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pw usermod: Properly deal with empty secondary group lists (-G '')
[pw-darwin.git] / pw / pw_user.c
1 /*-
2 * Copyright (C) 1996
3 * David L. Nugent. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 *
26 */
27
28 #ifndef lint
29 static const char rcsid[] =
30 "$FreeBSD$";
31 #endif /* not lint */
32
33 #include <sys/param.h>
34 #include <sys/types.h>
35
36 #include <assert.h>
37 #include <ctype.h>
38 #include <dirent.h>
39 #include <err.h>
40 #include <errno.h>
41 #include <fcntl.h>
42 #include <grp.h>
43 #include <pwd.h>
44 #include <libutil.h>
45 #include <login_cap.h>
46 #include <paths.h>
47 #include <string.h>
48 #include <sysexits.h>
49 #include <termios.h>
50 #include <unistd.h>
51
52 #include "pw.h"
53 #include "bitmap.h"
54 #include "psdate.h"
55
56 #define LOGNAMESIZE (MAXLOGNAME-1)
57
58 static char locked_str[] = "*LOCKED*";
59
60 static struct passwd fakeuser = {
61 "nouser",
62 "*",
63 -1,
64 -1,
65 0,
66 "",
67 "User &",
68 "/nonexistent",
69 "/bin/sh",
70 0,
71 0
72 };
73
74 static int print_user(struct passwd *pwd, bool pretty, bool v7);
75 static uid_t pw_uidpolicy(struct userconf *cnf, intmax_t id);
76 static uid_t pw_gidpolicy(struct userconf *cnf, char *grname, char *nam,
77 gid_t prefer, bool dryrun);
78 static char *pw_homepolicy(struct userconf * cnf, char *homedir,
79 const char *user);
80 static char *pw_shellpolicy(struct userconf * cnf);
81 static char *pw_password(struct userconf * cnf, char const * user,
82 bool dryrun);
83 static char *shell_path(char const * path, char *shells[], char *sh);
84 static void rmat(uid_t uid);
85 static void rmopie(char const * name);
86
87 static void
88 mkdir_home_parents(int dfd, const char *dir)
89 {
90 struct stat st;
91 char *dirs, *tmp;
92
93 if (*dir != '/')
94 errx(EX_DATAERR, "invalid base directory for home '%s'", dir);
95
96 dir++;
97
98 if (fstatat(dfd, dir, &st, 0) != -1) {
99 if (S_ISDIR(st.st_mode))
100 return;
101 errx(EX_OSFILE, "root home `/%s' is not a directory", dir);
102 }
103
104 dirs = strdup(dir);
105 if (dirs == NULL)
106 errx(EX_UNAVAILABLE, "out of memory");
107
108 tmp = strrchr(dirs, '/');
109 if (tmp == NULL) {
110 free(dirs);
111 return;
112 }
113 tmp[0] = '\0';
114
115 /*
116 * This is a kludge especially for Joerg :)
117 * If the home directory would be created in the root partition, then
118 * we really create it under /usr which is likely to have more space.
119 * But we create a symlink from cnf->home -> "/usr" -> cnf->home
120 */
121 if (strchr(dirs, '/') == NULL) {
122 asprintf(&tmp, "usr/%s", dirs);
123 if (tmp == NULL)
124 errx(EX_UNAVAILABLE, "out of memory");
125 if (mkdirat(dfd, tmp, _DEF_DIRMODE) != -1 || errno == EEXIST) {
126 fchownat(dfd, tmp, 0, 0, 0);
127 symlinkat(tmp, dfd, dirs);
128 }
129 free(tmp);
130 }
131 tmp = dirs;
132 if (fstatat(dfd, dirs, &st, 0) == -1) {
133 while ((tmp = strchr(tmp + 1, '/')) != NULL) {
134 *tmp = '\0';
135 if (fstatat(dfd, dirs, &st, 0) == -1) {
136 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1)
137 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs);
138 }
139 *tmp = '/';
140 }
141 }
142 if (fstatat(dfd, dirs, &st, 0) == -1) {
143 if (mkdirat(dfd, dirs, _DEF_DIRMODE) == -1)
144 err(EX_OSFILE, "'%s' (root home parent) is not a directory", dirs);
145 fchownat(dfd, dirs, 0, 0, 0);
146 }
147
148 free(dirs);
149 }
150
151 static void
152 create_and_populate_homedir(struct userconf *cnf, struct passwd *pwd,
153 const char *skeldir, mode_t homemode, bool update)
154 {
155 int skelfd = -1;
156
157 /* Create home parents directories */
158 mkdir_home_parents(conf.rootfd, pwd->pw_dir);
159
160 if (skeldir != NULL && *skeldir != '\0') {
161 if (*skeldir == '/')
162 skeldir++;
163 skelfd = openat(conf.rootfd, skeldir, O_DIRECTORY|O_CLOEXEC);
164 }
165
166 copymkdir(conf.rootfd, pwd->pw_dir, skelfd, homemode, pwd->pw_uid,
167 pwd->pw_gid, 0);
168 pw_log(cnf, update ? M_UPDATE : M_ADD, W_USER, "%s(%ju) home %s made",
169 pwd->pw_name, (uintmax_t)pwd->pw_uid, pwd->pw_dir);
170 }
171
172 static int
173 pw_set_passwd(struct passwd *pwd, int fd, bool precrypted, bool update)
174 {
175 int b, istty;
176 struct termios t, n;
177 login_cap_t *lc;
178 char line[_PASSWORD_LEN+1];
179 char *p;
180
181 if (fd == '-') {
182 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') {
183 pwd->pw_passwd = "*"; /* No access */
184 return (1);
185 }
186 return (0);
187 }
188
189 if ((istty = isatty(fd))) {
190 if (tcgetattr(fd, &t) == -1)
191 istty = 0;
192 else {
193 n = t;
194 n.c_lflag &= ~(ECHO);
195 tcsetattr(fd, TCSANOW, &n);
196 printf("%s%spassword for user %s:",
197 update ? "new " : "",
198 precrypted ? "encrypted " : "",
199 pwd->pw_name);
200 fflush(stdout);
201 }
202 }
203 b = read(fd, line, sizeof(line) - 1);
204 if (istty) { /* Restore state */
205 tcsetattr(fd, TCSANOW, &t);
206 fputc('\n', stdout);
207 fflush(stdout);
208 }
209
210 if (b < 0)
211 err(EX_IOERR, "-%c file descriptor",
212 precrypted ? 'H' : 'h');
213 line[b] = '\0';
214 if ((p = strpbrk(line, "\r\n")) != NULL)
215 *p = '\0';
216 if (!*line)
217 errx(EX_DATAERR, "empty password read on file descriptor %d",
218 fd);
219 if (precrypted) {
220 if (strchr(line, ':') != NULL)
221 errx(EX_DATAERR, "bad encrypted password");
222 pwd->pw_passwd = strdup(line);
223 } else {
224 lc = login_getpwclass(pwd);
225 if (lc == NULL ||
226 login_setcryptfmt(lc, "sha512", NULL) == NULL)
227 warn("setting crypt(3) format");
228 login_close(lc);
229 pwd->pw_passwd = pw_pwcrypt(line);
230 }
231 return (1);
232 }
233
234 static void
235 perform_chgpwent(const char *name, struct passwd *pwd, char *nispasswd)
236 {
237 int rc;
238 struct passwd *nispwd;
239
240 /* duplicate for nis so that chgpwent is not modifying before NIS */
241 if (nispasswd && *nispasswd == '/')
242 nispwd = pw_dup(pwd);
243
244 rc = chgpwent(name, pwd);
245 if (rc == -1)
246 errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name);
247 else if (rc != 0)
248 err(EX_IOERR, "passwd file update");
249
250 if (nispasswd && *nispasswd == '/') {
251 rc = chgnispwent(nispasswd, name, nispwd);
252 if (rc == -1)
253 warn("User '%s' not found in NIS passwd", pwd->pw_name);
254 else if (rc != 0)
255 warn("NIS passwd update");
256 /* NOTE: NIS-only update errors are not fatal */
257 }
258 }
259
260 /*
261 * The M_LOCK and M_UNLOCK functions simply add or remove
262 * a "*LOCKED*" prefix from in front of the password to
263 * prevent it decoding correctly, and therefore prevents
264 * access. Of course, this only prevents access via
265 * password authentication (not ssh, kerberos or any
266 * other method that does not use the UNIX password) but
267 * that is a known limitation.
268 */
269 static int
270 pw_userlock(char *arg1, int mode)
271 {
272 struct passwd *pwd = NULL;
273 char *passtmp = NULL;
274 char *name;
275 bool locked = false;
276 uid_t id = (uid_t)-1;
277
278 if (geteuid() != 0)
279 errx(EX_NOPERM, "you must be root");
280
281 if (arg1 == NULL)
282 errx(EX_DATAERR, "username or id required");
283
284 name = arg1;
285 if (arg1[strspn(name, "0123456789")] == '\0')
286 id = pw_checkid(name, UID_MAX);
287
288 pwd = GETPWNAM(pw_checkname(name, 0));
289 if (pwd == NULL && id != (uid_t)-1) {
290 pwd = GETPWUID(id);
291 if (pwd != NULL)
292 name = pwd->pw_name;
293 }
294 if (pwd == NULL) {
295 if (id == (uid_t)-1)
296 errx(EX_NOUSER, "no such name or uid `%ju'", (uintmax_t) id);
297 errx(EX_NOUSER, "no such user `%s'", name);
298 }
299
300 if (name == NULL)
301 name = pwd->pw_name;
302
303 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0)
304 locked = true;
305 if (mode == M_LOCK && locked)
306 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name);
307 if (mode == M_UNLOCK && !locked)
308 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name);
309
310 if (mode == M_LOCK) {
311 asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd);
312 if (passtmp == NULL) /* disaster */
313 errx(EX_UNAVAILABLE, "out of memory");
314 pwd->pw_passwd = passtmp;
315 } else {
316 pwd->pw_passwd += sizeof(locked_str)-1;
317 }
318
319 perform_chgpwent(name, pwd, NULL);
320 free(passtmp);
321
322 return (EXIT_SUCCESS);
323 }
324
325 static uid_t
326 pw_uidpolicy(struct userconf * cnf, intmax_t id)
327 {
328 struct passwd *pwd;
329 struct bitmap bm;
330 uid_t uid = (uid_t) - 1;
331
332 /*
333 * Check the given uid, if any
334 */
335 if (id >= 0) {
336 uid = (uid_t) id;
337
338 if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate)
339 errx(EX_DATAERR, "uid `%ju' has already been allocated",
340 (uintmax_t)pwd->pw_uid);
341 return (uid);
342 }
343 /*
344 * We need to allocate the next available uid under one of
345 * two policies a) Grab the first unused uid b) Grab the
346 * highest possible unused uid
347 */
348 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
349 * claus^H^H^H^Hheck */
350 cnf->min_uid = 1000;
351 cnf->max_uid = 32000;
352 }
353 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
354
355 /*
356 * Now, let's fill the bitmap from the password file
357 */
358 SETPWENT();
359 while ((pwd = GETPWENT()) != NULL)
360 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid)
361 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
362 ENDPWENT();
363
364 /*
365 * Then apply the policy, with fallback to reuse if necessary
366 */
367 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
368 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
369
370 /*
371 * Another sanity check
372 */
373 if (uid < cnf->min_uid || uid > cnf->max_uid)
374 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used");
375 bm_dealloc(&bm);
376 return (uid);
377 }
378
379 static uid_t
380 pw_gidpolicy(struct userconf *cnf, char *grname, char *nam, gid_t prefer, bool dryrun)
381 {
382 struct group *grp;
383 gid_t gid = (uid_t) - 1;
384
385 /*
386 * Check the given gid, if any
387 */
388 SETGRENT();
389 if (grname) {
390 if ((grp = GETGRNAM(grname)) == NULL) {
391 gid = pw_checkid(grname, GID_MAX);
392 grp = GETGRGID(gid);
393 }
394 gid = grp->gr_gid;
395 } else if ((grp = GETGRNAM(nam)) != NULL &&
396 (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) {
397 gid = grp->gr_gid; /* Already created? Use it anyway... */
398 } else {
399 intmax_t grid = -1;
400
401 /*
402 * We need to auto-create a group with the user's name. We
403 * can send all the appropriate output to our sister routine
404 * bit first see if we can create a group with gid==uid so we
405 * can keep the user and group ids in sync. We purposely do
406 * NOT check the gid range if we can force the sync. If the
407 * user's name dups an existing group, then the group add
408 * function will happily handle that case for us and exit.
409 */
410 if (GETGRGID(prefer) == NULL)
411 grid = prefer;
412 if (dryrun) {
413 gid = pw_groupnext(cnf, true);
414 } else {
415 if (grid == -1)
416 grid = pw_groupnext(cnf, true);
417 groupadd(cnf, nam, grid, NULL, -1, false, false, false);
418 if ((grp = GETGRNAM(nam)) != NULL)
419 gid = grp->gr_gid;
420 }
421 }
422 ENDGRENT();
423 return (gid);
424 }
425
426 static char *
427 pw_homepolicy(struct userconf * cnf, char *homedir, const char *user)
428 {
429 static char home[128];
430
431 if (homedir)
432 return (homedir);
433
434 if (cnf->home == NULL || *cnf->home == '\0')
435 errx(EX_CONFIG, "no base home directory set");
436 snprintf(home, sizeof(home), "%s/%s", cnf->home, user);
437
438 return (home);
439 }
440
441 static char *
442 shell_path(char const * path, char *shells[], char *sh)
443 {
444 if (sh != NULL && (*sh == '/' || *sh == '\0'))
445 return sh; /* specified full path or forced none */
446 else {
447 char *p;
448 char paths[_UC_MAXLINE];
449
450 /*
451 * We need to search paths
452 */
453 strlcpy(paths, path, sizeof(paths));
454 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
455 int i;
456 static char shellpath[256];
457
458 if (sh != NULL) {
459 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh);
460 if (access(shellpath, X_OK) == 0)
461 return shellpath;
462 } else
463 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
464 snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]);
465 if (access(shellpath, X_OK) == 0)
466 return shellpath;
467 }
468 }
469 if (sh == NULL)
470 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh);
471 errx(EX_CONFIG, "no default shell available or defined");
472 return NULL;
473 }
474 }
475
476 static char *
477 pw_shellpolicy(struct userconf * cnf)
478 {
479
480 return shell_path(cnf->shelldir, cnf->shells, cnf->shell_default);
481 }
482
483 #define SALTSIZE 32
484
485 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./";
486
487 char *
488 pw_pwcrypt(char *password)
489 {
490 int i;
491 char salt[SALTSIZE + 1];
492 char *cryptpw;
493 static char buf[256];
494 size_t pwlen;
495
496 /*
497 * Calculate a salt value
498 */
499 for (i = 0; i < SALTSIZE; i++)
500 salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)];
501 salt[SALTSIZE] = '\0';
502
503 cryptpw = crypt(password, salt);
504 if (cryptpw == NULL)
505 errx(EX_CONFIG, "crypt(3) failure");
506 pwlen = strlcpy(buf, cryptpw, sizeof(buf));
507 assert(pwlen < sizeof(buf));
508 return (buf);
509 }
510
511 static char *
512 pw_password(struct userconf * cnf, char const * user, bool dryrun)
513 {
514 int i, l;
515 char pwbuf[32];
516
517 switch (cnf->default_password) {
518 case -1: /* Random password */
519 l = (arc4random() % 8 + 8); /* 8 - 16 chars */
520 for (i = 0; i < l; i++)
521 pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)];
522 pwbuf[i] = '\0';
523
524 /*
525 * We give this information back to the user
526 */
527 if (conf.fd == -1 && !dryrun) {
528 if (isatty(STDOUT_FILENO))
529 printf("Password for '%s' is: ", user);
530 printf("%s\n", pwbuf);
531 fflush(stdout);
532 }
533 break;
534
535 case -2: /* No password at all! */
536 return "";
537
538 case 0: /* No login - default */
539 default:
540 return "*";
541
542 case 1: /* user's name */
543 strlcpy(pwbuf, user, sizeof(pwbuf));
544 break;
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 int fd;
716 size_t len;
717 off_t atofs = 0;
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 while (fgets(tmp, sizeof(tmp), fp) != NULL) {
726 if (strncmp(name, tmp, len) == 0 && tmp[len]==' ') {
727 /* Comment username out */
728 if (fseek(fp, atofs, SEEK_SET) == 0)
729 fwrite("#", 1, 1, fp);
730 break;
731 }
732 atofs = ftell(fp);
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 void
1126 mix_config(struct userconf *cmdcnf, struct userconf *cfg)
1127 {
1128
1129 if (cmdcnf->default_password == 0)
1130 cmdcnf->default_password = cfg->default_password;
1131 if (cmdcnf->reuse_uids == 0)
1132 cmdcnf->reuse_uids = cfg->reuse_uids;
1133 if (cmdcnf->reuse_gids == 0)
1134 cmdcnf->reuse_gids = cfg->reuse_gids;
1135 if (cmdcnf->nispasswd == NULL)
1136 cmdcnf->nispasswd = cfg->nispasswd;
1137 if (cmdcnf->dotdir == NULL)
1138 cmdcnf->dotdir = cfg->dotdir;
1139 if (cmdcnf->newmail == NULL)
1140 cmdcnf->newmail = cfg->newmail;
1141 if (cmdcnf->logfile == NULL)
1142 cmdcnf->logfile = cfg->logfile;
1143 if (cmdcnf->home == NULL)
1144 cmdcnf->home = cfg->home;
1145 if (cmdcnf->homemode == 0)
1146 cmdcnf->homemode = cfg->homemode;
1147 if (cmdcnf->shelldir == NULL)
1148 cmdcnf->shelldir = cfg->shelldir;
1149 if (cmdcnf->shells == NULL)
1150 cmdcnf->shells = cfg->shells;
1151 if (cmdcnf->shell_default == NULL)
1152 cmdcnf->shell_default = cfg->shell_default;
1153 if (cmdcnf->default_group == NULL)
1154 cmdcnf->default_group = cfg->default_group;
1155 if (cmdcnf->groups == NULL)
1156 cmdcnf->groups = cfg->groups;
1157 if (cmdcnf->default_class == NULL)
1158 cmdcnf->default_class = cfg->default_class;
1159 if (cmdcnf->min_uid == 0)
1160 cmdcnf->min_uid = cfg->min_uid;
1161 if (cmdcnf->max_uid == 0)
1162 cmdcnf->max_uid = cfg->max_uid;
1163 if (cmdcnf->min_gid == 0)
1164 cmdcnf->min_gid = cfg->min_gid;
1165 if (cmdcnf->max_gid == 0)
1166 cmdcnf->max_gid = cfg->max_gid;
1167 if (cmdcnf->expire_days == 0)
1168 cmdcnf->expire_days = cfg->expire_days;
1169 if (cmdcnf->password_days == 0)
1170 cmdcnf->password_days = cfg->password_days;
1171 }
1172
1173 int
1174 pw_user_add(int argc, char **argv, char *arg1)
1175 {
1176 struct userconf *cnf, *cmdcnf;
1177 struct passwd *pwd;
1178 struct group *grp;
1179 struct stat st;
1180 char args[] = "C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y";
1181 char line[_PASSWORD_LEN+1], path[MAXPATHLEN];
1182 char *gecos, *homedir, *skel, *walk, *userid, *groupid, *grname;
1183 char *default_passwd, *name, *p;
1184 const char *cfg = NULL;
1185 login_cap_t *lc;
1186 FILE *pfp, *fp;
1187 intmax_t id = -1;
1188 time_t now;
1189 int rc, ch, fd = -1;
1190 size_t i;
1191 bool dryrun, nis, pretty, quiet, createhome, precrypted, genconf;
1192
1193 dryrun = nis = pretty = quiet = createhome = precrypted = false;
1194 genconf = false;
1195 gecos = homedir = skel = userid = groupid = default_passwd = NULL;
1196 grname = name = NULL;
1197
1198 if ((cmdcnf = calloc(1, sizeof(struct userconf))) == NULL)
1199 err(EXIT_FAILURE, "calloc()");
1200
1201 if (arg1 != NULL) {
1202 if (arg1[strspn(arg1, "0123456789")] == '\0')
1203 id = pw_checkid(arg1, UID_MAX);
1204 else
1205 name = arg1;
1206 }
1207
1208 while ((ch = getopt(argc, argv, args)) != -1) {
1209 switch (ch) {
1210 case 'C':
1211 cfg = optarg;
1212 break;
1213 case 'q':
1214 quiet = true;
1215 break;
1216 case 'n':
1217 name = optarg;
1218 break;
1219 case 'u':
1220 userid = optarg;
1221 break;
1222 case 'c':
1223 gecos = pw_checkname(optarg, 1);
1224 break;
1225 case 'd':
1226 homedir = optarg;
1227 break;
1228 case 'e':
1229 now = time(NULL);
1230 cmdcnf->expire_days = parse_date(now, optarg);
1231 break;
1232 case 'p':
1233 now = time(NULL);
1234 cmdcnf->password_days = parse_date(now, optarg);
1235 break;
1236 case 'g':
1237 validate_grname(cmdcnf, optarg);
1238 grname = optarg;
1239 break;
1240 case 'G':
1241 split_groups(&cmdcnf->groups, optarg);
1242 break;
1243 case 'm':
1244 createhome = true;
1245 break;
1246 case 'M':
1247 cmdcnf->homemode = validate_mode(optarg);
1248 break;
1249 case 'k':
1250 walk = skel = optarg;
1251 if (*walk == '/')
1252 walk++;
1253 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1254 errx(EX_OSFILE, "skeleton `%s' does not "
1255 "exists", skel);
1256 if (!S_ISDIR(st.st_mode))
1257 errx(EX_OSFILE, "skeleton `%s' is not a "
1258 "directory", skel);
1259 cmdcnf->dotdir = skel;
1260 break;
1261 case 's':
1262 cmdcnf->shell_default = optarg;
1263 break;
1264 case 'o':
1265 conf.checkduplicate = false;
1266 break;
1267 case 'L':
1268 cmdcnf->default_class = pw_checkname(optarg, 0);
1269 break;
1270 case 'i':
1271 groupid = optarg;
1272 break;
1273 case 'w':
1274 default_passwd = optarg;
1275 break;
1276 case 'H':
1277 if (fd != -1)
1278 errx(EX_USAGE, "'-h' and '-H' are mutually "
1279 "exclusive options");
1280 fd = pw_checkfd(optarg);
1281 precrypted = true;
1282 if (fd == '-')
1283 errx(EX_USAGE, "-H expects a file descriptor");
1284 break;
1285 case 'h':
1286 if (fd != -1)
1287 errx(EX_USAGE, "'-h' and '-H' are mutually "
1288 "exclusive options");
1289 fd = pw_checkfd(optarg);
1290 break;
1291 case 'D':
1292 genconf = true;
1293 break;
1294 case 'b':
1295 cmdcnf->home = optarg;
1296 break;
1297 case 'N':
1298 dryrun = true;
1299 break;
1300 case 'P':
1301 pretty = true;
1302 break;
1303 case 'y':
1304 cmdcnf->nispasswd = optarg;
1305 break;
1306 case 'Y':
1307 nis = true;
1308 break;
1309 }
1310 }
1311
1312 if (geteuid() != 0 && ! dryrun)
1313 errx(EX_NOPERM, "you must be root");
1314
1315 if (quiet)
1316 freopen(_PATH_DEVNULL, "w", stderr);
1317
1318 cnf = get_userconfig(cfg);
1319
1320 mix_config(cmdcnf, cnf);
1321 if (default_passwd)
1322 cmdcnf->default_password = passwd_val(default_passwd,
1323 cnf->default_password);
1324 if (genconf) {
1325 if (name != NULL)
1326 errx(EX_DATAERR, "can't combine `-D' with `-n name'");
1327 if (userid != NULL) {
1328 if ((p = strtok(userid, ", \t")) != NULL)
1329 cmdcnf->min_uid = pw_checkid(p, UID_MAX);
1330 if (cmdcnf->min_uid == 0)
1331 cmdcnf->min_uid = 1000;
1332 if ((p = strtok(NULL, " ,\t")) != NULL)
1333 cmdcnf->max_uid = pw_checkid(p, UID_MAX);
1334 if (cmdcnf->max_uid == 0)
1335 cmdcnf->max_uid = 32000;
1336 }
1337 if (groupid != NULL) {
1338 if ((p = strtok(groupid, ", \t")) != NULL)
1339 cmdcnf->min_gid = pw_checkid(p, GID_MAX);
1340 if (cmdcnf->min_gid == 0)
1341 cmdcnf->min_gid = 1000;
1342 if ((p = strtok(NULL, " ,\t")) != NULL)
1343 cmdcnf->max_gid = pw_checkid(p, GID_MAX);
1344 if (cmdcnf->max_gid == 0)
1345 cmdcnf->max_gid = 32000;
1346 }
1347 if (write_userconfig(cmdcnf, cfg))
1348 return (EXIT_SUCCESS);
1349 err(EX_IOERR, "config update");
1350 }
1351
1352 if (userid)
1353 id = pw_checkid(userid, UID_MAX);
1354 if (id < 0 && name == NULL)
1355 errx(EX_DATAERR, "user name or id required");
1356
1357 if (name == NULL)
1358 errx(EX_DATAERR, "login name required");
1359
1360 if (GETPWNAM(name) != NULL)
1361 errx(EX_DATAERR, "login name `%s' already exists", name);
1362
1363 if (!grname)
1364 grname = cmdcnf->default_group;
1365
1366 pwd = &fakeuser;
1367 pwd->pw_name = name;
1368 pwd->pw_class = cmdcnf->default_class ? cmdcnf->default_class : "";
1369 pwd->pw_uid = pw_uidpolicy(cmdcnf, id);
1370 pwd->pw_gid = pw_gidpolicy(cnf, grname, pwd->pw_name,
1371 (gid_t) pwd->pw_uid, dryrun);
1372 pwd->pw_change = cmdcnf->password_days;
1373 pwd->pw_expire = cmdcnf->expire_days;
1374 pwd->pw_dir = pw_homepolicy(cmdcnf, homedir, pwd->pw_name);
1375 pwd->pw_shell = pw_shellpolicy(cmdcnf);
1376 lc = login_getpwclass(pwd);
1377 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1378 warn("setting crypt(3) format");
1379 login_close(lc);
1380 pwd->pw_passwd = pw_password(cmdcnf, pwd->pw_name, dryrun);
1381 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1382 warnx("WARNING: new account `%s' has a uid of 0 "
1383 "(superuser access!)", pwd->pw_name);
1384 if (gecos)
1385 pwd->pw_gecos = gecos;
1386
1387 if (fd != -1)
1388 pw_set_passwd(pwd, fd, precrypted, false);
1389
1390 if (dryrun)
1391 return (print_user(pwd, pretty, false));
1392
1393 if ((rc = addpwent(pwd)) != 0) {
1394 if (rc == -1)
1395 errx(EX_IOERR, "user '%s' already exists",
1396 pwd->pw_name);
1397 else if (rc != 0)
1398 err(EX_IOERR, "passwd file update");
1399 }
1400 if (nis && cmdcnf->nispasswd && *cmdcnf->nispasswd == '/') {
1401 printf("%s\n", cmdcnf->nispasswd);
1402 rc = addnispwent(cmdcnf->nispasswd, pwd);
1403 if (rc == -1)
1404 warnx("User '%s' already exists in NIS passwd",
1405 pwd->pw_name);
1406 else if (rc != 0)
1407 warn("NIS passwd update");
1408 /* NOTE: we treat NIS-only update errors as non-fatal */
1409 }
1410
1411 if (cmdcnf->groups != NULL) {
1412 for (i = 0; i < cmdcnf->groups->sl_cur; i++) {
1413 grp = GETGRNAM(cmdcnf->groups->sl_str[i]);
1414 grp = gr_add(grp, pwd->pw_name);
1415 /*
1416 * grp can only be NULL in 2 cases:
1417 * - the new member is already a member
1418 * - a problem with memory occurs
1419 * in both cases we want to skip now.
1420 */
1421 if (grp == NULL)
1422 continue;
1423 chggrent(grp->gr_name, grp);
1424 free(grp);
1425 }
1426 }
1427
1428 pwd = GETPWNAM(name);
1429 if (pwd == NULL)
1430 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1431
1432 grp = GETGRGID(pwd->pw_gid);
1433 pw_log(cnf, M_ADD, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1434 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1435 grp ? grp->gr_name : "unknown",
1436 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1437 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1438
1439 /*
1440 * let's touch and chown the user's mail file. This is not
1441 * strictly necessary under BSD with a 0755 maildir but it also
1442 * doesn't hurt anything to create the empty mailfile
1443 */
1444 if (PWALTDIR() != PWF_ALT) {
1445 snprintf(path, sizeof(path), "%s/%s", _PATH_MAILDIR,
1446 pwd->pw_name);
1447 /* Preserve contents & mtime */
1448 close(openat(conf.rootfd, path +1, O_RDWR | O_CREAT, 0600));
1449 fchownat(conf.rootfd, path + 1, pwd->pw_uid, pwd->pw_gid,
1450 AT_SYMLINK_NOFOLLOW);
1451 }
1452
1453 /*
1454 * Let's create and populate the user's home directory. Note
1455 * that this also `works' for editing users if -m is used, but
1456 * existing files will *not* be overwritten.
1457 */
1458 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1459 *pwd->pw_dir == '/' && pwd->pw_dir[1])
1460 create_and_populate_homedir(cmdcnf, pwd, cmdcnf->dotdir,
1461 cmdcnf->homemode, false);
1462
1463 if (!PWALTDIR() && cmdcnf->newmail && *cmdcnf->newmail &&
1464 (fp = fopen(cnf->newmail, "r")) != NULL) {
1465 if ((pfp = popen(_PATH_SENDMAIL " -t", "w")) == NULL)
1466 warn("sendmail");
1467 else {
1468 fprintf(pfp, "From: root\n" "To: %s\n"
1469 "Subject: Welcome!\n\n", pwd->pw_name);
1470 while (fgets(line, sizeof(line), fp) != NULL) {
1471 /* Do substitutions? */
1472 fputs(line, pfp);
1473 }
1474 pclose(pfp);
1475 pw_log(cnf, M_ADD, W_USER, "%s(%ju) new user mail sent",
1476 pwd->pw_name, (uintmax_t)pwd->pw_uid);
1477 }
1478 fclose(fp);
1479 }
1480
1481 if (nis && nis_update() == 0)
1482 pw_log(cnf, M_ADD, W_USER, "NIS maps updated");
1483
1484 return (EXIT_SUCCESS);
1485 }
1486
1487 int
1488 pw_user_mod(int argc, char **argv, char *arg1)
1489 {
1490 struct userconf *cnf;
1491 struct passwd *pwd;
1492 struct group *grp;
1493 StringList *groups = NULL;
1494 char args[] = "C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:NPYy:";
1495 const char *cfg = NULL;
1496 char *gecos, *homedir, *grname, *name, *newname, *walk, *skel, *shell;
1497 char *passwd, *class, *nispasswd;
1498 login_cap_t *lc;
1499 struct stat st;
1500 intmax_t id = -1;
1501 int ch, fd = -1;
1502 size_t i, j;
1503 bool quiet, createhome, pretty, dryrun, nis, edited;
1504 bool precrypted;
1505 mode_t homemode = 0;
1506 time_t expire_days, password_days, now;
1507
1508 expire_days = password_days = -1;
1509 gecos = homedir = grname = name = newname = skel = shell =NULL;
1510 passwd = NULL;
1511 class = nispasswd = NULL;
1512 quiet = createhome = pretty = dryrun = nis = precrypted = false;
1513 edited = false;
1514
1515 if (arg1 != NULL) {
1516 if (arg1[strspn(arg1, "0123456789")] == '\0')
1517 id = pw_checkid(arg1, UID_MAX);
1518 else
1519 name = arg1;
1520 }
1521
1522 while ((ch = getopt(argc, argv, args)) != -1) {
1523 switch (ch) {
1524 case 'C':
1525 cfg = optarg;
1526 break;
1527 case 'q':
1528 quiet = true;
1529 break;
1530 case 'n':
1531 name = optarg;
1532 break;
1533 case 'u':
1534 id = pw_checkid(optarg, UID_MAX);
1535 break;
1536 case 'c':
1537 gecos = pw_checkname(optarg, 1);
1538 break;
1539 case 'd':
1540 homedir = optarg;
1541 break;
1542 case 'e':
1543 now = time(NULL);
1544 expire_days = parse_date(now, optarg);
1545 break;
1546 case 'p':
1547 now = time(NULL);
1548 password_days = parse_date(now, optarg);
1549 break;
1550 case 'g':
1551 group_from_name_or_id(optarg);
1552 grname = optarg;
1553 break;
1554 case 'G':
1555 split_groups(&groups, optarg);
1556 break;
1557 case 'm':
1558 createhome = true;
1559 break;
1560 case 'M':
1561 homemode = validate_mode(optarg);
1562 break;
1563 case 'l':
1564 newname = optarg;
1565 break;
1566 case 'k':
1567 walk = skel = optarg;
1568 if (*walk == '/')
1569 walk++;
1570 if (fstatat(conf.rootfd, walk, &st, 0) == -1)
1571 errx(EX_OSFILE, "skeleton `%s' does not "
1572 "exists", skel);
1573 if (!S_ISDIR(st.st_mode))
1574 errx(EX_OSFILE, "skeleton `%s' is not a "
1575 "directory", skel);
1576 break;
1577 case 's':
1578 shell = optarg;
1579 break;
1580 case 'w':
1581 passwd = optarg;
1582 break;
1583 case 'L':
1584 class = pw_checkname(optarg, 0);
1585 break;
1586 case 'H':
1587 if (fd != -1)
1588 errx(EX_USAGE, "'-h' and '-H' are mutually "
1589 "exclusive options");
1590 fd = pw_checkfd(optarg);
1591 precrypted = true;
1592 if (fd == '-')
1593 errx(EX_USAGE, "-H expects a file descriptor");
1594 break;
1595 case 'h':
1596 if (fd != -1)
1597 errx(EX_USAGE, "'-h' and '-H' are mutually "
1598 "exclusive options");
1599 fd = pw_checkfd(optarg);
1600 break;
1601 case 'N':
1602 dryrun = true;
1603 break;
1604 case 'P':
1605 pretty = true;
1606 break;
1607 case 'y':
1608 nispasswd = optarg;
1609 break;
1610 case 'Y':
1611 nis = true;
1612 break;
1613 }
1614 }
1615
1616 if (geteuid() != 0 && ! dryrun)
1617 errx(EX_NOPERM, "you must be root");
1618
1619 if (quiet)
1620 freopen(_PATH_DEVNULL, "w", stderr);
1621
1622 cnf = get_userconfig(cfg);
1623
1624 if (id < 0 && name == NULL)
1625 errx(EX_DATAERR, "username or id required");
1626
1627 pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id);
1628 if (pwd == NULL) {
1629 if (name == NULL)
1630 errx(EX_NOUSER, "no such uid `%ju'",
1631 (uintmax_t) id);
1632 errx(EX_NOUSER, "no such user `%s'", name);
1633 }
1634
1635 if (name == NULL)
1636 name = pwd->pw_name;
1637
1638 if (nis && nispasswd == NULL)
1639 nispasswd = cnf->nispasswd;
1640
1641 if (PWF._altdir == PWF_REGULAR &&
1642 ((pwd->pw_fields & _PWF_SOURCE) != _PWF_FILES)) {
1643 if ((pwd->pw_fields & _PWF_SOURCE) == _PWF_NIS) {
1644 if (!nis && nispasswd && *nispasswd != '/')
1645 errx(EX_NOUSER, "Cannot modify NIS user `%s'",
1646 name);
1647 } else {
1648 errx(EX_NOUSER, "Cannot modify non local user `%s'",
1649 name);
1650 }
1651 }
1652
1653 if (newname) {
1654 if (strcmp(pwd->pw_name, "root") == 0)
1655 errx(EX_DATAERR, "can't rename `root' account");
1656 if (strcmp(pwd->pw_name, newname) != 0) {
1657 pwd->pw_name = pw_checkname(newname, 0);
1658 edited = true;
1659 }
1660 }
1661
1662 if (id >= 0 && pwd->pw_uid != id) {
1663 pwd->pw_uid = id;
1664 edited = true;
1665 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
1666 errx(EX_DATAERR, "can't change uid of `root' account");
1667 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
1668 warnx("WARNING: account `%s' will have a uid of 0 "
1669 "(superuser access!)", pwd->pw_name);
1670 }
1671
1672 if (grname && pwd->pw_uid != 0) {
1673 grp = GETGRNAM(grname);
1674 if (grp == NULL)
1675 grp = GETGRGID(pw_checkid(grname, GID_MAX));
1676 if (grp->gr_gid != pwd->pw_gid) {
1677 pwd->pw_gid = grp->gr_gid;
1678 edited = true;
1679 }
1680 }
1681
1682 if (password_days >= 0 && pwd->pw_change != password_days) {
1683 pwd->pw_change = password_days;
1684 edited = true;
1685 }
1686
1687 if (expire_days >= 0 && pwd->pw_expire != expire_days) {
1688 pwd->pw_expire = expire_days;
1689 edited = true;
1690 }
1691
1692 if (shell) {
1693 shell = shell_path(cnf->shelldir, cnf->shells, shell);
1694 if (shell == NULL)
1695 shell = "";
1696 if (strcmp(shell, pwd->pw_shell) != 0) {
1697 pwd->pw_shell = shell;
1698 edited = true;
1699 }
1700 }
1701
1702 if (class && strcmp(pwd->pw_class, class) != 0) {
1703 pwd->pw_class = class;
1704 edited = true;
1705 }
1706
1707 if (homedir && strcmp(pwd->pw_dir, homedir) != 0) {
1708 pwd->pw_dir = homedir;
1709 edited = true;
1710 if (fstatat(conf.rootfd, pwd->pw_dir, &st, 0) == -1) {
1711 if (!createhome)
1712 warnx("WARNING: home `%s' does not exist",
1713 pwd->pw_dir);
1714 } else if (!S_ISDIR(st.st_mode)) {
1715 warnx("WARNING: home `%s' is not a directory",
1716 pwd->pw_dir);
1717 }
1718 }
1719
1720 if (passwd && conf.fd == -1) {
1721 lc = login_getpwclass(pwd);
1722 if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL)
1723 warn("setting crypt(3) format");
1724 login_close(lc);
1725 cnf->default_password = passwd_val(passwd,
1726 cnf->default_password);
1727 pwd->pw_passwd = pw_password(cnf, pwd->pw_name, dryrun);
1728 edited = true;
1729 }
1730
1731 if (gecos && strcmp(pwd->pw_gecos, gecos) != 0) {
1732 pwd->pw_gecos = gecos;
1733 edited = true;
1734 }
1735
1736 if (fd != -1)
1737 edited = pw_set_passwd(pwd, fd, precrypted, true);
1738
1739 if (dryrun)
1740 return (print_user(pwd, pretty, false));
1741
1742 if (edited) /* Only updated this if required */
1743 perform_chgpwent(name, pwd, nis ? nispasswd : NULL);
1744 /* Now perform the needed changes concern groups */
1745 if (groups != NULL) {
1746 /* Delete User from groups using old name */
1747 SETGRENT();
1748 while ((grp = GETGRENT()) != NULL) {
1749 if (grp->gr_mem == NULL)
1750 continue;
1751 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1752 if (strcmp(grp->gr_mem[i] , name) != 0)
1753 continue;
1754 for (j = i; grp->gr_mem[j] != NULL ; j++)
1755 grp->gr_mem[j] = grp->gr_mem[j+1];
1756 chggrent(grp->gr_name, grp);
1757 break;
1758 }
1759 }
1760 ENDGRENT();
1761 /* Add the user to the needed groups */
1762 for (i = 0; i < groups->sl_cur; i++) {
1763 grp = GETGRNAM(groups->sl_str[i]);
1764 grp = gr_add(grp, pwd->pw_name);
1765 if (grp == NULL)
1766 continue;
1767 chggrent(grp->gr_name, grp);
1768 free(grp);
1769 }
1770 }
1771 /* In case of rename we need to walk over the different groups */
1772 if (newname) {
1773 SETGRENT();
1774 while ((grp = GETGRENT()) != NULL) {
1775 if (grp->gr_mem == NULL)
1776 continue;
1777 for (i = 0; grp->gr_mem[i] != NULL; i++) {
1778 if (strcmp(grp->gr_mem[i], name) != 0)
1779 continue;
1780 grp->gr_mem[i] = newname;
1781 chggrent(grp->gr_name, grp);
1782 break;
1783 }
1784 }
1785 }
1786
1787 /* go get a current version of pwd */
1788 if (newname)
1789 name = newname;
1790 pwd = GETPWNAM(name);
1791 if (pwd == NULL)
1792 errx(EX_NOUSER, "user '%s' disappeared during update", name);
1793 grp = GETGRGID(pwd->pw_gid);
1794 pw_log(cnf, M_UPDATE, W_USER, "%s(%ju):%s(%ju):%s:%s:%s",
1795 pwd->pw_name, (uintmax_t)pwd->pw_uid,
1796 grp ? grp->gr_name : "unknown",
1797 (uintmax_t)(grp ? grp->gr_gid : (uid_t)-1),
1798 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
1799
1800 /*
1801 * Let's create and populate the user's home directory. Note
1802 * that this also `works' for editing users if -m is used, but
1803 * existing files will *not* be overwritten.
1804 */
1805 if (PWALTDIR() != PWF_ALT && createhome && pwd->pw_dir &&
1806 *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
1807 if (!skel)
1808 skel = cnf->dotdir;
1809 if (homemode == 0)
1810 homemode = cnf->homemode;
1811 create_and_populate_homedir(cnf, pwd, skel, homemode, true);
1812 }
1813
1814 if (nis && nis_update() == 0)
1815 pw_log(cnf, M_UPDATE, W_USER, "NIS maps updated");
1816
1817 return (EXIT_SUCCESS);
1818 }
A port of FreeBSDs pw for Darwin