mirror of
https://github.com/bol-van/zapret.git
synced 2025-05-24 22:32:58 +03:00
init: deduplicate shell code
This commit is contained in:
bol-van
@@ -44,261 +44,109 @@ NFQWS_OPT_DESYNC_HTTPS6="${NFQWS_OPT_DESYNC_HTTPS6:-$NFQWS_OPT_DESYNC_HTTPS}"
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# we use low level function from network.sh to avoid this limitation
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# it can change theoretically and stop working
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network_find_wan_all()
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network_find_wan4_all()
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{
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__network_ifstatus "$1" "" "[@.route[@.target='0.0.0.0' && !@.table]].interface" "" 10 2>/dev/null && return
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network_find_wan $1
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}
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network_find_wan_all()
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{
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network_find_wan4_all "$@"
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}
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network_find_wan6_all()
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{
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__network_ifstatus "$1" "" "[@.route[@.target='::' && !@.table]].interface" "" 10 2>/dev/null && return
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network_find_wan6 $1
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}
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route_localnet()
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{
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for lan in $OPENWRT_LAN; do
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network_get_device DEVICE $lan
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[ -n "$DEVICE" ] || continue
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sysctl -qw net.ipv4.conf.$DEVICE.route_localnet=1
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done
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}
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dnat6_target()
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{
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# $1 - lan network name
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# $2 - var to store target ip6
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# get target ip address for DNAT. prefer link locals
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# tpws should be as inaccessible from outside as possible
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# link local address can appear not immediately after ifup
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# DNAT6_TARGET=- means attempt was made but address was not found (to avoid multiple re-attempts)
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local DNAT6_TARGET DVAR=DNAT6_TARGET_$1
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DVAR=$(echo $DVAR | sed 's/[^a-zA-Z0-9_]/_/g')
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eval DNAT6_TARGET="\$$DVAR"
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[ -n "$2" ] && eval $2=''
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[ -n "$DNAT6_TARGET" ] || {
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# no reason to query if its down
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network_is_up $1 || return
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local DEVICE
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network_get_device DEVICE $1
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local ct=0
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while
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DNAT6_TARGET=$(get_ipv6_linklocal $DEVICE)
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[ -n "$DNAT6_TARGET" ] && break
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[ "$ct" -ge "$LINKLOCAL_WAIT_SEC" ] && break
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echo $DEVICE: waiting for the link local for another $(($LINKLOCAL_WAIT_SEC - $ct)) seconds ...
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ct=$(($ct+1))
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sleep 1
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do :; done
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[ -n "$DNAT6_TARGET" ] || {
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echo $DEVICE: no link local. getting global
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DNAT6_TARGET=$(get_ipv6_global $DEVICE)
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[ -n "$DNAT6_TARGET" ] || {
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echo $DEVICE: could not get any address
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DNAT6_TARGET=-
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}
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}
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eval $DVAR="$DNAT6_TARGET"
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network_is_up $1 || {
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[ -n "$2" ] && eval $2=''
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return
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}
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[ -n "$2" ] && eval $2="$DNAT6_TARGET"
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}
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local DEVICE
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network_get_device DEVICE $1
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_dnat6_target $DEVICE $2
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}
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set_route_localnet()
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{
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# $1 - 1 = enable, 0 = disable
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[ "$DISABLE_IPV4" = "1" ] || {
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local lan DEVICE
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for lan in $OPENWRT_LAN; do
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network_get_device DEVICE $lan
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[ -n "$DEVICE" ] || continue
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sysctl -q -w net.ipv4.conf.$DEVICE.route_localnet=$1
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done
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}
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}
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prepare_route_localnet()
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{
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set_route_localnet 1
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}
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unprepare_route_localnet()
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{
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set_route_localnet 0
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}
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prepare_tpws_fw4()
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{
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# otherwise linux kernel will treat 127.0.0.0/8 as "martian" ip and refuse routing to it
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# NOTE : kernels <3.6 do not have this feature. consider upgrading or change DNAT to REDIRECT and do not bind to 127.0.0.0/8
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[ "$DISABLE_IPV4" = "1" ] || {
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iptables -N input_rule_zapret 2>/dev/null
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ipt input_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
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ipta input_rule_zapret -d 127.0.0.0/8 -j DROP
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ipt INPUT ! -i lo -j input_rule_zapret
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prepare_route_localnet
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}
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}
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unprepare_tpws_fw4()
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{
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[ "$DISABLE_IPV4" = "1" ] || {
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unprepare_route_localnet
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ipt_del INPUT ! -i lo -j input_rule_zapret
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iptables -F input_rule_zapret 2>/dev/null
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iptables -X input_rule_zapret 2>/dev/null
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}
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}
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unprepare_tpws_fw()
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{
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unprepare_tpws_fw4
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local DLAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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_set_route_localnet $1 $DLAN
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}
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fw_nfqws_pre4()
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fw_nfqws_post_x()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv4
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# $2 - filter
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# $3 - queue number
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# $4 - ip version : 4 or 6
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local DEVICE wan_iface
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network_find_wan${4}_all ifaces
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call_for_multiple_items network_get_device DWAN "$ifaces"
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[ "$DISABLE_IPV4" = "1" ] || {
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network_find_wan_all wan_iface
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for ext_iface in $wan_iface; do
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network_get_device DEVICE $ext_iface
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ipt_add_del $1 PREROUTING -t mangle -i $DEVICE -p tcp $2 $IPSET_EXCLUDE src -j NFQUEUE --queue-num $3 --queue-bypass
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done
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}
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}
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fw_nfqws_pre6()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv6
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# $3 - queue number
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local DEVICE wan_iface
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[ "$DISABLE_IPV6" = "1" ] || {
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network_find_wan6_all wan_iface
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for ext_iface in $wan_iface; do
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network_get_device DEVICE $ext_iface
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ipt6_add_del $1 PREROUTING -t mangle -i $DEVICE -p tcp $2 $IPSET_EXCLUDE6 src -j NFQUEUE --queue-num $3 --queue-bypass
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done
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}
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}
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fw_nfqws_pre()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv4
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# $3 - filter ipv6
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# $4 - queue number
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fw_nfqws_pre4 $1 "$2" $4
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fw_nfqws_pre6 $1 "$3" $4
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_fw_nfqws_post${4} $1 "$2" $3 "$(unique $DWAN)"
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}
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fw_nfqws_post4()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv4
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# $3 - queue number
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local DEVICE wan_iface
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[ "$DISABLE_IPV4" = "1" ] || {
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network_find_wan_all wan_iface
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for ext_iface in $wan_iface; do
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network_get_device DEVICE $ext_iface
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ipt_add_del $1 POSTROUTING -t mangle -o $DEVICE -p tcp $2 $IPSET_EXCLUDE dst -j NFQUEUE --queue-num $3 --queue-bypass
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done
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}
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fw_nfqws_post_x $1 "$2" $3 4
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}
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fw_nfqws_post6()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv6
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# $3 - queue number
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local DEVICE wan_iface
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[ "$DISABLE_IPV6" = "1" ] || {
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network_find_wan6_all wan_iface
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for ext_iface in $wan_iface; do
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network_get_device DEVICE $ext_iface
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ipt6_add_del $1 POSTROUTING -t mangle -o $DEVICE -p tcp $2 $IPSET_EXCLUDE6 dst -j NFQUEUE --queue-num $3 --queue-bypass
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done
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}
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fw_nfqws_post_x $1 "$2" $3 6
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}
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fw_nfqws_post()
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fw_tpws_x()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv4
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# $3 - filter ipv6
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# $4 - queue number
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# $2 - filter
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# $3 - tpws port
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# $4 - ip version : 4 or 6
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fw_nfqws_post4 $1 "$2" $4
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fw_nfqws_post6 $1 "$3" $4
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local script ifaces DLAN DWAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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network_find_wan${4}_all ifaces
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call_for_multiple_items network_get_device DWAN "$ifaces"
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_fw_tpws${4} $1 "$2" $3 "$DLAN" "$(unique $DWAN)"
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}
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IPT_OWNER="-m owner ! --uid-owner $WS_USER"
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fw_tpws4()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv4
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# $3 - tpws port
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local lan DEVICE ext_iface wan_iface
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[ "$DISABLE_IPV4" = "1" ] || {
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network_find_wan_all wan_iface
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for ext_iface in $wan_iface; do
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network_get_device DEVICE $ext_iface
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ipt_add_del $1 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
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done
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[ "$1" = 1 ] && prepare_tpws_fw4
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for lan in $OPENWRT_LAN; do
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network_get_device DEVICE $lan
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[ -n "$DEVICE" ] || continue
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ipt_add_del $1 PREROUTING -t nat -i $DEVICE -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
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done
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}
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fw_tpws_x $1 "$2" $3 4
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}
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fw_tpws6()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv6
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# $3 - tpws port
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local lan DEVICE ext_iface wan_iface DNAT6
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[ "$DISABLE_IPV6" = "1" ] || {
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network_find_wan6_all wan_iface
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for ext_iface in $wan_iface; do
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network_get_device DEVICE $ext_iface
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ipt6_add_del $1 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $2 $IPSET_EXCLUDE6 dst -j DNAT --to [::1]:$3
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done
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for lan in $OPENWRT_LAN; do
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network_get_device DEVICE $lan
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[ -n "$DEVICE" ] || continue
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dnat6_target $lan DNAT6
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[ "$DNAT6" != '-' ] && ipt6_add_del $1 PREROUTING -t nat -i $DEVICE -p tcp $2 $IPSET_EXCLUDE6 dst -j DNAT --to [$DNAT6]:$3
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done
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}
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fw_tpws_x $1 "$2" $3 6
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}
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fw_tpws()
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{
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# $1 - 1 - add, 0 - del
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# $2 - filter ipv4
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# $3 - filter ipv6
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# $4 - tpws port
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fw_tpws4 $1 "$2" $4
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fw_tpws6 $1 "$3" $4
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nft_fw_tpws4()
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{
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_nft_fw_tpws4 "$1" $2 always_apply_wan_filter
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}
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nft_fw_tpws6()
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{
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local script ifaces DLAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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_nft_fw_tpws6 "$1" $2 "$DLAN" always_apply_wan_filter
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}
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nft_fw_nfqws_post4()
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{
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_nft_fw_nfqws_post4 "$1" $2 always_apply_wan_filter
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}
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nft_fw_nfqws_post6()
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{
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_nft_fw_nfqws_post6 "$1" $2 always_apply_wan_filter
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}
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@@ -384,13 +232,14 @@ flow_offloading_unexempt()
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}
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nft_fill_ifsets_overload()
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{
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local script ifaces DLAN DWAN DWAN6
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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network_find_wan_all ifaces
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network_find_wan4_all ifaces
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call_for_multiple_items network_get_device DWAN "$ifaces"
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network_find_wan6_all ifaces
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@@ -399,75 +248,12 @@ nft_fill_ifsets_overload()
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nft_fill_ifsets "$DLAN" "$DWAN" "$DWAN6"
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}
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nft_fw_tpws4()
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{
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# $1 - filter ipv4
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# $2 - tpws port
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[ "$DISABLE_IPV4" = "1" ] || {
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nft_add_rule dnat_output skuid != $WS_USER oifname @wanif meta l4proto tcp $1 ip daddr != @nozapret dnat ip to $TPWS_LOCALHOST4:$2
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nft_add_rule dnat_pre iifname @lanif meta l4proto tcp $1 ip daddr != @nozapret dnat ip to $TPWS_LOCALHOST4:$2
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prepare_route_localnet
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}
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}
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nft_fw_tpws6()
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{
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# $1 - filter ipv6
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# $2 - tpws port
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local lan DEVICE DNAT6
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[ "$DISABLE_IPV6" = "1" ] || {
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nft_add_rule dnat_output skuid != $WS_USER oifname @wanif6 meta l4proto tcp $1 ip6 daddr != @nozapret6 dnat ip6 to [::1]:$2
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for lan in $OPENWRT_LAN; do
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network_get_device DEVICE $lan
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[ -n "$DEVICE" ] || continue
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dnat6_target $lan DNAT6
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[ "$DNAT6" != '-' ] && nft_add_rule dnat_pre iifname $DEVICE meta l4proto tcp $1 ip6 daddr != @nozapret6 dnat ip6 to [$DNAT6]:$2
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done
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}
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}
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nft_fw_tpws()
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{
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# $1 - filter ipv4
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# $2 - filter ipv6
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# $3 - tpws port
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nft_fw_tpws4 "$1" $3
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nft_fw_tpws6 "$2" $3
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}
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nft_fw_nfqws_post4()
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{
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# $1 - filter ipv4
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# $2 - queue number
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local rule
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[ "$DISABLE_IPV4" = "1" ] || {
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rule="oifname @wanif meta l4proto tcp $1 ip daddr != @nozapret"
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nft_add_rule postrouting $rule queue num $2 bypass
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nft_add_nfqws_flow_exempt_rule "$rule"
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}
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}
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nft_fw_nfqws_post6()
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{
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# $1 - filter ipv6
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# $2 - queue number
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local rule
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[ "$DISABLE_IPV6" = "1" ] || {
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rule="oifname @wanif6 meta l4proto tcp $1 ip6 daddr != @nozapret6"
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nft_add_rule postrouting $rule queue num $2 bypass
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nft_add_nfqws_flow_exempt_rule "$rule"
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}
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}
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nft_fw_nfqws_post()
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{
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# $1 - filter ipv4
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# $2 - filter ipv6
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# $3 - queue number
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nft_fw_nfqws_post4 "$1" $3
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nft_fw_nfqws_post6 "$2" $3
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local DLAN
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call_for_multiple_items network_get_device DLAN "$OPENWRT_LAN"
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_nft_fw_tpws6 "$1" $2 "$DLAN"
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}
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