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> 26273e144215bbe3042686577032e584c4ec701447Iliyan Malchev#include <utils/CallStack.h> 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 28208059f67ed2dd9fa025e07fcb6954d3cb61c79eMathias Agopian#include <private/binder/Static.h> 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include <unistd.h> 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 32edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectnamespace android { 33edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectsp<IServiceManager> defaultServiceManager() 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (gDefaultServiceManager != NULL) return gDefaultServiceManager; 37c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project AutoMutex _l(gDefaultServiceManagerLock); 40a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor while (gDefaultServiceManager == NULL) { 41edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManager = interface_cast<IServiceManager>( 42edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project ProcessState::self()->getContextObject(NULL)); 43a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor if (gDefaultServiceManager == NULL) 44a7b0f04aaf7f04a9617dbbc839b1aaa6f20ca6d6Todd Poynor sleep(1); 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 46edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 47c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 48edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return gDefaultServiceManager; 49edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 50edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 51edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool checkCallingPermission(const String16& permission) 52edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 53edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return checkCallingPermission(permission, NULL, NULL); 54edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 55edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 56edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectstatic String16 _permission("permission"); 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 58375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian 59edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool checkCallingPermission(const String16& permission, int32_t* outPid, int32_t* outUid) 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project IPCThreadState* ipcState = IPCThreadState::self(); 62375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian pid_t pid = ipcState->getCallingPid(); 63375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian uid_t uid = ipcState->getCallingUid(); 64edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (outPid) *outPid = pid; 65375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian if (outUid) *outUid = uid; 66375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian return checkPermission(permission, pid, uid); 67375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian} 68375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian 69375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopianbool checkPermission(const String16& permission, pid_t pid, uid_t uid) 70375f56363a8737119ce2222dcfaacbe1cf733fc0Mathias Agopian{ 71edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IPermissionController> pc; 72edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.lock(); 73edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project pc = gPermissionController; 74edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.unlock(); 75c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 76edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int64_t startTime = 0; 77edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project while (true) { 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (pc != NULL) { 80edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project bool res = pc->checkPermission(permission, pid, uid); 81edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (res) { 82edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (startTime != 0) { 83a19954ab377b46dbcb9cbe8a6ab6d458f2e32bcaSteve Block ALOGI("Check passed after %d seconds for %s from uid=%d pid=%d", 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project (int)((uptimeMillis()-startTime)/1000), 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(permission).string(), uid, pid); 86edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 87edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return res; 88edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 89c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 90edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Is this a permission failure, or did the controller go away? 91097ca275f4717a2c47a5d49f302ed2b72c8a1370Marco Nelissen if (IInterface::asBinder(pc)->isBinderAlive()) { 9232397c1cd3327905173b36baa6fd1c579bc328ffSteve Block ALOGW("Permission failure: %s from uid=%d pid=%d", 93edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(permission).string(), uid, pid); 94edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return false; 95edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 96c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 97edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Object is dead! 98edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.lock(); 99edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (gPermissionController == pc) { 100edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gPermissionController = NULL; 101edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 102edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.unlock(); 103edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 104c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat 105edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Need to retrieve the permission controller. 106edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IBinder> binder = defaultServiceManager()->checkService(_permission); 107edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (binder == NULL) { 108edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project // Wait for the permission controller to come back... 109edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (startTime == 0) { 110edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project startTime = uptimeMillis(); 111a19954ab377b46dbcb9cbe8a6ab6d458f2e32bcaSteve Block ALOGI("Waiting to check permission %s from uid=%d pid=%d", 112edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project String8(permission).string(), uid, pid); 113edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 114edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sleep(1); 115edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 116edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project pc = interface_cast<IPermissionController>(binder); 117c2832705373b1ba058aafa6064f6ebd30ac6ee48Daniel Erat // Install the new permission controller, and try again. 118edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.lock(); 119edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gPermissionController = pc; 120edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project gDefaultServiceManagerLock.unlock(); 121edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 124edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 125edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// ---------------------------------------------------------------------- 126edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 127edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectclass BpServiceManager : public BpInterface<IServiceManager> 128edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 129edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectpublic: 130e2347b7953f70232541bdc1b392230d6231aaeb9Chih-Hung Hsieh explicit BpServiceManager(const sp<IBinder>& impl) 131edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project : BpInterface<IServiceManager>(impl) 132edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 133edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 134702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick 135edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual sp<IBinder> getService(const String16& name) const 136edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 137edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project unsigned n; 138edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project for (n = 0; n < 5; n++){ 1396456e4488d59c0568a1f29dc93b7beb472236086Andy Hung if (n > 0) { 140273e144215bbe3042686577032e584c4ec701447Iliyan Malchev if (!strcmp(ProcessState::self()->getDriverName().c_str(), "/dev/vndbinder")) { 141273e144215bbe3042686577032e584c4ec701447Iliyan Malchev ALOGI("Waiting for vendor service %s...", String8(name).string()); 142273e144215bbe3042686577032e584c4ec701447Iliyan Malchev CallStack stack(LOG_TAG); 143273e144215bbe3042686577032e584c4ec701447Iliyan Malchev } else { 144273e144215bbe3042686577032e584c4ec701447Iliyan Malchev ALOGI("Waiting for service %s...", String8(name).string()); 145273e144215bbe3042686577032e584c4ec701447Iliyan Malchev } 1466456e4488d59c0568a1f29dc93b7beb472236086Andy Hung sleep(1); 1476456e4488d59c0568a1f29dc93b7beb472236086Andy Hung } 148edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project sp<IBinder> svc = checkService(name); 149edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (svc != NULL) return svc; 150edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 151edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return NULL; 152edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 153702ea9d42f52fc145090c0f0bfbe64993e4b8b33Brad Fitzpatrick 154edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual sp<IBinder> checkService( const String16& name) const 155edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 156edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 157edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor()); 158edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeString16(name); 159edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project remote()->transact(CHECK_SERVICE_TRANSACTION, data, &reply); 160edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return reply.readStrongBinder(); 161edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 162edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 163a94f129a7bbaa8ea45c50e49ba3e6127ca2a15ecDianne Hackborn virtual status_t addService(const String16& name, const sp<IBinder>& service, 164a94f129a7bbaa8ea45c50e49ba3e6127ca2a15ecDianne Hackborn bool allowIsolated) 165edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 166edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 167edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor()); 168edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeString16(name); 169edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeStrongBinder(service); 170a94f129a7bbaa8ea45c50e49ba3e6127ca2a15ecDianne Hackborn data.writeInt32(allowIsolated ? 1 : 0); 171edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t err = remote()->transact(ADD_SERVICE_TRANSACTION, data, &reply); 172837a0d0fb2c3fba8082d47d04cb6120af1eb9a54Brad Fitzpatrick return err == NO_ERROR ? reply.readExceptionCode() : err; 173edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 174edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 175edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project virtual Vector<String16> listServices() 176edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project { 177edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Vector<String16> res; 178edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project int n = 0; 179edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 180edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project for (;;) { 181edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Parcel data, reply; 182edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor()); 183edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project data.writeInt32(n++); 184edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project status_t err = remote()->transact(LIST_SERVICES_TRANSACTION, data, &reply); 185edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project if (err != NO_ERROR) 186edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project break; 187edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project res.add(reply.readString16()); 188edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 189edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return res; 190edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 191edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; 192edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 193edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectIMPLEMENT_META_INTERFACE(ServiceManager, "android.os.IServiceManager"); 194edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 195edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 196