diff options
author | ume <ume@FreeBSD.org> | 2001-06-03 18:16:39 +0000 |
---|---|---|
committer | ume <ume@FreeBSD.org> | 2001-06-03 18:16:39 +0000 |
commit | 2dd555017d992610a09beeff1425734afa740df7 (patch) | |
tree | 28a1d4bb2f4a9efac2f863f324f9457a2b751cab /usr.sbin/pim6sd/pim6.c | |
parent | 27ef13f896793993f071c86908a1c7a1def39c8d (diff) | |
download | FreeBSD-src-2dd555017d992610a09beeff1425734afa740df7.zip FreeBSD-src-2dd555017d992610a09beeff1425734afa740df7.tar.gz |
Remove pim6[ds]d from the tree. The software had a restrictive license
than we can handle. pim6[ds]d are available as ports instead.
Diffstat (limited to 'usr.sbin/pim6sd/pim6.c')
-rw-r--r-- | usr.sbin/pim6sd/pim6.c | 518 |
1 files changed, 0 insertions, 518 deletions
diff --git a/usr.sbin/pim6sd/pim6.c b/usr.sbin/pim6sd/pim6.c deleted file mode 100644 index 2741693..0000000 --- a/usr.sbin/pim6sd/pim6.c +++ /dev/null @@ -1,518 +0,0 @@ -/* - * Copyright (C) 1999 LSIIT Laboratory. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -/* - * Copyright (C) 1998 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ -/* - * Questions concerning this software should be directed to - * Mickael Hoerdt (hoerdt@clarinet.u-strasbg.fr) LSIIT Strasbourg. - * - */ -/* - * This program has been derived from pim6dd. - * The pim6dd program is covered by the license in the accompanying file - * named "LICENSE.pim6dd". - */ -/* - * This program has been derived from pimd. - * The pimd program is covered by the license in the accompanying file - * named "LICENSE.pimd". - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/uio.h> -#include <errno.h> -#include <netinet/in.h> -#include <string.h> -#include <netinet6/ip6_mroute.h> -#include <netinet6/pim6.h> -#include <netinet/ip6.h> -#include <arpa/inet.h> -#include <stdlib.h> -#include <syslog.h> -#include <signal.h> -#include "mld6.h" -#include "defs.h" -#include "kern.h" -#include "pim6.h" -#include "pimd.h" -#include "pim6_proto.h" -#include "inet6.h" -#include "debug.h" - -struct sockaddr_in6 allpim6routers_group; -int pim6_socket; -char *pim6_recv_buf; -char *pim6_send_buf; - -static struct sockaddr_in6 from; -static struct iovec sndiovpim[2]; -static struct iovec rcviovpim[2]; -static struct msghdr sndmhpim, - rcvmhpim; -static u_char *sndcmsgbufpim = NULL; -static int sndcmsglen; -static u_char *rcvcmsgbufpim = NULL; -static int rcvcmsglen; - - -/* - * Local function definitions. - */ -static void pim6_read __P((int f, fd_set *rfd)); -static void accept_pim6 __P((int recvlen)); -static int pim6_cksum __P((u_short *, struct in6_addr *, - struct in6_addr *, int)); - - - -void -init_pim6() -{ - struct cmsghdr *cmsgp; - int on; - - if ( (pim6_recv_buf = malloc( RECV_BUF_SIZE)) == NULL || - (pim6_send_buf = malloc (RECV_BUF_SIZE)) == NULL) - log(LOG_ERR,errno,"pim6 buffer allocation"); - - IF_DEBUG(DEBUG_KERN) - log(LOG_DEBUG,0,"%d octets allocated for the emit/recept buffer pim6",RECV_BUF_SIZE); - - if( (pim6_socket = socket(AF_INET6,SOCK_RAW,IPPROTO_PIM)) < 0 ) - log(LOG_ERR,errno,"pim6_socket"); - - k_set_rcvbuf(pim6_socket,SO_RECV_BUF_SIZE_MAX,SO_RECV_BUF_SIZE_MIN); - k_set_hlim(pim6_socket,MINHLIM); - k_set_loop(pim6_socket,FALSE); - - memset(&allpim6routers_group, 0, sizeof(allpim6routers_group)); - allpim6routers_group.sin6_len = sizeof(allpim6routers_group); - allpim6routers_group.sin6_family = AF_INET6; - if (inet_pton(AF_INET6, "ff02::d", - (void *)&allpim6routers_group.sin6_addr) != 1 ) - log(LOG_ERR, 0, "inet_pton failed for ff02::d"); - memset(&sockaddr6_d, 0, sizeof(sockaddr6_d)); - sockaddr6_d.sin6_len = sizeof(sockaddr6_d); - sockaddr6_d.sin6_family = AF_INET6; - if (inet_pton(AF_INET6, "ff00::", - (void *)&sockaddr6_d.sin6_addr) != 1) - log(LOG_ERR, 0, "inet_pton failed for ff00::"); - - /* specify to tell receiving interface */ - on = 1; -#ifdef IPV6_RECVPKTINFO - if (setsockopt(pim6_socket, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, - sizeof(on)) < 0) - log(LOG_ERR, errno, "setsockopt(IPV6_RECVPKTINFO)"); -#else - if (setsockopt(pim6_socket, IPPROTO_IPV6, IPV6_PKTINFO, &on, - sizeof(on)) < 0) - log(LOG_ERR, errno, "setsockopt(IPV6_PKTINFO)"); -#endif - - /* initialize msghdr for receiving packets */ - rcviovpim[0].iov_base = (caddr_t) pim6_recv_buf; - rcviovpim[0].iov_len = RECV_BUF_SIZE; - rcvmhpim.msg_name = (caddr_t ) &from; - rcvmhpim.msg_namelen = sizeof (from); - rcvmhpim.msg_iov = rcviovpim; - rcvmhpim.msg_iovlen = 1; - rcvcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)); - if (rcvcmsgbufpim == NULL && - (rcvcmsgbufpim = malloc(rcvcmsglen)) == NULL) - log(LOG_ERR, 0, "malloc failed"); - rcvmhpim.msg_control = (caddr_t ) rcvcmsgbufpim; - rcvmhpim.msg_controllen = rcvcmsglen; - - sndmhpim.msg_namelen=sizeof(struct sockaddr_in6); - sndmhpim.msg_iov=sndiovpim; - sndmhpim.msg_iovlen=1; - sndcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)); - if (sndcmsgbufpim == NULL && - (sndcmsgbufpim = malloc(sndcmsglen)) == NULL) - log(LOG_ERR, 0, "malloc failed"); - sndmhpim.msg_control = (caddr_t)sndcmsgbufpim; - sndmhpim.msg_controllen = sndcmsglen; - cmsgp=(struct cmsghdr *)sndcmsgbufpim; - cmsgp->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); - cmsgp->cmsg_level = IPPROTO_IPV6; - cmsgp->cmsg_type = IPV6_PKTINFO; - - if ( register_input_handler(pim6_socket, pim6_read) <0) - log(LOG_ERR,0,"Registering pim6 socket"); - - /* Initialize the building Join/Prune messages working area */ - build_jp_message_pool = (build_jp_message_t *)NULL; - build_jp_message_pool_counter = 0; -} - -/* Read a PIM message */ - -static void -pim6_read(f, rfd) - int f; - fd_set *rfd; -{ - register int pim6_recvlen; - -#ifdef SYSV - sigset_t block, oblock; -#else - register int omask; -#endif - - pim6_recvlen = recvmsg(pim6_socket,&rcvmhpim,0); - - if (pim6_recvlen < 0) { - if (errno != EINTR) - log(LOG_ERR, errno, "PIM6 recvmsg"); - return; - } - -#ifdef SYSV - (void)sigemptyset(&block); - (void)sigaddset(&block, SIGALRM); - if (sigprocmask(SIG_BLOCK, &block, &oblock) < 0) - log(LOG_ERR, errno, "sigprocmask"); -#else - /* Use of omask taken from main() */ - omask = sigblock(sigmask(SIGALRM)); -#endif /* SYSV */ - - accept_pim6(pim6_recvlen); - -#ifdef SYSV - (void)sigprocmask(SIG_SETMASK, &oblock, (sigset_t *)NULL); -#else - (void)sigsetmask(omask); -#endif /* SYSV */ -} - -static void -accept_pim6(pimlen) - int pimlen; -{ - register struct pim *pim; - struct sockaddr_in6 dst; - struct in6_pktinfo *pi=NULL; - struct sockaddr_in6 *src = (struct sockaddr_in6 *)rcvmhpim.msg_name; - struct cmsghdr *cm; - int ifindex=0; - - /* sanity check */ - if (pimlen < sizeof(pim)) { - log(LOG_WARNING, 0, - "data field too short (%u bytes) for PIM header, from %s", - pimlen, inet6_fmt(&src->sin6_addr)); - return; - } - pim = (struct pim *)rcvmhpim.msg_iov[0].iov_base; - - /* extract vital information via Advanced API */ - for(cm = (struct cmsghdr *)CMSG_FIRSTHDR(&rcvmhpim); - cm; - cm =(struct cmsghdr *)CMSG_NXTHDR(&rcvmhpim , cm )) - { - - if( cm->cmsg_level == IPPROTO_IPV6 && - cm->cmsg_type == IPV6_PKTINFO && - cm->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo))) - { - pi=(struct in6_pktinfo *)(CMSG_DATA(cm)); - dst.sin6_addr=pi->ipi6_addr; - ifindex = pi->ipi6_ifindex; - if (IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr)) - dst.sin6_scope_id = ifindex; - else - dst.sin6_scope_id = 0; - } - } - - if(pi==NULL) - log(LOG_ERR,0,"pim6_socket : unable to get destination packet"); - - if(ifindex==0) - log(LOG_ERR,0,"pim6_socket : unable to get ifindex"); - -#define NOSUCHDEF -#ifdef NOSUCHDEF /* TODO: delete. Too noisy */ - IF_DEBUG(DEBUG_PIM_DETAIL) { - IF_DEBUG(DEBUG_PIM) { - log(LOG_DEBUG, 0, "Receiving %s from %s", - packet_kind(IPPROTO_PIM, pim->pim_type, 0), - inet6_fmt(&src->sin6_addr)); - } - } -#endif /* NOSUCHDEF */ - - - /* Check of PIM version is already done in the kernel */ - - /* - * TODO: check the dest. is ALL_PIM_ROUTERS (if multicast address) - * is it necessary? - */ - /* Checksum verification is done in the kernel. */ - - switch (pim->pim_type) { - case PIM_HELLO: - receive_pim6_hello(src, (char *)(pim), pimlen); - break; - case PIM_REGISTER: - receive_pim6_register(src, &dst, (char *)(pim), pimlen); - break; - case PIM_REGISTER_STOP: - receive_pim6_register_stop(src, &dst, (char *)(pim), pimlen); - break; - case PIM_JOIN_PRUNE: - receive_pim6_join_prune(src, &dst, (char *)(pim), pimlen); - break; - case PIM_BOOTSTRAP: - receive_pim6_bootstrap(src, &dst, (char *)(pim), pimlen); - break; - case PIM_ASSERT: - receive_pim6_assert(src, &dst, (char *)(pim), pimlen); - break; - case PIM_GRAFT: - pim6dstat.in_pim6_graft++; - log(LOG_INFO, 0, "ignore %s from %s", - packet_kind(IPPROTO_PIM, pim->pim_type, 0), - inet6_fmt(&src->sin6_addr)); - break; - case PIM_GRAFT_ACK: - pim6dstat.in_pim6_graft_ack++; - log(LOG_INFO, 0, "ignore %s from %s", - packet_kind(IPPROTO_PIM, pim->pim_type, 0), - inet6_fmt(&src->sin6_addr)); - break; - case PIM_CAND_RP_ADV: - receive_pim6_cand_rp_adv(src, &dst, (char *)(pim), pimlen); - break; - default: - log(LOG_INFO, 0, - "ignore unknown PIM message code %u from %s", - pim->pim_type, - inet6_fmt(&src->sin6_addr)); - break; - } -} - -void -send_pim6(char *buf, struct sockaddr_in6 *src, - struct sockaddr_in6 *dst, int type, int datalen) -{ - struct pim *pim; - int setloop=0; - int ifindex=0; - int sendlen=sizeof(struct pim)+datalen; - struct cmsghdr *cmsgp; - struct in6_pktinfo *sndpktinfo; - - sndiovpim[0].iov_base=(caddr_t)buf; - sndiovpim[0].iov_len=datalen+sizeof(struct pim); - cmsgp=(struct cmsghdr *)sndcmsgbufpim; - sndpktinfo=(struct in6_pktinfo *)CMSG_DATA(cmsgp); - sndmhpim.msg_name=(caddr_t)dst; - - pim = (struct pim *)buf; - pim->pim_type = type; - pim->pim_ver = PIM_PROTOCOL_VERSION; - pim->pim_rsv = 0; - pim->pim_cksum = 0; - - if(pim->pim_type == PIM_REGISTER) - { - sendlen = sizeof(struct pim)+sizeof(pim_register_t); - - } - - pim->pim_cksum = pim6_cksum((u_int16 *)pim, - &src->sin6_addr, &dst->sin6_addr, - sendlen); - - if (IN6_IS_ADDR_MULTICAST(&dst->sin6_addr)) - { - if (!IN6_IS_ADDR_LINKLOCAL(&src->sin6_addr)) - { - log(LOG_WARNING, 0, - "trying to send pim multicast packet " - "with non linklocal src(%s), ignoring", - inet6_fmt(&src->sin6_addr)); - return; - } - sndmhpim.msg_control=NULL; - sndmhpim.msg_controllen=0; - ifindex=src->sin6_scope_id; - - k_set_if(pim6_socket , ifindex); - if( IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, - &allnodes_group.sin6_addr) || - IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, - &allrouters_group.sin6_addr) || - IN6_ARE_ADDR_EQUAL(&dst->sin6_addr, - &allpim6routers_group.sin6_addr)) - { - setloop=1; - k_set_loop(pim6_socket, TRUE); - } - } - else - { - sndmhpim.msg_control = (caddr_t)sndcmsgbufpim; - sndmhpim.msg_controllen = sndcmsglen; - sndpktinfo->ipi6_ifindex=src->sin6_scope_id; - memcpy(&sndpktinfo->ipi6_addr, &src->sin6_addr, - sizeof(sndpktinfo->ipi6_addr)); - } - if (sendmsg(pim6_socket, &sndmhpim, 0) < 0) { - if (errno == ENETDOWN) - check_vif_state(); - else { - log(LOG_WARNING, errno, "sendmsg from %s to %s", - inet6_fmt(&src->sin6_addr), - inet6_fmt(&dst->sin6_addr)); - } - } - - if(setloop) - k_set_loop(pim6_socket, FALSE); - - return; -} - -/* ============================== */ - -/* - * Checksum routine for Internet Protocol family headers (Portable Version). - * - * This routine is very heavily used in the network - * code and should be modified for each CPU to be as fast as possible. - */ - -#define ADDCARRY(x) (x > 65535 ? x -= 65535 : x) -#define REDUCE {l_util.l = sum; sum = l_util.s[0] + l_util.s[1]; ADDCARRY(sum);} - -static union { - u_short phs[4]; - struct { - u_long ph_len; - u_char ph_zero[3]; - u_char ph_nxt; - } ph; -} uph; - -/* - * Our algorithm is simple, using a 32 bit accumulator (sum), we add - * sequential 16 bit words to it, and at the end, fold back all the - * carry bits from the top 16 bits into the lower 16 bits. - */ -int pim6_cksum(u_short *addr, struct in6_addr *src ,struct in6_addr *dst , int len ) -{ - register int nleft = len; - register u_short *w; - register int sum = 0; - u_short answer = 0; - - /* - * First create IP6 pseudo header and calculate a summary. - */ - w = (u_short *)src; - uph.ph.ph_len = htonl(len); - uph.ph.ph_nxt = IPPROTO_PIM; - - /* IPv6 source address */ - sum += w[0]; - /* XXX: necessary? */ - if (!(IN6_IS_ADDR_LINKLOCAL(src) || IN6_IS_ADDR_MC_LINKLOCAL(src))) - sum += w[1]; - sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; - sum += w[6]; sum += w[7]; - /* IPv6 destination address */ - w = (u_short *)dst; - sum += w[0]; - /* XXX: necessary? */ - if (!(IN6_IS_ADDR_LINKLOCAL(dst) || IN6_IS_ADDR_MC_LINKLOCAL(dst))) - sum += w[1]; - sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5]; - sum += w[6]; sum += w[7]; - /* Payload length and upper layer identifier */ - sum += uph.phs[0]; sum += uph.phs[1]; - sum += uph.phs[2]; sum += uph.phs[3]; - - /* - * Secondly calculate a summary of the first mbuf excluding offset. - */ - w = addr; - while (nleft > 1) { - sum += *w++; - nleft -= 2; - } - - /* mop up an odd byte, if necessary */ - if (nleft == 1) { - *(u_char *)(&answer) = *(u_char *)w ; - sum += answer; - } - - /* add back carry outs from top 16 bits to low 16 bits */ - sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */ - sum += (sum >> 16); /* add carry */ - answer = ~sum; /* truncate to 16 bits */ - return(answer); -} |