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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. use snow::SnowError; use std::{error::Error, fmt, io}; /// libp2p_noise error type. #[derive(Debug)] pub enum NoiseError { /// An I/O error has been encountered. Io(io::Error), /// An noise framework error has been encountered. Noise(SnowError), /// A public key is invalid. InvalidKey, #[doc(hidden)] __Nonexhaustive } impl fmt::Display for NoiseError { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { match self { NoiseError::Io(e) => write!(f, "{}", e), NoiseError::Noise(e) => write!(f, "{}", e), NoiseError::InvalidKey => f.write_str("invalid public key"), NoiseError::__Nonexhaustive => f.write_str("__Nonexhaustive") } } } impl Error for NoiseError { fn source(&self) -> Option<&(dyn Error + 'static)> { match self { NoiseError::Io(e) => Some(e), NoiseError::Noise(_) => None, // TODO: `SnowError` should implement `Error`. NoiseError::InvalidKey => None, NoiseError::__Nonexhaustive => None } } } impl From<io::Error> for NoiseError { fn from(e: io::Error) -> Self { NoiseError::Io(e) } } impl From<SnowError> for NoiseError { fn from(e: SnowError) -> Self { NoiseError::Noise(e) } }