| /* |
| ** |
| ** Copyright 2016, 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. |
| */ |
| |
| #ifndef KEYSTORE_KEYSTORE_AIDL_HIDL_MARSHALLING_UTILS_H_ |
| #define KEYSTORE_KEYSTORE_AIDL_HIDL_MARSHALLING_UTILS_H_ |
| |
| #include <utility> |
| |
| #include <binder/Parcel.h> |
| |
| #include <keystore/keymaster_types.h> |
| |
| namespace keystore { |
| |
| template <typename Fn, typename... Args> |
| inline auto nullable(Fn fn, const android::Parcel& in, Args&&... args) |
| -> NullOr<decltype(fn(in, std::forward<Args>(args)...))> { |
| if (in.readInt32() != 1) { |
| return {}; |
| } |
| |
| return fn(in, std::forward<Args>(args)...); |
| } |
| template <typename Fn, typename Arg> |
| inline android::status_t nullable(Fn fn, const NullOr<Arg>& arg, android::Parcel* out) { |
| if (!arg.isOk()) { |
| return out->writeInt32(0); |
| } |
| auto rc = out->writeInt32(1); |
| if (rc != ::android::OK) return rc; |
| |
| return fn(arg.value(), out); |
| } |
| template <typename Fn, typename Arg> |
| inline android::status_t nullable(Fn fn, Arg&& arg, android::Parcel* out) { |
| auto rc = out->writeInt32(1); |
| if (rc != ::android::OK) return rc; |
| |
| return fn(std::forward<Arg>(arg), out); |
| } |
| |
| inline android::status_t nullable(android::Parcel* out) { |
| return out->writeInt32(0); |
| } |
| |
| /** |
| * makes a copy only if inPlace is false |
| */ |
| hidl_vec<uint8_t> readKeymasterBlob(const android::Parcel& in); |
| android::status_t writeKeymasterBlob(const hidl_vec<uint8_t>& blob, android::Parcel* out); |
| |
| NullOr<hidl_vec<uint8_t>> readBlobAsByteArray(const android::Parcel& in, bool inPlace = true); |
| android::status_t writeBlobAsByteArray(const NullOr<const hidl_vec<uint8_t>&>& blob, |
| android::Parcel* out); |
| |
| NullOr<KeyParameter> readKeyParameterFromParcel(const android::Parcel& in); |
| android::status_t writeKeyParameterToParcel(const KeyParameter& param, android::Parcel* out); |
| |
| hidl_vec<KeyParameter> readParamSetFromParcel(const android::Parcel& in); |
| android::status_t writeParamSetToParcel(const hidl_vec<KeyParameter>& params, android::Parcel* out); |
| |
| hidl_vec<hidl_vec<uint8_t>> readCertificateChainFromParcel(const android::Parcel& in); |
| } |
| |
| #endif // KEYSTORE_KEYSTORE_AIDL_HIDL_MARSHALLING_UTILS_H_ |