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Basic support for 1.19.2

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This commit is contained in:
BruceChen 2022-08-27 02:10:44 +08:00
parent af1485c753
commit c34dd46067
14 changed files with 703 additions and 129 deletions
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96
MinecraftClient/Protocol/PlayerInfo.cs
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@ -4,12 +4,13 @@ using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MinecraftClient.Protocol.Keys;
using MinecraftClient.Protocol.Message;
namespace MinecraftClient.Protocol
{
public class PlayerInfo
{
public readonly Guid UUID;
public readonly Guid Uuid;
public readonly string Name;
@ -26,9 +27,13 @@ namespace MinecraftClient.Protocol
private readonly DateTime? KeyExpiresAt;
private bool lastMessageVerified;
private byte[]? precedingSignature;
public PlayerInfo(Guid uuid, string name, Tuple<string, string, string>[]? property, int gamemode, int ping, string? displayName, long? timeStamp, byte[]? publicKey, byte[]? signature)
{
UUID = uuid;
Uuid = uuid;
Name = name;
if (property != null)
Property = property;
@ -48,36 +53,107 @@ namespace MinecraftClient.Protocol
PublicKey = null;
}
}
lastMessageVerified = true;
precedingSignature = null;
}
public PlayerInfo(string name, Guid uuid)
{
Name = name;
UUID = uuid;
Uuid = uuid;
Gamemode = -1;
Ping = 0;
lastMessageVerified = true;
precedingSignature = null;
}
public bool IsKeyVaild()
public bool IsMessageChainLegal()
{
return PublicKey != null && DateTime.Now.ToUniversalTime() > this.KeyExpiresAt;
return this.lastMessageVerified;
}
public bool VerifyMessage(string message, Guid uuid, long timestamp, long salt, ref byte[] signature)
public bool IsKeyExpired()
{
if (PublicKey == null)
return DateTime.Now.ToUniversalTime() > this.KeyExpiresAt;
}
/// <summary>
/// Verify message - 1.19
/// </summary>
/// <param name="message">Message content</param>
/// <param name="timestamp">Timestamp</param>
/// <param name="salt">Salt</param>
/// <param name="signature">Message signature</param>
/// <returns>Is this message vaild</returns>
public bool VerifyMessage(string message, long timestamp, long salt, ref byte[] signature)
{
if (PublicKey == null || IsKeyExpired())
return false;
else
{
string uuidString = uuid.ToString().Replace("-", string.Empty);
DateTimeOffset timeOffset = DateTimeOffset.FromUnixTimeMilliseconds(timestamp);
byte[] saltByte = BitConverter.GetBytes(salt);
Array.Reverse(saltByte);
return PublicKey.VerifyMessage(message, uuidString, timeOffset, ref saltByte, ref signature);
return PublicKey.VerifyMessage(message, Uuid, timeOffset, ref saltByte, ref signature);
}
}
/// <summary>
/// Verify message - 1.19.1 and above
/// </summary>
/// <param name="message">Message content</param>
/// <param name="timestamp">Timestamp</param>
/// <param name="salt">Salt</param>
/// <param name="signature">Message signature</param>
/// <param name="precedingSignature">Preceding message signature</param>
/// <param name="lastSeenMessages">LastSeenMessages</param>
/// <returns>Is this message chain vaild</returns>
public bool VerifyMessage(string message, long timestamp, long salt, ref byte[] signature, ref byte[]? precedingSignature, LastSeenMessageList lastSeenMessages)
{
if (this.lastMessageVerified == false)
return false;
if (PublicKey == null || IsKeyExpired() || (this.precedingSignature != null && precedingSignature == null))
return false;
if (this.precedingSignature != null && !this.precedingSignature.SequenceEqual(precedingSignature!))
return false;
DateTimeOffset timeOffset = DateTimeOffset.FromUnixTimeMilliseconds(timestamp);
byte[] saltByte = BitConverter.GetBytes(salt);
Array.Reverse(saltByte);
bool res = PublicKey.VerifyMessage(message, Uuid, timeOffset, ref saltByte, ref signature, ref precedingSignature, lastSeenMessages);
this.lastMessageVerified = res;
this.precedingSignature = signature;
return res;
}
/// <summary>
/// Verify message head - 1.19.1 and above
/// </summary>
/// <param name="precedingSignature">Preceding message signature</param>
/// <param name="headerSignature">Message signature</param>
/// <param name="bodyDigest">Message body hash</param>
/// <returns>Is this message chain vaild</returns>
public bool VerifyMessageHead(ref byte[]? precedingSignature, ref byte[] headerSignature, ref byte[] bodyDigest)
{
if (this.lastMessageVerified == false)
return false;
if (PublicKey == null || IsKeyExpired() || (this.precedingSignature != null && precedingSignature == null))
return false;
if (this.precedingSignature != null && !this.precedingSignature.SequenceEqual(precedingSignature!))
return false;
bool res = PublicKey.VerifyHeader(ref bodyDigest, ref headerSignature);
this.lastMessageVerified = res;
this.precedingSignature = headerSignature;
return res;
}
}
}