Implement verbose certificate output
Bump version to 0.2.0
Update readme usage
The certtool package provides the cert command for quickly checking TLS certificates on one or more hosts.
Quickly check the https certificate of one or more domains
$ cert example.com
example.com Ok, 127 days remaining
$ 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: Certificate checker [-h] [--https | --no-https] [--imaps | --no-imaps]
[--pop3s | --no-pop3s] [--smtps | --no-smtps]
[--submission | --no-submission] [--port PORT]
[--timeout TIMEOUT]
domain [domain ...]
positional arguments:
domain
options:
-h, --help show this help message and exit
--https, --no-https Check http (443) (default: True)
--imaps, --no-imaps Check imap (993) (default: False)
--pop3s, --no-pop3s Check pop3s (995) (default: False)
--smtps, --no-smtps Check smtp (465) (default: False)
--submission, --no-submission
Check smtp with starttls (587) (default: False)
--port PORT Check a specific port
--timeout TIMEOUT, -t TIMEOUT
Set the timeout in seconds for the TCP connection
The tool can be installed with a regular python3 setup.py install or installed from pypi with
# pip3 install certtool
The package depends on pyopenssl and colorama