mirror of https://github.com/hashicorp/consul
76 lines
2.5 KiB
Go
76 lines
2.5 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package acl
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import (
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"fmt"
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"regexp"
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"strings"
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)
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const (
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ServiceIdentityNameMaxLength = 256
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NodeIdentityNameMaxLength = 256
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PolicyNameMaxLength = 128
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)
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var (
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validServiceIdentityName = regexp.MustCompile(`^[a-z0-9]([a-z0-9\-_]*[a-z0-9])?$`)
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validNodeIdentityName = regexp.MustCompile(`^[a-z0-9]([a-z0-9\-_]*[a-z0-9])?$`)
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validPolicyName = regexp.MustCompile(`^[A-Za-z0-9\-_]+\/?[A-Za-z0-9\-_]*$`)
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validRoleName = regexp.MustCompile(`^[A-Za-z0-9\-_]{1,256}$`)
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validAuthMethodName = regexp.MustCompile(`^[A-Za-z0-9\-_]{1,128}$`)
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)
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// IsValidServiceIdentityName returns true if the provided name can be used as
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// an ACLServiceIdentity ServiceName. This is more restrictive than standard
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// catalog registration, which basically takes the view that "everything is
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// valid".
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func IsValidServiceIdentityName(name string) bool {
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if len(name) < 1 || len(name) > ServiceIdentityNameMaxLength {
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return false
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}
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return validServiceIdentityName.MatchString(name)
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}
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// IsValidNodeIdentityName returns true if the provided name can be used as
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// an ACLNodeIdentity NodeName. This is more restrictive than standard
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// catalog registration, which basically takes the view that "everything is
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// valid".
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func IsValidNodeIdentityName(name string) bool {
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if len(name) < 1 || len(name) > NodeIdentityNameMaxLength {
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return false
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}
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return validNodeIdentityName.MatchString(name)
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}
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// ValidatePolicyName returns nil if the provided name can be used as an
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// ACLPolicy Name otherwise a useful error is returned.
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func ValidatePolicyName(name string) error {
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if len(name) < 1 || len(name) > PolicyNameMaxLength {
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return fmt.Errorf("Invalid Policy: invalid Name. Length must be greater than 0 and less than %d", PolicyNameMaxLength)
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}
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if strings.HasPrefix(name, "/") || strings.HasPrefix(name, ReservedBuiltinPrefix) {
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return fmt.Errorf("Invalid Policy: invalid Name. Names cannot be prefixed with '/' or '%s'", ReservedBuiltinPrefix)
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}
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if !validPolicyName.MatchString(name) {
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return fmt.Errorf("Invalid Policy: invalid Name. Only alphanumeric characters, a single '/', '-' and '_' are allowed")
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}
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return nil
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}
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// IsValidRoleName returns true if the provided name can be used as an
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// ACLRole Name.
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func IsValidRoleName(name string) bool {
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return validRoleName.MatchString(name)
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}
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// IsValidRoleName returns true if the provided name can be used as an
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// ACLAuthMethod Name.
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func IsValidAuthMethodName(name string) bool {
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return validAuthMethodName.MatchString(name)
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}
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