阿里云函数计算DDNS

ddns.ros.sh

:global DDns do={
    :local DDnsDomain "$DDnsSubDomain.<your-domain>";
    :local DDnsApiURL "https://<account-id>.<region>.fc.aliyuncs.com/2016-08-15/proxy/<your-service>/<your-function>/<your-secert-key>";
    :local OldIP [/ip dns static get [find name="$DDnsDomain"] address];
    :local NewIPTemp [/ip address get [find interface="$DDnsInterface"] address];
    :local NewIP [:pick $NewIPTemp 0 ([:len $NewIPTemp]-3)];

    :if ($NewIP != $OldIP) do={
        :log info "interface $DDnsInterface ip address $OldIP changed to $NewIP";
        /ip dns static set [find name="$DDnsDomain"] address=$NewIP
        /tool fetch mode=https url="$DDnsApiURL/$DDnsSubDomain/$NewIP" keep-result=no
    }
}

:do {
    $DDns DDnsSubDomain="unicom-01"  DDnsInterface="pppoe-unicom-1"
} on-error={ :put "unicom-01 ddns setup failed" };
:do {
    $DDns DDnsSubDomain="unicom-02"  DDnsInterface="pppoe-unicom-2"
} on-error={ :put "unicom-02 ddns setup failed" };
:do {
    $DDns DDnsSubDomain="unicom-03"  DDnsInterface="pppoe-unicom-3"
} on-error={ :put "unicom-03 ddns setup failed" };
:do {
    $DDns DDnsSubDomain="unicom-04"  DDnsInterface="pppoe-unicom-4"
} on-error={ :put "unicom-04 ddns setup failed" };

fc.js

var Core = require('@alicloud/pop-core');

const client = new Core({
    accessKeyId: '<your-access-key-id>',
    accessKeySecret: '<your-access-key-secret>',
    endpoint: 'https://alidns.aliyuncs.com',
    apiVersion: '2015-01-09'
});

function apiCall(action, params) {
    return client.request(action, params, { method: 'POST' })
}

async function getRecordId(domain) {
    const { DomainRecords } = await apiCall('DescribeSubDomainRecords', {
        RegionId: "cn-hangzhou",
        SubDomain: domain
    })
    const Record = DomainRecords.Record.filter((r) => r.Status === 'ENABLE' && r.Type === 'A')[0]
    return Record && Record.RecordId
}

module.exports.handler = async function (req, resp) {
    const [secretKey, subDomain, clientIP] = req.path.split('/').filter(i => i);

    if (secretKey !== process.env.SECRET_KEY) return resp.send('ERROR');

    const RecordId = await getRecordId(subDomain + '.<your-domain>')

    const params = {
        RegionId: "cn-hangzhou",
        RecordId,
        DomainName: "<your-primary-domain>",
        RR: subDomain + '..<your-sub-domain>',
        Type: "A",
        Value: clientIP || req.clientIP
    };

    resp.send(JSON.stringify(await apiCall(RecordId ? 'UpdateDomainRecord' : 'AddDomainRecord', params)))
}