96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
package client
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
|
|
"github.com/jcmturner/gokrb5/v8/kadmin"
|
|
"github.com/jcmturner/gokrb5/v8/messages"
|
|
)
|
|
|
|
// Kpasswd server response codes.
|
|
const (
|
|
KRB5_KPASSWD_SUCCESS = 0
|
|
KRB5_KPASSWD_MALFORMED = 1
|
|
KRB5_KPASSWD_HARDERROR = 2
|
|
KRB5_KPASSWD_AUTHERROR = 3
|
|
KRB5_KPASSWD_SOFTERROR = 4
|
|
KRB5_KPASSWD_ACCESSDENIED = 5
|
|
KRB5_KPASSWD_BAD_VERSION = 6
|
|
KRB5_KPASSWD_INITIAL_FLAG_NEEDED = 7
|
|
)
|
|
|
|
// ChangePasswd changes the password of the client to the value provided.
|
|
func (cl *Client) ChangePasswd(newPasswd string) (bool, error) {
|
|
ASReq, err := messages.NewASReqForChgPasswd(cl.Credentials.Domain(), cl.Config, cl.Credentials.CName())
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
ASRep, err := cl.ASExchange(cl.Credentials.Domain(), ASReq, 0)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
msg, key, err := kadmin.ChangePasswdMsg(cl.Credentials.CName(), cl.Credentials.Domain(), newPasswd, ASRep.Ticket, ASRep.DecryptedEncPart.Key)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
r, err := cl.sendToKPasswd(msg)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
err = r.Decrypt(key)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
if r.ResultCode != KRB5_KPASSWD_SUCCESS {
|
|
return false, fmt.Errorf("error response from kadmin: code: %d; result: %s; krberror: %v", r.ResultCode, r.Result, r.KRBError)
|
|
}
|
|
cl.Credentials.WithPassword(newPasswd)
|
|
return true, nil
|
|
}
|
|
|
|
func (cl *Client) sendToKPasswd(msg kadmin.Request) (r kadmin.Reply, err error) {
|
|
_, kps, err := cl.Config.GetKpasswdServers(cl.Credentials.Domain(), true)
|
|
if err != nil {
|
|
return
|
|
}
|
|
addr := kps[1]
|
|
b, err := msg.Marshal()
|
|
if err != nil {
|
|
return
|
|
}
|
|
if len(b) <= cl.Config.LibDefaults.UDPPreferenceLimit {
|
|
return cl.sendKPasswdUDP(b, addr)
|
|
}
|
|
return cl.sendKPasswdTCP(b, addr)
|
|
}
|
|
|
|
func (cl *Client) sendKPasswdTCP(b []byte, kadmindAddr string) (r kadmin.Reply, err error) {
|
|
tcpAddr, err := net.ResolveTCPAddr("tcp", kadmindAddr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
conn, err := net.DialTCP("tcp", nil, tcpAddr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
rb, err := cl.sendTCP(conn, b)
|
|
err = r.Unmarshal(rb)
|
|
return
|
|
}
|
|
|
|
func (cl *Client) sendKPasswdUDP(b []byte, kadmindAddr string) (r kadmin.Reply, err error) {
|
|
udpAddr, err := net.ResolveUDPAddr("udp", kadmindAddr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
conn, err := net.DialUDP("udp", nil, udpAddr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
rb, err := cl.sendUDP(conn, b)
|
|
err = r.Unmarshal(rb)
|
|
return
|
|
}
|