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
27 * $FreeBSD: src/usr.sbin/pw/pw_user.c,v 1.34.2.13 2003/02/01 21:20:10 gad Exp $
28 * $DragonFly: src/usr.sbin/pw/pw_user.c,v 1.3 2004/02/10 02:59:43 rob Exp $
34 #include <sys/param.h>
38 #include <sys/types.h>
40 #include <sys/resource.h>
43 #include <login_cap.h>
44 #if defined(USE_MD5RAND)
50 #if (MAXLOGNAME-1) > UT_NAMESIZE
51 #define LOGNAMESIZE UT_NAMESIZE
53 #define LOGNAMESIZE (MAXLOGNAME-1)
56 static char locked_str[] = "*LOCKED*";
58 static int print_user(struct passwd * pwd, int pretty, int v7);
59 static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
60 static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
61 static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
62 static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
63 static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user);
64 static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell);
65 static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user);
66 static char *shell_path(char const * path, char *shells[], char *sh);
67 static void rmat(uid_t uid);
68 static void rmskey(char const * name);
71 * -C config configuration file
75 * -c comment user name/comment
76 * -d directory home directory
77 * -e date account expiry date
78 * -p date password expiry date
79 * -g grp primary group
80 * -G grp1,grp2 additional groups
81 * -m [ -k dir ] create and set up home
82 * -s shell name of login shell
85 * -l name new login name
86 * -h fd password filehandle
87 * -F force print or add
89 * -D set user defaults
90 * -b dir default home root dir
91 * -e period default expiry period
92 * -p period default password change period
93 * -g group default group
94 * -G grp1,grp2.. default additional groups
95 * -L class default login class
96 * -k dir default home skeleton
97 * -s shell default shell
98 * -w method default password method
102 pw_user(struct userconf * cnf, int mode, struct cargs * args)
110 struct passwd *pwd = NULL;
113 char line[_PASSWORD_LEN+1];
116 static struct passwd fakeuser =
128 #if defined(__DragonFly__)
135 * With M_NEXT, we only need to return the
140 uid_t next = pw_uidpolicy(cnf, args);
141 if (getarg(args, 'q'))
143 printf("%ld:", (long)next);
144 pw_group(cnf, mode, args);
149 * We can do all of the common legwork here
152 if ((arg = getarg(args, 'b')) != NULL) {
153 cnf->home = arg->val;
157 * If we'll need to use it or we're updating it,
158 * then create the base home directory if necessary
160 if (arg != NULL || getarg(args, 'm') != NULL) {
161 int l = strlen(cnf->home);
163 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */
164 cnf->home[--l] = '\0';
166 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */
167 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home);
169 if (stat(cnf->home, &st) == -1) {
170 char dbuf[MAXPATHLEN];
173 * This is a kludge especially for Joerg :)
174 * If the home directory would be created in the root partition, then
175 * we really create it under /usr which is likely to have more space.
176 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
178 if (strchr(cnf->home+1, '/') == NULL) {
179 strcpy(dbuf, "/usr");
180 strncat(dbuf, cnf->home, MAXPATHLEN-5);
181 if (mkdir(dbuf, 0755) != -1 || errno == EEXIST) {
183 symlink(dbuf, cnf->home);
185 /* If this falls, fall back to old method */
187 p = strncpy(dbuf, cnf->home, sizeof dbuf);
188 dbuf[MAXPATHLEN-1] = '\0';
189 if (stat(dbuf, &st) == -1) {
190 while ((p = strchr(++p, '/')) != NULL) {
192 if (stat(dbuf, &st) == -1) {
193 if (mkdir(dbuf, 0755) == -1)
196 } else if (!S_ISDIR(st.st_mode))
197 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf);
201 if (stat(dbuf, &st) == -1) {
202 if (mkdir(dbuf, 0755) == -1) {
203 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf);
207 } else if (!S_ISDIR(st.st_mode))
208 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home);
211 if ((arg = getarg(args, 'e')) != NULL)
212 cnf->expire_days = atoi(arg->val);
214 if ((arg = getarg(args, 'y')) != NULL)
215 cnf->nispasswd = arg->val;
217 if ((arg = getarg(args, 'p')) != NULL && arg->val)
218 cnf->password_days = atoi(arg->val);
220 if ((arg = getarg(args, 'g')) != NULL) {
221 if (!*(p = arg->val)) /* Handle empty group list specially */
222 cnf->default_group = "";
224 if ((grp = GETGRNAM(p)) == NULL) {
225 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
226 errx(EX_NOUSER, "group `%s' does not exist", p);
228 cnf->default_group = newstr(grp->gr_name);
231 if ((arg = getarg(args, 'L')) != NULL)
232 cnf->default_class = pw_checkname((u_char *)arg->val, 0);
234 if ((arg = getarg(args, 'G')) != NULL && arg->val) {
237 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) {
238 if ((grp = GETGRNAM(p)) == NULL) {
239 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL)
240 errx(EX_NOUSER, "group `%s' does not exist", p);
242 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1)
243 cnf->groups[i++] = newstr(grp->gr_name);
245 while (i < cnf->numgroups)
246 cnf->groups[i++] = NULL;
249 if ((arg = getarg(args, 'k')) != NULL) {
250 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode))
251 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir);
254 if ((arg = getarg(args, 's')) != NULL)
255 cnf->shell_default = arg->val;
257 if ((arg = getarg(args, 'w')) != NULL)
258 cnf->default_password = boolean_val(arg->val, cnf->default_password);
259 if (mode == M_ADD && getarg(args, 'D')) {
260 if (getarg(args, 'n') != NULL)
261 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
262 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
263 if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
265 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
266 cnf->max_uid = 32000;
268 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
269 if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
271 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
272 cnf->max_gid = 32000;
275 arg = getarg(args, 'C');
276 if (write_userconfig(arg ? arg->val : NULL))
278 warn("config update");
282 if (mode == M_PRINT && getarg(args, 'a')) {
283 int pretty = getarg(args, 'P') != NULL;
284 int v7 = getarg(args, '7') != NULL;
287 while ((pwd = GETPWENT()) != NULL)
288 print_user(pwd, pretty, v7);
293 if ((a_name = getarg(args, 'n')) != NULL)
294 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0));
295 a_uid = getarg(args, 'u');
299 errx(EX_DATAERR, "user name or id required");
302 * Determine whether 'n' switch is name or uid - we don't
303 * really don't really care which we have, but we need to
306 if (mode != M_ADD && pwd == NULL
307 && strspn(a_name->val, "0123456789") == strlen(a_name->val)
308 && atoi(a_name->val) > 0) { /* Assume uid */
309 (a_uid = a_name)->ch = 'u';
315 * Update, delete & print require that the user exists
317 if (mode == M_UPDATE || mode == M_DELETE ||
318 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) {
320 if (a_name == NULL && pwd == NULL) /* Try harder */
321 pwd = GETPWUID(atoi(a_uid->val));
324 if (mode == M_PRINT && getarg(args, 'F')) {
325 fakeuser.pw_name = a_name ? a_name->val : "nouser";
326 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
327 return print_user(&fakeuser,
328 getarg(args, 'P') != NULL,
329 getarg(args, '7') != NULL);
332 errx(EX_NOUSER, "no such uid `%s'", a_uid->val);
333 errx(EX_NOUSER, "no such user `%s'", a_name->val);
336 if (a_name == NULL) /* May be needed later */
337 a_name = addarg(args, 'n', newstr(pwd->pw_name));
340 * The M_LOCK and M_UNLOCK functions simply add or remove
341 * a "*LOCKED*" prefix from in front of the password to
342 * prevent it decoding correctly, and therefore prevents
343 * access. Of course, this only prevents access via
344 * password authentication (not ssh, kerberos or any
345 * other method that does not use the UNIX password) but
346 * that is a known limitation.
349 if (mode == M_LOCK) {
350 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0)
351 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
352 passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str));
353 if (passtmp == NULL) /* disaster */
354 errx(EX_UNAVAILABLE, "out of memory");
355 strcpy(passtmp, locked_str);
356 strcat(passtmp, pwd->pw_passwd);
357 pwd->pw_passwd = passtmp;
359 } else if (mode == M_UNLOCK) {
360 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0)
361 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
362 pwd->pw_passwd += sizeof(locked_str)-1;
364 } else if (mode == M_DELETE) {
366 * Handle deletions now
368 char file[MAXPATHLEN];
369 char home[MAXPATHLEN];
370 uid_t uid = pwd->pw_uid;
372 if (strcmp(pwd->pw_name, "root") == 0)
373 errx(EX_DATAERR, "cannot remove user 'root'");
377 * Remove skey record from /etc/skeykeys
380 rmskey(pwd->pw_name);
385 sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
386 if (access(file, F_OK) == 0) {
387 sprintf(file, "crontab -u %s -r", pwd->pw_name);
392 * Save these for later, since contents of pwd may be
393 * invalidated by deletion
395 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
396 strncpy(home, pwd->pw_dir, sizeof home);
397 home[sizeof home - 1] = '\0';
401 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
403 warn("passwd update");
407 if (cnf->nispasswd && *cnf->nispasswd=='/') {
408 rc = delnispwent(cnf->nispasswd, a_name->val);
410 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name);
412 warn("WARNING: NIS passwd update");
416 editgroups(a_name->val, NULL);
418 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
429 if (getpwuid(uid) == NULL)
433 * Remove home directory and contents
435 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
436 if (stat(home, &st) != -1) {
438 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
439 a_name->val, (long) uid, home,
440 stat(home, &st) == -1 ? "" : "not completely ");
445 } else if (mode == M_PRINT)
446 return print_user(pwd,
447 getarg(args, 'P') != NULL,
448 getarg(args, '7') != NULL);
451 * The rest is edit code
453 if ((arg = getarg(args, 'l')) != NULL) {
454 if (strcmp(pwd->pw_name, "root") == 0)
455 errx(EX_DATAERR, "can't rename `root' account");
456 pwd->pw_name = pw_checkname((u_char *)arg->val, 0);
460 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) {
461 pwd->pw_uid = (uid_t) atol(arg->val);
463 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
464 errx(EX_DATAERR, "can't change uid of `root' account");
465 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
466 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name);
469 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */
470 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid;
471 if (newgid != pwd->pw_gid) {
473 pwd->pw_gid = newgid;
477 if ((arg = getarg(args, 'p')) != NULL) {
478 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
479 if (pwd->pw_change != 0) {
485 time_t now = time(NULL);
486 time_t expire = parse_date(now, arg->val);
489 errx(EX_DATAERR, "invalid password change date `%s'", arg->val);
490 if (pwd->pw_change != expire) {
491 pwd->pw_change = expire;
497 if ((arg = getarg(args, 'e')) != NULL) {
498 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) {
499 if (pwd->pw_expire != 0) {
505 time_t now = time(NULL);
506 time_t expire = parse_date(now, arg->val);
509 errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val);
510 if (pwd->pw_expire != expire) {
511 pwd->pw_expire = expire;
517 if ((arg = getarg(args, 's')) != NULL) {
518 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
521 if (strcmp(shell, pwd->pw_shell) != 0) {
522 pwd->pw_shell = shell;
527 if (getarg(args, 'L')) {
528 if (cnf->default_class == NULL)
529 cnf->default_class = "";
530 if (strcmp(pwd->pw_class, cnf->default_class) != 0) {
531 pwd->pw_class = cnf->default_class;
536 if ((arg = getarg(args, 'd')) != NULL) {
537 edited = strcmp(pwd->pw_dir, arg->val) != 0;
538 if (stat(pwd->pw_dir = arg->val, &st) == -1) {
539 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0)
540 warnx("WARNING: home `%s' does not exist", pwd->pw_dir);
541 } else if (!S_ISDIR(st.st_mode))
542 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir);
545 if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) {
548 lc = login_getpwclass(pwd);
550 login_setcryptfmt(lc, "md5", NULL) == NULL)
551 warn("setting crypt(3) format");
553 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
564 if (a_name == NULL) /* Required */
565 errx(EX_DATAERR, "login name required");
566 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */
567 errx(EX_DATAERR, "login name `%s' already exists", a_name->val);
570 * Now, set up defaults for a new user
573 pwd->pw_name = a_name->val;
574 pwd->pw_class = cnf->default_class ? cnf->default_class : "";
575 pwd->pw_uid = pw_uidpolicy(cnf, args);
576 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
577 pwd->pw_change = pw_pwdpolicy(cnf, args);
578 pwd->pw_expire = pw_exppolicy(cnf, args);
579 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
580 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
581 lc = login_getpwclass(pwd);
582 if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL)
583 warn("setting crypt(3) format");
585 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
588 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
589 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name);
593 * Shared add/edit code
595 if ((arg = getarg(args, 'c')) != NULL) {
596 char *gecos = pw_checkname((u_char *)arg->val, 1);
597 if (strcmp(pwd->pw_gecos, gecos) != 0) {
598 pwd->pw_gecos = gecos;
603 if ((arg = getarg(args, 'h')) != NULL) {
604 if (strcmp(arg->val, "-") == 0) {
605 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
606 pwd->pw_passwd = "*"; /* No access */
610 int fd = atoi(arg->val);
612 int istty = isatty(fd);
617 if (tcgetattr(fd, &t) == -1)
620 struct termios n = t;
623 n.c_lflag &= ~(ECHO);
624 tcsetattr(fd, TCSANOW, &n);
625 printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name);
629 b = read(fd, line, sizeof(line) - 1);
630 if (istty) { /* Restore state */
631 tcsetattr(fd, TCSANOW, &t);
636 warn("-h file descriptor");
640 if ((p = strpbrk(line, " \t\r\n")) != NULL)
643 errx(EX_DATAERR, "empty password read on file descriptor %d", fd);
644 lc = login_getpwclass(pwd);
646 login_setcryptfmt(lc, "md5", NULL) == NULL)
647 warn("setting crypt(3) format");
649 pwd->pw_passwd = pw_pwcrypt(line);
655 * Special case: -N only displays & exits
657 if (getarg(args, 'N') != NULL)
658 return print_user(pwd,
659 getarg(args, 'P') != NULL,
660 getarg(args, '7') != NULL);
663 edited = 1; /* Always */
666 warnx("user '%s' already exists", pwd->pw_name);
668 } else if (rc != 0) {
669 warn("passwd file update");
672 if (cnf->nispasswd && *cnf->nispasswd=='/') {
673 rc = addnispwent(cnf->nispasswd, pwd);
675 warnx("User '%s' already exists in NIS passwd", pwd->pw_name);
677 warn("NIS passwd update");
678 /* NOTE: we treat NIS-only update errors as non-fatal */
680 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) {
681 if (edited) { /* Only updated this if required */
682 rc = chgpwent(a_name->val, pwd);
684 warnx("user '%s' does not exist (NIS?)", pwd->pw_name);
686 } else if (rc != 0) {
687 warn("passwd file update");
690 if ( cnf->nispasswd && *cnf->nispasswd=='/') {
691 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd);
693 warn("User '%s' not found in NIS passwd", pwd->pw_name);
695 warn("NIS passwd update");
696 /* NOTE: NIS-only update errors are not fatal */
702 * Ok, user is created or changed - now edit group file
705 if (mode == M_ADD || getarg(args, 'G') != NULL)
706 editgroups(pwd->pw_name, cnf->groups);
708 /* go get a current version of pwd */
709 pwd = GETPWNAM(a_name->val);
711 /* This will fail when we rename, so special case that */
712 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) {
713 a_name->val = arg->val; /* update new name */
714 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */
717 if (pwd == NULL) /* can't go on without this */
718 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val);
720 grp = GETGRGID(pwd->pw_gid);
721 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s",
722 pwd->pw_name, (long) pwd->pw_uid,
723 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
724 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
727 * If adding, let's touch and chown the user's mail file. This is not
728 * strictly necessary under BSD with a 0755 maildir but it also
729 * doesn't hurt anything to create the empty mailfile
733 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
734 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents &
736 chown(line, pwd->pw_uid, pwd->pw_gid);
741 * Let's create and populate the user's home directory. Note
742 * that this also `works' for editing users if -m is used, but
743 * existing files will *not* be overwritten.
745 if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
746 copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid);
747 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
748 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
753 * Finally, send mail to the new user as well, if we are asked to
755 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
756 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");
761 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
762 while (fgets(line, sizeof(line), fp) != NULL) {
763 /* Do substitutions? */
767 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
768 pwd->pw_name, (long) pwd->pw_uid);
778 pw_uidpolicy(struct userconf * cnf, struct cargs * args)
781 uid_t uid = (uid_t) - 1;
782 struct carg *a_uid = getarg(args, 'u');
785 * Check the given uid, if any
788 uid = (uid_t) atol(a_uid->val);
790 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL)
791 errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid);
796 * We need to allocate the next available uid under one of
797 * two policies a) Grab the first unused uid b) Grab the
798 * highest possible unused uid
800 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
801 * claus^H^H^H^Hheck */
803 cnf->max_uid = 32000;
805 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
808 * Now, let's fill the bitmap from the password file
811 while ((pwd = GETPWENT()) != NULL)
812 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
813 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
817 * Then apply the policy, with fallback to reuse if necessary
819 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
820 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
823 * Another sanity check
825 if (uid < cnf->min_uid || uid > cnf->max_uid)
826 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
834 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
837 gid_t gid = (uid_t) - 1;
838 struct carg *a_gid = getarg(args, 'g');
841 * If no arg given, see if default can help out
843 if (a_gid == NULL && cnf->default_group && *cnf->default_group)
844 a_gid = addarg(args, 'g', cnf->default_group);
847 * Check the given gid, if any
851 if ((grp = GETGRNAM(a_gid->val)) == NULL) {
852 gid = (gid_t) atol(a_gid->val);
853 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL)
854 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val);
857 } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) {
858 gid = grp->gr_gid; /* Already created? Use it anyway... */
860 struct cargs grpargs;
864 addarg(&grpargs, 'n', nam);
867 * We need to auto-create a group with the user's name. We
868 * can send all the appropriate output to our sister routine
869 * bit first see if we can create a group with gid==uid so we
870 * can keep the user and group ids in sync. We purposely do
871 * NOT check the gid range if we can force the sync. If the
872 * user's name dups an existing group, then the group add
873 * function will happily handle that case for us and exit.
875 if (GETGRGID(prefer) == NULL) {
876 sprintf(tmp, "%lu", (unsigned long) prefer);
877 addarg(&grpargs, 'g', tmp);
879 if (getarg(args, 'N'))
881 addarg(&grpargs, 'N', NULL);
882 addarg(&grpargs, 'q', NULL);
883 gid = pw_group(cnf, M_NEXT, &grpargs);
887 pw_group(cnf, M_ADD, &grpargs);
888 if ((grp = GETGRNAM(nam)) != NULL)
891 a_gid = grpargs.lh_first;
892 while (a_gid != NULL) {
893 struct carg *t = a_gid->list.le_next;
894 LIST_REMOVE(a_gid, list);
904 pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
907 time_t now = time(NULL);
908 struct carg *arg = getarg(args, 'p');
911 if ((result = parse_date(now, arg->val)) == now)
912 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
913 } else if (cnf->password_days > 0)
914 result = now + ((long) cnf->password_days * 86400L);
920 pw_exppolicy(struct userconf * cnf, struct cargs * args)
923 time_t now = time(NULL);
924 struct carg *arg = getarg(args, 'e');
927 if ((result = parse_date(now, arg->val)) == now)
928 errx(EX_DATAERR, "invalid date/time `%s'", arg->val);
929 } else if (cnf->expire_days > 0)
930 result = now + ((long) cnf->expire_days * 86400L);
936 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
938 struct carg *arg = getarg(args, 'd');
943 static char home[128];
945 if (cnf->home == NULL || *cnf->home == '\0')
946 errx(EX_CONFIG, "no base home directory set");
947 sprintf(home, "%s/%s", cnf->home, user);
953 shell_path(char const * path, char *shells[], char *sh)
955 if (sh != NULL && (*sh == '/' || *sh == '\0'))
956 return sh; /* specified full path or forced none */
959 char paths[_UC_MAXLINE];
962 * We need to search paths
964 strncpy(paths, path, sizeof paths);
965 paths[sizeof paths - 1] = '\0';
966 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
968 static char shellpath[256];
971 sprintf(shellpath, "%s/%s", p, sh);
972 if (access(shellpath, X_OK) == 0)
975 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
976 sprintf(shellpath, "%s/%s", p, shells[i]);
977 if (access(shellpath, X_OK) == 0)
982 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
983 errx(EX_CONFIG, "no default shell available or defined");
990 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
993 struct carg *arg = getarg(args, 's');
995 if (newshell == NULL && arg != NULL)
997 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
1000 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.";
1003 pw_pwcrypt(char *password)
1008 static char buf[256];
1011 * Calculate a salt value
1013 for (i = 0; i < 8; i++)
1014 salt[i] = chars[arc4random() % 63];
1017 return strcpy(buf, crypt(password, salt));
1020 #if defined(USE_MD5RAND)
1022 pw_getrand(u_char *buf, int len) /* cryptographically secure rng */
1025 for (i=0;i<len;i+=16) {
1029 struct timeval tv, tvo;
1036 MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
1038 MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
1039 gettimeofday (&tvo, NULL);
1041 getrusage (RUSAGE_SELF, &ru);
1042 MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru);
1043 gettimeofday (&tv, NULL);
1044 MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv);
1045 } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000);
1046 MD5Final (ubuf, &md5_ctx);
1047 memcpy(buf+i, ubuf, MIN(16, len-i));
1052 #else /* Portable version */
1055 pw_getrand(u_char *buf, int len)
1060 for (i = 0; i < len; i++) {
1061 unsigned long val = random();
1062 /* Use all bits in the random value */
1063 buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val);
1071 pw_password(struct userconf * cnf, struct cargs * args, char const * user)
1075 u_char rndbuf[sizeof pwbuf];
1077 switch (cnf->default_password) {
1078 case -1: /* Random password */
1079 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
1080 pw_getrand(rndbuf, l);
1081 for (i = 0; i < l; i++)
1082 pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)];
1086 * We give this information back to the user
1088 if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) {
1089 if (isatty(STDOUT_FILENO))
1090 printf("Password for '%s' is: ", user);
1091 printf("%s\n", pwbuf);
1096 case -2: /* No password at all! */
1099 case 0: /* No login - default */
1103 case 1: /* user's name */
1104 strncpy(pwbuf, user, sizeof pwbuf);
1105 pwbuf[sizeof pwbuf - 1] = '\0';
1108 return pw_pwcrypt(pwbuf);
1113 print_user(struct passwd * pwd, int pretty, int v7)
1116 char buf[_UC_MAXLINE];
1118 fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD);
1123 struct group *grp = GETGRGID(pwd->pw_gid);
1124 char uname[60] = "User &", office[60] = "[None]",
1125 wphone[60] = "[None]", hphone[60] = "[None]";
1126 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
1129 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
1130 strncpy(uname, p, sizeof uname);
1131 uname[sizeof uname - 1] = '\0';
1132 if ((p = strtok(NULL, ",")) != NULL) {
1133 strncpy(office, p, sizeof office);
1134 office[sizeof office - 1] = '\0';
1135 if ((p = strtok(NULL, ",")) != NULL) {
1136 strncpy(wphone, p, sizeof wphone);
1137 wphone[sizeof wphone - 1] = '\0';
1138 if ((p = strtok(NULL, "")) != NULL) {
1139 strncpy(hphone, p, sizeof hphone);
1140 hphone[sizeof hphone - 1] = '\0';
1146 * Handle '&' in gecos field
1148 if ((p = strchr(uname, '&')) != NULL) {
1149 int l = strlen(pwd->pw_name);
1152 memmove(p + l, p + 1, m);
1153 memmove(p, pwd->pw_name, l);
1154 *p = (char) toupper((unsigned char)*p);
1156 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
1157 strftime(acexpire, sizeof acexpire, "%c", tptr);
1158 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
1159 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
1160 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n"
1162 " Home: %-26.26s Class: %s\n"
1163 " Shell: %-26.26s Office: %s\n"
1164 "Work Phone: %-26.26s Home Phone: %s\n"
1165 "Acc Expire: %-26.26s Pwd Expire: %s\n",
1166 pwd->pw_name, (long) pwd->pw_uid,
1167 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
1168 uname, pwd->pw_dir, pwd->pw_class,
1169 pwd->pw_shell, office, wphone, hphone,
1170 acexpire, pwexpire);
1173 while ((grp=GETGRENT()) != NULL)
1176 while (grp->gr_mem[i] != NULL)
1178 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
1180 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
1187 printf("%s", j ? "\n" : "");
1189 return EXIT_SUCCESS;
1193 pw_checkname(u_char *name, int gecos)
1196 u_char const *badchars, *ch, *showtype;
1202 /* See if the name is valid as a gecos (comment) field. */
1204 showtype = "gecos field";
1206 /* See if the name is valid as a userid or group. */
1207 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
1208 showtype = "userid/group name";
1209 /* Userids and groups can not have a leading '-'. */
1215 if (strchr(badchars, *ch) != NULL || *ch < ' ' ||
1220 /* 8-bit characters are only allowed in GECOS fields */
1221 if (!gecos && (*ch & 0x80)) {
1229 * A `$' is allowed as the final character for userids and groups,
1230 * mainly for the benefit of samba.
1232 if (reject && !gecos) {
1233 if (*ch == '$' && *(ch + 1) == '\0') {
1239 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
1240 ? "`%c'" : "0x%02x", *ch);
1241 errx(EX_DATAERR, "invalid character %s at position %d in %s",
1242 showch, (ch - name), showtype);
1244 if (!gecos && (ch - name) > LOGNAMESIZE)
1245 errx(EX_DATAERR, "name too long `%s' (max is %d)", name,
1247 return (char *)name;
1254 DIR *d = opendir("/var/at/jobs");
1259 while ((e = readdir(d)) != NULL) {
1262 if (strncmp(e->d_name, ".lock", 5) != 0 &&
1263 stat(e->d_name, &st) == 0 &&
1264 !S_ISDIR(st.st_mode) &&
1266 char tmp[MAXPATHLEN];
1268 sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
1277 rmskey(char const * name)
1279 static const char etcskey[] = "/etc/skeykeys";
1280 FILE *fp = fopen(etcskey, "r+");
1285 int length = strlen(name);
1287 while (fgets(tmp, sizeof tmp, fp) != NULL) {
1288 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') {
1289 if (fseek(fp, atofs, SEEK_SET) == 0) {
1290 fwrite("#", 1, 1, fp); /* Comment username out */
1297 * If we got an error of any sort, don't update!