IAppOpsService.cpp revision 913b63d235a982174b66acad95ca2f87ac8a1982 
1/*
2 * Copyright (C) 2013 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_TAG "AppOpsService"
18
19#include <binder/IAppOpsService.h>
20
21#include <utils/Debug.h>
22#include <utils/Log.h>
23#include <binder/Parcel.h>
24#include <utils/String8.h>
25
26#include <private/binder/Static.h>
27
28namespace android {
29
30// ----------------------------------------------------------------------
31
32class BpAppOpsService : public BpInterface<IAppOpsService>
33{
34public:
35    BpAppOpsService(const sp<IBinder>& impl)
36        : BpInterface<IAppOpsService>(impl)
37    {
38    }
39
40    virtual int32_t checkOperation(int32_t code, int32_t uid, const String16& packageName) {
41        Parcel data, reply;
42        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
43        data.writeInt32(code);
44        data.writeInt32(uid);
45        data.writeString16(packageName);
46        remote()->transact(CHECK_OPERATION_TRANSACTION, data, &reply);
47        // fail on exception
48        if (reply.readExceptionCode() != 0) return MODE_ERRORED;
49        return reply.readInt32();
50    }
51
52    virtual int32_t noteOperation(int32_t code, int32_t uid, const String16& packageName) {
53        Parcel data, reply;
54        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
55        data.writeInt32(code);
56        data.writeInt32(uid);
57        data.writeString16(packageName);
58        remote()->transact(NOTE_OPERATION_TRANSACTION, data, &reply);
59        // fail on exception
60        if (reply.readExceptionCode() != 0) return MODE_ERRORED;
61        return reply.readInt32();
62    }
63
64    virtual int32_t startOperation(const sp<IBinder>& token, int32_t code, int32_t uid,
65                const String16& packageName) {
66        Parcel data, reply;
67        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
68        data.writeStrongBinder(token);
69        data.writeInt32(code);
70        data.writeInt32(uid);
71        data.writeString16(packageName);
72        remote()->transact(START_OPERATION_TRANSACTION, data, &reply);
73        // fail on exception
74        if (reply.readExceptionCode() != 0) return MODE_ERRORED;
75        return reply.readInt32();
76    }
77
78    virtual void finishOperation(const sp<IBinder>& token, int32_t code, int32_t uid,
79            const String16& packageName) {
80        Parcel data, reply;
81        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
82        data.writeStrongBinder(token);
83        data.writeInt32(code);
84        data.writeInt32(uid);
85        data.writeString16(packageName);
86        remote()->transact(FINISH_OPERATION_TRANSACTION, data, &reply);
87    }
88
89    virtual void startWatchingMode(int32_t op, const String16& packageName,
90            const sp<IAppOpsCallback>& callback) {
91        Parcel data, reply;
92        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
93        data.writeInt32(op);
94        data.writeString16(packageName);
95        data.writeStrongBinder(callback->asBinder());
96        remote()->transact(START_WATCHING_MODE_TRANSACTION, data, &reply);
97    }
98
99    virtual void stopWatchingMode(const sp<IAppOpsCallback>& callback) {
100        Parcel data, reply;
101        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
102        data.writeStrongBinder(callback->asBinder());
103        remote()->transact(STOP_WATCHING_MODE_TRANSACTION, data, &reply);
104    }
105
106    virtual sp<IBinder> getToken(const sp<IBinder>& clientToken) {
107        Parcel data, reply;
108        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
109        data.writeStrongBinder(clientToken);
110        remote()->transact(GET_TOKEN_TRANSACTION, data, &reply);
111        // fail on exception
112        if (reply.readExceptionCode() != 0) return NULL;
113        return reply.readStrongBinder();
114    }
115};
116
117IMPLEMENT_META_INTERFACE(AppOpsService, "com.android.internal.app.IAppOpsService");
118
119// ----------------------------------------------------------------------
120
121status_t BnAppOpsService::onTransact(
122    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
123{
124    //printf("AppOpsService received: "); data.print();
125    switch(code) {
126        case CHECK_OPERATION_TRANSACTION: {
127            CHECK_INTERFACE(IAppOpsService, data, reply);
128            int32_t code = data.readInt32();
129            int32_t uid = data.readInt32();
130            String16 packageName = data.readString16();
131            int32_t res = checkOperation(code, uid, packageName);
132            reply->writeNoException();
133            reply->writeInt32(res);
134            return NO_ERROR;
135        } break;
136        case NOTE_OPERATION_TRANSACTION: {
137            CHECK_INTERFACE(IAppOpsService, data, reply);
138            int32_t code = data.readInt32();
139            int32_t uid = data.readInt32();
140            String16 packageName = data.readString16();
141            int32_t res = noteOperation(code, uid, packageName);
142            reply->writeNoException();
143            reply->writeInt32(res);
144            return NO_ERROR;
145        } break;
146        case START_OPERATION_TRANSACTION: {
147            CHECK_INTERFACE(IAppOpsService, data, reply);
148            sp<IBinder> token = data.readStrongBinder();
149            int32_t code = data.readInt32();
150            int32_t uid = data.readInt32();
151            String16 packageName = data.readString16();
152            int32_t res = startOperation(token, code, uid, packageName);
153            reply->writeNoException();
154            reply->writeInt32(res);
155            return NO_ERROR;
156        } break;
157        case FINISH_OPERATION_TRANSACTION: {
158            CHECK_INTERFACE(IAppOpsService, data, reply);
159            sp<IBinder> token = data.readStrongBinder();
160            int32_t code = data.readInt32();
161            int32_t uid = data.readInt32();
162            String16 packageName = data.readString16();
163            finishOperation(token, code, uid, packageName);
164            reply->writeNoException();
165            return NO_ERROR;
166        } break;
167        case START_WATCHING_MODE_TRANSACTION: {
168            CHECK_INTERFACE(IAppOpsService, data, reply);
169            int32_t op = data.readInt32();
170            String16 packageName = data.readString16();
171            sp<IAppOpsCallback> callback = interface_cast<IAppOpsCallback>(data.readStrongBinder());
172            startWatchingMode(op, packageName, callback);
173            reply->writeNoException();
174            return NO_ERROR;
175        } break;
176        case STOP_WATCHING_MODE_TRANSACTION: {
177            CHECK_INTERFACE(IAppOpsService, data, reply);
178            sp<IAppOpsCallback> callback = interface_cast<IAppOpsCallback>(data.readStrongBinder());
179            stopWatchingMode(callback);
180            reply->writeNoException();
181            return NO_ERROR;
182        } break;
183        case GET_TOKEN_TRANSACTION: {
184            CHECK_INTERFACE(IAppOpsService, data, reply);
185            sp<IBinder> clientToken = data.readStrongBinder();
186            sp<IBinder> token = getToken(clientToken);
187            reply->writeNoException();
188            reply->writeStrongBinder(token);
189            return NO_ERROR;
190        } break;
191        default:
192            return BBinder::onTransact(code, data, reply, flags);
193    }
194}
195
196}; // namespace android
197