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133 changes: 133 additions & 0 deletions
133
src/main/java/horse/wtf/nzyme/bandits/trackers/trackerlogic/ChannelDesignator.java
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| /* | ||
| * This file is part of nzyme. | ||
| * | ||
| * nzyme 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. | ||
| * | ||
| * nzyme 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 nzyme. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| package horse.wtf.nzyme.bandits.trackers.trackerlogic; | ||
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| import com.google.common.base.Joiner; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.util.concurrent.ThreadFactoryBuilder; | ||
| import horse.wtf.nzyme.dot11.probes.Dot11MonitorProbe; | ||
| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
|
|
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.atomic.AtomicBoolean; | ||
| import java.util.concurrent.atomic.AtomicReference; | ||
|
|
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| public class ChannelDesignator { | ||
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| private static final Logger LOG = LogManager.getLogger(ChannelDesignator.class); | ||
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| private static final short SWEEP_BREAK = 5; | ||
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| public enum DESIGNATION_STATUS { | ||
| LOCKED, | ||
| UNLOCKED, | ||
| SWEEPING | ||
| } | ||
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| private final Dot11MonitorProbe probe; | ||
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| private final AtomicReference<List<Integer>> designatedChannels; | ||
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| private final AtomicBoolean contactDuringCycle; | ||
| private final AtomicReference<DESIGNATION_STATUS> status; | ||
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| private short loopCount; | ||
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| public ChannelDesignator(Dot11MonitorProbe probe) { | ||
| this.probe = probe; | ||
| this.contactDuringCycle = new AtomicBoolean(false); | ||
| this.status = new AtomicReference<>(DESIGNATION_STATUS.UNLOCKED); | ||
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| // Start with the default/configured channels of the underlying probe. | ||
| this.designatedChannels = new AtomicReference<>(new ArrayList<>(probe.getConfiguration().channels())); | ||
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| // Periodically designate channels for ChannelHopper. | ||
| Executors.newSingleThreadScheduledExecutor(new ThreadFactoryBuilder() | ||
| .setDaemon(true) | ||
| .setNameFormat("channel-designator-%d") | ||
| .build()) | ||
| .scheduleAtFixedRate(this::designate, 0, 30, TimeUnit.SECONDS); | ||
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| LOG.info("Channel Designator is online."); | ||
| } | ||
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| public void onBanditTrace(int channel) { | ||
| this.contactDuringCycle.set(true); | ||
| if (!this.designatedChannels.get().contains(channel)) { | ||
| this.designatedChannels.get().add(channel); | ||
| } | ||
| } | ||
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| public DESIGNATION_STATUS getStatus() { | ||
| return status.get(); | ||
| } | ||
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| private void designate() { | ||
| boolean skip = false; | ||
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| // Is this a sweep run? | ||
| if (loopCount == SWEEP_BREAK-1) { | ||
| loopCount = 0; | ||
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| if (this.contactDuringCycle.get()) { | ||
| LOG.info("Starting designator sweep."); | ||
| this.probe.getChannelHopper().setChannels(probe.getConfiguration().channels()); | ||
| this.status.set(DESIGNATION_STATUS.SWEEPING); | ||
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| skip = true; | ||
| } | ||
| } | ||
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| if (!skip) { | ||
| if (contactDuringCycle.get()) { | ||
| // Contacts recorded during cycle. Designate all channels that a contact was made on. | ||
| LOG.info("Contacts recorded during cycle. Designating channels [{}].", Joiner.on(",").join(designatedChannels.get())); | ||
| this.probe.getChannelHopper().setChannels(intersectChannels(new ArrayList<>(designatedChannels.get()), probe.getConfiguration().channels())); | ||
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| this.status.set(DESIGNATION_STATUS.LOCKED); | ||
| } else { | ||
| // No contacts during cycle. Designate all configured channels. | ||
| LOG.info("No contacts during cycle. Resuming operations on configured probe channels."); | ||
| this.probe.getChannelHopper().setChannels(probe.getConfiguration().channels()); | ||
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| this.status.set(DESIGNATION_STATUS.UNLOCKED); | ||
| } | ||
| } | ||
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| // Reset for next cycle. | ||
| this.contactDuringCycle.set(false); | ||
| this.designatedChannels.get().clear(); | ||
| loopCount++; | ||
| } | ||
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| private List<Integer> intersectChannels(List<Integer> partial, List<Integer> complete) { | ||
| ImmutableList.Builder<Integer> result = new ImmutableList.Builder<>(); | ||
| for (Integer x : partial) { | ||
| if (complete.contains(x)) { | ||
| result.add(x); | ||
| } | ||
| } | ||
|
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| return result.build(); | ||
| } | ||
|
|
||
| } |
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