Add symbolic refs for fn names

ush-obfuscate/src/proc_impl_switcher.rs

@@ -58,9 +58,9 @@ pub mod proc_impl {
     use proc_macro::TokenStream;
     use syn::{LitStr, parse_macro_input};
 
-    unwrap_string!(xor);
+    passtrough!(xor, crate::obfuscate::xor);
     delete!(junk_asm);
 
     passtrough!(sym, crate::symbolic_ref::sym_ref);
-    unwrap_string!(sym_fn);
+    passtrough!(sym_fn, crate::symbolic_ref::sym_ref_fn);
 }

ush-obfuscate/src/symbolic_ref/mod.rs

@@ -3,7 +3,7 @@ use std::collections::HashMap;
 use base62::{Base62, hash};
 use proc_macro::TokenStream;
 use quote::quote;
-use syn::{LitStr, parse_macro_input};
+use syn::{ItemFn, LitStr, parse_macro_input};
 
 use crate::env::get_encryption_key;
 
@@ -15,34 +15,61 @@ pub fn get_symbol_number() -> usize {
 }
 
 #[allow(static_mut_refs)]
-pub fn get_symbol(text: String) -> usize {
+pub fn get_symbol(text: &str) -> usize {
     unsafe {
-        if let Some(n) = SYM_COUNTER.iter().position(|r| r == &text) {
+        if let Some(n) = SYM_COUNTER.iter().position(|r| r == text) {
             n
         } else {
-            SYM_COUNTER.push(text);
+            SYM_COUNTER.push(text.to_string());
 
             SYM_COUNTER.len() - 1
         }
     }
 }
 
+fn ref_string(input: String) -> String {
+    let n = get_symbol(&input);
+
+    let data = base62::encode_usize(n);
+    let key = hash(&get_encryption_key().as_bytes());
+
+    let encoded = format!("_{}_", Base62::encode_full(&data, &key));
+
+    println!("Aliased '{}' as '{encoded}'", input);
+
+    encoded
+}
+
 pub fn sym_ref(input: TokenStream) -> TokenStream {
     // Parse the input as a string literal
     let lit_str = parse_macro_input!(input as LitStr);
     let original_name = lit_str.value();
 
-    let n = get_symbol(original_name);
+    let encoded = ref_string(original_name);
-
-    let data = base62::encode_usize(n);
-    let key = hash(&get_encryption_key().as_bytes());
-
-    let encoded = format!("_{}_", Base62::encode_full(&data, &key));
-
-    println!("Aliased '{}' as '{encoded}'", lit_str.value());
 
     // Expand to a static string literal
     TokenStream::from(quote! {
         #encoded
     })
 }
+
+pub fn sym_ref_fn(input: TokenStream) -> TokenStream {
+    // Parse the input function
+    let func = parse_macro_input!(input as ItemFn);
+
+    // Get the original function name
+    let fn_name = func.sig.ident.to_string();
+
+    // Generate the new, obfuscated name
+    let obfuscated_name = ref_string(fn_name);
+
+    // Create a new string literal for the name
+    let new_name_lit = LitStr::new(&obfuscated_name, func.sig.ident.span());
+
+    // Re-build the function, but add #[no_mangle]
+    // and rename the *exported* symbol via #[export_name]
+    TokenStream::from(quote! {
+        #[unsafe(export_name = #new_name_lit)]
+        #func
+    })
+}