80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
// Copyright 2026 Alibaba Group
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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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package errors
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import (
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stderrors "errors"
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"path/filepath"
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"strings"
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"unicode"
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)
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var (
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ErrInvalidResourceName = stderrors.New("invalid resource name")
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ErrUnsafePath = stderrors.New("unsafe path detected")
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)
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func ResourceName(name string) error {
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if name == "" {
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return stderrors.New("resource name cannot be empty")
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}
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if len([]rune(name)) > 128 {
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return stderrors.New("resource name too long (max 128 characters)")
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}
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for _, r := range name {
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if unicode.IsLetter(r) || unicode.IsDigit(r) || r == '_' || r == '-' {
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continue
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}
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return ErrInvalidResourceName
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}
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if unicode.IsDigit([]rune(name)[0]) {
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return ErrInvalidResourceName
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}
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return nil
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}
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func SafePath(path string) error {
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if path == "" {
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return stderrors.New("path cannot be empty")
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}
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cleanPath := filepath.Clean(path)
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if strings.Contains(cleanPath, "..") {
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return ErrUnsafePath
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}
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if strings.ContainsRune(path, '\x00') {
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return ErrUnsafePath
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}
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lowerPath := strings.ToLower(path)
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for _, pattern := range []string{
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"..",
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"~",
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"$(",
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"`",
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"|",
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";",
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"&",
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"<",
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">",
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"\n",
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"\r",
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} {
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if strings.Contains(lowerPath, pattern) {
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return ErrUnsafePath
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}
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}
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return nil
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}
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