/* -*- 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 mozilla_dom_ContentVerifier_h #define mozilla_dom_ContentVerifier_h #include "nsCOMPtr.h" #include "nsIContentSignatureVerifier.h" #include "nsIObserver.h" #include "nsIStreamListener.h" #include "nsString.h" #include "nsTArray.h" /** * Mediator intercepting OnStartRequest in nsHttpChannel, blocks until all * data is read from the input stream, verifies the content signature and * releases the request to the next listener if the verification is successful. * If the verification fails or anything else goes wrong, a * NS_ERROR_INVALID_SIGNATURE is thrown. */ class ContentVerifier : public nsIStreamListener , public nsIContentSignatureReceiverCallback { public: NS_DECL_ISUPPORTS NS_DECL_NSISTREAMLISTENER NS_DECL_NSIREQUESTOBSERVER NS_DECL_NSICONTENTSIGNATURERECEIVERCALLBACK explicit ContentVerifier(nsIStreamListener* aMediatedListener, nsISupports* aMediatedContext) : mNextListener(aMediatedListener) , mContextCreated(false) , mContentRead(false) {} nsresult Init(const nsACString& aContentSignatureHeader, nsIRequest* aRequest, nsISupports* aContext); protected: virtual ~ContentVerifier() {} private: void FinishSignature(); // buffered content to verify FallibleTArray<nsCString> mContent; // content and next listener for nsIStreamListener nsCOMPtr<nsIStreamListener> mNextListener; // the verifier nsCOMPtr<nsIContentSignatureVerifier> mVerifier; // holding a pointer to the content request and context to resume/cancel it nsCOMPtr<nsIRequest> mContentRequest; nsCOMPtr<nsISupports> mContentContext; // Semaphors to indicate that the verifying context was created, the entire // content was read resp. The context gets created by ContentSignatureVerifier // and mContextCreated is set in the ContextCreated callback. The content is // read, i.e. mContentRead is set, when the content OnStopRequest is called. bool mContextCreated; bool mContentRead; }; #endif /* mozilla_dom_ContentVerifier_h */