群晖-阿里云ddns

该方法适用于任何可以执行 .sh 脚本的环境下

1. 首先需要一个阿里的域名
2. 需要有阿里的操作AccessKey,没有的可以在阿里云控制台申请
3. 下载文件 aliyun.sh (点击访问)
   或复制下面的代码保存为 aliyun.sh

   #!/bin/sh
   
   set -e
   
   if [ $1 ]; then
   	ApiId=$1
   fi
   
   if [ $2 ]; then
   	ApiKey=$2
   fi
   
   if [ $3 ]; then
   	Domain=$3
   fi
   
   if [ -z "$ApiId" -o -z "$ApiKey" -o -z "$Domain" ]; then
   	echo "参数缺失"
   	exit 1
   fi
   
   if [ $4 ]; then
   	SubDomain=$4
   fi
   
   if [ -z "$SubDomain" ]; then
   	SubDomain="@"
   fi
   
   Nonce=$(date -u "+%N")	# 有bug?
   Timestamp=$(date -u "+%Y-%m-%dT%H%%3A%M%%3A%SZ")	# SB 阿里云, 什么鬼时间格式
   Nonce=$Timestamp
   
   urlencode() {
   	local raw="$1";
   	local len="${#raw}"
   	local encoded=""
   
   	for i in `seq 1 $len`; do
   		local j=$((i+1))
   		local c=$(echo $raw | cut -c$i-$i)
   
   		case $c in [a-zA-Z0-9.~_-]) ;;
   			*)
   			c=$(printf '%%%02X' "'$c") ;;
   		esac
   
   		encoded="$encoded$c"
   	done
   
   	echo $encoded
   }
   
   # $1 = query string
   getSignature() {
   	local encodedQuery=$(urlencode $1)
   	local message="GET&%2F&$encodedQuery"
   	local sig=$(echo -n "$message" | openssl dgst -sha1 -hmac "$ApiKey&" -binary | openssl base64)
   	echo $(urlencode $sig)
   }
   
   sendRequest() {
   	local sig=$(getSignature $1)
   	local result=$(wget -qO- --no-check-certificate --content-on-error "https://alidns.aliyuncs.com?$1&Signature=$sig")
   	echo $result
   }
   
   getRecordId() {
   	echo "获取 $SubDomain.$Domain 的 IP..." >&2
   	local queryString="AccessKeyId=$ApiId&Action=DescribeSubDomainRecords&Format=JSON&SignatureMethod=HMAC-SHA1&SignatureNonce=$Nonce&SignatureVersion=1.0&SubDomain=$SubDomain.$Domain&Timestamp=$Timestamp&Type=A&Version=2015-01-09"
   	local result=$(sendRequest "$queryString")
   	local code=$(echo $result | sed 's/.*,"Code":"\([A-z]*\)",.*/\1/')
   	local recordId=$(echo $result | sed 's/.*,"RecordId":"\([0-9]*\)",.*/\1/')
   
   	if [ "$code" = "$result" ] && [ ! "$recordId" = "$result" ]; then
   		local ip=$(echo $result | sed 's/.*,"Value":"\([0-9\.]*\)",.*/\1/')
   
   		if [ "$ip" == "$NewIP" ]; then
   			echo "IP 无变化, 退出脚本..." >&2
   			echo "quit"
   		else
   			echo $recordId
   		fi
   	else
   		echo "null"
   	fi
   }
   
   # $1 = record ID, $2 = new IP
   updateRecord() {
   	local queryString="AccessKeyId=$ApiId&Action=UpdateDomainRecord&DomainName=$Domain&Format=JSON&RR=$SubDomain&RecordId=$1&SignatureMethod=HMAC-SHA1&SignatureNonce=$Nonce&SignatureVersion=1.0&Timestamp=$Timestamp&Type=A&Value=$2&Version=2015-01-09"
   	local result=$(sendRequest $queryString)
   	local code=$(echo $result | sed 's/.*,"Code":"\([A-z]*\)",.*/\1/')
   
   	if [ "$code" = "$result" ]; then
   		echo "$SubDomain.$Domain 已指向 $NewIP." >&2
   	else
   		echo "更新失败." >&2
   		echo $result >&2
   	fi
   }
   
   # $1 = new IP
   addRecord() {
   	local queryString="AccessKeyId=$ApiId&Action=AddDomainRecord&DomainName=$Domain&Format=JSON&RR=$SubDomain&SignatureMethod=HMAC-SHA1&SignatureNonce=$Nonce&SignatureVersion=1.0&Timestamp=$Timestamp&Type=A&Value=$1&Version=2015-01-09"
   	local result=$(sendRequest $queryString)
   	local code=$(echo $result | sed 's/.*,"Code":"\([A-z]*\)",.*/\1/')
   
   	if [ "$code" = "$result" ]; then
   		echo "$SubDomain.$Domain 已指向 $NewIP." >&2
   	else
   		echo "添加失败." >&2
   		echo $result >&2
   	fi
   }
   
   # Get new IP address
   echo "获取当前 IP..."
   NewIP=$(wget -qO- --no-check-certificate "http://members.3322.org/dyndns/getip")
   echo "当前 IP 为 $NewIP."
   
   # Get record ID of sub domain
   recordId=$(getRecordId)
   
   if [ ! "$recordId" = "quit" ]; then
   	if [ "$recordId" = "null" ]; then
   		echo "域名记录不存在, 添加 $SubDomain.$Domain 至 $NewIP..."
   		addRecord $NewIP
   	else
   		echo "域名记录已存在, 更新 $SubDomain.$Domain 至 $NewIP..."
   		updateRecord $recordId $NewIP
   	fi
   fi

4. 配置群晖内的计划任务

主要修改的是”用户定义脚本” 格式如下,多个域名每行一个
假设需要配置两个域名，一个是 www.domain.com,一个是cloud.domain.com
那么脚本内容就是

sh {绝对地址}aliyun.sh {AccessKeyId} {AccessKeySecret} domain.com www
sh {绝对地址}aliyun.sh {AccessKeyId} {AccessKeySecret} domain.com cloud

配置群晖计划任务
控制面板 》任务计划 》新增任务

设定好执行时间