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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
1b992147 LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2014 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
3f6fd1ba | 21 | #include <getopt.h> |
1b992147 | 22 | #include <grp.h> |
9ab315cc | 23 | #include <gshadow.h> |
3f6fd1ba LP |
24 | #include <pwd.h> |
25 | #include <shadow.h> | |
932ad62b | 26 | #include <utmp.h> |
1b992147 | 27 | |
b5efdb8a | 28 | #include "alloc-util.h" |
1b992147 LP |
29 | #include "conf-files.h" |
30 | #include "copy.h" | |
a0f29c76 LP |
31 | #include "def.h" |
32 | #include "fd-util.h" | |
1dd98a71 | 33 | #include "fs-util.h" |
f7f628b5 | 34 | #include "fileio-label.h" |
f97b34a6 | 35 | #include "format-util.h" |
3f6fd1ba LP |
36 | #include "hashmap.h" |
37 | #include "path-util.h" | |
38 | #include "selinux-util.h" | |
07630cea | 39 | #include "smack-util.h" |
3f6fd1ba | 40 | #include "specifier.h" |
07630cea | 41 | #include "string-util.h" |
3f6fd1ba LP |
42 | #include "strv.h" |
43 | #include "uid-range.h" | |
a0f29c76 | 44 | #include "user-util.h" |
3f6fd1ba LP |
45 | #include "utf8.h" |
46 | #include "util.h" | |
1b992147 LP |
47 | |
48 | typedef enum ItemType { | |
49 | ADD_USER = 'u', | |
50 | ADD_GROUP = 'g', | |
a12b0cc3 | 51 | ADD_MEMBER = 'm', |
8530dc44 | 52 | ADD_RANGE = 'r', |
1b992147 LP |
53 | } ItemType; |
54 | typedef struct Item { | |
55 | ItemType type; | |
56 | ||
57 | char *name; | |
58 | char *uid_path; | |
59 | char *gid_path; | |
60 | char *description; | |
7629889c | 61 | char *home; |
1b992147 LP |
62 | |
63 | gid_t gid; | |
64 | uid_t uid; | |
65 | ||
66 | bool gid_set:1; | |
67 | bool uid_set:1; | |
68 | ||
c1b6b04f KS |
69 | bool todo_user:1; |
70 | bool todo_group:1; | |
1b992147 LP |
71 | } Item; |
72 | ||
73 | static char *arg_root = NULL; | |
74 | ||
75eb6154 | 75 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("sysusers.d"); |
1b992147 LP |
76 | |
77 | static Hashmap *users = NULL, *groups = NULL; | |
78 | static Hashmap *todo_uids = NULL, *todo_gids = NULL; | |
a12b0cc3 | 79 | static Hashmap *members = NULL; |
1b992147 LP |
80 | |
81 | static Hashmap *database_uid = NULL, *database_user = NULL; | |
82 | static Hashmap *database_gid = NULL, *database_group = NULL; | |
83 | ||
fed1e721 | 84 | static uid_t search_uid = UID_INVALID; |
8530dc44 LP |
85 | static UidRange *uid_range = NULL; |
86 | static unsigned n_uid_range = 0; | |
1b992147 | 87 | |
1b992147 LP |
88 | static int load_user_database(void) { |
89 | _cleanup_fclose_ FILE *f = NULL; | |
90 | const char *passwd_path; | |
91 | struct passwd *pw; | |
92 | int r; | |
93 | ||
1d13f648 | 94 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); |
1b992147 LP |
95 | f = fopen(passwd_path, "re"); |
96 | if (!f) | |
97 | return errno == ENOENT ? 0 : -errno; | |
98 | ||
d5099efc | 99 | r = hashmap_ensure_allocated(&database_user, &string_hash_ops); |
1b992147 LP |
100 | if (r < 0) |
101 | return r; | |
102 | ||
d5099efc | 103 | r = hashmap_ensure_allocated(&database_uid, NULL); |
1b992147 LP |
104 | if (r < 0) |
105 | return r; | |
106 | ||
107 | errno = 0; | |
108 | while ((pw = fgetpwent(f))) { | |
109 | char *n; | |
110 | int k, q; | |
111 | ||
112 | n = strdup(pw->pw_name); | |
113 | if (!n) | |
114 | return -ENOMEM; | |
115 | ||
116 | k = hashmap_put(database_user, n, UID_TO_PTR(pw->pw_uid)); | |
117 | if (k < 0 && k != -EEXIST) { | |
118 | free(n); | |
119 | return k; | |
120 | } | |
121 | ||
122 | q = hashmap_put(database_uid, UID_TO_PTR(pw->pw_uid), n); | |
123 | if (q < 0 && q != -EEXIST) { | |
124 | if (k < 0) | |
125 | free(n); | |
126 | return q; | |
127 | } | |
128 | ||
129 | if (q < 0 && k < 0) | |
130 | free(n); | |
131 | ||
132 | errno = 0; | |
133 | } | |
134 | if (!IN_SET(errno, 0, ENOENT)) | |
135 | return -errno; | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
140 | static int load_group_database(void) { | |
141 | _cleanup_fclose_ FILE *f = NULL; | |
142 | const char *group_path; | |
143 | struct group *gr; | |
144 | int r; | |
145 | ||
1d13f648 | 146 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
147 | f = fopen(group_path, "re"); |
148 | if (!f) | |
149 | return errno == ENOENT ? 0 : -errno; | |
150 | ||
d5099efc | 151 | r = hashmap_ensure_allocated(&database_group, &string_hash_ops); |
1b992147 LP |
152 | if (r < 0) |
153 | return r; | |
154 | ||
d5099efc | 155 | r = hashmap_ensure_allocated(&database_gid, NULL); |
1b992147 LP |
156 | if (r < 0) |
157 | return r; | |
158 | ||
159 | errno = 0; | |
160 | while ((gr = fgetgrent(f))) { | |
161 | char *n; | |
162 | int k, q; | |
163 | ||
164 | n = strdup(gr->gr_name); | |
165 | if (!n) | |
166 | return -ENOMEM; | |
167 | ||
168 | k = hashmap_put(database_group, n, GID_TO_PTR(gr->gr_gid)); | |
169 | if (k < 0 && k != -EEXIST) { | |
170 | free(n); | |
171 | return k; | |
172 | } | |
173 | ||
174 | q = hashmap_put(database_gid, GID_TO_PTR(gr->gr_gid), n); | |
175 | if (q < 0 && q != -EEXIST) { | |
176 | if (k < 0) | |
177 | free(n); | |
178 | return q; | |
179 | } | |
180 | ||
181 | if (q < 0 && k < 0) | |
182 | free(n); | |
183 | ||
184 | errno = 0; | |
185 | } | |
186 | if (!IN_SET(errno, 0, ENOENT)) | |
187 | return -errno; | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
9f1c1940 ZJS |
192 | static int make_backup(const char *target, const char *x) { |
193 | _cleanup_close_ int src = -1; | |
194 | _cleanup_fclose_ FILE *dst = NULL; | |
0a12bb1e EV |
195 | _cleanup_free_ char *temp = NULL; |
196 | char *backup; | |
1b992147 LP |
197 | struct timespec ts[2]; |
198 | struct stat st; | |
199 | int r; | |
200 | ||
201 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
202 | if (src < 0) { | |
203 | if (errno == ENOENT) /* No backup necessary... */ | |
204 | return 0; | |
205 | ||
206 | return -errno; | |
207 | } | |
208 | ||
209 | if (fstat(src, &st) < 0) | |
210 | return -errno; | |
211 | ||
9f1c1940 ZJS |
212 | r = fopen_temporary_label(target, x, &dst, &temp); |
213 | if (r < 0) | |
214 | return r; | |
1b992147 | 215 | |
1c876927 | 216 | r = copy_bytes(src, fileno(dst), (uint64_t) -1, COPY_REFLINK); |
1b992147 LP |
217 | if (r < 0) |
218 | goto fail; | |
219 | ||
9f1c1940 ZJS |
220 | /* Don't fail on chmod() or chown(). If it stays owned by us |
221 | * and/or unreadable by others, then it isn't too bad... */ | |
222 | ||
63c372cb | 223 | backup = strjoina(x, "-"); |
9f1c1940 | 224 | |
1b992147 | 225 | /* Copy over the access mask */ |
9f1c1940 | 226 | if (fchmod(fileno(dst), st.st_mode & 07777) < 0) |
56f64d95 | 227 | log_warning_errno(errno, "Failed to change mode on %s: %m", backup); |
1b992147 | 228 | |
9f1c1940 | 229 | if (fchown(fileno(dst), st.st_uid, st.st_gid)< 0) |
56f64d95 | 230 | log_warning_errno(errno, "Failed to change ownership of %s: %m", backup); |
1b992147 LP |
231 | |
232 | ts[0] = st.st_atim; | |
233 | ts[1] = st.st_mtim; | |
f06863bd | 234 | if (futimens(fileno(dst), ts) < 0) |
56f64d95 | 235 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 236 | |
0675e94a AJ |
237 | r = fflush_sync_and_check(dst); |
238 | if (r < 0) | |
239 | goto fail; | |
240 | ||
241 | if (rename(temp, backup) < 0) { | |
242 | r = -errno; | |
1b992147 | 243 | goto fail; |
0675e94a | 244 | } |
1b992147 LP |
245 | |
246 | return 0; | |
247 | ||
248 | fail: | |
249 | unlink(temp); | |
250 | return r; | |
251 | } | |
252 | ||
a12b0cc3 LP |
253 | static int putgrent_with_members(const struct group *gr, FILE *group) { |
254 | char **a; | |
255 | ||
256 | assert(gr); | |
257 | assert(group); | |
258 | ||
259 | a = hashmap_get(members, gr->gr_name); | |
260 | if (a) { | |
261 | _cleanup_strv_free_ char **l = NULL; | |
262 | bool added = false; | |
263 | char **i; | |
264 | ||
265 | l = strv_copy(gr->gr_mem); | |
266 | if (!l) | |
267 | return -ENOMEM; | |
268 | ||
269 | STRV_FOREACH(i, a) { | |
270 | if (strv_find(l, *i)) | |
271 | continue; | |
272 | ||
273 | if (strv_extend(&l, *i) < 0) | |
274 | return -ENOMEM; | |
275 | ||
276 | added = true; | |
277 | } | |
278 | ||
279 | if (added) { | |
280 | struct group t; | |
281 | ||
282 | strv_uniq(l); | |
283 | strv_sort(l); | |
284 | ||
285 | t = *gr; | |
286 | t.gr_mem = l; | |
287 | ||
288 | errno = 0; | |
289 | if (putgrent(&t, group) != 0) | |
f5e5c28f | 290 | return errno > 0 ? -errno : -EIO; |
a12b0cc3 LP |
291 | |
292 | return 1; | |
293 | } | |
294 | } | |
295 | ||
296 | errno = 0; | |
297 | if (putgrent(gr, group) != 0) | |
f5e5c28f | 298 | return errno > 0 ? -errno : -EIO; |
a12b0cc3 LP |
299 | |
300 | return 0; | |
301 | } | |
302 | ||
349cc4a5 | 303 | #if ENABLE_GSHADOW |
9ab315cc LP |
304 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { |
305 | char **a; | |
306 | ||
307 | assert(sg); | |
308 | assert(gshadow); | |
309 | ||
310 | a = hashmap_get(members, sg->sg_namp); | |
311 | if (a) { | |
312 | _cleanup_strv_free_ char **l = NULL; | |
313 | bool added = false; | |
314 | char **i; | |
315 | ||
316 | l = strv_copy(sg->sg_mem); | |
317 | if (!l) | |
318 | return -ENOMEM; | |
319 | ||
320 | STRV_FOREACH(i, a) { | |
321 | if (strv_find(l, *i)) | |
322 | continue; | |
323 | ||
324 | if (strv_extend(&l, *i) < 0) | |
325 | return -ENOMEM; | |
326 | ||
327 | added = true; | |
328 | } | |
329 | ||
330 | if (added) { | |
331 | struct sgrp t; | |
332 | ||
333 | strv_uniq(l); | |
334 | strv_sort(l); | |
335 | ||
336 | t = *sg; | |
337 | t.sg_mem = l; | |
338 | ||
339 | errno = 0; | |
340 | if (putsgent(&t, gshadow) != 0) | |
f5e5c28f | 341 | return errno > 0 ? -errno : -EIO; |
9ab315cc LP |
342 | |
343 | return 1; | |
344 | } | |
345 | } | |
346 | ||
347 | errno = 0; | |
348 | if (putsgent(sg, gshadow) != 0) | |
f5e5c28f | 349 | return errno > 0 ? -errno : -EIO; |
9ab315cc LP |
350 | |
351 | return 0; | |
352 | } | |
b14e1b43 | 353 | #endif |
9ab315cc | 354 | |
fff19499 LP |
355 | static int sync_rights(FILE *from, FILE *to) { |
356 | struct stat st; | |
357 | ||
358 | if (fstat(fileno(from), &st) < 0) | |
359 | return -errno; | |
360 | ||
361 | if (fchmod(fileno(to), st.st_mode & 07777) < 0) | |
362 | return -errno; | |
363 | ||
364 | if (fchown(fileno(to), st.st_uid, st.st_gid) < 0) | |
365 | return -errno; | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
c02e7b1e SW |
370 | static int rename_and_apply_smack(const char *temp_path, const char *dest_path) { |
371 | int r = 0; | |
372 | if (rename(temp_path, dest_path) < 0) | |
373 | return -errno; | |
374 | ||
375 | #ifdef SMACK_RUN_LABEL | |
376 | r = mac_smack_apply(dest_path, SMACK_ATTR_ACCESS, SMACK_FLOOR_LABEL); | |
377 | if (r < 0) | |
378 | return r; | |
379 | #endif | |
380 | return r; | |
381 | } | |
382 | ||
b20b0b66 FB |
383 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { |
384 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
1dd98a71 | 385 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
1b992147 LP |
386 | Iterator iterator; |
387 | Item *i; | |
388 | int r; | |
389 | ||
b20b0b66 FB |
390 | if (hashmap_size(todo_uids) == 0) |
391 | return 0; | |
1b992147 | 392 | |
b20b0b66 FB |
393 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
394 | if (r < 0) | |
395 | return r; | |
396 | ||
397 | original = fopen(passwd_path, "re"); | |
398 | if (original) { | |
399 | struct passwd *pw; | |
400 | ||
401 | r = sync_rights(original, passwd); | |
1b992147 | 402 | if (r < 0) |
1dd98a71 | 403 | return r; |
1b992147 | 404 | |
b20b0b66 FB |
405 | errno = 0; |
406 | while ((pw = fgetpwent(original))) { | |
1b992147 | 407 | |
b20b0b66 FB |
408 | i = hashmap_get(users, pw->pw_name); |
409 | if (i && i->todo_user) { | |
410 | log_error("%s: User \"%s\" already exists.", passwd_path, pw->pw_name); | |
1dd98a71 | 411 | return -EEXIST; |
b20b0b66 | 412 | } |
e3c72c21 | 413 | |
b20b0b66 FB |
414 | if (hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) { |
415 | log_error("%s: Detected collision for UID " UID_FMT ".", passwd_path, pw->pw_uid); | |
1dd98a71 | 416 | return -EEXIST; |
1b992147 | 417 | } |
b20b0b66 FB |
418 | |
419 | errno = 0; | |
1dd98a71 FB |
420 | if (putpwent(pw, passwd) < 0) |
421 | return errno ? -errno : -EIO; | |
1b992147 | 422 | |
b20b0b66 FB |
423 | errno = 0; |
424 | } | |
1dd98a71 FB |
425 | if (!IN_SET(errno, 0, ENOENT)) |
426 | return -errno; | |
427 | ||
428 | } else { | |
429 | if (errno != ENOENT) | |
430 | return -errno; | |
431 | if (fchmod(fileno(passwd), 0644) < 0) | |
432 | return -errno; | |
b20b0b66 FB |
433 | } |
434 | ||
435 | HASHMAP_FOREACH(i, todo_uids, iterator) { | |
436 | struct passwd n = { | |
437 | .pw_name = i->name, | |
438 | .pw_uid = i->uid, | |
439 | .pw_gid = i->gid, | |
440 | .pw_gecos = i->description, | |
1b992147 | 441 | |
b20b0b66 FB |
442 | /* "x" means the password is stored in the shadow file */ |
443 | .pw_passwd = (char*) "x", | |
a12b0cc3 | 444 | |
b20b0b66 FB |
445 | /* We default to the root directory as home */ |
446 | .pw_dir = i->home ? i->home : (char*) "/", | |
1b992147 | 447 | |
b20b0b66 FB |
448 | /* Initialize the shell to nologin, with one exception: |
449 | * for root we patch in something special */ | |
450 | .pw_shell = i->uid == 0 ? (char*) "/bin/sh" : (char*) "/sbin/nologin", | |
451 | }; | |
9ab315cc | 452 | |
b20b0b66 | 453 | errno = 0; |
1dd98a71 FB |
454 | if (putpwent(&n, passwd) != 0) |
455 | return errno ? -errno : -EIO; | |
b20b0b66 FB |
456 | } |
457 | ||
458 | r = fflush_and_check(passwd); | |
459 | if (r < 0) | |
1dd98a71 | 460 | return r; |
b20b0b66 FB |
461 | |
462 | *tmpfile = passwd; | |
463 | *tmpfile_path = passwd_tmp; | |
464 | passwd = NULL; | |
465 | passwd_tmp = NULL; | |
466 | return 0; | |
b20b0b66 FB |
467 | } |
468 | ||
469 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
470 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
1dd98a71 | 471 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
b20b0b66 FB |
472 | Iterator iterator; |
473 | long lstchg; | |
474 | Item *i; | |
475 | int r; | |
476 | ||
477 | if (hashmap_size(todo_uids) == 0) | |
478 | return 0; | |
479 | ||
480 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); | |
481 | if (r < 0) | |
482 | return r; | |
9ab315cc | 483 | |
b20b0b66 FB |
484 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); |
485 | ||
486 | original = fopen(shadow_path, "re"); | |
487 | if (original) { | |
488 | struct spwd *sp; | |
489 | ||
490 | r = sync_rights(original, shadow); | |
9ab315cc | 491 | if (r < 0) |
1dd98a71 | 492 | return r; |
9ab315cc | 493 | |
b20b0b66 FB |
494 | errno = 0; |
495 | while ((sp = fgetspent(original))) { | |
9ab315cc | 496 | |
b20b0b66 FB |
497 | i = hashmap_get(users, sp->sp_namp); |
498 | if (i && i->todo_user) { | |
499 | /* we will update the existing entry */ | |
500 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 501 | |
b20b0b66 FB |
502 | /* only the /etc/shadow stage is left, so we can |
503 | * safely remove the item from the todo set */ | |
504 | i->todo_user = false; | |
505 | hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); | |
9ab315cc | 506 | } |
b20b0b66 FB |
507 | |
508 | errno = 0; | |
1dd98a71 FB |
509 | if (putspent(sp, shadow) < 0) |
510 | return errno ? -errno : -EIO; | |
9ab315cc | 511 | |
b20b0b66 FB |
512 | errno = 0; |
513 | } | |
1dd98a71 FB |
514 | if (!IN_SET(errno, 0, ENOENT)) |
515 | return -errno; | |
516 | ||
517 | } else { | |
518 | if (errno != ENOENT) | |
519 | return -errno; | |
520 | if (fchmod(fileno(shadow), 0000) < 0) | |
521 | return -errno; | |
b20b0b66 | 522 | } |
9ab315cc | 523 | |
b20b0b66 FB |
524 | HASHMAP_FOREACH(i, todo_uids, iterator) { |
525 | struct spwd n = { | |
526 | .sp_namp = i->name, | |
527 | .sp_pwdp = (char*) "!!", | |
528 | .sp_lstchg = lstchg, | |
529 | .sp_min = -1, | |
530 | .sp_max = -1, | |
531 | .sp_warn = -1, | |
532 | .sp_inact = -1, | |
533 | .sp_expire = -1, | |
534 | .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */ | |
535 | }; | |
9ab315cc | 536 | |
b20b0b66 | 537 | errno = 0; |
1dd98a71 FB |
538 | if (putspent(&n, shadow) != 0) |
539 | return errno ? -errno : -EIO; | |
1b992147 LP |
540 | } |
541 | ||
0675e94a | 542 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 543 | if (r < 0) |
1dd98a71 | 544 | return r; |
b20b0b66 FB |
545 | |
546 | *tmpfile = shadow; | |
547 | *tmpfile_path = shadow_tmp; | |
548 | shadow = NULL; | |
549 | shadow_tmp = NULL; | |
550 | return 0; | |
b20b0b66 | 551 | } |
1b992147 | 552 | |
b20b0b66 FB |
553 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { |
554 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
1dd98a71 | 555 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 FB |
556 | bool group_changed = false; |
557 | Iterator iterator; | |
558 | Item *i; | |
559 | int r; | |
1b992147 | 560 | |
b20b0b66 FB |
561 | if (hashmap_size(todo_gids) == 0 && hashmap_size(members) == 0) |
562 | return 0; | |
e3c72c21 | 563 | |
b20b0b66 FB |
564 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
565 | if (r < 0) | |
566 | return r; | |
567 | ||
568 | original = fopen(group_path, "re"); | |
569 | if (original) { | |
570 | struct group *gr; | |
571 | ||
572 | r = sync_rights(original, group); | |
573 | if (r < 0) | |
1dd98a71 | 574 | return r; |
b20b0b66 FB |
575 | |
576 | errno = 0; | |
577 | while ((gr = fgetgrent(original))) { | |
578 | /* Safety checks against name and GID collisions. Normally, | |
579 | * this should be unnecessary, but given that we look at the | |
580 | * entries anyway here, let's make an extra verification | |
581 | * step that we don't generate duplicate entries. */ | |
582 | ||
583 | i = hashmap_get(groups, gr->gr_name); | |
584 | if (i && i->todo_group) { | |
585 | log_error("%s: Group \"%s\" already exists.", group_path, gr->gr_name); | |
1dd98a71 | 586 | return -EEXIST; |
1b992147 | 587 | } |
b20b0b66 FB |
588 | |
589 | if (hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) { | |
590 | log_error("%s: Detected collision for GID " GID_FMT ".", group_path, gr->gr_gid); | |
1dd98a71 | 591 | return -EEXIST; |
1b992147 LP |
592 | } |
593 | ||
b20b0b66 FB |
594 | r = putgrent_with_members(gr, group); |
595 | if (r < 0) | |
1dd98a71 | 596 | return r; |
b20b0b66 FB |
597 | if (r > 0) |
598 | group_changed = true; | |
599 | ||
600 | errno = 0; | |
601 | } | |
1dd98a71 FB |
602 | if (!IN_SET(errno, 0, ENOENT)) |
603 | return -errno; | |
604 | ||
605 | } else { | |
606 | if (errno != ENOENT) | |
607 | return -errno; | |
608 | if (fchmod(fileno(group), 0644) < 0) | |
609 | return -errno; | |
b20b0b66 | 610 | } |
7629889c | 611 | |
b20b0b66 FB |
612 | HASHMAP_FOREACH(i, todo_gids, iterator) { |
613 | struct group n = { | |
614 | .gr_name = i->name, | |
615 | .gr_gid = i->gid, | |
616 | .gr_passwd = (char*) "x", | |
617 | }; | |
1b992147 | 618 | |
b20b0b66 FB |
619 | r = putgrent_with_members(&n, group); |
620 | if (r < 0) | |
1dd98a71 | 621 | return r; |
7629889c | 622 | |
b20b0b66 FB |
623 | group_changed = true; |
624 | } | |
1b992147 | 625 | |
0675e94a | 626 | r = fflush_sync_and_check(group); |
b20b0b66 | 627 | if (r < 0) |
1dd98a71 | 628 | return r; |
1b992147 | 629 | |
b20b0b66 FB |
630 | if (group_changed) { |
631 | *tmpfile = group; | |
632 | *tmpfile_path = group_tmp; | |
633 | group = NULL; | |
634 | group_tmp = NULL; | |
635 | } | |
636 | return 0; | |
b20b0b66 FB |
637 | } |
638 | ||
639 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
349cc4a5 | 640 | #if ENABLE_GSHADOW |
b20b0b66 | 641 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 642 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 FB |
643 | bool group_changed = false; |
644 | Iterator iterator; | |
645 | Item *i; | |
646 | int r; | |
647 | ||
648 | if (hashmap_size(todo_gids) == 0 && hashmap_size(members) == 0) | |
649 | return 0; | |
650 | ||
651 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); | |
652 | if (r < 0) | |
653 | return r; | |
9ab315cc | 654 | |
b20b0b66 FB |
655 | original = fopen(gshadow_path, "re"); |
656 | if (original) { | |
657 | struct sgrp *sg; | |
658 | ||
659 | r = sync_rights(original, gshadow); | |
1b992147 | 660 | if (r < 0) |
1dd98a71 | 661 | return r; |
9ab315cc | 662 | |
b20b0b66 FB |
663 | errno = 0; |
664 | while ((sg = fgetsgent(original))) { | |
c5abf225 | 665 | |
b20b0b66 FB |
666 | i = hashmap_get(groups, sg->sg_namp); |
667 | if (i && i->todo_group) { | |
668 | log_error("%s: Group \"%s\" already exists.", gshadow_path, sg->sg_namp); | |
1dd98a71 | 669 | return -EEXIST; |
b20b0b66 | 670 | } |
9ab315cc | 671 | |
b20b0b66 | 672 | r = putsgent_with_members(sg, gshadow); |
fff19499 | 673 | if (r < 0) |
1dd98a71 | 674 | return r; |
b20b0b66 FB |
675 | if (r > 0) |
676 | group_changed = true; | |
e3c72c21 | 677 | |
9ab315cc | 678 | errno = 0; |
b20b0b66 | 679 | } |
1dd98a71 FB |
680 | if (!IN_SET(errno, 0, ENOENT)) |
681 | return -errno; | |
682 | ||
683 | } else { | |
684 | if (errno != ENOENT) | |
685 | return -errno; | |
686 | if (fchmod(fileno(gshadow), 0000) < 0) | |
687 | return -errno; | |
b20b0b66 | 688 | } |
9ab315cc | 689 | |
b20b0b66 FB |
690 | HASHMAP_FOREACH(i, todo_gids, iterator) { |
691 | struct sgrp n = { | |
692 | .sg_namp = i->name, | |
693 | .sg_passwd = (char*) "!!", | |
694 | }; | |
9ab315cc | 695 | |
b20b0b66 | 696 | r = putsgent_with_members(&n, gshadow); |
9ab315cc | 697 | if (r < 0) |
1dd98a71 | 698 | return r; |
b20b0b66 FB |
699 | |
700 | group_changed = true; | |
9ab315cc LP |
701 | } |
702 | ||
0675e94a | 703 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 704 | if (r < 0) |
1dd98a71 | 705 | return r; |
b20b0b66 | 706 | |
9ab315cc | 707 | if (group_changed) { |
b20b0b66 FB |
708 | *tmpfile = gshadow; |
709 | *tmpfile_path = gshadow_tmp; | |
710 | gshadow = NULL; | |
711 | gshadow_tmp = NULL; | |
712 | } | |
713 | return 0; | |
b14e1b43 FB |
714 | #else |
715 | return 0; | |
716 | #endif | |
b20b0b66 FB |
717 | } |
718 | ||
719 | static int write_files(void) { | |
b20b0b66 | 720 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 721 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
b20b0b66 FB |
722 | const char *passwd_path = NULL, *group_path = NULL, *shadow_path = NULL, *gshadow_path = NULL; |
723 | int r; | |
724 | ||
725 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
726 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
727 | group_path = prefix_roota(arg_root, "/etc/group"); | |
728 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
729 | ||
730 | r = write_temporary_group(group_path, &group, &group_tmp); | |
731 | if (r < 0) | |
1dd98a71 | 732 | return r; |
b20b0b66 FB |
733 | |
734 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
735 | if (r < 0) | |
1dd98a71 | 736 | return r; |
b20b0b66 FB |
737 | |
738 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
739 | if (r < 0) | |
1dd98a71 | 740 | return r; |
b20b0b66 FB |
741 | |
742 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
743 | if (r < 0) | |
1dd98a71 | 744 | return r; |
b20b0b66 FB |
745 | |
746 | /* Make a backup of the old files */ | |
747 | if (group) { | |
748 | r = make_backup("/etc/group", group_path); | |
749 | if (r < 0) | |
1dd98a71 | 750 | return r; |
b20b0b66 FB |
751 | } |
752 | if (gshadow) { | |
753 | r = make_backup("/etc/gshadow", gshadow_path); | |
754 | if (r < 0) | |
1dd98a71 | 755 | return r; |
1b992147 LP |
756 | } |
757 | ||
758 | if (passwd) { | |
9f1c1940 | 759 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 760 | if (r < 0) |
1dd98a71 | 761 | return r; |
1b992147 | 762 | } |
9ab315cc LP |
763 | if (shadow) { |
764 | r = make_backup("/etc/shadow", shadow_path); | |
765 | if (r < 0) | |
1dd98a71 | 766 | return r; |
9ab315cc | 767 | } |
1b992147 LP |
768 | |
769 | /* And make the new files count */ | |
b20b0b66 FB |
770 | if (group) { |
771 | r = rename_and_apply_smack(group_tmp, group_path); | |
772 | if (r < 0) | |
1dd98a71 | 773 | return r; |
9ab315cc | 774 | |
b20b0b66 FB |
775 | group_tmp = mfree(group_tmp); |
776 | } | |
777 | if (gshadow) { | |
778 | r = rename_and_apply_smack(gshadow_tmp, gshadow_path); | |
779 | if (r < 0) | |
1dd98a71 | 780 | return r; |
1b992147 | 781 | |
b20b0b66 | 782 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
783 | } |
784 | ||
785 | if (passwd) { | |
c02e7b1e SW |
786 | r = rename_and_apply_smack(passwd_tmp, passwd_path); |
787 | if (r < 0) | |
1dd98a71 | 788 | return r; |
1b992147 | 789 | |
97b11eed | 790 | passwd_tmp = mfree(passwd_tmp); |
1b992147 | 791 | } |
9ab315cc | 792 | if (shadow) { |
c02e7b1e SW |
793 | r = rename_and_apply_smack(shadow_tmp, shadow_path); |
794 | if (r < 0) | |
1dd98a71 | 795 | return r; |
9ab315cc | 796 | |
97b11eed | 797 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 798 | } |
1b992147 | 799 | |
1dd98a71 | 800 | return 0; |
1b992147 LP |
801 | } |
802 | ||
803 | static int uid_is_ok(uid_t uid, const char *name) { | |
804 | struct passwd *p; | |
805 | struct group *g; | |
806 | const char *n; | |
807 | Item *i; | |
808 | ||
809 | /* Let's see if we already have assigned the UID a second time */ | |
810 | if (hashmap_get(todo_uids, UID_TO_PTR(uid))) | |
811 | return 0; | |
812 | ||
813 | /* Try to avoid using uids that are already used by a group | |
814 | * that doesn't have the same name as our new user. */ | |
815 | i = hashmap_get(todo_gids, GID_TO_PTR(uid)); | |
816 | if (i && !streq(i->name, name)) | |
817 | return 0; | |
818 | ||
819 | /* Let's check the files directly */ | |
820 | if (hashmap_contains(database_uid, UID_TO_PTR(uid))) | |
821 | return 0; | |
822 | ||
823 | n = hashmap_get(database_gid, GID_TO_PTR(uid)); | |
824 | if (n && !streq(n, name)) | |
825 | return 0; | |
826 | ||
827 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
828 | if (!arg_root) { | |
829 | errno = 0; | |
830 | p = getpwuid(uid); | |
831 | if (p) | |
832 | return 0; | |
b0284aba | 833 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
834 | return -errno; |
835 | ||
836 | errno = 0; | |
837 | g = getgrgid((gid_t) uid); | |
838 | if (g) { | |
839 | if (!streq(g->gr_name, name)) | |
840 | return 0; | |
b0284aba | 841 | } else if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
842 | return -errno; |
843 | } | |
844 | ||
845 | return 1; | |
846 | } | |
847 | ||
848 | static int root_stat(const char *p, struct stat *st) { | |
849 | const char *fix; | |
850 | ||
1d13f648 | 851 | fix = prefix_roota(arg_root, p); |
1b992147 LP |
852 | if (stat(fix, st) < 0) |
853 | return -errno; | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
859 | struct stat st; | |
860 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
861 | uid_t uid = 0; |
862 | gid_t gid = 0; | |
1b992147 LP |
863 | |
864 | assert(i); | |
865 | ||
866 | /* First, try to get the gid directly */ | |
867 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { | |
868 | gid = st.st_gid; | |
869 | found_gid = true; | |
870 | } | |
871 | ||
872 | /* Then, try to get the uid directly */ | |
873 | if ((_uid || (_gid && !found_gid)) | |
874 | && i->uid_path | |
875 | && root_stat(i->uid_path, &st) >= 0) { | |
876 | ||
877 | uid = st.st_uid; | |
878 | found_uid = true; | |
879 | ||
880 | /* If we need the gid, but had no success yet, also derive it from the uid path */ | |
881 | if (_gid && !found_gid) { | |
882 | gid = st.st_gid; | |
883 | found_gid = true; | |
884 | } | |
885 | } | |
886 | ||
887 | /* If that didn't work yet, then let's reuse the gid as uid */ | |
888 | if (_uid && !found_uid && i->gid_path) { | |
889 | ||
890 | if (found_gid) { | |
891 | uid = (uid_t) gid; | |
892 | found_uid = true; | |
893 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
894 | uid = (uid_t) st.st_gid; | |
895 | found_uid = true; | |
896 | } | |
897 | } | |
898 | ||
899 | if (_uid) { | |
900 | if (!found_uid) | |
901 | return 0; | |
902 | ||
903 | *_uid = uid; | |
904 | } | |
905 | ||
906 | if (_gid) { | |
907 | if (!found_gid) | |
908 | return 0; | |
909 | ||
910 | *_gid = gid; | |
911 | } | |
912 | ||
913 | return 1; | |
914 | } | |
915 | ||
916 | static int add_user(Item *i) { | |
917 | void *z; | |
918 | int r; | |
919 | ||
920 | assert(i); | |
921 | ||
922 | /* Check the database directly */ | |
923 | z = hashmap_get(database_user, i->name); | |
924 | if (z) { | |
925 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 926 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
927 | i->uid_set = true; |
928 | return 0; | |
929 | } | |
930 | ||
931 | if (!arg_root) { | |
932 | struct passwd *p; | |
1b992147 LP |
933 | |
934 | /* Also check NSS */ | |
935 | errno = 0; | |
936 | p = getpwnam(i->name); | |
937 | if (p) { | |
938 | log_debug("User %s already exists.", i->name); | |
939 | i->uid = p->pw_uid; | |
940 | i->uid_set = true; | |
941 | ||
2fc09a9c DM |
942 | r = free_and_strdup(&i->description, p->pw_gecos); |
943 | if (r < 0) | |
944 | return log_oom(); | |
945 | ||
1b992147 LP |
946 | return 0; |
947 | } | |
4a62c710 MS |
948 | if (!IN_SET(errno, 0, ENOENT)) |
949 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); | |
1b992147 LP |
950 | } |
951 | ||
952 | /* Try to use the suggested numeric uid */ | |
953 | if (i->uid_set) { | |
954 | r = uid_is_ok(i->uid, i->name); | |
f647962d MS |
955 | if (r < 0) |
956 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
957 | if (r == 0) { |
958 | log_debug("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); | |
959 | i->uid_set = false; | |
960 | } | |
961 | } | |
962 | ||
963 | /* If that didn't work, try to read it from the specified path */ | |
964 | if (!i->uid_set) { | |
965 | uid_t c; | |
966 | ||
967 | if (read_id_from_file(i, &c, NULL) > 0) { | |
968 | ||
8530dc44 | 969 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
970 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); |
971 | else { | |
972 | r = uid_is_ok(c, i->name); | |
f647962d MS |
973 | if (r < 0) |
974 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
975 | else if (r > 0) { | |
1b992147 LP |
976 | i->uid = c; |
977 | i->uid_set = true; | |
978 | } else | |
979 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
980 | } | |
981 | } | |
982 | } | |
983 | ||
b938cb90 | 984 | /* Otherwise, try to reuse the group ID */ |
1b992147 LP |
985 | if (!i->uid_set && i->gid_set) { |
986 | r = uid_is_ok((uid_t) i->gid, i->name); | |
f647962d MS |
987 | if (r < 0) |
988 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
989 | if (r > 0) { |
990 | i->uid = (uid_t) i->gid; | |
991 | i->uid_set = true; | |
992 | } | |
993 | } | |
994 | ||
995 | /* And if that didn't work either, let's try to find a free one */ | |
996 | if (!i->uid_set) { | |
8530dc44 LP |
997 | for (;;) { |
998 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
999 | if (r < 0) { | |
1000 | log_error("No free user ID available for %s.", i->name); | |
1001 | return r; | |
1002 | } | |
1b992147 LP |
1003 | |
1004 | r = uid_is_ok(search_uid, i->name); | |
f647962d MS |
1005 | if (r < 0) |
1006 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1007 | else if (r > 0) | |
1b992147 LP |
1008 | break; |
1009 | } | |
1010 | ||
1b992147 LP |
1011 | i->uid_set = true; |
1012 | i->uid = search_uid; | |
1b992147 LP |
1013 | } |
1014 | ||
d5099efc | 1015 | r = hashmap_ensure_allocated(&todo_uids, NULL); |
1b992147 LP |
1016 | if (r < 0) |
1017 | return log_oom(); | |
1018 | ||
1019 | r = hashmap_put(todo_uids, UID_TO_PTR(i->uid), i); | |
1020 | if (r < 0) | |
1021 | return log_oom(); | |
1022 | ||
c1b6b04f | 1023 | i->todo_user = true; |
1b992147 LP |
1024 | log_info("Creating user %s (%s) with uid " UID_FMT " and gid " GID_FMT ".", i->name, strna(i->description), i->uid, i->gid); |
1025 | ||
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | static int gid_is_ok(gid_t gid) { | |
1030 | struct group *g; | |
1031 | struct passwd *p; | |
1032 | ||
1033 | if (hashmap_get(todo_gids, GID_TO_PTR(gid))) | |
1034 | return 0; | |
1035 | ||
1036 | /* Avoid reusing gids that are already used by a different user */ | |
1037 | if (hashmap_get(todo_uids, UID_TO_PTR(gid))) | |
1038 | return 0; | |
1039 | ||
1040 | if (hashmap_contains(database_gid, GID_TO_PTR(gid))) | |
1041 | return 0; | |
1042 | ||
1043 | if (hashmap_contains(database_uid, UID_TO_PTR(gid))) | |
1044 | return 0; | |
1045 | ||
1046 | if (!arg_root) { | |
1047 | errno = 0; | |
1048 | g = getgrgid(gid); | |
1049 | if (g) | |
1050 | return 0; | |
b0284aba | 1051 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1052 | return -errno; |
1053 | ||
1054 | errno = 0; | |
1055 | p = getpwuid((uid_t) gid); | |
1056 | if (p) | |
1057 | return 0; | |
b0284aba | 1058 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1059 | return -errno; |
1060 | } | |
1061 | ||
1062 | return 1; | |
1063 | } | |
1064 | ||
1065 | static int add_group(Item *i) { | |
1066 | void *z; | |
1067 | int r; | |
1068 | ||
1069 | assert(i); | |
1070 | ||
1071 | /* Check the database directly */ | |
1072 | z = hashmap_get(database_group, i->name); | |
1073 | if (z) { | |
1074 | log_debug("Group %s already exists.", i->name); | |
1075 | i->gid = PTR_TO_GID(z); | |
1076 | i->gid_set = true; | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | /* Also check NSS */ | |
1081 | if (!arg_root) { | |
1082 | struct group *g; | |
1083 | ||
1084 | errno = 0; | |
1085 | g = getgrnam(i->name); | |
1086 | if (g) { | |
1087 | log_debug("Group %s already exists.", i->name); | |
1088 | i->gid = g->gr_gid; | |
1089 | i->gid_set = true; | |
1090 | return 0; | |
1091 | } | |
4a62c710 MS |
1092 | if (!IN_SET(errno, 0, ENOENT)) |
1093 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", i->name); | |
1b992147 LP |
1094 | } |
1095 | ||
1096 | /* Try to use the suggested numeric gid */ | |
1097 | if (i->gid_set) { | |
1098 | r = gid_is_ok(i->gid); | |
f647962d MS |
1099 | if (r < 0) |
1100 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1b992147 LP |
1101 | if (r == 0) { |
1102 | log_debug("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); | |
1103 | i->gid_set = false; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | /* Try to reuse the numeric uid, if there's one */ | |
1108 | if (!i->gid_set && i->uid_set) { | |
1109 | r = gid_is_ok((gid_t) i->uid); | |
f647962d MS |
1110 | if (r < 0) |
1111 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1b992147 LP |
1112 | if (r > 0) { |
1113 | i->gid = (gid_t) i->uid; | |
1114 | i->gid_set = true; | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | /* If that didn't work, try to read it from the specified path */ | |
1119 | if (!i->gid_set) { | |
1120 | gid_t c; | |
1121 | ||
1122 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1123 | ||
8530dc44 | 1124 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1125 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); |
1126 | else { | |
1127 | r = gid_is_ok(c); | |
f647962d MS |
1128 | if (r < 0) |
1129 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1130 | else if (r > 0) { | |
1b992147 LP |
1131 | i->gid = c; |
1132 | i->gid_set = true; | |
1133 | } else | |
1134 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1135 | } | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | /* And if that didn't work either, let's try to find a free one */ | |
1140 | if (!i->gid_set) { | |
8530dc44 LP |
1141 | for (;;) { |
1142 | /* We look for new GIDs in the UID pool! */ | |
1143 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1144 | if (r < 0) { | |
1145 | log_error("No free group ID available for %s.", i->name); | |
1146 | return r; | |
1147 | } | |
1148 | ||
1149 | r = gid_is_ok(search_uid); | |
f647962d MS |
1150 | if (r < 0) |
1151 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1152 | else if (r > 0) | |
1b992147 LP |
1153 | break; |
1154 | } | |
1155 | ||
1b992147 | 1156 | i->gid_set = true; |
8530dc44 | 1157 | i->gid = search_uid; |
1b992147 LP |
1158 | } |
1159 | ||
d5099efc | 1160 | r = hashmap_ensure_allocated(&todo_gids, NULL); |
1b992147 LP |
1161 | if (r < 0) |
1162 | return log_oom(); | |
1163 | ||
1164 | r = hashmap_put(todo_gids, GID_TO_PTR(i->gid), i); | |
1165 | if (r < 0) | |
1166 | return log_oom(); | |
1167 | ||
c1b6b04f | 1168 | i->todo_group = true; |
1b992147 LP |
1169 | log_info("Creating group %s with gid " GID_FMT ".", i->name, i->gid); |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | static int process_item(Item *i) { | |
1175 | int r; | |
1176 | ||
1177 | assert(i); | |
1178 | ||
1179 | switch (i->type) { | |
1180 | ||
1181 | case ADD_USER: | |
1182 | r = add_group(i); | |
1183 | if (r < 0) | |
1184 | return r; | |
1185 | ||
1186 | return add_user(i); | |
1187 | ||
1188 | case ADD_GROUP: { | |
1189 | Item *j; | |
1190 | ||
1191 | j = hashmap_get(users, i->name); | |
1192 | if (j) { | |
1193 | /* There's already user to be created for this | |
1194 | * name, let's process that in one step */ | |
1195 | ||
1196 | if (i->gid_set) { | |
1197 | j->gid = i->gid; | |
1198 | j->gid_set = true; | |
1199 | } | |
1200 | ||
1201 | if (i->gid_path) { | |
2fc09a9c DM |
1202 | r = free_and_strdup(&j->gid_path, i->gid_path); |
1203 | if (r < 0) | |
1b992147 LP |
1204 | return log_oom(); |
1205 | } | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | return add_group(i); | |
1211 | } | |
1b992147 | 1212 | |
a12b0cc3 LP |
1213 | default: |
1214 | assert_not_reached("Unknown item type"); | |
1215 | } | |
1b992147 LP |
1216 | } |
1217 | ||
1218 | static void item_free(Item *i) { | |
1219 | ||
1220 | if (!i) | |
1221 | return; | |
1222 | ||
1223 | free(i->name); | |
1224 | free(i->uid_path); | |
1225 | free(i->gid_path); | |
1226 | free(i->description); | |
d9b8ea54 | 1227 | free(i->home); |
1b992147 LP |
1228 | free(i); |
1229 | } | |
1230 | ||
1231 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
1232 | ||
a12b0cc3 LP |
1233 | static int add_implicit(void) { |
1234 | char *g, **l; | |
1235 | Iterator iterator; | |
1236 | int r; | |
1237 | ||
1238 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
1239 | ||
1240 | HASHMAP_FOREACH_KEY(l, g, members, iterator) { | |
1241 | Item *i; | |
1242 | char **m; | |
1243 | ||
1244 | i = hashmap_get(groups, g); | |
1245 | if (!i) { | |
1246 | _cleanup_(item_freep) Item *j = NULL; | |
1247 | ||
d5099efc | 1248 | r = hashmap_ensure_allocated(&groups, &string_hash_ops); |
a12b0cc3 LP |
1249 | if (r < 0) |
1250 | return log_oom(); | |
1251 | ||
1252 | j = new0(Item, 1); | |
1253 | if (!j) | |
1254 | return log_oom(); | |
1255 | ||
1256 | j->type = ADD_GROUP; | |
1257 | j->name = strdup(g); | |
1258 | if (!j->name) | |
1259 | return log_oom(); | |
1260 | ||
1261 | r = hashmap_put(groups, j->name, j); | |
1262 | if (r < 0) | |
1263 | return log_oom(); | |
1264 | ||
1265 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
1266 | j = NULL; | |
1267 | } | |
1268 | ||
1269 | STRV_FOREACH(m, l) { | |
1270 | ||
1271 | i = hashmap_get(users, *m); | |
1272 | if (!i) { | |
1273 | _cleanup_(item_freep) Item *j = NULL; | |
1274 | ||
d5099efc | 1275 | r = hashmap_ensure_allocated(&users, &string_hash_ops); |
a12b0cc3 LP |
1276 | if (r < 0) |
1277 | return log_oom(); | |
1278 | ||
1279 | j = new0(Item, 1); | |
1280 | if (!j) | |
1281 | return log_oom(); | |
1282 | ||
1283 | j->type = ADD_USER; | |
1284 | j->name = strdup(*m); | |
1285 | if (!j->name) | |
1286 | return log_oom(); | |
1287 | ||
1288 | r = hashmap_put(users, j->name, j); | |
1289 | if (r < 0) | |
1290 | return log_oom(); | |
1291 | ||
1292 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
1293 | j = NULL; | |
1294 | } | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
1b992147 LP |
1301 | static bool item_equal(Item *a, Item *b) { |
1302 | assert(a); | |
1303 | assert(b); | |
1304 | ||
1305 | if (a->type != b->type) | |
1306 | return false; | |
1307 | ||
1308 | if (!streq_ptr(a->name, b->name)) | |
1309 | return false; | |
1310 | ||
1311 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1312 | return false; | |
1313 | ||
1314 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1315 | return false; | |
1316 | ||
1317 | if (!streq_ptr(a->description, b->description)) | |
1318 | return false; | |
1319 | ||
1320 | if (a->uid_set != b->uid_set) | |
1321 | return false; | |
1322 | ||
1323 | if (a->uid_set && a->uid != b->uid) | |
1324 | return false; | |
1325 | ||
1326 | if (a->gid_set != b->gid_set) | |
1327 | return false; | |
1328 | ||
1329 | if (a->gid_set && a->gid != b->gid) | |
1330 | return false; | |
1331 | ||
7629889c LP |
1332 | if (!streq_ptr(a->home, b->home)) |
1333 | return false; | |
1334 | ||
1b992147 LP |
1335 | return true; |
1336 | } | |
1337 | ||
1b992147 LP |
1338 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
1339 | ||
1340 | static const Specifier specifier_table[] = { | |
1341 | { 'm', specifier_machine_id, NULL }, | |
1342 | { 'b', specifier_boot_id, NULL }, | |
1343 | { 'H', specifier_host_name, NULL }, | |
1344 | { 'v', specifier_kernel_release, NULL }, | |
1345 | {} | |
1346 | }; | |
1347 | ||
8530dc44 | 1348 | _cleanup_free_ char *action = NULL, *name = NULL, *id = NULL, *resolved_name = NULL, *resolved_id = NULL, *description = NULL, *home = NULL; |
1b992147 LP |
1349 | _cleanup_(item_freep) Item *i = NULL; |
1350 | Item *existing; | |
1351 | Hashmap *h; | |
7629889c LP |
1352 | int r; |
1353 | const char *p; | |
1b992147 LP |
1354 | |
1355 | assert(fname); | |
1356 | assert(line >= 1); | |
1357 | assert(buffer); | |
1358 | ||
7629889c LP |
1359 | /* Parse columns */ |
1360 | p = buffer; | |
12ba2c44 | 1361 | r = extract_many_words(&p, NULL, EXTRACT_QUOTES, &action, &name, &id, &description, &home, NULL); |
7629889c | 1362 | if (r < 0) { |
1b992147 | 1363 | log_error("[%s:%u] Syntax error.", fname, line); |
7629889c LP |
1364 | return r; |
1365 | } | |
1366 | if (r < 2) { | |
1367 | log_error("[%s:%u] Missing action and name columns.", fname, line); | |
1368 | return -EINVAL; | |
1369 | } | |
4b1c1753 | 1370 | if (!isempty(p)) { |
7629889c LP |
1371 | log_error("[%s:%u] Trailing garbage.", fname, line); |
1372 | return -EINVAL; | |
1b992147 LP |
1373 | } |
1374 | ||
7629889c | 1375 | /* Verify action */ |
1b992147 LP |
1376 | if (strlen(action) != 1) { |
1377 | log_error("[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1378 | return -EINVAL; | |
1379 | } | |
1380 | ||
8530dc44 | 1381 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) { |
61233823 | 1382 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, action[0]); |
1b992147 LP |
1383 | return -EBADMSG; |
1384 | } | |
1385 | ||
7629889c | 1386 | /* Verify name */ |
97b11eed DH |
1387 | if (isempty(name) || streq(name, "-")) |
1388 | name = mfree(name); | |
1b992147 | 1389 | |
8530dc44 LP |
1390 | if (name) { |
1391 | r = specifier_printf(name, specifier_table, NULL, &resolved_name); | |
1392 | if (r < 0) { | |
1393 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1394 | return r; | |
1395 | } | |
1396 | ||
1397 | if (!valid_user_group_name(resolved_name)) { | |
1398 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_name); | |
1399 | return -EINVAL; | |
1400 | } | |
1b992147 LP |
1401 | } |
1402 | ||
8530dc44 | 1403 | /* Verify id */ |
97b11eed DH |
1404 | if (isempty(id) || streq(id, "-")) |
1405 | id = mfree(id); | |
7629889c | 1406 | |
8530dc44 LP |
1407 | if (id) { |
1408 | r = specifier_printf(id, specifier_table, NULL, &resolved_id); | |
1409 | if (r < 0) { | |
1410 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1411 | return r; | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | /* Verify description */ | |
97b11eed DH |
1416 | if (isempty(description) || streq(description, "-")) |
1417 | description = mfree(description); | |
1b992147 | 1418 | |
8530dc44 LP |
1419 | if (description) { |
1420 | if (!valid_gecos(description)) { | |
1421 | log_error("[%s:%u] '%s' is not a valid GECOS field.", fname, line, description); | |
1422 | return -EINVAL; | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | /* Verify home */ | |
97b11eed DH |
1427 | if (isempty(home) || streq(home, "-")) |
1428 | home = mfree(home); | |
1b992147 | 1429 | |
8530dc44 LP |
1430 | if (home) { |
1431 | if (!valid_home(home)) { | |
1432 | log_error("[%s:%u] '%s' is not a valid home directory field.", fname, line, home); | |
1433 | return -EINVAL; | |
1434 | } | |
1435 | } | |
1436 | ||
a12b0cc3 | 1437 | switch (action[0]) { |
1b992147 | 1438 | |
8530dc44 LP |
1439 | case ADD_RANGE: |
1440 | if (resolved_name) { | |
1441 | log_error("[%s:%u] Lines of type 'r' don't take a name field.", fname, line); | |
1442 | return -EINVAL; | |
1443 | } | |
1b992147 | 1444 | |
8530dc44 LP |
1445 | if (!resolved_id) { |
1446 | log_error("[%s:%u] Lines of type 'r' require a ID range in the third field.", fname, line); | |
1447 | return -EINVAL; | |
1448 | } | |
1b992147 | 1449 | |
7629889c | 1450 | if (description) { |
8530dc44 | 1451 | log_error("[%s:%u] Lines of type 'r' don't take a GECOS field.", fname, line); |
7629889c LP |
1452 | return -EINVAL; |
1453 | } | |
1454 | ||
1455 | if (home) { | |
8530dc44 | 1456 | log_error("[%s:%u] Lines of type 'r' don't take a home directory field.", fname, line); |
7629889c LP |
1457 | return -EINVAL; |
1458 | } | |
1459 | ||
8530dc44 LP |
1460 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); |
1461 | if (r < 0) { | |
1462 | log_error("[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
a12b0cc3 LP |
1463 | return -EINVAL; |
1464 | } | |
1b992147 | 1465 | |
8530dc44 LP |
1466 | return 0; |
1467 | ||
1468 | case ADD_MEMBER: { | |
1469 | char **l; | |
1470 | ||
1471 | /* Try to extend an existing member or group item */ | |
1472 | if (!name) { | |
1473 | log_error("[%s:%u] Lines of type 'm' require a user name in the second field.", fname, line); | |
1474 | return -EINVAL; | |
1475 | } | |
1476 | ||
1477 | if (!resolved_id) { | |
1478 | log_error("[%s:%u] Lines of type 'm' require a group name in the third field.", fname, line); | |
1479 | return -EINVAL; | |
a12b0cc3 | 1480 | } |
1b992147 | 1481 | |
a12b0cc3 LP |
1482 | if (!valid_user_group_name(resolved_id)) { |
1483 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_id); | |
1484 | return -EINVAL; | |
1485 | } | |
1b992147 | 1486 | |
8530dc44 LP |
1487 | if (description) { |
1488 | log_error("[%s:%u] Lines of type 'm' don't take a GECOS field.", fname, line); | |
1489 | return -EINVAL; | |
1490 | } | |
1491 | ||
1492 | if (home) { | |
1493 | log_error("[%s:%u] Lines of type 'm' don't take a home directory field.", fname, line); | |
1494 | return -EINVAL; | |
1495 | } | |
1496 | ||
d5099efc | 1497 | r = hashmap_ensure_allocated(&members, &string_hash_ops); |
7629889c LP |
1498 | if (r < 0) |
1499 | return log_oom(); | |
a12b0cc3 LP |
1500 | |
1501 | l = hashmap_get(members, resolved_id); | |
1502 | if (l) { | |
1503 | /* A list for this group name already exists, let's append to it */ | |
1504 | r = strv_push(&l, resolved_name); | |
1505 | if (r < 0) | |
1506 | return log_oom(); | |
1507 | ||
1508 | resolved_name = NULL; | |
1509 | ||
1510 | assert_se(hashmap_update(members, resolved_id, l) >= 0); | |
1b992147 | 1511 | } else { |
a12b0cc3 LP |
1512 | /* No list for this group name exists yet, create one */ |
1513 | ||
1514 | l = new0(char *, 2); | |
1515 | if (!l) | |
1516 | return -ENOMEM; | |
1517 | ||
1518 | l[0] = resolved_name; | |
1519 | l[1] = NULL; | |
1b992147 | 1520 | |
a12b0cc3 | 1521 | r = hashmap_put(members, resolved_id, l); |
1b992147 | 1522 | if (r < 0) { |
a12b0cc3 LP |
1523 | free(l); |
1524 | return log_oom(); | |
1b992147 LP |
1525 | } |
1526 | ||
a12b0cc3 | 1527 | resolved_id = resolved_name = NULL; |
1b992147 | 1528 | } |
a12b0cc3 LP |
1529 | |
1530 | return 0; | |
1b992147 LP |
1531 | } |
1532 | ||
a12b0cc3 | 1533 | case ADD_USER: |
8530dc44 LP |
1534 | if (!name) { |
1535 | log_error("[%s:%u] Lines of type 'u' require a user name in the second field.", fname, line); | |
1536 | return -EINVAL; | |
1537 | } | |
1538 | ||
d5099efc | 1539 | r = hashmap_ensure_allocated(&users, &string_hash_ops); |
a12b0cc3 LP |
1540 | if (r < 0) |
1541 | return log_oom(); | |
1542 | ||
1543 | i = new0(Item, 1); | |
1544 | if (!i) | |
1545 | return log_oom(); | |
1546 | ||
8530dc44 LP |
1547 | if (resolved_id) { |
1548 | if (path_is_absolute(resolved_id)) { | |
1549 | i->uid_path = resolved_id; | |
1550 | resolved_id = NULL; | |
a12b0cc3 LP |
1551 | |
1552 | path_kill_slashes(i->uid_path); | |
a12b0cc3 | 1553 | } else { |
8530dc44 | 1554 | r = parse_uid(resolved_id, &i->uid); |
a12b0cc3 LP |
1555 | if (r < 0) { |
1556 | log_error("Failed to parse UID: %s", id); | |
1557 | return -EBADMSG; | |
1558 | } | |
1559 | ||
1560 | i->uid_set = true; | |
1561 | } | |
1562 | } | |
1563 | ||
8530dc44 LP |
1564 | i->description = description; |
1565 | description = NULL; | |
7629889c | 1566 | |
8530dc44 LP |
1567 | i->home = home; |
1568 | home = NULL; | |
a12b0cc3 | 1569 | |
1b992147 | 1570 | h = users; |
a12b0cc3 LP |
1571 | break; |
1572 | ||
1573 | case ADD_GROUP: | |
8530dc44 LP |
1574 | if (!name) { |
1575 | log_error("[%s:%u] Lines of type 'g' require a user name in the second field.", fname, line); | |
1576 | return -EINVAL; | |
1577 | } | |
a12b0cc3 | 1578 | |
7629889c | 1579 | if (description) { |
a12b0cc3 LP |
1580 | log_error("[%s:%u] Lines of type 'g' don't take a GECOS field.", fname, line); |
1581 | return -EINVAL; | |
1582 | } | |
1583 | ||
7629889c LP |
1584 | if (home) { |
1585 | log_error("[%s:%u] Lines of type 'g' don't take a home directory field.", fname, line); | |
1586 | return -EINVAL; | |
1587 | } | |
1588 | ||
d5099efc | 1589 | r = hashmap_ensure_allocated(&groups, &string_hash_ops); |
7629889c LP |
1590 | if (r < 0) |
1591 | return log_oom(); | |
1592 | ||
a12b0cc3 LP |
1593 | i = new0(Item, 1); |
1594 | if (!i) | |
1595 | return log_oom(); | |
1596 | ||
8530dc44 LP |
1597 | if (resolved_id) { |
1598 | if (path_is_absolute(resolved_id)) { | |
1599 | i->gid_path = resolved_id; | |
1600 | resolved_id = NULL; | |
a12b0cc3 LP |
1601 | |
1602 | path_kill_slashes(i->gid_path); | |
1603 | } else { | |
8530dc44 | 1604 | r = parse_gid(resolved_id, &i->gid); |
a12b0cc3 LP |
1605 | if (r < 0) { |
1606 | log_error("Failed to parse GID: %s", id); | |
1607 | return -EBADMSG; | |
1608 | } | |
1609 | ||
1610 | i->gid_set = true; | |
1611 | } | |
1612 | } | |
1613 | ||
1b992147 | 1614 | h = groups; |
a12b0cc3 | 1615 | break; |
8530dc44 | 1616 | |
bce415ed RC |
1617 | default: |
1618 | return -EBADMSG; | |
1b992147 | 1619 | } |
a12b0cc3 LP |
1620 | |
1621 | i->type = action[0]; | |
1622 | i->name = resolved_name; | |
1623 | resolved_name = NULL; | |
1b992147 LP |
1624 | |
1625 | existing = hashmap_get(h, i->name); | |
1626 | if (existing) { | |
1627 | ||
1628 | /* Two identical items are fine */ | |
1629 | if (!item_equal(existing, i)) | |
1630 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->name); | |
1631 | ||
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | r = hashmap_put(h, i->name, i); | |
a12b0cc3 LP |
1636 | if (r < 0) |
1637 | return log_oom(); | |
1b992147 LP |
1638 | |
1639 | i = NULL; | |
1640 | return 0; | |
1641 | } | |
1642 | ||
1643 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
dfc87cbf LP |
1644 | _cleanup_fclose_ FILE *rf = NULL; |
1645 | FILE *f = NULL; | |
1b992147 LP |
1646 | char line[LINE_MAX]; |
1647 | unsigned v = 0; | |
c4640902 | 1648 | int r = 0; |
1b992147 LP |
1649 | |
1650 | assert(fn); | |
1651 | ||
dfc87cbf LP |
1652 | if (streq(fn, "-")) |
1653 | f = stdin; | |
1654 | else { | |
1655 | r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &rf); | |
1656 | if (r < 0) { | |
1657 | if (ignore_enoent && r == -ENOENT) | |
1658 | return 0; | |
1b992147 | 1659 | |
8d3d7072 | 1660 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); |
dfc87cbf LP |
1661 | } |
1662 | ||
1663 | f = rf; | |
1b992147 LP |
1664 | } |
1665 | ||
1666 | FOREACH_LINE(line, f, break) { | |
1667 | char *l; | |
1668 | int k; | |
1669 | ||
1670 | v++; | |
1671 | ||
1672 | l = strstrip(line); | |
4c701096 | 1673 | if (IN_SET(*l, 0, '#')) |
1b992147 LP |
1674 | continue; |
1675 | ||
1676 | k = parse_line(fn, v, l); | |
1677 | if (k < 0 && r == 0) | |
1678 | r = k; | |
1679 | } | |
1680 | ||
1681 | if (ferror(f)) { | |
56f64d95 | 1682 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
1b992147 LP |
1683 | if (r == 0) |
1684 | r = -EIO; | |
1685 | } | |
1686 | ||
1687 | return r; | |
1688 | } | |
1689 | ||
1b992147 LP |
1690 | static void free_database(Hashmap *by_name, Hashmap *by_id) { |
1691 | char *name; | |
1692 | ||
1693 | for (;;) { | |
1694 | name = hashmap_first(by_id); | |
1695 | if (!name) | |
1696 | break; | |
1697 | ||
1698 | hashmap_remove(by_name, name); | |
1699 | ||
1700 | hashmap_steal_first_key(by_id); | |
1701 | free(name); | |
1702 | } | |
1703 | ||
1704 | while ((name = hashmap_steal_first_key(by_name))) | |
1705 | free(name); | |
1706 | ||
1707 | hashmap_free(by_name); | |
1708 | hashmap_free(by_id); | |
1709 | } | |
1710 | ||
601185b4 | 1711 | static void help(void) { |
1b992147 LP |
1712 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1713 | "Creates system user accounts.\n\n" | |
1714 | " -h --help Show this help\n" | |
1715 | " --version Show package version\n" | |
601185b4 ZJS |
1716 | " --root=PATH Operate on an alternate filesystem root\n" |
1717 | , program_invocation_short_name); | |
1b992147 LP |
1718 | } |
1719 | ||
1720 | static int parse_argv(int argc, char *argv[]) { | |
1721 | ||
1722 | enum { | |
1723 | ARG_VERSION = 0x100, | |
1724 | ARG_ROOT, | |
1725 | }; | |
1726 | ||
1727 | static const struct option options[] = { | |
1728 | { "help", no_argument, NULL, 'h' }, | |
1729 | { "version", no_argument, NULL, ARG_VERSION }, | |
1730 | { "root", required_argument, NULL, ARG_ROOT }, | |
1731 | {} | |
1732 | }; | |
1733 | ||
0f474365 | 1734 | int c, r; |
1b992147 LP |
1735 | |
1736 | assert(argc >= 0); | |
1737 | assert(argv); | |
1738 | ||
601185b4 | 1739 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
1740 | |
1741 | switch (c) { | |
1742 | ||
1743 | case 'h': | |
601185b4 ZJS |
1744 | help(); |
1745 | return 0; | |
1b992147 LP |
1746 | |
1747 | case ARG_VERSION: | |
3f6fd1ba | 1748 | return version(); |
1b992147 LP |
1749 | |
1750 | case ARG_ROOT: | |
0f03c2a4 | 1751 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
0f474365 | 1752 | if (r < 0) |
0f03c2a4 | 1753 | return r; |
1b992147 LP |
1754 | break; |
1755 | ||
1756 | case '?': | |
1757 | return -EINVAL; | |
1758 | ||
1759 | default: | |
1760 | assert_not_reached("Unhandled option"); | |
1761 | } | |
1b992147 LP |
1762 | |
1763 | return 1; | |
1764 | } | |
1765 | ||
1766 | int main(int argc, char *argv[]) { | |
1767 | ||
1768 | _cleanup_close_ int lock = -1; | |
1769 | Iterator iterator; | |
1770 | int r, k; | |
1771 | Item *i; | |
a12b0cc3 | 1772 | char *n; |
1b992147 LP |
1773 | |
1774 | r = parse_argv(argc, argv); | |
1775 | if (r <= 0) | |
1776 | goto finish; | |
1777 | ||
1778 | log_set_target(LOG_TARGET_AUTO); | |
1779 | log_parse_environment(); | |
1780 | log_open(); | |
1781 | ||
1782 | umask(0022); | |
1783 | ||
c3dacc8b | 1784 | r = mac_selinux_init(); |
9f1c1940 | 1785 | if (r < 0) { |
da927ba9 | 1786 | log_error_errno(r, "SELinux setup failed: %m"); |
9f1c1940 ZJS |
1787 | goto finish; |
1788 | } | |
1b992147 LP |
1789 | |
1790 | if (optind < argc) { | |
1791 | int j; | |
1792 | ||
1793 | for (j = optind; j < argc; j++) { | |
1794 | k = read_config_file(argv[j], false); | |
1795 | if (k < 0 && r == 0) | |
1796 | r = k; | |
1797 | } | |
1798 | } else { | |
1799 | _cleanup_strv_free_ char **files = NULL; | |
1800 | char **f; | |
1801 | ||
b5084605 | 1802 | r = conf_files_list_nulstr(&files, ".conf", arg_root, 0, conf_file_dirs); |
1b992147 | 1803 | if (r < 0) { |
da927ba9 | 1804 | log_error_errno(r, "Failed to enumerate sysusers.d files: %m"); |
1b992147 LP |
1805 | goto finish; |
1806 | } | |
1807 | ||
1808 | STRV_FOREACH(f, files) { | |
1809 | k = read_config_file(*f, true); | |
1810 | if (k < 0 && r == 0) | |
1811 | r = k; | |
1812 | } | |
1813 | } | |
1814 | ||
fe102d6a LP |
1815 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection |
1816 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
1817 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
1818 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
1819 | * /etc. */ | |
1820 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) { | |
1821 | r = log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
1822 | goto finish; | |
1823 | } | |
1824 | ||
8530dc44 LP |
1825 | if (!uid_range) { |
1826 | /* Default to default range of 1..SYSTEMD_UID_MAX */ | |
1827 | r = uid_range_add(&uid_range, &n_uid_range, 1, SYSTEM_UID_MAX); | |
1828 | if (r < 0) { | |
1829 | log_oom(); | |
1830 | goto finish; | |
1831 | } | |
1832 | } | |
1833 | ||
a12b0cc3 LP |
1834 | r = add_implicit(); |
1835 | if (r < 0) | |
1836 | goto finish; | |
1837 | ||
e929bee0 | 1838 | lock = take_etc_passwd_lock(arg_root); |
1b992147 | 1839 | if (lock < 0) { |
da927ba9 | 1840 | log_error_errno(lock, "Failed to take lock: %m"); |
1b992147 LP |
1841 | goto finish; |
1842 | } | |
1843 | ||
1844 | r = load_user_database(); | |
1845 | if (r < 0) { | |
da927ba9 | 1846 | log_error_errno(r, "Failed to load user database: %m"); |
1b992147 LP |
1847 | goto finish; |
1848 | } | |
1849 | ||
1850 | r = load_group_database(); | |
1851 | if (r < 0) { | |
da927ba9 | 1852 | log_error_errno(r, "Failed to read group database: %m"); |
1b992147 LP |
1853 | goto finish; |
1854 | } | |
1855 | ||
1856 | HASHMAP_FOREACH(i, groups, iterator) | |
1857 | process_item(i); | |
1858 | ||
1859 | HASHMAP_FOREACH(i, users, iterator) | |
1860 | process_item(i); | |
1861 | ||
1862 | r = write_files(); | |
1863 | if (r < 0) | |
da927ba9 | 1864 | log_error_errno(r, "Failed to write files: %m"); |
1b992147 LP |
1865 | |
1866 | finish: | |
1867 | while ((i = hashmap_steal_first(groups))) | |
1868 | item_free(i); | |
1869 | ||
1870 | while ((i = hashmap_steal_first(users))) | |
1871 | item_free(i); | |
1872 | ||
a12b0cc3 LP |
1873 | while ((n = hashmap_first_key(members))) { |
1874 | strv_free(hashmap_steal_first(members)); | |
1875 | free(n); | |
1876 | } | |
1877 | ||
1b992147 LP |
1878 | hashmap_free(groups); |
1879 | hashmap_free(users); | |
a12b0cc3 | 1880 | hashmap_free(members); |
1b992147 LP |
1881 | hashmap_free(todo_uids); |
1882 | hashmap_free(todo_gids); | |
1883 | ||
1884 | free_database(database_user, database_uid); | |
1885 | free_database(database_group, database_gid); | |
1886 | ||
1887 | free(arg_root); | |
1888 | ||
1889 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1890 | } |