Clean up handshake message start/finish functions.

Now that all handshake messages are created using CBB, remove the non-CBB
ssl3_handshake_msg_start()/ssl3_handshake_msg_finish() functions. Rename
the CBB variants by dropping the _cbb suffix.

ok bcook@ inoguchi@ tb@

6 files changed, 38 insertions, 76 deletions

diff --git a/lib/libssl/d1_srvr.c b/lib/libssl/d1_srvr.c
index 3de0a72f27a..42175197834 100644
--- a/lib/libssl/d1_srvr.c
+++ b/lib/libssl/d1_srvr.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: d1_srvr.c,v 1.92 2018/04/07 17:02:34 jsing Exp $ */
+/* $OpenBSD: d1_srvr.c,v 1.93 2018/08/24 17:30:32 jsing Exp $ */
 /*
  * DTLS implementation written by Nagendra Modadugu
  * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
@@ -185,7 +185,7 @@ dtls1_send_hello_verify_request(SSL *s)
 			return 0;
 		}
 
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &verify,
+		if (!ssl3_handshake_msg_start(s, &cbb, &verify,
 		    DTLS1_MT_HELLO_VERIFY_REQUEST))
 			goto err;
 		if (!CBB_add_u16(&verify, s->version))
@@ -194,7 +194,7 @@ dtls1_send_hello_verify_request(SSL *s)
 			goto err;
 		if (!CBB_add_bytes(&cookie, D1I(s)->cookie, D1I(s)->cookie_len))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B;
diff --git a/lib/libssl/s3_lib.c b/lib/libssl/s3_lib.c
index b3162ff657e..1d8eff9fb6f 100644
--- a/lib/libssl/s3_lib.c
+++ b/lib/libssl/s3_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: s3_lib.c,v 1.167 2018/06/02 16:29:01 jsing Exp $ */
+/* $OpenBSD: s3_lib.c,v 1.168 2018/08/24 17:30:32 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -1397,44 +1397,8 @@ ssl3_handshake_msg_hdr_len(SSL *s)
             SSL3_HM_HEADER_LENGTH);
 }
 
-unsigned char *
-ssl3_handshake_msg_start(SSL *s, uint8_t msg_type)
-{
-	unsigned char *d, *p;
-
-	d = p = (unsigned char *)s->internal->init_buf->data;
-
-	/* Handshake message type and length. */
-	*(p++) = msg_type;
-	l2n3(0, p);
-
-	return (d + ssl3_handshake_msg_hdr_len(s));
-}
-
-void
-ssl3_handshake_msg_finish(SSL *s, unsigned int len)
-{
-	unsigned char *p;
-	uint8_t msg_type;
-
-	p = (unsigned char *)s->internal->init_buf->data;
-
-	/* Handshake message length. */
-	msg_type = *(p++);
-	l2n3(len, p);
-
-	s->internal->init_num = ssl3_handshake_msg_hdr_len(s) + (int)len;
-	s->internal->init_off = 0;
-
-	if (SSL_IS_DTLS(s)) {
-		dtls1_set_message_header(s, msg_type, len, 0, len);
-		dtls1_buffer_message(s, 0);
-	}
-}
-
 int
-ssl3_handshake_msg_start_cbb(SSL *s, CBB *handshake, CBB *body,
-    uint8_t msg_type)
+ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body, uint8_t msg_type)
 {
 	int ret = 0;
 
@@ -1459,7 +1423,7 @@ ssl3_handshake_msg_start_cbb(SSL *s, CBB *handshake, CBB *body,
 }
 
 int
-ssl3_handshake_msg_finish_cbb(SSL *s, CBB *handshake)
+ssl3_handshake_msg_finish(SSL *s, CBB *handshake)
 {
 	unsigned char *data = NULL;
 	size_t outlen;
diff --git a/lib/libssl/ssl_both.c b/lib/libssl/ssl_both.c
index 03f95977f75..788505e6027 100644
--- a/lib/libssl/ssl_both.c
+++ b/lib/libssl/ssl_both.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_both.c,v 1.11 2017/10/08 16:24:02 jsing Exp $ */
+/* $OpenBSD: ssl_both.c,v 1.12 2018/08/24 17:30:32 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -191,12 +191,12 @@ ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen)
 			S3I(s)->previous_server_finished_len = md_len;
 		}
 
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &finished,
+		if (!ssl3_handshake_msg_start(s, &cbb, &finished,
 		    SSL3_MT_FINISHED))
                         goto err;
 		if (!CBB_add_bytes(&finished, S3I(s)->tmp.finish_md, md_len))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = b;
diff --git a/lib/libssl/ssl_clnt.c b/lib/libssl/ssl_clnt.c
index b026aaaee2e..cf055d3ee1d 100644
--- a/lib/libssl/ssl_clnt.c
+++ b/lib/libssl/ssl_clnt.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_clnt.c,v 1.32 2018/08/19 15:38:03 jsing Exp $ */
+/* $OpenBSD: ssl_clnt.c,v 1.33 2018/08/24 17:30:32 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -683,7 +683,7 @@ ssl3_send_client_hello(SSL *s)
 		if (!SSL_IS_DTLS(s) || D1I(s)->send_cookie == 0)
 			arc4random_buf(s->s3->client_random, SSL3_RANDOM_SIZE);
 
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &client_hello,
+		if (!ssl3_handshake_msg_start(s, &cbb, &client_hello,
 		    SSL3_MT_CLIENT_HELLO))
 			goto err;
 
@@ -775,7 +775,7 @@ ssl3_send_client_hello(SSL *s)
 			goto err;
 		}
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_CW_CLNT_HELLO_B;
@@ -2321,7 +2321,7 @@ ssl3_send_client_key_exchange(SSL *s)
 			goto err;
 		}
 
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &kex,
+		if (!ssl3_handshake_msg_start(s, &cbb, &kex,
 		    SSL3_MT_CLIENT_KEY_EXCHANGE))
 			goto err;
 
@@ -2344,7 +2344,7 @@ ssl3_send_client_key_exchange(SSL *s)
 			goto err;
 		}
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_CW_KEY_EXCH_B;
@@ -2378,7 +2378,7 @@ ssl3_send_client_verify(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_CW_CERT_VRFY_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &cert_verify,
+		if (!ssl3_handshake_msg_start(s, &cbb, &cert_verify,
 		    SSL3_MT_CERTIFICATE_VERIFY))
 			goto err;
 
@@ -2489,7 +2489,7 @@ ssl3_send_client_verify(SSL *s)
 		if (!CBB_add_bytes(&cbb_signature, signature, signature_len))
 			goto err;
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_CW_CERT_VRFY_B;
@@ -2561,13 +2561,13 @@ ssl3_send_client_certificate(SSL *s)
 	}
 
 	if (S3I(s)->hs.state == SSL3_ST_CW_CERT_C) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &client_cert,
+		if (!ssl3_handshake_msg_start(s, &cbb, &client_cert,
 		    SSL3_MT_CERTIFICATE))
 			goto err;
 		if (!ssl3_output_cert_chain(s, &client_cert,
 		    (S3I(s)->tmp.cert_req == 2) ? NULL : s->cert->key->x509))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_CW_CERT_D;
diff --git a/lib/libssl/ssl_locl.h b/lib/libssl/ssl_locl.h
index 8e85f100aa0..e5423859afc 100644
--- a/lib/libssl/ssl_locl.h
+++ b/lib/libssl/ssl_locl.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_locl.h,v 1.207 2018/08/19 15:38:03 jsing Exp $ */
+/* $OpenBSD: ssl_locl.h,v 1.208 2018/08/24 17:30:32 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -1137,11 +1137,9 @@ long	ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void));
 int	ssl3_pending(const SSL *s);
 
 int ssl3_handshake_msg_hdr_len(SSL *s);
-unsigned char *ssl3_handshake_msg_start(SSL *s, uint8_t htype);
-void ssl3_handshake_msg_finish(SSL *s, unsigned int len);
-int ssl3_handshake_msg_start_cbb(SSL *s, CBB *handshake, CBB *body,
+int ssl3_handshake_msg_start(SSL *s, CBB *handshake, CBB *body,
     uint8_t msg_type);
-int ssl3_handshake_msg_finish_cbb(SSL *s, CBB *handshake);
+int ssl3_handshake_msg_finish(SSL *s, CBB *handshake);
 int ssl3_handshake_write(SSL *s);
 int ssl3_record_write(SSL *s, int type);
 
diff --git a/lib/libssl/ssl_srvr.c b/lib/libssl/ssl_srvr.c
index 3cf6d9a3cb9..745fd6d83ad 100644
--- a/lib/libssl/ssl_srvr.c
+++ b/lib/libssl/ssl_srvr.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_srvr.c,v 1.42 2018/08/22 17:46:29 jsing Exp $ */
+/* $OpenBSD: ssl_srvr.c,v 1.43 2018/08/24 17:30:32 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -784,10 +784,10 @@ ssl3_send_hello_request(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_HELLO_REQ_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &hello,
+		if (!ssl3_handshake_msg_start(s, &cbb, &hello,
 		    SSL3_MT_HELLO_REQUEST))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_HELLO_REQ_B;
@@ -1175,7 +1175,7 @@ ssl3_send_server_hello(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_SRVR_HELLO_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &server_hello,
+		if (!ssl3_handshake_msg_start(s, &cbb, &server_hello,
 		    SSL3_MT_SERVER_HELLO))
 			goto err;
 
@@ -1232,7 +1232,7 @@ ssl3_send_server_hello(SSL *s)
 			goto err;
 		}
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 	}
 
@@ -1253,10 +1253,10 @@ ssl3_send_server_done(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_SRVR_DONE_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &done,
+		if (!ssl3_handshake_msg_start(s, &cbb, &done,
 		    SSL3_MT_SERVER_DONE))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_SRVR_DONE_B;
@@ -1519,7 +1519,7 @@ ssl3_send_server_key_exchange(SSL *s)
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_KEY_EXCH_A) {
 
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &server_kex,
+		if (!ssl3_handshake_msg_start(s, &cbb, &server_kex,
 		    SSL3_MT_SERVER_KEY_EXCHANGE))
 			goto err;
 
@@ -1600,7 +1600,7 @@ ssl3_send_server_key_exchange(SSL *s)
 				goto err;
 		}
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_KEY_EXCH_B;
@@ -1639,7 +1639,7 @@ ssl3_send_certificate_request(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_CERT_REQ_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &cert_request,
+		if (!ssl3_handshake_msg_start(s, &cbb, &cert_request,
 		    SSL3_MT_CERTIFICATE_REQUEST))
 			goto err;
 
@@ -1679,7 +1679,7 @@ ssl3_send_certificate_request(SSL *s)
 				goto err;
 		}
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_CERT_REQ_B;
@@ -2502,12 +2502,12 @@ ssl3_send_server_certificate(SSL *s)
 			return (0);
 		}
 
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &server_cert,
+		if (!ssl3_handshake_msg_start(s, &cbb, &server_cert,
 		    SSL3_MT_CERTIFICATE))
 			goto err;
 		if (!ssl3_output_cert_chain(s, &server_cert, x))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_CERT_B;
@@ -2548,7 +2548,7 @@ ssl3_send_newsession_ticket(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_SESSION_TICKET_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &session_ticket,
+		if (!ssl3_handshake_msg_start(s, &cbb, &session_ticket,
 		    SSL3_MT_NEWSESSION_TICKET))
 			goto err;
 
@@ -2657,7 +2657,7 @@ ssl3_send_newsession_ticket(SSL *s)
 		if (!HMAC_Final(&hctx, hmac, &hlen))
 			goto err;
 
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_SESSION_TICKET_B;
@@ -2689,7 +2689,7 @@ ssl3_send_cert_status(SSL *s)
 	memset(&cbb, 0, sizeof(cbb));
 
 	if (S3I(s)->hs.state == SSL3_ST_SW_CERT_STATUS_A) {
-		if (!ssl3_handshake_msg_start_cbb(s, &cbb, &certstatus,
+		if (!ssl3_handshake_msg_start(s, &cbb, &certstatus,
 		    SSL3_MT_CERTIFICATE_STATUS))
 			goto err;
 		if (!CBB_add_u8(&certstatus, s->tlsext_status_type))
@@ -2699,7 +2699,7 @@ ssl3_send_cert_status(SSL *s)
 		if (!CBB_add_bytes(&ocspresp, s->internal->tlsext_ocsp_resp,
 		    s->internal->tlsext_ocsp_resplen))
 			goto err;
-		if (!ssl3_handshake_msg_finish_cbb(s, &cbb))
+		if (!ssl3_handshake_msg_finish(s, &cbb))
 			goto err;
 
 		S3I(s)->hs.state = SSL3_ST_SW_CERT_STATUS_B;