1 // Copyright 2014 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_CHROMEOS_FILEAPI_EXTERNAL_FILE_URL_REQUEST_JOB_H_ 6 #define CHROME_BROWSER_CHROMEOS_FILEAPI_EXTERNAL_FILE_URL_REQUEST_JOB_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/callback.h" 12 #include "base/memory/weak_ptr.h" 13 #include "chrome/browser/chromeos/drive/file_errors.h" 14 #include "net/base/net_errors.h" 15 #include "net/http/http_byte_range.h" 16 #include "net/url_request/url_request_job.h" 17 #include "storage/browser/blob/file_stream_reader.h" 18 #include "storage/browser/fileapi/file_system_url.h" 19 20 namespace net { 21 class IOBuffer; 22 class NetworkDelegate; 23 class URLRequest; 24 } // namespace net 25 26 namespace chromeos { 27 28 // ExternalFileURLRequestJob is the gateway between network-level drive:... 29 // requests for drive resources and FileSystem. It exposes content URLs 30 // formatted as drive:<drive-file-path>. 31 // The methods should be run on IO thread. 32 class ExternalFileURLRequestJob : public net::URLRequestJob { 33 public: 34 // Callback to take results from an internal helper defined in 35 // drive_url_request_job.cc. 36 typedef base::Callback< 37 void(net::Error, 38 const scoped_refptr<storage::FileSystemContext>& file_system_context, 39 const storage::FileSystemURL& file_system_url, 40 const std::string& mime_type)> HelperCallback; 41 42 ExternalFileURLRequestJob(void* profile_id, 43 net::URLRequest* request, 44 net::NetworkDelegate* network_delegate); 45 46 // net::URLRequestJob overrides: 47 virtual void SetExtraRequestHeaders( 48 const net::HttpRequestHeaders& headers) OVERRIDE; 49 virtual void Start() OVERRIDE; 50 virtual void Kill() OVERRIDE; 51 virtual bool GetMimeType(std::string* mime_type) const OVERRIDE; 52 virtual bool IsRedirectResponse(GURL* location, 53 int* http_status_code) OVERRIDE; 54 virtual bool ReadRawData(net::IOBuffer* buf, 55 int buf_size, 56 int* bytes_read) OVERRIDE; 57 58 protected: 59 virtual ~ExternalFileURLRequestJob(); 60 61 private: 62 // Called from an internal helper class defined in drive_url_request_job.cc, 63 // which is running on the UI thread. 64 void OnHelperResultObtained( 65 net::Error error, 66 const scoped_refptr<storage::FileSystemContext>& file_system_context, 67 const storage::FileSystemURL& file_system_url, 68 const std::string& mime_type); 69 70 // Called from FileSystemBackend::GetRedirectURLForContents. 71 void OnRedirectURLObtained(const GURL& redirect_url); 72 73 // Called from DriveURLRequestJob::OnFileInfoObtained. 74 void OnFileInfoObtained(base::File::Error result, 75 const base::File::Info& file_info); 76 77 // Called when DriveFileStreamReader::Read is completed. 78 void OnReadCompleted(int read_result); 79 80 void* const profile_id_; 81 82 // The range of the file to be returned. 83 net::HttpByteRange byte_range_; 84 int64 remaining_bytes_; 85 86 scoped_refptr<storage::FileSystemContext> file_system_context_; 87 storage::FileSystemURL file_system_url_; 88 std::string mime_type_; 89 scoped_ptr<storage::FileStreamReader> stream_reader_; 90 GURL redirect_url_; 91 92 // This should remain the last member so it'll be destroyed first and 93 // invalidate its weak pointers before other members are destroyed. 94 base::WeakPtrFactory<ExternalFileURLRequestJob> weak_ptr_factory_; 95 DISALLOW_COPY_AND_ASSIGN(ExternalFileURLRequestJob); 96 }; 97 98 } // namespace chromeos 99 100 #endif // CHROME_BROWSER_CHROMEOS_FILEAPI_EXTERNAL_FILE_URL_REQUEST_JOB_H_ 101
