rust_web_server/app/controller/not_found/
mod.rs

1use file_ext::FileExt;
2use crate::controller::Controller;
3use crate::header::Header;
4use crate::mime_type::MimeType;
5use crate::range::Range;
6use crate::request::Request;
7use crate::response::{Response, STATUS_CODE_REASON_PHRASE};
8use crate::server::ConnectionInfo;
9
10pub struct NotFoundController;
11
12impl Controller for NotFoundController {
13    fn is_matching(_request: &Request, _connection: &ConnectionInfo) -> bool {
14        true
15    }
16
17    fn process(request: &Request, mut response: Response, _connection: &ConnectionInfo) -> Response {
18        // A file that exists, asked for with a method static files don't
19        // take (POST, PUT, DELETE…): 405 with the methods that work, not
20        // 404 (RFC 9110 §15.5.6, #56).
21        if NotFoundController::is_static_path_with_other_method(request) {
22            response.status_code = *STATUS_CODE_REASON_PHRASE.n405_method_not_allowed.status_code;
23            response.reason_phrase = STATUS_CODE_REASON_PHRASE.n405_method_not_allowed.reason_phrase.to_string();
24            response.headers.push(Header { name: Header::_ALLOW.into(), value: NotFoundController::STATIC_ALLOW.into() });
25            response.content_range_list = vec![Range::get_content_range(
26                b"405 Method Not Allowed".to_vec(),
27                MimeType::TEXT_PLAIN.to_string(),
28            )];
29            return response;
30        }
31
32        response.status_code = *STATUS_CODE_REASON_PHRASE.n404_not_found.status_code;
33        response.reason_phrase = STATUS_CODE_REASON_PHRASE.n404_not_found.reason_phrase.to_string();
34
35
36        if FileExt::does_file_exist(NotFoundController::NOT_FOUND_FILEPATH) {
37            let boxed_content_range =
38                Range::get_content_range_of_a_file(NotFoundController::NOT_FOUND_FILEPATH);
39
40            if boxed_content_range.is_ok() {
41                let content_range = boxed_content_range.unwrap();
42                let content_range_list = vec![content_range];
43                response.content_range_list = content_range_list;
44            } else {
45                let error = boxed_content_range.err().unwrap();
46                let mime_type = MimeType::TEXT_HTML.to_string();
47                let content_range = Range::get_content_range(
48                    Vec::from(error.as_bytes()),
49                    mime_type
50                );
51
52                let content_range_list = vec![content_range];
53                response.content_range_list = content_range_list;
54                response.status_code = *STATUS_CODE_REASON_PHRASE.n500_internal_server_error.status_code;
55                response.reason_phrase = STATUS_CODE_REASON_PHRASE.n500_internal_server_error.reason_phrase.to_string();
56            }
57        } else {
58            let not_found_file = include_bytes!("404.html");
59
60            let content_range =
61                Range::get_content_range(not_found_file.to_vec(), MimeType::TEXT_HTML.to_string());
62
63
64            let content_range_list = vec![content_range];
65            response.content_range_list = content_range_list;
66
67        }
68
69        response
70    }
71}
72
73impl NotFoundController {
74    /// The `Allow` value for a static file.
75    pub const STATIC_ALLOW: &'static str = "GET, HEAD, OPTIONS";
76
77    /// `true` when the request names a file or directory the static server
78    /// would serve, with a method other than GET, HEAD or OPTIONS.
79    fn is_static_path_with_other_method(request: &Request) -> bool {
80        use crate::request::METHOD;
81        if request.method == METHOD.get || request.method == METHOD.head || request.method == METHOD.options {
82            return false;
83        }
84        let Ok(components) = crate::url::URL::parse_request_target(&request.request_uri) else { return false };
85        if components.path == "/" {
86            return false;
87        }
88        let Ok(fs_path) = crate::app::controller::static_resource::static_fs_path(&components.path) else { return false };
89        std::fs::metadata(&fs_path).is_ok() && crate::app::controller::static_resource::inside_root(&fs_path)
90    }
91}
92
93// backward compatability
94impl NotFoundController {
95    pub const NOT_FOUND_FILEPATH: &'static str = "404.html";
96
97    pub fn is_matching_request(_request: &Request) -> bool {
98        true
99    }
100
101    pub fn process_request(_request: &Request, mut response: Response) -> Response {
102        response.status_code = *STATUS_CODE_REASON_PHRASE.n404_not_found.status_code;
103        response.reason_phrase = STATUS_CODE_REASON_PHRASE.n404_not_found.reason_phrase.to_string();
104
105
106        if FileExt::does_file_exist(NotFoundController::NOT_FOUND_FILEPATH) {
107            let boxed_content_range =
108                Range::get_content_range_of_a_file(NotFoundController::NOT_FOUND_FILEPATH);
109
110            if boxed_content_range.is_ok() {
111                let content_range = boxed_content_range.unwrap();
112                let content_range_list = vec![content_range];
113                response.content_range_list = content_range_list;
114            } else {
115                let error = boxed_content_range.err().unwrap();
116                let mime_type = MimeType::TEXT_HTML.to_string();
117                let content_range = Range::get_content_range(
118                    Vec::from(error.as_bytes()),
119                    mime_type
120                );
121
122                let content_range_list = vec![content_range];
123                response.content_range_list = content_range_list;
124                response.status_code = *STATUS_CODE_REASON_PHRASE.n500_internal_server_error.status_code;
125                response.reason_phrase = STATUS_CODE_REASON_PHRASE.n500_internal_server_error.reason_phrase.to_string();
126            }
127        } else {
128            let not_found_file = include_bytes!("404.html");
129
130            let content_range =
131                Range::get_content_range(not_found_file.to_vec(), MimeType::TEXT_HTML.to_string());
132
133
134            let content_range_list = vec![content_range];
135            response.content_range_list = content_range_list;
136
137        }
138
139        response
140    }
141}
rust_web_server/app/controller/not_found/mod.rs

rust_web_server/app/controller/not_found/
mod.rs
