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      1 /*
      2  * Copyright (C) 2005 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 //
     18 #ifndef ANDROID_ISERVICE_MANAGER_H
     19 #define ANDROID_ISERVICE_MANAGER_H
     20 
     21 #include <binder/IInterface.h>
     22 #include <binder/IPermissionController.h>
     23 #include <utils/Vector.h>
     24 #include <utils/String16.h>
     25 
     26 namespace android {
     27 
     28 // ----------------------------------------------------------------------
     29 
     30 class IServiceManager : public IInterface
     31 {
     32 public:
     33     DECLARE_META_INTERFACE(ServiceManager);
     34 
     35     /**
     36      * Retrieve an existing service, blocking for a few seconds
     37      * if it doesn't yet exist.
     38      */
     39     virtual sp<IBinder>         getService( const String16& name) const = 0;
     40 
     41     /**
     42      * Retrieve an existing service, non-blocking.
     43      */
     44     virtual sp<IBinder>         checkService( const String16& name) const = 0;
     45 
     46     /**
     47      * Register a service.
     48      */
     49     virtual status_t            addService( const String16& name,
     50                                             const sp<IBinder>& service) = 0;
     51 
     52     /**
     53      * Return list of all existing services.
     54      */
     55     virtual Vector<String16>    listServices() = 0;
     56 
     57     enum {
     58         GET_SERVICE_TRANSACTION = IBinder::FIRST_CALL_TRANSACTION,
     59         CHECK_SERVICE_TRANSACTION,
     60         ADD_SERVICE_TRANSACTION,
     61         LIST_SERVICES_TRANSACTION,
     62     };
     63 };
     64 
     65 sp<IServiceManager> defaultServiceManager();
     66 
     67 template<typename INTERFACE>
     68 status_t getService(const String16& name, sp<INTERFACE>* outService)
     69 {
     70     const sp<IServiceManager> sm = defaultServiceManager();
     71     if (sm != NULL) {
     72         *outService = interface_cast<INTERFACE>(sm->getService(name));
     73         if ((*outService) != NULL) return NO_ERROR;
     74     }
     75     return NAME_NOT_FOUND;
     76 }
     77 
     78 bool checkCallingPermission(const String16& permission);
     79 bool checkCallingPermission(const String16& permission,
     80                             int32_t* outPid, int32_t* outUid);
     81 bool checkPermission(const String16& permission, pid_t pid, uid_t uid);
     82 
     83 
     84 // ----------------------------------------------------------------------
     85 
     86 class BnServiceManager : public BnInterface<IServiceManager>
     87 {
     88 public:
     89     virtual status_t    onTransact( uint32_t code,
     90                                     const Parcel& data,
     91                                     Parcel* reply,
     92                                     uint32_t flags = 0);
     93 };
     94 
     95 // ----------------------------------------------------------------------
     96 
     97 }; // namespace android
     98 
     99 #endif // ANDROID_ISERVICE_MANAGER_H
    100 
    101