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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
1b992147 | 2 | |
3f6fd1ba | 3 | #include <getopt.h> |
932ad62b | 4 | #include <utmp.h> |
1b992147 | 5 | |
b5efdb8a | 6 | #include "alloc-util.h" |
1b992147 LP |
7 | #include "conf-files.h" |
8 | #include "copy.h" | |
99e9f896 | 9 | #include "creds-util.h" |
a0f29c76 | 10 | #include "def.h" |
0c3ee127 | 11 | #include "dissect-image.h" |
a0f29c76 | 12 | #include "fd-util.h" |
ee228be1 | 13 | #include "fileio.h" |
f97b34a6 | 14 | #include "format-util.h" |
dcd5c891 | 15 | #include "fs-util.h" |
3f6fd1ba | 16 | #include "hashmap.h" |
99e9f896 | 17 | #include "libcrypt-util.h" |
71da1673 | 18 | #include "main-func.h" |
99e9f896 | 19 | #include "memory-util.h" |
0c3ee127 | 20 | #include "mount-util.h" |
d481b830 | 21 | #include "nscd-flush.h" |
dcd5c891 | 22 | #include "pager.h" |
614b022c | 23 | #include "parse-argument.h" |
3f6fd1ba | 24 | #include "path-util.h" |
294bf0c3 | 25 | #include "pretty-print.h" |
3f6fd1ba | 26 | #include "selinux-util.h" |
0c3ee127 | 27 | #include "set.h" |
07630cea | 28 | #include "smack-util.h" |
3f6fd1ba | 29 | #include "specifier.h" |
07630cea | 30 | #include "string-util.h" |
3f6fd1ba | 31 | #include "strv.h" |
bf819d3a | 32 | #include "sync-util.h" |
e4de7287 | 33 | #include "tmpfile-util-label.h" |
b085d224 | 34 | #include "uid-alloc-range.h" |
3f6fd1ba | 35 | #include "uid-range.h" |
a0f29c76 | 36 | #include "user-util.h" |
3f6fd1ba LP |
37 | #include "utf8.h" |
38 | #include "util.h" | |
1b992147 LP |
39 | |
40 | typedef enum ItemType { | |
9a5af4b7 ZJS |
41 | ADD_USER = 'u', |
42 | ADD_GROUP = 'g', | |
a12b0cc3 | 43 | ADD_MEMBER = 'm', |
9a5af4b7 | 44 | ADD_RANGE = 'r', |
1b992147 | 45 | } ItemType; |
dcd5c891 | 46 | |
9a5af4b7 ZJS |
47 | static inline const char* item_type_to_string(ItemType t) { |
48 | switch (t) { | |
49 | case ADD_USER: | |
50 | return "user"; | |
51 | case ADD_GROUP: | |
52 | return "group"; | |
53 | case ADD_MEMBER: | |
54 | return "member"; | |
55 | case ADD_RANGE: | |
56 | return "range"; | |
57 | default: | |
58 | assert_not_reached(); | |
59 | } | |
60 | } | |
61 | ||
1b992147 LP |
62 | typedef struct Item { |
63 | ItemType type; | |
64 | ||
65 | char *name; | |
649916d3 | 66 | char *group_name; |
1b992147 LP |
67 | char *uid_path; |
68 | char *gid_path; | |
69 | char *description; | |
7629889c | 70 | char *home; |
7b1aaf66 | 71 | char *shell; |
1b992147 LP |
72 | |
73 | gid_t gid; | |
74 | uid_t uid; | |
75 | ||
76 | bool gid_set:1; | |
fb959f14 | 77 | |
3f316701 ZJS |
78 | /* When set the group with the specified GID must exist |
79 | * and the check if a UID clashes with the GID is skipped. | |
fb959f14 | 80 | */ |
b9ee05c2 | 81 | bool id_set_strict:1; |
fb959f14 | 82 | |
1b992147 LP |
83 | bool uid_set:1; |
84 | ||
c1b6b04f KS |
85 | bool todo_user:1; |
86 | bool todo_group:1; | |
1b992147 LP |
87 | } Item; |
88 | ||
89 | static char *arg_root = NULL; | |
0c3ee127 | 90 | static char *arg_image = NULL; |
ec0327d6 | 91 | static bool arg_cat_config = false; |
d16a1c1b | 92 | static const char *arg_replace = NULL; |
64fe1095 | 93 | static bool arg_dry_run = false; |
1b600bd5 | 94 | static bool arg_inline = false; |
0221d68a | 95 | static PagerFlags arg_pager_flags = 0; |
1b992147 | 96 | |
5bc9c980 MV |
97 | static OrderedHashmap *users = NULL, *groups = NULL; |
98 | static OrderedHashmap *todo_uids = NULL, *todo_gids = NULL; | |
99 | static OrderedHashmap *members = NULL; | |
1b992147 | 100 | |
71da1673 YW |
101 | static Hashmap *database_by_uid = NULL, *database_by_username = NULL; |
102 | static Hashmap *database_by_gid = NULL, *database_by_groupname = NULL; | |
103 | static Set *database_users = NULL, *database_groups = NULL; | |
1b992147 | 104 | |
fed1e721 | 105 | static uid_t search_uid = UID_INVALID; |
8530dc44 LP |
106 | static UidRange *uid_range = NULL; |
107 | static unsigned n_uid_range = 0; | |
1b992147 | 108 | |
4b6f9b20 ZJS |
109 | static UGIDAllocationRange login_defs = {}; |
110 | static bool login_defs_need_warning = false; | |
111 | ||
71da1673 YW |
112 | STATIC_DESTRUCTOR_REGISTER(groups, ordered_hashmap_freep); |
113 | STATIC_DESTRUCTOR_REGISTER(users, ordered_hashmap_freep); | |
114 | STATIC_DESTRUCTOR_REGISTER(members, ordered_hashmap_freep); | |
115 | STATIC_DESTRUCTOR_REGISTER(todo_uids, ordered_hashmap_freep); | |
116 | STATIC_DESTRUCTOR_REGISTER(todo_gids, ordered_hashmap_freep); | |
117 | STATIC_DESTRUCTOR_REGISTER(database_by_uid, hashmap_freep); | |
118 | STATIC_DESTRUCTOR_REGISTER(database_by_username, hashmap_freep); | |
119 | STATIC_DESTRUCTOR_REGISTER(database_users, set_free_freep); | |
120 | STATIC_DESTRUCTOR_REGISTER(database_by_gid, hashmap_freep); | |
121 | STATIC_DESTRUCTOR_REGISTER(database_by_groupname, hashmap_freep); | |
122 | STATIC_DESTRUCTOR_REGISTER(database_groups, set_free_freep); | |
123 | STATIC_DESTRUCTOR_REGISTER(uid_range, freep); | |
124 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
0c3ee127 | 125 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
71da1673 | 126 | |
08c7c321 ZJS |
127 | static int errno_is_not_exists(int code) { |
128 | /* See getpwnam(3) and getgrnam(3): those codes and others can be returned if the user or group are | |
129 | * not found. */ | |
130 | return IN_SET(code, 0, ENOENT, ESRCH, EBADF, EPERM); | |
131 | } | |
132 | ||
4b6f9b20 ZJS |
133 | static void maybe_emit_login_defs_warning(void) { |
134 | if (!login_defs_need_warning) | |
135 | return; | |
136 | ||
137 | if (login_defs.system_alloc_uid_min != SYSTEM_ALLOC_UID_MIN || | |
138 | login_defs.system_uid_max != SYSTEM_UID_MAX) | |
139 | log_warning("login.defs specifies UID allocation range "UID_FMT"–"UID_FMT | |
140 | " that is different than the built-in defaults ("UID_FMT"–"UID_FMT")", | |
141 | login_defs.system_alloc_uid_min, login_defs.system_uid_max, | |
142 | SYSTEM_ALLOC_UID_MIN, SYSTEM_UID_MAX); | |
143 | if (login_defs.system_alloc_gid_min != SYSTEM_ALLOC_GID_MIN || | |
144 | login_defs.system_gid_max != SYSTEM_GID_MAX) | |
145 | log_warning("login.defs specifies GID allocation range "GID_FMT"–"GID_FMT | |
146 | " that is different than the built-in defaults ("GID_FMT"–"GID_FMT")", | |
147 | login_defs.system_alloc_gid_min, login_defs.system_gid_max, | |
148 | SYSTEM_ALLOC_GID_MIN, SYSTEM_GID_MAX); | |
149 | ||
150 | login_defs_need_warning = false; | |
151 | } | |
152 | ||
1b992147 LP |
153 | static int load_user_database(void) { |
154 | _cleanup_fclose_ FILE *f = NULL; | |
155 | const char *passwd_path; | |
156 | struct passwd *pw; | |
157 | int r; | |
158 | ||
1d13f648 | 159 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); |
1b992147 LP |
160 | f = fopen(passwd_path, "re"); |
161 | if (!f) | |
162 | return errno == ENOENT ? 0 : -errno; | |
163 | ||
71da1673 | 164 | r = hashmap_ensure_allocated(&database_by_username, &string_hash_ops); |
1b992147 LP |
165 | if (r < 0) |
166 | return r; | |
167 | ||
71da1673 | 168 | r = hashmap_ensure_allocated(&database_by_uid, NULL); |
1b992147 LP |
169 | if (r < 0) |
170 | return r; | |
171 | ||
71da1673 | 172 | r = set_ensure_allocated(&database_users, NULL); |
1b992147 LP |
173 | if (r < 0) |
174 | return r; | |
175 | ||
100d5f6e | 176 | while ((r = fgetpwent_sane(f, &pw)) > 0) { |
43e948ee | 177 | char *n; |
340ac019 | 178 | int k, q; |
1b992147 LP |
179 | |
180 | n = strdup(pw->pw_name); | |
181 | if (!n) | |
182 | return -ENOMEM; | |
183 | ||
71da1673 YW |
184 | k = set_put(database_users, n); |
185 | if (k < 0) { | |
1b992147 LP |
186 | free(n); |
187 | return k; | |
188 | } | |
189 | ||
71da1673 YW |
190 | k = hashmap_put(database_by_username, n, UID_TO_PTR(pw->pw_uid)); |
191 | if (k < 0 && k != -EEXIST) | |
192 | return k; | |
1b992147 | 193 | |
71da1673 YW |
194 | q = hashmap_put(database_by_uid, UID_TO_PTR(pw->pw_uid), n); |
195 | if (q < 0 && q != -EEXIST) | |
196 | return q; | |
1b992147 | 197 | } |
100d5f6e | 198 | return r; |
1b992147 LP |
199 | } |
200 | ||
201 | static int load_group_database(void) { | |
202 | _cleanup_fclose_ FILE *f = NULL; | |
203 | const char *group_path; | |
204 | struct group *gr; | |
205 | int r; | |
206 | ||
1d13f648 | 207 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
208 | f = fopen(group_path, "re"); |
209 | if (!f) | |
210 | return errno == ENOENT ? 0 : -errno; | |
211 | ||
71da1673 | 212 | r = hashmap_ensure_allocated(&database_by_groupname, &string_hash_ops); |
1b992147 LP |
213 | if (r < 0) |
214 | return r; | |
215 | ||
71da1673 | 216 | r = hashmap_ensure_allocated(&database_by_gid, NULL); |
1b992147 LP |
217 | if (r < 0) |
218 | return r; | |
219 | ||
71da1673 | 220 | r = set_ensure_allocated(&database_groups, NULL); |
1b992147 LP |
221 | if (r < 0) |
222 | return r; | |
223 | ||
f030d36c | 224 | while ((r = fgetgrent_sane(f, &gr)) > 0) { |
1b992147 LP |
225 | char *n; |
226 | int k, q; | |
227 | ||
228 | n = strdup(gr->gr_name); | |
229 | if (!n) | |
230 | return -ENOMEM; | |
231 | ||
71da1673 YW |
232 | k = set_put(database_groups, n); |
233 | if (k < 0) { | |
1b992147 LP |
234 | free(n); |
235 | return k; | |
236 | } | |
237 | ||
71da1673 YW |
238 | k = hashmap_put(database_by_groupname, n, GID_TO_PTR(gr->gr_gid)); |
239 | if (k < 0 && k != -EEXIST) | |
240 | return k; | |
1b992147 | 241 | |
71da1673 YW |
242 | q = hashmap_put(database_by_gid, GID_TO_PTR(gr->gr_gid), n); |
243 | if (q < 0 && q != -EEXIST) | |
244 | return q; | |
1b992147 | 245 | } |
f030d36c | 246 | return r; |
1b992147 LP |
247 | } |
248 | ||
9f1c1940 | 249 | static int make_backup(const char *target, const char *x) { |
62c03398 | 250 | _cleanup_(unlink_and_freep) char *dst_tmp = NULL; |
9f1c1940 | 251 | _cleanup_fclose_ FILE *dst = NULL; |
62c03398 LP |
252 | _cleanup_close_ int src = -1; |
253 | const char *backup; | |
1b992147 LP |
254 | struct stat st; |
255 | int r; | |
256 | ||
62c03398 LP |
257 | assert(target); |
258 | assert(x); | |
259 | ||
1b992147 LP |
260 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
261 | if (src < 0) { | |
262 | if (errno == ENOENT) /* No backup necessary... */ | |
263 | return 0; | |
264 | ||
265 | return -errno; | |
266 | } | |
267 | ||
268 | if (fstat(src, &st) < 0) | |
269 | return -errno; | |
270 | ||
62c03398 LP |
271 | r = fopen_temporary_label( |
272 | target, /* The path for which to the lookup the label */ | |
273 | x, /* Where we want the file actually to end up */ | |
274 | &dst, | |
275 | &dst_tmp /* The temporary file we write to */); | |
9f1c1940 ZJS |
276 | if (r < 0) |
277 | return r; | |
1b992147 | 278 | |
f5fbe71d | 279 | r = copy_bytes(src, fileno(dst), UINT64_MAX, COPY_REFLINK); |
1b992147 | 280 | if (r < 0) |
62c03398 | 281 | return r; |
9f1c1940 | 282 | |
63c372cb | 283 | backup = strjoina(x, "-"); |
9f1c1940 | 284 | |
62c03398 LP |
285 | /* Copy over the access mask. Don't fail on chmod() or chown(). If it stays owned by us and/or |
286 | * unreadable by others, then it isn't too bad... */ | |
287 | r = fchmod_and_chown(fileno(dst), st.st_mode & 07777, st.st_uid, st.st_gid); | |
c039af23 YW |
288 | if (r < 0) |
289 | log_warning_errno(r, "Failed to change access mode or ownership of %s: %m", backup); | |
1b992147 | 290 | |
62c03398 | 291 | if (futimens(fileno(dst), (const struct timespec[2]) { st.st_atim, st.st_mtim }) < 0) |
56f64d95 | 292 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 293 | |
62c03398 | 294 | r = fsync_full(fileno(dst)); |
0675e94a | 295 | if (r < 0) |
62c03398 | 296 | return r; |
0675e94a | 297 | |
62c03398 LP |
298 | if (rename(dst_tmp, backup) < 0) |
299 | return errno; | |
1b992147 | 300 | |
7802194a | 301 | dst_tmp = mfree(dst_tmp); /* disable the unlink_and_freep() hook now that the file has been renamed */ |
1b992147 | 302 | return 0; |
1b992147 LP |
303 | } |
304 | ||
a12b0cc3 LP |
305 | static int putgrent_with_members(const struct group *gr, FILE *group) { |
306 | char **a; | |
307 | ||
308 | assert(gr); | |
309 | assert(group); | |
310 | ||
5bc9c980 | 311 | a = ordered_hashmap_get(members, gr->gr_name); |
a12b0cc3 LP |
312 | if (a) { |
313 | _cleanup_strv_free_ char **l = NULL; | |
314 | bool added = false; | |
315 | char **i; | |
316 | ||
317 | l = strv_copy(gr->gr_mem); | |
318 | if (!l) | |
319 | return -ENOMEM; | |
320 | ||
321 | STRV_FOREACH(i, a) { | |
322 | if (strv_find(l, *i)) | |
323 | continue; | |
324 | ||
325 | if (strv_extend(&l, *i) < 0) | |
326 | return -ENOMEM; | |
327 | ||
328 | added = true; | |
329 | } | |
330 | ||
331 | if (added) { | |
332 | struct group t; | |
100d5f6e | 333 | int r; |
a12b0cc3 LP |
334 | |
335 | strv_uniq(l); | |
336 | strv_sort(l); | |
337 | ||
338 | t = *gr; | |
339 | t.gr_mem = l; | |
340 | ||
100d5f6e FB |
341 | r = putgrent_sane(&t, group); |
342 | return r < 0 ? r : 1; | |
a12b0cc3 LP |
343 | } |
344 | } | |
345 | ||
100d5f6e | 346 | return putgrent_sane(gr, group); |
a12b0cc3 LP |
347 | } |
348 | ||
349cc4a5 | 349 | #if ENABLE_GSHADOW |
9ab315cc LP |
350 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { |
351 | char **a; | |
352 | ||
353 | assert(sg); | |
354 | assert(gshadow); | |
355 | ||
5bc9c980 | 356 | a = ordered_hashmap_get(members, sg->sg_namp); |
9ab315cc LP |
357 | if (a) { |
358 | _cleanup_strv_free_ char **l = NULL; | |
359 | bool added = false; | |
360 | char **i; | |
361 | ||
362 | l = strv_copy(sg->sg_mem); | |
363 | if (!l) | |
364 | return -ENOMEM; | |
365 | ||
366 | STRV_FOREACH(i, a) { | |
367 | if (strv_find(l, *i)) | |
368 | continue; | |
369 | ||
370 | if (strv_extend(&l, *i) < 0) | |
371 | return -ENOMEM; | |
372 | ||
373 | added = true; | |
374 | } | |
375 | ||
376 | if (added) { | |
377 | struct sgrp t; | |
100d5f6e | 378 | int r; |
9ab315cc LP |
379 | |
380 | strv_uniq(l); | |
381 | strv_sort(l); | |
382 | ||
383 | t = *sg; | |
384 | t.sg_mem = l; | |
385 | ||
100d5f6e FB |
386 | r = putsgent_sane(&t, gshadow); |
387 | return r < 0 ? r : 1; | |
9ab315cc LP |
388 | } |
389 | } | |
390 | ||
100d5f6e | 391 | return putsgent_sane(sg, gshadow); |
9ab315cc | 392 | } |
b14e1b43 | 393 | #endif |
9ab315cc | 394 | |
7b1aaf66 | 395 | static const char* default_shell(uid_t uid) { |
6db90462 | 396 | return uid == 0 ? "/bin/sh" : NOLOGIN; |
7b1aaf66 ZJS |
397 | } |
398 | ||
b20b0b66 FB |
399 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { |
400 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
1dd98a71 | 401 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
563dc6f8 | 402 | struct passwd *pw = NULL; |
1b992147 LP |
403 | Item *i; |
404 | int r; | |
405 | ||
98167876 | 406 | if (ordered_hashmap_isempty(todo_uids)) |
b20b0b66 | 407 | return 0; |
1b992147 | 408 | |
64fe1095 ZJS |
409 | if (arg_dry_run) { |
410 | log_info("Would write /etc/passwd…"); | |
411 | return 0; | |
412 | } | |
413 | ||
b20b0b66 FB |
414 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
415 | if (r < 0) | |
335f6ab4 | 416 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", passwd_path); |
b20b0b66 FB |
417 | |
418 | original = fopen(passwd_path, "re"); | |
419 | if (original) { | |
b20b0b66 | 420 | |
82855aa6 ZJS |
421 | /* Allow fallback path for when /proc is not mounted. On any normal system /proc will be |
422 | * mounted, but e.g. when 'dnf --installroot' is used, it might not be. There is no security | |
423 | * relevance here, since the environment is ultimately trusted, and not requiring /proc makes | |
424 | * it easier to depend on sysusers in packaging scripts and suchlike. */ | |
425 | r = copy_rights_with_fallback(fileno(original), fileno(passwd), passwd_tmp); | |
1b992147 | 426 | if (r < 0) |
335f6ab4 ZJS |
427 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
428 | passwd_path, passwd_tmp); | |
1b992147 | 429 | |
100d5f6e | 430 | while ((r = fgetpwent_sane(original, &pw)) > 0) { |
5bc9c980 | 431 | i = ordered_hashmap_get(users, pw->pw_name); |
330d1def ZJS |
432 | if (i && i->todo_user) |
433 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
434 | "%s: User \"%s\" already exists.", | |
435 | passwd_path, pw->pw_name); | |
e3c72c21 | 436 | |
330d1def ZJS |
437 | if (ordered_hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) |
438 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
439 | "%s: Detected collision for UID " UID_FMT ".", | |
440 | passwd_path, pw->pw_uid); | |
b20b0b66 | 441 | |
563dc6f8 FB |
442 | /* Make sure we keep the NIS entries (if any) at the end. */ |
443 | if (IN_SET(pw->pw_name[0], '+', '-')) | |
444 | break; | |
445 | ||
100d5f6e FB |
446 | r = putpwent_sane(pw, passwd); |
447 | if (r < 0) | |
335f6ab4 ZJS |
448 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
449 | pw->pw_name); | |
b20b0b66 | 450 | } |
100d5f6e | 451 | if (r < 0) |
335f6ab4 | 452 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
1dd98a71 FB |
453 | |
454 | } else { | |
455 | if (errno != ENOENT) | |
335f6ab4 | 456 | return log_debug_errno(errno, "Failed to open %s: %m", passwd_path); |
1dd98a71 | 457 | if (fchmod(fileno(passwd), 0644) < 0) |
335f6ab4 | 458 | return log_debug_errno(errno, "Failed to fchmod %s: %m", passwd_tmp); |
b20b0b66 FB |
459 | } |
460 | ||
90e74a66 | 461 | ORDERED_HASHMAP_FOREACH(i, todo_uids) { |
99e9f896 LP |
462 | _cleanup_free_ char *creds_shell = NULL, *cn = NULL; |
463 | ||
b20b0b66 FB |
464 | struct passwd n = { |
465 | .pw_name = i->name, | |
466 | .pw_uid = i->uid, | |
467 | .pw_gid = i->gid, | |
d610e142 | 468 | .pw_gecos = (char*) strempty(i->description), |
1b992147 | 469 | |
b20b0b66 | 470 | /* "x" means the password is stored in the shadow file */ |
53c25ac9 | 471 | .pw_passwd = (char*) PASSWORD_SEE_SHADOW, |
a12b0cc3 | 472 | |
b20b0b66 | 473 | /* We default to the root directory as home */ |
636e72bc | 474 | .pw_dir = i->home ?: (char*) "/", |
1b992147 | 475 | |
b20b0b66 FB |
476 | /* Initialize the shell to nologin, with one exception: |
477 | * for root we patch in something special */ | |
7b1aaf66 | 478 | .pw_shell = i->shell ?: (char*) default_shell(i->uid), |
b20b0b66 | 479 | }; |
9ab315cc | 480 | |
99e9f896 LP |
481 | /* Try to pick up the shell for this account via the credentials logic */ |
482 | cn = strjoin("passwd.shell.", i->name); | |
483 | if (!cn) | |
484 | return -ENOMEM; | |
485 | ||
486 | r = read_credential(cn, (void**) &creds_shell, NULL); | |
487 | if (r < 0) | |
488 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
489 | else | |
490 | n.pw_shell = creds_shell; | |
491 | ||
100d5f6e FB |
492 | r = putpwent_sane(&n, passwd); |
493 | if (r < 0) | |
335f6ab4 ZJS |
494 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary passwd file: %m", |
495 | pw->pw_name); | |
b20b0b66 FB |
496 | } |
497 | ||
563dc6f8 FB |
498 | /* Append the remaining NIS entries if any */ |
499 | while (pw) { | |
100d5f6e FB |
500 | r = putpwent_sane(pw, passwd); |
501 | if (r < 0) | |
335f6ab4 ZJS |
502 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
503 | pw->pw_name); | |
563dc6f8 | 504 | |
100d5f6e FB |
505 | r = fgetpwent_sane(original, &pw); |
506 | if (r < 0) | |
335f6ab4 | 507 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
100d5f6e FB |
508 | if (r == 0) |
509 | break; | |
563dc6f8 | 510 | } |
563dc6f8 | 511 | |
b20b0b66 FB |
512 | r = fflush_and_check(passwd); |
513 | if (r < 0) | |
335f6ab4 | 514 | return log_debug_errno(r, "Failed to flush %s: %m", passwd_tmp); |
b20b0b66 | 515 | |
1cc6c93a YW |
516 | *tmpfile = TAKE_PTR(passwd); |
517 | *tmpfile_path = TAKE_PTR(passwd_tmp); | |
518 | ||
b20b0b66 | 519 | return 0; |
b20b0b66 FB |
520 | } |
521 | ||
522 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
523 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
1dd98a71 | 524 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
19ec7de2 | 525 | struct spwd *sp = NULL; |
b20b0b66 FB |
526 | long lstchg; |
527 | Item *i; | |
528 | int r; | |
529 | ||
98167876 | 530 | if (ordered_hashmap_isempty(todo_uids)) |
b20b0b66 FB |
531 | return 0; |
532 | ||
64fe1095 ZJS |
533 | if (arg_dry_run) { |
534 | log_info("Would write /etc/shadow…"); | |
535 | return 0; | |
536 | } | |
537 | ||
b20b0b66 FB |
538 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); |
539 | if (r < 0) | |
335f6ab4 | 540 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", shadow_path); |
9ab315cc | 541 | |
b20b0b66 FB |
542 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); |
543 | ||
544 | original = fopen(shadow_path, "re"); | |
545 | if (original) { | |
b20b0b66 | 546 | |
82855aa6 | 547 | r = copy_rights_with_fallback(fileno(original), fileno(shadow), shadow_tmp); |
9ab315cc | 548 | if (r < 0) |
335f6ab4 ZJS |
549 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
550 | shadow_path, shadow_tmp); | |
9ab315cc | 551 | |
100d5f6e | 552 | while ((r = fgetspent_sane(original, &sp)) > 0) { |
5bc9c980 | 553 | i = ordered_hashmap_get(users, sp->sp_namp); |
b20b0b66 FB |
554 | if (i && i->todo_user) { |
555 | /* we will update the existing entry */ | |
556 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 557 | |
b20b0b66 FB |
558 | /* only the /etc/shadow stage is left, so we can |
559 | * safely remove the item from the todo set */ | |
560 | i->todo_user = false; | |
5bc9c980 | 561 | ordered_hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); |
9ab315cc | 562 | } |
b20b0b66 | 563 | |
19ec7de2 FB |
564 | /* Make sure we keep the NIS entries (if any) at the end. */ |
565 | if (IN_SET(sp->sp_namp[0], '+', '-')) | |
566 | break; | |
567 | ||
100d5f6e FB |
568 | r = putspent_sane(sp, shadow); |
569 | if (r < 0) | |
335f6ab4 ZJS |
570 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
571 | sp->sp_namp); | |
572 | ||
b20b0b66 | 573 | } |
100d5f6e | 574 | if (r < 0) |
335f6ab4 | 575 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
1dd98a71 FB |
576 | |
577 | } else { | |
578 | if (errno != ENOENT) | |
335f6ab4 | 579 | return log_debug_errno(errno, "Failed to open %s: %m", shadow_path); |
1dd98a71 | 580 | if (fchmod(fileno(shadow), 0000) < 0) |
335f6ab4 | 581 | return log_debug_errno(errno, "Failed to fchmod %s: %m", shadow_tmp); |
b20b0b66 | 582 | } |
9ab315cc | 583 | |
90e74a66 | 584 | ORDERED_HASHMAP_FOREACH(i, todo_uids) { |
99e9f896 LP |
585 | _cleanup_(erase_and_freep) char *creds_password = NULL; |
586 | _cleanup_free_ char *cn = NULL; | |
587 | ||
b20b0b66 FB |
588 | struct spwd n = { |
589 | .sp_namp = i->name, | |
53c25ac9 | 590 | .sp_pwdp = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 FB |
591 | .sp_lstchg = lstchg, |
592 | .sp_min = -1, | |
593 | .sp_max = -1, | |
594 | .sp_warn = -1, | |
595 | .sp_inact = -1, | |
12c82937 | 596 | .sp_expire = -1, |
f5fbe71d | 597 | .sp_flag = ULONG_MAX, /* this appears to be what everybody does ... */ |
b20b0b66 | 598 | }; |
9ab315cc | 599 | |
99e9f896 LP |
600 | /* Try to pick up the password for this account via the credentials logic */ |
601 | cn = strjoin("passwd.hashed-password.", i->name); | |
602 | if (!cn) | |
603 | return -ENOMEM; | |
604 | ||
605 | r = read_credential(cn, (void**) &creds_password, NULL); | |
606 | if (r == -ENOENT) { | |
607 | _cleanup_(erase_and_freep) char *plaintext_password = NULL; | |
608 | ||
609 | free(cn); | |
610 | cn = strjoin("passwd.plaintext-password.", i->name); | |
611 | if (!cn) | |
612 | return -ENOMEM; | |
613 | ||
614 | r = read_credential(cn, (void**) &plaintext_password, NULL); | |
615 | if (r < 0) | |
616 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
617 | else { | |
618 | r = hash_password(plaintext_password, &creds_password); | |
619 | if (r < 0) | |
620 | return log_debug_errno(r, "Failed to hash password: %m"); | |
621 | } | |
622 | } else if (r < 0) | |
623 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
624 | ||
625 | if (creds_password) | |
626 | n.sp_pwdp = creds_password; | |
627 | ||
100d5f6e FB |
628 | r = putspent_sane(&n, shadow); |
629 | if (r < 0) | |
335f6ab4 ZJS |
630 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary shadow file: %m", |
631 | sp->sp_namp); | |
1b992147 | 632 | } |
19ec7de2 FB |
633 | |
634 | /* Append the remaining NIS entries if any */ | |
635 | while (sp) { | |
100d5f6e FB |
636 | r = putspent_sane(sp, shadow); |
637 | if (r < 0) | |
335f6ab4 ZJS |
638 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
639 | sp->sp_namp); | |
19ec7de2 | 640 | |
100d5f6e FB |
641 | r = fgetspent_sane(original, &sp); |
642 | if (r < 0) | |
335f6ab4 | 643 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
100d5f6e FB |
644 | if (r == 0) |
645 | break; | |
19ec7de2 FB |
646 | } |
647 | if (!IN_SET(errno, 0, ENOENT)) | |
648 | return -errno; | |
1b992147 | 649 | |
0675e94a | 650 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 651 | if (r < 0) |
335f6ab4 | 652 | return log_debug_errno(r, "Failed to flush %s: %m", shadow_tmp); |
b20b0b66 | 653 | |
1cc6c93a YW |
654 | *tmpfile = TAKE_PTR(shadow); |
655 | *tmpfile_path = TAKE_PTR(shadow_tmp); | |
656 | ||
b20b0b66 | 657 | return 0; |
b20b0b66 | 658 | } |
1b992147 | 659 | |
b20b0b66 FB |
660 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { |
661 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
1dd98a71 | 662 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 | 663 | bool group_changed = false; |
563dc6f8 | 664 | struct group *gr = NULL; |
b20b0b66 FB |
665 | Item *i; |
666 | int r; | |
1b992147 | 667 | |
98167876 | 668 | if (ordered_hashmap_isempty(todo_gids) && ordered_hashmap_isempty(members)) |
b20b0b66 | 669 | return 0; |
e3c72c21 | 670 | |
64fe1095 ZJS |
671 | if (arg_dry_run) { |
672 | log_info("Would write /etc/group…"); | |
673 | return 0; | |
674 | } | |
675 | ||
b20b0b66 FB |
676 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
677 | if (r < 0) | |
335f6ab4 | 678 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", group_path); |
b20b0b66 FB |
679 | |
680 | original = fopen(group_path, "re"); | |
681 | if (original) { | |
b20b0b66 | 682 | |
82855aa6 | 683 | r = copy_rights_with_fallback(fileno(original), fileno(group), group_tmp); |
b20b0b66 | 684 | if (r < 0) |
335f6ab4 ZJS |
685 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
686 | group_path, group_tmp); | |
b20b0b66 | 687 | |
100d5f6e | 688 | while ((r = fgetgrent_sane(original, &gr)) > 0) { |
b20b0b66 FB |
689 | /* Safety checks against name and GID collisions. Normally, |
690 | * this should be unnecessary, but given that we look at the | |
691 | * entries anyway here, let's make an extra verification | |
692 | * step that we don't generate duplicate entries. */ | |
693 | ||
5bc9c980 | 694 | i = ordered_hashmap_get(groups, gr->gr_name); |
330d1def ZJS |
695 | if (i && i->todo_group) |
696 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
697 | "%s: Group \"%s\" already exists.", | |
698 | group_path, gr->gr_name); | |
b20b0b66 | 699 | |
330d1def ZJS |
700 | if (ordered_hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) |
701 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
702 | "%s: Detected collision for GID " GID_FMT ".", | |
703 | group_path, gr->gr_gid); | |
1b992147 | 704 | |
563dc6f8 FB |
705 | /* Make sure we keep the NIS entries (if any) at the end. */ |
706 | if (IN_SET(gr->gr_name[0], '+', '-')) | |
707 | break; | |
708 | ||
b20b0b66 FB |
709 | r = putgrent_with_members(gr, group); |
710 | if (r < 0) | |
335f6ab4 ZJS |
711 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
712 | gr->gr_name); | |
b20b0b66 FB |
713 | if (r > 0) |
714 | group_changed = true; | |
b20b0b66 | 715 | } |
100d5f6e | 716 | if (r < 0) |
335f6ab4 | 717 | return log_debug_errno(r, "Failed to read %s: %m", group_path); |
1dd98a71 FB |
718 | |
719 | } else { | |
720 | if (errno != ENOENT) | |
335f6ab4 | 721 | return log_debug_errno(errno, "Failed to open %s: %m", group_path); |
1dd98a71 | 722 | if (fchmod(fileno(group), 0644) < 0) |
335f6ab4 | 723 | return log_debug_errno(errno, "Failed to fchmod %s: %m", group_tmp); |
b20b0b66 | 724 | } |
7629889c | 725 | |
90e74a66 | 726 | ORDERED_HASHMAP_FOREACH(i, todo_gids) { |
b20b0b66 FB |
727 | struct group n = { |
728 | .gr_name = i->name, | |
729 | .gr_gid = i->gid, | |
53c25ac9 | 730 | .gr_passwd = (char*) PASSWORD_SEE_SHADOW, |
b20b0b66 | 731 | }; |
1b992147 | 732 | |
b20b0b66 FB |
733 | r = putgrent_with_members(&n, group); |
734 | if (r < 0) | |
335f6ab4 ZJS |
735 | return log_debug_errno(r, "Failed to add new group \"%s\" to temporary group file: %m", |
736 | gr->gr_name); | |
7629889c | 737 | |
b20b0b66 FB |
738 | group_changed = true; |
739 | } | |
1b992147 | 740 | |
563dc6f8 FB |
741 | /* Append the remaining NIS entries if any */ |
742 | while (gr) { | |
100d5f6e FB |
743 | r = putgrent_sane(gr, group); |
744 | if (r < 0) | |
335f6ab4 ZJS |
745 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
746 | gr->gr_name); | |
563dc6f8 | 747 | |
100d5f6e FB |
748 | r = fgetgrent_sane(original, &gr); |
749 | if (r < 0) | |
335f6ab4 | 750 | return log_debug_errno(r, "Failed to read %s: %m", group_path); |
100d5f6e FB |
751 | if (r == 0) |
752 | break; | |
563dc6f8 | 753 | } |
563dc6f8 | 754 | |
0675e94a | 755 | r = fflush_sync_and_check(group); |
b20b0b66 | 756 | if (r < 0) |
335f6ab4 | 757 | return log_debug_errno(r, "Failed to flush %s: %m", group_tmp); |
1b992147 | 758 | |
b20b0b66 | 759 | if (group_changed) { |
1cc6c93a YW |
760 | *tmpfile = TAKE_PTR(group); |
761 | *tmpfile_path = TAKE_PTR(group_tmp); | |
b20b0b66 FB |
762 | } |
763 | return 0; | |
b20b0b66 FB |
764 | } |
765 | ||
766 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
349cc4a5 | 767 | #if ENABLE_GSHADOW |
b20b0b66 | 768 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 769 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 | 770 | bool group_changed = false; |
b20b0b66 FB |
771 | Item *i; |
772 | int r; | |
773 | ||
98167876 | 774 | if (ordered_hashmap_isempty(todo_gids) && ordered_hashmap_isempty(members)) |
b20b0b66 FB |
775 | return 0; |
776 | ||
64fe1095 ZJS |
777 | if (arg_dry_run) { |
778 | log_info("Would write /etc/gshadow…"); | |
779 | return 0; | |
780 | } | |
781 | ||
b20b0b66 FB |
782 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); |
783 | if (r < 0) | |
335f6ab4 | 784 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", gshadow_path); |
9ab315cc | 785 | |
b20b0b66 FB |
786 | original = fopen(gshadow_path, "re"); |
787 | if (original) { | |
788 | struct sgrp *sg; | |
789 | ||
82855aa6 | 790 | r = copy_rights_with_fallback(fileno(original), fileno(gshadow), gshadow_tmp); |
1b992147 | 791 | if (r < 0) |
335f6ab4 ZJS |
792 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
793 | gshadow_path, gshadow_tmp); | |
9ab315cc | 794 | |
100d5f6e | 795 | while ((r = fgetsgent_sane(original, &sg)) > 0) { |
c5abf225 | 796 | |
5bc9c980 | 797 | i = ordered_hashmap_get(groups, sg->sg_namp); |
330d1def ZJS |
798 | if (i && i->todo_group) |
799 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
800 | "%s: Group \"%s\" already exists.", | |
801 | gshadow_path, sg->sg_namp); | |
9ab315cc | 802 | |
b20b0b66 | 803 | r = putsgent_with_members(sg, gshadow); |
fff19499 | 804 | if (r < 0) |
335f6ab4 ZJS |
805 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary gshadow file: %m", |
806 | sg->sg_namp); | |
b20b0b66 FB |
807 | if (r > 0) |
808 | group_changed = true; | |
b20b0b66 | 809 | } |
100d5f6e FB |
810 | if (r < 0) |
811 | return r; | |
1dd98a71 FB |
812 | |
813 | } else { | |
814 | if (errno != ENOENT) | |
335f6ab4 | 815 | return log_debug_errno(errno, "Failed to open %s: %m", gshadow_path); |
1dd98a71 | 816 | if (fchmod(fileno(gshadow), 0000) < 0) |
335f6ab4 | 817 | return log_debug_errno(errno, "Failed to fchmod %s: %m", gshadow_tmp); |
b20b0b66 | 818 | } |
9ab315cc | 819 | |
90e74a66 | 820 | ORDERED_HASHMAP_FOREACH(i, todo_gids) { |
b20b0b66 FB |
821 | struct sgrp n = { |
822 | .sg_namp = i->name, | |
53c25ac9 | 823 | .sg_passwd = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 | 824 | }; |
9ab315cc | 825 | |
b20b0b66 | 826 | r = putsgent_with_members(&n, gshadow); |
9ab315cc | 827 | if (r < 0) |
335f6ab4 ZJS |
828 | return log_debug_errno(r, "Failed to add new group \"%s\" to temporary gshadow file: %m", |
829 | n.sg_namp); | |
b20b0b66 FB |
830 | |
831 | group_changed = true; | |
9ab315cc LP |
832 | } |
833 | ||
0675e94a | 834 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 835 | if (r < 0) |
335f6ab4 | 836 | return log_debug_errno(r, "Failed to flush %s: %m", gshadow_tmp); |
b20b0b66 | 837 | |
9ab315cc | 838 | if (group_changed) { |
1cc6c93a YW |
839 | *tmpfile = TAKE_PTR(gshadow); |
840 | *tmpfile_path = TAKE_PTR(gshadow_tmp); | |
b20b0b66 | 841 | } |
b14e1b43 | 842 | #endif |
62d1c93a | 843 | return 0; |
b20b0b66 FB |
844 | } |
845 | ||
846 | static int write_files(void) { | |
b20b0b66 | 847 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 848 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
62d1c93a | 849 | const char *passwd_path, *shadow_path, *group_path, *gshadow_path; |
b20b0b66 FB |
850 | int r; |
851 | ||
852 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
853 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
854 | group_path = prefix_roota(arg_root, "/etc/group"); | |
855 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
856 | ||
857 | r = write_temporary_group(group_path, &group, &group_tmp); | |
858 | if (r < 0) | |
1dd98a71 | 859 | return r; |
b20b0b66 FB |
860 | |
861 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
862 | if (r < 0) | |
1dd98a71 | 863 | return r; |
b20b0b66 FB |
864 | |
865 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
866 | if (r < 0) | |
1dd98a71 | 867 | return r; |
b20b0b66 FB |
868 | |
869 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
870 | if (r < 0) | |
1dd98a71 | 871 | return r; |
b20b0b66 FB |
872 | |
873 | /* Make a backup of the old files */ | |
874 | if (group) { | |
875 | r = make_backup("/etc/group", group_path); | |
876 | if (r < 0) | |
335f6ab4 | 877 | return log_debug_errno(r, "Failed to make backup %s: %m", group_path); |
b20b0b66 FB |
878 | } |
879 | if (gshadow) { | |
880 | r = make_backup("/etc/gshadow", gshadow_path); | |
881 | if (r < 0) | |
335f6ab4 | 882 | return log_debug_errno(r, "Failed to make backup %s: %m", gshadow_path); |
1b992147 LP |
883 | } |
884 | ||
885 | if (passwd) { | |
9f1c1940 | 886 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 887 | if (r < 0) |
335f6ab4 | 888 | return log_debug_errno(r, "Failed to make backup %s: %m", passwd_path); |
1b992147 | 889 | } |
9ab315cc LP |
890 | if (shadow) { |
891 | r = make_backup("/etc/shadow", shadow_path); | |
892 | if (r < 0) | |
335f6ab4 | 893 | return log_debug_errno(r, "Failed to make backup %s: %m", shadow_path); |
9ab315cc | 894 | } |
1b992147 LP |
895 | |
896 | /* And make the new files count */ | |
b20b0b66 | 897 | if (group) { |
2da3dc69 | 898 | r = rename_and_apply_smack_floor_label(group_tmp, group_path); |
b20b0b66 | 899 | if (r < 0) |
335f6ab4 ZJS |
900 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
901 | group_tmp, group_path); | |
b20b0b66 | 902 | group_tmp = mfree(group_tmp); |
d481b830 FB |
903 | |
904 | if (!arg_root && !arg_image) | |
905 | (void) nscd_flush_cache(STRV_MAKE("group")); | |
b20b0b66 FB |
906 | } |
907 | if (gshadow) { | |
2da3dc69 | 908 | r = rename_and_apply_smack_floor_label(gshadow_tmp, gshadow_path); |
b20b0b66 | 909 | if (r < 0) |
335f6ab4 ZJS |
910 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
911 | gshadow_tmp, gshadow_path); | |
1b992147 | 912 | |
b20b0b66 | 913 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
914 | } |
915 | ||
916 | if (passwd) { | |
2da3dc69 | 917 | r = rename_and_apply_smack_floor_label(passwd_tmp, passwd_path); |
c02e7b1e | 918 | if (r < 0) |
335f6ab4 ZJS |
919 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
920 | passwd_tmp, passwd_path); | |
1b992147 | 921 | |
97b11eed | 922 | passwd_tmp = mfree(passwd_tmp); |
d481b830 FB |
923 | |
924 | if (!arg_root && !arg_image) | |
925 | (void) nscd_flush_cache(STRV_MAKE("passwd")); | |
1b992147 | 926 | } |
9ab315cc | 927 | if (shadow) { |
2da3dc69 | 928 | r = rename_and_apply_smack_floor_label(shadow_tmp, shadow_path); |
c02e7b1e | 929 | if (r < 0) |
335f6ab4 ZJS |
930 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
931 | shadow_tmp, shadow_path); | |
9ab315cc | 932 | |
97b11eed | 933 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 934 | } |
1b992147 | 935 | |
1dd98a71 | 936 | return 0; |
1b992147 LP |
937 | } |
938 | ||
b9ee05c2 | 939 | static int uid_is_ok(uid_t uid, const char *name, bool check_with_gid) { |
1b992147 LP |
940 | |
941 | /* Let's see if we already have assigned the UID a second time */ | |
5bc9c980 | 942 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(uid))) |
1b992147 LP |
943 | return 0; |
944 | ||
945 | /* Try to avoid using uids that are already used by a group | |
946 | * that doesn't have the same name as our new user. */ | |
b9ee05c2 | 947 | if (check_with_gid) { |
62d1c93a ZJS |
948 | Item *i; |
949 | ||
b9ee05c2 MV |
950 | i = ordered_hashmap_get(todo_gids, GID_TO_PTR(uid)); |
951 | if (i && !streq(i->name, name)) | |
952 | return 0; | |
953 | } | |
1b992147 LP |
954 | |
955 | /* Let's check the files directly */ | |
71da1673 | 956 | if (hashmap_contains(database_by_uid, UID_TO_PTR(uid))) |
1b992147 LP |
957 | return 0; |
958 | ||
b9ee05c2 | 959 | if (check_with_gid) { |
62d1c93a ZJS |
960 | const char *n; |
961 | ||
71da1673 | 962 | n = hashmap_get(database_by_gid, GID_TO_PTR(uid)); |
b9ee05c2 MV |
963 | if (n && !streq(n, name)) |
964 | return 0; | |
965 | } | |
1b992147 LP |
966 | |
967 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
968 | if (!arg_root) { | |
62d1c93a ZJS |
969 | struct passwd *p; |
970 | struct group *g; | |
971 | ||
1b992147 LP |
972 | errno = 0; |
973 | p = getpwuid(uid); | |
974 | if (p) | |
975 | return 0; | |
b0284aba | 976 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
977 | return -errno; |
978 | ||
b9ee05c2 MV |
979 | if (check_with_gid) { |
980 | errno = 0; | |
981 | g = getgrgid((gid_t) uid); | |
982 | if (g) { | |
983 | if (!streq(g->gr_name, name)) | |
984 | return 0; | |
985 | } else if (!IN_SET(errno, 0, ENOENT)) | |
986 | return -errno; | |
987 | } | |
1b992147 LP |
988 | } |
989 | ||
990 | return 1; | |
991 | } | |
992 | ||
993 | static int root_stat(const char *p, struct stat *st) { | |
994 | const char *fix; | |
995 | ||
1d13f648 | 996 | fix = prefix_roota(arg_root, p); |
7c248223 | 997 | return RET_NERRNO(stat(fix, st)); |
1b992147 LP |
998 | } |
999 | ||
1000 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
1001 | struct stat st; | |
1002 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
1003 | uid_t uid = 0; |
1004 | gid_t gid = 0; | |
1b992147 LP |
1005 | |
1006 | assert(i); | |
1007 | ||
3f316701 | 1008 | /* First, try to get the GID directly */ |
1b992147 LP |
1009 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { |
1010 | gid = st.st_gid; | |
1011 | found_gid = true; | |
1012 | } | |
1013 | ||
3f316701 | 1014 | /* Then, try to get the UID directly */ |
1b992147 LP |
1015 | if ((_uid || (_gid && !found_gid)) |
1016 | && i->uid_path | |
1017 | && root_stat(i->uid_path, &st) >= 0) { | |
1018 | ||
1019 | uid = st.st_uid; | |
1020 | found_uid = true; | |
1021 | ||
3f316701 | 1022 | /* If we need the gid, but had no success yet, also derive it from the UID path */ |
1b992147 LP |
1023 | if (_gid && !found_gid) { |
1024 | gid = st.st_gid; | |
1025 | found_gid = true; | |
1026 | } | |
1027 | } | |
1028 | ||
3f316701 | 1029 | /* If that didn't work yet, then let's reuse the GID as UID */ |
1b992147 LP |
1030 | if (_uid && !found_uid && i->gid_path) { |
1031 | ||
1032 | if (found_gid) { | |
1033 | uid = (uid_t) gid; | |
1034 | found_uid = true; | |
1035 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
1036 | uid = (uid_t) st.st_gid; | |
1037 | found_uid = true; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | if (_uid) { | |
1042 | if (!found_uid) | |
1043 | return 0; | |
1044 | ||
1045 | *_uid = uid; | |
1046 | } | |
1047 | ||
1048 | if (_gid) { | |
1049 | if (!found_gid) | |
1050 | return 0; | |
1051 | ||
1052 | *_gid = gid; | |
1053 | } | |
1054 | ||
1055 | return 1; | |
1056 | } | |
1057 | ||
1058 | static int add_user(Item *i) { | |
1059 | void *z; | |
1060 | int r; | |
1061 | ||
1062 | assert(i); | |
1063 | ||
1064 | /* Check the database directly */ | |
71da1673 | 1065 | z = hashmap_get(database_by_username, i->name); |
1b992147 LP |
1066 | if (z) { |
1067 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 1068 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
1069 | i->uid_set = true; |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | if (!arg_root) { | |
1074 | struct passwd *p; | |
1b992147 LP |
1075 | |
1076 | /* Also check NSS */ | |
1077 | errno = 0; | |
1078 | p = getpwnam(i->name); | |
1079 | if (p) { | |
1080 | log_debug("User %s already exists.", i->name); | |
1081 | i->uid = p->pw_uid; | |
1082 | i->uid_set = true; | |
1083 | ||
2fc09a9c DM |
1084 | r = free_and_strdup(&i->description, p->pw_gecos); |
1085 | if (r < 0) | |
1086 | return log_oom(); | |
1087 | ||
1b992147 LP |
1088 | return 0; |
1089 | } | |
08c7c321 | 1090 | if (!errno_is_not_exists(errno)) |
4a62c710 | 1091 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); |
1b992147 LP |
1092 | } |
1093 | ||
3f316701 | 1094 | /* Try to use the suggested numeric UID */ |
1b992147 | 1095 | if (i->uid_set) { |
b9ee05c2 | 1096 | r = uid_is_ok(i->uid, i->name, !i->id_set_strict); |
f647962d | 1097 | if (r < 0) |
3f316701 | 1098 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
1b992147 | 1099 | if (r == 0) { |
5374bc7c | 1100 | log_info("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); |
1b992147 LP |
1101 | i->uid_set = false; |
1102 | } | |
1103 | } | |
1104 | ||
1105 | /* If that didn't work, try to read it from the specified path */ | |
1106 | if (!i->uid_set) { | |
1107 | uid_t c; | |
1108 | ||
1109 | if (read_id_from_file(i, &c, NULL) > 0) { | |
1110 | ||
8530dc44 | 1111 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1112 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); |
1113 | else { | |
b9ee05c2 | 1114 | r = uid_is_ok(c, i->name, true); |
f647962d | 1115 | if (r < 0) |
3f316701 | 1116 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
f647962d | 1117 | else if (r > 0) { |
1b992147 LP |
1118 | i->uid = c; |
1119 | i->uid_set = true; | |
1120 | } else | |
1121 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
1122 | } | |
1123 | } | |
1124 | } | |
1125 | ||
b938cb90 | 1126 | /* Otherwise, try to reuse the group ID */ |
1b992147 | 1127 | if (!i->uid_set && i->gid_set) { |
b9ee05c2 | 1128 | r = uid_is_ok((uid_t) i->gid, i->name, true); |
f647962d | 1129 | if (r < 0) |
3f316701 | 1130 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
1b992147 LP |
1131 | if (r > 0) { |
1132 | i->uid = (uid_t) i->gid; | |
1133 | i->uid_set = true; | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | /* And if that didn't work either, let's try to find a free one */ | |
1138 | if (!i->uid_set) { | |
4b6f9b20 ZJS |
1139 | maybe_emit_login_defs_warning(); |
1140 | ||
8530dc44 LP |
1141 | for (;;) { |
1142 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
330d1def ZJS |
1143 | if (r < 0) |
1144 | return log_error_errno(r, "No free user ID available for %s.", i->name); | |
1b992147 | 1145 | |
b9ee05c2 | 1146 | r = uid_is_ok(search_uid, i->name, true); |
f647962d | 1147 | if (r < 0) |
3f316701 | 1148 | return log_error_errno(r, "Failed to verify UID " UID_FMT ": %m", i->uid); |
f647962d | 1149 | else if (r > 0) |
1b992147 LP |
1150 | break; |
1151 | } | |
1152 | ||
1b992147 LP |
1153 | i->uid_set = true; |
1154 | i->uid = search_uid; | |
1b992147 LP |
1155 | } |
1156 | ||
1dfb9321 SS |
1157 | r = ordered_hashmap_ensure_put(&todo_uids, NULL, UID_TO_PTR(i->uid), i); |
1158 | if (r == -EEXIST) | |
3f316701 | 1159 | return log_error_errno(r, "Requested user %s with UID " UID_FMT " and gid" GID_FMT " to be created is duplicated " |
1dfb9321 SS |
1160 | "or conflicts with another user.", i->name, i->uid, i->gid); |
1161 | if (r == -ENOMEM) | |
1b992147 | 1162 | return log_oom(); |
1b992147 | 1163 | if (r < 0) |
3f316701 | 1164 | return log_error_errno(r, "Failed to store user %s with UID " UID_FMT " and GID " GID_FMT " to be created: %m", |
1dfb9321 | 1165 | i->name, i->uid, i->gid); |
1b992147 | 1166 | |
c1b6b04f | 1167 | i->todo_user = true; |
9a5af4b7 | 1168 | log_info("Creating user '%s' (%s) with UID " UID_FMT " and GID " GID_FMT ".", |
62d1c93a | 1169 | i->name, strna(i->description), i->uid, i->gid); |
1b992147 LP |
1170 | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | static int gid_is_ok(gid_t gid) { | |
1175 | struct group *g; | |
1176 | struct passwd *p; | |
1177 | ||
5bc9c980 | 1178 | if (ordered_hashmap_get(todo_gids, GID_TO_PTR(gid))) |
1b992147 LP |
1179 | return 0; |
1180 | ||
1181 | /* Avoid reusing gids that are already used by a different user */ | |
5bc9c980 | 1182 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(gid))) |
1b992147 LP |
1183 | return 0; |
1184 | ||
71da1673 | 1185 | if (hashmap_contains(database_by_gid, GID_TO_PTR(gid))) |
1b992147 LP |
1186 | return 0; |
1187 | ||
71da1673 | 1188 | if (hashmap_contains(database_by_uid, UID_TO_PTR(gid))) |
1b992147 LP |
1189 | return 0; |
1190 | ||
1191 | if (!arg_root) { | |
1192 | errno = 0; | |
1193 | g = getgrgid(gid); | |
1194 | if (g) | |
1195 | return 0; | |
b0284aba | 1196 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1197 | return -errno; |
1198 | ||
1199 | errno = 0; | |
1200 | p = getpwuid((uid_t) gid); | |
1201 | if (p) | |
1202 | return 0; | |
b0284aba | 1203 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1204 | return -errno; |
1205 | } | |
1206 | ||
1207 | return 1; | |
1208 | } | |
1209 | ||
649916d3 | 1210 | static int get_gid_by_name(const char *name, gid_t *gid) { |
1b992147 | 1211 | void *z; |
1b992147 | 1212 | |
649916d3 | 1213 | assert(gid); |
1b992147 LP |
1214 | |
1215 | /* Check the database directly */ | |
649916d3 | 1216 | z = hashmap_get(database_by_groupname, name); |
1b992147 | 1217 | if (z) { |
649916d3 | 1218 | *gid = PTR_TO_GID(z); |
1b992147 LP |
1219 | return 0; |
1220 | } | |
1221 | ||
1222 | /* Also check NSS */ | |
1223 | if (!arg_root) { | |
1224 | struct group *g; | |
1225 | ||
1226 | errno = 0; | |
649916d3 | 1227 | g = getgrnam(name); |
1b992147 | 1228 | if (g) { |
649916d3 | 1229 | *gid = g->gr_gid; |
1b992147 LP |
1230 | return 0; |
1231 | } | |
08c7c321 | 1232 | if (!errno_is_not_exists(errno)) |
649916d3 DM |
1233 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", name); |
1234 | } | |
1235 | ||
1236 | return -ENOENT; | |
1237 | } | |
1238 | ||
1239 | static int add_group(Item *i) { | |
1240 | int r; | |
1241 | ||
1242 | assert(i); | |
1243 | ||
1244 | r = get_gid_by_name(i->name, &i->gid); | |
1245 | if (r != -ENOENT) { | |
1246 | if (r < 0) | |
1247 | return r; | |
1248 | log_debug("Group %s already exists.", i->name); | |
1249 | i->gid_set = true; | |
1250 | return 0; | |
1b992147 LP |
1251 | } |
1252 | ||
3f316701 | 1253 | /* Try to use the suggested numeric GID */ |
1b992147 LP |
1254 | if (i->gid_set) { |
1255 | r = gid_is_ok(i->gid); | |
f647962d | 1256 | if (r < 0) |
3f316701 | 1257 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
b9ee05c2 | 1258 | if (i->id_set_strict) { |
3f316701 ZJS |
1259 | /* If we require the GID to already exist we can return here: |
1260 | * r > 0: means the GID does not exist -> fail | |
1261 | * r == 0: means the GID exists -> nothing more to do. | |
28e7fad7 | 1262 | */ |
baaa35ad ZJS |
1263 | if (r > 0) |
1264 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1265 | "Failed to create %s: please create GID %d", | |
1266 | i->name, i->gid); | |
28e7fad7 MV |
1267 | if (r == 0) |
1268 | return 0; | |
1269 | } | |
1b992147 | 1270 | if (r == 0) { |
5374bc7c | 1271 | log_info("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); |
1b992147 LP |
1272 | i->gid_set = false; |
1273 | } | |
1274 | } | |
1275 | ||
1276 | /* Try to reuse the numeric uid, if there's one */ | |
1277 | if (!i->gid_set && i->uid_set) { | |
1278 | r = gid_is_ok((gid_t) i->uid); | |
f647962d | 1279 | if (r < 0) |
3f316701 | 1280 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
1b992147 LP |
1281 | if (r > 0) { |
1282 | i->gid = (gid_t) i->uid; | |
1283 | i->gid_set = true; | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | /* If that didn't work, try to read it from the specified path */ | |
1288 | if (!i->gid_set) { | |
1289 | gid_t c; | |
1290 | ||
1291 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1292 | ||
8530dc44 | 1293 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1294 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); |
1295 | else { | |
1296 | r = gid_is_ok(c); | |
f647962d | 1297 | if (r < 0) |
3f316701 | 1298 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
f647962d | 1299 | else if (r > 0) { |
1b992147 LP |
1300 | i->gid = c; |
1301 | i->gid_set = true; | |
1302 | } else | |
1303 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* And if that didn't work either, let's try to find a free one */ | |
1309 | if (!i->gid_set) { | |
4b6f9b20 ZJS |
1310 | maybe_emit_login_defs_warning(); |
1311 | ||
8530dc44 LP |
1312 | for (;;) { |
1313 | /* We look for new GIDs in the UID pool! */ | |
1314 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
330d1def ZJS |
1315 | if (r < 0) |
1316 | return log_error_errno(r, "No free group ID available for %s.", i->name); | |
8530dc44 LP |
1317 | |
1318 | r = gid_is_ok(search_uid); | |
f647962d | 1319 | if (r < 0) |
3f316701 | 1320 | return log_error_errno(r, "Failed to verify GID " GID_FMT ": %m", i->gid); |
f647962d | 1321 | else if (r > 0) |
1b992147 LP |
1322 | break; |
1323 | } | |
1324 | ||
1b992147 | 1325 | i->gid_set = true; |
8530dc44 | 1326 | i->gid = search_uid; |
1b992147 LP |
1327 | } |
1328 | ||
1dfb9321 SS |
1329 | r = ordered_hashmap_ensure_put(&todo_gids, NULL, GID_TO_PTR(i->gid), i); |
1330 | if (r == -EEXIST) | |
3f316701 | 1331 | return log_error_errno(r, "Requested group %s with GID "GID_FMT " to be created is duplicated or conflicts with another user.", i->name, i->gid); |
1dfb9321 | 1332 | if (r == -ENOMEM) |
1b992147 | 1333 | return log_oom(); |
1b992147 | 1334 | if (r < 0) |
3f316701 | 1335 | return log_error_errno(r, "Failed to store group %s with GID " GID_FMT " to be created: %m", i->name, i->gid); |
1b992147 | 1336 | |
c1b6b04f | 1337 | i->todo_group = true; |
9a5af4b7 | 1338 | log_info("Creating group '%s' with GID " GID_FMT ".", i->name, i->gid); |
1b992147 LP |
1339 | |
1340 | return 0; | |
1341 | } | |
1342 | ||
1343 | static int process_item(Item *i) { | |
1344 | int r; | |
1345 | ||
1346 | assert(i); | |
1347 | ||
1348 | switch (i->type) { | |
1349 | ||
b5327d0a YW |
1350 | case ADD_USER: { |
1351 | Item *j; | |
1352 | ||
649916d3 | 1353 | j = ordered_hashmap_get(groups, i->group_name ?: i->name); |
b5327d0a | 1354 | if (j && j->todo_group) { |
649916d3 | 1355 | /* When a group with the target name is already in queue, |
b5327d0a YW |
1356 | * use the information about the group and do not create |
1357 | * duplicated group entry. */ | |
1358 | i->gid_set = j->gid_set; | |
1359 | i->gid = j->gid; | |
1360 | i->id_set_strict = true; | |
649916d3 DM |
1361 | } else if (i->group_name) { |
1362 | /* When a group name was given instead of a GID and it's | |
1363 | * not in queue, then it must already exist. */ | |
1364 | r = get_gid_by_name(i->group_name, &i->gid); | |
1365 | if (r < 0) | |
1366 | return log_error_errno(r, "Group %s not found.", i->group_name); | |
1367 | i->gid_set = true; | |
1368 | i->id_set_strict = true; | |
b5327d0a YW |
1369 | } else { |
1370 | r = add_group(i); | |
1371 | if (r < 0) | |
1372 | return r; | |
1373 | } | |
1b992147 LP |
1374 | |
1375 | return add_user(i); | |
b5327d0a | 1376 | } |
1b992147 | 1377 | |
e2c2060f | 1378 | case ADD_GROUP: |
1b992147 | 1379 | return add_group(i); |
1b992147 | 1380 | |
a12b0cc3 | 1381 | default: |
04499a70 | 1382 | assert_not_reached(); |
a12b0cc3 | 1383 | } |
1b992147 LP |
1384 | } |
1385 | ||
71da1673 | 1386 | static Item* item_free(Item *i) { |
1b992147 | 1387 | if (!i) |
71da1673 | 1388 | return NULL; |
1b992147 LP |
1389 | |
1390 | free(i->name); | |
649916d3 | 1391 | free(i->group_name); |
1b992147 LP |
1392 | free(i->uid_path); |
1393 | free(i->gid_path); | |
1394 | free(i->description); | |
d9b8ea54 | 1395 | free(i->home); |
7b1aaf66 | 1396 | free(i->shell); |
71da1673 | 1397 | return mfree(i); |
1b992147 LP |
1398 | } |
1399 | ||
1400 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
71da1673 | 1401 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_hash_ops, char, string_hash_func, string_compare_func, Item, item_free); |
1b992147 | 1402 | |
a12b0cc3 LP |
1403 | static int add_implicit(void) { |
1404 | char *g, **l; | |
a12b0cc3 LP |
1405 | int r; |
1406 | ||
1407 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
90e74a66 | 1408 | ORDERED_HASHMAP_FOREACH_KEY(l, g, members) { |
a12b0cc3 LP |
1409 | char **m; |
1410 | ||
d4f0412d YW |
1411 | STRV_FOREACH(m, l) |
1412 | if (!ordered_hashmap_get(users, *m)) { | |
a12b0cc3 LP |
1413 | _cleanup_(item_freep) Item *j = NULL; |
1414 | ||
a12b0cc3 LP |
1415 | j = new0(Item, 1); |
1416 | if (!j) | |
1417 | return log_oom(); | |
1418 | ||
1419 | j->type = ADD_USER; | |
1420 | j->name = strdup(*m); | |
1421 | if (!j->name) | |
1422 | return log_oom(); | |
1423 | ||
f334deba SS |
1424 | r = ordered_hashmap_ensure_put(&users, &item_hash_ops, j->name, j); |
1425 | if (r == -ENOMEM) | |
a12b0cc3 | 1426 | return log_oom(); |
f334deba SS |
1427 | if (r < 0) |
1428 | return log_error_errno(r, "Failed to add implicit user '%s': %m", j->name); | |
a12b0cc3 LP |
1429 | |
1430 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
f334deba | 1431 | TAKE_PTR(j); |
a12b0cc3 | 1432 | } |
d4f0412d YW |
1433 | |
1434 | if (!(ordered_hashmap_get(users, g) || | |
1435 | ordered_hashmap_get(groups, g))) { | |
1436 | _cleanup_(item_freep) Item *j = NULL; | |
1437 | ||
d4f0412d YW |
1438 | j = new0(Item, 1); |
1439 | if (!j) | |
1440 | return log_oom(); | |
1441 | ||
1442 | j->type = ADD_GROUP; | |
1443 | j->name = strdup(g); | |
1444 | if (!j->name) | |
1445 | return log_oom(); | |
1446 | ||
f334deba SS |
1447 | r = ordered_hashmap_ensure_put(&groups, &item_hash_ops, j->name, j); |
1448 | if (r == -ENOMEM) | |
d4f0412d | 1449 | return log_oom(); |
f334deba SS |
1450 | if (r < 0) |
1451 | return log_error_errno(r, "Failed to add implicit group '%s': %m", j->name); | |
d4f0412d YW |
1452 | |
1453 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
f334deba | 1454 | TAKE_PTR(j); |
a12b0cc3 LP |
1455 | } |
1456 | } | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
1b992147 LP |
1461 | static bool item_equal(Item *a, Item *b) { |
1462 | assert(a); | |
1463 | assert(b); | |
1464 | ||
1465 | if (a->type != b->type) | |
1466 | return false; | |
1467 | ||
1468 | if (!streq_ptr(a->name, b->name)) | |
1469 | return false; | |
1470 | ||
1471 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1472 | return false; | |
1473 | ||
1474 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1475 | return false; | |
1476 | ||
1477 | if (!streq_ptr(a->description, b->description)) | |
1478 | return false; | |
1479 | ||
1480 | if (a->uid_set != b->uid_set) | |
1481 | return false; | |
1482 | ||
1483 | if (a->uid_set && a->uid != b->uid) | |
1484 | return false; | |
1485 | ||
1486 | if (a->gid_set != b->gid_set) | |
1487 | return false; | |
1488 | ||
1489 | if (a->gid_set && a->gid != b->gid) | |
1490 | return false; | |
1491 | ||
7629889c LP |
1492 | if (!streq_ptr(a->home, b->home)) |
1493 | return false; | |
1494 | ||
7b1aaf66 ZJS |
1495 | if (!streq_ptr(a->shell, b->shell)) |
1496 | return false; | |
1497 | ||
1b992147 LP |
1498 | return true; |
1499 | } | |
1500 | ||
1b992147 | 1501 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
7b1aaf66 ZJS |
1502 | _cleanup_free_ char *action = NULL, |
1503 | *name = NULL, *resolved_name = NULL, | |
1504 | *id = NULL, *resolved_id = NULL, | |
b8bed700 YW |
1505 | *description = NULL, *resolved_description = NULL, |
1506 | *home = NULL, *resolved_home = NULL, | |
71fb1588 | 1507 | *shell = NULL, *resolved_shell = NULL; |
1b992147 LP |
1508 | _cleanup_(item_freep) Item *i = NULL; |
1509 | Item *existing; | |
5bc9c980 | 1510 | OrderedHashmap *h; |
7629889c LP |
1511 | int r; |
1512 | const char *p; | |
1b992147 LP |
1513 | |
1514 | assert(fname); | |
1515 | assert(line >= 1); | |
1516 | assert(buffer); | |
1517 | ||
7629889c LP |
1518 | /* Parse columns */ |
1519 | p = buffer; | |
4ec85141 | 1520 | r = extract_many_words(&p, NULL, EXTRACT_UNQUOTE, |
7b1aaf66 | 1521 | &action, &name, &id, &description, &home, &shell, NULL); |
330d1def ZJS |
1522 | if (r < 0) |
1523 | return log_error_errno(r, "[%s:%u] Syntax error.", fname, line); | |
1524 | if (r < 2) | |
1525 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1526 | "[%s:%u] Missing action and name columns.", fname, line); | |
1527 | if (!isempty(p)) | |
1528 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1529 | "[%s:%u] Trailing garbage.", fname, line); | |
1b992147 | 1530 | |
7629889c | 1531 | /* Verify action */ |
330d1def ZJS |
1532 | if (strlen(action) != 1) |
1533 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1534 | "[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1b992147 | 1535 | |
330d1def ZJS |
1536 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) |
1537 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), | |
1538 | "[%s:%u] Unknown command type '%c'.", fname, line, action[0]); | |
1b992147 | 1539 | |
7629889c | 1540 | /* Verify name */ |
e7b88b7b | 1541 | if (empty_or_dash(name)) |
97b11eed | 1542 | name = mfree(name); |
1b992147 | 1543 | |
8530dc44 | 1544 | if (name) { |
de61a04b | 1545 | r = specifier_printf(name, NAME_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved_name); |
330d1def | 1546 | if (r < 0) |
0f7e4b28 | 1547 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", fname, line, name); |
8530dc44 | 1548 | |
7a8867ab | 1549 | if (!valid_user_group_name(resolved_name, 0)) |
330d1def ZJS |
1550 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1551 | "[%s:%u] '%s' is not a valid user or group name.", | |
1552 | fname, line, resolved_name); | |
1b992147 LP |
1553 | } |
1554 | ||
8530dc44 | 1555 | /* Verify id */ |
e7b88b7b | 1556 | if (empty_or_dash(id)) |
97b11eed | 1557 | id = mfree(id); |
7629889c | 1558 | |
8530dc44 | 1559 | if (id) { |
de61a04b | 1560 | r = specifier_printf(id, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_id); |
330d1def | 1561 | if (r < 0) |
0f7e4b28 | 1562 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1563 | fname, line, name); |
8530dc44 LP |
1564 | } |
1565 | ||
1566 | /* Verify description */ | |
e7b88b7b | 1567 | if (empty_or_dash(description)) |
97b11eed | 1568 | description = mfree(description); |
1b992147 | 1569 | |
8530dc44 | 1570 | if (description) { |
de61a04b | 1571 | r = specifier_printf(description, LONG_LINE_MAX, system_and_tmp_specifier_table, arg_root, NULL, &resolved_description); |
330d1def | 1572 | if (r < 0) |
0f7e4b28 | 1573 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1574 | fname, line, description); |
b8bed700 | 1575 | |
330d1def ZJS |
1576 | if (!valid_gecos(resolved_description)) |
1577 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1578 | "[%s:%u] '%s' is not a valid GECOS field.", | |
1579 | fname, line, resolved_description); | |
8530dc44 LP |
1580 | } |
1581 | ||
1582 | /* Verify home */ | |
e7b88b7b | 1583 | if (empty_or_dash(home)) |
97b11eed | 1584 | home = mfree(home); |
1b992147 | 1585 | |
8530dc44 | 1586 | if (home) { |
de61a04b | 1587 | r = specifier_printf(home, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_home); |
330d1def | 1588 | if (r < 0) |
0f7e4b28 | 1589 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1590 | fname, line, home); |
b8bed700 | 1591 | |
330d1def ZJS |
1592 | if (!valid_home(resolved_home)) |
1593 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1594 | "[%s:%u] '%s' is not a valid home directory field.", | |
1595 | fname, line, resolved_home); | |
8530dc44 LP |
1596 | } |
1597 | ||
7b1aaf66 | 1598 | /* Verify shell */ |
e7b88b7b | 1599 | if (empty_or_dash(shell)) |
7b1aaf66 ZJS |
1600 | shell = mfree(shell); |
1601 | ||
1602 | if (shell) { | |
de61a04b | 1603 | r = specifier_printf(shell, PATH_MAX-1, system_and_tmp_specifier_table, arg_root, NULL, &resolved_shell); |
330d1def | 1604 | if (r < 0) |
0f7e4b28 | 1605 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1606 | fname, line, shell); |
7b1aaf66 | 1607 | |
330d1def ZJS |
1608 | if (!valid_shell(resolved_shell)) |
1609 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1610 | "[%s:%u] '%s' is not a valid login shell field.", | |
1611 | fname, line, resolved_shell); | |
7b1aaf66 ZJS |
1612 | } |
1613 | ||
a12b0cc3 | 1614 | switch (action[0]) { |
1b992147 | 1615 | |
8530dc44 | 1616 | case ADD_RANGE: |
330d1def ZJS |
1617 | if (resolved_name) |
1618 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1619 | "[%s:%u] Lines of type 'r' don't take a name field.", | |
1620 | fname, line); | |
1621 | ||
1622 | if (!resolved_id) | |
1623 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
387f6955 | 1624 | "[%s:%u] Lines of type 'r' require an ID range in the third field.", |
330d1def ZJS |
1625 | fname, line); |
1626 | ||
1627 | if (description || home || shell) | |
1628 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1629 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1630 | fname, line, action[0], | |
1631 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1632 | |
8530dc44 | 1633 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); |
330d1def ZJS |
1634 | if (r < 0) |
1635 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1636 | "[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
1b992147 | 1637 | |
8530dc44 LP |
1638 | return 0; |
1639 | ||
1640 | case ADD_MEMBER: { | |
8530dc44 | 1641 | /* Try to extend an existing member or group item */ |
330d1def ZJS |
1642 | if (!name) |
1643 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1644 | "[%s:%u] Lines of type 'm' require a user name in the second field.", | |
1645 | fname, line); | |
1646 | ||
1647 | if (!resolved_id) | |
1648 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1649 | "[%s:%u] Lines of type 'm' require a group name in the third field.", | |
1650 | fname, line); | |
1651 | ||
7a8867ab | 1652 | if (!valid_user_group_name(resolved_id, 0)) |
330d1def ZJS |
1653 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1654 | "[%s:%u] '%s' is not a valid user or group name.", | |
1655 | fname, line, resolved_id); | |
1656 | ||
1657 | if (description || home || shell) | |
1658 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1659 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1660 | fname, line, action[0], | |
1661 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
8530dc44 | 1662 | |
cde79109 | 1663 | r = string_strv_ordered_hashmap_put(&members, resolved_id, resolved_name); |
7629889c | 1664 | if (r < 0) |
cde79109 | 1665 | return log_error_errno(r, "Failed to store mapping for %s: %m", resolved_id); |
a12b0cc3 LP |
1666 | |
1667 | return 0; | |
1b992147 LP |
1668 | } |
1669 | ||
a12b0cc3 | 1670 | case ADD_USER: |
330d1def ZJS |
1671 | if (!name) |
1672 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1673 | "[%s:%u] Lines of type 'u' require a user name in the second field.", | |
1674 | fname, line); | |
8530dc44 | 1675 | |
71da1673 | 1676 | r = ordered_hashmap_ensure_allocated(&users, &item_hash_ops); |
a12b0cc3 LP |
1677 | if (r < 0) |
1678 | return log_oom(); | |
1679 | ||
1680 | i = new0(Item, 1); | |
1681 | if (!i) | |
1682 | return log_oom(); | |
1683 | ||
8530dc44 LP |
1684 | if (resolved_id) { |
1685 | if (path_is_absolute(resolved_id)) { | |
1cc6c93a | 1686 | i->uid_path = TAKE_PTR(resolved_id); |
4ff361cc | 1687 | path_simplify(i->uid_path); |
a12b0cc3 | 1688 | } else { |
4cb41413 MV |
1689 | _cleanup_free_ char *uid = NULL, *gid = NULL; |
1690 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1691 | r = parse_gid(gid, &i->gid); | |
649916d3 | 1692 | if (r < 0) { |
7a8867ab | 1693 | if (valid_user_group_name(gid, 0)) |
649916d3 DM |
1694 | i->group_name = TAKE_PTR(gid); |
1695 | else | |
1696 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1697 | } else { | |
1698 | i->gid_set = true; | |
1699 | i->id_set_strict = true; | |
1700 | } | |
4cb41413 | 1701 | free_and_replace(resolved_id, uid); |
a12b0cc3 | 1702 | } |
1825c909 MV |
1703 | if (!streq(resolved_id, "-")) { |
1704 | r = parse_uid(resolved_id, &i->uid); | |
1705 | if (r < 0) | |
1706 | return log_error_errno(r, "Failed to parse UID: '%s': %m", id); | |
1707 | i->uid_set = true; | |
1708 | } | |
a12b0cc3 LP |
1709 | } |
1710 | } | |
1711 | ||
b8bed700 YW |
1712 | i->description = TAKE_PTR(resolved_description); |
1713 | i->home = TAKE_PTR(resolved_home); | |
1cc6c93a | 1714 | i->shell = TAKE_PTR(resolved_shell); |
7b1aaf66 | 1715 | |
1b992147 | 1716 | h = users; |
a12b0cc3 LP |
1717 | break; |
1718 | ||
1719 | case ADD_GROUP: | |
330d1def ZJS |
1720 | if (!name) |
1721 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1722 | "[%s:%u] Lines of type 'g' require a user name in the second field.", | |
1723 | fname, line); | |
a12b0cc3 | 1724 | |
330d1def ZJS |
1725 | if (description || home || shell) |
1726 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1727 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1728 | fname, line, action[0], | |
1729 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1730 | |
71da1673 | 1731 | r = ordered_hashmap_ensure_allocated(&groups, &item_hash_ops); |
7629889c LP |
1732 | if (r < 0) |
1733 | return log_oom(); | |
1734 | ||
a12b0cc3 LP |
1735 | i = new0(Item, 1); |
1736 | if (!i) | |
1737 | return log_oom(); | |
1738 | ||
8530dc44 LP |
1739 | if (resolved_id) { |
1740 | if (path_is_absolute(resolved_id)) { | |
1cc6c93a | 1741 | i->gid_path = TAKE_PTR(resolved_id); |
4ff361cc | 1742 | path_simplify(i->gid_path); |
a12b0cc3 | 1743 | } else { |
8530dc44 | 1744 | r = parse_gid(resolved_id, &i->gid); |
4cb41413 MV |
1745 | if (r < 0) |
1746 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
a12b0cc3 LP |
1747 | |
1748 | i->gid_set = true; | |
1749 | } | |
1750 | } | |
1751 | ||
1b992147 | 1752 | h = groups; |
a12b0cc3 | 1753 | break; |
8530dc44 | 1754 | |
bce415ed RC |
1755 | default: |
1756 | return -EBADMSG; | |
1b992147 | 1757 | } |
a12b0cc3 LP |
1758 | |
1759 | i->type = action[0]; | |
1cc6c93a | 1760 | i->name = TAKE_PTR(resolved_name); |
1b992147 | 1761 | |
5bc9c980 | 1762 | existing = ordered_hashmap_get(h, i->name); |
1b992147 | 1763 | if (existing) { |
1b992147 LP |
1764 | /* Two identical items are fine */ |
1765 | if (!item_equal(existing, i)) | |
9a5af4b7 ZJS |
1766 | log_warning("%s:%u: conflict with earlier configuration for %s '%s', ignoring line.", |
1767 | fname, line, | |
1768 | item_type_to_string(i->type), i->name); | |
1b992147 LP |
1769 | |
1770 | return 0; | |
1771 | } | |
1772 | ||
5bc9c980 | 1773 | r = ordered_hashmap_put(h, i->name, i); |
a12b0cc3 LP |
1774 | if (r < 0) |
1775 | return log_oom(); | |
1b992147 LP |
1776 | |
1777 | i = NULL; | |
1778 | return 0; | |
1779 | } | |
1780 | ||
1781 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
dfc87cbf | 1782 | _cleanup_fclose_ FILE *rf = NULL; |
2708160c | 1783 | _cleanup_free_ char *pp = NULL; |
dfc87cbf | 1784 | FILE *f = NULL; |
1b992147 | 1785 | unsigned v = 0; |
c4640902 | 1786 | int r = 0; |
1b992147 LP |
1787 | |
1788 | assert(fn); | |
1789 | ||
dfc87cbf LP |
1790 | if (streq(fn, "-")) |
1791 | f = stdin; | |
1792 | else { | |
2708160c | 1793 | r = search_and_fopen(fn, "re", arg_root, (const char**) CONF_PATHS_STRV("sysusers.d"), &rf, &pp); |
dfc87cbf LP |
1794 | if (r < 0) { |
1795 | if (ignore_enoent && r == -ENOENT) | |
1796 | return 0; | |
1b992147 | 1797 | |
8d3d7072 | 1798 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); |
dfc87cbf LP |
1799 | } |
1800 | ||
1801 | f = rf; | |
2708160c | 1802 | fn = pp; |
1b992147 LP |
1803 | } |
1804 | ||
050ca299 LP |
1805 | for (;;) { |
1806 | _cleanup_free_ char *line = NULL; | |
1b992147 LP |
1807 | char *l; |
1808 | int k; | |
1809 | ||
050ca299 LP |
1810 | k = read_line(f, LONG_LINE_MAX, &line); |
1811 | if (k < 0) | |
1812 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
1813 | if (k == 0) | |
1814 | break; | |
1815 | ||
1b992147 LP |
1816 | v++; |
1817 | ||
1818 | l = strstrip(line); | |
4c701096 | 1819 | if (IN_SET(*l, 0, '#')) |
1b992147 LP |
1820 | continue; |
1821 | ||
1822 | k = parse_line(fn, v, l); | |
1823 | if (k < 0 && r == 0) | |
1824 | r = k; | |
1825 | } | |
1826 | ||
1827 | if (ferror(f)) { | |
56f64d95 | 1828 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
1b992147 LP |
1829 | if (r == 0) |
1830 | r = -EIO; | |
1831 | } | |
1832 | ||
1833 | return r; | |
1834 | } | |
1835 | ||
ec0327d6 ZJS |
1836 | static int cat_config(void) { |
1837 | _cleanup_strv_free_ char **files = NULL; | |
ec0327d6 ZJS |
1838 | int r; |
1839 | ||
a826d4f7 | 1840 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, NULL); |
ec0327d6 ZJS |
1841 | if (r < 0) |
1842 | return r; | |
1843 | ||
384c2c32 | 1844 | pager_open(arg_pager_flags); |
dcd5c891 | 1845 | |
ec0327d6 ZJS |
1846 | return cat_files(NULL, files, 0); |
1847 | } | |
1848 | ||
37ec0fdd LP |
1849 | static int help(void) { |
1850 | _cleanup_free_ char *link = NULL; | |
1851 | int r; | |
1852 | ||
1853 | r = terminal_urlify_man("systemd-sysusers.service", "8", &link); | |
1854 | if (r < 0) | |
1855 | return log_oom(); | |
1856 | ||
1b992147 LP |
1857 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1858 | "Creates system user accounts.\n\n" | |
1859 | " -h --help Show this help\n" | |
1860 | " --version Show package version\n" | |
ec0327d6 | 1861 | " --cat-config Show configuration files\n" |
601185b4 | 1862 | " --root=PATH Operate on an alternate filesystem root\n" |
0c3ee127 | 1863 | " --image=PATH Operate on disk image as filesystem root\n" |
d16a1c1b | 1864 | " --replace=PATH Treat arguments as replacement for PATH\n" |
64fe1095 | 1865 | " --dry-run Just print what would be done\n" |
1b600bd5 | 1866 | " --inline Treat arguments as configuration lines\n" |
dcd5c891 | 1867 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
1868 | "\nSee the %s for details.\n", |
1869 | program_invocation_short_name, | |
1870 | link); | |
37ec0fdd LP |
1871 | |
1872 | return 0; | |
1b992147 LP |
1873 | } |
1874 | ||
1875 | static int parse_argv(int argc, char *argv[]) { | |
1876 | ||
1877 | enum { | |
1878 | ARG_VERSION = 0x100, | |
ec0327d6 | 1879 | ARG_CAT_CONFIG, |
1b992147 | 1880 | ARG_ROOT, |
0c3ee127 | 1881 | ARG_IMAGE, |
d16a1c1b | 1882 | ARG_REPLACE, |
64fe1095 | 1883 | ARG_DRY_RUN, |
1b600bd5 | 1884 | ARG_INLINE, |
dcd5c891 | 1885 | ARG_NO_PAGER, |
1b992147 LP |
1886 | }; |
1887 | ||
1888 | static const struct option options[] = { | |
ec0327d6 ZJS |
1889 | { "help", no_argument, NULL, 'h' }, |
1890 | { "version", no_argument, NULL, ARG_VERSION }, | |
1891 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, | |
1892 | { "root", required_argument, NULL, ARG_ROOT }, | |
64fe1095 | 1893 | { "image", required_argument, NULL, ARG_IMAGE }, |
ec0327d6 | 1894 | { "replace", required_argument, NULL, ARG_REPLACE }, |
64fe1095 | 1895 | { "dry-run", no_argument, NULL, ARG_DRY_RUN }, |
ec0327d6 | 1896 | { "inline", no_argument, NULL, ARG_INLINE }, |
dcd5c891 | 1897 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
1b992147 LP |
1898 | {} |
1899 | }; | |
1900 | ||
0f474365 | 1901 | int c, r; |
1b992147 LP |
1902 | |
1903 | assert(argc >= 0); | |
1904 | assert(argv); | |
1905 | ||
601185b4 | 1906 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
1907 | |
1908 | switch (c) { | |
1909 | ||
1910 | case 'h': | |
37ec0fdd | 1911 | return help(); |
1b992147 LP |
1912 | |
1913 | case ARG_VERSION: | |
3f6fd1ba | 1914 | return version(); |
1b992147 | 1915 | |
ec0327d6 ZJS |
1916 | case ARG_CAT_CONFIG: |
1917 | arg_cat_config = true; | |
1918 | break; | |
1919 | ||
1b992147 | 1920 | case ARG_ROOT: |
614b022c | 1921 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
0f474365 | 1922 | if (r < 0) |
0f03c2a4 | 1923 | return r; |
1b992147 LP |
1924 | break; |
1925 | ||
0c3ee127 | 1926 | case ARG_IMAGE: |
3537577c ZJS |
1927 | #ifdef STANDALONE |
1928 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
1929 | "This systemd-sysusers version is compiled without support for --image=."); | |
1930 | #else | |
614b022c | 1931 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
0c3ee127 LP |
1932 | if (r < 0) |
1933 | return r; | |
1934 | break; | |
3537577c | 1935 | #endif |
0c3ee127 | 1936 | |
d16a1c1b ZJS |
1937 | case ARG_REPLACE: |
1938 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
1939 | !endswith(optarg, ".conf")) |
1940 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1941 | "The argument to --replace= must an absolute path to a config file"); | |
d16a1c1b ZJS |
1942 | |
1943 | arg_replace = optarg; | |
1944 | break; | |
1945 | ||
64fe1095 ZJS |
1946 | case ARG_DRY_RUN: |
1947 | arg_dry_run = true; | |
1948 | break; | |
1949 | ||
1b600bd5 ZJS |
1950 | case ARG_INLINE: |
1951 | arg_inline = true; | |
1952 | break; | |
1953 | ||
dcd5c891 | 1954 | case ARG_NO_PAGER: |
0221d68a | 1955 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
1956 | break; |
1957 | ||
1b992147 LP |
1958 | case '?': |
1959 | return -EINVAL; | |
1960 | ||
1961 | default: | |
04499a70 | 1962 | assert_not_reached(); |
1b992147 | 1963 | } |
1b992147 | 1964 | |
baaa35ad ZJS |
1965 | if (arg_replace && arg_cat_config) |
1966 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1967 | "Option --replace= is not supported with --cat-config"); | |
ec0327d6 | 1968 | |
baaa35ad ZJS |
1969 | if (arg_replace && optind >= argc) |
1970 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1971 | "When --replace= is given, some configuration items must be specified"); | |
d16a1c1b | 1972 | |
0c3ee127 LP |
1973 | if (arg_image && arg_root) |
1974 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
1975 | ||
1b992147 LP |
1976 | return 1; |
1977 | } | |
1978 | ||
d16a1c1b ZJS |
1979 | static int parse_arguments(char **args) { |
1980 | char **arg; | |
1981 | unsigned pos = 1; | |
1982 | int r; | |
1983 | ||
1984 | STRV_FOREACH(arg, args) { | |
1985 | if (arg_inline) | |
1986 | /* Use (argument):n, where n==1 for the first positional arg */ | |
1987 | r = parse_line("(argument)", pos, *arg); | |
1988 | else | |
1989 | r = read_config_file(*arg, false); | |
1990 | if (r < 0) | |
1991 | return r; | |
1992 | ||
1993 | pos++; | |
1994 | } | |
1995 | ||
1996 | return 0; | |
1997 | } | |
1998 | ||
ec0327d6 | 1999 | static int read_config_files(char **args) { |
d16a1c1b ZJS |
2000 | _cleanup_strv_free_ char **files = NULL; |
2001 | _cleanup_free_ char *p = NULL; | |
2002 | char **f; | |
2003 | int r; | |
2004 | ||
a826d4f7 | 2005 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, &p); |
d16a1c1b | 2006 | if (r < 0) |
ec0327d6 | 2007 | return r; |
d16a1c1b ZJS |
2008 | |
2009 | STRV_FOREACH(f, files) | |
2010 | if (p && path_equal(*f, p)) { | |
2011 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
2012 | ||
2013 | r = parse_arguments(args); | |
2014 | if (r < 0) | |
2015 | return r; | |
2016 | } else { | |
2017 | log_debug("Reading config file \"%s\"…", *f); | |
2018 | ||
2019 | /* Just warn, ignore result otherwise */ | |
2020 | (void) read_config_file(*f, true); | |
2021 | } | |
2022 | ||
2023 | return 0; | |
2024 | } | |
2025 | ||
71da1673 | 2026 | static int run(int argc, char *argv[]) { |
3537577c | 2027 | #ifndef STANDALONE |
0c3ee127 LP |
2028 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
2029 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
2030 | _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; | |
3537577c | 2031 | #endif |
1b992147 | 2032 | _cleanup_close_ int lock = -1; |
1b992147 | 2033 | Item *i; |
dd2fd972 | 2034 | int r; |
1b992147 LP |
2035 | |
2036 | r = parse_argv(argc, argv); | |
2037 | if (r <= 0) | |
71da1673 | 2038 | return r; |
1b992147 | 2039 | |
d2acb93d | 2040 | log_setup(); |
1b992147 | 2041 | |
71da1673 YW |
2042 | if (arg_cat_config) |
2043 | return cat_config(); | |
ec0327d6 | 2044 | |
1b992147 LP |
2045 | umask(0022); |
2046 | ||
c3dacc8b | 2047 | r = mac_selinux_init(); |
71da1673 | 2048 | if (r < 0) |
a9ba0e32 | 2049 | return r; |
1b992147 | 2050 | |
3537577c | 2051 | #ifndef STANDALONE |
0c3ee127 LP |
2052 | if (arg_image) { |
2053 | assert(!arg_root); | |
2054 | ||
2055 | r = mount_image_privately_interactively( | |
2056 | arg_image, | |
4b5de5dd LP |
2057 | DISSECT_IMAGE_GENERIC_ROOT | |
2058 | DISSECT_IMAGE_REQUIRE_ROOT | | |
2059 | DISSECT_IMAGE_VALIDATE_OS | | |
2060 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a LP |
2061 | DISSECT_IMAGE_FSCK | |
2062 | DISSECT_IMAGE_GROWFS, | |
0c3ee127 LP |
2063 | &unlink_dir, |
2064 | &loop_device, | |
2065 | &decrypted_image); | |
2066 | if (r < 0) | |
2067 | return r; | |
2068 | ||
2069 | arg_root = strdup(unlink_dir); | |
2070 | if (!arg_root) | |
2071 | return log_oom(); | |
2072 | } | |
3537577c ZJS |
2073 | #else |
2074 | assert(!arg_image); | |
2075 | #endif | |
0c3ee127 | 2076 | |
d16a1c1b ZJS |
2077 | /* If command line arguments are specified along with --replace, read all |
2078 | * configuration files and insert the positional arguments at the specified | |
2079 | * place. Otherwise, if command line arguments are specified, execute just | |
2080 | * them, and finally, without --replace= or any positional arguments, just | |
2081 | * read configuration and execute it. | |
2082 | */ | |
2083 | if (arg_replace || optind >= argc) | |
ec0327d6 | 2084 | r = read_config_files(argv + optind); |
d16a1c1b ZJS |
2085 | else |
2086 | r = parse_arguments(argv + optind); | |
2087 | if (r < 0) | |
71da1673 | 2088 | return r; |
1b992147 | 2089 | |
fe102d6a LP |
2090 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection |
2091 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
2092 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
2093 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
2094 | * /etc. */ | |
71da1673 YW |
2095 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) |
2096 | return log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
fe102d6a | 2097 | |
8530dc44 | 2098 | if (!uid_range) { |
aa25270c | 2099 | /* Default to default range of SYSTEMD_UID_MIN..SYSTEM_UID_MAX. */ |
4b6f9b20 | 2100 | r = read_login_defs(&login_defs, NULL, arg_root); |
71da1673 | 2101 | if (r < 0) |
aa25270c ZJS |
2102 | return log_error_errno(r, "Failed to read %s%s: %m", |
2103 | strempty(arg_root), "/etc/login.defs"); | |
2104 | ||
4b6f9b20 ZJS |
2105 | login_defs_need_warning = true; |
2106 | ||
aa25270c | 2107 | /* We pick a range that very conservative: we look at compiled-in maximum and the value in |
3f316701 | 2108 | * /etc/login.defs. That way the UIDs/GIDs which we allocate will be interpreted correctly, |
aa25270c ZJS |
2109 | * even if /etc/login.defs is removed later. (The bottom bound doesn't matter much, since |
2110 | * it's only used during allocation, so we use the configured value directly). */ | |
4b6f9b20 ZJS |
2111 | uid_t begin = login_defs.system_alloc_uid_min, |
2112 | end = MIN3((uid_t) SYSTEM_UID_MAX, login_defs.system_uid_max, login_defs.system_gid_max); | |
aa25270c ZJS |
2113 | if (begin < end) { |
2114 | r = uid_range_add(&uid_range, &n_uid_range, begin, end - begin + 1); | |
2115 | if (r < 0) | |
2116 | return log_oom(); | |
2117 | } | |
8530dc44 LP |
2118 | } |
2119 | ||
a12b0cc3 LP |
2120 | r = add_implicit(); |
2121 | if (r < 0) | |
71da1673 | 2122 | return r; |
a12b0cc3 | 2123 | |
64fe1095 ZJS |
2124 | if (!arg_dry_run) { |
2125 | lock = take_etc_passwd_lock(arg_root); | |
2126 | if (lock < 0) | |
2127 | return log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); | |
2128 | } | |
1b992147 LP |
2129 | |
2130 | r = load_user_database(); | |
71da1673 YW |
2131 | if (r < 0) |
2132 | return log_error_errno(r, "Failed to load user database: %m"); | |
1b992147 LP |
2133 | |
2134 | r = load_group_database(); | |
71da1673 YW |
2135 | if (r < 0) |
2136 | return log_error_errno(r, "Failed to read group database: %m"); | |
1b992147 | 2137 | |
90e74a66 | 2138 | ORDERED_HASHMAP_FOREACH(i, groups) |
c1a32819 | 2139 | (void) process_item(i); |
1b992147 | 2140 | |
90e74a66 | 2141 | ORDERED_HASHMAP_FOREACH(i, users) |
c1a32819 | 2142 | (void) process_item(i); |
1b992147 LP |
2143 | |
2144 | r = write_files(); | |
2145 | if (r < 0) | |
71da1673 | 2146 | return log_error_errno(r, "Failed to write files: %m"); |
1b992147 | 2147 | |
71da1673 | 2148 | return 0; |
1b992147 | 2149 | } |
71da1673 YW |
2150 | |
2151 | DEFINE_MAIN_FUNCTION(run); |