148 lines
4.8 KiB
Bash
148 lines
4.8 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" # mihomo redir-port (NAT REDIRECT for TCP)
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TPROXY_PORT="7893" # mihomo tproxy-port (TPROXY for TCP/UDP)
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FW_MARK="0x1"
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ROUTE_TABLE="100"
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# Interfaces to EXCLUDE completely from interception
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EXCLUDE_IFACES=("tun0" "wg0")
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# ----------------------------
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# Helpers
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# ----------------------------
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ipt() { iptables "$@"; }
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# Функция для удаления правил по комментарию
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cleanup_rules() {
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local table="$1"
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local chain="$2"
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local comment="$3"
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# Добавлено "|| true" к grep, чтобы скрипт не падал, если правил нет (пустой grep возвращает 1)
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iptables -t "$table" -nL "$chain" --line-numbers 2>/dev/null | \
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grep "$comment" || true | \
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sort -r | \
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awk '{print $1}' | \
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while read -r line; do
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# Проверка на пустую строку, на случай если grep ничего не нашел
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if [[ -n "$line" ]]; then
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echo "Deleting rule $line from $table/$chain..."
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iptables -t "$table" -D "$chain" "$line"
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fi
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done
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}
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ensure_ip_rule() {
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# Clean up ip rules first
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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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# Route table entry, forced
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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..."
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# 1. Clean MANGLE references
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cleanup_rules mangle OUTPUT "MIHOMO-MARK"
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cleanup_rules mangle OUTPUT "MIHOMO-EXCLUDE"
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cleanup_rules mangle PREROUTING "MIHOMO-JUMP"
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cleanup_rules mangle PREROUTING "MIHOMO-EXCLUDE"
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# 2. Clean NAT references
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cleanup_rules nat OUTPUT "MIHOMO-JUMP"
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cleanup_rules nat OUTPUT "MIHOMO-EXCLUDE"
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cleanup_rules nat PREROUTING "MIHOMO-REDIRECT"
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# 3. Flush and Delete Chains
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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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# ----------------------------
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# NAT (REDIRECT) part (TCP only)
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# ----------------------------
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echo "Applying NAT rules..."
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ipt -t nat -N MIHOMO_REDIR
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# Exclude private networks
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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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# Everything else TCP -> REDIRECT
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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 Traffic) ---
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# Exclude traffic going via tunnels (tun0/wg0)
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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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# Exclude mihomo user
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ipt -t nat -A OUTPUT -m owner --uid-owner "${MIHOMO_UID}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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# Redirect remaining TCP
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ipt -t nat -A OUTPUT -p tcp -m comment --comment "MIHOMO-JUMP" -j MIHOMO_REDIR
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# --- APPLY TO INGRESS (wt0) ---
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ipt -t nat -A PREROUTING -i wt0 -p tcp -m comment --comment "MIHOMO-REDIRECT" -j REDIRECT --to-port "${REDIR_PORT}"
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# ----------------------------
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# MANGLE (TPROXY) part (TCP+UDP)
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# ----------------------------
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echo "Applying TPROXY rules..."
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ensure_ip_rule
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ipt -t mangle -N MIHOMO_TPROXY
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# Exclude private networks
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ipt -t mangle -A MIHOMO_TPROXY -d 192.168.0.0/16 -j RETURN
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ipt -t mangle -A MIHOMO_TPROXY -d 10.0.0.0/8 -j RETURN
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ipt -t mangle -A MIHOMO_TPROXY -d 172.16.0.0/12 -j RETURN
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ipt -t mangle -A MIHOMO_TPROXY -d 127.0.0.0/8 -j RETURN
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# TPROXY Target
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ipt -t mangle -A MIHOMO_TPROXY -p tcp -j TPROXY --on-port "${TPROXY_PORT}" --tproxy-mark "${FW_MARK}/${FW_MARK}"
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ipt -t mangle -A MIHOMO_TPROXY -p udp -j TPROXY --on-port "${TPROXY_PORT}" --tproxy-mark "${FW_MARK}/${FW_MARK}"
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# --- APPLY TO OUTPUT (Local Traffic) ---
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# Exclude tunnels
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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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# Exclude mihomo user
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ipt -t mangle -A OUTPUT -m owner --uid-owner "${MIHOMO_UID}" -m comment --comment "MIHOMO-EXCLUDE" -j RETURN
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# Mark remaining traffic for Policy Routing
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ipt -t mangle -A OUTPUT -p tcp -m comment --comment "MIHOMO-MARK" -j MARK --set-mark "${FW_MARK}"
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ipt -t mangle -A OUTPUT -p udp -m comment --comment "MIHOMO-MARK" -j MARK --set-mark "${FW_MARK}"
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# --- APPLY TO INGRESS (wt0) ---
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# Exclude tunnels (ingress logic)
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for IFACE in "${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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# Jump wt0 traffic to TPROXY chain
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ipt -t mangle -A PREROUTING -i wt0 -m comment --comment "MIHOMO-JUMP" -j MIHOMO_TPROXY
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echo "Done." |