Fixed bug #62889

Our minimum libmysqlclient version requirement is high enough
that we don't need to check for MYSQL_OPT_LOCAL_INFILE support.

However, the mysql_get_option() function seems to only be available
since 5.7 (though it's really hard to find any definitie information
on when MySQL introduced certain functions or changes...) so we
need to store the value of the flag locally to make it available
through getAttribute().

NEWS

@@ -56,6 +56,7 @@ PHP                                                                        NEWS
     missing). (Nikita)
   . Fixed bug #72368 (PdoStatement->execute() fails but does not throw an
     exception). (Nikita)
+  . Fixed bug #62889 (LOAD DATA INFILE broken). (Nikita)
 
 - Phar:
   . Fixed bug #73809 (Phar Zip parse crash - mmap fail). (cmb)

ext/pdo_mysql/mysql_driver.c

@@ -508,13 +508,11 @@ static int pdo_mysql_get_attribute(pdo_dbh_t *dbh, zend_long attr, zval *return_
 		case PDO_MYSQL_ATTR_MAX_BUFFER_SIZE:
 			ZVAL_LONG(return_value, H->max_buffer_size);
 			break;
-#else
+#endif
+
 		case PDO_MYSQL_ATTR_LOCAL_INFILE:
-			ZVAL_BOOL(
-				return_value,
-				(H->server->data->options->flags & CLIENT_LOCAL_FILES) == CLIENT_LOCAL_FILES);
+			ZVAL_BOOL(return_value, H->local_infile);
 			break;
-#endif
 
 		default:
 			PDO_DBG_RETURN(0);
@@ -709,18 +707,15 @@ static int pdo_mysql_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
 			goto cleanup;
 		}
 
-#if defined(MYSQL_OPT_LOCAL_INFILE) || defined(PDO_USE_MYSQLND)
-		unsigned int local_infile = (unsigned int) pdo_attr_lval(driver_options, PDO_MYSQL_ATTR_LOCAL_INFILE, 0);
-# ifndef PDO_USE_MYSQLND
-		if (PG(open_basedir) && PG(open_basedir)[0] != '\0') {
-			local_infile = 0;
-		}
-# endif
-		if (mysql_options(H->server, MYSQL_OPT_LOCAL_INFILE, (const char *)&local_infile)) {
-			pdo_mysql_error(dbh);
-			goto cleanup;
-		}
+		if (pdo_attr_lval(driver_options, PDO_MYSQL_ATTR_LOCAL_INFILE, 0)) {
+			H->local_infile = 1;
+#ifndef PDO_USE_MYSQLND
+			if (PG(open_basedir) && PG(open_basedir)[0] != '\0') {
+				H->local_infile = 0;
+			}
 #endif
+		}
+
 #ifdef MYSQL_OPT_RECONNECT
 		/* since 5.0.3, the default for this option is 0 if not specified.
 		 * we want the old behaviour
@@ -824,15 +819,13 @@ static int pdo_mysql_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
 			}
 		}
 #endif
-	} else {
-#if defined(MYSQL_OPT_LOCAL_INFILE) || defined(PDO_USE_MYSQLND)
-		// in case there are no driver options disable 'local infile' explicitly
-		unsigned int local_infile = 0;
-		if (mysql_options(H->server, MYSQL_OPT_LOCAL_INFILE, (const char *)&local_infile)) {
-			pdo_mysql_error(dbh);
-			goto cleanup;
-		}
-#endif
+	}
+
+	/* Always explicitly set the LOCAL_INFILE option. */
+	unsigned int local_infile = H->local_infile;
+	if (mysql_options(H->server, MYSQL_OPT_LOCAL_INFILE, (const char *)&local_infile)) {
+		pdo_mysql_error(dbh);
+		goto cleanup;
 	}
 
 	if (vars[0].optval && mysql_options(H->server, MYSQL_SET_CHARSET_NAME, vars[0].optval)) {

ext/pdo_mysql/php_pdo_mysql_int.h

@@ -104,6 +104,7 @@ typedef struct {
 	unsigned buffered:1;
 	unsigned emulate_prepare:1;
 	unsigned fetch_table_names:1;
+	unsigned local_infile:1;
 #ifndef PDO_USE_MYSQLND
 	zend_ulong max_buffer_size;
 #endif