liveness-probe.py

# -*- coding:utf-8 -*-
"""
BSD 3-Clause License
Copyright (c) 2021, Andrew Junzki
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""

import socket
import paramiko
from typing import Optional

DEFAULT_TIMEOUT = 1
PORTS_RANGE = (1, 65535)
PORTS = (
    7,   # Echo
    20,  # FTP
    21,  # Telnet
    22,  # SSH
    23,  # Samba
    80,  # HTTP
    139,  # Samba
    443,  # HTTPS
    445,  # Samba
    1080,  # SOCKSv5
    1433,  # MSSQL
    3306,  # MySQL
    3389,  # RDP
    5432,  # PostgreSQL
    6379   # Redis
)


def ssh_probe(host: str, port: int = 22,
              username: Optional[str] = None, password: Optional[str] = None,
              keyfile: Optional[str] = None):
    client = paramiko.SSHClient()
    try:
        client.connect(hostname=host, port=port, timeout=DEFAULT_TIMEOUT)
    except socket.error:
        return False
    except Exception:
        return True

    return True


def _connect(host: str, port: int):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    sock.settimeout(0.01)  # 10ms
    try:
        sock.connect((host, port))
    except:
        return False
    else:
        sock.close()

    return True


def ports_probe(host: str, continue_on_success: bool = False, **kwargs):

    for port in PORTS:
        if _connect(host, port):
            print("Found opened port: %d" % port)
            if not continue_on_success:
                return True

    return False