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use std::{fmt, io, net::SocketAddr};
use crate::HostAddress;
#[derive(Debug)]
pub enum Error {
JumpHostConnectFail {
jump_host_addr: HostAddress<'static>,
io_error: io::Error,
},
AsyncSessionInitialize(io::Error),
DnsResolverCreate(async_std_resolver::ResolveError),
DnsResolverLookup(async_std_resolver::ResolveError),
JumpHostIpResolutionFail {
jump_host_addr: String,
},
LocalSocketAddr {
local_socket: SocketAddr,
io_error: io::Error,
},
LocalSocketBind {
local_socket: SocketAddr,
io_error: io::Error,
},
PrivateKeyPlainPath(plain_path::HomeDirNotFound),
SshHandshakeFail(io::Error),
SshUserAuthFail(io::Error),
SshUserAuthError(async_ssh2_lite::ssh2::Error),
SshUserAuthUnknownError,
SshTunnelOpenFail(io::Error),
SshTunnelListenerCreate(io::Error),
SshTunnelStreamCreate(io::Error),
SshStreamerSpawnFail(tokio::task::JoinError),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Self::JumpHostConnectFail { jump_host_addr, .. } => {
write!(f, "Failed to connect to jump host: `{}`.", jump_host_addr)
}
Self::AsyncSessionInitialize(..) => {
write!(f, "Failed to initialize SSH session with jump host.")
}
Self::DnsResolverCreate(..) => write!(f, "Failed to construct DNS resolver."),
Self::DnsResolverLookup(resolve_error) => {
write!(f, "Failed to lookup IP for jump host: `{}`.", resolve_error)
}
Self::JumpHostIpResolutionFail { jump_host_addr } => {
write!(
f,
"Failed to find IPv4 address for jump host: `{}`.",
jump_host_addr
)
}
Self::LocalSocketAddr { local_socket, .. } => write!(
f,
"Failed to retrieve socket address after binding to: {}.",
local_socket
),
Self::LocalSocketBind { local_socket, .. } => {
write!(f, "Failed to bind to local socket: {}.", local_socket)
}
Self::PrivateKeyPlainPath(..) => write!(f, "Failed to get private key plain path."),
Self::SshHandshakeFail(..) => write!(f, "SSH handshake with jump host failed."),
Self::SshUserAuthFail(..) => write!(f, "SSH user auth with jump host failed."),
Self::SshUserAuthError(..) => write!(f, "SSH user auth with jump host failed.",),
Self::SshUserAuthUnknownError => {
write!(f, "SSH user auth with jump host failed with unknown cause.")
}
Self::SshTunnelOpenFail(..) => write!(f, "Failed to open SSH tunnel."),
Self::SshTunnelListenerCreate(..) => write!(f, "Failed to spawn SSH tunnel listener"),
Self::SshTunnelStreamCreate(..) => write!(f, "Failed to spawn SSH tunnel stream."),
Self::SshStreamerSpawnFail(..) => write!(f, "Failed to join SSH tunnel streamer task."),
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Self::JumpHostConnectFail { io_error, .. } => Some(io_error),
Self::AsyncSessionInitialize(io_error) => Some(io_error),
Self::DnsResolverCreate(resolve_error) => Some(resolve_error),
Self::DnsResolverLookup(resolve_error) => Some(resolve_error),
Self::JumpHostIpResolutionFail { .. } => None,
Self::LocalSocketAddr { io_error, .. } => Some(io_error),
Self::LocalSocketBind { io_error, .. } => Some(io_error),
Self::PrivateKeyPlainPath(home_dir_not_found) => Some(home_dir_not_found),
Self::SshHandshakeFail(io_error) => Some(io_error),
Self::SshUserAuthFail(io_error) => Some(io_error),
Self::SshUserAuthError(ssh2_error) => Some(ssh2_error),
Self::SshUserAuthUnknownError => None,
Self::SshTunnelOpenFail(io_error) => Some(io_error),
Self::SshTunnelListenerCreate(io_error) => Some(io_error),
Self::SshTunnelStreamCreate(io_error) => Some(io_error),
Self::SshStreamerSpawnFail(join_error) => Some(join_error),
}
}
}