Update tlslite to 0.4.6.

third_party/tlslite/tlslite/utils/compat.py

+# Author: Trevor Perrin
+# See the LICENSE file for legal information regarding use of this file.
+
 """Miscellaneous functions to mask Python version differences."""
 
 import sys
 import os
+import math
+import binascii
 
-if sys.version_info < (2,2):
-    raise AssertionError("Python 2.2 or later required")
+if sys.version_info >= (3,0):
 
-if sys.version_info < (2,3):
+    def compat26Str(x): return x
+    
+    # Python 3 requires bytes instead of bytearrays for HMAC   
+    
+    # So, python 2.6 requires strings, python 3 requires 'bytes',
+    # and python 2.7 can handle bytearrays...     
+    def compatHMAC(x): return bytes(x)
+    
+    def raw_input(s):
+        return input(s)
+    
+    # So, the python3 binascii module deals with bytearrays, and python2
+    # deals with strings...  I would rather deal with the "a" part as
+    # strings, and the "b" part as bytearrays, regardless of python version,
+    # so...
+    def a2b_hex(s):
+        try:
+            b = bytearray(binascii.a2b_hex(bytearray(s, "ascii")))
+        except Exception as e:
+            raise SyntaxError("base16 error: %s" % e) 
+        return b  
 
-    def enumerate(collection):
-        return zip(range(len(collection)), collection)
+    def a2b_base64(s):
+        try:
+            b = bytearray(binascii.a2b_base64(bytearray(s, "ascii")))
+        except Exception as e:
+            raise SyntaxError("base64 error: %s" % e)
+        return b
 
-    class Set:
-        def __init__(self, seq=None):
-            self.values = {}
-            if seq:
-                for e in seq:
-                    self.values[e] = None
+    def b2a_hex(b):
+        return binascii.b2a_hex(b).decode("ascii")    
+            
+    def b2a_base64(b):
+        return binascii.b2a_base64(b).decode("ascii") 
 
-        def add(self, e):
-            self.values[e] = None
+    def b2a_base32(b):
+        return base64.b32encode(b).decode("ascii")
+        
+    def readStdinBinary():
+        return sys.stdin.buffer.read()        
 
-        def discard(self, e):
-            if e in self.values.keys():
-                del(self.values[e])
-
-        def union(self, s):
-            ret = Set()
-            for e in self.values.keys():
-                ret.values[e] = None
-            for e in s.values.keys():
-                ret.values[e] = None
-            return ret
-
-        def issubset(self, other):
-            for e in self.values.keys():
-                if e not in other.values.keys():
-                    return False
-            return True
-
-        def __nonzero__( self):
-            return len(self.values.keys())
-
-        def __contains__(self, e):
-            return e in self.values.keys()
-
-        def __iter__(self):
-            return iter(set.values.keys())
-
-
-if os.name != "java":
-
-    import array
-    def createByteArraySequence(seq):
-        return array.array('B', seq)
-    def createByteArrayZeros(howMany):
-        return array.array('B', [0] * howMany)
-    def concatArrays(a1, a2):
-        return a1+a2
-
-    def bytesToString(bytes):
-        return bytes.tostring()
-    def stringToBytes(s):
-        bytes = createByteArrayZeros(0)
-        bytes.fromstring(s)
-        return bytes
-
-    import math
-    def numBits(n):
-        if n==0:
-            return 0
-        s = "%x" % n
-        return ((len(s)-1)*4) + \
-        {'0':0, '1':1, '2':2, '3':2,
-         '4':3, '5':3, '6':3, '7':3,
-         '8':4, '9':4, 'a':4, 'b':4,
-         'c':4, 'd':4, 'e':4, 'f':4,
-         }[s[0]]
-        return int(math.floor(math.log(n, 2))+1)
-
-    BaseException = Exception
-    import sys
-    import traceback
-    def formatExceptionTrace(e):
-        newStr = "".join(traceback.format_exception(sys.exc_type, sys.exc_value, sys.exc_traceback))
-        return newStr
+    def long(n):
+        return n
 
 else:
-    #Jython 2.1 is missing lots of python 2.3 stuff,
-    #which we have to emulate here:
-    #NOTE: JYTHON SUPPORT NO LONGER WORKS, DUE TO USE OF GENERATORS.
-    #THIS CODE IS LEFT IN SO THAT ONE JYTHON UPDATES TO 2.2, IT HAS A
-    #CHANCE OF WORKING AGAIN.
+    # Python 2.6 requires strings instead of bytearrays in a couple places,
+    # so we define this function so it does the conversion if needed.
+    if sys.version_info < (2,7):
+        def compat26Str(x): return str(x)
+    else:
+        def compat26Str(x): return x
 
-    import java
-    import jarray
+    # So, python 2.6 requires strings, python 3 requires 'bytes',
+    # and python 2.7 can handle bytearrays...     
+    def compatHMAC(x): return compat26Str(x)
 
-    def createByteArraySequence(seq):
-        if isinstance(seq, type("")): #If it's a string, convert
-            seq = [ord(c) for c in seq]
-        return jarray.array(seq, 'h') #use short instead of bytes, cause bytes are signed
-    def createByteArrayZeros(howMany):
-        return jarray.zeros(howMany, 'h') #use short instead of bytes, cause bytes are signed
-    def concatArrays(a1, a2):
-        l = list(a1)+list(a2)
-        return createByteArraySequence(l)
+    def a2b_hex(s):
+        try:
+            b = bytearray(binascii.a2b_hex(s))
+        except Exception as e:
+            raise SyntaxError("base16 error: %s" % e)
+        return b
 
-    #WAY TOO SLOW - MUST BE REPLACED------------
-    def bytesToString(bytes):
-        return "".join([chr(b) for b in bytes])
+    def a2b_base64(s):
+        try:
+            b = bytearray(binascii.a2b_base64(s))
+        except Exception as e:
+            raise SyntaxError("base64 error: %s" % e)
+        return b
+        
+    def b2a_hex(b):
+        return binascii.b2a_hex(compat26Str(b))
+        
+    def b2a_base64(b):
+        return binascii.b2a_base64(compat26Str(b))
+        
+    def b2a_base32(b):
+        return base64.b32encode(str(b))
 
-    def stringToBytes(s):
-        bytes = createByteArrayZeros(len(s))
-        for count, c in enumerate(s):
-            bytes[count] = ord(c)
-        return bytes
-    #WAY TOO SLOW - MUST BE REPLACED------------
+import traceback
+def formatExceptionTrace(e):
+    newStr = "".join(traceback.format_exception(sys.exc_type, sys.exc_value, sys.exc_traceback))
+    return newStr
 
-    def numBits(n):
-        if n==0:
-            return 0
-        n= 1L * n; #convert to long, if it isn't already
-        return n.__tojava__(java.math.BigInteger).bitLength()
-
-    #Adjust the string to an array of bytes
-    def stringToJavaByteArray(s):
-        bytes = jarray.zeros(len(s), 'b')
-        for count, c in enumerate(s):
-            x = ord(c)
-            if x >= 128: x -= 256
-            bytes[count] = x
-        return bytes
-
-    BaseException = java.lang.Exception
-    import sys
-    import traceback
-    def formatExceptionTrace(e):
-        newStr = "".join(traceback.format_exception(sys.exc_type, sys.exc_value, sys.exc_traceback))
-        return newStr