1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright (C) 2005 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * you may not use this file except in compliance with the License. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * See the License for the specific language governing permissions and 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 17edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#define LOG_TAG "ServiceManager" 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 19c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/IServiceManager.h> 20edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 21edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/Log.h> 22375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian#include <binder/IPCThreadState.h> 23c5b2c0bf8007562536b822eb060fc54a01f8e08bMathias Agopian#include <binder/Parcel.h> 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/String8.h> 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <utils/SystemClock.h> 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 27208059f67ed2dd9fa025e07fcb6954d3cb61c79eMathias Agopian#include <private/binder/Static.h> 28edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <unistd.h> 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectsp<IServiceManager> defaultServiceManager() 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (gDefaultServiceManager != NULL) return gDefaultServiceManager; 36c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 37edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(gDefaultServiceManagerLock); 39a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor while (gDefaultServiceManager == NULL) { 40edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManager = interface_cast<IServiceManager>( 41edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ProcessState::self()->getContextObject(NULL)); 42a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor if (gDefaultServiceManager == NULL) 43a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor sleep(1); 44edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 46c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 47edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return gDefaultServiceManager; 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 49edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool checkCallingPermission(const String16& permission) 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return checkCallingPermission(permission, NULL, NULL); 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatic String16 _permission("permission"); 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 57375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool checkCallingPermission(const String16& permission, int32_t* outPid, int32_t* outUid) 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IPCThreadState* ipcState = IPCThreadState::self(); 61375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian pid_t pid = ipcState->getCallingPid(); 62375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian uid_t uid = ipcState->getCallingUid(); 63edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (outPid) *outPid = pid; 64375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian if (outUid) *outUid = uid; 65375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian return checkPermission(permission, pid, uid); 66375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian} 67375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian 68375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopianbool checkPermission(const String16& permission, pid_t pid, uid_t uid) 69375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian{ 70c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat#ifdef __BRILLO__ 71c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat // Brillo doesn't currently run ActivityManager or support framework permissions. 72c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat return true; 73c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat#endif 74c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 75edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IPermissionController> pc; 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.lock(); 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project pc = gPermissionController; 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.unlock(); 79c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int64_t startTime = 0; 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 82edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project while (true) { 83edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (pc != NULL) { 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bool res = pc->checkPermission(permission, pid, uid); 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (res) { 86edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (startTime != 0) { 87a19954ab377b46dbcb9cbe8a6ab6d458f2e32bcaSteve Block ALOGI("Check passed after %d seconds for %s from uid=%d pid=%d", 88edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project (int)((uptimeMillis()-startTime)/1000), 89edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(permission).string(), uid, pid); 90edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 91edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return res; 92edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 93c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 94edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Is this a permission failure, or did the controller go away? 95097ca275f4717a2c47a5d49f302ed2b72c8a1370Marco Nelissen if (IInterface::asBinder(pc)->isBinderAlive()) { 9632397c1cd3327905173b36baa6fd1c579bc328ffSteve Block ALOGW("Permission failure: %s from uid=%d pid=%d", 97edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(permission).string(), uid, pid); 98edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return false; 99edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 100c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 101edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Object is dead! 102edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.lock(); 103edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (gPermissionController == pc) { 104edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gPermissionController = NULL; 105edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 106edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.unlock(); 107edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 108c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 109edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Need to retrieve the permission controller. 110edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IBinder> binder = defaultServiceManager()->checkService(_permission); 111edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (binder == NULL) { 112edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Wait for the permission controller to come back... 113edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (startTime == 0) { 114edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project startTime = uptimeMillis(); 115a19954ab377b46dbcb9cbe8a6ab6d458f2e32bcaSteve Block ALOGI("Waiting to check permission %s from uid=%d pid=%d", 116edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(permission).string(), uid, pid); 117edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 118edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sleep(1); 119edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 120edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project pc = interface_cast<IPermissionController>(binder); 121c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat // Install the new permission controller, and try again. 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.lock(); 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gPermissionController = pc; 124edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.unlock(); 125edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 126edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 127edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 128edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 129edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// ---------------------------------------------------------------------- 130edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 131edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass BpServiceManager : public BpInterface<IServiceManager> 132edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 133edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 134edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project BpServiceManager(const sp<IBinder>& impl) 135edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project : BpInterface<IServiceManager>(impl) 136edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 137edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 138702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick 139edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual sp<IBinder> getService(const String16& name) const 140edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 141edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project unsigned n; 142edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project for (n = 0; n < 5; n++){ 143edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IBinder> svc = checkService(name); 144edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (svc != NULL) return svc; 145a19954ab377b46dbcb9cbe8a6ab6d458f2e32bcaSteve Block ALOGI("Waiting for service %s...\n", String8(name).string()); 146edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sleep(1); 147edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 148edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NULL; 149edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 150702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick 151edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual sp<IBinder> checkService( const String16& name) const 152edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 153edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 154edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor()); 155edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeString16(name); 156edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project remote()->transact(CHECK_SERVICE_TRANSACTION, data, &reply); 157edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return reply.readStrongBinder(); 158edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 159edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 160a94f129a7bbaa8ea45c50e49ba3e6127ca2a15ecDianne Hackborn virtual status_t addService(const String16& name, const sp<IBinder>& service, 161a94f129a7bbaa8ea45c50e49ba3e6127ca2a15ecDianne Hackborn bool allowIsolated) 162edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 163edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 164edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor()); 165edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeString16(name); 166edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeStrongBinder(service); 167a94f129a7bbaa8ea45c50e49ba3e6127ca2a15ecDianne Hackborn data.writeInt32(allowIsolated ? 1 : 0); 168edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t err = remote()->transact(ADD_SERVICE_TRANSACTION, data, &reply); 169837a0d0fb2c3fba8082d47d04cb6120af1eb9a54Brad Fitzpatrick return err == NO_ERROR ? reply.readExceptionCode() : err; 170edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 171edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 172edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual Vector<String16> listServices() 173edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 174edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Vector<String16> res; 175edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int n = 0; 176edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 177edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project for (;;) { 178edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 179edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor()); 180edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInt32(n++); 181edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t err = remote()->transact(LIST_SERVICES_TRANSACTION, data, &reply); 182edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (err != NO_ERROR) 183edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project break; 184edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project res.add(reply.readString16()); 185edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 186edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return res; 187edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 188edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 189edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 190edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectIMPLEMENT_META_INTERFACE(ServiceManager, "android.os.IServiceManager"); 191edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 192edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 193