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 * -H fd encrypted password filehandle
90 * -F force print or add
92 * -D set user defaults
93 * -b dir default home root dir
94 * -e period default expiry period
95 * -p period default password change period
96 * -g group default group
97 * -G grp1,grp2.. default additional groups
98 * -L class default login class
99 * -k dir default home skeleton
100 * -s shell default shell
101 * -w method default password method
105 pw_user(struct userconf * cnf, int mode, struct cargs * args)
113 struct passwd *pwd = NULL;
116 char line[_PASSWORD_LEN+1];
122 static struct passwd fakeuser =
134 #if defined(__FreeBSD__)
141 * With M_NEXT, we only need to return the
146 uid_t next = pw_uidpolicy(cnf, args);
147 if (getarg(args, 'q'))
149 printf("%ld:", (long)next);
150 pw_group(cnf, mode, args);
155 * We can do all of the common legwork here
158 if ((arg = getarg(args, 'b')) != NULL) {
159 cnf->home = arg->val;
162 if ((arg = getarg(args, 'M')) != NULL) {
164 if ((set = setmode(dmode_c)) == NULL)
165 errx(EX_DATAERR, "invalid directory creation mode '%s'",
167 dmode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO);
169 cnf->homemode = dmode;
173 * If we'll need to use it or we're updating it,
174 * then create the base home directory if necessary
176 if (arg != NULL || getarg(args, 'm') != NULL) {
177 int l = strlen(cnf->home);
179 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */
180 cnf->home[--l] = '\0';
182 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */
183 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home);
185 if (stat(cnf->home, &st) == -1) {
186 char dbuf[MAXPATHLEN];
189 * This is a kludge especially for Joerg :)
190 * If the home directory would be created in the root partition, then
191 * we really create it under /usr which is likely to have more space.
192 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
194 if (strchr(cnf->home+1, '/') == NULL) {
195 strcpy(dbuf, "/usr");
196 strncat(dbuf, cnf->home, MAXPATHLEN-5);
197 if (mkdir(dbuf, cnf->homemode) != -1 || errno == EEXIST) {
200 * Skip first "/" and create symlink:
203 symlink(dbuf+1, cnf->home);
205 /* If this falls, fall back to old method */
207 strlcpy(dbuf, cnf->home, sizeof(dbuf));
209 if (stat(dbuf, &st) == -1) {
210 while ((p = strchr(++p, '/')) != NULL) {
212 if (stat(dbuf, &st) == -1) {
213 if (mkdir(dbuf, cnf->homemode) == -1)
216 } else if (!S_ISDIR(st.st_mode))
217 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf);
221 if (stat(dbuf, &st) == -1) {
222 if (mkdir(dbuf, cnf->homemode) == -1) {
223 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf);
227 } else if (!S_ISDIR(st.st_mode))
228 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home);
231 if ((arg = getarg(args, 'e')) != NULL)
232 cnf->expire_days = atoi(arg->val);
234 if ((arg = getarg(args, 'y')) != NULL)
235 cnf->nispasswd = arg->val;
237 if ((arg = getarg(args, 'p')) != NULL && arg->val)
238 cnf->password_days = atoi(arg->val);
240 if ((arg = getarg(args, 'g')) != NULL) {
241 if (!*(p = arg->val)) /* Handle empty group list specially */
242 cnf->default_group = "";
244 if ((grp = GETGRNAM(p)) == NULL) {
245 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
246 errx(EX_NOUSER, "group `%s' does not exist", p);
248 cnf->default_group = newstr(grp->gr_name);
251 if ((arg = getarg(args, 'L')) != NULL)
252 cnf->default_class = pw_checkname((u_char *)arg->val, 0);
254 if ((arg = getarg(args, 'G')) != NULL && arg->val) {
257 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
258 if ((grp = GETGRNAM(p)) == NULL) {
259 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
260 errx(EX_NOUSER, "group `%s' does not exist", p);
262 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1)
263 cnf->groups[i++] = newstr(grp->gr_name);
265 while (i < cnf->numgroups)
266 cnf->groups[i++] = NULL;
269 if ((arg = getarg(args, 'k')) != NULL) {
270 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode))
271 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir);
274 if ((arg = getarg(args, 's')) != NULL)
275 cnf->shell_default = arg->val;
277 if ((arg = getarg(args, 'w')) != NULL)
278 cnf->default_password = boolean_val(arg->val, cnf->default_password);
279 if (mode == M_ADD && getarg(args, 'D')) {
280 if (getarg(args, 'n') != NULL)
281 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
282 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
283 if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
285 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
286 cnf->max_uid = 32000;
288 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
289 if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
291 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
292 cnf->max_gid = 32000;
295 arg = getarg(args, 'C');
296 if (write_userconfig(arg ? arg->val : NULL))
298 warn("config update");
302 if (mode == M_PRINT && getarg(args, 'a')) {
303 int pretty = getarg(args, 'P') != NULL;
304 int v7 = getarg(args, '7') != NULL;
307 while ((pwd = GETPWENT()) != NULL)
308 print_user(pwd, pretty, v7);
313 if ((a_name = getarg(args, 'n')) != NULL)
314 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0));
315 a_uid = getarg(args, 'u');
319 errx(EX_DATAERR, "user name or id required");
322 * Determine whether 'n' switch is name or uid - we don't
323 * really don't really care which we have, but we need to
326 if (mode != M_ADD && pwd == NULL
327 && strspn(a_name->val, "0123456789") == strlen(a_name->val)
328 && atoi(a_name->val) > 0) { /* Assume uid */
329 (a_uid = a_name)->ch = 'u';
335 * Update, delete & print require that the user exists
337 if (mode == M_UPDATE || mode == M_DELETE ||
338 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) {
340 if (a_name == NULL && pwd == NULL) /* Try harder */
341 pwd = GETPWUID(atoi(a_uid->val));
344 if (mode == M_PRINT && getarg(args, 'F')) {
345 fakeuser.pw_name = a_name ? a_name->val : "nouser";
346 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
347 return print_user(&fakeuser,
348 getarg(args, 'P') != NULL,
349 getarg(args, '7') != NULL);
352 errx(EX_NOUSER, "no such uid `%s'", a_uid->val);
353 errx(EX_NOUSER, "no such user `%s'", a_name->val);
356 if (a_name == NULL) /* May be needed later */
357 a_name = addarg(args, 'n', newstr(pwd->pw_name));
360 * The M_LOCK and M_UNLOCK functions simply add or remove
361 * a "*LOCKED*" prefix from in front of the password to
362 * prevent it decoding correctly, and therefore prevents
363 * access. Of course, this only prevents access via
364 * password authentication (not ssh, kerberos or any
365 * other method that does not use the UNIX password) but
366 * that is a known limitation.
369 if (mode == M_LOCK) {
370 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0)
371 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
372 passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str));
373 if (passtmp == NULL) /* disaster */
374 errx(EX_UNAVAILABLE, "out of memory");
375 strcpy(passtmp, locked_str);
376 strcat(passtmp, pwd->pw_passwd);
377 pwd->pw_passwd = passtmp;
379 } else if (mode == M_UNLOCK) {
380 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0)
381 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
382 pwd->pw_passwd += sizeof(locked_str)-1;
384 } else if (mode == M_DELETE) {
386 * Handle deletions now
388 char file[MAXPATHLEN];
389 char home[MAXPATHLEN];
390 uid_t uid = pwd->pw_uid;
392 if (strcmp(pwd->pw_name, "root") == 0)
393 errx(EX_DATAERR, "cannot remove user 'root'");
397 * Remove opie record from /etc/opiekeys
400 rmopie(pwd->pw_name);
405 sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
406 if (access(file, F_OK) == 0) {
407 sprintf(file, "crontab -u %s -r", pwd->pw_name);
412 * Save these for later, since contents of pwd may be
413 * invalidated by deletion
415 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
416 strlcpy(home, pwd->pw_dir, sizeof(home));
420 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
422 warn("passwd update");
426 if (cnf->nispasswd && *cnf->nispasswd=='/') {
427 rc = delnispwent(cnf->nispasswd, a_name->val);
429 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name);
431 warn("WARNING: NIS passwd update");
435 editgroups(a_name->val, NULL);
437 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
448 if (getpwuid(uid) == NULL)
452 * Remove home directory and contents
454 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
455 if (stat(home, &st) != -1) {
457 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
458 a_name->val, (long) uid, home,
459 stat(home, &st) == -1 ? "" : "not completely ");
464 } else if (mode == M_PRINT)
465 return print_user(pwd,
466 getarg(args, 'P') != NULL,
467 getarg(args, '7') != NULL);
470 * The rest is edit code
472 if ((arg = getarg(args, 'l')) != NULL) {
473 if (strcmp(pwd->pw_name, "root") == 0)
474 errx(EX_DATAERR, "can't rename `root' account");
475 pwd->pw_name = pw_checkname((u_char *)arg->val, 0);
479 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) {
480 pwd->pw_uid = (uid_t) atol(arg->val);
482 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
483 errx(EX_DATAERR, "can't change uid of `root' account");
484 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
485 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name);
488 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */
489 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid;
490 if (newgid != pwd->pw_gid) {
492 pwd->pw_gid = newgid;
496 if ((arg = getarg(args, 'p')) != NULL) {
497 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
498 if (pwd->pw_change != 0) {
504 time_t now = time(NULL);
505 time_t expire = parse_date(now, arg->val);
508 errx(EX_DATAERR, "invalid password change date `%s'", arg->val);
509 if (pwd->pw_change != expire) {
510 pwd->pw_change = expire;
516 if ((arg = getarg(args, 'e')) != NULL) {
517 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
518 if (pwd->pw_expire != 0) {
524 time_t now = time(NULL);
525 time_t expire = parse_date(now, arg->val);
528 errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val);
529 if (pwd->pw_expire != expire) {
530 pwd->pw_expire = expire;
536 if ((arg = getarg(args, 's')) != NULL) {
537 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
540 if (strcmp(shell, pwd->pw_shell) != 0) {
541 pwd->pw_shell = shell;
546 if (getarg(args, 'L')) {
547 if (cnf->default_class == NULL)
548 cnf->default_class = "";
549 if (strcmp(pwd->pw_class, cnf->default_class) != 0) {
550 pwd->pw_class = cnf->default_class;
555 if ((arg = getarg(args, 'd')) != NULL) {
556 if (strcmp(pwd->pw_dir, arg->val))
558 if (stat(pwd->pw_dir = arg->val, &st) == -1) {
559 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0)
560 warnx("WARNING: home `%s' does not exist", pwd->pw_dir);
561 } else if (!S_ISDIR(st.st_mode))
562 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir);
565 if ((arg = getarg(args, 'w')) != NULL &&
566 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) {
569 lc = login_getpwclass(pwd);
571 login_setcryptfmt(lc, "md5", NULL) == NULL)
572 warn("setting crypt(3) format");
574 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
585 if (a_name == NULL) /* Required */
586 errx(EX_DATAERR, "login name required");
587 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */
588 errx(EX_DATAERR, "login name `%s' already exists", a_name->val);
591 * Now, set up defaults for a new user
594 pwd->pw_name = a_name->val;
595 pwd->pw_class = cnf->default_class ? cnf->default_class : "";
596 pwd->pw_uid = pw_uidpolicy(cnf, args);
597 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
598 pwd->pw_change = pw_pwdpolicy(cnf, args);
599 pwd->pw_expire = pw_exppolicy(cnf, args);
600 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
601 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
602 lc = login_getpwclass(pwd);
603 if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL)
604 warn("setting crypt(3) format");
606 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
609 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
610 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name);
614 * Shared add/edit code
616 if ((arg = getarg(args, 'c')) != NULL) {
617 char *gecos = pw_checkname((u_char *)arg->val, 1);
618 if (strcmp(pwd->pw_gecos, gecos) != 0) {
619 pwd->pw_gecos = gecos;
624 if ((arg = getarg(args, 'h')) != NULL ||
625 (arg = getarg(args, 'H')) != NULL) {
626 if (strcmp(arg->val, "-") == 0) {
627 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
628 pwd->pw_passwd = "*"; /* No access */
632 int fd = atoi(arg->val);
633 int precrypt = (arg->ch == 'H');
635 int istty = isatty(fd);
640 if (tcgetattr(fd, &t) == -1)
643 struct termios n = t;
646 n.c_lflag &= ~(ECHO);
647 tcsetattr(fd, TCSANOW, &n);
648 printf("%s%spassword for user %s:",
649 (mode == M_UPDATE) ? "new " : "",
650 precrypt ? "encrypted " : "",
655 b = read(fd, line, sizeof(line) - 1);
656 if (istty) { /* Restore state */
657 tcsetattr(fd, TCSANOW, &t);
662 warn("-%c file descriptor", precrypt ? 'H' :
667 if ((p = strpbrk(line, "\r\n")) != NULL)
670 errx(EX_DATAERR, "empty password read on file descriptor %d", fd);
672 if (strchr(line, ':') != NULL)
674 pwd->pw_passwd = line;
676 lc = login_getpwclass(pwd);
678 login_setcryptfmt(lc, "md5", NULL) == NULL)
679 warn("setting crypt(3) format");
681 pwd->pw_passwd = pw_pwcrypt(line);
688 * Special case: -N only displays & exits
690 if (getarg(args, 'N') != NULL)
691 return print_user(pwd,
692 getarg(args, 'P') != NULL,
693 getarg(args, '7') != NULL);
696 edited = 1; /* Always */
699 warnx("user '%s' already exists", pwd->pw_name);
701 } else if (rc != 0) {
702 warn("passwd file update");
705 if (cnf->nispasswd && *cnf->nispasswd=='/') {
706 rc = addnispwent(cnf->nispasswd, pwd);
708 warnx("User '%s' already exists in NIS passwd", pwd->pw_name);
710 warn("NIS passwd update");
711 /* NOTE: we treat NIS-only update errors as non-fatal */
713 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) {
714 if (edited) { /* Only updated this if required */
715 rc = chgpwent(a_name->val, pwd);
717 warnx("user '%s' does not exist (NIS?)", pwd->pw_name);
719 } else if (rc != 0) {
720 warn("passwd file update");
723 if ( cnf->nispasswd && *cnf->nispasswd=='/') {
724 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd);
726 warn("User '%s' not found in NIS passwd", pwd->pw_name);
728 warn("NIS passwd update");
729 /* NOTE: NIS-only update errors are not fatal */
735 * Ok, user is created or changed - now edit group file
738 if (mode == M_ADD || getarg(args, 'G') != NULL)
739 editgroups(pwd->pw_name, cnf->groups);
741 /* go get a current version of pwd */
742 pwd = GETPWNAM(a_name->val);
744 /* This will fail when we rename, so special case that */
745 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) {
746 a_name->val = arg->val; /* update new name */
747 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */
750 if (pwd == NULL) /* can't go on without this */
751 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val);
753 grp = GETGRGID(pwd->pw_gid);
754 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s",
755 pwd->pw_name, (long) pwd->pw_uid,
756 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
757 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
760 * If adding, let's touch and chown the user's mail file. This is not
761 * strictly necessary under BSD with a 0755 maildir but it also
762 * doesn't hurt anything to create the empty mailfile
766 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
767 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents &
769 chown(line, pwd->pw_uid, pwd->pw_gid);
774 * Let's create and populate the user's home directory. Note
775 * that this also `works' for editing users if -m is used, but
776 * existing files will *not* be overwritten.
778 if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
779 copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid);
780 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
781 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
786 * Finally, send mail to the new user as well, if we are asked to
788 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
789 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");
794 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
795 while (fgets(line, sizeof(line), fp) != NULL) {
796 /* Do substitutions? */
800 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
801 pwd->pw_name, (long) pwd->pw_uid);
811 pw_uidpolicy(struct userconf * cnf, struct cargs * args)
814 uid_t uid = (uid_t) - 1;
815 struct carg *a_uid = getarg(args, 'u');
818 * Check the given uid, if any
821 uid = (uid_t) atol(a_uid->val);
823 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL)
824 errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid);
829 * We need to allocate the next available uid under one of
830 * two policies a) Grab the first unused uid b) Grab the
831 * highest possible unused uid
833 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
834 * claus^H^H^H^Hheck */
836 cnf->max_uid = 32000;
838 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
841 * Now, let's fill the bitmap from the password file
844 while ((pwd = GETPWENT()) != NULL)
845 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
846 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
850 * Then apply the policy, with fallback to reuse if necessary
852 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
853 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
856 * Another sanity check
858 if (uid < cnf->min_uid || uid > cnf->max_uid)
859 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
867 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
870 gid_t gid = (uid_t) - 1;
871 struct carg *a_gid = getarg(args, 'g');
874 * If no arg given, see if default can help out
876 if (a_gid == NULL && cnf->default_group && *cnf->default_group)
877 a_gid = addarg(args, 'g', cnf->default_group);
880 * Check the given gid, if any
884 if ((grp = GETGRNAM(a_gid->val)) == NULL) {
885 gid = (gid_t) atol(a_gid->val);
886 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL)
887 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val);
890 } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) {
891 gid = grp->gr_gid; /* Already created? Use it anyway... */
893 struct cargs grpargs;
897 addarg(&grpargs, 'n', nam);
900 * We need to auto-create a group with the user's name. We
901 * can send all the appropriate output to our sister routine
902 * bit first see if we can create a group with gid==uid so we
903 * can keep the user and group ids in sync. We purposely do
904 * NOT check the gid range if we can force the sync. If the
905 * user's name dups an existing group, then the group add
906 * function will happily handle that case for us and exit.
908 if (GETGRGID(prefer) == NULL) {
909 sprintf(tmp, "%lu", (unsigned long) prefer);
910 addarg(&grpargs, 'g', tmp);
912 if (getarg(args, 'N'))
914 addarg(&grpargs, 'N', NULL);
915 addarg(&grpargs, 'q', NULL);
916 gid = pw_group(cnf, M_NEXT, &grpargs);
920 pw_group(cnf, M_ADD, &grpargs);
921 if ((grp = GETGRNAM(nam)) != NULL)
924 a_gid = LIST_FIRST(&grpargs);
925 while (a_gid != NULL) {
926 struct carg *t = LIST_NEXT(a_gid, list);
927 LIST_REMOVE(a_gid, list);
937 pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
940 time_t now = time(NULL);
941 struct carg *arg = getarg(args, 'p');
944 if ((result = parse_date(now, arg->val)) == now)
945 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
946 } else if (cnf->password_days > 0)
947 result = now + ((long) cnf->password_days * 86400L);
953 pw_exppolicy(struct userconf * cnf, struct cargs * args)
956 time_t now = time(NULL);
957 struct carg *arg = getarg(args, 'e');
960 if ((result = parse_date(now, arg->val)) == now)
961 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
962 } else if (cnf->expire_days > 0)
963 result = now + ((long) cnf->expire_days * 86400L);
969 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
971 struct carg *arg = getarg(args, 'd');
976 static char home[128];
978 if (cnf->home == NULL || *cnf->home == '\0')
979 errx(EX_CONFIG, "no base home directory set");
980 sprintf(home, "%s/%s", cnf->home, user);
986 shell_path(char const * path, char *shells[], char *sh)
988 if (sh != NULL && (*sh == '/' || *sh == '\0'))
989 return sh; /* specified full path or forced none */
992 char paths[_UC_MAXLINE];
995 * We need to search paths
997 strlcpy(paths, path, sizeof(paths));
998 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
1000 static char shellpath[256];
1003 sprintf(shellpath, "%s/%s", p, sh);
1004 if (access(shellpath, X_OK) == 0)
1007 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
1008 sprintf(shellpath, "%s/%s", p, shells[i]);
1009 if (access(shellpath, X_OK) == 0)
1014 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
1015 errx(EX_CONFIG, "no default shell available or defined");
1022 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
1024 char *sh = newshell;
1025 struct carg *arg = getarg(args, 's');
1027 if (newshell == NULL && arg != NULL)
1029 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
1034 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./";
1037 pw_pwcrypt(char *password)
1040 char salt[SALTSIZE + 1];
1042 static char buf[256];
1045 * Calculate a salt value
1047 for (i = 0; i < SALTSIZE; i++)
1048 salt[i] = chars[arc4random() % (sizeof(chars) - 1)];
1049 salt[SALTSIZE] = '\0';
1051 return strcpy(buf, crypt(password, salt));
1054 #if defined(USE_MD5RAND)
1056 pw_getrand(u_char *buf, int len) /* cryptographically secure rng */
1059 for (i=0;i<len;i+=16) {
1063 struct timeval tv, tvo;
1070 MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
1072 MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
1073 gettimeofday (&tvo, NULL);
1075 getrusage (RUSAGE_SELF, &ru);
1076 MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru);
1077 gettimeofday (&tv, NULL);
1078 MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv);
1079 } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000);
1080 MD5Final (ubuf, &md5_ctx);
1081 memcpy(buf+i, ubuf, MIN(16, len-i));
1086 #else /* Portable version */
1089 pw_getrand(u_char *buf, int len)
1093 for (i = 0; i < len; i++) {
1094 unsigned long val = arc4random();
1095 /* Use all bits in the random value */
1096 buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val);
1104 pw_password(struct userconf * cnf, struct cargs * args, char const * user)
1108 u_char rndbuf[sizeof pwbuf];
1110 switch (cnf->default_password) {
1111 case -1: /* Random password */
1112 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
1113 pw_getrand(rndbuf, l);
1114 for (i = 0; i < l; i++)
1115 pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)];
1119 * We give this information back to the user
1121 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL &&
1122 getarg(args, 'N') == NULL) {
1123 if (isatty(STDOUT_FILENO))
1124 printf("Password for '%s' is: ", user);
1125 printf("%s\n", pwbuf);
1130 case -2: /* No password at all! */
1133 case 0: /* No login - default */
1137 case 1: /* user's name */
1138 strlcpy(pwbuf, user, sizeof(pwbuf));
1141 return pw_pwcrypt(pwbuf);
1146 print_user(struct passwd * pwd, int pretty, int v7)
1149 char buf[_UC_MAXLINE];
1151 fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD);
1156 struct group *grp = GETGRGID(pwd->pw_gid);
1157 char uname[60] = "User &", office[60] = "[None]",
1158 wphone[60] = "[None]", hphone[60] = "[None]";
1159 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
1162 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
1163 strlcpy(uname, p, sizeof(uname));
1164 if ((p = strtok(NULL, ",")) != NULL) {
1165 strlcpy(office, p, sizeof(office));
1166 if ((p = strtok(NULL, ",")) != NULL) {
1167 strlcpy(wphone, p, sizeof(wphone));
1168 if ((p = strtok(NULL, "")) != NULL) {
1176 * Handle '&' in gecos field
1178 if ((p = strchr(uname, '&')) != NULL) {
1179 int l = strlen(pwd->pw_name);
1182 memmove(p + l, p + 1, m);
1183 memmove(p, pwd->pw_name, l);
1184 *p = (char) toupper((unsigned char)*p);
1186 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
1187 strftime(acexpire, sizeof acexpire, "%c", tptr);
1188 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
1189 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
1190 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n"
1192 " Home: %-26.26s Class: %s\n"
1193 " Shell: %-26.26s Office: %s\n"
1194 "Work Phone: %-26.26s Home Phone: %s\n"
1195 "Acc Expire: %-26.26s Pwd Expire: %s\n",
1196 pwd->pw_name, (long) pwd->pw_uid,
1197 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
1198 uname, pwd->pw_dir, pwd->pw_class,
1199 pwd->pw_shell, office, wphone, hphone,
1200 acexpire, pwexpire);
1203 while ((grp=GETGRENT()) != NULL)
1206 while (grp->gr_mem[i] != NULL)
1208 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
1210 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
1217 printf("%s", j ? "\n" : "");
1219 return EXIT_SUCCESS;
1223 pw_checkname(u_char *name, int gecos)
1226 u_char const *badchars, *ch, *showtype;
1232 /* See if the name is valid as a gecos (comment) field. */
1234 showtype = "gecos field";
1236 /* See if the name is valid as a userid or group. */
1237 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
1238 showtype = "userid/group name";
1239 /* Userids and groups can not have a leading '-'. */
1245 if (strchr(badchars, *ch) != NULL || *ch < ' ' ||
1250 /* 8-bit characters are only allowed in GECOS fields */
1251 if (!gecos && (*ch & 0x80)) {
1259 * A `$' is allowed as the final character for userids and groups,
1260 * mainly for the benefit of samba.
1262 if (reject && !gecos) {
1263 if (*ch == '$' && *(ch + 1) == '\0') {
1269 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
1270 ? "`%c'" : "0x%02x", *ch);
1271 errx(EX_DATAERR, "invalid character %s at position %d in %s",
1272 showch, (ch - name), showtype);
1274 if (!gecos && (ch - name) > LOGNAMESIZE)
1275 errx(EX_DATAERR, "name too long `%s' (max is %d)", name,
1277 return (char *)name;
1284 DIR *d = opendir("/var/at/jobs");
1289 while ((e = readdir(d)) != NULL) {
1292 if (strncmp(e->d_name, ".lock", 5) != 0 &&
1293 stat(e->d_name, &st) == 0 &&
1294 !S_ISDIR(st.st_mode) &&
1296 char tmp[MAXPATHLEN];
1298 sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
1307 rmopie(char const * name)
1309 static const char etcopie[] = "/etc/opiekeys";
1310 FILE *fp = fopen(etcopie, "r+");
1315 int length = strlen(name);
1317 while (fgets(tmp, sizeof tmp, fp) != NULL) {
1318 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') {
1319 if (fseek(fp, atofs, SEEK_SET) == 0) {
1320 fwrite("#", 1, 1, fp); /* Comment username out */
1327 * If we got an error of any sort, don't update!