Provide ssl_version_string() function, which uses one of those modern C

constructs (a switch statement) and returns the appropriate string defined
by SSL_TXT_* for the given version, including support for DTLSv1 and
DTLSv1-bad. Use this function in SSL_get_version() and SSL_SESSION_print().

ok beck@

4 files changed, 31 insertions, 28 deletions

diff --git a/lib/libssl/ssl.h b/lib/libssl/ssl.h
index 5ea440231a8..7547d05aa64 100644
--- a/lib/libssl/ssl.h
+++ b/lib/libssl/ssl.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl.h,v 1.61 2014/07/11 09:24:44 beck Exp $ */
+/* $OpenBSD: ssl.h,v 1.62 2014/07/12 19:45:53 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -293,6 +293,8 @@ extern "C" {
 #define SSL_TXT_SHA256		"SHA256"
 #define SSL_TXT_SHA384		"SHA384"
 
+#define SSL_TXT_DTLS1		"DTLSv1"
+#define SSL_TXT_DTLS1_BAD	"DTLSv1-bad"
 #define SSL_TXT_SSLV2		"SSLv2"
 #define SSL_TXT_SSLV3		"SSLv3"
 #define SSL_TXT_TLSV1		"TLSv1"
diff --git a/lib/libssl/ssl_lib.c b/lib/libssl/ssl_lib.c
index db310de881b..b563071cdad 100644
--- a/lib/libssl/ssl_lib.c
+++ b/lib/libssl/ssl_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_lib.c,v 1.76 2014/07/12 16:03:37 miod Exp $ */
+/* $OpenBSD: ssl_lib.c,v 1.77 2014/07/12 19:45:53 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -2410,18 +2410,30 @@ ssl_bad_method(int ver)
 }
 
 const char *
+ssl_version_string(int ver)
+{
+	switch (ver) {
+	case DTLS1_BAD_VER:
+		return (SSL_TXT_DTLS1_BAD);
+	case DTLS1_VERSION:
+		return (SSL_TXT_DTLS1);
+	case SSL3_VERSION:
+		return (SSL_TXT_SSLV3);
+	case TLS1_VERSION:
+		return (SSL_TXT_TLSV1);
+	case TLS1_1_VERSION:
+		return (SSL_TXT_TLSV1_1);
+	case TLS1_2_VERSION:
+		return (SSL_TXT_TLSV1_2);
+	default:
+		return ("unknown");
+	}
+}
+
+const char *
 SSL_get_version(const SSL *s)
 {
-	if (s->version == TLS1_2_VERSION)
-		return ("TLSv1.2");
-	else if (s->version == TLS1_1_VERSION)
-		return ("TLSv1.1");
-	else if (s->version == TLS1_VERSION)
-		return ("TLSv1");
-	else if (s->version == SSL3_VERSION)
-		return ("SSLv3");
-	else
-		return ("unknown");
+	return ssl_version_string(s->version);
 }
 
 SSL *
diff --git a/lib/libssl/ssl_locl.h b/lib/libssl/ssl_locl.h
index 0d96ee5fe8b..22ba8d926e5 100644
--- a/lib/libssl/ssl_locl.h
+++ b/lib/libssl/ssl_locl.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_locl.h,v 1.60 2014/07/12 13:11:53 jsing Exp $ */
+/* $OpenBSD: ssl_locl.h,v 1.61 2014/07/12 19:45:53 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -543,6 +543,7 @@ extern SSL3_ENC_METHOD ssl3_undef_enc_method;
 extern SSL_CIPHER ssl3_ciphers[];
 
 SSL_METHOD *ssl_bad_method(int ver);
+const char *ssl_version_string(int ver);
 
 extern SSL3_ENC_METHOD TLSv1_enc_data;
 extern SSL3_ENC_METHOD TLSv1_1_enc_data;
diff --git a/lib/libssl/ssl_txt.c b/lib/libssl/ssl_txt.c
index 950620d300b..3540bab3137 100644
--- a/lib/libssl/ssl_txt.c
+++ b/lib/libssl/ssl_txt.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_txt.c,v 1.23 2014/07/11 09:24:44 beck Exp $ */
+/* $OpenBSD: ssl_txt.c,v 1.24 2014/07/12 19:45:53 jsing Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -112,20 +112,8 @@ SSL_SESSION_print(BIO *bp, const SSL_SESSION *x)
 		goto err;
 	if (BIO_puts(bp, "SSL-Session:\n") <= 0)
 		goto err;
-	if (x->ssl_version == SSL3_VERSION)
-		s = "SSLv3";
-	else if (x->ssl_version == TLS1_2_VERSION)
-		s = "TLSv1.2";
-	else if (x->ssl_version == TLS1_1_VERSION)
-		s = "TLSv1.1";
-	else if (x->ssl_version == TLS1_VERSION)
-		s = "TLSv1";
-	else if (x->ssl_version == DTLS1_VERSION)
-		s = "DTLSv1";
-	else if (x->ssl_version == DTLS1_BAD_VER)
-		s = "DTLSv1-bad";
-	else
-		s = "unknown";
+	
+	s = ssl_version_string(x->ssl_version);
 	if (BIO_printf(bp, "    Protocol  : %s\n", s) <= 0)
 		goto err;