2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 * David L. Nugent. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 static const char rcsid[] =
47 static struct passwd *lookup_pwent(const char *user);
48 static void delete_members(struct group *grp, char *list);
49 static int print_group(struct group * grp, bool pretty);
50 static gid_t gr_gidpolicy(struct userconf * cnf, intmax_t id);
53 grp_set_passwd(struct group *grp, bool update, int fd, bool precrypted)
64 grp->gr_passwd = "*"; /* No access */
68 if ((istty = isatty(fd))) {
72 tcsetattr(fd, TCSANOW, &n);
73 printf("%sassword for group %s:", update ? "New p" : "P",
77 b = read(fd, line, sizeof(line) - 1);
78 if (istty) { /* Restore state */
79 tcsetattr(fd, TCSANOW, &t);
84 err(EX_OSERR, "-h file descriptor");
86 if ((p = strpbrk(line, " \t\r\n")) != NULL)
89 errx(EX_DATAERR, "empty password read on file descriptor %d",
92 if (strchr(line, ':') != 0)
93 errx(EX_DATAERR, "wrong encrypted passwrd");
94 grp->gr_passwd = line;
96 grp->gr_passwd = pw_pwcrypt(line);
100 pw_groupnext(struct userconf *cnf, bool quiet)
102 gid_t next = gr_gidpolicy(cnf, -1);
106 printf("%ju\n", (uintmax_t)next);
108 return (EXIT_SUCCESS);
111 static struct group *
112 getgroup(char *name, intmax_t id, bool fatal)
116 if (id < 0 && name == NULL)
117 errx(EX_DATAERR, "groupname or id required");
118 grp = (name != NULL) ? GETGRNAM(name) : GETGRGID(id);
123 errx(EX_DATAERR, "unknown gid `%ju'", id);
124 errx(EX_DATAERR, "unknown group `%s'", name);
130 * Lookup a passwd entry using a name or UID.
132 static struct passwd *
133 lookup_pwent(const char *user)
137 if ((pwd = GETPWNAM(user)) == NULL &&
138 (!isdigit((unsigned char)*user) ||
139 (pwd = getpwuid((uid_t) atoi(user))) == NULL))
140 errx(EX_NOUSER, "user `%s' does not exist", user);
147 * Delete requested members from a group.
150 delete_members(struct group *grp, char *list)
155 if (grp->gr_mem == NULL)
158 for (p = strtok(list, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
159 for (k = 0; grp->gr_mem[k] != NULL; k++) {
160 if (strcmp(grp->gr_mem[k], p) == 0)
163 if (grp->gr_mem[k] == NULL) /* No match */
166 for (; grp->gr_mem[k] != NULL; k++)
167 grp->gr_mem[k] = grp->gr_mem[k+1];
172 gr_gidpolicy(struct userconf * cnf, intmax_t id)
176 gid_t gid = (gid_t) - 1;
179 * Check the given gid, if any
184 if ((grp = GETGRGID(gid)) != NULL && conf.checkduplicate)
185 errx(EX_DATAERR, "gid `%ju' has already been allocated",
186 (uintmax_t)grp->gr_gid);
191 * We need to allocate the next available gid under one of
192 * two policies a) Grab the first unused gid b) Grab the
193 * highest possible unused gid
195 if (cnf->min_gid >= cnf->max_gid) { /* Sanity claus^H^H^H^Hheck */
197 cnf->max_gid = 32000;
199 bm = bm_alloc(cnf->max_gid - cnf->min_gid + 1);
202 * Now, let's fill the bitmap from the password file
205 while ((grp = GETGRENT()) != NULL)
206 if ((gid_t)grp->gr_gid >= (gid_t)cnf->min_gid &&
207 (gid_t)grp->gr_gid <= (gid_t)cnf->max_gid)
208 bm_setbit(&bm, grp->gr_gid - cnf->min_gid);
212 * Then apply the policy, with fallback to reuse if necessary
215 gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
217 gid = (gid_t) (bm_lastset(&bm) + 1);
218 if (!bm_isset(&bm, gid))
221 gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
225 * Another sanity check
227 if (gid < cnf->min_gid || gid > cnf->max_gid)
228 errx(EX_SOFTWARE, "unable to allocate a new gid - range fully "
235 print_group(struct group * grp, bool pretty)
241 printf("Group Name: %-15s #%lu\n"
243 grp->gr_name, (long) grp->gr_gid);
244 if (grp->gr_mem != NULL) {
245 for (i = 0; grp->gr_mem[i]; i++)
246 printf("%s%s", i ? "," : "", grp->gr_mem[i]);
248 fputs("\n\n", stdout);
249 return (EXIT_SUCCESS);
255 return (EXIT_SUCCESS);
259 pw_group_next(int argc, char **argv, char *arg1 __unused)
261 struct userconf *cnf;
262 const char *cfg = NULL;
266 while ((ch = getopt(argc, argv, "C:q")) != -1) {
278 freopen(_PATH_DEVNULL, "w", stderr);
279 cnf = get_userconfig(cfg);
280 return (pw_groupnext(cnf, quiet));
284 pw_group_show(int argc, char **argv, char *arg1)
286 struct group *grp = NULL;
290 bool all, force, quiet, pretty;
292 all = force = quiet = pretty = false;
294 struct group fakegroup = {
302 if (arg1[strspn(arg1, "0123456789")] == '\0')
303 id = pw_checkid(arg1, GID_MAX);
308 while ((ch = getopt(argc, argv, "C:qn:g:FPa")) != -1) {
311 /* ignore compatibility */
320 id = pw_checkid(optarg, GID_MAX);
335 freopen(_PATH_DEVNULL, "w", stderr);
339 while ((grp = GETGRENT()) != NULL)
340 print_group(grp, pretty);
342 return (EXIT_SUCCESS);
345 grp = getgroup(name, id, !force);
349 return (print_group(grp, pretty));
353 pw_group_del(int argc, char **argv, char *arg1)
355 struct userconf *cnf = NULL;
356 struct group *grp = NULL;
358 const char *cfg = NULL;
365 if (arg1[strspn(arg1, "0123456789")] == '\0')
366 id = pw_checkid(arg1, GID_MAX);
371 while ((ch = getopt(argc, argv, "C:qn:g:Y")) != -1) {
383 id = pw_checkid(optarg, GID_MAX);
392 freopen(_PATH_DEVNULL, "w", stderr);
393 grp = getgroup(name, id, true);
394 cnf = get_userconfig(cfg);
397 err(EX_IOERR, "group '%s' not available (NIS?)", name);
399 err(EX_IOERR, "group update");
400 pw_log(cnf, M_DELETE, W_GROUP, "%s(%ju) removed", name,
403 if (nis && nis_update() == 0)
404 pw_log(cnf, M_DELETE, W_GROUP, "NIS maps updated");
406 return (EXIT_SUCCESS);
410 grp_has_member(struct group *grp, const char *name)
414 for (j = 0; grp->gr_mem != NULL && grp->gr_mem[j] != NULL; j++)
415 if (strcmp(grp->gr_mem[j], name) == 0)
421 grp_add_members(struct group **grp, char *members)
429 for (p = strtok(members, tok); p != NULL; p = strtok(NULL, tok)) {
430 pwd = lookup_pwent(p);
431 if (grp_has_member(*grp, pwd->pw_name))
433 *grp = gr_add(*grp, pwd->pw_name);
438 groupadd(struct userconf *cnf, char *name, gid_t id, char *members, int fd,
439 bool dryrun, bool pretty, bool precrypted)
444 struct group fakegroup = {
452 grp->gr_name = pw_checkname(name, 0);
453 grp->gr_passwd = "*";
454 grp->gr_gid = gr_gidpolicy(cnf, id);
458 * This allows us to set a group password Group passwords is an
459 * antique idea, rarely used and insecure (no secure database) Should
460 * be discouraged, but it is apparently still supported by some
463 grp_set_passwd(grp, false, fd, precrypted);
464 grp_add_members(&grp, members);
466 return (print_group(grp, pretty));
468 if ((rc = addgrent(grp)) != 0) {
470 errx(EX_IOERR, "group '%s' already exists",
473 err(EX_IOERR, "group update");
476 pw_log(cnf, M_ADD, W_GROUP, "%s(%ju)", grp->gr_name,
477 (uintmax_t)grp->gr_gid);
479 return (EXIT_SUCCESS);
483 pw_group_add(int argc, char **argv, char *arg1)
485 struct userconf *cnf = NULL;
487 char *members = NULL;
488 const char *cfg = NULL;
491 bool quiet, precrypted, dryrun, pretty, nis;
493 quiet = precrypted = dryrun = pretty = nis = false;
496 if (arg1[strspn(arg1, "0123456789")] == '\0')
497 id = pw_checkid(arg1, GID_MAX);
502 while ((ch = getopt(argc, argv, "C:qn:g:h:H:M:oNPY")) != -1) {
514 id = pw_checkid(optarg, GID_MAX);
518 errx(EX_USAGE, "'-h' and '-H' are mutually "
519 "exclusive options");
520 fd = pw_checkfd(optarg);
523 errx(EX_USAGE, "-H expects a file descriptor");
527 errx(EX_USAGE, "'-h' and '-H' are mutually "
528 "exclusive options");
529 fd = pw_checkfd(optarg);
535 conf.checkduplicate = false;
550 freopen(_PATH_DEVNULL, "w", stderr);
552 errx(EX_DATAERR, "group name required");
553 if (GETGRNAM(name) != NULL)
554 errx(EX_DATAERR, "group name `%s' already exists", name);
555 cnf = get_userconfig(cfg);
556 rc = groupadd(cnf, name, gr_gidpolicy(cnf, id), members, fd, dryrun,
558 if (nis && rc == EXIT_SUCCESS && nis_update() == 0)
559 pw_log(cnf, M_ADD, W_GROUP, "NIS maps updated");
565 pw_group_mod(int argc, char **argv, char *arg1)
567 struct userconf *cnf;
568 struct group *grp = NULL;
569 const char *cfg = NULL;
570 char *oldmembers = NULL;
571 char *members = NULL;
572 char *newmembers = NULL;
573 char *newname = NULL;
577 bool quiet, pretty, dryrun, nis, precrypted;
579 quiet = pretty = dryrun = nis = precrypted = false;
582 if (arg1[strspn(arg1, "0123456789")] == '\0')
583 id = pw_checkid(arg1, GID_MAX);
588 while ((ch = getopt(argc, argv, "C:qn:d:g:l:h:H:M:m:NPY")) != -1) {
600 id = pw_checkid(optarg, GID_MAX);
610 errx(EX_USAGE, "'-h' and '-H' are mutually "
611 "exclusive options");
612 fd = pw_checkfd(optarg);
615 errx(EX_USAGE, "-H expects a file descriptor");
619 errx(EX_USAGE, "'-h' and '-H' are mutually "
620 "exclusive options");
621 fd = pw_checkfd(optarg);
641 freopen(_PATH_DEVNULL, "w", stderr);
642 cnf = get_userconfig(cfg);
643 grp = getgroup(name, id, true);
650 grp->gr_name = pw_checkname(newname, 0);
652 grp_set_passwd(grp, true, fd, precrypted);
654 * Keep the same logic as old code for now:
655 * if -M is passed, -d and -m are ignored
656 * then id -d, -m is ignored
662 grp_add_members(&grp, members);
663 } else if (oldmembers) {
664 delete_members(grp, oldmembers);
665 } else if (newmembers) {
666 grp_add_members(&grp, newmembers);
670 print_group(grp, pretty);
671 return (EXIT_SUCCESS);
674 if ((rc = chggrent(name, grp)) != 0) {
676 errx(EX_IOERR, "group '%s' not available (NIS?)",
679 err(EX_IOERR, "group update");
685 /* grp may have been invalidated */
686 if ((grp = GETGRNAM(name)) == NULL)
687 errx(EX_SOFTWARE, "group disappeared during update");
689 pw_log(cnf, M_UPDATE, W_GROUP, "%s(%ju)", grp->gr_name,
690 (uintmax_t)grp->gr_gid);
692 if (nis && nis_update() == 0)
693 pw_log(cnf, M_UPDATE, W_GROUP, "NIS maps updated");
695 return (EXIT_SUCCESS);