From c5f7a983820fd54add3e3a56328a973bcfda6c11 Mon Sep 17 00:00:00 2001
From: noonebtw <noonebtw@gmail.com>
Date: Thu, 20 Jan 2022 21:30:11 +0100
Subject: [PATCH] lots of debug tracing, fixed bug

---
 src/lib.rs | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 21fd8ec..9694dc1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,7 +11,7 @@ use std::{
 
 use lazy_static::lazy_static;
 use log::error;
-use utils::string::ToWide;
+use utils::{string::ToWide, win32::Win32Error};
 use winapi::{
     shared::ntdef::{HANDLE, ULONG},
     um::{
@@ -105,6 +105,8 @@ impl ImageHelp {
             }
         }?;
 
+        log::debug!("trying GetProcAddress");
+
         let proc_addr = unsafe {
             let func_cname = CString::new(function_name)?;
             let proc_adr = GetProcAddress(module_handle, func_cname.as_ptr());
@@ -117,7 +119,9 @@ impl ImageHelp {
             return Ok(proc_addr.as_ptr() as *const _);
         }
 
-        utils::win32::error::true_or_last_error(|| unsafe {
+        log::debug!("SymLoadModuleExW..");
+
+        match utils::win32::error::true_or_last_error(|| unsafe {
             dbghelp::SymLoadModuleExW(
                 GetCurrentProcess(),
                 null_mut(),
@@ -128,7 +132,14 @@ impl ImageHelp {
                 null_mut(),
                 0,
             ) != 0
-        })?;
+        }) {
+            Ok(_) => Ok(()),
+            Err(Win32Error { error_code: 0 }) => {
+                log::debug!("Symbols already loaded.");
+                Ok(())
+            }
+            Err(err) => Err(err),
+        }?;
 
         let try_find_symbol = || {
             let mut sym_info =
@@ -138,6 +149,8 @@ impl ImageHelp {
             let symbol_name_utf16 = function_name.to_wide_null();
             sym_info.MaxNameLen = 255;
 
+            log::debug!("SymFromNameW..");
+
             utils::win32::error::true_or_last_error(|| unsafe {
                 dbghelp::SymFromNameW(*process_handle, symbol_name_utf16.as_ptr(), &mut sym_info)
                     != 0