uint32_t mModified;
RefPtr<nsNPAPIPluginInstance> mPluginInstance;
int32_t mStreamOffset;
bool mStreamComplete;
public:
bool mAbort;
int32_t mPendingRequests;
nsWeakPtr mWeakPtrChannelCallbacks;
nsWeakPtr mWeakPtrChannelLoadGroup;
nsCOMArray<nsIRequest> mRequests;
};
#endif // nsPluginStreamListenerPeer_h_
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