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Sentry bot to warn SSL certificates expirations.
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| #!/usr/bin/python | |
| # -*- coding:utf-8 -*- | |
| # Park Hyunwoo <[email protected]> | |
| # | |
| # You can download ssl-cert-check from http://prefetch.net/articles/checkcertificate.html | |
| # | |
| import smtplib | |
| import email | |
| import os | |
| import re | |
| import subprocess | |
| conf = { | |
| 'host' : 'YOUR_SMTP_SERVER_HOSTNAME', | |
| 'port' : 587, | |
| 'user' : 'USERNAME_FOR_AUTH', | |
| 'password' : 'PASSWORD_FOR_AUTH', | |
| 'cert_checker' : 'ssl-cert-check', | |
| 'cert_dir' : 'DIRECTORY_CONTAINS_CERTS', | |
| 'cert_filter' : '*production*.pem', | |
| 'warn_to_day' : 7, | |
| 'from' : 'Certificate Sentry <[email protected]>', | |
| 'to' : 'MAIL_OF_YOU', | |
| } | |
| def check_certificates( cert_dir, cert_filter, cert_checker, warn_to_day ): | |
| res = {'warning':[], 'expired':[]} | |
| try: | |
| output = subprocess.check_output( | |
| 'find %s -name %s -exec %s -x %d -c {} \; | grep FILE:' % (cert_dir, cert_filter, cert_checker, warn_to_day), | |
| shell=True) | |
| prog = re.compile(r'FILE:([^ ]+) (Valid|Expired)[ ]+([A-Za-z]{3} [0-9]{,2} [0-9]{4})[ ]+([0-9\-]+)') | |
| for s in output.split('\n'): | |
| r = prog.match(s) | |
| if not r: continue | |
| if r.group(2) == 'Expiring': | |
| res['warning'].append({'file': r.group(1), 'day': r.group(4)}) | |
| elif r.group(2) == 'Expired': | |
| res['expired'].append({'file': r.group(1), 'day': r.group(4)}) | |
| except subprocess.CalledProcessError: | |
| return None | |
| return res | |
| def send_mail(host, port, user, password, from_user, to_user, subject, text): | |
| msg = email.MIMEMultipart.MIMEMultipart('alternative') | |
| msg['From'] = from_user | |
| msg['To'] = to_user | |
| msg['Subject'] = email.Header.Header(s=subject, charset='utf-8') | |
| msg['Date'] = email.Utils.formatdate(localtime = 1) | |
| msg.attach(email.MIMEText.MIMEText(text, 'html', _charset='utf-8')) | |
| smtp = smtplib.SMTP(host, port) | |
| smtp.ehlo() | |
| smtp.starttls() | |
| smtp.ehlo() | |
| smtp.login(user, password) | |
| smtp.sendmail(from_user, to_user, msg.as_string()) | |
| smtp.close() | |
| if __name__ == '__main__': | |
| result = check_certificates( conf['cert_dir'], conf['cert_filter'], conf['cert_checker'], conf['warn_to_day'] ) | |
| if result: | |
| title = None | |
| body = '' | |
| if result['warning']: | |
| title = 'Some certificates are going to be expired.' | |
| tab = '<h2>WARNING</h2><table><tr><th>Remain</th><th>File</th></tr>' | |
| for w in result['warning']: | |
| tab = tab + '<tr><td>%s</td><td>%s</td></tr>' % (w['day'], w['file']) | |
| tab = tab + '</table>' | |
| body = body + tab | |
| if result['expired']: | |
| title = '[ERROR] Expired certifications were detected.' | |
| tab = '<h2><font color="red">EXPIRED</font></h2><table><tr><th>Over</th><th>File</th></tr>' | |
| for e in result['expired']: | |
| tab = tab + '<tr><td>%s</td><td>%s</td></tr>' % (e['day'], e['file']) | |
| tab = tab + '</table>' | |
| body = tab + body | |
| body = '<html><body>'+body+'</body></html>' | |
| if title: | |
| send_mail( conf['host'], conf['port'], conf['user'], conf['password'], conf['from'], conf['to'], title, body ) |
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