| File: | src/lib/libcrypto/bio/bss_dgram.c |
| Warning: | line 348, column 3 Value stored to 'num' is never read |
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| 1 | /* $OpenBSD: bss_dgram.c,v 1.45 2023/07/05 21:23:37 beck Exp $ */ |
| 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 | #include <sys/socket.h> |
| 61 | #include <sys/time.h> |
| 62 | |
| 63 | #include <netinet/in.h> |
| 64 | |
| 65 | #include <errno(*__errno()).h> |
| 66 | #include <netdb.h> |
| 67 | #include <stdio.h> |
| 68 | #include <string.h> |
| 69 | #include <unistd.h> |
| 70 | |
| 71 | #include <openssl/opensslconf.h> |
| 72 | |
| 73 | #include <openssl/bio.h> |
| 74 | |
| 75 | #include "bio_local.h" |
| 76 | |
| 77 | #ifndef OPENSSL_NO_DGRAM |
| 78 | |
| 79 | |
| 80 | static int dgram_write(BIO *h, const char *buf, int num); |
| 81 | static int dgram_read(BIO *h, char *buf, int size); |
| 82 | static int dgram_puts(BIO *h, const char *str); |
| 83 | static long dgram_ctrl(BIO *h, int cmd, long arg1, void *arg2); |
| 84 | static int dgram_new(BIO *h); |
| 85 | static int dgram_free(BIO *data); |
| 86 | static int dgram_clear(BIO *bio); |
| 87 | |
| 88 | |
| 89 | static int BIO_dgram_should_retry(int s); |
| 90 | |
| 91 | static const BIO_METHOD methods_dgramp = { |
| 92 | .type = BIO_TYPE_DGRAM(21|0x0400|0x0100), |
| 93 | .name = "datagram socket", |
| 94 | .bwrite = dgram_write, |
| 95 | .bread = dgram_read, |
| 96 | .bputs = dgram_puts, |
| 97 | .ctrl = dgram_ctrl, |
| 98 | .create = dgram_new, |
| 99 | .destroy = dgram_free |
| 100 | }; |
| 101 | |
| 102 | |
| 103 | typedef struct bio_dgram_data_st { |
| 104 | union { |
| 105 | struct sockaddr sa; |
| 106 | struct sockaddr_in sa_in; |
| 107 | struct sockaddr_in6 sa_in6; |
| 108 | } peer; |
| 109 | unsigned int connected; |
| 110 | unsigned int _errno; |
| 111 | unsigned int mtu; |
| 112 | struct timeval next_timeout; |
| 113 | struct timeval socket_timeout; |
| 114 | } bio_dgram_data; |
| 115 | |
| 116 | |
| 117 | const BIO_METHOD * |
| 118 | BIO_s_datagram(void) |
| 119 | { |
| 120 | return (&methods_dgramp); |
| 121 | } |
| 122 | LCRYPTO_ALIAS(BIO_s_datagram)asm(""); |
| 123 | |
| 124 | BIO * |
| 125 | BIO_new_dgram(int fd, int close_flag) |
| 126 | { |
| 127 | BIO *ret; |
| 128 | |
| 129 | ret = BIO_new(BIO_s_datagram()); |
| 130 | if (ret == NULL((void *)0)) |
| 131 | return (NULL((void *)0)); |
| 132 | BIO_set_fd(ret, fd, close_flag)BIO_int_ctrl(ret,104,close_flag,fd); |
| 133 | return (ret); |
| 134 | } |
| 135 | LCRYPTO_ALIAS(BIO_new_dgram)asm(""); |
| 136 | |
| 137 | static int |
| 138 | dgram_new(BIO *bi) |
| 139 | { |
| 140 | bio_dgram_data *data = NULL((void *)0); |
| 141 | |
| 142 | bi->init = 0; |
| 143 | bi->num = 0; |
| 144 | data = calloc(1, sizeof(bio_dgram_data)); |
| 145 | if (data == NULL((void *)0)) |
| 146 | return 0; |
| 147 | bi->ptr = data; |
| 148 | |
| 149 | bi->flags = 0; |
| 150 | return (1); |
| 151 | } |
| 152 | |
| 153 | static int |
| 154 | dgram_free(BIO *a) |
| 155 | { |
| 156 | bio_dgram_data *data; |
| 157 | |
| 158 | if (a == NULL((void *)0)) |
| 159 | return (0); |
| 160 | if (!dgram_clear(a)) |
| 161 | return 0; |
| 162 | |
| 163 | data = (bio_dgram_data *)a->ptr; |
| 164 | free(data); |
| 165 | |
| 166 | return (1); |
| 167 | } |
| 168 | |
| 169 | static int |
| 170 | dgram_clear(BIO *a) |
| 171 | { |
| 172 | if (a == NULL((void *)0)) |
| 173 | return (0); |
| 174 | if (a->shutdown) { |
| 175 | if (a->init) { |
| 176 | shutdown(a->num, SHUT_RDWR2); |
| 177 | close(a->num); |
| 178 | } |
| 179 | a->init = 0; |
| 180 | a->flags = 0; |
| 181 | } |
| 182 | return (1); |
| 183 | } |
| 184 | |
| 185 | static void |
| 186 | dgram_adjust_rcv_timeout(BIO *b) |
| 187 | { |
| 188 | #if defined(SO_RCVTIMEO0x1006) |
| 189 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; |
| 190 | |
| 191 | /* Is a timer active? */ |
| 192 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) { |
| 193 | struct timeval timenow, timeleft; |
| 194 | |
| 195 | /* Read current socket timeout */ |
| 196 | socklen_t sz = sizeof(data->socket_timeout); |
| 197 | if (getsockopt(b->num, SOL_SOCKET0xffff, SO_RCVTIMEO0x1006, |
| 198 | &(data->socket_timeout), &sz) < 0) { |
| 199 | perror("getsockopt"); |
| 200 | } |
| 201 | |
| 202 | /* Get current time */ |
| 203 | gettimeofday(&timenow, NULL((void *)0)); |
| 204 | |
| 205 | /* Calculate time left until timer expires */ |
| 206 | memcpy(&timeleft, &(data->next_timeout), sizeof(struct timeval)); |
| 207 | timeleft.tv_sec -= timenow.tv_sec; |
| 208 | timeleft.tv_usec -= timenow.tv_usec; |
| 209 | if (timeleft.tv_usec < 0) { |
| 210 | timeleft.tv_sec--; |
| 211 | timeleft.tv_usec += 1000000; |
| 212 | } |
| 213 | |
| 214 | if (timeleft.tv_sec < 0) { |
| 215 | timeleft.tv_sec = 0; |
| 216 | timeleft.tv_usec = 1; |
| 217 | } |
| 218 | |
| 219 | /* Adjust socket timeout if next handshake message timer |
| 220 | * will expire earlier. |
| 221 | */ |
| 222 | if ((data->socket_timeout.tv_sec == 0 && |
| 223 | data->socket_timeout.tv_usec == 0) || |
| 224 | (data->socket_timeout.tv_sec > timeleft.tv_sec) || |
| 225 | (data->socket_timeout.tv_sec == timeleft.tv_sec && |
| 226 | data->socket_timeout.tv_usec >= timeleft.tv_usec)) { |
| 227 | if (setsockopt(b->num, SOL_SOCKET0xffff, SO_RCVTIMEO0x1006, |
| 228 | &timeleft, sizeof(struct timeval)) < 0) { |
| 229 | perror("setsockopt"); |
| 230 | } |
| 231 | } |
| 232 | } |
| 233 | #endif |
| 234 | } |
| 235 | |
| 236 | static void |
| 237 | dgram_reset_rcv_timeout(BIO *b) |
| 238 | { |
| 239 | #if defined(SO_RCVTIMEO0x1006) |
| 240 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; |
| 241 | |
| 242 | /* Is a timer active? */ |
| 243 | if (data->next_timeout.tv_sec > 0 || data->next_timeout.tv_usec > 0) { |
| 244 | if (setsockopt(b->num, SOL_SOCKET0xffff, SO_RCVTIMEO0x1006, |
| 245 | &(data->socket_timeout), sizeof(struct timeval)) < 0) { |
| 246 | perror("setsockopt"); |
| 247 | } |
| 248 | } |
| 249 | #endif |
| 250 | } |
| 251 | |
| 252 | static int |
| 253 | dgram_read(BIO *b, char *out, int outl) |
| 254 | { |
| 255 | int ret = 0; |
| 256 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; |
| 257 | |
| 258 | struct { |
| 259 | socklen_t len; |
| 260 | union { |
| 261 | struct sockaddr sa; |
| 262 | struct sockaddr_in sa_in; |
| 263 | struct sockaddr_in6 sa_in6; |
| 264 | } peer; |
| 265 | } sa; |
| 266 | |
| 267 | sa.len = sizeof(sa.peer); |
| 268 | |
| 269 | if (out != NULL((void *)0)) { |
| 270 | errno(*__errno()) = 0; |
| 271 | memset(&sa.peer, 0, sizeof(sa.peer)); |
| 272 | dgram_adjust_rcv_timeout(b); |
| 273 | ret = recvfrom(b->num, out, outl, 0, &sa.peer.sa, &sa.len); |
| 274 | |
| 275 | if (! data->connected && ret >= 0) |
| 276 | BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER44, 0, &sa.peer); |
| 277 | |
| 278 | BIO_clear_retry_flags(b)BIO_clear_flags(b, ((0x01|0x02|0x04)|0x08)); |
| 279 | if (ret < 0) { |
| 280 | if (BIO_dgram_should_retry(ret)) { |
| 281 | BIO_set_retry_read(b)BIO_set_flags(b, (0x01|0x08)); |
| 282 | data->_errno = errno(*__errno()); |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | dgram_reset_rcv_timeout(b); |
| 287 | } |
| 288 | return (ret); |
| 289 | } |
| 290 | |
| 291 | static int |
| 292 | dgram_write(BIO *b, const char *in, int inl) |
| 293 | { |
| 294 | int ret; |
| 295 | bio_dgram_data *data = (bio_dgram_data *)b->ptr; |
| 296 | errno(*__errno()) = 0; |
| 297 | |
| 298 | if (data->connected) |
| 299 | ret = write(b->num, in, inl); |
| 300 | else { |
| 301 | int peerlen = sizeof(data->peer); |
| 302 | |
| 303 | if (data->peer.sa.sa_family == AF_INET2) |
| 304 | peerlen = sizeof(data->peer.sa_in); |
| 305 | else if (data->peer.sa.sa_family == AF_INET624) |
| 306 | peerlen = sizeof(data->peer.sa_in6); |
| 307 | ret = sendto(b->num, in, inl, 0, &data->peer.sa, peerlen); |
| 308 | } |
| 309 | |
| 310 | BIO_clear_retry_flags(b)BIO_clear_flags(b, ((0x01|0x02|0x04)|0x08)); |
| 311 | if (ret <= 0) { |
| 312 | if (BIO_dgram_should_retry(ret)) { |
| 313 | BIO_set_retry_write(b)BIO_set_flags(b, (0x02|0x08)); |
| 314 | |
| 315 | data->_errno = errno(*__errno()); |
| 316 | /* |
| 317 | * higher layers are responsible for querying MTU, |
| 318 | * if necessary |
| 319 | */ |
| 320 | } |
| 321 | } |
| 322 | return (ret); |
| 323 | } |
| 324 | |
| 325 | static long |
| 326 | dgram_ctrl(BIO *b, int cmd, long num, void *ptr) |
| 327 | { |
| 328 | long ret = 1; |
| 329 | int *ip; |
| 330 | struct sockaddr *to = NULL((void *)0); |
| 331 | bio_dgram_data *data = NULL((void *)0); |
| 332 | #if (defined(IP_MTU_DISCOVER) || defined(IP_MTU)) |
| 333 | int sockopt_val = 0; |
| 334 | socklen_t sockopt_len; /* assume that system supporting IP_MTU is |
| 335 | * modern enough to define socklen_t */ |
| 336 | socklen_t addr_len; |
| 337 | union { |
| 338 | struct sockaddr sa; |
| 339 | struct sockaddr_in s4; |
| 340 | struct sockaddr_in6 s6; |
| 341 | } addr; |
| 342 | #endif |
| 343 | |
| 344 | data = (bio_dgram_data *)b->ptr; |
| 345 | |
| 346 | switch (cmd) { |
| 347 | case BIO_CTRL_RESET1: |
| 348 | num = 0; |
Value stored to 'num' is never read | |
| 349 | case BIO_C_FILE_SEEK128: |
| 350 | ret = 0; |
| 351 | break; |
| 352 | case BIO_C_FILE_TELL133: |
| 353 | case BIO_CTRL_INFO3: |
| 354 | ret = 0; |
| 355 | break; |
| 356 | case BIO_C_SET_FD104: |
| 357 | dgram_clear(b); |
| 358 | b->num= *((int *)ptr); |
| 359 | b->shutdown = (int)num; |
| 360 | b->init = 1; |
| 361 | break; |
| 362 | case BIO_C_GET_FD105: |
| 363 | if (b->init) { |
| 364 | ip = (int *)ptr; |
| 365 | if (ip != NULL((void *)0)) |
| 366 | *ip = b->num; |
| 367 | ret = b->num; |
| 368 | } else |
| 369 | ret = -1; |
| 370 | break; |
| 371 | case BIO_CTRL_GET_CLOSE8: |
| 372 | ret = b->shutdown; |
| 373 | break; |
| 374 | case BIO_CTRL_SET_CLOSE9: |
| 375 | b->shutdown = (int)num; |
| 376 | break; |
| 377 | case BIO_CTRL_PENDING10: |
| 378 | case BIO_CTRL_WPENDING13: |
| 379 | ret = 0; |
| 380 | break; |
| 381 | case BIO_CTRL_DUP12: |
| 382 | case BIO_CTRL_FLUSH11: |
| 383 | ret = 1; |
| 384 | break; |
| 385 | case BIO_CTRL_DGRAM_CONNECT31: |
| 386 | to = (struct sockaddr *)ptr; |
| 387 | switch (to->sa_family) { |
| 388 | case AF_INET2: |
| 389 | memcpy(&data->peer, to, sizeof(data->peer.sa_in)); |
| 390 | break; |
| 391 | case AF_INET624: |
| 392 | memcpy(&data->peer, to, sizeof(data->peer.sa_in6)); |
| 393 | break; |
| 394 | default: |
| 395 | memcpy(&data->peer, to, sizeof(data->peer.sa)); |
| 396 | break; |
| 397 | } |
| 398 | break; |
| 399 | /* (Linux)kernel sets DF bit on outgoing IP packets */ |
| 400 | case BIO_CTRL_DGRAM_MTU_DISCOVER39: |
| 401 | #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) |
| 402 | addr_len = (socklen_t)sizeof(addr); |
| 403 | memset((void *)&addr, 0, sizeof(addr)); |
| 404 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) { |
| 405 | ret = 0; |
| 406 | break; |
| 407 | } |
| 408 | switch (addr.sa.sa_family) { |
| 409 | case AF_INET2: |
| 410 | sockopt_val = IP_PMTUDISC_DO; |
| 411 | ret = setsockopt(b->num, IPPROTO_IP0, IP_MTU_DISCOVER, |
| 412 | &sockopt_val, sizeof(sockopt_val)); |
| 413 | if (ret < 0) |
| 414 | perror("setsockopt"); |
| 415 | break; |
| 416 | #if defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) |
| 417 | case AF_INET624: |
| 418 | sockopt_val = IPV6_PMTUDISC_DO; |
| 419 | ret = setsockopt(b->num, IPPROTO_IPV641, |
| 420 | IPV6_MTU_DISCOVER, &sockopt_val, |
| 421 | sizeof(sockopt_val)); |
| 422 | if (ret < 0) |
| 423 | perror("setsockopt"); |
| 424 | break; |
| 425 | #endif |
| 426 | default: |
| 427 | ret = -1; |
| 428 | break; |
| 429 | } |
| 430 | #else |
| 431 | ret = -1; |
| 432 | #endif |
| 433 | break; |
| 434 | case BIO_CTRL_DGRAM_QUERY_MTU40: |
| 435 | #if defined(IP_MTU) |
| 436 | addr_len = (socklen_t)sizeof(addr); |
| 437 | memset((void *)&addr, 0, sizeof(addr)); |
| 438 | if (getsockname(b->num, &addr.sa, &addr_len) < 0) { |
| 439 | ret = 0; |
| 440 | break; |
| 441 | } |
| 442 | sockopt_len = sizeof(sockopt_val); |
| 443 | switch (addr.sa.sa_family) { |
| 444 | case AF_INET2: |
| 445 | ret = getsockopt(b->num, IPPROTO_IP0, IP_MTU, |
| 446 | &sockopt_val, &sockopt_len); |
| 447 | if (ret < 0 || sockopt_val < 0) { |
| 448 | ret = 0; |
| 449 | } else { |
| 450 | /* we assume that the transport protocol is UDP and no |
| 451 | * IP options are used. |
| 452 | */ |
| 453 | data->mtu = sockopt_val - 8 - 20; |
| 454 | ret = data->mtu; |
| 455 | } |
| 456 | break; |
| 457 | #if defined(IPV6_MTU) |
| 458 | case AF_INET624: |
| 459 | ret = getsockopt(b->num, IPPROTO_IPV641, IPV6_MTU, |
| 460 | &sockopt_val, &sockopt_len); |
| 461 | if (ret < 0 || sockopt_val < 0) { |
| 462 | ret = 0; |
| 463 | } else { |
| 464 | /* we assume that the transport protocol is UDP and no |
| 465 | * IPV6 options are used. |
| 466 | */ |
| 467 | data->mtu = sockopt_val - 8 - 40; |
| 468 | ret = data->mtu; |
| 469 | } |
| 470 | break; |
| 471 | #endif |
| 472 | default: |
| 473 | ret = 0; |
| 474 | break; |
| 475 | } |
| 476 | #else |
| 477 | ret = 0; |
| 478 | #endif |
| 479 | break; |
| 480 | case BIO_CTRL_DGRAM_GET_FALLBACK_MTU47: |
| 481 | switch (data->peer.sa.sa_family) { |
| 482 | case AF_INET2: |
| 483 | ret = 576 - 20 - 8; |
| 484 | break; |
| 485 | case AF_INET624: |
| 486 | #ifdef IN6_IS_ADDR_V4MAPPED |
| 487 | if (IN6_IS_ADDR_V4MAPPED(&data->peer.sa_in6.sin6_addr)((*(const u_int32_t *)(const void *)(&(&data->peer .sa_in6.sin6_addr)->__u6_addr.__u6_addr8[0]) == 0) && (*(const u_int32_t *)(const void *)(&(&data->peer .sa_in6.sin6_addr)->__u6_addr.__u6_addr8[4]) == 0) && (*(const u_int32_t *)(const void *)(&(&data->peer .sa_in6.sin6_addr)->__u6_addr.__u6_addr8[8]) == (__uint32_t )(__builtin_constant_p(0x0000ffff) ? (__uint32_t)(((__uint32_t )(0x0000ffff) & 0xff) << 24 | ((__uint32_t)(0x0000ffff ) & 0xff00) << 8 | ((__uint32_t)(0x0000ffff) & 0xff0000 ) >> 8 | ((__uint32_t)(0x0000ffff) & 0xff000000) >> 24) : __swap32md(0x0000ffff))))) |
| 488 | ret = 576 - 20 - 8; |
| 489 | else |
| 490 | #endif |
| 491 | ret = 1280 - 40 - 8; |
| 492 | break; |
| 493 | default: |
| 494 | ret = 576 - 20 - 8; |
| 495 | break; |
| 496 | } |
| 497 | break; |
| 498 | case BIO_CTRL_DGRAM_GET_MTU41: |
| 499 | return data->mtu; |
| 500 | break; |
| 501 | case BIO_CTRL_DGRAM_SET_MTU42: |
| 502 | data->mtu = num; |
| 503 | ret = num; |
| 504 | break; |
| 505 | case BIO_CTRL_DGRAM_SET_CONNECTED32: |
| 506 | to = (struct sockaddr *)ptr; |
| 507 | |
| 508 | if (to != NULL((void *)0)) { |
| 509 | data->connected = 1; |
| 510 | switch (to->sa_family) { |
| 511 | case AF_INET2: |
| 512 | memcpy(&data->peer, to, sizeof(data->peer.sa_in)); |
| 513 | break; |
| 514 | case AF_INET624: |
| 515 | memcpy(&data->peer, to, sizeof(data->peer.sa_in6)); |
| 516 | break; |
| 517 | default: |
| 518 | memcpy(&data->peer, to, sizeof(data->peer.sa)); |
| 519 | break; |
| 520 | } |
| 521 | } else { |
| 522 | data->connected = 0; |
| 523 | memset(&(data->peer), 0, sizeof(data->peer)); |
| 524 | } |
| 525 | break; |
| 526 | case BIO_CTRL_DGRAM_GET_PEER46: |
| 527 | switch (data->peer.sa.sa_family) { |
| 528 | case AF_INET2: |
| 529 | ret = sizeof(data->peer.sa_in); |
| 530 | break; |
| 531 | case AF_INET624: |
| 532 | ret = sizeof(data->peer.sa_in6); |
| 533 | break; |
| 534 | default: |
| 535 | ret = sizeof(data->peer.sa); |
| 536 | break; |
| 537 | } |
| 538 | if (num == 0 || num > ret) |
| 539 | num = ret; |
| 540 | memcpy(ptr, &data->peer, (ret = num)); |
| 541 | break; |
| 542 | case BIO_CTRL_DGRAM_SET_PEER44: |
| 543 | to = (struct sockaddr *) ptr; |
| 544 | switch (to->sa_family) { |
| 545 | case AF_INET2: |
| 546 | memcpy(&data->peer, to, sizeof(data->peer.sa_in)); |
| 547 | break; |
| 548 | case AF_INET624: |
| 549 | memcpy(&data->peer, to, sizeof(data->peer.sa_in6)); |
| 550 | break; |
| 551 | default: |
| 552 | memcpy(&data->peer, to, sizeof(data->peer.sa)); |
| 553 | break; |
| 554 | } |
| 555 | break; |
| 556 | case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT45: |
| 557 | memcpy(&(data->next_timeout), ptr, sizeof(struct timeval)); |
| 558 | break; |
| 559 | #if defined(SO_RCVTIMEO0x1006) |
| 560 | case BIO_CTRL_DGRAM_SET_RECV_TIMEOUT33: |
| 561 | if (setsockopt(b->num, SOL_SOCKET0xffff, SO_RCVTIMEO0x1006, ptr, |
| 562 | sizeof(struct timeval)) < 0) { |
| 563 | perror("setsockopt"); |
| 564 | ret = -1; |
| 565 | } |
| 566 | break; |
| 567 | case BIO_CTRL_DGRAM_GET_RECV_TIMEOUT34: |
| 568 | { |
| 569 | socklen_t sz = sizeof(struct timeval); |
| 570 | if (getsockopt(b->num, SOL_SOCKET0xffff, SO_RCVTIMEO0x1006, |
| 571 | ptr, &sz) < 0) { |
| 572 | perror("getsockopt"); |
| 573 | ret = -1; |
| 574 | } else |
| 575 | ret = sz; |
| 576 | } |
| 577 | break; |
| 578 | #endif |
| 579 | #if defined(SO_SNDTIMEO0x1005) |
| 580 | case BIO_CTRL_DGRAM_SET_SEND_TIMEOUT35: |
| 581 | if (setsockopt(b->num, SOL_SOCKET0xffff, SO_SNDTIMEO0x1005, ptr, |
| 582 | sizeof(struct timeval)) < 0) { |
| 583 | perror("setsockopt"); |
| 584 | ret = -1; |
| 585 | } |
| 586 | break; |
| 587 | case BIO_CTRL_DGRAM_GET_SEND_TIMEOUT36: |
| 588 | { |
| 589 | socklen_t sz = sizeof(struct timeval); |
| 590 | if (getsockopt(b->num, SOL_SOCKET0xffff, SO_SNDTIMEO0x1005, |
| 591 | ptr, &sz) < 0) { |
| 592 | perror("getsockopt"); |
| 593 | ret = -1; |
| 594 | } else |
| 595 | ret = sz; |
| 596 | } |
| 597 | break; |
| 598 | #endif |
| 599 | case BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP38: |
| 600 | /* fall-through */ |
| 601 | case BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP37: |
| 602 | if (data->_errno == EAGAIN35) { |
| 603 | ret = 1; |
| 604 | data->_errno = 0; |
| 605 | } else |
| 606 | ret = 0; |
| 607 | break; |
| 608 | #ifdef EMSGSIZE40 |
| 609 | case BIO_CTRL_DGRAM_MTU_EXCEEDED43: |
| 610 | if (data->_errno == EMSGSIZE40) { |
| 611 | ret = 1; |
| 612 | data->_errno = 0; |
| 613 | } else |
| 614 | ret = 0; |
| 615 | break; |
| 616 | #endif |
| 617 | default: |
| 618 | ret = 0; |
| 619 | break; |
| 620 | } |
| 621 | return (ret); |
| 622 | } |
| 623 | |
| 624 | static int |
| 625 | dgram_puts(BIO *bp, const char *str) |
| 626 | { |
| 627 | int n, ret; |
| 628 | |
| 629 | n = strlen(str); |
| 630 | ret = dgram_write(bp, str, n); |
| 631 | return (ret); |
| 632 | } |
| 633 | |
| 634 | |
| 635 | static int |
| 636 | BIO_dgram_should_retry(int i) |
| 637 | { |
| 638 | int err; |
| 639 | |
| 640 | if ((i == 0) || (i == -1)) { |
| 641 | err = errno(*__errno()); |
| 642 | return (BIO_dgram_non_fatal_error(err)); |
| 643 | } |
| 644 | return (0); |
| 645 | } |
| 646 | |
| 647 | int |
| 648 | BIO_dgram_non_fatal_error(int err) |
| 649 | { |
| 650 | switch (err) { |
| 651 | case EINTR4: |
| 652 | case EAGAIN35: |
| 653 | case EINPROGRESS36: |
| 654 | case EALREADY37: |
| 655 | return (1); |
| 656 | default: |
| 657 | break; |
| 658 | } |
| 659 | return (0); |
| 660 | } |
| 661 | LCRYPTO_ALIAS(BIO_dgram_non_fatal_error)asm(""); |
| 662 | |
| 663 | #endif |