| Glenn Kasten | 44deb05 | 2012-02-05 18:09:08 -0800 | [diff] [blame] | 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 |