handshake: add functions to read/write handshake messages directlytmp-record-write-callback

This adds a couple of functions, gnutls_handshake_set_read_function()
and gnutls_handshake_write(), to allow QUIC implementations to
directly interact with the TLS state machine.

Signed-off-by: Daiki Ueno <dueno@redhat.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/state.c b/lib/state.c
index f33cd5a8bc..a26c1c7a2f 100644
--- a/lib/state.c
+++ b/lib/state.c
@@ -1419,6 +1419,23 @@ gnutls_handshake_set_hook_function(gnutls_session_t session,
 }
 
 /**
+ * gnutls_handshake_set_read_function:
+ * @session: is #gnutls_session_t type
+ * @func: is the function to be called
+ *
+ * This function will set a callback to be called when a handshake
+ * message is being sent.
+ *
+ * Since: 3.6.13
+ */
+void
+gnutls_handshake_set_read_function(gnutls_session_t session,
+				   gnutls_handshake_read_func func)
+{
+	session->internals.read_func = func;
+}
+
+/**
  * gnutls_record_get_state:
  * @session: is a #gnutls_session_t type
  * @read: if non-zero the read parameters are returned, otherwise the write