ineptpdf 7.6
This commit is contained in:
Apprentice Alf
parent
a76ba56cd8
commit
506d97d5f0
495
ineptpdf.pyw
495
ineptpdf.pyw
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@ -1,9 +1,9 @@
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#! /usr/bin/python
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# ineptpdf.pyw, version 7.5
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#! /usr/bin/env python
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# ineptpdf.pyw, version 7.6
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# To run this program install Python 2.6 from http://www.python.org/download/
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# and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto
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# and OpenSSL (already installed on Mac OS X and Linux) OR
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# PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto
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# (make sure to install the version for Python 2.6). Save this script file as
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# ineptpdf.pyw and double-click on it to run it.
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@ -28,9 +28,10 @@
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# 7.5 - allow support for OpenSSL to replace pycrypto on all platforms
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# implemented ARC4 interface to OpenSSL
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# fixed minor typos
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# 7.6 - backported AES and other fixes from version 8.4.48
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"""
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Decrypt Adobe ADEPT-encrypted PDF files.
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Decrypts Adobe ADEPT-encrypted PDF files.
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"""
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from __future__ import with_statement
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@ -50,10 +51,18 @@ import Tkconstants
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import tkFileDialog
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import tkMessageBox
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class ADEPTError(Exception):
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pass
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import hashlib
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def SHA256(message):
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ctx = hashlib.sha256()
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ctx.update(message)
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return ctx.digest()
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def _load_crypto_libcrypto():
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from ctypes import CDLL, POINTER, c_void_p, c_char_p, c_int, c_long, \
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Structure, c_ulong, create_string_buffer, cast
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@ -68,11 +77,17 @@ def _load_crypto_libcrypto():
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raise ADEPTError('libcrypto not found')
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libcrypto = CDLL(libcrypto)
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AES_MAXNR = 14
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RSA_NO_PADDING = 3
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c_char_pp = POINTER(c_char_p)
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c_int_p = POINTER(c_int)
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class AES_KEY(Structure):
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_fields_ = [('rd_key', c_long * (4 * (AES_MAXNR + 1))), ('rounds', c_int)]
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AES_KEY_p = POINTER(AES_KEY)
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class RC4_KEY(Structure):
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_fields_ = [('x', c_int), ('y', c_int), ('box', c_int * 256)]
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RC4_KEY_p = POINTER(RC4_KEY)
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@ -87,6 +102,12 @@ def _load_crypto_libcrypto():
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func.argtypes = argtypes
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return func
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AES_cbc_encrypt = F(None, 'AES_cbc_encrypt',[c_char_p, c_char_p, c_ulong, AES_KEY_p, c_char_p,c_int])
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AES_set_decrypt_key = F(c_int, 'AES_set_decrypt_key',[c_char_p, c_int, AES_KEY_p])
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RC4_set_key = F(None,'RC4_set_key',[RC4_KEY_p, c_int, c_char_p])
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RC4_crypt = F(None,'RC4',[RC4_KEY_p, c_int, c_char_p, c_char_p])
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d2i_RSAPrivateKey = F(RSA_p, 'd2i_RSAPrivateKey',
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[RSA_p, c_char_pp, c_long])
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RSA_size = F(c_int, 'RSA_size', [RSA_p])
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@ -94,9 +115,6 @@ def _load_crypto_libcrypto():
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[c_int, c_char_p, c_char_p, RSA_p, c_int])
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RSA_free = F(None, 'RSA_free', [RSA_p])
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RC4_set_key = F(None,'RC4_set_key',[RC4_KEY_p, c_int, c_char_p])
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RC4_crypt = F(None,'RC4',[RC4_KEY_p, c_int, c_char_p, c_char_p])
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class RSA(object):
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def __init__(self, der):
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buf = create_string_buffer(der)
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@ -135,12 +153,41 @@ def _load_crypto_libcrypto():
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RC4_crypt(self._key, len(data), data, out)
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return out.raw
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return (ARC4, RSA)
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class AES(object):
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@classmethod
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def new(cls, userkey, mode, iv):
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self = AES()
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self._blocksize = len(userkey)
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# mode is ignored since CBCMODE is only thing supported/used so far
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self._mode = mode
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if (self._blocksize != 16) and (self._blocksize != 24) and (self._blocksize != 32) :
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raise ADEPTError('AES improper key used')
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return
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keyctx = self._keyctx = AES_KEY()
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self._iv = iv
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rv = AES_set_decrypt_key(userkey, len(userkey) * 8, keyctx)
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if rv < 0:
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raise ADEPTError('Failed to initialize AES key')
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return self
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def __init__(self):
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self._blocksize = 0
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self._keyctx = None
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self._iv = 0
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self._mode = 0
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def decrypt(self, data):
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out = create_string_buffer(len(data))
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rv = AES_cbc_encrypt(data, out, len(data), self._keyctx, self._iv, 0)
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if rv == 0:
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raise ADEPTError('AES decryption failed')
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return out.raw
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return (ARC4, RSA, AES)
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def _load_crypto_pycrypto():
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from Crypto.PublicKey import RSA as _RSA
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from Crypto.Cipher import ARC4 as _ARC4
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from Crypto.Cipher import ARC4 as _ARC4
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from Crypto.Cipher import AES as _AES
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# ASN.1 parsing code from tlslite
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class ASN1Error(Exception):
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@ -241,6 +288,17 @@ def _load_crypto_pycrypto():
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def decrypt(self, data):
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return self._arc4.decrypt(data)
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class AES(object):
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@classmethod
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def new(cls, userkey, mode, iv):
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self = AES()
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self._aes = _AES.new(userkey, mode, iv)
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return self
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def __init__(self):
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self._aes = None
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def decrypt(self, data):
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return self._aes.decrypt(data)
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class RSA(object):
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def __init__(self, der):
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key = ASN1Parser([ord(x) for x in der])
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@ -257,18 +315,18 @@ def _load_crypto_pycrypto():
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def decrypt(self, data):
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return self._rsa.decrypt(data)
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return (ARC4, RSA)
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return (ARC4, RSA, AES)
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def _load_crypto():
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ARC4 = RSA = None
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ARC4 = RSA = AES = None
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for loader in (_load_crypto_libcrypto, _load_crypto_pycrypto):
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try:
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ARC4, RSA = loader()
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ARC4, RSA, AES = loader()
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break
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except (ImportError, ADEPTError):
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pass
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return (ARC4, RSA)
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ARC4, RSA = _load_crypto()
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return (ARC4, RSA, AES)
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ARC4, RSA, AES = _load_crypto()
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try:
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@ -287,107 +345,10 @@ GEN_XREF_STM = 1
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# This is the value for the current document
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gen_xref_stm = False # will be set in PDFSerializer
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###
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### ASN.1 parsing code from tlslite
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# PDF parsing routines from pdfminer, with changes for EBX_HANDLER
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def bytesToNumber(bytes):
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total = 0L
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for byte in bytes:
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total = (total << 8) + byte
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return total
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# Utilities
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class ASN1Error(Exception):
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pass
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class ASN1Parser(object):
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class Parser(object):
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def __init__(self, bytes):
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self.bytes = bytes
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self.index = 0
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def get(self, length):
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if self.index + length > len(self.bytes):
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raise ASN1Error("Error decoding ASN.1")
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x = 0
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for count in range(length):
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x <<= 8
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x |= self.bytes[self.index]
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self.index += 1
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return x
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def getFixBytes(self, lengthBytes):
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bytes = self.bytes[self.index : self.index+lengthBytes]
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self.index += lengthBytes
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return bytes
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def getVarBytes(self, lengthLength):
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lengthBytes = self.get(lengthLength)
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return self.getFixBytes(lengthBytes)
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def getFixList(self, length, lengthList):
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l = [0] * lengthList
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for x in range(lengthList):
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l[x] = self.get(length)
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return l
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def getVarList(self, length, lengthLength):
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lengthList = self.get(lengthLength)
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if lengthList % length != 0:
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raise ASN1Error("Error decoding ASN.1")
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lengthList = int(lengthList/length)
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l = [0] * lengthList
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for x in range(lengthList):
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l[x] = self.get(length)
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return l
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def startLengthCheck(self, lengthLength):
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self.lengthCheck = self.get(lengthLength)
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self.indexCheck = self.index
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def setLengthCheck(self, length):
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self.lengthCheck = length
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self.indexCheck = self.index
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def stopLengthCheck(self):
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if (self.index - self.indexCheck) != self.lengthCheck:
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raise ASN1Error("Error decoding ASN.1")
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def atLengthCheck(self):
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if (self.index - self.indexCheck) < self.lengthCheck:
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return False
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elif (self.index - self.indexCheck) == self.lengthCheck:
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return True
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else:
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raise ASN1Error("Error decoding ASN.1")
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def __init__(self, bytes):
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p = self.Parser(bytes)
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p.get(1)
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self.length = self._getASN1Length(p)
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self.value = p.getFixBytes(self.length)
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def getChild(self, which):
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p = self.Parser(self.value)
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for x in range(which+1):
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markIndex = p.index
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p.get(1)
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length = self._getASN1Length(p)
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p.getFixBytes(length)
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return ASN1Parser(p.bytes[markIndex:p.index])
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def _getASN1Length(self, p):
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firstLength = p.get(1)
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if firstLength<=127:
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return firstLength
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else:
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lengthLength = firstLength & 0x7F
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return p.get(lengthLength)
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###
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### PDF parsing routines from pdfminer, with changes for EBX_HANDLER
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## Utilities
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##
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def choplist(n, seq):
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'''Groups every n elements of the list.'''
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r = []
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@ -415,11 +376,11 @@ def nunpack(s, default=0):
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return TypeError('invalid length: %d' % l)
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STRICT = 1
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STRICT = 0
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## PS Exceptions
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##
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# PS Exceptions
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class PSException(Exception): pass
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class PSEOF(PSException): pass
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class PSSyntaxError(PSException): pass
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@ -427,8 +388,8 @@ class PSTypeError(PSException): pass
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class PSValueError(PSException): pass
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## Basic PostScript Types
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##
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# Basic PostScript Types
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# PSLiteral
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class PSObject(object): pass
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@ -559,7 +520,7 @@ class PSBaseParser(object):
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if not pos:
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pos = self.bufpos+self.charpos
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self.fp.seek(pos)
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print >>sys.stderr, 'poll(%d): %r' % (pos, self.fp.read(n))
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##print >>sys.stderr, 'poll(%d): %r' % (pos, self.fp.read(n))
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self.fp.seek(pos0)
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return
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@ -883,7 +844,7 @@ class PSStackParser(PSBaseParser):
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'''
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while not self.results:
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(pos, token) = self.nexttoken()
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#print (pos,token), (self.curtype, self.curstack)
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##print (pos,token), (self.curtype, self.curstack)
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if (isinstance(token, int) or
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isinstance(token, float) or
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isinstance(token, bool) or
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@ -1001,6 +962,7 @@ def decipher_all(decipher, objid, genno, x):
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x = dict((k, decf(v)) for (k, v) in x.iteritems())
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return x
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# Type cheking
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def int_value(x):
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x = resolve1(x)
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@ -1082,16 +1044,20 @@ def ascii85decode(data):
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## PDFStream type
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##
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class PDFStream(PDFObject):
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def __init__(self, dic, rawdata, decipher=None):
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length = int_value(dic.get('Length', 0))
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eol = rawdata[length:]
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if eol in ('\r', '\n', '\r\n'):
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rawdata = rawdata[:length]
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if length != len(rawdata):
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print >>sys.stderr, "[warning] data length mismatch"
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# quick and dirty fix for false length attribute,
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# might not work if the pdf stream parser has a problem
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if decipher != None and decipher.__name__ == 'decrypt_aes':
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if (len(rawdata) % 16) != 0:
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cutdiv = len(rawdata) // 16
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rawdata = rawdata[:16*cutdiv]
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else:
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if eol in ('\r', '\n', '\r\n'):
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rawdata = rawdata[:length]
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self.dic = dic
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self.rawdata = rawdata
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self.decipher = decipher
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@ -1125,6 +1091,7 @@ class PDFStream(PDFObject):
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if 'Filter' not in self.dic:
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self.data = data
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self.rawdata = None
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##print self.dict
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return
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filters = self.dic['Filter']
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if not isinstance(filters, list):
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@ -1354,7 +1321,6 @@ class PDFDocument(object):
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self.parser = None
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self.encryption = None
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self.decipher = None
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self.ready = False
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return
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# set_parser(parser)
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@ -1377,8 +1343,13 @@ class PDFDocument(object):
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# If there's an encryption info, remember it.
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if 'Encrypt' in trailer:
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#assert not self.encryption
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self.encryption = (list_value(trailer['ID']),
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try:
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self.encryption = (list_value(trailer['ID']),
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dict_value(trailer['Encrypt']))
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# fix for bad files
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except:
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self.encryption = ('ffffffffffffffffffffffffffffffffffff',
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dict_value(trailer['Encrypt']))
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if 'Root' in trailer:
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self.set_root(dict_value(trailer['Root']))
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break
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@ -1400,7 +1371,6 @@ class PDFDocument(object):
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if STRICT:
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raise PDFSyntaxError('Catalog not found!')
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return
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# initialize(password='')
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# Perform the initialization with a given password.
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# This step is mandatory even if there's no password associated
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@ -1412,12 +1382,132 @@ class PDFDocument(object):
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return
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(docid, param) = self.encryption
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type = literal_name(param['Filter'])
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if type == 'Adobe.APS':
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return self.initialize_adobe_ps(password, docid, param)
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if type == 'Standard':
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return self.initialize_standard(password, docid, param)
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if type == 'EBX_HANDLER':
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return self.initialize_ebx(password, docid, param)
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raise PDFEncryptionError('Unknown filter: param=%r' % param)
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def initialize_adobe_ps(self, password, docid, param):
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global KEYFILEPATH
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self.decrypt_key = self.genkey_adobe_ps(param)
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self.genkey = self.genkey_v4
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self.decipher = self.decrypt_aes
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self.ready = True
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return
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def genkey_adobe_ps(self, param):
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# nice little offline principal keys dictionary
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# global static principal key for German Onleihe / Bibliothek Digital
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principalkeys = { 'bibliothek-digital.de': 'rRwGv2tbpKov1krvv7PO0ws9S436/lArPlfipz5Pqhw='.decode('base64')}
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self.is_printable = self.is_modifiable = self.is_extractable = True
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length = int_value(param.get('Length', 0)) / 8
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edcdata = str_value(param.get('EDCData')).decode('base64')
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pdrllic = str_value(param.get('PDRLLic')).decode('base64')
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pdrlpol = str_value(param.get('PDRLPol')).decode('base64')
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edclist = []
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for pair in edcdata.split('\n'):
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edclist.append(pair)
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# principal key request
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for key in principalkeys:
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if key in pdrllic:
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principalkey = principalkeys[key]
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else:
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raise ADEPTError('Cannot find principal key for this pdf')
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shakey = SHA256(principalkey)
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ivector = 16 * chr(0)
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plaintext = AES.new(shakey,AES.MODE_CBC,ivector).decrypt(edclist[9].decode('base64'))
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if plaintext[-16:] != 16 * chr(16):
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raise ADEPTError('Offlinekey cannot be decrypted, aborting ...')
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pdrlpol = AES.new(plaintext[16:32],AES.MODE_CBC,edclist[2].decode('base64')).decrypt(pdrlpol)
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if ord(pdrlpol[-1]) < 1 or ord(pdrlpol[-1]) > 16:
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raise ADEPTError('Could not decrypt PDRLPol, aborting ...')
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else:
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cutter = -1 * ord(pdrlpol[-1])
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pdrlpol = pdrlpol[:cutter]
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return plaintext[:16]
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|
||||
PASSWORD_PADDING = '(\xbfN^Nu\x8aAd\x00NV\xff\xfa\x01\x08..' \
|
||||
'\x00\xb6\xd0h>\x80/\x0c\xa9\xfedSiz'
|
||||
# experimental aes pw support
|
||||
def initialize_standard(self, password, docid, param):
|
||||
# copy from a global variable
|
||||
V = int_value(param.get('V', 0))
|
||||
if (V <=0 or V > 4):
|
||||
raise PDFEncryptionError('Unknown algorithm: param=%r' % param)
|
||||
length = int_value(param.get('Length', 40)) # Key length (bits)
|
||||
O = str_value(param['O'])
|
||||
R = int_value(param['R']) # Revision
|
||||
if 5 <= R:
|
||||
raise PDFEncryptionError('Unknown revision: %r' % R)
|
||||
U = str_value(param['U'])
|
||||
P = int_value(param['P'])
|
||||
try:
|
||||
EncMetadata = str_value(param['EncryptMetadata'])
|
||||
except:
|
||||
EncMetadata = 'True'
|
||||
self.is_printable = bool(P & 4)
|
||||
self.is_modifiable = bool(P & 8)
|
||||
self.is_extractable = bool(P & 16)
|
||||
self.is_annotationable = bool(P & 32)
|
||||
self.is_formsenabled = bool(P & 256)
|
||||
self.is_textextractable = bool(P & 512)
|
||||
self.is_assemblable = bool(P & 1024)
|
||||
self.is_formprintable = bool(P & 2048)
|
||||
# Algorithm 3.2
|
||||
password = (password+self.PASSWORD_PADDING)[:32] # 1
|
||||
hash = hashlib.md5(password) # 2
|
||||
hash.update(O) # 3
|
||||
hash.update(struct.pack('<l', P)) # 4
|
||||
hash.update(docid[0]) # 5
|
||||
# aes special handling if metadata isn't encrypted
|
||||
if EncMetadata == ('False' or 'false'):
|
||||
hash.update('ffffffff'.decode('hex'))
|
||||
if 5 <= R:
|
||||
# 8
|
||||
for _ in xrange(50):
|
||||
hash = hashlib.md5(hash.digest()[:length/8])
|
||||
key = hash.digest()[:length/8]
|
||||
if R == 2:
|
||||
# Algorithm 3.4
|
||||
u1 = ARC4.new(key).decrypt(password)
|
||||
elif R >= 3:
|
||||
# Algorithm 3.5
|
||||
hash = hashlib.md5(self.PASSWORD_PADDING) # 2
|
||||
hash.update(docid[0]) # 3
|
||||
x = ARC4.new(key).decrypt(hash.digest()[:16]) # 4
|
||||
for i in xrange(1,19+1):
|
||||
k = ''.join( chr(ord(c) ^ i) for c in key )
|
||||
x = ARC4.new(k).decrypt(x)
|
||||
u1 = x+x # 32bytes total
|
||||
if R == 2:
|
||||
is_authenticated = (u1 == U)
|
||||
else:
|
||||
is_authenticated = (u1[:16] == U[:16])
|
||||
if not is_authenticated:
|
||||
raise ADEPTError('Password is not correct.')
|
||||
self.decrypt_key = key
|
||||
# genkey method
|
||||
if V == 1 or V == 2:
|
||||
self.genkey = self.genkey_v2
|
||||
elif V == 3:
|
||||
self.genkey = self.genkey_v3
|
||||
elif V == 4:
|
||||
self.genkey = self.genkey_v2
|
||||
#self.genkey = self.genkey_v3 if V == 3 else self.genkey_v2
|
||||
# rc4
|
||||
if V != 4:
|
||||
self.decipher = self.decipher_rc4 # XXX may be AES
|
||||
# aes
|
||||
elif V == 4 and Length == 128:
|
||||
elf.decipher = self.decipher_aes
|
||||
elif V == 4 and Length == 256:
|
||||
raise PDFNotImplementedError('AES256 encryption is currently unsupported')
|
||||
self.ready = True
|
||||
return
|
||||
|
||||
def initialize_ebx(self, password, docid, param):
|
||||
self.is_printable = self.is_modifiable = self.is_extractable = True
|
||||
with open(password, 'rb') as f:
|
||||
|
|
@ -1452,62 +1542,7 @@ class PDFDocument(object):
|
|||
self.ready = True
|
||||
return
|
||||
|
||||
|
||||
PASSWORD_PADDING = '(\xbfN^Nu\x8aAd\x00NV\xff\xfa\x01\x08..' \
|
||||
'\x00\xb6\xd0h>\x80/\x0c\xa9\xfedSiz'
|
||||
def initialize_standard(self, password, docid, param):
|
||||
V = int_value(param.get('V', 0))
|
||||
if not (V == 1 or V == 2):
|
||||
raise PDFEncryptionError('Unknown algorithm: param=%r' % param)
|
||||
length = int_value(param.get('Length', 40)) # Key length (bits)
|
||||
O = str_value(param['O'])
|
||||
R = int_value(param['R']) # Revision
|
||||
if 5 <= R:
|
||||
raise PDFEncryptionError('Unknown revision: %r' % R)
|
||||
U = str_value(param['U'])
|
||||
P = int_value(param['P'])
|
||||
self.is_printable = bool(P & 4)
|
||||
self.is_modifiable = bool(P & 8)
|
||||
self.is_extractable = bool(P & 16)
|
||||
# Algorithm 3.2
|
||||
password = (password+self.PASSWORD_PADDING)[:32] # 1
|
||||
hash = hashlib.md5(password) # 2
|
||||
hash.update(O) # 3
|
||||
hash.update(struct.pack('<l', P)) # 4
|
||||
hash.update(docid[0]) # 5
|
||||
if 4 <= R:
|
||||
# 6
|
||||
raise PDFNotImplementedError(
|
||||
'Revision 4 encryption is currently unsupported')
|
||||
if 3 <= R:
|
||||
# 8
|
||||
for _ in xrange(50):
|
||||
hash = hashlib.md5(hash.digest()[:length/8])
|
||||
key = hash.digest()[:length/8]
|
||||
if R == 2:
|
||||
# Algorithm 3.4
|
||||
u1 = ARC4.new(key).decrypt(password)
|
||||
elif R == 3:
|
||||
# Algorithm 3.5
|
||||
hash = hashlib.md5(self.PASSWORD_PADDING) # 2
|
||||
hash.update(docid[0]) # 3
|
||||
x = ARC4.new(key).decrypt(hash.digest()[:16]) # 4
|
||||
for i in xrange(1,19+1):
|
||||
k = ''.join( chr(ord(c) ^ i) for c in key )
|
||||
x = ARC4.new(k).decrypt(x)
|
||||
u1 = x+x # 32bytes total
|
||||
if R == 2:
|
||||
is_authenticated = (u1 == U)
|
||||
else:
|
||||
is_authenticated = (u1[:16] == U[:16])
|
||||
if not is_authenticated:
|
||||
raise PDFPasswordIncorrect
|
||||
self.decrypt_key = key
|
||||
self.genkey = self.genkey_v2
|
||||
self.decipher = self.decipher_rc4 # XXX may be AES
|
||||
self.ready = True
|
||||
return
|
||||
|
||||
# genkey functions
|
||||
def genkey_v2(self, objid, genno):
|
||||
objid = struct.pack('<L', objid)[:3]
|
||||
genno = struct.pack('<L', genno)[:2]
|
||||
|
|
@ -1524,12 +1559,45 @@ class PDFDocument(object):
|
|||
hash = hashlib.md5(key)
|
||||
key = hash.digest()[:min(len(self.decrypt_key) + 5, 16)]
|
||||
return key
|
||||
|
||||
# aes v2 and v4 algorithm
|
||||
def genkey_v4(self, objid, genno):
|
||||
objid = struct.pack('<L', objid)[:3]
|
||||
genno = struct.pack('<L', genno)[:2]
|
||||
key = self.decrypt_key + objid + genno + 'sAlT'
|
||||
hash = hashlib.md5(key)
|
||||
key = hash.digest()[:min(len(self.decrypt_key) + 5, 16)]
|
||||
return key
|
||||
|
||||
def decrypt_aes(self, objid, genno, data):
|
||||
key = self.genkey(objid, genno)
|
||||
ivector = data[:16]
|
||||
data = data[16:]
|
||||
plaintext = AES.new(key,AES.MODE_CBC,ivector).decrypt(data)
|
||||
# remove pkcs#5 aes padding
|
||||
cutter = -1 * ord(plaintext[-1])
|
||||
#print cutter
|
||||
plaintext = plaintext[:cutter]
|
||||
return plaintext
|
||||
|
||||
def decrypt_aes256(self, objid, genno, data):
|
||||
key = self.genkey(objid, genno)
|
||||
ivector = data[:16]
|
||||
data = data[16:]
|
||||
plaintext = AES.new(key,AES.MODE_CBC,ivector).decrypt(data)
|
||||
# remove pkcs#5 aes padding
|
||||
cutter = -1 * ord(plaintext[-1])
|
||||
#print cutter
|
||||
plaintext = plaintext[:cutter]
|
||||
return plaintext
|
||||
|
||||
def decrypt_rc4(self, objid, genno, data):
|
||||
key = self.genkey(objid, genno)
|
||||
return ARC4.new(key).decrypt(data)
|
||||
|
||||
|
||||
|
||||
KEYWORD_OBJ = PSKeywordTable.intern('obj')
|
||||
|
||||
def getobj(self, objid):
|
||||
if not self.ready:
|
||||
raise PDFException('PDFDocument not initialized')
|
||||
|
|
@ -1589,6 +1657,17 @@ class PDFDocument(object):
|
|||
(_,genno) = self.parser.nexttoken() # genno
|
||||
#assert objid1 == objid, (objid, objid1)
|
||||
(_,kwd) = self.parser.nexttoken()
|
||||
# #### hack around malformed pdf files
|
||||
# assert objid1 == objid, (objid, objid1)
|
||||
## if objid1 != objid:
|
||||
## x = []
|
||||
## while kwd is not self.KEYWORD_OBJ:
|
||||
## (_,kwd) = self.parser.nexttoken()
|
||||
## x.append(kwd)
|
||||
## if x:
|
||||
## objid1 = x[-2]
|
||||
## genno = x[-1]
|
||||
##
|
||||
if kwd is not self.KEYWORD_OBJ:
|
||||
raise PDFSyntaxError(
|
||||
'Invalid object spec: offset=%r' % index)
|
||||
|
|
@ -1600,6 +1679,7 @@ class PDFDocument(object):
|
|||
self.objs[objid] = obj
|
||||
return obj
|
||||
|
||||
|
||||
class PDFObjStmRef(object):
|
||||
maxindex = 0
|
||||
def __init__(self, objid, stmid, index):
|
||||
|
|
@ -1918,7 +1998,6 @@ class PDFSerializer(object):
|
|||
xrefstm = PDFStream(dic, data)
|
||||
self.serialize_indirect(maxobj, xrefstm)
|
||||
self.write('startxref\n%d\n%%%%EOF' % startxref)
|
||||
|
||||
def write(self, data):
|
||||
self.outf.write(data)
|
||||
self.last = data[-1:]
|
||||
|
|
@ -1995,7 +2074,7 @@ class PDFSerializer(object):
|
|||
|
||||
def cli_main(argv=sys.argv):
|
||||
progname = os.path.basename(argv[0])
|
||||
if RSA is None or ARC4 is None:
|
||||
if RSA is None:
|
||||
print "%s: This script requires OpenSSL or PyCrypto, which must be installed " \
|
||||
"separately. Read the top-of-script comment for details." % \
|
||||
(progname,)
|
||||
|
|
@ -2006,7 +2085,9 @@ def cli_main(argv=sys.argv):
|
|||
keypath, inpath, outpath = argv[1:]
|
||||
with open(inpath, 'rb') as inf:
|
||||
serializer = PDFSerializer(inf, keypath)
|
||||
# hope this will fix the 'bad file descriptor' problem
|
||||
with open(outpath, 'wb') as outf:
|
||||
# help construct to make sure the method runs to the end
|
||||
serializer.dump(outf)
|
||||
return 0
|
||||
|
||||
|
|
@ -2014,7 +2095,8 @@ def cli_main(argv=sys.argv):
|
|||
class DecryptionDialog(Tkinter.Frame):
|
||||
def __init__(self, root):
|
||||
Tkinter.Frame.__init__(self, root, border=5)
|
||||
self.status = Tkinter.Label(self, text='Select files for decryption')
|
||||
ltext='Select file for decryption\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)
|
||||
|
|
@ -2039,6 +2121,8 @@ class DecryptionDialog(Tkinter.Frame):
|
|||
button.grid(row=2, column=2)
|
||||
buttons = Tkinter.Frame(self)
|
||||
buttons.pack()
|
||||
|
||||
|
||||
botton = Tkinter.Button(
|
||||
buttons, text="Decrypt", width=10, command=self.decrypt)
|
||||
botton.pack(side=Tkconstants.LEFT)
|
||||
|
|
@ -2046,6 +2130,7 @@ class DecryptionDialog(Tkinter.Frame):
|
|||
button = Tkinter.Button(
|
||||
buttons, text="Quit", width=10, command=self.quit)
|
||||
button.pack(side=Tkconstants.RIGHT)
|
||||
|
||||
|
||||
def get_keypath(self):
|
||||
keypath = tkFileDialog.askopenfilename(
|
||||
|
|
@ -2053,18 +2138,18 @@ class DecryptionDialog(Tkinter.Frame):
|
|||
defaultextension='.der', filetypes=[('DER-encoded files', '.der'),
|
||||
('All Files', '.*')])
|
||||
if keypath:
|
||||
keypath = os.path.normpath(keypath)
|
||||
keypath = os.path.normpath(os.path.realpath(keypath))
|
||||
self.keypath.delete(0, Tkconstants.END)
|
||||
self.keypath.insert(0, keypath)
|
||||
return
|
||||
|
||||
def get_inpath(self):
|
||||
inpath = tkFileDialog.askopenfilename(
|
||||
parent=None, title='Select ADEPT-encrypted PDF file to decrypt',
|
||||
parent=None, title='Select ADEPT encrypted PDF file to decrypt',
|
||||
defaultextension='.pdf', filetypes=[('PDF files', '.pdf'),
|
||||
('All files', '.*')])
|
||||
if inpath:
|
||||
inpath = os.path.normpath(inpath)
|
||||
inpath = os.path.normpath(os.path.realpath(inpath))
|
||||
self.inpath.delete(0, Tkconstants.END)
|
||||
self.inpath.insert(0, inpath)
|
||||
return
|
||||
|
|
@ -2075,7 +2160,7 @@ class DecryptionDialog(Tkinter.Frame):
|
|||
defaultextension='.pdf', filetypes=[('PDF files', '.pdf'),
|
||||
('All files', '.*')])
|
||||
if outpath:
|
||||
outpath = os.path.normpath(outpath)
|
||||
outpath = os.path.normpath(os.path.realpath(outpath))
|
||||
self.outpath.delete(0, Tkconstants.END)
|
||||
self.outpath.insert(0, outpath)
|
||||
return
|
||||
|
|
@ -2085,7 +2170,8 @@ class DecryptionDialog(Tkinter.Frame):
|
|||
inpath = self.inpath.get()
|
||||
outpath = self.outpath.get()
|
||||
if not keypath or not os.path.exists(keypath):
|
||||
self.status['text'] = 'Specified key file does not exist'
|
||||
# keyfile doesn't exist
|
||||
self.status['text'] = 'Specified Adept key file does not exist'
|
||||
return
|
||||
if not inpath or not os.path.exists(inpath):
|
||||
self.status['text'] = 'Specified input file does not exist'
|
||||
|
|
@ -2096,27 +2182,30 @@ class DecryptionDialog(Tkinter.Frame):
|
|||
if inpath == outpath:
|
||||
self.status['text'] = 'Must have different input and output files'
|
||||
return
|
||||
# patch for non-ascii characters
|
||||
argv = [sys.argv[0], keypath, inpath, outpath]
|
||||
self.status['text'] = 'Decrypting...'
|
||||
self.status['text'] = 'Processing ...'
|
||||
try:
|
||||
cli_main(argv)
|
||||
except Exception, e:
|
||||
self.status['text'] = 'Error: ' + str(e)
|
||||
except Exception, a:
|
||||
self.status['text'] = 'Error: ' + str(a)
|
||||
return
|
||||
self.status['text'] = 'File successfully decrypted'
|
||||
self.status['text'] = 'File successfully decrypted.\n'+\
|
||||
'Close this window or decrypt another pdf file.'
|
||||
return
|
||||
|
||||
def gui_main():
|
||||
root = Tkinter.Tk()
|
||||
if RSA is None or ARC4 is None:
|
||||
if RSA is None:
|
||||
root.withdraw()
|
||||
tkMessageBox.showerror(
|
||||
"INEPT PDF Decrypter",
|
||||
"INEPT PDF",
|
||||
"This script requires OpenSSL or PyCrypto, which must be installed "
|
||||
"separately. Read the top-of-script comment for details.")
|
||||
return 1
|
||||
root.title('INEPT PDF Decrypter')
|
||||
root.resizable(True, False)
|
||||
root.minsize(300, 0)
|
||||
root.minsize(370, 0)
|
||||
DecryptionDialog(root).pack(fill=Tkconstants.X, expand=1)
|
||||
root.mainloop()
|
||||
return 0
|
||||
|
|
|
|||
Loading…
Reference in New Issue