public static String decodeDataCodingScheme(Pdu pdu) {
StringBuffer sb = new StringBuffer();
switch (PduUtils.extractDcsEncoding(pdu.getDataCodingScheme())) {
case PduUtils.DCS_ENCODING_7BIT:
sb.append("7-bit GSM Alphabet");
break;
case PduUtils.DCS_ENCODING_8BIT:
sb.append("8-bit encoding");
break;
case PduUtils.DCS_ENCODING_UCS2:
sb.append("UCS2 encoding");
break;
}
// are flash messages are only applicable to general coding group?
if ((pdu.getDataCodingScheme() & ~PduUtils.DCS_CODING_GROUP_GENERAL) == 0) {
if (PduUtils.extractDcsFlash(pdu.getDataCodingScheme()) == PduUtils.DCS_MESSAGE_CLASS_FLASH) {
sb.append(", (Flash Message)");
}
}
return sb.toString();
}
public static byte[] encode7bitUserData(byte[] udhOctets, byte[] textSeptets) {
// UDH octets and text have to be encoded together in a single pass
// UDH octets will need to be converted to unencoded septets in order
// to properly pad the data
if (udhOctets == null) {
// convert string to uncompressed septets
return unencodedSeptetsToEncodedSeptets(textSeptets);
} else {
// convert UDH octets as if they were encoded septets
// NOTE: DO NOT DISCARD THE LAST SEPTET IF IT IS ZERO
byte[] udhSeptets = PduUtils.encodedSeptetsToUnencodedSeptets(udhOctets, false);
// combine the two arrays and encode them as a whole
byte[] combined = new byte[udhSeptets.length + textSeptets.length];
System.arraycopy(udhSeptets, 0, combined, 0, udhSeptets.length);
System.arraycopy(textSeptets, 0, combined, udhSeptets.length, textSeptets.length);
// convert encoded byte[] to a PDU string
return unencodedSeptetsToEncodedSeptets(combined);
}
}
public static String decodeFirstOctet(Pdu pdu) {
// Use reflection to check for method signatures hasTpXXX() and getTpXXX()
// that are specific to a particular type in actual object
StringBuffer sb = new StringBuffer();
sb.append("First Octet: " + PduUtils.byteToPdu(pdu.getFirstOctet()));
sb.append(" [");
// TP-MTI
switch (pdu.getTpMti()) {
case PduUtils.TP_MTI_SMS_DELIVER:
sb.append("TP-MTI: (SMS-DELIVER)");
break;
case PduUtils.TP_MTI_SMS_STATUS_REPORT:
sb.append("TP-MTI: (SMS-STATUS REPORT)");
break;
case PduUtils.TP_MTI_SMS_SUBMIT:
sb.append("TP-MTI: (SMS-SUBMIT)");
break;
default:
throw new RuntimeException("Invalid message type");
}
// TP-MMS
if (hasTpField(pdu, "TpMms") != null) {
if (hasTpField(pdu, "TpMms")) {
sb.append(", TP-MMS: (Has more messages)");
} else {
sb.append(", TP-MMS: (has no messages)");
}
}
// TP-RD
if (hasTpField(pdu, "TpRd") != null) {
if (hasTpField(pdu, "TpRd")) {
sb.append(", TP-RD: (Reject duplicates)");
} else {
sb.append(", TP-RD: (allow duplicates)");
}
}
// TP-VPF
if ((hasTpField(pdu, "TpVpf") != null) && (hasTpField(pdu, "TpVpf") != false)) {
switch (getTpField(pdu, "TpVpf")) {
case PduUtils.TP_VPF_INTEGER:
sb.append(", TP-VPF: (validity format, integer");
break;
case PduUtils.TP_VPF_TIMESTAMP:
sb.append(", TP-VPF: (validity format, timestamp");
break;
case PduUtils.TP_VPF_NONE:
sb.append(", TP-VPF: (validity format, none)");
break;
}
}
// TP-SRI
if (hasTpField(pdu, "TpSri") != null) {
if (hasTpField(pdu, "TpSri")) {
sb.append(", TP-SRI: (Requests Status Report)");
} else {
sb.append(", TP-SRI: (No Status Report)");
}
}
// TP-SRR
if (hasTpField(pdu, "TpSrr") != null) {
if (hasTpField(pdu, "TpSrr")) {
sb.append(", TP-SRR: (Requests Status Report)");
} else {
sb.append(", TP-SRR: (No Status Report)");
}
}
// TP-UDHI
if (pdu.hasTpUdhi()) {
sb.append(", TP-UDHI: (has UDH)");
} else {
sb.append(", TP-UDHI: (no UDH)");
}
sb.append("]");
sb.append("\n");
return sb.toString();
}
@Override
public String getPduUserData() {
return PduUtils.bytesToPdu(getDataBytes());
}
