[v8.x backport] Support both OpenSSL 1.1.0 and 1.0.2

doc/api/tls.md

@@ -558,12 +558,12 @@ Always returns `true`. This may be used to distinguish TLS sockets from regular
 added: v0.11.4
 -->
 
-Returns an object representing the cipher name and the SSL/TLS protocol version
-that first defined the cipher.
+Returns an object representing the cipher name. The `version` key is a legacy
+field which always contains the value `'TLSv1/SSLv3'`.
 
 For example: `{ name: 'AES256-SHA', version: 'TLSv1/SSLv3' }`
 
-See `SSL_CIPHER_get_name()` and `SSL_CIPHER_get_version()` in
+See `SSL_CIPHER_get_name()` in
 https://www.openssl.org/docs/man1.0.2/ssl/SSL_CIPHER_get_name.html for more
 information.
 

src/node_constants.cc

@@ -755,6 +755,10 @@ void DefineSignalConstants(Local<Object> target) {
 }
 
 void DefineOpenSSLConstants(Local<Object> target) {
+#ifdef OPENSSL_VERSION_NUMBER
+    NODE_DEFINE_CONSTANT(target, OPENSSL_VERSION_NUMBER);
+#endif
+
 #ifdef SSL_OP_ALL
     NODE_DEFINE_CONSTANT(target, SSL_OP_ALL);
 #endif