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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/download/save_file.h"
#include "base/basictypes.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/string_util.h"
#include "chrome/browser/download/save_types.h"
#if defined(OS_WIN)
#include "chrome/common/win_util.h"
#include "chrome/common/win_safe_util.h"
#endif
SaveFile::SaveFile(const SaveFileCreateInfo* info)
: info_(info),
file_(NULL),
bytes_so_far_(0),
path_renamed_(false),
in_progress_(true) {
DCHECK(info);
DCHECK(info->path.empty());
if (file_util::CreateTemporaryFileName(&full_path_))
Open("wb");
}
SaveFile::~SaveFile() {
Close();
}
// Return false indicate that we got disk error, save file manager will tell
// SavePackage this error, then SavePackage will call its Cancel() method to
// cancel whole save job.
bool SaveFile::AppendDataToFile(const char* data, size_t data_len) {
if (file_) {
if (data_len == fwrite(data, 1, data_len, file_)) {
bytes_so_far_ += data_len;
return true;
} else {
Close();
return false;
}
}
// No file_, treat it as disk error.
return false;
}
void SaveFile::Cancel() {
Close();
// If this job has been canceled, and it has created file,
// We need to delete this created file.
if (!full_path_.empty()) {
file_util::Delete(full_path_, false);
}
}
// Rename the file when we have final name.
bool SaveFile::Rename(const std::wstring& new_path) {
Close();
DCHECK(!path_renamed());
// We cannot rename because rename will keep the same security descriptor
// on the destination file. We want to recreate the security descriptor
// with the security that makes sense in the new path.
if (!file_util::CopyFile(full_path_, new_path))
return false;
file_util::Delete(full_path_, false);
full_path_ = new_path;
path_renamed_ = true;
// Still in saving process, reopen the file.
if (in_progress_ && !Open("a+b"))
return false;
return true;
}
void SaveFile::Finish() {
Close();
in_progress_ = false;
}
void SaveFile::Close() {
if (file_) {
file_util::CloseFile(file_);
file_ = NULL;
}
}
bool SaveFile::Open(const char* open_mode) {
DCHECK(!full_path_.empty());
file_ = file_util::OpenFile(full_path_, open_mode);
if (!file_) {
return false;
}
#if defined(OS_WIN)
// Sets the zone to tell Windows that this file comes from the Internet.
// We ignore the return value because a failure is not fatal.
// TODO(port): Similarly mark on Mac.
win_util::SetInternetZoneIdentifier(full_path_);
#endif
return true;
}
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