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| 1 /* crypto/bio/bio_dgram.c */ | |
| 2 /* | |
| 3 * DTLS implementation written by Nagendra Modadugu | |
| 4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. | |
| 5 */ | |
| 6 /* ==================================================================== | |
| 7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. | |
| 8 * | |
| 9 * Redistribution and use in source and binary forms, with or without | |
| 10 * modification, are permitted provided that the following conditions | |
| 11 * are met: | |
| 12 * | |
| 13 * 1. Redistributions of source code must retain the above copyright | |
| 14 * notice, this list of conditions and the following disclaimer. | |
| 15 * | |
| 16 * 2. Redistributions in binary form must reproduce the above copyright | |
| 17 * notice, this list of conditions and the following disclaimer in | |
| 18 * the documentation and/or other materials provided with the | |
| 19 * distribution. | |
| 20 * | |
| 21 * 3. All advertising materials mentioning features or use of this | |
| 22 * software must display the following acknowledgment: | |
| 23 * "This product includes software developed by the OpenSSL Project | |
| 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
| 25 * | |
| 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 27 * endorse or promote products derived from this software without | |
| 28 * prior written permission. For written permission, please contact | |
| 29 * openssl-core@OpenSSL.org. | |
| 30 * | |
| 31 * 5. Products derived from this software may not be called "OpenSSL" | |
| 32 * nor may "OpenSSL" appear in their names without prior written | |
| 33 * permission of the OpenSSL Project. | |
| 34 * | |
| 35 * 6. Redistributions of any form whatsoever must retain the following | |
| 36 * acknowledgment: | |
| 37 * "This product includes software developed by the OpenSSL Project | |
| 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 39 * | |
| 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 51 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 52 * ==================================================================== | |
| 53 * | |
| 54 * This product includes cryptographic software written by Eric Young | |
| 55 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 56 * Hudson (tjh@cryptsoft.com). | |
| 57 * | |
| 58 */ | |
| 59 | |
| 60 | |
| 61 #include <stdio.h> | |
| 62 #include <errno.h> | |
| 63 #define USE_SOCKETS | |
| 64 #include "cryptlib.h" | |
| 65 | |
| 66 #include <openssl/bio.h> | |
| 67 #ifndef OPENSSL_NO_DGRAM | |
| 68 | |
| 69 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) | |
| 70 #include <sys/timeb.h> | |
| 71 #endif | |
| 72 | |
| 73 #ifndef OPENSSL_NO_SCTP | |
| 74 #include <netinet/sctp.h> | |
| 75 #include <fcntl.h> | |
| 76 #define OPENSSL_SCTP_DATA_CHUNK_TYPE 0x00 | |
| 77 #define OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE 0xc0 | |
| 78 #endif | |
| 79 | |
| 80 #if defined(OPENSSL_SYS_LINUX) && !defined(IP_MTU) | |
| 81 #define IP_MTU 14 /* linux is lame */ | |
| 82 #endif | |
| 83 | |
| 84 #if defined(__FreeBSD__) && defined(IN6_IS_ADDR_V4MAPPED) | |
| 85 /* Standard definition causes type-punning problems. */ | |
| 86 #undef IN6_IS_ADDR_V4MAPPED | |
| 87 #define s6_addr32 __u6_addr.__u6_addr32 | |
| 88 #define IN6_IS_ADDR_V4MAPPED(a) \ | |
| 89 (((a)->s6_addr32[0] == 0) && \ | |
| 90 ((a)->s6_addr32[1] == 0) && \ | |
| 91 ((a)->s6_addr32[2] == htonl(0x0000ffff))) | |
| 92 #endif | |
| 93 | |
| 94 #ifdef WATT32 | |
| 95 #define sock_write SockWrite /* Watt-32 uses same names */ | |
| 96 #define sock_read SockRead | |
| 97 #define sock_puts SockPuts | |
| 98 #endif | |
| 99 | |
| 100 static int dgram_write(BIO *h, const char *buf, int num); | |
| 101 static int dgram_read(BIO *h, char *buf, int size); | |
| 102 static int dgram_puts(BIO *h, const char *str); | |
| 103 static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
| 104 static int dgram_new(BIO *h); | |
| 105 static int dgram_free(BIO *data); | |
| 106 static int dgram_clear(BIO *bio); | |
| 107 | |
| 108 #ifndef OPENSSL_NO_SCTP | |
| 109 static int dgram_sctp_write(BIO *h, const char *buf, int num); | |
| 110 static int dgram_sctp_read(BIO *h, char *buf, int size); | |
| 111 static int dgram_sctp_puts(BIO *h, const char *str); | |
| 112 static long dgram_sctp_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
| 113 static int dgram_sctp_new(BIO *h); | |
| 114 static int dgram_sctp_free(BIO *data); | |
| 115 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 116 static void dgram_sctp_handle_auth_free_key_event(BIO *b, union sctp_notificatio
n *snp); | |
| 117 #endif | |
| 118 #endif | |
| 119 | |
| 120 static int BIO_dgram_should_retry(int s); | |
| 121 | |
| 122 static void get_current_time(struct timeval *t); | |
| 123 | |
| 124 static BIO_METHOD methods_dgramp= | |
| 125 { | |
| 126 BIO_TYPE_DGRAM, | |
| 127 "datagram socket", | |
| 128 dgram_write, | |
| 129 dgram_read, | |
| 130 dgram_puts, | |
| 131 NULL, /* dgram_gets, */ | |
| 132 dgram_ctrl, | |
| 133 dgram_new, | |
| 134 dgram_free, | |
| 135 NULL, | |
| 136 }; | |
| 137 | |
| 138 #ifndef OPENSSL_NO_SCTP | |
| 139 static BIO_METHOD methods_dgramp_sctp= | |
| 140 { | |
| 141 BIO_TYPE_DGRAM_SCTP, | |
| 142 "datagram sctp socket", | |
| 143 dgram_sctp_write, | |
| 144 dgram_sctp_read, | |
| 145 dgram_sctp_puts, | |
| 146 NULL, /* dgram_gets, */ | |
| 147 dgram_sctp_ctrl, | |
| 148 dgram_sctp_new, | |
| 149 dgram_sctp_free, | |
| 150 NULL, | |
| 151 }; | |
| 152 #endif | |
| 153 | |
| 154 typedef struct bio_dgram_data_st | |
| 155 { | |
| 156 union { | |
| 157 struct sockaddr sa; | |
| 158 struct sockaddr_in sa_in; | |
| 159 #if OPENSSL_USE_IPV6 | |
| 160 struct sockaddr_in6 sa_in6; | |
| 161 #endif | |
| 162 } peer; | |
| 163 unsigned int connected; | |
| 164 unsigned int _errno; | |
| 165 unsigned int mtu; | |
| 166 struct timeval next_timeout; | |
| 167 struct timeval socket_timeout; | |
| 168 } bio_dgram_data; | |
| 169 | |
| 170 #ifndef OPENSSL_NO_SCTP | |
| 171 typedef struct bio_dgram_sctp_save_message_st | |
| 172 { | |
| 173 BIO *bio; | |
| 174 char *data; | |
| 175 int length; | |
| 176 } bio_dgram_sctp_save_message; | |
| 177 | |
| 178 typedef struct bio_dgram_sctp_data_st | |
| 179 { | |
| 180 union { | |
| 181 struct sockaddr sa; | |
| 182 struct sockaddr_in sa_in; | |
| 183 #if OPENSSL_USE_IPV6 | |
| 184 struct sockaddr_in6 sa_in6; | |
| 185 #endif | |
| 186 } peer; | |
| 187 unsigned int connected; | |
| 188 unsigned int _errno; | |
| 189 unsigned int mtu; | |
| 190 struct bio_dgram_sctp_sndinfo sndinfo; | |
| 191 struct bio_dgram_sctp_rcvinfo rcvinfo; | |
| 192 struct bio_dgram_sctp_prinfo prinfo; | |
| 193 void (*handle_notifications)(BIO *bio, void *context, void *buf); | |
| 194 void* notification_context; | |
| 195 int in_handshake; | |
| 196 int ccs_rcvd; | |
| 197 int ccs_sent; | |
| 198 int save_shutdown; | |
| 199 int peer_auth_tested; | |
| 200 bio_dgram_sctp_save_message saved_message; | |
| 201 } bio_dgram_sctp_data; | |
| 202 #endif | |
| 203 | |
| 204 BIO_METHOD *BIO_s_datagram(void) | |
| 205 { | |
| 206 return(&methods_dgramp); | |
| 207 } | |
| 208 | |
| 209 BIO *BIO_new_dgram(int fd, int close_flag) | |
| 210 { | |
| 211 BIO *ret; | |
| 212 | |
| 213 ret=BIO_new(BIO_s_datagram()); | |
| 214 if (ret == NULL) return(NULL); | |
| 215 BIO_set_fd(ret,fd,close_flag); | |
| 216 return(ret); | |
| 217 } | |
| 218 | |
| 219 static int dgram_new(BIO *bi) | |
| 220 { | |
| 221 bio_dgram_data *data = NULL; | |
| 222 | |
| 223 bi->init=0; | |
| 224 bi->num=0; | |
| 225 data = OPENSSL_malloc(sizeof(bio_dgram_data)); | |
| 226 if (data == NULL) | |
| 227 return 0; | |
| 228 memset(data, 0x00, sizeof(bio_dgram_data)); | |
| 229 bi->ptr = data; | |
| 230 | |
| 231 bi->flags=0; | |
| 232 return(1); | |
| 233 } | |
| 234 | |
| 235 static int dgram_free(BIO *a) | |
| 236 { | |
| 237 bio_dgram_data *data; | |
| 238 | |
| 239 if (a == NULL) return(0); | |
| 240 if ( ! dgram_clear(a)) | |
| 241 return 0; | |
| 242 | |
| 243 data = (bio_dgram_data *)a->ptr; | |
| 244 if(data != NULL) OPENSSL_free(data); | |
| 245 | |
| 246 return(1); | |
| 247 } | |
| 248 | |
| 249 static int dgram_clear(BIO *a) | |
| 250 { | |
| 251 if (a == NULL) return(0); | |
| 252 if (a->shutdown) | |
| 253 { | |
| 254 if (a->init) | |
| 255 { | |
| 256 SHUTDOWN2(a->num); | |
| 257 } | |
| 258 a->init=0; | |
| 259 a->flags=0; | |
| 260 } | |
| 261 return(1); | |
| 262 } | |
| 263 | |
| 264 static void dgram_adjust_rcv_timeout(BIO *b) | |
| 265 { | |
| 266 #if defined(SO_RCVTIMEO) | |
| 267 bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
| 268 union { size_t s; int i; } sz = {0}; | |
| 269 | |
| 270 /* Is a timer active? */ | |
| 271 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) | |
| 272 { | |
| 273 struct timeval timenow, timeleft; | |
| 274 | |
| 275 /* Read current socket timeout */ | |
| 276 #ifdef OPENSSL_SYS_WINDOWS | |
| 277 int timeout; | |
| 278 | |
| 279 sz.i = sizeof(timeout); | |
| 280 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 281 (void*)&timeout, &sz.i) < 0) | |
| 282 { perror("getsockopt"); } | |
| 283 else | |
| 284 { | |
| 285 data->socket_timeout.tv_sec = timeout / 1000; | |
| 286 data->socket_timeout.tv_usec = (timeout % 1000) * 1000; | |
| 287 } | |
| 288 #else | |
| 289 sz.i = sizeof(data->socket_timeout); | |
| 290 if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 291 &(data->socket_timeout), (void *
)&sz) < 0) | |
| 292 { perror("getsockopt"); } | |
| 293 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0) | |
| 294 OPENSSL_assert(sz.s<=sizeof(data->socket_timeout)); | |
| 295 #endif | |
| 296 | |
| 297 /* Get current time */ | |
| 298 get_current_time(&timenow); | |
| 299 | |
| 300 /* Calculate time left until timer expires */ | |
| 301 memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval))
; | |
| 302 timeleft.tv_sec -= timenow.tv_sec; | |
| 303 timeleft.tv_usec -= timenow.tv_usec; | |
| 304 if (timeleft.tv_usec < 0) | |
| 305 { | |
| 306 timeleft.tv_sec--; | |
| 307 timeleft.tv_usec += 1000000; | |
| 308 } | |
| 309 | |
| 310 if (timeleft.tv_sec < 0) | |
| 311 { | |
| 312 timeleft.tv_sec = 0; | |
| 313 timeleft.tv_usec = 1; | |
| 314 } | |
| 315 | |
| 316 /* Adjust socket timeout if next handhake message timer | |
| 317 * will expire earlier. | |
| 318 */ | |
| 319 if ((data->socket_timeout.tv_sec == 0 && data->socket_timeout.tv
_usec == 0) || | |
| 320 (data->socket_timeout.tv_sec > timeleft.tv_sec) || | |
| 321 (data->socket_timeout.tv_sec == timeleft.tv_sec && | |
| 322 data->socket_timeout.tv_usec >= timeleft.tv_usec)) | |
| 323 { | |
| 324 #ifdef OPENSSL_SYS_WINDOWS | |
| 325 timeout = timeleft.tv_sec * 1000 + timeleft.tv_usec / 10
00; | |
| 326 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 327 (void*)&timeout, sizeof(timeo
ut)) < 0) | |
| 328 { perror("setsockopt"); } | |
| 329 #else | |
| 330 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &timele
ft, | |
| 331 sizeof(struct timeval))
< 0) | |
| 332 { perror("setsockopt"); } | |
| 333 #endif | |
| 334 } | |
| 335 } | |
| 336 #endif | |
| 337 } | |
| 338 | |
| 339 static void dgram_reset_rcv_timeout(BIO *b) | |
| 340 { | |
| 341 #if defined(SO_RCVTIMEO) | |
| 342 bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
| 343 | |
| 344 /* Is a timer active? */ | |
| 345 if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) | |
| 346 { | |
| 347 #ifdef OPENSSL_SYS_WINDOWS | |
| 348 int timeout = data->socket_timeout.tv_sec * 1000 + | |
| 349 data->socket_timeout.tv_usec / 1000; | |
| 350 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 351 (void*)&timeout, sizeof(timeout)) < 0
) | |
| 352 { perror("setsockopt"); } | |
| 353 #else | |
| 354 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, &(data->socket_
timeout), | |
| 355 sizeof(struct timeval)) < 0) | |
| 356 { perror("setsockopt"); } | |
| 357 #endif | |
| 358 } | |
| 359 #endif | |
| 360 } | |
| 361 | |
| 362 static int dgram_read(BIO *b, char *out, int outl) | |
| 363 { | |
| 364 int ret=0; | |
| 365 bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
| 366 | |
| 367 struct { | |
| 368 /* | |
| 369 * See commentary in b_sock.c. <appro> | |
| 370 */ | |
| 371 union { size_t s; int i; } len; | |
| 372 union { | |
| 373 struct sockaddr sa; | |
| 374 struct sockaddr_in sa_in; | |
| 375 #if OPENSSL_USE_IPV6 | |
| 376 struct sockaddr_in6 sa_in6; | |
| 377 #endif | |
| 378 } peer; | |
| 379 } sa; | |
| 380 | |
| 381 sa.len.s=0; | |
| 382 sa.len.i=sizeof(sa.peer); | |
| 383 | |
| 384 if (out != NULL) | |
| 385 { | |
| 386 clear_socket_error(); | |
| 387 memset(&sa.peer, 0x00, sizeof(sa.peer)); | |
| 388 dgram_adjust_rcv_timeout(b); | |
| 389 ret=recvfrom(b->num,out,outl,0,&sa.peer.sa,(void *)&sa.len); | |
| 390 if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0) | |
| 391 { | |
| 392 OPENSSL_assert(sa.len.s<=sizeof(sa.peer)); | |
| 393 sa.len.i = (int)sa.len.s; | |
| 394 } | |
| 395 | |
| 396 if ( ! data->connected && ret >= 0) | |
| 397 BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, &sa.peer); | |
| 398 | |
| 399 BIO_clear_retry_flags(b); | |
| 400 if (ret < 0) | |
| 401 { | |
| 402 if (BIO_dgram_should_retry(ret)) | |
| 403 { | |
| 404 BIO_set_retry_read(b); | |
| 405 data->_errno = get_last_socket_error(); | |
| 406 } | |
| 407 } | |
| 408 | |
| 409 dgram_reset_rcv_timeout(b); | |
| 410 } | |
| 411 return(ret); | |
| 412 } | |
| 413 | |
| 414 static int dgram_write(BIO *b, const char *in, int inl) | |
| 415 { | |
| 416 int ret; | |
| 417 bio_dgram_data *data = (bio_dgram_data *)b->ptr; | |
| 418 clear_socket_error(); | |
| 419 | |
| 420 if ( data->connected ) | |
| 421 ret=writesocket(b->num,in,inl); | |
| 422 else | |
| 423 { | |
| 424 int peerlen = sizeof(data->peer); | |
| 425 | |
| 426 if (data->peer.sa.sa_family == AF_INET) | |
| 427 peerlen = sizeof(data->peer.sa_in); | |
| 428 #if OPENSSL_USE_IPV6 | |
| 429 else if (data->peer.sa.sa_family == AF_INET6) | |
| 430 peerlen = sizeof(data->peer.sa_in6); | |
| 431 #endif | |
| 432 #if defined(NETWARE_CLIB) && defined(NETWARE_BSDSOCK) | |
| 433 ret=sendto(b->num, (char *)in, inl, 0, &data->peer.sa, peerlen); | |
| 434 #else | |
| 435 ret=sendto(b->num, in, inl, 0, &data->peer.sa, peerlen); | |
| 436 #endif | |
| 437 } | |
| 438 | |
| 439 BIO_clear_retry_flags(b); | |
| 440 if (ret <= 0) | |
| 441 { | |
| 442 if (BIO_dgram_should_retry(ret)) | |
| 443 { | |
| 444 BIO_set_retry_write(b); | |
| 445 data->_errno = get_last_socket_error(); | |
| 446 | |
| 447 #if 0 /* higher layers are responsible for querying MTU, if necessary */ | |
| 448 if ( data->_errno == EMSGSIZE) | |
| 449 /* retrieve the new MTU */ | |
| 450 BIO_ctrl(b, BIO_CTRL_DGRAM_QUERY_MTU, 0, NULL); | |
| 451 #endif | |
| 452 } | |
| 453 } | |
| 454 return(ret); | |
| 455 } | |
| 456 | |
| 457 static long dgram_ctrl(BIO *b, int cmd, long num, void *ptr) | |
| 458 { | |
| 459 long ret=1; | |
| 460 int *ip; | |
| 461 struct sockaddr *to = NULL; | |
| 462 bio_dgram_data *data = NULL; | |
| 463 #if defined(OPENSSL_SYS_LINUX) && (defined(IP_MTU_DISCOVER) || defined(IP_MTU)) | |
| 464 int sockopt_val = 0; | |
| 465 socklen_t sockopt_len; /* assume that system supporting IP_MTU is | |
| 466 * modern enough to define socklen_t */ | |
| 467 socklen_t addr_len; | |
| 468 union { | |
| 469 struct sockaddr sa; | |
| 470 struct sockaddr_in s4; | |
| 471 #if OPENSSL_USE_IPV6 | |
| 472 struct sockaddr_in6 s6; | |
| 473 #endif | |
| 474 } addr; | |
| 475 #endif | |
| 476 | |
| 477 data = (bio_dgram_data *)b->ptr; | |
| 478 | |
| 479 switch (cmd) | |
| 480 { | |
| 481 case BIO_CTRL_RESET: | |
| 482 num=0; | |
| 483 case BIO_C_FILE_SEEK: | |
| 484 ret=0; | |
| 485 break; | |
| 486 case BIO_C_FILE_TELL: | |
| 487 case BIO_CTRL_INFO: | |
| 488 ret=0; | |
| 489 break; | |
| 490 case BIO_C_SET_FD: | |
| 491 dgram_clear(b); | |
| 492 b->num= *((int *)ptr); | |
| 493 b->shutdown=(int)num; | |
| 494 b->init=1; | |
| 495 break; | |
| 496 case BIO_C_GET_FD: | |
| 497 if (b->init) | |
| 498 { | |
| 499 ip=(int *)ptr; | |
| 500 if (ip != NULL) *ip=b->num; | |
| 501 ret=b->num; | |
| 502 } | |
| 503 else | |
| 504 ret= -1; | |
| 505 break; | |
| 506 case BIO_CTRL_GET_CLOSE: | |
| 507 ret=b->shutdown; | |
| 508 break; | |
| 509 case BIO_CTRL_SET_CLOSE: | |
| 510 b->shutdown=(int)num; | |
| 511 break; | |
| 512 case BIO_CTRL_PENDING: | |
| 513 case BIO_CTRL_WPENDING: | |
| 514 ret=0; | |
| 515 break; | |
| 516 case BIO_CTRL_DUP: | |
| 517 case BIO_CTRL_FLUSH: | |
| 518 ret=1; | |
| 519 break; | |
| 520 case BIO_CTRL_DGRAM_CONNECT: | |
| 521 to = (struct sockaddr *)ptr; | |
| 522 #if 0 | |
| 523 if (connect(b->num, to, sizeof(struct sockaddr)) < 0) | |
| 524 { perror("connect"); ret = 0; } | |
| 525 else | |
| 526 { | |
| 527 #endif | |
| 528 switch (to->sa_family) | |
| 529 { | |
| 530 case AF_INET: | |
| 531 memcpy(&data->peer,to,sizeof(data->peer.
sa_in)); | |
| 532 break; | |
| 533 #if OPENSSL_USE_IPV6 | |
| 534 case AF_INET6: | |
| 535 memcpy(&data->peer,to,sizeof(data->peer.
sa_in6)); | |
| 536 break; | |
| 537 #endif | |
| 538 default: | |
| 539 memcpy(&data->peer,to,sizeof(data->peer.
sa)); | |
| 540 break; | |
| 541 } | |
| 542 #if 0 | |
| 543 } | |
| 544 #endif | |
| 545 break; | |
| 546 /* (Linux)kernel sets DF bit on outgoing IP packets */ | |
| 547 case BIO_CTRL_DGRAM_MTU_DISCOVER: | |
| 548 #if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDIS
C_DO) | |
| 549 addr_len = (socklen_t)sizeof(addr); | |
| 550 memset((void *)&addr, 0, sizeof(addr)); | |
| 551 if (getsockname(b->num, &addr.sa, &addr_len) < 0) | |
| 552 { | |
| 553 ret = 0; | |
| 554 break; | |
| 555 } | |
| 556 switch (addr.sa.sa_family) | |
| 557 { | |
| 558 case AF_INET: | |
| 559 sockopt_val = IP_PMTUDISC_DO; | |
| 560 if ((ret = setsockopt(b->num, IPPROTO_IP, IP_MTU_DISCOVE
R, | |
| 561 &sockopt_val, sizeof(sockopt_val))) < 0) | |
| 562 perror("setsockopt"); | |
| 563 break; | |
| 564 #if OPENSSL_USE_IPV6 && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) | |
| 565 case AF_INET6: | |
| 566 sockopt_val = IPV6_PMTUDISC_DO; | |
| 567 if ((ret = setsockopt(b->num, IPPROTO_IPV6, IPV6_MTU_DIS
COVER, | |
| 568 &sockopt_val, sizeof(sockopt_val))) < 0) | |
| 569 perror("setsockopt"); | |
| 570 break; | |
| 571 #endif | |
| 572 default: | |
| 573 ret = -1; | |
| 574 break; | |
| 575 } | |
| 576 ret = -1; | |
| 577 #else | |
| 578 break; | |
| 579 #endif | |
| 580 case BIO_CTRL_DGRAM_QUERY_MTU: | |
| 581 #if defined(OPENSSL_SYS_LINUX) && defined(IP_MTU) | |
| 582 addr_len = (socklen_t)sizeof(addr); | |
| 583 memset((void *)&addr, 0, sizeof(addr)); | |
| 584 if (getsockname(b->num, &addr.sa, &addr_len) < 0) | |
| 585 { | |
| 586 ret = 0; | |
| 587 break; | |
| 588 } | |
| 589 sockopt_len = sizeof(sockopt_val); | |
| 590 switch (addr.sa.sa_family) | |
| 591 { | |
| 592 case AF_INET: | |
| 593 if ((ret = getsockopt(b->num, IPPROTO_IP, IP_MTU, (void
*)&sockopt_val, | |
| 594 &sockopt_len)) < 0 || sockopt_val < 0) | |
| 595 { | |
| 596 ret = 0; | |
| 597 } | |
| 598 else | |
| 599 { | |
| 600 /* we assume that the transport protocol is UDP
and no | |
| 601 * IP options are used. | |
| 602 */ | |
| 603 data->mtu = sockopt_val - 8 - 20; | |
| 604 ret = data->mtu; | |
| 605 } | |
| 606 break; | |
| 607 #if OPENSSL_USE_IPV6 && defined(IPV6_MTU) | |
| 608 case AF_INET6: | |
| 609 if ((ret = getsockopt(b->num, IPPROTO_IPV6, IPV6_MTU, (v
oid *)&sockopt_val, | |
| 610 &sockopt_len)) < 0 || sockopt_val < 0) | |
| 611 { | |
| 612 ret = 0; | |
| 613 } | |
| 614 else | |
| 615 { | |
| 616 /* we assume that the transport protocol is UDP
and no | |
| 617 * IPV6 options are used. | |
| 618 */ | |
| 619 data->mtu = sockopt_val - 8 - 40; | |
| 620 ret = data->mtu; | |
| 621 } | |
| 622 break; | |
| 623 #endif | |
| 624 default: | |
| 625 ret = 0; | |
| 626 break; | |
| 627 } | |
| 628 #else | |
| 629 ret = 0; | |
| 630 #endif | |
| 631 break; | |
| 632 case BIO_CTRL_DGRAM_GET_FALLBACK_MTU: | |
| 633 switch (data->peer.sa.sa_family) | |
| 634 { | |
| 635 case AF_INET: | |
| 636 ret = 576 - 20 - 8; | |
| 637 break; | |
| 638 #if OPENSSL_USE_IPV6 | |
| 639 case AF_INET6: | |
| 640 #ifdef IN6_IS_ADDR_V4MAPPED | |
| 641 if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6
_addr)) | |
| 642 ret = 576 - 20 - 8; | |
| 643 else | |
| 644 #endif | |
| 645 ret = 1280 - 40 - 8; | |
| 646 break; | |
| 647 #endif | |
| 648 default: | |
| 649 ret = 576 - 20 - 8; | |
| 650 break; | |
| 651 } | |
| 652 break; | |
| 653 case BIO_CTRL_DGRAM_GET_MTU: | |
| 654 return data->mtu; | |
| 655 break; | |
| 656 case BIO_CTRL_DGRAM_SET_MTU: | |
| 657 data->mtu = num; | |
| 658 ret = num; | |
| 659 break; | |
| 660 case BIO_CTRL_DGRAM_SET_CONNECTED: | |
| 661 to = (struct sockaddr *)ptr; | |
| 662 | |
| 663 if ( to != NULL) | |
| 664 { | |
| 665 data->connected = 1; | |
| 666 switch (to->sa_family) | |
| 667 { | |
| 668 case AF_INET: | |
| 669 memcpy(&data->peer,to,sizeof(data->peer.
sa_in)); | |
| 670 break; | |
| 671 #if OPENSSL_USE_IPV6 | |
| 672 case AF_INET6: | |
| 673 memcpy(&data->peer,to,sizeof(data->peer.
sa_in6)); | |
| 674 break; | |
| 675 #endif | |
| 676 default: | |
| 677 memcpy(&data->peer,to,sizeof(data->peer.
sa)); | |
| 678 break; | |
| 679 } | |
| 680 } | |
| 681 else | |
| 682 { | |
| 683 data->connected = 0; | |
| 684 memset(&(data->peer), 0x00, sizeof(data->peer)); | |
| 685 } | |
| 686 break; | |
| 687 case BIO_CTRL_DGRAM_GET_PEER: | |
| 688 switch (data->peer.sa.sa_family) | |
| 689 { | |
| 690 case AF_INET: | |
| 691 ret=sizeof(data->peer.sa_in); | |
| 692 break; | |
| 693 #if OPENSSL_USE_IPV6 | |
| 694 case AF_INET6: | |
| 695 ret=sizeof(data->peer.sa_in6); | |
| 696 break; | |
| 697 #endif | |
| 698 default: | |
| 699 ret=sizeof(data->peer.sa); | |
| 700 break; | |
| 701 } | |
| 702 if (num==0 || num>ret) | |
| 703 num=ret; | |
| 704 memcpy(ptr,&data->peer,(ret=num)); | |
| 705 break; | |
| 706 case BIO_CTRL_DGRAM_SET_PEER: | |
| 707 to = (struct sockaddr *) ptr; | |
| 708 switch (to->sa_family) | |
| 709 { | |
| 710 case AF_INET: | |
| 711 memcpy(&data->peer,to,sizeof(data->peer.sa_in)); | |
| 712 break; | |
| 713 #if OPENSSL_USE_IPV6 | |
| 714 case AF_INET6: | |
| 715 memcpy(&data->peer,to,sizeof(data->peer.sa_in6))
; | |
| 716 break; | |
| 717 #endif | |
| 718 default: | |
| 719 memcpy(&data->peer,to,sizeof(data->peer.sa)); | |
| 720 break; | |
| 721 } | |
| 722 break; | |
| 723 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT: | |
| 724 memcpy(&(data->next_timeout), ptr, sizeof(struct timeval)); | |
| 725 break; | |
| 726 #if defined(SO_RCVTIMEO) | |
| 727 case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT: | |
| 728 #ifdef OPENSSL_SYS_WINDOWS | |
| 729 { | |
| 730 struct timeval *tv = (struct timeval *)ptr; | |
| 731 int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000; | |
| 732 if (setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 733 (void*)&timeout, sizeof(timeout)) < 0) | |
| 734 { perror("setsockopt"); ret = -1; } | |
| 735 } | |
| 736 #else | |
| 737 if ( setsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, ptr, | |
| 738 sizeof(struct timeval)) < 0) | |
| 739 { perror("setsockopt"); ret = -1; } | |
| 740 #endif | |
| 741 break; | |
| 742 case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT: | |
| 743 { | |
| 744 union { size_t s; int i; } sz = {0}; | |
| 745 #ifdef OPENSSL_SYS_WINDOWS | |
| 746 int timeout; | |
| 747 struct timeval *tv = (struct timeval *)ptr; | |
| 748 | |
| 749 sz.i = sizeof(timeout); | |
| 750 if (getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 751 (void*)&timeout, &sz.i) < 0) | |
| 752 { perror("getsockopt"); ret = -1; } | |
| 753 else | |
| 754 { | |
| 755 tv->tv_sec = timeout / 1000; | |
| 756 tv->tv_usec = (timeout % 1000) * 1000; | |
| 757 ret = sizeof(*tv); | |
| 758 } | |
| 759 #else | |
| 760 sz.i = sizeof(struct timeval); | |
| 761 if ( getsockopt(b->num, SOL_SOCKET, SO_RCVTIMEO, | |
| 762 ptr, (void *)&sz) < 0) | |
| 763 { perror("getsockopt"); ret = -1; } | |
| 764 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0) | |
| 765 { | |
| 766 OPENSSL_assert(sz.s<=sizeof(struct timeval)); | |
| 767 ret = (int)sz.s; | |
| 768 } | |
| 769 else | |
| 770 ret = sz.i; | |
| 771 #endif | |
| 772 } | |
| 773 break; | |
| 774 #endif | |
| 775 #if defined(SO_SNDTIMEO) | |
| 776 case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT: | |
| 777 #ifdef OPENSSL_SYS_WINDOWS | |
| 778 { | |
| 779 struct timeval *tv = (struct timeval *)ptr; | |
| 780 int timeout = tv->tv_sec * 1000 + tv->tv_usec/1000; | |
| 781 if (setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
| 782 (void*)&timeout, sizeof(timeout)) < 0) | |
| 783 { perror("setsockopt"); ret = -1; } | |
| 784 } | |
| 785 #else | |
| 786 if ( setsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, ptr, | |
| 787 sizeof(struct timeval)) < 0) | |
| 788 { perror("setsockopt"); ret = -1; } | |
| 789 #endif | |
| 790 break; | |
| 791 case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT: | |
| 792 { | |
| 793 union { size_t s; int i; } sz = {0}; | |
| 794 #ifdef OPENSSL_SYS_WINDOWS | |
| 795 int timeout; | |
| 796 struct timeval *tv = (struct timeval *)ptr; | |
| 797 | |
| 798 sz.i = sizeof(timeout); | |
| 799 if (getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
| 800 (void*)&timeout, &sz.i) < 0) | |
| 801 { perror("getsockopt"); ret = -1; } | |
| 802 else | |
| 803 { | |
| 804 tv->tv_sec = timeout / 1000; | |
| 805 tv->tv_usec = (timeout % 1000) * 1000; | |
| 806 ret = sizeof(*tv); | |
| 807 } | |
| 808 #else | |
| 809 sz.i = sizeof(struct timeval); | |
| 810 if ( getsockopt(b->num, SOL_SOCKET, SO_SNDTIMEO, | |
| 811 ptr, (void *)&sz) < 0) | |
| 812 { perror("getsockopt"); ret = -1; } | |
| 813 else if (sizeof(sz.s)!=sizeof(sz.i) && sz.i==0) | |
| 814 { | |
| 815 OPENSSL_assert(sz.s<=sizeof(struct timeval)); | |
| 816 ret = (int)sz.s; | |
| 817 } | |
| 818 else | |
| 819 ret = sz.i; | |
| 820 #endif | |
| 821 } | |
| 822 break; | |
| 823 #endif | |
| 824 case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP: | |
| 825 /* fall-through */ | |
| 826 case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP: | |
| 827 #ifdef OPENSSL_SYS_WINDOWS | |
| 828 if ( data->_errno == WSAETIMEDOUT) | |
| 829 #else | |
| 830 if ( data->_errno == EAGAIN) | |
| 831 #endif | |
| 832 { | |
| 833 ret = 1; | |
| 834 data->_errno = 0; | |
| 835 } | |
| 836 else | |
| 837 ret = 0; | |
| 838 break; | |
| 839 #ifdef EMSGSIZE | |
| 840 case BIO_CTRL_DGRAM_MTU_EXCEEDED: | |
| 841 if ( data->_errno == EMSGSIZE) | |
| 842 { | |
| 843 ret = 1; | |
| 844 data->_errno = 0; | |
| 845 } | |
| 846 else | |
| 847 ret = 0; | |
| 848 break; | |
| 849 #endif | |
| 850 default: | |
| 851 ret=0; | |
| 852 break; | |
| 853 } | |
| 854 return(ret); | |
| 855 } | |
| 856 | |
| 857 static int dgram_puts(BIO *bp, const char *str) | |
| 858 { | |
| 859 int n,ret; | |
| 860 | |
| 861 n=strlen(str); | |
| 862 ret=dgram_write(bp,str,n); | |
| 863 return(ret); | |
| 864 } | |
| 865 | |
| 866 #ifndef OPENSSL_NO_SCTP | |
| 867 BIO_METHOD *BIO_s_datagram_sctp(void) | |
| 868 { | |
| 869 return(&methods_dgramp_sctp); | |
| 870 } | |
| 871 | |
| 872 BIO *BIO_new_dgram_sctp(int fd, int close_flag) | |
| 873 { | |
| 874 BIO *bio; | |
| 875 int ret, optval = 20000; | |
| 876 int auth_data = 0, auth_forward = 0; | |
| 877 unsigned char *p; | |
| 878 struct sctp_authchunk auth; | |
| 879 struct sctp_authchunks *authchunks; | |
| 880 socklen_t sockopt_len; | |
| 881 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 882 #ifdef SCTP_EVENT | |
| 883 struct sctp_event event; | |
| 884 #else | |
| 885 struct sctp_event_subscribe event; | |
| 886 #endif | |
| 887 #endif | |
| 888 | |
| 889 bio=BIO_new(BIO_s_datagram_sctp()); | |
| 890 if (bio == NULL) return(NULL); | |
| 891 BIO_set_fd(bio,fd,close_flag); | |
| 892 | |
| 893 /* Activate SCTP-AUTH for DATA and FORWARD-TSN chunks */ | |
| 894 auth.sauth_chunk = OPENSSL_SCTP_DATA_CHUNK_TYPE; | |
| 895 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct
sctp_authchunk)); | |
| 896 OPENSSL_assert(ret >= 0); | |
| 897 auth.sauth_chunk = OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE; | |
| 898 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_AUTH_CHUNK, &auth, sizeof(struct
sctp_authchunk)); | |
| 899 OPENSSL_assert(ret >= 0); | |
| 900 | |
| 901 /* Test if activation was successful. When using accept(), | |
| 902 * SCTP-AUTH has to be activated for the listening socket | |
| 903 * already, otherwise the connected socket won't use it. */ | |
| 904 sockopt_len = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof(uint8_t)); | |
| 905 authchunks = OPENSSL_malloc(sockopt_len); | |
| 906 memset(authchunks, 0, sizeof(sockopt_len)); | |
| 907 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_LOCAL_AUTH_CHUNKS, authchunks, &
sockopt_len); | |
| 908 OPENSSL_assert(ret >= 0); | |
| 909 | |
| 910 for (p = (unsigned char*) authchunks + sizeof(sctp_assoc_t); | |
| 911 p < (unsigned char*) authchunks + sockopt_len; | |
| 912 p += sizeof(uint8_t)) | |
| 913 { | |
| 914 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_data = 1; | |
| 915 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYPE) auth_forward
= 1; | |
| 916 } | |
| 917 | |
| 918 OPENSSL_free(authchunks); | |
| 919 | |
| 920 OPENSSL_assert(auth_data); | |
| 921 OPENSSL_assert(auth_forward); | |
| 922 | |
| 923 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 924 #ifdef SCTP_EVENT | |
| 925 memset(&event, 0, sizeof(struct sctp_event)); | |
| 926 event.se_assoc_id = 0; | |
| 927 event.se_type = SCTP_AUTHENTICATION_EVENT; | |
| 928 event.se_on = 1; | |
| 929 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sct
p_event)); | |
| 930 OPENSSL_assert(ret >= 0); | |
| 931 #else | |
| 932 sockopt_len = (socklen_t) sizeof(struct sctp_event_subscribe); | |
| 933 ret = getsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, &sockopt_len); | |
| 934 OPENSSL_assert(ret >= 0); | |
| 935 | |
| 936 event.sctp_authentication_event = 1; | |
| 937 | |
| 938 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struct sc
tp_event_subscribe)); | |
| 939 OPENSSL_assert(ret >= 0); | |
| 940 #endif | |
| 941 #endif | |
| 942 | |
| 943 /* Disable partial delivery by setting the min size | |
| 944 * larger than the max record size of 2^14 + 2048 + 13 | |
| 945 */ | |
| 946 ret = setsockopt(fd, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT, &optval,
sizeof(optval)); | |
| 947 OPENSSL_assert(ret >= 0); | |
| 948 | |
| 949 return(bio); | |
| 950 } | |
| 951 | |
| 952 int BIO_dgram_is_sctp(BIO *bio) | |
| 953 { | |
| 954 return (BIO_method_type(bio) == BIO_TYPE_DGRAM_SCTP); | |
| 955 } | |
| 956 | |
| 957 static int dgram_sctp_new(BIO *bi) | |
| 958 { | |
| 959 bio_dgram_sctp_data *data = NULL; | |
| 960 | |
| 961 bi->init=0; | |
| 962 bi->num=0; | |
| 963 data = OPENSSL_malloc(sizeof(bio_dgram_sctp_data)); | |
| 964 if (data == NULL) | |
| 965 return 0; | |
| 966 memset(data, 0x00, sizeof(bio_dgram_sctp_data)); | |
| 967 #ifdef SCTP_PR_SCTP_NONE | |
| 968 data->prinfo.pr_policy = SCTP_PR_SCTP_NONE; | |
| 969 #endif | |
| 970 bi->ptr = data; | |
| 971 | |
| 972 bi->flags=0; | |
| 973 return(1); | |
| 974 } | |
| 975 | |
| 976 static int dgram_sctp_free(BIO *a) | |
| 977 { | |
| 978 bio_dgram_sctp_data *data; | |
| 979 | |
| 980 if (a == NULL) return(0); | |
| 981 if ( ! dgram_clear(a)) | |
| 982 return 0; | |
| 983 | |
| 984 data = (bio_dgram_sctp_data *)a->ptr; | |
| 985 if(data != NULL) OPENSSL_free(data); | |
| 986 | |
| 987 return(1); | |
| 988 } | |
| 989 | |
| 990 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 991 void dgram_sctp_handle_auth_free_key_event(BIO *b, 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 { | |
| 998 struct sctp_authkeyid authkeyid; | |
| 999 | |
| 1000 /* delete key */ | |
| 1001 authkeyid.scact_keynumber = authkeyevent->auth_keynumber; | |
| 1002 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DELETE_KEY, | |
| 1003 &authkeyid, sizeof(struct sctp_authkeyid)); | |
| 1004 } | |
| 1005 } | |
| 1006 #endif | |
| 1007 | |
| 1008 static int dgram_sctp_read(BIO *b, char *out, int outl) | |
| 1009 { | |
| 1010 int ret = 0, n = 0, i, optval; | |
| 1011 socklen_t optlen; | |
| 1012 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr; | |
| 1013 union sctp_notification *snp; | |
| 1014 struct msghdr msg; | |
| 1015 struct iovec iov; | |
| 1016 struct cmsghdr *cmsg; | |
| 1017 char cmsgbuf[512]; | |
| 1018 | |
| 1019 if (out != NULL) | |
| 1020 { | |
| 1021 clear_socket_error(); | |
| 1022 | |
| 1023 do | |
| 1024 { | |
| 1025 memset(&data->rcvinfo, 0x00, sizeof(struct bio_dgram_sct
p_rcvinfo)); | |
| 1026 iov.iov_base = out; | |
| 1027 iov.iov_len = outl; | |
| 1028 msg.msg_name = NULL; | |
| 1029 msg.msg_namelen = 0; | |
| 1030 msg.msg_iov = &iov; | |
| 1031 msg.msg_iovlen = 1; | |
| 1032 msg.msg_control = cmsgbuf; | |
| 1033 msg.msg_controllen = 512; | |
| 1034 msg.msg_flags = 0; | |
| 1035 n = recvmsg(b->num, &msg, 0); | |
| 1036 | |
| 1037 if (msg.msg_controllen > 0) | |
| 1038 { | |
| 1039 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CM
SG_NXTHDR(&msg, cmsg)) | |
| 1040 { | |
| 1041 if (cmsg->cmsg_level != IPPROTO_SCTP) | |
| 1042 continue; | |
| 1043 #ifdef SCTP_RCVINFO | |
| 1044 if (cmsg->cmsg_type == SCTP_RCVINFO) | |
| 1045 { | |
| 1046 struct sctp_rcvinfo *rcvinfo; | |
| 1047 | |
| 1048 rcvinfo = (struct sctp_rcvinfo *
)CMSG_DATA(cmsg); | |
| 1049 data->rcvinfo.rcv_sid = rcvinfo-
>rcv_sid; | |
| 1050 data->rcvinfo.rcv_ssn = rcvinfo-
>rcv_ssn; | |
| 1051 data->rcvinfo.rcv_flags = rcvinf
o->rcv_flags; | |
| 1052 data->rcvinfo.rcv_ppid = rcvinfo
->rcv_ppid; | |
| 1053 data->rcvinfo.rcv_tsn = rcvinfo-
>rcv_tsn; | |
| 1054 data->rcvinfo.rcv_cumtsn = rcvin
fo->rcv_cumtsn; | |
| 1055 data->rcvinfo.rcv_context = rcvi
nfo->rcv_context; | |
| 1056 } | |
| 1057 #endif | |
| 1058 #ifdef SCTP_SNDRCV | |
| 1059 if (cmsg->cmsg_type == SCTP_SNDRCV) | |
| 1060 { | |
| 1061 struct sctp_sndrcvinfo *sndrcvin
fo; | |
| 1062 | |
| 1063 sndrcvinfo = (struct sctp_sndrcv
info *)CMSG_DATA(cmsg); | |
| 1064 data->rcvinfo.rcv_sid = sndrcvin
fo->sinfo_stream; | |
| 1065 data->rcvinfo.rcv_ssn = sndrcvin
fo->sinfo_ssn; | |
| 1066 data->rcvinfo.rcv_flags = sndrcv
info->sinfo_flags; | |
| 1067 data->rcvinfo.rcv_ppid = sndrcvi
nfo->sinfo_ppid; | |
| 1068 data->rcvinfo.rcv_tsn = sndrcvin
fo->sinfo_tsn; | |
| 1069 data->rcvinfo.rcv_cumtsn = sndrc
vinfo->sinfo_cumtsn; | |
| 1070 data->rcvinfo.rcv_context = sndr
cvinfo->sinfo_context; | |
| 1071 } | |
| 1072 #endif | |
| 1073 } | |
| 1074 } | |
| 1075 | |
| 1076 if (n <= 0) | |
| 1077 { | |
| 1078 if (n < 0) | |
| 1079 ret = n; | |
| 1080 break; | |
| 1081 } | |
| 1082 | |
| 1083 if (msg.msg_flags & MSG_NOTIFICATION) | |
| 1084 { | |
| 1085 snp = (union sctp_notification*) out; | |
| 1086 if (snp->sn_header.sn_type == SCTP_SENDER_DRY_EV
ENT) | |
| 1087 { | |
| 1088 #ifdef SCTP_EVENT | |
| 1089 struct sctp_event event; | |
| 1090 #else | |
| 1091 struct sctp_event_subscribe event; | |
| 1092 socklen_t eventsize; | |
| 1093 #endif | |
| 1094 /* If a message has been delayed until t
he socket | |
| 1095 * is dry, it can be sent now. | |
| 1096 */ | |
| 1097 if (data->saved_message.length > 0) | |
| 1098 { | |
| 1099 dgram_sctp_write(data->saved_mes
sage.bio, data->saved_message.data, | |
| 1100 data->saved_mes
sage.length); | |
| 1101 OPENSSL_free(data->saved_message
.data); | |
| 1102 data->saved_message.length = 0; | |
| 1103 } | |
| 1104 | |
| 1105 /* disable sender dry event */ | |
| 1106 #ifdef SCTP_EVENT | |
| 1107 memset(&event, 0, sizeof(struct sctp_eve
nt)); | |
| 1108 event.se_assoc_id = 0; | |
| 1109 event.se_type = SCTP_SENDER_DRY_EVENT; | |
| 1110 event.se_on = 0; | |
| 1111 i = setsockopt(b->num, IPPROTO_SCTP, SCT
P_EVENT, &event, sizeof(struct sctp_event)); | |
| 1112 OPENSSL_assert(i >= 0); | |
| 1113 #else | |
| 1114 eventsize = sizeof(struct sctp_event_sub
scribe); | |
| 1115 i = getsockopt(b->num, IPPROTO_SCTP, SCT
P_EVENTS, &event, &eventsize); | |
| 1116 OPENSSL_assert(i >= 0); | |
| 1117 | |
| 1118 event.sctp_sender_dry_event = 0; | |
| 1119 | |
| 1120 i = setsockopt(b->num, IPPROTO_SCTP, SCT
P_EVENTS, &event, sizeof(struct sctp_event_subscribe)); | |
| 1121 OPENSSL_assert(i >= 0); | |
| 1122 #endif | |
| 1123 } | |
| 1124 | |
| 1125 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 1126 if (snp->sn_header.sn_type == SCTP_AUTHENTICATIO
N_EVENT) | |
| 1127 dgram_sctp_handle_auth_free_key_event(b,
snp); | |
| 1128 #endif | |
| 1129 | |
| 1130 if (data->handle_notifications != NULL) | |
| 1131 data->handle_notifications(b, data->noti
fication_context, (void*) out); | |
| 1132 | |
| 1133 memset(out, 0, outl); | |
| 1134 } | |
| 1135 else | |
| 1136 ret += n; | |
| 1137 } | |
| 1138 while ((msg.msg_flags & MSG_NOTIFICATION) && (msg.msg_flags & MS
G_EOR) && (ret < outl)); | |
| 1139 | |
| 1140 if (ret > 0 && !(msg.msg_flags & MSG_EOR)) | |
| 1141 { | |
| 1142 /* Partial message read, this should never happen! */ | |
| 1143 | |
| 1144 /* The buffer was too small, this means the peer sent | |
| 1145 * a message that was larger than allowed. */ | |
| 1146 if (ret == outl) | |
| 1147 return -1; | |
| 1148 | |
| 1149 /* Test if socket buffer can handle max record | |
| 1150 * size (2^14 + 2048 + 13) | |
| 1151 */ | |
| 1152 optlen = (socklen_t) sizeof(int); | |
| 1153 ret = getsockopt(b->num, SOL_SOCKET, SO_RCVBUF, &optval,
&optlen); | |
| 1154 OPENSSL_assert(ret >= 0); | |
| 1155 OPENSSL_assert(optval >= 18445); | |
| 1156 | |
| 1157 /* Test if SCTP doesn't partially deliver below | |
| 1158 * max record size (2^14 + 2048 + 13) | |
| 1159 */ | |
| 1160 optlen = (socklen_t) sizeof(int); | |
| 1161 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_PARTIAL_DELI
VERY_POINT, | |
| 1162 &optval, &optlen); | |
| 1163 OPENSSL_assert(ret >= 0); | |
| 1164 OPENSSL_assert(optval >= 18445); | |
| 1165 | |
| 1166 /* Partially delivered notification??? Probably a bug...
. */ | |
| 1167 OPENSSL_assert(!(msg.msg_flags & MSG_NOTIFICATION)); | |
| 1168 | |
| 1169 /* Everything seems ok till now, so it's most likely | |
| 1170 * a message dropped by PR-SCTP. | |
| 1171 */ | |
| 1172 memset(out, 0, outl); | |
| 1173 BIO_set_retry_read(b); | |
| 1174 return -1; | |
| 1175 } | |
| 1176 | |
| 1177 BIO_clear_retry_flags(b); | |
| 1178 if (ret < 0) | |
| 1179 { | |
| 1180 if (BIO_dgram_should_retry(ret)) | |
| 1181 { | |
| 1182 BIO_set_retry_read(b); | |
| 1183 data->_errno = get_last_socket_error(); | |
| 1184 } | |
| 1185 } | |
| 1186 | |
| 1187 /* Test if peer uses SCTP-AUTH before continuing */ | |
| 1188 if (!data->peer_auth_tested) | |
| 1189 { | |
| 1190 int ii, auth_data = 0, auth_forward = 0; | |
| 1191 unsigned char *p; | |
| 1192 struct sctp_authchunks *authchunks; | |
| 1193 | |
| 1194 optlen = (socklen_t)(sizeof(sctp_assoc_t) + 256 * sizeof
(uint8_t)); | |
| 1195 authchunks = OPENSSL_malloc(optlen); | |
| 1196 memset(authchunks, 0, sizeof(optlen)); | |
| 1197 ii = getsockopt(b->num, IPPROTO_SCTP, SCTP_PEER_AUTH_CHU
NKS, authchunks, &optlen); | |
| 1198 OPENSSL_assert(ii >= 0); | |
| 1199 | |
| 1200 for (p = (unsigned char*) authchunks + sizeof(sctp_assoc
_t); | |
| 1201 p < (unsigned char*) authchunks + optlen; | |
| 1202 p += sizeof(uint8_t)) | |
| 1203 { | |
| 1204 if (*p == OPENSSL_SCTP_DATA_CHUNK_TYPE) auth_dat
a = 1; | |
| 1205 if (*p == OPENSSL_SCTP_FORWARD_CUM_TSN_CHUNK_TYP
E) auth_forward = 1; | |
| 1206 } | |
| 1207 | |
| 1208 OPENSSL_free(authchunks); | |
| 1209 | |
| 1210 if (!auth_data || !auth_forward) | |
| 1211 { | |
| 1212 BIOerr(BIO_F_DGRAM_SCTP_READ,BIO_R_CONNECT_ERROR
); | |
| 1213 return -1; | |
| 1214 } | |
| 1215 | |
| 1216 data->peer_auth_tested = 1; | |
| 1217 } | |
| 1218 } | |
| 1219 return(ret); | |
| 1220 } | |
| 1221 | |
| 1222 static int dgram_sctp_write(BIO *b, const char *in, int inl) | |
| 1223 { | |
| 1224 int ret; | |
| 1225 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr; | |
| 1226 struct bio_dgram_sctp_sndinfo *sinfo = &(data->sndinfo); | |
| 1227 struct bio_dgram_sctp_prinfo *pinfo = &(data->prinfo); | |
| 1228 struct bio_dgram_sctp_sndinfo handshake_sinfo; | |
| 1229 struct iovec iov[1]; | |
| 1230 struct msghdr msg; | |
| 1231 struct cmsghdr *cmsg; | |
| 1232 #if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO) | |
| 1233 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)) + CMSG_SPACE(sizeof
(struct sctp_prinfo))]; | |
| 1234 struct sctp_sndinfo *sndinfo; | |
| 1235 struct sctp_prinfo *prinfo; | |
| 1236 #else | |
| 1237 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))]; | |
| 1238 struct sctp_sndrcvinfo *sndrcvinfo; | |
| 1239 #endif | |
| 1240 | |
| 1241 clear_socket_error(); | |
| 1242 | |
| 1243 /* If we're send anything else than application data, | |
| 1244 * disable all user parameters and flags. | |
| 1245 */ | |
| 1246 if (in[0] != 23) { | |
| 1247 memset(&handshake_sinfo, 0x00, sizeof(struct bio_dgram_sctp_sndi
nfo)); | |
| 1248 #ifdef SCTP_SACK_IMMEDIATELY | |
| 1249 handshake_sinfo.snd_flags = SCTP_SACK_IMMEDIATELY; | |
| 1250 #endif | |
| 1251 sinfo = &handshake_sinfo; | |
| 1252 } | |
| 1253 | |
| 1254 /* If we have to send a shutdown alert message and the | |
| 1255 * socket is not dry yet, we have to save it and send it | |
| 1256 * as soon as the socket gets dry. | |
| 1257 */ | |
| 1258 if (data->save_shutdown && !BIO_dgram_sctp_wait_for_dry(b)) | |
| 1259 { | |
| 1260 data->saved_message.bio = b; | |
| 1261 data->saved_message.length = inl; | |
| 1262 data->saved_message.data = OPENSSL_malloc(inl); | |
| 1263 memcpy(data->saved_message.data, in, inl); | |
| 1264 return inl; | |
| 1265 } | |
| 1266 | |
| 1267 iov[0].iov_base = (char *)in; | |
| 1268 iov[0].iov_len = inl; | |
| 1269 msg.msg_name = NULL; | |
| 1270 msg.msg_namelen = 0; | |
| 1271 msg.msg_iov = iov; | |
| 1272 msg.msg_iovlen = 1; | |
| 1273 msg.msg_control = (caddr_t)cmsgbuf; | |
| 1274 msg.msg_controllen = 0; | |
| 1275 msg.msg_flags = 0; | |
| 1276 #if defined(SCTP_SNDINFO) && defined(SCTP_PRINFO) | |
| 1277 cmsg = (struct cmsghdr *)cmsgbuf; | |
| 1278 cmsg->cmsg_level = IPPROTO_SCTP; | |
| 1279 cmsg->cmsg_type = SCTP_SNDINFO; | |
| 1280 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); | |
| 1281 sndinfo = (struct sctp_sndinfo *)CMSG_DATA(cmsg); | |
| 1282 memset(sndinfo, 0, sizeof(struct sctp_sndinfo)); | |
| 1283 sndinfo->snd_sid = sinfo->snd_sid; | |
| 1284 sndinfo->snd_flags = sinfo->snd_flags; | |
| 1285 sndinfo->snd_ppid = sinfo->snd_ppid; | |
| 1286 sndinfo->snd_context = sinfo->snd_context; | |
| 1287 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); | |
| 1288 | |
| 1289 cmsg = (struct cmsghdr *)&cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndinfo)
)]; | |
| 1290 cmsg->cmsg_level = IPPROTO_SCTP; | |
| 1291 cmsg->cmsg_type = SCTP_PRINFO; | |
| 1292 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); | |
| 1293 prinfo = (struct sctp_prinfo *)CMSG_DATA(cmsg); | |
| 1294 memset(prinfo, 0, sizeof(struct sctp_prinfo)); | |
| 1295 prinfo->pr_policy = pinfo->pr_policy; | |
| 1296 prinfo->pr_value = pinfo->pr_value; | |
| 1297 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); | |
| 1298 #else | |
| 1299 cmsg = (struct cmsghdr *)cmsgbuf; | |
| 1300 cmsg->cmsg_level = IPPROTO_SCTP; | |
| 1301 cmsg->cmsg_type = SCTP_SNDRCV; | |
| 1302 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); | |
| 1303 sndrcvinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); | |
| 1304 memset(sndrcvinfo, 0, sizeof(struct sctp_sndrcvinfo)); | |
| 1305 sndrcvinfo->sinfo_stream = sinfo->snd_sid; | |
| 1306 sndrcvinfo->sinfo_flags = sinfo->snd_flags; | |
| 1307 #ifdef __FreeBSD__ | |
| 1308 sndrcvinfo->sinfo_flags |= pinfo->pr_policy; | |
| 1309 #endif | |
| 1310 sndrcvinfo->sinfo_ppid = sinfo->snd_ppid; | |
| 1311 sndrcvinfo->sinfo_context = sinfo->snd_context; | |
| 1312 sndrcvinfo->sinfo_timetolive = pinfo->pr_value; | |
| 1313 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo)); | |
| 1314 #endif | |
| 1315 | |
| 1316 ret = sendmsg(b->num, &msg, 0); | |
| 1317 | |
| 1318 BIO_clear_retry_flags(b); | |
| 1319 if (ret <= 0) | |
| 1320 { | |
| 1321 if (BIO_dgram_should_retry(ret)) | |
| 1322 { | |
| 1323 BIO_set_retry_write(b); | |
| 1324 data->_errno = get_last_socket_error(); | |
| 1325 } | |
| 1326 } | |
| 1327 return(ret); | |
| 1328 } | |
| 1329 | |
| 1330 static long dgram_sctp_ctrl(BIO *b, int cmd, long num, void *ptr) | |
| 1331 { | |
| 1332 long ret=1; | |
| 1333 bio_dgram_sctp_data *data = NULL; | |
| 1334 socklen_t sockopt_len = 0; | |
| 1335 struct sctp_authkeyid authkeyid; | |
| 1336 struct sctp_authkey *authkey; | |
| 1337 | |
| 1338 data = (bio_dgram_sctp_data *)b->ptr; | |
| 1339 | |
| 1340 switch (cmd) | |
| 1341 { | |
| 1342 case BIO_CTRL_DGRAM_QUERY_MTU: | |
| 1343 /* Set to maximum (2^14) | |
| 1344 * and ignore user input to enable transport | |
| 1345 * protocol fragmentation. | |
| 1346 * Returns always 2^14. | |
| 1347 */ | |
| 1348 data->mtu = 16384; | |
| 1349 ret = data->mtu; | |
| 1350 break; | |
| 1351 case BIO_CTRL_DGRAM_SET_MTU: | |
| 1352 /* Set to maximum (2^14) | |
| 1353 * and ignore input to enable transport | |
| 1354 * protocol fragmentation. | |
| 1355 * Returns always 2^14. | |
| 1356 */ | |
| 1357 data->mtu = 16384; | |
| 1358 ret = data->mtu; | |
| 1359 break; | |
| 1360 case BIO_CTRL_DGRAM_SET_CONNECTED: | |
| 1361 case BIO_CTRL_DGRAM_CONNECT: | |
| 1362 /* Returns always -1. */ | |
| 1363 ret = -1; | |
| 1364 break; | |
| 1365 case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT: | |
| 1366 /* SCTP doesn't need the DTLS timer | |
| 1367 * Returns always 1. | |
| 1368 */ | |
| 1369 break; | |
| 1370 case BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE: | |
| 1371 if (num > 0) | |
| 1372 data->in_handshake = 1; | |
| 1373 else | |
| 1374 data->in_handshake = 0; | |
| 1375 | |
| 1376 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_NODELAY, &data->in_h
andshake, sizeof(int)); | |
| 1377 break; | |
| 1378 case BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY: | |
| 1379 /* New shared key for SCTP AUTH. | |
| 1380 * Returns 0 on success, -1 otherwise. | |
| 1381 */ | |
| 1382 | |
| 1383 /* Get active key */ | |
| 1384 sockopt_len = sizeof(struct sctp_authkeyid); | |
| 1385 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &au
thkeyid, &sockopt_len); | |
| 1386 if (ret < 0) break; | |
| 1387 | |
| 1388 /* Add new key */ | |
| 1389 sockopt_len = sizeof(struct sctp_authkey) + 64 * sizeof(uint8_t)
; | |
| 1390 authkey = OPENSSL_malloc(sockopt_len); | |
| 1391 memset(authkey, 0x00, sockopt_len); | |
| 1392 authkey->sca_keynumber = authkeyid.scact_keynumber + 1; | |
| 1393 #ifndef __FreeBSD__ | |
| 1394 /* This field is missing in FreeBSD 8.2 and earlier, | |
| 1395 * and FreeBSD 8.3 and higher work without it. | |
| 1396 */ | |
| 1397 authkey->sca_keylength = 64; | |
| 1398 #endif | |
| 1399 memcpy(&authkey->sca_key[0], ptr, 64 * sizeof(uint8_t)); | |
| 1400 | |
| 1401 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_KEY, authkey, s
ockopt_len); | |
| 1402 if (ret < 0) break; | |
| 1403 | |
| 1404 /* Reset active key */ | |
| 1405 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
| 1406 &authkeyid, sizeof(struct sctp_authkeyid)); | |
| 1407 if (ret < 0) break; | |
| 1408 | |
| 1409 break; | |
| 1410 case BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY: | |
| 1411 /* Returns 0 on success, -1 otherwise. */ | |
| 1412 | |
| 1413 /* Get active key */ | |
| 1414 sockopt_len = sizeof(struct sctp_authkeyid); | |
| 1415 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, &au
thkeyid, &sockopt_len); | |
| 1416 if (ret < 0) break; | |
| 1417 | |
| 1418 /* Set active key */ | |
| 1419 authkeyid.scact_keynumber = authkeyid.scact_keynumber + 1; | |
| 1420 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_KEY, | |
| 1421 &authkeyid, sizeof(struct sctp_authkeyid)); | |
| 1422 if (ret < 0) break; | |
| 1423 | |
| 1424 /* CCS has been sent, so remember that and fall through | |
| 1425 * to check if we need to deactivate an old key | |
| 1426 */ | |
| 1427 data->ccs_sent = 1; | |
| 1428 | |
| 1429 case BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD: | |
| 1430 /* Returns 0 on success, -1 otherwise. */ | |
| 1431 | |
| 1432 /* Has this command really been called or is this just a fall-th
rough? */ | |
| 1433 if (cmd == BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD) | |
| 1434 data->ccs_rcvd = 1; | |
| 1435 | |
| 1436 /* CSS has been both, received and sent, so deactivate an old ke
y */ | |
| 1437 if (data->ccs_rcvd == 1 && data->ccs_sent == 1) | |
| 1438 { | |
| 1439 /* Get active key */ | |
| 1440 sockopt_len = sizeof(struct sctp_authkeyid); | |
| 1441 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_ACTIVE_
KEY, &authkeyid, &sockopt_len); | |
| 1442 if (ret < 0) break; | |
| 1443 | |
| 1444 /* Deactivate key or delete second last key if | |
| 1445 * SCTP_AUTHENTICATION_EVENT is not available. | |
| 1446 */ | |
| 1447 authkeyid.scact_keynumber = authkeyid.scact_keynumber -
1; | |
| 1448 #ifdef SCTP_AUTH_DEACTIVATE_KEY | |
| 1449 sockopt_len = sizeof(struct sctp_authkeyid); | |
| 1450 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH_DEACTIV
ATE_KEY, | |
| 1451 &authkeyid, sockopt_len); | |
| 1452 if (ret < 0) break; | |
| 1453 #endif | |
| 1454 #ifndef SCTP_AUTHENTICATION_EVENT | |
| 1455 if (authkeyid.scact_keynumber > 0) | |
| 1456 { | |
| 1457 authkeyid.scact_keynumber = authkeyid.scact_keyn
umber - 1; | |
| 1458 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_AUTH
_DELETE_KEY, | |
| 1459 &authkeyid, sizeof(struct sctp_authkey
id)); | |
| 1460 if (ret < 0) break; | |
| 1461 } | |
| 1462 #endif | |
| 1463 | |
| 1464 data->ccs_rcvd = 0; | |
| 1465 data->ccs_sent = 0; | |
| 1466 } | |
| 1467 break; | |
| 1468 case BIO_CTRL_DGRAM_SCTP_GET_SNDINFO: | |
| 1469 /* Returns the size of the copied struct. */ | |
| 1470 if (num > (long) sizeof(struct bio_dgram_sctp_sndinfo)) | |
| 1471 num = sizeof(struct bio_dgram_sctp_sndinfo); | |
| 1472 | |
| 1473 memcpy(ptr, &(data->sndinfo), num); | |
| 1474 ret = num; | |
| 1475 break; | |
| 1476 case BIO_CTRL_DGRAM_SCTP_SET_SNDINFO: | |
| 1477 /* Returns the size of the copied struct. */ | |
| 1478 if (num > (long) sizeof(struct bio_dgram_sctp_sndinfo)) | |
| 1479 num = sizeof(struct bio_dgram_sctp_sndinfo); | |
| 1480 | |
| 1481 memcpy(&(data->sndinfo), ptr, num); | |
| 1482 break; | |
| 1483 case BIO_CTRL_DGRAM_SCTP_GET_RCVINFO: | |
| 1484 /* Returns the size of the copied struct. */ | |
| 1485 if (num > (long) sizeof(struct bio_dgram_sctp_rcvinfo)) | |
| 1486 num = sizeof(struct bio_dgram_sctp_rcvinfo); | |
| 1487 | |
| 1488 memcpy(ptr, &data->rcvinfo, num); | |
| 1489 | |
| 1490 ret = num; | |
| 1491 break; | |
| 1492 case BIO_CTRL_DGRAM_SCTP_SET_RCVINFO: | |
| 1493 /* Returns the size of the copied struct. */ | |
| 1494 if (num > (long) sizeof(struct bio_dgram_sctp_rcvinfo)) | |
| 1495 num = sizeof(struct bio_dgram_sctp_rcvinfo); | |
| 1496 | |
| 1497 memcpy(&(data->rcvinfo), ptr, num); | |
| 1498 break; | |
| 1499 case BIO_CTRL_DGRAM_SCTP_GET_PRINFO: | |
| 1500 /* Returns the size of the copied struct. */ | |
| 1501 if (num > (long) sizeof(struct bio_dgram_sctp_prinfo)) | |
| 1502 num = sizeof(struct bio_dgram_sctp_prinfo); | |
| 1503 | |
| 1504 memcpy(ptr, &(data->prinfo), num); | |
| 1505 ret = num; | |
| 1506 break; | |
| 1507 case BIO_CTRL_DGRAM_SCTP_SET_PRINFO: | |
| 1508 /* Returns the size of the copied struct. */ | |
| 1509 if (num > (long) sizeof(struct bio_dgram_sctp_prinfo)) | |
| 1510 num = sizeof(struct bio_dgram_sctp_prinfo); | |
| 1511 | |
| 1512 memcpy(&(data->prinfo), ptr, num); | |
| 1513 break; | |
| 1514 case BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN: | |
| 1515 /* Returns always 1. */ | |
| 1516 if (num > 0) | |
| 1517 data->save_shutdown = 1; | |
| 1518 else | |
| 1519 data->save_shutdown = 0; | |
| 1520 break; | |
| 1521 | |
| 1522 default: | |
| 1523 /* Pass to default ctrl function to | |
| 1524 * process SCTP unspecific commands | |
| 1525 */ | |
| 1526 ret=dgram_ctrl(b, cmd, num, ptr); | |
| 1527 break; | |
| 1528 } | |
| 1529 return(ret); | |
| 1530 } | |
| 1531 | |
| 1532 int BIO_dgram_sctp_notification_cb(BIO *b, | |
| 1533 void (*handle_notifications)(BIO *bio, void *
context, void *buf), | |
| 1534 void *context) | |
| 1535 { | |
| 1536 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *) b->ptr; | |
| 1537 | |
| 1538 if (handle_notifications != NULL) | |
| 1539 { | |
| 1540 data->handle_notifications = handle_notifications; | |
| 1541 data->notification_context = context; | |
| 1542 } | |
| 1543 else | |
| 1544 return -1; | |
| 1545 | |
| 1546 return 0; | |
| 1547 } | |
| 1548 | |
| 1549 int BIO_dgram_sctp_wait_for_dry(BIO *b) | |
| 1550 { | |
| 1551 int is_dry = 0; | |
| 1552 int n, sockflags, ret; | |
| 1553 union sctp_notification snp; | |
| 1554 struct msghdr msg; | |
| 1555 struct iovec iov; | |
| 1556 #ifdef SCTP_EVENT | |
| 1557 struct sctp_event event; | |
| 1558 #else | |
| 1559 struct sctp_event_subscribe event; | |
| 1560 socklen_t eventsize; | |
| 1561 #endif | |
| 1562 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr; | |
| 1563 | |
| 1564 /* set sender dry event */ | |
| 1565 #ifdef SCTP_EVENT | |
| 1566 memset(&event, 0, sizeof(struct sctp_event)); | |
| 1567 event.se_assoc_id = 0; | |
| 1568 event.se_type = SCTP_SENDER_DRY_EVENT; | |
| 1569 event.se_on = 1; | |
| 1570 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct
sctp_event)); | |
| 1571 #else | |
| 1572 eventsize = sizeof(struct sctp_event_subscribe); | |
| 1573 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, &eventsize); | |
| 1574 if (ret < 0) | |
| 1575 return -1; | |
| 1576 | |
| 1577 event.sctp_sender_dry_event = 1; | |
| 1578 | |
| 1579 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &event, sizeof(struc
t sctp_event_subscribe)); | |
| 1580 #endif | |
| 1581 if (ret < 0) | |
| 1582 return -1; | |
| 1583 | |
| 1584 /* peek for notification */ | |
| 1585 memset(&snp, 0x00, sizeof(union sctp_notification)); | |
| 1586 iov.iov_base = (char *)&snp; | |
| 1587 iov.iov_len = sizeof(union sctp_notification); | |
| 1588 msg.msg_name = NULL; | |
| 1589 msg.msg_namelen = 0; | |
| 1590 msg.msg_iov = &iov; | |
| 1591 msg.msg_iovlen = 1; | |
| 1592 msg.msg_control = NULL; | |
| 1593 msg.msg_controllen = 0; | |
| 1594 msg.msg_flags = 0; | |
| 1595 | |
| 1596 n = recvmsg(b->num, &msg, MSG_PEEK); | |
| 1597 if (n <= 0) | |
| 1598 { | |
| 1599 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (get_last_
socket_error() != EWOULDBLOCK)) | |
| 1600 return -1; | |
| 1601 else | |
| 1602 return 0; | |
| 1603 } | |
| 1604 | |
| 1605 /* if we find a notification, process it and try again if necessary */ | |
| 1606 while (msg.msg_flags & MSG_NOTIFICATION) | |
| 1607 { | |
| 1608 memset(&snp, 0x00, sizeof(union sctp_notification)); | |
| 1609 iov.iov_base = (char *)&snp; | |
| 1610 iov.iov_len = sizeof(union sctp_notification); | |
| 1611 msg.msg_name = NULL; | |
| 1612 msg.msg_namelen = 0; | |
| 1613 msg.msg_iov = &iov; | |
| 1614 msg.msg_iovlen = 1; | |
| 1615 msg.msg_control = NULL; | |
| 1616 msg.msg_controllen = 0; | |
| 1617 msg.msg_flags = 0; | |
| 1618 | |
| 1619 n = recvmsg(b->num, &msg, 0); | |
| 1620 if (n <= 0) | |
| 1621 { | |
| 1622 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (g
et_last_socket_error() != EWOULDBLOCK)) | |
| 1623 return -1; | |
| 1624 else | |
| 1625 return is_dry; | |
| 1626 } | |
| 1627 | |
| 1628 if (snp.sn_header.sn_type == SCTP_SENDER_DRY_EVENT) | |
| 1629 { | |
| 1630 is_dry = 1; | |
| 1631 | |
| 1632 /* disable sender dry event */ | |
| 1633 #ifdef SCTP_EVENT | |
| 1634 memset(&event, 0, sizeof(struct sctp_event)); | |
| 1635 event.se_assoc_id = 0; | |
| 1636 event.se_type = SCTP_SENDER_DRY_EVENT; | |
| 1637 event.se_on = 0; | |
| 1638 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENT, &even
t, sizeof(struct sctp_event)); | |
| 1639 #else | |
| 1640 eventsize = (socklen_t) sizeof(struct sctp_event_subscri
be); | |
| 1641 ret = getsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &eve
nt, &eventsize); | |
| 1642 if (ret < 0) | |
| 1643 return -1; | |
| 1644 | |
| 1645 event.sctp_sender_dry_event = 0; | |
| 1646 | |
| 1647 ret = setsockopt(b->num, IPPROTO_SCTP, SCTP_EVENTS, &eve
nt, sizeof(struct sctp_event_subscribe)); | |
| 1648 #endif | |
| 1649 if (ret < 0) | |
| 1650 return -1; | |
| 1651 } | |
| 1652 | |
| 1653 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 1654 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
| 1655 dgram_sctp_handle_auth_free_key_event(b, &snp); | |
| 1656 #endif | |
| 1657 | |
| 1658 if (data->handle_notifications != NULL) | |
| 1659 data->handle_notifications(b, data->notification_context
, (void*) &snp); | |
| 1660 | |
| 1661 /* found notification, peek again */ | |
| 1662 memset(&snp, 0x00, sizeof(union sctp_notification)); | |
| 1663 iov.iov_base = (char *)&snp; | |
| 1664 iov.iov_len = sizeof(union sctp_notification); | |
| 1665 msg.msg_name = NULL; | |
| 1666 msg.msg_namelen = 0; | |
| 1667 msg.msg_iov = &iov; | |
| 1668 msg.msg_iovlen = 1; | |
| 1669 msg.msg_control = NULL; | |
| 1670 msg.msg_controllen = 0; | |
| 1671 msg.msg_flags = 0; | |
| 1672 | |
| 1673 /* if we have seen the dry already, don't wait */ | |
| 1674 if (is_dry) | |
| 1675 { | |
| 1676 sockflags = fcntl(b->num, F_GETFL, 0); | |
| 1677 fcntl(b->num, F_SETFL, O_NONBLOCK); | |
| 1678 } | |
| 1679 | |
| 1680 n = recvmsg(b->num, &msg, MSG_PEEK); | |
| 1681 | |
| 1682 if (is_dry) | |
| 1683 { | |
| 1684 fcntl(b->num, F_SETFL, sockflags); | |
| 1685 } | |
| 1686 | |
| 1687 if (n <= 0) | |
| 1688 { | |
| 1689 if ((n < 0) && (get_last_socket_error() != EAGAIN) && (g
et_last_socket_error() != EWOULDBLOCK)) | |
| 1690 return -1; | |
| 1691 else | |
| 1692 return is_dry; | |
| 1693 } | |
| 1694 } | |
| 1695 | |
| 1696 /* read anything else */ | |
| 1697 return is_dry; | |
| 1698 } | |
| 1699 | |
| 1700 int BIO_dgram_sctp_msg_waiting(BIO *b) | |
| 1701 { | |
| 1702 int n, sockflags; | |
| 1703 union sctp_notification snp; | |
| 1704 struct msghdr msg; | |
| 1705 struct iovec iov; | |
| 1706 bio_dgram_sctp_data *data = (bio_dgram_sctp_data *)b->ptr; | |
| 1707 | |
| 1708 /* Check if there are any messages waiting to be read */ | |
| 1709 do | |
| 1710 { | |
| 1711 memset(&snp, 0x00, sizeof(union sctp_notification)); | |
| 1712 iov.iov_base = (char *)&snp; | |
| 1713 iov.iov_len = sizeof(union sctp_notification); | |
| 1714 msg.msg_name = NULL; | |
| 1715 msg.msg_namelen = 0; | |
| 1716 msg.msg_iov = &iov; | |
| 1717 msg.msg_iovlen = 1; | |
| 1718 msg.msg_control = NULL; | |
| 1719 msg.msg_controllen = 0; | |
| 1720 msg.msg_flags = 0; | |
| 1721 | |
| 1722 sockflags = fcntl(b->num, F_GETFL, 0); | |
| 1723 fcntl(b->num, F_SETFL, O_NONBLOCK); | |
| 1724 n = recvmsg(b->num, &msg, MSG_PEEK); | |
| 1725 fcntl(b->num, F_SETFL, sockflags); | |
| 1726 | |
| 1727 /* if notification, process and try again */ | |
| 1728 if (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)) | |
| 1729 { | |
| 1730 #ifdef SCTP_AUTHENTICATION_EVENT | |
| 1731 if (snp.sn_header.sn_type == SCTP_AUTHENTICATION_EVENT) | |
| 1732 dgram_sctp_handle_auth_free_key_event(b, &snp); | |
| 1733 #endif | |
| 1734 | |
| 1735 memset(&snp, 0x00, sizeof(union sctp_notification)); | |
| 1736 iov.iov_base = (char *)&snp; | |
| 1737 iov.iov_len = sizeof(union sctp_notification); | |
| 1738 msg.msg_name = NULL; | |
| 1739 msg.msg_namelen = 0; | |
| 1740 msg.msg_iov = &iov; | |
| 1741 msg.msg_iovlen = 1; | |
| 1742 msg.msg_control = NULL; | |
| 1743 msg.msg_controllen = 0; | |
| 1744 msg.msg_flags = 0; | |
| 1745 n = recvmsg(b->num, &msg, 0); | |
| 1746 | |
| 1747 if (data->handle_notifications != NULL) | |
| 1748 data->handle_notifications(b, data->notification
_context, (void*) &snp); | |
| 1749 } | |
| 1750 | |
| 1751 } while (n > 0 && (msg.msg_flags & MSG_NOTIFICATION)); | |
| 1752 | |
| 1753 /* Return 1 if there is a message to be read, return 0 otherwise. */ | |
| 1754 if (n > 0) | |
| 1755 return 1; | |
| 1756 else | |
| 1757 return 0; | |
| 1758 } | |
| 1759 | |
| 1760 static int dgram_sctp_puts(BIO *bp, const char *str) | |
| 1761 { | |
| 1762 int n,ret; | |
| 1763 | |
| 1764 n=strlen(str); | |
| 1765 ret=dgram_sctp_write(bp,str,n); | |
| 1766 return(ret); | |
| 1767 } | |
| 1768 #endif | |
| 1769 | |
| 1770 static int BIO_dgram_should_retry(int i) | |
| 1771 { | |
| 1772 int err; | |
| 1773 | |
| 1774 if ((i == 0) || (i == -1)) | |
| 1775 { | |
| 1776 err=get_last_socket_error(); | |
| 1777 | |
| 1778 #if defined(OPENSSL_SYS_WINDOWS) | |
| 1779 /* If the socket return value (i) is -1 | |
| 1780 * and err is unexpectedly 0 at this point, | |
| 1781 * the error code was overwritten by | |
| 1782 * another system call before this error | |
| 1783 * handling is called. | |
| 1784 */ | |
| 1785 #endif | |
| 1786 | |
| 1787 return(BIO_dgram_non_fatal_error(err)); | |
| 1788 } | |
| 1789 return(0); | |
| 1790 } | |
| 1791 | |
| 1792 int BIO_dgram_non_fatal_error(int err) | |
| 1793 { | |
| 1794 switch (err) | |
| 1795 { | |
| 1796 #if defined(OPENSSL_SYS_WINDOWS) | |
| 1797 # if defined(WSAEWOULDBLOCK) | |
| 1798 case WSAEWOULDBLOCK: | |
| 1799 # endif | |
| 1800 | |
| 1801 # if 0 /* This appears to always be an error */ | |
| 1802 # if defined(WSAENOTCONN) | |
| 1803 case WSAENOTCONN: | |
| 1804 # endif | |
| 1805 # endif | |
| 1806 #endif | |
| 1807 | |
| 1808 #ifdef EWOULDBLOCK | |
| 1809 # ifdef WSAEWOULDBLOCK | |
| 1810 # if WSAEWOULDBLOCK != EWOULDBLOCK | |
| 1811 case EWOULDBLOCK: | |
| 1812 # endif | |
| 1813 # else | |
| 1814 case EWOULDBLOCK: | |
| 1815 # endif | |
| 1816 #endif | |
| 1817 | |
| 1818 #ifdef EINTR | |
| 1819 case EINTR: | |
| 1820 #endif | |
| 1821 | |
| 1822 #ifdef EAGAIN | |
| 1823 #if EWOULDBLOCK != EAGAIN | |
| 1824 case EAGAIN: | |
| 1825 # endif | |
| 1826 #endif | |
| 1827 | |
| 1828 #ifdef EPROTO | |
| 1829 case EPROTO: | |
| 1830 #endif | |
| 1831 | |
| 1832 #ifdef EINPROGRESS | |
| 1833 case EINPROGRESS: | |
| 1834 #endif | |
| 1835 | |
| 1836 #ifdef EALREADY | |
| 1837 case EALREADY: | |
| 1838 #endif | |
| 1839 | |
| 1840 return(1); | |
| 1841 /* break; */ | |
| 1842 default: | |
| 1843 break; | |
| 1844 } | |
| 1845 return(0); | |
| 1846 } | |
| 1847 | |
| 1848 static void get_current_time(struct timeval *t) | |
| 1849 { | |
| 1850 #ifdef OPENSSL_SYS_WIN32 | |
| 1851 struct _timeb tb; | |
| 1852 _ftime(&tb); | |
| 1853 t->tv_sec = (long)tb.time; | |
| 1854 t->tv_usec = (long)tb.millitm * 1000; | |
| 1855 #elif defined(OPENSSL_SYS_VMS) | |
| 1856 struct timeb tb; | |
| 1857 ftime(&tb); | |
| 1858 t->tv_sec = (long)tb.time; | |
| 1859 t->tv_usec = (long)tb.millitm * 1000; | |
| 1860 #else | |
| 1861 gettimeofday(t, NULL); | |
| 1862 #endif | |
| 1863 } | |
| 1864 | |
| 1865 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master