Update libwebauthn to 0.3.0

Switch from a git rev pin to the published 0.3.0 release on crates.io.

Adapt to new APIs:
- CableQrCodeDevice::new_transient now returns Result<Self, Error>.
- UvUpdate gained a PinNotSet variant; handle it (currently logs an
  error pending UI support for PIN setup).

Author: AlfioEmanueleFresta

Cargo.lock

@@ -11,7 +11,7 @@ async-trait = "0.1.89"
 base64 = "0.22.1"
 credentialsd-common = { path = "../credentialsd-common" }
 futures-lite.workspace = true
-libwebauthn = { git = "https://github.com/linux-credentials/libwebauthn.git", rev="b306a527e5b20bef3126a0ade020ae8269785b4e", features = ["libnfc","pcsc"] }
+libwebauthn = { version = "0.3.0", features = ["libnfc","pcsc"] }
 # TODO: split nfc and pcsc into separate features
 # Also, 0.6.1 fails to build with non-vendored library.
 # https://github.com/alexrsagen/rs-nfc1/issues/15

credentialsd/Cargo.toml

@@ -51,7 +51,13 @@ impl HybridHandler for InternalHybridHandler {
                     QrCodeOperationHint::GetAssertionRequest
                 }
             };
-            let mut device = CableQrCodeDevice::new_transient(hint);
+            let mut device = match CableQrCodeDevice::new_transient(hint) {
+                Ok(device) => device,
+                Err(err) => {
+                    tracing::error!("Failed to create caBLE QR code device: {:?}", err);
+                    return;
+                }
+            };
             let qr_code = device.qr_code.to_string();
             if let Err(err) = tx.send(HybridStateInternal::Init(qr_code)).await {
                 tracing::error!("Failed to send caBLE update: {:?}", err);

credentialsd/src/credential_service/hybrid.rs

@@ -530,6 +530,9 @@ async fn handle_nfc_updates(
             UvUpdate::PresenceRequired => {
                 tracing::debug!("Authenticator requested user presence, but that makes no sense for NFC. Skipping");
             }
+            UvUpdate::PinNotSet(_) => {
+                tracing::error!("Authenticator requested PIN setup, which is not yet supported.");
+            }
         }
     }
     debug!("NFC update channel closed.");

credentialsd/src/credential_service/nfc.rs

@@ -641,6 +641,9 @@ async fn handle_usb_updates(
                     tracing::error!("Authenticator requested user presence, but we cannot relay the message to the credential service: {:?}", err);
                 }
             }
+            UvUpdate::PinNotSet(_) => {
+                tracing::error!("Authenticator requested PIN setup, which is not yet supported.");
+            }
         }
     }
     debug!("USB update channel closed.");