App ops: new native access API.

This is to help implementation of bug #8181262 and maybe
bug #8181261

Note the current code has not yet been tested; it is only
known to compile at this point.

Change-Id: I489674c96d0d3fc0ddacc92611931a19a9ee5230

1 files changed, 172 insertions, 0 deletions

diff --git a/libs/binder/IAppOpsService.cpp b/libs/binder/IAppOpsService.cpp
new file mode 100644
index 0000000..d8922c9
--- /dev/null
+++ b/libs/binder/IAppOpsService.cpp
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AppOpsService"
+
+#include <binder/IAppOpsService.h>
+
+#include <utils/Debug.h>
+#include <utils/Log.h>
+#include <binder/Parcel.h>
+#include <utils/String8.h>
+
+#include <private/binder/Static.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------
+
+class BpAppOpsService : public BpInterface<IAppOpsService>
+{
+public:
+    BpAppOpsService(const sp<IBinder>& impl)
+        : BpInterface<IAppOpsService>(impl)
+    {
+    }
+
+    virtual int32_t checkOperation(int32_t code, int32_t uid, const String16& packageName) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
+        data.writeInt32(code);
+        data.writeInt32(uid);
+        data.writeString16(packageName);
+        remote()->transact(CHECK_OPERATION_TRANSACTION, data, &reply);
+        // fail on exception
+        if (reply.readExceptionCode() != 0) return 0;
+        return reply.readInt32() != 0;
+    }
+
+    virtual int32_t noteOperation(int32_t code, int32_t uid, const String16& packageName) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
+        data.writeInt32(code);
+        data.writeInt32(uid);
+        data.writeString16(packageName);
+        remote()->transact(NOTE_OPERATION_TRANSACTION, data, &reply);
+        // fail on exception
+        if (reply.readExceptionCode() != 0) return 0;
+        return reply.readInt32() != 0;
+    }
+
+    virtual int32_t startOperation(int32_t code, int32_t uid, const String16& packageName) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
+        data.writeInt32(code);
+        data.writeInt32(uid);
+        data.writeString16(packageName);
+        remote()->transact(START_OPERATION_TRANSACTION, data, &reply);
+        // fail on exception
+        if (reply.readExceptionCode() != 0) return 0;
+        return reply.readInt32() != 0;
+    }
+
+    virtual void finishOperation(int32_t code, int32_t uid, const String16& packageName) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
+        data.writeInt32(code);
+        data.writeInt32(uid);
+        data.writeString16(packageName);
+        remote()->transact(FINISH_OPERATION_TRANSACTION, data, &reply);
+    }
+
+    virtual void startWatchingMode(int32_t op, const String16& packageName,
+            const sp<IAppOpsCallback>& callback) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
+        data.writeInt32(op);
+        data.writeString16(packageName);
+        data.writeStrongBinder(callback->asBinder());
+        remote()->transact(START_WATCHING_MODE_TRANSACTION, data, &reply);
+    }
+
+    virtual void stopWatchingMode(const sp<IAppOpsCallback>& callback) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAppOpsService::getInterfaceDescriptor());
+        data.writeStrongBinder(callback->asBinder());
+        remote()->transact(STOP_WATCHING_MODE_TRANSACTION, data, &reply);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(AppOpsService, "com.android.internal.app.IAppOpsService");
+
+// ----------------------------------------------------------------------
+
+status_t BnAppOpsService::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    //printf("AppOpsService received: "); data.print();
+    switch(code) {
+        case CHECK_OPERATION_TRANSACTION: {
+            CHECK_INTERFACE(IAppOpsService, data, reply);
+            int32_t code = data.readInt32();
+            int32_t uid = data.readInt32();
+            String16 packageName = data.readString16();
+            int32_t res = checkOperation(code, uid, packageName);
+            reply->writeNoException();
+            reply->writeInt32(res);
+            return NO_ERROR;
+        } break;
+        case NOTE_OPERATION_TRANSACTION: {
+            CHECK_INTERFACE(IAppOpsService, data, reply);
+            int32_t code = data.readInt32();
+            int32_t uid = data.readInt32();
+            String16 packageName = data.readString16();
+            int32_t res = noteOperation(code, uid, packageName);
+            reply->writeNoException();
+            reply->writeInt32(res);
+            return NO_ERROR;
+        } break;
+        case START_OPERATION_TRANSACTION: {
+            CHECK_INTERFACE(IAppOpsService, data, reply);
+            int32_t code = data.readInt32();
+            int32_t uid = data.readInt32();
+            String16 packageName = data.readString16();
+            int32_t res = startOperation(code, uid, packageName);
+            reply->writeNoException();
+            reply->writeInt32(res);
+            return NO_ERROR;
+        } break;
+        case FINISH_OPERATION_TRANSACTION: {
+            CHECK_INTERFACE(IAppOpsService, data, reply);
+            int32_t code = data.readInt32();
+            int32_t uid = data.readInt32();
+            String16 packageName = data.readString16();
+            finishOperation(code, uid, packageName);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        case START_WATCHING_MODE_TRANSACTION: {
+            CHECK_INTERFACE(IAppOpsService, data, reply);
+            int32_t op = data.readInt32();
+            String16 packageName = data.readString16();
+            sp<IAppOpsCallback> callback = interface_cast<IAppOpsCallback>(data.readStrongBinder());
+            startWatchingMode(op, packageName, callback);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        case STOP_WATCHING_MODE_TRANSACTION: {
+            CHECK_INTERFACE(IAppOpsService, data, reply);
+            sp<IAppOpsCallback> callback = interface_cast<IAppOpsCallback>(data.readStrongBinder());
+            stopWatchingMode(callback);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}; // namespace android