This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
240 lines
5.5 KiB
C
240 lines
5.5 KiB
C
/* $NetBSD: pw_scan.c,v 1.22 2009/01/29 10:41:39 enami Exp $ */
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/*
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* Copyright (c) 1987, 1993, 1994, 1995
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* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#include "compat_pwd.h"
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#else
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: pw_scan.c,v 1.22 2009/01/29 10:41:39 enami Exp $");
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#endif /* LIBC_SCCS and not lint */
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#if defined(_LIBC)
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#include "namespace.h"
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#endif
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#include <sys/types.h>
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#include <assert.h>
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#include <err.h>
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#include <limits.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#ifdef _LIBC
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#include "pw_private.h"
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#endif
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#endif /* ! HAVE_NBTOOL_CONFIG_H */
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static int
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gettime(long long *res, const char *p, int *flags, int dowarn, int flag)
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{
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long long l;
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char *ep;
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const char *vp;
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if (*p == '\0') {
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*flags |= flag;
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*res = 0;
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return 1;
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}
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l = strtoll(p, &ep, 0);
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if (p == ep || *ep != '\0') {
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vp = "Invalid number";
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goto done;
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}
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if (errno == ERANGE && (l == LLONG_MAX || l == LLONG_MIN)) {
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vp = strerror(errno);
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goto done;
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}
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*res = l;
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return 1;
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done:
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if (dowarn) {
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warnx("%s `%s' for %s time", vp, p,
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flag == _PASSWORD_NOEXP ? "expiration" : "change");
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}
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return 0;
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}
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static int
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getid(unsigned long *res, const char *p, int *flags, int dowarn, int flag)
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{
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unsigned long ul;
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char *ep;
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if (*p == '\0') {
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*flags |= flag;
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*res = 0;
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return 1;
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}
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ul = strtoul(p, &ep, 0);
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if (p == ep || *ep != '\0') {
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ep = __UNCONST("Invalid number");
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goto done;
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}
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if (errno == ERANGE && ul == ULONG_MAX) {
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ep = strerror(errno);
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goto done;
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}
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if (ul > *res) {
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ep = strerror(ERANGE);
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goto done;
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}
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*res = ul;
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return 1;
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done:
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if (dowarn)
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warnx("%s %s `%s'", ep,
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flag == _PASSWORD_NOUID ? "uid" : "gid", p);
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return 0;
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}
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int
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#ifdef _LIBC
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__pw_scan(char *bp, struct passwd *pw, int *flags)
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#else
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pw_scan( char *bp, struct passwd *pw, int *flags)
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#endif
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{
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unsigned long id;
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long long ti;
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int root, inflags;
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int dowarn;
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const char *p, *sh;
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_DIAGASSERT(bp != NULL);
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_DIAGASSERT(pw != NULL);
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if (flags) {
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inflags = *flags;
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*flags = 0;
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} else {
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inflags = 0;
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flags = &inflags;
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}
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dowarn = !(inflags & _PASSWORD_NOWARN);
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if (!(pw->pw_name = strsep(&bp, ":"))) /* login */
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goto fmt;
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if (strlen(pw->pw_name) > (LOGIN_NAME_MAX - 1)) {
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if (dowarn)
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warnx("username too long, `%s' > %d", pw->pw_name,
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LOGIN_NAME_MAX - 1);
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return 0;
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}
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root = !strcmp(pw->pw_name, "root");
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if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */
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goto fmt;
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if (!(p = strsep(&bp, ":"))) /* uid */
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goto fmt;
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id = UID_MAX;
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if (!getid(&id, p, flags, dowarn, _PASSWORD_NOUID))
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return 0;
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if (root && id) {
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if (dowarn)
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warnx("root uid should be 0");
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return 0;
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}
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pw->pw_uid = (uid_t)id;
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if (!(p = strsep(&bp, ":"))) /* gid */
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goto fmt;
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id = GID_MAX;
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if (!getid(&id, p, flags, dowarn, _PASSWORD_NOGID))
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return 0;
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pw->pw_gid = (gid_t)id;
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if (inflags & _PASSWORD_OLDFMT) {
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pw->pw_class = __UNCONST("");
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pw->pw_change = 0;
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pw->pw_expire = 0;
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*flags |= (_PASSWORD_NOCHG | _PASSWORD_NOEXP);
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} else {
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pw->pw_class = strsep(&bp, ":"); /* class */
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if (!(p = strsep(&bp, ":"))) /* change */
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goto fmt;
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if (!gettime(&ti, p, flags, dowarn, _PASSWORD_NOCHG))
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return 0;
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pw->pw_change = ti;
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if (!(p = strsep(&bp, ":"))) /* expire */
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goto fmt;
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if (!gettime(&ti, p, flags, dowarn, _PASSWORD_NOEXP))
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return 0;
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pw->pw_expire = ti;
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}
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pw->pw_gecos = strsep(&bp, ":"); /* gecos */
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pw->pw_dir = strsep(&bp, ":"); /* directory */
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if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */
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goto fmt;
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#if ! HAVE_NBTOOL_CONFIG_H
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p = pw->pw_shell;
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if (root && *p) /* empty == /bin/sh */
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for (setusershell();;) {
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if (!(sh = getusershell())) {
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if (dowarn)
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warnx("warning, unknown root shell");
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break;
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}
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if (!strcmp(p, sh))
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break;
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}
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#endif
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if ((p = strsep(&bp, ":")) != NULL) { /* too many */
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fmt:
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if (dowarn)
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warnx("corrupted entry");
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return 0;
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}
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return 1;
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}
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