1 /*
2 * Copyright (C) 2014 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
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "ClearKeyCryptoPlugin"
19 #include <utils/Log.h>
20
21 #include <media/stagefright/MediaErrors.h>
22 #include <utils/StrongPointer.h>
23
24 #include "DrmPlugin.h"
25
26 #include "Session.h"
27
28 namespace clearkeydrm {
29
30 using android::sp;
31
openSession(Vector<uint8_t> & sessionId)32 status_t DrmPlugin::openSession(Vector<uint8_t>& sessionId) {
33 sp<Session> session = mSessionLibrary->createSession();
34 sessionId = session->sessionId();
35 return android::OK;
36 }
37
closeSession(const Vector<uint8_t> & sessionId)38 status_t DrmPlugin::closeSession(const Vector<uint8_t>& sessionId) {
39 sp<Session> session = mSessionLibrary->findSession(sessionId);
40 if (sessionId.size() == 0) {
41 return android::BAD_VALUE;
42 }
43 if (session.get()) {
44 mSessionLibrary->destroySession(session);
45 return android::OK;
46 }
47 return android::ERROR_DRM_SESSION_NOT_OPENED;
48 }
49
getKeyRequest(const Vector<uint8_t> & scope,const Vector<uint8_t> & initData,const String8 & mimeType,KeyType keyType,const KeyedVector<String8,String8> & optionalParameters,Vector<uint8_t> & request,String8 & defaultUrl,DrmPlugin::KeyRequestType * keyRequestType)50 status_t DrmPlugin::getKeyRequest(
51 const Vector<uint8_t>& scope,
52 const Vector<uint8_t>& initData,
53 const String8& mimeType,
54 KeyType keyType,
55 const KeyedVector<String8, String8>& optionalParameters,
56 Vector<uint8_t>& request,
57 String8& defaultUrl,
58 DrmPlugin::KeyRequestType *keyRequestType) {
59 UNUSED(optionalParameters);
60 if (scope.size() == 0) {
61 return android::BAD_VALUE;
62 }
63 if (keyType != kKeyType_Streaming) {
64 return android::ERROR_DRM_CANNOT_HANDLE;
65 }
66 *keyRequestType = DrmPlugin::kKeyRequestType_Initial;
67 defaultUrl.clear();
68 sp<Session> session = mSessionLibrary->findSession(scope);
69 if (!session.get()) {
70 return android::ERROR_DRM_SESSION_NOT_OPENED;
71 }
72 return session->getKeyRequest(initData, mimeType, &request);
73 }
74
provideKeyResponse(const Vector<uint8_t> & scope,const Vector<uint8_t> & response,Vector<uint8_t> & keySetId)75 status_t DrmPlugin::provideKeyResponse(
76 const Vector<uint8_t>& scope,
77 const Vector<uint8_t>& response,
78 Vector<uint8_t>& keySetId) {
79 if (scope.size() == 0 || response.size() == 0) {
80 return android::BAD_VALUE;
81 }
82 sp<Session> session = mSessionLibrary->findSession(scope);
83 if (!session.get()) {
84 return android::ERROR_DRM_SESSION_NOT_OPENED;
85 }
86 status_t res = session->provideKeyResponse(response);
87 if (res == android::OK) {
88 // This is for testing AMediaDrm_setOnEventListener only.
89 sendEvent(kDrmPluginEventVendorDefined, 0, &scope, NULL);
90 keySetId.clear();
91 }
92 return res;
93 }
94
getPropertyString(const String8 & name,String8 & value) const95 status_t DrmPlugin::getPropertyString(
96 const String8& name, String8& value) const {
97 if (name == "vendor") {
98 value = "Google";
99 } else if (name == "version") {
100 value = "1.0";
101 } else if (name == "description") {
102 value = "ClearKey CDM";
103 } else if (name == "algorithms") {
104 value = "";
105 } else if (name == "listenerTestSupport") {
106 value = "true";
107 } else {
108 ALOGE("App requested unknown string property %s", name.string());
109 return android::ERROR_DRM_CANNOT_HANDLE;
110 }
111 return android::OK;
112 }
113
114 } // namespace clearkeydrm
115