968 lines
22 KiB
C
968 lines
22 KiB
C
/* $NetBSD: getpwent.c,v 1.25 1998/02/10 03:56:33 mrg Exp $ */
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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* Portions Copyright (c) 1994, 1995, Jason Downs. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)getpwent.c 8.2 (Berkeley) 4/27/95";
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#else
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__RCSID("$NetBSD: getpwent.c,v 1.25 1998/02/10 03:56:33 mrg Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <sys/param.h>
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#include <fcntl.h>
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#include <db.h>
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#include <syslog.h>
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#include <pwd.h>
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#include <utmp.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <netgroup.h>
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#ifdef YP
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#include <machine/param.h>
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#endif
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#ifdef __weak_alias
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__weak_alias(endpwent,_endpwent);
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__weak_alias(getpwent,_getpwent);
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__weak_alias(getpwnam,_getpwnam);
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__weak_alias(getpwuid,_getpwuid);
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__weak_alias(setpassent,_setpassent);
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__weak_alias(setpwent,_setpwent);
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#endif
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/*
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* The lookup techniques and data extraction code here must be kept
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* in sync with that in `pwd_mkdb'.
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*/
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static struct passwd _pw_passwd; /* password structure */
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static DB *_pw_db; /* password database */
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static int _pw_keynum; /* key counter */
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static int _pw_stayopen; /* keep fd's open */
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static int _pw_flags; /* password flags */
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static int __hashpw __P((DBT *));
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static int __initdb __P((void));
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const char __yp_token[] = "__YP!"; /* Let pwd_mkdb pull this in. */
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#ifdef YP
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enum _ypmode { YPMODE_NONE, YPMODE_FULL, YPMODE_USER, YPMODE_NETGRP };
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static enum _ypmode __ypmode;
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static char *__ypcurrent, *__ypdomain;
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static int __ypcurrentlen;
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static struct passwd *__ypproto = (struct passwd *)NULL;
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static int __ypflags;
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static char line[1024];
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static long prbuf[1024 / sizeof(long)];
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static DB *__ypexclude = (DB *)NULL;
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static int __has_yppw __P((void));
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static int __ypexclude_add __P((const char *));
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static int __ypexclude_is __P((const char *));
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static void __ypproto_set __P((void));
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static int __ypparse __P((struct passwd *, char *));
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static int
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__ypexclude_add(name)
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const char *name;
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{
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DBT key, data;
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/* initialize the exclusion table if needed. */
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if(__ypexclude == (DB *)NULL) {
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__ypexclude = dbopen(NULL, O_RDWR, 600, DB_HASH, NULL);
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if(__ypexclude == (DB *)NULL)
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return(1);
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}
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/* set up the key */
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key.data = (char *)name;
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key.size = strlen(name);
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/* data is nothing. */
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data.data = NULL;
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data.size = 0;
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/* store it */
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if((__ypexclude->put)(__ypexclude, &key, &data, 0) == -1)
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return(1);
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return(0);
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}
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static int
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__ypexclude_is(name)
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const char *name;
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{
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DBT key, data;
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if(__ypexclude == (DB *)NULL)
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return(0); /* nothing excluded */
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/* set up the key */
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key.data = (char *)name;
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key.size = strlen(name);
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if((__ypexclude->get)(__ypexclude, &key, &data, 0) == 0)
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return(1); /* excluded */
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return(0);
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}
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static void
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__ypproto_set()
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{
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char *ptr;
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struct passwd *pw = &_pw_passwd;
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/* make this the new prototype */
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ptr = (char *)prbuf;
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/* first allocate the struct. */
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__ypproto = (struct passwd *)ptr;
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ptr += sizeof(struct passwd);
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/* name */
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if(pw->pw_name && (pw->pw_name)[0]) {
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ptr = (char *)ALIGN(ptr);
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bcopy(pw->pw_name, ptr, strlen(pw->pw_name) + 1);
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__ypproto->pw_name = ptr;
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ptr += (strlen(pw->pw_name) + 1);
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} else
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__ypproto->pw_name = (char *)NULL;
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/* password */
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if(pw->pw_passwd && (pw->pw_passwd)[0]) {
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ptr = (char *)ALIGN(ptr);
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bcopy(pw->pw_passwd, ptr, strlen(pw->pw_passwd) + 1);
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__ypproto->pw_passwd = ptr;
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ptr += (strlen(pw->pw_passwd) + 1);
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} else
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__ypproto->pw_passwd = (char *)NULL;
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/* uid */
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__ypproto->pw_uid = pw->pw_uid;
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/* gid */
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__ypproto->pw_gid = pw->pw_gid;
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/* change (ignored anyway) */
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__ypproto->pw_change = pw->pw_change;
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/* class (ignored anyway) */
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__ypproto->pw_class = "";
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/* gecos */
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if(pw->pw_gecos && (pw->pw_gecos)[0]) {
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ptr = (char *)ALIGN(ptr);
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bcopy(pw->pw_gecos, ptr, strlen(pw->pw_gecos) + 1);
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__ypproto->pw_gecos = ptr;
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ptr += (strlen(pw->pw_gecos) + 1);
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} else
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__ypproto->pw_gecos = (char *)NULL;
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/* dir */
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if(pw->pw_dir && (pw->pw_dir)[0]) {
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ptr = (char *)ALIGN(ptr);
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bcopy(pw->pw_dir, ptr, strlen(pw->pw_dir) + 1);
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__ypproto->pw_dir = ptr;
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ptr += (strlen(pw->pw_dir) + 1);
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} else
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__ypproto->pw_dir = (char *)NULL;
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/* shell */
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if(pw->pw_shell && (pw->pw_shell)[0]) {
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ptr = (char *)ALIGN(ptr);
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bcopy(pw->pw_shell, ptr, strlen(pw->pw_shell) + 1);
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__ypproto->pw_shell = ptr;
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ptr += (strlen(pw->pw_shell) + 1);
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} else
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__ypproto->pw_shell = (char *)NULL;
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/* expire (ignored anyway) */
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__ypproto->pw_expire = pw->pw_expire;
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/* flags */
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__ypflags = _pw_flags;
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}
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static int
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__ypparse(pw, s)
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struct passwd *pw;
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char *s;
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{
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char *bp, *cp, *ep;
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unsigned long id;
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/* since this is currently using strsep(), parse it first */
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bp = s;
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pw->pw_name = strsep(&bp, ":\n");
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pw->pw_passwd = strsep(&bp, ":\n");
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if (!(cp = strsep(&bp, ":\n")))
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return 1;
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id = strtoul(cp, &ep, 10);
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if (id > UID_MAX || *ep != '\0')
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return 1;
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pw->pw_uid = (uid_t)id;
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if (!(cp = strsep(&bp, ":\n")))
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return 1;
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id = strtoul(cp, &ep, 10);
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if (id > GID_MAX || *ep != '\0')
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return 1;
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pw->pw_gid = (gid_t)id;
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pw->pw_change = 0;
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pw->pw_class = "";
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pw->pw_gecos = strsep(&bp, ":\n");
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pw->pw_dir = strsep(&bp, ":\n");
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pw->pw_shell = strsep(&bp, ":\n");
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pw->pw_expire = 0;
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/* now let the prototype override, if set. */
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if(__ypproto != (struct passwd *)NULL) {
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#ifdef YP_OVERRIDE_PASSWD
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if(__ypproto->pw_passwd != (char *)NULL)
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pw->pw_passwd = __ypproto->pw_passwd;
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#endif
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if(!(__ypflags & _PASSWORD_NOUID))
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pw->pw_uid = __ypproto->pw_uid;
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if(!(__ypflags & _PASSWORD_NOGID))
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pw->pw_gid = __ypproto->pw_gid;
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if(__ypproto->pw_gecos != (char *)NULL)
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pw->pw_gecos = __ypproto->pw_gecos;
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if(__ypproto->pw_dir != (char *)NULL)
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pw->pw_dir = __ypproto->pw_dir;
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if(__ypproto->pw_shell != (char *)NULL)
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pw->pw_shell = __ypproto->pw_shell;
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}
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return 0;
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}
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#endif
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struct passwd *
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getpwent()
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{
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DBT key;
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char bf[sizeof(_pw_keynum) + 1];
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#ifdef YP
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static char *name = (char *)NULL;
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const char *user, *host, *dom;
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int has_yppw;
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#endif
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if (!_pw_db && !__initdb())
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return((struct passwd *)NULL);
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#ifdef YP
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has_yppw = __has_yppw();
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again:
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if(has_yppw && (__ypmode != YPMODE_NONE)) {
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char *key, *data;
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int keylen, datalen;
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int r, s;
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if(!__ypdomain) {
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if( _yp_check(&__ypdomain) == 0) {
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__ypmode = YPMODE_NONE;
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goto again;
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}
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}
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switch(__ypmode) {
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case YPMODE_FULL:
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data = NULL;
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if(__ypcurrent) {
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key = NULL;
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r = yp_next(__ypdomain, "passwd.byname",
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__ypcurrent, __ypcurrentlen,
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&key, &keylen, &data, &datalen);
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free(__ypcurrent);
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if(r != 0) {
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__ypcurrent = NULL;
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if (key)
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free(key);
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}
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else {
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__ypcurrent = key;
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__ypcurrentlen = keylen;
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}
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} else {
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r = yp_first(__ypdomain, "passwd.byname",
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&__ypcurrent, &__ypcurrentlen,
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&data, &datalen);
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}
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if(r != 0) {
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__ypmode = YPMODE_NONE;
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if(data)
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free(data);
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data = NULL;
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goto again;
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}
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bcopy(data, line, datalen);
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free(data);
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data = NULL;
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break;
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case YPMODE_NETGRP:
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s = getnetgrent(&host, &user, &dom);
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if(s == 0) { /* end of group */
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endnetgrent();
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__ypmode = YPMODE_NONE;
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goto again;
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}
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if(user && *user) {
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data = NULL;
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r = yp_match(__ypdomain, "passwd.byname",
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user, strlen(user),
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&data, &datalen);
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} else
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goto again;
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if(r != 0) {
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/*
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* if the netgroup is invalid, keep looking
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* as there may be valid users later on.
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*/
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if(data)
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free(data);
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goto again;
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}
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bcopy(data, line, datalen);
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free(data);
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data = NULL;
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break;
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case YPMODE_USER:
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if(name != (char *)NULL) {
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data = NULL;
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r = yp_match(__ypdomain, "passwd.byname",
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name, strlen(name),
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&data, &datalen);
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__ypmode = YPMODE_NONE;
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free(name);
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name = NULL;
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if(r != 0) {
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if(data)
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free(data);
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goto again;
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}
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bcopy(data, line, datalen);
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free(data);
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data = (char *)NULL;
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} else { /* XXX */
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__ypmode = YPMODE_NONE;
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goto again;
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}
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break;
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case YPMODE_NONE:
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abort(); /* cannot happen */
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break;
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}
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line[datalen] = '\0';
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if (__ypparse(&_pw_passwd, line))
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goto again;
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return &_pw_passwd;
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}
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#endif
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++_pw_keynum;
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bf[0] = _PW_KEYBYNUM;
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bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
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key.data = (u_char *)bf;
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key.size = sizeof(_pw_keynum) + 1;
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if(__hashpw(&key)) {
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#ifdef YP
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/* if we don't have YP at all, don't bother. */
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if(has_yppw) {
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if(_pw_passwd.pw_name[0] == '+') {
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/* set the mode */
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switch(_pw_passwd.pw_name[1]) {
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case '\0':
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__ypmode = YPMODE_FULL;
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break;
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case '@':
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__ypmode = YPMODE_NETGRP;
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setnetgrent(_pw_passwd.pw_name + 2);
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break;
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default:
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__ypmode = YPMODE_USER;
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name = strdup(_pw_passwd.pw_name + 1);
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break;
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}
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|
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/* save the prototype */
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__ypproto_set();
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goto again;
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} else if(_pw_passwd.pw_name[0] == '-') {
|
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/* an attempted exclusion */
|
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switch(_pw_passwd.pw_name[1]) {
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case '\0':
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break;
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case '@':
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setnetgrent(_pw_passwd.pw_name + 2);
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while(getnetgrent(&host, &user, &dom)) {
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if(user && *user)
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__ypexclude_add(user);
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}
|
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endnetgrent();
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break;
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default:
|
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__ypexclude_add(_pw_passwd.pw_name + 1);
|
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break;
|
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}
|
|
goto again;
|
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}
|
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}
|
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#endif
|
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return &_pw_passwd;
|
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}
|
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return (struct passwd *)NULL;
|
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}
|
|
|
|
#ifdef YP
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|
|
|
/*
|
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* See if the YP token is in the database. Only works if pwd_mkdb knows
|
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* about the token.
|
|
*/
|
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static int
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__has_yppw()
|
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{
|
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DBT key, data;
|
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DBT pkey, pdata;
|
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char bf[MAXLOGNAME];
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|
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key.data = (u_char *)__yp_token;
|
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key.size = strlen(__yp_token);
|
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|
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/* Pre-token database support. */
|
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bf[0] = _PW_KEYBYNAME;
|
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bf[1] = '+';
|
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pkey.data = (u_char *)bf;
|
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pkey.size = 2;
|
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|
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if ((_pw_db->get)(_pw_db, &key, &data, 0)
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&& (_pw_db->get)(_pw_db, &pkey, &pdata, 0))
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return(0); /* No YP. */
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return(1);
|
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}
|
|
#endif
|
|
|
|
struct passwd *
|
|
getpwnam(name)
|
|
const char *name;
|
|
{
|
|
DBT key;
|
|
int len, rval;
|
|
char bf[MAXLOGNAME + 1];
|
|
|
|
if (!_pw_db && !__initdb())
|
|
return((struct passwd *)NULL);
|
|
|
|
#ifdef YP
|
|
/*
|
|
* If YP is active, we must sequence through the passwd file
|
|
* in sequence.
|
|
*/
|
|
if (__has_yppw()) {
|
|
int r;
|
|
int s = -1;
|
|
const char *host, *user, *dom;
|
|
|
|
for(_pw_keynum=1; _pw_keynum; _pw_keynum++) {
|
|
bf[0] = _PW_KEYBYNUM;
|
|
bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
|
|
key.data = (u_char *)bf;
|
|
key.size = sizeof(_pw_keynum) + 1;
|
|
if(__hashpw(&key) == 0)
|
|
break;
|
|
switch(_pw_passwd.pw_name[0]) {
|
|
case '+':
|
|
if(!__ypdomain) {
|
|
if(_yp_check(&__ypdomain) == 0) {
|
|
continue;
|
|
}
|
|
}
|
|
/* save the prototype */
|
|
__ypproto_set();
|
|
|
|
switch(_pw_passwd.pw_name[1]) {
|
|
case '\0':
|
|
if(__ypcurrent) {
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
}
|
|
r = yp_match(__ypdomain,
|
|
"passwd.byname",
|
|
name, strlen(name),
|
|
&__ypcurrent, &__ypcurrentlen);
|
|
if(r != 0) {
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
continue;
|
|
}
|
|
break;
|
|
case '@':
|
|
pwnam_netgrp:
|
|
if(__ypcurrent) {
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
}
|
|
if(s == -1) /* first time */
|
|
setnetgrent(_pw_passwd.pw_name + 2);
|
|
s = getnetgrent(&host, &user, &dom);
|
|
if(s == 0) { /* end of group */
|
|
endnetgrent();
|
|
s = -1;
|
|
continue;
|
|
} else {
|
|
if(user && *user) {
|
|
r = yp_match(__ypdomain,
|
|
"passwd.byname",
|
|
user, strlen(user),
|
|
&__ypcurrent,
|
|
&__ypcurrentlen);
|
|
} else
|
|
goto pwnam_netgrp;
|
|
if(r != 0) {
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
/*
|
|
* just because this
|
|
* user is bad, doesn't
|
|
* mean they all are.
|
|
*/
|
|
goto pwnam_netgrp;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
if(__ypcurrent) {
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
}
|
|
user = _pw_passwd.pw_name + 1;
|
|
r = yp_match(__ypdomain,
|
|
"passwd.byname",
|
|
user, strlen(user),
|
|
&__ypcurrent,
|
|
&__ypcurrentlen);
|
|
if(r != 0) {
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
bcopy(__ypcurrent, line, __ypcurrentlen);
|
|
line[__ypcurrentlen] = '\0';
|
|
if(__ypparse(&_pw_passwd, line)
|
|
|| __ypexclude_is(_pw_passwd.pw_name)) {
|
|
if(s == 1) /* inside netgrp */
|
|
goto pwnam_netgrp;
|
|
continue;
|
|
}
|
|
break;
|
|
case '-':
|
|
/* attempted exclusion */
|
|
switch(_pw_passwd.pw_name[1]) {
|
|
case '\0':
|
|
break;
|
|
case '@':
|
|
setnetgrent(_pw_passwd.pw_name + 2);
|
|
while(getnetgrent(&host, &user, &dom)) {
|
|
if(user && *user)
|
|
__ypexclude_add(user);
|
|
}
|
|
endnetgrent();
|
|
break;
|
|
default:
|
|
__ypexclude_add(_pw_passwd.pw_name + 1);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
continue;
|
|
}
|
|
if(strcmp(_pw_passwd.pw_name, name) == 0) {
|
|
if (!_pw_stayopen) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
if(__ypexclude != (DB *)NULL) {
|
|
(void)(__ypexclude->close)(__ypexclude);
|
|
__ypexclude = (DB *)NULL;
|
|
}
|
|
__ypproto = (struct passwd *)NULL;
|
|
return &_pw_passwd;
|
|
}
|
|
if(s == 1) /* inside netgrp */
|
|
goto pwnam_netgrp;
|
|
continue;
|
|
}
|
|
if (!_pw_stayopen) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
if(__ypexclude != (DB *)NULL) {
|
|
(void)(__ypexclude->close)(__ypexclude);
|
|
__ypexclude = (DB *)NULL;
|
|
}
|
|
__ypproto = (struct passwd *)NULL;
|
|
return (struct passwd *)NULL;
|
|
}
|
|
#endif /* YP */
|
|
|
|
bf[0] = _PW_KEYBYNAME;
|
|
len = strlen(name);
|
|
len = MIN(len, MAXLOGNAME);
|
|
bcopy(name, bf + 1, len);
|
|
key.data = (u_char *)bf;
|
|
key.size = len + 1;
|
|
rval = __hashpw(&key);
|
|
|
|
if (!_pw_stayopen) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
return(rval ? &_pw_passwd : (struct passwd *)NULL);
|
|
}
|
|
|
|
struct passwd *
|
|
getpwuid(uid)
|
|
uid_t uid;
|
|
{
|
|
DBT key;
|
|
char bf[sizeof(_pw_keynum) + 1];
|
|
uid_t keyuid;
|
|
int rval;
|
|
|
|
if (!_pw_db && !__initdb())
|
|
return((struct passwd *)NULL);
|
|
|
|
#ifdef YP
|
|
/*
|
|
* If YP is active, we must sequence through the passwd file
|
|
* in sequence.
|
|
*/
|
|
if (__has_yppw()) {
|
|
char uidbuf[20];
|
|
int r;
|
|
int s = -1;
|
|
const char *host, *user, *dom;
|
|
|
|
snprintf(uidbuf, sizeof(uidbuf), "%u", uid);
|
|
for(_pw_keynum=1; _pw_keynum; _pw_keynum++) {
|
|
bf[0] = _PW_KEYBYNUM;
|
|
bcopy((char *)&_pw_keynum, bf + 1, sizeof(_pw_keynum));
|
|
key.data = (u_char *)bf;
|
|
key.size = sizeof(_pw_keynum) + 1;
|
|
if(__hashpw(&key) == 0)
|
|
break;
|
|
switch(_pw_passwd.pw_name[0]) {
|
|
case '+':
|
|
if(!__ypdomain) {
|
|
if(_yp_check(&__ypdomain) == 0) {
|
|
continue;
|
|
}
|
|
}
|
|
/* save the prototype */
|
|
__ypproto_set();
|
|
|
|
switch(_pw_passwd.pw_name[1]) {
|
|
case '\0':
|
|
if(__ypcurrent) {
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
}
|
|
r = yp_match(__ypdomain, "passwd.byuid",
|
|
uidbuf, strlen(uidbuf),
|
|
&__ypcurrent, &__ypcurrentlen);
|
|
if(r != 0) {
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
continue;
|
|
}
|
|
break;
|
|
case '@':
|
|
pwuid_netgrp:
|
|
if(__ypcurrent) {
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
}
|
|
if(s == -1) /* first time */
|
|
setnetgrent(_pw_passwd.pw_name + 2);
|
|
s = getnetgrent(&host, &user, &dom);
|
|
if(s == 0) { /* end of group */
|
|
endnetgrent();
|
|
s = -1;
|
|
continue;
|
|
} else {
|
|
if(user && *user) {
|
|
r = yp_match(__ypdomain,
|
|
"passwd.byname",
|
|
user, strlen(user),
|
|
&__ypcurrent,
|
|
&__ypcurrentlen);
|
|
} else
|
|
goto pwuid_netgrp;
|
|
if(r != 0) {
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
/*
|
|
* just because this
|
|
* user is bad, doesn't
|
|
* mean they all are.
|
|
*/
|
|
goto pwuid_netgrp;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
if(__ypcurrent) {
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
}
|
|
user = _pw_passwd.pw_name + 1;
|
|
r = yp_match(__ypdomain,
|
|
"passwd.byname",
|
|
user, strlen(user),
|
|
&__ypcurrent,
|
|
&__ypcurrentlen);
|
|
if(r != 0) {
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
bcopy(__ypcurrent, line, __ypcurrentlen);
|
|
line[__ypcurrentlen] = '\0';
|
|
if(__ypparse(&_pw_passwd, line)
|
|
|| __ypexclude_is(_pw_passwd.pw_name)) {
|
|
if(s == 1) /* inside netgroup */
|
|
goto pwuid_netgrp;
|
|
continue;
|
|
}
|
|
break;
|
|
case '-':
|
|
/* attempted exclusion */
|
|
switch(_pw_passwd.pw_name[1]) {
|
|
case '\0':
|
|
break;
|
|
case '@':
|
|
setnetgrent(_pw_passwd.pw_name + 2);
|
|
while(getnetgrent(&host, &user, &dom)) {
|
|
if(user && *user)
|
|
__ypexclude_add(user);
|
|
}
|
|
endnetgrent();
|
|
break;
|
|
default:
|
|
__ypexclude_add(_pw_passwd.pw_name + 1);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
continue;
|
|
}
|
|
if( _pw_passwd.pw_uid == uid) {
|
|
if (!_pw_stayopen) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
if (__ypexclude != (DB *)NULL) {
|
|
(void)(__ypexclude->close)(__ypexclude);
|
|
__ypexclude = (DB *)NULL;
|
|
}
|
|
__ypproto = NULL;
|
|
return &_pw_passwd;
|
|
}
|
|
if(s == 1) /* inside netgroup */
|
|
goto pwuid_netgrp;
|
|
continue;
|
|
}
|
|
if (!_pw_stayopen) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
if(__ypexclude != (DB *)NULL) {
|
|
(void)(__ypexclude->close)(__ypexclude);
|
|
__ypexclude = (DB *)NULL;
|
|
}
|
|
__ypproto = (struct passwd *)NULL;
|
|
return (struct passwd *)NULL;
|
|
}
|
|
#endif /* YP */
|
|
|
|
bf[0] = _PW_KEYBYUID;
|
|
keyuid = uid;
|
|
bcopy(&keyuid, bf + 1, sizeof(keyuid));
|
|
key.data = (u_char *)bf;
|
|
key.size = sizeof(keyuid) + 1;
|
|
rval = __hashpw(&key);
|
|
|
|
if (!_pw_stayopen) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
return(rval ? &_pw_passwd : (struct passwd *)NULL);
|
|
}
|
|
|
|
int
|
|
setpassent(stayopen)
|
|
int stayopen;
|
|
{
|
|
_pw_keynum = 0;
|
|
_pw_stayopen = stayopen;
|
|
#ifdef YP
|
|
__ypmode = YPMODE_NONE;
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
if(__ypexclude != (DB *)NULL) {
|
|
(void)(__ypexclude->close)(__ypexclude);
|
|
__ypexclude = (DB *)NULL;
|
|
}
|
|
__ypproto = (struct passwd *)NULL;
|
|
#endif
|
|
return(1);
|
|
}
|
|
|
|
void
|
|
setpwent()
|
|
{
|
|
(void) setpassent(0);
|
|
}
|
|
|
|
void
|
|
endpwent()
|
|
{
|
|
_pw_keynum = 0;
|
|
if (_pw_db) {
|
|
(void)(_pw_db->close)(_pw_db);
|
|
_pw_db = (DB *)NULL;
|
|
}
|
|
#ifdef YP
|
|
__ypmode = YPMODE_NONE;
|
|
if(__ypcurrent)
|
|
free(__ypcurrent);
|
|
__ypcurrent = NULL;
|
|
if(__ypexclude != (DB *)NULL) {
|
|
(void)(__ypexclude->close)(__ypexclude);
|
|
__ypexclude = (DB *)NULL;
|
|
}
|
|
__ypproto = (struct passwd *)NULL;
|
|
#endif
|
|
}
|
|
|
|
static int
|
|
__initdb()
|
|
{
|
|
static int warned;
|
|
char *p;
|
|
|
|
#ifdef YP
|
|
__ypmode = YPMODE_NONE;
|
|
#endif
|
|
if (geteuid() == 0) {
|
|
_pw_db = dbopen((p = _PATH_SMP_DB), O_RDONLY, 0, DB_HASH, NULL);
|
|
if (_pw_db)
|
|
return(1);
|
|
}
|
|
_pw_db = dbopen((p = _PATH_MP_DB), O_RDONLY, 0, DB_HASH, NULL);
|
|
if (_pw_db)
|
|
return(1);
|
|
if (!warned)
|
|
syslog(LOG_ERR, "%s: %m", p);
|
|
warned = 1;
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
__hashpw(key)
|
|
DBT *key;
|
|
{
|
|
char *p, *t;
|
|
static u_int max;
|
|
static char *line;
|
|
DBT data;
|
|
|
|
if ((_pw_db->get)(_pw_db, key, &data, 0))
|
|
return(0);
|
|
p = (char *)data.data;
|
|
if (data.size > max && !(line = realloc(line, (max += 1024))))
|
|
return(0);
|
|
|
|
/* THIS CODE MUST MATCH THAT IN pwd_mkdb. */
|
|
t = line;
|
|
#define EXPAND(e) e = t; while ((*t++ = *p++));
|
|
#define SCALAR(v) memmove(&(v), p, sizeof v); p += sizeof v
|
|
EXPAND(_pw_passwd.pw_name);
|
|
EXPAND(_pw_passwd.pw_passwd);
|
|
SCALAR(_pw_passwd.pw_uid);
|
|
SCALAR(_pw_passwd.pw_gid);
|
|
SCALAR(_pw_passwd.pw_change);
|
|
EXPAND(_pw_passwd.pw_class);
|
|
EXPAND(_pw_passwd.pw_gecos);
|
|
EXPAND(_pw_passwd.pw_dir);
|
|
EXPAND(_pw_passwd.pw_shell);
|
|
SCALAR(_pw_passwd.pw_expire);
|
|
|
|
/* See if there's any data left. If so, read in flags. */
|
|
if (data.size > (p - (char *)data.data)) {
|
|
SCALAR(_pw_flags);
|
|
} else
|
|
_pw_flags = _PASSWORD_NOUID|_PASSWORD_NOGID; /* default */
|
|
|
|
return(1);
|
|
}
|