1 package edu.uci.iotproject;
3 import edu.uci.iotproject.analysis.PcapPacketPair;
4 import edu.uci.iotproject.analysis.TcpConversationUtils;
5 import edu.uci.iotproject.analysis.TriggerTrafficExtractor;
6 import edu.uci.iotproject.io.TriggerTimesFileReader;
7 import org.pcap4j.core.*;
8 import org.pcap4j.packet.IpV4Packet;
9 import org.pcap4j.packet.namednumber.DataLinkType;
11 import java.io.EOFException;
12 import java.net.UnknownHostException;
13 import java.time.Instant;
15 import java.util.concurrent.TimeoutException;
18 * This is a system that reads PCAP files to compare
19 * patterns of DNS hostnames, packet sequences, and packet
20 * lengths with training data to determine certain events
21 * or actions for smart home devices.
23 * @author Janus Varmarken
24 * @author Rahmadi Trimananda (rtrimana@uci.edu)
30 public static void main(String[] args) throws PcapNativeException, NotOpenException, EOFException, TimeoutException, UnknownHostException {
31 // -------------------------------------------------------------------------------------------------------------
32 // Example/debug code for searching for a pattern at the MAC layer.
33 // String fileName = "./pcap/mac-tplink.local.pcapng";
36 // handle = Pcaps.openOffline(fileName, PcapHandle.TimestampPrecision.NANO);
37 // } catch (PcapNativeException pne) {
38 // handle = Pcaps.openOffline(fileName);
40 // Arrays.asList(1590, 1590, 1590, 1001, 337, 197, 636, 1311, 177) // Full pattern (all non-zero payload packets).
41 // MacLayerFlowPattern pattern = new MacLayerFlowPattern("TP_LINK_LOCAL_OFF_MAC", "50:c7:bf:33:1f:09", Arrays.asList(637, 1312));
42 // MacLayerFlowPatternFinder finder = new MacLayerFlowPatternFinder(handle, pattern);
43 // finder.findFlowPattern();
44 // -------------------------------------------------------------------------------------------------------------
46 // //final String fileName = args.length > 0 ? args[0] : "/home/rtrimana/pcap_processing/smart_home_traffic/Code/Projects/SmartPlugDetector/pcap/wlan1.local.dns.pcap";
47 // final String fileName = args.length > 0 ? args[0] : "/scratch/June-2018/TPLink/wlan1/tplink.wlan1.local.pcap";
48 // //final String fileName = args.length > 0 ? args[0] : "/scratch/June-2018/DLink/wlan1/dlink.wlan1.local.pcap";
49 // final String trainingFileName = "./pcap/TP_LINK_LOCAL_ON_SUBSET.pcap";
50 //// final String trainingFileName = "./pcap/TP_LINK_LOCAL_ON.pcap";
52 //// // ====== Debug code ======
54 // PcapHandle trainingPcap;
56 // handle = Pcaps.openOffline(fileName, PcapHandle.TimestampPrecision.NANO);
57 // trainingPcap = Pcaps.openOffline(trainingFileName, PcapHandle.TimestampPrecision.NANO);
58 // } catch (PcapNativeException pne) {
59 // handle = Pcaps.openOffline(fileName);
60 // trainingPcap = Pcaps.openOffline(trainingFileName);
63 //// // TODO: The followings are the way to extract multiple hostnames and their associated packet lengths lists
64 //// //List<String> list = new ArrayList<>();
65 //// //list.add("events.tplinkra.com");
66 //// //FlowPattern fp = new FlowPattern("TP_LINK_LOCAL_ON", list, trainingPcap);
67 //// //List<String> list2 = new ArrayList<>();
68 //// //list2.add("devs.tplinkcloud.com");
69 //// //list2.add("events.tplinkra.com");
70 //// //FlowPattern fp3 = new FlowPattern("TP_LINK_REMOTE_ON", list2, trainingPcap);
72 // FlowPattern fp = new FlowPattern("TP_LINK_LOCAL_ON", "events.tplinkra.com", trainingPcap);
73 // //FlowPattern fp = new FlowPattern("DLINK_LOCAL_ON", "rfe-us-west-1.dch.dlink.com", trainingPcap);
74 // FlowPatternFinder fpf = new FlowPatternFinder(handle, fp);
77 //// // ========================
80 PcapReader pcapReader = new PcapReader(args[0]);
81 PcapProcessingPipeline pipeline = new PcapProcessingPipeline(pcapReader);
82 TcpReassembler tcpReassembler = new TcpReassembler();
83 pipeline.addPcapPacketConsumer(tcpReassembler);
84 pipeline.executePipeline();
85 System.out.println("Pipeline terminated");
87 List<List<PcapPacketPair>> pairs = new ArrayList<>();
88 for (Conversation c : tcpReassembler.getTcpConversations()) {
89 pairs.add(TcpConversationUtils.extractPacketPairs(c));
94 // -------- 07-17-2018 --------
95 // Only consider packets to/from the TP-Link plug.
96 PcapReader pcapReader = new PcapReader(args[0], "ip host 192.168.1.159");
97 TcpReassembler tcpReassembler = new TcpReassembler();
99 while((packet = pcapReader.readNextPacket()) != null) {
100 tcpReassembler.consumePacket(packet);
102 // Now we have a set of reassembled TCP conversations.
103 List<Conversation> conversations = tcpReassembler.getTcpConversations();
104 for(Conversation c : conversations) {
105 List<PcapPacketPair> pairs = TcpConversationUtils.extractPacketPairs(c);
106 for (PcapPacketPair pair : pairs) {
108 // 1. discard packets that are not within X seconds after trigger time
109 // 2. conversations may be (are) with different servers - so need to plot in different plots, one per hostname?
113 // ----------------------------
116 // -------- 07-19-2018 --------
117 TriggerTimesFileReader ttfr = new TriggerTimesFileReader();
118 // List<Instant> triggerTimes = ttfr.readTriggerTimes("/Users/varmarken/Downloads/tplink-feb-13-2018.timestamps", false);
119 List<Instant> triggerTimes = ttfr.readTriggerTimes("/Users/varmarken/temp/UCI IoT Project/June2018 experiments/tplink/tplink-june-14-2018-timestamps.txt", false);
120 // String pcapFile = "/Users/varmarken/Development/Repositories/UCI/NetworkingGroup/smart_home_traffic/Code/Projects/SmartPlugDetector/pcap/wlan1.local.dns.pcap";
121 String pcapFile = "/Users/varmarken/temp/UCI IoT Project/June2018 experiments/tplink/tplink.wlan1.local.pcap";
122 String tpLinkPlugIp = "192.168.1.159";
123 TriggerTrafficExtractor tte = new TriggerTrafficExtractor(pcapFile, triggerTimes, tpLinkPlugIp);
124 // final PcapDumper outputter = Pcaps.openDead(DataLinkType.EN10MB, 65536).dumpOpen("/Users/varmarken/temp/traces/output/tplink-filtered.pcap");
125 final PcapDumper outputter = Pcaps.openDead(DataLinkType.EN10MB, 65536).dumpOpen("/Users/varmarken/temp/UCI IoT Project/June2018 experiments/tplink/tplink-filtered.pcap");
126 DnsMap dnsMap = new DnsMap();
127 TcpReassembler tcpReassembler = new TcpReassembler();
128 tte.performExtraction(pkt -> {
131 } catch (NotOpenException e) {
134 }, dnsMap, tcpReassembler);
140 for (Conversation c : tcpReassembler.getTcpConversations()) {
141 packets += c.getPackets().size();
142 packets += c.getSynPackets().size();
143 // only count the FIN packets, not the ACKs; every FinAckPair holds a FIN packet
144 packets += c.getFinAckPairs().size();
146 // Produces 271 packets for the Feb 13 experiment
147 // Applying filter: "(tcp and not tcp.len == 0 and not tcp.analysis.retransmission and not tcp.analysis.fast_retransmission) or (tcp.flags.syn == 1) or (tcp.flags.fin == 1)"
148 // to the file gives 295 packets, but there are 24 TCP-Out-Of-Order SYN/SYNACKs which are filtered as retransmissions in Conversation, so the numbers seem to match.
149 System.out.println("number of packets: " + packets);
152 List<List<PcapPacketPair>> pairs = new ArrayList<>();
153 for (Conversation c : tcpReassembler.getTcpConversations()) {
154 pairs.add(TcpConversationUtils.extractPacketPairs(c));
157 // Sort pairs according to timestamp of first packet of conversation for (debugging) convenience.
158 Collections.sort(pairs, (l1, l2) -> {
159 if (l1.get(0).getFirst().getTimestamp().isBefore(l2.get(0).getFirst().getTimestamp())) return -1;
160 else if (l2.get(0).getFirst().getTimestamp().isBefore(l1.get(0).getFirst().getTimestamp())) return 1;
164 System.out.println("list of pairs produced");
165 List<PcapPacketPair> eventstplinkraPairs = new ArrayList<>();
166 List<List<PcapPacketPair>> otherPairs = new ArrayList<>();
167 String hostname = "events.tplinkra.com";
169 for (List<PcapPacketPair> lppp : pairs) {
170 if (lppp.size() < 1) {
174 IpV4Packet ipPacket = lppp.get(0).getFirst().get(IpV4Packet.class);
175 // If packets are associated with the hostname
176 if (dnsMap.isRelatedToCloudServer(ipPacket.getHeader().getSrcAddr().getHostAddress(), hostname) ||
177 dnsMap.isRelatedToCloudServer(ipPacket.getHeader().getDstAddr().getHostAddress(), hostname)) {
178 eventstplinkraPairs.addAll(lppp);
180 // Pairs associated with different server
181 otherPairs.add(lppp);
184 System.out.println("number of empty list of packet pairs: " + emptyLists);
185 HashMap<String, Integer> pairCount = new HashMap<>();
186 for (PcapPacketPair ppp : eventstplinkraPairs) {
187 if (pairCount.containsKey(ppp.toString())) {
188 pairCount.put(ppp.toString(), pairCount.get(ppp.toString()) + 1);
190 pairCount.put(ppp.toString(), 1);
193 System.out.println("pairCount map built");
195 // Build map containing frequencies of packet lengths exchanged with events.tplinkra.com as well as a map with
196 // the frequencies of specific sequences of packet lengths for the same hostname
197 HashMap<Integer, Integer> eventstplinkraPacketLengthFreqMap = new HashMap<>();
198 HashMap<String, Integer> eventstplinkraPacketSequenceFreqMap = new HashMap<>();
199 for (Conversation c : tcpReassembler.getTcpConversations()) {
200 if (c.getPackets().size() == 0) {
203 PcapPacket firstPacket = c.getPackets().get(0);
204 IpV4Packet firstPacketIp = firstPacket.get(IpV4Packet.class);
205 if (!dnsMap.isRelatedToCloudServer(firstPacketIp.getHeader().getSrcAddr().getHostAddress(), hostname) &&
206 !dnsMap.isRelatedToCloudServer(firstPacketIp.getHeader().getDstAddr().getHostAddress(), hostname)) {
209 // Update the packet length freq map
210 for (PcapPacket pp : c.getPackets()) {
211 eventstplinkraPacketLengthFreqMap.merge(pp.length(), 1, (i1, i2) -> i1 + i2);
213 // Update the packet sequence freq map
214 StringBuilder sb = new StringBuilder();
215 for (PcapPacket pp : c.getPackets()) {
216 sb.append(pp.length() + " ");
218 eventstplinkraPacketSequenceFreqMap.merge(sb.toString(), 1, (i1, i2) -> i1+i2);
220 System.out.println("packet length frequency map created");
222 Map<String, List<Conversation>> hostnameConversationMap =
223 TcpConversationUtils.groupConversationsByHostname(tcpReassembler.getTcpConversations(), dnsMap);
224 System.out.println("hostnameConversationMap created");
225 // ----------------------------
231 // TP-Link MAC 50:c7:bf:33:1f:09 and usually IP 192.168.1.159 (remember to verify per file)