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
2025-08-10 01:59:31 +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/LibWeb/Crypto/Crypto.cpp
+++ b/Libraries/LibWeb/Crypto/Crypto.cpp
@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
+ * Copyright (c) 2022, stelar7 <dudedbz@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Random.h>
+#include <AK/StringBuilder.h>
+#include <LibJS/Runtime/TypedArray.h>
+#include <LibWeb/Bindings/CryptoPrototype.h>
+#include <LibWeb/Bindings/ExceptionOrUtils.h>
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Crypto/Crypto.h>
+#include <LibWeb/Crypto/SubtleCrypto.h>
+#include <LibWeb/WebIDL/Buffers.h>
+
+namespace Web::Crypto {
+
+JS_DEFINE_ALLOCATOR(Crypto);
+
+JS::NonnullGCPtr<Crypto> Crypto::create(JS::Realm& realm)
+{
+    return realm.heap().allocate<Crypto>(realm, realm);
+}
+
+Crypto::Crypto(JS::Realm& realm)
+    : PlatformObject(realm)
+{
+}
+
+Crypto::~Crypto() = default;
+
+void Crypto::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Crypto);
+    m_subtle = SubtleCrypto::create(realm);
+}
+
+JS::NonnullGCPtr<SubtleCrypto> Crypto::subtle() const
+{
+    return *m_subtle;
+}
+
+// https://w3c.github.io/webcrypto/#dfn-Crypto-method-getRandomValues
+WebIDL::ExceptionOr<JS::Handle<WebIDL::ArrayBufferView>> Crypto::get_random_values(JS::Handle<WebIDL::ArrayBufferView> array) const
+{
+    // 1. If array is not an Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array, then throw a TypeMismatchError and terminate the algorithm.
+    if (!array->is_typed_array_base())
+        return WebIDL::TypeMismatchError::create(realm(), "array must be one of Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array"_string);
+
+    auto const& typed_array = *array->bufferable_object().get<JS::NonnullGCPtr<JS::TypedArrayBase>>();
+    // Still need to exclude Float32Array, and potential future siblings like Float16Array:
+    if (!typed_array.element_name().is_one_of("Int8Array", "Uint8Array", "Uint8ClampedArray", "Int16Array", "Uint16Array", "Int32Array", "Uint32Array", "BigInt64Array", "BigUint64Array"))
+        return WebIDL::TypeMismatchError::create(realm(), "array must be one of Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array"_string);
+
+    auto typed_array_record = JS::make_typed_array_with_buffer_witness_record(typed_array, JS::ArrayBuffer::Order::SeqCst);
+
+    // IMPLEMENTATION DEFINED: If the viewed array buffer is out-of-bounds, throw a InvalidStateError and terminate the algorithm.
+    if (JS::is_typed_array_out_of_bounds(typed_array_record))
+        return WebIDL::InvalidStateError::create(realm(), MUST(String::formatted(JS::ErrorType::BufferOutOfBounds.message(), "TypedArray"sv)));
+
+    // 2. If the byteLength of array is greater than 65536, throw a QuotaExceededError and terminate the algorithm.
+    if (JS::typed_array_byte_length(typed_array_record) > 65536)
+        return WebIDL::QuotaExceededError::create(realm(), "array's byteLength may not be greater than 65536"_string);
+
+    // FIXME: Handle SharedArrayBuffers
+
+    // 3. Overwrite all elements of array with cryptographically strong random values of the appropriate type.
+    fill_with_random(array->viewed_array_buffer()->buffer());
+
+    // 4. Return array.
+    return array;
+}
+
+// https://w3c.github.io/webcrypto/#dfn-Crypto-method-randomUUID
+WebIDL::ExceptionOr<String> Crypto::random_uuid() const
+{
+    auto& vm = realm().vm();
+
+    return TRY_OR_THROW_OOM(vm, generate_random_uuid());
+}
+
+void Crypto::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_subtle);
+}
+
+// https://w3c.github.io/webcrypto/#dfn-generate-a-random-uuid
+ErrorOr<String> generate_random_uuid()
+{
+    // 1. Let bytes be a byte sequence of length 16.
+    u8 bytes[16];
+
+    // 2. Fill bytes with cryptographically secure random bytes.
+    fill_with_random(bytes);
+
+    // 3. Set the 4 most significant bits of bytes[6], which represent the UUID version, to 0100.
+    bytes[6] &= ~(1 << 7);
+    bytes[6] |= 1 << 6;
+    bytes[6] &= ~(1 << 5);
+    bytes[6] &= ~(1 << 4);
+
+    // 4. Set the 2 most significant bits of bytes[8], which represent the UUID variant, to 10.
+    bytes[8] |= 1 << 7;
+    bytes[8] &= ~(1 << 6);
+
+    /* 5. Return the string concatenation of
+        «
+        hexadecimal representation of bytes[0],
+        hexadecimal representation of bytes[1],
+        hexadecimal representation of bytes[2],
+        hexadecimal representation of bytes[3],
+        "-",
+        hexadecimal representation of bytes[4],
+        hexadecimal representation of bytes[5],
+        "-",
+        hexadecimal representation of bytes[6],
+        hexadecimal representation of bytes[7],
+        "-",
+        hexadecimal representation of bytes[8],
+        hexadecimal representation of bytes[9],
+        "-",
+        hexadecimal representation of bytes[10],
+        hexadecimal representation of bytes[11],
+        hexadecimal representation of bytes[12],
+        hexadecimal representation of bytes[13],
+        hexadecimal representation of bytes[14],
+        hexadecimal representation of bytes[15]
+        ».
+        */
+    StringBuilder builder;
+    TRY(builder.try_appendff("{:02x}{:02x}{:02x}{:02x}-", bytes[0], bytes[1], bytes[2], bytes[3]));
+    TRY(builder.try_appendff("{:02x}{:02x}-", bytes[4], bytes[5]));
+    TRY(builder.try_appendff("{:02x}{:02x}-", bytes[6], bytes[7]));
+    TRY(builder.try_appendff("{:02x}{:02x}-", bytes[8], bytes[9]));
+    TRY(builder.try_appendff("{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}", bytes[10], bytes[11], bytes[12], bytes[13], bytes[14], bytes[15]));
+
+    return builder.to_string();
+}
+
+}