Change in pysim[master]: Add ability to parse SIM Service Table (EF.SST)

[herlesupreeth]

herlesupreeth has uploaded this change for review. ( https://gerrit.osmocom.org/c/pysim/+/17831 )


Change subject: Add ability to parse SIM Service Table (EF.SST)
......................................................................

Add ability to parse SIM Service Table (EF.SST)

As per TS.51.011, This EF indicates which services in the SIM are allocated, and whether, if allocated, the service is activated
.If a service is not indicated as available in the SIM, the ME shall not select this service.

Change-Id: Id28a35727adbaaa9df19b1adc621a0c51ad0e51b
---
M pySim-read.py
M pySim/cards.py
2 files changed, 24 insertions(+), 2 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/31/17831/1

diff --git a/pySim-read.py b/pySim-read.py
index 98a2e81..c04fa1b 100755
--- a/pySim-read.py
+++ b/pySim-read.py
@@ -28,7 +28,7 @@
 import random
 import re
 import sys
-from pySim.ts_51_011 import EF, DF
+from pySim.ts_51_011 import EF, DF, EF_SST_map
 
 from pySim.commands import SimCardCommands
 from pySim.cards import card_detect, Card
@@ -219,5 +219,19 @@
 	else:
 		print("AD: Can't read, response code = %s" % (sw,))
 
+	# EF.SST
+	(res, sw) = card.read_sst()
+	if sw == '9000':
+		# (st_hex, avail_src_list) = res
+		# st_hex - Service Table in hex format
+		# avail_src_list - List of services available
+		print("SIM Service Table: %s" % res[0])
+		# Print those which are available
+		for s in res[1]:
+			if s in EF_SST_map:
+				print('Service %d - %s: %s' % (s, EF_SST_map[s], s in res[1]))
+	else:
+		print("SIM Service Table: Can't read, response code = %s" % (sw,))
+
 	# Done for this card and maybe for everything ?
 	print("Done !\n")
diff --git a/pySim/cards.py b/pySim/cards.py
index d27092d..a12b111 100644
--- a/pySim/cards.py
+++ b/pySim/cards.py
@@ -188,7 +188,15 @@
 		else:
 			return (None, sw)
 
-	# Read the (full) AID for either ISIM or USIM application
+	# Read SIM Service table
+	def read_sst(self):
+		(res, sw) = self._scc.read_binary(EF['SST'])
+		if sw == '9000':
+			return ((res, parse_st(res)), sw)
+		else:
+			return (None, sw)
+
+	# Read the (full) AID for either ISIM or USIM or ISIM application
 	def read_aid(self, isim = False):
 
 		# First (known) halves of the AID

-- 
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Gerrit-Project: pysim
Gerrit-Branch: master
Gerrit-Change-Id: Id28a35727adbaaa9df19b1adc621a0c51ad0e51b
Gerrit-Change-Number: 17831
Gerrit-PatchSet: 1
Gerrit-Owner: herlesupreeth <herlesupreeth at gmail.com>
Gerrit-MessageType: newchange
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