1 /*
2 * Copyright (C) 2021 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "keystoreCommon.h"
18 #include <keystore/KeyAttestationApplicationId.h>
19
20 using ::security::keymaster::KeyAttestationApplicationId;
21
22 constexpr size_t kPackageVectorSizeMin = 1;
23 constexpr size_t kPackageVectorSizeMax = 10;
24
25 class KeystoreApplicationId {
26 public:
27 void process(const uint8_t* data, size_t size);
~KeystoreApplicationId()28 ~KeystoreApplicationId() {}
29
30 private:
31 void invokeApplicationId();
32 std::unique_ptr<FuzzedDataProvider> mFdp;
33 };
34
invokeApplicationId()35 void KeystoreApplicationId::invokeApplicationId() {
36 std::optional<KeyAttestationApplicationId> applicationId;
37 bool shouldUsePackageInfoVector = mFdp->ConsumeBool();
38 if (shouldUsePackageInfoVector) {
39 KeyAttestationApplicationId::PackageInfoVector packageInfoVector;
40 int32_t packageVectorSize =
41 mFdp->ConsumeIntegralInRange<int32_t>(kPackageVectorSizeMin, kPackageVectorSizeMax);
42 for (int32_t packageSize = 0; packageSize < packageVectorSize; ++packageSize) {
43 auto packageInfoData = initPackageInfoData(mFdp.get());
44 packageInfoVector.push_back(make_optional<KeyAttestationPackageInfo>(
45 String16((packageInfoData.packageName).c_str()), packageInfoData.versionCode,
46 packageInfoData.sharedSignaturesVector));
47 }
48 applicationId = KeyAttestationApplicationId(std::move(packageInfoVector));
49 } else {
50 auto packageInfoData = initPackageInfoData(mFdp.get());
51 applicationId = KeyAttestationApplicationId(make_optional<KeyAttestationPackageInfo>(
52 String16((packageInfoData.packageName).c_str()), packageInfoData.versionCode,
53 packageInfoData.sharedSignaturesVector));
54 }
55 invokeReadWriteParcel(&applicationId.value());
56 }
57
process(const uint8_t * data,size_t size)58 void KeystoreApplicationId::process(const uint8_t* data, size_t size) {
59 mFdp = std::make_unique<FuzzedDataProvider>(data, size);
60 invokeApplicationId();
61 }
62
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)63 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
64 KeystoreApplicationId keystoreApplicationId;
65 keystoreApplicationId.process(data, size);
66 return 0;
67 }
68