[go: up one dir, main page]

idna 1.1.0

IDNA (Internationalizing Domain Names in Applications) and Punycode.
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
137
138
139
140

#![allow(deprecated)]

use assert_matches::assert_matches;

/// https://github.com/servo/rust-url/issues/373
#[test]
fn test_punycode_prefix_with_length_check() {
    let config = idna::Config::default()
        .verify_dns_length(true)
        .check_hyphens(true)
        .use_std3_ascii_rules(true);

    assert!(config.to_ascii("xn--").is_err());
    assert!(config.to_ascii("xn---").is_err());
    assert!(config.to_ascii("xn-----").is_err());
    assert!(config.to_ascii("xn--.").is_err());
    assert!(config.to_ascii("xn--...").is_err());
    assert!(config.to_ascii(".xn--").is_err());
    assert!(config.to_ascii("...xn--").is_err());
    assert!(config.to_ascii("xn--.xn--").is_err());
    assert!(config.to_ascii("xn--.example.org").is_err());
}

/// https://github.com/servo/rust-url/issues/373
#[test]
fn test_punycode_prefix_without_length_check() {
    let config = idna::Config::default()
        .verify_dns_length(false)
        .check_hyphens(true)
        .use_std3_ascii_rules(true);

    assert!(config.to_ascii("xn--").is_err());
    assert!(config.to_ascii("xn---").is_err());
    assert!(config.to_ascii("xn-----").is_err());
    assert!(config.to_ascii("xn--.").is_err());
    assert!(config.to_ascii("xn--...").is_err());
    assert!(config.to_ascii(".xn--").is_err());
    assert!(config.to_ascii("...xn--").is_err());
    assert!(config.to_ascii("xn--.xn--").is_err());
    assert!(config.to_ascii("xn--.example.org").is_err());
}

#[test]
fn test_punycode_invalid_encoding() {
    let config = idna::Config::default();
    assert!(config.to_ascii("xn--55555577").is_err());
}

// http://www.unicode.org/reports/tr46/#Table_Example_Processing
#[test]
fn test_examples() {
    let mut codec = idna::Idna::default();
    let mut out = String::new();

    assert_matches!(codec.to_unicode("Bloß.de", &mut out), Ok(()));
    assert_eq!(out, "bloß.de");

    out.clear();
    assert_matches!(codec.to_unicode("xn--blo-7ka.de", &mut out), Ok(()));
    assert_eq!(out, "bloß.de");

    out.clear();
    assert_matches!(codec.to_unicode("u\u{308}.com", &mut out), Ok(()));
    assert_eq!(out, "ü.com");

    out.clear();
    assert_matches!(codec.to_unicode("xn--tda.com", &mut out), Ok(()));
    assert_eq!(out, "ü.com");

    out.clear();
    assert_matches!(codec.to_unicode("xn--u-ccb.com", &mut out), Err(_));

    out.clear();
    assert_matches!(codec.to_unicode("a⒈com", &mut out), Err(_));

    out.clear();
    assert_matches!(codec.to_unicode("xn--a-ecp.ru", &mut out), Err(_));

    out.clear();
    assert_matches!(codec.to_unicode("xn--0.pt", &mut out), Err(_));

    out.clear();
    assert_matches!(codec.to_unicode("日本語。ＪＰ", &mut out), Ok(()));
    assert_eq!(out, "日本語.jp");

    out.clear();
    assert_matches!(codec.to_unicode("☕.us", &mut out), Ok(()));
    assert_eq!(out, "☕.us");
}

#[test]
fn test_v5() {
    let config = idna::Config::default()
        .verify_dns_length(true)
        .use_std3_ascii_rules(true)
        .check_hyphens(true);

    // IdnaTest:784 蔏｡𑰺
    assert!(config.to_ascii("\u{11C3A}").is_err());
    assert!(config.to_ascii("\u{850f}.\u{11C3A}").is_err());
    assert!(config.to_ascii("\u{850f}\u{ff61}\u{11C3A}").is_err());
}

#[test]
fn test_v8_bidi_rules() {
    let config = idna::Config::default()
        .verify_dns_length(true)
        .use_std3_ascii_rules(true)
        .check_hyphens(true);

    assert_eq!(config.to_ascii("abc").unwrap(), "abc");
    assert_eq!(config.to_ascii("123").unwrap(), "123");
    assert_eq!(config.to_ascii("אבּג").unwrap(), "xn--kdb3bdf");
    assert_eq!(config.to_ascii("ابج").unwrap(), "xn--mgbcm");
    assert_eq!(config.to_ascii("abc.ابج").unwrap(), "abc.xn--mgbcm");
    assert_eq!(config.to_ascii("אבּג.ابج").unwrap(), "xn--kdb3bdf.xn--mgbcm");

    // Bidi domain names cannot start with digits
    assert!(config.to_ascii("0a.\u{05D0}").is_err());
    assert!(config.to_ascii("0à.\u{05D0}").is_err());

    // Bidi chars may be punycode-encoded
    assert!(config.to_ascii("xn--0ca24w").is_err());
}

#[test]
fn emoji_domains() {
    // HOT BEVERAGE is allowed here...
    let config = idna::Config::default()
        .verify_dns_length(true)
        .use_std3_ascii_rules(true)
        .check_hyphens(true);
    assert_eq!(config.to_ascii("☕.com").unwrap(), "xn--53h.com");
}

#[test]
fn unicode_before_delimiter() {
    let config = idna::Config::default();
    assert!(config.to_ascii("xn--f\u{34a}-PTP").is_err());
}