116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/* $NetBSD: pw_dup.c,v 1.1 2003/09/09 22:01:56 itojun Exp $ */
|
|
/* $OpenBSD: pw_dup.c,v 1.5 2003/06/17 21:56:23 millert Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2000, 2002 Todd C. Miller <Todd.Miller@courtesan.com>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* Sponsored in part by the Defense Advanced Research Projects
|
|
* Agency (DARPA) and Air Force Research Laboratory, Air Force
|
|
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static const char rcsid[] = "$OpenBSD: pw_dup.c,v 1.5 2003/06/17 21:56:23 millert Exp $";
|
|
#else
|
|
__RCSID("$NetBSD: pw_dup.c,v 1.1 2003/09/09 22:01:56 itojun Exp $");
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <pwd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
struct passwd *
|
|
pw_dup(const struct passwd *pw)
|
|
{
|
|
char *cp;
|
|
size_t nsize, psize, csize, gsize, dsize, ssize, total;
|
|
struct passwd *newpw;
|
|
|
|
/* Allocate in one big chunk for easy freeing */
|
|
total = sizeof(struct passwd);
|
|
if (pw->pw_name) {
|
|
nsize = strlen(pw->pw_name) + 1;
|
|
total += nsize;
|
|
}
|
|
if (pw->pw_passwd) {
|
|
psize = strlen(pw->pw_passwd) + 1;
|
|
total += psize;
|
|
}
|
|
if (pw->pw_class) {
|
|
csize = strlen(pw->pw_class) + 1;
|
|
total += csize;
|
|
}
|
|
if (pw->pw_gecos) {
|
|
gsize = strlen(pw->pw_gecos) + 1;
|
|
total += gsize;
|
|
}
|
|
if (pw->pw_dir) {
|
|
dsize = strlen(pw->pw_dir) + 1;
|
|
total += dsize;
|
|
}
|
|
if (pw->pw_shell) {
|
|
ssize = strlen(pw->pw_shell) + 1;
|
|
total += ssize;
|
|
}
|
|
if ((cp = malloc(total)) == NULL)
|
|
return (NULL);
|
|
newpw = (struct passwd *)(void *)cp;
|
|
|
|
/*
|
|
* Copy in passwd contents and make strings relative to space
|
|
* at the end of the buffer.
|
|
*/
|
|
(void)memcpy(newpw, pw, sizeof(struct passwd));
|
|
cp += sizeof(struct passwd);
|
|
if (pw->pw_name) {
|
|
(void)memcpy(cp, pw->pw_name, nsize);
|
|
newpw->pw_name = cp;
|
|
cp += nsize;
|
|
}
|
|
if (pw->pw_passwd) {
|
|
(void)memcpy(cp, pw->pw_passwd, psize);
|
|
newpw->pw_passwd = cp;
|
|
cp += psize;
|
|
}
|
|
if (pw->pw_class) {
|
|
(void)memcpy(cp, pw->pw_class, csize);
|
|
newpw->pw_class = cp;
|
|
cp += csize;
|
|
}
|
|
if (pw->pw_gecos) {
|
|
(void)memcpy(cp, pw->pw_gecos, gsize);
|
|
newpw->pw_gecos = cp;
|
|
cp += gsize;
|
|
}
|
|
if (pw->pw_dir) {
|
|
(void)memcpy(cp, pw->pw_dir, dsize);
|
|
newpw->pw_dir = cp;
|
|
cp += dsize;
|
|
}
|
|
if (pw->pw_shell) {
|
|
(void)memcpy(cp, pw->pw_shell, ssize);
|
|
newpw->pw_shell = cp;
|
|
cp += ssize;
|
|
}
|
|
|
|
return (newpw);
|
|
}
|