NetBSD/dist/bind/lib/irs/getpwent.c

202 lines
4.1 KiB
C

/* $NetBSD: getpwent.c,v 1.2 2001/01/27 07:22:03 itojun Exp $ */
/*
* 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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 1.21 2000/02/21 21:40:56 vixie 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 <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 */