sctp_sys_calls.c revision 165242
1/* $KAME: sctp_sys_calls.c,v 1.9 2004/08/17 06:08:53 itojun Exp $ */ 2 3/* 4 * Copyright (C) 2002-2006 Cisco Systems Inc, 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: head/lib/libc/net/sctp_sys_calls.c 165242 2006-12-15 12:01:50Z rrs $"); 33#include <stdio.h> 34#include <string.h> 35#include <errno.h> 36#include <stdlib.h> 37#include <unistd.h> 38#include <sys/types.h> 39#include <sys/socket.h> 40#include <sys/errno.h> 41#include <sys/syscall.h> 42#include <sys/uio.h> 43#include <netinet/in.h> 44#include <arpa/inet.h> 45#include <netinet/sctp_uio.h> 46#include <netinet/sctp.h> 47 48#include <net/if_dl.h> 49 50#ifndef IN6_IS_ADDR_V4MAPPED 51#define IN6_IS_ADDR_V4MAPPED(a) \ 52 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 53 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 54 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 55#endif 56 57#define SCTP_CONTROL_VEC_SIZE_SND 8192 58#define SCTP_CONTROL_VEC_SIZE_RCV 16384 59 60#ifdef SCTP_DEBUG_PRINT_ADDRESS 61static void 62SCTPPrintAnAddress(struct sockaddr *a) 63{ 64 char stringToPrint[256]; 65 u_short prt; 66 char *srcaddr, *txt; 67 68 if (a == NULL) { 69 printf("NULL\n"); 70 return; 71 } 72 if (a->sa_family == AF_INET) { 73 srcaddr = (char *)&((struct sockaddr_in *)a)->sin_addr; 74 txt = "IPv4 Address: "; 75 prt = ntohs(((struct sockaddr_in *)a)->sin_port); 76 } else if (a->sa_family == AF_INET6) { 77 srcaddr = (char *)&((struct sockaddr_in6 *)a)->sin6_addr; 78 prt = ntohs(((struct sockaddr_in6 *)a)->sin6_port); 79 txt = "IPv6 Address: "; 80 } else if (a->sa_family == AF_LINK) { 81 int i; 82 char tbuf[200]; 83 u_char adbuf[200]; 84 struct sockaddr_dl *dl; 85 86 dl = (struct sockaddr_dl *)a; 87 strncpy(tbuf, dl->sdl_data, dl->sdl_nlen); 88 tbuf[dl->sdl_nlen] = 0; 89 printf("Intf:%s (len:%d)Interface index:%d type:%x(%d) ll-len:%d ", 90 tbuf, 91 dl->sdl_nlen, 92 dl->sdl_index, 93 dl->sdl_type, 94 dl->sdl_type, 95 dl->sdl_alen 96 ); 97 memcpy(adbuf, LLADDR(dl), dl->sdl_alen); 98 for (i = 0; i < dl->sdl_alen; i++) { 99 printf("%2.2x", adbuf[i]); 100 if (i < (dl->sdl_alen - 1)) 101 printf(":"); 102 } 103 printf("\n"); 104 /* 105 * u_short sdl_route[16]; *//* source routing 106 * information 107 */ 108 return; 109 } else { 110 return; 111 } 112 if (inet_ntop(a->sa_family, srcaddr, stringToPrint, sizeof(stringToPrint))) { 113 if (a->sa_family == AF_INET6) { 114 printf("%s%s:%d scope:%d\n", 115 txt, stringToPrint, prt, 116 ((struct sockaddr_in6 *)a)->sin6_scope_id); 117 } else { 118 printf("%s%s:%d\n", txt, stringToPrint, prt); 119 } 120 121 } else { 122 printf("%s unprintable?\n", txt); 123 } 124} 125 126#endif /* SCTP_DEBUG_PRINT_ADDRESS */ 127 128static void 129in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6) 130{ 131 bzero(sin, sizeof(*sin)); 132 sin->sin_len = sizeof(struct sockaddr_in); 133 sin->sin_family = AF_INET; 134 sin->sin_port = sin6->sin6_port; 135 sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3]; 136} 137 138int 139sctp_getaddrlen(sa_family_t family) 140{ 141 int error, sd; 142 socklen_t siz; 143 struct sctp_assoc_value av; 144 145 av.assoc_value = family; 146 siz = sizeof(av); 147#if defined(AF_INET) 148 sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP); 149#elif defined(AF_INET6) 150 sd = socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP); 151#endif 152 if (sd == -1) { 153 return (errno); 154 } 155 error = getsockopt(sd, IPPROTO_SCTP, SCTP_GET_ADDR_LEN, &av, &siz); 156 close(sd); 157 if (error == 0) { 158 return ((int)av.assoc_value); 159 } else { 160 return (error); 161 } 162} 163 164int 165sctp_connectx(int sd, const struct sockaddr *addrs, int addrcnt) 166{ 167 char buf[2048]; 168 int i, ret, cnt, *aa; 169 char *cpto; 170 const struct sockaddr *at; 171 size_t len = sizeof(int); 172 173 at = addrs; 174 cnt = 0; 175 cpto = ((caddr_t)buf + sizeof(int)); 176 /* validate all the addresses and get the size */ 177 for (i = 0; i < addrcnt; i++) { 178 if (at->sa_family == AF_INET) { 179 memcpy(cpto, at, at->sa_len); 180 cpto = ((caddr_t)cpto + at->sa_len); 181 len += at->sa_len; 182 } else if (at->sa_family == AF_INET6) { 183 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)) { 184 len += sizeof(struct sockaddr_in); 185 in6_sin6_2_sin((struct sockaddr_in *)cpto, (struct sockaddr_in6 *)at); 186 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in)); 187 len += sizeof(struct sockaddr_in); 188 } else { 189 memcpy(cpto, at, at->sa_len); 190 cpto = ((caddr_t)cpto + at->sa_len); 191 len += at->sa_len; 192 } 193 } else { 194 errno = EINVAL; 195 return (-1); 196 } 197 if (len > (sizeof(buf) - sizeof(int))) { 198 /* Never enough memory */ 199 return (E2BIG); 200 } 201 at = (struct sockaddr *)((caddr_t)at + at->sa_len); 202 cnt++; 203 } 204 /* do we have any? */ 205 if (cnt == 0) { 206 errno = EINVAL; 207 return (-1); 208 } 209 aa = (int *)buf; 210 *aa = cnt; 211 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf, 212 (socklen_t) len); 213 return (ret); 214} 215 216int 217sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags) 218{ 219 struct sctp_getaddresses *gaddrs; 220 struct sockaddr *sa; 221 int i, sz, fam, argsz; 222 223 if ((flags != SCTP_BINDX_ADD_ADDR) && 224 (flags != SCTP_BINDX_REM_ADDR)) { 225 errno = EFAULT; 226 return (-1); 227 } 228 argsz = (sizeof(struct sockaddr_storage) + 229 sizeof(struct sctp_getaddresses)); 230 gaddrs = (struct sctp_getaddresses *)calloc(1, argsz); 231 if (gaddrs == NULL) { 232 errno = ENOMEM; 233 return (-1); 234 } 235 gaddrs->sget_assoc_id = 0; 236 sa = addrs; 237 for (i = 0; i < addrcnt; i++) { 238 sz = sa->sa_len; 239 fam = sa->sa_family; 240 ((struct sockaddr_in *)&addrs[i])->sin_port = ((struct sockaddr_in *)sa)->sin_port; 241 if ((fam != AF_INET) && (fam != AF_INET6)) { 242 errno = EINVAL; 243 return (-1); 244 } 245 memcpy(gaddrs->addr, sa, sz); 246 if (setsockopt(sd, IPPROTO_SCTP, flags, 247 gaddrs, (socklen_t) argsz) != 0) { 248 free(gaddrs); 249 return (-1); 250 } 251 memset(gaddrs, 0, argsz); 252 sa = (struct sockaddr *)((caddr_t)sa + sz); 253 } 254 free(gaddrs); 255 return (0); 256} 257 258 259int 260sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t * size) 261{ 262 if (arg == NULL) { 263 return (EINVAL); 264 } 265 if ((opt == SCTP_RTOINFO) || 266 (opt == SCTP_ASSOCINFO) || 267 (opt == SCTP_PRIMARY_ADDR) || 268 (opt == SCTP_SET_PEER_PRIMARY_ADDR) || 269 (opt == SCTP_PEER_ADDR_PARAMS) || 270 (opt == SCTP_STATUS) || 271 (opt == SCTP_GET_PEER_ADDR_INFO) || 272 (opt == SCTP_AUTH_ACTIVE_KEY) || 273 (opt == SCTP_PEER_AUTH_CHUNKS) || 274 (opt == SCTP_LOCAL_AUTH_CHUNKS)) { 275 *(sctp_assoc_t *) arg = id; 276 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size)); 277 } else { 278 errno = EOPNOTSUPP; 279 return (-1); 280 } 281} 282 283int 284sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs) 285{ 286 struct sctp_getaddresses *addrs; 287 struct sockaddr *sa; 288 struct sockaddr *re; 289 sctp_assoc_t asoc; 290 caddr_t lim; 291 size_t siz; 292 int cnt; 293 294 if (raddrs == NULL) { 295 errno = EFAULT; 296 return (-1); 297 } 298 asoc = id; 299 siz = sizeof(sctp_assoc_t); 300 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE, 301 &asoc, (socklen_t *) & siz) != 0) { 302 errno = ENOMEM; 303 return (-1); 304 } 305 /* size required is returned in 'asoc' */ 306 siz = (uint32_t) asoc; 307 siz += sizeof(struct sctp_getaddresses); 308 addrs = calloc((unsigned long)1, (unsigned long)siz); 309 if (addrs == NULL) { 310 errno = ENOMEM; 311 return (-1); 312 } 313 memset(addrs, 0, siz); 314 addrs->sget_assoc_id = id; 315 /* Now lets get the array of addresses */ 316 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES, 317 addrs, (socklen_t *) & siz) != 0) { 318 free(addrs); 319 errno = ENOMEM; 320 return (-1); 321 } 322 re = (struct sockaddr *)&addrs->addr[0]; 323 *raddrs = re; 324 cnt = 0; 325 sa = (struct sockaddr *)&addrs->addr[0]; 326 lim = (caddr_t)addrs + siz; 327 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) { 328 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); 329 cnt++; 330 } 331 return (cnt); 332} 333 334void 335sctp_freepaddrs(struct sockaddr *addrs) 336{ 337 /* Take away the hidden association id */ 338 void *fr_addr; 339 340 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t)); 341 /* Now free it */ 342 free(fr_addr); 343} 344 345int 346sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs) 347{ 348 struct sctp_getaddresses *addrs; 349 struct sockaddr *re; 350 caddr_t lim; 351 struct sockaddr *sa; 352 int size_of_addresses; 353 size_t siz; 354 int cnt; 355 356 if (raddrs == NULL) { 357 errno = EFAULT; 358 return (-1); 359 } 360 size_of_addresses = 0; 361 siz = sizeof(int); 362 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE, 363 &size_of_addresses, (socklen_t *) & siz) != 0) { 364 errno = ENOMEM; 365 return (-1); 366 } 367 if (size_of_addresses == 0) { 368 errno = ENOTCONN; 369 return (-1); 370 } 371 siz = size_of_addresses + sizeof(struct sockaddr_storage); 372 siz += sizeof(struct sctp_getaddresses); 373 addrs = calloc((unsigned long)1, (unsigned long)siz); 374 if (addrs == NULL) { 375 errno = ENOMEM; 376 return (-1); 377 } 378 memset(addrs, 0, siz); 379 addrs->sget_assoc_id = id; 380 /* Now lets get the array of addresses */ 381 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs, 382 (socklen_t *) & siz) != 0) { 383 free(addrs); 384 errno = ENOMEM; 385 return (-1); 386 } 387 re = (struct sockaddr *)&addrs->addr[0]; 388 *raddrs = re; 389 cnt = 0; 390 sa = (struct sockaddr *)&addrs->addr[0]; 391 lim = (caddr_t)addrs + siz; 392 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) { 393 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); 394 cnt++; 395 } 396 return (cnt); 397} 398 399void 400sctp_freeladdrs(struct sockaddr *addrs) 401{ 402 /* Take away the hidden association id */ 403 void *fr_addr; 404 405 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t)); 406 /* Now free it */ 407 free(fr_addr); 408} 409 410 411ssize_t 412sctp_sendmsg(int s, 413 const void *data, 414 size_t len, 415 const struct sockaddr *to, 416 socklen_t tolen __attribute__((unused)), 417 u_int32_t ppid, 418 u_int32_t flags, 419 u_int16_t stream_no, 420 u_int32_t timetolive, 421 u_int32_t context) 422{ 423#ifdef SYS_sctp_generic_sendmsg 424 struct sctp_sndrcvinfo sinfo; 425 426 sinfo.sinfo_ppid = ppid; 427 sinfo.sinfo_flags = flags; 428 sinfo.sinfo_stream = stream_no; 429 sinfo.sinfo_timetolive = timetolive; 430 sinfo.sinfo_context = context; 431 sinfo.sinfo_assoc_id = 0; 432 return (syscall(SYS_sctp_generic_sendmsg, s, 433 data, len, to, tolen, &sinfo, 0)); 434#else 435 436 ssize_t sz; 437 struct msghdr msg; 438 struct sctp_sndrcvinfo *s_info; 439 struct iovec iov[2]; 440 char controlVector[SCTP_CONTROL_VEC_SIZE_RCV]; 441 struct cmsghdr *cmsg; 442 struct sockaddr *who = NULL; 443 union { 444 struct sockaddr_in in; 445 struct sockaddr_in6 in6; 446 } addr; 447 448/* 449 fprintf(io, "sctp_sendmsg(sd:%d, data:%x, len:%d, to:%x, tolen:%d, ppid:%x, flags:%x str:%d ttl:%d ctx:%x\n", 450 s, 451 (u_int)data, 452 (int)len, 453 (u_int)to, 454 (int)tolen, 455 ppid, flags, 456 (int)stream_no, 457 (int)timetolive, 458 (u_int)context); 459 fflush(io); 460*/ 461 if (to) { 462 if (to->sa_len == 0) { 463 /* 464 * For the lazy app, that did not set sa_len, we 465 * attempt to set for them. 466 */ 467 if (to->sa_family == AF_INET) { 468 memcpy(&addr, to, sizeof(struct sockaddr_in)); 469 addr.in.sin_len = sizeof(struct sockaddr_in); 470 } else if (to->sa_family == AF_INET6) { 471 memcpy(&addr, to, sizeof(struct sockaddr_in6)); 472 addr.in6.sin6_len = sizeof(struct sockaddr_in6); 473 } 474 } else { 475 memcpy(&addr, to, to->sa_len); 476 } 477 who = (struct sockaddr *)&addr; 478 } 479 iov[0].iov_base = (char *)data; 480 iov[0].iov_len = len; 481 iov[1].iov_base = NULL; 482 iov[1].iov_len = 0; 483 484 if (to) { 485 msg.msg_name = (caddr_t)who; 486 msg.msg_namelen = who->sa_len; 487 } else { 488 msg.msg_name = (caddr_t)NULL; 489 msg.msg_namelen = 0; 490 } 491 msg.msg_iov = iov; 492 msg.msg_iovlen = 1; 493 msg.msg_control = (caddr_t)controlVector; 494 495 cmsg = (struct cmsghdr *)controlVector; 496 497 cmsg->cmsg_level = IPPROTO_SCTP; 498 cmsg->cmsg_type = SCTP_SNDRCV; 499 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 500 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 501 502 s_info->sinfo_stream = stream_no; 503 s_info->sinfo_ssn = 0; 504 s_info->sinfo_flags = flags; 505 s_info->sinfo_ppid = ppid; 506 s_info->sinfo_context = context; 507 s_info->sinfo_assoc_id = 0; 508 s_info->sinfo_timetolive = timetolive; 509 errno = 0; 510 msg.msg_controllen = cmsg->cmsg_len; 511 sz = sendmsg(s, &msg, 0); 512 return (sz); 513#endif 514} 515 516 517sctp_assoc_t 518sctp_getassocid(int sd, struct sockaddr *sa) 519{ 520 struct sctp_paddrparams sp; 521 size_t siz; 522 523 /* First get the assoc id */ 524 siz = sizeof(struct sctp_paddrparams); 525 memset(&sp, 0, sizeof(sp)); 526 memcpy((caddr_t)&sp.spp_address, sa, sa->sa_len); 527 errno = 0; 528 if (getsockopt(sd, IPPROTO_SCTP, 529 SCTP_PEER_ADDR_PARAMS, &sp, (socklen_t *) & siz) != 0) { 530 return ((sctp_assoc_t) 0); 531 } 532 /* We depend on the fact that 0 can never be returned */ 533 return (sp.spp_assoc_id); 534} 535 536ssize_t 537sctp_send(int sd, const void *data, size_t len, 538 const struct sctp_sndrcvinfo *sinfo, 539 int flags) 540{ 541 542#ifdef SYS_sctp_generic_sendmsg 543 struct sockaddr *to = NULL; 544 545 return (syscall(SYS_sctp_generic_sendmsg, sd, 546 data, len, to, 0, sinfo, flags)); 547#else 548 ssize_t sz; 549 struct msghdr msg; 550 struct iovec iov[2]; 551 struct sctp_sndrcvinfo *s_info; 552 char controlVector[SCTP_CONTROL_VEC_SIZE_SND]; 553 struct cmsghdr *cmsg; 554 555 if (sinfo == NULL) { 556 return (EINVAL); 557 } 558 iov[0].iov_base = (char *)data; 559 iov[0].iov_len = len; 560 iov[1].iov_base = NULL; 561 iov[1].iov_len = 0; 562 563 msg.msg_name = 0; 564 msg.msg_namelen = 0; 565 msg.msg_iov = iov; 566 msg.msg_iovlen = 1; 567 msg.msg_control = (caddr_t)controlVector; 568 569 cmsg = (struct cmsghdr *)controlVector; 570 571 cmsg->cmsg_level = IPPROTO_SCTP; 572 cmsg->cmsg_type = SCTP_SNDRCV; 573 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 574 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 575 /* copy in the data */ 576 *s_info = *sinfo; 577 errno = 0; 578 msg.msg_controllen = cmsg->cmsg_len; 579 sz = sendmsg(sd, &msg, flags); 580 return (sz); 581#endif 582} 583 584 585 586ssize_t 587sctp_sendx(int sd, const void *msg, size_t msg_len, 588 struct sockaddr *addrs, int addrcnt, 589 struct sctp_sndrcvinfo *sinfo, 590 int flags) 591{ 592 ssize_t ret; 593 int i, cnt, *aa, saved_errno; 594 char *buf; 595 int add_len, len, no_end_cx = 0; 596 struct sockaddr *at; 597 598 len = sizeof(int); 599 at = addrs; 600 cnt = 0; 601 /* validate all the addresses and get the size */ 602 for (i = 0; i < addrcnt; i++) { 603 if (at->sa_family == AF_INET) { 604 add_len = sizeof(struct sockaddr_in); 605 } else if (at->sa_family == AF_INET6) { 606 add_len = sizeof(struct sockaddr_in6); 607 } else { 608 errno = EINVAL; 609 return (-1); 610 } 611 len += add_len; 612 at = (struct sockaddr *)((caddr_t)at + add_len); 613 cnt++; 614 } 615 /* do we have any? */ 616 if (cnt == 0) { 617 errno = EINVAL; 618 return (-1); 619 } 620 if (len > 2048) { 621 /* Never enough memory */ 622 return (E2BIG); 623 } 624 buf = malloc(len); 625 if (buf == NULL) { 626 return (ENOMEM); 627 } 628 aa = (int *)buf; 629 *aa = cnt; 630 aa++; 631 memcpy((caddr_t)aa, addrs, (len - sizeof(int))); 632 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf, 633 (socklen_t) len); 634 635 free(buf); 636 if (ret != 0) { 637 if (errno == EALREADY) { 638 no_end_cx = 1;; 639 goto continue_send; 640 } 641 return (ret); 642 } 643continue_send: 644 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs); 645 if (sinfo->sinfo_assoc_id == 0) { 646 printf("Huh, can't get associd? TSNH!\n"); 647 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs, 648 (socklen_t) addrs->sa_len); 649 errno = ENOENT; 650 return (-1); 651 } 652 ret = sctp_send(sd, msg, msg_len, sinfo, flags); 653 saved_errno = errno; 654 if (no_end_cx == 0) 655 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs, 656 (socklen_t) addrs->sa_len); 657 658 errno = saved_errno; 659 return (ret); 660} 661 662ssize_t 663sctp_sendmsgx(int sd, 664 const void *msg, 665 size_t len, 666 struct sockaddr *addrs, 667 int addrcnt, 668 u_int32_t ppid, 669 u_int32_t flags, 670 u_int16_t stream_no, 671 u_int32_t timetolive, 672 u_int32_t context) 673{ 674 struct sctp_sndrcvinfo sinfo; 675 676 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo)); 677 sinfo.sinfo_ppid = ppid; 678 sinfo.sinfo_flags = flags; 679 sinfo.sinfo_ssn = stream_no; 680 sinfo.sinfo_timetolive = timetolive; 681 sinfo.sinfo_context = context; 682 return sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0); 683} 684 685ssize_t 686sctp_recvmsg(int s, 687 void *dbuf, 688 size_t len, 689 struct sockaddr *from, 690 socklen_t * fromlen, 691 struct sctp_sndrcvinfo *sinfo, 692 int *msg_flags) 693{ 694 695#ifdef SYS_sctp_generic_recvmsg 696 struct iovec iov[2]; 697 698 iov[0].iov_base = dbuf; 699 iov[0].iov_len = len; 700 return (syscall(SYS_sctp_generic_recvmsg, s, 701 iov, 1, from, fromlen, sinfo, msg_flags)); 702#else 703 struct sctp_sndrcvinfo *s_info; 704 ssize_t sz; 705 int sinfo_found = 0; 706 struct msghdr msg; 707 struct iovec iov[2]; 708 char controlVector[SCTP_CONTROL_VEC_SIZE_RCV]; 709 struct cmsghdr *cmsg; 710 711 if (msg_flags == NULL) { 712 errno = EINVAL; 713 return (-1); 714 } 715 msg.msg_flags = 0; 716 iov[0].iov_base = dbuf; 717 iov[0].iov_len = len; 718 iov[1].iov_base = NULL; 719 iov[1].iov_len = 0; 720 msg.msg_name = (caddr_t)from; 721 if (fromlen == NULL) 722 msg.msg_namelen = 0; 723 else 724 msg.msg_namelen = *fromlen; 725 msg.msg_iov = iov; 726 msg.msg_iovlen = 1; 727 msg.msg_control = (caddr_t)controlVector; 728 msg.msg_controllen = sizeof(controlVector); 729 errno = 0; 730 sz = recvmsg(s, &msg, 0); 731 if (sz <= 0) 732 return (sz); 733 734 s_info = NULL; 735 len = sz; 736 *msg_flags = msg.msg_flags; 737 if (sinfo) 738 sinfo->sinfo_assoc_id = 0; 739 740 if ((msg.msg_controllen) && sinfo) { 741 /* 742 * parse through and see if we find the sctp_sndrcvinfo (if 743 * the user wants it). 744 */ 745 cmsg = (struct cmsghdr *)controlVector; 746 while (cmsg) { 747 if ((cmsg->cmsg_len == 0) || (cmsg->cmsg_len > msg.msg_controllen)) { 748 break; 749 } 750 if (cmsg->cmsg_level == IPPROTO_SCTP) { 751 if (cmsg->cmsg_type == SCTP_SNDRCV) { 752 /* Got it */ 753 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 754 /* Copy it to the user */ 755 if (sinfo) 756 *sinfo = *s_info; 757 sinfo_found = 1; 758 break; 759 } else if (cmsg->cmsg_type == SCTP_EXTRCV) { 760 /* 761 * Got it, presumably the user has 762 * asked for this extra info, so the 763 * structure holds more room :-D 764 */ 765 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 766 /* Copy it to the user */ 767 if (sinfo) { 768 memcpy(sinfo, s_info, sizeof(struct sctp_extrcvinfo)); 769 } 770 sinfo_found = 1; 771 break; 772 773 } 774 } 775 cmsg = CMSG_NXTHDR(&msg, cmsg); 776 } 777 } 778 return (sz); 779#endif 780} 781 782 783#if defined(HAVE_SCTP_PEELOFF_SOCKOPT) 784#include <netinet/sctp_peeloff.h> 785 786int 787sctp_peeloff(int sd, sctp_assoc_t assoc_id) 788{ 789 struct sctp_peeloff_opt peeloff; 790 int error; 791 socklen_t optlen; 792 793 /* set in the socket option params */ 794 memset(&peeloff, 0, sizeof(peeloff)); 795 peeloff.s = sd; 796 peeloff.assoc_id = assoc_id; 797 optlen = sizeof(peeloff); 798 error = getsockopt(sd, IPPROTO_SCTP, SCTP_PEELOFF, (void *)&peeloff, 799 &optlen); 800 if (error) { 801 errno = error; 802 return (-1); 803 } else { 804 return (peeloff.new_sd); 805 } 806} 807 808#endif 809 810#if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT) 811 812int 813sctp_peeloff(int sd, sctp_assoc_t assoc_id) 814{ 815 /* NOT supported, return invalid sd */ 816 errno = ENOTSUP; 817 return (-1); 818} 819 820#endif 821#if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT) 822int 823sctp_peeloff(int sd, sctp_assoc_t assoc_id) 824{ 825 return (syscall(SYS_sctp_peeloff, sd, assoc_id)); 826} 827 828#endif 829