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@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 
CryptoFactory()30     CryptoFactory::CryptoFactory() :
31         loader(getDrmPluginPath(), "createCryptoFactory") {
32     }
33 
34     // Methods from ::android::hardware::drm::V1_0::ICryptoFactory follow.
isCryptoSchemeSupported(const hidl_array<uint8_t,16> & uuid)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 
createPlugin(const hidl_array<uint8_t,16> & uuid,const hidl_vec<uint8_t> & initData,createPlugin_cb _hidl_cb)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 
HIDL_FETCH_ICryptoFactory(const char *)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