move pw and cert auth errors out

wisp/src/extensions/cert.rs

@@ -20,10 +20,6 @@ use super::{AnyProtocolExtension, ProtocolExtension, ProtocolExtensionBuilder};
 /// Certificate authentication protocol extension error.
 #[derive(Debug)]
 pub enum CertAuthError {
-	/// Invalid or unsupported certificate type
-	InvalidCertType,
-	/// Invalid signature
-	InvalidSignature,
 	/// ED25519 error
 	Ed25519(ed25519::Error),
 	/// Getrandom error
@@ -33,8 +29,6 @@ pub enum CertAuthError {
 impl std::fmt::Display for CertAuthError {
 	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 		match self {
-			Self::InvalidCertType => write!(f, "Invalid or unsupported certificate type"),
-			Self::InvalidSignature => write!(f, "Invalid signature"),
 			Self::Ed25519(x) => write!(f, "ED25519: {:?}", x),
 			Self::Getrandom(x) => write!(f, "getrandom: {:?}", x),
 		}
@@ -78,6 +72,17 @@ pub struct VerifyKey {
 	pub verifier: Arc<dyn Verifier<Signature>>,
 }
 
+impl VerifyKey {
+	/// Create a new ED25519 verification key.
+	pub fn new_ed25519(verifier: Arc<dyn Verifier<Signature>>, hash: [u8; 64]) -> Self {
+		Self {
+			cert_type: SupportedCertificateTypes::Ed25519,
+			hash,
+			verifier,
+		}
+	}
+}
+
 /// Signing key.
 #[derive(Clone)]
 pub struct SigningKey {
@@ -88,6 +93,16 @@ pub struct SigningKey {
 	/// Signer.
 	pub signer: Arc<dyn Signer<Signature>>,
 }
+impl SigningKey {
+	/// Create a new ED25519 signing key.
+	pub fn new_ed25519(signer: Arc<dyn Signer<Signature>>, hash: [u8; 64]) -> Self {
+		Self {
+			cert_type: SupportedCertificateTypes::Ed25519,
+			hash,
+			signer,
+		}
+	}
+}
 
 /// Certificate authentication protocol extension.
 #[derive(Debug, Clone)]
@@ -241,7 +256,7 @@ impl ProtocolExtensionBuilder for CertAuthProtocolExtensionBuilder {
 			} => {
 				// validate and parse response
 				let cert_type = SupportedCertificateTypes::from_bits(bytes.get_u8())
-					.ok_or(CertAuthError::InvalidCertType)?;
+					.ok_or(WispError::CertAuthExtensionSigInvalid)?;
 				let hash = bytes.split_to(64);
 				let sig = Signature::from_slice(&bytes).map_err(CertAuthError::from)?;
 				let is_valid = verifiers
@@ -252,15 +267,15 @@ impl ProtocolExtensionBuilder for CertAuthProtocolExtensionBuilder {
 				if is_valid {
 					Ok(CertAuthProtocolExtension::ServerVerified.into())
 				} else {
-					Err(CertAuthError::InvalidSignature.into())
+					Err(WispError::CertAuthExtensionSigInvalid)
 				}
 			}
 			Self::ClientBeforeChallenge { signer } => {
 				// sign challenge
 				let cert_types = SupportedCertificateTypes::from_bits(bytes.get_u8())
-					.ok_or(CertAuthError::InvalidCertType)?;
+					.ok_or(WispError::CertAuthExtensionSigInvalid)?;
 				if !cert_types.iter().any(|x| x == signer.cert_type) {
-					return Err(CertAuthError::InvalidCertType.into());
+					return Err(WispError::CertAuthExtensionSigInvalid);
 				}
 
 				let signed: Bytes = signer

wisp/src/extensions/password.rs

@@ -4,7 +4,7 @@
 //!
 //! See [the docs](https://github.com/MercuryWorkshop/wisp-protocol/blob/v2/protocol.md#0x02---password-authentication)
 
-use std::{collections::HashMap, error::Error, fmt::Display, string::FromUtf8Error};
+use std::collections::HashMap;
 
 use async_trait::async_trait;
 use bytes::{Buf, BufMut, Bytes, BytesMut};
@@ -118,38 +118,6 @@ impl ProtocolExtension for PasswordProtocolExtension {
 	}
 }
 
-#[derive(Debug)]
-enum PasswordProtocolExtensionError {
-	Utf8Error(FromUtf8Error),
-	InvalidUsername,
-	InvalidPassword,
-}
-
-impl Display for PasswordProtocolExtensionError {
-	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-		use PasswordProtocolExtensionError as E;
-		match self {
-			E::Utf8Error(e) => write!(f, "{}", e),
-			E::InvalidUsername => write!(f, "Invalid username"),
-			E::InvalidPassword => write!(f, "Invalid password"),
-		}
-	}
-}
-
-impl Error for PasswordProtocolExtensionError {}
-
-impl From<PasswordProtocolExtensionError> for WispError {
-	fn from(value: PasswordProtocolExtensionError) -> Self {
-		WispError::ExtensionImplError(Box::new(value))
-	}
-}
-
-impl From<FromUtf8Error> for PasswordProtocolExtensionError {
-	fn from(value: FromUtf8Error) -> Self {
-		PasswordProtocolExtensionError::Utf8Error(value)
-	}
-}
-
 impl From<PasswordProtocolExtension> for AnyProtocolExtension {
 	fn from(value: PasswordProtocolExtension) -> Self {
 		AnyProtocolExtension(Box::new(value))
@@ -212,20 +180,17 @@ impl ProtocolExtensionBuilder for PasswordProtocolExtensionBuilder {
 					return Err(WispError::PacketTooSmall);
 				}
 
-				use PasswordProtocolExtensionError as EError;
 				let username =
-					String::from_utf8(payload.copy_to_bytes(username_len as usize).to_vec())
-						.map_err(|x| WispError::from(EError::from(x)))?;
+					std::str::from_utf8(&payload.split_to(username_len as usize))?.to_string();
 				let password =
-					String::from_utf8(payload.copy_to_bytes(password_len as usize).to_vec())
-						.map_err(|x| WispError::from(EError::from(x)))?;
+					std::str::from_utf8(&payload.split_to(password_len as usize))?.to_string();
 
 				let Some(user) = self.users.iter().find(|x| *x.0 == username) else {
-					return Err(EError::InvalidUsername.into());
+					return Err(WispError::PasswordExtensionCredsInvalid);
 				};
 
 				if *user.1 != password {
-					return Err(EError::InvalidPassword.into());
+					return Err(WispError::PasswordExtensionCredsInvalid);
 				}
 
 				Ok(PasswordProtocolExtension {

wisp/src/lib.rs

@@ -68,6 +68,7 @@ pub enum WispError {
 	IncompatibleProtocolVersion,
 	/// The stream had already been closed.
 	StreamAlreadyClosed,
+
 	/// The websocket frame received had an invalid type.
 	WsFrameInvalidType,
 	/// The websocket frame received was not finished.
@@ -78,18 +79,14 @@ pub enum WispError {
 	WsImplSocketClosed,
 	/// The websocket implementation did not support the action.
 	WsImplNotSupported,
-	/// Error specific to the protocol extension implementation.
-	ExtensionImplError(Box<dyn std::error::Error + Sync + Send>),
-	/// The protocol extension implementation did not support the action.
-	ExtensionImplNotSupported,
-	/// The specified protocol extensions are not supported by the server.
-	ExtensionsNotSupported(Vec<u8>),
+
 	/// The string was invalid UTF-8.
 	Utf8Error(std::str::Utf8Error),
 	/// The integer failed to convert.
 	TryFromIntError(std::num::TryFromIntError),
 	/// Other error.
 	Other(Box<dyn std::error::Error + Sync + Send>),
+
 	/// Failed to send message to multiplexor task.
 	MuxMessageFailedToSend,
 	/// Failed to receive message from multiplexor task.
@@ -98,6 +95,17 @@ pub enum WispError {
 	MuxTaskEnded,
 	/// Multiplexor task already started.
 	MuxTaskStarted,
+
+	/// Error specific to the protocol extension implementation.
+	ExtensionImplError(Box<dyn std::error::Error + Sync + Send>),
+	/// The protocol extension implementation did not support the action.
+	ExtensionImplNotSupported,
+	/// The specified protocol extensions are not supported by the server.
+	ExtensionsNotSupported(Vec<u8>),
+	/// The password authentication username/password was invalid.
+	PasswordExtensionCredsInvalid,
+	/// The certificate authentication signature was invalid.
+	CertAuthExtensionSigInvalid,
 }
 
 impl From<std::str::Utf8Error> for WispError {
@@ -153,6 +161,12 @@ impl std::fmt::Display for WispError {
 			Self::MuxMessageFailedToRecv => write!(f, "Failed to receive multiplexor message"),
 			Self::MuxTaskEnded => write!(f, "Multiplexor task ended"),
 			Self::MuxTaskStarted => write!(f, "Multiplexor task already started"),
+			Self::PasswordExtensionCredsInvalid => {
+				write!(f, "Password extension: Invalid username/password")
+			}
+			Self::CertAuthExtensionSigInvalid => {
+				write!(f, "Certificate authentication extension: Invalid signature")
+			}
 		}
 	}
 }
@@ -243,36 +257,64 @@ impl ServerMux {
 		W: ws::WebSocketWrite + Send + 'static,
 	{
 		let tx = ws::LockedWebSocketWrite::new(Box::new(tx));
+		let ret_tx = tx.clone();
+		let ret = async {
+			tx.write_frame(Packet::new_continue(0, buffer_size).into())
+				.await?;
 
-		tx.write_frame(Packet::new_continue(0, buffer_size).into())
-			.await?;
+			let (supported_extensions, extra_packet, downgraded) =
+				if let Some(mut builders) = extension_builders {
+					send_info_packet(&tx, &mut builders).await?;
+					maybe_wisp_v2(&mut rx, &tx, &mut builders).await?
+				} else {
+					(Vec::new(), None, true)
+				};
 
-		let (supported_extensions, extra_packet, downgraded) =
-			if let Some(mut builders) = extension_builders {
-				send_info_packet(&tx, &mut builders).await?;
-				maybe_wisp_v2(&mut rx, &tx, &mut builders).await?
-			} else {
-				(Vec::new(), None, true)
-			};
+			let (mux_result, muxstream_recv) = MuxInner::new_server(
+				AppendingWebSocketRead(extra_packet, rx),
+				tx.clone(),
+				supported_extensions.clone(),
+				buffer_size,
+			);
 
-		let (mux_result, muxstream_recv) = MuxInner::new_server(
-			AppendingWebSocketRead(extra_packet, rx),
-			tx.clone(),
-			supported_extensions.clone(),
-			buffer_size,
-		);
+			Ok(ServerMuxResult(
+				Self {
+					muxstream_recv,
+					actor_tx: mux_result.actor_tx,
+					downgraded,
+					supported_extensions,
+					tx,
+					actor_exited: mux_result.actor_exited,
+				},
+				mux_result.mux.into_future(),
+			))
+		}
+		.await;
 
-		Ok(ServerMuxResult(
-			Self {
-				muxstream_recv,
-				actor_tx: mux_result.actor_tx,
-				downgraded,
-				supported_extensions,
-				tx,
-				actor_exited: mux_result.actor_exited,
+		match ret {
+			Ok(x) => Ok(x),
+			Err(x) => match x {
+				WispError::PasswordExtensionCredsInvalid => {
+					ret_tx
+						.write_frame(
+							Packet::new_close(0, CloseReason::ExtensionsPasswordAuthFailed).into(),
+						)
+						.await?;
+					ret_tx.close().await?;
+					Err(x)
+				}
+				WispError::CertAuthExtensionSigInvalid => {
+					ret_tx
+						.write_frame(
+							Packet::new_close(0, CloseReason::ExtensionsCertAuthFailed).into(),
+						)
+						.await?;
+					ret_tx.close().await?;
+					Err(x)
+				}
+				x => Err(x),
 			},
-			mux_result.mux.into_future(),
-		))
+		}
 	}
 
 	/// Wait for a stream to be created.
@@ -300,12 +342,11 @@ impl ServerMux {
 		self.close_internal(None).await
 	}
 
-	/// Close all streams and send an extension incompatibility error to the client.
+	/// Close all streams and send a close reason on stream ID 0.
 	///
 	/// Also terminates the multiplexor future.
-	pub async fn close_extension_incompat(&self) -> Result<(), WispError> {
-		self.close_internal(Some(CloseReason::IncompatibleExtensions))
-			.await
+	pub async fn close_with_reason(&self, reason: CloseReason) -> Result<(), WispError> {
+		self.close_internal(Some(reason)).await
 	}
 
 	/// Get a protocol extension stream for sending packets with stream id 0.
@@ -346,18 +387,23 @@ where
 	) -> Result<(ServerMux, F), WispError> {
 		let mut unsupported_extensions = Vec::new();
 		for extension in extensions {
-			if !self.0.supported_extensions.iter().any(|x| x.get_id() == *extension) {
+			if !self
+				.0
+				.supported_extensions
+				.iter()
+				.any(|x| x.get_id() == *extension)
+			{
 				unsupported_extensions.push(*extension);
 			}
 		}
 		if unsupported_extensions.is_empty() {
 			Ok((self.0, self.1))
 		} else {
-			self.0.close_extension_incompat().await?;
+			self.0
+				.close_with_reason(CloseReason::ExtensionsIncompatible)
+				.await?;
 			self.1.await?;
-			Err(WispError::ExtensionsNotSupported(
-				unsupported_extensions,
-			))
+			Err(WispError::ExtensionsNotSupported(unsupported_extensions))
 		}
 	}
 
@@ -483,12 +529,11 @@ impl ClientMux {
 		self.close_internal(None).await
 	}
 
-	/// Close all streams and send an extension incompatibility error to the client.
+	/// Close all streams and send a close reason on stream ID 0.
 	///
 	/// Also terminates the multiplexor future.
-	pub async fn close_extension_incompat(&self) -> Result<(), WispError> {
-		self.close_internal(Some(CloseReason::IncompatibleExtensions))
-			.await
+	pub async fn close_with_reason(&self, reason: CloseReason) -> Result<(), WispError> {
+		self.close_internal(Some(reason)).await
 	}
 
 	/// Get a protocol extension stream for sending packets with stream id 0.
@@ -528,14 +573,21 @@ where
 	) -> Result<(ClientMux, F), WispError> {
 		let mut unsupported_extensions = Vec::new();
 		for extension in extensions {
-			if !self.0.supported_extensions.iter().any(|x| x.get_id() == *extension) {
+			if !self
+				.0
+				.supported_extensions
+				.iter()
+				.any(|x| x.get_id() == *extension)
+			{
 				unsupported_extensions.push(*extension);
 			}
 		}
 		if unsupported_extensions.is_empty() {
 			Ok((self.0, self.1))
 		} else {
-			self.0.close_extension_incompat().await?;
+			self.0
+				.close_with_reason(CloseReason::ExtensionsIncompatible)
+				.await?;
 			self.1.await?;
 			Err(WispError::ExtensionsNotSupported(unsupported_extensions))
 		}

wisp/src/packet.rs

@@ -60,7 +60,7 @@ mod close {
 		/// Unexpected stream closure due to a network error.
 		Unexpected = 0x03,
 		/// Incompatible extensions. Only used during the handshake.
-		IncompatibleExtensions = 0x04,
+		ExtensionsIncompatible = 0x04,
 		/// Stream creation failed due to invalid information.
 		ServerStreamInvalidInfo = 0x41,
 		/// Stream creation failed due to an unreachable destination host.
@@ -77,6 +77,10 @@ mod close {
 		ServerStreamThrottled = 0x49,
 		/// The client has encountered an unexpected error.
 		ClientUnexpected = 0x81,
+		/// Authentication failed due to invalid username/password.
+		ExtensionsPasswordAuthFailed = 0xc0,
+		/// Authentication failed due to invalid signature.
+		ExtensionsCertAuthFailed = 0xc1,
 	}
 
 	impl TryFrom<u8> for CloseReason {
@@ -87,7 +91,7 @@ mod close {
 				0x01 => Ok(R::Unknown),
 				0x02 => Ok(R::Voluntary),
 				0x03 => Ok(R::Unexpected),
-				0x04 => Ok(R::IncompatibleExtensions),
+				0x04 => Ok(R::ExtensionsIncompatible),
 				0x41 => Ok(R::ServerStreamInvalidInfo),
 				0x42 => Ok(R::ServerStreamUnreachable),
 				0x43 => Ok(R::ServerStreamConnectionTimedOut),
@@ -111,7 +115,7 @@ mod close {
 					C::Unknown => "Unknown close reason",
 					C::Voluntary => "Voluntarily closed",
 					C::Unexpected => "Unexpectedly closed",
-					C::IncompatibleExtensions => "Incompatible protocol extensions",
+					C::ExtensionsIncompatible => "Incompatible protocol extensions",
 					C::ServerStreamInvalidInfo =>
 						"Stream creation failed due to invalid information",
 					C::ServerStreamUnreachable =>
@@ -124,6 +128,8 @@ mod close {
 					C::ServerStreamBlockedAddress => "Destination address is blocked",
 					C::ServerStreamThrottled => "Throttled",
 					C::ClientUnexpected => "Client encountered unexpected error",
+					C::ExtensionsPasswordAuthFailed => "Invalid username/password",
+					C::ExtensionsCertAuthFailed => "Invalid signature",
 				}
 			)
 		}