mhost 0.11.3

Fast, async DNS lookup library and CLI -- modern dig/host replacement with parallel multi-server queries, DoH, DoT, subdomain discovery, and zone verification
Documentation 
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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136

// Copyright 2017-2021 Lukas Pustina <lukas@pustina.de>
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.

use serde::{Deserialize, Serialize};
use std::fmt;

#[derive(Debug, PartialEq, Eq, Hash, Clone, Serialize, Deserialize)]
#[allow(clippy::upper_case_acronyms)]
pub struct SSHFP {
    algorithm: Algorithm,
    fingerprint_type: FingerprintType,
    fingerprint: Vec<u8>,
}

impl SSHFP {
    pub fn new(algorithm: Algorithm, fingerprint_type: FingerprintType, fingerprint: Vec<u8>) -> SSHFP {
        SSHFP {
            algorithm,
            fingerprint_type,
            fingerprint,
        }
    }

    pub fn algorithm(&self) -> Algorithm {
        self.algorithm
    }

    pub fn fingerprint_type(&self) -> FingerprintType {
        self.fingerprint_type
    }

    pub fn fingerprint(&self) -> &[u8] {
        &self.fingerprint
    }
}

iana_enum! {
    #[allow(clippy::upper_case_acronyms)]
    pub enum Algorithm {
        Reserved = 0 => "Reserved",
        RSA = 1 => "RSA",
        DSA = 2 => "DSA",
        ECDSA = 3 => "ECDSA",
        Ed25519 = 4 => "Ed25519",
        Ed448 = 6 => "Ed448",
    }
}

iana_enum! {
    pub enum FingerprintType {
        Reserved = 0 => "Reserved",
        SHA1 = 1 => "SHA-1",
        SHA256 = 2 => "SHA-256",
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn sshfp_new_and_accessors() {
        let fp = vec![0xaa, 0xbb, 0xcc];
        let sshfp = SSHFP::new(Algorithm::RSA, FingerprintType::SHA256, fp.clone());
        assert_eq!(sshfp.algorithm(), Algorithm::RSA);
        assert_eq!(sshfp.fingerprint_type(), FingerprintType::SHA256);
        assert_eq!(sshfp.fingerprint(), &fp[..]);
    }

    #[test]
    fn algorithm_from_u8_known_values() {
        assert_eq!(Algorithm::from(0), Algorithm::Reserved);
        assert_eq!(Algorithm::from(1), Algorithm::RSA);
        assert_eq!(Algorithm::from(2), Algorithm::DSA);
        assert_eq!(Algorithm::from(3), Algorithm::ECDSA);
        assert_eq!(Algorithm::from(4), Algorithm::Ed25519);
        assert_eq!(Algorithm::from(6), Algorithm::Ed448);
    }

    #[test]
    fn algorithm_from_u8_unassigned() {
        assert_eq!(Algorithm::from(5), Algorithm::Unassigned(5));
        assert_eq!(Algorithm::from(7), Algorithm::Unassigned(7));
        assert_eq!(Algorithm::from(255), Algorithm::Unassigned(255));
    }

    #[test]
    fn algorithm_display() {
        assert_eq!(Algorithm::Reserved.to_string(), "Reserved");
        assert_eq!(Algorithm::RSA.to_string(), "RSA");
        assert_eq!(Algorithm::DSA.to_string(), "DSA");
        assert_eq!(Algorithm::ECDSA.to_string(), "ECDSA");
        assert_eq!(Algorithm::Ed25519.to_string(), "Ed25519");
        assert_eq!(Algorithm::Ed448.to_string(), "Ed448");
        assert_eq!(Algorithm::Unassigned(42).to_string(), "Unassigned(42)");
    }

    #[test]
    fn fingerprint_type_from_u8_known_values() {
        assert_eq!(FingerprintType::from(0), FingerprintType::Reserved);
        assert_eq!(FingerprintType::from(1), FingerprintType::SHA1);
        assert_eq!(FingerprintType::from(2), FingerprintType::SHA256);
    }

    #[test]
    fn fingerprint_type_from_u8_unassigned() {
        assert_eq!(FingerprintType::from(3), FingerprintType::Unassigned(3));
        assert_eq!(FingerprintType::from(255), FingerprintType::Unassigned(255));
    }

    #[test]
    fn fingerprint_type_display() {
        assert_eq!(FingerprintType::Reserved.to_string(), "Reserved");
        assert_eq!(FingerprintType::SHA1.to_string(), "SHA-1");
        assert_eq!(FingerprintType::SHA256.to_string(), "SHA-256");
        assert_eq!(FingerprintType::Unassigned(10).to_string(), "Unassigned(10)");
    }
}

#[doc(hidden)]
impl From<hickory_resolver::proto::rr::rdata::SSHFP> for SSHFP {
    fn from(sshfp: hickory_resolver::proto::rr::rdata::SSHFP) -> Self {
        let algo_u8: u8 = sshfp.algorithm().into();
        let fp_type_u8: u8 = sshfp.fingerprint_type().into();

        SSHFP {
            algorithm: algo_u8.into(),
            fingerprint_type: fp_type_u8.into(),
            fingerprint: sshfp.fingerprint().to_vec(),
        }
    }
}