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763cd6e3 RS |
1 | /* |
2 | Copyright (C) 2012 by Ronnie Sahlberg <ronniesahlberg@gmail.com> | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU Lesser General Public License as published by | |
6 | the Free Software Foundation; either version 2.1 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public License | |
15 | along with this program; if not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | /* | |
18 | * This file contains definitions for the built in ZDR implementation. | |
19 | * This is a very limited ZDR subset that can only marshal to/from a momory buffer, | |
20 | * i.e. zdrmem_create() buffers. | |
21 | * It aims to be compatible with normal rpcgen generated functions. | |
22 | */ | |
b1406276 RS |
23 | #ifdef WIN32 |
24 | #include "win32_compat.h" | |
833d5b9d | 25 | #endif |
763cd6e3 | 26 | |
0556ee05 RS |
27 | #ifdef AROS |
28 | #include "aros_compat.h" | |
29 | #endif | |
30 | ||
763cd6e3 RS |
31 | #include <stdlib.h> |
32 | #include <string.h> | |
b1406276 | 33 | #include <time.h> |
763cd6e3 RS |
34 | #include "libnfs-zdr.h" |
35 | ||
36 | struct opaque_auth _null_auth; | |
37 | ||
38 | bool_t libnfs_zdr_setpos(ZDR *zdrs, uint32_t pos) | |
39 | { | |
40 | zdrs->pos = pos; | |
242b81cf RS |
41 | |
42 | return TRUE; | |
763cd6e3 RS |
43 | } |
44 | ||
45 | uint32_t libnfs_zdr_getpos(ZDR *zdrs) | |
46 | { | |
47 | return zdrs->pos; | |
48 | } | |
49 | ||
50 | void libnfs_zdrmem_create(ZDR *zdrs, const caddr_t addr, uint32_t size, enum zdr_op xop) | |
51 | { | |
52 | zdrs->x_op = xop; | |
53 | zdrs->buf = addr; | |
54 | zdrs->size = size; | |
55 | zdrs->pos = 0; | |
56 | zdrs->mem = NULL; | |
57 | } | |
58 | ||
59 | static void *zdr_malloc(ZDR *zdrs, uint32_t size) | |
60 | { | |
61 | struct zdr_mem *mem; | |
62 | ||
63 | mem = malloc(sizeof(struct zdr_mem)); | |
64 | mem->next = zdrs->mem; | |
65 | mem->size = size; | |
66 | mem->buf = malloc(mem->size); | |
67 | zdrs->mem = mem; | |
68 | ||
69 | return mem->buf; | |
70 | } | |
71 | ||
72 | void libnfs_zdr_destroy(ZDR *zdrs) | |
73 | { | |
74 | while (zdrs->mem != NULL) { | |
75 | struct zdr_mem *mem = zdrs->mem->next; | |
76 | free(zdrs->mem->buf); | |
77 | free(zdrs->mem); | |
78 | zdrs->mem = mem; | |
79 | } | |
80 | } | |
81 | ||
82 | bool_t libnfs_zdr_u_int(ZDR *zdrs, uint32_t *u) | |
83 | { | |
84 | if (zdrs->pos + 4 > zdrs->size) { | |
85 | return FALSE; | |
86 | } | |
87 | ||
88 | switch (zdrs->x_op) { | |
89 | case ZDR_ENCODE: | |
90 | *(uint32_t *)&zdrs->buf[zdrs->pos] = htonl(*u); | |
91 | zdrs->pos += 4; | |
92 | return TRUE; | |
93 | break; | |
94 | case ZDR_DECODE: | |
95 | *u = ntohl(*(uint32_t *)&zdrs->buf[zdrs->pos]); | |
96 | zdrs->pos += 4; | |
97 | return TRUE; | |
98 | break; | |
99 | } | |
100 | ||
101 | return FALSE; | |
102 | } | |
103 | ||
104 | bool_t libnfs_zdr_int(ZDR *zdrs, int32_t *i) | |
105 | { | |
106 | return libnfs_zdr_u_int(zdrs, (uint32_t *)i); | |
107 | } | |
108 | ||
109 | bool_t libnfs_zdr_u_quad_t(ZDR *zdrs, uint64_t *u) | |
110 | { | |
111 | if (zdrs->pos + 8 > zdrs->size) { | |
112 | return FALSE; | |
113 | } | |
114 | ||
115 | switch (zdrs->x_op) { | |
116 | case ZDR_ENCODE: | |
117 | *(uint32_t *)&zdrs->buf[zdrs->pos] = htonl((*u >> 32)); | |
118 | zdrs->pos += 4; | |
119 | *(uint32_t *)&zdrs->buf[zdrs->pos] = htonl((*u & 0xffffffff)); | |
120 | zdrs->pos += 4; | |
121 | return TRUE; | |
122 | break; | |
123 | case ZDR_DECODE: | |
124 | *u = ntohl(*(uint32_t *)&zdrs->buf[zdrs->pos]); | |
125 | zdrs->pos += 4; | |
126 | *u <<= 32; | |
c81e7d89 | 127 | *u |= (uint32_t)ntohl(*(uint32_t *)&zdrs->buf[zdrs->pos]); |
763cd6e3 RS |
128 | zdrs->pos += 4; |
129 | return TRUE; | |
130 | break; | |
131 | } | |
132 | ||
133 | return FALSE; | |
134 | } | |
135 | ||
136 | bool_t libnfs_zdr_quad_t(ZDR *zdrs, int64_t *i) | |
137 | { | |
138 | return libnfs_zdr_u_quad_t(zdrs, (uint64_t *)i); | |
139 | } | |
140 | ||
141 | bool_t libnfs_zdr_bytes(ZDR *zdrs, char **bufp, uint32_t *size, uint32_t maxsize) | |
142 | { | |
143 | if (!libnfs_zdr_u_int(zdrs, size)) { | |
144 | return FALSE; | |
145 | } | |
146 | ||
147 | if (zdrs->pos + *size > zdrs->size) { | |
148 | return FALSE; | |
149 | } | |
150 | ||
151 | switch (zdrs->x_op) { | |
152 | case ZDR_ENCODE: | |
153 | memcpy(&zdrs->buf[zdrs->pos], *bufp, *size); | |
154 | zdrs->pos += *size; | |
155 | zdrs->pos = (zdrs->pos + 3) & ~3; | |
156 | return TRUE; | |
157 | case ZDR_DECODE: | |
158 | if (*bufp == NULL) { | |
159 | *bufp = zdr_malloc(zdrs, *size); | |
160 | } | |
161 | memcpy(*bufp, &zdrs->buf[zdrs->pos], *size); | |
162 | zdrs->pos += *size; | |
163 | zdrs->pos = (zdrs->pos + 3) & ~3; | |
164 | return TRUE; | |
165 | } | |
166 | ||
167 | return FALSE; | |
168 | } | |
169 | ||
170 | ||
442b829a | 171 | bool_t libnfs_zdr_enum(ZDR *zdrs, enum_t *e) |
763cd6e3 | 172 | { |
442b829a RS |
173 | bool_t ret; |
174 | int32_t i = *e; | |
175 | ||
176 | ret = libnfs_zdr_u_int(zdrs, (uint32_t *)&i); | |
177 | *e = i; | |
178 | ||
179 | return ret; | |
763cd6e3 RS |
180 | } |
181 | ||
182 | bool_t libnfs_zdr_bool(ZDR *zdrs, bool_t *b) | |
183 | { | |
184 | return libnfs_zdr_u_int(zdrs, (uint32_t *)b); | |
185 | } | |
186 | ||
187 | bool_t libnfs_zdr_void(void) | |
188 | { | |
189 | return TRUE; | |
190 | } | |
191 | ||
192 | bool_t libnfs_zdr_pointer(ZDR *zdrs, char **objp, uint32_t size, zdrproc_t proc) | |
193 | { | |
194 | bool_t more_data; | |
195 | ||
196 | more_data = (*objp != NULL); | |
197 | ||
198 | if (!libnfs_zdr_bool(zdrs, &more_data)) { | |
199 | return FALSE; | |
200 | } | |
201 | if (more_data == 0) { | |
202 | *objp = NULL; | |
203 | return TRUE; | |
204 | } | |
205 | ||
206 | if (zdrs->x_op == ZDR_DECODE) { | |
207 | *objp = zdr_malloc(zdrs, size); | |
208 | if (*objp == NULL) { | |
209 | return FALSE; | |
210 | } | |
211 | memset(*objp, 0, size); | |
212 | } | |
213 | return proc(zdrs, *objp); | |
214 | } | |
215 | ||
216 | bool_t libnfs_zdr_opaque(ZDR *zdrs, char *objp, uint32_t size) | |
217 | { | |
218 | switch (zdrs->x_op) { | |
219 | case ZDR_ENCODE: | |
220 | memcpy(&zdrs->buf[zdrs->pos], objp, size); | |
221 | zdrs->pos += size; | |
222 | zdrs->pos = (zdrs->pos + 3) & ~3; | |
223 | return TRUE; | |
224 | case ZDR_DECODE: | |
225 | memcpy(objp, &zdrs->buf[zdrs->pos], size); | |
226 | zdrs->pos += size; | |
227 | zdrs->pos = (zdrs->pos + 3) & ~3; | |
228 | return TRUE; | |
229 | } | |
230 | ||
231 | return FALSE; | |
232 | } | |
233 | ||
234 | bool_t libnfs_zdr_string(ZDR *zdrs, char **strp, uint32_t maxsize) | |
235 | { | |
236 | uint32_t size; | |
237 | ||
238 | if (zdrs->x_op == ZDR_ENCODE) { | |
239 | size = strlen(*strp); | |
240 | } | |
241 | ||
242 | if (!libnfs_zdr_u_int(zdrs, &size)) { | |
243 | return FALSE; | |
244 | } | |
245 | ||
246 | if (zdrs->pos + size > zdrs->size) { | |
247 | return FALSE; | |
248 | } | |
249 | ||
250 | switch (zdrs->x_op) { | |
251 | case ZDR_ENCODE: | |
252 | return libnfs_zdr_opaque(zdrs, *strp, size); | |
253 | case ZDR_DECODE: | |
254 | *strp = zdr_malloc(zdrs, size + 1); | |
255 | if (*strp == NULL) { | |
256 | return FALSE; | |
257 | } | |
258 | (*strp)[size] = 0; | |
259 | return libnfs_zdr_opaque(zdrs, *strp, size); | |
260 | } | |
261 | ||
262 | return FALSE; | |
263 | } | |
264 | ||
265 | bool_t libnfs_zdr_array(ZDR *zdrs, char **arrp, uint32_t *size, uint32_t maxsize, uint32_t elsize, zdrproc_t proc) | |
266 | { | |
267 | int i; | |
268 | ||
269 | if (!libnfs_zdr_u_int(zdrs, size)) { | |
270 | return FALSE; | |
271 | } | |
272 | ||
273 | if (zdrs->pos + *size * elsize > zdrs->size) { | |
274 | return FALSE; | |
275 | } | |
276 | ||
277 | if (zdrs->x_op == ZDR_DECODE) { | |
278 | *arrp = zdr_malloc(zdrs, *size * elsize); | |
279 | if (*arrp == NULL) { | |
280 | return FALSE; | |
281 | } | |
282 | memset(*arrp, 0, *size * elsize); | |
283 | } | |
284 | ||
285 | for (i = 0; i < *size; i++) { | |
5f08d03e | 286 | if (!proc(zdrs, *arrp + i * elsize)) { |
763cd6e3 RS |
287 | return FALSE; |
288 | } | |
289 | } | |
290 | return TRUE; | |
291 | } | |
292 | ||
293 | void libnfs_zdr_free(zdrproc_t proc, char *objp) | |
294 | { | |
295 | } | |
296 | ||
297 | static bool_t libnfs_opaque_auth(ZDR *zdrs, struct opaque_auth *auth) | |
298 | { | |
299 | if (!libnfs_zdr_u_int(zdrs, &auth->oa_flavor)) { | |
300 | return FALSE; | |
301 | } | |
302 | ||
020f1728 | 303 | if (!libnfs_zdr_bytes(zdrs, &auth->oa_base, &auth->oa_length, auth->oa_length)) { |
763cd6e3 RS |
304 | return FALSE; |
305 | } | |
306 | ||
307 | return TRUE; | |
308 | } | |
309 | ||
310 | static bool_t libnfs_rpc_call_body(ZDR *zdrs, struct call_body *cmb) | |
311 | { | |
aab6538b | 312 | if (!libnfs_zdr_u_int(zdrs, &cmb->rpcvers)) { |
763cd6e3 RS |
313 | return FALSE; |
314 | } | |
315 | ||
aab6538b | 316 | if (!libnfs_zdr_u_int(zdrs, &cmb->prog)) { |
763cd6e3 RS |
317 | return FALSE; |
318 | } | |
319 | ||
aab6538b | 320 | if (!libnfs_zdr_u_int(zdrs, &cmb->vers)) { |
763cd6e3 RS |
321 | return FALSE; |
322 | } | |
323 | ||
aab6538b | 324 | if (!libnfs_zdr_u_int(zdrs, &cmb->proc)) { |
763cd6e3 RS |
325 | return FALSE; |
326 | } | |
327 | ||
aab6538b | 328 | if (!libnfs_opaque_auth(zdrs, &cmb->cred)) { |
763cd6e3 RS |
329 | return FALSE; |
330 | } | |
331 | ||
aab6538b | 332 | if (!libnfs_opaque_auth(zdrs, &cmb->verf)) { |
763cd6e3 RS |
333 | return FALSE; |
334 | } | |
10a0ceaa RS |
335 | |
336 | return TRUE; | |
763cd6e3 RS |
337 | } |
338 | ||
339 | static bool_t libnfs_accepted_reply(ZDR *zdrs, struct accepted_reply *ar) | |
340 | { | |
aab6538b | 341 | if (!libnfs_opaque_auth(zdrs, &ar->verf)) { |
763cd6e3 RS |
342 | return FALSE; |
343 | } | |
344 | ||
aab6538b | 345 | if (!libnfs_zdr_u_int(zdrs, &ar->stat)) { |
763cd6e3 RS |
346 | return FALSE; |
347 | } | |
348 | ||
aab6538b | 349 | switch (ar->stat) { |
763cd6e3 | 350 | case SUCCESS: |
aab6538b | 351 | if (!ar->reply_data.results.proc(zdrs, ar->reply_data.results.where)) { |
763cd6e3 RS |
352 | return FALSE; |
353 | } | |
354 | return TRUE; | |
355 | case PROG_MISMATCH: | |
aab6538b | 356 | if (!libnfs_zdr_u_int(zdrs, &ar->reply_data.mismatch_info.low)) { |
763cd6e3 RS |
357 | return FALSE; |
358 | } | |
aab6538b | 359 | if (!libnfs_zdr_u_int(zdrs, &ar->reply_data.mismatch_info.high)) { |
763cd6e3 RS |
360 | return FALSE; |
361 | } | |
362 | return TRUE; | |
363 | default: | |
364 | return TRUE; | |
365 | } | |
366 | ||
367 | return FALSE; | |
368 | } | |
369 | ||
aab6538b | 370 | static bool_t libnfs_rejected_reply(ZDR *zdrs, struct rejected_reply *rr) |
763cd6e3 | 371 | { |
aab6538b RS |
372 | if (!libnfs_zdr_u_int(zdrs, &rr->stat)) { |
373 | return FALSE; | |
374 | } | |
375 | ||
376 | switch (rr->stat) { | |
377 | case RPC_MISMATCH: | |
378 | if (!libnfs_zdr_u_int(zdrs, &rr->reject_data.mismatch_info.low)) { | |
379 | return FALSE; | |
380 | } | |
381 | if (!libnfs_zdr_u_int(zdrs, &rr->reject_data.mismatch_info.high)) { | |
382 | return FALSE; | |
383 | } | |
384 | return TRUE; | |
385 | case AUTH_ERROR: | |
386 | if (!libnfs_zdr_u_int(zdrs, &rr->reject_data.stat)) { | |
387 | return FALSE; | |
388 | } | |
389 | return TRUE; | |
390 | default: | |
391 | return TRUE; | |
392 | } | |
393 | ||
394 | return FALSE; | |
763cd6e3 RS |
395 | } |
396 | ||
397 | static bool_t libnfs_rpc_reply_body(ZDR *zdrs, struct reply_body *rmb) | |
398 | { | |
aab6538b | 399 | if (!libnfs_zdr_u_int(zdrs, &rmb->stat)) { |
763cd6e3 RS |
400 | return FALSE; |
401 | } | |
402 | ||
aab6538b | 403 | switch (rmb->stat) { |
763cd6e3 | 404 | case MSG_ACCEPTED: |
aab6538b | 405 | if (!libnfs_accepted_reply(zdrs, &rmb->reply.areply)) { |
763cd6e3 RS |
406 | return FALSE; |
407 | } | |
408 | return TRUE; | |
409 | case MSG_DENIED: | |
aab6538b | 410 | if (!libnfs_rejected_reply(zdrs, &rmb->reply.rreply)) { |
763cd6e3 RS |
411 | return FALSE; |
412 | } | |
413 | return TRUE; | |
414 | } | |
415 | ||
416 | return FALSE; | |
417 | } | |
418 | ||
419 | static bool_t libnfs_rpc_msg(ZDR *zdrs, struct rpc_msg *msg) | |
420 | { | |
aab6538b | 421 | if (!libnfs_zdr_u_int(zdrs, &msg->xid)) { |
763cd6e3 RS |
422 | return FALSE; |
423 | } | |
424 | ||
aab6538b | 425 | if (!libnfs_zdr_u_int(zdrs, &msg->direction)) { |
763cd6e3 RS |
426 | return FALSE; |
427 | } | |
428 | ||
aab6538b | 429 | switch (msg->direction) { |
763cd6e3 | 430 | case CALL: |
aab6538b | 431 | return libnfs_rpc_call_body(zdrs, &msg->body.cbody); |
763cd6e3 RS |
432 | break; |
433 | case REPLY: | |
aab6538b | 434 | return libnfs_rpc_reply_body(zdrs, &msg->body.rbody); |
763cd6e3 RS |
435 | break; |
436 | default: | |
437 | return FALSE; | |
438 | } | |
439 | } | |
440 | ||
441 | bool_t libnfs_zdr_callmsg(ZDR *zdrs, struct rpc_msg *msg) | |
442 | { | |
443 | return libnfs_rpc_msg(zdrs, msg); | |
444 | } | |
445 | ||
446 | bool_t libnfs_zdr_replymsg(ZDR *zdrs, struct rpc_msg *msg) | |
447 | { | |
448 | return libnfs_rpc_msg(zdrs, msg); | |
449 | } | |
450 | ||
67ba2239 | 451 | struct AUTH *authnone_create(void) |
763cd6e3 | 452 | { |
67ba2239 | 453 | struct AUTH *auth; |
763cd6e3 | 454 | |
67ba2239 | 455 | auth = malloc(sizeof(struct AUTH)); |
763cd6e3 RS |
456 | |
457 | auth->ah_cred.oa_flavor = AUTH_NONE; | |
458 | auth->ah_cred.oa_length = 0; | |
459 | auth->ah_cred.oa_base = NULL; | |
460 | ||
461 | auth->ah_verf.oa_flavor = AUTH_NONE; | |
462 | auth->ah_verf.oa_length = 0; | |
463 | auth->ah_verf.oa_base = NULL; | |
464 | ||
465 | auth->ah_private = NULL; | |
466 | ||
467 | return auth; | |
468 | } | |
469 | ||
67ba2239 | 470 | struct AUTH *libnfs_authunix_create(char *host, uint32_t uid, uint32_t gid, uint32_t len, uint32_t *groups) |
763cd6e3 | 471 | { |
67ba2239 | 472 | struct AUTH *auth; |
763cd6e3 RS |
473 | int size; |
474 | uint32_t *buf; | |
475 | int idx; | |
476 | ||
477 | size = 4 + 4 + ((strlen(host) + 3) & ~3) + 4 + 4 + 4 + len * 4; | |
67ba2239 | 478 | auth = malloc(sizeof(struct AUTH)); |
763cd6e3 RS |
479 | auth->ah_cred.oa_flavor = AUTH_UNIX; |
480 | auth->ah_cred.oa_length = size; | |
481 | auth->ah_cred.oa_base = malloc(size); | |
482 | ||
45670bd0 | 483 | buf = (uint32_t *)auth->ah_cred.oa_base; |
763cd6e3 RS |
484 | idx = 0; |
485 | buf[idx++] = htonl(time(NULL)); | |
486 | buf[idx++] = htonl(strlen(host)); | |
487 | memcpy(&buf[2], host, strlen(host)); | |
488 | ||
489 | idx += (strlen(host) + 3) >> 2; | |
490 | buf[idx++] = htonl(uid); | |
491 | buf[idx++] = htonl(gid); | |
492 | buf[idx++] = htonl(len); | |
493 | while (len-- > 0) { | |
494 | buf[idx++] = htonl(*groups++); | |
495 | } | |
496 | ||
497 | auth->ah_verf.oa_flavor = AUTH_NONE; | |
498 | auth->ah_verf.oa_length = 0; | |
499 | auth->ah_verf.oa_base = NULL; | |
500 | ||
501 | auth->ah_private = NULL; | |
502 | ||
503 | return auth; | |
504 | } | |
505 | ||
67ba2239 | 506 | struct AUTH *libnfs_authunix_create_default(void) |
763cd6e3 | 507 | { |
67a9f57e | 508 | #ifdef WIN32 |
4e019b25 | 509 | return libnfs_authunix_create("libnfs", 65534, 65534, 0, NULL); |
67a9f57e | 510 | #else |
43e0e7a7 | 511 | return libnfs_authunix_create("libnfs", getuid(), getgid(), 0, NULL); |
67a9f57e | 512 | #endif |
763cd6e3 RS |
513 | } |
514 | ||
67ba2239 | 515 | void libnfs_auth_destroy(struct AUTH *auth) |
763cd6e3 RS |
516 | { |
517 | if (auth->ah_cred.oa_base) { | |
518 | free(auth->ah_cred.oa_base); | |
519 | } | |
520 | if (auth->ah_verf.oa_base) { | |
521 | free(auth->ah_verf.oa_base); | |
522 | } | |
523 | free(auth); | |
524 | } | |
525 |