Store the client's UUID and username when logging in

protocol/src/protocol/mod.rs

@@ -346,6 +346,28 @@ impl Serializable for f64 {
 #[derive(Debug, PartialEq, Eq, Hash, Clone)]
 pub struct UUID(u64, u64);
 
+impl UUID {
+    pub fn from_str(s: &str) -> UUID {
+        use rustc_serialize::hex::FromHex;
+        // TODO: Panics aren't the best idea here
+        if s.len() != 36 {
+            panic!("Invalid UUID format");
+        }
+        let mut parts = s[..8].from_hex().unwrap();
+        parts.extend_from_slice(&s[9..13].from_hex().unwrap());
+        parts.extend_from_slice(&s[14..18].from_hex().unwrap());
+        parts.extend_from_slice(&s[19..23].from_hex().unwrap());
+        parts.extend_from_slice(&s[24..36].from_hex().unwrap());
+        let mut high = 0u64;
+        let mut low = 0u64;
+        for i in 0 .. 8 {
+            high |= (parts[i] as u64) << (56 - i*8);
+            low |= (parts[i + 8] as u64) << (56 - i*8);
+        }
+        UUID(high, low)
+    }
+}
+
 impl Default for UUID {
     fn default() -> Self {
         UUID(0, 0)