use std::fmt;
use std::string::FromUtf8Error;
use base64::DecodeError;
use crypto_common::InvalidLength;
use digest::MacError;
use serde_json::Error as JsonError;
use self::Error::*;
use crate::algorithm::AlgorithmType;
#[derive(Debug)]
pub enum Error {
AlgorithmMismatch(AlgorithmType, AlgorithmType),
Base64(DecodeError),
Format,
InvalidSignature,
Json(JsonError),
NoClaimsComponent,
NoHeaderComponent,
NoKeyId,
NoKeyWithKeyId(String),
NoSignatureComponent,
RustCryptoMac(MacError),
RustCryptoMacKeyLength(InvalidLength),
TooManyComponents,
Utf8(FromUtf8Error),
#[cfg(feature = "openssl")]
OpenSsl(openssl::error::ErrorStack),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
match *self {
AlgorithmMismatch(a, b) => {
write!(f, "Expected algorithm type {:?} but found {:?}", a, b)
}
NoKeyId => write!(f, "No key id found"),
NoKeyWithKeyId(ref kid) => write!(f, "Key with key id {} not found", kid),
NoHeaderComponent => write!(f, "No header component found in token string"),
NoClaimsComponent => write!(f, "No claims component found in token string"),
NoSignatureComponent => write!(f, "No signature component found in token string"),
TooManyComponents => write!(f, "Too many components found in token string"),
Format => write!(f, "Format"),
InvalidSignature => write!(f, "Invalid signature"),
Base64(ref x) => write!(f, "{}", x),
Json(ref x) => write!(f, "{}", x),
Utf8(ref x) => write!(f, "{}", x),
RustCryptoMac(ref x) => write!(f, "{}", x),
RustCryptoMacKeyLength(ref x) => write!(f, "{}", x),
#[cfg(feature = "openssl")]
OpenSsl(ref x) => write!(f, "{}", x),
}
}
}
impl std::error::Error for Error {}
macro_rules! error_wrap {
($f:ty, $e:expr) => {
impl From<$f> for Error {
fn from(f: $f) -> Error {
$e(f)
}
}
};
}
error_wrap!(DecodeError, Base64);
error_wrap!(JsonError, Json);
error_wrap!(FromUtf8Error, Utf8);
error_wrap!(MacError, RustCryptoMac);
error_wrap!(InvalidLength, RustCryptoMacKeyLength);
#[cfg(feature = "openssl")]
error_wrap!(openssl::error::ErrorStack, Error::OpenSsl);