You can simply extract information about the SSL certificate of HTTP connections using OpenSSL
For example:
From there, it is only redirecting the output to a file or extracting information out of the stream with Perl.
openssl s_client -connect ${URL}:${PORT}
For example:
openssl s_client -connect checkout.google.com:443
From there, it is only redirecting the output to a file or extracting information out of the stream with Perl.
