* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")

/* $NetBSD: getpwent.c,v 1.1.1.2 2012/09/09 16:07:55 christos Exp $ */

/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#if !defined(LINT) && !defined(CODECENTER)
static const char rcsid[] = "Id: getpwent.c,v 1.3 2005/04/27 04:56:26 sra Exp ";
#endif

/* Imports */

#include "port_before.h"

#if !defined(WANT_IRS_PW) || defined(__BIND_NOSTATIC)
static int __bind_irs_pw_unneeded;
#else

#include <sys/types.h>

#include <netinet/in.h>
#include <arpa/nameser.h>

#include <errno.h>
#include <pwd.h>
#include <resolv.h>
#include <stdio.h>
#include <string.h>

#include <irs.h>

#include "port_after.h"

#include "irs_data.h"

/* Forward */

static struct net_data * init(void);

/* Public */

struct passwd *
getpwent(void) {
struct net_data *net_data = init();

return (getpwent_p(net_data));
}

struct passwd *
getpwnam(const char *name) {
struct net_data *net_data = init();

return (getpwnam_p(name, net_data));
}

struct passwd *
getpwuid(uid_t uid) {
struct net_data *net_data = init();

return (getpwuid_p(uid, net_data));
}

int
setpassent(int stayopen) {
struct net_data *net_data = init();

return (setpassent_p(stayopen, net_data));
}

#ifdef SETPWENT_VOID
void
setpwent() {
struct net_data *net_data = init();

setpwent_p(net_data);
}
#else
int
setpwent() {
struct net_data *net_data = init();

return (setpwent_p(net_data));
}
#endif

void
endpwent() {
struct net_data *net_data = init();

endpwent_p(net_data);
}

/* Shared private. */

struct passwd *
getpwent_p(struct net_data *net_data) {
struct irs_pw *pw;

if (!net_data || !(pw = net_data->pw))
return (NULL);
net_data->pw_last = (*pw->next)(pw);
return (net_data->pw_last);
}

struct passwd *
getpwnam_p(const char *name, struct net_data *net_data) {
struct irs_pw *pw;

if (!net_data || !(pw = net_data->pw))
return (NULL);
if (net_data->pw_stayopen && net_data->pw_last &&
!strcmp(net_data->pw_last->pw_name, name))
return (net_data->pw_last);
net_data->pw_last = (*pw->byname)(pw, name);
if (!net_data->pw_stayopen)
endpwent();
return (net_data->pw_last);
}

struct passwd *
getpwuid_p(uid_t uid, struct net_data *net_data) {
struct irs_pw *pw;

if (!net_data || !(pw = net_data->pw))
return (NULL);
if (net_data->pw_stayopen && net_data->pw_last &&
net_data->pw_last->pw_uid == uid)
return (net_data->pw_last);
net_data->pw_last = (*pw->byuid)(pw, uid);
if (!net_data->pw_stayopen)
endpwent();
return (net_data->pw_last);
}

int
setpassent_p(int stayopen, struct net_data *net_data) {
struct irs_pw *pw;

if (!net_data || !(pw = net_data->pw))
return (0);
(*pw->rewind)(pw);
net_data->pw_stayopen = (stayopen != 0);
if (stayopen == 0)
net_data_minimize(net_data);
return (1);
}

#ifdef SETPWENT_VOID
void
setpwent_p(struct net_data *net_data) {
(void) setpassent_p(0, net_data);
}
#else
int
setpwent_p(struct net_data *net_data) {
return (setpassent_p(0, net_data));
}
#endif

void
endpwent_p(struct net_data *net_data) {
struct irs_pw *pw;

if ((net_data != NULL) && ((pw = net_data->pw) != NULL))
(*pw->minimize)(pw);
}

/* Private */

static struct net_data *
init() {
struct net_data *net_data;
if (!(net_data = net_data_init(NULL)))
goto error;
if (!net_data->pw) {
net_data->pw = (*net_data->irs->pw_map)(net_data->irs);

if (!net_data->pw || !net_data->res) {
error:
errno = EIO;
return (NULL);
}
(*net_data->pw->res_set)(net_data->pw, net_data->res, NULL);
}

return (net_data);
}

#endif /* WANT_IRS_PW */
/*! \file */