feat: rust proto implementation

domo_proto/src/packet/identifier.rs

@@ -0,0 +1,45 @@
+use std::fmt::{Formatter, LowerHex};
+
+#[derive(Debug, Eq, PartialEq)]
+pub struct Identifier {
+    pub bytes: [u8; 4],
+}
+
+impl LowerHex for Identifier {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{:x}{:x}{:x}{:x}",
+            self.bytes[0], self.bytes[1], self.bytes[2], self.bytes[3]
+        )
+    }
+}
+
+impl From<&[u8]> for Identifier {
+    fn from(value: &[u8]) -> Self {
+        let mut bytes = [0_u8; 4];
+        bytes[..value.len()].copy_from_slice(value);
+        Identifier {
+            bytes: [bytes[0], bytes[1], bytes[2], bytes[3]],
+        }
+    }
+}
+
+impl From<Vec<u8>> for Identifier {
+    fn from(value: Vec<u8>) -> Self {
+        Identifier::from(value.as_slice())
+    }
+}
+
+impl From<u32> for Identifier {
+    fn from(value: u32) -> Self {
+        Identifier {
+            bytes: [
+                (value >> 24) as u8,
+                (value >> 16) as u8,
+                (value >> 8) as u8,
+                (value >> 0) as u8,
+            ],
+        }
+    }
+}