]> git.cameronkatri.com Git - pw-darwin.git/blob - pw/pw_user.c
2eec317b5e5b55253d00fb0e887ce6b9ca743048
[pw-darwin.git] / pw / pw_user.c
1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (C) 1996
5 * David L. Nugent. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30 #ifndef lint
31 static const char rcsid[] =
32 "$FreeBSD$";
33 #endif /* not lint */
34
35 #include <sys/param.h>
36 #include <sys/types.h>
37
38 #include <assert.h>
39 #include <ctype.h>
40 #include <dirent.h>
41 #include <err.h>
42 #include <errno.h>
43 #include <fcntl.h>
44 #include <grp.h>
45 #include <pwd.h>
46 #include <libutil.h>
47 #include <login_cap.h>
48 #include <paths.h>
49 #include <string.h>
50 #include <sysexits.h>
51 #include <termios.h>
52 #include <unistd.h>
53
54 #include "pw.h"
55 #include "bitmap.h"
56 #include "psdate.h"
57
58 #define LOGNAMESIZE (MAXLOGNAME-1)
59
60 static char locked_str[] = "*LOCKED*";
61
62 static struct passwd fakeuser = {
63 "nouser",
64 "*",
65 -1,
66 -1,
67 0,
68 "",
69 "User &",
70 "/nonexistent",
71 "/bin/sh",
72 0,
73 0
74 };
75
76 static int print_user(struct passwd *pwd, bool pretty, bool v7);
77 static uid_t pw_uidpolicy(struct userconf *cnf, intmax_t id);
78 static uid_t pw_gidpolicy(struct userconf *cnf, char *grname, char *nam,
79 gid_t prefer, bool dryrun);
80 static char *pw_homepolicy(struct userconf * cnf, char *homedir,
81 const char *user);
82 static char *pw_shellpolicy(struct userconf * cnf);
83 static char *pw_password(struct userconf * cnf, char const * user,
84 bool dryrun);
85 static char *shell_path(char const * path, char *shells[], char *sh);
86 static void rmat(uid_t uid);
87 static void rmopie(char const * name);
88
89 static void
90 mkdir_home_parents(int dfd, const char *dir)
91 {
92 struct stat st;
93 char *dirs, *tmp;
94
95 if (*dir != '/')
96 errx(EX_DATAERR, "invalid base directory for home '%s'", dir);
97
98 dir++;
99
100 if (fstatat(dfd, dir, &st, 0) != -1) {
101 if (S_ISDIR(st.st_mode))
102 return;
103 errx(EX_OSFILE, "root home `/%s' is not a directory", dir);
104 }
105
106 dirs = strdup(dir);
107 if (dirs == NULL)
108 errx(EX_UNAVAILABLE, "out of memory");
109
110 tmp = strrchr(dirs, '/');
111 if (tmp == NULL) {
112 free(dirs);
113 return;
114 }
115 tmp[0] = '\0';
116
117 /*
118 * This is a kludge especially for Joerg :)
119 * If the home directory would be created in the root partition, then
120 * we really create it under /usr which is likely to have more space.
121 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
122 */
123 if (strchr(dirs, '/') == NULL) {
124 asprintf(&tmp, "usr/%s", dirs);
125 if (tmp == NULL)
126 errx(EX_UNAVAILABLE, "out of memory");
127 if (mkdirat(dfd, tmp, _DEF_DIRMODE) != -1 || errno == EEXIST) {
128 fchownat(dfd, tmp, 0, 0, 0);
129 symlinkat(tmp, dfd, dirs);
130 }
131 free(tmp);
132 }
133 tmp = dirs;
134 if (fstatat(dfd, dirs, &st, 0) == -1) {
135 while ((tmp = strchr(tmp + 1, '/')) != NULL) {
136 *tmp = '\0';
137 if (fstatat(dfd, dirs, &st, 0) == -1) {
138 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1)
139 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs);
140 }
141 *tmp = '/';
142 }
143 }
144 if (fstatat(dfd, dirs, &st, 0) == -1) {
145 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1)
146 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs);
147 fchownat(dfd, dirs, 0, 0, 0);
148 }
149
150 free(dirs);
151 }
152
153 static void
154 create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd,
155 const char *skeldir, mode_t homemode, bool update)
156 {
157 int skelfd = -1;
158
159 /* Create home parents directories */
160 mkdir_home_parents(conf.rootfd, pwd->pw_dir);
161
162 if (skeldir != NULL && *skeldir != '\0') {
163 if (*skeldir == '/')
164 skeldir++;
165 skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC);
166 }
167
168 copymkdir(conf.rootfd, pwd->pw_dir, skelfd, homemode, pwd->pw_uid,
169 pwd->pw_gid, 0);
170 pw_log(cnf, update ? M_UPDATE : M_ADD, W_USER, "%s(%ju) home %s made",
171 pwd->pw_name, (uintmax_t)pwd->pw_uid, pwd->pw_dir);
172 }
173
174 static int
175 pw_set_passwd(struct passwd *pwd, int fd, bool precrypted, bool update)
176 {
177 int b, istty;
178 struct termios t, n;
179 login_cap_t *lc;
180 char line[_PASSWORD_LEN+1];
181 char *p;
182
183 if (fd == '-') {
184 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
185 pwd->pw_passwd = "*"; /* No access */
186 return (1);
187 }
188 return (0);
189 }
190
191 if ((istty = isatty(fd))) {
192 if (tcgetattr(fd, &t) == -1)
193 istty = 0;
194 else {
195 n = t;
196 n.c_lflag &= ~(ECHO);
197 tcsetattr(fd, TCSANOW, &n);
198 printf("%s%spassword for user %s:",
199 update ? "new " : "",
200 precrypted ? "encrypted " : "",
201 pwd->pw_name);
202 fflush(stdout);
203 }
204 }
205 b = read(fd, line, sizeof(line) - 1);
206 if (istty) { /* Restore state */
207 tcsetattr(fd, TCSANOW, &t);
208 fputc('\n', stdout);
209 fflush(stdout);
210 }
211
212 if (b < 0)
213 err(EX_IOERR, "-%c file descriptor",
214 precrypted ? 'H' : 'h');
215 line[b] = '\0';
216 if ((p = strpbrk(line, "\r\n")) != NULL)
217 *p = '\0';
218 if (!*line)
219 errx(EX_DATAERR, "empty password read on file descriptor %d",
220 fd);
221 if (precrypted) {
222 if (strchr(line, ':') != NULL)
223 errx(EX_DATAERR, "bad encrypted password");
224 pwd->pw_passwd = strdup(line);
225 } else {
226 lc = login_getpwclass(pwd);
227 if (lc == NULL ||
228 login_setcryptfmt(lc, "sha512", NULL) == NULL)
229 warn("setting crypt(3) format");
230 login_close(lc);
231 pwd->pw_passwd = pw_pwcrypt(line);
232 }
233 return (1);
234 }
235
236 static void
237 perform_chgpwent(const char *name, struct passwd *pwd, char *nispasswd)
238 {
239 int rc;
240 struct passwd *nispwd;
241
242 /* duplicate for nis so that chgpwent is not modifying before NIS */
243 if (nispasswd && *nispasswd == '/')
244 nispwd = pw_dup(pwd);
245
246 rc = chgpwent(name, pwd);
247 if (rc == -1)
248 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name);
249 else if (rc != 0)
250 err(EX_IOERR, "passwd file update");
251
252 if (nispasswd && *nispasswd == '/') {
253 rc = chgnispwent(nispasswd, name, nispwd);
254 if (rc == -1)
255 warn("User '%s' not found in NIS passwd", pwd->pw_name);
256 else if (rc != 0)
257 warn("NIS passwd update");
258 /* NOTE: NIS-only update errors are not fatal */
259 }
260 }
261
262 /*
263 * The M_LOCK and M_UNLOCK functions simply add or remove
264 * a "*LOCKED*" prefix from in front of the password to
265 * prevent it decoding correctly, and therefore prevents
266 * access. Of course, this only prevents access via
267 * password authentication (not ssh, kerberos or any
268 * other method that does not use the UNIX password) but
269 * that is a known limitation.
270 */
271 static int
272 pw_userlock(char *arg1, int mode)
273 {
274 struct passwd *pwd = NULL;
275 char *passtmp = NULL;
276 char *name;
277 bool locked = false;
278 uid_t id = (uid_t)-1;
279
280 if (geteuid() != 0)
281 errx(EX_NOPERM, "you must be root");
282
283 if (arg1 == NULL)
284 errx(EX_DATAERR, "username or id required");
285
286 name = arg1;
287 if (arg1[strspn(name, "0123456789")] == '\0')
288 id = pw_checkid(name, UID_MAX);
289
290 pwd = GETPWNAM(pw_checkname(name, 0));
291 if (pwd == NULL && id != (uid_t)-1) {
292 pwd = GETPWUID(id);
293 if (pwd != NULL)
294 name = pwd->pw_name;
295 }
296 if (pwd == NULL) {
297 if (id == (uid_t)-1)
298 errx(EX_NOUSER, "no such name or uid `%ju'", (uintmax_t) id);
299 errx(EX_NOUSER, "no such user `%s'", name);
300 }
301
302 if (name == NULL)
303 name = pwd->pw_name;
304
305 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0)
306 locked = true;
307 if (mode == M_LOCK && locked)
308 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
309 if (mode == M_UNLOCK && !locked)
310 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
311
312 if (mode == M_LOCK) {
313 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd);
314 if (passtmp == NULL) /* disaster */
315 errx(EX_UNAVAILABLE, "out of memory");
316 pwd->pw_passwd = passtmp;
317 } else {
318 pwd->pw_passwd += sizeof(locked_str)-1;
319 }
320
321 perform_chgpwent(name, pwd, NULL);
322 free(passtmp);
323
324 return (EXIT_SUCCESS);
325 }
326
327 static uid_t
328 pw_uidpolicy(struct userconf * cnf, intmax_t id)
329 {
330 struct passwd *pwd;
331 struct bitmap bm;
332 uid_t uid = (uid_t) - 1;
333
334 /*
335 * Check the given uid, if any
336 */
337 if (id >= 0) {
338 uid = (uid_t) id;
339
340 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate)
341 errx(EX_DATAERR, "uid `%ju' has already been allocated",
342 (uintmax_t)pwd->pw_uid);
343 return (uid);
344 }
345 /*
346 * We need to allocate the next available uid under one of
347 * two policies a) Grab the first unused uid b) Grab the
348 * highest possible unused uid
349 */
350 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
351 * claus^H^H^H^Hheck */
352 cnf->min_uid = 1000;
353 cnf->max_uid = 32000;
354 }
355 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
356
357 /*
358 * Now, let's fill the bitmap from the password file
359 */
360 SETPWENT();
361 while ((pwd = GETPWENT()) != NULL)
362 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
363 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
364 ENDPWENT();
365
366 /*
367 * Then apply the policy, with fallback to reuse if necessary
368 */
369 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
370 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
371
372 /*
373 * Another sanity check
374 */
375 if (uid < cnf->min_uid || uid > cnf->max_uid)
376 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
377 bm_dealloc(&bm);
378 return (uid);
379 }
380
381 static uid_t
382 pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, gid_t prefer, bool dryrun)
383 {
384 struct group *grp;
385 gid_t gid = (uid_t) - 1;
386
387 /*
388 * Check the given gid, if any
389 */
390 SETGRENT();
391 if (grname) {
392 if ((grp = GETGRNAM(grname)) == NULL) {
393 gid = pw_checkid(grname, GID_MAX);
394 grp = GETGRGID(gid);
395 }
396 gid = grp->gr_gid;
397 } else if ((grp = GETGRNAM(nam)) != NULL &&
398 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) {
399 gid = grp->gr_gid; /* Already created? Use it anyway... */
400 } else {
401 intmax_t grid = -1;
402
403 /*
404 * We need to auto-create a group with the user's name. We
405 * can send all the appropriate output to our sister routine
406 * bit first see if we can create a group with gid==uid so we
407 * can keep the user and group ids in sync. We purposely do
408 * NOT check the gid range if we can force the sync. If the
409 * user's name dups an existing group, then the group add
410 * function will happily handle that case for us and exit.
411 */
412 if (GETGRGID(prefer) == NULL)
413 grid = prefer;
414 if (dryrun) {
415 gid = pw_groupnext(cnf, true);
416 } else {
417 if (grid == -1)
418 grid = pw_groupnext(cnf, true);
419 groupadd(cnf, nam, grid, NULL, -1, false, false, false);
420 if ((grp = GETGRNAM(nam)) != NULL)
421 gid = grp->gr_gid;
422 }
423 }
424 ENDGRENT();
425 return (gid);
426 }
427
428 static char *
429 pw_homepolicy(struct userconf * cnf, char *homedir, const char *user)
430 {
431 static char home[128];
432
433 if (homedir)
434 return (homedir);
435
436 if (cnf->home == NULL || *cnf->home == '\0')
437 errx(EX_CONFIG, "no base home directory set");
438 snprintf(home, sizeof(home), "%s/%s", cnf->home, user);
439
440 return (home);
441 }
442
443 static char *
444 shell_path(char const * path, char *shells[], char *sh)
445 {
446 if (sh != NULL && (*sh == '/' || *sh == '\0'))
447 return sh; /* specified full path or forced none */
448 else {
449 char *p;
450 char paths[_UC_MAXLINE];
451
452 /*
453 * We need to search paths
454 */
455 strlcpy(paths, path, sizeof(paths));
456 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
457 int i;
458 static char shellpath[256];
459
460 if (sh != NULL) {
461 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh);
462 if (access(shellpath, X_OK) == 0)
463 return shellpath;
464 } else
465 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
466 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]);
467 if (access(shellpath, X_OK) == 0)
468 return shellpath;
469 }
470 }
471 if (sh == NULL)
472 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
473 errx(EX_CONFIG, "no default shell available or defined");
474 return NULL;
475 }
476 }
477
478 static char *
479 pw_shellpolicy(struct userconf * cnf)
480 {
481
482 return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default);
483 }
484
485 #define SALTSIZE 32
486
487 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./";
488
489 char *
490 pw_pwcrypt(char *password)
491 {
492 int i;
493 char salt[SALTSIZE + 1];
494 char *cryptpw;
495 static char buf[256];
496 size_t pwlen;
497
498 /*
499 * Calculate a salt value
500 */
501 for (i = 0; i < SALTSIZE; i++)
502 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)];
503 salt[SALTSIZE] = '\0';
504
505 cryptpw = crypt(password, salt);
506 if (cryptpw == NULL)
507 errx(EX_CONFIG, "crypt(3) failure");
508 pwlen = strlcpy(buf, cryptpw, sizeof(buf));
509 assert(pwlen < sizeof(buf));
510 return (buf);
511 }
512
513 static char *
514 pw_password(struct userconf * cnf, char const * user, bool dryrun)
515 {
516 int i, l;
517 char pwbuf[32];
518
519 switch (cnf->default_password) {
520 case P_NONE: /* No password at all! */
521 return "";
522 case P_RANDOM: /* Random password */
523 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
524 for (i = 0; i < l; i++)
525 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)];
526 pwbuf[i] = '\0';
527
528 /*
529 * We give this information back to the user
530 */
531 if (conf.fd == -1 && !dryrun) {
532 if (isatty(STDOUT_FILENO))
533 printf("Password for '%s' is: ", user);
534 printf("%s\n", pwbuf);
535 fflush(stdout);
536 }
537 break;
538 case P_YES: /* user's name */
539 strlcpy(pwbuf, user, sizeof(pwbuf));
540 break;
541 case P_NO: /* No login - default */
542 /* FALLTHROUGH */
543 default:
544 return "*";
545 }
546 return pw_pwcrypt(pwbuf);
547 }
548
549 static int
550 print_user(struct passwd * pwd, bool pretty, bool v7)
551 {
552 int j;
553 char *p;
554 struct group *grp = GETGRGID(pwd->pw_gid);
555 char uname[60] = "User &", office[60] = "[None]",
556 wphone[60] = "[None]", hphone[60] = "[None]";
557 char acexpire[32] = "[None]", pwexpire[32] = "[None]";
558 struct tm * tptr;
559
560 if (!pretty) {
561 p = v7 ? pw_make_v7(pwd) : pw_make(pwd);
562 printf("%s\n", p);
563 free(p);
564 return (EXIT_SUCCESS);
565 }
566
567 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
568 strlcpy(uname, p, sizeof(uname));
569 if ((p = strtok(NULL, ",")) != NULL) {
570 strlcpy(office, p, sizeof(office));
571 if ((p = strtok(NULL, ",")) != NULL) {
572 strlcpy(wphone, p, sizeof(wphone));
573 if ((p = strtok(NULL, "")) != NULL) {
574 strlcpy(hphone, p, sizeof(hphone));
575 }
576 }
577 }
578 }
579 /*
580 * Handle '&' in gecos field
581 */
582 if ((p = strchr(uname, '&')) != NULL) {
583 int l = strlen(pwd->pw_name);
584 int m = strlen(p);
585
586 memmove(p + l, p + 1, m);
587 memmove(p, pwd->pw_name, l);
588 *p = (char) toupper((unsigned char)*p);
589 }
590 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL)
591 strftime(acexpire, sizeof acexpire, "%c", tptr);
592 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL)
593 strftime(pwexpire, sizeof pwexpire, "%c", tptr);
594 printf("Login Name: %-15s #%-12ju Group: %-15s #%ju\n"
595 " Full Name: %s\n"
596 " Home: %-26.26s Class: %s\n"
597 " Shell: %-26.26s Office: %s\n"
598 "Work Phone: %-26.26s Home Phone: %s\n"
599 "Acc Expire: %-26.26s Pwd Expire: %s\n",
600 pwd->pw_name, (uintmax_t)pwd->pw_uid,
601 grp ? grp->gr_name : "(invalid)", (uintmax_t)pwd->pw_gid,
602 uname, pwd->pw_dir, pwd->pw_class,
603 pwd->pw_shell, office, wphone, hphone,
604 acexpire, pwexpire);
605 SETGRENT();
606 j = 0;
607 while ((grp=GETGRENT()) != NULL) {
608 int i = 0;
609 if (grp->gr_mem != NULL) {
610 while (grp->gr_mem[i] != NULL) {
611 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) {
612 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name);
613 break;
614 }
615 ++i;
616 }
617 }
618 }
619 ENDGRENT();
620 printf("%s", j ? "\n" : "");
621 return (EXIT_SUCCESS);
622 }
623
624 char *
625 pw_checkname(char *name, int gecos)
626 {
627 char showch[8];
628 const char *badchars, *ch, *showtype;
629 int reject;
630
631 ch = name;
632 reject = 0;
633 if (gecos) {
634 /* See if the name is valid as a gecos (comment) field. */
635 badchars = ":";
636 showtype = "gecos field";
637 } else {
638 /* See if the name is valid as a userid or group. */
639 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\"";
640 showtype = "userid/group name";
641 /* Userids and groups can not have a leading '-'. */
642 if (*ch == '-')
643 reject = 1;
644 }
645 if (!reject) {
646 while (*ch) {
647 if (strchr(badchars, *ch) != NULL ||
648 (!gecos && *ch < ' ') ||
649 *ch == 127) {
650 reject = 1;
651 break;
652 }
653 /* 8-bit characters are only allowed in GECOS fields */
654 if (!gecos && (*ch & 0x80)) {
655 reject = 1;
656 break;
657 }
658 ch++;
659 }
660 }
661 /*
662 * A `$' is allowed as the final character for userids and groups,
663 * mainly for the benefit of samba.
664 */
665 if (reject && !gecos) {
666 if (*ch == '$' && *(ch + 1) == '\0') {
667 reject = 0;
668 ch++;
669 }
670 }
671 if (reject) {
672 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127)
673 ? "`%c'" : "0x%02x", *ch);
674 errx(EX_DATAERR, "invalid character %s at position %td in %s",
675 showch, (ch - name), showtype);
676 }
677 if (!gecos && (ch - name) > LOGNAMESIZE)
678 errx(EX_USAGE, "name too long `%s' (max is %d)", name,
679 LOGNAMESIZE);
680
681 return (name);
682 }
683
684 static void
685 rmat(uid_t uid)
686 {
687 DIR *d = opendir("/var/at/jobs");
688
689 if (d != NULL) {
690 struct dirent *e;
691
692 while ((e = readdir(d)) != NULL) {
693 struct stat st;
694
695 if (strncmp(e->d_name, ".lock", 5) != 0 &&
696 stat(e->d_name, &st) == 0 &&
697 !S_ISDIR(st.st_mode) &&
698 st.st_uid == uid) {
699 char tmp[MAXPATHLEN];
700
701 snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s",
702 e->d_name);
703 system(tmp);
704 }
705 }
706 closedir(d);
707 }
708 }
709
710 static void
711 rmopie(char const * name)
712 {
713 char tmp[1014];
714 FILE *fp;
715 size_t len;
716 long atofs;
717 int fd;
718
719 if ((fd = openat(conf.rootfd, "etc/opiekeys", O_RDWR)) == -1)
720 return;
721
722 fp = fdopen(fd, "r+");
723 len = strlen(name);
724
725 for (atofs = 0; fgets(tmp, sizeof(tmp), fp) != NULL && atofs >= 0;
726 atofs = ftell(fp)) {
727 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') {
728 /* Comment username out */
729 if (fseek(fp, atofs, SEEK_SET) == 0)
730 fwrite("#", 1, 1, fp);
731 break;
732 }
733 }
734 /*
735 * If we got an error of any sort, don't update!
736 */
737 fclose(fp);
738 }
739
740 int
741 pw_user_next(int argc, char **argv, char *name __unused)
742 {
743 struct userconf *cnf = NULL;
744 const char *cfg = NULL;
745 int ch;
746 bool quiet = false;
747 uid_t next;
748
749 while ((ch = getopt(argc, argv, "C:q")) != -1) {
750 switch (ch) {
751 case 'C':
752 cfg = optarg;
753 break;
754 case 'q':
755 quiet = true;
756 break;
757 }
758 }
759
760 if (quiet)
761 freopen(_PATH_DEVNULL, "w", stderr);
762
763 cnf = get_userconfig(cfg);
764
765 next = pw_uidpolicy(cnf, -1);
766
767 printf("%ju:", (uintmax_t)next);
768 pw_groupnext(cnf, quiet);
769
770 return (EXIT_SUCCESS);
771 }
772
773 int
774 pw_user_show(int argc, char **argv, char *arg1)
775 {
776 struct passwd *pwd = NULL;
777 char *name = NULL;
778 intmax_t id = -1;
779 int ch;
780 bool all = false;
781 bool pretty = false;
782 bool force = false;
783 bool v7 = false;
784 bool quiet = false;
785
786 if (arg1 != NULL) {
787 if (arg1[strspn(arg1, "0123456789")] == '\0')
788 id = pw_checkid(arg1, UID_MAX);
789 else
790 name = arg1;
791 }
792
793 while ((ch = getopt(argc, argv, "C:qn:u:FPa7")) != -1) {
794 switch (ch) {
795 case 'C':
796 /* ignore compatibility */
797 break;
798 case 'q':
799 quiet = true;
800 break;
801 case 'n':
802 name = optarg;
803 break;
804 case 'u':
805 id = pw_checkid(optarg, UID_MAX);
806 break;
807 case 'F':
808 force = true;
809 break;
810 case 'P':
811 pretty = true;
812 break;
813 case 'a':
814 all = true;
815 break;
816 case '7':
817 v7 = true;
818 break;
819 }
820 }
821
822 if (quiet)
823 freopen(_PATH_DEVNULL, "w", stderr);
824
825 if (all) {
826 SETPWENT();
827 while ((pwd = GETPWENT()) != NULL)
828 print_user(pwd, pretty, v7);
829 ENDPWENT();
830 return (EXIT_SUCCESS);
831 }
832
833 if (id < 0 && name == NULL)
834 errx(EX_DATAERR, "username or id required");
835
836 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
837 if (pwd == NULL) {
838 if (force) {
839 pwd = &fakeuser;
840 } else {
841 if (name == NULL)
842 errx(EX_NOUSER, "no such uid `%ju'",
843 (uintmax_t) id);
844 errx(EX_NOUSER, "no such user `%s'", name);
845 }
846 }
847
848 return (print_user(pwd, pretty, v7));
849 }
850
851 int
852 pw_user_del(int argc, char **argv, char *arg1)
853 {
854 struct userconf *cnf = NULL;
855 struct passwd *pwd = NULL;
856 struct group *gr, *grp;
857 char *name = NULL;
858 char grname[MAXLOGNAME];
859 char *nispasswd = NULL;
860 char file[MAXPATHLEN];
861 char home[MAXPATHLEN];
862 const char *cfg = NULL;
863 struct stat st;
864 intmax_t id = -1;
865 int ch, rc;
866 bool nis = false;
867 bool deletehome = false;
868 bool quiet = false;
869
870 if (arg1 != NULL) {
871 if (arg1[strspn(arg1, "0123456789")] == '\0')
872 id = pw_checkid(arg1, UID_MAX);
873 else
874 name = arg1;
875 }
876
877 while ((ch = getopt(argc, argv, "C:qn:u:rYy:")) != -1) {
878 switch (ch) {
879 case 'C':
880 cfg = optarg;
881 break;
882 case 'q':
883 quiet = true;
884 break;
885 case 'n':
886 name = optarg;
887 break;
888 case 'u':
889 id = pw_checkid(optarg, UID_MAX);
890 break;
891 case 'r':
892 deletehome = true;
893 break;
894 case 'y':
895 nispasswd = optarg;
896 break;
897 case 'Y':
898 nis = true;
899 break;
900 }
901 }
902
903 if (quiet)
904 freopen(_PATH_DEVNULL, "w", stderr);
905
906 if (id < 0 && name == NULL)
907 errx(EX_DATAERR, "username or id required");
908
909 cnf = get_userconfig(cfg);
910
911 if (nispasswd == NULL)
912 nispasswd = cnf->nispasswd;
913
914 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
915 if (pwd == NULL) {
916 if (name == NULL)
917 errx(EX_NOUSER, "no such uid `%ju'", (uintmax_t) id);
918 errx(EX_NOUSER, "no such user `%s'", name);
919 }
920
921 if (PWF._altdir == PWF_REGULAR &&
922 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
923 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
924 if (!nis && nispasswd && *nispasswd != '/')
925 errx(EX_NOUSER, "Cannot remove NIS user `%s'",
926 name);
927 } else {
928 errx(EX_NOUSER, "Cannot remove non local user `%s'",
929 name);
930 }
931 }
932
933 id = pwd->pw_uid;
934 if (name == NULL)
935 name = pwd->pw_name;
936
937 if (strcmp(pwd->pw_name, "root") == 0)
938 errx(EX_DATAERR, "cannot remove user 'root'");
939
940 /* Remove opie record from /etc/opiekeys */
941 if (PWALTDIR() != PWF_ALT)
942 rmopie(pwd->pw_name);
943
944 if (!PWALTDIR()) {
945 /* Remove crontabs */
946 snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name);
947 if (access(file, F_OK) == 0) {
948 snprintf(file, sizeof(file), "crontab -u %s -r",
949 pwd->pw_name);
950 system(file);
951 }
952 }
953
954 /*
955 * Save these for later, since contents of pwd may be
956 * invalidated by deletion
957 */
958 snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name);
959 strlcpy(home, pwd->pw_dir, sizeof(home));
960 gr = GETGRGID(pwd->pw_gid);
961 if (gr != NULL)
962 strlcpy(grname, gr->gr_name, LOGNAMESIZE);
963 else
964 grname[0] = '\0';
965
966 rc = delpwent(pwd);
967 if (rc == -1)
968 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name);
969 else if (rc != 0)
970 err(EX_IOERR, "passwd update");
971
972 if (nis && nispasswd && *nispasswd=='/') {
973 rc = delnispwent(nispasswd, name);
974 if (rc == -1)
975 warnx("WARNING: user '%s' does not exist in NIS passwd",
976 pwd->pw_name);
977 else if (rc != 0)
978 warn("WARNING: NIS passwd update");
979 }
980
981 grp = GETGRNAM(name);
982 if (grp != NULL &&
983 (grp->gr_mem == NULL || *grp->gr_mem == NULL) &&
984 strcmp(name, grname) == 0)
985 delgrent(GETGRNAM(name));
986 SETGRENT();
987 while ((grp = GETGRENT()) != NULL) {
988 int i, j;
989 char group[MAXLOGNAME];
990 if (grp->gr_mem == NULL)
991 continue;
992
993 for (i = 0; grp->gr_mem[i] != NULL; i++) {
994 if (strcmp(grp->gr_mem[i], name) != 0)
995 continue;
996
997 for (j = i; grp->gr_mem[j] != NULL; j++)
998 grp->gr_mem[j] = grp->gr_mem[j+1];
999 strlcpy(group, grp->gr_name, MAXLOGNAME);
1000 chggrent(group, grp);
1001 }
1002 }
1003 ENDGRENT();
1004
1005 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) account removed", name,
1006 (uintmax_t)id);
1007
1008 /* Remove mail file */
1009 if (PWALTDIR() != PWF_ALT)
1010 unlinkat(conf.rootfd, file + 1, 0);
1011
1012 /* Remove at jobs */
1013 if (!PWALTDIR() && getpwuid(id) == NULL)
1014 rmat(id);
1015
1016 /* Remove home directory and contents */
1017 if (PWALTDIR() != PWF_ALT && deletehome && *home == '/' &&
1018 GETPWUID(id) == NULL &&
1019 fstatat(conf.rootfd, home + 1, &st, 0) != -1) {
1020 rm_r(conf.rootfd, home, id);
1021 pw_log(cnf, M_DELETE, W_USER, "%s(%ju) home '%s' %s"
1022 "removed", name, (uintmax_t)id, home,
1023 fstatat(conf.rootfd, home + 1, &st, 0) == -1 ? "" : "not "
1024 "completely ");
1025 }
1026
1027 return (EXIT_SUCCESS);
1028 }
1029
1030 int
1031 pw_user_lock(int argc, char **argv, char *arg1)
1032 {
1033 int ch;
1034
1035 while ((ch = getopt(argc, argv, "Cq")) != -1) {
1036 switch (ch) {
1037 case 'C':
1038 case 'q':
1039 /* compatibility */
1040 break;
1041 }
1042 }
1043
1044 return (pw_userlock(arg1, M_LOCK));
1045 }
1046
1047 int
1048 pw_user_unlock(int argc, char **argv, char *arg1)
1049 {
1050 int ch;
1051
1052 while ((ch = getopt(argc, argv, "Cq")) != -1) {
1053 switch (ch) {
1054 case 'C':
1055 case 'q':
1056 /* compatibility */
1057 break;
1058 }
1059 }
1060
1061 return (pw_userlock(arg1, M_UNLOCK));
1062 }
1063
1064 static struct group *
1065 group_from_name_or_id(char *name)
1066 {
1067 const char *errstr = NULL;
1068 struct group *grp;
1069 uintmax_t id;
1070
1071 if ((grp = GETGRNAM(name)) == NULL) {
1072 id = strtounum(name, 0, GID_MAX, &errstr);
1073 if (errstr)
1074 errx(EX_NOUSER, "group `%s' does not exist", name);
1075 grp = GETGRGID(id);
1076 if (grp == NULL)
1077 errx(EX_NOUSER, "group `%s' does not exist", name);
1078 }
1079
1080 return (grp);
1081 }
1082
1083 static void
1084 split_groups(StringList **groups, char *groupsstr)
1085 {
1086 struct group *grp;
1087 char *p;
1088 char tok[] = ", \t";
1089
1090 if (*groups == NULL)
1091 *groups = sl_init();
1092 for (p = strtok(groupsstr, tok); p != NULL; p = strtok(NULL, tok)) {
1093 grp = group_from_name_or_id(p);
1094 sl_add(*groups, newstr(grp->gr_name));
1095 }
1096 }
1097
1098 static void
1099 validate_grname(struct userconf *cnf, char *group)
1100 {
1101 struct group *grp;
1102
1103 if (group == NULL || *group == '\0') {
1104 cnf->default_group = "";
1105 return;
1106 }
1107 grp = group_from_name_or_id(group);
1108 cnf->default_group = newstr(grp->gr_name);
1109 }
1110
1111 static mode_t
1112 validate_mode(char *mode)
1113 {
1114 mode_t m;
1115 void *set;
1116
1117 if ((set = setmode(mode)) == NULL)
1118 errx(EX_DATAERR, "invalid directory creation mode '%s'", mode);
1119
1120 m = getmode(set, _DEF_DIRMODE);
1121 free(set);
1122 return (m);
1123 }
1124
1125 static long
1126 validate_expire(char *str, int opt)
1127 {
1128 if (!numerics(str))
1129 errx(EX_DATAERR, "-%c argument must be numeric "
1130 "when setting defaults: %s", (char)opt, str);
1131 return strtol(str, NULL, 0);
1132 }
1133
1134 static void
1135 mix_config(struct userconf *cmdcnf, struct userconf *cfg)
1136 {
1137
1138 if (cmdcnf->default_password < 0)
1139 cmdcnf->default_password = cfg->default_password;
1140 if (cmdcnf->reuse_uids == 0)
1141 cmdcnf->reuse_uids = cfg->reuse_uids;
1142 if (cmdcnf->reuse_gids == 0)
1143 cmdcnf->reuse_gids = cfg->reuse_gids;
1144 if (cmdcnf->nispasswd == NULL)
1145 cmdcnf->nispasswd = cfg->nispasswd;
1146 if (cmdcnf->dotdir == NULL)
1147 cmdcnf->dotdir = cfg->dotdir;
1148 if (cmdcnf->newmail == NULL)
1149 cmdcnf->newmail = cfg->newmail;
1150 if (cmdcnf->logfile == NULL)
1151 cmdcnf->logfile = cfg->logfile;
1152 if (cmdcnf->home == NULL)
1153 cmdcnf->home = cfg->home;
1154 if (cmdcnf->homemode == 0)
1155 cmdcnf->homemode = cfg->homemode;
1156 if (cmdcnf->shelldir == NULL)
1157 cmdcnf->shelldir = cfg->shelldir;
1158 if (cmdcnf->shells == NULL)
1159 cmdcnf->shells = cfg->shells;
1160 if (cmdcnf->shell_default == NULL)
1161 cmdcnf->shell_default = cfg->shell_default;
1162 if (cmdcnf->default_group == NULL)
1163 cmdcnf->default_group = cfg->default_group;
1164 if (cmdcnf->groups == NULL)
1165 cmdcnf->groups = cfg->groups;
1166 if (cmdcnf->default_class == NULL)
1167 cmdcnf->default_class = cfg->default_class;
1168 if (cmdcnf->min_uid == 0)
1169 cmdcnf->min_uid = cfg->min_uid;
1170 if (cmdcnf->max_uid == 0)
1171 cmdcnf->max_uid = cfg->max_uid;
1172 if (cmdcnf->min_gid == 0)
1173 cmdcnf->min_gid = cfg->min_gid;
1174 if (cmdcnf->max_gid == 0)
1175 cmdcnf->max_gid = cfg->max_gid;
1176 if (cmdcnf->expire_days < 0)
1177 cmdcnf->expire_days = cfg->expire_days;
1178 if (cmdcnf->password_days < 0)
1179 cmdcnf->password_days = cfg->password_days;
1180 }
1181
1182 int
1183 pw_user_add(int argc, char **argv, char *arg1)
1184 {
1185 struct userconf *cnf, *cmdcnf;
1186 struct passwd *pwd;
1187 struct group *grp;
1188 struct stat st;
1189 char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y";
1190 char line[_PASSWORD_LEN+1], path[MAXPATHLEN];
1191 char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname;
1192 char *default_passwd, *name, *p;
1193 const char *cfg = NULL;
1194 login_cap_t *lc;
1195 FILE *pfp, *fp;
1196 intmax_t id = -1;
1197 time_t now;
1198 int rc, ch, fd = -1;
1199 size_t i;
1200 bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf;
1201
1202 dryrun = nis = pretty = quiet = createhome = precrypted = false;
1203 genconf = false;
1204 gecos = homedir = skel = userid = groupid = default_passwd = NULL;
1205 grname = name = NULL;
1206
1207 if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL)
1208 err(EXIT_FAILURE, "calloc()");
1209
1210 cmdcnf->default_password = cmdcnf->expire_days = cmdcnf->password_days = -1;
1211 now = time(NULL);
1212
1213 if (arg1 != NULL) {
1214 if (arg1[strspn(arg1, "0123456789")] == '\0')
1215 id = pw_checkid(arg1, UID_MAX);
1216 else
1217 name = pw_checkname(arg1, 0);
1218 }
1219
1220 while ((ch = getopt(argc, argv, args)) != -1) {
1221 switch (ch) {
1222 case 'C':
1223 cfg = optarg;
1224 break;
1225 case 'q':
1226 quiet = true;
1227 break;
1228 case 'n':
1229 name = pw_checkname(optarg, 0);
1230 break;
1231 case 'u':
1232 userid = optarg;
1233 break;
1234 case 'c':
1235 gecos = pw_checkname(optarg, 1);
1236 break;
1237 case 'd':
1238 homedir = optarg;
1239 break;
1240 case 'e':
1241 if (genconf)
1242 cmdcnf->expire_days = validate_expire(optarg, ch);
1243 else
1244 cmdcnf->expire_days = parse_date(now, optarg);
1245 break;
1246 case 'p':
1247 if (genconf)
1248 cmdcnf->password_days = validate_expire(optarg, ch);
1249 else
1250 cmdcnf->password_days = parse_date(now, optarg);
1251 break;
1252 case 'g':
1253 validate_grname(cmdcnf, optarg);
1254 grname = optarg;
1255 break;
1256 case 'G':
1257 split_groups(&cmdcnf->groups, optarg);
1258 break;
1259 case 'm':
1260 createhome = true;
1261 break;
1262 case 'M':
1263 cmdcnf->homemode = validate_mode(optarg);
1264 break;
1265 case 'k':
1266 walk = skel = optarg;
1267 if (*walk == '/')
1268 walk++;
1269 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1270 errx(EX_OSFILE, "skeleton `%s' does not "
1271 "exists", skel);
1272 if (!S_ISDIR(st.st_mode))
1273 errx(EX_OSFILE, "skeleton `%s' is not a "
1274 "directory", skel);
1275 cmdcnf->dotdir = skel;
1276 break;
1277 case 's':
1278 cmdcnf->shell_default = optarg;
1279 break;
1280 case 'o':
1281 conf.checkduplicate = false;
1282 break;
1283 case 'L':
1284 cmdcnf->default_class = pw_checkname(optarg, 0);
1285 break;
1286 case 'i':
1287 groupid = optarg;
1288 break;
1289 case 'w':
1290 default_passwd = optarg;
1291 break;
1292 case 'H':
1293 if (fd != -1)
1294 errx(EX_USAGE, "'-h' and '-H' are mutually "
1295 "exclusive options");
1296 fd = pw_checkfd(optarg);
1297 precrypted = true;
1298 if (fd == '-')
1299 errx(EX_USAGE, "-H expects a file descriptor");
1300 break;
1301 case 'h':
1302 if (fd != -1)
1303 errx(EX_USAGE, "'-h' and '-H' are mutually "
1304 "exclusive options");
1305 fd = pw_checkfd(optarg);
1306 break;
1307 case 'D':
1308 genconf = true;
1309 break;
1310 case 'b':
1311 cmdcnf->home = optarg;
1312 break;
1313 case 'N':
1314 dryrun = true;
1315 break;
1316 case 'P':
1317 pretty = true;
1318 break;
1319 case 'y':
1320 cmdcnf->nispasswd = optarg;
1321 break;
1322 case 'Y':
1323 nis = true;
1324 break;
1325 }
1326 }
1327
1328 if (geteuid() != 0 && ! dryrun)
1329 errx(EX_NOPERM, "you must be root");
1330
1331 if (quiet)
1332 freopen(_PATH_DEVNULL, "w", stderr);
1333
1334 cnf = get_userconfig(cfg);
1335
1336 mix_config(cmdcnf, cnf);
1337 if (default_passwd)
1338 cmdcnf->default_password = passwd_val(default_passwd,
1339 cnf->default_password);
1340 if (genconf) {
1341 if (name != NULL)
1342 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
1343 if (userid != NULL) {
1344 if ((p = strtok(userid, ", \t")) != NULL)
1345 cmdcnf->min_uid = pw_checkid(p, UID_MAX);
1346 if (cmdcnf->min_uid == 0)
1347 cmdcnf->min_uid = 1000;
1348 if ((p = strtok(NULL, " ,\t")) != NULL)
1349 cmdcnf->max_uid = pw_checkid(p, UID_MAX);
1350 if (cmdcnf->max_uid == 0)
1351 cmdcnf->max_uid = 32000;
1352 }
1353 if (groupid != NULL) {
1354 if ((p = strtok(groupid, ", \t")) != NULL)
1355 cmdcnf->min_gid = pw_checkid(p, GID_MAX);
1356 if (cmdcnf->min_gid == 0)
1357 cmdcnf->min_gid = 1000;
1358 if ((p = strtok(NULL, " ,\t")) != NULL)
1359 cmdcnf->max_gid = pw_checkid(p, GID_MAX);
1360 if (cmdcnf->max_gid == 0)
1361 cmdcnf->max_gid = 32000;
1362 }
1363 if (write_userconfig(cmdcnf, cfg))
1364 return (EXIT_SUCCESS);
1365 err(EX_IOERR, "config update");
1366 }
1367
1368 if (userid)
1369 id = pw_checkid(userid, UID_MAX);
1370 if (id < 0 && name == NULL)
1371 errx(EX_DATAERR, "user name or id required");
1372
1373 if (name == NULL)
1374 errx(EX_DATAERR, "login name required");
1375
1376 if (GETPWNAM(name) != NULL)
1377 errx(EX_DATAERR, "login name `%s' already exists", name);
1378
1379 if (!grname)
1380 grname = cmdcnf->default_group;
1381
1382 pwd = &fakeuser;
1383 pwd->pw_name = name;
1384 pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : "";
1385 pwd->pw_uid = pw_uidpolicy(cmdcnf, id);
1386 pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name,
1387 (gid_t) pwd->pw_uid, dryrun);
1388
1389 /* cmdcnf->password_days and cmdcnf->expire_days hold unixtime here */
1390 if (cmdcnf->password_days > 0)
1391 pwd->pw_change = cmdcnf->password_days;
1392 if (cmdcnf->expire_days > 0)
1393 pwd->pw_expire = cmdcnf->expire_days;
1394
1395 pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name);
1396 pwd->pw_shell = pw_shellpolicy(cmdcnf);
1397 lc = login_getpwclass(pwd);
1398 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1399 warn("setting crypt(3) format");
1400 login_close(lc);
1401 pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun);
1402 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1403 warnx("WARNING: new account `%s' has a uid of 0 "
1404 "(superuser access!)", pwd->pw_name);
1405 if (gecos)
1406 pwd->pw_gecos = gecos;
1407
1408 if (fd != -1)
1409 pw_set_passwd(pwd, fd, precrypted, false);
1410
1411 if (dryrun)
1412 return (print_user(pwd, pretty, false));
1413
1414 if ((rc = addpwent(pwd)) != 0) {
1415 if (rc == -1)
1416 errx(EX_IOERR, "user '%s' already exists",
1417 pwd->pw_name);
1418 else if (rc != 0)
1419 err(EX_IOERR, "passwd file update");
1420 }
1421 if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') {
1422 printf("%s\n", cmdcnf->nispasswd);
1423 rc = addnispwent(cmdcnf->nispasswd, pwd);
1424 if (rc == -1)
1425 warnx("User '%s' already exists in NIS passwd",
1426 pwd->pw_name);
1427 else if (rc != 0)
1428 warn("NIS passwd update");
1429 /* NOTE: we treat NIS-only update errors as non-fatal */
1430 }
1431
1432 if (cmdcnf->groups != NULL) {
1433 for (i = 0; i < cmdcnf->groups->sl_cur; i++) {
1434 grp = GETGRNAM(cmdcnf->groups->sl_str[i]);
1435 grp = gr_add(grp, pwd->pw_name);
1436 /*
1437 * grp can only be NULL in 2 cases:
1438 * - the new member is already a member
1439 * - a problem with memory occurs
1440 * in both cases we want to skip now.
1441 */
1442 if (grp == NULL)
1443 continue;
1444 chggrent(grp->gr_name, grp);
1445 free(grp);
1446 }
1447 }
1448
1449 pwd = GETPWNAM(name);
1450 if (pwd == NULL)
1451 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1452
1453 grp = GETGRGID(pwd->pw_gid);
1454 pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1455 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1456 grp ? grp->gr_name : "unknown",
1457 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1458 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1459
1460 /*
1461 * let's touch and chown the user's mail file. This is not
1462 * strictly necessary under BSD with a 0755 maildir but it also
1463 * doesn't hurt anything to create the empty mailfile
1464 */
1465 if (PWALTDIR() != PWF_ALT) {
1466 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR,
1467 pwd->pw_name);
1468 /* Preserve contents & mtime */
1469 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600));
1470 fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid,
1471 AT_SYMLINK_NOFOLLOW);
1472 }
1473
1474 /*
1475 * Let's create and populate the user's home directory. Note
1476 * that this also `works' for editing users if -m is used, but
1477 * existing files will *not* be overwritten.
1478 */
1479 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1480 *pwd->pw_dir == '/' && pwd->pw_dir[1])
1481 create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir,
1482 cmdcnf->homemode, false);
1483
1484 if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail &&
1485 (fp = fopen(cnf->newmail, "r")) != NULL) {
1486 if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL)
1487 warn("sendmail");
1488 else {
1489 fprintf(pfp, "From: root\n" "To: %s\n"
1490 "Subject: Welcome!\n\n", pwd->pw_name);
1491 while (fgets(line, sizeof(line), fp) != NULL) {
1492 /* Do substitutions? */
1493 fputs(line, pfp);
1494 }
1495 pclose(pfp);
1496 pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent",
1497 pwd->pw_name, (uintmax_t)pwd->pw_uid);
1498 }
1499 fclose(fp);
1500 }
1501
1502 if (nis && nis_update() == 0)
1503 pw_log(cnf, M_ADD, W_USER, "NIS maps updated");
1504
1505 return (EXIT_SUCCESS);
1506 }
1507
1508 int
1509 pw_user_mod(int argc, char **argv, char *arg1)
1510 {
1511 struct userconf *cnf;
1512 struct passwd *pwd;
1513 struct group *grp;
1514 StringList *groups = NULL;
1515 char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:";
1516 const char *cfg = NULL;
1517 char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell;
1518 char *passwd, *class, *nispasswd;
1519 login_cap_t *lc;
1520 struct stat st;
1521 intmax_t id = -1;
1522 int ch, fd = -1;
1523 size_t i, j;
1524 bool quiet, createhome, pretty, dryrun, nis, edited;
1525 bool precrypted;
1526 mode_t homemode = 0;
1527 time_t expire_time, password_time, now;
1528
1529 expire_time = password_time = -1;
1530 gecos = homedir = grname = name = newname = skel = shell =NULL;
1531 passwd = NULL;
1532 class = nispasswd = NULL;
1533 quiet = createhome = pretty = dryrun = nis = precrypted = false;
1534 edited = false;
1535 now = time(NULL);
1536
1537 if (arg1 != NULL) {
1538 if (arg1[strspn(arg1, "0123456789")] == '\0')
1539 id = pw_checkid(arg1, UID_MAX);
1540 else
1541 name = arg1;
1542 }
1543
1544 while ((ch = getopt(argc, argv, args)) != -1) {
1545 switch (ch) {
1546 case 'C':
1547 cfg = optarg;
1548 break;
1549 case 'q':
1550 quiet = true;
1551 break;
1552 case 'n':
1553 name = optarg;
1554 break;
1555 case 'u':
1556 id = pw_checkid(optarg, UID_MAX);
1557 break;
1558 case 'c':
1559 gecos = pw_checkname(optarg, 1);
1560 break;
1561 case 'd':
1562 homedir = optarg;
1563 break;
1564 case 'e':
1565 expire_time = parse_date(now, optarg);
1566 break;
1567 case 'p':
1568 password_time = parse_date(now, optarg);
1569 break;
1570 case 'g':
1571 group_from_name_or_id(optarg);
1572 grname = optarg;
1573 break;
1574 case 'G':
1575 split_groups(&groups, optarg);
1576 break;
1577 case 'm':
1578 createhome = true;
1579 break;
1580 case 'M':
1581 homemode = validate_mode(optarg);
1582 break;
1583 case 'l':
1584 newname = optarg;
1585 break;
1586 case 'k':
1587 walk = skel = optarg;
1588 if (*walk == '/')
1589 walk++;
1590 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1591 errx(EX_OSFILE, "skeleton `%s' does not "
1592 "exists", skel);
1593 if (!S_ISDIR(st.st_mode))
1594 errx(EX_OSFILE, "skeleton `%s' is not a "
1595 "directory", skel);
1596 break;
1597 case 's':
1598 shell = optarg;
1599 break;
1600 case 'w':
1601 passwd = optarg;
1602 break;
1603 case 'L':
1604 class = pw_checkname(optarg, 0);
1605 break;
1606 case 'H':
1607 if (fd != -1)
1608 errx(EX_USAGE, "'-h' and '-H' are mutually "
1609 "exclusive options");
1610 fd = pw_checkfd(optarg);
1611 precrypted = true;
1612 if (fd == '-')
1613 errx(EX_USAGE, "-H expects a file descriptor");
1614 break;
1615 case 'h':
1616 if (fd != -1)
1617 errx(EX_USAGE, "'-h' and '-H' are mutually "
1618 "exclusive options");
1619 fd = pw_checkfd(optarg);
1620 break;
1621 case 'N':
1622 dryrun = true;
1623 break;
1624 case 'P':
1625 pretty = true;
1626 break;
1627 case 'y':
1628 nispasswd = optarg;
1629 break;
1630 case 'Y':
1631 nis = true;
1632 break;
1633 }
1634 }
1635
1636 if (geteuid() != 0 && ! dryrun)
1637 errx(EX_NOPERM, "you must be root");
1638
1639 if (quiet)
1640 freopen(_PATH_DEVNULL, "w", stderr);
1641
1642 cnf = get_userconfig(cfg);
1643
1644 if (id < 0 && name == NULL)
1645 errx(EX_DATAERR, "username or id required");
1646
1647 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
1648 if (pwd == NULL) {
1649 if (name == NULL)
1650 errx(EX_NOUSER, "no such uid `%ju'",
1651 (uintmax_t) id);
1652 errx(EX_NOUSER, "no such user `%s'", name);
1653 }
1654
1655 if (name == NULL)
1656 name = pwd->pw_name;
1657
1658 if (nis && nispasswd == NULL)
1659 nispasswd = cnf->nispasswd;
1660
1661 if (PWF._altdir == PWF_REGULAR &&
1662 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
1663 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
1664 if (!nis && nispasswd && *nispasswd != '/')
1665 errx(EX_NOUSER, "Cannot modify NIS user `%s'",
1666 name);
1667 } else {
1668 errx(EX_NOUSER, "Cannot modify non local user `%s'",
1669 name);
1670 }
1671 }
1672
1673 if (newname) {
1674 if (strcmp(pwd->pw_name, "root") == 0)
1675 errx(EX_DATAERR, "can't rename `root' account");
1676 if (strcmp(pwd->pw_name, newname) != 0) {
1677 pwd->pw_name = pw_checkname(newname, 0);
1678 edited = true;
1679 }
1680 }
1681
1682 if (id >= 0 && pwd->pw_uid != id) {
1683 pwd->pw_uid = id;
1684 edited = true;
1685 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
1686 errx(EX_DATAERR, "can't change uid of `root' account");
1687 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1688 warnx("WARNING: account `%s' will have a uid of 0 "
1689 "(superuser access!)", pwd->pw_name);
1690 }
1691
1692 if (grname && pwd->pw_uid != 0) {
1693 grp = GETGRNAM(grname);
1694 if (grp == NULL)
1695 grp = GETGRGID(pw_checkid(grname, GID_MAX));
1696 if (grp->gr_gid != pwd->pw_gid) {
1697 pwd->pw_gid = grp->gr_gid;
1698 edited = true;
1699 }
1700 }
1701
1702
1703 if (password_time >= 0 && pwd->pw_change != password_time) {
1704 pwd->pw_change = password_time;
1705 edited = true;
1706 }
1707
1708 if (expire_time >= 0 && pwd->pw_expire != expire_time) {
1709 pwd->pw_expire = expire_time;
1710 edited = true;
1711 }
1712
1713 if (shell) {
1714 shell = shell_path(cnf->shelldir, cnf->shells, shell);
1715 if (shell == NULL)
1716 shell = "";
1717 if (strcmp(shell, pwd->pw_shell) != 0) {
1718 pwd->pw_shell = shell;
1719 edited = true;
1720 }
1721 }
1722
1723 if (class && strcmp(pwd->pw_class, class) != 0) {
1724 pwd->pw_class = class;
1725 edited = true;
1726 }
1727
1728 if (homedir && strcmp(pwd->pw_dir, homedir) != 0) {
1729 pwd->pw_dir = homedir;
1730 edited = true;
1731 if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) {
1732 if (!createhome)
1733 warnx("WARNING: home `%s' does not exist",
1734 pwd->pw_dir);
1735 } else if (!S_ISDIR(st.st_mode)) {
1736 warnx("WARNING: home `%s' is not a directory",
1737 pwd->pw_dir);
1738 }
1739 }
1740
1741 if (passwd && conf.fd == -1) {
1742 lc = login_getpwclass(pwd);
1743 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1744 warn("setting crypt(3) format");
1745 login_close(lc);
1746 cnf->default_password = passwd_val(passwd,
1747 cnf->default_password);
1748 pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun);
1749 edited = true;
1750 }
1751
1752 if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) {
1753 pwd->pw_gecos = gecos;
1754 edited = true;
1755 }
1756
1757 if (fd != -1)
1758 edited = pw_set_passwd(pwd, fd, precrypted, true);
1759
1760 if (dryrun)
1761 return (print_user(pwd, pretty, false));
1762
1763 if (edited) /* Only updated this if required */
1764 perform_chgpwent(name, pwd, nis ? nispasswd : NULL);
1765 /* Now perform the needed changes concern groups */
1766 if (groups != NULL) {
1767 /* Delete User from groups using old name */
1768 SETGRENT();
1769 while ((grp = GETGRENT()) != NULL) {
1770 if (grp->gr_mem == NULL)
1771 continue;
1772 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1773 if (strcmp(grp->gr_mem[i] , name) != 0)
1774 continue;
1775 for (j = i; grp->gr_mem[j] != NULL ; j++)
1776 grp->gr_mem[j] = grp->gr_mem[j+1];
1777 chggrent(grp->gr_name, grp);
1778 break;
1779 }
1780 }
1781 ENDGRENT();
1782 /* Add the user to the needed groups */
1783 for (i = 0; i < groups->sl_cur; i++) {
1784 grp = GETGRNAM(groups->sl_str[i]);
1785 grp = gr_add(grp, pwd->pw_name);
1786 if (grp == NULL)
1787 continue;
1788 chggrent(grp->gr_name, grp);
1789 free(grp);
1790 }
1791 }
1792 /* In case of rename we need to walk over the different groups */
1793 if (newname) {
1794 SETGRENT();
1795 while ((grp = GETGRENT()) != NULL) {
1796 if (grp->gr_mem == NULL)
1797 continue;
1798 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1799 if (strcmp(grp->gr_mem[i], name) != 0)
1800 continue;
1801 grp->gr_mem[i] = newname;
1802 chggrent(grp->gr_name, grp);
1803 break;
1804 }
1805 }
1806 }
1807
1808 /* go get a current version of pwd */
1809 if (newname)
1810 name = newname;
1811 pwd = GETPWNAM(name);
1812 if (pwd == NULL)
1813 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1814 grp = GETGRGID(pwd->pw_gid);
1815 pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1816 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1817 grp ? grp->gr_name : "unknown",
1818 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1819 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1820
1821 /*
1822 * Let's create and populate the user's home directory. Note
1823 * that this also `works' for editing users if -m is used, but
1824 * existing files will *not* be overwritten.
1825 */
1826 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1827 *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
1828 if (!skel)
1829 skel = cnf->dotdir;
1830 if (homemode == 0)
1831 homemode = cnf->homemode;
1832 create_and_populate_homedir(cnf, pwd, skel, homemode, true);
1833 }
1834
1835 if (nis && nis_update() == 0)
1836 pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated");
1837
1838 return (EXIT_SUCCESS);
1839 }