Removing SmartPlugDetector.

[pingpong.git] / Code / Projects / SmartPlugDetector / src / main / java / edu / uci / iotproject / maclayer / MacLayerFlowPatternFinder.java

diff --git a/Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/maclayer/MacLayerFlowPatternFinder.java b/Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/maclayer/MacLayerFlowPatternFinder.java
deleted file mode 100644 (file)
index 6cca3ad..0000000
--- a/Code/Projects/SmartPlugDetector/src/main/java/edu/uci/iotproject/maclayer/MacLayerFlowPatternFinder.java
+++ /dev/null
@@ -1,102 +0,0 @@
-package edu.uci.iotproject.maclayer;
-
-import edu.uci.iotproject.FlowPattern;
-import org.pcap4j.core.NotOpenException;
-import org.pcap4j.core.PcapHandle;
-import org.pcap4j.core.PcapNativeException;
-import org.pcap4j.core.PcapPacket;
-import org.pcap4j.packet.RadiotapPacket;
-
-import java.io.EOFException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.TimeoutException;
-
-/**
- * Performs a search for {@link FlowPattern}
- * TODO: May want to create an abstract FlowPatternFinder and then derive MacLayer, TcpipLayer FlowPatternFinders from that one.
- *
- * @author Janus Varmarken
- */
-public class MacLayerFlowPatternFinder {
-
-    private final MacLayerFlowPattern mPattern;
-    private final PcapHandle mPcap;
-
-    public MacLayerFlowPatternFinder(PcapHandle pcap, MacLayerFlowPattern pattern) {
-        this.mPcap = Objects.requireNonNull(pcap,
-                String.format("Argument of type '%s' cannot be null", PcapHandle.class.getSimpleName()));
-        this.mPattern = Objects.requireNonNull(pattern,
-                String.format("Argument of type '%s' cannot be null", FlowPattern.class.getSimpleName()));
-    }
-
-    public void findFlowPattern() {
-        PcapPacket packet;
-        try {
-            // Packets matched to flow pattern searched for.
-            List<PcapPacket> patternPackets = new ArrayList<>();
-            while ((packet = mPcap.getNextPacketEx()) != null) {
-                RadiotapPacket radiotapPacket;
-                try {
-                    // Some packets throw an IAE with message "msi must be between 0 and 6 but is actually: 7"
-                    // when accessing the RadiotapPacket.
-                    radiotapPacket = packet.get(RadiotapPacket.class);
-                } catch (IllegalArgumentException iae) {
-                    System.out.println(iae.getMessage());
-                    continue;
-                }
-                if (radiotapPacket == null) {
-                    continue;
-                }
-                // Restart search if pattern not found within reasonable time frame (hardcoded for now).
-                if (patternPackets.size() > 0 && packet.getTimestamp().getEpochSecond() -
-                            patternPackets.get(patternPackets.size()-1).getTimestamp().getEpochSecond() > 2) {
-                    patternPackets = new ArrayList<>();
-                }
-
-                byte[] rawData = radiotapPacket.getPayload().getRawData();
-                // Search rawData for MAC of FlowPattern in sender/receiver section
-                // [TODO needs verification that this section is actually the sender/receiver section]
-                if (rawData.length < 16) {
-                    continue;
-                }
-                int prefixLength = mPattern.getMacPrefixRawBytes().length;
-                byte[] mac1 = Arrays.copyOfRange(rawData, 4, prefixLength < 6 ? 4 + prefixLength : 10);
-                byte[] mac2 = Arrays.copyOfRange(rawData, 10, prefixLength < 6 ? 10 + prefixLength : 16);
-                if (!Arrays.equals(mac1, mPattern.getMacPrefixRawBytes()) && !Arrays.equals(mac2, mPattern.getMacPrefixRawBytes())) {
-                    // MAC prefix not present in raw data.
-                    continue;
-                }
-                // Packet related to device associated with the pattern we are looking for.
-                int expectedLength = mPattern.getPacketLengthSequence().get(patternPackets.size());
-                if (packet.length() == expectedLength) {
-                    patternPackets.add(packet);
-                    if (patternPackets.size() == mPattern.getLength()) {
-                        // Full pattern found, declare success if packets are within some reasonable amount of time of
-                        // one another.
-                        // For now, we use a hardcoded value.
-                        if (patternPackets.get(patternPackets.size()-1).getTimestamp().getEpochSecond() -
-                                patternPackets.get(0).getTimestamp().getEpochSecond() < 5) {
-                            System.out.println(String.format("[ find ] Detected a COMPLETE MATCH of pattern '%s' at %s!",
-                                    mPattern.getPatternId(), patternPackets.get(0).getTimestamp().toString()));
-                        }
-                        // Reset search by resetting list.
-                        patternPackets = new ArrayList<>();
-                    }
-                } else {
-                    // Discard packet, not relevant to pattern.
-                    continue;
-                }
-            }
-        } catch (EOFException e) {
-            // TODO wait for, and print, results.
-        } catch (PcapNativeException|TimeoutException|NotOpenException e) {
-            e.printStackTrace();
-        }
-    }
-
-}
-
-