aex 0.1.6

A web server for rust.
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

use crate::{
    exe,
    http::{
        meta::HttpMetadata, protocol::header::HeaderKey, protocol::status::StatusCode,
        types::Executor,
    },
};
use std::sync::Arc;

#[derive(Clone, Debug)]
pub struct CorsConfig {
    allow_origin_all: bool,
    allow_methods: Vec<String>,
    allow_headers: Vec<String>,
    allow_credentials: bool,
    max_age: Option<usize>,
}

impl Default for CorsConfig {
    fn default() -> Self {
        Self {
            allow_origin_all: true,
            allow_methods: vec![
                "GET".to_string(),
                "POST".to_string(),
                "PUT".to_string(),
                "DELETE".to_string(),
                "PATCH".to_string(),
                "OPTIONS".to_string(),
            ],
            allow_headers: vec![
                "Content-Type".to_string(),
                "Authorization".to_string(),
                "X-Requested-With".to_string(),
            ],
            allow_credentials: true,
            max_age: Some(86400),
        }
    }
}

impl CorsConfig {
    pub fn new() -> Self {
        Self::default()
    }

    pub fn allow_origin_all(mut self, allow: bool) -> Self {
        self.allow_origin_all = allow;
        self
    }

    pub fn allow_methods(mut self, methods: Vec<&str>) -> Self {
        self.allow_methods = methods.into_iter().map(|s| s.to_uppercase()).collect();
        self
    }

    pub fn allow_headers(mut self, headers: Vec<&str>) -> Self {
        self.allow_headers = headers.into_iter().map(|s| s.to_string()).collect();
        self
    }

    pub fn allow_credentials(mut self, allow: bool) -> Self {
        self.allow_credentials = allow;
        self
    }

    pub fn max_age(mut self, seconds: usize) -> Self {
        self.max_age = Some(seconds);
        self
    }

    pub fn build(self) -> Arc<Executor> {
        let config = Arc::new(self);
        exe!(
            move |ctx, config| {
                let mut is_options = false;

                if let Some(meta) = ctx.local.get_mut::<HttpMetadata>() {
                    let origin = meta.headers.get(&HeaderKey::Origin).cloned();

                    if origin.is_some() || config.allow_origin_all {
                        let origin_value = origin.as_deref().unwrap_or("*");
                        meta.headers.insert(
                            HeaderKey::AccessControlAllowOrigin,
                            origin_value.to_string(),
                        );
                    }

                    meta.headers.insert(
                        HeaderKey::AccessControlAllowMethods,
                        config.allow_methods.join(", "),
                    );
                    meta.headers.insert(
                        HeaderKey::AccessControlAllowHeaders,
                        config.allow_headers.join(", "),
                    );

                    if config.allow_credentials {
                        meta.headers
                            .insert(HeaderKey::AccessControlAllowCredentials, "true".to_string());
                    }

                    if let Some(max_age) = config.max_age {
                        meta.headers
                            .insert(HeaderKey::AccessControlMaxAge, max_age.to_string());
                    }

                    if meta.method.to_str() == "OPTIONS" {
                        is_options = true;
                    }
                }

                if is_options {
                    ctx.status(StatusCode::Ok).send("", None);
                    return false;
                }

                true
            },
            |ctx| { config.clone() }
        )
    }
}

#[macro_export]
macro_rules! cors {
    () => {
        $crate::http::middlewares::cors::CorsConfig::new().build()
    };
    ($($t:tt)*) => {
        $crate::http::middlewares::cors::CorsConfig::new()$($t)*.build()
    };
}