#!/bin/sh
set -eu

: "${RPKI_FRR_RPKI_HOST:=127.0.0.1}"
: "${RPKI_FRR_RPKI_PORT:=323}"
: "${RPKI_FRR_RPKI_PREFERENCE:=1}"
: "${RPKI_FRR_CONFIG_TEMPLATE_PATH:=/config/frr.conf.template}"
: "${RPKI_FRR_CONFIG_PATH:=/etc/frr/frr.conf}"

escape_sed() {
  printf '%s' "$1" | sed 's/[&|\\]/\\&/g'
}

host="$(escape_sed "${RPKI_FRR_RPKI_HOST}")"
port="$(escape_sed "${RPKI_FRR_RPKI_PORT}")"
preference="$(escape_sed "${RPKI_FRR_RPKI_PREFERENCE}")"

sed \
  -e "s|\${RPKI_FRR_RPKI_HOST}|${host}|g" \
  -e "s|\${RPKI_FRR_RPKI_PORT}|${port}|g" \
  -e "s|\${RPKI_FRR_RPKI_PREFERENCE}|${preference}|g" \
  "${RPKI_FRR_CONFIG_TEMPLATE_PATH}" > "${RPKI_FRR_CONFIG_PATH}"

exec /usr/lib/frr/docker-start