commit 385b7314ee787117aea7c17b5d951e126533f2c9
Author: Fijxu <fijxu@nadeko.net>
Date:   Sat Mar 1 00:56:54 2025 -0300

    add retard asn blocker python script
    
    supports nginx, iptables, ansible and a simplelist

diff --git a/asn-block-generator.py b/asn-block-generator.py
new file mode 100644
index 0000000..d3a0c9f
--- /dev/null
+++ b/asn-block-generator.py
@@ -0,0 +1,100 @@
+# Requires at least python 3.10
+
+import requests
+import argparse
+
+# This source code is copyright Jeff Martin and contributing authors
+# and is released under the AGPL license.
+# https://www.gnu.org/licenses/agpl-3.0.en.html
+# Modified by Fijxu for it's own purposes
+class IPParser:
+	def __init__(self, ip_list):
+		self.ip_v4 = []
+		self.ip_v6 = []
+		self.ip_list = ip_list
+		self.ip_list = self.ip_list.splitlines()
+
+	def parse(self):
+		# string should be one line per entry, eg:
+		# 129.134.173.0/24
+		# 2a03:2887:ff1e::/48
+		for line in self.ip_list:
+			self.parse_ip(line)
+		self.write()
+
+	def parse_ip(self, line):
+		line = line.strip()
+		if ':' in line:
+			self.ip_v6.append(line)
+		elif '.' in line:
+			self.ip_v4.append(line)
+		else:
+			raise Exception('unrecognized IP range: %s' % line)
+
+	def write(self):
+		match args.format:
+			case "nginx":
+				print("Using NGINX format")
+				self.writeNginx()
+				return
+			case "iptables":
+				print("Using IPTables format")
+				self.writeIptables()
+				return
+			case "simplelist":
+				print("Using simplelist format")
+				self.writeSimplelist()
+				return
+			case "ansible":
+				print("Using Ansible format")
+				self.writeAnsible()
+				return
+			case _:
+				print("Select a format! (nginx, iptables, simplelist, ansible)")
+				exit(1)
+
+	def writeNginx(self):
+		with open(f'{args.asn}-nginx-denylist-ipv4.conf', 'w') as f:
+			for ip in self.ip_v4:
+				f.write('deny %s;\n' % ip)
+
+		with open(f'{args.asn}-nginx-denylist-ipv6.conf', 'w') as f:
+			for ip in self.ip_v6:
+				f.write('deny %s;\n' % ip)
+
+	def writeIptables(self):
+		with open(f'{args.asn}-iptables-ipv4.txt', 'w') as f:
+			for ip in self.ip_v4:
+				f.write('-A INPUT -s %s -j DROP\n' % ip)
+
+		with open(f'{args.asn}-iptables-ipv6.txt', 'w') as f:
+			for ip in self.ip_v6:
+				f.write('-A INPUT -s %s -j DROP\n' % ip)
+
+	def writeSimplelist(self):
+		with open(f'{args.asn}-ipv4.txt', 'w') as f:
+			for ip in self.ip_v4:
+				f.write('%s\n' % ip)
+
+		with open(f'{args.asn}-ipv6.conf', 'w') as f:
+			for ip in self.ip_v6:
+				f.write('%s\n' % ip)
+
+	def writeAnsible(self):
+		with open(f'{args.asn}-ansible-ipv4.txt', 'w') as f:
+			for ip in self.ip_v4:
+				f.write('- %s\n' % ip)
+
+		with open(f'{args.asn}-ansible-ipv6.txt', 'w') as f:
+			for ip in self.ip_v6:
+				f.write('- %s\n' % ip)
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-a", "--asn", help="The AS number you want to block. Ex: --asn 1234")
+parser.add_argument("-f", "--format", help="In which format the list should output (nginx, iptables, simpletlist)")
+parser.add_argument("-o", "--output", help="Where do you want your file to be?")
+args = parser.parse_args()
+
+req = x = requests.get(f"https://www.enjen.net/asn-blocklist/index.php?asn={args.asn}&type=iplist&api=1")
+ip_parser = IPParser(req.text)
+ip_parser.parse()