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30 lines
1.0 KiB
30 lines
1.0 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.InvalidBackupFlags = void 0;
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exports.parseBackupFlags = parseBackupFlags;
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/**
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* Make sense of Bits 3 and 4 in authenticator indicating:
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*
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* - Whether the credential can be used on multiple devices
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* - Whether the credential is backed up or not
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*
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* Invalid configurations will raise an `Error`
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*/
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function parseBackupFlags({ be, bs }) {
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const credentialBackedUp = bs;
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let credentialDeviceType = 'singleDevice';
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if (be) {
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credentialDeviceType = 'multiDevice';
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}
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if (credentialDeviceType === 'singleDevice' && credentialBackedUp) {
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throw new InvalidBackupFlags('Single-device credential indicated that it was backed up, which should be impossible.');
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}
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return { credentialDeviceType, credentialBackedUp };
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}
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class InvalidBackupFlags extends Error {
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constructor(message) {
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super(message);
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this.name = 'InvalidBackupFlags';
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}
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}
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exports.InvalidBackupFlags = InvalidBackupFlags;
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