reverted changs to utils

VERSION

@@ -1 +1 @@
-Version 2.2.1 (2012-10-23 10:11:28) stable
+Version 2.2.1 (2012-10-23 10:13:13) stable

gluon/contrib/aes.py

@@ -45,16 +45,8 @@ there clears it up.
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
-#
-# Ported to python 3 by Massimo Di Pierro
-#
 ####
 
-try:
-    import binascii # python 3
-    str2hex = lambda s: binascii.b2a_hex(s.encode('utf8'))
-except ImportError: # python 2
-    str2hex = lambda s: s.decode('hex')
 
 from array import array
 
@@ -444,70 +436,67 @@ gf_mul_by_14 = array('B', [galois_multiply(x, 14) for x in range(256)])
 #
 # More information: http://en.wikipedia.org/wiki/Rijndael_S-box
 
-aes_sbox = array(
-    'B',
-    str2hex('637c777bf26b6fc53001672bfed7ab76'
-            'ca82c97dfa5947f0add4a2af9ca472c0'
-            'b7fd9326363ff7cc34a5e5f171d83115'
-            '04c723c31896059a071280e2eb27b275'
-            '09832c1a1b6e5aa0523bd6b329e32f84'
-            '53d100ed20fcb15b6acbbe394a4c58cf'
-            'd0efaafb434d338545f9027f503c9fa8'
-            '51a3408f929d38f5bcb6da2110fff3d2'
-            'cd0c13ec5f974417c4a77e3d645d1973'
-            '60814fdc222a908846eeb814de5e0bdb'
-            'e0323a0a4906245cc2d3ac629195e479'
-            'e7c8376d8dd54ea96c56f4ea657aae08'
-            'ba78252e1ca6b4c6e8dd741f4bbd8b8a'
-            '703eb5664803f60e613557b986c11d9e'
-            'e1f8981169d98e949b1e87e9ce5528df'
-            '8ca1890dbfe6426841992d0fb054bb16')
+aes_sbox = array('B',
+    '637c777bf26b6fc53001672bfed7ab76'
+    'ca82c97dfa5947f0add4a2af9ca472c0'
+    'b7fd9326363ff7cc34a5e5f171d83115'
+    '04c723c31896059a071280e2eb27b275'
+    '09832c1a1b6e5aa0523bd6b329e32f84'
+    '53d100ed20fcb15b6acbbe394a4c58cf'
+    'd0efaafb434d338545f9027f503c9fa8'
+    '51a3408f929d38f5bcb6da2110fff3d2'
+    'cd0c13ec5f974417c4a77e3d645d1973'
+    '60814fdc222a908846eeb814de5e0bdb'
+    'e0323a0a4906245cc2d3ac629195e479'
+    'e7c8376d8dd54ea96c56f4ea657aae08'
+    'ba78252e1ca6b4c6e8dd741f4bbd8b8a'
+    '703eb5664803f60e613557b986c11d9e'
+    'e1f8981169d98e949b1e87e9ce5528df'
+    '8ca1890dbfe6426841992d0fb054bb16'.decode('hex')
 )
 
 # This is the inverse of the above. In other words:
 # aes_inv_sbox[aes_sbox[val]] == val
 
-aes_inv_sbox = array(
-    'B',
-    str2hex('52096ad53036a538bf40a39e81f3d7fb'
-            '7ce339829b2fff87348e4344c4dee9cb'
-            '547b9432a6c2233dee4c950b42fac34e'
-            '082ea16628d924b2765ba2496d8bd125'
-            '72f8f66486689816d4a45ccc5d65b692'
-            '6c704850fdedb9da5e154657a78d9d84'
-            '90d8ab008cbcd30af7e45805b8b34506'
-            'd02c1e8fca3f0f02c1afbd0301138a6b'
-            '3a9111414f67dcea97f2cfcef0b4e673'
-            '96ac7422e7ad3585e2f937e81c75df6e'
-            '47f11a711d29c5896fb7620eaa18be1b'
-            'fc563e4bc6d279209adbc0fe78cd5af4'
-            '1fdda8338807c731b11210592780ec5f'
-            '60517fa919b54a0d2de57a9f93c99cef'
-            'a0e03b4dae2af5b0c8ebbb3c83539961'
-            '172b047eba77d626e169146355210c7d')
-    )
+aes_inv_sbox = array('B',
+    '52096ad53036a538bf40a39e81f3d7fb'
+    '7ce339829b2fff87348e4344c4dee9cb'
+    '547b9432a6c2233dee4c950b42fac34e'
+    '082ea16628d924b2765ba2496d8bd125'
+    '72f8f66486689816d4a45ccc5d65b692'
+    '6c704850fdedb9da5e154657a78d9d84'
+    '90d8ab008cbcd30af7e45805b8b34506'
+    'd02c1e8fca3f0f02c1afbd0301138a6b'
+    '3a9111414f67dcea97f2cfcef0b4e673'
+    '96ac7422e7ad3585e2f937e81c75df6e'
+    '47f11a711d29c5896fb7620eaa18be1b'
+    'fc563e4bc6d279209adbc0fe78cd5af4'
+    '1fdda8338807c731b11210592780ec5f'
+    '60517fa919b54a0d2de57a9f93c99cef'
+    'a0e03b4dae2af5b0c8ebbb3c83539961'
+    '172b047eba77d626e169146355210c7d'.decode('hex')
+)
 
 # The Rcon table is used in AES's key schedule (key expansion)
 # It's a pre-computed table of exponentation of 2 in AES's finite field
 #
 # More information: http://en.wikipedia.org/wiki/Rijndael_key_schedule
 
-aes_Rcon = array(
-    'B',
-    str2hex('8d01020408102040801b366cd8ab4d9a'
-            '2f5ebc63c697356ad4b37dfaefc59139'
-            '72e4d3bd61c29f254a943366cc831d3a'
-            '74e8cb8d01020408102040801b366cd8'
-            'ab4d9a2f5ebc63c697356ad4b37dfaef'
-            'c5913972e4d3bd61c29f254a943366cc'
-            '831d3a74e8cb8d01020408102040801b'
-            '366cd8ab4d9a2f5ebc63c697356ad4b3'
-            '7dfaefc5913972e4d3bd61c29f254a94'
-            '3366cc831d3a74e8cb8d010204081020'
-            '40801b366cd8ab4d9a2f5ebc63c69735'
-            '6ad4b37dfaefc5913972e4d3bd61c29f'
-            '254a943366cc831d3a74e8cb8d010204'
-            '08102040801b366cd8ab4d9a2f5ebc63'
-            'c697356ad4b37dfaefc5913972e4d3bd'
-            '61c29f254a943366cc831d3a74e8cb')
+aes_Rcon = array('B',
+    '8d01020408102040801b366cd8ab4d9a'
+    '2f5ebc63c697356ad4b37dfaefc59139'
+    '72e4d3bd61c29f254a943366cc831d3a'
+    '74e8cb8d01020408102040801b366cd8'
+    'ab4d9a2f5ebc63c697356ad4b37dfaef'
+    'c5913972e4d3bd61c29f254a943366cc'
+    '831d3a74e8cb8d01020408102040801b'
+    '366cd8ab4d9a2f5ebc63c697356ad4b3'
+    '7dfaefc5913972e4d3bd61c29f254a94'
+    '3366cc831d3a74e8cb8d010204081020'
+    '40801b366cd8ab4d9a2f5ebc63c69735'
+    '6ad4b37dfaefc5913972e4d3bd61c29f'
+    '254a943366cc831d3a74e8cb8d010204'
+    '08102040801b366cd8ab4d9a2f5ebc63'
+    'c697356ad4b37dfaefc5913972e4d3bd'
+    '61c29f254a943366cc831d3a74e8cb'.decode('hex')
 )

gluon/utils.py

@@ -21,32 +21,20 @@ import os
 import re
 import logging
 import socket
+import cPickle
 import base64
 import zlib
 
-try:
-    import cPickle as pickle # python 2
-except ImportError: 
-    import pickle            # python 3
-
-
 try:
     from Crypto.Cipher import AES
 except ImportError:
-    try:
-        from .aes import AES
-    except ImportError:
-        from contrib.aes import AES
+    from contrib import aes as AES
 
 try:
     from contrib.pbkdf2 import pbkdf2_hex
     HAVE_PBKDF2 = True
 except ImportError:
-    try:
-        from .pbkdf2 import pbkdf2_hex
-        HAVE_PBKDF2 = True
-    except (ImportError, ValueError):
-        HAVE_PBKDF2 = False
+    HAVE_PBKDF2 = False
 
 logger = logging.getLogger("web2py")
 
@@ -127,7 +115,7 @@ def pad(s, n=32, padchar='.'):
 def secure_dumps(data, encryption_key, hash_key=None, compression_level=None):
     if not hash_key:
         hash_key = hashlib.sha1(encryption_key).hexdigest()
-    dump = pickle.dumps(data)
+    dump = cPickle.dumps(data)
     if compression_level:
         dump = zlib.compress(dump, compression_level)
     key = pad(encryption_key[:32])
@@ -153,8 +141,8 @@ def secure_loads(data, encryption_key, hash_key=None, compression_level=None):
         data = data.rstrip(' ')
         if compression_level:
             data = zlib.decompress(data)
-        return pickle.loads(data)
-    except (TypeError, pickle.UnpicklingError):
+        return cPickle.loads(data)
+    except (TypeError, cPickle.UnpicklingError):
         return None
 
 ### compute constant CTOKENS
@@ -185,10 +173,7 @@ def initialize_urandom():
             # try to add process-specific entropy
             frandom = open('/dev/urandom', 'wb')
             try:
-                try:
-                    frandom.write(''.join(chr(t) for t in ctokens)) # python 2
-                except:
-                    frandom.write(bytes([]).join(bytes([t]) for t in ctokens)) # python 3
+                frandom.write(''.join(chr(t) for t in ctokens))
             finally:
                 frandom.close()
         except IOError:
@@ -200,11 +185,8 @@ def initialize_urandom():
             """Cryptographically secure session management is not possible on your system because
 your system does not provide a cryptographically secure entropy source.
 This is not specific to web2py; consider deploying on a different operating system.""")
-    try:
-        packed = ''.join(chr(x) for x in ctokens) # python 2
-    except:
-        packed = bytes([]).join(bytes([x]) for x in ctokens) # python 3
-    unpacked_ctokens = struct.unpack('=QQ', packed)
+    unpacked_ctokens = struct.unpack('=QQ', string.join(
+        (chr(x) for x in ctokens), ''))
     return unpacked_ctokens, have_urandom
 UNPACKED_CTOKENS, HAVE_URANDOM = initialize_urandom()