mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-23 23:02:23 +00:00
139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2012-2013 ZeroTier Networks LLC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef ZT_SOFTWAREUPDATER_HPP
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#define ZT_SOFTWAREUPDATER_HPP
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#include <stdint.h>
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#include "Constants.hpp"
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#include "Mutex.hpp"
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#include "Utils.hpp"
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#include "HttpClient.hpp"
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#include "Defaults.hpp"
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namespace ZeroTier {
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class RuntimeEnvironment;
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/**
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* Software updater
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*/
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class SoftwareUpdater
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{
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public:
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SoftwareUpdater(const RuntimeEnvironment *renv);
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~SoftwareUpdater();
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/**
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* Called on each version message from a peer
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*
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* If a peer has a newer version, that causes an update to be started.
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*
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* @param vmaj Peer's major version
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* @param vmin Peer's minor version
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* @param rev Peer's revision
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*/
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inline void sawRemoteVersion(unsigned int vmaj,unsigned int vmin,unsigned int rev)
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{
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const uint64_t tmp = packVersion(vmaj,vmin,rev);
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if (tmp > _myVersion) {
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Mutex::Lock _l(_lock);
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if ((_status == UPDATE_STATUS_IDLE)&&(!_die)&&(ZT_DEFAULTS.updateLatestNfoURL.length())) {
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const uint64_t now = Utils::now();
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if ((now - _lastUpdateAttempt) >= ZT_UPDATE_MIN_INTERVAL) {
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_lastUpdateAttempt = now;
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_status = UPDATE_STATUS_GETTING_NFO;
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HttpClient::GET(ZT_DEFAULTS.updateLatestNfoURL,HttpClient::NO_HEADERS,ZT_UPDATE_HTTP_TIMEOUT,&_cbHandleGetLatestVersionInfo,this);
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}
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}
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}
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}
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/**
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* Check for updates now regardless of last check time or version
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*
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* This only starts a check if one is not in progress. Otherwise it does
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* nothing.
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*/
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inline void checkNow()
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{
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Mutex::Lock _l(_lock);
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if (_status == UPDATE_STATUS_IDLE) {
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_lastUpdateAttempt = Utils::now();
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_status = UPDATE_STATUS_GETTING_NFO;
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HttpClient::GET(ZT_DEFAULTS.updateLatestNfoURL,HttpClient::NO_HEADERS,ZT_UPDATE_HTTP_TIMEOUT,&_cbHandleGetLatestVersionInfo,this);
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}
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}
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/**
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* Check for updates now if it's been longer than ZT_UPDATE_MAX_INTERVAL
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*
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* This is called periodically from the main loop.
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*/
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inline void checkIfMaxIntervalExceeded(uint64_t now)
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{
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if ((now - _lastUpdateAttempt) >= ZT_UPDATE_MAX_INTERVAL)
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checkNow();
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}
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/**
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* Pack three-component version into a 64-bit integer
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*
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* @param vmaj Major version (0..65535)
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* @param vmin Minor version (0..65535)
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* @param rev Revision (0..65535)
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* @return Version packed into an easily comparable 64-bit integer
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*/
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static inline uint64_t packVersion(unsigned int vmaj,unsigned int vmin,unsigned int rev)
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throw()
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{
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return ( ((uint64_t)(vmaj & 0xffff) << 32) | ((uint64_t)(vmin & 0xffff) << 16) | (uint64_t)(rev & 0xffff) );
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}
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private:
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static void _cbHandleGetLatestVersionInfo(void *arg,int code,const std::string &url,bool onDisk,const std::string &body);
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static void _cbHandleGetLatestVersionBinary(void *arg,int code,const std::string &url,bool onDisk,const std::string &body);
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const RuntimeEnvironment *_r;
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const uint64_t _myVersion;
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volatile uint64_t _lastUpdateAttempt;
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volatile enum {
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UPDATE_STATUS_IDLE,
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UPDATE_STATUS_GETTING_NFO,
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UPDATE_STATUS_GETTING_FILE
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} _status;
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volatile bool _die;
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Address _signedBy;
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std::string _signature;
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Mutex _lock;
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};
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} // namespace ZeroTier
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#endif
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