PyNesca/modules/address_generation/Parser.py

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import ipaddress
from core.prototypes.AbstractParser import AbstractParser
class Parser(AbstractParser):
def parse_fields(self, ports:'port_field', ips:'address_field') -> {'ipv4_objects',
'ports'}:
result = dict()
result['ports'] = self.parse_port_field(ports)
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result['ipv4_objects'] = self.get_all_addresses(ips)
return result
def parse_port_field(self, ports):
"""
Parses ports from string, returns them as integers in the list.
Handles non-existent ports and non-port values.
"""
if ports:
# Using set to avoid repetitions
parsed = set()
ports = ports.split(",")
for port in ports:
try:
# Input is in range form ("100-200"):
if '-' in port:
start, end = map(int, port.split('-'))
parsed.update(
[p for p in range(start, end + 1) if 65355 >= p > 0])
# Input is a single port ("80"):
else:
parsed.add(int(port))
except ValueError as e:
# If we get any not integer just ignore it
pass
return sorted(list(parsed))
else:
# Change to default ports from constant
return [21, 22, 23, 25, 80, 443, 110, 111, 135, 139, 445, 8080, 8443, 53, 143, 989, 990, 3306, 1080, 5554, 6667, 2222, 4444, 666, 6666, 1337, 2020, 31337]
def parse_address_field(self, ips):
"""
Parses ip input string, returns the generator over them.
Supports next inputs:
1) 1.2.3.4
2) 192.168.0.0/24
3) 1.2.3.4 - 5.6.7.8
Any non-ip value will be ignored.
"""
# A set to contain non repeating ip objects from ipaddress
for ip_obj in self.get_all_addresses():
# The object is just one ip, simply yield it:
if isinstance(ip_obj, ipaddress.IPv4Address):
yield ip_obj
# The object is a network, yield every host in it:
else:
for host in ip_obj:
yield host
def get_all_addresses(self, ips):
ip_objects = set()
inputs = [ip.strip() for ip in ips.split(',')]
for input_ in inputs:
try:
# Input is in range form ("1.2.3.4 - 5.6.7.8"):
if '-' in input_:
input_ips = input_.split('-')
ranges = set(
ipaddress.summarize_address_range(
*map(lambda x: ipaddress.IPv4Address(x.strip()), input_ips)
)
)
ip_objects.update(ranges)
# Input is in CIDR form ("192.168.0.0/24"):
elif '/' in input_:
network = ipaddress.ip_network(input_)
ip_objects.add(network)
# Input is a single ip ("1.1.1.1"):
else:
ip = ipaddress.ip_address(input_)
ip_objects.add(ip)
except ValueError as e:
print(e)
# If we get any non-ip value just ignore it
pass
ip_objects = list(ip_objects)
return ip_objects