void TLUserData::parse(const TLFrame& src, size_t& rp)
{
// The DCS is defined in GSM 03.38 4.
assert(mDCS<0x100); // Someone forgot to initialize the DCS.
// TP-User-Data-Length
mLength = src.readField(rp,8);
#if 1
// This tail() works because UD is always the last field in the PDU.
mRawData.clone(src.tail(rp));
// Should we do this here?
mRawData.LSB8MSB();
#else
assert(!mUDHI); // We don't support user headers.
switch (mDCS) {
case 0:
case 244:
case 245:
case 246:
case 247:
{
// GSM 7-bit encoding, GSM 03.38 6.
// Check bounds.
if (numChar*7 > (src.size()-rp)) {
LOG(NOTICE) << "badly formatted TL-UD";
SMS_READ_ERROR;
}
BitVector chars(src.tail(rp));
chars.LSB8MSB();
size_t crp=0;
for (unsigned i=0; i<numChar; i++) {
char gsm = chars.readFieldReversed(crp,7);
mData[i] = decodeGSMChar(gsm);
}
mData[numChar]='\0';
if (crp%8) crp += 8 - crp%8;
rp += crp;
return;
}
default:
{
rp += numChar;
sprintf(mData,"unsupported DCS 0x%x", mDCS);
LOG(NOTICE) << mData;
SMS_READ_ERROR;
}
}
#endif
}
void TLUserData::parse(const TLFrame& src, size_t& rp)
{
assert(!mUDHI); // We don't support user headers.
// The DCS is defined in GSM 03.38 4.
assert(mDCS<0x100); // Someone forgot to initialize the DCS.
unsigned numChar = src.readField(rp,8);
switch (mDCS) {
case 0:
case 244:
case 245:
case 246:
case 247:
{
// GSM 7-bit encoding, GSM 03.38 6.
// Check bounds.
if (numChar*7 > (src.size()-rp)) {
LOG(NOTICE) << "badly formatted TL-UD";
SMS_READ_ERROR;
}
BitVector chars(src.tail(rp));
chars.LSB8MSB();
size_t crp=0;
for (unsigned i=0; i<numChar; i++) {
char gsm = chars.readFieldReversed(crp,7);
mData[i] = decodeGSMChar(gsm);
}
mData[numChar]='\0';
if (crp%8) crp += 8 - crp%8;
rp += crp;
return;
}
default:
{
rp += numChar;
sprintf(mData,"unsupported DCS 0x%x", mDCS);
LOG(NOTICE) << mData;
SMS_READ_ERROR;
}
}
}
