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gerrit.omnirom.org / android_frameworks_av / 37fa82fa798959ad3b14b9486ce0695291f66af2 / . / services / camera / libcameraservice / CameraService.cpp
blob: c812cd76d597f65b14616882459051c2d826bab1 [file] [log] [blame]
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "CameraService"
#define ATRACE_TAG ATRACE_TAG_CAMERA
//#define LOG_NDEBUG 0
#include <algorithm>
#include <climits>
#include <stdio.h>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <string>
#include <sys/types.h>
#include <inttypes.h>
#include <pthread.h>
#include <poll.h>
#include <android/hardware/ICamera.h>
#include <android/hardware/ICameraClient.h>
#include <aidl/AidlCameraService.h>
#include <android-base/macros.h>
#include <android-base/parseint.h>
#include <android-base/stringprintf.h>
#include <android/permission/PermissionChecker.h>
#include <binder/ActivityManager.h>
#include <binder/AppOpsManager.h>
#include <binder/IPCThreadState.h>
#include <binder/MemoryBase.h>
#include <binder/MemoryHeapBase.h>
#include <binder/PermissionController.h>
#include <binder/IResultReceiver.h>
#include <binderthreadstate/CallerUtils.h>
#include <cutils/atomic.h>
#include <cutils/properties.h>
#include <cutils/misc.h>
#include <gui/Surface.h>
#include <hardware/hardware.h>
#include "hidl/HidlCameraService.h"
#include <hidl/HidlTransportSupport.h>
#include <hwbinder/IPCThreadState.h>
#include <memunreachable/memunreachable.h>
#include <media/AudioSystem.h>
#include <media/IMediaHTTPService.h>
#include <media/mediaplayer.h>
#include <mediautils/BatteryNotifier.h>
#include <processinfo/ProcessInfoService.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/String16.h>
#include <utils/SystemClock.h>
#include <utils/Trace.h>
#include <utils/CallStack.h>
#include <private/android_filesystem_config.h>
#include <system/camera_vendor_tags.h>
#include <system/camera_metadata.h>
#include <system/camera.h>
#include "CameraService.h"
#include "api1/Camera2Client.h"
#include "api2/CameraDeviceClient.h"
#include "utils/CameraTraces.h"
#include "utils/TagMonitor.h"
#include "utils/CameraThreadState.h"
#include "utils/CameraServiceProxyWrapper.h"
namespace {
const char* kPermissionServiceName = "permission";
const char* kActivityServiceName = "activity";
const char* kSensorPrivacyServiceName = "sensor_privacy";
const char* kAppopsServiceName = "appops";
}; // namespace anonymous
namespace android {
using base::StringPrintf;
using binder::Status;
using namespace camera3;
using frameworks::cameraservice::service::V2_0::implementation::HidlCameraService;
using frameworks::cameraservice::service::implementation::AidlCameraService;
using hardware::ICamera;
using hardware::ICameraClient;
using hardware::ICameraServiceListener;
using hardware::camera2::ICameraInjectionCallback;
using hardware::camera2::ICameraInjectionSession;
using hardware::camera2::utils::CameraIdAndSessionConfiguration;
using hardware::camera2::utils::ConcurrentCameraIdCombination;
// ----------------------------------------------------------------------------
// Logging support -- this is for debugging only
// Use "adb shell dumpsys media.camera -v 1" to change it.
volatile int32_t gLogLevel = 0;
#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
static void setLogLevel(int level) {
android_atomic_write(level, &gLogLevel);
}
// Convenience methods for constructing binder::Status objects for error returns
#define STATUS_ERROR(errorCode, errorString) \
binder::Status::fromServiceSpecificError(errorCode, \
String8::format("%s:%d: %s", __FUNCTION__, __LINE__, errorString))
#define STATUS_ERROR_FMT(errorCode, errorString, ...) \
binder::Status::fromServiceSpecificError(errorCode, \
String8::format("%s:%d: " errorString, __FUNCTION__, __LINE__, \
__VA_ARGS__))
// ----------------------------------------------------------------------------
static const String16 sDumpPermission("android.permission.DUMP");
static const String16 sManageCameraPermission("android.permission.MANAGE_CAMERA");
static const String16 sCameraPermission("android.permission.CAMERA");
static const String16 sSystemCameraPermission("android.permission.SYSTEM_CAMERA");
static const String16
sCameraSendSystemEventsPermission("android.permission.CAMERA_SEND_SYSTEM_EVENTS");
static const String16 sCameraOpenCloseListenerPermission(
"android.permission.CAMERA_OPEN_CLOSE_LISTENER");
static const String16
sCameraInjectExternalCameraPermission("android.permission.CAMERA_INJECT_EXTERNAL_CAMERA");
const char *sFileName = "lastOpenSessionDumpFile";
static constexpr int32_t kSystemNativeClientScore = resource_policy::PERCEPTIBLE_APP_ADJ;
static constexpr int32_t kSystemNativeClientState =
ActivityManager::PROCESS_STATE_PERSISTENT_UI;
const String8 CameraService::kOfflineDevice("offline-");
const String16 CameraService::kWatchAllClientsFlag("all");
// Set to keep track of logged service error events.
static std::set<String8> sServiceErrorEventSet;
CameraService::CameraService(
std::shared_ptr<CameraServiceProxyWrapper> cameraServiceProxyWrapper) :
mCameraServiceProxyWrapper(cameraServiceProxyWrapper == nullptr ?
std::make_shared<CameraServiceProxyWrapper>() : cameraServiceProxyWrapper),
mEventLog(DEFAULT_EVENT_LOG_LENGTH),
mNumberOfCameras(0),
mNumberOfCamerasWithoutSystemCamera(0),
mSoundRef(0), mInitialized(false),
mAudioRestriction(hardware::camera2::ICameraDeviceUser::AUDIO_RESTRICTION_NONE) {
ALOGI("CameraService started (pid=%d)", getpid());
mServiceLockWrapper = std::make_shared<WaitableMutexWrapper>(&mServiceLock);
mMemFd = memfd_create(sFileName, MFD_ALLOW_SEALING);
if (mMemFd == -1) {
ALOGE("%s: Error while creating the file: %s", __FUNCTION__, sFileName);
}
}
// The word 'System' here does not refer to clients only on the system
// partition. They just need to have a android system uid.
static bool doesClientHaveSystemUid() {
return (CameraThreadState::getCallingUid() < AID_APP_START);
}
// Enable processes with isolated AID to request the binder
void CameraService::instantiate() {
CameraService::publish(true);
}
void CameraService::onServiceRegistration(const String16& name, const sp<IBinder>&) {
if (name != String16(kAppopsServiceName)) {
return;
}
ALOGV("appops service registered. setting camera audio restriction");
mAppOps.setCameraAudioRestriction(mAudioRestriction);
}
void CameraService::onFirstRef()
{
ALOGI("CameraService process starting");
BnCameraService::onFirstRef();
// Update battery life tracking if service is restarting
BatteryNotifier& notifier(BatteryNotifier::getInstance());
notifier.noteResetCamera();
notifier.noteResetFlashlight();
status_t res = INVALID_OPERATION;
res = enumerateProviders();
if (res == OK) {
mInitialized = true;
}
mUidPolicy = new UidPolicy(this);
mUidPolicy->registerSelf();
mSensorPrivacyPolicy = new SensorPrivacyPolicy(this);
mSensorPrivacyPolicy->registerSelf();
mInjectionStatusListener = new InjectionStatusListener(this);
// appops function setCamerAudioRestriction uses getService which
// is blocking till the appops service is ready. To enable early
// boot availability for cameraservice, use checkService which is
// non blocking and register for notifications
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder = sm->checkService(String16(kAppopsServiceName));
if (!binder) {
sm->registerForNotifications(String16(kAppopsServiceName), this);
} else {
mAppOps.setCameraAudioRestriction(mAudioRestriction);
}
sp<HidlCameraService> hcs = HidlCameraService::getInstance(this);
if (hcs->registerAsService() != android::OK) {
// Deprecated, so it will fail to register on newer devices
ALOGW("%s: Did not register default android.frameworks.cameraservice.service@2.2",
__FUNCTION__);
}
if (!AidlCameraService::registerService(this)) {
ALOGE("%s: Failed to register default AIDL VNDK CameraService", __FUNCTION__);
}
// This needs to be last call in this function, so that it's as close to
// ServiceManager::addService() as possible.
mCameraServiceProxyWrapper->pingCameraServiceProxy();
ALOGI("CameraService pinged cameraservice proxy");
}
status_t CameraService::enumerateProviders() {
status_t res;
std::vector<std::string> deviceIds;
std::unordered_map<std::string, std::set<std::string>> unavailPhysicalIds;
{
Mutex::Autolock l(mServiceLock);
if (nullptr == mCameraProviderManager.get()) {
mCameraProviderManager = new CameraProviderManager();
res = mCameraProviderManager->initialize(this);
if (res != OK) {
ALOGE("%s: Unable to initialize camera provider manager: %s (%d)",
__FUNCTION__, strerror(-res), res);
logServiceError(String8::format("Unable to initialize camera provider manager"),
ERROR_DISCONNECTED);
return res;
}
}
// Setup vendor tags before we call get_camera_info the first time
// because HAL might need to setup static vendor keys in get_camera_info
// TODO: maybe put this into CameraProviderManager::initialize()?
mCameraProviderManager->setUpVendorTags();
if (nullptr == mFlashlight.get()) {
mFlashlight = new CameraFlashlight(mCameraProviderManager, this);
}
res = mFlashlight->findFlashUnits();
if (res != OK) {
ALOGE("Failed to enumerate flash units: %s (%d)", strerror(-res), res);
}
deviceIds = mCameraProviderManager->getCameraDeviceIds(&unavailPhysicalIds);
}
for (auto& cameraId : deviceIds) {
String8 id8 = String8(cameraId.c_str());
if (getCameraState(id8) == nullptr) {
onDeviceStatusChanged(id8, CameraDeviceStatus::PRESENT);
}
if (unavailPhysicalIds.count(cameraId) > 0) {
for (const auto& physicalId : unavailPhysicalIds[cameraId]) {
String8 physicalId8 = String8(physicalId.c_str());
onDeviceStatusChanged(id8, physicalId8, CameraDeviceStatus::NOT_PRESENT);
}
}
}
// Derive primary rear/front cameras, and filter their charactierstics.
// This needs to be done after all cameras are enumerated and camera ids are sorted.
if (SessionConfigurationUtils::IS_PERF_CLASS) {
// Assume internal cameras are advertised from the same
// provider. If multiple providers are registered at different time,
// and each provider contains multiple internal color cameras, the current
// logic may filter the characteristics of more than one front/rear color
// cameras.
Mutex::Autolock l(mServiceLock);
filterSPerfClassCharacteristicsLocked();
}
return OK;
}
void CameraService::broadcastTorchModeStatus(const String8& cameraId, TorchModeStatus status,
SystemCameraKind systemCameraKind) {
Mutex::Autolock lock(mStatusListenerLock);
for (auto& i : mListenerList) {
if (shouldSkipStatusUpdates(systemCameraKind, i->isVendorListener(), i->getListenerPid(),
i->getListenerUid())) {
ALOGV("Skipping torch callback for system-only camera device %s",
cameraId.c_str());
continue;
}
auto ret = i->getListener()->onTorchStatusChanged(mapToInterface(status),
String16{cameraId});
i->handleBinderStatus(ret, "%s: Failed to trigger onTorchStatusChanged for %d:%d: %d",
__FUNCTION__, i->getListenerUid(), i->getListenerPid(), ret.exceptionCode());
}
}
CameraService::~CameraService() {
VendorTagDescriptor::clearGlobalVendorTagDescriptor();
mUidPolicy->unregisterSelf();
mSensorPrivacyPolicy->unregisterSelf();
mInjectionStatusListener->removeListener();
}
void CameraService::onNewProviderRegistered() {
enumerateProviders();
}
void CameraService::filterAPI1SystemCameraLocked(
const std::vector<std::string> &normalDeviceIds) {
mNormalDeviceIdsWithoutSystemCamera.clear();
for (auto &deviceId : normalDeviceIds) {
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(String8(deviceId.c_str()), &deviceKind) != OK) {
ALOGE("%s: Invalid camera id %s, skipping", __FUNCTION__, deviceId.c_str());
continue;
}
if (deviceKind == SystemCameraKind::SYSTEM_ONLY_CAMERA) {
// All system camera ids will necessarily come after public camera
// device ids as per the HAL interface contract.
break;
}
mNormalDeviceIdsWithoutSystemCamera.push_back(deviceId);
}
ALOGV("%s: number of API1 compatible public cameras is %zu", __FUNCTION__,
mNormalDeviceIdsWithoutSystemCamera.size());
}
status_t CameraService::getSystemCameraKind(const String8& cameraId, SystemCameraKind *kind) const {
auto state = getCameraState(cameraId);
if (state != nullptr) {
*kind = state->getSystemCameraKind();
return OK;
}
// Hidden physical camera ids won't have CameraState
return mCameraProviderManager->getSystemCameraKind(cameraId.c_str(), kind);
}
void CameraService::updateCameraNumAndIds() {
Mutex::Autolock l(mServiceLock);
std::pair<int, int> systemAndNonSystemCameras = mCameraProviderManager->getCameraCount();
// Excludes hidden secure cameras
mNumberOfCameras =
systemAndNonSystemCameras.first + systemAndNonSystemCameras.second;
mNumberOfCamerasWithoutSystemCamera = systemAndNonSystemCameras.second;
mNormalDeviceIds =
mCameraProviderManager->getAPI1CompatibleCameraDeviceIds();
filterAPI1SystemCameraLocked(mNormalDeviceIds);
}
void CameraService::filterSPerfClassCharacteristicsLocked() {
// To claim to be S Performance primary cameras, the cameras must be
// backward compatible. So performance class primary camera Ids must be API1
// compatible.
bool firstRearCameraSeen = false, firstFrontCameraSeen = false;
for (const auto& cameraId : mNormalDeviceIdsWithoutSystemCamera) {
int facing = -1;
int orientation = 0;
String8 cameraId8(cameraId.c_str());
int portraitRotation;
getDeviceVersion(cameraId8, /*overrideToPortrait*/false, /*out*/&portraitRotation,
/*out*/&facing, /*out*/&orientation);
if (facing == -1) {
ALOGE("%s: Unable to get camera device \"%s\" facing", __FUNCTION__, cameraId.c_str());
return;
}
if ((facing == hardware::CAMERA_FACING_BACK && !firstRearCameraSeen) ||
(facing == hardware::CAMERA_FACING_FRONT && !firstFrontCameraSeen)) {
status_t res = mCameraProviderManager->filterSmallJpegSizes(cameraId);
if (res == OK) {
mPerfClassPrimaryCameraIds.insert(cameraId);
} else {
ALOGE("%s: Failed to filter small JPEG sizes for performance class primary "
"camera %s: %s(%d)", __FUNCTION__, cameraId.c_str(), strerror(-res), res);
break;
}
if (facing == hardware::CAMERA_FACING_BACK) {
firstRearCameraSeen = true;
}
if (facing == hardware::CAMERA_FACING_FRONT) {
firstFrontCameraSeen = true;
}
}
if (firstRearCameraSeen && firstFrontCameraSeen) {
break;
}
}
}
void CameraService::addStates(const String8 id) {
std::string cameraId(id.c_str());
CameraResourceCost cost;
status_t res = mCameraProviderManager->getResourceCost(cameraId, &cost);
if (res != OK) {
ALOGE("Failed to query device resource cost: %s (%d)", strerror(-res), res);
return;
}
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
res = mCameraProviderManager->getSystemCameraKind(cameraId, &deviceKind);
if (res != OK) {
ALOGE("Failed to query device kind: %s (%d)", strerror(-res), res);
return;
}
std::vector<std::string> physicalCameraIds;
mCameraProviderManager->isLogicalCamera(cameraId, &physicalCameraIds);
std::set<String8> conflicting;
for (size_t i = 0; i < cost.conflictingDevices.size(); i++) {
conflicting.emplace(String8(cost.conflictingDevices[i].c_str()));
}
{
Mutex::Autolock lock(mCameraStatesLock);
mCameraStates.emplace(id, std::make_shared<CameraState>(id, cost.resourceCost,
conflicting, deviceKind, physicalCameraIds));
}
if (mFlashlight->hasFlashUnit(id)) {
Mutex::Autolock al(mTorchStatusMutex);
mTorchStatusMap.add(id, TorchModeStatus::AVAILABLE_OFF);
broadcastTorchModeStatus(id, TorchModeStatus::AVAILABLE_OFF, deviceKind);
}
updateCameraNumAndIds();
logDeviceAdded(id, "Device added");
}
void CameraService::removeStates(const String8 id) {
updateCameraNumAndIds();
if (mFlashlight->hasFlashUnit(id)) {
Mutex::Autolock al(mTorchStatusMutex);
mTorchStatusMap.removeItem(id);
}
{
Mutex::Autolock lock(mCameraStatesLock);
mCameraStates.erase(id);
}
}
void CameraService::onDeviceStatusChanged(const String8& id,
CameraDeviceStatus newHalStatus) {
ALOGI("%s: Status changed for cameraId=%s, newStatus=%d", __FUNCTION__,
id.string(), newHalStatus);
StatusInternal newStatus = mapToInternal(newHalStatus);
std::shared_ptr<CameraState> state = getCameraState(id);
if (state == nullptr) {
if (newStatus == StatusInternal::PRESENT) {
ALOGI("%s: Unknown camera ID %s, a new camera is added",
__FUNCTION__, id.string());
// First add as absent to make sure clients are notified below
addStates(id);
updateStatus(newStatus, id);
} else {
ALOGE("%s: Bad camera ID %s", __FUNCTION__, id.string());
}
return;
}
StatusInternal oldStatus = state->getStatus();
if (oldStatus == newStatus) {
ALOGE("%s: State transition to the same status %#x not allowed", __FUNCTION__, newStatus);
return;
}
if (newStatus == StatusInternal::NOT_PRESENT) {
logDeviceRemoved(id, String8::format("Device status changed from %d to %d", oldStatus,
newStatus));
// Set the device status to NOT_PRESENT, clients will no longer be able to connect
// to this device until the status changes
updateStatus(StatusInternal::NOT_PRESENT, id);
sp<BasicClient> clientToDisconnectOnline, clientToDisconnectOffline;
{
// Don't do this in updateStatus to avoid deadlock over mServiceLock
Mutex::Autolock lock(mServiceLock);
// Remove cached shim parameters
state->setShimParams(CameraParameters());
// Remove online as well as offline client from the list of active clients,
// if they are present
clientToDisconnectOnline = removeClientLocked(id);
clientToDisconnectOffline = removeClientLocked(kOfflineDevice + id);
}
disconnectClient(id, clientToDisconnectOnline);
disconnectClient(kOfflineDevice + id, clientToDisconnectOffline);
removeStates(id);
} else {
if (oldStatus == StatusInternal::NOT_PRESENT) {
logDeviceAdded(id, String8::format("Device status changed from %d to %d", oldStatus,
newStatus));
}
updateStatus(newStatus, id);
}
}
void CameraService::onDeviceStatusChanged(const String8& id,
const String8& physicalId,
CameraDeviceStatus newHalStatus) {
ALOGI("%s: Status changed for cameraId=%s, physicalCameraId=%s, newStatus=%d",
__FUNCTION__, id.string(), physicalId.string(), newHalStatus);
StatusInternal newStatus = mapToInternal(newHalStatus);
std::shared_ptr<CameraState> state = getCameraState(id);
if (state == nullptr) {
ALOGE("%s: Physical camera id %s status change on a non-present ID %s",
__FUNCTION__, physicalId.string(), id.string());
return;
}
StatusInternal logicalCameraStatus = state->getStatus();
if (logicalCameraStatus != StatusInternal::PRESENT &&
logicalCameraStatus != StatusInternal::NOT_AVAILABLE) {
ALOGE("%s: Physical camera id %s status %d change for an invalid logical camera state %d",
__FUNCTION__, physicalId.string(), newHalStatus, logicalCameraStatus);
return;
}
bool updated = false;
if (newStatus == StatusInternal::PRESENT) {
updated = state->removeUnavailablePhysicalId(physicalId);
} else {
updated = state->addUnavailablePhysicalId(physicalId);
}
if (updated) {
String8 idCombo = id + " : " + physicalId;
if (newStatus == StatusInternal::PRESENT) {
logDeviceAdded(idCombo,
String8::format("Device status changed to %d", newStatus));
} else {
logDeviceRemoved(idCombo,
String8::format("Device status changed to %d", newStatus));
}
// Avoid calling getSystemCameraKind() with mStatusListenerLock held (b/141756275)
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(id, &deviceKind) != OK) {
ALOGE("%s: Invalid camera id %s, skipping", __FUNCTION__, id.string());
return;
}
String16 id16(id), physicalId16(physicalId);
Mutex::Autolock lock(mStatusListenerLock);
for (auto& listener : mListenerList) {
if (shouldSkipStatusUpdates(deviceKind, listener->isVendorListener(),
listener->getListenerPid(), listener->getListenerUid())) {
ALOGV("Skipping discovery callback for system-only camera device %s",
id.c_str());
continue;
}
auto ret = listener->getListener()->onPhysicalCameraStatusChanged(
mapToInterface(newStatus), id16, physicalId16);
listener->handleBinderStatus(ret,
"%s: Failed to trigger onPhysicalCameraStatusChanged for %d:%d: %d",
__FUNCTION__, listener->getListenerUid(), listener->getListenerPid(),
ret.exceptionCode());
}
}
}
void CameraService::disconnectClient(const String8& id, sp<BasicClient> clientToDisconnect) {
if (clientToDisconnect.get() != nullptr) {
ALOGI("%s: Client for camera ID %s evicted due to device status change from HAL",
__FUNCTION__, id.string());
// Notify the client of disconnection
clientToDisconnect->notifyError(
hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED,
CaptureResultExtras{});
clientToDisconnect->disconnect();
}
}
void CameraService::onTorchStatusChanged(const String8& cameraId,
TorchModeStatus newStatus) {
SystemCameraKind systemCameraKind = SystemCameraKind::PUBLIC;
status_t res = getSystemCameraKind(cameraId, &systemCameraKind);
if (res != OK) {
ALOGE("%s: Could not get system camera kind for camera id %s", __FUNCTION__,
cameraId.string());
return;
}
Mutex::Autolock al(mTorchStatusMutex);
onTorchStatusChangedLocked(cameraId, newStatus, systemCameraKind);
}
void CameraService::onTorchStatusChanged(const String8& cameraId,
TorchModeStatus newStatus, SystemCameraKind systemCameraKind) {
Mutex::Autolock al(mTorchStatusMutex);
onTorchStatusChangedLocked(cameraId, newStatus, systemCameraKind);
}
void CameraService::broadcastTorchStrengthLevel(const String8& cameraId,
int32_t newStrengthLevel) {
Mutex::Autolock lock(mStatusListenerLock);
for (auto& i : mListenerList) {
auto ret = i->getListener()->onTorchStrengthLevelChanged(String16{cameraId},
newStrengthLevel);
i->handleBinderStatus(ret,
"%s: Failed to trigger onTorchStrengthLevelChanged for %d:%d: %d", __FUNCTION__,
i->getListenerUid(), i->getListenerPid(), ret.exceptionCode());
}
}
void CameraService::onTorchStatusChangedLocked(const String8& cameraId,
TorchModeStatus newStatus, SystemCameraKind systemCameraKind) {
ALOGI("%s: Torch status changed for cameraId=%s, newStatus=%d",
__FUNCTION__, cameraId.string(), newStatus);
TorchModeStatus status;
status_t res = getTorchStatusLocked(cameraId, &status);
if (res) {
ALOGE("%s: cannot get torch status of camera %s: %s (%d)",
__FUNCTION__, cameraId.string(), strerror(-res), res);
return;
}
if (status == newStatus) {
return;
}
res = setTorchStatusLocked(cameraId, newStatus);
if (res) {
ALOGE("%s: Failed to set the torch status to %d: %s (%d)", __FUNCTION__,
(uint32_t)newStatus, strerror(-res), res);
return;
}
{
// Update battery life logging for flashlight
Mutex::Autolock al(mTorchUidMapMutex);
auto iter = mTorchUidMap.find(cameraId);
if (iter != mTorchUidMap.end()) {
int oldUid = iter->second.second;
int newUid = iter->second.first;
BatteryNotifier& notifier(BatteryNotifier::getInstance());
if (oldUid != newUid) {
// If the UID has changed, log the status and update current UID in mTorchUidMap
if (status == TorchModeStatus::AVAILABLE_ON) {
notifier.noteFlashlightOff(cameraId, oldUid);
}
if (newStatus == TorchModeStatus::AVAILABLE_ON) {
notifier.noteFlashlightOn(cameraId, newUid);
}
iter->second.second = newUid;
} else {
// If the UID has not changed, log the status
if (newStatus == TorchModeStatus::AVAILABLE_ON) {
notifier.noteFlashlightOn(cameraId, oldUid);
} else {
notifier.noteFlashlightOff(cameraId, oldUid);
}
}
}
}
broadcastTorchModeStatus(cameraId, newStatus, systemCameraKind);
}
static bool hasPermissionsForSystemCamera(int callingPid, int callingUid) {
permission::PermissionChecker permissionChecker;
AttributionSourceState attributionSource{};
attributionSource.pid = callingPid;
attributionSource.uid = callingUid;
bool checkPermissionForSystemCamera = permissionChecker.checkPermissionForPreflight(
sSystemCameraPermission, attributionSource, String16(), AppOpsManager::OP_NONE)
!= permission::PermissionChecker::PERMISSION_HARD_DENIED;
bool checkPermissionForCamera = permissionChecker.checkPermissionForPreflight(
sCameraPermission, attributionSource, String16(), AppOpsManager::OP_NONE)
!= permission::PermissionChecker::PERMISSION_HARD_DENIED;
return checkPermissionForSystemCamera && checkPermissionForCamera;
}
Status CameraService::getNumberOfCameras(int32_t type, int32_t* numCameras) {
ATRACE_CALL();
Mutex::Autolock l(mServiceLock);
bool hasSystemCameraPermissions =
hasPermissionsForSystemCamera(CameraThreadState::getCallingPid(),
CameraThreadState::getCallingUid());
switch (type) {
case CAMERA_TYPE_BACKWARD_COMPATIBLE:
if (hasSystemCameraPermissions) {
*numCameras = static_cast<int>(mNormalDeviceIds.size());
} else {
*numCameras = static_cast<int>(mNormalDeviceIdsWithoutSystemCamera.size());
}
break;
case CAMERA_TYPE_ALL:
if (hasSystemCameraPermissions) {
*numCameras = mNumberOfCameras;
} else {
*numCameras = mNumberOfCamerasWithoutSystemCamera;
}
break;
default:
ALOGW("%s: Unknown camera type %d",
__FUNCTION__, type);
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Unknown camera type %d", type);
}
return Status::ok();
}
Status CameraService::getCameraInfo(int cameraId, bool overrideToPortrait,
CameraInfo* cameraInfo) {
ATRACE_CALL();
Mutex::Autolock l(mServiceLock);
std::string cameraIdStr = cameraIdIntToStrLocked(cameraId);
if (shouldRejectSystemCameraConnection(String8(cameraIdStr.c_str()))) {
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to retrieve camera"
"characteristics for system only device %s: ", cameraIdStr.c_str());
}
if (!mInitialized) {
logServiceError(String8::format("Camera subsystem is not available"),ERROR_DISCONNECTED);
return STATUS_ERROR(ERROR_DISCONNECTED,
"Camera subsystem is not available");
}
bool hasSystemCameraPermissions =
hasPermissionsForSystemCamera(CameraThreadState::getCallingPid(),
CameraThreadState::getCallingUid());
int cameraIdBound = mNumberOfCamerasWithoutSystemCamera;
if (hasSystemCameraPermissions) {
cameraIdBound = mNumberOfCameras;
}
if (cameraId < 0 || cameraId >= cameraIdBound) {
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT,
"CameraId is not valid");
}
Status ret = Status::ok();
int portraitRotation;
status_t err = mCameraProviderManager->getCameraInfo(
cameraIdStr.c_str(), overrideToPortrait, &portraitRotation, cameraInfo);
if (err != OK) {
ret = STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Error retrieving camera info from device %d: %s (%d)", cameraId,
strerror(-err), err);
logServiceError(String8::format("Error retrieving camera info from device %d",cameraId),
ERROR_INVALID_OPERATION);
}
return ret;
}
std::string CameraService::cameraIdIntToStrLocked(int cameraIdInt) {
const std::vector<std::string> *deviceIds = &mNormalDeviceIdsWithoutSystemCamera;
auto callingPid = CameraThreadState::getCallingPid();
auto callingUid = CameraThreadState::getCallingUid();
permission::PermissionChecker permissionChecker;
AttributionSourceState attributionSource{};
attributionSource.pid = callingPid;
attributionSource.uid = callingUid;
bool checkPermissionForSystemCamera = permissionChecker.checkPermissionForPreflight(
sSystemCameraPermission, attributionSource, String16(), AppOpsManager::OP_NONE)
!= permission::PermissionChecker::PERMISSION_HARD_DENIED;
if (checkPermissionForSystemCamera || getpid() == callingPid) {
deviceIds = &mNormalDeviceIds;
}
if (cameraIdInt < 0 || cameraIdInt >= static_cast<int>(deviceIds->size())) {
ALOGE("%s: input id %d invalid: valid range (0, %zu)",
__FUNCTION__, cameraIdInt, deviceIds->size());
return std::string{};
}
return (*deviceIds)[cameraIdInt];
}
String8 CameraService::cameraIdIntToStr(int cameraIdInt) {
Mutex::Autolock lock(mServiceLock);
return String8(cameraIdIntToStrLocked(cameraIdInt).c_str());
}
Status CameraService::getCameraCharacteristics(const String16& cameraId,
int targetSdkVersion, bool overrideToPortrait, CameraMetadata* cameraInfo) {
ATRACE_CALL();
if (!cameraInfo) {
ALOGE("%s: cameraInfo is NULL", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "cameraInfo is NULL");
}
if (!mInitialized) {
ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
logServiceError(String8::format("Camera subsystem is not available"),ERROR_DISCONNECTED);
return STATUS_ERROR(ERROR_DISCONNECTED,
"Camera subsystem is not available");;
}
if (shouldRejectSystemCameraConnection(String8(cameraId))) {
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to retrieve camera"
"characteristics for system only device %s: ", String8(cameraId).string());
}
Status ret{};
std::string cameraIdStr = String8(cameraId).string();
bool overrideForPerfClass =
SessionConfigurationUtils::targetPerfClassPrimaryCamera(mPerfClassPrimaryCameraIds,
cameraIdStr, targetSdkVersion);
status_t res = mCameraProviderManager->getCameraCharacteristics(
cameraIdStr, overrideForPerfClass, cameraInfo, overrideToPortrait);
if (res != OK) {
if (res == NAME_NOT_FOUND) {
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, "Unable to retrieve camera "
"characteristics for unknown device %s: %s (%d)", String8(cameraId).string(),
strerror(-res), res);
} else {
logServiceError(String8::format("Unable to retrieve camera characteristics for "
"device %s.", String8(cameraId).string()),ERROR_INVALID_OPERATION);
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to retrieve camera "
"characteristics for device %s: %s (%d)", String8(cameraId).string(),
strerror(-res), res);
}
}
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(String8(cameraId), &deviceKind) != OK) {
ALOGE("%s: Invalid camera id %s, skipping", __FUNCTION__, String8(cameraId).string());
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to retrieve camera kind "
"for device %s", String8(cameraId).string());
}
int callingPid = CameraThreadState::getCallingPid();
int callingUid = CameraThreadState::getCallingUid();
std::vector<int32_t> tagsRemoved;
// If it's not calling from cameraserver, check the permission only if
// android.permission.CAMERA is required. If android.permission.SYSTEM_CAMERA was needed,
// it would've already been checked in shouldRejectSystemCameraConnection.
permission::PermissionChecker permissionChecker;
AttributionSourceState attributionSource{};
attributionSource.pid = callingPid;
attributionSource.uid = callingUid;
bool checkPermissionForCamera = permissionChecker.checkPermissionForPreflight(
sCameraPermission, attributionSource, String16(), AppOpsManager::OP_NONE)
!= permission::PermissionChecker::PERMISSION_HARD_DENIED;
if ((callingPid != getpid()) &&
(deviceKind != SystemCameraKind::SYSTEM_ONLY_CAMERA) &&
!checkPermissionForCamera) {
res = cameraInfo->removePermissionEntries(
mCameraProviderManager->getProviderTagIdLocked(String8(cameraId).string()),
&tagsRemoved);
if (res != OK) {
cameraInfo->clear();
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Failed to remove camera"
" characteristics needing camera permission for device %s: %s (%d)",
String8(cameraId).string(), strerror(-res), res);
}
}
if (!tagsRemoved.empty()) {
res = cameraInfo->update(ANDROID_REQUEST_CHARACTERISTIC_KEYS_NEEDING_PERMISSION,
tagsRemoved.data(), tagsRemoved.size());
if (res != OK) {
cameraInfo->clear();
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Failed to insert camera "
"keys needing permission for device %s: %s (%d)", String8(cameraId).string(),
strerror(-res), res);
}
}
return ret;
}
Status CameraService::getTorchStrengthLevel(const String16& cameraId,
int32_t* torchStrength) {
ATRACE_CALL();
Mutex::Autolock l(mServiceLock);
if (!mInitialized) {
ALOGE("%s: Camera HAL couldn't be initialized.", __FUNCTION__);
return STATUS_ERROR(ERROR_DISCONNECTED, "Camera HAL couldn't be initialized.");
}
if(torchStrength == NULL) {
ALOGE("%s: strength level must not be null.", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Strength level should not be null.");
}
status_t res = mCameraProviderManager->getTorchStrengthLevel(String8(cameraId).string(),
torchStrength);
if (res != OK) {
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to retrieve torch "
"strength level for device %s: %s (%d)", String8(cameraId).string(),
strerror(-res), res);
}
ALOGI("%s: Torch strength level is: %d", __FUNCTION__, *torchStrength);
return Status::ok();
}
String8 CameraService::getFormattedCurrentTime() {
time_t now = time(nullptr);
char formattedTime[64];
strftime(formattedTime, sizeof(formattedTime), "%m-%d %H:%M:%S", localtime(&now));
return String8(formattedTime);
}
Status CameraService::getCameraVendorTagDescriptor(
/*out*/
hardware::camera2::params::VendorTagDescriptor* desc) {
ATRACE_CALL();
if (!mInitialized) {
ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
return STATUS_ERROR(ERROR_DISCONNECTED, "Camera subsystem not available");
}
sp<VendorTagDescriptor> globalDescriptor = VendorTagDescriptor::getGlobalVendorTagDescriptor();
if (globalDescriptor != nullptr) {
*desc = *(globalDescriptor.get());
}
return Status::ok();
}
Status CameraService::getCameraVendorTagCache(
/*out*/ hardware::camera2::params::VendorTagDescriptorCache* cache) {
ATRACE_CALL();
if (!mInitialized) {
ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
return STATUS_ERROR(ERROR_DISCONNECTED,
"Camera subsystem not available");
}
sp<VendorTagDescriptorCache> globalCache =
VendorTagDescriptorCache::getGlobalVendorTagCache();
if (globalCache != nullptr) {
*cache = *(globalCache.get());
}
return Status::ok();
}
void CameraService::clearCachedVariables() {
BasicClient::BasicClient::sCameraService = nullptr;
}
std::pair<int, IPCTransport> CameraService::getDeviceVersion(const String8& cameraId,
bool overrideToPortrait, int* portraitRotation, int* facing, int* orientation) {
ATRACE_CALL();
int deviceVersion = 0;
status_t res;
hardware::hidl_version maxVersion{0,0};
IPCTransport transport = IPCTransport::INVALID;
res = mCameraProviderManager->getHighestSupportedVersion(cameraId.string(),
&maxVersion, &transport);
if (res != OK || transport == IPCTransport::INVALID) {
ALOGE("%s: Unable to get highest supported version for camera id %s", __FUNCTION__,
cameraId.string());
return std::make_pair(-1, IPCTransport::INVALID) ;
}
deviceVersion = HARDWARE_DEVICE_API_VERSION(maxVersion.get_major(), maxVersion.get_minor());
hardware::CameraInfo info;
if (facing) {
res = mCameraProviderManager->getCameraInfo(cameraId.string(), overrideToPortrait,
portraitRotation, &info);
if (res != OK) {
return std::make_pair(-1, IPCTransport::INVALID);
}
*facing = info.facing;
if (orientation) {
*orientation = info.orientation;
}
}
return std::make_pair(deviceVersion, transport);
}
Status CameraService::filterGetInfoErrorCode(status_t err) {
switch(err) {
case NO_ERROR:
return Status::ok();
case BAD_VALUE:
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT,
"CameraId is not valid for HAL module");
case NO_INIT:
return STATUS_ERROR(ERROR_DISCONNECTED,
"Camera device not available");
default:
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Camera HAL encountered error %d: %s",
err, strerror(-err));
}
}
Status CameraService::makeClient(const sp<CameraService>& cameraService,
const sp<IInterface>& cameraCb, const String16& packageName, bool systemNativeClient,
const std::optional<String16>& featureId, const String8& cameraId,
int api1CameraId, int facing, int sensorOrientation, int clientPid, uid_t clientUid,
int servicePid, std::pair<int, IPCTransport> deviceVersionAndTransport,
apiLevel effectiveApiLevel, bool overrideForPerfClass, bool overrideToPortrait,
/*out*/sp<BasicClient>* client) {
// For HIDL devices
if (deviceVersionAndTransport.second == IPCTransport::HIDL) {
// Create CameraClient based on device version reported by the HAL.
int deviceVersion = deviceVersionAndTransport.first;
switch(deviceVersion) {
case CAMERA_DEVICE_API_VERSION_1_0:
ALOGE("Camera using old HAL version: %d", deviceVersion);
return STATUS_ERROR_FMT(ERROR_DEPRECATED_HAL,
"Camera device \"%s\" HAL version %d no longer supported",
cameraId.string(), deviceVersion);
break;
case CAMERA_DEVICE_API_VERSION_3_0:
case CAMERA_DEVICE_API_VERSION_3_1:
case CAMERA_DEVICE_API_VERSION_3_2:
case CAMERA_DEVICE_API_VERSION_3_3:
case CAMERA_DEVICE_API_VERSION_3_4:
case CAMERA_DEVICE_API_VERSION_3_5:
case CAMERA_DEVICE_API_VERSION_3_6:
case CAMERA_DEVICE_API_VERSION_3_7:
break;
default:
// Should not be reachable
ALOGE("Unknown camera device HAL version: %d", deviceVersion);
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Camera device \"%s\" has unknown HAL version %d",
cameraId.string(), deviceVersion);
}
}
if (effectiveApiLevel == API_1) { // Camera1 API route
sp<ICameraClient> tmp = static_cast<ICameraClient*>(cameraCb.get());
*client = new Camera2Client(cameraService, tmp, cameraService->mCameraServiceProxyWrapper,
packageName, featureId, cameraId, api1CameraId, facing, sensorOrientation,
clientPid, clientUid, servicePid, overrideForPerfClass, overrideToPortrait);
ALOGI("%s: Camera1 API (legacy), override to portrait %d", __FUNCTION__,
overrideToPortrait);
} else { // Camera2 API route
sp<hardware::camera2::ICameraDeviceCallbacks> tmp =
static_cast<hardware::camera2::ICameraDeviceCallbacks*>(cameraCb.get());
*client = new CameraDeviceClient(cameraService, tmp,
cameraService->mCameraServiceProxyWrapper, packageName, systemNativeClient,
featureId, cameraId, facing, sensorOrientation, clientPid, clientUid, servicePid,
overrideForPerfClass, overrideToPortrait);
ALOGI("%s: Camera2 API, override to portrait %d", __FUNCTION__, overrideToPortrait);
}
return Status::ok();
}
String8 CameraService::toString(std::set<userid_t> intSet) {
String8 s("");
bool first = true;
for (userid_t i : intSet) {
if (first) {
s.appendFormat("%d", i);
first = false;
} else {
s.appendFormat(", %d", i);
}
}
return s;
}
int32_t CameraService::mapToInterface(TorchModeStatus status) {
int32_t serviceStatus = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE;
switch (status) {
case TorchModeStatus::NOT_AVAILABLE:
serviceStatus = ICameraServiceListener::TORCH_STATUS_NOT_AVAILABLE;
break;
case TorchModeStatus::AVAILABLE_OFF:
serviceStatus = ICameraServiceListener::TORCH_STATUS_AVAILABLE_OFF;
break;
case TorchModeStatus::AVAILABLE_ON:
serviceStatus = ICameraServiceListener::TORCH_STATUS_AVAILABLE_ON;
break;
default:
ALOGW("Unknown new flash status: %d", status);
}
return serviceStatus;
}
CameraService::StatusInternal CameraService::mapToInternal(CameraDeviceStatus status) {
StatusInternal serviceStatus = StatusInternal::NOT_PRESENT;
switch (status) {
case CameraDeviceStatus::NOT_PRESENT:
serviceStatus = StatusInternal::NOT_PRESENT;
break;
case CameraDeviceStatus::PRESENT:
serviceStatus = StatusInternal::PRESENT;
break;
case CameraDeviceStatus::ENUMERATING:
serviceStatus = StatusInternal::ENUMERATING;
break;
default:
ALOGW("Unknown new HAL device status: %d", status);
}
return serviceStatus;
}
int32_t CameraService::mapToInterface(StatusInternal status) {
int32_t serviceStatus = ICameraServiceListener::STATUS_NOT_PRESENT;
switch (status) {
case StatusInternal::NOT_PRESENT:
serviceStatus = ICameraServiceListener::STATUS_NOT_PRESENT;
break;
case StatusInternal::PRESENT:
serviceStatus = ICameraServiceListener::STATUS_PRESENT;
break;
case StatusInternal::ENUMERATING:
serviceStatus = ICameraServiceListener::STATUS_ENUMERATING;
break;
case StatusInternal::NOT_AVAILABLE:
serviceStatus = ICameraServiceListener::STATUS_NOT_AVAILABLE;
break;
case StatusInternal::UNKNOWN:
serviceStatus = ICameraServiceListener::STATUS_UNKNOWN;
break;
default:
ALOGW("Unknown new internal device status: %d", status);
}
return serviceStatus;
}
Status CameraService::initializeShimMetadata(int cameraId) {
int uid = CameraThreadState::getCallingUid();
String16 internalPackageName("cameraserver");
String8 id = String8::format("%d", cameraId);
Status ret = Status::ok();
sp<Client> tmp = nullptr;
if (!(ret = connectHelper<ICameraClient,Client>(
sp<ICameraClient>{nullptr}, id, cameraId,
internalPackageName, /*systemNativeClient*/ false, {}, uid, USE_CALLING_PID,
API_1, /*shimUpdateOnly*/ true, /*oomScoreOffset*/ 0,
/*targetSdkVersion*/ __ANDROID_API_FUTURE__, /*overrideToPortrait*/ true, /*out*/ tmp)
).isOk()) {
ALOGE("%s: Error initializing shim metadata: %s", __FUNCTION__, ret.toString8().string());
}
return ret;
}
Status CameraService::getLegacyParametersLazy(int cameraId,
/*out*/
CameraParameters* parameters) {
ALOGV("%s: for cameraId: %d", __FUNCTION__, cameraId);
Status ret = Status::ok();
if (parameters == NULL) {
ALOGE("%s: parameters must not be null", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Parameters must not be null");
}
String8 id = String8::format("%d", cameraId);
// Check if we already have parameters
{
// Scope for service lock
Mutex::Autolock lock(mServiceLock);
auto cameraState = getCameraState(id);
if (cameraState == nullptr) {
ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Invalid camera ID: %s", id.string());
}
CameraParameters p = cameraState->getShimParams();
if (!p.isEmpty()) {
*parameters = p;
return ret;
}
}
int64_t token = CameraThreadState::clearCallingIdentity();
ret = initializeShimMetadata(cameraId);
CameraThreadState::restoreCallingIdentity(token);
if (!ret.isOk()) {
// Error already logged by callee
return ret;
}
// Check for parameters again
{
// Scope for service lock
Mutex::Autolock lock(mServiceLock);
auto cameraState = getCameraState(id);
if (cameraState == nullptr) {
ALOGE("%s: Invalid camera ID: %s", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Invalid camera ID: %s", id.string());
}
CameraParameters p = cameraState->getShimParams();
if (!p.isEmpty()) {
*parameters = p;
return ret;
}
}
ALOGE("%s: Parameters were not initialized, or were empty. Device may not be present.",
__FUNCTION__);
return STATUS_ERROR(ERROR_INVALID_OPERATION, "Unable to initialize legacy parameters");
}
// Can camera service trust the caller based on the calling UID?
static bool isTrustedCallingUid(uid_t uid) {
switch (uid) {
case AID_MEDIA: // mediaserver
case AID_CAMERASERVER: // cameraserver
case AID_RADIO: // telephony
return true;
default:
return false;
}
}
static status_t getUidForPackage(String16 packageName, int userId, /*inout*/uid_t& uid, int err) {
PermissionController pc;
uid = pc.getPackageUid(packageName, 0);
if (uid <= 0) {
ALOGE("Unknown package: '%s'", String8(packageName).string());
dprintf(err, "Unknown package: '%s'\n", String8(packageName).string());
return BAD_VALUE;
}
if (userId < 0) {
ALOGE("Invalid user: %d", userId);
dprintf(err, "Invalid user: %d\n", userId);
return BAD_VALUE;
}
uid = multiuser_get_uid(userId, uid);
return NO_ERROR;
}
Status CameraService::validateConnectLocked(const String8& cameraId,
const String8& clientName8, /*inout*/int& clientUid, /*inout*/int& clientPid,
/*out*/int& originalClientPid) const {
#ifdef __BRILLO__
UNUSED(clientName8);
UNUSED(clientUid);
UNUSED(clientPid);
UNUSED(originalClientPid);
#else
Status allowed = validateClientPermissionsLocked(cameraId, clientName8, clientUid, clientPid,
originalClientPid);
if (!allowed.isOk()) {
return allowed;
}
#endif // __BRILLO__
int callingPid = CameraThreadState::getCallingPid();
if (!mInitialized) {
ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)",
callingPid);
return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
"No camera HAL module available to open camera device \"%s\"", cameraId.string());
}
if (getCameraState(cameraId) == nullptr) {
ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid,
cameraId.string());
return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
"No camera device with ID \"%s\" available", cameraId.string());
}
status_t err = checkIfDeviceIsUsable(cameraId);
if (err != NO_ERROR) {
switch(err) {
case -ENODEV:
case -EBUSY:
return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
"No camera device with ID \"%s\" currently available", cameraId.string());
default:
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Unknown error connecting to ID \"%s\"", cameraId.string());
}
}
return Status::ok();
}
Status CameraService::validateClientPermissionsLocked(const String8& cameraId,
const String8& clientName8, int& clientUid, int& clientPid,
/*out*/int& originalClientPid) const {
permission::PermissionChecker permissionChecker;
AttributionSourceState attributionSource{};
int callingPid = CameraThreadState::getCallingPid();
int callingUid = CameraThreadState::getCallingUid();
// Check if we can trust clientUid
if (clientUid == USE_CALLING_UID) {
clientUid = callingUid;
} else if (!isTrustedCallingUid(callingUid)) {
ALOGE("CameraService::connect X (calling PID %d, calling UID %d) rejected "
"(don't trust clientUid %d)", callingPid, callingUid, clientUid);
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"Untrusted caller (calling PID %d, UID %d) trying to "
"forward camera access to camera %s for client %s (PID %d, UID %d)",
callingPid, callingUid, cameraId.string(),
clientName8.string(), clientUid, clientPid);
}
// Check if we can trust clientPid
if (clientPid == USE_CALLING_PID) {
clientPid = callingPid;
} else if (!isTrustedCallingUid(callingUid)) {
ALOGE("CameraService::connect X (calling PID %d, calling UID %d) rejected "
"(don't trust clientPid %d)", callingPid, callingUid, clientPid);
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"Untrusted caller (calling PID %d, UID %d) trying to "
"forward camera access to camera %s for client %s (PID %d, UID %d)",
callingPid, callingUid, cameraId.string(),
clientName8.string(), clientUid, clientPid);
}
if (shouldRejectSystemCameraConnection(cameraId)) {
ALOGW("Attempting to connect to system-only camera id %s, connection rejected",
cameraId.c_str());
return STATUS_ERROR_FMT(ERROR_DISCONNECTED, "No camera device with ID \"%s\" is"
"available", cameraId.string());
}
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(cameraId, &deviceKind) != OK) {
ALOGE("%s: Invalid camera id %s, skipping", __FUNCTION__, cameraId.string());
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, "No camera device with ID \"%s\""
"found while trying to query device kind", cameraId.string());
}
// If it's not calling from cameraserver, check the permission if the
// device isn't a system only camera (shouldRejectSystemCameraConnection already checks for
// android.permission.SYSTEM_CAMERA for system only camera devices).
attributionSource.pid = clientPid;
attributionSource.uid = clientUid;
attributionSource.packageName = clientName8;
bool checkPermissionForCamera = permissionChecker.checkPermissionForPreflight(
sCameraPermission, attributionSource, String16(), AppOpsManager::OP_NONE)
!= permission::PermissionChecker::PERMISSION_HARD_DENIED;
if (callingPid != getpid() &&
(deviceKind != SystemCameraKind::SYSTEM_ONLY_CAMERA) && !checkPermissionForCamera) {
ALOGE("Permission Denial: can't use the camera pid=%d, uid=%d", clientPid, clientUid);
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"Caller \"%s\" (PID %d, UID %d) cannot open camera \"%s\" without camera permission",
clientName8.string(), clientUid, clientPid, cameraId.string());
}
// Make sure the UID is in an active state to use the camera
if (!mUidPolicy->isUidActive(callingUid, String16(clientName8))) {
int32_t procState = mUidPolicy->getProcState(callingUid);
ALOGE("Access Denial: can't use the camera from an idle UID pid=%d, uid=%d",
clientPid, clientUid);
return STATUS_ERROR_FMT(ERROR_DISABLED,
"Caller \"%s\" (PID %d, UID %d) cannot open camera \"%s\" from background ("
"calling UID %d proc state %" PRId32 ")",
clientName8.string(), clientUid, clientPid, cameraId.string(),
callingUid, procState);
}
// If sensor privacy is enabled then prevent access to the camera
if (mSensorPrivacyPolicy->isSensorPrivacyEnabled()) {
ALOGE("Access Denial: cannot use the camera when sensor privacy is enabled");
return STATUS_ERROR_FMT(ERROR_DISABLED,
"Caller \"%s\" (PID %d, UID %d) cannot open camera \"%s\" when sensor privacy "
"is enabled", clientName8.string(), clientUid, clientPid, cameraId.string());
}
// Only use passed in clientPid to check permission. Use calling PID as the client PID that's
// connected to camera service directly.
originalClientPid = clientPid;
clientPid = callingPid;
userid_t clientUserId = multiuser_get_user_id(clientUid);
// For non-system clients : Only allow clients who are being used by the current foreground
// device user, unless calling from our own process.
if (!doesClientHaveSystemUid() && callingPid != getpid() &&
(mAllowedUsers.find(clientUserId) == mAllowedUsers.end())) {
ALOGE("CameraService::connect X (PID %d) rejected (cannot connect from "
"device user %d, currently allowed device users: %s)", callingPid, clientUserId,
toString(mAllowedUsers).string());
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"Callers from device user %d are not currently allowed to connect to camera \"%s\"",
clientUserId, cameraId.string());
}
return Status::ok();
}
status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const {
auto cameraState = getCameraState(cameraId);
int callingPid = CameraThreadState::getCallingPid();
if (cameraState == nullptr) {
ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid,
cameraId.string());
return -ENODEV;
}
StatusInternal currentStatus = cameraState->getStatus();
if (currentStatus == StatusInternal::NOT_PRESENT) {
ALOGE("CameraService::connect X (PID %d) rejected (camera %s is not connected)",
callingPid, cameraId.string());
return -ENODEV;
} else if (currentStatus == StatusInternal::ENUMERATING) {
ALOGE("CameraService::connect X (PID %d) rejected, (camera %s is initializing)",
callingPid, cameraId.string());
return -EBUSY;
}
return NO_ERROR;
}
void CameraService::finishConnectLocked(const sp<BasicClient>& client,
const CameraService::DescriptorPtr& desc, int oomScoreOffset, bool systemNativeClient) {
// Make a descriptor for the incoming client
auto clientDescriptor =
CameraService::CameraClientManager::makeClientDescriptor(client, desc,
oomScoreOffset, systemNativeClient);
auto evicted = mActiveClientManager.addAndEvict(clientDescriptor);
logConnected(desc->getKey(), static_cast<int>(desc->getOwnerId()),
String8(client->getPackageName()));
if (evicted.size() > 0) {
// This should never happen - clients should already have been removed in disconnect
for (auto& i : evicted) {
ALOGE("%s: Invalid state: Client for camera %s was not removed in disconnect",
__FUNCTION__, i->getKey().string());
}
LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, clients not evicted properly",
__FUNCTION__);
}
// And register a death notification for the client callback. Do
// this last to avoid Binder policy where a nested Binder
// transaction might be pre-empted to service the client death
// notification if the client process dies before linkToDeath is
// invoked.
sp<IBinder> remoteCallback = client->getRemote();
if (remoteCallback != nullptr) {
remoteCallback->linkToDeath(this);
}
}
status_t CameraService::handleEvictionsLocked(const String8& cameraId, int clientPid,
apiLevel effectiveApiLevel, const sp<IBinder>& remoteCallback, const String8& packageName,
int oomScoreOffset, bool systemNativeClient,
/*out*/
sp<BasicClient>* client,
std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>* partial) {
ATRACE_CALL();
status_t ret = NO_ERROR;
std::vector<DescriptorPtr> evictedClients;
DescriptorPtr clientDescriptor;
{
if (effectiveApiLevel == API_1) {
// If we are using API1, any existing client for this camera ID with the same remote
// should be returned rather than evicted to allow MediaRecorder to work properly.
auto current = mActiveClientManager.get(cameraId);
if (current != nullptr) {
auto clientSp = current->getValue();
if (clientSp.get() != nullptr) { // should never be needed
if (!clientSp->canCastToApiClient(effectiveApiLevel)) {
ALOGW("CameraService connect called with a different"
" API level, evicting prior client...");
} else if (clientSp->getRemote() == remoteCallback) {
ALOGI("CameraService::connect X (PID %d) (second call from same"
" app binder, returning the same client)", clientPid);
*client = clientSp;
return NO_ERROR;
}
}
}
}
// Get current active client PIDs
std::vector<int> ownerPids(mActiveClientManager.getAllOwners());
ownerPids.push_back(clientPid);
std::vector<int> priorityScores(ownerPids.size());
std::vector<int> states(ownerPids.size());
// Get priority scores of all active PIDs
status_t err = ProcessInfoService::getProcessStatesScoresFromPids(
ownerPids.size(), &ownerPids[0], /*out*/&states[0],
/*out*/&priorityScores[0]);
if (err != OK) {
ALOGE("%s: Priority score query failed: %d",
__FUNCTION__, err);
return err;
}
// Update all active clients' priorities
std::map<int,resource_policy::ClientPriority> pidToPriorityMap;
for (size_t i = 0; i < ownerPids.size() - 1; i++) {
pidToPriorityMap.emplace(ownerPids[i],
resource_policy::ClientPriority(priorityScores[i], states[i],
/* isVendorClient won't get copied over*/ false,
/* oomScoreOffset won't get copied over*/ 0));
}
mActiveClientManager.updatePriorities(pidToPriorityMap);
// Get state for the given cameraId
auto state = getCameraState(cameraId);
if (state == nullptr) {
ALOGE("CameraService::connect X (PID %d) rejected (no camera device with ID %s)",
clientPid, cameraId.string());
// Should never get here because validateConnectLocked should have errored out
return BAD_VALUE;
}
int32_t actualScore = priorityScores[priorityScores.size() - 1];
int32_t actualState = states[states.size() - 1];
// Make descriptor for incoming client. We store the oomScoreOffset
// since we might need it later on new handleEvictionsLocked and
// ProcessInfoService would not take that into account.
clientDescriptor = CameraClientManager::makeClientDescriptor(cameraId,
sp<BasicClient>{nullptr}, static_cast<int32_t>(state->getCost()),
state->getConflicting(), actualScore, clientPid, actualState,
oomScoreOffset, systemNativeClient);
resource_policy::ClientPriority clientPriority = clientDescriptor->getPriority();
// Find clients that would be evicted
auto evicted = mActiveClientManager.wouldEvict(clientDescriptor);
// If the incoming client was 'evicted,' higher priority clients have the camera in the
// background, so we cannot do evictions
if (std::find(evicted.begin(), evicted.end(), clientDescriptor) != evicted.end()) {
ALOGE("CameraService::connect X (PID %d) rejected (existing client(s) with higher"
" priority).", clientPid);
sp<BasicClient> clientSp = clientDescriptor->getValue();
String8 curTime = getFormattedCurrentTime();
auto incompatibleClients =
mActiveClientManager.getIncompatibleClients(clientDescriptor);
String8 msg = String8::format("%s : DENIED connect device %s client for package %s "
"(PID %d, score %d state %d) due to eviction policy", curTime.string(),
cameraId.string(), packageName.string(), clientPid,
clientPriority.getScore(), clientPriority.getState());
for (auto& i : incompatibleClients) {
msg.appendFormat("\n - Blocked by existing device %s client for package %s"
"(PID %" PRId32 ", score %" PRId32 ", state %" PRId32 ")",
i->getKey().string(),
String8{i->getValue()->getPackageName()}.string(),
i->getOwnerId(), i->getPriority().getScore(),
i->getPriority().getState());
ALOGE(" Conflicts with: Device %s, client package %s (PID %"
PRId32 ", score %" PRId32 ", state %" PRId32 ")", i->getKey().string(),
String8{i->getValue()->getPackageName()}.string(), i->getOwnerId(),
i->getPriority().getScore(), i->getPriority().getState());
}
// Log the client's attempt
Mutex::Autolock l(mLogLock);
mEventLog.add(msg);
auto current = mActiveClientManager.get(cameraId);
if (current != nullptr) {
return -EBUSY; // CAMERA_IN_USE
} else {
return -EUSERS; // MAX_CAMERAS_IN_USE
}
}
for (auto& i : evicted) {
sp<BasicClient> clientSp = i->getValue();
if (clientSp.get() == nullptr) {
ALOGE("%s: Invalid state: Null client in active client list.", __FUNCTION__);
// TODO: Remove this
LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, null client in active list",
__FUNCTION__);
mActiveClientManager.remove(i);
continue;
}
ALOGE("CameraService::connect evicting conflicting client for camera ID %s",
i->getKey().string());
evictedClients.push_back(i);
// Log the clients evicted
logEvent(String8::format("EVICT device %s client held by package %s (PID"
" %" PRId32 ", score %" PRId32 ", state %" PRId32 ")\n - Evicted by device %s client for"
" package %s (PID %d, score %" PRId32 ", state %" PRId32 ")",
i->getKey().string(), String8{clientSp->getPackageName()}.string(),
i->getOwnerId(), i->getPriority().getScore(),
i->getPriority().getState(), cameraId.string(),
packageName.string(), clientPid, clientPriority.getScore(),
clientPriority.getState()));
// Notify the client of disconnection
clientSp->notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED,
CaptureResultExtras());
}
}
// Do not hold mServiceLock while disconnecting clients, but retain the condition blocking
// other clients from connecting in mServiceLockWrapper if held
mServiceLock.unlock();
// Clear caller identity temporarily so client disconnect PID checks work correctly
int64_t token = CameraThreadState::clearCallingIdentity();
// Destroy evicted clients
for (auto& i : evictedClients) {
// Disconnect is blocking, and should only have returned when HAL has cleaned up
i->getValue()->disconnect(); // Clients will remove themselves from the active client list
}
CameraThreadState::restoreCallingIdentity(token);
for (const auto& i : evictedClients) {
ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")",
__FUNCTION__, i->getKey().string(), i->getOwnerId());
ret = mActiveClientManager.waitUntilRemoved(i, DEFAULT_DISCONNECT_TIMEOUT_NS);
if (ret == TIMED_OUT) {
ALOGE("%s: Timed out waiting for client for device %s to disconnect, "
"current clients:\n%s", __FUNCTION__, i->getKey().string(),
mActiveClientManager.toString().string());
return -EBUSY;
}
if (ret != NO_ERROR) {
ALOGE("%s: Received error waiting for client for device %s to disconnect: %s (%d), "
"current clients:\n%s", __FUNCTION__, i->getKey().string(), strerror(-ret),
ret, mActiveClientManager.toString().string());
return ret;
}
}
evictedClients.clear();
// Once clients have been disconnected, relock
mServiceLock.lock();
// Check again if the device was unplugged or something while we weren't holding mServiceLock
if ((ret = checkIfDeviceIsUsable(cameraId)) != NO_ERROR) {
return ret;
}
*partial = clientDescriptor;
return NO_ERROR;
}
Status CameraService::connect(
const sp<ICameraClient>& cameraClient,
int api1CameraId,
const String16& clientPackageName,
int clientUid,
int clientPid,
int targetSdkVersion,
bool overrideToPortrait,
/*out*/
sp<ICamera>* device) {
ATRACE_CALL();
Status ret = Status::ok();
String8 id = cameraIdIntToStr(api1CameraId);
sp<Client> client = nullptr;
ret = connectHelper<ICameraClient,Client>(cameraClient, id, api1CameraId,
clientPackageName,/*systemNativeClient*/ false, {}, clientUid, clientPid, API_1,
/*shimUpdateOnly*/ false, /*oomScoreOffset*/ 0, targetSdkVersion,
overrideToPortrait, /*out*/client);
if(!ret.isOk()) {
logRejected(id, CameraThreadState::getCallingPid(), String8(clientPackageName),
ret.toString8());
return ret;
}
*device = client;
return ret;
}
bool CameraService::shouldSkipStatusUpdates(SystemCameraKind systemCameraKind,
bool isVendorListener, int clientPid, int clientUid) {
// If the client is not a vendor client, don't add listener if
// a) the camera is a publicly hidden secure camera OR
// b) the camera is a system only camera and the client doesn't
// have android.permission.SYSTEM_CAMERA permissions.
if (!isVendorListener && (systemCameraKind == SystemCameraKind::HIDDEN_SECURE_CAMERA ||
(systemCameraKind == SystemCameraKind::SYSTEM_ONLY_CAMERA &&
!hasPermissionsForSystemCamera(clientPid, clientUid)))) {
return true;
}
return false;
}
bool CameraService::shouldRejectSystemCameraConnection(const String8& cameraId) const {
// Rules for rejection:
// 1) If cameraserver tries to access this camera device, accept the
// connection.
// 2) The camera device is a publicly hidden secure camera device AND some
// non system component is trying to access it.
// 3) if the camera device is advertised by the camera HAL as SYSTEM_ONLY
// and the serving thread is a non hwbinder thread, the client must have
// android.permission.SYSTEM_CAMERA permissions to connect.
int cPid = CameraThreadState::getCallingPid();
int cUid = CameraThreadState::getCallingUid();
bool systemClient = doesClientHaveSystemUid();
SystemCameraKind systemCameraKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(cameraId, &systemCameraKind) != OK) {
// This isn't a known camera ID, so it's not a system camera
ALOGV("%s: Unknown camera id %s, ", __FUNCTION__, cameraId.c_str());
return false;
}
// (1) Cameraserver trying to connect, accept.
if (CameraThreadState::getCallingPid() == getpid()) {
return false;
}
// (2)
if (!systemClient && systemCameraKind == SystemCameraKind::HIDDEN_SECURE_CAMERA) {
ALOGW("Rejecting access to secure hidden camera %s", cameraId.c_str());
return true;
}
// (3) Here we only check for permissions if it is a system only camera device. This is since
// getCameraCharacteristics() allows for calls to succeed (albeit after hiding some
// characteristics) even if clients don't have android.permission.CAMERA. We do not want the
// same behavior for system camera devices.
if (!systemClient && systemCameraKind == SystemCameraKind::SYSTEM_ONLY_CAMERA &&
!hasPermissionsForSystemCamera(cPid, cUid)) {
ALOGW("Rejecting access to system only camera %s, inadequete permissions",
cameraId.c_str());
return true;
}
return false;
}
Status CameraService::connectDevice(
const sp<hardware::camera2::ICameraDeviceCallbacks>& cameraCb,
const String16& cameraId,
const String16& clientPackageName,
const std::optional<String16>& clientFeatureId,
int clientUid, int oomScoreOffset, int targetSdkVersion,
bool overrideToPortrait,
/*out*/
sp<hardware::camera2::ICameraDeviceUser>* device) {
ATRACE_CALL();
Status ret = Status::ok();
String8 id = String8(cameraId);
sp<CameraDeviceClient> client = nullptr;
String16 clientPackageNameAdj = clientPackageName;
int callingPid = CameraThreadState::getCallingPid();
bool systemNativeClient = false;
if (doesClientHaveSystemUid() && (clientPackageNameAdj.size() == 0)) {
std::string systemClient =
StringPrintf("client.pid<%d>", CameraThreadState::getCallingPid());
clientPackageNameAdj = String16(systemClient.c_str());
systemNativeClient = true;
}
if (oomScoreOffset < 0) {
String8 msg =
String8::format("Cannot increase the priority of a client %s pid %d for "
"camera id %s", String8(clientPackageNameAdj).string(), callingPid,
id.string());
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
}
userid_t clientUserId = multiuser_get_user_id(clientUid);
int callingUid = CameraThreadState::getCallingUid();
if (clientUid == USE_CALLING_UID) {
clientUserId = multiuser_get_user_id(callingUid);
}
if (mCameraServiceProxyWrapper->isCameraDisabled(clientUserId)) {
String8 msg =
String8::format("Camera disabled by device policy");
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_DISABLED, msg.string());
}
// enforce system camera permissions
if (oomScoreOffset > 0 &&
!hasPermissionsForSystemCamera(callingPid, CameraThreadState::getCallingUid()) &&
!isTrustedCallingUid(CameraThreadState::getCallingUid())) {
String8 msg =
String8::format("Cannot change the priority of a client %s pid %d for "
"camera id %s without SYSTEM_CAMERA permissions",
String8(clientPackageNameAdj).string(), callingPid, id.string());
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_PERMISSION_DENIED, msg.string());
}
ret = connectHelper<hardware::camera2::ICameraDeviceCallbacks,CameraDeviceClient>(cameraCb, id,
/*api1CameraId*/-1, clientPackageNameAdj, systemNativeClient,clientFeatureId,
clientUid, USE_CALLING_PID, API_2, /*shimUpdateOnly*/ false, oomScoreOffset,
targetSdkVersion, overrideToPortrait, /*out*/client);
if(!ret.isOk()) {
logRejected(id, callingPid, String8(clientPackageNameAdj), ret.toString8());
return ret;
}
*device = client;
Mutex::Autolock lock(mServiceLock);
// Clear the previous cached logs and reposition the
// file offset to beginning of the file to log new data.
// If either truncate or lseek fails, close the previous file and create a new one.
if ((ftruncate(mMemFd, 0) == -1) || (lseek(mMemFd, 0, SEEK_SET) == -1)) {
ALOGE("%s: Error while truncating the file: %s", __FUNCTION__, sFileName);
// Close the previous memfd.
close(mMemFd);
// If failure to wipe the data, then create a new file and
// assign the new value to mMemFd.
mMemFd = memfd_create(sFileName, MFD_ALLOW_SEALING);
if (mMemFd == -1) {
ALOGE("%s: Error while creating the file: %s", __FUNCTION__, sFileName);
}
}
return ret;
}
String16 CameraService::getPackageNameFromUid(int clientUid) {
String16 packageName("");
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder = sm->getService(String16(kPermissionServiceName));
if (binder == 0) {
ALOGE("Cannot get permission service");
// Return empty package name and the further interaction
// with camera will likely fail
return packageName;
}
sp<IPermissionController> permCtrl = interface_cast<IPermissionController>(binder);
Vector<String16> packages;
permCtrl->getPackagesForUid(clientUid, packages);
if (packages.isEmpty()) {
ALOGE("No packages for calling UID %d", clientUid);
// Return empty package name and the further interaction
// with camera will likely fail
return packageName;
}
// Arbitrarily pick the first name in the list
packageName = packages[0];
return packageName;
}
template<class CALLBACK, class CLIENT>
Status CameraService::connectHelper(const sp<CALLBACK>& cameraCb, const String8& cameraId,
int api1CameraId, const String16& clientPackageNameMaybe, bool systemNativeClient,
const std::optional<String16>& clientFeatureId, int clientUid, int clientPid,
apiLevel effectiveApiLevel, bool shimUpdateOnly, int oomScoreOffset, int targetSdkVersion,
bool overrideToPortrait, /*out*/sp<CLIENT>& device) {
binder::Status ret = binder::Status::ok();
bool isNonSystemNdk = false;
String16 clientPackageName;
if (clientPackageNameMaybe.size() <= 0) {
// NDK calls don't come with package names, but we need one for various cases.
// Generally, there's a 1:1 mapping between UID and package name, but shared UIDs
// do exist. For all authentication cases, all packages under the same UID get the
// same permissions, so picking any associated package name is sufficient. For some
// other cases, this may give inaccurate names for clients in logs.
isNonSystemNdk = true;
int packageUid = (clientUid == USE_CALLING_UID) ?
CameraThreadState::getCallingUid() : clientUid;
clientPackageName = getPackageNameFromUid(packageUid);
} else {
clientPackageName = clientPackageNameMaybe;
}
String8 clientName8(clientPackageName);
int originalClientPid = 0;
int packagePid = (clientPid == USE_CALLING_PID) ?
CameraThreadState::getCallingPid() : clientPid;
ALOGI("CameraService::connect call (PID %d \"%s\", camera ID %s) and "
"Camera API version %d", packagePid, clientName8.string(), cameraId.string(),
static_cast<int>(effectiveApiLevel));
nsecs_t openTimeNs = systemTime();
sp<CLIENT> client = nullptr;
int facing = -1;
int orientation = 0;
{
// Acquire mServiceLock and prevent other clients from connecting
std::unique_ptr<AutoConditionLock> lock =
AutoConditionLock::waitAndAcquire(mServiceLockWrapper, DEFAULT_CONNECT_TIMEOUT_NS);
if (lock == nullptr) {
ALOGE("CameraService::connect (PID %d) rejected (too many other clients connecting)."
, clientPid);
return STATUS_ERROR_FMT(ERROR_MAX_CAMERAS_IN_USE,
"Cannot open camera %s for \"%s\" (PID %d): Too many other clients connecting",
cameraId.string(), clientName8.string(), clientPid);
}
// Enforce client permissions and do basic validity checks
if(!(ret = validateConnectLocked(cameraId, clientName8,
/*inout*/clientUid, /*inout*/clientPid, /*out*/originalClientPid)).isOk()) {
return ret;
}
// Check the shim parameters after acquiring lock, if they have already been updated and
// we were doing a shim update, return immediately
if (shimUpdateOnly) {
auto cameraState = getCameraState(cameraId);
if (cameraState != nullptr) {
if (!cameraState->getShimParams().isEmpty()) return ret;
}
}
status_t err;
sp<BasicClient> clientTmp = nullptr;
std::shared_ptr<resource_policy::ClientDescriptor<String8, sp<BasicClient>>> partial;
if ((err = handleEvictionsLocked(cameraId, originalClientPid, effectiveApiLevel,
IInterface::asBinder(cameraCb), clientName8, oomScoreOffset, systemNativeClient,
/*out*/&clientTmp, /*out*/&partial)) != NO_ERROR) {
switch (err) {
case -ENODEV:
return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
"No camera device with ID \"%s\" currently available",
cameraId.string());
case -EBUSY:
return STATUS_ERROR_FMT(ERROR_CAMERA_IN_USE,
"Higher-priority client using camera, ID \"%s\" currently unavailable",
cameraId.string());
case -EUSERS:
return STATUS_ERROR_FMT(ERROR_MAX_CAMERAS_IN_USE,
"Too many cameras already open, cannot open camera \"%s\"",
cameraId.string());
default:
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Unexpected error %s (%d) opening camera \"%s\"",
strerror(-err), err, cameraId.string());
}
}
if (clientTmp.get() != nullptr) {
// Handle special case for API1 MediaRecorder where the existing client is returned
device = static_cast<CLIENT*>(clientTmp.get());
return ret;
}
// give flashlight a chance to close devices if necessary.
mFlashlight->prepareDeviceOpen(cameraId);
int portraitRotation;
auto deviceVersionAndTransport =
getDeviceVersion(cameraId, overrideToPortrait, /*out*/&portraitRotation,
/*out*/&facing, /*out*/&orientation);
if (facing == -1) {
ALOGE("%s: Unable to get camera device \"%s\" facing", __FUNCTION__, cameraId.string());
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Unable to get camera device \"%s\" facing", cameraId.string());
}
sp<BasicClient> tmp = nullptr;
bool overrideForPerfClass = SessionConfigurationUtils::targetPerfClassPrimaryCamera(
mPerfClassPrimaryCameraIds, cameraId.string(), targetSdkVersion);
if(!(ret = makeClient(this, cameraCb, clientPackageName, systemNativeClient,
clientFeatureId, cameraId, api1CameraId, facing, orientation,
clientPid, clientUid, getpid(),
deviceVersionAndTransport, effectiveApiLevel, overrideForPerfClass,
overrideToPortrait, /*out*/&tmp)).isOk()) {
return ret;
}
client = static_cast<CLIENT*>(tmp.get());
LOG_ALWAYS_FATAL_IF(client.get() == nullptr, "%s: CameraService in invalid state",
__FUNCTION__);
String8 monitorTags = isClientWatched(client.get()) ? mMonitorTags : String8("");
err = client->initialize(mCameraProviderManager, monitorTags);
if (err != OK) {
ALOGE("%s: Could not initialize client from HAL.", __FUNCTION__);
// Errors could be from the HAL module open call or from AppOpsManager
switch(err) {
case BAD_VALUE:
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Illegal argument to HAL module for camera \"%s\"", cameraId.string());
case -EBUSY:
return STATUS_ERROR_FMT(ERROR_CAMERA_IN_USE,
"Camera \"%s\" is already open", cameraId.string());
case -EUSERS:
return STATUS_ERROR_FMT(ERROR_MAX_CAMERAS_IN_USE,
"Too many cameras already open, cannot open camera \"%s\"",
cameraId.string());
case PERMISSION_DENIED:
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"No permission to open camera \"%s\"", cameraId.string());
case -EACCES:
return STATUS_ERROR_FMT(ERROR_DISABLED,
"Camera \"%s\" disabled by policy", cameraId.string());
case -ENODEV:
default:
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Failed to initialize camera \"%s\": %s (%d)", cameraId.string(),
strerror(-err), err);
}
}
// Update shim paremeters for legacy clients
if (effectiveApiLevel == API_1) {
// Assume we have always received a Client subclass for API1
sp<Client> shimClient = reinterpret_cast<Client*>(client.get());
String8 rawParams = shimClient->getParameters();
CameraParameters params(rawParams);
auto cameraState = getCameraState(cameraId);
if (cameraState != nullptr) {
cameraState->setShimParams(params);
} else {
ALOGE("%s: Cannot update shim parameters for camera %s, no such device exists.",
__FUNCTION__, cameraId.string());
}
}
// Enable/disable camera service watchdog
client->setCameraServiceWatchdog(mCameraServiceWatchdogEnabled);
// Set rotate-and-crop override behavior
if (mOverrideRotateAndCropMode != ANDROID_SCALER_ROTATE_AND_CROP_AUTO) {
client->setRotateAndCropOverride(mOverrideRotateAndCropMode);
} else if (overrideToPortrait && portraitRotation != 0) {
uint8_t rotateAndCropMode = ANDROID_SCALER_ROTATE_AND_CROP_AUTO;
switch (portraitRotation) {
case 90:
rotateAndCropMode = ANDROID_SCALER_ROTATE_AND_CROP_90;
break;
case 180:
rotateAndCropMode = ANDROID_SCALER_ROTATE_AND_CROP_180;
break;
case 270:
rotateAndCropMode = ANDROID_SCALER_ROTATE_AND_CROP_270;
break;
default:
ALOGE("Unexpected portrait rotation: %d", portraitRotation);
break;
}
client->setRotateAndCropOverride(rotateAndCropMode);
} else {
client->setRotateAndCropOverride(
mCameraServiceProxyWrapper->getRotateAndCropOverride(
clientPackageName, facing, multiuser_get_user_id(clientUid)));
}
// Set autoframing override behaviour
if (mOverrideAutoframingMode != ANDROID_CONTROL_AUTOFRAMING_AUTO) {
client->setAutoframingOverride(mOverrideAutoframingMode);
} else {
client->setAutoframingOverride(
mCameraServiceProxyWrapper->getAutoframingOverride(
clientPackageName));
}
// Set camera muting behavior
bool isCameraPrivacyEnabled =
mSensorPrivacyPolicy->isCameraPrivacyEnabled();
if (client->supportsCameraMute()) {
client->setCameraMute(
mOverrideCameraMuteMode || isCameraPrivacyEnabled);
} else if (isCameraPrivacyEnabled) {
// no camera mute supported, but privacy is on! => disconnect
ALOGI("Camera mute not supported for package: %s, camera id: %s",
String8(client->getPackageName()).string(), cameraId.string());
// Do not hold mServiceLock while disconnecting clients, but
// retain the condition blocking other clients from connecting
// in mServiceLockWrapper if held.
mServiceLock.unlock();
// Clear caller identity temporarily so client disconnect PID
// checks work correctly
int64_t token = CameraThreadState::clearCallingIdentity();
// Note AppOp to trigger the "Unblock" dialog
client->noteAppOp();
client->disconnect();
CameraThreadState::restoreCallingIdentity(token);
// Reacquire mServiceLock
mServiceLock.lock();
return STATUS_ERROR_FMT(ERROR_DISABLED,
"Camera \"%s\" disabled due to camera mute", cameraId.string());
}
if (shimUpdateOnly) {
// If only updating legacy shim parameters, immediately disconnect client
mServiceLock.unlock();
client->disconnect();
mServiceLock.lock();
} else {
// Otherwise, add client to active clients list
finishConnectLocked(client, partial, oomScoreOffset, systemNativeClient);
}
client->setImageDumpMask(mImageDumpMask);
client->setStreamUseCaseOverrides(mStreamUseCaseOverrides);
} // lock is destroyed, allow further connect calls
// Important: release the mutex here so the client can call back into the service from its
// destructor (can be at the end of the call)
device = client;
int32_t openLatencyMs = ns2ms(systemTime() - openTimeNs);
mCameraServiceProxyWrapper->logOpen(cameraId, facing, clientPackageName,
effectiveApiLevel, isNonSystemNdk, openLatencyMs);
{
Mutex::Autolock lock(mInjectionParametersLock);
if (cameraId == mInjectionInternalCamId && mInjectionInitPending) {
mInjectionInitPending = false;
status_t res = NO_ERROR;
auto clientDescriptor = mActiveClientManager.get(mInjectionInternalCamId);
if (clientDescriptor != nullptr) {
sp<BasicClient> clientSp = clientDescriptor->getValue();
res = checkIfInjectionCameraIsPresent(mInjectionExternalCamId, clientSp);
if(res != OK) {
return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
"No camera device with ID \"%s\" currently available",
mInjectionExternalCamId.string());
}
res = clientSp->injectCamera(mInjectionExternalCamId, mCameraProviderManager);
if (res != OK) {
mInjectionStatusListener->notifyInjectionError(mInjectionExternalCamId, res);
}
} else {
ALOGE("%s: Internal camera ID = %s 's client does not exist!",
__FUNCTION__, mInjectionInternalCamId.string());
res = NO_INIT;
mInjectionStatusListener->notifyInjectionError(mInjectionExternalCamId, res);
}
}
}
return ret;
}
status_t CameraService::addOfflineClient(String8 cameraId, sp<BasicClient> offlineClient) {
if (offlineClient.get() == nullptr) {
return BAD_VALUE;
}
{
// Acquire mServiceLock and prevent other clients from connecting
std::unique_ptr<AutoConditionLock> lock =
AutoConditionLock::waitAndAcquire(mServiceLockWrapper, DEFAULT_CONNECT_TIMEOUT_NS);
if (lock == nullptr) {
ALOGE("%s: (PID %d) rejected (too many other clients connecting)."
, __FUNCTION__, offlineClient->getClientPid());
return TIMED_OUT;
}
auto onlineClientDesc = mActiveClientManager.get(cameraId);
if (onlineClientDesc.get() == nullptr) {
ALOGE("%s: No active online client using camera id: %s", __FUNCTION__,
cameraId.c_str());
return BAD_VALUE;
}
// Offline clients do not evict or conflict with other online devices. Resource sharing
// conflicts are handled by the camera provider which will either succeed or fail before
// reaching this method.
const auto& onlinePriority = onlineClientDesc->getPriority();
auto offlineClientDesc = CameraClientManager::makeClientDescriptor(
kOfflineDevice + onlineClientDesc->getKey(), offlineClient, /*cost*/ 0,
/*conflictingKeys*/ std::set<String8>(), onlinePriority.getScore(),
onlineClientDesc->getOwnerId(), onlinePriority.getState(),
// native clients don't have offline processing support.
/*ommScoreOffset*/ 0, /*systemNativeClient*/false);
if (offlineClientDesc == nullptr) {
ALOGE("%s: Offline client descriptor was NULL", __FUNCTION__);
return BAD_VALUE;
}
// Allow only one offline device per camera
auto incompatibleClients = mActiveClientManager.getIncompatibleClients(offlineClientDesc);
if (!incompatibleClients.empty()) {
ALOGE("%s: Incompatible offline clients present!", __FUNCTION__);
return BAD_VALUE;
}
String8 monitorTags = isClientWatched(offlineClient.get()) ? mMonitorTags : String8("");
auto err = offlineClient->initialize(mCameraProviderManager, monitorTags);
if (err != OK) {
ALOGE("%s: Could not initialize offline client.", __FUNCTION__);
return err;
}
auto evicted = mActiveClientManager.addAndEvict(offlineClientDesc);
if (evicted.size() > 0) {
for (auto& i : evicted) {
ALOGE("%s: Invalid state: Offline client for camera %s was not removed ",
__FUNCTION__, i->getKey().string());
}
LOG_ALWAYS_FATAL("%s: Invalid state for CameraService, offline clients not evicted "
"properly", __FUNCTION__);
return BAD_VALUE;
}
logConnectedOffline(offlineClientDesc->getKey(),
static_cast<int>(offlineClientDesc->getOwnerId()),
String8(offlineClient->getPackageName()));
sp<IBinder> remoteCallback = offlineClient->getRemote();
if (remoteCallback != nullptr) {
remoteCallback->linkToDeath(this);
}
} // lock is destroyed, allow further connect calls
return OK;
}
Status CameraService::turnOnTorchWithStrengthLevel(const String16& cameraId, int32_t torchStrength,
const sp<IBinder>& clientBinder) {
Mutex::Autolock lock(mServiceLock);
ATRACE_CALL();
if (clientBinder == nullptr) {
ALOGE("%s: torch client binder is NULL", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT,
"Torch client binder in null.");
}
String8 id = String8(cameraId.string());
int uid = CameraThreadState::getCallingUid();
if (shouldRejectSystemCameraConnection(id)) {
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, "Unable to change the strength level"
"for system only device %s: ", id.string());
}
// verify id is valid
auto state = getCameraState(id);
if (state == nullptr) {
ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Camera ID \"%s\" is a not valid camera ID", id.string());
}
StatusInternal cameraStatus = state->getStatus();
if (cameraStatus != StatusInternal::NOT_AVAILABLE &&
cameraStatus != StatusInternal::PRESENT) {
ALOGE("%s: camera id is invalid %s, status %d", __FUNCTION__, id.string(),
(int)cameraStatus);
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Camera ID \"%s\" is a not valid camera ID", id.string());
}
{
Mutex::Autolock al(mTorchStatusMutex);
TorchModeStatus status;
status_t err = getTorchStatusLocked(id, &status);
if (err != OK) {
if (err == NAME_NOT_FOUND) {
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Camera \"%s\" does not have a flash unit", id.string());
}
ALOGE("%s: getting current torch status failed for camera %s",
__FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Error changing torch strength level for camera \"%s\": %s (%d)",
id.string(), strerror(-err), err);
}
if (status == TorchModeStatus::NOT_AVAILABLE) {
if (cameraStatus == StatusInternal::NOT_AVAILABLE) {
ALOGE("%s: torch mode of camera %s is not available because "
"camera is in use.", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_CAMERA_IN_USE,
"Torch for camera \"%s\" is not available due to an existing camera user",
id.string());
} else {
ALOGE("%s: torch mode of camera %s is not available due to "
"insufficient resources", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_MAX_CAMERAS_IN_USE,
"Torch for camera \"%s\" is not available due to insufficient resources",
id.string());
}
}
}
{
Mutex::Autolock al(mTorchUidMapMutex);
updateTorchUidMapLocked(cameraId, uid);
}
// Check if the current torch strength level is same as the new one.
bool shouldSkipTorchStrengthUpdates = mCameraProviderManager->shouldSkipTorchStrengthUpdate(
id.string(), torchStrength);
status_t err = mFlashlight->turnOnTorchWithStrengthLevel(id, torchStrength);
if (err != OK) {
int32_t errorCode;
String8 msg;
switch (err) {
case -ENOSYS:
msg = String8::format("Camera \"%s\" has no flashlight.",
id.string());
errorCode = ERROR_ILLEGAL_ARGUMENT;
break;
case -EBUSY:
msg = String8::format("Camera \"%s\" is in use",
id.string());
errorCode = ERROR_CAMERA_IN_USE;
break;
case -EINVAL:
msg = String8::format("Torch strength level %d is not within the "
"valid range.", torchStrength);
errorCode = ERROR_ILLEGAL_ARGUMENT;
break;
default:
msg = String8::format("Changing torch strength level failed.");
errorCode = ERROR_INVALID_OPERATION;
}
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(errorCode, msg.string());
}
{
// update the link to client's death
// Store the last client that turns on each camera's torch mode.
Mutex::Autolock al(mTorchClientMapMutex);
ssize_t index = mTorchClientMap.indexOfKey(id);
if (index == NAME_NOT_FOUND) {
mTorchClientMap.add(id, clientBinder);
} else {
mTorchClientMap.valueAt(index)->unlinkToDeath(this);
mTorchClientMap.replaceValueAt(index, clientBinder);
}
clientBinder->linkToDeath(this);
}
int clientPid = CameraThreadState::getCallingPid();
const char *id_cstr = id.c_str();
ALOGI("%s: Torch strength for camera id %s changed to %d for client PID %d",
__FUNCTION__, id_cstr, torchStrength, clientPid);
if (!shouldSkipTorchStrengthUpdates) {
broadcastTorchStrengthLevel(id, torchStrength);
}
return Status::ok();
}
Status CameraService::setTorchMode(const String16& cameraId, bool enabled,
const sp<IBinder>& clientBinder) {
Mutex::Autolock lock(mServiceLock);
ATRACE_CALL();
if (enabled && clientBinder == nullptr) {
ALOGE("%s: torch client binder is NULL", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT,
"Torch client Binder is null");
}
String8 id = String8(cameraId.string());
int uid = CameraThreadState::getCallingUid();
if (shouldRejectSystemCameraConnection(id)) {
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT, "Unable to set torch mode"
" for system only device %s: ", id.string());
}
// verify id is valid.
auto state = getCameraState(id);
if (state == nullptr) {
ALOGE("%s: camera id is invalid %s", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Camera ID \"%s\" is a not valid camera ID", id.string());
}
StatusInternal cameraStatus = state->getStatus();
if (cameraStatus != StatusInternal::PRESENT &&
cameraStatus != StatusInternal::NOT_AVAILABLE) {
ALOGE("%s: camera id is invalid %s, status %d", __FUNCTION__, id.string(), (int)cameraStatus);
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Camera ID \"%s\" is a not valid camera ID", id.string());
}
{
Mutex::Autolock al(mTorchStatusMutex);
TorchModeStatus status;
status_t err = getTorchStatusLocked(id, &status);
if (err != OK) {
if (err == NAME_NOT_FOUND) {
return STATUS_ERROR_FMT(ERROR_ILLEGAL_ARGUMENT,
"Camera \"%s\" does not have a flash unit", id.string());
}
ALOGE("%s: getting current torch status failed for camera %s",
__FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION,
"Error updating torch status for camera \"%s\": %s (%d)", id.string(),
strerror(-err), err);
}
if (status == TorchModeStatus::NOT_AVAILABLE) {
if (cameraStatus == StatusInternal::NOT_AVAILABLE) {
ALOGE("%s: torch mode of camera %s is not available because "
"camera is in use", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_CAMERA_IN_USE,
"Torch for camera \"%s\" is not available due to an existing camera user",
id.string());
} else {
ALOGE("%s: torch mode of camera %s is not available due to "
"insufficient resources", __FUNCTION__, id.string());
return STATUS_ERROR_FMT(ERROR_MAX_CAMERAS_IN_USE,
"Torch for camera \"%s\" is not available due to insufficient resources",
id.string());
}
}
}
{
// Update UID map - this is used in the torch status changed callbacks, so must be done
// before setTorchMode
Mutex::Autolock al(mTorchUidMapMutex);
updateTorchUidMapLocked(cameraId, uid);
}
status_t err = mFlashlight->setTorchMode(id, enabled);
if (err != OK) {
int32_t errorCode;
String8 msg;
switch (err) {
case -ENOSYS:
msg = String8::format("Camera \"%s\" has no flashlight",
id.string());
errorCode = ERROR_ILLEGAL_ARGUMENT;
break;
case -EBUSY:
msg = String8::format("Camera \"%s\" is in use",
id.string());
errorCode = ERROR_CAMERA_IN_USE;
break;
default:
msg = String8::format(
"Setting torch mode of camera \"%s\" to %d failed: %s (%d)",
id.string(), enabled, strerror(-err), err);
errorCode = ERROR_INVALID_OPERATION;
}
ALOGE("%s: %s", __FUNCTION__, msg.string());
logServiceError(msg,errorCode);
return STATUS_ERROR(errorCode, msg.string());
}
{
// update the link to client's death
Mutex::Autolock al(mTorchClientMapMutex);
ssize_t index = mTorchClientMap.indexOfKey(id);
if (enabled) {
if (index == NAME_NOT_FOUND) {
mTorchClientMap.add(id, clientBinder);
} else {
mTorchClientMap.valueAt(index)->unlinkToDeath(this);
mTorchClientMap.replaceValueAt(index, clientBinder);
}
clientBinder->linkToDeath(this);
} else if (index != NAME_NOT_FOUND) {
mTorchClientMap.valueAt(index)->unlinkToDeath(this);
}
}
int clientPid = CameraThreadState::getCallingPid();
const char *id_cstr = id.c_str();
const char *torchState = enabled ? "on" : "off";
ALOGI("Torch for camera id %s turned %s for client PID %d", id_cstr, torchState, clientPid);
logTorchEvent(id_cstr, torchState , clientPid);
return Status::ok();
}
void CameraService::updateTorchUidMapLocked(const String16& cameraId, int uid) {
String8 id = String8(cameraId.string());
if (mTorchUidMap.find(id) == mTorchUidMap.end()) {
mTorchUidMap[id].first = uid;
mTorchUidMap[id].second = uid;
} else {
// Set the pending UID
mTorchUidMap[id].first = uid;
}
}
Status CameraService::notifySystemEvent(int32_t eventId,
const std::vector<int32_t>& args) {
const int pid = CameraThreadState::getCallingPid();
const int selfPid = getpid();
// Permission checks
if (pid != selfPid) {
// Ensure we're being called by system_server, or similar process with
// permissions to notify the camera service about system events
if (!checkCallingPermission(sCameraSendSystemEventsPermission)) {
const int uid = CameraThreadState::getCallingUid();
ALOGE("Permission Denial: cannot send updates to camera service about system"
" events from pid=%d, uid=%d", pid, uid);
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"No permission to send updates to camera service about system events"
" from pid=%d, uid=%d", pid, uid);
}
}
ATRACE_CALL();
switch(eventId) {
case ICameraService::EVENT_USER_SWITCHED: {
// Try to register for UID and sensor privacy policy updates, in case we're recovering
// from a system server crash
mUidPolicy->registerSelf();
mSensorPrivacyPolicy->registerSelf();
doUserSwitch(/*newUserIds*/ args);
break;
}
case ICameraService::EVENT_USB_DEVICE_ATTACHED:
case ICameraService::EVENT_USB_DEVICE_DETACHED: {
// Notify CameraProviderManager for lazy HALs
mCameraProviderManager->notifyUsbDeviceEvent(eventId,
std::to_string(args[0]));
break;
}
case ICameraService::EVENT_NONE:
default: {
ALOGW("%s: Received invalid system event from system_server: %d", __FUNCTION__,
eventId);
break;
}
}
return Status::ok();
}
void CameraService::notifyMonitoredUids() {
Mutex::Autolock lock(mStatusListenerLock);
for (const auto& it : mListenerList) {
auto ret = it->getListener()->onCameraAccessPrioritiesChanged();
it->handleBinderStatus(ret, "%s: Failed to trigger permission callback for %d:%d: %d",
__FUNCTION__, it->getListenerUid(), it->getListenerPid(), ret.exceptionCode());
}
}
Status CameraService::notifyDeviceStateChange(int64_t newState) {
const int pid = CameraThreadState::getCallingPid();
const int selfPid = getpid();
// Permission checks
if (pid != selfPid) {
// Ensure we're being called by system_server, or similar process with
// permissions to notify the camera service about system events
if (!checkCallingPermission(sCameraSendSystemEventsPermission)) {
const int uid = CameraThreadState::getCallingUid();
ALOGE("Permission Denial: cannot send updates to camera service about device"
" state changes from pid=%d, uid=%d", pid, uid);
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"No permission to send updates to camera service about device state"
" changes from pid=%d, uid=%d", pid, uid);
}
}
ATRACE_CALL();
{
Mutex::Autolock lock(mServiceLock);
mDeviceState = newState;
}
mCameraProviderManager->notifyDeviceStateChange(newState);
return Status::ok();
}
Status CameraService::notifyDisplayConfigurationChange() {
ATRACE_CALL();
const int callingPid = CameraThreadState::getCallingPid();
const int selfPid = getpid();
// Permission checks
if (callingPid != selfPid) {
// Ensure we're being called by system_server, or similar process with
// permissions to notify the camera service about system events
if (!checkCallingPermission(sCameraSendSystemEventsPermission)) {
const int uid = CameraThreadState::getCallingUid();
ALOGE("Permission Denial: cannot send updates to camera service about orientation"
" changes from pid=%d, uid=%d", callingPid, uid);
return STATUS_ERROR_FMT(ERROR_PERMISSION_DENIED,
"No permission to send updates to camera service about orientation"
" changes from pid=%d, uid=%d", callingPid, uid);
}
}
Mutex::Autolock lock(mServiceLock);
// Don't do anything if rotate-and-crop override via cmd is active
if (mOverrideRotateAndCropMode != ANDROID_SCALER_ROTATE_AND_CROP_AUTO) return Status::ok();
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr && !basicClient->getOverrideToPortrait()) {
basicClient->setRotateAndCropOverride(
mCameraServiceProxyWrapper->getRotateAndCropOverride(
basicClient->getPackageName(),
basicClient->getCameraFacing(),
multiuser_get_user_id(basicClient->getClientUid())));
}
}
}
return Status::ok();
}
Status CameraService::getConcurrentCameraIds(
std::vector<ConcurrentCameraIdCombination>* concurrentCameraIds) {
ATRACE_CALL();
if (!concurrentCameraIds) {
ALOGE("%s: concurrentCameraIds is NULL", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "concurrentCameraIds is NULL");
}
if (!mInitialized) {
ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
logServiceError(String8::format("Camera subsystem is not available"),ERROR_DISCONNECTED);
return STATUS_ERROR(ERROR_DISCONNECTED,
"Camera subsystem is not available");
}
// First call into the provider and get the set of concurrent camera
// combinations
std::vector<std::unordered_set<std::string>> concurrentCameraCombinations =
mCameraProviderManager->getConcurrentCameraIds();
for (auto &combination : concurrentCameraCombinations) {
std::vector<std::string> validCombination;
for (auto &cameraId : combination) {
// if the camera state is not present, skip
String8 cameraIdStr(cameraId.c_str());
auto state = getCameraState(cameraIdStr);
if (state == nullptr) {
ALOGW("%s: camera id %s does not exist", __FUNCTION__, cameraId.c_str());
continue;
}
StatusInternal status = state->getStatus();
if (status == StatusInternal::NOT_PRESENT || status == StatusInternal::ENUMERATING) {
continue;
}
if (shouldRejectSystemCameraConnection(cameraIdStr)) {
continue;
}
validCombination.push_back(cameraId);
}
if (validCombination.size() != 0) {
concurrentCameraIds->push_back(std::move(validCombination));
}
}
return Status::ok();
}
Status CameraService::isConcurrentSessionConfigurationSupported(
const std::vector<CameraIdAndSessionConfiguration>& cameraIdsAndSessionConfigurations,
int targetSdkVersion, /*out*/bool* isSupported) {
if (!isSupported) {
ALOGE("%s: isSupported is NULL", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "isSupported is NULL");
}
if (!mInitialized) {
ALOGE("%s: Camera HAL couldn't be initialized", __FUNCTION__);
return STATUS_ERROR(ERROR_DISCONNECTED,
"Camera subsystem is not available");
}
// Check for camera permissions
int callingPid = CameraThreadState::getCallingPid();
int callingUid = CameraThreadState::getCallingUid();
permission::PermissionChecker permissionChecker;
AttributionSourceState attributionSource{};
attributionSource.pid = callingPid;
attributionSource.uid = callingUid;
bool checkPermissionForCamera = permissionChecker.checkPermissionForPreflight(
sCameraPermission, attributionSource, String16(), AppOpsManager::OP_NONE)
!= permission::PermissionChecker::PERMISSION_HARD_DENIED;
if ((callingPid != getpid()) && !checkPermissionForCamera) {
ALOGE("%s: pid %d doesn't have camera permissions", __FUNCTION__, callingPid);
return STATUS_ERROR(ERROR_PERMISSION_DENIED,
"android.permission.CAMERA needed to call"
"isConcurrentSessionConfigurationSupported");
}
status_t res =
mCameraProviderManager->isConcurrentSessionConfigurationSupported(
cameraIdsAndSessionConfigurations, mPerfClassPrimaryCameraIds,
targetSdkVersion, isSupported);
if (res != OK) {
logServiceError(String8::format("Unable to query session configuration support"),
ERROR_INVALID_OPERATION);
return STATUS_ERROR_FMT(ERROR_INVALID_OPERATION, "Unable to query session configuration "
"support %s (%d)", strerror(-res), res);
}
return Status::ok();
}
Status CameraService::addListener(const sp<ICameraServiceListener>& listener,
/*out*/
std::vector<hardware::CameraStatus> *cameraStatuses) {
return addListenerHelper(listener, cameraStatuses);
}
binder::Status CameraService::addListenerTest(const sp<hardware::ICameraServiceListener>& listener,
std::vector<hardware::CameraStatus>* cameraStatuses) {
return addListenerHelper(listener, cameraStatuses, false, true);
}
Status CameraService::addListenerHelper(const sp<ICameraServiceListener>& listener,
/*out*/
std::vector<hardware::CameraStatus> *cameraStatuses,
bool isVendorListener, bool isProcessLocalTest) {
ATRACE_CALL();
ALOGV("%s: Add listener %p", __FUNCTION__, listener.get());
if (listener == nullptr) {
ALOGE("%s: Listener must not be null", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Null listener given to addListener");
}
auto clientUid = CameraThreadState::getCallingUid();
auto clientPid = CameraThreadState::getCallingPid();
permission::PermissionChecker permissionChecker;
AttributionSourceState attributionSource{};
attributionSource.uid = clientUid;
attributionSource.pid = clientPid;
bool openCloseCallbackAllowed = permissionChecker.checkPermissionForPreflight(
sCameraOpenCloseListenerPermission, attributionSource, String16(),
AppOpsManager::OP_NONE) != permission::PermissionChecker::PERMISSION_HARD_DENIED;
Mutex::Autolock lock(mServiceLock);
{
Mutex::Autolock lock(mStatusListenerLock);
for (const auto &it : mListenerList) {
if (IInterface::asBinder(it->getListener()) == IInterface::asBinder(listener)) {
ALOGW("%s: Tried to add listener %p which was already subscribed",
__FUNCTION__, listener.get());
return STATUS_ERROR(ERROR_ALREADY_EXISTS, "Listener already registered");
}
}
sp<ServiceListener> serviceListener =
new ServiceListener(this, listener, clientUid, clientPid, isVendorListener,
openCloseCallbackAllowed);
auto ret = serviceListener->initialize(isProcessLocalTest);
if (ret != NO_ERROR) {
String8 msg = String8::format("Failed to initialize service listener: %s (%d)",
strerror(-ret), ret);
logServiceError(msg,ERROR_ILLEGAL_ARGUMENT);
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
}
// The listener still needs to be added to the list of listeners, regardless of what
// permissions the listener process has / whether it is a vendor listener. Since it might be
// eligible to listen to other camera ids.
mListenerList.emplace_back(serviceListener);
mUidPolicy->registerMonitorUid(clientUid);
}
/* Collect current devices and status */
{
Mutex::Autolock lock(mCameraStatesLock);
for (auto& i : mCameraStates) {
cameraStatuses->emplace_back(i.first,
mapToInterface(i.second->getStatus()), i.second->getUnavailablePhysicalIds(),
openCloseCallbackAllowed ? i.second->getClientPackage() : String8::empty());
}
}
// Remove the camera statuses that should be hidden from the client, we do
// this after collecting the states in order to avoid holding
// mCameraStatesLock and mInterfaceLock (held in getSystemCameraKind()) at
// the same time.
cameraStatuses->erase(std::remove_if(cameraStatuses->begin(), cameraStatuses->end(),
[this, &isVendorListener, &clientPid, &clientUid](const hardware::CameraStatus& s) {
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(s.cameraId, &deviceKind) != OK) {
ALOGE("%s: Invalid camera id %s, skipping status update",
__FUNCTION__, s.cameraId.c_str());
return true;
}
return shouldSkipStatusUpdates(deviceKind, isVendorListener, clientPid,
clientUid);}), cameraStatuses->end());
//cameraStatuses will have non-eligible camera ids removed.
std::set<String16> idsChosenForCallback;
for (const auto &s : *cameraStatuses) {
idsChosenForCallback.insert(String16(s.cameraId));
}
/*
* Immediately signal current torch status to this listener only
* This may be a subset of all the devices, so don't include it in the response directly
*/
{
Mutex::Autolock al(mTorchStatusMutex);
for (size_t i = 0; i < mTorchStatusMap.size(); i++ ) {
String16 id = String16(mTorchStatusMap.keyAt(i).string());
// The camera id is visible to the client. Fine to send torch
// callback.
if (idsChosenForCallback.find(id) != idsChosenForCallback.end()) {
listener->onTorchStatusChanged(mapToInterface(mTorchStatusMap.valueAt(i)), id);
}
}
}
return Status::ok();
}
Status CameraService::removeListener(const sp<ICameraServiceListener>& listener) {
ATRACE_CALL();
ALOGV("%s: Remove listener %p", __FUNCTION__, listener.get());
if (listener == 0) {
ALOGE("%s: Listener must not be null", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Null listener given to removeListener");
}
Mutex::Autolock lock(mServiceLock);
{
Mutex::Autolock lock(mStatusListenerLock);
for (auto it = mListenerList.begin(); it != mListenerList.end(); it++) {
if (IInterface::asBinder((*it)->getListener()) == IInterface::asBinder(listener)) {
mUidPolicy->unregisterMonitorUid((*it)->getListenerUid());
IInterface::asBinder(listener)->unlinkToDeath(*it);
mListenerList.erase(it);
return Status::ok();
}
}
}
ALOGW("%s: Tried to remove a listener %p which was not subscribed",
__FUNCTION__, listener.get());
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Unregistered listener given to removeListener");
}
Status CameraService::getLegacyParameters(int cameraId, /*out*/String16* parameters) {
ATRACE_CALL();
ALOGV("%s: for camera ID = %d", __FUNCTION__, cameraId);
if (parameters == NULL) {
ALOGE("%s: parameters must not be null", __FUNCTION__);
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, "Parameters must not be null");
}
Status ret = Status::ok();
CameraParameters shimParams;
if (!(ret = getLegacyParametersLazy(cameraId, /*out*/&shimParams)).isOk()) {
// Error logged by caller
return ret;
}
String8 shimParamsString8 = shimParams.flatten();
String16 shimParamsString16 = String16(shimParamsString8);
*parameters = shimParamsString16;
return ret;
}
Status CameraService::supportsCameraApi(const String16& cameraId, int apiVersion,
/*out*/ bool *isSupported) {
ATRACE_CALL();
const String8 id = String8(cameraId);
ALOGV("%s: for camera ID = %s", __FUNCTION__, id.string());
switch (apiVersion) {
case API_VERSION_1:
case API_VERSION_2:
break;
default:
String8 msg = String8::format("Unknown API version %d", apiVersion);
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
}
int portraitRotation;
auto deviceVersionAndTransport = getDeviceVersion(id, false, &portraitRotation);
if (deviceVersionAndTransport.first == -1) {
String8 msg = String8::format("Unknown camera ID %s", id.string());
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_ILLEGAL_ARGUMENT, msg.string());
}
if (deviceVersionAndTransport.second == IPCTransport::HIDL) {
int deviceVersion = deviceVersionAndTransport.first;
switch (deviceVersion) {
case CAMERA_DEVICE_API_VERSION_1_0:
case CAMERA_DEVICE_API_VERSION_3_0:
case CAMERA_DEVICE_API_VERSION_3_1:
if (apiVersion == API_VERSION_2) {
ALOGV("%s: Camera id %s uses HAL version %d <3.2, doesn't support api2 without "
"shim", __FUNCTION__, id.string(), deviceVersion);
*isSupported = false;
} else { // if (apiVersion == API_VERSION_1) {
ALOGV("%s: Camera id %s uses older HAL before 3.2, but api1 is always "
"supported", __FUNCTION__, id.string());
*isSupported = true;
}
break;
case CAMERA_DEVICE_API_VERSION_3_2:
case CAMERA_DEVICE_API_VERSION_3_3:
case CAMERA_DEVICE_API_VERSION_3_4:
case CAMERA_DEVICE_API_VERSION_3_5:
case CAMERA_DEVICE_API_VERSION_3_6:
case CAMERA_DEVICE_API_VERSION_3_7:
ALOGV("%s: Camera id %s uses HAL3.2 or newer, supports api1/api2 directly",
__FUNCTION__, id.string());
*isSupported = true;
break;
default: {
String8 msg = String8::format("Unknown device version %x for device %s",
deviceVersion, id.string());
ALOGE("%s: %s", __FUNCTION__, msg.string());
return STATUS_ERROR(ERROR_INVALID_OPERATION, msg.string());
}
}
} else {
*isSupported = true;
}
return Status::ok();
}
Status CameraService::isHiddenPhysicalCamera(const String16& cameraId,
/*out*/ bool *isSupported) {
ATRACE_CALL();
const String8 id = String8(cameraId);
ALOGV("%s: for camera ID = %s", __FUNCTION__, id.string());
*isSupported = mCameraProviderManager->isHiddenPhysicalCamera(id.string());
return Status::ok();
}
Status CameraService::injectCamera(
const String16& packageName, const String16& internalCamId,
const String16& externalCamId,
const sp<ICameraInjectionCallback>& callback,
/*out*/
sp<ICameraInjectionSession>* cameraInjectionSession) {
ATRACE_CALL();
if (!checkCallingPermission(sCameraInjectExternalCameraPermission)) {
const int pid = CameraThreadState::getCallingPid();
const int uid = CameraThreadState::getCallingUid();
ALOGE("Permission Denial: can't inject camera pid=%d, uid=%d", pid, uid);
return STATUS_ERROR(ERROR_PERMISSION_DENIED,
"Permission Denial: no permission to inject camera");
}
ALOGV(
"%s: Package name = %s, Internal camera ID = %s, External camera ID = "
"%s",
__FUNCTION__, String8(packageName).string(),
String8(internalCamId).string(), String8(externalCamId).string());
{
Mutex::Autolock lock(mInjectionParametersLock);
mInjectionInternalCamId = String8(internalCamId);
mInjectionExternalCamId = String8(externalCamId);
mInjectionStatusListener->addListener(callback);
*cameraInjectionSession = new CameraInjectionSession(this);
status_t res = NO_ERROR;
auto clientDescriptor = mActiveClientManager.get(mInjectionInternalCamId);
// If the client already exists, we can directly connect to the camera device through the
// client's injectCamera(), otherwise we need to wait until the client is established
// (execute connectHelper()) before injecting the camera to the camera device.
if (clientDescriptor != nullptr) {
mInjectionInitPending = false;
sp<BasicClient> clientSp = clientDescriptor->getValue();
res = checkIfInjectionCameraIsPresent(mInjectionExternalCamId, clientSp);
if(res != OK) {
return STATUS_ERROR_FMT(ERROR_DISCONNECTED,
"No camera device with ID \"%s\" currently available",
mInjectionExternalCamId.string());
}
res = clientSp->injectCamera(mInjectionExternalCamId, mCameraProviderManager);
if(res != OK) {
mInjectionStatusListener->notifyInjectionError(mInjectionExternalCamId, res);
}
} else {
mInjectionInitPending = true;
}
}
return binder::Status::ok();
}
void CameraService::removeByClient(const BasicClient* client) {
Mutex::Autolock lock(mServiceLock);
for (auto& i : mActiveClientManager.getAll()) {
auto clientSp = i->getValue();
if (clientSp.get() == client) {
cacheClientTagDumpIfNeeded(client->mCameraIdStr, clientSp.get());
mActiveClientManager.remove(i);
}
}
updateAudioRestrictionLocked();
}
bool CameraService::evictClientIdByRemote(const wp<IBinder>& remote) {
bool ret = false;
{
// Acquire mServiceLock and prevent other clients from connecting
std::unique_ptr<AutoConditionLock> lock =
AutoConditionLock::waitAndAcquire(mServiceLockWrapper);
std::vector<sp<BasicClient>> evicted;
for (auto& i : mActiveClientManager.getAll()) {
auto clientSp = i->getValue();
if (clientSp.get() == nullptr) {
ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__);
mActiveClientManager.remove(i);
continue;
}
if (remote == clientSp->getRemote()) {
mActiveClientManager.remove(i);
evicted.push_back(clientSp);
// Notify the client of disconnection
clientSp->notifyError(
hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED,
CaptureResultExtras());
}
}
// Do not hold mServiceLock while disconnecting clients, but retain the condition blocking
// other clients from connecting in mServiceLockWrapper if held
mServiceLock.unlock();
// Do not clear caller identity, remote caller should be client proccess
for (auto& i : evicted) {
if (i.get() != nullptr) {
i->disconnect();
ret = true;
}
}
// Reacquire mServiceLock
mServiceLock.lock();
} // lock is destroyed, allow further connect calls
return ret;
}
std::shared_ptr<CameraService::CameraState> CameraService::getCameraState(
const String8& cameraId) const {
std::shared_ptr<CameraState> state;
{
Mutex::Autolock lock(mCameraStatesLock);
auto iter = mCameraStates.find(cameraId);
if (iter != mCameraStates.end()) {
state = iter->second;
}
}
return state;
}
sp<CameraService::BasicClient> CameraService::removeClientLocked(const String8& cameraId) {
// Remove from active clients list
auto clientDescriptorPtr = mActiveClientManager.remove(cameraId);
if (clientDescriptorPtr == nullptr) {
ALOGW("%s: Could not evict client, no client for camera ID %s", __FUNCTION__,
cameraId.string());
return sp<BasicClient>{nullptr};
}
sp<BasicClient> client = clientDescriptorPtr->getValue();
if (client.get() != nullptr) {
cacheClientTagDumpIfNeeded(clientDescriptorPtr->getKey(), client.get());
}
return client;
}
void CameraService::doUserSwitch(const std::vector<int32_t>& newUserIds) {
// Acquire mServiceLock and prevent other clients from connecting
std::unique_ptr<AutoConditionLock> lock =
AutoConditionLock::waitAndAcquire(mServiceLockWrapper);
std::set<userid_t> newAllowedUsers;
for (size_t i = 0; i < newUserIds.size(); i++) {
if (newUserIds[i] < 0) {
ALOGE("%s: Bad user ID %d given during user switch, ignoring.",
__FUNCTION__, newUserIds[i]);
return;
}
newAllowedUsers.insert(static_cast<userid_t>(newUserIds[i]));
}
if (newAllowedUsers == mAllowedUsers) {
ALOGW("%s: Received notification of user switch with no updated user IDs.", __FUNCTION__);
return;
}
logUserSwitch(mAllowedUsers, newAllowedUsers);
mAllowedUsers = std::move(newAllowedUsers);
// Current user has switched, evict all current clients.
std::vector<sp<BasicClient>> evicted;
for (auto& i : mActiveClientManager.getAll()) {
auto clientSp = i->getValue();
if (clientSp.get() == nullptr) {
ALOGE("%s: Dead client still in mActiveClientManager.", __FUNCTION__);
continue;
}
// Don't evict clients that are still allowed.
uid_t clientUid = clientSp->getClientUid();
userid_t clientUserId = multiuser_get_user_id(clientUid);
if (mAllowedUsers.find(clientUserId) != mAllowedUsers.end()) {
continue;
}
evicted.push_back(clientSp);
String8 curTime = getFormattedCurrentTime();
ALOGE("Evicting conflicting client for camera ID %s due to user change",
i->getKey().string());
// Log the clients evicted
logEvent(String8::format("EVICT device %s client held by package %s (PID %"
PRId32 ", score %" PRId32 ", state %" PRId32 ")\n - Evicted due"
" to user switch.", i->getKey().string(),
String8{clientSp->getPackageName()}.string(),
i->getOwnerId(), i->getPriority().getScore(),
i->getPriority().getState()));
}
// Do not hold mServiceLock while disconnecting clients, but retain the condition
// blocking other clients from connecting in mServiceLockWrapper if held.
mServiceLock.unlock();
// Clear caller identity temporarily so client disconnect PID checks work correctly
int64_t token = CameraThreadState::clearCallingIdentity();
for (auto& i : evicted) {
i->disconnect();
}
CameraThreadState::restoreCallingIdentity(token);
// Reacquire mServiceLock
mServiceLock.lock();
}
void CameraService::logEvent(const char* event) {
String8 curTime = getFormattedCurrentTime();
Mutex::Autolock l(mLogLock);
String8 msg = String8::format("%s : %s", curTime.string(), event);
// For service error events, print the msg only once.
if(!msg.contains("SERVICE ERROR")) {
mEventLog.add(msg);
} else if(sServiceErrorEventSet.find(msg) == sServiceErrorEventSet.end()) {
// Error event not added to the dumpsys log before
mEventLog.add(msg);
sServiceErrorEventSet.insert(msg);
}
}
void CameraService::logDisconnected(const char* cameraId, int clientPid,
const char* clientPackage) {
// Log the clients evicted
logEvent(String8::format("DISCONNECT device %s client for package %s (PID %d)", cameraId,
clientPackage, clientPid));
}
void CameraService::logDisconnectedOffline(const char* cameraId, int clientPid,
const char* clientPackage) {
// Log the clients evicted
logEvent(String8::format("DISCONNECT offline device %s client for package %s (PID %d)",
cameraId, clientPackage, clientPid));
}
void CameraService::logConnected(const char* cameraId, int clientPid,
const char* clientPackage) {
// Log the clients evicted
logEvent(String8::format("CONNECT device %s client for package %s (PID %d)", cameraId,
clientPackage, clientPid));
}
void CameraService::logConnectedOffline(const char* cameraId, int clientPid,
const char* clientPackage) {
// Log the clients evicted
logEvent(String8::format("CONNECT offline device %s client for package %s (PID %d)", cameraId,
clientPackage, clientPid));
}
void CameraService::logRejected(const char* cameraId, int clientPid,
const char* clientPackage, const char* reason) {
// Log the client rejected
logEvent(String8::format("REJECT device %s client for package %s (PID %d), reason: (%s)",
cameraId, clientPackage, clientPid, reason));
}
void CameraService::logTorchEvent(const char* cameraId, const char *torchState, int clientPid) {
// Log torch event
logEvent(String8::format("Torch for camera id %s turned %s for client PID %d", cameraId,
torchState, clientPid));
}
void CameraService::logUserSwitch(const std::set<userid_t>& oldUserIds,
const std::set<userid_t>& newUserIds) {
String8 newUsers = toString(newUserIds);
String8 oldUsers = toString(oldUserIds);
if (oldUsers.size() == 0) {
oldUsers = "<None>";
}
// Log the new and old users
logEvent(String8::format("USER_SWITCH previous allowed user IDs: %s, current allowed user IDs: %s",
oldUsers.string(), newUsers.string()));
}
void CameraService::logDeviceRemoved(const char* cameraId, const char* reason) {
// Log the device removal
logEvent(String8::format("REMOVE device %s, reason: (%s)", cameraId, reason));
}
void CameraService::logDeviceAdded(const char* cameraId, const char* reason) {
// Log the device removal
logEvent(String8::format("ADD device %s, reason: (%s)", cameraId, reason));
}
void CameraService::logClientDied(int clientPid, const char* reason) {
// Log the device removal
logEvent(String8::format("DIED client(s) with PID %d, reason: (%s)", clientPid, reason));
}
void CameraService::logServiceError(const char* msg, int errorCode) {
String8 curTime = getFormattedCurrentTime();
logEvent(String8::format("SERVICE ERROR: %s : %d (%s)", msg, errorCode, strerror(-errorCode)));
}
status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
uint32_t flags) {
// Permission checks
switch (code) {
case SHELL_COMMAND_TRANSACTION: {
int in = data.readFileDescriptor();
int out = data.readFileDescriptor();
int err = data.readFileDescriptor();
int argc = data.readInt32();
Vector<String16> args;
for (int i = 0; i < argc && data.dataAvail() > 0; i++) {
args.add(data.readString16());
}
sp<IBinder> unusedCallback;
sp<IResultReceiver> resultReceiver;
status_t status;
if ((status = data.readNullableStrongBinder(&unusedCallback)) != NO_ERROR) {
return status;
}
if ((status = data.readNullableStrongBinder(&resultReceiver)) != NO_ERROR) {
return status;
}
status = shellCommand(in, out, err, args);
if (resultReceiver != nullptr) {
resultReceiver->send(status);
}
return NO_ERROR;
}
}
return BnCameraService::onTransact(code, data, reply, flags);
}
// We share the media players for shutter and recording sound for all clients.
// A reference count is kept to determine when we will actually release the
// media players.
sp<MediaPlayer> CameraService::newMediaPlayer(const char *file) {
sp<MediaPlayer> mp = new MediaPlayer();
status_t error;
if ((error = mp->setDataSource(NULL /* httpService */, file, NULL)) == NO_ERROR) {
mp->setAudioStreamType(AUDIO_STREAM_ENFORCED_AUDIBLE);
error = mp->prepare();
}
if (error != NO_ERROR) {
ALOGE("Failed to load CameraService sounds: %s", file);
mp->disconnect();
mp.clear();
return nullptr;
}
return mp;
}
void CameraService::increaseSoundRef() {
Mutex::Autolock lock(mSoundLock);
mSoundRef++;
}
void CameraService::loadSoundLocked(sound_kind kind) {
ATRACE_CALL();
LOG1("CameraService::loadSoundLocked ref=%d", mSoundRef);
if (SOUND_SHUTTER == kind && mSoundPlayer[SOUND_SHUTTER] == NULL) {
mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/product/media/audio/ui/camera_click.ogg");
if (mSoundPlayer[SOUND_SHUTTER] == nullptr) {
mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg");
}
} else if (SOUND_RECORDING_START == kind && mSoundPlayer[SOUND_RECORDING_START] == NULL) {
mSoundPlayer[SOUND_RECORDING_START] = newMediaPlayer("/product/media/audio/ui/VideoRecord.ogg");
if (mSoundPlayer[SOUND_RECORDING_START] == nullptr) {
mSoundPlayer[SOUND_RECORDING_START] =
newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg");
}
} else if (SOUND_RECORDING_STOP == kind && mSoundPlayer[SOUND_RECORDING_STOP] == NULL) {
mSoundPlayer[SOUND_RECORDING_STOP] = newMediaPlayer("/product/media/audio/ui/VideoStop.ogg");
if (mSoundPlayer[SOUND_RECORDING_STOP] == nullptr) {
mSoundPlayer[SOUND_RECORDING_STOP] = newMediaPlayer("/system/media/audio/ui/VideoStop.ogg");
}
}
}
void CameraService::decreaseSoundRef() {
Mutex::Autolock lock(mSoundLock);
LOG1("CameraService::decreaseSoundRef ref=%d", mSoundRef);
if (--mSoundRef) return;
for (int i = 0; i < NUM_SOUNDS; i++) {
if (mSoundPlayer[i] != 0) {
mSoundPlayer[i]->disconnect();
mSoundPlayer[i].clear();
}
}
}
void CameraService::playSound(sound_kind kind) {
ATRACE_CALL();
LOG1("playSound(%d)", kind);
if (kind < 0 || kind >= NUM_SOUNDS) {
ALOGE("%s: Invalid sound id requested: %d", __FUNCTION__, kind);
return;
}
Mutex::Autolock lock(mSoundLock);
loadSoundLocked(kind);
sp<MediaPlayer> player = mSoundPlayer[kind];
if (player != 0) {
player->seekTo(0);
player->start();
}
}
// ----------------------------------------------------------------------------
CameraService::Client::Client(const sp<CameraService>& cameraService,
const sp<ICameraClient>& cameraClient,
const String16& clientPackageName, bool systemNativeClient,
const std::optional<String16>& clientFeatureId,
const String8& cameraIdStr,
int api1CameraId, int cameraFacing, int sensorOrientation,
int clientPid, uid_t clientUid,
int servicePid, bool overrideToPortrait) :
CameraService::BasicClient(cameraService,
IInterface::asBinder(cameraClient),
clientPackageName, systemNativeClient, clientFeatureId,
cameraIdStr, cameraFacing, sensorOrientation,
clientPid, clientUid,
servicePid, overrideToPortrait),
mCameraId(api1CameraId)
{
int callingPid = CameraThreadState::getCallingPid();
LOG1("Client::Client E (pid %d, id %d)", callingPid, mCameraId);
mRemoteCallback = cameraClient;
cameraService->increaseSoundRef();
LOG1("Client::Client X (pid %d, id %d)", callingPid, mCameraId);
}
// tear down the client
CameraService::Client::~Client() {
ALOGV("~Client");
mDestructionStarted = true;
sCameraService->decreaseSoundRef();
// unconditionally disconnect. function is idempotent
Client::disconnect();
}
sp<CameraService> CameraService::BasicClient::BasicClient::sCameraService;
CameraService::BasicClient::BasicClient(const sp<CameraService>& cameraService,
const sp<IBinder>& remoteCallback,
const String16& clientPackageName, bool nativeClient,
const std::optional<String16>& clientFeatureId, const String8& cameraIdStr,
int cameraFacing, int sensorOrientation, int clientPid, uid_t clientUid,
int servicePid, bool overrideToPortrait):
mDestructionStarted(false),
mCameraIdStr(cameraIdStr), mCameraFacing(cameraFacing), mOrientation(sensorOrientation),
mClientPackageName(clientPackageName), mSystemNativeClient(nativeClient),
mClientFeatureId(clientFeatureId),
mClientPid(clientPid), mClientUid(clientUid),
mServicePid(servicePid),
mDisconnected(false), mUidIsTrusted(false),
mOverrideToPortrait(overrideToPortrait),
mAudioRestriction(hardware::camera2::ICameraDeviceUser::AUDIO_RESTRICTION_NONE),
mRemoteBinder(remoteCallback),
mOpsActive(false),
mOpsStreaming(false)
{
if (sCameraService == nullptr) {
sCameraService = cameraService;
}
// There are 2 scenarios in which a client won't have AppOps operations
// (both scenarios : native clients)
// 1) It's an system native client*, the package name will be empty
// and it will return from this function in the previous if condition
// (This is the same as the previously existing behavior).
// 2) It is a system native client, but its package name has been
// modified for debugging, however it still must not use AppOps since
// the package name is not a real one.
//
// * system native client - native client with UID < AID_APP_START. It
// doesn't exclude clients not on the system partition.
if (!mSystemNativeClient) {
mAppOpsManager = std::make_unique<AppOpsManager>();
}
mUidIsTrusted = isTrustedCallingUid(mClientUid);
}
CameraService::BasicClient::~BasicClient() {
ALOGV("~BasicClient");
mDestructionStarted = true;
}
binder::Status CameraService::BasicClient::disconnect() {
binder::Status res = Status::ok();
if (mDisconnected) {
return res;
}
mDisconnected = true;
sCameraService->removeByClient(this);
sCameraService->logDisconnected(mCameraIdStr, mClientPid, String8(mClientPackageName));
sCameraService->mCameraProviderManager->removeRef(CameraProviderManager::DeviceMode::CAMERA,
mCameraIdStr.c_str());
sp<IBinder> remote = getRemote();
if (remote != nullptr) {
remote->unlinkToDeath(sCameraService);
}
finishCameraOps();
// Notify flashlight that a camera device is closed.
sCameraService->mFlashlight->deviceClosed(mCameraIdStr);
ALOGI("%s: Disconnected client for camera %s for PID %d", __FUNCTION__, mCameraIdStr.string(),
mClientPid);
// client shouldn't be able to call into us anymore
mClientPid = 0;
return res;
}
status_t CameraService::BasicClient::dump(int, const Vector<String16>&) {
// No dumping of clients directly over Binder,
// must go through CameraService::dump
android_errorWriteWithInfoLog(SN_EVENT_LOG_ID, "26265403",
CameraThreadState::getCallingUid(), NULL, 0);
return OK;
}
status_t CameraService::BasicClient::startWatchingTags(const String8&, int) {
// Can't watch tags directly, must go through CameraService::startWatchingTags
return OK;
}
status_t CameraService::BasicClient::stopWatchingTags(int) {
// Can't watch tags directly, must go through CameraService::stopWatchingTags
return OK;
}
status_t CameraService::BasicClient::dumpWatchedEventsToVector(std::vector<std::string> &) {
// Can't watch tags directly, must go through CameraService::dumpWatchedEventsToVector
return OK;
}
String16 CameraService::BasicClient::getPackageName() const {
return mClientPackageName;
}
int CameraService::BasicClient::getCameraFacing() const {
return mCameraFacing;
}
int CameraService::BasicClient::getCameraOrientation() const {
return mOrientation;
}
int CameraService::BasicClient::getClientPid() const {
return mClientPid;
}
uid_t CameraService::BasicClient::getClientUid() const {
return mClientUid;
}
bool CameraService::BasicClient::canCastToApiClient(apiLevel level) const {
// Defaults to API2.
return level == API_2;
}
status_t CameraService::BasicClient::setAudioRestriction(int32_t mode) {
{
Mutex::Autolock l(mAudioRestrictionLock);
mAudioRestriction = mode;
}
sCameraService->updateAudioRestriction();
return OK;
}
int32_t CameraService::BasicClient::getServiceAudioRestriction() const {
return sCameraService->updateAudioRestriction();
}
int32_t CameraService::BasicClient::getAudioRestriction() const {
Mutex::Autolock l(mAudioRestrictionLock);
return mAudioRestriction;
}
bool CameraService::BasicClient::isValidAudioRestriction(int32_t mode) {
switch (mode) {
case hardware::camera2::ICameraDeviceUser::AUDIO_RESTRICTION_NONE:
case hardware::camera2::ICameraDeviceUser::AUDIO_RESTRICTION_VIBRATION:
case hardware::camera2::ICameraDeviceUser::AUDIO_RESTRICTION_VIBRATION_SOUND:
return true;
default:
return false;
}
}
status_t CameraService::BasicClient::handleAppOpMode(int32_t mode) {
if (mode == AppOpsManager::MODE_ERRORED) {
ALOGI("Camera %s: Access for \"%s\" has been revoked",
mCameraIdStr.string(), String8(mClientPackageName).string());
return PERMISSION_DENIED;
} else if (!mUidIsTrusted && mode == AppOpsManager::MODE_IGNORED) {
// If the calling Uid is trusted (a native service), the AppOpsManager could
// return MODE_IGNORED. Do not treat such case as error.
bool isUidActive = sCameraService->mUidPolicy->isUidActive(mClientUid,
mClientPackageName);
bool isCameraPrivacyEnabled =
sCameraService->mSensorPrivacyPolicy->isCameraPrivacyEnabled();
// We don't want to return EACCESS if the CameraPrivacy is enabled.
// We prefer to successfully open the camera and perform camera muting
// or blocking in connectHelper as handleAppOpMode can be called before the
// connection has been fully established and at that time camera muting
// capabilities are unknown.
if (!isUidActive || !isCameraPrivacyEnabled) {
ALOGI("Camera %s: Access for \"%s\" has been restricted",
mCameraIdStr.string(), String8(mClientPackageName).string());
// Return the same error as for device policy manager rejection
return -EACCES;
}
}
return OK;
}
status_t CameraService::BasicClient::startCameraOps() {
ATRACE_CALL();
{
ALOGV("%s: Start camera ops, package name = %s, client UID = %d",
__FUNCTION__, String8(mClientPackageName).string(), mClientUid);
}
if (mAppOpsManager != nullptr) {
// Notify app ops that the camera is not available
mOpsCallback = new OpsCallback(this);
mAppOpsManager->startWatchingMode(AppOpsManager::OP_CAMERA,
mClientPackageName, mOpsCallback);
// Just check for camera acccess here on open - delay startOp until
// camera frames start streaming in startCameraStreamingOps
int32_t mode = mAppOpsManager->checkOp(AppOpsManager::OP_CAMERA, mClientUid,
mClientPackageName);
status_t res = handleAppOpMode(mode);
if (res != OK) {
return res;
}
}
mOpsActive = true;
// Transition device availability listeners from PRESENT -> NOT_AVAILABLE
sCameraService->updateStatus(StatusInternal::NOT_AVAILABLE, mCameraIdStr);
sCameraService->mUidPolicy->registerMonitorUid(mClientUid);
// Notify listeners of camera open/close status
sCameraService->updateOpenCloseStatus(mCameraIdStr, true/*open*/, mClientPackageName);
return OK;
}
status_t CameraService::BasicClient::startCameraStreamingOps() {
ATRACE_CALL();
if (!mOpsActive) {
ALOGE("%s: Calling streaming start when not yet active", __FUNCTION__);
return INVALID_OPERATION;
}
if (mOpsStreaming) {
ALOGV("%s: Streaming already active!", __FUNCTION__);
return OK;
}
ALOGV("%s: Start camera streaming ops, package name = %s, client UID = %d",
__FUNCTION__, String8(mClientPackageName).string(), mClientUid);
if (mAppOpsManager != nullptr) {
int32_t mode = mAppOpsManager->startOpNoThrow(AppOpsManager::OP_CAMERA, mClientUid,
mClientPackageName, /*startIfModeDefault*/ false, mClientFeatureId,
String16("start camera ") + String16(mCameraIdStr));
status_t res = handleAppOpMode(mode);
if (res != OK) {
return res;
}
}
mOpsStreaming = true;
return OK;
}
status_t CameraService::BasicClient::noteAppOp() {
ATRACE_CALL();
ALOGV("%s: Start camera noteAppOp, package name = %s, client UID = %d",
__FUNCTION__, String8(mClientPackageName).string(), mClientUid);
// noteAppOp is only used for when camera mute is not supported, in order
// to trigger the sensor privacy "Unblock" dialog
if (mAppOpsManager != nullptr) {
int32_t mode = mAppOpsManager->noteOp(AppOpsManager::OP_CAMERA, mClientUid,
mClientPackageName, mClientFeatureId,
String16("start camera ") + String16(mCameraIdStr));
status_t res = handleAppOpMode(mode);
if (res != OK) {
return res;
}
}
return OK;
}
status_t CameraService::BasicClient::finishCameraStreamingOps() {
ATRACE_CALL();
if (!mOpsActive) {
ALOGE("%s: Calling streaming start when not yet active", __FUNCTION__);
return INVALID_OPERATION;
}
if (!mOpsStreaming) {
ALOGV("%s: Streaming not active!", __FUNCTION__);
return OK;
}
if (mAppOpsManager != nullptr) {
mAppOpsManager->finishOp(AppOpsManager::OP_CAMERA, mClientUid,
mClientPackageName, mClientFeatureId);
mOpsStreaming = false;
}
return OK;
}
status_t CameraService::BasicClient::finishCameraOps() {
ATRACE_CALL();
if (mOpsStreaming) {
// Make sure we've notified everyone about camera stopping
finishCameraStreamingOps();
}
// Check if startCameraOps succeeded, and if so, finish the camera op
if (mOpsActive) {
mOpsActive = false;
// This function is called when a client disconnects. This should
// release the camera, but actually only if it was in a proper
// functional state, i.e. with status NOT_AVAILABLE
std::initializer_list<StatusInternal> rejected = {StatusInternal::PRESENT,
StatusInternal::ENUMERATING, StatusInternal::NOT_PRESENT};
// Transition to PRESENT if the camera is not in either of the rejected states
sCameraService->updateStatus(StatusInternal::PRESENT,
mCameraIdStr, rejected);
}
// Always stop watching, even if no camera op is active
if (mOpsCallback != nullptr && mAppOpsManager != nullptr) {
mAppOpsManager->stopWatchingMode(mOpsCallback);
}
mOpsCallback.clear();
sCameraService->mUidPolicy->unregisterMonitorUid(mClientUid);
// Notify listeners of camera open/close status
sCameraService->updateOpenCloseStatus(mCameraIdStr, false/*open*/, mClientPackageName);
return OK;
}
void CameraService::BasicClient::opChanged(int32_t op, const String16&) {
ATRACE_CALL();
if (mAppOpsManager == nullptr) {
return;
}
// TODO : add offline camera session case
if (op != AppOpsManager::OP_CAMERA) {
ALOGW("Unexpected app ops notification received: %d", op);
return;
}
int32_t res;
res = mAppOpsManager->checkOp(AppOpsManager::OP_CAMERA,
mClientUid, mClientPackageName);
ALOGV("checkOp returns: %d, %s ", res,
res == AppOpsManager::MODE_ALLOWED ? "ALLOWED" :
res == AppOpsManager::MODE_IGNORED ? "IGNORED" :
res == AppOpsManager::MODE_ERRORED ? "ERRORED" :
"UNKNOWN");
if (res == AppOpsManager::MODE_ERRORED) {
ALOGI("Camera %s: Access for \"%s\" revoked", mCameraIdStr.string(),
String8(mClientPackageName).string());
block();
} else if (res == AppOpsManager::MODE_IGNORED) {
bool isUidActive = sCameraService->mUidPolicy->isUidActive(mClientUid, mClientPackageName);
bool isCameraPrivacyEnabled =
sCameraService->mSensorPrivacyPolicy->isCameraPrivacyEnabled();
ALOGI("Camera %s: Access for \"%s\" has been restricted, isUidTrusted %d, isUidActive %d",
mCameraIdStr.string(), String8(mClientPackageName).string(),
mUidIsTrusted, isUidActive);
// If the calling Uid is trusted (a native service), or the client Uid is active (WAR for
// b/175320666), the AppOpsManager could return MODE_IGNORED. Do not treat such cases as
// error.
if (!mUidIsTrusted) {
if (isUidActive && isCameraPrivacyEnabled && supportsCameraMute()) {
setCameraMute(true);
} else if (!isUidActive
|| (isCameraPrivacyEnabled && !supportsCameraMute())) {
block();
}
}
} else if (res == AppOpsManager::MODE_ALLOWED) {
setCameraMute(sCameraService->mOverrideCameraMuteMode);
}
}
void CameraService::BasicClient::block() {
ATRACE_CALL();
// Reset the client PID to allow server-initiated disconnect,
// and to prevent further calls by client.
mClientPid = CameraThreadState::getCallingPid();
CaptureResultExtras resultExtras; // a dummy result (invalid)
notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISABLED, resultExtras);
disconnect();
}
// ----------------------------------------------------------------------------
void CameraService::Client::notifyError(int32_t errorCode,
const CaptureResultExtras& resultExtras) {
(void) resultExtras;
if (mRemoteCallback != NULL) {
int32_t api1ErrorCode = CAMERA_ERROR_RELEASED;
if (errorCode == hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISABLED) {
api1ErrorCode = CAMERA_ERROR_DISABLED;
}
mRemoteCallback->notifyCallback(CAMERA_MSG_ERROR, api1ErrorCode, 0);
} else {
ALOGE("mRemoteCallback is NULL!!");
}
}
// NOTE: function is idempotent
binder::Status CameraService::Client::disconnect() {
ALOGV("Client::disconnect");
return BasicClient::disconnect();
}
bool CameraService::Client::canCastToApiClient(apiLevel level) const {
return level == API_1;
}
CameraService::Client::OpsCallback::OpsCallback(wp<BasicClient> client):
mClient(client) {
}
void CameraService::Client::OpsCallback::opChanged(int32_t op,
const String16& packageName) {
sp<BasicClient> client = mClient.promote();
if (client != NULL) {
client->opChanged(op, packageName);
}
}
// ----------------------------------------------------------------------------
// UidPolicy
// ----------------------------------------------------------------------------
void CameraService::UidPolicy::registerWithActivityManager() {
Mutex::Autolock _l(mUidLock);
if (mRegistered) return;
status_t res = mAm.linkToDeath(this);
mAm.registerUidObserver(this, ActivityManager::UID_OBSERVER_GONE
| ActivityManager::UID_OBSERVER_IDLE
| ActivityManager::UID_OBSERVER_ACTIVE | ActivityManager::UID_OBSERVER_PROCSTATE
| ActivityManager::UID_OBSERVER_PROC_OOM_ADJ,
ActivityManager::PROCESS_STATE_UNKNOWN,
String16("cameraserver"));
if (res == OK) {
mRegistered = true;
ALOGV("UidPolicy: Registered with ActivityManager");
}
}
void CameraService::UidPolicy::onServiceRegistration(const String16& name, const sp<IBinder>&) {
if (name != String16(kActivityServiceName)) {
return;
}
registerWithActivityManager();
}
void CameraService::UidPolicy::registerSelf() {
// Use check service to see if the activity service is available
// If not available then register for notifications, instead of blocking
// till the service is ready
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder = sm->checkService(String16(kActivityServiceName));
if (!binder) {
sm->registerForNotifications(String16(kActivityServiceName), this);
} else {
registerWithActivityManager();
}
}
void CameraService::UidPolicy::unregisterSelf() {
Mutex::Autolock _l(mUidLock);
mAm.unregisterUidObserver(this);
mAm.unlinkToDeath(this);
mRegistered = false;
mActiveUids.clear();
ALOGV("UidPolicy: Unregistered with ActivityManager");
}
void CameraService::UidPolicy::onUidGone(uid_t uid, bool disabled) {
onUidIdle(uid, disabled);
}
void CameraService::UidPolicy::onUidActive(uid_t uid) {
Mutex::Autolock _l(mUidLock);
mActiveUids.insert(uid);
}
void CameraService::UidPolicy::onUidIdle(uid_t uid, bool /* disabled */) {
bool deleted = false;
{
Mutex::Autolock _l(mUidLock);
if (mActiveUids.erase(uid) > 0) {
deleted = true;
}
}
if (deleted) {
sp<CameraService> service = mService.promote();
if (service != nullptr) {
service->blockClientsForUid(uid);
}
}
}
void CameraService::UidPolicy::onUidStateChanged(uid_t uid, int32_t procState,
int64_t procStateSeq __unused, int32_t capability __unused) {
bool procStateChange = false;
{
Mutex::Autolock _l(mUidLock);
if (mMonitoredUids.find(uid) != mMonitoredUids.end() &&
mMonitoredUids[uid].procState != procState) {
mMonitoredUids[uid].procState = procState;
procStateChange = true;
}
}
if (procStateChange) {
sp<CameraService> service = mService.promote();
if (service != nullptr) {
service->notifyMonitoredUids();
}
}
}
void CameraService::UidPolicy::onUidProcAdjChanged(uid_t uid) {
bool procAdjChange = false;
{
Mutex::Autolock _l(mUidLock);
if (mMonitoredUids.find(uid) != mMonitoredUids.end()) {
procAdjChange = true;
}
}
if (procAdjChange) {
sp<CameraService> service = mService.promote();
if (service != nullptr) {
service->notifyMonitoredUids();
}
}
}
void CameraService::UidPolicy::registerMonitorUid(uid_t uid) {
Mutex::Autolock _l(mUidLock);
auto it = mMonitoredUids.find(uid);
if (it != mMonitoredUids.end()) {
it->second.refCount++;
} else {
MonitoredUid monitoredUid;
monitoredUid.procState = ActivityManager::PROCESS_STATE_NONEXISTENT;
monitoredUid.refCount = 1;
mMonitoredUids.emplace(std::pair<uid_t, MonitoredUid>(uid, monitoredUid));
}
}
void CameraService::UidPolicy::unregisterMonitorUid(uid_t uid) {
Mutex::Autolock _l(mUidLock);
auto it = mMonitoredUids.find(uid);
if (it != mMonitoredUids.end()) {
it->second.refCount--;
if (it->second.refCount == 0) {
mMonitoredUids.erase(it);
}
} else {
ALOGE("%s: Trying to unregister uid: %d which is not monitored!", __FUNCTION__, uid);
}
}
bool CameraService::UidPolicy::isUidActive(uid_t uid, String16 callingPackage) {
Mutex::Autolock _l(mUidLock);
return isUidActiveLocked(uid, callingPackage);
}
static const int64_t kPollUidActiveTimeoutTotalMillis = 300;
static const int64_t kPollUidActiveTimeoutMillis = 50;
bool CameraService::UidPolicy::isUidActiveLocked(uid_t uid, String16 callingPackage) {
// Non-app UIDs are considered always active
// If activity manager is unreachable, assume everything is active
if (uid < FIRST_APPLICATION_UID || !mRegistered) {
return true;
}
auto it = mOverrideUids.find(uid);
if (it != mOverrideUids.end()) {
return it->second;
}
bool active = mActiveUids.find(uid) != mActiveUids.end();
if (!active) {
// We want active UIDs to always access camera with their first attempt since
// there is no guarantee the app is robustly written and would retry getting
// the camera on failure. The inverse case is not a problem as we would take
// camera away soon once we get the callback that the uid is no longer active.
ActivityManager am;
// Okay to access with a lock held as UID changes are dispatched without
// a lock and we are a higher level component.
int64_t startTimeMillis = 0;
do {
// TODO: Fix this b/109950150!
// Okay this is a hack. There is a race between the UID turning active and
// activity being resumed. The proper fix is very risky, so we temporary add
// some polling which should happen pretty rarely anyway as the race is hard
// to hit.
active = mActiveUids.find(uid) != mActiveUids.end();
if (!active) active = am.isUidActive(uid, callingPackage);
if (active) {
break;
}
if (startTimeMillis <= 0) {
startTimeMillis = uptimeMillis();
}
int64_t ellapsedTimeMillis = uptimeMillis() - startTimeMillis;
int64_t remainingTimeMillis = kPollUidActiveTimeoutTotalMillis - ellapsedTimeMillis;
if (remainingTimeMillis <= 0) {
break;
}
remainingTimeMillis = std::min(kPollUidActiveTimeoutMillis, remainingTimeMillis);
mUidLock.unlock();
usleep(remainingTimeMillis * 1000);
mUidLock.lock();
} while (true);
if (active) {
// Now that we found out the UID is actually active, cache that
mActiveUids.insert(uid);
}
}
return active;
}
int32_t CameraService::UidPolicy::getProcState(uid_t uid) {
Mutex::Autolock _l(mUidLock);
return getProcStateLocked(uid);
}
int32_t CameraService::UidPolicy::getProcStateLocked(uid_t uid) {
int32_t procState = ActivityManager::PROCESS_STATE_UNKNOWN;
if (mMonitoredUids.find(uid) != mMonitoredUids.end()) {
procState = mMonitoredUids[uid].procState;
}
return procState;
}
void CameraService::UidPolicy::UidPolicy::addOverrideUid(uid_t uid,
String16 callingPackage, bool active) {
updateOverrideUid(uid, callingPackage, active, true);
}
void CameraService::UidPolicy::removeOverrideUid(uid_t uid, String16 callingPackage) {
updateOverrideUid(uid, callingPackage, false, false);
}
void CameraService::UidPolicy::binderDied(const wp<IBinder>& /*who*/) {
Mutex::Autolock _l(mUidLock);
ALOGV("UidPolicy: ActivityManager has died");
mRegistered = false;
mActiveUids.clear();
}
void CameraService::UidPolicy::updateOverrideUid(uid_t uid, String16 callingPackage,
bool active, bool insert) {
bool wasActive = false;
bool isActive = false;
{
Mutex::Autolock _l(mUidLock);
wasActive = isUidActiveLocked(uid, callingPackage);
mOverrideUids.erase(uid);
if (insert) {
mOverrideUids.insert(std::pair<uid_t, bool>(uid, active));
}
isActive = isUidActiveLocked(uid, callingPackage);
}
if (wasActive != isActive && !isActive) {
sp<CameraService> service = mService.promote();
if (service != nullptr) {
service->blockClientsForUid(uid);
}
}
}
// ----------------------------------------------------------------------------
// SensorPrivacyPolicy
// ----------------------------------------------------------------------------
void CameraService::SensorPrivacyPolicy::registerWithSensorPrivacyManager()
{
Mutex::Autolock _l(mSensorPrivacyLock);
if (mRegistered) {
return;
}
hasCameraPrivacyFeature(); // Called so the result is cached
mSpm.addSensorPrivacyListener(this);
mSensorPrivacyEnabled = mSpm.isSensorPrivacyEnabled();
status_t res = mSpm.linkToDeath(this);
if (res == OK) {
mRegistered = true;
ALOGV("SensorPrivacyPolicy: Registered with SensorPrivacyManager");
}
}
void CameraService::SensorPrivacyPolicy::onServiceRegistration(const String16& name,
const sp<IBinder>&) {
if (name != String16(kSensorPrivacyServiceName)) {
return;
}
registerWithSensorPrivacyManager();
}
void CameraService::SensorPrivacyPolicy::registerSelf() {
// Use checkservice to see if the sensor_privacy service is available
// If service is not available then register for notification
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder = sm->checkService(String16(kSensorPrivacyServiceName));
if (!binder) {
sm->registerForNotifications(String16(kSensorPrivacyServiceName),this);
} else {
registerWithSensorPrivacyManager();
}
}
void CameraService::SensorPrivacyPolicy::unregisterSelf() {
Mutex::Autolock _l(mSensorPrivacyLock);
mSpm.removeSensorPrivacyListener(this);
mSpm.unlinkToDeath(this);
mRegistered = false;
ALOGV("SensorPrivacyPolicy: Unregistered with SensorPrivacyManager");
}
bool CameraService::SensorPrivacyPolicy::isSensorPrivacyEnabled() {
if (!mRegistered) {
registerWithSensorPrivacyManager();
}
Mutex::Autolock _l(mSensorPrivacyLock);
return mSensorPrivacyEnabled;
}
bool CameraService::SensorPrivacyPolicy::isCameraPrivacyEnabled() {
if (!hasCameraPrivacyFeature()) {
return false;
}
return mSpm.isToggleSensorPrivacyEnabled(SensorPrivacyManager::TOGGLE_SENSOR_CAMERA);
}
binder::Status CameraService::SensorPrivacyPolicy::onSensorPrivacyChanged(
int toggleType __unused, int sensor __unused, bool enabled) {
{
Mutex::Autolock _l(mSensorPrivacyLock);
mSensorPrivacyEnabled = enabled;
}
// if sensor privacy is enabled then block all clients from accessing the camera
if (enabled) {
sp<CameraService> service = mService.promote();
if (service != nullptr) {
service->blockAllClients();
}
}
return binder::Status::ok();
}
void CameraService::SensorPrivacyPolicy::binderDied(const wp<IBinder>& /*who*/) {
Mutex::Autolock _l(mSensorPrivacyLock);
ALOGV("SensorPrivacyPolicy: SensorPrivacyManager has died");
mRegistered = false;
}
bool CameraService::SensorPrivacyPolicy::hasCameraPrivacyFeature() {
bool supportsSoftwareToggle = mSpm.supportsSensorToggle(
SensorPrivacyManager::TOGGLE_TYPE_SOFTWARE, SensorPrivacyManager::TOGGLE_SENSOR_CAMERA);
bool supportsHardwareToggle = mSpm.supportsSensorToggle(
SensorPrivacyManager::TOGGLE_TYPE_HARDWARE, SensorPrivacyManager::TOGGLE_SENSOR_CAMERA);
return supportsSoftwareToggle || supportsHardwareToggle;
}
// ----------------------------------------------------------------------------
// CameraState
// ----------------------------------------------------------------------------
CameraService::CameraState::CameraState(const String8& id, int cost,
const std::set<String8>& conflicting, SystemCameraKind systemCameraKind,
const std::vector<std::string>& physicalCameras) : mId(id),
mStatus(StatusInternal::NOT_PRESENT), mCost(cost), mConflicting(conflicting),
mSystemCameraKind(systemCameraKind), mPhysicalCameras(physicalCameras) {}
CameraService::CameraState::~CameraState() {}
CameraService::StatusInternal CameraService::CameraState::getStatus() const {
Mutex::Autolock lock(mStatusLock);
return mStatus;
}
std::vector<String8> CameraService::CameraState::getUnavailablePhysicalIds() const {
Mutex::Autolock lock(mStatusLock);
std::vector<String8> res(mUnavailablePhysicalIds.begin(), mUnavailablePhysicalIds.end());
return res;
}
CameraParameters CameraService::CameraState::getShimParams() const {
return mShimParams;
}
void CameraService::CameraState::setShimParams(const CameraParameters& params) {
mShimParams = params;
}
int CameraService::CameraState::getCost() const {
return mCost;
}
std::set<String8> CameraService::CameraState::getConflicting() const {
return mConflicting;
}
String8 CameraService::CameraState::getId() const {
return mId;
}
SystemCameraKind CameraService::CameraState::getSystemCameraKind() const {
return mSystemCameraKind;
}
bool CameraService::CameraState::containsPhysicalCamera(const std::string& physicalCameraId) const {
return std::find(mPhysicalCameras.begin(), mPhysicalCameras.end(), physicalCameraId)
!= mPhysicalCameras.end();
}
bool CameraService::CameraState::addUnavailablePhysicalId(const String8& physicalId) {
Mutex::Autolock lock(mStatusLock);
auto result = mUnavailablePhysicalIds.insert(physicalId);
return result.second;
}
bool CameraService::CameraState::removeUnavailablePhysicalId(const String8& physicalId) {
Mutex::Autolock lock(mStatusLock);
auto count = mUnavailablePhysicalIds.erase(physicalId);
return count > 0;
}
void CameraService::CameraState::setClientPackage(const String8& clientPackage) {
Mutex::Autolock lock(mStatusLock);
mClientPackage = clientPackage;
}
String8 CameraService::CameraState::getClientPackage() const {
Mutex::Autolock lock(mStatusLock);
return mClientPackage;
}
// ----------------------------------------------------------------------------
// ClientEventListener
// ----------------------------------------------------------------------------
void CameraService::ClientEventListener::onClientAdded(
const resource_policy::ClientDescriptor<String8,
sp<CameraService::BasicClient>>& descriptor) {
const auto& basicClient = descriptor.getValue();
if (basicClient.get() != nullptr) {
BatteryNotifier& notifier(BatteryNotifier::getInstance());
notifier.noteStartCamera(descriptor.getKey(),
static_cast<int>(basicClient->getClientUid()));
}
}
void CameraService::ClientEventListener::onClientRemoved(
const resource_policy::ClientDescriptor<String8,
sp<CameraService::BasicClient>>& descriptor) {
const auto& basicClient = descriptor.getValue();
if (basicClient.get() != nullptr) {
BatteryNotifier& notifier(BatteryNotifier::getInstance());
notifier.noteStopCamera(descriptor.getKey(),
static_cast<int>(basicClient->getClientUid()));
}
}
// ----------------------------------------------------------------------------
// CameraClientManager
// ----------------------------------------------------------------------------
CameraService::CameraClientManager::CameraClientManager() {
setListener(std::make_shared<ClientEventListener>());
}
CameraService::CameraClientManager::~CameraClientManager() {}
sp<CameraService::BasicClient> CameraService::CameraClientManager::getCameraClient(
const String8& id) const {
auto descriptor = get(id);
if (descriptor == nullptr) {
return sp<BasicClient>{nullptr};
}
return descriptor->getValue();
}
String8 CameraService::CameraClientManager::toString() const {
auto all = getAll();
String8 ret("[");
bool hasAny = false;
for (auto& i : all) {
hasAny = true;
String8 key = i->getKey();
int32_t cost = i->getCost();
int32_t pid = i->getOwnerId();
int32_t score = i->getPriority().getScore();
int32_t state = i->getPriority().getState();
auto conflicting = i->getConflicting();
auto clientSp = i->getValue();
String8 packageName;
userid_t clientUserId = 0;
if (clientSp.get() != nullptr) {
packageName = String8{clientSp->getPackageName()};
uid_t clientUid = clientSp->getClientUid();
clientUserId = multiuser_get_user_id(clientUid);
}
ret.appendFormat("\n(Camera ID: %s, Cost: %" PRId32 ", PID: %" PRId32 ", Score: %"
PRId32 ", State: %" PRId32, key.string(), cost, pid, score, state);
if (clientSp.get() != nullptr) {
ret.appendFormat("User Id: %d, ", clientUserId);
}
if (packageName.size() != 0) {
ret.appendFormat("Client Package Name: %s", packageName.string());
}
ret.append(", Conflicting Client Devices: {");
for (auto& j : conflicting) {
ret.appendFormat("%s, ", j.string());
}
ret.append("})");
}
if (hasAny) ret.append("\n");
ret.append("]\n");
return ret;
}
CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor(
const String8& key, const sp<BasicClient>& value, int32_t cost,
const std::set<String8>& conflictingKeys, int32_t score, int32_t ownerId,
int32_t state, int32_t oomScoreOffset, bool systemNativeClient) {
int32_t score_adj = systemNativeClient ? kSystemNativeClientScore : score;
int32_t state_adj = systemNativeClient ? kSystemNativeClientState: state;
return std::make_shared<resource_policy::ClientDescriptor<String8, sp<BasicClient>>>(
key, value, cost, conflictingKeys, score_adj, ownerId, state_adj,
systemNativeClient, oomScoreOffset);
}
CameraService::DescriptorPtr CameraService::CameraClientManager::makeClientDescriptor(
const sp<BasicClient>& value, const CameraService::DescriptorPtr& partial,
int32_t oomScoreOffset, bool systemNativeClient) {
return makeClientDescriptor(partial->getKey(), value, partial->getCost(),
partial->getConflicting(), partial->getPriority().getScore(),
partial->getOwnerId(), partial->getPriority().getState(), oomScoreOffset,
systemNativeClient);
}
// ----------------------------------------------------------------------------
// InjectionStatusListener
// ----------------------------------------------------------------------------
void CameraService::InjectionStatusListener::addListener(
const sp<ICameraInjectionCallback>& callback) {
Mutex::Autolock lock(mListenerLock);
if (mCameraInjectionCallback) return;
status_t res = IInterface::asBinder(callback)->linkToDeath(this);
if (res == OK) {
mCameraInjectionCallback = callback;
}
}
void CameraService::InjectionStatusListener::removeListener() {
Mutex::Autolock lock(mListenerLock);
if (mCameraInjectionCallback == nullptr) {
ALOGW("InjectionStatusListener: mCameraInjectionCallback == nullptr");
return;
}
IInterface::asBinder(mCameraInjectionCallback)->unlinkToDeath(this);
mCameraInjectionCallback = nullptr;
}
void CameraService::InjectionStatusListener::notifyInjectionError(
String8 injectedCamId, status_t err) {
if (mCameraInjectionCallback == nullptr) {
ALOGW("InjectionStatusListener: mCameraInjectionCallback == nullptr");
return;
}
switch (err) {
case -ENODEV:
mCameraInjectionCallback->onInjectionError(
ICameraInjectionCallback::ERROR_INJECTION_SESSION);
ALOGE("No camera device with ID \"%s\" currently available!",
injectedCamId.string());
break;
case -EBUSY:
mCameraInjectionCallback->onInjectionError(
ICameraInjectionCallback::ERROR_INJECTION_SESSION);
ALOGE("Higher-priority client using camera, ID \"%s\" currently unavailable!",
injectedCamId.string());
break;
case DEAD_OBJECT:
mCameraInjectionCallback->onInjectionError(
ICameraInjectionCallback::ERROR_INJECTION_SESSION);
ALOGE("Camera ID \"%s\" object is dead!",
injectedCamId.string());
break;
case INVALID_OPERATION:
mCameraInjectionCallback->onInjectionError(
ICameraInjectionCallback::ERROR_INJECTION_SESSION);
ALOGE("Camera ID \"%s\" encountered an operating or internal error!",
injectedCamId.string());
break;
case UNKNOWN_TRANSACTION:
mCameraInjectionCallback->onInjectionError(
ICameraInjectionCallback::ERROR_INJECTION_UNSUPPORTED);
ALOGE("Camera ID \"%s\" method doesn't support!",
injectedCamId.string());
break;
default:
mCameraInjectionCallback->onInjectionError(
ICameraInjectionCallback::ERROR_INJECTION_INVALID_ERROR);
ALOGE("Unexpected error %s (%d) opening camera \"%s\"!",
strerror(-err), err, injectedCamId.string());
}
}
void CameraService::InjectionStatusListener::binderDied(
const wp<IBinder>& /*who*/) {
ALOGV("InjectionStatusListener: ICameraInjectionCallback has died");
auto parent = mParent.promote();
if (parent != nullptr) {
auto clientDescriptor = parent->mActiveClientManager.get(parent->mInjectionInternalCamId);
if (clientDescriptor != nullptr) {
BasicClient* baseClientPtr = clientDescriptor->getValue().get();
baseClientPtr->stopInjection();
}
parent->clearInjectionParameters();
}
}
// ----------------------------------------------------------------------------
// CameraInjectionSession
// ----------------------------------------------------------------------------
binder::Status CameraService::CameraInjectionSession::stopInjection() {
Mutex::Autolock lock(mInjectionSessionLock);
auto parent = mParent.promote();
if (parent == nullptr) {
ALOGE("CameraInjectionSession: Parent is gone");
return STATUS_ERROR(ICameraInjectionCallback::ERROR_INJECTION_SERVICE,
"Camera service encountered error");
}
status_t res = NO_ERROR;
auto clientDescriptor = parent->mActiveClientManager.get(parent->mInjectionInternalCamId);
if (clientDescriptor != nullptr) {
BasicClient* baseClientPtr = clientDescriptor->getValue().get();
res = baseClientPtr->stopInjection();
if (res != OK) {
ALOGE("CameraInjectionSession: Failed to stop the injection camera!"
" ret != NO_ERROR: %d", res);
return STATUS_ERROR(ICameraInjectionCallback::ERROR_INJECTION_SESSION,
"Camera session encountered error");
}
}
parent->clearInjectionParameters();
return binder::Status::ok();
}
// ----------------------------------------------------------------------------
static const int kDumpLockRetries = 50;
static const int kDumpLockSleep = 60000;
static bool tryLock(Mutex& mutex)
{
bool locked = false;
for (int i = 0; i < kDumpLockRetries; ++i) {
if (mutex.tryLock() == NO_ERROR) {
locked = true;
break;
}
usleep(kDumpLockSleep);
}
return locked;
}
void CameraService::cacheDump() {
if (mMemFd != -1) {
const Vector<String16> args;
ATRACE_CALL();
// Acquiring service lock here will avoid the deadlock since
// cacheDump will not be called during the second disconnect.
Mutex::Autolock lock(mServiceLock);
Mutex::Autolock l(mCameraStatesLock);
// Start collecting the info for open sessions and store it in temp file.
for (const auto& state : mCameraStates) {
String8 cameraId = state.first;
auto clientDescriptor = mActiveClientManager.get(cameraId);
if (clientDescriptor != nullptr) {
dprintf(mMemFd, "== Camera device %s dynamic info: ==\n", cameraId.string());
// Log the current open session info before device is disconnected.
dumpOpenSessionClientLogs(mMemFd, args, cameraId);
}
}
}
}
status_t CameraService::dump(int fd, const Vector<String16>& args) {
ATRACE_CALL();
if (checkCallingPermission(sDumpPermission) == false) {
dprintf(fd, "Permission Denial: can't dump CameraService from pid=%d, uid=%d\n",
CameraThreadState::getCallingPid(),
CameraThreadState::getCallingUid());
return NO_ERROR;
}
bool locked = tryLock(mServiceLock);
// failed to lock - CameraService is probably deadlocked
if (!locked) {
dprintf(fd, "!! CameraService may be deadlocked !!\n");
}
if (!mInitialized) {
dprintf(fd, "!! No camera HAL available !!\n");
// Dump event log for error information
dumpEventLog(fd);
if (locked) mServiceLock.unlock();
return NO_ERROR;
}
dprintf(fd, "\n== Service global info: ==\n\n");
dprintf(fd, "Number of camera devices: %d\n", mNumberOfCameras);
dprintf(fd, "Number of normal camera devices: %zu\n", mNormalDeviceIds.size());
dprintf(fd, "Number of public camera devices visible to API1: %zu\n",
mNormalDeviceIdsWithoutSystemCamera.size());
for (size_t i = 0; i < mNormalDeviceIds.size(); i++) {
dprintf(fd, " Device %zu maps to \"%s\"\n", i, mNormalDeviceIds[i].c_str());
}
String8 activeClientString = mActiveClientManager.toString();
dprintf(fd, "Active Camera Clients:\n%s", activeClientString.string());
dprintf(fd, "Allowed user IDs: %s\n", toString(mAllowedUsers).string());
if (mStreamUseCaseOverrides.size() > 0) {
dprintf(fd, "Active stream use case overrides:");
for (int64_t useCaseOverride : mStreamUseCaseOverrides) {
dprintf(fd, " %" PRId64, useCaseOverride);
}
dprintf(fd, "\n");
}
dumpEventLog(fd);
bool stateLocked = tryLock(mCameraStatesLock);
if (!stateLocked) {
dprintf(fd, "CameraStates in use, may be deadlocked\n");
}
int argSize = args.size();
for (int i = 0; i < argSize; i++) {
if (args[i] == TagMonitor::kMonitorOption) {
if (i + 1 < argSize) {
mMonitorTags = String8(args[i + 1]);
}
break;
}
}
for (auto& state : mCameraStates) {
String8 cameraId = state.first;
dprintf(fd, "== Camera device %s dynamic info: ==\n", cameraId.string());
CameraParameters p = state.second->getShimParams();
if (!p.isEmpty()) {
dprintf(fd, " Camera1 API shim is using parameters:\n ");
p.dump(fd, args);
}
auto clientDescriptor = mActiveClientManager.get(cameraId);
if (clientDescriptor != nullptr) {
// log the current open session info
dumpOpenSessionClientLogs(fd, args, cameraId);
} else {
dumpClosedSessionClientLogs(fd, cameraId);
}
}
if (stateLocked) mCameraStatesLock.unlock();
if (locked) mServiceLock.unlock();
mCameraProviderManager->dump(fd, args);
dprintf(fd, "\n== Vendor tags: ==\n\n");
sp<VendorTagDescriptor> desc = VendorTagDescriptor::getGlobalVendorTagDescriptor();
if (desc == NULL) {
sp<VendorTagDescriptorCache> cache =
VendorTagDescriptorCache::getGlobalVendorTagCache();
if (cache == NULL) {
dprintf(fd, "No vendor tags.\n");
} else {
cache->dump(fd, /*verbosity*/2, /*indentation*/2);
}
} else {
desc->dump(fd, /*verbosity*/2, /*indentation*/2);
}
// Dump camera traces if there were any
dprintf(fd, "\n");
camera3::CameraTraces::dump(fd);
// Process dump arguments, if any
int n = args.size();
String16 verboseOption("-v");
String16 unreachableOption("--unreachable");
for (int i = 0; i < n; i++) {
if (args[i] == verboseOption) {
// change logging level
if (i + 1 >= n) continue;
String8 levelStr(args[i+1]);
int level = atoi(levelStr.string());
dprintf(fd, "\nSetting log level to %d.\n", level);
setLogLevel(level);
} else if (args[i] == unreachableOption) {
// Dump memory analysis
// TODO - should limit be an argument parameter?
UnreachableMemoryInfo info;
bool success = GetUnreachableMemory(info, /*limit*/ 10000);
if (!success) {
dprintf(fd, "\n== Unable to dump unreachable memory. "
"Try disabling SELinux enforcement. ==\n");
} else {
dprintf(fd, "\n== Dumping unreachable memory: ==\n");
std::string s = info.ToString(/*log_contents*/ true);
write(fd, s.c_str(), s.size());
}
}
}
bool serviceLocked = tryLock(mServiceLock);
// Dump info from previous open sessions.
// Reposition the offset to beginning of the file before reading
if ((mMemFd >= 0) && (lseek(mMemFd, 0, SEEK_SET) != -1)) {
dprintf(fd, "\n**********Dumpsys from previous open session**********\n");
ssize_t size_read;
char buf[4096];
while ((size_read = read(mMemFd, buf, (sizeof(buf) - 1))) > 0) {
// Read data from file to a small buffer and write it to fd.
write(fd, buf, size_read);
if (size_read == -1) {
ALOGE("%s: Error during reading the file: %s", __FUNCTION__, sFileName);
break;
}
}
dprintf(fd, "\n**********End of Dumpsys from previous open session**********\n");
} else {
ALOGE("%s: Error during reading the file: %s", __FUNCTION__, sFileName);
}
if (serviceLocked) mServiceLock.unlock();
return NO_ERROR;
}
void CameraService::dumpOpenSessionClientLogs(int fd,
const Vector<String16>& args, const String8& cameraId) {
auto clientDescriptor = mActiveClientManager.get(cameraId);
dprintf(fd, " %s : Device %s is open. Client instance dump:\n",
getFormattedCurrentTime().string(),
cameraId.string());
dprintf(fd, " Client priority score: %d state: %d\n",
clientDescriptor->getPriority().getScore(),
clientDescriptor->getPriority().getState());
dprintf(fd, " Client PID: %d\n", clientDescriptor->getOwnerId());
auto client = clientDescriptor->getValue();
dprintf(fd, " Client package: %s\n",
String8(client->getPackageName()).string());
client->dumpClient(fd, args);
}
void CameraService::dumpClosedSessionClientLogs(int fd, const String8& cameraId) {
dprintf(fd, " Device %s is closed, no client instance\n",
cameraId.string());
}
void CameraService::dumpEventLog(int fd) {
dprintf(fd, "\n== Camera service events log (most recent at top): ==\n");
Mutex::Autolock l(mLogLock);
for (const auto& msg : mEventLog) {
dprintf(fd, " %s\n", msg.string());
}
if (mEventLog.size() == DEFAULT_EVENT_LOG_LENGTH) {
dprintf(fd, " ...\n");
} else if (mEventLog.size() == 0) {
dprintf(fd, " [no events yet]\n");
}
dprintf(fd, "\n");
}
void CameraService::cacheClientTagDumpIfNeeded(const char *cameraId, BasicClient* client) {
Mutex::Autolock lock(mLogLock);
if (!isClientWatchedLocked(client)) { return; }
std::vector<std::string> dumpVector;
client->dumpWatchedEventsToVector(dumpVector);
if (dumpVector.empty()) { return; }
std::string dumpString;
String8 currentTime = getFormattedCurrentTime();
dumpString += "Cached @ ";
dumpString += currentTime.string();
dumpString += "\n"; // First line is the timestamp of when client is cached.
const String16 &packageName = client->getPackageName();
String8 packageName8 = String8(packageName);
const char *printablePackageName = packageName8.lockBuffer(packageName.size());
size_t i = dumpVector.size();
// Store the string in reverse order (latest last)
while (i > 0) {
i--;
dumpString += cameraId;
dumpString += ":";
dumpString += printablePackageName;
dumpString += " ";
dumpString += dumpVector[i]; // implicitly ends with '\n'
}
packageName8.unlockBuffer();
mWatchedClientsDumpCache[packageName] = dumpString;
}
void CameraService::handleTorchClientBinderDied(const wp<IBinder> &who) {
Mutex::Autolock al(mTorchClientMapMutex);
for (size_t i = 0; i < mTorchClientMap.size(); i++) {
if (mTorchClientMap[i] == who) {
// turn off the torch mode that was turned on by dead client
String8 cameraId = mTorchClientMap.keyAt(i);
status_t res = mFlashlight->setTorchMode(cameraId, false);
if (res) {
ALOGE("%s: torch client died but couldn't turn off torch: "
"%s (%d)", __FUNCTION__, strerror(-res), res);
return;
}
mTorchClientMap.removeItemsAt(i);
break;
}
}
}
/*virtual*/void CameraService::binderDied(const wp<IBinder> &who) {
/**
* While tempting to promote the wp<IBinder> into a sp, it's actually not supported by the
* binder driver
*/
// PID here is approximate and can be wrong.
logClientDied(CameraThreadState::getCallingPid(), String8("Binder died unexpectedly"));
// check torch client
handleTorchClientBinderDied(who);
// check camera device client
if(!evictClientIdByRemote(who)) {
ALOGV("%s: Java client's binder death already cleaned up (normal case)", __FUNCTION__);
return;
}
ALOGE("%s: Java client's binder died, removing it from the list of active clients",
__FUNCTION__);
}
void CameraService::updateStatus(StatusInternal status, const String8& cameraId) {
updateStatus(status, cameraId, {});
}
void CameraService::updateStatus(StatusInternal status, const String8& cameraId,
std::initializer_list<StatusInternal> rejectSourceStates) {
// Do not lock mServiceLock here or can get into a deadlock from
// connect() -> disconnect -> updateStatus
auto state = getCameraState(cameraId);
if (state == nullptr) {
ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__,
cameraId.string());
return;
}
// Avoid calling getSystemCameraKind() with mStatusListenerLock held (b/141756275)
SystemCameraKind deviceKind = SystemCameraKind::PUBLIC;
if (getSystemCameraKind(cameraId, &deviceKind) != OK) {
ALOGE("%s: Invalid camera id %s, skipping", __FUNCTION__, cameraId.string());
return;
}
// Collect the logical cameras without holding mStatusLock in updateStatus
// as that can lead to a deadlock(b/162192331).
auto logicalCameraIds = getLogicalCameras(cameraId);
// Update the status for this camera state, then send the onStatusChangedCallbacks to each
// of the listeners with both the mStatusLock and mStatusListenerLock held
state->updateStatus(status, cameraId, rejectSourceStates, [this, &deviceKind,
&logicalCameraIds]
(const String8& cameraId, StatusInternal status) {
if (status != StatusInternal::ENUMERATING) {
// Update torch status if it has a flash unit.
Mutex::Autolock al(mTorchStatusMutex);
TorchModeStatus torchStatus;
if (getTorchStatusLocked(cameraId, &torchStatus) !=
NAME_NOT_FOUND) {
TorchModeStatus newTorchStatus =
status == StatusInternal::PRESENT ?
TorchModeStatus::AVAILABLE_OFF :
TorchModeStatus::NOT_AVAILABLE;
if (torchStatus != newTorchStatus) {
onTorchStatusChangedLocked(cameraId, newTorchStatus, deviceKind);
}
}
}
Mutex::Autolock lock(mStatusListenerLock);
notifyPhysicalCameraStatusLocked(mapToInterface(status), String16(cameraId),
logicalCameraIds, deviceKind);
for (auto& listener : mListenerList) {
bool isVendorListener = listener->isVendorListener();
if (shouldSkipStatusUpdates(deviceKind, isVendorListener,
listener->getListenerPid(), listener->getListenerUid()) ||
isVendorListener) {
ALOGV("Skipping discovery callback for system-only camera device %s",
cameraId.c_str());
continue;
}
auto ret = listener->getListener()->onStatusChanged(mapToInterface(status),
String16(cameraId));
listener->handleBinderStatus(ret,
"%s: Failed to trigger onStatusChanged callback for %d:%d: %d",
__FUNCTION__, listener->getListenerUid(), listener->getListenerPid(),
ret.exceptionCode());
}
});
}
void CameraService::updateOpenCloseStatus(const String8& cameraId, bool open,
const String16& clientPackageName) {
auto state = getCameraState(cameraId);
if (state == nullptr) {
ALOGW("%s: Could not update the status for %s, no such device exists", __FUNCTION__,
cameraId.string());
return;
}
if (open) {
state->setClientPackage(String8(clientPackageName));
} else {
state->setClientPackage(String8::empty());
}
Mutex::Autolock lock(mStatusListenerLock);
for (const auto& it : mListenerList) {
if (!it->isOpenCloseCallbackAllowed()) {
continue;
}
binder::Status ret;
String16 cameraId64(cameraId);
if (open) {
ret = it->getListener()->onCameraOpened(cameraId64, clientPackageName);
} else {
ret = it->getListener()->onCameraClosed(cameraId64);
}
it->handleBinderStatus(ret,
"%s: Failed to trigger onCameraOpened/onCameraClosed callback for %d:%d: %d",
__FUNCTION__, it->getListenerUid(), it->getListenerPid(), ret.exceptionCode());
}
}
template<class Func>
void CameraService::CameraState::updateStatus(StatusInternal status,
const String8& cameraId,
std::initializer_list<StatusInternal> rejectSourceStates,
Func onStatusUpdatedLocked) {
Mutex::Autolock lock(mStatusLock);
StatusInternal oldStatus = mStatus;
mStatus = status;
if (oldStatus == status) {
return;
}
ALOGV("%s: Status has changed for camera ID %s from %#x to %#x", __FUNCTION__,
cameraId.string(), oldStatus, status);
if (oldStatus == StatusInternal::NOT_PRESENT &&
(status != StatusInternal::PRESENT &&
status != StatusInternal::ENUMERATING)) {
ALOGW("%s: From NOT_PRESENT can only transition into PRESENT or ENUMERATING",
__FUNCTION__);
mStatus = oldStatus;
return;
}
/**
* Sometimes we want to conditionally do a transition.
* For example if a client disconnects, we want to go to PRESENT
* only if we weren't already in NOT_PRESENT or ENUMERATING.
*/
for (auto& rejectStatus : rejectSourceStates) {
if (oldStatus == rejectStatus) {
ALOGV("%s: Rejecting status transition for Camera ID %s, since the source "
"state was was in one of the bad states.", __FUNCTION__, cameraId.string());
mStatus = oldStatus;
return;
}
}
onStatusUpdatedLocked(cameraId, status);
}
status_t CameraService::getTorchStatusLocked(
const String8& cameraId,
TorchModeStatus *status) const {
if (!status) {
return BAD_VALUE;
}
ssize_t index = mTorchStatusMap.indexOfKey(cameraId);
if (index == NAME_NOT_FOUND) {
// invalid camera ID or the camera doesn't have a flash unit
return NAME_NOT_FOUND;
}
*status = mTorchStatusMap.valueAt(index);
return OK;
}
status_t CameraService::setTorchStatusLocked(const String8& cameraId,
TorchModeStatus status) {
ssize_t index = mTorchStatusMap.indexOfKey(cameraId);
if (index == NAME_NOT_FOUND) {
return BAD_VALUE;
}
mTorchStatusMap.editValueAt(index) = status;
return OK;
}
std::list<String16> CameraService::getLogicalCameras(
const String8& physicalCameraId) {
std::list<String16> retList;
Mutex::Autolock lock(mCameraStatesLock);
for (const auto& state : mCameraStates) {
if (state.second->containsPhysicalCamera(physicalCameraId.c_str())) {
retList.emplace_back(String16(state.first));
}
}
return retList;
}
void CameraService::notifyPhysicalCameraStatusLocked(int32_t status,
const String16& physicalCameraId, const std::list<String16>& logicalCameraIds,
SystemCameraKind deviceKind) {
// mStatusListenerLock is expected to be locked
for (const auto& logicalCameraId : logicalCameraIds) {
for (auto& listener : mListenerList) {
// Note: we check only the deviceKind of the physical camera id
// since, logical camera ids and their physical camera ids are
// guaranteed to have the same system camera kind.
if (shouldSkipStatusUpdates(deviceKind, listener->isVendorListener(),
listener->getListenerPid(), listener->getListenerUid())) {
ALOGV("Skipping discovery callback for system-only camera device %s",
String8(physicalCameraId).c_str());
continue;
}
auto ret = listener->getListener()->onPhysicalCameraStatusChanged(status,
logicalCameraId, physicalCameraId);
listener->handleBinderStatus(ret,
"%s: Failed to trigger onPhysicalCameraStatusChanged for %d:%d: %d",
__FUNCTION__, listener->getListenerUid(), listener->getListenerPid(),
ret.exceptionCode());
}
}
}
void CameraService::blockClientsForUid(uid_t uid) {
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr && basicClient->getClientUid() == uid) {
basicClient->block();
}
}
}
}
void CameraService::blockAllClients() {
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr) {
basicClient->block();
}
}
}
}
// NOTE: This is a remote API - make sure all args are validated
status_t CameraService::shellCommand(int in, int out, int err, const Vector<String16>& args) {
if (!checkCallingPermission(sManageCameraPermission, nullptr, nullptr)) {
return PERMISSION_DENIED;
}
if (in == BAD_TYPE || out == BAD_TYPE || err == BAD_TYPE) {
return BAD_VALUE;
}
if (args.size() >= 3 && args[0] == String16("set-uid-state")) {
return handleSetUidState(args, err);
} else if (args.size() >= 2 && args[0] == String16("reset-uid-state")) {
return handleResetUidState(args, err);
} else if (args.size() >= 2 && args[0] == String16("get-uid-state")) {
return handleGetUidState(args, out, err);
} else if (args.size() >= 2 && args[0] == String16("set-rotate-and-crop")) {
return handleSetRotateAndCrop(args);
} else if (args.size() >= 1 && args[0] == String16("get-rotate-and-crop")) {
return handleGetRotateAndCrop(out);
} else if (args.size() >= 2 && args[0] == String16("set-autoframing")) {
return handleSetAutoframing(args);
} else if (args.size() >= 1 && args[0] == String16("get-autoframing")) {
return handleGetAutoframing(out);
} else if (args.size() >= 2 && args[0] == String16("set-image-dump-mask")) {
return handleSetImageDumpMask(args);
} else if (args.size() >= 1 && args[0] == String16("get-image-dump-mask")) {
return handleGetImageDumpMask(out);
} else if (args.size() >= 2 && args[0] == String16("set-camera-mute")) {
return handleSetCameraMute(args);
} else if (args.size() >= 2 && args[0] == String16("set-stream-use-case-override")) {
return handleSetStreamUseCaseOverrides(args);
} else if (args.size() >= 1 && args[0] == String16("clear-stream-use-case-override")) {
handleClearStreamUseCaseOverrides();
return OK;
} else if (args.size() >= 2 && args[0] == String16("watch")) {
return handleWatchCommand(args, in, out);
} else if (args.size() >= 2 && args[0] == String16("set-watchdog")) {
return handleSetCameraServiceWatchdog(args);
} else if (args.size() == 1 && args[0] == String16("help")) {
printHelp(out);
return OK;
}
printHelp(err);
return BAD_VALUE;
}
status_t CameraService::handleSetUidState(const Vector<String16>& args, int err) {
String16 packageName = args[1];
bool active = false;
if (args[2] == String16("active")) {
active = true;
} else if ((args[2] != String16("idle"))) {
ALOGE("Expected active or idle but got: '%s'", String8(args[2]).string());
return BAD_VALUE;
}
int userId = 0;
if (args.size() >= 5 && args[3] == String16("--user")) {
userId = atoi(String8(args[4]));
}
uid_t uid;
if (getUidForPackage(packageName, userId, uid, err) == BAD_VALUE) {
return BAD_VALUE;
}
mUidPolicy->addOverrideUid(uid, packageName, active);
return NO_ERROR;
}
status_t CameraService::handleResetUidState(const Vector<String16>& args, int err) {
String16 packageName = args[1];
int userId = 0;
if (args.size() >= 4 && args[2] == String16("--user")) {
userId = atoi(String8(args[3]));
}
uid_t uid;
if (getUidForPackage(packageName, userId, uid, err) == BAD_VALUE) {
return BAD_VALUE;
}
mUidPolicy->removeOverrideUid(uid, packageName);
return NO_ERROR;
}
status_t CameraService::handleGetUidState(const Vector<String16>& args, int out, int err) {
String16 packageName = args[1];
int userId = 0;
if (args.size() >= 4 && args[2] == String16("--user")) {
userId = atoi(String8(args[3]));
}
uid_t uid;
if (getUidForPackage(packageName, userId, uid, err) == BAD_VALUE) {
return BAD_VALUE;
}
if (mUidPolicy->isUidActive(uid, packageName)) {
return dprintf(out, "active\n");
} else {
return dprintf(out, "idle\n");
}
}
status_t CameraService::handleSetRotateAndCrop(const Vector<String16>& args) {
int rotateValue = atoi(String8(args[1]));
if (rotateValue < ANDROID_SCALER_ROTATE_AND_CROP_NONE ||
rotateValue > ANDROID_SCALER_ROTATE_AND_CROP_AUTO) return BAD_VALUE;
Mutex::Autolock lock(mServiceLock);
mOverrideRotateAndCropMode = rotateValue;
if (rotateValue == ANDROID_SCALER_ROTATE_AND_CROP_AUTO) return OK;
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr) {
basicClient->setRotateAndCropOverride(rotateValue);
}
}
}
return OK;
}
status_t CameraService::handleSetAutoframing(const Vector<String16>& args) {
char* end;
int autoframingValue = (int) strtol(String8(args[1]), &end, /*base=*/10);
if ((*end != '\0') ||
(autoframingValue != ANDROID_CONTROL_AUTOFRAMING_OFF &&
autoframingValue != ANDROID_CONTROL_AUTOFRAMING_ON &&
autoframingValue != ANDROID_CONTROL_AUTOFRAMING_AUTO)) {
return BAD_VALUE;
}
Mutex::Autolock lock(mServiceLock);
mOverrideAutoframingMode = autoframingValue;
if (autoframingValue == ANDROID_CONTROL_AUTOFRAMING_AUTO) return OK;
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr) {
basicClient->setAutoframingOverride(autoframingValue);
}
}
}
return OK;
}
status_t CameraService::handleSetCameraServiceWatchdog(const Vector<String16>& args) {
int enableWatchdog = atoi(String8(args[1]));
if (enableWatchdog < 0 || enableWatchdog > 1) return BAD_VALUE;
Mutex::Autolock lock(mServiceLock);
mCameraServiceWatchdogEnabled = enableWatchdog;
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr) {
basicClient->setCameraServiceWatchdog(enableWatchdog);
}
}
}
return OK;
}
status_t CameraService::handleGetRotateAndCrop(int out) {
Mutex::Autolock lock(mServiceLock);
return dprintf(out, "rotateAndCrop override: %d\n", mOverrideRotateAndCropMode);
}
status_t CameraService::handleGetAutoframing(int out) {
Mutex::Autolock lock(mServiceLock);
return dprintf(out, "autoframing override: %d\n", mOverrideAutoframingMode);
}
status_t CameraService::handleSetImageDumpMask(const Vector<String16>& args) {
char *endPtr;
errno = 0;
String8 maskString8 = String8(args[1]);
long maskValue = strtol(maskString8.c_str(), &endPtr, 10);
if (errno != 0) return BAD_VALUE;
if (endPtr != maskString8.c_str() + maskString8.size()) return BAD_VALUE;
if (maskValue < 0 || maskValue > 1) return BAD_VALUE;
Mutex::Autolock lock(mServiceLock);
mImageDumpMask = maskValue;
return OK;
}
status_t CameraService::handleGetImageDumpMask(int out) {
Mutex::Autolock lock(mServiceLock);
return dprintf(out, "Image dump mask: %d\n", mImageDumpMask);
}
status_t CameraService::handleSetCameraMute(const Vector<String16>& args) {
int muteValue = strtol(String8(args[1]), nullptr, 10);
if (errno != 0) return BAD_VALUE;
if (muteValue < 0 || muteValue > 1) return BAD_VALUE;
Mutex::Autolock lock(mServiceLock);
mOverrideCameraMuteMode = (muteValue == 1);
const auto clients = mActiveClientManager.getAll();
for (auto& current : clients) {
if (current != nullptr) {
const auto basicClient = current->getValue();
if (basicClient.get() != nullptr) {
if (basicClient->supportsCameraMute()) {
basicClient->setCameraMute(mOverrideCameraMuteMode);
}
}
}
}
return OK;
}
status_t CameraService::handleSetStreamUseCaseOverrides(const Vector<String16>& args) {
std::vector<int64_t> useCasesOverride;
for (size_t i = 1; i < args.size(); i++) {
int64_t useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_DEFAULT;
String8 arg8 = String8(args[i]);
if (arg8 == "DEFAULT") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_DEFAULT;
} else if (arg8 == "PREVIEW") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW;
} else if (arg8 == "STILL_CAPTURE") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_STILL_CAPTURE;
} else if (arg8 == "VIDEO_RECORD") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_RECORD;
} else if (arg8 == "PREVIEW_VIDEO_STILL") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW_VIDEO_STILL;
} else if (arg8 == "VIDEO_CALL") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_CALL;
} else if (arg8 == "CROPPED_RAW") {
useCase = ANDROID_SCALER_AVAILABLE_STREAM_USE_CASES_CROPPED_RAW;
} else {
ALOGE("%s: Invalid stream use case %s", __FUNCTION__, arg8.c_str());
return BAD_VALUE;
}
useCasesOverride.push_back(useCase);
}
Mutex::Autolock lock(mServiceLock);
mStreamUseCaseOverrides = std::move(useCasesOverride);
return OK;
}
void CameraService::handleClearStreamUseCaseOverrides() {
Mutex::Autolock lock(mServiceLock);
mStreamUseCaseOverrides.clear();
}
status_t CameraService::handleWatchCommand(const Vector<String16>& args, int inFd, int outFd) {
if (args.size() >= 3 && args[1] == String16("start")) {
return startWatchingTags(args, outFd);
} else if (args.size() == 2 && args[1] == String16("stop")) {
return stopWatchingTags(outFd);
} else if (args.size() == 2 && args[1] == String16("dump")) {
return printWatchedTags(outFd);
} else if (args.size() >= 2 && args[1] == String16("live")) {
return printWatchedTagsUntilInterrupt(args, inFd, outFd);
} else if (args.size() == 2 && args[1] == String16("clear")) {
return clearCachedMonitoredTagDumps(outFd);
}
dprintf(outFd, "Camera service watch commands:\n"
" start -m <comma_separated_tag_list> [-c <comma_separated_client_list>]\n"
" starts watching the provided tags for clients with provided package\n"
" recognizes tag shorthands like '3a'\n"
" watches all clients if no client is passed, or if 'all' is listed\n"
" dump dumps the monitoring information and exits\n"
" stop stops watching all tags\n"
" live [-n <refresh_interval_ms>]\n"
" prints the monitored information in real time\n"
" Hit return to exit\n"
" clear clears all buffers storing information for watch command");
return BAD_VALUE;
}
status_t CameraService::startWatchingTags(const Vector<String16> &args, int outFd) {
Mutex::Autolock lock(mLogLock);
size_t tagsIdx; // index of '-m'
String16 tags("");
for (tagsIdx = 2; tagsIdx < args.size() && args[tagsIdx] != String16("-m"); tagsIdx++);
if (tagsIdx < args.size() - 1) {
tags = args[tagsIdx + 1];
} else {
dprintf(outFd, "No tags provided.\n");
return BAD_VALUE;
}
size_t clientsIdx; // index of '-c'
String16 clients = kWatchAllClientsFlag; // watch all clients if no clients are provided
for (clientsIdx = 2; clientsIdx < args.size() && args[clientsIdx] != String16("-c");
clientsIdx++);
if (clientsIdx < args.size() - 1) {
clients = args[clientsIdx + 1];
}
parseClientsToWatchLocked(String8(clients));
// track tags to initialize future clients with the monitoring information
mMonitorTags = String8(tags);
bool serviceLock = tryLock(mServiceLock);
int numWatchedClients = 0;
auto cameraClients = mActiveClientManager.getAll();
for (const auto &clientDescriptor: cameraClients) {
if (clientDescriptor == nullptr) { continue; }
sp<BasicClient> client = clientDescriptor->getValue();
if (client.get() == nullptr) { continue; }
if (isClientWatchedLocked(client.get())) {
client->startWatchingTags(mMonitorTags, outFd);
numWatchedClients++;
}
}
dprintf(outFd, "Started watching %d active clients\n", numWatchedClients);
if (serviceLock) { mServiceLock.unlock(); }
return OK;
}
status_t CameraService::stopWatchingTags(int outFd) {
// clear mMonitorTags to prevent new clients from monitoring tags at initialization
Mutex::Autolock lock(mLogLock);
mMonitorTags = String8::empty();
mWatchedClientPackages.clear();
mWatchedClientsDumpCache.clear();
bool serviceLock = tryLock(mServiceLock);
auto cameraClients = mActiveClientManager.getAll();
for (const auto &clientDescriptor : cameraClients) {
if (clientDescriptor == nullptr) { continue; }
sp<BasicClient> client = clientDescriptor->getValue();
if (client.get() == nullptr) { continue; }
client->stopWatchingTags(outFd);
}
dprintf(outFd, "Stopped watching all clients.\n");
if (serviceLock) { mServiceLock.unlock(); }
return OK;
}
status_t CameraService::clearCachedMonitoredTagDumps(int outFd) {
Mutex::Autolock lock(mLogLock);
size_t clearedSize = mWatchedClientsDumpCache.size();
mWatchedClientsDumpCache.clear();
dprintf(outFd, "Cleared tag information of %zu cached clients.\n", clearedSize);
return OK;
}
status_t CameraService::printWatchedTags(int outFd) {
Mutex::Autolock logLock(mLogLock);
std::set<String16> connectedMonitoredClients;
bool printedSomething = false; // tracks if any monitoring information was printed
// (from either cached or active clients)
bool serviceLock = tryLock(mServiceLock);
// get all watched clients that are currently connected
for (const auto &clientDescriptor: mActiveClientManager.getAll()) {
if (clientDescriptor == nullptr) { continue; }
sp<BasicClient> client = clientDescriptor->getValue();
if (client.get() == nullptr) { continue; }
if (!isClientWatchedLocked(client.get())) { continue; }
std::vector<std::string> dumpVector;
client->dumpWatchedEventsToVector(dumpVector);
size_t printIdx = dumpVector.size();
if (printIdx == 0) {
continue;
}
// Print tag dumps for active client
const String8 &cameraId = clientDescriptor->getKey();
String8 packageName8 = String8(client->getPackageName());
const char *printablePackageName = packageName8.lockBuffer(packageName8.size());
dprintf(outFd, "Client: %s (active)\n", printablePackageName);
while(printIdx > 0) {
printIdx--;
dprintf(outFd, "%s:%s %s", cameraId.string(), printablePackageName,
dumpVector[printIdx].c_str());
}
dprintf(outFd, "\n");
packageName8.unlockBuffer();
printedSomething = true;
connectedMonitoredClients.emplace(client->getPackageName());
}
if (serviceLock) { mServiceLock.unlock(); }
// Print entries in mWatchedClientsDumpCache for clients that are not connected
for (const auto &kv: mWatchedClientsDumpCache) {
const String16 &package = kv.first;
if (connectedMonitoredClients.find(package) != connectedMonitoredClients.end()) {
continue;
}
dprintf(outFd, "Client: %s (cached)\n", String8(package).string());
dprintf(outFd, "%s\n", kv.second.c_str());
printedSomething = true;
}
if (!printedSomething) {
dprintf(outFd, "No monitoring information to print.\n");
}
return OK;
}
// Print all events in vector `events' that came after lastPrintedEvent
void printNewWatchedEvents(int outFd,
const char *cameraId,
const String16 &packageName,
const std::vector<std::string> &events,
const std::string &lastPrintedEvent) {
if (events.empty()) { return; }
// index of lastPrintedEvent in events.
// lastPrintedIdx = events.size() if lastPrintedEvent is not in events
size_t lastPrintedIdx;
for (lastPrintedIdx = 0;
lastPrintedIdx < events.size() && lastPrintedEvent != events[lastPrintedIdx];
lastPrintedIdx++);
if (lastPrintedIdx == 0) { return; } // early exit if no new event in `events`
String8 packageName8(packageName);
const char *printablePackageName = packageName8.lockBuffer(packageName8.size());
// print events in chronological order (latest event last)
size_t idxToPrint = lastPrintedIdx;
do {
idxToPrint--;
dprintf(outFd, "%s:%s %s", cameraId, printablePackageName, events[idxToPrint].c_str());
} while (idxToPrint != 0);
packageName8.unlockBuffer();
}
// Returns true if adb shell cmd watch should be interrupted based on data in inFd. The watch
// command should be interrupted if the user presses the return key, or if user loses any way to
// signal interrupt.
// If timeoutMs == 0, this function will always return false
bool shouldInterruptWatchCommand(int inFd, int outFd, long timeoutMs) {
struct timeval startTime;
int startTimeError = gettimeofday(&startTime, nullptr);
if (startTimeError) {
dprintf(outFd, "Failed waiting for interrupt, aborting.\n");
return true;
}
const nfds_t numFds = 1;
struct pollfd pollFd = { .fd = inFd, .events = POLLIN, .revents = 0 };
struct timeval currTime;
char buffer[2];
while(true) {
int currTimeError = gettimeofday(&currTime, nullptr);
if (currTimeError) {
dprintf(outFd, "Failed waiting for interrupt, aborting.\n");
return true;
}
long elapsedTimeMs = ((currTime.tv_sec - startTime.tv_sec) * 1000L)
+ ((currTime.tv_usec - startTime.tv_usec) / 1000L);
int remainingTimeMs = (int) (timeoutMs - elapsedTimeMs);
if (remainingTimeMs <= 0) {
// No user interrupt within timeoutMs, don't interrupt watch command
return false;
}
int numFdsUpdated = poll(&pollFd, numFds, remainingTimeMs);
if (numFdsUpdated < 0) {
dprintf(outFd, "Failed while waiting for user input. Exiting.\n");
return true;
}
if (numFdsUpdated == 0) {
// No user input within timeoutMs, don't interrupt watch command
return false;
}
if (!(pollFd.revents & POLLIN)) {
dprintf(outFd, "Failed while waiting for user input. Exiting.\n");
return true;
}
ssize_t sizeRead = read(inFd, buffer, sizeof(buffer) - 1);
if (sizeRead < 0) {
dprintf(outFd, "Error reading user input. Exiting.\n");
return true;
}
if (sizeRead == 0) {
// Reached end of input fd (can happen if input is piped)
// User has no way to signal an interrupt, so interrupt here
return true;
}
if (buffer[0] == '\n') {
// User pressed return, interrupt watch command.
return true;
}
}
}
status_t CameraService::printWatchedTagsUntilInterrupt(const Vector<String16> &args,
int inFd, int outFd) {
// Figure out refresh interval, if present in args
long refreshTimeoutMs = 1000L; // refresh every 1s by default
if (args.size() > 2) {
size_t intervalIdx; // index of '-n'
for (intervalIdx = 2; intervalIdx < args.size() && String16("-n") != args[intervalIdx];
intervalIdx++);
size_t intervalValIdx = intervalIdx + 1;
if (intervalValIdx < args.size()) {
refreshTimeoutMs = strtol(String8(args[intervalValIdx].string()), nullptr, 10);
if (errno) { return BAD_VALUE; }
}
}
// Set min timeout of 10ms. This prevents edge cases in polling when timeout of 0 is passed.
refreshTimeoutMs = refreshTimeoutMs < 10 ? 10 : refreshTimeoutMs;
dprintf(outFd, "Press return to exit...\n\n");
std::map<String16, std::string> packageNameToLastEvent;
while (true) {
bool serviceLock = tryLock(mServiceLock);
auto cameraClients = mActiveClientManager.getAll();
if (serviceLock) { mServiceLock.unlock(); }
for (const auto& clientDescriptor : cameraClients) {
Mutex::Autolock lock(mLogLock);
if (clientDescriptor == nullptr) { continue; }
sp<BasicClient> client = clientDescriptor->getValue();
if (client.get() == nullptr) { continue; }
if (!isClientWatchedLocked(client.get())) { continue; }
const String16 &packageName = client->getPackageName();
// This also initializes the map entries with an empty string
const std::string& lastPrintedEvent = packageNameToLastEvent[packageName];
std::vector<std::string> latestEvents;
client->dumpWatchedEventsToVector(latestEvents);
if (!latestEvents.empty()) {
String8 cameraId = clientDescriptor->getKey();
const char *printableCameraId = cameraId.lockBuffer(cameraId.size());
printNewWatchedEvents(outFd,
printableCameraId,
packageName,
latestEvents,
lastPrintedEvent);
packageNameToLastEvent[packageName] = latestEvents[0];
cameraId.unlockBuffer();
}
}
if (shouldInterruptWatchCommand(inFd, outFd, refreshTimeoutMs)) {
break;
}
}
return OK;
}
void CameraService::parseClientsToWatchLocked(String8 clients) {
mWatchedClientPackages.clear();
const char *allSentinel = String8(kWatchAllClientsFlag).string();
char *tokenized = clients.lockBuffer(clients.size());
char *savePtr;
char *nextClient = strtok_r(tokenized, ",", &savePtr);
while (nextClient != nullptr) {
if (strcmp(nextClient, allSentinel) == 0) {
// Don't need to track any other package if 'all' is present
mWatchedClientPackages.clear();
mWatchedClientPackages.emplace(kWatchAllClientsFlag);
break;
}
// track package names
mWatchedClientPackages.emplace(nextClient);
nextClient = strtok_r(nullptr, ",", &savePtr);
}
clients.unlockBuffer();
}
status_t CameraService::printHelp(int out) {
return dprintf(out, "Camera service commands:\n"
" get-uid-state <PACKAGE> [--user USER_ID] gets the uid state\n"
" set-uid-state <PACKAGE> <active|idle> [--user USER_ID] overrides the uid state\n"
" reset-uid-state <PACKAGE> [--user USER_ID] clears the uid state override\n"
" set-rotate-and-crop <ROTATION> overrides the rotate-and-crop value for AUTO backcompat\n"
" Valid values 0=0 deg, 1=90 deg, 2=180 deg, 3=270 deg, 4=No override\n"
" get-rotate-and-crop returns the current override rotate-and-crop value\n"
" set-autoframing <VALUE> overrides the autoframing value for AUTO\n"
" Valid values 0=false, 1=true, 2=auto\n"
" get-autoframing returns the current override autoframing value\n"
" set-image-dump-mask <MASK> specifies the formats to be saved to disk\n"
" Valid values 0=OFF, 1=ON for JPEG\n"
" get-image-dump-mask returns the current image-dump-mask value\n"
" set-camera-mute <0/1> enable or disable camera muting\n"
" set-stream-use-case-override <usecase1> <usecase2> ... override stream use cases\n"
" Use cases applied in descending resolutions. So usecase1 is assigned to the\n"
" largest resolution, usecase2 is assigned to the 2nd largest resolution, and so\n"
" on. In case the number of usecases is smaller than the number of streams, the\n"
" last use case is assigned to all the remaining streams. In case of multiple\n"
" streams with the same resolution, the tie-breaker is (JPEG, RAW, YUV, and PRIV)\n"
" Valid values are (case sensitive): DEFAULT, PREVIEW, STILL_CAPTURE, VIDEO_RECORD,\n"
" PREVIEW_VIDEO_STILL, VIDEO_CALL, CROPPED_RAW\n"
" clear-stream-use-case-override clear the stream use case override\n"
" watch <start|stop|dump|print|clear> manages tag monitoring in connected clients\n"
" help print this message\n");
}
bool CameraService::isClientWatched(const BasicClient *client) {
Mutex::Autolock lock(mLogLock);
return isClientWatchedLocked(client);
}
bool CameraService::isClientWatchedLocked(const BasicClient *client) {
return mWatchedClientPackages.find(kWatchAllClientsFlag) != mWatchedClientPackages.end() ||
mWatchedClientPackages.find(client->getPackageName()) != mWatchedClientPackages.end();
}
int32_t CameraService::updateAudioRestriction() {
Mutex::Autolock lock(mServiceLock);
return updateAudioRestrictionLocked();
}
int32_t CameraService::updateAudioRestrictionLocked() {
int32_t mode = 0;
// iterate through all active client
for (const auto& i : mActiveClientManager.getAll()) {
const auto clientSp = i->getValue();
mode |= clientSp->getAudioRestriction();
}
bool modeChanged = (mAudioRestriction != mode);
mAudioRestriction = mode;
if (modeChanged) {
mAppOps.setCameraAudioRestriction(mode);
}
return mode;
}
status_t CameraService::checkIfInjectionCameraIsPresent(const String8& externalCamId,
sp<BasicClient> clientSp) {
std::unique_ptr<AutoConditionLock> lock =
AutoConditionLock::waitAndAcquire(mServiceLockWrapper);
status_t res = NO_ERROR;
if ((res = checkIfDeviceIsUsable(externalCamId)) != NO_ERROR) {
ALOGW("Device %s is not usable!", externalCamId.string());
mInjectionStatusListener->notifyInjectionError(
externalCamId, UNKNOWN_TRANSACTION);
clientSp->notifyError(
hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED,
CaptureResultExtras());
// Do not hold mServiceLock while disconnecting clients, but retain the condition blocking
// other clients from connecting in mServiceLockWrapper if held
mServiceLock.unlock();
// Clear caller identity temporarily so client disconnect PID checks work correctly
int64_t token = CameraThreadState::clearCallingIdentity();
clientSp->disconnect();
CameraThreadState::restoreCallingIdentity(token);
// Reacquire mServiceLock
mServiceLock.lock();
}
return res;
}
void CameraService::clearInjectionParameters() {
{
Mutex::Autolock lock(mInjectionParametersLock);
mInjectionInitPending = false;
mInjectionInternalCamId = "";
}
mInjectionExternalCamId = "";
mInjectionStatusListener->removeListener();
}
}; // namespace android