r12863: As lha suggested to me a while back, it appears that the

gsskrb5_get_initiator_subkey() routine is bougs.  We can indeed use
gss_krb5_get_subkey().

This is fortunate, as there was a segfault bug in 'initiator' version.

Andrew Bartlett

source/auth/gensec/gensec_gssapi.c

@@ -734,22 +734,21 @@ static NTSTATUS gensec_gssapi_session_key(struct gensec_security *gensec_securit
 	if ((gensec_gssapi_state->gss_oid->length == gss_mech_krb5->length)
 	    && (memcmp(gensec_gssapi_state->gss_oid->elements, gss_mech_krb5->elements, 
 		       gensec_gssapi_state->gss_oid->length) == 0)) {
-		OM_uint32 maj_stat, min_stat;
-		gss_buffer_desc skey;
+		OM_uint32 maj_stat;
+		krb5_keyblock *skey;
 		
-		maj_stat = gsskrb5_get_initiator_subkey(&min_stat, 
-							gensec_gssapi_state->gssapi_context, 
-							&skey);
+		maj_stat = gss_krb5_get_subkey(gensec_gssapi_state->gssapi_context, 
+					       &skey);
 		
 		if (maj_stat == 0) {
 			DEBUG(10, ("Got KRB5 session key of length %d\n",  
-				   (int)skey.length));
+				   (int)KRB5_KEY_LENGTH(skey)));
 			gensec_gssapi_state->session_key = data_blob_talloc(gensec_gssapi_state, 
-									    skey.value, skey.length);
+									    KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
 			*session_key = gensec_gssapi_state->session_key;
 			dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
 			
-			gss_release_buffer(&min_stat, &skey);
+			krb5_free_keyblock(gensec_gssapi_state->smb_krb5_context->krb5_context, skey);
 			return NT_STATUS_OK;
 		}
 		return NT_STATUS_NO_USER_SESSION_KEY;

source/auth/kerberos/kerberos-notes.txt

@@ -247,10 +247,6 @@ the kerberos libraries
 
  - DCE_STYLE
 
- - gsskrb5_get_initiator_subkey() (return the exact key that Samba3
-   has always asked for.  gsskrb5_get_subkey() might do what we need
-   anyway)
-
  - gsskrb5_acquire_creds() (takes keytab and/or ccache as input
    parameters, see keytab and state machine discussion)
 

source/heimdal/lib/gssapi/gssapi.h

@@ -815,10 +815,8 @@ gsskrb5_extract_authtime_from_sec_context(OM_uint32 *minor_status,
 					  gss_ctx_id_t context_handle,
 					  time_t *authtime);
 OM_uint32
-gsskrb5_get_initiator_subkey
-        (OM_uint32 * /*minor_status*/,
-	 const gss_ctx_id_t context_handle,
-	 gss_buffer_t /* subkey */);
+gss_krb5_get_subkey(const gss_ctx_id_t context_handle,
+		    struct EncryptionKey **key);
 
 #define GSS_C_KRB5_COMPAT_DES3_MIC 1
 

source/heimdal/lib/gssapi/gssapi_locl.h

@@ -226,9 +226,6 @@ gss_verify_mic_internal(OM_uint32 * minor_status,
 			gss_qop_t * qop_state,
 			char * type);
 
-OM_uint32
-gss_krb5_get_subkey(const gss_ctx_id_t context_handle,
-		    krb5_keyblock **key);
 
 krb5_error_code
 gss_address_to_krb5addr(OM_uint32 gss_addr_type,

source/heimdal/lib/gssapi/wrap.c

@@ -35,47 +35,6 @@
 
 RCSID("$Id: wrap.c,v 1.31 2005/01/05 02:52:12 lukeh Exp $");
 
-OM_uint32
-gsskrb5_get_initiator_subkey(OM_uint32 *minor_status,
-			     gss_ctx_id_t context_handle,
-			     gss_buffer_t key)
-{
-    krb5_error_code ret;
-    krb5_keyblock *skey = NULL;
-
-    HEIMDAL_MUTEX_lock(&context_handle->ctx_id_mutex);
-    if (context_handle->more_flags & LOCAL) {
-	ret = krb5_auth_con_getlocalsubkey(gssapi_krb5_context,
-					   context_handle->auth_context, 
-					   &skey);
-	if (ret) {
-		*minor_status = ret;
-		return GSS_KRB5_S_KG_NO_SUBKEY; /* XXX */
-	}
-	
-    } else {
-	ret = krb5_auth_con_getremotesubkey(gssapi_krb5_context,
-					    context_handle->auth_context, 
-					    &skey);
-	if (ret) {
-		*minor_status = ret;
-		return GSS_KRB5_S_KG_NO_SUBKEY; /* XXX */
-	}
-    
-    }
-    HEIMDAL_MUTEX_unlock(&context_handle->ctx_id_mutex);
-    key->length = skey->keyvalue.length;
-    key->value  = malloc (key->length);
-    if (!key->value) {
-	    krb5_free_keyblock(gssapi_krb5_context, skey);
-	    *minor_status = ENOMEM;
-	    return GSS_S_FAILURE;
-    }
-    memcpy(key->value, skey->keyvalue.data, key->length);
-    krb5_free_keyblock(gssapi_krb5_context, skey);
-    return 0;
-}
-
 OM_uint32
 gss_krb5_get_subkey(const gss_ctx_id_t context_handle,
 		    krb5_keyblock **key)