зеркало из https://github.com/mozilla/gecko-dev.git
65 строки
2.3 KiB
C++
65 строки
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ContentVerifier_h
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#define mozilla_dom_ContentVerifier_h
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#include "nsCOMPtr.h"
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#include "nsIContentSignatureVerifier.h"
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#include "nsIObserver.h"
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#include "nsIStreamListener.h"
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#include "nsString.h"
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#include "nsTArray.h"
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/**
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* Mediator intercepting OnStartRequest in nsHttpChannel, blocks until all
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* data is read from the input stream, verifies the content signature and
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* releases the request to the next listener if the verification is successful.
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* If the verification fails or anything else goes wrong, a
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* NS_ERROR_INVALID_SIGNATURE is thrown.
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*/
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class ContentVerifier : public nsIStreamListener
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, public nsIContentSignatureReceiverCallback
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSICONTENTSIGNATURERECEIVERCALLBACK
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explicit ContentVerifier(nsIStreamListener* aMediatedListener,
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nsISupports* aMediatedContext)
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: mNextListener(aMediatedListener)
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, mContextCreated(false)
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, mContentRead(false) {}
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nsresult Init(const nsACString& aContentSignatureHeader, nsIRequest* aRequest,
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nsISupports* aContext);
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protected:
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virtual ~ContentVerifier() {}
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private:
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void FinishSignature();
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// buffered content to verify
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FallibleTArray<nsCString> mContent;
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// content and next listener for nsIStreamListener
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nsCOMPtr<nsIStreamListener> mNextListener;
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// the verifier
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nsCOMPtr<nsIContentSignatureVerifier> mVerifier;
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// holding a pointer to the content request and context to resume/cancel it
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nsCOMPtr<nsIRequest> mContentRequest;
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nsCOMPtr<nsISupports> mContentContext;
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// Semaphors to indicate that the verifying context was created, the entire
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// content was read resp. The context gets created by ContentSignatureVerifier
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// and mContextCreated is set in the ContextCreated callback. The content is
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// read, i.e. mContentRead is set, when the content OnStopRequest is called.
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bool mContextCreated;
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bool mContentRead;
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};
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#endif /* mozilla_dom_ContentVerifier_h */
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