mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2024-11-05 13:36:10 +06:00
693 lines
28 KiB
Python
693 lines
28 KiB
Python
#!/usr/bin/env python
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# vim:ts=4:sw=4:softtabstop=4:smarttab:expandtab
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#
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# erdr2pml.py
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#
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# 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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#
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# Based on ereader2html version 0.08 plus some later small fixes
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#
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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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# 0.03b - enhancement by DeBockle (version 259 support)
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# Custom version 0.03 - no change to eReader support, only usability changes
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# - start of pep-8 indentation (spaces not tab), fix trailing blanks
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# - version variable, only one place to change
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# - added main routine, now callable as a library/module,
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# means tools can add optional support for ereader2html
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# - outdir is no longer a mandatory parameter (defaults based on input name if missing)
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# - time taken output to stdout
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# - Psyco support - reduces runtime by a factor of (over) 3!
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# E.g. (~600Kb file) 90 secs down to 24 secs
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# - newstyle classes
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# - changed map call to list comprehension
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# may not work with python 2.3
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# without Psyco this reduces runtime to 90%
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# E.g. 90 secs down to 77 secs
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# Psyco with map calls takes longer, do not run with map in Psyco JIT!
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# - izip calls used instead of zip (if available), further reduction
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# in run time (factor of 4.5).
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# E.g. (~600Kb file) 90 secs down to 20 secs
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# - Python 2.6+ support, avoid DeprecationWarning with sha/sha1
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# 0.04 - Footnote support, PML output, correct charset in html, support more PML tags
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# - Feature change, dump out PML file
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# - Added supprt for footnote tags. NOTE footnote ids appear to be bad (not usable)
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# in some pdb files :-( due to the same id being used multiple times
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# - Added correct charset encoding (pml is based on cp1252)
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# - Added logging support.
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# 0.05 - Improved type 272 support for sidebars, links, chapters, metainfo, etc
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# 0.06 - Merge of 0.04 and 0.05. Improved HTML output
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# Placed images in subfolder, so that it's possible to just
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# drop the book.pml file onto DropBook to make an unencrypted
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# copy of the eReader file.
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# Using that with Calibre works a lot better than the HTML
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# conversion in this code.
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# 0.07 - Further Improved type 272 support for sidebars with all earlier fixes
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# 0.08 - fixed typos, removed extraneous things
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# 0.09 - fixed typos in first_pages to first_page to again support older formats
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# 0.10 - minor cleanups
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# 0.11 - fixups for using correct xml for footnotes and sidebars for use with Dropbook
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# 0.12 - Fix added to prevent lowercasing of image names when the pml code itself uses a different case in the link name.
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# 0.13 - change to unbuffered stdout for use with gui front ends
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# 0.14 - contributed enhancement to support --make-pmlz switch
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# 0.15 - enabled high-ascii to pml character encoding. DropBook now works on Mac.
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__version__='0.15'
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# Import Psyco if available
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try:
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# Dumb speed hack 1
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# http://psyco.sourceforge.net
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import psyco
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psyco.full()
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pass
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except ImportError:
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pass
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try:
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# Dumb speed hack 2
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# All map() calls converted to list comprehension (some use zip)
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# override zip with izip - saves memory and in rough testing
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# appears to be faster zip() is only used in the converted map() calls
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from itertools import izip as zip
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except ImportError:
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pass
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class Unbuffered:
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def __init__(self, stream):
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self.stream = stream
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def write(self, data):
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self.stream.write(data)
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self.stream.flush()
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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import sys
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sys.stdout=Unbuffered(sys.stdout)
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import struct, binascii, getopt, zlib, os, os.path, urllib, tempfile
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try:
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from hashlib import sha1
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except ImportError:
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# older Python release
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import sha
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sha1 = lambda s: sha.new(s)
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import cgi
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import logging
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logging.basicConfig()
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#logging.basicConfig(level=logging.DEBUG)
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ECB = 0
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CBC = 1
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class Des(object):
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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 [block[x] for x in 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 = [x ^ y for x,y in zip(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 = [x ^ y for x, y in zip(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 = [x ^ y for x, y in zip(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 = [x ^ y for x, y in zip(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(object):
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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:
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if c in "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.-":
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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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def deXOR(text, sp, table):
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r=''
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j = sp
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for i in xrange(len(text)):
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r += chr(ord(table[j]) ^ ord(text[i]))
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j = j + 1
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if j == len(table):
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j = 0
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return r
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class EreaderProcessor(object):
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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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self.version = version
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logging.info('eReader file format version %s', version)
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if version != 272 and version != 260 and version != 259:
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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)
|
|
|
|
def fixUsername(s):
|
|
r = ''
|
|
for c in s.lower():
|
|
if (c >= 'a' and c <= 'z' or c >= '0' and c <= '9'):
|
|
r += c
|
|
return r
|
|
|
|
user_key = struct.pack('>LL', binascii.crc32(fixUsername(username)) & 0xffffffff, binascii.crc32(creditcard[-8:])& 0xffffffff)
|
|
drm_sub_version = struct.unpack('>H', r[0:2])[0]
|
|
self.num_text_pages = struct.unpack('>H', r[2:4])[0] - 1
|
|
self.num_image_pages = struct.unpack('>H', r[26:26+2])[0]
|
|
self.first_image_page = struct.unpack('>H', r[24:24+2])[0]
|
|
if self.version == 272:
|
|
self.num_footnote_pages = struct.unpack('>H', r[46:46+2])[0]
|
|
self.first_footnote_page = struct.unpack('>H', r[44:44+2])[0]
|
|
self.num_sidebar_pages = struct.unpack('>H', r[38:38+2])[0]
|
|
self.first_sidebar_page = struct.unpack('>H', r[36:36+2])[0]
|
|
# self.num_bookinfo_pages = struct.unpack('>H', r[34:34+2])[0]
|
|
# self.first_bookinfo_page = struct.unpack('>H', r[32:32+2])[0]
|
|
# self.num_chapter_pages = struct.unpack('>H', r[22:22+2])[0]
|
|
# self.first_chapter_page = struct.unpack('>H', r[20:20+2])[0]
|
|
# self.num_link_pages = struct.unpack('>H', r[30:30+2])[0]
|
|
# self.first_link_page = struct.unpack('>H', r[28:28+2])[0]
|
|
# self.num_xtextsize_pages = struct.unpack('>H', r[54:54+2])[0]
|
|
# self.first_xtextsize_page = struct.unpack('>H', r[52:52+2])[0]
|
|
|
|
# **before** data record 1 was decrypted and unshuffled, it contained data
|
|
# to create an XOR table and which is used to fix footnote record 0, link records, chapter records, etc
|
|
self.xortable_offset = struct.unpack('>H', r[40:40+2])[0]
|
|
self.xortable_size = struct.unpack('>H', r[42:42+2])[0]
|
|
self.xortable = self.data[self.xortable_offset:self.xortable_offset + self.xortable_size]
|
|
else:
|
|
self.num_footnote_pages = 0
|
|
self.num_sidebar_pages = 0
|
|
self.first_footnote_page = -1
|
|
self.first_sidebar_page = -1
|
|
# self.num_bookinfo_pages = 0
|
|
# self.num_chapter_pages = 0
|
|
# self.num_link_pages = 0
|
|
# self.num_xtextsize_pages = 0
|
|
# self.first_bookinfo_page = -1
|
|
# self.first_chapter_page = -1
|
|
# self.first_link_page = -1
|
|
# self.first_xtextsize_page = -1
|
|
|
|
logging.debug('self.num_text_pages %d', self.num_text_pages)
|
|
logging.debug('self.num_footnote_pages %d, self.first_footnote_page %d', self.num_footnote_pages , self.first_footnote_page)
|
|
logging.debug('self.num_sidebar_pages %d, self.first_sidebar_page %d', self.num_sidebar_pages , self.first_sidebar_page)
|
|
self.flags = struct.unpack('>L', r[4:8])[0]
|
|
reqd_flags = (1<<9) | (1<<7) | (1<<10)
|
|
if (self.flags & reqd_flags) != reqd_flags:
|
|
print "Flags: 0x%X" % self.flags
|
|
raise ValueError('incompatible eReader file')
|
|
des = Des(fixKey(user_key))
|
|
if version == 259:
|
|
if drm_sub_version != 7:
|
|
raise ValueError('incorrect eReader version %d (error 3)' % drm_sub_version)
|
|
encrypted_key_sha = r[44:44+20]
|
|
encrypted_key = r[64:64+8]
|
|
elif version == 260:
|
|
if drm_sub_version != 13:
|
|
raise ValueError('incorrect eReader version %d (error 3)' % drm_sub_version)
|
|
encrypted_key = r[44:44+8]
|
|
encrypted_key_sha = r[52:52+20]
|
|
elif version == 272:
|
|
encrypted_key = r[172:172+8]
|
|
encrypted_key_sha = r[56:56+20]
|
|
self.content_key = des.decrypt(encrypted_key)
|
|
if sha1(self.content_key).digest() != encrypted_key_sha:
|
|
raise ValueError('Incorrect Name and/or Credit Card')
|
|
|
|
def getNumImages(self):
|
|
return self.num_image_pages
|
|
|
|
def getImage(self, i):
|
|
sect = self.section_reader(self.first_image_page + i)
|
|
name = sect[4:4+32].strip('\0')
|
|
data = sect[62:]
|
|
return sanitizeFileName(name), data
|
|
|
|
|
|
# def getChapterNamePMLOffsetData(self):
|
|
# cv = ''
|
|
# if self.num_chapter_pages > 0:
|
|
# for i in xrange(self.num_chapter_pages):
|
|
# chaps = self.section_reader(self.first_chapter_page + i)
|
|
# j = i % self.xortable_size
|
|
# offname = deXOR(chaps, j, self.xortable)
|
|
# offset = struct.unpack('>L', offname[0:4])[0]
|
|
# name = offname[4:].strip('\0')
|
|
# cv += '%d|%s\n' % (offset, name)
|
|
# return cv
|
|
|
|
# def getLinkNamePMLOffsetData(self):
|
|
# lv = ''
|
|
# if self.num_link_pages > 0:
|
|
# for i in xrange(self.num_link_pages):
|
|
# links = self.section_reader(self.first_link_page + i)
|
|
# j = i % self.xortable_size
|
|
# offname = deXOR(links, j, self.xortable)
|
|
# offset = struct.unpack('>L', offname[0:4])[0]
|
|
# name = offname[4:].strip('\0')
|
|
# lv += '%d|%s\n' % (offset, name)
|
|
# return lv
|
|
|
|
# def getExpandedTextSizesData(self):
|
|
# ts = ''
|
|
# if self.num_xtextsize_pages > 0:
|
|
# tsize = deXOR(self.section_reader(self.first_xtextsize_page), 0, self.xortable)
|
|
# for i in xrange(self.num_text_pages):
|
|
# xsize = struct.unpack('>H', tsize[0:2])[0]
|
|
# ts += "%d\n" % xsize
|
|
# tsize = tsize[2:]
|
|
# return ts
|
|
|
|
# def getBookInfo(self):
|
|
# bkinfo = ''
|
|
# if self.num_bookinfo_pages > 0:
|
|
# info = self.section_reader(self.first_bookinfo_page)
|
|
# bkinfo = deXOR(info, 0, self.xortable)
|
|
# bkinfo = bkinfo.replace('\0','|')
|
|
# bkinfo += '\n'
|
|
# return bkinfo
|
|
|
|
def getText(self):
|
|
des = Des(fixKey(self.content_key))
|
|
r = ''
|
|
for i in xrange(self.num_text_pages):
|
|
logging.debug('get page %d', i)
|
|
r += zlib.decompress(des.decrypt(self.section_reader(1 + i)))
|
|
|
|
# now handle footnotes pages
|
|
if self.num_footnote_pages > 0:
|
|
r += '\n'
|
|
# the record 0 of the footnote section must pass through the Xor Table to make it useful
|
|
sect = self.section_reader(self.first_footnote_page)
|
|
fnote_ids = deXOR(sect, 0, self.xortable)
|
|
# the remaining records of the footnote sections need to be decoded with the content_key and zlib inflated
|
|
des = Des(fixKey(self.content_key))
|
|
for i in xrange(1,self.num_footnote_pages):
|
|
logging.debug('get footnotepage %d', i)
|
|
id_len = ord(fnote_ids[2])
|
|
id = fnote_ids[3:3+id_len]
|
|
fmarker = '<footnote id="%s">\n' % id
|
|
fmarker += zlib.decompress(des.decrypt(self.section_reader(self.first_footnote_page + i)))
|
|
fmarker += '\n</footnote>\n'
|
|
r += fmarker
|
|
fnote_ids = fnote_ids[id_len+4:]
|
|
|
|
# now handle sidebar pages
|
|
if self.num_sidebar_pages > 0:
|
|
r += '\n'
|
|
# the record 0 of the sidebar section must pass through the Xor Table to make it useful
|
|
sect = self.section_reader(self.first_sidebar_page)
|
|
sbar_ids = deXOR(sect, 0, self.xortable)
|
|
# the remaining records of the sidebar sections need to be decoded with the content_key and zlib inflated
|
|
des = Des(fixKey(self.content_key))
|
|
for i in xrange(1,self.num_sidebar_pages):
|
|
id_len = ord(sbar_ids[2])
|
|
id = sbar_ids[3:3+id_len]
|
|
smarker = '<sidebar id="%s">\n' % id
|
|
smarker += zlib.decompress(des.decrypt(self.section_reader(self.first_footnote_page + i)))
|
|
smarker += '\n</sidebar>\n'
|
|
r += smarker
|
|
sbar_ids = sbar_ids[id_len+4:]
|
|
|
|
return r
|
|
|
|
def cleanPML(pml):
|
|
# Convert special characters to proper PML code. High ASCII start at (\x80, \a128) and go up to (\xff, \a255)
|
|
pml2 = pml
|
|
for k in xrange(128,256):
|
|
badChar = chr(k)
|
|
pml2 = pml2.replace(badChar, '\\a%03d' % k)
|
|
return pml2
|
|
|
|
def convertEreaderToPml(infile, name, cc, outdir):
|
|
if not os.path.exists(outdir):
|
|
os.makedirs(outdir)
|
|
|
|
print " Decoding File"
|
|
sect = Sectionizer(infile, 'PNRdPPrs')
|
|
er = EreaderProcessor(sect.loadSection, name, cc)
|
|
|
|
if er.getNumImages() > 0:
|
|
print " Extracting images"
|
|
imagedir = bookname + '_img/'
|
|
imagedirpath = os.path.join(outdir,imagedir)
|
|
if not os.path.exists(imagedirpath):
|
|
os.makedirs(imagedirpath)
|
|
for i in xrange(er.getNumImages()):
|
|
name, contents = er.getImage(i)
|
|
file(os.path.join(imagedirpath, name), 'wb').write(contents)
|
|
|
|
print " Extracting pml"
|
|
pml_string = er.getText()
|
|
pmlfilename = bookname + ".pml"
|
|
file(os.path.join(outdir, pmlfilename),'wb').write(cleanPML(pml_string))
|
|
|
|
# bkinfo = er.getBookInfo()
|
|
# if bkinfo != '':
|
|
# print " Extracting book meta information"
|
|
# file(os.path.join(outdir, 'bookinfo.txt'),'wb').write(bkinfo)
|
|
|
|
|
|
def usage():
|
|
print "Converts DRMed eReader books to PML Source"
|
|
print "Usage:"
|
|
print " erdr2pml [options] infile.pdb [outdir] \"your name\" credit_card_number "
|
|
print " "
|
|
print "Options: "
|
|
print " -h prints this message"
|
|
print " --make-pmlz create PMLZ instead of using output directory"
|
|
print " "
|
|
print "Note:"
|
|
print " if ommitted, outdir defaults based on 'infile.pdb'"
|
|
print " It's enough to enter the last 8 digits of the credit card number"
|
|
return
|
|
|
|
def main(argv=None):
|
|
global bookname
|
|
try:
|
|
opts, args = getopt.getopt(sys.argv[1:], "h", ["make-pmlz"])
|
|
except getopt.GetoptError, err:
|
|
print str(err)
|
|
usage()
|
|
return 1
|
|
make_pmlz = False
|
|
zipname = None
|
|
for o, a in opts:
|
|
if o == "-h":
|
|
usage()
|
|
return 0
|
|
elif o == "--make-pmlz":
|
|
make_pmlz = True
|
|
zipname = ''
|
|
|
|
print "eRdr2Pml v%s. Copyright (c) 2009 The Dark Reverser" % __version__
|
|
|
|
if len(args)!=3 and len(args)!=4:
|
|
usage()
|
|
return 1
|
|
else:
|
|
if len(args)==3:
|
|
infile, name, cc = args[0], args[1], args[2]
|
|
outdir = infile[:-4] + '_Source'
|
|
elif len(args)==4:
|
|
infile, outdir, name, cc = args[0], args[1], args[2], args[3]
|
|
|
|
if make_pmlz :
|
|
# ignore specified outdir, use tempdir instead
|
|
outdir = tempfile.mkdtemp()
|
|
|
|
bookname = os.path.splitext(os.path.basename(infile))[0]
|
|
|
|
try:
|
|
print "Processing..."
|
|
import time
|
|
start_time = time.time()
|
|
convertEreaderToPml(infile, name, cc, outdir)
|
|
|
|
if make_pmlz :
|
|
import zipfile
|
|
import shutil
|
|
print " Creating PMLZ file"
|
|
zipname = infile[:-4] + '.pmlz'
|
|
myZipFile = zipfile.ZipFile(zipname,'w',zipfile.ZIP_STORED, False)
|
|
list = os.listdir(outdir)
|
|
for file in list:
|
|
localname = file
|
|
filePath = os.path.join(outdir,file)
|
|
if os.path.isfile(filePath):
|
|
myZipFile.write(filePath, localname)
|
|
elif os.path.isdir(filePath):
|
|
imageList = os.listdir(filePath)
|
|
localimgdir = os.path.basename(filePath)
|
|
for image in imageList:
|
|
localname = os.path.join(localimgdir,image)
|
|
imagePath = os.path.join(filePath,image)
|
|
if os.path.isfile(imagePath):
|
|
myZipFile.write(imagePath, localname)
|
|
myZipFile.close()
|
|
# remove temporary directory
|
|
shutil.rmtree(outdir)
|
|
|
|
end_time = time.time()
|
|
search_time = end_time - start_time
|
|
print 'elapsed time: %.2f seconds' % (search_time, )
|
|
if make_pmlz :
|
|
print 'output is %s' % zipname
|
|
else :
|
|
print 'output in %s' % outdir
|
|
print "done"
|
|
except ValueError, e:
|
|
print "Error: %s" % e
|
|
return 1
|
|
return 0
|
|
|
|
if __name__ == "__main__":
|
|
#import cProfile
|
|
#command = """sys.exit(main())"""
|
|
#cProfile.runctx( command, globals(), locals(), filename="cprofile.profile" )
|
|
|
|
sys.exit(main())
|