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Code Issues Packages Projects Releases 2 Wiki Activity

Properly format and safely escape to CSV in DecodeEventLogger (#1092)

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* Add failing test for toCSV()

* Add missing " to timeslot value

* Add failing test for quotes and commas in details

* Separate comma and quote tests

* Escape toCSV cells using utility

* Use CSVFormatter instead of escape utils

Allows us to control exactly how we want to format a CSV-valid row.

* Never have a null cell

Instead of using a stream map, opting for an explicit handling so the logger can explode when an unexpected null shows up. Prevents the situation where things are mysteriously blank, forcing developers to handle known null scenarios.
This commit is contained in:
Justin Bull
2021-11-15 03:53:52 -05:00
committed by GitHub
parent 0bc11a07cf
commit cb83a8e870
3 changed files with 155 additions and 22 deletions
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54
src/main/java/io/github/dsheirer/module/log/DecodeEventLogger.java
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@@ -33,10 +33,13 @@ import io.github.dsheirer.module.decode.event.IDecodeEvent;
import io.github.dsheirer.module.decode.event.IDecodeEventListener;
import io.github.dsheirer.preference.TimestampFormat;
import io.github.dsheirer.sample.Listener;
import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.QuoteMode;
import java.nio.file.Path;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
@@ -47,6 +50,16 @@ public class DecodeEventLogger extends EventLogger implements IDecodeEventListen
private AliasList mAliasList;
private AliasModel mAliasModel;
/**
* The CSV format that SDR Trunk will use to write decode event logs
* <p>
* It uses the standard, default CSV format (RFC 4180 and permitting empty lines) but *always* quoting cells since
* that's what SDR Trunk has done previously when hand-crafting CSV rows.
*/
private final CSVFormat mCsvFormat = CSVFormat.Builder.create(CSVFormat.DEFAULT)
.setQuoteMode(QuoteMode.ALL)
.build();
public DecodeEventLogger(AliasModel aliasModel, Path logDirectory, String fileNameSuffix, long frequency)
{
super(logDirectory, fileNameSuffix, frequency);
@@ -83,25 +96,23 @@ public class DecodeEventLogger extends EventLogger implements IDecodeEventListen
private String toCSV(IDecodeEvent event)
{
List<Object> cells = new ArrayList<>();
StringBuilder sb = new StringBuilder();
sb.append("\"").append(mTimestampFormat.format(new Date(event.getTimeStart()))).append("\"");
sb.append(",\"").append(event.getDuration() > 0 ? event.getDuration() : "").append("\"");
sb.append(",\"").append(event.getProtocol()).append("\"");
cells.add(mTimestampFormat.format(new Date(event.getTimeStart())));
cells.add(event.getDuration() > 0 ? event.getDuration() : "");
cells.add(event.getProtocol());
String description = event.getEventDescription();
sb.append(",\"").append(description != null ? description : "").append("\"");
cells.add(description != null ? description : "");
List<Identifier> fromIdentifiers = event.getIdentifierCollection().getIdentifiers(Role.FROM);
if(fromIdentifiers != null && !fromIdentifiers.isEmpty())
{
sb.append(",\"").append(fromIdentifiers.get(0)).append("\"");
cells.add(fromIdentifiers.get(0));
}
else
{
sb.append(",\"\"");
cells.add("");
}
List<Identifier> toIdentifiers = event.getIdentifierCollection().getIdentifiers(Role.TO);
@@ -116,48 +127,47 @@ public class DecodeEventLogger extends EventLogger implements IDecodeEventListen
{
String mystring = (!mAliasList.getAliases(toIdentifiers.get(0)).isEmpty()) ?
mAliasList.getAliases(toIdentifiers.get(0)).get(0).toString() : "";
sb.append(",\"").append(mystring).append(" (").append(toIdentifiers.get(0)).append(")\"");
cells.add(mystring + " (" + toIdentifiers.get(0) + ")");
}
else
{
sb.append(",\"\"");
cells.add("");
}
}
else
{
sb.append(",\"\"");
cells.add("");
}
IChannelDescriptor descriptor = event.getChannelDescriptor();
sb.append(",\"").append(descriptor != null ? descriptor : "").append("\"");
cells.add(descriptor != null ? descriptor : "");
Identifier frequency = event.getIdentifierCollection()
.getIdentifier(IdentifierClass.CONFIGURATION, Form.CHANNEL_FREQUENCY, Role.ANY);
if(frequency instanceof FrequencyConfigurationIdentifier)
{
sb.append(",\"").append(mFrequencyFormat
.format(((FrequencyConfigurationIdentifier)frequency).getValue() / 1e6d)).append("\"");
cells.add(mFrequencyFormat
.format(((FrequencyConfigurationIdentifier)frequency).getValue() / 1e6d));
}
else
{
sb.append(",\"\"");
cells.add("");
}
if(event.hasTimeslot())
{
sb.append(",\"TS:").append(event.getTimeslot());
cells.add("TS:" + event.getTimeslot());
}
else
{
sb.append(",\"\"");
cells.add("");
}
String details = event.getDetails();
cells.add(details != null ? details : "");
sb.append(",\"").append(details != null ? details : "").append("\"");
return sb.toString();
return mCsvFormat.format(cells.toArray());
}
}