This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_errors.h"
#include "system/time.h"
+#include "smbd/service_task.h"
+#include "lib/messaging/irpc.h"
+#include "librpc/gen_ndr/ndr_irpc.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
const char *wreplsrv_owner_filter(struct wreplsrv_service *service,
TALLOC_CTX *mem_ctx,
time_t now = time(NULL);
const char *now_timestr;
const char *action;
- const char *old_state;
+ const char *old_state=NULL;
+ const char *new_state=NULL;
uint32_t modify_flags;
- BOOL modify_record;
- BOOL delete_record;
- BOOL delete_tombstones;
+ bool modify_record;
+ bool delete_record;
+ bool delete_tombstones;
struct timeval tombstone_extra_time;
now_timestr = ldb_timestring(tmp_mem, now);
NT_STATUS_HAVE_NO_MEMORY(owner_filter);
filter = talloc_asprintf(tmp_mem,
"(&%s(objectClass=winsRecord)"
- "(expireTime<=%s)(!(isStatic=1)))",
+ "(expireTime<=%s))",
owner_filter, now_timestr);
NT_STATUS_HAVE_NO_MEMORY(filter);
ret = ldb_search(service->wins_db->ldb, NULL, LDB_SCOPE_SUBTREE, filter, NULL, &res);
delete_tombstones = timeval_expired(&tombstone_extra_time);
for (i=0; i < res->count; i++) {
- status = winsdb_record(service->wins_db, res->msgs[i], tmp_mem, &rec);
+ /*
+ * we pass '0' as 'now' here,
+ * because we want to get the raw timestamps which are in the DB
+ */
+ status = winsdb_record(service->wins_db, res->msgs[i], tmp_mem, 0, &rec);
NT_STATUS_NOT_OK_RETURN(status);
-
- if (rec->is_static) {
- DEBUG(0,("%s: corrupted record: %s\n",
- __location__, nbt_name_string(rec, rec->name)));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
-
- if (rec->expire_time > now) {
- DEBUG(0,("%s: corrupted record: %s\n",
- __location__, nbt_name_string(rec, rec->name)));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
+ talloc_free(res->msgs[i]);
modify_flags = 0;
- modify_record = False;
- delete_record = False;
+ modify_record = false;
+ delete_record = false;
switch (rec->state) {
case WREPL_STATE_ACTIVE:
old_state = "active";
- rec->state = WREPL_STATE_RELEASED;
- rec->expire_time= service->config.tombstone_interval + now;
+ new_state = "active";
+ if (!rec->is_static) {
+ new_state = "released";
+ rec->state = WREPL_STATE_RELEASED;
+ rec->expire_time= service->config.tombstone_interval + now;
+ }
modify_flags = 0;
- modify_record = True;
+ modify_record = true;
break;
case WREPL_STATE_RELEASED:
old_state = "released";
+ new_state = "tombstone";
rec->state = WREPL_STATE_TOMBSTONE;
rec->expire_time= service->config.tombstone_timeout + now;
modify_flags = WINSDB_FLAG_ALLOC_VERSION | WINSDB_FLAG_TAKE_OWNERSHIP;
- modify_record = True;
+ modify_record = true;
break;
case WREPL_STATE_TOMBSTONE:
old_state = "tombstone";
+ new_state = "tombstone";
if (!delete_tombstones) break;
- delete_record = True;
+ new_state = "deleted";
+ delete_record = true;
break;
case WREPL_STATE_RESERVED:
}
if (ret != NBT_RCODE_OK) {
- DEBUG(1,("WINS scavenging: failed to %s name %s (owned:%s): error:%u\n",
- action, nbt_name_string(rec, rec->name), old_state, ret));
+ DEBUG(1,("WINS scavenging: failed to %s name %s (owned:%s -> owned:%s): error:%u\n",
+ action, nbt_name_string(rec, rec->name), old_state, new_state, ret));
} else {
- DEBUG(4,("WINS scavenging: %s name: %s (owned:%s)\n",
- action, nbt_name_string(rec, rec->name), old_state));
+ DEBUG(4,("WINS scavenging: %s name: %s (owned:%s -> owned:%s)\n",
+ action, nbt_name_string(rec, rec->name), old_state, new_state));
}
talloc_free(rec);
time_t now = time(NULL);
const char *now_timestr;
const char *action;
- const char *old_state;
+ const char *old_state=NULL;
+ const char *new_state=NULL;
uint32_t modify_flags;
- BOOL modify_record;
- BOOL delete_record;
- BOOL delete_tombstones;
+ bool modify_record;
+ bool delete_record;
+ bool delete_tombstones;
struct timeval tombstone_extra_time;
now_timestr = ldb_timestring(tmp_mem, now);
NT_STATUS_HAVE_NO_MEMORY(owner_filter);
filter = talloc_asprintf(tmp_mem,
"(&(!%s)(objectClass=winsRecord)"
- "(!(recordState=%u))(expireTime<=%s)(!(isStatic=1)))",
+ "(!(recordState=%u))(expireTime<=%s))",
owner_filter, WREPL_STATE_ACTIVE, now_timestr);
NT_STATUS_HAVE_NO_MEMORY(filter);
ret = ldb_search(service->wins_db->ldb, NULL, LDB_SCOPE_SUBTREE, filter, NULL, &res);
delete_tombstones = timeval_expired(&tombstone_extra_time);
for (i=0; i < res->count; i++) {
- status = winsdb_record(service->wins_db, res->msgs[i], tmp_mem, &rec);
+ /*
+ * we pass '0' as 'now' here,
+ * because we want to get the raw timestamps which are in the DB
+ */
+ status = winsdb_record(service->wins_db, res->msgs[i], tmp_mem, 0, &rec);
NT_STATUS_NOT_OK_RETURN(status);
-
- if (rec->is_static) {
- DEBUG(0,("%s: corrupted record: %s\n",
- __location__, nbt_name_string(rec, rec->name)));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
-
- if (rec->expire_time > now) {
- DEBUG(0,("%s: corrupted record: %s\n",
- __location__, nbt_name_string(rec, rec->name)));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
+ talloc_free(res->msgs[i]);
modify_flags = 0;
- modify_record = False;
- delete_record = False;
+ modify_record = false;
+ delete_record = false;
switch (rec->state) {
case WREPL_STATE_ACTIVE:
case WREPL_STATE_RELEASED:
old_state = "released";
+ new_state = "tombstone";
rec->state = WREPL_STATE_TOMBSTONE;
rec->expire_time= service->config.tombstone_timeout + now;
modify_flags = 0;
- modify_record = True;
+ modify_record = true;
break;
case WREPL_STATE_TOMBSTONE:
old_state = "tombstone";
+ new_state = "tombstone";
if (!delete_tombstones) break;
- delete_record = True;
+ new_state = "deleted";
+ delete_record = true;
break;
case WREPL_STATE_RESERVED:
}
if (ret != NBT_RCODE_OK) {
- DEBUG(1,("WINS scavenging: failed to %s name %s (replica:%s): error:%u\n",
- action, nbt_name_string(rec, rec->name), old_state, ret));
+ DEBUG(1,("WINS scavenging: failed to %s name %s (replica:%s -> replica:%s): error:%u\n",
+ action, nbt_name_string(rec, rec->name), old_state, new_state, ret));
} else {
- DEBUG(4,("WINS scavenging: %s name: %s (replica:%s)\n",
- action, nbt_name_string(rec, rec->name), old_state));
+ DEBUG(4,("WINS scavenging: %s name: %s (replica:%s -> replica:%s)\n",
+ action, nbt_name_string(rec, rec->name), old_state, new_state));
}
talloc_free(rec);
return NT_STATUS_OK;
}
+struct verify_state {
+ struct messaging_context *msg_ctx;
+ struct wreplsrv_service *service;
+ struct winsdb_record *rec;
+ struct nbtd_proxy_wins_challenge r;
+};
+
+static void verify_handler(struct irpc_request *ireq)
+{
+ struct verify_state *s = talloc_get_type(ireq->async.private,
+ struct verify_state);
+ struct winsdb_record *rec = s->rec;
+ const char *action;
+ const char *old_state = "active";
+ const char *new_state = "active";
+ const char *new_owner = "replica";
+ uint32_t modify_flags = 0;
+ bool modify_record = false;
+ bool delete_record = false;
+ bool different = false;
+ int ret;
+ NTSTATUS status;
+ uint32_t i, j;
+
+ /*
+ * - if the name isn't present anymore remove our record
+ * - if the name is found and not a normal group check if the addresses match,
+ * - if they don't match remove the record
+ * - if they match do nothing
+ * - if an error happens do nothing
+ */
+ status = irpc_call_recv(ireq);
+ if (NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_NOT_FOUND, status)) {
+ delete_record = true;
+ new_state = "deleted";
+ } else if (NT_STATUS_IS_OK(status) && rec->type != WREPL_TYPE_GROUP) {
+ for (i=0; i < s->r.out.num_addrs; i++) {
+ bool found = false;
+ for (j=0; rec->addresses[j]; j++) {
+ if (strcmp(s->r.out.addrs[i].addr, rec->addresses[j]->address) == 0) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ different = true;
+ break;
+ }
+ }
+ } else if (NT_STATUS_IS_OK(status) && rec->type == WREPL_TYPE_GROUP) {
+ if (s->r.out.num_addrs != 1 || strcmp(s->r.out.addrs[0].addr, "255.255.255.255") != 0) {
+ different = true;
+ }
+ }
+
+ if (different) {
+ /*
+ * if the reply from the owning wins server has different addresses
+ * then take the ownership of the record and make it a tombstone
+ * this will then hopefully replicated to the original owner of the record
+ * which will then propagate it's own record, so that the current record will
+ * be replicated to to us
+ */
+ DEBUG(0,("WINS scavenging: replica %s verify got different addresses from winsserver: %s: tombstoning record\n",
+ nbt_name_string(rec, rec->name), rec->wins_owner));
+
+ rec->state = WREPL_STATE_TOMBSTONE;
+ rec->expire_time= time(NULL) + s->service->config.tombstone_timeout;
+ for (i=0; rec->addresses[i]; i++) {
+ rec->addresses[i]->expire_time = rec->expire_time;
+ }
+ modify_record = true;
+ modify_flags = WINSDB_FLAG_ALLOC_VERSION | WINSDB_FLAG_TAKE_OWNERSHIP;
+ new_state = "tombstone";
+ new_owner = "owned";
+ } else if (NT_STATUS_IS_OK(status)) {
+ /* if the addresses are the same, just update the timestamps */
+ rec->expire_time = time(NULL) + s->service->config.verify_interval;
+ for (i=0; rec->addresses[i]; i++) {
+ rec->addresses[i]->expire_time = rec->expire_time;
+ }
+ modify_record = true;
+ modify_flags = 0;
+ new_state = "active";
+ }
+
+ if (modify_record) {
+ action = "modify";
+ ret = winsdb_modify(s->service->wins_db, rec, modify_flags);
+ } else if (delete_record) {
+ action = "delete";
+ ret = winsdb_delete(s->service->wins_db, rec);
+ } else {
+ action = "skip";
+ ret = NBT_RCODE_OK;
+ }
+
+ if (ret != NBT_RCODE_OK) {
+ DEBUG(1,("WINS scavenging: failed to %s name %s (replica:%s -> %s:%s): error:%u\n",
+ action, nbt_name_string(rec, rec->name), old_state, new_owner, new_state, ret));
+ } else {
+ DEBUG(4,("WINS scavenging: %s name: %s (replica:%s -> %s:%s): %s: %s\n",
+ action, nbt_name_string(rec, rec->name), old_state, new_owner, new_state,
+ rec->wins_owner, nt_errstr(status)));
+ }
+
+ talloc_free(s);
+}
+
static NTSTATUS wreplsrv_scavenging_replica_active_records(struct wreplsrv_service *service, TALLOC_CTX *tmp_mem)
{
NTSTATUS status;
int ret;
time_t now = time(NULL);
const char *now_timestr;
- const char *action;
- const char *old_state;
- BOOL modify_flags;
- BOOL modify_record;
- BOOL delete_record;
+ struct irpc_request *ireq;
+ struct verify_state *s;
+ struct server_id *nbt_servers;
+
+ nbt_servers = irpc_servers_byname(service->task->msg_ctx, tmp_mem, "nbt_server");
+ if ((nbt_servers == NULL) || (nbt_servers[0].id == 0)) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
now_timestr = ldb_timestring(tmp_mem, now);
NT_STATUS_HAVE_NO_MEMORY(now_timestr);
NT_STATUS_HAVE_NO_MEMORY(owner_filter);
filter = talloc_asprintf(tmp_mem,
"(&(!%s)(objectClass=winsRecord)"
- "(recordState=%u)(expireTime<=%s)(!(isStatic=1)))",
+ "(recordState=%u)(expireTime<=%s))",
owner_filter, WREPL_STATE_ACTIVE, now_timestr);
NT_STATUS_HAVE_NO_MEMORY(filter);
ret = ldb_search(service->wins_db->ldb, NULL, LDB_SCOPE_SUBTREE, filter, NULL, &res);
DEBUG(10,("WINS scavenging: filter '%s' count %d\n", filter, res->count));
for (i=0; i < res->count; i++) {
- status = winsdb_record(service->wins_db, res->msgs[i], tmp_mem, &rec);
+ /*
+ * we pass '0' as 'now' here,
+ * because we want to get the raw timestamps which are in the DB
+ */
+ status = winsdb_record(service->wins_db, res->msgs[i], tmp_mem, 0, &rec);
NT_STATUS_NOT_OK_RETURN(status);
-
- if (rec->is_static) {
- DEBUG(0,("%s: corrupted record: %s\n",
- __location__, nbt_name_string(rec, rec->name)));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
-
- if (rec->expire_time > now) {
- DEBUG(0,("%s: corrupted record: %s\n",
- __location__, nbt_name_string(rec, rec->name)));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
+ talloc_free(res->msgs[i]);
if (rec->state != WREPL_STATE_ACTIVE) {
DEBUG(0,("%s: corrupted record: %s\n",
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
- old_state = "active";
-
- modify_flags = 0;
- modify_record = False;
- delete_record = False;
-
/*
- * TODO: ask the owning wins server if the record still exists,
- * if not delete the record
+ * ask the owning wins server if the record still exists,
+ * if not delete the record
+ *
+ * TODO: NOTE: this is a simpliefied version, to verify that
+ * a record still exist, I assume that w2k3 uses
+ * DCERPC calls or some WINSREPL packets for this,
+ * but we use a wins name query
*/
- DEBUG(0,("TODO: ask wins server '%s' if '%s' with version_id:%llu still exists\n",
- rec->wins_owner, nbt_name_string(rec, rec->name), rec->version));
-
- if (modify_record) {
- action = "modify";
- ret = winsdb_modify(service->wins_db, rec, modify_flags);
- } else if (delete_record) {
- action = "delete";
- ret = winsdb_delete(service->wins_db, rec);
- } else {
- action = "skip";
- ret = NBT_RCODE_OK;
- }
-
- if (ret != NBT_RCODE_OK) {
- DEBUG(1,("WINS scavenging: failed to %s name %s (replica:%s): error:%u\n",
- action, nbt_name_string(rec, rec->name), old_state, ret));
- } else {
- DEBUG(4,("WINS scavenging: %s name: %s (replica:%s)\n",
- action, nbt_name_string(rec, rec->name), old_state));
- }
-
- talloc_free(rec);
+ DEBUG(0,("ask wins server '%s' if '%s' with version_id:%llu still exists\n",
+ rec->wins_owner, nbt_name_string(rec, rec->name),
+ (unsigned long long)rec->version));
+
+ s = talloc_zero(tmp_mem, struct verify_state);
+ NT_STATUS_HAVE_NO_MEMORY(s);
+ s->msg_ctx = service->task->msg_ctx;
+ s->service = service;
+ s->rec = talloc_steal(s, rec);
+
+ s->r.in.name = *rec->name;
+ s->r.in.num_addrs = 1;
+ s->r.in.addrs = talloc_array(s, struct nbtd_proxy_wins_addr, s->r.in.num_addrs);
+ NT_STATUS_HAVE_NO_MEMORY(s->r.in.addrs);
+ /* TODO: fix pidl to handle inline ipv4address arrays */
+ s->r.in.addrs[0].addr = rec->wins_owner;
+
+ ireq = IRPC_CALL_SEND(s->msg_ctx, nbt_servers[0],
+ irpc, NBTD_PROXY_WINS_CHALLENGE,
+ &s->r, s);
+ NT_STATUS_HAVE_NO_MEMORY(ireq);
+
+ ireq->async.fn = verify_handler;
+ ireq->async.private = s;
+
+ talloc_steal(service, s);
}
return NT_STATUS_OK;
{
NTSTATUS status;
TALLOC_CTX *tmp_mem;
+ bool skip_first_run = false;
if (!timeval_expired(&service->scavenging.next_run)) {
return NT_STATUS_OK;
}
+ if (timeval_is_zero(&service->scavenging.next_run)) {
+ skip_first_run = true;
+ }
+
service->scavenging.next_run = timeval_current_ofs(service->config.scavenging_interval, 0);
status = wreplsrv_periodic_schedule(service, service->config.scavenging_interval);
NT_STATUS_NOT_OK_RETURN(status);
+ /*
+ * if it's the first time this functions is called (startup)
+ * the next_run is zero, in this case we should not do scavenging
+ */
+ if (skip_first_run) {
+ return NT_STATUS_OK;
+ }
+
if (service->scavenging.processing) {
return NT_STATUS_OK;
}
DEBUG(4,("wreplsrv_scavenging_run(): start\n"));
tmp_mem = talloc_new(service);
- service->scavenging.processing = True;
+ NT_STATUS_HAVE_NO_MEMORY(tmp_mem);
+ service->scavenging.processing = true;
status = wreplsrv_scavenging_owned_records(service,tmp_mem);
- service->scavenging.processing = False;
+ service->scavenging.processing = false;
talloc_free(tmp_mem);
NT_STATUS_NOT_OK_RETURN(status);
tmp_mem = talloc_new(service);
- service->scavenging.processing = True;
+ NT_STATUS_HAVE_NO_MEMORY(tmp_mem);
+ service->scavenging.processing = true;
status = wreplsrv_scavenging_replica_non_active_records(service, tmp_mem);
- service->scavenging.processing = False;
+ service->scavenging.processing = false;
talloc_free(tmp_mem);
NT_STATUS_NOT_OK_RETURN(status);
tmp_mem = talloc_new(service);
- service->scavenging.processing = True;
+ NT_STATUS_HAVE_NO_MEMORY(tmp_mem);
+ service->scavenging.processing = true;
status = wreplsrv_scavenging_replica_active_records(service, tmp_mem);
- service->scavenging.processing = False;
+ service->scavenging.processing = false;
talloc_free(tmp_mem);
NT_STATUS_NOT_OK_RETURN(status);
git.samba.org / kai / samba.git / blobdiff