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use iron::{self, status, IronError, Response};
use std::convert::From;
use std::error::Error;
use std::fmt;
#[derive(Debug)]
pub enum CsrfError {
TokenMissing,
TokenInvalid,
CookieMissing,
NoRandom(::std::io::Error),
}
impl CsrfError {
fn http_status(&self) -> status::Status {
use CsrfError::*;
match *self {
NoRandom(_) => status::InternalServerError,
_ => status::BadRequest,
}
}
}
impl Error for CsrfError {
fn description(&self) -> &str {
use CsrfError::*;
match *self {
TokenMissing => "csrf token is missing",
TokenInvalid => "csrf token is invalid",
CookieMissing => "csrf cookie is missing",
NoRandom(_) => "failed to generate random bytes",
}
}
fn cause(&self) -> Option<&Error> {
match *self {
CsrfError::NoRandom(ref x) => Some(x),
_ => None,
}
}
}
impl fmt::Display for CsrfError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.description())
}
}
impl From<CsrfError> for iron::IronError {
fn from(f: CsrfError) -> Self {
IronError {
response: Response::with((f.http_status(), f.description())),
error: Box::new(f),
}
}
}