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// Copyright (c) 2010 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.
//
// This file declares util functions for setup project.
#include "chrome/installer/setup/setup_util.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "chrome/installer/util/master_preferences.h"
#include "chrome/installer/util/util_constants.h"
#include "courgette/courgette.h"
#include "third_party/bspatch/mbspatch.h"
int installer::ApplyDiffPatch(const FilePath& src,
const FilePath& patch,
const FilePath& dest) {
VLOG(1) << "Applying patch " << patch.value() << " to file " << src.value()
<< " and generating file " << dest.value();
// Try Courgette first. Courgette checks the patch file first and fails
// quickly if the patch file does not have a valid Courgette header.
courgette::Status patch_status =
courgette::ApplyEnsemblePatch(src.value().c_str(),
patch.value().c_str(),
dest.value().c_str());
if (patch_status == courgette::C_OK)
return 0;
VLOG(1) << "Failed to apply patch " << patch.value() << " using courgette.";
return ApplyBinaryPatch(src.value().c_str(), patch.value().c_str(),
dest.value().c_str());
}
installer::Version* installer::GetVersionFromArchiveDir(
const FilePath& chrome_path) {
VLOG(1) << "Looking for Chrome version folder under " << chrome_path.value();
FilePath root_path = chrome_path.Append(L"*");
// TODO(tommi): The version directory really should match the version of
// setup.exe. To begin with, we should at least DCHECK that that's true.
// TODO(tommi): use file_util::FileEnumerator.
WIN32_FIND_DATA find_data = {0};
HANDLE file_handle = FindFirstFile(root_path.value().c_str(), &find_data);
BOOL ret = TRUE;
installer::Version* version = NULL;
// Here we are assuming that the installer we have is really valid so there
// can not be two version directories. We exit as soon as we find a valid
// version directory.
while (ret) {
if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY &&
lstrcmpW(find_data.cFileName, L"..") != 0 &&
lstrcmpW(find_data.cFileName, L".") != 0) {
VLOG(1) << "directory found: " << find_data.cFileName;
version = installer::Version::GetVersionFromString(find_data.cFileName);
if (version)
break;
}
ret = FindNextFile(file_handle, &find_data);
}
FindClose(file_handle);
return version;
}
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