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use std::fmt::{Debug, Display, Formatter};
use std::{fmt, io};
use std::error::Error;
pub type SshResult<I> = std::result::Result<I, SshError>;
pub struct SshError {
inner: SshErrorKind
}
impl SshError {
pub fn kind(&self) -> SshErrorKind {
match &self.inner {
SshErrorKind::IoError(ie) => {
SshErrorKind::IoError(io::Error::from(ie.kind()))
}
_ => {
unsafe {std::ptr::read(&self.inner as *const SshErrorKind)}
}
}
}
}
impl Debug for SshError {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
match &self.inner {
SshErrorKind::IoError(ie) => {
write!(f, r"IoError: {{ Kind({:?}), Message({}) }}", ie.kind(), ie.to_string())
}
SshErrorKind::ScpError(v) => {
write!(f, r"ScpError({})", v.as_str())
}
_ => { write!(f, r"Error: {{ Kind({:?}), Message({}) }}", self.inner, self.inner.as_str()) }
}
}
}
impl Display for SshError {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
match &self.inner {
SshErrorKind::IoError(ie) => {
write!(f, r"IoError: {{ Kind({:?}) }}", ie.kind())
}
SshErrorKind::ScpError(v) => {
write!(f, r"ScpError({})", v)
}
_ => { write!(f, r"Error: {{ Kind({:?}) }}", self.inner) }
}
}
}
#[derive(Debug)]
pub enum SshErrorKind {
IoError(io::Error),
EncryptionNullError,
FromUtf8Error,
ChannelFailureError,
PasswordError,
UserNullError,
PasswordNullError,
SignatureError,
VersionError,
KeyExchangeError,
MutexError,
ScpError(String),
PathNullError,
LogError,
ConfigNullError,
ClientNullError,
EncryptionError
}
impl PartialEq<Self> for SshErrorKind {
fn eq(&self, other: &Self) -> bool {
match (&self, &other) {
(&SshErrorKind::IoError(io1), &SshErrorKind::IoError(io2)) => io1.kind() == io2.kind(),
(&SshErrorKind::EncryptionNullError, &SshErrorKind::EncryptionNullError) => true,
(&SshErrorKind::FromUtf8Error, &SshErrorKind::FromUtf8Error) => true,
(&SshErrorKind::ChannelFailureError, &SshErrorKind::ChannelFailureError) => true,
(&SshErrorKind::PasswordError, &SshErrorKind::PasswordError) => true,
(&SshErrorKind::UserNullError, &SshErrorKind::UserNullError) => true,
(&SshErrorKind::PasswordNullError, &SshErrorKind::PasswordNullError) => true,
(&SshErrorKind::SignatureError, &SshErrorKind::SignatureError) => true,
(&SshErrorKind::VersionError, &SshErrorKind::VersionError) => true,
(&SshErrorKind::KeyExchangeError, &SshErrorKind::KeyExchangeError) => true,
(&SshErrorKind::MutexError, &SshErrorKind::MutexError) => true,
(&SshErrorKind::ScpError(v1), &SshErrorKind::ScpError(v2)) => v1.eq(v2),
(&SshErrorKind::PathNullError, &SshErrorKind::PathNullError) => true,
(&SshErrorKind::LogError, &SshErrorKind::LogError) => true,
(&SshErrorKind::ConfigNullError, &SshErrorKind::ConfigNullError) => true,
(&SshErrorKind::ClientNullError, &SshErrorKind::ClientNullError) => true,
(&SshErrorKind::EncryptionError, &SshErrorKind::EncryptionError) => true,
_ => false
}
}
}
impl SshErrorKind {
fn as_str(&self) -> &'static str {
match self {
SshErrorKind::FromUtf8Error => "The UTF8 conversion is abnormal",
SshErrorKind::ChannelFailureError => "Connection channel failure",
SshErrorKind::PasswordError => "Password authentication failed",
SshErrorKind::UserNullError => "User null pointer",
SshErrorKind::PasswordNullError => "Password null pointer",
SshErrorKind::SignatureError => "Signature verification failure",
SshErrorKind::VersionError => "Version not supported",
SshErrorKind::KeyExchangeError => "The key exchange algorithm does not match",
SshErrorKind::MutexError => "Call Mutex exception",
SshErrorKind::PathNullError => "Path null pointer",
SshErrorKind::LogError => "Enabling Log Exceptions",
SshErrorKind::EncryptionNullError => "Encrypted null pointer",
SshErrorKind::ConfigNullError => "Config null pointer",
SshErrorKind::ClientNullError => "Client null pointer",
SshErrorKind::EncryptionError => "Encrypted error",
_ => ""
}
}
}
impl Error for SshError {
}
impl From<SshErrorKind> for SshError {
fn from(kind: SshErrorKind) -> SshError {
SshError {
inner: kind
}
}
}
impl From<io::Error> for SshError {
fn from(kind: io::Error) -> Self {
SshError {
inner: SshErrorKind::IoError(io::Error::from(kind.kind()))
}
}
}
impl From<String> for SshError {
fn from(v: String) -> Self {
SshError {
inner: SshErrorKind::ScpError(v)
}
}
}
#[test]
fn test() {
match get_error() {
Ok(_) => {}
Err(e) => {
if e.kind() == SshErrorKind::SignatureError { }
}
}
}
fn get_error() -> Result<(), SshError> {
return Err(SshError::from(SshErrorKind::EncryptionError))
}
