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http.go
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http.go
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package client
import (
"encoding/base64"
"fmt"
"net/http"
"strings"
"gopkg.in/jcmturner/gokrb5.v4/credentials"
"gopkg.in/jcmturner/gokrb5.v4/gssapi"
"gopkg.in/jcmturner/gokrb5.v4/krberror"
"gopkg.in/jcmturner/gokrb5.v4/messages"
"gopkg.in/jcmturner/gokrb5.v4/types"
)
// SetSPNEGOHeader gets the service ticket and sets it as the SPNEGO authorization header on HTTP request object.
// To auto generate the SPN from the request object pass a null string "".
func (cl *Client) SetSPNEGOHeader(r *http.Request, spn string) error {
if spn == "" {
spn = "HTTP/" + strings.SplitN(r.Host, ":", 2)[0]
}
tkt, skey, err := cl.GetServiceTicket(spn)
if err != nil {
return fmt.Errorf("could not get service ticket: %v", err)
}
err = SetSPNEGOHeader(*cl.Credentials, tkt, skey, r)
if err != nil {
return err
}
return nil
}
// SetSPNEGOHeader sets the provided ticket as the SPNEGO authorization header on HTTP request object.
func SetSPNEGOHeader(creds credentials.Credentials, tkt messages.Ticket, sessionKey types.EncryptionKey, r *http.Request) error {
SPNEGOToken, err := gssapi.GetSPNEGOKrbNegTokenInit(creds, tkt, sessionKey)
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "could not generate SPNEGO negotiation token")
}
nb, err := SPNEGOToken.Marshal()
if err != nil {
return krberror.Errorf(err, krberror.EncodingError, "could not marshal SPNEGO")
}
hs := "Negotiate " + base64.StdEncoding.EncodeToString(nb)
r.Header.Set("Authorization", hs)
return nil
}