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openmptcprouter-feeds/openmptcprouter/files/etc/firewall.gre-tunnel
Ycarus (Yannick Chabanois) 13b4d20763 Fix log error on gre tunnel fw
2023-06-30 12:50:43 +02:00

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#!/bin/sh
. /lib/functions.sh
if [ -f /usr/sbin/iptables-legacy ]; then
IPTABLESSAVE="/usr/sbin/iptables-legacy-save"
IPTABLESRESTORE="/usr/sbin/iptables-legacy-restore"
else
IPTABLESSAVE="/usr/sbin/iptables-save"
IPTABLESRESTORE="/usr/sbin/iptables-restore --noflush"
fi
_setup_rules() {
config_get lookup $1 lookup
[ -n "$lookup" ] && [ -z "$(ip rule list fwmark 0x${lookup})" ] && {
ip rule add fwmark 0x${lookup} table ${lookup} pref 2
}
}
_setup_routes() {
config_get lookup $1 lookup
config_get gateway $1 gateway
intf=$(ifstatus $1 | jsonfilter -e '@.l3_device' | tr -d "\n")
[ -n "$intf" ] && intf=$(ifstatus "$1" | jsonfilter -q -e '@["device"]' | tr -d "\n")
if [ -n "$lookup" ] && [ -n "$intf" ] && [ -n "$gateway" ]; then
ip route replace default via $gateway dev $intf table $lookup
fi
}
config_load network
config_foreach _setup_rules interface
config_foreach _setup_routes interface
_setup_fw() {
config_get src_ips_forward $1 src_ips_forward
config_get redir_tcp $1 redir_tcp
config_get ifnames $1 ifnames
lookup="$(uci -q get network.${redir_tcp}.lookup)"
rule=""
[ -n "$src_ips_forward" ] && rule="$rule -s $(echo "${src_ips_forward}" | sed 's/ /,/g')"
[ -n "$ifnames" ] && rule="$rule -i $(echo "${ifnames}" | sed 's/ /-i /g')"
if [ -n "$rule" ] && [ -n "$lookup" ]; then
$IPTABLESAVE --counters | grep -v "0x${lookup}" | $IPTABLERESTORE -w --counters
$IPTABLERESTORE <<-EOF
*mangle
-A omr-gre-tunnel ${rule} -j MARK --set-mark 0x${lookup}
COMMIT
EOF
fi
}
if [ -z "$($IPTABLESAVE | grep omr-gre-tunnel)" ]; then
$IPTABLERESTORE <<-EOF
*mangle
:omr-gre-tunnel -
-I PREROUTING 1 -m addrtype ! --dst-type LOCAL -j omr-gre-tunnel
COMMIT
EOF
fi
config_load shadowsocks-libev
config_foreach _setup_fw ss_rules