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897955f0a1
* Removed all __future__ imports from code * Removed all six dependencies * Removed all future_builtins imports * Removed all Python 2 related code Closes: deluge-torrent/deluge#325
100 lines
2.8 KiB
Python
100 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2009-2010 John Garland <johnnybg+deluge@gmail.com>
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#
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# This file is part of Deluge and is licensed under GNU General Public License 3.0, or later, with
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# the additional special exception to link portions of this program with the OpenSSL library.
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# See LICENSE for more details.
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#
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import logging
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import re
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from deluge.common import decode_bytes
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from .common import IP, BadIP, raises_errors_as
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log = logging.getLogger(__name__)
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class ReaderParseError(Exception):
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pass
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class BaseReader(object):
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"""Base reader for blocklist files"""
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def __init__(self, _file):
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"""Creates a new BaseReader given a file"""
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self.file = _file
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def open(self):
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"""Opens the associated file for reading"""
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return open(self.file)
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def parse(self, line):
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"""Extracts ip range from given line"""
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raise NotImplementedError
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def read(self, callback):
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"""Calls callback on each ip range in the file"""
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for start, end in self.readranges():
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try:
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callback(IP.parse(start), IP.parse(end))
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except BadIP as ex:
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log.error('Failed to parse IP: %s', ex)
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return self.file
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def is_ignored(self, line):
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"""Ignore commented lines and blank lines"""
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line = line.strip()
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return line.startswith('#') or not line
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def is_valid(self):
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"""Determines whether file is valid for this reader"""
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blocklist = self.open()
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valid = True
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for line in blocklist:
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line = decode_bytes(line)
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if not self.is_ignored(line):
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try:
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(start, end) = self.parse(line)
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if not re.match(r'^(\d{1,3}\.){4}$', start + '.') or not re.match(
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r'^(\d{1,3}\.){4}$', end + '.'
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):
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valid = False
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except Exception:
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valid = False
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break
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blocklist.close()
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return valid
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@raises_errors_as(ReaderParseError)
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def readranges(self):
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"""Yields each ip range from the file"""
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blocklist = self.open()
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for line in blocklist:
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line = decode_bytes(line)
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if not self.is_ignored(line):
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yield self.parse(line)
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blocklist.close()
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class EmuleReader(BaseReader):
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"""Blocklist reader for emule style blocklists"""
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def parse(self, line):
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return line.strip().split(' , ')[0].split(' - ')
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class SafePeerReader(BaseReader):
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"""Blocklist reader for SafePeer style blocklists"""
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def parse(self, line):
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return line.strip().split(':')[-1].split('-')
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class PeerGuardianReader(SafePeerReader):
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"""Blocklist reader for PeerGuardian style blocklists"""
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pass
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