just_auth/
twitter.rs

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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
//! https://developer.x.com/en/docs/authentication/oauth-2-0/authorization-code
//! https://developer.x.com/en/docs/authentication/oauth-2-0/user-access-token
//! https://developer.x.com/en/docs/x-api/users/lookup/api-reference/get-users-me
use crate::error::Result;
use crate::{AuthAction, AuthConfig, AuthUrlProvider};
use async_trait::async_trait;
use serde::{Deserialize, Serialize};
use serde_with::{
    formats::{CommaSeparator, SpaceSeparator},
    serde_as, StringWithSeparator,
};

pub struct AuthorizationServer {
    config: AuthConfig,
}

impl AuthUrlProvider for AuthorizationServer {
    type AuthRequest = AuthRequest;
    type TokenRequest = GetTokenRequest;
    type UserInfoRequest = GetUserInfoRequest;

    fn authorize_url(request: Self::AuthRequest) -> Result<String> {
        let query = serde_urlencoded::to_string(request)?;
        Ok(format!(
            "https://twitter.com/i/oauth2/authorize?response_type=code&{query}"
        ))
    }

    fn access_token_url(request: Self::TokenRequest) -> Result<String> {
        let query = serde_urlencoded::to_string(request)?;
        Ok(format!(
            "https://api.x.com/2/oauth2/token?grant_type=authorization_code&{query}"
        ))
    }

    fn user_info_url(_request: Self::UserInfoRequest) -> Result<String> {
        Ok(format!("https://api.x.com/2/users/me"))
    }
}

#[async_trait]
impl AuthAction for AuthorizationServer {
    type AuthCallback = AuthCallback;
    type AuthToken = TokenResponse;
    type AuthUser = UserInfoResponse;

    async fn authorize<S: Into<String> + Send>(&self, state: S) -> Result<String> {
        let AuthConfig {
            client_id,
            redirect_uri,
            scope,
            ..
        } = &self.config;
        Self::authorize_url(AuthRequest {
            client_id: client_id.to_string(),
            redirect_uri: redirect_uri.to_string(),
            state: state.into(),
            scope: scope
                .clone()
                .or_else(|| Some(vec!["tweet.read".into(), "users.read".into()]))
                .expect("scope is empty"),
            ..Default::default()
        })
    }

    async fn get_access_token(&self, callback: Self::AuthCallback) -> Result<Self::AuthToken> {
        let AuthConfig {
            client_id,
            redirect_uri,
            ..
        } = &self.config;
        let access_token_url = Self::access_token_url(GetTokenRequest {
            client_id: client_id.to_string(),
            code: callback.code,
            redirect_uri: redirect_uri.to_string(),
            code_verifier: "aaa".to_string(),
        })?;
        Ok(reqwest::get(access_token_url).await?.json().await?)
    }

    async fn get_user_info(&self, token: Self::AuthToken) -> Result<Self::AuthUser> {
        let user_info_url = Self::user_info_url(GetUserInfoRequest {
            user_fields: [
                "created_at",
                "description",
                "entities",
                "id",
                "location",
                "most_recent_tweet_id",
                "name",
                "pinned_tweet_id",
                "profile_image_url",
                "protected",
                "public_metrics",
                "url",
                "username",
                "verified",
                "verified_type",
                "withheld",
            ]
            .map(|s| s.to_string())
            .to_vec(),
            ..Default::default()
        })?;
        Ok(reqwest::Client::default()
            .get(user_info_url)
            .bearer_auth(token.access_token)
            .send()
            .await?
            .json()
            .await?)
    }
}

#[serde_as]
#[derive(Debug, Default, Serialize, Deserialize)]
pub struct AuthRequest {
    client_id: String,
    redirect_uri: String,
    #[serde_as(as = "StringWithSeparator::<SpaceSeparator, String>")]
    scope: Vec<String>,
    state: String,
    /// https://www.oauth.com/oauth2-servers/pkce/authorization-request/
    code_challenge: Option<String>,
    code_challenge_method: Option<String>,
}

#[derive(Debug, Serialize, Deserialize)]
pub struct AuthCallback {
    code: String,
    state: String,
}

#[derive(Debug, Serialize)]
pub struct GetTokenRequest {
    client_id: String,
    code: String,
    redirect_uri: String,
    code_verifier: String,
}

#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct TokenResponse {
    pub access_token: String,
    pub scope: String,
    pub token_type: String,
}

#[serde_as]
#[derive(Debug, Default, Serialize, Deserialize)]
pub struct GetUserInfoRequest {
    expansions: Option<String>,
    #[serde(rename = "tweet.fields")]
    #[serde_as(as = "StringWithSeparator::<CommaSeparator, String>")]
    tweet_fields: Vec<String>,
    #[serde(rename = "user.fields")]
    #[serde_as(as = "StringWithSeparator::<CommaSeparator, String>")]
    user_fields: Vec<String>,
}

#[derive(Default, Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct UserInfoResponse {
    pub openid: String,
    pub unionid: String,
    pub userid: Option<u32>,
    pub securemobile: Option<u32>,
    pub username: Option<String>,
    pub portrait: Option<String>,
    pub userdetail: Option<String>,
    pub birthday: Option<String>,
    pub marriage: Option<String>,
    pub sex: Option<String>,
    pub blood: Option<String>,
    pub is_bind_mobile: Option<String>,
    pub is_realname: Option<String>,
}