1
2 /*
3 * Copyright (C) 2017 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "CasImpl"
19
20 #include <android/media/ICasListener.h>
21 #include <media/cas/CasAPI.h>
22 #include <media/CasImpl.h>
23 #include <media/SharedLibrary.h>
24 #include <utils/Log.h>
25
26 namespace android {
27
getBinderStatus(status_t err)28 static Status getBinderStatus(status_t err) {
29 if (err == OK) {
30 return Status::ok();
31 }
32 if (err == BAD_VALUE) {
33 return Status::fromExceptionCode(Status::EX_ILLEGAL_ARGUMENT);
34 }
35 if (err == INVALID_OPERATION) {
36 return Status::fromExceptionCode(Status::EX_ILLEGAL_STATE);
37 }
38 return Status::fromServiceSpecificError(err);
39 }
40
sessionIdToString(const CasSessionId & sessionId)41 static String8 sessionIdToString(const CasSessionId &sessionId) {
42 String8 result;
43 for (size_t i = 0; i < sessionId.size(); i++) {
44 result.appendFormat("%02x ", sessionId[i]);
45 }
46 if (result.isEmpty()) {
47 result.append("(null)");
48 }
49 return result;
50 }
51
52 struct CasImpl::PluginHolder : public RefBase {
53 public:
PluginHolderandroid::CasImpl::PluginHolder54 explicit PluginHolder(CasPlugin *plugin) : mPlugin(plugin) {}
~PluginHolderandroid::CasImpl::PluginHolder55 ~PluginHolder() { if (mPlugin != NULL) delete mPlugin; }
getandroid::CasImpl::PluginHolder56 CasPlugin* get() { return mPlugin; }
57
58 private:
59 CasPlugin *mPlugin;
60 DISALLOW_EVIL_CONSTRUCTORS(PluginHolder);
61 };
62
CasImpl(const sp<ICasListener> & listener)63 CasImpl::CasImpl(const sp<ICasListener> &listener)
64 : mPluginHolder(NULL), mListener(listener) {
65 ALOGV("CTOR");
66 }
67
~CasImpl()68 CasImpl::~CasImpl() {
69 ALOGV("DTOR");
70 release();
71 }
72
73 //static
OnEvent(void * appData,int32_t event,int32_t arg,uint8_t * data,size_t size)74 void CasImpl::OnEvent(
75 void *appData,
76 int32_t event,
77 int32_t arg,
78 uint8_t *data,
79 size_t size) {
80 if (appData == NULL) {
81 ALOGE("Invalid appData!");
82 return;
83 }
84 CasImpl *casImpl = static_cast<CasImpl *>(appData);
85 casImpl->onEvent(event, arg, data, size);
86 }
87
init(const sp<SharedLibrary> & library,CasPlugin * plugin)88 void CasImpl::init(const sp<SharedLibrary>& library, CasPlugin *plugin) {
89 mLibrary = library;
90 mPluginHolder = new PluginHolder(plugin);
91 }
92
onEvent(int32_t event,int32_t arg,uint8_t * data,size_t size)93 void CasImpl::onEvent(
94 int32_t event, int32_t arg, uint8_t *data, size_t size) {
95 if (mListener == NULL) {
96 return;
97 }
98
99 std::unique_ptr<CasData> eventData;
100 if (data != NULL && size > 0) {
101 eventData.reset(new CasData(data, data + size));
102 }
103
104 mListener->onEvent(event, arg, eventData);
105 }
106
setPrivateData(const CasData & pvtData)107 Status CasImpl::setPrivateData(const CasData& pvtData) {
108 ALOGV("setPrivateData");
109 sp<PluginHolder> holder = mPluginHolder;
110 if (holder == NULL) {
111 return getBinderStatus(INVALID_OPERATION);
112 }
113 return getBinderStatus(holder->get()->setPrivateData(pvtData));
114 }
115
openSession(CasSessionId * sessionId)116 Status CasImpl::openSession(CasSessionId* sessionId) {
117 ALOGV("openSession");
118 sp<PluginHolder> holder = mPluginHolder;
119 if (holder == NULL) {
120 return getBinderStatus(INVALID_OPERATION);
121 }
122 status_t err = holder->get()->openSession(sessionId);
123
124 ALOGV("openSession: session opened, sessionId=%s",
125 sessionIdToString(*sessionId).string());
126
127 return getBinderStatus(err);
128 }
129
setSessionPrivateData(const CasSessionId & sessionId,const CasData & pvtData)130 Status CasImpl::setSessionPrivateData(
131 const CasSessionId &sessionId, const CasData& pvtData) {
132 ALOGV("setSessionPrivateData: sessionId=%s",
133 sessionIdToString(sessionId).string());
134 sp<PluginHolder> holder = mPluginHolder;
135 if (holder == NULL) {
136 return getBinderStatus(INVALID_OPERATION);
137 }
138 return getBinderStatus(holder->get()->setSessionPrivateData(sessionId, pvtData));
139 }
140
closeSession(const CasSessionId & sessionId)141 Status CasImpl::closeSession(const CasSessionId &sessionId) {
142 ALOGV("closeSession: sessionId=%s",
143 sessionIdToString(sessionId).string());
144 sp<PluginHolder> holder = mPluginHolder;
145 if (holder == NULL) {
146 return getBinderStatus(INVALID_OPERATION);
147 }
148 return getBinderStatus(holder->get()->closeSession(sessionId));
149 }
150
processEcm(const CasSessionId & sessionId,const ParcelableCasData & ecm)151 Status CasImpl::processEcm(const CasSessionId &sessionId, const ParcelableCasData& ecm) {
152 ALOGV("processEcm: sessionId=%s",
153 sessionIdToString(sessionId).string());
154 sp<PluginHolder> holder = mPluginHolder;
155 if (holder == NULL) {
156 return getBinderStatus(INVALID_OPERATION);
157 }
158
159 return getBinderStatus(holder->get()->processEcm(sessionId, ecm));
160 }
161
processEmm(const ParcelableCasData & emm)162 Status CasImpl::processEmm(const ParcelableCasData& emm) {
163 ALOGV("processEmm");
164 sp<PluginHolder> holder = mPluginHolder;
165 if (holder == NULL) {
166 return getBinderStatus(INVALID_OPERATION);
167 }
168
169 return getBinderStatus(holder->get()->processEmm(emm));
170 }
171
sendEvent(int32_t event,int32_t arg,const::std::unique_ptr<CasData> & eventData)172 Status CasImpl::sendEvent(
173 int32_t event, int32_t arg, const ::std::unique_ptr<CasData> &eventData) {
174 ALOGV("sendEvent");
175 sp<PluginHolder> holder = mPluginHolder;
176 if (holder == NULL) {
177 return getBinderStatus(INVALID_OPERATION);
178 }
179
180 status_t err;
181 if (eventData == nullptr) {
182 err = holder->get()->sendEvent(event, arg, CasData());
183 } else {
184 err = holder->get()->sendEvent(event, arg, *eventData);
185 }
186 return getBinderStatus(err);
187 }
188
provision(const String16 & provisionString)189 Status CasImpl::provision(const String16& provisionString) {
190 ALOGV("provision: provisionString=%s", String8(provisionString).string());
191 sp<PluginHolder> holder = mPluginHolder;
192 if (holder == NULL) {
193 return getBinderStatus(INVALID_OPERATION);
194 }
195
196 return getBinderStatus(holder->get()->provision(String8(provisionString)));
197 }
198
refreshEntitlements(int32_t refreshType,const::std::unique_ptr<CasData> & refreshData)199 Status CasImpl::refreshEntitlements(
200 int32_t refreshType, const ::std::unique_ptr<CasData> &refreshData) {
201 ALOGV("refreshEntitlements");
202 sp<PluginHolder> holder = mPluginHolder;
203 if (holder == NULL) {
204 return getBinderStatus(INVALID_OPERATION);
205 }
206
207 status_t err;
208 if (refreshData == nullptr) {
209 err = holder->get()->refreshEntitlements(refreshType, CasData());
210 } else {
211 err = holder->get()->refreshEntitlements(refreshType, *refreshData);
212 }
213 return getBinderStatus(err);
214 }
215
release()216 Status CasImpl::release() {
217 ALOGV("release: plugin=%p",
218 mPluginHolder == NULL ? mPluginHolder->get() : NULL);
219 mPluginHolder.clear();
220 return Status::ok();
221 }
222
223 } // namespace android
224
225