| /* Copyright 2017 The Android Open Source Project |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
| |
| #include <android/system/wifi/keystore/1.0/IKeystore.h> |
| #include <log/log.h> |
| |
| #include <keystore/keystore_get.h> |
| |
| using namespace android; |
| |
| using android::hardware::hidl_string; |
| using android::hardware::hidl_vec; |
| using android::hardware::Return; |
| using android::sp; |
| using android::system::wifi::keystore::V1_0::IKeystore; |
| |
| ssize_t keystore_get(const char *key, size_t keyLength, uint8_t** value) { |
| if (key == nullptr || keyLength == 0 || value == nullptr) { |
| ALOGE("Null pointer argument passed"); |
| return -1; |
| } |
| |
| sp<IKeystore> service = IKeystore::tryGetService(); |
| if (service == nullptr) { |
| ALOGE("could not contact keystore HAL"); |
| return -1; |
| } |
| |
| ssize_t return_size; |
| bool success = false; |
| auto cb = [&](IKeystore::KeystoreStatusCode status, hidl_vec<uint8_t> returnedValue) { |
| if (status == IKeystore::KeystoreStatusCode::SUCCESS) { |
| return_size = returnedValue.size(); |
| *value = returnedValue.releaseData(); |
| success = true; |
| } |
| }; |
| |
| Return<void> ret = service->getBlob(hidl_string(key, keyLength), cb); |
| return ret.isOk() && success ? return_size : -1; |
| } |