certtool 0.1.1

Easily check certificate status of domains

Certificate tool

The certtool package provides the cert command for quickly checking TLS certificates on one or more hosts.

Examples

Quickly check the https certificate of one or more domains

$ cert example.com
example.com   Ok, 127 days remainingcer

$ cert example.com example.org example.nl
example.com   Ok, 127 days remaining 
example.org   Ok, 127 days remaining 
example.nl    Ok, 169 days remaining

Also check imap and smtp certificates

cert --imaps --smtps example.com
example.com  https  Certificate is expired (valid until 2021-09-30 22:54:11) 
             imaps  Certificate almost expired (19 days, 1:45:51.654055) 
             smtps  Certificate almost expired (19 days, 1:45:51.604624)

It's also possible to not check https by specifying --no-https

$ cert --imaps --smtps --no-https example.com example.nl
example.com  imaps  Certificate almost expired (19 days, 1:44:26.323233) 
             smtps  Certificate almost expired (19 days, 1:44:26.287489) 
example.nl   imaps  Wrong CN, certificate is for example.org
             smtps  Wrong CN, certificate is for example.org

Usage

usage: Certificate checker [-h] [--https | --no-https] [--imaps | --no-imaps] [--pop3s | --no-pop3s] [--smtps | --no-smtps] [--port PORT] domain [domain ...]

positional arguments:
  domain

options:
  -h, --help           show this help message and exit
  --https, --no-https  Check http (default: True)
  --imaps, --no-imaps  Check imap (default: False)
  --pop3s, --no-pop3s  Check pop3s (default: False)
  --smtps, --no-smtps  Check smtp (default: False)
  --port PORT          Check a specific port