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#
# p7zr library
#
# Copyright (c) 2019 Hiroshi Miura <miurahr@linux.com>
# Copyright (c) 2004-2015 by Joachim Bauch, mail@joachim-bauch.de
# 7-Zip Copyright (C) 1999-2010 Igor Pavlov
# LZMA SDK Copyright (C) 1999-2010 Igor Pavlov
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import binascii
from enum import Enum
from typing import Optional
MAGIC_7Z = binascii.unhexlify('377abcaf271c')
FINISH_7Z = binascii.unhexlify('377abcaf271d')
READ_BLOCKSIZE = 32248
QUEUELEN = READ_BLOCKSIZE * 2
READ_BLOCKSIZE = 32248
class ByteEnum(bytes, Enum):
pass
class Property(ByteEnum):
"""Hold 7zip property fixed values."""
END = binascii.unhexlify('00')
HEADER = binascii.unhexlify('01')
ARCHIVE_PROPERTIES = binascii.unhexlify('02')
ADDITIONAL_STREAMS_INFO = binascii.unhexlify('03')
MAIN_STREAMS_INFO = binascii.unhexlify('04')
FILES_INFO = binascii.unhexlify('05')
PACK_INFO = binascii.unhexlify('06')
UNPACK_INFO = binascii.unhexlify('07')
SUBSTREAMS_INFO = binascii.unhexlify('08')
SIZE = binascii.unhexlify('09')
CRC = binascii.unhexlify('0a')
FOLDER = binascii.unhexlify('0b')
CODERS_UNPACK_SIZE = binascii.unhexlify('0c')
NUM_UNPACK_STREAM = binascii.unhexlify('0d')
EMPTY_STREAM = binascii.unhexlify('0e')
EMPTY_FILE = binascii.unhexlify('0f')
ANTI = binascii.unhexlify('10')
NAME = binascii.unhexlify('11')
CREATION_TIME = binascii.unhexlify('12')
LAST_ACCESS_TIME = binascii.unhexlify('13')
LAST_WRITE_TIME = binascii.unhexlify('14')
ATTRIBUTES = binascii.unhexlify('15')
COMMENT = binascii.unhexlify('16')
ENCODED_HEADER = binascii.unhexlify('17')
START_POS = binascii.unhexlify('18')
DUMMY = binascii.unhexlify('19')
class CompressionMethod(ByteEnum):
"""Hold fixed values for method parameter."""
COPY = binascii.unhexlify('00')
DELTA = binascii.unhexlify('03')
BCJ = binascii.unhexlify('04')
PPC = binascii.unhexlify('05')
IA64 = binascii.unhexlify('06')
ARM = binascii.unhexlify('07')
ARMT = binascii.unhexlify('08')
SPARC = binascii.unhexlify('09')
# SWAP = 02..
SWAP2 = binascii.unhexlify('020302')
SWAP4 = binascii.unhexlify('020304')
# 7Z = 03..
LZMA = binascii.unhexlify('030101')
PPMD = binascii.unhexlify('030401')
P7Z_BCJ = binascii.unhexlify('03030103')
P7Z_BCJ2 = binascii.unhexlify('0303011B')
BCJ_PPC = binascii.unhexlify('03030205')
BCJ_IA64 = binascii.unhexlify('03030401')
BCJ_ARM = binascii.unhexlify('03030501')
BCJ_ARMT = binascii.unhexlify('03030701')
BCJ_SPARC = binascii.unhexlify('03030805')
LZMA2 = binascii.unhexlify('21')
# MISC : 04..
MISC_ZIP = binascii.unhexlify('0401')
MISC_BZIP2 = binascii.unhexlify('040202')
MISC_DEFLATE = binascii.unhexlify('040108')
MISC_DEFLATE64 = binascii.unhexlify('040109')
MISC_Z = binascii.unhexlify('0405')
MISC_LZH = binascii.unhexlify('0406')
NSIS_DEFLATE = binascii.unhexlify('040901')
NSIS_BZIP2 = binascii.unhexlify('040902')
#
MISC_ZSTD = binascii.unhexlify('04f71101')
MISC_BROTLI = binascii.unhexlify('04f71102')
MISC_LZ4 = binascii.unhexlify('04f71104')
MISC_LZS = binascii.unhexlify('04f71105')
MISC_LIZARD = binascii.unhexlify('04f71106')
# CRYPTO 06..
CRYPT_ZIPCRYPT = binascii.unhexlify('06f10101')
CRYPT_RAR29AES = binascii.unhexlify('06f10303')
CRYPT_AES256_SHA256 = binascii.unhexlify('06f10701')
class SupportedMethods:
"""Hold list of methods which python3 can support."""
formats = [{'name': "7z", 'magic': MAGIC_7Z}]
codecs = [{'id': CompressionMethod.LZMA, 'name': "LZMA"},
{'id': CompressionMethod.LZMA2, 'name': "LZMA2"},
{'id': CompressionMethod.DELTA, 'name': "DELTA"},
{'id': CompressionMethod.P7Z_BCJ, 'name': "BCJ"},
{'id': CompressionMethod.BCJ_PPC, 'name': 'PPC'},
{'id': CompressionMethod.BCJ_IA64, 'name': 'IA64'},
{'id': CompressionMethod.BCJ_ARM, 'name': "ARM"},
{'id': CompressionMethod.BCJ_ARMT, 'name': "ARMT"},
{'id': CompressionMethod.BCJ_SPARC, 'name': 'SPARC'}
]
# this class is Borg/Singleton
class ArchivePassword:
_shared_state = {
'_password': None,
}
def __init__(self, password: Optional[str] = None):
self.__dict__ = self._shared_state
if password is not None:
self._password = password
def set(self, password):
self._password = password
def get(self):
if self._password is not None:
return self._password
else:
return ''
def __str__(self):
if self._password is not None:
return self._password
else:
return ''
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