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path: root/source4/nbt_server/wins/winsserver.c
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Diffstat (limited to 'source4/nbt_server/wins/winsserver.c')
-rw-r--r--source4/nbt_server/wins/winsserver.c171
1 files changed, 125 insertions, 46 deletions
diff --git a/source4/nbt_server/wins/winsserver.c b/source4/nbt_server/wins/winsserver.c
index 12201b1620..d187ab65ab 100644
--- a/source4/nbt_server/wins/winsserver.c
+++ b/source4/nbt_server/wins/winsserver.c
@@ -56,7 +56,8 @@ static enum wrepl_name_type wrepl_type(uint16_t nb_flags, struct nbt_name *name,
*/
static uint8_t wins_register_new(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
- const struct nbt_peer_socket *src)
+ const struct nbt_peer_socket *src,
+ enum wrepl_name_type type)
{
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
struct nbtd_interface);
@@ -66,14 +67,11 @@ static uint8_t wins_register_new(struct nbt_name_socket *nbtsock,
uint16_t nb_flags = packet->additional[0].rdata.netbios.addresses[0].nb_flags;
const char *address = packet->additional[0].rdata.netbios.addresses[0].ipaddr;
struct winsdb_record rec;
- enum wrepl_name_type type;
enum wrepl_name_node node;
- BOOL mhomed = ((packet->operation & NBT_OPCODE) == NBT_OPCODE_MULTI_HOME_REG);
#define WREPL_NODE_NBT_FLAGS(nb_flags) \
((nb_flags & NBT_NM_OWNER_TYPE)>>13)
- type = wrepl_type(nb_flags, name, mhomed);
node = WREPL_NODE_NBT_FLAGS(nb_flags);
rec.name = name;
@@ -107,6 +105,7 @@ static uint8_t wins_register_new(struct nbt_name_socket *nbtsock,
static uint8_t wins_update_ttl(struct nbt_name_socket *nbtsock,
struct nbt_name_packet *packet,
struct winsdb_record *rec,
+ struct winsdb_addr *winsdb_addr,
const struct nbt_peer_socket *src)
{
struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
@@ -114,17 +113,53 @@ static uint8_t wins_update_ttl(struct nbt_name_socket *nbtsock,
struct wins_server *winssrv = iface->nbtsrv->winssrv;
uint32_t ttl = wins_server_ttl(winssrv, packet->additional[0].ttl);
const char *address = packet->additional[0].rdata.netbios.addresses[0].ipaddr;
- time_t now = time(NULL);
+ uint32_t modify_flags = 0;
- if (now + ttl > rec->expire_time) {
- rec->expire_time = now + ttl;
- }
+ rec->expire_time = time(NULL) + ttl;
rec->registered_by = src->addr;
+ if (winsdb_addr) {
+ winsdb_addr->wins_owner = WINSDB_OWNER_LOCAL;
+ winsdb_addr->expire_time = rec->expire_time;
+ }
+
+ if (strcmp(WINSDB_OWNER_LOCAL, rec->wins_owner) != 0) {
+ modify_flags = WINSDB_FLAG_ALLOC_VERSION | WINSDB_FLAG_TAKE_OWNERSHIP;
+ }
+
DEBUG(5,("WINS: refreshed registration of %s at %s\n",
nbt_name_string(packet, rec->name), address));
- return winsdb_modify(winssrv->wins_db, rec, 0);
+ return winsdb_modify(winssrv->wins_db, rec, modify_flags);
+}
+
+/*
+ do a sgroup merge
+*/
+static uint8_t wins_sgroup_merge(struct nbt_name_socket *nbtsock,
+ struct nbt_name_packet *packet,
+ struct winsdb_record *rec,
+ const char *address,
+ const struct nbt_peer_socket *src)
+{
+ struct nbtd_interface *iface = talloc_get_type(nbtsock->incoming.private,
+ struct nbtd_interface);
+ struct wins_server *winssrv = iface->nbtsrv->winssrv;
+ uint32_t ttl = wins_server_ttl(winssrv, packet->additional[0].ttl);
+
+ rec->expire_time = time(NULL) + ttl;
+ rec->registered_by = src->addr;
+
+ rec->addresses = winsdb_addr_list_add(rec->addresses,
+ address,
+ WINSDB_OWNER_LOCAL,
+ rec->expire_time);
+ if (rec->addresses == NULL) return NBT_RCODE_SVR;
+
+ DEBUG(5,("WINS: sgroup merge of %s at %s\n",
+ nbt_name_string(packet, rec->name), address));
+
+ return winsdb_modify(winssrv->wins_db, rec, WINSDB_FLAG_ALLOC_VERSION | WINSDB_FLAG_TAKE_OWNERSHIP);
}
/*
@@ -143,10 +178,14 @@ static void nbtd_winsserver_register(struct nbt_name_socket *nbtsock,
uint8_t rcode = NBT_RCODE_OK;
uint16_t nb_flags = packet->additional[0].rdata.netbios.addresses[0].nb_flags;
const char *address = packet->additional[0].rdata.netbios.addresses[0].ipaddr;
+ BOOL mhomed = ((packet->operation & NBT_OPCODE) == NBT_OPCODE_MULTI_HOME_REG);
+ enum wrepl_name_type new_type = wrepl_type(nb_flags, name, mhomed);
+ struct winsdb_addr *winsdb_addr = NULL;
/* as a special case, the local master browser name is always accepted
for registration, but never stored */
if (name->type == NBT_NAME_MASTER) {
+ rcode = NBT_RCODE_OK;
goto done;
}
@@ -158,67 +197,107 @@ static void nbtd_winsserver_register(struct nbt_name_socket *nbtsock,
status = winsdb_lookup(winssrv->wins_db, name, packet, &rec);
if (NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_NOT_FOUND, status)) {
- rcode = wins_register_new(nbtsock, packet, src);
+ rcode = wins_register_new(nbtsock, packet, src, new_type);
goto done;
} else if (!NT_STATUS_IS_OK(status)) {
rcode = NBT_RCODE_SVR;
goto done;
- } else if (rec->state != WREPL_STATE_ACTIVE) {
-/* TODO: this is not always correct!!!*/
+ }
+
+ if (rec->type == WREPL_TYPE_GROUP) {
+ if (new_type != WREPL_TYPE_GROUP) {
+ DEBUG(2,("WINS: Attempt to register name %s as non normal group(%u)"
+ " while a normal group is already there\n",
+ nbt_name_string(packet, name), new_type));
+ rcode = NBT_RCODE_ACT;
+ goto done;
+ }
+
+ if (rec->state == WREPL_STATE_ACTIVE) {
+ /* TODO: is this correct? */
+ rcode = wins_update_ttl(nbtsock, packet, rec, NULL, src);
+ goto done;
+ }
+
+ /* TODO: is this correct? */
winsdb_delete(winssrv->wins_db, rec);
- rcode = wins_register_new(nbtsock, packet, src);
+ rcode = wins_register_new(nbtsock, packet, src, new_type);
goto done;
}
- /* its an active name - first see if the registration is of the right type */
- if ((rec->type == WREPL_TYPE_GROUP) && !(nb_flags & NBT_NM_GROUP)) {
- DEBUG(2,("WINS: Attempt to register unique name %s when group name is active\n",
- nbt_name_string(packet, name)));
- rcode = NBT_RCODE_ACT;
+ if (rec->state != WREPL_STATE_ACTIVE) {
+ winsdb_delete(winssrv->wins_db, rec);
+ rcode = wins_register_new(nbtsock, packet, src, new_type);
goto done;
}
- /* if its an active unique name, and the registration is for a group, then
- see if the unique name owner still wants the name */
- if (!(rec->type == WREPL_TYPE_GROUP) && (nb_flags & NBT_NM_GROUP)) {
+ switch (rec->type) {
+ case WREPL_TYPE_UNIQUE:
+ case WREPL_TYPE_MHOMED:
+ /*
+ * if its an active unique name, and the registration is for a group, then
+ * see if the unique name owner still wants the name
+ * TODO: is this correct?
+ */
+ if (new_type == WREPL_TYPE_GROUP || new_type == WREPL_TYPE_GROUP) {
+ wins_register_wack(nbtsock, packet, rec, src);
+ return;
+ }
+
+ /*
+ * if the registration is for an address that is currently active, then
+ * just update the expiry time of the record and the address
+ * TODO: is this correct?
+ */
+ winsdb_addr = winsdb_addr_list_check(rec->addresses, address);
+ if (winsdb_addr) {
+ rcode = wins_update_ttl(nbtsock, packet, rec, winsdb_addr, src);
+ goto done;
+ }
+
+ /*
+ * we have to do a WACK to see if the current owner is willing
+ * to give up its claim
+ */
wins_register_wack(nbtsock, packet, rec, src);
return;
- }
- /* if the registration is for a group, then just update the expiry time
- and we are done */
- if (nb_flags & NBT_NM_GROUP) {
- wins_update_ttl(nbtsock, packet, rec, src);
+ case WREPL_TYPE_GROUP:
+ /* this should not be reached as normal groups are handled above */
+ DEBUG(0,("BUG at %s\n",__location__));
+ rcode = NBT_RCODE_ACT;
goto done;
- }
- /*
- * TODO: this complete functions needs a lot of work,
- * to handle special group and multiomed registrations
- */
- if (name->type == NBT_NAME_LOGON) {
- wins_update_ttl(nbtsock, packet, rec, src);
- goto done;
- }
+ case WREPL_TYPE_SGROUP:
+ /* if the new record isn't also a special group, refuse the registration */
+ if (new_type != WREPL_TYPE_SGROUP) {
+ DEBUG(2,("WINS: Attempt to register name %s as non special group(%u)"
+ " while a special group is already there\n",
+ nbt_name_string(packet, name), new_type));
+ rcode = NBT_RCODE_ACT;
+ goto done;
+ }
+
+ /*
+ * if the registration is for an address that is currently active, then
+ * just update the expiry time
+ * just update the expiry time of the record and the address
+ * TODO: is this correct?
+ */
+ winsdb_addr = winsdb_addr_list_check(rec->addresses, address);
+ if (winsdb_addr) {
+ rcode = wins_update_ttl(nbtsock, packet, rec, winsdb_addr, src);
+ goto done;
+ }
- /* if the registration is for an address that is currently active, then
- just update the expiry time */
- if (winsdb_addr_list_check(rec->addresses, address)) {
- wins_update_ttl(nbtsock, packet, rec, src);
+ rcode = wins_sgroup_merge(nbtsock, packet, rec, address, src);
goto done;
}
- /* we have to do a WACK to see if the current owner is willing
- to give up its claim */
- wins_register_wack(nbtsock, packet, rec, src);
- return;
-
done:
nbtd_name_registration_reply(nbtsock, packet, src, rcode);
}
-
-
/*
query a name
*/