Improved spam detection.

Now blocking poetry spam and padded message spam.
This commit is contained in:
ryanhamshire 2016-08-08 15:39:08 -07:00
parent ec87939497
commit bed2e11c59
5 changed files with 548 additions and 230 deletions

View File

@ -131,11 +131,11 @@ public class BlockEventHandler implements Listener
//if not empty and wasn't the same as the last sign, log it and remember it for later
PlayerData playerData = this.dataStore.getPlayerData(player.getUniqueId());
if(notEmpty && playerData.lastMessage != null && !playerData.lastMessage.equals(signMessage))
if(notEmpty && playerData.lastSignMessage != null && !playerData.lastSignMessage.equals(signMessage))
{
GriefPrevention.AddLogEntry(player.getName() + lines.toString().replace("\n ", ";"), null);
PlayerEventHandler.makeSocialLogEntry(player.getName(), signMessage);
playerData.lastMessage = signMessage;
playerData.lastSignMessage = signMessage;
if(!player.hasPermission("griefprevention.eavesdropsigns"))
{

View File

@ -86,11 +86,7 @@ public class PlayerData
//spam
private Date lastLogin = null; //when the player last logged into the server
public String lastMessage = ""; //the player's last chat message, or slash command complete with parameters
public Date lastMessageTimestamp = new Date(); //last time the player sent a chat message or used a monitored slash command
public int spamCount = 0; //number of consecutive "spams"
public boolean spamWarned = false; //whether the player recently received a warning
//visualization
public Visualization currentVisualization = null;
@ -135,6 +131,9 @@ public class PlayerData
//this is an anti-bot strategy.
Location noChatLocation = null;
//last sign message, to prevent sign spam
String lastSignMessage = null;
//ignore list
//true means invisible (admin-forced ignore), false means player-created ignore
public ConcurrentHashMap<UUID, Boolean> ignoredPlayers = new ConcurrentHashMap<UUID, Boolean>();

View File

@ -91,6 +91,9 @@ class PlayerEventHandler implements Listener
//matcher for banned words
private WordFinder bannedWordFinder = new WordFinder(GriefPrevention.instance.dataStore.loadBannedWords());
//spam tracker
SpamDetector spamDetector = new SpamDetector();
//typical constructor, yawn
PlayerEventHandler(DataStore dataStore, GriefPrevention plugin)
{
@ -207,14 +210,7 @@ class PlayerEventHandler implements Listener
}
}
//last chat message shown, regardless of who sent it
private String lastChatMessage = "";
private long lastChatMessageTimestamp = 0;
//number of identical messages in a row
private int duplicateMessageCount = 0;
//returns true if the message should be sent, false if it should be muted
//returns true if the message should be muted, true if it should be sent
private boolean handlePlayerChat(Player player, String message, PlayerEvent event)
{
//FEATURE: automatically educate players about claiming land
@ -250,235 +246,84 @@ class PlayerEventHandler implements Listener
//if the player has permission to spam, don't bother even examining the message
if(player.hasPermission("griefprevention.spam")) return false;
boolean spam = false;
String mutedReason = null;
//examine recent messages to detect spam
SpamAnalysisResult result = this.spamDetector.AnalyzeMessage(player.getUniqueId(), message, System.currentTimeMillis());
//prevent bots from chatting - require movement before talking for any newish players
PlayerData playerData = this.dataStore.getPlayerData(player.getUniqueId());
if(playerData.noChatLocation != null)
//apply any needed changes to message (like lowercasing all-caps)
if(event instanceof AsyncPlayerChatEvent)
{
Location currentLocation = player.getLocation();
((AsyncPlayerChatEvent)event).setMessage(result.finalMessage);
}
//don't allow new players to chat after logging in until they move
PlayerData playerData = this.dataStore.getPlayerData(player.getUniqueId());
if(playerData.noChatLocation != null)
{
Location currentLocation = player.getLocation();
if(currentLocation.getBlockX() == playerData.noChatLocation.getBlockX() &&
currentLocation.getBlockZ() == playerData.noChatLocation.getBlockZ())
{
GriefPrevention.sendMessage(player, TextMode.Err, Messages.NoChatUntilMove, 10L);
spam = true;
mutedReason = "pre-movement chat";
result.muteReason = "pre-movement chat";
}
else
{
playerData.noChatLocation = null;
}
}
//remedy any CAPS SPAM, exception for very short messages which could be emoticons like =D or XD
if(message.length() > 4 && this.stringsAreSimilar(message.toUpperCase(), message))
{
//exception for strings containing forward slash to avoid changing a case-sensitive URL
if(event instanceof AsyncPlayerChatEvent)
{
((AsyncPlayerChatEvent)event).setMessage(message.toLowerCase());
}
}
//always mute an exact match to the last chat message
long now = new Date().getTime();
if(mutedReason != null && message.equals(this.lastChatMessage) && now - this.lastChatMessageTimestamp < 750)
{
playerData.spamCount += ++this.duplicateMessageCount;
spam = true;
mutedReason = "repeat message";
}
else
{
this.lastChatMessage = message;
this.lastChatMessageTimestamp = now;
this.duplicateMessageCount = 0;
}
//where other types of spam are concerned, casing isn't significant
message = message.toLowerCase();
//check message content and timing
long millisecondsSinceLastMessage = now - playerData.lastMessageTimestamp.getTime();
//if the message came too close to the last one
if(millisecondsSinceLastMessage < 1500)
{
//increment the spam counter
playerData.spamCount++;
spam = true;
}
//if it's very similar to the last message from the same player and within 10 seconds of that message
if(mutedReason == null && this.stringsAreSimilar(message, playerData.lastMessage) && now - playerData.lastMessageTimestamp.getTime() < 10000)
{
playerData.spamCount++;
spam = true;
mutedReason = "similar message";
}
//filter IP addresses
if(mutedReason == null)
{
if(GriefPrevention.instance.containsBlockedIP(message))
{
//spam notation
playerData.spamCount+=1;
spam = true;
//block message
mutedReason = "IP address";
}
}
//if the message was mostly non-alpha-numerics or doesn't include much whitespace, consider it a spam (probably ansi art or random text gibberish)
if(mutedReason == null && message.length() > 5)
{
int symbolsCount = 0;
int whitespaceCount = 0;
for(int i = 0; i < message.length(); i++)
{
char character = message.charAt(i);
if(!(Character.isLetterOrDigit(character)))
{
symbolsCount++;
}
if(Character.isWhitespace(character))
{
whitespaceCount++;
}
}
if(symbolsCount > message.length() / 2 || (message.length() > 15 && whitespaceCount < message.length() / 10))
{
spam = true;
if(playerData.spamCount > 0) mutedReason = "gibberish";
playerData.spamCount++;
}
}
//very short messages close together are spam
if(mutedReason == null && message.length() < 5 && millisecondsSinceLastMessage < 3000)
{
spam = true;
playerData.spamCount++;
}
//in any case, record the timestamp of this message and also its content for next time
playerData.lastMessageTimestamp = new Date();
playerData.lastMessage = message;
//if the message was determined to be a spam, consider taking action
if(spam)
{
//anything above level 8 for a player which has received a warning... kick or if enabled, ban
if(playerData.spamCount > 8 && playerData.spamWarned)
{
if(GriefPrevention.instance.config_spam_banOffenders)
{
//log entry
GriefPrevention.AddLogEntry("Banning " + player.getName() + " for spam.", CustomLogEntryTypes.AdminActivity);
//kick and ban
PlayerKickBanTask task = new PlayerKickBanTask(player, GriefPrevention.instance.config_spam_banMessage, "GriefPrevention Anti-Spam",true);
GriefPrevention.instance.getServer().getScheduler().scheduleSyncDelayedTask(GriefPrevention.instance, task, 1L);
}
else
{
//log entry
GriefPrevention.AddLogEntry("Kicking " + player.getName() + " for spam.", CustomLogEntryTypes.AdminActivity);
//just kick
PlayerKickBanTask task = new PlayerKickBanTask(player, "", "GriefPrevention Anti-Spam", false);
GriefPrevention.instance.getServer().getScheduler().scheduleSyncDelayedTask(GriefPrevention.instance, task, 1L);
}
return true;
}
//cancel any messages while at or above the third spam level and issue warnings
//anything above level 2, mute and warn
if(playerData.spamCount >= 4)
{
if(mutedReason == null)
{
mutedReason = "too-frequent text";
}
if(!playerData.spamWarned)
{
GriefPrevention.sendMessage(player, TextMode.Warn, GriefPrevention.instance.config_spam_warningMessage, 10L);
GriefPrevention.AddLogEntry("Warned " + player.getName() + " about spam penalties.", CustomLogEntryTypes.Debug, true);
playerData.spamWarned = true;
}
}
if(mutedReason != null)
{
//make a log entry
GriefPrevention.AddLogEntry("Muted " + mutedReason + ".");
GriefPrevention.AddLogEntry("Muted " + player.getName() + " " + mutedReason + ":" + message, CustomLogEntryTypes.Debug, true);
//cancelling the event guarantees other players don't receive the message
return true;
}
}
//otherwise if not a spam, reset the spam counter for this player
else
{
playerData.spamCount = 0;
playerData.spamWarned = false;
}
return false;
//filter IP addresses
if(result.muteReason == null)
{
if(GriefPrevention.instance.containsBlockedIP(message))
{
//block message
result.muteReason = "IP address";
}
}
//take action based on spam detector results
if(result.shouldBanChatter)
{
if(GriefPrevention.instance.config_spam_banOffenders)
{
//log entry
GriefPrevention.AddLogEntry("Banning " + player.getName() + " for spam.", CustomLogEntryTypes.AdminActivity);
//kick and ban
PlayerKickBanTask task = new PlayerKickBanTask(player, GriefPrevention.instance.config_spam_banMessage, "GriefPrevention Anti-Spam",true);
GriefPrevention.instance.getServer().getScheduler().scheduleSyncDelayedTask(GriefPrevention.instance, task, 1L);
}
else
{
//log entry
GriefPrevention.AddLogEntry("Kicking " + player.getName() + " for spam.", CustomLogEntryTypes.AdminActivity);
//just kick
PlayerKickBanTask task = new PlayerKickBanTask(player, "", "GriefPrevention Anti-Spam", false);
GriefPrevention.instance.getServer().getScheduler().scheduleSyncDelayedTask(GriefPrevention.instance, task, 1L);
}
}
else if(result.shouldWarnChatter)
{
//warn and log
GriefPrevention.sendMessage(player, TextMode.Warn, GriefPrevention.instance.config_spam_warningMessage, 10L);
GriefPrevention.AddLogEntry("Warned " + player.getName() + " about spam penalties.", CustomLogEntryTypes.Debug, true);
}
if(result.muteReason != null)
{
//mute and log
GriefPrevention.AddLogEntry("Muted " + result.muteReason + ".");
GriefPrevention.AddLogEntry("Muted " + player.getName() + " " + result.muteReason + ":" + message, CustomLogEntryTypes.Debug, true);
return true;
}
return false;
}
//if two strings are 75% identical, they're too close to follow each other in the chat
private boolean stringsAreSimilar(String message, String lastMessage)
{
//determine which is shorter
String shorterString, longerString;
if(lastMessage.length() < message.length())
{
shorterString = lastMessage;
longerString = message;
}
else
{
shorterString = message;
longerString = lastMessage;
}
if(shorterString.length() <= 5) return shorterString.equals(longerString);
//set similarity tolerance
int maxIdenticalCharacters = longerString.length() - longerString.length() / 4;
//trivial check on length
if(shorterString.length() < maxIdenticalCharacters) return false;
//compare forward
int identicalCount = 0;
int i;
for(i = 0; i < shorterString.length(); i++)
{
if(shorterString.charAt(i) == longerString.charAt(i)) identicalCount++;
if(identicalCount > maxIdenticalCharacters) return true;
}
//compare backward
int j;
for(j = 0; j < shorterString.length() - i; j++)
{
if(shorterString.charAt(shorterString.length() - j - 1) == longerString.charAt(longerString.length() - j - 1)) identicalCount++;
if(identicalCount > maxIdenticalCharacters) return true;
}
return false;
}
//when a player uses a slash command...
@EventHandler(ignoreCancelled = true, priority = EventPriority.LOWEST)
synchronized void onPlayerCommandPreprocess (PlayerCommandPreprocessEvent event)

View File

@ -0,0 +1,269 @@
package me.ryanhamshire.GriefPrevention;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
class SpamDetector
{
//last chat message shown and its timestamp, regardless of who sent it
private String lastChatMessage = "";
private long lastChatMessageTimestamp = 0;
//number of identical chat messages in a row
private int duplicateMessageCount = 0;
//data for individual chatters
ConcurrentHashMap<UUID, ChatterData> dataStore = new ConcurrentHashMap<UUID, ChatterData>();
private ChatterData getChatterData(UUID chatterID)
{
ChatterData data = this.dataStore.get(chatterID);
if(data == null)
{
data = new ChatterData();
this.dataStore.put(chatterID, data);
}
return data;
}
SpamAnalysisResult AnalyzeMessage(UUID chatterID, String message, long timestamp)
{
SpamAnalysisResult result = new SpamAnalysisResult();
result.finalMessage = message;
//remedy any CAPS SPAM, exception for very short messages which could be emoticons like =D or XD
if(message.length() > 4 && this.stringsAreSimilar(message.toUpperCase(), message))
{
message = message.toLowerCase();
result.finalMessage = message;
}
boolean spam = false;
ChatterData chatterData = this.getChatterData(chatterID);
//mute if total volume of text from this player is too high
if(message.length() > 50 && chatterData.getTotalRecentLength(timestamp) > 200)
{
spam = true;
result.muteReason = "too much chat sent in 10 seconds";
chatterData.spamLevel++;
}
//always mute an exact match to the last chat message
if(result.finalMessage.equals(this.lastChatMessage) && timestamp - this.lastChatMessageTimestamp < 2000)
{
chatterData.spamLevel += ++this.duplicateMessageCount;
spam = true;
result.muteReason = "repeat message";
}
else
{
this.lastChatMessage = message;
this.lastChatMessageTimestamp = timestamp;
this.duplicateMessageCount = 0;
}
//check message content and timing
long millisecondsSinceLastMessage = timestamp - chatterData.lastMessageTimestamp;
//if the message came too close to the last one
if(millisecondsSinceLastMessage < 1500)
{
//increment the spam counter
chatterData.spamLevel++;
spam = true;
}
//if it's exactly the same as the last message from the same player and within 30 seconds
if(result.muteReason == null && millisecondsSinceLastMessage < 30000 && result.finalMessage.equalsIgnoreCase(chatterData.lastMessage))
{
chatterData.spamLevel++;
spam = true;
result.muteReason = "repeat message";
}
//if it's very similar to the last message from the same player and within 10 seconds of that message
if(result.muteReason == null && millisecondsSinceLastMessage < 10000 && this.stringsAreSimilar(message.toLowerCase(), chatterData.lastMessage.toLowerCase()))
{
chatterData.spamLevel++;
spam = true;
if(chatterData.spamLevel > 2)
{
result.muteReason = "similar message";
}
}
//if the message was mostly non-alpha-numerics or doesn't include much whitespace, consider it a spam (probably ansi art or random text gibberish)
if(result.muteReason == null && message.length() > 5)
{
int symbolsCount = 0;
int whitespaceCount = 0;
for(int i = 0; i < message.length(); i++)
{
char character = message.charAt(i);
if(!(Character.isLetterOrDigit(character)))
{
symbolsCount++;
}
if(Character.isWhitespace(character))
{
whitespaceCount++;
}
}
if(symbolsCount > message.length() / 2 || (message.length() > 15 && whitespaceCount < message.length() / 10))
{
spam = true;
if(chatterData.spamLevel > 0) result.muteReason = "gibberish";
chatterData.spamLevel++;
}
}
//very short messages close together are spam
if(result.muteReason == null && message.length() < 5 && millisecondsSinceLastMessage < 3000)
{
spam = true;
chatterData.spamLevel++;
}
//if the message was determined to be a spam, consider taking action
if(spam)
{
//anything above level 8 for a player which has received a warning... kick or if enabled, ban
if(chatterData.spamLevel > 8 && chatterData.spamWarned)
{
result.shouldBanChatter = true;
}
else if(chatterData.spamLevel >= 4)
{
if(!chatterData.spamWarned)
{
chatterData.spamWarned = true;
result.shouldWarnChatter = true;
}
if(result.muteReason == null)
{
result.muteReason = "too-frequent text";
}
}
}
//otherwise if not a spam, reduce the spam level for this player
else
{
chatterData.spamLevel = 0;
chatterData.spamWarned = false;
}
chatterData.AddMessage(message, timestamp);
return result;
}
//if two strings are 75% identical, they're too close to follow each other in the chat
private boolean stringsAreSimilar(String message, String lastMessage)
{
//ignore differences in only punctuation and whitespace
message = message.replaceAll("[^\\p{Alpha}]", "");
lastMessage = lastMessage.replaceAll("[^\\p{Alpha}]", "");
//determine which is shorter
String shorterString, longerString;
if(lastMessage.length() < message.length())
{
shorterString = lastMessage;
longerString = message;
}
else
{
shorterString = message;
longerString = lastMessage;
}
if(shorterString.length() <= 5) return shorterString.equals(longerString);
//set similarity tolerance
int maxIdenticalCharacters = longerString.length() - longerString.length() / 4;
//trivial check on length
if(shorterString.length() < maxIdenticalCharacters) return false;
//compare forward
int identicalCount = 0;
int i;
for(i = 0; i < shorterString.length(); i++)
{
if(shorterString.charAt(i) == longerString.charAt(i)) identicalCount++;
if(identicalCount > maxIdenticalCharacters) return true;
}
//compare backward
int j;
for(j = 0; j < shorterString.length() - i; j++)
{
if(shorterString.charAt(shorterString.length() - j - 1) == longerString.charAt(longerString.length() - j - 1)) identicalCount++;
if(identicalCount > maxIdenticalCharacters) return true;
}
return false;
}
}
class SpamAnalysisResult
{
String finalMessage;
boolean shouldWarnChatter = false;
boolean shouldBanChatter = false;
String muteReason;
}
class ChatterData
{
public String lastMessage = ""; //the player's last chat message, or slash command complete with parameters
public long lastMessageTimestamp; //last time the player sent a chat message or used a monitored slash command
public int spamLevel = 0; //number of consecutive "spams"
public boolean spamWarned = false; //whether the player has received a warning recently
//all recent message lengths and their total
private ConcurrentLinkedQueue<LengthTimestampPair> recentMessageLengths = new ConcurrentLinkedQueue<LengthTimestampPair>();
private int recentTotalLength = 0;
public void AddMessage(String message, long timestamp)
{
int length = message.length();
this.recentMessageLengths.add(new LengthTimestampPair(length, timestamp));
this.recentTotalLength += length;
this.lastMessage = message;
this.lastMessageTimestamp = timestamp;
}
public int getTotalRecentLength(long timestamp)
{
LengthTimestampPair oldestPair = this.recentMessageLengths.peek();
while(oldestPair != null && timestamp - oldestPair.timestamp > 10000)
{
this.recentMessageLengths.poll();
this.recentTotalLength -= oldestPair.length;
oldestPair = this.recentMessageLengths.peek();
}
return this.recentTotalLength;
}
}
class LengthTimestampPair
{
public long timestamp;
public int length;
public LengthTimestampPair(int length, long timestamp)
{
this.length = length;
this.timestamp = timestamp;
}
}

View File

@ -4,6 +4,7 @@ import static org.junit.Assert.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.UUID;
import org.junit.Test;
@ -81,4 +82,208 @@ public class Tests
assertFalse(finder.hasMatch("!asas dfasdf"));
assertFalse(finder.hasMatch("?asdfa sdfas df"));
}
private UUID player1 = UUID.fromString("f13c5a98-3777-4659-a111-5617adb7d7fb");
private UUID player2 = UUID.fromString("8667ba71-b85a-4004-af54-457a9734eed7");
@Test
public void SpamDetector_BasicChatOK()
{
SpamDetector detector = new SpamDetector();
String message = "Hi, everybody! :)";
SpamAnalysisResult result = detector.AnalyzeMessage(player1, message, 1000);
assertTrue(result.muteReason == null);
assertFalse(result.shouldWarnChatter);
assertFalse(result.shouldBanChatter);
assertTrue(result.finalMessage.equals(message));
}
@Test
public void SpamDetector_CoordinatesOK()
{
SpamDetector detector = new SpamDetector();
assertTrue(detector.AnalyzeMessage(player1, "1029,2945", 0).muteReason == null);
assertTrue(detector.AnalyzeMessage(player1, "x1029 z2945", 100000).muteReason == null);
assertTrue(detector.AnalyzeMessage(player1, "x=1029; y=60; z=2945", 200000).muteReason == null);
}
@Test
public void SpamDetector_NumbersOK()
{
SpamDetector detector = new SpamDetector();
assertTrue(detector.AnalyzeMessage(player1, "25", 0).muteReason == null);
assertTrue(detector.AnalyzeMessage(player1, "12,234.89", 100000).muteReason == null);
assertTrue(detector.AnalyzeMessage(player1, "20078", 200000).muteReason == null);
}
@Test
public void SpamDetector_RepetitionExact()
{
SpamDetector detector = new SpamDetector();
String message = "Hi, everybody! :)";
assertFalse(detector.AnalyzeMessage(player1, message, 1000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, message, 28000).muteReason != null);
}
@Test
public void SpamDetector_RepetitionExactOK()
{
SpamDetector detector = new SpamDetector();
String message = "Hi, everybody! :)";
assertFalse(detector.AnalyzeMessage(player1, message, 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, message, 35000).muteReason != null);
}
@Test
public void SpamDetector_Padding()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "Hacking is really fun guys!! :) 123123123456.12398127498762935", 1000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Hacking is really fun guys!! :) 112321523456.1239345498762935", 1000).muteReason != null);
}
@Test
public void SpamDetector_Repetition()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 5000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 9000).muteReason != null);
}
@Test
public void SpamDetector_TeamRepetition()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 1000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player2, "Hi, everybody! :)", 2500).muteReason != null);
}
@Test
public void SpamDetector_TeamRepetitionOK()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "hi", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player2, "hi", 3000).muteReason != null);
}
@Test
public void SpamDetector_Gibberish()
{
SpamDetector detector = new SpamDetector();
assertTrue(detector.AnalyzeMessage(player1, "poiufpoiuasdfpoiuasdfuaufpoiasfopiuasdfpoiuasdufsdf", 1000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player2, "&^%(& (&^%(% (*%#@^ #$&(_||", 3000).muteReason != null);
}
@Test
public void SpamDetector_RepetitionOK()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 12000).muteReason != null);
}
@Test
public void SpamDetector_TooFast()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "How's it going? :)", 2000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Oh how I've missed you all! :)", 3000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Why is nobody responding to me??!", 4000).muteReason != null);
}
@Test
public void SpamDetector_TooMuchVolume()
{
SpamDetector detector = new SpamDetector();
assertFalse(detector.AnalyzeMessage(player1, "Once upon a time there was this guy who wanted to be a hacker. So he started logging into Minecraft servers and threatening to DDOS them.", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Everybody knew that he couldn't be a real hacker, because no real hacker would consider hacking Minecraft to be worth their time, but he didn't understand that even after it was explained to him.", 3000).muteReason != null);
//start of mute
assertTrue(detector.AnalyzeMessage(player1, "After I put him in jail and he wasted half an hour of his time trying to solve the (unsolvable) jail 'puzzle', he offered his services to me in exchange for being let out of jail.", 10000).muteReason != null);
//forgiven after taking a break
assertFalse(detector.AnalyzeMessage(player1, "He promised to DDOS any of my 'rival servers'. So I offered him an opportunity to prove he could do what he said, and I gave him his own IP address from our server logs. Then he disappeared for a while.", 16000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "When he finally came back, I /SoftMuted him and left him in the jail.", 28000).muteReason != null);
}
@Test
public void SpamDetector_Caps()
{
SpamDetector detector = new SpamDetector();
String message = "OMG I LUFF U KRISTINAAAAAA!";
SpamAnalysisResult result = detector.AnalyzeMessage(player1, message, 1000);
assertTrue(result.finalMessage.equals(message.toLowerCase()));
assertTrue(result.muteReason == null);
}
@Test
public void SpamDetector_CapsOK()
{
SpamDetector detector = new SpamDetector();
String message = "=D";
SpamAnalysisResult result = detector.AnalyzeMessage(player1, message, 1000);
assertTrue(result.finalMessage.equals(message));
assertTrue(result.muteReason == null);
}
@Test
public void SpamDetector_WarnAndBan()
{
SpamDetector detector = new SpamDetector();
//allowable noise
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "How's it going? :)", 2000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Oh how I've missed you all! :)", 3000).muteReason != null);
//begin mute and warning
SpamAnalysisResult result = detector.AnalyzeMessage(player1, "Why is nobody responding to me??!", 4000);
assertTrue(result.muteReason != null);
assertTrue(result.shouldWarnChatter);
assertFalse(result.shouldBanChatter);
assertTrue(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 5000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Oh how I've missed you all! :)", 6000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 7000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "How's it going? :)", 8000).muteReason != null);
//ban
result = detector.AnalyzeMessage(player1, "Why is nobody responding to me??!", 9000);
assertTrue(result.shouldBanChatter);
}
@Test
public void SpamDetector_Forgiveness()
{
SpamDetector detector = new SpamDetector();
//allowable noise
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 1000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "How's it going? :)", 2000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Oh how I've missed you all! :)", 3000).muteReason != null);
//start of mutes, and a warning
SpamAnalysisResult result = detector.AnalyzeMessage(player1, "Why is nobody responding to me??!", 4000);
assertTrue(result.muteReason != null);
assertTrue(result.shouldWarnChatter);
assertFalse(result.shouldBanChatter);
assertTrue(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 5000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Oh how I've missed you all! :)", 6000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 7000).muteReason != null);
assertTrue(detector.AnalyzeMessage(player1, "How's it going? :)", 8000).muteReason != null);
//long delay before next message, not muted anymore
result = detector.AnalyzeMessage(player1, "Why is nobody responding to me??!", 20000);
assertFalse(result.shouldBanChatter);
assertFalse(detector.AnalyzeMessage(player1, "Hi, everybody! :)", 21000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "How's it going? :)", 22000).muteReason != null);
assertFalse(detector.AnalyzeMessage(player1, "Oh how I've missed you all! :)", 23000).muteReason != null);
//mutes start again, and warning appears again
result = detector.AnalyzeMessage(player1, "Why is nobody responding to me??!", 24000);
assertTrue(result.muteReason != null);
assertTrue(result.shouldWarnChatter);
assertFalse(result.shouldBanChatter);
}
}