tiny_proxy/auth/
validator.rs

1//! Token validation module for authentication
2//!
3//! This module provides functionality for validating tokens
4//! against external authentication services.
5
6use hyper::Request;
7
8/// Validate an authentication token from a request
9///
10/// This function extracts the token from the request headers
11/// and validates it against an external authentication service.
12///
13/// # Arguments
14///
15/// * `req` - The incoming HTTP request containing the token
16/// * `validator_url` - URL of the external token validation service
17///
18/// # Returns
19///
20/// * `Ok(true)` - Token is valid
21/// * `Ok(false)` - Token is invalid
22/// * `Err(...)` - Error occurred during validation
23///
24/// # Example
25///
26/// ```no_run
27/// use tiny_proxy::auth::validator::validate_token;
28/// use hyper::Request;
29/// use bytes::Bytes;
30/// use http_body_util::Empty;
31///
32/// # #[tokio::main]
33/// # async fn main() -> anyhow::Result<()> {
34/// # let req = Request::builder().body(Empty::<Bytes>::new()).unwrap();
35/// let is_valid = validate_token(&req, "http://auth-service:8080/validate").await?;
36/// # Ok(())
37/// # }
38/// ```
39pub async fn validate_token<B>(req: &Request<B>, validator_url: &str) -> anyhow::Result<bool> {
40    // Extract token from Authorization header
41    let auth_header = req
42        .headers()
43        .get("Authorization")
44        .and_then(|h| h.to_str().ok())
45        .ok_or_else(|| anyhow::anyhow!("Missing Authorization header"))?;
46
47    // TODO: Implement actual token validation against external service
48    // This is a placeholder implementation
49
50    // In a real implementation, you would:
51    // 1. Send a request to the validator_url with the token
52    // 2. Wait for the response
53    // 3. Return true/false based on the response
54
55    tracing::debug!("Validating token against {}", validator_url);
56    tracing::debug!("Token: {}", auth_header);
57
58    // Placeholder: always return true for now
59    Ok(true)
60}
61
62/// Validate token with custom header name
63///
64/// Similar to `validate_token` but allows specifying a custom header
65/// name for the token (e.g., "X-Auth-Token" instead of "Authorization").
66///
67/// # Arguments
68///
69/// * `req` - The incoming HTTP request
70/// * `validator_url` - URL of the external token validation service
71/// * `header_name` - Name of the header containing the token
72///
73/// # Returns
74///
75/// * `Ok(true)` - Token is valid
76/// * `Ok(false)` - Token is invalid
77/// * `Err(...)` - Error occurred during validation
78pub async fn validate_token_with_header<B>(
79    req: &Request<B>,
80    validator_url: &str,
81    header_name: &str,
82) -> anyhow::Result<bool> {
83    // Extract token from custom header
84    let auth_header = req
85        .headers()
86        .get(header_name)
87        .and_then(|h| h.to_str().ok())
88        .ok_or_else(|| anyhow::anyhow!("Missing {} header", header_name))?;
89
90    tracing::debug!(
91        "Validating token in {} header against {}",
92        header_name,
93        validator_url
94    );
95    tracing::debug!("Token: {}", auth_header);
96
97    // Placeholder: always return true for now
98    Ok(true)
99}
100
101#[cfg(test)]
102mod tests {
103    use bytes::Bytes;
104    use http_body_util::Empty;
105    use hyper::Request;
106
107    #[test]
108    fn test_validate_token_missing_header() {
109        let _req = Request::builder().body(Empty::<Bytes>::new()).unwrap();
110
111        // This would fail in a real async test, but we're just testing the logic
112        let _validator_url = "http://auth-service:8080/validate";
113
114        // Note: This test demonstrates the function signature
115        // In a real test, you'd use a tokio::test and mock the HTTP client
116    }
117
118    #[test]
119    fn test_validate_token_with_custom_header() {
120        let _req = Request::builder()
121            .header("X-Auth-Token", "test-token-123")
122            .body(Empty::<Bytes>::new())
123            .unwrap();
124
125        let _validator_url = "http://auth-service:8080/validate";
126        let _header_name = "X-Auth-Token";
127
128        // Note: This test demonstrates the function signature
129        // In a real test, you'd use a tokio::test and mock the HTTP client
130    }
131}
tiny_proxy/auth/validator.rs

tiny_proxy/auth/
validator.rs
