SSL certificate status with pyOpenSSL

ssl_status_pyopenssl.py

from OpenSSL import SSL
import sys, os, select, socket


def parse_name(name):
    return {
        'common_name': name.commonName
    }

def verify_cb(conn, cert, errnum, depth, ok):
    cert_data = {
        'subject': parse_name(cert.get_subject()),
        'issuer': parse_name(cert.get_issuer()),
        'from': cert.get_notAfter(),
        'until': cert.get_notBefore(),
        'expired': cert.has_expired(),
        'name_hash': cert.subject_name_hash()
    }
    print('===== cert data ======')
    for key, val in cert_data.items():
        print('{0}: {1}'.format(key, val))
    return ok


ctx = SSL.Context(SSL.SSLv23_METHOD)
ctx.set_verify(SSL.VERIFY_NONE, verify_cb) # Demand a certificate

sock = SSL.Connection(ctx, socket.socket(socket.AF_INET, socket.SOCK_STREAM))
sock.connect(('yourhost.com', 443))
sock.send('ping')
sock.close()