166 lines
4.5 KiB
C
166 lines
4.5 KiB
C
/* $NetBSD: pw_scan.c,v 1.12 2003/08/07 16:42:55 agc Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1987, 1993, 1994, 1995
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#include "compat_pwd.h"
|
|
#else
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: pw_scan.c,v 1.12 2003/08/07 16:42:55 agc Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#if defined(_LIBC)
|
|
#include "namespace.h"
|
|
#endif
|
|
#include <sys/types.h>
|
|
|
|
#include <assert.h>
|
|
#include <err.h>
|
|
#include <limits.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef _LIBC
|
|
#include "pw_private.h"
|
|
#endif
|
|
#endif /* !HAVE_CONFIG_H */
|
|
|
|
int
|
|
#ifdef _LIBC
|
|
__pw_scan(bp, pw, flags)
|
|
#else
|
|
pw_scan(bp, pw, flags)
|
|
#endif
|
|
char *bp;
|
|
struct passwd *pw;
|
|
int *flags;
|
|
{
|
|
unsigned long id;
|
|
int root, inflags;
|
|
char *ep;
|
|
const char *p, *sh;
|
|
|
|
_DIAGASSERT(bp != NULL);
|
|
_DIAGASSERT(pw != NULL);
|
|
|
|
inflags = 0;
|
|
if (flags != (int *)NULL) {
|
|
inflags = *flags;
|
|
*flags = 0;
|
|
}
|
|
|
|
if (!(pw->pw_name = strsep(&bp, ":"))) /* login */
|
|
goto fmt;
|
|
root = !strcmp(pw->pw_name, "root");
|
|
|
|
if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */
|
|
goto fmt;
|
|
|
|
if (!(p = strsep(&bp, ":"))) /* uid */
|
|
goto fmt;
|
|
id = strtoul(p, &ep, 10);
|
|
if (root && id) {
|
|
if (!(inflags & _PASSWORD_NOWARN))
|
|
warnx("root uid should be 0");
|
|
return (0);
|
|
}
|
|
if (id > UID_MAX || *ep != '\0') {
|
|
if (!(inflags & _PASSWORD_NOWARN))
|
|
warnx("invalid uid '%s'", p);
|
|
return (0);
|
|
}
|
|
pw->pw_uid = (uid_t)id;
|
|
if ((*p == '\0') && (flags != (int *)NULL))
|
|
*flags |= _PASSWORD_NOUID;
|
|
|
|
if (!(p = strsep(&bp, ":"))) /* gid */
|
|
goto fmt;
|
|
id = strtoul(p, &ep, 10);
|
|
if (id > GID_MAX || *ep != '\0') {
|
|
if (!(inflags & _PASSWORD_NOWARN))
|
|
warnx("invalid gid '%s'", p);
|
|
return (0);
|
|
}
|
|
pw->pw_gid = (gid_t)id;
|
|
if ((*p == '\0') && (flags != (int *)NULL))
|
|
*flags |= _PASSWORD_NOGID;
|
|
|
|
if (inflags & _PASSWORD_OLDFMT) {
|
|
pw->pw_class = "";
|
|
pw->pw_change = 0;
|
|
pw->pw_expire = 0;
|
|
*flags |= (_PASSWORD_NOCHG | _PASSWORD_NOEXP);
|
|
} else {
|
|
pw->pw_class = strsep(&bp, ":"); /* class */
|
|
if (!(p = strsep(&bp, ":"))) /* change */
|
|
goto fmt;
|
|
pw->pw_change = atol(p);
|
|
if ((*p == '\0') && (flags != (int *)NULL))
|
|
*flags |= _PASSWORD_NOCHG;
|
|
if (!(p = strsep(&bp, ":"))) /* expire */
|
|
goto fmt;
|
|
pw->pw_expire = atol(p);
|
|
if ((*p == '\0') && (flags != (int *)NULL))
|
|
*flags |= _PASSWORD_NOEXP;
|
|
}
|
|
pw->pw_gecos = strsep(&bp, ":"); /* gecos */
|
|
pw->pw_dir = strsep(&bp, ":"); /* directory */
|
|
if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */
|
|
goto fmt;
|
|
|
|
#if !HAVE_CONFIG_H
|
|
p = pw->pw_shell;
|
|
if (root && *p) /* empty == /bin/sh */
|
|
for (setusershell();;) {
|
|
if (!(sh = getusershell())) {
|
|
if (!(inflags & _PASSWORD_NOWARN))
|
|
warnx("warning, unknown root shell");
|
|
break;
|
|
}
|
|
if (!strcmp(p, sh))
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
if ((p = strsep(&bp, ":")) != NULL) { /* too many */
|
|
fmt:
|
|
if (!(inflags & _PASSWORD_NOWARN))
|
|
warnx("corrupted entry");
|
|
return (0);
|
|
}
|
|
|
|
return (1);
|
|
}
|