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Diffstat (limited to 'source4/nbt_server/query.c')
-rw-r--r--source4/nbt_server/query.c85
1 files changed, 21 insertions, 64 deletions
diff --git a/source4/nbt_server/query.c b/source4/nbt_server/query.c
index 2bcc2b1892..cc14a762da 100644
--- a/source4/nbt_server/query.c
+++ b/source4/nbt_server/query.c
@@ -25,65 +25,6 @@
#include "system/network.h"
#include "nbt_server/nbt_server.h"
-/*
- send a name query reply
-*/
-static void nbtd_name_query_reply(struct nbt_name_socket *nbtsock,
- struct nbt_name_packet *request_packet,
- const char *src_address, int src_port,
- struct nbt_name *name, uint32_t ttl,
- uint16_t nb_flags, const char **addresses)
-{
- struct nbt_name_packet *packet;
- size_t num_addresses = str_list_length(addresses);
- int i;
-
- if (num_addresses == 0) {
- DEBUG(3,("No addresses in name query reply - failing\n"));
- return;
- }
-
- packet = talloc_zero(nbtsock, struct nbt_name_packet);
- if (packet == NULL) return;
-
- packet->name_trn_id = request_packet->name_trn_id;
- packet->ancount = 1;
- packet->operation =
- NBT_FLAG_REPLY |
- NBT_OPCODE_QUERY |
- NBT_FLAG_AUTHORITIVE |
- NBT_FLAG_RECURSION_DESIRED |
- NBT_FLAG_RECURSION_AVAIL;
-
- packet->answers = talloc_array(packet, struct nbt_res_rec, 1);
- if (packet->answers == NULL) goto failed;
-
- packet->answers[0].name = *name;
- packet->answers[0].rr_type = NBT_QTYPE_NETBIOS;
- packet->answers[0].rr_class = NBT_QCLASS_IP;
- packet->answers[0].ttl = ttl;
- packet->answers[0].rdata.netbios.length = num_addresses*6;
- packet->answers[0].rdata.netbios.addresses =
- talloc_array(packet->answers, struct nbt_rdata_address, num_addresses);
- if (packet->answers[0].rdata.netbios.addresses == NULL) goto failed;
-
- for (i=0;i<num_addresses;i++) {
- struct nbt_rdata_address *addr =
- &packet->answers[0].rdata.netbios.addresses[i];
- addr->nb_flags = nb_flags;
- addr->ipaddr = talloc_strdup(packet->answers, addresses[i]);
- if (addr->ipaddr == NULL) goto failed;
- }
-
- DEBUG(7,("Sending name query reply for %s<%02x> at %s to %s:%d\n",
- name->name, name->type, addresses[0], src_address, src_port));
-
- nbt_name_reply_send(nbtsock, src_address, src_port, packet);
-
-failed:
- talloc_free(packet);
-}
-
/*
answer a name query
@@ -104,17 +45,33 @@ void nbtd_request_query(struct nbt_name_socket *nbtsock,
return;
}
- NBT_ASSERT_PACKET(packet, src_address, packet->qdcount == 1);
- NBT_ASSERT_PACKET(packet, src_address, packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
- NBT_ASSERT_PACKET(packet, src_address, packet->questions[0].question_class == NBT_QCLASS_IP);
+ NBTD_ASSERT_PACKET(packet, src_address, packet->qdcount == 1);
+ NBTD_ASSERT_PACKET(packet, src_address,
+ packet->questions[0].question_type == NBT_QTYPE_NETBIOS);
+ NBTD_ASSERT_PACKET(packet, src_address,
+ packet->questions[0].question_class == NBT_QCLASS_IP);
/* see if we have the requested name on this interface */
name = &packet->questions[0].name;
iname = nbtd_find_iname(iface, name, 0);
+
if (iname == NULL) {
- DEBUG(7,("Query for %s<%02x> from %s - not found on %s\n",
- name->name, name->type, src_address, iface->ip_address));
+ /* don't send negative replies to broadcast queries */
+ if (packet->operation & NBT_FLAG_BROADCAST) {
+ return;
+ }
+
+ /* if the name does not exist, then redirect to WINS
+ server if recursion has been asked for */
+ if (packet->operation & NBT_FLAG_RECURSION_DESIRED) {
+ nbtd_winsserver_request(nbtsock, packet, src_address, src_port);
+ return;
+ }
+
+ /* otherwise send a negative reply */
+ nbtd_negative_name_query_reply(nbtsock, packet,
+ src_address, src_port);
return;
}