modules/luci-base/htdocs/luci-static/resources/luci.js

   1 (function(window, document, undefined) {
   2         'use strict';
   3
   4         /* Object.assign polyfill for IE */
   5         if (typeof Object.assign !== 'function') {
   6                 Object.defineProperty(Object, 'assign', {
   7                         value: function assign(target, varArgs) {
   8                                 if (target == null)
   9                                         throw new TypeError('Cannot convert undefined or null to object');
  10
  11                                 var to = Object(target);
  12
  13                                 for (var index = 1; index < arguments.length; index++)
  14                                         if (arguments[index] != null)
  15                                                 for (var nextKey in arguments[index])
  16                                                         if (Object.prototype.hasOwnProperty.call(arguments[index], nextKey))
  17                                                                 to[nextKey] = arguments[index][nextKey];
  18
  19                                 return to;
  20                         },
  21                         writable: true,
  22                         configurable: true
  23                 });
  24         }
  25
  26         /* Promise.finally polyfill */
  27         if (typeof Promise.prototype.finally !== 'function') {
  28                 Promise.prototype.finally = function(fn) {
  29                         var onFinally = function(cb) {
  30                                 return Promise.resolve(fn.call(this)).then(cb);
  31                         };
  32
  33                         return this.then(
  34                                 function(result) { return onFinally.call(this, function() { return result }) },
  35                                 function(reason) { return onFinally.call(this, function() { return Promise.reject(reason) }) }
  36                         );
  37                 };
  38         }
  39
  40         /*
  41          * Class declaration and inheritance helper
  42          */
  43
  44         var toCamelCase = function(s) {
  45                 return s.replace(/(?:^|[\. -])(.)/g, function(m0, m1) { return m1.toUpperCase() });
  46         };
  47
  48         var superContext = null, Class = Object.assign(function() {}, {
  49                 extend: function(properties) {
  50                         var props = {
  51                                 __base__: { value: this.prototype },
  52                                 __name__: { value: properties.__name__ || 'anonymous' }
  53                         };
  54
  55                         var ClassConstructor = function() {
  56                                 if (!(this instanceof ClassConstructor))
  57                                         throw new TypeError('Constructor must not be called without "new"');
  58
  59                                 if (Object.getPrototypeOf(this).hasOwnProperty('__init__')) {
  60                                         if (typeof(this.__init__) != 'function')
  61                                                 throw new TypeError('Class __init__ member is not a function');
  62
  63                                         this.__init__.apply(this, arguments)
  64                                 }
  65                                 else {
  66                                         this.super('__init__', arguments);
  67                                 }
  68                         };
  69
  70                         for (var key in properties)
  71                                 if (!props[key] && properties.hasOwnProperty(key))
  72                                         props[key] = { value: properties[key], writable: true };
  73
  74                         ClassConstructor.prototype = Object.create(this.prototype, props);
  75                         ClassConstructor.prototype.constructor = ClassConstructor;
  76                         Object.assign(ClassConstructor, this);
  77                         ClassConstructor.displayName = toCamelCase(props.__name__.value + 'Class');
  78
  79                         return ClassConstructor;
  80                 },
  81
  82                 singleton: function(properties /*, ... */) {
  83                         return Class.extend(properties)
  84                                 .instantiate(Class.prototype.varargs(arguments, 1));
  85                 },
  86
  87                 instantiate: function(args) {
  88                         return new (Function.prototype.bind.apply(this,
  89                                 Class.prototype.varargs(args, 0, null)))();
  90                 },
  91
  92                 call: function(self, method) {
  93                         if (typeof(this.prototype[method]) != 'function')
  94                                 throw new ReferenceError(method + ' is not defined in class');
  95
  96                         return this.prototype[method].apply(self, self.varargs(arguments, 1));
  97                 },
  98
  99                 isSubclass: function(_class) {
 100                         return (_class != null &&
 101                                 typeof(_class) == 'function' &&
 102                                 _class.prototype instanceof this);
 103                 },
 104
 105                 prototype: {
 106                         varargs: function(args, offset /*, ... */) {
 107                                 return Array.prototype.slice.call(arguments, 2)
 108                                         .concat(Array.prototype.slice.call(args, offset));
 109                         },
 110
 111                         super: function(key, callArgs) {
 112                                 for (superContext = Object.getPrototypeOf(superContext ||
 113                                                                           Object.getPrototypeOf(this));
 114                                      superContext && !superContext.hasOwnProperty(key);
 115                                      superContext = Object.getPrototypeOf(superContext)) { }
 116
 117                                 if (!superContext)
 118                                         return null;
 119
 120                                 var res = superContext[key];
 121
 122                                 if (arguments.length > 1) {
 123                                         if (typeof(res) != 'function')
 124                                                 throw new ReferenceError(key + ' is not a function in base class');
 125
 126                                         if (typeof(callArgs) != 'object')
 127                                                 callArgs = this.varargs(arguments, 1);
 128
 129                                         res = res.apply(this, callArgs);
 130                                 }
 131
 132                                 superContext = null;
 133
 134                                 return res;
 135                         },
 136
 137                         toString: function() {
 138                                 var s = '[' + this.constructor.displayName + ']', f = true;
 139                                 for (var k in this) {
 140                                         if (this.hasOwnProperty(k)) {
 141                                                 s += (f ? ' {\n' : '') + '  ' + k + ': ' + typeof(this[k]) + '\n';
 142                                                 f = false;
 143                                         }
 144                                 }
 145                                 return s + (f ? '' : '}');
 146                         }
 147                 }
 148         });
 149
 150
 151         /*
 152          * HTTP Request helper
 153          */
 154
 155         var Headers = Class.extend({
 156                 __name__: 'LuCI.XHR.Headers',
 157                 __init__: function(xhr) {
 158                         var hdrs = this.headers = {};
 159                         xhr.getAllResponseHeaders().split(/\r\n/).forEach(function(line) {
 160                                 var m = /^([^:]+):(.*)$/.exec(line);
 161                                 if (m != null)
 162                                         hdrs[m[1].trim().toLowerCase()] = m[2].trim();
 163                         });
 164                 },
 165
 166                 has: function(name) {
 167                         return this.headers.hasOwnProperty(String(name).toLowerCase());
 168                 },
 169
 170                 get: function(name) {
 171                         var key = String(name).toLowerCase();
 172                         return this.headers.hasOwnProperty(key) ? this.headers[key] : null;
 173                 }
 174         });
 175
 176         var Response = Class.extend({
 177                 __name__: 'LuCI.XHR.Response',
 178                 __init__: function(xhr, url, duration, headers, content) {
 179                         this.ok = (xhr.status >= 200 && xhr.status <= 299);
 180                         this.status = xhr.status;
 181                         this.statusText = xhr.statusText;
 182                         this.headers = (headers != null) ? headers : new Headers(xhr);
 183                         this.duration = duration;
 184                         this.url = url;
 185                         this.xhr = xhr;
 186
 187                         if (content != null && typeof(content) == 'object') {
 188                                 this.responseJSON = content;
 189                                 this.responseText = null;
 190                         }
 191                         else if (content != null) {
 192                                 this.responseJSON = null;
 193                                 this.responseText = String(content);
 194                         }
 195                         else {
 196                                 this.responseJSON = null;
 197                                 this.responseText = xhr.responseText;
 198                         }
 199                 },
 200
 201                 clone: function(content) {
 202                         var copy = new Response(this.xhr, this.url, this.duration, this.headers, content);
 203
 204                         copy.ok = this.ok;
 205                         copy.status = this.status;
 206                         copy.statusText = this.statusText;
 207
 208                         return copy;
 209                 },
 210
 211                 json: function() {
 212                         if (this.responseJSON == null)
 213                                 this.responseJSON = JSON.parse(this.responseText);
 214
 215                         return this.responseJSON;
 216                 },
 217
 218                 text: function() {
 219                         if (this.responseText == null && this.responseJSON != null)
 220                                 this.responseText = JSON.stringify(this.responseJSON);
 221
 222                         return this.responseText;
 223                 }
 224         });
 225
 226
 227         var requestQueue = [];
 228
 229         function isQueueableRequest(opt) {
 230                 if (!classes.rpc)
 231                         return false;
 232
 233                 if (opt.method != 'POST' || typeof(opt.content) != 'object')
 234                         return false;
 235
 236                 if (opt.nobatch === true)
 237                         return false;
 238
 239                 var rpcBaseURL = Request.expandURL(classes.rpc.getBaseURL());
 240
 241                 return (rpcBaseURL != null && opt.url.indexOf(rpcBaseURL) == 0);
 242         }
 243
 244         function flushRequestQueue() {
 245                 if (!requestQueue.length)
 246                         return;
 247
 248                 var reqopt = Object.assign({}, requestQueue[0][0], { content: [], nobatch: true }),
 249                     batch = [];
 250
 251                 for (var i = 0; i < requestQueue.length; i++) {
 252                         batch[i] = requestQueue[i];
 253                         reqopt.content[i] = batch[i][0].content;
 254                 }
 255
 256                 requestQueue.length = 0;
 257
 258                 Request.request(rpcBaseURL, reqopt).then(function(reply) {
 259                         var json = null, req = null;
 260
 261                         try { json = reply.json() }
 262                         catch(e) { }
 263
 264                         while ((req = batch.shift()) != null)
 265                                 if (Array.isArray(json) && json.length)
 266                                         req[2].call(reqopt, reply.clone(json.shift()));
 267                                 else
 268                                         req[1].call(reqopt, new Error('No related RPC reply'));
 269                 }).catch(function(error) {
 270                         var req = null;
 271
 272                         while ((req = batch.shift()) != null)
 273                                 req[1].call(reqopt, error);
 274                 });
 275         }
 276
 277         var Request = Class.singleton({
 278                 __name__: 'LuCI.Request',
 279
 280                 interceptors: [],
 281
 282                 expandURL: function(url) {
 283                         if (!/^(?:[^/]+:)?\/\//.test(url))
 284                                 url = location.protocol + '//' + location.host + url;
 285
 286                         return url;
 287                 },
 288
 289                 request: function(target, options) {
 290                         var state = { xhr: new XMLHttpRequest(), url: this.expandURL(target), start: Date.now() },
 291                             opt = Object.assign({}, options, state),
 292                             content = null,
 293                             contenttype = null,
 294                             callback = this.handleReadyStateChange;
 295
 296                         return new Promise(function(resolveFn, rejectFn) {
 297                                 opt.xhr.onreadystatechange = callback.bind(opt, resolveFn, rejectFn);
 298                                 opt.method = String(opt.method || 'GET').toUpperCase();
 299
 300                                 if ('query' in opt) {
 301                                         var q = (opt.query != null) ? Object.keys(opt.query).map(function(k) {
 302                                                 if (opt.query[k] != null) {
 303                                                         var v = (typeof(opt.query[k]) == 'object')
 304                                                                 ? JSON.stringify(opt.query[k])
 305                                                                 : String(opt.query[k]);
 306
 307                                                         return '%s=%s'.format(encodeURIComponent(k), encodeURIComponent(v));
 308                                                 }
 309                                                 else {
 310                                                         return encodeURIComponent(k);
 311                                                 }
 312                                         }).join('&') : '';
 313
 314                                         if (q !== '') {
 315                                                 switch (opt.method) {
 316                                                 case 'GET':
 317                                                 case 'HEAD':
 318                                                 case 'OPTIONS':
 319                                                         opt.url += ((/\?/).test(opt.url) ? '&' : '?') + q;
 320                                                         break;
 321
 322                                                 default:
 323                                                         if (content == null) {
 324                                                                 content = q;
 325                                                                 contenttype = 'application/x-www-form-urlencoded';
 326                                                         }
 327                                                 }
 328                                         }
 329                                 }
 330
 331                                 if (!opt.cache)
 332                                         opt.url += ((/\?/).test(opt.url) ? '&' : '?') + (new Date()).getTime();
 333
 334                                 if (isQueueableRequest(opt)) {
 335                                         requestQueue.push([opt, rejectFn, resolveFn]);
 336                                         requestAnimationFrame(flushRequestQueue);
 337                                         return;
 338                                 }
 339
 340                                 if ('username' in opt && 'password' in opt)
 341                                         opt.xhr.open(opt.method, opt.url, true, opt.username, opt.password);
 342                                 else
 343                                         opt.xhr.open(opt.method, opt.url, true);
 344
 345                                 opt.xhr.responseType = 'text';
 346
 347                                 if ('overrideMimeType' in opt.xhr)
 348                                         opt.xhr.overrideMimeType('application/octet-stream');
 349
 350                                 if ('timeout' in opt)
 351                                         opt.xhr.timeout = +opt.timeout;
 352
 353                                 if ('credentials' in opt)
 354                                         opt.xhr.withCredentials = !!opt.credentials;
 355
 356                                 if (opt.content != null) {
 357                                         switch (typeof(opt.content)) {
 358                                         case 'function':
 359                                                 content = opt.content(xhr);
 360                                                 break;
 361
 362                                         case 'object':
 363                                                 if (!(opt.content instanceof FormData)) {
 364                                                         content = JSON.stringify(opt.content);
 365                                                         contenttype = 'application/json';
 366                                                 }
 367                                                 else {
 368                                                         content = opt.content;
 369                                                 }
 370                                                 break;
 371
 372                                         default:
 373                                                 content = String(opt.content);
 374                                         }
 375                                 }
 376
 377                                 if ('headers' in opt)
 378                                         for (var header in opt.headers)
 379                                                 if (opt.headers.hasOwnProperty(header)) {
 380                                                         if (header.toLowerCase() != 'content-type')
 381                                                                 opt.xhr.setRequestHeader(header, opt.headers[header]);
 382                                                         else
 383                                                                 contenttype = opt.headers[header];
 384                                                 }
 385
 386                                 if ('progress' in opt && 'upload' in opt.xhr)
 387                                         opt.xhr.upload.addEventListener('progress', opt.progress);
 388
 389                                 if (contenttype != null)
 390                                         opt.xhr.setRequestHeader('Content-Type', contenttype);
 391
 392                                 try {
 393                                         opt.xhr.send(content);
 394                                 }
 395                                 catch (e) {
 396                                         rejectFn.call(opt, e);
 397                                 }
 398                         });
 399                 },
 400
 401                 handleReadyStateChange: function(resolveFn, rejectFn, ev) {
 402                         var xhr = this.xhr;
 403
 404                         if (xhr.readyState !== 4)
 405                                 return;
 406
 407                         if (xhr.status === 0 && xhr.statusText === '') {
 408                                 rejectFn.call(this, new Error('XHR request aborted by browser'));
 409                         }
 410                         else {
 411                                 var response = new Response(
 412                                         xhr, xhr.responseURL || this.url, Date.now() - this.start);
 413
 414                                 Promise.all(Request.interceptors.map(function(fn) { return fn(response) }))
 415                                         .then(resolveFn.bind(this, response))
 416                                         .catch(rejectFn.bind(this));
 417                         }
 418                 },
 419
 420                 get: function(url, options) {
 421                         return this.request(url, Object.assign({ method: 'GET' }, options));
 422                 },
 423
 424                 post: function(url, data, options) {
 425                         return this.request(url, Object.assign({ method: 'POST', content: data }, options));
 426                 },
 427
 428                 addInterceptor: function(interceptorFn) {
 429                         if (typeof(interceptorFn) == 'function')
 430                                 this.interceptors.push(interceptorFn);
 431                         return interceptorFn;
 432                 },
 433
 434                 removeInterceptor: function(interceptorFn) {
 435                         var oldlen = this.interceptors.length, i = oldlen;
 436                         while (i--)
 437                                 if (this.interceptors[i] === interceptorFn)
 438                                         this.interceptors.splice(i, 1);
 439                         return (this.interceptors.length < oldlen);
 440                 },
 441
 442                 poll: {
 443                         add: function(interval, url, options, callback) {
 444                                 if (isNaN(interval) || interval <= 0)
 445                                         throw new TypeError('Invalid poll interval');
 446
 447                                 var ival = interval >>> 0,
 448                                     opts = Object.assign({}, options, { timeout: ival * 1000 - 5 });
 449
 450                                 return Poll.add(function() {
 451                                         return Request.request(url, options).then(function(res) {
 452                                                 if (!Poll.active())
 453                                                         return;
 454
 455                                                 try {
 456                                                         callback(res, res.json(), res.duration);
 457                                                 }
 458                                                 catch (err) {
 459                                                         callback(res, null, res.duration);
 460                                                 }
 461                                         });
 462                                 }, ival);
 463                         },
 464
 465                         remove: function(entry) { return Poll.remove(entry) },
 466                         start: function() { return Poll.start() },
 467                         stop: function() { return Poll.stop() },
 468                         active: function() { return Poll.active() }
 469                 }
 470         });
 471
 472         var Poll = Class.singleton({
 473                 __name__: 'LuCI.Poll',
 474
 475                 queue: [],
 476
 477                 add: function(fn, interval) {
 478                         if (interval == null || interval <= 0)
 479                                 interval = window.L ? window.L.env.pollinterval : null;
 480
 481                         if (isNaN(interval) || typeof(fn) != 'function')
 482                                 throw new TypeError('Invalid argument to LuCI.Poll.add()');
 483
 484                         for (var i = 0; i < this.queue.length; i++)
 485                                 if (this.queue[i].fn === fn)
 486                                         return false;
 487
 488                         var e = {
 489                                 r: true,
 490                                 i: interval >>> 0,
 491                                 fn: fn
 492                         };
 493
 494                         this.queue.push(e);
 495
 496                         if (this.tick != null && !this.active())
 497                                 this.start();
 498
 499                         return true;
 500                 },
 501
 502                 remove: function(fn) {
 503                         if (typeof(fn) != 'function')
 504                                 throw new TypeError('Invalid argument to LuCI.Poll.remove()');
 505
 506                         var len = this.queue.length;
 507
 508                         for (var i = len; i > 0; i--)
 509                                 if (this.queue[i-1].fn === fn)
 510                                         this.queue.splice(i-1, 1);
 511
 512                         if (!this.queue.length && this.stop())
 513                                 this.tick = 0;
 514
 515                         return (this.queue.length != len);
 516                 },
 517
 518                 start: function() {
 519                         if (this.active())
 520                                 return false;
 521
 522                         this.tick = 0;
 523
 524                         if (this.queue.length) {
 525                                 this.timer = window.setInterval(this.step, 1000);
 526                                 this.step();
 527                                 document.dispatchEvent(new CustomEvent('poll-start'));
 528                         }
 529
 530                         return true;
 531                 },
 532
 533                 stop: function() {
 534                         if (!this.active())
 535                                 return false;
 536
 537                         document.dispatchEvent(new CustomEvent('poll-stop'));
 538                         window.clearInterval(this.timer);
 539                         delete this.timer;
 540                         delete this.tick;
 541                         return true;
 542                 },
 543
 544                 step: function() {
 545                         for (var i = 0, e = null; (e = Poll.queue[i]) != null; i++) {
 546                                 if ((Poll.tick % e.i) != 0)
 547                                         continue;
 548
 549                                 if (!e.r)
 550                                         continue;
 551
 552                                 e.r = false;
 553
 554                                 Promise.resolve(e.fn()).finally((function() { this.r = true }).bind(e));
 555                         }
 556
 557                         Poll.tick = (Poll.tick + 1) % Math.pow(2, 32);
 558                 },
 559
 560                 active: function() {
 561                         return (this.timer != null);
 562                 }
 563         });
 564
 565
 566         var dummyElem = null,
 567             domParser = null,
 568             originalCBIInit = null,
 569             rpcBaseURL = null,
 570             sysFeatures = null,
 571             classes = {};
 572
 573         var LuCI = Class.extend({
 574                 __name__: 'LuCI',
 575                 __init__: function(env) {
 576
 577                         document.querySelectorAll('script[src*="/luci.js"]').forEach(function(s) {
 578                                 if (env.base_url == null || env.base_url == '') {
 579                                         var m = (s.getAttribute('src') || '').match(/^(.*)\/luci\.js(?:\?v=([^?]+))?$/);
 580                                         if (m) {
 581                                                 env.base_url = m[1];
 582                                                 env.resource_version = m[2];
 583                                         }
 584                                 }
 585                         });
 586
 587                         if (env.base_url == null)
 588                                 this.error('InternalError', 'Cannot find url of luci.js');
 589
 590                         Object.assign(this.env, env);
 591
 592                         document.addEventListener('poll-start', function(ev) {
 593                                 document.querySelectorAll('[id^="xhr_poll_status"]').forEach(function(e) {
 594                                         e.style.display = (e.id == 'xhr_poll_status_off') ? 'none' : '';
 595                                 });
 596                         });
 597
 598                         document.addEventListener('poll-stop', function(ev) {
 599                                 document.querySelectorAll('[id^="xhr_poll_status"]').forEach(function(e) {
 600                                         e.style.display = (e.id == 'xhr_poll_status_on') ? 'none' : '';
 601                                 });
 602                         });
 603
 604                         var domReady = new Promise(function(resolveFn, rejectFn) {
 605                                 document.addEventListener('DOMContentLoaded', resolveFn);
 606                         });
 607
 608                         Promise.all([
 609                                 domReady,
 610                                 this.require('ui'),
 611                                 this.require('rpc'),
 612                                 this.require('form'),
 613                                 this.probeRPCBaseURL()
 614                         ]).then(this.setupDOM.bind(this)).catch(this.error);
 615
 616                         originalCBIInit = window.cbi_init;
 617                         window.cbi_init = function() {};
 618                 },
 619
 620                 raise: function(type, fmt /*, ...*/) {
 621                         var e = null,
 622                             msg = fmt ? String.prototype.format.apply(fmt, this.varargs(arguments, 2)) : null,
 623                             stack = null;
 624
 625                         if (type instanceof Error) {
 626                                 e = type;
 627
 628                                 if (msg)
 629                                         e.message = msg + ': ' + e.message;
 630                         }
 631                         else {
 632                                 try { throw new Error('stacktrace') }
 633                                 catch (e2) { stack = (e2.stack || '').split(/\n/) }
 634
 635                                 e = new (window[type || 'Error'] || Error)(msg || 'Unspecified error');
 636                                 e.name = type || 'Error';
 637                         }
 638
 639                         stack = (stack || []).map(function(frame) {
 640                                 frame = frame.replace(/(.*?)@(.+):(\d+):(\d+)/g, 'at $1 ($2:$3:$4)').trim();
 641                                 return frame ? '  ' + frame : '';
 642                         });
 643
 644                         if (!/^  at /.test(stack[0]))
 645                                 stack.shift();
 646
 647                         if (/\braise /.test(stack[0]))
 648                                 stack.shift();
 649
 650                         if (/\berror /.test(stack[0]))
 651                                 stack.shift();
 652
 653                         if (stack.length)
 654                                 e.message += '\n' + stack.join('\n');
 655
 656                         if (window.console && console.debug)
 657                                 console.debug(e);
 658
 659                         throw e;
 660                 },
 661
 662                 error: function(type, fmt /*, ...*/) {
 663                         try {
 664                                 L.raise.apply(L, Array.prototype.slice.call(arguments));
 665                         }
 666                         catch (e) {
 667                                 if (!e.reported) {
 668                                         if (L.ui)
 669                                                 L.ui.addNotification(e.name || _('Runtime error'),
 670                                                         E('pre', {}, e.message), 'danger');
 671                                         else
 672                                                 L.dom.content(document.querySelector('#maincontent'),
 673                                                         E('pre', { 'class': 'alert-message error' }, e.message));
 674
 675                                         e.reported = true;
 676                                 }
 677
 678                                 throw e;
 679                         }
 680                 },
 681
 682                 bind: function(fn, self /*, ... */) {
 683                         return Function.prototype.bind.apply(fn, this.varargs(arguments, 2, self));
 684                 },
 685
 686                 /* Class require */
 687                 require: function(name, from) {
 688                         var L = this, url = null, from = from || [];
 689
 690                         /* Class already loaded */
 691                         if (classes[name] != null) {
 692                                 /* Circular dependency */
 693                                 if (from.indexOf(name) != -1)
 694                                         L.raise('DependencyError',
 695                                                 'Circular dependency: class "%s" depends on "%s"',
 696                                                 name, from.join('" which depends on "'));
 697
 698                                 return classes[name];
 699                         }
 700
 701                         url = '%s/%s.js%s'.format(L.env.base_url, name.replace(/\./g, '/'), (L.env.resource_version ? '?v=' + L.env.resource_version : ''));
 702                         from = [ name ].concat(from);
 703
 704                         var compileClass = function(res) {
 705                                 if (!res.ok)
 706                                         L.raise('NetworkError',
 707                                                 'HTTP error %d while loading class file "%s"', res.status, url);
 708
 709                                 var source = res.text(),
 710                                     requirematch = /^require[ \t]+(\S+)(?:[ \t]+as[ \t]+([a-zA-Z_]\S*))?$/,
 711                                     strictmatch = /^use[ \t]+strict$/,
 712                                     depends = [],
 713                                     args = '';
 714
 715                                 /* find require statements in source */
 716                                 for (var i = 0, off = -1, quote = -1, esc = false; i < source.length; i++) {
 717                                         var chr = source.charCodeAt(i);
 718
 719                                         if (esc) {
 720                                                 esc = false;
 721                                         }
 722                                         else if (chr == 92) {
 723                                                 esc = true;
 724                                         }
 725                                         else if (chr == quote) {
 726                                                 var s = source.substring(off, i),
 727                                                     m = requirematch.exec(s);
 728
 729                                                 if (m) {
 730                                                         var dep = m[1], as = m[2] || dep.replace(/[^a-zA-Z0-9_]/g, '_');
 731                                                         depends.push(L.require(dep, from));
 732                                                         args += ', ' + as;
 733                                                 }
 734                                                 else if (!strictmatch.exec(s)) {
 735                                                         break;
 736                                                 }
 737
 738                                                 off = -1;
 739                                                 quote = -1;
 740                                         }
 741                                         else if (quote == -1 && (chr == 34 || chr == 39)) {
 742                                                 off = i + 1;
 743                                                 quote = chr;
 744                                         }
 745                                 }
 746
 747                                 /* load dependencies and instantiate class */
 748                                 return Promise.all(depends).then(function(instances) {
 749                                         var _factory, _class;
 750
 751                                         try {
 752                                                 _factory = eval(
 753                                                         '(function(window, document, L%s) { %s })\n\n//# sourceURL=%s\n'
 754                                                                 .format(args, source, res.url));
 755                                         }
 756                                         catch (error) {
 757                                                 L.raise('SyntaxError', '%s\n  in %s:%s',
 758                                                         error.message, res.url, error.lineNumber || '?');
 759                                         }
 760
 761                                         _factory.displayName = toCamelCase(name + 'ClassFactory');
 762                                         _class = _factory.apply(_factory, [window, document, L].concat(instances));
 763
 764                                         if (!Class.isSubclass(_class))
 765                                             L.error('TypeError', '"%s" factory yields invalid constructor', name);
 766
 767                                         if (_class.displayName == 'AnonymousClass')
 768                                                 _class.displayName = toCamelCase(name + 'Class');
 769
 770                                         var ptr = Object.getPrototypeOf(L),
 771                                             parts = name.split(/\./),
 772                                             instance = new _class();
 773
 774                                         for (var i = 0; ptr && i < parts.length - 1; i++)
 775                                                 ptr = ptr[parts[i]];
 776
 777                                         if (ptr)
 778                                                 ptr[parts[i]] = instance;
 779
 780                                         classes[name] = instance;
 781
 782                                         return instance;
 783                                 });
 784                         };
 785
 786                         /* Request class file */
 787                         classes[name] = Request.get(url, { cache: true }).then(compileClass);
 788
 789                         return classes[name];
 790                 },
 791
 792                 /* DOM setup */
 793                 probeRPCBaseURL: function() {
 794                         if (rpcBaseURL == null) {
 795                                 try {
 796                                         rpcBaseURL = window.sessionStorage.getItem('rpcBaseURL');
 797                                 }
 798                                 catch (e) { }
 799                         }
 800
 801                         if (rpcBaseURL == null) {
 802                                 var rpcFallbackURL = this.url('admin/ubus');
 803
 804                                 rpcBaseURL = Request.get('/ubus/').then(function(res) {
 805                                         return (rpcBaseURL = (res.status == 400) ? '/ubus/' : rpcFallbackURL);
 806                                 }, function() {
 807                                         return (rpcBaseURL = rpcFallbackURL);
 808                                 }).then(function(url) {
 809                                         try {
 810                                                 window.sessionStorage.setItem('rpcBaseURL', url);
 811                                         }
 812                                         catch (e) { }
 813
 814                                         return url;
 815                                 });
 816                         }
 817
 818                         return Promise.resolve(rpcBaseURL);
 819                 },
 820
 821                 probeSystemFeatures: function() {
 822                         if (sysFeatures == null) {
 823                                 try {
 824                                         sysFeatures = JSON.parse(window.sessionStorage.getItem('sysFeatures'));
 825                                 }
 826                                 catch (e) {}
 827                         }
 828
 829                         if (!this.isObject(sysFeatures)) {
 830                                 sysFeatures = classes.rpc.declare({
 831                                         object: 'luci',
 832                                         method: 'getFeatures',
 833                                         expect: { '': {} }
 834                                 })().then(function(features) {
 835                                         try {
 836                                                 window.sessionStorage.setItem('sysFeatures', JSON.stringify(features));
 837                                         }
 838                                         catch (e) {}
 839
 840                                         sysFeatures = features;
 841
 842                                         return features;
 843                                 });
 844                         }
 845
 846                         return Promise.resolve(sysFeatures);
 847                 },
 848
 849                 hasSystemFeature: function() {
 850                         var ft = sysFeatures[arguments[0]];
 851
 852                         if (arguments.length == 2)
 853                                 return this.isObject(ft) ? ft[arguments[1]] : null;
 854
 855                         return (ft != null && ft != false);
 856                 },
 857
 858                 notifySessionExpiry: function() {
 859                         Poll.stop();
 860
 861                         L.ui.showModal(_('Session expired'), [
 862                                 E('div', { class: 'alert-message warning' },
 863                                         _('A new login is required since the authentication session expired.')),
 864                                 E('div', { class: 'right' },
 865                                         E('div', {
 866                                                 class: 'btn primary',
 867                                                 click: function() {
 868                                                         var loc = window.location;
 869                                                         window.location = loc.protocol + '//' + loc.host + loc.pathname + loc.search;
 870                                                 }
 871                                         }, _('To login…')))
 872                         ]);
 873
 874                         L.raise('SessionError', 'Login session is expired');
 875                 },
 876
 877                 setupDOM: function(res) {
 878                         var domEv = res[0],
 879                             uiClass = res[1],
 880                             rpcClass = res[2],
 881                             formClass = res[3],
 882                             rpcBaseURL = res[4];
 883
 884                         rpcClass.setBaseURL(rpcBaseURL);
 885
 886                         rpcClass.addInterceptor(function(msg, req) {
 887                                 if (!L.isObject(msg) || !L.isObject(msg.error) || msg.error.code != -32002)
 888                                         return;
 889
 890                                 if (!L.isObject(req) || (req.object == 'session' && req.method == 'access'))
 891                                         return;
 892
 893                                 return rpcClass.declare({
 894                                         'object': 'session',
 895                                         'method': 'access',
 896                                         'params': [ 'scope', 'object', 'function' ],
 897                                         'expect': { access: true }
 898                                 })('uci', 'luci', 'read').catch(L.notifySessionExpiry);
 899                         });
 900
 901                         Request.addInterceptor(function(res) {
 902                                 var isDenied = false;
 903
 904                                 if (res.status == 403 && res.headers.get('X-LuCI-Login-Required') == 'yes')
 905                                         isDenied = true;
 906
 907                                 if (!isDenied)
 908                                         return;
 909
 910                                 L.notifySessionExpiry();
 911                         });
 912
 913                         return this.probeSystemFeatures().finally(this.initDOM);
 914                 },
 915
 916                 initDOM: function() {
 917                         originalCBIInit();
 918                         Poll.start();
 919                         document.dispatchEvent(new CustomEvent('luci-loaded'));
 920                 },
 921
 922                 env: {},
 923
 924                 /* URL construction helpers */
 925                 path: function(prefix, parts) {
 926                         var url = [ prefix || '' ];
 927
 928                         for (var i = 0; i < parts.length; i++)
 929                                 if (/^(?:[a-zA-Z0-9_.%,;-]+\/)*[a-zA-Z0-9_.%,;-]+$/.test(parts[i]))
 930                                         url.push('/', parts[i]);
 931
 932                         if (url.length === 1)
 933                                 url.push('/');
 934
 935                         return url.join('');
 936                 },
 937
 938                 url: function() {
 939                         return this.path(this.env.scriptname, arguments);
 940                 },
 941
 942                 resource: function() {
 943                         return this.path(this.env.resource, arguments);
 944                 },
 945
 946                 location: function() {
 947                         return this.path(this.env.scriptname, this.env.requestpath);
 948                 },
 949
 950
 951                 /* Data helpers */
 952                 isObject: function(val) {
 953                         return (val != null && typeof(val) == 'object');
 954                 },
 955
 956                 sortedKeys: function(obj, key, sortmode) {
 957                         if (obj == null || typeof(obj) != 'object')
 958                                 return [];
 959
 960                         return Object.keys(obj).map(function(e) {
 961                                 var v = (key != null) ? obj[e][key] : e;
 962
 963                                 switch (sortmode) {
 964                                 case 'addr':
 965                                         v = (v != null) ? v.replace(/(?:^|[.:])([0-9a-fA-F]{1,4})/g,
 966                                                 function(m0, m1) { return ('000' + m1.toLowerCase()).substr(-4) }) : null;
 967                                         break;
 968
 969                                 case 'num':
 970                                         v = (v != null) ? +v : null;
 971                                         break;
 972                                 }
 973
 974                                 return [ e, v ];
 975                         }).filter(function(e) {
 976                                 return (e[1] != null);
 977                         }).sort(function(a, b) {
 978                                 return (a[1] > b[1]);
 979                         }).map(function(e) {
 980                                 return e[0];
 981                         });
 982                 },
 983
 984                 toArray: function(val) {
 985                         if (val == null)
 986                                 return [];
 987                         else if (Array.isArray(val))
 988                                 return val;
 989                         else if (typeof(val) == 'object')
 990                                 return [ val ];
 991
 992                         var s = String(val).trim();
 993
 994                         if (s == '')
 995                                 return [];
 996
 997                         return s.split(/\s+/);
 998                 },
 999
1000
1001                 /* HTTP resource fetching */
1002                 get: function(url, args, cb) {
1003                         return this.poll(null, url, args, cb, false);
1004                 },
1005
1006                 post: function(url, args, cb) {
1007                         return this.poll(null, url, args, cb, true);
1008                 },
1009
1010                 poll: function(interval, url, args, cb, post) {
1011                         if (interval !== null && interval <= 0)
1012                                 interval = this.env.pollinterval;
1013
1014                         var data = post ? { token: this.env.token } : null,
1015                             method = post ? 'POST' : 'GET';
1016
1017                         if (!/^(?:\/|\S+:\/\/)/.test(url))
1018                                 url = this.url(url);
1019
1020                         if (args != null)
1021                                 data = Object.assign(data || {}, args);
1022
1023                         if (interval !== null)
1024                                 return Request.poll.add(interval, url, { method: method, query: data }, cb);
1025                         else
1026                                 return Request.request(url, { method: method, query: data })
1027                                         .then(function(res) {
1028                                                 var json = null;
1029                                                 if (/^application\/json\b/.test(res.headers.get('Content-Type')))
1030                                                         try { json = res.json() } catch(e) {}
1031                                                 cb(res.xhr, json, res.duration);
1032                                         });
1033                 },
1034
1035                 stop: function(entry) { return Poll.remove(entry) },
1036                 halt: function() { return Poll.stop() },
1037                 run: function() { return Poll.start() },
1038
1039                 /* DOM manipulation */
1040                 dom: Class.singleton({
1041                         __name__: 'LuCI.DOM',
1042
1043                         elem: function(e) {
1044                                 return (e != null && typeof(e) == 'object' && 'nodeType' in e);
1045                         },
1046
1047                         parse: function(s) {
1048                                 var elem;
1049
1050                                 try {
1051                                         domParser = domParser || new DOMParser();
1052                                         elem = domParser.parseFromString(s, 'text/html').body.firstChild;
1053                                 }
1054                                 catch(e) {}
1055
1056                                 if (!elem) {
1057                                         try {
1058                                                 dummyElem = dummyElem || document.createElement('div');
1059                                                 dummyElem.innerHTML = s;
1060                                                 elem = dummyElem.firstChild;
1061                                         }
1062                                         catch (e) {}
1063                                 }
1064
1065                                 return elem || null;
1066                         },
1067
1068                         matches: function(node, selector) {
1069                                 var m = this.elem(node) ? node.matches || node.msMatchesSelector : null;
1070                                 return m ? m.call(node, selector) : false;
1071                         },
1072
1073                         parent: function(node, selector) {
1074                                 if (this.elem(node) && node.closest)
1075                                         return node.closest(selector);
1076
1077                                 while (this.elem(node))
1078                                         if (this.matches(node, selector))
1079                                                 return node;
1080                                         else
1081                                                 node = node.parentNode;
1082
1083                                 return null;
1084                         },
1085
1086                         append: function(node, children) {
1087                                 if (!this.elem(node))
1088                                         return null;
1089
1090                                 if (Array.isArray(children)) {
1091                                         for (var i = 0; i < children.length; i++)
1092                                                 if (this.elem(children[i]))
1093                                                         node.appendChild(children[i]);
1094                                                 else if (children !== null && children !== undefined)
1095                                                         node.appendChild(document.createTextNode('' + children[i]));
1096
1097                                         return node.lastChild;
1098                                 }
1099                                 else if (typeof(children) === 'function') {
1100                                         return this.append(node, children(node));
1101                                 }
1102                                 else if (this.elem(children)) {
1103                                         return node.appendChild(children);
1104                                 }
1105                                 else if (children !== null && children !== undefined) {
1106                                         node.innerHTML = '' + children;
1107                                         return node.lastChild;
1108                                 }
1109
1110                                 return null;
1111                         },
1112
1113                         content: function(node, children) {
1114                                 if (!this.elem(node))
1115                                         return null;
1116
1117                                 var dataNodes = node.querySelectorAll('[data-idref]');
1118
1119                                 for (var i = 0; i < dataNodes.length; i++)
1120                                         delete this.registry[dataNodes[i].getAttribute('data-idref')];
1121
1122                                 while (node.firstChild)
1123                                         node.removeChild(node.firstChild);
1124
1125                                 return this.append(node, children);
1126                         },
1127
1128                         attr: function(node, key, val) {
1129                                 if (!this.elem(node))
1130                                         return null;
1131
1132                                 var attr = null;
1133
1134                                 if (typeof(key) === 'object' && key !== null)
1135                                         attr = key;
1136                                 else if (typeof(key) === 'string')
1137                                         attr = {}, attr[key] = val;
1138
1139                                 for (key in attr) {
1140                                         if (!attr.hasOwnProperty(key) || attr[key] == null)
1141                                                 continue;
1142
1143                                         switch (typeof(attr[key])) {
1144                                         case 'function':
1145                                                 node.addEventListener(key, attr[key]);
1146                                                 break;
1147
1148                                         case 'object':
1149                                                 node.setAttribute(key, JSON.stringify(attr[key]));
1150                                                 break;
1151
1152                                         default:
1153                                                 node.setAttribute(key, attr[key]);
1154                                         }
1155                                 }
1156                         },
1157
1158                         create: function() {
1159                                 var html = arguments[0],
1160                                     attr = arguments[1],
1161                                     data = arguments[2],
1162                                     elem;
1163
1164                                 if (!(attr instanceof Object) || Array.isArray(attr))
1165                                         data = attr, attr = null;
1166
1167                                 if (Array.isArray(html)) {
1168                                         elem = document.createDocumentFragment();
1169                                         for (var i = 0; i < html.length; i++)
1170                                                 elem.appendChild(this.create(html[i]));
1171                                 }
1172                                 else if (this.elem(html)) {
1173                                         elem = html;
1174                                 }
1175                                 else if (html.charCodeAt(0) === 60) {
1176                                         elem = this.parse(html);
1177                                 }
1178                                 else {
1179                                         elem = document.createElement(html);
1180                                 }
1181
1182                                 if (!elem)
1183                                         return null;
1184
1185                                 this.attr(elem, attr);
1186                                 this.append(elem, data);
1187
1188                                 return elem;
1189                         },
1190
1191                         registry: {},
1192
1193                         data: function(node, key, val) {
1194                                 var id = node.getAttribute('data-idref');
1195
1196                                 /* clear all data */
1197                                 if (arguments.length > 1 && key == null) {
1198                                         if (id != null) {
1199                                                 node.removeAttribute('data-idref');
1200                                                 val = this.registry[id]
1201                                                 delete this.registry[id];
1202                                                 return val;
1203                                         }
1204
1205                                         return null;
1206                                 }
1207
1208                                 /* clear a key */
1209                                 else if (arguments.length > 2 && key != null && val == null) {
1210                                         if (id != null) {
1211                                                 val = this.registry[id][key];
1212                                                 delete this.registry[id][key];
1213                                                 return val;
1214                                         }
1215
1216                                         return null;
1217                                 }
1218
1219                                 /* set a key */
1220                                 else if (arguments.length > 2 && key != null && val != null) {
1221                                         if (id == null) {
1222                                                 do { id = Math.floor(Math.random() * 0xffffffff).toString(16) }
1223                                                 while (this.registry.hasOwnProperty(id));
1224
1225                                                 node.setAttribute('data-idref', id);
1226                                                 this.registry[id] = {};
1227                                         }
1228
1229                                         return (this.registry[id][key] = val);
1230                                 }
1231
1232                                 /* get all data */
1233                                 else if (arguments.length == 1) {
1234                                         if (id != null)
1235                                                 return this.registry[id];
1236
1237                                         return null;
1238                                 }
1239
1240                                 /* get a key */
1241                                 else if (arguments.length == 2) {
1242                                         if (id != null)
1243                                                 return this.registry[id][key];
1244                                 }
1245
1246                                 return null;
1247                         },
1248
1249                         bindClassInstance: function(node, inst) {
1250                                 if (!(inst instanceof Class))
1251                                         L.error('TypeError', 'Argument must be a class instance');
1252
1253                                 return this.data(node, '_class', inst);
1254                         },
1255
1256                         findClassInstance: function(node) {
1257                                 var inst = null;
1258
1259                                 do {
1260                                         inst = this.data(node, '_class');
1261                                         node = node.parentNode;
1262                                 }
1263                                 while (!(inst instanceof Class) && node != null);
1264
1265                                 return inst;
1266                         },
1267
1268                         callClassMethod: function(node, method /*, ... */) {
1269                                 var inst = this.findClassInstance(node);
1270
1271                                 if (inst == null || typeof(inst[method]) != 'function')
1272                                         return null;
1273
1274                                 return inst[method].apply(inst, inst.varargs(arguments, 2));
1275                         },
1276
1277                         isEmpty: function(node, ignoreFn) {
1278                                 for (var child = node.firstElementChild; child != null; child = child.nextElementSibling)
1279                                         if (!child.classList.contains('hidden') && (!ignoreFn || !ignoreFn(child)))
1280                                                 return false;
1281
1282                                 return true;
1283                         }
1284                 }),
1285
1286                 Poll: Poll,
1287                 Class: Class,
1288                 Request: Request,
1289
1290                 view: Class.extend({
1291                         __name__: 'LuCI.View',
1292
1293                         __init__: function() {
1294                                 var vp = document.getElementById('view');
1295
1296                                 L.dom.content(vp, E('div', { 'class': 'spinning' }, _('Loading view…')));
1297
1298                                 return Promise.resolve(this.load())
1299                                         .then(L.bind(this.render, this))
1300                                         .then(L.bind(function(nodes) {
1301                                                 var vp = document.getElementById('view');
1302
1303                                                 L.dom.content(vp, nodes);
1304                                                 L.dom.append(vp, this.addFooter());
1305                                         }, this)).catch(L.error);
1306                         },
1307
1308                         load: function() {},
1309                         render: function() {},
1310
1311                         handleSave: function(ev) {
1312                                 var tasks = [];
1313
1314                                 document.getElementById('maincontent')
1315                                         .querySelectorAll('.cbi-map').forEach(function(map) {
1316                                                 tasks.push(L.dom.callClassMethod(map, 'save'));
1317                                         });
1318
1319                                 return Promise.all(tasks);
1320                         },
1321
1322                         handleSaveApply: function(ev) {
1323                                 return this.handleSave(ev).then(function() {
1324                                         L.ui.changes.apply(true);
1325                                 });
1326                         },
1327
1328                         handleReset: function(ev) {
1329                                 var tasks = [];
1330
1331                                 document.getElementById('maincontent')
1332                                         .querySelectorAll('.cbi-map').forEach(function(map) {
1333                                                 tasks.push(L.dom.callClassMethod(map, 'reset'));
1334                                         });
1335
1336                                 return Promise.all(tasks);
1337                         },
1338
1339                         addFooter: function() {
1340                                 var footer = E([]),
1341                                     mc = document.getElementById('maincontent');
1342
1343                                 if (mc.querySelector('.cbi-map')) {
1344                                         footer.appendChild(E('div', { 'class': 'cbi-page-actions' }, [
1345                                                 E('button', {
1346                                                         'class': 'cbi-button cbi-button-apply',
1347                                                         'click': L.ui.createHandlerFn(this, 'handleSaveApply')
1348                                                 }, _('Save & Apply')), ' ',
1349                                                 E('button', {
1350                                                         'class': 'cbi-button cbi-button-save',
1351                                                         'click': L.ui.createHandlerFn(this, 'handleSave')
1352                                                 }, _('Save')), ' ',
1353                                                 E('button', {
1354                                                         'class': 'cbi-button cbi-button-reset',
1355                                                         'click': L.ui.createHandlerFn(this, 'handleReset')
1356                                                 }, _('Reset'))
1357                                         ]));
1358                                 }
1359
1360                                 return footer;
1361                         }
1362                 })
1363         });
1364
1365         var XHR = Class.extend({
1366                 __name__: 'LuCI.XHR',
1367                 __init__: function() {
1368                         if (window.console && console.debug)
1369                                 console.debug('Direct use XHR() is deprecated, please use L.Request instead');
1370                 },
1371
1372                 _response: function(cb, res, json, duration) {
1373                         if (this.active)
1374                                 cb(res, json, duration);
1375                         delete this.active;
1376                 },
1377
1378                 get: function(url, data, callback, timeout) {
1379                         this.active = true;
1380                         L.get(url, data, this._response.bind(this, callback), timeout);
1381                 },
1382
1383                 post: function(url, data, callback, timeout) {
1384                         this.active = true;
1385                         L.post(url, data, this._response.bind(this, callback), timeout);
1386                 },
1387
1388                 cancel: function() { delete this.active },
1389                 busy: function() { return (this.active === true) },
1390                 abort: function() {},
1391                 send_form: function() { L.error('InternalError', 'Not implemented') },
1392         });
1393
1394         XHR.get = function() { return window.L.get.apply(window.L, arguments) };
1395         XHR.post = function() { return window.L.post.apply(window.L, arguments) };
1396         XHR.poll = function() { return window.L.poll.apply(window.L, arguments) };
1397         XHR.stop = Request.poll.remove.bind(Request.poll);
1398         XHR.halt = Request.poll.stop.bind(Request.poll);
1399         XHR.run = Request.poll.start.bind(Request.poll);
1400         XHR.running = Request.poll.active.bind(Request.poll);
1401
1402         window.XHR = XHR;
1403         window.LuCI = LuCI;
1404 })(window, document);