cef/libcef/common/resource_util.cc

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// Copyright 2017 The Chromium Embedded Framework Authors. Portions copyright
// 2011 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 "libcef/common/resource_util.h"
#if BUILDFLAG(IS_LINUX)
#include <dlfcn.h>
#endif
#include "libcef/features/runtime.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/notreached.h"
#include "base/path_service.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_paths_internal.h"
#include "chrome/common/chrome_switches.h"
#include "ui/base/layout.h"
#if BUILDFLAG(IS_MAC)
#include "base/mac/foundation_util.h"
#include "libcef/common/util_mac.h"
#endif
#if BUILDFLAG(IS_LINUX)
#include "base/environment.h"
#include "base/nix/xdg_util.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "base/win/registry.h"
#endif
namespace resource_util {
namespace {
#if BUILDFLAG(IS_LINUX)
// Based on chrome/common/chrome_paths_linux.cc.
// See http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
// for a spec on where config files go. The net result on most systems is that
// we use "~/.config/cef_user_data".
bool GetDefaultUserDataDirectory(base::FilePath* result) {
std::unique_ptr<base::Environment> env(base::Environment::Create());
base::FilePath config_dir(base::nix::GetXDGDirectory(
env.get(), base::nix::kXdgConfigHomeEnvVar, base::nix::kDotConfigDir));
*result = config_dir.Append(FILE_PATH_LITERAL("cef_user_data"));
return true;
}
#elif BUILDFLAG(IS_MAC)
// Based on chrome/common/chrome_paths_mac.mm.
bool GetDefaultUserDataDirectory(base::FilePath* result) {
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if (!base::PathService::Get(base::DIR_APP_DATA, result)) {
return false;
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}
*result = result->Append(FILE_PATH_LITERAL("CEF"));
*result = result->Append(FILE_PATH_LITERAL("User Data"));
return true;
}
#elif BUILDFLAG(IS_WIN)
// Based on chrome/common/chrome_paths_win.cc.
bool GetDefaultUserDataDirectory(base::FilePath* result) {
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if (!base::PathService::Get(base::DIR_LOCAL_APP_DATA, result)) {
return false;
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}
*result = result->Append(FILE_PATH_LITERAL("CEF"));
*result = result->Append(FILE_PATH_LITERAL("User Data"));
return true;
}
#endif
base::FilePath GetUserDataPath(CefSettings* settings,
const base::CommandLine* command_line) {
// |settings| will be non-nullptr in the main process only.
if (settings) {
// With the Chrome runtime Profile paths must always be relative to the
// user data directory, so defaulting to |root_cache_path| first is
// appropriate.
CefString user_data_path;
if (cef::IsChromeRuntimeEnabled() && settings->root_cache_path.length > 0) {
user_data_path = CefString(&settings->root_cache_path);
}
if (user_data_path.empty() && settings->user_data_path.length > 0) {
user_data_path = CefString(&settings->user_data_path);
}
if (!user_data_path.empty()) {
return base::FilePath(user_data_path);
}
}
// This may be set for sub-processes.
base::FilePath result =
command_line->GetSwitchValuePath(switches::kUserDataDir);
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if (!result.empty()) {
return result;
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}
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if (GetDefaultUserDataDirectory(&result)) {
return result;
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}
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if (base::PathService::Get(base::DIR_TEMP, &result)) {
return result;
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}
NOTREACHED();
return result;
}
// Consider downloads 'dangerous' if they go to the home directory on Linux and
// to the desktop on any platform.
// From chrome/browser/download/download_prefs.cc.
bool DownloadPathIsDangerous(const base::FilePath& download_path) {
#if BUILDFLAG(IS_LINUX)
base::FilePath home_dir = base::GetHomeDir();
if (download_path == home_dir) {
return true;
}
#endif
base::FilePath desktop_dir;
if (!base::PathService::Get(base::DIR_USER_DESKTOP, &desktop_dir)) {
NOTREACHED();
return false;
}
return (download_path == desktop_dir);
}
bool GetDefaultDownloadDirectory(base::FilePath* result) {
// This will return the safe download directory if necessary.
return chrome::GetUserDownloadsDirectory(result);
}
bool GetDefaultDownloadSafeDirectory(base::FilePath* result) {
// Start with the default download directory.
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if (!GetDefaultDownloadDirectory(result)) {
return false;
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}
if (DownloadPathIsDangerous(*result)) {
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX)
// Explicitly switch to the safe download directory.
return chrome::GetUserDownloadsDirectorySafe(result);
#else
// No viable alternative on macOS.
return false;
#endif
}
return true;
}
} // namespace
#if BUILDFLAG(IS_MAC)
base::FilePath GetResourcesDir() {
return util_mac::GetFrameworkResourcesDirectory();
}
// Use a "~/Library/Logs/<app name>_debug.log" file where <app name> is the name
// of the running executable.
base::FilePath GetDefaultLogFilePath() {
std::string exe_name = util_mac::GetMainProcessPath().BaseName().value();
return base::mac::GetUserLibraryPath()
.Append(FILE_PATH_LITERAL("Logs"))
.Append(FILE_PATH_LITERAL(exe_name + "_debug.log"));
}
#else // !BUILDFLAG(IS_MAC)
base::FilePath GetResourcesDir() {
base::FilePath pak_dir;
base::PathService::Get(base::DIR_ASSETS, &pak_dir);
return pak_dir;
}
// Use a "debug.log" file in the running executable's directory.
base::FilePath GetDefaultLogFilePath() {
base::FilePath log_path;
base::PathService::Get(base::DIR_EXE, &log_path);
return log_path.Append(FILE_PATH_LITERAL("debug.log"));
}
#endif // !BUILDFLAG(IS_MAC)
void OverrideDefaultDownloadDir() {
base::FilePath dir_default_download;
base::FilePath dir_default_download_safe;
if (GetDefaultDownloadDirectory(&dir_default_download)) {
base::PathService::Override(chrome::DIR_DEFAULT_DOWNLOADS,
dir_default_download);
}
if (GetDefaultDownloadSafeDirectory(&dir_default_download_safe)) {
base::PathService::Override(chrome::DIR_DEFAULT_DOWNLOADS_SAFE,
dir_default_download_safe);
}
}
void OverrideUserDataDir(CefSettings* settings,
const base::CommandLine* command_line) {
const base::FilePath& user_data_path =
GetUserDataPath(settings, command_line);
base::PathService::Override(chrome::DIR_USER_DATA, user_data_path);
// Path used for crash dumps.
base::PathService::Override(chrome::DIR_CRASH_DUMPS, user_data_path);
// Path used for spell checking dictionary files.
base::PathService::OverrideAndCreateIfNeeded(
chrome::DIR_APP_DICTIONARIES,
user_data_path.Append(FILE_PATH_LITERAL("Dictionaries")),
false, // May not be an absolute path.
true); // Create if necessary.
}
// Same as ui::ResourceBundle::IsScaleFactorSupported.
bool IsScaleFactorSupported(ui::ResourceScaleFactor scale_factor) {
const auto& supported_scale_factors = ui::GetSupportedResourceScaleFactors();
return std::find(supported_scale_factors.begin(),
supported_scale_factors.end(),
scale_factor) != supported_scale_factors.end();
}
#if BUILDFLAG(IS_LINUX)
void OverrideAssetPath() {
Dl_info dl_info;
if (dladdr(reinterpret_cast<const void*>(&OverrideAssetPath), &dl_info)) {
base::FilePath path = base::FilePath(dl_info.dli_fname).DirName();
base::PathService::Override(base::DIR_ASSETS, path);
}
}
#endif
} // namespace resource_util