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bc.py
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bc.py
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import sys
if sys.version_info < (3, 6):
print("Error: This script requires Python 3.6 or later.")
sys.exit(1)
import argparse
import ipaddress
import os
from abc import ABC, abstractmethod
class LineParser(ABC):
def __init__(self, strip_ipv6=False):
self.strip_ipv6 = strip_ipv6
@abstractmethod
def parse_line(self, line):
pass
class LineFormatter(ABC):
@abstractmethod
def format_line(self, parsed_line):
pass
class ParsedLine:
def __init__(self, label, ip1, ip2, ddd):
self.label = label
self.ip1 = ip1
self.ip2 = ip2
self.ddd = ddd
def __repr__(self):
return (f"ParsedLine(label={self.label}, ip1={self.ip1}, "
f"ip2={self.ip2}, ddd={self.ddd})")
def normalize_ip(ip):
try:
if '.' in ip:
ip = '.'.join(str(int(octet)) for octet in ip.split('.'))
normalized_ip = ipaddress.ip_address(ip)
return str(normalized_ip)
except ValueError:
raise ValueError(f"Invalid IP address: {ip}")
class P2PParser(LineParser):
def parse_line(self, line):
line = line.strip()
if not line or line.startswith("#"):
return None
split_line = line.rsplit('-', 1)
if len(split_line) != 2:
return None
label_and_ip1 = split_line[0]
ip2 = split_line[1]
if ':' not in ip2:
label_ip1_split = label_and_ip1.rsplit(':', 1)
if len(label_ip1_split) != 2:
return None
label = label_ip1_split[0]
ip1 = label_ip1_split[1]
try:
ip1_normalized = normalize_ip(ip1)
ip2_normalized = normalize_ip(ip2)
except ValueError:
return None
else:
remaining = label_and_ip1
while remaining:
label_ip1_split = remaining.split(':', 1)
if len(label_ip1_split) != 2:
return None
label_candidate = label_ip1_split[0]
ip1_candidate = label_ip1_split[1]
try:
ip1_normalized = normalize_ip(ip1_candidate)
label = label_candidate
break
except ValueError:
if ':' not in ip1_candidate:
return None
remaining = label_candidate + ':' + ip1_candidate.split(':', 1)[1]
try:
ip2_normalized = normalize_ip(ip2)
except ValueError:
return None
if self.strip_ipv6:
return None
return ParsedLine(label, ip1_normalized, ip2_normalized, "000")
class DATParser(LineParser):
def parse_line(self, line):
line = line.strip()
if not line or line.startswith("#"):
return None
parts = line.split(',', 2)
if len(parts) != 3:
return None
ip_part, ddd_part, label = [part.strip() for part in parts]
ip1, ip2 = map(str.strip, ip_part.split('-', 1))
if len(ip1) == 0 or len(ip2) == 0:
return None
try:
ip1_normalized = normalize_ip(ip1)
ip2_normalized = normalize_ip(ip2)
except ValueError:
return None
if self.strip_ipv6 and ':' in ip1_normalized:
return None
if not (ddd_part.isdigit() and len(ddd_part) == 3):
return None
ddd = ddd_part
return ParsedLine(label, ip1_normalized, ip2_normalized, ddd)
class DATFormatter(LineFormatter):
def format_line(self, parsed_line):
if parsed_line is None:
return ""
return f"{parsed_line.ip1} - {parsed_line.ip2} , {parsed_line.ddd} , {parsed_line.label}"
class P2PFormatter(LineFormatter):
def format_line(self, parsed_line):
if parsed_line is None:
return ""
return f"{parsed_line.label}:{parsed_line.ip1}-{parsed_line.ip2}"
def get_parser_and_formatter(input_file, strip_ipv6):
input_ext = os.path.splitext(input_file)[1].lower()
if input_ext == '.p2p':
return P2PParser(strip_ipv6), DATFormatter(), os.path.splitext(input_file)[0] + '.dat'
elif input_ext == '.dat':
return DATParser(strip_ipv6), P2PFormatter(), os.path.splitext(input_file)[0] + '.p2p'
else:
raise ValueError(f"Unsupported input file format: {input_ext}")
def parse_and_convert_file(input_filename, output_filename, parser, formatter):
try:
ipv6_bypass_count = 0
with open(input_filename, 'r', encoding='utf-8') as infile, open(output_filename, 'w', encoding='utf-8') as outfile:
for line in infile:
parsed_line = parser.parse_line(line)
if parsed_line:
formatted_line = formatter.format_line(parsed_line)
if formatted_line:
outfile.write(f"{formatted_line}\n")
elif parser.strip_ipv6:
ipv6_bypass_count += 1
else:
print(f"Failed to parse line: {line.strip()}")
if parser.strip_ipv6:
print(f"Stripped {ipv6_bypass_count} lines with ipv6 adresses.")
except UnicodeDecodeError as e:
print(f"Error reading file {input_filename}: {e}")
def main():
parser = argparse.ArgumentParser(description="Parse and convert files based on format.")
parser.add_argument(
'--input_file',
type=str,
required=True,
help="The input file to parse."
)
parser.add_argument(
'--strip_ipv6',
action='store_true',
help="Strip IPv6 addresses from the output file."
)
args = parser.parse_args()
input_file = args.input_file
strip_ipv6 = args.strip_ipv6
try:
file_parser, file_formatter, output_file = get_parser_and_formatter(input_file, strip_ipv6)
parse_and_convert_file(input_file, output_file, file_parser, file_formatter)
print(f"Processing completed. Output saved to: {output_file}")
except ValueError as e:
print(f"Error: {e}")
if __name__ == '__main__':
main()