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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 #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_view_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_view_id_(render_view_id),
     28       url_(url),
     29       content_length_(0),
     30       save_manager_(manager) {
     31 }
     32 
     33 SaveFileResourceHandler::~SaveFileResourceHandler() {
     34 }
     35 
     36 bool SaveFileResourceHandler::OnUploadProgress(uint64 position, uint64 size) {
     37   return true;
     38 }
     39 
     40 bool SaveFileResourceHandler::OnRequestRedirected(
     41     const net::RedirectInfo& redirect_info,
     42     ResourceResponse* response,
     43     bool* defer) {
     44   final_url_ = redirect_info.new_url;
     45   return true;
     46 }
     47 
     48 bool SaveFileResourceHandler::OnResponseStarted(ResourceResponse* response,
     49                                                 bool* defer) {
     50   save_id_ = save_manager_->GetNextId();
     51   // |save_manager_| consumes (deletes):
     52   SaveFileCreateInfo* info = new SaveFileCreateInfo;
     53   info->url = url_;
     54   info->final_url = final_url_;
     55   info->total_bytes = content_length_;
     56   info->save_id = save_id_;
     57   info->render_process_id = render_process_id_;
     58   info->render_view_id = render_view_id_;
     59   info->request_id = GetRequestID();
     60   info->content_disposition = content_disposition_;
     61   info->save_source = SaveFileCreateInfo::SAVE_FILE_FROM_NET;
     62   BrowserThread::PostTask(
     63       BrowserThread::FILE, FROM_HERE,
     64       base::Bind(&SaveFileManager::StartSave, save_manager_, info));
     65   return true;
     66 }
     67 
     68 bool SaveFileResourceHandler::OnWillStart(const GURL& url, bool* defer) {
     69   return true;
     70 }
     71 
     72 bool SaveFileResourceHandler::OnBeforeNetworkStart(const GURL& url,
     73                                                    bool* defer) {
     74   return true;
     75 }
     76 
     77 bool SaveFileResourceHandler::OnWillRead(scoped_refptr<net::IOBuffer>* buf,
     78                                          int* buf_size,
     79                                          int min_size) {
     80   DCHECK(buf && buf_size);
     81   if (!read_buffer_.get()) {
     82     *buf_size = min_size < 0 ? kReadBufSize : min_size;
     83     read_buffer_ = new net::IOBuffer(*buf_size);
     84   }
     85   *buf = read_buffer_.get();
     86   return true;
     87 }
     88 
     89 bool SaveFileResourceHandler::OnReadCompleted(int bytes_read, bool* defer) {
     90   DCHECK(read_buffer_.get());
     91   // We are passing ownership of this buffer to the save file manager.
     92   scoped_refptr<net::IOBuffer> buffer;
     93   read_buffer_.swap(buffer);
     94   BrowserThread::PostTask(
     95       BrowserThread::FILE, FROM_HERE,
     96       base::Bind(&SaveFileManager::UpdateSaveProgress,
     97           save_manager_, save_id_, buffer, bytes_read));
     98   return true;
     99 }
    100 
    101 void SaveFileResourceHandler::OnResponseCompleted(
    102     const net::URLRequestStatus& status,
    103     const std::string& security_info,
    104     bool* defer) {
    105   BrowserThread::PostTask(
    106       BrowserThread::FILE, FROM_HERE,
    107       base::Bind(&SaveFileManager::SaveFinished, save_manager_, save_id_, url_,
    108           render_process_id_, status.is_success() && !status.is_io_pending()));
    109   read_buffer_ = NULL;
    110 }
    111 
    112 void SaveFileResourceHandler::OnDataDownloaded(int bytes_downloaded) {
    113   NOTREACHED();
    114 }
    115 
    116 void SaveFileResourceHandler::set_content_length(
    117     const std::string& content_length) {
    118   base::StringToInt64(content_length, &content_length_);
    119 }
    120 
    121 }  // namespace content
    122