summaryrefslogtreecommitdiff
path: root/src/conf_mode/service_ids_fastnetmon.py
blob: 57e12ddf2e9269d144883148f27179f0a7e2c627 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
#!/usr/bin/env python3
#
# Copyright (C) 2018-2022 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os

from sys import exit

from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.template import render
from vyos.util import call
from vyos.xml import defaults
from vyos import ConfigError
from vyos import airbag
airbag.enable()

config_file = r'/etc/fastnetmon.conf'
networks_list = r'/etc/networks_list'

def get_config(config=None):
    if config:
        conf = config
    else:
        conf = Config()
    base = ['service', 'ids', 'ddos-protection']
    fastnetmon = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)

    # We have gathered the dict representation of the CLI, but there are default
    # options which we need to update into the dictionary retrived.
    default_values = defaults(base)
    fastnetmon = dict_merge(default_values, fastnetmon)

    return fastnetmon

def verify(fastnetmon):
    if not fastnetmon:
        return None

    if not "mode" in fastnetmon:
        raise ConfigError('ddos-protection mode is mandatory!')

    if not "network" in fastnetmon:
        raise ConfigError('Required define network!')

    if not "listen_interface" in fastnetmon:
        raise ConfigError('Define listen-interface is mandatory!')

    if "alert_script" in fastnetmon:
        if os.path.isfile(fastnetmon["alert_script"]):
            # Check script permissions
            if not os.access(fastnetmon["alert_script"], os.X_OK):
                raise ConfigError('Script {0} does not have permissions for execution'.format(fastnetmon["alert_script"]))
        else:
           raise ConfigError('File {0} does not exists!'.format(fastnetmon["alert_script"]))

def generate(fastnetmon):
    if not fastnetmon:
        if os.path.isfile(config_file):
            os.unlink(config_file)
        if os.path.isfile(networks_list):
            os.unlink(networks_list)

        return

    render(config_file, 'ids/fastnetmon.j2', fastnetmon)
    render(networks_list, 'ids/fastnetmon_networks_list.j2', fastnetmon)

    return None

def apply(fastnetmon):
    if not fastnetmon:
        # Stop fastnetmon service if removed
        call('systemctl stop fastnetmon.service')
    else:
        call('systemctl restart fastnetmon.service')

    return None

if __name__ == '__main__':
    try:
        c = get_config()
        verify(c)
        generate(c)
        apply(c)
    except ConfigError as e:
        print(e)
        exit(1)