test41: relax maximum timer tick rate
[minix.git] / usr.sbin / mtree / getid.c
blob64eef27ef4e10363c35f8c0c1b2fd21191787ab0
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 */
5 /*
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
11 * are met:
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
31 * SUCH DAMAGE.
34 /*-
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
43 * are met:
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"
65 #endif
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>
72 #include <grp.h>
73 #include <limits.h>
74 #include <pwd.h>
75 #include <stdlib.h>
76 #include <stdio.h>
77 #include <string.h>
78 #include <time.h>
79 #include <unistd.h>
81 #include "extern.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 *);
99 #define MAXGRP 200
100 #define MAXLINELENGTH 1024
102 static FILE *_gr_fp;
103 static struct group _gr_group;
104 static int _gr_stayopen;
105 static int _gr_filesdone;
106 static FILE *_pw_fp;
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)
121 if (dir == NULL)
122 return (0);
124 /* close existing databases */
125 gi_endgrent();
126 gi_endpwent();
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())
134 return (0);
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)
141 return (0);
143 return (1);
148 * group lookup functions
151 static struct group *
152 gi_getgrnam(const char *name)
154 int rval;
156 if (!grstart())
157 return NULL;
158 rval = grscan(1, 0, name);
159 if (!_gr_stayopen)
160 endgrent();
161 return (rval) ? &_gr_group : NULL;
164 static struct group *
165 gi_getgrgid(gid_t gid)
167 int rval;
169 if (!grstart())
170 return NULL;
171 rval = grscan(1, gid, NULL);
172 if (!_gr_stayopen)
173 endgrent();
174 return (rval) ? &_gr_group : NULL;
177 static int
178 gi_setgroupent(int stayopen)
181 if (!grstart())
182 return 0;
183 _gr_stayopen = stayopen;
184 return 1;
187 static void
188 gi_endgrent(void)
191 _gr_filesdone = 0;
192 if (_gr_fp) {
193 (void)fclose(_gr_fp);
194 _gr_fp = NULL;
198 static int
199 grstart(void)
202 _gr_filesdone = 0;
203 if (_gr_fp) {
204 rewind(_gr_fp);
205 return 1;
207 if (grfile[0] == '\0') /* sanity check */
208 return 0;
209 return (_gr_fp = fopen(grfile, "r")) ? 1 : 0;
213 static int
214 grscan(int search, gid_t gid, const char *name)
217 if (_gr_filesdone)
218 return 0;
219 for (;;) {
220 if (!fgets(grline, sizeof(grline), _gr_fp)) {
221 if (!search)
222 _gr_filesdone = 1;
223 return 0;
225 /* skip lines that are too big */
226 if (!strchr(grline, '\n')) {
227 int ch;
229 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF)
231 continue;
233 if (grmatchline(search, gid, name))
234 return 1;
236 /* NOTREACHED */
239 static int
240 grmatchline(int search, gid_t gid, const char *name)
242 unsigned long id;
243 char **m;
244 char *cp, *bp, *ep;
246 /* name may be NULL if search is nonzero */
248 bp = grline;
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))
252 return 0;
253 _gr_group.gr_passwd = strsep(&bp, ":\n");
254 if (!(cp = strsep(&bp, ":\n")))
255 return 0;
256 id = strtoul(cp, &ep, 10);
257 if (id > GID_MAX || *ep != '\0')
258 return 0;
259 _gr_group.gr_gid = (gid_t)id;
260 if (search && name == NULL && _gr_group.gr_gid != gid)
261 return 0;
262 cp = NULL;
263 if (bp == NULL)
264 return 0;
265 for (_gr_group.gr_mem = m = members;; bp++) {
266 if (m == &members[MAXGRP - 1])
267 break;
268 if (*bp == ',') {
269 if (cp) {
270 *bp = '\0';
271 *m++ = cp;
272 cp = NULL;
274 } else if (*bp == '\0' || *bp == '\n' || *bp == ' ') {
275 if (cp) {
276 *bp = '\0';
277 *m++ = cp;
279 break;
280 } else if (cp == NULL)
281 cp = bp;
283 *m = NULL;
284 return 1;
289 * user lookup functions
292 static struct passwd *
293 gi_getpwnam(const char *name)
295 int rval;
297 if (!pwstart())
298 return NULL;
299 rval = pwscan(1, 0, name);
300 if (!_pw_stayopen)
301 endpwent();
302 return (rval) ? &_pw_passwd : NULL;
305 static struct passwd *
306 gi_getpwuid(uid_t uid)
308 int rval;
310 if (!pwstart())
311 return NULL;
312 rval = pwscan(1, uid, NULL);
313 if (!_pw_stayopen)
314 endpwent();
315 return (rval) ? &_pw_passwd : NULL;
318 static int
319 gi_setpassent(int stayopen)
322 if (!pwstart())
323 return 0;
324 _pw_stayopen = stayopen;
325 return 1;
328 static void
329 gi_endpwent(void)
332 _pw_filesdone = 0;
333 if (_pw_fp) {
334 (void)fclose(_pw_fp);
335 _pw_fp = NULL;
339 static int
340 pwstart(void)
343 _pw_filesdone = 0;
344 if (_pw_fp) {
345 rewind(_pw_fp);
346 return 1;
348 if (pwfile[0] == '\0') /* sanity check */
349 return 0;
350 return (_pw_fp = fopen(pwfile, "r")) ? 1 : 0;
354 static int
355 pwscan(int search, uid_t uid, const char *name)
358 if (_pw_filesdone)
359 return 0;
360 for (;;) {
361 if (!fgets(pwline, sizeof(pwline), _pw_fp)) {
362 if (!search)
363 _pw_filesdone = 1;
364 return 0;
366 /* skip lines that are too big */
367 if (!strchr(pwline, '\n')) {
368 int ch;
370 while ((ch = getc(_pw_fp)) != '\n' && ch != EOF)
372 continue;
374 if (pwmatchline(search, uid, name))
375 return 1;
377 /* NOTREACHED */
380 static int
381 pwmatchline(int search, uid_t uid, const char *name)
383 unsigned long id;
384 char *cp, *bp, *ep;
386 /* name may be NULL if search is nonzero */
388 bp = pwline;
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))
392 return 0;
394 _pw_passwd.pw_passwd = strsep(&bp, ":\n"); /* passwd */
396 if (!(cp = strsep(&bp, ":\n"))) /* uid */
397 return 0;
398 id = strtoul(cp, &ep, 10);
399 if (id > UID_MAX || *ep != '\0')
400 return 0;
401 _pw_passwd.pw_uid = (uid_t)id;
402 if (search && name == NULL && _pw_passwd.pw_uid != uid)
403 return 0;
405 if (!(cp = strsep(&bp, ":\n"))) /* gid */
406 return 0;
407 id = strtoul(cp, &ep, 10);
408 if (id > GID_MAX || *ep != '\0')
409 return 0;
410 _pw_passwd.pw_gid = (gid_t)id;
412 if (!(ep = strsep(&bp, ":"))) /* class */
413 return 0;
414 if (!(ep = strsep(&bp, ":"))) /* change */
415 return 0;
416 if (!(ep = strsep(&bp, ":"))) /* expire */
417 return 0;
419 if (!(_pw_passwd.pw_gecos = strsep(&bp, ":\n"))) /* gecos */
420 return 0;
421 if (!(_pw_passwd.pw_dir = strsep(&bp, ":\n"))) /* directory */
422 return 0;
423 if (!(_pw_passwd.pw_shell = strsep(&bp, ":\n"))) /* shell */
424 return 0;
426 if (strchr(bp, ':') != NULL)
427 return 0;
429 return 1;