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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; |
7b1aaf66 | 62 | char *shell; |
1b992147 LP |
63 | |
64 | gid_t gid; | |
65 | uid_t uid; | |
66 | ||
67 | bool gid_set:1; | |
b9ee05c2 MV |
68 | // id_set_strict means that the group with the specified gid must |
69 | // exist and that the check if a uid clashes with a gid is skipped | |
70 | bool id_set_strict:1; | |
1b992147 LP |
71 | bool uid_set:1; |
72 | ||
c1b6b04f KS |
73 | bool todo_user:1; |
74 | bool todo_group:1; | |
1b992147 LP |
75 | } Item; |
76 | ||
77 | static char *arg_root = NULL; | |
1b600bd5 | 78 | static bool arg_inline = false; |
1b992147 | 79 | |
75eb6154 | 80 | static const char conf_file_dirs[] = CONF_PATHS_NULSTR("sysusers.d"); |
1b992147 | 81 | |
5bc9c980 MV |
82 | static OrderedHashmap *users = NULL, *groups = NULL; |
83 | static OrderedHashmap *todo_uids = NULL, *todo_gids = NULL; | |
84 | static OrderedHashmap *members = NULL; | |
1b992147 LP |
85 | |
86 | static Hashmap *database_uid = NULL, *database_user = NULL; | |
87 | static Hashmap *database_gid = NULL, *database_group = NULL; | |
88 | ||
fed1e721 | 89 | static uid_t search_uid = UID_INVALID; |
8530dc44 LP |
90 | static UidRange *uid_range = NULL; |
91 | static unsigned n_uid_range = 0; | |
1b992147 | 92 | |
1b992147 LP |
93 | static int load_user_database(void) { |
94 | _cleanup_fclose_ FILE *f = NULL; | |
95 | const char *passwd_path; | |
96 | struct passwd *pw; | |
97 | int r; | |
98 | ||
1d13f648 | 99 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); |
1b992147 LP |
100 | f = fopen(passwd_path, "re"); |
101 | if (!f) | |
102 | return errno == ENOENT ? 0 : -errno; | |
103 | ||
d5099efc | 104 | r = hashmap_ensure_allocated(&database_user, &string_hash_ops); |
1b992147 LP |
105 | if (r < 0) |
106 | return r; | |
107 | ||
d5099efc | 108 | r = hashmap_ensure_allocated(&database_uid, NULL); |
1b992147 LP |
109 | if (r < 0) |
110 | return r; | |
111 | ||
112 | errno = 0; | |
113 | while ((pw = fgetpwent(f))) { | |
114 | char *n; | |
115 | int k, q; | |
116 | ||
117 | n = strdup(pw->pw_name); | |
118 | if (!n) | |
119 | return -ENOMEM; | |
120 | ||
121 | k = hashmap_put(database_user, n, UID_TO_PTR(pw->pw_uid)); | |
122 | if (k < 0 && k != -EEXIST) { | |
123 | free(n); | |
124 | return k; | |
125 | } | |
126 | ||
127 | q = hashmap_put(database_uid, UID_TO_PTR(pw->pw_uid), n); | |
128 | if (q < 0 && q != -EEXIST) { | |
129 | if (k < 0) | |
130 | free(n); | |
131 | return q; | |
132 | } | |
133 | ||
134 | if (q < 0 && k < 0) | |
135 | free(n); | |
136 | ||
137 | errno = 0; | |
138 | } | |
139 | if (!IN_SET(errno, 0, ENOENT)) | |
140 | return -errno; | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
145 | static int load_group_database(void) { | |
146 | _cleanup_fclose_ FILE *f = NULL; | |
147 | const char *group_path; | |
148 | struct group *gr; | |
149 | int r; | |
150 | ||
1d13f648 | 151 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
152 | f = fopen(group_path, "re"); |
153 | if (!f) | |
154 | return errno == ENOENT ? 0 : -errno; | |
155 | ||
d5099efc | 156 | r = hashmap_ensure_allocated(&database_group, &string_hash_ops); |
1b992147 LP |
157 | if (r < 0) |
158 | return r; | |
159 | ||
d5099efc | 160 | r = hashmap_ensure_allocated(&database_gid, NULL); |
1b992147 LP |
161 | if (r < 0) |
162 | return r; | |
163 | ||
164 | errno = 0; | |
165 | while ((gr = fgetgrent(f))) { | |
166 | char *n; | |
167 | int k, q; | |
168 | ||
169 | n = strdup(gr->gr_name); | |
170 | if (!n) | |
171 | return -ENOMEM; | |
172 | ||
173 | k = hashmap_put(database_group, n, GID_TO_PTR(gr->gr_gid)); | |
174 | if (k < 0 && k != -EEXIST) { | |
175 | free(n); | |
176 | return k; | |
177 | } | |
178 | ||
179 | q = hashmap_put(database_gid, GID_TO_PTR(gr->gr_gid), n); | |
180 | if (q < 0 && q != -EEXIST) { | |
181 | if (k < 0) | |
182 | free(n); | |
183 | return q; | |
184 | } | |
185 | ||
186 | if (q < 0 && k < 0) | |
187 | free(n); | |
188 | ||
189 | errno = 0; | |
190 | } | |
191 | if (!IN_SET(errno, 0, ENOENT)) | |
192 | return -errno; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
9f1c1940 ZJS |
197 | static int make_backup(const char *target, const char *x) { |
198 | _cleanup_close_ int src = -1; | |
199 | _cleanup_fclose_ FILE *dst = NULL; | |
0a12bb1e EV |
200 | _cleanup_free_ char *temp = NULL; |
201 | char *backup; | |
1b992147 LP |
202 | struct timespec ts[2]; |
203 | struct stat st; | |
204 | int r; | |
205 | ||
206 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
207 | if (src < 0) { | |
208 | if (errno == ENOENT) /* No backup necessary... */ | |
209 | return 0; | |
210 | ||
211 | return -errno; | |
212 | } | |
213 | ||
214 | if (fstat(src, &st) < 0) | |
215 | return -errno; | |
216 | ||
9f1c1940 ZJS |
217 | r = fopen_temporary_label(target, x, &dst, &temp); |
218 | if (r < 0) | |
219 | return r; | |
1b992147 | 220 | |
1c876927 | 221 | r = copy_bytes(src, fileno(dst), (uint64_t) -1, COPY_REFLINK); |
1b992147 LP |
222 | if (r < 0) |
223 | goto fail; | |
224 | ||
9f1c1940 ZJS |
225 | /* Don't fail on chmod() or chown(). If it stays owned by us |
226 | * and/or unreadable by others, then it isn't too bad... */ | |
227 | ||
63c372cb | 228 | backup = strjoina(x, "-"); |
9f1c1940 | 229 | |
1b992147 | 230 | /* Copy over the access mask */ |
9f1c1940 | 231 | if (fchmod(fileno(dst), st.st_mode & 07777) < 0) |
56f64d95 | 232 | log_warning_errno(errno, "Failed to change mode on %s: %m", backup); |
1b992147 | 233 | |
9f1c1940 | 234 | if (fchown(fileno(dst), st.st_uid, st.st_gid)< 0) |
56f64d95 | 235 | log_warning_errno(errno, "Failed to change ownership of %s: %m", backup); |
1b992147 LP |
236 | |
237 | ts[0] = st.st_atim; | |
238 | ts[1] = st.st_mtim; | |
f06863bd | 239 | if (futimens(fileno(dst), ts) < 0) |
56f64d95 | 240 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 241 | |
0675e94a AJ |
242 | r = fflush_sync_and_check(dst); |
243 | if (r < 0) | |
244 | goto fail; | |
245 | ||
246 | if (rename(temp, backup) < 0) { | |
247 | r = -errno; | |
1b992147 | 248 | goto fail; |
0675e94a | 249 | } |
1b992147 LP |
250 | |
251 | return 0; | |
252 | ||
253 | fail: | |
254 | unlink(temp); | |
255 | return r; | |
256 | } | |
257 | ||
a12b0cc3 LP |
258 | static int putgrent_with_members(const struct group *gr, FILE *group) { |
259 | char **a; | |
260 | ||
261 | assert(gr); | |
262 | assert(group); | |
263 | ||
5bc9c980 | 264 | a = ordered_hashmap_get(members, gr->gr_name); |
a12b0cc3 LP |
265 | if (a) { |
266 | _cleanup_strv_free_ char **l = NULL; | |
267 | bool added = false; | |
268 | char **i; | |
269 | ||
270 | l = strv_copy(gr->gr_mem); | |
271 | if (!l) | |
272 | return -ENOMEM; | |
273 | ||
274 | STRV_FOREACH(i, a) { | |
275 | if (strv_find(l, *i)) | |
276 | continue; | |
277 | ||
278 | if (strv_extend(&l, *i) < 0) | |
279 | return -ENOMEM; | |
280 | ||
281 | added = true; | |
282 | } | |
283 | ||
284 | if (added) { | |
285 | struct group t; | |
286 | ||
287 | strv_uniq(l); | |
288 | strv_sort(l); | |
289 | ||
290 | t = *gr; | |
291 | t.gr_mem = l; | |
292 | ||
293 | errno = 0; | |
294 | if (putgrent(&t, group) != 0) | |
f5e5c28f | 295 | return errno > 0 ? -errno : -EIO; |
a12b0cc3 LP |
296 | |
297 | return 1; | |
298 | } | |
299 | } | |
300 | ||
301 | errno = 0; | |
302 | if (putgrent(gr, group) != 0) | |
f5e5c28f | 303 | return errno > 0 ? -errno : -EIO; |
a12b0cc3 LP |
304 | |
305 | return 0; | |
306 | } | |
307 | ||
349cc4a5 | 308 | #if ENABLE_GSHADOW |
9ab315cc LP |
309 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { |
310 | char **a; | |
311 | ||
312 | assert(sg); | |
313 | assert(gshadow); | |
314 | ||
5bc9c980 | 315 | a = ordered_hashmap_get(members, sg->sg_namp); |
9ab315cc LP |
316 | if (a) { |
317 | _cleanup_strv_free_ char **l = NULL; | |
318 | bool added = false; | |
319 | char **i; | |
320 | ||
321 | l = strv_copy(sg->sg_mem); | |
322 | if (!l) | |
323 | return -ENOMEM; | |
324 | ||
325 | STRV_FOREACH(i, a) { | |
326 | if (strv_find(l, *i)) | |
327 | continue; | |
328 | ||
329 | if (strv_extend(&l, *i) < 0) | |
330 | return -ENOMEM; | |
331 | ||
332 | added = true; | |
333 | } | |
334 | ||
335 | if (added) { | |
336 | struct sgrp t; | |
337 | ||
338 | strv_uniq(l); | |
339 | strv_sort(l); | |
340 | ||
341 | t = *sg; | |
342 | t.sg_mem = l; | |
343 | ||
344 | errno = 0; | |
345 | if (putsgent(&t, gshadow) != 0) | |
f5e5c28f | 346 | return errno > 0 ? -errno : -EIO; |
9ab315cc LP |
347 | |
348 | return 1; | |
349 | } | |
350 | } | |
351 | ||
352 | errno = 0; | |
353 | if (putsgent(sg, gshadow) != 0) | |
f5e5c28f | 354 | return errno > 0 ? -errno : -EIO; |
9ab315cc LP |
355 | |
356 | return 0; | |
357 | } | |
b14e1b43 | 358 | #endif |
9ab315cc | 359 | |
fff19499 LP |
360 | static int sync_rights(FILE *from, FILE *to) { |
361 | struct stat st; | |
362 | ||
363 | if (fstat(fileno(from), &st) < 0) | |
364 | return -errno; | |
365 | ||
366 | if (fchmod(fileno(to), st.st_mode & 07777) < 0) | |
367 | return -errno; | |
368 | ||
369 | if (fchown(fileno(to), st.st_uid, st.st_gid) < 0) | |
370 | return -errno; | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
c02e7b1e SW |
375 | static int rename_and_apply_smack(const char *temp_path, const char *dest_path) { |
376 | int r = 0; | |
377 | if (rename(temp_path, dest_path) < 0) | |
378 | return -errno; | |
379 | ||
380 | #ifdef SMACK_RUN_LABEL | |
381 | r = mac_smack_apply(dest_path, SMACK_ATTR_ACCESS, SMACK_FLOOR_LABEL); | |
382 | if (r < 0) | |
383 | return r; | |
384 | #endif | |
385 | return r; | |
386 | } | |
387 | ||
7b1aaf66 ZJS |
388 | static const char* default_shell(uid_t uid) { |
389 | return uid == 0 ? "/bin/sh" : "/sbin/nologin"; | |
390 | } | |
391 | ||
b20b0b66 FB |
392 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { |
393 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
1dd98a71 | 394 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
1b992147 LP |
395 | Iterator iterator; |
396 | Item *i; | |
397 | int r; | |
398 | ||
5bc9c980 | 399 | if (ordered_hashmap_size(todo_uids) == 0) |
b20b0b66 | 400 | return 0; |
1b992147 | 401 | |
b20b0b66 FB |
402 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
403 | if (r < 0) | |
404 | return r; | |
405 | ||
406 | original = fopen(passwd_path, "re"); | |
407 | if (original) { | |
408 | struct passwd *pw; | |
409 | ||
410 | r = sync_rights(original, passwd); | |
1b992147 | 411 | if (r < 0) |
1dd98a71 | 412 | return r; |
1b992147 | 413 | |
b20b0b66 FB |
414 | errno = 0; |
415 | while ((pw = fgetpwent(original))) { | |
1b992147 | 416 | |
5bc9c980 | 417 | i = ordered_hashmap_get(users, pw->pw_name); |
b20b0b66 FB |
418 | if (i && i->todo_user) { |
419 | log_error("%s: User \"%s\" already exists.", passwd_path, pw->pw_name); | |
1dd98a71 | 420 | return -EEXIST; |
b20b0b66 | 421 | } |
e3c72c21 | 422 | |
5bc9c980 | 423 | if (ordered_hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) { |
b20b0b66 | 424 | log_error("%s: Detected collision for UID " UID_FMT ".", passwd_path, pw->pw_uid); |
1dd98a71 | 425 | return -EEXIST; |
1b992147 | 426 | } |
b20b0b66 FB |
427 | |
428 | errno = 0; | |
1dd98a71 FB |
429 | if (putpwent(pw, passwd) < 0) |
430 | return errno ? -errno : -EIO; | |
1b992147 | 431 | |
b20b0b66 FB |
432 | errno = 0; |
433 | } | |
1dd98a71 FB |
434 | if (!IN_SET(errno, 0, ENOENT)) |
435 | return -errno; | |
436 | ||
437 | } else { | |
438 | if (errno != ENOENT) | |
439 | return -errno; | |
440 | if (fchmod(fileno(passwd), 0644) < 0) | |
441 | return -errno; | |
b20b0b66 FB |
442 | } |
443 | ||
5bc9c980 | 444 | ORDERED_HASHMAP_FOREACH(i, todo_uids, iterator) { |
b20b0b66 FB |
445 | struct passwd n = { |
446 | .pw_name = i->name, | |
447 | .pw_uid = i->uid, | |
448 | .pw_gid = i->gid, | |
449 | .pw_gecos = i->description, | |
1b992147 | 450 | |
b20b0b66 FB |
451 | /* "x" means the password is stored in the shadow file */ |
452 | .pw_passwd = (char*) "x", | |
a12b0cc3 | 453 | |
b20b0b66 FB |
454 | /* We default to the root directory as home */ |
455 | .pw_dir = i->home ? i->home : (char*) "/", | |
1b992147 | 456 | |
b20b0b66 FB |
457 | /* Initialize the shell to nologin, with one exception: |
458 | * for root we patch in something special */ | |
7b1aaf66 | 459 | .pw_shell = i->shell ?: (char*) default_shell(i->uid), |
b20b0b66 | 460 | }; |
9ab315cc | 461 | |
b20b0b66 | 462 | errno = 0; |
1dd98a71 FB |
463 | if (putpwent(&n, passwd) != 0) |
464 | return errno ? -errno : -EIO; | |
b20b0b66 FB |
465 | } |
466 | ||
467 | r = fflush_and_check(passwd); | |
468 | if (r < 0) | |
1dd98a71 | 469 | return r; |
b20b0b66 FB |
470 | |
471 | *tmpfile = passwd; | |
472 | *tmpfile_path = passwd_tmp; | |
473 | passwd = NULL; | |
474 | passwd_tmp = NULL; | |
475 | return 0; | |
b20b0b66 FB |
476 | } |
477 | ||
478 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
479 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
1dd98a71 | 480 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
b20b0b66 FB |
481 | Iterator iterator; |
482 | long lstchg; | |
483 | Item *i; | |
484 | int r; | |
485 | ||
5bc9c980 | 486 | if (ordered_hashmap_size(todo_uids) == 0) |
b20b0b66 FB |
487 | return 0; |
488 | ||
489 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); | |
490 | if (r < 0) | |
491 | return r; | |
9ab315cc | 492 | |
b20b0b66 FB |
493 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); |
494 | ||
495 | original = fopen(shadow_path, "re"); | |
496 | if (original) { | |
497 | struct spwd *sp; | |
498 | ||
499 | r = sync_rights(original, shadow); | |
9ab315cc | 500 | if (r < 0) |
1dd98a71 | 501 | return r; |
9ab315cc | 502 | |
b20b0b66 FB |
503 | errno = 0; |
504 | while ((sp = fgetspent(original))) { | |
9ab315cc | 505 | |
5bc9c980 | 506 | i = ordered_hashmap_get(users, sp->sp_namp); |
b20b0b66 FB |
507 | if (i && i->todo_user) { |
508 | /* we will update the existing entry */ | |
509 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 510 | |
b20b0b66 FB |
511 | /* only the /etc/shadow stage is left, so we can |
512 | * safely remove the item from the todo set */ | |
513 | i->todo_user = false; | |
5bc9c980 | 514 | ordered_hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); |
9ab315cc | 515 | } |
b20b0b66 FB |
516 | |
517 | errno = 0; | |
1dd98a71 FB |
518 | if (putspent(sp, shadow) < 0) |
519 | return errno ? -errno : -EIO; | |
9ab315cc | 520 | |
b20b0b66 FB |
521 | errno = 0; |
522 | } | |
1dd98a71 FB |
523 | if (!IN_SET(errno, 0, ENOENT)) |
524 | return -errno; | |
525 | ||
526 | } else { | |
527 | if (errno != ENOENT) | |
528 | return -errno; | |
529 | if (fchmod(fileno(shadow), 0000) < 0) | |
530 | return -errno; | |
b20b0b66 | 531 | } |
9ab315cc | 532 | |
5bc9c980 | 533 | ORDERED_HASHMAP_FOREACH(i, todo_uids, iterator) { |
b20b0b66 FB |
534 | struct spwd n = { |
535 | .sp_namp = i->name, | |
536 | .sp_pwdp = (char*) "!!", | |
537 | .sp_lstchg = lstchg, | |
538 | .sp_min = -1, | |
539 | .sp_max = -1, | |
540 | .sp_warn = -1, | |
541 | .sp_inact = -1, | |
542 | .sp_expire = -1, | |
543 | .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */ | |
544 | }; | |
9ab315cc | 545 | |
b20b0b66 | 546 | errno = 0; |
1dd98a71 FB |
547 | if (putspent(&n, shadow) != 0) |
548 | return errno ? -errno : -EIO; | |
1b992147 LP |
549 | } |
550 | ||
0675e94a | 551 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 552 | if (r < 0) |
1dd98a71 | 553 | return r; |
b20b0b66 FB |
554 | |
555 | *tmpfile = shadow; | |
556 | *tmpfile_path = shadow_tmp; | |
557 | shadow = NULL; | |
558 | shadow_tmp = NULL; | |
559 | return 0; | |
b20b0b66 | 560 | } |
1b992147 | 561 | |
b20b0b66 FB |
562 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { |
563 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
1dd98a71 | 564 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 FB |
565 | bool group_changed = false; |
566 | Iterator iterator; | |
567 | Item *i; | |
568 | int r; | |
1b992147 | 569 | |
5bc9c980 | 570 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) |
b20b0b66 | 571 | return 0; |
e3c72c21 | 572 | |
b20b0b66 FB |
573 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
574 | if (r < 0) | |
575 | return r; | |
576 | ||
577 | original = fopen(group_path, "re"); | |
578 | if (original) { | |
579 | struct group *gr; | |
580 | ||
581 | r = sync_rights(original, group); | |
582 | if (r < 0) | |
1dd98a71 | 583 | return r; |
b20b0b66 FB |
584 | |
585 | errno = 0; | |
586 | while ((gr = fgetgrent(original))) { | |
587 | /* Safety checks against name and GID collisions. Normally, | |
588 | * this should be unnecessary, but given that we look at the | |
589 | * entries anyway here, let's make an extra verification | |
590 | * step that we don't generate duplicate entries. */ | |
591 | ||
5bc9c980 | 592 | i = ordered_hashmap_get(groups, gr->gr_name); |
b20b0b66 FB |
593 | if (i && i->todo_group) { |
594 | log_error("%s: Group \"%s\" already exists.", group_path, gr->gr_name); | |
1dd98a71 | 595 | return -EEXIST; |
1b992147 | 596 | } |
b20b0b66 | 597 | |
5bc9c980 | 598 | if (ordered_hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) { |
b20b0b66 | 599 | log_error("%s: Detected collision for GID " GID_FMT ".", group_path, gr->gr_gid); |
1dd98a71 | 600 | return -EEXIST; |
1b992147 LP |
601 | } |
602 | ||
b20b0b66 FB |
603 | r = putgrent_with_members(gr, group); |
604 | if (r < 0) | |
1dd98a71 | 605 | return r; |
b20b0b66 FB |
606 | if (r > 0) |
607 | group_changed = true; | |
608 | ||
609 | errno = 0; | |
610 | } | |
1dd98a71 FB |
611 | if (!IN_SET(errno, 0, ENOENT)) |
612 | return -errno; | |
613 | ||
614 | } else { | |
615 | if (errno != ENOENT) | |
616 | return -errno; | |
617 | if (fchmod(fileno(group), 0644) < 0) | |
618 | return -errno; | |
b20b0b66 | 619 | } |
7629889c | 620 | |
5bc9c980 | 621 | ORDERED_HASHMAP_FOREACH(i, todo_gids, iterator) { |
b20b0b66 FB |
622 | struct group n = { |
623 | .gr_name = i->name, | |
624 | .gr_gid = i->gid, | |
625 | .gr_passwd = (char*) "x", | |
626 | }; | |
1b992147 | 627 | |
b20b0b66 FB |
628 | r = putgrent_with_members(&n, group); |
629 | if (r < 0) | |
1dd98a71 | 630 | return r; |
7629889c | 631 | |
b20b0b66 FB |
632 | group_changed = true; |
633 | } | |
1b992147 | 634 | |
0675e94a | 635 | r = fflush_sync_and_check(group); |
b20b0b66 | 636 | if (r < 0) |
1dd98a71 | 637 | return r; |
1b992147 | 638 | |
b20b0b66 FB |
639 | if (group_changed) { |
640 | *tmpfile = group; | |
641 | *tmpfile_path = group_tmp; | |
642 | group = NULL; | |
643 | group_tmp = NULL; | |
644 | } | |
645 | return 0; | |
b20b0b66 FB |
646 | } |
647 | ||
648 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
349cc4a5 | 649 | #if ENABLE_GSHADOW |
b20b0b66 | 650 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 651 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 FB |
652 | bool group_changed = false; |
653 | Iterator iterator; | |
654 | Item *i; | |
655 | int r; | |
656 | ||
5bc9c980 | 657 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) |
b20b0b66 FB |
658 | return 0; |
659 | ||
660 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); | |
661 | if (r < 0) | |
662 | return r; | |
9ab315cc | 663 | |
b20b0b66 FB |
664 | original = fopen(gshadow_path, "re"); |
665 | if (original) { | |
666 | struct sgrp *sg; | |
667 | ||
668 | r = sync_rights(original, gshadow); | |
1b992147 | 669 | if (r < 0) |
1dd98a71 | 670 | return r; |
9ab315cc | 671 | |
b20b0b66 FB |
672 | errno = 0; |
673 | while ((sg = fgetsgent(original))) { | |
c5abf225 | 674 | |
5bc9c980 | 675 | i = ordered_hashmap_get(groups, sg->sg_namp); |
b20b0b66 FB |
676 | if (i && i->todo_group) { |
677 | log_error("%s: Group \"%s\" already exists.", gshadow_path, sg->sg_namp); | |
1dd98a71 | 678 | return -EEXIST; |
b20b0b66 | 679 | } |
9ab315cc | 680 | |
b20b0b66 | 681 | r = putsgent_with_members(sg, gshadow); |
fff19499 | 682 | if (r < 0) |
1dd98a71 | 683 | return r; |
b20b0b66 FB |
684 | if (r > 0) |
685 | group_changed = true; | |
e3c72c21 | 686 | |
9ab315cc | 687 | errno = 0; |
b20b0b66 | 688 | } |
1dd98a71 FB |
689 | if (!IN_SET(errno, 0, ENOENT)) |
690 | return -errno; | |
691 | ||
692 | } else { | |
693 | if (errno != ENOENT) | |
694 | return -errno; | |
695 | if (fchmod(fileno(gshadow), 0000) < 0) | |
696 | return -errno; | |
b20b0b66 | 697 | } |
9ab315cc | 698 | |
5bc9c980 | 699 | ORDERED_HASHMAP_FOREACH(i, todo_gids, iterator) { |
b20b0b66 FB |
700 | struct sgrp n = { |
701 | .sg_namp = i->name, | |
702 | .sg_passwd = (char*) "!!", | |
703 | }; | |
9ab315cc | 704 | |
b20b0b66 | 705 | r = putsgent_with_members(&n, gshadow); |
9ab315cc | 706 | if (r < 0) |
1dd98a71 | 707 | return r; |
b20b0b66 FB |
708 | |
709 | group_changed = true; | |
9ab315cc LP |
710 | } |
711 | ||
0675e94a | 712 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 713 | if (r < 0) |
1dd98a71 | 714 | return r; |
b20b0b66 | 715 | |
9ab315cc | 716 | if (group_changed) { |
b20b0b66 FB |
717 | *tmpfile = gshadow; |
718 | *tmpfile_path = gshadow_tmp; | |
719 | gshadow = NULL; | |
720 | gshadow_tmp = NULL; | |
721 | } | |
722 | return 0; | |
b14e1b43 FB |
723 | #else |
724 | return 0; | |
725 | #endif | |
b20b0b66 FB |
726 | } |
727 | ||
728 | static int write_files(void) { | |
b20b0b66 | 729 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 730 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
b20b0b66 FB |
731 | const char *passwd_path = NULL, *group_path = NULL, *shadow_path = NULL, *gshadow_path = NULL; |
732 | int r; | |
733 | ||
734 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
735 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
736 | group_path = prefix_roota(arg_root, "/etc/group"); | |
737 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
738 | ||
739 | r = write_temporary_group(group_path, &group, &group_tmp); | |
740 | if (r < 0) | |
1dd98a71 | 741 | return r; |
b20b0b66 FB |
742 | |
743 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
744 | if (r < 0) | |
1dd98a71 | 745 | return r; |
b20b0b66 FB |
746 | |
747 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
748 | if (r < 0) | |
1dd98a71 | 749 | return r; |
b20b0b66 FB |
750 | |
751 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
752 | if (r < 0) | |
1dd98a71 | 753 | return r; |
b20b0b66 FB |
754 | |
755 | /* Make a backup of the old files */ | |
756 | if (group) { | |
757 | r = make_backup("/etc/group", group_path); | |
758 | if (r < 0) | |
1dd98a71 | 759 | return r; |
b20b0b66 FB |
760 | } |
761 | if (gshadow) { | |
762 | r = make_backup("/etc/gshadow", gshadow_path); | |
763 | if (r < 0) | |
1dd98a71 | 764 | return r; |
1b992147 LP |
765 | } |
766 | ||
767 | if (passwd) { | |
9f1c1940 | 768 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 769 | if (r < 0) |
1dd98a71 | 770 | return r; |
1b992147 | 771 | } |
9ab315cc LP |
772 | if (shadow) { |
773 | r = make_backup("/etc/shadow", shadow_path); | |
774 | if (r < 0) | |
1dd98a71 | 775 | return r; |
9ab315cc | 776 | } |
1b992147 LP |
777 | |
778 | /* And make the new files count */ | |
b20b0b66 FB |
779 | if (group) { |
780 | r = rename_and_apply_smack(group_tmp, group_path); | |
781 | if (r < 0) | |
1dd98a71 | 782 | return r; |
9ab315cc | 783 | |
b20b0b66 FB |
784 | group_tmp = mfree(group_tmp); |
785 | } | |
786 | if (gshadow) { | |
787 | r = rename_and_apply_smack(gshadow_tmp, gshadow_path); | |
788 | if (r < 0) | |
1dd98a71 | 789 | return r; |
1b992147 | 790 | |
b20b0b66 | 791 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
792 | } |
793 | ||
794 | if (passwd) { | |
c02e7b1e SW |
795 | r = rename_and_apply_smack(passwd_tmp, passwd_path); |
796 | if (r < 0) | |
1dd98a71 | 797 | return r; |
1b992147 | 798 | |
97b11eed | 799 | passwd_tmp = mfree(passwd_tmp); |
1b992147 | 800 | } |
9ab315cc | 801 | if (shadow) { |
c02e7b1e SW |
802 | r = rename_and_apply_smack(shadow_tmp, shadow_path); |
803 | if (r < 0) | |
1dd98a71 | 804 | return r; |
9ab315cc | 805 | |
97b11eed | 806 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 807 | } |
1b992147 | 808 | |
1dd98a71 | 809 | return 0; |
1b992147 LP |
810 | } |
811 | ||
b9ee05c2 | 812 | static int uid_is_ok(uid_t uid, const char *name, bool check_with_gid) { |
1b992147 LP |
813 | struct passwd *p; |
814 | struct group *g; | |
815 | const char *n; | |
816 | Item *i; | |
817 | ||
818 | /* Let's see if we already have assigned the UID a second time */ | |
5bc9c980 | 819 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(uid))) |
1b992147 LP |
820 | return 0; |
821 | ||
822 | /* Try to avoid using uids that are already used by a group | |
823 | * that doesn't have the same name as our new user. */ | |
b9ee05c2 MV |
824 | if (check_with_gid) { |
825 | i = ordered_hashmap_get(todo_gids, GID_TO_PTR(uid)); | |
826 | if (i && !streq(i->name, name)) | |
827 | return 0; | |
828 | } | |
1b992147 LP |
829 | |
830 | /* Let's check the files directly */ | |
831 | if (hashmap_contains(database_uid, UID_TO_PTR(uid))) | |
832 | return 0; | |
833 | ||
b9ee05c2 MV |
834 | if (check_with_gid) { |
835 | n = hashmap_get(database_gid, GID_TO_PTR(uid)); | |
836 | if (n && !streq(n, name)) | |
837 | return 0; | |
838 | } | |
1b992147 LP |
839 | |
840 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
841 | if (!arg_root) { | |
842 | errno = 0; | |
843 | p = getpwuid(uid); | |
844 | if (p) | |
845 | return 0; | |
b0284aba | 846 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
847 | return -errno; |
848 | ||
b9ee05c2 MV |
849 | if (check_with_gid) { |
850 | errno = 0; | |
851 | g = getgrgid((gid_t) uid); | |
852 | if (g) { | |
853 | if (!streq(g->gr_name, name)) | |
854 | return 0; | |
855 | } else if (!IN_SET(errno, 0, ENOENT)) | |
856 | return -errno; | |
857 | } | |
1b992147 LP |
858 | } |
859 | ||
860 | return 1; | |
861 | } | |
862 | ||
863 | static int root_stat(const char *p, struct stat *st) { | |
864 | const char *fix; | |
865 | ||
1d13f648 | 866 | fix = prefix_roota(arg_root, p); |
1b992147 LP |
867 | if (stat(fix, st) < 0) |
868 | return -errno; | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
874 | struct stat st; | |
875 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
876 | uid_t uid = 0; |
877 | gid_t gid = 0; | |
1b992147 LP |
878 | |
879 | assert(i); | |
880 | ||
881 | /* First, try to get the gid directly */ | |
882 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { | |
883 | gid = st.st_gid; | |
884 | found_gid = true; | |
885 | } | |
886 | ||
887 | /* Then, try to get the uid directly */ | |
888 | if ((_uid || (_gid && !found_gid)) | |
889 | && i->uid_path | |
890 | && root_stat(i->uid_path, &st) >= 0) { | |
891 | ||
892 | uid = st.st_uid; | |
893 | found_uid = true; | |
894 | ||
895 | /* If we need the gid, but had no success yet, also derive it from the uid path */ | |
896 | if (_gid && !found_gid) { | |
897 | gid = st.st_gid; | |
898 | found_gid = true; | |
899 | } | |
900 | } | |
901 | ||
902 | /* If that didn't work yet, then let's reuse the gid as uid */ | |
903 | if (_uid && !found_uid && i->gid_path) { | |
904 | ||
905 | if (found_gid) { | |
906 | uid = (uid_t) gid; | |
907 | found_uid = true; | |
908 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
909 | uid = (uid_t) st.st_gid; | |
910 | found_uid = true; | |
911 | } | |
912 | } | |
913 | ||
914 | if (_uid) { | |
915 | if (!found_uid) | |
916 | return 0; | |
917 | ||
918 | *_uid = uid; | |
919 | } | |
920 | ||
921 | if (_gid) { | |
922 | if (!found_gid) | |
923 | return 0; | |
924 | ||
925 | *_gid = gid; | |
926 | } | |
927 | ||
928 | return 1; | |
929 | } | |
930 | ||
931 | static int add_user(Item *i) { | |
932 | void *z; | |
933 | int r; | |
934 | ||
935 | assert(i); | |
936 | ||
937 | /* Check the database directly */ | |
938 | z = hashmap_get(database_user, i->name); | |
939 | if (z) { | |
940 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 941 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
942 | i->uid_set = true; |
943 | return 0; | |
944 | } | |
945 | ||
946 | if (!arg_root) { | |
947 | struct passwd *p; | |
1b992147 LP |
948 | |
949 | /* Also check NSS */ | |
950 | errno = 0; | |
951 | p = getpwnam(i->name); | |
952 | if (p) { | |
953 | log_debug("User %s already exists.", i->name); | |
954 | i->uid = p->pw_uid; | |
955 | i->uid_set = true; | |
956 | ||
2fc09a9c DM |
957 | r = free_and_strdup(&i->description, p->pw_gecos); |
958 | if (r < 0) | |
959 | return log_oom(); | |
960 | ||
1b992147 LP |
961 | return 0; |
962 | } | |
4a62c710 MS |
963 | if (!IN_SET(errno, 0, ENOENT)) |
964 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); | |
1b992147 LP |
965 | } |
966 | ||
967 | /* Try to use the suggested numeric uid */ | |
968 | if (i->uid_set) { | |
b9ee05c2 | 969 | r = uid_is_ok(i->uid, i->name, !i->id_set_strict); |
f647962d MS |
970 | if (r < 0) |
971 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
972 | if (r == 0) { |
973 | log_debug("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); | |
974 | i->uid_set = false; | |
975 | } | |
976 | } | |
977 | ||
978 | /* If that didn't work, try to read it from the specified path */ | |
979 | if (!i->uid_set) { | |
980 | uid_t c; | |
981 | ||
982 | if (read_id_from_file(i, &c, NULL) > 0) { | |
983 | ||
8530dc44 | 984 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
985 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); |
986 | else { | |
b9ee05c2 | 987 | r = uid_is_ok(c, i->name, true); |
f647962d MS |
988 | if (r < 0) |
989 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
990 | else if (r > 0) { | |
1b992147 LP |
991 | i->uid = c; |
992 | i->uid_set = true; | |
993 | } else | |
994 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
995 | } | |
996 | } | |
997 | } | |
998 | ||
b938cb90 | 999 | /* Otherwise, try to reuse the group ID */ |
1b992147 | 1000 | if (!i->uid_set && i->gid_set) { |
b9ee05c2 | 1001 | r = uid_is_ok((uid_t) i->gid, i->name, true); |
f647962d MS |
1002 | if (r < 0) |
1003 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
1004 | if (r > 0) { |
1005 | i->uid = (uid_t) i->gid; | |
1006 | i->uid_set = true; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | /* And if that didn't work either, let's try to find a free one */ | |
1011 | if (!i->uid_set) { | |
8530dc44 LP |
1012 | for (;;) { |
1013 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1014 | if (r < 0) { | |
1015 | log_error("No free user ID available for %s.", i->name); | |
1016 | return r; | |
1017 | } | |
1b992147 | 1018 | |
b9ee05c2 | 1019 | r = uid_is_ok(search_uid, i->name, true); |
f647962d MS |
1020 | if (r < 0) |
1021 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1022 | else if (r > 0) | |
1b992147 LP |
1023 | break; |
1024 | } | |
1025 | ||
1b992147 LP |
1026 | i->uid_set = true; |
1027 | i->uid = search_uid; | |
1b992147 LP |
1028 | } |
1029 | ||
5bc9c980 | 1030 | r = ordered_hashmap_ensure_allocated(&todo_uids, NULL); |
1b992147 LP |
1031 | if (r < 0) |
1032 | return log_oom(); | |
1033 | ||
5bc9c980 | 1034 | r = ordered_hashmap_put(todo_uids, UID_TO_PTR(i->uid), i); |
1b992147 LP |
1035 | if (r < 0) |
1036 | return log_oom(); | |
1037 | ||
c1b6b04f | 1038 | i->todo_user = true; |
1b992147 LP |
1039 | log_info("Creating user %s (%s) with uid " UID_FMT " and gid " GID_FMT ".", i->name, strna(i->description), i->uid, i->gid); |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | static int gid_is_ok(gid_t gid) { | |
1045 | struct group *g; | |
1046 | struct passwd *p; | |
1047 | ||
5bc9c980 | 1048 | if (ordered_hashmap_get(todo_gids, GID_TO_PTR(gid))) |
1b992147 LP |
1049 | return 0; |
1050 | ||
1051 | /* Avoid reusing gids that are already used by a different user */ | |
5bc9c980 | 1052 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(gid))) |
1b992147 LP |
1053 | return 0; |
1054 | ||
1055 | if (hashmap_contains(database_gid, GID_TO_PTR(gid))) | |
1056 | return 0; | |
1057 | ||
1058 | if (hashmap_contains(database_uid, UID_TO_PTR(gid))) | |
1059 | return 0; | |
1060 | ||
1061 | if (!arg_root) { | |
1062 | errno = 0; | |
1063 | g = getgrgid(gid); | |
1064 | if (g) | |
1065 | return 0; | |
b0284aba | 1066 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1067 | return -errno; |
1068 | ||
1069 | errno = 0; | |
1070 | p = getpwuid((uid_t) gid); | |
1071 | if (p) | |
1072 | return 0; | |
b0284aba | 1073 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1074 | return -errno; |
1075 | } | |
1076 | ||
1077 | return 1; | |
1078 | } | |
1079 | ||
1080 | static int add_group(Item *i) { | |
1081 | void *z; | |
1082 | int r; | |
1083 | ||
1084 | assert(i); | |
1085 | ||
1086 | /* Check the database directly */ | |
1087 | z = hashmap_get(database_group, i->name); | |
1088 | if (z) { | |
1089 | log_debug("Group %s already exists.", i->name); | |
1090 | i->gid = PTR_TO_GID(z); | |
1091 | i->gid_set = true; | |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | /* Also check NSS */ | |
1096 | if (!arg_root) { | |
1097 | struct group *g; | |
1098 | ||
1099 | errno = 0; | |
1100 | g = getgrnam(i->name); | |
1101 | if (g) { | |
1102 | log_debug("Group %s already exists.", i->name); | |
1103 | i->gid = g->gr_gid; | |
1104 | i->gid_set = true; | |
1105 | return 0; | |
1106 | } | |
4a62c710 MS |
1107 | if (!IN_SET(errno, 0, ENOENT)) |
1108 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", i->name); | |
1b992147 LP |
1109 | } |
1110 | ||
1111 | /* Try to use the suggested numeric gid */ | |
1112 | if (i->gid_set) { | |
1113 | r = gid_is_ok(i->gid); | |
f647962d MS |
1114 | if (r < 0) |
1115 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
b9ee05c2 | 1116 | if (i->id_set_strict) { |
28e7fad7 MV |
1117 | /* If we require the gid to already exist we can return here: |
1118 | * r > 0: means the gid does not exist -> fail | |
1119 | * r == 0: means the gid exists -> nothing more to do. | |
1120 | */ | |
1121 | if (r > 0) { | |
1122 | log_error("Failed to create %s: please create GID %d", i->name, i->gid); | |
1123 | return -EINVAL; | |
1124 | } | |
1125 | if (r == 0) | |
1126 | return 0; | |
1127 | } | |
1b992147 LP |
1128 | if (r == 0) { |
1129 | log_debug("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); | |
1130 | i->gid_set = false; | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* Try to reuse the numeric uid, if there's one */ | |
1135 | if (!i->gid_set && i->uid_set) { | |
1136 | r = gid_is_ok((gid_t) i->uid); | |
f647962d MS |
1137 | if (r < 0) |
1138 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1b992147 LP |
1139 | if (r > 0) { |
1140 | i->gid = (gid_t) i->uid; | |
1141 | i->gid_set = true; | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | /* If that didn't work, try to read it from the specified path */ | |
1146 | if (!i->gid_set) { | |
1147 | gid_t c; | |
1148 | ||
1149 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1150 | ||
8530dc44 | 1151 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1152 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); |
1153 | else { | |
1154 | r = gid_is_ok(c); | |
f647962d MS |
1155 | if (r < 0) |
1156 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1157 | else if (r > 0) { | |
1b992147 LP |
1158 | i->gid = c; |
1159 | i->gid_set = true; | |
1160 | } else | |
1161 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1162 | } | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | /* And if that didn't work either, let's try to find a free one */ | |
1167 | if (!i->gid_set) { | |
8530dc44 LP |
1168 | for (;;) { |
1169 | /* We look for new GIDs in the UID pool! */ | |
1170 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1171 | if (r < 0) { | |
1172 | log_error("No free group ID available for %s.", i->name); | |
1173 | return r; | |
1174 | } | |
1175 | ||
1176 | r = gid_is_ok(search_uid); | |
f647962d MS |
1177 | if (r < 0) |
1178 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1179 | else if (r > 0) | |
1b992147 LP |
1180 | break; |
1181 | } | |
1182 | ||
1b992147 | 1183 | i->gid_set = true; |
8530dc44 | 1184 | i->gid = search_uid; |
1b992147 LP |
1185 | } |
1186 | ||
5bc9c980 | 1187 | r = ordered_hashmap_ensure_allocated(&todo_gids, NULL); |
1b992147 LP |
1188 | if (r < 0) |
1189 | return log_oom(); | |
1190 | ||
5bc9c980 | 1191 | r = ordered_hashmap_put(todo_gids, GID_TO_PTR(i->gid), i); |
1b992147 LP |
1192 | if (r < 0) |
1193 | return log_oom(); | |
1194 | ||
c1b6b04f | 1195 | i->todo_group = true; |
1b992147 LP |
1196 | log_info("Creating group %s with gid " GID_FMT ".", i->name, i->gid); |
1197 | ||
1198 | return 0; | |
1199 | } | |
1200 | ||
1201 | static int process_item(Item *i) { | |
1202 | int r; | |
1203 | ||
1204 | assert(i); | |
1205 | ||
1206 | switch (i->type) { | |
1207 | ||
1208 | case ADD_USER: | |
1209 | r = add_group(i); | |
1210 | if (r < 0) | |
1211 | return r; | |
1212 | ||
1213 | return add_user(i); | |
1214 | ||
e2c2060f | 1215 | case ADD_GROUP: |
1b992147 | 1216 | return add_group(i); |
1b992147 | 1217 | |
a12b0cc3 LP |
1218 | default: |
1219 | assert_not_reached("Unknown item type"); | |
1220 | } | |
1b992147 LP |
1221 | } |
1222 | ||
1223 | static void item_free(Item *i) { | |
1224 | ||
1225 | if (!i) | |
1226 | return; | |
1227 | ||
1228 | free(i->name); | |
1229 | free(i->uid_path); | |
1230 | free(i->gid_path); | |
1231 | free(i->description); | |
d9b8ea54 | 1232 | free(i->home); |
7b1aaf66 | 1233 | free(i->shell); |
1b992147 LP |
1234 | free(i); |
1235 | } | |
1236 | ||
1237 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
1238 | ||
a12b0cc3 LP |
1239 | static int add_implicit(void) { |
1240 | char *g, **l; | |
1241 | Iterator iterator; | |
1242 | int r; | |
1243 | ||
1244 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
1245 | ||
5bc9c980 | 1246 | ORDERED_HASHMAP_FOREACH_KEY(l, g, members, iterator) { |
a12b0cc3 LP |
1247 | Item *i; |
1248 | char **m; | |
1249 | ||
5bc9c980 | 1250 | i = ordered_hashmap_get(groups, g); |
a12b0cc3 LP |
1251 | if (!i) { |
1252 | _cleanup_(item_freep) Item *j = NULL; | |
1253 | ||
5bc9c980 | 1254 | r = ordered_hashmap_ensure_allocated(&groups, &string_hash_ops); |
a12b0cc3 LP |
1255 | if (r < 0) |
1256 | return log_oom(); | |
1257 | ||
1258 | j = new0(Item, 1); | |
1259 | if (!j) | |
1260 | return log_oom(); | |
1261 | ||
1262 | j->type = ADD_GROUP; | |
1263 | j->name = strdup(g); | |
1264 | if (!j->name) | |
1265 | return log_oom(); | |
1266 | ||
5bc9c980 | 1267 | r = ordered_hashmap_put(groups, j->name, j); |
a12b0cc3 LP |
1268 | if (r < 0) |
1269 | return log_oom(); | |
1270 | ||
1271 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
1272 | j = NULL; | |
1273 | } | |
1274 | ||
1275 | STRV_FOREACH(m, l) { | |
1276 | ||
5bc9c980 | 1277 | i = ordered_hashmap_get(users, *m); |
a12b0cc3 LP |
1278 | if (!i) { |
1279 | _cleanup_(item_freep) Item *j = NULL; | |
1280 | ||
5bc9c980 | 1281 | r = ordered_hashmap_ensure_allocated(&users, &string_hash_ops); |
a12b0cc3 LP |
1282 | if (r < 0) |
1283 | return log_oom(); | |
1284 | ||
1285 | j = new0(Item, 1); | |
1286 | if (!j) | |
1287 | return log_oom(); | |
1288 | ||
1289 | j->type = ADD_USER; | |
1290 | j->name = strdup(*m); | |
1291 | if (!j->name) | |
1292 | return log_oom(); | |
1293 | ||
5bc9c980 | 1294 | r = ordered_hashmap_put(users, j->name, j); |
a12b0cc3 LP |
1295 | if (r < 0) |
1296 | return log_oom(); | |
1297 | ||
1298 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
1299 | j = NULL; | |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | return 0; | |
1305 | } | |
1306 | ||
1b992147 LP |
1307 | static bool item_equal(Item *a, Item *b) { |
1308 | assert(a); | |
1309 | assert(b); | |
1310 | ||
1311 | if (a->type != b->type) | |
1312 | return false; | |
1313 | ||
1314 | if (!streq_ptr(a->name, b->name)) | |
1315 | return false; | |
1316 | ||
1317 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1318 | return false; | |
1319 | ||
1320 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1321 | return false; | |
1322 | ||
1323 | if (!streq_ptr(a->description, b->description)) | |
1324 | return false; | |
1325 | ||
1326 | if (a->uid_set != b->uid_set) | |
1327 | return false; | |
1328 | ||
1329 | if (a->uid_set && a->uid != b->uid) | |
1330 | return false; | |
1331 | ||
1332 | if (a->gid_set != b->gid_set) | |
1333 | return false; | |
1334 | ||
1335 | if (a->gid_set && a->gid != b->gid) | |
1336 | return false; | |
1337 | ||
7629889c LP |
1338 | if (!streq_ptr(a->home, b->home)) |
1339 | return false; | |
1340 | ||
7b1aaf66 ZJS |
1341 | if (!streq_ptr(a->shell, b->shell)) |
1342 | return false; | |
1343 | ||
1b992147 LP |
1344 | return true; |
1345 | } | |
1346 | ||
1b992147 LP |
1347 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
1348 | ||
1349 | static const Specifier specifier_table[] = { | |
1350 | { 'm', specifier_machine_id, NULL }, | |
1351 | { 'b', specifier_boot_id, NULL }, | |
1352 | { 'H', specifier_host_name, NULL }, | |
1353 | { 'v', specifier_kernel_release, NULL }, | |
1354 | {} | |
1355 | }; | |
1356 | ||
7b1aaf66 ZJS |
1357 | _cleanup_free_ char *action = NULL, |
1358 | *name = NULL, *resolved_name = NULL, | |
1359 | *id = NULL, *resolved_id = NULL, | |
1360 | *description = NULL, | |
1361 | *home = NULL, | |
1362 | *shell, *resolved_shell = NULL; | |
1b992147 LP |
1363 | _cleanup_(item_freep) Item *i = NULL; |
1364 | Item *existing; | |
5bc9c980 | 1365 | OrderedHashmap *h; |
7629889c LP |
1366 | int r; |
1367 | const char *p; | |
1b992147 LP |
1368 | |
1369 | assert(fname); | |
1370 | assert(line >= 1); | |
1371 | assert(buffer); | |
1372 | ||
7629889c LP |
1373 | /* Parse columns */ |
1374 | p = buffer; | |
7b1aaf66 ZJS |
1375 | r = extract_many_words(&p, NULL, EXTRACT_QUOTES, |
1376 | &action, &name, &id, &description, &home, &shell, NULL); | |
7629889c | 1377 | if (r < 0) { |
1b992147 | 1378 | log_error("[%s:%u] Syntax error.", fname, line); |
7629889c LP |
1379 | return r; |
1380 | } | |
1381 | if (r < 2) { | |
1382 | log_error("[%s:%u] Missing action and name columns.", fname, line); | |
1383 | return -EINVAL; | |
1384 | } | |
4b1c1753 | 1385 | if (!isempty(p)) { |
7629889c LP |
1386 | log_error("[%s:%u] Trailing garbage.", fname, line); |
1387 | return -EINVAL; | |
1b992147 LP |
1388 | } |
1389 | ||
7629889c | 1390 | /* Verify action */ |
1b992147 LP |
1391 | if (strlen(action) != 1) { |
1392 | log_error("[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1393 | return -EINVAL; | |
1394 | } | |
1395 | ||
8530dc44 | 1396 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) { |
61233823 | 1397 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, action[0]); |
1b992147 LP |
1398 | return -EBADMSG; |
1399 | } | |
1400 | ||
7629889c | 1401 | /* Verify name */ |
97b11eed DH |
1402 | if (isempty(name) || streq(name, "-")) |
1403 | name = mfree(name); | |
1b992147 | 1404 | |
8530dc44 LP |
1405 | if (name) { |
1406 | r = specifier_printf(name, specifier_table, NULL, &resolved_name); | |
1407 | if (r < 0) { | |
1408 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1409 | return r; | |
1410 | } | |
1411 | ||
1412 | if (!valid_user_group_name(resolved_name)) { | |
1413 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_name); | |
1414 | return -EINVAL; | |
1415 | } | |
1b992147 LP |
1416 | } |
1417 | ||
8530dc44 | 1418 | /* Verify id */ |
97b11eed DH |
1419 | if (isempty(id) || streq(id, "-")) |
1420 | id = mfree(id); | |
7629889c | 1421 | |
8530dc44 LP |
1422 | if (id) { |
1423 | r = specifier_printf(id, specifier_table, NULL, &resolved_id); | |
1424 | if (r < 0) { | |
1425 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1426 | return r; | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | /* Verify description */ | |
97b11eed DH |
1431 | if (isempty(description) || streq(description, "-")) |
1432 | description = mfree(description); | |
1b992147 | 1433 | |
8530dc44 LP |
1434 | if (description) { |
1435 | if (!valid_gecos(description)) { | |
1436 | log_error("[%s:%u] '%s' is not a valid GECOS field.", fname, line, description); | |
1437 | return -EINVAL; | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | /* Verify home */ | |
97b11eed DH |
1442 | if (isempty(home) || streq(home, "-")) |
1443 | home = mfree(home); | |
1b992147 | 1444 | |
8530dc44 LP |
1445 | if (home) { |
1446 | if (!valid_home(home)) { | |
1447 | log_error("[%s:%u] '%s' is not a valid home directory field.", fname, line, home); | |
1448 | return -EINVAL; | |
1449 | } | |
1450 | } | |
1451 | ||
7b1aaf66 ZJS |
1452 | /* Verify shell */ |
1453 | if (isempty(shell) || streq(shell, "-")) | |
1454 | shell = mfree(shell); | |
1455 | ||
1456 | if (shell) { | |
1457 | r = specifier_printf(shell, specifier_table, NULL, &resolved_shell); | |
1458 | if (r < 0) { | |
1459 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, shell); | |
1460 | return r; | |
1461 | } | |
1462 | ||
1463 | if (!valid_shell(resolved_shell)) { | |
1464 | log_error("[%s:%u] '%s' is not a valid login shell field.", fname, line, resolved_shell); | |
1465 | return -EINVAL; | |
1466 | } | |
1467 | } | |
1468 | ||
1469 | ||
a12b0cc3 | 1470 | switch (action[0]) { |
1b992147 | 1471 | |
8530dc44 LP |
1472 | case ADD_RANGE: |
1473 | if (resolved_name) { | |
1474 | log_error("[%s:%u] Lines of type 'r' don't take a name field.", fname, line); | |
1475 | return -EINVAL; | |
1476 | } | |
1b992147 | 1477 | |
8530dc44 LP |
1478 | if (!resolved_id) { |
1479 | log_error("[%s:%u] Lines of type 'r' require a ID range in the third field.", fname, line); | |
1480 | return -EINVAL; | |
1481 | } | |
1b992147 | 1482 | |
7b1aaf66 ZJS |
1483 | if (description || home || shell) { |
1484 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1485 | fname, line, action[0], | |
1486 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c LP |
1487 | return -EINVAL; |
1488 | } | |
1489 | ||
8530dc44 LP |
1490 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); |
1491 | if (r < 0) { | |
1492 | log_error("[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
a12b0cc3 LP |
1493 | return -EINVAL; |
1494 | } | |
1b992147 | 1495 | |
8530dc44 LP |
1496 | return 0; |
1497 | ||
1498 | case ADD_MEMBER: { | |
1499 | char **l; | |
1500 | ||
1501 | /* Try to extend an existing member or group item */ | |
1502 | if (!name) { | |
1503 | log_error("[%s:%u] Lines of type 'm' require a user name in the second field.", fname, line); | |
1504 | return -EINVAL; | |
1505 | } | |
1506 | ||
1507 | if (!resolved_id) { | |
1508 | log_error("[%s:%u] Lines of type 'm' require a group name in the third field.", fname, line); | |
1509 | return -EINVAL; | |
a12b0cc3 | 1510 | } |
1b992147 | 1511 | |
a12b0cc3 LP |
1512 | if (!valid_user_group_name(resolved_id)) { |
1513 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_id); | |
1514 | return -EINVAL; | |
1515 | } | |
1b992147 | 1516 | |
7b1aaf66 ZJS |
1517 | if (description || home || shell) { |
1518 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1519 | fname, line, action[0], | |
1520 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
8530dc44 LP |
1521 | return -EINVAL; |
1522 | } | |
1523 | ||
5bc9c980 | 1524 | r = ordered_hashmap_ensure_allocated(&members, &string_hash_ops); |
7629889c LP |
1525 | if (r < 0) |
1526 | return log_oom(); | |
a12b0cc3 | 1527 | |
5bc9c980 | 1528 | l = ordered_hashmap_get(members, resolved_id); |
a12b0cc3 LP |
1529 | if (l) { |
1530 | /* A list for this group name already exists, let's append to it */ | |
1531 | r = strv_push(&l, resolved_name); | |
1532 | if (r < 0) | |
1533 | return log_oom(); | |
1534 | ||
1535 | resolved_name = NULL; | |
1536 | ||
5bc9c980 | 1537 | assert_se(ordered_hashmap_update(members, resolved_id, l) >= 0); |
1b992147 | 1538 | } else { |
a12b0cc3 LP |
1539 | /* No list for this group name exists yet, create one */ |
1540 | ||
1541 | l = new0(char *, 2); | |
1542 | if (!l) | |
1543 | return -ENOMEM; | |
1544 | ||
1545 | l[0] = resolved_name; | |
1546 | l[1] = NULL; | |
1b992147 | 1547 | |
5bc9c980 | 1548 | r = ordered_hashmap_put(members, resolved_id, l); |
1b992147 | 1549 | if (r < 0) { |
a12b0cc3 LP |
1550 | free(l); |
1551 | return log_oom(); | |
1b992147 LP |
1552 | } |
1553 | ||
a12b0cc3 | 1554 | resolved_id = resolved_name = NULL; |
1b992147 | 1555 | } |
a12b0cc3 LP |
1556 | |
1557 | return 0; | |
1b992147 LP |
1558 | } |
1559 | ||
a12b0cc3 | 1560 | case ADD_USER: |
8530dc44 LP |
1561 | if (!name) { |
1562 | log_error("[%s:%u] Lines of type 'u' require a user name in the second field.", fname, line); | |
1563 | return -EINVAL; | |
1564 | } | |
1565 | ||
5bc9c980 | 1566 | r = ordered_hashmap_ensure_allocated(&users, &string_hash_ops); |
a12b0cc3 LP |
1567 | if (r < 0) |
1568 | return log_oom(); | |
1569 | ||
1570 | i = new0(Item, 1); | |
1571 | if (!i) | |
1572 | return log_oom(); | |
1573 | ||
8530dc44 LP |
1574 | if (resolved_id) { |
1575 | if (path_is_absolute(resolved_id)) { | |
1576 | i->uid_path = resolved_id; | |
1577 | resolved_id = NULL; | |
a12b0cc3 LP |
1578 | |
1579 | path_kill_slashes(i->uid_path); | |
a12b0cc3 | 1580 | } else { |
4cb41413 MV |
1581 | _cleanup_free_ char *uid = NULL, *gid = NULL; |
1582 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1583 | r = parse_gid(gid, &i->gid); | |
1584 | if (r < 0) | |
1585 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1586 | i->gid_set = true; | |
b9ee05c2 | 1587 | i->id_set_strict = true; |
4cb41413 | 1588 | free_and_replace(resolved_id, uid); |
a12b0cc3 | 1589 | } |
4cb41413 MV |
1590 | r = parse_uid(resolved_id, &i->uid); |
1591 | if (r < 0) | |
1592 | return log_error_errno(r, "Failed to parse UID: '%s': %m", id); | |
a12b0cc3 LP |
1593 | |
1594 | i->uid_set = true; | |
1595 | } | |
1596 | } | |
1597 | ||
8530dc44 LP |
1598 | i->description = description; |
1599 | description = NULL; | |
7629889c | 1600 | |
8530dc44 LP |
1601 | i->home = home; |
1602 | home = NULL; | |
a12b0cc3 | 1603 | |
7b1aaf66 ZJS |
1604 | i->shell = resolved_shell; |
1605 | resolved_shell = NULL; | |
1606 | ||
1b992147 | 1607 | h = users; |
a12b0cc3 LP |
1608 | break; |
1609 | ||
1610 | case ADD_GROUP: | |
8530dc44 LP |
1611 | if (!name) { |
1612 | log_error("[%s:%u] Lines of type 'g' require a user name in the second field.", fname, line); | |
1613 | return -EINVAL; | |
1614 | } | |
a12b0cc3 | 1615 | |
7b1aaf66 ZJS |
1616 | if (description || home || shell) { |
1617 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1618 | fname, line, action[0], | |
1619 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c LP |
1620 | return -EINVAL; |
1621 | } | |
1622 | ||
5bc9c980 | 1623 | r = ordered_hashmap_ensure_allocated(&groups, &string_hash_ops); |
7629889c LP |
1624 | if (r < 0) |
1625 | return log_oom(); | |
1626 | ||
a12b0cc3 LP |
1627 | i = new0(Item, 1); |
1628 | if (!i) | |
1629 | return log_oom(); | |
1630 | ||
8530dc44 LP |
1631 | if (resolved_id) { |
1632 | if (path_is_absolute(resolved_id)) { | |
1633 | i->gid_path = resolved_id; | |
1634 | resolved_id = NULL; | |
a12b0cc3 LP |
1635 | |
1636 | path_kill_slashes(i->gid_path); | |
1637 | } else { | |
8530dc44 | 1638 | r = parse_gid(resolved_id, &i->gid); |
4cb41413 MV |
1639 | if (r < 0) |
1640 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
a12b0cc3 LP |
1641 | |
1642 | i->gid_set = true; | |
1643 | } | |
1644 | } | |
1645 | ||
1b992147 | 1646 | h = groups; |
a12b0cc3 | 1647 | break; |
8530dc44 | 1648 | |
bce415ed RC |
1649 | default: |
1650 | return -EBADMSG; | |
1b992147 | 1651 | } |
a12b0cc3 LP |
1652 | |
1653 | i->type = action[0]; | |
1654 | i->name = resolved_name; | |
1655 | resolved_name = NULL; | |
1b992147 | 1656 | |
5bc9c980 | 1657 | existing = ordered_hashmap_get(h, i->name); |
1b992147 LP |
1658 | if (existing) { |
1659 | ||
1660 | /* Two identical items are fine */ | |
1661 | if (!item_equal(existing, i)) | |
1662 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->name); | |
1663 | ||
1664 | return 0; | |
1665 | } | |
1666 | ||
5bc9c980 | 1667 | r = ordered_hashmap_put(h, i->name, i); |
a12b0cc3 LP |
1668 | if (r < 0) |
1669 | return log_oom(); | |
1b992147 LP |
1670 | |
1671 | i = NULL; | |
1672 | return 0; | |
1673 | } | |
1674 | ||
1675 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
dfc87cbf LP |
1676 | _cleanup_fclose_ FILE *rf = NULL; |
1677 | FILE *f = NULL; | |
1b992147 LP |
1678 | char line[LINE_MAX]; |
1679 | unsigned v = 0; | |
c4640902 | 1680 | int r = 0; |
1b992147 LP |
1681 | |
1682 | assert(fn); | |
1683 | ||
dfc87cbf LP |
1684 | if (streq(fn, "-")) |
1685 | f = stdin; | |
1686 | else { | |
1687 | r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &rf); | |
1688 | if (r < 0) { | |
1689 | if (ignore_enoent && r == -ENOENT) | |
1690 | return 0; | |
1b992147 | 1691 | |
8d3d7072 | 1692 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); |
dfc87cbf LP |
1693 | } |
1694 | ||
1695 | f = rf; | |
1b992147 LP |
1696 | } |
1697 | ||
1698 | FOREACH_LINE(line, f, break) { | |
1699 | char *l; | |
1700 | int k; | |
1701 | ||
1702 | v++; | |
1703 | ||
1704 | l = strstrip(line); | |
4c701096 | 1705 | if (IN_SET(*l, 0, '#')) |
1b992147 LP |
1706 | continue; |
1707 | ||
1708 | k = parse_line(fn, v, l); | |
1709 | if (k < 0 && r == 0) | |
1710 | r = k; | |
1711 | } | |
1712 | ||
1713 | if (ferror(f)) { | |
56f64d95 | 1714 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
1b992147 LP |
1715 | if (r == 0) |
1716 | r = -EIO; | |
1717 | } | |
1718 | ||
1719 | return r; | |
1720 | } | |
1721 | ||
1b992147 LP |
1722 | static void free_database(Hashmap *by_name, Hashmap *by_id) { |
1723 | char *name; | |
1724 | ||
1725 | for (;;) { | |
1726 | name = hashmap_first(by_id); | |
1727 | if (!name) | |
1728 | break; | |
1729 | ||
1730 | hashmap_remove(by_name, name); | |
1731 | ||
1732 | hashmap_steal_first_key(by_id); | |
1733 | free(name); | |
1734 | } | |
1735 | ||
1736 | while ((name = hashmap_steal_first_key(by_name))) | |
1737 | free(name); | |
1738 | ||
1739 | hashmap_free(by_name); | |
1740 | hashmap_free(by_id); | |
1741 | } | |
1742 | ||
601185b4 | 1743 | static void help(void) { |
1b992147 LP |
1744 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1745 | "Creates system user accounts.\n\n" | |
1746 | " -h --help Show this help\n" | |
1747 | " --version Show package version\n" | |
601185b4 | 1748 | " --root=PATH Operate on an alternate filesystem root\n" |
1b600bd5 | 1749 | " --inline Treat arguments as configuration lines\n" |
601185b4 | 1750 | , program_invocation_short_name); |
1b992147 LP |
1751 | } |
1752 | ||
1753 | static int parse_argv(int argc, char *argv[]) { | |
1754 | ||
1755 | enum { | |
1756 | ARG_VERSION = 0x100, | |
1757 | ARG_ROOT, | |
1b600bd5 | 1758 | ARG_INLINE, |
1b992147 LP |
1759 | }; |
1760 | ||
1761 | static const struct option options[] = { | |
1762 | { "help", no_argument, NULL, 'h' }, | |
1763 | { "version", no_argument, NULL, ARG_VERSION }, | |
1764 | { "root", required_argument, NULL, ARG_ROOT }, | |
1b600bd5 | 1765 | { "inline", no_argument, NULL, ARG_INLINE }, |
1b992147 LP |
1766 | {} |
1767 | }; | |
1768 | ||
0f474365 | 1769 | int c, r; |
1b992147 LP |
1770 | |
1771 | assert(argc >= 0); | |
1772 | assert(argv); | |
1773 | ||
601185b4 | 1774 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
1775 | |
1776 | switch (c) { | |
1777 | ||
1778 | case 'h': | |
601185b4 ZJS |
1779 | help(); |
1780 | return 0; | |
1b992147 LP |
1781 | |
1782 | case ARG_VERSION: | |
3f6fd1ba | 1783 | return version(); |
1b992147 LP |
1784 | |
1785 | case ARG_ROOT: | |
0f03c2a4 | 1786 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
0f474365 | 1787 | if (r < 0) |
0f03c2a4 | 1788 | return r; |
1b992147 LP |
1789 | break; |
1790 | ||
1b600bd5 ZJS |
1791 | case ARG_INLINE: |
1792 | arg_inline = true; | |
1793 | break; | |
1794 | ||
1b992147 LP |
1795 | case '?': |
1796 | return -EINVAL; | |
1797 | ||
1798 | default: | |
1799 | assert_not_reached("Unhandled option"); | |
1800 | } | |
1b992147 LP |
1801 | |
1802 | return 1; | |
1803 | } | |
1804 | ||
1805 | int main(int argc, char *argv[]) { | |
1806 | ||
1807 | _cleanup_close_ int lock = -1; | |
1808 | Iterator iterator; | |
1809 | int r, k; | |
1810 | Item *i; | |
a12b0cc3 | 1811 | char *n; |
1b992147 LP |
1812 | |
1813 | r = parse_argv(argc, argv); | |
1814 | if (r <= 0) | |
1815 | goto finish; | |
1816 | ||
1817 | log_set_target(LOG_TARGET_AUTO); | |
1818 | log_parse_environment(); | |
1819 | log_open(); | |
1820 | ||
1821 | umask(0022); | |
1822 | ||
c3dacc8b | 1823 | r = mac_selinux_init(); |
9f1c1940 | 1824 | if (r < 0) { |
da927ba9 | 1825 | log_error_errno(r, "SELinux setup failed: %m"); |
9f1c1940 ZJS |
1826 | goto finish; |
1827 | } | |
1b992147 LP |
1828 | |
1829 | if (optind < argc) { | |
1830 | int j; | |
1831 | ||
1832 | for (j = optind; j < argc; j++) { | |
1b600bd5 ZJS |
1833 | if (arg_inline) |
1834 | /* Use (argument):n, where n==1 for the first positional arg */ | |
1835 | r = parse_line("(argument)", j - optind + 1, argv[j]); | |
1836 | else | |
1837 | r = read_config_file(argv[j], false); | |
1838 | if (r < 0) | |
1839 | goto finish; | |
1b992147 LP |
1840 | } |
1841 | } else { | |
1842 | _cleanup_strv_free_ char **files = NULL; | |
1843 | char **f; | |
1844 | ||
b5084605 | 1845 | r = conf_files_list_nulstr(&files, ".conf", arg_root, 0, conf_file_dirs); |
1b992147 | 1846 | if (r < 0) { |
da927ba9 | 1847 | log_error_errno(r, "Failed to enumerate sysusers.d files: %m"); |
1b992147 LP |
1848 | goto finish; |
1849 | } | |
1850 | ||
1851 | STRV_FOREACH(f, files) { | |
1852 | k = read_config_file(*f, true); | |
1853 | if (k < 0 && r == 0) | |
1854 | r = k; | |
1855 | } | |
1856 | } | |
1857 | ||
fe102d6a LP |
1858 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection |
1859 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
1860 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
1861 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
1862 | * /etc. */ | |
1863 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) { | |
1864 | r = log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
1865 | goto finish; | |
1866 | } | |
1867 | ||
8530dc44 | 1868 | if (!uid_range) { |
b9ee05c2 | 1869 | /* Default to default range of 1..SYSTEM_UID_MAX */ |
8530dc44 LP |
1870 | r = uid_range_add(&uid_range, &n_uid_range, 1, SYSTEM_UID_MAX); |
1871 | if (r < 0) { | |
1872 | log_oom(); | |
1873 | goto finish; | |
1874 | } | |
1875 | } | |
1876 | ||
a12b0cc3 LP |
1877 | r = add_implicit(); |
1878 | if (r < 0) | |
1879 | goto finish; | |
1880 | ||
e929bee0 | 1881 | lock = take_etc_passwd_lock(arg_root); |
1b992147 | 1882 | if (lock < 0) { |
d1e4b8fd | 1883 | log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); |
1b992147 LP |
1884 | goto finish; |
1885 | } | |
1886 | ||
1887 | r = load_user_database(); | |
1888 | if (r < 0) { | |
da927ba9 | 1889 | log_error_errno(r, "Failed to load user database: %m"); |
1b992147 LP |
1890 | goto finish; |
1891 | } | |
1892 | ||
1893 | r = load_group_database(); | |
1894 | if (r < 0) { | |
da927ba9 | 1895 | log_error_errno(r, "Failed to read group database: %m"); |
1b992147 LP |
1896 | goto finish; |
1897 | } | |
1898 | ||
5bc9c980 | 1899 | ORDERED_HASHMAP_FOREACH(i, groups, iterator) |
1b992147 LP |
1900 | process_item(i); |
1901 | ||
5bc9c980 | 1902 | ORDERED_HASHMAP_FOREACH(i, users, iterator) |
1b992147 LP |
1903 | process_item(i); |
1904 | ||
1905 | r = write_files(); | |
1906 | if (r < 0) | |
da927ba9 | 1907 | log_error_errno(r, "Failed to write files: %m"); |
1b992147 LP |
1908 | |
1909 | finish: | |
5bc9c980 MV |
1910 | ordered_hashmap_free_with_destructor(groups, item_free); |
1911 | ordered_hashmap_free_with_destructor(users, item_free); | |
1b992147 | 1912 | |
5bc9c980 MV |
1913 | while ((n = ordered_hashmap_first_key(members))) { |
1914 | strv_free(ordered_hashmap_steal_first(members)); | |
a12b0cc3 LP |
1915 | free(n); |
1916 | } | |
5bc9c980 | 1917 | ordered_hashmap_free(members); |
224b0e7a | 1918 | |
5bc9c980 MV |
1919 | ordered_hashmap_free(todo_uids); |
1920 | ordered_hashmap_free(todo_gids); | |
1b992147 LP |
1921 | |
1922 | free_database(database_user, database_uid); | |
1923 | free_database(database_group, database_gid); | |
1924 | ||
1925 | free(arg_root); | |
1926 | ||
1927 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1928 | } |