From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Tue, 6 Sep 2022 09:42:52 +0200
Subject: revert: track SSL_ERROR_ZERO_RETURN explicitly.

This reverts commit ebd8b8965c74ab06bb91f7a00b23822e1f1f26ca.

It is causing significant TLS failures in Node.js.

diff --git a/ssl/ssl_buffer.cc b/ssl/ssl_buffer.cc
index 2ca14efae5ea478f43794a81883b00dfdb1a37b0..d73055fbf39334925ef4b4804bbaca57c4a4d5d3 100644
--- a/ssl/ssl_buffer.cc
+++ b/ssl/ssl_buffer.cc
@@ -232,7 +232,6 @@ int ssl_handle_open_record(SSL *ssl, bool *out_retry, ssl_open_record_t ret,
       return 1;
 
     case ssl_open_record_close_notify:
-      ssl->s3->rwstate = SSL_ERROR_ZERO_RETURN;
       return 0;
 
     case ssl_open_record_error:
diff --git a/ssl/ssl_lib.cc b/ssl/ssl_lib.cc
index 58b68e6759650b9a2a3915aa343451bdd1ec1e89..a709ab4067a001ce1087f89c3b5d66e99ba0d4f7 100644
--- a/ssl/ssl_lib.cc
+++ b/ssl/ssl_lib.cc
@@ -1334,7 +1334,7 @@ int SSL_get_error(const SSL *ssl, int ret_code) {
   }
 
   if (ret_code == 0) {
-    if (ssl->s3->rwstate == SSL_ERROR_ZERO_RETURN) {
+    if (ssl->s3->read_shutdown == ssl_shutdown_close_notify) {
       return SSL_ERROR_ZERO_RETURN;
     }
     // An EOF was observed which violates the protocol, and the underlying
@@ -2705,13 +2705,7 @@ void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx) {
   return CRYPTO_get_ex_data(&ctx->ex_data, idx);
 }
 
-int SSL_want(const SSL *ssl) {
-  // Historically, OpenSSL did not track |SSL_ERROR_ZERO_RETURN| as an |rwstate|
-  // value. We do, but map it back to |SSL_ERROR_NONE| to preserve the original
-  // behavior.
-  return ssl->s3->rwstate == SSL_ERROR_ZERO_RETURN ? SSL_ERROR_NONE
-                                                   : ssl->s3->rwstate;
-}
+int SSL_want(const SSL *ssl) { return ssl->s3->rwstate; }
 
 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,
                                   RSA *(*cb)(SSL *ssl, int is_export,
