66 lines
2.1 KiB
JavaScript
66 lines
2.1 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const crypto_1 = __importDefault(require("crypto"));
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const buffer_1 = require("buffer");
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class qiniuInstance {
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accessKey;
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secretKey;
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uploadHost; //七牛上传url
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bucket;
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domain;
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constructor(config) {
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const { accessKey, secretKey, uploadHost, bucket, domain } = config;
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this.accessKey = accessKey;
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this.secretKey = secretKey;
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this.uploadHost = uploadHost;
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this.bucket = bucket;
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this.domain = domain;
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}
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async getUploadInfo(key) {
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try {
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const { uploadHost, domain, bucket } = this;
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const scope = `${bucket}:${key}`;
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const uploadToken = this.getToken(scope);
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return {
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key,
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uploadToken,
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uploadHost,
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bucket,
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domain,
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};
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}
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catch (err) {
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throw err;
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}
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}
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getToken(scope) {
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// 构造策略
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const putPolicy = {
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scope: scope,
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deadline: 3600 + Math.floor(Date.now() / 1000),
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};
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// 构造凭证
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const encodedFlags = this.urlSafeBase64Encode(JSON.stringify(putPolicy));
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const encoded = this.hmacSha1(encodedFlags, this.secretKey);
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const encodedSign = this.base64ToUrlSafe(encoded);
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const uploadToken = this.accessKey + ':' + encodedSign + ':' + encodedFlags;
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return uploadToken;
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}
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base64ToUrlSafe(v) {
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return v.replace(/\//g, '_').replace(/\+/g, '-');
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}
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hmacSha1(encodedFlags, secretKey) {
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const hmac = crypto_1.default.createHmac('sha1', secretKey);
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hmac.update(encodedFlags);
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return hmac.digest('base64');
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}
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urlSafeBase64Encode(jsonFlags) {
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const encoded = buffer_1.Buffer.from(jsonFlags).toString('base64');
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return this.base64ToUrlSafe(encoded);
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}
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}
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exports.default = qiniuInstance;
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