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
29 static const char rcsid[] =
33 #include <sys/param.h>
34 #include <sys/resource.h>
36 #include <sys/types.h>
47 #include <login_cap.h>
58 #define LOGNAMESIZE (MAXLOGNAME-1)
60 static char locked_str[] = "*LOCKED*";
62 static struct passwd fakeuser = {
76 static int print_user(struct passwd *pwd, bool pretty, bool v7);
77 static uid_t pw_uidpolicy(struct userconf *cnf, intmax_t id);
78 static uid_t pw_gidpolicy(struct userconf *cnf, char *grname, char *nam,
79 gid_t prefer, bool dryrun);
80 static char *pw_homepolicy(struct userconf * cnf, char *homedir,
82 static char *pw_shellpolicy(struct userconf * cnf);
83 static char *pw_password(struct userconf * cnf, char const * user,
85 static char *shell_path(char const * path, char *shells[], char *sh);
86 static void rmat(uid_t uid);
87 static void rmopie(char const * name);
90 mkdir_home_parents(int dfd, const char *dir)
96 errx(EX_DATAERR, "invalid base directory for home '%s'", dir);
100 if (fstatat(dfd, dir, &st, 0) != -1) {
101 if (S_ISDIR(st.st_mode))
103 errx(EX_OSFILE, "root home `/%s' is not a directory", dir);
108 errx(EX_UNAVAILABLE, "out of memory");
110 tmp = strrchr(dirs, '/');
118 * This is a kludge especially for Joerg :)
119 * If the home directory would be created in the root partition, then
120 * we really create it under /usr which is likely to have more space.
121 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
123 if (strchr(dirs, '/') == NULL) {
124 asprintf(&tmp, "usr/%s", dirs);
126 errx(EX_UNAVAILABLE, "out of memory");
127 if (mkdirat(dfd, tmp, _DEF_DIRMODE) != -1 || errno == EEXIST) {
128 fchownat(dfd, tmp, 0, 0, 0);
129 symlinkat(tmp, dfd, dirs);
134 if (fstatat(dfd, dirs, &st, 0) == -1) {
135 while ((tmp = strchr(tmp + 1, '/')) != NULL) {
137 if (fstatat(dfd, dirs, &st, 0) == -1) {
138 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1)
139 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs);
144 if (fstatat(dfd, dirs, &st, 0) == -1) {
145 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1)
146 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs);
147 fchownat(dfd, dirs, 0, 0, 0);
154 create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd,
155 const char *skeldir, mode_t homemode, bool update)
159 /* Create home parents directories */
160 mkdir_home_parents(conf.rootfd, pwd->pw_dir);
162 if (skeldir != NULL && *skeldir != '\0') {
165 skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC);
168 copymkdir(conf.rootfd, pwd->pw_dir, skelfd, homemode, pwd->pw_uid,
170 pw_log(cnf, update ? M_UPDATE : M_ADD, W_USER, "%s(%ju) home %s made",
171 pwd->pw_name, (uintmax_t)pwd->pw_uid, pwd->pw_dir);
175 pw_set_passwd(struct passwd *pwd, int fd, bool precrypted, bool update)
180 char line[_PASSWORD_LEN+1];
184 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
185 pwd->pw_passwd = "*"; /* No access */
191 if ((istty = isatty(fd))) {
192 if (tcgetattr(fd, &t) == -1)
196 n.c_lflag &= ~(ECHO);
197 tcsetattr(fd, TCSANOW, &n);
198 printf("%s%spassword for user %s:",
199 update ? "new " : "",
200 precrypted ? "encrypted " : "",
205 b = read(fd, line, sizeof(line) - 1);
206 if (istty) { /* Restore state */
207 tcsetattr(fd, TCSANOW, &t);
213 err(EX_IOERR, "-%c file descriptor",
214 precrypted ? 'H' : 'h');
216 if ((p = strpbrk(line, "\r\n")) != NULL)
219 errx(EX_DATAERR, "empty password read on file descriptor %d",
222 if (strchr(line, ':') != NULL)
223 errx(EX_DATAERR, "bad encrypted password");
224 pwd->pw_passwd = strdup(line);
226 lc = login_getpwclass(pwd);
228 login_setcryptfmt(lc, "sha512", NULL) == NULL)
229 warn("setting crypt(3) format");
231 pwd->pw_passwd = pw_pwcrypt(line);
237 perform_chgpwent(const char *name, struct passwd *pwd, char *nispasswd)
240 struct passwd *nispwd;
242 /* duplicate for nis so that chgpwent is not modifying before NIS */
243 if (nispasswd && *nispasswd == '/')
244 nispwd = pw_dup(pwd);
246 rc = chgpwent(name, pwd);
248 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name);
250 err(EX_IOERR, "passwd file update");
252 if (nispasswd && *nispasswd == '/') {
253 rc = chgnispwent(nispasswd, name, nispwd);
255 warn("User '%s' not found in NIS passwd", pwd->pw_name);
257 warn("NIS passwd update");
258 /* NOTE: NIS-only update errors are not fatal */
263 * The M_LOCK and M_UNLOCK functions simply add or remove
264 * a "*LOCKED*" prefix from in front of the password to
265 * prevent it decoding correctly, and therefore prevents
266 * access. Of course, this only prevents access via
267 * password authentication (not ssh, kerberos or any
268 * other method that does not use the UNIX password) but
269 * that is a known limitation.
272 pw_userlock(char *arg1, int mode)
274 struct passwd *pwd = NULL;
275 char *passtmp = NULL;
278 uid_t id = (uid_t)-1;
281 errx(EX_NOPERM, "you must be root");
284 errx(EX_DATAERR, "username or id required");
287 if (arg1[strspn(name, "0123456789")] == '\0')
288 id = pw_checkid(name, UID_MAX);
290 pwd = GETPWNAM(pw_checkname(name, 0));
291 if (pwd == NULL && id != (uid_t)-1) {
298 errx(EX_NOUSER, "no such name or uid `%ju'", (uintmax_t) id);
299 errx(EX_NOUSER, "no such user `%s'", name);
305 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0)
307 if (mode == M_LOCK && locked)
308 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
309 if (mode == M_UNLOCK && !locked)
310 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
312 if (mode == M_LOCK) {
313 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd);
314 if (passtmp == NULL) /* disaster */
315 errx(EX_UNAVAILABLE, "out of memory");
316 pwd->pw_passwd = passtmp;
318 pwd->pw_passwd += sizeof(locked_str)-1;
321 perform_chgpwent(name, pwd, NULL);
324 return (EXIT_SUCCESS);
328 pw_uidpolicy(struct userconf * cnf, intmax_t id)
332 uid_t uid = (uid_t) - 1;
335 * Check the given uid, if any
340 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate)
341 errx(EX_DATAERR, "uid `%ju' has already been allocated",
342 (uintmax_t)pwd->pw_uid);
346 * We need to allocate the next available uid under one of
347 * two policies a) Grab the first unused uid b) Grab the
348 * highest possible unused uid
350 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
351 * claus^H^H^H^Hheck */
353 cnf->max_uid = 32000;
355 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
358 * Now, let's fill the bitmap from the password file
361 while ((pwd = GETPWENT()) != NULL)
362 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
363 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
367 * Then apply the policy, with fallback to reuse if necessary
369 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
370 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
373 * Another sanity check
375 if (uid < cnf->min_uid || uid > cnf->max_uid)
376 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
382 pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, gid_t prefer, bool dryrun)
385 gid_t gid = (uid_t) - 1;
388 * Check the given gid, if any
392 if ((grp = GETGRNAM(grname)) == NULL) {
393 gid = pw_checkid(grname, GID_MAX);
397 } else if ((grp = GETGRNAM(nam)) != NULL &&
398 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) {
399 gid = grp->gr_gid; /* Already created? Use it anyway... */
404 * We need to auto-create a group with the user's name. We
405 * can send all the appropriate output to our sister routine
406 * bit first see if we can create a group with gid==uid so we
407 * can keep the user and group ids in sync. We purposely do
408 * NOT check the gid range if we can force the sync. If the
409 * user's name dups an existing group, then the group add
410 * function will happily handle that case for us and exit.
412 if (GETGRGID(prefer) == NULL)
415 gid = pw_groupnext(cnf, true);
418 grid = pw_groupnext(cnf, true);
419 groupadd(cnf, nam, grid, NULL, -1, false, false, false);
420 if ((grp = GETGRNAM(nam)) != NULL)
429 pw_homepolicy(struct userconf * cnf, char *homedir, const char *user)
431 static char home[128];
436 if (cnf->home == NULL || *cnf->home == '\0')
437 errx(EX_CONFIG, "no base home directory set");
438 snprintf(home, sizeof(home), "%s/%s", cnf->home, user);
444 shell_path(char const * path, char *shells[], char *sh)
446 if (sh != NULL && (*sh == '/' || *sh == '\0'))
447 return sh; /* specified full path or forced none */
450 char paths[_UC_MAXLINE];
453 * We need to search paths
455 strlcpy(paths, path, sizeof(paths));
456 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
458 static char shellpath[256];
461 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh);
462 if (access(shellpath, X_OK) == 0)
465 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
466 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]);
467 if (access(shellpath, X_OK) == 0)
472 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
473 errx(EX_CONFIG, "no default shell available or defined");
479 pw_shellpolicy(struct userconf * cnf)
482 return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default);
487 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./";
490 pw_pwcrypt(char *password)
493 char salt[SALTSIZE + 1];
495 static char buf[256];
499 * Calculate a salt value
501 for (i = 0; i < SALTSIZE; i++)
502 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)];
503 salt[SALTSIZE] = '\0';
505 cryptpw = crypt(password, salt);
507 errx(EX_CONFIG, "crypt(3) failure");
508 pwlen = strlcpy(buf, cryptpw, sizeof(buf));
509 assert(pwlen < sizeof(buf));
514 pw_password(struct userconf * cnf, char const * user, bool dryrun)
519 switch (cnf->default_password) {
520 case -1: /* Random password */
521 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
522 for (i = 0; i < l; i++)
523 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)];
527 * We give this information back to the user
529 if (conf.fd == -1 && !dryrun) {
530 if (isatty(STDOUT_FILENO))
531 printf("Password for '%s' is: ", user);
532 printf("%s\n", pwbuf);
537 case -2: /* No password at all! */
540 case 0: /* No login - default */
544 case 1: /* user's name */
545 strlcpy(pwbuf, user, sizeof(pwbuf));
548 return pw_pwcrypt(pwbuf);
552 print_user(struct passwd * pwd, bool pretty, bool v7)
556 struct group *grp = GETGRGID(pwd->pw_gid);
557 char uname[60] = "User &", office[60] = "[None]",
558 wphone[60] = "[None]", hphone[60] = "[None]";
559 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
563 p = v7 ? pw_make_v7(pwd) : pw_make(pwd);
566 return (EXIT_SUCCESS);
569 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
570 strlcpy(uname, p, sizeof(uname));
571 if ((p = strtok(NULL, ",")) != NULL) {
572 strlcpy(office, p, sizeof(office));
573 if ((p = strtok(NULL, ",")) != NULL) {
574 strlcpy(wphone, p, sizeof(wphone));
575 if ((p = strtok(NULL, "")) != NULL) {
576 strlcpy(hphone, p, sizeof(hphone));
582 * Handle '&' in gecos field
584 if ((p = strchr(uname, '&')) != NULL) {
585 int l = strlen(pwd->pw_name);
588 memmove(p + l, p + 1, m);
589 memmove(p, pwd->pw_name, l);
590 *p = (char) toupper((unsigned char)*p);
592 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
593 strftime(acexpire, sizeof acexpire, "%c", tptr);
594 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
595 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
596 printf("Login Name: %-15s #%-12ju Group: %-15s #%ju\n"
598 " Home: %-26.26s Class: %s\n"
599 " Shell: %-26.26s Office: %s\n"
600 "Work Phone: %-26.26s Home Phone: %s\n"
601 "Acc Expire: %-26.26s Pwd Expire: %s\n",
602 pwd->pw_name, (uintmax_t)pwd->pw_uid,
603 grp ? grp->gr_name : "(invalid)", (uintmax_t)pwd->pw_gid,
604 uname, pwd->pw_dir, pwd->pw_class,
605 pwd->pw_shell, office, wphone, hphone,
609 while ((grp=GETGRENT()) != NULL) {
611 if (grp->gr_mem != NULL) {
612 while (grp->gr_mem[i] != NULL) {
613 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) {
614 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
622 printf("%s", j ? "\n" : "");
623 return (EXIT_SUCCESS);
627 pw_checkname(char *name, int gecos)
630 const char *badchars, *ch, *showtype;
636 /* See if the name is valid as a gecos (comment) field. */
638 showtype = "gecos field";
640 /* See if the name is valid as a userid or group. */
641 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
642 showtype = "userid/group name";
643 /* Userids and groups can not have a leading '-'. */
649 if (strchr(badchars, *ch) != NULL ||
650 (!gecos && *ch < ' ') ||
655 /* 8-bit characters are only allowed in GECOS fields */
656 if (!gecos && (*ch & 0x80)) {
664 * A `$' is allowed as the final character for userids and groups,
665 * mainly for the benefit of samba.
667 if (reject && !gecos) {
668 if (*ch == '$' && *(ch + 1) == '\0') {
674 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
675 ? "`%c'" : "0x%02x", *ch);
676 errx(EX_DATAERR, "invalid character %s at position %td in %s",
677 showch, (ch - name), showtype);
679 if (!gecos && (ch - name) > LOGNAMESIZE)
680 errx(EX_USAGE, "name too long `%s' (max is %d)", name,
689 DIR *d = opendir("/var/at/jobs");
694 while ((e = readdir(d)) != NULL) {
697 if (strncmp(e->d_name, ".lock", 5) != 0 &&
698 stat(e->d_name, &st) == 0 &&
699 !S_ISDIR(st.st_mode) &&
701 char tmp[MAXPATHLEN];
703 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s",
713 rmopie(char const * name)
721 if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1)
724 fp = fdopen(fd, "r+");
727 while (fgets(tmp, sizeof(tmp), fp) != NULL) {
728 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') {
729 /* Comment username out */
730 if (fseek(fp, atofs, SEEK_SET) == 0)
731 fwrite("#", 1, 1, fp);
737 * If we got an error of any sort, don't update!
743 pw_user_next(int argc, char **argv, char *name __unused)
745 struct userconf *cnf = NULL;
746 const char *cfg = NULL;
751 while ((ch = getopt(argc, argv, "Cq")) != -1) {
763 freopen(_PATH_DEVNULL, "w", stderr);
765 cnf = get_userconfig(cfg);
767 next = pw_uidpolicy(cnf, -1);
769 printf("%ju:", (uintmax_t)next);
770 pw_groupnext(cnf, quiet);
772 return (EXIT_SUCCESS);
776 pw_user_show(int argc, char **argv, char *arg1)
778 struct passwd *pwd = NULL;
789 if (arg1[strspn(arg1, "0123456789")] == '\0')
790 id = pw_checkid(arg1, UID_MAX);
795 while ((ch = getopt(argc, argv, "C:qn:u:FPa7")) != -1) {
798 /* ignore compatibility */
807 id = pw_checkid(optarg, UID_MAX);
825 freopen(_PATH_DEVNULL, "w", stderr);
829 while ((pwd = GETPWENT()) != NULL)
830 print_user(pwd, pretty, v7);
832 return (EXIT_SUCCESS);
835 if (id < 0 && name == NULL)
836 errx(EX_DATAERR, "username or id required");
838 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
844 errx(EX_NOUSER, "no such uid `%ju'",
846 errx(EX_NOUSER, "no such user `%s'", name);
850 return (print_user(pwd, pretty, v7));
854 pw_user_del(int argc, char **argv, char *arg1)
856 struct userconf *cnf = NULL;
857 struct passwd *pwd = NULL;
858 struct group *gr, *grp;
860 char grname[MAXLOGNAME];
861 char *nispasswd = NULL;
862 char file[MAXPATHLEN];
863 char home[MAXPATHLEN];
864 const char *cfg = NULL;
869 bool deletehome = false;
873 if (arg1[strspn(arg1, "0123456789")] == '\0')
874 id = pw_checkid(arg1, UID_MAX);
879 while ((ch = getopt(argc, argv, "C:qn:u:rYy:")) != -1) {
891 id = pw_checkid(optarg, UID_MAX);
906 freopen(_PATH_DEVNULL, "w", stderr);
908 if (id < 0 && name == NULL)
909 errx(EX_DATAERR, "username or id required");
911 cnf = get_userconfig(cfg);
913 if (nispasswd == NULL)
914 nispasswd = cnf->nispasswd;
916 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
919 errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id);
920 errx(EX_NOUSER, "no such user `%s'", name);
923 if (PWF._altdir == PWF_REGULAR &&
924 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
925 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
926 if (!nis && nispasswd && *nispasswd != '/')
927 errx(EX_NOUSER, "Cannot remove NIS user `%s'",
930 errx(EX_NOUSER, "Cannot remove non local user `%s'",
939 if (strcmp(pwd->pw_name, "root") == 0)
940 errx(EX_DATAERR, "cannot remove user 'root'");
942 /* Remove opie record from /etc/opiekeys */
943 if (PWALTDIR() != PWF_ALT)
944 rmopie(pwd->pw_name);
947 /* Remove crontabs */
948 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name);
949 if (access(file, F_OK) == 0) {
950 snprintf(file, sizeof(file), "crontab -u %s -r",
957 * Save these for later, since contents of pwd may be
958 * invalidated by deletion
960 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name);
961 strlcpy(home, pwd->pw_dir, sizeof(home));
962 gr = GETGRGID(pwd->pw_gid);
964 strlcpy(grname, gr->gr_name, LOGNAMESIZE);
970 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
972 err(EX_IOERR, "passwd update");
974 if (nis && nispasswd && *nispasswd=='/') {
975 rc = delnispwent(nispasswd, name);
977 warnx("WARNING: user '%s' does not exist in NIS passwd",
980 warn("WARNING: NIS passwd update");
983 grp = GETGRNAM(name);
985 (grp->gr_mem == NULL || *grp->gr_mem == NULL) &&
986 strcmp(name, grname) == 0)
987 delgrent(GETGRNAM(name));
989 while ((grp = GETGRENT()) != NULL) {
991 char group[MAXLOGNAME];
992 if (grp->gr_mem == NULL)
995 for (i = 0; grp->gr_mem[i] != NULL; i++) {
996 if (strcmp(grp->gr_mem[i], name) != 0)
999 for (j = i; grp->gr_mem[j] != NULL; j++)
1000 grp->gr_mem[j] = grp->gr_mem[j+1];
1001 strlcpy(group, grp->gr_name, MAXLOGNAME);
1002 chggrent(group, grp);
1007 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) account removed", name,
1010 /* Remove mail file */
1011 if (PWALTDIR() != PWF_ALT)
1012 unlinkat(conf.rootfd, file + 1, 0);
1014 /* Remove at jobs */
1015 if (!PWALTDIR() && getpwuid(id) == NULL)
1018 /* Remove home directory and contents */
1019 if (PWALTDIR() != PWF_ALT && deletehome && *home == '/' &&
1020 GETPWUID(id) == NULL &&
1021 fstatat(conf.rootfd, home + 1, &st, 0) != -1) {
1022 rm_r(conf.rootfd, home, id);
1023 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) home '%s' %s"
1024 "removed", name, (uintmax_t)id, home,
1025 fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not "
1029 return (EXIT_SUCCESS);
1033 pw_user_lock(int argc, char **argv, char *arg1)
1037 while ((ch = getopt(argc, argv, "Cq")) != -1) {
1046 return (pw_userlock(arg1, M_LOCK));
1050 pw_user_unlock(int argc, char **argv, char *arg1)
1054 while ((ch = getopt(argc, argv, "Cq")) != -1) {
1063 return (pw_userlock(arg1, M_UNLOCK));
1066 static struct group *
1067 group_from_name_or_id(char *name)
1069 const char *errstr = NULL;
1073 if ((grp = GETGRNAM(name)) == NULL) {
1074 id = strtounum(name, 0, GID_MAX, &errstr);
1076 errx(EX_NOUSER, "group `%s' does not exist", name);
1079 errx(EX_NOUSER, "group `%s' does not exist", name);
1086 split_groups(StringList **groups, char *groupsstr)
1090 char tok[] = ", \t";
1092 if (*groups == NULL)
1093 *groups = sl_init();
1094 for (p = strtok(groupsstr, tok); p != NULL; p = strtok(NULL, tok)) {
1095 grp = group_from_name_or_id(p);
1096 sl_add(*groups, newstr(grp->gr_name));
1101 validate_grname(struct userconf *cnf, char *group)
1105 if (group == NULL || *group == '\0') {
1106 cnf->default_group = "";
1109 grp = group_from_name_or_id(group);
1110 cnf->default_group = newstr(grp->gr_name);
1114 validate_mode(char *mode)
1119 if ((set = setmode(mode)) == NULL)
1120 errx(EX_DATAERR, "invalid directory creation mode '%s'", mode);
1122 m = getmode(set, _DEF_DIRMODE);
1128 mix_config(struct userconf *cmdcnf, struct userconf *cfg)
1131 if (cmdcnf->default_password == 0)
1132 cmdcnf->default_password = cfg->default_password;
1133 if (cmdcnf->reuse_uids == 0)
1134 cmdcnf->reuse_uids = cfg->reuse_uids;
1135 if (cmdcnf->reuse_gids == 0)
1136 cmdcnf->reuse_gids = cfg->reuse_gids;
1137 if (cmdcnf->nispasswd == NULL)
1138 cmdcnf->nispasswd = cfg->nispasswd;
1139 if (cmdcnf->dotdir == NULL)
1140 cmdcnf->dotdir = cfg->dotdir;
1141 if (cmdcnf->newmail == NULL)
1142 cmdcnf->newmail = cfg->newmail;
1143 if (cmdcnf->logfile == NULL)
1144 cmdcnf->logfile = cfg->logfile;
1145 if (cmdcnf->home == NULL)
1146 cmdcnf->home = cfg->home;
1147 if (cmdcnf->homemode == 0)
1148 cmdcnf->homemode = cfg->homemode;
1149 if (cmdcnf->shelldir == NULL)
1150 cmdcnf->shelldir = cfg->shelldir;
1151 if (cmdcnf->shells == NULL)
1152 cmdcnf->shells = cfg->shells;
1153 if (cmdcnf->shell_default == NULL)
1154 cmdcnf->shell_default = cfg->shell_default;
1155 if (cmdcnf->default_group == NULL)
1156 cmdcnf->default_group = cfg->default_group;
1157 if (cmdcnf->groups == NULL)
1158 cmdcnf->groups = cfg->groups;
1159 if (cmdcnf->default_class == NULL)
1160 cmdcnf->default_class = cfg->default_class;
1161 if (cmdcnf->min_uid == 0)
1162 cmdcnf->min_uid = cfg->min_uid;
1163 if (cmdcnf->max_uid == 0)
1164 cmdcnf->max_uid = cfg->max_uid;
1165 if (cmdcnf->min_gid == 0)
1166 cmdcnf->min_gid = cfg->min_gid;
1167 if (cmdcnf->max_gid == 0)
1168 cmdcnf->max_gid = cfg->max_gid;
1169 if (cmdcnf->expire_days == 0)
1170 cmdcnf->expire_days = cfg->expire_days;
1171 if (cmdcnf->password_days == 0)
1172 cmdcnf->password_days = cfg->password_days;
1176 pw_user_add(int argc, char **argv, char *arg1)
1178 struct userconf *cnf, *cmdcnf;
1182 char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y";
1183 char line[_PASSWORD_LEN+1], path[MAXPATHLEN];
1184 char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname;
1185 char *default_passwd, *name, *p;
1186 const char *cfg = NULL;
1191 int rc, ch, fd = -1;
1193 bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf;
1195 dryrun = nis = pretty = quiet = createhome = precrypted = false;
1197 gecos = homedir = skel = userid = groupid = default_passwd = NULL;
1198 grname = name = NULL;
1200 if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL)
1201 err(EXIT_FAILURE, "calloc()");
1204 if (arg1[strspn(arg1, "0123456789")] == '\0')
1205 id = pw_checkid(arg1, UID_MAX);
1207 name = pw_checkname(arg1, 0);
1210 while ((ch = getopt(argc, argv, args)) != -1) {
1219 name = pw_checkname(optarg, 0);
1225 gecos = pw_checkname(optarg, 1);
1232 cmdcnf->expire_days = parse_date(now, optarg);
1236 cmdcnf->password_days = parse_date(now, optarg);
1239 validate_grname(cmdcnf, optarg);
1243 split_groups(&cmdcnf->groups, optarg);
1249 cmdcnf->homemode = validate_mode(optarg);
1252 walk = skel = optarg;
1255 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1256 errx(EX_OSFILE, "skeleton `%s' does not "
1258 if (!S_ISDIR(st.st_mode))
1259 errx(EX_OSFILE, "skeleton `%s' is not a "
1261 cmdcnf->dotdir = skel;
1264 cmdcnf->shell_default = optarg;
1267 conf.checkduplicate = false;
1270 cmdcnf->default_class = pw_checkname(optarg, 0);
1276 default_passwd = optarg;
1280 errx(EX_USAGE, "'-h' and '-H' are mutually "
1281 "exclusive options");
1282 fd = pw_checkfd(optarg);
1285 errx(EX_USAGE, "-H expects a file descriptor");
1289 errx(EX_USAGE, "'-h' and '-H' are mutually "
1290 "exclusive options");
1291 fd = pw_checkfd(optarg);
1297 cmdcnf->home = optarg;
1306 cmdcnf->nispasswd = optarg;
1314 if (geteuid() != 0 && ! dryrun)
1315 errx(EX_NOPERM, "you must be root");
1318 freopen(_PATH_DEVNULL, "w", stderr);
1320 cnf = get_userconfig(cfg);
1322 mix_config(cmdcnf, cnf);
1324 cmdcnf->default_password = passwd_val(default_passwd,
1325 cnf->default_password);
1328 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
1329 if (userid != NULL) {
1330 if ((p = strtok(userid, ", \t")) != NULL)
1331 cmdcnf->min_uid = pw_checkid(p, UID_MAX);
1332 if (cmdcnf->min_uid == 0)
1333 cmdcnf->min_uid = 1000;
1334 if ((p = strtok(NULL, " ,\t")) != NULL)
1335 cmdcnf->max_uid = pw_checkid(p, UID_MAX);
1336 if (cmdcnf->max_uid == 0)
1337 cmdcnf->max_uid = 32000;
1339 if (groupid != NULL) {
1340 if ((p = strtok(groupid, ", \t")) != NULL)
1341 cmdcnf->min_gid = pw_checkid(p, GID_MAX);
1342 if (cmdcnf->min_gid == 0)
1343 cmdcnf->min_gid = 1000;
1344 if ((p = strtok(NULL, " ,\t")) != NULL)
1345 cmdcnf->max_gid = pw_checkid(p, GID_MAX);
1346 if (cmdcnf->max_gid == 0)
1347 cmdcnf->max_gid = 32000;
1349 if (write_userconfig(cmdcnf, cfg))
1350 return (EXIT_SUCCESS);
1351 err(EX_IOERR, "config update");
1355 id = pw_checkid(userid, UID_MAX);
1356 if (id < 0 && name == NULL)
1357 errx(EX_DATAERR, "user name or id required");
1360 errx(EX_DATAERR, "login name required");
1362 if (GETPWNAM(name) != NULL)
1363 errx(EX_DATAERR, "login name `%s' already exists", name);
1366 grname = cmdcnf->default_group;
1369 pwd->pw_name = name;
1370 pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : "";
1371 pwd->pw_uid = pw_uidpolicy(cmdcnf, id);
1372 pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name,
1373 (gid_t) pwd->pw_uid, dryrun);
1374 pwd->pw_change = cmdcnf->password_days;
1375 pwd->pw_expire = cmdcnf->expire_days;
1376 pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name);
1377 pwd->pw_shell = pw_shellpolicy(cmdcnf);
1378 lc = login_getpwclass(pwd);
1379 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1380 warn("setting crypt(3) format");
1382 pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun);
1383 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1384 warnx("WARNING: new account `%s' has a uid of 0 "
1385 "(superuser access!)", pwd->pw_name);
1387 pwd->pw_gecos = gecos;
1390 pw_set_passwd(pwd, fd, precrypted, false);
1393 return (print_user(pwd, pretty, false));
1395 if ((rc = addpwent(pwd)) != 0) {
1397 errx(EX_IOERR, "user '%s' already exists",
1400 err(EX_IOERR, "passwd file update");
1402 if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') {
1403 printf("%s\n", cmdcnf->nispasswd);
1404 rc = addnispwent(cmdcnf->nispasswd, pwd);
1406 warnx("User '%s' already exists in NIS passwd",
1409 warn("NIS passwd update");
1410 /* NOTE: we treat NIS-only update errors as non-fatal */
1413 if (cmdcnf->groups != NULL) {
1414 for (i = 0; i < cmdcnf->groups->sl_cur; i++) {
1415 grp = GETGRNAM(cmdcnf->groups->sl_str[i]);
1416 grp = gr_add(grp, pwd->pw_name);
1418 * grp can only be NULL in 2 cases:
1419 * - the new member is already a member
1420 * - a problem with memory occurs
1421 * in both cases we want to skip now.
1425 chggrent(grp->gr_name, grp);
1430 pwd = GETPWNAM(name);
1432 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1434 grp = GETGRGID(pwd->pw_gid);
1435 pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1436 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1437 grp ? grp->gr_name : "unknown",
1438 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1439 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1442 * let's touch and chown the user's mail file. This is not
1443 * strictly necessary under BSD with a 0755 maildir but it also
1444 * doesn't hurt anything to create the empty mailfile
1446 if (PWALTDIR() != PWF_ALT) {
1447 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR,
1449 /* Preserve contents & mtime */
1450 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600));
1451 fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid,
1452 AT_SYMLINK_NOFOLLOW);
1456 * Let's create and populate the user's home directory. Note
1457 * that this also `works' for editing users if -m is used, but
1458 * existing files will *not* be overwritten.
1460 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1461 *pwd->pw_dir == '/' && pwd->pw_dir[1])
1462 create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir,
1463 cmdcnf->homemode, false);
1465 if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail &&
1466 (fp = fopen(cnf->newmail, "r")) != NULL) {
1467 if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL)
1470 fprintf(pfp, "From: root\n" "To: %s\n"
1471 "Subject: Welcome!\n\n", pwd->pw_name);
1472 while (fgets(line, sizeof(line), fp) != NULL) {
1473 /* Do substitutions? */
1477 pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent",
1478 pwd->pw_name, (uintmax_t)pwd->pw_uid);
1483 if (nis && nis_update() == 0)
1484 pw_log(cnf, M_ADD, W_USER, "NIS maps updated");
1486 return (EXIT_SUCCESS);
1490 pw_user_mod(int argc, char **argv, char *arg1)
1492 struct userconf *cnf;
1495 StringList *groups = NULL;
1496 char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:";
1497 const char *cfg = NULL;
1498 char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell;
1499 char *passwd, *class, *nispasswd;
1505 bool quiet, createhome, pretty, dryrun, nis, edited;
1507 mode_t homemode = 0;
1508 time_t expire_days, password_days, now;
1510 expire_days = password_days = -1;
1511 gecos = homedir = grname = name = newname = skel = shell =NULL;
1513 class = nispasswd = NULL;
1514 quiet = createhome = pretty = dryrun = nis = precrypted = false;
1518 if (arg1[strspn(arg1, "0123456789")] == '\0')
1519 id = pw_checkid(arg1, UID_MAX);
1524 while ((ch = getopt(argc, argv, args)) != -1) {
1536 id = pw_checkid(optarg, UID_MAX);
1539 gecos = pw_checkname(optarg, 1);
1546 expire_days = parse_date(now, optarg);
1550 password_days = parse_date(now, optarg);
1553 group_from_name_or_id(optarg);
1557 split_groups(&groups, optarg);
1563 homemode = validate_mode(optarg);
1569 walk = skel = optarg;
1572 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1573 errx(EX_OSFILE, "skeleton `%s' does not "
1575 if (!S_ISDIR(st.st_mode))
1576 errx(EX_OSFILE, "skeleton `%s' is not a "
1586 class = pw_checkname(optarg, 0);
1590 errx(EX_USAGE, "'-h' and '-H' are mutually "
1591 "exclusive options");
1592 fd = pw_checkfd(optarg);
1595 errx(EX_USAGE, "-H expects a file descriptor");
1599 errx(EX_USAGE, "'-h' and '-H' are mutually "
1600 "exclusive options");
1601 fd = pw_checkfd(optarg);
1618 if (geteuid() != 0 && ! dryrun)
1619 errx(EX_NOPERM, "you must be root");
1622 freopen(_PATH_DEVNULL, "w", stderr);
1624 cnf = get_userconfig(cfg);
1626 if (id < 0 && name == NULL)
1627 errx(EX_DATAERR, "username or id required");
1629 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
1632 errx(EX_NOUSER, "no such uid `%ju'",
1634 errx(EX_NOUSER, "no such user `%s'", name);
1638 name = pwd->pw_name;
1640 if (nis && nispasswd == NULL)
1641 nispasswd = cnf->nispasswd;
1643 if (PWF._altdir == PWF_REGULAR &&
1644 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
1645 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
1646 if (!nis && nispasswd && *nispasswd != '/')
1647 errx(EX_NOUSER, "Cannot modify NIS user `%s'",
1650 errx(EX_NOUSER, "Cannot modify non local user `%s'",
1656 if (strcmp(pwd->pw_name, "root") == 0)
1657 errx(EX_DATAERR, "can't rename `root' account");
1658 if (strcmp(pwd->pw_name, newname) != 0) {
1659 pwd->pw_name = pw_checkname(newname, 0);
1664 if (id >= 0 && pwd->pw_uid != id) {
1667 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
1668 errx(EX_DATAERR, "can't change uid of `root' account");
1669 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1670 warnx("WARNING: account `%s' will have a uid of 0 "
1671 "(superuser access!)", pwd->pw_name);
1674 if (grname && pwd->pw_uid != 0) {
1675 grp = GETGRNAM(grname);
1677 grp = GETGRGID(pw_checkid(grname, GID_MAX));
1678 if (grp->gr_gid != pwd->pw_gid) {
1679 pwd->pw_gid = grp->gr_gid;
1684 if (password_days >= 0 && pwd->pw_change != password_days) {
1685 pwd->pw_change = password_days;
1689 if (expire_days >= 0 && pwd->pw_expire != expire_days) {
1690 pwd->pw_expire = expire_days;
1695 shell = shell_path(cnf->shelldir, cnf->shells, shell);
1698 if (strcmp(shell, pwd->pw_shell) != 0) {
1699 pwd->pw_shell = shell;
1704 if (class && strcmp(pwd->pw_class, class) != 0) {
1705 pwd->pw_class = class;
1709 if (homedir && strcmp(pwd->pw_dir, homedir) != 0) {
1710 pwd->pw_dir = homedir;
1712 if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) {
1714 warnx("WARNING: home `%s' does not exist",
1716 } else if (!S_ISDIR(st.st_mode)) {
1717 warnx("WARNING: home `%s' is not a directory",
1722 if (passwd && conf.fd == -1) {
1723 lc = login_getpwclass(pwd);
1724 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1725 warn("setting crypt(3) format");
1727 cnf->default_password = passwd_val(passwd,
1728 cnf->default_password);
1729 pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun);
1733 if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) {
1734 pwd->pw_gecos = gecos;
1739 edited = pw_set_passwd(pwd, fd, precrypted, true);
1742 return (print_user(pwd, pretty, false));
1744 if (edited) /* Only updated this if required */
1745 perform_chgpwent(name, pwd, nis ? nispasswd : NULL);
1746 /* Now perform the needed changes concern groups */
1747 if (groups != NULL) {
1748 /* Delete User from groups using old name */
1750 while ((grp = GETGRENT()) != NULL) {
1751 if (grp->gr_mem == NULL)
1753 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1754 if (strcmp(grp->gr_mem[i] , name) != 0)
1756 for (j = i; grp->gr_mem[j] != NULL ; j++)
1757 grp->gr_mem[j] = grp->gr_mem[j+1];
1758 chggrent(grp->gr_name, grp);
1763 /* Add the user to the needed groups */
1764 for (i = 0; i < groups->sl_cur; i++) {
1765 grp = GETGRNAM(groups->sl_str[i]);
1766 grp = gr_add(grp, pwd->pw_name);
1769 chggrent(grp->gr_name, grp);
1773 /* In case of rename we need to walk over the different groups */
1776 while ((grp = GETGRENT()) != NULL) {
1777 if (grp->gr_mem == NULL)
1779 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1780 if (strcmp(grp->gr_mem[i], name) != 0)
1782 grp->gr_mem[i] = newname;
1783 chggrent(grp->gr_name, grp);
1789 /* go get a current version of pwd */
1792 pwd = GETPWNAM(name);
1794 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1795 grp = GETGRGID(pwd->pw_gid);
1796 pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1797 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1798 grp ? grp->gr_name : "unknown",
1799 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1800 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1803 * Let's create and populate the user's home directory. Note
1804 * that this also `works' for editing users if -m is used, but
1805 * existing files will *not* be overwritten.
1807 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1808 *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
1812 homemode = cnf->homemode;
1813 create_and_populate_homedir(cnf, pwd, skel, homemode, true);
1816 if (nis && nis_update() == 0)
1817 pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated");
1819 return (EXIT_SUCCESS);