/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* 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_SRIMetadata_h #define mozilla_dom_SRIMetadata_h #include "nsTArray.h" #include "nsString.h" #include "SRICheck.h" namespace mozilla { namespace dom { class SRIMetadata final { friend class SRICheck; public: static const uint32_t MAX_ALTERNATE_HASHES = 256; static const int8_t UNKNOWN_ALGORITHM = -1; /** * Create an empty metadata object. */ SRIMetadata() : mAlgorithmType(UNKNOWN_ALGORITHM), mEmpty(true) {} /** * Split a string token into the components of an SRI metadata * attribute. */ explicit SRIMetadata(const nsACString& aToken); /** * Returns true when this object's hash algorithm is weaker than the * other object's hash algorithm. */ bool operator<(const SRIMetadata& aOther) const; /** * Not implemented. Should not be used. */ bool operator>(const SRIMetadata& aOther) const; /** * Add another metadata's hash to this one. */ SRIMetadata& operator+=(const SRIMetadata& aOther); /** * Returns true when the two metadata use the same hash algorithm. */ bool operator==(const SRIMetadata& aOther) const; bool IsEmpty() const { return mEmpty; } bool IsMalformed() const { return mHashes.IsEmpty() || mAlgorithm.IsEmpty(); } bool IsAlgorithmSupported() const { return mAlgorithmType != UNKNOWN_ALGORITHM; } bool IsValid() const { return !IsMalformed() && IsAlgorithmSupported(); } uint32_t HashCount() const { return mHashes.Length(); } void GetHash(uint32_t aIndex, nsCString* outHash) const; void GetAlgorithm(nsCString* outAlg) const { *outAlg = mAlgorithm; } void GetHashType(int8_t* outType, uint32_t* outLength) const; const nsString& GetIntegrityString() const { return mIntegrityString; } private: nsTArray<nsCString> mHashes; nsString mIntegrityString; nsCString mAlgorithm; int8_t mAlgorithmType; bool mEmpty; }; } // namespace dom } // namespace mozilla #endif // mozilla_dom_SRIMetadata_h