1 /* $NetBSD: getid.c,v 1.5 2004/06/20 22:20:18 jmc 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 #include <sys/cdefs.h>
64 __FBSDID("$FreeBSD$");
66 #include <sys/param.h>
82 static struct group * gi_getgrnam(const char *);
83 static struct group * gi_getgrgid(gid_t);
84 static int gi_setgroupent(int);
85 static void gi_endgrent(void);
86 static int grstart(void);
87 static int grscan(int, gid_t, const char *);
88 static int grmatchline(int, gid_t, const char *);
90 static struct passwd * gi_getpwnam(const char *);
91 static struct passwd * gi_getpwuid(uid_t);
92 static int gi_setpassent(int);
93 static void gi_endpwent(void);
94 static int pwstart(void);
95 static int pwscan(int, uid_t, const char *);
96 static int pwmatchline(int, uid_t, const char *);
99 #define MAXLINELENGTH 1024
102 static struct group _gr_group;
103 static int _gr_stayopen;
104 static int _gr_filesdone;
106 static struct passwd _pw_passwd; /* password structure */
107 static int _pw_stayopen; /* keep fd's open */
108 static int _pw_filesdone;
110 static char grfile[MAXPATHLEN];
111 static char pwfile[MAXPATHLEN];
113 static char *members[MAXGRP];
114 static char grline[MAXLINELENGTH];
115 static char pwline[MAXLINELENGTH];
118 setup_getid(const char *dir)
123 /* close existing databases */
127 /* build paths to new databases */
128 snprintf(grfile, sizeof(grfile), "%s/group", dir);
129 snprintf(pwfile, sizeof(pwfile), "%s/master.passwd", dir);
131 /* try to open new databases */
132 if (!grstart() || !pwstart())
135 /* switch pwcache(3) lookup functions */
136 if (pwcache_groupdb(gi_setgroupent, gi_endgrent,
137 gi_getgrnam, gi_getgrgid) == -1
138 || pwcache_userdb(gi_setpassent, gi_endpwent,
139 gi_getpwnam, gi_getpwuid) == -1)
147 * group lookup functions
150 static struct group *
151 gi_getgrnam(const char *name)
157 rval = grscan(1, 0, name);
160 return (rval) ? &_gr_group : NULL;
163 static struct group *
164 gi_getgrgid(gid_t gid)
170 rval = grscan(1, gid, NULL);
173 return (rval) ? &_gr_group : NULL;
177 gi_setgroupent(int stayopen)
182 _gr_stayopen = stayopen;
192 (void)fclose(_gr_fp);
206 if (grfile[0] == '\0') /* sanity check */
208 return (_gr_fp = fopen(grfile, "r")) ? 1 : 0;
213 grscan(int search, gid_t gid, const char *name)
219 if (!fgets(grline, sizeof(grline), _gr_fp)) {
224 /* skip lines that are too big */
225 if (!strchr(grline, '\n')) {
228 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
232 if (grmatchline(search, gid, name))
239 grmatchline(int search, gid_t gid, const char *name)
245 /* name may be NULL if search is nonzero */
248 memset(&_gr_group, 0, sizeof(_gr_group));
249 _gr_group.gr_name = strsep(&bp, ":\n");
250 if (search && name && strcmp(_gr_group.gr_name, name))
252 _gr_group.gr_passwd = strsep(&bp, ":\n");
253 if (!(cp = strsep(&bp, ":\n")))
255 id = strtoul(cp, &ep, 10);
256 if (id > GID_MAX || *ep != '\0')
258 _gr_group.gr_gid = (gid_t)id;
259 if (search && name == NULL && _gr_group.gr_gid != gid)
264 for (_gr_group.gr_mem = m = members;; bp++) {
265 if (m == &members[MAXGRP - 1])
273 } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
279 } else if (cp == NULL)
288 * user lookup functions
291 static struct passwd *
292 gi_getpwnam(const char *name)
298 rval = pwscan(1, 0, name);
301 return (rval) ? &_pw_passwd : NULL;
304 static struct passwd *
305 gi_getpwuid(uid_t uid)
311 rval = pwscan(1, uid, NULL);
314 return (rval) ? &_pw_passwd : NULL;
318 gi_setpassent(int stayopen)
323 _pw_stayopen = stayopen;
333 (void)fclose(_pw_fp);
347 if (pwfile[0] == '\0') /* sanity check */
349 return (_pw_fp = fopen(pwfile, "r")) ? 1 : 0;
354 pwscan(int search, uid_t uid, const char *name)
360 if (!fgets(pwline, sizeof(pwline), _pw_fp)) {
365 /* skip lines that are too big */
366 if (!strchr(pwline, '\n')) {
369 while ((ch = getc(_pw_fp)) != '\n' && ch != EOF)
373 if (pwmatchline(search, uid, name))
380 pwmatchline(int search, uid_t uid, const char *name)
385 /* name may be NULL if search is nonzero */
388 memset(&_pw_passwd, 0, sizeof(_pw_passwd));
389 _pw_passwd.pw_name = strsep(&bp, ":\n"); /* name */
390 if (search && name && strcmp(_pw_passwd.pw_name, name))
393 _pw_passwd.pw_passwd = strsep(&bp, ":\n"); /* passwd */
395 if (!(cp = strsep(&bp, ":\n"))) /* uid */
397 id = strtoul(cp, &ep, 10);
398 if (id > UID_MAX || *ep != '\0')
400 _pw_passwd.pw_uid = (uid_t)id;
401 if (search && name == NULL && _pw_passwd.pw_uid != uid)
404 if (!(cp = strsep(&bp, ":\n"))) /* gid */
406 id = strtoul(cp, &ep, 10);
407 if (id > GID_MAX || *ep != '\0')
409 _pw_passwd.pw_gid = (gid_t)id;
411 if (!(ep = strsep(&bp, ":"))) /* class */
413 if (!(ep = strsep(&bp, ":"))) /* change */
415 if (!(ep = strsep(&bp, ":"))) /* expire */
418 if (!(_pw_passwd.pw_gecos = strsep(&bp, ":\n"))) /* gecos */
420 if (!(_pw_passwd.pw_dir = strsep(&bp, ":\n"))) /* directory */
422 if (!(_pw_passwd.pw_shell = strsep(&bp, ":\n"))) /* shell */
425 if (strchr(bp, ':') != NULL)