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58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*
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* Copyright (c) 2022 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <unistd.h>
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#ifdef HAVE_UCRED_H
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#include <ucred.h>
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#endif
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#include "compat.h"
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int
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getpeereid(int s, uid_t *uid, gid_t *gid)
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{
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#ifdef HAVE_SO_PEERCRED
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struct ucred uc;
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int len = sizeof uc;
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if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &uc, &len) == -1)
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return (-1);
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*uid = uc.uid;
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*gid = uc.gid;
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return (0);
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#elif defined(HAVE_GETPEERUCRED)
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ucred_t *ucred = NULL;
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if (getpeerucred(s, &ucred) == -1)
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return (-1);
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if ((*uid = ucred_geteuid(ucred)) == -1)
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return (-1);
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if ((*gid = ucred_getrgid(ucred)) == -1)
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return (-1);
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ucred_free(ucred);
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return (0);
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#else
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*uid = geteuid();
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*gid = getegid();
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return (0);
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#endif
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}
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