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amirkdv/inspect-tls-cert.sh

Created March 11, 2024 03:18
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inspect-tls-cert.sh
#!/bin/bash
#
# Usage:
# $ inspect-tls-cert.sh facebook.com
set -eux
server=${1:-"stripe.com"}
certfile=/tmp/${server}.cert
openssl_client_connect="openssl s_client -connect ${server}:443 -servername ${server}"
echo "Downloading TLS cert for ${server} to ${certfile}"
echo | ${openssl_client_connect} | openssl x509 > ${certfile}
echo "Inspecting TLS cert at ${certfile}"
openssl x509 -in ${certfile} -text -noout
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