#!/usr/bin/env python
-# -*- coding: ascii -*-
# vim:ts=4:sw=4:softtabstop=4:smarttab:expandtab
#
# This is a python script. You need a Python interpreter to run it.
#
# TODO run this through a profiler - speed increases so far was from
# applying "quick known fixes", added (commented out) cprofiler call
-# 0.05 - Support for more things in type 272
+# 0.05 - Improved type 272 support for sidebars, links, chapters, metainfo, etc
# 0.06 - Merge of 0.04 and 0.05. Improved HTML output
# Placed images in subfolder, so that it's possible to just
# drop the book.pml file onto DropBook to make an unencrypted
# copy of the eReader file.
# Using that with Calibre works a lot better than the HTML
# conversion in this code.
+# 0.07 - Further Improved type 272 support for sidebars with all earlier fixes
+# 0.07a - Fixed some typos
-__version__='0.06'
-DEBUG = 0
+__version__='0.07'
# Import Psyco if available
try:
write_pml=False
-ECB = 0
-CBC = 1
+ECB = 0
+CBC = 1
class Des(object):
__pc1 = [56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3]
__left_rotations = [1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1]
__pc2 = [13, 16, 10, 23, 0, 4,2, 27, 14, 5, 20, 9,
- 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
- 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
- 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31]
- __ip = [57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
- 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7,
- 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2,
- 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6]
+ 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
+ 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
+ 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31]
+ __ip = [57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
+ 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7,
+ 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2,
+ 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6]
__expansion_table = [31, 0, 1, 2, 3, 4, 3, 4, 5, 6, 7, 8,
7, 8, 9, 10, 11, 12,11, 12, 13, 14, 15, 16,
15, 16, 17, 18, 19, 20,19, 20, 21, 22, 23, 24,
35, 3, 43, 11, 51, 19, 59, 27,34, 2, 42, 10, 50, 18, 58, 26,
33, 1, 41, 9, 49, 17, 57, 25,32, 0, 40, 8, 48, 16, 56, 24]
# Type of crypting being done
- ENCRYPT = 0x00
- DECRYPT = 0x01
+ ENCRYPT = 0x00
+ DECRYPT = 0x01
def __init__(self, key, mode=ECB, IV=None):
if len(key) != 8:
raise ValueError("Invalid DES key size. Key must be exactly 8 bytes long.")
self.setIV(IV)
self.L = []
self.R = []
- self.Kn = [ [0] * 48 ] * 16 # 16 48-bit keys (K1 - K16)
+ self.Kn = [ [0] * 48 ] * 16 # 16 48-bit keys (K1 - K16)
self.final = []
self.setKey(key)
def getKey(self):
def __init__(self, filename, ident):
self.contents = file(filename, 'rb').read()
self.header = self.contents[0:72]
- if DEBUG:
- file("header.dat", 'wb').write(self.header)
-
self.num_sections, = struct.unpack('>H', self.contents[76:78])
- if DEBUG:
- print "number of sections: %d" % self.num_sections
if self.header[0x3C:0x3C+8] != ident:
raise ValueError('Invalid file format')
self.sections = []
for i in xrange(self.num_sections):
offset, a1,a2,a3,a4 = struct.unpack('>LBBBB', self.contents[78+i*8:78+i*8+8])
flags, val = a1, a2<<16|a3<<8|a4
- if DEBUG:
- print "section %d offset %d" % ( i, offset )
self.sections.append( (offset, flags, val) )
def loadSection(self, section):
if section + 1 == self.num_sections:
def fixKey(key):
def fixByte(b):
return b ^ ((b ^ (b<<1) ^ (b<<2) ^ (b<<3) ^ (b<<4) ^ (b<<5) ^ (b<<6) ^ (b<<7) ^ 0x80) & 0x80)
- return "".join([chr(fixByte(ord(a))) for a in key])
+ return "".join([chr(fixByte(ord(a))) for a in key])
def deXOR(text, sp, table):
r=''
def __init__(self, section_reader, username, creditcard):
self.section_reader = section_reader
data = section_reader(0)
- self.data0 = data
- if DEBUG:
- file("data0.dat", 'wb').write(self.data0)
version, = struct.unpack('>H', data[0:2])
self.version = version
logging.info('eReader file format version %s', version)
raise ValueError('incorrect eReader version %d (error 1)' % version)
data = section_reader(1)
self.data = data
- # first key is used on last 8 bytes of data to get cookie_shuf and cookie_size
- self.first_key = data[0:8]
- des = Des(fixKey(self.first_key))
- self.end_key = des.decrypt(data[-8:])
- cookie_shuf, cookie_size = struct.unpack('>LL', self.end_key)
+ des = Des(fixKey(data[0:8]))
+ cookie_shuf, cookie_size = struct.unpack('>LL', des.decrypt(data[-8:]))
if cookie_shuf < 3 or cookie_shuf > 0x14 or cookie_size < 0xf0 or cookie_size > 0x200:
raise ValueError('incorrect eReader version (error 2)')
- # first key is also used to decrypt all remaining bytes in data into their shuffled version
- cookie = des.decrypt(data[-cookie_size:])
-
- # now unshuffle it
+ input = des.decrypt(data[-cookie_size:])
def unshuff(data, shuf):
r = [''] * len(data)
j = 0
for i in xrange(len(data)):
j = (j + shuf) % len(data)
r[j] = data[i]
- assert len("".join(r)) == len(data)
+ assert len("".join(r)) == len(data)
return "".join(r)
- r = unshuff(cookie[0:-8], cookie_shuf)
- if DEBUG:
- file("mainrecord.dat", 'wb').write(r)
-
+ 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
-
- # second key is made of of user private info i.e. name and crediticard info
+
user_key = struct.pack('>LL', binascii.crc32(fixUsername(username)) & 0xffffffff, binascii.crc32(creditcard[-8:])& 0xffffffff)
- self.user_key = user_key
-
- # the unshuffled data is examined to find record information
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 version == 272:
+ if self.version == 272:
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_bkinfo_pages = struct.unpack('>H', r[34:34+2])[0]
- self.first_bkinfo_page = struct.unpack('>H', r[32:32+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_footnote_pages = struct.unpack('>H', r[46:46+2])[0]
self.first_footnote_page = struct.unpack('>H', r[44:44+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]
-
self.num_sidebar_pages = struct.unpack('>H', r[38:38+2])[0]
self.first_sidebar_page = struct.unpack('>H', r[36:36+2])[0]
else:
self.num_chapter_pages = 0
self.num_link_pages = 0
- self.num_bkinfo_pages = 0
+ self.num_bookinfo_pages = 0
self.num_footnote_pages = 0
self.num_xtextsize_pages = 0
self.num_sidebar_pages = 0
self.first_chapter_page = -1
self.first_link_page = -1
- self.first_bkinfo_page = -1
+ self.first_bookinfo_page = -1
self.first_footnote_page = -1
self.first_xtextsize_page = -1
self.first_sidebar_page = -1
- if DEBUG:
- print "num_text_pages: %d" % self.num_text_pages
- print "first_text_page: %d" % 1
-
- print "num_chapter_pages: %d" % self.num_chapter_pages
- print "first_chapter_page: %d" % self.first_chapter_page
-
- print "num_image_pages: %d" % self.num_image_pages
- print "first_image_page: %d" % self.first_image_page
-
- print "num_footnote_pages: %d" % self.num_footnote_pages
- print "first_footnote_page: %d" % self.first_footnote_page
-
- print "num_link_pages: %d" % self.num_link_pages
- print "first_link_page: %d" % self.first_link_page
-
- print "num_bkinfo_pages: %d" % self.num_bkinfo_pages
- print "first_bkinfo_page: %d" % self.first_bkinfo_page
-
- print "num_xtextsize_pages: %d" % self.num_xtextsize_pages
- print "first_xtextsize_page: %d" % self.first_xtextsize_page
-
- print "num_sidebar_pages: %d" % self.num_sidebar_pages
- print "first_sidebar_page: %d" % self.first_sidebar_page
-
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')
- # the user_key is used to unpack the encrypted key which is stored in the unshuffled data
des = Des(fixKey(user_key))
if version == 259:
if drm_sub_version != 7:
elif version == 272:
encrypted_key = r[172:172+8]
encrypted_key_sha = r[56:56+20]
-
- # the decrypted version of encrypted_key is the content_key
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:
- # now dump chapter offsets and chapter names
- # see mobile read wiki for details
for i in xrange(self.num_chapter_pages):
chaps = self.section_reader(self.first_chapter_page + i)
j = i % self.xortable_size
- cv += deXOR(chaps, j, self.xortable)
+ 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:
- # now dump link offset and link names
- # see mobileread wiki for details
for i in xrange(self.num_link_pages):
links = self.section_reader(self.first_link_page + i)
j = i % self.xortable_size
- lv += deXOR(links, j, self.xortable)
+ 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 getBookInfoData(self):
- bi = ''
- if self.num_bkinfo_pages > 0:
- # now dump book information
- # see mobileread wiki for details
- for i in xrange(self.num_bkinfo_pages):
- binfo = self.section_reader(self.first_bkinfo_page + i)
- j = i % self.xortable_size
- bi += deXOR(binfo, j, self.xortable)
- return bi
-
-
def getExpandedTextSizesData(self):
- ts = ''
- if self.num_xtextsize_pages > 0:
- # now dump table of expanded sizes for each text page
- # (two bytes for each text page - see mobileread wiki for details)
- for i in xrange(self.num_xtextsize_pages):
- tsize = self.section_reader(self.first_xtextsize_page + i)
- j = i % self.xortable_size
- ts += deXOR(tsize, j, self.xortable)
- return ts
+ 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)
+ return bkinfo
def getText(self):
- # uses the content_key and zlib to decrypt and then inflate text sections
des = Des(fixKey(self.content_key))
r = ''
for i in xrange(self.num_text_pages):
# now handle footnotes pages
if self.num_footnote_pages > 0:
- # the first record of the footnote section must pass through the Xor Table to make it useful
+ # 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)
- p = 0
# the remaining records of the footnote sections need to be decoded with the content_key and zlib inflated
des = Des(fixKey(self.content_key))
r += '\\w="100%"'
r += 'Footnotes\p'
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='\Q="%s"' % id
r += '\n'
fnote_ids = fnote_ids[id_len+4:]
- # TO-DO - handle sidebar pages similar to footnotes pages
-
+ # now handle sidebar pages
+ if self.num_sidebar_pages > 0:
+ # 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))
+ r += '\\w="100%"'
+ r += 'Sidebars\p'
+ for i in xrange(1,self.num_sidebar_pages):
+ id_len = ord(sbar_ids[2])
+ id = sbar_ids[3:3+id_len]
+ fmarker='\Q="%s"' % id
+ r+=fmarker
+ r += zlib.decompress(des.decrypt(self.section_reader(self.first_sidebar_page + i)))
+ r += '\n'
+ sbar_ids = sbar_ids[id_len+4:]
return r
class PmlConverter(object):
- def __init__(self, s):
+ def __init__(self, s, bkinfo):
self.s = s
self.pos = 0
+ self.bkinfo = bkinfo
def nextOptAttr(self):
p = self.pos
if self.s[p:p+2] != '="':
print "unknown escape code %s" % c
self.pos = p + 1
return None, None, None
- def linkPrinter(link):
- return '<a href="%s">' % link
- def footnotePrinter(link):
- return '<a href="#%s">' % link ## TODO may need to cgi.escape name....
def LinePrinter(link):
- return '<hr width="%s">' % link
+ return '<hr width="%s" />' % link
+ def LinkPrinter(link):
+ return '<a href="%s">' % link
+ def InternalLinkPrinter(link):
+ return '<a href="#%s">' % link
+ def NotSupported(link):
+ raise NotImplemented()
+ def NewChapterNewPage(link):
+ raise NotImplemented()
def ChapterTitle(link):
print "Nonfatal Error: ChapterTitle not implemented."
return '<!-- ChapterTitle %s -->' %link
def ReferenceIndexItem(link):
print "Nonfatal Error: ReferenceIndexItem not implemented."
return '<!-- CReferenceIndexItem: %s -->' %link
-
# See http://wiki.mobileread.com/wiki/PML#Palm_Markup_Language
html_tags = {
- 'c' : ('<div class="center">', '</div>\n'),
- 'r' : ('<div class="right">', '</div>\n'),
+ 'c' : ('<div class="center">', '</div>'),
+ 'r' : ('<div class="right">', '</div>'),
'i' : ('<i>', '</i>'),
'u' : ('<u>', '</u>'),
'b' : ('<strong>', '</strong>'),
't' : ('', ''),
'Sb' : ('<sub>', '</sub>'),
'Sp' : ('<sup>', '</sup>'),
- 'X0' : ('<h1>', '</h1>\n'),
- 'X1' : ('<h2>', '</h2>\n'),
- 'X2' : ('<h3>', '</h3>\n'),
- 'X3' : ('<h4>', '</h4>\n'),
- 'X4' : ('<h5>', '</h5>\n'),
+ 'X0' : ('<h1>', '</h1>'),
+ 'X1' : ('<h2>', '</h2>'),
+ 'X2' : ('<h3>', '</h3>'),
+ 'X3' : ('<h4>', '</h4>'),
+ 'X4' : ('<h5>', '</h5>'),
'l' : ('<font size="+2">', '</font>'),
- 'q' : (linkPrinter, '</a>'),
- 'Fn' : (footnotePrinter, '</a>'),
+ 'q' : (LinkPrinter, '</a>'),
+ 'Fn' : (InternalLinkPrinter, '</a>'),
+ 'Sd' : (InternalLinkPrinter, '</a>'),
'w' : (LinePrinter, ''),
#'m' : handled in if block,
#'Q' : handled in if block,
#'a' : handled in if block,
#'U' : handled in if block,
- 'x' : ('<h1 class="breakbefore">', '</h1>\n'),
+ 'x' : ('<h1> class="breakbefore">', '</h1>'),
'Cn' : (ChapterTitle, ''),
'T' : (IndentPercent, ''),
'n' : (NormalFont, ''),
#'s' : (StdFont, ''),
's' : ('', ''),
- 'k' : ('<span style="font-variant: small-caps;">', '</span>'), # NOTE some pdb's then go ahead and use uppercase letters - which doesn't format the way one would expect (perhaps post process the output with html dom and lower case if only upper case letters are found?)
+ 'k' : ('<span style="font-variant: small-caps;">', '</span>'), # NOTE some pdb's then go ahead and use uppercase letters - which doesn't format the way one would expect (perhaps post process the output with html dom and lower ase is only upper case letters are found?)
'\\' : (SingleBackslash, ''),
'-' : (SoftHyphen, ''),
'I' : (ReferenceIndexItem, ''),
- 'Sd' : (footnotePrinter, '</a>'), ## untested
}
html_one_tags = {
'p' : '<p class="breakafter"> </p>\n'
156: 'œ',159: 'Ÿ'
}
def process(self):
- final = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n<html>\n<head>\n<meta http-equiv="content-type" content="text/html; charset=windows-1252">\n<style type="text/css">\ndiv.center { text-align:center; }\ndiv.right { text-align:right; }\n.breakbefore { page-break-before: always; }\n.breakafter { page-break-after: always; }\n</style>\n</head>\n<body>\n'
+ final = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n'
+ final += '<html>\n<head>\n<meta http-equiv="content-type" content="text/html; charset=windows-1252">\n'
+ if len(self.bkinfo) > 0:
+ title, author, copyright, publisher, isbn = self.bkinfo.split('\0',4)
+ isbn = isbn.strip('\0')
+ final += '<meta name="Title" content="%s"/>\n' % title
+ final += '<meta name="Author" content="%s"/>\n' % author
+ final += '<meta name="Copyright" content="%s"/>\n' % copyright
+ final += '<meta name="Publisher" content="%s"/>\n' % publisher
+ final += '<meta name="ISBN" content="%s"/>\n' % isbn
+ final += '<style type="text/css">\ndiv.center { text-align:center; }\ndiv.right { text-align:right; }\n.breakbefore { page-break-before: always; }\n.breakafter { page-break-after: always; }\n</style>\n'
+ final += '</head><body>\n'
in_tags = []
def makeText(s):
s = s.replace('&', '&')
if type(r) != str:
r = r(attr)
return r
-
+
if cmd in self.html_tags:
pair = (cmd, attr)
if cmd not in [a for (a,b) in in_tags]:
while j < len(in_tags):
final += getTag(in_tags[j], False)
j = j + 1
-
+
if cmd in self.html_one_tags:
final += self.html_one_tags[cmd]
if cmd == 'm':
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)
+ for i in xrange(er.getNumImages()):
+ name, contents = er.getImage(i)
+ file(os.path.join(imagedirpath, name), 'wb').write(contents)
pml_string = er.getText()
- pml = PmlConverter(pml_string)
pmlfilename = bookname + ".pml"
- htmlfilename = bookname + ".html"
file(os.path.join(outdir, pmlfilename),'wb').write(pml_string)
+
+ bkinfo = er.getBookInfo()
+
+ pml = PmlConverter(pml_string, bkinfo)
+ htmlfilename = bookname + ".html"
file(os.path.join(outdir, htmlfilename),'wb').write(pml.process())
-
+
ts = er.getExpandedTextSizesData()
file(os.path.join(outdir, 'xtextsizes.dat'), 'wb').write(ts)
cv = er.getChapterNamePMLOffsetData()
file(os.path.join(outdir, 'chapters.dat'), 'wb').write(cv)
-
- bi = er.getBookInfoData()
- file(os.path.join(outdir, 'bookinfo.dat'), 'wb').write(bi)
-
+
lv = er.getLinkNamePMLOffsetData()
file(os.path.join(outdir, 'links.dat'), 'wb').write(lv)
+
def main(argv=None):
global bookname
if argv is None:
elif len(argv)==5:
infile, outdir, name, cc = argv[1], argv[2], argv[3], argv[4]
bookname = os.path.splitext(os.path.basename(infile))[0]
-
+
try:
print "Processing..."
import time
#cProfile.runctx( command, globals(), locals(), filename="cprofile.profile" )
sys.exit(main())
-
projects / DeDRM.git / commitdiff