+ // Print out all the pairs into a file for ON events
+ File fileOnEvents = new File(onPairsPath);
+ PrintWriter pwOn = null;
+ try {
+ pwOn = new PrintWriter(fileOnEvents);
+ } catch(Exception ex) {
+ ex.printStackTrace();
+ }
+ for(Map.Entry<String, Map<String, List<Conversation>>> entry : ons.entrySet()) {
+ Map<String, List<Conversation>> seqsToConvs = entry.getValue();
+ for(Map.Entry<String, List<Conversation>> entryConv : seqsToConvs.entrySet()) {
+ List<Conversation> listConv = entryConv.getValue();
+ // Just get the first Conversation because all Conversations in this group
+ // should have the same pairs of Application Data.
+ for(Conversation conv : listConv) {
+ // Process only if it is a TLS packet
+ if (conv.isTls()) {
+ List<PcapPacket> tlsAppDataList = conv.getTlsApplicationDataPackets();
+ // Loop and print out packets
+ int count = 0;
+ // The direction of the first packet
+ Conversation.Direction firstDir = null;
+ // The length of the first packet
+ int firstLen = 0;
+ for (PcapPacket pcap : tlsAppDataList) {
+ boolean isPair = false;
+ if (count % 2 == 0) {
+ firstDir = conv.getDirection(pcap);
+ firstLen = pcap.length();
+ } else {// count%2 == 1
+ if(conv.getDirection(pcap) != firstDir) {
+ isPair = true;
+ pwOn.println(firstLen + ", " + pcap.length());
+ //System.out.println(firstDir + ", " + conv.getDirection(pcap));
+ //System.out.println(firstLen + ", " + pcap.length());
+ }
+ }
+ count++;
+ // If we can't create a pair then just pad it with 0
+ if (count == tlsAppDataList.size() && !isPair) {
+ pwOn.println(firstLen + ", 0");
+ }
+ }
+ } else { // Non-TLS conversations
+ List<PcapPacket> packetList = conv.getPackets();
+ // Loop and print out packets
+ int count = 0;
+ // The direction of the first packet
+ Conversation.Direction firstDir = null;
+ // The length of the first packet
+ int firstLen = 0;
+ for (PcapPacket pcap : packetList) {
+ boolean isPair = false;
+ if (count % 2 == 0) {
+ firstDir = conv.getDirection(pcap);
+ firstLen = pcap.length();
+ } else {// count%2 == 1
+ if(conv.getDirection(pcap) != firstDir) {
+ isPair = true;
+ pwOn.println(firstLen + ", " + pcap.length());
+ System.out.println(firstDir + ", " + conv.getDirection(pcap));
+ System.out.println(firstLen + ", " + pcap.length());
+ }
+ }
+ count++;
+ // If we can't create a pair then just pad it with 0
+ if (count == packetList.size() && !isPair) {
+ pwOn.println(firstLen + ", 0");
+ }
+ }
+ }
+ }
+ }
+ }
+ pwOn.close();
+
+ // Print out all the pairs into a file for ON events
+ File fileOffEvents = new File(offPairsPath);
+ PrintWriter pwOff = null;
+ try {
+ pwOff = new PrintWriter(fileOffEvents);
+ } catch(Exception ex) {
+ ex.printStackTrace();
+ }
+ for(Map.Entry<String, Map<String, List<Conversation>>> entry : offs.entrySet()) {
+ Map<String, List<Conversation>> seqsToConvs = entry.getValue();
+ for(Map.Entry<String, List<Conversation>> entryConv : seqsToConvs.entrySet()) {
+ List<Conversation> listConv = entryConv.getValue();
+ // Just get the first Conversation because all Conversations in this group
+ // should have the same pairs of Application Data.
+ for(Conversation conv : listConv) {
+ // Process only if it is a TLS packet
+ if (conv.isTls()) {
+ List<PcapPacket> tlsAppDataList = conv.getTlsApplicationDataPackets();
+ // Loop and print out packets
+ int count = 0;
+ // The direction of the first packet
+ Conversation.Direction firstDir = null;
+ // The length of the first packet
+ int firstLen = 0;
+ for (PcapPacket pcap : tlsAppDataList) {
+ boolean isPair = false;
+ if (count % 2 == 0) {
+ firstDir = conv.getDirection(pcap);
+ firstLen = pcap.length();
+ } else {// count%2 == 1
+ if(conv.getDirection(pcap) != firstDir) {
+ isPair = true;
+ pwOff.println(firstLen + ", " + pcap.length());
+ System.out.println(firstDir + ", " + conv.getDirection(pcap));
+ System.out.println(firstLen + ", " + pcap.length());
+ }
+ }
+ count++;
+ // If we can't create a pair then just pad it with 0
+ if (count == tlsAppDataList.size() && !isPair) {
+ pwOff.println(firstLen + ", 0");
+ }
+
+ }
+ } else { // Non-TLS conversations
+ List<PcapPacket> packetList = conv.getPackets();
+ // Loop and print out packets
+ int count = 0;
+ // The direction of the first packet
+ Conversation.Direction firstDir = null;
+ // The length of the first packet
+ int firstLen = 0;
+ for (PcapPacket pcap : packetList) {
+ boolean isPair = false;
+ if (count % 2 == 0) {
+ firstDir = conv.getDirection(pcap);
+ firstLen = pcap.length();
+ } else {// count%2 == 1
+ if(conv.getDirection(pcap) != firstDir) {
+ isPair = true;
+ pwOff.println(firstLen + ", " + pcap.length());
+ System.out.println(firstDir + ", " + conv.getDirection(pcap));
+ System.out.println(firstLen + ", " + pcap.length());
+ }
+ }
+ count++;
+ // If we can't create a pair then just pad it with 0
+ if (count == packetList.size() && !isPair) {
+ pwOff.println(firstLen + ", 0");
+ }
+ }
+ }
+ }
+ }
+ }
+ pwOff.close();
+
+
+// // ================================================================================================
+// // <<< Some work-in-progress/explorative code that extracts a "representative" sequence >>>
+// //
+// // Currently need to know relevant hostname in advance :(
+// String hostname = "events.tplinkra.com";
+//// String hostname = "rfe-us-west-1.dch.dlink.com";
+// // Conversations with 'hostname' for ON events.
+// List<Conversation> onsForHostname = new ArrayList<>();
+// // Conversations with 'hostname' for OFF events.
+// List<Conversation> offsForHostname = new ArrayList<>();
+// // "Unwrap" sequence groupings in ons/offs maps.
+// ons.get(hostname).forEach((k,v) -> onsForHostname.addAll(v));
+// offs.get(hostname).forEach((k,v) -> offsForHostname.addAll(v));
+//
+//
+// Map<String, List<Conversation>> onsForHostnameGroupedByTlsAppDataSequence = TcpConversationUtils.groupConversationsByTlsApplicationDataPacketSequence(onsForHostname);
+//
+//
+// // Extract representative sequence for ON and OFF by providing the list of conversations with
+// // 'hostname' observed for each event type (the training data).
+// SequenceExtraction seqExtraction = new SequenceExtraction();
+//// ExtractedSequence extractedSequenceForOn = seqExtraction.extract(onsForHostname);
+//// ExtractedSequence extractedSequenceForOff = seqExtraction.extract(offsForHostname);
+//
+// ExtractedSequence extractedSequenceForOn = seqExtraction.extractByTlsAppData(onsForHostname);
+// ExtractedSequence extractedSequenceForOff = seqExtraction.extractByTlsAppData(offsForHostname);
+//
+// // Let's check how many ONs align with OFFs and vice versa (that is, how many times an event is incorrectly
+// // labeled).
+// int onsLabeledAsOff = 0;
+// Integer[] representativeOnSeq = TcpConversationUtils.getPacketLengthSequence(extractedSequenceForOn.getRepresentativeSequence());
+// Integer[] representativeOffSeq = TcpConversationUtils.getPacketLengthSequence(extractedSequenceForOff.getRepresentativeSequence());
+// SequenceAlignment<Integer> seqAlg = seqExtraction.getAlignmentAlgorithm();
+// for (Conversation c : onsForHostname) {
+// Integer[] onSeq = TcpConversationUtils.getPacketLengthSequence(c);
+// if (seqAlg.calculateAlignment(representativeOffSeq, onSeq) <= extractedSequenceForOff.getMaxAlignmentCost()) {
+// onsLabeledAsOff++;
+// }
+// }
+// int offsLabeledAsOn = 0;
+// for (Conversation c : offsForHostname) {
+// Integer[] offSeq = TcpConversationUtils.getPacketLengthSequence(c);
+// if (seqAlg.calculateAlignment(representativeOnSeq, offSeq) <= extractedSequenceForOn.getMaxAlignmentCost()) {
+// offsLabeledAsOn++;
+// }
+// }
+// System.out.println("");
+// // ================================================================================================
+//
+//
+// // -------------------------------------------------------------------------------------------------------------
+// // -------------------------------------------------------------------------------------------------------------