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62 changes: 62 additions & 0 deletions
62
components/brave_component_updater/browser/component_contents_accessor.cc
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,62 @@ | ||
| // Copyright (c) 2024 The Brave Authors. All rights reserved. | ||
| // 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 https://mozilla.org/MPL/2.0/. | ||
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| #include "brave/components/brave_component_updater/browser/component_contents_accessor.h" | ||
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| #include <utility> | ||
| #include <vector> | ||
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| #include "base/files/file_util.h" | ||
| #include "brave/components/brave_component_updater/browser/component_contents_verifier.h" | ||
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| namespace component_updater { | ||
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| ComponentContentsAccessor::ComponentContentsAccessor( | ||
| const base::FilePath& component_root) | ||
| : component_root_(component_root), | ||
| verifier_(CreateContentsVerifier(component_root)) {} | ||
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| ComponentContentsAccessor::~ComponentContentsAccessor() = default; | ||
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| // static | ||
| scoped_refptr<ComponentContentsAccessor> ComponentContentsAccessor::Create( | ||
| const base::FilePath& component_root) { | ||
| return base::WrapRefCounted(new ComponentContentsAccessor(component_root)); | ||
| } | ||
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| const base::FilePath& ComponentContentsAccessor::GetComponentRoot() const { | ||
| return component_root_; | ||
| } | ||
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| std::optional<std::string> ComponentContentsAccessor::GetFileAsString( | ||
| const base::FilePath& relative_path) { | ||
| std::string contents; | ||
| if (!base::ReadFileToString(GetComponentRoot().Append(relative_path), | ||
| &contents)) { | ||
| return std::nullopt; | ||
| } | ||
| if (verifier_ && | ||
| !verifier_->VerifyContents(relative_path, base::as_byte_span(contents))) { | ||
| return std::nullopt; | ||
| } | ||
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| return contents; | ||
| } | ||
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| std::optional<std::vector<uint8_t>> ComponentContentsAccessor::GetFileAsBytes( | ||
| const base::FilePath& relative_path) { | ||
| auto contents = | ||
| base::ReadFileToBytes(GetComponentRoot().Append(relative_path)); | ||
| if (!contents) { | ||
| return std::nullopt; | ||
| } | ||
| if (!verifier_->VerifyContents(relative_path, | ||
| base::as_byte_span(*contents))) { | ||
| return std::nullopt; | ||
| } | ||
| return std::move(*contents); | ||
| } | ||
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| } // namespace component_updater |
50 changes: 50 additions & 0 deletions
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components/brave_component_updater/browser/component_contents_accessor.h
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,50 @@ | ||
| // Copyright (c) 2024 The Brave Authors. All rights reserved. | ||
| // 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 https://mozilla.org/MPL/2.0/. | ||
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| #ifndef BRAVE_COMPONENTS_BRAVE_COMPONENT_UPDATER_BROWSER_COMPONENT_CONTENTS_ACCESSOR_H_ | ||
| #define BRAVE_COMPONENTS_BRAVE_COMPONENT_UPDATER_BROWSER_COMPONENT_CONTENTS_ACCESSOR_H_ | ||
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| #include <memory> | ||
| #include <optional> | ||
| #include <string> | ||
| #include <vector> | ||
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| #include "base/files/file_path.h" | ||
| #include "base/memory/ref_counted.h" | ||
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| namespace component_updater { | ||
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| // Use on MAY_BLOCK sequence. | ||
| class ComponentContentsAccessor | ||
| : public base::RefCountedThreadSafe<ComponentContentsAccessor> { | ||
| public: | ||
| ComponentContentsAccessor(const ComponentContentsAccessor&) = delete; | ||
| ComponentContentsAccessor(ComponentContentsAccessor&&) = delete; | ||
| ComponentContentsAccessor& operator=(const ComponentContentsAccessor&) = | ||
| delete; | ||
| ComponentContentsAccessor& operator=(ComponentContentsAccessor&&) = delete; | ||
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| static scoped_refptr<ComponentContentsAccessor> Create( | ||
| const base::FilePath& component_root); | ||
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| const base::FilePath& GetComponentRoot() const; | ||
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| std::optional<std::string> GetFileAsString( | ||
| const base::FilePath& relative_path); | ||
| std::optional<std::vector<uint8_t>> GetFileAsBytes( | ||
| const base::FilePath& relative_path); | ||
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| private: | ||
| friend class base::RefCountedThreadSafe<ComponentContentsAccessor>; | ||
| explicit ComponentContentsAccessor(const base::FilePath& component_root); | ||
| ~ComponentContentsAccessor(); | ||
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| const base::FilePath component_root_; | ||
| const std::unique_ptr<class ContentsVerifier> verifier_; | ||
| }; | ||
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| } // namespace component_updater | ||
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| #endif // BRAVE_COMPONENTS_BRAVE_COMPONENT_UPDATER_BROWSER_COMPONENT_CONTENTS_ACCESSOR_H_ |
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