initial commit

common/src/protocol/interceptors/application_data_interceptor.rs

@@ -0,0 +1,33 @@
+use crate::{
+    protocol::interceptors::{
+        error_interceptor::interceptor_error::InterceptorError, interceptor::Interceptor,
+    },
+    tlseng::tls::ApplicationData,
+};
+
+impl Interceptor for ApplicationData {
+    type Error = InterceptorError;
+
+    fn can_handle(bytes: &bytes::BytesMut) -> bool {
+        // Application Data не может быть пустым по спецификации (хотя бы 1 байт)
+        !bytes.is_empty()
+    }
+
+    fn intercept(bytes: &mut bytes::BytesMut) -> Result<Option<Self>, Self::Error>
+    where
+        Self: Sized,
+    {
+        let len = bytes.len();
+
+        if len == 0 {
+            return Ok(None);
+        }
+
+        let payload = bytes.split_to(len).freeze();
+
+        Ok(Some(Self {
+            length: len,
+            payload,
+        }))
+    }
+}