1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

//! Error types

use failure::*;
use std::io;
#[cfg(feature = "secret-connection")]
use {chrono, prost, subtle_encoding};

/// Kinds of errors
#[derive(Copy, Clone, Eq, PartialEq, Debug, Fail)]
pub enum Error {
    /// Cryptographic operation failed
    #[fail(display = "cryptographic error")]
    Crypto,

    /// Malformatted or otherwise invalid cryptographic key
    #[fail(display = "invalid key")]
    InvalidKey,

    /// Input/output error
    #[fail(display = "I/O error")]
    Io,

    /// Length incorrect or too long
    #[fail(display = "length error")]
    Length,

    /// Parse error
    #[fail(display = "parse error")]
    Parse,

    /// Network protocol-related errors
    #[fail(display = "protocol error")]
    Protocol,

    /// Value out-of-range
    #[fail(display = "value out of range")]
    OutOfRange,

    /// Signature invalid
    #[fail(display = "bad signature")]
    SignatureInvalid,
}

/// Result type with our error type already defined
pub type Result<T> = std::result::Result<T, Error>;

impl From<chrono::ParseError> for Error {
    fn from(_: chrono::ParseError) -> Error {
        Error::Parse
    }
}

impl From<io::Error> for Error {
    fn from(_other: io::Error) -> Self {
        Error::Io
    }
}

#[cfg(feature = "secret-connection")]
impl From<prost::DecodeError> for Error {
    fn from(_other: prost::DecodeError) -> Self {
        Error::Protocol
    }
}

#[cfg(feature = "secret-connection")]
impl From<prost::EncodeError> for Error {
    fn from(_other: prost::EncodeError) -> Self {
        Error::Protocol
    }
}

impl From<subtle_encoding::Error> for Error {
    fn from(_: subtle_encoding::Error) -> Error {
        Error::Parse
    }
}

impl From<signatory::Error> for Error {
    fn from(_other: signatory::Error) -> Self {
        Error::Crypto
    }
}