IPermissionController.cpp revision f1377f506c764a8b254b60ee28e38e12ccc8135c
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#define LOG_TAG "PermissionController" 18 19#include <binder/IPermissionController.h> 20 21#include <utils/Log.h> 22#include <binder/Parcel.h> 23#include <utils/String8.h> 24 25#include <private/binder/Static.h> 26 27namespace android { 28 29// ---------------------------------------------------------------------- 30 31class BpPermissionController : public BpInterface<IPermissionController> 32{ 33public: 34 BpPermissionController(const sp<IBinder>& impl) 35 : BpInterface<IPermissionController>(impl) 36 { 37 } 38 39 virtual bool checkPermission(const String16& permission, int32_t pid, int32_t uid) 40 { 41 Parcel data, reply; 42 data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor()); 43 data.writeString16(permission); 44 data.writeInt32(pid); 45 data.writeInt32(uid); 46 remote()->transact(CHECK_PERMISSION_TRANSACTION, data, &reply); 47 // fail on exception 48 if (reply.readExceptionCode() != 0) return 0; 49 return reply.readInt32() != 0; 50 } 51 52 virtual void getPackagesForUid(const uid_t uid, Vector<String16>& packages) 53 { 54 Parcel data, reply; 55 data.writeInterfaceToken(IPermissionController::getInterfaceDescriptor()); 56 data.writeInt32(uid); 57 remote()->transact(GET_PACKAGES_FOR_UID_TRANSACTION, data, &reply); 58 // fail on exception 59 if (reply.readExceptionCode() != 0) { 60 return; 61 } 62 const int32_t size = reply.readInt32(); 63 if (size <= 0) { 64 return; 65 } 66 for (int i = 0; i < size; i++) { 67 packages.push(reply.readString16()); 68 } 69 } 70}; 71 72IMPLEMENT_META_INTERFACE(PermissionController, "android.os.IPermissionController"); 73 74// ---------------------------------------------------------------------- 75 76status_t BnPermissionController::onTransact( 77 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 78{ 79 switch(code) { 80 case CHECK_PERMISSION_TRANSACTION: { 81 CHECK_INTERFACE(IPermissionController, data, reply); 82 String16 permission = data.readString16(); 83 int32_t pid = data.readInt32(); 84 int32_t uid = data.readInt32(); 85 bool res = checkPermission(permission, pid, uid); 86 reply->writeNoException(); 87 reply->writeInt32(res ? 1 : 0); 88 return NO_ERROR; 89 } break; 90 91 case GET_PACKAGES_FOR_UID_TRANSACTION: { 92 CHECK_INTERFACE(IPermissionController, data, reply); 93 int32_t uid = data.readInt32(); 94 Vector<String16> packages; 95 getPackagesForUid(uid, packages); 96 reply->writeNoException(); 97 size_t size = packages.size(); 98 reply->writeInt32(size); 99 for (size_t i = 0; i < size; i++) { 100 reply->writeString16(packages[i]); 101 } 102 return NO_ERROR; 103 } break; 104 105 default: 106 return BBinder::onTransact(code, data, reply, flags); 107 } 108} 109 110}; // namespace android 111