Log BiometricPropertiesCollected atom (c9c800c6) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/BinaryTransparencyService.java

+151 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,13 @@ import android.content.pm.SigningInfo;
		import android.content.pm.parsing.result.ParseInput;
		import android.content.pm.parsing.result.ParseResult;
		import android.content.pm.parsing.result.ParseTypeImpl;
		import android.hardware.biometrics.SensorProperties;
		import android.hardware.biometrics.SensorProperties.ComponentInfo;
		import android.hardware.face.FaceManager;
		import android.hardware.face.FaceSensorProperties;
		import android.hardware.fingerprint.FingerprintManager;
		import android.hardware.fingerprint.FingerprintSensorProperties;
		import android.hardware.fingerprint.FingerprintSensorPropertiesInternal;
		import android.os.Binder;
		import android.os.Build;
		import android.os.Bundle;
		@@ -1111,6 +1118,15 @@ public class BinaryTransparencyService extends SystemService {
		Slog.i(TAG, "Boot completed. Getting VBMeta Digest.");
		getVBMetaDigestInformation();

		// Log to statsd
		// TODO(b/264061957): For now, biometric system properties are always collected if users
		// share usage & diagnostics information. In the future, collect biometric system
		// properties only when transparency log verification of the target partitions fails
		// (e.g. when the system/vendor partitions have been changed) once the binary
		// transparency infrastructure is ready.
		Slog.i(TAG, "Boot completed. Collecting biometric system properties.");
		collectBiometricProperties();

		// to avoid the risk of holding up boot time, computations to measure APEX, Module, and
		// MBA digests are scheduled here, but only executed when the device is idle and plugged
		// in.
		@@ -1207,6 +1223,141 @@ public class BinaryTransparencyService extends SystemService {
		}
		}

		/**
		* Convert a {@link FingerprintSensorProperties} sensor type to the corresponding enum to be
		* logged.
		*
		* @param sensorType See {@link FingerprintSensorProperties}
		* @return The enum to be logged
		*/
		private int toFingerprintSensorType(@FingerprintSensorProperties.SensorType int sensorType) {
		switch (sensorType) {
		case FingerprintSensorProperties.TYPE_REAR:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FP_REAR;
		case FingerprintSensorProperties.TYPE_UDFPS_ULTRASONIC:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FP_UDFPS_ULTRASONIC;
		case FingerprintSensorProperties.TYPE_UDFPS_OPTICAL:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FP_UDFPS_OPTICAL;
		case FingerprintSensorProperties.TYPE_POWER_BUTTON:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FP_POWER_BUTTON;
		case FingerprintSensorProperties.TYPE_HOME_BUTTON:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FP_HOME_BUTTON;
		default:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_UNKNOWN;
		}
		}

		/**
		* Convert a {@link FaceSensorProperties} sensor type to the corresponding enum to be logged.
		*
		* @param sensorType See {@link FaceSensorProperties}
		* @return The enum to be logged
		*/
		private int toFaceSensorType(@FaceSensorProperties.SensorType int sensorType) {
		switch (sensorType) {
		case FaceSensorProperties.TYPE_RGB:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FACE_RGB;
		case FaceSensorProperties.TYPE_IR:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_FACE_IR;
		default:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_TYPE__SENSOR_UNKNOWN;
		}
		}

		/**
		* Convert a {@link SensorProperties} sensor strength to the corresponding enum to be logged.
		*
		* @param sensorStrength See {@link SensorProperties}
		* @return The enum to be logged
		*/
		private int toSensorStrength(@SensorProperties.Strength int sensorStrength) {
		switch (sensorStrength) {
		case SensorProperties.STRENGTH_CONVENIENCE:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_STRENGTH__STRENGTH_CONVENIENCE;
		case SensorProperties.STRENGTH_WEAK:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_STRENGTH__STRENGTH_WEAK;
		case SensorProperties.STRENGTH_STRONG:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_STRENGTH__STRENGTH_STRONG;
		default:
		return FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__SENSOR_STRENGTH__STRENGTH_UNKNOWN;
		}
		}

		/**
		* A helper function to log detailed biometric sensor properties to statsd.
		*
		* @param prop The biometric sensor properties to be logged
		* @param modality The modality of the biometric (e.g. fingerprint, face) to be logged
		* @param sensorType The specific type of the biometric to be logged
		*/
		private void logBiometricProperties(SensorProperties prop, int modality, int sensorType) {
		final int sensorId = prop.getSensorId();
		final int sensorStrength = toSensorStrength(prop.getSensorStrength());

		// Log data for each component
		// Note: none of the component info is a device identifier since every device of a given
		// model and build share the same biometric system info (see b/216195167)
		for (ComponentInfo componentInfo : prop.getComponentInfo()) {
		FrameworkStatsLog.write(FrameworkStatsLog.BIOMETRIC_PROPERTIES_COLLECTED,
		sensorId,
		modality,
		sensorType,
		sensorStrength,
		componentInfo.getComponentId().trim(),
		componentInfo.getHardwareVersion().trim(),
		componentInfo.getFirmwareVersion().trim(),
		componentInfo.getSerialNumber().trim(),
		componentInfo.getSoftwareVersion().trim());
		}
		}

		private void collectBiometricProperties() {
		PackageManager pm = mContext.getPackageManager();
		FingerprintManager fpManager = null;
		FaceManager faceManager = null;
		if (pm != null && pm.hasSystemFeature(PackageManager.FEATURE_FINGERPRINT)) {
		fpManager = mContext.getSystemService(FingerprintManager.class);
		}
		if (pm != null && pm.hasSystemFeature(PackageManager.FEATURE_FACE)) {
		faceManager = mContext.getSystemService(FaceManager.class);
		}

		if (fpManager != null) {
		// Log data for each fingerprint sensor
		for (FingerprintSensorPropertiesInternal propInternal :
		fpManager.getSensorPropertiesInternal()) {
		final FingerprintSensorProperties prop =
		FingerprintSensorProperties.from(propInternal);
		logBiometricProperties(prop,
		FrameworkStatsLog
		.BIOMETRIC_PROPERTIES_COLLECTED__MODALITY__MODALITY_FINGERPRINT,
		toFingerprintSensorType(prop.getSensorType()));
		}
		}

		if (faceManager != null) {
		// Log data for each face sensor
		for (FaceSensorProperties prop : faceManager.getSensorProperties()) {
		logBiometricProperties(prop,
		FrameworkStatsLog.BIOMETRIC_PROPERTIES_COLLECTED__MODALITY__MODALITY_FACE,
		toFaceSensorType(prop.getSensorType()));
		}
		}
		}

		private void getVBMetaDigestInformation() {
		mVbmetaDigest = SystemProperties.get(SYSPROP_NAME_VBETA_DIGEST, VBMETA_DIGEST_UNAVAILABLE);
		Slog.d(TAG, String.format("VBMeta Digest: %s", mVbmetaDigest));