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-/*
- * ZeroTier One - Network Virtualization Everywhere
- * Copyright (C) 2011-2015 ZeroTier, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef ZT_JSONDB_HPP
-#define ZT_JSONDB_HPP
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <string>
-#include <map>
-#include <stdexcept>
-#include <vector>
-#include <algorithm>
-
-#include "../node/Constants.hpp"
-#include "../node/Utils.hpp"
-#include "../node/InetAddress.hpp"
-#include "../node/Mutex.hpp"
-#include "../ext/json/json.hpp"
-#include "../osdep/OSUtils.hpp"
-#include "../osdep/Http.hpp"
-#include "../osdep/Thread.hpp"
-
-namespace ZeroTier {
-
-/**
- * Hierarchical JSON store that persists into the filesystem or via HTTP
- */
-class JSONDB
-{
-public:
- JSONDB(const std::string &basePath);
-
- bool writeRaw(const std::string &n,const std::string &obj);
-
- bool put(const std::string &n,const nlohmann::json &obj);
-
- inline bool put(const std::string &n1,const std::string &n2,const nlohmann::json &obj) { return this->put((n1 + "/" + n2),obj); }
- inline bool put(const std::string &n1,const std::string &n2,const std::string &n3,const nlohmann::json &obj) { return this->put((n1 + "/" + n2 + "/" + n3),obj); }
- inline bool put(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const nlohmann::json &obj) { return this->put((n1 + "/" + n2 + "/" + n3 + "/" + n4),obj); }
- inline bool put(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const std::string &n5,const nlohmann::json &obj) { return this->put((n1 + "/" + n2 + "/" + n3 + "/" + n4 + "/" + n5),obj); }
-
- const nlohmann::json &get(const std::string &n);
-
- inline const nlohmann::json &get(const std::string &n1,const std::string &n2) { return this->get((n1 + "/" + n2)); }
- inline const nlohmann::json &get(const std::string &n1,const std::string &n2,const std::string &n3) { return this->get((n1 + "/" + n2 + "/" + n3)); }
- inline const nlohmann::json &get(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4) { return this->get((n1 + "/" + n2 + "/" + n3 + "/" + n4)); }
- inline const nlohmann::json &get(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const std::string &n5) { return this->get((n1 + "/" + n2 + "/" + n3 + "/" + n4 + "/" + n5)); }
-
- void erase(const std::string &n);
-
- inline void erase(const std::string &n1,const std::string &n2) { this->erase(n1 + "/" + n2); }
- inline void erase(const std::string &n1,const std::string &n2,const std::string &n3) { this->erase(n1 + "/" + n2 + "/" + n3); }
- inline void erase(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4) { this->erase(n1 + "/" + n2 + "/" + n3 + "/" + n4); }
- inline void erase(const std::string &n1,const std::string &n2,const std::string &n3,const std::string &n4,const std::string &n5) { this->erase(n1 + "/" + n2 + "/" + n3 + "/" + n4 + "/" + n5); }
-
- template<typename F>
- inline void filter(const std::string &prefix,F func)
- {
- while (!_ready) {
- Thread::sleep(250);
- _ready = _reload(_basePath,std::string());
- }
-
- for(std::map<std::string,_E>::iterator i(_db.lower_bound(prefix));i!=_db.end();) {
- if ((i->first.length() >= prefix.length())&&(!memcmp(i->first.data(),prefix.data(),prefix.length()))) {
- if (!func(i->first,get(i->first))) {
- std::map<std::string,_E>::iterator i2(i); ++i2;
- this->erase(i->first);
- i = i2;
- } else ++i;
- } else break;
- }
- }
-
- inline bool operator==(const JSONDB &db) const { return ((_basePath == db._basePath)&&(_db == db._db)); }
- inline bool operator!=(const JSONDB &db) const { return (!(*this == db)); }
-
-private:
- bool _reload(const std::string &p,const std::string &b);
- bool _isValidObjectName(const std::string &n);
- std::string _genPath(const std::string &n,bool create);
-
- struct _E
- {
- nlohmann::json obj;
- inline bool operator==(const _E &e) const { return (obj == e.obj); }
- inline bool operator!=(const _E &e) const { return (obj != e.obj); }
- };
-
- InetAddress _httpAddr;
- std::string _basePath;
- std::map<std::string,_E> _db;
- volatile bool _ready;
-};
-
-} // namespace ZeroTier
-
-#endif