blob: 1d1de4d96c624d669cf9c453de91b223ef5683ee (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* Copyright (C) 2018 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 "apex_manifest.h"
#include <android-base/file.h>
#include <android-base/logging.h>
#include "string_log.h"
#include <google/protobuf/util/json_util.h>
#include <google/protobuf/util/type_resolver_util.h>
#include <memory>
#include <string>
using android::base::Error;
using android::base::Result;
using google::protobuf::DescriptorPool;
using google::protobuf::util::NewTypeResolverForDescriptorPool;
using google::protobuf::util::TypeResolver;
namespace android {
namespace apex {
namespace {
const char kTypeUrlPrefix[] = "type.googleapis.com";
std::string GetTypeUrl(const ApexManifest& apex_manifest) {
const google::protobuf::Descriptor* message = apex_manifest.GetDescriptor();
return std::string(kTypeUrlPrefix) + "/" + message->full_name();
}
// TODO: JsonStringToMessage is a newly added function in protobuf
// and is not yet available in the android tree. Replace this function with
// https://developers.google.com/protocol-buffers/docs/reference/cpp/
// google.protobuf.util.json_util#JsonStringToMessage.details
// as and when the android tree gets updated
Result<void> JsonToApexManifestMessage(const std::string& content,
ApexManifest* apex_manifest) {
std::unique_ptr<TypeResolver> resolver(NewTypeResolverForDescriptorPool(
kTypeUrlPrefix, DescriptorPool::generated_pool()));
std::string binary;
auto parse_status = JsonToBinaryString(
resolver.get(), GetTypeUrl(*apex_manifest), content, &binary);
if (!parse_status.ok()) {
return Error() << "Failed to parse APEX Manifest JSON config: "
<< parse_status.error_message().as_string();
}
if (!apex_manifest->ParseFromString(binary)) {
return Error() << "Unexpected fields in APEX Manifest JSON config";
}
return {};
}
} // namespace
Result<ApexManifest> ParseManifest(const std::string& content) {
ApexManifest apex_manifest;
std::string err;
Result<void> parse_manifest_status =
JsonToApexManifestMessage(content, &apex_manifest);
if (!parse_manifest_status) {
return parse_manifest_status.error();
}
// Verifying required fields.
// name
if (apex_manifest.name().empty()) {
return Error() << "Missing required field \"name\" from APEX manifest.";
}
// version
if (apex_manifest.version() == 0) {
return Error() << "Missing required field \"version\" from APEX manifest.";
}
return apex_manifest;
}
std::string GetPackageId(const ApexManifest& apexManifest) {
return apexManifest.name() + "@" + std::to_string(apexManifest.version());
}
Result<ApexManifest> ReadManifest(const std::string& path) {
std::string content;
if (!android::base::ReadFileToString(path, &content)) {
return Error() << "Failed to read manifest file: " << path;
}
return ParseManifest(content);
}
} // namespace apex
} // namespace android
|
