mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
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108 lines
4.3 KiB
C++
108 lines
4.3 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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#include <stratosphere/fssystem/fssystem_i_hash_256_generator.hpp>
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namespace ams::fssystem {
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/* ACCURATE_TO_VERSION: 14.3.0.0 */
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namespace impl {
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template<typename Traits>
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class ShaHashGenerator final : public ::ams::fssystem::IHash256Generator, public ::ams::fs::impl::Newable {
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static_assert(Traits::Generator::HashSize == IHash256Generator::HashSize);
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NON_COPYABLE(ShaHashGenerator);
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NON_MOVEABLE(ShaHashGenerator);
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private:
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Traits::Generator m_generator;
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public:
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ShaHashGenerator() = default;
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protected:
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virtual void DoInitialize() override {
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m_generator.Initialize();
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}
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virtual void DoUpdate(const void *data, size_t size) override {
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m_generator.Update(data, size);
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}
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virtual void DoGetHash(void *dst, size_t dst_size) override {
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m_generator.GetHash(dst, dst_size);
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}
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};
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template<typename Traits>
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class ShaHashGeneratorFactory final : public IHash256GeneratorFactory, public ::ams::fs::impl::Newable {
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static_assert(Traits::Generator::HashSize == IHash256Generator::HashSize);
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NON_COPYABLE(ShaHashGeneratorFactory);
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NON_MOVEABLE(ShaHashGeneratorFactory);
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public:
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constexpr ShaHashGeneratorFactory() = default;
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protected:
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virtual std::unique_ptr<IHash256Generator> DoCreate() override {
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return std::unique_ptr<IHash256Generator>(new ShaHashGenerator<Traits>());
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}
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virtual void DoGenerateHash(void *dst, size_t dst_size, const void *src, size_t src_size) override {
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Traits::Generate(dst, dst_size, src, src_size);
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}
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};
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struct Sha256Traits {
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using Generator = crypto::Sha256Generator;
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static ALWAYS_INLINE void Generate(void *dst, size_t dst_size, const void *src, size_t src_size) {
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return crypto::GenerateSha256(dst, dst_size, src, src_size);
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}
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};
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struct Sha3256Traits {
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using Generator = crypto::Sha3256Generator;
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static ALWAYS_INLINE void Generate(void *dst, size_t dst_size, const void *src, size_t src_size) {
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return crypto::GenerateSha3256(dst, dst_size, src, src_size);
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}
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};
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}
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using Sha256HashGenerator = impl::ShaHashGenerator<impl::Sha256Traits>;
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using Sha256HashGeneratorFactory = impl::ShaHashGeneratorFactory<impl::Sha256Traits>;
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using Sha3256HashGenerator = impl::ShaHashGenerator<impl::Sha3256Traits>;
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using Sha3256HashGeneratorFactory = impl::ShaHashGeneratorFactory<impl::Sha3256Traits>;
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class ShaHashGeneratorFactorySelector final : public IHash256GeneratorFactorySelector, public ::ams::fs::impl::Newable {
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NON_COPYABLE(ShaHashGeneratorFactorySelector);
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NON_MOVEABLE(ShaHashGeneratorFactorySelector);
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private:
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Sha256HashGeneratorFactory m_sha256_factory;
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Sha3256HashGeneratorFactory m_sha3_256_factory;
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public:
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constexpr ShaHashGeneratorFactorySelector() = default;
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protected:
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virtual IHash256GeneratorFactory *DoGetFactory(HashAlgorithmType alg) override {
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switch (alg) {
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case HashAlgorithmType_Sha2: return std::addressof(m_sha256_factory);
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case HashAlgorithmType_Sha3: return std::addressof(m_sha3_256_factory);
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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};
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}
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