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// Copyright 2014 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 "components/component_updater/component_updater_paths.h"
#include "base/lazy_instance.h"
#include "base/path_service.h"
namespace component_updater {
namespace {
// This key gives the root directory of all the component installations.
static int g_components_preinstalled_root_key = -1;
static int g_components_preinstalled_root_key_alt = -1;
static int g_components_user_root_key = -1;
} // namespace
const base::FilePath::CharType kSupervisedUserWhitelistDirName[] =
FILE_PATH_LITERAL("SupervisedUserWhitelists");
bool PathProvider(int key, base::FilePath* result) {
DCHECK_GT(g_components_user_root_key, 0);
DCHECK_GT(g_components_preinstalled_root_key, 0);
// Early exit here to prevent a potential infinite loop when we retrieve
// the path for g_components_*_root_key.
if (key < PATH_START || key > PATH_END)
return false;
switch (key) {
case DIR_COMPONENT_PREINSTALLED:
return PathService::Get(g_components_preinstalled_root_key, result);
case DIR_COMPONENT_PREINSTALLED_ALT:
return PathService::Get(g_components_preinstalled_root_key_alt, result);
case DIR_COMPONENT_USER:
return PathService::Get(g_components_user_root_key, result);
}
base::FilePath cur;
if (!PathService::Get(g_components_user_root_key, &cur))
return false;
switch (key) {
case DIR_COMPONENT_CLD2:
cur = cur.Append(FILE_PATH_LITERAL("CLD"));
break;
case DIR_RECOVERY_BASE:
cur = cur.Append(FILE_PATH_LITERAL("recovery"));
break;
case DIR_SWIFT_SHADER:
cur = cur.Append(FILE_PATH_LITERAL("SwiftShader"));
break;
case DIR_SUPERVISED_USER_WHITELISTS:
cur = cur.Append(kSupervisedUserWhitelistDirName);
break;
default:
return false;
}
*result = cur;
return true;
}
// This cannot be done as a static initializer sadly since Visual Studio will
// eliminate this object file if there is no direct entry point into it.
void RegisterPathProvider(int components_preinstalled_root_key,
int components_preinstalled_root_key_alt,
int components_user_root_key) {
DCHECK_EQ(g_components_preinstalled_root_key, -1);
DCHECK_EQ(g_components_preinstalled_root_key_alt, -1);
DCHECK_EQ(g_components_user_root_key, -1);
DCHECK_GT(components_preinstalled_root_key, 0);
DCHECK_GT(components_preinstalled_root_key_alt, 0);
DCHECK_GT(components_user_root_key, 0);
DCHECK(components_preinstalled_root_key < PATH_START ||
components_preinstalled_root_key > PATH_END);
DCHECK(components_preinstalled_root_key_alt < PATH_START ||
components_preinstalled_root_key_alt > PATH_END);
DCHECK(components_user_root_key < PATH_START ||
components_user_root_key > PATH_END);
g_components_preinstalled_root_key = components_preinstalled_root_key;
g_components_preinstalled_root_key_alt = components_preinstalled_root_key_alt;
g_components_user_root_key = components_user_root_key;
PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
}
} // namespace component_updater
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