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[] =
36 #include <sys/param.h>
40 #include <sys/types.h>
42 #include <sys/resource.h>
44 #include <login_cap.h>
48 #define LOGNAMESIZE (MAXLOGNAME-1)
50 static char locked_str[] = "*LOCKED*";
52 static int print_user(struct passwd * pwd, int pretty, int v7);
53 static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
54 static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
55 static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
56 static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
57 static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user);
58 static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell);
59 static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user);
60 static char *shell_path(char const * path, char *shells[], char *sh);
61 static void rmat(uid_t uid);
62 static void rmopie(char const * name);
65 * -C config configuration file
69 * -c comment user name/comment
70 * -d directory home directory
71 * -e date account expiry date
72 * -p date password expiry date
73 * -g grp primary group
74 * -G grp1,grp2 additional groups
75 * -m [ -k dir ] create and set up home
76 * -s shell name of login shell
79 * -l name new login name
80 * -h fd password filehandle
81 * -H fd encrypted password filehandle
82 * -F force print or add
84 * -D set user defaults
85 * -b dir default home root dir
86 * -e period default expiry period
87 * -p period default password change period
88 * -g group default group
89 * -G grp1,grp2.. default additional groups
90 * -L class default login class
91 * -k dir default home skeleton
92 * -s shell default shell
93 * -w method default password method
97 pw_user(struct userconf * cnf, int mode, struct cargs * args)
105 struct passwd *pwd = NULL;
108 char line[_PASSWORD_LEN+1];
113 static struct passwd fakeuser =
125 #if defined(__FreeBSD__)
132 * With M_NEXT, we only need to return the
137 uid_t next = pw_uidpolicy(cnf, args);
138 if (getarg(args, 'q'))
140 printf("%ld:", (long)next);
141 pw_group(cnf, mode, args);
146 * We can do all of the common legwork here
149 if ((arg = getarg(args, 'b')) != NULL) {
150 cnf->home = arg->val;
153 if ((arg = getarg(args, 'M')) != NULL) {
155 if ((set = setmode(dmode_c)) == NULL)
156 errx(EX_DATAERR, "invalid directory creation mode '%s'",
158 cnf->homemode = getmode(set, _DEF_DIRMODE);
163 * If we'll need to use it or we're updating it,
164 * then create the base home directory if necessary
166 if (arg != NULL || getarg(args, 'm') != NULL) {
167 int l = strlen(cnf->home);
169 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */
170 cnf->home[--l] = '\0';
172 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */
173 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home);
175 if (stat(cnf->home, &st) == -1) {
176 char dbuf[MAXPATHLEN];
179 * This is a kludge especially for Joerg :)
180 * If the home directory would be created in the root partition, then
181 * we really create it under /usr which is likely to have more space.
182 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
184 if (strchr(cnf->home+1, '/') == NULL) {
185 strcpy(dbuf, "/usr");
186 strncat(dbuf, cnf->home, MAXPATHLEN-5);
187 if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) {
190 * Skip first "/" and create symlink:
193 symlink(dbuf+1, cnf->home);
195 /* If this falls, fall back to old method */
197 strlcpy(dbuf, cnf->home, sizeof(dbuf));
199 if (stat(dbuf, &st) == -1) {
200 while ((p = strchr(++p, '/')) != NULL) {
202 if (stat(dbuf, &st) == -1) {
203 if (mkdir(dbuf, _DEF_DIRMODE) == -1)
206 } else if (!S_ISDIR(st.st_mode))
207 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf);
211 if (stat(dbuf, &st) == -1) {
212 if (mkdir(dbuf, _DEF_DIRMODE) == -1) {
213 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf);
217 } else if (!S_ISDIR(st.st_mode))
218 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home);
221 if ((arg = getarg(args, 'e')) != NULL)
222 cnf->expire_days = atoi(arg->val);
224 if ((arg = getarg(args, 'y')) != NULL)
225 cnf->nispasswd = arg->val;
227 if ((arg = getarg(args, 'p')) != NULL && arg->val)
228 cnf->password_days = atoi(arg->val);
230 if ((arg = getarg(args, 'g')) != NULL) {
231 if (!*(p = arg->val)) /* Handle empty group list specially */
232 cnf->default_group = "";
234 if ((grp = GETGRNAM(p)) == NULL) {
235 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
236 errx(EX_NOUSER, "group `%s' does not exist", p);
238 cnf->default_group = newstr(grp->gr_name);
241 if ((arg = getarg(args, 'L')) != NULL)
242 cnf->default_class = pw_checkname((u_char *)arg->val, 0);
244 if ((arg = getarg(args, 'G')) != NULL && arg->val) {
247 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
248 if ((grp = GETGRNAM(p)) == NULL) {
249 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
250 errx(EX_NOUSER, "group `%s' does not exist", p);
252 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1)
253 cnf->groups[i++] = newstr(grp->gr_name);
255 while (i < cnf->numgroups)
256 cnf->groups[i++] = NULL;
259 if ((arg = getarg(args, 'k')) != NULL) {
260 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode))
261 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir);
264 if ((arg = getarg(args, 's')) != NULL)
265 cnf->shell_default = arg->val;
267 if ((arg = getarg(args, 'w')) != NULL)
268 cnf->default_password = boolean_val(arg->val, cnf->default_password);
269 if (mode == M_ADD && getarg(args, 'D')) {
270 if (getarg(args, 'n') != NULL)
271 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
272 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
273 if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
275 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
276 cnf->max_uid = 32000;
278 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
279 if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
281 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
282 cnf->max_gid = 32000;
285 arg = getarg(args, 'C');
286 if (write_userconfig(arg ? arg->val : NULL))
288 warn("config update");
292 if (mode == M_PRINT && getarg(args, 'a')) {
293 int pretty = getarg(args, 'P') != NULL;
294 int v7 = getarg(args, '7') != NULL;
297 while ((pwd = GETPWENT()) != NULL)
298 print_user(pwd, pretty, v7);
303 if ((a_name = getarg(args, 'n')) != NULL)
304 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0));
305 a_uid = getarg(args, 'u');
309 errx(EX_DATAERR, "user name or id required");
312 * Determine whether 'n' switch is name or uid - we don't
313 * really don't really care which we have, but we need to
316 if (mode != M_ADD && pwd == NULL
317 && strspn(a_name->val, "0123456789") == strlen(a_name->val)
318 && atoi(a_name->val) > 0) { /* Assume uid */
319 (a_uid = a_name)->ch = 'u';
325 * Update, delete & print require that the user exists
327 if (mode == M_UPDATE || mode == M_DELETE ||
328 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) {
330 if (a_name == NULL && pwd == NULL) /* Try harder */
331 pwd = GETPWUID(atoi(a_uid->val));
334 if (mode == M_PRINT && getarg(args, 'F')) {
335 fakeuser.pw_name = a_name ? a_name->val : "nouser";
336 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
337 return print_user(&fakeuser,
338 getarg(args, 'P') != NULL,
339 getarg(args, '7') != NULL);
342 errx(EX_NOUSER, "no such uid `%s'", a_uid->val);
343 errx(EX_NOUSER, "no such user `%s'", a_name->val);
346 if (a_name == NULL) /* May be needed later */
347 a_name = addarg(args, 'n', newstr(pwd->pw_name));
350 * The M_LOCK and M_UNLOCK functions simply add or remove
351 * a "*LOCKED*" prefix from in front of the password to
352 * prevent it decoding correctly, and therefore prevents
353 * access. Of course, this only prevents access via
354 * password authentication (not ssh, kerberos or any
355 * other method that does not use the UNIX password) but
356 * that is a known limitation.
359 if (mode == M_LOCK) {
360 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0)
361 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
362 passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str));
363 if (passtmp == NULL) /* disaster */
364 errx(EX_UNAVAILABLE, "out of memory");
365 strcpy(passtmp, locked_str);
366 strcat(passtmp, pwd->pw_passwd);
367 pwd->pw_passwd = passtmp;
369 } else if (mode == M_UNLOCK) {
370 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0)
371 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
372 pwd->pw_passwd += sizeof(locked_str)-1;
374 } else if (mode == M_DELETE) {
376 * Handle deletions now
378 char file[MAXPATHLEN];
379 char home[MAXPATHLEN];
380 uid_t uid = pwd->pw_uid;
382 if (strcmp(pwd->pw_name, "root") == 0)
383 errx(EX_DATAERR, "cannot remove user 'root'");
387 * Remove opie record from /etc/opiekeys
390 rmopie(pwd->pw_name);
395 sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
396 if (access(file, F_OK) == 0) {
397 sprintf(file, "crontab -u %s -r", pwd->pw_name);
402 * Save these for later, since contents of pwd may be
403 * invalidated by deletion
405 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
406 strlcpy(home, pwd->pw_dir, sizeof(home));
410 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
412 warn("passwd update");
416 if (cnf->nispasswd && *cnf->nispasswd=='/') {
417 rc = delnispwent(cnf->nispasswd, a_name->val);
419 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name);
421 warn("WARNING: NIS passwd update");
425 editgroups(a_name->val, NULL);
427 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
438 if (getpwuid(uid) == NULL)
442 * Remove home directory and contents
444 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
445 if (stat(home, &st) != -1) {
447 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
448 a_name->val, (long) uid, home,
449 stat(home, &st) == -1 ? "" : "not completely ");
454 } else if (mode == M_PRINT)
455 return print_user(pwd,
456 getarg(args, 'P') != NULL,
457 getarg(args, '7') != NULL);
460 * The rest is edit code
462 if ((arg = getarg(args, 'l')) != NULL) {
463 if (strcmp(pwd->pw_name, "root") == 0)
464 errx(EX_DATAERR, "can't rename `root' account");
465 pwd->pw_name = pw_checkname((u_char *)arg->val, 0);
469 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) {
470 pwd->pw_uid = (uid_t) atol(arg->val);
472 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
473 errx(EX_DATAERR, "can't change uid of `root' account");
474 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
475 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name);
478 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */
479 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid;
480 if (newgid != pwd->pw_gid) {
482 pwd->pw_gid = newgid;
486 if ((arg = getarg(args, 'p')) != NULL) {
487 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
488 if (pwd->pw_change != 0) {
494 time_t now = time(NULL);
495 time_t expire = parse_date(now, arg->val);
498 errx(EX_DATAERR, "invalid password change date `%s'", arg->val);
499 if (pwd->pw_change != expire) {
500 pwd->pw_change = expire;
506 if ((arg = getarg(args, 'e')) != NULL) {
507 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
508 if (pwd->pw_expire != 0) {
514 time_t now = time(NULL);
515 time_t expire = parse_date(now, arg->val);
518 errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val);
519 if (pwd->pw_expire != expire) {
520 pwd->pw_expire = expire;
526 if ((arg = getarg(args, 's')) != NULL) {
527 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
530 if (strcmp(shell, pwd->pw_shell) != 0) {
531 pwd->pw_shell = shell;
536 if (getarg(args, 'L')) {
537 if (cnf->default_class == NULL)
538 cnf->default_class = "";
539 if (strcmp(pwd->pw_class, cnf->default_class) != 0) {
540 pwd->pw_class = cnf->default_class;
545 if ((arg = getarg(args, 'd')) != NULL) {
546 if (strcmp(pwd->pw_dir, arg->val))
548 if (stat(pwd->pw_dir = arg->val, &st) == -1) {
549 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0)
550 warnx("WARNING: home `%s' does not exist", pwd->pw_dir);
551 } else if (!S_ISDIR(st.st_mode))
552 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir);
555 if ((arg = getarg(args, 'w')) != NULL &&
556 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) {
559 lc = login_getpwclass(pwd);
561 login_setcryptfmt(lc, "md5", NULL) == NULL)
562 warn("setting crypt(3) format");
564 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
575 if (a_name == NULL) /* Required */
576 errx(EX_DATAERR, "login name required");
577 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */
578 errx(EX_DATAERR, "login name `%s' already exists", a_name->val);
581 * Now, set up defaults for a new user
584 pwd->pw_name = a_name->val;
585 pwd->pw_class = cnf->default_class ? cnf->default_class : "";
586 pwd->pw_uid = pw_uidpolicy(cnf, args);
587 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
588 pwd->pw_change = pw_pwdpolicy(cnf, args);
589 pwd->pw_expire = pw_exppolicy(cnf, args);
590 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
591 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
592 lc = login_getpwclass(pwd);
593 if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL)
594 warn("setting crypt(3) format");
596 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
599 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
600 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name);
604 * Shared add/edit code
606 if ((arg = getarg(args, 'c')) != NULL) {
607 char *gecos = pw_checkname((u_char *)arg->val, 1);
608 if (strcmp(pwd->pw_gecos, gecos) != 0) {
609 pwd->pw_gecos = gecos;
614 if ((arg = getarg(args, 'h')) != NULL ||
615 (arg = getarg(args, 'H')) != NULL) {
616 if (strcmp(arg->val, "-") == 0) {
617 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
618 pwd->pw_passwd = "*"; /* No access */
622 int fd = atoi(arg->val);
623 int precrypt = (arg->ch == 'H');
625 int istty = isatty(fd);
630 if (tcgetattr(fd, &t) == -1)
633 struct termios n = t;
636 n.c_lflag &= ~(ECHO);
637 tcsetattr(fd, TCSANOW, &n);
638 printf("%s%spassword for user %s:",
639 (mode == M_UPDATE) ? "new " : "",
640 precrypt ? "encrypted " : "",
645 b = read(fd, line, sizeof(line) - 1);
646 if (istty) { /* Restore state */
647 tcsetattr(fd, TCSANOW, &t);
652 warn("-%c file descriptor", precrypt ? 'H' :
657 if ((p = strpbrk(line, "\r\n")) != NULL)
660 errx(EX_DATAERR, "empty password read on file descriptor %d", fd);
662 if (strchr(line, ':') != NULL)
664 pwd->pw_passwd = line;
666 lc = login_getpwclass(pwd);
668 login_setcryptfmt(lc, "md5", NULL) == NULL)
669 warn("setting crypt(3) format");
671 pwd->pw_passwd = pw_pwcrypt(line);
678 * Special case: -N only displays & exits
680 if (getarg(args, 'N') != NULL)
681 return print_user(pwd,
682 getarg(args, 'P') != NULL,
683 getarg(args, '7') != NULL);
686 edited = 1; /* Always */
689 warnx("user '%s' already exists", pwd->pw_name);
691 } else if (rc != 0) {
692 warn("passwd file update");
695 if (cnf->nispasswd && *cnf->nispasswd=='/') {
696 rc = addnispwent(cnf->nispasswd, pwd);
698 warnx("User '%s' already exists in NIS passwd", pwd->pw_name);
700 warn("NIS passwd update");
701 /* NOTE: we treat NIS-only update errors as non-fatal */
703 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) {
704 if (edited) { /* Only updated this if required */
705 rc = chgpwent(a_name->val, pwd);
707 warnx("user '%s' does not exist (NIS?)", pwd->pw_name);
709 } else if (rc != 0) {
710 warn("passwd file update");
713 if ( cnf->nispasswd && *cnf->nispasswd=='/') {
714 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd);
716 warn("User '%s' not found in NIS passwd", pwd->pw_name);
718 warn("NIS passwd update");
719 /* NOTE: NIS-only update errors are not fatal */
725 * Ok, user is created or changed - now edit group file
728 if (mode == M_ADD || getarg(args, 'G') != NULL)
729 editgroups(pwd->pw_name, cnf->groups);
731 /* go get a current version of pwd */
732 pwd = GETPWNAM(a_name->val);
734 /* This will fail when we rename, so special case that */
735 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) {
736 a_name->val = arg->val; /* update new name */
737 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */
740 if (pwd == NULL) /* can't go on without this */
741 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val);
743 grp = GETGRGID(pwd->pw_gid);
744 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s",
745 pwd->pw_name, (long) pwd->pw_uid,
746 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
747 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
750 * If adding, let's touch and chown the user's mail file. This is not
751 * strictly necessary under BSD with a 0755 maildir but it also
752 * doesn't hurt anything to create the empty mailfile
756 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
757 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents &
759 chown(line, pwd->pw_uid, pwd->pw_gid);
764 * Let's create and populate the user's home directory. Note
765 * that this also `works' for editing users if -m is used, but
766 * existing files will *not* be overwritten.
768 if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
769 copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid);
770 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
771 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
776 * Finally, send mail to the new user as well, if we are asked to
778 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
779 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");
784 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
785 while (fgets(line, sizeof(line), fp) != NULL) {
786 /* Do substitutions? */
790 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
791 pwd->pw_name, (long) pwd->pw_uid);
801 pw_uidpolicy(struct userconf * cnf, struct cargs * args)
804 uid_t uid = (uid_t) - 1;
805 struct carg *a_uid = getarg(args, 'u');
808 * Check the given uid, if any
811 uid = (uid_t) atol(a_uid->val);
813 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL)
814 errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid);
819 * We need to allocate the next available uid under one of
820 * two policies a) Grab the first unused uid b) Grab the
821 * highest possible unused uid
823 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
824 * claus^H^H^H^Hheck */
826 cnf->max_uid = 32000;
828 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
831 * Now, let's fill the bitmap from the password file
834 while ((pwd = GETPWENT()) != NULL)
835 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
836 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
840 * Then apply the policy, with fallback to reuse if necessary
842 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
843 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
846 * Another sanity check
848 if (uid < cnf->min_uid || uid > cnf->max_uid)
849 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
857 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
860 gid_t gid = (uid_t) - 1;
861 struct carg *a_gid = getarg(args, 'g');
864 * If no arg given, see if default can help out
866 if (a_gid == NULL && cnf->default_group && *cnf->default_group)
867 a_gid = addarg(args, 'g', cnf->default_group);
870 * Check the given gid, if any
874 if ((grp = GETGRNAM(a_gid->val)) == NULL) {
875 gid = (gid_t) atol(a_gid->val);
876 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL)
877 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val);
880 } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) {
881 gid = grp->gr_gid; /* Already created? Use it anyway... */
883 struct cargs grpargs;
887 addarg(&grpargs, 'n', nam);
890 * We need to auto-create a group with the user's name. We
891 * can send all the appropriate output to our sister routine
892 * bit first see if we can create a group with gid==uid so we
893 * can keep the user and group ids in sync. We purposely do
894 * NOT check the gid range if we can force the sync. If the
895 * user's name dups an existing group, then the group add
896 * function will happily handle that case for us and exit.
898 if (GETGRGID(prefer) == NULL) {
899 sprintf(tmp, "%lu", (unsigned long) prefer);
900 addarg(&grpargs, 'g', tmp);
902 if (getarg(args, 'N'))
904 addarg(&grpargs, 'N', NULL);
905 addarg(&grpargs, 'q', NULL);
906 gid = pw_group(cnf, M_NEXT, &grpargs);
910 pw_group(cnf, M_ADD, &grpargs);
911 if ((grp = GETGRNAM(nam)) != NULL)
914 a_gid = LIST_FIRST(&grpargs);
915 while (a_gid != NULL) {
916 struct carg *t = LIST_NEXT(a_gid, list);
917 LIST_REMOVE(a_gid, list);
927 pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
930 time_t now = time(NULL);
931 struct carg *arg = getarg(args, 'p');
934 if ((result = parse_date(now, arg->val)) == now)
935 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
936 } else if (cnf->password_days > 0)
937 result = now + ((long) cnf->password_days * 86400L);
943 pw_exppolicy(struct userconf * cnf, struct cargs * args)
946 time_t now = time(NULL);
947 struct carg *arg = getarg(args, 'e');
950 if ((result = parse_date(now, arg->val)) == now)
951 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
952 } else if (cnf->expire_days > 0)
953 result = now + ((long) cnf->expire_days * 86400L);
959 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
961 struct carg *arg = getarg(args, 'd');
966 static char home[128];
968 if (cnf->home == NULL || *cnf->home == '\0')
969 errx(EX_CONFIG, "no base home directory set");
970 sprintf(home, "%s/%s", cnf->home, user);
976 shell_path(char const * path, char *shells[], char *sh)
978 if (sh != NULL && (*sh == '/' || *sh == '\0'))
979 return sh; /* specified full path or forced none */
982 char paths[_UC_MAXLINE];
985 * We need to search paths
987 strlcpy(paths, path, sizeof(paths));
988 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
990 static char shellpath[256];
993 sprintf(shellpath, "%s/%s", p, sh);
994 if (access(shellpath, X_OK) == 0)
997 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
998 sprintf(shellpath, "%s/%s", p, shells[i]);
999 if (access(shellpath, X_OK) == 0)
1004 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
1005 errx(EX_CONFIG, "no default shell available or defined");
1012 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
1014 char *sh = newshell;
1015 struct carg *arg = getarg(args, 's');
1017 if (newshell == NULL && arg != NULL)
1019 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
1024 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./";
1027 pw_pwcrypt(char *password)
1030 char salt[SALTSIZE + 1];
1032 static char buf[256];
1035 * Calculate a salt value
1037 for (i = 0; i < SALTSIZE; i++)
1038 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)];
1039 salt[SALTSIZE] = '\0';
1041 return strcpy(buf, crypt(password, salt));
1046 pw_password(struct userconf * cnf, struct cargs * args, char const * user)
1051 switch (cnf->default_password) {
1052 case -1: /* Random password */
1053 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
1054 for (i = 0; i < l; i++)
1055 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)];
1059 * We give this information back to the user
1061 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL &&
1062 getarg(args, 'N') == NULL) {
1063 if (isatty(STDOUT_FILENO))
1064 printf("Password for '%s' is: ", user);
1065 printf("%s\n", pwbuf);
1070 case -2: /* No password at all! */
1073 case 0: /* No login - default */
1077 case 1: /* user's name */
1078 strlcpy(pwbuf, user, sizeof(pwbuf));
1081 return pw_pwcrypt(pwbuf);
1086 print_user(struct passwd * pwd, int pretty, int v7)
1089 char buf[_UC_MAXLINE];
1091 fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD);
1096 struct group *grp = GETGRGID(pwd->pw_gid);
1097 char uname[60] = "User &", office[60] = "[None]",
1098 wphone[60] = "[None]", hphone[60] = "[None]";
1099 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
1102 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
1103 strlcpy(uname, p, sizeof(uname));
1104 if ((p = strtok(NULL, ",")) != NULL) {
1105 strlcpy(office, p, sizeof(office));
1106 if ((p = strtok(NULL, ",")) != NULL) {
1107 strlcpy(wphone, p, sizeof(wphone));
1108 if ((p = strtok(NULL, "")) != NULL) {
1116 * Handle '&' in gecos field
1118 if ((p = strchr(uname, '&')) != NULL) {
1119 int l = strlen(pwd->pw_name);
1122 memmove(p + l, p + 1, m);
1123 memmove(p, pwd->pw_name, l);
1124 *p = (char) toupper((unsigned char)*p);
1126 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
1127 strftime(acexpire, sizeof acexpire, "%c", tptr);
1128 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
1129 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
1130 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n"
1132 " Home: %-26.26s Class: %s\n"
1133 " Shell: %-26.26s Office: %s\n"
1134 "Work Phone: %-26.26s Home Phone: %s\n"
1135 "Acc Expire: %-26.26s Pwd Expire: %s\n",
1136 pwd->pw_name, (long) pwd->pw_uid,
1137 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
1138 uname, pwd->pw_dir, pwd->pw_class,
1139 pwd->pw_shell, office, wphone, hphone,
1140 acexpire, pwexpire);
1143 while ((grp=GETGRENT()) != NULL)
1146 while (grp->gr_mem[i] != NULL)
1148 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
1150 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
1157 printf("%s", j ? "\n" : "");
1159 return EXIT_SUCCESS;
1163 pw_checkname(u_char *name, int gecos)
1166 u_char const *badchars, *ch, *showtype;
1172 /* See if the name is valid as a gecos (comment) field. */
1174 showtype = "gecos field";
1176 /* See if the name is valid as a userid or group. */
1177 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
1178 showtype = "userid/group name";
1179 /* Userids and groups can not have a leading '-'. */
1185 if (strchr(badchars, *ch) != NULL || *ch < ' ' ||
1190 /* 8-bit characters are only allowed in GECOS fields */
1191 if (!gecos && (*ch & 0x80)) {
1199 * A `$' is allowed as the final character for userids and groups,
1200 * mainly for the benefit of samba.
1202 if (reject && !gecos) {
1203 if (*ch == '$' && *(ch + 1) == '\0') {
1209 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
1210 ? "`%c'" : "0x%02x", *ch);
1211 errx(EX_DATAERR, "invalid character %s at position %td in %s",
1212 showch, (ch - name), showtype);
1214 if (!gecos && (ch - name) > LOGNAMESIZE)
1215 errx(EX_DATAERR, "name too long `%s' (max is %d)", name,
1217 return (char *)name;
1224 DIR *d = opendir("/var/at/jobs");
1229 while ((e = readdir(d)) != NULL) {
1232 if (strncmp(e->d_name, ".lock", 5) != 0 &&
1233 stat(e->d_name, &st) == 0 &&
1234 !S_ISDIR(st.st_mode) &&
1236 char tmp[MAXPATHLEN];
1238 sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
1247 rmopie(char const * name)
1249 static const char etcopie[] = "/etc/opiekeys";
1250 FILE *fp = fopen(etcopie, "r+");
1255 int length = strlen(name);
1257 while (fgets(tmp, sizeof tmp, fp) != NULL) {
1258 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') {
1259 if (fseek(fp, atofs, SEEK_SET) == 0) {
1260 fwrite("#", 1, 1, fp); /* Comment username out */
1267 * If we got an error of any sort, don't update!