# 获取证书到期时间

* get\_ssl.py

```python
#!/usr/bin/env python3
# coding: utf8

from urllib3.contrib import pyopenssl
from datetime import datetime
from sys import argv


class SSL_Check:

    def __init__(self, url):
        self.url = url

    @property
    def get_str_time(self):
        x509 = pyopenssl.OpenSSL.crypto.load_certificate(pyopenssl.OpenSSL.crypto.FILETYPE_PEM,
                                                         pyopenssl.ssl.get_server_certificate((self.url, 443)))
        return x509.get_notAfter().decode()[0:-1]

    @property
    def get_ssl_time(self):
        ssl_time = datetime.strptime(self.get_str_time, '%Y%m%d%H%M%S')
        return (ssl_time - datetime.now()).days


if __name__ == '__main__':
    try:
        url = argv[1]
        ssl_chenk = SSL_Check(url)
        print(ssl_chenk.get_ssl_time)
    except Exception as e:
        print('')
```



```bash
python3 get_ssl.py domain.com
```
