ServiceUtilities.cpp revision 949a926cadbc961fbb649c91d76d7aee8ea4d7bd
1/* 2 * Copyright (C) 2012 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#include <binder/IPCThreadState.h> 18#include <binder/IServiceManager.h> 19#include <binder/PermissionCache.h> 20#include "ServiceUtilities.h" 21 22namespace android { 23 24// Not valid until initialized by AudioFlinger constructor. It would have to be 25// re-initialized if the process containing AudioFlinger service forks (which it doesn't). 26pid_t getpid_cached; 27 28bool recordingAllowed() { 29 if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true; 30 static const String16 sRecordAudio("android.permission.RECORD_AUDIO"); 31 // don't use PermissionCache; this is not a system permission 32 bool ok = checkCallingPermission(sRecordAudio); 33 if (!ok) ALOGE("Request requires android.permission.RECORD_AUDIO"); 34 return ok; 35} 36 37bool settingsAllowed() { 38 if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true; 39 static const String16 sAudioSettings("android.permission.MODIFY_AUDIO_SETTINGS"); 40 // don't use PermissionCache; this is not a system permission 41 bool ok = checkCallingPermission(sAudioSettings); 42 if (!ok) ALOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 43 return ok; 44} 45 46bool dumpAllowed() { 47 // don't optimize for same pid, since mediaserver never dumps itself 48 static const String16 sDump("android.permission.DUMP"); 49 // OK to use PermissionCache; this is a system permission 50 bool ok = PermissionCache::checkCallingPermission(sDump); 51 // convention is for caller to dump an error message to fd instead of logging here 52 //if (!ok) ALOGE("Request requires android.permission.DUMP"); 53 return ok; 54} 55 56} // namespace android 57