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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" |
e4de7287 | 32 | #include "tmpfile-util-label.h" |
3f6fd1ba | 33 | #include "uid-range.h" |
aa25270c | 34 | #include "user-record.h" |
a0f29c76 | 35 | #include "user-util.h" |
3f6fd1ba LP |
36 | #include "utf8.h" |
37 | #include "util.h" | |
1b992147 LP |
38 | |
39 | typedef enum ItemType { | |
40 | ADD_USER = 'u', | |
41 | ADD_GROUP = 'g', | |
a12b0cc3 | 42 | ADD_MEMBER = 'm', |
8530dc44 | 43 | ADD_RANGE = 'r', |
1b992147 | 44 | } ItemType; |
dcd5c891 | 45 | |
1b992147 LP |
46 | typedef struct Item { |
47 | ItemType type; | |
48 | ||
49 | char *name; | |
649916d3 | 50 | char *group_name; |
1b992147 LP |
51 | char *uid_path; |
52 | char *gid_path; | |
53 | char *description; | |
7629889c | 54 | char *home; |
7b1aaf66 | 55 | char *shell; |
1b992147 LP |
56 | |
57 | gid_t gid; | |
58 | uid_t uid; | |
59 | ||
60 | bool gid_set:1; | |
fb959f14 ZJS |
61 | |
62 | /* When set the group with the specified gid must exist | |
63 | * and the check if a uid clashes with the gid is skipped. | |
64 | */ | |
b9ee05c2 | 65 | bool id_set_strict:1; |
fb959f14 | 66 | |
1b992147 LP |
67 | bool uid_set:1; |
68 | ||
c1b6b04f KS |
69 | bool todo_user:1; |
70 | bool todo_group:1; | |
1b992147 LP |
71 | } Item; |
72 | ||
73 | static char *arg_root = NULL; | |
0c3ee127 | 74 | static char *arg_image = NULL; |
ec0327d6 | 75 | static bool arg_cat_config = false; |
d16a1c1b | 76 | static const char *arg_replace = NULL; |
1b600bd5 | 77 | static bool arg_inline = false; |
0221d68a | 78 | static PagerFlags arg_pager_flags = 0; |
1b992147 | 79 | |
5bc9c980 MV |
80 | static OrderedHashmap *users = NULL, *groups = NULL; |
81 | static OrderedHashmap *todo_uids = NULL, *todo_gids = NULL; | |
82 | static OrderedHashmap *members = NULL; | |
1b992147 | 83 | |
71da1673 YW |
84 | static Hashmap *database_by_uid = NULL, *database_by_username = NULL; |
85 | static Hashmap *database_by_gid = NULL, *database_by_groupname = NULL; | |
86 | static Set *database_users = NULL, *database_groups = NULL; | |
1b992147 | 87 | |
fed1e721 | 88 | static uid_t search_uid = UID_INVALID; |
8530dc44 LP |
89 | static UidRange *uid_range = NULL; |
90 | static unsigned n_uid_range = 0; | |
1b992147 | 91 | |
4b6f9b20 ZJS |
92 | static UGIDAllocationRange login_defs = {}; |
93 | static bool login_defs_need_warning = false; | |
94 | ||
71da1673 YW |
95 | STATIC_DESTRUCTOR_REGISTER(groups, ordered_hashmap_freep); |
96 | STATIC_DESTRUCTOR_REGISTER(users, ordered_hashmap_freep); | |
97 | STATIC_DESTRUCTOR_REGISTER(members, ordered_hashmap_freep); | |
98 | STATIC_DESTRUCTOR_REGISTER(todo_uids, ordered_hashmap_freep); | |
99 | STATIC_DESTRUCTOR_REGISTER(todo_gids, ordered_hashmap_freep); | |
100 | STATIC_DESTRUCTOR_REGISTER(database_by_uid, hashmap_freep); | |
101 | STATIC_DESTRUCTOR_REGISTER(database_by_username, hashmap_freep); | |
102 | STATIC_DESTRUCTOR_REGISTER(database_users, set_free_freep); | |
103 | STATIC_DESTRUCTOR_REGISTER(database_by_gid, hashmap_freep); | |
104 | STATIC_DESTRUCTOR_REGISTER(database_by_groupname, hashmap_freep); | |
105 | STATIC_DESTRUCTOR_REGISTER(database_groups, set_free_freep); | |
106 | STATIC_DESTRUCTOR_REGISTER(uid_range, freep); | |
107 | STATIC_DESTRUCTOR_REGISTER(arg_root, freep); | |
0c3ee127 | 108 | STATIC_DESTRUCTOR_REGISTER(arg_image, freep); |
71da1673 | 109 | |
08c7c321 ZJS |
110 | static int errno_is_not_exists(int code) { |
111 | /* See getpwnam(3) and getgrnam(3): those codes and others can be returned if the user or group are | |
112 | * not found. */ | |
113 | return IN_SET(code, 0, ENOENT, ESRCH, EBADF, EPERM); | |
114 | } | |
115 | ||
4b6f9b20 ZJS |
116 | static void maybe_emit_login_defs_warning(void) { |
117 | if (!login_defs_need_warning) | |
118 | return; | |
119 | ||
120 | if (login_defs.system_alloc_uid_min != SYSTEM_ALLOC_UID_MIN || | |
121 | login_defs.system_uid_max != SYSTEM_UID_MAX) | |
122 | log_warning("login.defs specifies UID allocation range "UID_FMT"–"UID_FMT | |
123 | " that is different than the built-in defaults ("UID_FMT"–"UID_FMT")", | |
124 | login_defs.system_alloc_uid_min, login_defs.system_uid_max, | |
125 | SYSTEM_ALLOC_UID_MIN, SYSTEM_UID_MAX); | |
126 | if (login_defs.system_alloc_gid_min != SYSTEM_ALLOC_GID_MIN || | |
127 | login_defs.system_gid_max != SYSTEM_GID_MAX) | |
128 | log_warning("login.defs specifies GID allocation range "GID_FMT"–"GID_FMT | |
129 | " that is different than the built-in defaults ("GID_FMT"–"GID_FMT")", | |
130 | login_defs.system_alloc_gid_min, login_defs.system_gid_max, | |
131 | SYSTEM_ALLOC_GID_MIN, SYSTEM_GID_MAX); | |
132 | ||
133 | login_defs_need_warning = false; | |
134 | } | |
135 | ||
1b992147 LP |
136 | static int load_user_database(void) { |
137 | _cleanup_fclose_ FILE *f = NULL; | |
138 | const char *passwd_path; | |
139 | struct passwd *pw; | |
140 | int r; | |
141 | ||
1d13f648 | 142 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); |
1b992147 LP |
143 | f = fopen(passwd_path, "re"); |
144 | if (!f) | |
145 | return errno == ENOENT ? 0 : -errno; | |
146 | ||
71da1673 | 147 | r = hashmap_ensure_allocated(&database_by_username, &string_hash_ops); |
1b992147 LP |
148 | if (r < 0) |
149 | return r; | |
150 | ||
71da1673 | 151 | r = hashmap_ensure_allocated(&database_by_uid, NULL); |
1b992147 LP |
152 | if (r < 0) |
153 | return r; | |
154 | ||
71da1673 | 155 | r = set_ensure_allocated(&database_users, NULL); |
1b992147 LP |
156 | if (r < 0) |
157 | return r; | |
158 | ||
100d5f6e | 159 | while ((r = fgetpwent_sane(f, &pw)) > 0) { |
43e948ee | 160 | char *n; |
340ac019 | 161 | int k, q; |
1b992147 LP |
162 | |
163 | n = strdup(pw->pw_name); | |
164 | if (!n) | |
165 | return -ENOMEM; | |
166 | ||
71da1673 YW |
167 | k = set_put(database_users, n); |
168 | if (k < 0) { | |
1b992147 LP |
169 | free(n); |
170 | return k; | |
171 | } | |
172 | ||
71da1673 YW |
173 | k = hashmap_put(database_by_username, n, UID_TO_PTR(pw->pw_uid)); |
174 | if (k < 0 && k != -EEXIST) | |
175 | return k; | |
1b992147 | 176 | |
71da1673 YW |
177 | q = hashmap_put(database_by_uid, UID_TO_PTR(pw->pw_uid), n); |
178 | if (q < 0 && q != -EEXIST) | |
179 | return q; | |
1b992147 | 180 | } |
100d5f6e | 181 | return r; |
1b992147 LP |
182 | } |
183 | ||
184 | static int load_group_database(void) { | |
185 | _cleanup_fclose_ FILE *f = NULL; | |
186 | const char *group_path; | |
187 | struct group *gr; | |
188 | int r; | |
189 | ||
1d13f648 | 190 | group_path = prefix_roota(arg_root, "/etc/group"); |
1b992147 LP |
191 | f = fopen(group_path, "re"); |
192 | if (!f) | |
193 | return errno == ENOENT ? 0 : -errno; | |
194 | ||
71da1673 | 195 | r = hashmap_ensure_allocated(&database_by_groupname, &string_hash_ops); |
1b992147 LP |
196 | if (r < 0) |
197 | return r; | |
198 | ||
71da1673 | 199 | r = hashmap_ensure_allocated(&database_by_gid, NULL); |
1b992147 LP |
200 | if (r < 0) |
201 | return r; | |
202 | ||
71da1673 | 203 | r = set_ensure_allocated(&database_groups, NULL); |
1b992147 LP |
204 | if (r < 0) |
205 | return r; | |
206 | ||
f030d36c | 207 | while ((r = fgetgrent_sane(f, &gr)) > 0) { |
1b992147 LP |
208 | char *n; |
209 | int k, q; | |
210 | ||
211 | n = strdup(gr->gr_name); | |
212 | if (!n) | |
213 | return -ENOMEM; | |
214 | ||
71da1673 YW |
215 | k = set_put(database_groups, n); |
216 | if (k < 0) { | |
1b992147 LP |
217 | free(n); |
218 | return k; | |
219 | } | |
220 | ||
71da1673 YW |
221 | k = hashmap_put(database_by_groupname, n, GID_TO_PTR(gr->gr_gid)); |
222 | if (k < 0 && k != -EEXIST) | |
223 | return k; | |
1b992147 | 224 | |
71da1673 YW |
225 | q = hashmap_put(database_by_gid, GID_TO_PTR(gr->gr_gid), n); |
226 | if (q < 0 && q != -EEXIST) | |
227 | return q; | |
1b992147 | 228 | } |
f030d36c | 229 | return r; |
1b992147 LP |
230 | } |
231 | ||
9f1c1940 | 232 | static int make_backup(const char *target, const char *x) { |
62c03398 | 233 | _cleanup_(unlink_and_freep) char *dst_tmp = NULL; |
9f1c1940 | 234 | _cleanup_fclose_ FILE *dst = NULL; |
62c03398 LP |
235 | _cleanup_close_ int src = -1; |
236 | const char *backup; | |
1b992147 LP |
237 | struct stat st; |
238 | int r; | |
239 | ||
62c03398 LP |
240 | assert(target); |
241 | assert(x); | |
242 | ||
1b992147 LP |
243 | src = open(x, O_RDONLY|O_CLOEXEC|O_NOCTTY); |
244 | if (src < 0) { | |
245 | if (errno == ENOENT) /* No backup necessary... */ | |
246 | return 0; | |
247 | ||
248 | return -errno; | |
249 | } | |
250 | ||
251 | if (fstat(src, &st) < 0) | |
252 | return -errno; | |
253 | ||
62c03398 LP |
254 | r = fopen_temporary_label( |
255 | target, /* The path for which to the lookup the label */ | |
256 | x, /* Where we want the file actually to end up */ | |
257 | &dst, | |
258 | &dst_tmp /* The temporary file we write to */); | |
9f1c1940 ZJS |
259 | if (r < 0) |
260 | return r; | |
1b992147 | 261 | |
f5fbe71d | 262 | r = copy_bytes(src, fileno(dst), UINT64_MAX, COPY_REFLINK); |
1b992147 | 263 | if (r < 0) |
62c03398 | 264 | return r; |
9f1c1940 | 265 | |
63c372cb | 266 | backup = strjoina(x, "-"); |
9f1c1940 | 267 | |
62c03398 LP |
268 | /* Copy over the access mask. Don't fail on chmod() or chown(). If it stays owned by us and/or |
269 | * unreadable by others, then it isn't too bad... */ | |
270 | r = fchmod_and_chown(fileno(dst), st.st_mode & 07777, st.st_uid, st.st_gid); | |
c039af23 YW |
271 | if (r < 0) |
272 | log_warning_errno(r, "Failed to change access mode or ownership of %s: %m", backup); | |
1b992147 | 273 | |
62c03398 | 274 | if (futimens(fileno(dst), (const struct timespec[2]) { st.st_atim, st.st_mtim }) < 0) |
56f64d95 | 275 | log_warning_errno(errno, "Failed to fix access and modification time of %s: %m", backup); |
1b992147 | 276 | |
62c03398 | 277 | r = fsync_full(fileno(dst)); |
0675e94a | 278 | if (r < 0) |
62c03398 | 279 | return r; |
0675e94a | 280 | |
62c03398 LP |
281 | if (rename(dst_tmp, backup) < 0) |
282 | return errno; | |
1b992147 | 283 | |
62c03398 | 284 | dst_tmp = mfree(dst_tmp); /* disable the unlink_and_freep() hook now that the file has been renamed*/ |
1b992147 | 285 | return 0; |
1b992147 LP |
286 | } |
287 | ||
a12b0cc3 LP |
288 | static int putgrent_with_members(const struct group *gr, FILE *group) { |
289 | char **a; | |
290 | ||
291 | assert(gr); | |
292 | assert(group); | |
293 | ||
5bc9c980 | 294 | a = ordered_hashmap_get(members, gr->gr_name); |
a12b0cc3 LP |
295 | if (a) { |
296 | _cleanup_strv_free_ char **l = NULL; | |
297 | bool added = false; | |
298 | char **i; | |
299 | ||
300 | l = strv_copy(gr->gr_mem); | |
301 | if (!l) | |
302 | return -ENOMEM; | |
303 | ||
304 | STRV_FOREACH(i, a) { | |
305 | if (strv_find(l, *i)) | |
306 | continue; | |
307 | ||
308 | if (strv_extend(&l, *i) < 0) | |
309 | return -ENOMEM; | |
310 | ||
311 | added = true; | |
312 | } | |
313 | ||
314 | if (added) { | |
315 | struct group t; | |
100d5f6e | 316 | int r; |
a12b0cc3 LP |
317 | |
318 | strv_uniq(l); | |
319 | strv_sort(l); | |
320 | ||
321 | t = *gr; | |
322 | t.gr_mem = l; | |
323 | ||
100d5f6e FB |
324 | r = putgrent_sane(&t, group); |
325 | return r < 0 ? r : 1; | |
a12b0cc3 LP |
326 | } |
327 | } | |
328 | ||
100d5f6e | 329 | return putgrent_sane(gr, group); |
a12b0cc3 LP |
330 | } |
331 | ||
349cc4a5 | 332 | #if ENABLE_GSHADOW |
9ab315cc LP |
333 | static int putsgent_with_members(const struct sgrp *sg, FILE *gshadow) { |
334 | char **a; | |
335 | ||
336 | assert(sg); | |
337 | assert(gshadow); | |
338 | ||
5bc9c980 | 339 | a = ordered_hashmap_get(members, sg->sg_namp); |
9ab315cc LP |
340 | if (a) { |
341 | _cleanup_strv_free_ char **l = NULL; | |
342 | bool added = false; | |
343 | char **i; | |
344 | ||
345 | l = strv_copy(sg->sg_mem); | |
346 | if (!l) | |
347 | return -ENOMEM; | |
348 | ||
349 | STRV_FOREACH(i, a) { | |
350 | if (strv_find(l, *i)) | |
351 | continue; | |
352 | ||
353 | if (strv_extend(&l, *i) < 0) | |
354 | return -ENOMEM; | |
355 | ||
356 | added = true; | |
357 | } | |
358 | ||
359 | if (added) { | |
360 | struct sgrp t; | |
100d5f6e | 361 | int r; |
9ab315cc LP |
362 | |
363 | strv_uniq(l); | |
364 | strv_sort(l); | |
365 | ||
366 | t = *sg; | |
367 | t.sg_mem = l; | |
368 | ||
100d5f6e FB |
369 | r = putsgent_sane(&t, gshadow); |
370 | return r < 0 ? r : 1; | |
9ab315cc LP |
371 | } |
372 | } | |
373 | ||
100d5f6e | 374 | return putsgent_sane(sg, gshadow); |
9ab315cc | 375 | } |
b14e1b43 | 376 | #endif |
9ab315cc | 377 | |
7b1aaf66 | 378 | static const char* default_shell(uid_t uid) { |
6db90462 | 379 | return uid == 0 ? "/bin/sh" : NOLOGIN; |
7b1aaf66 ZJS |
380 | } |
381 | ||
b20b0b66 FB |
382 | static int write_temporary_passwd(const char *passwd_path, FILE **tmpfile, char **tmpfile_path) { |
383 | _cleanup_fclose_ FILE *original = NULL, *passwd = NULL; | |
1dd98a71 | 384 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL; |
563dc6f8 | 385 | struct passwd *pw = NULL; |
1b992147 LP |
386 | Item *i; |
387 | int r; | |
388 | ||
5bc9c980 | 389 | if (ordered_hashmap_size(todo_uids) == 0) |
b20b0b66 | 390 | return 0; |
1b992147 | 391 | |
b20b0b66 FB |
392 | r = fopen_temporary_label("/etc/passwd", passwd_path, &passwd, &passwd_tmp); |
393 | if (r < 0) | |
335f6ab4 | 394 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", passwd_path); |
b20b0b66 FB |
395 | |
396 | original = fopen(passwd_path, "re"); | |
397 | if (original) { | |
b20b0b66 | 398 | |
82855aa6 ZJS |
399 | /* Allow fallback path for when /proc is not mounted. On any normal system /proc will be |
400 | * mounted, but e.g. when 'dnf --installroot' is used, it might not be. There is no security | |
401 | * relevance here, since the environment is ultimately trusted, and not requiring /proc makes | |
402 | * it easier to depend on sysusers in packaging scripts and suchlike. */ | |
403 | r = copy_rights_with_fallback(fileno(original), fileno(passwd), passwd_tmp); | |
1b992147 | 404 | if (r < 0) |
335f6ab4 ZJS |
405 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
406 | passwd_path, passwd_tmp); | |
1b992147 | 407 | |
100d5f6e | 408 | while ((r = fgetpwent_sane(original, &pw)) > 0) { |
5bc9c980 | 409 | i = ordered_hashmap_get(users, pw->pw_name); |
330d1def ZJS |
410 | if (i && i->todo_user) |
411 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
412 | "%s: User \"%s\" already exists.", | |
413 | passwd_path, pw->pw_name); | |
e3c72c21 | 414 | |
330d1def ZJS |
415 | if (ordered_hashmap_contains(todo_uids, UID_TO_PTR(pw->pw_uid))) |
416 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
417 | "%s: Detected collision for UID " UID_FMT ".", | |
418 | passwd_path, pw->pw_uid); | |
b20b0b66 | 419 | |
563dc6f8 FB |
420 | /* Make sure we keep the NIS entries (if any) at the end. */ |
421 | if (IN_SET(pw->pw_name[0], '+', '-')) | |
422 | break; | |
423 | ||
100d5f6e FB |
424 | r = putpwent_sane(pw, passwd); |
425 | if (r < 0) | |
335f6ab4 ZJS |
426 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
427 | pw->pw_name); | |
b20b0b66 | 428 | } |
100d5f6e | 429 | if (r < 0) |
335f6ab4 | 430 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
1dd98a71 FB |
431 | |
432 | } else { | |
433 | if (errno != ENOENT) | |
335f6ab4 | 434 | return log_debug_errno(errno, "Failed to open %s: %m", passwd_path); |
1dd98a71 | 435 | if (fchmod(fileno(passwd), 0644) < 0) |
335f6ab4 | 436 | return log_debug_errno(errno, "Failed to fchmod %s: %m", passwd_tmp); |
b20b0b66 FB |
437 | } |
438 | ||
90e74a66 | 439 | ORDERED_HASHMAP_FOREACH(i, todo_uids) { |
99e9f896 LP |
440 | _cleanup_free_ char *creds_shell = NULL, *cn = NULL; |
441 | ||
b20b0b66 FB |
442 | struct passwd n = { |
443 | .pw_name = i->name, | |
444 | .pw_uid = i->uid, | |
445 | .pw_gid = i->gid, | |
446 | .pw_gecos = i->description, | |
1b992147 | 447 | |
b20b0b66 | 448 | /* "x" means the password is stored in the shadow file */ |
53c25ac9 | 449 | .pw_passwd = (char*) PASSWORD_SEE_SHADOW, |
a12b0cc3 | 450 | |
b20b0b66 | 451 | /* We default to the root directory as home */ |
636e72bc | 452 | .pw_dir = i->home ?: (char*) "/", |
1b992147 | 453 | |
b20b0b66 FB |
454 | /* Initialize the shell to nologin, with one exception: |
455 | * for root we patch in something special */ | |
7b1aaf66 | 456 | .pw_shell = i->shell ?: (char*) default_shell(i->uid), |
b20b0b66 | 457 | }; |
9ab315cc | 458 | |
99e9f896 LP |
459 | /* Try to pick up the shell for this account via the credentials logic */ |
460 | cn = strjoin("passwd.shell.", i->name); | |
461 | if (!cn) | |
462 | return -ENOMEM; | |
463 | ||
464 | r = read_credential(cn, (void**) &creds_shell, NULL); | |
465 | if (r < 0) | |
466 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
467 | else | |
468 | n.pw_shell = creds_shell; | |
469 | ||
100d5f6e FB |
470 | r = putpwent_sane(&n, passwd); |
471 | if (r < 0) | |
335f6ab4 ZJS |
472 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary passwd file: %m", |
473 | pw->pw_name); | |
b20b0b66 FB |
474 | } |
475 | ||
563dc6f8 FB |
476 | /* Append the remaining NIS entries if any */ |
477 | while (pw) { | |
100d5f6e FB |
478 | r = putpwent_sane(pw, passwd); |
479 | if (r < 0) | |
335f6ab4 ZJS |
480 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary passwd file: %m", |
481 | pw->pw_name); | |
563dc6f8 | 482 | |
100d5f6e FB |
483 | r = fgetpwent_sane(original, &pw); |
484 | if (r < 0) | |
335f6ab4 | 485 | return log_debug_errno(r, "Failed to read %s: %m", passwd_path); |
100d5f6e FB |
486 | if (r == 0) |
487 | break; | |
563dc6f8 | 488 | } |
563dc6f8 | 489 | |
b20b0b66 FB |
490 | r = fflush_and_check(passwd); |
491 | if (r < 0) | |
335f6ab4 | 492 | return log_debug_errno(r, "Failed to flush %s: %m", passwd_tmp); |
b20b0b66 | 493 | |
1cc6c93a YW |
494 | *tmpfile = TAKE_PTR(passwd); |
495 | *tmpfile_path = TAKE_PTR(passwd_tmp); | |
496 | ||
b20b0b66 | 497 | return 0; |
b20b0b66 FB |
498 | } |
499 | ||
500 | static int write_temporary_shadow(const char *shadow_path, FILE **tmpfile, char **tmpfile_path) { | |
501 | _cleanup_fclose_ FILE *original = NULL, *shadow = NULL; | |
1dd98a71 | 502 | _cleanup_(unlink_and_freep) char *shadow_tmp = NULL; |
19ec7de2 | 503 | struct spwd *sp = NULL; |
b20b0b66 FB |
504 | long lstchg; |
505 | Item *i; | |
506 | int r; | |
507 | ||
5bc9c980 | 508 | if (ordered_hashmap_size(todo_uids) == 0) |
b20b0b66 FB |
509 | return 0; |
510 | ||
511 | r = fopen_temporary_label("/etc/shadow", shadow_path, &shadow, &shadow_tmp); | |
512 | if (r < 0) | |
335f6ab4 | 513 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", shadow_path); |
9ab315cc | 514 | |
b20b0b66 FB |
515 | lstchg = (long) (now(CLOCK_REALTIME) / USEC_PER_DAY); |
516 | ||
517 | original = fopen(shadow_path, "re"); | |
518 | if (original) { | |
b20b0b66 | 519 | |
82855aa6 | 520 | r = copy_rights_with_fallback(fileno(original), fileno(shadow), shadow_tmp); |
9ab315cc | 521 | if (r < 0) |
335f6ab4 ZJS |
522 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
523 | shadow_path, shadow_tmp); | |
9ab315cc | 524 | |
100d5f6e | 525 | while ((r = fgetspent_sane(original, &sp)) > 0) { |
5bc9c980 | 526 | i = ordered_hashmap_get(users, sp->sp_namp); |
b20b0b66 FB |
527 | if (i && i->todo_user) { |
528 | /* we will update the existing entry */ | |
529 | sp->sp_lstchg = lstchg; | |
e3c72c21 | 530 | |
b20b0b66 FB |
531 | /* only the /etc/shadow stage is left, so we can |
532 | * safely remove the item from the todo set */ | |
533 | i->todo_user = false; | |
5bc9c980 | 534 | ordered_hashmap_remove(todo_uids, UID_TO_PTR(i->uid)); |
9ab315cc | 535 | } |
b20b0b66 | 536 | |
19ec7de2 FB |
537 | /* Make sure we keep the NIS entries (if any) at the end. */ |
538 | if (IN_SET(sp->sp_namp[0], '+', '-')) | |
539 | break; | |
540 | ||
100d5f6e FB |
541 | r = putspent_sane(sp, shadow); |
542 | if (r < 0) | |
335f6ab4 ZJS |
543 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
544 | sp->sp_namp); | |
545 | ||
b20b0b66 | 546 | } |
100d5f6e | 547 | if (r < 0) |
335f6ab4 | 548 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
1dd98a71 FB |
549 | |
550 | } else { | |
551 | if (errno != ENOENT) | |
335f6ab4 | 552 | return log_debug_errno(errno, "Failed to open %s: %m", shadow_path); |
1dd98a71 | 553 | if (fchmod(fileno(shadow), 0000) < 0) |
335f6ab4 | 554 | return log_debug_errno(errno, "Failed to fchmod %s: %m", shadow_tmp); |
b20b0b66 | 555 | } |
9ab315cc | 556 | |
90e74a66 | 557 | ORDERED_HASHMAP_FOREACH(i, todo_uids) { |
99e9f896 LP |
558 | _cleanup_(erase_and_freep) char *creds_password = NULL; |
559 | _cleanup_free_ char *cn = NULL; | |
560 | ||
b20b0b66 FB |
561 | struct spwd n = { |
562 | .sp_namp = i->name, | |
53c25ac9 | 563 | .sp_pwdp = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 FB |
564 | .sp_lstchg = lstchg, |
565 | .sp_min = -1, | |
566 | .sp_max = -1, | |
567 | .sp_warn = -1, | |
568 | .sp_inact = -1, | |
12c82937 | 569 | .sp_expire = -1, |
f5fbe71d | 570 | .sp_flag = ULONG_MAX, /* this appears to be what everybody does ... */ |
b20b0b66 | 571 | }; |
9ab315cc | 572 | |
99e9f896 LP |
573 | /* Try to pick up the password for this account via the credentials logic */ |
574 | cn = strjoin("passwd.hashed-password.", i->name); | |
575 | if (!cn) | |
576 | return -ENOMEM; | |
577 | ||
578 | r = read_credential(cn, (void**) &creds_password, NULL); | |
579 | if (r == -ENOENT) { | |
580 | _cleanup_(erase_and_freep) char *plaintext_password = NULL; | |
581 | ||
582 | free(cn); | |
583 | cn = strjoin("passwd.plaintext-password.", i->name); | |
584 | if (!cn) | |
585 | return -ENOMEM; | |
586 | ||
587 | r = read_credential(cn, (void**) &plaintext_password, NULL); | |
588 | if (r < 0) | |
589 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
590 | else { | |
591 | r = hash_password(plaintext_password, &creds_password); | |
592 | if (r < 0) | |
593 | return log_debug_errno(r, "Failed to hash password: %m"); | |
594 | } | |
595 | } else if (r < 0) | |
596 | log_debug_errno(r, "Couldn't read credential '%s', ignoring: %m", cn); | |
597 | ||
598 | if (creds_password) | |
599 | n.sp_pwdp = creds_password; | |
600 | ||
100d5f6e FB |
601 | r = putspent_sane(&n, shadow); |
602 | if (r < 0) | |
335f6ab4 ZJS |
603 | return log_debug_errno(r, "Failed to add new user \"%s\" to temporary shadow file: %m", |
604 | sp->sp_namp); | |
1b992147 | 605 | } |
19ec7de2 FB |
606 | |
607 | /* Append the remaining NIS entries if any */ | |
608 | while (sp) { | |
100d5f6e FB |
609 | r = putspent_sane(sp, shadow); |
610 | if (r < 0) | |
335f6ab4 ZJS |
611 | return log_debug_errno(r, "Failed to add existing user \"%s\" to temporary shadow file: %m", |
612 | sp->sp_namp); | |
19ec7de2 | 613 | |
100d5f6e FB |
614 | r = fgetspent_sane(original, &sp); |
615 | if (r < 0) | |
335f6ab4 | 616 | return log_debug_errno(r, "Failed to read %s: %m", shadow_path); |
100d5f6e FB |
617 | if (r == 0) |
618 | break; | |
19ec7de2 FB |
619 | } |
620 | if (!IN_SET(errno, 0, ENOENT)) | |
621 | return -errno; | |
1b992147 | 622 | |
0675e94a | 623 | r = fflush_sync_and_check(shadow); |
b20b0b66 | 624 | if (r < 0) |
335f6ab4 | 625 | return log_debug_errno(r, "Failed to flush %s: %m", shadow_tmp); |
b20b0b66 | 626 | |
1cc6c93a YW |
627 | *tmpfile = TAKE_PTR(shadow); |
628 | *tmpfile_path = TAKE_PTR(shadow_tmp); | |
629 | ||
b20b0b66 | 630 | return 0; |
b20b0b66 | 631 | } |
1b992147 | 632 | |
b20b0b66 FB |
633 | static int write_temporary_group(const char *group_path, FILE **tmpfile, char **tmpfile_path) { |
634 | _cleanup_fclose_ FILE *original = NULL, *group = NULL; | |
1dd98a71 | 635 | _cleanup_(unlink_and_freep) char *group_tmp = NULL; |
b20b0b66 | 636 | bool group_changed = false; |
563dc6f8 | 637 | struct group *gr = NULL; |
b20b0b66 FB |
638 | Item *i; |
639 | int r; | |
1b992147 | 640 | |
5bc9c980 | 641 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) |
b20b0b66 | 642 | return 0; |
e3c72c21 | 643 | |
b20b0b66 FB |
644 | r = fopen_temporary_label("/etc/group", group_path, &group, &group_tmp); |
645 | if (r < 0) | |
335f6ab4 | 646 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", group_path); |
b20b0b66 FB |
647 | |
648 | original = fopen(group_path, "re"); | |
649 | if (original) { | |
b20b0b66 | 650 | |
82855aa6 | 651 | r = copy_rights_with_fallback(fileno(original), fileno(group), group_tmp); |
b20b0b66 | 652 | if (r < 0) |
335f6ab4 ZJS |
653 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
654 | group_path, group_tmp); | |
b20b0b66 | 655 | |
100d5f6e | 656 | while ((r = fgetgrent_sane(original, &gr)) > 0) { |
b20b0b66 FB |
657 | /* Safety checks against name and GID collisions. Normally, |
658 | * this should be unnecessary, but given that we look at the | |
659 | * entries anyway here, let's make an extra verification | |
660 | * step that we don't generate duplicate entries. */ | |
661 | ||
5bc9c980 | 662 | i = ordered_hashmap_get(groups, gr->gr_name); |
330d1def ZJS |
663 | if (i && i->todo_group) |
664 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
665 | "%s: Group \"%s\" already exists.", | |
666 | group_path, gr->gr_name); | |
b20b0b66 | 667 | |
330d1def ZJS |
668 | if (ordered_hashmap_contains(todo_gids, GID_TO_PTR(gr->gr_gid))) |
669 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
670 | "%s: Detected collision for GID " GID_FMT ".", | |
671 | group_path, gr->gr_gid); | |
1b992147 | 672 | |
563dc6f8 FB |
673 | /* Make sure we keep the NIS entries (if any) at the end. */ |
674 | if (IN_SET(gr->gr_name[0], '+', '-')) | |
675 | break; | |
676 | ||
b20b0b66 FB |
677 | r = putgrent_with_members(gr, group); |
678 | if (r < 0) | |
335f6ab4 ZJS |
679 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
680 | gr->gr_name); | |
b20b0b66 FB |
681 | if (r > 0) |
682 | group_changed = true; | |
b20b0b66 | 683 | } |
100d5f6e | 684 | if (r < 0) |
335f6ab4 | 685 | return log_debug_errno(r, "Failed to read %s: %m", group_path); |
1dd98a71 FB |
686 | |
687 | } else { | |
688 | if (errno != ENOENT) | |
335f6ab4 | 689 | return log_debug_errno(errno, "Failed to open %s: %m", group_path); |
1dd98a71 | 690 | if (fchmod(fileno(group), 0644) < 0) |
335f6ab4 | 691 | return log_debug_errno(errno, "Failed to fchmod %s: %m", group_tmp); |
b20b0b66 | 692 | } |
7629889c | 693 | |
90e74a66 | 694 | ORDERED_HASHMAP_FOREACH(i, todo_gids) { |
b20b0b66 FB |
695 | struct group n = { |
696 | .gr_name = i->name, | |
697 | .gr_gid = i->gid, | |
53c25ac9 | 698 | .gr_passwd = (char*) PASSWORD_SEE_SHADOW, |
b20b0b66 | 699 | }; |
1b992147 | 700 | |
b20b0b66 FB |
701 | r = putgrent_with_members(&n, group); |
702 | if (r < 0) | |
335f6ab4 ZJS |
703 | return log_debug_errno(r, "Failed to add new group \"%s\" to temporary group file: %m", |
704 | gr->gr_name); | |
7629889c | 705 | |
b20b0b66 FB |
706 | group_changed = true; |
707 | } | |
1b992147 | 708 | |
563dc6f8 FB |
709 | /* Append the remaining NIS entries if any */ |
710 | while (gr) { | |
100d5f6e FB |
711 | r = putgrent_sane(gr, group); |
712 | if (r < 0) | |
335f6ab4 ZJS |
713 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary group file: %m", |
714 | gr->gr_name); | |
563dc6f8 | 715 | |
100d5f6e FB |
716 | r = fgetgrent_sane(original, &gr); |
717 | if (r < 0) | |
335f6ab4 | 718 | return log_debug_errno(r, "Failed to read %s: %m", group_path); |
100d5f6e FB |
719 | if (r == 0) |
720 | break; | |
563dc6f8 | 721 | } |
563dc6f8 | 722 | |
0675e94a | 723 | r = fflush_sync_and_check(group); |
b20b0b66 | 724 | if (r < 0) |
335f6ab4 | 725 | return log_debug_errno(r, "Failed to flush %s: %m", group_tmp); |
1b992147 | 726 | |
b20b0b66 | 727 | if (group_changed) { |
1cc6c93a YW |
728 | *tmpfile = TAKE_PTR(group); |
729 | *tmpfile_path = TAKE_PTR(group_tmp); | |
b20b0b66 FB |
730 | } |
731 | return 0; | |
b20b0b66 FB |
732 | } |
733 | ||
734 | static int write_temporary_gshadow(const char * gshadow_path, FILE **tmpfile, char **tmpfile_path) { | |
349cc4a5 | 735 | #if ENABLE_GSHADOW |
b20b0b66 | 736 | _cleanup_fclose_ FILE *original = NULL, *gshadow = NULL; |
1dd98a71 | 737 | _cleanup_(unlink_and_freep) char *gshadow_tmp = NULL; |
b20b0b66 | 738 | bool group_changed = false; |
b20b0b66 FB |
739 | Item *i; |
740 | int r; | |
741 | ||
5bc9c980 | 742 | if (ordered_hashmap_size(todo_gids) == 0 && ordered_hashmap_size(members) == 0) |
b20b0b66 FB |
743 | return 0; |
744 | ||
745 | r = fopen_temporary_label("/etc/gshadow", gshadow_path, &gshadow, &gshadow_tmp); | |
746 | if (r < 0) | |
335f6ab4 | 747 | return log_debug_errno(r, "Failed to open temporary copy of %s: %m", gshadow_path); |
9ab315cc | 748 | |
b20b0b66 FB |
749 | original = fopen(gshadow_path, "re"); |
750 | if (original) { | |
751 | struct sgrp *sg; | |
752 | ||
82855aa6 | 753 | r = copy_rights_with_fallback(fileno(original), fileno(gshadow), gshadow_tmp); |
1b992147 | 754 | if (r < 0) |
335f6ab4 ZJS |
755 | return log_debug_errno(r, "Failed to copy permissions from %s to %s: %m", |
756 | gshadow_path, gshadow_tmp); | |
9ab315cc | 757 | |
100d5f6e | 758 | while ((r = fgetsgent_sane(original, &sg)) > 0) { |
c5abf225 | 759 | |
5bc9c980 | 760 | i = ordered_hashmap_get(groups, sg->sg_namp); |
330d1def ZJS |
761 | if (i && i->todo_group) |
762 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), | |
763 | "%s: Group \"%s\" already exists.", | |
764 | gshadow_path, sg->sg_namp); | |
9ab315cc | 765 | |
b20b0b66 | 766 | r = putsgent_with_members(sg, gshadow); |
fff19499 | 767 | if (r < 0) |
335f6ab4 ZJS |
768 | return log_debug_errno(r, "Failed to add existing group \"%s\" to temporary gshadow file: %m", |
769 | sg->sg_namp); | |
b20b0b66 FB |
770 | if (r > 0) |
771 | group_changed = true; | |
b20b0b66 | 772 | } |
100d5f6e FB |
773 | if (r < 0) |
774 | return r; | |
1dd98a71 FB |
775 | |
776 | } else { | |
777 | if (errno != ENOENT) | |
335f6ab4 | 778 | return log_debug_errno(errno, "Failed to open %s: %m", gshadow_path); |
1dd98a71 | 779 | if (fchmod(fileno(gshadow), 0000) < 0) |
335f6ab4 | 780 | return log_debug_errno(errno, "Failed to fchmod %s: %m", gshadow_tmp); |
b20b0b66 | 781 | } |
9ab315cc | 782 | |
90e74a66 | 783 | ORDERED_HASHMAP_FOREACH(i, todo_gids) { |
b20b0b66 FB |
784 | struct sgrp n = { |
785 | .sg_namp = i->name, | |
53c25ac9 | 786 | .sg_passwd = (char*) PASSWORD_LOCKED_AND_INVALID, |
b20b0b66 | 787 | }; |
9ab315cc | 788 | |
b20b0b66 | 789 | r = putsgent_with_members(&n, gshadow); |
9ab315cc | 790 | if (r < 0) |
335f6ab4 ZJS |
791 | return log_debug_errno(r, "Failed to add new group \"%s\" to temporary gshadow file: %m", |
792 | n.sg_namp); | |
b20b0b66 FB |
793 | |
794 | group_changed = true; | |
9ab315cc LP |
795 | } |
796 | ||
0675e94a | 797 | r = fflush_sync_and_check(gshadow); |
b20b0b66 | 798 | if (r < 0) |
335f6ab4 | 799 | return log_debug_errno(r, "Failed to flush %s: %m", gshadow_tmp); |
b20b0b66 | 800 | |
9ab315cc | 801 | if (group_changed) { |
1cc6c93a YW |
802 | *tmpfile = TAKE_PTR(gshadow); |
803 | *tmpfile_path = TAKE_PTR(gshadow_tmp); | |
b20b0b66 | 804 | } |
b14e1b43 | 805 | #endif |
62d1c93a | 806 | return 0; |
b20b0b66 FB |
807 | } |
808 | ||
809 | static int write_files(void) { | |
b20b0b66 | 810 | _cleanup_fclose_ FILE *passwd = NULL, *group = NULL, *shadow = NULL, *gshadow = NULL; |
1dd98a71 | 811 | _cleanup_(unlink_and_freep) char *passwd_tmp = NULL, *group_tmp = NULL, *shadow_tmp = NULL, *gshadow_tmp = NULL; |
62d1c93a | 812 | const char *passwd_path, *shadow_path, *group_path, *gshadow_path; |
b20b0b66 FB |
813 | int r; |
814 | ||
815 | passwd_path = prefix_roota(arg_root, "/etc/passwd"); | |
816 | shadow_path = prefix_roota(arg_root, "/etc/shadow"); | |
817 | group_path = prefix_roota(arg_root, "/etc/group"); | |
818 | gshadow_path = prefix_roota(arg_root, "/etc/gshadow"); | |
819 | ||
820 | r = write_temporary_group(group_path, &group, &group_tmp); | |
821 | if (r < 0) | |
1dd98a71 | 822 | return r; |
b20b0b66 FB |
823 | |
824 | r = write_temporary_gshadow(gshadow_path, &gshadow, &gshadow_tmp); | |
825 | if (r < 0) | |
1dd98a71 | 826 | return r; |
b20b0b66 FB |
827 | |
828 | r = write_temporary_passwd(passwd_path, &passwd, &passwd_tmp); | |
829 | if (r < 0) | |
1dd98a71 | 830 | return r; |
b20b0b66 FB |
831 | |
832 | r = write_temporary_shadow(shadow_path, &shadow, &shadow_tmp); | |
833 | if (r < 0) | |
1dd98a71 | 834 | return r; |
b20b0b66 FB |
835 | |
836 | /* Make a backup of the old files */ | |
837 | if (group) { | |
838 | r = make_backup("/etc/group", group_path); | |
839 | if (r < 0) | |
335f6ab4 | 840 | return log_debug_errno(r, "Failed to make backup %s: %m", group_path); |
b20b0b66 FB |
841 | } |
842 | if (gshadow) { | |
843 | r = make_backup("/etc/gshadow", gshadow_path); | |
844 | if (r < 0) | |
335f6ab4 | 845 | return log_debug_errno(r, "Failed to make backup %s: %m", gshadow_path); |
1b992147 LP |
846 | } |
847 | ||
848 | if (passwd) { | |
9f1c1940 | 849 | r = make_backup("/etc/passwd", passwd_path); |
1b992147 | 850 | if (r < 0) |
335f6ab4 | 851 | return log_debug_errno(r, "Failed to make backup %s: %m", passwd_path); |
1b992147 | 852 | } |
9ab315cc LP |
853 | if (shadow) { |
854 | r = make_backup("/etc/shadow", shadow_path); | |
855 | if (r < 0) | |
335f6ab4 | 856 | return log_debug_errno(r, "Failed to make backup %s: %m", shadow_path); |
9ab315cc | 857 | } |
1b992147 LP |
858 | |
859 | /* And make the new files count */ | |
b20b0b66 | 860 | if (group) { |
2da3dc69 | 861 | r = rename_and_apply_smack_floor_label(group_tmp, group_path); |
b20b0b66 | 862 | if (r < 0) |
335f6ab4 ZJS |
863 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
864 | group_tmp, group_path); | |
b20b0b66 | 865 | group_tmp = mfree(group_tmp); |
d481b830 FB |
866 | |
867 | if (!arg_root && !arg_image) | |
868 | (void) nscd_flush_cache(STRV_MAKE("group")); | |
b20b0b66 FB |
869 | } |
870 | if (gshadow) { | |
2da3dc69 | 871 | r = rename_and_apply_smack_floor_label(gshadow_tmp, gshadow_path); |
b20b0b66 | 872 | if (r < 0) |
335f6ab4 ZJS |
873 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
874 | gshadow_tmp, gshadow_path); | |
1b992147 | 875 | |
b20b0b66 | 876 | gshadow_tmp = mfree(gshadow_tmp); |
1b992147 LP |
877 | } |
878 | ||
879 | if (passwd) { | |
2da3dc69 | 880 | r = rename_and_apply_smack_floor_label(passwd_tmp, passwd_path); |
c02e7b1e | 881 | if (r < 0) |
335f6ab4 ZJS |
882 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
883 | passwd_tmp, passwd_path); | |
1b992147 | 884 | |
97b11eed | 885 | passwd_tmp = mfree(passwd_tmp); |
d481b830 FB |
886 | |
887 | if (!arg_root && !arg_image) | |
888 | (void) nscd_flush_cache(STRV_MAKE("passwd")); | |
1b992147 | 889 | } |
9ab315cc | 890 | if (shadow) { |
2da3dc69 | 891 | r = rename_and_apply_smack_floor_label(shadow_tmp, shadow_path); |
c02e7b1e | 892 | if (r < 0) |
335f6ab4 ZJS |
893 | return log_debug_errno(r, "Failed to rename %s to %s: %m", |
894 | shadow_tmp, shadow_path); | |
9ab315cc | 895 | |
97b11eed | 896 | shadow_tmp = mfree(shadow_tmp); |
9ab315cc | 897 | } |
1b992147 | 898 | |
1dd98a71 | 899 | return 0; |
1b992147 LP |
900 | } |
901 | ||
b9ee05c2 | 902 | static int uid_is_ok(uid_t uid, const char *name, bool check_with_gid) { |
1b992147 LP |
903 | |
904 | /* Let's see if we already have assigned the UID a second time */ | |
5bc9c980 | 905 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(uid))) |
1b992147 LP |
906 | return 0; |
907 | ||
908 | /* Try to avoid using uids that are already used by a group | |
909 | * that doesn't have the same name as our new user. */ | |
b9ee05c2 | 910 | if (check_with_gid) { |
62d1c93a ZJS |
911 | Item *i; |
912 | ||
b9ee05c2 MV |
913 | i = ordered_hashmap_get(todo_gids, GID_TO_PTR(uid)); |
914 | if (i && !streq(i->name, name)) | |
915 | return 0; | |
916 | } | |
1b992147 LP |
917 | |
918 | /* Let's check the files directly */ | |
71da1673 | 919 | if (hashmap_contains(database_by_uid, UID_TO_PTR(uid))) |
1b992147 LP |
920 | return 0; |
921 | ||
b9ee05c2 | 922 | if (check_with_gid) { |
62d1c93a ZJS |
923 | const char *n; |
924 | ||
71da1673 | 925 | n = hashmap_get(database_by_gid, GID_TO_PTR(uid)); |
b9ee05c2 MV |
926 | if (n && !streq(n, name)) |
927 | return 0; | |
928 | } | |
1b992147 LP |
929 | |
930 | /* Let's also check via NSS, to avoid UID clashes over LDAP and such, just in case */ | |
931 | if (!arg_root) { | |
62d1c93a ZJS |
932 | struct passwd *p; |
933 | struct group *g; | |
934 | ||
1b992147 LP |
935 | errno = 0; |
936 | p = getpwuid(uid); | |
937 | if (p) | |
938 | return 0; | |
b0284aba | 939 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
940 | return -errno; |
941 | ||
b9ee05c2 MV |
942 | if (check_with_gid) { |
943 | errno = 0; | |
944 | g = getgrgid((gid_t) uid); | |
945 | if (g) { | |
946 | if (!streq(g->gr_name, name)) | |
947 | return 0; | |
948 | } else if (!IN_SET(errno, 0, ENOENT)) | |
949 | return -errno; | |
950 | } | |
1b992147 LP |
951 | } |
952 | ||
953 | return 1; | |
954 | } | |
955 | ||
956 | static int root_stat(const char *p, struct stat *st) { | |
957 | const char *fix; | |
958 | ||
1d13f648 | 959 | fix = prefix_roota(arg_root, p); |
1b992147 LP |
960 | if (stat(fix, st) < 0) |
961 | return -errno; | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
966 | static int read_id_from_file(Item *i, uid_t *_uid, gid_t *_gid) { | |
967 | struct stat st; | |
968 | bool found_uid = false, found_gid = false; | |
56d21cde PDS |
969 | uid_t uid = 0; |
970 | gid_t gid = 0; | |
1b992147 LP |
971 | |
972 | assert(i); | |
973 | ||
974 | /* First, try to get the gid directly */ | |
975 | if (_gid && i->gid_path && root_stat(i->gid_path, &st) >= 0) { | |
976 | gid = st.st_gid; | |
977 | found_gid = true; | |
978 | } | |
979 | ||
980 | /* Then, try to get the uid directly */ | |
981 | if ((_uid || (_gid && !found_gid)) | |
982 | && i->uid_path | |
983 | && root_stat(i->uid_path, &st) >= 0) { | |
984 | ||
985 | uid = st.st_uid; | |
986 | found_uid = true; | |
987 | ||
988 | /* If we need the gid, but had no success yet, also derive it from the uid path */ | |
989 | if (_gid && !found_gid) { | |
990 | gid = st.st_gid; | |
991 | found_gid = true; | |
992 | } | |
993 | } | |
994 | ||
995 | /* If that didn't work yet, then let's reuse the gid as uid */ | |
996 | if (_uid && !found_uid && i->gid_path) { | |
997 | ||
998 | if (found_gid) { | |
999 | uid = (uid_t) gid; | |
1000 | found_uid = true; | |
1001 | } else if (root_stat(i->gid_path, &st) >= 0) { | |
1002 | uid = (uid_t) st.st_gid; | |
1003 | found_uid = true; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | if (_uid) { | |
1008 | if (!found_uid) | |
1009 | return 0; | |
1010 | ||
1011 | *_uid = uid; | |
1012 | } | |
1013 | ||
1014 | if (_gid) { | |
1015 | if (!found_gid) | |
1016 | return 0; | |
1017 | ||
1018 | *_gid = gid; | |
1019 | } | |
1020 | ||
1021 | return 1; | |
1022 | } | |
1023 | ||
1024 | static int add_user(Item *i) { | |
1025 | void *z; | |
1026 | int r; | |
1027 | ||
1028 | assert(i); | |
1029 | ||
1030 | /* Check the database directly */ | |
71da1673 | 1031 | z = hashmap_get(database_by_username, i->name); |
1b992147 LP |
1032 | if (z) { |
1033 | log_debug("User %s already exists.", i->name); | |
c1b6b04f | 1034 | i->uid = PTR_TO_UID(z); |
1b992147 LP |
1035 | i->uid_set = true; |
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | if (!arg_root) { | |
1040 | struct passwd *p; | |
1b992147 LP |
1041 | |
1042 | /* Also check NSS */ | |
1043 | errno = 0; | |
1044 | p = getpwnam(i->name); | |
1045 | if (p) { | |
1046 | log_debug("User %s already exists.", i->name); | |
1047 | i->uid = p->pw_uid; | |
1048 | i->uid_set = true; | |
1049 | ||
2fc09a9c DM |
1050 | r = free_and_strdup(&i->description, p->pw_gecos); |
1051 | if (r < 0) | |
1052 | return log_oom(); | |
1053 | ||
1b992147 LP |
1054 | return 0; |
1055 | } | |
08c7c321 | 1056 | if (!errno_is_not_exists(errno)) |
4a62c710 | 1057 | return log_error_errno(errno, "Failed to check if user %s already exists: %m", i->name); |
1b992147 LP |
1058 | } |
1059 | ||
1060 | /* Try to use the suggested numeric uid */ | |
1061 | if (i->uid_set) { | |
b9ee05c2 | 1062 | r = uid_is_ok(i->uid, i->name, !i->id_set_strict); |
f647962d MS |
1063 | if (r < 0) |
1064 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
1065 | if (r == 0) { |
1066 | log_debug("Suggested user ID " UID_FMT " for %s already used.", i->uid, i->name); | |
1067 | i->uid_set = false; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | /* If that didn't work, try to read it from the specified path */ | |
1072 | if (!i->uid_set) { | |
1073 | uid_t c; | |
1074 | ||
1075 | if (read_id_from_file(i, &c, NULL) > 0) { | |
1076 | ||
8530dc44 | 1077 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1078 | log_debug("User ID " UID_FMT " of file not suitable for %s.", c, i->name); |
1079 | else { | |
b9ee05c2 | 1080 | r = uid_is_ok(c, i->name, true); |
f647962d MS |
1081 | if (r < 0) |
1082 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1083 | else if (r > 0) { | |
1b992147 LP |
1084 | i->uid = c; |
1085 | i->uid_set = true; | |
1086 | } else | |
1087 | log_debug("User ID " UID_FMT " of file for %s is already used.", c, i->name); | |
1088 | } | |
1089 | } | |
1090 | } | |
1091 | ||
b938cb90 | 1092 | /* Otherwise, try to reuse the group ID */ |
1b992147 | 1093 | if (!i->uid_set && i->gid_set) { |
b9ee05c2 | 1094 | r = uid_is_ok((uid_t) i->gid, i->name, true); |
f647962d MS |
1095 | if (r < 0) |
1096 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1b992147 LP |
1097 | if (r > 0) { |
1098 | i->uid = (uid_t) i->gid; | |
1099 | i->uid_set = true; | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | /* And if that didn't work either, let's try to find a free one */ | |
1104 | if (!i->uid_set) { | |
4b6f9b20 ZJS |
1105 | maybe_emit_login_defs_warning(); |
1106 | ||
8530dc44 LP |
1107 | for (;;) { |
1108 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
330d1def ZJS |
1109 | if (r < 0) |
1110 | return log_error_errno(r, "No free user ID available for %s.", i->name); | |
1b992147 | 1111 | |
b9ee05c2 | 1112 | r = uid_is_ok(search_uid, i->name, true); |
f647962d MS |
1113 | if (r < 0) |
1114 | return log_error_errno(r, "Failed to verify uid " UID_FMT ": %m", i->uid); | |
1115 | else if (r > 0) | |
1b992147 LP |
1116 | break; |
1117 | } | |
1118 | ||
1b992147 LP |
1119 | i->uid_set = true; |
1120 | i->uid = search_uid; | |
1b992147 LP |
1121 | } |
1122 | ||
1dfb9321 SS |
1123 | r = ordered_hashmap_ensure_put(&todo_uids, NULL, UID_TO_PTR(i->uid), i); |
1124 | if (r == -EEXIST) | |
1125 | return log_error_errno(r, "Requested user %s with uid " UID_FMT " and gid" GID_FMT " to be created is duplicated " | |
1126 | "or conflicts with another user.", i->name, i->uid, i->gid); | |
1127 | if (r == -ENOMEM) | |
1b992147 | 1128 | return log_oom(); |
1b992147 | 1129 | if (r < 0) |
1dfb9321 SS |
1130 | return log_error_errno(r, "Failed to store user %s with uid " UID_FMT " and gid " GID_FMT " to be created: %m", |
1131 | i->name, i->uid, i->gid); | |
1b992147 | 1132 | |
c1b6b04f | 1133 | i->todo_user = true; |
62d1c93a ZJS |
1134 | log_info("Creating user %s (%s) with uid " UID_FMT " and gid " GID_FMT ".", |
1135 | i->name, strna(i->description), i->uid, i->gid); | |
1b992147 LP |
1136 | |
1137 | return 0; | |
1138 | } | |
1139 | ||
1140 | static int gid_is_ok(gid_t gid) { | |
1141 | struct group *g; | |
1142 | struct passwd *p; | |
1143 | ||
5bc9c980 | 1144 | if (ordered_hashmap_get(todo_gids, GID_TO_PTR(gid))) |
1b992147 LP |
1145 | return 0; |
1146 | ||
1147 | /* Avoid reusing gids that are already used by a different user */ | |
5bc9c980 | 1148 | if (ordered_hashmap_get(todo_uids, UID_TO_PTR(gid))) |
1b992147 LP |
1149 | return 0; |
1150 | ||
71da1673 | 1151 | if (hashmap_contains(database_by_gid, GID_TO_PTR(gid))) |
1b992147 LP |
1152 | return 0; |
1153 | ||
71da1673 | 1154 | if (hashmap_contains(database_by_uid, UID_TO_PTR(gid))) |
1b992147 LP |
1155 | return 0; |
1156 | ||
1157 | if (!arg_root) { | |
1158 | errno = 0; | |
1159 | g = getgrgid(gid); | |
1160 | if (g) | |
1161 | return 0; | |
b0284aba | 1162 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1163 | return -errno; |
1164 | ||
1165 | errno = 0; | |
1166 | p = getpwuid((uid_t) gid); | |
1167 | if (p) | |
1168 | return 0; | |
b0284aba | 1169 | if (!IN_SET(errno, 0, ENOENT)) |
1b992147 LP |
1170 | return -errno; |
1171 | } | |
1172 | ||
1173 | return 1; | |
1174 | } | |
1175 | ||
649916d3 | 1176 | static int get_gid_by_name(const char *name, gid_t *gid) { |
1b992147 | 1177 | void *z; |
1b992147 | 1178 | |
649916d3 | 1179 | assert(gid); |
1b992147 LP |
1180 | |
1181 | /* Check the database directly */ | |
649916d3 | 1182 | z = hashmap_get(database_by_groupname, name); |
1b992147 | 1183 | if (z) { |
649916d3 | 1184 | *gid = PTR_TO_GID(z); |
1b992147 LP |
1185 | return 0; |
1186 | } | |
1187 | ||
1188 | /* Also check NSS */ | |
1189 | if (!arg_root) { | |
1190 | struct group *g; | |
1191 | ||
1192 | errno = 0; | |
649916d3 | 1193 | g = getgrnam(name); |
1b992147 | 1194 | if (g) { |
649916d3 | 1195 | *gid = g->gr_gid; |
1b992147 LP |
1196 | return 0; |
1197 | } | |
08c7c321 | 1198 | if (!errno_is_not_exists(errno)) |
649916d3 DM |
1199 | return log_error_errno(errno, "Failed to check if group %s already exists: %m", name); |
1200 | } | |
1201 | ||
1202 | return -ENOENT; | |
1203 | } | |
1204 | ||
1205 | static int add_group(Item *i) { | |
1206 | int r; | |
1207 | ||
1208 | assert(i); | |
1209 | ||
1210 | r = get_gid_by_name(i->name, &i->gid); | |
1211 | if (r != -ENOENT) { | |
1212 | if (r < 0) | |
1213 | return r; | |
1214 | log_debug("Group %s already exists.", i->name); | |
1215 | i->gid_set = true; | |
1216 | return 0; | |
1b992147 LP |
1217 | } |
1218 | ||
1219 | /* Try to use the suggested numeric gid */ | |
1220 | if (i->gid_set) { | |
1221 | r = gid_is_ok(i->gid); | |
f647962d MS |
1222 | if (r < 0) |
1223 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
b9ee05c2 | 1224 | if (i->id_set_strict) { |
28e7fad7 MV |
1225 | /* If we require the gid to already exist we can return here: |
1226 | * r > 0: means the gid does not exist -> fail | |
1227 | * r == 0: means the gid exists -> nothing more to do. | |
1228 | */ | |
baaa35ad ZJS |
1229 | if (r > 0) |
1230 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1231 | "Failed to create %s: please create GID %d", | |
1232 | i->name, i->gid); | |
28e7fad7 MV |
1233 | if (r == 0) |
1234 | return 0; | |
1235 | } | |
1b992147 LP |
1236 | if (r == 0) { |
1237 | log_debug("Suggested group ID " GID_FMT " for %s already used.", i->gid, i->name); | |
1238 | i->gid_set = false; | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | /* Try to reuse the numeric uid, if there's one */ | |
1243 | if (!i->gid_set && i->uid_set) { | |
1244 | r = gid_is_ok((gid_t) i->uid); | |
f647962d MS |
1245 | if (r < 0) |
1246 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1b992147 LP |
1247 | if (r > 0) { |
1248 | i->gid = (gid_t) i->uid; | |
1249 | i->gid_set = true; | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | /* If that didn't work, try to read it from the specified path */ | |
1254 | if (!i->gid_set) { | |
1255 | gid_t c; | |
1256 | ||
1257 | if (read_id_from_file(i, NULL, &c) > 0) { | |
1258 | ||
8530dc44 | 1259 | if (c <= 0 || !uid_range_contains(uid_range, n_uid_range, c)) |
1b992147 LP |
1260 | log_debug("Group ID " GID_FMT " of file not suitable for %s.", c, i->name); |
1261 | else { | |
1262 | r = gid_is_ok(c); | |
f647962d MS |
1263 | if (r < 0) |
1264 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1265 | else if (r > 0) { | |
1b992147 LP |
1266 | i->gid = c; |
1267 | i->gid_set = true; | |
1268 | } else | |
1269 | log_debug("Group ID " GID_FMT " of file for %s already used.", c, i->name); | |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | ||
1274 | /* And if that didn't work either, let's try to find a free one */ | |
1275 | if (!i->gid_set) { | |
4b6f9b20 ZJS |
1276 | maybe_emit_login_defs_warning(); |
1277 | ||
8530dc44 LP |
1278 | for (;;) { |
1279 | /* We look for new GIDs in the UID pool! */ | |
1280 | r = uid_range_next_lower(uid_range, n_uid_range, &search_uid); | |
330d1def ZJS |
1281 | if (r < 0) |
1282 | return log_error_errno(r, "No free group ID available for %s.", i->name); | |
8530dc44 LP |
1283 | |
1284 | r = gid_is_ok(search_uid); | |
f647962d MS |
1285 | if (r < 0) |
1286 | return log_error_errno(r, "Failed to verify gid " GID_FMT ": %m", i->gid); | |
1287 | else if (r > 0) | |
1b992147 LP |
1288 | break; |
1289 | } | |
1290 | ||
1b992147 | 1291 | i->gid_set = true; |
8530dc44 | 1292 | i->gid = search_uid; |
1b992147 LP |
1293 | } |
1294 | ||
1dfb9321 SS |
1295 | r = ordered_hashmap_ensure_put(&todo_gids, NULL, GID_TO_PTR(i->gid), i); |
1296 | if (r == -EEXIST) | |
1297 | 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); | |
1298 | if (r == -ENOMEM) | |
1b992147 | 1299 | return log_oom(); |
1b992147 | 1300 | if (r < 0) |
1dfb9321 | 1301 | return log_error_errno(r, "Failed to store group %s with gid " GID_FMT " to be created: %m", i->name, i->gid); |
1b992147 | 1302 | |
c1b6b04f | 1303 | i->todo_group = true; |
1b992147 LP |
1304 | log_info("Creating group %s with gid " GID_FMT ".", i->name, i->gid); |
1305 | ||
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | static int process_item(Item *i) { | |
1310 | int r; | |
1311 | ||
1312 | assert(i); | |
1313 | ||
1314 | switch (i->type) { | |
1315 | ||
b5327d0a YW |
1316 | case ADD_USER: { |
1317 | Item *j; | |
1318 | ||
649916d3 | 1319 | j = ordered_hashmap_get(groups, i->group_name ?: i->name); |
b5327d0a | 1320 | if (j && j->todo_group) { |
649916d3 | 1321 | /* When a group with the target name is already in queue, |
b5327d0a YW |
1322 | * use the information about the group and do not create |
1323 | * duplicated group entry. */ | |
1324 | i->gid_set = j->gid_set; | |
1325 | i->gid = j->gid; | |
1326 | i->id_set_strict = true; | |
649916d3 DM |
1327 | } else if (i->group_name) { |
1328 | /* When a group name was given instead of a GID and it's | |
1329 | * not in queue, then it must already exist. */ | |
1330 | r = get_gid_by_name(i->group_name, &i->gid); | |
1331 | if (r < 0) | |
1332 | return log_error_errno(r, "Group %s not found.", i->group_name); | |
1333 | i->gid_set = true; | |
1334 | i->id_set_strict = true; | |
b5327d0a YW |
1335 | } else { |
1336 | r = add_group(i); | |
1337 | if (r < 0) | |
1338 | return r; | |
1339 | } | |
1b992147 LP |
1340 | |
1341 | return add_user(i); | |
b5327d0a | 1342 | } |
1b992147 | 1343 | |
e2c2060f | 1344 | case ADD_GROUP: |
1b992147 | 1345 | return add_group(i); |
1b992147 | 1346 | |
a12b0cc3 LP |
1347 | default: |
1348 | assert_not_reached("Unknown item type"); | |
1349 | } | |
1b992147 LP |
1350 | } |
1351 | ||
71da1673 | 1352 | static Item* item_free(Item *i) { |
1b992147 | 1353 | if (!i) |
71da1673 | 1354 | return NULL; |
1b992147 LP |
1355 | |
1356 | free(i->name); | |
649916d3 | 1357 | free(i->group_name); |
1b992147 LP |
1358 | free(i->uid_path); |
1359 | free(i->gid_path); | |
1360 | free(i->description); | |
d9b8ea54 | 1361 | free(i->home); |
7b1aaf66 | 1362 | free(i->shell); |
71da1673 | 1363 | return mfree(i); |
1b992147 LP |
1364 | } |
1365 | ||
1366 | DEFINE_TRIVIAL_CLEANUP_FUNC(Item*, item_free); | |
71da1673 | 1367 | DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(item_hash_ops, char, string_hash_func, string_compare_func, Item, item_free); |
1b992147 | 1368 | |
a12b0cc3 LP |
1369 | static int add_implicit(void) { |
1370 | char *g, **l; | |
a12b0cc3 LP |
1371 | int r; |
1372 | ||
1373 | /* Implicitly create additional users and groups, if they were listed in "m" lines */ | |
90e74a66 | 1374 | ORDERED_HASHMAP_FOREACH_KEY(l, g, members) { |
a12b0cc3 LP |
1375 | char **m; |
1376 | ||
d4f0412d YW |
1377 | STRV_FOREACH(m, l) |
1378 | if (!ordered_hashmap_get(users, *m)) { | |
a12b0cc3 LP |
1379 | _cleanup_(item_freep) Item *j = NULL; |
1380 | ||
a12b0cc3 LP |
1381 | j = new0(Item, 1); |
1382 | if (!j) | |
1383 | return log_oom(); | |
1384 | ||
1385 | j->type = ADD_USER; | |
1386 | j->name = strdup(*m); | |
1387 | if (!j->name) | |
1388 | return log_oom(); | |
1389 | ||
f334deba SS |
1390 | r = ordered_hashmap_ensure_put(&users, &item_hash_ops, j->name, j); |
1391 | if (r == -ENOMEM) | |
a12b0cc3 | 1392 | return log_oom(); |
f334deba SS |
1393 | if (r < 0) |
1394 | return log_error_errno(r, "Failed to add implicit user '%s': %m", j->name); | |
a12b0cc3 LP |
1395 | |
1396 | log_debug("Adding implicit user '%s' due to m line", j->name); | |
f334deba | 1397 | TAKE_PTR(j); |
a12b0cc3 | 1398 | } |
d4f0412d YW |
1399 | |
1400 | if (!(ordered_hashmap_get(users, g) || | |
1401 | ordered_hashmap_get(groups, g))) { | |
1402 | _cleanup_(item_freep) Item *j = NULL; | |
1403 | ||
d4f0412d YW |
1404 | j = new0(Item, 1); |
1405 | if (!j) | |
1406 | return log_oom(); | |
1407 | ||
1408 | j->type = ADD_GROUP; | |
1409 | j->name = strdup(g); | |
1410 | if (!j->name) | |
1411 | return log_oom(); | |
1412 | ||
f334deba SS |
1413 | r = ordered_hashmap_ensure_put(&groups, &item_hash_ops, j->name, j); |
1414 | if (r == -ENOMEM) | |
d4f0412d | 1415 | return log_oom(); |
f334deba SS |
1416 | if (r < 0) |
1417 | return log_error_errno(r, "Failed to add implicit group '%s': %m", j->name); | |
d4f0412d YW |
1418 | |
1419 | log_debug("Adding implicit group '%s' due to m line", j->name); | |
f334deba | 1420 | TAKE_PTR(j); |
a12b0cc3 LP |
1421 | } |
1422 | } | |
1423 | ||
1424 | return 0; | |
1425 | } | |
1426 | ||
1b992147 LP |
1427 | static bool item_equal(Item *a, Item *b) { |
1428 | assert(a); | |
1429 | assert(b); | |
1430 | ||
1431 | if (a->type != b->type) | |
1432 | return false; | |
1433 | ||
1434 | if (!streq_ptr(a->name, b->name)) | |
1435 | return false; | |
1436 | ||
1437 | if (!streq_ptr(a->uid_path, b->uid_path)) | |
1438 | return false; | |
1439 | ||
1440 | if (!streq_ptr(a->gid_path, b->gid_path)) | |
1441 | return false; | |
1442 | ||
1443 | if (!streq_ptr(a->description, b->description)) | |
1444 | return false; | |
1445 | ||
1446 | if (a->uid_set != b->uid_set) | |
1447 | return false; | |
1448 | ||
1449 | if (a->uid_set && a->uid != b->uid) | |
1450 | return false; | |
1451 | ||
1452 | if (a->gid_set != b->gid_set) | |
1453 | return false; | |
1454 | ||
1455 | if (a->gid_set && a->gid != b->gid) | |
1456 | return false; | |
1457 | ||
7629889c LP |
1458 | if (!streq_ptr(a->home, b->home)) |
1459 | return false; | |
1460 | ||
7b1aaf66 ZJS |
1461 | if (!streq_ptr(a->shell, b->shell)) |
1462 | return false; | |
1463 | ||
1b992147 LP |
1464 | return true; |
1465 | } | |
1466 | ||
1b992147 LP |
1467 | static int parse_line(const char *fname, unsigned line, const char *buffer) { |
1468 | ||
7b1aaf66 ZJS |
1469 | _cleanup_free_ char *action = NULL, |
1470 | *name = NULL, *resolved_name = NULL, | |
1471 | *id = NULL, *resolved_id = NULL, | |
b8bed700 YW |
1472 | *description = NULL, *resolved_description = NULL, |
1473 | *home = NULL, *resolved_home = NULL, | |
71fb1588 | 1474 | *shell = NULL, *resolved_shell = NULL; |
1b992147 LP |
1475 | _cleanup_(item_freep) Item *i = NULL; |
1476 | Item *existing; | |
5bc9c980 | 1477 | OrderedHashmap *h; |
7629889c LP |
1478 | int r; |
1479 | const char *p; | |
1b992147 LP |
1480 | |
1481 | assert(fname); | |
1482 | assert(line >= 1); | |
1483 | assert(buffer); | |
1484 | ||
7629889c LP |
1485 | /* Parse columns */ |
1486 | p = buffer; | |
4ec85141 | 1487 | r = extract_many_words(&p, NULL, EXTRACT_UNQUOTE, |
7b1aaf66 | 1488 | &action, &name, &id, &description, &home, &shell, NULL); |
330d1def ZJS |
1489 | if (r < 0) |
1490 | return log_error_errno(r, "[%s:%u] Syntax error.", fname, line); | |
1491 | if (r < 2) | |
1492 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1493 | "[%s:%u] Missing action and name columns.", fname, line); | |
1494 | if (!isempty(p)) | |
1495 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1496 | "[%s:%u] Trailing garbage.", fname, line); | |
1b992147 | 1497 | |
7629889c | 1498 | /* Verify action */ |
330d1def ZJS |
1499 | if (strlen(action) != 1) |
1500 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1501 | "[%s:%u] Unknown modifier '%s'", fname, line, action); | |
1b992147 | 1502 | |
330d1def ZJS |
1503 | if (!IN_SET(action[0], ADD_USER, ADD_GROUP, ADD_MEMBER, ADD_RANGE)) |
1504 | return log_error_errno(SYNTHETIC_ERRNO(EBADMSG), | |
1505 | "[%s:%u] Unknown command type '%c'.", fname, line, action[0]); | |
1b992147 | 1506 | |
7629889c | 1507 | /* Verify name */ |
e7b88b7b | 1508 | if (empty_or_dash(name)) |
97b11eed | 1509 | name = mfree(name); |
1b992147 | 1510 | |
8530dc44 | 1511 | if (name) { |
2caed041 | 1512 | r = specifier_printf(name, NAME_MAX, system_and_tmp_specifier_table, NULL, &resolved_name); |
330d1def | 1513 | if (r < 0) |
0f7e4b28 | 1514 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", fname, line, name); |
8530dc44 | 1515 | |
7a8867ab | 1516 | if (!valid_user_group_name(resolved_name, 0)) |
330d1def ZJS |
1517 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1518 | "[%s:%u] '%s' is not a valid user or group name.", | |
1519 | fname, line, resolved_name); | |
1b992147 LP |
1520 | } |
1521 | ||
8530dc44 | 1522 | /* Verify id */ |
e7b88b7b | 1523 | if (empty_or_dash(id)) |
97b11eed | 1524 | id = mfree(id); |
7629889c | 1525 | |
8530dc44 | 1526 | if (id) { |
2caed041 | 1527 | r = specifier_printf(id, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &resolved_id); |
330d1def | 1528 | if (r < 0) |
0f7e4b28 | 1529 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1530 | fname, line, name); |
8530dc44 LP |
1531 | } |
1532 | ||
1533 | /* Verify description */ | |
e7b88b7b | 1534 | if (empty_or_dash(description)) |
97b11eed | 1535 | description = mfree(description); |
1b992147 | 1536 | |
8530dc44 | 1537 | if (description) { |
2caed041 | 1538 | r = specifier_printf(description, LONG_LINE_MAX, system_and_tmp_specifier_table, NULL, &resolved_description); |
330d1def | 1539 | if (r < 0) |
0f7e4b28 | 1540 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1541 | fname, line, description); |
b8bed700 | 1542 | |
330d1def ZJS |
1543 | if (!valid_gecos(resolved_description)) |
1544 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1545 | "[%s:%u] '%s' is not a valid GECOS field.", | |
1546 | fname, line, resolved_description); | |
8530dc44 LP |
1547 | } |
1548 | ||
1549 | /* Verify home */ | |
e7b88b7b | 1550 | if (empty_or_dash(home)) |
97b11eed | 1551 | home = mfree(home); |
1b992147 | 1552 | |
8530dc44 | 1553 | if (home) { |
2caed041 | 1554 | r = specifier_printf(home, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &resolved_home); |
330d1def | 1555 | if (r < 0) |
0f7e4b28 | 1556 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1557 | fname, line, home); |
b8bed700 | 1558 | |
330d1def ZJS |
1559 | if (!valid_home(resolved_home)) |
1560 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1561 | "[%s:%u] '%s' is not a valid home directory field.", | |
1562 | fname, line, resolved_home); | |
8530dc44 LP |
1563 | } |
1564 | ||
7b1aaf66 | 1565 | /* Verify shell */ |
e7b88b7b | 1566 | if (empty_or_dash(shell)) |
7b1aaf66 ZJS |
1567 | shell = mfree(shell); |
1568 | ||
1569 | if (shell) { | |
2caed041 | 1570 | r = specifier_printf(shell, PATH_MAX-1, system_and_tmp_specifier_table, NULL, &resolved_shell); |
330d1def | 1571 | if (r < 0) |
0f7e4b28 | 1572 | return log_error_errno(r, "[%s:%u] Failed to replace specifiers in '%s': %m", |
330d1def | 1573 | fname, line, shell); |
7b1aaf66 | 1574 | |
330d1def ZJS |
1575 | if (!valid_shell(resolved_shell)) |
1576 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1577 | "[%s:%u] '%s' is not a valid login shell field.", | |
1578 | fname, line, resolved_shell); | |
7b1aaf66 ZJS |
1579 | } |
1580 | ||
a12b0cc3 | 1581 | switch (action[0]) { |
1b992147 | 1582 | |
8530dc44 | 1583 | case ADD_RANGE: |
330d1def ZJS |
1584 | if (resolved_name) |
1585 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1586 | "[%s:%u] Lines of type 'r' don't take a name field.", | |
1587 | fname, line); | |
1588 | ||
1589 | if (!resolved_id) | |
1590 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1591 | "[%s:%u] Lines of type 'r' require a ID range in the third field.", | |
1592 | fname, line); | |
1593 | ||
1594 | if (description || home || shell) | |
1595 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1596 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1597 | fname, line, action[0], | |
1598 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1599 | |
8530dc44 | 1600 | r = uid_range_add_str(&uid_range, &n_uid_range, resolved_id); |
330d1def ZJS |
1601 | if (r < 0) |
1602 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1603 | "[%s:%u] Invalid UID range %s.", fname, line, resolved_id); | |
1b992147 | 1604 | |
8530dc44 LP |
1605 | return 0; |
1606 | ||
1607 | case ADD_MEMBER: { | |
8530dc44 | 1608 | /* Try to extend an existing member or group item */ |
330d1def ZJS |
1609 | if (!name) |
1610 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1611 | "[%s:%u] Lines of type 'm' require a user name in the second field.", | |
1612 | fname, line); | |
1613 | ||
1614 | if (!resolved_id) | |
1615 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1616 | "[%s:%u] Lines of type 'm' require a group name in the third field.", | |
1617 | fname, line); | |
1618 | ||
7a8867ab | 1619 | if (!valid_user_group_name(resolved_id, 0)) |
330d1def ZJS |
1620 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
1621 | "[%s:%u] '%s' is not a valid user or group name.", | |
1622 | fname, line, resolved_id); | |
1623 | ||
1624 | if (description || home || shell) | |
1625 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1626 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1627 | fname, line, action[0], | |
1628 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
8530dc44 | 1629 | |
cde79109 | 1630 | r = string_strv_ordered_hashmap_put(&members, resolved_id, resolved_name); |
7629889c | 1631 | if (r < 0) |
cde79109 | 1632 | return log_error_errno(r, "Failed to store mapping for %s: %m", resolved_id); |
a12b0cc3 LP |
1633 | |
1634 | return 0; | |
1b992147 LP |
1635 | } |
1636 | ||
a12b0cc3 | 1637 | case ADD_USER: |
330d1def ZJS |
1638 | if (!name) |
1639 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1640 | "[%s:%u] Lines of type 'u' require a user name in the second field.", | |
1641 | fname, line); | |
8530dc44 | 1642 | |
71da1673 | 1643 | r = ordered_hashmap_ensure_allocated(&users, &item_hash_ops); |
a12b0cc3 LP |
1644 | if (r < 0) |
1645 | return log_oom(); | |
1646 | ||
1647 | i = new0(Item, 1); | |
1648 | if (!i) | |
1649 | return log_oom(); | |
1650 | ||
8530dc44 LP |
1651 | if (resolved_id) { |
1652 | if (path_is_absolute(resolved_id)) { | |
1cc6c93a | 1653 | i->uid_path = TAKE_PTR(resolved_id); |
4ff361cc | 1654 | path_simplify(i->uid_path); |
a12b0cc3 | 1655 | } else { |
4cb41413 MV |
1656 | _cleanup_free_ char *uid = NULL, *gid = NULL; |
1657 | if (split_pair(resolved_id, ":", &uid, &gid) == 0) { | |
1658 | r = parse_gid(gid, &i->gid); | |
649916d3 | 1659 | if (r < 0) { |
7a8867ab | 1660 | if (valid_user_group_name(gid, 0)) |
649916d3 DM |
1661 | i->group_name = TAKE_PTR(gid); |
1662 | else | |
1663 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
1664 | } else { | |
1665 | i->gid_set = true; | |
1666 | i->id_set_strict = true; | |
1667 | } | |
4cb41413 | 1668 | free_and_replace(resolved_id, uid); |
a12b0cc3 | 1669 | } |
1825c909 MV |
1670 | if (!streq(resolved_id, "-")) { |
1671 | r = parse_uid(resolved_id, &i->uid); | |
1672 | if (r < 0) | |
1673 | return log_error_errno(r, "Failed to parse UID: '%s': %m", id); | |
1674 | i->uid_set = true; | |
1675 | } | |
a12b0cc3 LP |
1676 | } |
1677 | } | |
1678 | ||
b8bed700 YW |
1679 | i->description = TAKE_PTR(resolved_description); |
1680 | i->home = TAKE_PTR(resolved_home); | |
1cc6c93a | 1681 | i->shell = TAKE_PTR(resolved_shell); |
7b1aaf66 | 1682 | |
1b992147 | 1683 | h = users; |
a12b0cc3 LP |
1684 | break; |
1685 | ||
1686 | case ADD_GROUP: | |
330d1def ZJS |
1687 | if (!name) |
1688 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1689 | "[%s:%u] Lines of type 'g' require a user name in the second field.", | |
1690 | fname, line); | |
a12b0cc3 | 1691 | |
330d1def ZJS |
1692 | if (description || home || shell) |
1693 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1694 | "[%s:%u] Lines of type '%c' don't take a %s field.", | |
1695 | fname, line, action[0], | |
1696 | description ? "GECOS" : home ? "home directory" : "login shell"); | |
7629889c | 1697 | |
71da1673 | 1698 | r = ordered_hashmap_ensure_allocated(&groups, &item_hash_ops); |
7629889c LP |
1699 | if (r < 0) |
1700 | return log_oom(); | |
1701 | ||
a12b0cc3 LP |
1702 | i = new0(Item, 1); |
1703 | if (!i) | |
1704 | return log_oom(); | |
1705 | ||
8530dc44 LP |
1706 | if (resolved_id) { |
1707 | if (path_is_absolute(resolved_id)) { | |
1cc6c93a | 1708 | i->gid_path = TAKE_PTR(resolved_id); |
4ff361cc | 1709 | path_simplify(i->gid_path); |
a12b0cc3 | 1710 | } else { |
8530dc44 | 1711 | r = parse_gid(resolved_id, &i->gid); |
4cb41413 MV |
1712 | if (r < 0) |
1713 | return log_error_errno(r, "Failed to parse GID: '%s': %m", id); | |
a12b0cc3 LP |
1714 | |
1715 | i->gid_set = true; | |
1716 | } | |
1717 | } | |
1718 | ||
1b992147 | 1719 | h = groups; |
a12b0cc3 | 1720 | break; |
8530dc44 | 1721 | |
bce415ed RC |
1722 | default: |
1723 | return -EBADMSG; | |
1b992147 | 1724 | } |
a12b0cc3 LP |
1725 | |
1726 | i->type = action[0]; | |
1cc6c93a | 1727 | i->name = TAKE_PTR(resolved_name); |
1b992147 | 1728 | |
5bc9c980 | 1729 | existing = ordered_hashmap_get(h, i->name); |
1b992147 | 1730 | if (existing) { |
1b992147 LP |
1731 | /* Two identical items are fine */ |
1732 | if (!item_equal(existing, i)) | |
1733 | log_warning("Two or more conflicting lines for %s configured, ignoring.", i->name); | |
1734 | ||
1735 | return 0; | |
1736 | } | |
1737 | ||
5bc9c980 | 1738 | r = ordered_hashmap_put(h, i->name, i); |
a12b0cc3 LP |
1739 | if (r < 0) |
1740 | return log_oom(); | |
1b992147 LP |
1741 | |
1742 | i = NULL; | |
1743 | return 0; | |
1744 | } | |
1745 | ||
1746 | static int read_config_file(const char *fn, bool ignore_enoent) { | |
dfc87cbf | 1747 | _cleanup_fclose_ FILE *rf = NULL; |
2708160c | 1748 | _cleanup_free_ char *pp = NULL; |
dfc87cbf | 1749 | FILE *f = NULL; |
1b992147 | 1750 | unsigned v = 0; |
c4640902 | 1751 | int r = 0; |
1b992147 LP |
1752 | |
1753 | assert(fn); | |
1754 | ||
dfc87cbf LP |
1755 | if (streq(fn, "-")) |
1756 | f = stdin; | |
1757 | else { | |
2708160c | 1758 | r = search_and_fopen(fn, "re", arg_root, (const char**) CONF_PATHS_STRV("sysusers.d"), &rf, &pp); |
dfc87cbf LP |
1759 | if (r < 0) { |
1760 | if (ignore_enoent && r == -ENOENT) | |
1761 | return 0; | |
1b992147 | 1762 | |
8d3d7072 | 1763 | return log_error_errno(r, "Failed to open '%s', ignoring: %m", fn); |
dfc87cbf LP |
1764 | } |
1765 | ||
1766 | f = rf; | |
2708160c | 1767 | fn = pp; |
1b992147 LP |
1768 | } |
1769 | ||
050ca299 LP |
1770 | for (;;) { |
1771 | _cleanup_free_ char *line = NULL; | |
1b992147 LP |
1772 | char *l; |
1773 | int k; | |
1774 | ||
050ca299 LP |
1775 | k = read_line(f, LONG_LINE_MAX, &line); |
1776 | if (k < 0) | |
1777 | return log_error_errno(k, "Failed to read '%s': %m", fn); | |
1778 | if (k == 0) | |
1779 | break; | |
1780 | ||
1b992147 LP |
1781 | v++; |
1782 | ||
1783 | l = strstrip(line); | |
4c701096 | 1784 | if (IN_SET(*l, 0, '#')) |
1b992147 LP |
1785 | continue; |
1786 | ||
1787 | k = parse_line(fn, v, l); | |
1788 | if (k < 0 && r == 0) | |
1789 | r = k; | |
1790 | } | |
1791 | ||
1792 | if (ferror(f)) { | |
56f64d95 | 1793 | log_error_errno(errno, "Failed to read from file %s: %m", fn); |
1b992147 LP |
1794 | if (r == 0) |
1795 | r = -EIO; | |
1796 | } | |
1797 | ||
1798 | return r; | |
1799 | } | |
1800 | ||
ec0327d6 ZJS |
1801 | static int cat_config(void) { |
1802 | _cleanup_strv_free_ char **files = NULL; | |
ec0327d6 ZJS |
1803 | int r; |
1804 | ||
a826d4f7 | 1805 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, NULL); |
ec0327d6 ZJS |
1806 | if (r < 0) |
1807 | return r; | |
1808 | ||
0221d68a | 1809 | (void) pager_open(arg_pager_flags); |
dcd5c891 | 1810 | |
ec0327d6 ZJS |
1811 | return cat_files(NULL, files, 0); |
1812 | } | |
1813 | ||
37ec0fdd LP |
1814 | static int help(void) { |
1815 | _cleanup_free_ char *link = NULL; | |
1816 | int r; | |
1817 | ||
1818 | r = terminal_urlify_man("systemd-sysusers.service", "8", &link); | |
1819 | if (r < 0) | |
1820 | return log_oom(); | |
1821 | ||
1b992147 LP |
1822 | printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n" |
1823 | "Creates system user accounts.\n\n" | |
1824 | " -h --help Show this help\n" | |
1825 | " --version Show package version\n" | |
ec0327d6 | 1826 | " --cat-config Show configuration files\n" |
601185b4 | 1827 | " --root=PATH Operate on an alternate filesystem root\n" |
0c3ee127 | 1828 | " --image=PATH Operate on disk image as filesystem root\n" |
d16a1c1b | 1829 | " --replace=PATH Treat arguments as replacement for PATH\n" |
1b600bd5 | 1830 | " --inline Treat arguments as configuration lines\n" |
dcd5c891 | 1831 | " --no-pager Do not pipe output into a pager\n" |
bc556335 DDM |
1832 | "\nSee the %s for details.\n", |
1833 | program_invocation_short_name, | |
1834 | link); | |
37ec0fdd LP |
1835 | |
1836 | return 0; | |
1b992147 LP |
1837 | } |
1838 | ||
1839 | static int parse_argv(int argc, char *argv[]) { | |
1840 | ||
1841 | enum { | |
1842 | ARG_VERSION = 0x100, | |
ec0327d6 | 1843 | ARG_CAT_CONFIG, |
1b992147 | 1844 | ARG_ROOT, |
0c3ee127 | 1845 | ARG_IMAGE, |
d16a1c1b | 1846 | ARG_REPLACE, |
1b600bd5 | 1847 | ARG_INLINE, |
dcd5c891 | 1848 | ARG_NO_PAGER, |
1b992147 LP |
1849 | }; |
1850 | ||
1851 | static const struct option options[] = { | |
ec0327d6 ZJS |
1852 | { "help", no_argument, NULL, 'h' }, |
1853 | { "version", no_argument, NULL, ARG_VERSION }, | |
1854 | { "cat-config", no_argument, NULL, ARG_CAT_CONFIG }, | |
1855 | { "root", required_argument, NULL, ARG_ROOT }, | |
0c3ee127 | 1856 | { "image", required_argument, NULL, ARG_IMAGE }, |
ec0327d6 ZJS |
1857 | { "replace", required_argument, NULL, ARG_REPLACE }, |
1858 | { "inline", no_argument, NULL, ARG_INLINE }, | |
dcd5c891 | 1859 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, |
1b992147 LP |
1860 | {} |
1861 | }; | |
1862 | ||
0f474365 | 1863 | int c, r; |
1b992147 LP |
1864 | |
1865 | assert(argc >= 0); | |
1866 | assert(argv); | |
1867 | ||
601185b4 | 1868 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
1b992147 LP |
1869 | |
1870 | switch (c) { | |
1871 | ||
1872 | case 'h': | |
37ec0fdd | 1873 | return help(); |
1b992147 LP |
1874 | |
1875 | case ARG_VERSION: | |
3f6fd1ba | 1876 | return version(); |
1b992147 | 1877 | |
ec0327d6 ZJS |
1878 | case ARG_CAT_CONFIG: |
1879 | arg_cat_config = true; | |
1880 | break; | |
1881 | ||
1b992147 | 1882 | case ARG_ROOT: |
614b022c | 1883 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_root); |
0f474365 | 1884 | if (r < 0) |
0f03c2a4 | 1885 | return r; |
1b992147 LP |
1886 | break; |
1887 | ||
0c3ee127 | 1888 | case ARG_IMAGE: |
3537577c ZJS |
1889 | #ifdef STANDALONE |
1890 | return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
1891 | "This systemd-sysusers version is compiled without support for --image=."); | |
1892 | #else | |
614b022c | 1893 | r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image); |
0c3ee127 LP |
1894 | if (r < 0) |
1895 | return r; | |
1896 | break; | |
3537577c | 1897 | #endif |
0c3ee127 | 1898 | |
d16a1c1b ZJS |
1899 | case ARG_REPLACE: |
1900 | if (!path_is_absolute(optarg) || | |
baaa35ad ZJS |
1901 | !endswith(optarg, ".conf")) |
1902 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1903 | "The argument to --replace= must an absolute path to a config file"); | |
d16a1c1b ZJS |
1904 | |
1905 | arg_replace = optarg; | |
1906 | break; | |
1907 | ||
1b600bd5 ZJS |
1908 | case ARG_INLINE: |
1909 | arg_inline = true; | |
1910 | break; | |
1911 | ||
dcd5c891 | 1912 | case ARG_NO_PAGER: |
0221d68a | 1913 | arg_pager_flags |= PAGER_DISABLE; |
dcd5c891 LP |
1914 | break; |
1915 | ||
1b992147 LP |
1916 | case '?': |
1917 | return -EINVAL; | |
1918 | ||
1919 | default: | |
1920 | assert_not_reached("Unhandled option"); | |
1921 | } | |
1b992147 | 1922 | |
baaa35ad ZJS |
1923 | if (arg_replace && arg_cat_config) |
1924 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1925 | "Option --replace= is not supported with --cat-config"); | |
ec0327d6 | 1926 | |
baaa35ad ZJS |
1927 | if (arg_replace && optind >= argc) |
1928 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
1929 | "When --replace= is given, some configuration items must be specified"); | |
d16a1c1b | 1930 | |
0c3ee127 LP |
1931 | if (arg_image && arg_root) |
1932 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported."); | |
1933 | ||
1b992147 LP |
1934 | return 1; |
1935 | } | |
1936 | ||
d16a1c1b ZJS |
1937 | static int parse_arguments(char **args) { |
1938 | char **arg; | |
1939 | unsigned pos = 1; | |
1940 | int r; | |
1941 | ||
1942 | STRV_FOREACH(arg, args) { | |
1943 | if (arg_inline) | |
1944 | /* Use (argument):n, where n==1 for the first positional arg */ | |
1945 | r = parse_line("(argument)", pos, *arg); | |
1946 | else | |
1947 | r = read_config_file(*arg, false); | |
1948 | if (r < 0) | |
1949 | return r; | |
1950 | ||
1951 | pos++; | |
1952 | } | |
1953 | ||
1954 | return 0; | |
1955 | } | |
1956 | ||
ec0327d6 | 1957 | static int read_config_files(char **args) { |
d16a1c1b ZJS |
1958 | _cleanup_strv_free_ char **files = NULL; |
1959 | _cleanup_free_ char *p = NULL; | |
1960 | char **f; | |
1961 | int r; | |
1962 | ||
a826d4f7 | 1963 | r = conf_files_list_with_replacement(arg_root, CONF_PATHS_STRV("sysusers.d"), arg_replace, &files, &p); |
d16a1c1b | 1964 | if (r < 0) |
ec0327d6 | 1965 | return r; |
d16a1c1b ZJS |
1966 | |
1967 | STRV_FOREACH(f, files) | |
1968 | if (p && path_equal(*f, p)) { | |
1969 | log_debug("Parsing arguments at position \"%s\"…", *f); | |
1970 | ||
1971 | r = parse_arguments(args); | |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | } else { | |
1975 | log_debug("Reading config file \"%s\"…", *f); | |
1976 | ||
1977 | /* Just warn, ignore result otherwise */ | |
1978 | (void) read_config_file(*f, true); | |
1979 | } | |
1980 | ||
1981 | return 0; | |
1982 | } | |
1983 | ||
71da1673 | 1984 | static int run(int argc, char *argv[]) { |
3537577c | 1985 | #ifndef STANDALONE |
0c3ee127 LP |
1986 | _cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL; |
1987 | _cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL; | |
1988 | _cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL; | |
3537577c | 1989 | #endif |
1b992147 | 1990 | _cleanup_close_ int lock = -1; |
1b992147 | 1991 | Item *i; |
dd2fd972 | 1992 | int r; |
1b992147 LP |
1993 | |
1994 | r = parse_argv(argc, argv); | |
1995 | if (r <= 0) | |
71da1673 | 1996 | return r; |
1b992147 | 1997 | |
d2acb93d | 1998 | log_setup(); |
1b992147 | 1999 | |
71da1673 YW |
2000 | if (arg_cat_config) |
2001 | return cat_config(); | |
ec0327d6 | 2002 | |
1b992147 LP |
2003 | umask(0022); |
2004 | ||
c3dacc8b | 2005 | r = mac_selinux_init(); |
71da1673 | 2006 | if (r < 0) |
a9ba0e32 | 2007 | return r; |
1b992147 | 2008 | |
3537577c | 2009 | #ifndef STANDALONE |
0c3ee127 LP |
2010 | if (arg_image) { |
2011 | assert(!arg_root); | |
2012 | ||
2013 | r = mount_image_privately_interactively( | |
2014 | arg_image, | |
4b5de5dd LP |
2015 | DISSECT_IMAGE_GENERIC_ROOT | |
2016 | DISSECT_IMAGE_REQUIRE_ROOT | | |
2017 | DISSECT_IMAGE_VALIDATE_OS | | |
2018 | DISSECT_IMAGE_RELAX_VAR_CHECK | | |
c65f854a LP |
2019 | DISSECT_IMAGE_FSCK | |
2020 | DISSECT_IMAGE_GROWFS, | |
0c3ee127 LP |
2021 | &unlink_dir, |
2022 | &loop_device, | |
2023 | &decrypted_image); | |
2024 | if (r < 0) | |
2025 | return r; | |
2026 | ||
2027 | arg_root = strdup(unlink_dir); | |
2028 | if (!arg_root) | |
2029 | return log_oom(); | |
2030 | } | |
3537577c ZJS |
2031 | #else |
2032 | assert(!arg_image); | |
2033 | #endif | |
0c3ee127 | 2034 | |
d16a1c1b ZJS |
2035 | /* If command line arguments are specified along with --replace, read all |
2036 | * configuration files and insert the positional arguments at the specified | |
2037 | * place. Otherwise, if command line arguments are specified, execute just | |
2038 | * them, and finally, without --replace= or any positional arguments, just | |
2039 | * read configuration and execute it. | |
2040 | */ | |
2041 | if (arg_replace || optind >= argc) | |
ec0327d6 | 2042 | r = read_config_files(argv + optind); |
d16a1c1b ZJS |
2043 | else |
2044 | r = parse_arguments(argv + optind); | |
2045 | if (r < 0) | |
71da1673 | 2046 | return r; |
1b992147 | 2047 | |
fe102d6a LP |
2048 | /* Let's tell nss-systemd not to synthesize the "root" and "nobody" entries for it, so that our detection |
2049 | * whether the names or UID/GID area already used otherwise doesn't get confused. After all, even though | |
2050 | * nss-systemd synthesizes these users/groups, they should still appear in /etc/passwd and /etc/group, as the | |
2051 | * synthesizing logic is merely supposed to be fallback for cases where we run with a completely unpopulated | |
2052 | * /etc. */ | |
71da1673 YW |
2053 | if (setenv("SYSTEMD_NSS_BYPASS_SYNTHETIC", "1", 1) < 0) |
2054 | return log_error_errno(errno, "Failed to set SYSTEMD_NSS_BYPASS_SYNTHETIC environment variable: %m"); | |
fe102d6a | 2055 | |
8530dc44 | 2056 | if (!uid_range) { |
aa25270c | 2057 | /* Default to default range of SYSTEMD_UID_MIN..SYSTEM_UID_MAX. */ |
4b6f9b20 | 2058 | r = read_login_defs(&login_defs, NULL, arg_root); |
71da1673 | 2059 | if (r < 0) |
aa25270c ZJS |
2060 | return log_error_errno(r, "Failed to read %s%s: %m", |
2061 | strempty(arg_root), "/etc/login.defs"); | |
2062 | ||
4b6f9b20 ZJS |
2063 | login_defs_need_warning = true; |
2064 | ||
aa25270c ZJS |
2065 | /* We pick a range that very conservative: we look at compiled-in maximum and the value in |
2066 | * /etc/login.defs. That way the uids/gids which we allocate will be interpreted correctly, | |
2067 | * even if /etc/login.defs is removed later. (The bottom bound doesn't matter much, since | |
2068 | * it's only used during allocation, so we use the configured value directly). */ | |
4b6f9b20 ZJS |
2069 | uid_t begin = login_defs.system_alloc_uid_min, |
2070 | end = MIN3((uid_t) SYSTEM_UID_MAX, login_defs.system_uid_max, login_defs.system_gid_max); | |
aa25270c ZJS |
2071 | if (begin < end) { |
2072 | r = uid_range_add(&uid_range, &n_uid_range, begin, end - begin + 1); | |
2073 | if (r < 0) | |
2074 | return log_oom(); | |
2075 | } | |
8530dc44 LP |
2076 | } |
2077 | ||
a12b0cc3 LP |
2078 | r = add_implicit(); |
2079 | if (r < 0) | |
71da1673 | 2080 | return r; |
a12b0cc3 | 2081 | |
e929bee0 | 2082 | lock = take_etc_passwd_lock(arg_root); |
71da1673 YW |
2083 | if (lock < 0) |
2084 | return log_error_errno(lock, "Failed to take /etc/passwd lock: %m"); | |
1b992147 LP |
2085 | |
2086 | r = load_user_database(); | |
71da1673 YW |
2087 | if (r < 0) |
2088 | return log_error_errno(r, "Failed to load user database: %m"); | |
1b992147 LP |
2089 | |
2090 | r = load_group_database(); | |
71da1673 YW |
2091 | if (r < 0) |
2092 | return log_error_errno(r, "Failed to read group database: %m"); | |
1b992147 | 2093 | |
90e74a66 | 2094 | ORDERED_HASHMAP_FOREACH(i, groups) |
c1a32819 | 2095 | (void) process_item(i); |
1b992147 | 2096 | |
90e74a66 | 2097 | ORDERED_HASHMAP_FOREACH(i, users) |
c1a32819 | 2098 | (void) process_item(i); |
1b992147 LP |
2099 | |
2100 | r = write_files(); | |
2101 | if (r < 0) | |
71da1673 | 2102 | return log_error_errno(r, "Failed to write files: %m"); |
1b992147 | 2103 | |
71da1673 | 2104 | return 0; |
1b992147 | 2105 | } |
71da1673 YW |
2106 | |
2107 | DEFINE_MAIN_FUNCTION(run); |