2 * Copyright (c) 1989, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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35 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
36 * Portions Copyright (c) 1996,1999 by Internet Software Consortium.
38 * Permission to use, copy, modify, and distribute this software for any
39 * purpose with or without fee is hereby granted, provided that the above
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42 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
43 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
44 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
45 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
46 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
47 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
48 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
51 #if defined(LIBC_SCCS) && !defined(lint)
52 static const char rcsid[] = "$Id: lcl_pw.c,v 1.1.206.1 2004/03/09 08:33:38 marka Exp $";
53 #endif /* LIBC_SCCS and not lint */
57 #include "port_before.h"
60 static int __bind_irs_pw_unneeded;
63 #include <sys/param.h>
64 #include <sys/types.h>
65 #include <netinet/in.h>
66 #include <arpa/nameser.h>
80 #include <isc/memcluster.h>
83 #include "port_after.h"
89 * The lookup techniques and data extraction code here must be kept
90 * in sync with that in `pwd_mkdb'.
97 struct passwd passwd; /* password structure */
98 DB *pw_db; /* password database */
99 int pw_keynum; /* key counter */
107 static void pw_close(struct irs_pw *);
108 static struct passwd * pw_next(struct irs_pw *);
109 static struct passwd * pw_byname(struct irs_pw *, const char *);
110 static struct passwd * pw_byuid(struct irs_pw *, uid_t);
111 static void pw_rewind(struct irs_pw *);
112 static void pw_minimize(struct irs_pw *);
114 static int initdb(struct pvt *);
115 static int hashpw(struct irs_pw *, DBT *);
119 irs_lcl_pw(struct irs_acc *this) {
125 if (!(pw = memget(sizeof *pw))) {
129 memset(pw, 0x5e, sizeof *pw);
130 if (!(pvt = memget(sizeof *pvt))) {
135 memset(pvt, 0, sizeof *pvt);
137 pw->close = pw_close;
139 pw->byname = pw_byname;
140 pw->byuid = pw_byuid;
141 pw->rewind = pw_rewind;
142 pw->minimize = pw_minimize;
151 pw_close(struct irs_pw *this) {
152 struct pvt *pvt = (struct pvt *)this->private;
155 (void)(pvt->pw_db->close)(pvt->pw_db);
159 memput(pvt->line, pvt->max);
160 memput(pvt, sizeof *pvt);
161 memput(this, sizeof *this);
164 static struct passwd *
165 pw_next(struct irs_pw *this) {
166 struct pvt *pvt = (struct pvt *)this->private;
169 char bf[sizeof(pvt->pw_keynum) + 1];
175 bf[0] = _PW_KEYBYNUM;
176 memcpy(bf + 1, (char *)&pvt->pw_keynum, sizeof(pvt->pw_keynum));
177 key.data = (u_char *)bf;
178 key.size = sizeof(pvt->pw_keynum) + 1;
179 return (hashpw(this, &key) ? &pvt->passwd : NULL);
182 static struct passwd *
183 pw_byname(struct irs_pw *this, const char *name) {
184 struct pvt *pvt = (struct pvt *)this->private;
187 char bf[UT_NAMESIZE + 1];
192 bf[0] = _PW_KEYBYNAME;
194 memcpy(bf + 1, name, MIN(len, UT_NAMESIZE));
195 key.data = (u_char *)bf;
197 rval = hashpw(this, &key);
199 return (rval ? &pvt->passwd : NULL);
203 static struct passwd *
204 pw_byuid(struct irs_pw *this, uid_t uid) {
205 struct pvt *pvt = (struct pvt *)this->private;
208 char bf[sizeof(keyuid) + 1];
213 bf[0] = _PW_KEYBYUID;
215 memcpy(bf + 1, &keyuid, sizeof(keyuid));
216 key.data = (u_char *)bf;
217 key.size = sizeof(keyuid) + 1;
218 rval = hashpw(this, &key);
220 return (rval ? &pvt->passwd : NULL);
224 pw_rewind(struct irs_pw *this) {
225 struct pvt *pvt = (struct pvt *)this->private;
231 pw_minimize(struct irs_pw *this) {
232 struct pvt *pvt = (struct pvt *)this->private;
234 if (pvt->pw_db != NULL) {
235 (void) (*pvt->pw_db->close)(pvt->pw_db);
243 initdb(struct pvt *pvt) {
247 if (lseek((*pvt->pw_db->fd)(pvt->pw_db), 0L, SEEK_CUR) >= 0L)
250 (void) (*pvt->pw_db->close)(pvt->pw_db);
252 pvt->pw_db = dbopen((p = _PATH_SMP_DB), O_RDONLY, 0, DB_HASH, NULL);
254 pvt->pw_db = dbopen((p =_PATH_MP_DB), O_RDONLY,
259 syslog(LOG_ERR, "%s: %m", p);
266 hashpw(struct irs_pw *this, DBT *key) {
267 struct pvt *pvt = (struct pvt *)this->private;
271 if ((pvt->pw_db->get)(pvt->pw_db, key, &data, 0))
273 p = (char *)data.data;
274 if (data.size > pvt->max) {
275 size_t newlen = pvt->max + 1024;
276 char *p = memget(newlen);
280 if (pvt->line != NULL) {
281 memcpy(p, pvt->line, pvt->max);
282 memput(pvt->line, pvt->max);
288 /* THIS CODE MUST MATCH THAT IN pwd_mkdb. */
290 l = pvt->line + pvt->max;
291 #define EXPAND(e) if ((e = t) == NULL) return (0); else \
292 do if (t >= l) return (0); while ((*t++ = *p++) != '\0')
293 #define SCALAR(v) if (t + sizeof v >= l) return (0); else \
294 (memmove(&(v), p, sizeof v), p += sizeof v)
295 EXPAND(pvt->passwd.pw_name);
296 EXPAND(pvt->passwd.pw_passwd);
297 SCALAR(pvt->passwd.pw_uid);
298 SCALAR(pvt->passwd.pw_gid);
299 SCALAR(pvt->passwd.pw_change);
300 EXPAND(pvt->passwd.pw_class);
301 EXPAND(pvt->passwd.pw_gecos);
302 EXPAND(pvt->passwd.pw_dir);
303 EXPAND(pvt->passwd.pw_shell);
304 SCALAR(pvt->passwd.pw_expire);
308 #endif /* WANT_IRS_PW */