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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     : ResourceHandler(NULL),
     23       save_id_(-1),
     24       render_process_id_(render_process_host_id),
     25       render_view_id_(render_view_id),
     26       url_(url),
     27       content_length_(0),
     28       save_manager_(manager) {
     29 }
     30 
     31 SaveFileResourceHandler::~SaveFileResourceHandler() {
     32 }
     33 
     34 bool SaveFileResourceHandler::OnUploadProgress(int request_id,
     35                                                uint64 position,
     36                                                uint64 size) {
     37   return true;
     38 }
     39 
     40 bool SaveFileResourceHandler::OnRequestRedirected(
     41     int request_id,
     42     const GURL& url,
     43     ResourceResponse* response,
     44     bool* defer) {
     45   final_url_ = url;
     46   return true;
     47 }
     48 
     49 bool SaveFileResourceHandler::OnResponseStarted(
     50     int request_id,
     51     ResourceResponse* response,
     52     bool* defer) {
     53   save_id_ = save_manager_->GetNextId();
     54   // |save_manager_| consumes (deletes):
     55   SaveFileCreateInfo* info = new SaveFileCreateInfo;
     56   info->url = url_;
     57   info->final_url = final_url_;
     58   info->total_bytes = content_length_;
     59   info->save_id = save_id_;
     60   info->render_process_id = render_process_id_;
     61   info->render_view_id = render_view_id_;
     62   info->request_id = request_id;
     63   info->content_disposition = content_disposition_;
     64   info->save_source = SaveFileCreateInfo::SAVE_FILE_FROM_NET;
     65   BrowserThread::PostTask(
     66       BrowserThread::FILE, FROM_HERE,
     67       base::Bind(&SaveFileManager::StartSave, save_manager_, info));
     68   return true;
     69 }
     70 
     71 bool SaveFileResourceHandler::OnWillStart(int request_id,
     72                                           const GURL& url,
     73                                           bool* defer) {
     74   return true;
     75 }
     76 
     77 bool SaveFileResourceHandler::OnWillRead(int request_id,
     78                                          scoped_refptr<net::IOBuffer>* buf,
     79                                          int* buf_size,
     80                                          int min_size) {
     81   DCHECK(buf && buf_size);
     82   if (!read_buffer_.get()) {
     83     *buf_size = min_size < 0 ? kReadBufSize : min_size;
     84     read_buffer_ = new net::IOBuffer(*buf_size);
     85   }
     86   *buf = read_buffer_.get();
     87   return true;
     88 }
     89 
     90 bool SaveFileResourceHandler::OnReadCompleted(int request_id, int bytes_read,
     91                                               bool* defer) {
     92   DCHECK(read_buffer_.get());
     93   // We are passing ownership of this buffer to the save file manager.
     94   scoped_refptr<net::IOBuffer> buffer;
     95   read_buffer_.swap(buffer);
     96   BrowserThread::PostTask(
     97       BrowserThread::FILE, FROM_HERE,
     98       base::Bind(&SaveFileManager::UpdateSaveProgress,
     99           save_manager_, save_id_, buffer, bytes_read));
    100   return true;
    101 }
    102 
    103 void SaveFileResourceHandler::OnResponseCompleted(
    104     int request_id,
    105     const net::URLRequestStatus& status,
    106     const std::string& security_info,
    107     bool* defer) {
    108   BrowserThread::PostTask(
    109       BrowserThread::FILE, FROM_HERE,
    110       base::Bind(&SaveFileManager::SaveFinished, save_manager_, save_id_, url_,
    111           render_process_id_, status.is_success() && !status.is_io_pending()));
    112   read_buffer_ = NULL;
    113 }
    114 
    115 void SaveFileResourceHandler::OnDataDownloaded(
    116     int request_id,
    117     int bytes_downloaded) {
    118   NOTREACHED();
    119 }
    120 
    121 void SaveFileResourceHandler::set_content_length(
    122     const std::string& content_length) {
    123   base::StringToInt64(content_length, &content_length_);
    124 }
    125 
    126 }  // namespace content
    127