cmds/statsd/src/socket/StatsSocketListener.h

/*
 * Copyright (C) 2018 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.
 */
#pragma once

#include <sysutils/SocketListener.h>
#include <utils/RefBase.h>
#include "logd/LogListener.h"

// DEFAULT_OVERFLOWUID is defined in linux/highuid.h, which is not part of
// the uapi headers for userspace to use.  This value is filled in on the
// out-of-band socket credentials if the OS fails to find one available.
// One of the causes of this is if SO_PASSCRED is set, all the packets before
// that point will have this value.  We also use it in a fake credential if
// no socket credentials are supplied.
#ifndef DEFAULT_OVERFLOWUID
#define DEFAULT_OVERFLOWUID 65534
#endif

namespace android {
namespace os {
namespace statsd {

class StatsSocketListener : public SocketListener, public virtual android::RefBase {
public:
    StatsSocketListener(const sp<LogListener>& listener);

    virtual ~StatsSocketListener();

protected:
    virtual bool onDataAvailable(SocketClient* cli);

private:
    static int getLogSocket();
    /**
     * Who is going to get the events when they're read.
     */
    sp<LogListener> mListener;
};
}  // namespace statsd
}  // namespace os
}  // namespace android