From 97c26c1924b076ef23ebe4381558e8aa025712b2 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:54:37 +0200 Subject: Adding upstream version 1:4.13+dfsg1. Signed-off-by: Daniel Baumann --- lib/groupmem.c | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 lib/groupmem.c (limited to 'lib/groupmem.c') diff --git a/lib/groupmem.c b/lib/groupmem.c new file mode 100644 index 0000000..c858b72 --- /dev/null +++ b/lib/groupmem.c @@ -0,0 +1,118 @@ +/* + * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh + * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz + * SPDX-FileCopyrightText: 2001 , Michał Moskal + * SPDX-FileCopyrightText: 2005 , Tomasz Kłoczko + * SPDX-FileCopyrightText: 2007 - 2013, Nicolas François + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include + +#ident "$Id$" + +#include "prototypes.h" +#include "defines.h" +#include "groupio.h" + +/*@null@*/ /*@only@*/struct group *__gr_dup (const struct group *grent) +{ + struct group *gr; + int i; + + gr = (struct group *) malloc (sizeof *gr); + if (NULL == gr) { + return NULL; + } + /* The libc might define other fields. They won't be copied. */ + memset (gr, 0, sizeof *gr); + gr->gr_gid = grent->gr_gid; + /*@-mustfreeonly@*/ + gr->gr_name = strdup (grent->gr_name); + /*@=mustfreeonly@*/ + if (NULL == gr->gr_name) { + gr_free(gr); + return NULL; + } + /*@-mustfreeonly@*/ + gr->gr_passwd = strdup (grent->gr_passwd); + /*@=mustfreeonly@*/ + if (NULL == gr->gr_passwd) { + gr_free(gr); + return NULL; + } + + for (i = 0; grent->gr_mem[i]; i++); + + /*@-mustfreeonly@*/ + gr->gr_mem = (char **) malloc ((i + 1) * sizeof (char *)); + /*@=mustfreeonly@*/ + if (NULL == gr->gr_mem) { + gr_free(gr); + return NULL; + } + for (i = 0; grent->gr_mem[i]; i++) { + gr->gr_mem[i] = strdup (grent->gr_mem[i]); + if (NULL == gr->gr_mem[i]) { + gr_free(gr); + return NULL; + } + } + gr->gr_mem[i] = NULL; + + return gr; +} + +void gr_free_members (struct group *grent) +{ + if (NULL != grent->gr_mem) { + size_t i; + for (i = 0; NULL != grent->gr_mem[i]; i++) { + free (grent->gr_mem[i]); + } + free (grent->gr_mem); + grent->gr_mem = NULL; + } +} + +void gr_free (/*@out@*/ /*@only@*/struct group *grent) +{ + free (grent->gr_name); + if (NULL != grent->gr_passwd) { + strzero (grent->gr_passwd); + free (grent->gr_passwd); + } + gr_free_members(grent); + free (grent); +} + +bool gr_append_member(struct group *grp, char *member) +{ + int i; + + if (NULL == grp->gr_mem || grp->gr_mem[0] == NULL) { + grp->gr_mem = (char **)malloc(2 * sizeof(char *)); + if (!grp->gr_mem) { + return false; + } + grp->gr_mem[0] = strdup(member); + if (!grp->gr_mem[0]) { + return false; + } + grp->gr_mem[1] = NULL; + return true; + } + + for (i = 0; grp->gr_mem[i]; i++) ; + grp->gr_mem = realloc(grp->gr_mem, (i + 2) * sizeof(char *)); + if (NULL == grp->gr_mem) { + return false; + } + grp->gr_mem[i] = strdup(member); + if (NULL == grp->gr_mem[i]) { + return false; + } + grp->gr_mem[i + 1] = NULL; + return true; +} -- cgit v1.2.3