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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158

use std::collections::HashMap;
use std::fmt::Debug;

use async_trait::async_trait;
use dyn_clone::DynClone;

use reqwest::header::HeaderMap;
use reqwest::tls::Version;
use url::{ParseError, Url};
use uuid::Uuid;

use graph_error::{AuthExecutionResult, IdentityResult};

use crate::identity::credentials::app_config::AppConfig;
use crate::identity::{
    tracing_targets::CREDENTIAL_EXECUTOR, Authority, AuthorizationRequestParts, AzureCloudInstance,
};

dyn_clone::clone_trait_object!(TokenCredentialExecutor);

#[async_trait]
pub trait TokenCredentialExecutor: DynClone + Debug {
    fn uri(&mut self) -> IdentityResult<Url> {
        Ok(self.azure_cloud_instance().token_uri(&self.authority())?)
    }

    fn form_urlencode(&mut self) -> IdentityResult<HashMap<String, String>>;

    fn request_parts(&mut self) -> IdentityResult<AuthorizationRequestParts> {
        let uri = self.uri()?;
        let form = self.form_urlencode()?;
        let basic_auth = self.basic_auth();
        let extra_headers = self.extra_header_parameters();
        let extra_query_params = self.extra_query_parameters();

        let mut auth_request = AuthorizationRequestParts::new(uri, form, basic_auth);
        auth_request.with_extra_headers(extra_headers);
        auth_request.with_extra_query_parameters(extra_query_params);

        Ok(auth_request)
    }

    fn build_request(&mut self) -> AuthExecutionResult<reqwest::blocking::RequestBuilder> {
        let http_client = reqwest::blocking::ClientBuilder::new()
            .min_tls_version(Version::TLS_1_2)
            .https_only(true)
            .build()?;

        let auth_request = self.request_parts()?;
        let basic_auth = auth_request.basic_auth;

        if let Some((client_identifier, secret)) = basic_auth {
            let request_builder = http_client
                .post(auth_request.uri)
                .basic_auth(client_identifier, Some(secret))
                .headers(auth_request.headers)
                .form(&auth_request.form_urlencoded);

            tracing::debug!(
                 target: CREDENTIAL_EXECUTOR,
                "authorization request constructed"
            );
            Ok(request_builder)
        } else {
            let request_builder = http_client
                .post(auth_request.uri)
                .headers(auth_request.headers)
                .form(&auth_request.form_urlencoded);

            tracing::debug!(
                 target: CREDENTIAL_EXECUTOR,
                "authorization request constructed"
            );
            Ok(request_builder)
        }
    }

    fn build_request_async(&mut self) -> AuthExecutionResult<reqwest::RequestBuilder> {
        let http_client = reqwest::ClientBuilder::new()
            .min_tls_version(Version::TLS_1_2)
            .https_only(true)
            .build()?;

        let auth_request = self.request_parts()?;
        let basic_auth = auth_request.basic_auth;

        if let Some((client_identifier, secret)) = basic_auth {
            let request_builder = http_client
                .post(auth_request.uri)
                .basic_auth(client_identifier, Some(secret))
                .headers(auth_request.headers)
                .form(&auth_request.form_urlencoded);

            tracing::debug!(
                target: CREDENTIAL_EXECUTOR,
                "authorization request constructed"
            );
            Ok(request_builder)
        } else {
            let request_builder = http_client
                .post(auth_request.uri)
                .headers(auth_request.headers)
                .form(&auth_request.form_urlencoded);

            tracing::debug!(
                target: CREDENTIAL_EXECUTOR,
                "authorization request constructed"
            );
            Ok(request_builder)
        }
    }

    fn client_id(&self) -> &Uuid {
        &self.app_config().client_id
    }

    fn authority(&self) -> Authority {
        self.app_config().authority.clone()
    }

    fn azure_cloud_instance(&self) -> AzureCloudInstance {
        self.app_config().azure_cloud_instance
    }

    fn basic_auth(&self) -> Option<(String, String)> {
        None
    }

    fn app_config(&self) -> &AppConfig;

    fn extra_header_parameters(&self) -> &HeaderMap {
        &self.app_config().extra_header_parameters
    }

    fn issuer(&self) -> Result<Url, ParseError> {
        self.azure_cloud_instance().issuer(&self.authority())
    }

    fn extra_query_parameters(&self) -> &HashMap<String, String> {
        &self.app_config().extra_query_parameters
    }

    fn execute(&mut self) -> AuthExecutionResult<reqwest::blocking::Response> {
        let request_builder = self.build_request()?;
        let response = request_builder.send()?;
        let status = response.status();
        tracing::debug!(target: CREDENTIAL_EXECUTOR, "authorization response received; status={status:#?}");
        Ok(response)
    }

    async fn execute_async(&mut self) -> AuthExecutionResult<reqwest::Response> {
        let request_builder = self.build_request_async()?;
        let response = request_builder.send().await?;
        let status = response.status();
        tracing::debug!(target: CREDENTIAL_EXECUTOR, "authorization response received; status={status:#?}");
        Ok(response)
    }
}