/* $OpenBSD: duid.c,v 1.2 2012/07/09 14:26:40 nicm Exp $ */ /* * Copyright (c) 2010 Joel Sing <jsing@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <string.h> #include "util.h" int isduid(const char *duid, int dflags) { char c; int i; /* Basic format check. */ if (!((strlen(duid) == 16 && (dflags & OPENDEV_PART)) || (strlen(duid) == 18 && duid[16] == '.'))) return 0; /* Check UID. */ for (i = 0; i < 16; i++) { c = duid[i]; if ((c < '0' || c > '9') && (c < 'a' || c > 'f')) return 0; } return 1; }