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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> |
932ad62b | 22 | #include <utmp.h> |
1b992147 | 23 | |
b5efdb8a | 24 | #include "alloc-util.h" |
1b992147 LP |
25 | #include "conf-files.h" |
26 | #include "copy.h" | |
a0f29c76 LP |
27 | #include "def.h" |
28 | #include "fd-util.h" | |
1dd98a71 | 29 | #include "fs-util.h" |
f7f628b5 | 30 | #include "fileio-label.h" |
f97b34a6 | 31 | #include "format-util.h" |
3f6fd1ba LP |
32 | #include "hashmap.h" |
33 | #include "path-util.h" | |
34 | #include "selinux-util.h" | |
07630cea | 35 | #include "smack-util.h" |
3f6fd1ba | 36 | #include "specifier.h" |
07630cea | 37 | #include "string-util.h" |
3f6fd1ba LP |
38 | #include "strv.h" |
39 | #include "uid-range.h" | |
a0f29c76 | 40 | #include "user-util.h" |
3f6fd1ba LP |
41 | #include "utf8.h" |
42 | #include "util.h" | |
1b992147 LP |
43 | |
44 | typedef enum ItemType { | |
45 | ADD_USER = 'u', | |
46 | ADD_GROUP = 'g', | |
a12b0cc3 | 47 | ADD_MEMBER = 'm', |
8530dc44 | 48 | ADD_RANGE = 'r', |
1b992147 LP |
49 | } ItemType; |
50 | typedef struct Item { | |
51 | ItemType type; | |
52 | ||
53 | char *name; | |
54 | char *uid_path; | |
55 | char *gid_path; | |
56 | char *description; | |
7629889c | 57 | char *home; |
7b1aaf66 | 58 | char *shell; |
1b992147 LP |
59 | |
60 | gid_t gid; | |
61 | uid_t uid; | |
62 | ||
63 | bool gid_set:1; | |
fb959f14 ZJS |
64 | |
65 | /* When set the group with the specified gid must exist | |
66 | * and the check if a uid clashes with the gid is skipped. | |
67 | */ | |
b9ee05c2 | 68 | bool id_set_strict:1; |
fb959f14 | 69 | |
1b992147 LP |
70 | bool uid_set:1; |
71 | ||
c1b6b04f KS |
72 | bool todo_user:1; |
73 | bool todo_group:1; | |
1b992147 LP |
74 | } Item; |
75 | ||
76 | static char *arg_root = NULL; | |
d16a1c1b | 77 | static const char *arg_replace = 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 | ||
100d5f6e | 112 | while ((r = fgetpwent_sane(f, &pw)) > 0) { |
1b992147 LP |
113 | char *n; |
114 | int k, q; | |
115 | ||
116 | n = strdup(pw->pw_name); | |
117 | if (!n) | |
118 | return -ENOMEM; | |
119 | ||
120 | k = hashmap_put(database_user, n, UID_TO_PTR(pw->pw_uid)); | |
121 | if (k < 0 && k != -EEXIST) { | |
122 | free(n); | |
123 | return k; | |
124 | } | |
125 | ||
126 | q = hashmap_put(database_uid, UID_TO_PTR(pw->pw_uid), n); | |
127 | if (q < 0 && q != -EEXIST) { | |
128 | if (k < 0) | |
129 | free(n); | |
130 | return q; | |
131 | } | |
132 | ||
133 | if (q < 0 && k < 0) | |
134 | free(n); | |
1b992147 | 135 | } |
100d5f6e | 136 | return r; |
1b992147 LP |
137 | } |
138 | ||
139 | static int load_group_database(void) { | |
140 | _cleanup_fclose_ FILE *f = NULL; | |
141 | const char *group_path; | |
142 | struct group *gr; | |
143 | int r; | |
144 | ||
1d13f648 | 145 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
146 | f = fopen(group_path, "re"); |
147 | if (!f) | |
148 | return errno == ENOENT ? 0 : -errno; | |
149 | ||
d5099efc | 150 | r = hashmap_ensure_allocated(&database_group, &string_hash_ops); |
1b992147 LP |
151 | if (r < 0) |
152 | return r; | |
153 | ||
d5099efc | 154 | r = hashmap_ensure_allocated(&database_gid, NULL); |
1b992147 LP |
155 | if (r < 0) |
156 | return r; | |
157 | ||
158 | errno = 0; | |
159 | while ((gr = fgetgrent(f))) { | |
160 | char *n; | |
161 | int k, q; | |
162 | ||
163 | n = strdup(gr->gr_name); | |
164 | if (!n) | |
165 | return -ENOMEM; | |
166 | ||
167 | k = hashmap_put(database_group, n, GID_TO_PTR(gr->gr_gid)); | |
168 | if (k < 0 && k != -EEXIST) { | |
169 | free(n); | |
170 | return k; | |
171 | } | |
172 | ||
173 | q = hashmap_put(database_gid, GID_TO_PTR(gr->gr_gid), n); | |
174 | if (q < 0 && q != -EEXIST) { | |
175 | if (k < 0) | |
176 | free(n); | |
177 | return q; | |
178 | } | |
179 | ||
180 | if (q < 0 && k < 0) | |
181 | free(n); | |
182 | ||
183 | errno = 0; | |
184 | } | |
185 | if (!IN_SET(errno, 0, ENOENT)) | |
186 | return -errno; | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
9f1c1940 ZJS |
191 | static int make_backup(const char *target, const char *x) { |
192 | _cleanup_close_ int src = -1; | |
193 | _cleanup_fclose_ FILE *dst = NULL; | |
0a12bb1e EV |
194 | _cleanup_free_ char *temp = NULL; |
195 | char *backup; | |
1b992147 LP |
196 | struct timespec ts[2]; |
197 | struct stat st; | |
198 | int r; | |
199 | ||
200 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); | |
201 | if (src < 0) { | |
202 | if (errno == ENOENT) /* No backup necessary... */ | |
203 | return 0; | |
204 | ||
205 | return -errno; | |
206 | } | |
207 | ||
208 | if (fstat(src, &st) < 0) | |
209 | return -errno; | |
210 | ||
9f1c1940 ZJS |
211 | r = fopen_temporary_label(target, x, &dst, &temp); |
212 | if (r < 0) | |
213 | return r; | |
1b992147 | 214 | |
1c876927 | 215 | r = copy_bytes(src, fileno(dst), (uint64_t) -1, COPY_REFLINK); |
1b992147 LP |
216 | if (r < 0) |
217 | goto fail; | |
218 | ||
9f1c1940 ZJS |
219 | /* Don't fail on chmod() or chown(). If it stays owned by us |
220 | * and/or unreadable by others, then it isn't too bad... */ | |
221 | ||
63c372cb | 222 | backup = strjoina(x, "-"); |
9f1c1940 | 223 | |
1b992147 | 224 | /* Copy over the access mask */ |
9f1c1940 | 225 | if (fchmod(fileno(dst), st.st_mode & 07777) < 0) |
56f64d95 | 226 | log_warning_errno(errno, "Failed to change mode on %s: %m", backup); |
1b992147 | 227 | |
9f1c1940 | 228 | if (fchown(fileno(dst), st.st_uid, st.st_gid)< 0) |
56f64d95 | 229 | log_warning_errno(errno, "Failed to change ownership of %s: %m", backup); |
1b992147 LP |
230 | |
231 | ts[0] = st.st_atim; | |
232 | ts[1] = st.st_mtim; | |
f06863bd | 233 | if (futimens(fileno(dst), ts) < 0) |
56f64d95 | 234 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 235 | |
0675e94a AJ |
236 | r = fflush_sync_and_check(dst); |
237 | if (r < 0) | |
238 | goto fail; | |
239 | ||
240 | if (rename(temp, backup) < 0) { | |
241 | r = -errno; | |
1b992147 | 242 | goto fail; |
0675e94a | 243 | } |
1b992147 LP |
244 | |
245 | return 0; | |
246 | ||
247 | fail: | |
248 | unlink(temp); | |
249 | return r; | |
250 | } | |
251 | ||
a12b0cc3 LP |
252 | static int putgrent_with_members(const struct group *gr, FILE *group) { |
253 | char **a; | |
254 | ||
255 | assert(gr); | |
256 | assert(group); | |
257 | ||
5bc9c980 | 258 | a = ordered_hashmap_get(members, gr->gr_name); |
a12b0cc3 LP |
259 | if (a) { |
260 | _cleanup_strv_free_ char **l = NULL; | |
261 | bool added = false; | |
262 | char **i; | |
263 | ||
264 | l = strv_copy(gr->gr_mem); | |
265 | if (!l) | |
266 | return -ENOMEM; | |
267 | ||
268 | STRV_FOREACH(i, a) { | |
269 | if (strv_find(l, *i)) | |
270 | continue; | |
271 | ||
272 | if (strv_extend(&l, *i) < 0) | |
273 | return -ENOMEM; | |
274 | ||
275 | added = true; | |
276 | } | |
277 | ||
278 | if (added) { | |
279 | struct group t; | |
100d5f6e | 280 | int r; |
a12b0cc3 LP |
281 | |
282 | strv_uniq(l); | |
283 | strv_sort(l); | |
284 | ||
285 | t = *gr; | |
286 | t.gr_mem = l; | |
287 | ||
100d5f6e FB |
288 | r = putgrent_sane(&t, group); |
289 | return r < 0 ? r : 1; | |
a12b0cc3 LP |
290 | } |
291 | } | |
292 | ||
100d5f6e | 293 | return putgrent_sane(gr, group); |
a12b0cc3 LP |
294 | } |
295 | ||
349cc4a5 | 296 | #if ENABLE_GSHADOW |
9ab315cc LP |
297 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { |
298 | char **a; | |
299 | ||
300 | assert(sg); | |
301 | assert(gshadow); | |
302 | ||
5bc9c980 | 303 | a = ordered_hashmap_get(members, sg->sg_namp); |
9ab315cc LP |
304 | if (a) { |
305 | _cleanup_strv_free_ char **l = NULL; | |
306 | bool added = false; | |
307 | char **i; | |
308 | ||
309 | l = strv_copy(sg->sg_mem); | |
310 | if (!l) | |
311 | return -ENOMEM; | |
312 | ||
313 | STRV_FOREACH(i, a) { | |
314 | if (strv_find(l, *i)) | |
315 | continue; | |
316 | ||
317 | if (strv_extend(&l, *i) < 0) | |
318 | return -ENOMEM; | |
319 | ||
320 | added = true; | |
321 | } | |
322 | ||
323 | if (added) { | |
324 | struct sgrp t; | |
100d5f6e | 325 | int r; |
9ab315cc LP |
326 | |
327 | strv_uniq(l); | |
328 | strv_sort(l); | |
329 | ||
330 | t = *sg; | |
331 | t.sg_mem = l; | |
332 | ||
100d5f6e FB |
333 | r = putsgent_sane(&t, gshadow); |
334 | return r < 0 ? r : 1; | |
9ab315cc LP |
335 | } |
336 | } | |
337 | ||
100d5f6e | 338 | return putsgent_sane(sg, gshadow); |
9ab315cc | 339 | } |
b14e1b43 | 340 | #endif |
9ab315cc | 341 | |
fff19499 LP |
342 | static int sync_rights(FILE *from, FILE *to) { |
343 | struct stat st; | |
344 | ||
345 | if (fstat(fileno(from), &st) < 0) | |
346 | return -errno; | |
347 | ||
348 | if (fchmod(fileno(to), st.st_mode & 07777) < 0) | |
349 | return -errno; | |
350 | ||
351 | if (fchown(fileno(to), st.st_uid, st.st_gid) < 0) | |
352 | return -errno; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
c02e7b1e SW |
357 | static int rename_and_apply_smack(const char *temp_path, const char *dest_path) { |
358 | int r = 0; | |
359 | if (rename(temp_path, dest_path) < 0) | |
360 | return -errno; | |
361 | ||
362 | #ifdef SMACK_RUN_LABEL | |
363 | r = mac_smack_apply(dest_path, SMACK_ATTR_ACCESS, SMACK_FLOOR_LABEL); | |
364 | if (r < 0) | |
365 | return r; | |
366 | #endif | |
367 | return r; | |
368 | } | |
369 | ||
7b1aaf66 ZJS |
370 | static const char* default_shell(uid_t uid) { |
371 | return uid == 0 ? "/bin/sh" : "/sbin/nologin"; | |
372 | } | |
373 | ||
b20b0b66 FB |
374 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { |
375 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
1dd98a71 | 376 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
563dc6f8 | 377 | struct passwd *pw = NULL; |
1b992147 LP |
378 | Iterator iterator; |
379 | Item *i; | |
380 | int r; | |
381 | ||
5bc9c980 | 382 | if (ordered_hashmap_size(todo_uids) == 0) |
b20b0b66 | 383 | return 0; |
1b992147 | 384 | |
b20b0b66 FB |
385 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
386 | if (r < 0) | |
387 | return r; | |
388 | ||
389 | original = fopen(passwd_path, "re"); | |
390 | if (original) { | |
b20b0b66 FB |
391 | |
392 | r = sync_rights(original, passwd); | |
1b992147 | 393 | if (r < 0) |
1dd98a71 | 394 | return r; |
1b992147 | 395 | |
100d5f6e | 396 | while ((r = fgetpwent_sane(original, &pw)) > 0) { |
1b992147 | 397 | |
5bc9c980 | 398 | i = ordered_hashmap_get(users, pw->pw_name); |
b20b0b66 FB |
399 | if (i && i->todo_user) { |
400 | log_error("%s: User \"%s\" already exists.", passwd_path, pw->pw_name); | |
1dd98a71 | 401 | return -EEXIST; |
b20b0b66 | 402 | } |
e3c72c21 | 403 | |
5bc9c980 | 404 | if (ordered_hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) { |
b20b0b66 | 405 | log_error("%s: Detected collision for UID " UID_FMT ".", passwd_path, pw->pw_uid); |
1dd98a71 | 406 | return -EEXIST; |
1b992147 | 407 | } |
b20b0b66 | 408 | |
563dc6f8 FB |
409 | /* Make sure we keep the NIS entries (if any) at the end. */ |
410 | if (IN_SET(pw->pw_name[0], '+', '-')) | |
411 | break; | |
412 | ||
100d5f6e FB |
413 | r = putpwent_sane(pw, passwd); |
414 | if (r < 0) | |
415 | return r; | |
b20b0b66 | 416 | } |
100d5f6e FB |
417 | if (r < 0) |
418 | return r; | |
1dd98a71 FB |
419 | |
420 | } else { | |
421 | if (errno != ENOENT) | |
422 | return -errno; | |
423 | if (fchmod(fileno(passwd), 0644) < 0) | |
424 | return -errno; | |
b20b0b66 FB |
425 | } |
426 | ||
5bc9c980 | 427 | ORDERED_HASHMAP_FOREACH(i, todo_uids, iterator) { |
b20b0b66 FB |
428 | struct passwd n = { |
429 | .pw_name = i->name, | |
430 | .pw_uid = i->uid, | |
431 | .pw_gid = i->gid, | |
432 | .pw_gecos = i->description, | |
1b992147 | 433 | |
b20b0b66 FB |
434 | /* "x" means the password is stored in the shadow file */ |
435 | .pw_passwd = (char*) "x", | |
a12b0cc3 | 436 | |
b20b0b66 FB |
437 | /* We default to the root directory as home */ |
438 | .pw_dir = i->home ? i->home : (char*) "/", | |
1b992147 | 439 | |
b20b0b66 FB |
440 | /* Initialize the shell to nologin, with one exception: |
441 | * for root we patch in something special */ | |
7b1aaf66 | 442 | .pw_shell = i->shell ?: (char*) default_shell(i->uid), |
b20b0b66 | 443 | }; |
9ab315cc | 444 | |
100d5f6e FB |
445 | r = putpwent_sane(&n, passwd); |
446 | if (r < 0) | |
447 | return r; | |
b20b0b66 FB |
448 | } |
449 | ||
563dc6f8 FB |
450 | /* Append the remaining NIS entries if any */ |
451 | while (pw) { | |
100d5f6e FB |
452 | r = putpwent_sane(pw, passwd); |
453 | if (r < 0) | |
454 | return r; | |
563dc6f8 | 455 | |
100d5f6e FB |
456 | r = fgetpwent_sane(original, &pw); |
457 | if (r < 0) | |
458 | return r; | |
459 | if (r == 0) | |
460 | break; | |
563dc6f8 | 461 | } |
563dc6f8 | 462 | |
b20b0b66 FB |
463 | r = fflush_and_check(passwd); |
464 | if (r < 0) | |
1dd98a71 | 465 | return r; |
b20b0b66 FB |
466 | |
467 | *tmpfile = passwd; | |
468 | *tmpfile_path = passwd_tmp; | |
469 | passwd = NULL; | |
470 | passwd_tmp = NULL; | |
471 | return 0; | |
b20b0b66 FB |
472 | } |
473 | ||
474 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
475 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
1dd98a71 | 476 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
19ec7de2 | 477 | struct spwd *sp = NULL; |
b20b0b66 FB |
478 | Iterator iterator; |
479 | long lstchg; | |
480 | Item *i; | |
481 | int r; | |
482 | ||
5bc9c980 | 483 | if (ordered_hashmap_size(todo_uids) == 0) |
b20b0b66 FB |
484 | return 0; |
485 | ||
486 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); | |
487 | if (r < 0) | |
488 | return r; | |
9ab315cc | 489 | |
b20b0b66 FB |
490 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); |
491 | ||
492 | original = fopen(shadow_path, "re"); | |
493 | if (original) { | |
b20b0b66 FB |
494 | |
495 | r = sync_rights(original, shadow); | |
9ab315cc | 496 | if (r < 0) |
1dd98a71 | 497 | return r; |
9ab315cc | 498 | |
100d5f6e | 499 | while ((r = fgetspent_sane(original, &sp)) > 0) { |
9ab315cc | 500 | |
5bc9c980 | 501 | i = ordered_hashmap_get(users, sp->sp_namp); |
b20b0b66 FB |
502 | if (i && i->todo_user) { |
503 | /* we will update the existing entry */ | |
504 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 505 | |
b20b0b66 FB |
506 | /* only the /etc/shadow stage is left, so we can |
507 | * safely remove the item from the todo set */ | |
508 | i->todo_user = false; | |
5bc9c980 | 509 | ordered_hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); |
9ab315cc | 510 | } |
b20b0b66 | 511 | |
19ec7de2 FB |
512 | /* Make sure we keep the NIS entries (if any) at the end. */ |
513 | if (IN_SET(sp->sp_namp[0], '+', '-')) | |
514 | break; | |
515 | ||
100d5f6e FB |
516 | r = putspent_sane(sp, shadow); |
517 | if (r < 0) | |
518 | return r; | |
b20b0b66 | 519 | } |
100d5f6e FB |
520 | if (r < 0) |
521 | return r; | |
1dd98a71 FB |
522 | |
523 | } else { | |
524 | if (errno != ENOENT) | |
525 | return -errno; | |
526 | if (fchmod(fileno(shadow), 0000) < 0) | |
527 | return -errno; | |
b20b0b66 | 528 | } |
9ab315cc | 529 | |
5bc9c980 | 530 | ORDERED_HASHMAP_FOREACH(i, todo_uids, iterator) { |
b20b0b66 FB |
531 | struct spwd n = { |
532 | .sp_namp = i->name, | |
533 | .sp_pwdp = (char*) "!!", | |
534 | .sp_lstchg = lstchg, | |
535 | .sp_min = -1, | |
536 | .sp_max = -1, | |
537 | .sp_warn = -1, | |
538 | .sp_inact = -1, | |
539 | .sp_expire = -1, | |
540 | .sp_flag = (unsigned long) -1, /* this appears to be what everybody does ... */ | |
541 | }; | |
9ab315cc | 542 | |
100d5f6e FB |
543 | r = putspent_sane(&n, shadow); |
544 | if (r < 0) | |
545 | return r; | |
1b992147 | 546 | } |
19ec7de2 FB |
547 | |
548 | /* Append the remaining NIS entries if any */ | |
549 | while (sp) { | |
100d5f6e FB |
550 | r = putspent_sane(sp, shadow); |
551 | if (r < 0) | |
552 | return r; | |
19ec7de2 | 553 | |
100d5f6e FB |
554 | r = fgetspent_sane(original, &sp); |
555 | if (r < 0) | |
556 | return r; | |
557 | if (r == 0) | |
558 | break; | |
19ec7de2 FB |
559 | } |
560 | if (!IN_SET(errno, 0, ENOENT)) | |
561 | return -errno; | |
1b992147 | 562 | |
0675e94a | 563 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 564 | if (r < 0) |
1dd98a71 | 565 | return r; |
b20b0b66 FB |
566 | |
567 | *tmpfile = shadow; | |
568 | *tmpfile_path = shadow_tmp; | |
569 | shadow = NULL; | |
570 | shadow_tmp = NULL; | |
571 | return 0; | |
b20b0b66 | 572 | } |
1b992147 | 573 | |
b20b0b66 FB |
574 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { |
575 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
1dd98a71 | 576 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 | 577 | bool group_changed = false; |
563dc6f8 | 578 | struct group *gr = NULL; |
b20b0b66 FB |
579 | Iterator iterator; |
580 | Item *i; | |
581 | int r; | |
1b992147 | 582 | |
5bc9c980 | 583 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) |
b20b0b66 | 584 | return 0; |
e3c72c21 | 585 | |
b20b0b66 FB |
586 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
587 | if (r < 0) | |
588 | return r; | |
589 | ||
590 | original = fopen(group_path, "re"); | |
591 | if (original) { | |
b20b0b66 FB |
592 | |
593 | r = sync_rights(original, group); | |
594 | if (r < 0) | |
1dd98a71 | 595 | return r; |
b20b0b66 | 596 | |
100d5f6e | 597 | while ((r = fgetgrent_sane(original, &gr)) > 0) { |
b20b0b66 FB |
598 | /* Safety checks against name and GID collisions. Normally, |
599 | * this should be unnecessary, but given that we look at the | |
600 | * entries anyway here, let's make an extra verification | |
601 | * step that we don't generate duplicate entries. */ | |
602 | ||
5bc9c980 | 603 | i = ordered_hashmap_get(groups, gr->gr_name); |
b20b0b66 FB |
604 | if (i && i->todo_group) { |
605 | log_error("%s: Group \"%s\" already exists.", group_path, gr->gr_name); | |
1dd98a71 | 606 | return -EEXIST; |
1b992147 | 607 | } |
b20b0b66 | 608 | |
5bc9c980 | 609 | if (ordered_hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) { |
b20b0b66 | 610 | log_error("%s: Detected collision for GID " GID_FMT ".", group_path, gr->gr_gid); |
1dd98a71 | 611 | return -EEXIST; |
1b992147 LP |
612 | } |
613 | ||
563dc6f8 FB |
614 | /* Make sure we keep the NIS entries (if any) at the end. */ |
615 | if (IN_SET(gr->gr_name[0], '+', '-')) | |
616 | break; | |
617 | ||
b20b0b66 FB |
618 | r = putgrent_with_members(gr, group); |
619 | if (r < 0) | |
1dd98a71 | 620 | return r; |
b20b0b66 FB |
621 | if (r > 0) |
622 | group_changed = true; | |
b20b0b66 | 623 | } |
100d5f6e FB |
624 | if (r < 0) |
625 | return r; | |
1dd98a71 FB |
626 | |
627 | } else { | |
628 | if (errno != ENOENT) | |
629 | return -errno; | |
630 | if (fchmod(fileno(group), 0644) < 0) | |
631 | return -errno; | |
b20b0b66 | 632 | } |
7629889c | 633 | |
5bc9c980 | 634 | ORDERED_HASHMAP_FOREACH(i, todo_gids, iterator) { |
b20b0b66 FB |
635 | struct group n = { |
636 | .gr_name = i->name, | |
637 | .gr_gid = i->gid, | |
638 | .gr_passwd = (char*) "x", | |
639 | }; | |
1b992147 | 640 | |
b20b0b66 FB |
641 | r = putgrent_with_members(&n, group); |
642 | if (r < 0) | |
1dd98a71 | 643 | return r; |
7629889c | 644 | |
b20b0b66 FB |
645 | group_changed = true; |
646 | } | |
1b992147 | 647 | |
563dc6f8 FB |
648 | /* Append the remaining NIS entries if any */ |
649 | while (gr) { | |
100d5f6e FB |
650 | r = putgrent_sane(gr, group); |
651 | if (r < 0) | |
652 | return r; | |
563dc6f8 | 653 | |
100d5f6e FB |
654 | r = fgetgrent_sane(original, &gr); |
655 | if (r < 0) | |
656 | return r; | |
657 | if (r == 0) | |
658 | break; | |
563dc6f8 | 659 | } |
563dc6f8 | 660 | |
0675e94a | 661 | r = fflush_sync_and_check(group); |
b20b0b66 | 662 | if (r < 0) |
1dd98a71 | 663 | return r; |
1b992147 | 664 | |
b20b0b66 FB |
665 | if (group_changed) { |
666 | *tmpfile = group; | |
667 | *tmpfile_path = group_tmp; | |
668 | group = NULL; | |
669 | group_tmp = NULL; | |
670 | } | |
671 | return 0; | |
b20b0b66 FB |
672 | } |
673 | ||
674 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
349cc4a5 | 675 | #if ENABLE_GSHADOW |
b20b0b66 | 676 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 677 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 FB |
678 | bool group_changed = false; |
679 | Iterator iterator; | |
680 | Item *i; | |
681 | int r; | |
682 | ||
5bc9c980 | 683 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) |
b20b0b66 FB |
684 | return 0; |
685 | ||
686 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); | |
687 | if (r < 0) | |
688 | return r; | |
9ab315cc | 689 | |
b20b0b66 FB |
690 | original = fopen(gshadow_path, "re"); |
691 | if (original) { | |
692 | struct sgrp *sg; | |
693 | ||
694 | r = sync_rights(original, gshadow); | |
1b992147 | 695 | if (r < 0) |
1dd98a71 | 696 | return r; |
9ab315cc | 697 | |
100d5f6e | 698 | while ((r = fgetsgent_sane(original, &sg)) > 0) { |
c5abf225 | 699 | |
5bc9c980 | 700 | i = ordered_hashmap_get(groups, sg->sg_namp); |
b20b0b66 FB |
701 | if (i && i->todo_group) { |
702 | log_error("%s: Group \"%s\" already exists.", gshadow_path, sg->sg_namp); | |
1dd98a71 | 703 | return -EEXIST; |
b20b0b66 | 704 | } |
9ab315cc | 705 | |
b20b0b66 | 706 | r = putsgent_with_members(sg, gshadow); |
fff19499 | 707 | if (r < 0) |
1dd98a71 | 708 | return r; |
b20b0b66 FB |
709 | if (r > 0) |
710 | group_changed = true; | |
b20b0b66 | 711 | } |
100d5f6e FB |
712 | if (r < 0) |
713 | return r; | |
1dd98a71 FB |
714 | |
715 | } else { | |
716 | if (errno != ENOENT) | |
717 | return -errno; | |
718 | if (fchmod(fileno(gshadow), 0000) < 0) | |
719 | return -errno; | |
b20b0b66 | 720 | } |
9ab315cc | 721 | |
5bc9c980 | 722 | ORDERED_HASHMAP_FOREACH(i, todo_gids, iterator) { |
b20b0b66 FB |
723 | struct sgrp n = { |
724 | .sg_namp = i->name, | |
725 | .sg_passwd = (char*) "!!", | |
726 | }; | |
9ab315cc | 727 | |
b20b0b66 | 728 | r = putsgent_with_members(&n, gshadow); |
9ab315cc | 729 | if (r < 0) |
1dd98a71 | 730 | return r; |
b20b0b66 FB |
731 | |
732 | group_changed = true; | |
9ab315cc LP |
733 | } |
734 | ||
0675e94a | 735 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 736 | if (r < 0) |
1dd98a71 | 737 | return r; |
b20b0b66 | 738 | |
9ab315cc | 739 | if (group_changed) { |
b20b0b66 FB |
740 | *tmpfile = gshadow; |
741 | *tmpfile_path = gshadow_tmp; | |
742 | gshadow = NULL; | |
743 | gshadow_tmp = NULL; | |
744 | } | |
745 | return 0; | |
b14e1b43 FB |
746 | #else |
747 | return 0; | |
748 | #endif | |
b20b0b66 FB |
749 | } |
750 | ||
751 | static int write_files(void) { | |
b20b0b66 | 752 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 753 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
b20b0b66 FB |
754 | const char *passwd_path = NULL, *group_path = NULL, *shadow_path = NULL, *gshadow_path = NULL; |
755 | int r; | |
756 | ||
757 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
758 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
759 | group_path = prefix_roota(arg_root, "/etc/group"); | |
760 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
761 | ||
762 | r = write_temporary_group(group_path, &group, &group_tmp); | |
763 | if (r < 0) | |
1dd98a71 | 764 | return r; |
b20b0b66 FB |
765 | |
766 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
767 | if (r < 0) | |
1dd98a71 | 768 | return r; |
b20b0b66 FB |
769 | |
770 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
771 | if (r < 0) | |
1dd98a71 | 772 | return r; |
b20b0b66 FB |
773 | |
774 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
775 | if (r < 0) | |
1dd98a71 | 776 | return r; |
b20b0b66 FB |
777 | |
778 | /* Make a backup of the old files */ | |
779 | if (group) { | |
780 | r = make_backup("/etc/group", group_path); | |
781 | if (r < 0) | |
1dd98a71 | 782 | return r; |
b20b0b66 FB |
783 | } |
784 | if (gshadow) { | |
785 | r = make_backup("/etc/gshadow", gshadow_path); | |
786 | if (r < 0) | |
1dd98a71 | 787 | return r; |
1b992147 LP |
788 | } |
789 | ||
790 | if (passwd) { | |
9f1c1940 | 791 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 792 | if (r < 0) |
1dd98a71 | 793 | return r; |
1b992147 | 794 | } |
9ab315cc LP |
795 | if (shadow) { |
796 | r = make_backup("/etc/shadow", shadow_path); | |
797 | if (r < 0) | |
1dd98a71 | 798 | return r; |
9ab315cc | 799 | } |
1b992147 LP |
800 | |
801 | /* And make the new files count */ | |
b20b0b66 FB |
802 | if (group) { |
803 | r = rename_and_apply_smack(group_tmp, group_path); | |
804 | if (r < 0) | |
1dd98a71 | 805 | return r; |
9ab315cc | 806 | |
b20b0b66 FB |
807 | group_tmp = mfree(group_tmp); |
808 | } | |
809 | if (gshadow) { | |
810 | r = rename_and_apply_smack(gshadow_tmp, gshadow_path); | |
811 | if (r < 0) | |
1dd98a71 | 812 | return r; |
1b992147 | 813 | |
b20b0b66 | 814 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
815 | } |
816 | ||
817 | if (passwd) { | |
c02e7b1e SW |
818 | r = rename_and_apply_smack(passwd_tmp, passwd_path); |
819 | if (r < 0) | |
1dd98a71 | 820 | return r; |
1b992147 | 821 | |
97b11eed | 822 | passwd_tmp = mfree(passwd_tmp); |
1b992147 | 823 | } |
9ab315cc | 824 | if (shadow) { |
c02e7b1e SW |
825 | r = rename_and_apply_smack(shadow_tmp, shadow_path); |
826 | if (r < 0) | |
1dd98a71 | 827 | return r; |
9ab315cc | 828 | |
97b11eed | 829 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 830 | } |
1b992147 | 831 | |
1dd98a71 | 832 | return 0; |
1b992147 LP |
833 | } |
834 | ||
b9ee05c2 | 835 | static int uid_is_ok(uid_t uid, const char *name, bool check_with_gid) { |
1b992147 LP |
836 | struct passwd *p; |
837 | struct group *g; | |
838 | const char *n; | |
839 | Item *i; | |
840 | ||
841 | /* Let's see if we already have assigned the UID a second time */ | |
5bc9c980 | 842 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(uid))) |
1b992147 LP |
843 | return 0; |
844 | ||
845 | /* Try to avoid using uids that are already used by a group | |
846 | * that doesn't have the same name as our new user. */ | |
b9ee05c2 MV |
847 | if (check_with_gid) { |
848 | i = ordered_hashmap_get(todo_gids, GID_TO_PTR(uid)); | |
849 | if (i && !streq(i->name, name)) | |
850 | return 0; | |
851 | } | |
1b992147 LP |
852 | |
853 | /* Let's check the files directly */ | |
854 | if (hashmap_contains(database_uid, UID_TO_PTR(uid))) | |
855 | return 0; | |
856 | ||
b9ee05c2 MV |
857 | if (check_with_gid) { |
858 | n = hashmap_get(database_gid, GID_TO_PTR(uid)); | |
859 | if (n && !streq(n, name)) | |
860 | return 0; | |
861 | } | |
1b992147 LP |
862 | |
863 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
864 | if (!arg_root) { | |
865 | errno = 0; | |
866 | p = getpwuid(uid); | |
867 | if (p) | |
868 | return 0; | |
b0284aba | 869 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
870 | return -errno; |
871 | ||
b9ee05c2 MV |
872 | if (check_with_gid) { |
873 | errno = 0; | |
874 | g = getgrgid((gid_t) uid); | |
875 | if (g) { | |
876 | if (!streq(g->gr_name, name)) | |
877 | return 0; | |
878 | } else if (!IN_SET(errno, 0, ENOENT)) | |
879 | return -errno; | |
880 | } | |
1b992147 LP |
881 | } |
882 | ||
883 | return 1; | |
884 | } | |
885 | ||
886 | static int root_stat(const char *p, struct stat *st) { | |
887 | const char *fix; | |
888 | ||
1d13f648 | 889 | fix = prefix_roota(arg_root, p); |
1b992147 LP |
890 | if (stat(fix, st) < 0) |
891 | return -errno; | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
897 | struct stat st; | |
898 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
899 | uid_t uid = 0; |
900 | gid_t gid = 0; | |
1b992147 LP |
901 | |
902 | assert(i); | |
903 | ||
904 | /* First, try to get the gid directly */ | |
905 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { | |
906 | gid = st.st_gid; | |
907 | found_gid = true; | |
908 | } | |
909 | ||
910 | /* Then, try to get the uid directly */ | |
911 | if ((_uid || (_gid && !found_gid)) | |
912 | && i->uid_path | |
913 | && root_stat(i->uid_path, &st) >= 0) { | |
914 | ||
915 | uid = st.st_uid; | |
916 | found_uid = true; | |
917 | ||
918 | /* If we need the gid, but had no success yet, also derive it from the uid path */ | |
919 | if (_gid && !found_gid) { | |
920 | gid = st.st_gid; | |
921 | found_gid = true; | |
922 | } | |
923 | } | |
924 | ||
925 | /* If that didn't work yet, then let's reuse the gid as uid */ | |
926 | if (_uid && !found_uid && i->gid_path) { | |
927 | ||
928 | if (found_gid) { | |
929 | uid = (uid_t) gid; | |
930 | found_uid = true; | |
931 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
932 | uid = (uid_t) st.st_gid; | |
933 | found_uid = true; | |
934 | } | |
935 | } | |
936 | ||
937 | if (_uid) { | |
938 | if (!found_uid) | |
939 | return 0; | |
940 | ||
941 | *_uid = uid; | |
942 | } | |
943 | ||
944 | if (_gid) { | |
945 | if (!found_gid) | |
946 | return 0; | |
947 | ||
948 | *_gid = gid; | |
949 | } | |
950 | ||
951 | return 1; | |
952 | } | |
953 | ||
954 | static int add_user(Item *i) { | |
955 | void *z; | |
956 | int r; | |
957 | ||
958 | assert(i); | |
959 | ||
960 | /* Check the database directly */ | |
961 | z = hashmap_get(database_user, i->name); | |
962 | if (z) { | |
963 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 964 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
965 | i->uid_set = true; |
966 | return 0; | |
967 | } | |
968 | ||
969 | if (!arg_root) { | |
970 | struct passwd *p; | |
1b992147 LP |
971 | |
972 | /* Also check NSS */ | |
973 | errno = 0; | |
974 | p = getpwnam(i->name); | |
975 | if (p) { | |
976 | log_debug("User %s already exists.", i->name); | |
977 | i->uid = p->pw_uid; | |
978 | i->uid_set = true; | |
979 | ||
2fc09a9c DM |
980 | r = free_and_strdup(&i->description, p->pw_gecos); |
981 | if (r < 0) | |
982 | return log_oom(); | |
983 | ||
1b992147 LP |
984 | return 0; |
985 | } | |
4a62c710 MS |
986 | if (!IN_SET(errno, 0, ENOENT)) |
987 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); | |
1b992147 LP |
988 | } |
989 | ||
990 | /* Try to use the suggested numeric uid */ | |
991 | if (i->uid_set) { | |
b9ee05c2 | 992 | r = uid_is_ok(i->uid, i->name, !i->id_set_strict); |
f647962d MS |
993 | if (r < 0) |
994 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
995 | if (r == 0) { |
996 | log_debug("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); | |
997 | i->uid_set = false; | |
998 | } | |
999 | } | |
1000 | ||
1001 | /* If that didn't work, try to read it from the specified path */ | |
1002 | if (!i->uid_set) { | |
1003 | uid_t c; | |
1004 | ||
1005 | if (read_id_from_file(i, &c, NULL) > 0) { | |
1006 | ||
8530dc44 | 1007 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1008 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); |
1009 | else { | |
b9ee05c2 | 1010 | r = uid_is_ok(c, i->name, true); |
f647962d MS |
1011 | if (r < 0) |
1012 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1013 | else if (r > 0) { | |
1b992147 LP |
1014 | i->uid = c; |
1015 | i->uid_set = true; | |
1016 | } else | |
1017 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
1018 | } | |
1019 | } | |
1020 | } | |
1021 | ||
b938cb90 | 1022 | /* Otherwise, try to reuse the group ID */ |
1b992147 | 1023 | if (!i->uid_set && i->gid_set) { |
b9ee05c2 | 1024 | r = uid_is_ok((uid_t) i->gid, i->name, true); |
f647962d MS |
1025 | if (r < 0) |
1026 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
1027 | if (r > 0) { |
1028 | i->uid = (uid_t) i->gid; | |
1029 | i->uid_set = true; | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* And if that didn't work either, let's try to find a free one */ | |
1034 | if (!i->uid_set) { | |
8530dc44 LP |
1035 | for (;;) { |
1036 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1037 | if (r < 0) { | |
1038 | log_error("No free user ID available for %s.", i->name); | |
1039 | return r; | |
1040 | } | |
1b992147 | 1041 | |
b9ee05c2 | 1042 | r = uid_is_ok(search_uid, i->name, true); |
f647962d MS |
1043 | if (r < 0) |
1044 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1045 | else if (r > 0) | |
1b992147 LP |
1046 | break; |
1047 | } | |
1048 | ||
1b992147 LP |
1049 | i->uid_set = true; |
1050 | i->uid = search_uid; | |
1b992147 LP |
1051 | } |
1052 | ||
5bc9c980 | 1053 | r = ordered_hashmap_ensure_allocated(&todo_uids, NULL); |
1b992147 LP |
1054 | if (r < 0) |
1055 | return log_oom(); | |
1056 | ||
5bc9c980 | 1057 | r = ordered_hashmap_put(todo_uids, UID_TO_PTR(i->uid), i); |
1b992147 LP |
1058 | if (r < 0) |
1059 | return log_oom(); | |
1060 | ||
c1b6b04f | 1061 | i->todo_user = true; |
1b992147 LP |
1062 | log_info("Creating user %s (%s) with uid " UID_FMT " and gid " GID_FMT ".", i->name, strna(i->description), i->uid, i->gid); |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | static int gid_is_ok(gid_t gid) { | |
1068 | struct group *g; | |
1069 | struct passwd *p; | |
1070 | ||
5bc9c980 | 1071 | if (ordered_hashmap_get(todo_gids, GID_TO_PTR(gid))) |
1b992147 LP |
1072 | return 0; |
1073 | ||
1074 | /* Avoid reusing gids that are already used by a different user */ | |
5bc9c980 | 1075 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(gid))) |
1b992147 LP |
1076 | return 0; |
1077 | ||
1078 | if (hashmap_contains(database_gid, GID_TO_PTR(gid))) | |
1079 | return 0; | |
1080 | ||
1081 | if (hashmap_contains(database_uid, UID_TO_PTR(gid))) | |
1082 | return 0; | |
1083 | ||
1084 | if (!arg_root) { | |
1085 | errno = 0; | |
1086 | g = getgrgid(gid); | |
1087 | if (g) | |
1088 | return 0; | |
b0284aba | 1089 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1090 | return -errno; |
1091 | ||
1092 | errno = 0; | |
1093 | p = getpwuid((uid_t) gid); | |
1094 | if (p) | |
1095 | return 0; | |
b0284aba | 1096 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1097 | return -errno; |
1098 | } | |
1099 | ||
1100 | return 1; | |
1101 | } | |
1102 | ||
1103 | static int add_group(Item *i) { | |
1104 | void *z; | |
1105 | int r; | |
1106 | ||
1107 | assert(i); | |
1108 | ||
1109 | /* Check the database directly */ | |
1110 | z = hashmap_get(database_group, i->name); | |
1111 | if (z) { | |
1112 | log_debug("Group %s already exists.", i->name); | |
1113 | i->gid = PTR_TO_GID(z); | |
1114 | i->gid_set = true; | |
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | /* Also check NSS */ | |
1119 | if (!arg_root) { | |
1120 | struct group *g; | |
1121 | ||
1122 | errno = 0; | |
1123 | g = getgrnam(i->name); | |
1124 | if (g) { | |
1125 | log_debug("Group %s already exists.", i->name); | |
1126 | i->gid = g->gr_gid; | |
1127 | i->gid_set = true; | |
1128 | return 0; | |
1129 | } | |
4a62c710 MS |
1130 | if (!IN_SET(errno, 0, ENOENT)) |
1131 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", i->name); | |
1b992147 LP |
1132 | } |
1133 | ||
1134 | /* Try to use the suggested numeric gid */ | |
1135 | if (i->gid_set) { | |
1136 | r = gid_is_ok(i->gid); | |
f647962d MS |
1137 | if (r < 0) |
1138 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
b9ee05c2 | 1139 | if (i->id_set_strict) { |
28e7fad7 MV |
1140 | /* If we require the gid to already exist we can return here: |
1141 | * r > 0: means the gid does not exist -> fail | |
1142 | * r == 0: means the gid exists -> nothing more to do. | |
1143 | */ | |
1144 | if (r > 0) { | |
1145 | log_error("Failed to create %s: please create GID %d", i->name, i->gid); | |
1146 | return -EINVAL; | |
1147 | } | |
1148 | if (r == 0) | |
1149 | return 0; | |
1150 | } | |
1b992147 LP |
1151 | if (r == 0) { |
1152 | log_debug("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); | |
1153 | i->gid_set = false; | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | /* Try to reuse the numeric uid, if there's one */ | |
1158 | if (!i->gid_set && i->uid_set) { | |
1159 | r = gid_is_ok((gid_t) i->uid); | |
f647962d MS |
1160 | if (r < 0) |
1161 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1b992147 LP |
1162 | if (r > 0) { |
1163 | i->gid = (gid_t) i->uid; | |
1164 | i->gid_set = true; | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | /* If that didn't work, try to read it from the specified path */ | |
1169 | if (!i->gid_set) { | |
1170 | gid_t c; | |
1171 | ||
1172 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1173 | ||
8530dc44 | 1174 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1175 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); |
1176 | else { | |
1177 | r = gid_is_ok(c); | |
f647962d MS |
1178 | if (r < 0) |
1179 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1180 | else if (r > 0) { | |
1b992147 LP |
1181 | i->gid = c; |
1182 | i->gid_set = true; | |
1183 | } else | |
1184 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1185 | } | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | /* And if that didn't work either, let's try to find a free one */ | |
1190 | if (!i->gid_set) { | |
8530dc44 LP |
1191 | for (;;) { |
1192 | /* We look for new GIDs in the UID pool! */ | |
1193 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
1194 | if (r < 0) { | |
1195 | log_error("No free group ID available for %s.", i->name); | |
1196 | return r; | |
1197 | } | |
1198 | ||
1199 | r = gid_is_ok(search_uid); | |
f647962d MS |
1200 | if (r < 0) |
1201 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1202 | else if (r > 0) | |
1b992147 LP |
1203 | break; |
1204 | } | |
1205 | ||
1b992147 | 1206 | i->gid_set = true; |
8530dc44 | 1207 | i->gid = search_uid; |
1b992147 LP |
1208 | } |
1209 | ||
5bc9c980 | 1210 | r = ordered_hashmap_ensure_allocated(&todo_gids, NULL); |
1b992147 LP |
1211 | if (r < 0) |
1212 | return log_oom(); | |
1213 | ||
5bc9c980 | 1214 | r = ordered_hashmap_put(todo_gids, GID_TO_PTR(i->gid), i); |
1b992147 LP |
1215 | if (r < 0) |
1216 | return log_oom(); | |
1217 | ||
c1b6b04f | 1218 | i->todo_group = true; |
1b992147 LP |
1219 | log_info("Creating group %s with gid " GID_FMT ".", i->name, i->gid); |
1220 | ||
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | static int process_item(Item *i) { | |
1225 | int r; | |
1226 | ||
1227 | assert(i); | |
1228 | ||
1229 | switch (i->type) { | |
1230 | ||
b5327d0a YW |
1231 | case ADD_USER: { |
1232 | Item *j; | |
1233 | ||
1234 | j = ordered_hashmap_get(groups, i->name); | |
1235 | if (j && j->todo_group) { | |
1236 | /* When the group with the same name is already in queue, | |
1237 | * use the information about the group and do not create | |
1238 | * duplicated group entry. */ | |
1239 | i->gid_set = j->gid_set; | |
1240 | i->gid = j->gid; | |
1241 | i->id_set_strict = true; | |
1242 | } else { | |
1243 | r = add_group(i); | |
1244 | if (r < 0) | |
1245 | return r; | |
1246 | } | |
1b992147 LP |
1247 | |
1248 | return add_user(i); | |
b5327d0a | 1249 | } |
1b992147 | 1250 | |
e2c2060f | 1251 | case ADD_GROUP: |
1b992147 | 1252 | return add_group(i); |
1b992147 | 1253 | |
a12b0cc3 LP |
1254 | default: |
1255 | assert_not_reached("Unknown item type"); | |
1256 | } | |
1b992147 LP |
1257 | } |
1258 | ||
1259 | static void item_free(Item *i) { | |
1260 | ||
1261 | if (!i) | |
1262 | return; | |
1263 | ||
1264 | free(i->name); | |
1265 | free(i->uid_path); | |
1266 | free(i->gid_path); | |
1267 | free(i->description); | |
d9b8ea54 | 1268 | free(i->home); |
7b1aaf66 | 1269 | free(i->shell); |
1b992147 LP |
1270 | free(i); |
1271 | } | |
1272 | ||
1273 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
1274 | ||
a12b0cc3 LP |
1275 | static int add_implicit(void) { |
1276 | char *g, **l; | |
1277 | Iterator iterator; | |
1278 | int r; | |
1279 | ||
1280 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
5bc9c980 | 1281 | ORDERED_HASHMAP_FOREACH_KEY(l, g, members, iterator) { |
a12b0cc3 LP |
1282 | char **m; |
1283 | ||
d4f0412d YW |
1284 | STRV_FOREACH(m, l) |
1285 | if (!ordered_hashmap_get(users, *m)) { | |
a12b0cc3 LP |
1286 | _cleanup_(item_freep) Item *j = NULL; |
1287 | ||
5bc9c980 | 1288 | r = ordered_hashmap_ensure_allocated(&users, &string_hash_ops); |
a12b0cc3 LP |
1289 | if (r < 0) |
1290 | return log_oom(); | |
1291 | ||
1292 | j = new0(Item, 1); | |
1293 | if (!j) | |
1294 | return log_oom(); | |
1295 | ||
1296 | j->type = ADD_USER; | |
1297 | j->name = strdup(*m); | |
1298 | if (!j->name) | |
1299 | return log_oom(); | |
1300 | ||
5bc9c980 | 1301 | r = ordered_hashmap_put(users, j->name, j); |
a12b0cc3 LP |
1302 | if (r < 0) |
1303 | return log_oom(); | |
1304 | ||
1305 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
1306 | j = NULL; | |
1307 | } | |
d4f0412d YW |
1308 | |
1309 | if (!(ordered_hashmap_get(users, g) || | |
1310 | ordered_hashmap_get(groups, g))) { | |
1311 | _cleanup_(item_freep) Item *j = NULL; | |
1312 | ||
1313 | r = ordered_hashmap_ensure_allocated(&groups, &string_hash_ops); | |
1314 | if (r < 0) | |
1315 | return log_oom(); | |
1316 | ||
1317 | j = new0(Item, 1); | |
1318 | if (!j) | |
1319 | return log_oom(); | |
1320 | ||
1321 | j->type = ADD_GROUP; | |
1322 | j->name = strdup(g); | |
1323 | if (!j->name) | |
1324 | return log_oom(); | |
1325 | ||
1326 | r = ordered_hashmap_put(groups, j->name, j); | |
1327 | if (r < 0) | |
1328 | return log_oom(); | |
1329 | ||
1330 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
1331 | j = NULL; | |
a12b0cc3 LP |
1332 | } |
1333 | } | |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
1b992147 LP |
1338 | static bool item_equal(Item *a, Item *b) { |
1339 | assert(a); | |
1340 | assert(b); | |
1341 | ||
1342 | if (a->type != b->type) | |
1343 | return false; | |
1344 | ||
1345 | if (!streq_ptr(a->name, b->name)) | |
1346 | return false; | |
1347 | ||
1348 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1349 | return false; | |
1350 | ||
1351 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1352 | return false; | |
1353 | ||
1354 | if (!streq_ptr(a->description, b->description)) | |
1355 | return false; | |
1356 | ||
1357 | if (a->uid_set != b->uid_set) | |
1358 | return false; | |
1359 | ||
1360 | if (a->uid_set && a->uid != b->uid) | |
1361 | return false; | |
1362 | ||
1363 | if (a->gid_set != b->gid_set) | |
1364 | return false; | |
1365 | ||
1366 | if (a->gid_set && a->gid != b->gid) | |
1367 | return false; | |
1368 | ||
7629889c LP |
1369 | if (!streq_ptr(a->home, b->home)) |
1370 | return false; | |
1371 | ||
7b1aaf66 ZJS |
1372 | if (!streq_ptr(a->shell, b->shell)) |
1373 | return false; | |
1374 | ||
1b992147 LP |
1375 | return true; |
1376 | } | |
1377 | ||
1b992147 LP |
1378 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
1379 | ||
1380 | static const Specifier specifier_table[] = { | |
1381 | { 'm', specifier_machine_id, NULL }, | |
1382 | { 'b', specifier_boot_id, NULL }, | |
1383 | { 'H', specifier_host_name, NULL }, | |
1384 | { 'v', specifier_kernel_release, NULL }, | |
1385 | {} | |
1386 | }; | |
1387 | ||
7b1aaf66 ZJS |
1388 | _cleanup_free_ char *action = NULL, |
1389 | *name = NULL, *resolved_name = NULL, | |
1390 | *id = NULL, *resolved_id = NULL, | |
1391 | *description = NULL, | |
1392 | *home = NULL, | |
1393 | *shell, *resolved_shell = NULL; | |
1b992147 LP |
1394 | _cleanup_(item_freep) Item *i = NULL; |
1395 | Item *existing; | |
5bc9c980 | 1396 | OrderedHashmap *h; |
7629889c LP |
1397 | int r; |
1398 | const char *p; | |
1b992147 LP |
1399 | |
1400 | assert(fname); | |
1401 | assert(line >= 1); | |
1402 | assert(buffer); | |
1403 | ||
7629889c LP |
1404 | /* Parse columns */ |
1405 | p = buffer; | |
7b1aaf66 ZJS |
1406 | r = extract_many_words(&p, NULL, EXTRACT_QUOTES, |
1407 | &action, &name, &id, &description, &home, &shell, NULL); | |
7629889c | 1408 | if (r < 0) { |
1b992147 | 1409 | log_error("[%s:%u] Syntax error.", fname, line); |
7629889c LP |
1410 | return r; |
1411 | } | |
1412 | if (r < 2) { | |
1413 | log_error("[%s:%u] Missing action and name columns.", fname, line); | |
1414 | return -EINVAL; | |
1415 | } | |
4b1c1753 | 1416 | if (!isempty(p)) { |
7629889c LP |
1417 | log_error("[%s:%u] Trailing garbage.", fname, line); |
1418 | return -EINVAL; | |
1b992147 LP |
1419 | } |
1420 | ||
7629889c | 1421 | /* Verify action */ |
1b992147 LP |
1422 | if (strlen(action) != 1) { |
1423 | log_error("[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1424 | return -EINVAL; | |
1425 | } | |
1426 | ||
8530dc44 | 1427 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) { |
61233823 | 1428 | log_error("[%s:%u] Unknown command type '%c'.", fname, line, action[0]); |
1b992147 LP |
1429 | return -EBADMSG; |
1430 | } | |
1431 | ||
7629889c | 1432 | /* Verify name */ |
97b11eed DH |
1433 | if (isempty(name) || streq(name, "-")) |
1434 | name = mfree(name); | |
1b992147 | 1435 | |
8530dc44 LP |
1436 | if (name) { |
1437 | r = specifier_printf(name, specifier_table, NULL, &resolved_name); | |
1438 | if (r < 0) { | |
1439 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1440 | return r; | |
1441 | } | |
1442 | ||
1443 | if (!valid_user_group_name(resolved_name)) { | |
1444 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_name); | |
1445 | return -EINVAL; | |
1446 | } | |
1b992147 LP |
1447 | } |
1448 | ||
8530dc44 | 1449 | /* Verify id */ |
97b11eed DH |
1450 | if (isempty(id) || streq(id, "-")) |
1451 | id = mfree(id); | |
7629889c | 1452 | |
8530dc44 LP |
1453 | if (id) { |
1454 | r = specifier_printf(id, specifier_table, NULL, &resolved_id); | |
1455 | if (r < 0) { | |
1456 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, name); | |
1457 | return r; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | /* Verify description */ | |
97b11eed DH |
1462 | if (isempty(description) || streq(description, "-")) |
1463 | description = mfree(description); | |
1b992147 | 1464 | |
8530dc44 LP |
1465 | if (description) { |
1466 | if (!valid_gecos(description)) { | |
1467 | log_error("[%s:%u] '%s' is not a valid GECOS field.", fname, line, description); | |
1468 | return -EINVAL; | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | /* Verify home */ | |
97b11eed DH |
1473 | if (isempty(home) || streq(home, "-")) |
1474 | home = mfree(home); | |
1b992147 | 1475 | |
8530dc44 LP |
1476 | if (home) { |
1477 | if (!valid_home(home)) { | |
1478 | log_error("[%s:%u] '%s' is not a valid home directory field.", fname, line, home); | |
1479 | return -EINVAL; | |
1480 | } | |
1481 | } | |
1482 | ||
7b1aaf66 ZJS |
1483 | /* Verify shell */ |
1484 | if (isempty(shell) || streq(shell, "-")) | |
1485 | shell = mfree(shell); | |
1486 | ||
1487 | if (shell) { | |
1488 | r = specifier_printf(shell, specifier_table, NULL, &resolved_shell); | |
1489 | if (r < 0) { | |
1490 | log_error("[%s:%u] Failed to replace specifiers: %s", fname, line, shell); | |
1491 | return r; | |
1492 | } | |
1493 | ||
1494 | if (!valid_shell(resolved_shell)) { | |
1495 | log_error("[%s:%u] '%s' is not a valid login shell field.", fname, line, resolved_shell); | |
1496 | return -EINVAL; | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | ||
a12b0cc3 | 1501 | switch (action[0]) { |
1b992147 | 1502 | |
8530dc44 LP |
1503 | case ADD_RANGE: |
1504 | if (resolved_name) { | |
1505 | log_error("[%s:%u] Lines of type 'r' don't take a name field.", fname, line); | |
1506 | return -EINVAL; | |
1507 | } | |
1b992147 | 1508 | |
8530dc44 LP |
1509 | if (!resolved_id) { |
1510 | log_error("[%s:%u] Lines of type 'r' require a ID range in the third field.", fname, line); | |
1511 | return -EINVAL; | |
1512 | } | |
1b992147 | 1513 | |
7b1aaf66 ZJS |
1514 | if (description || home || shell) { |
1515 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1516 | fname, line, action[0], | |
1517 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c LP |
1518 | return -EINVAL; |
1519 | } | |
1520 | ||
8530dc44 LP |
1521 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); |
1522 | if (r < 0) { | |
1523 | log_error("[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
a12b0cc3 LP |
1524 | return -EINVAL; |
1525 | } | |
1b992147 | 1526 | |
8530dc44 LP |
1527 | return 0; |
1528 | ||
1529 | case ADD_MEMBER: { | |
1530 | char **l; | |
1531 | ||
1532 | /* Try to extend an existing member or group item */ | |
1533 | if (!name) { | |
1534 | log_error("[%s:%u] Lines of type 'm' require a user name in the second field.", fname, line); | |
1535 | return -EINVAL; | |
1536 | } | |
1537 | ||
1538 | if (!resolved_id) { | |
1539 | log_error("[%s:%u] Lines of type 'm' require a group name in the third field.", fname, line); | |
1540 | return -EINVAL; | |
a12b0cc3 | 1541 | } |
1b992147 | 1542 | |
a12b0cc3 LP |
1543 | if (!valid_user_group_name(resolved_id)) { |
1544 | log_error("[%s:%u] '%s' is not a valid user or group name.", fname, line, resolved_id); | |
1545 | return -EINVAL; | |
1546 | } | |
1b992147 | 1547 | |
7b1aaf66 ZJS |
1548 | if (description || home || shell) { |
1549 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1550 | fname, line, action[0], | |
1551 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
8530dc44 LP |
1552 | return -EINVAL; |
1553 | } | |
1554 | ||
5bc9c980 | 1555 | r = ordered_hashmap_ensure_allocated(&members, &string_hash_ops); |
7629889c LP |
1556 | if (r < 0) |
1557 | return log_oom(); | |
a12b0cc3 | 1558 | |
5bc9c980 | 1559 | l = ordered_hashmap_get(members, resolved_id); |
a12b0cc3 LP |
1560 | if (l) { |
1561 | /* A list for this group name already exists, let's append to it */ | |
1562 | r = strv_push(&l, resolved_name); | |
1563 | if (r < 0) | |
1564 | return log_oom(); | |
1565 | ||
1566 | resolved_name = NULL; | |
1567 | ||
5bc9c980 | 1568 | assert_se(ordered_hashmap_update(members, resolved_id, l) >= 0); |
1b992147 | 1569 | } else { |
a12b0cc3 LP |
1570 | /* No list for this group name exists yet, create one */ |
1571 | ||
1572 | l = new0(char *, 2); | |
1573 | if (!l) | |
1574 | return -ENOMEM; | |
1575 | ||
1576 | l[0] = resolved_name; | |
1577 | l[1] = NULL; | |
1b992147 | 1578 | |
5bc9c980 | 1579 | r = ordered_hashmap_put(members, resolved_id, l); |
1b992147 | 1580 | if (r < 0) { |
a12b0cc3 LP |
1581 | free(l); |
1582 | return log_oom(); | |
1b992147 LP |
1583 | } |
1584 | ||
a12b0cc3 | 1585 | resolved_id = resolved_name = NULL; |
1b992147 | 1586 | } |
a12b0cc3 LP |
1587 | |
1588 | return 0; | |
1b992147 LP |
1589 | } |
1590 | ||
a12b0cc3 | 1591 | case ADD_USER: |
8530dc44 LP |
1592 | if (!name) { |
1593 | log_error("[%s:%u] Lines of type 'u' require a user name in the second field.", fname, line); | |
1594 | return -EINVAL; | |
1595 | } | |
1596 | ||
5bc9c980 | 1597 | r = ordered_hashmap_ensure_allocated(&users, &string_hash_ops); |
a12b0cc3 LP |
1598 | if (r < 0) |
1599 | return log_oom(); | |
1600 | ||
1601 | i = new0(Item, 1); | |
1602 | if (!i) | |
1603 | return log_oom(); | |
1604 | ||
8530dc44 LP |
1605 | if (resolved_id) { |
1606 | if (path_is_absolute(resolved_id)) { | |
1607 | i->uid_path = resolved_id; | |
1608 | resolved_id = NULL; | |
a12b0cc3 LP |
1609 | |
1610 | path_kill_slashes(i->uid_path); | |
a12b0cc3 | 1611 | } else { |
4cb41413 MV |
1612 | _cleanup_free_ char *uid = NULL, *gid = NULL; |
1613 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1614 | r = parse_gid(gid, &i->gid); | |
1615 | if (r < 0) | |
1616 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1617 | i->gid_set = true; | |
b9ee05c2 | 1618 | i->id_set_strict = true; |
4cb41413 | 1619 | free_and_replace(resolved_id, uid); |
a12b0cc3 | 1620 | } |
1825c909 MV |
1621 | if (!streq(resolved_id, "-")) { |
1622 | r = parse_uid(resolved_id, &i->uid); | |
1623 | if (r < 0) | |
1624 | return log_error_errno(r, "Failed to parse UID: '%s': %m", id); | |
1625 | i->uid_set = true; | |
1626 | } | |
a12b0cc3 LP |
1627 | } |
1628 | } | |
1629 | ||
8530dc44 LP |
1630 | i->description = description; |
1631 | description = NULL; | |
7629889c | 1632 | |
8530dc44 LP |
1633 | i->home = home; |
1634 | home = NULL; | |
a12b0cc3 | 1635 | |
7b1aaf66 ZJS |
1636 | i->shell = resolved_shell; |
1637 | resolved_shell = NULL; | |
1638 | ||
1b992147 | 1639 | h = users; |
a12b0cc3 LP |
1640 | break; |
1641 | ||
1642 | case ADD_GROUP: | |
8530dc44 LP |
1643 | if (!name) { |
1644 | log_error("[%s:%u] Lines of type 'g' require a user name in the second field.", fname, line); | |
1645 | return -EINVAL; | |
1646 | } | |
a12b0cc3 | 1647 | |
7b1aaf66 ZJS |
1648 | if (description || home || shell) { |
1649 | log_error("[%s:%u] Lines of type '%c' don't take a %s field.", | |
1650 | fname, line, action[0], | |
1651 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c LP |
1652 | return -EINVAL; |
1653 | } | |
1654 | ||
5bc9c980 | 1655 | r = ordered_hashmap_ensure_allocated(&groups, &string_hash_ops); |
7629889c LP |
1656 | if (r < 0) |
1657 | return log_oom(); | |
1658 | ||
a12b0cc3 LP |
1659 | i = new0(Item, 1); |
1660 | if (!i) | |
1661 | return log_oom(); | |
1662 | ||
8530dc44 LP |
1663 | if (resolved_id) { |
1664 | if (path_is_absolute(resolved_id)) { | |
1665 | i->gid_path = resolved_id; | |
1666 | resolved_id = NULL; | |
a12b0cc3 LP |
1667 | |
1668 | path_kill_slashes(i->gid_path); | |
1669 | } else { | |
8530dc44 | 1670 | r = parse_gid(resolved_id, &i->gid); |
4cb41413 MV |
1671 | if (r < 0) |
1672 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
a12b0cc3 LP |
1673 | |
1674 | i->gid_set = true; | |
1675 | } | |
1676 | } | |
1677 | ||
1b992147 | 1678 | h = groups; |
a12b0cc3 | 1679 | break; |
8530dc44 | 1680 | |
bce415ed RC |
1681 | default: |
1682 | return -EBADMSG; | |
1b992147 | 1683 | } |
a12b0cc3 LP |
1684 | |
1685 | i->type = action[0]; | |
1686 | i->name = resolved_name; | |
1687 | resolved_name = NULL; | |
1b992147 | 1688 | |
5bc9c980 | 1689 | existing = ordered_hashmap_get(h, i->name); |
1b992147 LP |
1690 | if (existing) { |
1691 | ||
1692 | /* Two identical items are fine */ | |
1693 | if (!item_equal(existing, i)) | |
1694 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->name); | |
1695 | ||
1696 | return 0; | |
1697 | } | |
1698 | ||
5bc9c980 | 1699 | r = ordered_hashmap_put(h, i->name, i); |
a12b0cc3 LP |
1700 | if (r < 0) |
1701 | return log_oom(); | |
1b992147 LP |
1702 | |
1703 | i = NULL; | |
1704 | return 0; | |
1705 | } | |
1706 | ||
1707 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
dfc87cbf LP |
1708 | _cleanup_fclose_ FILE *rf = NULL; |
1709 | FILE *f = NULL; | |
1b992147 LP |
1710 | char line[LINE_MAX]; |
1711 | unsigned v = 0; | |
c4640902 | 1712 | int r = 0; |
1b992147 LP |
1713 | |
1714 | assert(fn); | |
1715 | ||
dfc87cbf LP |
1716 | if (streq(fn, "-")) |
1717 | f = stdin; | |
1718 | else { | |
1719 | r = search_and_fopen_nulstr(fn, "re", arg_root, conf_file_dirs, &rf); | |
1720 | if (r < 0) { | |
1721 | if (ignore_enoent && r == -ENOENT) | |
1722 | return 0; | |
1b992147 | 1723 | |
8d3d7072 | 1724 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); |
dfc87cbf LP |
1725 | } |
1726 | ||
1727 | f = rf; | |
1b992147 LP |
1728 | } |
1729 | ||
1730 | FOREACH_LINE(line, f, break) { | |
1731 | char *l; | |
1732 | int k; | |
1733 | ||
1734 | v++; | |
1735 | ||
1736 | l = strstrip(line); | |
4c701096 | 1737 | if (IN_SET(*l, 0, '#')) |
1b992147 LP |
1738 | continue; |
1739 | ||
1740 | k = parse_line(fn, v, l); | |
1741 | if (k < 0 && r == 0) | |
1742 | r = k; | |
1743 | } | |
1744 | ||
1745 | if (ferror(f)) { | |
56f64d95 | 1746 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
1b992147 LP |
1747 | if (r == 0) |
1748 | r = -EIO; | |
1749 | } | |
1750 | ||
1751 | return r; | |
1752 | } | |
1753 | ||
1b992147 LP |
1754 | static void free_database(Hashmap *by_name, Hashmap *by_id) { |
1755 | char *name; | |
1756 | ||
1757 | for (;;) { | |
1758 | name = hashmap_first(by_id); | |
1759 | if (!name) | |
1760 | break; | |
1761 | ||
1762 | hashmap_remove(by_name, name); | |
1763 | ||
1764 | hashmap_steal_first_key(by_id); | |
1765 | free(name); | |
1766 | } | |
1767 | ||
1768 | while ((name = hashmap_steal_first_key(by_name))) | |
1769 | free(name); | |
1770 | ||
1771 | hashmap_free(by_name); | |
1772 | hashmap_free(by_id); | |
1773 | } | |
1774 | ||
601185b4 | 1775 | static void help(void) { |
1b992147 LP |
1776 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1777 | "Creates system user accounts.\n\n" | |
1778 | " -h --help Show this help\n" | |
1779 | " --version Show package version\n" | |
601185b4 | 1780 | " --root=PATH Operate on an alternate filesystem root\n" |
d16a1c1b | 1781 | " --replace=PATH Treat arguments as replacement for PATH\n" |
1b600bd5 | 1782 | " --inline Treat arguments as configuration lines\n" |
601185b4 | 1783 | , program_invocation_short_name); |
1b992147 LP |
1784 | } |
1785 | ||
1786 | static int parse_argv(int argc, char *argv[]) { | |
1787 | ||
1788 | enum { | |
1789 | ARG_VERSION = 0x100, | |
1790 | ARG_ROOT, | |
d16a1c1b | 1791 | ARG_REPLACE, |
1b600bd5 | 1792 | ARG_INLINE, |
1b992147 LP |
1793 | }; |
1794 | ||
1795 | static const struct option options[] = { | |
1796 | { "help", no_argument, NULL, 'h' }, | |
1797 | { "version", no_argument, NULL, ARG_VERSION }, | |
1798 | { "root", required_argument, NULL, ARG_ROOT }, | |
d16a1c1b | 1799 | { "replace", required_argument, NULL, ARG_REPLACE }, |
1b600bd5 | 1800 | { "inline", no_argument, NULL, ARG_INLINE }, |
1b992147 LP |
1801 | {} |
1802 | }; | |
1803 | ||
0f474365 | 1804 | int c, r; |
1b992147 LP |
1805 | |
1806 | assert(argc >= 0); | |
1807 | assert(argv); | |
1808 | ||
601185b4 | 1809 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
1810 | |
1811 | switch (c) { | |
1812 | ||
1813 | case 'h': | |
601185b4 ZJS |
1814 | help(); |
1815 | return 0; | |
1b992147 LP |
1816 | |
1817 | case ARG_VERSION: | |
3f6fd1ba | 1818 | return version(); |
1b992147 LP |
1819 | |
1820 | case ARG_ROOT: | |
0f03c2a4 | 1821 | r = parse_path_argument_and_warn(optarg, true, &arg_root); |
0f474365 | 1822 | if (r < 0) |
0f03c2a4 | 1823 | return r; |
1b992147 LP |
1824 | break; |
1825 | ||
d16a1c1b ZJS |
1826 | case ARG_REPLACE: |
1827 | if (!path_is_absolute(optarg) || | |
1828 | !endswith(optarg, ".conf")) { | |
1829 | log_error("The argument to --replace= must an absolute path to a config file"); | |
1830 | return -EINVAL; | |
1831 | } | |
1832 | ||
1833 | arg_replace = optarg; | |
1834 | break; | |
1835 | ||
1b600bd5 ZJS |
1836 | case ARG_INLINE: |
1837 | arg_inline = true; | |
1838 | break; | |
1839 | ||
1b992147 LP |
1840 | case '?': |
1841 | return -EINVAL; | |
1842 | ||
1843 | default: | |
1844 | assert_not_reached("Unhandled option"); | |
1845 | } | |
1b992147 | 1846 | |
d16a1c1b ZJS |
1847 | if (arg_replace && optind >= argc) { |
1848 | log_error("When --replace= is given, some configuration items must be specified"); | |
1849 | return -EINVAL; | |
1850 | } | |
1851 | ||
1b992147 LP |
1852 | return 1; |
1853 | } | |
1854 | ||
d16a1c1b ZJS |
1855 | static int parse_arguments(char **args) { |
1856 | char **arg; | |
1857 | unsigned pos = 1; | |
1858 | int r; | |
1859 | ||
1860 | STRV_FOREACH(arg, args) { | |
1861 | if (arg_inline) | |
1862 | /* Use (argument):n, where n==1 for the first positional arg */ | |
1863 | r = parse_line("(argument)", pos, *arg); | |
1864 | else | |
1865 | r = read_config_file(*arg, false); | |
1866 | if (r < 0) | |
1867 | return r; | |
1868 | ||
1869 | pos++; | |
1870 | } | |
1871 | ||
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | static int read_config_files(const char* dirs, char **args) { | |
1876 | _cleanup_strv_free_ char **files = NULL; | |
1877 | _cleanup_free_ char *p = NULL; | |
1878 | char **f; | |
1879 | int r; | |
1880 | ||
1881 | r = conf_files_list_nulstr(&files, ".conf", arg_root, 0, dirs); | |
1882 | if (r < 0) | |
1883 | return log_error_errno(r, "Failed to enumerate sysusers.d files: %m"); | |
1884 | ||
1885 | if (arg_replace) { | |
a6d8474f | 1886 | r = conf_files_insert_nulstr(&files, arg_root, dirs, arg_replace); |
d16a1c1b ZJS |
1887 | if (r < 0) |
1888 | return log_error_errno(r, "Failed to extend sysusers.d file list: %m"); | |
1889 | ||
1890 | p = path_join(arg_root, arg_replace, NULL); | |
1891 | if (!p) | |
1892 | return log_oom(); | |
1893 | } | |
1894 | ||
1895 | STRV_FOREACH(f, files) | |
1896 | if (p && path_equal(*f, p)) { | |
1897 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
1898 | ||
1899 | r = parse_arguments(args); | |
1900 | if (r < 0) | |
1901 | return r; | |
1902 | } else { | |
1903 | log_debug("Reading config file \"%s\"…", *f); | |
1904 | ||
1905 | /* Just warn, ignore result otherwise */ | |
1906 | (void) read_config_file(*f, true); | |
1907 | } | |
1908 | ||
1909 | return 0; | |
1910 | } | |
1911 | ||
1b992147 LP |
1912 | int main(int argc, char *argv[]) { |
1913 | ||
1914 | _cleanup_close_ int lock = -1; | |
1915 | Iterator iterator; | |
d16a1c1b | 1916 | int r; |
1b992147 | 1917 | Item *i; |
a12b0cc3 | 1918 | char *n; |
1b992147 LP |
1919 | |
1920 | r = parse_argv(argc, argv); | |
1921 | if (r <= 0) | |
1922 | goto finish; | |
1923 | ||
1924 | log_set_target(LOG_TARGET_AUTO); | |
1925 | log_parse_environment(); | |
1926 | log_open(); | |
1927 | ||
1928 | umask(0022); | |
1929 | ||
c3dacc8b | 1930 | r = mac_selinux_init(); |
9f1c1940 | 1931 | if (r < 0) { |
da927ba9 | 1932 | log_error_errno(r, "SELinux setup failed: %m"); |
9f1c1940 ZJS |
1933 | goto finish; |
1934 | } | |
1b992147 | 1935 | |
d16a1c1b ZJS |
1936 | /* If command line arguments are specified along with --replace, read all |
1937 | * configuration files and insert the positional arguments at the specified | |
1938 | * place. Otherwise, if command line arguments are specified, execute just | |
1939 | * them, and finally, without --replace= or any positional arguments, just | |
1940 | * read configuration and execute it. | |
1941 | */ | |
1942 | if (arg_replace || optind >= argc) | |
1943 | r = read_config_files(conf_file_dirs, argv + optind); | |
1944 | else | |
1945 | r = parse_arguments(argv + optind); | |
1946 | if (r < 0) | |
1947 | goto finish; | |
1b992147 | 1948 | |
fe102d6a LP |
1949 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection |
1950 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
1951 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
1952 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
1953 | * /etc. */ | |
1954 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) { | |
1955 | r = log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
1956 | goto finish; | |
1957 | } | |
1958 | ||
8530dc44 | 1959 | if (!uid_range) { |
b9ee05c2 | 1960 | /* Default to default range of 1..SYSTEM_UID_MAX */ |
8530dc44 LP |
1961 | r = uid_range_add(&uid_range, &n_uid_range, 1, SYSTEM_UID_MAX); |
1962 | if (r < 0) { | |
1963 | log_oom(); | |
1964 | goto finish; | |
1965 | } | |
1966 | } | |
1967 | ||
a12b0cc3 LP |
1968 | r = add_implicit(); |
1969 | if (r < 0) | |
1970 | goto finish; | |
1971 | ||
e929bee0 | 1972 | lock = take_etc_passwd_lock(arg_root); |
1b992147 | 1973 | if (lock < 0) { |
d1e4b8fd | 1974 | log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); |
1b992147 LP |
1975 | goto finish; |
1976 | } | |
1977 | ||
1978 | r = load_user_database(); | |
1979 | if (r < 0) { | |
da927ba9 | 1980 | log_error_errno(r, "Failed to load user database: %m"); |
1b992147 LP |
1981 | goto finish; |
1982 | } | |
1983 | ||
1984 | r = load_group_database(); | |
1985 | if (r < 0) { | |
da927ba9 | 1986 | log_error_errno(r, "Failed to read group database: %m"); |
1b992147 LP |
1987 | goto finish; |
1988 | } | |
1989 | ||
5bc9c980 | 1990 | ORDERED_HASHMAP_FOREACH(i, groups, iterator) |
1b992147 LP |
1991 | process_item(i); |
1992 | ||
5bc9c980 | 1993 | ORDERED_HASHMAP_FOREACH(i, users, iterator) |
1b992147 LP |
1994 | process_item(i); |
1995 | ||
1996 | r = write_files(); | |
1997 | if (r < 0) | |
da927ba9 | 1998 | log_error_errno(r, "Failed to write files: %m"); |
1b992147 LP |
1999 | |
2000 | finish: | |
5bc9c980 MV |
2001 | ordered_hashmap_free_with_destructor(groups, item_free); |
2002 | ordered_hashmap_free_with_destructor(users, item_free); | |
1b992147 | 2003 | |
5bc9c980 MV |
2004 | while ((n = ordered_hashmap_first_key(members))) { |
2005 | strv_free(ordered_hashmap_steal_first(members)); | |
a12b0cc3 LP |
2006 | free(n); |
2007 | } | |
5bc9c980 | 2008 | ordered_hashmap_free(members); |
224b0e7a | 2009 | |
5bc9c980 MV |
2010 | ordered_hashmap_free(todo_uids); |
2011 | ordered_hashmap_free(todo_gids); | |
1b992147 LP |
2012 | |
2013 | free_database(database_user, database_uid); | |
2014 | free_database(database_group, database_gid); | |
2015 | ||
2016 | free(arg_root); | |
2017 | ||
2018 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
2019 | } |