feat(harmony_macros): add ipv4 macro

Adds a new `ipv4` macro to validate IPv4 addresses in proc macros. Removes unused `debug` import from `http.rs`.

harmony-rs/harmony/src/infra/opnsense/http.rs

@@ -1,5 +1,5 @@
 use async_trait::async_trait;
-use log::{debug, info};
+use log::info;
 
 use crate::{
     executors::ExecutorError,
@@ -22,7 +22,7 @@ impl HttpServer for OPNSenseFirewall {
                     .await
                     .map_err(|e| ExecutorError::UnexpectedError(e.to_string()))?;
             }
-            Url::Remote(url) => todo!(),
+            Url::Remote(_url) => todo!(),
         }
         Ok(())
     }

harmony-rs/harmony_macros/src/lib.rs

@@ -25,6 +25,19 @@ pub fn ip(input: TokenStream) -> TokenStream {
     panic!("Invalid IP address: {}", ip_str);
 }
 
+#[proc_macro]
+pub fn ipv4(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as LitStr);
+    let ip_str = input.value();
+
+    if let Ok(_) = ip_str.parse::<std::net::Ipv4Addr>() {
+        let expanded = quote! { #ip_str.parse::<std::net::Ipv4Addr>().unwrap() };
+        return TokenStream::from(expanded);
+    }
+
+    panic!("Invalid IPv4 address: {}", ip_str);
+}
+
 #[proc_macro]
 pub fn mac_address(input: TokenStream) -> TokenStream {
     let input = parse_macro_input!(input as LitStr);