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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "chrome/browser/save_file.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "chrome/browser/save_types.h"
#include "chrome/common/win_util.h"
#include "chrome/common/win_safe_util.h"
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(L"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, int 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()) {
DeleteFile(full_path_.c_str());
}
}
// 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 the last parameter
// is FALSE and the new file already exists, the function overwrites the
// existing file and succeeds.
if (!CopyFile(full_path_.c_str(), new_path.c_str(), FALSE))
return false;
DeleteFile(full_path_.c_str());
full_path_ = new_path;
path_renamed_ = true;
// Still in saving process, reopen the file.
if (in_progress_ && !Open(L"a+b"))
return false;
return true;
}
void SaveFile::Finish() {
Close();
in_progress_ = false;
}
void SaveFile::Close() {
if (file_) {
fclose(file_);
file_ = NULL;
}
}
bool SaveFile::Open(const wchar_t* open_mode) {
DCHECK(!full_path_.empty());
if (_wfopen_s(&file_, full_path_.c_str(), open_mode)) {
file_ = NULL;
return false;
}
// Sets the zone to tell Windows that this file comes from the Internet.
// We ignore the return value because a failure is not fatal.
win_util::SetInternetZoneIdentifier(full_path_);
return true;
}
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