summaryrefslogtreecommitdiffstats
path: root/services/sensorservice/SensorService.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'services/sensorservice/SensorService.cpp')
-rw-r--r--services/sensorservice/SensorService.cpp715
1 files changed, 538 insertions, 177 deletions
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index a857366..40b21a9 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -31,6 +31,7 @@
#include <utils/Singleton.h>
#include <utils/String16.h>
+#include <binder/AppOpsManager.h>
#include <binder/BinderService.h>
#include <binder/IServiceManager.h>
#include <binder/PermissionCache.h>
@@ -63,7 +64,9 @@ namespace android {
*
*/
-const char* SensorService::WAKE_LOCK_NAME = "SensorService";
+const char* SensorService::WAKE_LOCK_NAME = "SensorService_wakelock";
+// Permissions.
+static const String16 sDump("android.permission.DUMP");
SensorService::SensorService()
: mInitCheck(NO_INIT), mSocketBufferSize(SOCKET_BUFFER_SIZE_NON_BATCHED),
@@ -74,7 +77,6 @@ SensorService::SensorService()
void SensorService::onFirstRef()
{
ALOGD("nuSensorService starting...");
-
SensorDevice& dev(SensorDevice::getInstance());
if (dev.initCheck() == NO_ERROR) {
@@ -82,7 +84,7 @@ void SensorService::onFirstRef()
ssize_t count = dev.getSensorList(&list);
if (count > 0) {
ssize_t orientationIndex = -1;
- bool hasGyro = false;
+ bool hasGyro = false, hasAccel = false, hasMag = false;
uint32_t virtualSensorsNeeds =
(1<<SENSOR_TYPE_GRAVITY) |
(1<<SENSOR_TYPE_LINEAR_ACCELERATION) |
@@ -92,6 +94,12 @@ void SensorService::onFirstRef()
for (ssize_t i=0 ; i<count ; i++) {
registerSensor( new HardwareSensor(list[i]) );
switch (list[i].type) {
+ case SENSOR_TYPE_ACCELEROMETER:
+ hasAccel = true;
+ break;
+ case SENSOR_TYPE_MAGNETIC_FIELD:
+ hasMag = true;
+ break;
case SENSOR_TYPE_ORIENTATION:
orientationIndex = i;
break;
@@ -115,7 +123,7 @@ void SensorService::onFirstRef()
// build the sensor list returned to users
mUserSensorList = mSensorList;
- if (hasGyro) {
+ if (hasGyro && hasAccel && hasMag) {
Sensor aSensor;
// Add Android virtual sensors if they're not already
@@ -154,7 +162,7 @@ void SensorService::onFirstRef()
// Check if the device really supports batching by looking at the FIFO event
// counts for each sensor.
bool batchingSupported = false;
- for (int i = 0; i < mSensorList.size(); ++i) {
+ for (size_t i = 0; i < mSensorList.size(); ++i) {
if (mSensorList[i].getFifoMaxEventCount() > 0) {
batchingSupported = true;
break;
@@ -190,10 +198,16 @@ void SensorService::onFirstRef()
mSensorEventBuffer = new sensors_event_t[minBufferSize];
mSensorEventScratch = new sensors_event_t[minBufferSize];
mMapFlushEventsToConnections = new SensorEventConnection const * [minBufferSize];
+ mCurrentOperatingMode = NORMAL;
+
+ mNextSensorRegIndex = 0;
+ for (int i = 0; i < SENSOR_REGISTRATIONS_BUF_SIZE; ++i) {
+ mLastNSensorRegistrations.push();
+ }
+ mInitCheck = NO_ERROR;
mAckReceiver = new SensorEventAckReceiver(this);
mAckReceiver->run("SensorEventAckReceiver", PRIORITY_URGENT_DISPLAY);
- mInitCheck = NO_ERROR;
run("SensorService", PRIORITY_URGENT_DISPLAY);
}
}
@@ -210,7 +224,7 @@ Sensor SensorService::registerSensor(SensorInterface* s)
// add to our handle->SensorInterface mapping
mSensorMap.add(sensor.getHandle(), s);
// create an entry in the mLastEventSeen array
- mLastEventSeen.add(sensor.getHandle(), event);
+ mLastEventSeen.add(sensor.getHandle(), NULL);
return sensor;
}
@@ -228,9 +242,7 @@ SensorService::~SensorService()
delete mSensorMap.valueAt(i);
}
-static const String16 sDump("android.permission.DUMP");
-
-status_t SensorService::dump(int fd, const Vector<String16>& /*args*/)
+status_t SensorService::dump(int fd, const Vector<String16>& args)
{
String8 result;
if (!PermissionCache::checkCallingPermission(sDump)) {
@@ -239,116 +251,188 @@ status_t SensorService::dump(int fd, const Vector<String16>& /*args*/)
IPCThreadState::self()->getCallingPid(),
IPCThreadState::self()->getCallingUid());
} else {
+ if (args.size() > 2) {
+ return INVALID_OPERATION;
+ }
Mutex::Autolock _l(mLock);
- result.append("Sensor List:\n");
- for (size_t i=0 ; i<mSensorList.size() ; i++) {
- const Sensor& s(mSensorList[i]);
- const sensors_event_t& e(mLastEventSeen.valueFor(s.getHandle()));
- result.appendFormat(
- "%-15s| %-10s| version=%d |%-20s| 0x%08x | \"%s\" | type=%d |",
- s.getName().string(),
- s.getVendor().string(),
- s.getVersion(),
- s.getStringType().string(),
- s.getHandle(),
- s.getRequiredPermission().string(),
- s.getType());
-
- const int reportingMode = s.getReportingMode();
- if (reportingMode == AREPORTING_MODE_CONTINUOUS) {
- result.append(" continuous | ");
- } else if (reportingMode == AREPORTING_MODE_ON_CHANGE) {
- result.append(" on-change | ");
- } else if (reportingMode == AREPORTING_MODE_ONE_SHOT) {
- result.append(" one-shot | ");
- } else {
- result.append(" special-trigger | ");
+ SensorDevice& dev(SensorDevice::getInstance());
+ if (args.size() == 2 && args[0] == String16("restrict")) {
+ // If already in restricted mode. Ignore.
+ if (mCurrentOperatingMode == RESTRICTED) {
+ return status_t(NO_ERROR);
}
-
- if (s.getMaxDelay() > 0) {
- result.appendFormat("minRate=%.2fHz | ", 1e6f / s.getMaxDelay());
- } else {
- result.appendFormat("maxDelay=%dus |", s.getMaxDelay());
+ // If in any mode other than normal, ignore.
+ if (mCurrentOperatingMode != NORMAL) {
+ return INVALID_OPERATION;
}
-
- if (s.getMinDelay() > 0) {
- result.appendFormat("maxRate=%.2fHz | ", 1e6f / s.getMinDelay());
- } else {
- result.appendFormat("minDelay=%dus |", s.getMinDelay());
+ mCurrentOperatingMode = RESTRICTED;
+ dev.disableAllSensors();
+ // Clear all pending flush connections for all active sensors. If one of the active
+ // connections has called flush() and the underlying sensor has been disabled before a
+ // flush complete event is returned, we need to remove the connection from this queue.
+ for (size_t i=0 ; i< mActiveSensors.size(); ++i) {
+ mActiveSensors.valueAt(i)->clearAllPendingFlushConnections();
}
-
- if (s.getFifoMaxEventCount() > 0) {
- result.appendFormat("FifoMax=%d events | ",
- s.getFifoMaxEventCount());
- } else {
- result.append("no batching | ");
+ mWhiteListedPackage.setTo(String8(args[1]));
+ return status_t(NO_ERROR);
+ } else if (args.size() == 1 && args[0] == String16("enable")) {
+ // If currently in restricted mode, reset back to NORMAL mode else ignore.
+ if (mCurrentOperatingMode == RESTRICTED) {
+ mCurrentOperatingMode = NORMAL;
+ dev.enableAllSensors();
}
-
- if (s.isWakeUpSensor()) {
- result.appendFormat("wakeUp | ");
+ if (mCurrentOperatingMode == DATA_INJECTION) {
+ resetToNormalModeLocked();
+ }
+ mWhiteListedPackage.clear();
+ return status_t(NO_ERROR);
+ } else if (args.size() == 2 && args[0] == String16("data_injection")) {
+ if (mCurrentOperatingMode == NORMAL) {
+ dev.disableAllSensors();
+ status_t err = dev.setMode(DATA_INJECTION);
+ if (err == NO_ERROR) {
+ mCurrentOperatingMode = DATA_INJECTION;
+ } else {
+ // Re-enable sensors.
+ dev.enableAllSensors();
+ }
+ mWhiteListedPackage.setTo(String8(args[1]));
+ return NO_ERROR;
+ } else if (mCurrentOperatingMode == DATA_INJECTION) {
+ // Already in DATA_INJECTION mode. Treat this as a no_op.
+ return NO_ERROR;
} else {
- result.appendFormat("non-wakeUp | ");
+ // Transition to data injection mode supported only from NORMAL mode.
+ return INVALID_OPERATION;
}
+ } else if (mSensorList.size() == 0) {
+ result.append("No Sensors on the device\n");
+ } else {
+ // Default dump the sensor list and debugging information.
+ result.append("Sensor List:\n");
+ for (size_t i=0 ; i<mSensorList.size() ; i++) {
+ const Sensor& s(mSensorList[i]);
+ result.appendFormat(
+ "%-15s| %-10s| version=%d |%-20s| 0x%08x | \"%s\" | type=%d |",
+ s.getName().string(),
+ s.getVendor().string(),
+ s.getVersion(),
+ s.getStringType().string(),
+ s.getHandle(),
+ s.getRequiredPermission().string(),
+ s.getType());
+
+ const int reportingMode = s.getReportingMode();
+ if (reportingMode == AREPORTING_MODE_CONTINUOUS) {
+ result.append(" continuous | ");
+ } else if (reportingMode == AREPORTING_MODE_ON_CHANGE) {
+ result.append(" on-change | ");
+ } else if (reportingMode == AREPORTING_MODE_ONE_SHOT) {
+ result.append(" one-shot | ");
+ } else {
+ result.append(" special-trigger | ");
+ }
- switch (s.getType()) {
- case SENSOR_TYPE_ROTATION_VECTOR:
- case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR:
- result.appendFormat(
- "last=<%5.1f,%5.1f,%5.1f,%5.1f,%5.1f, %" PRId64 ">\n",
- e.data[0], e.data[1], e.data[2], e.data[3], e.data[4], e.timestamp);
- break;
- case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED:
- case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
- result.appendFormat(
- "last=<%5.1f,%5.1f,%5.1f,%5.1f,%5.1f,%5.1f, %" PRId64 ">\n",
- e.data[0], e.data[1], e.data[2], e.data[3], e.data[4], e.data[5],
- e.timestamp);
- break;
- case SENSOR_TYPE_GAME_ROTATION_VECTOR:
- result.appendFormat(
- "last=<%5.1f,%5.1f,%5.1f,%5.1f, %" PRId64 ">\n",
- e.data[0], e.data[1], e.data[2], e.data[3], e.timestamp);
- break;
- case SENSOR_TYPE_SIGNIFICANT_MOTION:
- case SENSOR_TYPE_STEP_DETECTOR:
- result.appendFormat( "last=<%f %" PRId64 ">\n", e.data[0], e.timestamp);
- break;
- case SENSOR_TYPE_STEP_COUNTER:
- result.appendFormat( "last=<%" PRIu64 ", %" PRId64 ">\n", e.u64.step_counter,
- e.timestamp);
- break;
- default:
- // default to 3 values
- result.appendFormat(
- "last=<%5.1f,%5.1f,%5.1f, %" PRId64 ">\n",
- e.data[0], e.data[1], e.data[2], e.timestamp);
- break;
+ if (s.getMaxDelay() > 0) {
+ result.appendFormat("minRate=%.2fHz | ", 1e6f / s.getMaxDelay());
+ } else {
+ result.appendFormat("maxDelay=%dus |", s.getMaxDelay());
+ }
+
+ if (s.getMinDelay() > 0) {
+ result.appendFormat("maxRate=%.2fHz | ", 1e6f / s.getMinDelay());
+ } else {
+ result.appendFormat("minDelay=%dus |", s.getMinDelay());
+ }
+
+ if (s.getFifoMaxEventCount() > 0) {
+ result.appendFormat("FifoMax=%d events | ",
+ s.getFifoMaxEventCount());
+ } else {
+ result.append("no batching | ");
+ }
+
+ if (s.isWakeUpSensor()) {
+ result.appendFormat("wakeUp | ");
+ } else {
+ result.appendFormat("non-wakeUp | ");
+ }
+
+ int bufIndex = mLastEventSeen.indexOfKey(s.getHandle());
+ if (bufIndex >= 0) {
+ const CircularBuffer* buf = mLastEventSeen.valueAt(bufIndex);
+ if (buf != NULL && s.getRequiredPermission().isEmpty()) {
+ buf->printBuffer(result);
+ } else {
+ result.append("last=<> \n");
+ }
+ }
+ result.append("\n");
+ }
+ SensorFusion::getInstance().dump(result);
+ SensorDevice::getInstance().dump(result);
+
+ result.append("Active sensors:\n");
+ for (size_t i=0 ; i<mActiveSensors.size() ; i++) {
+ int handle = mActiveSensors.keyAt(i);
+ result.appendFormat("%s (handle=0x%08x, connections=%zu)\n",
+ getSensorName(handle).string(),
+ handle,
+ mActiveSensors.valueAt(i)->getNumConnections());
}
- result.append("\n");
- }
- SensorFusion::getInstance().dump(result);
- SensorDevice::getInstance().dump(result);
-
- result.append("Active sensors:\n");
- for (size_t i=0 ; i<mActiveSensors.size() ; i++) {
- int handle = mActiveSensors.keyAt(i);
- result.appendFormat("%s (handle=0x%08x, connections=%zu)\n",
- getSensorName(handle).string(),
- handle,
- mActiveSensors.valueAt(i)->getNumConnections());
- }
- result.appendFormat("Socket Buffer size = %d events\n",
- mSocketBufferSize/sizeof(sensors_event_t));
- result.appendFormat("WakeLock Status: %s \n", mWakeLockAcquired ? "acquired" : "not held");
- result.appendFormat("%zd active connections\n", mActiveConnections.size());
+ result.appendFormat("Socket Buffer size = %d events\n",
+ mSocketBufferSize/sizeof(sensors_event_t));
+ result.appendFormat("WakeLock Status: %s \n", mWakeLockAcquired ? "acquired" :
+ "not held");
+ result.appendFormat("Mode :");
+ switch(mCurrentOperatingMode) {
+ case NORMAL:
+ result.appendFormat(" NORMAL\n");
+ break;
+ case RESTRICTED:
+ result.appendFormat(" RESTRICTED : %s\n", mWhiteListedPackage.string());
+ break;
+ case DATA_INJECTION:
+ result.appendFormat(" DATA_INJECTION : %s\n", mWhiteListedPackage.string());
+ }
+ result.appendFormat("%zd active connections\n", mActiveConnections.size());
- for (size_t i=0 ; i < mActiveConnections.size() ; i++) {
- sp<SensorEventConnection> connection(mActiveConnections[i].promote());
- if (connection != 0) {
- result.appendFormat("Connection Number: %zu \n", i);
- connection->dump(result);
+ for (size_t i=0 ; i < mActiveConnections.size() ; i++) {
+ sp<SensorEventConnection> connection(mActiveConnections[i].promote());
+ if (connection != 0) {
+ result.appendFormat("Connection Number: %zu \n", i);
+ connection->dump(result);
+ }
}
+
+ result.appendFormat("Previous Registrations:\n");
+ // Log in the reverse chronological order.
+ int currentIndex = (mNextSensorRegIndex - 1 + SENSOR_REGISTRATIONS_BUF_SIZE) %
+ SENSOR_REGISTRATIONS_BUF_SIZE;
+ const int startIndex = currentIndex;
+ do {
+ const SensorRegistrationInfo& reg_info = mLastNSensorRegistrations[currentIndex];
+ if (SensorRegistrationInfo::isSentinel(reg_info)) {
+ // Ignore sentinel, proceed to next item.
+ currentIndex = (currentIndex - 1 + SENSOR_REGISTRATIONS_BUF_SIZE) %
+ SENSOR_REGISTRATIONS_BUF_SIZE;
+ continue;
+ }
+ if (reg_info.mActivated) {
+ result.appendFormat("%02d:%02d:%02d activated package=%s handle=0x%08x "
+ "samplingRate=%dus maxReportLatency=%dus\n",
+ reg_info.mHour, reg_info.mMin, reg_info.mSec,
+ reg_info.mPackageName.string(), reg_info.mSensorHandle,
+ reg_info.mSamplingRateUs, reg_info.mMaxReportLatencyUs);
+ } else {
+ result.appendFormat("%02d:%02d:%02d de-activated package=%s handle=0x%08x\n",
+ reg_info.mHour, reg_info.mMin, reg_info.mSec,
+ reg_info.mPackageName.string(), reg_info.mSensorHandle);
+ }
+ currentIndex = (currentIndex - 1 + SENSOR_REGISTRATIONS_BUF_SIZE) %
+ SENSOR_REGISTRATIONS_BUF_SIZE;
+ } while(startIndex != currentIndex);
}
}
write(fd, result.string(), result.size());
@@ -371,8 +455,9 @@ void SensorService::cleanupAutoDisabledSensorLocked(const sp<SensorEventConnecti
sensor->autoDisable(connection.get(), handle);
cleanupWithoutDisableLocked(connection, handle);
}
+
}
- }
+ }
}
bool SensorService::threadLoop()
@@ -554,7 +639,6 @@ void SensorService::setWakeLockAcquiredLocked(bool acquire) {
}
}
-
bool SensorService::isWakeLockAcquired() {
Mutex::Autolock _l(mLock);
return mWakeLockAcquired;
@@ -577,19 +661,15 @@ bool SensorService::SensorEventAckReceiver::threadLoop() {
void SensorService::recordLastValueLocked(
const sensors_event_t* buffer, size_t count) {
- const sensors_event_t* last = NULL;
for (size_t i = 0; i < count; i++) {
- const sensors_event_t* event = &buffer[i];
- if (event->type != SENSOR_TYPE_META_DATA) {
- if (last && event->sensor != last->sensor) {
- mLastEventSeen.editValueFor(last->sensor) = *last;
+ if (buffer[i].type != SENSOR_TYPE_META_DATA) {
+ CircularBuffer* &circular_buf = mLastEventSeen.editValueFor(buffer[i].sensor);
+ if (circular_buf == NULL) {
+ circular_buf = new CircularBuffer(buffer[i].type);
}
- last = event;
+ circular_buf->addEvent(buffer[i]);
}
}
- if (last) {
- mLastEventSeen.editValueFor(last->sensor) = *last;
- }
}
void SensorService::sortEventBuffer(sensors_event_t* buffer, size_t count)
@@ -630,12 +710,11 @@ bool SensorService::isWakeUpSensorEvent(const sensors_event_t& event) const {
return sensor != NULL && sensor->getSensor().isWakeUpSensor();
}
-
SensorService::SensorRecord * SensorService::getSensorRecord(int handle) {
return mActiveSensors.valueFor(handle);
}
-Vector<Sensor> SensorService::getSensorList()
+Vector<Sensor> SensorService::getSensorList(const String16& opPackageName)
{
char value[PROPERTY_VALUE_MAX];
property_get("debug.sensors", value, "0");
@@ -644,24 +723,65 @@ Vector<Sensor> SensorService::getSensorList()
Vector<Sensor> accessibleSensorList;
for (size_t i = 0; i < initialSensorList.size(); i++) {
Sensor sensor = initialSensorList[i];
- if (canAccessSensor(sensor)) {
+ if (canAccessSensor(sensor, "getSensorList", opPackageName)) {
accessibleSensorList.add(sensor);
} else {
- ALOGI("Skipped sensor %s because it requires permission %s",
+ ALOGI("Skipped sensor %s because it requires permission %s and app op %d",
sensor.getName().string(),
- sensor.getRequiredPermission().string());
+ sensor.getRequiredPermission().string(),
+ sensor.getRequiredAppOp());
}
}
return accessibleSensorList;
}
-sp<ISensorEventConnection> SensorService::createSensorEventConnection()
-{
+sp<ISensorEventConnection> SensorService::createSensorEventConnection(const String8& packageName,
+ int requestedMode, const String16& opPackageName) {
+ // Only 2 modes supported for a SensorEventConnection ... NORMAL and DATA_INJECTION.
+ if (requestedMode != NORMAL && requestedMode != DATA_INJECTION) {
+ return NULL;
+ }
+
+ Mutex::Autolock _l(mLock);
+ // To create a client in DATA_INJECTION mode to inject data, SensorService should already be
+ // operating in DI mode.
+ if (requestedMode == DATA_INJECTION) {
+ if (mCurrentOperatingMode != DATA_INJECTION) return NULL;
+ if (!isWhiteListedPackage(packageName)) return NULL;
+ }
+
uid_t uid = IPCThreadState::self()->getCallingUid();
- sp<SensorEventConnection> result(new SensorEventConnection(this, uid));
+ sp<SensorEventConnection> result(new SensorEventConnection(this, uid, packageName,
+ requestedMode == DATA_INJECTION, opPackageName));
+ if (requestedMode == DATA_INJECTION) {
+ if (mActiveConnections.indexOf(result) < 0) {
+ mActiveConnections.add(result);
+ }
+ // Add the associated file descriptor to the Looper for polling whenever there is data to
+ // be injected.
+ result->updateLooperRegistration(mLooper);
+ }
return result;
}
+int SensorService::isDataInjectionEnabled() {
+ Mutex::Autolock _l(mLock);
+ return (mCurrentOperatingMode == DATA_INJECTION);
+}
+
+status_t SensorService::resetToNormalMode() {
+ Mutex::Autolock _l(mLock);
+ return resetToNormalModeLocked();
+}
+
+status_t SensorService::resetToNormalModeLocked() {
+ SensorDevice& dev(SensorDevice::getInstance());
+ dev.enableAllSensors();
+ status_t err = dev.setMode(NORMAL);
+ mCurrentOperatingMode = NORMAL;
+ return err;
+}
+
void SensorService::cleanupConnection(SensorEventConnection* c)
{
Mutex::Autolock _l(mLock);
@@ -708,7 +828,8 @@ Sensor SensorService::getSensorFromHandle(int handle) const {
}
status_t SensorService::enable(const sp<SensorEventConnection>& connection,
- int handle, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags)
+ int handle, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags,
+ const String16& opPackageName)
{
if (mInitCheck != NO_ERROR)
return mInitCheck;
@@ -718,11 +839,16 @@ status_t SensorService::enable(const sp<SensorEventConnection>& connection,
return BAD_VALUE;
}
- if (!verifyCanAccessSensor(sensor->getSensor(), "Tried enabling")) {
+ if (!canAccessSensor(sensor->getSensor(), "Tried enabling", opPackageName)) {
return BAD_VALUE;
}
Mutex::Autolock _l(mLock);
+ if ((mCurrentOperatingMode == RESTRICTED || mCurrentOperatingMode == DATA_INJECTION)
+ && !isWhiteListedPackage(connection->getPackageName())) {
+ return INVALID_OPERATION;
+ }
+
SensorRecord* rec = mActiveSensors.valueFor(handle);
if (rec == 0) {
rec = new SensorRecord(connection);
@@ -738,14 +864,24 @@ status_t SensorService::enable(const sp<SensorEventConnection>& connection,
if (sensor->getSensor().getReportingMode() == AREPORTING_MODE_ON_CHANGE) {
// NOTE: The wake_up flag of this event may get set to
// WAKE_UP_SENSOR_EVENT_NEEDS_ACK if this is a wake_up event.
- sensors_event_t& event(mLastEventSeen.editValueFor(handle));
- if (event.version == sizeof(sensors_event_t)) {
- if (isWakeUpSensorEvent(event) && !mWakeLockAcquired) {
- setWakeLockAcquiredLocked(true);
- }
- connection->sendEvents(&event, 1, NULL);
- if (!connection->needsWakeLock() && mWakeLockAcquired) {
- checkWakeLockStateLocked();
+ CircularBuffer *circular_buf = mLastEventSeen.valueFor(handle);
+ if (circular_buf) {
+ sensors_event_t event;
+ memset(&event, 0, sizeof(event));
+ // It is unlikely that this buffer is empty as the sensor is already active.
+ // One possible corner case may be two applications activating an on-change
+ // sensor at the same time.
+ if(circular_buf->populateLastEvent(&event)) {
+ event.sensor = handle;
+ if (event.version == sizeof(sensors_event_t)) {
+ if (isWakeUpSensorEvent(event) && !mWakeLockAcquired) {
+ setWakeLockAcquiredLocked(true);
+ }
+ connection->sendEvents(&event, 1, NULL);
+ if (!connection->needsWakeLock() && mWakeLockAcquired) {
+ checkWakeLockStateLocked();
+ }
+ }
}
}
}
@@ -773,7 +909,7 @@ status_t SensorService::enable(const sp<SensorEventConnection>& connection,
"rate=%" PRId64 " timeout== %" PRId64"",
handle, reservedFlags, samplingPeriodNs, maxBatchReportLatencyNs);
- status_t err = sensor->batch(connection.get(), handle, reservedFlags, samplingPeriodNs,
+ status_t err = sensor->batch(connection.get(), handle, 0, samplingPeriodNs,
maxBatchReportLatencyNs);
// Call flush() before calling activate() on the sensor. Wait for a first flush complete
@@ -798,6 +934,19 @@ status_t SensorService::enable(const sp<SensorEventConnection>& connection,
if (err == NO_ERROR) {
connection->updateLooperRegistration(mLooper);
+ SensorRegistrationInfo &reg_info =
+ mLastNSensorRegistrations.editItemAt(mNextSensorRegIndex);
+ reg_info.mSensorHandle = handle;
+ reg_info.mSamplingRateUs = samplingPeriodNs/1000;
+ reg_info.mMaxReportLatencyUs = maxBatchReportLatencyNs/1000;
+ reg_info.mActivated = true;
+ reg_info.mPackageName = connection->getPackageName();
+ time_t rawtime = time(NULL);
+ struct tm * timeinfo = localtime(&rawtime);
+ reg_info.mHour = timeinfo->tm_hour;
+ reg_info.mMin = timeinfo->tm_min;
+ reg_info.mSec = timeinfo->tm_sec;
+ mNextSensorRegIndex = (mNextSensorRegIndex + 1) % SENSOR_REGISTRATIONS_BUF_SIZE;
}
if (err != NO_ERROR) {
@@ -818,6 +967,20 @@ status_t SensorService::disable(const sp<SensorEventConnection>& connection,
if (err == NO_ERROR) {
SensorInterface* sensor = mSensorMap.valueFor(handle);
err = sensor ? sensor->activate(connection.get(), false) : status_t(BAD_VALUE);
+
+ }
+ if (err == NO_ERROR) {
+ SensorRegistrationInfo &reg_info =
+ mLastNSensorRegistrations.editItemAt(mNextSensorRegIndex);
+ reg_info.mActivated = false;
+ reg_info.mPackageName= connection->getPackageName();
+ reg_info.mSensorHandle = handle;
+ time_t rawtime = time(NULL);
+ struct tm * timeinfo = localtime(&rawtime);
+ reg_info.mHour = timeinfo->tm_hour;
+ reg_info.mMin = timeinfo->tm_min;
+ reg_info.mSec = timeinfo->tm_sec;
+ mNextSensorRegIndex = (mNextSensorRegIndex + 1) % SENSOR_REGISTRATIONS_BUF_SIZE;
}
return err;
}
@@ -852,7 +1015,7 @@ status_t SensorService::cleanupWithoutDisableLocked(
}
status_t SensorService::setEventRate(const sp<SensorEventConnection>& connection,
- int handle, nsecs_t ns)
+ int handle, nsecs_t ns, const String16& opPackageName)
{
if (mInitCheck != NO_ERROR)
return mInitCheck;
@@ -861,7 +1024,7 @@ status_t SensorService::setEventRate(const sp<SensorEventConnection>& connection
if (!sensor)
return BAD_VALUE;
- if (!verifyCanAccessSensor(sensor->getSensor(), "Tried configuring")) {
+ if (!canAccessSensor(sensor->getSensor(), "Tried configuring", opPackageName)) {
return BAD_VALUE;
}
@@ -876,7 +1039,8 @@ status_t SensorService::setEventRate(const sp<SensorEventConnection>& connection
return sensor->setDelay(connection.get(), handle, ns);
}
-status_t SensorService::flushSensor(const sp<SensorEventConnection>& connection) {
+status_t SensorService::flushSensor(const sp<SensorEventConnection>& connection,
+ const String16& opPackageName) {
if (mInitCheck != NO_ERROR) return mInitCheck;
SensorDevice& dev(SensorDevice::getInstance());
const int halVersion = dev.getHalDeviceVersion();
@@ -896,6 +1060,10 @@ status_t SensorService::flushSensor(const sp<SensorEventConnection>& connection)
// flush complete event.
connection->incrementPendingFlushCount(handle);
} else {
+ if (!canAccessSensor(sensor->getSensor(), "Tried flushing", opPackageName)) {
+ err = INVALID_OPERATION;
+ continue;
+ }
status_t err_flush = sensor->flush(connection.get(), handle);
if (err_flush == NO_ERROR) {
SensorRecord* rec = mActiveSensors.valueFor(handle);
@@ -907,23 +1075,42 @@ status_t SensorService::flushSensor(const sp<SensorEventConnection>& connection)
return err;
}
-bool SensorService::canAccessSensor(const Sensor& sensor) {
- return (sensor.getRequiredPermission().isEmpty()) ||
- PermissionCache::checkCallingPermission(String16(sensor.getRequiredPermission()));
-}
+bool SensorService::canAccessSensor(const Sensor& sensor, const char* operation,
+ const String16& opPackageName) {
+ const String8& requiredPermission = sensor.getRequiredPermission();
-bool SensorService::verifyCanAccessSensor(const Sensor& sensor, const char* operation) {
- if (canAccessSensor(sensor)) {
+ if (requiredPermission.length() <= 0) {
return true;
+ }
+
+ bool hasPermission = false;
+
+ // Runtime permissions can't use the cache as they may change.
+ if (sensor.isRequiredPermissionRuntime()) {
+ hasPermission = checkPermission(String16(requiredPermission),
+ IPCThreadState::self()->getCallingPid(), IPCThreadState::self()->getCallingUid());
} else {
- String8 errorMessage;
- errorMessage.appendFormat(
- "%s a sensor (%s) without holding its required permission: %s",
- operation,
- sensor.getName().string(),
- sensor.getRequiredPermission().string());
+ hasPermission = PermissionCache::checkCallingPermission(String16(requiredPermission));
+ }
+
+ if (!hasPermission) {
+ ALOGE("%s a sensor (%s) without holding its required permission: %s",
+ operation, sensor.getName().string(), sensor.getRequiredPermission().string());
return false;
}
+
+ const int32_t opCode = sensor.getRequiredAppOp();
+ if (opCode >= 0) {
+ AppOpsManager appOps;
+ if (appOps.noteOp(opCode, IPCThreadState::self()->getCallingUid(), opPackageName)
+ != AppOpsManager::MODE_ALLOWED) {
+ ALOGE("%s a sensor (%s) without enabled required app op: %D",
+ operation, sensor.getName().string(), opCode);
+ return false;
+ }
+ }
+
+ return true;
}
void SensorService::checkWakeLockState() {
@@ -969,6 +1156,33 @@ void SensorService::populateActiveConnections(
}
}
+bool SensorService::isWhiteListedPackage(const String8& packageName) {
+ return (packageName.contains(mWhiteListedPackage.string()));
+}
+
+int SensorService::getNumEventsForSensorType(int sensor_event_type) {
+ switch (sensor_event_type) {
+ case SENSOR_TYPE_ROTATION_VECTOR:
+ case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR:
+ return 5;
+
+ case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED:
+ case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
+ return 6;
+
+ case SENSOR_TYPE_GAME_ROTATION_VECTOR:
+ return 4;
+
+ case SENSOR_TYPE_SIGNIFICANT_MOTION:
+ case SENSOR_TYPE_STEP_DETECTOR:
+ case SENSOR_TYPE_STEP_COUNTER:
+ return 1;
+
+ default:
+ return 3;
+ }
+}
+
// ---------------------------------------------------------------------------
SensorService::SensorRecord::SensorRecord(
const sp<SensorEventConnection>& connection)
@@ -1025,12 +1239,121 @@ SensorService::SensorRecord::getFirstPendingFlushConnection() {
return NULL;
}
+void SensorService::SensorRecord::clearAllPendingFlushConnections() {
+ mPendingFlushConnections.clear();
+}
+
+
+// ---------------------------------------------------------------------------
+SensorService::TrimmedSensorEvent::TrimmedSensorEvent(int sensorType) {
+ mTimestamp = -1;
+ const int numData = SensorService::getNumEventsForSensorType(sensorType);
+ if (sensorType == SENSOR_TYPE_STEP_COUNTER) {
+ mStepCounter = 0;
+ } else {
+ mData = new float[numData];
+ for (int i = 0; i < numData; ++i) {
+ mData[i] = -1.0;
+ }
+ }
+ mHour = mMin = mSec = INT32_MIN;
+}
+
+bool SensorService::TrimmedSensorEvent::isSentinel(const TrimmedSensorEvent& event) {
+ return (event.mHour == INT32_MIN && event.mMin == INT32_MIN && event.mSec == INT32_MIN);
+}
+// --------------------------------------------------------------------------
+SensorService::CircularBuffer::CircularBuffer(int sensor_event_type) {
+ mNextInd = 0;
+ mBufSize = CIRCULAR_BUF_SIZE;
+ if (sensor_event_type == SENSOR_TYPE_STEP_COUNTER ||
+ sensor_event_type == SENSOR_TYPE_SIGNIFICANT_MOTION ||
+ sensor_event_type == SENSOR_TYPE_ACCELEROMETER) {
+ mBufSize = CIRCULAR_BUF_SIZE * 5;
+ }
+ mTrimmedSensorEventArr = new TrimmedSensorEvent *[mBufSize];
+ mSensorType = sensor_event_type;
+ for (int i = 0; i < mBufSize; ++i) {
+ mTrimmedSensorEventArr[i] = new TrimmedSensorEvent(mSensorType);
+ }
+}
+
+void SensorService::CircularBuffer::addEvent(const sensors_event_t& sensor_event) {
+ TrimmedSensorEvent *curr_event = mTrimmedSensorEventArr[mNextInd];
+ curr_event->mTimestamp = sensor_event.timestamp;
+ if (mSensorType == SENSOR_TYPE_STEP_COUNTER) {
+ curr_event->mStepCounter = sensor_event.u64.step_counter;
+ } else {
+ memcpy(curr_event->mData, sensor_event.data,
+ sizeof(float) * SensorService::getNumEventsForSensorType(mSensorType));
+ }
+ time_t rawtime = time(NULL);
+ struct tm * timeinfo = localtime(&rawtime);
+ curr_event->mHour = timeinfo->tm_hour;
+ curr_event->mMin = timeinfo->tm_min;
+ curr_event->mSec = timeinfo->tm_sec;
+ mNextInd = (mNextInd + 1) % mBufSize;
+}
+
+void SensorService::CircularBuffer::printBuffer(String8& result) const {
+ const int numData = SensorService::getNumEventsForSensorType(mSensorType);
+ int i = mNextInd, eventNum = 1;
+ result.appendFormat("last %d events = < ", mBufSize);
+ do {
+ if (TrimmedSensorEvent::isSentinel(*mTrimmedSensorEventArr[i])) {
+ // Sentinel, ignore.
+ i = (i + 1) % mBufSize;
+ continue;
+ }
+ result.appendFormat("%d) ", eventNum++);
+ if (mSensorType == SENSOR_TYPE_STEP_COUNTER) {
+ result.appendFormat("%llu,", mTrimmedSensorEventArr[i]->mStepCounter);
+ } else {
+ for (int j = 0; j < numData; ++j) {
+ result.appendFormat("%5.1f,", mTrimmedSensorEventArr[i]->mData[j]);
+ }
+ }
+ result.appendFormat("%lld %02d:%02d:%02d ", mTrimmedSensorEventArr[i]->mTimestamp,
+ mTrimmedSensorEventArr[i]->mHour, mTrimmedSensorEventArr[i]->mMin,
+ mTrimmedSensorEventArr[i]->mSec);
+ i = (i + 1) % mBufSize;
+ } while (i != mNextInd);
+ result.appendFormat(">\n");
+}
+
+bool SensorService::CircularBuffer::populateLastEvent(sensors_event_t *event) {
+ int lastEventInd = (mNextInd - 1 + mBufSize) % mBufSize;
+ // Check if the buffer is empty.
+ if (TrimmedSensorEvent::isSentinel(*mTrimmedSensorEventArr[lastEventInd])) {
+ return false;
+ }
+ event->version = sizeof(sensors_event_t);
+ event->type = mSensorType;
+ event->timestamp = mTrimmedSensorEventArr[lastEventInd]->mTimestamp;
+ if (mSensorType == SENSOR_TYPE_STEP_COUNTER) {
+ event->u64.step_counter = mTrimmedSensorEventArr[lastEventInd]->mStepCounter;
+ } else {
+ memcpy(event->data, mTrimmedSensorEventArr[lastEventInd]->mData,
+ sizeof(float) * SensorService::getNumEventsForSensorType(mSensorType));
+ }
+ return true;
+}
+
+SensorService::CircularBuffer::~CircularBuffer() {
+ for (int i = 0; i < mBufSize; ++i) {
+ delete mTrimmedSensorEventArr[i];
+ }
+ delete [] mTrimmedSensorEventArr;
+}
+
// ---------------------------------------------------------------------------
SensorService::SensorEventConnection::SensorEventConnection(
- const sp<SensorService>& service, uid_t uid)
+ const sp<SensorService>& service, uid_t uid, String8 packageName, bool isDataInjectionMode,
+ const String16& opPackageName)
: mService(service), mUid(uid), mWakeLockRefCount(0), mHasLooperCallbacks(false),
- mDead(false), mEventCache(NULL), mCacheSize(0), mMaxCacheSize(0) {
+ mDead(false), mDataInjectionMode(isDataInjectionMode), mEventCache(NULL),
+ mCacheSize(0), mMaxCacheSize(0), mPackageName(packageName), mOpPackageName(opPackageName) {
mChannel = new BitTube(mService->mSocketBufferSize);
#if DEBUG_CONNECTIONS
mEventsReceived = mEventsSentFromCache = mEventsSent = 0;
@@ -1062,8 +1385,10 @@ void SensorService::SensorEventConnection::resetWakeLockRefCount() {
void SensorService::SensorEventConnection::dump(String8& result) {
Mutex::Autolock _l(mConnectionLock);
- result.appendFormat("\t WakeLockRefCount %d | uid %d | cache size %d | max cache size %d\n",
- mWakeLockRefCount, mUid, mCacheSize, mMaxCacheSize);
+ result.appendFormat("\tOperating Mode: %s\n",mDataInjectionMode ? "DATA_INJECTION" : "NORMAL");
+ result.appendFormat("\t %s | WakeLockRefCount %d | uid %d | cache size %d | "
+ "max cache size %d\n", mPackageName.string(), mWakeLockRefCount, mUid, mCacheSize,
+ mMaxCacheSize);
for (size_t i = 0; i < mSensorInfo.size(); ++i) {
const FlushInfo& flushInfo = mSensorInfo.valueAt(i);
result.appendFormat("\t %s 0x%08x | status: %s | pending flush events %d \n",
@@ -1087,7 +1412,8 @@ void SensorService::SensorEventConnection::dump(String8& result) {
bool SensorService::SensorEventConnection::addSensor(int32_t handle) {
Mutex::Autolock _l(mConnectionLock);
- if (!verifyCanAccessSensor(mService->getSensorFromHandle(handle), "Tried adding")) {
+ if (!canAccessSensor(mService->getSensorFromHandle(handle),
+ "Tried adding", mOpPackageName)) {
return false;
}
if (mSensorInfo.indexOfKey(handle) < 0) {
@@ -1126,6 +1452,10 @@ bool SensorService::SensorEventConnection::hasOneShotSensors() const {
return false;
}
+String8 SensorService::SensorEventConnection::getPackageName() const {
+ return mPackageName;
+}
+
void SensorService::SensorEventConnection::setFirstFlushPending(int32_t handle,
bool value) {
Mutex::Autolock _l(mConnectionLock);
@@ -1143,7 +1473,8 @@ void SensorService::SensorEventConnection::updateLooperRegistration(const sp<Loo
void SensorService::SensorEventConnection::updateLooperRegistrationLocked(
const sp<Looper>& looper) {
- bool isConnectionActive = mSensorInfo.size() > 0;
+ bool isConnectionActive = (mSensorInfo.size() > 0 && !mDataInjectionMode) ||
+ mDataInjectionMode;
// If all sensors are unregistered OR Looper has encountered an error, we
// can remove the Fd from the Looper if it has been previously added.
if (!isConnectionActive || mDead) {
@@ -1157,6 +1488,7 @@ void SensorService::SensorEventConnection::updateLooperRegistrationLocked(
int looper_flags = 0;
if (mCacheSize > 0) looper_flags |= ALOOPER_EVENT_OUTPUT;
+ if (mDataInjectionMode) looper_flags |= ALOOPER_EVENT_INPUT;
for (size_t i = 0; i < mSensorInfo.size(); ++i) {
const int handle = mSensorInfo.keyAt(i);
if (mService->getSensorFromHandle(handle).isWakeUpSensor()) {
@@ -1200,7 +1532,7 @@ status_t SensorService::SensorEventConnection::sendEvents(
sensors_event_t* scratch,
SensorEventConnection const * const * mapFlushEventsToConnections) {
// filter out events not for this connection
- size_t count = 0;
+ int count = 0;
Mutex::Autolock _l(mConnectionLock);
if (scratch) {
size_t i=0;
@@ -1492,7 +1824,7 @@ status_t SensorService::SensorEventConnection::enableDisable(
status_t err;
if (enabled) {
err = mService->enable(this, handle, samplingPeriodNs, maxBatchReportLatencyNs,
- reservedFlags);
+ reservedFlags, mOpPackageName);
} else {
err = mService->disable(this, handle);
@@ -1503,11 +1835,11 @@ status_t SensorService::SensorEventConnection::enableDisable(
status_t SensorService::SensorEventConnection::setEventRate(
int handle, nsecs_t samplingPeriodNs)
{
- return mService->setEventRate(this, handle, samplingPeriodNs);
+ return mService->setEventRate(this, handle, samplingPeriodNs, mOpPackageName);
}
status_t SensorService::SensorEventConnection::flush() {
- return mService->flushSensor(this);
+ return mService->flushSensor(this, mOpPackageName);
}
int SensorService::SensorEventConnection::handleEvent(int fd, int events, void* /*data*/) {
@@ -1523,26 +1855,55 @@ int SensorService::SensorEventConnection::handleEvent(int fd, int events, void*
updateLooperRegistrationLocked(mService->getLooper());
}
mService->checkWakeLockState();
+ if (mDataInjectionMode) {
+ // If the Looper has encountered some error in data injection mode, reset SensorService
+ // back to normal mode.
+ mService->resetToNormalMode();
+ mDataInjectionMode = false;
+ }
return 1;
}
if (events & ALOOPER_EVENT_INPUT) {
- uint32_t numAcks = 0;
- ssize_t ret = ::recv(fd, &numAcks, sizeof(numAcks), MSG_DONTWAIT);
+ unsigned char buf[sizeof(sensors_event_t)];
+ ssize_t numBytesRead = ::recv(fd, buf, sizeof(buf), MSG_DONTWAIT);
{
Mutex::Autolock _l(mConnectionLock);
- // Sanity check to ensure there are no read errors in recv, numAcks is always
- // within the range and not zero. If any of the above don't hold reset mWakeLockRefCount
- // to zero.
- if (ret != sizeof(numAcks) || numAcks > mWakeLockRefCount || numAcks == 0) {
- ALOGE("Looper read error ret=%d numAcks=%d", ret, numAcks);
- mWakeLockRefCount = 0;
- } else {
- mWakeLockRefCount -= numAcks;
- }
+ if (numBytesRead == sizeof(sensors_event_t)) {
+ if (!mDataInjectionMode) {
+ ALOGE("Data injected in normal mode, dropping event"
+ "package=%s uid=%d", mPackageName.string(), mUid);
+ // Unregister call backs.
+ return 0;
+ }
+ SensorDevice& dev(SensorDevice::getInstance());
+ sensors_event_t sensor_event;
+ memset(&sensor_event, 0, sizeof(sensor_event));
+ memcpy(&sensor_event, buf, sizeof(sensors_event_t));
+ Sensor sensor = mService->getSensorFromHandle(sensor_event.sensor);
+ sensor_event.type = sensor.getType();
+ dev.injectSensorData(&sensor_event);
#if DEBUG_CONNECTIONS
- mTotalAcksReceived += numAcks;
+ ++mEventsReceived;
#endif
+ } else if (numBytesRead == sizeof(uint32_t)) {
+ uint32_t numAcks = 0;
+ memcpy(&numAcks, buf, numBytesRead);
+ // Sanity check to ensure there are no read errors in recv, numAcks is always
+ // within the range and not zero. If any of the above don't hold reset
+ // mWakeLockRefCount to zero.
+ if (numAcks > 0 && numAcks < mWakeLockRefCount) {
+ mWakeLockRefCount -= numAcks;
+ } else {
+ mWakeLockRefCount = 0;
+ }
+#if DEBUG_CONNECTIONS
+ mTotalAcksReceived += numAcks;
+#endif
+ } else {
+ // Read error, reset wakelock refcount.
+ mWakeLockRefCount = 0;
+ }
}
// Check if wakelock can be released by sensorservice. mConnectionLock needs to be released
// here as checkWakeLockState() will need it.
@@ -1561,8 +1922,8 @@ int SensorService::SensorEventConnection::handleEvent(int fd, int events, void*
}
int SensorService::SensorEventConnection::computeMaxCacheSizeLocked() const {
- int fifoWakeUpSensors = 0;
- int fifoNonWakeUpSensors = 0;
+ size_t fifoWakeUpSensors = 0;
+ size_t fifoNonWakeUpSensors = 0;
for (size_t i = 0; i < mSensorInfo.size(); ++i) {
const Sensor& sensor = mService->getSensorFromHandle(mSensorInfo.keyAt(i));
if (sensor.getFifoReservedEventCount() == sensor.getFifoMaxEventCount()) {
generated by cgit v1.1 at 2024-05-30 10:32:49 +0000