81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
// SPDX-FileCopyrightText: 1989-1994, Julianne Frances Haugh
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// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
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// SPDX-FileCopyrightText: 2001-2006, Tomasz Kłoczko
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// SPDX-FileCopyrightText: 2007-2009, Nicolas François
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// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#include <config.h>
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#if !defined(USE_PAM)
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#include "prototypes.h"
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#include "defines.h"
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#include <errno.h>
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#include <grp.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include "alloc/reallocf.h"
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#include "search/l/lsearch.h"
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#include "shadow/grp/agetgroups.h"
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#include "shadowlog.h"
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#include "string/strchr/strchrscnt.h"
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/*
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* Add groups with names from LIST (separated by commas or colons)
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* to the supplementary group set. Silently ignore groups which are
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* already there.
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*/
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int
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add_groups(const char *list)
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{
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char *g, *p, *dup;
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FILE *shadow_logfd = log_get_logfd();
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gid_t *gids;
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size_t n;
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gids = agetgroups(&n);
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if (gids == NULL)
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return -1;
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gids = REALLOCF(gids, n + strchrscnt(list, ",:") + 1, gid_t);
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if (gids == NULL)
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return -1;
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p = dup = strdup(list);
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if (dup == NULL)
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goto free_gids;
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while (NULL != (g = strsep(&p, ",:"))) {
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struct group *grp;
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grp = getgrnam(g); /* local, no need for xgetgrnam */
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if (NULL == grp) {
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fprintf(shadow_logfd, _("Warning: unknown group %s\n"), g);
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continue;
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}
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LSEARCH(&grp->gr_gid, gids, &n);
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}
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free(dup);
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if (setgroups(n, gids) == -1) {
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fprintf(shadow_logfd, "setgroups: %s\n", strerror(errno));
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goto free_gids;
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}
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free(gids);
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return 0;
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free_gids:
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free(gids);
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return -1;
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}
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#else /* !USE_PAM */
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extern int ISO_C_forbids_an_empty_translation_unit;
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#endif /* !USE_PAM */
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