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https://github.com/noDRM/DeDRM_tools
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Couple Python 2 fixes in (unsupported) standalone scripts
This commit is contained in:
parent
de23b5c221
commit
9276d77f63
7 changed files with 88 additions and 31 deletions
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@ -68,13 +68,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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@ -39,13 +39,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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@ -45,13 +45,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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@ -56,13 +56,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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@ -48,13 +48,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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@ -51,13 +51,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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@ -292,7 +300,7 @@ if iswindows:
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numBlocks, numExtraBytes = divmod(len(self.bytesToDecrypt), self.blockSize)
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if more == None: # no more calls to decrypt, should have all the data
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if numExtraBytes != 0:
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raise DecryptNotBlockAlignedError, 'Data not block aligned on decrypt'
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raise DecryptNotBlockAlignedError('Data not block aligned on decrypt')
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# hold back some bytes in case last decrypt has zero len
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if (more != None) and (numExtraBytes == 0) and (numBlocks >0) :
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@ -334,7 +342,7 @@ if iswindows:
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def removePad(self, paddedBinaryString, blockSize):
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""" Remove padding from a binary string """
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if not(0<len(paddedBinaryString)):
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raise DecryptNotBlockAlignedError, 'Expected More Data'
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raise DecryptNotBlockAlignedError('Expected More Data')
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return paddedBinaryString[:-ord(paddedBinaryString[-1])]
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class noPadding(Pad):
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@ -364,8 +372,8 @@ if iswindows:
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self.blockSize = blockSize # blockSize is in bytes
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self.padding = padding # change default to noPadding() to get normal ECB behavior
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assert( keySize%4==0 and NrTable[4].has_key(keySize/4)),'key size must be 16,20,24,29 or 32 bytes'
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assert( blockSize%4==0 and NrTable.has_key(blockSize/4)), 'block size must be 16,20,24,29 or 32 bytes'
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assert( keySize%4==0 and keySize/4 in NrTable[4]),'key size must be 16,20,24,29 or 32 bytes'
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assert( blockSize%4==0 and blockSize/4 in NrTable), 'block size must be 16,20,24,29 or 32 bytes'
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self.Nb = self.blockSize/4 # Nb is number of columns of 32 bit words
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self.Nk = keySize/4 # Nk is the key length in 32-bit words
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@ -642,7 +650,7 @@ if iswindows:
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def __init__(self, key = None, padding = padWithPadLen(), keySize=16):
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""" Initialize AES, keySize is in bytes """
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if not (keySize == 16 or keySize == 24 or keySize == 32) :
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raise BadKeySizeError, 'Illegal AES key size, must be 16, 24, or 32 bytes'
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raise BadKeySizeError('Illegal AES key size, must be 16, 24, or 32 bytes')
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Rijndael.__init__( self, key, padding=padding, keySize=keySize, blockSize=16 )
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@ -782,10 +790,11 @@ if iswindows:
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# [c_char_p, c_ulong, c_char_p, c_ulong, c_ulong, c_ulong, c_char_p])
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def pbkdf2(self, passwd, salt, iter, keylen):
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def xorstr( a, b ):
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def xorbytes( a, b ):
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if len(a) != len(b):
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raise Exception("xorstr(): lengths differ")
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return ''.join((chr(ord(x)^ord(y)) for x, y in zip(a, b)))
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raise Exception("xorbytes(): lengths differ")
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return bytes([x ^ y for x, y in zip(a, b)])
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def prf( h, data ):
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hm = h.copy()
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@ -797,13 +806,13 @@ if iswindows:
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T = U
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for i in range(2, itercount+1):
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U = prf( h, U )
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T = xorstr( T, U )
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T = xorbytes( T, U )
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return T
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sha = hashlib.sha1
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digest_size = sha().digest_size
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# l - number of output blocks to produce
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l = keylen / digest_size
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l = keylen // digest_size
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if keylen % digest_size != 0:
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l += 1
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h = hmac.new( passwd, None, sha )
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@ -32,13 +32,21 @@ class SafeUnbuffered:
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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if isinstance(data,str) or isinstance(data,unicode):
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# str for Python3, unicode for Python2
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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try:
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buffer = getattr(self.stream, 'buffer', self.stream)
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# self.stream.buffer for Python3, self.stream for Python2
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buffer.write(data)
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buffer.flush()
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except:
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# We can do nothing if a write fails
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raise
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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iswindows = sys.platform.startswith('win')
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isosx = sys.platform.startswith('darwin')
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