OLD | NEW |
---|---|
(Empty) | |
1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "content/browser/devtools/devtools_url_interceptor_request_job.h" | |
6 | |
7 #include "base/memory/ptr_util.h" | |
8 #include "base/strings/stringprintf.h" | |
9 #include "content/browser/devtools/protocol/network_handler.h" | |
10 #include "net/base/elements_upload_data_stream.h" | |
11 #include "net/base/io_buffer.h" | |
12 #include "net/base/upload_bytes_element_reader.h" | |
13 #include "net/base/upload_element_reader.h" | |
14 #include "net/cert/cert_status_flags.h" | |
15 #include "net/http/http_response_headers.h" | |
16 #include "net/http/http_util.h" | |
17 #include "net/url_request/url_request_context.h" | |
18 | |
19 namespace content { | |
20 | |
21 using CommandStatus = DevToolsURLRequestInterceptor::CommandStatus; | |
22 | |
23 namespace { | |
24 class ProxyUploadBytesElementReader : public net::UploadElementReader { | |
Sami
2017/05/19 17:15:43
bikeshed: ProxyUploadElementReader? (not sure what
alex clarke (OOO till 29th)
2017/05/23 15:46:55
Done.
| |
25 public: | |
26 explicit ProxyUploadBytesElementReader(net::UploadElementReader* reader) | |
27 : reader_(reader) {} | |
28 | |
29 ~ProxyUploadBytesElementReader() override {} | |
30 | |
31 // net::UploadElementReader overrides: | |
32 int Init(const net::CompletionCallback& callback) override { | |
33 return reader_->Init(callback); | |
34 } | |
35 | |
36 uint64_t GetContentLength() const override { | |
37 return reader_->GetContentLength(); | |
38 } | |
39 | |
40 uint64_t BytesRemaining() const override { return reader_->BytesRemaining(); } | |
41 | |
42 bool IsInMemory() const override { return reader_->IsInMemory(); } | |
43 | |
44 int Read(net::IOBuffer* buf, | |
45 int buf_length, | |
46 const net::CompletionCallback& callback) override { | |
47 return reader_->Read(buf, buf_length, callback); | |
48 } | |
49 | |
50 private: | |
51 net::UploadElementReader* reader_; // NOT OWNED | |
52 | |
53 DISALLOW_COPY_AND_ASSIGN(ProxyUploadBytesElementReader); | |
54 }; | |
55 | |
56 std::unique_ptr<net::UploadElementReader> GetUploadData( | |
57 net::URLRequest* request) { | |
58 if (!request->has_upload()) | |
59 return nullptr; | |
60 | |
61 const net::UploadDataStream* stream = request->get_upload(); | |
62 if (!stream->GetElementReaders()) | |
63 return nullptr; | |
64 | |
65 DCHECK_EQ(1u, stream->GetElementReaders()->size()); | |
66 return base::MakeUnique<ProxyUploadBytesElementReader>( | |
67 (*stream->GetElementReaders())[0].get()); | |
68 } | |
69 } // namespace | |
70 | |
71 DevToolsURLInterceptorRequestJob::DevToolsURLInterceptorRequestJob( | |
72 base::WeakPtr<DevToolsURLRequestInterceptor::State> | |
73 devtools_url_request_interceptor_state, | |
74 const std::string& intercept_id, | |
75 net::URLRequest* original_request, | |
76 net::NetworkDelegate* original_network_delegate, | |
77 base::WeakPtr<protocol::NetworkHandler> network_handler, | |
78 bool is_redirect) | |
79 : net::URLRequestJob(original_request, original_network_delegate), | |
80 devtools_url_request_interceptor_state_( | |
81 devtools_url_request_interceptor_state), | |
82 request_details_(original_request->url(), | |
83 original_request->method(), | |
84 GetUploadData(original_request), | |
85 original_request->extra_request_headers(), | |
86 original_request->priority(), | |
87 original_request->context()), | |
88 intercept_id_(intercept_id), | |
89 network_handler_(network_handler), | |
90 io_thread_task_runner_( | |
91 BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)), | |
92 is_redirect_(is_redirect), | |
93 weak_ptr_factory_(this) { | |
94 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
95 devtools_url_request_interceptor_state_->RegisterJob(this, intercept_id_); | |
96 } | |
97 | |
98 DevToolsURLInterceptorRequestJob::~DevToolsURLInterceptorRequestJob() { | |
99 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
100 if (devtools_url_request_interceptor_state_) { | |
101 devtools_url_request_interceptor_state_->UnregisterJob(intercept_id_); | |
102 } | |
103 } | |
104 | |
105 // net::URLRequestJob implementation: | |
106 void DevToolsURLInterceptorRequestJob::SetExtraRequestHeaders( | |
107 const net::HttpRequestHeaders& headers) { | |
108 request_details_.extra_request_headers = headers; | |
109 } | |
110 | |
111 void DevToolsURLInterceptorRequestJob::Start() { | |
112 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
113 if (is_redirect_) { | |
114 // If this is a fetch in response to a redirect, we have already sent the | |
115 // Network.InterceptedRedirectEvent and the user opted to allow it so | |
116 // there's no need to send Network.InterceptedRequestEvent. We can just | |
117 // start the SubRequest. | |
118 sub_request_.reset(new SubRequest(request_details_, this)); | |
119 } else { | |
120 waiting_for_user_response_ = true; | |
121 BrowserThread::PostTask( | |
122 BrowserThread::UI, FROM_HERE, | |
123 base::Bind(&DevToolsURLInterceptorRequestJob:: | |
124 SendInterceptedRequestEventOnUiThread, | |
125 weak_ptr_factory_.GetWeakPtr())); | |
126 } | |
127 } | |
128 | |
129 void DevToolsURLInterceptorRequestJob::SendInterceptedRequestEventOnUiThread() { | |
130 DCHECK_CURRENTLY_ON(BrowserThread::UI); | |
131 if (network_handler_) { | |
132 network_handler_->frontend()->InterceptedRequest( | |
133 intercept_id_, | |
134 protocol::NetworkHandler::CreateRequestFromURLRequest(request())); | |
135 } | |
136 } | |
137 | |
138 void DevToolsURLInterceptorRequestJob::Kill() { | |
139 if (sub_request_) | |
140 sub_request_->Cancel(); | |
141 | |
142 URLRequestJob::Kill(); | |
143 } | |
144 | |
145 int DevToolsURLInterceptorRequestJob::ReadRawData(net::IOBuffer* buf, | |
146 int buf_size) { | |
147 if (sub_request_) { | |
148 int size = sub_request_->request()->Read(buf, buf_size); | |
149 return size; | |
150 } else { | |
151 CHECK(mock_response_details_); | |
152 return mock_response_details_->ReadRawData(buf, buf_size); | |
153 } | |
154 } | |
155 | |
156 int DevToolsURLInterceptorRequestJob::GetResponseCode() const { | |
157 if (sub_request_) { | |
158 return sub_request_->request()->GetResponseCode(); | |
159 } else { | |
160 CHECK(mock_response_details_); | |
161 return mock_response_details_->response_headers()->response_code(); | |
162 } | |
163 } | |
164 | |
165 void DevToolsURLInterceptorRequestJob::GetResponseInfo( | |
166 net::HttpResponseInfo* info) { | |
167 // NOTE this can get called during URLRequestJob::NotifyStartError in which | |
168 // case we might not have either a sub request or a mock response. | |
169 if (sub_request_) { | |
170 *info = sub_request_->request()->response_info(); | |
171 } else if (mock_response_details_) { | |
172 info->headers = mock_response_details_->response_headers().get(); | |
173 } | |
174 } | |
175 | |
176 const net::HttpResponseHeaders* | |
177 DevToolsURLInterceptorRequestJob::GetHttpResponseHeaders() const { | |
178 if (sub_request_) { | |
179 net::URLRequest* request = sub_request_->request(); | |
180 return request->response_info().headers.get(); | |
181 } | |
182 CHECK(mock_response_details_); | |
183 return mock_response_details_->response_headers().get(); | |
184 } | |
185 | |
186 bool DevToolsURLInterceptorRequestJob::GetMimeType( | |
187 std::string* mime_type) const { | |
188 const net::HttpResponseHeaders* response_headers = GetHttpResponseHeaders(); | |
189 if (!response_headers) | |
190 return false; | |
191 return response_headers->GetMimeType(mime_type); | |
192 } | |
193 | |
194 bool DevToolsURLInterceptorRequestJob::GetCharset(std::string* charset) { | |
195 const net::HttpResponseHeaders* response_headers = GetHttpResponseHeaders(); | |
196 if (!response_headers) | |
197 return false; | |
198 return response_headers->GetCharset(charset); | |
199 } | |
200 | |
201 void DevToolsURLInterceptorRequestJob::GetLoadTimingInfo( | |
202 net::LoadTimingInfo* load_timing_info) const { | |
203 if (sub_request_) { | |
204 sub_request_->request()->GetLoadTimingInfo(load_timing_info); | |
205 } else { | |
206 CHECK(mock_response_details_); | |
207 // TODO(alexclarke): Investigate setting the other members too where | |
208 // possible. | |
209 load_timing_info->receive_headers_end = | |
210 mock_response_details_->response_time(); | |
211 } | |
212 } | |
213 | |
214 void DevToolsURLInterceptorRequestJob::OnAuthRequired( | |
215 net::URLRequest* request, | |
216 net::AuthChallengeInfo* auth_info) { | |
217 DCHECK(sub_request_); | |
218 DCHECK_EQ(request, sub_request_->request()); | |
219 // TODO(alexclarke): Implement this. | |
220 LOG(WARNING) << "Auth required to fetch URL, aborting."; | |
221 request->CancelAuth(); | |
222 DispatchError(net::ERR_NOT_IMPLEMENTED); | |
223 } | |
224 | |
225 void DevToolsURLInterceptorRequestJob::OnResponseStarted( | |
226 net::URLRequest* request, | |
227 int net_error) { | |
228 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
229 DCHECK(sub_request_); | |
230 DCHECK_EQ(request, sub_request_->request()); | |
231 DCHECK_NE(net::ERR_IO_PENDING, net_error); | |
232 | |
233 if (net_error != net::OK) { | |
234 sub_request_->Cancel(); | |
235 DispatchError(static_cast<net::Error>(net_error)); | |
236 return; | |
237 } | |
238 | |
239 NotifyHeadersComplete(); | |
240 } | |
241 | |
242 void DevToolsURLInterceptorRequestJob::OnReadCompleted(net::URLRequest* request, | |
243 int num_bytes) { | |
244 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
245 DCHECK_EQ(request, sub_request_->request()); | |
246 | |
247 ReadRawDataComplete(num_bytes); | |
248 } | |
249 | |
250 void DevToolsURLInterceptorRequestJob::OnReceivedRedirect( | |
251 net::URLRequest* request, | |
252 const net::RedirectInfo& redirectinfo, | |
253 bool* defer_redirect) { | |
254 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
255 *defer_redirect = true; | |
256 | |
257 size_t iter = 0; | |
258 std::string header_name; | |
259 std::string header_value; | |
260 std::unique_ptr<protocol::DictionaryValue> headers_dict( | |
261 protocol::DictionaryValue::create()); | |
262 while (request->response_headers()->EnumerateHeaderLines(&iter, &header_name, | |
263 &header_value)) { | |
264 headers_dict->setString(header_name, header_value); | |
265 } | |
266 | |
267 redirect_.reset(new net::RedirectInfo(redirectinfo)); | |
268 sub_request_->Cancel(); | |
269 sub_request_.reset(); | |
270 | |
271 waiting_for_user_response_ = true; | |
272 BrowserThread::PostTask( | |
273 BrowserThread::UI, FROM_HERE, | |
274 base::Bind(&DevToolsURLInterceptorRequestJob:: | |
275 SendInterceptedRedirectEventOnUiThread, | |
276 weak_ptr_factory_.GetWeakPtr(), | |
277 base::Owned(headers_dict.release()), redirectinfo.status_code, | |
278 redirectinfo.new_url.spec())); | |
279 } | |
280 | |
281 void DevToolsURLInterceptorRequestJob::SendInterceptedRedirectEventOnUiThread( | |
282 protocol::DictionaryValue* headers_dict, | |
283 int http_status_code, | |
284 std::string redirect_url) { | |
285 DCHECK_CURRENTLY_ON(BrowserThread::UI); | |
286 return network_handler_->frontend()->InterceptedRedirect( | |
287 intercept_id_, protocol::Object::fromValue(headers_dict, nullptr), | |
288 http_status_code, redirect_url); | |
289 } | |
290 | |
291 void DevToolsURLInterceptorRequestJob::OnSSLCertificateError( | |
292 net::URLRequest* request, | |
293 const net::SSLInfo& ssl_info, | |
294 bool fatal) { | |
295 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
296 DCHECK(sub_request_); | |
297 DCHECK_EQ(request, sub_request_->request()); | |
298 | |
299 // Revocation check failures are not fatal. | |
300 if (net::IsCertStatusMinorError(ssl_info.cert_status)) { | |
301 request->ContinueDespiteLastError(); | |
302 return; | |
303 } | |
304 LOG(WARNING) << "SSL certificate error, aborting."; | |
305 | |
306 // Certificate errors are in same space as net errors. | |
307 sub_request_->Cancel(); | |
308 DispatchError(static_cast<net::Error>( | |
309 net::MapCertStatusToNetError(ssl_info.cert_status))); | |
310 } | |
311 | |
312 CommandStatus DevToolsURLInterceptorRequestJob::AllowRequest() { | |
313 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
314 if (!waiting_for_user_response_) | |
315 return CommandStatus::CommandAlreadyProcessed; | |
316 waiting_for_user_response_ = false; | |
317 | |
318 if (redirect_) { | |
319 // NOTE we don't append the text form of the status code because | |
320 // net::HttpResponseHeaders doesn't need that. | |
321 std::string raw_headers = | |
322 base::StringPrintf("HTTP/1.1 %d", redirect_->status_code); | |
323 raw_headers.append(1, '\0'); | |
324 raw_headers.append("Location: "); | |
325 raw_headers.append(redirect_->new_url.spec()); | |
326 raw_headers.append(2, '\0'); | |
327 mock_response_details_.reset(new MockResponseDetails( | |
328 make_scoped_refptr(new net::HttpResponseHeaders(raw_headers)), "", 0, | |
329 base::TimeTicks::Now())); | |
330 redirect_.reset(); | |
331 | |
332 DCHECK(devtools_url_request_interceptor_state_); | |
333 devtools_url_request_interceptor_state_->ExpectRequestAfterRedirect( | |
334 request(), intercept_id_); | |
335 NotifyHeadersComplete(); | |
336 } else { | |
337 // The reason we start a sub request is because we are in full control of it | |
338 // and can choose to ignore it if, for example, the fetch encounters a | |
339 // redirect that the user chooses to replace with a mock response. | |
340 sub_request_.reset(new SubRequest(request_details_, this)); | |
341 } | |
342 return CommandStatus::OK; | |
343 } | |
344 | |
345 CommandStatus DevToolsURLInterceptorRequestJob::BlockRequest( | |
346 net::Error error_reason) { | |
347 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
348 if (!waiting_for_user_response_) | |
349 return CommandStatus::CommandAlreadyProcessed; | |
350 waiting_for_user_response_ = false; | |
351 | |
352 DispatchError(error_reason); | |
353 return CommandStatus::OK; | |
354 } | |
355 | |
356 CommandStatus DevToolsURLInterceptorRequestJob::ModifyRequest( | |
357 std::unique_ptr<DevToolsURLRequestInterceptor::Modifications> | |
358 modifications) { | |
359 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
360 if (!waiting_for_user_response_) | |
361 return CommandStatus::CommandAlreadyProcessed; | |
362 waiting_for_user_response_ = false; | |
363 | |
364 // Note this redirect is not visible to the caller by design. If they want a | |
365 // visible redirect they can mock a response with a 302. | |
366 if (modifications->url.isJust()) | |
367 request_details_.url = GURL(modifications->url.fromJust()); | |
368 | |
369 if (modifications->method.isJust()) | |
370 request_details_.method = modifications->method.fromJust(); | |
371 | |
372 if (modifications->post_data.isJust()) { | |
373 const std::string& post_data = modifications->post_data.fromJust(); | |
374 std::vector<char> data(post_data.begin(), post_data.end()); | |
375 request_details_.post_data.reset( | |
376 new net::UploadOwnedBytesElementReader(&data)); | |
377 } | |
378 | |
379 if (modifications->headers.isJust()) { | |
380 request_details_.extra_request_headers.Clear(); | |
381 std::unique_ptr<protocol::DictionaryValue> headers = | |
382 modifications->headers.fromJust()->toValue(); | |
383 for (size_t i = 0; i < headers->size(); i++) { | |
384 std::string value; | |
385 if (headers->at(i).second->asString(&value)) { | |
386 request_details_.extra_request_headers.SetHeader(headers->at(i).first, | |
387 value); | |
388 } | |
389 } | |
390 } | |
391 | |
392 sub_request_.reset(new SubRequest(request_details_, this)); | |
393 return CommandStatus::OK; | |
394 } | |
395 | |
396 CommandStatus DevToolsURLInterceptorRequestJob::MockResponse( | |
397 std::string raw_response) { | |
398 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
399 if (!waiting_for_user_response_) | |
400 return CommandStatus::CommandAlreadyProcessed; | |
401 waiting_for_user_response_ = false; | |
402 | |
403 mock_response_details_.reset( | |
404 new MockResponseDetails(std::move(raw_response), base::TimeTicks::Now())); | |
405 | |
406 std::string value; | |
407 if (mock_response_details_->response_headers()->IsRedirect(&value)) { | |
408 DCHECK(devtools_url_request_interceptor_state_); | |
409 devtools_url_request_interceptor_state_->ExpectRequestAfterRedirect( | |
410 request(), intercept_id_); | |
411 } | |
412 NotifyHeadersComplete(); | |
413 return CommandStatus::OK; | |
414 } | |
415 | |
416 void DevToolsURLInterceptorRequestJob::DispatchError(net::Error reason) { | |
417 DCHECK_NE(reason, net::OK); | |
418 io_thread_task_runner_->PostTask( | |
419 FROM_HERE, | |
420 base::Bind(&DevToolsURLInterceptorRequestJob::NotifyStartError, | |
421 weak_ptr_factory_.GetWeakPtr(), | |
422 net::URLRequestStatus(net::URLRequestStatus::FAILED, reason))); | |
423 } | |
424 | |
425 DevToolsURLInterceptorRequestJob::RequestDetails::RequestDetails( | |
426 const GURL& url, | |
427 const std::string& method, | |
428 std::unique_ptr<net::UploadElementReader> post_data, | |
429 const net::HttpRequestHeaders& extra_request_headers, | |
430 const net::RequestPriority& priority, | |
431 const net::URLRequestContext* url_request_context) | |
432 : url(url), | |
433 method(method), | |
434 post_data(std::move(post_data)), | |
435 extra_request_headers(extra_request_headers), | |
436 priority(priority), | |
437 url_request_context(url_request_context) {} | |
438 | |
439 DevToolsURLInterceptorRequestJob::RequestDetails::~RequestDetails() {} | |
440 | |
441 DevToolsURLInterceptorRequestJob::SubRequest::SubRequest( | |
442 DevToolsURLInterceptorRequestJob::RequestDetails& request_details, | |
443 DevToolsURLInterceptorRequestJob* devtools_interceptor_request_job) | |
444 : devtools_interceptor_request_job_(devtools_interceptor_request_job), | |
445 devtools_url_request_interceptor_state_( | |
446 devtools_interceptor_request_job_ | |
447 ->devtools_url_request_interceptor_state_), | |
448 fetch_in_progress_(true) { | |
449 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
450 request_ = request_details.url_request_context->CreateRequest( | |
451 request_details.url, request_details.priority, | |
452 devtools_interceptor_request_job_), | |
453 request_->set_method(request_details.method); | |
454 request_->SetExtraRequestHeaders(request_details.extra_request_headers); | |
455 | |
456 if (request_details.post_data) { | |
457 request_->set_upload(net::ElementsUploadDataStream::CreateWithReader( | |
458 std::move(request_details.post_data), 0)); | |
459 } | |
460 | |
461 if (!devtools_url_request_interceptor_state_) | |
462 return; | |
463 devtools_url_request_interceptor_state_->RegisterSubRequest(request_.get()); | |
464 request_->Start(); | |
465 } | |
466 | |
467 DevToolsURLInterceptorRequestJob::SubRequest::~SubRequest() { | |
468 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
469 | |
470 if (!devtools_url_request_interceptor_state_) | |
471 return; | |
472 devtools_url_request_interceptor_state_->UnregisterSubRequest(request_.get()); | |
473 } | |
474 | |
475 void DevToolsURLInterceptorRequestJob::SubRequest::Cancel() { | |
476 DCHECK_CURRENTLY_ON(BrowserThread::IO); | |
477 if (!fetch_in_progress_) | |
478 return; | |
479 | |
480 fetch_in_progress_ = false; | |
481 request_->Cancel(); | |
482 } | |
483 | |
484 DevToolsURLInterceptorRequestJob::MockResponseDetails::MockResponseDetails( | |
485 std::string response_bytes, | |
486 base::TimeTicks response_time) | |
487 : response_bytes_(std::move(response_bytes)), | |
488 read_offset_(0), | |
489 response_time_(response_time) { | |
490 int header_size = net::HttpUtil::LocateEndOfHeaders(response_bytes_.c_str(), | |
491 response_bytes_.size()); | |
492 if (header_size == -1) { | |
493 LOG(WARNING) << "Can't find headers in result"; | |
494 response_headers_ = new net::HttpResponseHeaders(""); | |
495 } else { | |
496 response_headers_ = | |
497 new net::HttpResponseHeaders(net::HttpUtil::AssembleRawHeaders( | |
498 response_bytes_.c_str(), header_size)); | |
499 read_offset_ = header_size; | |
500 } | |
501 | |
502 CHECK_LE(read_offset_, response_bytes_.size()); | |
503 } | |
504 | |
505 DevToolsURLInterceptorRequestJob::MockResponseDetails::MockResponseDetails( | |
506 const scoped_refptr<net::HttpResponseHeaders>& response_headers, | |
507 std::string response_bytes, | |
508 size_t read_offset, | |
509 base::TimeTicks response_time) | |
510 : response_headers_(response_headers), | |
511 response_bytes_(std::move(response_bytes)), | |
512 read_offset_(read_offset), | |
513 response_time_(response_time) {} | |
514 | |
515 DevToolsURLInterceptorRequestJob::MockResponseDetails::~MockResponseDetails() {} | |
516 | |
517 int DevToolsURLInterceptorRequestJob::MockResponseDetails::ReadRawData( | |
518 net::IOBuffer* buf, | |
519 int buf_size) { | |
520 size_t bytes_available = response_bytes_.size() - read_offset_; | |
521 size_t bytes_to_copy = | |
522 std::min(static_cast<size_t>(buf_size), bytes_available); | |
523 if (bytes_to_copy > 0) { | |
524 std::memcpy(buf->data(), &response_bytes_.data()[read_offset_], | |
525 bytes_to_copy); | |
526 read_offset_ += bytes_to_copy; | |
527 } | |
528 return bytes_to_copy; | |
529 } | |
530 | |
531 } // namespace content | |
OLD | NEW |