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NetBSD/lib/libc/gen/getpwent.c
mrg c135ae8203 allow root to use pwd.db.
1998-02-10 03:56:33 +00:00

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