Use a genereic mechanism to block calls to tokens

And use this mechanism to reimplement the no_operation_state quirk.

Signed-off-by: Simo Sorce <[email protected]>

src/digests.c

@@ -191,13 +191,8 @@ static void *p11prov_digest_dupctx(void *ctx)
     dctx->session = NULL;
 
     /* NOTE: most tokens will probably return errors trying to do this on digest
-     * sessions. If the configuration indicates that GetOperationState will fail
-     * we don't even try to duplicate the context. */
-
-    if (p11prov_ctx_no_operation_state(dctx->provctx)) {
-        goto done;
-    }
-
+     * sessions. If GetOperationState fails we don't even try to duplicate the
+     * context. */
     ret = p11prov_GetOperationState(dctx->provctx, sess, NULL_PTR, &state_len);
     if (ret != CKR_OK) {
         goto done;