Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89 Commit: 93712b24bf Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256 Reviewed-by: https://github.com/sideshowbarker
2025-09-26 19:28:59 +00:00 · 2024-11-09 12:25:08 -05:00 · 2024-11-09 12:25:08 -05:00 · 93712b24bf · 2024-11-10 11:51:52 +00:00
commit 93712b24bf
parent 950e819ee7
4547 changed files with 104 additions and 113 deletions
--- a/Libraries/LibCrypto/Hash/HashManager.h
+++ b/Libraries/LibCrypto/Hash/HashManager.h
@ -0,0 +1,232 @@
+/*
+ * Copyright (c) 2020, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Optional.h>
+#include <AK/OwnPtr.h>
+#include <AK/Variant.h>
+#include <LibCrypto/Hash/BLAKE2b.h>
+#include <LibCrypto/Hash/HashFunction.h>
+#include <LibCrypto/Hash/MD5.h>
+#include <LibCrypto/Hash/SHA1.h>
+#include <LibCrypto/Hash/SHA2.h>
+
+namespace Crypto::Hash {
+
+enum class HashKind {
+    Unknown,
+    None,
+    BLAKE2b,
+    MD5,
+    SHA1,
+    SHA256,
+    SHA384,
+    SHA512,
+};
+
+struct MultiHashDigestVariant {
+    constexpr static size_t Size = 0;
+
+    MultiHashDigestVariant(Empty digest)
+        : m_digest(move(digest))
+    {
+    }
+
+    MultiHashDigestVariant(MD5::DigestType digest)
+        : m_digest(move(digest))
+    {
+    }
+
+    MultiHashDigestVariant(SHA1::DigestType digest)
+        : m_digest(move(digest))
+    {
+    }
+
+    MultiHashDigestVariant(SHA256::DigestType digest)
+        : m_digest(move(digest))
+    {
+    }
+
+    MultiHashDigestVariant(SHA384::DigestType digest)
+        : m_digest(move(digest))
+    {
+    }
+
+    MultiHashDigestVariant(SHA512::DigestType digest)
+        : m_digest(move(digest))
+    {
+    }
+
+    [[nodiscard]] u8 const* immutable_data() const
+    {
+        return m_digest.visit(
+            [&](Empty const&) -> u8 const* { VERIFY_NOT_REACHED(); },
+            [&](auto const& value) { return value.immutable_data(); });
+    }
+
+    [[nodiscard]] size_t data_length() const
+    {
+        return m_digest.visit(
+            [&](Empty const&) -> size_t { VERIFY_NOT_REACHED(); },
+            [&](auto const& value) { return value.data_length(); });
+    }
+
+    [[nodiscard]] ReadonlyBytes bytes() const
+    {
+        return m_digest.visit(
+            [&](Empty const&) -> ReadonlyBytes { VERIFY_NOT_REACHED(); },
+            [&](auto const& value) { return value.bytes(); });
+    }
+
+    using DigestVariant = Variant<Empty, MD5::DigestType, SHA1::DigestType, SHA256::DigestType, SHA384::DigestType, SHA512::DigestType>;
+    DigestVariant m_digest {};
+};
+
+class Manager final : public HashFunction<0, 0, MultiHashDigestVariant> {
+public:
+    using HashFunction::update;
+
+    Manager()
+    {
+        m_pre_init_buffer = ByteBuffer();
+    }
+
+    Manager(Manager const& other) // NOT a copy constructor!
+    {
+        m_pre_init_buffer = ByteBuffer(); // will not be used
+        initialize(other.m_kind);
+    }
+
+    Manager(HashKind kind)
+    {
+        m_pre_init_buffer = ByteBuffer();
+        initialize(kind);
+    }
+
+    ~Manager()
+    {
+        m_algorithm = Empty {};
+    }
+
+    inline size_t digest_size() const
+    {
+        return m_algorithm.visit(
+            [&](Empty const&) -> size_t { return 0; },
+            [&](auto const& hash) { return hash.digest_size(); });
+    }
+
+    inline size_t block_size() const
+    {
+        return m_algorithm.visit(
+            [&](Empty const&) -> size_t { return 0; },
+            [&](auto const& hash) { return hash.block_size(); });
+    }
+
+    inline void initialize(HashKind kind)
+    {
+        if (!m_algorithm.has<Empty>()) {
+            VERIFY_NOT_REACHED();
+        }
+
+        m_kind = kind;
+        switch (kind) {
+        case HashKind::BLAKE2b:
+            m_algorithm = BLAKE2b();
+            break;
+        case HashKind::MD5:
+            m_algorithm = MD5();
+            break;
+        case HashKind::SHA1:
+            m_algorithm = SHA1();
+            break;
+        case HashKind::SHA256:
+            m_algorithm = SHA256();
+            break;
+        case HashKind::SHA384:
+            m_algorithm = SHA384();
+            break;
+        case HashKind::SHA512:
+            m_algorithm = SHA512();
+            break;
+        default:
+        case HashKind::None:
+            m_algorithm = Empty {};
+            break;
+        }
+    }
+
+    virtual void update(u8 const* data, size_t length) override
+    {
+        auto size = m_pre_init_buffer.size();
+        if (size) {
+            m_algorithm.visit(
+                [&](Empty&) {},
+                [&](auto& hash) { hash.update(m_pre_init_buffer); });
+        }
+        m_algorithm.visit(
+            [&](Empty&) { m_pre_init_buffer.append(data, length); },
+            [&](auto& hash) { hash.update(data, length); });
+        if (size && m_kind != HashKind::None)
+            m_pre_init_buffer.clear();
+    }
+
+    virtual DigestType peek() override
+    {
+        return m_algorithm.visit(
+            [&](Empty&) -> DigestType { VERIFY_NOT_REACHED(); },
+            [&](auto& hash) -> DigestType { return hash.peek(); });
+    }
+
+    virtual DigestType digest() override
+    {
+        auto digest = peek();
+        reset();
+        return digest;
+    }
+
+    virtual void reset() override
+    {
+        m_pre_init_buffer.clear();
+        m_algorithm.visit(
+            [&](Empty&) {},
+            [&](auto& hash) { hash.reset(); });
+    }
+
+    virtual ByteString class_name() const override
+    {
+        return m_algorithm.visit(
+            [&](Empty const&) -> ByteString { return "UninitializedHashManager"; },
+            [&](auto const& hash) { return hash.class_name(); });
+    }
+
+    inline HashKind kind() const
+    {
+        return m_kind;
+    }
+
+    inline bool is(HashKind kind) const
+    {
+        return m_kind == kind;
+    }
+
+    inline Manager copy() const
+    {
+        Manager result;
+        result.m_algorithm = m_algorithm;
+        result.m_kind = m_kind;
+        result.m_pre_init_buffer = m_pre_init_buffer;
+        return result;
+    }
+
+private:
+    using AlgorithmVariant = Variant<Empty, BLAKE2b, MD5, SHA1, SHA256, SHA384, SHA512>;
+    AlgorithmVariant m_algorithm {};
+    HashKind m_kind { HashKind::None };
+    ByteBuffer m_pre_init_buffer;
+};
+
+}