Adding upstream version 3.7.9.upstream/3.7.9upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 75 insertions, 0 deletions

diff --git a/lib/tls13/encrypted_extensions.c b/lib/tls13/encrypted_extensions.c
new file mode 100644
index 0000000..84c328f
--- /dev/null
+++ b/lib/tls13/encrypted_extensions.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2017 Red Hat, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>
+ *
+ */
+
+#include "gnutls_int.h"
+#include "errors.h"
+#include "hello_ext.h"
+#include "handshake.h"
+#include "mbuffers.h"
+#include "tls13/encrypted_extensions.h"
+
+int _gnutls13_recv_encrypted_extensions(gnutls_session_t session)
+{
+	int ret;
+	gnutls_buffer_st buf;
+
+	ret = _gnutls_recv_handshake(session, GNUTLS_HANDSHAKE_ENCRYPTED_EXTENSIONS, 0, &buf);
+	if (ret < 0)
+		return gnutls_assert_val(ret);
+
+	_gnutls_handshake_log("HSK[%p]: parsing encrypted extensions\n", session);
+	ret = _gnutls_parse_hello_extensions(session, GNUTLS_EXT_FLAG_EE, GNUTLS_EXT_ANY,
+					     buf.data, buf.length);
+	_gnutls_buffer_clear(&buf);
+
+	if (ret < 0)
+		return gnutls_assert_val(ret);
+
+	return 0;
+}
+
+int _gnutls13_send_encrypted_extensions(gnutls_session_t session, unsigned again)
+{
+	int ret;
+	mbuffer_st *bufel = NULL;
+	gnutls_buffer_st buf;
+
+	if (again == 0) {
+		ret = _gnutls_buffer_init_handshake_mbuffer(&buf);
+		if (ret < 0)
+			return gnutls_assert_val(ret);
+
+		ret = _gnutls_gen_hello_extensions(session, &buf, GNUTLS_EXT_FLAG_EE, GNUTLS_EXT_ANY);
+		if (ret < 0) {
+			gnutls_assert();
+			goto cleanup;
+		}
+
+		bufel = _gnutls_buffer_to_mbuffer(&buf);
+	}
+
+	return _gnutls_send_handshake(session, bufel, GNUTLS_HANDSHAKE_ENCRYPTED_EXTENSIONS);
+
+ cleanup:
+	_gnutls_buffer_clear(&buf);
+	return ret;
+}