Move DTLS handshake message handling to its own function.

When a TLSv1.2 handshake message has been built, call a separate function
that can handle the DTLS specific processing rather than including this in
the TLS code.

ok kenjiro@ tb@

1 files changed, 26 insertions, 1 deletions

diff --git a/src/lib/libssl/d1_both.c b/src/lib/libssl/d1_both.c
index 2af307f594..0a0a80dad9 100644
--- a/src/lib/libssl/d1_both.c
+++ b/src/lib/libssl/d1_both.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: d1_both.c,v 1.94 2026/05/16 08:20:41 jsing Exp $ */
+/* $OpenBSD: d1_both.c,v 1.95 2026/06/06 15:22:25 jsing Exp $ */
 /*
  * DTLS implementation written by Nagendra Modadugu
  * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
@@ -1162,3 +1162,28 @@ dtls1_get_message_header(CBS *header, struct hm_header_st *msg_hdr)
 
         return 1;
 }
+
+int
+dtls12_handshake_msg_built(SSL *s)
+{
+        unsigned long len;
+        uint8_t msg_type;
+        CBS cbs;
+
+        CBS_init(&cbs, s->init_buf->data, s->init_num);
+        if (!CBS_get_u8(&cbs, &msg_type))
+                return 0;
+
+        if (s->init_off != 0)
+                return 0;
+        if (s->init_num < DTLS1_HM_HEADER_LENGTH)
+                return 0;
+
+        len = s->init_num - DTLS1_HM_HEADER_LENGTH;
+
+        dtls1_set_message_header(s, msg_type, len, 0, len);
+
+        dtls1_buffer_message(s, 0);
+
+        return 1;
+}