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 #include <sys/param.h>
76 static struct group * gi_getgrnam(const char *);
77 static struct group * gi_getgrgid(gid_t);
78 static int gi_setgroupent(int);
79 static void gi_endgrent(void);
80 static int grstart(void);
81 static int grscan(int, gid_t, const char *);
82 static int grmatchline(int, gid_t, const char *);
84 static struct passwd * gi_getpwnam(const char *);
85 static struct passwd * gi_getpwuid(uid_t);
86 static int gi_setpassent(int);
87 static void gi_endpwent(void);
88 static int pwstart(void);
89 static int pwscan(int, uid_t, const char *);
90 static int pwmatchline(int, uid_t, const char *);
93 #define MAXLINELENGTH 1024
96 static struct group _gr_group;
97 static int _gr_stayopen;
98 static int _gr_filesdone;
100 static struct passwd _pw_passwd; /* password structure */
101 static int _pw_stayopen; /* keep fd's open */
102 static int _pw_filesdone;
104 static char grfile[MAXPATHLEN];
105 static char pwfile[MAXPATHLEN];
107 static char *members[MAXGRP];
108 static char grline[MAXLINELENGTH];
109 static char pwline[MAXLINELENGTH];
112 setup_getid(const char *dir)
117 /* close existing databases */
121 /* build paths to new databases */
122 snprintf(grfile, sizeof(grfile), "%s/group", dir);
123 snprintf(pwfile, sizeof(pwfile), "%s/master.passwd", dir);
125 /* try to open new databases */
126 if (!grstart() || !pwstart())
129 /* switch pwcache(3) lookup functions */
130 if (pwcache_groupdb(gi_setgroupent, gi_endgrent,
131 gi_getgrnam, gi_getgrgid) == -1
132 || pwcache_userdb(gi_setpassent, gi_endpwent,
133 gi_getpwnam, gi_getpwuid) == -1)
141 * group lookup functions
144 static struct group *
145 gi_getgrnam(const char *name)
151 rval = grscan(1, 0, name);
154 return (rval) ? &_gr_group : NULL;
157 static struct group *
158 gi_getgrgid(gid_t gid)
164 rval = grscan(1, gid, NULL);
167 return (rval) ? &_gr_group : NULL;
171 gi_setgroupent(int stayopen)
176 _gr_stayopen = stayopen;
186 (void)fclose(_gr_fp);
200 if (grfile[0] == '\0') /* sanity check */
203 _gr_fp = fopen(grfile, "r");
206 warn("Can't open `%s'", grfile);
212 grscan(int search, gid_t gid, const char *name)
218 if (!fgets(grline, sizeof(grline), _gr_fp)) {
223 /* skip lines that are too big */
224 if (!strchr(grline, '\n')) {
227 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
232 if (grline[0] == '#')
234 if (grmatchline(search, gid, name))
241 grmatchline(int search, gid_t gid, const char *name)
247 /* name may be NULL if search is nonzero */
250 memset(&_gr_group, 0, sizeof(_gr_group));
251 _gr_group.gr_name = strsep(&bp, ":\n");
252 if (search && name && strcmp(_gr_group.gr_name, name))
254 _gr_group.gr_passwd = strsep(&bp, ":\n");
255 if (!(cp = strsep(&bp, ":\n")))
257 id = strtoul(cp, &ep, 10);
258 if (id > GID_MAX || *ep != '\0')
260 _gr_group.gr_gid = (gid_t)id;
261 if (search && name == NULL && _gr_group.gr_gid != gid)
266 for (_gr_group.gr_mem = m = members;; bp++) {
267 if (m == &members[MAXGRP - 1])
275 } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
281 } else if (cp == NULL)
290 * user lookup functions
293 static struct passwd *
294 gi_getpwnam(const char *name)
300 rval = pwscan(1, 0, name);
303 return (rval) ? &_pw_passwd : NULL;
306 static struct passwd *
307 gi_getpwuid(uid_t uid)
313 rval = pwscan(1, uid, NULL);
316 return (rval) ? &_pw_passwd : NULL;
320 gi_setpassent(int stayopen)
325 _pw_stayopen = stayopen;
335 (void)fclose(_pw_fp);
349 if (pwfile[0] == '\0') /* sanity check */
351 _pw_fp = fopen(pwfile, "r");
354 warn("Can't open `%s'", pwfile);
360 pwscan(int search, uid_t uid, const char *name)
366 if (!fgets(pwline, sizeof(pwline), _pw_fp)) {
371 /* skip lines that are too big */
372 if (!strchr(pwline, '\n')) {
375 while ((ch = getc(_pw_fp)) != '\n' && ch != EOF)
380 if (pwline[0] == '#')
382 if (pwmatchline(search, uid, name))
389 pwmatchline(int search, uid_t uid, const char *name)
394 /* name may be NULL if search is nonzero */
397 memset(&_pw_passwd, 0, sizeof(_pw_passwd));
398 _pw_passwd.pw_name = strsep(&bp, ":\n"); /* name */
399 if (search && name && strcmp(_pw_passwd.pw_name, name))
402 _pw_passwd.pw_passwd = strsep(&bp, ":\n"); /* passwd */
404 if (!(cp = strsep(&bp, ":\n"))) /* uid */
406 id = strtoul(cp, &ep, 10);
407 if (id > UID_MAX || *ep != '\0')
409 _pw_passwd.pw_uid = (uid_t)id;
410 if (search && name == NULL && _pw_passwd.pw_uid != uid)
413 if (!(cp = strsep(&bp, ":\n"))) /* gid */
415 id = strtoul(cp, &ep, 10);
416 if (id > GID_MAX || *ep != '\0')
418 _pw_passwd.pw_gid = (gid_t)id;
420 if (!(ep = strsep(&bp, ":"))) /* class */
422 if (!(ep = strsep(&bp, ":"))) /* change */
424 if (!(ep = strsep(&bp, ":"))) /* expire */
427 if (!(_pw_passwd.pw_gecos = strsep(&bp, ":\n"))) /* gecos */
429 if (!(_pw_passwd.pw_dir = strsep(&bp, ":\n"))) /* directory */
431 if (!(_pw_passwd.pw_shell = strsep(&bp, ":\n"))) /* shell */
434 if (strchr(bp, ':') != NULL)