#!/bin/sh /etc/rc.common
# Copyright (c) 2019 vernesong

START=99
STOP=15


CLASH="/etc/openclash/clash"
CLASH_CONFIG="/etc/openclash"
CRON_FILE="/etc/crontabs/root"
CONFIG_FILE="/etc/openclash/config.yaml"
LOG_FILE="/tmp/openclash.log"
START_LOG="/tmp/openclash_start.log"
BACKUP_FILE="/etc/openclash/config.bak"
START_BACKUP="/tmp/config.sbak"
CHANGE_FILE="/tmp/yaml_change.yaml"
RULE_FILE="/tmp/yaml_rules.yaml"
DNS_FILE="/tmp/yaml_dns.yaml"
PROXY_FILE="/tmp/yaml_proxy.yaml"
HOSTS_FILE="/etc/config/openclash_custom_hosts.list"

add_cron()
{
  [ -z "$(grep "openclash.sh" "$CRON_FILE" 2>/dev/null)" ] && {
     [ "$(uci get openclash.config.auto_update 2>/dev/null)" -eq 1 ] && echo "0 $(uci get openclash.config.auto_update_time 2>/dev/null) * * $(uci get openclash.config.config_update_week_time 2>/dev/null) /usr/share/openclash/openclash.sh" >> $CRON_FILE
  }
  [ -z "$(grep "openclash_rule.sh" "$CRON_FILE" 2>/dev/null)" ] && {
  [ "$(uci get openclash.config.other_rule_auto_update 2>/dev/null)" -eq 1 ] && echo "0 $(uci get openclash.config.other_rule_update_day_time 2>/dev/null) * * $(uci get openclash.config.other_rule_update_week_time 2>/dev/null) /usr/share/openclash/openclash_rule.sh" >> $CRON_FILE
  }
  [ -z "$(grep "openclash_ipdb.sh" "$CRON_FILE" 2>/dev/null)" ] && {
  [ "$(uci get openclash.config.geo_auto_update 2>/dev/null)" -eq 1 ] && echo "0 $(uci get openclash.config.geo_update_day_time 2>/dev/null) * * $(uci get openclash.config.geo_update_week_time 2>/dev/null) /usr/share/openclash/openclash_ipdb.sh" >> $CRON_FILE
  }
  crontab $CRON_FILE
  nohup /usr/share/openclash/openclash_watchdog.sh &
}

del_cron()
{
   sed -i '/openclash.sh/d' $CRON_FILE 2>/dev/null
   sed -i '/openclash_rule.sh/d' $CRON_FILE 2>/dev/null
   sed -i '/openclash_ipdb.sh/d' $CRON_FILE 2>/dev/null
   /etc/init.d/cron restart
}

change_dns() {
   if [ "$1" -ne "0" ]; then
      uci del dhcp.@dnsmasq[-1].server >/dev/null 2>&1
      uci add_list dhcp.@dnsmasq[0].server=127.0.0.1#"$dns_port"
      uci delete dhcp.@dnsmasq[0].resolvfile
      uci set dhcp.@dnsmasq[0].noresolv=1
      uci set openclash.config.redirect_dns=1
   else
      uci delete openclash.config.redirect_dns
   fi
   if [ "$2" -eq "1" ]; then
      uci set dhcp.@dnsmasq[0].cachesize=0
      uci set openclash.config.masq_cache=1
   else
      uci delete openclash.config.masq_cache
   fi
   uci commit dhcp
   uci commit openclash
}

revert_dns() {
   uci del_list dhcp.@dnsmasq[0].server=127.0.0.1#"$3" >/dev/null 2>&1
   [ "$1" = "1" ] && {
      uci set dhcp.@dnsmasq[0].resolvfile=/tmp/resolv.conf.auto
      uci set dhcp.@dnsmasq[0].noresolv=0
   }
   [ "$2" = "1" ] && {
      uci delete dhcp.@dnsmasq[0].cachesize
   }
   uci commit dhcp
   rm -rf /tmp/dnsmasq.d/dnsmasq_openclash.conf >/dev/null 2>&1
}

fake_block() {
   if [ "$1" = "fake-ip" ]; then
      if [ ! -f /etc/openclash/dnsmasq_fake_block.conf ]; then
         /usr/share/openclash/openclash_fake_block.sh
      elif [ "$(awk -F '/' '{print $3}' /etc/openclash/dnsmasq_fake_block.conf |head -1)" != "114.114.114.114" ] && [ -z "$2" ]; then
         /usr/share/openclash/openclash_fake_block.sh
      elif [ "$(awk -F '/' '{print $3}' /etc/openclash/dnsmasq_fake_block.conf |head -1)" != "$2" ] && [ ! -z "$2" ]; then
         /usr/share/openclash/openclash_fake_block.sh
      elif [ ! -z "$(grep "config servers" /etc/config/openclash)" ] && [ -z "$(grep -F '#Server Nodes' /etc/openclash/dnsmasq_fake_block.conf)" ]; then
         /usr/share/openclash/openclash_fake_block.sh
      fi
      mkdir -p /tmp/dnsmasq.d
      ln -s /etc/openclash/dnsmasq_fake_block.conf /tmp/dnsmasq.d/dnsmasq_openclash.conf
   fi
}

yml_check()
{
   #创建启动备份
   cp "$3" "$5"
	 
   #创建原始备份
   if [ ! -f "$4" ]; then
      cp "$3" "$4"
   fi
   
   #替换tab
   sed -i 's/\t/ /g' "$3" 2>/dev/null

   #自定义DNS还原
   if [ "$(grep -c '##Custom DNS##' "$3")" -gt 0 ] && [ "$2" = 0 ] && [ -f "$4" ]; then
      awk '/^ {0,}nameserver:/,/Proxy:/{print}' "$4" | sed '/^Proxy:/d' >/tmp/bakdns.config 2>/dev/null
      sed -i '/OpenClash-General-Settings/i\Custom DNS End' "$3" 2>/dev/null
      sed -i '/^ \{0,\}nameserver:/,/^Custom DNS End$/d' "$3" 2>/dev/null
      sed -i '/##Custom DNS##/r/tmp/bakdns.config' "$3" 2>/dev/null
      rm -rf /tmp/bakdns.config 2>/dev/null
   fi
   
   yml_dns_check
    
   #检查关键字避免后续操作出错
   
	 [ ! -z "$(grep "^ \{0,\}'Proxy':" "$3")" ] || [ ! -z "$(grep '^ \{0,\}"Proxy":' "$3")" ] && {
	    sed -i "/^ \{0,\}\'Proxy\'/c\Proxy:" "$3"
	    sed -i '/^ \{0,\}\"Proxy\":/c\Proxy:' "$3"
	 }
	 
	 [ ! -z "$(grep "^ \{0,\}'Proxy Group':" "$3")" ] || [ ! -z "$(grep '^ \{0,\}"Proxy Group":' "$3")" ] && {
	    sed -i "/^ \{0,\}\'Proxy Group\'/c\Proxy Group:" "$3"
	    sed -i '/^ \{0,\}\"Proxy Group\":/c\Proxy Group:' "$3"
	 }
	 
	 [ ! -z "$(grep "^ \{0,\}'Rule':" "$3")" ] || [ ! -z "$(grep '^ \{0,\}"Rule":' "$3")" ] && {
	    sed -i "/^ \{0,\}\'Rule\'/c\Rule:" "$3"
	    sed -i '/^ \{0,\}\"Rule\":/c\Rule:' "$3"
	 }
	 
	 [ ! -z "$(grep "^ \{0,\}'dns':" "$3")" ] || [ ! -z "$(grep '^ \{0,\}"dns":' "$3")" ] && {
	    sed -i "/^ \{0,\}\'dns\'/c\dns:" "$3"
	    sed -i '/^ \{0,\}\"dns\":/c\dns:' "$3"
	 }
	 
	 [ ! -z "$(grep "^ \{1,\}Proxy:" "$3")" ] && {
	    sed -i "/^ \{1,\}Proxy:/c\Proxy:" "$3"
	 }
	    
	 [ ! -z "$(grep "^ \{1,\}Proxy Group:" "$3")" ] && {
	    sed -i "/^ \{1,\}Proxy Group:/c\Proxy Group:" "$3"
	 }
	 
	 [ ! -z "$(grep "^ \{1,\}Rule:" "$3")" ] && {
	    sed -i "/^ \{1,\}Rule:/c\Rule:" "$3"
	 }
	 
	 [ ! -z "$(grep "^ \{1,\}dns:" "$3")" ] && {
	    	sed -i "/^ \{1,\}dns:/c\dns:" "$3"
	 }
	 
	 if [ ! -z "$(grep "^ \{1,\}port:" "$3")" ] || [ ! -z "$(grep "^ \{1,\}mode:" "$3")" ] || [ ! -z "$(grep "^ \{1,\}log-level:" "$3")" ]; then
	    cp "$3" /tmp/config.check 2>/dev/null
	    sed -i '/^dns:/,$d' /tmp/config.check 2>/dev/null
	    sed -i 's/^[ \t]*//' /tmp/config.check 2>/dev/null
	    sed -n '/^dns:/,$p' "$3" >> /tmp/config.check 2>/dev/null
	    mv /tmp/config.check "$3" 2>/dev/null
	 fi
	 
   #添加标识
   sed -i '/OpenClash-General/d' "$3" 2>/dev/null
   sed -i '/^Proxy:/i\#===================== OpenClash-General-Settings =====================#' "$3" 2>/dev/null
}

#检查DNS设置
yml_dns_check()
{

   [ -z "$(grep '^dns:' $CONFIG_FILE)" ] && {
      sed -i '/^Proxy:/i\dns:' "$CONFIG_FILE" 2>/dev/null
   }
   
   [ -z "$(grep '^ \{0,\}nameserver:' $CONFIG_FILE)" ] && {
      sed -i '/^Proxy:/i\  nameserver:' "$CONFIG_FILE" 2>/dev/null
      sed -i "/^ \{0,\}nameserver:/a\  - tls://8.8.8.8:853" "$CONFIG_FILE" 2>/dev/null
      sed -i "/^ \{0,\}nameserver:/a\  - 114.114.114.114" "$CONFIG_FILE" 2>/dev/null
   }

   dns_port=$(grep "^ \{0,\}listen:" $CONFIG_FILE |awk -F ':' '{print $3}' |awk -F '#' '{print $1}' |tr -cd "[0-9]" 2>/dev/null)
   if [ -z "$dns_port" ] || [ "$dns_port" -eq 53 ]; then
      dns_port=7874
   fi
  
   if [ ! -z "$(grep "^ \{0,\}listen:" "$CONFIG_FILE")" ]; then
      sed -i "/^ \{0,\}listen:/c\  listen: 0.0.0.0:${dns_port}" "$CONFIG_FILE" 2>/dev/null
   else
      sed -i "/^dns:/a\  listen: 0.0.0.0:${dns_port}" "$CONFIG_FILE" 2>/dev/null
   fi
   
   uci set openclash.config.dns_port="$dns_port" && uci commit openclash

}

#切割配置文件以分开处理
yml_cut()
{
    cp "$4" "$1"
    sed -i '/^Rule:/,$d' "$1"
    sed -n '/^ \{0,\}nameserver:/,$p' "$1" >"$3"
    sed -n '/^ \{0,\}Proxy:/,$p' "$3" >"$5"
    sed -i '/^ \{0,\}nameserver:/,$d' "$1"
    sed -i '/^ \{0,\}Proxy:/,$d' "$3"
    sed -n '/^Rule:/,$p' "$4" >"$2"

}

#获取自定义DNS设置
yml_dns_get()
{

   local section="$1"
   local dns_type=""
   local dns_address=""
   config_get_bool "enabled" "$section" "enabled" "1"
   config_get "port" "$section" "port" ""
   config_get "type" "$section" "type" ""
   config_get "ip" "$section" "ip" ""
   config_get "group" "$section" "group" ""

   if [ "$enabled" = "0" ]; then
      return
   fi
	
   if [ -z "$ip" ]; then
      return
   fi

   if [ "$type" = "tcp" ]; then
      dns_type="- tcp://"
   elif [ "$type" = "tls" ]; then
      dns_type="- tls://"
   elif [ "$type" = "udp" ]; then
      dns_type="- "
   elif [ "$type" = "https" ]; then
      dns_type="- https://"
   fi

   if [ ! -z "$port" ] && [ ! -z "$ip" ]; then
      dns_address="$ip:$port"
   elif [ -z "$port" ] && [ ! -z "$ip" ]; then
      dns_address="$ip"
   else
      return
   fi

   if [ ! -z "$group" ]; then
      if [ "$group" = "nameserver" ]; then
         echo "  $dns_type$dns_address" >>/etc/openclash/config.namedns
      else
         if [ -z "$(grep "fallback:$" /etc/openclash/config.falldns 2>/dev/null)" ]; then
            echo "  fallback:" >/etc/openclash/config.falldns
         fi
         echo "  $dns_type$dns_address" >>/etc/openclash/config.falldns
      fi
   else
      return
   fi

}

#添加自定义DNS设置
yml_dns_custom()
{
   if [ "$1" = 1 ]; then
      echo "  nameserver:" >/etc/openclash/config.namedns
      config_load "openclash"
      config_foreach yml_dns_get "dns_servers"
      sed -i '/^ \{0,\}nameserver:/i\##Custom DNS##' "$2" 2>/dev/null
      sed -i '/OpenClash-General-Settings/i\Custom DNS End' "$2" 2>/dev/null
      sed -i '/^ \{0,\}nameserver:/,/^Custom DNS End$/d' "$2" 2>/dev/null
      sed -i '/##Custom DNS##/r/etc/openclash/config.falldns' "$2" 2>/dev/null
      sed -i '/##Custom DNS##/r/etc/openclash/config.namedns' "$2" 2>/dev/null
      rm -rf /etc/openclash/config.namedns 2>/dev/null
      rm -rf /etc/openclash/config.falldns 2>/dev/null
   else
      sed -i "/^ \{0,\}nameserver:/c\  nameserver:" "$2" 2>/dev/null
      sed -i "/^ \{0,\}fallback:/c\  fallback:" "$2" 2>/dev/null
   fi

#fallback-filter
   if [ ! -z "$(grep '^ \{0,\}fallback:' $2)" ]; then
      if [ -z "$(grep '^ \{0,\}fallback-filter:' $2)" ]; then
         awk '/^ {0,}fallback:/,/OpenClash-General-Settings/{print}' "$2" |sed '1d' |sed '$d' >/tmp/fallback.cache 2>/dev/null
         sed -i '/fallback:/,$d' "$2" 2>/dev/null
         echo "  fallback:" >>"$2"
         sed -i '/  fallback:/a\      - 240.0.0.0/4' "$2" 2>/dev/null
         sed -i '/  fallback:/a\    ipcidr:' "$2" 2>/dev/null
         sed -i '/  fallback:/a\    geoip: true' "$2" 2>/dev/null
         sed -i '/  fallback:/a\  fallback-filter:' "$2" 2>/dev/null
         sed -i '/  fallback:/r/tmp/fallback.cache' "$2" 2>/dev/null
         rm -rf /tmp/fallback.cache 2>/dev/null
         echo "#===================== OpenClash-General-Settings =====================#" >>"$2"
      else
         if [ -z "$(grep '^  fallback-filter:' $2)" ]; then
            sed -i "/fallback-filter:/c\  fallback-filter:" "$2" 2>/dev/null
         fi
         if [ -z "$(grep '^    geoip: true' $2)" ]; then
            sed -i "/geoip: true/c\    geoip: true" "$2" 2>/dev/null
         fi
         if [ -z "$(grep '^    ipcidr:' $2)" ]; then
            sed -i "/ipcidr:/c\    ipcidr:" "$2" 2>/dev/null
         fi
      fi
      if [ -z "$(grep "^  - " $2)" ]; then
         sed -i '/^ \{0,\}nameserver:/,/^ \{0,\}fallback-filter:/ {s/^ \{0,\}- /  - /}' "$2" 2>/dev/null #修改参数空格
      fi
      if [ -z "$(grep "^      - " $2)" ]; then
         sed -i '/^ \{0,\}ipcidr:/,/OpenClash-General-Settings/ {s/^ \{0,\}- /      - /}' "$2" 2>/dev/null #修改参数空格
      fi
   else #删除fallback-filter
      if [ ! -z "$(grep '^ \{0,\}fallback-filter:' $2)" ]; then
         sed -i '/fallback-filter:/,$d' "$2" 2>/dev/null
         echo "#===================== OpenClash-General-Settings =====================#" >>"$2"
      fi
      if [ ! -z "$(grep "^ \{0,1\}- " $2)" ]; then
	       sed -i "s/^ \{0,\}- /  - /" "$2" 2>/dev/null #添加参数空格
      fi
   fi

}

#获取认证信息
yml_auth_get()
{
   local section="$1"
   config_get_bool "enabled" "$section" "enabled" "1"
   config_get "username" "$section" "username" ""
   config_get "password" "$section" "password" ""

   if [ "$enabled" = "0" ]; then
      return
   fi

   if [ -z "$username" ] || [ -z "$password" ]; then
      return
   else
      echo "  - $username:$password" >>/etc/openclash/config.auth
   fi
}

#添加认证信息
yml_auth_custom()
{
   if [ ! -z "$(grep "^authentication:" "$1")" ]; then
      sed -i '/^dns:/i\#authentication' "$1" 2>/dev/null
      sed -i '/^authentication:/,/^#authentication/d' "$1" 2>/dev/null
   fi
   [ -f /etc/openclash/config.auth ] && {
      sed -i '/^dns:/i\authentication:' "$1" 2>/dev/null
      sed -i '/^authentication:/r/etc/openclash/config.auth' "$1" 2>/dev/null
      rm -rf /etc/openclash/config.auth 2>/dev/null
   }
}

start()
{
#禁止多个实例
status=$(ps|grep -c /etc/init.d/openclash)
[ "$status" -gt "3" ] && exit 0

if [ ! -f "$CONFIG_FILE" ] && [ "$(ls -l /etc/openclash/config.yml 2>/dev/null |awk '{print int($5/1024)}')" -gt 0 ]; then
   mv "/etc/openclash/config.yml" "$CONFIG_FILE"
fi
if [ ! -f "$CONFIG_FILE" ] && [ -f "$BACKUP_FILE" ]; then
   cp $BACKUP_FILE $CONFIG_FILE
fi

enable=$(uci get openclash.config.enable 2>/dev/null)
LOGTIME=$(date "+%Y-%m-%d %H:%M:%S")
if [ "$enable" -eq 1 ] && [ -f "$CONFIG_FILE" ]; then
#检查是否存在核心文件
[ ! -f "$CLASH" ] && {
   echo "OpenClash 核心文件不存在，开始下载..." >$START_LOG
   nohup /usr/share/openclash/openclash_core.sh &
   exit 0
}
    echo "OpenClash 开始启动..." >$START_LOG
    echo "第一步: 获取配置..." >$START_LOG
    en_mode=$(uci get openclash.config.en_mode 2>/dev/null)
    enable_custom_dns=$(uci get openclash.config.enable_custom_dns 2>/dev/null)
    rule_source=$(uci get openclash.config.rule_source 2>/dev/null)
    enable_custom_clash_rules=$(uci get openclash.config.enable_custom_clash_rules 2>/dev/null) 
    da_password=$(uci get openclash.config.dashboard_password 2>/dev/null)
    cn_port=$(uci get openclash.config.cn_port 2>/dev/null)
    proxy_port=$(uci get openclash.config.proxy_port 2>/dev/null)
    ipv6_enable=$(uci get openclash.config.ipv6_enable 2>/dev/null)
    http_port=$(uci get openclash.config.http_port 2>/dev/null)
    socks_port=$(uci get openclash.config.socks_port 2>/dev/null)
    enable_redirect_dns=$(uci get openclash.config.enable_redirect_dns 2>/dev/null)
    lan_ip=$(uci get network.lan.ipaddr 2>/dev/null |awk -F '/' '{print $1}' 2>/dev/null)
    direct_dns=$(uci get openclash.config.direct_dns 2>/dev/null)
    disable_masq_cache=$(uci get openclash.config.disable_masq_cache 2>/dev/null)
    log_level=$(uci get openclash.config.log_level 2>/dev/null)
    proxy_mode=$(uci get openclash.config.proxy_mode 2>/dev/null)
    intranet_allowed=$(uci get openclash.config.intranet_allowed 2>/dev/null)
    echo "第二步: 配置文件检查..." >$START_LOG
    yml_check "$en_mode" "$enable_custom_dns" "$CONFIG_FILE" "$BACKUP_FILE" "$START_BACKUP"
    grep "^ \{0,\}Proxy:" $CONFIG_FILE >/dev/null 2>&1 && grep "^ \{0,\}Proxy Group:" $CONFIG_FILE >/dev/null 2>&1 && grep "^ \{0,\}Rule:" $CONFIG_FILE >/dev/null 2>&1
    if [ "$?" -ne "0" ]; then
       nohup $CLASH -d "$CLASH_CONFIG" >> $LOG_FILE 2>&1 &
       echo "错误: 配置文件完整性检查不通过，已自动还原配置文件，请根据日志信息对照模板格式检查修改配置文件！" >$START_LOG
       mv $START_BACKUP $CONFIG_FILE
       stop
       sleep 5
       echo "" >$START_LOG
    else
       echo "第三步: 修改配置文件..." >$START_LOG
       config_load "openclash"
       config_foreach yml_auth_get "authentication"
       yml_auth_custom "$CONFIG_FILE"
       yml_cut "$CHANGE_FILE" "$RULE_FILE" "$DNS_FILE" "$CONFIG_FILE" "$PROXY_FILE"
       yml_dns_custom "$enable_custom_dns" "$DNS_FILE"
       sh /usr/share/openclash/yml_change.sh "$LOGTIME" "$en_mode" "$enable_custom_dns" "$da_password" "$cn_port" "$proxy_port" "$CHANGE_FILE" "$ipv6_enable" "$http_port" "$socks_port" "$lan_ip" "$log_level" "$proxy_mode" "$intranet_allowed" &
       sh /usr/share/openclash/yml_rules_change.sh "$LOGTIME" "$rule_source" "$enable_custom_clash_rules" "$RULE_FILE" &
       wait
       cat "$CHANGE_FILE" "$DNS_FILE" "$PROXY_FILE" "$RULE_FILE" >$CONFIG_FILE 2>/dev/null
       rm -rf /tmp/yaml_* 2>/dev/null
       echo "第四步: DNS设置检查..." >$START_LOG
       if [ ! -z "$(sed -n '/^ \{0,\}nameserver:/{n;p}' $CONFIG_FILE |grep '^ \{0,\}fallback:')" ] || [ ! -z "$(sed -n '/^ \{0,\}nameserver:/{n;p}' $CONFIG_FILE |grep 'OpenClash-General')" ]; then
          echo "错误: 配置文件DNS选项下的Nameserver必须设置服务器，已自动还原配置文件，请重新设置！" >$START_LOG
          echo "${LOGTIME} Nameserver Must Be Set, Please Change Your Configrations In Config.yaml" >>$LOG_FILE
          mv $START_BACKUP $CONFIG_FILE
          sleep 10
          echo "" >$START_LOG
       else
          echo "第五步: 启动 Clash 主程序..." >$START_LOG
          nohup $CLASH -d "$CLASH_CONFIG" >> $LOG_FILE 2>&1 &

          echo "第六步: 设置控制面板..." >$START_LOG
          ln -s /usr/share/openclash/yacd /www/openclash 2>/dev/null
       
          echo "第七步: 设置 OpenClash 防火墙规则..." >$START_LOG
          if [ -z "$(uci get firewall.openclash 2>/dev/null)" ] || [ -z "$(uci get ucitrack.@openclash[-1].init 2>/dev/null)" ]; then
             uci delete ucitrack.@openclash[-1] >/dev/null 2>&1
             uci add ucitrack openclash >/dev/null 2>&1
             uci set ucitrack.@openclash[-1].init=openclash >/dev/null 2>&1
             uci commit ucitrack >/dev/null 2>&1
             uci delete firewall.openclash >/dev/null 2>&1
             uci set firewall.openclash=include >/dev/null 2>&1
             uci set firewall.openclash.type=script >/dev/null 2>&1
             uci set firewall.openclash.path=/var/etc/openclash.include >/dev/null 2>&1
             uci set firewall.openclash.reload=1 >/dev/null 2>&1
             uci commit firewall >/dev/null 2>&1
          fi

mkdir -p /var/etc
cat > "/var/etc/openclash.include" <<-EOF
/etc/init.d/openclash restart
EOF
          
          iptables -t nat -N openclash
          iptables -t nat -A openclash -d 0.0.0.0/8 -j RETURN
          iptables -t nat -A openclash -d 10.0.0.0/8 -j RETURN
          iptables -t nat -A openclash -d 127.0.0.0/8 -j RETURN
          iptables -t nat -A openclash -d 169.254.0.0/16 -j RETURN
          iptables -t nat -A openclash -d 172.16.0.0/12 -j RETURN
          iptables -t nat -A openclash -d 192.168.0.0/16 -j RETURN
          iptables -t nat -A openclash -d 224.0.0.0/4 -j RETURN
          iptables -t nat -A openclash -d 240.0.0.0/4 -j RETURN
          iptables -t nat -A openclash -p tcp -j REDIRECT --to-ports "$proxy_port"
          iptables -t nat -A PREROUTING -i br-lan -p tcp -j openclash
          iptables -t nat -A OUTPUT -p tcp -d 198.18.0.0/16 -j REDIRECT --to-ports "$proxy_port"

         if [ "$ipv6_enable" -eq 1 ]; then
            ip6tables -t nat -N openclash
            ip6tables -t nat -A openclash -p tcp -j REDIRECT --to-ports "$proxy_port"
            ip6tables -t nat -A PREROUTING -i br-lan -p tcp -j openclash
         fi
        
          echo "第八步: 重启 Dnsmasq 程序..." >$START_LOG
          if [ "$(iptables -t nat -nL PREROUTING --line-number |grep dpt:53 |wc -l)" -gt 2 ]; then
             echo "发现53端口被劫持，如连接异常请将OpenClash设置为劫持53端口程序的上游DNS服务器！" >$START_LOG
             echo "${LOGTIME} Warring: OpenClash May Can Not Take Over DNS, Please Use OpenClash for Upstream DNS Resolve Server" >> $LOG_FILE
             sleep 5
          fi
          change_dns "$enable_redirect_dns" "$disable_masq_cache"
          fake_block "$en_mode" "$direct_dns"
          /etc/init.d/dnsmasq restart >/dev/null 2>&1
          if pidof clash >/dev/null; then
             echo "第九步: 添加 OpenClash 计划任务,启动进程守护程序..." >$START_LOG
             add_cron
             if [ -z "$(uci get dhcp.lan.dhcpv6 2>/dev/null)" ]; then
                echo "OpenClash 启动成功，请等待服务器上线！" >$START_LOG
                echo "${LOGTIME} OpenClash Start Successful" >> $LOG_FILE
                sleep 5
             else
                echo "OpenClash 启动成功，检测到您启用了IPV6的DHCP服务，可能会造成连接异常！" >$START_LOG
                echo "${LOGTIME} OpenClash Start Successful, Please Note That Network May Abnormal With IPV6's DHCP Server" >> $LOG_FILE
                sleep 10
             fi
             echo "" >$START_LOG
          else
             if [ "$rule_source" != 0 ] || [ "$enable_custom_clash_rules" != 0 ]; then
                echo "错误: OpenClash 启动失败，尝试还原规则并重新启动 Clash 主程序..." >$START_LOG
                echo "${LOGTIME} OpenClash Can Not Start, Try Use Backup Rules Start Again" >> $LOG_FILE
                mv "$BACKUP_FILE" /etc/openclash/configrules.bak
                sed -i -n '/^Rule:/,$p' /etc/openclash/configrules.bak
                sed -i '/^Rule:/,$d' "$CONFIG_FILE"
                cat /etc/openclash/configrules.bak >> "$CONFIG_FILE"
                rm -rf /etc/openclash/configrules.bak
                nohup $CLASH -d "$CLASH_CONFIG" >> $LOG_FILE 2>&1 &
                sleep 3
                if pidof clash >/dev/null; then
                   add_cron
                   if [ -z "$(uci get dhcp.lan.dhcpv6 2>/dev/null)" ]; then
                      echo "OpenClash 使用备份规则启动成功，请更新、检查变动的规则后重试！" >$START_LOG
                      echo "${LOGTIME} OpenClash Start Successful With Backup Rules Config, Please Check Or Update Other Rules And Retry" >> $LOG_FILE
                      sleep 10
                   else
                      echo "OpenClash 使用备份规则启动成功，请更新、检查变动的规则后重试！" >$START_LOG
                      echo "${LOGTIME} OpenClash Start Successful With Backup Rules Config, Please Check Or Update Other Rules And Retry" >> $LOG_FILE
                      sleep 10
                      echo "OpenClash 启动成功，检测到您启用了IPV6的DHCP服务，可能会造成连接异常！" >$START_LOG
                      echo "${LOGTIME} OpenClash Start Successful, Please Note That Network May Abnormal With IPV6's DHCP Server" >> $LOG_FILE
                      sleep 10
                   fi
                   echo "" >$START_LOG
                else
                   echo "错误: OpenClash 启动失败，请到日志页面查看详细错误信息！" >$START_LOG
                   echo "${LOGTIME} OpenClash Can Not Start, Please Check The Error Info And Try Again" >> $LOG_FILE
                   sleep 10
                   echo "" >$START_LOG
                   stop && echo "" >$START_LOG
                fi
             else
                echo "错误: OpenClash 启动失败，请到日志页面查看详细错误信息！" >$START_LOG
                echo "${LOGTIME} OpenClash Can Not Start, Please Check The Error Info And Try Again" >> $LOG_FILE
                sleep 10
                echo "" >$START_LOG
                stop && echo "" >$START_LOG
             fi
          fi
       fi
    fi
    rm -rf $START_BACKUP 2>/dev/null
else
   subscribe_url=$(uci get openclash.config.subscribe_url 2>/dev/null)
   if [ ! -f "$CONFIG_FILE" ] && [ ! -z "$subscribe_url" ]; then
      echo "OpenClash 配置文件不存在，开始下载..." >$START_LOG
      nohup /usr/share/openclash/openclash.sh &
      exit 0
   elif [ ! -f "$CONFIG_FILE" ]; then
      echo "错误: OpenClash 缺少配置文件，请上传或更新配置文件！" >$START_LOG
      echo "${LOGTIME} Config Not Found" >> $LOG_FILE
      sleep 5
      echo "" >$START_LOG
   fi
fi
}

stop()
{
    #禁止多个实例
    status=$(ps|grep -c /etc/init.d/openclash)
    [ "$status" -gt "3" ] && exit 0

    echo "OpenClash 开始关闭..." >$START_LOG
    echo "第一步: 删除 OpenClash 防火墙规则..." >$START_LOG
    rm -rf /var/etc/openclash.include 2>/dev/null
#ipv4
    iptables -t nat -F openclash >/dev/null 2>&1

    nat_clashs=$(iptables -nvL PREROUTING -t nat |sed 1,2d |sed -n '/openclash/=' |sort -rn)
    for nat_clash in $nat_clashs; do
        iptables -t nat -D PREROUTING "$nat_clash" >/dev/null 2>&1
    done

    iptables -t nat -X openclash >/dev/null 2>&1
    
    out_lines=$(iptables -nvL OUTPUT -t nat |sed 1,2d |sed -n '/198.18.0.0\/16/=' 2>/dev/null |sort -rn)
    for out_line in $out_lines; do
        iptables -t nat -D OUTPUT "$out_line" >/dev/null 2>&1
    done

#ipv6
    ip6tables -t nat -F openclash >/dev/null 2>&1

    nat6_clashs=$(ip6tables -nvL PREROUTING -t nat 2>/dev/null | sed 1,2d | sed -n '/openclash/=' |sort -r)
    for nat6_clash in $nat6_clashs; do
        ip6tables -t nat -D PREROUTING "$nat6_clash" >/dev/null 2>&1
    done

    ip6tables -t nat -X openclash >/dev/null 2>&1
    
    echo "第二步: 关闭 OpenClash 守护程序..." >$START_LOG
    watchdog_pids=$(ps |grep openclash_watchdog.sh |grep -v grep |awk '{print $1}' 2>/dev/null)
    for watchdog_pid in $watchdog_pids; do
        kill -9 "$watchdog_pid" >/dev/null 2>&1
    done

    echo "第三步: 关闭 Clash 主程序..." >$START_LOG
    kill -9 "$(pidof clash|sed 's/$//g')" 2>/dev/null
    
    echo "第四步: 重启 Dnsmasq 程序..." >$START_LOG
    dns_port=$(uci get openclash.config.dns_port 2>/dev/null)
    redirect_dns=$(uci get openclash.config.redirect_dns 2>/dev/null)
    masq_cache=$(uci get openclash.config.masq_cache 2>/dev/null)
    revert_dns "$redirect_dns" "$masq_cache" "$dns_port"
    /etc/init.d/dnsmasq restart >/dev/null 2>&1

    echo "第五步：删除 OpenClash 残留文件..." >$START_LOG
    enable=$(uci get openclash.config.enable 2>/dev/null)
    if [ "$enable" -eq 0 ]; then
       rm -rf $LOG_FILE 2>/dev/null
       rm -rf /www/openclash 2>/dev/null
       rm -rf /tmp/openclash_last_version 2>/dev/null
       rm -rf /tmp/clash_last_version 2>/dev/null
       rm -rf /tmp/Proxy_Group 2>/dev/null
       echo "OpenClash 关闭成功！" >$START_LOG
       sleep 5
       rm -rf $START_LOG
    fi
    
    del_cron

    echo "OpenClash Already Stop"
}


restart()
{
  stop
  start
}
