def _process_message(self, data):
# Now get message body
msgl = data.pop(0)
msg = encode_bytes(data[:msgl])
# check for header
headlen = ud_len = 0
if self.mtype & 0x40: # UDHI present
ud_len = data.pop(0)
self.udh = UserDataHeader.from_bytes(data[:ud_len])
headlen = (ud_len + 1) * 8
if self.fmt == 0x00:
while headlen % 7:
headlen += 1
headlen /= 7
headlen = int(headlen)
if self.fmt == 0x00:
self.text = unpack_msg(msg)[headlen:msgl].decode("gsm0338")
elif self.fmt == 0x04:
self.text = data[ud_len:].tobytes()
elif self.fmt == 0x08:
data = data[ud_len:].tolist()
_bytes = [
int("%02X%02X" % (data[i], data[i + 1]), 16)
for i in range(0, len(data), 2)
]
self.text = ''.join(list(map(chr, _bytes)))
def convert_response(response):
index = response[0].group('index')
if index == '1':
self.device.set_property(
consts.USD_INTFACE, 'State', 'user-response')
else:
self.device.set_property(consts.USD_INTFACE, 'State', 'idle')
resp = response[0].group('resp')
code = response[0].group('code')
if code is not None:
code = int(code)
if ((code & 0x10) == 0x10):
log.err("We don't yet handle ISO 639 encoded USSD"
" - please report")
raise E.MalformedUssdPduError(resp)
if ((code & 0xf4) == 0xf4):
log.err("We don't yet handle 8 bit encoded USSD"
" - please report")
raise E.MalformedUssdPduError(resp)
ret = unpack_msg(resp)
if is_gsm_text(ret):
return ret
try:
return resp.decode('hex')
except TypeError:
raise E.MalformedUssdPduError(resp)
def _process_message(self, data):
# Now get message body
msgl = data.pop(0)
msg = encode_bytes(data[:msgl])
# check for header
headlen = ud_len = 0
if self.mtype & 0x40: # UDHI present
ud_len = data.pop(0)
self.udh = UserDataHeader.from_bytes(data[:ud_len])
headlen = (ud_len + 1) * 8
if self.fmt == 0x00:
while headlen % 7:
headlen += 1
headlen /= 7
headlen = int(headlen)
if self.fmt == 0x00:
# XXX: Use unpack_msg2
data = data[ud_len:].tolist()
#self.text = unpack_msg2(data).decode("gsm0338")
self.text = unpack_msg(msg)[headlen:msgl].decode("gsm0338")
elif self.fmt == 0x04:
self.text = data[ud_len:].tostring()
elif self.fmt == 0x08:
data = data[ud_len:].tolist()
_bytes = [int("%02X%02X" % (data[i], data[i + 1]), 16)
for i in range(0, len(data), 2)]
self.text = u''.join(list(map(unichr, _bytes)))
def convert_response(response):
index = response[0].group('index')
if index == '1':
self.device.set_property(
consts.USD_INTFACE, 'State', 'user-response')
else:
self.device.set_property(consts.USD_INTFACE, 'State', 'idle')
resp = response[0].group('resp')
if resp is None:
return "" # returning the Empty string is valid
try:
ret = unpack_msg(resp).decode("gsm0338")
if is_gsm_text(ret):
return ret
except UnicodeError:
pass
try:
return resp.decode('hex')
except TypeError:
raise MalformedUssdPduError(resp)
def _set_pdu(self, pdu):
if not self._strict and len(pdu) % 2:
# if not strict and PDU-length is odd, remove the last character
# and make it even. See the discussion of this bug at
# http://github.com/pmarti/python-messaging/issues#issue/7
pdu = pdu[:-1]
if len(pdu) % 2:
raise ValueError("Can not decode an odd-length pdu")
# XXX: Should we keep the original PDU or the modified one?
self._pdu = pdu
data = hex_to_int_array(self._pdu)
# Service centre address
smscl = data.pop(0)
if smscl > 0:
smscertype = data.pop(0)
smscl -= 1
self.csca = swap_number(encode_bytes(data[:smscl]))
if (smscertype >> 4) & 0x07 == consts.INTERNATIONAL:
self.csca = '+%s' % self.csca
data = data[smscl:]
else:
self.csca = None
# 1 byte(octet) == 2 char
# Message type TP-MTI bits 0,1
# More messages to send/deliver bit 2
# Status report request indicated bit 5
# User Data Header Indicator bit 6
# Reply path set bit 7
try:
self.mtype = data.pop(0)
except TypeError:
raise ValueError("Decoding this type of SMS is not supported yet")
mtype = self.mtype & 0x03
if mtype == 0x02:
return self._decode_status_report_pdu(data)
if mtype == 0x01:
raise ValueError("Cannot decode a SmsSubmitReport message yet")
sndlen = data.pop(0)
if sndlen % 2:
sndlen += 1
sndlen = int(sndlen / 2.0)
sndtype = (data.pop(0) >> 4) & 0x07
if sndtype == consts.ALPHANUMERIC:
# coded according to 3GPP TS 23.038 [9] GSM 7-bit default alphabet
sender = unpack_msg(data[:sndlen]).decode("gsm0338")
else:
# Extract phone number of sender
sender = swap_number(encode_bytes(data[:sndlen]))
if sndtype == consts.INTERNATIONAL:
sender = '+%s' % sender
self.number = sender
data = data[sndlen:]
# 1 byte TP-PID (Protocol IDentifier)
self.pid = data.pop(0)
# 1 byte TP-DCS (Data Coding Scheme)
self.dcs = data.pop(0)
if self.dcs & (0x04 | 0x08) == 0:
self.fmt = 0x00
elif self.dcs & 0x04:
self.fmt = 0x04
elif self.dcs & 0x08:
self.fmt = 0x08
datestr = ''
# Get date stamp (sender's local time)
date = list(encode_bytes(data[:6]))
for n in range(1, len(date), 2):
date[n - 1], date[n] = date[n], date[n - 1]
data = data[6:]
# Get sender's offset from GMT (TS 23.040 TP-SCTS)
tz = data.pop(0)
offset = ((tz & 0x07) * 10 + ((tz & 0xf0) >> 4)) * 15
if (tz & 0x08):
offset = offset * -1
# 02/08/26 19:37:41
datestr = "%s%s/%s%s/%s%s %s%s:%s%s:%s%s" % tuple(date)
outputfmt = '%y/%m/%d %H:%M:%S'
sndlocaltime = datetime.strptime(datestr, outputfmt)
sndoffset = timedelta(minutes=offset)
# date as UTC
self.date = sndlocaltime - sndoffset
self._process_message(data)
