aws_sdk_s3/endpoint_lib/
host.rs

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1// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
2/*
3 *  Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
4 *  SPDX-License-Identifier: Apache-2.0
5 */
6
7use crate::endpoint_lib::diagnostic::DiagnosticCollector;
8
9pub(crate) fn is_valid_host_label(label: &str, allow_dots: bool, e: &mut DiagnosticCollector) -> bool {
10    if allow_dots {
11        for part in label.split('.') {
12            if !is_valid_host_label(part, false, e) {
13                return false;
14            }
15        }
16        true
17    } else {
18        if label.is_empty() || label.len() > 63 {
19            e.report_error("host was too short or too long");
20            return false;
21        }
22        label.chars().enumerate().all(|(idx, ch)| match (ch, idx) {
23            ('-', 0) => {
24                e.report_error("cannot start with `-`");
25                false
26            }
27            _ => ch.is_alphanumeric() || ch == '-',
28        })
29    }
30}
31
32#[cfg(all(test, feature = "gated-tests"))]
33mod test {
34    use proptest::proptest;
35
36    fn is_valid_host_label(label: &str, allow_dots: bool) -> bool {
37        super::is_valid_host_label(label, allow_dots, &mut DiagnosticCollector::new())
38    }
39
40    #[allow(clippy::bool_assert_comparison)]
41    #[test]
42    fn basic_cases() {
43        assert_eq!(is_valid_host_label("", false), false);
44        assert_eq!(is_valid_host_label("", true), false);
45        assert_eq!(is_valid_host_label(".", true), false);
46        assert_eq!(is_valid_host_label("a.b", true), true);
47        assert_eq!(is_valid_host_label("a.b", false), false);
48        assert_eq!(is_valid_host_label("a.b.", true), false);
49        assert_eq!(is_valid_host_label("a.b.c", true), true);
50        assert_eq!(is_valid_host_label("a_b", true), false);
51        assert_eq!(is_valid_host_label(&"a".repeat(64), false), false);
52        assert_eq!(is_valid_host_label(&format!("{}.{}", "a".repeat(63), "a".repeat(63)), true), true);
53    }
54
55    #[allow(clippy::bool_assert_comparison)]
56    #[test]
57    fn start_bounds() {
58        assert_eq!(is_valid_host_label("-foo", false), false);
59        assert_eq!(is_valid_host_label("-foo", true), false);
60        assert_eq!(is_valid_host_label(".foo", true), false);
61        assert_eq!(is_valid_host_label("a-b.foo", true), true);
62    }
63
64    use crate::endpoint_lib::diagnostic::DiagnosticCollector;
65    use proptest::prelude::*;
66    proptest! {
67        #[test]
68        fn no_panics(s in any::<String>(), dots in any::<bool>()) {
69            is_valid_host_label(&s, dots);
70        }
71    }
72}
aws_sdk_s3/endpoint_lib/host.rs

aws_sdk_s3/endpoint_lib/
host.rs
