mls-spec 3.0.0-pre.1

This crate is a repository of MLS / RFC9420-related data structures.
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

#![allow(dead_code, unused_macros)]

pub mod assertions {
    #[macro_export]
    macro_rules! assert_eq_err {
        ($actual:expr, $expected:expr, $msg:expr) => {{
            color_eyre::eyre::ensure!(
                $actual == $expected,
                "{}\n{}",
                $msg,
                pretty_assertions::Comparison::new(&$actual, &$expected)
            )
        }};
        ($actual:expr, $expected:expr) => {{
            color_eyre::eyre::ensure!(
                $actual == $expected,
                "{}",
                pretty_assertions::Comparison::new(&$actual, &$expected)
            )
        }};
    }

    #[macro_export]
    macro_rules! assert_ne_err {
        ($actual:expr, $expected:expr, $msg:expr) => {
            color_eyre::eyre::ensure!(
                $actual != $expected,
                "{} {} == {}",
                $msg,
                stringify!($actual),
                strinfify!($expected),
            )
        };
        ($actual:expr, $expected:expr) => {
            color_eyre::eyre::ensure!(
                $actual != $expected,
                "{} == {}",
                stringify!($actual),
                stringify!($expected)
            )
        };
    }

    #[macro_export]
    macro_rules! assert_err {
        ($assertion:expr, $msg:expr) => {
            color_eyre::eyre::ensure!($assertion, "{} {:?} != true", $msg, $assertion)
        };
        ($assertion:expr) => {
            color_eyre::eyre::ensure!($assertion, "{:?} != true", $assertion)
        };
    }

    pub use assert_eq_err;
    pub use assert_err;
    pub use assert_ne_err;
}

// TODO: Use this macro to roundtrip all the structs in the drafts
pub(crate) mod testing {
    #[cfg(not(feature = "serde"))]
    pub trait Target<'a>:
        crate::Parsable<'a> + crate::Serializable + std::fmt::Debug + PartialEq + 'a
    {
    }

    #[cfg(not(feature = "serde"))]
    impl<'a, T> Target<'a> for T where
        T: crate::Parsable<'a> + crate::Serializable + std::fmt::Debug + PartialEq + 'a
    {
    }

    #[cfg(feature = "serde")]
    pub trait Target<'a>:
        crate::Parsable<'a>
        + crate::Serializable
        + serde::Serialize
        + serde::de::DeserializeOwned
        + std::fmt::Debug
        + PartialEq
        + 'a
    {
    }

    #[cfg(feature = "serde")]
    impl<'a, T> Target<'a> for T where
        T: crate::Parsable<'a>
            + crate::Serializable
            + serde::Serialize
            + serde::de::DeserializeOwned
            + std::fmt::Debug
            + PartialEq
            + 'a
    {
    }

    pub(crate) fn roundtrip<'a, T: Target<'a>>(
        value: &T,
        value_bytes: &'a [u8],
        ctx: &str,
    ) -> color_eyre::eyre::Result<()> {
        let _ = color_eyre::install();
        let value2 = T::from_tls_bytes(&value_bytes)?;
        super::assertions::assert_eq_err!(value, &value2);
        println!("==== --> [{ctx}] TLSPL OK");

        #[cfg(feature = "serde")]
        {
            let value3_bytes = postcard::to_stdvec(&value)?;
            let value3 = postcard::from_bytes(&value3_bytes)?;
            super::assertions::assert_eq_err!(value, &value3);
            println!("==== --> [{ctx}] serde+postcard OK");

            let value4_bytes = serde_json::to_vec(&value)?;
            let value4 = serde_json::from_slice(&value4_bytes)?;
            super::assertions::assert_eq_err!(value, &value4);
            println!("==== --> [{ctx}] serde+json OK");
        }
        Ok(())
    }

    #[macro_export]
    macro_rules! generate_roundtrip_test {
        ($testname:ident, $iv:expr) => {
            #[test]
            fn $testname() -> color_eyre::eyre::Result<()> {
                use crate::Serializable as _;
                let bytes = $iv.to_tls_bytes()?;
                $crate::test_utils::testing::roundtrip(&$iv, &bytes, stringify!($testname))?;
                Ok(())
            }
        };
    }
}