e74bfe2c75
Replace `memzero (s, strlen(s))` with just the internal wrapper `strzero (s)` where the underlying allocated size is not known.
119 lines
2.4 KiB
C
119 lines
2.4 KiB
C
/*
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* SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
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* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
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* SPDX-FileCopyrightText: 2001 , Michał Moskal
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* SPDX-FileCopyrightText: 2005 , Tomasz Kłoczko
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* SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <config.h>
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#ident "$Id$"
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#include "prototypes.h"
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#include "defines.h"
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#include "groupio.h"
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/*@null@*/ /*@only@*/struct group *__gr_dup (const struct group *grent)
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{
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struct group *gr;
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int i;
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gr = (struct group *) malloc (sizeof *gr);
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if (NULL == gr) {
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return NULL;
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}
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/* The libc might define other fields. They won't be copied. */
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memset (gr, 0, sizeof *gr);
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gr->gr_gid = grent->gr_gid;
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/*@-mustfreeonly@*/
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gr->gr_name = strdup (grent->gr_name);
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/*@=mustfreeonly@*/
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if (NULL == gr->gr_name) {
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gr_free(gr);
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return NULL;
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}
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/*@-mustfreeonly@*/
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gr->gr_passwd = strdup (grent->gr_passwd);
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/*@=mustfreeonly@*/
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if (NULL == gr->gr_passwd) {
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gr_free(gr);
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return NULL;
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}
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for (i = 0; grent->gr_mem[i]; i++);
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/*@-mustfreeonly@*/
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gr->gr_mem = (char **) malloc ((i + 1) * sizeof (char *));
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/*@=mustfreeonly@*/
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if (NULL == gr->gr_mem) {
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gr_free(gr);
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return NULL;
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}
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for (i = 0; grent->gr_mem[i]; i++) {
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gr->gr_mem[i] = strdup (grent->gr_mem[i]);
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if (NULL == gr->gr_mem[i]) {
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gr_free(gr);
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return NULL;
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}
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}
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gr->gr_mem[i] = NULL;
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return gr;
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}
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void gr_free_members (struct group *grent)
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{
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if (NULL != grent->gr_mem) {
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size_t i;
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for (i = 0; NULL != grent->gr_mem[i]; i++) {
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free (grent->gr_mem[i]);
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}
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free (grent->gr_mem);
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grent->gr_mem = NULL;
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}
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}
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void gr_free (/*@out@*/ /*@only@*/struct group *grent)
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{
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free (grent->gr_name);
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if (NULL != grent->gr_passwd) {
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strzero (grent->gr_passwd);
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free (grent->gr_passwd);
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}
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gr_free_members(grent);
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free (grent);
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}
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bool gr_append_member(struct group *grp, char *member)
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{
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int i;
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if (NULL == grp->gr_mem || grp->gr_mem[0] == NULL) {
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grp->gr_mem = (char **)malloc(2 * sizeof(char *));
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if (!grp->gr_mem) {
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return false;
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}
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grp->gr_mem[0] = strdup(member);
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if (!grp->gr_mem[0]) {
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return false;
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}
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grp->gr_mem[1] = NULL;
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return true;
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}
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for (i = 0; grp->gr_mem[i]; i++) ;
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grp->gr_mem = realloc(grp->gr_mem, (i + 2) * sizeof(char *));
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if (NULL == grp->gr_mem) {
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return false;
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}
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grp->gr_mem[i] = strdup(member);
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if (NULL == grp->gr_mem[i]) {
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return false;
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}
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grp->gr_mem[i + 1] = NULL;
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return true;
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}
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