Merge "CEC: Add range validator for one byte parameters" am: e7d24dad51 (0d776820) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/hdmi/HdmiCecMessageValidator.java

+38 −7

Original line number	Diff line number	Diff line
		@@ -152,8 +152,10 @@ public class HdmiCecMessageValidator {
		addValidationInfo(Constants.MESSAGE_SET_OSD_NAME, new AsciiValidator(1, 14), DEST_DIRECT);

		// Messages for the Device Menu Control.
		addValidationInfo(Constants.MESSAGE_MENU_REQUEST, oneByteValidator, DEST_DIRECT);
		addValidationInfo(Constants.MESSAGE_MENU_STATUS, oneByteValidator, DEST_DIRECT);
		addValidationInfo(
		Constants.MESSAGE_MENU_REQUEST, new OneByteRangeValidator(0x00, 0x02), DEST_DIRECT);
		addValidationInfo(
		Constants.MESSAGE_MENU_STATUS, new OneByteRangeValidator(0x00, 0x01), DEST_DIRECT);

		// Messages for the Remote Control Passthrough.
		// TODO: Parse the first parameter and determine if it can have the next parameter.
		@@ -161,7 +163,10 @@ public class HdmiCecMessageValidator {
		new VariableLengthValidator(1, 2), DEST_DIRECT);

		// Messages for the Power Status.
		addValidationInfo(Constants.MESSAGE_REPORT_POWER_STATUS, oneByteValidator, DEST_DIRECT);
		addValidationInfo(
		Constants.MESSAGE_REPORT_POWER_STATUS,
		new OneByteRangeValidator(0x00, 0x03),
		DEST_DIRECT);

		// Messages for the General Protocol.
		addValidationInfo(Constants.MESSAGE_FEATURE_ABORT,
		@@ -173,12 +178,20 @@ public class HdmiCecMessageValidator {
		new FixedLengthValidator(3), DEST_DIRECT);
		addValidationInfo(Constants.MESSAGE_REQUEST_SHORT_AUDIO_DESCRIPTOR,
		oneByteValidator, DEST_DIRECT);
		addValidationInfo(Constants.MESSAGE_SET_SYSTEM_AUDIO_MODE, oneByteValidator, DEST_ALL);
		addValidationInfo(Constants.MESSAGE_SYSTEM_AUDIO_MODE_STATUS,
		oneByteValidator, DEST_DIRECT);
		addValidationInfo(
		Constants.MESSAGE_SET_SYSTEM_AUDIO_MODE,
		new OneByteRangeValidator(0x00, 0x01),
		DEST_ALL);
		addValidationInfo(
		Constants.MESSAGE_SYSTEM_AUDIO_MODE_STATUS,
		new OneByteRangeValidator(0x00, 0x01),
		DEST_DIRECT);

		// Messages for the Audio Rate Control.
		addValidationInfo(Constants.MESSAGE_SET_AUDIO_RATE, oneByteValidator, DEST_DIRECT);
		addValidationInfo(
		Constants.MESSAGE_SET_AUDIO_RATE,
		new OneByteRangeValidator(0x00, 0x06),
		DEST_DIRECT);

		// All Messages for the ARC have no parameters.

		@@ -441,4 +454,22 @@ public class HdmiCecMessageValidator {
		&& isValidAsciiString(params, 1, 14));
		}
		}

		/** Check if the given parameters are one byte parameters and within range. */
		private class OneByteRangeValidator implements ParameterValidator {
		private final int mMinValue, mMaxValue;

		OneByteRangeValidator(int minValue, int maxValue) {
		mMinValue = minValue;
		mMaxValue = maxValue;
		}

		@Override
		public int isValid(byte[] params) {
		if (params.length < 1) {
		return ERROR_PARAMETER_SHORT;
		}
		return toErrorCode(isWithinRange(params[0], mMinValue, mMaxValue));
		}
		}
		}

services/tests/servicestests/src/com/android/server/hdmi/HdmiCecMessageValidatorTest.java

+57 −0

Original line number	Diff line number	Diff line
		@@ -66,10 +66,67 @@ public class HdmiCecMessageValidatorTest {
		@Test
		public void isValid_reportPowerStatus() {
		assertMessageValidity("04:90:00").isEqualTo(OK);
		assertMessageValidity("04:90:03:05").isEqualTo(OK);

		assertMessageValidity("0F:90:00").isEqualTo(ERROR_DESTINATION);
		assertMessageValidity("F0:90").isEqualTo(ERROR_SOURCE);
		assertMessageValidity("04:90").isEqualTo(ERROR_PARAMETER_SHORT);
		assertMessageValidity("04:90:04").isEqualTo(ERROR_PARAMETER);
		}

		@Test
		public void isValid_menuRequest() {
		assertMessageValidity("40:8D:00").isEqualTo(OK);
		assertMessageValidity("40:8D:02:04").isEqualTo(OK);

		assertMessageValidity("0F:8D:00").isEqualTo(ERROR_DESTINATION);
		assertMessageValidity("F0:8D").isEqualTo(ERROR_SOURCE);
		assertMessageValidity("40:8D").isEqualTo(ERROR_PARAMETER_SHORT);
		assertMessageValidity("40:8D:03").isEqualTo(ERROR_PARAMETER);
		}

		@Test
		public void isValid_menuStatus() {
		assertMessageValidity("40:8E:00").isEqualTo(OK);
		assertMessageValidity("40:8E:01:00").isEqualTo(OK);

		assertMessageValidity("0F:8E:00").isEqualTo(ERROR_DESTINATION);
		assertMessageValidity("F0:8E").isEqualTo(ERROR_SOURCE);
		assertMessageValidity("40:8E").isEqualTo(ERROR_PARAMETER_SHORT);
		assertMessageValidity("40:8E:02").isEqualTo(ERROR_PARAMETER);
		}

		@Test
		public void isValid_setSystemAudioMode() {
		assertMessageValidity("40:72:00").isEqualTo(OK);
		assertMessageValidity("4F:72:01:03").isEqualTo(OK);

		assertMessageValidity("F0:72").isEqualTo(ERROR_SOURCE);
		assertMessageValidity("40:72").isEqualTo(ERROR_PARAMETER_SHORT);
		assertMessageValidity("40:72:02").isEqualTo(ERROR_PARAMETER);
		}

		@Test
		public void isValid_systemAudioModeStatus() {
		assertMessageValidity("40:7E:00").isEqualTo(OK);
		assertMessageValidity("40:7E:01:01").isEqualTo(OK);

		assertMessageValidity("0F:7E:00").isEqualTo(ERROR_DESTINATION);
		assertMessageValidity("F0:7E").isEqualTo(ERROR_SOURCE);
		assertMessageValidity("40:7E").isEqualTo(ERROR_PARAMETER_SHORT);
		assertMessageValidity("40:7E:02").isEqualTo(ERROR_PARAMETER);
		}

		@Test
		public void isValid_setAudioRate() {
		assertMessageValidity("40:9A:00").isEqualTo(OK);
		assertMessageValidity("40:9A:03").isEqualTo(OK);
		assertMessageValidity("40:9A:06:02").isEqualTo(OK);

		assertMessageValidity("0F:9A:00").isEqualTo(ERROR_DESTINATION);
		assertMessageValidity("F0:9A").isEqualTo(ERROR_SOURCE);
		assertMessageValidity("40:9A").isEqualTo(ERROR_PARAMETER_SHORT);
		assertMessageValidity("40:9A:07").isEqualTo(ERROR_PARAMETER);
		}

		@Test