ddnspod.sh

#!/bin/sh
version="0.3.0"
source /koolshare/scripts/base.sh
eval `dbus export ddnspod`
alias echo_date='echo 【$(TZ=UTC-8 date -R +%Y年%m月%d日\ %X)】:'
# ====================================函数定义====================================
# 获得外网地址 nvram适用有动态ip4的（但可能受小猫影响得不到地址）。
# ip addr show可以得到本地wan口地址，大内网会得到一个没用的保留地址。
# curl适用nat的大内网，可以得到一个公网地址，但这是你的大内网出口，这个ddns也没意义
# 参数: record_type   区分ipv6 或 ipv4
arIpAdress() {
    local record_type=${1}
    if [ "${record_type}" == "A" ]; then
        #local inter=$(curl -s whatismyip.akamai.com)
        #local inter=$(nvram get wan0_realip_ip)
        local inter=$(ip addr show ppp0|grep 'global ppp0'| awk -F' ' '{print $2}')
        echo $inter
    else
        # 获得外网IPv6地址,一般ipv6没有nat 直接用本机的
        #echo "`ifconfig $(nvram get wan0_ifname_t) | awk '/Global/{print $3}' | awk -F/ '{print $1}' | awk 'NR==1'`"
        echo "`ip addr show br0 |grep "global"| awk -F/ '{print $1}' | awk -F' ' '{print $2}' | awk 'NR==2'`"
    fi
}

# 查询域名地址
# 参数: 待查询domain submain域名 record_type
arNslookup() {
    local domainID recordID recordIP record_type
    record_type=${3}
    # Get domain ID
    domainID=$(arApiPost "Domain.Info" "domain=${1}")
    domainID=$(echo $domainID | sed 's/.*{"id":"\([0-9]*\)".*/\1/')
    # Get Record ID
    recordID=$(arApiPost "Record.List" "domain_id=${domainID}&sub_domain=${2}&record_type=${record_type}")
    recordID=$(echo $recordID | sed 's/.*\[{"id":"\([0-9]*\)".*/\1/')
    # Last IP
    recordIP=$(arApiPost "Record.Info" "domain_id=${domainID}&record_id=${recordID}&record_type=${record_type}")
    recordIP=$(echo $recordIP | sed 's/.*,"value":"\([0-9a-f\.:]*\)".*/\1/')
    
    # Output IP
    case "$recordIP" in 
        [0-9a-f]*)
            echo $recordIP
            return 0
        ;;
        *)
            echo "Get Record Info Failed!"
            return 1
        ;;
    esac
}

# 读取接口数据
# 参数: 接口类型 待提交数据
arApiPost() {
    local agent="AnripDdns/5.07(mail@anrip.com)"
    #local inter="https://dnsapi.cn/${1:?'Info.Version'}"
    local inter="https://dnsapi.cn/${1}"
    local param="login_token=$ddnspod_config_token&format=json&${2}"
    wget --quiet --no-check-certificate --secure-protocol=TLSv1_2 --output-document=- --user-agent=$agent --post-data $param $inter
    #curl -X POST --silent --insecure --user-agent $agent --data $param $inter
}

# 更新记录信息
# 参数: 主域名 子域名 ip type
arDdnsUpdate() {
    local domainID recordID recordRS recordCD myIP errMsg record_type
    record_type=${4}
    # 获得域名ID
    domainID=$(arApiPost "Domain.Info" "domain=${1}")
	domainID=$(echo $domainID | sed 's/.*"id":"\([0-9]*\)".*/\1/')
    # 获得记录ID
    recordID=$(arApiPost "Record.List" "domain_id=${domainID}&sub_domain=${2}&record_type=${record_type}")
    recordID=$(echo $recordID | sed 's/.*\[{"id":"\([0-9]*\)".*/\1/')
    # 更新记录IP
    myIP=$3
    recordRS=$(arApiPost "Record.Ddns" "domain_id=${domainID}&record_id=${recordID}&sub_domain=${2}&record_type=${record_type}&value=${myIP}&record_line=默认")
    recordCD=$(echo $recordRS | sed 's/.*{"code":"\([0-9]*\)".*/\1/')
    # 输出记录IP
    if [ "$recordCD" == "1" ]; then
        echo $recordRS | sed 's/.*,"value":"\([0-9\.]*\)".*/\1/'
        dbus set ddnspod_run_status="`echo_date` ${2}更新成功，wan ip：${myIP}"
        writeIP $myIP $record_type

        local ip6=$(arIpAdress "AAAA")

        if [ ${isDual} == 1 ] && [ "${dualDomain}" != "" ]; then
            sleep 10
            isDual=0
            arDdnsUpdate ${mainDomain} ${dualDomain} $ip6 "AAAA"
        fi
        sleep 10
        if [ ${isFirst} == 1 ] && [ "${subDomain6}" != "" ]; then
            isFirst=0
            arDdnsUpdate ${mainDomain} ${subDomain6} $ip6 "AAAA"
        fi
        # 重启dnsmasq，清楚本机对域名解析的缓存，只对小猫做了判断
        local isClashEnable=`dbus get merlinclash_enable`
        if [ $isClashEnable -eq 1 ]; then
            /koolshare/scripts/clash_dnsmasqrestart.sh
        else
            service restart_dnsmasq
        fi
        return 1
    fi
    # 输出错误信息
    errMsg=$(echo $recordRS | sed 's/.*,"message":"\([^"]*\)".*/\1/')
    dbus set ddnspod_run_status="失败，错误代码：$errMsg"
    echo $errMsg
    
    if [ ${isDual} == 1 ] && [ "${dualDomain}" != "" ]; then
        sleep 10
        isDual=0
        arDdnsCheck ${mainDomain} ${dualDomain} "AAAA"
    fi
    sleep 10
    if [ ${isFirst} == 1 ] && [ "${subDomain6}" != "" ]; then
        isFirst=0
        arDdnsCheck ${mainDomain} ${subDomain6} "AAAA"
    fi
}

# 检查ip信息
# 参数: 主域名 子域名 record_type
arDdnsCheck() {
	local hostIP lastIP postRS record_type
    record_type=${3}
	hostIP=$(arIpAdress ${record_type})
	lastIP=$(arNslookup ${1} ${2} ${record_type})
	echo "hostIP: ${hostIP}"
	echo "lastIP: ${lastIP}"
	if [ "$lastIP" != "$hostIP" ]; then
		dbus set ddnspod_run_status="更新中。。。"
		postRS=$(arDdnsUpdate $1 $2 $hostIP $3)
		echo "postRS: ${postRS}"
		if [ $? -ne 1 ]; then
			dbus set ddnspod_run_status="wan ip：${hostIP} 更新失败，原因：${postRS}"
            
            if [ ${isDual} == 1 ] && [ "${dualDomain}" != "" ]; then
                sleep 10
                isDual=0
                arDdnsCheck ${mainDomain} ${dualDomain} "AAAA"
            fi
            sleep 10
            if [ ${isFirst} == 1 ] && [ "${subDomain6}" != "" ]; then
                isFirst=0
                arDdnsCheck ${mainDomain} ${subDomain6} "AAAA"
            fi
		    return 1
		fi
	else
		dbus set ddnspod_run_status="`echo_date` wan ip：${hostIP} 未改变，无需更新"
        writeIP $hostIP $record_type
        if [ ${isDual} == 1 ] && [ "${dualDomain}" != "" ]; then
            sleep 10
            isDual=0
            arDdnsCheck ${mainDomain} ${dualDomain} "AAAA"
        fi
        sleep 10
        if [ ${isFirst} == 1 ] && [ "${subDomain6}" != "" ]; then
            isFirst=0
            arDdnsCheck ${mainDomain} ${subDomain6} "AAAA"
        fi
	fi
	return 0
}

# 为避免服务器因访问过于频繁而限制，增加本地验证，不要手动将服务器的解析设置成一个不正确的地址！
checkLocal() {
    local lastIP4 lastIP6 hostIP4 hostIP6
    hostIP4=$(arIpAdress "A")
    hostIP6=$(arIpAdress "AAAA")
    lastIP4=`cat /tmp/ip4`
    lastIP6=`cat /tmp/ip6`
    if [ "$hostIP4" == "$lastIP4" ] && [ "$lastIP6" == "$hostIP6" ]; then
        return 1
    else
        return 0
    fi
}

# ip写入文件 参数: myip record_type
writeIP() {
    local myIP record_type
    myIP=$1
    record_type=$2
    if [ ${record_type} == "A" ]; then
        echo "${myIP}" > /tmp/ip4
    else
        echo "${myIP}" > /tmp/ip6
    fi
}

# 获取网页信息 isFirst是标记
parseDomain() {
    isFirst=1
    local _tmp=${ddnspod_delay_time}
    isDual=${_tmp}
	mainDomain=${ddnspod_config_domain}
	subDomain4=${ddnspod_config_old_pwd}
    subDomain6=${ddnspod_config_uname}
    dualDomain=""
    if [ $isDual == 1 ]; then
        dualDomain=$subDomain4
    fi
}

add_ddnspod_cru(){
    sed -i '/ddnspod/d' /var/spool/cron/crontabs/* >/dev/null 2>&1
    cru a ddnspod "*/$ddnspod_refresh_time * * * * /koolshare/scripts/ddnspod_config.sh update"
}

stop_ddnspod(){
    local ddnspodcru=$(cru l | grep "ddnspod")
	if [ ! -z "$ddnspodcru" ]; then
		cru d ddnspod
	fi
	sed -i '/ddnspod/d' /var/spool/cron/crontabs/* >/dev/null 2>&1
}

write_ddnspod_version(){
	dbus set ddnspod_version="$version"
}

# ====================================used by init or cru====================================
case $ACTION in
start)
	#此处为开机自启动设计
	if [ "$ddnspod_enable" == "1" ]  && [ "$ddnspod_auto_start" == "1" ];then
		logger "[软件中心]: 启动ddnspod！"
        #dbus set ddnspod_run_status=0
        touch /tmp/ip4
        touch /tmp/ip6
        parseDomain
        #add_ddnspod_cru
        sleep $ddnspod_delay_time
        arDdnsCheck ${mainDomain} ${subDomain4} "A" 
        sleep 10
        add_ddnspod_cru
	else
		logger "[软件中心]: ddnspod未设置开机启动，跳过！"
	fi
	;;
stop | kill )
	#此处卸载插件时关闭插件设计
	stop_ddnspod
	;;
update)
	#此处为定时脚本设计
	parseDomain
    sleep $ddnspod_delay_time
	arDdnsCheck ${mainDomain} ${subDomain4} "A"
	;;
restart)
    stop_ddnspod
    parseDomain
    add_ddnspod_cru
    sleep $ddnspod_delay_time
    checkLocal
    if [ $? -eq 1 ]; then
        dbus set ddnspod_run_status="`echo_date` wan ip4 & ip6 未改变，无需更新"
    else
        arDdnsCheck ${mainDomain} ${subDomain4} "A"
    fi
	write_ddnspod_version
	;;
*)
	echo "Usage: $0 (start|stop|restart|kill)"
	exit 1
	;;
esac