125 lines
2.7 KiB
Bash
125 lines
2.7 KiB
Bash
#!/bin/sh /etc/rc.common
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# Copyright (C) 2018 Nick Peng (pymumu@gmail.com)
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START=90
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SERVICE_USE_PID=1
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SERVICE_WRITE_PID=1
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SERVICE_DAEMONIZE=1
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BASECONFIGFILE="/etc/smartdns/smartdns.conf"
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SMARTDNS_CONF="/var/etc/smartdns.conf"
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ADDRESS_CONF="/etc/smartdns/address.conf"
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SMARTDNS_CONF_TMP="${SMARTDNS_CONF}.tmp"
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set_iptable()
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{
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IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}'`"
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for IP in $IPS
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do
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iptables -t nat -A PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT >/dev/null 2>&1
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done
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}
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clear_iptable()
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{
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IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}'`"
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for IP in $IPS
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do
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iptables -t nat -D PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT >/dev/null 2>&1
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done
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}
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conf_append()
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{
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echo "$1 $2" >> $SMARTDNS_CONF_TMP
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}
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load_server()
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{
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local section="$1"
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config_get "port" "$section" "port" "53"
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config_get "type" "$section" "type" "udp"
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config_get "ip" "$section" "ip" ""
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if [ -z "$port" ] || [ -z "$ip" ] || [ -z "$type" ]; then
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return
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fi
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SERVER="server"
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if [ "$type" = "tcp" ]; then
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SERVER="server-tcp"
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fi
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if [ ! -z "`echo $ip | grep ":"`" ]; then
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if [ -z "`echo $ip | grep "\["`" ]; then
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ip="[$ip]"
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fi
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fi
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conf_append "$SERVER" "$ip:$port"
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}
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start_service() {
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local section="$1"
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args=""
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config_get "server_name" "$section" "server_name" ""
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if [ ! -z "$server_name" ]; then
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conf_append "server-name" "$server_name"
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fi
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config_get "port" "$section" "port" "5353"
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conf_append "bind" "[::]:$port"
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SMARTDNS_PORT="$port"
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mkdir -p $(dirname $SMARTDNS_CONF)
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config_get "cache_size" "$section" "cache_size" ""
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if [ ! -z "$cache_size" ]; then
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conf_append "cache-size" "$cache_size"
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fi
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config_get "rr_ttl" "$section" "rr_ttl" ""
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if [ ! -z "$rr_ttl" ]; then
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conf_append "rr-ttl" "$rr_ttl"
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fi
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config_get "rr_ttl_min" "$section" "rr_ttl_min" ""
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if [ ! -z "$rr_ttl_min" ]; then
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conf_append "rr-ttl-min" "$rr_ttl_min"
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fi
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config_get "rr_ttl_max" "$section" "rr_ttl_max" ""
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if [ ! -z "$rr_ttl_max" ]; then
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conf_append "rr-ttl-max" "$rr_ttl_max"
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fi
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clear_iptable
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config_get_bool "redirect" "$section" "redirect" '0'
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if [ "$redirect" -eq 1 ]; then
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set_iptable
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fi
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config_foreach load_server "server"
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echo "# address" >> $SMARTDNS_CONF_TMP
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grep "^ *address " $ADDRESS_CONF >> $SMARTDNS_CONF_TMP
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config_get_bool "enabled" "$section" "enabled" '0'
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mv $SMARTDNS_CONF_TMP $SMARTDNS_CONF
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[ "$enabled" -gt 0 ] || return 1
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service_start /usr/sbin/smartdns $args -c $SMARTDNS_CONF
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}
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start() {
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config_load "smartdns"
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config_foreach start_service "smartdns"
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}
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stop() {
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service_stop /usr/sbin/smartdns
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}
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