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package sarama
import (
krb5client "gopkg.in/jcmturner/gokrb5.v7/client"
krb5config "gopkg.in/jcmturner/gokrb5.v7/config"
"gopkg.in/jcmturner/gokrb5.v7/keytab"
"gopkg.in/jcmturner/gokrb5.v7/types"
)
type KerberosGoKrb5Client struct {
krb5client.Client
}
func (c *KerberosGoKrb5Client) Domain() string {
return c.Credentials.Domain()
}
func (c *KerberosGoKrb5Client) CName() types.PrincipalName {
return c.Credentials.CName()
}
/*
*
* Create kerberos client used to obtain TGT and TGS tokens
* used gokrb5 library, which is a pure go kerberos client with
* some GSS-API capabilities, and SPNEGO support. Kafka does not use SPNEGO
* it uses pure Kerberos 5 solution (RFC-4121 and RFC-4120).
*
*/
func NewKerberosClient(config *GSSAPIConfig) (KerberosClient, error) {
cfg, err := krb5config.Load(config.KerberosConfigPath)
if err != nil {
return nil, err
}
return createClient(config, cfg)
}
func createClient(config *GSSAPIConfig, cfg *krb5config.Config) (KerberosClient, error) {
var client *krb5client.Client
if config.AuthType == KRB5_KEYTAB_AUTH {
kt, err := keytab.Load(config.KeyTabPath)
if err != nil {
return nil, err
}
client = krb5client.NewClientWithKeytab(config.Username, config.Realm, kt, cfg)
} else {
client = krb5client.NewClientWithPassword(config.Username,
config.Realm, config.Password, cfg)
}
return &KerberosGoKrb5Client{*client}, nil
}
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