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      1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_INTERCEPTOR_H_
      6 #define CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_INTERCEPTOR_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 
     12 class GURL;
     13 
     14 namespace base {
     15 class FilePath;
     16 }
     17 
     18 namespace content {
     19 
     20 // Intercepts HTTP requests and gives pre-defined responses to specified URLs.
     21 // The pre-defined responses are loaded from files on disk.  The interception
     22 // occurs while the URLRequestPrepackagedInterceptor is alive.
     23 class URLRequestPrepackagedInterceptor {
     24  public:
     25   // Registers an interceptor for urls using |scheme| and |hostname|. Urls
     26   // passed to "SetResponse" are required to use |scheme| and |hostname|.
     27   URLRequestPrepackagedInterceptor(const std::string& scheme,
     28                                    const std::string& hostname);
     29   virtual ~URLRequestPrepackagedInterceptor();
     30 
     31   // When requests for |url| arrive, respond with the contents of |path|. The
     32   // hostname and scheme of |url| must match the corresponding parameters
     33   // passed as constructor arguments.
     34   void SetResponse(const GURL& url, const base::FilePath& path);
     35 
     36   // Identical to SetResponse except that query parameters are ignored on
     37   // incoming URLs when comparing against |url|.
     38   void SetResponseIgnoreQuery(const GURL& url, const base::FilePath& path);
     39 
     40   // Returns how many requests have been issued that have a stored reply.
     41   int GetHitCount();
     42 
     43  private:
     44   class Delegate;
     45 
     46   const std::string scheme_;
     47   const std::string hostname_;
     48 
     49   // After creation, |delegate_| lives on the IO thread, and a task to delete
     50   // it is posted from ~URLRequestPrepackagedInterceptor().
     51   Delegate* delegate_;
     52 
     53   DISALLOW_COPY_AND_ASSIGN(URLRequestPrepackagedInterceptor);
     54 };
     55 
     56 // Specialization of URLRequestPrepackagedInterceptor where scheme is "http" and
     57 // hostname is "localhost".
     58 class URLLocalHostRequestPrepackagedInterceptor
     59     : public URLRequestPrepackagedInterceptor {
     60  public:
     61   URLLocalHostRequestPrepackagedInterceptor();
     62 
     63  private:
     64   DISALLOW_COPY_AND_ASSIGN(URLLocalHostRequestPrepackagedInterceptor);
     65 };
     66 
     67 }  // namespace content
     68 
     69 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_INTERCEPTOR_H_
     70