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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
use core::fmt;
use s2n_codec::DecoderError;
/// Error type for TLS-related errors
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[cfg_attr(feature = "thiserror", derive(thiserror::Error))]
pub struct Error {
pub reason: &'static str,
pub code: u8,
}
impl Error {
/// Creates a new `tls::Error`
pub const fn new(code: u8) -> Self {
Self { code, reason: "" }
}
/// Sets the reason for `tls::Error`
#[must_use]
pub const fn with_reason(mut self, reason: &'static str) -> Self {
self.reason = reason;
self
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
if !self.reason.is_empty() {
self.reason.fmt(f)
} else if let Some(description) = self.description() {
description.fmt(f)
} else {
write!(f, "tls::Error({})", self.code)
}
}
}
impl fmt::Debug for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut d = f.debug_struct("tls::Error");
d.field("code", &self.code);
if let Some(description) = self.description() {
d.field("description", &description);
}
if !self.reason.is_empty() {
d.field("reason", &self.reason);
}
d.finish()
}
}
impl From<DecoderError> for Error {
fn from(_: DecoderError) -> Self {
Self::DECODE_ERROR
}
}
macro_rules! alert_descriptions {
($($name:ident = $value:expr),* $(,)?) => {
impl Error {
pub fn description(&self) -> Option<&'static str> {
match self.code {
$(
$value => Some(stringify!($name)),
)*
_ => None,
}
}
$(
pub const $name: Self = Self::new($value);
)*
}
#[test]
fn description_test() {
$(
assert_eq!(&Error::$name.to_string(), stringify!($name));
)*
}
};
}
//= https://www.rfc-editor.org/rfc/rfc8446#appendix-B.2
//# enum { warning(1), fatal(2), (255) } AlertLevel;
//#
//# enum {
//# close_notify(0),
//# unexpected_message(10),
//# bad_record_mac(20),
//# decryption_failed_RESERVED(21),
//# record_overflow(22),
//# decompression_failure_RESERVED(30),
//# handshake_failure(40),
//# no_certificate_RESERVED(41),
//# bad_certificate(42),
//# unsupported_certificate(43),
//# certificate_revoked(44),
//# certificate_expired(45),
//# certificate_unknown(46),
//# illegal_parameter(47),
//# unknown_ca(48),
//# access_denied(49),
//# decode_error(50),
//# decrypt_error(51),
//# export_restriction_RESERVED(60),
//# protocol_version(70),
//# insufficient_security(71),
//# internal_error(80),
//# inappropriate_fallback(86),
//# user_canceled(90),
//# no_renegotiation_RESERVED(100),
//# missing_extension(109),
//# unsupported_extension(110),
//# certificate_unobtainable_RESERVED(111),
//# unrecognized_name(112),
//# bad_certificate_status_response(113),
//# bad_certificate_hash_value_RESERVED(114),
//# unknown_psk_identity(115),
//# certificate_required(116),
//# no_application_protocol(120),
//# (255)
//# } AlertDescription;
//#
//# struct {
//# AlertLevel level;
//# AlertDescription description;
//# } Alert;
alert_descriptions!(
CLOSE_NOTIFY = 0,
UNEXPECTED_MESSAGE = 10,
BAD_RECORD_MAC = 20,
DECRYPTION_FAILED_RESERVED = 21,
RECORD_OVERFLOW = 22,
DECOMPRESSION_FAILURE_RESERVED = 30,
HANDSHAKE_FAILURE = 40,
NO_CERTIFICATE_RESERVED = 41,
BAD_CERTIFICATE = 42,
UNSUPPORTED_CERTIFICATE = 43,
CERTIFICATE_REVOKED = 44,
CERTIFICATE_EXPIRED = 45,
CERTIFICATE_UNKNOWN = 46,
ILLEGAL_PARAMETER = 47,
UNKNOWN_CA = 48,
ACCESS_DENIED = 49,
DECODE_ERROR = 50,
DECRYPT_ERROR = 51,
EXPORT_RESTRICTION_RESERVED = 60,
PROTOCOL_VERSION = 70,
INSUFFICIENT_SECURITY = 71,
INTERNAL_ERROR = 80,
INAPPROPRIATE_FALLBACK = 86,
USER_CANCELED = 90,
NO_RENEGOTIATION_RESERVED = 100,
MISSING_EXTENSION = 109,
UNSUPPORTED_EXTENSION = 110,
CERTIFICATE_UNOBTAINABLE_RESERVED = 111,
UNRECOGNIZED_NAME = 112,
BAD_CERTIFICATE_STATUS_RESPONSE = 113,
BAD_CERTIFICATE_HASH_VALUE_RESERVED = 114,
UNKNOWN_PSK_IDENTITY = 115,
CERTIFICATE_REQUIRED = 116,
NO_APPLICATION_PROTOCOL = 120,
);