梅林路由器-阿里雲ddns-ipv6腳本（含socat轉發）

#!/bin/sh

# Author: tyasky

ak="eeeeeqqerewrwerewe"
sk="wwwwwwqqewrewrer2432r3qr43qq"
host="cx"
domain="rvwcom.cn"

runnum=10              # 最多嘗試更新次數
rungap=60              # 嘗試間隔秒數
type=AAAA              # 解析記錄類型
downvalue=""           # 解析值，留空則動態獲取


# 根據type選擇獲取ip的函數
if [ "$type" = "AAAA" ];then
    get_downvalue() {
       ip -6 addr|grep '64 scope global'|head -1|awk -F/ '{print $1}'|awk '{print $NF}'
       #ifconfig -a|grep inet6|grep 64|grep -v fe | awk '{print $3}' |cut -d "/" -f1
    }
else
    get_downvalue() {
        ip -4 addr|grep global\ ppp|head -1|awk -F/ '{print $1}'|awk '{print $2}'
    }
fi

# 第二個參數指定額外不編碼的字符
urlencode() {
    local string="${1}"
    local strlen=${#string}
    local encoded=""
    local pos c o
    for pos in $(awk "BEGIN { for ( i=0; i<$strlen; i++ ) { print i; } }")
    do
        c=${string:$pos:1}
        case $c in
            [-_.~a-zA-Z0-9$2] ) o="${c}" ;;
            * ) o=`printf '%%%02X' "'$c"`
        esac
        encoded="$encoded$o"
    done
    echo "${encoded}"
}

send_request() {
    timestamp=`date -u +"%Y-%m-%dT%H:%M:%SZ"`
    nonce=`openssl rand -base64 8 | md5sum | cut -c1-8`
    args="AccessKeyId=$ak&Format=json&SignatureMethod=HMAC-SHA1&SignatureNonce=$nonce&SignatureVersion=1.0&Timestamp=$timestamp&Version=2015-01-09&$1"
    args=`echo $args | sed 's/\&/\n/g' | LC_ALL=c sort | xargs | sed 's/ /\&/g'`
    CanonicalizedQueryString=$(urlencode $args "=&")
    StringToSign="GET&%2F&$(urlencode $CanonicalizedQueryString)"
    Signature=$(urlencode $(echo -n "$StringToSign" | openssl dgst -sha1 -hmac "$sk&" -binary | openssl base64))
    echo $(curl -k -s "https://alidns.aliyuncs.com/?$args&Signature=$Signature")
    echo $args
}

getValueFromJson() {
    local json="$1"
    local key="$2"
    echo $json | sed 's/":/：/g;s/"//g;s/,/\n/g' | grep $key | awk -F： '{ print $2 }'
}

DescribeSubDomainRecords() {
    send_request "Action=DescribeSubDomainRecords&SubDomain=$host.$domain"
}

UpdateDomainRecord() {
    local recordid=$(getValueFromJson `DescribeSubDomainRecords` "RecordId")
    send_request "Action=UpdateDomainRecord&RR=$host&RecordId=$recordid&Type=$type&Value=$downvalue"
}

AddDomainRecord() {
    send_request "Action=AddDomainRecord&DomainName=$domain&RR=$host&Type=$type&Value=$downvalue"
}

DeleteSubDomainRecords() {
    send_request "Action=DeleteSubDomainRecords&DomainName=$domain&RR=$host"
}

start_update(){
    while [ $runnum -gt 0 ]
    do
        runnum=$(expr $runnum - 1)
        datetime=$(date +%Y-%m-%d\ %T)
        echo 當前時間：$datetime

        rslt=`DescribeSubDomainRecords | grep TotalCount`
        if [ -z "$rslt" ];then
            echo "未獲取到阿里雲查詢結果"
            sleep $rungap
            continue
        fi
        upvalue=$(getValueFromJson "$rslt" "Value")
        echo 域名指向：$upvalue

        downvalue=${downvalue:=`get_downvalue`}
        if [ -z "$downvalue" ]; then
            echo "未獲取到本機地址"
            sleep $rungap
            continue
        fi
        echo 本機地址：$downvalue

        if [ "$upvalue" = "$downvalue" ]; then
            echo "處理結果：已正確解析，無需更新。"
        elif [ -n "$upvalue" ]; then
            echo "更新解析記錄..."
            UpdateDomainRecord
        else
            echo "添加解析記錄..."
            AddDomainRecord
        fi
        break
    done
}

runsocat() {
    echo "添加轉發記錄：[$downvalue]:$1 >> $2"
    start-stop-daemon --start --background --name S$1 --exec /usr/sbin/socat TCP6-LISTEN:$1,ipv6-v6only=1,reuseaddr,fork TCP4:$2
}

start_update
/sbin/ddns_custom_updated 1


#路由器web 18443
start-stop-daemon --start --background --name S18443 --exec /usr/sbin/socat TCP6-LISTEN:18443,ipv6-v6only=1,reuseaddr,fork TCP4:192.168.132.1:18443
#exsi 服務器 18543
start-stop-daemon --start --background --name S18543 --exec /usr/sbin/socat TCP6-LISTEN:18543,reuseaddr,fork TCP4:192.168.132.99:443
#阿里雲webdav 18680
start-stop-daemon --start --background --name S18680 --exec /usr/sbin/socat TCP6-LISTEN:18680,ipv6-v6only=1,reuseaddr,fork TCP4:192.168.132.1:18680
#路由器webdav 18780 
start-stop-daemon --start --background --name hacdias_webdav --exec /koolshare/hacdias/webdav -- -c /koolshare/hacdias/webdav.yaml