mirror of
https://github.com/Telecominfraproject/wlan-lanforge-scripts.git
synced 2025-10-28 17:32:35 +00:00
467 lines
12 KiB
Bash
Executable File
467 lines
12 KiB
Bash
Executable File
#!/bin/bash
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set -x
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set -e
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[ -f /root/strongswan-config ] && . /root/strongswan-config ||:
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ETC=${ETC:=/etc/strongswan}
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SWAND="$ETC/strongswan.d"
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IPSECD="$ETC/ipsec.d"
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SWANC="$ETC/swanctl"
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NOWSEC=`date +%s`
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SWAN_LIBX=${SWAN_LIBX:=/usr/libexec/strongswan}
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[ -d $SWAN_LIBX ] || {
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echo "SWAN_LIBX $SWAN_LIBX not found. Plese set SWAN_LIBX in /root/strongswan-config"
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exit 1
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}
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export LD_LIBRARY_PATH="$SWAN_LIBX:$LD_LIBRARY_PATH"
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WAN_IF=${WAN_IF:=eth1}
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WAN_IP=${WAN_IP:=10.1.99.1}
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WAN_CONCENTRATOR_IP=${WAN_CONCENTRATOR_IP:=10.1.99.1}
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# most for the concentrator
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XIF_IP=${XIF_IP:=10.9.99.1} # for concentrator
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XIF_CLIENT_IP=${XIF_IP:=10.9.99.2} # for station
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CLIENT_OUTTER_IP=${CLIENT_OUTTER_IP:=10.4.99.1}
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CLIENT_NETNS_IP=${CLIENT_NETNS_IP:=10.4.99.2}
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function initialize_vrf() {
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local WANDEV=$WAN_IF
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local vrfid=$1
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[[ $vrfid = _* ]] && vrfid=${vrfid#_}
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[[ $vrfid = vrf* ]] && vrfid=${vrfid#vrf}
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local vrf_if="vrf${vrfid}"
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local xfrm_if="xfrm${vrfid}"
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# do you need this?
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#sysctl -w net.ipv4.ip_forward=1
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#sysctl -w net.ipv4.conf.all.rp_filter=0
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# setup vrf
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ip link add $vrf_if type vrf table $vrfid ||:
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ip link set dev $vrf_if up ||:
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ip route add unreachable default metric 4278198272 vrf $vrf_if ||:
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# create tunnel device
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ip li del $xfrm_if >/dev/null 2>&1 ||:
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$SWAN_LIBX/xfrmi -n $xfrm_if -i $vrfid -d $WANDEV ||:
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ip li set dev $xfrm_if up
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ip li set dev $xfrm_if master $vrf_if ||:
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ip a add 169.254.24.201/32 dev $xfrm_if scope link ||:
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ip ro add default dev $xfrm_if vrf $vrf_if ||:
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#ip -6 ro add default dev $xfrm_if vrf $vrf_if
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}
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function initialize_client_if() {
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local intf=$1
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local vrfid=`get_vrf_for_if $1`
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[[ $vrfid = _* ]] && vrfid=${vrfid#_}
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[[ $vrfid = vrf* ]] && vrfid=${vrfid#vrf}
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local vrf_if="vrf${vrfid}"
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local xfrm_if="xfrm${vrfid}"
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# do you need this?
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#sysctl -w net.ipv4.ip_forward=1
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#sysctl -w net.ipv4.conf.all.rp_filter=0
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# setup vrf
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ip link add $vrf_if type vrf table $vrfid ||:
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ip link set dev $vrf_if up ||:
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ip route add unreachable default metric 4278198272 vrf $vrf_if ||:
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# create tunnel device
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ip li del $xfrm_if >/dev/null 2>&1 ||:
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$SWAN_LIBX/xfrmi -n $xfrm_if -i $vrfid -d $intf ||:
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ip li set dev $xfrm_if up
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ip li set dev $xfrm_if master $vrf_if ||:
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ip a add 169.254.24.201/32 dev $xfrm_if scope link ||:
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ip ro add default dev $xfrm_if vrf $vrf_if ||:
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#ip -6 ro add default dev $xfrm_if vrf $vrf_if
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}
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function initialize_fake_client_netns() {
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local vrfid=$1
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local wan_if=$1
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[[ x$vrfid = x ]] && echo "cannot use blank argument" && exit 1
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if [[ $1 != *vrf* ]]; then
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vrfid=`get_vrf_for_if $1`
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fi
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[[ $vrfid = _* ]] && vrfid=${vrfid#_}
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[[ $vrfid = vrf* ]] && vrfid=${vrfid#vrf}
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echo "VRFID $vrfid"
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sleep 5
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sysctl net.ipv4.conf.all.rp_filter=0
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sysctl net.ipv4.conf.default.rp_filter=0
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ip netns add ts-vrf-${vrfid} ||:
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ip netns exec ts-vrf-${vrfid} ip li set dev lo up ||:
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ip li del ts-vrf-${vrfid}a ||:
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ip link add ts-vrf-${vrfid}a type veth peer name ts-vrf-${vrfid}b netns ts-vrf-${vrfid} ||:
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ip netns exec ts-vrf-${vrfid} ip link set dev ts-vrf-${vrfid}b up ||:
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ip netns exec ts-vrf-${vrfid} ip a add dev ts-vrf-${vrfid}b $CLIENT_NETNS_IP/24 ||:
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ip netns exec ts-vrf-${vrfid} ip ro add default via $CLIENT_OUTTER_IP ||:
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ip li set dev ts-vrf-${vrfid}a up
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ip li set dev ts-vrf-${vrfid}a master vrf${vrfid} ||:
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ip a add $CLIENT_OUTTER_IP/24 dev ts-vrf-${vrfid}a ||:
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}
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function initialize() {
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[ -d "$SWANC/peers-available" ] || mkdir "$SWANC/peers-available"
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[ -d "$SWANC/peers-enabled" ] || mkdir "$SWANC/peers-enabled"
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[ -f "$SWANC/secrets.conf" ] || touch "$SWANC/secrets.conf"
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systemctl enable strongswan
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systemctl daemon-reload
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systemct start strongswan || {
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journalctl -xe
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}
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}
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function vrf_ping() {
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local vrfid=$1
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ip netns exec ts-vrf-$vrfid ping 10.0.201.2
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}
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function backup_keys() {
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if [ -f $SWANC/secrets.conf ]; then
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cp $SWANC/secrets.conf $SWANC/.secrets.conf.$NOWSEC
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fi
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}
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function deactivate_peer() {
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[ -e "$SWANC/peers-enabled/${1}.conf" ] || {
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if [ -e "$SWANC/peers-available/${1}.conf" ]; then
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echo "Peer $1 deactivated."
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else
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echo "No peer config at $SWANC/peers-available/${1}.conf"
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fi
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exit 0
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}
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echo -n "Deactivating $1..."
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rm "$SWANC/peers-enabled/${1}.conf"
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swanctl --load-all
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echo "done"
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}
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function activate_peer() {
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[ -f "$SWANC/peers-available/${1}.conf" ] || {
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echo "No peer config at $SWANC/peers-available/${1}.conf"
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exit 1
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}
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if [ -e "$SWANC/peers-enabled/${1}.conf" ]; then
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echo "Peer $1 actiated."
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else
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echo -n "Activating $1..."
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ln -s" $SWANC/peers-available/${1}.conf" "$SWANC/peers-enabled/"
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swanctl --load-all
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echo "done"
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fi
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}
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function create_concentrator_peer() {
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if [ -f "$SWANC/peers-available/${1}.conf" ]; then
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echo "Peer $1 config already exists."
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return;
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fi
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cat > "$SWANC/peers-available/${1}.conf" <<EOF
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$1 {
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local_addrs = %any
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remote_addrs = %any
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unique = replace
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local {
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auth = psk
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id = @${1}-slave.loc # identifier, use VRF ID
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}
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remote {
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auth = psk
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id = @${1}-master.loc # remote id, use VRF ID
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}
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children {
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${1}_sa {
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local_ts = 0.0.0.0/0, ::/0
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remote_ts = 0.0.0.0/0, ::/0
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if_id_out = 1 # xfrm interface id, use VRF ID
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if_id_in = 1 # xfrm interface id, use VRF ID
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start_action = trap
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life_time = 1h
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rekey_time = 55m
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esp_proposals = aes256gcm128-modp3072 # good for Intel HW
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dpd_action = trap
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}
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}
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keyingtries = 0
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dpd_delay = 30
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version = 2
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mobike = yes
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rekey_time = 23h
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over_time = 1h
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proposals = aes256-sha256-modp3072
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}
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EOF
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}
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function create_station_peer() {
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if [ -f "$SWANC/peers-available/${1}.conf-remote" ]; then
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echo "Peer $1 remote config already exists."
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echo "Remove $SWANC/peers-available/${1}.conf-remote to continue."
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exit 1;
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fi
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cat > "$SWANC/peers-available/${1}.conf-remote" <<EOF
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$1 {
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local_addrs = %any # use any local ip to connect to remote
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remote_addrs = $WAN_CONCENTRATOR_IP
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unique = replace
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local {
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auth = psk
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id = @${1}-master.loc # identifier, use VRF ID
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}
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remote {
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auth = psk
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id = @${1}-slave.loc # remote id, use VRF ID
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}
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children {
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${1}_sa {
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local_ts = 0.0.0.0/0, ::/0
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remote_ts = 0.0.0.0/0, ::/0
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if_id_out = 1 # xfrm interface id, use VRF ID
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if_id_in = 1 # xfrm interface id, use VRF ID
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start_action = trap
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life_time = 1h
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rekey_time = 55m
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esp_proposals = aes256gcm128-modp3072 # good for Intel HW
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dpd_action = trap
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}
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}
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keyingtries = 0
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dpd_delay = 30
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version = 2
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mobike = yes
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rekey_time = 23h
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over_time = 1h
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proposals = aes256-sha256-modp3072
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}
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EOF
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}
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function create_concentrator_key() {
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[ -f "$SWANC/secrets.conf" ] || {
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echo "$SWANC/secrets.conf not found!"
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exit 1
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}
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backup_keys
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k=`dd if=/dev/urandom bs=20 count=1 | base64`
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cat >> "$SWANC/secrets.conf" <<EOF
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ike-${1}-master {
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id = ${1}-master.loc # use remote id specified in tunnel config
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secret = "$k"
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}
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EOF
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echo "created $1 key"
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}
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function create_station_key() {
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[ -f "$SWANC/secrets.conf" ] || {
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echo "$SWANC/secrets.conf not found!"
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exit 1
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}
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backup_keys
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local conc_keys=(`egrep -B4 "^ike-${1}-master \{" $SWANC/secrets.conf`)
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local lines=()
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local foundit=0
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local line
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for line in "${conc_keys[@]}"; do
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echo "LINE $line"
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[[ $line = *-master.loc ]] && {
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line=${line/master.loc/slave.loc}
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} ||:
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lines+=($line)
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done
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for line in "${lines}"; do
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echo "$line"
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done > $SWANC/${1}-secrets.conf-remote
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echo "created $SWANC/${1}-secrets.conf-remote"
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}
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function get_vrf_for_if() {
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local ifmaster=`ip -o li show $1 | egrep -o '(master \S+)'`
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[[ x${ifmaster} = x ]] && echo "\nNo master found for $1" && exit 1
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echo ${ifmaster#master }
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}
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function enable_concentrator_ipsec_if() {
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local vrf_if=$1
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if [[ $vrf_if != vrf* ]]; then
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vrf_if=$(get_vrf_for_if $1)
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fi
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local vrfnum=${vrf_if#vrf}
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local xif="xfrm${vrfnum}"
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sleep 1
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$SWAN_LIBX/xfrmi -n $xif -i ${vrfnum} -d $WAN_IF ||:
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sleep 1
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ip link set dev $xif up ||:
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ip link set dev $xif master $vrf_if ||:
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ip address add $XIF_IP/32 dev $xif scope link ||:
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#ip route add default dev $xif vrf $vrfnum ||: # doesn't work quite this way
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#ip route add 10.0.0.0/8 dev $xif vrf $vrfnum ||: # not quite
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ip route add default dev $xif vrf $vrf_if ||:
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sleep 1
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}
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function enable_station_ipsec_if() {
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local vrf_if=$1
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local wan_if=$1
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if [[ $wan_if = *vrf* ]]; then
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echo "enable_station_ipsec_if wants L2 interface, not vrf"
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exit 1
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fi
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if [[ $vrf_if != vrf* ]]; then
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vrf_if=$(get_vrf_for_if $1)
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fi
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[[ $vrf_if = _* ]] && vrf_if=${vrf_if#_}
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local vrfnum=${vrf_if#vrf}
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local xif="xfrm${vrfnum}"
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sleep 1
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$SWAN_LIBX/xfrmi -n $xif -i ${vrfnum} -d $wan_if ||:
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sleep 1
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ip link set dev $xif up ||:
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ip link set dev $xif master $vrf_if ||:
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ip address add $XIF_CLIENT_IP/32 dev $xif scope link ||:
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#ip route add default dev $xif vrf $vrfnum ||: # doesn't work quite this way
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#ip route add 10.0.0.0/8 dev $xif vrf $vrfnum ||: # not quite
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sleep 1
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ip route add 10.4.99.1/32 dev $xif vrf $vrf_if ||:
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ip route add 10.9.99.1/32 dev $xif vrf $vrf_if ||:
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ip route add 10.1.99.0/24 dev $xif vrf $vrf_if ||:
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sleep 1
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}
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function check_arg() {
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if [ ! -f "$SWANC/secrets.conf" ] ; then
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echo "$SWANC/secrets.conf not found. Suggest running $0 -i, bye."
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exit 1
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fi
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[[ z$1 != z ]] || {
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echo "Please give me a peer name, bye."
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exit 1
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}
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}
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function activate_all() {
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local f
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for f in $SWANC/*.conf; do
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echo "CONF $f"
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f=`basename $f`
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[[ $f = secrets.conf ]] && continue ||:
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[[ $f = swanctl.conf ]] && continue ||:
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[[ $f = *.conf ]] && f=${f%.conf}
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echo "f now $f"
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activate_peer $f
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done
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}
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function copy_config() {
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local vrf=`get_vrf_for_if $WAN_IF`
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ip vrf exec $vrf scp $WAN_IP:$SWANC/${1}-secrets.conf-remote $SWANC/${1}-secrets.conf
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ip vrf exec $vrf scp $WAN_IP:$SWANC/peers-available/${1}.conf-remote $SWANC/peers-available/${1}.conf
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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# M A I N
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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while getopts "a:c:d:f:g:p:v:b:ehi" arg; do
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case $arg in
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a)
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check_arg $OPTARG
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echo "Activating $OPTARG"
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activate_peer $OPTARG
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;;
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b)
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check_arg $OPTARG
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initialize_vrf $OPTARG
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enable_concentrator_ipsec_if $OPTARG
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initialize_fake_client_netns $OPTARG
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swanctl --load-all
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sleep 1
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swanctl --list-conns
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;;
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c)
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check_arg $OPTARG
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echo "Creating $OPTARG"
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create_concentrator_peer $OPTARG
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create_station_peer $OPTARG
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create_concentrator_key $OPTARG
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create_station_key $OPTARG
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;;
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d)
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check_arg $OPTARG
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echo "Deactivating $OPTARG"
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deactivate_peer $OPTARG
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;;
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e)
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activate_all
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swanctl --load-all
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sleep 1
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swanctl --list-conns
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;;
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f)
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check_arg $OPTARG
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copy_config $OPTARG
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;;
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g)
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check_arg $OPTARG
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initialize_client_if $OPTARG
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enable_station_ipsec_if $OPTARG
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initialize_fake_client_netns $OPTARG
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swanctl --load-all
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sleep 1
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swanctl --list-conns
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;;
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h)
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cat <<EOF
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$0 -i : initialize /etc/strongswan directories
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-b vrfX : enable ipsec transform intf on concentrator vrfX
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-c vrfX : create_station_peer then create_station_key
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-a vrfX : activate peer
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-d vrfX : deactivate peer
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-e : activate all peers
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-f vrfX : copy config files from $WAN_IF:/etc/strongswan/swanctl/\$peer.conf-remote
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-g ethX : enable ipsec transform intf on station ethX
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-p : print peers
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-v intf : get vrf for interface
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-h : help
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EOF
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;;
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i)
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initialize
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echo "Initialized."
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exit 0;
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;;
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p)
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#echo " print peers"
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strongswan list
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;;
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v)
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check_arg $OPTARG
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get_vrf_for_if $OPTARG
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;;
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*) echo "Unknown option: $arg"
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esac
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done
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