133 lines
3.0 KiB
Rust
133 lines
3.0 KiB
Rust
/// Error types for the HTTPS mTLS tunnel.
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///
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/// All errors are designed to be actionable and fail-closed — they never
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/// silently degrade to an insecure path.
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use thiserror::Error;
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/// Errors that occur when loading or configuring TLS material.
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#[derive(Debug, Error)]
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pub enum TlsError {
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#[error("missing {0}")]
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Missing(&'static str),
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#[error("invalid {0}: {1}")]
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Invalid(&'static str, String),
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#[error("certificate identity mismatch: {0}")]
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IdentityMismatch(String),
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#[error("certificate expired: {0}")]
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#[allow(dead_code)]
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Expired(String),
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#[error("certificate verification failed: {0}")]
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VerificationFailed(String),
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#[error("I/O error: {0}")]
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Io(#[from] std::io::Error),
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#[error("rustls error: {0}")]
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#[allow(dead_code)]
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Rustls(String),
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}
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/// Errors that occur during application-level authentication.
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#[derive(Debug, Error)]
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pub enum AuthError {
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#[error("auth token missing")]
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Missing,
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#[error("auth token invalid")]
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Invalid,
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#[error("auth token expired")]
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#[allow(dead_code)]
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Expired,
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#[error("too many auth attempts")]
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#[allow(dead_code)]
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TooManyAttempts,
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}
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/// Errors that occur during tunnel lifecycle operations.
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#[derive(Debug, Error)]
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pub enum TunnelError {
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#[error("TLS error: {0}")]
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Tls(#[from] TlsError),
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#[error("auth error: {0}")]
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Auth(#[from] AuthError),
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#[error("bind error on {0}: {1}")]
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BindError(String, String),
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#[error("connection refused: {0}")]
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ConnectionRefused(String),
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#[error("connection closed")]
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#[allow(dead_code)]
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ConnectionClosed,
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#[error("port {0} already in use")]
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PortInUse(u16),
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#[error("shutdown requested")]
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#[allow(dead_code)]
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Shutdown,
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#[error("I/O error: {0}")]
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Io(#[from] std::io::Error),
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#[error("protocol error: {0}")]
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Protocol(String),
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#[error("timeout: {0}")]
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#[allow(dead_code)]
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Timeout(String),
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}
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/// Errors returned by the connector side.
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#[allow(dead_code)]
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#[derive(Debug, Error)]
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pub enum ConnectorError {
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#[error("TLS handshake failed: {0}")]
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TlsHandshake(String),
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#[error("server certificate verification failed: {0}")]
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ServerCertVerification(String),
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#[error("server certificate identity mismatch for {0}: {1}")]
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ServerIdentityMismatch(String, String),
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#[error("server certificate expired")]
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ServerCertExpired,
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#[error("auth rejected: {0}")]
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AuthRejected(String),
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#[error("connection failed: {0}")]
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ConnectionFailed(String),
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#[error("I/O error: {0}")]
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Io(#[from] std::io::Error),
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#[error("protocol error: {0}")]
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Protocol(String),
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#[error("timeout: {0}")]
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Timeout(String),
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}
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/// Errors returned during hostname resolution.
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#[derive(Debug, Error)]
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pub enum HostError {
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#[error("DNS resolution failed for '{0}': {1}")]
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DnsResolution(String, String),
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#[error("hostname '{0}' is empty or invalid")]
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InvalidHostname(String),
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#[error("no addresses resolved for '{0}'")]
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NoAddresses(String),
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}
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