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use std::error::Error;
use std::fmt;
#[cfg(unix)]
use libc::*;
#[derive(Debug)]
pub enum ConfigError {
FailedToBind,
InvalidHexValue,
InvalidPortNumber,
InvalidFwmark,
InvalidKey,
InvalidSocketAddr,
InvalidKeepaliveInterval,
InvalidAllowedIp,
InvalidOperation,
LineTooLong,
IOError,
UnsupportedValue,
UnsupportedProtocolVersion,
}
impl fmt::Display for ConfigError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "ConfigError(errno = {})", self.errno())
}
}
impl Error for ConfigError {
fn description(&self) -> &str {
""
}
fn source(&self) -> Option<&(dyn Error + 'static)> {
None
}
}
#[cfg(unix)]
impl ConfigError {
pub fn errno(&self) -> i32 {
// TODO: obtain the correct errorno values
match self {
// insufficient perms
ConfigError::FailedToBind => EPERM,
// parsing of value failed
ConfigError::InvalidHexValue => EINVAL,
ConfigError::InvalidPortNumber => EINVAL,
ConfigError::InvalidFwmark => EINVAL,
ConfigError::InvalidSocketAddr => EINVAL,
ConfigError::InvalidKeepaliveInterval => EINVAL,
ConfigError::InvalidAllowedIp => EINVAL,
ConfigError::InvalidOperation => EINVAL,
ConfigError::UnsupportedValue => EINVAL,
// other protocol errors
ConfigError::LineTooLong => EPROTO,
ConfigError::InvalidKey => EPROTO,
ConfigError::UnsupportedProtocolVersion => EPROTO,
// IO
ConfigError::IOError => EIO,
}
}
}
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