Differential D7026 Diff 23623 keyserver/src/utils/olm-utils.js

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	// @flow			// @flow

	import olm from '@matrix-org/olm';			import olm from '@matrix-org/olm';
				import type { Utility as OlmUtility } from '@matrix-org/olm';
	import invariant from 'invariant';			import invariant from 'invariant';

	import { importJSON } from './import-json.js';			import { importJSON } from './import-json.js';

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

	async function getOlmConfig(): Promise<OlmConfig> {			async function getOlmConfig(): Promise<OlmConfig> {
	const olmConfig = await importJSON({ folder: 'secrets', name: 'olm_config' });			const olmConfig = await importJSON({ folder: 'secrets', name: 'olm_config' });
	invariant(olmConfig, 'OLM config missing');			invariant(olmConfig, 'OLM config missing');
	return olmConfig;			return olmConfig;
	}			}

	export type OLMUtility = {			let cachedOLMUtility: OlmUtility;
	+free: () => void,			function getOlmUtility(): OlmUtility {
	+sha256: (input: string \| Uint8Array) => string,
	+ed25519_verify: (
	key: string,
	message: string \| Uint8Array,
	signature: string,
	) => void,
	};

	let cachedOLMUtility: 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 { getOlmConfig, getOLMUtility };			export { getOlmConfig, getOlmUtility };