mirror of
https://github.com/noDRM/DeDRM_tools
synced 2024-12-27 21:59:11 +01:00
tools v3.6
This commit is contained in:
Apprentice Alf
parent
ac9cdb1e98
commit
427137b0fe
17 changed files with 294 additions and 183 deletions
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@ -24,7 +24,7 @@
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<key>CFBundleExecutable</key>
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<string>droplet</string>
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<key>CFBundleGetInfoString</key>
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<string>DeDRM 2.3, Copyright © 2010–2011 by Apprentice Alf and others.</string>
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<string>DeDRM 2.4, Copyright © 2010–2011 by Apprentice Alf and others.</string>
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<key>CFBundleIconFile</key>
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<string>droplet</string>
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<key>CFBundleInfoDictionaryVersion</key>
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@ -34,7 +34,7 @@
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<key>CFBundlePackageType</key>
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<string>APPL</string>
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<key>CFBundleShortVersionString</key>
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<string>2.3</string>
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<string>2.4</string>
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<key>CFBundleSignature</key>
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<string>dplt</string>
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<key>LSMinimumSystemVersion</key>
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@ -29,7 +29,7 @@ from __future__ import with_statement
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# and import that ZIP into Calibre using its plugin configuration GUI.
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__version__ = '2.4'
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__version__ = '2.6'
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class Unbuffered:
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def __init__(self, stream):
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@ -250,7 +250,7 @@ if not __name__ == "__main__" and inCalibre:
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Provided by the work of many including DiapDealer, SomeUpdates, IHeartCabbages, CMBDTC, Skindle, DarkReverser, ApprenticeAlf, etc.'
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supported_platforms = ['osx', 'windows', 'linux'] # Platforms this plugin will run on
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author = 'DiapDealer, SomeUpdates' # The author of this plugin
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version = (0, 2, 4) # The version number of this plugin
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version = (0, 2, 6) # The version number of this plugin
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file_types = set(['prc','mobi','azw','azw1','tpz']) # The file types that this plugin will be applied to
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on_import = True # Run this plugin during the import
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priority = 210 # run this plugin before mobidedrm, k4pcdedrm, k4dedrm
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@ -224,13 +224,11 @@ def pidFromSerial(s, l):
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# Parse the EXTH header records and use the Kindle serial number to calculate the book pid.
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def getKindlePid(pidlst, rec209, token, serialnum):
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if rec209 != None and token != None:
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# Compute book PID
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pidHash = SHA1(serialnum+rec209+token)
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bookPID = encodePID(pidHash)
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bookPID = checksumPid(bookPID)
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pidlst.append(bookPID)
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# Compute book PID
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pidHash = SHA1(serialnum+rec209+token)
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bookPID = encodePID(pidHash)
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bookPID = checksumPid(bookPID)
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pidlst.append(bookPID)
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# compute fixed pid for old pre 2.5 firmware update pid as well
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bookPID = pidFromSerial(serialnum, 7) + "*"
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@ -276,9 +274,6 @@ def getK4Pids(pidlst, rec209, token, kInfoFile=None):
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pidlst.append(devicePID)
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# Compute book PID
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if rec209 == None or token == None:
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print "\nNo EXTH record type 209 or token - Perhaps not a K4 file?"
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return pidlst
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# Get the kindle account token
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kindleAccountToken = getKindleInfoValueForKey("kindle.account.tokens")
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@ -47,8 +47,9 @@
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# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
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# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
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# 0.27 - Correct pid metadata token generation to match that used by skindle (Thank You Bart!)
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# 0.28 - slight additional changes to metadata token generation (None -> '')
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__version__ = '0.27'
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__version__ = '0.28'
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import sys
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@ -237,12 +238,11 @@ class MobiBook:
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return title
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def getPIDMetaInfo(self):
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rec209 = None
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token = None
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rec209 = ''
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token = ''
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if 209 in self.meta_array:
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rec209 = self.meta_array[209]
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data = rec209
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token = ''
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# The 209 data comes in five byte groups. Interpret the last four bytes
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# of each group as a big endian unsigned integer to get a key value
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# if that key exists in the meta_array, append its contents to the token
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@ -157,18 +157,22 @@ class TopazBook:
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raise TpzDRMError("Parse Error : Record Names Don't Match")
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flags = ord(self.fo.read(1))
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nbRecords = ord(self.fo.read(1))
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# print nbRecords
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for i in range (0,nbRecords) :
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record = [bookReadString(self.fo), bookReadString(self.fo)]
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self.bookMetadata[record[0]] = record[1]
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keyval = bookReadString(self.fo)
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content = bookReadString(self.fo)
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# print keyval
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# print content
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self.bookMetadata[keyval] = content
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return self.bookMetadata
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def getPIDMetaInfo(self):
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keysRecord = None
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keysRecordRecord = None
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if 'keys' in self.bookMetadata:
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keysRecord = self.bookMetadata['keys']
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if keysRecord in self.bookMetadata:
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keysRecordRecord = self.bookMetadata[keysRecord]
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keysRecord = self.bookMetadata.get('keys','')
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keysRecordRecord = ''
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if keysRecord != '':
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keylst = keysRecord.split(',')
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for keyval in keylst:
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keysRecordRecord += self.bookMetadata.get(keyval,'')
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return keysRecord, keysRecordRecord
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def getBookTitle(self):
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@ -29,7 +29,7 @@ from __future__ import with_statement
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# and import that ZIP into Calibre using its plugin configuration GUI.
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__version__ = '2.4'
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__version__ = '2.6'
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class Unbuffered:
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def __init__(self, stream):
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@ -250,7 +250,7 @@ if not __name__ == "__main__" and inCalibre:
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Provided by the work of many including DiapDealer, SomeUpdates, IHeartCabbages, CMBDTC, Skindle, DarkReverser, ApprenticeAlf, etc.'
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supported_platforms = ['osx', 'windows', 'linux'] # Platforms this plugin will run on
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author = 'DiapDealer, SomeUpdates' # The author of this plugin
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version = (0, 2, 4) # The version number of this plugin
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version = (0, 2, 6) # The version number of this plugin
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file_types = set(['prc','mobi','azw','azw1','tpz']) # The file types that this plugin will be applied to
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on_import = True # Run this plugin during the import
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priority = 210 # run this plugin before mobidedrm, k4pcdedrm, k4dedrm
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@ -224,13 +224,11 @@ def pidFromSerial(s, l):
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# Parse the EXTH header records and use the Kindle serial number to calculate the book pid.
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def getKindlePid(pidlst, rec209, token, serialnum):
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if rec209 != None and token != None:
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# Compute book PID
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pidHash = SHA1(serialnum+rec209+token)
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bookPID = encodePID(pidHash)
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bookPID = checksumPid(bookPID)
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pidlst.append(bookPID)
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# Compute book PID
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pidHash = SHA1(serialnum+rec209+token)
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bookPID = encodePID(pidHash)
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bookPID = checksumPid(bookPID)
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pidlst.append(bookPID)
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# compute fixed pid for old pre 2.5 firmware update pid as well
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bookPID = pidFromSerial(serialnum, 7) + "*"
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@ -276,9 +274,6 @@ def getK4Pids(pidlst, rec209, token, kInfoFile=None):
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pidlst.append(devicePID)
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# Compute book PID
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if rec209 == None or token == None:
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print "\nNo EXTH record type 209 or token - Perhaps not a K4 file?"
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return pidlst
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# Get the kindle account token
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kindleAccountToken = getKindleInfoValueForKey("kindle.account.tokens")
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@ -47,8 +47,9 @@
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# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
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# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
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# 0.27 - Correct pid metadata token generation to match that used by skindle (Thank You Bart!)
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# 0.28 - slight additional changes to metadata token generation (None -> '')
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__version__ = '0.27'
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__version__ = '0.28'
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import sys
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@ -237,12 +238,11 @@ class MobiBook:
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return title
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def getPIDMetaInfo(self):
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rec209 = None
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token = None
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rec209 = ''
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token = ''
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if 209 in self.meta_array:
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rec209 = self.meta_array[209]
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data = rec209
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token = ''
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# The 209 data comes in five byte groups. Interpret the last four bytes
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# of each group as a big endian unsigned integer to get a key value
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# if that key exists in the meta_array, append its contents to the token
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@ -157,18 +157,22 @@ class TopazBook:
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raise TpzDRMError("Parse Error : Record Names Don't Match")
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flags = ord(self.fo.read(1))
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nbRecords = ord(self.fo.read(1))
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# print nbRecords
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for i in range (0,nbRecords) :
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record = [bookReadString(self.fo), bookReadString(self.fo)]
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self.bookMetadata[record[0]] = record[1]
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keyval = bookReadString(self.fo)
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content = bookReadString(self.fo)
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# print keyval
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# print content
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self.bookMetadata[keyval] = content
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return self.bookMetadata
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def getPIDMetaInfo(self):
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keysRecord = None
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keysRecordRecord = None
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if 'keys' in self.bookMetadata:
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keysRecord = self.bookMetadata['keys']
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if keysRecord in self.bookMetadata:
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keysRecordRecord = self.bookMetadata[keysRecord]
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keysRecord = self.bookMetadata.get('keys','')
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keysRecordRecord = ''
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if keysRecord != '':
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keylst = keysRecord.split(',')
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for keyval in keylst:
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keysRecordRecord += self.bookMetadata.get(keyval,'')
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return keysRecord, keysRecordRecord
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def getBookTitle(self):
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@ -1,4 +1,4 @@
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ReadMe_DeDRM_WinApp_v1.5
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ReadMe_DeDRM_WinApp_vX.X
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-----------------------
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DeDRM_WinApp is a pure python drag and drop application that allows users to drag and drop ebooks or folders of ebooks onto theDeDRM_Drop_Target to have the DRM removed. It repackages the"tools" python software in one easy to use program.
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@ -29,7 +29,7 @@ from __future__ import with_statement
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# and import that ZIP into Calibre using its plugin configuration GUI.
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__version__ = '2.4'
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__version__ = '2.6'
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class Unbuffered:
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def __init__(self, stream):
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@ -250,7 +250,7 @@ if not __name__ == "__main__" and inCalibre:
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Provided by the work of many including DiapDealer, SomeUpdates, IHeartCabbages, CMBDTC, Skindle, DarkReverser, ApprenticeAlf, etc.'
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supported_platforms = ['osx', 'windows', 'linux'] # Platforms this plugin will run on
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author = 'DiapDealer, SomeUpdates' # The author of this plugin
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version = (0, 2, 4) # The version number of this plugin
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version = (0, 2, 6) # The version number of this plugin
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file_types = set(['prc','mobi','azw','azw1','tpz']) # The file types that this plugin will be applied to
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on_import = True # Run this plugin during the import
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priority = 210 # run this plugin before mobidedrm, k4pcdedrm, k4dedrm
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@ -224,13 +224,11 @@ def pidFromSerial(s, l):
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# Parse the EXTH header records and use the Kindle serial number to calculate the book pid.
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def getKindlePid(pidlst, rec209, token, serialnum):
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if rec209 != None and token != None:
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# Compute book PID
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pidHash = SHA1(serialnum+rec209+token)
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bookPID = encodePID(pidHash)
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bookPID = checksumPid(bookPID)
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pidlst.append(bookPID)
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# Compute book PID
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pidHash = SHA1(serialnum+rec209+token)
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bookPID = encodePID(pidHash)
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bookPID = checksumPid(bookPID)
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pidlst.append(bookPID)
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# compute fixed pid for old pre 2.5 firmware update pid as well
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bookPID = pidFromSerial(serialnum, 7) + "*"
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@ -276,9 +274,6 @@ def getK4Pids(pidlst, rec209, token, kInfoFile=None):
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pidlst.append(devicePID)
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# Compute book PID
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if rec209 == None or token == None:
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print "\nNo EXTH record type 209 or token - Perhaps not a K4 file?"
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return pidlst
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# Get the kindle account token
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kindleAccountToken = getKindleInfoValueForKey("kindle.account.tokens")
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@ -47,8 +47,9 @@
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# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
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# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
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# 0.27 - Correct pid metadata token generation to match that used by skindle (Thank You Bart!)
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# 0.28 - slight additional changes to metadata token generation (None -> '')
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__version__ = '0.27'
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__version__ = '0.28'
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import sys
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@ -237,12 +238,11 @@ class MobiBook:
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return title
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def getPIDMetaInfo(self):
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rec209 = None
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token = None
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rec209 = ''
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token = ''
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if 209 in self.meta_array:
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rec209 = self.meta_array[209]
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data = rec209
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token = ''
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# The 209 data comes in five byte groups. Interpret the last four bytes
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# of each group as a big endian unsigned integer to get a key value
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# if that key exists in the meta_array, append its contents to the token
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@ -157,18 +157,22 @@ class TopazBook:
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raise TpzDRMError("Parse Error : Record Names Don't Match")
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flags = ord(self.fo.read(1))
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nbRecords = ord(self.fo.read(1))
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# print nbRecords
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for i in range (0,nbRecords) :
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record = [bookReadString(self.fo), bookReadString(self.fo)]
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self.bookMetadata[record[0]] = record[1]
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keyval = bookReadString(self.fo)
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content = bookReadString(self.fo)
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# print keyval
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# print content
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self.bookMetadata[keyval] = content
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return self.bookMetadata
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def getPIDMetaInfo(self):
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keysRecord = None
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keysRecordRecord = None
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if 'keys' in self.bookMetadata:
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keysRecord = self.bookMetadata['keys']
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if keysRecord in self.bookMetadata:
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keysRecordRecord = self.bookMetadata[keysRecord]
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keysRecord = self.bookMetadata.get('keys','')
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keysRecordRecord = ''
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if keysRecord != '':
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keylst = keysRecord.split(',')
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for keyval in keylst:
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keysRecordRecord += self.bookMetadata.get(keyval,'')
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return keysRecord, keysRecordRecord
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def getBookTitle(self):
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@ -47,8 +47,9 @@
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# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
|
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# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
|
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# 0.27 - Correct pid metadata token generation to match that used by skindle (Thank You Bart!)
|
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# 0.28 - slight additional changes to metadata token generation (None -> '')
|
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__version__ = '0.27'
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__version__ = '0.28'
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import sys
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@ -237,12 +238,11 @@ class MobiBook:
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return title
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def getPIDMetaInfo(self):
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rec209 = None
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token = None
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rec209 = ''
|
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token = ''
|
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if 209 in self.meta_array:
|
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rec209 = self.meta_array[209]
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data = rec209
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token = ''
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# The 209 data comes in five byte groups. Interpret the last four bytes
|
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# of each group as a big endian unsigned integer to get a key value
|
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# if that key exists in the meta_array, append its contents to the token
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|
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@ -24,7 +24,7 @@
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# 0.14 - Working out when the extra data flags are present has been problematic
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# Versions 7 through 9 have tried to tweak the conditions, but have been
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# only partially successful. Closer examination of lots of sample
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# files reveals that a confusin has arisen because trailing data entries
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# files reveals that a confusion has arisen because trailing data entries
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# are not encrypted, but it turns out that the multibyte entries
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# in utf8 file are encrypted. (Although neither kind gets compressed.)
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# This knowledge leads to a simplification of the test for the
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@ -39,13 +39,19 @@
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# Removed the disabled Calibre plug-in code
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# Permit use of 8-digit PIDs
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# 0.19 - It seems that multibyte entries aren't encrypted in a v6 file either.
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# 0.20 - Corretion: It seems that multibyte entries are encrypted in a v6 file.
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# 0.20 - Correction: It seems that multibyte entries are encrypted in a v6 file.
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# 0.21 - Added support for multiple pids
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# 0.22 - revised structure to hold MobiBook as a class to allow an extended interface
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# 0.23 - fixed problem with older files with no EXTH section
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# 0.24 - add support for type 1 encryption and 'TEXtREAd' books as well
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# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
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# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
|
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# 0.27 - Correct pid metadata token generation to match that used by skindle (Thank You Bart!)
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# 0.28 - slight additional changes to metadata token generation (None -> '')
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__version__ = '0.20'
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__version__ = '0.28'
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import sys
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import struct
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import binascii
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class Unbuffered:
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def __init__(self, stream):
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@ -55,10 +61,20 @@ class Unbuffered:
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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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sys.stdout=Unbuffered(sys.stdout)
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import os
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import struct
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||||
import binascii
|
||||
|
||||
class DrmException(Exception):
|
||||
pass
|
||||
|
||||
|
||||
#
|
||||
# MobiBook Utility Routines
|
||||
#
|
||||
|
||||
# Implementation of Pukall Cipher 1
|
||||
def PC1(key, src, decryption=True):
|
||||
sum1 = 0;
|
||||
|
|
@ -70,7 +86,6 @@ def PC1(key, src, decryption=True):
|
|||
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;
|
||||
|
|
@ -131,7 +146,9 @@ def getSizeOfTrailingDataEntries(ptr, size, flags):
|
|||
num += (ord(ptr[size - num - 1]) & 0x3) + 1
|
||||
return num
|
||||
|
||||
class DrmStripper:
|
||||
|
||||
|
||||
class MobiBook:
|
||||
def loadSection(self, section):
|
||||
if (section + 1 == self.num_sections):
|
||||
endoff = len(self.data_file)
|
||||
|
|
@ -140,6 +157,101 @@ class DrmStripper:
|
|||
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])
|
||||
content = exth[pos + 8: pos + size]
|
||||
self.meta_array[type] = content
|
||||
# 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)
|
||||
elif type == 404 and size == 9:
|
||||
# make sure text to speech is enabled
|
||||
self.patchSection(0, "\0", 16 + self.mobi_length + pos + 8)
|
||||
# print type, size, content, content.encode('hex')
|
||||
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 = ''
|
||||
token = ''
|
||||
if 209 in self.meta_array:
|
||||
rec209 = self.meta_array[209]
|
||||
data = rec209
|
||||
# The 209 data comes in five byte groups. Interpret the last four bytes
|
||||
# of each group as a big endian unsigned integer to get a key value
|
||||
# if that key exists in the meta_array, append its contents to the token
|
||||
for i in xrange(0,len(data),5):
|
||||
val, = struct.unpack('>I',data[i+1:i+5])
|
||||
sval = self.meta_array.get(val,'')
|
||||
token += sval
|
||||
return rec209, token
|
||||
|
||||
def patch(self, off, new):
|
||||
self.data_file = self.data_file[:off] + new + self.data_file[off+len(new):]
|
||||
|
||||
|
|
@ -152,134 +264,136 @@ class DrmStripper:
|
|||
assert off + in_off + len(new) <= endoff
|
||||
self.patch(off + in_off, new)
|
||||
|
||||
def parseDRM(self, data, count, pid):
|
||||
pid = pid.ljust(16,'\0')
|
||||
keyvec1 = "\x72\x38\x33\xB0\xB4\xF2\xE3\xCA\xDF\x09\x01\xD6\xE2\xE0\x3F\x96"
|
||||
temp_key = PC1(keyvec1, pid, False)
|
||||
temp_key_sum = sum(map(ord,temp_key)) & 0xff
|
||||
def parseDRM(self, data, count, pidlist):
|
||||
found_key = None
|
||||
for i in xrange(count):
|
||||
verification, size, type, cksum, cookie = struct.unpack('>LLLBxxx32s', data[i*0x30:i*0x30+0x30])
|
||||
cookie = PC1(temp_key, cookie)
|
||||
ver,flags,finalkey,expiry,expiry2 = struct.unpack('>LL16sLL', cookie)
|
||||
if verification == ver and cksum == temp_key_sum and (flags & 0x1F) == 1:
|
||||
found_key = finalkey
|
||||
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])
|
||||
cookie = PC1(temp_key, cookie)
|
||||
ver,flags,finalkey,expiry,expiry2 = struct.unpack('>LL16sLL', cookie)
|
||||
if verification == ver and cksum == temp_key_sum:
|
||||
found_key = finalkey
|
||||
break
|
||||
return found_key
|
||||
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 __init__(self, data_file, pid):
|
||||
if len(pid)==10:
|
||||
if checksumPid(pid[0:-2]) != pid:
|
||||
raise DrmException("invalid PID checksum")
|
||||
pid = pid[0:-2]
|
||||
elif len(pid)==8:
|
||||
print "PID without checksum given. With checksum PID is "+checksumPid(pid)
|
||||
else:
|
||||
raise DrmException("Invalid PID length")
|
||||
|
||||
self.data_file = data_file
|
||||
header = data_file[0:72]
|
||||
if header[0x3C:0x3C+8] != 'BOOKMOBI':
|
||||
raise DrmException("invalid file format")
|
||||
self.num_sections, = struct.unpack('>H', data_file[76:78])
|
||||
|
||||
self.sections = []
|
||||
for i in xrange(self.num_sections):
|
||||
offset, a1,a2,a3,a4 = struct.unpack('>LBBBB', data_file[78+i*8:78+i*8+8])
|
||||
flags, val = a1, a2<<16|a3<<8|a4
|
||||
self.sections.append( (offset, flags, val) )
|
||||
|
||||
sect = self.loadSection(0)
|
||||
records, = struct.unpack('>H', sect[0x8:0x8+2])
|
||||
mobi_length, = struct.unpack('>L',sect[0x14:0x18])
|
||||
mobi_version, = struct.unpack('>L',sect[0x68:0x6C])
|
||||
extra_data_flags = 0
|
||||
print "MOBI header version = %d, length = %d" %(mobi_version, mobi_length)
|
||||
if (mobi_length >= 0xE4) and (mobi_version >= 5):
|
||||
extra_data_flags, = struct.unpack('>H', sect[0xF2:0xF4])
|
||||
print "Extra Data Flags = %d" %extra_data_flags
|
||||
if 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.
|
||||
extra_data_flags &= 0xFFFE
|
||||
|
||||
crypto_type, = struct.unpack('>H', sect[0xC:0xC+2])
|
||||
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."
|
||||
else:
|
||||
if crypto_type == 1:
|
||||
raise DrmException("cannot decode Mobipocket encryption type 1")
|
||||
if crypto_type != 2:
|
||||
raise DrmException("unknown encryption type: %d" % crypto_type)
|
||||
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', sect[0xA8:0xA8+16])
|
||||
drm_ptr, drm_count, drm_size, drm_flags = struct.unpack('>LLLL', self.sect[0xA8:0xA8+16])
|
||||
if drm_count == 0:
|
||||
raise DrmException("no PIDs found in this file")
|
||||
found_key = self.parseDRM(sect[drm_ptr:drm_ptr+drm_size], drm_count, pid)
|
||||
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. maybe the PID is incorrect")
|
||||
|
||||
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)
|
||||
# clear the crypto type
|
||||
self.patchSection(0, "\0" * 2, 0xC)
|
||||
|
||||
if pid=="00000000":
|
||||
print "File has default encryption, no specific PID."
|
||||
else:
|
||||
print "File is encoded with PID "+checksumPid(pid)+"."
|
||||
|
||||
# decrypt sections
|
||||
print "Decrypting. Please wait . . .",
|
||||
new_data = self.data_file[:self.sections[1][0]]
|
||||
for i in xrange(1, records+1):
|
||||
data = self.loadSection(i)
|
||||
extra_size = getSizeOfTrailingDataEntries(data, len(data), 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:]
|
||||
#self.patchSection(i, PC1(found_key, data[0:len(data) - extra_size]))
|
||||
if self.num_sections > records+1:
|
||||
new_data += self.data_file[self.sections[records+1][0]:]
|
||||
self.data_file = new_data
|
||||
print "done"
|
||||
# clear the crypto type
|
||||
self.patchSection(0, "\0" * 2, 0xC)
|
||||
|
||||
def getResult(self):
|
||||
# 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):
|
||||
sys.stdout=Unbuffered(sys.stdout)
|
||||
data_file = file(infile, 'rb').read()
|
||||
strippedFile = DrmStripper(data_file, pid)
|
||||
return strippedFile.getResult()
|
||||
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):
|
||||
sys.stdout=Unbuffered(sys.stdout)
|
||||
print ('MobiDeDrm v%(__version__)s. '
|
||||
'Copyright 2008-2010 The Dark Reverser.' % globals())
|
||||
if len(argv)<4:
|
||||
if len(argv)<3 or len(argv)>4:
|
||||
print "Removes protection from Mobipocket books"
|
||||
print "Usage:"
|
||||
print " %s <infile> <outfile> <PID>" % sys.argv[0]
|
||||
print " %s <infile> <outfile> [<Comma separated list of PIDs to try>]" % sys.argv[0]
|
||||
return 1
|
||||
else:
|
||||
infile = argv[1]
|
||||
outfile = argv[2]
|
||||
pid = argv[3]
|
||||
if len(argv) is 4:
|
||||
pidlist = argv[3].split(',')
|
||||
else:
|
||||
pidlist = {}
|
||||
try:
|
||||
stripped_file = getUnencryptedBook(infile, pid)
|
||||
stripped_file = getUnencryptedBookWithList(infile, pidlist)
|
||||
file(outfile, 'wb').write(stripped_file)
|
||||
except DrmException, e:
|
||||
print "Error: %s" % e
|
||||
|
|
|
|||
|
|
@ -47,8 +47,9 @@
|
|||
# 0.25 - Fixed support for 'BOOKMOBI' type 1 encryption
|
||||
# 0.26 - Now enables Text-To-Speech flag and sets clipping limit to 100%
|
||||
# 0.27 - Correct pid metadata token generation to match that used by skindle (Thank You Bart!)
|
||||
# 0.28 - slight additional changes to metadata token generation (None -> '')
|
||||
|
||||
__version__ = '0.27'
|
||||
__version__ = '0.28'
|
||||
|
||||
import sys
|
||||
|
||||
|
|
@ -237,12 +238,11 @@ class MobiBook:
|
|||
return title
|
||||
|
||||
def getPIDMetaInfo(self):
|
||||
rec209 = None
|
||||
token = None
|
||||
rec209 = ''
|
||||
token = ''
|
||||
if 209 in self.meta_array:
|
||||
rec209 = self.meta_array[209]
|
||||
data = rec209
|
||||
token = ''
|
||||
# The 209 data comes in five byte groups. Interpret the last four bytes
|
||||
# of each group as a big endian unsigned integer to get a key value
|
||||
# if that key exists in the meta_array, append its contents to the token
|
||||
|
|
|
|||
Loading…
Reference in a new issue