mirror of https://github.com/sudo-project/sudo.git
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2013-2015 Todd C. Miller <Todd.Miller@sudo.ws>
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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 USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <grp.h>
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#include <sudo_compat.h>
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#include <sudo_debug.h>
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#include <sudo_fatal.h>
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#include <sudo_gettext.h>
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#include <sudo_util.h>
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/*
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* Parse a comma-separated list of gids into an allocated array of GETGROUPS_T.
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* If a pointer to the base gid is specified, it is stored as the first element
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* in the array.
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* Returns the number of gids in the allocated array.
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*/
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int
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sudo_parse_gids_v1(const char *gidstr, const gid_t *basegid, GETGROUPS_T **gidsp)
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{
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int ngids = 0;
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GETGROUPS_T *gids;
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const char *cp = gidstr;
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const char *errstr;
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char *ep;
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debug_decl(sudo_parse_gids, SUDO_DEBUG_UTIL);
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/* Count groups. */
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if (*cp != '\0') {
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ngids++;
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do {
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if (*cp++ == ',')
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ngids++;
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} while (*cp != '\0');
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}
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/* Base gid is optional. */
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if (basegid != NULL)
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ngids++;
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/* Allocate and fill in array. */
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if (ngids != 0) {
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gids = reallocarray(NULL, (size_t)ngids, sizeof(GETGROUPS_T));
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if (gids == NULL) {
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sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
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debug_return_int(-1);
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}
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ngids = 0;
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if (basegid != NULL)
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gids[ngids++] = *basegid;
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cp = gidstr;
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do {
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gids[ngids] = (GETGROUPS_T) sudo_strtoidx(cp, ",", &ep, &errstr);
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if (errstr != NULL) {
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sudo_warnx(U_("%s: %s"), cp, U_(errstr));
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free(gids);
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debug_return_int(-1);
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}
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if (basegid == NULL || gids[ngids] != *basegid)
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ngids++;
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cp = ep + 1;
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} while (*ep != '\0');
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*gidsp = gids;
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}
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debug_return_int(ngids);
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}
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