1 /* $KAME: sctp_sys_calls.c,v 1.9 2004/08/17 06:08:53 itojun Exp $ */
4 * Copyright (C) 2002, 2003, 2004 Cisco Systems Inc,
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
37 #include <sys/types.h>
38 #include <sys/socket.h>
39 #include <sys/errno.h>
40 #include <sys/syscall.h>
42 #include <netinet/in.h>
43 #include <arpa/inet.h>
44 #include <netinet/sctp_uio.h>
45 #include <netinet/sctp.h>
46 #include <netinet/sctp_constants.h>
48 #include <net/if_dl.h>
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)))
58 #ifdef SCTP_DEBUG_PRINT_ADDRESS
60 SCTPPrintAnAddress(struct sockaddr *a)
62 char stringToPrint[256];
70 if (a->sa_family == AF_INET) {
71 srcaddr = (char *)&((struct sockaddr_in *)a)->sin_addr;
72 txt = "IPv4 Address: ";
73 prt = ntohs(((struct sockaddr_in *)a)->sin_port);
74 } else if (a->sa_family == AF_INET6) {
75 srcaddr = (char *)&((struct sockaddr_in6 *)a)->sin6_addr;
76 prt = ntohs(((struct sockaddr_in6 *)a)->sin6_port);
77 txt = "IPv6 Address: ";
78 } else if (a->sa_family == AF_LINK) {
82 struct sockaddr_dl *dl;
84 dl = (struct sockaddr_dl *)a;
85 strncpy(tbuf, dl->sdl_data, dl->sdl_nlen);
86 tbuf[dl->sdl_nlen] = 0;
87 printf("Intf:%s (len:%d)Interface index:%d type:%x(%d) ll-len:%d ",
88 tbuf, dl->sdl_nlen, dl->sdl_index, dl->sdl_type,
89 dl->sdl_type, dl->sdl_alen);
90 memcpy(adbuf, LLADDR(dl), dl->sdl_alen);
91 for (i = 0; i < dl->sdl_alen; i++){
92 printf("%2.2x", adbuf[i]);
93 if (i < (dl->sdl_alen - 1))
97 /* u_short sdl_route[16];*/ /* source routing information */
102 if (inet_ntop(a->sa_family, srcaddr, stringToPrint,
103 sizeof(stringToPrint))) {
104 if (a->sa_family == AF_INET6) {
105 printf("%s%s:%d scope:%d\n", txt, stringToPrint, prt,
106 ((struct sockaddr_in6 *)a)->sin6_scope_id);
108 printf("%s%s:%d\n", txt, stringToPrint, prt);
112 printf("%s unprintable?\n", txt);
115 #endif /* SCTP_DEBUG_PRINT_ADDRESS */
118 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
120 bzero(sin, sizeof(*sin));
121 sin->sin_len = sizeof(struct sockaddr_in);
122 sin->sin_family = AF_INET;
123 sin->sin_port = sin6->sin6_port;
124 sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3];
128 sctp_connectx(int sd, struct sockaddr *addrs, int addrcnt)
131 int i, ret, cnt, *aa;
134 size_t len = sizeof(int);
138 cpto = ((caddr_t)buf + sizeof(int));
139 /* validate all the addresses and get the size */
140 for (i = 0; i < addrcnt; i++) {
141 if (at->sa_family == AF_INET) {
142 memcpy(cpto, at, at->sa_len);
143 cpto = ((caddr_t)cpto + at->sa_len);
145 } else if (at->sa_family == AF_INET6){
146 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)){
147 len += sizeof(struct sockaddr_in);
148 in6_sin6_2_sin((struct sockaddr_in *)cpto,
149 (struct sockaddr_in6 *)at);
150 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
151 len += sizeof(struct sockaddr_in);
153 memcpy(cpto, at, at->sa_len);
154 cpto = ((caddr_t)cpto + at->sa_len);
161 if (len > (sizeof(buf)-sizeof(int))) {
162 /* Never enough memory */
165 at = (struct sockaddr *)((caddr_t)at + at->sa_len);
168 /* do we have any? */
175 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf,
181 sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags)
183 struct sctp_getaddresses *gaddrs;
185 int i, sz, fam, argsz;
187 if ((flags != SCTP_BINDX_ADD_ADDR) &&
188 (flags != SCTP_BINDX_REM_ADDR)) {
192 argsz = (sizeof(struct sockaddr_storage) +
193 sizeof(struct sctp_getaddresses));
194 gaddrs = (struct sctp_getaddresses *)calloc(1, argsz);
195 if (gaddrs == NULL) {
199 gaddrs->sget_assoc_id = 0;
201 for (i = 0; i < addrcnt; i++) {
204 ((struct sockaddr_in *)&addrs[i])->sin_port = ((struct sockaddr_in *)sa)->sin_port;
205 if ((fam != AF_INET) && (fam != AF_INET6)) {
209 memcpy(gaddrs->addr, sa, sz);
210 if (setsockopt(sd, IPPROTO_SCTP, flags, gaddrs,
211 (unsigned int)argsz) != 0) {
215 memset(gaddrs, 0, argsz);
216 sa = (struct sockaddr *)((caddr_t)sa + sz);
224 sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, size_t *size)
226 if ((opt == SCTP_RTOINFO) ||
227 (opt == SCTP_ASSOCINFO) ||
228 (opt == SCTP_PRIMARY_ADDR) ||
229 (opt == SCTP_SET_PEER_PRIMARY_ADDR) ||
230 (opt == SCTP_PEER_ADDR_PARAMS) ||
231 (opt == SCTP_STATUS) ||
232 (opt == SCTP_GET_PEER_ADDR_INFO)) {
233 *(sctp_assoc_t *)arg = id;
234 return(getsockopt(sd, IPPROTO_SCTP, opt, arg, (int *)size));
242 sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
244 struct sctp_getaddresses *addrs;
252 if (raddrs == NULL) {
257 siz = sizeof(sctp_assoc_t);
258 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE,
262 siz = (unsigned int)(uintptr_t)asoc;
263 siz += sizeof(struct sctp_getaddresses);
264 addrs = calloc((unsigned long)1, (unsigned long)siz);
269 memset(addrs, 0, (size_t)siz);
270 addrs->sget_assoc_id = id;
271 /* Now lets get the array of addresses */
272 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES,
277 re = (struct sockaddr *)&addrs->addr[0];
280 sa = (struct sockaddr *)&addrs->addr[0];
281 lim = (caddr_t)addrs + siz;
282 while ((caddr_t)sa < lim) {
284 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
291 void sctp_freepaddrs(struct sockaddr *addrs)
293 /* Take away the hidden association id */
295 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
301 sctp_getladdrs (int sd, sctp_assoc_t id, struct sockaddr **raddrs)
303 struct sctp_getaddresses *addrs;
307 int size_of_addresses;
311 if (raddrs == NULL) {
315 size_of_addresses = 0;
317 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE,
318 &size_of_addresses, &siz) != 0) {
321 if (size_of_addresses == 0) {
325 siz = size_of_addresses + sizeof(struct sockaddr_storage);
326 siz += sizeof(struct sctp_getaddresses);
327 addrs = calloc((unsigned long)1, (unsigned long)siz);
332 memset(addrs, 0, (size_t)siz);
333 addrs->sget_assoc_id = id;
334 /* Now lets get the array of addresses */
335 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs,
340 re = (struct sockaddr *)&addrs->addr[0];
343 sa = (struct sockaddr *)&addrs->addr[0];
344 lim = (caddr_t)addrs + siz;
345 while ((caddr_t)sa < lim) {
347 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
354 void sctp_freeladdrs(struct sockaddr *addrs)
356 /* Take away the hidden association id */
358 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
368 const struct sockaddr *to,
369 socklen_t tolen __attribute__((unused)),
373 u_int32_t timetolive,
379 char controlVector[256];
380 struct sctp_sndrcvinfo *s_info;
381 struct cmsghdr *cmsg;
382 struct sockaddr *who=NULL;
384 struct sockaddr_in in;
385 struct sockaddr_in6 in6;
389 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",
390 s, (u_int)data, (int)len, (u_int)to, (int)tolen, ppid, flags,
391 (int)stream_no, (int)timetolive, (u_int)context);
395 if (to->sa_len == 0) {
397 * For the lazy app, that did not
398 * set sa_len, we attempt to set for them.
400 if (to->sa_family == AF_INET){
401 memcpy(&addr, to, sizeof(struct sockaddr_in));
402 addr.in.sin_len = sizeof(struct sockaddr_in);
403 } else if (to->sa_family == AF_INET6){
404 memcpy(&addr, to, sizeof(struct sockaddr_in6));
405 addr.in6.sin6_len = sizeof(struct sockaddr_in6);
408 memcpy (&addr, to, to->sa_len);
410 who = (struct sockaddr *)&addr;
412 iov[0].iov_base = (char *)data;
413 iov[0].iov_len = len;
414 iov[1].iov_base = NULL;
418 msg.msg_name = (caddr_t)who;
419 msg.msg_namelen = who->sa_len;
426 msg.msg_control = (caddr_t)controlVector;
428 cmsg = (struct cmsghdr *)controlVector;
430 cmsg->cmsg_level = IPPROTO_SCTP;
431 cmsg->cmsg_type = SCTP_SNDRCV;
432 cmsg->cmsg_len = CMSG_LEN (sizeof(struct sctp_sndrcvinfo) );
433 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
435 s_info->sinfo_stream = stream_no;
436 s_info->sinfo_ssn = 0;
437 s_info->sinfo_flags = flags;
438 s_info->sinfo_ppid = ppid;
439 s_info->sinfo_context = context;
440 s_info->sinfo_assoc_id = 0;
441 s_info->sinfo_timetolive = timetolive;
443 msg.msg_controllen = cmsg->cmsg_len;
444 sz = sendmsg(s, &msg, 0);
449 sctp_getassocid(int sd, struct sockaddr *sa)
451 struct sctp_paddrparams sp;
454 /* First get the assoc id */
455 siz = sizeof(struct sctp_paddrparams);
456 memset(&sp, 0, sizeof(sp));
457 memcpy((caddr_t)&sp.spp_address, sa, sa->sa_len);
459 if (getsockopt(sd, IPPROTO_SCTP, SCTP_PEER_ADDR_PARAMS, &sp, &siz) != 0)
460 return((sctp_assoc_t)0);
461 /* We depend on the fact that 0 can never be returned */
462 return(sp.spp_assoc_id);
468 sctp_send(int sd, const void *data, size_t len,
469 const struct sctp_sndrcvinfo *sinfo,
475 struct sctp_sndrcvinfo *s_info;
476 char controlVector[256];
477 struct cmsghdr *cmsg;
479 iov[0].iov_base = (char *)data;
480 iov[0].iov_len = len;
481 iov[1].iov_base = NULL;
488 msg.msg_control = (caddr_t)controlVector;
490 cmsg = (struct cmsghdr *)controlVector;
492 cmsg->cmsg_level = IPPROTO_SCTP;
493 cmsg->cmsg_type = SCTP_SNDRCV;
494 cmsg->cmsg_len = CMSG_LEN (sizeof(struct sctp_sndrcvinfo) );
495 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
496 /* copy in the data */
499 msg.msg_controllen = cmsg->cmsg_len;
500 sz = sendmsg(sd, &msg, flags);
506 sctp_sendx(int sd, const void *msg, size_t len,
507 struct sockaddr *addrs, int addrcnt,
508 struct sctp_sndrcvinfo *sinfo,
511 int i, cnt, *aa, saved_errno;
519 /* validate all the addresses and get the size */
520 for (i = 0; i < addrcnt; i++) {
521 if (at->sa_family == AF_INET) {
522 add_len = sizeof(struct sockaddr_in);
523 } else if (at->sa_family == AF_INET6) {
524 add_len = sizeof(struct sockaddr_in6);
530 at = (struct sockaddr *)((caddr_t)at + add_len);
533 /* do we have any? */
539 /* Never enough memory */
551 memcpy((caddr_t)aa, addrs, (len - sizeof(int)));
552 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf,
559 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
560 if (sinfo->sinfo_assoc_id == 0) {
561 printf("Huh, can't get associd? TSNH!\n");
562 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
563 (unsigned int)addrs->sa_len);
567 ret = sctp_send(sd, msg, len, sinfo, flags);
569 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
570 (unsigned int)addrs->sa_len);
577 sctp_sendmsgx(int sd,
580 struct sockaddr *addrs,
585 u_int32_t timetolive,
588 struct sctp_sndrcvinfo sinfo;
590 memset((void *) &sinfo, 0, sizeof(struct sctp_sndrcvinfo));
591 sinfo.sinfo_ppid = ppid;
592 sinfo.sinfo_flags = flags;
593 sinfo.sinfo_ssn = stream_no;
594 sinfo.sinfo_timetolive = timetolive;
595 sinfo.sinfo_context = context;
596 return sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0);
603 struct sockaddr *from,
605 struct sctp_sndrcvinfo *sinfo,
608 struct sctp_sndrcvinfo *s_info;
612 char controlVector[2048];
613 struct cmsghdr *cmsg;
614 iov[0].iov_base = dbuf;
615 iov[0].iov_len = len;
616 iov[1].iov_base = NULL;
618 msg.msg_name = (caddr_t)from;
619 msg.msg_namelen = *fromlen;
622 msg.msg_control = (caddr_t)controlVector;
623 msg.msg_controllen = sizeof(controlVector);
625 sz = recvmsg(s, &msg, 0);
629 *msg_flags = msg.msg_flags;
630 *fromlen = msg.msg_namelen;
631 if ((msg.msg_controllen) && sinfo) {
632 /* parse through and see if we find
633 * the sctp_sndrcvinfo (if the user wants it).
635 cmsg = (struct cmsghdr *)controlVector;
637 if (cmsg->cmsg_level == IPPROTO_SCTP) {
638 if (cmsg->cmsg_type == SCTP_SNDRCV) {
640 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
641 /* Copy it to the user */
646 cmsg = CMSG_NXTHDR(&msg, cmsg);
652 #ifdef SYS_sctp_peeloff
654 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
656 return (syscall(SYS_sctp_peeloff, sd, assoc_id));