HACK: support for SIM factory file formats

Change-Id: I23cd37fc06b6e2d21964fd4f2694d9ee3c6012d4

execute_ipr.py

@@ -0,0 +1,141 @@
+#!/usr/bin/python3
+
+from pySim.transport.pcsc import PcscSimLink
+from pySim.utils import enc_iccid, enc_imsi
+
+from smartcard.Exceptions import NoCardException, CardRequestTimeoutException
+from smartcard.System import readers
+
+from lark import Lark, Transformer, Token, Tree
+import sys
+
+from format_ipr import ScriptFormatIPR
+
+class DataTransform():
+    ''' Transform raw/logical input data into the format use on the SIM card,
+        like encoding the PIN from '1234' -> 3132334 or IMSI encoding'''
+    def transform(self, inp):
+        outp = {}
+        for k in inp.keys():
+            f = getattr(self, 'xfrm_'+k, None)
+            if f != None:
+                outp[k] = f(inp[k])
+            else:
+                outp[k] = inp[k]
+        return outp
+
+    def xfrm_PIN(self, pin):
+        ret = ''
+        for c in str(pin):
+            ret += '3%c' % c
+        return ret
+    def xfrm_PIN1(self, pin):
+        return self.xfrm_PIN(pin)
+    def xfrm_PIN2(self, pin):
+        return self.xfrm_PIN(pin)
+    def xfrm_PUK1(self, pin):
+        return self.xfrm_PIN(pin)
+    def xfrm_PUK2(self, pin):
+        return self.xfrm_PIN(pin)
+    def xfrm_ADM1(self, pin):
+        return self.xfrm_PIN(pin)
+    def xfrm_ADM2(self, pin):
+        return self.xfrm_PIN(pin)
+    def xfrm_IMSI(self, imsi):
+        return enc_imsi(imsi)
+    def xfrm_ICCID(self, iccid):
+        # TODO: calculate luhn check digit
+        return enc_iccid(iccid)
+
+
+def expand_cmd_template(cmd, templates):
+    ''' Take a single command, supstituting all [] template keys with data from 'template' '''
+    ret = ""
+    for e in cmd:
+        if e[0] == 'hexstr':
+            ret += e[1]
+        if e[0] == 'key':
+            ret += templates[e[1]]
+    return ret
+
+def match_sw(actual_sw, sw_match):
+    ''' Check if actual_sw matches any of the templates given in sw_match'''
+    def match_sw_single(actual_sw, match):
+        match = match.lower()
+        if 'x' in match:
+            FIXME
+        else:
+            if actual_sw.lower() == match:
+                return True
+        return False
+
+    if sw_match == []:
+        return True
+
+    for m in sw_match:
+        if match_sw_single(actual_sw, m):
+            return True
+
+    return False
+
+
+def execute_ipr_raw(s, sl, dynamic_data_raw = {}):
+    """ translate a single LDR statement to IPR format. """
+    if s == None:
+        None
+    elif s == 'reset':
+        print("RESET")
+        sl.reset_card()
+    elif s[0] == 'rem':
+        print("REM %s" % (s[1]))
+    elif s[0] == 'cmd':
+        d = s[1]
+        req = expand_cmd_template(d['req'], dynamic_data_raw)
+        rsp = d['rsp']
+        print("\tREQ: %s, EXP: %s" % (req, rsp))
+        (data, sw) = sl.send_apdu_raw(req)
+        if not match_sw(sw, rsp):
+            raise ValueError("SW %s doesn't match expected %s" % (sw, rsp))
+        print("\tRSP: %s\n" % (sw))
+
+def execute_ipr(s, sl, dynamic_data = {}):
+    """ translate a single LDR statement to IPR format; optionally substitute dynamic_data. """
+    xf = DataTransform()
+    return execute_ipr_raw(s, sl, xf.transform(dynamic_data))
+
+
+'''Dictionaries like this must be generated for each card to be programmed'''
+demo_dict = {
+        'PIN1': '1234',
+        'PIN2': '1234',
+        'PUK1': '12345678',
+        'PUK2': '12345678',
+        'ADM1': '11111111',
+
+        'KIC1': '100102030405060708090a0b0c0d0e0f',
+        'KID1': '101102030405060708090a0b0c0d0e0f',
+        'KIK1': '102102030405060708090a0b0c0d0e0f',
+
+        'KIC2': '200102030405060708090a0b0c0d0e0f',
+        'KID2': '201102030405060708090a0b0c0d0e0f',
+        'KIK2': '202102030405060708090a0b0c0d0e0f',
+
+        'KIC3': '300102030405060708090a0b0c0d0e0f',
+        'KID3': '301102030405060708090a0b0c0d0e0f',
+        'KIK3': '302102030405060708090a0b0c0d0e0f',
+
+        'ICCID': '012345678901234567',
+        'IMSI': '001010123456789',
+        'ACC': '0200',
+        'KI': '000102030405060708090a0b0c0d0e0f',
+        'OPC': '101112131415161718191a1b1c1d1e1f',
+        'VERIFY_ICCID': '0001020304050608090a0b0c0d0e0f',
+        }
+
+
+sl = PcscSimLink(0)
+
+infile_name = sys.argv[1]
+
+fmt = ScriptFormatIPR()
+fmt.parse_process_file(infile_name, execute_ipr, {'sl':sl, 'dynamic_data':demo_dict})

format_ipr.py

@@ -0,0 +1,55 @@
+from lark import Lark, Transformer, Token, Tree
+from script_format import ScriptFormat
+from format_ldr import LdrXfrm
+
+class IprXfrm(LdrXfrm):
+    """ transform the parse tree into a more easily consumable form """
+    def key(self, items):
+        return ('key', ''.join(list(items)))
+    def req(self, items):
+        return items[:-1]
+    def rsp(self, items):
+        return items[:-1]
+    #def NEWLINE(self, items):
+        #return None
+
+
+class ScriptFormatIPR(ScriptFormat):
+    # parser for the IPR file format as used by the SIM card factory
+    ipr_parser = Lark(r"""
+        script: statement*
+        ?statement: cmd | rst | rem | NEWLINE
+
+        NONL: /[^\n]/+
+        rem: "//" NONL? NEWLINE
+
+        ALNUM: DIGIT | LETTER | "_"
+        key: "[" ALNUM+ "]"
+
+        cmd: req rsp
+
+        req: "I:" [hexstr|key]+ NEWLINE
+        hexstr: HEX_ITEM+
+        HEX_ITEM: HEXDIGIT ~ 2
+
+        rsp: "O:" swpattern? NEWLINE
+        swpattern: HEX_OR_X ~ 4
+        HEX_OR_X: HEXDIGIT | "X" | "x"
+
+        rst: "RESET" NEWLINE
+
+        %import common.ESCAPED_STRING -> STRING
+        %import common.WS_INLINE
+        %import common.HEXDIGIT
+        %import common.DIGIT
+        %import common.LETTER
+        %import common.NEWLINE
+        %ignore WS_INLINE
+
+        """, start='script', parser='lalr')#, lexer='standard')
+
+    def parse_xform(self, text):
+        tree = self.ipr_parser.parse(text)
+        #print(tree.pretty())
+        p = IprXfrm().transform(tree)
+        return p

format_ldr.py

@@ -0,0 +1,74 @@
+from lark import Lark, Transformer, Token, Tree
+from script_format import ScriptFormat
+
+class LdrXfrm(Transformer):
+    """ transform the parse tree into a more easily consumable form """
+    def rst(self, items):
+        return ('reset')
+    def NONL(self, items):
+        return ''.join([i for i in items.value])
+    def rem(self, items):
+        return ('rem', items[0])
+    def swmatch(self, items):
+        return ('swmatch', items)
+    def cmd(self, items):
+        return ('cmd', {'req': items[0], 'rsp': items[1]})
+
+    def todigit(self, item):
+        """ convert from Token/Tree to raw hex-digit """
+        if isinstance(item, Token):
+            return item.value
+        elif isinstance(item, Tree):
+            return item.data
+    def hex_item(self, items):
+        """ return one byte as two-digit HEX string """
+        return "%s%s" % (items[0].value, items[1].value)
+    def hexstr(self, items):
+        """ return list of two-digit HEX strings """
+        return ('hexstr', ''.join(list(items)))
+    def swpattern(self, items):
+        """ return list of four HEX nibbles (or 'x' as wildcard) """
+        arr = [self.todigit(x) for x in items]
+        return ''.join(arr)
+
+class ScriptFormatLDR(ScriptFormat):
+    # parser for the LDR file format as generated by Simulity Profile Editor
+    ldr_parser = Lark(r"""
+        script: statement*
+        ?statement: cmd | rst | rem | NEWLINE
+
+        BSLASH: "\\\n"
+        %ignore BSLASH
+
+        NONL: /[^\n]/+
+        rem: "REM" NONL? NEWLINE
+
+        ALNUM: DIGIT | LETTER | "_"
+        key: "[" ALNUM+ "]"
+
+        cmd: "CMD" hexstr [swmatch] NEWLINE
+        cmd_item: hexstr | key
+        hexstr: hex_item+
+        hex_item: HEXDIGIT HEXDIGIT
+
+        swmatch: "(" swpattern ("," swpattern)* ")"
+        swpattern: hex_or_x hex_or_x hex_or_x hex_or_x
+        ?hex_or_x: HEXDIGIT | "X" -> x | "x" -> x
+
+        rst: "RST" NEWLINE
+
+        %import common.ESCAPED_STRING -> STRING
+        %import common.WS_INLINE
+        %import common.HEXDIGIT
+        %import common.DIGIT
+        %import common.LETTER
+        %import common.NEWLINE
+        %ignore WS_INLINE
+
+        """, start='script')
+
+    def parse_xform(self, text):
+        tree = self.ldr_parser.parse(text)
+        #print(tree.pretty())
+        p = LdrXfrm().transform(tree)
+        return p

ldr_to_ipr.py

@@ -0,0 +1,84 @@
+#!/usr/bin/python3
+
+from lark import Lark, Transformer, Token, Tree
+import sys
+
+from format_ldr import ScriptFormatLDR
+from format_ipr import ScriptFormatIPR
+
+def split_hex(value):
+    """ split a string of hex digits into groups (bytes) of two digits. """
+    return ' '.join(value[i:i+2] for i in range(0, len(value), 2))
+
+def expand_cmd(cmd):
+    ret = ""
+    for e in cmd:
+        if e[0] == 'hexstr':
+            ret += e[1]
+        else:
+            raise ValueError("Unsupported '%s'" % (e[0]))
+    return ret
+
+
+def ldr_stmt_to_ipr(s):
+    """ translate a single LDR statement to IPR format. """
+    if s == None:
+        None
+    elif s == 'reset':
+        print("RESET")
+        print("")
+    elif s[0] == 'rem':
+        print("//\t%s" % s[1])
+    elif s[0] == 'cmd':
+        cmd = s[1]
+        req = cmd['req']
+        rsp = cmd['rsp']
+        print("I: %s" % split_hex(expand_cmd([req])))
+        if rsp != None and len(rsp) != 1:
+            if rsp[0] != 'swmatch' or len(rsp[1]) != 1:
+                raise ValueError("Unsupported '%s'" % (rsp))
+            print("O: %s" % rsp[1][0])
+        else:
+            print("O:")
+        print("")
+    else:
+        print("Unknown %s" % (s.pretty()))
+        raise ValueError()
+
+
+test_text = '''
+RST
+CMD     E0 CA DF 1F 13
+CMD E0 CA DF 1F (90 00)
+CMD E0 CA DF 1F (61 XX, 90 00)
+REM foo bar
+CMD     E4 DA DF 20 09 EA 53 F8 D7 64 1E D9 88 00 \\
+        (90 00 , 6B 00)
+'''
+
+
+def run_statement(s):
+    print(s)
+
+def fii(s):
+    if s.data == 'rst':
+        print("=> RESET")
+        # FIXME: actually perform card reset
+    elif s.data == 'rem':
+        print(s)
+    elif s.data == 'cmd':
+        #print(s)
+        cmd = s.children[0]
+        print(s.pretty())
+        # FIXME: if swmatch: match all contained swpattern
+    else:
+        print("Unknown %s" % (s.pretty()))
+        raise ValueError()
+
+
+#process_ldr(test_text, run_statement)
+#process_ldr(test_text, ldr_stmt_to_ipr)
+
+fmt = ScriptFormatLDR()
+fmt.parse_process_file(sys.argv[1], ldr_stmt_to_ipr)
+#fmt.parse_process_file(sys.argv[1], run_statement)

script_format.py

@@ -0,0 +1,13 @@
+
+class ScriptFormat():
+
+    def parse_process(self, text, stmt_cb, stmt_cb_kwargs={}):
+        p = self.parse_xform(text)
+        #print(p.pretty())
+        for stmt in p.children:
+            stmt_cb(stmt, **stmt_cb_kwargs)
+
+    def parse_process_file(self, fname, stmt_cb, stmt_cb_kwargs={}):
+        f = open(fname, "r")
+        text = f.read()
+        return self.parse_process(text, stmt_cb, stmt_cb_kwargs)