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-rw-r--r--telephony/java/com/android/internal/telephony/cdma/sms/BearerData.java129
-rw-r--r--telephony/java/com/android/internal/telephony/cdma/sms/UserData.java15
2 files changed, 142 insertions, 2 deletions
diff --git a/telephony/java/com/android/internal/telephony/cdma/sms/BearerData.java b/telephony/java/com/android/internal/telephony/cdma/sms/BearerData.java
index 03bdbda..96de456 100644
--- a/telephony/java/com/android/internal/telephony/cdma/sms/BearerData.java
+++ b/telephony/java/com/android/internal/telephony/cdma/sms/BearerData.java
@@ -919,6 +919,122 @@ public final class BearerData {
}
}
+ /**
+ * IS-91 Voice Mail message decoding
+ * (See 3GPP2 C.S0015-A, Table 4.3.1.4.1-1)
+ * (For character encodings, see TIA/EIA/IS-91, Annex B)
+ *
+ * Protocol Summary: The user data payload may contain 3-14
+ * characters. The first two characters are parsed as a number
+ * and indicate the number of voicemails. The third character is
+ * either a SPACE or '!' to indicate normal or urgent priority,
+ * respectively. Any following characters are treated as normal
+ * text user data payload.
+ *
+ * Note that the characters encoding is 6-bit packed.
+ */
+ private static void decodeIs91VoicemailStatus(BearerData bData)
+ throws BitwiseInputStream.AccessException, CodingException
+ {
+ BitwiseInputStream inStream = new BitwiseInputStream(bData.userData.payload);
+ int dataLen = inStream.available() / 6; // 6-bit packed character encoding.
+ int numFields = bData.userData.numFields;
+ if ((dataLen > 14) || (dataLen < 3) || (dataLen < numFields)) {
+ throw new CodingException("IS-91 voicemail status decoding failed");
+ }
+ try {
+ StringBuffer strbuf = new StringBuffer(dataLen);
+ while (inStream.available() >= 6) {
+ strbuf.append(UserData.IA5_MAP[inStream.read(6)]);
+ }
+ String data = strbuf.toString();
+ bData.numberOfMessages = Integer.parseInt(data.substring(0, 2));
+ char prioCode = data.charAt(2);
+ if (prioCode == ' ') {
+ bData.priority = PRIORITY_NORMAL;
+ } else if (prioCode == '!') {
+ bData.priority = PRIORITY_URGENT;
+ } else {
+ throw new CodingException("IS-91 voicemail status decoding failed: " +
+ "illegal priority setting (" + prioCode + ")");
+ }
+ bData.priorityIndicatorSet = true;
+ bData.userData.payloadStr = data.substring(3, numFields - 3);
+ } catch (java.lang.NumberFormatException ex) {
+ throw new CodingException("IS-91 voicemail status decoding failed: " + ex);
+ } catch (java.lang.IndexOutOfBoundsException ex) {
+ throw new CodingException("IS-91 voicemail status decoding failed: " + ex);
+ }
+ }
+
+ /**
+ * IS-91 Short Message decoding
+ * (See 3GPP2 C.S0015-A, Table 4.3.1.4.1-1)
+ * (For character encodings, see TIA/EIA/IS-91, Annex B)
+ *
+ * Protocol Summary: The user data payload may contain 1-14
+ * characters, which are treated as normal text user data payload.
+ * Note that the characters encoding is 6-bit packed.
+ */
+ private static void decodeIs91ShortMessage(BearerData bData)
+ throws BitwiseInputStream.AccessException, CodingException
+ {
+ BitwiseInputStream inStream = new BitwiseInputStream(bData.userData.payload);
+ int dataLen = inStream.available() / 6; // 6-bit packed character encoding.
+ int numFields = bData.userData.numFields;
+ if ((dataLen > 14) || (dataLen < numFields)) {
+ throw new CodingException("IS-91 voicemail status decoding failed");
+ }
+ StringBuffer strbuf = new StringBuffer(dataLen);
+ for (int i = 0; i < numFields; i++) {
+ strbuf.append(UserData.IA5_MAP[inStream.read(6)]);
+ }
+ bData.userData.payloadStr = strbuf.toString();
+ }
+
+ /**
+ * IS-91 CLI message (callback number) decoding
+ * (See 3GPP2 C.S0015-A, Table 4.3.1.4.1-1)
+ *
+ * Protocol Summary: The data payload may contain 1-32 digits,
+ * encoded using standard 4-bit DTMF, which are treated as a
+ * callback number.
+ */
+ private static void decodeIs91Cli(BearerData bData) throws CodingException {
+ BitwiseInputStream inStream = new BitwiseInputStream(bData.userData.payload);
+ int dataLen = inStream.available() / 4; // 4-bit packed DTMF digit encoding.
+ int numFields = bData.userData.numFields;
+ if ((dataLen > 14) || (dataLen < 3) || (dataLen < numFields)) {
+ throw new CodingException("IS-91 voicemail status decoding failed");
+ }
+ CdmaSmsAddress addr = new CdmaSmsAddress();
+ addr.digitMode = CdmaSmsAddress.DIGIT_MODE_4BIT_DTMF;
+ addr.origBytes = bData.userData.payload;
+ addr.numberOfDigits = (byte)numFields;
+ decodeSmsAddress(addr);
+ bData.callbackNumber = addr;
+ }
+
+ private static void decodeIs91(BearerData bData)
+ throws BitwiseInputStream.AccessException, CodingException
+ {
+ switch (bData.userData.msgType) {
+ case UserData.IS91_MSG_TYPE_VOICEMAIL_STATUS:
+ decodeIs91VoicemailStatus(bData);
+ break;
+ case UserData.IS91_MSG_TYPE_CLI:
+ decodeIs91Cli(bData);
+ break;
+ case UserData.IS91_MSG_TYPE_SHORT_MESSAGE_FULL:
+ case UserData.IS91_MSG_TYPE_SHORT_MESSAGE:
+ decodeIs91ShortMessage(bData);
+ break;
+ default:
+ throw new CodingException("unsupported IS-91 message type (" +
+ bData.userData.msgType + ")");
+ }
+ }
+
private static void decodeReplyOption(BearerData bData, BitwiseInputStream inStream)
throws BitwiseInputStream.AccessException, CodingException
{
@@ -1219,7 +1335,18 @@ public final class BearerData {
throw new CodingException("missing MESSAGE_IDENTIFIER subparam");
}
if (bData.userData != null) {
- decodeUserDataPayload(bData.userData, bData.hasUserDataHeader);
+ if (bData.userData.msgEncoding == UserData.ENCODING_IS91_EXTENDED_PROTOCOL) {
+ if ((foundSubparamMask ^
+ (1 << SUBPARAM_MESSAGE_IDENTIFIER) ^
+ (1 << SUBPARAM_USER_DATA))
+ != 0) {
+ Log.e(LOG_TAG, "IS-91 must occur without extra subparams (" +
+ foundSubparamMask + ")");
+ }
+ decodeIs91(bData);
+ } else {
+ decodeUserDataPayload(bData.userData, bData.hasUserDataHeader);
+ }
}
return bData;
} catch (BitwiseInputStream.AccessException ex) {
diff --git a/telephony/java/com/android/internal/telephony/cdma/sms/UserData.java b/telephony/java/com/android/internal/telephony/cdma/sms/UserData.java
index d8a48cc..34cbbfa 100644
--- a/telephony/java/com/android/internal/telephony/cdma/sms/UserData.java
+++ b/telephony/java/com/android/internal/telephony/cdma/sms/UserData.java
@@ -40,12 +40,26 @@ public class UserData {
public static final int ENCODING_GSM_DCS = 0x0A;
/**
+ * IS-91 message types.
+ * (See TIA/EIS/IS-91-A-ENGL 1999, table 3.7.1.1-3)
+ */
+ public static final int IS91_MSG_TYPE_VOICEMAIL_STATUS = 0x82;
+ public static final int IS91_MSG_TYPE_SHORT_MESSAGE_FULL = 0x83;
+ public static final int IS91_MSG_TYPE_CLI = 0x84;
+ public static final int IS91_MSG_TYPE_SHORT_MESSAGE = 0x85;
+
+ /**
* IA5 data encoding character mappings.
* (See CCITT Rec. T.50 Tables 1 and 3)
*
* Note this mapping is the the same as for printable ASCII
* characters, with a 0x20 offset, meaning that the ASCII SPACE
* character occurs with code 0x20.
+ *
+ * Note this mapping is also equivalent to that used by the IS-91
+ * protocol, except for the latter using only 6 bits, and hence
+ * mapping only entries up to the '_' character.
+ *
*/
public static final char[] IA5_MAP = {
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/',
@@ -96,7 +110,6 @@ public class UserData {
public int msgEncoding;
public boolean msgEncodingSet = false;
- // XXX needed when encoding is IS91 or DCS (not supported yet):
public int msgType;
/**
generated by cgit v1.1 at 2025-10-31 15:28:47 +0000