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      1 // Copyright (c) 2011 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 NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
      6 #define NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
      7 #pragma once
      8 
      9 #include <string>
     10 #include <vector>
     11 
     12 #include "base/file_path.h"
     13 #include "base/task.h"
     14 #include "net/base/completion_callback.h"
     15 #include "net/base/file_stream.h"
     16 #include "net/http/http_byte_range.h"
     17 #include "net/url_request/url_request.h"
     18 #include "net/url_request/url_request_job.h"
     19 
     20 namespace file_util {
     21 struct FileInfo;
     22 }
     23 
     24 namespace net {
     25 
     26 // A request job that handles reading file URLs
     27 class URLRequestFileJob : public URLRequestJob {
     28  public:
     29   URLRequestFileJob(URLRequest* request, const FilePath& file_path);
     30 
     31   static URLRequest::ProtocolFactory Factory;
     32 
     33 #if defined(OS_CHROMEOS)
     34   static bool AccessDisabled(const FilePath& file_path);
     35 #endif
     36 
     37   // URLRequestJob:
     38   virtual void Start();
     39   virtual void Kill();
     40   virtual bool ReadRawData(IOBuffer* buf, int buf_size, int* bytes_read);
     41   virtual bool IsRedirectResponse(GURL* location, int* http_status_code);
     42   virtual Filter* SetupFilter() const;
     43   virtual bool GetMimeType(std::string* mime_type) const;
     44   virtual void SetExtraRequestHeaders(const HttpRequestHeaders& headers);
     45 
     46  protected:
     47   virtual ~URLRequestFileJob();
     48 
     49   // The OS-specific full path name of the file
     50   FilePath file_path_;
     51 
     52  private:
     53   void DidResolve(bool exists, const base::PlatformFileInfo& file_info);
     54   void DidRead(int result);
     55 
     56   CompletionCallbackImpl<URLRequestFileJob> io_callback_;
     57   FileStream stream_;
     58   bool is_directory_;
     59 
     60   HttpByteRange byte_range_;
     61   int64 remaining_bytes_;
     62 
     63 #if defined(OS_WIN)
     64   class AsyncResolver;
     65   friend class AsyncResolver;
     66   scoped_refptr<AsyncResolver> async_resolver_;
     67 #endif
     68 
     69   ScopedRunnableMethodFactory<URLRequestFileJob> method_factory_;
     70 
     71   DISALLOW_COPY_AND_ASSIGN(URLRequestFileJob);
     72 };
     73 
     74 }  // namespace net
     75 
     76 #endif  // NET_URL_REQUEST_URL_REQUEST_FILE_JOB_H_
     77