X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-core%2Fsocket.c;h=184fa1b9dbf088fd0e739b5d16747fc61c1d1ba1;hb=7ba2b1fcc731085127c9976b1bae4aaaa5b8b7a7;hp=8ec3a312c9ab50bb6395da118dfae06252bf931a;hpb=b96da7bb83742c2b3013206f57d8fd45e5c817d7;p=catta

diff --git a/avahi-core/socket.c b/avahi-core/socket.c
index 8ec3a31..184fa1b 100644
--- a/avahi-core/socket.c
+++ b/avahi-core/socket.c
@@ -456,7 +456,10 @@ int avahi_send_dns_packet_ipv4(int fd, AvahiIfIndex interface, AvahiDnsPacket *p
     struct iovec io;
 #ifdef IP_PKTINFO
     struct cmsghdr *cmsg;
-    uint8_t cmsg_data[CMSG_SPACE(sizeof(struct in_pktinfo))];
+    size_t cmsg_data[( CMSG_SPACE(sizeof(struct in_pktinfo)) / sizeof(size_t)) + 1];
+#elif defined(IP_SENDSRCADDR)
+    struct cmsghdr *cmsg;
+    size_t cmsg_data[( CMSG_SPACE(sizeof(struct in_addr)) / sizeof(size_t)) + 1];
 #endif
 
     assert(fd >= 0);
@@ -503,12 +506,34 @@ int avahi_send_dns_packet_ipv4(int fd, AvahiIfIndex interface, AvahiDnsPacket *p
         msg.msg_control = cmsg_data;
         msg.msg_controllen = sizeof(cmsg_data);
     }
-#else
-#ifdef __GNUC__
-#warning "FIXME: We need some code to set the outgoing interface/local address here if IP_PKTINFO is not available"
-#endif
+#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));
+	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);
+    }
+#elif defined(IP_MULTICAST_IF)
+    {
+        struct in_addr any = { INADDR_ANY };
+	if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, src_address ? (const void*) &src_address->address : (const void*) &any, sizeof(struct in_addr)) < 0) {
+	    avahi_log_warn("IP_MULTICAST_IF failed: %s", strerror(errno));
+	    return -1;
+	}
+    }
+#elif defined(__GNUC__)
+#warning "FIXME: We need some code to set the outgoing interface/local address here if IP_PKTINFO/IP_MULTICAST_IF is not available"
 #endif
-    
+
     return sendmsg_loop(fd, &msg, 0);
 }
 
@@ -517,7 +542,7 @@ int avahi_send_dns_packet_ipv6(int fd, AvahiIfIndex interface, AvahiDnsPacket *p
     struct msghdr msg;
     struct iovec io;
     struct cmsghdr *cmsg;
-    uint8_t cmsg_data[CMSG_SPACE(sizeof(struct in6_pktinfo))];
+    size_t cmsg_data[(CMSG_SPACE(sizeof(struct in6_pktinfo))/sizeof(size_t)) + 1];
 
     assert(fd >= 0);
     assert(p);
@@ -571,7 +596,7 @@ AvahiDnsPacket *avahi_recv_dns_packet_ipv4(int fd, AvahiIPv4Address *ret_src_add
     AvahiDnsPacket *p= NULL;
     struct msghdr msg;
     struct iovec io;
-    uint8_t aux[1024];
+    size_t aux[1024 / sizeof(size_t)]; /* for alignment on ia64 ! */
     ssize_t l;
     struct cmsghdr *cmsg;
     int found_addr = 0;
@@ -672,8 +697,8 @@ AvahiDnsPacket *avahi_recv_dns_packet_ipv4(int fd, AvahiIPv4Address *ret_src_add
             
 #ifdef IP_RECVDSTADDR
                 case IP_RECVDSTADDR:
-                    if (ret_dest_address)
-                        memcpy(&ret_dest_address->address, CMSG_DATA (cmsg), 4);
+                    if (ret_dst_address)
+                        memcpy(&ret_dst_address->address, CMSG_DATA (cmsg), 4);
                     
                     found_addr = 1;
                     break;
@@ -701,7 +726,7 @@ AvahiDnsPacket *avahi_recv_dns_packet_ipv6(int fd, AvahiIPv6Address *ret_src_add
     AvahiDnsPacket *p = NULL;
     struct msghdr msg;
     struct iovec io;
-    uint8_t aux[64];
+    size_t aux[1024 / sizeof(size_t)];
     ssize_t l;
     int ms;
     struct cmsghdr *cmsg;