| // 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. |
| |
| #ifndef HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_ |
| #define HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_ |
| |
| #include <stddef.h> |
| #include <functional> |
| #include <memory> |
| #include <string> |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "headless/public/util/managed_dispatch_url_request_job.h" |
| #include "headless/public/util/url_fetcher.h" |
| #include "net/base/net_errors.h" |
| #include "net/url_request/url_request.h" |
| #include "url/gurl.h" |
| |
| namespace net { |
| class HttpResponseHeaders; |
| class IOBuffer; |
| } // namespace net |
| |
| namespace headless { |
| |
| class URLRequestDispatcher; |
| |
| // Intended for use in a protocol handler, this ManagedDispatchURLRequestJob has |
| // the following features: |
| // |
| // 1. The delegate can extension observe / cancel and redirect requests |
| // 2. The delegate can optionally provide the results, otherwise the specifed |
| // fetcher is invoked. |
| class GenericURLRequestJob : public ManagedDispatchURLRequestJob, |
| public URLFetcher::ResultListener { |
| public: |
| enum class RewriteResult { kAllow, kDeny, kFailure }; |
| using RewriteCallback = |
| std::function<void(RewriteResult result, const GURL& url)>; |
| |
| struct HttpResponse { |
| GURL final_url; |
| int http_response_code; |
| |
| // The HTTP headers and response body. Note the lifetime of |response_data| |
| // is expected to outlive the GenericURLRequestJob. |
| const char* response_data; // NOT OWNED |
| size_t response_data_size; |
| }; |
| |
| class Delegate { |
| public: |
| // Allows the delegate to rewrite the URL for a given request. Return true |
| // to signal that the rewrite is in progress and |callback| will be called |
| // with the result, or false to indicate that no rewriting is necessary. |
| // Called on an arbitrary thread. |
| virtual bool BlockOrRewriteRequest(const GURL& url, |
| const std::string& referrer, |
| RewriteCallback callback) = 0; |
| |
| // Allows the delegate to synchronously fulfill a request with a reply. |
| // Called on an arbitrary thread. |
| virtual const HttpResponse* MaybeMatchResource( |
| const GURL& url, |
| const net::HttpRequestHeaders& request_headers) = 0; |
| |
| // Signals that a resource load has finished. Called on an arbitrary thread. |
| virtual void OnResourceLoadComplete(const GURL& final_url, |
| const std::string& mime_type, |
| int http_response_code) = 0; |
| |
| protected: |
| virtual ~Delegate() {} |
| }; |
| |
| // NOTE |url_request_dispatcher| and |delegate| must outlive the |
| // GenericURLRequestJob. |
| GenericURLRequestJob(net::URLRequest* request, |
| net::NetworkDelegate* network_delegate, |
| URLRequestDispatcher* url_request_dispatcher, |
| std::unique_ptr<URLFetcher> url_fetcher, |
| Delegate* delegate); |
| ~GenericURLRequestJob() override; |
| |
| // net::URLRequestJob implementation: |
| void SetExtraRequestHeaders(const net::HttpRequestHeaders& headers) override; |
| void Start() override; |
| int ReadRawData(net::IOBuffer* buf, int buf_size) override; |
| int GetResponseCode() const override; |
| void GetResponseInfo(net::HttpResponseInfo* info) override; |
| bool GetMimeType(std::string* mime_type) const override; |
| bool GetCharset(std::string* charset) override; |
| |
| // URLFetcher::FetchResultListener implementation: |
| void OnStartError(net::Error error) override; |
| void OnFetchComplete(const GURL& final_url, |
| int http_response_code, |
| scoped_refptr<net::HttpResponseHeaders> response_headers, |
| const char* body, |
| size_t body_size) override; |
| |
| private: |
| void PrepareCookies(const GURL& rewritten_url, |
| const url::Origin& site_for_cookies); |
| |
| void OnCookiesAvailable(const GURL& rewritten_url, |
| const net::CookieList& cookie_list); |
| |
| std::unique_ptr<URLFetcher> url_fetcher_; |
| net::HttpRequestHeaders extra_request_headers_; |
| scoped_refptr<net::HttpResponseHeaders> response_headers_; |
| Delegate* delegate_; // Not owned. |
| const char* body_ = nullptr; // Not owned. |
| int http_response_code_ = 0; |
| size_t body_size_ = 0; |
| size_t read_offset_ = 0; |
| |
| base::WeakPtrFactory<GenericURLRequestJob> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(GenericURLRequestJob); |
| }; |
| |
| } // namespace headless |
| |
| #endif // HEADLESS_PUBLIC_UTIL_GENERIC_URL_REQUEST_JOB_H_ |