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Commit | Line | Data |
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0f113f3e | 1 | /* |
b1322259 | 2 | * Copyright 2005-2016 The OpenSSL Project Authors. All Rights Reserved. |
36d16f8e | 3 | * |
b1322259 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
36d16f8e BL |
8 | */ |
9 | ||
36d16f8e BL |
10 | #include <stdio.h> |
11 | #include <errno.h> | |
36d16f8e | 12 | |
d858c876 | 13 | #include "bio_lcl.h" |
74e056ed | 14 | #ifndef OPENSSL_NO_DGRAM |
36d16f8e | 15 | |
14097b6a | 16 | # if !defined(_WIN32) |
0f113f3e MC |
17 | # include <sys/time.h> |
18 | # endif | |
e5fa864f | 19 | |
0f113f3e MC |
20 | # ifndef OPENSSL_NO_SCTP |
21 | # include <netinet/sctp.h> | |
22 | # include <fcntl.h> | |
23 | # define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00 | |
24 | # define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0 | |
25 | # endif | |
7e159e01 | 26 | |
0f113f3e MC |
27 | # if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU) |
28 | # define IP_MTU 14 /* linux is lame */ | |
29 | # endif | |
36d16f8e | 30 | |
0f113f3e MC |
31 | # if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6) |
32 | # define IPPROTO_IPV6 41 /* windows is lame */ | |
33 | # endif | |
5833e4f5 | 34 | |
0f113f3e | 35 | # if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED) |
03c1d9f9 | 36 | /* Standard definition causes type-punning problems. */ |
0f113f3e MC |
37 | # undef IN6_IS_ADDR_V4MAPPED |
38 | # define s6_addr32 __u6_addr.__u6_addr32 | |
39 | # define IN6_IS_ADDR_V4MAPPED(a) \ | |
03c1d9f9 BL |
40 | (((a)->s6_addr32[0] == 0) && \ |
41 | ((a)->s6_addr32[1] == 0) && \ | |
42 | ((a)->s6_addr32[2] == htonl(0x0000ffff))) | |
0f113f3e | 43 | # endif |
03c1d9f9 | 44 | |
36d16f8e BL |
45 | static int dgram_write(BIO *h, const char *buf, int num); |
46 | static int dgram_read(BIO *h, char *buf, int size); | |
47 | static int dgram_puts(BIO *h, const char *str); | |
48 | static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
49 | static int dgram_new(BIO *h); | |
50 | static int dgram_free(BIO *data); | |
51 | static int dgram_clear(BIO *bio); | |
52 | ||
0f113f3e | 53 | # ifndef OPENSSL_NO_SCTP |
7e159e01 DSH |
54 | static int dgram_sctp_write(BIO *h, const char *buf, int num); |
55 | static int dgram_sctp_read(BIO *h, char *buf, int size); | |
56 | static int dgram_sctp_puts(BIO *h, const char *str); | |
57 | static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
58 | static int dgram_sctp_new(BIO *h); | |
59 | static int dgram_sctp_free(BIO *data); | |
0f113f3e MC |
60 | # ifdef SCTP_AUTHENTICATION_EVENT |
61 | static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification | |
62 | *snp); | |
63 | # endif | |
64 | # endif | |
7e159e01 | 65 | |
b3e72fc3 | 66 | static int BIO_dgram_should_retry(int s); |
36d16f8e | 67 | |
5d6a0179 RL |
68 | static void get_current_time(struct timeval *t); |
69 | ||
04f6b0fd | 70 | static const BIO_METHOD methods_dgramp = { |
0f113f3e MC |
71 | BIO_TYPE_DGRAM, |
72 | "datagram socket", | |
3befffa3 MC |
73 | /* TODO: Convert to new style write function */ |
74 | bwrite_conv, | |
0f113f3e | 75 | dgram_write, |
d07aee2c MC |
76 | /* TODO: Convert to new style read function */ |
77 | bread_conv, | |
0f113f3e MC |
78 | dgram_read, |
79 | dgram_puts, | |
80 | NULL, /* dgram_gets, */ | |
81 | dgram_ctrl, | |
82 | dgram_new, | |
83 | dgram_free, | |
84 | NULL, | |
85 | }; | |
86 | ||
87 | # ifndef OPENSSL_NO_SCTP | |
04f6b0fd | 88 | static const BIO_METHOD methods_dgramp_sctp = { |
0f113f3e MC |
89 | BIO_TYPE_DGRAM_SCTP, |
90 | "datagram sctp socket", | |
992155d0 RL |
91 | /* TODO: Convert to new style write function */ |
92 | bwrite_conv, | |
0f113f3e | 93 | dgram_sctp_write, |
992155d0 RL |
94 | /* TODO: Convert to new style write function */ |
95 | bread_conv, | |
0f113f3e MC |
96 | dgram_sctp_read, |
97 | dgram_sctp_puts, | |
98 | NULL, /* dgram_gets, */ | |
99 | dgram_sctp_ctrl, | |
100 | dgram_sctp_new, | |
101 | dgram_sctp_free, | |
102 | NULL, | |
103 | }; | |
104 | # endif | |
7e159e01 | 105 | |
0f113f3e | 106 | typedef struct bio_dgram_data_st { |
d858c876 | 107 | BIO_ADDR peer; |
0f113f3e MC |
108 | unsigned int connected; |
109 | unsigned int _errno; | |
110 | unsigned int mtu; | |
111 | struct timeval next_timeout; | |
112 | struct timeval socket_timeout; | |
01b7851a | 113 | unsigned int peekmode; |
0f113f3e MC |
114 | } bio_dgram_data; |
115 | ||
116 | # ifndef OPENSSL_NO_SCTP | |
117 | typedef struct bio_dgram_sctp_save_message_st { | |
118 | BIO *bio; | |
119 | char *data; | |
120 | int length; | |
121 | } bio_dgram_sctp_save_message; | |
122 | ||
123 | typedef struct bio_dgram_sctp_data_st { | |
d858c876 | 124 | BIO_ADDR peer; |
0f113f3e MC |
125 | unsigned int connected; |
126 | unsigned int _errno; | |
127 | unsigned int mtu; | |
128 | struct bio_dgram_sctp_sndinfo sndinfo; | |
129 | struct bio_dgram_sctp_rcvinfo rcvinfo; | |
130 | struct bio_dgram_sctp_prinfo prinfo; | |
131 | void (*handle_notifications) (BIO *bio, void *context, void *buf); | |
132 | void *notification_context; | |
133 | int in_handshake; | |
134 | int ccs_rcvd; | |
135 | int ccs_sent; | |
136 | int save_shutdown; | |
137 | int peer_auth_tested; | |
138 | bio_dgram_sctp_save_message saved_message; | |
139 | } bio_dgram_sctp_data; | |
140 | # endif | |
7e159e01 | 141 | |
04f6b0fd | 142 | const BIO_METHOD *BIO_s_datagram(void) |
0f113f3e MC |
143 | { |
144 | return (&methods_dgramp); | |
145 | } | |
36d16f8e BL |
146 | |
147 | BIO *BIO_new_dgram(int fd, int close_flag) | |
0f113f3e MC |
148 | { |
149 | BIO *ret; | |
36d16f8e | 150 | |
0f113f3e MC |
151 | ret = BIO_new(BIO_s_datagram()); |
152 | if (ret == NULL) | |
153 | return (NULL); | |
154 | BIO_set_fd(ret, fd, close_flag); | |
155 | return (ret); | |
156 | } | |
36d16f8e BL |
157 | |
158 | static int dgram_new(BIO *bi) | |
0f113f3e | 159 | { |
b51bce94 | 160 | bio_dgram_data *data = OPENSSL_zalloc(sizeof(*data)); |
0f113f3e | 161 | |
0f113f3e MC |
162 | if (data == NULL) |
163 | return 0; | |
36d16f8e | 164 | bi->ptr = data; |
0f113f3e MC |
165 | return (1); |
166 | } | |
36d16f8e BL |
167 | |
168 | static int dgram_free(BIO *a) | |
0f113f3e MC |
169 | { |
170 | bio_dgram_data *data; | |
36d16f8e | 171 | |
0f113f3e MC |
172 | if (a == NULL) |
173 | return (0); | |
174 | if (!dgram_clear(a)) | |
175 | return 0; | |
36d16f8e | 176 | |
0f113f3e | 177 | data = (bio_dgram_data *)a->ptr; |
b548a1f1 | 178 | OPENSSL_free(data); |
36d16f8e | 179 | |
0f113f3e MC |
180 | return (1); |
181 | } | |
36d16f8e BL |
182 | |
183 | static int dgram_clear(BIO *a) | |
0f113f3e MC |
184 | { |
185 | if (a == NULL) | |
186 | return (0); | |
187 | if (a->shutdown) { | |
188 | if (a->init) { | |
8731a4fc | 189 | BIO_closesocket(a->num); |
0f113f3e MC |
190 | } |
191 | a->init = 0; | |
192 | a->flags = 0; | |
193 | } | |
194 | return (1); | |
195 | } | |
eb38b26d DSH |
196 | |
197 | static void dgram_adjust_rcv_timeout(BIO *b) | |
0f113f3e MC |
198 | { |
199 | # if defined(SO_RCVTIMEO) | |
200 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
201 | union { | |
202 | size_t s; | |
203 | int i; | |
204 | } sz = { | |
205 | 0 | |
206 | }; | |
207 | ||
208 | /* Is a timer active? */ | |
209 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) { | |
210 | struct timeval timenow, timeleft; | |
211 | ||
212 | /* Read current socket timeout */ | |
213 | # ifdef OPENSSL_SYS_WINDOWS | |
214 | int timeout; | |
215 | ||
216 | sz.i = sizeof(timeout); | |
217 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
218 | (void *)&timeout, &sz.i) < 0) { | |
219 | perror("getsockopt"); | |
220 | } else { | |
221 | data->socket_timeout.tv_sec = timeout / 1000; | |
222 | data->socket_timeout.tv_usec = (timeout % 1000) * 1000; | |
223 | } | |
224 | # else | |
225 | sz.i = sizeof(data->socket_timeout); | |
226 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
227 | &(data->socket_timeout), (void *)&sz) < 0) { | |
228 | perror("getsockopt"); | |
229 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) | |
230 | OPENSSL_assert(sz.s <= sizeof(data->socket_timeout)); | |
231 | # endif | |
eb38b26d | 232 | |
0f113f3e MC |
233 | /* Get current time */ |
234 | get_current_time(&timenow); | |
235 | ||
236 | /* Calculate time left until timer expires */ | |
237 | memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval)); | |
fc52ac90 MC |
238 | if (timeleft.tv_usec < timenow.tv_usec) { |
239 | timeleft.tv_usec = 1000000 - timenow.tv_usec + timeleft.tv_usec; | |
0f113f3e | 240 | timeleft.tv_sec--; |
fc52ac90 MC |
241 | } else { |
242 | timeleft.tv_usec -= timenow.tv_usec; | |
0f113f3e | 243 | } |
fc52ac90 | 244 | if (timeleft.tv_sec < timenow.tv_sec) { |
0f113f3e MC |
245 | timeleft.tv_sec = 0; |
246 | timeleft.tv_usec = 1; | |
fc52ac90 MC |
247 | } else { |
248 | timeleft.tv_sec -= timenow.tv_sec; | |
0f113f3e MC |
249 | } |
250 | ||
251 | /* | |
0d4fb843 | 252 | * Adjust socket timeout if next handshake message timer will expire |
0f113f3e MC |
253 | * earlier. |
254 | */ | |
255 | if ((data->socket_timeout.tv_sec == 0 | |
256 | && data->socket_timeout.tv_usec == 0) | |
257 | || (data->socket_timeout.tv_sec > timeleft.tv_sec) | |
258 | || (data->socket_timeout.tv_sec == timeleft.tv_sec | |
259 | && data->socket_timeout.tv_usec >= timeleft.tv_usec)) { | |
260 | # ifdef OPENSSL_SYS_WINDOWS | |
261 | timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000; | |
262 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
263 | (void *)&timeout, sizeof(timeout)) < 0) { | |
264 | perror("setsockopt"); | |
265 | } | |
266 | # else | |
267 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft, | |
268 | sizeof(struct timeval)) < 0) { | |
269 | perror("setsockopt"); | |
270 | } | |
271 | # endif | |
272 | } | |
273 | } | |
274 | # endif | |
275 | } | |
eb38b26d DSH |
276 | |
277 | static void dgram_reset_rcv_timeout(BIO *b) | |
0f113f3e MC |
278 | { |
279 | # if defined(SO_RCVTIMEO) | |
280 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
281 | ||
282 | /* Is a timer active? */ | |
283 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) { | |
284 | # ifdef OPENSSL_SYS_WINDOWS | |
285 | int timeout = data->socket_timeout.tv_sec * 1000 + | |
286 | data->socket_timeout.tv_usec / 1000; | |
287 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
288 | (void *)&timeout, sizeof(timeout)) < 0) { | |
289 | perror("setsockopt"); | |
290 | } | |
291 | # else | |
292 | if (setsockopt | |
293 | (b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout), | |
294 | sizeof(struct timeval)) < 0) { | |
295 | perror("setsockopt"); | |
296 | } | |
297 | # endif | |
298 | } | |
299 | # endif | |
300 | } | |
eb38b26d | 301 | |
36d16f8e | 302 | static int dgram_read(BIO *b, char *out, int outl) |
0f113f3e MC |
303 | { |
304 | int ret = 0; | |
305 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
01b7851a | 306 | int flags = 0; |
0f113f3e | 307 | |
d858c876 RL |
308 | BIO_ADDR peer; |
309 | socklen_t len = sizeof(peer); | |
0f113f3e MC |
310 | |
311 | if (out != NULL) { | |
312 | clear_socket_error(); | |
d858c876 | 313 | memset(&peer, 0, sizeof(peer)); |
0f113f3e | 314 | dgram_adjust_rcv_timeout(b); |
01b7851a MC |
315 | if (data->peekmode) |
316 | flags = MSG_PEEK; | |
d858c876 RL |
317 | ret = recvfrom(b->num, out, outl, flags, |
318 | BIO_ADDR_sockaddr_noconst(&peer), &len); | |
0f113f3e MC |
319 | |
320 | if (!data->connected && ret >= 0) | |
d858c876 | 321 | BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &peer); |
0f113f3e MC |
322 | |
323 | BIO_clear_retry_flags(b); | |
324 | if (ret < 0) { | |
325 | if (BIO_dgram_should_retry(ret)) { | |
326 | BIO_set_retry_read(b); | |
327 | data->_errno = get_last_socket_error(); | |
328 | } | |
329 | } | |
330 | ||
331 | dgram_reset_rcv_timeout(b); | |
332 | } | |
333 | return (ret); | |
334 | } | |
36d16f8e BL |
335 | |
336 | static int dgram_write(BIO *b, const char *in, int inl) | |
0f113f3e MC |
337 | { |
338 | int ret; | |
339 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
340 | clear_socket_error(); | |
341 | ||
342 | if (data->connected) | |
343 | ret = writesocket(b->num, in, inl); | |
344 | else { | |
d858c876 | 345 | int peerlen = BIO_ADDR_sockaddr_size(&data->peer); |
0f113f3e | 346 | |
0f113f3e | 347 | # if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK) |
d858c876 RL |
348 | ret = sendto(b->num, (char *)in, inl, 0, |
349 | BIO_ADDR_sockaddr(&data->peer), peerlen); | |
0f113f3e | 350 | # else |
d858c876 RL |
351 | ret = sendto(b->num, in, inl, 0, |
352 | BIO_ADDR_sockaddr(&data->peer), peerlen); | |
0f113f3e MC |
353 | # endif |
354 | } | |
355 | ||
356 | BIO_clear_retry_flags(b); | |
357 | if (ret <= 0) { | |
358 | if (BIO_dgram_should_retry(ret)) { | |
359 | BIO_set_retry_write(b); | |
360 | data->_errno = get_last_socket_error(); | |
0f113f3e MC |
361 | } |
362 | } | |
363 | return (ret); | |
364 | } | |
36d16f8e | 365 | |
0d3ae34d | 366 | static long dgram_get_mtu_overhead(bio_dgram_data *data) |
0f113f3e MC |
367 | { |
368 | long ret; | |
369 | ||
d858c876 | 370 | switch (BIO_ADDR_family(&data->peer)) { |
0f113f3e MC |
371 | case AF_INET: |
372 | /* | |
373 | * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP | |
374 | */ | |
375 | ret = 28; | |
376 | break; | |
d858c876 | 377 | # ifdef AF_INET6 |
0f113f3e | 378 | case AF_INET6: |
d858c876 | 379 | { |
0f113f3e | 380 | # ifdef IN6_IS_ADDR_V4MAPPED |
d858c876 RL |
381 | struct in6_addr tmp_addr; |
382 | if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL) | |
383 | && IN6_IS_ADDR_V4MAPPED(&tmp_addr)) | |
384 | /* | |
385 | * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP | |
386 | */ | |
387 | ret = 28; | |
388 | else | |
0f113f3e MC |
389 | # endif |
390 | /* | |
391 | * Assume this is UDP - 40 bytes for IP, 8 bytes for UDP | |
392 | */ | |
393 | ret = 48; | |
d858c876 | 394 | } |
0f113f3e MC |
395 | break; |
396 | # endif | |
397 | default: | |
398 | /* We don't know. Go with the historical default */ | |
399 | ret = 28; | |
400 | break; | |
401 | } | |
402 | return ret; | |
403 | } | |
0d3ae34d | 404 | |
36d16f8e | 405 | static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr) |
0f113f3e MC |
406 | { |
407 | long ret = 1; | |
408 | int *ip; | |
0f113f3e MC |
409 | bio_dgram_data *data = NULL; |
410 | int sockopt_val = 0; | |
b5292f7b | 411 | int d_errno; |
0f113f3e MC |
412 | # if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU)) |
413 | socklen_t sockopt_len; /* assume that system supporting IP_MTU is | |
414 | * modern enough to define socklen_t */ | |
415 | socklen_t addr_len; | |
d858c876 | 416 | BIO_ADDR addr; |
0f113f3e | 417 | # endif |
36d16f8e | 418 | |
0f113f3e MC |
419 | data = (bio_dgram_data *)b->ptr; |
420 | ||
421 | switch (cmd) { | |
422 | case BIO_CTRL_RESET: | |
423 | num = 0; | |
0f113f3e MC |
424 | ret = 0; |
425 | break; | |
0f113f3e MC |
426 | case BIO_CTRL_INFO: |
427 | ret = 0; | |
428 | break; | |
429 | case BIO_C_SET_FD: | |
430 | dgram_clear(b); | |
431 | b->num = *((int *)ptr); | |
432 | b->shutdown = (int)num; | |
433 | b->init = 1; | |
434 | break; | |
435 | case BIO_C_GET_FD: | |
436 | if (b->init) { | |
437 | ip = (int *)ptr; | |
438 | if (ip != NULL) | |
439 | *ip = b->num; | |
440 | ret = b->num; | |
441 | } else | |
442 | ret = -1; | |
443 | break; | |
444 | case BIO_CTRL_GET_CLOSE: | |
445 | ret = b->shutdown; | |
446 | break; | |
447 | case BIO_CTRL_SET_CLOSE: | |
448 | b->shutdown = (int)num; | |
449 | break; | |
450 | case BIO_CTRL_PENDING: | |
451 | case BIO_CTRL_WPENDING: | |
452 | ret = 0; | |
453 | break; | |
454 | case BIO_CTRL_DUP: | |
455 | case BIO_CTRL_FLUSH: | |
456 | ret = 1; | |
457 | break; | |
458 | case BIO_CTRL_DGRAM_CONNECT: | |
d858c876 | 459 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr)); |
0f113f3e MC |
460 | break; |
461 | /* (Linux)kernel sets DF bit on outgoing IP packets */ | |
462 | case BIO_CTRL_DGRAM_MTU_DISCOVER: | |
463 | # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) | |
464 | addr_len = (socklen_t) sizeof(addr); | |
16f8d4eb | 465 | memset(&addr, 0, sizeof(addr)); |
0f113f3e MC |
466 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) { |
467 | ret = 0; | |
468 | break; | |
469 | } | |
470 | switch (addr.sa.sa_family) { | |
471 | case AF_INET: | |
472 | sockopt_val = IP_PMTUDISC_DO; | |
473 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER, | |
474 | &sockopt_val, sizeof(sockopt_val))) < 0) | |
475 | perror("setsockopt"); | |
476 | break; | |
477 | # if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) | |
478 | case AF_INET6: | |
479 | sockopt_val = IPV6_PMTUDISC_DO; | |
480 | if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER, | |
481 | &sockopt_val, sizeof(sockopt_val))) < 0) | |
482 | perror("setsockopt"); | |
483 | break; | |
484 | # endif | |
485 | default: | |
486 | ret = -1; | |
487 | break; | |
488 | } | |
489 | # else | |
490 | ret = -1; | |
491 | # endif | |
492 | break; | |
493 | case BIO_CTRL_DGRAM_QUERY_MTU: | |
494 | # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU) | |
495 | addr_len = (socklen_t) sizeof(addr); | |
16f8d4eb | 496 | memset(&addr, 0, sizeof(addr)); |
0f113f3e MC |
497 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) { |
498 | ret = 0; | |
499 | break; | |
500 | } | |
501 | sockopt_len = sizeof(sockopt_val); | |
502 | switch (addr.sa.sa_family) { | |
503 | case AF_INET: | |
504 | if ((ret = | |
505 | getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val, | |
506 | &sockopt_len)) < 0 || sockopt_val < 0) { | |
507 | ret = 0; | |
508 | } else { | |
509 | /* | |
510 | * we assume that the transport protocol is UDP and no IP | |
511 | * options are used. | |
512 | */ | |
513 | data->mtu = sockopt_val - 8 - 20; | |
514 | ret = data->mtu; | |
515 | } | |
516 | break; | |
517 | # if OPENSSL_USE_IPV6 && defined(IPV6_MTU) | |
518 | case AF_INET6: | |
519 | if ((ret = | |
520 | getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, | |
521 | (void *)&sockopt_val, &sockopt_len)) < 0 | |
522 | || sockopt_val < 0) { | |
523 | ret = 0; | |
524 | } else { | |
525 | /* | |
526 | * we assume that the transport protocol is UDP and no IPV6 | |
527 | * options are used. | |
528 | */ | |
529 | data->mtu = sockopt_val - 8 - 40; | |
530 | ret = data->mtu; | |
531 | } | |
532 | break; | |
533 | # endif | |
534 | default: | |
535 | ret = 0; | |
536 | break; | |
537 | } | |
538 | # else | |
539 | ret = 0; | |
540 | # endif | |
541 | break; | |
542 | case BIO_CTRL_DGRAM_GET_FALLBACK_MTU: | |
543 | ret = -dgram_get_mtu_overhead(data); | |
d858c876 | 544 | switch (BIO_ADDR_family(&data->peer)) { |
0f113f3e MC |
545 | case AF_INET: |
546 | ret += 576; | |
547 | break; | |
548 | # if OPENSSL_USE_IPV6 | |
549 | case AF_INET6: | |
d858c876 | 550 | { |
0f113f3e | 551 | # ifdef IN6_IS_ADDR_V4MAPPED |
d858c876 RL |
552 | struct in6_addr tmp_addr; |
553 | if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL) | |
554 | && IN6_IS_ADDR_V4MAPPED(&tmp_addr)) | |
555 | ret += 576; | |
556 | else | |
0f113f3e | 557 | # endif |
d858c876 RL |
558 | ret += 1280; |
559 | } | |
0f113f3e MC |
560 | break; |
561 | # endif | |
562 | default: | |
563 | ret += 576; | |
564 | break; | |
565 | } | |
566 | break; | |
567 | case BIO_CTRL_DGRAM_GET_MTU: | |
568 | return data->mtu; | |
0f113f3e MC |
569 | case BIO_CTRL_DGRAM_SET_MTU: |
570 | data->mtu = num; | |
571 | ret = num; | |
572 | break; | |
573 | case BIO_CTRL_DGRAM_SET_CONNECTED: | |
d858c876 | 574 | if (ptr != NULL) { |
0f113f3e | 575 | data->connected = 1; |
d858c876 | 576 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr)); |
0f113f3e MC |
577 | } else { |
578 | data->connected = 0; | |
16f8d4eb | 579 | memset(&data->peer, 0, sizeof(data->peer)); |
0f113f3e MC |
580 | } |
581 | break; | |
582 | case BIO_CTRL_DGRAM_GET_PEER: | |
d858c876 RL |
583 | ret = BIO_ADDR_sockaddr_size(&data->peer); |
584 | /* FIXME: if num < ret, we will only return part of an address. | |
585 | That should bee an error, no? */ | |
0f113f3e MC |
586 | if (num == 0 || num > ret) |
587 | num = ret; | |
588 | memcpy(ptr, &data->peer, (ret = num)); | |
589 | break; | |
590 | case BIO_CTRL_DGRAM_SET_PEER: | |
d858c876 | 591 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr)); |
0f113f3e MC |
592 | break; |
593 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT: | |
594 | memcpy(&(data->next_timeout), ptr, sizeof(struct timeval)); | |
595 | break; | |
596 | # if defined(SO_RCVTIMEO) | |
597 | case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT: | |
598 | # ifdef OPENSSL_SYS_WINDOWS | |
599 | { | |
600 | struct timeval *tv = (struct timeval *)ptr; | |
601 | int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000; | |
602 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
603 | (void *)&timeout, sizeof(timeout)) < 0) { | |
604 | perror("setsockopt"); | |
605 | ret = -1; | |
606 | } | |
607 | } | |
608 | # else | |
609 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr, | |
610 | sizeof(struct timeval)) < 0) { | |
611 | perror("setsockopt"); | |
612 | ret = -1; | |
613 | } | |
614 | # endif | |
615 | break; | |
616 | case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT: | |
617 | { | |
618 | union { | |
619 | size_t s; | |
620 | int i; | |
621 | } sz = { | |
622 | 0 | |
623 | }; | |
624 | # ifdef OPENSSL_SYS_WINDOWS | |
625 | int timeout; | |
626 | struct timeval *tv = (struct timeval *)ptr; | |
627 | ||
628 | sz.i = sizeof(timeout); | |
629 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
630 | (void *)&timeout, &sz.i) < 0) { | |
631 | perror("getsockopt"); | |
632 | ret = -1; | |
633 | } else { | |
634 | tv->tv_sec = timeout / 1000; | |
635 | tv->tv_usec = (timeout % 1000) * 1000; | |
636 | ret = sizeof(*tv); | |
637 | } | |
638 | # else | |
639 | sz.i = sizeof(struct timeval); | |
640 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
641 | ptr, (void *)&sz) < 0) { | |
642 | perror("getsockopt"); | |
643 | ret = -1; | |
644 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) { | |
645 | OPENSSL_assert(sz.s <= sizeof(struct timeval)); | |
646 | ret = (int)sz.s; | |
647 | } else | |
648 | ret = sz.i; | |
649 | # endif | |
650 | } | |
651 | break; | |
652 | # endif | |
653 | # if defined(SO_SNDTIMEO) | |
654 | case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT: | |
655 | # ifdef OPENSSL_SYS_WINDOWS | |
656 | { | |
657 | struct timeval *tv = (struct timeval *)ptr; | |
658 | int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000; | |
659 | if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
660 | (void *)&timeout, sizeof(timeout)) < 0) { | |
661 | perror("setsockopt"); | |
662 | ret = -1; | |
663 | } | |
664 | } | |
665 | # else | |
666 | if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr, | |
667 | sizeof(struct timeval)) < 0) { | |
668 | perror("setsockopt"); | |
669 | ret = -1; | |
670 | } | |
671 | # endif | |
672 | break; | |
673 | case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT: | |
674 | { | |
675 | union { | |
676 | size_t s; | |
677 | int i; | |
678 | } sz = { | |
679 | 0 | |
680 | }; | |
681 | # ifdef OPENSSL_SYS_WINDOWS | |
682 | int timeout; | |
683 | struct timeval *tv = (struct timeval *)ptr; | |
684 | ||
685 | sz.i = sizeof(timeout); | |
686 | if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
687 | (void *)&timeout, &sz.i) < 0) { | |
688 | perror("getsockopt"); | |
689 | ret = -1; | |
690 | } else { | |
691 | tv->tv_sec = timeout / 1000; | |
692 | tv->tv_usec = (timeout % 1000) * 1000; | |
693 | ret = sizeof(*tv); | |
694 | } | |
695 | # else | |
696 | sz.i = sizeof(struct timeval); | |
697 | if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
698 | ptr, (void *)&sz) < 0) { | |
699 | perror("getsockopt"); | |
700 | ret = -1; | |
701 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) { | |
702 | OPENSSL_assert(sz.s <= sizeof(struct timeval)); | |
703 | ret = (int)sz.s; | |
704 | } else | |
705 | ret = sz.i; | |
706 | # endif | |
707 | } | |
708 | break; | |
709 | # endif | |
710 | case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP: | |
711 | /* fall-through */ | |
712 | case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP: | |
713 | # ifdef OPENSSL_SYS_WINDOWS | |
b5292f7b | 714 | d_errno = (data->_errno == WSAETIMEDOUT); |
0f113f3e | 715 | # else |
b5292f7b | 716 | d_errno = (data->_errno == EAGAIN); |
0f113f3e | 717 | # endif |
b5292f7b | 718 | if (d_errno) { |
0f113f3e MC |
719 | ret = 1; |
720 | data->_errno = 0; | |
721 | } else | |
722 | ret = 0; | |
723 | break; | |
724 | # ifdef EMSGSIZE | |
725 | case BIO_CTRL_DGRAM_MTU_EXCEEDED: | |
726 | if (data->_errno == EMSGSIZE) { | |
727 | ret = 1; | |
728 | data->_errno = 0; | |
729 | } else | |
730 | ret = 0; | |
731 | break; | |
732 | # endif | |
733 | case BIO_CTRL_DGRAM_SET_DONT_FRAG: | |
734 | sockopt_val = num ? 1 : 0; | |
735 | ||
736 | switch (data->peer.sa.sa_family) { | |
737 | case AF_INET: | |
738 | # if defined(IP_DONTFRAG) | |
739 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAG, | |
740 | &sockopt_val, sizeof(sockopt_val))) < 0) { | |
741 | perror("setsockopt"); | |
742 | ret = -1; | |
743 | } | |
133dce44 | 744 | # elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined (IP_PMTUDISC_PROBE) |
0f113f3e MC |
745 | if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT), |
746 | (ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER, | |
747 | &sockopt_val, sizeof(sockopt_val))) < 0) { | |
748 | perror("setsockopt"); | |
749 | ret = -1; | |
750 | } | |
751 | # elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT) | |
752 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAGMENT, | |
753 | (const char *)&sockopt_val, | |
754 | sizeof(sockopt_val))) < 0) { | |
755 | perror("setsockopt"); | |
756 | ret = -1; | |
757 | } | |
758 | # else | |
759 | ret = -1; | |
760 | # endif | |
761 | break; | |
762 | # if OPENSSL_USE_IPV6 | |
763 | case AF_INET6: | |
764 | # if defined(IPV6_DONTFRAG) | |
765 | if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG, | |
766 | (const void *)&sockopt_val, | |
767 | sizeof(sockopt_val))) < 0) { | |
768 | perror("setsockopt"); | |
769 | ret = -1; | |
770 | } | |
771 | # elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER) | |
772 | if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT), | |
773 | (ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER, | |
774 | &sockopt_val, sizeof(sockopt_val))) < 0) { | |
775 | perror("setsockopt"); | |
776 | ret = -1; | |
777 | } | |
778 | # else | |
779 | ret = -1; | |
780 | # endif | |
781 | break; | |
782 | # endif | |
783 | default: | |
784 | ret = -1; | |
785 | break; | |
786 | } | |
787 | break; | |
788 | case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD: | |
789 | ret = dgram_get_mtu_overhead(data); | |
790 | break; | |
01b7851a MC |
791 | case BIO_CTRL_DGRAM_SET_PEEK_MODE: |
792 | data->peekmode = (unsigned int)num; | |
793 | break; | |
0f113f3e MC |
794 | default: |
795 | ret = 0; | |
796 | break; | |
797 | } | |
798 | return (ret); | |
799 | } | |
36d16f8e BL |
800 | |
801 | static int dgram_puts(BIO *bp, const char *str) | |
0f113f3e MC |
802 | { |
803 | int n, ret; | |
36d16f8e | 804 | |
0f113f3e MC |
805 | n = strlen(str); |
806 | ret = dgram_write(bp, str, n); | |
807 | return (ret); | |
808 | } | |
36d16f8e | 809 | |
0f113f3e | 810 | # ifndef OPENSSL_NO_SCTP |
04f6b0fd | 811 | const BIO_METHOD *BIO_s_datagram_sctp(void) |
0f113f3e MC |
812 | { |
813 | return (&methods_dgramp_sctp); | |
814 | } | |
7e159e01 DSH |
815 | |
816 | BIO *BIO_new_dgram_sctp(int fd, int close_flag) | |
0f113f3e MC |
817 | { |
818 | BIO *bio; | |
819 | int ret, optval = 20000; | |
820 | int auth_data = 0, auth_forward = 0; | |
821 | unsigned char *p; | |
822 | struct sctp_authchunk auth; | |
823 | struct sctp_authchunks *authchunks; | |
824 | socklen_t sockopt_len; | |
825 | # ifdef SCTP_AUTHENTICATION_EVENT | |
826 | # ifdef SCTP_EVENT | |
827 | struct sctp_event event; | |
828 | # else | |
829 | struct sctp_event_subscribe event; | |
830 | # endif | |
831 | # endif | |
7e159e01 | 832 | |
0f113f3e MC |
833 | bio = BIO_new(BIO_s_datagram_sctp()); |
834 | if (bio == NULL) | |
835 | return (NULL); | |
836 | BIO_set_fd(bio, fd, close_flag); | |
837 | ||
838 | /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */ | |
839 | auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE; | |
840 | ret = | |
841 | setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, | |
842 | sizeof(struct sctp_authchunk)); | |
843 | if (ret < 0) { | |
844 | BIO_vfree(bio); | |
dcf88c5b MC |
845 | BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB); |
846 | ERR_add_error_data(1, "Ensure SCTP AUTH chunks are enabled in kernel"); | |
0f113f3e MC |
847 | return (NULL); |
848 | } | |
849 | auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE; | |
850 | ret = | |
851 | setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, | |
852 | sizeof(struct sctp_authchunk)); | |
853 | if (ret < 0) { | |
854 | BIO_vfree(bio); | |
dcf88c5b MC |
855 | BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB); |
856 | ERR_add_error_data(1, "Ensure SCTP AUTH chunks are enabled in kernel"); | |
0f113f3e MC |
857 | return (NULL); |
858 | } | |
859 | ||
860 | /* | |
861 | * Test if activation was successful. When using accept(), SCTP-AUTH has | |
862 | * to be activated for the listening socket already, otherwise the | |
dcf88c5b MC |
863 | * connected socket won't use it. Similarly with connect(): the socket |
864 | * prior to connection must be activated for SCTP-AUTH | |
0f113f3e MC |
865 | */ |
866 | sockopt_len = (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t)); | |
b51bce94 | 867 | authchunks = OPENSSL_zalloc(sockopt_len); |
90945fa3 | 868 | if (authchunks == NULL) { |
918bb865 MC |
869 | BIO_vfree(bio); |
870 | return (NULL); | |
871 | } | |
b51bce94 | 872 | ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks, |
0f113f3e | 873 | &sockopt_len); |
0f113f3e MC |
874 | if (ret < 0) { |
875 | OPENSSL_free(authchunks); | |
876 | BIO_vfree(bio); | |
877 | return (NULL); | |
878 | } | |
879 | ||
880 | for (p = (unsigned char *)authchunks->gauth_chunks; | |
881 | p < (unsigned char *)authchunks + sockopt_len; | |
882 | p += sizeof(uint8_t)) { | |
883 | if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) | |
884 | auth_data = 1; | |
885 | if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) | |
886 | auth_forward = 1; | |
887 | } | |
888 | ||
889 | OPENSSL_free(authchunks); | |
890 | ||
dcf88c5b MC |
891 | if (!auth_data || !auth_forward) { |
892 | BIO_vfree(bio); | |
893 | BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB); | |
894 | ERR_add_error_data(1, | |
895 | "Ensure SCTP AUTH chunks are enabled on the " | |
896 | "underlying socket"); | |
897 | return NULL; | |
898 | } | |
0f113f3e MC |
899 | |
900 | # ifdef SCTP_AUTHENTICATION_EVENT | |
901 | # ifdef SCTP_EVENT | |
16f8d4eb | 902 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
903 | event.se_assoc_id = 0; |
904 | event.se_type = SCTP_AUTHENTICATION_EVENT; | |
905 | event.se_on = 1; | |
906 | ret = | |
907 | setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event, | |
908 | sizeof(struct sctp_event)); | |
909 | if (ret < 0) { | |
910 | BIO_vfree(bio); | |
911 | return (NULL); | |
912 | } | |
913 | # else | |
914 | sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe); | |
915 | ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len); | |
916 | if (ret < 0) { | |
917 | BIO_vfree(bio); | |
918 | return (NULL); | |
919 | } | |
920 | ||
921 | event.sctp_authentication_event = 1; | |
922 | ||
923 | ret = | |
924 | setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
925 | sizeof(struct sctp_event_subscribe)); | |
926 | if (ret < 0) { | |
927 | BIO_vfree(bio); | |
928 | return (NULL); | |
929 | } | |
930 | # endif | |
931 | # endif | |
7e159e01 | 932 | |
0f113f3e MC |
933 | /* |
934 | * Disable partial delivery by setting the min size larger than the max | |
935 | * record size of 2^14 + 2048 + 13 | |
936 | */ | |
937 | ret = | |
938 | setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval, | |
939 | sizeof(optval)); | |
940 | if (ret < 0) { | |
941 | BIO_vfree(bio); | |
942 | return (NULL); | |
943 | } | |
944 | ||
945 | return (bio); | |
946 | } | |
7e159e01 DSH |
947 | |
948 | int BIO_dgram_is_sctp(BIO *bio) | |
0f113f3e MC |
949 | { |
950 | return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP); | |
951 | } | |
7e159e01 DSH |
952 | |
953 | static int dgram_sctp_new(BIO *bi) | |
0f113f3e MC |
954 | { |
955 | bio_dgram_sctp_data *data = NULL; | |
956 | ||
957 | bi->init = 0; | |
958 | bi->num = 0; | |
b51bce94 | 959 | data = OPENSSL_zalloc(sizeof(*data)); |
0f113f3e MC |
960 | if (data == NULL) |
961 | return 0; | |
0f113f3e MC |
962 | # ifdef SCTP_PR_SCTP_NONE |
963 | data->prinfo.pr_policy = SCTP_PR_SCTP_NONE; | |
964 | # endif | |
7e159e01 DSH |
965 | bi->ptr = data; |
966 | ||
0f113f3e MC |
967 | bi->flags = 0; |
968 | return (1); | |
969 | } | |
7e159e01 DSH |
970 | |
971 | static int dgram_sctp_free(BIO *a) | |
0f113f3e MC |
972 | { |
973 | bio_dgram_sctp_data *data; | |
7e159e01 | 974 | |
0f113f3e MC |
975 | if (a == NULL) |
976 | return (0); | |
977 | if (!dgram_clear(a)) | |
978 | return 0; | |
7e159e01 | 979 | |
0f113f3e MC |
980 | data = (bio_dgram_sctp_data *) a->ptr; |
981 | if (data != NULL) { | |
b548a1f1 | 982 | OPENSSL_free(data->saved_message.data); |
0f113f3e MC |
983 | OPENSSL_free(data); |
984 | } | |
985 | ||
986 | return (1); | |
987 | } | |
7e159e01 | 988 | |
0f113f3e MC |
989 | # ifdef SCTP_AUTHENTICATION_EVENT |
990 | void dgram_sctp_handle_auth_free_key_event(BIO *b, | |
991 | union sctp_notification *snp) | |
992 | { | |
993 | int ret; | |
994 | struct sctp_authkey_event *authkeyevent = &snp->sn_auth_event; | |
995 | ||
996 | if (authkeyevent->auth_indication == SCTP_AUTH_FREE_KEY) { | |
997 | struct sctp_authkeyid authkeyid; | |
998 | ||
999 | /* delete key */ | |
1000 | authkeyid.scact_keynumber = authkeyevent->auth_keynumber; | |
1001 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY, | |
1002 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1003 | } | |
1004 | } | |
1005 | # endif | |
1006 | ||
1007 | static int dgram_sctp_read(BIO *b, char *out, int outl) | |
1008 | { | |
1009 | int ret = 0, n = 0, i, optval; | |
1010 | socklen_t optlen; | |
1011 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1012 | union sctp_notification *snp; | |
1013 | struct msghdr msg; | |
1014 | struct iovec iov; | |
1015 | struct cmsghdr *cmsg; | |
1016 | char cmsgbuf[512]; | |
1017 | ||
1018 | if (out != NULL) { | |
1019 | clear_socket_error(); | |
1020 | ||
1021 | do { | |
16f8d4eb | 1022 | memset(&data->rcvinfo, 0, sizeof(data->rcvinfo)); |
0f113f3e MC |
1023 | iov.iov_base = out; |
1024 | iov.iov_len = outl; | |
1025 | msg.msg_name = NULL; | |
1026 | msg.msg_namelen = 0; | |
1027 | msg.msg_iov = &iov; | |
1028 | msg.msg_iovlen = 1; | |
1029 | msg.msg_control = cmsgbuf; | |
1030 | msg.msg_controllen = 512; | |
1031 | msg.msg_flags = 0; | |
1032 | n = recvmsg(b->num, &msg, 0); | |
1033 | ||
1034 | if (n <= 0) { | |
1035 | if (n < 0) | |
1036 | ret = n; | |
1037 | break; | |
1038 | } | |
1039 | ||
1040 | if (msg.msg_controllen > 0) { | |
1041 | for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; | |
1042 | cmsg = CMSG_NXTHDR(&msg, cmsg)) { | |
1043 | if (cmsg->cmsg_level != IPPROTO_SCTP) | |
1044 | continue; | |
1045 | # ifdef SCTP_RCVINFO | |
1046 | if (cmsg->cmsg_type == SCTP_RCVINFO) { | |
1047 | struct sctp_rcvinfo *rcvinfo; | |
1048 | ||
1049 | rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg); | |
1050 | data->rcvinfo.rcv_sid = rcvinfo->rcv_sid; | |
1051 | data->rcvinfo.rcv_ssn = rcvinfo->rcv_ssn; | |
1052 | data->rcvinfo.rcv_flags = rcvinfo->rcv_flags; | |
1053 | data->rcvinfo.rcv_ppid = rcvinfo->rcv_ppid; | |
1054 | data->rcvinfo.rcv_tsn = rcvinfo->rcv_tsn; | |
1055 | data->rcvinfo.rcv_cumtsn = rcvinfo->rcv_cumtsn; | |
1056 | data->rcvinfo.rcv_context = rcvinfo->rcv_context; | |
1057 | } | |
1058 | # endif | |
1059 | # ifdef SCTP_SNDRCV | |
1060 | if (cmsg->cmsg_type == SCTP_SNDRCV) { | |
1061 | struct sctp_sndrcvinfo *sndrcvinfo; | |
1062 | ||
1063 | sndrcvinfo = | |
1064 | (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); | |
1065 | data->rcvinfo.rcv_sid = sndrcvinfo->sinfo_stream; | |
1066 | data->rcvinfo.rcv_ssn = sndrcvinfo->sinfo_ssn; | |
1067 | data->rcvinfo.rcv_flags = sndrcvinfo->sinfo_flags; | |
1068 | data->rcvinfo.rcv_ppid = sndrcvinfo->sinfo_ppid; | |
1069 | data->rcvinfo.rcv_tsn = sndrcvinfo->sinfo_tsn; | |
1070 | data->rcvinfo.rcv_cumtsn = sndrcvinfo->sinfo_cumtsn; | |
1071 | data->rcvinfo.rcv_context = sndrcvinfo->sinfo_context; | |
1072 | } | |
1073 | # endif | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | if (msg.msg_flags & MSG_NOTIFICATION) { | |
1078 | snp = (union sctp_notification *)out; | |
1079 | if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EVENT) { | |
1080 | # ifdef SCTP_EVENT | |
1081 | struct sctp_event event; | |
1082 | # else | |
1083 | struct sctp_event_subscribe event; | |
1084 | socklen_t eventsize; | |
1085 | # endif | |
1086 | /* | |
1087 | * If a message has been delayed until the socket is dry, | |
1088 | * it can be sent now. | |
1089 | */ | |
1090 | if (data->saved_message.length > 0) { | |
7f098cb4 | 1091 | i = dgram_sctp_write(data->saved_message.bio, |
0f113f3e MC |
1092 | data->saved_message.data, |
1093 | data->saved_message.length); | |
7f098cb4 KR |
1094 | if (i < 0) { |
1095 | ret = i; | |
1096 | break; | |
1097 | } | |
0f113f3e MC |
1098 | OPENSSL_free(data->saved_message.data); |
1099 | data->saved_message.data = NULL; | |
1100 | data->saved_message.length = 0; | |
1101 | } | |
1102 | ||
1103 | /* disable sender dry event */ | |
1104 | # ifdef SCTP_EVENT | |
16f8d4eb | 1105 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
1106 | event.se_assoc_id = 0; |
1107 | event.se_type = SCTP_SENDER_DRY_EVENT; | |
1108 | event.se_on = 0; | |
1109 | i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, | |
1110 | sizeof(struct sctp_event)); | |
1111 | if (i < 0) { | |
1112 | ret = i; | |
1113 | break; | |
1114 | } | |
1115 | # else | |
1116 | eventsize = sizeof(struct sctp_event_subscribe); | |
1117 | i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1118 | &eventsize); | |
1119 | if (i < 0) { | |
1120 | ret = i; | |
1121 | break; | |
1122 | } | |
1123 | ||
1124 | event.sctp_sender_dry_event = 0; | |
1125 | ||
1126 | i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1127 | sizeof(struct sctp_event_subscribe)); | |
1128 | if (i < 0) { | |
1129 | ret = i; | |
1130 | break; | |
1131 | } | |
1132 | # endif | |
1133 | } | |
1134 | # ifdef SCTP_AUTHENTICATION_EVENT | |
1135 | if (snp->sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
1136 | dgram_sctp_handle_auth_free_key_event(b, snp); | |
1137 | # endif | |
1138 | ||
1139 | if (data->handle_notifications != NULL) | |
1140 | data->handle_notifications(b, data->notification_context, | |
1141 | (void *)out); | |
1142 | ||
1143 | memset(out, 0, outl); | |
1144 | } else | |
1145 | ret += n; | |
1146 | } | |
1147 | while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR) | |
1148 | && (ret < outl)); | |
1149 | ||
1150 | if (ret > 0 && !(msg.msg_flags & MSG_EOR)) { | |
1151 | /* Partial message read, this should never happen! */ | |
1152 | ||
1153 | /* | |
1154 | * The buffer was too small, this means the peer sent a message | |
1155 | * that was larger than allowed. | |
1156 | */ | |
1157 | if (ret == outl) | |
1158 | return -1; | |
1159 | ||
1160 | /* | |
1161 | * Test if socket buffer can handle max record size (2^14 + 2048 | |
1162 | * + 13) | |
1163 | */ | |
1164 | optlen = (socklen_t) sizeof(int); | |
1165 | ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen); | |
1166 | if (ret >= 0) | |
1167 | OPENSSL_assert(optval >= 18445); | |
1168 | ||
1169 | /* | |
1170 | * Test if SCTP doesn't partially deliver below max record size | |
1171 | * (2^14 + 2048 + 13) | |
1172 | */ | |
1173 | optlen = (socklen_t) sizeof(int); | |
1174 | ret = | |
1175 | getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, | |
1176 | &optval, &optlen); | |
1177 | if (ret >= 0) | |
1178 | OPENSSL_assert(optval >= 18445); | |
1179 | ||
1180 | /* | |
1181 | * Partially delivered notification??? Probably a bug.... | |
1182 | */ | |
1183 | OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION)); | |
1184 | ||
1185 | /* | |
1186 | * Everything seems ok till now, so it's most likely a message | |
1187 | * dropped by PR-SCTP. | |
1188 | */ | |
1189 | memset(out, 0, outl); | |
1190 | BIO_set_retry_read(b); | |
1191 | return -1; | |
1192 | } | |
1193 | ||
1194 | BIO_clear_retry_flags(b); | |
1195 | if (ret < 0) { | |
1196 | if (BIO_dgram_should_retry(ret)) { | |
1197 | BIO_set_retry_read(b); | |
1198 | data->_errno = get_last_socket_error(); | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | /* Test if peer uses SCTP-AUTH before continuing */ | |
1203 | if (!data->peer_auth_tested) { | |
1204 | int ii, auth_data = 0, auth_forward = 0; | |
1205 | unsigned char *p; | |
1206 | struct sctp_authchunks *authchunks; | |
1207 | ||
1208 | optlen = | |
1209 | (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t)); | |
1210 | authchunks = OPENSSL_malloc(optlen); | |
90945fa3 | 1211 | if (authchunks == NULL) { |
7c82e339 | 1212 | BIOerr(BIO_F_DGRAM_SCTP_READ, ERR_R_MALLOC_FAILURE); |
918bb865 MC |
1213 | return -1; |
1214 | } | |
0f113f3e MC |
1215 | memset(authchunks, 0, optlen); |
1216 | ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS, | |
1217 | authchunks, &optlen); | |
1218 | ||
1219 | if (ii >= 0) | |
1220 | for (p = (unsigned char *)authchunks->gauth_chunks; | |
1221 | p < (unsigned char *)authchunks + optlen; | |
1222 | p += sizeof(uint8_t)) { | |
1223 | if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) | |
1224 | auth_data = 1; | |
1225 | if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) | |
1226 | auth_forward = 1; | |
1227 | } | |
1228 | ||
1229 | OPENSSL_free(authchunks); | |
1230 | ||
1231 | if (!auth_data || !auth_forward) { | |
1232 | BIOerr(BIO_F_DGRAM_SCTP_READ, BIO_R_CONNECT_ERROR); | |
1233 | return -1; | |
1234 | } | |
1235 | ||
1236 | data->peer_auth_tested = 1; | |
1237 | } | |
1238 | } | |
1239 | return (ret); | |
1240 | } | |
7e159e01 | 1241 | |
7f098cb4 KR |
1242 | /* |
1243 | * dgram_sctp_write - send message on SCTP socket | |
1244 | * @b: BIO to write to | |
1245 | * @in: data to send | |
1246 | * @inl: amount of bytes in @in to send | |
1247 | * | |
1248 | * Returns -1 on error or the sent amount of bytes on success | |
1249 | */ | |
7e159e01 | 1250 | static int dgram_sctp_write(BIO *b, const char *in, int inl) |
0f113f3e MC |
1251 | { |
1252 | int ret; | |
1253 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1254 | struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo); | |
1255 | struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo); | |
1256 | struct bio_dgram_sctp_sndinfo handshake_sinfo; | |
1257 | struct iovec iov[1]; | |
1258 | struct msghdr msg; | |
1259 | struct cmsghdr *cmsg; | |
1260 | # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO) | |
1261 | char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) + | |
1262 | CMSG_SPACE(sizeof(struct sctp_prinfo))]; | |
1263 | struct sctp_sndinfo *sndinfo; | |
1264 | struct sctp_prinfo *prinfo; | |
1265 | # else | |
1266 | char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; | |
1267 | struct sctp_sndrcvinfo *sndrcvinfo; | |
1268 | # endif | |
7e159e01 | 1269 | |
0f113f3e | 1270 | clear_socket_error(); |
7e159e01 | 1271 | |
0f113f3e MC |
1272 | /* |
1273 | * If we're send anything else than application data, disable all user | |
1274 | * parameters and flags. | |
1275 | */ | |
1276 | if (in[0] != 23) { | |
16f8d4eb | 1277 | memset(&handshake_sinfo, 0, sizeof(handshake_sinfo)); |
0f113f3e MC |
1278 | # ifdef SCTP_SACK_IMMEDIATELY |
1279 | handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY; | |
1280 | # endif | |
1281 | sinfo = &handshake_sinfo; | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * If we have to send a shutdown alert message and the socket is not dry | |
1286 | * yet, we have to save it and send it as soon as the socket gets dry. | |
1287 | */ | |
03a1c850 KR |
1288 | if (data->save_shutdown) { |
1289 | ret = BIO_dgram_sctp_wait_for_dry(b); | |
1290 | if (ret < 0) { | |
918bb865 MC |
1291 | return -1; |
1292 | } | |
03a1c850 KR |
1293 | if (ret == 0) { |
1294 | char *tmp; | |
1295 | data->saved_message.bio = b; | |
1296 | if ((tmp = OPENSSL_malloc(inl)) == NULL) { | |
1297 | BIOerr(BIO_F_DGRAM_SCTP_WRITE, ERR_R_MALLOC_FAILURE); | |
1298 | return -1; | |
1299 | } | |
1300 | OPENSSL_free(data->saved_message.data); | |
1301 | data->saved_message.data = tmp; | |
1302 | memcpy(data->saved_message.data, in, inl); | |
1303 | data->saved_message.length = inl; | |
1304 | return inl; | |
1305 | } | |
0f113f3e MC |
1306 | } |
1307 | ||
1308 | iov[0].iov_base = (char *)in; | |
1309 | iov[0].iov_len = inl; | |
1310 | msg.msg_name = NULL; | |
1311 | msg.msg_namelen = 0; | |
1312 | msg.msg_iov = iov; | |
1313 | msg.msg_iovlen = 1; | |
1314 | msg.msg_control = (caddr_t) cmsgbuf; | |
1315 | msg.msg_controllen = 0; | |
1316 | msg.msg_flags = 0; | |
1317 | # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO) | |
1318 | cmsg = (struct cmsghdr *)cmsgbuf; | |
1319 | cmsg->cmsg_level = IPPROTO_SCTP; | |
1320 | cmsg->cmsg_type = SCTP_SNDINFO; | |
1321 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); | |
1322 | sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg); | |
16f8d4eb | 1323 | memset(sndinfo, 0, sizeof(*sndinfo)); |
0f113f3e MC |
1324 | sndinfo->snd_sid = sinfo->snd_sid; |
1325 | sndinfo->snd_flags = sinfo->snd_flags; | |
1326 | sndinfo->snd_ppid = sinfo->snd_ppid; | |
1327 | sndinfo->snd_context = sinfo->snd_context; | |
1328 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); | |
1329 | ||
1330 | cmsg = | |
1331 | (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))]; | |
1332 | cmsg->cmsg_level = IPPROTO_SCTP; | |
1333 | cmsg->cmsg_type = SCTP_PRINFO; | |
1334 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); | |
1335 | prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg); | |
16f8d4eb | 1336 | memset(prinfo, 0, sizeof(*prinfo)); |
0f113f3e MC |
1337 | prinfo->pr_policy = pinfo->pr_policy; |
1338 | prinfo->pr_value = pinfo->pr_value; | |
1339 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); | |
1340 | # else | |
1341 | cmsg = (struct cmsghdr *)cmsgbuf; | |
1342 | cmsg->cmsg_level = IPPROTO_SCTP; | |
1343 | cmsg->cmsg_type = SCTP_SNDRCV; | |
1344 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); | |
1345 | sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); | |
16f8d4eb | 1346 | memset(sndrcvinfo, 0, sizeof(*sndrcvinfo)); |
0f113f3e MC |
1347 | sndrcvinfo->sinfo_stream = sinfo->snd_sid; |
1348 | sndrcvinfo->sinfo_flags = sinfo->snd_flags; | |
1349 | # ifdef __FreeBSD__ | |
1350 | sndrcvinfo->sinfo_flags |= pinfo->pr_policy; | |
1351 | # endif | |
1352 | sndrcvinfo->sinfo_ppid = sinfo->snd_ppid; | |
1353 | sndrcvinfo->sinfo_context = sinfo->snd_context; | |
1354 | sndrcvinfo->sinfo_timetolive = pinfo->pr_value; | |
1355 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo)); | |
1356 | # endif | |
7e159e01 | 1357 | |
0f113f3e | 1358 | ret = sendmsg(b->num, &msg, 0); |
7e159e01 | 1359 | |
0f113f3e MC |
1360 | BIO_clear_retry_flags(b); |
1361 | if (ret <= 0) { | |
1362 | if (BIO_dgram_should_retry(ret)) { | |
1363 | BIO_set_retry_write(b); | |
1364 | data->_errno = get_last_socket_error(); | |
1365 | } | |
1366 | } | |
1367 | return (ret); | |
1368 | } | |
7e159e01 DSH |
1369 | |
1370 | static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr) | |
0f113f3e MC |
1371 | { |
1372 | long ret = 1; | |
1373 | bio_dgram_sctp_data *data = NULL; | |
1374 | socklen_t sockopt_len = 0; | |
1375 | struct sctp_authkeyid authkeyid; | |
1376 | struct sctp_authkey *authkey = NULL; | |
1377 | ||
1378 | data = (bio_dgram_sctp_data *) b->ptr; | |
1379 | ||
1380 | switch (cmd) { | |
1381 | case BIO_CTRL_DGRAM_QUERY_MTU: | |
1382 | /* | |
1383 | * Set to maximum (2^14) and ignore user input to enable transport | |
1384 | * protocol fragmentation. Returns always 2^14. | |
1385 | */ | |
1386 | data->mtu = 16384; | |
1387 | ret = data->mtu; | |
1388 | break; | |
1389 | case BIO_CTRL_DGRAM_SET_MTU: | |
1390 | /* | |
1391 | * Set to maximum (2^14) and ignore input to enable transport | |
1392 | * protocol fragmentation. Returns always 2^14. | |
1393 | */ | |
1394 | data->mtu = 16384; | |
1395 | ret = data->mtu; | |
1396 | break; | |
1397 | case BIO_CTRL_DGRAM_SET_CONNECTED: | |
1398 | case BIO_CTRL_DGRAM_CONNECT: | |
1399 | /* Returns always -1. */ | |
1400 | ret = -1; | |
1401 | break; | |
1402 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT: | |
1403 | /* | |
1404 | * SCTP doesn't need the DTLS timer Returns always 1. | |
1405 | */ | |
1406 | break; | |
1407 | case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD: | |
1408 | /* | |
1409 | * We allow transport protocol fragmentation so this is irrelevant | |
1410 | */ | |
1411 | ret = 0; | |
1412 | break; | |
1413 | case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE: | |
1414 | if (num > 0) | |
1415 | data->in_handshake = 1; | |
1416 | else | |
1417 | data->in_handshake = 0; | |
1418 | ||
1419 | ret = | |
1420 | setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY, | |
1421 | &data->in_handshake, sizeof(int)); | |
1422 | break; | |
1423 | case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY: | |
1424 | /* | |
1425 | * New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise. | |
1426 | */ | |
1427 | ||
1428 | /* Get active key */ | |
1429 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1430 | ret = | |
1431 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, | |
1432 | &sockopt_len); | |
1433 | if (ret < 0) | |
1434 | break; | |
1435 | ||
1436 | /* Add new key */ | |
1437 | sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t); | |
1438 | authkey = OPENSSL_malloc(sockopt_len); | |
1439 | if (authkey == NULL) { | |
1440 | ret = -1; | |
1441 | break; | |
1442 | } | |
16f8d4eb | 1443 | memset(authkey, 0, sockopt_len); |
0f113f3e MC |
1444 | authkey->sca_keynumber = authkeyid.scact_keynumber + 1; |
1445 | # ifndef __FreeBSD__ | |
1446 | /* | |
1447 | * This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3 | |
1448 | * and higher work without it. | |
1449 | */ | |
1450 | authkey->sca_keylength = 64; | |
1451 | # endif | |
1452 | memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t)); | |
1453 | ||
1454 | ret = | |
1455 | setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey, | |
1456 | sockopt_len); | |
1457 | OPENSSL_free(authkey); | |
1458 | authkey = NULL; | |
1459 | if (ret < 0) | |
1460 | break; | |
1461 | ||
1462 | /* Reset active key */ | |
1463 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
1464 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1465 | if (ret < 0) | |
1466 | break; | |
1467 | ||
1468 | break; | |
1469 | case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY: | |
1470 | /* Returns 0 on success, -1 otherwise. */ | |
1471 | ||
1472 | /* Get active key */ | |
1473 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1474 | ret = | |
1475 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, | |
1476 | &sockopt_len); | |
1477 | if (ret < 0) | |
1478 | break; | |
1479 | ||
1480 | /* Set active key */ | |
1481 | authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1; | |
1482 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
1483 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1484 | if (ret < 0) | |
1485 | break; | |
1486 | ||
1487 | /* | |
1488 | * CCS has been sent, so remember that and fall through to check if | |
1489 | * we need to deactivate an old key | |
1490 | */ | |
1491 | data->ccs_sent = 1; | |
1492 | ||
1493 | case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD: | |
1494 | /* Returns 0 on success, -1 otherwise. */ | |
1495 | ||
1496 | /* | |
1497 | * Has this command really been called or is this just a | |
1498 | * fall-through? | |
1499 | */ | |
1500 | if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD) | |
1501 | data->ccs_rcvd = 1; | |
1502 | ||
1503 | /* | |
1504 | * CSS has been both, received and sent, so deactivate an old key | |
1505 | */ | |
1506 | if (data->ccs_rcvd == 1 && data->ccs_sent == 1) { | |
1507 | /* Get active key */ | |
1508 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1509 | ret = | |
1510 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
1511 | &authkeyid, &sockopt_len); | |
1512 | if (ret < 0) | |
1513 | break; | |
1514 | ||
1515 | /* | |
1516 | * Deactivate key or delete second last key if | |
1517 | * SCTP_AUTHENTICATION_EVENT is not available. | |
1518 | */ | |
1519 | authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1; | |
1520 | # ifdef SCTP_AUTH_DEACTIVATE_KEY | |
1521 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1522 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY, | |
1523 | &authkeyid, sockopt_len); | |
1524 | if (ret < 0) | |
1525 | break; | |
1526 | # endif | |
1527 | # ifndef SCTP_AUTHENTICATION_EVENT | |
1528 | if (authkeyid.scact_keynumber > 0) { | |
1529 | authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1; | |
1530 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY, | |
1531 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1532 | if (ret < 0) | |
1533 | break; | |
1534 | } | |
1535 | # endif | |
7e159e01 | 1536 | |
0f113f3e MC |
1537 | data->ccs_rcvd = 0; |
1538 | data->ccs_sent = 0; | |
1539 | } | |
1540 | break; | |
1541 | case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO: | |
1542 | /* Returns the size of the copied struct. */ | |
1543 | if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo)) | |
1544 | num = sizeof(struct bio_dgram_sctp_sndinfo); | |
1545 | ||
1546 | memcpy(ptr, &(data->sndinfo), num); | |
1547 | ret = num; | |
1548 | break; | |
1549 | case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO: | |
1550 | /* Returns the size of the copied struct. */ | |
1551 | if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo)) | |
1552 | num = sizeof(struct bio_dgram_sctp_sndinfo); | |
1553 | ||
1554 | memcpy(&(data->sndinfo), ptr, num); | |
1555 | break; | |
1556 | case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO: | |
1557 | /* Returns the size of the copied struct. */ | |
1558 | if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo)) | |
1559 | num = sizeof(struct bio_dgram_sctp_rcvinfo); | |
1560 | ||
1561 | memcpy(ptr, &data->rcvinfo, num); | |
1562 | ||
1563 | ret = num; | |
1564 | break; | |
1565 | case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO: | |
1566 | /* Returns the size of the copied struct. */ | |
1567 | if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo)) | |
1568 | num = sizeof(struct bio_dgram_sctp_rcvinfo); | |
1569 | ||
1570 | memcpy(&(data->rcvinfo), ptr, num); | |
1571 | break; | |
1572 | case BIO_CTRL_DGRAM_SCTP_GET_PRINFO: | |
1573 | /* Returns the size of the copied struct. */ | |
1574 | if (num > (long)sizeof(struct bio_dgram_sctp_prinfo)) | |
1575 | num = sizeof(struct bio_dgram_sctp_prinfo); | |
1576 | ||
1577 | memcpy(ptr, &(data->prinfo), num); | |
1578 | ret = num; | |
1579 | break; | |
1580 | case BIO_CTRL_DGRAM_SCTP_SET_PRINFO: | |
1581 | /* Returns the size of the copied struct. */ | |
1582 | if (num > (long)sizeof(struct bio_dgram_sctp_prinfo)) | |
1583 | num = sizeof(struct bio_dgram_sctp_prinfo); | |
1584 | ||
1585 | memcpy(&(data->prinfo), ptr, num); | |
1586 | break; | |
1587 | case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN: | |
1588 | /* Returns always 1. */ | |
1589 | if (num > 0) | |
1590 | data->save_shutdown = 1; | |
1591 | else | |
1592 | data->save_shutdown = 0; | |
1593 | break; | |
1594 | ||
1595 | default: | |
1596 | /* | |
1597 | * Pass to default ctrl function to process SCTP unspecific commands | |
1598 | */ | |
1599 | ret = dgram_ctrl(b, cmd, num, ptr); | |
1600 | break; | |
1601 | } | |
1602 | return (ret); | |
1603 | } | |
7e159e01 DSH |
1604 | |
1605 | int BIO_dgram_sctp_notification_cb(BIO *b, | |
0f113f3e MC |
1606 | void (*handle_notifications) (BIO *bio, |
1607 | void | |
1608 | *context, | |
1609 | void *buf), | |
7e159e01 | 1610 | void *context) |
0f113f3e MC |
1611 | { |
1612 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
7e159e01 | 1613 | |
0f113f3e MC |
1614 | if (handle_notifications != NULL) { |
1615 | data->handle_notifications = handle_notifications; | |
1616 | data->notification_context = context; | |
1617 | } else | |
1618 | return -1; | |
7e159e01 | 1619 | |
0f113f3e MC |
1620 | return 0; |
1621 | } | |
7e159e01 | 1622 | |
03a1c850 KR |
1623 | /* |
1624 | * BIO_dgram_sctp_wait_for_dry - Wait for SCTP SENDER_DRY event | |
1625 | * @b: The BIO to check for the dry event | |
1626 | * | |
1627 | * Wait until the peer confirms all packets have been received, and so that | |
1628 | * our kernel doesn't have anything to send anymore. This is only received by | |
1629 | * the peer's kernel, not the application. | |
1630 | * | |
1631 | * Returns: | |
1632 | * -1 on error | |
1633 | * 0 when not dry yet | |
1634 | * 1 when dry | |
1635 | */ | |
7e159e01 DSH |
1636 | int BIO_dgram_sctp_wait_for_dry(BIO *b) |
1637 | { | |
0f113f3e | 1638 | int is_dry = 0; |
4eacfade BL |
1639 | int sockflags = 0; |
1640 | int n, ret; | |
0f113f3e MC |
1641 | union sctp_notification snp; |
1642 | struct msghdr msg; | |
1643 | struct iovec iov; | |
1644 | # ifdef SCTP_EVENT | |
1645 | struct sctp_event event; | |
1646 | # else | |
1647 | struct sctp_event_subscribe event; | |
1648 | socklen_t eventsize; | |
1649 | # endif | |
1650 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1651 | ||
1652 | /* set sender dry event */ | |
1653 | # ifdef SCTP_EVENT | |
16f8d4eb | 1654 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
1655 | event.se_assoc_id = 0; |
1656 | event.se_type = SCTP_SENDER_DRY_EVENT; | |
1657 | event.se_on = 1; | |
1658 | ret = | |
1659 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, | |
1660 | sizeof(struct sctp_event)); | |
1661 | # else | |
1662 | eventsize = sizeof(struct sctp_event_subscribe); | |
1663 | ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize); | |
1664 | if (ret < 0) | |
1665 | return -1; | |
1666 | ||
1667 | event.sctp_sender_dry_event = 1; | |
1668 | ||
1669 | ret = | |
1670 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1671 | sizeof(struct sctp_event_subscribe)); | |
1672 | # endif | |
1673 | if (ret < 0) | |
1674 | return -1; | |
1675 | ||
1676 | /* peek for notification */ | |
16f8d4eb | 1677 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1678 | iov.iov_base = (char *)&snp; |
1679 | iov.iov_len = sizeof(union sctp_notification); | |
1680 | msg.msg_name = NULL; | |
1681 | msg.msg_namelen = 0; | |
1682 | msg.msg_iov = &iov; | |
1683 | msg.msg_iovlen = 1; | |
1684 | msg.msg_control = NULL; | |
1685 | msg.msg_controllen = 0; | |
1686 | msg.msg_flags = 0; | |
1687 | ||
1688 | n = recvmsg(b->num, &msg, MSG_PEEK); | |
1689 | if (n <= 0) { | |
1690 | if ((n < 0) && (get_last_socket_error() != EAGAIN) | |
1691 | && (get_last_socket_error() != EWOULDBLOCK)) | |
1692 | return -1; | |
1693 | else | |
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | /* if we find a notification, process it and try again if necessary */ | |
1698 | while (msg.msg_flags & MSG_NOTIFICATION) { | |
16f8d4eb | 1699 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1700 | iov.iov_base = (char *)&snp; |
1701 | iov.iov_len = sizeof(union sctp_notification); | |
1702 | msg.msg_name = NULL; | |
1703 | msg.msg_namelen = 0; | |
1704 | msg.msg_iov = &iov; | |
1705 | msg.msg_iovlen = 1; | |
1706 | msg.msg_control = NULL; | |
1707 | msg.msg_controllen = 0; | |
1708 | msg.msg_flags = 0; | |
1709 | ||
1710 | n = recvmsg(b->num, &msg, 0); | |
1711 | if (n <= 0) { | |
1712 | if ((n < 0) && (get_last_socket_error() != EAGAIN) | |
1713 | && (get_last_socket_error() != EWOULDBLOCK)) | |
1714 | return -1; | |
1715 | else | |
1716 | return is_dry; | |
1717 | } | |
1718 | ||
1719 | if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) { | |
1720 | is_dry = 1; | |
1721 | ||
1722 | /* disable sender dry event */ | |
1723 | # ifdef SCTP_EVENT | |
16f8d4eb | 1724 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
1725 | event.se_assoc_id = 0; |
1726 | event.se_type = SCTP_SENDER_DRY_EVENT; | |
1727 | event.se_on = 0; | |
1728 | ret = | |
1729 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, | |
1730 | sizeof(struct sctp_event)); | |
1731 | # else | |
1732 | eventsize = (socklen_t) sizeof(struct sctp_event_subscribe); | |
1733 | ret = | |
1734 | getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1735 | &eventsize); | |
1736 | if (ret < 0) | |
1737 | return -1; | |
1738 | ||
1739 | event.sctp_sender_dry_event = 0; | |
1740 | ||
1741 | ret = | |
1742 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1743 | sizeof(struct sctp_event_subscribe)); | |
1744 | # endif | |
1745 | if (ret < 0) | |
1746 | return -1; | |
1747 | } | |
1748 | # ifdef SCTP_AUTHENTICATION_EVENT | |
1749 | if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
1750 | dgram_sctp_handle_auth_free_key_event(b, &snp); | |
1751 | # endif | |
7e159e01 | 1752 | |
0f113f3e MC |
1753 | if (data->handle_notifications != NULL) |
1754 | data->handle_notifications(b, data->notification_context, | |
1755 | (void *)&snp); | |
1756 | ||
1757 | /* found notification, peek again */ | |
16f8d4eb | 1758 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1759 | iov.iov_base = (char *)&snp; |
1760 | iov.iov_len = sizeof(union sctp_notification); | |
1761 | msg.msg_name = NULL; | |
1762 | msg.msg_namelen = 0; | |
1763 | msg.msg_iov = &iov; | |
1764 | msg.msg_iovlen = 1; | |
1765 | msg.msg_control = NULL; | |
1766 | msg.msg_controllen = 0; | |
1767 | msg.msg_flags = 0; | |
1768 | ||
1769 | /* if we have seen the dry already, don't wait */ | |
1770 | if (is_dry) { | |
1771 | sockflags = fcntl(b->num, F_GETFL, 0); | |
1772 | fcntl(b->num, F_SETFL, O_NONBLOCK); | |
1773 | } | |
1774 | ||
1775 | n = recvmsg(b->num, &msg, MSG_PEEK); | |
1776 | ||
1777 | if (is_dry) { | |
1778 | fcntl(b->num, F_SETFL, sockflags); | |
1779 | } | |
1780 | ||
1781 | if (n <= 0) { | |
1782 | if ((n < 0) && (get_last_socket_error() != EAGAIN) | |
1783 | && (get_last_socket_error() != EWOULDBLOCK)) | |
1784 | return -1; | |
1785 | else | |
1786 | return is_dry; | |
1787 | } | |
1788 | } | |
1789 | ||
1790 | /* read anything else */ | |
1791 | return is_dry; | |
7e159e01 DSH |
1792 | } |
1793 | ||
1794 | int BIO_dgram_sctp_msg_waiting(BIO *b) | |
0f113f3e MC |
1795 | { |
1796 | int n, sockflags; | |
1797 | union sctp_notification snp; | |
1798 | struct msghdr msg; | |
1799 | struct iovec iov; | |
1800 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1801 | ||
1802 | /* Check if there are any messages waiting to be read */ | |
1803 | do { | |
16f8d4eb | 1804 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1805 | iov.iov_base = (char *)&snp; |
1806 | iov.iov_len = sizeof(union sctp_notification); | |
1807 | msg.msg_name = NULL; | |
1808 | msg.msg_namelen = 0; | |
1809 | msg.msg_iov = &iov; | |
1810 | msg.msg_iovlen = 1; | |
1811 | msg.msg_control = NULL; | |
1812 | msg.msg_controllen = 0; | |
1813 | msg.msg_flags = 0; | |
1814 | ||
1815 | sockflags = fcntl(b->num, F_GETFL, 0); | |
1816 | fcntl(b->num, F_SETFL, O_NONBLOCK); | |
1817 | n = recvmsg(b->num, &msg, MSG_PEEK); | |
1818 | fcntl(b->num, F_SETFL, sockflags); | |
1819 | ||
1820 | /* if notification, process and try again */ | |
1821 | if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)) { | |
1822 | # ifdef SCTP_AUTHENTICATION_EVENT | |
1823 | if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
1824 | dgram_sctp_handle_auth_free_key_event(b, &snp); | |
1825 | # endif | |
7e159e01 | 1826 | |
16f8d4eb | 1827 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1828 | iov.iov_base = (char *)&snp; |
1829 | iov.iov_len = sizeof(union sctp_notification); | |
1830 | msg.msg_name = NULL; | |
1831 | msg.msg_namelen = 0; | |
1832 | msg.msg_iov = &iov; | |
1833 | msg.msg_iovlen = 1; | |
1834 | msg.msg_control = NULL; | |
1835 | msg.msg_controllen = 0; | |
1836 | msg.msg_flags = 0; | |
1837 | n = recvmsg(b->num, &msg, 0); | |
1838 | ||
1839 | if (data->handle_notifications != NULL) | |
1840 | data->handle_notifications(b, data->notification_context, | |
1841 | (void *)&snp); | |
1842 | } | |
1843 | ||
1844 | } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)); | |
1845 | ||
1846 | /* Return 1 if there is a message to be read, return 0 otherwise. */ | |
1847 | if (n > 0) | |
1848 | return 1; | |
1849 | else | |
1850 | return 0; | |
1851 | } | |
7e159e01 DSH |
1852 | |
1853 | static int dgram_sctp_puts(BIO *bp, const char *str) | |
0f113f3e MC |
1854 | { |
1855 | int n, ret; | |
7e159e01 | 1856 | |
0f113f3e MC |
1857 | n = strlen(str); |
1858 | ret = dgram_sctp_write(bp, str, n); | |
1859 | return (ret); | |
1860 | } | |
1861 | # endif | |
7e159e01 | 1862 | |
b3e72fc3 | 1863 | static int BIO_dgram_should_retry(int i) |
0f113f3e MC |
1864 | { |
1865 | int err; | |
36d16f8e | 1866 | |
0f113f3e MC |
1867 | if ((i == 0) || (i == -1)) { |
1868 | err = get_last_socket_error(); | |
36d16f8e | 1869 | |
0f113f3e MC |
1870 | # if defined(OPENSSL_SYS_WINDOWS) |
1871 | /* | |
1872 | * If the socket return value (i) is -1 and err is unexpectedly 0 at | |
1873 | * this point, the error code was overwritten by another system call | |
1874 | * before this error handling is called. | |
1875 | */ | |
36d16f8e BL |
1876 | # endif |
1877 | ||
0f113f3e MC |
1878 | return (BIO_dgram_non_fatal_error(err)); |
1879 | } | |
1880 | return (0); | |
1881 | } | |
1882 | ||
1883 | int BIO_dgram_non_fatal_error(int err) | |
1884 | { | |
1885 | switch (err) { | |
1886 | # if defined(OPENSSL_SYS_WINDOWS) | |
1887 | # if defined(WSAEWOULDBLOCK) | |
1888 | case WSAEWOULDBLOCK: | |
1889 | # endif | |
36d16f8e | 1890 | # endif |
36d16f8e | 1891 | |
0f113f3e MC |
1892 | # ifdef EWOULDBLOCK |
1893 | # ifdef WSAEWOULDBLOCK | |
1894 | # if WSAEWOULDBLOCK != EWOULDBLOCK | |
1895 | case EWOULDBLOCK: | |
1896 | # endif | |
1897 | # else | |
1898 | case EWOULDBLOCK: | |
36d16f8e | 1899 | # endif |
36d16f8e | 1900 | # endif |
36d16f8e | 1901 | |
0f113f3e MC |
1902 | # ifdef EINTR |
1903 | case EINTR: | |
1904 | # endif | |
36d16f8e | 1905 | |
0f113f3e MC |
1906 | # ifdef EAGAIN |
1907 | # if EWOULDBLOCK != EAGAIN | |
1908 | case EAGAIN: | |
1909 | # endif | |
36d16f8e | 1910 | # endif |
36d16f8e | 1911 | |
0f113f3e MC |
1912 | # ifdef EPROTO |
1913 | case EPROTO: | |
1914 | # endif | |
36d16f8e | 1915 | |
0f113f3e MC |
1916 | # ifdef EINPROGRESS |
1917 | case EINPROGRESS: | |
1918 | # endif | |
36d16f8e | 1919 | |
0f113f3e MC |
1920 | # ifdef EALREADY |
1921 | case EALREADY: | |
1922 | # endif | |
36d16f8e | 1923 | |
0f113f3e | 1924 | return (1); |
0f113f3e MC |
1925 | default: |
1926 | break; | |
1927 | } | |
1928 | return (0); | |
1929 | } | |
5d6a0179 RL |
1930 | |
1931 | static void get_current_time(struct timeval *t) | |
0f113f3e MC |
1932 | { |
1933 | # if defined(_WIN32) | |
1934 | SYSTEMTIME st; | |
1935 | union { | |
1936 | unsigned __int64 ul; | |
1937 | FILETIME ft; | |
1938 | } now; | |
1939 | ||
1940 | GetSystemTime(&st); | |
1941 | SystemTimeToFileTime(&st, &now.ft); | |
1942 | # ifdef __MINGW32__ | |
1943 | now.ul -= 116444736000000000ULL; | |
1944 | # else | |
d2a0d72f | 1945 | now.ul -= 116444736000000000UI64; /* re-bias to 1/1/1970 */ |
0f113f3e MC |
1946 | # endif |
1947 | t->tv_sec = (long)(now.ul / 10000000); | |
1948 | t->tv_usec = ((int)(now.ul % 10000000)) / 10; | |
0f113f3e MC |
1949 | # else |
1950 | gettimeofday(t, NULL); | |
1951 | # endif | |
1952 | } | |
74e056ed DSH |
1953 | |
1954 | #endif |