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path: root/apps/files_sharing/src/utils/GeneratePassword.js
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/**
 * @copyright Copyright (c) 2020 John Molakvoæ <skjnldsv@protonmail.com>
 *
 * @author John Molakvoæ <skjnldsv@protonmail.com>
 *
 * @license AGPL-3.0-or-later
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */

import axios from '@nextcloud/axios'
import Config from '../services/ConfigService.js'
import { showError, showSuccess } from '@nextcloud/dialogs'

const config = new Config()
// note: some chars removed on purpose to make them human friendly when read out
const passwordSet = 'abcdefgijkmnopqrstwxyzABCDEFGHJKLMNPQRSTWXYZ23456789'

/**
 * Generate a valid policy password or
 * request a valid password if password_policy
 * is enabled
 *
 * @return {string} a valid password
 */
export default async function() {
	// password policy is enabled, let's request a pass
	if (config.passwordPolicy.api && config.passwordPolicy.api.generate) {
		try {
			const request = await axios.get(config.passwordPolicy.api.generate)
			if (request.data.ocs.data.password) {
				showSuccess(t('files_sharing', 'Password created successfully'))
				return request.data.ocs.data.password
			}
		} catch (error) {
			console.info('Error generating password from password_policy', error)
			showError(t('files_sharing', 'Error generating password from password policy'))
		}
	}

	const array = new Uint8Array(10)
	const ratio = passwordSet.length / 255
	self.crypto.getRandomValues(array)
	let password = ''
	for (let i = 0; i < array.length; i++) {
		password += passwordSet.charAt(array[i] * ratio)
	}
	return password
}