content/browser/download/save_file_resource_handler.cc

   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 #include "content/browser/download/save_file_resource_handler.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "content/browser/download/save_file_manager.h"
  12 #include "content/public/browser/browser_thread.h"
  13 #include "net/base/io_buffer.h"
  14 #include "net/url_request/redirect_info.h"
  15 #include "net/url_request/url_request_status.h"
  16
  17 namespace content {
  18
  19 SaveFileResourceHandler::SaveFileResourceHandler(net::URLRequest* request,
  20                                                  int render_process_host_id,
  21                                                  int render_frame_id,
  22                                                  const GURL& url,
  23                                                  SaveFileManager* manager)
  24     : ResourceHandler(request),
  25       save_id_(-1),
  26       render_process_id_(render_process_host_id),
  27       render_frame_id_(render_frame_id),
  28       url_(url),
  29       content_length_(0),
  30       save_manager_(manager) {
  31 }
  32
  33 SaveFileResourceHandler::~SaveFileResourceHandler() {
  34 }
  35
  36 bool SaveFileResourceHandler::OnRequestRedirected(
  37     const net::RedirectInfo& redirect_info,
  38     ResourceResponse* response,
  39     bool* defer) {
  40   final_url_ = redirect_info.new_url;
  41   return true;
  42 }
  43
  44 bool SaveFileResourceHandler::OnResponseStarted(ResourceResponse* response,
  45                                                 bool* defer) {
  46   save_id_ = save_manager_->GetNextId();
  47   // |save_manager_| consumes (deletes):
  48   SaveFileCreateInfo* info = new SaveFileCreateInfo;
  49   info->url = url_;
  50   info->final_url = final_url_;
  51   info->total_bytes = content_length_;
  52   info->save_id = save_id_;
  53   info->render_process_id = render_process_id_;
  54   info->render_frame_id = render_frame_id_;
  55   info->request_id = GetRequestID();
  56   info->content_disposition = content_disposition_;
  57   info->save_source = SaveFileCreateInfo::SAVE_FILE_FROM_NET;
  58   BrowserThread::PostTask(
  59       BrowserThread::FILE, FROM_HERE,
  60       base::Bind(&SaveFileManager::StartSave, save_manager_, info));
  61   return true;
  62 }
  63
  64 bool SaveFileResourceHandler::OnWillStart(const GURL& url, bool* defer) {
  65   return true;
  66 }
  67
  68 bool SaveFileResourceHandler::OnBeforeNetworkStart(const GURL& url,
  69                                                    bool* defer) {
  70   return true;
  71 }
  72
  73 bool SaveFileResourceHandler::OnWillRead(scoped_refptr<net::IOBuffer>* buf,
  74                                          int* buf_size,
  75                                          int min_size) {
  76   DCHECK(buf && buf_size);
  77   if (!read_buffer_.get()) {
  78     *buf_size = min_size < 0 ? kReadBufSize : min_size;
  79     read_buffer_ = new net::IOBuffer(*buf_size);
  80   }
  81   *buf = read_buffer_.get();
  82   return true;
  83 }
  84
  85 bool SaveFileResourceHandler::OnReadCompleted(int bytes_read, bool* defer) {
  86   DCHECK(read_buffer_.get());
  87   // We are passing ownership of this buffer to the save file manager.
  88   scoped_refptr<net::IOBuffer> buffer;
  89   read_buffer_.swap(buffer);
  90   BrowserThread::PostTask(
  91       BrowserThread::FILE, FROM_HERE,
  92       base::Bind(&SaveFileManager::UpdateSaveProgress,
  93           save_manager_, save_id_, buffer, bytes_read));
  94   return true;
  95 }
  96
  97 void SaveFileResourceHandler::OnResponseCompleted(
  98     const net::URLRequestStatus& status,
  99     const std::string& security_info,
 100     bool* defer) {
 101   BrowserThread::PostTask(
 102       BrowserThread::FILE, FROM_HERE,
 103       base::Bind(&SaveFileManager::SaveFinished, save_manager_, save_id_, url_,
 104           render_process_id_, status.is_success() && !status.is_io_pending()));
 105   read_buffer_ = NULL;
 106 }
 107
 108 void SaveFileResourceHandler::OnDataDownloaded(int bytes_downloaded) {
 109   NOTREACHED();
 110 }
 111
 112 void SaveFileResourceHandler::set_content_length(
 113     const std::string& content_length) {
 114   base::StringToInt64(content_length, &content_length_);
 115 }
 116
 117 }  // namespace content