mirror of
https://mirror.suhoan.cn/https://github.com/EasyTier/EasyTier.git
synced 2025-12-12 12:47:25 +08:00
8f37d4ef7c
* 增加magisk模块功能：热点局域网转发。该功能由后台监控，热点打开，可自动增加转发规则。在三星fold3测试通过。 * 增加了默认tun名称的识别 1.防止配置文件没有配置dev_name的情况，按默认名称tun+在网络设备中查找； 2.一旦热点关闭，自动删除规则。 * 考虑到主程序已可通过模块开关来重新加载，将操作按钮用于转发开关。此外对状态栏信息进行了一些修饰，加入了转发状态的显示。
91 lines
2.5 KiB
Bash
91 lines
2.5 KiB
Bash
#!/system/bin/sh
|
||
MODDIR=${0%/*}
|
||
CONFIG_FILE="${MODDIR}/config/config.toml"
|
||
LOG_FILE="${MODDIR}/log.log"
|
||
ACTION="$1" # 参数：add add_once del
|
||
|
||
|
||
# 获取接口/IP
|
||
get_et_iface() {
|
||
awk '
|
||
BEGIN { IGNORECASE = 1 }
|
||
/^[[:space:]]*dev_name[[:space:]]*=/ {
|
||
val = $0
|
||
sub(/^[^=]*=[[:space:]]*/, "", val)
|
||
gsub(/[" \t]/, "", val)
|
||
print val
|
||
exit
|
||
}
|
||
' "$CONFIG_FILE"
|
||
}
|
||
get_tun_iface() {
|
||
ip link | awk -F': ' '/ tun[[:alnum:]]+/ {print $2; exit}'
|
||
}
|
||
get_hot_iface() {
|
||
ip link | awk -F': ' '/(^| )(swlan[[:alnum:]_]*|softap[[:alnum:]_]*|ap[[:alnum:]_]*)\:/ {print $2; exit}' | cut -d'@' -f1 | head -n1
|
||
}
|
||
get_hot_cidr() {
|
||
ip -4 addr show dev "$1" | awk '/inet /{print $2; exit}'
|
||
}
|
||
|
||
|
||
set_nat_rules() {
|
||
ET_IFACE=$(get_et_iface)
|
||
[ -z "$ET_IFACE" ] && ET_IFACE="$(get_tun_iface)"
|
||
HOT_IFACE=$(get_hot_iface)
|
||
HOT_CIDR=$(get_hot_cidr "$HOT_IFACE")
|
||
|
||
# 如果热点关闭就删除自定义链
|
||
[ -n "$ET_IFACE" ] && [ -n "$HOT_CIDR" ] || return 1
|
||
|
||
# 创建自定义链（如不存在）
|
||
iptables -t nat -N ET_NAT 2>/dev/null
|
||
iptables -N ET_FWD 2>/dev/null
|
||
|
||
# 确保主链首条跳转到自定义链
|
||
iptables -t nat -C POSTROUTING -j ET_NAT 2>/dev/null || \
|
||
iptables -t nat -I POSTROUTING 1 -j ET_NAT
|
||
iptables -C FORWARD -j ET_FWD 2>/dev/null || \
|
||
iptables -I FORWARD 1 -j ET_FWD
|
||
|
||
# 添加规则
|
||
iptables -t nat -A ET_NAT -s "$HOT_CIDR" -o "$ET_IFACE" -j MASQUERADE
|
||
iptables -A ET_FWD -i "$HOT_IFACE" -o "$ET_IFACE" \
|
||
-m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
|
||
iptables -A ET_FWD -i "$ET_IFACE" -o "$HOT_IFACE" \
|
||
-m state --state ESTABLISHED,RELATED -j ACCEPT
|
||
|
||
echo "[ET-NAT] Rules applied: $HOT_IFACE $HOT_CIDR ↔ $ET_IFACE" >> "$LOG_FILE"
|
||
}
|
||
|
||
flush_rules() {
|
||
iptables -t nat -F ET_NAT 2>/dev/null
|
||
iptables -F ET_FWD 2>/dev/null
|
||
echo "[ET-NAT] Custom chains flushed." >> "$LOG_FILE"
|
||
}
|
||
|
||
case "$ACTION" in
|
||
add)
|
||
set_nat_rules
|
||
echo "[ET-NAT] Guard started." >> "$LOG_FILE"
|
||
ip monitor link addr | while read -r _; do
|
||
if [ -f "${MODDIR}/enable_IP_rule" ]; then
|
||
flush_rules
|
||
set_nat_rules
|
||
fi
|
||
done
|
||
;;
|
||
add_once)
|
||
flush_rules
|
||
set_nat_rules
|
||
echo "[ET-NAT] One-time rules applied." >> "$LOG_FILE"
|
||
;;
|
||
del)
|
||
flush_rules
|
||
;;
|
||
*)
|
||
echo "Usage: $0 [add|del]"
|
||
exit 1
|
||
;;
|
||
esac
|