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-rw-r--r--sysdep/unix/io.c224
1 files changed, 161 insertions, 63 deletions
diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 330aea4..cd5c5db 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -627,6 +627,12 @@ fill_in_sockaddr(sockaddr *sa, ip_addr a, unsigned port)
set_inaddr(&sa->sin6_addr, a);
}
+static inline void
+fill_in_sockifa(sockaddr *sa, struct iface *ifa)
+{
+ sa->sin6_scope_id = ifa ? ifa->index : 0;
+}
+
void
get_sockaddr(struct sockaddr_in6 *sa, ip_addr *a, unsigned *port, int check)
{
@@ -652,6 +658,11 @@ fill_in_sockaddr(sockaddr *sa, ip_addr a, unsigned port)
set_inaddr(&sa->sin_addr, a);
}
+static inline void
+fill_in_sockifa(sockaddr *sa, struct iface *ifa)
+{
+}
+
void
get_sockaddr(struct sockaddr_in *sa, ip_addr *a, unsigned *port, int check)
{
@@ -670,8 +681,7 @@ sk_set_ttl_int(sock *s)
{
int one = 1;
#ifdef IPV6
- if (s->type != SK_UDP_MC && s->type != SK_IP_MC &&
- setsockopt(s->fd, SOL_IPV6, IPV6_UNICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0)
+ if (setsockopt(s->fd, SOL_IPV6, IPV6_UNICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0)
return "IPV6_UNICAST_HOPS";
#else
if (setsockopt(s->fd, SOL_IP, IP_TTL, &s->ttl, sizeof(s->ttl)) < 0)
@@ -768,6 +778,151 @@ sk_set_md5_auth(sock *s, ip_addr a, char *passwd)
return sk_set_md5_auth_int(s, &sa, passwd);
}
+int
+sk_set_broadcast(sock *s, int enable)
+{
+ if (setsockopt(s->fd, SOL_SOCKET, SO_BROADCAST, &enable, sizeof(enable)) < 0)
+ {
+ log(L_ERR "sk_set_broadcast: SO_BROADCAST: %m");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+#ifdef IPV6
+
+int
+sk_set_ipv6_checksum(sock *s, int offset)
+{
+ if (setsockopt(s->fd, IPPROTO_IPV6, IPV6_CHECKSUM, &offset, sizeof(offset)) < 0)
+ {
+ log(L_ERR "sk_set_ipv6_checksum: IPV6_CHECKSUM: %m");
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+sk_setup_multicast(sock *s)
+{
+ char *err;
+ int zero = 0;
+ int index;
+
+ ASSERT(s->iface && s->iface->addr);
+
+ index = s->iface->index;
+ if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0)
+ ERR("IPV6_MULTICAST_HOPS");
+ if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_LOOP, &zero, sizeof(zero)) < 0)
+ ERR("IPV6_MULTICAST_LOOP");
+ if (setsockopt(s->fd, SOL_IPV6, IPV6_MULTICAST_IF, &index, sizeof(index)) < 0)
+ ERR("IPV6_MULTICAST_IF");
+
+ return 0;
+
+bad:
+ log(L_ERR "sk_setup_multicast: %s: %m", err);
+ return -1;
+}
+
+int
+sk_join_group(sock *s, ip_addr maddr)
+{
+ struct ipv6_mreq mreq;
+
+ set_inaddr(&mreq.ipv6mr_multiaddr, maddr);
+
+#ifdef CONFIG_IPV6_GLIBC_20
+ mreq.ipv6mr_ifindex = s->iface->index;
+#else
+ mreq.ipv6mr_interface = s->iface->index;
+#endif
+
+ /* RFC 2553 says IPV6_JOIN_GROUP */
+ if (setsockopt(s->fd, SOL_IPV6, IPV6_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
+ {
+ log(L_ERR "sk_join_group: IPV6_ADD_MEMBERSHIP: %m");
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+sk_leave_group(sock *s, ip_addr maddr)
+{
+ struct ipv6_mreq mreq;
+
+ set_inaddr(&mreq.ipv6mr_multiaddr, maddr);
+
+#ifdef CONFIG_IPV6_GLIBC_20
+ mreq.ipv6mr_ifindex = s->iface->index;
+#else
+ mreq.ipv6mr_interface = s->iface->index;
+#endif
+
+ /* RFC 2553 says IPV6_LEAVE_GROUP */
+ if (setsockopt(s->fd, SOL_IPV6, IPV6_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
+ {
+ log(L_ERR "sk_leave_group: IPV6_DROP_MEMBERSHIP: %m");
+ return -1;
+ }
+
+ return 0;
+}
+
+#else /* IPV4 */
+
+int
+sk_setup_multicast(sock *s)
+{
+ char *err;
+
+ ASSERT(s->iface && s->iface->addr);
+
+ if (err = sysio_setup_multicast(s))
+ {
+ log(L_ERR "sk_setup_multicast: %s: %m", err);
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+sk_join_group(sock *s, ip_addr maddr)
+{
+ char *err;
+
+ if (err = sysio_join_group(s, maddr))
+ {
+ log(L_ERR "sk_join_group: %s: %m", err);
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+sk_leave_group(sock *s, ip_addr maddr)
+{
+ char *err;
+
+ if (err = sysio_leave_group(s, maddr))
+ {
+ log(L_ERR "sk_leave_group: %s: %m", err);
+ return -1;
+ }
+
+ return 0;
+}
+
+#endif
+
static void
sk_tcp_connected(sock *s)
@@ -841,11 +996,9 @@ sk_open(sock *s)
fd = socket(BIRD_PF, SOCK_STREAM, IPPROTO_TCP);
break;
case SK_UDP:
- case SK_UDP_MC:
fd = socket(BIRD_PF, SOCK_DGRAM, IPPROTO_UDP);
break;
case SK_IP:
- case SK_IP_MC:
fd = socket(BIRD_PF, SOCK_RAW, s->dport);
break;
case SK_MAGIC:
@@ -861,61 +1014,11 @@ sk_open(sock *s)
if (err = sk_setup(s))
goto bad;
- switch (type)
- {
- case SK_UDP:
- case SK_IP:
- if (s->iface) /* It's a broadcast socket */
-#ifdef IPV6
- bug("IPv6 has no broadcasts");
-#else
- if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0)
- ERR("SO_BROADCAST");
-#endif
- break;
- case SK_UDP_MC:
- case SK_IP_MC:
- {
-#ifdef IPV6
- /* Fortunately, IPv6 socket interface is recent enough and therefore standardized */
- ASSERT(s->iface && s->iface->addr);
- if (ipa_nonzero(s->daddr))
- {
- int t = s->iface->index;
- int zero = 0;
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &s->ttl, sizeof(s->ttl)) < 0)
- ERR("IPV6_MULTICAST_HOPS");
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_LOOP, &zero, sizeof(zero)) < 0)
- ERR("IPV6_MULTICAST_LOOP");
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_IF, &t, sizeof(t)) < 0)
- ERR("IPV6_MULTICAST_IF");
- }
- if (has_src)
- {
- struct ipv6_mreq mreq;
- set_inaddr(&mreq.ipv6mr_multiaddr, s->daddr);
-#ifdef CONFIG_IPV6_GLIBC_20
- mreq.ipv6mr_ifindex = s->iface->index;
-#else
- mreq.ipv6mr_interface = s->iface->index;
-#endif /* CONFIG_IPV6_GLIBC_20 */
- if (setsockopt(fd, SOL_IPV6, IPV6_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
- ERR("IPV6_ADD_MEMBERSHIP");
- }
-#else
- /* With IPv4 there are zillions of different socket interface variants. Ugh. */
- ASSERT(s->iface && s->iface->addr);
- if (err = sysio_mcast_join(s))
- goto bad;
-#endif /* IPV6 */
- break;
- }
- }
if (has_src)
{
int port;
- if (type == SK_IP || type == SK_IP_MC)
+ if (type == SK_IP)
port = 0;
else
{
@@ -924,12 +1027,8 @@ sk_open(sock *s)
ERR("SO_REUSEADDR");
}
fill_in_sockaddr(&sa, s->saddr, port);
-#ifdef CONFIG_SKIP_MC_BIND
- if ((type != SK_UDP_MC) && (type != SK_IP_MC) &&
- bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0)
-#else
+ fill_in_sockifa(&sa, s->iface);
if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0)
-#endif
ERR("bind");
}
fill_in_sockaddr(&sa, s->daddr, s->dport);
@@ -1050,16 +1149,15 @@ sk_maybe_write(sock *s)
s->ttx = s->tpos = s->tbuf;
return 1;
case SK_UDP:
- case SK_UDP_MC:
case SK_IP:
- case SK_IP_MC:
{
sockaddr sa;
if (s->tbuf == s->tpos)
return 1;
- fill_in_sockaddr(&sa, s->faddr, s->fport);
+ fill_in_sockaddr(&sa, s->faddr, s->fport);
+ fill_in_sockifa(&sa, s->iface);
e = sendto(s->fd, s->tbuf, s->tpos - s->tbuf, 0, (struct sockaddr *) &sa, sizeof(sa));
if (e < 0)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 07:45:32 +0100