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'''
Adapted from OpenAssistant's original xor_codec.py:
https://huggingface.co/OpenAssistant/oasst-sft-6-llama-30b-xor/raw/main/xor_codec.py
'''
import os
import sys
import gzip
import numpy
from pathlib import Path
def xor_uncompressed(dst, src_payload, src_base, block_size=4096):
fp_payload = open(src_payload, 'rb')
fp_base = open(src_base, 'rb')
with open(dst, 'wb') as fp:
while True:
buf1 = numpy.array(bytearray(fp_payload.read(block_size)), dtype=numpy.uint8)
buf2 = numpy.array(bytearray(fp_base.read(block_size)), dtype=numpy.uint8)
padding = len(buf1) - len(buf2)
if padding > 0: buf2 = numpy.pad(buf2, (0, padding), 'constant', constant_values=(0,))
if padding < 0: buf2 = buf2[:len(buf1)]
buf = numpy.bitwise_xor(buf1, buf2)
fp.write(buf)
if len(buf1) < block_size: break
fp_payload.close()
fp_base.close()
def xor_encode(dst, src_payload, src_base, block_size=4096):
fp_payload = open(src_payload, 'rb')
fp_base = open(src_base, 'rb')
with gzip.open(dst, 'wb') as fp:
while True:
buf1 = numpy.array(bytearray(fp_payload.read(block_size)), dtype=numpy.uint8)
buf2 = numpy.array(bytearray(fp_base.read(block_size)), dtype=numpy.uint8)
padding = len(buf1) - len(buf2)
if padding > 0: buf2 = numpy.pad(buf2, (0, padding), 'constant', constant_values=(0,))
if padding < 0: buf2 = buf2[:len(buf1)]
buf = numpy.bitwise_xor(buf1, buf2)
fp.write(buf)
if len(buf1) < block_size: break
fp_payload.close()
fp_base.close()
def xor_decode(dst, src_payload, src_base, block_size=4096):
fp_payload = gzip.open(src_payload, 'rb')
fp_base = open(src_base, 'rb')
with open(dst, 'wb') as fp:
while True:
buf1 = numpy.array(bytearray(fp_payload.read(block_size)), dtype=numpy.uint8)
buf2 = numpy.array(bytearray(fp_base.read(block_size)), dtype=numpy.uint8)
padding = len(buf1) - len(buf2)
if padding > 0: buf2 = numpy.pad(buf2, (0, padding), 'constant', constant_values=(0,))
if padding < 0: buf2 = buf2[:len(buf1)]
buf = numpy.bitwise_xor(buf1, buf2)
fp.write(buf)
if len(buf1) < block_size: break
fp_payload.close()
fp_base.close()
def xor_dir(dst, src_payload, src_base, decode=True, compress=True):
if compress:
xor = xor_decode if decode else xor_encode
else:
xor = xor_uncompressed
Path(dst).mkdir(parents=True, exist_ok=True)
for path in os.listdir(src_payload):
print("[*] Processing '%s'" % path)
try:
xor("%s/%s" % (dst, path), "%s/%s" % (src_payload, path), "%s/%s" % (src_base, path))
except Exception as e:
print("Exception when processing '%s'" % path)
if __name__ == "__main__":
if len(sys.argv) < 4:
print("Usage: xor.py <DESTINATION> <PAYLOAD SOURCE> <LLAMA SOURCE> [--encode] [--compress]")
exit()
dst = sys.argv[1]
src_payload = sys.argv[2]
src_base = sys.argv[3]
decode = True
compress = False
if len(sys.argv) > 4:
for arg in sys.argv[4:]:
if arg == "--encode": decode = False
if arg == "--compress": compress = True
xor_dir(dst, src_payload, src_base, decode=decode, compress=compress)
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