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70a5db58 LP |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
3 | #include <stddef.h> | |
4 | #include <sys/mount.h> | |
5 | ||
6 | #include "chown-recursive.h" | |
7 | #include "copy.h" | |
8 | #include "fd-util.h" | |
9 | #include "fileio.h" | |
1dfe5de0 | 10 | #include "fs-util.h" |
70a5db58 LP |
11 | #include "home-util.h" |
12 | #include "homework-cifs.h" | |
13 | #include "homework-directory.h" | |
7b78db28 | 14 | #include "homework-fido2.h" |
70a5db58 LP |
15 | #include "homework-fscrypt.h" |
16 | #include "homework-luks.h" | |
17 | #include "homework-mount.h" | |
18 | #include "homework-pkcs11.h" | |
19 | #include "homework.h" | |
20 | #include "main-func.h" | |
21 | #include "memory-util.h" | |
22 | #include "missing_magic.h" | |
23 | #include "mount-util.h" | |
24 | #include "path-util.h" | |
70a5db58 LP |
25 | #include "rm-rf.h" |
26 | #include "stat-util.h" | |
27 | #include "strv.h" | |
28 | #include "tmpfile-util.h" | |
29 | #include "user-util.h" | |
30 | #include "virt.h" | |
31 | ||
32 | /* Make sure a bad password always results in a 3s delay, no matter what */ | |
33 | #define BAD_PASSWORD_DELAY_USEC (3 * USEC_PER_SEC) | |
34 | ||
7b78db28 LP |
35 | void password_cache_free(PasswordCache *cache) { |
36 | if (!cache) | |
37 | return; | |
38 | ||
39 | cache->pkcs11_passwords = strv_free_erase(cache->pkcs11_passwords); | |
40 | cache->fido2_passwords = strv_free_erase(cache->fido2_passwords); | |
41 | } | |
42 | ||
70a5db58 LP |
43 | int user_record_authenticate( |
44 | UserRecord *h, | |
45 | UserRecord *secret, | |
7b78db28 | 46 | PasswordCache *cache, |
c8f145ad | 47 | bool strict_verify) { |
70a5db58 | 48 | |
7b78db28 LP |
49 | bool need_password = false, need_token = false, need_pin = false, need_protected_authentication_path_permitted = false, need_user_presence_permitted = false, |
50 | pin_locked = false, pin_incorrect = false, pin_incorrect_few_tries_left = false, pin_incorrect_one_try_left = false, token_action_timeout = false; | |
70a5db58 LP |
51 | int r; |
52 | ||
53 | assert(h); | |
54 | assert(secret); | |
55 | ||
56 | /* Tries to authenticate a user record with the supplied secrets. i.e. checks whether at least one | |
57 | * supplied plaintext passwords matches a hashed password field of the user record. Or if a | |
7b78db28 | 58 | * configured PKCS#11 or FIDO2 token is around and can unlock the record. |
70a5db58 | 59 | * |
7b78db28 LP |
60 | * Note that the 'cache' parameter is both an input and output parameter: it contains lists of |
61 | * configured, decrypted PKCS#11/FIDO2 passwords. We typically have to call this function multiple | |
62 | * times over the course of an operation (think: on login we authenticate the host user record, the | |
63 | * record embedded in the LUKS record and the one embedded in $HOME). Hence we keep a list of | |
64 | * passwords we already decrypted, so that we don't have to do the (slow and potentially interactive) | |
65 | * PKCS#11/FIDO2 dance for the relevant token again and again. */ | |
70a5db58 LP |
66 | |
67 | /* First, let's see if the supplied plain-text passwords work? */ | |
68 | r = user_record_test_secret(h, secret); | |
69 | if (r == -ENOKEY) { | |
70 | log_info_errno(r, "None of the supplied plaintext passwords unlocks the user record's hashed passwords."); | |
71 | need_password = true; | |
72 | } else if (r == -ENXIO) | |
73 | log_debug_errno(r, "User record has no hashed passwords, plaintext passwords not tested."); | |
74 | else if (r < 0) | |
75 | return log_error_errno(r, "Failed to validate password of record: %m"); | |
76 | else { | |
77 | log_info("Provided password unlocks user record."); | |
c8f145ad | 78 | return 1; |
70a5db58 LP |
79 | } |
80 | ||
7b78db28 | 81 | /* Second, test cached PKCS#11 passwords */ |
3aeea37d | 82 | for (size_t n = 0; n < h->n_pkcs11_encrypted_key; n++) { |
70a5db58 LP |
83 | char **pp; |
84 | ||
7b78db28 LP |
85 | STRV_FOREACH(pp, cache->pkcs11_passwords) { |
86 | r = test_password_one(h->pkcs11_encrypted_key[n].hashed_password, *pp); | |
70a5db58 LP |
87 | if (r < 0) |
88 | return log_error_errno(r, "Failed to check supplied PKCS#11 password: %m"); | |
89 | if (r > 0) { | |
90 | log_info("Previously acquired PKCS#11 password unlocks user record."); | |
c8f145ad | 91 | return 1; |
70a5db58 LP |
92 | } |
93 | } | |
7b78db28 LP |
94 | } |
95 | ||
96 | /* Third, test cached FIDO2 passwords */ | |
97 | for (size_t n = 0; n < h->n_fido2_hmac_salt; n++) { | |
98 | char **pp; | |
99 | ||
100 | /* See if any of the previously calculated passwords work */ | |
101 | STRV_FOREACH(pp, cache->fido2_passwords) { | |
102 | r = test_password_one(h->fido2_hmac_salt[n].hashed_password, *pp); | |
103 | if (r < 0) | |
104 | return log_error_errno(r, "Failed to check supplied FIDO2 password: %m"); | |
105 | if (r > 0) { | |
106 | log_info("Previously acquired FIDO2 password unlocks user record."); | |
107 | return 0; | |
108 | } | |
109 | } | |
110 | } | |
111 | ||
112 | /* Fourth, let's see if any of the PKCS#11 security tokens are plugged in and help us */ | |
113 | for (size_t n = 0; n < h->n_pkcs11_encrypted_key; n++) { | |
114 | #if HAVE_P11KIT | |
115 | _cleanup_(pkcs11_callback_data_release) struct pkcs11_callback_data data = { | |
116 | .user_record = h, | |
117 | .secret = secret, | |
118 | .encrypted_key = h->pkcs11_encrypted_key + n, | |
119 | }; | |
70a5db58 LP |
120 | |
121 | r = pkcs11_find_token(data.encrypted_key->uri, pkcs11_callback, &data); | |
122 | switch (r) { | |
123 | case -EAGAIN: | |
124 | need_token = true; | |
125 | break; | |
126 | case -ENOANO: | |
127 | need_pin = true; | |
128 | break; | |
129 | case -ERFKILL: | |
130 | need_protected_authentication_path_permitted = true; | |
131 | break; | |
132 | case -EOWNERDEAD: | |
133 | pin_locked = true; | |
134 | break; | |
135 | case -ENOLCK: | |
136 | pin_incorrect = true; | |
137 | break; | |
138 | case -ETOOMANYREFS: | |
139 | pin_incorrect = pin_incorrect_few_tries_left = true; | |
140 | break; | |
141 | case -EUCLEAN: | |
142 | pin_incorrect = pin_incorrect_few_tries_left = pin_incorrect_one_try_left = true; | |
143 | break; | |
144 | default: | |
145 | if (r < 0) | |
146 | return r; | |
147 | ||
148 | r = test_password_one(data.encrypted_key->hashed_password, data.decrypted_password); | |
149 | if (r < 0) | |
150 | return log_error_errno(r, "Failed to test PKCS#11 password: %m"); | |
151 | if (r == 0) | |
152 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), "Configured PKCS#11 security token %s does not decrypt encrypted key correctly.", data.encrypted_key->uri); | |
153 | ||
154 | log_info("Decrypted password from PKCS#11 security token %s unlocks user record.", data.encrypted_key->uri); | |
155 | ||
7b78db28 LP |
156 | r = strv_extend(&cache->pkcs11_passwords, data.decrypted_password); |
157 | if (r < 0) | |
158 | return log_oom(); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | #else | |
163 | need_token = true; | |
164 | break; | |
165 | #endif | |
166 | } | |
167 | ||
168 | /* Fifth, let's see if any of the FIDO2 security tokens are plugged in and help us */ | |
169 | for (size_t n = 0; n < h->n_fido2_hmac_salt; n++) { | |
170 | #if HAVE_LIBFIDO2 | |
171 | _cleanup_(erase_and_freep) char *decrypted_password = NULL; | |
172 | ||
173 | r = fido2_use_token(h, secret, h->fido2_hmac_salt + n, &decrypted_password); | |
174 | switch (r) { | |
175 | case -EAGAIN: | |
176 | need_token = true; | |
177 | break; | |
178 | case -ENOANO: | |
179 | need_pin = true; | |
180 | break; | |
181 | case -EOWNERDEAD: | |
182 | pin_locked = true; | |
183 | break; | |
184 | case -ENOLCK: | |
185 | pin_incorrect = true; | |
186 | break; | |
187 | case -EMEDIUMTYPE: | |
188 | need_user_presence_permitted = true; | |
189 | break; | |
190 | case -ENOSTR: | |
191 | token_action_timeout = true; | |
192 | break; | |
193 | default: | |
194 | if (r < 0) | |
195 | return r; | |
196 | ||
197 | r = test_password_one(h->fido2_hmac_salt[n].hashed_password, decrypted_password); | |
198 | if (r < 0) | |
199 | return log_error_errno(r, "Failed to test FIDO2 password: %m"); | |
200 | if (r == 0) | |
201 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), "Configured FIDO2 security token does not decrypt encrypted key correctly."); | |
202 | ||
203 | log_info("Decrypted password from FIDO2 security token unlocks user record."); | |
204 | ||
205 | r = strv_extend(&cache->fido2_passwords, decrypted_password); | |
70a5db58 LP |
206 | if (r < 0) |
207 | return log_oom(); | |
208 | ||
c8f145ad | 209 | return 1; |
70a5db58 LP |
210 | } |
211 | #else | |
212 | need_token = true; | |
213 | break; | |
214 | #endif | |
215 | } | |
216 | ||
217 | /* Ordered by "relevance", i.e. the most "important" or "interesting" error condition is returned. */ | |
218 | if (pin_incorrect_one_try_left) | |
219 | return -EUCLEAN; | |
220 | if (pin_incorrect_few_tries_left) | |
221 | return -ETOOMANYREFS; | |
222 | if (pin_incorrect) | |
223 | return -ENOLCK; | |
224 | if (pin_locked) | |
225 | return -EOWNERDEAD; | |
7b78db28 LP |
226 | if (token_action_timeout) |
227 | return -ENOSTR; | |
70a5db58 LP |
228 | if (need_protected_authentication_path_permitted) |
229 | return -ERFKILL; | |
7b78db28 LP |
230 | if (need_user_presence_permitted) |
231 | return -EMEDIUMTYPE; | |
70a5db58 LP |
232 | if (need_pin) |
233 | return -ENOANO; | |
234 | if (need_token) | |
235 | return -EBADSLT; | |
236 | if (need_password) | |
237 | return -ENOKEY; | |
238 | ||
7b78db28 LP |
239 | /* Hmm, this means neither PCKS#11/FIDO2 nor classic hashed passwords were supplied, we cannot |
240 | * authenticate this reasonably */ | |
c8f145ad LP |
241 | if (strict_verify) |
242 | return log_debug_errno(SYNTHETIC_ERRNO(EKEYREVOKED), | |
7b78db28 | 243 | "No hashed passwords and no PKCS#11/FIDO2 tokens defined, cannot authenticate user record, refusing."); |
c8f145ad LP |
244 | |
245 | /* If strict verification is off this means we are possibly in the case where we encountered an | |
246 | * unfixated record, i.e. a synthetic one that accordingly lacks any authentication data. In this | |
247 | * case, allow the authentication to pass for now, so that the second (or third) authentication level | |
248 | * (the ones of the user record in the LUKS header or inside the home directory) will then catch | |
249 | * invalid passwords. The second/third authentication always runs in strict verification mode. */ | |
250 | log_debug("No hashed passwords and no PKCS#11 tokens defined in record, cannot authenticate user record. " | |
251 | "Deferring to embedded user record."); | |
252 | return 0; | |
70a5db58 LP |
253 | } |
254 | ||
255 | int home_setup_undo(HomeSetup *setup) { | |
256 | int r = 0, q; | |
257 | ||
258 | assert(setup); | |
259 | ||
28a7f106 LP |
260 | if (setup->root_fd >= 0) { |
261 | if (setup->do_offline_fitrim) { | |
262 | q = run_fitrim(setup->root_fd); | |
263 | if (q < 0) | |
264 | r = q; | |
265 | } | |
266 | ||
267 | setup->root_fd = safe_close(setup->root_fd); | |
268 | } | |
70a5db58 LP |
269 | |
270 | if (setup->undo_mount) { | |
271 | q = umount_verbose("/run/systemd/user-home-mount"); | |
272 | if (q < 0) | |
273 | r = q; | |
274 | } | |
275 | ||
276 | if (setup->undo_dm && setup->crypt_device && setup->dm_name) { | |
277 | q = crypt_deactivate(setup->crypt_device, setup->dm_name); | |
278 | if (q < 0) | |
279 | r = q; | |
280 | } | |
281 | ||
28a7f106 LP |
282 | if (setup->image_fd >= 0) { |
283 | if (setup->do_offline_fallocate) { | |
284 | q = run_fallocate(setup->image_fd, NULL); | |
285 | if (q < 0) | |
286 | r = q; | |
287 | } | |
288 | ||
289 | setup->image_fd = safe_close(setup->image_fd); | |
290 | } | |
291 | ||
70a5db58 LP |
292 | setup->undo_mount = false; |
293 | setup->undo_dm = false; | |
28a7f106 LP |
294 | setup->do_offline_fitrim = false; |
295 | setup->do_offline_fallocate = false; | |
70a5db58 LP |
296 | |
297 | setup->dm_name = mfree(setup->dm_name); | |
298 | setup->dm_node = mfree(setup->dm_node); | |
299 | ||
300 | setup->loop = loop_device_unref(setup->loop); | |
301 | crypt_free(setup->crypt_device); | |
302 | setup->crypt_device = NULL; | |
303 | ||
304 | explicit_bzero_safe(setup->volume_key, setup->volume_key_size); | |
305 | setup->volume_key = mfree(setup->volume_key); | |
306 | setup->volume_key_size = 0; | |
307 | ||
308 | return r; | |
309 | } | |
310 | ||
311 | int home_prepare( | |
312 | UserRecord *h, | |
313 | bool already_activated, | |
7b78db28 | 314 | PasswordCache *cache, |
70a5db58 LP |
315 | HomeSetup *setup, |
316 | UserRecord **ret_header_home) { | |
317 | ||
318 | int r; | |
319 | ||
320 | assert(h); | |
321 | assert(setup); | |
322 | assert(!setup->loop); | |
323 | assert(!setup->crypt_device); | |
324 | assert(setup->root_fd < 0); | |
325 | assert(!setup->undo_dm); | |
326 | assert(!setup->undo_mount); | |
327 | ||
328 | /* Makes a home directory accessible (through the root_fd file descriptor, not by path!). */ | |
329 | ||
330 | switch (user_record_storage(h)) { | |
331 | ||
332 | case USER_LUKS: | |
7b78db28 | 333 | return home_prepare_luks(h, already_activated, NULL, cache, setup, ret_header_home); |
70a5db58 LP |
334 | |
335 | case USER_SUBVOLUME: | |
336 | case USER_DIRECTORY: | |
337 | r = home_prepare_directory(h, already_activated, setup); | |
338 | break; | |
339 | ||
340 | case USER_FSCRYPT: | |
7b78db28 | 341 | r = home_prepare_fscrypt(h, already_activated, cache, setup); |
70a5db58 LP |
342 | break; |
343 | ||
344 | case USER_CIFS: | |
345 | r = home_prepare_cifs(h, already_activated, setup); | |
346 | break; | |
347 | ||
348 | default: | |
349 | return log_error_errno(SYNTHETIC_ERRNO(ENOLINK), "Processing home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
350 | } | |
351 | ||
352 | if (r < 0) | |
353 | return r; | |
354 | ||
355 | if (ret_header_home) | |
356 | *ret_header_home = NULL; | |
357 | ||
358 | return r; | |
359 | } | |
360 | ||
361 | int home_sync_and_statfs(int root_fd, struct statfs *ret) { | |
362 | assert(root_fd >= 0); | |
363 | ||
364 | /* Let's sync this to disk, so that the disk space reported by fstatfs() below is accurate (for file | |
365 | * systems such as btrfs where this is determined lazily). */ | |
366 | ||
367 | if (syncfs(root_fd) < 0) | |
368 | return log_error_errno(errno, "Failed to synchronize file system: %m"); | |
369 | ||
370 | if (ret) | |
371 | if (fstatfs(root_fd, ret) < 0) | |
372 | return log_error_errno(errno, "Failed to statfs() file system: %m"); | |
373 | ||
374 | log_info("Synchronized disk."); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int read_identity_file(int root_fd, JsonVariant **ret) { | |
380 | _cleanup_(fclosep) FILE *identity_file = NULL; | |
381 | _cleanup_close_ int identity_fd = -1; | |
382 | unsigned line, column; | |
383 | int r; | |
384 | ||
385 | assert(root_fd >= 0); | |
386 | assert(ret); | |
387 | ||
388 | identity_fd = openat(root_fd, ".identity", O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW|O_NONBLOCK); | |
389 | if (identity_fd < 0) | |
390 | return log_error_errno(errno, "Failed to open .identity file in home directory: %m"); | |
391 | ||
392 | r = fd_verify_regular(identity_fd); | |
393 | if (r < 0) | |
394 | return log_error_errno(r, "Embedded identity file is not a regular file, refusing: %m"); | |
395 | ||
4fa744a3 | 396 | identity_file = take_fdopen(&identity_fd, "r"); |
70a5db58 LP |
397 | if (!identity_file) |
398 | return log_oom(); | |
399 | ||
70a5db58 LP |
400 | r = json_parse_file(identity_file, ".identity", JSON_PARSE_SENSITIVE, ret, &line, &column); |
401 | if (r < 0) | |
402 | return log_error_errno(r, "[.identity:%u:%u] Failed to parse JSON data: %m", line, column); | |
403 | ||
404 | log_info("Read embedded .identity file."); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | static int write_identity_file(int root_fd, JsonVariant *v, uid_t uid) { | |
410 | _cleanup_(json_variant_unrefp) JsonVariant *normalized = NULL; | |
411 | _cleanup_(fclosep) FILE *identity_file = NULL; | |
412 | _cleanup_close_ int identity_fd = -1; | |
413 | _cleanup_free_ char *fn = NULL; | |
414 | int r; | |
415 | ||
416 | assert(root_fd >= 0); | |
417 | assert(v); | |
418 | ||
419 | normalized = json_variant_ref(v); | |
420 | ||
421 | r = json_variant_normalize(&normalized); | |
422 | if (r < 0) | |
423 | log_warning_errno(r, "Failed to normalize user record, ignoring: %m"); | |
424 | ||
425 | r = tempfn_random(".identity", NULL, &fn); | |
426 | if (r < 0) | |
427 | return r; | |
428 | ||
429 | identity_fd = openat(root_fd, fn, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0600); | |
430 | if (identity_fd < 0) | |
431 | return log_error_errno(errno, "Failed to create .identity file in home directory: %m"); | |
432 | ||
4fa744a3 | 433 | identity_file = take_fdopen(&identity_fd, "w"); |
70a5db58 LP |
434 | if (!identity_file) { |
435 | r = log_oom(); | |
436 | goto fail; | |
437 | } | |
438 | ||
70a5db58 LP |
439 | json_variant_dump(normalized, JSON_FORMAT_PRETTY, identity_file, NULL); |
440 | ||
441 | r = fflush_and_check(identity_file); | |
442 | if (r < 0) { | |
443 | log_error_errno(r, "Failed to write .identity file: %m"); | |
444 | goto fail; | |
445 | } | |
446 | ||
447 | if (fchown(fileno(identity_file), uid, uid) < 0) { | |
448 | log_error_errno(r, "Failed to change ownership of identity file: %m"); | |
449 | goto fail; | |
450 | } | |
451 | ||
452 | if (renameat(root_fd, fn, root_fd, ".identity") < 0) { | |
453 | r = log_error_errno(errno, "Failed to move identity file into place: %m"); | |
454 | goto fail; | |
455 | } | |
456 | ||
457 | log_info("Wrote embedded .identity file."); | |
458 | ||
459 | return 0; | |
460 | ||
461 | fail: | |
462 | (void) unlinkat(root_fd, fn, 0); | |
463 | return r; | |
464 | } | |
465 | ||
466 | int home_load_embedded_identity( | |
467 | UserRecord *h, | |
468 | int root_fd, | |
469 | UserRecord *header_home, | |
470 | UserReconcileMode mode, | |
7b78db28 | 471 | PasswordCache *cache, |
70a5db58 LP |
472 | UserRecord **ret_embedded_home, |
473 | UserRecord **ret_new_home) { | |
474 | ||
475 | _cleanup_(user_record_unrefp) UserRecord *embedded_home = NULL, *intermediate_home = NULL, *new_home = NULL; | |
476 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
477 | int r; | |
478 | ||
479 | assert(h); | |
480 | assert(root_fd >= 0); | |
481 | ||
482 | r = read_identity_file(root_fd, &v); | |
483 | if (r < 0) | |
484 | return r; | |
485 | ||
486 | embedded_home = user_record_new(); | |
487 | if (!embedded_home) | |
488 | return log_oom(); | |
489 | ||
490 | r = user_record_load(embedded_home, v, USER_RECORD_LOAD_EMBEDDED); | |
491 | if (r < 0) | |
492 | return r; | |
493 | ||
494 | if (!user_record_compatible(h, embedded_home)) | |
80ace4f2 | 495 | return log_error_errno(SYNTHETIC_ERRNO(EREMCHG), "Embedded home record not compatible with host record, refusing."); |
70a5db58 LP |
496 | |
497 | /* Insist that credentials the user supplies also unlocks any embedded records. */ | |
7b78db28 | 498 | r = user_record_authenticate(embedded_home, h, cache, /* strict_verify= */ true); |
70a5db58 LP |
499 | if (r < 0) |
500 | return r; | |
c8f145ad | 501 | assert(r > 0); /* Insist that a password was verified */ |
70a5db58 LP |
502 | |
503 | /* At this point we have three records to deal with: | |
504 | * | |
505 | * · The record we got passed from the host | |
506 | * · The record included in the LUKS header (only if LUKS is used) | |
507 | * · The record in the home directory itself (~.identity) | |
508 | * | |
509 | * Now we have to reconcile all three, and let the newest one win. */ | |
510 | ||
511 | if (header_home) { | |
512 | /* Note we relax the requirements here. Instead of insisting that the host record is strictly | |
513 | * newer, let's also be OK if its equally new. If it is, we'll however insist that the | |
514 | * embedded record must be newer, so that we update at least one of the two. */ | |
515 | ||
516 | r = user_record_reconcile(h, header_home, mode == USER_RECONCILE_REQUIRE_NEWER ? USER_RECONCILE_REQUIRE_NEWER_OR_EQUAL : mode, &intermediate_home); | |
517 | if (r == -EREMCHG) /* this was supposed to be checked earlier already, but let's check this again */ | |
518 | return log_error_errno(r, "Identity stored on host and in header don't match, refusing."); | |
519 | if (r == -ESTALE) | |
520 | return log_error_errno(r, "Embedded identity record is newer than supplied record, refusing."); | |
521 | if (r < 0) | |
522 | return log_error_errno(r, "Failed to reconcile host and header identities: %m"); | |
523 | if (r == USER_RECONCILE_EMBEDDED_WON) | |
524 | log_info("Reconciling header user identity completed (header version was newer)."); | |
525 | else if (r == USER_RECONCILE_HOST_WON) { | |
526 | log_info("Reconciling header user identity completed (host version was newer)."); | |
527 | ||
528 | if (mode == USER_RECONCILE_REQUIRE_NEWER) /* Host version is newer than the header | |
529 | * version, hence we'll update | |
530 | * something. This means we can relax the | |
531 | * requirements on the embedded | |
532 | * identity. */ | |
533 | mode = USER_RECONCILE_REQUIRE_NEWER_OR_EQUAL; | |
534 | } else { | |
535 | assert(r == USER_RECONCILE_IDENTICAL); | |
536 | log_info("Reconciling user identities completed (host and header version were identical)."); | |
537 | } | |
538 | ||
539 | h = intermediate_home; | |
540 | } | |
541 | ||
542 | r = user_record_reconcile(h, embedded_home, mode, &new_home); | |
543 | if (r == -EREMCHG) | |
544 | return log_error_errno(r, "Identity stored on host and in home don't match, refusing."); | |
545 | if (r == -ESTALE) | |
546 | return log_error_errno(r, "Embedded identity record is equally new or newer than supplied record, refusing."); | |
547 | if (r < 0) | |
548 | return log_error_errno(r, "Failed to reconcile host and embedded identities: %m"); | |
549 | if (r == USER_RECONCILE_EMBEDDED_WON) | |
550 | log_info("Reconciling embedded user identity completed (embedded version was newer)."); | |
551 | else if (r == USER_RECONCILE_HOST_WON) | |
552 | log_info("Reconciling embedded user identity completed (host version was newer)."); | |
553 | else { | |
554 | assert(r == USER_RECONCILE_IDENTICAL); | |
555 | log_info("Reconciling embedded user identity completed (host and embedded version were identical)."); | |
556 | } | |
557 | ||
558 | if (ret_embedded_home) | |
559 | *ret_embedded_home = TAKE_PTR(embedded_home); | |
560 | ||
561 | if (ret_new_home) | |
562 | *ret_new_home = TAKE_PTR(new_home); | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | int home_store_embedded_identity(UserRecord *h, int root_fd, uid_t uid, UserRecord *old_home) { | |
568 | _cleanup_(user_record_unrefp) UserRecord *embedded = NULL; | |
569 | int r; | |
570 | ||
571 | assert(h); | |
572 | assert(root_fd >= 0); | |
573 | assert(uid_is_valid(uid)); | |
574 | ||
575 | r = user_record_clone(h, USER_RECORD_EXTRACT_EMBEDDED, &embedded); | |
576 | if (r < 0) | |
577 | return log_error_errno(r, "Failed to determine new embedded record: %m"); | |
578 | ||
579 | if (old_home && user_record_equal(old_home, embedded)) { | |
580 | log_debug("Not updating embedded home record."); | |
581 | return 0; | |
582 | } | |
583 | ||
584 | /* The identity has changed, let's update it in the image */ | |
585 | r = write_identity_file(root_fd, embedded->json, h->uid); | |
586 | if (r < 0) | |
587 | return r; | |
588 | ||
589 | return 1; | |
590 | } | |
591 | ||
592 | static const char *file_system_type_fd(int fd) { | |
593 | struct statfs sfs; | |
594 | ||
595 | assert(fd >= 0); | |
596 | ||
597 | if (fstatfs(fd, &sfs) < 0) { | |
598 | log_debug_errno(errno, "Failed to statfs(): %m"); | |
599 | return NULL; | |
600 | } | |
601 | ||
602 | if (is_fs_type(&sfs, XFS_SB_MAGIC)) | |
603 | return "xfs"; | |
604 | if (is_fs_type(&sfs, EXT4_SUPER_MAGIC)) | |
605 | return "ext4"; | |
606 | if (is_fs_type(&sfs, BTRFS_SUPER_MAGIC)) | |
607 | return "btrfs"; | |
608 | ||
609 | return NULL; | |
610 | } | |
611 | ||
612 | int home_extend_embedded_identity(UserRecord *h, UserRecord *used, HomeSetup *setup) { | |
613 | int r; | |
614 | ||
615 | assert(h); | |
616 | assert(used); | |
617 | assert(setup); | |
618 | ||
619 | r = user_record_add_binding( | |
620 | h, | |
621 | user_record_storage(used), | |
622 | user_record_image_path(used), | |
623 | setup->found_partition_uuid, | |
624 | setup->found_luks_uuid, | |
625 | setup->found_fs_uuid, | |
626 | setup->crypt_device ? crypt_get_cipher(setup->crypt_device) : NULL, | |
627 | setup->crypt_device ? crypt_get_cipher_mode(setup->crypt_device) : NULL, | |
628 | setup->crypt_device ? luks_volume_key_size_convert(setup->crypt_device) : UINT64_MAX, | |
629 | file_system_type_fd(setup->root_fd), | |
630 | user_record_home_directory(used), | |
631 | used->uid, | |
632 | (gid_t) used->uid); | |
633 | if (r < 0) | |
634 | return log_error_errno(r, "Failed to update binding in record: %m"); | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | static int chown_recursive_directory(int root_fd, uid_t uid) { | |
640 | int r; | |
641 | ||
642 | assert(root_fd >= 0); | |
643 | assert(uid_is_valid(uid)); | |
644 | ||
645 | r = fd_chown_recursive(root_fd, uid, (gid_t) uid, 0777); | |
646 | if (r < 0) | |
647 | return log_error_errno(r, "Failed to change ownership of files and directories: %m"); | |
648 | if (r == 0) | |
649 | log_info("Recursive changing of ownership not necessary, skipped."); | |
650 | else | |
651 | log_info("Recursive changing of ownership completed."); | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | int home_refresh( | |
657 | UserRecord *h, | |
658 | HomeSetup *setup, | |
659 | UserRecord *header_home, | |
7b78db28 | 660 | PasswordCache *cache, |
70a5db58 LP |
661 | struct statfs *ret_statfs, |
662 | UserRecord **ret_new_home) { | |
663 | ||
664 | _cleanup_(user_record_unrefp) UserRecord *embedded_home = NULL, *new_home = NULL; | |
665 | int r; | |
666 | ||
667 | assert(h); | |
668 | assert(setup); | |
669 | assert(ret_new_home); | |
670 | ||
671 | /* When activating a home directory, does the identity work: loads the identity from the $HOME | |
672 | * directory, reconciles it with our idea, chown()s everything. */ | |
673 | ||
7b78db28 | 674 | r = home_load_embedded_identity(h, setup->root_fd, header_home, USER_RECONCILE_ANY, cache, &embedded_home, &new_home); |
70a5db58 LP |
675 | if (r < 0) |
676 | return r; | |
677 | ||
678 | r = home_store_header_identity_luks(new_home, setup, header_home); | |
679 | if (r < 0) | |
680 | return r; | |
681 | ||
682 | r = home_store_embedded_identity(new_home, setup->root_fd, h->uid, embedded_home); | |
683 | if (r < 0) | |
684 | return r; | |
685 | ||
686 | r = chown_recursive_directory(setup->root_fd, h->uid); | |
687 | if (r < 0) | |
688 | return r; | |
689 | ||
690 | r = home_sync_and_statfs(setup->root_fd, ret_statfs); | |
691 | if (r < 0) | |
692 | return r; | |
693 | ||
694 | *ret_new_home = TAKE_PTR(new_home); | |
695 | return 0; | |
696 | } | |
697 | ||
698 | static int home_activate(UserRecord *h, UserRecord **ret_home) { | |
7b78db28 | 699 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
70a5db58 LP |
700 | _cleanup_(user_record_unrefp) UserRecord *new_home = NULL; |
701 | int r; | |
702 | ||
703 | assert(h); | |
704 | ||
705 | if (!h->user_name) | |
706 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks user name, refusing."); | |
707 | if (!uid_is_valid(h->uid)) | |
708 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks UID, refusing."); | |
709 | if (!IN_SET(user_record_storage(h), USER_LUKS, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT, USER_CIFS)) | |
710 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Activating home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
711 | ||
7b78db28 | 712 | r = user_record_authenticate(h, h, &cache, /* strict_verify= */ false); |
70a5db58 LP |
713 | if (r < 0) |
714 | return r; | |
715 | ||
716 | r = user_record_test_home_directory_and_warn(h); | |
717 | if (r < 0) | |
718 | return r; | |
719 | if (r == USER_TEST_MOUNTED) | |
720 | return log_error_errno(SYNTHETIC_ERRNO(EALREADY), "Home directory %s is already mounted, refusing.", user_record_home_directory(h)); | |
721 | ||
722 | r = user_record_test_image_path_and_warn(h); | |
723 | if (r < 0) | |
724 | return r; | |
725 | if (r == USER_TEST_ABSENT) | |
726 | return log_error_errno(SYNTHETIC_ERRNO(ENOENT), "Image path %s is missing, refusing.", user_record_image_path(h)); | |
727 | ||
728 | switch (user_record_storage(h)) { | |
729 | ||
730 | case USER_LUKS: | |
7b78db28 | 731 | r = home_activate_luks(h, &cache, &new_home); |
70a5db58 LP |
732 | if (r < 0) |
733 | return r; | |
734 | ||
735 | break; | |
736 | ||
737 | case USER_SUBVOLUME: | |
738 | case USER_DIRECTORY: | |
739 | case USER_FSCRYPT: | |
7b78db28 | 740 | r = home_activate_directory(h, &cache, &new_home); |
70a5db58 LP |
741 | if (r < 0) |
742 | return r; | |
743 | ||
744 | break; | |
745 | ||
746 | case USER_CIFS: | |
7b78db28 | 747 | r = home_activate_cifs(h, &cache, &new_home); |
70a5db58 LP |
748 | if (r < 0) |
749 | return r; | |
750 | ||
751 | break; | |
752 | ||
753 | default: | |
754 | assert_not_reached("unexpected type"); | |
755 | } | |
756 | ||
757 | /* Note that the returned object might either be a reference to an updated version of the existing | |
758 | * home object, or a reference to a newly allocated home object. The caller has to be able to deal | |
759 | * with both, and consider the old object out-of-date. */ | |
760 | if (user_record_equal(h, new_home)) { | |
761 | *ret_home = NULL; | |
762 | return 0; /* no identity change */ | |
763 | } | |
764 | ||
765 | *ret_home = TAKE_PTR(new_home); | |
766 | return 1; /* identity updated */ | |
767 | } | |
768 | ||
769 | static int home_deactivate(UserRecord *h, bool force) { | |
770 | bool done = false; | |
771 | int r; | |
772 | ||
773 | assert(h); | |
774 | ||
775 | if (!h->user_name) | |
776 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record incomplete, refusing."); | |
777 | if (!IN_SET(user_record_storage(h), USER_LUKS, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT, USER_CIFS)) | |
778 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Deactivating home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
779 | ||
780 | r = user_record_test_home_directory_and_warn(h); | |
781 | if (r < 0) | |
782 | return r; | |
783 | if (r == USER_TEST_MOUNTED) { | |
28a7f106 LP |
784 | if (user_record_storage(h) == USER_LUKS) { |
785 | r = home_trim_luks(h); | |
786 | if (r < 0) | |
787 | return r; | |
788 | } | |
789 | ||
70a5db58 LP |
790 | if (umount2(user_record_home_directory(h), UMOUNT_NOFOLLOW | (force ? MNT_FORCE|MNT_DETACH : 0)) < 0) |
791 | return log_error_errno(errno, "Failed to unmount %s: %m", user_record_home_directory(h)); | |
792 | ||
793 | log_info("Unmounting completed."); | |
794 | done = true; | |
795 | } else | |
796 | log_info("Directory %s is already unmounted.", user_record_home_directory(h)); | |
797 | ||
798 | if (user_record_storage(h) == USER_LUKS) { | |
799 | r = home_deactivate_luks(h); | |
800 | if (r < 0) | |
801 | return r; | |
802 | if (r > 0) | |
803 | done = true; | |
804 | } | |
805 | ||
806 | if (!done) | |
807 | return log_error_errno(SYNTHETIC_ERRNO(ENOEXEC), "Home is not active."); | |
808 | ||
809 | log_info("Everything completed."); | |
810 | return 0; | |
811 | } | |
812 | ||
813 | static int copy_skel(int root_fd, const char *skel) { | |
814 | int r; | |
815 | ||
816 | assert(root_fd >= 0); | |
817 | ||
818 | r = copy_tree_at(AT_FDCWD, skel, root_fd, ".", UID_INVALID, GID_INVALID, COPY_MERGE|COPY_REPLACE); | |
819 | if (r == -ENOENT) { | |
820 | log_info("Skeleton directory %s missing, ignoring.", skel); | |
821 | return 0; | |
822 | } | |
823 | if (r < 0) | |
824 | return log_error_errno(r, "Failed to copy in %s: %m", skel); | |
825 | ||
826 | log_info("Copying in %s completed.", skel); | |
827 | return 0; | |
828 | } | |
829 | ||
830 | static int change_access_mode(int root_fd, mode_t m) { | |
831 | assert(root_fd >= 0); | |
832 | ||
833 | if (fchmod(root_fd, m) < 0) | |
834 | return log_error_errno(errno, "Failed to change access mode of top-level directory: %m"); | |
835 | ||
836 | log_info("Changed top-level directory access mode to 0%o.", m); | |
837 | return 0; | |
838 | } | |
839 | ||
840 | int home_populate(UserRecord *h, int dir_fd) { | |
841 | int r; | |
842 | ||
843 | assert(h); | |
844 | assert(dir_fd >= 0); | |
845 | ||
846 | r = copy_skel(dir_fd, user_record_skeleton_directory(h)); | |
847 | if (r < 0) | |
848 | return r; | |
849 | ||
850 | r = home_store_embedded_identity(h, dir_fd, h->uid, NULL); | |
851 | if (r < 0) | |
852 | return r; | |
853 | ||
854 | r = chown_recursive_directory(dir_fd, h->uid); | |
855 | if (r < 0) | |
856 | return r; | |
857 | ||
858 | r = change_access_mode(dir_fd, user_record_access_mode(h)); | |
859 | if (r < 0) | |
860 | return r; | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | static int user_record_compile_effective_passwords( | |
866 | UserRecord *h, | |
7b78db28 LP |
867 | PasswordCache *cache, |
868 | char ***ret_effective_passwords) { | |
70a5db58 | 869 | |
7b78db28 | 870 | _cleanup_(strv_free_erasep) char **effective = NULL; |
70a5db58 LP |
871 | size_t n; |
872 | char **i; | |
873 | int r; | |
874 | ||
875 | assert(h); | |
7b78db28 | 876 | assert(cache); |
70a5db58 LP |
877 | |
878 | /* We insist on at least one classic hashed password to be defined in addition to any PKCS#11 one, as | |
879 | * a safe fallback, but also to simplify the password changing algorithm: there we require providing | |
880 | * the old literal password only (and do not care for the old PKCS#11 token) */ | |
881 | ||
882 | if (strv_isempty(h->hashed_password)) | |
883 | return log_error_errno(EINVAL, "User record has no hashed passwords, refusing."); | |
884 | ||
885 | /* Generates the list of plaintext passwords to propagate to LUKS/fscrypt devices, and checks whether | |
886 | * we have a plaintext password for each hashed one. If we are missing one we'll fail, since we | |
887 | * couldn't sync fscrypt/LUKS to the login account properly. */ | |
888 | ||
889 | STRV_FOREACH(i, h->hashed_password) { | |
890 | bool found = false; | |
891 | char **j; | |
892 | ||
893 | log_debug("Looking for plaintext password for: %s", *i); | |
894 | ||
895 | /* Let's scan all provided plaintext passwords */ | |
896 | STRV_FOREACH(j, h->password) { | |
897 | r = test_password_one(*i, *j); | |
898 | if (r < 0) | |
899 | return log_error_errno(r, "Failed to test plain text password: %m"); | |
900 | if (r > 0) { | |
901 | if (ret_effective_passwords) { | |
902 | r = strv_extend(&effective, *j); | |
903 | if (r < 0) | |
904 | return log_oom(); | |
905 | } | |
906 | ||
907 | log_debug("Found literal plaintext password."); | |
908 | found = true; | |
909 | break; | |
910 | } | |
911 | } | |
912 | ||
913 | if (!found) | |
914 | return log_error_errno(SYNTHETIC_ERRNO(ENOKEY), "Missing plaintext password for defined hashed password"); | |
915 | } | |
916 | ||
917 | for (n = 0; n < h->n_pkcs11_encrypted_key; n++) { | |
918 | #if HAVE_P11KIT | |
919 | _cleanup_(pkcs11_callback_data_release) struct pkcs11_callback_data data = { | |
920 | .user_record = h, | |
921 | .secret = h, | |
922 | .encrypted_key = h->pkcs11_encrypted_key + n, | |
923 | }; | |
924 | ||
925 | r = pkcs11_find_token(data.encrypted_key->uri, pkcs11_callback, &data); | |
926 | if (r == -EAGAIN) | |
927 | return -EBADSLT; | |
928 | if (r < 0) | |
929 | return r; | |
930 | ||
931 | r = test_password_one(data.encrypted_key->hashed_password, data.decrypted_password); | |
932 | if (r < 0) | |
933 | return log_error_errno(r, "Failed to test PKCS#11 password: %m"); | |
934 | if (r == 0) | |
935 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), "Decrypted password from token is not correct, refusing."); | |
936 | ||
937 | if (ret_effective_passwords) { | |
938 | r = strv_extend(&effective, data.decrypted_password); | |
939 | if (r < 0) | |
940 | return log_oom(); | |
941 | } | |
942 | ||
7b78db28 LP |
943 | r = strv_extend(&cache->pkcs11_passwords, data.decrypted_password); |
944 | if (r < 0) | |
945 | return log_oom(); | |
946 | #else | |
947 | return -EBADSLT; | |
948 | #endif | |
949 | } | |
950 | ||
951 | for (n = 0; n < h->n_fido2_hmac_salt; n++) { | |
952 | #if HAVE_LIBFIDO2 | |
953 | _cleanup_(erase_and_freep) char *decrypted_password = NULL; | |
954 | ||
955 | r = fido2_use_token(h, h, h->fido2_hmac_salt + n, &decrypted_password); | |
956 | if (r < 0) | |
957 | return r; | |
958 | ||
959 | r = test_password_one(h->fido2_hmac_salt[n].hashed_password, decrypted_password); | |
960 | if (r < 0) | |
961 | return log_error_errno(r, "Failed to test FIDO2 password: %m"); | |
962 | if (r == 0) | |
963 | return log_error_errno(SYNTHETIC_ERRNO(EPERM), "Decrypted password from token is not correct, refusing."); | |
964 | ||
965 | if (ret_effective_passwords) { | |
966 | r = strv_extend(&effective, decrypted_password); | |
70a5db58 LP |
967 | if (r < 0) |
968 | return log_oom(); | |
969 | } | |
7b78db28 LP |
970 | |
971 | r = strv_extend(&cache->fido2_passwords, decrypted_password); | |
972 | if (r < 0) | |
973 | return log_oom(); | |
70a5db58 LP |
974 | #else |
975 | return -EBADSLT; | |
976 | #endif | |
977 | } | |
978 | ||
979 | if (ret_effective_passwords) | |
980 | *ret_effective_passwords = TAKE_PTR(effective); | |
70a5db58 LP |
981 | |
982 | return 0; | |
983 | } | |
984 | ||
1dfe5de0 LP |
985 | static int determine_default_storage(UserStorage *ret) { |
986 | UserStorage storage = _USER_STORAGE_INVALID; | |
987 | const char *e; | |
988 | int r; | |
989 | ||
990 | assert(ret); | |
991 | ||
992 | /* homed tells us via an environment variable which default storage to use */ | |
993 | e = getenv("SYSTEMD_HOME_DEFAULT_STORAGE"); | |
994 | if (e) { | |
995 | storage = user_storage_from_string(e); | |
996 | if (storage < 0) | |
997 | log_warning("$SYSTEMD_HOME_DEFAULT_STORAGE set to invalid storage type, ignoring: %s", e); | |
998 | else { | |
999 | log_info("Using configured default storage '%s'.", user_storage_to_string(storage)); | |
1000 | *ret = storage; | |
1001 | return 0; | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | /* When neither user nor admin specified the storage type to use, fix it to be LUKS — unless we run | |
1006 | * in a container where loopback devices and LUKS/DM are not available. Also, if /home is encrypted | |
1007 | * anyway, let's avoid duplicate encryption. Note that we typically default to the assumption of | |
1008 | * "classic" storage for most operations. However, if we create a new home, then let's user LUKS if | |
1009 | * nothing is specified. */ | |
1010 | ||
1011 | r = detect_container(); | |
1012 | if (r < 0) | |
1013 | return log_error_errno(r, "Failed to determine whether we are in a container: %m"); | |
1014 | if (r == 0) { | |
1015 | r = path_is_encrypted("/home"); | |
1016 | if (r < 0) | |
1017 | log_warning_errno(r, "Failed to determine if /home is encrypted, ignoring: %m"); | |
1018 | if (r <= 0) { | |
1019 | log_info("Using automatic default storage of '%s'.", user_storage_to_string(USER_LUKS)); | |
1020 | *ret = USER_LUKS; | |
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | log_info("/home is encrypted, not using '%s' storage, in order to avoid double encryption.", user_storage_to_string(USER_LUKS)); | |
1025 | } else | |
1026 | log_info("Running in container, not using '%s' storage.", user_storage_to_string(USER_LUKS)); | |
1027 | ||
1028 | r = path_is_fs_type("/home", BTRFS_SUPER_MAGIC); | |
1029 | if (r < 0) | |
1030 | log_warning_errno(r, "Failed to determine file system of /home, ignoring: %m"); | |
1031 | if (r > 0) { | |
1032 | log_info("/home is on btrfs, using '%s' as storage.", user_storage_to_string(USER_SUBVOLUME)); | |
1033 | *ret = USER_SUBVOLUME; | |
1034 | } else { | |
1035 | log_info("/home is on simple file system, using '%s' as storage.", user_storage_to_string(USER_DIRECTORY)); | |
1036 | *ret = USER_DIRECTORY; | |
1037 | } | |
1038 | ||
1039 | return 0; | |
1040 | } | |
1041 | ||
70a5db58 | 1042 | static int home_create(UserRecord *h, UserRecord **ret_home) { |
7b78db28 | 1043 | _cleanup_(strv_free_erasep) char **effective_passwords = NULL; |
70a5db58 | 1044 | _cleanup_(user_record_unrefp) UserRecord *new_home = NULL; |
7b78db28 | 1045 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
1dfe5de0 LP |
1046 | UserStorage new_storage = _USER_STORAGE_INVALID; |
1047 | const char *new_fs = NULL; | |
70a5db58 LP |
1048 | int r; |
1049 | ||
1050 | assert(h); | |
1051 | ||
1052 | if (!h->user_name) | |
1053 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks name, refusing."); | |
1054 | if (!uid_is_valid(h->uid)) | |
1055 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks UID, refusing."); | |
1056 | ||
7b78db28 | 1057 | r = user_record_compile_effective_passwords(h, &cache, &effective_passwords); |
70a5db58 LP |
1058 | if (r < 0) |
1059 | return r; | |
1060 | ||
1061 | r = user_record_test_home_directory_and_warn(h); | |
1062 | if (r < 0) | |
1063 | return r; | |
1064 | if (r != USER_TEST_ABSENT) | |
1065 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), "Home directory %s already exists, refusing.", user_record_home_directory(h)); | |
1066 | ||
70a5db58 | 1067 | if (h->storage < 0) { |
1dfe5de0 | 1068 | r = determine_default_storage(&new_storage); |
70a5db58 | 1069 | if (r < 0) |
1dfe5de0 LP |
1070 | return r; |
1071 | } | |
70a5db58 | 1072 | |
1dfe5de0 LP |
1073 | if ((h->storage == USER_LUKS || |
1074 | (h->storage < 0 && new_storage == USER_LUKS)) && | |
1075 | !h->file_system_type) | |
1076 | new_fs = getenv("SYSTEMD_HOME_DEFAULT_FILE_SYSTEM_TYPE"); | |
70a5db58 | 1077 | |
1dfe5de0 | 1078 | if (new_storage >= 0 || new_fs) { |
70a5db58 LP |
1079 | r = user_record_add_binding( |
1080 | h, | |
1081 | new_storage, | |
1082 | NULL, | |
1083 | SD_ID128_NULL, | |
1084 | SD_ID128_NULL, | |
1085 | SD_ID128_NULL, | |
1086 | NULL, | |
1087 | NULL, | |
1088 | UINT64_MAX, | |
1dfe5de0 | 1089 | new_fs, |
70a5db58 LP |
1090 | NULL, |
1091 | UID_INVALID, | |
1092 | GID_INVALID); | |
1093 | if (r < 0) | |
1094 | return log_error_errno(r, "Failed to change storage type to LUKS: %m"); | |
70a5db58 LP |
1095 | } |
1096 | ||
1097 | r = user_record_test_image_path_and_warn(h); | |
1098 | if (r < 0) | |
1099 | return r; | |
1100 | if (!IN_SET(r, USER_TEST_ABSENT, USER_TEST_UNDEFINED, USER_TEST_MAYBE)) | |
1101 | return log_error_errno(SYNTHETIC_ERRNO(EEXIST), "Image path %s already exists, refusing.", user_record_image_path(h)); | |
1102 | ||
1103 | switch (user_record_storage(h)) { | |
1104 | ||
1105 | case USER_LUKS: | |
7b78db28 | 1106 | r = home_create_luks(h, &cache, effective_passwords, &new_home); |
70a5db58 LP |
1107 | break; |
1108 | ||
1109 | case USER_DIRECTORY: | |
1110 | case USER_SUBVOLUME: | |
1111 | r = home_create_directory_or_subvolume(h, &new_home); | |
1112 | break; | |
1113 | ||
1114 | case USER_FSCRYPT: | |
1115 | r = home_create_fscrypt(h, effective_passwords, &new_home); | |
1116 | break; | |
1117 | ||
1118 | case USER_CIFS: | |
1119 | r = home_create_cifs(h, &new_home); | |
1120 | break; | |
1121 | ||
1122 | default: | |
1123 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), | |
1124 | "Creating home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1125 | } | |
1126 | if (r < 0) | |
1127 | return r; | |
1128 | ||
1129 | if (user_record_equal(h, new_home)) { | |
1130 | *ret_home = NULL; | |
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | *ret_home = TAKE_PTR(new_home); | |
1135 | return 1; | |
1136 | } | |
1137 | ||
1138 | static int home_remove(UserRecord *h) { | |
1139 | bool deleted = false; | |
1140 | const char *ip, *hd; | |
1141 | int r; | |
1142 | ||
1143 | assert(h); | |
1144 | ||
1145 | if (!h->user_name) | |
1146 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks user name, refusing."); | |
1147 | if (!IN_SET(user_record_storage(h), USER_LUKS, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT, USER_CIFS)) | |
1148 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Removing home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1149 | ||
1150 | hd = user_record_home_directory(h); | |
1151 | ||
1152 | r = user_record_test_home_directory_and_warn(h); | |
1153 | if (r < 0) | |
1154 | return r; | |
1155 | if (r == USER_TEST_MOUNTED) | |
1156 | return log_error_errno(SYNTHETIC_ERRNO(EBUSY), "Directory %s is still mounted, refusing.", hd); | |
1157 | ||
1158 | assert(hd); | |
1159 | ||
1160 | r = user_record_test_image_path_and_warn(h); | |
1161 | if (r < 0) | |
1162 | return r; | |
1163 | ||
1164 | ip = user_record_image_path(h); | |
1165 | ||
1166 | switch (user_record_storage(h)) { | |
1167 | ||
1168 | case USER_LUKS: { | |
1169 | struct stat st; | |
1170 | ||
1171 | assert(ip); | |
1172 | ||
1173 | if (stat(ip, &st) < 0) { | |
6b8664cb | 1174 | if (errno != ENOENT) |
80ace4f2 | 1175 | return log_error_errno(errno, "Failed to stat() %s: %m", ip); |
70a5db58 LP |
1176 | |
1177 | } else { | |
1178 | if (S_ISREG(st.st_mode)) { | |
1179 | if (unlink(ip) < 0) { | |
1180 | if (errno != ENOENT) | |
1181 | return log_error_errno(errno, "Failed to remove %s: %m", ip); | |
1182 | } else | |
1183 | deleted = true; | |
1184 | ||
1185 | } else if (S_ISBLK(st.st_mode)) | |
1186 | log_info("Not removing file system on block device %s.", ip); | |
1187 | else | |
1188 | return log_error_errno(SYNTHETIC_ERRNO(ENOTBLK), "Image file %s is neither block device, nor regular, refusing removal.", ip); | |
1189 | } | |
1190 | ||
1191 | break; | |
1192 | } | |
1193 | ||
1194 | case USER_SUBVOLUME: | |
1195 | case USER_DIRECTORY: | |
1196 | case USER_FSCRYPT: | |
1197 | assert(ip); | |
1198 | ||
1199 | r = rm_rf(ip, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); | |
1200 | if (r < 0) { | |
1201 | if (r != -ENOENT) | |
1202 | return log_warning_errno(r, "Failed to remove %s: %m", ip); | |
1203 | } else | |
1204 | deleted = true; | |
1205 | ||
1206 | /* If the image path and the home directory are the same invalidate the home directory, so | |
1207 | * that we don't remove it anymore */ | |
1208 | if (path_equal(ip, hd)) | |
1209 | hd = NULL; | |
1210 | ||
1211 | break; | |
1212 | ||
1213 | case USER_CIFS: | |
1214 | /* Nothing else to do here: we won't remove remote stuff. */ | |
1215 | log_info("Not removing home directory on remote server."); | |
1216 | break; | |
1217 | ||
1218 | default: | |
1219 | assert_not_reached("unknown storage type"); | |
1220 | } | |
1221 | ||
1222 | if (hd) { | |
1223 | if (rmdir(hd) < 0) { | |
1224 | if (errno != ENOENT) | |
1225 | return log_error_errno(errno, "Failed to remove %s, ignoring: %m", hd); | |
1226 | } else | |
1227 | deleted = true; | |
1228 | } | |
1229 | ||
1230 | if (deleted) | |
1231 | log_info("Everything completed."); | |
e4ff0393 FS |
1232 | else |
1233 | return log_notice_errno(SYNTHETIC_ERRNO(EALREADY), | |
1234 | "Nothing to remove."); | |
70a5db58 LP |
1235 | |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | static int home_validate_update(UserRecord *h, HomeSetup *setup) { | |
1240 | bool has_mount = false; | |
1241 | int r; | |
1242 | ||
1243 | assert(h); | |
1244 | assert(setup); | |
1245 | ||
1246 | if (!h->user_name) | |
1247 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks user name, refusing."); | |
1248 | if (!uid_is_valid(h->uid)) | |
1249 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record lacks UID, refusing."); | |
1250 | if (!IN_SET(user_record_storage(h), USER_LUKS, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT, USER_CIFS)) | |
1251 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Processing home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1252 | ||
1253 | r = user_record_test_home_directory_and_warn(h); | |
1254 | if (r < 0) | |
1255 | return r; | |
1256 | ||
1257 | has_mount = r == USER_TEST_MOUNTED; | |
1258 | ||
1259 | r = user_record_test_image_path_and_warn(h); | |
1260 | if (r < 0) | |
1261 | return r; | |
1262 | if (r == USER_TEST_ABSENT) | |
1263 | return log_error_errno(SYNTHETIC_ERRNO(ENOENT), "Image path %s does not exist", user_record_image_path(h)); | |
1264 | ||
1265 | switch (user_record_storage(h)) { | |
1266 | ||
1267 | case USER_DIRECTORY: | |
1268 | case USER_SUBVOLUME: | |
1269 | case USER_FSCRYPT: | |
1270 | case USER_CIFS: | |
1271 | break; | |
1272 | ||
1273 | case USER_LUKS: { | |
1274 | r = home_validate_update_luks(h, setup); | |
1275 | if (r < 0) | |
1276 | return r; | |
1277 | if ((r > 0) != has_mount) | |
1278 | return log_error_errno(SYNTHETIC_ERRNO(EBUSY), "Home mount incompletely set up."); | |
1279 | ||
1280 | break; | |
1281 | } | |
1282 | ||
1283 | default: | |
1284 | assert_not_reached("unexpected storage type"); | |
1285 | } | |
1286 | ||
1287 | return has_mount; /* return true if the home record is already active */ | |
1288 | } | |
1289 | ||
1290 | static int home_update(UserRecord *h, UserRecord **ret) { | |
1291 | _cleanup_(user_record_unrefp) UserRecord *new_home = NULL, *header_home = NULL, *embedded_home = NULL; | |
70a5db58 | 1292 | _cleanup_(home_setup_undo) HomeSetup setup = HOME_SETUP_INIT; |
7b78db28 | 1293 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
70a5db58 LP |
1294 | bool already_activated = false; |
1295 | int r; | |
1296 | ||
1297 | assert(h); | |
1298 | assert(ret); | |
1299 | ||
7b78db28 | 1300 | r = user_record_authenticate(h, h, &cache, /* strict_verify= */ true); |
70a5db58 LP |
1301 | if (r < 0) |
1302 | return r; | |
c8f145ad | 1303 | assert(r > 0); /* Insist that a password was verified */ |
70a5db58 LP |
1304 | |
1305 | r = home_validate_update(h, &setup); | |
1306 | if (r < 0) | |
1307 | return r; | |
1308 | ||
1309 | already_activated = r > 0; | |
1310 | ||
7b78db28 | 1311 | r = home_prepare(h, already_activated, &cache, &setup, &header_home); |
70a5db58 LP |
1312 | if (r < 0) |
1313 | return r; | |
1314 | ||
7b78db28 | 1315 | r = home_load_embedded_identity(h, setup.root_fd, header_home, USER_RECONCILE_REQUIRE_NEWER, &cache, &embedded_home, &new_home); |
70a5db58 LP |
1316 | if (r < 0) |
1317 | return r; | |
1318 | ||
1319 | r = home_store_header_identity_luks(new_home, &setup, header_home); | |
1320 | if (r < 0) | |
1321 | return r; | |
1322 | ||
1323 | r = home_store_embedded_identity(new_home, setup.root_fd, h->uid, embedded_home); | |
1324 | if (r < 0) | |
1325 | return r; | |
1326 | ||
1327 | r = home_extend_embedded_identity(new_home, h, &setup); | |
1328 | if (r < 0) | |
1329 | return r; | |
1330 | ||
1331 | r = home_sync_and_statfs(setup.root_fd, NULL); | |
1332 | if (r < 0) | |
1333 | return r; | |
1334 | ||
1335 | r = home_setup_undo(&setup); | |
1336 | if (r < 0) | |
1337 | return r; | |
1338 | ||
1339 | log_info("Everything completed."); | |
1340 | ||
1341 | *ret = TAKE_PTR(new_home); | |
1342 | return 0; | |
1343 | } | |
1344 | ||
1345 | static int home_resize(UserRecord *h, UserRecord **ret) { | |
1346 | _cleanup_(home_setup_undo) HomeSetup setup = HOME_SETUP_INIT; | |
7b78db28 | 1347 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
70a5db58 LP |
1348 | bool already_activated = false; |
1349 | int r; | |
1350 | ||
1351 | assert(h); | |
1352 | assert(ret); | |
1353 | ||
1354 | if (h->disk_size == UINT64_MAX) | |
1355 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "No target size specified, refusing."); | |
1356 | ||
7b78db28 | 1357 | r = user_record_authenticate(h, h, &cache, /* strict_verify= */ true); |
70a5db58 LP |
1358 | if (r < 0) |
1359 | return r; | |
c8f145ad | 1360 | assert(r > 0); /* Insist that a password was verified */ |
70a5db58 LP |
1361 | |
1362 | r = home_validate_update(h, &setup); | |
1363 | if (r < 0) | |
1364 | return r; | |
1365 | ||
1366 | already_activated = r > 0; | |
1367 | ||
1368 | switch (user_record_storage(h)) { | |
1369 | ||
1370 | case USER_LUKS: | |
7b78db28 | 1371 | return home_resize_luks(h, already_activated, &cache, &setup, ret); |
70a5db58 LP |
1372 | |
1373 | case USER_DIRECTORY: | |
1374 | case USER_SUBVOLUME: | |
1375 | case USER_FSCRYPT: | |
7b78db28 | 1376 | return home_resize_directory(h, already_activated, &cache, &setup, ret); |
70a5db58 LP |
1377 | |
1378 | default: | |
1379 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Resizing home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | static int home_passwd(UserRecord *h, UserRecord **ret_home) { | |
1384 | _cleanup_(user_record_unrefp) UserRecord *header_home = NULL, *embedded_home = NULL, *new_home = NULL; | |
7b78db28 | 1385 | _cleanup_(strv_free_erasep) char **effective_passwords = NULL; |
70a5db58 | 1386 | _cleanup_(home_setup_undo) HomeSetup setup = HOME_SETUP_INIT; |
7b78db28 | 1387 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
70a5db58 LP |
1388 | bool already_activated = false; |
1389 | int r; | |
1390 | ||
1391 | assert(h); | |
1392 | assert(ret_home); | |
1393 | ||
1394 | if (!IN_SET(user_record_storage(h), USER_LUKS, USER_DIRECTORY, USER_SUBVOLUME, USER_FSCRYPT)) | |
1395 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Changing password of home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1396 | ||
7b78db28 | 1397 | r = user_record_compile_effective_passwords(h, &cache, &effective_passwords); |
70a5db58 LP |
1398 | if (r < 0) |
1399 | return r; | |
1400 | ||
1401 | r = home_validate_update(h, &setup); | |
1402 | if (r < 0) | |
1403 | return r; | |
1404 | ||
1405 | already_activated = r > 0; | |
1406 | ||
7b78db28 | 1407 | r = home_prepare(h, already_activated, &cache, &setup, &header_home); |
70a5db58 LP |
1408 | if (r < 0) |
1409 | return r; | |
1410 | ||
7b78db28 | 1411 | r = home_load_embedded_identity(h, setup.root_fd, header_home, USER_RECONCILE_REQUIRE_NEWER_OR_EQUAL, &cache, &embedded_home, &new_home); |
70a5db58 LP |
1412 | if (r < 0) |
1413 | return r; | |
1414 | ||
1415 | switch (user_record_storage(h)) { | |
1416 | ||
1417 | case USER_LUKS: | |
7b78db28 | 1418 | r = home_passwd_luks(h, &setup, &cache, effective_passwords); |
70a5db58 LP |
1419 | if (r < 0) |
1420 | return r; | |
1421 | break; | |
1422 | ||
1423 | case USER_FSCRYPT: | |
7b78db28 | 1424 | r = home_passwd_fscrypt(h, &setup, &cache, effective_passwords); |
70a5db58 LP |
1425 | if (r < 0) |
1426 | return r; | |
1427 | break; | |
1428 | ||
1429 | default: | |
1430 | break; | |
1431 | } | |
1432 | ||
1433 | r = home_store_header_identity_luks(new_home, &setup, header_home); | |
1434 | if (r < 0) | |
1435 | return r; | |
1436 | ||
1437 | r = home_store_embedded_identity(new_home, setup.root_fd, h->uid, embedded_home); | |
1438 | if (r < 0) | |
1439 | return r; | |
1440 | ||
1441 | r = home_extend_embedded_identity(new_home, h, &setup); | |
1442 | if (r < 0) | |
1443 | return r; | |
1444 | ||
1445 | r = home_sync_and_statfs(setup.root_fd, NULL); | |
1446 | if (r < 0) | |
1447 | return r; | |
1448 | ||
1449 | r = home_setup_undo(&setup); | |
1450 | if (r < 0) | |
1451 | return r; | |
1452 | ||
1453 | log_info("Everything completed."); | |
1454 | ||
1455 | *ret_home = TAKE_PTR(new_home); | |
1456 | return 1; | |
1457 | } | |
1458 | ||
1459 | static int home_inspect(UserRecord *h, UserRecord **ret_home) { | |
1460 | _cleanup_(user_record_unrefp) UserRecord *header_home = NULL, *new_home = NULL; | |
1461 | _cleanup_(home_setup_undo) HomeSetup setup = HOME_SETUP_INIT; | |
7b78db28 | 1462 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
70a5db58 LP |
1463 | bool already_activated = false; |
1464 | int r; | |
1465 | ||
1466 | assert(h); | |
1467 | assert(ret_home); | |
1468 | ||
7b78db28 | 1469 | r = user_record_authenticate(h, h, &cache, /* strict_verify= */ false); |
70a5db58 LP |
1470 | if (r < 0) |
1471 | return r; | |
1472 | ||
1473 | r = home_validate_update(h, &setup); | |
1474 | if (r < 0) | |
1475 | return r; | |
1476 | ||
1477 | already_activated = r > 0; | |
1478 | ||
7b78db28 | 1479 | r = home_prepare(h, already_activated, &cache, &setup, &header_home); |
70a5db58 LP |
1480 | if (r < 0) |
1481 | return r; | |
1482 | ||
7b78db28 | 1483 | r = home_load_embedded_identity(h, setup.root_fd, header_home, USER_RECONCILE_ANY, &cache, NULL, &new_home); |
70a5db58 LP |
1484 | if (r < 0) |
1485 | return r; | |
1486 | ||
1487 | r = home_extend_embedded_identity(new_home, h, &setup); | |
1488 | if (r < 0) | |
1489 | return r; | |
1490 | ||
1491 | r = home_setup_undo(&setup); | |
1492 | if (r < 0) | |
1493 | return r; | |
1494 | ||
1495 | log_info("Everything completed."); | |
1496 | ||
1497 | *ret_home = TAKE_PTR(new_home); | |
1498 | return 1; | |
1499 | } | |
1500 | ||
1501 | static int home_lock(UserRecord *h) { | |
1502 | int r; | |
1503 | ||
1504 | assert(h); | |
1505 | ||
1506 | if (!h->user_name) | |
1507 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record incomplete, refusing."); | |
1508 | if (user_record_storage(h) != USER_LUKS) | |
1509 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Locking home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1510 | ||
1511 | r = user_record_test_home_directory_and_warn(h); | |
1512 | if (r < 0) | |
1513 | return r; | |
1514 | if (r != USER_TEST_MOUNTED) | |
1515 | return log_error_errno(SYNTHETIC_ERRNO(ENOEXEC), "Home directory of %s is not mounted, can't lock.", h->user_name); | |
1516 | ||
1517 | r = home_lock_luks(h); | |
1518 | if (r < 0) | |
1519 | return r; | |
1520 | ||
1521 | log_info("Everything completed."); | |
1522 | return 1; | |
1523 | } | |
1524 | ||
1525 | static int home_unlock(UserRecord *h) { | |
7b78db28 | 1526 | _cleanup_(password_cache_free) PasswordCache cache = {}; |
70a5db58 LP |
1527 | int r; |
1528 | ||
1529 | assert(h); | |
1530 | ||
1531 | if (!h->user_name) | |
1532 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "User record incomplete, refusing."); | |
1533 | if (user_record_storage(h) != USER_LUKS) | |
1534 | return log_error_errno(SYNTHETIC_ERRNO(ENOTTY), "Unlocking home directories of type '%s' currently not supported.", user_storage_to_string(user_record_storage(h))); | |
1535 | ||
1536 | /* Note that we don't check if $HOME is actually mounted, since we want to avoid disk accesses on | |
1537 | * that mount until we have resumed the device. */ | |
1538 | ||
7b78db28 | 1539 | r = user_record_authenticate(h, h, &cache, /* strict_verify= */ false); |
70a5db58 LP |
1540 | if (r < 0) |
1541 | return r; | |
1542 | ||
7b78db28 | 1543 | r = home_unlock_luks(h, &cache); |
70a5db58 LP |
1544 | if (r < 0) |
1545 | return r; | |
1546 | ||
1547 | log_info("Everything completed."); | |
1548 | return 1; | |
1549 | } | |
1550 | ||
1551 | static int run(int argc, char *argv[]) { | |
1552 | _cleanup_(user_record_unrefp) UserRecord *home = NULL, *new_home = NULL; | |
1553 | _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; | |
1554 | _cleanup_(fclosep) FILE *opened_file = NULL; | |
1555 | unsigned line = 0, column = 0; | |
1556 | const char *json_path = NULL; | |
1557 | FILE *json_file; | |
1558 | usec_t start; | |
1559 | int r; | |
1560 | ||
1561 | start = now(CLOCK_MONOTONIC); | |
1562 | ||
1563 | log_setup_service(); | |
1564 | ||
1565 | umask(0022); | |
1566 | ||
1567 | if (argc < 2 || argc > 3) | |
1568 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program takes one or two arguments."); | |
1569 | ||
1570 | if (argc > 2) { | |
1571 | json_path = argv[2]; | |
1572 | ||
1573 | opened_file = fopen(json_path, "re"); | |
1574 | if (!opened_file) | |
1575 | return log_error_errno(errno, "Failed to open %s: %m", json_path); | |
1576 | ||
1577 | json_file = opened_file; | |
1578 | } else { | |
1579 | json_path = "<stdin>"; | |
1580 | json_file = stdin; | |
1581 | } | |
1582 | ||
1583 | r = json_parse_file(json_file, json_path, JSON_PARSE_SENSITIVE, &v, &line, &column); | |
1584 | if (r < 0) | |
1585 | return log_error_errno(r, "[%s:%u:%u] Failed to parse JSON data: %m", json_path, line, column); | |
1586 | ||
1587 | home = user_record_new(); | |
1588 | if (!home) | |
1589 | return log_oom(); | |
1590 | ||
1591 | r = user_record_load(home, v, USER_RECORD_LOAD_FULL|USER_RECORD_LOG); | |
1592 | if (r < 0) | |
1593 | return r; | |
1594 | ||
1595 | /* Well known return values of these operations, that systemd-homed knows and converts to proper D-Bus errors: | |
1596 | * | |
162392b7 ZJS |
1597 | * EMSGSIZE → file systems of this type cannot be shrunk |
1598 | * ETXTBSY → file systems of this type can only be shrunk offline | |
70a5db58 LP |
1599 | * ERANGE → file system size too small |
1600 | * ENOLINK → system does not support selected storage backend | |
1601 | * EPROTONOSUPPORT → system does not support selected file system | |
1602 | * ENOTTY → operation not support on this storage | |
1603 | * ESOCKTNOSUPPORT → operation not support on this file system | |
1604 | * ENOKEY → password incorrect (or not sufficient, or not supplied) | |
1605 | * EBADSLT → similar, but PKCS#11 device is defined and might be able to provide password, if it was plugged in which it is not | |
7b78db28 | 1606 | * ENOANO → suitable PKCS#11/FIDO2 device found, but PIN is missing to unlock it |
70a5db58 | 1607 | * ERFKILL → suitable PKCS#11 device found, but OK to ask for on-device interactive authentication not given |
7b78db28 LP |
1608 | * EMEDIUMTYPE → suitable FIDO2 device found, but OK to ask for user presence not given |
1609 | * ENOSTR → suitable FIDO2 device found, but user didn't react to action request on token quickly enough | |
1610 | * EOWNERDEAD → suitable PKCS#11/FIDO2 device found, but its PIN is locked | |
1611 | * ENOLCK → suitable PKCS#11/FIDO2 device found, but PIN incorrect | |
70a5db58 LP |
1612 | * ETOOMANYREFS → suitable PKCS#11 device found, but PIN incorrect, and only few tries left |
1613 | * EUCLEAN → suitable PKCS#11 device found, but PIN incorrect, and only one try left | |
1614 | * EBUSY → file system is currently active | |
1615 | * ENOEXEC → file system is currently not active | |
1616 | * ENOSPC → not enough disk space for operation | |
cbffdcec | 1617 | * EKEYREVOKED → user record has not suitable hashed password or pkcs#11 entry, we cannot authenticate |
70a5db58 LP |
1618 | */ |
1619 | ||
1620 | if (streq(argv[1], "activate")) | |
1621 | r = home_activate(home, &new_home); | |
1622 | else if (streq(argv[1], "deactivate")) | |
1623 | r = home_deactivate(home, false); | |
1624 | else if (streq(argv[1], "deactivate-force")) | |
1625 | r = home_deactivate(home, true); | |
1626 | else if (streq(argv[1], "create")) | |
1627 | r = home_create(home, &new_home); | |
1628 | else if (streq(argv[1], "remove")) | |
1629 | r = home_remove(home); | |
1630 | else if (streq(argv[1], "update")) | |
1631 | r = home_update(home, &new_home); | |
1632 | else if (streq(argv[1], "resize")) | |
1633 | r = home_resize(home, &new_home); | |
1634 | else if (streq(argv[1], "passwd")) | |
1635 | r = home_passwd(home, &new_home); | |
1636 | else if (streq(argv[1], "inspect")) | |
1637 | r = home_inspect(home, &new_home); | |
1638 | else if (streq(argv[1], "lock")) | |
1639 | r = home_lock(home); | |
1640 | else if (streq(argv[1], "unlock")) | |
1641 | r = home_unlock(home); | |
1642 | else | |
1643 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown verb '%s'.", argv[1]); | |
1644 | if (r == -ENOKEY && !strv_isempty(home->password)) { /* There were passwords specified but they were incorrect */ | |
1645 | usec_t end, n, d; | |
1646 | ||
1647 | /* Make sure bad password replies always take at least 3s, and if longer multiples of 3s, so | |
1648 | * that it's not clear how long we actually needed for our calculations. */ | |
1649 | n = now(CLOCK_MONOTONIC); | |
1650 | assert(n >= start); | |
1651 | ||
1652 | d = usec_sub_unsigned(n, start); | |
1653 | if (d > BAD_PASSWORD_DELAY_USEC) | |
1654 | end = start + DIV_ROUND_UP(d, BAD_PASSWORD_DELAY_USEC) * BAD_PASSWORD_DELAY_USEC; | |
1655 | else | |
1656 | end = start + BAD_PASSWORD_DELAY_USEC; | |
1657 | ||
1658 | if (n < end) | |
1659 | (void) usleep(usec_sub_unsigned(end, n)); | |
1660 | } | |
1661 | if (r < 0) | |
1662 | return r; | |
1663 | ||
1664 | /* We always pass the new record back, regardless if it changed or not. This allows our caller to | |
1665 | * prepare a fresh record, send to us, and only if it works use it without having to keep a local | |
1666 | * copy. */ | |
1667 | if (new_home) | |
1668 | json_variant_dump(new_home->json, JSON_FORMAT_NEWLINE, stdout, NULL); | |
1669 | ||
1670 | return 0; | |
1671 | } | |
1672 | ||
1673 | DEFINE_MAIN_FUNCTION(run); |