d594243fbb
Add an additional NULL check condition in spw_free() and pw_free() to avoid freeing an already empty pointer. Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*
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* Copyright (c) 1990 - 1994, Julianne Frances Haugh
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2001 , Michał Moskal
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* Copyright (c) 2005 , Tomasz Kłoczko
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* Copyright (c) 2007 - 2013, Nicolas François
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* All rights reserved.
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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 copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 <shadow.h>
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#include <stdio.h>
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#include "shadowio.h"
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/*@null@*/ /*@only@*/struct spwd *__spw_dup (const struct spwd *spent)
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{
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struct spwd *sp;
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sp = (struct spwd *) malloc (sizeof *sp);
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if (NULL == sp) {
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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 (sp, 0, sizeof *sp);
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sp->sp_lstchg = spent->sp_lstchg;
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sp->sp_min = spent->sp_min;
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sp->sp_max = spent->sp_max;
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sp->sp_warn = spent->sp_warn;
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sp->sp_inact = spent->sp_inact;
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sp->sp_expire = spent->sp_expire;
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sp->sp_flag = spent->sp_flag;
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/*@-mustfreeonly@*/
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sp->sp_namp = strdup (spent->sp_namp);
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/*@=mustfreeonly@*/
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if (NULL == sp->sp_namp) {
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free(sp);
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return NULL;
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}
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/*@-mustfreeonly@*/
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sp->sp_pwdp = strdup (spent->sp_pwdp);
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/*@=mustfreeonly@*/
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if (NULL == sp->sp_pwdp) {
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free(sp->sp_namp);
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free(sp);
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return NULL;
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}
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return sp;
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}
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void spw_free (/*@out@*/ /*@only@*/struct spwd *spent)
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{
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if (spent != NULL) {
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free (spent->sp_namp);
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if (NULL != spent->sp_pwdp) {
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memzero (spent->sp_pwdp, strlen (spent->sp_pwdp));
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free (spent->sp_pwdp);
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}
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free (spent);
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}
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}
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