src: add GetCipherValue function

This commit extracts the code that is the same in GetCipherName,
GetCipherStandardName, and GetCipherVersion into function named
GetCipherValue.

The motivation for this change is to improve readabilty by removing the
duplicated code.

PR-URL: #34287
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: danbev

src/node_crypto_common.cc

@@ -386,31 +386,27 @@ Local<Value> ToV8Value(Environment* env, const BIOPointer& bio) {
   return ret.FromMaybe(Local<Value>());
 }
 
-MaybeLocal<Value> GetCipherName(
-    Environment* env,
-    const SSL_CIPHER* cipher) {
+MaybeLocal<Value> GetCipherValue(Environment* env,
+    const SSL_CIPHER* cipher,
+    const char* (*getstr)(const SSL_CIPHER* cipher)) {
   if (cipher == nullptr)
     return Undefined(env->isolate());
 
-  return OneByteString(env->isolate(), SSL_CIPHER_get_name(cipher));
+  return OneByteString(env->isolate(), getstr(cipher));
 }
 
-MaybeLocal<Value> GetCipherStandardName(
-    Environment* env,
-    const SSL_CIPHER* cipher) {
-  if (cipher == nullptr)
-    return Undefined(env->isolate());
-
-  return OneByteString(env->isolate(), SSL_CIPHER_standard_name(cipher));
+MaybeLocal<Value> GetCipherName(Environment* env, const SSL_CIPHER* cipher) {
+  return GetCipherValue(env, cipher, SSL_CIPHER_get_name);
 }
 
-MaybeLocal<Value> GetCipherVersion(
+MaybeLocal<Value> GetCipherStandardName(
     Environment* env,
     const SSL_CIPHER* cipher) {
-  if (cipher == nullptr)
-    return Undefined(env->isolate());
+  return GetCipherValue(env, cipher, SSL_CIPHER_standard_name);
+}
 
-  return OneByteString(env->isolate(), SSL_CIPHER_get_version(cipher));
+MaybeLocal<Value> GetCipherVersion(Environment* env, const SSL_CIPHER* cipher) {
+  return GetCipherValue(env, cipher, SSL_CIPHER_get_version);
 }
 
 StackOfX509 CloneSSLCerts(X509Pointer&& cert,