1 files changed, 23 insertions, 0 deletions

diff --git a/src/wol.rs b/src/wol.rs
index 6392366..1176b28 100644
--- a/src/wol.rs
+++ b/src/wol.rs
@@ -1,7 +1,29 @@
 use std::net::{ToSocketAddrs, UdpSocket};
 
+use tracing::trace;
+
 use crate::error::Error;
 
+/// Creates the magic packet from a mac address
+///
+/// # Panics
+///
+/// Panics if `mac_addr` is an invalid mac
+pub fn create_buffer(mac_addr: &str) -> Result<Vec<u8>, Error> {
+    let mut mac = Vec::new();
+    let sp = mac_addr.split(':');
+    for f in sp {
+        mac.push(u8::from_str_radix(f, 16)?);
+    }
+    let mut buf = vec![255; 6];
+    for _ in 0..16 {
+        for i in &mac {
+            buf.push(*i);
+        }
+    }
+    Ok(buf)
+}
+
 /// Sends a buffer on UDP broadcast
 pub fn send_packet<A: ToSocketAddrs>(
     bind_addr: A,
@@ -10,5 +32,6 @@ pub fn send_packet<A: ToSocketAddrs>(
 ) -> Result<usize, Error> {
     let socket = UdpSocket::bind(bind_addr)?;
     socket.set_broadcast(true)?;
+    trace!(?buffer ,"start with");
     Ok(socket.send_to(buffer, broadcast_addr)?)
 }