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redneck-f25/show_certificate_chain.bash

Created February 2, 2024 05:34
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show_certificate_chain.bash
#!/bin/bash
openssl s_client -showcerts -connect example.org:443 < /dev/null \
| sed -n '/^-----BEGIN CERTIFICATE-----/,/^-----END CERTIFICATE-----/p' \
| {
cert=
while read -r; do
cert+="${REPLY}"$'\n'
if [[ "${REPLY}" == "-----END CERTIFICATE-----" ]]; then
openssl x509 -in - -out - -text <<<"${cert}"
cert=
fi
done
}
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