Fix #81658: MYSQL_OPT_LOAD_DATA_LOCAL_DIR not available in MariaDB

This also introduces the boolean userland constant `MYSQLI_IS_MARIADB`.

Author: devnexen

NEWS

@@ -10,6 +10,11 @@ PHP                                                                        NEWS
 - MBString:
   . Fixed bug #81693 (mb_check_encoding(7bit) segfaults). (cmb)
 
+- MySQLi:
+  . Fixed bug #81658 (MYSQL_OPT_LOAD_DATA_LOCAL_DIR not available in MariaDB).
+    (devnexen)
+  . Introduced MYSQLI_IS_MARIADB. (devnexen)
+
 - Reflection:
   . Fixed bug #81681 (ReflectionEnum throwing exceptions). (cmb)
 

ext/mysqli/mysqli.c

@@ -596,7 +596,7 @@ PHP_MINIT_FUNCTION(mysqli)
 	REGISTER_LONG_CONSTANT("MYSQLI_READ_DEFAULT_FILE", MYSQL_READ_DEFAULT_FILE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("MYSQLI_OPT_CONNECT_TIMEOUT", MYSQL_OPT_CONNECT_TIMEOUT, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("MYSQLI_OPT_LOCAL_INFILE", MYSQL_OPT_LOCAL_INFILE, CONST_CS | CONST_PERSISTENT);
-#if MYSQL_VERSION_ID >= 80021 || defined(MYSQLI_USE_MYSQLND)
+#if (MYSQL_VERSION_ID >= 80021 && !defined(MARIADB_BASE_VERSION)) || defined(MYSQLI_USE_MYSQLND)
 	REGISTER_LONG_CONSTANT("MYSQLI_OPT_LOAD_DATA_LOCAL_DIR", MYSQL_OPT_LOAD_DATA_LOCAL_DIR, CONST_CS | CONST_PERSISTENT);
 #endif
 	REGISTER_LONG_CONSTANT("MYSQLI_INIT_COMMAND", MYSQL_INIT_COMMAND, CONST_CS | CONST_PERSISTENT);
@@ -772,6 +772,12 @@ PHP_MINIT_FUNCTION(mysqli)
 	REGISTER_LONG_CONSTANT("MYSQLI_TRANS_COR_RELEASE", TRANS_COR_RELEASE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("MYSQLI_TRANS_COR_NO_RELEASE", TRANS_COR_NO_RELEASE, CONST_CS | CONST_PERSISTENT);
 
+#ifdef MARIADB_BASE_VERSION
+	REGISTER_BOOL_CONSTANT("MYSQLI_IS_MARIADB", 1, CONST_CS | CONST_PERSISTENT);
+#else
+	REGISTER_BOOL_CONSTANT("MYSQLI_IS_MARIADB", 0, CONST_CS | CONST_PERSISTENT);
+#endif
+
 
 #ifdef MYSQLI_USE_MYSQLND
 	mysqlnd_reverse_api_register_api(&mysqli_reverse_api);

ext/mysqli/mysqli_api.c

@@ -1720,7 +1720,7 @@ static int mysqli_options_get_option_zval_type(int option)
 #if MYSQL_VERSION_ID > 50605 || defined(MYSQLI_USE_MYSQLND)
 		case MYSQL_SERVER_PUBLIC_KEY:
 #endif
-#if MYSQL_VERSION_ID >= 80021 || defined(MYSQLI_USE_MYSQLND)
+#if (MYSQL_VERSION_ID >= 80021 && !defined(MARIADB_BASE_VERSION)) || defined(MYSQLI_USE_MYSQLND)
 		case MYSQL_OPT_LOAD_DATA_LOCAL_DIR:
 #endif
 			return IS_STRING;

ext/mysqli/mysqli_nonapi.c

@@ -333,7 +333,7 @@ void mysqli_common_connect(INTERNAL_FUNCTION_PARAMETERS, bool is_real_connect, b
 	unsigned int allow_local_infile = MyG(allow_local_infile);
 	mysql_options(mysql->mysql, MYSQL_OPT_LOCAL_INFILE, (char *)&allow_local_infile);
 
-#if MYSQL_VERSION_ID >= 80021 || defined(MYSQLI_USE_MYSQLND)
+#if (MYSQL_VERSION_ID >= 80021 && !defined(MARIADB_BASE_VERSION)) || defined(MYSQLI_USE_MYSQLND)
 	if (MyG(local_infile_directory) && !php_check_open_basedir(MyG(local_infile_directory))) {
 		mysql_options(mysql->mysql, MYSQL_OPT_LOAD_DATA_LOCAL_DIR, MyG(local_infile_directory));
 	}

ext/mysqli/tests/mysqli_constants.phpt

@@ -47,6 +47,7 @@ $expected_constants = array(
     "MYSQLI_GROUP_FLAG" 				=> true,
     "MYSQLI_SERVER_QUERY_NO_GOOD_INDEX_USED"=> true,
     "MYSQLI_SERVER_QUERY_NO_INDEX_USED"	=> true,
+    "MYSQLI_IS_MARIADB"                 => true,
 
     "MYSQLI_TYPE_DECIMAL"				=> true,
     "MYSQLI_TYPE_TINY"					=> true,
@@ -180,7 +181,7 @@ if ($IS_MYSQLND) {
     $expected_constants["MYSQLI_TYPE_JSON"]	= true;
 }
 
-if ($version > 80021 || $IS_MYSQLND) {
+if (($version > 80021 && $constants['mysqli']['MYSQLI_IS_MARIADB']) || $IS_MYSQLND) {
     $expected_constants['MYSQLI_OPT_LOAD_DATA_LOCAL_DIR'] = true;
 }
 

ext/pdo_mysql/mysql_driver.c

@@ -544,7 +544,7 @@ static int pdo_mysql_get_attribute(pdo_dbh_t *dbh, zend_long attr, zval *return_
 			ZVAL_BOOL(return_value, H->local_infile);
 			break;
 
-#if MYSQL_VERSION_ID >= 80021 || defined(PDO_USE_MYSQLND)
+#if (MYSQL_VERSION_ID >= 80021 && !defined(MARIADB_BASE_VERSION)) || defined(PDO_USE_MYSQLND)
 		case PDO_MYSQL_ATTR_LOCAL_INFILE_DIRECTORY:
 		{
 			const char* local_infile_directory = NULL;
@@ -765,7 +765,7 @@ static int pdo_mysql_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
 #endif
 		}
 
-#if MYSQL_VERSION_ID >= 80021 || defined(PDO_USE_MYSQLND)
+#if (MYSQL_VERSION_ID >= 80021 && !defined(MARIADB_BASE_VERSION)) || defined(PDO_USE_MYSQLND)
 		zend_string *local_infile_directory = pdo_attr_strval(driver_options, PDO_MYSQL_ATTR_LOCAL_INFILE_DIRECTORY, NULL);
 		if (local_infile_directory && !php_check_open_basedir(ZSTR_VAL(local_infile_directory))) {
 			if (mysql_options(H->server, MYSQL_OPT_LOAD_DATA_LOCAL_DIR, (const char *)ZSTR_VAL(local_infile_directory))) {