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minix/lib/libc/gen/getpwent.c
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC) 
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

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/* $NetBSD: getpwent.c,v 1.81 2012/09/08 15:15:06 dholland Exp $ */
/*-
* Copyright (c) 1997-2000, 2004-2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1988, 1993
* 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.
*/
/*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 1.81 2012/09/08 15:15:06 dholland Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include "reentrant.h"
#include <sys/param.h>
#include <assert.h>
#include <db.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <netgroup.h>
#include <nsswitch.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#ifdef HESIOD
#include <hesiod.h>
#endif
#ifdef YP
#include <machine/param.h>
#include <rpc/rpc.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#endif
#include "pw_private.h"
#define _PASSWD_COMPAT /* "passwd" defaults to compat, so always provide it */
#ifdef __weak_alias
__weak_alias(endpwent,_endpwent)
__weak_alias(setpassent,_setpassent)
__weak_alias(setpwent,_setpwent)
#endif
#ifdef _REENTRANT
static mutex_t _pwmutex = MUTEX_INITIALIZER;
#endif
const char __yp_token[] = "__YP!"; /* Let pwd_mkdb pull this in. */
/*
* The pwd.db lookup techniques and data extraction code here must be kept
* in sync with that in `pwd_mkdb'.
*/
#if defined(YP) || defined(HESIOD)
/*
* _pw_parse
* Parses entry using pw_scan(3) (without the trailing \n)
* after copying to buf, and fills in pw with corresponding values.
* If old is non-zero, entry is in _PASSWORD_OLDFMT.
* Returns 1 if parsed successfully, 0 on parse failure.
*/
static int
_pw_parse(const char *entry, struct passwd *pw, char *buf, size_t buflen,
int old)
{
int flags;
_DIAGASSERT(entry != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buf != NULL);
if (strlcpy(buf, entry, buflen) >= buflen)
return 0;
flags = _PASSWORD_NOWARN;
if (old)
flags |= _PASSWORD_OLDFMT;
return __pw_scan(buf, pw, &flags);
}
#endif /* YP || HESIOD */
/*
* _pw_opendb
* if *db is NULL, dbopen(3) /etc/spwd.db or /etc/pwd.db (depending
* upon permissions, etc)
*/
static int
_pw_opendb(DB **db, int *version)
{
static int warned;
DBT key;
DBT value;
const char *dbfile = NULL;
_DIAGASSERT(db != NULL);
_DIAGASSERT(version != NULL);
if (*db != NULL) /* open *db */
return NS_SUCCESS;
if (geteuid() == 0) {
dbfile = _PATH_SMP_DB;
*db = dbopen(dbfile, O_RDONLY, 0, DB_HASH, NULL);
}
if (*db == NULL) {
dbfile = _PATH_MP_DB;
*db = dbopen(dbfile, O_RDONLY, 0, DB_HASH, NULL);
}
if (*db == NULL) {
if (!warned) {
int serrno = errno;
syslog(LOG_ERR, "%s: %m", dbfile);
errno = serrno;
}
warned = 1;
return NS_UNAVAIL;
}
key.data = __UNCONST("VERSION");
key.size = strlen((char *)key.data) + 1;
switch ((*(*db)->get)(*db, &key, &value, 0)) {
case 0:
if (sizeof(*version) != value.size)
return NS_UNAVAIL;
(void)memcpy(version, value.data, value.size);
break; /* found */
case 1:
*version = 0; /* not found */
break;
case -1:
return NS_UNAVAIL; /* error in db routines */
default:
abort();
}
return NS_SUCCESS;
}
/*
* _pw_getkey
* Lookup key in *db, filling in pw
* with the result, allocating memory from buffer (size buflen).
* (The caller may point key.data to buffer on entry; the contents
* of key.data will be invalid on exit.)
*/
static int
_pw_getkey(DB *db, DBT *key,
struct passwd *pw, char *buffer, size_t buflen, int *pwflags,
int version)
{
char *p, *t;
DBT data;
_DIAGASSERT(db != NULL);
_DIAGASSERT(key != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
/* pwflags may be NULL (if we don't care about them */
if (db == NULL) /* this shouldn't happen */
return NS_UNAVAIL;
switch ((db->get)(db, key, &data, 0)) {
case 0:
break; /* found */
case 1:
return NS_NOTFOUND; /* not found */
case -1:
return NS_UNAVAIL; /* error in db routines */
default:
abort();
}
p = (char *)data.data;
if (data.size > buflen) {
errno = ERANGE;
return NS_UNAVAIL;
}
/*
* THE DECODING BELOW MUST MATCH THAT IN pwd_mkdb.
*/
t = buffer;
#define MACRO(a) do { a } while (/*CONSTCOND*/0)
#define EXPAND(e) MACRO(e = t; while ((*t++ = *p++));)
#define SCALAR(v) MACRO(memmove(&(v), p, sizeof v); p += sizeof v;)
EXPAND(pw->pw_name);
EXPAND(pw->pw_passwd);
SCALAR(pw->pw_uid);
SCALAR(pw->pw_gid);
if (version == 0) {
int32_t tmp;
SCALAR(tmp);
pw->pw_change = tmp;
} else
SCALAR(pw->pw_change);
EXPAND(pw->pw_class);
EXPAND(pw->pw_gecos);
EXPAND(pw->pw_dir);
EXPAND(pw->pw_shell);
if (version == 0) {
int32_t tmp;
SCALAR(tmp);
pw->pw_expire = tmp;
} else
SCALAR(pw->pw_expire);
if (pwflags) {
/* See if there's any data left. If so, read in flags. */
if (data.size > (size_t) (p - (char *)data.data)) {
SCALAR(*pwflags);
} else { /* default */
*pwflags = _PASSWORD_NOUID|_PASSWORD_NOGID;
}
}
return NS_SUCCESS;
}
/*
* _pw_memfrombuf
* Obtain want bytes from buffer (of size buflen) and return a pointer
* to the available memory after adjusting buffer/buflen.
* Returns NULL if there is insufficient space.
*/
static char *
_pw_memfrombuf(size_t want, char **buffer, size_t *buflen)
{
char *rv;
if (want > *buflen) {
errno = ERANGE;
return NULL;
}
rv = *buffer;
*buffer += want;
*buflen -= want;
return rv;
}
/*
* _pw_copy
* Copy the contents of frompw to pw; memory for strings
* and arrays will be allocated from buf (of size buflen).
* If proto != NULL, use various fields in proto in preference to frompw.
* Returns 1 if copied successfully, 0 on copy failure.
* NOTE: frompw must not use buf for its own pointers.
*/
static int
_pw_copy(const struct passwd *frompw, struct passwd *pw,
char *buf, size_t buflen, const struct passwd *protopw, int protoflags)
{
size_t count;
int useproto;
_DIAGASSERT(frompw != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buf != NULL);
/* protopw may be NULL */
useproto = protopw && protopw->pw_name;
#define COPYSTR(to, from) \
do { \
count = strlen((from)); \
(to) = _pw_memfrombuf(count+1, &buf, &buflen); \
if ((to) == NULL) \
return 0; \
memmove((to), (from), count); \
to[count] = '\0'; \
} while (0) /* LINTED */
#define COPYFIELD(field) COPYSTR(pw->field, frompw->field)
#define COPYPROTOFIELD(field) COPYSTR(pw->field, \
(useproto && *protopw->field ? protopw->field : frompw->field))
COPYFIELD(pw_name);
#ifdef PW_OVERRIDE_PASSWD
COPYPROTOFIELD(pw_passwd);
#else
COPYFIELD(pw_passwd);
#endif
if (useproto && !(protoflags & _PASSWORD_NOUID))
pw->pw_uid = protopw->pw_uid;
else
pw->pw_uid = frompw->pw_uid;
if (useproto && !(protoflags & _PASSWORD_NOGID))
pw->pw_gid = protopw->pw_gid;
else
pw->pw_gid = frompw->pw_gid;
pw->pw_change = frompw->pw_change;
COPYFIELD(pw_class);
COPYPROTOFIELD(pw_gecos);
COPYPROTOFIELD(pw_dir);
COPYPROTOFIELD(pw_shell);
#undef COPYSTR
#undef COPYFIELD
#undef COPYPROTOFIELD
return 1;
}
/*
* files methods
*/
/* state shared between files methods */
struct files_state {
int stayopen; /* see getpassent(3) */
DB *db; /* passwd file handle */
int keynum; /* key counter, -1 if no more */
int version;
};
static struct files_state _files_state;
/* storage for non _r functions */
static struct passwd _files_passwd;
static char _files_passwdbuf[_GETPW_R_SIZE_MAX];
static int
_files_start(struct files_state *state)
{
int rv;
_DIAGASSERT(state != NULL);
state->keynum = 0;
rv = _pw_opendb(&state->db, &state->version);
if (rv != NS_SUCCESS)
return rv;
return NS_SUCCESS;
}
static int
_files_end(struct files_state *state)
{
_DIAGASSERT(state != NULL);
state->keynum = 0;
if (state->db) {
(void)(state->db->close)(state->db);
state->db = NULL;
}
return NS_SUCCESS;
}
/*
* _files_pwscan
* Search state->db for the next desired entry.
* If search is _PW_KEYBYNUM, look for state->keynum.
* If search is _PW_KEYBYNAME, look for name.
* If search is _PW_KEYBYUID, look for uid.
* Sets *retval to the errno if the result is not NS_SUCCESS
* or NS_NOTFOUND.
*/
static int
_files_pwscan(int *retval, struct passwd *pw, char *buffer, size_t buflen,
struct files_state *state, int search, const char *name, uid_t uid)
{
const void *from;
size_t fromlen;
DBT key;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(state != NULL);
/* name is NULL to indicate searching for uid */
*retval = 0;
if (state->db == NULL) { /* only start if file not open yet */
rv = _files_start(state);
if (rv != NS_SUCCESS)
goto filespwscan_out;
}
for (;;) { /* search for a match */
switch (search) {
case _PW_KEYBYNUM:
if (state->keynum == -1)
return NS_NOTFOUND; /* no more records */
state->keynum++;
from = &state->keynum;
fromlen = sizeof(state->keynum);
break;
case _PW_KEYBYNAME:
from = name;
fromlen = strlen(name);
break;
case _PW_KEYBYUID:
from = &uid;
fromlen = sizeof(uid);
break;
default:
abort();
}
if (buflen <= fromlen) { /* buffer too small */
*retval = ERANGE;
return NS_UNAVAIL;
}
buffer[0] = search; /* setup key */
memmove(buffer + 1, from, fromlen);
key.size = fromlen + 1;
key.data = (u_char *)buffer;
/* search for key */
rv = _pw_getkey(state->db, &key, pw, buffer, buflen, NULL,
state->version);
if (rv != NS_SUCCESS) /* no match */
break;
if (pw->pw_name[0] == '+' || pw->pw_name[0] == '-') {
/* if a compat line */
if (search == _PW_KEYBYNUM)
continue; /* read next if pwent */
rv = NS_NOTFOUND; /* don't match if pw{nam,uid} */
break;
}
break;
}
if (rv == NS_NOTFOUND && search == _PW_KEYBYNUM)
state->keynum = -1; /* flag `no more records' */
if (rv == NS_SUCCESS) {
if ((search == _PW_KEYBYUID && pw->pw_uid != uid) ||
(search == _PW_KEYBYNAME && strcmp(pw->pw_name, name) != 0))
rv = NS_NOTFOUND;
}
filespwscan_out:
if (rv != NS_SUCCESS && rv != NS_NOTFOUND)
*retval = errno;
return rv;
}
/*ARGSUSED*/
static int
_files_setpwent(void *nsrv, void *nscb, va_list ap)
{
_files_state.stayopen = 0;
return _files_start(&_files_state);
}
/*ARGSUSED*/
static int
_files_setpassent(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
int stayopen = va_arg(ap, int);
int rv;
_files_state.stayopen = stayopen;
rv = _files_start(&_files_state);
*retval = (rv == NS_SUCCESS);
return rv;
}
/*ARGSUSED*/
static int
_files_endpwent(void *nsrv, void *nscb, va_list ap)
{
_files_state.stayopen = 0;
return _files_end(&_files_state);
}
/*ARGSUSED*/
static int
_files_getpwent(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _files_pwscan(&rerror, &_files_passwd,
_files_passwdbuf, sizeof(_files_passwdbuf),
&_files_state, _PW_KEYBYNUM, NULL, 0);
if (rv == NS_SUCCESS)
*retval = &_files_passwd;
return rv;
}
/*ARGSUSED*/
static int
_files_getpwent_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
rv = _files_pwscan(retval, pw, buffer, buflen, &_files_state,
_PW_KEYBYNUM, NULL, 0);
if (rv == NS_SUCCESS)
*result = pw;
else
*result = NULL;
return rv;
}
/*ARGSUSED*/
static int
_files_getpwnam(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
const char *name = va_arg(ap, const char *);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _files_start(&_files_state);
if (rv != NS_SUCCESS)
return rv;
rv = _files_pwscan(&rerror, &_files_passwd,
_files_passwdbuf, sizeof(_files_passwdbuf),
&_files_state, _PW_KEYBYNAME, name, 0);
if (!_files_state.stayopen)
_files_end(&_files_state);
if (rv == NS_SUCCESS)
*retval = &_files_passwd;
return rv;
}
/*ARGSUSED*/
static int
_files_getpwnam_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
const char *name = va_arg(ap, const char *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct files_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
memset(&state, 0, sizeof(state));
rv = _files_pwscan(retval, pw, buffer, buflen, &state,
_PW_KEYBYNAME, name, 0);
_files_end(&state);
if (rv == NS_SUCCESS)
*result = pw;
return rv;
}
/*ARGSUSED*/
static int
_files_getpwuid(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
uid_t uid = va_arg(ap, uid_t);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _files_start(&_files_state);
if (rv != NS_SUCCESS)
return rv;
rv = _files_pwscan(&rerror, &_files_passwd,
_files_passwdbuf, sizeof(_files_passwdbuf),
&_files_state, _PW_KEYBYUID, NULL, uid);
if (!_files_state.stayopen)
_files_end(&_files_state);
if (rv == NS_SUCCESS)
*retval = &_files_passwd;
return rv;
}
/*ARGSUSED*/
static int
_files_getpwuid_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
uid_t uid = va_arg(ap, uid_t);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct files_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
memset(&state, 0, sizeof(state));
rv = _files_pwscan(retval, pw, buffer, buflen, &state,
_PW_KEYBYUID, NULL, uid);
_files_end(&state);
if (rv == NS_SUCCESS)
*result = pw;
return rv;
}
#ifdef HESIOD
/*
* dns methods
*/
/* state shared between dns methods */
struct dns_state {
int stayopen; /* see getpassent(3) */
void *context; /* Hesiod context */
int num; /* passwd index, -1 if no more */
};
static struct dns_state _dns_state;
/* storage for non _r functions */
static struct passwd _dns_passwd;
static char _dns_passwdbuf[_GETPW_R_SIZE_MAX];
static int
_dns_start(struct dns_state *state)
{
_DIAGASSERT(state != NULL);
state->num = 0;
if (state->context == NULL) { /* setup Hesiod */
if (hesiod_init(&state->context) == -1)
return NS_UNAVAIL;
}
return NS_SUCCESS;
}
static int
_dns_end(struct dns_state *state)
{
_DIAGASSERT(state != NULL);
state->num = 0;
if (state->context) {
hesiod_end(state->context);
state->context = NULL;
}
return NS_SUCCESS;
}
/*
* _dns_pwscan
* Look for the Hesiod name provided in buffer in the NULL-terminated
* list of zones,
* and decode into pw/buffer/buflen.
*/
static int
_dns_pwscan(int *retval, struct passwd *pw, char *buffer, size_t buflen,
struct dns_state *state, const char **zones)
{
const char **curzone;
char **hp, *ep;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(state != NULL);
_DIAGASSERT(zones != NULL);
*retval = 0;
if (state->context == NULL) { /* only start if Hesiod not setup */
rv = _dns_start(state);
if (rv != NS_SUCCESS)
return rv;
}
hp = NULL;
rv = NS_NOTFOUND;
for (curzone = zones; *curzone; curzone++) { /* search zones */
hp = hesiod_resolve(state->context, buffer, *curzone);
if (hp != NULL)
break;
if (errno != ENOENT) {
rv = NS_UNAVAIL;
goto dnspwscan_out;
}
}
if (*curzone == NULL)
goto dnspwscan_out;
if ((ep = strchr(hp[0], '\n')) != NULL)
*ep = '\0'; /* clear trailing \n */
if (_pw_parse(hp[0], pw, buffer, buflen, 1)) /* validate line */
rv = NS_SUCCESS;
else
rv = NS_UNAVAIL;
dnspwscan_out:
if (rv != NS_SUCCESS && rv != NS_NOTFOUND)
*retval = errno;
if (hp)
hesiod_free_list(state->context, hp);
return rv;
}
/*ARGSUSED*/
static int
_dns_setpwent(void *nsrv, void *nscb, va_list ap)
{
_dns_state.stayopen = 0;
return _dns_start(&_dns_state);
}
/*ARGSUSED*/
static int
_dns_setpassent(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
int stayopen = va_arg(ap, int);
int rv;
_dns_state.stayopen = stayopen;
rv = _dns_start(&_dns_state);
*retval = (rv == NS_SUCCESS);
return rv;
}
/*ARGSUSED*/
static int
_dns_endpwent(void *nsrv, void *nscb, va_list ap)
{
_dns_state.stayopen = 0;
return _dns_end(&_dns_state);
}
/*ARGSUSED*/
static int
_dns_getpwent(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
char **hp, *ep;
int rv;
_DIAGASSERT(retval != NULL);
*retval = NULL;
if (_dns_state.num == -1) /* exhausted search */
return NS_NOTFOUND;
if (_dns_state.context == NULL) {
/* only start if Hesiod not setup */
rv = _dns_start(&_dns_state);
if (rv != NS_SUCCESS)
return rv;
}
next_dns_entry:
hp = NULL;
rv = NS_NOTFOUND;
/* find passwd-NNN */
snprintf(_dns_passwdbuf, sizeof(_dns_passwdbuf),
"passwd-%u", _dns_state.num);
_dns_state.num++;
hp = hesiod_resolve(_dns_state.context, _dns_passwdbuf, "passwd");
if (hp == NULL) {
if (errno == ENOENT)
_dns_state.num = -1;
else
rv = NS_UNAVAIL;
} else {
if ((ep = strchr(hp[0], '\n')) != NULL)
*ep = '\0'; /* clear trailing \n */
/* validate line */
if (_pw_parse(hp[0], &_dns_passwd,
_dns_passwdbuf, sizeof(_dns_passwdbuf), 1))
rv = NS_SUCCESS;
else { /* dodgy entry, try again */
hesiod_free_list(_dns_state.context, hp);
goto next_dns_entry;
}
}
if (hp)
hesiod_free_list(_dns_state.context, hp);
if (rv == NS_SUCCESS)
*retval = &_dns_passwd;
return rv;
}
/*ARGSUSED*/
static int
_dns_getpwent_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
char **hp, *ep;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*retval = 0;
if (_dns_state.num == -1) /* exhausted search */
return NS_NOTFOUND;
if (_dns_state.context == NULL) {
/* only start if Hesiod not setup */
rv = _dns_start(&_dns_state);
if (rv != NS_SUCCESS)
return rv;
}
next_dns_entry:
hp = NULL;
rv = NS_NOTFOUND;
/* find passwd-NNN */
snprintf(buffer, buflen, "passwd-%u", _dns_state.num);
_dns_state.num++;
hp = hesiod_resolve(_dns_state.context, buffer, "passwd");
if (hp == NULL) {
if (errno == ENOENT)
_dns_state.num = -1;
else
rv = NS_UNAVAIL;
} else {
if ((ep = strchr(hp[0], '\n')) != NULL)
*ep = '\0'; /* clear trailing \n */
/* validate line */
if (_pw_parse(hp[0], pw, buffer, buflen, 1))
rv = NS_SUCCESS;
else { /* dodgy entry, try again */
hesiod_free_list(_dns_state.context, hp);
goto next_dns_entry;
}
}
if (hp)
hesiod_free_list(_dns_state.context, hp);
if (rv == NS_SUCCESS)
*result = pw;
else
*result = NULL;
return rv;
}
static const char *_dns_uid_zones[] = {
"uid",
"passwd",
NULL
};
/*ARGSUSED*/
static int
_dns_getpwuid(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
uid_t uid = va_arg(ap, uid_t);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _dns_start(&_dns_state);
if (rv != NS_SUCCESS)
return rv;
snprintf(_dns_passwdbuf, sizeof(_dns_passwdbuf),
"%u", (unsigned int)uid);
rv = _dns_pwscan(&rerror, &_dns_passwd,
_dns_passwdbuf, sizeof(_dns_passwdbuf),
&_dns_state, _dns_uid_zones);
if (!_dns_state.stayopen)
_dns_end(&_dns_state);
if (rv == NS_SUCCESS && uid == _dns_passwd.pw_uid)
*retval = &_dns_passwd;
return rv;
}
/*ARGSUSED*/
static int
_dns_getpwuid_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
uid_t uid = va_arg(ap, uid_t);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct dns_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
memset(&state, 0, sizeof(state));
snprintf(buffer, buflen, "%u", (unsigned int)uid);
rv = _dns_pwscan(retval, pw, buffer, buflen, &state, _dns_uid_zones);
_dns_end(&state);
if (rv != NS_SUCCESS)
return rv;
if (uid == pw->pw_uid) {
*result = pw;
return NS_SUCCESS;
} else
return NS_NOTFOUND;
}
static const char *_dns_nam_zones[] = {
"passwd",
NULL
};
/*ARGSUSED*/
static int
_dns_getpwnam(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
const char *name = va_arg(ap, const char *);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _dns_start(&_dns_state);
if (rv != NS_SUCCESS)
return rv;
snprintf(_dns_passwdbuf, sizeof(_dns_passwdbuf), "%s", name);
rv = _dns_pwscan(&rerror, &_dns_passwd,
_dns_passwdbuf, sizeof(_dns_passwdbuf),
&_dns_state, _dns_nam_zones);
if (!_dns_state.stayopen)
_dns_end(&_dns_state);
if (rv == NS_SUCCESS && strcmp(name, _dns_passwd.pw_name) == 0)
*retval = &_dns_passwd;
return rv;
}
/*ARGSUSED*/
static int
_dns_getpwnam_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
const char *name = va_arg(ap, const char *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct dns_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
memset(&state, 0, sizeof(state));
snprintf(buffer, buflen, "%s", name);
rv = _dns_pwscan(retval, pw, buffer, buflen, &state, _dns_nam_zones);
_dns_end(&state);
if (rv != NS_SUCCESS)
return rv;
if (strcmp(name, pw->pw_name) == 0) {
*result = pw;
return NS_SUCCESS;
} else
return NS_NOTFOUND;
}
#endif /* HESIOD */
#ifdef YP
/*
* nis methods
*/
/* state shared between nis methods */
struct nis_state {
int stayopen; /* see getpassent(3) */
char *domain; /* NIS domain */
int done; /* non-zero if search exhausted */
char *current; /* current first/next match */
int currentlen; /* length of _nis_current */
enum { /* shadow map type */
NISMAP_UNKNOWN = 0, /* unknown ... */
NISMAP_NONE, /* none: use "passwd.by*" */
NISMAP_ADJUNCT, /* pw_passwd from "passwd.adjunct.*" */
NISMAP_MASTER /* all from "master.passwd.by*" */
} maptype;
};
static struct nis_state _nis_state;
/* storage for non _r functions */
static struct passwd _nis_passwd;
static char _nis_passwdbuf[_GETPW_R_SIZE_MAX];
static const char __nis_pw_n_1[] = "master.passwd.byname";
static const char __nis_pw_n_2[] = "passwd.byname";
static const char __nis_pw_u_1[] = "master.passwd.byuid";
static const char __nis_pw_u_2[] = "passwd.byuid";
static const char * const __nis_pw_n_map[4] = { __nis_pw_n_2, __nis_pw_n_2, __nis_pw_n_2, __nis_pw_n_1 };
static const char * const __nis_pw_u_map[4] = { __nis_pw_u_2, __nis_pw_u_2, __nis_pw_u_2, __nis_pw_u_1 };
/* macros for deciding which NIS maps to use. */
#define PASSWD_BYNAME(x) ((x)->maptype == NISMAP_MASTER ? __nis_pw_n_1 : __nis_pw_n_2)
#define PASSWD_BYUID(x) ((x)->maptype == NISMAP_MASTER ? __nis_pw_u_1 : __nis_pw_u_2)
static int
_nis_start(struct nis_state *state)
{
_DIAGASSERT(state != NULL);
state->done = 0;
if (state->current) {
free(state->current);
state->current = NULL;
}
if (state->domain == NULL) { /* setup NIS */
switch (yp_get_default_domain(&state->domain)) {
case 0:
break;
case YPERR_RESRC:
return NS_TRYAGAIN;
default:
return NS_UNAVAIL;
}
}
/* determine where to get pw_passwd from */
if (state->maptype == NISMAP_UNKNOWN) {
int r, order;
state->maptype = NISMAP_NONE; /* default to no adjunct */
if (geteuid() != 0) /* non-root can't use adjunct */
return NS_SUCCESS;
/* look for "master.passwd.*" */
r = yp_order(state->domain, "master.passwd.byname", &order);
if (r == 0) {
state->maptype = NISMAP_MASTER;
return NS_SUCCESS;
}
/* master.passwd doesn't exist, try passwd.adjunct */
if (r == YPERR_MAP) {
r = yp_order(state->domain, "passwd.adjunct.byname",
&order);
if (r == 0)
state->maptype = NISMAP_ADJUNCT;
}
}
return NS_SUCCESS;
}
static int
_nis_end(struct nis_state *state)
{
_DIAGASSERT(state != NULL);
if (state->domain)
state->domain = NULL;
state->done = 0;
if (state->current)
free(state->current);
state->current = NULL;
state->maptype = NISMAP_UNKNOWN;
return NS_SUCCESS;
}
/*
* nis_parse
* wrapper to _pw_parse that obtains the real password from the
* "passwd.adjunct.byname" NIS map if the maptype is NISMAP_ADJUNCT.
*/
static int
_nis_parse(const char *entry, struct passwd *pw, char *buf, size_t buflen,
struct nis_state *state)
{
size_t elen;
_DIAGASSERT(entry != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buf != NULL);
_DIAGASSERT(state != NULL);
elen = strlen(entry) + 1;
if (elen >= buflen)
return 0;
if (! _pw_parse(entry, pw, buf, buflen,
!(state->maptype == NISMAP_MASTER)))
return 0;
if ((state->maptype == NISMAP_ADJUNCT) &&
(strstr(pw->pw_passwd, "##") != NULL)) {
char *data;
int datalen;
if (yp_match(state->domain, "passwd.adjunct.byname",
pw->pw_name, (int)strlen(pw->pw_name),
&data, &datalen) == 0) {
char *bp, *ep;
/* skip name to get password */
ep = data;
if (strsep(&ep, ":") != NULL &&
(bp = strsep(&ep, ":")) != NULL) {
/* store new pw_passwd after entry */
if (strlcpy(buf + elen, bp, buflen - elen) >=
buflen - elen) {
free(data);
return 0;
}
pw->pw_passwd = &buf[elen];
}
free(data);
}
}
return 1;
}
/*
* _nis_pwscan
* Look for the yp key provided in buffer from map,
* and decode into pw/buffer/buflen.
*/
static int
_nis_pwscan(int *retval, struct passwd *pw, char *buffer, size_t buflen,
struct nis_state *state, const char * const *map_arr, size_t nmaps)
{
char *data;
int nisr, rv, datalen;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(state != NULL);
_DIAGASSERT(map_arr != NULL);
*retval = 0;
if (state->domain == NULL) { /* only start if NIS not setup */
rv = _nis_start(state);
if (rv != NS_SUCCESS)
return rv;
}
data = NULL;
rv = NS_NOTFOUND;
_DIAGASSERT(state->maptype != NISMAP_UNKNOWN &&
(unsigned)state->maptype < nmaps);
/* search map */
nisr = yp_match(state->domain, map_arr[state->maptype], buffer, (int)strlen(buffer),
&data, &datalen);
switch (nisr) {
case 0:
data[datalen] = '\0'; /* clear trailing \n */
if (_nis_parse(data, pw, buffer, buflen, state))
rv = NS_SUCCESS; /* validate line */
else
rv = NS_UNAVAIL;
break;
case YPERR_KEY:
break;
default:
rv = NS_UNAVAIL;
break;
}
if (rv != NS_SUCCESS && rv != NS_NOTFOUND)
*retval = errno;
if (data)
free(data);
return rv;
}
/*ARGSUSED*/
static int
_nis_setpwent(void *nsrv, void *nscb, va_list ap)
{
_nis_state.stayopen = 0;
return _nis_start(&_nis_state);
}
/*ARGSUSED*/
static int
_nis_setpassent(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
int stayopen = va_arg(ap, int);
int rv;
_nis_state.stayopen = stayopen;
rv = _nis_start(&_nis_state);
*retval = (rv == NS_SUCCESS);
return rv;
}
/*ARGSUSED*/
static int
_nis_endpwent(void *nsrv, void *nscb, va_list ap)
{
return _nis_end(&_nis_state);
}
/*ARGSUSED*/
static int
_nis_getpwent(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
char *key, *data;
int keylen, datalen, rv, nisr;
_DIAGASSERT(retval != NULL);
*retval = NULL;
if (_nis_state.done) /* exhausted search */
return NS_NOTFOUND;
if (_nis_state.domain == NULL) {
/* only start if NIS not setup */
rv = _nis_start(&_nis_state);
if (rv != NS_SUCCESS)
return rv;
}
next_nis_entry:
key = NULL;
data = NULL;
rv = NS_NOTFOUND;
if (_nis_state.current) { /* already searching */
nisr = yp_next(_nis_state.domain, PASSWD_BYNAME(&_nis_state),
_nis_state.current, _nis_state.currentlen,
&key, &keylen, &data, &datalen);
free(_nis_state.current);
_nis_state.current = NULL;
switch (nisr) {
case 0:
_nis_state.current = key;
_nis_state.currentlen = keylen;
key = NULL;
break;
case YPERR_NOMORE:
_nis_state.done = 1;
goto nisent_out;
default:
rv = NS_UNAVAIL;
goto nisent_out;
}
} else { /* new search */
if (yp_first(_nis_state.domain, PASSWD_BYNAME(&_nis_state),
&_nis_state.current, &_nis_state.currentlen,
&data, &datalen)) {
rv = NS_UNAVAIL;
goto nisent_out;
}
}
data[datalen] = '\0'; /* clear trailing \n */
/* validate line */
if (_nis_parse(data, &_nis_passwd,
_nis_passwdbuf, sizeof(_nis_passwdbuf), &_nis_state))
rv = NS_SUCCESS;
else { /* dodgy entry, try again */
free(data);
goto next_nis_entry;
}
nisent_out:
if (key)
free(key);
if (data)
free(data);
if (rv == NS_SUCCESS)
*retval = &_nis_passwd;
return rv;
}
/*ARGSUSED*/
static int
_nis_getpwent_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
char *key, *data;
int keylen, datalen, rv, nisr;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*retval = 0;
if (_nis_state.done) /* exhausted search */
return NS_NOTFOUND;
if (_nis_state.domain == NULL) {
/* only start if NIS not setup */
rv = _nis_start(&_nis_state);
if (rv != NS_SUCCESS)
return rv;
}
next_nis_entry:
key = NULL;
data = NULL;
rv = NS_NOTFOUND;
if (_nis_state.current) { /* already searching */
nisr = yp_next(_nis_state.domain, PASSWD_BYNAME(&_nis_state),
_nis_state.current, _nis_state.currentlen,
&key, &keylen, &data, &datalen);
free(_nis_state.current);
_nis_state.current = NULL;
switch (nisr) {
case 0:
_nis_state.current = key;
_nis_state.currentlen = keylen;
key = NULL;
break;
case YPERR_NOMORE:
_nis_state.done = 1;
goto nisent_out;
default:
rv = NS_UNAVAIL;
goto nisent_out;
}
} else { /* new search */
if (yp_first(_nis_state.domain, PASSWD_BYNAME(&_nis_state),
&_nis_state.current, &_nis_state.currentlen,
&data, &datalen)) {
rv = NS_UNAVAIL;
goto nisent_out;
}
}
data[datalen] = '\0'; /* clear trailing \n */
/* validate line */
if (_nis_parse(data, pw, buffer, buflen, &_nis_state))
rv = NS_SUCCESS;
else { /* dodgy entry, try again */
if (key)
free(key);
free(data);
goto next_nis_entry;
}
nisent_out:
if (key)
free(key);
if (data)
free(data);
if (rv == NS_SUCCESS)
*result = pw;
else
*result = NULL;
return rv;
}
/*ARGSUSED*/
static int
_nis_getpwuid(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
uid_t uid = va_arg(ap, uid_t);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _nis_start(&_nis_state);
if (rv != NS_SUCCESS)
return rv;
snprintf(_nis_passwdbuf, sizeof(_nis_passwdbuf), "%u", (unsigned int)uid);
rv = _nis_pwscan(&rerror, &_nis_passwd,
_nis_passwdbuf, sizeof(_nis_passwdbuf),
&_nis_state, __nis_pw_u_map, __arraycount(__nis_pw_u_map));
if (!_nis_state.stayopen)
_nis_end(&_nis_state);
if (rv == NS_SUCCESS && uid == _nis_passwd.pw_uid)
*retval = &_nis_passwd;
return rv;
}
/*ARGSUSED*/
static int
_nis_getpwuid_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
uid_t uid = va_arg(ap, uid_t);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct nis_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
snprintf(buffer, buflen, "%u", (unsigned int)uid);
/* remark: we run under a global mutex inside of this module ... */
if (_nis_state.stayopen)
{ /* use global state only if stayopen is set - otherwise we would blow up getpwent_r() ... */
rv = _nis_pwscan(retval, pw, buffer, buflen,
&_nis_state, __nis_pw_u_map, __arraycount(__nis_pw_u_map));
}
else
{ /* keep old semantic if no stayopen set - no need to call _nis_start() here - _nis_pwscan() will do it for us ... */
/* use same way as in getgrent.c ... */
memset(&state, 0, sizeof(state));
rv = _nis_pwscan(retval, pw, buffer, buflen,
&state, __nis_pw_u_map, __arraycount(__nis_pw_u_map));
_nis_end(&state);
}
if (rv != NS_SUCCESS)
return rv;
if (uid == pw->pw_uid) {
*result = pw;
return NS_SUCCESS;
} else
return NS_NOTFOUND;
}
/*ARGSUSED*/
static int
_nis_getpwnam(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
const char *name = va_arg(ap, const char *);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _nis_start(&_nis_state);
if (rv != NS_SUCCESS)
return rv;
snprintf(_nis_passwdbuf, sizeof(_nis_passwdbuf), "%s", name);
rv = _nis_pwscan(&rerror, &_nis_passwd,
_nis_passwdbuf, sizeof(_nis_passwdbuf),
&_nis_state, __nis_pw_n_map, __arraycount(__nis_pw_n_map));
if (!_nis_state.stayopen)
_nis_end(&_nis_state);
if (rv == NS_SUCCESS && strcmp(name, _nis_passwd.pw_name) == 0)
*retval = &_nis_passwd;
return rv;
}
/*ARGSUSED*/
static int
_nis_getpwnam_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
const char *name = va_arg(ap, const char *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct nis_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
snprintf(buffer, buflen, "%s", name);
/* remark: we run under a global mutex inside of this module ... */
if (_nis_state.stayopen)
{ /* use global state only if stayopen is set - otherwise we would blow up getpwent_r() ... */
rv = _nis_pwscan(retval, pw, buffer, buflen,
&_nis_state, __nis_pw_n_map, __arraycount(__nis_pw_n_map));
}
else
{ /* keep old semantic if no stayopen set - no need to call _nis_start() here - _nis_pwscan() will do it for us ... */
/* use same way as in getgrent.c ... */
memset(&state, 0, sizeof(state));
rv = _nis_pwscan(retval, pw, buffer, buflen,
&state, __nis_pw_n_map, __arraycount(__nis_pw_n_map));
_nis_end(&state);
}
if (rv != NS_SUCCESS)
return rv;
if (strcmp(name, pw->pw_name) == 0) {
*result = pw;
return NS_SUCCESS;
} else
return NS_NOTFOUND;
}
#endif /* YP */
#ifdef _PASSWD_COMPAT
/*
* compat methods
*/
/* state shared between compat methods */
struct compat_state {
int stayopen; /* see getpassent(3) */
DB *db; /* passwd DB */
int keynum; /* key counter, -1 if no more */
enum { /* current compat mode */
COMPAT_NOTOKEN = 0, /* no compat token present */
COMPAT_NONE, /* parsing normal pwd.db line */
COMPAT_FULL, /* parsing `+' entries */
COMPAT_USER, /* parsing `+name' entries */
COMPAT_NETGROUP /* parsing `+@netgroup' entries */
} mode;
char *user; /* COMPAT_USER "+name" */
DB *exclude; /* compat exclude DB */
struct passwd proto; /* proto passwd entry */
char protobuf[_GETPW_R_SIZE_MAX];
/* buffer for proto ptrs */
int protoflags; /* proto passwd flags */
int version;
};
static struct compat_state _compat_state;
/* storage for non _r functions */
static struct passwd _compat_passwd;
static char _compat_passwdbuf[_GETPW_R_SIZE_MAX];
static int
_compat_start(struct compat_state *state)
{
int rv;
_DIAGASSERT(state != NULL);
state->keynum = 0;
if (state->db == NULL) { /* not open yet */
DBT key, data;
DBT pkey, pdata;
char bf[MAXLOGNAME];
rv = _pw_opendb(&state->db, &state->version);
if (rv != NS_SUCCESS)
return rv;
state->mode = COMPAT_NOTOKEN;
/*
* Determine if the "compat" token is present in pwd.db;
* either "__YP!" or PW_KEYBYNAME+"+".
* Only works if pwd_mkdb installs the token.
*/
key.data = (u_char *)__UNCONST(__yp_token);
key.size = strlen(__yp_token);
bf[0] = _PW_KEYBYNAME; /* Pre-token database support. */
bf[1] = '+';
pkey.data = (u_char *)bf;
pkey.size = 2;
if ((state->db->get)(state->db, &key, &data, 0) == 0
|| (state->db->get)(state->db, &pkey, &pdata, 0) == 0)
state->mode = COMPAT_NONE;
}
return NS_SUCCESS;
}
static int
_compat_end(struct compat_state *state)
{
_DIAGASSERT(state != NULL);
state->keynum = 0;
if (state->db) {
(void)(state->db->close)(state->db);
state->db = NULL;
}
state->mode = COMPAT_NOTOKEN;
if (state->user)
free(state->user);
state->user = NULL;
if (state->exclude != NULL)
(void)(state->exclude->close)(state->exclude);
state->exclude = NULL;
state->proto.pw_name = NULL;
state->protoflags = 0;
return NS_SUCCESS;
}
/*
* _compat_add_exclude
* add the name to the exclude list in state->exclude.
*/
static int
_compat_add_exclude(struct compat_state *state, const char *name)
{
DBT key, data;
_DIAGASSERT(state != NULL);
_DIAGASSERT(name != NULL);
/* initialize the exclusion table if needed */
if (state->exclude == NULL) {
state->exclude = dbopen(NULL, O_RDWR, 600, DB_HASH, NULL);
if (state->exclude == NULL)
return 0;
}
key.size = strlen(name); /* set up the key */
key.data = (u_char *)__UNCONST(name);
data.data = NULL; /* data is nothing */
data.size = 0;
/* store it */
if ((state->exclude->put)(state->exclude, &key, &data, 0) == -1)
return 0;
return 1;
}
/*
* _compat_is_excluded
* test if a name is on the compat mode exclude list
*/
static int
_compat_is_excluded(struct compat_state *state, const char *name)
{
DBT key, data;
_DIAGASSERT(state != NULL);
_DIAGASSERT(name != NULL);
if (state->exclude == NULL)
return 0; /* nothing excluded */
key.size = strlen(name); /* set up the key */
key.data = (u_char *)__UNCONST(name);
if ((state->exclude->get)(state->exclude, &key, &data, 0) == 0)
return 1; /* is excluded */
return 0;
}
/*
* _passwdcompat_bad
* log an error if "files" or "compat" is specified in
* passwd_compat database
*/
/*ARGSUSED*/
static int
_passwdcompat_bad(void *nsrv, void *nscb, va_list ap)
{
static int warned;
_DIAGASSERT(nsrv != NULL);
_DIAGASSERT(nscb != NULL);
if (!warned) {
syslog(LOG_ERR,
"nsswitch.conf passwd_compat database can't use '%s'",
(char *)nscb);
}
warned = 1;
return NS_UNAVAIL;
}
/*
* _passwdcompat_setpassent
* Call setpassent for all passwd_compat sources.
*/
static int
_passwdcompat_setpassent(int stayopen)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_passwdcompat_bad, "files")
NS_DNS_CB(_dns_setpassent, NULL)
NS_NIS_CB(_nis_setpassent, NULL)
NS_COMPAT_CB(_passwdcompat_bad, "compat")
NS_NULL_CB
};
int rv, result;
rv = nsdispatch(NULL, dtab, NSDB_PASSWD_COMPAT, "setpassent",
__nsdefaultnis_forceall, &result, stayopen);
return rv;
}
/*
* _passwdcompat_endpwent
* Call endpwent for all passwd_compat sources.
*/
static int
_passwdcompat_endpwent(void)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_passwdcompat_bad, "files")
NS_DNS_CB(_dns_endpwent, NULL)
NS_NIS_CB(_nis_endpwent, NULL)
NS_COMPAT_CB(_passwdcompat_bad, "compat")
NS_NULL_CB
};
return nsdispatch(NULL, dtab, NSDB_PASSWD_COMPAT, "endpwent",
__nsdefaultnis_forceall);
}
/*
* _passwdcompat_pwscan
* When a name lookup in compat mode is required (e.g., `+name', or a
* name in `+@netgroup'), look it up in the 'passwd_compat' nsswitch
* database.
* Fail if passwd_compat contains files or compat.
*/
static int
_passwdcompat_pwscan(struct passwd *pw, char *buffer, size_t buflen,
int search, const char *name, uid_t uid)
{
static const ns_dtab compatentdtab[] = {
NS_FILES_CB(_passwdcompat_bad, "files")
NS_DNS_CB(_dns_getpwent_r, NULL)
NS_NIS_CB(_nis_getpwent_r, NULL)
NS_COMPAT_CB(_passwdcompat_bad, "compat")
NS_NULL_CB
};
static const ns_dtab compatuiddtab[] = {
NS_FILES_CB(_passwdcompat_bad, "files")
NS_DNS_CB(_dns_getpwuid_r, NULL)
NS_NIS_CB(_nis_getpwuid_r, NULL)
NS_COMPAT_CB(_passwdcompat_bad, "compat")
NS_NULL_CB
};
static const ns_dtab compatnamdtab[] = {
NS_FILES_CB(_passwdcompat_bad, "files")
NS_DNS_CB(_dns_getpwnam_r, NULL)
NS_NIS_CB(_nis_getpwnam_r, NULL)
NS_COMPAT_CB(_passwdcompat_bad, "compat")
NS_NULL_CB
};
int rv, crv;
struct passwd *cpw;
switch (search) {
case _PW_KEYBYNUM:
rv = nsdispatch(NULL, compatentdtab,
NSDB_PASSWD_COMPAT, "getpwent_r", __nsdefaultnis,
&crv, pw, buffer, buflen, &cpw);
break;
case _PW_KEYBYNAME:
_DIAGASSERT(name != NULL);
rv = nsdispatch(NULL, compatnamdtab,
NSDB_PASSWD_COMPAT, "getpwnam_r", __nsdefaultnis,
&crv, name, pw, buffer, buflen, &cpw);
break;
case _PW_KEYBYUID:
rv = nsdispatch(NULL, compatuiddtab,
NSDB_PASSWD_COMPAT, "getpwuid_r", __nsdefaultnis,
&crv, uid, pw, buffer, buflen, &cpw);
break;
default:
abort();
/*NOTREACHED*/
}
return rv;
}
/*
* _compat_pwscan
* Search state->db for the next desired entry.
* If search is _PW_KEYBYNUM, look for state->keynum.
* If search is _PW_KEYBYNAME, look for name.
* If search is _PW_KEYBYUID, look for uid.
* Sets *retval to the errno if the result is not NS_SUCCESS
* or NS_NOTFOUND.
*/
static int
_compat_pwscan(int *retval, struct passwd *pw, char *buffer, size_t buflen,
struct compat_state *state, int search, const char *name, uid_t uid)
{
DBT key;
int rv, r, pwflags;
const char *user, *host, *dom;
const void *from;
size_t fromlen;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(state != NULL);
/* name may be NULL */
*retval = 0;
if (state->db == NULL) {
rv = _compat_start(state);
if (rv != NS_SUCCESS)
return rv;
}
if (buflen <= 1) { /* buffer too small */
*retval = ERANGE;
return NS_UNAVAIL;
}
for (;;) { /* loop over pwd.db */
rv = NS_NOTFOUND;
if (state->mode != COMPAT_NOTOKEN &&
state->mode != COMPAT_NONE) {
/* doing a compat lookup */
struct passwd cpw;
char cbuf[_GETPW_R_SIZE_MAX];
switch (state->mode) {
case COMPAT_FULL:
/* get next user or lookup by key */
rv = _passwdcompat_pwscan(&cpw,
cbuf, sizeof(cbuf), search, name, uid);
if (rv != NS_SUCCESS)
state->mode = COMPAT_NONE;
break;
case COMPAT_NETGROUP:
/* XXXREENTRANT: getnetgrent is not thread safe */
/* get next user from netgroup */
r = getnetgrent(&host, &user, &dom);
if (r == 0) { /* end of group */
endnetgrent();
state->mode = COMPAT_NONE;
break;
}
if (!user || !*user)
break;
rv = _passwdcompat_pwscan(&cpw,
cbuf, sizeof(cbuf),
_PW_KEYBYNAME, user, 0);
break;
case COMPAT_USER:
/* get specific user */
if (state->user == NULL) {
state->mode = COMPAT_NONE;
break;
}
rv = _passwdcompat_pwscan(&cpw,
cbuf, sizeof(cbuf),
_PW_KEYBYNAME, state->user, 0);
free(state->user);
state->user = NULL;
state->mode = COMPAT_NONE;
break;
case COMPAT_NOTOKEN:
case COMPAT_NONE:
abort();
}
if (rv != NS_SUCCESS) /* if not matched, next loop */
continue;
/* copy cpw to pw, applying prototype */
if (! _pw_copy(&cpw, pw, buffer, buflen,
&state->proto, state->protoflags)) {
rv = NS_UNAVAIL;
break;
}
if (_compat_is_excluded(state, pw->pw_name))
continue; /* excluded; next loop */
if ((search == _PW_KEYBYNAME
&& strcmp(pw->pw_name, name) != 0)
|| (search == _PW_KEYBYUID && pw->pw_uid != uid)) {
continue; /* not specific; next loop */
}
break; /* exit loop if found */
} else { /* not a compat line */
state->proto.pw_name = NULL;
/* clear prototype */
}
if (state->mode == COMPAT_NOTOKEN) {
/* no compat token; do direct lookup */
switch (search) {
case _PW_KEYBYNUM:
if (state->keynum == -1) /* no more records */
return NS_NOTFOUND;
state->keynum++;
from = &state->keynum;
fromlen = sizeof(state->keynum);
break;
case _PW_KEYBYNAME:
from = name;
fromlen = strlen(name);
break;
case _PW_KEYBYUID:
from = &uid;
fromlen = sizeof(uid);
break;
default:
abort();
}
buffer[0] = search;
} else {
/* compat token; do line by line */
if (state->keynum == -1) /* no more records */
return NS_NOTFOUND;
state->keynum++;
from = &state->keynum;
fromlen = sizeof(state->keynum);
buffer[0] = _PW_KEYBYNUM;
}
if (buflen <= fromlen) { /* buffer too small */
*retval = ERANGE;
return NS_UNAVAIL;
}
memmove(buffer + 1, from, fromlen); /* setup key */
key.size = fromlen + 1;
key.data = (u_char *)buffer;
rv = _pw_getkey(state->db, &key, pw, buffer, buflen, &pwflags,
state->version);
if (rv != NS_SUCCESS) /* stop on error */
break;
if (state->mode == COMPAT_NOTOKEN)
break; /* stop if no compat token */
if (pw->pw_name[0] == '+') {
/* compat inclusion */
switch(pw->pw_name[1]) {
case '\0': /* `+' */
state->mode = COMPAT_FULL;
/* reset passwd_compat search */
/* XXXREENTRANT: setpassent is not thread safe ? */
(void) _passwdcompat_setpassent(_compat_state.stayopen);
break;
case '@': /* `+@netgroup' */
state->mode = COMPAT_NETGROUP;
/* reset netgroup search */
/* XXXREENTRANT: setnetgrent is not thread safe */
setnetgrent(pw->pw_name + 2);
break;
default: /* `+name' */
state->mode = COMPAT_USER;
if (state->user)
free(state->user);
state->user = strdup(pw->pw_name + 1);
break;
}
/* save the prototype */
state->protoflags = pwflags;
if (! _pw_copy(pw, &state->proto, state->protobuf,
sizeof(state->protobuf), NULL, 0)) {
rv = NS_UNAVAIL;
break;
}
continue; /* loop again after inclusion */
} else if (pw->pw_name[0] == '-') {
/* compat exclusion */
rv = NS_SUCCESS;
switch(pw->pw_name[1]) {
case '\0': /* `-' */
break;
case '@': /* `-@netgroup' */
/* XXXREENTRANT: {set,get,end}netgrent is not thread safe */
setnetgrent(pw->pw_name + 2);
while (getnetgrent(&host, &user, &dom)) {
if (!user || !*user)
continue;
if (! _compat_add_exclude(state,user)) {
rv = NS_UNAVAIL;
break;
}
}
endnetgrent();
break;
default: /* `-name' */
if (! _compat_add_exclude(state,
pw->pw_name + 1)) {
rv = NS_UNAVAIL;
}
break;
}
if (rv != NS_SUCCESS) /* exclusion failure */
break;
continue; /* loop again after exclusion */
}
if (search == _PW_KEYBYNUM ||
(search == _PW_KEYBYUID && pw->pw_uid == uid) ||
(search == _PW_KEYBYNAME && strcmp(pw->pw_name, name) == 0))
break; /* token mode match found */
}
if (rv == NS_NOTFOUND &&
(search == _PW_KEYBYNUM || state->mode != COMPAT_NOTOKEN))
state->keynum = -1; /* flag `no more records' */
if (rv == NS_SUCCESS) {
if ((search == _PW_KEYBYNAME && strcmp(pw->pw_name, name) != 0)
|| (search == _PW_KEYBYUID && pw->pw_uid != uid))
rv = NS_NOTFOUND;
}
if (rv != NS_SUCCESS && rv != NS_NOTFOUND)
*retval = errno;
return rv;
}
/*ARGSUSED*/
static int
_compat_setpwent(void *nsrv, void *nscb, va_list ap)
{
/* force passwd_compat setpwent() */
(void) _passwdcompat_setpassent(0);
/* reset state, keep db open */
_compat_state.stayopen = 0;
return _compat_start(&_compat_state);
}
/*ARGSUSED*/
static int
_compat_setpassent(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
int stayopen = va_arg(ap, int);
int rv;
/* force passwd_compat setpassent() */
(void) _passwdcompat_setpassent(stayopen);
_compat_state.stayopen = stayopen;
rv = _compat_start(&_compat_state);
*retval = (rv == NS_SUCCESS);
return rv;
}
/*ARGSUSED*/
static int
_compat_endpwent(void *nsrv, void *nscb, va_list ap)
{
/* force passwd_compat endpwent() */
(void) _passwdcompat_endpwent();
/* reset state, close db */
_compat_state.stayopen = 0;
return _compat_end(&_compat_state);
}
/*ARGSUSED*/
static int
_compat_getpwent(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _compat_pwscan(&rerror, &_compat_passwd,
_compat_passwdbuf, sizeof(_compat_passwdbuf),
&_compat_state, _PW_KEYBYNUM, NULL, 0);
if (rv == NS_SUCCESS)
*retval = &_compat_passwd;
return rv;
}
/*ARGSUSED*/
static int
_compat_getpwent_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
rv = _compat_pwscan(retval, pw, buffer, buflen, &_compat_state,
_PW_KEYBYNUM, NULL, 0);
if (rv == NS_SUCCESS)
*result = pw;
else
*result = NULL;
return rv;
}
/*ARGSUSED*/
static int
_compat_getpwnam(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
const char *name = va_arg(ap, const char *);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _compat_start(&_compat_state);
if (rv != NS_SUCCESS)
return rv;
rv = _compat_pwscan(&rerror, &_compat_passwd,
_compat_passwdbuf, sizeof(_compat_passwdbuf),
&_compat_state, _PW_KEYBYNAME, name, 0);
if (!_compat_state.stayopen)
_compat_end(&_compat_state);
if (rv == NS_SUCCESS)
*retval = &_compat_passwd;
return rv;
}
/*ARGSUSED*/
static int
_compat_getpwnam_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
const char *name = va_arg(ap, const char *);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct compat_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
memset(&state, 0, sizeof(state));
rv = _compat_pwscan(retval, pw, buffer, buflen, &state,
_PW_KEYBYNAME, name, 0);
_compat_end(&state);
if (rv == NS_SUCCESS)
*result = pw;
return rv;
}
/*ARGSUSED*/
static int
_compat_getpwuid(void *nsrv, void *nscb, va_list ap)
{
struct passwd **retval = va_arg(ap, struct passwd **);
uid_t uid = va_arg(ap, uid_t);
int rv, rerror;
_DIAGASSERT(retval != NULL);
*retval = NULL;
rv = _compat_start(&_compat_state);
if (rv != NS_SUCCESS)
return rv;
rv = _compat_pwscan(&rerror, &_compat_passwd,
_compat_passwdbuf, sizeof(_compat_passwdbuf),
&_compat_state, _PW_KEYBYUID, NULL, uid);
if (!_compat_state.stayopen)
_compat_end(&_compat_state);
if (rv == NS_SUCCESS)
*retval = &_compat_passwd;
return rv;
}
/*ARGSUSED*/
static int
_compat_getpwuid_r(void *nsrv, void *nscb, va_list ap)
{
int *retval = va_arg(ap, int *);
uid_t uid = va_arg(ap, uid_t);
struct passwd *pw = va_arg(ap, struct passwd *);
char *buffer = va_arg(ap, char *);
size_t buflen = va_arg(ap, size_t);
struct passwd **result = va_arg(ap, struct passwd **);
struct compat_state state;
int rv;
_DIAGASSERT(retval != NULL);
_DIAGASSERT(pw != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
memset(&state, 0, sizeof(state));
rv = _compat_pwscan(retval, pw, buffer, buflen, &state,
_PW_KEYBYUID, NULL, uid);
_compat_end(&state);
if (rv == NS_SUCCESS)
*result = pw;
return rv;
}
#endif /* _PASSWD_COMPAT */
/*
* public functions
*/
struct passwd *
getpwent(void)
{
int r;
struct passwd *retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getpwent, NULL)
NS_DNS_CB(_dns_getpwent, NULL)
NS_NIS_CB(_nis_getpwent, NULL)
NS_COMPAT_CB(_compat_getpwent, NULL)
NS_NULL_CB
};
mutex_lock(&_pwmutex);
r = nsdispatch(NULL, dtab, NSDB_PASSWD, "getpwent", __nsdefaultcompat,
&retval);
mutex_unlock(&_pwmutex);
return (r == NS_SUCCESS) ? retval : NULL;
}
int
getpwent_r(struct passwd *pwd, char *buffer, size_t buflen,
struct passwd **result)
{
int r, retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getpwent_r, NULL)
NS_DNS_CB(_dns_getpwent_r, NULL)
NS_NIS_CB(_nis_getpwent_r, NULL)
NS_COMPAT_CB(_compat_getpwent_r, NULL)
NS_NULL_CB
};
_DIAGASSERT(pwd != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
retval = 0;
mutex_lock(&_pwmutex);
r = nsdispatch(NULL, dtab, NSDB_PASSWD, "getpwent_r", __nsdefaultcompat,
&retval, pwd, buffer, buflen, result);
mutex_unlock(&_pwmutex);
switch (r) {
case NS_SUCCESS:
case NS_NOTFOUND:
return 0;
default:
return retval;
}
}
struct passwd *
getpwnam(const char *name)
{
int rv;
struct passwd *retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getpwnam, NULL)
NS_DNS_CB(_dns_getpwnam, NULL)
NS_NIS_CB(_nis_getpwnam, NULL)
NS_COMPAT_CB(_compat_getpwnam, NULL)
NS_NULL_CB
};
mutex_lock(&_pwmutex);
rv = nsdispatch(NULL, dtab, NSDB_PASSWD, "getpwnam", __nsdefaultcompat,
&retval, name);
mutex_unlock(&_pwmutex);
return (rv == NS_SUCCESS) ? retval : NULL;
}
int
getpwnam_r(const char *name, struct passwd *pwd, char *buffer, size_t buflen,
struct passwd **result)
{
int r, retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getpwnam_r, NULL)
NS_DNS_CB(_dns_getpwnam_r, NULL)
NS_NIS_CB(_nis_getpwnam_r, NULL)
NS_COMPAT_CB(_compat_getpwnam_r, NULL)
NS_NULL_CB
};
_DIAGASSERT(name != NULL);
_DIAGASSERT(pwd != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
retval = 0;
mutex_lock(&_pwmutex);
r = nsdispatch(NULL, dtab, NSDB_PASSWD, "getpwnam_r", __nsdefaultcompat,
&retval, name, pwd, buffer, buflen, result);
mutex_unlock(&_pwmutex);
switch (r) {
case NS_SUCCESS:
case NS_NOTFOUND:
return 0;
default:
return retval;
}
}
struct passwd *
getpwuid(uid_t uid)
{
int rv;
struct passwd *retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getpwuid, NULL)
NS_DNS_CB(_dns_getpwuid, NULL)
NS_NIS_CB(_nis_getpwuid, NULL)
NS_COMPAT_CB(_compat_getpwuid, NULL)
NS_NULL_CB
};
mutex_lock(&_pwmutex);
rv = nsdispatch(NULL, dtab, NSDB_PASSWD, "getpwuid", __nsdefaultcompat,
&retval, uid);
mutex_unlock(&_pwmutex);
return (rv == NS_SUCCESS) ? retval : NULL;
}
int
getpwuid_r(uid_t uid, struct passwd *pwd, char *buffer, size_t buflen,
struct passwd **result)
{
int r, retval;
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_getpwuid_r, NULL)
NS_DNS_CB(_dns_getpwuid_r, NULL)
NS_NIS_CB(_nis_getpwuid_r, NULL)
NS_COMPAT_CB(_compat_getpwuid_r, NULL)
NS_NULL_CB
};
_DIAGASSERT(pwd != NULL);
_DIAGASSERT(buffer != NULL);
_DIAGASSERT(result != NULL);
*result = NULL;
retval = 0;
mutex_lock(&_pwmutex);
r = nsdispatch(NULL, dtab, NSDB_PASSWD, "getpwuid_r", __nsdefaultcompat,
&retval, uid, pwd, buffer, buflen, result);
mutex_unlock(&_pwmutex);
switch (r) {
case NS_SUCCESS:
case NS_NOTFOUND:
return 0;
default:
return retval;
}
}
void
endpwent(void)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_endpwent, NULL)
NS_DNS_CB(_dns_endpwent, NULL)
NS_NIS_CB(_nis_endpwent, NULL)
NS_COMPAT_CB(_compat_endpwent, NULL)
NS_NULL_CB
};
mutex_lock(&_pwmutex);
/* force all endpwent() methods */
(void) nsdispatch(NULL, dtab, NSDB_PASSWD, "endpwent",
__nsdefaultcompat_forceall);
mutex_unlock(&_pwmutex);
}
/*ARGSUSED*/
int
setpassent(int stayopen)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_setpassent, NULL)
NS_DNS_CB(_dns_setpassent, NULL)
NS_NIS_CB(_nis_setpassent, NULL)
NS_COMPAT_CB(_compat_setpassent, NULL)
NS_NULL_CB
};
int rv, retval;
mutex_lock(&_pwmutex);
/* force all setpassent() methods */
rv = nsdispatch(NULL, dtab, NSDB_PASSWD, "setpassent",
__nsdefaultcompat_forceall, &retval, stayopen);
mutex_unlock(&_pwmutex);
return (rv == NS_SUCCESS) ? retval : 0;
}
void
setpwent(void)
{
static const ns_dtab dtab[] = {
NS_FILES_CB(_files_setpwent, NULL)
NS_DNS_CB(_dns_setpwent, NULL)
NS_NIS_CB(_nis_setpwent, NULL)
NS_COMPAT_CB(_compat_setpwent, NULL)
NS_NULL_CB
};
mutex_lock(&_pwmutex);
/* force all setpwent() methods */
(void) nsdispatch(NULL, dtab, NSDB_PASSWD, "setpwent",
__nsdefaultcompat_forceall);
mutex_unlock(&_pwmutex);
}
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