void
ns_lwdclient_processnoop(ns_lwdclient_t *client, lwres_buffer_t *b) {
lwres_nooprequest_t *req;
lwres_noopresponse_t resp;
isc_result_t result;
lwres_result_t lwres;
isc_region_t r;
lwres_buffer_t lwb;
REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
INSIST(client->byaddr == NULL);
req = NULL;
result = lwres_nooprequest_parse(client->clientmgr->lwctx,
b, &client->pkt, &req);
if (result != LWRES_R_SUCCESS)
goto send_error;
client->pkt.recvlength = LWRES_RECVLENGTH;
client->pkt.authtype = 0; /* XXXMLG */
client->pkt.authlength = 0;
client->pkt.result = LWRES_R_SUCCESS;
resp.datalength = req->datalength;
resp.data = req->data;
lwres = lwres_noopresponse_render(client->clientmgr->lwctx, &resp,
&client->pkt, &lwb);
if (lwres != LWRES_R_SUCCESS)
goto cleanup_req;
r.base = lwb.base;
r.length = lwb.used;
client->sendbuf = r.base;
client->sendlength = r.length;
result = ns_lwdclient_sendreply(client, &r);
if (result != ISC_R_SUCCESS)
goto cleanup_lwb;
/*
* We can now destroy request.
*/
lwres_nooprequest_free(client->clientmgr->lwctx, &req);
NS_LWDCLIENT_SETSEND(client);
return;
cleanup_lwb:
lwres_context_freemem(client->clientmgr->lwctx, lwb.base, lwb.length);
cleanup_req:
lwres_nooprequest_free(client->clientmgr->lwctx, &req);
send_error:
ns_lwdclient_errorpktsend(client, LWRES_R_FAILURE);
}
void
ns_lwdclient_processgnba(ns_lwdclient_t *client, lwres_buffer_t *b) {
lwres_gnbarequest_t *req;
isc_result_t result;
isc_sockaddr_t sa;
ns_lwdclientmgr_t *cm;
REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
INSIST(client->byaddr == NULL);
cm = client->clientmgr;
req = NULL;
result = lwres_gnbarequest_parse(cm->lwctx,
b, &client->pkt, &req);
if (result != LWRES_R_SUCCESS)
goto out;
client->options = 0;
if (req->addr.family == LWRES_ADDRTYPE_V4) {
client->na.family = AF_INET;
if (req->addr.length != 4)
goto out;
memcpy(&client->na.type.in, req->addr.address, 4);
} else if (req->addr.family == LWRES_ADDRTYPE_V6) {
client->na.family = AF_INET6;
if (req->addr.length != 16)
goto out;
memcpy(&client->na.type.in6, req->addr.address, 16);
} else {
goto out;
}
isc_sockaddr_fromnetaddr(&sa, &client->na, 53);
ns_lwdclient_log(50, "client %p looking for addrtype %08x",
client, req->addr.family);
/*
* We no longer need to keep this around.
*/
lwres_gnbarequest_free(cm->lwctx, &req);
/*
* Initialize the real name and alias arrays in the reply we're
* going to build up.
*/
init_gnba(client);
client->options = 0;
/*
* Start the find.
*/
start_byaddr(client);
return;
/*
* We're screwed. Return an error packet to our caller.
*/
out:
if (req != NULL)
lwres_gnbarequest_free(cm->lwctx, &req);
ns_lwdclient_errorpktsend(client, LWRES_R_FAILURE);
}
void
ns_lwdclient_processgrbn(ns_lwdclient_t *client, lwres_buffer_t *b) {
lwres_grbnrequest_t *req;
isc_result_t result;
ns_lwdclientmgr_t *cm;
isc_buffer_t namebuf;
REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
INSIST(client->byaddr == NULL);
cm = client->clientmgr;
req = NULL;
result = lwres_grbnrequest_parse(cm->lwctx,
b, &client->pkt, &req);
if (result != LWRES_R_SUCCESS)
goto out;
if (req->name == NULL)
goto out;
client->options = 0;
if (req->rdclass != cm->view->rdclass)
goto out;
if (req->rdclass == dns_rdataclass_any ||
req->rdtype == dns_rdatatype_any)
goto out;
client->rdtype = req->rdtype;
isc_buffer_init(&namebuf, req->name, req->namelen);
isc_buffer_add(&namebuf, req->namelen);
dns_fixedname_init(&client->query_name);
result = dns_name_fromtext(dns_fixedname_name(&client->query_name),
&namebuf, NULL, 0, NULL);
if (result != ISC_R_SUCCESS)
goto out;
ns_lwsearchctx_init(&client->searchctx,
cm->listener->manager->search,
dns_fixedname_name(&client->query_name),
cm->listener->manager->ndots);
ns_lwsearchctx_first(&client->searchctx);
ns_lwdclient_log(50, "client %p looking for type %d",
client, client->rdtype);
/*
* We no longer need to keep this around.
*/
lwres_grbnrequest_free(cm->lwctx, &req);
/*
* Initialize the real name and alias arrays in the reply we're
* going to build up.
*/
init_grbn(client);
/*
* Start the find.
*/
start_lookup(client);
return;
/*
* We're screwed. Return an error packet to our caller.
*/
out:
if (req != NULL)
lwres_grbnrequest_free(cm->lwctx, &req);
ns_lwdclient_errorpktsend(client, LWRES_R_FAILURE);
}
/*
* When we are called, we can be assured that:
*
* client->sockaddr contains the address we need to reply to,
*
* client->pkt contains the packet header data,
*
* the packet "checks out" overall -- any MD5 hashes or crypto
* bits have been verified,
*
* "b" points to the remaining data after the packet header
* was parsed off.
*
* We are in a the RECVDONE state.
*
* From this state we will enter the SEND state if we happen to have
* everything we need or we need to return an error packet, or to the
* FINDWAIT state if we need to look things up.
*/
void
ns_lwdclient_processgabn(ns_lwdclient_t *client, lwres_buffer_t *b) {
isc_result_t result;
lwres_gabnrequest_t *req;
ns_lwdclientmgr_t *cm;
isc_buffer_t namebuf;
REQUIRE(NS_LWDCLIENT_ISRECVDONE(client));
cm = client->clientmgr;
req = NULL;
result = lwres_gabnrequest_parse(client->clientmgr->lwctx,
b, &client->pkt, &req);
if (result != LWRES_R_SUCCESS)
goto out;
if (req->name == NULL)
goto out;
isc_buffer_init(&namebuf, req->name, req->namelen);
isc_buffer_add(&namebuf, req->namelen);
dns_fixedname_init(&client->target_name);
dns_fixedname_init(&client->query_name);
result = dns_name_fromtext(dns_fixedname_name(&client->query_name),
&namebuf, NULL, 0, NULL);
if (result != ISC_R_SUCCESS)
goto out;
ns_lwsearchctx_init(&client->searchctx,
cm->listener->manager->search,
dns_fixedname_name(&client->query_name),
cm->listener->manager->ndots);
ns_lwsearchctx_first(&client->searchctx);
client->find_wanted = req->addrtypes;
ns_lwdclient_log(50, "client %p looking for addrtypes %08x",
client, client->find_wanted);
/*
* We no longer need to keep this around.
*/
lwres_gabnrequest_free(client->clientmgr->lwctx, &req);
/*
* Start the find.
*/
result = start_find(client);
if (result != ISC_R_SUCCESS)
goto out;
return;
/*
* We're screwed. Return an error packet to our caller.
*/
out:
if (req != NULL)
lwres_gabnrequest_free(client->clientmgr->lwctx, &req);
ns_lwdclient_errorpktsend(client, LWRES_R_FAILURE);
}
