3 * David L. Nugent. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 static const char rcsid[] =
45 static struct passwd *lookup_pwent(const char *user);
46 static void delete_members(struct group *grp, char *list);
47 static int print_group(struct group * grp, bool pretty);
48 static gid_t gr_gidpolicy(struct userconf * cnf, intmax_t id);
51 grp_set_passwd(struct group *grp, bool update, int fd, bool precrypted)
62 grp->gr_passwd = "*"; /* No access */
66 if ((istty = isatty(fd))) {
70 tcsetattr(fd, TCSANOW, &n);
71 printf("%sassword for group %s:", update ? "New p" : "P",
75 b = read(fd, line, sizeof(line) - 1);
76 if (istty) { /* Restore state */
77 tcsetattr(fd, TCSANOW, &t);
82 err(EX_OSERR, "-h file descriptor");
84 if ((p = strpbrk(line, " \t\r\n")) != NULL)
87 errx(EX_DATAERR, "empty password read on file descriptor %d",
90 if (strchr(line, ':') != 0)
91 errx(EX_DATAERR, "wrong encrypted passwrd");
92 grp->gr_passwd = line;
94 grp->gr_passwd = pw_pwcrypt(line);
98 pw_groupnext(struct userconf *cnf, bool quiet)
100 gid_t next = gr_gidpolicy(cnf, -1);
104 printf("%ju\n", (uintmax_t)next);
106 return (EXIT_SUCCESS);
109 static struct group *
110 getgroup(char *name, intmax_t id, bool fatal)
114 if (id < 0 && name == NULL)
115 errx(EX_DATAERR, "groupname or id required");
116 grp = (name != NULL) ? GETGRNAM(name) : GETGRGID(id);
121 errx(EX_DATAERR, "unknown gid `%ju'", id);
122 errx(EX_DATAERR, "unknown group `%s'", name);
128 * Lookup a passwd entry using a name or UID.
130 static struct passwd *
131 lookup_pwent(const char *user)
135 if ((pwd = GETPWNAM(user)) == NULL &&
136 (!isdigit((unsigned char)*user) ||
137 (pwd = getpwuid((uid_t) atoi(user))) == NULL))
138 errx(EX_NOUSER, "user `%s' does not exist", user);
145 * Delete requested members from a group.
148 delete_members(struct group *grp, char *list)
153 if (grp->gr_mem == NULL)
156 for (p = strtok(list, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
157 for (k = 0; grp->gr_mem[k] != NULL; k++) {
158 if (strcmp(grp->gr_mem[k], p) == 0)
161 if (grp->gr_mem[k] == NULL) /* No match */
164 for (; grp->gr_mem[k] != NULL; k++)
165 grp->gr_mem[k] = grp->gr_mem[k+1];
170 gr_gidpolicy(struct userconf * cnf, intmax_t id)
174 gid_t gid = (gid_t) - 1;
177 * Check the given gid, if any
182 if ((grp = GETGRGID(gid)) != NULL && conf.checkduplicate)
183 errx(EX_DATAERR, "gid `%ju' has already been allocated",
184 (uintmax_t)grp->gr_gid);
189 * We need to allocate the next available gid under one of
190 * two policies a) Grab the first unused gid b) Grab the
191 * highest possible unused gid
193 if (cnf->min_gid >= cnf->max_gid) { /* Sanity claus^H^H^H^Hheck */
195 cnf->max_gid = 32000;
197 bm = bm_alloc(cnf->max_gid - cnf->min_gid + 1);
200 * Now, let's fill the bitmap from the password file
203 while ((grp = GETGRENT()) != NULL)
204 if ((gid_t)grp->gr_gid >= (gid_t)cnf->min_gid &&
205 (gid_t)grp->gr_gid <= (gid_t)cnf->max_gid)
206 bm_setbit(&bm, grp->gr_gid - cnf->min_gid);
210 * Then apply the policy, with fallback to reuse if necessary
213 gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
215 gid = (gid_t) (bm_lastset(&bm) + 1);
216 if (!bm_isset(&bm, gid))
219 gid = (gid_t) (bm_firstunset(&bm) + cnf->min_gid);
223 * Another sanity check
225 if (gid < cnf->min_gid || gid > cnf->max_gid)
226 errx(EX_SOFTWARE, "unable to allocate a new gid - range fully "
233 print_group(struct group * grp, bool pretty)
239 printf("Group Name: %-15s #%lu\n"
241 grp->gr_name, (long) grp->gr_gid);
242 if (grp->gr_mem != NULL) {
243 for (i = 0; grp->gr_mem[i]; i++)
244 printf("%s%s", i ? "," : "", grp->gr_mem[i]);
246 fputs("\n\n", stdout);
247 return (EXIT_SUCCESS);
253 return (EXIT_SUCCESS);
257 pw_group_next(int argc, char **argv, char *arg1 __unused)
259 struct userconf *cnf;
260 const char *cfg = NULL;
264 while ((ch = getopt(argc, argv, "Cq")) != -1) {
276 freopen(_PATH_DEVNULL, "w", stderr);
277 cnf = get_userconfig(cfg);
278 return (pw_groupnext(cnf, quiet));
282 pw_group_show(int argc, char **argv, char *arg1)
284 struct group *grp = NULL;
288 bool all, force, quiet, pretty;
290 all = force = quiet = pretty = false;
292 struct group fakegroup = {
300 if (arg1[strspn(arg1, "0123456789")] == '\0')
301 id = pw_checkid(arg1, GID_MAX);
306 while ((ch = getopt(argc, argv, "C:qn:g:FPa")) != -1) {
309 /* ignore compatibility */
318 id = pw_checkid(optarg, GID_MAX);
333 freopen(_PATH_DEVNULL, "w", stderr);
337 while ((grp = GETGRENT()) != NULL)
338 print_group(grp, pretty);
340 return (EXIT_SUCCESS);
343 grp = getgroup(name, id, !force);
347 return (print_group(grp, pretty));
351 pw_group_del(int argc, char **argv, char *arg1)
353 struct userconf *cnf = NULL;
354 struct group *grp = NULL;
356 const char *cfg = NULL;
363 if (arg1[strspn(arg1, "0123456789")] == '\0')
364 id = pw_checkid(arg1, GID_MAX);
369 while ((ch = getopt(argc, argv, "C:qn:g:Y")) != -1) {
381 id = pw_checkid(optarg, GID_MAX);
390 freopen(_PATH_DEVNULL, "w", stderr);
391 grp = getgroup(name, id, true);
392 cnf = get_userconfig(cfg);
395 err(EX_IOERR, "group '%s' not available (NIS?)", name);
397 err(EX_IOERR, "group update");
398 pw_log(cnf, M_DELETE, W_GROUP, "%s(%ju) removed", name,
401 if (nis && nis_update() == 0)
402 pw_log(cnf, M_DELETE, W_GROUP, "NIS maps updated");
404 return (EXIT_SUCCESS);
408 grp_has_member(struct group *grp, const char *name)
412 for (j = 0; grp->gr_mem != NULL && grp->gr_mem[j] != NULL; j++)
413 if (strcmp(grp->gr_mem[j], name) == 0)
419 grp_add_members(struct group **grp, char *members)
427 for (p = strtok(members, tok); p != NULL; p = strtok(NULL, tok)) {
428 pwd = lookup_pwent(p);
429 if (grp_has_member(*grp, pwd->pw_name))
431 *grp = gr_add(*grp, pwd->pw_name);
436 groupadd(struct userconf *cnf, char *name, gid_t id, char *members, int fd,
437 bool dryrun, bool pretty, bool precrypted)
442 struct group fakegroup = {
450 grp->gr_name = pw_checkname(name, 0);
451 grp->gr_passwd = "*";
452 grp->gr_gid = gr_gidpolicy(cnf, id);
456 * This allows us to set a group password Group passwords is an
457 * antique idea, rarely used and insecure (no secure database) Should
458 * be discouraged, but it is apparently still supported by some
461 grp_set_passwd(grp, false, fd, precrypted);
462 grp_add_members(&grp, members);
464 return (print_group(grp, pretty));
466 if ((rc = addgrent(grp)) != 0) {
468 errx(EX_IOERR, "group '%s' already exists",
471 err(EX_IOERR, "group update");
474 pw_log(cnf, M_ADD, W_GROUP, "%s(%ju)", grp->gr_name,
475 (uintmax_t)grp->gr_gid);
477 return (EXIT_SUCCESS);
481 pw_group_add(int argc, char **argv, char *arg1)
483 struct userconf *cnf = NULL;
485 char *members = NULL;
486 const char *cfg = NULL;
489 bool quiet, precrypted, dryrun, pretty, nis;
491 quiet = precrypted = dryrun = pretty = nis = false;
494 if (arg1[strspn(arg1, "0123456789")] == '\0')
495 id = pw_checkid(arg1, GID_MAX);
500 while ((ch = getopt(argc, argv, "C:qn:g:h:H:M:oNPY")) != -1) {
512 id = pw_checkid(optarg, GID_MAX);
516 errx(EX_USAGE, "'-h' and '-H' are mutually "
517 "exclusive options");
518 fd = pw_checkfd(optarg);
521 errx(EX_USAGE, "-H expects a file descriptor");
525 errx(EX_USAGE, "'-h' and '-H' are mutually "
526 "exclusive options");
527 fd = pw_checkfd(optarg);
533 conf.checkduplicate = false;
548 freopen(_PATH_DEVNULL, "w", stderr);
550 errx(EX_DATAERR, "group name required");
551 if (GETGRNAM(name) != NULL)
552 errx(EX_DATAERR, "group name `%s' already exists", name);
553 cnf = get_userconfig(cfg);
554 rc = groupadd(cnf, name, gr_gidpolicy(cnf, id), members, fd, dryrun,
556 if (nis && rc == EXIT_SUCCESS && nis_update() == 0)
557 pw_log(cnf, M_ADD, W_GROUP, "NIS maps updated");
563 pw_group_mod(int argc, char **argv, char *arg1)
565 struct userconf *cnf;
566 struct group *grp = NULL;
567 const char *cfg = NULL;
568 char *oldmembers = NULL;
569 char *members = NULL;
570 char *newmembers = NULL;
571 char *newname = NULL;
575 bool quiet, pretty, dryrun, nis, precrypted;
577 quiet = pretty = dryrun = nis = precrypted = false;
580 if (arg1[strspn(arg1, "0123456789")] == '\0')
581 id = pw_checkid(arg1, GID_MAX);
586 while ((ch = getopt(argc, argv, "C:qn:d:g:l:h:H:M:m:NPY")) != -1) {
598 id = pw_checkid(optarg, GID_MAX);
608 errx(EX_USAGE, "'-h' and '-H' are mutually "
609 "exclusive options");
610 fd = pw_checkfd(optarg);
613 errx(EX_USAGE, "-H expects a file descriptor");
617 errx(EX_USAGE, "'-h' and '-H' are mutually "
618 "exclusive options");
619 fd = pw_checkfd(optarg);
639 freopen(_PATH_DEVNULL, "w", stderr);
640 cnf = get_userconfig(cfg);
641 grp = getgroup(name, id, true);
648 grp->gr_name = pw_checkname(newname, 0);
650 grp_set_passwd(grp, true, fd, precrypted);
652 * Keep the same logic as old code for now:
653 * if -M is passed, -d and -m are ignored
654 * then id -d, -m is ignored
660 grp_add_members(&grp, members);
661 } else if (oldmembers) {
662 delete_members(grp, oldmembers);
663 } else if (newmembers) {
664 grp_add_members(&grp, newmembers);
668 print_group(grp, pretty);
669 return (EXIT_SUCCESS);
672 if ((rc = chggrent(name, grp)) != 0) {
674 errx(EX_IOERR, "group '%s' not available (NIS?)",
677 err(EX_IOERR, "group update");
683 /* grp may have been invalidated */
684 if ((grp = GETGRNAM(name)) == NULL)
685 errx(EX_SOFTWARE, "group disappeared during update");
687 pw_log(cnf, M_UPDATE, W_GROUP, "%s(%ju)", grp->gr_name,
688 (uintmax_t)grp->gr_gid);
690 if (nis && nis_update() == 0)
691 pw_log(cnf, M_UPDATE, W_GROUP, "NIS maps updated");
693 return (EXIT_SUCCESS);