Apprentice Alf
13 years ago
parent
2bedd75005
commit
ac9cdb1e98
Binary file not shown.
@ -1,216 +0,0 @@
|
||||
#!/usr/bin/env python
|
||||
|
||||
# This is a simple tool to identify all Amazon Topaz ebooks in a specific directory.
|
||||
# There always seems to be confusion since Topaz books downloaded to K4PC/Mac can have
|
||||
# almost any extension (.azw, .azw1, .prc, tpz). While the .azw1 and .tpz extensions
|
||||
# are fairly easy to indentify, the others are not (without opening the files in an editor).
|
||||
|
||||
# To run the tool with the GUI frontend, just double-click on the 'FindTopazFiles.pyw' file
|
||||
# and select the folder where all of the ebooks in question are located. Then click 'Search'.
|
||||
# The program will list the file names of the ebooks that are indentified as being Topaz.
|
||||
# You can then isolate those books and use the Topaz tools to decrypt and convert them.
|
||||
|
||||
# You can also run the script from a command line... supplying the folder to search
|
||||
# as a parameter: python FindTopazEbooks.pyw "C:\My Folder" (change appropriately for
|
||||
# your particular O.S.)
|
||||
|
||||
# ** NOTE: This program does NOT decrypt or modify Topaz files in any way. It simply identifies them.
|
||||
|
||||
# PLEASE DO NOT PIRATE EBOOKS!
|
||||
|
||||
# We want all authors and publishers, and eBook stores to live
|
||||
# long and prosperous lives but at the same time we just want to
|
||||
# be able to read OUR books on whatever device we want and to keep
|
||||
# readable for a long, long time
|
||||
|
||||
# This borrows very heavily from works by CMBDTC, IHeartCabbages, skindle,
|
||||
# unswindle, DarkReverser, ApprenticeAlf, DiapDealer, some_updates
|
||||
# and many many others
|
||||
|
||||
# Revision history:
|
||||
# 1 - Initial release.
|
||||
|
||||
from __future__ import with_statement
|
||||
|
||||
__license__ = 'GPL v3'
|
||||
|
||||
import sys
|
||||
import os
|
||||
import re
|
||||
import shutil
|
||||
import Tkinter
|
||||
import Tkconstants
|
||||
import tkFileDialog
|
||||
import tkMessageBox
|
||||
|
||||
|
||||
class ScrolledText(Tkinter.Text):
|
||||
def __init__(self, master=None, **kw):
|
||||
self.frame = Tkinter.Frame(master)
|
||||
self.vbar = Tkinter.Scrollbar(self.frame)
|
||||
self.vbar.pack(side=Tkconstants.RIGHT, fill=Tkconstants.Y)
|
||||
kw.update({'yscrollcommand': self.vbar.set})
|
||||
Tkinter.Text.__init__(self, self.frame, **kw)
|
||||
self.pack(side=Tkconstants.LEFT, fill=Tkconstants.BOTH, expand=True)
|
||||
self.vbar['command'] = self.yview
|
||||
# Copy geometry methods of self.frame without overriding Text
|
||||
# methods = hack!
|
||||
text_meths = vars(Tkinter.Text).keys()
|
||||
methods = vars(Tkinter.Pack).keys() + vars(Tkinter.Grid).keys() + vars(Tkinter.Place).keys()
|
||||
methods = set(methods).difference(text_meths)
|
||||
for m in methods:
|
||||
if m[0] != '_' and m != 'config' and m != 'configure':
|
||||
setattr(self, m, getattr(self.frame, m))
|
||||
|
||||
def __str__(self):
|
||||
return str(self.frame)
|
||||
|
||||
|
||||
def cli_main(argv=sys.argv, obj=None):
|
||||
progname = os.path.basename(argv[0])
|
||||
if len(argv) != 2:
|
||||
print "usage: %s DIRECTORY" % (progname,)
|
||||
return 1
|
||||
|
||||
if obj == None:
|
||||
print "\nTopaz search results:\n"
|
||||
else:
|
||||
obj.stext.insert(Tkconstants.END,"Topaz search results:\n\n")
|
||||
|
||||
inpath = argv[1]
|
||||
files = os.listdir(inpath)
|
||||
filefilter = re.compile("(\.azw$)|(\.azw1$)|(\.prc$)|(\.tpz$)", re.IGNORECASE)
|
||||
files = filter(filefilter.search, files)
|
||||
|
||||
if files:
|
||||
topazcount = 0
|
||||
totalcount = 0
|
||||
for filename in files:
|
||||
with open(os.path.join(inpath, filename), 'rb') as f:
|
||||
try:
|
||||
if f.read().startswith('TPZ'):
|
||||
f.close()
|
||||
basename, extension = os.path.splitext(filename)
|
||||
if obj == None:
|
||||
print " %s is a Topaz formatted ebook." % filename
|
||||
"""
|
||||
if extension == '.azw' or extension == '.prc':
|
||||
print " renaming to %s" % (basename + '.tpz')
|
||||
shutil.move(os.path.join(inpath, filename),
|
||||
os.path.join(inpath, basename + '.tpz'))
|
||||
"""
|
||||
else:
|
||||
msg1 = " %s is a Topaz formatted ebook.\n" % filename
|
||||
obj.stext.insert(Tkconstants.END,msg1)
|
||||
"""
|
||||
if extension == '.azw' or extension == '.prc':
|
||||
msg2 = " renaming to %s\n" % (basename + '.tpz')
|
||||
obj.stext.insert(Tkconstants.END,msg2)
|
||||
shutil.move(os.path.join(inpath, filename),
|
||||
os.path.join(inpath, basename + '.tpz'))
|
||||
"""
|
||||
topazcount += 1
|
||||
except:
|
||||
if obj == None:
|
||||
print " Error reading %s." % filename
|
||||
else:
|
||||
msg = " Error reading or %s.\n" % filename
|
||||
obj.stext.insert(Tkconstants.END,msg)
|
||||
pass
|
||||
totalcount += 1
|
||||
if topazcount == 0:
|
||||
if obj == None:
|
||||
print "\nNo Topaz books found in %s." % inpath
|
||||
else:
|
||||
msg = "\nNo Topaz books found in %s.\n\n" % inpath
|
||||
obj.stext.insert(Tkconstants.END,msg)
|
||||
else:
|
||||
if obj == None:
|
||||
print "\n%i Topaz books found in %s\n%i total books checked.\n" % (topazcount, inpath, totalcount)
|
||||
else:
|
||||
msg = "\n%i Topaz books found in %s\n%i total books checked.\n\n" %(topazcount, inpath, totalcount)
|
||||
obj.stext.insert(Tkconstants.END,msg)
|
||||
else:
|
||||
if obj == None:
|
||||
print "No typical Topaz file extensions found in %s.\n" % inpath
|
||||
else:
|
||||
msg = "No typical Topaz file extensions found in %s.\n\n" % inpath
|
||||
obj.stext.insert(Tkconstants.END,msg)
|
||||
|
||||
return 0
|
||||
|
||||
|
||||
class DecryptionDialog(Tkinter.Frame):
|
||||
def __init__(self, root):
|
||||
Tkinter.Frame.__init__(self, root, border=5)
|
||||
ltext='Search a directory for Topaz eBooks\n'
|
||||
self.status = Tkinter.Label(self, text=ltext)
|
||||
self.status.pack(fill=Tkconstants.X, expand=1)
|
||||
body = Tkinter.Frame(self)
|
||||
body.pack(fill=Tkconstants.X, expand=1)
|
||||
sticky = Tkconstants.E + Tkconstants.W
|
||||
body.grid_columnconfigure(1, weight=2)
|
||||
Tkinter.Label(body, text='Directory to Search').grid(row=1)
|
||||
self.inpath = Tkinter.Entry(body, width=30)
|
||||
self.inpath.grid(row=1, column=1, sticky=sticky)
|
||||
button = Tkinter.Button(body, text="...", command=self.get_inpath)
|
||||
button.grid(row=1, column=2)
|
||||
msg1 = 'Topaz search results \n\n'
|
||||
self.stext = ScrolledText(body, bd=5, relief=Tkconstants.RIDGE,
|
||||
height=15, width=60, wrap=Tkconstants.WORD)
|
||||
self.stext.grid(row=4, column=0, columnspan=2,sticky=sticky)
|
||||
#self.stext.insert(Tkconstants.END,msg1)
|
||||
buttons = Tkinter.Frame(self)
|
||||
buttons.pack()
|
||||
|
||||
|
||||
self.botton = Tkinter.Button(
|
||||
buttons, text="Search", width=10, command=self.search)
|
||||
self.botton.pack(side=Tkconstants.LEFT)
|
||||
Tkinter.Frame(buttons, width=10).pack(side=Tkconstants.LEFT)
|
||||
self.button = Tkinter.Button(
|
||||
buttons, text="Quit", width=10, command=self.quit)
|
||||
self.button.pack(side=Tkconstants.RIGHT)
|
||||
|
||||
def get_inpath(self):
|
||||
cwd = os.getcwdu()
|
||||
cwd = cwd.encode('utf-8')
|
||||
inpath = tkFileDialog.askdirectory(
|
||||
parent=None, title='Directory to search',
|
||||
initialdir=cwd, initialfile=None)
|
||||
if inpath:
|
||||
inpath = os.path.normpath(inpath)
|
||||
self.inpath.delete(0, Tkconstants.END)
|
||||
self.inpath.insert(0, inpath)
|
||||
return
|
||||
|
||||
|
||||
def search(self):
|
||||
inpath = self.inpath.get()
|
||||
if not inpath or not os.path.exists(inpath):
|
||||
self.status['text'] = 'Specified directory does not exist'
|
||||
return
|
||||
argv = [sys.argv[0], inpath]
|
||||
self.status['text'] = 'Searching...'
|
||||
self.botton.configure(state='disabled')
|
||||
cli_main(argv, self)
|
||||
self.status['text'] = 'Search a directory for Topaz files'
|
||||
self.botton.configure(state='normal')
|
||||
|
||||
return
|
||||
|
||||
|
||||
def gui_main():
|
||||
root = Tkinter.Tk()
|
||||
root.title('Topaz eBook Finder')
|
||||
root.resizable(True, False)
|
||||
root.minsize(370, 0)
|
||||
DecryptionDialog(root).pack(fill=Tkconstants.X, expand=1)
|
||||
root.mainloop()
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
if len(sys.argv) > 1:
|
||||
sys.exit(cli_main())
|
||||
sys.exit(gui_main())
|
||||
@ -1,406 +0,0 @@
|
||||
#!/usr/bin/python
|
||||
#
|
||||
# This is a python script. You need a Python interpreter to run it.
|
||||
# For example, ActiveState Python, which exists for windows.
|
||||
#
|
||||
# Changelog
|
||||
# 0.01 - Initial version
|
||||
# 0.02 - Huffdic compressed books were not properly decrypted
|
||||
# 0.03 - Wasn't checking MOBI header length
|
||||
# 0.04 - Wasn't sanity checking size of data record
|
||||
# 0.05 - It seems that the extra data flags take two bytes not four
|
||||
# 0.06 - And that low bit does mean something after all :-)
|
||||
# 0.07 - The extra data flags aren't present in MOBI header < 0xE8 in size
|
||||
# 0.08 - ...and also not in Mobi header version < 6
|
||||
# 0.09 - ...but they are there with Mobi header version 6, header size 0xE4!
|
||||
# 0.10 - Outputs unencrypted files as-is, so that when run as a Calibre
|
||||
# import filter it works when importing unencrypted files.
|
||||
# Also now handles encrypted files that don't need a specific PID.
|
||||
# 0.11 - use autoflushed stdout and proper return values
|
||||
# 0.12 - Fix for problems with metadata import as Calibre plugin, report errors
|
||||
# 0.13 - Formatting fixes: retabbed file, removed trailing whitespace
|
||||
# and extra blank lines, converted CR/LF pairs at ends of each line,
|
||||
# and other cosmetic fixes.
|
||||
# 0.14 - Working out when the extra data flags are present has been problematic
|
||||
# Versions 7 through 9 have tried to tweak the conditions, but have been
|
||||
# only partially successful. Closer examination of lots of sample
|
||||
# files reveals that a confusion has arisen because trailing data entries
|
||||
# are not encrypted, but it turns out that the multibyte entries
|
||||
# in utf8 file are encrypted. (Although neither kind gets compressed.)
|
||||
# This knowledge leads to a simplification of the test for the
|
||||
# trailing data byte flags - version 5 and higher AND header size >= 0xE4.
|
||||
# 0.15 - Now outputs 'heartbeat', and is also quicker for long files.
|
||||
# 0.16 - And reverts to 'done' not 'done.' at the end for unswindle compatibility.
|
||||
# 0.17 - added modifications to support its use as an imported python module
|
||||
# both inside calibre and also in other places (ie K4DeDRM tools)
|
||||
# 0.17a- disabled the standalone plugin feature since a plugin can not import
|
||||
# a plugin
|
||||
# 0.18 - It seems that multibyte entries aren't encrypted in a v7 file...
|
||||
# Removed the disabled Calibre plug-in code
|
||||
# Permit use of 8-digit PIDs
|
||||
# 0.19 - It seems that multibyte entries aren't encrypted in a v6 file either.
|
||||
# 0.20 - Correction: It seems that multibyte entries are encrypted in a v6 file.
|
||||
# 0.21 - Added support for multiple pids
|
||||
# 0.22 - revised structure to hold MobiBook as a class to allow an extended interface
|
||||
# 0.23 - fixed problem with older files with no EXTH section
|
||||
# 0.24 - add support for type 1 encryption and 'TEXtREAd' books as well
|
||||
# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
|
||||
# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
|
||||
|
||||
__version__ = '0.26'
|
||||
|
||||
import sys
|
||||
|
||||
class Unbuffered:
|
||||
def __init__(self, stream):
|
||||
self.stream = stream
|
||||
def write(self, data):
|
||||
self.stream.write(data)
|
||||
self.stream.flush()
|
||||
def __getattr__(self, attr):
|
||||
return getattr(self.stream, attr)
|
||||
sys.stdout=Unbuffered(sys.stdout)
|
||||
|
||||
import os
|
||||
import struct
|
||||
import binascii
|
||||
|
||||
class DrmException(Exception):
|
||||
pass
|
||||
|
||||
|
||||
#
|
||||
# MobiBook Utility Routines
|
||||
#
|
||||
|
||||
# Implementation of Pukall Cipher 1
|
||||
def PC1(key, src, decryption=True):
|
||||
sum1 = 0;
|
||||
sum2 = 0;
|
||||
keyXorVal = 0;
|
||||
if len(key)!=16:
|
||||
print "Bad key length!"
|
||||
return None
|
||||
wkey = []
|
||||
for i in xrange(8):
|
||||
wkey.append(ord(key[i*2])<<8 | ord(key[i*2+1]))
|
||||
dst = ""
|
||||
for i in xrange(len(src)):
|
||||
temp1 = 0;
|
||||
byteXorVal = 0;
|
||||
for j in xrange(8):
|
||||
temp1 ^= wkey[j]
|
||||
sum2 = (sum2+j)*20021 + sum1
|
||||
sum1 = (temp1*346)&0xFFFF
|
||||
sum2 = (sum2+sum1)&0xFFFF
|
||||
temp1 = (temp1*20021+1)&0xFFFF
|
||||
byteXorVal ^= temp1 ^ sum2
|
||||
curByte = ord(src[i])
|
||||
if not decryption:
|
||||
keyXorVal = curByte * 257;
|
||||
curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF
|
||||
if decryption:
|
||||
keyXorVal = curByte * 257;
|
||||
for j in xrange(8):
|
||||
wkey[j] ^= keyXorVal;
|
||||
dst+=chr(curByte)
|
||||
return dst
|
||||
|
||||
def checksumPid(s):
|
||||
letters = "ABCDEFGHIJKLMNPQRSTUVWXYZ123456789"
|
||||
crc = (~binascii.crc32(s,-1))&0xFFFFFFFF
|
||||
crc = crc ^ (crc >> 16)
|
||||
res = s
|
||||
l = len(letters)
|
||||
for i in (0,1):
|
||||
b = crc & 0xff
|
||||
pos = (b // l) ^ (b % l)
|
||||
res += letters[pos%l]
|
||||
crc >>= 8
|
||||
return res
|
||||
|
||||
def getSizeOfTrailingDataEntries(ptr, size, flags):
|
||||
def getSizeOfTrailingDataEntry(ptr, size):
|
||||
bitpos, result = 0, 0
|
||||
if size <= 0:
|
||||
return result
|
||||
while True:
|
||||
v = ord(ptr[size-1])
|
||||
result |= (v & 0x7F) << bitpos
|
||||
bitpos += 7
|
||||
size -= 1
|
||||
if (v & 0x80) != 0 or (bitpos >= 28) or (size == 0):
|
||||
return result
|
||||
num = 0
|
||||
testflags = flags >> 1
|
||||
while testflags:
|
||||
if testflags & 1:
|
||||
num += getSizeOfTrailingDataEntry(ptr, size - num)
|
||||
testflags >>= 1
|
||||
# Check the low bit to see if there's multibyte data present.
|
||||
# if multibyte data is included in the encryped data, we'll
|
||||
# have already cleared this flag.
|
||||
if flags & 1:
|
||||
num += (ord(ptr[size - num - 1]) & 0x3) + 1
|
||||
return num
|
||||
|
||||
|
||||
|
||||
class MobiBook:
|
||||
def loadSection(self, section):
|
||||
if (section + 1 == self.num_sections):
|
||||
endoff = len(self.data_file)
|
||||
else:
|
||||
endoff = self.sections[section + 1][0]
|
||||
off = self.sections[section][0]
|
||||
return self.data_file[off:endoff]
|
||||
|
||||
def __init__(self, infile):
|
||||
# initial sanity check on file
|
||||
self.data_file = file(infile, 'rb').read()
|
||||
self.header = self.data_file[0:78]
|
||||
if self.header[0x3C:0x3C+8] != 'BOOKMOBI' and self.header[0x3C:0x3C+8] != 'TEXtREAd':
|
||||
raise DrmException("invalid file format")
|
||||
self.magic = self.header[0x3C:0x3C+8]
|
||||
self.crypto_type = -1
|
||||
|
||||
# build up section offset and flag info
|
||||
self.num_sections, = struct.unpack('>H', self.header[76:78])
|
||||
self.sections = []
|
||||
for i in xrange(self.num_sections):
|
||||
offset, a1,a2,a3,a4 = struct.unpack('>LBBBB', self.data_file[78+i*8:78+i*8+8])
|
||||
flags, val = a1, a2<<16|a3<<8|a4
|
||||
self.sections.append( (offset, flags, val) )
|
||||
|
||||
# parse information from section 0
|
||||
self.sect = self.loadSection(0)
|
||||
self.records, = struct.unpack('>H', self.sect[0x8:0x8+2])
|
||||
|
||||
if self.magic == 'TEXtREAd':
|
||||
print "Book has format: ", self.magic
|
||||
self.extra_data_flags = 0
|
||||
self.mobi_length = 0
|
||||
self.mobi_version = -1
|
||||
self.meta_array = {}
|
||||
return
|
||||
self.mobi_length, = struct.unpack('>L',self.sect[0x14:0x18])
|
||||
self.mobi_version, = struct.unpack('>L',self.sect[0x68:0x6C])
|
||||
print "MOBI header version = %d, length = %d" %(self.mobi_version, self.mobi_length)
|
||||
self.extra_data_flags = 0
|
||||
if (self.mobi_length >= 0xE4) and (self.mobi_version >= 5):
|
||||
self.extra_data_flags, = struct.unpack('>H', self.sect[0xF2:0xF4])
|
||||
print "Extra Data Flags = %d" % self.extra_data_flags
|
||||
if self.mobi_version < 7:
|
||||
# multibyte utf8 data is included in the encryption for mobi_version 6 and below
|
||||
# so clear that byte so that we leave it to be decrypted.
|
||||
self.extra_data_flags &= 0xFFFE
|
||||
|
||||
# if exth region exists parse it for metadata array
|
||||
self.meta_array = {}
|
||||
try:
|
||||
exth_flag, = struct.unpack('>L', self.sect[0x80:0x84])
|
||||
exth = 'NONE'
|
||||
if exth_flag & 0x40:
|
||||
exth = self.sect[16 + self.mobi_length:]
|
||||
if (len(exth) >= 4) and (exth[:4] == 'EXTH'):
|
||||
nitems, = struct.unpack('>I', exth[8:12])
|
||||
pos = 12
|
||||
for i in xrange(nitems):
|
||||
type, size = struct.unpack('>II', exth[pos: pos + 8])
|
||||
# reset the text to speech flag and clipping limit, if present
|
||||
if type == 401 and size == 9:
|
||||
# set clipping limit to 100%
|
||||
self.patchSection(0, "\144", 16 + self.mobi_length + pos + 8)
|
||||
content = "\144"
|
||||
elif type == 404 and size == 9:
|
||||
# make sure text to speech is enabled
|
||||
self.patchSection(0, "\0", 16 + self.mobi_length + pos + 8)
|
||||
content = "\0"
|
||||
else:
|
||||
content = exth[pos + 8: pos + size]
|
||||
#print type, size, content
|
||||
self.meta_array[type] = content
|
||||
pos += size
|
||||
except:
|
||||
self.meta_array = {}
|
||||
pass
|
||||
|
||||
def getBookTitle(self):
|
||||
title = ''
|
||||
if 503 in self.meta_array:
|
||||
title = self.meta_array[503]
|
||||
else :
|
||||
toff, tlen = struct.unpack('>II', self.sect[0x54:0x5c])
|
||||
tend = toff + tlen
|
||||
title = self.sect[toff:tend]
|
||||
if title == '':
|
||||
title = self.header[:32]
|
||||
title = title.split("\0")[0]
|
||||
return title
|
||||
|
||||
def getPIDMetaInfo(self):
|
||||
rec209 = None
|
||||
token = None
|
||||
if 209 in self.meta_array:
|
||||
rec209 = self.meta_array[209]
|
||||
data = rec209
|
||||
# Parse the 209 data to find the the exth record with the token data.
|
||||
# The last character of the 209 data points to the record with the token.
|
||||
# Always 208 from my experience, but I'll leave the logic in case that changes.
|
||||
for i in xrange(len(data)):
|
||||
if ord(data[i]) != 0:
|
||||
if self.meta_array[ord(data[i])] != None:
|
||||
token = self.meta_array[ord(data[i])]
|
||||
return rec209, token
|
||||
|
||||
def patch(self, off, new):
|
||||
self.data_file = self.data_file[:off] + new + self.data_file[off+len(new):]
|
||||
|
||||
def patchSection(self, section, new, in_off = 0):
|
||||
if (section + 1 == self.num_sections):
|
||||
endoff = len(self.data_file)
|
||||
else:
|
||||
endoff = self.sections[section + 1][0]
|
||||
off = self.sections[section][0]
|
||||
assert off + in_off + len(new) <= endoff
|
||||
self.patch(off + in_off, new)
|
||||
|
||||
def parseDRM(self, data, count, pidlist):
|
||||
found_key = None
|
||||
keyvec1 = "\x72\x38\x33\xB0\xB4\xF2\xE3\xCA\xDF\x09\x01\xD6\xE2\xE0\x3F\x96"
|
||||
for pid in pidlist:
|
||||
bigpid = pid.ljust(16,'\0')
|
||||
temp_key = PC1(keyvec1, bigpid, False)
|
||||
temp_key_sum = sum(map(ord,temp_key)) & 0xff
|
||||
found_key = None
|
||||
for i in xrange(count):
|
||||
verification, size, type, cksum, cookie = struct.unpack('>LLLBxxx32s', data[i*0x30:i*0x30+0x30])
|
||||
if cksum == temp_key_sum:
|
||||
cookie = PC1(temp_key, cookie)
|
||||
ver,flags,finalkey,expiry,expiry2 = struct.unpack('>LL16sLL', cookie)
|
||||
if verification == ver and (flags & 0x1F) == 1:
|
||||
found_key = finalkey
|
||||
break
|
||||
if found_key != None:
|
||||
break
|
||||
if not found_key:
|
||||
# Then try the default encoding that doesn't require a PID
|
||||
pid = "00000000"
|
||||
temp_key = keyvec1
|
||||
temp_key_sum = sum(map(ord,temp_key)) & 0xff
|
||||
for i in xrange(count):
|
||||
verification, size, type, cksum, cookie = struct.unpack('>LLLBxxx32s', data[i*0x30:i*0x30+0x30])
|
||||
if cksum == temp_key_sum:
|
||||
cookie = PC1(temp_key, cookie)
|
||||
ver,flags,finalkey,expiry,expiry2 = struct.unpack('>LL16sLL', cookie)
|
||||
if verification == ver:
|
||||
found_key = finalkey
|
||||
break
|
||||
return [found_key,pid]
|
||||
|
||||
def processBook(self, pidlist):
|
||||
crypto_type, = struct.unpack('>H', self.sect[0xC:0xC+2])
|
||||
print 'Crypto Type is: ', crypto_type
|
||||
self.crypto_type = crypto_type
|
||||
if crypto_type == 0:
|
||||
print "This book is not encrypted."
|
||||
return self.data_file
|
||||
if crypto_type != 2 and crypto_type != 1:
|
||||
raise DrmException("Cannot decode unknown Mobipocket encryption type %d" % crypto_type)
|
||||
|
||||
goodpids = []
|
||||
for pid in pidlist:
|
||||
if len(pid)==10:
|
||||
if checksumPid(pid[0:-2]) != pid:
|
||||
print "Warning: PID " + pid + " has incorrect checksum, should have been "+checksumPid(pid[0:-2])
|
||||
goodpids.append(pid[0:-2])
|
||||
elif len(pid)==8:
|
||||
goodpids.append(pid)
|
||||
|
||||
if self.crypto_type == 1:
|
||||
t1_keyvec = "QDCVEPMU675RUBSZ"
|
||||
if self.magic == 'TEXtREAd':
|
||||
bookkey_data = self.sect[0x0E:0x0E+16]
|
||||
elif self.mobi_version < 0:
|
||||
bookkey_data = self.sect[0x90:0x90+16]
|
||||
else:
|
||||
bookkey_data = self.sect[self.mobi_length+16:self.mobi_length+32]
|
||||
pid = "00000000"
|
||||
found_key = PC1(t1_keyvec, bookkey_data)
|
||||
else :
|
||||
# calculate the keys
|
||||
drm_ptr, drm_count, drm_size, drm_flags = struct.unpack('>LLLL', self.sect[0xA8:0xA8+16])
|
||||
if drm_count == 0:
|
||||
raise DrmException("Not yet initialised with PID. Must be opened with Mobipocket Reader first.")
|
||||
found_key, pid = self.parseDRM(self.sect[drm_ptr:drm_ptr+drm_size], drm_count, goodpids)
|
||||
if not found_key:
|
||||
raise DrmException("No key found. Most likely the correct PID has not been given.")
|
||||
# kill the drm keys
|
||||
self.patchSection(0, "\0" * drm_size, drm_ptr)
|
||||
# kill the drm pointers
|
||||
self.patchSection(0, "\xff" * 4 + "\0" * 12, 0xA8)
|
||||
|
||||
if pid=="00000000":
|
||||
print "File has default encryption, no specific PID."
|
||||
else:
|
||||
print "File is encoded with PID "+checksumPid(pid)+"."
|
||||
|
||||
# clear the crypto type
|
||||
self.patchSection(0, "\0" * 2, 0xC)
|
||||
|
||||
# decrypt sections
|
||||
print "Decrypting. Please wait . . .",
|
||||
new_data = self.data_file[:self.sections[1][0]]
|
||||
for i in xrange(1, self.records+1):
|
||||
data = self.loadSection(i)
|
||||
extra_size = getSizeOfTrailingDataEntries(data, len(data), self.extra_data_flags)
|
||||
if i%100 == 0:
|
||||
print ".",
|
||||
# print "record %d, extra_size %d" %(i,extra_size)
|
||||
new_data += PC1(found_key, data[0:len(data) - extra_size])
|
||||
if extra_size > 0:
|
||||
new_data += data[-extra_size:]
|
||||
if self.num_sections > self.records+1:
|
||||
new_data += self.data_file[self.sections[self.records+1][0]:]
|
||||
self.data_file = new_data
|
||||
print "done"
|
||||
return self.data_file
|
||||
|
||||
def getUnencryptedBook(infile,pid):
|
||||
if not os.path.isfile(infile):
|
||||
raise DrmException('Input File Not Found')
|
||||
book = MobiBook(infile)
|
||||
return book.processBook([pid])
|
||||
|
||||
def getUnencryptedBookWithList(infile,pidlist):
|
||||
if not os.path.isfile(infile):
|
||||
raise DrmException('Input File Not Found')
|
||||
book = MobiBook(infile)
|
||||
return book.processBook(pidlist)
|
||||
|
||||
def main(argv=sys.argv):
|
||||
print ('MobiDeDrm v%(__version__)s. '
|
||||
'Copyright 2008-2010 The Dark Reverser.' % globals())
|
||||
if len(argv)<3 or len(argv)>4:
|
||||
print "Removes protection from Mobipocket books"
|
||||
print "Usage:"
|
||||
print " %s <infile> <outfile> [<Comma separated list of PIDs to try>]" % sys.argv[0]
|
||||
return 1
|
||||
else:
|
||||
infile = argv[1]
|
||||
outfile = argv[2]
|
||||
if len(argv) is 4:
|
||||
pidlist = argv[3].split(',')
|
||||
else:
|
||||
pidlist = {}
|
||||
try:
|
||||
stripped_file = getUnencryptedBookWithList(infile, pidlist)
|
||||
file(outfile, 'wb').write(stripped_file)
|
||||
except DrmException, e:
|
||||
print "Error: %s" % e
|
||||
return 1
|
||||
return 0
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
sys.exit(main())
|
||||
Loading…
Reference in New Issue