Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
4e7a5dcd SW |
3 | |
4 | #include <linux/module.h> | |
5 | #include <linux/err.h> | |
d45d0d97 | 6 | #include <linux/slab.h> |
4e7a5dcd | 7 | |
3d14c5d2 YS |
8 | #include <linux/ceph/types.h> |
9 | #include <linux/ceph/decode.h> | |
10 | #include <linux/ceph/libceph.h> | |
11 | #include <linux/ceph/messenger.h> | |
4e7a5dcd | 12 | #include "auth_none.h" |
ec0994e4 | 13 | #include "auth_x.h" |
4e7a5dcd | 14 | |
4e7a5dcd SW |
15 | |
16 | /* | |
17 | * get protocol handler | |
18 | */ | |
19 | static u32 supported_protocols[] = { | |
ec0994e4 SW |
20 | CEPH_AUTH_NONE, |
21 | CEPH_AUTH_CEPHX | |
4e7a5dcd SW |
22 | }; |
23 | ||
59711f9e | 24 | static int init_protocol(struct ceph_auth_client *ac, int proto) |
4e7a5dcd | 25 | { |
59711f9e ID |
26 | dout("%s proto %d\n", __func__, proto); |
27 | ||
28 | switch (proto) { | |
4e7a5dcd SW |
29 | case CEPH_AUTH_NONE: |
30 | return ceph_auth_none_init(ac); | |
ec0994e4 SW |
31 | case CEPH_AUTH_CEPHX: |
32 | return ceph_x_init(ac); | |
4e7a5dcd | 33 | default: |
59711f9e ID |
34 | pr_err("bad auth protocol %d\n", proto); |
35 | return -EINVAL; | |
4e7a5dcd SW |
36 | } |
37 | } | |
38 | ||
03af4c7b | 39 | void ceph_auth_set_global_id(struct ceph_auth_client *ac, u64 global_id) |
61ca49a9 ID |
40 | { |
41 | dout("%s global_id %llu\n", __func__, global_id); | |
42 | ||
43 | if (!global_id) | |
44 | pr_err("got zero global_id\n"); | |
45 | ||
46 | if (ac->global_id && global_id != ac->global_id) | |
47 | pr_err("global_id changed from %llu to %llu\n", ac->global_id, | |
48 | global_id); | |
49 | ||
50 | ac->global_id = global_id; | |
51 | } | |
52 | ||
4e7a5dcd SW |
53 | /* |
54 | * setup, teardown. | |
55 | */ | |
00498b99 ID |
56 | struct ceph_auth_client *ceph_auth_init(const char *name, |
57 | const struct ceph_crypto_key *key, | |
58 | const int *con_modes) | |
4e7a5dcd SW |
59 | { |
60 | struct ceph_auth_client *ac; | |
4e7a5dcd | 61 | |
4e7a5dcd SW |
62 | ac = kzalloc(sizeof(*ac), GFP_NOFS); |
63 | if (!ac) | |
da6ebb4d | 64 | return ERR_PTR(-ENOMEM); |
4e7a5dcd | 65 | |
e9966076 | 66 | mutex_init(&ac->mutex); |
4e7a5dcd SW |
67 | ac->negotiating = true; |
68 | if (name) | |
69 | ac->name = name; | |
70 | else | |
71 | ac->name = CEPH_AUTH_NAME_DEFAULT; | |
8323c3aa | 72 | ac->key = key; |
00498b99 ID |
73 | ac->preferred_mode = con_modes[0]; |
74 | ac->fallback_mode = con_modes[1]; | |
75 | ||
76 | dout("%s name '%s' preferred_mode %d fallback_mode %d\n", __func__, | |
77 | ac->name, ac->preferred_mode, ac->fallback_mode); | |
4e7a5dcd | 78 | return ac; |
4e7a5dcd SW |
79 | } |
80 | ||
81 | void ceph_auth_destroy(struct ceph_auth_client *ac) | |
82 | { | |
83 | dout("auth_destroy %p\n", ac); | |
84 | if (ac->ops) | |
85 | ac->ops->destroy(ac); | |
86 | kfree(ac); | |
87 | } | |
88 | ||
89 | /* | |
90 | * Reset occurs when reconnecting to the monitor. | |
91 | */ | |
92 | void ceph_auth_reset(struct ceph_auth_client *ac) | |
93 | { | |
e9966076 | 94 | mutex_lock(&ac->mutex); |
4e7a5dcd SW |
95 | dout("auth_reset %p\n", ac); |
96 | if (ac->ops && !ac->negotiating) | |
97 | ac->ops->reset(ac); | |
98 | ac->negotiating = true; | |
e9966076 | 99 | mutex_unlock(&ac->mutex); |
4e7a5dcd SW |
100 | } |
101 | ||
f01d5cb2 ID |
102 | /* |
103 | * EntityName, not to be confused with entity_name_t | |
104 | */ | |
105 | int ceph_auth_entity_name_encode(const char *name, void **p, void *end) | |
4e7a5dcd SW |
106 | { |
107 | int len = strlen(name); | |
108 | ||
109 | if (*p + 2*sizeof(u32) + len > end) | |
110 | return -ERANGE; | |
111 | ceph_encode_32(p, CEPH_ENTITY_TYPE_CLIENT); | |
112 | ceph_encode_32(p, len); | |
113 | ceph_encode_copy(p, name, len); | |
114 | return 0; | |
115 | } | |
116 | ||
117 | /* | |
118 | * Initiate protocol negotiation with monitor. Include entity name | |
119 | * and list supported protocols. | |
120 | */ | |
121 | int ceph_auth_build_hello(struct ceph_auth_client *ac, void *buf, size_t len) | |
122 | { | |
123 | struct ceph_mon_request_header *monhdr = buf; | |
124 | void *p = monhdr + 1, *end = buf + len, *lenp; | |
125 | int i, num; | |
126 | int ret; | |
127 | ||
e9966076 | 128 | mutex_lock(&ac->mutex); |
4e7a5dcd SW |
129 | dout("auth_build_hello\n"); |
130 | monhdr->have_version = 0; | |
131 | monhdr->session_mon = cpu_to_le16(-1); | |
132 | monhdr->session_mon_tid = 0; | |
133 | ||
fdc723e7 | 134 | ceph_encode_32(&p, CEPH_AUTH_UNKNOWN); /* no protocol, yet */ |
4e7a5dcd SW |
135 | |
136 | lenp = p; | |
137 | p += sizeof(u32); | |
138 | ||
07c8739c SW |
139 | ceph_decode_need(&p, end, 1 + sizeof(u32), bad); |
140 | ceph_encode_8(&p, 1); | |
4e7a5dcd SW |
141 | num = ARRAY_SIZE(supported_protocols); |
142 | ceph_encode_32(&p, num); | |
07c8739c | 143 | ceph_decode_need(&p, end, num * sizeof(u32), bad); |
4e7a5dcd SW |
144 | for (i = 0; i < num; i++) |
145 | ceph_encode_32(&p, supported_protocols[i]); | |
146 | ||
f01d5cb2 | 147 | ret = ceph_auth_entity_name_encode(ac->name, &p, end); |
4e7a5dcd | 148 | if (ret < 0) |
e9966076 | 149 | goto out; |
4e7a5dcd SW |
150 | ceph_decode_need(&p, end, sizeof(u64), bad); |
151 | ceph_encode_64(&p, ac->global_id); | |
152 | ||
153 | ceph_encode_32(&lenp, p - lenp - sizeof(u32)); | |
e9966076 SW |
154 | ret = p - buf; |
155 | out: | |
156 | mutex_unlock(&ac->mutex); | |
157 | return ret; | |
4e7a5dcd SW |
158 | |
159 | bad: | |
e9966076 SW |
160 | ret = -ERANGE; |
161 | goto out; | |
4e7a5dcd SW |
162 | } |
163 | ||
59711f9e ID |
164 | static int build_request(struct ceph_auth_client *ac, bool add_header, |
165 | void *buf, int buf_len) | |
9bd2e6f8 | 166 | { |
59711f9e ID |
167 | void *end = buf + buf_len; |
168 | void *p; | |
9bd2e6f8 SW |
169 | int ret; |
170 | ||
59711f9e ID |
171 | p = buf; |
172 | if (add_header) { | |
173 | /* struct ceph_mon_request_header + protocol */ | |
174 | ceph_encode_64_safe(&p, end, 0, e_range); | |
175 | ceph_encode_16_safe(&p, end, -1, e_range); | |
176 | ceph_encode_64_safe(&p, end, 0, e_range); | |
177 | ceph_encode_32_safe(&p, end, ac->protocol, e_range); | |
178 | } | |
9bd2e6f8 | 179 | |
59711f9e | 180 | ceph_encode_need(&p, end, sizeof(u32), e_range); |
9bd2e6f8 SW |
181 | ret = ac->ops->build_request(ac, p + sizeof(u32), end); |
182 | if (ret < 0) { | |
59711f9e ID |
183 | pr_err("auth protocol '%s' building request failed: %d\n", |
184 | ceph_auth_proto_name(ac->protocol), ret); | |
185 | return ret; | |
9bd2e6f8 SW |
186 | } |
187 | dout(" built request %d bytes\n", ret); | |
188 | ceph_encode_32(&p, ret); | |
59711f9e ID |
189 | return p + ret - buf; |
190 | ||
191 | e_range: | |
192 | return -ERANGE; | |
9bd2e6f8 SW |
193 | } |
194 | ||
4e7a5dcd SW |
195 | /* |
196 | * Handle auth message from monitor. | |
197 | */ | |
198 | int ceph_handle_auth_reply(struct ceph_auth_client *ac, | |
199 | void *buf, size_t len, | |
200 | void *reply_buf, size_t reply_len) | |
201 | { | |
202 | void *p = buf; | |
203 | void *end = buf + len; | |
204 | int protocol; | |
205 | s32 result; | |
206 | u64 global_id; | |
207 | void *payload, *payload_end; | |
208 | int payload_len; | |
209 | char *result_msg; | |
210 | int result_msg_len; | |
211 | int ret = -EINVAL; | |
212 | ||
e9966076 | 213 | mutex_lock(&ac->mutex); |
4e7a5dcd SW |
214 | dout("handle_auth_reply %p %p\n", p, end); |
215 | ceph_decode_need(&p, end, sizeof(u32) * 3 + sizeof(u64), bad); | |
216 | protocol = ceph_decode_32(&p); | |
217 | result = ceph_decode_32(&p); | |
218 | global_id = ceph_decode_64(&p); | |
219 | payload_len = ceph_decode_32(&p); | |
220 | payload = p; | |
221 | p += payload_len; | |
222 | ceph_decode_need(&p, end, sizeof(u32), bad); | |
223 | result_msg_len = ceph_decode_32(&p); | |
224 | result_msg = p; | |
225 | p += result_msg_len; | |
226 | if (p != end) | |
227 | goto bad; | |
228 | ||
229 | dout(" result %d '%.*s' gid %llu len %d\n", result, result_msg_len, | |
230 | result_msg, global_id, payload_len); | |
231 | ||
232 | payload_end = payload + payload_len; | |
233 | ||
4e7a5dcd | 234 | if (ac->negotiating) { |
dc14657c YS |
235 | /* server does not support our protocols? */ |
236 | if (!protocol && result < 0) { | |
237 | ret = result; | |
238 | goto out; | |
239 | } | |
4e7a5dcd SW |
240 | /* set up (new) protocol handler? */ |
241 | if (ac->protocol && ac->protocol != protocol) { | |
242 | ac->ops->destroy(ac); | |
243 | ac->protocol = 0; | |
244 | ac->ops = NULL; | |
245 | } | |
246 | if (ac->protocol != protocol) { | |
59711f9e | 247 | ret = init_protocol(ac, protocol); |
4e7a5dcd | 248 | if (ret) { |
59711f9e ID |
249 | pr_err("auth protocol '%s' init failed: %d\n", |
250 | ceph_auth_proto_name(protocol), ret); | |
4e7a5dcd SW |
251 | goto out; |
252 | } | |
253 | } | |
9bd2e6f8 SW |
254 | |
255 | ac->negotiating = false; | |
4e7a5dcd SW |
256 | } |
257 | ||
3c0d0894 ID |
258 | if (result) { |
259 | pr_err("auth protocol '%s' mauth authentication failed: %d\n", | |
260 | ceph_auth_proto_name(ac->protocol), result); | |
261 | ret = result; | |
262 | goto out; | |
263 | } | |
264 | ||
03af4c7b | 265 | ret = ac->ops->handle_reply(ac, global_id, payload, payload_end, |
285ea34f | 266 | NULL, NULL, NULL, NULL); |
61ca49a9 | 267 | if (ret == -EAGAIN) { |
59711f9e | 268 | ret = build_request(ac, true, reply_buf, reply_len); |
61ca49a9 ID |
269 | goto out; |
270 | } else if (ret) { | |
61ca49a9 ID |
271 | goto out; |
272 | } | |
273 | ||
4e7a5dcd | 274 | out: |
e9966076 | 275 | mutex_unlock(&ac->mutex); |
4e7a5dcd | 276 | return ret; |
e9966076 SW |
277 | |
278 | bad: | |
279 | pr_err("failed to decode auth msg\n"); | |
280 | ret = -EINVAL; | |
281 | goto out; | |
4e7a5dcd SW |
282 | } |
283 | ||
9bd2e6f8 SW |
284 | int ceph_build_auth(struct ceph_auth_client *ac, |
285 | void *msg_buf, size_t msg_len) | |
286 | { | |
e9966076 SW |
287 | int ret = 0; |
288 | ||
289 | mutex_lock(&ac->mutex); | |
464691bd | 290 | if (ac->ops->should_authenticate(ac)) |
59711f9e | 291 | ret = build_request(ac, true, msg_buf, msg_len); |
e9966076 SW |
292 | mutex_unlock(&ac->mutex); |
293 | return ret; | |
9bd2e6f8 | 294 | } |
4e7a5dcd | 295 | |
9bd2e6f8 SW |
296 | int ceph_auth_is_authenticated(struct ceph_auth_client *ac) |
297 | { | |
e9966076 SW |
298 | int ret = 0; |
299 | ||
300 | mutex_lock(&ac->mutex); | |
301 | if (ac->ops) | |
302 | ret = ac->ops->is_authenticated(ac); | |
303 | mutex_unlock(&ac->mutex); | |
304 | return ret; | |
9bd2e6f8 | 305 | } |
27859f97 SW |
306 | EXPORT_SYMBOL(ceph_auth_is_authenticated); |
307 | ||
cd1a677c ID |
308 | int __ceph_auth_get_authorizer(struct ceph_auth_client *ac, |
309 | struct ceph_auth_handshake *auth, | |
310 | int peer_type, bool force_new, | |
311 | int *proto, int *pref_mode, int *fallb_mode) | |
312 | { | |
313 | int ret; | |
314 | ||
315 | mutex_lock(&ac->mutex); | |
316 | if (force_new && auth->authorizer) { | |
317 | ceph_auth_destroy_authorizer(auth->authorizer); | |
318 | auth->authorizer = NULL; | |
319 | } | |
320 | if (!auth->authorizer) | |
321 | ret = ac->ops->create_authorizer(ac, peer_type, auth); | |
322 | else if (ac->ops->update_authorizer) | |
323 | ret = ac->ops->update_authorizer(ac, peer_type, auth); | |
324 | else | |
325 | ret = 0; | |
326 | if (ret) | |
327 | goto out; | |
328 | ||
329 | *proto = ac->protocol; | |
330 | if (pref_mode && fallb_mode) { | |
331 | *pref_mode = ac->preferred_mode; | |
332 | *fallb_mode = ac->fallback_mode; | |
333 | } | |
334 | ||
335 | out: | |
336 | mutex_unlock(&ac->mutex); | |
337 | return ret; | |
338 | } | |
339 | EXPORT_SYMBOL(__ceph_auth_get_authorizer); | |
340 | ||
6c1ea260 | 341 | void ceph_auth_destroy_authorizer(struct ceph_authorizer *a) |
27859f97 | 342 | { |
6c1ea260 | 343 | a->destroy(a); |
27859f97 SW |
344 | } |
345 | EXPORT_SYMBOL(ceph_auth_destroy_authorizer); | |
346 | ||
6daca13d ID |
347 | int ceph_auth_add_authorizer_challenge(struct ceph_auth_client *ac, |
348 | struct ceph_authorizer *a, | |
349 | void *challenge_buf, | |
350 | int challenge_buf_len) | |
351 | { | |
352 | int ret = 0; | |
353 | ||
354 | mutex_lock(&ac->mutex); | |
355 | if (ac->ops && ac->ops->add_authorizer_challenge) | |
356 | ret = ac->ops->add_authorizer_challenge(ac, a, challenge_buf, | |
357 | challenge_buf_len); | |
358 | mutex_unlock(&ac->mutex); | |
359 | return ret; | |
360 | } | |
361 | EXPORT_SYMBOL(ceph_auth_add_authorizer_challenge); | |
362 | ||
27859f97 | 363 | int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac, |
285ea34f ID |
364 | struct ceph_authorizer *a, |
365 | void *reply, int reply_len, | |
366 | u8 *session_key, int *session_key_len, | |
367 | u8 *con_secret, int *con_secret_len) | |
27859f97 | 368 | { |
e9966076 SW |
369 | int ret = 0; |
370 | ||
371 | mutex_lock(&ac->mutex); | |
27859f97 | 372 | if (ac->ops && ac->ops->verify_authorizer_reply) |
285ea34f ID |
373 | ret = ac->ops->verify_authorizer_reply(ac, a, |
374 | reply, reply_len, session_key, session_key_len, | |
375 | con_secret, con_secret_len); | |
e9966076 SW |
376 | mutex_unlock(&ac->mutex); |
377 | return ret; | |
27859f97 SW |
378 | } |
379 | EXPORT_SYMBOL(ceph_auth_verify_authorizer_reply); | |
380 | ||
381 | void ceph_auth_invalidate_authorizer(struct ceph_auth_client *ac, int peer_type) | |
382 | { | |
e9966076 | 383 | mutex_lock(&ac->mutex); |
27859f97 SW |
384 | if (ac->ops && ac->ops->invalidate_authorizer) |
385 | ac->ops->invalidate_authorizer(ac, peer_type); | |
e9966076 | 386 | mutex_unlock(&ac->mutex); |
27859f97 SW |
387 | } |
388 | EXPORT_SYMBOL(ceph_auth_invalidate_authorizer); | |
cd1a677c ID |
389 | |
390 | /* | |
391 | * msgr2 authentication | |
392 | */ | |
393 | ||
394 | static bool contains(const int *arr, int cnt, int val) | |
395 | { | |
396 | int i; | |
397 | ||
398 | for (i = 0; i < cnt; i++) { | |
399 | if (arr[i] == val) | |
400 | return true; | |
401 | } | |
402 | ||
403 | return false; | |
404 | } | |
405 | ||
406 | static int encode_con_modes(void **p, void *end, int pref_mode, int fallb_mode) | |
407 | { | |
408 | WARN_ON(pref_mode == CEPH_CON_MODE_UNKNOWN); | |
409 | if (fallb_mode != CEPH_CON_MODE_UNKNOWN) { | |
410 | ceph_encode_32_safe(p, end, 2, e_range); | |
411 | ceph_encode_32_safe(p, end, pref_mode, e_range); | |
412 | ceph_encode_32_safe(p, end, fallb_mode, e_range); | |
413 | } else { | |
414 | ceph_encode_32_safe(p, end, 1, e_range); | |
415 | ceph_encode_32_safe(p, end, pref_mode, e_range); | |
416 | } | |
417 | ||
418 | return 0; | |
419 | ||
420 | e_range: | |
421 | return -ERANGE; | |
422 | } | |
423 | ||
424 | /* | |
425 | * Similar to ceph_auth_build_hello(). | |
426 | */ | |
427 | int ceph_auth_get_request(struct ceph_auth_client *ac, void *buf, int buf_len) | |
428 | { | |
429 | int proto = ac->key ? CEPH_AUTH_CEPHX : CEPH_AUTH_NONE; | |
430 | void *end = buf + buf_len; | |
431 | void *lenp; | |
432 | void *p; | |
433 | int ret; | |
434 | ||
435 | mutex_lock(&ac->mutex); | |
436 | if (ac->protocol == CEPH_AUTH_UNKNOWN) { | |
437 | ret = init_protocol(ac, proto); | |
438 | if (ret) { | |
439 | pr_err("auth protocol '%s' init failed: %d\n", | |
440 | ceph_auth_proto_name(proto), ret); | |
441 | goto out; | |
442 | } | |
443 | } else { | |
444 | WARN_ON(ac->protocol != proto); | |
445 | ac->ops->reset(ac); | |
446 | } | |
447 | ||
448 | p = buf; | |
449 | ceph_encode_32_safe(&p, end, ac->protocol, e_range); | |
450 | ret = encode_con_modes(&p, end, ac->preferred_mode, ac->fallback_mode); | |
451 | if (ret) | |
452 | goto out; | |
453 | ||
454 | lenp = p; | |
455 | p += 4; /* space for len */ | |
456 | ||
457 | ceph_encode_8_safe(&p, end, CEPH_AUTH_MODE_MON, e_range); | |
458 | ret = ceph_auth_entity_name_encode(ac->name, &p, end); | |
459 | if (ret) | |
460 | goto out; | |
461 | ||
462 | ceph_encode_64_safe(&p, end, ac->global_id, e_range); | |
463 | ceph_encode_32(&lenp, p - lenp - 4); | |
464 | ret = p - buf; | |
465 | ||
466 | out: | |
467 | mutex_unlock(&ac->mutex); | |
468 | return ret; | |
469 | ||
470 | e_range: | |
471 | ret = -ERANGE; | |
472 | goto out; | |
473 | } | |
474 | ||
475 | int ceph_auth_handle_reply_more(struct ceph_auth_client *ac, void *reply, | |
476 | int reply_len, void *buf, int buf_len) | |
477 | { | |
478 | int ret; | |
479 | ||
480 | mutex_lock(&ac->mutex); | |
03af4c7b | 481 | ret = ac->ops->handle_reply(ac, 0, reply, reply + reply_len, |
cd1a677c ID |
482 | NULL, NULL, NULL, NULL); |
483 | if (ret == -EAGAIN) | |
484 | ret = build_request(ac, false, buf, buf_len); | |
485 | else | |
486 | WARN_ON(ret >= 0); | |
487 | mutex_unlock(&ac->mutex); | |
488 | return ret; | |
489 | } | |
490 | ||
491 | int ceph_auth_handle_reply_done(struct ceph_auth_client *ac, | |
492 | u64 global_id, void *reply, int reply_len, | |
493 | u8 *session_key, int *session_key_len, | |
494 | u8 *con_secret, int *con_secret_len) | |
495 | { | |
496 | int ret; | |
497 | ||
498 | mutex_lock(&ac->mutex); | |
03af4c7b | 499 | ret = ac->ops->handle_reply(ac, global_id, reply, reply + reply_len, |
cd1a677c ID |
500 | session_key, session_key_len, |
501 | con_secret, con_secret_len); | |
03af4c7b | 502 | WARN_ON(ret == -EAGAIN || ret > 0); |
cd1a677c ID |
503 | mutex_unlock(&ac->mutex); |
504 | return ret; | |
505 | } | |
506 | ||
507 | bool ceph_auth_handle_bad_method(struct ceph_auth_client *ac, | |
508 | int used_proto, int result, | |
509 | const int *allowed_protos, int proto_cnt, | |
510 | const int *allowed_modes, int mode_cnt) | |
511 | { | |
512 | mutex_lock(&ac->mutex); | |
513 | WARN_ON(used_proto != ac->protocol); | |
514 | ||
515 | if (result == -EOPNOTSUPP) { | |
516 | if (!contains(allowed_protos, proto_cnt, ac->protocol)) { | |
517 | pr_err("auth protocol '%s' not allowed\n", | |
518 | ceph_auth_proto_name(ac->protocol)); | |
519 | goto not_allowed; | |
520 | } | |
521 | if (!contains(allowed_modes, mode_cnt, ac->preferred_mode) && | |
522 | (ac->fallback_mode == CEPH_CON_MODE_UNKNOWN || | |
523 | !contains(allowed_modes, mode_cnt, ac->fallback_mode))) { | |
524 | pr_err("preferred mode '%s' not allowed\n", | |
525 | ceph_con_mode_name(ac->preferred_mode)); | |
526 | if (ac->fallback_mode == CEPH_CON_MODE_UNKNOWN) | |
527 | pr_err("no fallback mode\n"); | |
528 | else | |
529 | pr_err("fallback mode '%s' not allowed\n", | |
530 | ceph_con_mode_name(ac->fallback_mode)); | |
531 | goto not_allowed; | |
532 | } | |
533 | } | |
534 | ||
535 | WARN_ON(result == -EOPNOTSUPP || result >= 0); | |
536 | pr_err("auth protocol '%s' msgr authentication failed: %d\n", | |
537 | ceph_auth_proto_name(ac->protocol), result); | |
538 | ||
539 | mutex_unlock(&ac->mutex); | |
540 | return true; | |
541 | ||
542 | not_allowed: | |
543 | mutex_unlock(&ac->mutex); | |
544 | return false; | |
545 | } | |
546 | ||
547 | int ceph_auth_get_authorizer(struct ceph_auth_client *ac, | |
548 | struct ceph_auth_handshake *auth, | |
549 | int peer_type, void *buf, int *buf_len) | |
550 | { | |
551 | void *end = buf + *buf_len; | |
552 | int pref_mode, fallb_mode; | |
553 | int proto; | |
554 | void *p; | |
555 | int ret; | |
556 | ||
557 | ret = __ceph_auth_get_authorizer(ac, auth, peer_type, true, &proto, | |
558 | &pref_mode, &fallb_mode); | |
559 | if (ret) | |
560 | return ret; | |
561 | ||
562 | p = buf; | |
563 | ceph_encode_32_safe(&p, end, proto, e_range); | |
564 | ret = encode_con_modes(&p, end, pref_mode, fallb_mode); | |
565 | if (ret) | |
566 | return ret; | |
567 | ||
568 | ceph_encode_32_safe(&p, end, auth->authorizer_buf_len, e_range); | |
569 | *buf_len = p - buf; | |
570 | return 0; | |
571 | ||
572 | e_range: | |
573 | return -ERANGE; | |
574 | } | |
575 | EXPORT_SYMBOL(ceph_auth_get_authorizer); | |
576 | ||
577 | int ceph_auth_handle_svc_reply_more(struct ceph_auth_client *ac, | |
578 | struct ceph_auth_handshake *auth, | |
579 | void *reply, int reply_len, | |
580 | void *buf, int *buf_len) | |
581 | { | |
582 | void *end = buf + *buf_len; | |
583 | void *p; | |
584 | int ret; | |
585 | ||
586 | ret = ceph_auth_add_authorizer_challenge(ac, auth->authorizer, | |
587 | reply, reply_len); | |
588 | if (ret) | |
589 | return ret; | |
590 | ||
591 | p = buf; | |
592 | ceph_encode_32_safe(&p, end, auth->authorizer_buf_len, e_range); | |
593 | *buf_len = p - buf; | |
594 | return 0; | |
595 | ||
596 | e_range: | |
597 | return -ERANGE; | |
598 | } | |
599 | EXPORT_SYMBOL(ceph_auth_handle_svc_reply_more); | |
600 | ||
601 | int ceph_auth_handle_svc_reply_done(struct ceph_auth_client *ac, | |
602 | struct ceph_auth_handshake *auth, | |
603 | void *reply, int reply_len, | |
604 | u8 *session_key, int *session_key_len, | |
605 | u8 *con_secret, int *con_secret_len) | |
606 | { | |
607 | return ceph_auth_verify_authorizer_reply(ac, auth->authorizer, | |
608 | reply, reply_len, session_key, session_key_len, | |
609 | con_secret, con_secret_len); | |
610 | } | |
611 | EXPORT_SYMBOL(ceph_auth_handle_svc_reply_done); | |
612 | ||
613 | bool ceph_auth_handle_bad_authorizer(struct ceph_auth_client *ac, | |
614 | int peer_type, int used_proto, int result, | |
615 | const int *allowed_protos, int proto_cnt, | |
616 | const int *allowed_modes, int mode_cnt) | |
617 | { | |
618 | mutex_lock(&ac->mutex); | |
619 | WARN_ON(used_proto != ac->protocol); | |
620 | ||
621 | if (result == -EOPNOTSUPP) { | |
622 | if (!contains(allowed_protos, proto_cnt, ac->protocol)) { | |
623 | pr_err("auth protocol '%s' not allowed by %s\n", | |
624 | ceph_auth_proto_name(ac->protocol), | |
625 | ceph_entity_type_name(peer_type)); | |
626 | goto not_allowed; | |
627 | } | |
628 | if (!contains(allowed_modes, mode_cnt, ac->preferred_mode) && | |
629 | (ac->fallback_mode == CEPH_CON_MODE_UNKNOWN || | |
630 | !contains(allowed_modes, mode_cnt, ac->fallback_mode))) { | |
631 | pr_err("preferred mode '%s' not allowed by %s\n", | |
632 | ceph_con_mode_name(ac->preferred_mode), | |
633 | ceph_entity_type_name(peer_type)); | |
634 | if (ac->fallback_mode == CEPH_CON_MODE_UNKNOWN) | |
635 | pr_err("no fallback mode\n"); | |
636 | else | |
637 | pr_err("fallback mode '%s' not allowed by %s\n", | |
638 | ceph_con_mode_name(ac->fallback_mode), | |
639 | ceph_entity_type_name(peer_type)); | |
640 | goto not_allowed; | |
641 | } | |
642 | } | |
643 | ||
644 | WARN_ON(result == -EOPNOTSUPP || result >= 0); | |
645 | pr_err("auth protocol '%s' authorization to %s failed: %d\n", | |
646 | ceph_auth_proto_name(ac->protocol), | |
647 | ceph_entity_type_name(peer_type), result); | |
648 | ||
649 | if (ac->ops->invalidate_authorizer) | |
650 | ac->ops->invalidate_authorizer(ac, peer_type); | |
651 | ||
652 | mutex_unlock(&ac->mutex); | |
653 | return true; | |
654 | ||
655 | not_allowed: | |
656 | mutex_unlock(&ac->mutex); | |
657 | return false; | |
658 | } | |
659 | EXPORT_SYMBOL(ceph_auth_handle_bad_authorizer); |