+ char *resp[1], *name, *info, **prompts;
+ u_int i, numprompts, *echo_on;
+ int authenticated = 0;
+
+ if (device == NULL)
+ return 0;
+ if (authctxt->kbdintctxt == NULL)
+ return 0;
+ resp[0] = (char *)response;
+ switch (device->respond(authctxt->kbdintctxt, 1, resp)) {
+ case 0: /* Success */
+ authenticated = 1;
+ break;
+ case 1: /* Postponed - retry with empty query for PAM */
+ if ((device->query(authctxt->kbdintctxt, &name, &info,
+ &numprompts, &prompts, &echo_on)) != 0)
+ break;
+ if (numprompts == 0 &&
+ device->respond(authctxt->kbdintctxt, 0, resp) == 0)
+ authenticated = 1;
+
+ for (i = 0; i < numprompts; i++)
+ xfree(prompts[i]);
+ xfree(prompts);
+ xfree(name);
+ xfree(echo_on);
+ xfree(info);
+ break;
+ }
+ device->free_ctx(authctxt->kbdintctxt);
+ authctxt->kbdintctxt = NULL;
+ return authenticated;