From db9cfb8e29e56b5e3f8cab687b228597e17d8460 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Mon, 23 Sep 2024 15:21:32 +0200
Subject: [PATCH] add crc32 to logs

---
 inc/utils.h |  1 +
 src/debug.c |  2 ++
 src/utils.c | 30 ++++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/inc/utils.h b/inc/utils.h
index c710966..9f7f0ee 100644
--- a/inc/utils.h
+++ b/inc/utils.h
@@ -7,6 +7,7 @@
 
 HMODULE WINAPI util_enumerate_modules(_In_opt_ HMODULE hModuleLast);
 void util_pull_messages();
+unsigned long util_get_crc32(char* filename);
 DWORD util_get_timestamp(HMODULE mod);
 FARPROC util_get_iat_proc(HMODULE mod, char* module_name, char* function_name);
 BOOL util_caller_is_ddraw_wrapper(void* return_address);
diff --git a/src/debug.c b/src/debug.c
index f89b924..96b1b25 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -202,6 +202,8 @@ void dbg_init()
             TRACE("Wine sysname = %s, release = %s\n", sysname, release);
         }
 
+        TRACE("crc32 = %08X\n", util_get_crc32(exe_path));
+
         DWORD timestamp = util_get_timestamp(GetModuleHandleA(NULL));
         if (timestamp)
         {
diff --git a/src/utils.c b/src/utils.c
index 3f22bb7..fd8a524 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1,5 +1,6 @@
 #include <windows.h>
 #include <intrin.h>
+#include <stdio.h>
 #include <math.h>
 #include "ddraw.h"
 #include "debug.h"
@@ -11,6 +12,7 @@
 #include "utils.h"
 #include "config.h"
 #include "versionhelpers.h"
+#include "crc32.h"
 
 
 /*
@@ -105,6 +107,34 @@ DWORD util_get_timestamp(HMODULE mod)
     return nt_headers->FileHeader.TimeDateStamp;
 }
 
+unsigned long util_get_crc32(char* filename)
+{
+    if (!filename)
+        return 0;
+
+    unsigned long crc32 = 0;
+
+    FILE* fp = fopen(filename, "rb");
+    if (fp)
+    {
+        char buf[1024];
+        for (size_t s = 0; (s = fread(buf, 1, sizeof(buf), fp));)
+        {
+            if (ferror(fp))
+            {
+                crc32 = 0;
+                break;
+            }
+
+            crc32 = Crc32_ComputeBuf(crc32, buf, s);
+        }
+
+        fclose(fp);
+    }
+
+    return crc32;
+}
+
 FARPROC util_get_iat_proc(HMODULE mod, char* module_name, char* function_name)
 {
     if (!mod || mod == INVALID_HANDLE_VALUE)