mirror of
https://github.com/nextcloud/passman.git
synced 2024-11-11 09:59:21 +08:00
127 lines
No EOL
3.5 KiB
JavaScript
127 lines
No EOL
3.5 KiB
JavaScript
/**
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* Nextcloud - passman
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*
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* @copyright Copyright (c) 2016, Sander Brand (brantje@gmail.com)
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* @copyright Copyright (c) 2016, Marcos Zuriaga Miguel (wolfi@wolfi.es)
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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(function () {
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'use strict';
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/**
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* @ngdoc directive
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* @name passmanApp.directive:passwordGen
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* @description
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* # passwordGen
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*/
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angular.module('passmanApp')
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.directive('otpGenerator', ['$compile', '$timeout',
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function ($compile, $timeout) {
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function dec2hex (s) {
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return (s < 15.5 ? '0' : '') + Math.round(s).toString(16);
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}
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function hex2dec (s) {
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return parseInt(s, 16);
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}
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function base32tohex (base32) {
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if (!base32) {
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return;
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}
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var base32chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
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var bits = "";
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var hex = "";
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var i;
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for (i = 0; i < base32.length; i++) {
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var val = base32chars.indexOf(base32.charAt(i).toUpperCase());
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bits += leftpad(val.toString(2), 5, '0');
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}
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for (i = 0; i + 4 <= bits.length; i += 4) {
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var chunk = bits.substr(i, 4);
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hex = hex + parseInt(chunk, 2).toString(16);
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}
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return hex;
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}
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function leftpad (str, len, pad) {
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if (len + 1 >= str.length) {
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str = Array(len + 1 - str.length).join(pad) + str;
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}
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return str;
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}
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return {
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restrict: 'A',
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template: '<span class="otp_generator"><span credential-field value="otp" secret="\'true\'"></span> <span ng-bind="timeleft"></span></span>',
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transclude: false,
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scope: {
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secret: '='
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},
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replace: true,
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link: function (scope) {
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scope.otp = null;
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scope.timeleft = null;
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scope.timer = null;
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var updateOtp = function () {
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if (!scope.secret) {
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return;
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}
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var key = base32tohex(scope.secret);
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var epoch = Math.round(new Date().getTime() / 1000.0);
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var time = leftpad(dec2hex(Math.floor(epoch / 30)), 16, '0');
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/** global: jsSHA */
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var hmacObj = new jsSHA(time, 'HEX');
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var hmac = hmacObj.getHMAC(key, 'HEX', 'SHA-1', "HEX");
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var offset = hex2dec(hmac.substring(hmac.length - 1));
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var otp = (hex2dec(hmac.substr(offset * 2, 8)) & hex2dec('7fffffff')) + '';
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otp = (otp).substr(otp.length - 6, 6);
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scope.otp = otp;
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};
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var timer = function () {
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var epoch = Math.round(new Date().getTime() / 1000.0);
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var countDown = 30 - (epoch % 30);
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if (epoch % 30 === 0) updateOtp();
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scope.timeleft = countDown;
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scope.timer = $timeout(timer, 1000);
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};
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scope.$watch("secret", function (n) {
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if (n) {
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$timeout.cancel(scope.timer);
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updateOtp();
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timer();
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} else {
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$timeout.cancel(scope.timer);
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}
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}, true);
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scope.$on(
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"$destroy",
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function () {
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$timeout.cancel(scope.timer);
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}
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);
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}
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};
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}
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]);
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}()); |