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https://issues.apache.org/jira/browse/DRILL-7443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16979203#comment-16979203
]
ASF GitHub Bot commented on DRILL-7443:
---------------------------------------
arina-ielchiieva commented on pull request #1898: DRILL-7443: Enable PCAP
Plugin to Reassemble TCP Streams
URL: https://github.com/apache/drill/pull/1898#discussion_r349040898
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/pcap/decoder/TcpHandshake.java
##########
@@ -0,0 +1,118 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.drill.exec.store.pcap.decoder;
+
+/**
+ * This class is used to record the status of the TCP Handshake. Initially
this is used just to determine whether a session is open or closed, but
+ * future functionality could include SYN flood identification, or other
hackery with TCP flags.
+ */
+public class TcpHandshake {
+ boolean syn = false;
+
+ boolean synAck = false;
+
+ boolean ack = false;
+
+ boolean finAck = false;
+
+ boolean isConnected = false;
+
+ boolean isClosed = false;
+
+ long sessionID;
+
+ State currentSessionState = State.NONE;
+
+ enum State {
+ NONE, OPEN, CLOSED, CLOSE_WAIT, TIME_WAIT, SYN, SYNACK, FORCED_CLOSED,
FIN_WAIT
+ }
+
+ /**
+ * Returns true for a correct TCP handshake: SYN|SYNACK|ACK, False if not.
+ *
+ * @return boolean true if the session is open, false if not.
+ */
+ public boolean isConnected() {
+ return isConnected;
+ }
+
+ /**
+ * This function returns true if the session is closed properly via FIN ->
FIN ACK, false if not.
Review comment:
```suggestion
* This method returns true if the session is closed properly via FIN ->
FIN ACK, false if not.
```
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> Enable PCAP Plugin to Reassemble TCP Streams
> --------------------------------------------
>
> Key: DRILL-7443
> URL: https://issues.apache.org/jira/browse/DRILL-7443
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Other
> Affects Versions: 1.16.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Fix For: 1.17.0
>
>
> One common task in network forensics is reassembling TCP streams from
> captured network data. This PR adds this capability to Drill.
> h2. Usage
> To enable TCP re-sessionization, in the configuration for the PCAP reader,
> simply set the variable: {{sessionizeTCPStreams}} to {{true}}.
> This can also be accomplished at query time by using the {{table()}} method.
> {{SELECT * FROM table(dfs.test.`attack-trace.pcap` (type => 'pcap',
> sessionizeTCPStreams=> true))}}
> h3. Results
> *When this option is enabled, Drill will ignore all packets that are not TCP
> packets.*
> Executing a query with this option enables changes the results Drill will
> return from PCAP files.
> You will get the following columns:
> * session_start_time: The start time of the session
> * session_end_time: The ending time of the session
> * session_duration: The duration of the session. This will be a Drill PERIOD
> datatype.
> * total_packet_count: The number of packets in the session
> * connection_time: The amount of time it took for the TCP handshake to be
> completed. Useful for network diagnostics
> * src_ip: The IP address of the initiating machine
> * dst_ip: The IP address of the remote machine
> * src_port: The port of the originating machine
> * dst_port: The port of the remote machine
> * src_mac_address: The MAC address of the originating machine
> * dst_mac_address: The MAC address of the remote machine
> * tcp_session: This is the session hash for the TCP session. (Long)
> * is_corrupt: True/false if the session contains corrupted packets
> * data_from_originator: The data sent from the originator
> * data_from_remote: The data sent from the remote machine
> * data_volume_from_remote: The number of bytes sent from the remote host
> * data_volume_from_origin: The number of bytes sent from the originating
> machine
> * packet_count_from_origin: The number of packets sent from the originating
> machine
> * packet_count_from_remote: The number of packets sent from the remote
> machine
>
>
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