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import ipaddress
import re
from random import random
from timeout_decorator import timeout
import typing
import zmap_wrapper
def enumerate_IP_range(ip_range: str):
"""
Args:
ip_range (str): IP range in notation "start_ip-end_ip"
Returns:
List[str]: List of IP addresses in the range
"""
start_ip, end_ip = ip_range.split("-")
start_ip = ipaddress.ip_address(ip_range.split("-")[0])
end_ip = ipaddress.ip_address(ip_range.split("-")[1])
return [str(ipaddress.ip_address(ip)) for ip in range(int(start_ip), int(end_ip) + 1)]
def test_enumerate_IP_range():
ip_range = "189.23.45.32-189.23.45.34" # range
expected_ips = [
"189.23.45.32",
"189.23.45.33",
"189.23.45.34",
]
assert enumerate_IP_range(ip_range) == expected_ips
def enumerate_port_range(port_range: str):
"""
Args:
port_range (str): Port range in notation "start_port-end_port"
Returns:
List[int]: List of ports in the range
"""
start_port, end_port = port_range.split("-")
return list(str(i) for i in range(int(start_port), int(end_port) + 1))
def test_enumerate_port_range():
port_range = "22-25" # range
expected_ports = ["22", "23", "24", "25"]
assert enumerate_port_range(port_range) == expected_ports
## utils
def check_uniqueness_ip_list(ip_list):
"""
Args:
ip_list (List(str)): List of IP addresses
Returns:
bool: True if all IPs are unique, False otherwise
"""
return len(ip_list) == len(set(ip_list))
def test_check_uniqueness_ip_list():
ip_list = [
"1.1.1.1",
"1.1.1.1"
]
assert not check_uniqueness_ip_list(ip_list)
ip_list = ["1.1.1.1"]
assert check_uniqueness_ip_list(ip_list)
def check_coverage_of_ip_list(ip_list: typing.List[str], subnet: str):
"""
Checks if a list of IPs fully covers a subnet
Args:
ip_list (List(str)): List of IP addresses
subnet (str): subnet in CIDR notation
Returns:
bool: True if all IPs in subnet are present in ip_list, False otherwise
"""
# Convert the subnet string to an ipaddress object
subnet = ipaddress.ip_network(subnet)
# Convert the list of IPs to ipaddress objects
ip_objects = {ipaddress.ip_address(ip) for ip in ip_list}
# Check if all IPs in the subnet are covered by the IP list
for ip in subnet.hosts():
if ip not in ip_objects:
return False
return True
def test_check_coverage_of_ip_list():
ip_list = [
"192.168.1.0",
"192.168.1.1",
"192.168.1.2",
"192.168.1.3",
]
subnet = "192.168.1.0/30"
assert check_coverage_of_ip_list(ip_list, subnet)
ip_list = [
"192.168.1.0",
"192.168.1.2",
"192.168.1.3",
]
assert not check_coverage_of_ip_list(ip_list, subnet)
def parse_ports_string(port_string) -> typing.List[str]:
"""
Parses a string of ports in the format "22-25,80,443" into a list of individual ports
Args:
port_string (str): String of ports in the format "22-25,80,443"
Returns:
List[str]: List of individual ports
"""
ports = []
# Regular expression to match individual ports or port ranges
pattern = re.compile(r'(\d+)-(\d+)|(\d+)')
matches = pattern.findall(port_string)
for match in matches:
if match[0]: # If it's a port range
start = int(match[0])
end = int(match[1])
ports.extend(range(start, end + 1))
else: # If it's a single port
ports.append(int(match[2]))
return [str(port) for port in ports]
def test_parse_ports_string():
tests = {
"22": ["22"],
"22-25": ["22", "23", "24", "25"],
"22,80": ["22", "80"],
"24-28,443,34,8080-8085": ["24", "25", "26", "27", "28", "443", "34", "8080",
"8081", "8082", "8083", "8084", "8085"]
}
for t in tests:
output = parse_ports_string(t)
expected_output = tests[t]
assert len(output) == len(expected_output), "lists don't match in length"
output.sort()
expected_output.sort()
for i in range(len(output)):
assert output[i] == expected_output[i], "lists do not match"
@timeout(5) # bounding the runtime of the test so we don't get a stalled Github action should a failure occur in ZMap
def bounded_runtime_test(t: zmap_wrapper.Wrapper):
return t.run()
def write_ips_to_file(num_of_ips, filename):
"""
Writes a list of public, non-blocked IPs to a file
Args:
num_of_ips (int): Number of IPs to write to the file
filename (str): File to write the IPs to
Returns:
List of IPs written to the file, as strings
"""
subnet_pattern = r'\b(?:\d{1,3}\.){3}\d{1,3}/\d{1,2}\b'
# read in blocked subnets in file "blocklist.conf" into a list
blocked_subnets = []
with open("../../conf/blocklist.conf", "r") as file:
for line in file:
if not line.startswith("#") and "/" in line:
# need to use a regex to pull out the subnet
subnet = re.findall(subnet_pattern, line.strip())
if subnet:
blocked_subnets.append(subnet[0])
# generate a list of num_of_ips random, non-blocked public IPs
ips = set()
for _ in range(num_of_ips):
while True:
ip = str(ipaddress.IPv4Address(int(2 ** 32 * random())))
# ensure the IP is not in the blocklist
if any(ipaddress.ip_address(ip) in ipaddress.ip_network(subnet) for subnet in blocked_subnets):
# IP is blocked
continue
if ipaddress.ip_address(ip).is_global and not ipaddress.ip_address(ip).is_reserved and ip not in ips:
# found a good IP
ips.add(ip)
break
# write the IPs to a file
with open(filename, "w") as file:
for ip in ips:
file.write(ip + "\n")
return ips
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