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d94b56e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | # -*- coding: utf-8 -*-
#
# pyhwp : hwp file format parser in python
# Copyright (C) 2010-2023 mete0r <https://github.com/mete0r>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import
from __future__ import print_function
from __future__ import unicode_literals
from binascii import b2a_hex
from functools import partial
from subprocess import CalledProcessError
from subprocess import Popen
import logging
import os
import subprocess
import tempfile
from . import _lxml
from . import _uno
from . import gir_gsf
from . import javax_transform
from . import jython_poifs
from . import olefileio
from . import xmllint
from . import xsltproc
logger = logging.getLogger(__name__)
def get_xslt():
if javax_transform.is_enabled():
return javax_transform.xslt
if _lxml.is_enabled():
return _lxml.xslt
if xsltproc.is_enabled():
return xsltproc.xslt
if _uno.is_enabled():
return _uno.xslt
def get_xslt_compile():
modules = [
javax_transform,
_lxml,
xsltproc,
_uno
]
for module in modules:
if module.is_enabled():
xslt_compile = getattr(module, 'xslt_compile', None)
if xslt_compile:
return xslt_compile
xslt = getattr(module, 'xslt', None)
if xslt:
def xslt_compile(xsl_path):
return partial(xslt, xsl_path)
def get_relaxng():
if _lxml.is_enabled():
return _lxml.relaxng
if xmllint.is_enabled():
return xmllint.relaxng
def get_relaxng_compile():
modules = [
_lxml,
xmllint,
]
for module in modules:
if module.is_enabled():
relaxng_compile = getattr(module, 'relaxng_compile', None)
if relaxng_compile:
return relaxng_compile
relaxng = getattr(module, 'relaxng', None)
if relaxng:
def relaxng_compile(rng_path):
return partial(relaxng, rng_path)
def get_olestorage_class():
if jython_poifs.is_enabled():
return jython_poifs.OleStorage
if olefileio.is_enabled():
return olefileio.OleStorage
if _uno.is_enabled():
return _uno.OleStorage
if gir_gsf.is_enabled():
return gir_gsf.OleStorage
def get_aes128ecb_decrypt():
try:
return get_aes128ecb_decrypt_cryptography()
except Exception:
pass
try:
return get_aes128ecb_decrypt_javax()
except Exception:
pass
try:
return get_aes128ecb_decrypt_openssl()
except Exception:
pass
raise NotImplementedError('aes128ecb_decrypt')
def get_aes128ecb_decrypt_cryptography():
from cryptography.hazmat.primitives.ciphers import Cipher
from cryptography.hazmat.primitives.ciphers import algorithms
from cryptography.hazmat.primitives.ciphers import modes
from cryptography.hazmat.backends import default_backend
def decrypt(key, ciphertext):
backend = default_backend()
cipher = Cipher(algorithms.AES(key), modes.ECB(), backend=backend)
decryptor = cipher.decryptor()
return decryptor.update(ciphertext) + decryptor.finalize()
return decrypt
def get_aes128ecb_decrypt_javax():
from javax.crypto import Cipher
from javax.crypto.spec import SecretKeySpec
def decrypt(key, ciphertext):
secretkey = SecretKeySpec(key, 'AES')
cipher = Cipher.getInstance('AES/ECB/NoPadding')
cipher.init(Cipher.DECRYPT_MODE, secretkey)
decrypted = cipher.doFinal(ciphertext)
return decrypted.tostring()
return decrypt
def get_aes128ecb_decrypt_openssl():
if not openssl_reachable():
raise NotImplementedError()
def decrypt(key, ciphertext):
fd, name = tempfile.mkstemp()
fp = os.fdopen(fd, 'wb')
try:
fp.write(ciphertext)
finally:
fp.close()
args = [
'openssl',
'enc',
'-d',
'-in',
name,
'-aes-128-ecb',
'-K',
b2a_hex(key),
'-nopad',
]
try:
p = Popen(args, stdout=subprocess.PIPE)
try:
return p.stdout.read()
finally:
p.wait()
p.stdout.close()
finally:
os.unlink(name)
return decrypt
def openssl_reachable():
args = ['openssl', 'version']
try:
subprocess.check_output(args)
except OSError:
return False
except CalledProcessError:
return False
except Exception as e:
logger.exception(e)
return False
else:
return True
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