From d81e2f8f0fdc817146d68cc86c38fa6cdf8aae7e Mon Sep 17 00:00:00 2001
From: wolf109909 <84360921+wolf109909@users.noreply.github.com>
Date: Sun, 8 Sep 2024 12:29:49 +0800
Subject: [PATCH] add basic xgun compat check

---
 primedev/Northstar.cmake        |  1 +
 primedev/client/xgun_compat.cpp | 24 ++++++++++++++++++++++++
 primedev/ns_version.h           |  2 +-
 3 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 primedev/client/xgun_compat.cpp

diff --git a/primedev/Northstar.cmake b/primedev/Northstar.cmake
index e42009e8d..e3bb8ee81 100644
--- a/primedev/Northstar.cmake
+++ b/primedev/Northstar.cmake
@@ -25,6 +25,7 @@ add_library(
     "core/anticheat.cpp"
     "core/anticheat.h"
     
+    "client/xgun_compat.cpp"
     "client/igig/igig.cpp"
     "client/igig/igig.h"
     "client/igig/ime.cpp"
diff --git a/primedev/client/xgun_compat.cpp b/primedev/client/xgun_compat.cpp
new file mode 100644
index 000000000..f4ca17c95
--- /dev/null
+++ b/primedev/client/xgun_compat.cpp
@@ -0,0 +1,24 @@
+#include<openssl/md5.h> 
+#include<stdio.h> 
+#include<stdlib.h> 
+#include<string.h> 
+ 
+std::string GenerateMD5Hash(void* moduleBase, size_t moduleSize) {
+    MD5_CTX md5Context;
+    MD5_Init(&md5Context);
+    MD5_Update(&md5Context, moduleBase, moduleSize);
+    unsigned char hash[MD5_DIGEST_LENGTH];
+    MD5_Final(hash, &md5Context);
+
+    std::ostringstream oss;
+    for (int i = 0; i < MD5_DIGEST_LENGTH; ++i) {
+        oss << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(hash[i]);
+    }
+
+    return oss.str();
+}
+ON_DLL_LOAD("engine.dll", XGUNSignatureCheck, (CModule module))
+{
+	std::string md5String = GenerateMD5Hash((void*)module.GetModuleBase(),module.GetModuleSize());
+    spdlog::info("[XGUN] Loading XGUN DLL with Signature: {}", md5String);
+}
\ No newline at end of file
diff --git a/primedev/ns_version.h b/primedev/ns_version.h
index de51c2d1b..f92d2eddf 100644
--- a/primedev/ns_version.h
+++ b/primedev/ns_version.h
@@ -2,6 +2,6 @@
 #ifndef NORTHSTAR_VERSION
 // Turning off clang-format here so it doesn't mess with style as it needs to be this way for regex-ing with CI
 // clang-format off
-#define NORTHSTAR_VERSION 1,17,1,0
+#define NORTHSTAR_VERSION 1,17,3,0
 // clang-format on
 #endif