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Update from David, reflecting Wolfram's wishes regarding limitation of
[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 * $Id: pw_user.c,v 1.1.1.3 1996/12/10 23:59:02 joerg Exp $
27 */
28
29 #include <unistd.h>
30 #include <fcntl.h>
31 #include <ctype.h>
32 #include <paths.h>
33 #include <sys/param.h>
34 #include <dirent.h>
35 #include <termios.h>
36 #include "pw.h"
37 #include "bitmap.h"
38 #include "pwupd.h"
39
40 static int print_user(struct passwd * pwd, int pretty);
41 static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
42 static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
43 static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
44 static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
45 static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user);
46 static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell);
47 static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user);
48 static char *pw_checkname(char *name, int gecos);
49 static char *shell_path(char const * path, char *shells[], char *sh);
50 static void rmat(uid_t uid);
51
52 /*-
53 * -C config configuration file
54 * -q quiet operation
55 * -n name login name
56 * -u uid user id
57 * -c comment user name/comment
58 * -d directory home directory
59 * -e date account expiry date
60 * -p date password expiry date
61 * -g grp primary group
62 * -G grp1,grp2 additional groups
63 * -m [ -k dir ] create and set up home
64 * -s shell name of login shell
65 * -o duplicate uid ok
66 * -L class user class
67 * -l name new login name
68 * -h fd password filehandle
69 * -F force print or add
70 * Setting defaults:
71 * -D set user defaults
72 * -b dir default home root dir
73 * -e period default expiry period
74 * -p period default password change period
75 * -g group default group
76 * -G grp1,grp2.. default additional groups
77 * -L class default login class
78 * -k dir default home skeleton
79 * -s shell default shell
80 * -w method default password method
81 */
82
83 int
84 pw_user(struct userconf * cnf, int mode, struct cargs * args)
85 {
86 char *p = NULL;
87 struct carg *a_name;
88 struct carg *a_uid;
89 struct carg *arg;
90 struct passwd *pwd = NULL;
91 struct group *grp;
92 struct stat st;
93 char line[MAXPWLINE];
94
95 static struct passwd fakeuser =
96 {
97 NULL,
98 "*",
99 -1,
100 -1,
101 0,
102 "",
103 "User &",
104 "/bin/sh",
105 0,
106 0
107 };
108
109 /*
110 * With M_NEXT, we only need to return the
111 * next uid to stdout
112 */
113 if (mode == M_NEXT)
114 {
115 uid_t next = pw_uidpolicy(cnf, args);
116 if (getarg(args, 'q'))
117 return next;
118 printf("%ld:", (long)next);
119 pw_group(cnf, mode, args);
120 return EXIT_SUCCESS;
121 }
122
123 /*
124 * We can do all of the common legwork here
125 */
126
127 if ((arg = getarg(args, 'b')) != NULL) {
128 cnf->home = arg->val;
129 if (stat(cnf->home, &st) == -1 || !S_ISDIR(st.st_mode))
130 cmderr(EX_OSFILE, "root home `%s' is not a directory or does not exist\n", cnf->home);
131 }
132 if ((arg = getarg(args, 'e')) != NULL)
133 cnf->expire_days = atoi(arg->val);
134
135 if ((arg = getarg(args, 'p')) != NULL && arg->val)
136 cnf->password_days = atoi(arg->val);
137
138 if ((arg = getarg(args, 'g')) != NULL) {
139 p = arg->val;
140 if ((grp = getgrnam(p)) == NULL) {
141 if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL)
142 cmderr(EX_NOUSER, "group `%s' does not exist\n", p);
143 }
144 cnf->default_group = newstr(grp->gr_name);
145 }
146 if ((arg = getarg(args, 'L')) != NULL)
147 cnf->default_class = pw_checkname(arg->val, 0);
148
149 if ((arg = getarg(args, 'G')) != NULL && arg->val) {
150 int i = 0;
151
152 for (p = strtok(arg->val, ", \t"); i < _UC_MAXGROUPS && p != NULL; p = strtok(NULL, ", \t")) {
153 if ((grp = getgrnam(p)) == NULL) {
154 if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL)
155 cmderr(EX_NOUSER, "group `%s' does not exist\n", p);
156 }
157 cnf->groups[i++] = newstr(grp->gr_name);
158 }
159 while (i < _UC_MAXGROUPS)
160 cnf->groups[i++] = NULL;
161 }
162 if ((arg = getarg(args, 'k')) != NULL) {
163 if (stat(cnf->dotdir = arg->val, &st) == -1 || S_ISDIR(st.st_mode))
164 cmderr(EX_OSFILE, "skeleton `%s' is not a directory or does not exist\n", cnf->dotdir);
165 }
166 if ((arg = getarg(args, 's')) != NULL)
167 cnf->shell_default = arg->val;
168
169 if (mode == M_ADD && getarg(args, 'D')) {
170 if (getarg(args, 'n') != NULL)
171 cmderr(EX_DATAERR, "can't combine `-D' with `-n name'\n");
172 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
173 if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
174 cnf->min_uid = 1000;
175 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
176 cnf->max_uid = 32000;
177 }
178 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
179 if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
180 cnf->min_gid = 1000;
181 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
182 cnf->max_gid = 32000;
183 }
184 if ((arg = getarg(args, 'w')) != NULL)
185 cnf->default_password = boolean_val(arg->val, cnf->default_password);
186
187 arg = getarg(args, 'C');
188 if (write_userconfig(arg ? arg->val : NULL))
189 return EXIT_SUCCESS;
190 perror("config update");
191 return EX_IOERR;
192 }
193 if (mode == M_PRINT && getarg(args, 'a')) {
194 int pretty = getarg(args, 'P') != NULL;
195
196 setpwent();
197 while ((pwd = getpwent()) != NULL)
198 print_user(pwd, pretty);
199 endpwent();
200 return EXIT_SUCCESS;
201 }
202 if ((a_name = getarg(args, 'n')) != NULL)
203 pwd = getpwnam(pw_checkname(a_name->val, 0));
204 a_uid = getarg(args, 'u');
205
206 if (a_uid == NULL) {
207 if (a_name == NULL)
208 cmderr(EX_DATAERR, "user name or id required\n");
209
210 /*
211 * Determine whether 'n' switch is name or uid - we don't
212 * really don't really care which we have, but we need to
213 * know.
214 */
215 if (mode != M_ADD && pwd == NULL && isdigit(*a_name->val) && atoi(a_name->val) > 0) { /* Assume uid */
216 (a_uid = a_name)->ch = 'u';
217 a_name = NULL;
218 }
219 }
220 /*
221 * Update, delete & print require that the user exists
222 */
223 if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) {
224 if (a_name == NULL && pwd == NULL) /* Try harder */
225 pwd = getpwuid(atoi(a_uid->val));
226
227 if (pwd == NULL) {
228 if (mode == M_PRINT && getarg(args, 'F')) {
229 fakeuser.pw_name = a_name ? a_name->val : "nouser";
230 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
231 return print_user(&fakeuser, getarg(args, 'P') != NULL);
232 }
233 if (a_name == NULL)
234 cmderr(EX_NOUSER, "no such uid `%s'\n", a_uid->val);
235 cmderr(EX_NOUSER, "no such user `%s'\n", a_name->val);
236 }
237 if (a_name == NULL) /* May be needed later */
238 a_name = addarg(args, 'n', newstr(pwd->pw_name));
239
240 /*
241 * Handle deletions now
242 */
243 if (mode == M_DELETE) {
244 char file[MAXPATHLEN];
245 char home[MAXPATHLEN];
246 uid_t uid = pwd->pw_uid;
247
248 if (strcmp(pwd->pw_name, "root") == 0)
249 cmderr(EX_DATAERR, "cannot remove user 'root'\n");
250
251 /*
252 * Remove crontabs
253 */
254 sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
255 if (access(file, F_OK) == 0) {
256 sprintf(file, "crontab -u %s -r", pwd->pw_name);
257 system(file);
258 }
259 /*
260 * Save these for later, since contents of pwd may be
261 * invalidated by deletion
262 */
263 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
264 strncpy(home, pwd->pw_dir, sizeof home);
265 home[sizeof home - 1] = '\0';
266
267 if (!delpwent(pwd))
268 cmderr(EX_IOERR, "Error updating passwd file: %s\n", strerror(errno));
269 editgroups(a_name->val, NULL);
270
271 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
272
273 /*
274 * Remove mail file
275 */
276 remove(file);
277
278 /*
279 * Remove at jobs
280 */
281 if (getpwuid(uid) == NULL)
282 rmat(uid);
283
284 /*
285 * Remove home directory and contents
286 */
287 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
288 if (stat(home, &st) != -1) {
289 rm_r(home, uid);
290 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
291 a_name->val, (long) uid, home,
292 stat(home, &st) == -1 ? "" : "not completely ");
293 }
294 }
295 return EXIT_SUCCESS;
296 } else if (mode == M_PRINT)
297 return print_user(pwd, getarg(args, 'P') != NULL);
298
299 /*
300 * The rest is edit code
301 */
302 if ((arg = getarg(args, 'l')) != NULL) {
303 if (strcmp(pwd->pw_name, "root") == 0)
304 cmderr(EX_DATAERR, "can't rename `root' account\n");
305 pwd->pw_name = pw_checkname(arg->val, 0);
306 }
307 if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) {
308 pwd->pw_uid = (uid_t) atol(arg->val);
309 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
310 cmderr(EX_DATAERR, "can't change uid of `root' account\n");
311 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
312 fprintf(stderr, "WARNING: account `%s' will have a uid of 0 (superuser access!)\n", pwd->pw_name);
313 }
314 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */
315 pwd->pw_gid = (gid_t) getgrnam(cnf->default_group)->gr_gid;
316
317 if ((arg = getarg(args, 'p')) != NULL) {
318 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0)
319 pwd->pw_change = 0;
320 else {
321 time_t now = time(NULL);
322 time_t expire = parse_date(now, arg->val);
323
324 if (now == expire)
325 cmderr(EX_DATAERR, "Invalid password change date `%s'\n", arg->val);
326 pwd->pw_change = expire;
327 }
328 }
329 if ((arg = getarg(args, 'e')) != NULL) {
330 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0)
331 pwd->pw_expire = 0;
332 else {
333 time_t now = time(NULL);
334 time_t expire = parse_date(now, arg->val);
335
336 if (now == expire)
337 cmderr(EX_DATAERR, "Invalid account expiry date `%s'\n", arg->val);
338 pwd->pw_expire = expire;
339 }
340 }
341 if ((arg = getarg(args, 's')) != NULL)
342 pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
343
344 if (getarg(args, 'L'))
345 pwd->pw_class = cnf->default_class;
346
347 if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL)
348 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
349
350 } else {
351 if (a_name == NULL) /* Required */
352 cmderr(EX_DATAERR, "login name required\n");
353 else if ((pwd = getpwnam(a_name->val)) != NULL) /* Exists */
354 cmderr(EX_DATAERR, "login name `%s' already exists\n", a_name->val);
355
356 /*
357 * Now, set up defaults for a new user
358 */
359 pwd = &fakeuser;
360 pwd->pw_name = a_name->val;
361 pwd->pw_class = cnf->default_class ? cnf->default_class : "";
362 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
363 pwd->pw_uid = pw_uidpolicy(cnf, args);
364 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
365 pwd->pw_change = pw_pwdpolicy(cnf, args);
366 pwd->pw_expire = pw_exppolicy(cnf, args);
367 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
368 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
369
370 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
371 fprintf(stderr, "WARNING: new account `%s' has a uid of 0 (superuser access!)\n", pwd->pw_name);
372 }
373
374 /*
375 * Shared add/edit code
376 */
377 if ((arg = getarg(args, 'c')) != NULL)
378 pwd->pw_gecos = pw_checkname(arg->val, 1);
379
380 if ((arg = getarg(args, 'h')) != NULL) {
381 if (strcmp(arg->val, "-") == 0)
382 pwd->pw_passwd = "*"; /* No access */
383 else {
384 int fd = atoi(arg->val);
385 int b;
386 int istty = isatty(fd);
387 struct termios t;
388
389 if (istty) {
390 if (tcgetattr(fd, &t) == -1)
391 istty = 0;
392 else {
393 struct termios n = t;
394
395 /* Disable echo */
396 n.c_lflag &= ~(ECHO);
397 tcsetattr(fd, TCSANOW, &n);
398 printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name);
399 fflush(stdout);
400 }
401 }
402 b = read(fd, line, sizeof(line) - 1);
403 if (istty) { /* Restore state */
404 tcsetattr(fd, TCSANOW, &t);
405 fputc('\n', stdout);
406 fflush(stdout);
407 }
408 if (b < 0) {
409 perror("-h file descriptor");
410 return EX_IOERR;
411 }
412 line[b] = '\0';
413 if ((p = strpbrk(line, " \t\r\n")) != NULL)
414 *p = '\0';
415 if (!*line)
416 cmderr(EX_DATAERR, "empty password read on file descriptor %d\n", fd);
417 pwd->pw_passwd = pw_pwcrypt(line);
418 }
419 }
420
421 /*
422 * Special case: -N only displays & exits
423 */
424 if (getarg(args, 'N') != NULL)
425 return print_user(pwd, getarg(args, 'P') != NULL);
426
427 if ((mode == M_ADD && !addpwent(pwd)) ||
428 (mode == M_UPDATE && !chgpwent(a_name->val, pwd))) {
429 perror("password update");
430 return EX_IOERR;
431 }
432 /*
433 * Ok, user is created or changed - now edit group file
434 */
435
436 if (mode == M_ADD || getarg(args, 'G') != NULL)
437 editgroups(pwd->pw_name, cnf->groups);
438
439 /* pwd may have been invalidated */
440 if ((pwd = getpwnam(a_name->val)) == NULL)
441 cmderr(EX_NOUSER, "user '%s' disappeared during update\n", a_name->val);
442
443 grp = getgrgid(pwd->pw_gid);
444 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s",
445 pwd->pw_name, (long) pwd->pw_uid,
446 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
447 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
448
449 /*
450 * If adding, let's touch and chown the user's mail file. This is not
451 * strictly necessary under BSD with a 0755 maildir but it also
452 * doesn't hurt anything to create the empty mailfile
453 */
454 if (mode == M_ADD) {
455 FILE *fp;
456
457 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
458 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents &
459 * mtime */
460 chown(line, pwd->pw_uid, pwd->pw_gid);
461
462 /*
463 * Send mail to the new user as well, if we are asked to
464 */
465 if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
466 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");
467
468 if (pfp == NULL)
469 perror("sendmail");
470 else {
471 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
472 while (fgets(line, sizeof(line), fp) != NULL) {
473 /* Do substitutions? */
474 fputs(line, pfp);
475 }
476 pclose(pfp);
477 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
478 pwd->pw_name, (long) pwd->pw_uid);
479 }
480 fclose(fp);
481 }
482 }
483 /*
484 * Finally, let's create and populate the user's home directory. Note
485 * that this also `works' for editing users if -m is used, but
486 * existing files will *not* be overwritten.
487 */
488 if (getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
489 copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid);
490 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
491 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
492 }
493 return EXIT_SUCCESS;
494 }
495
496
497 static uid_t
498 pw_uidpolicy(struct userconf * cnf, struct cargs * args)
499 {
500 struct passwd *pwd;
501 uid_t uid = (uid_t) - 1;
502 struct carg *a_uid = getarg(args, 'u');
503
504 /*
505 * Check the given uid, if any
506 */
507 if (a_uid != NULL) {
508 uid = (uid_t) atol(a_uid->val);
509
510 if ((pwd = getpwuid(uid)) != NULL && getarg(args, 'o') == NULL)
511 cmderr(EX_DATAERR, "uid `%ld' has already been allocated\n", (long) pwd->pw_uid);
512 } else {
513 struct bitmap bm;
514
515 /*
516 * We need to allocate the next available uid under one of
517 * two policies a) Grab the first unused uid b) Grab the
518 * highest possible unused uid
519 */
520 if (cnf->min_uid >= cnf->max_uid) { /* Sanity
521 * claus^H^H^H^Hheck */
522 cnf->min_uid = 1000;
523 cnf->max_uid = 32000;
524 }
525 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
526
527 /*
528 * Now, let's fill the bitmap from the password file
529 */
530 setpwent();
531 while ((pwd = getpwent()) != NULL)
532 if (pwd->pw_uid >= (int) cnf->min_uid && pwd->pw_uid <= (int) cnf->max_uid)
533 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
534 endpwent();
535
536 /*
537 * Then apply the policy, with fallback to reuse if necessary
538 */
539 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
540 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
541
542 /*
543 * Another sanity check
544 */
545 if (uid < cnf->min_uid || uid > cnf->max_uid)
546 cmderr(EX_SOFTWARE, "unable to allocate a new uid - range fully used\n");
547 bm_dealloc(&bm);
548 }
549 return uid;
550 }
551
552
553 static uid_t
554 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
555 {
556 struct group *grp;
557 gid_t gid = (uid_t) - 1;
558 struct carg *a_gid = getarg(args, 'g');
559
560 /*
561 * If no arg given, see if default can help out
562 */
563 if (a_gid == NULL && cnf->default_group && *cnf->default_group)
564 a_gid = addarg(args, 'g', cnf->default_group);
565
566 /*
567 * Check the given gid, if any
568 */
569 setgrent();
570 if (a_gid != NULL) {
571 if ((grp = getgrnam(a_gid->val)) == NULL) {
572 gid = (gid_t) atol(a_gid->val);
573 if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = getgrgid(gid)) == NULL)
574 cmderr(EX_NOUSER, "group `%s' is not defined\n", a_gid->val);
575 }
576 gid = grp->gr_gid;
577 } else if ((grp = getgrnam(nam)) != NULL && grp->gr_mem[0] == NULL) {
578 gid = grp->gr_gid; /* Already created? Use it anyway... */
579 } else {
580 struct cargs grpargs;
581 char tmp[32];
582
583 LIST_INIT(&grpargs);
584 addarg(&grpargs, 'n', nam);
585
586 /*
587 * We need to auto-create a group with the user's name. We
588 * can send all the appropriate output to our sister routine
589 * bit first see if we can create a group with gid==uid so we
590 * can keep the user and group ids in sync. We purposely do
591 * NOT check the gid range if we can force the sync. If the
592 * user's name dups an existing group, then the group add
593 * function will happily handle that case for us and exit.
594 */
595 if (getgrgid(prefer) == NULL) {
596 sprintf(tmp, "%lu", (unsigned long) prefer);
597 addarg(&grpargs, 'g', tmp);
598 }
599 if (getarg(args, 'N'))
600 {
601 addarg(&grpargs, 'N', NULL);
602 addarg(&grpargs, 'q', NULL);
603 gid = pw_group(cnf, M_NEXT, &grpargs);
604 }
605 else
606 {
607 pw_group(cnf, M_ADD, &grpargs);
608 if ((grp = getgrnam(nam)) != NULL)
609 gid = grp->gr_gid;
610 }
611 a_gid = grpargs.lh_first;
612 while (a_gid != NULL) {
613 struct carg *t = a_gid->list.le_next;
614 LIST_REMOVE(a_gid, list);
615 a_gid = t;
616 }
617 }
618 endgrent();
619 return gid;
620 }
621
622
623 static time_t
624 pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
625 {
626 time_t result = 0;
627 time_t now = time(NULL);
628 struct carg *arg = getarg(args, 'e');
629
630 if (arg != NULL) {
631 if ((result = parse_date(now, arg->val)) == now)
632 cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val);
633 } else if (cnf->password_days > 0)
634 result = now + ((long) cnf->password_days * 86400L);
635 return result;
636 }
637
638
639 static time_t
640 pw_exppolicy(struct userconf * cnf, struct cargs * args)
641 {
642 time_t result = 0;
643 time_t now = time(NULL);
644 struct carg *arg = getarg(args, 'e');
645
646 if (arg != NULL) {
647 if ((result = parse_date(now, arg->val)) == now)
648 cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val);
649 } else if (cnf->expire_days > 0)
650 result = now + ((long) cnf->expire_days * 86400L);
651 return result;
652 }
653
654
655 static char *
656 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
657 {
658 struct carg *arg = getarg(args, 'd');
659
660 if (arg)
661 return arg->val;
662 else {
663 static char home[128];
664
665 if (cnf->home == NULL || *cnf->home == '\0')
666 cmderr(EX_CONFIG, "no base home directory set\n");
667 sprintf(home, "%s/%s", cnf->home, user);
668 return home;
669 }
670 }
671
672 static char *
673 shell_path(char const * path, char *shells[], char *sh)
674 {
675 if (sh != NULL && (*sh == '/' || *sh == '\0'))
676 return sh; /* specified full path or forced none */
677 else {
678 char *p;
679 char paths[_UC_MAXLINE];
680
681 /*
682 * We need to search paths
683 */
684 strncpy(paths, path, sizeof paths);
685 paths[sizeof paths - 1] = '\0';
686 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
687 int i;
688 static char shellpath[256];
689
690 if (sh != NULL) {
691 sprintf(shellpath, "%s/%s", p, sh);
692 if (access(shellpath, X_OK) == 0)
693 return shellpath;
694 } else
695 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
696 sprintf(shellpath, "%s/%s", p, shells[i]);
697 if (access(shellpath, X_OK) == 0)
698 return shellpath;
699 }
700 }
701 if (sh == NULL)
702 cmderr(EX_OSFILE, "can't find shell `%s' in shell paths\n", sh);
703 cmderr(EX_CONFIG, "no default shell available or defined\n");
704 return NULL;
705 }
706 }
707
708
709 static char *
710 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
711 {
712 char *sh = newshell;
713 struct carg *arg = getarg(args, 's');
714
715 if (newshell == NULL && arg != NULL)
716 sh = arg->val;
717 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
718 }
719
720 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.";
721
722 char *
723 pw_pwcrypt(char *password)
724 {
725 int i;
726 char salt[12];
727
728 static char buf[256];
729
730 /*
731 * Calculate a salt value
732 */
733 srandom((unsigned) (time(NULL) | getpid()));
734 for (i = 0; i < 8; i++)
735 salt[i] = chars[random() % 63];
736 salt[i] = '\0';
737
738 return strcpy(buf, crypt(password, salt));
739 }
740
741
742 static char *
743 pw_password(struct userconf * cnf, struct cargs * args, char const * user)
744 {
745 int i, l;
746 char pwbuf[32];
747
748 switch (cnf->default_password) {
749 case -1: /* Random password */
750 srandom((unsigned) (time(NULL) | getpid()));
751 l = (random() % 8 + 8); /* 8 - 16 chars */
752 for (i = 0; i < l; i++)
753 pwbuf[i] = chars[random() % sizeof(chars)];
754 pwbuf[i] = '\0';
755
756 /*
757 * We give this information back to the user
758 */
759 if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) {
760 if (isatty(0))
761 printf("Password is: ");
762 printf("%s\n", pwbuf);
763 fflush(stdout);
764 }
765 break;
766
767 case -2: /* No password at all! */
768 return "";
769
770 case 0: /* No login - default */
771 default:
772 return "*";
773
774 case 1: /* user's name */
775 strncpy(pwbuf, user, sizeof pwbuf);
776 pwbuf[sizeof pwbuf - 1] = '\0';
777 break;
778 }
779 return pw_pwcrypt(pwbuf);
780 }
781
782
783 static int
784 print_user(struct passwd * pwd, int pretty)
785 {
786 if (!pretty) {
787 char buf[_UC_MAXLINE];
788
789 fmtpwent(buf, pwd);
790 fputs(buf, stdout);
791 } else {
792 int j;
793 char *p;
794 struct group *grp = getgrgid(pwd->pw_gid);
795 char uname[60] = "User &", office[60] = "[None]",
796 wphone[60] = "[None]", hphone[60] = "[None]";
797
798 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
799 strncpy(uname, p, sizeof uname);
800 uname[sizeof uname - 1] = '\0';
801 if ((p = strtok(NULL, ",")) != NULL) {
802 strncpy(office, p, sizeof office);
803 office[sizeof office - 1] = '\0';
804 if ((p = strtok(NULL, ",")) != NULL) {
805 strncpy(wphone, p, sizeof wphone);
806 wphone[sizeof wphone - 1] = '\0';
807 if ((p = strtok(NULL, "")) != NULL) {
808 strncpy(hphone, p, sizeof hphone);
809 hphone[sizeof hphone - 1] = '\0';
810 }
811 }
812 }
813 }
814 /*
815 * Handle '&' in gecos field
816 */
817 if ((p = strchr(uname, '&')) != NULL) {
818 int l = strlen(pwd->pw_name);
819 int m = strlen(p);
820
821 memmove(p + l, p + 1, m);
822 memmove(p, pwd->pw_name, l);
823 *p = (char) toupper(*p);
824 }
825 printf("Login Name : %-10s #%-22ld Group : %-10s #%ld\n"
826 " Full Name : %s\n"
827 " Home : %-32.32s Class : %s\n"
828 " Shell : %-32.32s Office : %s\n"
829 "Work Phone : %-32.32s Home Phone : %s\n",
830
831 pwd->pw_name, (long) pwd->pw_uid,
832 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
833 uname, pwd->pw_dir, pwd->pw_class,
834 pwd->pw_shell, office, wphone, hphone);
835 setgrent();
836 j = 0;
837 while ((grp=getgrent()) != NULL)
838 {
839 int i = 0;
840 while (i < _UC_MAXGROUPS && grp->gr_mem[i] != NULL)
841 {
842 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
843 {
844 printf(j++ == 0 ? " Groups : %s" : ",%s", grp->gr_name);
845 break;
846 }
847 ++i;
848 }
849 }
850 endgrent();
851 printf("%s\n", j ? "\n" : "");
852 }
853 return EXIT_SUCCESS;
854 }
855
856 static char *
857 pw_checkname(char *name, int gecos)
858 {
859 int l = 0;
860 char const *notch = gecos ? ":" : " ,\t:+-&#%$^()!@~*?<>=|\\/\"";
861
862 while (name[l]) {
863 if (strchr(notch, name[l]) != NULL || name[l] < ' ' || name[l] > 126)
864 cmderr(EX_DATAERR, (name[l]<' ' || (unsigned char)name[l] > 126)
865 ? "invalid character `%c' in field\n"
866 : "invalid character 0x$02x in field\n",
867 name[l]);
868 ++l;
869 }
870 if (!gecos && l > MAXLOGNAME)
871 cmderr(EX_DATAERR, "name too long `%s'\n", name);
872 return name;
873 }
874
875
876 static void
877 rmat(uid_t uid)
878 {
879 DIR *d = opendir("/var/at/jobs");
880
881 if (d != NULL) {
882 struct dirent *e;
883
884 while ((e = readdir(d)) != NULL) {
885 struct stat st;
886
887 if (strncmp(e->d_name, ".lock", 5) != 0 &&
888 stat(e->d_name, &st) == 0 &&
889 !S_ISDIR(st.st_mode) &&
890 st.st_uid == uid) {
891 char tmp[MAXPATHLEN];
892
893 sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
894 system(tmp);
895 }
896 }
897 closedir(d);
898 }
899 }
A port of FreeBSDs pw for Darwin