71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
//
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// Copyright 2019 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef UPDATE_ENGINE_PAYLOAD_GENERATOR_PAYLOAD_PROPERTIES_H_
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#define UPDATE_ENGINE_PAYLOAD_GENERATOR_PAYLOAD_PROPERTIES_H_
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#include <string>
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#include <brillo/key_value_store.h>
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#include <brillo/secure_blob.h>
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namespace chromeos_update_engine {
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// A class for extracting information about a payload from the payload file
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// itself. Currently the metadata can be exported as a json file or a key/value
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// properties file. But more can be added if required.
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class PayloadProperties {
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public:
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explicit PayloadProperties(const std::string& payload_path);
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~PayloadProperties() = default;
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// Get the properties in a json format. The json file will be used in
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// autotests, cros flash, etc. Mainly in Chrome OS.
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bool GetPropertiesAsJson(std::string* json_str);
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// Get the properties of the payload as a key/value store. This is mainly used
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// in Android.
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bool GetPropertiesAsKeyValue(std::string* key_value_str);
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private:
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// Does the main job of reading the payload and extracting information from
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// it.
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bool LoadFromPayload();
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// The path to the payload file.
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std::string payload_path_;
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// The version of the metadata json format. If the output json file changes
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// format, this needs to be increased.
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int version_{2};
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size_t metadata_size_;
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std::string metadata_hash_;
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std::string metadata_signatures_;
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size_t payload_size_;
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std::string payload_hash_;
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// Whether the payload is a delta (true) or full (false).
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bool is_delta_;
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DISALLOW_COPY_AND_ASSIGN(PayloadProperties);
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};
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} // namespace chromeos_update_engine
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#endif // UPDATE_ENGINE_PAYLOAD_GENERATOR_PAYLOAD_PROPERTIES_H_
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