1192 lines
30 KiB
C
1192 lines
30 KiB
C
/*-
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
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* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/errno.h>
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#include <sys/syscall.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netinet/sctp_uio.h>
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#include <netinet/sctp.h>
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#ifndef IN6_IS_ADDR_V4MAPPED
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#define IN6_IS_ADDR_V4MAPPED(a) \
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((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
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(*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
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(*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
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#endif
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#define SCTP_CONTROL_VEC_SIZE_RCV 16384
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static void
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in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
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{
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bzero(sin, sizeof(*sin));
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sin->sin_len = sizeof(struct sockaddr_in);
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sin->sin_family = AF_INET;
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sin->sin_port = sin6->sin6_port;
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sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3];
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}
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int
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sctp_getaddrlen(sa_family_t family)
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{
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int ret, sd;
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socklen_t siz;
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struct sctp_assoc_value av;
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av.assoc_value = family;
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siz = sizeof(av);
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#if defined(AF_INET)
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sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
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#elif defined(AF_INET6)
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sd = socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP);
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#else
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sd = -1;
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#endif
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if (sd == -1) {
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return (-1);
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}
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ret = getsockopt(sd, IPPROTO_SCTP, SCTP_GET_ADDR_LEN, &av, &siz);
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close(sd);
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if (ret == 0) {
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return ((int)av.assoc_value);
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} else {
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return (-1);
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}
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}
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int
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sctp_connectx(int sd, const struct sockaddr *addrs, int addrcnt,
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sctp_assoc_t * id)
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{
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char *buf;
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int i, ret, *aa;
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char *cpto;
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const struct sockaddr *at;
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size_t len;
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/* validate the address count and list */
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if ((addrs == NULL) || (addrcnt <= 0)) {
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errno = EINVAL;
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return (-1);
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}
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if ((buf = malloc(sizeof(int) + (size_t)addrcnt * sizeof(struct sockaddr_in6))) == NULL) {
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errno = E2BIG;
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return (-1);
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}
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len = sizeof(int);
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at = addrs;
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cpto = buf + sizeof(int);
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/* validate all the addresses and get the size */
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for (i = 0; i < addrcnt; i++) {
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switch (at->sa_family) {
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case AF_INET:
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if (at->sa_len != sizeof(struct sockaddr_in)) {
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free(buf);
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errno = EINVAL;
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return (-1);
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}
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memcpy(cpto, at, sizeof(struct sockaddr_in));
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cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
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len += sizeof(struct sockaddr_in);
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break;
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case AF_INET6:
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if (at->sa_len != sizeof(struct sockaddr_in6)) {
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free(buf);
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errno = EINVAL;
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return (-1);
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}
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if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)) {
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in6_sin6_2_sin((struct sockaddr_in *)cpto, (struct sockaddr_in6 *)at);
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cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
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len += sizeof(struct sockaddr_in);
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} else {
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memcpy(cpto, at, sizeof(struct sockaddr_in6));
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cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in6));
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len += sizeof(struct sockaddr_in6);
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}
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break;
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default:
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free(buf);
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errno = EINVAL;
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return (-1);
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}
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at = (struct sockaddr *)((caddr_t)at + at->sa_len);
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}
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aa = (int *)buf;
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*aa = addrcnt;
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ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf,
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(socklen_t) len);
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if ((ret == 0) && (id != NULL)) {
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*id = *(sctp_assoc_t *) buf;
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}
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free(buf);
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return (ret);
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}
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int
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sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags)
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{
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struct sctp_getaddresses *gaddrs;
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struct sockaddr *sa;
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struct sockaddr_in *sin;
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struct sockaddr_in6 *sin6;
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int i;
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size_t argsz;
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uint16_t sport = 0;
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/* validate the flags */
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if ((flags != SCTP_BINDX_ADD_ADDR) &&
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(flags != SCTP_BINDX_REM_ADDR)) {
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errno = EFAULT;
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return (-1);
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}
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/* validate the address count and list */
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if ((addrcnt <= 0) || (addrs == NULL)) {
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errno = EINVAL;
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return (-1);
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}
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/* First pre-screen the addresses */
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sa = addrs;
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for (i = 0; i < addrcnt; i++) {
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switch (sa->sa_family) {
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case AF_INET:
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if (sa->sa_len != sizeof(struct sockaddr_in)) {
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errno = EINVAL;
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return (-1);
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}
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sin = (struct sockaddr_in *)sa;
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if (sin->sin_port) {
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/* non-zero port, check or save */
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if (sport) {
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/* Check against our port */
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if (sport != sin->sin_port) {
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errno = EINVAL;
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return (-1);
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}
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} else {
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/* save off the port */
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sport = sin->sin_port;
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}
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}
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break;
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case AF_INET6:
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if (sa->sa_len != sizeof(struct sockaddr_in6)) {
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errno = EINVAL;
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return (-1);
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}
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sin6 = (struct sockaddr_in6 *)sa;
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if (sin6->sin6_port) {
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/* non-zero port, check or save */
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if (sport) {
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/* Check against our port */
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if (sport != sin6->sin6_port) {
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errno = EINVAL;
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return (-1);
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}
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} else {
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/* save off the port */
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sport = sin6->sin6_port;
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}
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}
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break;
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default:
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/* Invalid address family specified. */
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errno = EAFNOSUPPORT;
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return (-1);
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}
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sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
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}
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argsz = sizeof(struct sctp_getaddresses) +
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sizeof(struct sockaddr_storage);
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if ((gaddrs = (struct sctp_getaddresses *)malloc(argsz)) == NULL) {
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errno = ENOMEM;
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return (-1);
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}
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sa = addrs;
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for (i = 0; i < addrcnt; i++) {
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memset(gaddrs, 0, argsz);
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gaddrs->sget_assoc_id = 0;
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memcpy(gaddrs->addr, sa, sa->sa_len);
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/*
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* Now, if there was a port mentioned, assure that the first
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* address has that port to make sure it fails or succeeds
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* correctly.
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*/
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if ((i == 0) && (sport != 0)) {
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switch (gaddrs->addr->sa_family) {
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case AF_INET:
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sin = (struct sockaddr_in *)gaddrs->addr;
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sin->sin_port = sport;
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break;
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case AF_INET6:
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sin6 = (struct sockaddr_in6 *)gaddrs->addr;
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sin6->sin6_port = sport;
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break;
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}
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}
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if (setsockopt(sd, IPPROTO_SCTP, flags, gaddrs,
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(socklen_t) argsz) != 0) {
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free(gaddrs);
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return (-1);
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}
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sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
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}
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free(gaddrs);
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return (0);
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}
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int
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sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t * size)
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{
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if (arg == NULL) {
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errno = EINVAL;
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return (-1);
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}
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if ((id == SCTP_CURRENT_ASSOC) ||
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(id == SCTP_ALL_ASSOC)) {
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errno = EINVAL;
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return (-1);
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}
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switch (opt) {
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case SCTP_RTOINFO:
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((struct sctp_rtoinfo *)arg)->srto_assoc_id = id;
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break;
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case SCTP_ASSOCINFO:
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((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
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break;
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case SCTP_DEFAULT_SEND_PARAM:
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((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
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break;
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case SCTP_PRIMARY_ADDR:
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((struct sctp_setprim *)arg)->ssp_assoc_id = id;
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break;
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case SCTP_PEER_ADDR_PARAMS:
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((struct sctp_paddrparams *)arg)->spp_assoc_id = id;
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break;
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case SCTP_MAXSEG:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_AUTH_KEY:
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((struct sctp_authkey *)arg)->sca_assoc_id = id;
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break;
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case SCTP_AUTH_ACTIVE_KEY:
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((struct sctp_authkeyid *)arg)->scact_assoc_id = id;
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break;
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case SCTP_DELAYED_SACK:
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((struct sctp_sack_info *)arg)->sack_assoc_id = id;
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break;
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case SCTP_CONTEXT:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_STATUS:
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((struct sctp_status *)arg)->sstat_assoc_id = id;
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break;
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case SCTP_GET_PEER_ADDR_INFO:
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((struct sctp_paddrinfo *)arg)->spinfo_assoc_id = id;
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break;
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case SCTP_PEER_AUTH_CHUNKS:
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((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
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break;
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case SCTP_LOCAL_AUTH_CHUNKS:
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((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
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break;
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case SCTP_TIMEOUTS:
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((struct sctp_timeouts *)arg)->stimo_assoc_id = id;
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break;
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case SCTP_EVENT:
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((struct sctp_event *)arg)->se_assoc_id = id;
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break;
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case SCTP_DEFAULT_SNDINFO:
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((struct sctp_sndinfo *)arg)->snd_assoc_id = id;
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break;
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case SCTP_DEFAULT_PRINFO:
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((struct sctp_default_prinfo *)arg)->pr_assoc_id = id;
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break;
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case SCTP_PEER_ADDR_THLDS:
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((struct sctp_paddrthlds *)arg)->spt_assoc_id = id;
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break;
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case SCTP_REMOTE_UDP_ENCAPS_PORT:
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((struct sctp_udpencaps *)arg)->sue_assoc_id = id;
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break;
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case SCTP_ECN_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_PR_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_AUTH_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_ASCONF_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_RECONFIG_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_NRSACK_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_PKTDROP_SUPPORTED:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_MAX_BURST:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_ENABLE_STREAM_RESET:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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case SCTP_PR_STREAM_STATUS:
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((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
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break;
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case SCTP_PR_ASSOC_STATUS:
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((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
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break;
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case SCTP_MAX_CWND:
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((struct sctp_assoc_value *)arg)->assoc_id = id;
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break;
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default:
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break;
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}
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return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size));
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}
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int
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sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
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{
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struct sctp_getaddresses *addrs;
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struct sockaddr *sa;
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sctp_assoc_t asoc;
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caddr_t lim;
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socklen_t opt_len;
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int cnt;
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if (raddrs == NULL) {
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errno = EFAULT;
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return (-1);
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}
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asoc = id;
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opt_len = (socklen_t) sizeof(sctp_assoc_t);
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if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE,
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&asoc, &opt_len) != 0) {
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return (-1);
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}
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/* size required is returned in 'asoc' */
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opt_len = (socklen_t) ((size_t)asoc + sizeof(struct sctp_getaddresses));
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addrs = calloc(1, (size_t)opt_len);
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if (addrs == NULL) {
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errno = ENOMEM;
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return (-1);
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}
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addrs->sget_assoc_id = id;
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/* Now lets get the array of addresses */
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if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES,
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addrs, &opt_len) != 0) {
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free(addrs);
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return (-1);
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}
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*raddrs = (struct sockaddr *)&addrs->addr[0];
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cnt = 0;
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sa = (struct sockaddr *)&addrs->addr[0];
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lim = (caddr_t)addrs + opt_len;
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while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
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sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
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cnt++;
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}
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return (cnt);
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}
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|
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void
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sctp_freepaddrs(struct sockaddr *addrs)
|
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{
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void *fr_addr;
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|
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/* Take away the hidden association id */
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fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
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/* Now free it */
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free(fr_addr);
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}
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|
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int
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sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
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{
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struct sctp_getaddresses *addrs;
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caddr_t lim;
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struct sockaddr *sa;
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size_t size_of_addresses;
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socklen_t opt_len;
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int cnt;
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if (raddrs == NULL) {
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errno = EFAULT;
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return (-1);
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}
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size_of_addresses = 0;
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opt_len = (socklen_t) sizeof(int);
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if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE,
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|
&size_of_addresses, &opt_len) != 0) {
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errno = ENOMEM;
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return (-1);
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}
|
|
if (size_of_addresses == 0) {
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errno = ENOTCONN;
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return (-1);
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}
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|
opt_len = (socklen_t) (size_of_addresses +
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sizeof(struct sockaddr_storage) +
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|
sizeof(struct sctp_getaddresses));
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|
addrs = calloc(1, (size_t)opt_len);
|
|
if (addrs == NULL) {
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errno = ENOMEM;
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|
return (-1);
|
|
}
|
|
addrs->sget_assoc_id = id;
|
|
/* Now lets get the array of addresses */
|
|
if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs,
|
|
&opt_len) != 0) {
|
|
free(addrs);
|
|
errno = ENOMEM;
|
|
return (-1);
|
|
}
|
|
*raddrs = (struct sockaddr *)&addrs->addr[0];
|
|
cnt = 0;
|
|
sa = (struct sockaddr *)&addrs->addr[0];
|
|
lim = (caddr_t)addrs + opt_len;
|
|
while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
|
|
sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
|
|
cnt++;
|
|
}
|
|
return (cnt);
|
|
}
|
|
|
|
void
|
|
sctp_freeladdrs(struct sockaddr *addrs)
|
|
{
|
|
void *fr_addr;
|
|
|
|
/* Take away the hidden association id */
|
|
fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
|
|
/* Now free it */
|
|
free(fr_addr);
|
|
}
|
|
|
|
ssize_t
|
|
sctp_sendmsg(int s,
|
|
const void *data,
|
|
size_t len,
|
|
const struct sockaddr *to,
|
|
socklen_t tolen,
|
|
uint32_t ppid,
|
|
uint32_t flags,
|
|
uint16_t stream_no,
|
|
uint32_t timetolive,
|
|
uint32_t context)
|
|
{
|
|
#ifdef SYS_sctp_generic_sendmsg
|
|
struct sctp_sndrcvinfo sinfo;
|
|
|
|
memset(&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
|
|
sinfo.sinfo_ppid = ppid;
|
|
sinfo.sinfo_flags = flags;
|
|
sinfo.sinfo_stream = stream_no;
|
|
sinfo.sinfo_timetolive = timetolive;
|
|
sinfo.sinfo_context = context;
|
|
sinfo.sinfo_assoc_id = 0;
|
|
return (syscall(SYS_sctp_generic_sendmsg, s,
|
|
data, len, to, tolen, &sinfo, 0));
|
|
#else
|
|
struct msghdr msg;
|
|
struct sctp_sndrcvinfo *sinfo;
|
|
struct iovec iov;
|
|
char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
|
|
struct cmsghdr *cmsg;
|
|
struct sockaddr *who = NULL;
|
|
union {
|
|
struct sockaddr_in in;
|
|
struct sockaddr_in6 in6;
|
|
} addr;
|
|
|
|
if ((tolen > 0) &&
|
|
((to == NULL) || (tolen < sizeof(struct sockaddr)))) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if ((to != NULL) && (tolen > 0)) {
|
|
switch (to->sa_family) {
|
|
case AF_INET:
|
|
if (tolen != sizeof(struct sockaddr_in)) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if ((to->sa_len > 0) &&
|
|
(to->sa_len != sizeof(struct sockaddr_in))) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
memcpy(&addr, to, sizeof(struct sockaddr_in));
|
|
addr.in.sin_len = sizeof(struct sockaddr_in);
|
|
break;
|
|
case AF_INET6:
|
|
if (tolen != sizeof(struct sockaddr_in6)) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if ((to->sa_len > 0) &&
|
|
(to->sa_len != sizeof(struct sockaddr_in6))) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
memcpy(&addr, to, sizeof(struct sockaddr_in6));
|
|
addr.in6.sin6_len = sizeof(struct sockaddr_in6);
|
|
break;
|
|
default:
|
|
errno = EAFNOSUPPORT;
|
|
return (-1);
|
|
}
|
|
who = (struct sockaddr *)&addr;
|
|
}
|
|
iov.iov_base = (char *)data;
|
|
iov.iov_len = len;
|
|
|
|
if (who) {
|
|
msg.msg_name = (caddr_t)who;
|
|
msg.msg_namelen = who->sa_len;
|
|
} else {
|
|
msg.msg_name = (caddr_t)NULL;
|
|
msg.msg_namelen = 0;
|
|
}
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = cmsgbuf;
|
|
msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
|
|
msg.msg_flags = 0;
|
|
cmsg = (struct cmsghdr *)cmsgbuf;
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_SNDRCV;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
|
|
sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
|
|
memset(sinfo, 0, sizeof(struct sctp_sndrcvinfo));
|
|
sinfo->sinfo_stream = stream_no;
|
|
sinfo->sinfo_ssn = 0;
|
|
sinfo->sinfo_flags = flags;
|
|
sinfo->sinfo_ppid = ppid;
|
|
sinfo->sinfo_context = context;
|
|
sinfo->sinfo_assoc_id = 0;
|
|
sinfo->sinfo_timetolive = timetolive;
|
|
return (sendmsg(s, &msg, 0));
|
|
#endif
|
|
}
|
|
|
|
|
|
sctp_assoc_t
|
|
sctp_getassocid(int sd, struct sockaddr *sa)
|
|
{
|
|
struct sctp_paddrinfo sp;
|
|
socklen_t siz;
|
|
|
|
/* First get the assoc id */
|
|
siz = sizeof(sp);
|
|
memset(&sp, 0, sizeof(sp));
|
|
memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len);
|
|
if (getsockopt(sd, IPPROTO_SCTP,
|
|
SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) {
|
|
/* We depend on the fact that 0 can never be returned */
|
|
return ((sctp_assoc_t) 0);
|
|
}
|
|
return (sp.spinfo_assoc_id);
|
|
}
|
|
|
|
ssize_t
|
|
sctp_send(int sd, const void *data, size_t len,
|
|
const struct sctp_sndrcvinfo *sinfo,
|
|
int flags)
|
|
{
|
|
|
|
#ifdef SYS_sctp_generic_sendmsg
|
|
struct sockaddr *to = NULL;
|
|
|
|
return (syscall(SYS_sctp_generic_sendmsg, sd,
|
|
data, len, to, 0, sinfo, flags));
|
|
#else
|
|
struct msghdr msg;
|
|
struct iovec iov;
|
|
char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
|
|
struct cmsghdr *cmsg;
|
|
|
|
if (sinfo == NULL) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
iov.iov_base = (char *)data;
|
|
iov.iov_len = len;
|
|
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = cmsgbuf;
|
|
msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
|
|
msg.msg_flags = 0;
|
|
cmsg = (struct cmsghdr *)cmsgbuf;
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_SNDRCV;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
|
|
memcpy(CMSG_DATA(cmsg), sinfo, sizeof(struct sctp_sndrcvinfo));
|
|
return (sendmsg(sd, &msg, flags));
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
ssize_t
|
|
sctp_sendx(int sd, const void *msg, size_t msg_len,
|
|
struct sockaddr *addrs, int addrcnt,
|
|
struct sctp_sndrcvinfo *sinfo,
|
|
int flags)
|
|
{
|
|
struct sctp_sndrcvinfo __sinfo;
|
|
ssize_t ret;
|
|
int i, cnt, *aa, saved_errno;
|
|
char *buf;
|
|
int no_end_cx = 0;
|
|
size_t len, add_len;
|
|
struct sockaddr *at;
|
|
|
|
if (addrs == NULL) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
#ifdef SYS_sctp_generic_sendmsg
|
|
if (addrcnt == 1) {
|
|
socklen_t l;
|
|
|
|
/*
|
|
* Quick way, we don't need to do a connectx so lets use the
|
|
* syscall directly.
|
|
*/
|
|
l = addrs->sa_len;
|
|
return (syscall(SYS_sctp_generic_sendmsg, sd,
|
|
msg, msg_len, addrs, l, sinfo, flags));
|
|
}
|
|
#endif
|
|
|
|
len = sizeof(int);
|
|
at = addrs;
|
|
cnt = 0;
|
|
/* validate all the addresses and get the size */
|
|
for (i = 0; i < addrcnt; i++) {
|
|
if (at->sa_family == AF_INET) {
|
|
add_len = sizeof(struct sockaddr_in);
|
|
} else if (at->sa_family == AF_INET6) {
|
|
add_len = sizeof(struct sockaddr_in6);
|
|
} else {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
len += add_len;
|
|
at = (struct sockaddr *)((caddr_t)at + add_len);
|
|
cnt++;
|
|
}
|
|
/* do we have any? */
|
|
if (cnt == 0) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
buf = malloc(len);
|
|
if (buf == NULL) {
|
|
errno = ENOMEM;
|
|
return (-1);
|
|
}
|
|
aa = (int *)buf;
|
|
*aa = cnt;
|
|
aa++;
|
|
memcpy((caddr_t)aa, addrs, (size_t)(len - sizeof(int)));
|
|
ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf,
|
|
(socklen_t) len);
|
|
|
|
free(buf);
|
|
if (ret != 0) {
|
|
if (errno == EALREADY) {
|
|
no_end_cx = 1;
|
|
goto continue_send;
|
|
}
|
|
return (ret);
|
|
}
|
|
continue_send:
|
|
if (sinfo == NULL) {
|
|
sinfo = &__sinfo;
|
|
memset(&__sinfo, 0, sizeof(__sinfo));
|
|
}
|
|
sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
|
|
if (sinfo->sinfo_assoc_id == 0) {
|
|
(void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
|
|
(socklen_t) addrs->sa_len);
|
|
errno = ENOENT;
|
|
return (-1);
|
|
}
|
|
ret = sctp_send(sd, msg, msg_len, sinfo, flags);
|
|
saved_errno = errno;
|
|
if (no_end_cx == 0)
|
|
(void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
|
|
(socklen_t) addrs->sa_len);
|
|
|
|
errno = saved_errno;
|
|
return (ret);
|
|
}
|
|
|
|
ssize_t
|
|
sctp_sendmsgx(int sd,
|
|
const void *msg,
|
|
size_t len,
|
|
struct sockaddr *addrs,
|
|
int addrcnt,
|
|
uint32_t ppid,
|
|
uint32_t flags,
|
|
uint16_t stream_no,
|
|
uint32_t timetolive,
|
|
uint32_t context)
|
|
{
|
|
struct sctp_sndrcvinfo sinfo;
|
|
|
|
memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
|
|
sinfo.sinfo_ppid = ppid;
|
|
sinfo.sinfo_flags = flags;
|
|
sinfo.sinfo_ssn = stream_no;
|
|
sinfo.sinfo_timetolive = timetolive;
|
|
sinfo.sinfo_context = context;
|
|
return (sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0));
|
|
}
|
|
|
|
ssize_t
|
|
sctp_recvmsg(int s,
|
|
void *dbuf,
|
|
size_t len,
|
|
struct sockaddr *from,
|
|
socklen_t * fromlen,
|
|
struct sctp_sndrcvinfo *sinfo,
|
|
int *msg_flags)
|
|
{
|
|
#ifdef SYS_sctp_generic_recvmsg
|
|
struct iovec iov;
|
|
|
|
iov.iov_base = dbuf;
|
|
iov.iov_len = len;
|
|
return (syscall(SYS_sctp_generic_recvmsg, s,
|
|
&iov, 1, from, fromlen, sinfo, msg_flags));
|
|
#else
|
|
ssize_t sz;
|
|
struct msghdr msg;
|
|
struct iovec iov;
|
|
char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
|
|
struct cmsghdr *cmsg;
|
|
|
|
if (msg_flags == NULL) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
iov.iov_base = dbuf;
|
|
iov.iov_len = len;
|
|
msg.msg_name = (caddr_t)from;
|
|
if (fromlen == NULL)
|
|
msg.msg_namelen = 0;
|
|
else
|
|
msg.msg_namelen = *fromlen;
|
|
msg.msg_iov = &iov;
|
|
msg.msg_iovlen = 1;
|
|
msg.msg_control = cmsgbuf;
|
|
msg.msg_controllen = sizeof(cmsgbuf);
|
|
msg.msg_flags = 0;
|
|
sz = recvmsg(s, &msg, *msg_flags);
|
|
*msg_flags = msg.msg_flags;
|
|
if (sz <= 0) {
|
|
return (sz);
|
|
}
|
|
if (sinfo) {
|
|
sinfo->sinfo_assoc_id = 0;
|
|
}
|
|
if ((msg.msg_controllen > 0) && (sinfo != NULL)) {
|
|
/*
|
|
* parse through and see if we find the sctp_sndrcvinfo (if
|
|
* the user wants it).
|
|
*/
|
|
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
|
|
if (cmsg->cmsg_level != IPPROTO_SCTP) {
|
|
continue;
|
|
}
|
|
if (cmsg->cmsg_type == SCTP_SNDRCV) {
|
|
memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_sndrcvinfo));
|
|
break;
|
|
}
|
|
if (cmsg->cmsg_type == SCTP_EXTRCV) {
|
|
/*
|
|
* Let's hope that the user provided enough
|
|
* enough memory. At least he asked for more
|
|
* information.
|
|
*/
|
|
memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_extrcvinfo));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return (sz);
|
|
#endif
|
|
}
|
|
|
|
ssize_t
|
|
sctp_recvv(int sd,
|
|
const struct iovec *iov,
|
|
int iovlen,
|
|
struct sockaddr *from,
|
|
socklen_t * fromlen,
|
|
void *info,
|
|
socklen_t * infolen,
|
|
unsigned int *infotype,
|
|
int *flags)
|
|
{
|
|
char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
|
|
struct msghdr msg;
|
|
struct cmsghdr *cmsg;
|
|
ssize_t ret;
|
|
struct sctp_rcvinfo *rcvinfo;
|
|
struct sctp_nxtinfo *nxtinfo;
|
|
|
|
if (((info != NULL) && (infolen == NULL)) ||
|
|
((info == NULL) && (infolen != NULL) && (*infolen != 0)) ||
|
|
((info != NULL) && (infotype == NULL))) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if (infotype) {
|
|
*infotype = SCTP_RECVV_NOINFO;
|
|
}
|
|
msg.msg_name = from;
|
|
if (fromlen == NULL) {
|
|
msg.msg_namelen = 0;
|
|
} else {
|
|
msg.msg_namelen = *fromlen;
|
|
}
|
|
msg.msg_iov = (struct iovec *)iov;
|
|
msg.msg_iovlen = iovlen;
|
|
msg.msg_control = cmsgbuf;
|
|
msg.msg_controllen = sizeof(cmsgbuf);
|
|
msg.msg_flags = 0;
|
|
ret = recvmsg(sd, &msg, *flags);
|
|
*flags = msg.msg_flags;
|
|
if ((ret > 0) &&
|
|
(msg.msg_controllen > 0) &&
|
|
(infotype != NULL) &&
|
|
(infolen != NULL) &&
|
|
(*infolen > 0)) {
|
|
rcvinfo = NULL;
|
|
nxtinfo = NULL;
|
|
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
|
|
if (cmsg->cmsg_level != IPPROTO_SCTP) {
|
|
continue;
|
|
}
|
|
if (cmsg->cmsg_type == SCTP_RCVINFO) {
|
|
rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
|
|
if (nxtinfo != NULL) {
|
|
break;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
if (cmsg->cmsg_type == SCTP_NXTINFO) {
|
|
nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg);
|
|
if (rcvinfo != NULL) {
|
|
break;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if (rcvinfo != NULL) {
|
|
if ((nxtinfo != NULL) && (*infolen >= sizeof(struct sctp_recvv_rn))) {
|
|
struct sctp_recvv_rn *rn_info;
|
|
|
|
rn_info = (struct sctp_recvv_rn *)info;
|
|
rn_info->recvv_rcvinfo = *rcvinfo;
|
|
rn_info->recvv_nxtinfo = *nxtinfo;
|
|
*infolen = (socklen_t) sizeof(struct sctp_recvv_rn);
|
|
*infotype = SCTP_RECVV_RN;
|
|
} else if (*infolen >= sizeof(struct sctp_rcvinfo)) {
|
|
memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo));
|
|
*infolen = (socklen_t) sizeof(struct sctp_rcvinfo);
|
|
*infotype = SCTP_RECVV_RCVINFO;
|
|
}
|
|
} else if (nxtinfo != NULL) {
|
|
if (*infolen >= sizeof(struct sctp_nxtinfo)) {
|
|
memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo));
|
|
*infolen = (socklen_t) sizeof(struct sctp_nxtinfo);
|
|
*infotype = SCTP_RECVV_NXTINFO;
|
|
}
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
ssize_t
|
|
sctp_sendv(int sd,
|
|
const struct iovec *iov, int iovcnt,
|
|
struct sockaddr *addrs, int addrcnt,
|
|
void *info, socklen_t infolen, unsigned int infotype,
|
|
int flags)
|
|
{
|
|
ssize_t ret;
|
|
int i;
|
|
socklen_t addr_len;
|
|
struct msghdr msg;
|
|
in_port_t port;
|
|
struct sctp_sendv_spa *spa_info;
|
|
struct cmsghdr *cmsg;
|
|
char *cmsgbuf;
|
|
struct sockaddr *addr;
|
|
struct sockaddr_in *addr_in;
|
|
struct sockaddr_in6 *addr_in6;
|
|
|
|
if ((addrcnt < 0) ||
|
|
(iovcnt < 0) ||
|
|
((addrs == NULL) && (addrcnt > 0)) ||
|
|
((addrs != NULL) && (addrcnt == 0)) ||
|
|
((iov == NULL) && (iovcnt > 0)) ||
|
|
((iov != NULL) && (iovcnt == 0))) {
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
|
|
CMSG_SPACE(sizeof(struct sctp_prinfo)) +
|
|
CMSG_SPACE(sizeof(struct sctp_authinfo)) +
|
|
(size_t)addrcnt * CMSG_SPACE(sizeof(struct in6_addr)));
|
|
if (cmsgbuf == NULL) {
|
|
errno = ENOMEM;
|
|
return (-1);
|
|
}
|
|
msg.msg_control = cmsgbuf;
|
|
msg.msg_controllen = 0;
|
|
cmsg = (struct cmsghdr *)cmsgbuf;
|
|
switch (infotype) {
|
|
case SCTP_SENDV_NOINFO:
|
|
if ((infolen != 0) || (info != NULL)) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
break;
|
|
case SCTP_SENDV_SNDINFO:
|
|
if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_SNDINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
|
|
memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
|
|
break;
|
|
case SCTP_SENDV_PRINFO:
|
|
if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_PRINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
|
|
memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
|
|
break;
|
|
case SCTP_SENDV_AUTHINFO:
|
|
if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_AUTHINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
|
|
memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
|
|
break;
|
|
case SCTP_SENDV_SPA:
|
|
if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
spa_info = (struct sctp_sendv_spa *)info;
|
|
if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) {
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_SNDINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
|
|
memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
|
|
}
|
|
if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) {
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_PRINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
|
|
memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
|
|
}
|
|
if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) {
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_AUTHINFO;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
|
|
memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
|
|
}
|
|
break;
|
|
default:
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
addr = addrs;
|
|
msg.msg_name = NULL;
|
|
msg.msg_namelen = 0;
|
|
|
|
for (i = 0; i < addrcnt; i++) {
|
|
switch (addr->sa_family) {
|
|
case AF_INET:
|
|
addr_len = (socklen_t) sizeof(struct sockaddr_in);
|
|
addr_in = (struct sockaddr_in *)addr;
|
|
if (addr_in->sin_len != addr_len) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if (i == 0) {
|
|
port = addr_in->sin_port;
|
|
} else {
|
|
if (port == addr_in->sin_port) {
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_DSTADDRV4;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
|
|
memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr)));
|
|
} else {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
}
|
|
break;
|
|
case AF_INET6:
|
|
addr_len = (socklen_t) sizeof(struct sockaddr_in6);
|
|
addr_in6 = (struct sockaddr_in6 *)addr;
|
|
if (addr_in6->sin6_len != addr_len) {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if (i == 0) {
|
|
port = addr_in6->sin6_port;
|
|
} else {
|
|
if (port == addr_in6->sin6_port) {
|
|
cmsg->cmsg_level = IPPROTO_SCTP;
|
|
cmsg->cmsg_type = SCTP_DSTADDRV6;
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr));
|
|
memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr));
|
|
msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr));
|
|
cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr)));
|
|
} else {
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
free(cmsgbuf);
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
if (i == 0) {
|
|
msg.msg_name = addr;
|
|
msg.msg_namelen = addr_len;
|
|
}
|
|
addr = (struct sockaddr *)((caddr_t)addr + addr_len);
|
|
}
|
|
if (msg.msg_controllen == 0) {
|
|
msg.msg_control = NULL;
|
|
}
|
|
msg.msg_iov = (struct iovec *)iov;
|
|
msg.msg_iovlen = iovcnt;
|
|
msg.msg_flags = 0;
|
|
ret = sendmsg(sd, &msg, flags);
|
|
free(cmsgbuf);
|
|
return (ret);
|
|
}
|
|
|
|
|
|
#if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
|
|
|
|
int
|
|
sctp_peeloff(int sd, sctp_assoc_t assoc_id)
|
|
{
|
|
/* NOT supported, return invalid sd */
|
|
errno = ENOTSUP;
|
|
return (-1);
|
|
}
|
|
|
|
#endif
|
|
#if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
|
|
int
|
|
sctp_peeloff(int sd, sctp_assoc_t assoc_id)
|
|
{
|
|
return (syscall(SYS_sctp_peeloff, sd, assoc_id));
|
|
}
|
|
|
|
#endif
|
|
|
|
#undef SCTP_CONTROL_VEC_SIZE_RCV
|