Add DTLSv1.2 methods.

These are currently guarded by LIBRESSL_HAS_DTLS1_2 and LIBRESSL_INTERNAL.

ok tb@

2 files changed, 159 insertions, 3 deletions

diff --git a/src/lib/libssl/ssl.h b/src/lib/libssl/ssl.h
index ec9544acc5..e7ff6cec2a 100644
--- a/src/lib/libssl/ssl.h
+++ b/src/lib/libssl/ssl.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl.h,v 1.181 2021/02/20 08:11:57 jsing Exp $ */
+/* $OpenBSD: ssl.h,v 1.182 2021/02/20 08:33:17 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -1528,6 +1528,12 @@ const SSL_METHOD *DTLSv1_method(void);		/* DTLSv1.0 */
 const SSL_METHOD *DTLSv1_server_method(void);   /* DTLSv1.0 */
 const SSL_METHOD *DTLSv1_client_method(void);   /* DTLSv1.0 */
 
+#if defined(LIBRESSL_HAS_DTLS1_2) || defined(LIBRESSL_INTERNAL)
+const SSL_METHOD *DTLSv1_2_method(void);        /* DTLSv1.2 */
+const SSL_METHOD *DTLSv1_2_server_method(void); /* DTLSv1.2 */
+const SSL_METHOD *DTLSv1_2_client_method(void); /* DTLSv1.2 */
+#endif
+
 const SSL_METHOD *DTLS_method(void);            /* DTLS v1.0 or later */
 const SSL_METHOD *DTLS_server_method(void);     /* DTLS v1.0 or later */
 const SSL_METHOD *DTLS_client_method(void);     /* DTLS v1.0 or later */
diff --git a/src/lib/libssl/ssl_methods.c b/src/lib/libssl/ssl_methods.c
index ea67403d5d..ae532ba16d 100644
--- a/src/lib/libssl/ssl_methods.c
+++ b/src/lib/libssl/ssl_methods.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_methods.c,v 1.21 2020/12/01 07:46:02 tb Exp $ */
+/* $OpenBSD: ssl_methods.c,v 1.22 2021/02/20 08:33:17 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -59,6 +59,66 @@
 #include "ssl_locl.h"
 #include "tls13_internal.h"
 
+#ifdef LIBRESSL_HAS_DTLS1_2
+static const SSL_METHOD_INTERNAL DTLS_method_internal_data = {
+        .dtls = 1,
+        .server = 1,
+        .version = DTLS1_2_VERSION,
+        .min_version = DTLS1_VERSION,
+        .max_version = DTLS1_2_VERSION,
+        .ssl_new = dtls1_new,
+        .ssl_clear = dtls1_clear,
+        .ssl_free = dtls1_free,
+        .ssl_accept = ssl3_accept,
+        .ssl_connect = ssl3_connect,
+        .ssl_shutdown = ssl3_shutdown,
+        .ssl_renegotiate = ssl3_renegotiate,
+        .ssl_renegotiate_check = ssl3_renegotiate_check,
+        .ssl_pending = ssl3_pending,
+        .ssl_read_bytes = dtls1_read_bytes,
+        .ssl_write_bytes = dtls1_write_app_data_bytes,
+        .enc_flags = TLSV1_2_ENC_FLAGS,
+};
+
+static const SSL_METHOD DTLS_method_data = {
+        .ssl_dispatch_alert = dtls1_dispatch_alert,
+        .num_ciphers = ssl3_num_ciphers,
+        .get_cipher = dtls1_get_cipher,
+        .get_cipher_by_char = ssl3_get_cipher_by_char,
+        .put_cipher_by_char = ssl3_put_cipher_by_char,
+        .internal = &DTLS_method_internal_data,
+};
+
+static const SSL_METHOD_INTERNAL DTLS_client_method_internal_data = {
+        .dtls = 1,
+        .server = 0,
+        .version = DTLS1_2_VERSION,
+        .min_version = DTLS1_VERSION,
+        .max_version = DTLS1_2_VERSION,
+        .ssl_new = dtls1_new,
+        .ssl_clear = dtls1_clear,
+        .ssl_free = dtls1_free,
+        .ssl_accept = ssl_undefined_function,
+        .ssl_connect = ssl3_connect,
+        .ssl_shutdown = ssl3_shutdown,
+        .ssl_renegotiate = ssl3_renegotiate,
+        .ssl_renegotiate_check = ssl3_renegotiate_check,
+        .ssl_pending = ssl3_pending,
+        .ssl_read_bytes = dtls1_read_bytes,
+        .ssl_write_bytes = dtls1_write_app_data_bytes,
+        .enc_flags = TLSV1_2_ENC_FLAGS,
+};
+
+static const SSL_METHOD DTLS_client_method_data = {
+        .ssl_dispatch_alert = dtls1_dispatch_alert,
+        .num_ciphers = ssl3_num_ciphers,
+        .get_cipher = dtls1_get_cipher,
+        .get_cipher_by_char = ssl3_get_cipher_by_char,
+        .put_cipher_by_char = ssl3_put_cipher_by_char,
+        .internal = &DTLS_client_method_internal_data,
+};
+#endif
+
 static const SSL_METHOD_INTERNAL DTLSv1_method_internal_data = {
         .dtls = 1,
         .server = 1,
@@ -117,6 +177,64 @@ static const SSL_METHOD DTLSv1_client_method_data = {
         .internal = &DTLSv1_client_method_internal_data,
 };
 
+static const SSL_METHOD_INTERNAL DTLSv1_2_method_internal_data = {
+        .dtls = 1,
+        .server = 1,
+        .version = DTLS1_2_VERSION,
+        .min_version = DTLS1_2_VERSION,
+        .max_version = DTLS1_2_VERSION,
+        .ssl_new = dtls1_new,
+        .ssl_clear = dtls1_clear,
+        .ssl_free = dtls1_free,
+        .ssl_accept = ssl3_accept,
+        .ssl_connect = ssl3_connect,
+        .ssl_shutdown = ssl3_shutdown,
+        .ssl_renegotiate = ssl3_renegotiate,
+        .ssl_renegotiate_check = ssl3_renegotiate_check,
+        .ssl_pending = ssl3_pending,
+        .ssl_read_bytes = dtls1_read_bytes,
+        .ssl_write_bytes = dtls1_write_app_data_bytes,
+        .enc_flags = TLSV1_2_ENC_FLAGS,
+};
+
+static const SSL_METHOD DTLSv1_2_method_data = {
+        .ssl_dispatch_alert = dtls1_dispatch_alert,
+        .num_ciphers = ssl3_num_ciphers,
+        .get_cipher = dtls1_get_cipher,
+        .get_cipher_by_char = ssl3_get_cipher_by_char,
+        .put_cipher_by_char = ssl3_put_cipher_by_char,
+        .internal = &DTLSv1_2_method_internal_data,
+};
+
+static const SSL_METHOD_INTERNAL DTLSv1_2_client_method_internal_data = {
+        .dtls = 1,
+        .server = 0,
+        .version = DTLS1_2_VERSION,
+        .min_version = DTLS1_2_VERSION,
+        .max_version = DTLS1_2_VERSION,
+        .ssl_new = dtls1_new,
+        .ssl_clear = dtls1_clear,
+        .ssl_free = dtls1_free,
+        .ssl_accept = ssl_undefined_function,
+        .ssl_connect = ssl3_connect,
+        .ssl_shutdown = ssl3_shutdown,
+        .ssl_renegotiate = ssl3_renegotiate,
+        .ssl_renegotiate_check = ssl3_renegotiate_check,
+        .ssl_pending = ssl3_pending,
+        .ssl_read_bytes = dtls1_read_bytes,
+        .ssl_write_bytes = dtls1_write_app_data_bytes,
+        .enc_flags = TLSV1_2_ENC_FLAGS,
+};
+
+static const SSL_METHOD DTLSv1_2_client_method_data = {
+        .ssl_dispatch_alert = dtls1_dispatch_alert,
+        .num_ciphers = ssl3_num_ciphers,
+        .get_cipher = dtls1_get_cipher,
+        .get_cipher_by_char = ssl3_get_cipher_by_char,
+        .put_cipher_by_char = ssl3_put_cipher_by_char,
+        .internal = &DTLSv1_2_client_method_internal_data,
+};
+
 const SSL_METHOD *
 DTLSv1_client_method(void)
 {
@@ -136,21 +254,51 @@ DTLSv1_server_method(void)
 }
 
 const SSL_METHOD *
+DTLSv1_2_client_method(void)
+{
+        return &DTLSv1_2_client_method_data;
+}
+
+const SSL_METHOD *
+DTLSv1_2_method(void)
+{
+        return &DTLSv1_2_method_data;
+}
+
+const SSL_METHOD *
+DTLSv1_2_server_method(void)
+{
+        return &DTLSv1_2_method_data;
+}
+
+const SSL_METHOD *
 DTLS_client_method(void)
 {
+#ifdef LIBRESSL_HAS_DTLS1_2
+        return &DTLS_client_method_data;
+#else
         return DTLSv1_client_method();
+#endif
 }
 
 const SSL_METHOD *
 DTLS_method(void)
 {
+#ifdef LIBRESSL_HAS_DTLS1_2
+        return &DTLS_method_data;
+#else
         return DTLSv1_method();
+#endif
 }
 
 const SSL_METHOD *
 DTLS_server_method(void)
 {
-        return DTLSv1_method();
+#ifdef LIBRESSL_HAS_DTLS1_2
+        return &DTLS_method_data;
+#else
+        return DTLSv1_server_method();
+#endif
 }
 
 #if defined(LIBRESSL_HAS_TLS1_3_CLIENT) && defined(LIBRESSL_HAS_TLS1_3_SERVER)
@@ -566,6 +714,8 @@ ssl_get_method(uint16_t version)
                 return (TLSv1_method());
         if (version == DTLS1_VERSION)
                 return (DTLSv1_method());
+        if (version == DTLS1_2_VERSION)
+                return (DTLSv1_2_method());
 
         return (NULL);
 }