/**
* Proxies any request made to this web server to the clientconfig service. Rewrites the response
* to have any chat servers point to localhost at the specified port.
*/
private async Task ProxyAndRewriteResponse(string configUrl, int chatPort, IHttpContext ctx)
{
var url = configUrl + ctx.Request.RawUrl;
using var message = new HttpRequestMessage(HttpMethod.Get, url);
// Cloudflare bitches at us without a user agent.
message.Headers.TryAddWithoutValidation("User-Agent", ctx.Request.Headers["user-agent"]);
// Add authorization headers for player config.
if (ctx.Request.Headers["x-riot-entitlements-jwt"] != null)
{
message.Headers.TryAddWithoutValidation("X-Riot-Entitlements-JWT",
ctx.Request.Headers["x-riot-entitlements-jwt"]);
}
if (ctx.Request.Headers["authorization"] != null)
{
message.Headers.TryAddWithoutValidation("Authorization", ctx.Request.Headers["authorization"]);
}
var result = await _client.SendAsync(message);
var content = await result.Content.ReadAsStringAsync();
var modifiedContent = content;
Trace.WriteLine("ORIGINAL CLIENTCONFIG: " + content);
try
{
var configObject = (JsonObject)SimpleJson.DeserializeObject(content);
string riotChatHost = null;
var riotChatPort = 0;
// Set fallback host to localhost.
if (configObject.ContainsKey("chat.host"))
{
// Save fallback host
riotChatHost = configObject["chat.host"].ToString();
configObject["chat.host"] = "127.0.0.1";
}
// Set chat port.
if (configObject.ContainsKey("chat.port"))
{
riotChatPort = int.Parse(configObject["chat.port"].ToString());
configObject["chat.port"] = chatPort;
}
// Set chat.affinities (a dictionary) to all localhost.
if (configObject.ContainsKey("chat.affinities"))
{
var affinities = (JsonObject)configObject["chat.affinities"];
if ((bool)configObject["chat.affinity.enabled"])
{
var pasRequest = new HttpRequestMessage(HttpMethod.Get, "https://riot-geo.pas.si.riotgames.com/pas/v1/service/chat");
pasRequest.Headers.TryAddWithoutValidation("Authorization", ctx.Request.Headers["authorization"]);
var pasJwt = await(await _client.SendAsync(pasRequest)).Content.ReadAsStringAsync();
Trace.WriteLine("PAS TOKEN:" + pasJwt);
var affinity = new JsonWebToken(pasJwt).GetPayloadValue <string>("affinity");
// replace fallback host with host by player affinity
riotChatHost = affinities[affinity] as string;
}
foreach (var key in new List <string>(affinities.Keys)) // clone to prevent concurrent modification
{
affinities[key] = "127.0.0.1";
}
}
// Allow an invalid cert.
if (configObject.ContainsKey("chat.allow_bad_cert.enabled"))
{
configObject["chat.allow_bad_cert.enabled"] = true;
}
modifiedContent = SimpleJson.SerializeObject(configObject);
Trace.WriteLine("MODIFIED CLIENTCONFIG: " + modifiedContent);
if (riotChatHost != null && riotChatPort != 0)
{
PatchedChatServer?.Invoke(this, new ChatServerEventArgs {
ChatHost = riotChatHost, ChatPort = riotChatPort
});
}
}
catch (Exception ex)
{
Trace.WriteLine(ex);
// Show a message instead of failing silently.
MessageBox.Show(
"Deceive was unable to rewrite a League of Legends configuration file. This normally happens because Riot changed something on their end. " +
"Please check if there's a new version of Deceive available, or contact the creator through GitHub (https://github.com/molenzwiebel/deceive) or Discord if there's not.\n\n" +
ex,
StartupHandler.DeceiveTitle,
MessageBoxButtons.OK,
MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1
);
Application.Exit();
}
// Using the builtin EmbedIO methods for sending the response adds some garbage in the front of it.
// This seems to do the trick.
var responseBytes = Encoding.UTF8.GetBytes(modifiedContent);
ctx.Response.StatusCode = (int)result.StatusCode;
ctx.Response.SendChunked = false;
ctx.Response.ContentLength64 = responseBytes.Length;
ctx.Response.ContentType = "application/json";
await ctx.Response.OutputStream.WriteAsync(responseBytes, 0, responseBytes.Length);
ctx.Response.OutputStream.Close();
}
/**
* Proxies any request made to this web server to the clientconfig service. Rewrites the response
* to have any chat servers point to localhost at the specified port.
*/
private async Task ProxyAndRewriteResponse(string configUrl, int chatPort, IHttpContext ctx)
{
var url = configUrl + ctx.Request.RawUrl;
using (var message = new HttpRequestMessage(HttpMethod.Get, url))
{
// Cloudflare bitches at us without a user agent.
message.Headers.TryAddWithoutValidation("User-Agent", ctx.Request.Headers["user-agent"]);
// Add authorization headers for player config.
if (ctx.Request.Headers["x-riot-entitlements-jwt"] != null)
{
message.Headers.TryAddWithoutValidation("X-Riot-Entitlements-JWT",
ctx.Request.Headers["x-riot-entitlements-jwt"]);
}
if (ctx.Request.Headers["authorization"] != null)
{
message.Headers.TryAddWithoutValidation("Authorization", ctx.Request.Headers["authorization"]);
}
var result = await _client.SendAsync(message);
var content = await result.Content.ReadAsStringAsync();
var modifiedContent = content;
Debug.WriteLine(content);
try
{
var configObject = JObject.Parse(content);
string riotChatHost = null;
var riotChatPort = 0;
// Set fallback host to localhost.
if (configObject.ContainsKey("chat.host"))
{
// Save fallback host
riotChatHost = configObject["chat.host"].ToString();
configObject["chat.host"] = "127.0.0.1";
}
// Set chat port.
if (configObject.ContainsKey("chat.port"))
{
riotChatPort = int.Parse(configObject["chat.port"].ToString());
configObject["chat.port"] = chatPort;
}
// Set chat.affinities (a dictionary) to all localhost.
if (configObject.ContainsKey("chat.affinities"))
{
var affinities = (JObject)configObject["chat.affinities"];
if ((bool)configObject["chat.affinity.enabled"])
{
var pasRequest = new HttpRequestMessage(HttpMethod.Get, "https://pas.geo.si.riotgames.com/pas/v1/service/chat");
pasRequest.Headers.TryAddWithoutValidation("Authorization", ctx.Request.Headers["authorization"]);
var pasJwt = await(await _client.SendAsync(pasRequest)).Content.ReadAsStringAsync();
Debug.WriteLine(pasJwt);
var affinity = new JsonWebToken(pasJwt).GetPayloadValue <string>("affinity");
// replace fallback host with host by player affinity
riotChatHost = affinities[affinity].ToString();
}
foreach (var key in affinities.Properties()) // clone to prevent concurrent modification
{
affinities[key.Name] = "127.0.0.1";
}
}
// Allow an invalid cert.
if (configObject.ContainsKey("chat.allow_bad_cert.enabled"))
{
configObject["chat.allow_bad_cert.enabled"] = true;
}
modifiedContent = JsonConvert.SerializeObject(configObject);
if (riotChatHost != null && riotChatPort != 0)
{
PatchedChatServer?.Invoke(this, new ChatServerEventArgs {
ChatHost = riotChatHost, ChatPort = riotChatPort
});
}
}
catch (Exception ex)
{
Trace.WriteLine(ex);
Logger.Error(ex.Message);
}
// Using the builtin EmbedIO methods for sending the response adds some garbage in the front of it.
// This seems to do the trick.
var responseBytes = Encoding.UTF8.GetBytes(modifiedContent);
ctx.Response.StatusCode = (int)result.StatusCode;
ctx.Response.SendChunked = false;
ctx.Response.ContentLength64 = responseBytes.Length;
ctx.Response.ContentType = "application/json";
await ctx.Response.OutputStream.WriteAsync(responseBytes, 0, responseBytes.Length);
ctx.Response.OutputStream.Close();
}
}