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Helper to convert packets from pcap json, refactor client stuff

This commit is contained in:
raphaeIl 2024-11-16 05:11:57 -05:00
parent c45444ee8f
commit 23876dfdea
6 changed files with 196 additions and 142 deletions
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10
SCHALE.Common/Crypto/PacketCryptManager.cs
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@ -1,5 +1,6 @@
using System.IO.Compression;
using System.Text;
using SCHALE.Common.Crypto;
using SCHALE.Common.NetworkProtocol;
using Serilog;
@ -12,17 +13,18 @@ namespace MX.Core.Crypto
// private static readonly short PROTOCOL_HEAD_RESERVE = 8;
private readonly XORCryptor _cryptor = new();
private readonly FastCRC _checke = new();
//private ProtocolConverter _converter = new();
private ProtocolConverter _converter = new();
public static PacketCryptManager Instance = new();
public byte[] RequestToBinary(Protocol protocol, string json, int protocolConverter)
public byte[] RequestToBinary(Protocol protocol, string json)
{
byte[] compressedData = Compress(json);
_cryptor.Encrypt(compressedData, 0, compressedData.Length);
_checke.GetCRC(compressedData, 0, compressedData.Length, out uint crc);
Log.Information("CRC: " + crc);
//int protocolConverter = _converter.TypeConversion(crc, protocol);
//int protocolConverter = 1797824024;
Log.Information("protocol: " + protocol);
int protocolConverter = _converter.TypeConversion(crc % 99, protocol);
Log.Information("protocolConverter: " + protocolConverter);
byte[][] data =
[
BitConverter.GetBytes(crc),

31
SCHALE.Common/Crypto/ProtocolConverter.cs Normal file
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@ -0,0 +1,31 @@
using SCHALE.Common.NetworkProtocol;
using Serilog;
using System.Text.Json;
namespace SCHALE.Common.Crypto
{
internal class ProtocolConverter
{
private Dictionary<int, List<int>> ProtocolConversionMappings { get; set; }
public ProtocolConverter()
{
var jsonPath = Path.Combine(Path.GetDirectoryName(AppContext.BaseDirectory), "protocol_converter_values.json");
if (!File.Exists(jsonPath))
{
Log.Information("The Json file for Protocol Converter does not exist...");
return;
}
string protocolJson = File.ReadAllText(jsonPath);
ProtocolConversionMappings = JsonSerializer.Deserialize<Dictionary<int, List<int>>>(protocolJson);
}
public int TypeConversion(uint crc, Protocol protocol)
{
return ProtocolConversionMappings[(int)protocol][(int)crc];
}
}
}

4
SCHALE.GameClient/GameClient.cs
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@ -1,8 +1,12 @@
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.EntityFrameworkCore;
using Newtonsoft.Json;
using SCHALE.Common.NetworkProtocol;
using SCHALE.GameServer.Services;
using Serilog;
using Serilog.Events;
using System.Collections;
using System.Collections.Generic;
namespace SCHALE.GameServer
{

9
SCHALE.GameClient/Models/ErrorViewModel.cs
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@ -1,9 +0,0 @@
namespace SCHALE.GameClient.Models
{
public class ErrorViewModel
{
public string? RequestId { get; set; }
public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
}
}

154
SCHALE.GameClient/Services/PrivateClientService.cs
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@ -6,17 +6,10 @@ using SCHALE.Common.Crypto;
using SCHALE.Common.Crypto.XXHash;
using SCHALE.Common.FlatData;
using SCHALE.Common.NetworkProtocol;
using SCHALE.GameServer.Services.Irc;
using SCHALE.GameServer.Utils;
using Serilog;
using System.IO.Compression;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Reflection.PortableExecutable;
using System.Runtime.InteropServices;
using System.Security.Policy;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
namespace SCHALE.GameServer.Services
{
@ -24,18 +17,13 @@ namespace SCHALE.GameServer.Services
{
private readonly HttpClient _httpClient;
public static readonly string API_URL = "http://10.0.0.149/api/gateway";
public static readonly string PS_URL = "http://10.0.0.149/api/gateway";
public static readonly string MITM_URL = "http://10.0.0.149:8080";
public static readonly string OFFICIAL_API_URL = "http://prod-gateway.bluearchiveyostar.com:5100/api/";
// https://prod-game.bluearchiveyostar.com:5000/api/gateway
//public static readonly string OFFICIAL_API_URL = "https://prod-gateway.bluearchiveyostar.com:5100/api/";
public static readonly string OFFICIAL_API_URL_Test = "ec2-52-68-9-200.ap-northeast-1.compute.amazonaws.com";
// https://prod-game.bluearchiveyostar.com:5000/api/
public static readonly string SessionKey = "";
public static uint[] crc_table = [0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021, 638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013, 1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509, 1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757, 2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653, 3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357, 3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109, 4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269, 881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826, 311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010, 2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778, 1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418, 2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130, 2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922, 3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050, 3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242, 1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195, 1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299, 622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531, 51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555, 4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915, 3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211, 3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763, 2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779, 1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660, 2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964, 295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308, 932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548, 3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204, 3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804, 2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596, 2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188];
public readonly uint POLYNOMIAL = 8;
public readonly uint MASK = 0;
private readonly long AccountServerId = -1;
private readonly string MxToken = "";
private readonly long Hash = 0;
public PrivateClientService(HttpClient httpClient)
{
@ -44,29 +32,11 @@ namespace SCHALE.GameServer.Services
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
//await SendPostRequestAsync(OFFICIAL_API_URL, JsonSerializer.Serialize(new AcademyGetInfoRequest()
//{
// ClientUpTime = 1,
// Resendable = true,
// Hash = ,
// IsTest = false,
// SessionKey = new()
// {
// AccountServerId = ,
// MxToken = ""
// },
//}));
//await SendPostRequestAsync(OFFICIAL_API_URL, new AcademyGetInfoRequest(){ });
await SendPostRequestAsync(OFFICIAL_API_URL, JsonSerializer.Serialize(new ShopBuyGacha3Request()
await SendPostRequestAsync(OFFICIAL_API_URL, new ShopBuyGacha3Request()
{
FreeRecruitId = 0,
SessionKey = new()
{
AccountServerId = ,
MxToken = SessionKey,
},
Cost = new()
{
ParcelInfos = [
@ -106,99 +76,35 @@ namespace SCHALE.GameServer.Services
FurnitureDBs = [],
ConsumeCondition = 0,
},
GoodsId = 35838,
ShopUniqueId = 50667,
ClientUpTime = 0,
Resendable = true,
Hash = ,
IsTest = false,
}));
GoodsId = 35840,
ShopUniqueId = 50668,
});
}
public bool GetCRC(byte[] buffer, int offset, int length, out uint crc)
public async Task SendPostRequestAsync<T>(string url, T requestPacket) where T : RequestPacket
{
if (buffer == null || offset < 0 || length < 0 || offset + length > buffer.Length)
requestPacket.SessionKey = new()
{
crc = 0;
return false;
}
MxToken = this.MxToken,
AccountServerId = this.AccountServerId,
};
crc = MASK;
for (int i = offset; i < offset + length; i++)
{
byte index = (byte)((crc ^ buffer[i]) & 0xFF);
crc = (crc >> 8) ^ crc_table[index];
}
crc ^= MASK;
return true;
}
requestPacket.Hash = this.Hash;
requestPacket.Resendable = true;
requestPacket.ClientUpTime = 0;
requestPacket.IsTest = false;
string packetJsonStr = JsonSerializer.Serialize((T)requestPacket);
public static byte[] CompressToByteArray(byte[] data)
{
if (data == null || data.Length == 0)
return null;
using (var output = new MemoryStream())
{
using (var gzipStream = new GZipStream(output, CompressionMode.Compress))
{
gzipStream.Write(data, 0, data.Length);
}
// Get the compressed data as a byte array
return output.ToArray();
}
}
public static byte[] RequestToBinary(string jsonStr)
{
byte[] jsonPayload = Encoding.UTF8.GetBytes(jsonStr);
byte[] payloadCompressed = CompressToByteArray(jsonPayload);
XOR.Crypt(payloadCompressed, [0xD9]);
return payloadCompressed;
}
public async Task SendPostRequestAsync(string url, string jsonStr)
{
//jsonStr = "";
Log.Information("Sending Post Request to " + url);
Log.Information($"Payload: {jsonStr}");
byte[] payload = PacketCryptManager.Instance.RequestToBinary(Protocol.Shop_BuyGacha3, jsonStr, );
Log.Information($"Payload: {packetJsonStr}");
byte[] payload = PacketCryptManager.Instance.RequestToBinary(requestPacket.Protocol, packetJsonStr);
File.WriteAllBytes("./mx.dat", payload);
Log.Information("Writeen All Bytes");
return;
//GetCRC(payload, 0, payload.Length, out uint crc);
////using var xxhash = XXHash32.Create();
////xxhash.ComputeHash(Encoding.UTF8.GetBytes(name));
//Log.Information("CRC: " + crc);
//SCHALEPacket packet = new SCHALEPacket()
//{
// CRC = crc,
// Protocol = (ushort)Protocol.Academy_GetInfo,
// PacketSize = payload.Length,
// Payload = payload
//};
//using var memoryStream = new MemoryStream();
//using var binaryWriter = new BinaryWriter(memoryStream);
//binaryWriter.Write(packet.CRC);
//binaryWriter.Write(packet.Protocol);
//binaryWriter.Write(packet.PacketSize);
//binaryWriter.Write(payload);
//binaryWriter.BaseStream.Position = 0;
using var fileStream = new FileStream("./mx.dat", FileMode.Create, FileAccess.Write);
using var binaryWriterFile = new BinaryWriter(fileStream);
@ -210,7 +116,7 @@ namespace SCHALE.GameServer.Services
mxFile.Headers.ContentType = MediaTypeHeaderValue.Parse("application/octet-stream");
// Add the in-memory content as a file with a name
var boundary = "BestHTTP_HTTPMultiPartForm_3";
var boundary = "BestHTTP_HTTPMultiPartForm_328B5160";
using var content = new MultipartFormDataContent(boundary);
content.Add(mxFile, "mx", "1");
@ -252,14 +158,4 @@ namespace SCHALE.GameServer.Services
services.AddHostedService<PrivateClientService>();
}
}
public class SCHALEPacket // total 12 bytes header
{
public uint CRC { get; set; } // 4 bytes
public int Protocol { get; set; } //
public int PacketSize { get; set; } //
public byte[] Payload { get; set; }
}
}

130
SCHALE.GameServer/Utils/PcapUtils.cs Normal file
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@ -0,0 +1,130 @@
using Google.FlatBuffers;
using SCHALE.Common.NetworkProtocol;
using System.Text.Json.Nodes;
using System.Text;
using System.Text.Json;
using Newtonsoft.Json;
using Serilog;
using System.Reflection;
namespace SCHALE.GameServer.Utils
{
public static class PcapUtils
{
private static string DefaultPcapFilePath = Path.Combine(Path.GetDirectoryName(AppContext.BaseDirectory), "packets.json");
private static List<RequestPacket> RequestPackets { get; }
private static List<ResponsePacket> ResponsePackets { get; }
static PcapUtils()
{
RequestPackets = new List<RequestPacket>();
ResponsePackets = new List<ResponsePacket>();
PcapUtils.Load();
}
// gets all packets of that type
public static T[] GetPacketsFromPcap<T>(Protocol protocol, PacketType packetType) where T : BasePacket
{
if (packetType == PacketType.Request)
{
return RequestPackets.Where(x => x.Protocol == protocol).Select(x => x as T).ToArray();
}
else
{
return ResponsePackets.Where(x => x.Protocol == protocol).Select(x => x as T).ToArray();
}
}
// get a single packet, remember to change the sessionkey, accountId, etc..
public static T GetPacketFromPcap<T>(Protocol protocol, PacketType packetType) where T : BasePacket
{
return GetPacketsFromPcap<T>((Protocol)protocol, packetType).FirstOrDefault();
}
private static void Load()
{
if (!Path.Exists(DefaultPcapFilePath))
{
Log.Information("Pcap json file was not found.");
return;
}
var json = File.ReadAllText(DefaultPcapFilePath);
var jsonPackets = System.Text.Json.JsonSerializer.Deserialize<JsonArray>(json);
foreach (JsonNode packetNode in jsonPackets)
{
PacketType packetType = packetNode["type"].ToString() == "REQUEST" ? PacketType.Request : PacketType.Response;
JsonNode packetPayload = packetNode["payload"];
Protocol protocol = (Protocol?)packetPayload?["Protocol"]?.GetValue<int?>() ?? Protocol.None;
if (protocol == Protocol.None)
{
Log.Warning("Failed to read protocol from JsonNode, {Payload:j}", packetNode.ToString());
continue;
}
Type packetClassType;
object packet;
try
{
packetClassType = GetPacketTypeByProtocol(protocol, packetType);
packet = packetPayload.Deserialize(packetClassType);
} catch (Exception ex)
{
Log.Warning($"Failed to deserialize {packetNode["type"]} protocol {protocol} from JsonNode, payload: {packetPayload.ToString()}");
continue;
}
if (packetType == PacketType.Request)
{
RequestPackets.Add((RequestPacket)packet);
}
else
{
ResponsePackets.Add((ResponsePacket)packet);
}
Log.Information($"Loaded Pcap Type: {packetNode["type"]}, Protocol: {protocol}");
}
}
public static Type? GetPacketTypeByProtocol(Protocol protocol, PacketType packetType)
{
var assembly = Assembly.GetAssembly(typeof(BasePacket));
Type baseType = packetType == PacketType.Request ? typeof(RequestPacket) : typeof(ResponsePacket);
var packetTypeCandidates = assembly.GetTypes().Where(t => baseType.IsAssignableFrom(t) && !t.IsAbstract);
foreach (var candidate in packetTypeCandidates)
{
var protocolProperty = candidate.GetProperty("Protocol", BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly);
if (protocolProperty != null && protocolProperty.PropertyType == typeof(Protocol))
{
var instance = Activator.CreateInstance(candidate);
if (instance != null)
{
var protocolValue = protocolProperty.GetValue(instance);
if (protocolValue != null && protocolValue.Equals(protocol))
{
return candidate;
}
}
}
}
return null;
}
}
public enum PacketType
{
Request,
Response,
}
}