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Testing more garbage encryption

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This commit is contained in:
gamer147
2024-09-07 22:14:24 -04:00
parent f7657c2ec4
commit 7e4bce9ac5
32 changed files with 783 additions and 51 deletions
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30
SVSim.EmulatedEntrypoint/Middlewares/SessionidMappingMiddleware.cs Normal file
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@@ -0,0 +1,30 @@
using SVSim.EmulatedEntrypoint.Constants;
using SVSim.EmulatedEntrypoint.Security;
using SVSim.EmulatedEntrypoint.Services;
namespace SVSim.EmulatedEntrypoint.Middlewares;
/// <summary>
/// Maps an incoming request's session id to a udid if both are present.
/// </summary>
public class SessionidMappingMiddleware : IMiddleware
{
private readonly ShadowverseSessionService _shadowverseSessionService;
public SessionidMappingMiddleware(ShadowverseSessionService shadowverseSessionService)
{
_shadowverseSessionService = shadowverseSessionService;
}
public async Task InvokeAsync(HttpContext context, RequestDelegate next)
{
bool hasSessionId = context.Request.Headers.TryGetValue(NetworkConstants.UdidHeaderName, out var udid);
bool hasUdid = context.Request.Headers.TryGetValue(NetworkConstants.SessionIdHeaderName, out var sid);
if (hasSessionId && hasUdid)
{
_shadowverseSessionService.StoreUdidForSessionId(sid.FirstOrDefault(), Guid.Parse(Encryption.Decode(udid.FirstOrDefault())));
}
await next.Invoke(context);
}
}

26
SVSim.EmulatedEntrypoint/Middlewares/ShadowverseTranslationMiddleware.cs
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@@ -4,7 +4,9 @@ using Microsoft.AspNetCore.Mvc.Controllers;
using Microsoft.AspNetCore.Mvc.Infrastructure;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;
using SVSim.EmulatedEntrypoint.Constants;
using SVSim.EmulatedEntrypoint.Security;
using SVSim.EmulatedEntrypoint.Services;
namespace SVSim.EmulatedEntrypoint.Middlewares;
@@ -14,10 +16,12 @@ namespace SVSim.EmulatedEntrypoint.Middlewares;
public class ShadowverseTranslationMiddleware : IMiddleware
{
private readonly IActionDescriptorCollectionProvider _actionDescriptorCollectionProvider;
private readonly ShadowverseSessionService _sessionService;
public ShadowverseTranslationMiddleware(IActionDescriptorCollectionProvider actionDescriptorCollectionProvider)
public ShadowverseTranslationMiddleware(IActionDescriptorCollectionProvider actionDescriptorCollectionProvider, ShadowverseSessionService sessionService)
{
_actionDescriptorCollectionProvider = actionDescriptorCollectionProvider;
_sessionService = sessionService;
}
public async Task InvokeAsync(HttpContext context, RequestDelegate next)
@@ -32,21 +36,33 @@ public class ShadowverseTranslationMiddleware : IMiddleware
await next.Invoke(context);
return;
}
using var requestBytesStream = new MemoryStream();
// Replace response body stream to re-access it.
using var tempResponseBody = new MemoryStream();
var originalResponsebody = context.Response.Body;
context.Response.Body = tempResponseBody;
// Pull out the request bytes into a stream
using var requestBytesStream = new MemoryStream();
await context.Request.Body.CopyToAsync(requestBytesStream);
byte[] requestBytes = requestBytesStream.ToArray();
// Decrypt incoming data. Placeholder.
requestBytes = Encryption.Decrypt(requestBytes, Encryption.Decode(context.Request.Headers["UDID"]));
// Get encryption values for this request
string sid = context.Request.Headers[NetworkConstants.SessionIdHeaderName];
string udid = _sessionService.GetUdidFromSessionId(sid).GetValueOrDefault().ToString();
// Decrypt incoming data.
requestBytes = Encryption.Decrypt(requestBytes, udid);
object? data = MessagePackSerializer.Deserialize(endpointDescriptor.Parameters.FirstOrDefault().ParameterType,
requestBytes);
var json = JsonConvert.SerializeObject(data);
var newStream = new StringContent(json, Encoding.UTF8, "application/json");
context.Request.Body = newStream.ReadAsStream();
context.Request.Headers.ContentType = new StringValues("application/json");
await next.Invoke(context);
// Convert the response into a messagepack, encrypt it
var responseType = ((ControllerActionDescriptor)endpointDescriptor).MethodInfo.ReturnType;
if (responseType.IsGenericType && responseType.GetGenericTypeDefinition() == typeof(Task<>))
{
@@ -58,7 +74,7 @@ public class ShadowverseTranslationMiddleware : IMiddleware
var responseBytes = responseBytesStream.ToArray();
var responseData = JsonConvert.DeserializeObject(Encoding.UTF8.GetString(responseBytes), responseType);
var packedData = MessagePackSerializer.Serialize(responseType, responseData);
packedData = Encryption.Encrypt(packedData, Encryption.Decode(context.Request.Headers["UDID"]));
packedData = Encryption.Encrypt(packedData, udid);
await originalResponsebody.WriteAsync(Encoding.UTF8.GetBytes(Convert.ToBase64String(packedData)));
context.Response.Body = originalResponsebody;
}