92 lines
2.6 KiB
Python
92 lines
2.6 KiB
Python
import re
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import gzip
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from crypt import *
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class Backup:
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key = None
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compressMinSize = "50M"
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save_location = None
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def __init__(self, key):
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self.key = key
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def recurse(self, path):
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min_size = parse_size(self.compressMinSize)
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for f in os.listdir(path):
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uri = os.path.join(path, f)
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if os.path.isfile(uri):
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size = os.path.getsize(uri)
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print(f + " : ", human_size(size))
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if size > min_size:
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enc = crypt(compress(uri), self.key)
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else:
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enc = crypt(uri, self.key)
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save(enc, os.path.join(self.save_location, f + ".enc"))
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elif os.path.isdir(uri):
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self.recurse(uri)
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def compress(file):
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if type(file) is str:
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infile = open(file, 'rb')
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elif type(file) is io.BufferedRandom or tempfile.SpooledTemporaryFile:
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file.seek(0)
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infile = file
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compressed_file = tempfile.SpooledTemporaryFile()
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with gzip.open(compressed_file, 'wb') as zipfile:
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while chunk := infile.read(64 * 1024):
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zipfile.write(chunk)
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return compressed_file
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def uncompress(file):
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if type(file) is io.BufferedRandom or tempfile.SpooledTemporaryFile:
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file.seek(0)
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decompressed_file = tempfile.SpooledTemporaryFile()
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with gzip.open(file, 'rb') as zipfile:
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while chunk := zipfile.read(64 * 1024):
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decompressed_file.write(chunk)
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return decompressed_file
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def crypt(file, key):
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encrypted_file = tempfile.SpooledTemporaryFile()
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encrypt_file(key, file, encrypted_file)
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return encrypted_file
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def uncrypt(file, key):
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decrypted_file = tempfile.SpooledTemporaryFile()
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decrypt_file(key, file, decrypted_file)
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return decrypted_file
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def save(file, name):
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if type(file) is io.BufferedRandom or tempfile.SpooledTemporaryFile:
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file.seek(0)
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with open(name, 'wb') as save:
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while chunk := file.read(64 * 1024):
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save.write(chunk)
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else:
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print("Unable to save " + str(file) + " of type " + str(type(file)))
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return
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def human_size(size, decimal_places=0):
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for unit in ['B', 'K', 'M', 'G', 'T']:
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if size < 1024.0:
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break
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size /= 1024.0
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return f"{size:.{decimal_places}f}{unit}"
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def parse_size(size):
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units = {"B": 1, "K": 2**10, "M": 2**20, "G": 2**30, "T": 2**40}
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if size[-1].isdigit():
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size = size + 'K'
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number, unit = re.match(r"([0-9]+)([BKMGT])", size, re.I).groups()
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return int(float(number)*units[unit])
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