checkout listen port

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

# @Date    : 2023-06-16
# @Author  : jwgod
# @Version : 1.0.0
# 检测本机指定端口是否还在监听
# 运行：check_listen_port.py -p 8080

import socket
import argparse
import mail163
import local_ip as lip


def check_listen_port(port):
    ip = lip.get_IP()
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    r = s.connect_ex(('127.0.0.1', port))
    if r != 0:
        # print('%s port %s is down' % (ip, str(port)))
        mail163.mail('jwgod@163.com', 'mail_aler', '%s port %s is down' % (ip, str(port)))
    s.close()


def add_args():
    p = argparse.ArgumentParser()
    p.add_argument('-p', '--port', nargs='+', type=int, help='本机监听的端口号')
    return p.parse_args()


def main():
    args = add_args()
    for p in args.port:
        check_listen_port(p)


if __name__ == '__main__':
    main()

local ip

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

# @Date    : 2023-06-16
# @Author  : jwgod
# @Version : 1.0.0

import socket

r_ip = '192.168.64.129'  # 没有公网IP，先用内网网关对付


def get_IP():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect((r_ip, 0))
    ip = s.getsockname()[0]
    s.close()
    return ip

if __name__=='__main__':
    ip=get_IP()
    print(ip)

mail163

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# python mail.py jwgod@163.com mail_aler xxxx-is-down

import smtplib
import sys
from email.mime.text import MIMEText
from email.header import Header

smtp_server = 'smtphz.qiye.163.com'
mail_user = 'jwgod@163.com'
password = 'xxxxxxxxx'


def mail(to, subject, txt):
    msg = MIMEText(txt, 'html', _charset='utf-8')
    msg['From'] = mail_user
    msg['To'] = to
    msg['Subject'] = Header(subject, 'utf-8').encode()
    try:
        s = smtplib.SMTP_SSL(smtp_server, port=465)
        s.login(mail_user, password)
        s.sendmail(mail_user, to, msg.as_string())
        s.quit()
    except smtplib.SMTPException as e:
        print("Error: %s" % e)


def main():
    if len(sys.argv) != 4:
        print('$1 to_user $2 Subject $3 Content')
        print(len(sys.argv))
        sys.exit(1)
    else:
        mail(sys.argv[1], sys.argv[2], sys.argv[3])


if __name__ == '__main__':
    main()