1 /* $NetBSD: getid.c,v 1.7 2008/04/28 20:24:17 martin Exp $ */
2 /* from: NetBSD: getpwent.c,v 1.48 2000/10/03 03:22:26 enami Exp */
3 /* from: NetBSD: getgrent.c,v 1.41 2002/01/12 23:51:30 lukem Exp */
6 * Copyright (c) 1987, 1988, 1989, 1993, 1994, 1995
7 * The Regents of the University of California. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. 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
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 2002 The NetBSD Foundation, Inc.
36 * All rights reserved.
38 * This code is derived from software contributed to The NetBSD Foundation
39 * by Luke Mewburn of Wasabi Systems.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
50 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
51 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
52 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
53 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
54 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
55 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
56 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
57 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
58 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
59 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
60 * POSSIBILITY OF SUCH DAMAGE.
63 #if HAVE_NBTOOL_CONFIG_H
64 #include "nbtool_config.h"
67 #include <sys/cdefs.h>
68 __RCSID("$NetBSD: getid.c,v 1.7 2008/04/28 20:24:17 martin Exp $");
70 #include <sys/param.h>
83 static struct group * gi_getgrnam(const char *);
84 static struct group * gi_getgrgid(gid_t);
85 static int gi_setgroupent(int);
86 static void gi_endgrent(void);
87 static int grstart(void);
88 static int grscan(int, gid_t, const char *);
89 static int grmatchline(int, gid_t, const char *);
91 static struct passwd * gi_getpwnam(const char *);
92 static struct passwd * gi_getpwuid(uid_t);
93 static int gi_setpassent(int);
94 static void gi_endpwent(void);
95 static int pwstart(void);
96 static int pwscan(int, uid_t, const char *);
97 static int pwmatchline(int, uid_t, const char *);
100 #define MAXLINELENGTH 1024
103 static struct group _gr_group;
104 static int _gr_stayopen;
105 static int _gr_filesdone;
107 static struct passwd _pw_passwd; /* password structure */
108 static int _pw_stayopen; /* keep fd's open */
109 static int _pw_filesdone;
111 static char grfile[MAXPATHLEN];
112 static char pwfile[MAXPATHLEN];
114 static char *members[MAXGRP];
115 static char grline[MAXLINELENGTH];
116 static char pwline[MAXLINELENGTH];
119 setup_getid(const char *dir)
124 /* close existing databases */
128 /* build paths to new databases */
129 snprintf(grfile, sizeof(grfile), "%s/group", dir);
130 snprintf(pwfile, sizeof(pwfile), "%s/master.passwd", dir);
132 /* try to open new databases */
133 if (!grstart() || !pwstart())
136 /* switch pwcache(3) lookup functions */
137 if (pwcache_groupdb(gi_setgroupent, gi_endgrent,
138 gi_getgrnam, gi_getgrgid) == -1
139 || pwcache_userdb(gi_setpassent, gi_endpwent,
140 gi_getpwnam, gi_getpwuid) == -1)
148 * group lookup functions
151 static struct group *
152 gi_getgrnam(const char *name)
158 rval = grscan(1, 0, name);
161 return (rval) ? &_gr_group : NULL;
164 static struct group *
165 gi_getgrgid(gid_t gid)
171 rval = grscan(1, gid, NULL);
174 return (rval) ? &_gr_group : NULL;
178 gi_setgroupent(int stayopen)
183 _gr_stayopen = stayopen;
193 (void)fclose(_gr_fp);
207 if (grfile[0] == '\0') /* sanity check */
209 return (_gr_fp = fopen(grfile, "r")) ? 1 : 0;
214 grscan(int search, gid_t gid, const char *name)
220 if (!fgets(grline, sizeof(grline), _gr_fp)) {
225 /* skip lines that are too big */
226 if (!strchr(grline, '\n')) {
229 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
233 if (grmatchline(search, gid, name))
240 grmatchline(int search, gid_t gid, const char *name)
246 /* name may be NULL if search is nonzero */
249 memset(&_gr_group, 0, sizeof(_gr_group));
250 _gr_group.gr_name = strsep(&bp, ":\n");
251 if (search && name && strcmp(_gr_group.gr_name, name))
253 _gr_group.gr_passwd = strsep(&bp, ":\n");
254 if (!(cp = strsep(&bp, ":\n")))
256 id = strtoul(cp, &ep, 10);
257 if (id > GID_MAX || *ep != '\0')
259 _gr_group.gr_gid = (gid_t)id;
260 if (search && name == NULL && _gr_group.gr_gid != gid)
265 for (_gr_group.gr_mem = m = members;; bp++) {
266 if (m == &members[MAXGRP - 1])
274 } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
280 } else if (cp == NULL)
289 * user lookup functions
292 static struct passwd *
293 gi_getpwnam(const char *name)
299 rval = pwscan(1, 0, name);
302 return (rval) ? &_pw_passwd : NULL;
305 static struct passwd *
306 gi_getpwuid(uid_t uid)
312 rval = pwscan(1, uid, NULL);
315 return (rval) ? &_pw_passwd : NULL;
319 gi_setpassent(int stayopen)
324 _pw_stayopen = stayopen;
334 (void)fclose(_pw_fp);
348 if (pwfile[0] == '\0') /* sanity check */
350 return (_pw_fp = fopen(pwfile, "r")) ? 1 : 0;
355 pwscan(int search, uid_t uid, const char *name)
361 if (!fgets(pwline, sizeof(pwline), _pw_fp)) {
366 /* skip lines that are too big */
367 if (!strchr(pwline, '\n')) {
370 while ((ch = getc(_pw_fp)) != '\n' && ch != EOF)
374 if (pwmatchline(search, uid, name))
381 pwmatchline(int search, uid_t uid, const char *name)
386 /* name may be NULL if search is nonzero */
389 memset(&_pw_passwd, 0, sizeof(_pw_passwd));
390 _pw_passwd.pw_name = strsep(&bp, ":\n"); /* name */
391 if (search && name && strcmp(_pw_passwd.pw_name, name))
394 _pw_passwd.pw_passwd = strsep(&bp, ":\n"); /* passwd */
396 if (!(cp = strsep(&bp, ":\n"))) /* uid */
398 id = strtoul(cp, &ep, 10);
399 if (id > UID_MAX || *ep != '\0')
401 _pw_passwd.pw_uid = (uid_t)id;
402 if (search && name == NULL && _pw_passwd.pw_uid != uid)
405 if (!(cp = strsep(&bp, ":\n"))) /* gid */
407 id = strtoul(cp, &ep, 10);
408 if (id > GID_MAX || *ep != '\0')
410 _pw_passwd.pw_gid = (gid_t)id;
412 if (!(ep = strsep(&bp, ":"))) /* class */
414 if (!(ep = strsep(&bp, ":"))) /* change */
416 if (!(ep = strsep(&bp, ":"))) /* expire */
419 if (!(_pw_passwd.pw_gecos = strsep(&bp, ":\n"))) /* gecos */
421 if (!(_pw_passwd.pw_dir = strsep(&bp, ":\n"))) /* directory */
423 if (!(_pw_passwd.pw_shell = strsep(&bp, ":\n"))) /* shell */
426 if (strchr(bp, ':') != NULL)