[Feature] Allow IP lookup in /seen command.

[Permission] essentials.seen.ipsearch - allows /seen <ip address>

Essentials/src/com/earth2me/essentials/Util.java

@@ -716,4 +716,11 @@ public class Util
 	{
 		return pattern.matcher(input).replaceAll("\u00a7$1");
 	}
+	private static final Pattern IPPATTERN = Pattern.compile(
+			"^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\." +
+			"([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])$");
+	
+	public static boolean validIP(String ipAddress) {
+		return IPPATTERN.matcher(ipAddress).matches();
+	}
 }

Essentials/src/com/earth2me/essentials/commands/Commandseen.java

@@ -2,7 +2,10 @@ package com.earth2me.essentials.commands;
 
 import static com.earth2me.essentials.I18n._;
 import com.earth2me.essentials.User;
+import com.earth2me.essentials.UserMap;
 import com.earth2me.essentials.Util;
+import java.util.ArrayList;
+import java.util.List;
 import org.bukkit.Location;
 import org.bukkit.Server;
 import org.bukkit.command.CommandSender;
@@ -18,16 +21,16 @@ public class Commandseen extends EssentialsCommand
 	@Override
 	protected void run(final Server server, final CommandSender sender, final String commandLabel, final String[] args) throws Exception
 	{
-		seen(server, sender, args, true, true);
+		seen(server, sender, args, true, true, true);
 	}
 
 	@Override
 	protected void run(final Server server, final User user, final String commandLabel, final String[] args) throws Exception
 	{
-		seen(server, user, args, user.isAuthorized("essentials.seen.banreason"), user.isAuthorized("essentials.seen.extra"));
+		seen(server, user, args, user.isAuthorized("essentials.seen.banreason"), user.isAuthorized("essentials.seen.extra"), user.isAuthorized("essentials.seen.ipsearch"));
 	}
 
-	protected void seen(final Server server, final CommandSender sender, final String[] args, final boolean showBan, final boolean extra) throws Exception
+	protected void seen(final Server server, final CommandSender sender, final String[] args, final boolean showBan, final boolean extra, final boolean ipLookup) throws Exception
 	{
 		if (args.length < 1)
 		{
@@ -36,6 +39,30 @@ public class Commandseen extends EssentialsCommand
 		try
 		{
 			User user = getPlayer(server, args, 0);
+			seenOnline(server, sender, user, showBan, extra);
+		}
+		catch (NoSuchFieldException e)
+		{
+			User player = ess.getOfflineUser(args[0]);
+			if (player == null)
+			{
+				if (ipLookup && Util.validIP(args[0]))
+				{
+					seenIP(server, sender, args[0]);
+					return;
+				}
+				else
+				{
+					throw new Exception(_("playerNotFound"));
+				}
+			}
+			seenOffline(server, sender, player, showBan, extra);
+		}
+	}
+
+	private void seenOnline(final Server server, final CommandSender sender, final User user, final boolean showBan, final boolean extra) throws Exception
+	{
+
 		user.setDisplayNick();
 		sender.sendMessage(_("seenOnline", user.getDisplayName(), Util.formatDateDiff(user.getLastLogin())));
 		if (user.isAfk())
@@ -59,19 +86,16 @@ public class Commandseen extends EssentialsCommand
 			sender.sendMessage(_("whoisIPAddress", user.getAddress().getAddress().toString()));
 		}
 	}
-		catch (NoSuchFieldException e)
+
+	private void seenOffline(final Server server, final CommandSender sender, User player, final boolean showBan, final boolean extra) throws Exception
 	{
-			User player = ess.getOfflineUser(args[0]);
-			if (player == null)
-			{
-				throw new Exception(_("playerNotFound"));
-			}
 		player.setDisplayNick();
 		if (player.getLastLogout() > 0)
 		{
 			sender.sendMessage(_("seenOffline", player.getName(), Util.formatDateDiff(player.getLastLogout())));
 		}
-			else {
+		else
+		{
 			sender.sendMessage(_("userUnknown", player.getName()));
 		}
 		if (player.isBanned())
@@ -91,5 +115,46 @@ public class Commandseen extends EssentialsCommand
 			}
 		}
 	}
+
+	private void seenIP(final Server server, final CommandSender sender, final String ipAddress) throws Exception
+	{
+		final UserMap userMap = ess.getUserMap();
+		sender.sendMessage(_("runningPlayerMatch", ipAddress));
+
+		ess.runTaskAsynchronously(new Runnable()
+		{
+			@Override
+			public void run()
+			{
+				final List<String> matches = new ArrayList<String>();
+				for (final String u : userMap.getAllUniqueUsers())
+				{
+					final User user = ess.getUserMap().getUser(u);
+					if (user == null)
+					{
+						continue;
+					}
+
+					final String uIPAddress = user.getLastLoginAddress();
+
+					if (!uIPAddress.isEmpty() && uIPAddress.equalsIgnoreCase(ipAddress))
+					{
+						matches.add(user.getName());
+					}
+				}
+
+				if (matches.size() > 0)
+				{
+					sender.sendMessage(_("matchingIPAddress"));
+					sender.sendMessage(Util.joinList(matches));
+				}
+				else
+				{
+					sender.sendMessage(_("noMatchingPlayers"));
+				}
+
+			}
+		});
+
 	}
 }

Essentials/src/messages.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_cs.properties

@@ -509,3 +509,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_da.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_de.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_en.properties

@@ -507,3 +507,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_es.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_fi.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_fr.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_it.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_nl.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_pl.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Twoje lozko nie jest ustawione, lub jest zablokowane.
 bedSet=\u00a77Spawn w lozku ustawiony!
 kitGiveTo=\u00a74{1} \u00a77otrzymal zestaw\u00a7c {0}\u00a77.
 kitReceive=\u00a77Otrzymales zestaw\u00a7c {0}\u00a77.
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_pt.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)

Essentials/src/messages_se.properties

@@ -506,3 +506,6 @@ bedMissing=\u00a74Your bed is either unset, missing or blocked.
 bedSet=\u00a76Bed spawn set!
 kitGiveTo=\u00a76Giving kit\u00a7c {0}\u00a76 to {1}\u00a7.
 kitReceive=\u00a76Received kit\u00a7c {0}\u00a76. 
+noMatchingPlayers=\u00a76No matching players found.
+matchingIPAddress=\u00a76The following players previously logged in from that IP address:
+runningPlayerMatch=\u00a76Running search for players matching ''\u00a7c{0}\u00a76'' (this could take a little while)