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 22 namespace android { 23 24 // This optimization assumes mediaserver process doesn't fork, which it doesn't 25 const pid_t getpid_cached = getpid(); 26 27 bool recordingAllowed() { 28 if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true; 29 static const String16 sRecordAudio("android.permission.RECORD_AUDIO"); 30 // don't use PermissionCache; this is not a system permission 31 bool ok = checkCallingPermission(sRecordAudio); 32 if (!ok) ALOGE("Request requires android.permission.RECORD_AUDIO"); 33 return ok; 34 } 35 36 bool settingsAllowed() { 37 if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true; 38 static const String16 sAudioSettings("android.permission.MODIFY_AUDIO_SETTINGS"); 39 // don't use PermissionCache; this is not a system permission 40 bool ok = checkCallingPermission(sAudioSettings); 41 if (!ok) ALOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS"); 42 return ok; 43 } 44 45 bool dumpAllowed() { 46 // don't optimize for same pid, since mediaserver never dumps itself 47 static const String16 sDump("android.permission.DUMP"); 48 // OK to use PermissionCache; this is a system permission 49 bool ok = PermissionCache::checkCallingPermission(sDump); 50 // convention is for caller to dump an error message to fd instead of logging here 51 //if (!ok) ALOGE("Request requires android.permission.DUMP"); 52 return ok; 53 } 54 55 } // namespace android 56
