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//
// Copyright 2019 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "update_engine/payload_generator/payload_properties.h"
#include <algorithm>
#include <string>
#include <utility>
#include <vector>
#include <base/json/json_writer.h>
#include <base/strings/string_util.h>
#include <base/values.h>
#include <brillo/data_encoding.h>
#include "update_engine/common/constants.h"
#include "update_engine/common/hash_calculator.h"
#include "update_engine/common/utils.h"
#include "update_engine/payload_consumer/payload_metadata.h"
#include "update_engine/update_metadata.pb.h"
using std::string;
using std::vector;
namespace chromeos_update_engine {
namespace {
// These ones are needed by the GoldenEye.
const char kPayloadPropertyJsonVersion[] = "version";
const char kPayloadPropertyJsonPayloadHash[] = "sha256_hex";
const char kPayloadPropertyJsonMetadataSize[] = "metadata_size";
const char kPayloadPropertyJsonMetadataSignature[] = "metadata_signature";
// These are needed by the Nebraska and devserver.
const char kPayloadPropertyJsonPayloadSize[] = "size";
const char kPayloadPropertyJsonIsDelta[] = "is_delta";
// These are JSON specific properties to handle 64-bit sizes (> 53-bits).
const char kPayloadPropertyJsonMetadataSizeStr[] = "metadata_size_str";
const char kPayloadPropertyJsonPayloadSizeStr[] = "size_str";
} // namespace
PayloadProperties::PayloadProperties(const string& payload_path)
: payload_path_(payload_path) {}
bool PayloadProperties::GetPropertiesAsJson(string* json_str) {
TEST_AND_RETURN_FALSE(LoadFromPayload());
base::DictionaryValue properties;
properties.SetInteger(kPayloadPropertyJsonVersion, version_);
properties.SetInteger(kPayloadPropertyJsonMetadataSize, metadata_size_);
properties.SetString(kPayloadPropertyJsonMetadataSizeStr,
std::to_string(metadata_size_));
properties.SetString(kPayloadPropertyJsonMetadataSignature,
metadata_signatures_);
properties.SetInteger(kPayloadPropertyJsonPayloadSize, payload_size_);
properties.SetString(kPayloadPropertyJsonPayloadSizeStr,
std::to_string(payload_size_));
properties.SetString(kPayloadPropertyJsonPayloadHash, payload_hash_);
properties.SetBoolean(kPayloadPropertyJsonIsDelta, is_delta_);
return base::JSONWriter::Write(properties, json_str);
}
bool PayloadProperties::GetPropertiesAsKeyValue(string* key_value_str) {
TEST_AND_RETURN_FALSE(LoadFromPayload());
brillo::KeyValueStore properties;
properties.SetString(kPayloadPropertyFileSize, std::to_string(payload_size_));
properties.SetString(kPayloadPropertyMetadataSize,
std::to_string(metadata_size_));
properties.SetString(kPayloadPropertyFileHash, payload_hash_);
properties.SetString(kPayloadPropertyMetadataHash, metadata_hash_);
*key_value_str = properties.SaveToString();
return true;
}
bool PayloadProperties::LoadFromPayload() {
PayloadMetadata payload_metadata;
DeltaArchiveManifest manifest;
Signatures metadata_signatures;
TEST_AND_RETURN_FALSE(payload_metadata.ParsePayloadFile(
payload_path_, &manifest, &metadata_signatures));
metadata_size_ = payload_metadata.GetMetadataSize();
payload_size_ = utils::FileSize(payload_path_);
brillo::Blob metadata_hash;
TEST_AND_RETURN_FALSE(HashCalculator::RawHashOfFile(
payload_path_, metadata_size_, &metadata_hash) ==
static_cast<off_t>(metadata_size_));
metadata_hash_ = brillo::data_encoding::Base64Encode(metadata_hash);
brillo::Blob payload_hash;
TEST_AND_RETURN_FALSE(HashCalculator::RawHashOfFile(
payload_path_, payload_size_, &payload_hash) ==
static_cast<off_t>(payload_size_));
payload_hash_ = brillo::data_encoding::Base64Encode(payload_hash);
if (payload_metadata.GetMetadataSignatureSize() > 0) {
TEST_AND_RETURN_FALSE(metadata_signatures.signatures_size() > 0);
vector<string> base64_signatures;
for (const auto& sig : metadata_signatures.signatures()) {
base64_signatures.push_back(
brillo::data_encoding::Base64Encode(sig.data()));
}
metadata_signatures_ = base::JoinString(base64_signatures, ":");
}
is_delta_ = std::any_of(manifest.partitions().begin(),
manifest.partitions().end(),
[](const PartitionUpdate& part) {
return part.has_old_partition_info();
});
return true;
}
} // namespace chromeos_update_engine