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From kylerichardson <...@git.apache.org>
Subject [GitHub] incubator-metron pull request #276: METRON-363 Fix Cisco ASA Parser
Date Sat, 01 Oct 2016 17:35:15 GMT
Github user kylerichardson commented on a diff in the pull request:

    https://github.com/apache/incubator-metron/pull/276#discussion_r81454659
  
    --- Diff: metron-platform/metron-parsers/src/main/java/org/apache/metron/parsers/asa/BasicAsaParser.java
---
    @@ -0,0 +1,165 @@
    +/**
    + * 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.metron.parsers.asa;
    +
    +import com.google.common.collect.ImmutableMap;
    +import oi.thekraken.grok.api.Grok;
    +import oi.thekraken.grok.api.Match;
    +import oi.thekraken.grok.api.exception.GrokException;
    +import org.apache.commons.validator.routines.InetAddressValidator;
    +import org.apache.metron.common.Constants;
    +import org.apache.metron.parsers.BasicParser;
    +import org.apache.metron.parsers.utils.FieldValidators;
    +import org.apache.metron.parsers.utils.SyslogUtils;
    +import org.json.simple.JSONObject;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +import java.io.*;
    +import java.util.*;
    +
    +public class BasicAsaParser extends BasicParser {
    +
    +    protected static final Logger LOG = LoggerFactory.getLogger(BasicAsaParser.class);
    +
    +    private Grok asaGrok;
    +
    +    private static final InetAddressValidator ipValidator = InetAddressValidator.getInstance();
    +
    +    private static final Map<String, String> patternMap = ImmutableMap.<String,
String>builder()
    +            .put("ASA-2-106001", "CISCOFW106001")
    +		    .put("ASA-2-106006", "CISCOFW106006_106007_106010")
    +		    .put("ASA-2-106007", "CISCOFW106006_106007_106010")
    +		    .put("ASA-2-106010", "CISCOFW106006_106007_106010")
    +		    .put("ASA-3-106014", "CISCOFW106014")
    +		    .put("ASA-6-106015", "CISCOFW106015")
    +		    .put("ASA-1-106021", "CISCOFW106021")
    +		    .put("ASA-4-106023", "CISCOFW106023")
    +		    .put("ASA-5-106100", "CISCOFW106100")
    +		    .put("ASA-6-110002", "CISCOFW110002")
    +		    .put("ASA-6-302010", "CISCOFW302010")
    +		    .put("ASA-6-302013", "CISCOFW302013_302014_302015_302016")
    +		    .put("ASA-6-302014", "CISCOFW302013_302014_302015_302016")
    +		    .put("ASA-6-302015", "CISCOFW302013_302014_302015_302016")
    +		    .put("ASA-6-302016", "CISCOFW302013_302014_302015_302016")
    +		    .put("ASA-6-302020", "CISCOFW302020_302021")
    +		    .put("ASA-6-302021", "CISCOFW302020_302021")
    +		    .put("ASA-6-305011", "CISCOFW305011")
    +		    .put("ASA-3-313001", "CISCOFW313001_313004_313008")
    +		    .put("ASA-3-313004", "CISCOFW313001_313004_313008")
    +		    .put("ASA-3-313008", "CISCOFW313001_313004_313008")
    +		    .put("ASA-4-313005", "CISCOFW313005")
    +		    .put("ASA-4-402117", "CISCOFW402117")
    +		    .put("ASA-4-402119", "CISCOFW402119")
    +		    .put("ASA-4-419001", "CISCOFW419001")
    +		    .put("ASA-4-419002", "CISCOFW419002")
    +		    .put("ASA-4-500004", "CISCOFW500004")
    +		    .put("ASA-6-602303", "CISCOFW602303_602304")
    +		    .put("ASA-6-602304", "CISCOFW602303_602304")
    +		    .put("ASA-7-710001", "CISCOFW710001_710002_710003_710005_710006")
    +		    .put("ASA-7-710002", "CISCOFW710001_710002_710003_710005_710006")
    +		    .put("ASA-7-710003", "CISCOFW710001_710002_710003_710005_710006")
    +		    .put("ASA-7-710005", "CISCOFW710001_710002_710003_710005_710006")
    +		    .put("ASA-7-710006", "CISCOFW710001_710002_710003_710005_710006")
    +		    .put("ASA-6-713172", "CISCOFW713172")
    +		    .put("ASA-4-733100", "CISCOFW733100")
    +		    .put("ASA-6-305012", "CISCOFW305012")
    +		    .put("ASA-7-609001", "CISCOFW609001")
    +		    .put("ASA-7-609002", "CISCOFW609002")
    +            .put("ASA-5-713041", "CISCOFW713041")
    +            .build();
    +
    +    @Override
    +    public void configure(Map<String, Object> config) {
    +
    +    }
    +
    +    @Override
    +    public void init() {
    +        asaGrok = new Grok();
    +        InputStream patternStream = this.getClass().getClassLoader().getResourceAsStream("patterns/asa");
    +        try {
    +            asaGrok.addPatternFromReader(new InputStreamReader(patternStream));
    +        } catch (GrokException e) {
    +            e.printStackTrace();
    +        }
    +        LOG.info("[Metron] CISCO ASA Parser Initialized");
    +    }
    +
    +    @Override
    +    public List<JSONObject> parse(byte[] rawMessage) {
    +        String syslogPattern = "%{CISCO_TAGGED_SYSLOG}";
    +        JSONObject metronJson = new JSONObject();
    +        List<JSONObject> messages = new ArrayList<>();
    +        try {
    +            String logLine = new String(rawMessage, "UTF-8");
    +            LOG.trace("[Metron] Started parsing raw message: " + logLine);
    --- End diff --
    
    I'd like to leave the additional logging in for assistance in debugging when adding new
ASA message types to the parser in the future. I've updated the code to use the SLF4J parameterized
messages as suggested.


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