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krb5_cache.go
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/
krb5_cache.go
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// Copyright 2023 jim.zoumo@gmail.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package krb5
import (
"github.com/jcmturner/gokrb5/v8/credentials"
"github.com/pkg/errors"
)
func GetDefaultPrinciplaNameFromCCache(ccache string) (string, error) {
if ccache == "" {
return "", errors.New("invalid ccache file path")
}
c, err := credentials.LoadCCache(ccache)
if err != nil {
return "", errors.Wrap(err, "failed to load kerberos ccache")
}
if len(c.DefaultPrincipal.PrincipalName.NameString) == 0 {
return "", errors.New("empty principalName")
}
return c.DefaultPrincipal.PrincipalName.NameString[0], nil
}