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626 lines
14 KiB
626 lines
14 KiB
#!/bin/sh /etc/rc.common
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START=90
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STOP=10
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USE_PROCD=1
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PROG=/usr/lib/ipsec/charon
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. $IPKG_INSTROOT/lib/functions.sh
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. $IPKG_INSTROOT/lib/functions/network.sh
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STRONGSWAN_CONF_FILE=/etc/strongswan.conf
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STRONGSWAN_VAR_CONF_FILE=/var/ipsec/strongswan.conf
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SWANCTL_CONF_FILE=/etc/swanctl/swanctl.conf
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SWANCTL_VAR_CONF_FILE=/var/swanctl/swanctl.conf
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WAIT_FOR_INTF=0
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CONFIG_FAIL=0
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time2seconds()
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{
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local timestring="$1"
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local multiplier number suffix
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suffix="${timestring//[0-9 ]}"
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number="${timestring%%$suffix}"
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[ "$number$suffix" != "$timestring" ] && return 1
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case "$suffix" in
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""|s)
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multiplier=1 ;;
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m)
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multiplier=60 ;;
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h)
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multiplier=3600 ;;
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d)
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multiplier=86400 ;;
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*)
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return 1 ;;
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esac
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echo $(( number * multiplier ))
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}
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seconds2time()
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{
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local seconds="$1"
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if [ $seconds -eq 0 ]; then
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echo "0s"
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elif [ $((seconds % 86400)) -eq 0 ]; then
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echo "$((seconds / 86400))d"
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elif [ $((seconds % 3600)) -eq 0 ]; then
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echo "$((seconds / 3600))h"
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elif [ $((seconds % 60)) -eq 0 ]; then
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echo "$((seconds / 60))m"
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else
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echo "${seconds}s"
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fi
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}
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file_reset() {
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: > "$1"
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}
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xappend() {
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local file="$1"
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shift
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echo "$@" >> "$file"
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}
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swan_reset() {
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file_reset "$STRONGSWAN_VAR_CONF_FILE"
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}
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swan_xappend() {
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xappend "$STRONGSWAN_VAR_CONF_FILE" "$@"
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}
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swan_xappend0() {
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swan_xappend "$@"
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}
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swan_xappend1() {
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swan_xappend " ""$@"
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}
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swan_xappend2() {
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swan_xappend " ""$@"
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}
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swan_xappend3() {
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swan_xappend " ""$@"
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}
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swan_xappend4() {
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swan_xappend " ""$@"
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}
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swanctl_reset() {
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file_reset "$SWANCTL_VAR_CONF_FILE"
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}
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swanctl_xappend() {
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xappend "$SWANCTL_VAR_CONF_FILE" "$@"
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}
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swanctl_xappend0() {
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swanctl_xappend "$@"
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}
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swanctl_xappend1() {
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swanctl_xappend " ""$@"
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}
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swanctl_xappend2() {
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swanctl_xappend " ""$@"
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}
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swanctl_xappend3() {
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swanctl_xappend " ""$@"
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}
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swanctl_xappend4() {
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swanctl_xappend " ""$@"
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}
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warning() {
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echo "WARNING: $@" >&2
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}
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fatal() {
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echo "ERROR: $@" >&2
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CONFIG_FAIL=1
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}
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is_aead() {
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local cipher="$1"
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case "$cipher" in
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aes*gcm*|aes*ccm*|aes*gmac*)
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return 0 ;;
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chacha20poly1305)
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return 0 ;;
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esac
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return 1
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}
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add_esp_proposal() {
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local encryption_algorithm
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local hash_algorithm
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local dh_group
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config_get encryption_algorithm "$1" encryption_algorithm
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config_get hash_algorithm "$1" hash_algorithm
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config_get dh_group "$1" dh_group
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# check for AEAD and clobber hash_algorithm if set
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if is_aead "$encryption_algorithm" && [ -n "$hash_algorithm" ]; then
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fatal "Can't have $hash_algorithm with $encryption_algorithm"
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hash_algorithm=
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fi
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[ -n "$encryption_algorithm" ] && \
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crypto="${crypto:+${crypto},}${encryption_algorithm}${hash_algorithm:+-${hash_algorithm}}${dh_group:+-${dh_group}}"
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}
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parse_esp_proposal() {
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local conf="$1"
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local var="$2"
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local crypto=""
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config_list_foreach "$conf" crypto_proposal add_esp_proposal
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export -n "$var=$crypto"
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}
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add_ike_proposal() {
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local encryption_algorithm
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local hash_algorithm
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local dh_group
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local prf_algorithm
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config_get encryption_algorithm "$1" encryption_algorithm
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config_get hash_algorithm "$1" hash_algorithm
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config_get dh_group "$1" dh_group
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config_get prf_algorithm "$1" prf_algorithm
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# check for AEAD and clobber hash_algorithm if set
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if is_aead "$encryption_algorithm" && [ -n "$hash_algorithm" ]; then
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fatal "Can't have $hash_algorithm with $encryption_algorithm"
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hash_algorithm=
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fi
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[ -n "$encryption_algorithm" ] && \
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crypto="${crypto:+${crypto},}${encryption_algorithm}${hash_algorithm:+-${hash_algorithm}}${prf_algorithm:+-${prf_algorithm}}${dh_group:+-${dh_group}}"
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}
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parse_ike_proposal() {
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local conf="$1"
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local var="$2"
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local crypto=""
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config_list_foreach "$conf" crypto_proposal add_ike_proposal
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export -n "$var=$crypto"
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}
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config_conn() {
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# Generic ipsec conn section shared by tunnel and transport
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local config_name="$1"
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local mode="$2"
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local local_subnet
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local local_nat
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local updown
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local firewall
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local remote_subnet
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local remote_sourceip
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local lifetime
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local dpdaction
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local closeaction
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local startaction
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local if_id
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local rekeytime
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config_get startaction "$1" startaction "route"
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config_get local_subnet "$1" local_subnet ""
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config_get local_nat "$1" local_nat ""
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config_get updown "$1" updown ""
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config_get firewall "$1" firewall ""
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config_get remote_subnet "$1" remote_subnet ""
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config_get remote_sourceip "$1" remote_sourceip ""
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config_get lifetime "$1" lifetime ""
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config_get dpdaction "$1" dpdaction "none"
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config_get closeaction "$1" closeaction "none"
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config_get if_id "$1" if_id ""
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config_get rekeytime "$1" rekeytime ""
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local esp_proposal
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parse_esp_proposal "$1" esp_proposal
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# translate from ipsec to swanctl
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case "$startaction" in
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add)
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startaction="none" ;;
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route)
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startaction="trap" ;;
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start|none|trap)
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# already using new syntax
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;;
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*)
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fatal "Startaction $startaction unknown"
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startaction=
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;;
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esac
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case "$closeaction" in
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none|clear)
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closeaction="none" ;;
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hold)
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closeaction="trap" ;;
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restart)
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closeaction="start" ;;
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trap|start)
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# already using new syntax
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;;
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*)
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fatal "Closeaction $closeaction unknown"
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closeaction=
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;;
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esac
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[ -n "$closeaction" -a "$closeaction" != "none" ] && warning "Closeaction $closeaction can cause instability"
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case "$dpdaction" in
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none)
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dpddelay="0s"
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dpdaction=
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;;
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clear)
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;;
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hold)
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dpdaction="trap" ;;
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restart)
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dpdaction="start" ;;
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trap|start)
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# already using new syntax
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;;
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*)
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fatal "Dpdaction $dpdaction unknown"
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dpdaction=
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;;
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esac
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[ -n "$local_nat" ] && local_subnet="$local_nat"
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swanctl_xappend3 "$config_name {"
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[ -n "$local_subnet" ] && swanctl_xappend4 "local_ts = $local_subnet"
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[ -n "$remote_subnet" ] && swanctl_xappend4 "remote_ts = $remote_subnet"
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[ -n "$if_id" ] && { swanctl_xappend4 "if_id_in = $if_id" ; swanctl_xappend4 "if_id_out = $if_id" ; }
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[ -n "$startaction" -a "$startaction" != "none" ] && swanctl_xappend4 "start_action = $startaction"
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[ -n "$closeaction" -a "$closeaction" != "none" ] && swanctl_xappend4 "close_action = $closeaction"
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swanctl_xappend4 "esp_proposals = $esp_proposal"
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swanctl_xappend4 "mode = $mode"
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if [ -n "$lifetime" ]; then
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swanctl_xappend4 "life_time = $lifetime"
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elif [ -n "$rekeytime" ]; then
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swanctl_xappend4 "life_time = $(seconds2time $(((110 * $(time2seconds $rekeytime)) / 100)))"
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fi
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[ -n "$rekeytime" ] && swanctl_xappend4 "rekey_time = $rekeytime"
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[ -n "$updown" ] && swanctl_xappend4 "updown = $updown"
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[ -n "$dpdaction" ] && swanctl_xappend4 "dpd_action = $dpdaction"
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swanctl_xappend3 "}"
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}
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config_tunnel() {
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config_conn "$1" "tunnel"
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}
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config_transport() {
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config_conn "$1" "transport"
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}
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config_remote() {
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local config_name="$1"
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local enabled
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local gateway
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local local_gateway
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local local_sourceip
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local local_leftip
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local remote_gateway
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local pre_shared_key
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local auth_method
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local keyingtries
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local dpddelay
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local inactivity
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local keyexchange
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local reqid
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local packet_marker
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local fragmentation
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local mobike
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local local_cert
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local local_key
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local ca_cert
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local rekeytime
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config_get_bool enabled "$1" enabled 0
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[ $enabled -eq 0 ] && return
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config_get gateway "$1" gateway
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config_get pre_shared_key "$1" pre_shared_key
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config_get auth_method "$1" authentication_method
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config_get local_identifier "$1" local_identifier ""
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config_get remote_identifier "$1" remote_identifier ""
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config_get local_sourceip "$1" local_sourceip ""
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config_get local_leftip "$1" local_leftip "%any"
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config_get keyingtries "$1" keyingtries "3"
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config_get dpddelay "$1" dpddelay "30s"
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config_get inactivity "$1" inactivity
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config_get keyexchange "$1" keyexchange "ikev2"
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config_get reqid "$1" reqid
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config_get packet_marker "$1" packet_marker
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config_get fragmentation "$1" fragmentation "yes"
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config_get_bool mobike "$1" mobike 1
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config_get local_cert "$1" local_cert ""
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config_get local_key "$1" local_key ""
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config_get ca_cert "$1" ca_cert ""
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config_get rekeytime "$1" rekeytime
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config_get overtime "$1" overtime
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case "$fragmentation" in
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0)
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fragmentation="no" ;;
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1)
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fragmentation="yes" ;;
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yes|accept|force|no)
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# already using new syntax
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;;
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*)
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fatal "Fragmentation $fragmentation not supported"
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fragmentation=
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;;
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esac
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[ "$gateway" = "any" ] && remote_gateway="%any" || remote_gateway="$gateway"
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[ -z "$local_gateway" ] && {
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local ipdest
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[ "$remote_gateway" = "%any" ] && ipdest="1.1.1.1" || ipdest="$remote_gateway"
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local_gateway=`ip -o route get $ipdest | awk '/ src / { gsub(/^.* src /,""); gsub(/ .*$/, ""); print $0}'`
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}
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local ike_proposal
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parse_ike_proposal "$1" ike_proposal
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[ -n "$firewall" ] && fatal "Firewall not supported"
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swanctl_xappend0 "# config for $config_name"
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swanctl_xappend0 "connections {"
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swanctl_xappend1 "$config_name {"
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swanctl_xappend2 "local_addrs = $local_leftip"
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swanctl_xappend2 "remote_addrs = $remote_gateway"
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[ -n "$local_sourceip" ] && swanctl_xappend2 "vips = $local_sourceip"
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[ -n "$fragmentation" ] && swanctl_xappend2 "fragmentation = $fragmentation"
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swanctl_xappend2 "local {"
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swanctl_xappend3 "auth = $auth_method"
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[ -n "$local_identifier" ] && swanctl_xappend3 "id = \"$local_identifier\""
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[ "$auth_method" = pubkey ] && swanctl_xappend3 "certs = $local_cert"
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swanctl_xappend2 "}"
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swanctl_xappend2 "remote {"
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swanctl_xappend3 "auth = $auth_method"
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[ -n "$remote_identifier" ] && swanctl_xappend3 "id = \"$remote_identifier\""
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swanctl_xappend2 "}"
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swanctl_xappend2 "children {"
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config_list_foreach "$1" tunnel config_tunnel
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config_list_foreach "$1" transport config_transport
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swanctl_xappend2 "}"
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case "$keyexchange" in
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ike)
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;;
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ikev1)
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swanctl_xappend2 "version = 1" ;;
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ikev2)
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swanctl_xappend2 "version = 2" ;;
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*)
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fatal "Keyexchange $keyexchange not supported"
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keyexchange=
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;;
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esac
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[ $mobike -eq 1 ] && swanctl_xappend2 "mobike = yes" || swanctl_xappend2 "mobike = no"
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if [ -n "$rekeytime" ]; then
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swanctl_xappend2 "rekey_time = $rekeytime"
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if [ -z "$overtime" ]; then
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overtime=$(seconds2time $(($(time2seconds $rekeytime) / 10)))
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fi
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fi
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[ -n "$overtime" ] && swanctl_xappend2 "over_time = $overtime"
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swanctl_xappend2 "proposals = $ike_proposal"
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[ -n "$dpddelay" ] && swanctl_xappend2 "dpd_delay = $dpddelay"
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[ "$keyingtries" = "%forever" ] && swanctl_xappend2 "keyingtries = 0" || swanctl_xappend2 "keyingtries = $keyingtries"
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swanctl_xappend1 "}"
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swanctl_xappend0 "}"
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if [ "$auth_method" = pubkey ]; then
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swanctl_xappend0 ""
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swanctl_xappend0 "secrets {"
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swanctl_xappend1 "rsa {"
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swanctl_xappend2 "filename = $local_key"
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swanctl_xappend1 "}"
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swanctl_xappend0 "}"
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swanctl_xappend0 ""
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if [ -n "$ca_cert" ]; then
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swanctl_xappend0 "authorities {"
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swanctl_xappend1 "$config_name {"
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swanctl_xappend2 "cacert = $ca_cert"
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swanctl_xappend1 "}"
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swanctl_xappend0 "}"
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fi
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elif [ "$auth_method" = psk ]; then
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swanctl_xappend0 ""
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swanctl_xappend0 "secrets {"
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swanctl_xappend1 "ike {"
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swanctl_xappend2 "secret = $pre_shared_key"
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if [ -z "$local_id" ]; then
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swanctl_xappend2 "id1 = $local_id"
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if [ -z "$remote_id" ]; then
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swanctl_xappend2 "id2 = $remote_id"
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fi
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fi
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else
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fatal "AuthenticationMode $auth_mode not supported"
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fi
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swanctl_xappend0 ""
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}
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do_preamble() {
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swanctl_xappend0 "# generated by /etc/init.d/swanctl"
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}
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config_ipsec() {
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local debug
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local rtinstall_enabled
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local routing_tables_ignored
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local routing_table
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local routing_table_id
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local interface
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local device_list
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config_get debug "$1" debug 0
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config_get_bool rtinstall_enabled "$1" rtinstall_enabled 1
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[ $rtinstall_enabled -eq 1 ] && install_routes=yes || install_routes=no
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# prepare extra charon config option ignore_routing_tables
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for routing_table in $(config_get "$1" "ignore_routing_tables"); do
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if [ "$routing_table" -ge 0 ] 2>/dev/null; then
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routing_table_id=$routing_table
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else
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routing_table_id=$(sed -n '/[ \t]*[0-9]\+[ \t]\+'$routing_table'[ \t]*$/s/[ \t]*\([0-9]\+\).*/\1/p' /etc/iproute2/rt_tables)
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fi
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[ -n "$routing_table_id" ] && append routing_tables_ignored "$routing_table_id"
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done
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local interface_list=$(config_get "$1" "interface")
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if [ -z "$interface_list" ]; then
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WAIT_FOR_INTF=0
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else
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for interface in $interface_list; do
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network_get_device device $interface
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[ -n "$device" ] && append device_list "$device" ","
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done
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[ -n "$device_list" ] && WAIT_FOR_INTF=0 || WAIT_FOR_INTF=1
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|
fi
|
|
}
|
|
|
|
do_postamble() {
|
|
swan_xappend0 "# generated by /etc/init.d/swanctl"
|
|
swan_xappend0 "charon {"
|
|
swan_xappend1 "install_routes = $install_routes"
|
|
[ -n "$routing_tables_ignored" ] && swan_xappend1 "ignore_routing_tables = $routing_tables_ignored"
|
|
[ -n "$device_list" ] && swan_xappend1 "interfaces_use = $device_list"
|
|
swan_xappend1 "start-scripts {"
|
|
swan_xappend2 "load-all = /usr/sbin/swanctl --load-all --noprompt"
|
|
swan_xappend1 "}"
|
|
swan_xappend1 "syslog {"
|
|
swan_xappend2 "identifier = ipsec"
|
|
swan_xappend2 "daemon {"
|
|
swan_xappend3 "default = $debug"
|
|
swan_xappend2 "}"
|
|
swan_xappend1 "}"
|
|
swan_xappend0 "}"
|
|
}
|
|
|
|
prepare_env() {
|
|
mkdir -p /var/ipsec /var/swanctl
|
|
|
|
swan_reset
|
|
swanctl_reset
|
|
do_preamble
|
|
|
|
config_load ipsec
|
|
config_foreach config_ipsec ipsec
|
|
config_foreach config_remote remote
|
|
|
|
do_postamble
|
|
}
|
|
|
|
service_running() {
|
|
swanctl --stats > /dev/null 2>&1
|
|
}
|
|
|
|
reload_service() {
|
|
running && {
|
|
prepare_env
|
|
[ $WAIT_FOR_INTF -eq 0 ] && {
|
|
swanctl --load-all --noprompt
|
|
return
|
|
}
|
|
}
|
|
|
|
start
|
|
}
|
|
|
|
stop_service() {
|
|
swan_reset
|
|
swanctl_reset
|
|
}
|
|
|
|
service_triggers() {
|
|
procd_add_reload_trigger "ipsec"
|
|
config load "ipsec"
|
|
}
|
|
|
|
start_service() {
|
|
prepare_env
|
|
|
|
[ $WAIT_FOR_INTF -eq 1 ] && return
|
|
|
|
if [ $CONFIG_FAIL -ne 0 ]; then
|
|
procd_set_param error "Invalid configuration"
|
|
return
|
|
fi
|
|
|
|
procd_open_instance
|
|
|
|
procd_set_param command $PROG
|
|
|
|
procd_set_param file $SWANCTL_CONF_FILE
|
|
procd_append_param file /etc/swanctl/conf.d/*.conf
|
|
procd_append_param file $STRONGSWAN_CONF_FILE
|
|
|
|
procd_set_param respawn
|
|
|
|
procd_close_instance
|
|
}
|