Differential D7570 Diff 27206 keyserver/src/utils/olm-utils.js

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keyserver/src/utils/olm-utils.js

	// @flow			// @flow

	import olm from '@commapp/olm';			import olm from '@commapp/olm';
	import type {			import type {
	Account as OlmAccount,			Account as OlmAccount,
	Utility as OlmUtility,			Utility as OlmUtility,
	} from '@commapp/olm';			} from '@commapp/olm';
	import uuid from 'uuid';			import uuid from 'uuid';

	type PickledOlmAccount = {			type PickledOlmAccount = {
	+picklingKey: string,			+picklingKey: string,
	+pickledAccount: string,			+pickledAccount: string,
	};			};

				const maxPublishedPrekeyAge = 30 * 24 * 60 * 60 * 1000;
				const maxOldPrekeyAge = 24 * 60 * 60 * 1000;

	async function createPickledOlmAccount(): Promise<PickledOlmAccount> {			async function createPickledOlmAccount(): Promise<PickledOlmAccount> {
	await olm.init();			await olm.init();
	const account = new olm.Account();			const account = new olm.Account();
	account.create();			account.create();

	const picklingKey = uuid.v4();			const picklingKey = uuid.v4();
	const pickledAccount = account.pickle(picklingKey);			const pickledAccount = account.pickle(picklingKey);

	Show All 20 Lines
	function getOlmUtility(): OlmUtility {			function getOlmUtility(): OlmUtility {
	if (cachedOLMUtility) {			if (cachedOLMUtility) {
	return cachedOLMUtility;			return cachedOLMUtility;
	}			}
	cachedOLMUtility = new olm.Utility();			cachedOLMUtility = new olm.Utility();
	return cachedOLMUtility;			return cachedOLMUtility;
	}			}

	export { createPickledOlmAccount, getOlmUtility, unpickleOlmAccount };			async function validateAccountPrekey(account: OlmAccount): Promise<void> {
				const currentDate = new Date();
				const lastPrekeyPublishDate = new Date(account.last_prekey_publish_time());

				const prekeyPublished = !account.unpublished_prekey();
				if (
				prekeyPublished &&
				currentDate - lastPrekeyPublishDate > maxPublishedPrekeyAge
				) {
				// If there is no prekey or the current prekey is older than month
				// we need to generate new one.
				account.generate_prekey();
				}

				if (
				prekeyPublished &&
				currentDate - lastPrekeyPublishDate >= maxOldPrekeyAge
				) {
				account.forget_old_prekey();
				}
				}

				export {
				createPickledOlmAccount,
				getOlmUtility,
				unpickleOlmAccount,
				validateAccountPrekey,
				};