Fixes for SMS Cell Broadcast support. (66040bbb) · Commits · e / os / android_frameworks_base

telephony/java/android/telephony/SmsCbConstants.java

+15 −12

Original line number	Diff line number	Diff line
		@@ -22,18 +22,6 @@ package android.telephony;
		* {@hide}
		*/
		public interface SmsCbConstants {
		/** Cell wide immediate geographical scope */
		public static final int GEOGRAPHICAL_SCOPE_CELL_WIDE_IMMEDIATE = 0;

		/** PLMN wide geographical scope */
		public static final int GEOGRAPHICAL_SCOPE_PLMN_WIDE = 1;

		/** Location / service area wide geographical scope */
		public static final int GEOGRAPHICAL_SCOPE_LA_WIDE = 2;

		/** Cell wide geographical scope */
		public static final int GEOGRAPHICAL_SCOPE_CELL_WIDE = 3;

		/** Start of PWS Message Identifier range (includes ETWS and CMAS). */
		public static final int MESSAGE_ID_PWS_FIRST_IDENTIFIER = 0x1100;

		@@ -111,4 +99,19 @@ public interface SmsCbConstants {

		/** ETWS message code flag to activate the emergency user alert. */
		public static final int MESSAGE_CODE_ETWS_EMERGENCY_USER_ALERT = 0x200;

		/** ETWS warning type value for earthquake. */
		public static final int ETWS_WARNING_TYPE_EARTHQUAKE = 0x00;

		/** ETWS warning type value for tsunami. */
		public static final int ETWS_WARNING_TYPE_TSUNAMI = 0x01;

		/** ETWS warning type value for earthquake and tsunami. */
		public static final int ETWS_WARNING_TYPE_EARTHQUAKE_AND_TSUNAMI = 0x02;

		/** ETWS warning type value for test broadcast. */
		public static final int ETWS_WARNING_TYPE_TEST = 0x03;

		/** ETWS warning type value for other notifications. */
		public static final int ETWS_WARNING_TYPE_OTHER = 0x04;
		}

telephony/java/android/telephony/SmsCbMessage.java

+118 −1

Original line number	Diff line number	Diff line
		@@ -16,9 +16,11 @@

		package android.telephony;

		import android.text.format.Time;
		import android.util.Log;

		import com.android.internal.telephony.GsmAlphabet;
		import com.android.internal.telephony.IccUtils;
		import com.android.internal.telephony.gsm.SmsCbHeader;

		import java.io.UnsupportedEncodingException;
		@@ -93,10 +95,27 @@ public class SmsCbMessage {

		private String mBody;

		/** Timestamp of ETWS primary notification with security. */
		private long mPrimaryNotificationTimestamp;

		/** 43 byte digital signature of ETWS primary notification with security. */
		private byte[] mPrimaryNotificationDigitalSignature;

		private SmsCbMessage(byte[] pdu) throws IllegalArgumentException {
		mHeader = new SmsCbHeader(pdu);
		if (mHeader.format == SmsCbHeader.FORMAT_ETWS_PRIMARY) {
		mBody = "ETWS";
		// ETWS primary notification with security is 56 octets in length
		if (pdu.length >= SmsCbHeader.PDU_LENGTH_ETWS) {
		mPrimaryNotificationTimestamp = getTimestampMillis(pdu);
		mPrimaryNotificationDigitalSignature = new byte[43];
		// digital signature starts after 6 byte header and 7 byte timestamp
		System.arraycopy(pdu, 13, mPrimaryNotificationDigitalSignature, 0, 43);
		}
		} else {
		parseBody(pdu);
		}
		}

		/**
		* Return the geographical scope of this message, one of
		@@ -156,6 +175,55 @@ public class SmsCbMessage {
		return mHeader.updateNumber;
		}

		/**
		* Get the format of this message.
		* @return {@link SmsCbHeader#FORMAT_GSM}, {@link SmsCbHeader#FORMAT_UMTS}, or
		* {@link SmsCbHeader#FORMAT_ETWS_PRIMARY}
		*/
		public int getMessageFormat() {
		return mHeader.format;
		}

		/**
		* For ETWS primary notifications, return the emergency user alert flag.
		* @return true to notify terminal to activate emergency user alert; false otherwise
		*/
		public boolean getEtwsEmergencyUserAlert() {
		return mHeader.etwsEmergencyUserAlert;
		}

		/**
		* For ETWS primary notifications, return the popup flag.
		* @return true to notify terminal to activate display popup; false otherwise
		*/
		public boolean getEtwsPopup() {
		return mHeader.etwsPopup;
		}

		/**
		* For ETWS primary notifications, return the warning type.
		* @return a value such as {@link SmsCbConstants#ETWS_WARNING_TYPE_EARTHQUAKE}
		*/
		public int getEtwsWarningType() {
		return mHeader.etwsWarningType;
		}

		/**
		* For ETWS primary notifications, return the Warning-Security-Information timestamp.
		* @return a timestamp in System.currentTimeMillis() format.
		*/
		public long getEtwsSecurityTimestamp() {
		return mPrimaryNotificationTimestamp;
		}

		/**
		* For ETWS primary notifications, return the 43 byte digital signature.
		* @return a byte array containing a copy of the digital signature
		*/
		public byte[] getEtwsSecuritySignature() {
		return mPrimaryNotificationDigitalSignature.clone();
		}

		/**
		* Parse and unpack the body text according to the encoding in the DCS.
		* After completing successfully this method will have assigned the body
		@@ -334,6 +402,55 @@ public class SmsCbMessage {
		return body;
		}

		/**
		* Parses an ETWS primary notification timestamp and returns a currentTimeMillis()-style
		* timestamp. Copied from com.android.internal.telephony.gsm.SmsMessage.
		* @param pdu the ETWS primary notification PDU to decode
		* @return the UTC timestamp from the Warning-Security-Information parameter
		*/
		private long getTimestampMillis(byte[] pdu) {
		// Timestamp starts after CB header, in pdu[6]
		int year = IccUtils.gsmBcdByteToInt(pdu[6]);
		int month = IccUtils.gsmBcdByteToInt(pdu[7]);
		int day = IccUtils.gsmBcdByteToInt(pdu[8]);
		int hour = IccUtils.gsmBcdByteToInt(pdu[9]);
		int minute = IccUtils.gsmBcdByteToInt(pdu[10]);
		int second = IccUtils.gsmBcdByteToInt(pdu[11]);

		// For the timezone, the most significant bit of the
		// least significant nibble is the sign byte
		// (meaning the max range of this field is 79 quarter-hours,
		// which is more than enough)

		byte tzByte = pdu[12];

		// Mask out sign bit.
		int timezoneOffset = IccUtils.gsmBcdByteToInt((byte) (tzByte & (~0x08)));

		timezoneOffset = ((tzByte & 0x08) == 0) ? timezoneOffset : -timezoneOffset;

		Time time = new Time(Time.TIMEZONE_UTC);

		// It's 2006. Should I really support years < 2000?
		time.year = year >= 90 ? year + 1900 : year + 2000;
		time.month = month - 1;
		time.monthDay = day;
		time.hour = hour;
		time.minute = minute;
		time.second = second;

		// Timezone offset is in quarter hours.
		return time.toMillis(true) - (timezoneOffset * 15 * 60 * 1000);
		}

		/**
		* Append text to the message body. This is used to concatenate multi-page GSM broadcasts.
		* @param body the text to append to this message
		*/
		public void appendToBody(String body) {
		mBody = mBody + body;
		}

		@Override
		public String toString() {
		return "SmsCbMessage{" + mHeader.toString() + ", language=" + mLanguage +

telephony/java/com/android/internal/telephony/IntRangeManager.java

+65 −57

Original line number	Diff line number	Diff line
		@@ -290,44 +290,45 @@ public abstract class IntRangeManager {
		return true;
		} else {
		// find last range that can coalesce into the new combined range
		for (int endIndex = startIndex+1; endIndex < len; endIndex++) {
		IntRange endRange = mRanges.get(endIndex);
		if ((endId + 1) < endRange.startId) {
		int endIndex = startIndex;
		for (int testIndex = startIndex+1; testIndex < len; testIndex++) {
		IntRange testRange = mRanges.get(testIndex);
		if ((endId + 1) < testRange.startId) {
		break;
		} else {
		endIndex = testIndex;
		}
		}
		// no adjacent IntRanges to combine
		if (endIndex == startIndex) {
		// add range from range.endId+1 to endId,
		// values from startId to range.endId are already enabled
		if (tryAddSingleRange(range.endId + 1, endId, true)) {
		range.endId = endId;
		// insert new ClientRange in place
		range.insert(new ClientRange(startId, endId, client));
		// coalesce range with following ranges up to endIndex-1
		// remove each range after adding its elements, so the index
		// of the next range to join is always startIndex+1.
		// i is the index if no elements were removed: we only care
		// about the number of loop iterations, not the value of i.
		int joinIndex = startIndex + 1;
		for (int i = joinIndex; i < endIndex; i++) {
		IntRange joinRange = mRanges.get(joinIndex);
		range.clients.addAll(joinRange.clients);
		mRanges.remove(joinRange);
		}
		return true;
		} else {
		return false; // failed to update radio
		}
		} else if (endId <= endRange.endId) {
		// add range from range.endId+1 to start of last overlapping range,
		// values from endRange.startId to endId are already enabled
		if (tryAddSingleRange(range.endId + 1, endRange.startId - 1, true)) {
		range.endId = endRange.endId;
		}
		// get last range to coalesce into start range
		IntRange endRange = mRanges.get(endIndex);
		// Values from startId to range.endId have already been enabled.
		// if endId > endRange.endId, then enable range from range.endId+1 to endId,
		// else enable range from range.endId+1 to endRange.startId-1, because
		// values from endRange.startId to endId have already been added.
		int newRangeEndId = (endId <= endRange.endId) ? endRange.startId - 1 : endId;
		if (tryAddSingleRange(range.endId + 1, newRangeEndId, true)) {
		range.endId = endId;
		// insert new ClientRange in place
		range.insert(new ClientRange(startId, endId, client));
		// coalesce range with following ranges up to endIndex
		// coalesce range with following ranges up to endIndex-1
		// remove each range after adding its elements, so the index
		// of the next range to join is always startIndex+1.
		// i is the index if no elements were removed: we only care
		// of the next range to join is always startIndex+1 (joinIndex).
		// i is the index if no elements had been removed: we only care
		// about the number of loop iterations, not the value of i.
		int joinIndex = startIndex + 1;
		for (int i = joinIndex; i <= endIndex; i++) {
		for (int i = joinIndex; i < endIndex; i++) {
		IntRange joinRange = mRanges.get(joinIndex);
		range.clients.addAll(joinRange.clients);
		mRanges.remove(joinRange);
		@@ -339,8 +340,6 @@ public abstract class IntRangeManager {
		}
		}
		}
		}
		}

		// append new range after existing IntRanges
		if (tryAddSingleRange(startId, endId, true)) {
		@@ -435,6 +434,8 @@ public abstract class IntRangeManager {
		addRange(range.startId, nextStartId - 1, false);
		rangeCopy.startId = nextStartId;
		}
		// init largestEndId
		largestEndId = clients.get(1).endId;
		}

		// go through remaining ClientRanges, creating new IntRanges when
		@@ -442,7 +443,6 @@ public abstract class IntRangeManager {
		// remove the original IntRange and append newRanges to mRanges.
		// Otherwise, leave the original IntRange in mRanges and return false.
		ArrayList<IntRange> newRanges = new ArrayList<IntRange>();
		newRanges.add(rangeCopy);

		IntRange currentRange = rangeCopy;
		for (int nextIndex = crIndex + 1; nextIndex < crLength; nextIndex++) {
		@@ -454,6 +454,7 @@ public abstract class IntRangeManager {
		}
		addRange(largestEndId + 1, nextCr.startId - 1, false);
		currentRange.endId = largestEndId;
		newRanges.add(currentRange);
		currentRange = new IntRange(nextCr);
		} else {
		currentRange.clients.add(nextCr);
		@@ -463,18 +464,25 @@ public abstract class IntRangeManager {
		}
		}

		if (updateStarted) {
		if (!finishUpdate()) {
		// remove any channels between largestEndId and endId
		if (largestEndId < endId) {
		if (!updateStarted) {
		startUpdate();
		updateStarted = true;
		}
		addRange(largestEndId + 1, endId, false);
		currentRange.endId = largestEndId;
		}
		newRanges.add(currentRange);

		if (updateStarted && !finishUpdate()) {
		return false; // failed to update radio
		} else {
		// remove the original IntRange and insert newRanges in place.
		mRanges.remove(crIndex);
		mRanges.addAll(crIndex, newRanges);
		return true;
		}
		} else {

		// replace the original IntRange with newRanges
		mRanges.remove(i);
		mRanges.addAll(i, newRanges);
		return true;
		}
		} else {
		// not the ClientRange to remove; save highest end ID seen so far
		if (cr.endId > largestEndId) {

telephony/java/com/android/internal/telephony/gsm/SmsCbHeader.java

+36 −2

Original line number	Diff line number	Diff line
		@@ -34,6 +34,11 @@ public class SmsCbHeader implements SmsCbConstants {
		*/
		public static final int FORMAT_UMTS = 2;

		/**
		* GSM pdu format, as defined in 3gpp TS 23.041, section 9.4.1.3
		*/
		public static final int FORMAT_ETWS_PRIMARY = 3;

		/**
		* Message type value as defined in 3gpp TS 25.324, section 11.1.
		*/
		@@ -42,7 +47,12 @@ public class SmsCbHeader implements SmsCbConstants {
		/**
		* Length of GSM pdus
		*/
		private static final int PDU_LENGTH_GSM = 88;
		public static final int PDU_LENGTH_GSM = 88;

		/**
		* Maximum length of ETWS primary message GSM pdus
		*/
		public static final int PDU_LENGTH_ETWS = 56;

		public final int geographicalScope;

		@@ -60,12 +70,30 @@ public class SmsCbHeader implements SmsCbConstants {

		public final int format;

		public final boolean etwsEmergencyUserAlert;

		public final boolean etwsPopup;

		public final int etwsWarningType;

		public SmsCbHeader(byte[] pdu) throws IllegalArgumentException {
		if (pdu == null \|\| pdu.length < PDU_HEADER_LENGTH) {
		throw new IllegalArgumentException("Illegal PDU");
		}

		if (pdu.length <= PDU_LENGTH_GSM) {
		if (pdu.length <= PDU_LENGTH_ETWS) {
		format = FORMAT_ETWS_PRIMARY;
		geographicalScope = -1; //not applicable
		messageCode = -1;
		updateNumber = -1;
		messageIdentifier = ((pdu[2] & 0xff) << 8) \| (pdu[3] & 0xff);
		dataCodingScheme = -1;
		pageIndex = -1;
		nrOfPages = -1;
		etwsEmergencyUserAlert = (pdu[4] & 0x1) != 0;
		etwsPopup = (pdu[5] & 0x80) != 0;
		etwsWarningType = (pdu[4] & 0xfe) >> 1;
		} else if (pdu.length <= PDU_LENGTH_GSM) {
		// GSM pdus are no more than 88 bytes
		format = FORMAT_GSM;
		geographicalScope = (pdu[0] & 0xc0) >> 6;
		@@ -85,6 +113,9 @@ public class SmsCbHeader implements SmsCbConstants {

		this.pageIndex = pageIndex;
		this.nrOfPages = nrOfPages;
		etwsEmergencyUserAlert = false;
		etwsPopup = false;
		etwsWarningType = -1;
		} else {
		// UMTS pdus are always at least 90 bytes since the payload includes
		// a number-of-pages octet and also one length octet per page
		@@ -107,6 +138,9 @@ public class SmsCbHeader implements SmsCbConstants {
		// actual payload may contain several pages.
		pageIndex = 1;
		nrOfPages = 1;
		etwsEmergencyUserAlert = false;
		etwsPopup = false;
		etwsWarningType = -1;
		}
		}

telephony/tests/telephonytests/src/com/android/internal/telephony/GsmSmsCbTest.java

0 → 100644

+712 −0

File added.

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