small refactor

include/utils.h

@@ -1,5 +1,9 @@
 #pragma once
 
+BOOL string_is_included(
+    IN PCHAR list_of_strings,
+    IN PCHAR string_to_search);
+
 BOOL find_pattern(
     IN PVOID dwAddress,
     IN ULONG32 dwLen,

source/loader.c

@@ -512,26 +512,8 @@ Cleanup:
 BOOL IsExitAPI(
     IN PCHAR name)
 {
-    PCHAR str      = NULL;
-    CHAR  api[128] = { 0 };
-    INT   i        = 0;
-
-    str = "ExitProcess;exit;_exit;_cexit;_c_exit;quick_exit;_Exit;_o_exit;CorExitProcess\0";
-
-    for (;;)
-    {
-        // store string until null byte or semi-colon encountered
-        for (i = 0; str[i] != '\0' && str[i] != ';' && i < 128; i++) api[i] = str[i];
-        // nothing stored? end
-        if (i == 0) break;
-        // skip name plus one for separator
-        str += (i + 1);
-        // store null terminator
-        api[i] = '\0';
-        // if equal, return TRUE
-        if (!_stricmp(api, name)) return TRUE;
-    }
-    return FALSE;
+    PCHAR str = "ExitProcess;exit;_exit;_cexit;_c_exit;quick_exit;_Exit;_o_exit;CorExitProcess\0";
+    return string_is_included(str, name);
 }
 
 // returns TRUE if ptr is heap memory

source/utils.c

@@ -1,5 +1,28 @@
 #include "utils.h"
 
+BOOL string_is_included(
+    IN PCHAR list_of_strings,
+    IN PCHAR string_to_search)
+{
+    CHAR  some_string[256] = { 0 };
+    INT   i                = 0;
+
+    for (;;)
+    {
+        // store string until null byte or semi-colon encountered
+        for (i = 0; list_of_strings[i] != '\0' && list_of_strings[i] != ';' && i < 256; i++) some_string[i] = list_of_strings[i];
+        // nothing stored? end
+        if (i == 0) break;
+        // skip name plus one for separator
+        list_of_strings += (i + 1);
+        // store null terminator
+        some_string[i] = '\0';
+        // if equal, return TRUE
+        if (!_stricmp(some_string, string_to_search)) return TRUE;
+    }
+    return FALSE;
+}
+
 BOOL compare_bytes(
     IN PBYTE pData,
     IN PBYTE bMask,