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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.
*/
#include "CrateManager.h"
#ifdef ENABLE_STORAGE_CRATES
#include <android-base/logging.h>
#include <android-base/stringprintf.h>
#include <android/log.h>
#include <errno.h>
#include <inttypes.h>
#include <libgen.h>
#include <stdint.h>
#include <string.h>
#include <sys/xattr.h>
#include <unistd.h>
#include <utils.h>
#include <fstream>
#include <functional>
#include <string>
#include "utils.h"
using android::base::StringPrintf;
namespace android {
namespace installd {
CrateManager::CrateManager(const char* uuid, userid_t userId, const std::string& packageName) {
mPackageName = packageName;
mRoot = create_data_user_ce_package_path(uuid, userId, (const char*)packageName.c_str());
mCratedFoldersRoot = StringPrintf("%s/crates", mRoot.c_str());
}
CrateManager::~CrateManager() {}
static std::string getValidatedCratedPath(std::string path) {
size_t pos = path.rfind("/");
if (pos == std::string::npos) {
return path;
}
return path.substr(pos + 1, path.length());
}
void CrateManager::traverseChildDir(const std::string& targetDir,
std::function<void(FTSENT*)>& onVisitChildDir) {
char* argv[] = {(char*)targetDir.c_str(), nullptr};
FTS* fts = fts_open(argv, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, nullptr);
if (fts == nullptr) {
PLOG(WARNING) << "Failed to fts_open " << targetDir;
return;
}
FTSENT* p;
while ((p = fts_read(fts)) != nullptr) {
switch (p->fts_info) {
case FTS_D:
if (p->fts_level == 1) {
onVisitChildDir(p);
}
break;
default:
break;
}
if (p->fts_level == 1) {
fts_set(fts, p, FTS_SKIP);
}
}
fts_close(fts);
}
void CrateManager::traverseAllPackagesForUser(
const std::optional<std::string>& uuid, userid_t userId,
std::function<void(FTSENT*)>& onHandlingPackage) {
const char* uuid_ = uuid ? uuid->c_str() : nullptr;
auto ce_path = create_data_user_ce_path(uuid_, userId);
traverseChildDir(ce_path, onHandlingPackage);
}
void CrateManager::createCrate(
CratedFolder cratedFolder,
std::function<void(CratedFolder, CrateMetadata&&)>& onCreateCrate) {
const char* path = cratedFolder->fts_path;
if (path == nullptr || *path == '\0') {
return;
}
CrateMetadata crateMetadata;
crateMetadata.uid = cratedFolder->fts_statp->st_uid;
crateMetadata.packageName = mPackageName;
crateMetadata.id = getValidatedCratedPath(path);
onCreateCrate(cratedFolder, std::move(crateMetadata));
}
void CrateManager::traverseAllCrates(std::function<void(CratedFolder, CrateMetadata&&)>& onCreateCrate) {
std::function<void(FTSENT*)> onVisitCrateDir = [&](FTSENT* cratedFolder) -> void {
createCrate(cratedFolder, onCreateCrate);
};
traverseChildDir(mCratedFoldersRoot, onVisitCrateDir);
}
#if CRATE_DEBUG
void CrateManager::dump(const CrateMetadata& CrateMetadata) {
LOG(DEBUG) << "CrateMetadata = {"
<< "uid : \"" << CrateMetadata.uid
<< "\", packageName : \"" << CrateMetadata.packageName
<< "\", id : \"" << CrateMetadata.id
<< "\"}";
}
#endif
} // namespace installd
} // namespace android
#endif // ENABLE_STORAGE_CRATES
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