transport: Make all calls go through base class send_apdu_raw()

This allows us to add APDU tracing at one central location in the code

Change-Id: Id0593a2e6d846cc3151443f1022ae7ee030e6673

pySim/transport/__init__.py

@@ -68,7 +68,7 @@ class LinkBase(object):
 				data : string (in hex) of returned data (ex. "074F4EFFFF")
 				sw   : string (in hex) of status word (ex. "9000")
 		"""
-		pass
+		return self._send_apdu_raw(pdu)
 
 	def send_apdu(self, pdu):
 		"""Sends an APDU and auto fetch response data

pySim/transport/calypso.py

@@ -115,7 +115,7 @@ class CalypsoSimLink(LinkBase):
 	def wait_for_card(self, timeout = None, newcardonly = False):
 		pass # Nothing to do really ...
 
-	def send_apdu_raw(self, pdu):
+	def _send_apdu_raw(self, pdu):
 
 		# Request FULL reset
 		req_msg = L1CTLMessageSIM(h2b(pdu))

pySim/transport/modem_atcmd.py

@@ -97,7 +97,7 @@ class ModemATCommandLink(LinkBase):
 	def wait_for_card(self, timeout=None, newcardonly=False):
 		pass # Nothing to do really ...
 
-	def send_apdu_raw(self, pdu):
+	def _send_apdu_raw(self, pdu):
 		# Prepare the command as described in 8.17
 		cmd = 'AT+CSIM=%d,\"%s\"' % (len(pdu), pdu)
 

pySim/transport/pcsc.py

@@ -71,7 +71,7 @@ class PcscSimLink(LinkBase):
 		self.connect()
 		return 1
 
-	def send_apdu_raw(self, pdu):
+	def _send_apdu_raw(self, pdu):
 
 		apdu = h2i(pdu)
 

pySim/transport/serial.py

@@ -180,7 +180,7 @@ class SerialSimLink(LinkBase):
 	def _rx_byte(self):
 		return self._sl.read()
 
-	def send_apdu_raw(self, pdu):
+	def _send_apdu_raw(self, pdu):
 
 		pdu = h2b(pdu)
 		data_len = ord(pdu[4])	# P3