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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef BASE_URL_REQUEST_URL_REQUEST_FTP_JOB_H__
+#define BASE_URL_REQUEST_URL_REQUEST_FTP_JOB_H__
+
+#include "net/url_request/url_request_inet_job.h"
+
+// A basic FTP job that handles download files and showing directory listings.
+class URLRequestFtpJob : public URLRequestInetJob {
+ public:
+ static URLRequestJob* Factory(URLRequest* request, const std::string& scheme);
+
+ virtual ~URLRequestFtpJob();
+
+ // URLRequestJob methods:
+ virtual void Start();
+ virtual bool GetMimeType(std::string* mime_type);
+
+ // URLRequestInetJob methods:
+ virtual void OnIOComplete(const AsyncResult& result);
+
+ protected:
+ URLRequestFtpJob(URLRequest* request);
+
+ // Starts the WinInet request.
+ virtual void SendRequest();
+
+ virtual int CallInternetRead(char* dest, int dest_size, int *bytes_read);
+ virtual bool GetReadBytes(const AsyncResult& result, int* bytes_read);
+ virtual void OnCancelAuth();
+ virtual void OnSetAuth();
+ virtual bool NeedsAuth();
+ virtual void GetAuthChallengeInfo(scoped_refptr<AuthChallengeInfo>*);
+ virtual void GetCachedAuthData(const AuthChallengeInfo& auth_info,
+ scoped_refptr<AuthData>* auth_data);
+ virtual bool IsRedirectResponse(GURL* location, int* http_status_code);
+
+ private:
+ // Called after InternetConnect successfully connects to server.
+ void OnConnect();
+
+ // Called after FtpSetCurrentDirectory attempts to change current dir.
+ void OnSetCurrentDirectory(DWORD last_error);
+
+ // Requests the next file in the directory listing from WinInet.
+ void FindNextFile();
+
+ // Called when the first file in a directory listing is available.
+ void OnFindFirstFile(DWORD last_error);
+
+ // Called when a file in a directory listing is available.
+ void OnFindFile(DWORD last_error);
+
+ // Call this when starting a directory listing to setup the html.
+ void OnStartDirectoryTraversal();
+
+ // Call this at the end of a directory listing to complete the html.
+ void OnFinishDirectoryTraversal();
+
+ // If given data, writes it to the directory listing html. If
+ // call_io_complete is true, will also notify the parent class that we wrote
+ // data in the given buffer.
+ int WriteData(const std::string* data, bool call_io_complete);
+
+ // Continuation function for calling OnIOComplete through the message loop.
+ virtual void ContinueIOComplete(int bytes_written);
+
+ // Continuation function for calling NotifyHeadersComplete through
+ //the message loop
+ virtual void ContinueNotifyHeadersComplete();
+
+ typedef enum {
+ START = 0x200, // initial state of the ftp job
+ CONNECTING, // opening the url
+ SETTING_CUR_DIRECTORY, // attempting to change current dir to match request
+ FINDING_FIRST_FILE, // retrieving first file information in cur dir (by FtpFindFirstFile)
+ GETTING_DIRECTORY, // retrieving the directory listing (if directory)
+ GETTING_FILE_HANDLE, // initiate access to file by call to FtpOpenFile (if file)
+ GETTING_FILE, // retrieving the file (if file)
+ DONE // URLRequestInetJob is reading the response now
+ } FtpJobState;
+
+ // The FtpJob has several asynchronous operations which happen
+ // in sequence. The state keeps track of which asynchronous IO
+ // is pending at any given point in time.
+ FtpJobState state_;
+
+ // In IE 4 and before, this pointer passed to asynchronous InternetReadFile
+ // calls is where the number of read bytes is written to.
+ DWORD bytes_read_;
+
+ bool is_directory_; // does the url point to a file or directory
+ WIN32_FIND_DATAA find_data_;
+ std::string directory_html_; // if url is directory holds html
+
+ // When building a directory listing, we need to temporarily hold on to the
+ // buffer in between the time a Read() call comes in and we get the file
+ // entry from WinInet.
+ char* dest_;
+ int dest_size_;
+
+
+ DISALLOW_EVIL_CONSTRUCTORS(URLRequestFtpJob);
+};
+
+#endif // #define BASE_URL_REQUEST_URL_REQUEST_FTP_JOB_H__