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/*
This file is part of gnix (https://codeberg.org/metamuffin/gnix)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2025 metamuffin <metamuffin.org>
*/
#[derive(Debug, thiserror::Error)]
pub enum ServiceError {
#[error("no response generated; the proxy is misconfigured")]
NoResponse,
#[error("request taken; the proxy is misconfigured")]
RequestTaken,
#[error("limit reached. try again")]
Limit(#[from] tokio::sync::TryAcquireError),
#[error("hyper error: {0}")]
Hyper(hyper::Error),
#[error("h3 error: {0}")]
H3(h3::Error),
#[error("host header missing")]
NoHost,
#[error("unknown host")]
UnknownHost,
#[error("unknown path")]
UnknownPath,
#[error("can't connect to the backend")]
CantConnect,
#[error("not found")]
NotFound,
#[error("io error: {0}")]
Io(#[from] std::io::Error),
#[error("bad range")]
BadRange,
#[error("bad utf8")]
BadUtf8(#[from] std::str::Utf8Error),
#[error("bad utf8")]
BadUtf82(#[from] std::string::FromUtf8Error),
#[error("bad utf8")]
BadUtf83(#[from] http::header::ToStrError),
#[error("bad path")]
BadPath,
#[error("bad auth")]
BadAuth,
#[error("unauthorized")]
Unauthorized,
#[error("bad base64: {0}")]
BadBase64(#[from] base64::DecodeError),
#[error("connection upgrade failed")]
UpgradeFailed,
#[error("{0}")]
Custom(String),
#[error("{0}")]
CustomStatic(&'static str),
#[error("parse int error: {0}")]
ParseIntError(#[from] std::num::ParseIntError),
#[error("invalid header")]
InvalidHeader,
#[error("invalid uri")]
InvalidUri,
#[error("impossible error")]
Other,
}
impl ServiceError {
pub fn status_code(&self) -> http::StatusCode {
use http::StatusCode;
match self {
ServiceError::NoResponse => todo!(),
ServiceError::RequestTaken => StatusCode::INTERNAL_SERVER_ERROR,
ServiceError::Limit(_) => StatusCode::TOO_MANY_REQUESTS,
ServiceError::Hyper(_) => StatusCode::INTERNAL_SERVER_ERROR,
ServiceError::H3(_) => StatusCode::INTERNAL_SERVER_ERROR,
ServiceError::NoHost => StatusCode::BAD_REQUEST,
ServiceError::UnknownHost => StatusCode::NOT_FOUND,
ServiceError::UnknownPath => StatusCode::NOT_FOUND,
ServiceError::CantConnect => StatusCode::BAD_GATEWAY,
ServiceError::NotFound => StatusCode::NOT_FOUND,
ServiceError::Io(_) => StatusCode::BAD_REQUEST,
ServiceError::BadRange => StatusCode::RANGE_NOT_SATISFIABLE,
ServiceError::BadUtf8(_) => StatusCode::BAD_REQUEST,
ServiceError::BadUtf82(_) => StatusCode::BAD_REQUEST,
ServiceError::BadUtf83(_) => StatusCode::BAD_REQUEST,
ServiceError::BadPath => StatusCode::BAD_REQUEST,
ServiceError::BadAuth => StatusCode::UNAUTHORIZED,
ServiceError::Unauthorized => StatusCode::UNAUTHORIZED,
ServiceError::BadBase64(_) => StatusCode::BAD_REQUEST,
ServiceError::UpgradeFailed => StatusCode::UPGRADE_REQUIRED,
ServiceError::Custom(_) => StatusCode::BAD_REQUEST,
ServiceError::CustomStatic(_) => StatusCode::BAD_REQUEST,
ServiceError::ParseIntError(_) => StatusCode::BAD_REQUEST,
ServiceError::InvalidHeader => StatusCode::BAD_REQUEST,
ServiceError::InvalidUri => StatusCode::BAD_REQUEST,
ServiceError::Other => StatusCode::INTERNAL_SERVER_ERROR,
}
}
}
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