开源python脚本系列-批量查询ssl过期时间

import socket
import ssl
import datetime
# author 波哥（IT运维技术圈）
# 域名列表
DOMAIN_LIST = [
    "www.98dev.com",
    "www.baidu.com",
    "www.yahoo.com",
    "www.microsoft.com"
]
# 解析IP地址
def resolve_domain(domain):
    try:
        ips = socket.getaddrinfo(domain, None)
        return [ip[4][0] for ip in ips]
    except:
        return []
# 获取证书信息
def get_certificate_info(domain):
    context = ssl.create_default_context()
    with socket.create_connection((domain, 443)) as sock:
        with context.wrap_socket(sock, server_hostname=domain) as sslsock:
            cert = sslsock.getpeercert()
            subject = dict(x[0] for x in cert['subject'])
            issued_to = subject.get('commonName')
            issuer = dict(x[0] for x in cert['issuer'])
            issued_by = issuer.get('organizationName')
            valid_from = datetime.datetime.strptime(cert['notBefore'], '%b %d %H:%M:%S %Y %Z')
            valid_to = datetime.datetime.strptime(cert['notAfter'], '%b %d %H:%M:%S %Y %Z')
            expire_days = (valid_to - datetime.datetime.utcnow()).days
            return (issued_to, valid_from, valid_to, expire_days, issued_by)
# 打印结果
def print_result(domain, info):
    print("="*50)
    print("Domain: {0}".format(domain))
    print("通用名: {0}".format(info[0]))
    print("生效日期: {0}".format(info[1]))
    print("到期日期: {0}".format(info[2]))
    print("距离过期还剩: {0} 天".format(info[3]))
    print("颁发机构: {0}".format(info[4]))
    ips = resolve_domain(domain)
    if ips:
        print("解析地址: {0}".format(", ".join(ips)))
    else:
        print("解析地址: N/A")
    print("="*50)
# 主程序
if __name__ == "__main__":
    for domain in DOMAIN_LIST:
        try:
            info = get_certificate_info(domain)
            print_result(domain, info)
        except:
            print("无法获取域名 {0} 的证书信息".format(domain))