23 lines
881 B
Bash
Executable File
23 lines
881 B
Bash
Executable File
#!/bin/sh
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ip_address="$1"
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if echo "$ip_address" | grep -vqE '^([0-9]{1,3}\.){3}[0-9]{1,3}$'; then
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echo "ip_address $ip_address must match "'"^([0-9]{1,3}\.){3}[0-9]{1,3}$"'
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exit 1
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fi
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printf '['
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DELIMITER="\n"
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ssh-keyscan "$ip_address" 2>/dev/null | while read -r line; do
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if echo "$line" | grep -qE "^$ip_address"' +(ssh|ecdsa)-[0-9A-Za-z+/_=@. -]+$'; then
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KEY_CONTENT="$(echo "$line" | awk '{ print $2 " " $3 }')"
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FINGERPRINT_OUTPUT="$(echo "$KEY_CONTENT" | ssh-keygen -l -E sha256 -f - | sed -E 's/^[0-9]+ SHA256:([0-9A-Za-z+/-]+) .+ \(([A-Z0-9]+)\)$/\1 \2/g')"
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SHA256_HASH="$(echo "$FINGERPRINT_OUTPUT" | awk '{ print $1 }')"
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KEY_TYPE="$(echo "$FINGERPRINT_OUTPUT" | awk '{ print $2 }')"
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printf '%s{"key_type":"%s", "content":"%s", "sha256":"%s"}' "$DELIMITER" "$KEY_TYPE" "$KEY_CONTENT" "$SHA256_HASH"
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DELIMITER=",\n"
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fi
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done
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printf '\n]\n'
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