tools v1.3
This commit is contained in:
Apprentice Alf
@@ -25,15 +25,16 @@
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# import filter it works when importing unencrypted files.
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# Also now handles encrypted files that don't need a specific PID.
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# 0.11 - use autoflushed stdout and proper return values
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# 0.12 - Fix for problems with metadata import as Calibre plugin, report errors
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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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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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@@ -45,37 +46,37 @@ class DrmException(Exception):
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#implementation of Pukall Cipher 1
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def PC1(key, src, decryption=True):
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sum1 = 0;
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sum2 = 0;
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keyXorVal = 0;
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if len(key)!=16:
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print "Bad key length!"
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return None
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wkey = []
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for i in xrange(8):
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wkey.append(ord(key[i*2])<<8 | ord(key[i*2+1]))
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sum1 = 0;
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sum2 = 0;
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keyXorVal = 0;
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if len(key)!=16:
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print "Bad key length!"
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return None
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wkey = []
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for i in xrange(8):
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wkey.append(ord(key[i*2])<<8 | ord(key[i*2+1]))
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dst = ""
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for i in xrange(len(src)):
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temp1 = 0;
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byteXorVal = 0;
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for j in xrange(8):
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temp1 ^= wkey[j]
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sum2 = (sum2+j)*20021 + sum1
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sum1 = (temp1*346)&0xFFFF
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sum2 = (sum2+sum1)&0xFFFF
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temp1 = (temp1*20021+1)&0xFFFF
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byteXorVal ^= temp1 ^ sum2
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curByte = ord(src[i])
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if not decryption:
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keyXorVal = curByte * 257;
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curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF
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if decryption:
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keyXorVal = curByte * 257;
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for j in xrange(8):
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wkey[j] ^= keyXorVal;
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dst+=chr(curByte)
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return dst
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dst = ""
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for i in xrange(len(src)):
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temp1 = 0;
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byteXorVal = 0;
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for j in xrange(8):
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temp1 ^= wkey[j]
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sum2 = (sum2+j)*20021 + sum1
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sum1 = (temp1*346)&0xFFFF
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sum2 = (sum2+sum1)&0xFFFF
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temp1 = (temp1*20021+1)&0xFFFF
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byteXorVal ^= temp1 ^ sum2
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curByte = ord(src[i])
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if not decryption:
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keyXorVal = curByte * 257;
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curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF
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if decryption:
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keyXorVal = curByte * 257;
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for j in xrange(8):
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wkey[j] ^= keyXorVal;
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dst+=chr(curByte)
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return dst
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def checksumPid(s):
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letters = "ABCDEFGHIJKLMNPQRSTUVWXYZ123456789"
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@@ -234,40 +235,46 @@ if not __name__ == "__main__":
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description = 'Removes DRM from secure Mobi files'
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supported_platforms = ['linux', 'osx', 'windows'] # Platforms this plugin will run on
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author = 'The Dark Reverser' # The author of this plugin
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version = (0, 1, 0) # The version number of this plugin
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version = (0, 1, 2) # The version number of this plugin
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file_types = set(['prc','mobi','azw']) # 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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def run(self, path_to_ebook):
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of = self.temporary_file('.mobi')
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from calibre.gui2 import is_ok_to_use_qt
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from PyQt4.Qt import QMessageBox
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PID = self.site_customization
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data_file = file(path_to_ebook, 'rb').read()
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ar = PID.split(',')
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for i in ar:
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try:
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file(of.name, 'wb').write(DrmStripper(data_file, i).getResult())
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unlocked_file = DrmStripper(data_file, i).getResult()
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except DrmException:
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# Hm, we should display an error dialog here.
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# Dunno how though.
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# Ignore the dirty hack behind the curtain.
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# strexcept = 'echo exception: %s > /dev/tty' % e
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# subprocess.call(strexcept,shell=True)
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print i + ": not PID for book"
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# ignore the error
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pass
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else:
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of = self.temporary_file('.mobi')
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of.write(unlocked_file)
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of.close()
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return of.name
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if is_ok_to_use_qt():
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d = QMessageBox(QMessageBox.Warning, "MobiDeDRM Plugin", "Couldn't decode: %s\n\nImporting encrypted version." % path_to_ebook)
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d.show()
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d.raise_()
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d.exec_()
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return path_to_ebook
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def customization_help(self, gui=False):
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return 'Enter PID (separate multiple PIDs with comma)'
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if __name__ == "__main__":
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print "MobiDeDrm v0.11. Copyright (c) 2008 The Dark Reverser"
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print "MobiDeDrm v0.12. Copyright (c) 2008 The Dark Reverser"
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if len(sys.argv)<4:
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print "Removes protection from Mobipocket books"
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print "Usage:"
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print " mobidedrm infile.mobi outfile.mobi (PID)"
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sys.exit(1)
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else:
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else:
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infile = sys.argv[1]
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outfile = sys.argv[2]
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pid = sys.argv[3]
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