blob: d7f67bbc7c7889f4c6689d705903b8f4e422fedd (
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#!/bin/bash
TEMP=$(mktemp)
OUTPUT="$1"
die() {
echo "error: $@"
[ -f "$TEMP" ] && rm "$TEMP"
exit 1
}
[ -z "$OUTPUT" ] && {
echo "usage: $0 OUTPUT"
exit
}
curl -s "https://www.cloudflare.com/ips-v4" --output "$TEMP" || die "downloading failed"
[ -s "$TEMP" ] || die "temp file is empty"
cat "$TEMP" | sed 's/^/allow /g' | sed 's/$/;/g' | tee "$TEMP" > /dev/null
echo -e "satisfy all;\n$(cat "$TEMP")" > "$TEMP"
echo "deny all;" >> "$TEMP"
[ -f "$OUTPUT" ] && {
rm "$OUTPUT" || die "failed to remove old file $OUTPUT"
}
mv "$TEMP" "$OUTPUT"
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