1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
8 |
|
9 |
|
10 |
|
11 |
|
12 |
|
13 |
|
14 | var Url = require("url")
|
15 | , spawn = require("child_process").spawn
|
16 | , fs = require('fs');
|
17 |
|
18 | exports.XMLHttpRequest = function() {
|
19 | |
20 |
|
21 |
|
22 | var self = this;
|
23 | var http = require('http');
|
24 | var https = require('https');
|
25 |
|
26 |
|
27 | var client;
|
28 | var request;
|
29 | var response;
|
30 |
|
31 |
|
32 | var settings = {};
|
33 |
|
34 |
|
35 |
|
36 | var disableHeaderCheck = false;
|
37 |
|
38 |
|
39 | var defaultHeaders = {
|
40 | "User-Agent": "node-XMLHttpRequest",
|
41 | "Accept": "*/*",
|
42 | };
|
43 |
|
44 | var headers = defaultHeaders;
|
45 |
|
46 |
|
47 |
|
48 |
|
49 | var forbiddenRequestHeaders = [
|
50 | "accept-charset",
|
51 | "accept-encoding",
|
52 | "access-control-request-headers",
|
53 | "access-control-request-method",
|
54 | "connection",
|
55 | "content-length",
|
56 | "content-transfer-encoding",
|
57 | "cookie",
|
58 | "cookie2",
|
59 | "date",
|
60 | "expect",
|
61 | "host",
|
62 | "keep-alive",
|
63 | "origin",
|
64 | "referer",
|
65 | "te",
|
66 | "trailer",
|
67 | "transfer-encoding",
|
68 | "upgrade",
|
69 | "via"
|
70 | ];
|
71 |
|
72 |
|
73 | var forbiddenRequestMethods = [
|
74 | "TRACE",
|
75 | "TRACK",
|
76 | "CONNECT"
|
77 | ];
|
78 |
|
79 |
|
80 | var sendFlag = false;
|
81 |
|
82 | var errorFlag = false;
|
83 |
|
84 |
|
85 | var listeners = {};
|
86 |
|
87 | |
88 |
|
89 |
|
90 |
|
91 | this.UNSENT = 0;
|
92 | this.OPENED = 1;
|
93 | this.HEADERS_RECEIVED = 2;
|
94 | this.LOADING = 3;
|
95 | this.DONE = 4;
|
96 |
|
97 | |
98 |
|
99 |
|
100 |
|
101 |
|
102 | this.readyState = this.UNSENT;
|
103 |
|
104 |
|
105 | this.onreadystatechange = null;
|
106 |
|
107 |
|
108 | this.responseText = "";
|
109 | this.responseXML = "";
|
110 | this.status = null;
|
111 | this.statusText = null;
|
112 |
|
113 | |
114 |
|
115 |
|
116 |
|
117 | |
118 |
|
119 |
|
120 |
|
121 |
|
122 |
|
123 | var isAllowedHttpHeader = function(header) {
|
124 | return disableHeaderCheck || (header && forbiddenRequestHeaders.indexOf(header.toLowerCase()) === -1);
|
125 | };
|
126 |
|
127 | |
128 |
|
129 |
|
130 |
|
131 |
|
132 |
|
133 | var isAllowedHttpMethod = function(method) {
|
134 | return (method && forbiddenRequestMethods.indexOf(method) === -1);
|
135 | };
|
136 |
|
137 | |
138 |
|
139 |
|
140 |
|
141 | |
142 |
|
143 |
|
144 |
|
145 |
|
146 |
|
147 |
|
148 |
|
149 |
|
150 | this.open = function(method, url, async, user, password) {
|
151 | this.abort();
|
152 | errorFlag = false;
|
153 |
|
154 |
|
155 | if (!isAllowedHttpMethod(method)) {
|
156 | throw "SecurityError: Request method not allowed";
|
157 | return;
|
158 | }
|
159 |
|
160 | settings = {
|
161 | "method": method,
|
162 | "url": url.toString(),
|
163 | "async": (typeof async !== "boolean" ? true : async),
|
164 | "user": user || null,
|
165 | "password": password || null
|
166 | };
|
167 |
|
168 | setState(this.OPENED);
|
169 | };
|
170 |
|
171 | |
172 |
|
173 |
|
174 |
|
175 |
|
176 |
|
177 | this.setDisableHeaderCheck = function(state) {
|
178 | disableHeaderCheck = state;
|
179 | }
|
180 |
|
181 | |
182 |
|
183 |
|
184 |
|
185 |
|
186 |
|
187 | this.setRequestHeader = function(header, value) {
|
188 | if (this.readyState != this.OPENED) {
|
189 | throw "INVALID_STATE_ERR: setRequestHeader can only be called when state is OPEN";
|
190 | }
|
191 | if (!isAllowedHttpHeader(header)) {
|
192 | console.warn('Refused to set unsafe header "' + header + '"');
|
193 | return;
|
194 | }
|
195 | if (sendFlag) {
|
196 | throw "INVALID_STATE_ERR: send flag is true";
|
197 | }
|
198 | headers[header] = value;
|
199 | };
|
200 |
|
201 | |
202 |
|
203 |
|
204 |
|
205 |
|
206 |
|
207 | this.getResponseHeader = function(header) {
|
208 | if (typeof header === "string"
|
209 | && this.readyState > this.OPENED
|
210 | && response.headers[header.toLowerCase()]
|
211 | && !errorFlag
|
212 | ) {
|
213 | return response.headers[header.toLowerCase()];
|
214 | }
|
215 |
|
216 | return null;
|
217 | };
|
218 |
|
219 | |
220 |
|
221 |
|
222 |
|
223 |
|
224 | this.getAllResponseHeaders = function() {
|
225 | if (this.readyState < this.HEADERS_RECEIVED || errorFlag) {
|
226 | return "";
|
227 | }
|
228 | var result = "";
|
229 |
|
230 | for (var i in response.headers) {
|
231 |
|
232 | if (i !== "set-cookie" && i !== "set-cookie2") {
|
233 | result += i + ": " + response.headers[i] + "\r\n";
|
234 | }
|
235 | }
|
236 | return result.substr(0, result.length - 2);
|
237 | };
|
238 |
|
239 | |
240 |
|
241 |
|
242 |
|
243 |
|
244 | this.getAllResponseHeadersList = function() {
|
245 | return response.headers;
|
246 | };
|
247 |
|
248 | |
249 |
|
250 |
|
251 |
|
252 |
|
253 |
|
254 | this.getRequestHeader = function(name) {
|
255 |
|
256 | if (typeof name === "string" && headers[name]) {
|
257 | return headers[name];
|
258 | }
|
259 |
|
260 | return "";
|
261 | }
|
262 |
|
263 | |
264 |
|
265 |
|
266 |
|
267 |
|
268 | this.send = function(data) {
|
269 | if (this.readyState != this.OPENED) {
|
270 | throw "INVALID_STATE_ERR: connection must be opened before send() is called";
|
271 | }
|
272 |
|
273 | if (sendFlag) {
|
274 | throw "INVALID_STATE_ERR: send has already been called";
|
275 | }
|
276 |
|
277 | var ssl = false, local = false;
|
278 | var url = Url.parse(settings.url);
|
279 |
|
280 |
|
281 | switch (url.protocol) {
|
282 | case 'https:':
|
283 | ssl = true;
|
284 |
|
285 | case 'http:':
|
286 | var host = url.hostname;
|
287 | break;
|
288 |
|
289 | case 'file:':
|
290 | local = true;
|
291 | break;
|
292 |
|
293 | case undefined:
|
294 | case '':
|
295 | var host = "localhost";
|
296 | break;
|
297 |
|
298 | default:
|
299 | throw "Protocol not supported.";
|
300 | }
|
301 |
|
302 |
|
303 | if (local) {
|
304 | if (settings.method !== "GET") {
|
305 | throw "XMLHttpRequest: Only GET method is supported";
|
306 | }
|
307 |
|
308 | if (settings.async) {
|
309 | fs.readFile(url.pathname, 'utf8', function(error, data) {
|
310 | if (error) {
|
311 | self.handleError(error);
|
312 | } else {
|
313 | self.status = 200;
|
314 | self.responseText = data;
|
315 | setState(self.DONE);
|
316 | }
|
317 | });
|
318 | } else {
|
319 | try {
|
320 | this.responseText = fs.readFileSync(url.pathname, 'utf8');
|
321 | this.status = 200;
|
322 | setState(self.DONE);
|
323 | } catch(e) {
|
324 | this.handleError(e);
|
325 | }
|
326 | }
|
327 |
|
328 | return;
|
329 | }
|
330 |
|
331 |
|
332 |
|
333 | var port = url.port || (ssl ? 443 : 80);
|
334 |
|
335 | var uri = url.pathname + (url.search ? url.search : '');
|
336 |
|
337 |
|
338 | headers["Host"] = host;
|
339 | if (!((ssl && port === 443) || port === 80)) {
|
340 | headers["Host"] += ':' + url.port;
|
341 | }
|
342 |
|
343 |
|
344 | if (settings.user) {
|
345 | if (typeof settings.password == "undefined") {
|
346 | settings.password = "";
|
347 | }
|
348 | var authBuf = new Buffer(settings.user + ":" + settings.password);
|
349 | headers["Authorization"] = "Basic " + authBuf.toString("base64");
|
350 | }
|
351 |
|
352 |
|
353 | if (settings.method === "GET" || settings.method === "HEAD") {
|
354 | data = null;
|
355 | } else if (data) {
|
356 | headers["Content-Length"] = Buffer.byteLength(data);
|
357 |
|
358 | if (!headers["Content-Type"]) {
|
359 | headers["Content-Type"] = "text/plain;charset=UTF-8";
|
360 | }
|
361 | } else if (settings.method === "POST") {
|
362 |
|
363 |
|
364 | headers["Content-Length"] = 0;
|
365 | }
|
366 |
|
367 | var options = {
|
368 | host: host,
|
369 | port: port,
|
370 | path: uri,
|
371 | method: settings.method,
|
372 | headers: headers,
|
373 | agent: false
|
374 | };
|
375 |
|
376 |
|
377 | errorFlag = false;
|
378 |
|
379 |
|
380 | if (settings.async) {
|
381 |
|
382 | var doRequest = ssl ? https.request : http.request;
|
383 |
|
384 |
|
385 | sendFlag = true;
|
386 |
|
387 |
|
388 | self.dispatchEvent("readystatechange");
|
389 |
|
390 |
|
391 | request = doRequest(options, function(resp) {
|
392 | response = resp;
|
393 | response.setEncoding("utf8");
|
394 |
|
395 | setState(self.HEADERS_RECEIVED);
|
396 | self.status = response.statusCode;
|
397 |
|
398 | response.on('data', function(chunk) {
|
399 |
|
400 | if (chunk) {
|
401 | self.responseText += chunk;
|
402 | }
|
403 |
|
404 | if (sendFlag) {
|
405 | setState(self.LOADING);
|
406 | }
|
407 | });
|
408 |
|
409 | response.on('end', function() {
|
410 | if (sendFlag) {
|
411 |
|
412 | setState(self.DONE);
|
413 | sendFlag = false;
|
414 | }
|
415 | });
|
416 |
|
417 | response.on('error', function(error) {
|
418 | self.handleError(error);
|
419 | });
|
420 | }).on('error', function(error) {
|
421 | self.handleError(error);
|
422 | });
|
423 |
|
424 |
|
425 | if (data) {
|
426 | request.write(data);
|
427 | }
|
428 |
|
429 | request.end();
|
430 |
|
431 | self.dispatchEvent("loadstart");
|
432 | } else {
|
433 |
|
434 | var syncFile = ".node-xmlhttprequest-sync-" + process.pid;
|
435 | fs.writeFileSync(syncFile, "", "utf8");
|
436 |
|
437 | var execString = "var http = require('http'), https = require('https'), fs = require('fs');"
|
438 | + "var doRequest = http" + (ssl ? "s" : "") + ".request;"
|
439 | + "var options = " + JSON.stringify(options) + ";"
|
440 | + "var responseText = '';"
|
441 | + "var req = doRequest(options, function(response) {"
|
442 | + "response.setEncoding('utf8');"
|
443 | + "response.on('data', function(chunk) {"
|
444 | + "responseText += chunk;"
|
445 | + "});"
|
446 | + "response.on('end', function() {"
|
447 | + "fs.writeFileSync('" + syncFile + "', 'NODE-XMLHTTPREQUEST-STATUS:' + response.statusCode + ',' + responseText, 'utf8');"
|
448 | + "});"
|
449 | + "response.on('error', function(error) {"
|
450 | + "fs.writeFileSync('" + syncFile + "', 'NODE-XMLHTTPREQUEST-ERROR:' + JSON.stringify(error), 'utf8');"
|
451 | + "});"
|
452 | + "}).on('error', function(error) {"
|
453 | + "fs.writeFileSync('" + syncFile + "', 'NODE-XMLHTTPREQUEST-ERROR:' + JSON.stringify(error), 'utf8');"
|
454 | + "});"
|
455 | + (data ? "req.write('" + data.replace(/'/g, "\\'") + "');":"")
|
456 | + "req.end();";
|
457 |
|
458 | syncProc = spawn(process.argv[0], ["-e", execString]);
|
459 | while((self.responseText = fs.readFileSync(syncFile, 'utf8')) == "") {
|
460 |
|
461 | }
|
462 |
|
463 | syncProc.stdin.end();
|
464 |
|
465 | fs.unlinkSync(syncFile);
|
466 | if (self.responseText.match(/^NODE-XMLHTTPREQUEST-ERROR:/)) {
|
467 |
|
468 | var errorObj = self.responseText.replace(/^NODE-XMLHTTPREQUEST-ERROR:/, "");
|
469 | self.handleError(errorObj);
|
470 | } else {
|
471 |
|
472 | self.status = self.responseText.replace(/^NODE-XMLHTTPREQUEST-STATUS:([0-9]*),.*/, "$1");
|
473 | self.responseText = self.responseText.replace(/^NODE-XMLHTTPREQUEST-STATUS:[0-9]*,(.*)/, "$1");
|
474 | setState(self.DONE);
|
475 | }
|
476 | }
|
477 | };
|
478 |
|
479 | |
480 |
|
481 |
|
482 | this.handleError = function(error) {
|
483 | this.status = 503;
|
484 | this.statusText = error;
|
485 | this.responseText = error.stack;
|
486 | errorFlag = true;
|
487 | setState(this.DONE);
|
488 | };
|
489 |
|
490 | |
491 |
|
492 |
|
493 | this.abort = function() {
|
494 | if (request) {
|
495 | request.abort();
|
496 | request = null;
|
497 | }
|
498 |
|
499 | headers = defaultHeaders;
|
500 | this.responseText = "";
|
501 | this.responseXML = "";
|
502 |
|
503 | errorFlag = true;
|
504 |
|
505 | if (this.readyState !== this.UNSENT
|
506 | && (this.readyState !== this.OPENED || sendFlag)
|
507 | && this.readyState !== this.DONE) {
|
508 | sendFlag = false;
|
509 | setState(this.DONE);
|
510 | }
|
511 | this.readyState = this.UNSENT;
|
512 | };
|
513 |
|
514 | |
515 |
|
516 |
|
517 | this.addEventListener = function(event, callback) {
|
518 | if (!(event in listeners)) {
|
519 | listeners[event] = [];
|
520 | }
|
521 |
|
522 | listeners[event].push(callback);
|
523 | };
|
524 |
|
525 | |
526 |
|
527 |
|
528 |
|
529 | this.removeEventListener = function(event, callback) {
|
530 | if (event in listeners) {
|
531 |
|
532 | listeners[event] = listeners[event].filter(function(ev) {
|
533 | return ev !== callback;
|
534 | });
|
535 | }
|
536 | };
|
537 |
|
538 | |
539 |
|
540 |
|
541 | this.dispatchEvent = function(event) {
|
542 | if (typeof self["on" + event] === "function") {
|
543 | self["on" + event]();
|
544 | }
|
545 | if (event in listeners) {
|
546 | for (var i = 0, len = listeners[event].length; i < len; i++) {
|
547 | listeners[event][i].call(self);
|
548 | }
|
549 | }
|
550 | };
|
551 |
|
552 | |
553 |
|
554 |
|
555 |
|
556 |
|
557 | var setState = function(state) {
|
558 | if (self.readyState !== state) {
|
559 | self.readyState = state;
|
560 |
|
561 | if (settings.async || self.readyState < self.OPENED || self.readyState === self.DONE) {
|
562 | self.dispatchEvent("readystatechange");
|
563 | }
|
564 |
|
565 | if (self.readyState === self.DONE && !errorFlag) {
|
566 | self.dispatchEvent("load");
|
567 |
|
568 | self.dispatchEvent("loadend");
|
569 | }
|
570 | }
|
571 | };
|
572 | }; |
\ | No newline at end of file |