vaultwarden/src/error.rs

278 lines
8.7 KiB
Rust

//
// Error generator macro
//
use std::error::Error as StdError;
macro_rules! make_error {
( $( $name:ident ( $ty:ty ): $src_fn:expr, $usr_msg_fun:expr ),+ $(,)? ) => {
const BAD_REQUEST: u16 = 400;
pub enum ErrorKind { $($name( $ty )),+ }
pub struct Error { message: String, error: ErrorKind, error_code: u16 }
$(impl From<$ty> for Error {
fn from(err: $ty) -> Self { Error::from((stringify!($name), err)) }
})+
$(impl<S: Into<String>> From<(S, $ty)> for Error {
fn from(val: (S, $ty)) -> Self {
Error { message: val.0.into(), error: ErrorKind::$name(val.1), error_code: BAD_REQUEST }
}
})+
impl StdError for Error {
fn source(&self) -> Option<&(dyn StdError + 'static)> {
match &self.error {$( ErrorKind::$name(e) => $src_fn(e), )+}
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match &self.error {$(
ErrorKind::$name(e) => f.write_str(&$usr_msg_fun(e, &self.message)),
)+}
}
}
};
}
use diesel::r2d2::PoolError as R2d2Err;
use diesel::result::Error as DieselErr;
use diesel::ConnectionError as DieselConErr;
use diesel_migrations::RunMigrationsError as DieselMigErr;
use handlebars::RenderError as HbErr;
use jsonwebtoken::errors::Error as JwtErr;
use lettre::address::AddressError as AddrErr;
use lettre::error::Error as LettreErr;
use lettre::transport::smtp::Error as SmtpErr;
use openssl::error::ErrorStack as SSLErr;
use regex::Error as RegexErr;
use reqwest::Error as ReqErr;
use rocket::error::Error as RocketErr;
use serde_json::{Error as SerdeErr, Value};
use std::io::Error as IoErr;
use std::time::SystemTimeError as TimeErr;
use tokio_tungstenite::tungstenite::Error as TungstError;
use webauthn_rs::error::WebauthnError as WebauthnErr;
use yubico::yubicoerror::YubicoError as YubiErr;
#[derive(Serialize)]
pub struct Empty {}
// Error struct
// Contains a String error message, meant for the user and an enum variant, with an error of different types.
//
// After the variant itself, there are two expressions. The first one indicates whether the error contains a source error (that we pretty print).
// The second one contains the function used to obtain the response sent to the client
make_error! {
// Just an empty error
Empty(Empty): _no_source, _serialize,
// Used to represent err! calls
Simple(String): _no_source, _api_error,
// Used for special return values, like 2FA errors
Json(Value): _no_source, _serialize,
Db(DieselErr): _has_source, _api_error,
R2d2(R2d2Err): _has_source, _api_error,
Serde(SerdeErr): _has_source, _api_error,
JWt(JwtErr): _has_source, _api_error,
Handlebars(HbErr): _has_source, _api_error,
Io(IoErr): _has_source, _api_error,
Time(TimeErr): _has_source, _api_error,
Req(ReqErr): _has_source, _api_error,
Regex(RegexErr): _has_source, _api_error,
Yubico(YubiErr): _has_source, _api_error,
Lettre(LettreErr): _has_source, _api_error,
Address(AddrErr): _has_source, _api_error,
Smtp(SmtpErr): _has_source, _api_error,
OpenSSL(SSLErr): _has_source, _api_error,
Rocket(RocketErr): _has_source, _api_error,
DieselCon(DieselConErr): _has_source, _api_error,
DieselMig(DieselMigErr): _has_source, _api_error,
Webauthn(WebauthnErr): _has_source, _api_error,
WebSocket(TungstError): _has_source, _api_error,
}
impl std::fmt::Debug for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self.source() {
Some(e) => write!(f, "{}.\n[CAUSE] {:#?}", self.message, e),
None => match self.error {
ErrorKind::Empty(_) => Ok(()),
ErrorKind::Simple(ref s) => {
if &self.message == s {
write!(f, "{}", self.message)
} else {
write!(f, "{}. {}", self.message, s)
}
}
ErrorKind::Json(_) => write!(f, "{}", self.message),
_ => unreachable!(),
},
}
}
}
impl Error {
pub fn new<M: Into<String>, N: Into<String>>(usr_msg: M, log_msg: N) -> Self {
(usr_msg, log_msg.into()).into()
}
pub fn empty() -> Self {
Empty {}.into()
}
#[must_use]
pub fn with_msg<M: Into<String>>(mut self, msg: M) -> Self {
self.message = msg.into();
self
}
#[must_use]
pub const fn with_code(mut self, code: u16) -> Self {
self.error_code = code;
self
}
}
pub trait MapResult<S> {
fn map_res(self, msg: &str) -> Result<S, Error>;
}
impl<S, E: Into<Error>> MapResult<S> for Result<S, E> {
fn map_res(self, msg: &str) -> Result<S, Error> {
self.map_err(|e| e.into().with_msg(msg))
}
}
impl<E: Into<Error>> MapResult<()> for Result<usize, E> {
fn map_res(self, msg: &str) -> Result<(), Error> {
self.and(Ok(())).map_res(msg)
}
}
impl<S> MapResult<S> for Option<S> {
fn map_res(self, msg: &str) -> Result<S, Error> {
self.ok_or_else(|| Error::new(msg, ""))
}
}
#[allow(clippy::unnecessary_wraps)]
const fn _has_source<T>(e: T) -> Option<T> {
Some(e)
}
fn _no_source<T, S>(_: T) -> Option<S> {
None
}
fn _serialize(e: &impl serde::Serialize, _msg: &str) -> String {
serde_json::to_string(e).unwrap()
}
fn _api_error(_: &impl std::any::Any, msg: &str) -> String {
let json = json!({
"Message": msg,
"error": "",
"error_description": "",
"ValidationErrors": {"": [ msg ]},
"ErrorModel": {
"Message": msg,
"Object": "error"
},
"ExceptionMessage": null,
"ExceptionStackTrace": null,
"InnerExceptionMessage": null,
"Object": "error"
});
_serialize(&json, "")
}
//
// Rocket responder impl
//
use std::io::Cursor;
use rocket::http::{ContentType, Status};
use rocket::request::Request;
use rocket::response::{self, Responder, Response};
impl<'r> Responder<'r, 'static> for Error {
fn respond_to(self, _: &Request<'_>) -> response::Result<'static> {
match self.error {
ErrorKind::Empty(_) => {} // Don't print the error in this situation
ErrorKind::Simple(_) => {} // Don't print the error in this situation
_ => error!(target: "error", "{:#?}", self),
};
let code = Status::from_code(self.error_code).unwrap_or(Status::BadRequest);
let body = self.to_string();
Response::build().status(code).header(ContentType::JSON).sized_body(Some(body.len()), Cursor::new(body)).ok()
}
}
//
// Error return macros
//
#[macro_export]
macro_rules! err {
($msg:expr) => {{
error!("{}", $msg);
return Err($crate::error::Error::new($msg, $msg));
}};
($usr_msg:expr, $log_value:expr) => {{
error!("{}. {}", $usr_msg, $log_value);
return Err($crate::error::Error::new($usr_msg, $log_value));
}};
}
macro_rules! err_silent {
($msg:expr) => {{
return Err($crate::error::Error::new($msg, $msg));
}};
($usr_msg:expr, $log_value:expr) => {{
return Err($crate::error::Error::new($usr_msg, $log_value));
}};
}
#[macro_export]
macro_rules! err_code {
($msg:expr, $err_code: expr) => {{
error!("{}", $msg);
return Err($crate::error::Error::new($msg, $msg).with_code($err_code));
}};
($usr_msg:expr, $log_value:expr, $err_code: expr) => {{
error!("{}. {}", $usr_msg, $log_value);
return Err($crate::error::Error::new($usr_msg, $log_value).with_code($err_code));
}};
}
#[macro_export]
macro_rules! err_discard {
($msg:expr, $data:expr) => {{
std::io::copy(&mut $data.open(), &mut std::io::sink()).ok();
return Err($crate::error::Error::new($msg, $msg));
}};
($usr_msg:expr, $log_value:expr, $data:expr) => {{
std::io::copy(&mut $data.open(), &mut std::io::sink()).ok();
return Err($crate::error::Error::new($usr_msg, $log_value));
}};
}
#[macro_export]
macro_rules! err_json {
($expr:expr, $log_value:expr) => {{
return Err(($log_value, $expr).into());
}};
}
#[macro_export]
macro_rules! err_handler {
($expr:expr) => {{
error!(target: "auth", "Unauthorized Error: {}", $expr);
return ::rocket::request::Outcome::Failure((rocket::http::Status::Unauthorized, $expr));
}};
($usr_msg:expr, $log_value:expr) => {{
error!(target: "auth", "Unauthorized Error: {}. {}", $usr_msg, $log_value);
return ::rocket::request::Outcome::Failure((rocket::http::Status::Unauthorized, $usr_msg));
}};
}