1 /* $NetBSD: getid.c,v 1.10 2014/10/27 21:46:45 christos 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/param.h>
80 static struct group * gi_getgrnam(const char *);
81 static struct group * gi_getgrgid(gid_t);
82 static int gi_setgroupent(int);
83 static void gi_endgrent(void);
84 static int grstart(void);
85 static int grscan(int, gid_t, const char *);
86 static int grmatchline(int, gid_t, const char *);
88 static struct passwd * gi_getpwnam(const char *);
89 static struct passwd * gi_getpwuid(uid_t);
90 static int gi_setpassent(int);
91 static void gi_endpwent(void);
92 static int pwstart(void);
93 static int pwscan(int, uid_t, const char *);
94 static int pwmatchline(int, uid_t, const char *);
97 #define MAXLINELENGTH 1024
100 static struct group _gr_group;
101 static int _gr_stayopen;
102 static int _gr_filesdone;
104 static struct passwd _pw_passwd; /* password structure */
105 static int _pw_stayopen; /* keep fd's open */
106 static int _pw_filesdone;
108 static char grfile[MAXPATHLEN];
109 static char pwfile[MAXPATHLEN];
111 static char *members[MAXGRP];
112 static char grline[MAXLINELENGTH];
113 static char pwline[MAXLINELENGTH];
116 setup_getid(const char *dir)
121 /* close existing databases */
125 /* build paths to new databases */
126 snprintf(grfile, sizeof(grfile), "%s/group", dir);
127 snprintf(pwfile, sizeof(pwfile), "%s/master.passwd", dir);
129 /* try to open new databases */
130 if (!grstart() || !pwstart())
133 /* switch pwcache(3) lookup functions */
134 if (pwcache_groupdb(gi_setgroupent, gi_endgrent,
135 gi_getgrnam, gi_getgrgid) == -1
136 || pwcache_userdb(gi_setpassent, gi_endpwent,
137 gi_getpwnam, gi_getpwuid) == -1)
145 * group lookup functions
148 static struct group *
149 gi_getgrnam(const char *name)
155 rval = grscan(1, 0, name);
158 return (rval) ? &_gr_group : NULL;
161 static struct group *
162 gi_getgrgid(gid_t gid)
168 rval = grscan(1, gid, NULL);
171 return (rval) ? &_gr_group : NULL;
175 gi_setgroupent(int stayopen)
180 _gr_stayopen = stayopen;
190 (void)fclose(_gr_fp);
204 if (grfile[0] == '\0') /* sanity check */
207 _gr_fp = fopen(grfile, "r");
210 warn("Can't open `%s'", grfile);
216 grscan(int search, gid_t gid, const char *name)
222 if (!fgets(grline, sizeof(grline), _gr_fp)) {
227 /* skip lines that are too big */
228 if (!strchr(grline, '\n')) {
231 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
236 if (grline[0] == '#')
238 if (grmatchline(search, gid, name))
245 grmatchline(int search, gid_t gid, const char *name)
251 /* name may be NULL if search is nonzero */
254 memset(&_gr_group, 0, sizeof(_gr_group));
255 _gr_group.gr_name = strsep(&bp, ":\n");
256 if (search && name && strcmp(_gr_group.gr_name, name))
258 _gr_group.gr_passwd = strsep(&bp, ":\n");
259 if (!(cp = strsep(&bp, ":\n")))
261 id = strtoul(cp, &ep, 10);
262 if (id > GID_MAX || *ep != '\0')
264 _gr_group.gr_gid = (gid_t)id;
265 if (search && name == NULL && _gr_group.gr_gid != gid)
270 for (_gr_group.gr_mem = m = members;; bp++) {
271 if (m == &members[MAXGRP - 1])
279 } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
285 } else if (cp == NULL)
294 * user lookup functions
297 static struct passwd *
298 gi_getpwnam(const char *name)
304 rval = pwscan(1, 0, name);
307 return (rval) ? &_pw_passwd : NULL;
310 static struct passwd *
311 gi_getpwuid(uid_t uid)
317 rval = pwscan(1, uid, NULL);
320 return (rval) ? &_pw_passwd : NULL;
324 gi_setpassent(int stayopen)
329 _pw_stayopen = stayopen;
339 (void)fclose(_pw_fp);
353 if (pwfile[0] == '\0') /* sanity check */
355 _pw_fp = fopen(pwfile, "r");
358 warn("Can't open `%s'", pwfile);
364 pwscan(int search, uid_t uid, const char *name)
370 if (!fgets(pwline, sizeof(pwline), _pw_fp)) {
375 /* skip lines that are too big */
376 if (!strchr(pwline, '\n')) {
379 while ((ch = getc(_pw_fp)) != '\n' && ch != EOF)
384 if (pwline[0] == '#')
386 if (pwmatchline(search, uid, name))
393 pwmatchline(int search, uid_t uid, const char *name)
398 /* name may be NULL if search is nonzero */
401 memset(&_pw_passwd, 0, sizeof(_pw_passwd));
402 _pw_passwd.pw_name = strsep(&bp, ":\n"); /* name */
403 if (search && name && strcmp(_pw_passwd.pw_name, name))
406 _pw_passwd.pw_passwd = strsep(&bp, ":\n"); /* passwd */
408 if (!(cp = strsep(&bp, ":\n"))) /* uid */
410 id = strtoul(cp, &ep, 10);
411 if (id > UID_MAX || *ep != '\0')
413 _pw_passwd.pw_uid = (uid_t)id;
414 if (search && name == NULL && _pw_passwd.pw_uid != uid)
417 if (!(cp = strsep(&bp, ":\n"))) /* gid */
419 id = strtoul(cp, &ep, 10);
420 if (id > GID_MAX || *ep != '\0')
422 _pw_passwd.pw_gid = (gid_t)id;
424 if (!(ep = strsep(&bp, ":"))) /* class */
426 if (!(ep = strsep(&bp, ":"))) /* change */
428 if (!(ep = strsep(&bp, ":"))) /* expire */
431 if (!(_pw_passwd.pw_gecos = strsep(&bp, ":\n"))) /* gecos */
433 if (!(_pw_passwd.pw_dir = strsep(&bp, ":\n"))) /* directory */
435 if (!(_pw_passwd.pw_shell = strsep(&bp, ":\n"))) /* shell */
438 if (strchr(bp, ':') != NULL)