@aws-amplify/core
Version:
Core category of aws-amplify
69 lines (67 loc) • 2.57 kB
JavaScript
;
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
/**
* Date & time utility functions to abstract the `aws-sdk` away from users.
* (v2 => v3 modularization is a breaking change)
*
* @see https://github.com/aws/aws-sdk-js/blob/6edf586dcc1de7fe8fbfbbd9a0d2b1847921e6e1/lib/util.js#L262
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.DateUtils = void 0;
const FIVE_MINUTES_IN_MS = 1000 * 60 * 5;
/**
* This utility is intended to be deprecated and replaced by `signRequest` and `presignUrl` functions from
* `clients/middleware/signing/signer/signatureV4`.
*
* TODO: refactor the logics here into `signRequest` and `presignUrl` functions and remove this class.
*
* @internal
* @deprecated
*/
exports.DateUtils = {
/**
* Milliseconds to offset the date to compensate for clock skew between device & services
*/
clockOffset: 0,
getDateWithClockOffset() {
if (exports.DateUtils.clockOffset) {
return new Date(new Date().getTime() + exports.DateUtils.clockOffset);
}
else {
return new Date();
}
},
/**
* @returns {number} Clock offset in milliseconds
*/
getClockOffset() {
return exports.DateUtils.clockOffset;
},
getHeaderStringFromDate(date = exports.DateUtils.getDateWithClockOffset()) {
return date.toISOString().replace(/[:-]|\.\d{3}/g, '');
},
getDateFromHeaderString(header) {
const [, year, month, day, hour, minute, second] = header.match(/^(\d{4})(\d{2})(\d{2})T(\d{2})(\d{2})(\d{2}).+/);
return new Date(Date.UTC(Number(year), Number(month) - 1, Number(day), Number(hour), Number(minute), Number(second)));
},
isClockSkewed(serverDate) {
// API gateway permits client calls that are off by no more than ±5 minutes
return (Math.abs(serverDate.getTime() - exports.DateUtils.getDateWithClockOffset().getTime()) >= FIVE_MINUTES_IN_MS);
},
isClockSkewError(error) {
if (!error.response || !error.response.headers) {
return false;
}
const { headers } = error.response;
return Boolean(['BadRequestException', 'InvalidSignatureException'].includes(headers['x-amzn-errortype']) &&
(headers.date || headers.Date));
},
/**
* @param {number} offset Clock offset in milliseconds
*/
setClockOffset(offset) {
exports.DateUtils.clockOffset = offset;
},
};
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