Index: headless/public/util/http_url_fetcher.cc |
diff --git a/headless/public/util/http_url_fetcher.cc b/headless/public/util/http_url_fetcher.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..179c3383a01c16383fed877ad27c73dbb9d50809 |
--- /dev/null |
+++ b/headless/public/util/http_url_fetcher.cc |
@@ -0,0 +1,187 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "headless/public/util/http_url_fetcher.h" |
+ |
+#include "net/base/io_buffer.h" |
+#include "net/cert/cert_status_flags.h" |
+#include "net/url_request/url_request.h" |
+#include "net/url_request/url_request_context.h" |
+ |
+namespace headless { |
+ |
+class HttpUrlFetcher::Delegate : public net::URLRequest::Delegate { |
+ public: |
+ Delegate(const GURL& rewritten_url, |
+ const std::string& method, |
+ const net::HttpRequestHeaders& request_headers, |
+ const net::URLRequestContext* url_request_context, |
+ ResultListener* result_listener); |
+ ~Delegate() override; |
+ |
+ // URLRequest::Delegate methods: |
+ void OnAuthRequired(net::URLRequest* request, |
+ net::AuthChallengeInfo* auth_info) override; |
+ void OnSSLCertificateError(net::URLRequest* request, |
+ const net::SSLInfo& ssl_info, |
+ bool fatal) override; |
+ void OnResponseStarted(net::URLRequest* request, int net_error) override; |
+ void OnReadCompleted(net::URLRequest* request, int num_bytes) override; |
+ |
+ private: |
+ enum { kBufSize = 4096 }; |
+ |
+ bool ConsumeBytesRead(net::URLRequest* request, int num_bytes); |
+ void ReadBody(net::URLRequest* request); |
+ void OnResponseCompleted(net::URLRequest* request, int net_error); |
+ |
+ // Holds the error condition that was hit by the request, or OK. |
+ int result_code_; |
+ |
+ // Buffer that URLRequest writes into. |
+ scoped_refptr<net::IOBuffer> buf_; |
+ |
+ // The HTTP fetch. |
+ std::unique_ptr<net::URLRequest> request_; |
+ |
+ // Holds the bytes read so far. |
+ std::string bytes_read_so_far_; |
+ |
+ // The interface kn which to report any results. |
+ ResultListener* result_listener_; // NOT OWNED. |
+}; |
+ |
+HttpUrlFetcher::Delegate::Delegate( |
+ const GURL& rewritten_url, |
+ const std::string& method, |
+ const net::HttpRequestHeaders& request_headers, |
+ const net::URLRequestContext* url_request_context, |
+ ResultListener* result_listener) |
+ : result_code_(net::OK), |
+ buf_(new net::IOBuffer(kBufSize)), |
+ request_(url_request_context->CreateRequest(rewritten_url, |
+ net::DEFAULT_PRIORITY, |
+ this)), |
+ result_listener_(result_listener) { |
+ request_->set_method(method); |
+ request_->SetExtraRequestHeaders(request_headers); |
+ request_->Start(); |
+} |
+ |
+HttpUrlFetcher::Delegate::~Delegate() {} |
+ |
+void HttpUrlFetcher::Delegate::OnAuthRequired( |
+ net::URLRequest* request, |
+ net::AuthChallengeInfo* auth_info) { |
+ DCHECK_EQ(request, request_.get()); |
+ LOG(WARNING) << "Auth required to fetch URL, aborting."; |
+ result_code_ = net::ERR_NOT_IMPLEMENTED; |
+ request->CancelAuth(); |
+} |
+ |
+void HttpUrlFetcher::Delegate::OnSSLCertificateError( |
+ net::URLRequest* request, |
+ const net::SSLInfo& ssl_info, |
+ bool fatal) { |
+ DCHECK_EQ(request, request_.get()); |
+ |
+ // Revocation check failures are not fatal. |
+ if (net::IsCertStatusMinorError(ssl_info.cert_status)) { |
+ request->ContinueDespiteLastError(); |
+ return; |
+ } |
+ LOG(WARNING) << "SSL certificate error, aborting."; |
+ |
+ // Certificate errors are in same space as net errors. |
+ result_code_ = net::MapCertStatusToNetError(ssl_info.cert_status); |
+ request->Cancel(); |
+} |
+ |
+void HttpUrlFetcher::Delegate::OnResponseStarted(net::URLRequest* request, |
+ int net_error) { |
+ DCHECK_EQ(request, request_.get()); |
+ DCHECK_NE(net::ERR_IO_PENDING, net_error); |
+ |
+ if (net_error != net::OK) { |
+ OnResponseCompleted(request, net_error); |
+ return; |
+ } |
+ |
+ ReadBody(request); |
+} |
+ |
+void HttpUrlFetcher::Delegate::OnReadCompleted(net::URLRequest* request, |
+ int num_bytes) { |
+ DCHECK_EQ(request, request_.get()); |
+ DCHECK_NE(net::ERR_IO_PENDING, num_bytes); |
+ |
+ if (ConsumeBytesRead(request, num_bytes)) { |
+ // Keep reading. |
+ ReadBody(request); |
+ } |
+} |
+ |
+void HttpUrlFetcher::Delegate::ReadBody(net::URLRequest* request) { |
+ // Read as many bytes as are available synchronously. |
+ while (true) { |
+ int num_bytes = request->Read(buf_.get(), kBufSize); |
+ if (num_bytes == net::ERR_IO_PENDING) |
+ return; |
+ |
+ if (num_bytes < 0) { |
+ OnResponseCompleted(request, num_bytes); |
+ return; |
+ } |
+ |
+ if (!ConsumeBytesRead(request, num_bytes)) |
+ return; |
+ } |
+} |
+ |
+bool HttpUrlFetcher::Delegate::ConsumeBytesRead(net::URLRequest* request, |
+ int num_bytes) { |
+ if (num_bytes <= 0) { |
+ // Error while reading, or EOF. |
+ OnResponseCompleted(request, num_bytes); |
+ return false; |
+ } |
+ |
+ bytes_read_so_far_.append(buf_->data(), num_bytes); |
+ return true; |
+} |
+ |
+void HttpUrlFetcher::Delegate::OnResponseCompleted(net::URLRequest* request, |
+ int net_error) { |
+ DCHECK_EQ(request, request_.get()); |
+ |
+ if (result_code_ != net::OK) { |
+ result_listener_->OnFetchStartError(static_cast<net::Error>(result_code_)); |
+ return; |
+ } |
+ |
+ if (net_error != net::OK) { |
+ result_listener_->OnFetchStartError(static_cast<net::Error>(net_error)); |
+ return; |
+ } |
+ |
+ result_listener_->OnFetchCompleteExtractHeaders( |
+ request->url(), request->GetResponseCode(), bytes_read_so_far_.c_str(), |
+ bytes_read_so_far_.size()); |
+} |
+ |
+HttpUrlFetcher::HttpUrlFetcher( |
+ const net::URLRequestContext* url_request_context) |
+ : url_request_context_(url_request_context) {} |
+ |
+HttpUrlFetcher::~HttpUrlFetcher() {} |
+ |
+void HttpUrlFetcher::StartFetch(const GURL& rewritten_url, |
+ const std::string& method, |
+ const net::HttpRequestHeaders& request_headers, |
+ ResultListener* result_listener) { |
+ delagate_.reset(new Delegate(rewritten_url, method, request_headers, |
+ url_request_context_, result_listener)); |
+} |
+ |
+} // namespace headless |