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/*
* Copyright (C) 2016 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.
*/
#include <unistd.h>
#include <fcntl.h>
#include <android/permission_manager.h>
#include <binder/ActivityManager.h>
#include <binder/IActivityManager.h>
#include <binder/Parcel.h>
#include <utils/Errors.h>
namespace android {
// ------------------------------------------------------------------------------------
class BpActivityManager : public BpInterface<IActivityManager>
{
public:
explicit BpActivityManager(const sp<IBinder>& impl)
: BpInterface<IActivityManager>(impl)
{
}
virtual int openContentUri(const String16& stringUri)
{
Parcel data, reply;
data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
data.writeString16(stringUri);
status_t ret = remote()->transact(OPEN_CONTENT_URI_TRANSACTION, data, & reply);
int fd = -1;
if (ret == NO_ERROR) {
int32_t exceptionCode = reply.readExceptionCode();
if (!exceptionCode) {
// Success is indicated here by a nonzero int followed by the fd;
// failure by a zero int with no data following.
if (reply.readInt32() != 0) {
fd = fcntl(reply.readParcelFileDescriptor(), F_DUPFD_CLOEXEC, 0);
}
} else {
// An exception was thrown back; fall through to return failure
ALOGD("openContentUri(%s) caught exception %d\n", String8(stringUri).c_str(),
exceptionCode);
}
}
return fd;
}
virtual status_t registerUidObserver(const sp<IUidObserver>& observer,
const int32_t event,
const int32_t cutpoint,
const String16& callingPackage)
{
Parcel data, reply;
data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
data.writeStrongBinder(IInterface::asBinder(observer));
data.writeInt32(event);
data.writeInt32(cutpoint);
data.writeString16(callingPackage);
status_t err = remote()->transact(REGISTER_UID_OBSERVER_TRANSACTION, data, &reply);
if (err != NO_ERROR || ((err = reply.readExceptionCode()) != NO_ERROR)) {
return err;
}
return OK;
}
virtual status_t unregisterUidObserver(const sp<IUidObserver>& observer)
{
Parcel data, reply;
data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
data.writeStrongBinder(IInterface::asBinder(observer));
status_t err = remote()->transact(UNREGISTER_UID_OBSERVER_TRANSACTION, data, &reply);
if (err != NO_ERROR || ((err = reply.readExceptionCode()) != NO_ERROR)) {
return err;
}
return OK;
}
virtual bool isUidActive(const uid_t uid, const String16& callingPackage)
{
Parcel data, reply;
data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
data.writeInt32(uid);
data.writeString16(callingPackage);
remote()->transact(IS_UID_ACTIVE_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) return false;
return reply.readInt32() == 1;
}
virtual int32_t getUidProcessState(const uid_t uid, const String16& callingPackage)
{
Parcel data, reply;
data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
data.writeInt32(uid);
data.writeString16(callingPackage);
remote()->transact(GET_UID_PROCESS_STATE_TRANSACTION, data, &reply);
// fail on exception
if (reply.readExceptionCode() != 0) {
return ActivityManager::PROCESS_STATE_UNKNOWN;
}
return reply.readInt32();
}
virtual status_t checkPermission(const String16& permission,
const pid_t pid,
const uid_t uid,
int32_t* outResult) {
Parcel data, reply;
data.writeInterfaceToken(IActivityManager::getInterfaceDescriptor());
data.writeString16(permission);
data.writeInt32(pid);
data.writeInt32(uid);
status_t err = remote()->transact(CHECK_PERMISSION_TRANSACTION, data, &reply);
if (err != NO_ERROR || ((err = reply.readExceptionCode()) != NO_ERROR)) {
return err;
}
*outResult = reply.readInt32();
return NO_ERROR;
}
};
// ------------------------------------------------------------------------------------
IMPLEMENT_META_INTERFACE(ActivityManager, "android.app.IActivityManager")
} // namespace android
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