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75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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_SRICheck_h
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#define mozilla_dom_SRICheck_h
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#include "mozilla/CORSMode.h"
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#include "nsCOMPtr.h"
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#include "nsICryptoHash.h"
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#include "SRIMetadata.h"
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class nsIChannel;
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class nsIDocument;
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class nsIUnicharStreamLoader;
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namespace mozilla {
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namespace dom {
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class SRICheck final
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{
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public:
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static const uint32_t MAX_METADATA_LENGTH = 24*1024;
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static const uint32_t MAX_METADATA_TOKENS = 512;
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/**
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* Parse the multiple hashes specified in the integrity attribute and
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* return the strongest supported hash.
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*/
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static nsresult IntegrityMetadata(const nsAString& aMetadataList,
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const nsIDocument* aDocument,
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SRIMetadata* outMetadata);
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/**
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* Process the integrity attribute of the element. A result of false
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* must prevent the resource from loading.
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*/
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static nsresult VerifyIntegrity(const SRIMetadata& aMetadata,
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nsIUnicharStreamLoader* aLoader,
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const CORSMode aCORSMode,
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const nsAString& aString,
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const nsIDocument* aDocument);
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};
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class SRICheckDataVerifier final
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{
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public:
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SRICheckDataVerifier(const SRIMetadata& aMetadata,
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const nsIDocument* aDocument);
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nsresult Update(uint32_t aStringLen, const uint8_t* aString);
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nsresult Verify(const SRIMetadata& aMetadata, nsIChannel* aChannel,
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const CORSMode aCORSMode, const nsIDocument* aDocument);
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private:
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nsCOMPtr<nsICryptoHash> mCryptoHash;
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nsAutoCString mComputedHash;
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size_t mBytesHashed;
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int8_t mHashType;
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bool mInvalidMetadata;
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bool mComplete;
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nsresult EnsureCryptoHash();
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nsresult Finish();
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nsresult VerifyHash(const SRIMetadata& aMetadata, uint32_t aHashIndex,
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const nsIDocument* aDocument);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_SRICheck_h
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