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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/url_request_status.h"
     15 
     16 namespace content {
     17 
     18 SaveFileResourceHandler::SaveFileResourceHandler(int render_process_host_id,
     19                                                  int render_view_id,
     20                                                  const GURL& url,
     21                                                  SaveFileManager* manager)
     22     : save_id_(-1),
     23       render_process_id_(render_process_host_id),
     24       render_view_id_(render_view_id),
     25       url_(url),
     26       content_length_(0),
     27       save_manager_(manager) {
     28 }
     29 
     30 SaveFileResourceHandler::~SaveFileResourceHandler() {
     31 }
     32 
     33 bool SaveFileResourceHandler::OnUploadProgress(int request_id,
     34                                                uint64 position,
     35                                                uint64 size) {
     36   return true;
     37 }
     38 
     39 bool SaveFileResourceHandler::OnRequestRedirected(
     40     int request_id,
     41     const GURL& url,
     42     ResourceResponse* response,
     43     bool* defer) {
     44   final_url_ = url;
     45   return true;
     46 }
     47 
     48 bool SaveFileResourceHandler::OnResponseStarted(
     49     int request_id,
     50     ResourceResponse* response,
     51     bool* defer) {
     52   save_id_ = save_manager_->GetNextId();
     53   // |save_manager_| consumes (deletes):
     54   SaveFileCreateInfo* info = new SaveFileCreateInfo;
     55   info->url = url_;
     56   info->final_url = final_url_;
     57   info->total_bytes = content_length_;
     58   info->save_id = save_id_;
     59   info->render_process_id = render_process_id_;
     60   info->render_view_id = render_view_id_;
     61   info->request_id = request_id;
     62   info->content_disposition = content_disposition_;
     63   info->save_source = SaveFileCreateInfo::SAVE_FILE_FROM_NET;
     64   BrowserThread::PostTask(
     65       BrowserThread::FILE, FROM_HERE,
     66       base::Bind(&SaveFileManager::StartSave, save_manager_, info));
     67   return true;
     68 }
     69 
     70 bool SaveFileResourceHandler::OnWillStart(int request_id,
     71                                           const GURL& url,
     72                                           bool* defer) {
     73   return true;
     74 }
     75 
     76 bool SaveFileResourceHandler::OnWillRead(int request_id, net::IOBuffer** buf,
     77                                          int* buf_size, int min_size) {
     78   DCHECK(buf && buf_size);
     79   if (!read_buffer_.get()) {
     80     *buf_size = min_size < 0 ? kReadBufSize : min_size;
     81     read_buffer_ = new net::IOBuffer(*buf_size);
     82   }
     83   *buf = read_buffer_.get();
     84   return true;
     85 }
     86 
     87 bool SaveFileResourceHandler::OnReadCompleted(int request_id, int bytes_read,
     88                                               bool* defer) {
     89   DCHECK(read_buffer_.get());
     90   // We are passing ownership of this buffer to the save file manager.
     91   scoped_refptr<net::IOBuffer> buffer;
     92   read_buffer_.swap(buffer);
     93   BrowserThread::PostTask(
     94       BrowserThread::FILE, FROM_HERE,
     95       base::Bind(&SaveFileManager::UpdateSaveProgress,
     96           save_manager_, save_id_, buffer, bytes_read));
     97   return true;
     98 }
     99 
    100 bool SaveFileResourceHandler::OnResponseCompleted(
    101     int request_id,
    102     const net::URLRequestStatus& status,
    103     const std::string& security_info) {
    104   BrowserThread::PostTask(
    105       BrowserThread::FILE, FROM_HERE,
    106       base::Bind(&SaveFileManager::SaveFinished, save_manager_, save_id_, url_,
    107           render_process_id_, status.is_success() && !status.is_io_pending()));
    108   read_buffer_ = NULL;
    109   return true;
    110 }
    111 
    112 void SaveFileResourceHandler::OnDataDownloaded(
    113     int request_id,
    114     int bytes_downloaded) {
    115   NOTREACHED();
    116 }
    117 
    118 void SaveFileResourceHandler::set_content_length(
    119     const std::string& content_length) {
    120   base::StringToInt64(content_length, &content_length_);
    121 }
    122 
    123 }  // namespace content
    124