@nos-sdk/nos-node-sdk/dest/exts/auth.js

NOS Node.js SDK实现了NOS对象操作接口，基于此SDK能方便快速地实现JavaScript应用程序来使用NOS的对象存储服务。

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const client_1 = require("../client");
const crypto_1 = require("crypto");
class NosClientAuthExt extends client_1.NosBaseClient {
    /**
     * 创建上传凭证，返回 Token 对象，里面有 `putPolicy` 和 `sign` 字段，前端可以通过此构建上传 Token
     * @param params
     */
    createToken(params) {
        const putPolicyObject = {
            Bucket: params.bucket || this.options.defaultBucket,
            Object: params.objectKey,
            Expires: Math.floor(params.expires / 1000),
            ObjectSizeMin: params.objectSizeMin,
            ObjectSizeMax: params.objectSizeMax,
            MimeLimit: params.mimeLimit,
            OverWrite: params.overwrite
        };
        if (putPolicyObject.MimeLimit && typeof putPolicyObject.MimeLimit !== 'string') {
            putPolicyObject.MimeLimit = putPolicyObject.MimeLimit.join(';');
        }
        const putPolicyString = JSON.stringify(putPolicyObject);
        const putPolicy = Buffer.from(putPolicyString, 'utf8').toString('base64');
        const ciper = crypto_1.createHmac('sha256', this.options.accessSecret);
        ciper.update(putPolicy, 'utf8');
        const sign = ciper.digest('base64');
        return {
            putPolicy,
            sign
        };
    }
    /**
     * 创建上传凭证字符串，对 `createToken` 的简单包装，直接返回 accessKey:sign:putPolicy 字符串
     * @param params
     */
    createTokenString(params) {
        const { putPolicy, sign } = this.createToken(params);
        return `${this.options.accessKey}:${sign}:${putPolicy}`;
    }
}
exports.NosClientAuthExt = NosClientAuthExt;
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