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Commit | Line | Data |
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0f113f3e | 1 | /* |
3c7d0945 | 2 | * Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved. |
36d16f8e | 3 | * |
09abbca1 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
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 | |
0f113f3e MC |
16 | # ifndef OPENSSL_NO_SCTP |
17 | # include <netinet/sctp.h> | |
18 | # include <fcntl.h> | |
19 | # define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00 | |
20 | # define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0 | |
21 | # endif | |
7e159e01 | 22 | |
0f113f3e MC |
23 | # if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU) |
24 | # define IP_MTU 14 /* linux is lame */ | |
25 | # endif | |
36d16f8e | 26 | |
0f113f3e MC |
27 | # if OPENSSL_USE_IPV6 && !defined(IPPROTO_IPV6) |
28 | # define IPPROTO_IPV6 41 /* windows is lame */ | |
29 | # endif | |
5833e4f5 | 30 | |
0f113f3e | 31 | # if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED) |
03c1d9f9 | 32 | /* Standard definition causes type-punning problems. */ |
0f113f3e MC |
33 | # undef IN6_IS_ADDR_V4MAPPED |
34 | # define s6_addr32 __u6_addr.__u6_addr32 | |
35 | # define IN6_IS_ADDR_V4MAPPED(a) \ | |
03c1d9f9 BL |
36 | (((a)->s6_addr32[0] == 0) && \ |
37 | ((a)->s6_addr32[1] == 0) && \ | |
38 | ((a)->s6_addr32[2] == htonl(0x0000ffff))) | |
0f113f3e | 39 | # endif |
03c1d9f9 | 40 | |
36d16f8e BL |
41 | static int dgram_write(BIO *h, const char *buf, int num); |
42 | static int dgram_read(BIO *h, char *buf, int size); | |
43 | static int dgram_puts(BIO *h, const char *str); | |
44 | static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
45 | static int dgram_new(BIO *h); | |
46 | static int dgram_free(BIO *data); | |
47 | static int dgram_clear(BIO *bio); | |
48 | ||
0f113f3e | 49 | # ifndef OPENSSL_NO_SCTP |
7e159e01 DSH |
50 | static int dgram_sctp_write(BIO *h, const char *buf, int num); |
51 | static int dgram_sctp_read(BIO *h, char *buf, int size); | |
52 | static int dgram_sctp_puts(BIO *h, const char *str); | |
53 | static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
54 | static int dgram_sctp_new(BIO *h); | |
55 | static int dgram_sctp_free(BIO *data); | |
0f113f3e MC |
56 | # ifdef SCTP_AUTHENTICATION_EVENT |
57 | static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notification | |
58 | *snp); | |
59 | # endif | |
60 | # endif | |
7e159e01 | 61 | |
b3e72fc3 | 62 | static int BIO_dgram_should_retry(int s); |
36d16f8e | 63 | |
5d6a0179 RL |
64 | static void get_current_time(struct timeval *t); |
65 | ||
04f6b0fd | 66 | static const BIO_METHOD methods_dgramp = { |
0f113f3e MC |
67 | BIO_TYPE_DGRAM, |
68 | "datagram socket", | |
3befffa3 MC |
69 | /* TODO: Convert to new style write function */ |
70 | bwrite_conv, | |
0f113f3e | 71 | dgram_write, |
d07aee2c MC |
72 | /* TODO: Convert to new style read function */ |
73 | bread_conv, | |
0f113f3e MC |
74 | dgram_read, |
75 | dgram_puts, | |
b4ff6622 | 76 | NULL, /* dgram_gets, */ |
0f113f3e MC |
77 | dgram_ctrl, |
78 | dgram_new, | |
79 | dgram_free, | |
b4ff6622 | 80 | NULL, /* dgram_callback_ctrl */ |
0f113f3e MC |
81 | }; |
82 | ||
83 | # ifndef OPENSSL_NO_SCTP | |
04f6b0fd | 84 | static const BIO_METHOD methods_dgramp_sctp = { |
0f113f3e MC |
85 | BIO_TYPE_DGRAM_SCTP, |
86 | "datagram sctp socket", | |
992155d0 RL |
87 | /* TODO: Convert to new style write function */ |
88 | bwrite_conv, | |
0f113f3e | 89 | dgram_sctp_write, |
992155d0 RL |
90 | /* TODO: Convert to new style write function */ |
91 | bread_conv, | |
0f113f3e MC |
92 | dgram_sctp_read, |
93 | dgram_sctp_puts, | |
b4ff6622 | 94 | NULL, /* dgram_gets, */ |
0f113f3e MC |
95 | dgram_sctp_ctrl, |
96 | dgram_sctp_new, | |
97 | dgram_sctp_free, | |
b4ff6622 | 98 | NULL, /* dgram_callback_ctrl */ |
0f113f3e MC |
99 | }; |
100 | # endif | |
7e159e01 | 101 | |
0f113f3e | 102 | typedef struct bio_dgram_data_st { |
d858c876 | 103 | BIO_ADDR peer; |
0f113f3e MC |
104 | unsigned int connected; |
105 | unsigned int _errno; | |
106 | unsigned int mtu; | |
107 | struct timeval next_timeout; | |
108 | struct timeval socket_timeout; | |
01b7851a | 109 | unsigned int peekmode; |
0f113f3e MC |
110 | } bio_dgram_data; |
111 | ||
112 | # ifndef OPENSSL_NO_SCTP | |
113 | typedef struct bio_dgram_sctp_save_message_st { | |
114 | BIO *bio; | |
115 | char *data; | |
116 | int length; | |
117 | } bio_dgram_sctp_save_message; | |
118 | ||
119 | typedef struct bio_dgram_sctp_data_st { | |
d858c876 | 120 | BIO_ADDR peer; |
0f113f3e MC |
121 | unsigned int connected; |
122 | unsigned int _errno; | |
123 | unsigned int mtu; | |
124 | struct bio_dgram_sctp_sndinfo sndinfo; | |
125 | struct bio_dgram_sctp_rcvinfo rcvinfo; | |
126 | struct bio_dgram_sctp_prinfo prinfo; | |
127 | void (*handle_notifications) (BIO *bio, void *context, void *buf); | |
128 | void *notification_context; | |
129 | int in_handshake; | |
130 | int ccs_rcvd; | |
131 | int ccs_sent; | |
132 | int save_shutdown; | |
133 | int peer_auth_tested; | |
0f113f3e MC |
134 | } bio_dgram_sctp_data; |
135 | # endif | |
7e159e01 | 136 | |
04f6b0fd | 137 | const BIO_METHOD *BIO_s_datagram(void) |
0f113f3e | 138 | { |
26a7d938 | 139 | return &methods_dgramp; |
0f113f3e | 140 | } |
36d16f8e BL |
141 | |
142 | BIO *BIO_new_dgram(int fd, int close_flag) | |
0f113f3e MC |
143 | { |
144 | BIO *ret; | |
36d16f8e | 145 | |
0f113f3e MC |
146 | ret = BIO_new(BIO_s_datagram()); |
147 | if (ret == NULL) | |
26a7d938 | 148 | return NULL; |
0f113f3e | 149 | BIO_set_fd(ret, fd, close_flag); |
26a7d938 | 150 | return ret; |
0f113f3e | 151 | } |
36d16f8e BL |
152 | |
153 | static int dgram_new(BIO *bi) | |
0f113f3e | 154 | { |
b51bce94 | 155 | bio_dgram_data *data = OPENSSL_zalloc(sizeof(*data)); |
0f113f3e | 156 | |
0f113f3e MC |
157 | if (data == NULL) |
158 | return 0; | |
36d16f8e | 159 | bi->ptr = data; |
208fb891 | 160 | return 1; |
0f113f3e | 161 | } |
36d16f8e BL |
162 | |
163 | static int dgram_free(BIO *a) | |
0f113f3e MC |
164 | { |
165 | bio_dgram_data *data; | |
36d16f8e | 166 | |
0f113f3e | 167 | if (a == NULL) |
26a7d938 | 168 | return 0; |
0f113f3e MC |
169 | if (!dgram_clear(a)) |
170 | return 0; | |
36d16f8e | 171 | |
0f113f3e | 172 | data = (bio_dgram_data *)a->ptr; |
b548a1f1 | 173 | OPENSSL_free(data); |
36d16f8e | 174 | |
208fb891 | 175 | return 1; |
0f113f3e | 176 | } |
36d16f8e BL |
177 | |
178 | static int dgram_clear(BIO *a) | |
0f113f3e MC |
179 | { |
180 | if (a == NULL) | |
26a7d938 | 181 | return 0; |
0f113f3e MC |
182 | if (a->shutdown) { |
183 | if (a->init) { | |
8731a4fc | 184 | BIO_closesocket(a->num); |
0f113f3e MC |
185 | } |
186 | a->init = 0; | |
187 | a->flags = 0; | |
188 | } | |
208fb891 | 189 | return 1; |
0f113f3e | 190 | } |
eb38b26d DSH |
191 | |
192 | static void dgram_adjust_rcv_timeout(BIO *b) | |
0f113f3e MC |
193 | { |
194 | # if defined(SO_RCVTIMEO) | |
195 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
196 | union { | |
197 | size_t s; | |
198 | int i; | |
199 | } sz = { | |
200 | 0 | |
201 | }; | |
202 | ||
203 | /* Is a timer active? */ | |
204 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) { | |
205 | struct timeval timenow, timeleft; | |
206 | ||
207 | /* Read current socket timeout */ | |
208 | # ifdef OPENSSL_SYS_WINDOWS | |
209 | int timeout; | |
210 | ||
211 | sz.i = sizeof(timeout); | |
212 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
213 | (void *)&timeout, &sz.i) < 0) { | |
214 | perror("getsockopt"); | |
215 | } else { | |
216 | data->socket_timeout.tv_sec = timeout / 1000; | |
217 | data->socket_timeout.tv_usec = (timeout % 1000) * 1000; | |
218 | } | |
219 | # else | |
220 | sz.i = sizeof(data->socket_timeout); | |
221 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
222 | &(data->socket_timeout), (void *)&sz) < 0) { | |
223 | perror("getsockopt"); | |
224 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) | |
225 | OPENSSL_assert(sz.s <= sizeof(data->socket_timeout)); | |
226 | # endif | |
eb38b26d | 227 | |
0f113f3e MC |
228 | /* Get current time */ |
229 | get_current_time(&timenow); | |
230 | ||
231 | /* Calculate time left until timer expires */ | |
232 | memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval)); | |
fc52ac90 MC |
233 | if (timeleft.tv_usec < timenow.tv_usec) { |
234 | timeleft.tv_usec = 1000000 - timenow.tv_usec + timeleft.tv_usec; | |
0f113f3e | 235 | timeleft.tv_sec--; |
fc52ac90 MC |
236 | } else { |
237 | timeleft.tv_usec -= timenow.tv_usec; | |
0f113f3e | 238 | } |
fc52ac90 | 239 | if (timeleft.tv_sec < timenow.tv_sec) { |
0f113f3e MC |
240 | timeleft.tv_sec = 0; |
241 | timeleft.tv_usec = 1; | |
fc52ac90 MC |
242 | } else { |
243 | timeleft.tv_sec -= timenow.tv_sec; | |
0f113f3e MC |
244 | } |
245 | ||
246 | /* | |
0d4fb843 | 247 | * Adjust socket timeout if next handshake message timer will expire |
0f113f3e MC |
248 | * earlier. |
249 | */ | |
250 | if ((data->socket_timeout.tv_sec == 0 | |
251 | && data->socket_timeout.tv_usec == 0) | |
252 | || (data->socket_timeout.tv_sec > timeleft.tv_sec) | |
253 | || (data->socket_timeout.tv_sec == timeleft.tv_sec | |
254 | && data->socket_timeout.tv_usec >= timeleft.tv_usec)) { | |
255 | # ifdef OPENSSL_SYS_WINDOWS | |
256 | timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 1000; | |
257 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
258 | (void *)&timeout, sizeof(timeout)) < 0) { | |
259 | perror("setsockopt"); | |
260 | } | |
261 | # else | |
262 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timeleft, | |
263 | sizeof(struct timeval)) < 0) { | |
264 | perror("setsockopt"); | |
265 | } | |
266 | # endif | |
267 | } | |
268 | } | |
269 | # endif | |
270 | } | |
eb38b26d DSH |
271 | |
272 | static void dgram_reset_rcv_timeout(BIO *b) | |
0f113f3e MC |
273 | { |
274 | # if defined(SO_RCVTIMEO) | |
275 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
276 | ||
277 | /* Is a timer active? */ | |
278 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) { | |
279 | # ifdef OPENSSL_SYS_WINDOWS | |
280 | int timeout = data->socket_timeout.tv_sec * 1000 + | |
281 | data->socket_timeout.tv_usec / 1000; | |
282 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
283 | (void *)&timeout, sizeof(timeout)) < 0) { | |
284 | perror("setsockopt"); | |
285 | } | |
286 | # else | |
287 | if (setsockopt | |
288 | (b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_timeout), | |
289 | sizeof(struct timeval)) < 0) { | |
290 | perror("setsockopt"); | |
291 | } | |
292 | # endif | |
293 | } | |
294 | # endif | |
295 | } | |
eb38b26d | 296 | |
36d16f8e | 297 | static int dgram_read(BIO *b, char *out, int outl) |
0f113f3e MC |
298 | { |
299 | int ret = 0; | |
300 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
01b7851a | 301 | int flags = 0; |
0f113f3e | 302 | |
d858c876 RL |
303 | BIO_ADDR peer; |
304 | socklen_t len = sizeof(peer); | |
0f113f3e MC |
305 | |
306 | if (out != NULL) { | |
307 | clear_socket_error(); | |
d858c876 | 308 | memset(&peer, 0, sizeof(peer)); |
0f113f3e | 309 | dgram_adjust_rcv_timeout(b); |
01b7851a MC |
310 | if (data->peekmode) |
311 | flags = MSG_PEEK; | |
d858c876 RL |
312 | ret = recvfrom(b->num, out, outl, flags, |
313 | BIO_ADDR_sockaddr_noconst(&peer), &len); | |
0f113f3e MC |
314 | |
315 | if (!data->connected && ret >= 0) | |
d858c876 | 316 | BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &peer); |
0f113f3e MC |
317 | |
318 | BIO_clear_retry_flags(b); | |
319 | if (ret < 0) { | |
320 | if (BIO_dgram_should_retry(ret)) { | |
321 | BIO_set_retry_read(b); | |
322 | data->_errno = get_last_socket_error(); | |
323 | } | |
324 | } | |
325 | ||
326 | dgram_reset_rcv_timeout(b); | |
327 | } | |
26a7d938 | 328 | return ret; |
0f113f3e | 329 | } |
36d16f8e BL |
330 | |
331 | static int dgram_write(BIO *b, const char *in, int inl) | |
0f113f3e MC |
332 | { |
333 | int ret; | |
334 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
335 | clear_socket_error(); | |
336 | ||
337 | if (data->connected) | |
338 | ret = writesocket(b->num, in, inl); | |
339 | else { | |
d858c876 | 340 | int peerlen = BIO_ADDR_sockaddr_size(&data->peer); |
0f113f3e | 341 | |
d858c876 RL |
342 | ret = sendto(b->num, in, inl, 0, |
343 | BIO_ADDR_sockaddr(&data->peer), peerlen); | |
0f113f3e MC |
344 | } |
345 | ||
346 | BIO_clear_retry_flags(b); | |
347 | if (ret <= 0) { | |
348 | if (BIO_dgram_should_retry(ret)) { | |
349 | BIO_set_retry_write(b); | |
350 | data->_errno = get_last_socket_error(); | |
0f113f3e MC |
351 | } |
352 | } | |
26a7d938 | 353 | return ret; |
0f113f3e | 354 | } |
36d16f8e | 355 | |
0d3ae34d | 356 | static long dgram_get_mtu_overhead(bio_dgram_data *data) |
0f113f3e MC |
357 | { |
358 | long ret; | |
359 | ||
d858c876 | 360 | switch (BIO_ADDR_family(&data->peer)) { |
0f113f3e MC |
361 | case AF_INET: |
362 | /* | |
363 | * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP | |
364 | */ | |
365 | ret = 28; | |
366 | break; | |
f36e9f11 | 367 | # if OPENSSL_USE_IPV6 |
0f113f3e | 368 | case AF_INET6: |
d858c876 | 369 | { |
0f113f3e | 370 | # ifdef IN6_IS_ADDR_V4MAPPED |
d858c876 RL |
371 | struct in6_addr tmp_addr; |
372 | if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL) | |
373 | && IN6_IS_ADDR_V4MAPPED(&tmp_addr)) | |
374 | /* | |
375 | * Assume this is UDP - 20 bytes for IP, 8 bytes for UDP | |
376 | */ | |
377 | ret = 28; | |
378 | else | |
0f113f3e MC |
379 | # endif |
380 | /* | |
381 | * Assume this is UDP - 40 bytes for IP, 8 bytes for UDP | |
382 | */ | |
383 | ret = 48; | |
d858c876 | 384 | } |
0f113f3e MC |
385 | break; |
386 | # endif | |
387 | default: | |
388 | /* We don't know. Go with the historical default */ | |
389 | ret = 28; | |
390 | break; | |
391 | } | |
392 | return ret; | |
393 | } | |
0d3ae34d | 394 | |
36d16f8e | 395 | static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr) |
0f113f3e MC |
396 | { |
397 | long ret = 1; | |
398 | int *ip; | |
0f113f3e MC |
399 | bio_dgram_data *data = NULL; |
400 | int sockopt_val = 0; | |
b5292f7b | 401 | int d_errno; |
0f113f3e MC |
402 | # if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU)) |
403 | socklen_t sockopt_len; /* assume that system supporting IP_MTU is | |
404 | * modern enough to define socklen_t */ | |
405 | socklen_t addr_len; | |
d858c876 | 406 | BIO_ADDR addr; |
0f113f3e | 407 | # endif |
36d16f8e | 408 | |
0f113f3e MC |
409 | data = (bio_dgram_data *)b->ptr; |
410 | ||
411 | switch (cmd) { | |
412 | case BIO_CTRL_RESET: | |
413 | num = 0; | |
0f113f3e MC |
414 | ret = 0; |
415 | break; | |
0f113f3e MC |
416 | case BIO_CTRL_INFO: |
417 | ret = 0; | |
418 | break; | |
419 | case BIO_C_SET_FD: | |
420 | dgram_clear(b); | |
421 | b->num = *((int *)ptr); | |
422 | b->shutdown = (int)num; | |
423 | b->init = 1; | |
424 | break; | |
425 | case BIO_C_GET_FD: | |
426 | if (b->init) { | |
427 | ip = (int *)ptr; | |
428 | if (ip != NULL) | |
429 | *ip = b->num; | |
430 | ret = b->num; | |
431 | } else | |
432 | ret = -1; | |
433 | break; | |
434 | case BIO_CTRL_GET_CLOSE: | |
435 | ret = b->shutdown; | |
436 | break; | |
437 | case BIO_CTRL_SET_CLOSE: | |
438 | b->shutdown = (int)num; | |
439 | break; | |
440 | case BIO_CTRL_PENDING: | |
441 | case BIO_CTRL_WPENDING: | |
442 | ret = 0; | |
443 | break; | |
444 | case BIO_CTRL_DUP: | |
445 | case BIO_CTRL_FLUSH: | |
446 | ret = 1; | |
447 | break; | |
448 | case BIO_CTRL_DGRAM_CONNECT: | |
d858c876 | 449 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr)); |
0f113f3e MC |
450 | break; |
451 | /* (Linux)kernel sets DF bit on outgoing IP packets */ | |
452 | case BIO_CTRL_DGRAM_MTU_DISCOVER: | |
453 | # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) | |
454 | addr_len = (socklen_t) sizeof(addr); | |
16f8d4eb | 455 | memset(&addr, 0, sizeof(addr)); |
0f113f3e MC |
456 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) { |
457 | ret = 0; | |
458 | break; | |
459 | } | |
460 | switch (addr.sa.sa_family) { | |
461 | case AF_INET: | |
462 | sockopt_val = IP_PMTUDISC_DO; | |
463 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER, | |
464 | &sockopt_val, sizeof(sockopt_val))) < 0) | |
465 | perror("setsockopt"); | |
466 | break; | |
467 | # if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) | |
468 | case AF_INET6: | |
469 | sockopt_val = IPV6_PMTUDISC_DO; | |
470 | if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER, | |
471 | &sockopt_val, sizeof(sockopt_val))) < 0) | |
472 | perror("setsockopt"); | |
473 | break; | |
474 | # endif | |
475 | default: | |
476 | ret = -1; | |
477 | break; | |
478 | } | |
479 | # else | |
480 | ret = -1; | |
481 | # endif | |
482 | break; | |
483 | case BIO_CTRL_DGRAM_QUERY_MTU: | |
484 | # if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU) | |
485 | addr_len = (socklen_t) sizeof(addr); | |
16f8d4eb | 486 | memset(&addr, 0, sizeof(addr)); |
0f113f3e MC |
487 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) { |
488 | ret = 0; | |
489 | break; | |
490 | } | |
491 | sockopt_len = sizeof(sockopt_val); | |
492 | switch (addr.sa.sa_family) { | |
493 | case AF_INET: | |
494 | if ((ret = | |
495 | getsockopt(b->num, IPPROTO_IP, IP_MTU, (void *)&sockopt_val, | |
496 | &sockopt_len)) < 0 || sockopt_val < 0) { | |
497 | ret = 0; | |
498 | } else { | |
499 | /* | |
500 | * we assume that the transport protocol is UDP and no IP | |
501 | * options are used. | |
502 | */ | |
503 | data->mtu = sockopt_val - 8 - 20; | |
504 | ret = data->mtu; | |
505 | } | |
506 | break; | |
507 | # if OPENSSL_USE_IPV6 && defined(IPV6_MTU) | |
508 | case AF_INET6: | |
509 | if ((ret = | |
510 | getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, | |
511 | (void *)&sockopt_val, &sockopt_len)) < 0 | |
512 | || sockopt_val < 0) { | |
513 | ret = 0; | |
514 | } else { | |
515 | /* | |
516 | * we assume that the transport protocol is UDP and no IPV6 | |
517 | * options are used. | |
518 | */ | |
519 | data->mtu = sockopt_val - 8 - 40; | |
520 | ret = data->mtu; | |
521 | } | |
522 | break; | |
523 | # endif | |
524 | default: | |
525 | ret = 0; | |
526 | break; | |
527 | } | |
528 | # else | |
529 | ret = 0; | |
530 | # endif | |
531 | break; | |
532 | case BIO_CTRL_DGRAM_GET_FALLBACK_MTU: | |
533 | ret = -dgram_get_mtu_overhead(data); | |
d858c876 | 534 | switch (BIO_ADDR_family(&data->peer)) { |
0f113f3e MC |
535 | case AF_INET: |
536 | ret += 576; | |
537 | break; | |
538 | # if OPENSSL_USE_IPV6 | |
539 | case AF_INET6: | |
d858c876 | 540 | { |
0f113f3e | 541 | # ifdef IN6_IS_ADDR_V4MAPPED |
d858c876 RL |
542 | struct in6_addr tmp_addr; |
543 | if (BIO_ADDR_rawaddress(&data->peer, &tmp_addr, NULL) | |
544 | && IN6_IS_ADDR_V4MAPPED(&tmp_addr)) | |
545 | ret += 576; | |
546 | else | |
0f113f3e | 547 | # endif |
d858c876 RL |
548 | ret += 1280; |
549 | } | |
0f113f3e MC |
550 | break; |
551 | # endif | |
552 | default: | |
553 | ret += 576; | |
554 | break; | |
555 | } | |
556 | break; | |
557 | case BIO_CTRL_DGRAM_GET_MTU: | |
558 | return data->mtu; | |
0f113f3e MC |
559 | case BIO_CTRL_DGRAM_SET_MTU: |
560 | data->mtu = num; | |
561 | ret = num; | |
562 | break; | |
563 | case BIO_CTRL_DGRAM_SET_CONNECTED: | |
d858c876 | 564 | if (ptr != NULL) { |
0f113f3e | 565 | data->connected = 1; |
d858c876 | 566 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr)); |
0f113f3e MC |
567 | } else { |
568 | data->connected = 0; | |
16f8d4eb | 569 | memset(&data->peer, 0, sizeof(data->peer)); |
0f113f3e MC |
570 | } |
571 | break; | |
572 | case BIO_CTRL_DGRAM_GET_PEER: | |
d858c876 RL |
573 | ret = BIO_ADDR_sockaddr_size(&data->peer); |
574 | /* FIXME: if num < ret, we will only return part of an address. | |
575 | That should bee an error, no? */ | |
0f113f3e MC |
576 | if (num == 0 || num > ret) |
577 | num = ret; | |
578 | memcpy(ptr, &data->peer, (ret = num)); | |
579 | break; | |
580 | case BIO_CTRL_DGRAM_SET_PEER: | |
d858c876 | 581 | BIO_ADDR_make(&data->peer, BIO_ADDR_sockaddr((BIO_ADDR *)ptr)); |
0f113f3e MC |
582 | break; |
583 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT: | |
584 | memcpy(&(data->next_timeout), ptr, sizeof(struct timeval)); | |
585 | break; | |
586 | # if defined(SO_RCVTIMEO) | |
587 | case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT: | |
588 | # ifdef OPENSSL_SYS_WINDOWS | |
589 | { | |
590 | struct timeval *tv = (struct timeval *)ptr; | |
591 | int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000; | |
592 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
593 | (void *)&timeout, sizeof(timeout)) < 0) { | |
594 | perror("setsockopt"); | |
595 | ret = -1; | |
596 | } | |
597 | } | |
598 | # else | |
599 | if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr, | |
600 | sizeof(struct timeval)) < 0) { | |
601 | perror("setsockopt"); | |
602 | ret = -1; | |
603 | } | |
604 | # endif | |
605 | break; | |
606 | case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT: | |
607 | { | |
608 | union { | |
609 | size_t s; | |
610 | int i; | |
611 | } sz = { | |
612 | 0 | |
613 | }; | |
614 | # ifdef OPENSSL_SYS_WINDOWS | |
615 | int timeout; | |
616 | struct timeval *tv = (struct timeval *)ptr; | |
617 | ||
618 | sz.i = sizeof(timeout); | |
619 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
620 | (void *)&timeout, &sz.i) < 0) { | |
621 | perror("getsockopt"); | |
622 | ret = -1; | |
623 | } else { | |
624 | tv->tv_sec = timeout / 1000; | |
625 | tv->tv_usec = (timeout % 1000) * 1000; | |
626 | ret = sizeof(*tv); | |
627 | } | |
628 | # else | |
629 | sz.i = sizeof(struct timeval); | |
630 | if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
631 | ptr, (void *)&sz) < 0) { | |
632 | perror("getsockopt"); | |
633 | ret = -1; | |
634 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) { | |
635 | OPENSSL_assert(sz.s <= sizeof(struct timeval)); | |
636 | ret = (int)sz.s; | |
637 | } else | |
638 | ret = sz.i; | |
639 | # endif | |
640 | } | |
641 | break; | |
642 | # endif | |
643 | # if defined(SO_SNDTIMEO) | |
644 | case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT: | |
645 | # ifdef OPENSSL_SYS_WINDOWS | |
646 | { | |
647 | struct timeval *tv = (struct timeval *)ptr; | |
648 | int timeout = tv->tv_sec * 1000 + tv->tv_usec / 1000; | |
649 | if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
650 | (void *)&timeout, sizeof(timeout)) < 0) { | |
651 | perror("setsockopt"); | |
652 | ret = -1; | |
653 | } | |
654 | } | |
655 | # else | |
656 | if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr, | |
657 | sizeof(struct timeval)) < 0) { | |
658 | perror("setsockopt"); | |
659 | ret = -1; | |
660 | } | |
661 | # endif | |
662 | break; | |
663 | case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT: | |
664 | { | |
665 | union { | |
666 | size_t s; | |
667 | int i; | |
668 | } sz = { | |
669 | 0 | |
670 | }; | |
671 | # ifdef OPENSSL_SYS_WINDOWS | |
672 | int timeout; | |
673 | struct timeval *tv = (struct timeval *)ptr; | |
674 | ||
675 | sz.i = sizeof(timeout); | |
676 | if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
677 | (void *)&timeout, &sz.i) < 0) { | |
678 | perror("getsockopt"); | |
679 | ret = -1; | |
680 | } else { | |
681 | tv->tv_sec = timeout / 1000; | |
682 | tv->tv_usec = (timeout % 1000) * 1000; | |
683 | ret = sizeof(*tv); | |
684 | } | |
685 | # else | |
686 | sz.i = sizeof(struct timeval); | |
687 | if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
688 | ptr, (void *)&sz) < 0) { | |
689 | perror("getsockopt"); | |
690 | ret = -1; | |
691 | } else if (sizeof(sz.s) != sizeof(sz.i) && sz.i == 0) { | |
692 | OPENSSL_assert(sz.s <= sizeof(struct timeval)); | |
693 | ret = (int)sz.s; | |
694 | } else | |
695 | ret = sz.i; | |
696 | # endif | |
697 | } | |
698 | break; | |
699 | # endif | |
700 | case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP: | |
701 | /* fall-through */ | |
702 | case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP: | |
703 | # ifdef OPENSSL_SYS_WINDOWS | |
b5292f7b | 704 | d_errno = (data->_errno == WSAETIMEDOUT); |
0f113f3e | 705 | # else |
b5292f7b | 706 | d_errno = (data->_errno == EAGAIN); |
0f113f3e | 707 | # endif |
b5292f7b | 708 | if (d_errno) { |
0f113f3e MC |
709 | ret = 1; |
710 | data->_errno = 0; | |
711 | } else | |
712 | ret = 0; | |
713 | break; | |
714 | # ifdef EMSGSIZE | |
715 | case BIO_CTRL_DGRAM_MTU_EXCEEDED: | |
716 | if (data->_errno == EMSGSIZE) { | |
717 | ret = 1; | |
718 | data->_errno = 0; | |
719 | } else | |
720 | ret = 0; | |
721 | break; | |
722 | # endif | |
723 | case BIO_CTRL_DGRAM_SET_DONT_FRAG: | |
724 | sockopt_val = num ? 1 : 0; | |
725 | ||
726 | switch (data->peer.sa.sa_family) { | |
727 | case AF_INET: | |
728 | # if defined(IP_DONTFRAG) | |
729 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAG, | |
730 | &sockopt_val, sizeof(sockopt_val))) < 0) { | |
731 | perror("setsockopt"); | |
732 | ret = -1; | |
733 | } | |
133dce44 | 734 | # elif defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined (IP_PMTUDISC_PROBE) |
0f113f3e MC |
735 | if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT), |
736 | (ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVER, | |
737 | &sockopt_val, sizeof(sockopt_val))) < 0) { | |
738 | perror("setsockopt"); | |
739 | ret = -1; | |
740 | } | |
741 | # elif defined(OPENSSL_SYS_WINDOWS) && defined(IP_DONTFRAGMENT) | |
742 | if ((ret = setsockopt(b->num, IPPROTO_IP, IP_DONTFRAGMENT, | |
743 | (const char *)&sockopt_val, | |
744 | sizeof(sockopt_val))) < 0) { | |
745 | perror("setsockopt"); | |
746 | ret = -1; | |
747 | } | |
748 | # else | |
749 | ret = -1; | |
750 | # endif | |
751 | break; | |
752 | # if OPENSSL_USE_IPV6 | |
753 | case AF_INET6: | |
754 | # if defined(IPV6_DONTFRAG) | |
755 | if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_DONTFRAG, | |
756 | (const void *)&sockopt_val, | |
757 | sizeof(sockopt_val))) < 0) { | |
758 | perror("setsockopt"); | |
759 | ret = -1; | |
760 | } | |
761 | # elif defined(OPENSSL_SYS_LINUX) && defined(IPV6_MTUDISCOVER) | |
762 | if ((sockopt_val = num ? IP_PMTUDISC_PROBE : IP_PMTUDISC_DONT), | |
763 | (ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DISCOVER, | |
764 | &sockopt_val, sizeof(sockopt_val))) < 0) { | |
765 | perror("setsockopt"); | |
766 | ret = -1; | |
767 | } | |
768 | # else | |
769 | ret = -1; | |
770 | # endif | |
771 | break; | |
772 | # endif | |
773 | default: | |
774 | ret = -1; | |
775 | break; | |
776 | } | |
777 | break; | |
778 | case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD: | |
779 | ret = dgram_get_mtu_overhead(data); | |
780 | break; | |
99240875 MC |
781 | |
782 | /* | |
783 | * BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE is used here for compatibility | |
784 | * reasons. When BIO_CTRL_DGRAM_SET_PEEK_MODE was first defined its value | |
785 | * was incorrectly clashing with BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE. The | |
786 | * value has been updated to a non-clashing value. However to preserve | |
787 | * binary compatiblity we now respond to both the old value and the new one | |
788 | */ | |
789 | case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE: | |
01b7851a MC |
790 | case BIO_CTRL_DGRAM_SET_PEEK_MODE: |
791 | data->peekmode = (unsigned int)num; | |
792 | break; | |
0f113f3e MC |
793 | default: |
794 | ret = 0; | |
795 | break; | |
796 | } | |
26a7d938 | 797 | return ret; |
0f113f3e | 798 | } |
36d16f8e BL |
799 | |
800 | static int dgram_puts(BIO *bp, const char *str) | |
0f113f3e MC |
801 | { |
802 | int n, ret; | |
36d16f8e | 803 | |
0f113f3e MC |
804 | n = strlen(str); |
805 | ret = dgram_write(bp, str, n); | |
26a7d938 | 806 | return ret; |
0f113f3e | 807 | } |
36d16f8e | 808 | |
0f113f3e | 809 | # ifndef OPENSSL_NO_SCTP |
04f6b0fd | 810 | const BIO_METHOD *BIO_s_datagram_sctp(void) |
0f113f3e | 811 | { |
26a7d938 | 812 | return &methods_dgramp_sctp; |
0f113f3e | 813 | } |
7e159e01 DSH |
814 | |
815 | BIO *BIO_new_dgram_sctp(int fd, int close_flag) | |
0f113f3e MC |
816 | { |
817 | BIO *bio; | |
818 | int ret, optval = 20000; | |
819 | int auth_data = 0, auth_forward = 0; | |
820 | unsigned char *p; | |
821 | struct sctp_authchunk auth; | |
822 | struct sctp_authchunks *authchunks; | |
823 | socklen_t sockopt_len; | |
824 | # ifdef SCTP_AUTHENTICATION_EVENT | |
825 | # ifdef SCTP_EVENT | |
826 | struct sctp_event event; | |
827 | # else | |
828 | struct sctp_event_subscribe event; | |
829 | # endif | |
830 | # endif | |
7e159e01 | 831 | |
0f113f3e MC |
832 | bio = BIO_new(BIO_s_datagram_sctp()); |
833 | if (bio == NULL) | |
26a7d938 | 834 | return NULL; |
0f113f3e MC |
835 | BIO_set_fd(bio, fd, close_flag); |
836 | ||
837 | /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */ | |
838 | auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE; | |
839 | ret = | |
840 | setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, | |
841 | sizeof(struct sctp_authchunk)); | |
842 | if (ret < 0) { | |
843 | BIO_vfree(bio); | |
dcf88c5b MC |
844 | BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB); |
845 | ERR_add_error_data(1, "Ensure SCTP AUTH chunks are enabled in kernel"); | |
26a7d938 | 846 | return NULL; |
0f113f3e MC |
847 | } |
848 | auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE; | |
849 | ret = | |
850 | setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, | |
851 | sizeof(struct sctp_authchunk)); | |
852 | if (ret < 0) { | |
853 | BIO_vfree(bio); | |
dcf88c5b MC |
854 | BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB); |
855 | ERR_add_error_data(1, "Ensure SCTP AUTH chunks are enabled in kernel"); | |
26a7d938 | 856 | return NULL; |
0f113f3e MC |
857 | } |
858 | ||
859 | /* | |
860 | * Test if activation was successful. When using accept(), SCTP-AUTH has | |
861 | * to be activated for the listening socket already, otherwise the | |
dcf88c5b MC |
862 | * connected socket won't use it. Similarly with connect(): the socket |
863 | * prior to connection must be activated for SCTP-AUTH | |
0f113f3e MC |
864 | */ |
865 | sockopt_len = (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t)); | |
b51bce94 | 866 | authchunks = OPENSSL_zalloc(sockopt_len); |
90945fa3 | 867 | if (authchunks == NULL) { |
918bb865 | 868 | BIO_vfree(bio); |
26a7d938 | 869 | return NULL; |
918bb865 | 870 | } |
b51bce94 | 871 | ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks, |
0f113f3e | 872 | &sockopt_len); |
0f113f3e MC |
873 | if (ret < 0) { |
874 | OPENSSL_free(authchunks); | |
875 | BIO_vfree(bio); | |
26a7d938 | 876 | return NULL; |
0f113f3e MC |
877 | } |
878 | ||
879 | for (p = (unsigned char *)authchunks->gauth_chunks; | |
880 | p < (unsigned char *)authchunks + sockopt_len; | |
881 | p += sizeof(uint8_t)) { | |
882 | if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) | |
883 | auth_data = 1; | |
884 | if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) | |
885 | auth_forward = 1; | |
886 | } | |
887 | ||
888 | OPENSSL_free(authchunks); | |
889 | ||
dcf88c5b MC |
890 | if (!auth_data || !auth_forward) { |
891 | BIO_vfree(bio); | |
892 | BIOerr(BIO_F_BIO_NEW_DGRAM_SCTP, ERR_R_SYS_LIB); | |
893 | ERR_add_error_data(1, | |
894 | "Ensure SCTP AUTH chunks are enabled on the " | |
895 | "underlying socket"); | |
896 | return NULL; | |
897 | } | |
0f113f3e MC |
898 | |
899 | # ifdef SCTP_AUTHENTICATION_EVENT | |
900 | # ifdef SCTP_EVENT | |
16f8d4eb | 901 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
902 | event.se_assoc_id = 0; |
903 | event.se_type = SCTP_AUTHENTICATION_EVENT; | |
904 | event.se_on = 1; | |
905 | ret = | |
906 | setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event, | |
907 | sizeof(struct sctp_event)); | |
908 | if (ret < 0) { | |
909 | BIO_vfree(bio); | |
26a7d938 | 910 | return NULL; |
0f113f3e MC |
911 | } |
912 | # else | |
913 | sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe); | |
914 | ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len); | |
915 | if (ret < 0) { | |
916 | BIO_vfree(bio); | |
26a7d938 | 917 | return NULL; |
0f113f3e MC |
918 | } |
919 | ||
920 | event.sctp_authentication_event = 1; | |
921 | ||
922 | ret = | |
923 | setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
924 | sizeof(struct sctp_event_subscribe)); | |
925 | if (ret < 0) { | |
926 | BIO_vfree(bio); | |
26a7d938 | 927 | return NULL; |
0f113f3e MC |
928 | } |
929 | # endif | |
930 | # endif | |
7e159e01 | 931 | |
0f113f3e MC |
932 | /* |
933 | * Disable partial delivery by setting the min size larger than the max | |
934 | * record size of 2^14 + 2048 + 13 | |
935 | */ | |
936 | ret = | |
937 | setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval, | |
938 | sizeof(optval)); | |
939 | if (ret < 0) { | |
940 | BIO_vfree(bio); | |
26a7d938 | 941 | return NULL; |
0f113f3e MC |
942 | } |
943 | ||
26a7d938 | 944 | return bio; |
0f113f3e | 945 | } |
7e159e01 DSH |
946 | |
947 | int BIO_dgram_is_sctp(BIO *bio) | |
0f113f3e MC |
948 | { |
949 | return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP); | |
950 | } | |
7e159e01 DSH |
951 | |
952 | static int dgram_sctp_new(BIO *bi) | |
0f113f3e MC |
953 | { |
954 | bio_dgram_sctp_data *data = NULL; | |
955 | ||
956 | bi->init = 0; | |
957 | bi->num = 0; | |
cdb10bae RS |
958 | if ((data = OPENSSL_zalloc(sizeof(*data))) == NULL) { |
959 | BIOerr(BIO_F_DGRAM_SCTP_NEW, ERR_R_MALLOC_FAILURE); | |
0f113f3e | 960 | return 0; |
cdb10bae | 961 | } |
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 | 967 | bi->flags = 0; |
208fb891 | 968 | return 1; |
0f113f3e | 969 | } |
7e159e01 DSH |
970 | |
971 | static int dgram_sctp_free(BIO *a) | |
0f113f3e MC |
972 | { |
973 | bio_dgram_sctp_data *data; | |
7e159e01 | 974 | |
0f113f3e | 975 | if (a == NULL) |
26a7d938 | 976 | return 0; |
0f113f3e MC |
977 | if (!dgram_clear(a)) |
978 | return 0; | |
7e159e01 | 979 | |
0f113f3e | 980 | data = (bio_dgram_sctp_data *) a->ptr; |
41b3c9ce | 981 | if (data != NULL) |
0f113f3e | 982 | OPENSSL_free(data); |
0f113f3e | 983 | |
208fb891 | 984 | return 1; |
0f113f3e | 985 | } |
7e159e01 | 986 | |
0f113f3e MC |
987 | # ifdef SCTP_AUTHENTICATION_EVENT |
988 | void dgram_sctp_handle_auth_free_key_event(BIO *b, | |
989 | union sctp_notification *snp) | |
990 | { | |
991 | int ret; | |
992 | struct sctp_authkey_event *authkeyevent = &snp->sn_auth_event; | |
993 | ||
994 | if (authkeyevent->auth_indication == SCTP_AUTH_FREE_KEY) { | |
995 | struct sctp_authkeyid authkeyid; | |
996 | ||
997 | /* delete key */ | |
998 | authkeyid.scact_keynumber = authkeyevent->auth_keynumber; | |
999 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY, | |
1000 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1001 | } | |
1002 | } | |
1003 | # endif | |
1004 | ||
1005 | static int dgram_sctp_read(BIO *b, char *out, int outl) | |
1006 | { | |
1007 | int ret = 0, n = 0, i, optval; | |
1008 | socklen_t optlen; | |
1009 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1010 | union sctp_notification *snp; | |
1011 | struct msghdr msg; | |
1012 | struct iovec iov; | |
1013 | struct cmsghdr *cmsg; | |
1014 | char cmsgbuf[512]; | |
1015 | ||
1016 | if (out != NULL) { | |
1017 | clear_socket_error(); | |
1018 | ||
1019 | do { | |
16f8d4eb | 1020 | memset(&data->rcvinfo, 0, sizeof(data->rcvinfo)); |
0f113f3e MC |
1021 | iov.iov_base = out; |
1022 | iov.iov_len = outl; | |
1023 | msg.msg_name = NULL; | |
1024 | msg.msg_namelen = 0; | |
1025 | msg.msg_iov = &iov; | |
1026 | msg.msg_iovlen = 1; | |
1027 | msg.msg_control = cmsgbuf; | |
1028 | msg.msg_controllen = 512; | |
1029 | msg.msg_flags = 0; | |
1030 | n = recvmsg(b->num, &msg, 0); | |
1031 | ||
1032 | if (n <= 0) { | |
1033 | if (n < 0) | |
1034 | ret = n; | |
1035 | break; | |
1036 | } | |
1037 | ||
1038 | if (msg.msg_controllen > 0) { | |
1039 | for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; | |
1040 | cmsg = CMSG_NXTHDR(&msg, cmsg)) { | |
1041 | if (cmsg->cmsg_level != IPPROTO_SCTP) | |
1042 | continue; | |
1043 | # ifdef SCTP_RCVINFO | |
1044 | if (cmsg->cmsg_type == SCTP_RCVINFO) { | |
1045 | struct sctp_rcvinfo *rcvinfo; | |
1046 | ||
1047 | rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg); | |
1048 | data->rcvinfo.rcv_sid = rcvinfo->rcv_sid; | |
1049 | data->rcvinfo.rcv_ssn = rcvinfo->rcv_ssn; | |
1050 | data->rcvinfo.rcv_flags = rcvinfo->rcv_flags; | |
1051 | data->rcvinfo.rcv_ppid = rcvinfo->rcv_ppid; | |
1052 | data->rcvinfo.rcv_tsn = rcvinfo->rcv_tsn; | |
1053 | data->rcvinfo.rcv_cumtsn = rcvinfo->rcv_cumtsn; | |
1054 | data->rcvinfo.rcv_context = rcvinfo->rcv_context; | |
1055 | } | |
1056 | # endif | |
1057 | # ifdef SCTP_SNDRCV | |
1058 | if (cmsg->cmsg_type == SCTP_SNDRCV) { | |
1059 | struct sctp_sndrcvinfo *sndrcvinfo; | |
1060 | ||
1061 | sndrcvinfo = | |
1062 | (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); | |
1063 | data->rcvinfo.rcv_sid = sndrcvinfo->sinfo_stream; | |
1064 | data->rcvinfo.rcv_ssn = sndrcvinfo->sinfo_ssn; | |
1065 | data->rcvinfo.rcv_flags = sndrcvinfo->sinfo_flags; | |
1066 | data->rcvinfo.rcv_ppid = sndrcvinfo->sinfo_ppid; | |
1067 | data->rcvinfo.rcv_tsn = sndrcvinfo->sinfo_tsn; | |
1068 | data->rcvinfo.rcv_cumtsn = sndrcvinfo->sinfo_cumtsn; | |
1069 | data->rcvinfo.rcv_context = sndrcvinfo->sinfo_context; | |
1070 | } | |
1071 | # endif | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | if (msg.msg_flags & MSG_NOTIFICATION) { | |
1076 | snp = (union sctp_notification *)out; | |
1077 | if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EVENT) { | |
1078 | # ifdef SCTP_EVENT | |
1079 | struct sctp_event event; | |
1080 | # else | |
1081 | struct sctp_event_subscribe event; | |
1082 | socklen_t eventsize; | |
1083 | # endif | |
0f113f3e MC |
1084 | |
1085 | /* disable sender dry event */ | |
1086 | # ifdef SCTP_EVENT | |
16f8d4eb | 1087 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
1088 | event.se_assoc_id = 0; |
1089 | event.se_type = SCTP_SENDER_DRY_EVENT; | |
1090 | event.se_on = 0; | |
1091 | i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, | |
1092 | sizeof(struct sctp_event)); | |
1093 | if (i < 0) { | |
1094 | ret = i; | |
1095 | break; | |
1096 | } | |
1097 | # else | |
1098 | eventsize = sizeof(struct sctp_event_subscribe); | |
1099 | i = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1100 | &eventsize); | |
1101 | if (i < 0) { | |
1102 | ret = i; | |
1103 | break; | |
1104 | } | |
1105 | ||
1106 | event.sctp_sender_dry_event = 0; | |
1107 | ||
1108 | i = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1109 | sizeof(struct sctp_event_subscribe)); | |
1110 | if (i < 0) { | |
1111 | ret = i; | |
1112 | break; | |
1113 | } | |
1114 | # endif | |
1115 | } | |
1116 | # ifdef SCTP_AUTHENTICATION_EVENT | |
1117 | if (snp->sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
1118 | dgram_sctp_handle_auth_free_key_event(b, snp); | |
1119 | # endif | |
1120 | ||
1121 | if (data->handle_notifications != NULL) | |
1122 | data->handle_notifications(b, data->notification_context, | |
1123 | (void *)out); | |
1124 | ||
1125 | memset(out, 0, outl); | |
1126 | } else | |
1127 | ret += n; | |
1128 | } | |
1129 | while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MSG_EOR) | |
1130 | && (ret < outl)); | |
1131 | ||
1132 | if (ret > 0 && !(msg.msg_flags & MSG_EOR)) { | |
1133 | /* Partial message read, this should never happen! */ | |
1134 | ||
1135 | /* | |
1136 | * The buffer was too small, this means the peer sent a message | |
1137 | * that was larger than allowed. | |
1138 | */ | |
1139 | if (ret == outl) | |
1140 | return -1; | |
1141 | ||
1142 | /* | |
1143 | * Test if socket buffer can handle max record size (2^14 + 2048 | |
1144 | * + 13) | |
1145 | */ | |
1146 | optlen = (socklen_t) sizeof(int); | |
1147 | ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval, &optlen); | |
1148 | if (ret >= 0) | |
1149 | OPENSSL_assert(optval >= 18445); | |
1150 | ||
1151 | /* | |
1152 | * Test if SCTP doesn't partially deliver below max record size | |
1153 | * (2^14 + 2048 + 13) | |
1154 | */ | |
1155 | optlen = (socklen_t) sizeof(int); | |
1156 | ret = | |
1157 | getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, | |
1158 | &optval, &optlen); | |
1159 | if (ret >= 0) | |
1160 | OPENSSL_assert(optval >= 18445); | |
1161 | ||
1162 | /* | |
1163 | * Partially delivered notification??? Probably a bug.... | |
1164 | */ | |
1165 | OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION)); | |
1166 | ||
1167 | /* | |
1168 | * Everything seems ok till now, so it's most likely a message | |
1169 | * dropped by PR-SCTP. | |
1170 | */ | |
1171 | memset(out, 0, outl); | |
1172 | BIO_set_retry_read(b); | |
1173 | return -1; | |
1174 | } | |
1175 | ||
1176 | BIO_clear_retry_flags(b); | |
1177 | if (ret < 0) { | |
1178 | if (BIO_dgram_should_retry(ret)) { | |
1179 | BIO_set_retry_read(b); | |
1180 | data->_errno = get_last_socket_error(); | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | /* Test if peer uses SCTP-AUTH before continuing */ | |
1185 | if (!data->peer_auth_tested) { | |
1186 | int ii, auth_data = 0, auth_forward = 0; | |
1187 | unsigned char *p; | |
1188 | struct sctp_authchunks *authchunks; | |
1189 | ||
1190 | optlen = | |
1191 | (socklen_t) (sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t)); | |
1192 | authchunks = OPENSSL_malloc(optlen); | |
90945fa3 | 1193 | if (authchunks == NULL) { |
7c82e339 | 1194 | BIOerr(BIO_F_DGRAM_SCTP_READ, ERR_R_MALLOC_FAILURE); |
918bb865 MC |
1195 | return -1; |
1196 | } | |
0f113f3e MC |
1197 | memset(authchunks, 0, optlen); |
1198 | ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHUNKS, | |
1199 | authchunks, &optlen); | |
1200 | ||
1201 | if (ii >= 0) | |
1202 | for (p = (unsigned char *)authchunks->gauth_chunks; | |
1203 | p < (unsigned char *)authchunks + optlen; | |
1204 | p += sizeof(uint8_t)) { | |
1205 | if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) | |
1206 | auth_data = 1; | |
1207 | if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) | |
1208 | auth_forward = 1; | |
1209 | } | |
1210 | ||
1211 | OPENSSL_free(authchunks); | |
1212 | ||
1213 | if (!auth_data || !auth_forward) { | |
1214 | BIOerr(BIO_F_DGRAM_SCTP_READ, BIO_R_CONNECT_ERROR); | |
1215 | return -1; | |
1216 | } | |
1217 | ||
1218 | data->peer_auth_tested = 1; | |
1219 | } | |
1220 | } | |
26a7d938 | 1221 | return ret; |
0f113f3e | 1222 | } |
7e159e01 | 1223 | |
7f098cb4 KR |
1224 | /* |
1225 | * dgram_sctp_write - send message on SCTP socket | |
1226 | * @b: BIO to write to | |
1227 | * @in: data to send | |
1228 | * @inl: amount of bytes in @in to send | |
1229 | * | |
1230 | * Returns -1 on error or the sent amount of bytes on success | |
1231 | */ | |
7e159e01 | 1232 | static int dgram_sctp_write(BIO *b, const char *in, int inl) |
0f113f3e MC |
1233 | { |
1234 | int ret; | |
1235 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1236 | struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo); | |
1237 | struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo); | |
1238 | struct bio_dgram_sctp_sndinfo handshake_sinfo; | |
1239 | struct iovec iov[1]; | |
1240 | struct msghdr msg; | |
1241 | struct cmsghdr *cmsg; | |
1242 | # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO) | |
1243 | char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) + | |
1244 | CMSG_SPACE(sizeof(struct sctp_prinfo))]; | |
1245 | struct sctp_sndinfo *sndinfo; | |
1246 | struct sctp_prinfo *prinfo; | |
1247 | # else | |
1248 | char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; | |
1249 | struct sctp_sndrcvinfo *sndrcvinfo; | |
1250 | # endif | |
7e159e01 | 1251 | |
0f113f3e | 1252 | clear_socket_error(); |
7e159e01 | 1253 | |
0f113f3e MC |
1254 | /* |
1255 | * If we're send anything else than application data, disable all user | |
1256 | * parameters and flags. | |
1257 | */ | |
1258 | if (in[0] != 23) { | |
16f8d4eb | 1259 | memset(&handshake_sinfo, 0, sizeof(handshake_sinfo)); |
0f113f3e MC |
1260 | # ifdef SCTP_SACK_IMMEDIATELY |
1261 | handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY; | |
1262 | # endif | |
1263 | sinfo = &handshake_sinfo; | |
1264 | } | |
1265 | ||
41b3c9ce | 1266 | /* We can only send a shutdown alert if the socket is dry */ |
03a1c850 KR |
1267 | if (data->save_shutdown) { |
1268 | ret = BIO_dgram_sctp_wait_for_dry(b); | |
41b3c9ce | 1269 | if (ret < 0) |
918bb865 | 1270 | return -1; |
03a1c850 | 1271 | if (ret == 0) { |
41b3c9ce MC |
1272 | BIO_clear_retry_flags(b); |
1273 | BIO_set_retry_write(b); | |
1274 | return -1; | |
03a1c850 | 1275 | } |
0f113f3e MC |
1276 | } |
1277 | ||
1278 | iov[0].iov_base = (char *)in; | |
1279 | iov[0].iov_len = inl; | |
1280 | msg.msg_name = NULL; | |
1281 | msg.msg_namelen = 0; | |
1282 | msg.msg_iov = iov; | |
1283 | msg.msg_iovlen = 1; | |
1284 | msg.msg_control = (caddr_t) cmsgbuf; | |
1285 | msg.msg_controllen = 0; | |
1286 | msg.msg_flags = 0; | |
1287 | # if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO) | |
1288 | cmsg = (struct cmsghdr *)cmsgbuf; | |
1289 | cmsg->cmsg_level = IPPROTO_SCTP; | |
1290 | cmsg->cmsg_type = SCTP_SNDINFO; | |
1291 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); | |
1292 | sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg); | |
16f8d4eb | 1293 | memset(sndinfo, 0, sizeof(*sndinfo)); |
0f113f3e MC |
1294 | sndinfo->snd_sid = sinfo->snd_sid; |
1295 | sndinfo->snd_flags = sinfo->snd_flags; | |
1296 | sndinfo->snd_ppid = sinfo->snd_ppid; | |
1297 | sndinfo->snd_context = sinfo->snd_context; | |
1298 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); | |
1299 | ||
1300 | cmsg = | |
1301 | (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo))]; | |
1302 | cmsg->cmsg_level = IPPROTO_SCTP; | |
1303 | cmsg->cmsg_type = SCTP_PRINFO; | |
1304 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); | |
1305 | prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg); | |
16f8d4eb | 1306 | memset(prinfo, 0, sizeof(*prinfo)); |
0f113f3e MC |
1307 | prinfo->pr_policy = pinfo->pr_policy; |
1308 | prinfo->pr_value = pinfo->pr_value; | |
1309 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); | |
1310 | # else | |
1311 | cmsg = (struct cmsghdr *)cmsgbuf; | |
1312 | cmsg->cmsg_level = IPPROTO_SCTP; | |
1313 | cmsg->cmsg_type = SCTP_SNDRCV; | |
1314 | cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); | |
1315 | sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); | |
16f8d4eb | 1316 | memset(sndrcvinfo, 0, sizeof(*sndrcvinfo)); |
0f113f3e MC |
1317 | sndrcvinfo->sinfo_stream = sinfo->snd_sid; |
1318 | sndrcvinfo->sinfo_flags = sinfo->snd_flags; | |
1319 | # ifdef __FreeBSD__ | |
1320 | sndrcvinfo->sinfo_flags |= pinfo->pr_policy; | |
1321 | # endif | |
1322 | sndrcvinfo->sinfo_ppid = sinfo->snd_ppid; | |
1323 | sndrcvinfo->sinfo_context = sinfo->snd_context; | |
1324 | sndrcvinfo->sinfo_timetolive = pinfo->pr_value; | |
1325 | msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo)); | |
1326 | # endif | |
7e159e01 | 1327 | |
0f113f3e | 1328 | ret = sendmsg(b->num, &msg, 0); |
7e159e01 | 1329 | |
0f113f3e MC |
1330 | BIO_clear_retry_flags(b); |
1331 | if (ret <= 0) { | |
1332 | if (BIO_dgram_should_retry(ret)) { | |
1333 | BIO_set_retry_write(b); | |
1334 | data->_errno = get_last_socket_error(); | |
1335 | } | |
1336 | } | |
26a7d938 | 1337 | return ret; |
0f113f3e | 1338 | } |
7e159e01 DSH |
1339 | |
1340 | static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr) | |
0f113f3e MC |
1341 | { |
1342 | long ret = 1; | |
1343 | bio_dgram_sctp_data *data = NULL; | |
1344 | socklen_t sockopt_len = 0; | |
1345 | struct sctp_authkeyid authkeyid; | |
1346 | struct sctp_authkey *authkey = NULL; | |
1347 | ||
1348 | data = (bio_dgram_sctp_data *) b->ptr; | |
1349 | ||
1350 | switch (cmd) { | |
1351 | case BIO_CTRL_DGRAM_QUERY_MTU: | |
1352 | /* | |
1353 | * Set to maximum (2^14) and ignore user input to enable transport | |
1354 | * protocol fragmentation. Returns always 2^14. | |
1355 | */ | |
1356 | data->mtu = 16384; | |
1357 | ret = data->mtu; | |
1358 | break; | |
1359 | case BIO_CTRL_DGRAM_SET_MTU: | |
1360 | /* | |
1361 | * Set to maximum (2^14) and ignore input to enable transport | |
1362 | * protocol fragmentation. Returns always 2^14. | |
1363 | */ | |
1364 | data->mtu = 16384; | |
1365 | ret = data->mtu; | |
1366 | break; | |
1367 | case BIO_CTRL_DGRAM_SET_CONNECTED: | |
1368 | case BIO_CTRL_DGRAM_CONNECT: | |
1369 | /* Returns always -1. */ | |
1370 | ret = -1; | |
1371 | break; | |
1372 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT: | |
1373 | /* | |
1374 | * SCTP doesn't need the DTLS timer Returns always 1. | |
1375 | */ | |
1376 | break; | |
1377 | case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD: | |
1378 | /* | |
1379 | * We allow transport protocol fragmentation so this is irrelevant | |
1380 | */ | |
1381 | ret = 0; | |
1382 | break; | |
1383 | case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE: | |
1384 | if (num > 0) | |
1385 | data->in_handshake = 1; | |
1386 | else | |
1387 | data->in_handshake = 0; | |
1388 | ||
1389 | ret = | |
1390 | setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY, | |
1391 | &data->in_handshake, sizeof(int)); | |
1392 | break; | |
1393 | case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY: | |
1394 | /* | |
1395 | * New shared key for SCTP AUTH. Returns 0 on success, -1 otherwise. | |
1396 | */ | |
1397 | ||
1398 | /* Get active key */ | |
1399 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1400 | ret = | |
1401 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, | |
1402 | &sockopt_len); | |
1403 | if (ret < 0) | |
1404 | break; | |
1405 | ||
1406 | /* Add new key */ | |
1407 | sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t); | |
1408 | authkey = OPENSSL_malloc(sockopt_len); | |
1409 | if (authkey == NULL) { | |
1410 | ret = -1; | |
1411 | break; | |
1412 | } | |
16f8d4eb | 1413 | memset(authkey, 0, sockopt_len); |
0f113f3e MC |
1414 | authkey->sca_keynumber = authkeyid.scact_keynumber + 1; |
1415 | # ifndef __FreeBSD__ | |
1416 | /* | |
1417 | * This field is missing in FreeBSD 8.2 and earlier, and FreeBSD 8.3 | |
1418 | * and higher work without it. | |
1419 | */ | |
1420 | authkey->sca_keylength = 64; | |
1421 | # endif | |
1422 | memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t)); | |
1423 | ||
1424 | ret = | |
1425 | setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey, | |
1426 | sockopt_len); | |
1427 | OPENSSL_free(authkey); | |
1428 | authkey = NULL; | |
1429 | if (ret < 0) | |
1430 | break; | |
1431 | ||
1432 | /* Reset active key */ | |
1433 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
1434 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1435 | if (ret < 0) | |
1436 | break; | |
1437 | ||
1438 | break; | |
1439 | case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY: | |
1440 | /* Returns 0 on success, -1 otherwise. */ | |
1441 | ||
1442 | /* Get active key */ | |
1443 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1444 | ret = | |
1445 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &authkeyid, | |
1446 | &sockopt_len); | |
1447 | if (ret < 0) | |
1448 | break; | |
1449 | ||
1450 | /* Set active key */ | |
1451 | authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1; | |
1452 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
1453 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1454 | if (ret < 0) | |
1455 | break; | |
1456 | ||
1457 | /* | |
1458 | * CCS has been sent, so remember that and fall through to check if | |
1459 | * we need to deactivate an old key | |
1460 | */ | |
1461 | data->ccs_sent = 1; | |
14716754 | 1462 | /* fall-through */ |
0f113f3e MC |
1463 | |
1464 | case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD: | |
1465 | /* Returns 0 on success, -1 otherwise. */ | |
1466 | ||
1467 | /* | |
1468 | * Has this command really been called or is this just a | |
1469 | * fall-through? | |
1470 | */ | |
1471 | if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD) | |
1472 | data->ccs_rcvd = 1; | |
1473 | ||
1474 | /* | |
1475 | * CSS has been both, received and sent, so deactivate an old key | |
1476 | */ | |
1477 | if (data->ccs_rcvd == 1 && data->ccs_sent == 1) { | |
1478 | /* Get active key */ | |
1479 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1480 | ret = | |
1481 | getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
1482 | &authkeyid, &sockopt_len); | |
1483 | if (ret < 0) | |
1484 | break; | |
1485 | ||
1486 | /* | |
1487 | * Deactivate key or delete second last key if | |
1488 | * SCTP_AUTHENTICATION_EVENT is not available. | |
1489 | */ | |
1490 | authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1; | |
1491 | # ifdef SCTP_AUTH_DEACTIVATE_KEY | |
1492 | sockopt_len = sizeof(struct sctp_authkeyid); | |
1493 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIVATE_KEY, | |
1494 | &authkeyid, sockopt_len); | |
1495 | if (ret < 0) | |
1496 | break; | |
1497 | # endif | |
1498 | # ifndef SCTP_AUTHENTICATION_EVENT | |
1499 | if (authkeyid.scact_keynumber > 0) { | |
1500 | authkeyid.scact_keynumber = authkeyid.scact_keynumber - 1; | |
1501 | ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY, | |
1502 | &authkeyid, sizeof(struct sctp_authkeyid)); | |
1503 | if (ret < 0) | |
1504 | break; | |
1505 | } | |
1506 | # endif | |
7e159e01 | 1507 | |
0f113f3e MC |
1508 | data->ccs_rcvd = 0; |
1509 | data->ccs_sent = 0; | |
1510 | } | |
1511 | break; | |
1512 | case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO: | |
1513 | /* Returns the size of the copied struct. */ | |
1514 | if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo)) | |
1515 | num = sizeof(struct bio_dgram_sctp_sndinfo); | |
1516 | ||
1517 | memcpy(ptr, &(data->sndinfo), num); | |
1518 | ret = num; | |
1519 | break; | |
1520 | case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO: | |
1521 | /* Returns the size of the copied struct. */ | |
1522 | if (num > (long)sizeof(struct bio_dgram_sctp_sndinfo)) | |
1523 | num = sizeof(struct bio_dgram_sctp_sndinfo); | |
1524 | ||
1525 | memcpy(&(data->sndinfo), ptr, num); | |
1526 | break; | |
1527 | case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO: | |
1528 | /* Returns the size of the copied struct. */ | |
1529 | if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo)) | |
1530 | num = sizeof(struct bio_dgram_sctp_rcvinfo); | |
1531 | ||
1532 | memcpy(ptr, &data->rcvinfo, num); | |
1533 | ||
1534 | ret = num; | |
1535 | break; | |
1536 | case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO: | |
1537 | /* Returns the size of the copied struct. */ | |
1538 | if (num > (long)sizeof(struct bio_dgram_sctp_rcvinfo)) | |
1539 | num = sizeof(struct bio_dgram_sctp_rcvinfo); | |
1540 | ||
1541 | memcpy(&(data->rcvinfo), ptr, num); | |
1542 | break; | |
1543 | case BIO_CTRL_DGRAM_SCTP_GET_PRINFO: | |
1544 | /* Returns the size of the copied struct. */ | |
1545 | if (num > (long)sizeof(struct bio_dgram_sctp_prinfo)) | |
1546 | num = sizeof(struct bio_dgram_sctp_prinfo); | |
1547 | ||
1548 | memcpy(ptr, &(data->prinfo), num); | |
1549 | ret = num; | |
1550 | break; | |
1551 | case BIO_CTRL_DGRAM_SCTP_SET_PRINFO: | |
1552 | /* Returns the size of the copied struct. */ | |
1553 | if (num > (long)sizeof(struct bio_dgram_sctp_prinfo)) | |
1554 | num = sizeof(struct bio_dgram_sctp_prinfo); | |
1555 | ||
1556 | memcpy(&(data->prinfo), ptr, num); | |
1557 | break; | |
1558 | case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN: | |
1559 | /* Returns always 1. */ | |
1560 | if (num > 0) | |
1561 | data->save_shutdown = 1; | |
1562 | else | |
1563 | data->save_shutdown = 0; | |
1564 | break; | |
1565 | ||
1566 | default: | |
1567 | /* | |
1568 | * Pass to default ctrl function to process SCTP unspecific commands | |
1569 | */ | |
1570 | ret = dgram_ctrl(b, cmd, num, ptr); | |
1571 | break; | |
1572 | } | |
26a7d938 | 1573 | return ret; |
0f113f3e | 1574 | } |
7e159e01 DSH |
1575 | |
1576 | int BIO_dgram_sctp_notification_cb(BIO *b, | |
0f113f3e MC |
1577 | void (*handle_notifications) (BIO *bio, |
1578 | void | |
1579 | *context, | |
1580 | void *buf), | |
7e159e01 | 1581 | void *context) |
0f113f3e MC |
1582 | { |
1583 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
7e159e01 | 1584 | |
0f113f3e MC |
1585 | if (handle_notifications != NULL) { |
1586 | data->handle_notifications = handle_notifications; | |
1587 | data->notification_context = context; | |
1588 | } else | |
1589 | return -1; | |
7e159e01 | 1590 | |
0f113f3e MC |
1591 | return 0; |
1592 | } | |
7e159e01 | 1593 | |
03a1c850 KR |
1594 | /* |
1595 | * BIO_dgram_sctp_wait_for_dry - Wait for SCTP SENDER_DRY event | |
1596 | * @b: The BIO to check for the dry event | |
1597 | * | |
1598 | * Wait until the peer confirms all packets have been received, and so that | |
1599 | * our kernel doesn't have anything to send anymore. This is only received by | |
1600 | * the peer's kernel, not the application. | |
1601 | * | |
1602 | * Returns: | |
1603 | * -1 on error | |
1604 | * 0 when not dry yet | |
1605 | * 1 when dry | |
1606 | */ | |
7e159e01 DSH |
1607 | int BIO_dgram_sctp_wait_for_dry(BIO *b) |
1608 | { | |
0f113f3e | 1609 | int is_dry = 0; |
4eacfade BL |
1610 | int sockflags = 0; |
1611 | int n, ret; | |
0f113f3e MC |
1612 | union sctp_notification snp; |
1613 | struct msghdr msg; | |
1614 | struct iovec iov; | |
1615 | # ifdef SCTP_EVENT | |
1616 | struct sctp_event event; | |
1617 | # else | |
1618 | struct sctp_event_subscribe event; | |
1619 | socklen_t eventsize; | |
1620 | # endif | |
1621 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1622 | ||
1623 | /* set sender dry event */ | |
1624 | # ifdef SCTP_EVENT | |
16f8d4eb | 1625 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
1626 | event.se_assoc_id = 0; |
1627 | event.se_type = SCTP_SENDER_DRY_EVENT; | |
1628 | event.se_on = 1; | |
1629 | ret = | |
1630 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, | |
1631 | sizeof(struct sctp_event)); | |
1632 | # else | |
1633 | eventsize = sizeof(struct sctp_event_subscribe); | |
1634 | ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize); | |
1635 | if (ret < 0) | |
1636 | return -1; | |
1637 | ||
1638 | event.sctp_sender_dry_event = 1; | |
1639 | ||
1640 | ret = | |
1641 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1642 | sizeof(struct sctp_event_subscribe)); | |
1643 | # endif | |
1644 | if (ret < 0) | |
1645 | return -1; | |
1646 | ||
1647 | /* peek for notification */ | |
16f8d4eb | 1648 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1649 | iov.iov_base = (char *)&snp; |
1650 | iov.iov_len = sizeof(union sctp_notification); | |
1651 | msg.msg_name = NULL; | |
1652 | msg.msg_namelen = 0; | |
1653 | msg.msg_iov = &iov; | |
1654 | msg.msg_iovlen = 1; | |
1655 | msg.msg_control = NULL; | |
1656 | msg.msg_controllen = 0; | |
1657 | msg.msg_flags = 0; | |
1658 | ||
1659 | n = recvmsg(b->num, &msg, MSG_PEEK); | |
1660 | if (n <= 0) { | |
1661 | if ((n < 0) && (get_last_socket_error() != EAGAIN) | |
1662 | && (get_last_socket_error() != EWOULDBLOCK)) | |
1663 | return -1; | |
1664 | else | |
1665 | return 0; | |
1666 | } | |
1667 | ||
1668 | /* if we find a notification, process it and try again if necessary */ | |
1669 | while (msg.msg_flags & MSG_NOTIFICATION) { | |
16f8d4eb | 1670 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1671 | iov.iov_base = (char *)&snp; |
1672 | iov.iov_len = sizeof(union sctp_notification); | |
1673 | msg.msg_name = NULL; | |
1674 | msg.msg_namelen = 0; | |
1675 | msg.msg_iov = &iov; | |
1676 | msg.msg_iovlen = 1; | |
1677 | msg.msg_control = NULL; | |
1678 | msg.msg_controllen = 0; | |
1679 | msg.msg_flags = 0; | |
1680 | ||
1681 | n = recvmsg(b->num, &msg, 0); | |
1682 | if (n <= 0) { | |
1683 | if ((n < 0) && (get_last_socket_error() != EAGAIN) | |
1684 | && (get_last_socket_error() != EWOULDBLOCK)) | |
1685 | return -1; | |
1686 | else | |
1687 | return is_dry; | |
1688 | } | |
1689 | ||
1690 | if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) { | |
1691 | is_dry = 1; | |
1692 | ||
1693 | /* disable sender dry event */ | |
1694 | # ifdef SCTP_EVENT | |
16f8d4eb | 1695 | memset(&event, 0, sizeof(event)); |
0f113f3e MC |
1696 | event.se_assoc_id = 0; |
1697 | event.se_type = SCTP_SENDER_DRY_EVENT; | |
1698 | event.se_on = 0; | |
1699 | ret = | |
1700 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, | |
1701 | sizeof(struct sctp_event)); | |
1702 | # else | |
1703 | eventsize = (socklen_t) sizeof(struct sctp_event_subscribe); | |
1704 | ret = | |
1705 | getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1706 | &eventsize); | |
1707 | if (ret < 0) | |
1708 | return -1; | |
1709 | ||
1710 | event.sctp_sender_dry_event = 0; | |
1711 | ||
1712 | ret = | |
1713 | setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, | |
1714 | sizeof(struct sctp_event_subscribe)); | |
1715 | # endif | |
1716 | if (ret < 0) | |
1717 | return -1; | |
1718 | } | |
1719 | # ifdef SCTP_AUTHENTICATION_EVENT | |
1720 | if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
1721 | dgram_sctp_handle_auth_free_key_event(b, &snp); | |
1722 | # endif | |
7e159e01 | 1723 | |
0f113f3e MC |
1724 | if (data->handle_notifications != NULL) |
1725 | data->handle_notifications(b, data->notification_context, | |
1726 | (void *)&snp); | |
1727 | ||
1728 | /* found notification, peek again */ | |
16f8d4eb | 1729 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1730 | iov.iov_base = (char *)&snp; |
1731 | iov.iov_len = sizeof(union sctp_notification); | |
1732 | msg.msg_name = NULL; | |
1733 | msg.msg_namelen = 0; | |
1734 | msg.msg_iov = &iov; | |
1735 | msg.msg_iovlen = 1; | |
1736 | msg.msg_control = NULL; | |
1737 | msg.msg_controllen = 0; | |
1738 | msg.msg_flags = 0; | |
1739 | ||
1740 | /* if we have seen the dry already, don't wait */ | |
1741 | if (is_dry) { | |
1742 | sockflags = fcntl(b->num, F_GETFL, 0); | |
1743 | fcntl(b->num, F_SETFL, O_NONBLOCK); | |
1744 | } | |
1745 | ||
1746 | n = recvmsg(b->num, &msg, MSG_PEEK); | |
1747 | ||
1748 | if (is_dry) { | |
1749 | fcntl(b->num, F_SETFL, sockflags); | |
1750 | } | |
1751 | ||
1752 | if (n <= 0) { | |
1753 | if ((n < 0) && (get_last_socket_error() != EAGAIN) | |
1754 | && (get_last_socket_error() != EWOULDBLOCK)) | |
1755 | return -1; | |
1756 | else | |
1757 | return is_dry; | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | /* read anything else */ | |
1762 | return is_dry; | |
7e159e01 DSH |
1763 | } |
1764 | ||
1765 | int BIO_dgram_sctp_msg_waiting(BIO *b) | |
0f113f3e MC |
1766 | { |
1767 | int n, sockflags; | |
1768 | union sctp_notification snp; | |
1769 | struct msghdr msg; | |
1770 | struct iovec iov; | |
1771 | bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
1772 | ||
1773 | /* Check if there are any messages waiting to be read */ | |
1774 | do { | |
16f8d4eb | 1775 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1776 | iov.iov_base = (char *)&snp; |
1777 | iov.iov_len = sizeof(union sctp_notification); | |
1778 | msg.msg_name = NULL; | |
1779 | msg.msg_namelen = 0; | |
1780 | msg.msg_iov = &iov; | |
1781 | msg.msg_iovlen = 1; | |
1782 | msg.msg_control = NULL; | |
1783 | msg.msg_controllen = 0; | |
1784 | msg.msg_flags = 0; | |
1785 | ||
1786 | sockflags = fcntl(b->num, F_GETFL, 0); | |
1787 | fcntl(b->num, F_SETFL, O_NONBLOCK); | |
1788 | n = recvmsg(b->num, &msg, MSG_PEEK); | |
1789 | fcntl(b->num, F_SETFL, sockflags); | |
1790 | ||
1791 | /* if notification, process and try again */ | |
1792 | if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)) { | |
1793 | # ifdef SCTP_AUTHENTICATION_EVENT | |
1794 | if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
1795 | dgram_sctp_handle_auth_free_key_event(b, &snp); | |
1796 | # endif | |
7e159e01 | 1797 | |
16f8d4eb | 1798 | memset(&snp, 0, sizeof(snp)); |
0f113f3e MC |
1799 | iov.iov_base = (char *)&snp; |
1800 | iov.iov_len = sizeof(union sctp_notification); | |
1801 | msg.msg_name = NULL; | |
1802 | msg.msg_namelen = 0; | |
1803 | msg.msg_iov = &iov; | |
1804 | msg.msg_iovlen = 1; | |
1805 | msg.msg_control = NULL; | |
1806 | msg.msg_controllen = 0; | |
1807 | msg.msg_flags = 0; | |
1808 | n = recvmsg(b->num, &msg, 0); | |
1809 | ||
1810 | if (data->handle_notifications != NULL) | |
1811 | data->handle_notifications(b, data->notification_context, | |
1812 | (void *)&snp); | |
1813 | } | |
1814 | ||
1815 | } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)); | |
1816 | ||
1817 | /* Return 1 if there is a message to be read, return 0 otherwise. */ | |
1818 | if (n > 0) | |
1819 | return 1; | |
1820 | else | |
1821 | return 0; | |
1822 | } | |
7e159e01 DSH |
1823 | |
1824 | static int dgram_sctp_puts(BIO *bp, const char *str) | |
0f113f3e MC |
1825 | { |
1826 | int n, ret; | |
7e159e01 | 1827 | |
0f113f3e MC |
1828 | n = strlen(str); |
1829 | ret = dgram_sctp_write(bp, str, n); | |
26a7d938 | 1830 | return ret; |
0f113f3e MC |
1831 | } |
1832 | # endif | |
7e159e01 | 1833 | |
b3e72fc3 | 1834 | static int BIO_dgram_should_retry(int i) |
0f113f3e MC |
1835 | { |
1836 | int err; | |
36d16f8e | 1837 | |
0f113f3e MC |
1838 | if ((i == 0) || (i == -1)) { |
1839 | err = get_last_socket_error(); | |
36d16f8e | 1840 | |
0f113f3e MC |
1841 | # if defined(OPENSSL_SYS_WINDOWS) |
1842 | /* | |
1843 | * If the socket return value (i) is -1 and err is unexpectedly 0 at | |
1844 | * this point, the error code was overwritten by another system call | |
1845 | * before this error handling is called. | |
1846 | */ | |
36d16f8e BL |
1847 | # endif |
1848 | ||
26a7d938 | 1849 | return BIO_dgram_non_fatal_error(err); |
0f113f3e | 1850 | } |
26a7d938 | 1851 | return 0; |
0f113f3e MC |
1852 | } |
1853 | ||
1854 | int BIO_dgram_non_fatal_error(int err) | |
1855 | { | |
1856 | switch (err) { | |
1857 | # if defined(OPENSSL_SYS_WINDOWS) | |
1858 | # if defined(WSAEWOULDBLOCK) | |
1859 | case WSAEWOULDBLOCK: | |
1860 | # endif | |
36d16f8e | 1861 | # endif |
36d16f8e | 1862 | |
0f113f3e MC |
1863 | # ifdef EWOULDBLOCK |
1864 | # ifdef WSAEWOULDBLOCK | |
1865 | # if WSAEWOULDBLOCK != EWOULDBLOCK | |
1866 | case EWOULDBLOCK: | |
1867 | # endif | |
1868 | # else | |
1869 | case EWOULDBLOCK: | |
36d16f8e | 1870 | # endif |
36d16f8e | 1871 | # endif |
36d16f8e | 1872 | |
0f113f3e MC |
1873 | # ifdef EINTR |
1874 | case EINTR: | |
1875 | # endif | |
36d16f8e | 1876 | |
0f113f3e MC |
1877 | # ifdef EAGAIN |
1878 | # if EWOULDBLOCK != EAGAIN | |
1879 | case EAGAIN: | |
1880 | # endif | |
36d16f8e | 1881 | # endif |
36d16f8e | 1882 | |
0f113f3e MC |
1883 | # ifdef EPROTO |
1884 | case EPROTO: | |
1885 | # endif | |
36d16f8e | 1886 | |
0f113f3e MC |
1887 | # ifdef EINPROGRESS |
1888 | case EINPROGRESS: | |
1889 | # endif | |
36d16f8e | 1890 | |
0f113f3e MC |
1891 | # ifdef EALREADY |
1892 | case EALREADY: | |
1893 | # endif | |
36d16f8e | 1894 | |
208fb891 | 1895 | return 1; |
0f113f3e MC |
1896 | default: |
1897 | break; | |
1898 | } | |
26a7d938 | 1899 | return 0; |
0f113f3e | 1900 | } |
5d6a0179 RL |
1901 | |
1902 | static void get_current_time(struct timeval *t) | |
0f113f3e MC |
1903 | { |
1904 | # if defined(_WIN32) | |
1905 | SYSTEMTIME st; | |
1906 | union { | |
1907 | unsigned __int64 ul; | |
1908 | FILETIME ft; | |
1909 | } now; | |
1910 | ||
1911 | GetSystemTime(&st); | |
1912 | SystemTimeToFileTime(&st, &now.ft); | |
1913 | # ifdef __MINGW32__ | |
1914 | now.ul -= 116444736000000000ULL; | |
1915 | # else | |
d2a0d72f | 1916 | now.ul -= 116444736000000000UI64; /* re-bias to 1/1/1970 */ |
0f113f3e MC |
1917 | # endif |
1918 | t->tv_sec = (long)(now.ul / 10000000); | |
1919 | t->tv_usec = ((int)(now.ul % 10000000)) / 10; | |
0f113f3e MC |
1920 | # else |
1921 | gettimeofday(t, NULL); | |
1922 | # endif | |
1923 | } | |
74e056ed DSH |
1924 | |
1925 | #endif |