include/binder/IServiceManager.h

/*
 * 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.
 */

//
#ifndef ANDROID_ISERVICE_MANAGER_H
#define ANDROID_ISERVICE_MANAGER_H

#include <binder/IInterface.h>
#include <binder/IPermissionController.h>
#include <utils/Vector.h>
#include <utils/String16.h>

namespace android {

// ----------------------------------------------------------------------

class IServiceManager : public IInterface
{
public:
    DECLARE_META_INTERFACE(ServiceManager);

    /**
     * Retrieve an existing service, blocking for a few seconds
     * if it doesn't yet exist.
     */
    virtual sp<IBinder>         getService( const String16& name) const = 0;

    /**
     * Retrieve an existing service, non-blocking.
     */
    virtual sp<IBinder>         checkService( const String16& name) const = 0;

    /**
     * Register a service.
     */
    virtual status_t            addService( const String16& name,
                                            const sp<IBinder>& service) = 0;

    /**
     * Return list of all existing services.
     */
    virtual Vector<String16>    listServices() = 0;

    enum {
        GET_SERVICE_TRANSACTION = IBinder::FIRST_CALL_TRANSACTION,
        CHECK_SERVICE_TRANSACTION,
        ADD_SERVICE_TRANSACTION,
        LIST_SERVICES_TRANSACTION,
    };
};

sp<IServiceManager> defaultServiceManager();

template<typename INTERFACE>
status_t getService(const String16& name, sp<INTERFACE>* outService)
{
    const sp<IServiceManager> sm = defaultServiceManager();
    if (sm != NULL) {
        *outService = interface_cast<INTERFACE>(sm->getService(name));
        if ((*outService) != NULL) return NO_ERROR;
    }
    return NAME_NOT_FOUND;
}

bool checkCallingPermission(const String16& permission);
bool checkCallingPermission(const String16& permission,
                            int32_t* outPid, int32_t* outUid);

// ----------------------------------------------------------------------

class BnServiceManager : public BnInterface<IServiceManager>
{
public:
    virtual status_t    onTransact( uint32_t code,
                                    const Parcel& data,
                                    Parcel* reply,
                                    uint32_t flags = 0);
};

// ----------------------------------------------------------------------

}; // namespace android

#endif // ANDROID_ISERVICE_MANAGER_H