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      1 /*
      2  * Copyright (C) 2016 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 #define LOG_TAG "android.hardware.drm (at) 1.0-impl"
     17 
     18 #include "CryptoFactory.h"
     19 #include <log/log.h>
     20 #include "CryptoPlugin.h"
     21 #include "LegacyPluginPath.h"
     22 #include "TypeConvert.h"
     23 
     24 namespace android {
     25 namespace hardware {
     26 namespace drm {
     27 namespace V1_0 {
     28 namespace implementation {
     29 
     30     CryptoFactory::CryptoFactory() :
     31         loader(getDrmPluginPath(), "createCryptoFactory") {
     32     }
     33 
     34     // Methods from ::android::hardware::drm::V1_0::ICryptoFactory follow.
     35     Return<bool> CryptoFactory::isCryptoSchemeSupported(
     36             const hidl_array<uint8_t, 16>& uuid) {
     37         for (size_t i = 0; i < loader.factoryCount(); i++) {
     38             if (loader.getFactory(i)->isCryptoSchemeSupported(uuid.data())) {
     39                 return true;
     40             }
     41         }
     42         return false;
     43     }
     44 
     45     Return<void> CryptoFactory::createPlugin(const hidl_array<uint8_t, 16>& uuid,
     46             const hidl_vec<uint8_t>& initData, createPlugin_cb _hidl_cb) {
     47         for (size_t i = 0; i < loader.factoryCount(); i++) {
     48             if (loader.getFactory(i)->isCryptoSchemeSupported(uuid.data())) {
     49                 android::CryptoPlugin *legacyPlugin = NULL;
     50                 status_t status = loader.getFactory(i)->createPlugin(uuid.data(),
     51                         initData.data(), initData.size(), &legacyPlugin);
     52                 CryptoPlugin *newPlugin = NULL;
     53                 if (legacyPlugin == NULL) {
     54                     ALOGE("Crypto legacy HAL: failed to create crypto plugin");
     55                 } else {
     56                     newPlugin = new CryptoPlugin(legacyPlugin);
     57                 }
     58                 _hidl_cb(toStatus(status), newPlugin);
     59                 return Void();
     60             }
     61         }
     62         _hidl_cb(Status::ERROR_DRM_CANNOT_HANDLE, NULL);
     63         return Void();
     64     }
     65 
     66     ICryptoFactory* HIDL_FETCH_ICryptoFactory(const char* /* name */) {
     67         return new CryptoFactory();
     68     }
     69 
     70 }  // namespace implementation
     71 }  // namespace V1_0
     72 }  // namespace drm
     73 }  // namespace hardware
     74 }  // namespace android
     75