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fatedier
49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
// Copyright 2026 The frp Authors
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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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package validation
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import (
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"fmt"
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"unicode"
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"unicode/utf8"
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)
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const (
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// MaxRunIDLength is the maximum number of bytes accepted for a control run ID.
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MaxRunIDLength = 64
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)
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func validateIdentifier(value, kind string, maxLength int) error {
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if value == "" {
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return fmt.Errorf("%s cannot be empty", kind)
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}
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if len(value) > maxLength {
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return fmt.Errorf("%s is too long: length %d exceeds maximum %d", kind, len(value), maxLength)
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}
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if !utf8.ValidString(value) {
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return fmt.Errorf("%s must be valid UTF-8", kind)
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}
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for _, r := range value {
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if !unicode.IsPrint(r) {
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return fmt.Errorf("%s contains non-printable character", kind)
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}
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}
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return nil
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}
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func ValidateRunID(runID string) error {
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return validateIdentifier(runID, "run id", MaxRunIDLength)
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}
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