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.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by the NetBSD
52 * Foundation, Inc. and its contributors.
53 * 4. Neither the name of The NetBSD Foundation nor the names of its
54 * contributors may be used to endorse or promote products derived
55 * from this software without specific prior written permission.
57 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
58 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
67 * POSSIBILITY OF SUCH DAMAGE.
70 #include <sys/cdefs.h>
71 __FBSDID("$FreeBSD$");
73 #include <sys/param.h>
89 static struct group * gi_getgrnam(const char *);
90 static struct group * gi_getgrgid(gid_t);
91 static int gi_setgroupent(int);
92 static void gi_endgrent(void);
93 static int grstart(void);
94 static int grscan(int, gid_t, const char *);
95 static int grmatchline(int, gid_t, const char *);
97 static struct passwd * gi_getpwnam(const char *);
98 static struct passwd * gi_getpwuid(uid_t);
99 static int gi_setpassent(int);
100 static void gi_endpwent(void);
101 static int pwstart(void);
102 static int pwscan(int, uid_t, const char *);
103 static int pwmatchline(int, uid_t, const char *);
106 #define MAXLINELENGTH 1024
109 static struct group _gr_group;
110 static int _gr_stayopen;
111 static int _gr_filesdone;
113 static struct passwd _pw_passwd; /* password structure */
114 static int _pw_stayopen; /* keep fd's open */
115 static int _pw_filesdone;
117 static char grfile[MAXPATHLEN];
118 static char pwfile[MAXPATHLEN];
120 static char *members[MAXGRP];
121 static char grline[MAXLINELENGTH];
122 static char pwline[MAXLINELENGTH];
125 setup_getid(const char *dir)
130 /* close existing databases */
134 /* build paths to new databases */
135 snprintf(grfile, sizeof(grfile), "%s/group", dir);
136 snprintf(pwfile, sizeof(pwfile), "%s/master.passwd", dir);
138 /* try to open new databases */
139 if (!grstart() || !pwstart())
142 /* switch pwcache(3) lookup functions */
143 if (pwcache_groupdb(gi_setgroupent, gi_endgrent,
144 gi_getgrnam, gi_getgrgid) == -1
145 || pwcache_userdb(gi_setpassent, gi_endpwent,
146 gi_getpwnam, gi_getpwuid) == -1)
154 * group lookup functions
157 static struct group *
158 gi_getgrnam(const char *name)
164 rval = grscan(1, 0, name);
167 return (rval) ? &_gr_group : NULL;
170 static struct group *
171 gi_getgrgid(gid_t gid)
177 rval = grscan(1, gid, NULL);
180 return (rval) ? &_gr_group : NULL;
184 gi_setgroupent(int stayopen)
189 _gr_stayopen = stayopen;
199 (void)fclose(_gr_fp);
213 if (grfile[0] == '\0') /* sanity check */
215 return (_gr_fp = fopen(grfile, "r")) ? 1 : 0;
220 grscan(int search, gid_t gid, const char *name)
226 if (!fgets(grline, sizeof(grline), _gr_fp)) {
231 /* skip lines that are too big */
232 if (!strchr(grline, '\n')) {
235 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
239 if (grmatchline(search, gid, name))
246 grmatchline(int search, gid_t gid, const char *name)
252 /* name may be NULL if search is nonzero */
255 memset(&_gr_group, 0, sizeof(_gr_group));
256 _gr_group.gr_name = strsep(&bp, ":\n");
257 if (search && name && strcmp(_gr_group.gr_name, name))
259 _gr_group.gr_passwd = strsep(&bp, ":\n");
260 if (!(cp = strsep(&bp, ":\n")))
262 id = strtoul(cp, &ep, 10);
263 if (id > GID_MAX || *ep != '\0')
265 _gr_group.gr_gid = (gid_t)id;
266 if (search && name == NULL && _gr_group.gr_gid != gid)
271 for (_gr_group.gr_mem = m = members;; bp++) {
272 if (m == &members[MAXGRP - 1])
280 } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
286 } else if (cp == NULL)
295 * user lookup functions
298 static struct passwd *
299 gi_getpwnam(const char *name)
305 rval = pwscan(1, 0, name);
308 return (rval) ? &_pw_passwd : NULL;
311 static struct passwd *
312 gi_getpwuid(uid_t uid)
318 rval = pwscan(1, uid, NULL);
321 return (rval) ? &_pw_passwd : NULL;
325 gi_setpassent(int stayopen)
330 _pw_stayopen = stayopen;
340 (void)fclose(_pw_fp);
354 if (pwfile[0] == '\0') /* sanity check */
356 return (_pw_fp = fopen(pwfile, "r")) ? 1 : 0;
361 pwscan(int search, uid_t uid, const char *name)
367 if (!fgets(pwline, sizeof(pwline), _pw_fp)) {
372 /* skip lines that are too big */
373 if (!strchr(pwline, '\n')) {
376 while ((ch = getc(_pw_fp)) != '\n' && ch != EOF)
380 if (pwmatchline(search, uid, name))
387 pwmatchline(int search, uid_t uid, const char *name)
392 /* name may be NULL if search is nonzero */
395 memset(&_pw_passwd, 0, sizeof(_pw_passwd));
396 _pw_passwd.pw_name = strsep(&bp, ":\n"); /* name */
397 if (search && name && strcmp(_pw_passwd.pw_name, name))
400 _pw_passwd.pw_passwd = strsep(&bp, ":\n"); /* passwd */
402 if (!(cp = strsep(&bp, ":\n"))) /* uid */
404 id = strtoul(cp, &ep, 10);
405 if (id > UID_MAX || *ep != '\0')
407 _pw_passwd.pw_uid = (uid_t)id;
408 if (search && name == NULL && _pw_passwd.pw_uid != uid)
411 if (!(cp = strsep(&bp, ":\n"))) /* gid */
413 id = strtoul(cp, &ep, 10);
414 if (id > GID_MAX || *ep != '\0')
416 _pw_passwd.pw_gid = (gid_t)id;
418 if (!(ep = strsep(&bp, ":"))) /* class */
420 if (!(ep = strsep(&bp, ":"))) /* change */
422 if (!(ep = strsep(&bp, ":"))) /* expire */
425 if (!(_pw_passwd.pw_gecos = strsep(&bp, ":\n"))) /* gecos */
427 if (!(_pw_passwd.pw_dir = strsep(&bp, ":\n"))) /* directory */
429 if (!(_pw_passwd.pw_shell = strsep(&bp, ":\n"))) /* shell */
432 if (strchr(bp, ':') != NULL)