mirror of
https://github.com/quantum5/bird-filter.git
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33 lines
758 B
Plaintext
33 lines
758 B
Plaintext
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#!/bin/bash
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set -euo pipefail
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# Change this to a PeeringDB mirror
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PEERINGDB=https://www.peeringdb.com
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PEER_SOURCE=/etc/bird/prefix-limits
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LIMIT_OUTPUT=/etc/bird/prefix_limits.conf
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[ -f "$PEER_SOURCE" ] || exit
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tmpdir="$(mktemp -d /tmp/bird-prefix-limit.XXXXXX)"
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cleanup() {
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rm -rf "$tmpdir"
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}
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trap cleanup EXIT
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join_by() {
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local d=${1-} f=${2-}
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if shift 2; then
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printf %s "$f" "${@/#/$d}"
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fi
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}
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readarray -t asns < <(grep -vE '^#|^$' "$PEER_SOURCE")
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curl -s "$PEERINGDB/api/net?asn__in=$(join_by , "${asns[@]}")" | \
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jq -r '(.data // [])[] | "define LIMIT_AS\(.asn)_V4 = \(.info_prefixes4);\ndefine LIMIT_AS\(.asn)_V6 = \(.info_prefixes6);"' \
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> "$tmpdir/limits.conf"
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mv "$tmpdir/limits.conf" "$LIMIT_OUTPUT"
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chmod a+r "$LIMIT_OUTPUT"
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