Implement Atlas sigreq1 connectionless packet

Consists of a JSON object including a type key and a HMAC-SHA256
signature using the gameserver-specific token from the masterserver
as the key.

2 files changed, 26 insertions, 0 deletions

diff --git a/NorthstarDLL/masterserver/masterserver.cpp b/NorthstarDLL/masterserver/masterserver.cpp
index 8087237c..9b439027 100644
--- a/NorthstarDLL/masterserver/masterserver.cpp
+++ b/NorthstarDLL/masterserver/masterserver.cpp
@@ -763,6 +763,31 @@ void MasterServerManager::WritePlayerPersistentData(const char* playerId, const
 	requestThread.detach();
 }
 
+void MasterServerManager::ProcessConnectionlessPacketSigreq1(std::string data)
+{
+	rapidjson_document obj;
+	obj.Parse(data);
+
+	if (obj.HasParseError())
+	{
+		// note: it's okay to print the data as-is since we've already checked that it actually came from Atlas
+		spdlog::error("invalid Atlas connectionless packet request ({}): {}", data, GetParseError_En(obj.GetParseError()));
+		return;
+	}
+
+	if (!obj.HasMember("type") || !obj["type"].IsString())
+	{
+		spdlog::error("invalid Atlas connectionless packet request ({}): missing type", data);
+		return;
+	}
+
+	std::string type = obj["type"].GetString();
+
+	// TODO
+
+	spdlog::error("invalid Atlas connectionless packet request: unknown type {}", type);
+}
+
 void ConCommand_ns_fetchservers(const CCommand& args)
 {
 	g_pMasterServerManager->RequestServerList();
diff --git a/NorthstarDLL/masterserver/masterserver.h b/NorthstarDLL/masterserver/masterserver.h
index 21082e2f..5cd6a695 100644
--- a/NorthstarDLL/masterserver/masterserver.h
+++ b/NorthstarDLL/masterserver/masterserver.h
@@ -126,6 +126,7 @@ class MasterServerManager
 	void AuthenticateWithOwnServer(const char* uid, const char* playerToken);
 	void AuthenticateWithServer(const char* uid, const char* playerToken, RemoteServerInfo server, const char* password);
 	void WritePlayerPersistentData(const char* playerId, const char* pdata, size_t pdataSize);
+	void ProcessConnectionlessPacketSigreq1(std::string req);
 };
 
 extern MasterServerManager* g_pMasterServerManager;