Fix GH-19245: Success error message on TLS stream accept failure

This overwrites the previous message from the successful accept call.

Closes GH-19246

Author: bukka

ext/openssl/tests/gh19245.phpt

@@ -0,0 +1,53 @@
+--TEST--
+GH-19245: Success error message on TLS stream accept failure
+--EXTENSIONS--
+openssl
+--SKIPIF--
+<?php
+if (!function_exists("proc_open")) die("skip no proc_open");
+?>
+--FILE--
+<?php
+include 'ServerClientTestCase.inc';
+
+$baseDir = __DIR__ . '/gh19245';
+$baseDirCertFile = $baseDir . '/cert.crt';
+$baseDirPkFile = $baseDir . '/private.key';
+
+$serverCodeTemplate = <<<'CODE'
+    ini_set('log_errors', 'On');
+    ini_set('open_basedir',  __DIR__ . '/gh19245');
+    $serverUri = "ssl://127.0.0.1:0";
+    $serverFlags = STREAM_SERVER_BIND | STREAM_SERVER_LISTEN;
+    $serverCtx = stream_context_create(['ssl' => [
+        'local_cert' => '%s',
+        'local_pk' => '%s',
+    ]]);
+
+    $sock = stream_socket_server($serverUri, $errno, $errstr, $serverFlags, $serverCtx);
+    phpt_notify_server_start($sock);
+
+    $link = stream_socket_accept($sock);
+CODE;
+
+$clientCode = <<<'CODE'
+    $serverUri = "ssl://{{ ADDR }}";
+    $clientFlags = STREAM_CLIENT_CONNECT;
+
+    $clientCtx = stream_context_create(['ssl' => [
+        'verify_peer' => false,
+        'verify_peer_name' => false
+    ]]);
+
+    @stream_socket_client($serverUri, $errno, $errstr, 2, $clientFlags, $clientCtx);
+CODE;
+
+$serverCode = sprintf($serverCodeTemplate, $baseDirCertFile . "\0test", $baseDirPkFile);
+ServerClientTestCase::getInstance()->run($clientCode, $serverCode);
+
+?>
+--EXPECTF--
+PHP Warning:  stream_socket_accept(): Path for local_cert in ssl stream context option must not contain any null bytes in %s
+PHP Warning:  stream_socket_accept(): Unable to get real path of certificate file `%scert.crt' in %s
+PHP Warning:  stream_socket_accept(): Failed to enable crypto in %s
+PHP Warning:  stream_socket_accept(): Accept failed: Cannot enable crypto in %s

ext/openssl/xp_ssl.c

@@ -2398,6 +2398,12 @@ static inline int php_openssl_tcp_sockop_accept(php_stream *stream, php_openssl_
 				php_stream_close(xparam->outputs.client);
 				xparam->outputs.client = NULL;
 				xparam->outputs.returncode = -1;
+				if (xparam->want_errortext) {
+					if (xparam->outputs.error_text) {
+						zend_string_free(xparam->outputs.error_text);
+					}
+					xparam->outputs.error_text = ZSTR_INIT_LITERAL("Cannot enable crypto", 0);
+				}
 			}
 		}
 	}