Supported IPv6 DNS query

connman dnsproxy has ignored AAAA record for IPv6.
It makes fail to resolve DNS in IPv6 environment.

Change-Id: I11e83560c522377b2f88c0dfea28df0fb66140a8
Signed-off-by: Seonah Moon <seonah1.moon@samsung.com>

diff --git a/src/dnsproxy.c b/src/dnsproxy.c
index d44de64..5fd4b26 100755 (executable)
--- a/src/dnsproxy.c
+++ b/src/dnsproxy.c
@@ -3126,21 +3126,6 @@ static int parse_request(unsigned char *buf, int len,
                remain -= label_len + 1;
        }
 
-#if defined TIZEN_EXT
-       /* parse DNS query type either A or AAAA
-        * enforce to drop AAAA temporarily (IPv6 not supported)
-        */
-       if (last_label != NULL) {
-               uint16_t *type_p = (uint16_t *)last_label;
-               uint16_t type = ntohs(*type_p);
-
-               if (type == 0x1c) {
-                       DBG("query %s is type AAAA(0x%x)", name, type);
-                       return -ENOENT;
-               }
-       }
-#endif
-
        if (last_label && arcount && remain >= 9 && last_label[4] == 0 &&
                                !memcmp(last_label + 5, opt_edns0_type, 2)) {
                uint16_t edns0_bufsize;
@@ -3665,41 +3650,6 @@ static gboolean tcp6_listener_event(GIOChannel *channel, GIOCondition condition,
                                &ifdata->tcp6_listener_watch);
 }
 
-#if defined TIZEN_EXT
-/* Temporarily disable AAAA type to enhance performance (IPv6 not supported) */
-static void __send_response_not_implemented(int sk, unsigned char *buf, int len,
-                               const struct sockaddr *to, socklen_t tolen,
-                               int protocol)
-{
-       struct domain_hdr *hdr;
-       int err, offset = protocol_offset(protocol);
-
-       DBG("sk %d", sk);
-
-       if (offset < 0)
-               return;
-
-       if (len < 12)
-               return;
-
-       hdr = (void *) (buf + offset);
-
-       DBG("id 0x%04x qr %d opcode %d", hdr->id, hdr->qr, hdr->opcode);
-
-       hdr->qr = 1;
-       hdr->rcode = 4;
-
-       hdr->ancount = 0;
-       hdr->nscount = 0;
-       hdr->arcount = 0;
-
-       err = sendto(sk, buf, len, MSG_NOSIGNAL, to, tolen);
-       if (err < 0)
-               connman_error("Failed to send DNS response to %d: %s",
-                               sk, strerror(errno));
-}
-#endif
-
 static bool udp_listener_event(GIOChannel *channel, GIOCondition condition,
                                struct listener_data *ifdata, int family,
                                guint *listener_watch)
@@ -3746,16 +3696,6 @@ static bool udp_listener_event(GIOChannel *channel, GIOCondition condition,
 
        err = parse_request(buf, len, query, sizeof(query));
        if (err < 0 || (g_slist_length(server_list) == 0)) {
-#if defined TIZEN_EXT
-               if (err == -ENOENT) {
-                       /* Temporarily disable AAAA type to enhance performance
-                        * (IPv6 not supported)
-                        */
-                       __send_response_not_implemented(sk, buf, len, client_addr,
-                                                                       *client_addr_len, IPPROTO_UDP);
-                       return TRUE;
-               }
-#endif
                send_response(sk, buf, len, client_addr,
                                *client_addr_len, IPPROTO_UDP);
                return true;