#include "socket.h"
#include "log.h"
+/* this is a portability hack */
+#ifndef IPV6_ADD_MEMBERSHIP
+#ifdef IPV6_JOIN_GROUP
+#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
+#endif
+#endif
+
+#ifndef IPV6_DROP_MEMBERSHIP
+#ifdef IPV6_LEAVE_GROUP
+#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
+#endif
+#endif
+
static void mdns_mcast_group_ipv4(struct sockaddr_in *ret_sa) {
assert(ret_sa);
mreq.imr_multiaddr = sa.sin_addr;
mreq.imr_ifindex = idx;
- if (setsockopt(fd, SOL_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
- avahi_log_warn("IP_ADD_MEMBERSHIP failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
+ avahi_log_warn("IP_ADD_MEMBERSHIP failed: %s", strerror(errno));
return -1;
}
mreq6.ipv6mr_multiaddr = sa6.sin6_addr;
mreq6.ipv6mr_interface = idx;
- if (setsockopt(fd, SOL_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
- avahi_log_warn("IPV6_ADD_MEMBERSHIP failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
+ avahi_log_warn("IPV6_ADD_MEMBERSHIP failed: %s", strerror(errno));
return -1;
}
mreq.imr_multiaddr = sa.sin_addr;
mreq.imr_ifindex = idx;
- if (setsockopt(fd, SOL_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
- avahi_log_warn("IP_DROP_MEMBERSHIP failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
+ avahi_log_warn("IP_DROP_MEMBERSHIP failed: %s", strerror(errno));
return -1;
}
mreq6.ipv6mr_multiaddr = sa6.sin6_addr;
mreq6.ipv6mr_interface = idx;
- if (setsockopt(fd, SOL_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
- avahi_log_warn("IPV6_DROP_MEMBERSHIP failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
+ avahi_log_warn("IPV6_DROP_MEMBERSHIP failed: %s", strerror(errno));
return -1;
}
if (bind(fd, sa, l) < 0) {
if (errno != EADDRINUSE) {
- avahi_log_warn("bind() failed: %s\n", strerror(errno));
+ avahi_log_warn("bind() failed: %s", strerror(errno));
return -1;
}
/* Try again, this time with SO_REUSEADDR set */
yes = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("SO_REUSEADDR failed: %s\n", strerror(errno));
+ avahi_log_warn("SO_REUSEADDR failed: %s", strerror(errno));
return -1;
}
if (bind(fd, sa, l) < 0) {
- avahi_log_warn("bind() failed: %s\n", strerror(errno));
+ avahi_log_warn("bind() failed: %s", strerror(errno));
return -1;
}
} else {
yes = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("SO_REUSEADDR failed: %s\n", strerror(errno));
+ avahi_log_warn("SO_REUSEADDR failed: %s", strerror(errno));
return -1;
}
}
return 0;
}
-int avahi_open_socket_ipv4(void) {
+int avahi_open_socket_ipv4(int no_reuse) {
struct sockaddr_in local;
- int fd = -1, ttl, yes;
+ int fd = -1, ttl, yes, r;
if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- avahi_log_warn("socket() failed: %s\n", strerror(errno));
+ avahi_log_warn("socket() failed: %s", strerror(errno));
goto fail;
}
ttl = 255;
- if (setsockopt(fd, SOL_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0) {
- avahi_log_warn("IP_MULTICAST_TTL failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0) {
+ avahi_log_warn("IP_MULTICAST_TTL failed: %s", strerror(errno));
goto fail;
}
ttl = 255;
- if (setsockopt(fd, SOL_IP, IP_TTL, &ttl, sizeof(ttl)) < 0) {
- avahi_log_warn("IP_TTL failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_TTL, &ttl, sizeof(ttl)) < 0) {
+ avahi_log_warn("IP_TTL failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IP_MULTICAST_LOOP failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IP_MULTICAST_LOOP failed: %s", strerror(errno));
goto fail;
}
local.sin_family = AF_INET;
local.sin_port = htons(AVAHI_MDNS_PORT);
- if (bind_with_warn(fd, (struct sockaddr*) &local, sizeof(local)) < 0)
+ if (no_reuse)
+ r = bind(fd, (struct sockaddr*) &local, sizeof(local));
+ else
+ r = bind_with_warn(fd, (struct sockaddr*) &local, sizeof(local));
+
+ if (r < 0)
goto fail;
yes = 1;
- if (setsockopt(fd, SOL_IP, IP_RECVTTL, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IP_RECVTTL failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_RECVTTL, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IP_RECVTTL failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IP, IP_PKTINFO, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IP_PKTINFO failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IP_PKTINFO failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_cloexec(fd) < 0) {
- avahi_log_warn("FD_CLOEXEC failed: %s\n", strerror(errno));
+ avahi_log_warn("FD_CLOEXEC failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_nonblock(fd) < 0) {
- avahi_log_warn("O_NONBLOCK failed: %s\n", strerror(errno));
+ avahi_log_warn("O_NONBLOCK failed: %s", strerror(errno));
goto fail;
}
return -1;
}
-int avahi_open_socket_ipv6(void) {
+int avahi_open_socket_ipv6(int no_reuse) {
struct sockaddr_in6 sa, local;
- int fd = -1, ttl, yes;
+ int fd = -1, ttl, yes, r;
mdns_mcast_group_ipv6(&sa);
if ((fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- avahi_log_warn("socket() failed: %s\n", strerror(errno));
+ avahi_log_warn("socket() failed: %s", strerror(errno));
goto fail;
}
ttl = 255;
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_HOPS, &ttl, sizeof(ttl)) < 0) {
- avahi_log_warn("IPV6_MULTICAST_HOPS failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &ttl, sizeof(ttl)) < 0) {
+ avahi_log_warn("IPV6_MULTICAST_HOPS failed: %s", strerror(errno));
goto fail;
}
ttl = 255;
- if (setsockopt(fd, SOL_IPV6, IPV6_UNICAST_HOPS, &ttl, sizeof(ttl)) < 0) {
- avahi_log_warn("IPV6_UNICAST_HOPS failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &ttl, sizeof(ttl)) < 0) {
+ avahi_log_warn("IPV6_UNICAST_HOPS failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IPV6_V6ONLY failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IPV6_V6ONLY failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IPV6_MULTICAST_LOOP failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IPV6_MULTICAST_LOOP failed: %s", strerror(errno));
goto fail;
}
local.sin6_family = AF_INET6;
local.sin6_port = htons(AVAHI_MDNS_PORT);
- if (bind_with_warn(fd, (struct sockaddr*) &local, sizeof(local)) < 0)
+ if (no_reuse)
+ r = bind(fd, (struct sockaddr*) &local, sizeof(local));
+ else
+ r = bind_with_warn(fd, (struct sockaddr*) &local, sizeof(local));
+
+ if (r < 0)
goto fail;
yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_HOPLIMIT, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IPV6_HOPLIMIT failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_HOPLIMIT, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IPV6_HOPLIMIT failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_PKTINFO, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IPV6_PKTINFO failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IPV6_PKTINFO failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_cloexec(fd) < 0) {
- avahi_log_warn("FD_CLOEXEC failed: %s\n", strerror(errno));
+ avahi_log_warn("FD_CLOEXEC failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_nonblock(fd) < 0) {
- avahi_log_warn("O_NONBLOCK failed: %s\n", strerror(errno));
+ avahi_log_warn("O_NONBLOCK failed: %s", strerror(errno));
goto fail;
}
break;
if (errno != EAGAIN) {
- avahi_log_debug("sendmsg() failed: %s\n", strerror(errno));
+ avahi_log_debug("sendmsg() failed: %s", strerror(errno));
return -1;
}
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
- if (cmsg->cmsg_level == SOL_IP) {
+ if (cmsg->cmsg_level == IPPROTO_IP) {
if (cmsg->cmsg_type == IP_TTL) {
if (ret_ttl)
*ret_ttl = 0;
for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
- if (cmsg->cmsg_level == SOL_IPV6 && cmsg->cmsg_type == IPV6_HOPLIMIT) {
+ if (cmsg->cmsg_level == IPPROTO_IPV6 && cmsg->cmsg_type == IPV6_HOPLIMIT) {
if (ret_ttl)
*ret_ttl = (uint8_t) (*(int *) CMSG_DATA(cmsg));
found_ttl = 1;
}
- if (cmsg->cmsg_level == SOL_IPV6 && cmsg->cmsg_type == IPV6_PKTINFO) {
+ if (cmsg->cmsg_level == IPPROTO_IPV6 && cmsg->cmsg_type == IPV6_PKTINFO) {
struct in6_pktinfo *i = (struct in6_pktinfo*) CMSG_DATA(cmsg);
if (ret_iface)
int fd = -1, yes;
if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- avahi_log_warn("socket() failed: %s\n", strerror(errno));
+ avahi_log_warn("socket() failed: %s", strerror(errno));
goto fail;
}
local.sin_family = AF_INET;
if (bind(fd, (struct sockaddr*) &local, sizeof(local)) < 0) {
- avahi_log_warn("bind() failed: %s\n", strerror(errno));
+ avahi_log_warn("bind() failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IP, IP_RECVTTL, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IP_RECVTTL failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_RECVTTL, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IP_RECVTTL failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IP, IP_PKTINFO, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IP_PKTINFO failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IP_PKTINFO failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_cloexec(fd) < 0) {
- avahi_log_warn("FD_CLOEXEC failed: %s\n", strerror(errno));
+ avahi_log_warn("FD_CLOEXEC failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_nonblock(fd) < 0) {
- avahi_log_warn("O_NONBLOCK failed: %s\n", strerror(errno));
+ avahi_log_warn("O_NONBLOCK failed: %s", strerror(errno));
goto fail;
}
int fd = -1, yes;
if ((fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- avahi_log_warn("socket() failed: %s\n", strerror(errno));
+ avahi_log_warn("socket() failed: %s", strerror(errno));
goto fail;
}
local.sin6_family = AF_INET6;
if (bind(fd, (struct sockaddr*) &local, sizeof(local)) < 0) {
- avahi_log_warn("bind() failed: %s\n", strerror(errno));
+ avahi_log_warn("bind() failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_HOPLIMIT, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IPV6_HOPLIMIT failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_HOPLIMIT, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IPV6_HOPLIMIT failed: %s", strerror(errno));
goto fail;
}
yes = 1;
- if (setsockopt(fd, SOL_IPV6, IPV6_PKTINFO, &yes, sizeof(yes)) < 0) {
- avahi_log_warn("IPV6_PKTINFO failed: %s\n", strerror(errno));
+ if (setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, &yes, sizeof(yes)) < 0) {
+ avahi_log_warn("IPV6_PKTINFO failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_cloexec(fd) < 0) {
- avahi_log_warn("FD_CLOEXEC failed: %s\n", strerror(errno));
+ avahi_log_warn("FD_CLOEXEC failed: %s", strerror(errno));
goto fail;
}
if (avahi_set_nonblock(fd) < 0) {
- avahi_log_warn("O_NONBLOCK failed: %s\n", strerror(errno));
+ avahi_log_warn("O_NONBLOCK failed: %s", strerror(errno));
goto fail;
}