Add support for sending QUIC transport parameters

This is the start of adding the boringssl API for QUIC support,
and the TLS extensions necessary to send and receive QUIC transport
data.

Inspired by boringssl's https://boringssl-review.googlesource.com/24464

ok jsing@ tb@

1 files changed, 29 insertions, 1 deletions

diff --git a/src/lib/libssl/ssl_lib.c b/src/lib/libssl/ssl_lib.c
index be01f771e0..b959d3428f 100644
--- a/src/lib/libssl/ssl_lib.c
+++ b/src/lib/libssl/ssl_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_lib.c,v 1.292 2022/06/29 08:39:08 tb Exp $ */
+/* $OpenBSD: ssl_lib.c,v 1.293 2022/06/29 17:39:20 beck Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -573,6 +573,8 @@ SSL_free(SSL *s)
 
         free(s->internal->alpn_client_proto_list);
 
+        free(s->internal->quic_transport_params);
+
 #ifndef OPENSSL_NO_SRTP
         sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles);
 #endif
@@ -3312,3 +3314,29 @@ OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num)
         return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER),
             ssl_cipher_id_cmp_BSEARCH_CMP_FN);
 }
+
+int
+SSL_set_quic_transport_params(SSL *ssl, const uint8_t *params,
+    size_t params_len)
+{
+        freezero(ssl->internal->quic_transport_params,
+            ssl->internal->quic_transport_params_len);
+        ssl->internal->quic_transport_params = NULL;
+        ssl->internal->quic_transport_params_len = 0;
+
+        if ((ssl->internal->quic_transport_params = malloc(params_len)) == NULL)
+                return 0;
+
+        memcpy(ssl->internal->quic_transport_params, params, params_len);
+        ssl->internal->quic_transport_params_len = params_len;
+
+        return 1;
+}
+
+void
+SSL_get_peer_quic_transport_params(const SSL *ssl, const uint8_t **out_params,
+    size_t *out_params_len)
+{
+        *out_params = ssl->s3->peer_quic_transport_params;
+        *out_params_len = ssl->s3->peer_quic_transport_params_len;
+}