First code sync
Signed-off-by: Alarig Le Lay <alelay@scaleway.com>
This commit is contained in:
Alarig Le Lay
parent
9e9ad27fff
commit
0070ef25c4
215
generate-irr-filter.sh
Executable file
215
generate-irr-filter.sh
Executable file
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#!/bin/sh
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set -e
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# for iconv below
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export LC_ALL=en_US.utf8
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# 1st argument must be an ASN registered to peeringdb
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# 2nd argument must be the IPv4 peering address
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# 3rd argument must be the IPv6 peering address
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if [ ! -f /usr/local/etc/bird-peers-update.conf ]; then
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printf "Write /usr/local/etc/bird-peers-update.conf with at least "
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printf "PDB_API_KEY, IXP_ASN and BIRD_CONF_PATH vars\n"
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exit 1
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else
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. /usr/local/etc/bird-peers-update.conf
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fi
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PEER_AS=$1
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IPv4=$2
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IPv6=$3
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if [ -z "${PEER_AS}" -o -z "${IPv4}" -o -z "${IPv6}" ]; then
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echo "1st argument must be an ASN registered to peeringdb"
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echo "2nd argument must be the IPv4 peering address"
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echo "3rd argument must be the IPv6 peering address"
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exit 1
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fi
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CACHE_DIR=/var/local/cache/peeringdb
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if [ ! -d "${CACHE_DIR}" ]; then
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mkdir -p "${CACHE_DIR}"
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fi
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# re-fetch data if it's too old
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if [ -z "$(find ${CACHE_DIR} -mmin -720 -name ${PEER_AS}.json)" ]; then
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curl -s -H 'Authorization: Api-Key '"${PDB_API_KEY}" \
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-X GET "https://www.peeringdb.com/api/net?asn=${PEER_AS}" \
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> "${CACHE_DIR}/${PEER_AS}.json"
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fi
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# test if the data is valid, -e will exit the script
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jq -r '.data[] | .irr_as_set' "${CACHE_DIR}/${PEER_AS}.json" 1>/dev/null
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IRRASSET=$(jq -r '.data[] | .irr_as_set' "${CACHE_DIR}/${PEER_AS}.json")
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MAXPREF4=$(jq -r '.data[] | .info_prefixes4' "${CACHE_DIR}/${PEER_AS}.json")
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MAXPREF6=$(jq -r '.data[] | .info_prefixes6' "${CACHE_DIR}/${PEER_AS}.json")
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AS_NAME=$(jq -r '.data[] | .name' "${CACHE_DIR}/${PEER_AS}.json")
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if [ -z "${IRRASSET}" ]; then
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IRRASSET="AS${PEER_AS}"
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fi
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# Remove diacritic first as potential question marks will remove afterward
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AS_NAME="$(echo ${AS_NAME} | iconv -f utf-8 -t ascii//TRANSLIT)"
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AS_NAME="$(echo ${AS_NAME} | tr '[:punct:]' '_')"
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AS_NAME="$(echo ${AS_NAME} | tr '[:space:]' '_')"
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AS_NAME="$(echo ${AS_NAME} | tr '[:lower:]' '[:upper:]')"
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AS_NAME="$(echo ${AS_NAME} | sed -E 's/^_+//;s/_+$//;s/_+/_/g')"
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IPv4_PFL="$(bgpq4 -4 -b -A -l AS${PEER_AS}_v4 -R 24 ${IRRASSET})"
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IPv6_PFL="$(bgpq4 -6 -b -A -l AS${PEER_AS}_v6 -R 48 ${IRRASSET})"
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if [ -z "${MAXPREF4}" ] || [ ${MAXPREF4} -eq 0 ]; then
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MAXPREF4=$(echo "${IPv4_PFL}" | wc -l)
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fi
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if [ "${MAXPREF4}" -lt 10 ]; then
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MAXPREF4=10
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fi
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if [ -z "${MAXPREF6}" ] || [ ${MAXPREF6} -eq 0 ]; then
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MAXPREF6=$(echo "${IPv6_PFL}" | wc -l)
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fi
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if [ "${MAXPREF6}" -lt 10 ]; then
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MAXPREF6=10
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fi
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# do we really trust peeringdb? we may want to limit maxpref
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mkdir -p "${BIRD_CONF_PATH}"/functions
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# AS16 - AS32 from whois AS47214
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if [ "${PEER_AS}" -gt 65535 ]; then
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# la t'es bien
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eval $(whois AS47214 | awk '/AS32 to AS16/ { print "AS"$5"="$7";" }' | sed -E 's/AS([0-9]+)/\1/g')
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eval COMMU_PEER_AS=\$AS${PEER_AS}
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else
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COMMU_PEER_AS=${PEER_AS}
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fi
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echo "# generated by $0 $@
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function check_import_${PEER_AS}_ipv4(int peeras; ip nexthop)
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prefix set AS${PEER_AS}_v4;
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{
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${IPv4_PFL}
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# check if the announced prefix is in the bgpq set
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if net !~ AS${PEER_AS}_v4 then return false;
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# reject the route if the first as is not the peer
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# or if the nexthop is not the peer as well
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# we also check the rpki status there
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return check_ipv4(peeras, nexthop);
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}
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filter bgp_filters_${PEER_AS}_out {
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if ! (source = RTS_BGP) then reject;
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if (${IXP_ASN},${COMMU_PEER_AS}) ~ bgp_community then accept;
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if (0,${COMMU_PEER_AS}) ~ bgp_community then reject;
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if (0,${IXP_ASN}) ~ bgp_community then reject;
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if (${IXP_ASN},${IXP_ASN}) ~ bgp_community then accept;
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else accept;
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}
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" > "${BIRD_CONF_PATH}/functions/${PEER_AS}_v4.conf"
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mkdir -p "${BIRD_CONF_PATH}"/peers
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# bird does not support dots in the filters name, it must be dashes
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DASH_IPv4="$(echo ${IPv4} | tr '.' '_')"
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if [ -f "/usr/local/etc/bird-override/bgp_${PEER_AS}_${AS_NAME}_${DASH_IPv4}.conf" ]; then
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BIRD_OVERRIDE_AFI_V4="include \"/usr/local/etc/bird-override/bgp_${PEER_AS}_${AS_NAME}_${DASH_IPv4}.conf\";"
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else
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BIRD_OVERRIDE_AFI_V4=""
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fi
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echo "# generated by $0 $@
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filter bgp_filters_${DASH_IPv4}_in_ipv4 {
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if (check_import_${PEER_AS}_ipv4(${PEER_AS}, ${IPv4})) then {
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# Here we can set localpref or remove a prefix, for example
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accept;
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}
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else {
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reject \"Prefix \", net, \" filtered IN from ${IPv4}\";
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}
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}
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protocol bgp bgp_${PEER_AS}_${AS_NAME}_${DASH_IPv4} from PEERS_IPv4 {
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description \"${AS_NAME} ${IRRASSET}\";
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neighbor ${IPv4} as ${PEER_AS};
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${BIRD_OVERRIDE_AFI_V4}
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ipv4 {
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receive limit ${MAXPREF4} action restart;
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import limit ${MAXPREF4} action disable;
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import filter bgp_filters_${DASH_IPv4}_in_ipv4;
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export filter bgp_filters_${PEER_AS}_out;
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};
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}
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" > "${BIRD_CONF_PATH}/peers/${PEER_AS}_${IPv4}.conf"
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echo "# generated by $0 $@
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function check_import_${PEER_AS}_ipv6(int peeras; ip nexthop)
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prefix set AS${PEER_AS}_v6;
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{
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${IPv6_PFL}
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# check if the announced prefix is in the bgpq set
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if net !~ AS${PEER_AS}_v6 then return false;
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# reject the route if the first as is not the peer
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# or if the nexthop is not the peer as well
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# we also check the rpki status there
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return check_ipv6(peeras, nexthop);
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}
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" > "${BIRD_CONF_PATH}/functions/${PEER_AS}_v6.conf"
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# bird does not support semicollons in the filters name, it must be dashes
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DASH_IPv6="$(echo ${IPv6} | tr ':' '_')"
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if [ -f "/usr/local/etc/bird-override/bgp_${PEER_AS}_${AS_NAME}_${DASH_IPv6}.conf" ]; then
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BIRD_OVERRIDE_AFI_V6="include \"/usr/local/etc/bird-override/bgp_${PEER_AS}_${AS_NAME}_${DASH_IPv6}.conf\";"
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else
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BIRD_OVERRIDE_AFI_V6=""
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fi
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echo "# generated by $0 $@
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filter bgp_filters_${DASH_IPv6}_in_ipv6 {
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if (check_import_${PEER_AS}_ipv6(${PEER_AS}, ${IPv6})) then {
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# Here we can set localpref or remove a prefix, for example
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accept;
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}
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else {
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reject \"Prefix \", net, \" filtered IN from ${IPv6}\";
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}
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}
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protocol bgp bgp_${PEER_AS}_${AS_NAME}_${DASH_IPv6} from PEERS_IPv6 {
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description \"${AS_NAME} ${IRRASSET}\";
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neighbor ${IPv6} as ${PEER_AS};
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${BIRD_OVERRIDE_AFI_V6}
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ipv6 {
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receive limit ${MAXPREF6} action restart;
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import limit ${MAXPREF6} action disable;
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import filter bgp_filters_${DASH_IPv6}_in_ipv6;
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export filter bgp_filters_${PEER_AS}_out;
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};
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}
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" > "${BIRD_CONF_PATH}/peers/${PEER_AS}_${IPv6}.conf"
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echo "# generated by $0 $@
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function check_import_${PEER_AS}_ipv6(int peeras; ip nexthop)
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prefix set AS${PEER_AS}_v6;
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{
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${IPv6_PFL}
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if net !~ AS${PEER_AS}_v6 then return false;
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return check_ipv6(peeras, nexthop);
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}
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" > "${BIRD_CONF_PATH}/functions/${PEER_AS}_v6.conf"
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53
update-check-import.sh
Executable file
53
update-check-import.sh
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@ -0,0 +1,53 @@
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#!/bin/sh
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set -e
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if [ ! -f /usr/local/etc/bird-peers-update.conf ]; then
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printf "Write /usr/local/etc/bird-peers-update.conf with at least "
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printf "PDB_API_KEY and BIRD_CONF_PATH vars\n"
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exit 1
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else
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. /usr/local/etc/bird-peers-update.conf
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fi
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# comma list
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NEVER_VIA_RS_LIST="$(
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curl -H 'Authorization: Api-Key '"${PDB_API_KEY}" \
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-s 'https://www.peeringdb.com/api/net?info_never_via_route_servers=1' | \
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jq '.data[].asn' | sort -n | tr '\n' ',' | sed 's/,/, /g;s/, $//'
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)"
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# bird set
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NEVER_VIA_RS_SET="$(
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printf "[ ${NEVER_VIA_RS_LIST} ]"
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)"
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if [ -n "${NEVER_VIA_RS_SET}" ]; then
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printf "# generated by $0 $@
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function check_import(int peeras; ip nexthop)
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int set reserved_asn;
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int set never_via_rs;
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{
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reserved_asn = [ 0, 64297..131071, 4200000000..4294967294, 4294967295 ];
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never_via_rs = ${NEVER_VIA_RS_SET};
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# Check that the next AS is our neighbour's.
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# Same for next-hop
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if bgp_path.first != peeras then return false;
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if bgp_next_hop != nexthop then return false;
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# AS_PATH too long (8 because a member could re-annonce its clients, and
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# the clients of it clients, and prepend on the IXP)
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if bgp_path.len > 8 then return false;
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# Don't accept if path contains a reserved AS
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# Disabled because it removes legit prefixes
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if bgp_path ~ reserved_asn then return false;
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if bgp_path ~ never_via_rs then return false;
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return true;
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}
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" > "${BIRD_CONF_PATH}"/check_import.conf
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fi
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41
update-irr-filters.sh
Executable file
41
update-irr-filters.sh
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@ -0,0 +1,41 @@
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#!/bin/sh
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# Update the 'never on rs' from peeringdb
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/usr/local/sbin/update-check-import.sh
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# Genereate the filters and peers using data from peeringdb
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/usr/local/sbin/generate-irr-filter.sh 16347 193.34.197.130 2001:7f8:6d::1:6347:1
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#/usr/local/sbin/generate-irr-filter.sh 200780 193.34.197.148 2001:7f8:6d::20:0780:1 # Appliwave a degage
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/usr/local/sbin/generate-irr-filter.sh 199917 193.34.197.157 2001:7f8:6d::19:9917:1
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/usr/local/sbin/generate-irr-filter.sh 209823 193.34.197.145 2001:7f8:6d::20:9823:1
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/usr/local/sbin/generate-irr-filter.sh 35625 193.34.197.129 2001:7f8:6d::3:5625:1
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#/usr/local/sbin/generate-irr-filter.sh 30781 193.34.197.154 2001:7f8:6d::3:0781:1 # FreePro pas sur les RS
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/usr/local/sbin/generate-irr-filter.sh 35360 193.34.197.144 2001:7f8:6d::3:5360:1
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/usr/local/sbin/generate-irr-filter.sh 34019 193.34.197.156 2001:7f8:6d::3:4019:1
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/usr/local/sbin/generate-irr-filter.sh 29075 193.34.197.140 2001:7f8:6d::2:9075:1
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/usr/local/sbin/generate-irr-filter.sh 25091 193.34.197.153 2001:7f8:6d::2:5091:1
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/usr/local/sbin/generate-irr-filter.sh 8298 193.34.197.143 2001:7f8:6d::8298:1
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/usr/local/sbin/generate-irr-filter.sh 2027 193.34.197.151 2001:7f8:6d::2027:1
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/usr/local/sbin/generate-irr-filter.sh 9036 193.34.197.132 2001:7f8:6d::1:9036:1
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/usr/local/sbin/generate-irr-filter.sh 199758 193.34.197.146 2001:7f8:6d::19:9758:1
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/usr/local/sbin/generate-irr-filter.sh 16276 193.34.197.142 2001:7f8:6d::1:6276:1
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/usr/local/sbin/generate-irr-filter.sh 2200 193.34.197.158 2001:7f8:6d::2200:1
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/usr/local/sbin/generate-irr-filter.sh 62119 193.34.197.162 2001:7f8:6d::6:2119:1
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/usr/local/sbin/generate-irr-filter.sh 206002 193.34.197.163 2001:7f8:6d::20:6002:1
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/usr/local/sbin/generate-irr-filter.sh 31235 193.34.197.133 2001:7f8:6d::3:1235:1
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/usr/local/sbin/generate-irr-filter.sh 210879 193.34.197.161 2001:7f8:6d::21:0879:1
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/usr/local/sbin/generate-irr-filter.sh 197922 193.34.197.131 2001:7f8:6d::19:7922:1
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/usr/local/sbin/generate-irr-filter.sh 210165 193.34.197.152 2001:7f8:6d::21:165:1
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/usr/local/sbin/generate-irr-filter.sh 35661 193.34.197.155 2001:7f8:6d::3:5661:1
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/usr/local/sbin/generate-irr-filter.sh 8218 193.34.197.141 2001:7f8:6d::8218:1
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/usr/local/sbin/generate-irr-filter.sh 6461 193.34.197.149 2001:7f8:6d::6461:1
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/usr/local/sbin/generate-irr-filter.sh 44097 193.34.197.134 2001:7f8:6d::4:4097:1
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/usr/local/sbin/generate-irr-filter.sh 208627 193.34.197.135 2001:7f8:6d::20:8627:1
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/usr/local/sbin/generate-irr-filter.sh 207910 193.34.197.136 2001:7f8:6d::20:7910:1
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/usr/local/sbin/generate-irr-filter.sh 205068 193.34.197.137 2001:7f8:6d::20:5068:1
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# Check if the config is valid and reload
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STATUS=$(birdc configure | grep -v BIRD)
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if [ -z "$(echo ${STATUS} | grep 'Reconfigured')" ]; then
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echo ${STATUS}
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fi
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