Merge branch 'access-token'

Merges in the access token fixes into main.

src/lib.rs

@@ -1,20 +1,31 @@
 use std::error::Error;
 use std::fs::read_to_string;
 
+use oauth2::basic::BasicClient;
+use oauth2::reqwest::http_client;
+use oauth2::AccessToken;
+use oauth2::AuthUrl;
+use oauth2::ClientId;
+use oauth2::ClientSecret;
+use oauth2::TokenResponse;
+use oauth2::TokenUrl;
+
+mod types;
+use types::ClientAuth;
+
 pub fn run() -> Result<(), Box<dyn Error>> {
     let client_auth = read_client_auth()?;
 
-    println!("Client ID: {}", client_auth.client_id);
-    println!("Client Secret: {}", client_auth.client_secret);
+    println!("Client ID: {}", client_auth.id);
+    println!("Client Secret: {}", client_auth.secret);
+
+    let access_token = get_api_token(client_auth.id, client_auth.secret)?;
+
+    println!("Access Token: {access_token:#?}");
 
     Ok(())
 }
 
-struct ClientAuth {
-    client_id: String,
-    client_secret: String,
-}
-
 fn read_client_auth() -> Result<ClientAuth, Box<dyn Error>> {
     let mut id = String::new();
     let mut secret = String::new();
@@ -29,8 +40,22 @@ fn read_client_auth() -> Result<ClientAuth, Box<dyn Error>> {
         }
     }
 
-    Ok(ClientAuth {
-        client_id: id,
-        client_secret: secret,
-    })
+    Ok(ClientAuth { id, secret })
+}
+
+fn get_api_token(client_id: String, client_secret: String) -> Result<AccessToken, Box<dyn Error>> {
+    let client = BasicClient::new(
+        ClientId::new(client_id),
+        Some(ClientSecret::new(client_secret)),
+        AuthUrl::new("https://api.tailscale.com/api/v2/oauth/token".to_string())?,
+        Some(TokenUrl::new(
+            "https://api.tailscale.com/api/v2/oauth/token".to_string(),
+        )?),
+    );
+
+    let token_result = client.exchange_client_credentials().request(http_client)?;
+
+    let access_token = token_result.access_token().to_owned();
+
+    Ok(access_token)
 }

src/types.rs

@@ -0,0 +1,4 @@
+pub struct ClientAuth {
+    pub id: String,
+    pub secret: String,
+}