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
31 static const char rcsid[] =
35 #include <sys/param.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 P_NONE: /* No password at all! */
522 case P_RANDOM: /* Random password */
523 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
524 for (i = 0; i < l; i++)
525 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)];
529 * We give this information back to the user
531 if (conf.fd == -1 && !dryrun) {
532 if (isatty(STDOUT_FILENO))
533 printf("Password for '%s' is: ", user);
534 printf("%s\n", pwbuf);
538 case P_YES: /* user's name */
539 strlcpy(pwbuf, user, sizeof(pwbuf));
541 case P_NO: /* No login - default */
546 return pw_pwcrypt(pwbuf);
550 print_user(struct passwd * pwd, bool pretty, bool v7)
554 struct group *grp = GETGRGID(pwd->pw_gid);
555 char uname[60] = "User &", office[60] = "[None]",
556 wphone[60] = "[None]", hphone[60] = "[None]";
557 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
561 p = v7 ? pw_make_v7(pwd) : pw_make(pwd);
564 return (EXIT_SUCCESS);
567 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
568 strlcpy(uname, p, sizeof(uname));
569 if ((p = strtok(NULL, ",")) != NULL) {
570 strlcpy(office, p, sizeof(office));
571 if ((p = strtok(NULL, ",")) != NULL) {
572 strlcpy(wphone, p, sizeof(wphone));
573 if ((p = strtok(NULL, "")) != NULL) {
574 strlcpy(hphone, p, sizeof(hphone));
580 * Handle '&' in gecos field
582 if ((p = strchr(uname, '&')) != NULL) {
583 int l = strlen(pwd->pw_name);
586 memmove(p + l, p + 1, m);
587 memmove(p, pwd->pw_name, l);
588 *p = (char) toupper((unsigned char)*p);
590 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
591 strftime(acexpire, sizeof acexpire, "%c", tptr);
592 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
593 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
594 printf("Login Name: %-15s #%-12ju Group: %-15s #%ju\n"
596 " Home: %-26.26s Class: %s\n"
597 " Shell: %-26.26s Office: %s\n"
598 "Work Phone: %-26.26s Home Phone: %s\n"
599 "Acc Expire: %-26.26s Pwd Expire: %s\n",
600 pwd->pw_name, (uintmax_t)pwd->pw_uid,
601 grp ? grp->gr_name : "(invalid)", (uintmax_t)pwd->pw_gid,
602 uname, pwd->pw_dir, pwd->pw_class,
603 pwd->pw_shell, office, wphone, hphone,
607 while ((grp=GETGRENT()) != NULL) {
609 if (grp->gr_mem != NULL) {
610 while (grp->gr_mem[i] != NULL) {
611 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) {
612 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
620 printf("%s", j ? "\n" : "");
621 return (EXIT_SUCCESS);
625 pw_checkname(char *name, int gecos)
628 const char *badchars, *ch, *showtype;
634 /* See if the name is valid as a gecos (comment) field. */
636 showtype = "gecos field";
638 /* See if the name is valid as a userid or group. */
639 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
640 showtype = "userid/group name";
641 /* Userids and groups can not have a leading '-'. */
647 if (strchr(badchars, *ch) != NULL ||
648 (!gecos && *ch < ' ') ||
653 /* 8-bit characters are only allowed in GECOS fields */
654 if (!gecos && (*ch & 0x80)) {
662 * A `$' is allowed as the final character for userids and groups,
663 * mainly for the benefit of samba.
665 if (reject && !gecos) {
666 if (*ch == '$' && *(ch + 1) == '\0') {
672 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
673 ? "`%c'" : "0x%02x", *ch);
674 errx(EX_DATAERR, "invalid character %s at position %td in %s",
675 showch, (ch - name), showtype);
677 if (!gecos && (ch - name) > LOGNAMESIZE)
678 errx(EX_USAGE, "name too long `%s' (max is %d)", name,
687 DIR *d = opendir("/var/at/jobs");
692 while ((e = readdir(d)) != NULL) {
695 if (strncmp(e->d_name, ".lock", 5) != 0 &&
696 stat(e->d_name, &st) == 0 &&
697 !S_ISDIR(st.st_mode) &&
699 char tmp[MAXPATHLEN];
701 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s",
711 rmopie(char const * name)
719 if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1)
722 fp = fdopen(fd, "r+");
725 while (fgets(tmp, sizeof(tmp), fp) != NULL) {
726 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') {
727 /* Comment username out */
728 if (fseek(fp, atofs, SEEK_SET) == 0)
729 fwrite("#", 1, 1, fp);
735 * If we got an error of any sort, don't update!
741 pw_user_next(int argc, char **argv, char *name __unused)
743 struct userconf *cnf = NULL;
744 const char *cfg = NULL;
749 while ((ch = getopt(argc, argv, "C:q")) != -1) {
761 freopen(_PATH_DEVNULL, "w", stderr);
763 cnf = get_userconfig(cfg);
765 next = pw_uidpolicy(cnf, -1);
767 printf("%ju:", (uintmax_t)next);
768 pw_groupnext(cnf, quiet);
770 return (EXIT_SUCCESS);
774 pw_user_show(int argc, char **argv, char *arg1)
776 struct passwd *pwd = NULL;
787 if (arg1[strspn(arg1, "0123456789")] == '\0')
788 id = pw_checkid(arg1, UID_MAX);
793 while ((ch = getopt(argc, argv, "C:qn:u:FPa7")) != -1) {
796 /* ignore compatibility */
805 id = pw_checkid(optarg, UID_MAX);
823 freopen(_PATH_DEVNULL, "w", stderr);
827 while ((pwd = GETPWENT()) != NULL)
828 print_user(pwd, pretty, v7);
830 return (EXIT_SUCCESS);
833 if (id < 0 && name == NULL)
834 errx(EX_DATAERR, "username or id required");
836 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
842 errx(EX_NOUSER, "no such uid `%ju'",
844 errx(EX_NOUSER, "no such user `%s'", name);
848 return (print_user(pwd, pretty, v7));
852 pw_user_del(int argc, char **argv, char *arg1)
854 struct userconf *cnf = NULL;
855 struct passwd *pwd = NULL;
856 struct group *gr, *grp;
858 char grname[MAXLOGNAME];
859 char *nispasswd = NULL;
860 char file[MAXPATHLEN];
861 char home[MAXPATHLEN];
862 const char *cfg = NULL;
867 bool deletehome = false;
871 if (arg1[strspn(arg1, "0123456789")] == '\0')
872 id = pw_checkid(arg1, UID_MAX);
877 while ((ch = getopt(argc, argv, "C:qn:u:rYy:")) != -1) {
889 id = pw_checkid(optarg, UID_MAX);
904 freopen(_PATH_DEVNULL, "w", stderr);
906 if (id < 0 && name == NULL)
907 errx(EX_DATAERR, "username or id required");
909 cnf = get_userconfig(cfg);
911 if (nispasswd == NULL)
912 nispasswd = cnf->nispasswd;
914 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
917 errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id);
918 errx(EX_NOUSER, "no such user `%s'", name);
921 if (PWF._altdir == PWF_REGULAR &&
922 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
923 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
924 if (!nis && nispasswd && *nispasswd != '/')
925 errx(EX_NOUSER, "Cannot remove NIS user `%s'",
928 errx(EX_NOUSER, "Cannot remove non local user `%s'",
937 if (strcmp(pwd->pw_name, "root") == 0)
938 errx(EX_DATAERR, "cannot remove user 'root'");
940 /* Remove opie record from /etc/opiekeys */
941 if (PWALTDIR() != PWF_ALT)
942 rmopie(pwd->pw_name);
945 /* Remove crontabs */
946 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name);
947 if (access(file, F_OK) == 0) {
948 snprintf(file, sizeof(file), "crontab -u %s -r",
955 * Save these for later, since contents of pwd may be
956 * invalidated by deletion
958 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name);
959 strlcpy(home, pwd->pw_dir, sizeof(home));
960 gr = GETGRGID(pwd->pw_gid);
962 strlcpy(grname, gr->gr_name, LOGNAMESIZE);
968 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
970 err(EX_IOERR, "passwd update");
972 if (nis && nispasswd && *nispasswd=='/') {
973 rc = delnispwent(nispasswd, name);
975 warnx("WARNING: user '%s' does not exist in NIS passwd",
978 warn("WARNING: NIS passwd update");
981 grp = GETGRNAM(name);
983 (grp->gr_mem == NULL || *grp->gr_mem == NULL) &&
984 strcmp(name, grname) == 0)
985 delgrent(GETGRNAM(name));
987 while ((grp = GETGRENT()) != NULL) {
989 char group[MAXLOGNAME];
990 if (grp->gr_mem == NULL)
993 for (i = 0; grp->gr_mem[i] != NULL; i++) {
994 if (strcmp(grp->gr_mem[i], name) != 0)
997 for (j = i; grp->gr_mem[j] != NULL; j++)
998 grp->gr_mem[j] = grp->gr_mem[j+1];
999 strlcpy(group, grp->gr_name, MAXLOGNAME);
1000 chggrent(group, grp);
1005 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) account removed", name,
1008 /* Remove mail file */
1009 if (PWALTDIR() != PWF_ALT)
1010 unlinkat(conf.rootfd, file + 1, 0);
1012 /* Remove at jobs */
1013 if (!PWALTDIR() && getpwuid(id) == NULL)
1016 /* Remove home directory and contents */
1017 if (PWALTDIR() != PWF_ALT && deletehome && *home == '/' &&
1018 GETPWUID(id) == NULL &&
1019 fstatat(conf.rootfd, home + 1, &st, 0) != -1) {
1020 rm_r(conf.rootfd, home, id);
1021 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) home '%s' %s"
1022 "removed", name, (uintmax_t)id, home,
1023 fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not "
1027 return (EXIT_SUCCESS);
1031 pw_user_lock(int argc, char **argv, char *arg1)
1035 while ((ch = getopt(argc, argv, "Cq")) != -1) {
1044 return (pw_userlock(arg1, M_LOCK));
1048 pw_user_unlock(int argc, char **argv, char *arg1)
1052 while ((ch = getopt(argc, argv, "Cq")) != -1) {
1061 return (pw_userlock(arg1, M_UNLOCK));
1064 static struct group *
1065 group_from_name_or_id(char *name)
1067 const char *errstr = NULL;
1071 if ((grp = GETGRNAM(name)) == NULL) {
1072 id = strtounum(name, 0, GID_MAX, &errstr);
1074 errx(EX_NOUSER, "group `%s' does not exist", name);
1077 errx(EX_NOUSER, "group `%s' does not exist", name);
1084 split_groups(StringList **groups, char *groupsstr)
1088 char tok[] = ", \t";
1090 if (*groups == NULL)
1091 *groups = sl_init();
1092 for (p = strtok(groupsstr, tok); p != NULL; p = strtok(NULL, tok)) {
1093 grp = group_from_name_or_id(p);
1094 sl_add(*groups, newstr(grp->gr_name));
1099 validate_grname(struct userconf *cnf, char *group)
1103 if (group == NULL || *group == '\0') {
1104 cnf->default_group = "";
1107 grp = group_from_name_or_id(group);
1108 cnf->default_group = newstr(grp->gr_name);
1112 validate_mode(char *mode)
1117 if ((set = setmode(mode)) == NULL)
1118 errx(EX_DATAERR, "invalid directory creation mode '%s'", mode);
1120 m = getmode(set, _DEF_DIRMODE);
1126 validate_expire(char *str, int opt)
1129 errx(EX_DATAERR, "-%c argument must be numeric "
1130 "when setting defaults: %s", (char)opt, str);
1131 return strtol(str, NULL, 0);
1135 mix_config(struct userconf *cmdcnf, struct userconf *cfg)
1138 if (cmdcnf->default_password < 0)
1139 cmdcnf->default_password = cfg->default_password;
1140 if (cmdcnf->reuse_uids == 0)
1141 cmdcnf->reuse_uids = cfg->reuse_uids;
1142 if (cmdcnf->reuse_gids == 0)
1143 cmdcnf->reuse_gids = cfg->reuse_gids;
1144 if (cmdcnf->nispasswd == NULL)
1145 cmdcnf->nispasswd = cfg->nispasswd;
1146 if (cmdcnf->dotdir == NULL)
1147 cmdcnf->dotdir = cfg->dotdir;
1148 if (cmdcnf->newmail == NULL)
1149 cmdcnf->newmail = cfg->newmail;
1150 if (cmdcnf->logfile == NULL)
1151 cmdcnf->logfile = cfg->logfile;
1152 if (cmdcnf->home == NULL)
1153 cmdcnf->home = cfg->home;
1154 if (cmdcnf->homemode == 0)
1155 cmdcnf->homemode = cfg->homemode;
1156 if (cmdcnf->shelldir == NULL)
1157 cmdcnf->shelldir = cfg->shelldir;
1158 if (cmdcnf->shells == NULL)
1159 cmdcnf->shells = cfg->shells;
1160 if (cmdcnf->shell_default == NULL)
1161 cmdcnf->shell_default = cfg->shell_default;
1162 if (cmdcnf->default_group == NULL)
1163 cmdcnf->default_group = cfg->default_group;
1164 if (cmdcnf->groups == NULL)
1165 cmdcnf->groups = cfg->groups;
1166 if (cmdcnf->default_class == NULL)
1167 cmdcnf->default_class = cfg->default_class;
1168 if (cmdcnf->min_uid == 0)
1169 cmdcnf->min_uid = cfg->min_uid;
1170 if (cmdcnf->max_uid == 0)
1171 cmdcnf->max_uid = cfg->max_uid;
1172 if (cmdcnf->min_gid == 0)
1173 cmdcnf->min_gid = cfg->min_gid;
1174 if (cmdcnf->max_gid == 0)
1175 cmdcnf->max_gid = cfg->max_gid;
1176 if (cmdcnf->expire_days < 0)
1177 cmdcnf->expire_days = cfg->expire_days;
1178 if (cmdcnf->password_days < 0)
1179 cmdcnf->password_days = cfg->password_days;
1183 pw_user_add(int argc, char **argv, char *arg1)
1185 struct userconf *cnf, *cmdcnf;
1189 char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y";
1190 char line[_PASSWORD_LEN+1], path[MAXPATHLEN];
1191 char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname;
1192 char *default_passwd, *name, *p;
1193 const char *cfg = NULL;
1198 int rc, ch, fd = -1;
1200 bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf;
1202 dryrun = nis = pretty = quiet = createhome = precrypted = false;
1204 gecos = homedir = skel = userid = groupid = default_passwd = NULL;
1205 grname = name = NULL;
1207 if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL)
1208 err(EXIT_FAILURE, "calloc()");
1210 cmdcnf->default_password = cmdcnf->expire_days = cmdcnf->password_days = -1;
1214 if (arg1[strspn(arg1, "0123456789")] == '\0')
1215 id = pw_checkid(arg1, UID_MAX);
1217 name = pw_checkname(arg1, 0);
1220 while ((ch = getopt(argc, argv, args)) != -1) {
1229 name = pw_checkname(optarg, 0);
1235 gecos = pw_checkname(optarg, 1);
1242 cmdcnf->expire_days = validate_expire(optarg, ch);
1244 cmdcnf->expire_days = parse_date(now, optarg);
1248 cmdcnf->password_days = validate_expire(optarg, ch);
1250 cmdcnf->password_days = parse_date(now, optarg);
1253 validate_grname(cmdcnf, optarg);
1257 split_groups(&cmdcnf->groups, optarg);
1263 cmdcnf->homemode = validate_mode(optarg);
1266 walk = skel = optarg;
1269 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1270 errx(EX_OSFILE, "skeleton `%s' does not "
1272 if (!S_ISDIR(st.st_mode))
1273 errx(EX_OSFILE, "skeleton `%s' is not a "
1275 cmdcnf->dotdir = skel;
1278 cmdcnf->shell_default = optarg;
1281 conf.checkduplicate = false;
1284 cmdcnf->default_class = pw_checkname(optarg, 0);
1290 default_passwd = optarg;
1294 errx(EX_USAGE, "'-h' and '-H' are mutually "
1295 "exclusive options");
1296 fd = pw_checkfd(optarg);
1299 errx(EX_USAGE, "-H expects a file descriptor");
1303 errx(EX_USAGE, "'-h' and '-H' are mutually "
1304 "exclusive options");
1305 fd = pw_checkfd(optarg);
1311 cmdcnf->home = optarg;
1320 cmdcnf->nispasswd = optarg;
1328 if (geteuid() != 0 && ! dryrun)
1329 errx(EX_NOPERM, "you must be root");
1332 freopen(_PATH_DEVNULL, "w", stderr);
1334 cnf = get_userconfig(cfg);
1336 mix_config(cmdcnf, cnf);
1338 cmdcnf->default_password = passwd_val(default_passwd,
1339 cnf->default_password);
1342 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
1343 if (userid != NULL) {
1344 if ((p = strtok(userid, ", \t")) != NULL)
1345 cmdcnf->min_uid = pw_checkid(p, UID_MAX);
1346 if (cmdcnf->min_uid == 0)
1347 cmdcnf->min_uid = 1000;
1348 if ((p = strtok(NULL, " ,\t")) != NULL)
1349 cmdcnf->max_uid = pw_checkid(p, UID_MAX);
1350 if (cmdcnf->max_uid == 0)
1351 cmdcnf->max_uid = 32000;
1353 if (groupid != NULL) {
1354 if ((p = strtok(groupid, ", \t")) != NULL)
1355 cmdcnf->min_gid = pw_checkid(p, GID_MAX);
1356 if (cmdcnf->min_gid == 0)
1357 cmdcnf->min_gid = 1000;
1358 if ((p = strtok(NULL, " ,\t")) != NULL)
1359 cmdcnf->max_gid = pw_checkid(p, GID_MAX);
1360 if (cmdcnf->max_gid == 0)
1361 cmdcnf->max_gid = 32000;
1363 if (write_userconfig(cmdcnf, cfg))
1364 return (EXIT_SUCCESS);
1365 err(EX_IOERR, "config update");
1369 id = pw_checkid(userid, UID_MAX);
1370 if (id < 0 && name == NULL)
1371 errx(EX_DATAERR, "user name or id required");
1374 errx(EX_DATAERR, "login name required");
1376 if (GETPWNAM(name) != NULL)
1377 errx(EX_DATAERR, "login name `%s' already exists", name);
1380 grname = cmdcnf->default_group;
1383 pwd->pw_name = name;
1384 pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : "";
1385 pwd->pw_uid = pw_uidpolicy(cmdcnf, id);
1386 pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name,
1387 (gid_t) pwd->pw_uid, dryrun);
1389 if (cmdcnf->password_days > 0)
1390 pwd->pw_change = now + cmdcnf->password_days * 86400L;
1391 if (cmdcnf->expire_days > 0)
1392 pwd->pw_expire = now + cmdcnf->expire_days * 86400L;
1394 pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name);
1395 pwd->pw_shell = pw_shellpolicy(cmdcnf);
1396 lc = login_getpwclass(pwd);
1397 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1398 warn("setting crypt(3) format");
1400 pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun);
1401 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1402 warnx("WARNING: new account `%s' has a uid of 0 "
1403 "(superuser access!)", pwd->pw_name);
1405 pwd->pw_gecos = gecos;
1408 pw_set_passwd(pwd, fd, precrypted, false);
1411 return (print_user(pwd, pretty, false));
1413 if ((rc = addpwent(pwd)) != 0) {
1415 errx(EX_IOERR, "user '%s' already exists",
1418 err(EX_IOERR, "passwd file update");
1420 if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') {
1421 printf("%s\n", cmdcnf->nispasswd);
1422 rc = addnispwent(cmdcnf->nispasswd, pwd);
1424 warnx("User '%s' already exists in NIS passwd",
1427 warn("NIS passwd update");
1428 /* NOTE: we treat NIS-only update errors as non-fatal */
1431 if (cmdcnf->groups != NULL) {
1432 for (i = 0; i < cmdcnf->groups->sl_cur; i++) {
1433 grp = GETGRNAM(cmdcnf->groups->sl_str[i]);
1434 grp = gr_add(grp, pwd->pw_name);
1436 * grp can only be NULL in 2 cases:
1437 * - the new member is already a member
1438 * - a problem with memory occurs
1439 * in both cases we want to skip now.
1443 chggrent(grp->gr_name, grp);
1448 pwd = GETPWNAM(name);
1450 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1452 grp = GETGRGID(pwd->pw_gid);
1453 pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1454 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1455 grp ? grp->gr_name : "unknown",
1456 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1457 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1460 * let's touch and chown the user's mail file. This is not
1461 * strictly necessary under BSD with a 0755 maildir but it also
1462 * doesn't hurt anything to create the empty mailfile
1464 if (PWALTDIR() != PWF_ALT) {
1465 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR,
1467 /* Preserve contents & mtime */
1468 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600));
1469 fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid,
1470 AT_SYMLINK_NOFOLLOW);
1474 * Let's create and populate the user's home directory. Note
1475 * that this also `works' for editing users if -m is used, but
1476 * existing files will *not* be overwritten.
1478 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1479 *pwd->pw_dir == '/' && pwd->pw_dir[1])
1480 create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir,
1481 cmdcnf->homemode, false);
1483 if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail &&
1484 (fp = fopen(cnf->newmail, "r")) != NULL) {
1485 if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL)
1488 fprintf(pfp, "From: root\n" "To: %s\n"
1489 "Subject: Welcome!\n\n", pwd->pw_name);
1490 while (fgets(line, sizeof(line), fp) != NULL) {
1491 /* Do substitutions? */
1495 pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent",
1496 pwd->pw_name, (uintmax_t)pwd->pw_uid);
1501 if (nis && nis_update() == 0)
1502 pw_log(cnf, M_ADD, W_USER, "NIS maps updated");
1504 return (EXIT_SUCCESS);
1508 pw_user_mod(int argc, char **argv, char *arg1)
1510 struct userconf *cnf;
1513 StringList *groups = NULL;
1514 char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:";
1515 const char *cfg = NULL;
1516 char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell;
1517 char *passwd, *class, *nispasswd;
1523 bool quiet, createhome, pretty, dryrun, nis, edited;
1525 mode_t homemode = 0;
1526 time_t expire_days, password_days, now;
1528 expire_days = password_days = -1;
1529 gecos = homedir = grname = name = newname = skel = shell =NULL;
1531 class = nispasswd = NULL;
1532 quiet = createhome = pretty = dryrun = nis = precrypted = false;
1537 if (arg1[strspn(arg1, "0123456789")] == '\0')
1538 id = pw_checkid(arg1, UID_MAX);
1543 while ((ch = getopt(argc, argv, args)) != -1) {
1555 id = pw_checkid(optarg, UID_MAX);
1558 gecos = pw_checkname(optarg, 1);
1564 expire_days = parse_date(now, optarg);
1567 password_days = parse_date(now, optarg);
1570 group_from_name_or_id(optarg);
1574 split_groups(&groups, optarg);
1580 homemode = validate_mode(optarg);
1586 walk = skel = optarg;
1589 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1590 errx(EX_OSFILE, "skeleton `%s' does not "
1592 if (!S_ISDIR(st.st_mode))
1593 errx(EX_OSFILE, "skeleton `%s' is not a "
1603 class = pw_checkname(optarg, 0);
1607 errx(EX_USAGE, "'-h' and '-H' are mutually "
1608 "exclusive options");
1609 fd = pw_checkfd(optarg);
1612 errx(EX_USAGE, "-H expects a file descriptor");
1616 errx(EX_USAGE, "'-h' and '-H' are mutually "
1617 "exclusive options");
1618 fd = pw_checkfd(optarg);
1635 if (geteuid() != 0 && ! dryrun)
1636 errx(EX_NOPERM, "you must be root");
1639 freopen(_PATH_DEVNULL, "w", stderr);
1641 cnf = get_userconfig(cfg);
1643 if (id < 0 && name == NULL)
1644 errx(EX_DATAERR, "username or id required");
1646 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
1649 errx(EX_NOUSER, "no such uid `%ju'",
1651 errx(EX_NOUSER, "no such user `%s'", name);
1655 name = pwd->pw_name;
1657 if (nis && nispasswd == NULL)
1658 nispasswd = cnf->nispasswd;
1660 if (PWF._altdir == PWF_REGULAR &&
1661 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
1662 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
1663 if (!nis && nispasswd && *nispasswd != '/')
1664 errx(EX_NOUSER, "Cannot modify NIS user `%s'",
1667 errx(EX_NOUSER, "Cannot modify non local user `%s'",
1673 if (strcmp(pwd->pw_name, "root") == 0)
1674 errx(EX_DATAERR, "can't rename `root' account");
1675 if (strcmp(pwd->pw_name, newname) != 0) {
1676 pwd->pw_name = pw_checkname(newname, 0);
1681 if (id >= 0 && pwd->pw_uid != id) {
1684 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
1685 errx(EX_DATAERR, "can't change uid of `root' account");
1686 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1687 warnx("WARNING: account `%s' will have a uid of 0 "
1688 "(superuser access!)", pwd->pw_name);
1691 if (grname && pwd->pw_uid != 0) {
1692 grp = GETGRNAM(grname);
1694 grp = GETGRGID(pw_checkid(grname, GID_MAX));
1695 if (grp->gr_gid != pwd->pw_gid) {
1696 pwd->pw_gid = grp->gr_gid;
1702 if (password_days >= 0) {
1703 pwd->pw_change = now + password_days * 86400L;
1707 if (expire_days >= 0) {
1708 pwd->pw_expire = now + expire_days * 86400L;
1713 shell = shell_path(cnf->shelldir, cnf->shells, shell);
1716 if (strcmp(shell, pwd->pw_shell) != 0) {
1717 pwd->pw_shell = shell;
1722 if (class && strcmp(pwd->pw_class, class) != 0) {
1723 pwd->pw_class = class;
1727 if (homedir && strcmp(pwd->pw_dir, homedir) != 0) {
1728 pwd->pw_dir = homedir;
1730 if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) {
1732 warnx("WARNING: home `%s' does not exist",
1734 } else if (!S_ISDIR(st.st_mode)) {
1735 warnx("WARNING: home `%s' is not a directory",
1740 if (passwd && conf.fd == -1) {
1741 lc = login_getpwclass(pwd);
1742 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1743 warn("setting crypt(3) format");
1745 cnf->default_password = passwd_val(passwd,
1746 cnf->default_password);
1747 pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun);
1751 if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) {
1752 pwd->pw_gecos = gecos;
1757 edited = pw_set_passwd(pwd, fd, precrypted, true);
1760 return (print_user(pwd, pretty, false));
1762 if (edited) /* Only updated this if required */
1763 perform_chgpwent(name, pwd, nis ? nispasswd : NULL);
1764 /* Now perform the needed changes concern groups */
1765 if (groups != NULL) {
1766 /* Delete User from groups using old name */
1768 while ((grp = GETGRENT()) != NULL) {
1769 if (grp->gr_mem == NULL)
1771 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1772 if (strcmp(grp->gr_mem[i] , name) != 0)
1774 for (j = i; grp->gr_mem[j] != NULL ; j++)
1775 grp->gr_mem[j] = grp->gr_mem[j+1];
1776 chggrent(grp->gr_name, grp);
1781 /* Add the user to the needed groups */
1782 for (i = 0; i < groups->sl_cur; i++) {
1783 grp = GETGRNAM(groups->sl_str[i]);
1784 grp = gr_add(grp, pwd->pw_name);
1787 chggrent(grp->gr_name, grp);
1791 /* In case of rename we need to walk over the different groups */
1794 while ((grp = GETGRENT()) != NULL) {
1795 if (grp->gr_mem == NULL)
1797 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1798 if (strcmp(grp->gr_mem[i], name) != 0)
1800 grp->gr_mem[i] = newname;
1801 chggrent(grp->gr_name, grp);
1807 /* go get a current version of pwd */
1810 pwd = GETPWNAM(name);
1812 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1813 grp = GETGRGID(pwd->pw_gid);
1814 pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1815 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1816 grp ? grp->gr_name : "unknown",
1817 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1818 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1821 * Let's create and populate the user's home directory. Note
1822 * that this also `works' for editing users if -m is used, but
1823 * existing files will *not* be overwritten.
1825 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1826 *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
1830 homemode = cnf->homemode;
1831 create_and_populate_homedir(cnf, pwd, skel, homemode, true);
1834 if (nis && nis_update() == 0)
1835 pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated");
1837 return (EXIT_SUCCESS);