Added manual specification of interfaces

src/print_dir.rs

@@ -1,8 +1,9 @@
 use std::{fs, io};
+use std::net::IpAddr;
 use std::path::Path;
 use if_addrs::{Interface, get_if_addrs};
 
-pub fn print_single_interface<P: AsRef<Path>>(iface: Interface, path: P) -> io::Result<()> {
+fn print_single_interface<P: AsRef<Path>>(iface: Interface, path: P) -> io::Result<()> {
     for entry in fs::read_dir(path)? {
         let entry = entry?;
         let entry_path = entry.path();
@@ -16,10 +17,21 @@ pub fn print_single_interface<P: AsRef<Path>>(iface: Interface, path: P) -> io::
     Ok(())
 }
 
-pub fn print_all_interface<P: AsRef<Path>>(path: P) {
+fn is_last_octet_one(ip: IpAddr) -> bool {
+    match ip {
+        IpAddr::V4(addr) => addr.octets()[3] == 1,
+        _ => false
+    }
+}
+
+pub fn print_interface<P: AsRef<Path>>(iface_str: &str, path: P) {
     for iface in get_if_addrs().unwrap() {
-        if iface.is_loopback() {
-            continue
+        if iface_str == "all" {
+            if iface.is_loopback() || is_last_octet_one(iface.ip()) {
+                continue
+            }
+        } else {
+            if iface_str != iface.name { continue }
         }
 
         print_single_interface(iface, &path).unwrap();