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// Copyright 2019 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//! Errors during identity key operations.
use std::error::Error;
use std::fmt;
/// An error during decoding of key material.
#[derive(Debug)]
pub struct DecodingError {
msg: String,
source: Option<Box<dyn Error + Send + Sync>>,
}
impl DecodingError {
#[cfg(not(all(
feature = "ecdsa",
feature = "rsa",
feature = "secp256k1",
not(target_arch = "wasm32")
)))]
pub(crate) fn missing_feature(feature_name: &'static str) -> Self {
Self {
msg: format!("cargo feature `{feature_name}` is not enabled"),
source: None,
}
}
pub(crate) fn failed_to_parse<E, S>(what: &'static str, source: S) -> Self
where
E: Error + Send + Sync + 'static,
S: Into<Option<E>>,
{
Self {
msg: format!("failed to parse {what}"),
source: match source.into() {
None => None,
Some(e) => Some(Box::new(e)),
},
}
}
pub(crate) fn bad_protobuf(
what: &'static str,
source: impl Error + Send + Sync + 'static,
) -> Self {
Self {
msg: format!("failed to decode {what} from protobuf"),
source: Some(Box::new(source)),
}
}
pub(crate) fn unknown_key_type(key_type: i32) -> Self {
Self {
msg: format!("unknown key-type {key_type}"),
source: None,
}
}
pub(crate) fn decoding_unsupported(key_type: &'static str) -> Self {
Self {
msg: format!("decoding {key_type} key from Protobuf is unsupported"),
source: None,
}
}
pub(crate) fn encoding_unsupported(key_type: &'static str) -> Self {
Self {
msg: format!("encoding {key_type} key to Protobuf is unsupported"),
source: None,
}
}
}
impl fmt::Display for DecodingError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Key decoding error: {}", self.msg)
}
}
impl Error for DecodingError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
self.source.as_ref().map(|s| &**s as &dyn Error)
}
}
/// An error during signing of a message.
#[derive(Debug)]
pub struct SigningError {
msg: String,
source: Option<Box<dyn Error + Send + Sync>>,
}
/// An error during encoding of key material.
impl SigningError {
#[cfg(any(feature = "secp256k1", feature = "rsa"))]
pub(crate) fn new<S: ToString>(msg: S) -> Self {
Self {
msg: msg.to_string(),
source: None,
}
}
#[cfg(feature = "rsa")]
pub(crate) fn source(self, source: impl Error + Send + Sync + 'static) -> Self {
Self {
source: Some(Box::new(source)),
..self
}
}
}
impl fmt::Display for SigningError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Key signing error: {}", self.msg)
}
}
impl Error for SigningError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
self.source.as_ref().map(|s| &**s as &dyn Error)
}
}