133 lines
5.1 KiB
Bash
133 lines
5.1 KiB
Bash
#!/bin/bash
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set -euo pipefail
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# ----------------------------
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# Config
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# ----------------------------
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MIHOMO_UID="mihomo"
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REDIR_PORT="7892" # TCP Redirect
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TPROXY_PORT="7893" # UDP/TCP TProxy
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FW_MARK="0x1"
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ROUTE_TABLE="100"
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EXCLUDE_IFACES=("tun0")
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INCLUDE_IFACES=("wt0" "eth1" "eth2")
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# ----------------------------
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# Helpers
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# ----------------------------
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ipt() { iptables "$@"; }
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del_loop() {
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local table=$1
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local chain=$2
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shift 2
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local rule_args="$@"
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while iptables -t "$table" -C "$chain" $rule_args 2>/dev/null; do
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echo "Deleting from $table/$chain: $rule_args"
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iptables -t "$table" -D "$chain" $rule_args
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done
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}
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ensure_ip_rule() {
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while ip rule list | grep -q "fwmark ${FW_MARK} lookup ${ROUTE_TABLE}"; do
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ip rule del fwmark ${FW_MARK} lookup ${ROUTE_TABLE} || true
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done
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ip rule add fwmark ${FW_MARK} lookup ${ROUTE_TABLE}
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ip route replace local 0.0.0.0/0 dev lo table ${ROUTE_TABLE}
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}
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# ----------------------------
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# CLEANUP PHASE
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# ----------------------------
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echo "--- Cleaning up old rules (Robust Mode) ---"
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del_loop nat OUTPUT -p tcp -m comment --comment "MIHOMO-JUMP" -j MIHOMO_REDIR
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del_loop nat PREROUTING -i wt0 -p tcp -m comment --comment "MIHOMO-REDIRECT" -j REDIRECT --to-port "${REDIR_PORT}"
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del_loop mangle PREROUTING -i wt0 -m comment --comment "MIHOMO-JUMP" -j MIHOMO_TPROXY
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del_loop mangle OUTPUT -p tcp -m comment --comment "MIHOMO-MARK" -j MARK --set-mark "${FW_MARK}"
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del_loop mangle OUTPUT -p udp -m comment --comment "MIHOMO-MARK" -j MARK --set-mark "${FW_MARK}"
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for IFACE in "${EXCLUDE_IFACES[@]}"; do
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del_loop mangle OUTPUT -o "${IFACE}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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del_loop mangle PREROUTING -i "${IFACE}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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del_loop nat OUTPUT -o "${IFACE}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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done
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del_loop mangle OUTPUT -m owner --uid-owner "${MIHOMO_UID}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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del_loop nat OUTPUT -m owner --uid-owner "${MIHOMO_UID}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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ipt -t mangle -F MIHOMO_TPROXY 2>/dev/null || true
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ipt -t mangle -X MIHOMO_TPROXY 2>/dev/null || true
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ipt -t nat -F MIHOMO_REDIR 2>/dev/null || true
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ipt -t nat -X MIHOMO_REDIR 2>/dev/null || true
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echo "--- Cleanup finished. Applying new rules ---"
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# ----------------------------
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# NAT (REDIRECT) - TCP
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# ----------------------------
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ipt -t nat -N MIHOMO_REDIR
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# Exclusions for gateway's own traffic
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ipt -t nat -A MIHOMO_REDIR -d 192.168.0.0/16 -j RETURN
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ipt -t nat -A MIHOMO_REDIR -d 10.0.0.0/8 -j RETURN
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ipt -t nat -A MIHOMO_REDIR -d 172.16.0.0/12 -j RETURN
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ipt -t nat -A MIHOMO_REDIR -d 127.0.0.0/8 -j RETURN
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ipt -t nat -A MIHOMO_REDIR -p tcp -j REDIRECT --to-ports "${REDIR_PORT}"
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# Apply to OUTPUT (Local gateway traffic)
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for IFACE in "${EXCLUDE_IFACES[@]}"; do
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ipt -t nat -A OUTPUT -o "${IFACE}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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done
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ipt -t nat -A OUTPUT -m owner --uid-owner "${MIHOMO_UID}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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ipt -t nat -A OUTPUT -p tcp -m comment --comment "MIHOMO-JUMP" -j MIHOMO_REDIR
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# Apply to PREROUTING (wt0 Ingress) - Force Redir for NetBird (skips exclusions by design)
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for IFACE in "${INCLUDE_IFACES[@]}"; do
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if [ "$IFACE" = "wt0" ]; then
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# wt0 (Netbird) пропускает исключения локальных подсетей по твоему дизайну
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ipt -t nat -A PREROUTING -i "$IFACE" -p tcp -m comment --comment "MIHOMO-REDIRECT" -j REDIRECT --to-port "${REDIR_PORT}"
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else
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# LAN-трафик (eth1, eth2) должен прыгать в цепочку MIHOMO_REDIR для проверки исключений (192.168.x.x и т.д.)
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ipt -t nat -A PREROUTING -i "$IFACE" -p tcp -m comment --comment "MIHOMO-JUMP-$IFACE" -j MIHOMO_REDIR
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fi
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done
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# ----------------------------
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# MANGLE (TPROXY) - UDP
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# ----------------------------
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ensure_ip_rule
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ipt -t mangle -N MIHOMO_TPROXY
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# Local exclusions: apply ONLY if traffic is NOT coming from NetBird (wt0)
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ipt -t mangle -A MIHOMO_TPROXY ! -i wt0 -d 192.168.0.0/16 -j RETURN
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ipt -t mangle -A MIHOMO_TPROXY ! -i wt0 -d 10.0.0.0/8 -j RETURN
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ipt -t mangle -A MIHOMO_TPROXY ! -i wt0 -d 172.16.0.0/12 -j RETURN
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ipt -t mangle -A MIHOMO_TPROXY ! -i wt0 -d 127.0.0.0/8 -j RETURN
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# TProxy Targets (UDP only, TCP is handled by REDIRECT)
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ipt -t mangle -A MIHOMO_TPROXY -p udp -j TPROXY --on-port "${TPROXY_PORT}" --tproxy-mark "${FW_MARK}/${FW_MARK}"
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# Apply to OUTPUT (Local gateway traffic)
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for IFACE in "${EXCLUDE_IFACES[@]}"; do
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ipt -t mangle -A OUTPUT -o "${IFACE}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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done
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ipt -t mangle -A OUTPUT -m owner --uid-owner "${MIHOMO_UID}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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# Mark local UDP packets
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ipt -t mangle -A OUTPUT -p udp -m comment --comment "MIHOMO-MARK" -j MARK --set-mark "${FW_MARK}"
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# Apply to PREROUTING (wt0 Ingress)
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for IFACE in "${EXCLUDE_IFACES[@]}"; do
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ipt -t mangle -A PREROUTING -i "${IFACE}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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done
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for IFACE in "${INCLUDE_IFACES[@]}"; do
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ipt -t mangle -A PREROUTING -i "$IFACE" -m comment --comment "MIHOMO-JUMP-$IFACE" -j MIHOMO_TPROXY
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done
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echo "Done. Suboptimal hypervisor constraints bypassed successfully." |