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Diffstat (limited to 'osdep/TestEthernetTap.hpp')
| -rw-r--r-- | osdep/TestEthernetTap.hpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/osdep/TestEthernetTap.hpp b/osdep/TestEthernetTap.hpp new file mode 100644 index 00000000..6ccf92f3 --- /dev/null +++ b/osdep/TestEthernetTap.hpp @@ -0,0 +1,161 @@ +/* + * ZeroTier One - Network Virtualization Everywhere + * Copyright (C) 2011-2018 ZeroTier, Inc. https://www.zerotier.com/ + * + * 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/>. + * + * -- + * + * You can be released from the requirements of the license by purchasing + * a commercial license. Buying such a license is mandatory as soon as you + * develop commercial closed-source software that incorporates or links + * directly against ZeroTier software without disclosing the source code + * of your own application. + */ + +#ifndef ZT_TESTETHERNETTAP_HPP +#define ZT_TESTETHERNETTAP_HPP + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <string> +#include <vector> +#include <stdexcept> +#include <set> + +#include "../node/Constants.hpp" +#include "../node/InetAddress.hpp" +#include "../node/MulticastGroup.hpp" +#include "../node/Mutex.hpp" +#include "../node/Utils.hpp" +#include "../osdep/OSUtils.hpp" + +namespace ZeroTier { + +/** + * Dummy test Ethernet tap that does not actually open a device on the system + */ +class TestEthernetTap +{ +public: + TestEthernetTap( + const char *homePath, + const MAC &mac, + unsigned int mtu, + unsigned int metric, + uint64_t nwid, + const char *friendlyName, + void (*handler)(void *,void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int), + void *arg) : + _nwid(nwid), + _dev("zt_test_"), + _enabled(true) + { + char tmp[32]; + OSUtils::ztsnprintf(tmp,sizeof(tmp),"%.16llx",(unsigned long long)_nwid); + _dev.append(tmp); +#ifdef ZT_TEST_TAP_REPORT_TO + _reportTo.fromString(ZT_TEST_TAP_REPORT_TO); + if (_reportTo.ss_family == AF_INET) + _reportsock = socket(AF_INET,SOCK_DGRAM,0); + else if (_reportTo.ss_family == AF_INET6) + _reportsock = socket(AF_INET6,SOCK_DGRAM,0); + else _reportsock = -1; +#endif + } + + ~TestEthernetTap() + { +#ifdef ZT_TEST_TAP_REPORT_TO + if (_reportsock >= 0) + close(_reportsock); +#endif + } + + inline void setEnabled(bool en) { _enabled = en; } + inline bool enabled() const { return _enabled; } + + inline bool addIp(const InetAddress &ip) + { + Mutex::Lock _l(_lock); + _ips.insert(ip); + return true; + } + + inline bool removeIp(const InetAddress &ip) + { + Mutex::Lock _l(_lock); + _ips.erase(ip); + return true; + } + + inline std::vector<InetAddress> ips() const + { + Mutex::Lock _l(_lock); + return std::vector<InetAddress>(_ips.begin(),_ips.end()); + } + + inline void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len) + { +#ifdef ZT_TEST_TAP_REPORT_TO + char tmp[10000]; + if ((_reportsock >= 0)&&(len < (sizeof(tmp) - 22))) { + const uint64_t nwid2 = Utils::hton(_nwid); + memcpy(tmp,&nwid2,8); + from.copyTo(tmp + 8,6); + to.copyTo(tmp + 14,6); + const uint16_t etherType2 = Utils::hton((uint16_t)etherType); + memcpy(tmp + 20,ðerType2,2); + memcpy(tmp + 22,data,len); + sendto(_reportsock,tmp,len + 22,0,reinterpret_cast<const struct sockaddr *>(&_reportTo),(_reportTo.ss_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)); + } +#endif + } + + inline std::string deviceName() const + { + return _dev; + } + + inline void setFriendlyName(const char *friendlyName) + { + } + + inline void scanMulticastGroups(std::vector<MulticastGroup> &added,std::vector<MulticastGroup> &removed) + { + } + + inline void setMtu(unsigned int mtu) + { + } + +private: + uint64_t _nwid; + std::string _dev; + std::set<InetAddress> _ips; + InetAddress _reportTo; +#ifdef ZT_TEST_TAP_REPORT_TO + int _reportsock; +#endif + bool _enabled; + Mutex _lock; +}; + +} // namespace ZeroTier + +#endif |