129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
/*
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* BIRD Internet Routing Daemon -- NetBSD Multicasting and Network Includes
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*
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* (c) 2004 Ondrej Filip <feela@network.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifdef IPV6
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static inline void
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set_inaddr(struct in6_addr * ia, ip_addr a)
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{
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ipa_hton(a);
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memcpy(ia, &a, sizeof(a));
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}
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#else
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#include <net/if.h>
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static inline void
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set_inaddr(struct in_addr * ia, ip_addr a)
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{
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ipa_hton(a);
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memcpy(&ia->s_addr, &a, sizeof(a));
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}
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static inline char *
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sysio_setup_multicast(sock *s)
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{
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struct in_addr m;
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u8 zero = 0;
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u8 ttl = s->ttl;
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if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_LOOP, &zero, sizeof(zero)) < 0)
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return "IP_MULTICAST_LOOP";
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if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0)
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return "IP_MULTICAST_TTL";
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/* This defines where should we send _outgoing_ multicasts */
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set_inaddr(&m, s->iface->addr->ip);
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if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0)
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return "IP_MULTICAST_IF";
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return NULL;
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}
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static inline char *
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sysio_join_group(sock *s, ip_addr maddr)
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{
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struct ip_mreq mreq;
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bzero(&mreq, sizeof(mreq));
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set_inaddr(&mreq.imr_interface, s->iface->addr->ip);
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set_inaddr(&mreq.imr_multiaddr, maddr);
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/* And this one sets interface for _receiving_ multicasts from */
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if (setsockopt(s->fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
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return "IP_ADD_MEMBERSHIP";
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return NULL;
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}
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static inline char *
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sysio_leave_group(sock *s, ip_addr maddr)
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{
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struct ip_mreq mreq;
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bzero(&mreq, sizeof(mreq));
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set_inaddr(&mreq.imr_interface, s->iface->addr->ip);
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set_inaddr(&mreq.imr_multiaddr, maddr);
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/* And this one sets interface for _receiving_ multicasts from */
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if (setsockopt(s->fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
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return "IP_DROP_MEMBERSHIP";
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return NULL;
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}
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#endif
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#include <netinet/tcp.h>
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#ifndef TCP_KEYLEN_MAX
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#define TCP_KEYLEN_MAX 80
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#endif
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#ifndef TCP_SIG_SPI
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#define TCP_SIG_SPI 0x1000
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#endif
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/*
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* FIXME: Passwords has to be set by setkey(8) command. This is the same
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* behaviour like Quagga. We need to add code for SA/SP entries
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* management.
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*/
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static int
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sk_set_md5_auth_int(sock *s, sockaddr *sa, char *passwd)
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{
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int enable = 0;
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if (passwd)
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{
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int len = strlen(passwd);
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enable = len ? TCP_SIG_SPI : 0;
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if (len > TCP_KEYLEN_MAX)
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{
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log(L_ERR "MD5 password too long");
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return -1;
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}
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}
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int rv = setsockopt(s->fd, IPPROTO_TCP, TCP_MD5SIG, &enable, sizeof(enable));
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if (rv < 0)
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{
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if (errno == ENOPROTOOPT)
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log(L_ERR "Kernel does not support TCP MD5 signatures");
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else
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log(L_ERR "sk_set_md5_auth_int: setsockopt: %m");
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}
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return rv;
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}
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