PAM_OLDAUTHTOK
if (i == PAM_AUTHTOK || i == PAM_OLDAUTHTOK) {
case PAM_OLDAUTHTOK:
case PAM_OLDAUTHTOK:
case PAM_OLDAUTHTOK:
((item_type == PAM_AUTHTOK || item_type == PAM_OLDAUTHTOK))) {
case PAM_OLDAUTHTOK:
(void) pam_get_item(pamh, PAM_OLDAUTHTOK, (const void **)&opwbuf);
(void) pam_set_item(pamh, PAM_OLDAUTHTOK, NULL);
res = pam_get_item(pamh, PAM_OLDAUTHTOK, (const void **)&authtok);
res = pam_set_item(pamh, PAM_OLDAUTHTOK,
res = pam_get_item(pamh, PAM_OLDAUTHTOK, (const void **)&oldpw);
(void) pam_get_item(pamh, PAM_OLDAUTHTOK, (const void **)&oldpass);