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- /*
- **
- ** 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_
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