mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-19 13:07:55 +00:00
113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2011-2014 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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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include "Constants.hpp"
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#include "RoutingTable.hpp"
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#include "Utils.hpp"
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namespace ZeroTier {
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std::string RoutingTable::Entry::toString() const
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{
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char tmp[1024];
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Utils::snprintf(tmp,sizeof(tmp),"%s %s %s %d",destination.toString().c_str(),((gateway) ? gateway.toIpString().c_str() : "<link>"),device,metric);
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return std::string(tmp);
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}
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bool RoutingTable::Entry::operator==(const Entry &re) const
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{
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return ((destination == re.destination)&&(gateway == re.gateway)&&(strcmp(device,re.device) == 0)&&(metric == re.metric));
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}
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bool RoutingTable::Entry::operator<(const Entry &re) const
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{
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if (destination < re.destination)
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return true;
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else if (destination == re.destination) {
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if (gateway < re.gateway)
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return true;
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else if (gateway == re.gateway) {
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int tmp = (int)::strcmp(device,re.device);
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if (tmp < 0)
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return true;
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else if (tmp == 0)
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return (metric < re.metric);
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}
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}
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return false;
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}
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RoutingTable::RoutingTable()
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{
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}
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RoutingTable::~RoutingTable()
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{
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}
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uint64_t RoutingTable::networkEnvironmentFingerprint(const std::vector<std::string> &ignoreInterfaces) const
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{
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uint64_t fp = 0;
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std::vector<Entry> rtab(get());
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for(std::vector<Entry>::const_iterator re(rtab.begin());re!=rtab.end();++re) {
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bool skip = false;
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for(std::vector<std::string>::const_iterator ii(ignoreInterfaces.begin());ii!=ignoreInterfaces.end();++ii) {
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if (*ii == re->device) {
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skip = true;
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break;
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}
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}
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if (skip)
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continue;
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++fp;
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if (re->destination.isV4()) {
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fp = Utils::sdbmHash(re->destination.rawIpData(),4,fp);
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fp = Utils::sdbmHash((uint16_t)re->destination.netmaskBits(),fp);
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} else if (re->destination.isV6()) {
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fp = Utils::sdbmHash(re->destination.rawIpData(),16,fp);
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fp = Utils::sdbmHash((uint16_t)re->destination.netmaskBits(),fp);
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}
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if (re->gateway.isV4()) {
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fp = Utils::sdbmHash(re->gateway.rawIpData(),4,fp);
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fp = Utils::sdbmHash((uint16_t)re->gateway.netmaskBits(),fp);
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} else if (re->gateway.isV6()) {
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fp = Utils::sdbmHash(re->gateway.rawIpData(),16,fp);
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fp = Utils::sdbmHash((uint16_t)re->gateway.netmaskBits(),fp);
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}
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fp = Utils::sdbmHash(re->device,fp);
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fp = Utils::sdbmHash((uint32_t)re->metric,fp);
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}
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return fp;
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}
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} // namespace ZeroTier
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