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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2011-2015 ZeroTier Networks
*
* 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/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_NETWORKCONFIGMASTER_HPP
#define ZT_NETWORKCONFIGMASTER_HPP
#include "Constants.hpp"
#ifdef ZT_ENABLE_NETCONF_MASTER
#include <stdint.h>
#include <string>
#include <map>
#include <vector>
#include "Address.hpp"
#include "Dictionary.hpp"
#include "Mutex.hpp"
#include "InetAddress.hpp"
#include <hiredis/hiredis.h>
namespace ZeroTier {
class RuntimeEnvironment;
/**
* Network configuration master -- responds to NETCONF requests
*
* This requires the 'hiredis' C library to build.
*/
class NetworkConfigMaster
{
public:
/**
* Create netconf master
*
* This doesn't connect to Redis until the first request is received.
*
* @param renv Runtime environment
* @param redisHost Hostname or IP of Redis server
* @param redisPort Redis IP port number
* @param redisPassword Redis AUTH password or NULL if none
* @param redisDatabaseNumber Redis database number (usually 0)
*/
NetworkConfigMaster(
const RuntimeEnvironment *renv,
const char *redisHost,
unsigned int redisPort,
const char *redisPassword,
unsigned int redisDatabaseNumber);
~NetworkConfigMaster();
/**
* Handle a network config request, sending replies if necessary
*
* This is a blocking call, so rate is limited by Redis. It will fail
* and log its failure if the Redis server is not available or times out.
*
* @param fromAddr Originating IP address
* @param packetId 64-bit packet ID
* @param member Originating peer ZeroTier address
* @param nwid 64-bit network ID
* @param metaData Meta-data bundled with request (empty if none)
* @param haveTimestamp Timestamp requesting peer has or 0 if none or not included
*/
void doNetworkConfigRequest(
const InetAddress &fromAddr,
uint64_t packetId,
const Address &member,
uint64_t nwid,
const Dictionary &metaData,
uint64_t haveTimestamp);
private:
// These assume _lock is locked
bool _reconnect();
bool _hgetall(const char *key,Dictionary &hdata);
bool _hmset(const char *key,const Dictionary &hdata);
bool _hget(const char *key,const char *hashKey,std::string &value);
bool _hset(const char *key,const char *hashKey,const char *value);
bool _get(const char *key,std::string &value);
bool _smembers(const char *key,std::vector<std::string> &sdata);
bool _initNewMember(uint64_t nwid,const Address &member,const Dictionary &metaData,Dictionary &memberRecord);
bool _generateNetconf(uint64_t nwid,const Address &member,const Dictionary &metaData,std::string &netconf,uint64_t &ts);
Mutex _lock;
std::string _redisHost;
std::string _redisPassword;
unsigned int _redisPort;
unsigned int _redisDatabaseNumber;
const RuntimeEnvironment *RR;
redisContext *_rc;
};
} // namespace ZeroTier
#endif // ZT_ENABLE_NETCONF_MASTER
#endif
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