summaryrefslogtreecommitdiffstats
path: root/adenosine-cli/src/identifiers.rs
blob: 7f88df5ca653ac50bc46d765b8b5b251cd4a97da (plain)
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
137
138
139
140
141
142
143
144
use anyhow::{anyhow, Result};
use lazy_static::lazy_static;
use regex::Regex;
use std::fmt;
use std::str::FromStr;

#[derive(Debug, PartialEq, Eq, Clone)]
pub enum DidOrHost {
    Did(String, String),
    Host(String),
}

impl FromStr for DidOrHost {
    type Err = anyhow::Error;

    /// DID syntax is specified in: <https://w3c.github.io/did-core/#did-syntax>
    ///
    /// Lazy partial hostname regex, isn't very correct.
    fn from_str(s: &str) -> Result<Self, Self::Err> {
        lazy_static! {
            static ref DID_RE: Regex =
                Regex::new(r"^did:([a-z]{1,64}):([a-zA-Z0-9\-.]{1,1024})$").unwrap();
        }
        lazy_static! {
            static ref HOSTNAME_RE: Regex =
                Regex::new(r"^[A-Za-z][A-Za-z0-9-]*(\.[A-Za-z][A-Za-z0-9-]*)+$").unwrap();
        }
        if let Some(caps) = DID_RE.captures(s) {
            Ok(Self::Did(caps[1].to_string(), caps[2].to_string()))
        } else if HOSTNAME_RE.is_match(s) {
            Ok(Self::Host(s.to_string()))
        } else {
            Err(anyhow!("does not match as a DID or hostname: {}", s))
        }
    }
}

impl fmt::Display for DidOrHost {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::Host(v) => write!(f, "{}", v),
            Self::Did(m, v) => write!(f, "did:{}:{}", m, v),
        }
    }
}

#[test]
fn test_didorhost() {
    assert_eq!(
        DidOrHost::from_str("hyde.test").unwrap(),
        DidOrHost::Host("hyde.test".to_string())
    );
    assert_eq!(
        DidOrHost::from_str("did:method:blah").unwrap(),
        DidOrHost::Did("method".to_string(), "blah".to_string())
    );

    assert!(DidOrHost::from_str("barestring").is_err());
    assert!(DidOrHost::from_str("did:partial:").is_err());
    assert!(DidOrHost::from_str("").is_err());
    assert!(DidOrHost::from_str(" ").is_err());
    assert!(DidOrHost::from_str("1234").is_err());

    assert!(DidOrHost::from_str("mutli.part.domain").is_ok());
    assert!(DidOrHost::from_str("did:is:weird").is_ok());
    assert!(DidOrHost::from_str("did:plc:bv6ggog3tya2z3vxsub7hnal").is_ok());
}

#[derive(Debug, PartialEq, Eq, Clone)]
pub struct AtUri {
    pub repository: DidOrHost,
    pub collection: Option<String>,
    pub record: Option<String>,
    pub fragment: Option<String>,
}

impl FromStr for AtUri {
    type Err = anyhow::Error;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        lazy_static! {
            static ref ATURI_RE: Regex = Regex::new(r"^at://([a-zA-Z0-9:_\.-]+)(/([a-zA-Z0-9\.]+))?(/([a-zA-Z0-9\.-]+))?(#([a-zA-Z0-9/-]+))?$").unwrap();
        }
        if let Some(caps) = ATURI_RE.captures(s) {
            let uri = AtUri {
                repository: DidOrHost::from_str(&caps[1])?,
                collection: caps.get(3).map(|v| v.as_str().to_string()),
                record: caps.get(5).map(|v| v.as_str().to_string()),
                fragment: caps.get(7).map(|v| v.as_str().to_string()),
            };
            Ok(uri)
        } else {
            Err(anyhow!("couldn't parse as an at:// URI: {}", s))
        }
    }
}

impl fmt::Display for AtUri {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "at://{}", self.repository)?;
        if let Some(ref c) = self.collection {
            write!(f, "/{}", c)?;
        };
        if let Some(ref r) = self.record {
            write!(f, "/{}", r)?;
        };
        if let Some(ref v) = self.fragment {
            write!(f, "#{}", v)?;
        };
        Ok(())
    }
}

#[test]
fn test_aturi() {
    assert!(AtUri::from_str("at://bob.com").is_ok());
    assert!(AtUri::from_str("at://did:plc:bv6ggog3tya2z3vxsub7hnal").is_ok());
    assert!(AtUri::from_str("at://bob.com/io.example.song").is_ok());
    assert!(AtUri::from_str("at://bob.com/io.example.song/3yI5-c1z-cc2p-1a").is_ok());
    assert!(AtUri::from_str("at://bob.com/io.example.song/3yI5-c1z-cc2p-1a#/title").is_ok());
    assert!(
        AtUri::from_str("at://did:plc:ltk4reuh7rkoy2frnueetpb5/app.bsky.follow/3jg23pbmlhc2a")
            .is_ok()
    );

    let uri = AtUri {
        repository: DidOrHost::Did("some".to_string(), "thing".to_string()),
        collection: Some("com.atproto.record".to_string()),
        record: Some("asdf-123".to_string()),
        fragment: Some("/path".to_string()),
    };
    assert_eq!(
        "at://did:some:thing/com.atproto.record/asdf-123#/path",
        uri.to_string()
    );
    println!("{:?}", AtUri::from_str(&uri.to_string()));
    assert!(AtUri::from_str(&uri.to_string()).is_ok());

    let uri = AtUri::from_str("at://bob.com/io.example.song/3yI5-c1z-cc2p-1a#/title").unwrap();
    assert_eq!(uri.repository, DidOrHost::Host("bob.com".to_string()));
    assert_eq!(uri.collection, Some("io.example.song".to_string()));
    assert_eq!(uri.record, Some("3yI5-c1z-cc2p-1a".to_string()));
    assert_eq!(uri.fragment, Some("/title".to_string()));
}