Return error from parsing the encrypted ReqData

Signed-off-by: Luca Fulchir <luca.fulchir@runesauth.com>

src/connection/handshake/dirsync.rs

@@ -212,8 +212,10 @@ impl ReqInner {
         }
     }
     /// parse the cleartext
-    // FIXME: return Result<>
-    pub fn deserialize_as_cleartext(&mut self, raw: &[u8]) {
+    pub fn deserialize_as_cleartext(
+        &mut self,
+        raw: &[u8],
+    ) -> Result<(), Error> {
         let clear = match self {
             ReqInner::CipherText(len) => {
                 assert!(
@@ -222,12 +224,13 @@ impl ReqInner {
                 );
                 match ReqData::deserialize(raw) {
                     Ok(clear) => clear,
-                    Err(_e) => return,
+                    Err(e) => return Err(e),
                 }
             }
-            _ => return,
+            _ => return Err(Error::Parsing),
         };
         *self = ReqInner::ClearText(clear);
+        Ok(())
     }
 }
 

src/connection/handshake/tests.rs

@@ -67,9 +67,11 @@ fn test_handshake_dirsync_req() {
     {
         let enc_start =
             r_a.encrypted_offset() + cipher_send.kind().nonce_len().0;
-        r_a.data.deserialize_as_cleartext(
+        if let Err(e) = r_a.data.deserialize_as_cleartext(
             &bytes[enc_start..(bytes.len() - cipher_send.kind().tag_len().0)],
-        );
+        ) {
+            assert!(false, "DirSync Req Inner serialize: {}", e.to_string());
+        }
     };
 
     assert!(

src/inner/mod.rs

@@ -184,7 +184,11 @@ impl HandshakeTracker {
                         &mut handshake_raw[req.encrypted_offset()..],
                     ) {
                         Ok(cleartext) => {
-                            req.data.deserialize_as_cleartext(cleartext)
+                            if let Err(e) =
+                                req.data.deserialize_as_cleartext(cleartext)
+                            {
+                                return Err(e.into());
+                            }
                         }
                         Err(e) => {
                             return Err(handshake::Error::Key(e).into());