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// Copyright (C) 2019 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#define LOG_TAG "FuseUtils"
#include "include/libfuse_jni/FuseUtils.h"
#include <regex>
#include <string>
#include <vector>
#include "android-base/strings.h"
using std::string;
namespace mediaprovider {
namespace fuse {
bool containsMount(const string& path) {
// This method is called from lookup, so it's called rather frequently.
// Hence, we avoid concatenating the strings and we use 3 separate suffixes.
static const string prefix = "/storage/emulated/";
if (!android::base::StartsWithIgnoreCase(path, prefix)) {
return false;
}
size_t pos = path.find_first_of('/', prefix.length());
if (pos == std::string::npos) {
return false;
}
const string& path_suffix = path.substr(pos);
static const string android_suffix = "/Android";
static const string data_suffix = "/Android/data";
static const string obb_suffix = "/Android/obb";
return android::base::EqualsIgnoreCase(path_suffix, android_suffix) ||
android::base::EqualsIgnoreCase(path_suffix, data_suffix) ||
android::base::EqualsIgnoreCase(path_suffix, obb_suffix);
}
string getVolumeNameFromPath(const std::string& path) {
std::string volume_name = "";
if (!android::base::StartsWith(path, STORAGE_PREFIX)) {
volume_name = VOLUME_INTERNAL;
} else if (android::base::StartsWith(path, PRIMARY_VOLUME_PREFIX) || path == STORAGE_PREFIX) {
volume_name = VOLUME_EXTERNAL_PRIMARY;
} else {
// Use regex to extract volume name
std::regex volumeRegex(R"(/storage/([a-zA-Z0-9-]+)/)");
std::smatch match;
if (std::regex_search(path, match, volumeRegex)) {
volume_name = match[1].str();
// Convert to lowercase
std::transform(volume_name.begin(), volume_name.end(), volume_name.begin(), ::tolower);
}
}
return volume_name;
}
} // namespace fuse
} // namespace mediaprovider
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