74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/* $OpenBSD: graft.c,v 1.6 2023/06/26 10:08:56 claudio Exp $ */
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/*
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* Copyright (c) 2005, 2006 Esben Norby <norby@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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#include "igmp.h"
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#include "dvmrpd.h"
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#include "dvmrp.h"
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#include "log.h"
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#include "dvmrpe.h"
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/* DVMRP graft packet handling */
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int
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send_graft(struct iface *iface, struct in_addr addr, void *data, int len)
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{
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struct sockaddr_in dst;
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struct ibuf *buf;
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int ret = 0;
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log_debug("send_graft: interface %s addr %s",
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iface->name, inet_ntoa(addr));
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if (iface->passive)
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return (0);
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if ((buf = ibuf_open(iface->mtu - sizeof(struct ip))) == NULL)
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fatal("send_graft");
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/* DVMRP header */
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if (gen_dvmrp_hdr(buf, iface, DVMRP_CODE_GRAFT))
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goto fail;
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dst.sin_family = AF_INET;
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dst.sin_len = sizeof(struct sockaddr_in);
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dst.sin_addr.s_addr = addr.s_addr;
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ret = send_packet(iface, buf, &dst);
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ibuf_free(buf);
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return (ret);
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fail:
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log_warn("send_graft");
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ibuf_free(buf);
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return (-1);
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}
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void
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recv_graft(struct nbr *nbr, char *buf, u_int16_t len)
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{
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log_debug("recv_graft: neighbor ID %s", inet_ntoa(nbr->id));
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return;
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}
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