ap/app/Script/scripts/defwan_set.sh

#!/bin/sh

path_sh=`nv get path_sh`
. $path_sh/global.sh
echo "Info: defwan_set.sh $1 start" >> $test_log
nd_dns=`nv get lan_ipaddr`
#linuxϵͳetcĿ¼¿É¶Áд£¬resolv.conf¿ÉÒÔÖ±½Ó·ÅÔÚetcÏ£¬Í¬²½uc´úÂëʱעÒâ²»Òª½«´Ë´¦Í¬²½
resolv_conf=/etc/resolv.conf
dnsmasq_conf=$path_conf/dnsmasq.conf

killall -9 dnsmasq
def_cid=`nv get default_cid`

if [ "-$1" == "-pswan" ]; then
    ipaddr_type=`nv get "pdp_act_type"$def_cid`
elif [ "-$1" == "-ethwan" ]; then
    ipaddr_type=`nv get eth_act_type`
elif [ "-$1" == "-wifiwan" ]; then
    ipaddr_type=`nv get wifi_act_type`
fi

#»ñȡĬÈÏÍø¿Ú
wan_if=$defwan_if
wan6_if=$defwan6_if

echo "" > $dnsmasq_conf

#Èç¹û±¾µØÓ¦ÓÃÐèҪʹÓÃdnsmasqµÄ¹¦ÄÜ£¬ÐèÒªÔÚ"/etc/resolv.conf" ÎļþÖÐÌí¼Ó "127.0.0.1"£¬±ØÐë·ÅÔÚµÚÒ»Ìõ
echo "" > $resolv_conf
echo nameserver 127.0.0.1 > $resolv_conf


#DNS¶ÔÓÚͬһÍø¿Ú£¬²»Çå³þ½«À´ÐèÇóÊÇ·ñÖ§³Ö·Ö±ð¶Ôv4¡¢v6½øÐÐauto¡¢manualÉèÖ㬴˴¦ÔÝʱ×ö³É¿É·Ö±ðÉèÖÃ
#ÉèÖÃIPv4 ȱʡ·ÓÉ DNS
if [ "-$ipaddr_type" == "-IPv4" -o "-$ipaddr_type" == "-IPv4v6" -o "-$ipaddr_type" == "-IPV4V6" -o "-$ipaddr_type" == "-" ];then
	#ÉèÖÃIPv4µÄĬÈÏÍø¹Ø
	route del default
	Flag=`route | grep -w "default"`
	if [ "-$Flag" != "-" ];then
	    echo "Error: route del default failed." >> $test_log
	fi

	defwan_gw=`nv get $wan_if"_gw"`
	if [ "-$defwan_gw" != "-" -o "-$defwan_rel" != "-" ];then
        route add default gw $defwan_gw dev $defwan_rel 2>>$test_log
	    if [ $? -ne 0 ];then
	        echo "Error: route add default gw $defwan_gw dev $defwan_rel failed." >> $test_log
	    fi
	fi
	
  

    
	#dnsmodeÓÉatserver´¦Àí£¬´«Êµ¼ÊʹÓõÄÖµ£¬´Ë´¦½öʹÓÃÒ»¸önv£¬²»Çø·Öauto manual
	dns_mode=`nv get $1"_dns_mode"`
	if [ "-$1" == "-pswan" -o "-$dns_mode" == "-auto" -o "-$dns_mode" == "-" ]; then
	        pridns=`nv get $wan_if"_pridns"`
		    secdns=`nv get $wan_if"_secdns"`
	elif [ "-$dns_mode" == "-manual" ]; then	
		pridns=`nv get $1"_pridns_manual"`
		secdns=`nv get $1"_secdns_manual"`
	fi
	
	if [ "-$pridns" == "-" -o "-$pridns" == "-0.0.0.0" ] && [ "-$secdns" == "-" -o "-$secdns" == "-0.0.0.0" ]; then
		pridns="114.114.114.114"
		secdns="8.8.8.8"
	fi
	
	if [ "-$pridns" != "-" -a "-$pridns" != "-0.0.0.0" ]; then
		echo nameserver $pridns > $dnsmasq_conf
	fi
	if [ "-$secdns" != "-" -a "-$secdns" != "-0.0.0.0" ]; then
		echo nameserver $secdns >> $dnsmasq_conf
	fi
		
	dns_extern=`nv get dns_extern`
	if [ -n "$dns_extern" ]; then
		echo nameserver $dns_extern >> $dnsmasq_conf
	fi
	if [ "-$1" == "-pswan" ]; then
		tc_tbf.sh up $def_cid
	fi
fi

#ÒÑÉèÖúÃÍâÍø¿ÚÔò¿ª×ª·¢
if [ "-$wan_if" != "-" ]; then
	echo 1 > /proc/sys/net/ipv4/ip_forward
fi

#ÉèÖÃIPv6 DNS
if [ "-$ipaddr_type" == "-IPv6" -o "-$ipaddr_type" == "-IPV6" -o "-$ipaddr_type" == "-IPv4v6" -o "-$ipaddr_type" == "-IPV4V6" ];then
	#dnsmodeÓÉatserver´¦Àí£¬´«Êµ¼ÊʹÓõÄÖµ£¬´Ë´¦½öʹÓÃÒ»¸önv£¬²»Çø·Öauto manual
	ipv6_dns_mode=`nv get $1"_ipv6_dns_mode"`
	if [ "-$1" == "-pswan" -o "-$ipv6_dns_mode" == "-auto" -o "-$ipv6_dns_mode" == "-" ]; then
	    ipv6_pridns=`nv get $wan6_if"_ipv6_pridns_auto"`
        ipv6_secdns=`nv get $wan6_if"_ipv6_secdns_auto"`
	elif [ "-$ipv6_dns_mode" == "-manual" ]; then	
            ipv6_pridns=`nv get $1"_ipv6_pridns_manual"`
            ipv6_secdns=`nv get $1"_ipv6_secdns_manual"`
	fi
    
    nv set $wan6_if"_radvd_ipv6_dns_servers"=$ipv6_pridns,$ipv6_secdns
	
    if [ -n "$ipv6_pridns" ] && [ "$ipv6_pridns" != "::" ] && [ "$ipv6_pridns" != "::0" ] && [ "$ipv6_pridns" != "0000:0000:0000:0000:0000:0000:0000:0000" ];then
        echo nameserver $ipv6_pridns >> $dnsmasq_conf
    fi
            
    if [ -n "$ipv6_secdns" ] && [ "$ipv6_secdns" != "::" ] && [ "$ipv6_secdns" != "::0" ] && [ "$ipv6_secdns" != "0000:0000:0000:0000:0000:0000:0000:0000" ];then
        echo nameserver $ipv6_secdns >> $dnsmasq_conf
    fi
		
	ipv6_dns_extern=`nv get ipv6_dns_extern`
	if [ -n "$ipv6_dns_extern" ]; then
		echo nameserver $ipv6_dns_extern >> $dnsmasq_conf
	fi	
    if [ "-$1" == "-pswan" ]; then
		tc_tbf.sh up $def_cid
	fi
fi

nv set $wan6_if"_radvd_ipv6_dns_servers"=$ipv6_pridns,$ipv6_secdns

#ÉèÖøøÒ³ÃæÏÔʾµ±Ç°ÍâÍøIPµØÖ·
#ÉèÖÃIPv4Ò³ÃæÏÔʾµØÖ·
if [ "-$ipaddr_type" == "-IPv4" -o "-$ipaddr_type" == "-IPV4" -o "-$ipaddr_type" == "-IPv4v6" -o "-$ipaddr_type" == "-IPV4V6" -o "-$ipaddr_type" == "-" ]; then
    wan4_ip=`nv get $wan_if"_ip"`
    nv set wan_ipaddr="$wan4_ip"
fi

#ÉèÖÃIPv6Ò³ÃæÏÔʾµØÖ·
if [ "-$ipaddr_type" == "-IPv6" -o "-$ipaddr_type" == "-IPV6" -o "-$ipaddr_type" == "-IPv4v6" -o "-$ipaddr_type" == "-IPV4V6" ]; then
    wan6_ip=`nv get $wan6_if"_ipv6_ip"`
    nv set ipv6_wan_ipaddr="$wan6_ip"
fi

dnsmasq -i $lan_if -r $dnsmasq_conf &

# ppp0ÐèÒªÉèÖÃMSS×Ϊ1440£¬·ñÔò¿ÉÄÜtcp²»Í¨
if [ "$defwan_rel" == "ppp0"  ]; then
    echo "Info: dns_set ppp0 set MSS 1440" >> $test_log
    iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1440
fi