mResolution = hwSensor->resolution;
mPower = hwSensor->power;
mMinDelay = hwSensor->minDelay;
+
// Set fifo event count zero for older devices which do not support batching. Fused
// sensors also have their fifo counts set to zero.
if (halVersion >= SENSORS_DEVICE_API_VERSION_1_1) {
mFifoReservedEventCount = hwSensor->fifoReservedEventCount;
mFifoMaxEventCount = hwSensor->fifoMaxEventCount;
- } else {
- mFifoReservedEventCount = 0;
- mFifoMaxEventCount = 0;
+ }
+
+ // Ensure existing sensors have correct string type and required
+ // permissions.
+ switch (mType) {
+ case SENSOR_TYPE_ACCELEROMETER:
+ mStringType = SENSOR_STRING_TYPE_ACCELEROMETER;
+ break;
+ case SENSOR_TYPE_AMBIENT_TEMPERATURE:
+ mStringType = SENSOR_STRING_TYPE_AMBIENT_TEMPERATURE;
+ break;
+ case SENSOR_TYPE_GAME_ROTATION_VECTOR:
+ mStringType = SENSOR_STRING_TYPE_GAME_ROTATION_VECTOR;
+ break;
+ case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR:
+ mStringType = SENSOR_STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR;
+ break;
+ case SENSOR_TYPE_GRAVITY:
+ mStringType = SENSOR_STRING_TYPE_GRAVITY;
+ break;
+ case SENSOR_TYPE_GYROSCOPE:
+ mStringType = SENSOR_STRING_TYPE_GYROSCOPE;
+ break;
+ case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
+ mStringType = SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED;
+ break;
+ case SENSOR_TYPE_HEART_RATE:
+ mStringType = SENSOR_STRING_TYPE_HEART_RATE;
+ mRequiredPermission = SENSOR_PERMISSION_BODY_SENSORS;
+ break;
+ case SENSOR_TYPE_LIGHT:
+ mStringType = SENSOR_STRING_TYPE_LIGHT;
+ break;
+ case SENSOR_TYPE_LINEAR_ACCELERATION:
+ mStringType = SENSOR_STRING_TYPE_LINEAR_ACCELERATION;
+ break;
+ case SENSOR_TYPE_MAGNETIC_FIELD:
+ mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD;
+ break;
+ case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED:
+ mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD_UNCALIBRATED;
+ break;
+ case SENSOR_TYPE_ORIENTATION:
+ mStringType = SENSOR_STRING_TYPE_ORIENTATION;
+ break;
+ case SENSOR_TYPE_PRESSURE:
+ mStringType = SENSOR_STRING_TYPE_PRESSURE;
+ break;
+ case SENSOR_TYPE_PROXIMITY:
+ mStringType = SENSOR_STRING_TYPE_PROXIMITY;
+ break;
+ case SENSOR_TYPE_RELATIVE_HUMIDITY:
+ mStringType = SENSOR_STRING_TYPE_RELATIVE_HUMIDITY;
+ break;
+ case SENSOR_TYPE_ROTATION_VECTOR:
+ mStringType = SENSOR_STRING_TYPE_ROTATION_VECTOR;
+ break;
+ case SENSOR_TYPE_SIGNIFICANT_MOTION:
+ mStringType = SENSOR_STRING_TYPE_SIGNIFICANT_MOTION;
+ break;
+ case SENSOR_TYPE_STEP_COUNTER:
+ mStringType = SENSOR_STRING_TYPE_STEP_COUNTER;
+ break;
+ case SENSOR_TYPE_STEP_DETECTOR:
+ mStringType = SENSOR_STRING_TYPE_STEP_DETECTOR;
+ break;
+ case SENSOR_TYPE_TEMPERATURE:
+ mStringType = SENSOR_STRING_TYPE_TEMPERATURE;
+ break;
+ default:
+ // Only pipe the stringType and requiredPermission for custom sensors.
+ if (halVersion >= SENSORS_DEVICE_API_VERSION_1_2 && hwSensor->stringType) {
+ mStringType = hwSensor->stringType;
+ }
+ if (halVersion >= SENSORS_DEVICE_API_VERSION_1_2 && hwSensor->requiredPermission) {
+ mRequiredPermission = hwSensor->requiredPermission;
+ }
+ break;
}
}
return mFifoMaxEventCount;
}
+const String8& Sensor::getStringType() const {
+ return mStringType;
+}
+
+const String8& Sensor::getRequiredPermission() const {
+ return mRequiredPermission;
+}
+
size_t Sensor::getFlattenedSize() const
{
size_t fixedSize =
sizeof(int32_t) * 3;
size_t variableSize =
- sizeof(int32_t) + FlattenableUtils::align<4>(mName.length()) +
- sizeof(int32_t) + FlattenableUtils::align<4>(mVendor.length());
+ sizeof(uint32_t) + FlattenableUtils::align<4>(mName.length()) +
+ sizeof(uint32_t) + FlattenableUtils::align<4>(mVendor.length()) +
+ sizeof(uint32_t) + FlattenableUtils::align<4>(mStringType.length()) +
+ sizeof(uint32_t) + FlattenableUtils::align<4>(mRequiredPermission.length());
return fixedSize + variableSize;
}
return NO_MEMORY;
}
- FlattenableUtils::write(buffer, size, mName.length());
- memcpy(static_cast<char*>(buffer), mName.string(), mName.length());
- FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(mName.length()));
-
- FlattenableUtils::write(buffer, size, mVendor.length());
- memcpy(static_cast<char*>(buffer), mVendor.string(), mVendor.length());
- FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(mVendor.length()));
-
+ flattenString8(buffer, size, mName);
+ flattenString8(buffer, size, mVendor);
FlattenableUtils::write(buffer, size, mVersion);
FlattenableUtils::write(buffer, size, mHandle);
FlattenableUtils::write(buffer, size, mType);
FlattenableUtils::write(buffer, size, mMinDelay);
FlattenableUtils::write(buffer, size, mFifoReservedEventCount);
FlattenableUtils::write(buffer, size, mFifoMaxEventCount);
+ flattenString8(buffer, size, mStringType);
+ flattenString8(buffer, size, mRequiredPermission);
return NO_ERROR;
}
status_t Sensor::unflatten(void const* buffer, size_t size) {
- size_t len;
-
- if (size < sizeof(size_t)) {
- return NO_MEMORY;
- }
- FlattenableUtils::read(buffer, size, len);
- if (size < len) {
- return NO_MEMORY;
- }
- mName.setTo(static_cast<char const*>(buffer), len);
- FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
-
-
- if (size < sizeof(size_t)) {
+ if (!unflattenString8(buffer, size, mName)) {
return NO_MEMORY;
}
- FlattenableUtils::read(buffer, size, len);
- if (size < len) {
+ if (!unflattenString8(buffer, size, mVendor)) {
return NO_MEMORY;
}
- mVendor.setTo(static_cast<char const*>(buffer), len);
- FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
size_t fixedSize =
sizeof(int32_t) * 3 +
sizeof(float) * 4 +
sizeof(int32_t) * 3;
-
if (size < fixedSize) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, mMinDelay);
FlattenableUtils::read(buffer, size, mFifoReservedEventCount);
FlattenableUtils::read(buffer, size, mFifoMaxEventCount);
+
+ if (!unflattenString8(buffer, size, mStringType)) {
+ return NO_MEMORY;
+ }
+ if (!unflattenString8(buffer, size, mRequiredPermission)) {
+ return NO_MEMORY;
+ }
return NO_ERROR;
}
+void Sensor::flattenString8(void*& buffer, size_t& size,
+ const String8& string8) {
+ uint32_t len = string8.length();
+ FlattenableUtils::write(buffer, size, len);
+ memcpy(static_cast<char*>(buffer), string8.string(), len);
+ FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
+}
+
+bool Sensor::unflattenString8(void const*& buffer, size_t& size, String8& outputString8) {
+ uint32_t len;
+ if (size < sizeof(len)) {
+ return false;
+ }
+ FlattenableUtils::read(buffer, size, len);
+ if (size < len) {
+ return false;
+ }
+ outputString8.setTo(static_cast<char const*>(buffer), len);
+ FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
+ return true;
+}
+
// ----------------------------------------------------------------------------
}; // namespace android
String8 result;
if (!PermissionCache::checkCallingPermission(sDump)) {
result.appendFormat("Permission Denial: "
- "can't dump SurfaceFlinger from pid=%d, uid=%d\n",
+ "can't dump SensorService from pid=%d, uid=%d\n",
IPCThreadState::self()->getCallingPid(),
IPCThreadState::self()->getCallingUid());
} else {
const Sensor& s(mSensorList[i]);
const sensors_event_t& e(mLastEventSeen.valueFor(s.getHandle()));
result.appendFormat(
- "%-48s| %-32s | 0x%08x | ",
+ "%-48s| %-32s| %-48s| 0x%08x | \"%s\"\n\t",
s.getName().string(),
s.getVendor().string(),
- s.getHandle());
+ s.getStringType().string(),
+ s.getHandle(),
+ s.getRequiredPermission().string());
if (s.getMinDelay() > 0) {
result.appendFormat(
- "maxRate=%7.2fHz | ", 1e6f / s.getMinDelay());
+ "maxRate=%7.2fHz | ", 1e6f / s.getMinDelay());
} else {
result.append(s.getMinDelay() == 0
? "on-demand | "
: "one-shot | ");
}
if (s.getFifoMaxEventCount() > 0) {
- result.appendFormat("getFifoMaxEventCount=%d events | ", s.getFifoMaxEventCount());
+ result.appendFormat("FifoMax=%d events | ",
+ s.getFifoMaxEventCount());
} else {
result.append("no batching support | ");
}
{
char value[PROPERTY_VALUE_MAX];
property_get("debug.sensors", value, "0");
- if (atoi(value)) {
- return mUserSensorListDebug;
+ const Vector<Sensor>& initialSensorList = (atoi(value)) ?
+ mUserSensorListDebug : mUserSensorList;
+ Vector<Sensor> accessibleSensorList;
+ for (size_t i = 0; i < initialSensorList.size(); i++) {
+ Sensor sensor = initialSensorList[i];
+ if (canAccessSensor(sensor)) {
+ accessibleSensorList.add(sensor);
+ } else {
+ String8 infoMessage;
+ infoMessage.appendFormat(
+ "Skipped sensor %s because it requires permission %s",
+ sensor.getName().string(),
+ sensor.getRequiredPermission().string());
+ ALOGI(infoMessage.string());
+ }
}
- return mUserSensorList;
+ return accessibleSensorList;
}
sp<ISensorEventConnection> SensorService::createSensorEventConnection()
BatteryService::cleanup(c->getUid());
}
+Sensor SensorService::getSensorFromHandle(int handle) const {
+ return mSensorMap.valueFor(handle)->getSensor();
+}
+
status_t SensorService::enable(const sp<SensorEventConnection>& connection,
int handle, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags)
{
if (sensor == NULL) {
return BAD_VALUE;
}
+
+ if (!verifyCanAccessSensor(sensor->getSensor(), "Tried enabling")) {
+ return BAD_VALUE;
+ }
+
Mutex::Autolock _l(mLock);
SensorRecord* rec = mActiveSensors.valueFor(handle);
if (rec == 0) {
if (!sensor)
return BAD_VALUE;
+ if (!verifyCanAccessSensor(sensor->getSensor(), "Tried configuring")) {
+ return BAD_VALUE;
+ }
+
if (ns < 0)
return BAD_VALUE;
status_t SensorService::flushSensor(const sp<SensorEventConnection>& connection,
int handle) {
- if (mInitCheck != NO_ERROR) return mInitCheck;
- SensorInterface* sensor = mSensorMap.valueFor(handle);
- if (sensor == NULL) {
- return BAD_VALUE;
- }
- if (sensor->getSensor().getType() == SENSOR_TYPE_SIGNIFICANT_MOTION) {
- ALOGE("flush called on Significant Motion sensor");
- return INVALID_OPERATION;
- }
- return sensor->flush(connection.get(), handle);
+ if (mInitCheck != NO_ERROR) return mInitCheck;
+ SensorInterface* sensor = mSensorMap.valueFor(handle);
+ if (sensor == NULL) {
+ return BAD_VALUE;
+ }
+
+ if (!verifyCanAccessSensor(sensor->getSensor(), "Tried flushing")) {
+ return BAD_VALUE;
+ }
+
+ if (sensor->getSensor().getType() == SENSOR_TYPE_SIGNIFICANT_MOTION) {
+ ALOGE("flush called on Significant Motion sensor");
+ return INVALID_OPERATION;
+ }
+ return sensor->flush(connection.get(), handle);
+}
+
+
+bool SensorService::canAccessSensor(const Sensor& sensor) {
+ String16 permissionString(sensor.getRequiredPermission());
+ return permissionString.size() == 0 ||
+ PermissionCache::checkCallingPermission(permissionString);
}
+
+bool SensorService::verifyCanAccessSensor(const Sensor& sensor, const char* operation) {
+ if (canAccessSensor(sensor)) {
+ return true;
+ } else {
+ String8 errorMessage;
+ errorMessage.appendFormat(
+ "%s a sensor (%s) without holding its required permission: %s",
+ operation,
+ sensor.getName().string(),
+ sensor.getRequiredPermission().string());
+ return false;
+ }
+}
+
// ---------------------------------------------------------------------------
SensorService::SensorRecord::SensorRecord(
bool SensorService::SensorEventConnection::addSensor(int32_t handle) {
Mutex::Autolock _l(mConnectionLock);
+ if (!verifyCanAccessSensor(mService->getSensorFromHandle(handle), "Tried adding")) {
+ return false;
+ }
if (mSensorInfo.indexOfKey(handle) < 0) {
mSensorInfo.add(handle, FlushInfo());
return true;
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