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Generate remotely SSHFP records
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#!/bin/bash | |
set -e | |
if [[ "$#" -lt 1 ]]; then | |
echo "Usage: $0 <hostname or IP address>" | |
exit | |
fi | |
host="$1" | |
TMPFILE="$(mktemp /var/tmp/sshfp.XXXXXX)" | |
trap 'rm -f ${TMPFILE}' INT TERM EXIT | |
for proto in rsa dsa ecdsa ed25519; do | |
ssh-keyscan -t $proto "$host" > ${TMPFILE} 2>/dev/null | |
[[ ! -s "${TMPFILE}" ]] && continue | |
sed -ri 's/^[^ ]+ //' ${TMPFILE} | |
ssh-keygen -r "$host" -f ${TMPFILE} | |
done |
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I found a bug, because of
-e
the command will exit if it does not find the key: for exampledsa
and stop the processMy fix
You can see this if you add an echo at the first line of the loop, it shows that it dies