Structural changes, move auth to separate module .

src/auth/basic.rs

@@ -0,0 +1,24 @@
+use crate::auth::types::AuthValidator;
+use base64::engine::general_purpose::STANDARD;
+use base64::Engine;
+use pingora_proxy::Session;
+use subtle::ConstantTimeEq;
+
+pub struct BasicAuth<'a>(pub(crate) &'a str);
+#[async_trait::async_trait]
+impl AuthValidator for BasicAuth<'_> {
+    async fn validate(&self, session: &mut Session) -> bool {
+        if let Some(header) = session.get_header("authorization") {
+            if let Ok(h) = header.to_str() {
+                if let Some((_, val)) = h.split_once(' ') {
+                    if let Ok(decoded) = STANDARD.decode(val) {
+                        if decoded.as_slice().ct_eq(self.0.as_bytes()).into() {
+                            return true;
+                        }
+                    }
+                }
+            }
+        }
+        false
+    }
+}