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80 lines
1.6 KiB
80 lines
1.6 KiB
//! AES errors
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use std::{
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io,
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fmt,
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error,
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};
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use openssl::{
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error::ErrorStack,
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};
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#[derive(Debug)]
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pub enum Error
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{
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Encrypt,
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Decrypt,
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Internal(ErrorStack),
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IO(io::Error),
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Random,
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Length{expected: Option<usize>, got: Option<usize>},
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Unknown,
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}
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impl error::Error for Error
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{
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fn source(&self) -> Option<&(dyn error::Error+'static)>
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{
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match &self {
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Error::Internal(stack) => Some(stack),
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Error::IO(io) => Some(io),
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_ => None,
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}
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}
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}
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impl fmt::Display for Error
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{
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
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{
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write!(f, "aes error: ")?;
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match self
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{
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Error::Random => write!(f, "rng failure"),
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Error::IO(io) => write!(f, "io: {}", io),
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Error::Encrypt => write!(f, "encryption failed"),
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Error::Decrypt => write!(f, "decryption failed"),
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Error::Internal(ssl) => write!(f, "internal: {}", ssl),
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Error::Length{expected: Some(expected), got: Some(got)} => write!(f, "bad length: expected {}, got {}", expected, got),
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Error::Length{expected: Some(expected), ..} => write!(f, "bad length: expected {}", expected),
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Error::Length{got: Some(got), ..} => write!(f, "bad length: got {}", got),
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_ => write!(f, "unknown"),
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}
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}
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}
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impl From<ErrorStack> for Error
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{
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fn from(ssl: ErrorStack) -> Self
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{
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Self::Internal(ssl)
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}
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}
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impl From<getrandom::Error> for Error
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{
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#[inline] fn from(_: getrandom::Error) -> Self
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{
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Self::Random
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}
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}
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impl From<io::Error> for Error
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{
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fn from(i: io::Error) -> Self
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{
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Self::IO(i)
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}
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}
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