Object Storage Service:Use the SDK for Node.js to configure Referer-based hotlink protection to prevent unauthorized reference to OSS objects

Usage notes

• Before you configure hotlink protection, make sure that you familiarize yourself with this feature. For more information, see Hotlink protection.

• In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS from other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about OSS regions and endpoints, see Regions, endpoints and open ports.

• In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or Security Token Service (STS), see Initialization.

• To configure hotlink protection, you must have the oss:PutBucketReferer permission. To query hotlink protection configurations, you must have the oss:GetBucketReferer permission. For more information, see Attach a custom policy to a RAM user.

Configure hotlink protection for a bucket

The following code provides an example on how to configure hotlink protection for a bucket:

const OSS = require('ali-oss')

const client = new OSS({
  // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to oss-cn-hangzhou. 
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Specify the name of the bucket. 
  bucket: 'examplebucket'
});

async function putBucketReferer () {
  try {
  const result = await client.putBucketReferer(bucket, true, [
  'http://www.aliyun.com',
  'https://www.aliyun.com'
  ]);
  console.log(result);
  } catch (e) {
    console.log(e);
  }
 }

putBucketReferer();

Query the hotlink protection configurations of a bucket

The following code provides an example on how to query the hotlink protection configurations of a bucket:

const OSS = require('ali-oss')

const client = new OSS({
  // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to oss-cn-hangzhou. 
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run the sample code, make sure that you have configured environment variables OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET. 
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Specify the name of the bucket. 
  bucket: 'yourbucketname'
});

async function getBucketReferer () {
  try {
    const result = await client.getBucketReferer('bucket-name');
    console.log(result);
  } catch (e) {
    console.log(e);
  }
}

getBucketReferer();

Delete the hotlink protection configurations of a bucket

The following code provides an example on how to delete the hotlink protection configurations of a bucket:

const OSS = require('ali-oss')
const client = new OSS({
  // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to oss-cn-hangzhou. 
  region: 'yourregion',
  // Obtain access credentials from environment variables. Before you run the sample code, make sure that you have configured environment variables OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET. 
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Specify the name of the bucket. 
  bucket: 'yourbucketname'
});

async function deleteBucketReferer () {
  try {
    const result = await client.deleteBucketReferer('bucket-name');
    console.log(result);
  } catch (e) {
    console.log(e);
  }
}

deleteBucketReferer();

References

• For the complete sample code of hotlink protection, visit GitHub.

• For more information about the API operation that you can call to configure hotlink protection for a bucket, see PutBucketReferer.

• For more information about the API operation that you can call to query the hotlink protection configurations of a bucket, see GetBucketReferer.