1/*
2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1996,1999 by Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#if !defined(LINT) && !defined(CODECENTER)
19static const char rcsid[] = "$Id: getpwent.c,v 1.3 2005/04/27 04:56:26 sra Exp $";
20#endif
21
22/* Imports */
23
24#include "port_before.h"
25
26#if !defined(WANT_IRS_PW) || defined(__BIND_NOSTATIC)
27static int __bind_irs_pw_unneeded;
28#else
29
30#include <sys/types.h>
31
32#include <netinet/in.h>
33#include <arpa/nameser.h>
34
35#include <errno.h>
36#include <pwd.h>
37#include <resolv.h>
38#include <stdio.h>
39#include <string.h>
40
41#include <irs.h>
42
43#include "port_after.h"
44
45#include "irs_data.h"
46
47/* Forward */
48
49static struct net_data * init(void);
50
51/* Public */
52
53struct passwd *
54getpwent(void) {
55	struct net_data *net_data = init();
56
57	return (getpwent_p(net_data));
58}
59
60struct passwd *
61getpwnam(const char *name) {
62	struct net_data *net_data = init();
63
64	return (getpwnam_p(name, net_data));
65}
66
67struct passwd *
68getpwuid(uid_t uid) {
69	struct net_data *net_data = init();
70
71	return (getpwuid_p(uid, net_data));
72}
73
74int
75setpassent(int stayopen) {
76	struct net_data *net_data = init();
77
78	return (setpassent_p(stayopen, net_data));
79}
80
81#ifdef SETPWENT_VOID
82void
83setpwent() {
84	struct net_data *net_data = init();
85
86	setpwent_p(net_data);
87}
88#else
89int
90setpwent() {
91	struct net_data *net_data = init();
92
93	return (setpwent_p(net_data));
94}
95#endif
96
97void
98endpwent() {
99	struct net_data *net_data = init();
100
101	endpwent_p(net_data);
102}
103
104/* Shared private. */
105
106struct passwd *
107getpwent_p(struct net_data *net_data) {
108	struct irs_pw *pw;
109
110	if (!net_data || !(pw = net_data->pw))
111		return (NULL);
112	net_data->pw_last = (*pw->next)(pw);
113	return (net_data->pw_last);
114}
115
116struct passwd *
117getpwnam_p(const char *name, struct net_data *net_data) {
118	struct irs_pw *pw;
119
120	if (!net_data || !(pw = net_data->pw))
121		return (NULL);
122	if (net_data->pw_stayopen && net_data->pw_last &&
123	    !strcmp(net_data->pw_last->pw_name, name))
124		return (net_data->pw_last);
125	net_data->pw_last = (*pw->byname)(pw, name);
126	if (!net_data->pw_stayopen)
127		endpwent();
128	return (net_data->pw_last);
129}
130
131struct passwd *
132getpwuid_p(uid_t uid, struct net_data *net_data) {
133	struct irs_pw *pw;
134
135	if (!net_data || !(pw = net_data->pw))
136		return (NULL);
137	if (net_data->pw_stayopen && net_data->pw_last &&
138	    net_data->pw_last->pw_uid == uid)
139		return (net_data->pw_last);
140	net_data->pw_last = (*pw->byuid)(pw, uid);
141	if (!net_data->pw_stayopen)
142		endpwent();
143	return (net_data->pw_last);
144}
145
146int
147setpassent_p(int stayopen, struct net_data *net_data) {
148	struct irs_pw *pw;
149
150	if (!net_data || !(pw = net_data->pw))
151		return (0);
152	(*pw->rewind)(pw);
153	net_data->pw_stayopen = (stayopen != 0);
154	if (stayopen == 0)
155		net_data_minimize(net_data);
156	return (1);
157}
158
159#ifdef SETPWENT_VOID
160void
161setpwent_p(struct net_data *net_data) {
162	(void) setpassent_p(0, net_data);
163}
164#else
165int
166setpwent_p(struct net_data *net_data) {
167	return (setpassent_p(0, net_data));
168}
169#endif
170
171void
172endpwent_p(struct net_data *net_data) {
173	struct irs_pw *pw;
174
175	if ((net_data != NULL) && ((pw = net_data->pw) != NULL))
176		(*pw->minimize)(pw);
177}
178
179/* Private */
180
181static struct net_data *
182init() {
183	struct net_data *net_data;
184	if (!(net_data = net_data_init(NULL)))
185		goto error;
186	if (!net_data->pw) {
187		net_data->pw = (*net_data->irs->pw_map)(net_data->irs);
188
189		if (!net_data->pw || !net_data->res) {
190 error:
191			errno = EIO;
192			return (NULL);
193		}
194		(*net_data->pw->res_set)(net_data->pw, net_data->res, NULL);
195	}
196
197	return (net_data);
198}
199
200#endif /* WANT_IRS_PW */
201/*! \file */
202