/
dynfwserv.py
executable file
·146 lines (126 loc) · 3.85 KB
/
dynfwserv.py
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#!/usr/bin/python -tt
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from netfilter.rule import Rule,Match
from netfilter.table import Table,IptablesError
import firewalliot,time
app = Flask(__name__)
app.config.from_object(__name__)
app.config['SECRET_KEY'] = 'DOYOUEVENDYNFWBRO'
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///./database/gwiotweb.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)
class AuthConns(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(64), nullable=False)
ip_addr = db.Column(db.String(64), nullable=False)
ip_port = db.Column(db.Integer, nullable=True)
sessiontime = db.Column(db.String(64), nullable=False)
fw_status = db.Column(db.Boolean())
port_status = db.Column(db.Boolean())
def __repr__(self):
return '<User %r IP %r Port %r Time %r>' % (self.username, self.ip_addr, self.ip_port, self.sessiontime)
def print_table():
print AuthConns.query.all()
def rule_manager():
filtable=Table('filter')
firewalliot.block_rules()
db.create_all()
db.session.query(AuthConns).delete()
db.session.commit()
open('/var/log/firewall','w').close()
while True:
for row in db.session.query(AuthConns):
if int(row.sessiontime) <= int(time.time()):
try:
rule0=Rule(
jump='ACCEPT',
protocol='udp',
matches=[Match('udp','--dst '+str(row.ip_addr))])
filtable.delete_rule('FORWARD',rule0)
except IptablesError as e:
pass
db.session.delete(AuthConns.query.filter(AuthConns.id == row.id).first())
elif not row.fw_status:
rule0=Rule(
jump='ACCEPT',
protocol='udp',
matches=[Match('udp','--dst '+str(row.ip_addr))])
filtable.prepend_rule('FORWARD',rule0)
cwfwrule = AuthConns.query.filter_by(id=row.id).first()
cwferule.fw_status = True
elif not row.ip_port:
log_lookup()
manage_logging()
else:
pass
db.session.commit()
time.sleep(15)
def log_lookup():
with open('/var/log/firewall','r') as f:
lines = f.readlines()
for line in lines:
cwport=int(line.split("DPT=")[1].split()[0])
cwip=line.split("DST=")[1].split()[0]
authconndb = AuthConns.query.filter_by(ip_addr=cwip).filter_by(ip_port=None).first()
authconndb.ip_port = cwport
open('/var/log/firewall','w').close()
return
def manage_logging():
filtable=Table('filter')
for row in db.session.query(AuthConns):
if row.ip_port and not row.port_status:
rule0=Rule(
jump='ACCEPT',
protocol='udp',
matches=[Match('udp','--dst '+str(row.ip_addr)+' --dport '+str(row.ip_port))])
filtable.prepend_rule('FORWARD',rule0)
try:
rule1=Rule(
jump='LOG',
protocol='udp',
matches=[Match('udp','--dst '+str(row.ip_addr)),Match('limit','--limit 1/hour --limit-burst 1')])
filtable.delete_rule('FORWARD',rule1)
except IptablesError as e:
pass
try:
rule2=Rule(
jump='ACCEPT',
protocol='udp',
matches=[Match('udp','--dst '+str(row.ip_addr))])
filtable.delete_rule('FORWARD',rule2)
except IptablesError as e:
pass
row.port_status = True
else:
pass
def force_add(ip_addr):
filtable=Table('filter')
rule0=Rule(
jump='ACCEPT',
protocol='udp',
matches=[Match('udp','--dst '+ip_addr)])
filtable.prepend_rule('FORWARD',rule0)
rule1=Rule(
jump='LOG',
protocol='udp',
matches=[Match('udp','--dst '+ip_addr),Match('limit','--limit 1/hour --limit-burst 1')])
filtable.prepend_rule('FORWARD',rule1)
def force_remove(ip_addr):
filtable=Table('filter')
try:
rule0=Rule(
jump='ACCEPT',
protocol='udp',
matches=[Match('udp','--dst '+str(ip_addr))])
filtable.delete_rule('FORWARD',rule0)
except IptablesError as e:
pass
try:
rule1=Rule(
jump='LOG',
protocol='udp',
matches=[Match('udp','--dst '+ip_addr),Match('limit','--limit 1/hour --limit-burst 1')])
filtable.delete_rule('FORWARD',rule1)
except IptablesError as e:
pass