Fix gss_set_cred_option cred creation with no name

When creating a cred in the mechglue with gss_acquire_cred, the
mechanism is allowed to return no name from gss_inquire_cred.  But in
the analagous operation in gss_set_cred_option, that would result in
an error from gss_display_name.  Make the call to gss_display_name
conditional on the mechanism name being set.  Reported by Andrew
Bartlett.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@25037 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/gssapi/mechglue/g_set_cred_option.c b/src/lib/gssapi/mechglue/g_set_cred_option.c
index 897c84fe0227d2b7b2cf44c213583e3d4b269650..b530b1e053741eec1ffa8fdbb345c35477be281c 100644 (file)
--- a/src/lib/gssapi/mechglue/g_set_cred_option.c
+++ b/src/lib/gssapi/mechglue/g_set_cred_option.c
@@ -85,12 +85,14 @@ alloc_union_cred(OM_uint32 *minor_status,
     if (status != GSS_S_COMPLETE)
        goto cleanup;
 
-    status = mech->gss_display_name(minor_status,
-                                   mech_name,
-                                   &cred->auxinfo.name,
-                                   &cred->auxinfo.name_type);
-    if (status != GSS_S_COMPLETE)
-       goto cleanup;
+    if (mech_name != GSS_C_NO_NAME) {
+       status = mech->gss_display_name(minor_status,
+                                       mech_name,
+                                       &cred->auxinfo.name,
+                                       &cred->auxinfo.name_type);
+       if (status != GSS_S_COMPLETE)
+           goto cleanup;
+    }
 
     status = GSS_S_COMPLETE;
     *pcred = cred;