+
+flxRecord* flx_dns_packet_consume_record(flxDnsPacket *p, gboolean *ret_cache_flush) {
+ gchar name[257], buf[257];
+ guint16 type, class;
+ guint32 ttl;
+ guint16 rdlength;
+ gconstpointer data;
+ flxRecord *r = NULL;
+ gconstpointer start;
+
+ g_assert(p);
+ g_assert(ret_cache_flush);
+
+/* g_message("consume_record()"); */
+
+ if (flx_dns_packet_consume_name(p, name, sizeof(name)) < 0 ||
+ flx_dns_packet_consume_uint16(p, &type) < 0 ||
+ flx_dns_packet_consume_uint16(p, &class) < 0 ||
+ flx_dns_packet_consume_uint32(p, &ttl) < 0 ||
+ flx_dns_packet_consume_uint16(p, &rdlength) < 0 ||
+ p->rindex + rdlength > p->size)
+
+ goto fail;
+
+/* g_message("name = %s, rdlength = %u", name, rdlength); */
+
+ start = flx_dns_packet_get_rptr(p);
+
+ r = flx_record_new_full(name, class, type);
+
+ switch (type) {
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME:
+
+/* g_message("ptr"); */
+
+ if (flx_dns_packet_consume_name(p, buf, sizeof(buf)) < 0)
+ goto fail;
+
+ r->data.ptr.name = g_strdup(buf);
+ break;
+
+
+ case FLX_DNS_TYPE_SRV:
+
+/* g_message("srv"); */
+
+ if (flx_dns_packet_consume_uint16(p, &r->data.srv.priority) < 0 ||
+ flx_dns_packet_consume_uint16(p, &r->data.srv.weight) < 0 ||
+ flx_dns_packet_consume_uint16(p, &r->data.srv.port) < 0 ||
+ flx_dns_packet_consume_name(p, buf, sizeof(buf)) < 0)
+ goto fail;
+
+ r->data.srv.name = g_strdup(buf);
+ break;
+
+ case FLX_DNS_TYPE_HINFO:
+
+/* g_message("hinfo"); */
+
+ if (flx_dns_packet_consume_string(p, buf, sizeof(buf)) < 0)
+ goto fail;
+
+ r->data.hinfo.cpu = g_strdup(buf);
+
+ if (flx_dns_packet_consume_string(p, buf, sizeof(buf)) < 0)
+ goto fail;
+
+ r->data.hinfo.os = g_strdup(buf);
+ break;
+
+ case FLX_DNS_TYPE_TXT:
+
+/* g_message("txt"); */
+
+ if (rdlength > 0) {
+ r->data.txt.string_list = flx_string_list_parse(flx_dns_packet_get_rptr(p), rdlength);
+
+ if (flx_dns_packet_skip(p, rdlength) < 0)
+ goto fail;
+ } else
+ r->data.txt.string_list = NULL;
+
+ break;
+
+ case FLX_DNS_TYPE_A:
+
+/* g_message("A"); */
+
+ if (flx_dns_packet_consume_bytes(p, &r->data.a.address, sizeof(flxIPv4Address)) < 0)
+ goto fail;
+
+ break;
+
+ case FLX_DNS_TYPE_AAAA:
+
+/* g_message("aaaa"); */
+
+ if (flx_dns_packet_consume_bytes(p, &r->data.aaaa.address, sizeof(flxIPv6Address)) < 0)
+ goto fail;
+
+ break;
+
+ default:
+
+/* g_message("generic"); */
+
+ if (rdlength > 0) {
+
+ r->data.generic.data = g_memdup(flx_dns_packet_get_rptr(p), rdlength);
+
+ if (flx_dns_packet_skip(p, rdlength) < 0)
+ goto fail;
+ }
+
+ break;
+ }
+
+/* g_message("%i == %u ?", (guint8*) flx_dns_packet_get_rptr(p) - (guint8*) start, rdlength); */
+
+ /* Check if we read enough data */
+ if ((guint8*) flx_dns_packet_get_rptr(p) - (guint8*) start != rdlength)
+ goto fail;
+
+ *ret_cache_flush = !!(class & FLX_DNS_CACHE_FLUSH);
+ class &= ~ FLX_DNS_CACHE_FLUSH;
+
+ r->ttl = ttl;
+
+ return r;
+
+fail:
+ if (r)
+ flx_record_unref(r);
+
+ return NULL;
+}
+
+flxKey* flx_dns_packet_consume_key(flxDnsPacket *p) {
+ gchar name[256];
+ guint16 type, class;
+
+ g_assert(p);
+
+ if (flx_dns_packet_consume_name(p, name, sizeof(name)) < 0 ||
+ flx_dns_packet_consume_uint16(p, &type) < 0 ||
+ flx_dns_packet_consume_uint16(p, &class) < 0)
+ return NULL;
+
+ class &= ~ FLX_DNS_CACHE_FLUSH;
+
+ return flx_key_new(name, class, type);
+}
+
+guint8* flx_dns_packet_append_key(flxDnsPacket *p, flxKey *k) {
+ guint8 *t;
+ guint size;
+
+ g_assert(p);
+ g_assert(k);
+
+ size = p->size;
+
+ if (!(t = flx_dns_packet_append_name(p, k->name)) ||
+ !flx_dns_packet_append_uint16(p, k->type) ||
+ !flx_dns_packet_append_uint16(p, k->class)) {
+ p->size = size;
+ return NULL;
+ }
+
+ return t;
+}
+
+guint8* flx_dns_packet_append_record(flxDnsPacket *p, flxRecord *r, gboolean cache_flush) {
+ guint8 *t, *l, *start;
+ guint size;
+
+ g_assert(p);
+ g_assert(r);
+
+ size = p->size;
+
+ if (!(t = flx_dns_packet_append_name(p, r->key->name)) ||
+ !flx_dns_packet_append_uint16(p, r->key->type) ||
+ !flx_dns_packet_append_uint16(p, cache_flush ? (r->key->class | FLX_DNS_CACHE_FLUSH) : (r->key->class &~ FLX_DNS_CACHE_FLUSH)) ||
+ !flx_dns_packet_append_uint32(p, r->ttl) ||
+ !(l = flx_dns_packet_append_uint16(p, 0)))
+ goto fail;
+
+ start = flx_dns_packet_extend(p, 0);
+
+ switch (r->key->type) {
+
+ case FLX_DNS_TYPE_PTR:
+ case FLX_DNS_TYPE_CNAME :
+
+ if (!(flx_dns_packet_append_name(p, r->data.ptr.name)))
+ goto fail;
+
+ break;
+
+ case FLX_DNS_TYPE_SRV:
+
+ if (!flx_dns_packet_append_uint16(p, r->data.srv.priority) ||
+ !flx_dns_packet_append_uint16(p, r->data.srv.weight) ||
+ !flx_dns_packet_append_uint16(p, r->data.srv.port) ||
+ !flx_dns_packet_append_name(p, r->data.srv.name))
+ goto fail;
+
+ break;
+
+ case FLX_DNS_TYPE_HINFO:
+ if (!flx_dns_packet_append_string(p, r->data.hinfo.cpu) ||
+ !flx_dns_packet_append_string(p, r->data.hinfo.os))
+ goto fail;
+
+ break;
+
+ case FLX_DNS_TYPE_TXT: {
+
+ guint8 *data;
+ guint size;
+
+ size = flx_string_list_serialize(r->data.txt.string_list, NULL, 0);
+
+/* g_message("appending string: %u %p", size, r->data.txt.string_list); */
+
+ if (!(data = flx_dns_packet_extend(p, size)))
+ goto fail;
+
+ flx_string_list_serialize(r->data.txt.string_list, data, size);
+ break;
+ }
+
+
+ case FLX_DNS_TYPE_A:
+
+ if (!flx_dns_packet_append_bytes(p, &r->data.a.address, sizeof(r->data.a.address)))
+ goto fail;
+
+ break;
+
+ case FLX_DNS_TYPE_AAAA:
+
+ if (!flx_dns_packet_append_bytes(p, &r->data.aaaa.address, sizeof(r->data.aaaa.address)))
+ goto fail;
+
+ break;
+
+ default:
+
+ if (r->data.generic.size &&
+ flx_dns_packet_append_bytes(p, r->data.generic.data, r->data.generic.size))
+ goto fail;
+
+ break;
+ }
+
+
+
+
+ size = flx_dns_packet_extend(p, 0) - start;
+ g_assert(size <= 0xFFFF);
+
+/* g_message("appended %u", size); */
+
+ * (guint16*) l = g_htons((guint16) size);
+
+ return t;
+
+
+fail:
+ p->size = size;
+ return NULL;
+}
+
+gboolean flx_dns_packet_is_empty(flxDnsPacket *p) {
+ g_assert(p);
+
+ return p->size <= FLX_DNS_PACKET_HEADER_SIZE;
+}
+
+guint flx_dns_packet_space(flxDnsPacket *p) {
+ g_assert(p);
+
+ g_assert(p->size <= p->max_size);
+
+ return p->max_size - p->size;
+}