mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2024-11-05 13:36:10 +06:00
493 lines
16 KiB
Python
493 lines
16 KiB
Python
# This is a python script. You need a Python interpreter to run it.
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# For example, ActiveState Python, which exists for windows.
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# Changelog
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# 0.01 - Initial version
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# 0.02 - Support more eReader files. Support bold text and links. Fix PML decoder parsing bug.
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# 0.03 - Fix incorrect variable usage at one place.
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import struct, binascii, zlib, os, sha, sys, os.path
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ECB = 0
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CBC = 1
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class Des:
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__pc1 = [56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
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9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
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62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
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13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3]
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__left_rotations = [1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1]
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__pc2 = [13, 16, 10, 23, 0, 4,2, 27, 14, 5, 20, 9,
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22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
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40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
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43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31]
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__ip = [57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
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61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7,
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56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2,
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60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6]
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__expansion_table = [31, 0, 1, 2, 3, 4, 3, 4, 5, 6, 7, 8,
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7, 8, 9, 10, 11, 12,11, 12, 13, 14, 15, 16,
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15, 16, 17, 18, 19, 20,19, 20, 21, 22, 23, 24,
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23, 24, 25, 26, 27, 28,27, 28, 29, 30, 31, 0]
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__sbox = [[14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
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0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
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4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
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15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13],
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[15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
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3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
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0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
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13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9],
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[10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
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13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
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13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
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1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12],
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[7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
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13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
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10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
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3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14],
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[2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
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14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
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4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
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11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3],
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[12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
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10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
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9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
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4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13],
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[4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
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13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
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1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
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6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12],
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[13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
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1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
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7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
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2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11],]
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__p = [15, 6, 19, 20, 28, 11,27, 16, 0, 14, 22, 25,
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4, 17, 30, 9, 1, 7,23,13, 31, 26, 2, 8,18, 12, 29, 5, 21, 10,3, 24]
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__fp = [39, 7, 47, 15, 55, 23, 63, 31,38, 6, 46, 14, 54, 22, 62, 30,
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37, 5, 45, 13, 53, 21, 61, 29,36, 4, 44, 12, 52, 20, 60, 28,
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35, 3, 43, 11, 51, 19, 59, 27,34, 2, 42, 10, 50, 18, 58, 26,
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33, 1, 41, 9, 49, 17, 57, 25,32, 0, 40, 8, 48, 16, 56, 24]
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# Type of crypting being done
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ENCRYPT = 0x00
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DECRYPT = 0x01
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def __init__(self, key, mode=ECB, IV=None):
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if len(key) != 8:
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raise ValueError("Invalid DES key size. Key must be exactly 8 bytes long.")
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self.block_size = 8
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self.key_size = 8
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self.__padding = ''
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self.setMode(mode)
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if IV:
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self.setIV(IV)
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self.L = []
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self.R = []
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self.Kn = [ [0] * 48 ] * 16 # 16 48-bit keys (K1 - K16)
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self.final = []
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self.setKey(key)
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def getKey(self):
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return self.__key
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def setKey(self, key):
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self.__key = key
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self.__create_sub_keys()
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def getMode(self):
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return self.__mode
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def setMode(self, mode):
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self.__mode = mode
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def getIV(self):
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return self.__iv
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def setIV(self, IV):
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if not IV or len(IV) != self.block_size:
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raise ValueError("Invalid Initial Value (IV), must be a multiple of " + str(self.block_size) + " bytes")
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self.__iv = IV
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def getPadding(self):
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return self.__padding
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def __String_to_BitList(self, data):
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l = len(data) * 8
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result = [0] * l
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pos = 0
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for c in data:
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i = 7
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ch = ord(c)
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while i >= 0:
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if ch & (1 << i) != 0:
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result[pos] = 1
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else:
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result[pos] = 0
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pos += 1
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i -= 1
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return result
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def __BitList_to_String(self, data):
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result = ''
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pos = 0
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c = 0
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while pos < len(data):
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c += data[pos] << (7 - (pos % 8))
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if (pos % 8) == 7:
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result += chr(c)
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c = 0
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pos += 1
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return result
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def __permutate(self, table, block):
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return map(lambda x: block[x], table)
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def __create_sub_keys(self):
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key = self.__permutate(Des.__pc1, self.__String_to_BitList(self.getKey()))
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i = 0
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self.L = key[:28]
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self.R = key[28:]
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while i < 16:
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j = 0
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while j < Des.__left_rotations[i]:
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self.L.append(self.L[0])
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del self.L[0]
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self.R.append(self.R[0])
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del self.R[0]
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j += 1
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self.Kn[i] = self.__permutate(Des.__pc2, self.L + self.R)
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i += 1
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def __des_crypt(self, block, crypt_type):
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block = self.__permutate(Des.__ip, block)
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self.L = block[:32]
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self.R = block[32:]
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if crypt_type == Des.ENCRYPT:
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iteration = 0
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iteration_adjustment = 1
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else:
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iteration = 15
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iteration_adjustment = -1
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i = 0
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while i < 16:
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tempR = self.R[:]
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self.R = self.__permutate(Des.__expansion_table, self.R)
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self.R = map(lambda x, y: x ^ y, self.R, self.Kn[iteration])
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B = [self.R[:6], self.R[6:12], self.R[12:18], self.R[18:24], self.R[24:30], self.R[30:36], self.R[36:42], self.R[42:]]
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j = 0
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Bn = [0] * 32
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pos = 0
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while j < 8:
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m = (B[j][0] << 1) + B[j][5]
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n = (B[j][1] << 3) + (B[j][2] << 2) + (B[j][3] << 1) + B[j][4]
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v = Des.__sbox[j][(m << 4) + n]
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Bn[pos] = (v & 8) >> 3
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Bn[pos + 1] = (v & 4) >> 2
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Bn[pos + 2] = (v & 2) >> 1
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Bn[pos + 3] = v & 1
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pos += 4
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j += 1
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self.R = self.__permutate(Des.__p, Bn)
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self.R = map(lambda x, y: x ^ y, self.R, self.L)
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self.L = tempR
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i += 1
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iteration += iteration_adjustment
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self.final = self.__permutate(Des.__fp, self.R + self.L)
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return self.final
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def crypt(self, data, crypt_type):
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if not data:
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return ''
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if len(data) % self.block_size != 0:
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if crypt_type == Des.DECRYPT: # Decryption must work on 8 byte blocks
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raise ValueError("Invalid data length, data must be a multiple of " + str(self.block_size) + " bytes\n.")
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if not self.getPadding():
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raise ValueError("Invalid data length, data must be a multiple of " + str(self.block_size) + " bytes\n. Try setting the optional padding character")
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else:
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data += (self.block_size - (len(data) % self.block_size)) * self.getPadding()
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if self.getMode() == CBC:
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if self.getIV():
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iv = self.__String_to_BitList(self.getIV())
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else:
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raise ValueError("For CBC mode, you must supply the Initial Value (IV) for ciphering")
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i = 0
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dict = {}
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result = []
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while i < len(data):
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block = self.__String_to_BitList(data[i:i+8])
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if self.getMode() == CBC:
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if crypt_type == Des.ENCRYPT:
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block = map(lambda x, y: x ^ y, block, iv)
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processed_block = self.__des_crypt(block, crypt_type)
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if crypt_type == Des.DECRYPT:
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processed_block = map(lambda x, y: x ^ y, processed_block, iv)
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iv = block
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else:
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iv = processed_block
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else:
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processed_block = self.__des_crypt(block, crypt_type)
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result.append(self.__BitList_to_String(processed_block))
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i += 8
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if crypt_type == Des.DECRYPT and self.getPadding():
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s = result[-1]
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while s[-1] == self.getPadding():
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s = s[:-1]
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result[-1] = s
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return ''.join(result)
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def encrypt(self, data, pad=''):
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self.__padding = pad
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return self.crypt(data, Des.ENCRYPT)
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def decrypt(self, data, pad=''):
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self.__padding = pad
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return self.crypt(data, Des.DECRYPT)
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class Sectionizer:
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def __init__(self, filename, ident):
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self.contents = file(filename, 'rb').read()
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self.header = self.contents[0:72]
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self.num_sections, = struct.unpack('>H', self.contents[76:78])
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if self.header[0x3C:0x3C+8] != ident:
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raise ValueError('Invalid file format')
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self.sections = []
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for i in xrange(self.num_sections):
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offset, a1,a2,a3,a4 = struct.unpack('>LBBBB', self.contents[78+i*8:78+i*8+8])
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flags, val = a1, a2<<16|a3<<8|a4
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self.sections.append( (offset, flags, val) )
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def loadSection(self, section):
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if section + 1 == self.num_sections:
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end_off = len(self.contents)
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else:
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end_off = self.sections[section + 1][0]
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off = self.sections[section][0]
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return self.contents[off:end_off]
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def sanitizeFileName(s):
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r = ''
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for c in s.lower():
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if c in "abcdefghijklmnopqrstuvwxyz0123456789_.-":
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r += c
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return r
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def fixKey(key):
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def fixByte(b):
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return b ^ ((b ^ (b<<1) ^ (b<<2) ^ (b<<3) ^ (b<<4) ^ (b<<5) ^ (b<<6) ^ (b<<7) ^ 0x80) & 0x80)
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return "".join([chr(fixByte(ord(a))) for a in key])
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class EreaderProcessor:
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def __init__(self, section_reader, username, creditcard):
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self.section_reader = section_reader
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data = section_reader(0)
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version, = struct.unpack('>H', data[0:2])
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if version != 272 and version != 260:
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raise ValueError('incorrect eReader version %d (error 1)' % version)
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data = section_reader(1)
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self.data = data
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des = Des(fixKey(data[0:8]))
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cookie_shuf, cookie_size = struct.unpack('>LL', des.decrypt(data[-8:]))
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if cookie_shuf < 3 or cookie_shuf > 0x14 or cookie_size < 0xf0 or cookie_size > 0x200:
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raise ValueError('incorrect eReader version (error 2)')
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input = des.decrypt(data[-cookie_size:])
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def unshuff(data, shuf):
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r = [''] * len(data)
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j = 0
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for i in xrange(len(data)):
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j = (j + shuf) % len(data)
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r[j] = data[i]
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assert len("".join(r)) == len(data)
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return "".join(r)
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r = unshuff(input[0:-8], cookie_shuf)
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def fixUsername(s):
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r = ''
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for c in s.lower():
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if (c >= 'a' and c <= 'z' or c >= '0' and c <= '9'):
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r += c
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return r
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user_key = struct.pack('>LL', binascii.crc32(fixUsername(username)) & 0xffffffff, binascii.crc32(creditcard[-8:])& 0xffffffff)
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drm_sub_version = struct.unpack('>H', r[0:2])[0]
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self.num_text_pages = struct.unpack('>H', r[2:4])[0] - 1
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self.num_image_pages = struct.unpack('>H', r[26:26+2])[0]
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self.first_image_page = struct.unpack('>H', r[24:24+2])[0]
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self.flags = struct.unpack('>L', r[4:8])[0]
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reqd_flags = (1<<9) | (1<<7) | (1<<10)
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if (self.flags & reqd_flags) != reqd_flags:
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print "Flags: 0x%X" % self.flags
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raise ValueError('incompatible eReader file')
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des = Des(fixKey(user_key))
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if version == 260:
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if drm_sub_version != 13:
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raise ValueError('incorrect eReader version %d (error 3)' % drm_sub_version)
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encrypted_key = r[44:44+8]
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encrypted_key_sha = r[52:52+20]
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elif version == 272:
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encrypted_key = r[172:172+8]
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encrypted_key_sha = r[56:56+20]
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self.content_key = des.decrypt(encrypted_key)
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if sha.new(self.content_key).digest() != encrypted_key_sha:
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raise ValueError('Incorrect Name and/or Credit Card')
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def getNumImages(self):
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return self.num_image_pages
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def getImage(self, i):
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sect = self.section_reader(self.first_image_page + i)
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name = sect[4:4+32].strip('\0')
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data = sect[62:]
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return sanitizeFileName(name), data
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def getText(self):
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des = Des(fixKey(self.content_key))
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r = ''
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for i in xrange(self.num_text_pages):
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r += zlib.decompress(des.decrypt(self.section_reader(1 + i)))
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return r
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class PmlConverter:
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def __init__(self, s):
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self.s = s
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self.pos = 0
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def nextOptAttr(self):
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p = self.pos
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if self.s[p:p+2] != '="':
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return None
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r = ''
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p += 2
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while self.s[p] != '"':
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r += self.s[p]
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p += 1
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self.pos = p + 1
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return r
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def next(self):
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p = self.pos
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if p >= len(self.s):
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return None
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if self.s[p] != '\\':
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res = self.s.find('\\', p)
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if res == -1:
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res = len(self.s)
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self.pos = res
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return self.s[p : res], None, None
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c = self.s[p+1]
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if c in 'pxcriuovtnsblBk-lI\\d':
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self.pos = p + 2
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return None, c, None
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if c in 'TwmqQ':
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self.pos = p + 2
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return None, c, self.nextOptAttr()
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if c == 'a':
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self.pos = p + 5
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return None, c, int(self.s[p+2:p+5])
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if c == 'U':
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self.pos = p + 6
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return None, c, int(self.s[p+2:p+6], 16)
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c = self.s[p+1:p+1+2]
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if c in ('X0','X1','X2','X3','X4','Sp','Sb'):
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self.pos = p + 3
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return None, c, None
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if c in ('C0','C1','C2','C3','C4','Fn','Sd'):
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self.pos = p + 3
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return None, c, self.nextOptAttr()
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print "unknown escape code %s" % c
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self.pos = p + 1
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return None, None, None
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def linkPrinter(link):
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return '<a href="%s">' % link
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html_tags = {
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'c' : ('<p align="center">', '</p>'),
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'r' : ('<p align="right">', '</p>'),
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'i' : ('<i>', '</i>'),
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'u' : ('<u>', '</u>'),
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'b' : ('<strong>', '</strong>'),
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'B' : ('<strong>', '</strong>'),
|
|
'o' : ('<strike>', '</strike>'),
|
|
'v' : ('<!-- ', ' -->'),
|
|
't' : ('', ''),
|
|
'Sb' : ('<sub>', '</sub>'),
|
|
'Sp' : ('<sup>', '</sup>'),
|
|
'X0' : ('<h1>', '</h1>'),
|
|
'X1' : ('<h2>', '</h2>'),
|
|
'X2' : ('<h3>', '</h3>'),
|
|
'X3' : ('<h4>', '</h4>'),
|
|
'X4' : ('<h5>', '</h5>'),
|
|
'l' : ('<font size="+2">', '</font>'),
|
|
'q' : (linkPrinter, '</a>'),
|
|
}
|
|
html_one_tags = {
|
|
'p' : '<br><br>'
|
|
}
|
|
pml_chars = {
|
|
160 : ' ',130 : '—',131: 'ƒ',132: '„',
|
|
133: '…',134: '†',135: '‡',138: 'Š',
|
|
139: '‹',140: 'Œ',145: '‘',146: '’',
|
|
147: '“',148: '”',149: '•',150: '–',
|
|
151: '—',153: '™',154: 'š',155: '›',
|
|
156: 'œ',159: 'Ÿ'
|
|
}
|
|
def process(self):
|
|
final = '<html><body>\n'
|
|
in_tags = []
|
|
def makeText(s):
|
|
s = s.replace('&', '&')
|
|
#s = s.replace('"', '"')
|
|
s = s.replace('<', '<')
|
|
s = s.replace('>', '>')
|
|
s = s.replace('\n', '<br>\n')
|
|
return s
|
|
while True:
|
|
r = self.next()
|
|
if not r:
|
|
break
|
|
text, cmd, attr = r
|
|
if text:
|
|
final += makeText(text)
|
|
if cmd:
|
|
def getTag(ti, end):
|
|
cmd, attr = ti
|
|
r = self.html_tags[cmd][end]
|
|
if type(r) != str:
|
|
r = r(attr)
|
|
return r
|
|
|
|
if cmd in self.html_tags:
|
|
pair = (cmd, attr)
|
|
if cmd not in [a for (a,b) in in_tags]:
|
|
final += getTag(pair, False)
|
|
in_tags.append(pair)
|
|
else:
|
|
j = len(in_tags)
|
|
while True:
|
|
j = j - 1
|
|
final += getTag(in_tags[j], True)
|
|
if in_tags[j][0] == cmd:
|
|
break
|
|
del in_tags[j]
|
|
while j < len(in_tags):
|
|
final += getTag(in_tags[j], False)
|
|
j = j + 1
|
|
|
|
if cmd in self.html_one_tags:
|
|
final += self.html_one_tags[cmd]
|
|
if cmd == 'm':
|
|
final += '<img src="%s">' % attr
|
|
if cmd == 'Q':
|
|
final += '<a name="%s"> </a>' % attr
|
|
if cmd == 'a':
|
|
final += self.pml_chars.get(attr, '&#%d;' % attr)
|
|
if cmd == 'U':
|
|
final += '&#%d;' % attr
|
|
final += '</body></html>\n'
|
|
while True:
|
|
s = final.replace('<br>\n<br>\n<br>\n', '<br>\n<br>\n')
|
|
if s == final:
|
|
break
|
|
final = s
|
|
return final
|
|
|
|
def convertEreaderToHtml(infile, name, cc, outdir):
|
|
if not os.path.exists(outdir):
|
|
os.makedirs(outdir)
|
|
sect = Sectionizer(infile, 'PNRdPPrs')
|
|
er = EreaderProcessor(sect.loadSection, name, cc)
|
|
|
|
for i in xrange(er.getNumImages()):
|
|
name, contents = er.getImage(i)
|
|
file(os.path.join(outdir, name), 'wb').write(contents)
|
|
|
|
pml = PmlConverter(er.getText())
|
|
file(os.path.join(outdir, 'book.html'),'wb').write(pml.process())
|
|
|
|
print "eReader2Html v0.03. Copyright (c) 2008 The Dark Reverser"
|
|
if len(sys.argv)!=5:
|
|
print "Converts eReader books to HTML"
|
|
print "Usage:"
|
|
print " ereader2html infile.pdb outdir \"your name\" credit_card_number "
|
|
print "Note:"
|
|
print " It's enough to enter the last 8 digits of the credit card number"
|
|
else:
|
|
infile, outdir, name, cc = sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4]
|
|
try:
|
|
print "Processing...",
|
|
convertEreaderToHtml(infile, name, cc, outdir)
|
|
print "done"
|
|
except ValueError, e:
|
|
print "Error: %s" % e |