134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
/* $NetBSD: creds.c,v 1.3 2006/10/23 01:23:42 christos Exp $ */
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/*
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* Copyright (c) 2006 Antti Kantee. All Rights Reserved.
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*
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* Development of this software was supported by the Ulla Tuominen Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if !defined(lint)
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__RCSID("$NetBSD: creds.c,v 1.3 2006/10/23 01:23:42 christos Exp $");
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#endif /* !lint */
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/*
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* Interface for dealing with credits.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <puffs.h>
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#include <errno.h>
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#include <string.h>
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#define UUCCRED(a) (a->pcr_type == PUFFCRED_TYPE_UUC)
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#define INTCRED(a) (a->pcr_type == PUFFCRED_TYPE_INTERNAL)
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int
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puffs_cred_getuid(const struct puffs_cred *pcr, uid_t *ruid)
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{
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if (!UUCCRED(pcr))
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return EINVAL;
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*ruid = pcr->pcr_uuc.cr_uid;
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return 0;
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}
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int
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puffs_cred_getgid(const struct puffs_cred *pcr, gid_t *rgid)
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{
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if (!UUCCRED(pcr))
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return EINVAL;
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*rgid = pcr->pcr_uuc.cr_gid;
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return 0;
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}
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int
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puffs_cred_getgroups(const struct puffs_cred *pcr, gid_t *rgids, short *ngids)
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{
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size_t ncopy;
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if (!UUCCRED(pcr))
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return EINVAL;
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ncopy = MIN(*ngids, NGROUPS);
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(void)memcpy(rgids, pcr->pcr_uuc.cr_groups, ncopy);
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*ngids = (short)ncopy;
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return 0;
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}
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int
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puffs_cred_isuid(const struct puffs_cred *pcr, uid_t uid)
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{
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return UUCCRED(pcr) && pcr->pcr_uuc.cr_uid == uid;
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}
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int
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puffs_cred_hasgroup(const struct puffs_cred *pcr, gid_t gid)
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{
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short i;
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if (!UUCCRED(pcr))
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return 0;
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if (pcr->pcr_uuc.cr_gid == gid)
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return 1;
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for (i = 0; i < pcr->pcr_uuc.cr_ngroups; i++)
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if (pcr->pcr_uuc.cr_groups[i] == gid)
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return 1;
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return 0;
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}
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int
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puffs_cred_iskernel(const struct puffs_cred *pcr)
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{
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return INTCRED(pcr) && pcr->pcr_internal == PUFFCRED_CRED_NOCRED;
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}
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int
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puffs_cred_isfs(const struct puffs_cred *pcr)
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{
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return INTCRED(pcr) && pcr->pcr_internal == PUFFCRED_CRED_FSCRED;
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}
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int
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puffs_cred_isjuggernaut(const struct puffs_cred *pcr)
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{
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return puffs_cred_isuid(pcr, 0) || puffs_cred_iskernel(pcr)
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|| puffs_cred_isfs(pcr);
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}
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