ferron_common/util/
match_hostname.rs

1/// Matches the request hostname against a configured hostname
2pub fn match_hostname(hostname: Option<&str>, req_hostname: Option<&str>) -> bool {
3  if hostname.is_none() || hostname == Some("*") {
4    return true;
5  }
6
7  if let (Some(hostname), Some(req_hostname)) = (hostname, req_hostname) {
8    if hostname.starts_with("*.") && hostname != "*." {
9      let hostnames_root = &hostname[2..];
10      if req_hostname == hostnames_root
11        || (req_hostname.len() > hostnames_root.len() && req_hostname.ends_with(&format!(".{hostnames_root}")[..]))
12      {
13        return true;
14      }
15    } else if req_hostname == hostname {
16      return true;
17    }
18  }
19
20  false
21}
22
23#[cfg(test)]
24mod tests {
25  use super::*;
26
27  #[test]
28  fn should_return_true_if_hostname_is_undefined() {
29    assert!(match_hostname(None, Some("example.com")));
30  }
31
32  #[test]
33  fn should_return_true_if_hostname_is_star() {
34    assert!(match_hostname(Some("*"), Some("example.com")));
35  }
36
37  #[test]
38  fn should_return_true_if_req_hostname_matches_hostname_exactly() {
39    assert!(match_hostname(Some("example.com"), Some("example.com")));
40  }
41
42  #[test]
43  fn should_return_false_if_req_hostname_does_not_match_hostname_exactly() {
44    assert!(!match_hostname(Some("example.com"), Some("example.org")));
45  }
46
47  #[test]
48  fn should_return_true_if_hostname_starts_with_star_dot_and_req_hostname_matches_the_root() {
49    assert!(match_hostname(Some("*.example.com"), Some("sub.example.com")));
50  }
51
52  #[test]
53  fn should_return_false_if_hostname_starts_with_star_dot_and_req_hostname_does_not_match_the_root() {
54    assert!(!match_hostname(Some("*.example.com"), Some("example.org")));
55  }
56
57  #[test]
58  fn should_return_true_if_hostname_starts_with_star_dot_and_req_hostname_is_the_root() {
59    assert!(match_hostname(Some("*.example.com"), Some("example.com")));
60  }
61
62  #[test]
63  fn should_return_false_if_hostname_is_star_dot() {
64    assert!(!match_hostname(Some("*."), Some("example.com")));
65  }
66
67  #[test]
68  fn should_return_false_if_req_hostname_is_undefined() {
69    assert!(!match_hostname(Some("example.com"), None));
70  }
71
72  #[test]
73  fn should_return_false_if_hostname_does_not_start_with_star_dot_and_req_hostname_does_not_match() {
74    assert!(!match_hostname(Some("sub.example.com"), Some("example.com")));
75  }
76
77  #[test]
78  fn should_return_true_if_hostname_starts_with_star_dot_and_req_hostname_matches_the_root_with_additional_subdomains()
79  {
80    assert!(match_hostname(Some("*.example.com"), Some("sub.sub.example.com")));
81  }
82
83  #[test]
84  fn should_return_false_if_hostname_starts_with_star_dot_and_req_hostname_does_not_match_the_root_with_additional_subdomains(
85  ) {
86    assert!(!match_hostname(Some("*.example.com"), Some("sub.sub.example.org")));
87  }
88}
ferron_common/util/match_hostname.rs

ferron_common/util/
match_hostname.rs
