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Refactoring code pt.1

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This commit is contained in:
nik012003
2022-08-11 16:11:32 +02:00
committed by DomySh
parent 1931536516
commit f4fe3d3ab5
9 changed files with 354 additions and 73 deletions
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38
backend/modules/nfregex/nftables.py
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@@ -1,10 +1,10 @@
from typing import List
from modules.nfregex.models import Service
from utils import ip_parse, ip_family, NFTableManager
class FiregexFilter():
def __init__(self, proto:str, port:int, ip_int:str, queue=None, target:str=None, id=None):
def __init__(self, proto:str, port:int, ip_int:str, target:str=None, id=None):
self.id = int(id) if id else None
self.queue = queue
self.target = target
self.proto = proto
self.port = int(port)
@@ -46,47 +46,41 @@ class FiregexTables(NFTableManager):
{"delete":{"chain":{"table":self.table_name,"family":"inet", "name":self.output_chain}}},
])
def add_output(self, queue_range, proto, port, ip_int):
init, end = queue_range
if init > end: init, end = end, init
ip_int = ip_parse(ip_int)
def add(self, srv:Service, queue_range_input, queue_range_output):
ip_int = ip_parse(srv.ip_int)
ip_addr = str(ip_int).split("/")[0]
ip_addr_cidr = int(str(ip_int).split("/")[1])
init, end = queue_range_output
if init > end: init, end = end, init
self.cmd({ "insert":{ "rule": {
"family": "inet",
"table": self.table_name,
"chain": self.output_chain,
"expr": [
{'match': {'left': {'payload': {'protocol': ip_family(ip_int), 'field': 'saddr'}}, 'op': '==', 'right': {"prefix": {"addr": ip_addr, "len": ip_addr_cidr}}}},
{'match': {"left": { "payload": {"protocol": str(proto), "field": "sport"}}, "op": "==", "right": int(port)}},
{'match': {"left": { "payload": {"protocol": str(srv.proto), "field": "sport"}}, "op": "==", "right": int(srv.port)}},
{"queue": {"num": str(init) if init == end else {"range":[init, end] }, "flags": ["bypass"]}}
]
}}})
def add_input(self, queue_range, proto = None, port = None, ip_int = None):
init, end = queue_range
init, end = queue_range_input
if init > end: init, end = end, init
ip_int = ip_parse(ip_int)
ip_addr = str(ip_int).split("/")[0]
ip_addr_cidr = int(str(ip_int).split("/")[1])
self.cmd({"insert":{"rule":{
"family": "inet",
"table": self.table_name,
"chain": self.input_chain,
"expr": [
{'match': {'left': {'payload': {'protocol': ip_family(ip_int), 'field': 'daddr'}}, 'op': '==', 'right': {"prefix": {"addr": ip_addr, "len": ip_addr_cidr}}}},
{'match': {"left": { "payload": {"protocol": str(proto), "field": "dport"}}, "op": "==", "right": int(port)}},
{'match': {"left": { "payload": {"protocol": str(srv.proto), "field": "dport"}}, "op": "==", "right": int(srv.port)}},
{"queue": {"num": str(init) if init == end else {"range":[init, end] }, "flags": ["bypass"]}}
]
}}})
def get(self) -> List[FiregexFilter]:
res = []
for filter in [ele["rule"] for ele in self.list() if "rule" in ele and ele["rule"]["table"] == self.table_name]:
queue_str = filter["expr"][2]["queue"]["num"]
queue = None
if isinstance(queue_str,dict): queue = int(queue_str["range"][0]), int(queue_str["range"][1])
else: queue = int(queue_str), int(queue_str)
for filter in self.list_rules(tables=[self.table_name], chains=[self.input_chain,self.output_chain]):
ip_int = None
if isinstance(filter["expr"][0]["match"]["right"],str):
ip_int = str(ip_parse(filter["expr"][0]["match"]["right"]))
@@ -95,10 +89,14 @@ class FiregexTables(NFTableManager):
res.append(FiregexFilter(
target=filter["chain"],
id=int(filter["handle"]),
queue=queue,
proto=filter["expr"][1]["match"]["left"]["payload"]["protocol"],
port=filter["expr"][1]["match"]["right"],
ip_int=ip_int
))
return res
def delete(self, srv:Service):
for filter in self.get():
if filter.port == srv.port and filter.proto == srv.proto and ip_parse(filter.ip_int) == ip_parse(srv.ip_int):
self.cmd({"delete":{"rule": {"handle": filter.id, "table": self.table_name, "chain": filter.target, "family": "inet"}}})