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/*
* Copyright (C) 2005 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 "PermissionController"
#include <binder/IPermissionController.h>
#include <utils/Log.h>
#include <binder/Parcel.h>
#include <utils/String8.h>
namespace android {
// ----------------------------------------------------------------------
class BpPermissionController : public BpInterface<IPermissionController>
{
public:
explicit BpPermissionController(const sp<IBinder>& impl)
: BpInterface<IPermissionController>(impl)
{
}
virtual bool checkPermission(const String16& permission, int32_t pid, int32_t uid)
{
Parcel data, reply;
data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor());
data.writeString16(permission);
data.writeInt32(pid);
data.writeInt32(uid);
remote()->transact(CHECK_PERMISSION_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) return 0;
return reply.readInt32() != 0;
}
virtual int32_t noteOp(const String16& op, int32_t uid, const String16& packageName)
{
Parcel data, reply;
data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor());
data.writeString16(op);
data.writeInt32(uid);
data.writeString16(packageName);
remote()->transact(NOTE_OP_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) return 2; // MODE_ERRORED
return reply.readInt32();
}
virtual void getPackagesForUid(const uid_t uid, Vector<String16>& packages)
{
Parcel data, reply;
data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor());
data.writeInt32(uid);
remote()->transact(GET_PACKAGES_FOR_UID_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) {
return;
}
const int32_t size = reply.readInt32();
if (size <= 0) {
return;
}
for (int i = 0; i < size; i++) {
packages.push(reply.readString16());
}
}
virtual bool isRuntimePermission(const String16& permission)
{
Parcel data, reply;
data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor());
data.writeString16(permission);
remote()->transact(IS_RUNTIME_PERMISSION_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) return false;
return reply.readInt32() != 0;
}
virtual int getPackageUid(const String16& package, int flags)
{
Parcel data, reply;
data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor());
data.writeString16(package);
data.writeInt32(flags);
remote()->transact(GET_PACKAGE_UID_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) return false;
return reply.readInt32();
}
};
IMPLEMENT_META_INTERFACE(PermissionController, "android.os.IPermissionController")
// ----------------------------------------------------------------------
// NOLINTNEXTLINE(google-default-arguments)
status_t BnPermissionController::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case CHECK_PERMISSION_TRANSACTION: {
CHECK_INTERFACE(IPermissionController, data, reply);
String16 permission = data.readString16();
int32_t pid = data.readInt32();
int32_t uid = data.readInt32();
bool res = checkPermission(permission, pid, uid);
reply->writeNoException();
reply->writeInt32(res ? 1 : 0);
return NO_ERROR;
} break;
case NOTE_OP_TRANSACTION: {
CHECK_INTERFACE(IPermissionController, data, reply);
String16 op = data.readString16();
int32_t uid = data.readInt32();
String16 packageName = data.readString16();
int32_t res = noteOp(op, uid, packageName);
reply->writeNoException();
reply->writeInt32(res);
return NO_ERROR;
} break;
case GET_PACKAGES_FOR_UID_TRANSACTION: {
CHECK_INTERFACE(IPermissionController, data, reply);
int32_t uid = data.readInt32();
Vector<String16> packages;
getPackagesForUid(uid, packages);
reply->writeNoException();
size_t size = packages.size();
reply->writeInt32(size);
for (size_t i = 0; i < size; i++) {
reply->writeString16(packages[i]);
}
return NO_ERROR;
} break;
case IS_RUNTIME_PERMISSION_TRANSACTION: {
CHECK_INTERFACE(IPermissionController, data, reply);
String16 permission = data.readString16();
const bool res = isRuntimePermission(permission);
reply->writeNoException();
reply->writeInt32(res ? 1 : 0);
return NO_ERROR;
} break;
case GET_PACKAGE_UID_TRANSACTION: {
CHECK_INTERFACE(IPermissionController, data, reply);
String16 package = data.readString16();
int flags = data.readInt32();
const int uid = getPackageUid(package, flags);
reply->writeNoException();
reply->writeInt32(uid);
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
} // namespace android
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