57d088517c
* feat: add support for validating asar archives on macOS * chore: fix lint * chore: update as per feedback * feat: switch implementation to asar integrity hash checks * feat: make ranged requests work with the asar file validator DataSourceFilter * chore: fix lint * chore: fix missing log include on non-darwin * fix: do not pull block size out of missing optional * fix: match ValidateOrDie symbol on non-darwin * chore: fix up asar specs by repacking archives * fix: maintain integrity chain, do not load file integrity if header integrity was not loaded * debug test * Update node-spec.ts * fix: initialize header_validated_ * chore: update PR per feedback * chore: update per feedback * build: use final asar module * Update fuses.json5
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
// Copyright (c) 2021 Slack Technologies, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef SHELL_BROWSER_NET_ASAR_ASAR_FILE_VALIDATOR_H_
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#define SHELL_BROWSER_NET_ASAR_ASAR_FILE_VALIDATOR_H_
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#include <algorithm>
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#include <memory>
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#include "crypto/secure_hash.h"
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#include "mojo/public/cpp/system/file_data_source.h"
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#include "mojo/public/cpp/system/filtered_data_source.h"
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#include "shell/common/asar/archive.h"
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#include "third_party/abseil-cpp/absl/types/optional.h"
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namespace asar {
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class AsarFileValidator : public mojo::FilteredDataSource::Filter {
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public:
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AsarFileValidator(IntegrityPayload integrity, base::File file);
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void OnRead(base::span<char> buffer,
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mojo::FileDataSource::ReadResult* result);
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void OnDone();
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void SetRange(uint64_t read_start, uint64_t extra_read, uint64_t read_max);
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void SetCurrentBlock(int current_block);
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protected:
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bool FinishBlock();
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private:
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base::File file_;
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IntegrityPayload integrity_;
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// The offset in the file_ that the underlying file reader is starting at
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uint64_t read_start_ = 0;
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// The number of bytes this DataSourceFilter will have seen that aren't used
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// by the DataProducer. These extra bytes are exclusively for hash validation
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// but we need to know how many we've used so we know when we're done.
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uint64_t extra_read_ = 0;
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// The maximum offset in the file_ that we should read to, used to determine
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// which bytes we're missing or if we need to read up to a block boundary in
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// OnDone
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uint64_t read_max_ = 0;
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bool done_reading_ = false;
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int current_block_;
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int max_block_;
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uint64_t current_hash_byte_count_ = 0;
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uint64_t total_hash_byte_count_ = 0;
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std::unique_ptr<crypto::SecureHash> current_hash_;
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DISALLOW_COPY_AND_ASSIGN(AsarFileValidator);
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};
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} // namespace asar
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#endif // SHELL_BROWSER_NET_ASAR_ASAR_FILE_VALIDATOR_H_
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