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>
45 #include <login_cap.h>
46 #if defined(USE_MD5RAND)
52 #if (MAXLOGNAME-1) > UT_NAMESIZE
53 #define LOGNAMESIZE UT_NAMESIZE
55 #define LOGNAMESIZE (MAXLOGNAME-1)
58 static char locked_str[] = "*LOCKED*";
60 static int print_user(struct passwd * pwd, int pretty, int v7);
61 static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
62 static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
63 static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
64 static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
65 static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user);
66 static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell);
67 static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user);
68 static char *shell_path(char const * path, char *shells[], char *sh);
69 static void rmat(uid_t uid);
70 static void rmopie(char const * name);
73 * -C config configuration file
77 * -c comment user name/comment
78 * -d directory home directory
79 * -e date account expiry date
80 * -p date password expiry date
81 * -g grp primary group
82 * -G grp1,grp2 additional groups
83 * -m [ -k dir ] create and set up home
84 * -s shell name of login shell
87 * -l name new login name
88 * -h fd password filehandle
89 * -F force print or add
91 * -D set user defaults
92 * -b dir default home root dir
93 * -e period default expiry period
94 * -p period default password change period
95 * -g group default group
96 * -G grp1,grp2.. default additional groups
97 * -L class default login class
98 * -k dir default home skeleton
99 * -s shell default shell
100 * -w method default password method
104 pw_user(struct userconf * cnf, int mode, struct cargs * args)
112 struct passwd *pwd = NULL;
115 char line[_PASSWORD_LEN+1];
118 static struct passwd fakeuser =
130 #if defined(__FreeBSD__)
137 * With M_NEXT, we only need to return the
142 uid_t next = pw_uidpolicy(cnf, args);
143 if (getarg(args, 'q'))
145 printf("%ld:", (long)next);
146 pw_group(cnf, mode, args);
151 * We can do all of the common legwork here
154 if ((arg = getarg(args, 'b')) != NULL) {
155 cnf->home = arg->val;
159 * If we'll need to use it or we're updating it,
160 * then create the base home directory if necessary
162 if (arg != NULL || getarg(args, 'm') != NULL) {
163 int l = strlen(cnf->home);
165 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */
166 cnf->home[--l] = '\0';
168 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */
169 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home);
171 if (stat(cnf->home, &st) == -1) {
172 char dbuf[MAXPATHLEN];
175 * This is a kludge especially for Joerg :)
176 * If the home directory would be created in the root partition, then
177 * we really create it under /usr which is likely to have more space.
178 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
180 if (strchr(cnf->home+1, '/') == NULL) {
181 strcpy(dbuf, "/usr");
182 strncat(dbuf, cnf->home, MAXPATHLEN-5);
183 if (mkdir(dbuf, 0755) != -1 || errno == EEXIST) {
185 symlink(dbuf, cnf->home);
187 /* If this falls, fall back to old method */
189 p = strncpy(dbuf, cnf->home, sizeof dbuf);
190 dbuf[MAXPATHLEN-1] = '\0';
191 if (stat(dbuf, &st) == -1) {
192 while ((p = strchr(++p, '/')) != NULL) {
194 if (stat(dbuf, &st) == -1) {
195 if (mkdir(dbuf, 0755) == -1)
198 } else if (!S_ISDIR(st.st_mode))
199 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf);
203 if (stat(dbuf, &st) == -1) {
204 if (mkdir(dbuf, 0755) == -1) {
205 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf);
209 } else if (!S_ISDIR(st.st_mode))
210 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home);
213 if ((arg = getarg(args, 'e')) != NULL)
214 cnf->expire_days = atoi(arg->val);
216 if ((arg = getarg(args, 'y')) != NULL)
217 cnf->nispasswd = arg->val;
219 if ((arg = getarg(args, 'p')) != NULL && arg->val)
220 cnf->password_days = atoi(arg->val);
222 if ((arg = getarg(args, 'g')) != NULL) {
223 if (!*(p = arg->val)) /* Handle empty group list specially */
224 cnf->default_group = "";
226 if ((grp = GETGRNAM(p)) == NULL) {
227 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
228 errx(EX_NOUSER, "group `%s' does not exist", p);
230 cnf->default_group = newstr(grp->gr_name);
233 if ((arg = getarg(args, 'L')) != NULL)
234 cnf->default_class = pw_checkname((u_char *)arg->val, 0);
236 if ((arg = getarg(args, 'G')) != NULL && arg->val) {
239 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
240 if ((grp = GETGRNAM(p)) == NULL) {
241 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
242 errx(EX_NOUSER, "group `%s' does not exist", p);
244 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1)
245 cnf->groups[i++] = newstr(grp->gr_name);
247 while (i < cnf->numgroups)
248 cnf->groups[i++] = NULL;
251 if ((arg = getarg(args, 'k')) != NULL) {
252 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode))
253 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir);
256 if ((arg = getarg(args, 's')) != NULL)
257 cnf->shell_default = arg->val;
259 if ((arg = getarg(args, 'w')) != NULL)
260 cnf->default_password = boolean_val(arg->val, cnf->default_password);
261 if (mode == M_ADD && getarg(args, 'D')) {
262 if (getarg(args, 'n') != NULL)
263 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
264 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
265 if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
267 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
268 cnf->max_uid = 32000;
270 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
271 if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
273 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
274 cnf->max_gid = 32000;
277 arg = getarg(args, 'C');
278 if (write_userconfig(arg ? arg->val : NULL))
280 warn("config update");
284 if (mode == M_PRINT && getarg(args, 'a')) {
285 int pretty = getarg(args, 'P') != NULL;
286 int v7 = getarg(args, '7') != NULL;
289 while ((pwd = GETPWENT()) != NULL)
290 print_user(pwd, pretty, v7);
295 if ((a_name = getarg(args, 'n')) != NULL)
296 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0));
297 a_uid = getarg(args, 'u');
301 errx(EX_DATAERR, "user name or id required");
304 * Determine whether 'n' switch is name or uid - we don't
305 * really don't really care which we have, but we need to
308 if (mode != M_ADD && pwd == NULL
309 && strspn(a_name->val, "0123456789") == strlen(a_name->val)
310 && atoi(a_name->val) > 0) { /* Assume uid */
311 (a_uid = a_name)->ch = 'u';
317 * Update, delete & print require that the user exists
319 if (mode == M_UPDATE || mode == M_DELETE ||
320 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) {
322 if (a_name == NULL && pwd == NULL) /* Try harder */
323 pwd = GETPWUID(atoi(a_uid->val));
326 if (mode == M_PRINT && getarg(args, 'F')) {
327 fakeuser.pw_name = a_name ? a_name->val : "nouser";
328 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
329 return print_user(&fakeuser,
330 getarg(args, 'P') != NULL,
331 getarg(args, '7') != NULL);
334 errx(EX_NOUSER, "no such uid `%s'", a_uid->val);
335 errx(EX_NOUSER, "no such user `%s'", a_name->val);
338 if (a_name == NULL) /* May be needed later */
339 a_name = addarg(args, 'n', newstr(pwd->pw_name));
342 * The M_LOCK and M_UNLOCK functions simply add or remove
343 * a "*LOCKED*" prefix from in front of the password to
344 * prevent it decoding correctly, and therefore prevents
345 * access. Of course, this only prevents access via
346 * password authentication (not ssh, kerberos or any
347 * other method that does not use the UNIX password) but
348 * that is a known limitation.
351 if (mode == M_LOCK) {
352 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0)
353 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
354 passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str));
355 if (passtmp == NULL) /* disaster */
356 errx(EX_UNAVAILABLE, "out of memory");
357 strcpy(passtmp, locked_str);
358 strcat(passtmp, pwd->pw_passwd);
359 pwd->pw_passwd = passtmp;
361 } else if (mode == M_UNLOCK) {
362 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0)
363 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
364 pwd->pw_passwd += sizeof(locked_str)-1;
366 } else if (mode == M_DELETE) {
368 * Handle deletions now
370 char file[MAXPATHLEN];
371 char home[MAXPATHLEN];
372 uid_t uid = pwd->pw_uid;
374 if (strcmp(pwd->pw_name, "root") == 0)
375 errx(EX_DATAERR, "cannot remove user 'root'");
379 * Remove opie record from /etc/opiekeys
382 rmopie(pwd->pw_name);
387 sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
388 if (access(file, F_OK) == 0) {
389 sprintf(file, "crontab -u %s -r", pwd->pw_name);
394 * Save these for later, since contents of pwd may be
395 * invalidated by deletion
397 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
398 strncpy(home, pwd->pw_dir, sizeof home);
399 home[sizeof home - 1] = '\0';
403 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
405 warn("passwd update");
409 if (cnf->nispasswd && *cnf->nispasswd=='/') {
410 rc = delnispwent(cnf->nispasswd, a_name->val);
412 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name);
414 warn("WARNING: NIS passwd update");
418 editgroups(a_name->val, NULL);
420 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
431 if (getpwuid(uid) == NULL)
435 * Remove home directory and contents
437 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
438 if (stat(home, &st) != -1) {
440 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
441 a_name->val, (long) uid, home,
442 stat(home, &st) == -1 ? "" : "not completely ");
447 } else if (mode == M_PRINT)
448 return print_user(pwd,
449 getarg(args, 'P') != NULL,
450 getarg(args, '7') != NULL);
453 * The rest is edit code
455 if ((arg = getarg(args, 'l')) != NULL) {
456 if (strcmp(pwd->pw_name, "root") == 0)
457 errx(EX_DATAERR, "can't rename `root' account");
458 pwd->pw_name = pw_checkname((u_char *)arg->val, 0);
462 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) {
463 pwd->pw_uid = (uid_t) atol(arg->val);
465 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
466 errx(EX_DATAERR, "can't change uid of `root' account");
467 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
468 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name);
471 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */
472 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid;
473 if (newgid != pwd->pw_gid) {
475 pwd->pw_gid = newgid;
479 if ((arg = getarg(args, 'p')) != NULL) {
480 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
481 if (pwd->pw_change != 0) {
487 time_t now = time(NULL);
488 time_t expire = parse_date(now, arg->val);
491 errx(EX_DATAERR, "invalid password change date `%s'", arg->val);
492 if (pwd->pw_change != expire) {
493 pwd->pw_change = expire;
499 if ((arg = getarg(args, 'e')) != NULL) {
500 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
501 if (pwd->pw_expire != 0) {
507 time_t now = time(NULL);
508 time_t expire = parse_date(now, arg->val);
511 errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val);
512 if (pwd->pw_expire != expire) {
513 pwd->pw_expire = expire;
519 if ((arg = getarg(args, 's')) != NULL) {
520 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
523 if (strcmp(shell, pwd->pw_shell) != 0) {
524 pwd->pw_shell = shell;
529 if (getarg(args, 'L')) {
530 if (cnf->default_class == NULL)
531 cnf->default_class = "";
532 if (strcmp(pwd->pw_class, cnf->default_class) != 0) {
533 pwd->pw_class = cnf->default_class;
538 if ((arg = getarg(args, 'd')) != NULL) {
539 edited = strcmp(pwd->pw_dir, arg->val) != 0;
540 if (stat(pwd->pw_dir = arg->val, &st) == -1) {
541 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0)
542 warnx("WARNING: home `%s' does not exist", pwd->pw_dir);
543 } else if (!S_ISDIR(st.st_mode))
544 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir);
547 if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) {
550 lc = login_getpwclass(pwd);
552 login_setcryptfmt(lc, "md5", NULL) == NULL)
553 warn("setting crypt(3) format");
555 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
566 if (a_name == NULL) /* Required */
567 errx(EX_DATAERR, "login name required");
568 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */
569 errx(EX_DATAERR, "login name `%s' already exists", a_name->val);
572 * Now, set up defaults for a new user
575 pwd->pw_name = a_name->val;
576 pwd->pw_class = cnf->default_class ? cnf->default_class : "";
577 pwd->pw_uid = pw_uidpolicy(cnf, args);
578 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
579 pwd->pw_change = pw_pwdpolicy(cnf, args);
580 pwd->pw_expire = pw_exppolicy(cnf, args);
581 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
582 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
583 lc = login_getpwclass(pwd);
584 if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL)
585 warn("setting crypt(3) format");
587 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
590 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
591 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name);
595 * Shared add/edit code
597 if ((arg = getarg(args, 'c')) != NULL) {
598 char *gecos = pw_checkname((u_char *)arg->val, 1);
599 if (strcmp(pwd->pw_gecos, gecos) != 0) {
600 pwd->pw_gecos = gecos;
605 if ((arg = getarg(args, 'h')) != NULL) {
606 if (strcmp(arg->val, "-") == 0) {
607 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
608 pwd->pw_passwd = "*"; /* No access */
612 int fd = atoi(arg->val);
614 int istty = isatty(fd);
619 if (tcgetattr(fd, &t) == -1)
622 struct termios n = t;
625 n.c_lflag &= ~(ECHO);
626 tcsetattr(fd, TCSANOW, &n);
627 printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name);
631 b = read(fd, line, sizeof(line) - 1);
632 if (istty) { /* Restore state */
633 tcsetattr(fd, TCSANOW, &t);
638 warn("-h file descriptor");
642 if ((p = strpbrk(line, " \t\r\n")) != NULL)
645 errx(EX_DATAERR, "empty password read on file descriptor %d", fd);
646 lc = login_getpwclass(pwd);
648 login_setcryptfmt(lc, "md5", NULL) == NULL)
649 warn("setting crypt(3) format");
651 pwd->pw_passwd = pw_pwcrypt(line);
657 * Special case: -N only displays & exits
659 if (getarg(args, 'N') != NULL)
660 return print_user(pwd,
661 getarg(args, 'P') != NULL,
662 getarg(args, '7') != NULL);
665 edited = 1; /* Always */
668 warnx("user '%s' already exists", pwd->pw_name);
670 } else if (rc != 0) {
671 warn("passwd file update");
674 if (cnf->nispasswd && *cnf->nispasswd=='/') {
675 rc = addnispwent(cnf->nispasswd, pwd);
677 warnx("User '%s' already exists in NIS passwd", pwd->pw_name);
679 warn("NIS passwd update");
680 /* NOTE: we treat NIS-only update errors as non-fatal */
682 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) {
683 if (edited) { /* Only updated this if required */
684 rc = chgpwent(a_name->val, pwd);
686 warnx("user '%s' does not exist (NIS?)", pwd->pw_name);
688 } else if (rc != 0) {
689 warn("passwd file update");
692 if ( cnf->nispasswd && *cnf->nispasswd=='/') {
693 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd);
695 warn("User '%s' not found in NIS passwd", pwd->pw_name);
697 warn("NIS passwd update");
698 /* NOTE: NIS-only update errors are not fatal */
704 * Ok, user is created or changed - now edit group file
707 if (mode == M_ADD || getarg(args, 'G') != NULL)
708 editgroups(pwd->pw_name, cnf->groups);
710 /* go get a current version of pwd */
711 pwd = GETPWNAM(a_name->val);
713 /* This will fail when we rename, so special case that */
714 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) {
715 a_name->val = arg->val; /* update new name */
716 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */
719 if (pwd == NULL) /* can't go on without this */
720 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val);
722 grp = GETGRGID(pwd->pw_gid);
723 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s",
724 pwd->pw_name, (long) pwd->pw_uid,
725 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
726 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
729 * If adding, let's touch and chown the user's mail file. This is not
730 * strictly necessary under BSD with a 0755 maildir but it also
731 * doesn't hurt anything to create the empty mailfile
735 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
736 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents &
738 chown(line, pwd->pw_uid, pwd->pw_gid);
743 * Let's create and populate the user's home directory. Note
744 * that this also `works' for editing users if -m is used, but
745 * existing files will *not* be overwritten.
747 if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
748 copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid);
749 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
750 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
755 * Finally, send mail to the new user as well, if we are asked to
757 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
758 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");
763 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
764 while (fgets(line, sizeof(line), fp) != NULL) {
765 /* Do substitutions? */
769 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
770 pwd->pw_name, (long) pwd->pw_uid);
780 pw_uidpolicy(struct userconf * cnf, struct cargs * args)
783 uid_t uid = (uid_t) - 1;
784 struct carg *a_uid = getarg(args, 'u');
787 * Check the given uid, if any
790 uid = (uid_t) atol(a_uid->val);
792 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL)
793 errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid);
798 * We need to allocate the next available uid under one of
799 * two policies a) Grab the first unused uid b) Grab the
800 * highest possible unused uid
802 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
803 * claus^H^H^H^Hheck */
805 cnf->max_uid = 32000;
807 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
810 * Now, let's fill the bitmap from the password file
813 while ((pwd = GETPWENT()) != NULL)
814 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
815 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
819 * Then apply the policy, with fallback to reuse if necessary
821 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
822 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
825 * Another sanity check
827 if (uid < cnf->min_uid || uid > cnf->max_uid)
828 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
836 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
839 gid_t gid = (uid_t) - 1;
840 struct carg *a_gid = getarg(args, 'g');
843 * If no arg given, see if default can help out
845 if (a_gid == NULL && cnf->default_group && *cnf->default_group)
846 a_gid = addarg(args, 'g', cnf->default_group);
849 * Check the given gid, if any
853 if ((grp = GETGRNAM(a_gid->val)) == NULL) {
854 gid = (gid_t) atol(a_gid->val);
855 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL)
856 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val);
859 } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) {
860 gid = grp->gr_gid; /* Already created? Use it anyway... */
862 struct cargs grpargs;
866 addarg(&grpargs, 'n', nam);
869 * We need to auto-create a group with the user's name. We
870 * can send all the appropriate output to our sister routine
871 * bit first see if we can create a group with gid==uid so we
872 * can keep the user and group ids in sync. We purposely do
873 * NOT check the gid range if we can force the sync. If the
874 * user's name dups an existing group, then the group add
875 * function will happily handle that case for us and exit.
877 if (GETGRGID(prefer) == NULL) {
878 sprintf(tmp, "%lu", (unsigned long) prefer);
879 addarg(&grpargs, 'g', tmp);
881 if (getarg(args, 'N'))
883 addarg(&grpargs, 'N', NULL);
884 addarg(&grpargs, 'q', NULL);
885 gid = pw_group(cnf, M_NEXT, &grpargs);
889 pw_group(cnf, M_ADD, &grpargs);
890 if ((grp = GETGRNAM(nam)) != NULL)
893 a_gid = LIST_FIRST(&grpargs);
894 while (a_gid != NULL) {
895 struct carg *t = LIST_NEXT(a_gid, list);
896 LIST_REMOVE(a_gid, list);
906 pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
909 time_t now = time(NULL);
910 struct carg *arg = getarg(args, 'p');
913 if ((result = parse_date(now, arg->val)) == now)
914 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
915 } else if (cnf->password_days > 0)
916 result = now + ((long) cnf->password_days * 86400L);
922 pw_exppolicy(struct userconf * cnf, struct cargs * args)
925 time_t now = time(NULL);
926 struct carg *arg = getarg(args, 'e');
929 if ((result = parse_date(now, arg->val)) == now)
930 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
931 } else if (cnf->expire_days > 0)
932 result = now + ((long) cnf->expire_days * 86400L);
938 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
940 struct carg *arg = getarg(args, 'd');
945 static char home[128];
947 if (cnf->home == NULL || *cnf->home == '\0')
948 errx(EX_CONFIG, "no base home directory set");
949 sprintf(home, "%s/%s", cnf->home, user);
955 shell_path(char const * path, char *shells[], char *sh)
957 if (sh != NULL && (*sh == '/' || *sh == '\0'))
958 return sh; /* specified full path or forced none */
961 char paths[_UC_MAXLINE];
964 * We need to search paths
966 strncpy(paths, path, sizeof paths);
967 paths[sizeof paths - 1] = '\0';
968 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
970 static char shellpath[256];
973 sprintf(shellpath, "%s/%s", p, sh);
974 if (access(shellpath, X_OK) == 0)
977 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
978 sprintf(shellpath, "%s/%s", p, shells[i]);
979 if (access(shellpath, X_OK) == 0)
984 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
985 errx(EX_CONFIG, "no default shell available or defined");
992 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
995 struct carg *arg = getarg(args, 's');
997 if (newshell == NULL && arg != NULL)
999 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
1002 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.";
1005 pw_pwcrypt(char *password)
1010 static char buf[256];
1013 * Calculate a salt value
1015 for (i = 0; i < 8; i++)
1016 salt[i] = chars[arc4random() % 63];
1019 return strcpy(buf, crypt(password, salt));
1022 #if defined(USE_MD5RAND)
1024 pw_getrand(u_char *buf, int len) /* cryptographically secure rng */
1027 for (i=0;i<len;i+=16) {
1031 struct timeval tv, tvo;
1038 MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
1040 MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
1041 gettimeofday (&tvo, NULL);
1043 getrusage (RUSAGE_SELF, &ru);
1044 MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru);
1045 gettimeofday (&tv, NULL);
1046 MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv);
1047 } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000);
1048 MD5Final (ubuf, &md5_ctx);
1049 memcpy(buf+i, ubuf, MIN(16, len-i));
1054 #else /* Portable version */
1057 pw_getrand(u_char *buf, int len)
1061 for (i = 0; i < len; i++) {
1062 unsigned long val = arc4random();
1063 /* Use all bits in the random value */
1064 buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val);
1072 pw_password(struct userconf * cnf, struct cargs * args, char const * user)
1076 u_char rndbuf[sizeof pwbuf];
1078 switch (cnf->default_password) {
1079 case -1: /* Random password */
1080 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
1081 pw_getrand(rndbuf, l);
1082 for (i = 0; i < l; i++)
1083 pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)];
1087 * We give this information back to the user
1089 if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) {
1090 if (isatty(STDOUT_FILENO))
1091 printf("Password for '%s' is: ", user);
1092 printf("%s\n", pwbuf);
1097 case -2: /* No password at all! */
1100 case 0: /* No login - default */
1104 case 1: /* user's name */
1105 strncpy(pwbuf, user, sizeof pwbuf);
1106 pwbuf[sizeof pwbuf - 1] = '\0';
1109 return pw_pwcrypt(pwbuf);
1114 print_user(struct passwd * pwd, int pretty, int v7)
1117 char buf[_UC_MAXLINE];
1119 fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD);
1124 struct group *grp = GETGRGID(pwd->pw_gid);
1125 char uname[60] = "User &", office[60] = "[None]",
1126 wphone[60] = "[None]", hphone[60] = "[None]";
1127 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
1130 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
1131 strncpy(uname, p, sizeof uname);
1132 uname[sizeof uname - 1] = '\0';
1133 if ((p = strtok(NULL, ",")) != NULL) {
1134 strncpy(office, p, sizeof office);
1135 office[sizeof office - 1] = '\0';
1136 if ((p = strtok(NULL, ",")) != NULL) {
1137 strncpy(wphone, p, sizeof wphone);
1138 wphone[sizeof wphone - 1] = '\0';
1139 if ((p = strtok(NULL, "")) != NULL) {
1140 strncpy(hphone, p, sizeof hphone);
1141 hphone[sizeof hphone - 1] = '\0';
1147 * Handle '&' in gecos field
1149 if ((p = strchr(uname, '&')) != NULL) {
1150 int l = strlen(pwd->pw_name);
1153 memmove(p + l, p + 1, m);
1154 memmove(p, pwd->pw_name, l);
1155 *p = (char) toupper((unsigned char)*p);
1157 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
1158 strftime(acexpire, sizeof acexpire, "%c", tptr);
1159 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
1160 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
1161 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n"
1163 " Home: %-26.26s Class: %s\n"
1164 " Shell: %-26.26s Office: %s\n"
1165 "Work Phone: %-26.26s Home Phone: %s\n"
1166 "Acc Expire: %-26.26s Pwd Expire: %s\n",
1167 pwd->pw_name, (long) pwd->pw_uid,
1168 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
1169 uname, pwd->pw_dir, pwd->pw_class,
1170 pwd->pw_shell, office, wphone, hphone,
1171 acexpire, pwexpire);
1174 while ((grp=GETGRENT()) != NULL)
1177 while (grp->gr_mem[i] != NULL)
1179 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
1181 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
1188 printf("%s", j ? "\n" : "");
1190 return EXIT_SUCCESS;
1194 pw_checkname(u_char *name, int gecos)
1197 u_char const *badchars, *ch, *showtype;
1203 /* See if the name is valid as a gecos (comment) field. */
1205 showtype = "gecos field";
1207 /* See if the name is valid as a userid or group. */
1208 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
1209 showtype = "userid/group name";
1210 /* Userids and groups can not have a leading '-'. */
1216 if (strchr(badchars, *ch) != NULL || *ch < ' ' ||
1221 /* 8-bit characters are only allowed in GECOS fields */
1222 if (!gecos && (*ch & 0x80)) {
1230 * A `$' is allowed as the final character for userids and groups,
1231 * mainly for the benefit of samba.
1233 if (reject && !gecos) {
1234 if (*ch == '$' && *(ch + 1) == '\0') {
1240 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
1241 ? "`%c'" : "0x%02x", *ch);
1242 errx(EX_DATAERR, "invalid character %s at position %d in %s",
1243 showch, (ch - name), showtype);
1245 if (!gecos && (ch - name) > LOGNAMESIZE)
1246 errx(EX_DATAERR, "name too long `%s' (max is %d)", name,
1248 return (char *)name;
1255 DIR *d = opendir("/var/at/jobs");
1260 while ((e = readdir(d)) != NULL) {
1263 if (strncmp(e->d_name, ".lock", 5) != 0 &&
1264 stat(e->d_name, &st) == 0 &&
1265 !S_ISDIR(st.st_mode) &&
1267 char tmp[MAXPATHLEN];
1269 sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
1278 rmopie(char const * name)
1280 static const char etcopie[] = "/etc/opiekeys";
1281 FILE *fp = fopen(etcopie, "r+");
1286 int length = strlen(name);
1288 while (fgets(tmp, sizeof tmp, fp) != NULL) {
1289 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') {
1290 if (fseek(fp, atofs, SEEK_SET) == 0) {
1291 fwrite("#", 1, 1, fp); /* Comment username out */
1298 * If we got an error of any sort, don't update!