first commit

src/librenet_scanner/actions.py

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+from __future__ import annotations
+
+import re
+import socket
+
+
+MAC_RE = re.compile(r"^[0-9A-Fa-f]{2}(?::[0-9A-Fa-f]{2}){5}$")
+
+
+def normalize_mac(mac: str) -> str:
+    value = mac.strip().replace("-", ":")
+    if not MAC_RE.match(value):
+        raise ValueError(f"Adresse MAC invalide : {mac}")
+    return value.upper()
+
+
+def send_magic_packet(mac: str, broadcast: str = "255.255.255.255", port: int = 9) -> None:
+    normalized = normalize_mac(mac)
+    raw_mac = bytes.fromhex(normalized.replace(":", ""))
+    packet = b"\xff" * 6 + raw_mac * 16
+    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+        sock.sendto(packet, (broadcast, port))