Determine parent or child wallet from the Fingerprint

Author: greekfetacheese

src/core/bip32/primitives.rs

@@ -24,6 +24,10 @@ impl From<[u8; 4]> for KeyFingerprint {
 }
 
 impl KeyFingerprint {
+   pub fn is_zero(&self) -> bool {
+      self.0.iter().all(|b| *b == 0)
+   }
+   
    /// Determines if the slice represents the same key fingerprint
    pub fn eq_slice(self, other: &[u8]) -> bool {
       self.0 == other

src/core/user/wallet.rs

@@ -219,7 +219,7 @@ impl Wallet {
    }
 
    pub fn is_master(&self) -> bool {
-      self.xkey_info.as_ref().map(|info| info.index == 0).unwrap_or(false)
+      self.xkey_info.as_ref().map(|info| info.parent.is_zero()).unwrap_or(false)
    }
 
    pub fn is_hardened(&self) -> bool {