36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
const { policy2Str } = require('../utils/policy2Str');
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const signHelper = require('../signUtils');
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const { isObject } = require('../utils/isObject');
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const proto = exports;
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/**
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* @param {Object or JSON} policy specifies the validity of the fields in the request.
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* @return {Object} params
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* {String} params.OSSAccessKeyId
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* {String} params.Signature
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* {String} params.policy JSON text encoded with UTF-8 and Base64.
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*/
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proto.calculatePostSignature = function calculatePostSignature(policy) {
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if (!isObject(policy) && typeof policy !== 'string') {
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throw new Error('policy must be JSON string or Object');
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}
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if (!isObject(policy)) {
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try {
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JSON.stringify(JSON.parse(policy));
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} catch (error) {
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throw new Error('policy must be JSON string or Object');
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}
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}
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policy = Buffer.from(policy2Str(policy), 'utf8').toString('base64');
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const Signature = signHelper.computeSignature(this.options.accessKeySecret, policy);
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const query = {
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OSSAccessKeyId: this.options.accessKeyId,
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Signature,
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policy
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};
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return query;
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};
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