OpenWrt 增加 crontab 任务
在/root/crontab/ 目录下, 创建脚本 ddns.sh
#!/bin/sh # 远程php脚本的URL地址 SERVICE_URL=http://www.rockbb.com/my_ddns.php # 修改的目标记录 RECORD_NAME=homeop.rockbb.com # DNS类型, IPv6为AAAA RECORD_TYPE=AAAA # 这里改成自己的密文, 与远程的php脚本要一致, 用于校验md5 PRIVATE_KEY=helloworld # 抽取远程IP, 个人感觉grep正则比 cut -d更好用, 在我的timecloud上, cut -d ' ' 工作貌似不正常 if nslookup $RECORD_NAME|grep Address >/dev/null; then remote_ip=`nslookup $RECORD_NAME|grep -Eo 'Address\s+\d:\s+[0-9a-f:]+'|grep -Eo '[0-9a-f]+(:[0-9a-f:]+)+'` echo "Remote IP: "$remote_ip else exit 1 fi # 抽取本地IPv6地址 if ifconfig br-lan>/dev/null ; then local_ip=`ifconfig br-lan|grep 'inet6 addr:\s24.*'|grep -Eo '24[0-9a-f:]+'` echo "Local IP : "$local_ip else echo "Command: 'ifconfig br-lan' failed" exit 1; fi if [ $remote_ip != $local_ip ]; then # 得到当前的 时分秒, 用于计算MD5 local_ts="$(date +'%H%M%S')" md5=$(echo -n $PRIVATE_KEY$local_ts | md5sum -| cut -d' ' -f1) wget -q -O- "$SERVICE_URL?recordname=$RECORD_NAME&recordtype=$RECORD_TYPE&ts=$local_ts&s=$md5&content=$local_ip" else echo "Same IPs, skip unchanged" exit 0 fi 添加crontab任务
crontab -e # 内容 */10 * * * * /root/crontab/ddns.sh > /tmp/log/ddns.log 2>&1 .启动cron, 并确认有cron进程
root@Timecloud1:~# ps |grep cron 23791 root 1220 S /usr/sbin/crond -f -c /etc/crontabs -l 5 # 如果不存在则启动 /etc/init.d/cron start 处理请求的PHP脚本
安全起见, 处理前先校验md5
<?php # 代理号 $client = "agent9527"; # 在IP白名单管理处填写的密码, 不是代理登录密码, 用于计算checksum $password = 'yourpwd'; # 根域名 $name = 'rockbb.com'; # Private Key $private_key = 'helloworld'; # 要改DNS解析的域名记录 $recordname = $_GET['recordname']; # 要改DNS解析的域名记录类型 $type= $_GET['recordtype']; # 新解析值 $content = $_GET['content']; # TTL $ttl = 600; # 编码, E:英文, G:中文 $enc = 'E'; # 字符集编码 utf-8 或 gb2312 $charset = 'utf-8'; # 时间, 用于校验签名值 $ts = $_GET['ts']; # 签名值 $s = $_GET['s']; print_r($_GET);exit; # 校验签名 $dummy = md5($private_key . $ts); if ($dummy != $s) { echo 'Incorrect input: ' . $dummy; exit; } #### 获取旧值 #### $method = 'DomainDNSQuery'; $checksum = md5($method.$client.$password.$name); $api_url = 'http://api.xinnet.com/domain/api.gb?method=' . $method . '&charset=' . $charset; $parameters = '&enc='.$enc.'&client='.$client.'&checksum='.$checksum.'&name='.$name.'&type='.$type; #echo $api_url."\n"; echo $parameters."\n"; $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $api_url); curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $parameters); $data = curl_exec($curl); curl_close($curl); #echo $data."\n"; $data_array = explode('&',$data); $result = array(); foreach ($data_array as $data_item) { $data_pair = explode('=', $data_item); $result[$data_pair[0]] = $data_pair[1]; } print_r($result);exit; if ($result['ret'] != '100') { echo $data; exit; } $found = false; $original_content = ''; for ($i = 1; $i < 10; $i++) { // recordnamen 记录名, contentn 解析内容, ttln 生存时间, prion 优先级, reason 错误信息, domain-auth-Failed if (!array_key_exists('recordname'.$i, $result)) { echo 'No more results at index:'.$i."\n"; break; } if ($result['recordname'.$i] == $recordname) { echo "Record found at index:$i\n"; $found = true; $original_content = $result['content' . $i]; if ($original_content == $content) { echo "Values are the same, exit.\n"; exit; } else { break; } } } if (!$found) { echo "Record not found, exit\n"; exit; } $method = 'DomainDNSMod'; $checksum = md5($method.$client.$password.$name); echo $checksum . "\n"; $api_url = 'http://api.xinnet.com/domain/api.gb?method=' . $method . '&charset=' . $charset; $parameters = '&enc=' . $enc . '&client=' . $client . '&checksum=' . $checksum . '&name=' . $name . '&type=' . $type . '&recordname=' . $recordname . '&content=' . $content . '&oldcontent=' . $original_content . '&ttl=' . $ttl; echo $api_url."\n"; echo $parameters."\n"; $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $api_url); curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $parameters); $data = curl_exec($curl); curl_close($curl); echo $data."\n"; ?> 原文链接：https://blog.csdn.net/michaelchain/article/details/119628623?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522168449620216800225526048%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=168449620216800225526048&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~times_rank-12-119628623-null-null.blog_rank_default&utm_term=NAS%E3%80%81%E7%BE%A4%E6%99%96%E3%80%81%E9%98%BF%E9%87%8C%E4%BA%91%E3%80%81%E5%9F%9F%E5%90%8D%E8%A7%A3%E6%9E%90%E3%80%81%E5%86%85%E7%BD%91%E7%A9%BF%E9%80%8F%E3%80%81ipv6%E3%80%81ddns%E3%80%81%E8%BD%BB%E9%87%8F%E7%BA%A7%E4%BA%91%E6%9C%8D%E5%8A%A1%E5%99%A8%E3%80%81%E9%93%81%E5%A8%81%E9%A9%AC%E3%80%81%E5%A8%81%E8%81%94%E9%80%9A%E3%80%81DSM%E3%80%81DSM6.0%E3%80%81%E7%BE%A4%E6%99%96nas%E3%80%81%E4%BA%91%E6%9C%8D%E5%8A%A1%E5%99%A8%E3%80%81%E8%9C%97%E7%89%9B%E6%98%9F%E9%99%85%E3%80%81%E9%BB%91%E7%BE%A4%E6%99%96%E3%80%81docker%E3%80%81%E5%AE%B9%E5%99%A8%E9%95%9C%E5%83%8F%E3%80%81%E5%9F%9F%E5%90%8D%E6%B3%A8%E5%86%8C%E3%80%81%E5%AE%9D%E5%A1%94%E3%80%81%E5%8F%8D%E5%90%91%E4%BB%A3%E7%90%86%E3%80%81nginx%E3%80%81frp%E3%80%81%E5%8A%A8%E6%80%81%E5%9F%9F%E5%90%8D%E8%A7%A3%E6%9E%90
