src: initialize openssl only once

For compatibility with OpenSSL 1.1.0 and 1.0.1 a series of
initialization wrappers were being called, many deprecated, and many
calling each other internally already. Compatibility is unnecessary in
12.x and later, which support only OpenSSL 1.1.1, and the multiple calls
cause the configuration file to be loaded multiple times.

Fixes: #29702

See:
- https://mta.openssl.org/pipermail/openssl-users/2019-October/011303.html
- https://www.openssl.org/docs/man1.1.1/man3/OPENSSL_init_ssl.html
- https://www.openssl.org/docs/man1.1.1/man3/OPENSSL_init_crypto.html

PR-URL: #29999
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>

Author: sam-github

src/node.cc

@@ -833,13 +833,6 @@ int InitializeNodeWithArgs(std::vector<std::string>* argv,
                             &default_env_options->redirect_warnings);
   }
 
-#if HAVE_OPENSSL
-  std::string* openssl_config = &per_process::cli_options->openssl_config;
-  if (openssl_config->empty()) {
-    credentials::SafeGetenv("OPENSSL_CONF", openssl_config);
-  }
-#endif
-
 #if !defined(NODE_WITHOUT_NODE_OPTIONS)
   std::string node_options;
 

src/node_crypto.cc

@@ -6975,30 +6975,19 @@ void TimingSafeEqual(const FunctionCallbackInfo<Value>& args) {
 }
 
 void InitCryptoOnce() {
-  SSL_load_error_strings();
-  OPENSSL_no_config();
+#ifndef OPENSSL_IS_BORINGSSL
+  OPENSSL_INIT_SETTINGS* settings = OPENSSL_INIT_new();
 
   // --openssl-config=...
   if (!per_process::cli_options->openssl_config.empty()) {
-    OPENSSL_load_builtin_modules();
-#ifndef OPENSSL_NO_ENGINE
-    ENGINE_load_builtin_engines();
-#endif
-    ERR_clear_error();
-    CONF_modules_load_file(per_process::cli_options->openssl_config.c_str(),
-                           nullptr,
-                           CONF_MFLAGS_DEFAULT_SECTION);
-    int err = ERR_get_error();
-    if (0 != err) {
-      fprintf(stderr,
-              "openssl config failed: %s\n",
-              ERR_error_string(err, nullptr));
-      CHECK_NE(err, 0);
-    }
+    const char* conf = per_process::cli_options->openssl_config.c_str();
+    OPENSSL_INIT_set_config_filename(settings, conf);
   }
 
-  SSL_library_init();
-  OpenSSL_add_all_algorithms();
+  OPENSSL_init_ssl(0, settings);
+  OPENSSL_INIT_free(settings);
+  settings = nullptr;
+#endif
 
 #ifdef NODE_FIPS_MODE
   /* Override FIPS settings in cnf file, if needed. */