#include <fcntl.h>
#include <sys/time.h>
#include <sys/ioctl.h>
+#ifdef HAVE_SYS_FILIO_H
+#include <sys/filio.h>
+#endif
#include <assert.h>
#include <sys/types.h>
mdns_mcast_group_ipv4(&sa);
mreq.imr_multiaddr = sa.sin_addr;
+ /* Some network drivers have issues with dropping membership of
+ * mcast groups when the iface is down, but don't allow rejoining
+ * when it comes back up. This is an ugly workaround */
+ if (join)
+ setsockopt(fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq));
+
if (setsockopt(fd, IPPROTO_IP, join ? IP_ADD_MEMBERSHIP : IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
avahi_log_warn("%s failed: %s", join ? "IP_ADD_MEMBERSHIP" : "IP_DROP_MEMBERSHIP", strerror(errno));
return -1;
mreq6.ipv6mr_multiaddr = sa6.sin6_addr;
mreq6.ipv6mr_interface = idx;
+ if (join)
+ setsockopt(fd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6));
+
if (setsockopt(fd, IPPROTO_IPV6, join ? IPV6_ADD_MEMBERSHIP : IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
avahi_log_warn("%s failed: %s", join ? "IPV6_ADD_MEMBERSHIP" : "IPV6_DROP_MEMBERSHIP", strerror(errno));
return -1;
return 0;
}
-int avahi_send_dns_packet_ipv4(int fd, AvahiIfIndex interface, AvahiDnsPacket *p, const AvahiIPv4Address *src_address, const AvahiIPv4Address *dst_address, uint16_t dst_port) {
+int avahi_send_dns_packet_ipv4(
+ int fd,
+ AvahiIfIndex interface,
+ AvahiDnsPacket *p,
+ const AvahiIPv4Address *src_address,
+ const AvahiIPv4Address *dst_address,
+ uint16_t dst_port) {
+
struct sockaddr_in sa;
struct msghdr msg;
struct iovec io;
#ifdef IP_PKTINFO
struct cmsghdr *cmsg;
- size_t cmsg_data[( CMSG_SPACE(sizeof(struct in_pktinfo)) / sizeof(size_t)) + 1];
+ uint8_t cmsg_data[CMSG_SPACE(sizeof(struct in_pktinfo))];
#elif defined(IP_SENDSRCADDR)
struct cmsghdr *cmsg;
- size_t cmsg_data[( CMSG_SPACE(sizeof(struct in_addr)) / sizeof(size_t)) + 1];
+ uint8_t cmsg_data[CMSG_SPACE(sizeof(struct in_addr))];
#endif
assert(fd >= 0);
struct in_pktinfo *pkti;
memset(cmsg_data, 0, sizeof(cmsg_data));
- cmsg = (struct cmsghdr*) cmsg_data;
+ msg.msg_control = cmsg_data;
+ msg.msg_controllen = sizeof(cmsg_data);
+
+ cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
cmsg->cmsg_level = IPPROTO_IP;
cmsg->cmsg_type = IP_PKTINFO;
if (src_address)
pkti->ipi_spec_dst.s_addr = src_address->address;
- msg.msg_control = cmsg_data;
- msg.msg_controllen = sizeof(cmsg_data);
+ msg.msg_controllen = cmsg->cmsg_len;
}
#elif defined(IP_SENDSRCADDR)
if (src_address) {
struct in_addr *addr;
-
- memset(cmsg_data, 0, sizeof(cmsg_data));
- cmsg = (struct cmsghdr*) cmsg_data;
- cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
+
+ memset(cmsg_data, 0, sizeof(cmsg_data));
+ msg.msg_control = cmsg_data;
+ msg.msg_controllen = sizeof(cmsg_data);
+
+ cmsg = CMSG_FIRSTHDR(&msg);
+ cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
cmsg->cmsg_level = IPPROTO_IP;
cmsg->cmsg_type = IP_SENDSRCADDR;
addr = (struct in_addr *)CMSG_DATA(cmsg);
addr->s_addr = src_address->address;
-
- msg.msg_control = cmsg_data;
- msg.msg_controllen = sizeof(cmsg_data);
- }
+
+ msg.msg_controllen = cmsg->cmsg_len;
+}
#elif defined(IP_MULTICAST_IF)
{
struct in_addr any = { INADDR_ANY };
struct msghdr msg;
struct iovec io;
struct cmsghdr *cmsg;
- size_t cmsg_data[(CMSG_SPACE(sizeof(struct in6_pktinfo))/sizeof(size_t)) + 1];
+ uint8_t cmsg_data[CMSG_SPACE(sizeof(struct in6_pktinfo))];
assert(fd >= 0);
assert(p);
if (interface > 0 || src_address) {
struct in6_pktinfo *pkti;
-
+
memset(cmsg_data, 0, sizeof(cmsg_data));
- cmsg = (struct cmsghdr*) cmsg_data;
+ msg.msg_control = cmsg_data;
+ msg.msg_controllen = sizeof(cmsg_data);
+
+ cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
cmsg->cmsg_level = IPPROTO_IPV6;
cmsg->cmsg_type = IPV6_PKTINFO;
if (src_address)
memcpy(&pkti->ipi6_addr, src_address->address, sizeof(src_address->address));
- msg.msg_control = cmsg_data;
- msg.msg_controllen = sizeof(cmsg_data);
+ msg.msg_controllen = cmsg->cmsg_len;
} else {
msg.msg_control = NULL;
msg.msg_controllen = 0;
struct sockaddr_dl *sdl = (struct sockaddr_dl *) CMSG_DATA (cmsg);
if (ret_iface)
+#ifdef __sun
+ *ret_iface = *(uint_t*) sdl;
+#else
*ret_iface = (int) sdl->sdl_index;
+#endif
break;
}