LoginPacket.java

package javastory.login;

import java.util.List;
import java.util.Map;

import javastory.io.GamePacket;
import javastory.io.PacketBuilder;
import javastory.server.handling.ServerPacketOpcode;
import javastory.tools.HexTool;
import javastory.tools.packets.GameCharacterPacket;

public final class LoginPacket {

	public static GamePacket loginCertificate() {
		final PacketBuilder builder = new PacketBuilder(16);

		builder.writeAsShort(0x12);
		builder
			.writeLengthPrefixedString("30819F300D06092A864886F70D010101050003818D0030818902818100994F4E66B003A7843C944E67BE4375203DAA203C676908E59839C9BADE95F53E848AAFE61DB9C09E80F48675CA2696F4E897B7F18CCB6398D221C4EC5823D11CA1FB9764A78F84711B8B6FCA9F01B171A51EC66C02CDA9308887CEE8E59C4FF0B146BF71F697EB11EDCEBFCE02FB0101A7076A3FEB64F6F6022C8417EB6B87270203010001");

		return builder.getPacket();
	}

	public static GamePacket getLoginFailed(final AuthReplyCode replyCode) {
		final PacketBuilder builder = new PacketBuilder(16);

		/*
		 * 3: ID deleted or blocked 
		 * 4: Incorrect password 
		 * 5: Not a registered id
		 * 6: System error 
		 * 7: Already logged in 
		 * 8: System error 9: System error
		 * 10: Cannot process so many connections 
		 * 11: Only users older than 20 can use this channel 
		 * 13: Unable to log on as master at this ip 
		 * 14: Wrong gateway or personal info and weird korean button 
		 * 15: Processing request with that korean button! 
		 * 16: Please verify your account through email... 
		 * 17: Wrong gateway or personal info 
		 * 21: Please verify your account through email... 
		 * 23: License agreement 
		 * 25: Maple Europe	notice 
		 * 27: Some weird full client notice, probably for trial versions
		 */

		builder.writeAsShort(ServerPacketOpcode.LOGIN_STATUS.getValue());
		builder.writeInt(replyCode.asNumber());
		builder.writeAsShort(0);

		return builder.getPacket();
	}

	public static GamePacket getPermBan(final byte reason) {
		final PacketBuilder builder = new PacketBuilder(16);

		builder.writeAsShort(ServerPacketOpcode.LOGIN_STATUS.getValue());
		builder.writeAsShort(2); // Account is banned
		builder.writeAsByte(0);
		builder.writeByte(reason);
		builder.writeBytes(HexTool.getByteArrayFromHexString("01 01 01 01 00"));

		return builder.getPacket();
	}

	public static GamePacket getTempBan(final long timestampTill, final byte reason) {
		final PacketBuilder builder = new PacketBuilder(17);

		builder.writeAsShort(ServerPacketOpcode.LOGIN_STATUS.getValue());
		builder.writeAsByte(2);
		builder.writeBytes(HexTool.getByteArrayFromHexString("00 00 00 00 00"));
		builder.writeByte(reason);
		builder.writeLong(timestampTill); // Tempban date is handled as a 64-bit
											// long, number of 100NS intervals
											// since 1/1/1601. Lulz.

		return builder.getPacket();
	}

	public static GamePacket getAuthSuccessRequest(final LoginClient client) {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.LOGIN_STATUS.getValue());
		builder.writeAsByte(0);
		builder.writeInt(client.getAccountId());
		builder.writeByte(client.getGender().asNumber());
		builder.writeAsByte(client.isGm() ? 1 : 0); // Admin byte
		builder.writeAsByte(0);
		builder.writeLengthPrefixedString("T13333333337W");
		builder.writeZeroBytes(12);
		/*
		 * 00 00 00 9C 7E 0F 00 00 00 00 0D 00 54 30 36 31 31 30 35 30 34 33 31
		 * 38 4B 03 00 00 00 00 00 00 00 00 00 00 00
		 * ...?~.......T06110504318K............
		 */
		return builder.getPacket();
	}

	public static GamePacket deleteCharResponse(final int cid, final int state) {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.DELETE_CHAR_RESPONSE.getValue());
		builder.writeInt(cid);
		builder.writeAsByte(state);

		return builder.getPacket();
	}

	public static GamePacket characterPasswordError(final byte mode) {
		final PacketBuilder builder = new PacketBuilder(3);

		builder.writeAsShort(ServerPacketOpcode.SECONDPW_ERROR.getValue());
		builder.writeByte(mode);

		return builder.getPacket();
	}

	public static GamePacket getWorldList(final int worldId, final String worldName, final Map<Integer, LoginChannelInfo> channels) {

		final PacketBuilder builder = new PacketBuilder();
		builder.writeAsShort(ServerPacketOpcode.SERVERLIST.getValue());
		builder.writeAsByte(worldId);
		builder.writeLengthPrefixedString(worldName);

		// TODO, this flag is world-specific.
		// 0 = Nothing, 1 = Event, 2 = New, 3 = Hot
		builder.writeAsByte(0);

		// TODO: Load from WorldConfig.
		builder.writeLengthPrefixedString("");
		// 100x of exp and drop rate?
		builder.writeAsShort(100);
		builder.writeAsShort(100);

		final int count = channels.size();
		builder.writeAsByte(count);
		for (final LoginChannelInfo info : channels.values()) {
			builder.writeLengthPrefixedString(info.getName());
			builder.writeInt(info.getLoad());
			builder.writeAsByte(worldId);
			builder.writeAsShort(info.getId());
		}
		builder.writeAsShort(0);

		return builder.getPacket();
	}

	public static GamePacket getEndOfWorldList() {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.SERVERLIST.getValue());
		builder.writeAsByte(0xFF);

		return builder.getPacket();
	}

	public static GamePacket getWorldStatus(final int status) {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.SERVERSTATUS.getValue());
		builder.writeAsShort(status);

		return builder.getPacket();
	}

	public static GamePacket getCharacterList(final boolean secondpw, final List<LoginCharacter> chars, final int maxCharacters) {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.CHARLIST.getValue());
		builder.writeAsByte(0);
		builder.writeAsByte(chars.size());
		for (final LoginCharacter chr : chars) {
			addCharEntry(builder, chr);
		}
		builder.writeAsByte(secondpw ? 1 : 0);
		builder.writeAsByte(0);
		builder.writeAsByte(maxCharacters);
		builder.writeAsByte(0);
		builder.writeAsShort(0);
		builder.writeInt(0);

		return builder.getPacket();
	}

	public static GamePacket addNewCharEntry(final LoginCharacter chr, final boolean worked) {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.ADD_NEW_CHAR_ENTRY.getValue());
		builder.writeAsByte(worked ? 0 : 1);
		addCharEntry(builder, chr);

		return builder.getPacket();
	}

	public static GamePacket charNameResponse(final String charname, final boolean nameUsed) {
		final PacketBuilder builder = new PacketBuilder();

		builder.writeAsShort(ServerPacketOpcode.CHAR_NAME_RESPONSE.getValue());
		builder.writeLengthPrefixedString(charname);
		builder.writeAsByte(nameUsed ? 1 : 0);

		return builder.getPacket();
	}

	private static void addCharEntry(final PacketBuilder builder, final LoginCharacter chr) {
		GameCharacterPacket.addCharStats(builder, chr);
		GameCharacterPacket.addCharLook(builder, chr, true);
		builder.writeAsByte(0);
		builder.writeAsByte(0);
	}
}