bcrypt_wasm/
errors.rs

1use std::error;
2use std::fmt;
3use std::io;
4
5/// Library generic result type.
6pub type BcryptResult<T> = Result<T, BcryptError>;
7
8#[derive(Debug)]
9/// All the errors we can encounter while hashing/verifying
10/// passwords
11pub enum BcryptError {
12    Io(io::Error),
13    CostNotAllowed(u32),
14    InvalidPassword,
15    InvalidCost(String),
16    InvalidPrefix(String),
17    InvalidHash(String),
18    InvalidBase64(char, String),
19    Rand(rand::Error),
20}
21
22macro_rules! impl_from_error {
23    ($f: ty, $e: expr) => {
24        impl From<$f> for BcryptError {
25            fn from(f: $f) -> BcryptError {
26                $e(f)
27            }
28        }
29    };
30}
31
32impl_from_error!(io::Error, BcryptError::Io);
33impl_from_error!(rand::Error, BcryptError::Rand);
34
35impl fmt::Display for BcryptError {
36    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
37        match *self {
38            BcryptError::Io(ref err) => write!(f, "IO error: {}", err),
39            BcryptError::InvalidCost(ref cost) => write!(f, "Invalid Cost: {}", cost),
40            BcryptError::CostNotAllowed(ref cost) => write!(
41                f,
42                "Cost needs to be between {} and {}, got {}",
43                crate::MIN_COST,
44                crate::MAX_COST,
45                cost
46            ),
47            BcryptError::InvalidPassword => write!(f, "Invalid password: contains NULL byte"),
48            BcryptError::InvalidPrefix(ref prefix) => write!(f, "Invalid Prefix: {}", prefix),
49            BcryptError::InvalidHash(ref hash) => write!(f, "Invalid hash: {}", hash),
50            BcryptError::InvalidBase64(ref c, ref hash) => {
51                write!(f, "Invalid base64 char {} in {}", c, hash)
52            }
53            BcryptError::Rand(ref err) => write!(f, "Rand error: {}", err),
54        }
55    }
56}
57
58impl error::Error for BcryptError {
59    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
60        match *self {
61            BcryptError::Io(ref err) => Some(err),
62            BcryptError::InvalidCost(_)
63            | BcryptError::CostNotAllowed(_)
64            | BcryptError::InvalidPassword
65            | BcryptError::InvalidPrefix(_)
66            | BcryptError::InvalidBase64(_, _)
67            | BcryptError::InvalidHash(_) => None,
68            BcryptError::Rand(ref err) => Some(err),
69        }
70    }
71}
bcrypt_wasm/errors.rs

bcrypt_wasm/
errors.rs
