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ddns_cf
/
main.sh

# /bin/bash

path=$(cd "$(dirname $0)";pwd)	# 当前路径
zone_id='404fxxxxxxxxxxxxxxxxxxxxxxxxxxae1b'
api_key='UPvxxxxxxxxxxxxxxxxxxxxxxxxxxTeS-y'
main_doman='xxxxxxxxxx.top'
flag=0 # 解析记录成功则不变，失败则置为-1，控制是否更新本地 ipv6_prefix。

# 判断ip是否变化
if_ip_diff(){
# 读取本地记录ipv6前缀,存放在ipv6_prefix.ini
local old_ipv6_prefix=`cat $path/ipv6_prefix.ini`
# 读取当前实际ipv6前缀
export new_ipv6_prefix=`/usr/sbin/ip -6 addr|grep global|head -1|awk -F/ '{print $1}'|awk '{print $NF}'|awk -F: '{print $1":"$2":"$3":"$4}'`

echo "`date +"%Y年%m月%d日 %H时%M分"` 原ip为：$old_ipv6_prefix，新ip为：$new_ipv6_prefix" >> $path/logs/details.log
if [ $old_ipv6_prefix != $new_ipv6_prefix ];then
    #前缀有变动需要更新
	echo "`date +"%Y年%m月%d日 %H时%M分"` ip变动 原前缀为:$old_ipv6_prefix;新前缀为:$new_ipv6_prefix" | tee -a $path/logs/ddns.log $path/logs/details.log >/dev/null
	return 1
else
	echo "`date +"%Y年%m月%d日 %H时%M分"`;ip无变化" | tee -a $path/logs/ddns.log $path/logs/details.log
	echo "退出程序" | tee -a $path/logs/details.log
	return 0
fi
}

# 更新原有记录
Update_DNS_Record(){
local local_domain=$1
local local_ip=$2
local dns_id=$3
local proxied=$4
echo "`date +"%Y年%m月%d日 %H时%M分"` 发送更新dns请求" >> $path/logs/details.log
sleep 2
export dns_update_data=`curl -X PUT "https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${dns_id}" \
                -H "Authorization: Bearer ${api_key}" \
                -H "Content-Type: application/json" \
				--data '{
				"type":"AAAA",
				"name":"'"${local_domain}"'",
				"content":"'"${local_ip}"'",
				"ttl":600,
				"proxied":'"${proxied}"'
				}' -s `

if [ ` echo ${dns_update_data}| jq .success | tr 'A-Z' 'a-z' ` == 'true' ]; then
	echo "`date +"%Y年%m月%d日 %H时%M分"` 更新${local_domain}记录成功" | tee -a $path/logs/details.log $path/logs/ddns.log
	return 0
else
	flag=-1		# 设为-1，不更新本地ipv6前缀记录
	echo "更新dns记录失败，响应为：${dns_update_data}" >> $path/logs/details.log
	echo "`date +"%Y年%m月%d日 %H时%M分"` 更新${local_domain}记录失败" | tee -a $path/logs/ddns.log
	return 2
fi
}

# 创建新的dns解析记录
Create_DNS_Record(){
local local_domain=$1
local local_ip=$2
local proxied=$3
echo "发送创建新记录请求" >> $path/logs/details.log
sleep 2
export dns_create_data=`curl -X POST "https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records" \
                -H "Authorization: Bearer ${api_key}" \
                -H "Content-Type: application/json" \
				--data '{
				"type":"AAAA",
				"name":"'"${local_domain}"'",
				"content":"'"${local_ip}"'",
				"ttl":600,
				"proxied":'"${proxied}"'
				}' -s `

if [ ` echo ${dns_create_data}| jq .success | tr 'A-Z' 'a-z' ` == 'true' ]; then
	echo "`date +"%Y年%m月%d日 %H时%M分"` 创建新的${local_domain}记录成功" | tee -a $path/logs/details.log $path/logs/ddns.log
	return 0
else
	flag=-3	# 设为-3，不更新本地ipv6前缀记录
	echo "`date +"%Y年%m月%d日 %H时%M分"` 创建新的${local_domain}解析记录失败，响应为：${dns_create_data}" >> $path/logs/details.log
	echo "`date +"%Y年%m月%d日 %H时%M分"` 创建新的${local_domain}记录失败" | tee -a $path/logs/ddns.log
	return 2
fi
}

# 获取dns列表
get_dns_list(){
# 发送dns查询请求
#	- 存到变量中待用 --> dns_list_data
echo "`date +"%Y年%m月%d日 %H时%M分"`发送获取dns列表请求" >> $path/logs/details.log
sleep 2
export dns_list_data=`curl -X GET "https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records" \
                -H "Authorization: Bearer ${api_key}" \
                -H "Content-Type: application/json" -s`
echo "dns列表请求结束" >> $path/logs/details.log


if [ `echo ${dns_list_data}| jq .success | tr 'A-Z' 'a-z'` == 'true' ]; then
	echo "获取dns列表成功" >> $path/logs/details.log
	# 只取包含数据的部分 result 。
	export dns_list_data=`echo ${dns_list_data}| jq .result`
	# echo ${dns_list_data} > data.txt
	return 0
else
	flag=-2		# 设为-2，不更新本地ipv6前缀记录
	echo "`date +"%Y年%m月%d日 %H时%M分"` dns列表请求失败，响应为：$dns_list_data" >> $path/logs/details.log
	echo "程序结束,-2"  >> $path/logs/details.log
	exit -2
fi


}

# 主程序
main(){
# 循环读取每行数据
while IFS= read -r line
do
	# 跳过空行
    [[ $line =~ ^[[:space:]]*$ ]] && continue
    # 跳过以#开头的注释行
    [[ $line =~ ^\#.*$ ]] && continue

	# 截取=左边的部分，即域名
	local_domain=${line%=*}.${main_doman}
	local_ip=${new_ipv6_prefix}:$(echo $line | sed 's/.*=\(.*\)@.*/\1/')
	proxied=${line#*@}		# 是否代理，false/true
	echo "当前提交域名为：$local_domain" >> $path/logs/details.log
	echo "当前提交ip为：$local_ip" >> $path/logs/details.log
	echo "是否需要代理为：$proxied" >> $path/logs/details.log

	# 查询当前local_domain的dns_id，存在则输出dns_id，不存在输出空。
	dns_id=`echo $dns_list_data | jq -r ".[] | if .name == \"$local_domain\" then .id else empty  end"`
	echo "查询到的dns_id为：$dns_id" >> $path/logs/details.log
	if [ ! $dns_id ];then
		# 创建新的dns解析记录
		echo "创建新的dns解析记录" >> $path/logs/details.log
		Create_DNS_Record $local_domain $local_ip $proxied
	else
		# 判断内容是否有变化
		#############################################################################################################################
		# `echo $dns_list_data | jq -r ".[] | if .id == \"$dns_id\" then .content else empty end"`
		if [ $local_ip == `echo $dns_list_data | jq -r ".[] | if .id == \"$dns_id\" then .content else empty end"` ];then
			# ip没有变化，跳出
			echo "${local_domain}的配置没有改变，不更新" >> $path/logs/details.log
			continue
		else
			# 更新原有记录
			echo "更新原有记录"  >> $path/logs/details.log
			Update_DNS_Record $local_domain $local_ip $dns_id $proxied
		fi
	fi
done < $path/dns_data.ini
}


####################程序入口##################################

echo "`date +"%Y年%m月%d日 %H时%M分"` 程序开始执行###############################" >> $path/logs/details.log

options=$(getopt -o f -- "$@")

if [ $? -ne 0 ]; then
  echo "Usage: $(basename $0) [-f]
	-f: 强制更新
	不加选项：判断前缀是否更改，如果更改则更新"
  exit 1
fi

eval set -- "$options"

case "$1" in
  -f)
      echo "强制执行更新" | tee -a $path/logs/details.log
	  export new_ipv6_prefix=`/usr/sbin/ip -6 addr|grep global|head -1|awk -F/ '{print $1}'|awk '{print $NF}'|awk -F: '{print $1":"$2":"$3":"$4}'`
	  get_dns_list
	  main
	  # 更新前缀记录
	  if [ $flag -eq 0 ];then
		echo $new_ipv6_prefix > $path/ipv6_prefix.ini
	  fi
      shift
      ;;
  --)
      echo "正常执行"
	  if_ip_diff
	  if [ $? -eq 1 ];then
		# 获取dns列表
		get_dns_list
		main
		# 更新前缀记录
	    if [ $flag -eq 0 ];then
		  echo $new_ipv6_prefix > $path/ipv6_prefix.ini
	    fi
	  fi
	  shift
      ;;
esac
echo "`date +"%Y年%m月%d日 %H时%M分"` 程序退出###############################" >> $path/logs/details.log