+ // -------------------------------------------------------------------------------------------------------------
+ // ------------ # Code for extracting traffic generated by a device within x seconds of a trigger # ------------
+ // Paths to input and output files (consider supplying these as arguments instead) and IP of the device for
+ // which traffic is to be extracted:
+ // D-Link July 26 experiment
+ final String inputPcapFile = "/Users/varmarken/temp/UCI IoT Project/experiments/2018-07/dlink/dlink.wlan1.local.pcap";
+ final String outputPcapFile = "/Users/varmarken/temp/UCI IoT Project/experiments/2018-07/dlink/dlink-processed.pcap";
+ final String triggerTimesFile = "/Users/varmarken/temp/UCI IoT Project/experiments/2018-07/dlink/dlink-july-26-2018.timestamps";
+ final String deviceIp = "192.168.1.246";
+ // TP-Link July 25 experiment
+// final String inputPcapFile = "/Users/varmarken/temp/UCI IoT Project/experiments/2018-07/tplink/tplink.wlan1.local.pcap";
+// final String outputPcapFile = "/Users/varmarken/temp/UCI IoT Project/experiments/2018-07/tplink/tplink-processed.pcap";
+// final String triggerTimesFile = "/Users/varmarken/temp/UCI IoT Project/experiments/2018-07/tplink/tplink-july-25-2018.timestamps";
+// final String deviceIp = "192.168.1.159";
+
+ TriggerTimesFileReader ttfr = new TriggerTimesFileReader();
+ List<Instant> triggerTimes = ttfr.readTriggerTimes(triggerTimesFile, false);
+ TriggerTrafficExtractor tte = new TriggerTrafficExtractor(inputPcapFile, triggerTimes, deviceIp);
+ final PcapDumper outputter = Pcaps.openDead(DataLinkType.EN10MB, 65536).dumpOpen(outputPcapFile);
+ DnsMap dnsMap = new DnsMap();
+ TcpReassembler tcpReassembler = new TcpReassembler();
+ tte.performExtraction(pkt -> {
+ try {
+ outputter.dump(pkt);
+ } catch (NotOpenException e) {
+ e.printStackTrace();
+ }
+ }, dnsMap, tcpReassembler);
+ outputter.flush();
+ outputter.close();
+
+ // Extract all conversations present in the filtered trace.
+ List<Conversation> allConversations = tcpReassembler.getTcpConversations();
+ // Group conversations by hostname.
+ Map<String, List<Conversation>> convsByHostname = TcpConversationUtils.groupConversationsByHostname(allConversations, dnsMap);
+ System.out.println("Grouped conversations by hostname.");
+ // For each hostname, count the frequencies of packet lengths exchanged with that hostname.
+ final Map<String, Map<Integer, Integer>> pktLenFreqsByHostname = new HashMap<>();
+ convsByHostname.forEach((host, convs) -> pktLenFreqsByHostname.put(host, TcpConversationUtils.countPacketLengthFrequencies(convs)));
+ System.out.println("Counted frequencies of packet lengths exchanged with each hostname.");
+ // For each hostname, count the frequencies of packet sequences (i.e., count how many conversations exchange a
+ // sequence of packets of some specific lengths).
+ final Map<String, Map<String, Integer>> pktSeqFreqsByHostname = new HashMap<>();
+ convsByHostname.forEach((host, convs) -> pktSeqFreqsByHostname.put(host, TcpConversationUtils.countPacketSequenceFrequencies(convs)));
+ System.out.println("Counted frequencies of packet sequences exchanged with each hostname.");
+ // For each hostname, count frequencies of packet pairs exchanged with that hostname across all conversations
+ final Map<String, Map<String, Integer>> pktPairFreqsByHostname =
+ TcpConversationUtils.countPacketPairFrequenciesByHostname(allConversations, dnsMap);
+ System.out.println("Counted frequencies of packet pairs per hostname");
+ // -------------------------------------------------------------------------------------------------------------
+ // -------------------------------------------------------------------------------------------------------------