101 lines
2.6 KiB
Go
101 lines
2.6 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"regexp"
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"runtime"
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"strings"
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"unicode/utf8"
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)
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// validVolname regexp.
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var validVolname = regexp.MustCompile(`^.{3,63}$`)
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// isValidVolname verifies a volname name in accordance with object
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// layer requirements.
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func isValidVolname(volname string) bool {
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if !validVolname.MatchString(volname) {
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return false
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}
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switch runtime.GOOS {
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case "windows":
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// Volname shouldn't have reserved characters on windows in it.
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return !strings.ContainsAny(volname, "/\\:*?\"<>|")
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default:
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// Volname shouldn't have '/' in it.
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return !strings.ContainsAny(volname, "/")
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}
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}
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// Keeping this as lower bound value supporting Linux, Darwin and Windows operating systems.
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const pathMax = 4096
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// isValidPath verifies if a path name is in accordance with FS limitations.
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func isValidPath(path string) bool {
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// TODO: Make this FSType or Operating system specific.
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if len(path) > pathMax || len(path) == 0 {
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return false
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}
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if !utf8.ValidString(path) {
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return false
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}
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return true
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}
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// isValidPrefix verifies where the prefix is a valid path.
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func isValidPrefix(prefix string) bool {
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// Prefix can be empty.
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if prefix == "" || prefix == "/" {
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return true
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}
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// Verify if prefix is a valid path.
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return isValidPath(prefix)
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}
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// List of reserved words for files, includes old and new ones.
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var reservedKeywords = []string{
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"$multiparts",
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"$tmpobject",
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"$tmpfile",
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// Add new reserved words if any used in future.
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}
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// hasReservedPrefix - returns true if name has a reserved keyword suffixed.
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func hasReservedSuffix(name string) (isReserved bool) {
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for _, reservedKey := range reservedKeywords {
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if strings.HasSuffix(name, reservedKey) {
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isReserved = true
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break
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}
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isReserved = false
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}
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return isReserved
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}
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// hasReservedPrefix - has reserved prefix.
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func hasReservedPrefix(name string) (isReserved bool) {
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for _, reservedKey := range reservedKeywords {
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if strings.HasPrefix(name, reservedKey) {
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isReserved = true
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break
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}
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isReserved = false
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}
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return isReserved
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}
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