mirror of
https://github.com/bol-van/zapret.git
synced 2025-04-19 21:42:59 +03:00
252 lines
7.0 KiB
Plaintext
252 lines
7.0 KiB
Plaintext
. /lib/functions/network.sh
|
|
|
|
[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
|
|
. "$ZAPRET_BASE/config"
|
|
|
|
QNUM=200
|
|
TPPORT_HTTP=1188
|
|
TPPORT_HTTPS=1189
|
|
TPWS_USER=daemon
|
|
|
|
# max wait time for the link local ipv6 on the LAN interface
|
|
LINKLOCAL_WAIT_SEC=5
|
|
|
|
IPSET_CR=$ZAPRET_BASE/ipset/create_ipset.sh
|
|
|
|
exists()
|
|
{
|
|
which $1 >/dev/null 2>/dev/null
|
|
}
|
|
|
|
# can be multiple ipv6 outgoing interfaces
|
|
# uplink from isp, tunnelbroker, vpn, ...
|
|
# want them all. who knows what's the real one that blocks sites
|
|
# dont want any manual configuration - want to do it automatically
|
|
# standard network_find_wan[6] return only the first
|
|
# we use low level function from network.sh to avoid this limitation
|
|
# it can change theoretically and stop working
|
|
|
|
network_find_wan_all()
|
|
{
|
|
__network_ifstatus "$1" "" "[@.route[@.target='0.0.0.0' && !@.table]].interface" "" 10 2>/dev/null && return
|
|
network_find_wan $1
|
|
}
|
|
network_find_wan6_all()
|
|
{
|
|
__network_ifstatus "$1" "" "[@.route[@.target='::' && !@.table]].interface" "" 10 2>/dev/null && return
|
|
network_find_wan6 $1
|
|
}
|
|
|
|
ipt()
|
|
{
|
|
iptables -C "$@" 2>/dev/null || iptables -I "$@"
|
|
}
|
|
ipt6()
|
|
{
|
|
ip6tables -C "$@" 2>/dev/null || ip6tables -I "$@"
|
|
}
|
|
|
|
# there's no route_localnet for ipv6
|
|
# the best we can is to route to link local of the incoming interface
|
|
# OUTPUT - can DNAT to ::1
|
|
# PREROUTING - can't DNAT to ::1. can DNAT to link local of -i interface or to any global addr
|
|
# not a good idea to expose tpws to the world (bind to ::)
|
|
|
|
get_ipv6_linklocal()
|
|
{
|
|
# $1 - interface name. if empty - any interface
|
|
if exists ip ; then
|
|
local dev
|
|
[ -n "$1" ] && dev="dev $1"
|
|
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope link.*$/\1/;t;d' | head -n 1
|
|
else
|
|
ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Link.*$/\1/;t;d' | head -n 1
|
|
fi
|
|
}
|
|
get_ipv6_global()
|
|
{
|
|
# $1 - interface name. if empty - any interface
|
|
if exists ip ; then
|
|
local dev
|
|
[ -n "$1" ] && dev="dev $1"
|
|
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope global.*$/\1/;t;d' | head -n 1
|
|
else
|
|
ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Global.*$/\1/;t;d' | head -n 1
|
|
fi
|
|
}
|
|
|
|
dnat6_target()
|
|
{
|
|
# get target ip address for DNAT. prefer link locals
|
|
# tpws should be as inaccessible from outside as possible
|
|
# link local address can appear not immediately after ifup
|
|
|
|
# DNAT6_TARGET=- means attempt was made but address was not found (to avoid multiple re-attempts)
|
|
|
|
[ -n "$DNAT6_TARGET" ] || {
|
|
# no reason to query if its down
|
|
network_is_up lan || return
|
|
|
|
local DEVICE
|
|
network_get_device DEVICE lan
|
|
|
|
local ct=0
|
|
while
|
|
DNAT6_TARGET=$(get_ipv6_linklocal $DEVICE)
|
|
[ -n "$DNAT6_TARGET" ] && break
|
|
[ "$ct" -ge "$LINKLOCAL_WAIT_SEC" ] && break
|
|
echo waiting for the link local for another $(($LINKLOCAL_WAIT_SEC - $ct)) seconds ...
|
|
ct=$(($ct+1))
|
|
sleep 1
|
|
do :; done
|
|
|
|
[ -n "$DNAT6_TARGET" ] || {
|
|
echo no link local. getting global
|
|
DNAT6_TARGET=$(get_ipv6_global $DEVICE)
|
|
[ -n "$DNAT6_TARGET" ] || {
|
|
echo could not get any address
|
|
DNAT6_TARGET=-
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
fw_nfqws_pre()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - filter ipv6
|
|
# $3 - queue number
|
|
|
|
local DEVICE wan_iface
|
|
|
|
[ "$DISABLE_IPV4" = "1" ] || {
|
|
network_find_wan_all wan_iface
|
|
for ext_iface in $wan_iface; do
|
|
network_get_device DEVICE $ext_iface
|
|
ipt PREROUTING -t raw -i $DEVICE -p tcp $1 -j NFQUEUE --queue-num $3 --queue-bypass
|
|
done
|
|
}
|
|
[ "$DISABLE_IPV6" = "1" ] || {
|
|
network_find_wan6_all wan_iface
|
|
for ext_iface in $wan_iface; do
|
|
network_get_device DEVICE $ext_iface
|
|
ipt6 PREROUTING -t raw -i $DEVICE -p tcp $2 -j NFQUEUE --queue-num $3 --queue-bypass
|
|
done
|
|
}
|
|
}
|
|
fw_nfqws_post()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - filter ipv6
|
|
# $3 - queue number
|
|
|
|
local DEVICE wan_iface
|
|
|
|
[ "$DISABLE_IPV4" = "1" ] || {
|
|
network_find_wan_all wan_iface
|
|
for ext_iface in $wan_iface; do
|
|
network_get_device DEVICE $ext_iface
|
|
ipt POSTROUTING -t mangle -o $DEVICE -p tcp $1 -j NFQUEUE --queue-num $3 --queue-bypass
|
|
done
|
|
}
|
|
[ "$DISABLE_IPV6" = "1" ] || {
|
|
network_find_wan6_all wan_iface
|
|
for ext_iface in $wan_iface; do
|
|
network_get_device DEVICE $ext_iface
|
|
ipt6 POSTROUTING -t mangle -o $DEVICE -p tcp $2 -j NFQUEUE --queue-num $3 --queue-bypass
|
|
done
|
|
}
|
|
}
|
|
|
|
IPT_OWNER="-m owner ! --uid-owner $TPWS_USER"
|
|
fw_tpws()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - filter ipv6
|
|
# $3 - tpws port
|
|
|
|
local DEVICE wan_iface
|
|
|
|
[ "$DISABLE_IPV4" = "1" ] || {
|
|
network_find_wan_all wan_iface
|
|
for ext_iface in $wan_iface; do
|
|
network_get_device DEVICE $ext_iface
|
|
ipt OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $1 -j DNAT --to 127.0.0.1:$3
|
|
done
|
|
ipt prerouting_lan_rule -t nat -p tcp $1 -j DNAT --to 127.0.0.1:$3
|
|
network_get_device DEVICE lan
|
|
sysctl -qw net.ipv4.conf.$DEVICE.route_localnet=1
|
|
}
|
|
[ "$DISABLE_IPV6" = "1" ] || {
|
|
network_find_wan6_all wan_iface
|
|
for ext_iface in $wan_iface; do
|
|
network_get_device DEVICE $ext_iface
|
|
ipt6 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $2 -j DNAT --to [::1]:$3
|
|
done
|
|
network_get_device DEVICE lan
|
|
dnat6_target
|
|
[ "$DNAT6_TARGET" != "-" ] && ipt6 PREROUTING -t nat -i $DEVICE -p tcp $2 -j DNAT --to [$DNAT6_TARGET]:$3
|
|
}
|
|
}
|
|
|
|
|
|
create_ipset()
|
|
{
|
|
echo "Creating ipset"
|
|
"$IPSET_CR" "$@"
|
|
}
|
|
|
|
|
|
zapret_apply_firewall()
|
|
{
|
|
case "${MODE}" in
|
|
tpws_hostlist)
|
|
fw_tpws "--dport 80" "--dport 80" $TPPORT_HTTP
|
|
;;
|
|
tpws_ipset)
|
|
create_ipset no-update
|
|
fw_tpws "--dport 80 -m set --match-set zapret dst" "--dport 80 -m set --match-set zapret6 dst" $TPPORT_HTTP
|
|
;;
|
|
tpws_ipset_https)
|
|
create_ipset no-update
|
|
fw_tpws "--dport 80 -m set --match-set zapret dst" "--dport 80 -m set --match-set zapret6 dst" $TPPORT_HTTP
|
|
fw_tpws "--dport 443 -m set --match-set zapret dst" "--dport 443 -m set --match-set zapret6 dst" $TPPORT_HTTPS
|
|
;;
|
|
tpws_all)
|
|
fw_tpws "--dport 80" "--dport 80" $TPPORT_HTTP
|
|
;;
|
|
tpws_all_https)
|
|
fw_tpws "--dport 80" "--dport 80" $TPPORT_HTTP
|
|
fw_tpws "--dport 443" "--dport 443" $TPPORT_HTTPS
|
|
;;
|
|
nfqws_ipset)
|
|
create_ipset no-update
|
|
fw_nfqws_pre "--sport 80 -m set --match-set zapret src" "--sport 80 -m set --match-set zapret6 src" $QNUM
|
|
fw_nfqws_post "--dport 80 -m set --match-set zapret dst" "--dport 80 -m set --match-set zapret6 dst" $QNUM
|
|
;;
|
|
nfqws_ipset_https)
|
|
create_ipset no-update
|
|
fw_nfqws_pre "-m multiport --sports 80,443 -m set --match-set zapret src" "-m multiport --sports 80,443 -m set --match-set zapret6 src" $QNUM
|
|
fw_nfqws_post "--dport 80 -m set --match-set zapret dst" "--dport 80 -m set --match-set zapret6 dst" $QNUM
|
|
;;
|
|
nfqws_all)
|
|
fw_nfqws_pre "--sport 80" "--sport 80" $QNUM
|
|
fw_nfqws_post "--dport 80" "--dport 80" $QNUM
|
|
;;
|
|
nfqws_all_https)
|
|
fw_nfqws_pre "-m multiport --sports 80,443" "-m multiport --sports 80,443" $QNUM
|
|
fw_nfqws_post "--dport 80" "--dport 80" $QNUM
|
|
;;
|
|
ipset)
|
|
create_ipset no-update
|
|
;;
|
|
custom)
|
|
# PLACEHOLDER
|
|
echo !!! NEED ATTENTION !!!
|
|
echo Configure iptables for required actions
|
|
echo Study how other sections work
|
|
;;
|
|
esac
|
|
}
|