版本一：

执行脚本带上 --dingtalk-webhook和–domains后指定钉钉token和域名

python3 ssl_spirtime.py --dingtalk-webhook https://oapi.dingtalk.com/robot/send?access_token=avd345324 --domains www.abc1.com www.abc2.com www.abc3.com

脚本如下

#!/usr/bin/python3
import ssl
import socket
from datetime import datetime
import argparse
import requestsdef get_ssl_cert_expiration(domain, port=443):context = ssl.create_default_context()conn = context.wrap_socket(socket.socket(socket.AF_INET), server_hostname=domain)conn.connect((domain, port))cert = conn.getpeercert()conn.close()# Extract the expiration date from the certificatenot_after = cert['notAfter']# Convert the date string to a datetime objectexpiration_date = datetime.strptime(not_after, '%b %d %H:%M:%S %Y %Z')return expiration_datedef send_dingtalk_message(webhook_url, message):headers = {'Content-Type': 'application/json'}payload = {"msgtype": "text","text": {"content": message}}response = requests.post(webhook_url, json=payload, headers=headers)if response.status_code == 200:print("Message sent successfully to DingTalk")else:print(f"Failed to send message to DingTalk. HTTP Status Code: {response.status_code}")if __name__ == "__main__":parser = argparse.ArgumentParser(description="Test SSL certificate expiration for multiple domains")parser.add_argument("--dingtalk-webhook", required=True, help="DingTalk webhook URL")parser.add_argument("--domains", nargs='+', required=True, help="List of domains to test SSL certificate expiration")args = parser.parse_args()for domain in args.domains:expiration_date = get_ssl_cert_expiration(domain)current_date = datetime.now()days_remaining = (expiration_date - current_date).daysprint(f"SSL certificate for {domain} expires on {expiration_date}")print(f"Days remaining: {days_remaining} days")if days_remaining < 300:message = f"SSL certificate for {domain} will expire on {expiration_date}. Only {days_remaining} days remaining."send_dingtalk_message(args.dingtalk_webhook, message)

版本二

执行脚本带上 --dingtalk-webhook、–secret和–domains后指定钉钉token、密钥和域名

python3 ssl_spirtime4.py --dingtalk-webhook https://oapi.dingtalk.com/robot/send?access_token=abdcsardaef--secret SEC75bcc2abdfd --domains www.abc1.com www.abc2.com www.abc3.com

#!/usr/bin/python3
import ssl
import socket
from datetime import datetime
import argparse
import requests
import hashlib
import hmac
import base64
import timedef get_ssl_cert_expiration(domain, port=443):context = ssl.create_default_context()conn = context.wrap_socket(socket.socket(socket.AF_INET), server_hostname=domain)conn.connect((domain, port))cert = conn.getpeercert()conn.close()# Extract the expiration date from the certificatenot_after = cert['notAfter']# Convert the date string to a datetime objectexpiration_date = datetime.strptime(not_after, '%b %d %H:%M:%S %Y %Z')return expiration_datedef send_dingtalk_message(webhook_url, secret, message):headers = {'Content-Type': 'application/json'}# Get the current timestamp in millisecondstimestamp = str(int(round(time.time() * 1000)))# Combine timestamp and secret to create a sign stringsign_string = f"{timestamp}\n{secret}"# Calculate the HMAC-SHA256 signaturesign = base64.b64encode(hmac.new(secret.encode(), sign_string.encode(), hashlib.sha256).digest()).decode()# Create the payload with the calculated signaturepayload = {"msgtype": "text","text": {"content": message},"timestamp": timestamp,"sign": sign}response = requests.post(f"{webhook_url}&timestamp={timestamp}&sign={sign}", json=payload, headers=headers)if response.status_code == 200:print("Message sent successfully to DingTalk")else:print(f"Failed to send message to DingTalk. HTTP Status Code: {response.status_code}")if __name__ == "__main__":parser = argparse.ArgumentParser(description="Test SSL certificate expiration for multiple domains")parser.add_argument("--dingtalk-webhook", required=True, help="DingTalk webhook URL")parser.add_argument("--secret", required=True, help="DingTalk robot secret")parser.add_argument("--domains", nargs='+', required=True, help="List of domains to test SSL certificate expiration")args = parser.parse_args()for domain in args.domains:expiration_date = get_ssl_cert_expiration(domain)current_date = datetime.now()days_remaining = (expiration_date - current_date).daysprint(f"SSL certificate for {domain} expires on {expiration_date}")print(f"Days remaining: {days_remaining} days")if days_remaining < 10:message = f"SSL certificate for {domain} will expire on {expiration_date}. Only {days_remaining} days remaining."send_dingtalk_message(args.dingtalk_webhook, args.secret, message)

终极版本

python执行脚本时指定配置文件

python3 ssl_spirtime.py --config-file config.json

config.json配置文件内容如下

{"dingtalk-webhook": "https://oapi.dingtalk.com/robot/send?access_token=avbdcse345dd","secret": "SECaegdDEdaDSEGFdadd12334","domains": ["www.a.tel","www.b.com","www.c.app","www.d-cn.com","www.e.com","www.f.com","www.g.com","www.gg.com","www.sd.com","www.234.com","www.456.com","www.addf.com","www.advdwd.com","aqjs.aefdsdf.com","apap.adedgdg.com","cbap.asfew.com","ksjsw.adfewfd.cn","wdxl.aeffadaf.com","wspr.afefd.shop","sktprd.daeafsdf.shop","webskt.afaefafa.shop","www.afaead.cn","www.afewfsegs.co","www.aaeafsf.com","bdvt.aeraf.info","dl.afawef.co","dl.aefarge.com"]
}

脚本内容如下

#!/usr/bin/python3
import ssl
import socket
from datetime import datetime
import argparse
import requests
import hashlib
import hmac
import base64
import time
import jsondef get_ssl_cert_expiration(domain, port=443):context = ssl.create_default_context()conn = context.wrap_socket(socket.socket(socket.AF_INET), server_hostname=domain)conn.connect((domain, port))cert = conn.getpeercert()conn.close()# Extract the expiration date from the certificatenot_after = cert['notAfter']# Convert the date string to a datetime objectexpiration_date = datetime.strptime(not_after, '%b %d %H:%M:%S %Y %Z')return expiration_datedef send_dingtalk_message(webhook_url, secret, message):headers = {'Content-Type': 'application/json'}# Get the current timestamp in millisecondstimestamp = str(int(round(time.time() * 1000)))# Combine timestamp and secret to create a sign stringsign_string = f"{timestamp}\n{secret}"# Calculate the HMAC-SHA256 signaturesign = base64.b64encode(hmac.new(secret.encode(), sign_string.encode(), hashlib.sha256).digest()).decode()# Create the payload with the calculated signaturepayload = {"msgtype": "text","text": {"content": message},"timestamp": timestamp,"sign": sign}response = requests.post(f"{webhook_url}&timestamp={timestamp}&sign={sign}", json=payload, headers=headers)if response.status_code == 200:print("Message sent successfully to DingTalk")else:print(f"Failed to send message to DingTalk. HTTP Status Code: {response.status_code}")if __name__ == "__main__":# 从配置文件中加载配置with open("config.json", 'r') as config_file:config = json.load(config_file)dingtalk_webhook = config.get("dingtalk-webhook")secret = config.get("secret")domains = config.get("domains")for domain in domains:expiration_date = get_ssl_cert_expiration(domain)current_date = datetime.now()days_remaining = (expiration_date - current_date).daysprint(f"SSL certificate for {domain} expires on {expiration_date}")print(f"Days remaining: {days_remaining} days")if days_remaining < 10:message = f"SSL certificate for {domain} will expire on {expiration_date}. Only {days_remaining} days remaining."send_dingtalk_message(dingtalk_webhook, secret, message)

执行结果

/usr/bin/python3 /root/ssl_spirtime.py --config-file /root/config.json
SSL certificate for www.a.tel expires on 2024-06-08 23:59:59
Days remaining: 220 days
SSL certificate for www.b.com expires on 2024-05-23 07:45:13
Days remaining: 203 days
SSL certificate for www.c.app expires on 2024-05-23 07:45:13
Days remaining: 203 days
SSL certificate for www.d-cn.com expires on 2024-03-03 00:00:00
Days remaining: 122 days
SSL certificate for www.aed.com expires on 2024-11-17 06:30:15
Days remaining: 381 days
SSL certificate for www.afedf.com expires on 2024-06-20 23:59:59
Days remaining: 232 days
SSL certificate for www.aefdfd.com expires on 2024-06-20 23:59:59

钉钉告警消息如下