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|
/*
Unix SMB/CIFS implementation.
WINS Replication server
Copyright (C) Stefan Metzmacher 2005
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
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.
*/
#include "includes.h"
#include "smbd/service_task.h"
#include "lib/messaging/irpc.h"
#include "librpc/gen_ndr/ndr_irpc.h"
#include "librpc/gen_ndr/ndr_winsrepl.h"
#include "wrepl_server/wrepl_server.h"
#include "nbt_server/wins/winsdb.h"
#include "libcli/wrepl/winsrepl.h"
#include "system/time.h"
enum _R_ACTION {
R_INVALID,
R_DO_REPLACE,
R_NOT_REPLACE,
R_DO_PROPAGATE,
R_DO_CHALLENGE,
R_DO_RELEASE_DEMAND,
R_DO_SGROUP_MERGE
};
static const char *_R_ACTION_enum_string(enum _R_ACTION action)
{
switch (action) {
case R_INVALID: return "INVALID";
case R_DO_REPLACE: return "REPLACE";
case R_NOT_REPLACE: return "NOT_REPLACE";
case R_DO_PROPAGATE: return "PROPAGATE";
case R_DO_CHALLENGE: return "CHALLEGNE";
case R_DO_RELEASE_DEMAND: return "RELEASE_DEMAND";
case R_DO_SGROUP_MERGE: return "SGROUP_MERGE";
}
return "enum _R_ACTION unknown";
}
#define R_IS_ACTIVE(r) ((r)->state == WREPL_STATE_ACTIVE)
#define R_IS_RELEASED(r) ((r)->state == WREPL_STATE_RELEASED)
#define R_IS_TOMBSTONE(r) ((r)->state == WREPL_STATE_TOMBSTONE)
#define R_IS_UNIQUE(r) ((r)->type == WREPL_TYPE_UNIQUE)
#define R_IS_GROUP(r) ((r)->type == WREPL_TYPE_GROUP)
#define R_IS_SGROUP(r) ((r)->type == WREPL_TYPE_SGROUP)
#define R_IS_MHOMED(r) ((r)->type == WREPL_TYPE_MHOMED)
/* blindly overwrite records from the same owner in all cases */
static enum _R_ACTION replace_same_owner(struct winsdb_record *r1, struct wrepl_name *r2)
{
/* REPLACE */
return R_DO_REPLACE;
}
static BOOL r_1_is_subset_of_2_address_list(struct winsdb_record *r1, struct wrepl_name *r2, BOOL check_owners)
{
uint32_t i,j;
size_t len = winsdb_addr_list_length(r1->addresses);
for (i=0; i < len; i++) {
BOOL found = False;
for (j=0; j < r2->num_addresses; j++) {
if (strcmp(r1->addresses[i]->address, r2->addresses[j].address) != 0) {
continue;
}
if (check_owners && strcmp(r1->addresses[i]->wins_owner, r2->addresses[j].owner) != 0) {
return False;
}
found = True;
break;
}
if (!found) return False;
}
return True;
}
static BOOL r_1_is_superset_of_2_address_list(struct winsdb_record *r1, struct wrepl_name *r2, BOOL check_owners)
{
uint32_t i,j;
size_t len = winsdb_addr_list_length(r1->addresses);
for (i=0; i < r2->num_addresses; i++) {
BOOL found = False;
for (j=0; j < len; j++) {
if (strcmp(r2->addresses[i].address, r1->addresses[j]->address) != 0) {
continue;
}
if (check_owners && strcmp(r2->addresses[i].owner, r1->addresses[j]->wins_owner) != 0) {
return False;
}
found = True;
break;
}
if (!found) return False;
}
return True;
}
static BOOL r_1_is_same_as_2_address_list(struct winsdb_record *r1, struct wrepl_name *r2, BOOL check_owners)
{
size_t len = winsdb_addr_list_length(r1->addresses);
if (len != r2->num_addresses) {
return False;
}
return r_1_is_superset_of_2_address_list(r1, r2, check_owners);
}
static BOOL r_contains_addrs_from_owner(struct winsdb_record *r1, const char *owner)
{
uint32_t i;
size_t len = winsdb_addr_list_length(r1->addresses);
for (i=0; i < len; i++) {
if (strcmp(r1->addresses[i]->wins_owner, owner) == 0) {
return True;
}
}
return False;
}
/*
UNIQUE,ACTIVE vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
UNIQUE,ACTIVE vs. UNIQUE,TOMBSTONE with different ip(s) => NOT REPLACE
UNIQUE,RELEASED vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
UNIQUE,RELEASED vs. UNIQUE,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. UNIQUE,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,ACTIVE vs. GROUP,ACTIVE with different ip(s) => REPLACE
UNIQUE,ACTIVE vs. GROUP,TOMBSTONE with same ip(s) => NOT REPLACE
UNIQUE,RELEASED vs. GROUP,ACTIVE with different ip(s) => REPLACE
UNIQUE,RELEASED vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. GROUP,ACTIVE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,ACTIVE vs. SGROUP,ACTIVE with same ip(s) => NOT REPLACE
UNIQUE,ACTIVE vs. SGROUP,TOMBSTONE with same ip(s) => NOT REPLACE
UNIQUE,RELEASED vs. SGROUP,ACTIVE with different ip(s) => REPLACE
UNIQUE,RELEASED vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. SGROUP,ACTIVE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,ACTIVE vs. MHOMED,ACTIVE with different ip(s) => REPLACE
UNIQUE,ACTIVE vs. MHOMED,TOMBSTONE with same ip(s) => NOT REPLACE
UNIQUE,RELEASED vs. MHOMED,ACTIVE with different ip(s) => REPLACE
UNIQUE,RELEASED vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. MHOMED,ACTIVE with different ip(s) => REPLACE
UNIQUE,TOMBSTONE vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
*/
static enum _R_ACTION replace_unique_replica_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (!R_IS_SGROUP(r2) && R_IS_ACTIVE(r2)) {
/* REPLACE */
return R_DO_REPLACE;
}
/* NOT REPLACE */
return R_NOT_REPLACE;
}
/*
GROUP,ACTIVE vs. UNIQUE,ACTIVE with same ip(s) => NOT REPLACE
GROUP,ACTIVE vs. UNIQUE,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,RELEASED vs. UNIQUE,ACTIVE with same ip(s) => NOT REPLACE
GROUP,RELEASED vs. UNIQUE,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,TOMBSTONE vs. UNIQUE,ACTIVE with same ip(s) => NOT REPLACE
GROUP,TOMBSTONE vs. UNIQUE,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,ACTIVE vs. GROUP,ACTIVE with same ip(s) => NOT REPLACE
GROUP,ACTIVE vs. GROUP,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,RELEASED vs. GROUP,ACTIVE with different ip(s) => REPLACE
GROUP,RELEASED vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
GROUP,TOMBSTONE vs. GROUP,ACTIVE with different ip(s) => REPLACE
GROUP,TOMBSTONE vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
GROUP,ACTIVE vs. SGROUP,ACTIVE with same ip(s) => NOT REPLACE
GROUP,ACTIVE vs. SGROUP,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,RELEASED vs. SGROUP,ACTIVE with different ip(s) => REPLACE
GROUP,RELEASED vs. SGROUP,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,TOMBSTONE vs. SGROUP,ACTIVE with different ip(s) => REPLACE
GROUP,TOMBSTONE vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
GROUP,ACTIVE vs. MHOMED,ACTIVE with same ip(s) => NOT REPLACE
GROUP,ACTIVE vs. MHOMED,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,RELEASED vs. MHOMED,ACTIVE with same ip(s) => NOT REPLACE
GROUP,RELEASED vs. MHOMED,TOMBSTONE with same ip(s) => NOT REPLACE
GROUP,TOMBSTONE vs. MHOMED,ACTIVE with different ip(s) => REPLACE
GROUP,TOMBSTONE vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
*/
static enum _R_ACTION replace_group_replica_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1) && R_IS_GROUP(r2)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (R_IS_TOMBSTONE(r1) && !R_IS_UNIQUE(r2)) {
/* REPLACE */
return R_DO_REPLACE;
}
/* NOT REPLACE */
return R_NOT_REPLACE;
}
/*
SGROUP,ACTIVE vs. UNIQUE,ACTIVE with same ip(s) => NOT REPLACE
SGROUP,ACTIVE vs. UNIQUE,TOMBSTONE with same ip(s) => NOT REPLACE
SGROUP,RELEASED vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
SGROUP,RELEASED vs. UNIQUE,TOMBSTONE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. UNIQUE,TOMBSTONE with different ip(s) => REPLACE
SGROUP,ACTIVE vs. GROUP,ACTIVE with same ip(s) => NOT REPLACE
SGROUP,ACTIVE vs. GROUP,TOMBSTONE with same ip(s) => NOT REPLACE
SGROUP,RELEASED vs. GROUP,ACTIVE with different ip(s) => REPLACE
SGROUP,RELEASED vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. GROUP,ACTIVE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
SGROUP,RELEASED vs. SGROUP,ACTIVE with different ip(s) => REPLACE
SGROUP,RELEASED vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. SGROUP,ACTIVE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
SGROUP,ACTIVE vs. MHOMED,ACTIVE with same ip(s) => NOT REPLACE
SGROUP,ACTIVE vs. MHOMED,TOMBSTONE with same ip(s) => NOT REPLACE
SGROUP,RELEASED vs. MHOMED,ACTIVE with different ip(s) => REPLACE
SGROUP,RELEASED vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. MHOMED,ACTIVE with different ip(s) => REPLACE
SGROUP,TOMBSTONE vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:A_3_4 => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:NULL => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_X_3_4 vs. B:A_3_4 => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4 vs. B:A_3_4 => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:A_3_4_OWNER_B => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_OWNER_B vs. B:A_3_4 => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:B_3_4 => C:A_3_4_B_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:A_3_4 => B:A_3_4_X_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:X_3_4 vs. B:A_3_4 => C:A_3_4_X_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_X_3_4 vs. B:A_3_4_OWNER_B => B:A_3_4_OWNER_B_X_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:B_3_4_X_1_2 => C:B_3_4_X_1_2_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:NULL => B:X_3_4 => SGROUP_MERGE
this is a bit strange, incoming tombstone replicas always replace old replicas:
SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:NULL => B:NULL => REPLACE
SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:A_3_4 => B:A_3_4 => REPLACE
SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:B_3_4 => B:B_3_4 => REPLACE
SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:B_3_4_X_3_4 => B:B_3_4_X_3_4 => REPLACE
*/
static enum _R_ACTION replace_sgroup_replica_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (!R_IS_SGROUP(r2)) {
/* NOT REPLACE */
return R_NOT_REPLACE;
}
/*
* this is strange, but correct
* the incoming tombstone replace the current active
* record
*/
if (!R_IS_ACTIVE(r2)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (r2->num_addresses == 0) {
if (r_contains_addrs_from_owner(r1, r2->owner)) {
/* not handled here: MERGE */
return R_DO_SGROUP_MERGE;
}
/* NOT REPLACE */
return R_NOT_REPLACE;
}
if (r_1_is_superset_of_2_address_list(r1, r2, True)) {
/* NOT REPLACE */
return R_NOT_REPLACE;
}
if (r_1_is_same_as_2_address_list(r1, r2, False)) {
/* REPLACE */
return R_DO_REPLACE;
}
/* not handled here: MERGE */
return R_DO_SGROUP_MERGE;
}
/*
MHOMED,ACTIVE vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
MHOMED,ACTIVE vs. UNIQUE,TOMBSTONE with same ip(s) => NOT REPLACE
MHOMED,RELEASED vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
MHOMED,RELEASED vs. UNIQUE,TOMBSTONE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. UNIQUE,ACTIVE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. UNIQUE,TOMBSTONE with different ip(s) => REPLACE
MHOMED,ACTIVE vs. GROUP,ACTIVE with different ip(s) => REPLACE
MHOMED,ACTIVE vs. GROUP,TOMBSTONE with same ip(s) => NOT REPLACE
MHOMED,RELEASED vs. GROUP,ACTIVE with different ip(s) => REPLACE
MHOMED,RELEASED vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. GROUP,ACTIVE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. GROUP,TOMBSTONE with different ip(s) => REPLACE
MHOMED,ACTIVE vs. SGROUP,ACTIVE with same ip(s) => NOT REPLACE
MHOMED,ACTIVE vs. SGROUP,TOMBSTONE with same ip(s) => NOT REPLACE
MHOMED,RELEASED vs. SGROUP,ACTIVE with different ip(s) => REPLACE
MHOMED,RELEASED vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. SGROUP,ACTIVE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. SGROUP,TOMBSTONE with different ip(s) => REPLACE
MHOMED,ACTIVE vs. MHOMED,ACTIVE with different ip(s) => REPLACE
MHOMED,ACTIVE vs. MHOMED,TOMBSTONE with same ip(s) => NOT REPLACE
MHOMED,RELEASED vs. MHOMED,ACTIVE with different ip(s) => REPLACE
MHOMED,RELEASED vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. MHOMED,ACTIVE with different ip(s) => REPLACE
MHOMED,TOMBSTONE vs. MHOMED,TOMBSTONE with different ip(s) => REPLACE
*/
static enum _R_ACTION replace_mhomed_replica_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (!R_IS_SGROUP(r2) && R_IS_ACTIVE(r2)) {
/* REPLACE */
return R_DO_REPLACE;
}
/* NOT REPLACE */
return R_NOT_REPLACE;
}
/*
active:
_UA_UA_SI_U<00> => REPLACE
_UA_UA_DI_P<00> => NOT REPLACE
_UA_UA_DI_O<00> => NOT REPLACE
_UA_UA_DI_N<00> => REPLACE
_UA_UT_SI_U<00> => NOT REPLACE
_UA_UT_DI_U<00> => NOT REPLACE
_UA_GA_SI_R<00> => REPLACE
_UA_GA_DI_R<00> => REPLACE
_UA_GT_SI_U<00> => NOT REPLACE
_UA_GT_DI_U<00> => NOT REPLACE
_UA_SA_SI_R<00> => REPLACE
_UA_SA_DI_R<00> => REPLACE
_UA_ST_SI_U<00> => NOT REPLACE
_UA_ST_DI_U<00> => NOT REPLACE
_UA_MA_SI_U<00> => REPLACE
_UA_MA_SP_U<00> => REPLACE
_UA_MA_DI_P<00> => NOT REPLACE
_UA_MA_DI_O<00> => NOT REPLACE
_UA_MA_DI_N<00> => REPLACE
_UA_MT_SI_U<00> => NOT REPLACE
_UA_MT_DI_U<00> => NOT REPLACE
Test Replica vs. owned active: some more UNIQUE,MHOMED combinations
_UA_UA_DI_A<00> => MHOMED_MERGE
_UA_MA_DI_A<00> => MHOMED_MERGE
released:
_UR_UA_SI<00> => REPLACE
_UR_UA_DI<00> => REPLACE
_UR_UT_SI<00> => REPLACE
_UR_UT_DI<00> => REPLACE
_UR_GA_SI<00> => REPLACE
_UR_GA_DI<00> => REPLACE
_UR_GT_SI<00> => REPLACE
_UR_GT_DI<00> => REPLACE
_UR_SA_SI<00> => REPLACE
_UR_SA_DI<00> => REPLACE
_UR_ST_SI<00> => REPLACE
_UR_ST_DI<00> => REPLACE
_UR_MA_SI<00> => REPLACE
_UR_MA_DI<00> => REPLACE
_UR_MT_SI<00> => REPLACE
_UR_MT_DI<00> => REPLACE
*/
static enum _R_ACTION replace_unique_owned_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (!R_IS_ACTIVE(r2)) {
/* NOT REPLACE, and PROPAGATE */
return R_DO_PROPAGATE;
}
if (R_IS_GROUP(r2) || R_IS_SGROUP(r2)) {
/* REPLACE and send a release demand to the old name owner */
return R_DO_RELEASE_DEMAND;
}
/*
* here we only have unique,active,owned vs.
* is unique,active,replica or mhomed,active,replica
*/
if (r_1_is_subset_of_2_address_list(r1, r2, False)) {
/*
* if r1 has a subset(or same) of the addresses of r2
* <=>
* if r2 has a superset(or same) of the addresses of r1
*
* then replace the record
*/
return R_DO_REPLACE;
}
/*
* in any other case, we need to do
* a name request to the old name holder
* to see if it's still there...
*/
return R_DO_CHALLENGE;
}
/*
active:
_GA_UA_SI_U<00> => NOT REPLACE
_GA_UA_DI_U<00> => NOT REPLACE
_GA_UT_SI_U<00> => NOT REPLACE
_GA_UT_DI_U<00> => NOT REPLACE
_GA_GA_SI_U<00> => REPLACE
_GA_GA_DI_U<00> => REPLACE
_GA_GT_SI_U<00> => NOT REPLACE
_GA_GT_DI_U<00> => NOT REPLACE
_GA_SA_SI_U<00> => NOT REPLACE
_GA_SA_DI_U<00> => NOT REPLACE
_GA_ST_SI_U<00> => NOT REPLACE
_GA_ST_DI_U<00> => NOT REPLACE
_GA_MA_SI_U<00> => NOT REPLACE
_GA_MA_DI_U<00> => NOT REPLACE
_GA_MT_SI_U<00> => NOT REPLACE
_GA_MT_DI_U<00> => NOT REPLACE
released:
_GR_UA_SI<00> => NOT REPLACE
_GR_UA_DI<00> => NOT REPLACE
_GR_UT_SI<00> => NOT REPLACE
_GR_UT_DI<00> => NOT REPLACE
_GR_GA_SI<00> => REPLACE
_GR_GA_DI<00> => REPLACE
_GR_GT_SI<00> => REPLACE
_GR_GT_DI<00> => REPLACE
_GR_SA_SI<00> => NOT REPLACE
_GR_SA_DI<00> => NOT REPLACE
_GR_ST_SI<00> => NOT REPLACE
_GR_ST_DI<00> => NOT REPLACE
_GR_MA_SI<00> => NOT REPLACE
_GR_MA_DI<00> => NOT REPLACE
_GR_MT_SI<00> => NOT REPLACE
_GR_MT_DI<00> => NOT REPLACE
*/
static enum _R_ACTION replace_group_owned_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (R_IS_GROUP(r1) && R_IS_GROUP(r2)) {
if (!R_IS_ACTIVE(r1) || R_IS_ACTIVE(r2)) {
/* REPLACE */
return R_DO_REPLACE;
}
}
/* NOT REPLACE, but PROPAGATE */
return R_DO_PROPAGATE;
}
/*
active (not sgroup vs. sgroup yet!):
_SA_UA_SI_U<1c> => NOT REPLACE
_SA_UA_DI_U<1c> => NOT REPLACE
_SA_UT_SI_U<1c> => NOT REPLACE
_SA_UT_DI_U<1c> => NOT REPLACE
_SA_GA_SI_U<1c> => NOT REPLACE
_SA_GA_DI_U<1c> => NOT REPLACE
_SA_GT_SI_U<1c> => NOT REPLACE
_SA_GT_DI_U<1c> => NOT REPLACE
_SA_MA_SI_U<1c> => NOT REPLACE
_SA_MA_DI_U<1c> => NOT REPLACE
_SA_MT_SI_U<1c> => NOT REPLACE
_SA_MT_DI_U<1c> => NOT REPLACE
Test Replica vs. owned active: SGROUP vs. SGROUP tests
_SA_SA_DI_U<1c> => SGROUP_MERGE
_SA_SA_SI_U<1c> => SGROUP_MERGE
_SA_SA_SP_U<1c> => SGROUP_MERGE
_SA_SA_SB_U<1c> => SGROUP_MERGE
_SA_ST_DI_U<1c> => NOT REPLACE
_SA_ST_SI_U<1c> => NOT REPLACE
_SA_ST_SP_U<1c> => NOT REPLACE
_SA_ST_SB_U<1c> => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,* is not handled here!
released:
_SR_UA_SI<1c> => REPLACE
_SR_UA_DI<1c> => REPLACE
_SR_UT_SI<1c> => REPLACE
_SR_UT_DI<1c> => REPLACE
_SR_GA_SI<1c> => REPLACE
_SR_GA_DI<1c> => REPLACE
_SR_GT_SI<1c> => REPLACE
_SR_GT_DI<1c> => REPLACE
_SR_SA_SI<1c> => REPLACE
_SR_SA_DI<1c> => REPLACE
_SR_ST_SI<1c> => REPLACE
_SR_ST_DI<1c> => REPLACE
_SR_MA_SI<1c> => REPLACE
_SR_MA_DI<1c> => REPLACE
_SR_MT_SI<1c> => REPLACE
_SR_MT_DI<1c> => REPLACE
*/
static enum _R_ACTION replace_sgroup_owned_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (!R_IS_SGROUP(r2) || !R_IS_ACTIVE(r2)) {
/* NOT REPLACE, but PROPAGATE */
return R_DO_PROPAGATE;
}
if (r_1_is_same_as_2_address_list(r1, r2, True)) {
/*
* as we're the old owner and the addresses and their
* owners are identical
*/
return R_NOT_REPLACE;
}
/* not handled here: MERGE */
return R_DO_SGROUP_MERGE;
}
/*
active:
_MA_UA_SI_U<00> => REPLACE
_MA_UA_DI_P<00> => NOT REPLACE
_MA_UA_DI_O<00> => NOT REPLACE
_MA_UA_DI_N<00> => REPLACE
_MA_UT_SI_U<00> => NOT REPLACE
_MA_UT_DI_U<00> => NOT REPLACE
_MA_GA_SI_R<00> => REPLACE
_MA_GA_DI_R<00> => REPLACE
_MA_GT_SI_U<00> => NOT REPLACE
_MA_GT_DI_U<00> => NOT REPLACE
_MA_SA_SI_R<00> => REPLACE
_MA_SA_DI_R<00> => REPLACE
_MA_ST_SI_U<00> => NOT REPLACE
_MA_ST_DI_U<00> => NOT REPLACE
_MA_MA_SI_U<00> => REPLACE
_MA_MA_SP_U<00> => REPLACE
_MA_MA_DI_P<00> => NOT REPLACE
_MA_MA_DI_O<00> => NOT REPLACE
_MA_MA_DI_N<00> => REPLACE
_MA_MT_SI_U<00> => NOT REPLACE
_MA_MT_DI_U<00> => NOT REPLACE
Test Replica vs. owned active: some more MHOMED combinations
_MA_MA_SP_U<00> => REPLACE
_MA_MA_SM_U<00> => REPLACE
_MA_MA_SB_P<00> => MHOMED_MERGE
_MA_MA_SB_A<00> => MHOMED_MERGE
_MA_MA_SB_PRA<00> => NOT REPLACE
_MA_MA_SB_O<00> => NOT REPLACE
_MA_MA_SB_N<00> => REPLACE
Test Replica vs. owned active: some more UNIQUE,MHOMED combinations
_MA_UA_SB_P<00> => MHOMED_MERGE
released:
_MR_UA_SI<00> => REPLACE
_MR_UA_DI<00> => REPLACE
_MR_UT_SI<00> => REPLACE
_MR_UT_DI<00> => REPLACE
_MR_GA_SI<00> => REPLACE
_MR_GA_DI<00> => REPLACE
_MR_GT_SI<00> => REPLACE
_MR_GT_DI<00> => REPLACE
_MR_SA_SI<00> => REPLACE
_MR_SA_DI<00> => REPLACE
_MR_ST_SI<00> => REPLACE
_MR_ST_DI<00> => REPLACE
_MR_MA_SI<00> => REPLACE
_MR_MA_DI<00> => REPLACE
_MR_MT_SI<00> => REPLACE
_MR_MT_DI<00> => REPLACE
*/
static enum _R_ACTION replace_mhomed_owned_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
{
if (!R_IS_ACTIVE(r1)) {
/* REPLACE */
return R_DO_REPLACE;
}
if (!R_IS_ACTIVE(r2)) {
/* NOT REPLACE, but PROPAGATE */
return R_DO_PROPAGATE;
}
if (R_IS_GROUP(r2) || R_IS_SGROUP(r2)) {
/* REPLACE and send a release demand to the old name owner */
return R_DO_RELEASE_DEMAND;
}
/*
* here we only have mhomed,active,owned vs.
* is unique,active,replica or mhomed,active,replica
*/
if (r_1_is_subset_of_2_address_list(r1, r2, False)) {
/*
* if r1 has a subset(or same) of the addresses of r2
* <=>
* if r2 has a superset(or same) of the addresses of r1
*
* then replace the record
*/
return R_DO_REPLACE;
}
/*
* in any other case, we need to do
* a name request to the old name holder
* to see if it's still there...
*/
return R_DO_CHALLENGE;
}
static NTSTATUS r_do_add(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
struct winsdb_record *rec;
uint32_t i;
uint8_t ret;
rec = talloc(mem_ctx, struct winsdb_record);
NT_STATUS_HAVE_NO_MEMORY(rec);
rec->name = &replica->name;
rec->type = replica->type;
rec->state = replica->state;
rec->node = replica->node;
rec->is_static = replica->is_static;
rec->expire_time= time(NULL) + partner->service->config.verify_interval;
rec->version = replica->version_id;
rec->wins_owner = replica->owner;
rec->addresses = winsdb_addr_list_make(rec);
NT_STATUS_HAVE_NO_MEMORY(rec->addresses);
rec->registered_by = NULL;
for (i=0; i < replica->num_addresses; i++) {
/* TODO: find out if rec->expire_time is correct here */
rec->addresses = winsdb_addr_list_add(rec->addresses,
replica->addresses[i].address,
replica->addresses[i].owner,
rec->expire_time);
NT_STATUS_HAVE_NO_MEMORY(rec->addresses);
}
ret = winsdb_add(partner->service->wins_db, rec, 0);
if (ret != NBT_RCODE_OK) {
DEBUG(0,("Failed to add record %s: %u\n",
nbt_name_string(mem_ctx, &replica->name), ret));
return NT_STATUS_FOOBAR;
}
DEBUG(4,("added record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
return NT_STATUS_OK;
}
static NTSTATUS r_do_replace(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
uint32_t i;
uint8_t ret;
rec->name = &replica->name;
rec->type = replica->type;
rec->state = replica->state;
rec->node = replica->node;
rec->is_static = replica->is_static;
rec->expire_time= time(NULL) + partner->service->config.verify_interval;
rec->version = replica->version_id;
rec->wins_owner = replica->owner;
rec->addresses = winsdb_addr_list_make(rec);
NT_STATUS_HAVE_NO_MEMORY(rec->addresses);
rec->registered_by = NULL;
for (i=0; i < replica->num_addresses; i++) {
/* TODO: find out if rec->expire_time is correct here */
rec->addresses = winsdb_addr_list_add(rec->addresses,
replica->addresses[i].address,
replica->addresses[i].owner,
rec->expire_time);
NT_STATUS_HAVE_NO_MEMORY(rec->addresses);
}
ret = winsdb_modify(partner->service->wins_db, rec, 0);
if (ret != NBT_RCODE_OK) {
DEBUG(0,("Failed to replace record %s: %u\n",
nbt_name_string(mem_ctx, &replica->name), ret));
return NT_STATUS_FOOBAR;
}
DEBUG(4,("replaced record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
return NT_STATUS_OK;
}
static NTSTATUS r_not_replace(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
DEBUG(4,("not replace record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
return NT_STATUS_OK;
}
static NTSTATUS r_do_propagate(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
uint8_t ret;
uint32_t modify_flags;
/*
* allocate a new version id for the record to that it'll be replicated
*/
modify_flags = WINSDB_FLAG_ALLOC_VERSION | WINSDB_FLAG_TAKE_OWNERSHIP;
ret = winsdb_modify(partner->service->wins_db, rec, modify_flags);
if (ret != NBT_RCODE_OK) {
DEBUG(0,("Failed to replace record %s: %u\n",
nbt_name_string(mem_ctx, &replica->name), ret));
return NT_STATUS_FOOBAR;
}
DEBUG(4,("propagated record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
return NT_STATUS_OK;
}
/*
Test Replica vs. owned active: some more MHOMED combinations
_MA_MA_SP_U<00>: C:MHOMED vs. B:ALL => B:ALL => REPLACE
_MA_MA_SM_U<00>: C:MHOMED vs. B:MHOMED => B:MHOMED => REPLACE
_MA_MA_SB_P<00>: C:MHOMED vs. B:BEST (C:MHOMED) => B:MHOMED => MHOMED_MERGE
_MA_MA_SB_A<00>: C:MHOMED vs. B:BEST (C:ALL) => B:MHOMED => MHOMED_MERGE
_MA_MA_SB_PRA<00>: C:MHOMED vs. B:BEST (C:BEST) => C:MHOMED => NOT REPLACE
_MA_MA_SB_O<00>: C:MHOMED vs. B:BEST (B:B_3_4) =>C:MHOMED => NOT REPLACE
_MA_MA_SB_N<00>: C:MHOMED vs. B:BEST (NEGATIVE) => B:BEST => REPLACE
Test Replica vs. owned active: some more UNIQUE,MHOMED combinations
_MA_UA_SB_P<00>: C:MHOMED vs. B:UNIQUE,BEST (C:MHOMED) => B:MHOMED => MHOMED_MERGE
_UA_UA_DI_PRA<00>: C:BEST vs. B:BEST2 (C:BEST2,LR:BEST2) => C:BEST => NOT REPLACE
_UA_UA_DI_A<00>: C:BEST vs. B:BEST2 (C:ALL) => B:MHOMED => MHOMED_MERGE
_UA_MA_DI_A<00>: C:BEST vs. B:BEST2 (C:ALL) => B:MHOMED => MHOMED_MERGE
*/
static NTSTATUS r_do_mhomed_merge(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
struct winsdb_record *merge;
uint32_t i,j;
uint8_t ret;
size_t len;
merge = talloc(mem_ctx, struct winsdb_record);
NT_STATUS_HAVE_NO_MEMORY(merge);
merge->name = &replica->name;
merge->type = WREPL_TYPE_MHOMED;
merge->state = replica->state;
merge->node = replica->node;
merge->is_static = replica->is_static;
merge->expire_time = time(NULL) + partner->service->config.verify_interval;
merge->version = replica->version_id;
merge->wins_owner = replica->owner;
merge->addresses = winsdb_addr_list_make(merge);
NT_STATUS_HAVE_NO_MEMORY(merge->addresses);
merge->registered_by = NULL;
for (i=0; i < replica->num_addresses; i++) {
/* TODO: find out if rec->expire_time is correct here */
merge->addresses = winsdb_addr_list_add(merge->addresses,
replica->addresses[i].address,
replica->addresses[i].owner,
merge->expire_time);
NT_STATUS_HAVE_NO_MEMORY(merge->addresses);
}
len = winsdb_addr_list_length(rec->addresses);
for (i=0; i < len; i++) {
BOOL found = False;
for (j=0; j < replica->num_addresses; j++) {
if (strcmp(replica->addresses[j].address, rec->addresses[i]->address) == 0) {
found = True;
break;
}
}
if (found) continue;
/* TODO: find out if rec->expire_time is correct here */
merge->addresses = winsdb_addr_list_add(merge->addresses,
rec->addresses[i]->address,
rec->addresses[i]->wins_owner,
merge->expire_time);
NT_STATUS_HAVE_NO_MEMORY(merge->addresses);
}
ret = winsdb_modify(partner->service->wins_db, merge, 0);
if (ret != NBT_RCODE_OK) {
DEBUG(0,("Failed to modify mhomed merge record %s: %u\n",
nbt_name_string(mem_ctx, &replica->name), ret));
return NT_STATUS_FOOBAR;
}
DEBUG(4,("mhomed merge record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
return NT_STATUS_OK;
}
struct r_do_challenge_state {
struct messaging_context *msg_ctx;
struct wreplsrv_partner *partner;
struct winsdb_record *rec;
struct wrepl_wins_owner owner;
struct wrepl_name replica;
struct nbtd_proxy_wins_challenge r;
};
static void r_do_late_release_demand_handler(struct irpc_request *ireq)
{
NTSTATUS status;
struct r_do_challenge_state *state = talloc_get_type(ireq->async.private,
struct r_do_challenge_state);
status = irpc_call_recv(ireq);
/* don't care about the result */
talloc_free(state);
}
static NTSTATUS r_do_late_release_demand(struct r_do_challenge_state *state)
{
struct irpc_request *ireq;
uint32_t *nbt_servers;
struct nbtd_proxy_wins_release_demand r;
uint32_t i;
DEBUG(4,("late release demand record %s\n",
nbt_name_string(state, &state->replica.name)));
nbt_servers = irpc_servers_byname(state->msg_ctx, "nbt_server");
if ((nbt_servers == NULL) || (nbt_servers[0] == 0)) {
return NT_STATUS_INTERNAL_ERROR;
}
r.in.name = state->replica.name;
r.in.num_addrs = state->r.out.num_addrs;
r.in.addrs = talloc_array(state, struct nbtd_proxy_wins_addr, r.in.num_addrs);
NT_STATUS_HAVE_NO_MEMORY(r.in.addrs);
/* TODO: fix pidl to handle inline ipv4address arrays */
for (i=0; i < r.in.num_addrs; i++) {
r.in.addrs[i].addr = state->r.out.addrs[i].addr;
}
ireq = IRPC_CALL_SEND(state->msg_ctx, nbt_servers[0],
irpc, NBTD_PROXY_WINS_RELEASE_DEMAND,
&r, state);
NT_STATUS_HAVE_NO_MEMORY(ireq);
ireq->async.fn = r_do_late_release_demand_handler;
ireq->async.private = state;
return NT_STATUS_OK;
}
/*
Test Replica vs. owned active: some more MHOMED combinations
_MA_MA_SP_U<00>: C:MHOMED vs. B:ALL => B:ALL => REPLACE
_MA_MA_SM_U<00>: C:MHOMED vs. B:MHOMED => B:MHOMED => REPLACE
_MA_MA_SB_P<00>: C:MHOMED vs. B:BEST (C:MHOMED) => B:MHOMED => MHOMED_MERGE
_MA_MA_SB_A<00>: C:MHOMED vs. B:BEST (C:ALL) => B:MHOMED => MHOMED_MERGE
_MA_MA_SB_PRA<00>: C:MHOMED vs. B:BEST (C:BEST) => C:MHOMED => NOT REPLACE
_MA_MA_SB_O<00>: C:MHOMED vs. B:BEST (B:B_3_4) =>C:MHOMED => NOT REPLACE
_MA_MA_SB_N<00>: C:MHOMED vs. B:BEST (NEGATIVE) => B:BEST => REPLACE
Test Replica vs. owned active: some more UNIQUE,MHOMED combinations
_MA_UA_SB_P<00>: C:MHOMED vs. B:UNIQUE,BEST (C:MHOMED) => B:MHOMED => MHOMED_MERGE
_UA_UA_DI_PRA<00>: C:BEST vs. B:BEST2 (C:BEST2,LR:BEST2) => C:BEST => NOT REPLACE
_UA_UA_DI_A<00>: C:BEST vs. B:BEST2 (C:ALL) => B:MHOMED => MHOMED_MERGE
_UA_MA_DI_A<00>: C:BEST vs. B:BEST2 (C:ALL) => B:MHOMED => MHOMED_MERGE
*/
static void r_do_challenge_handler(struct irpc_request *ireq)
{
NTSTATUS status;
struct r_do_challenge_state *state = talloc_get_type(ireq->async.private,
struct r_do_challenge_state);
BOOL old_is_subset = False;
BOOL new_is_subset = False;
BOOL found = False;
uint32_t i,j;
uint32_t num_rec_addrs;
status = irpc_call_recv(ireq);
DEBUG(4,("r_do_challenge_handler: %s: %s\n",
nbt_name_string(state, &state->replica.name), nt_errstr(status)));
if (NT_STATUS_EQUAL(NT_STATUS_IO_TIMEOUT, status) ||
NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_NOT_FOUND, status)) {
r_do_replace(state->partner, state, state->rec, &state->owner, &state->replica);
talloc_free(state);
return;
}
for (i=0; i < state->replica.num_addresses; i++) {
found = False;
new_is_subset = True;
for (j=0; j < state->r.out.num_addrs; j++) {
if (strcmp(state->replica.addresses[i].address, state->r.out.addrs[j].addr) == 0) {
found = True;
break;
}
}
if (found) continue;
new_is_subset = False;
break;
}
if (!new_is_subset) {
r_not_replace(state->partner, state, state->rec, &state->owner, &state->replica);
talloc_free(state);
return;
}
num_rec_addrs = winsdb_addr_list_length(state->rec->addresses);
for (i=0; i < num_rec_addrs; i++) {
found = False;
old_is_subset = True;
for (j=0; j < state->r.out.num_addrs; j++) {
if (strcmp(state->rec->addresses[i]->address, state->r.out.addrs[j].addr) == 0) {
found = True;
break;
}
}
if (found) continue;
old_is_subset = False;
break;
}
if (!old_is_subset) {
r_do_late_release_demand(state);
/*
* don't free state here, because we pass it down,
* and r_do_late_release_demand() will free it
*/
return;
}
r_do_mhomed_merge(state->partner, state, state->rec, &state->owner, &state->replica);
talloc_free(state);
}
static NTSTATUS r_do_challenge(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
struct irpc_request *ireq;
struct r_do_challenge_state *state;
uint32_t *nbt_servers;
const char **addrs;
uint32_t i;
DEBUG(4,("challenge record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
state = talloc_zero(mem_ctx, struct r_do_challenge_state);
NT_STATUS_HAVE_NO_MEMORY(state);
state->msg_ctx = partner->service->task->msg_ctx;
state->partner = partner;
state->rec = talloc_steal(state, rec);
state->owner = *owner;
state->replica = *replica;
/* some stuff to have valid memory pointers in the async complete function */
state->replica.name = *state->rec->name;
talloc_steal(state, replica->owner);
talloc_steal(state, replica->addresses);
nbt_servers = irpc_servers_byname(state->msg_ctx, "nbt_server");
if ((nbt_servers == NULL) || (nbt_servers[0] == 0)) {
return NT_STATUS_INTERNAL_ERROR;
}
state->r.in.name = *rec->name;
state->r.in.num_addrs = winsdb_addr_list_length(rec->addresses);
state->r.in.addrs = talloc_array(state, struct nbtd_proxy_wins_addr, state->r.in.num_addrs);
NT_STATUS_HAVE_NO_MEMORY(state->r.in.addrs);
/* TODO: fix pidl to handle inline ipv4address arrays */
addrs = winsdb_addr_string_list(state->r.in.addrs, rec->addresses);
NT_STATUS_HAVE_NO_MEMORY(addrs);
for (i=0; i < state->r.in.num_addrs; i++) {
state->r.in.addrs[i].addr = addrs[i];
}
ireq = IRPC_CALL_SEND(state->msg_ctx, nbt_servers[0],
irpc, NBTD_PROXY_WINS_CHALLENGE,
&state->r, state);
NT_STATUS_HAVE_NO_MEMORY(ireq);
ireq->async.fn = r_do_challenge_handler;
ireq->async.private = state;
talloc_steal(partner, state);
return NT_STATUS_OK;
}
static void r_do_release_demand_handler(struct irpc_request *ireq)
{
NTSTATUS status;
status = irpc_call_recv(ireq);
/* don't care about the result */
}
static NTSTATUS r_do_release_demand(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
NTSTATUS status;
struct irpc_request *ireq;
uint32_t *nbt_servers;
const char **addrs;
struct winsdb_addr **addresses;
struct nbtd_proxy_wins_release_demand r;
uint32_t i;
/*
* we need to get a reference to the old addresses,
* as we need to send a release demand to them after replacing the record
* and r_do_replace() will modify rec->addresses
*/
addresses = rec->addresses;
status = r_do_replace(partner, mem_ctx, rec, owner, replica);
NT_STATUS_NOT_OK_RETURN(status);
DEBUG(4,("release demand record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
nbt_servers = irpc_servers_byname(partner->service->task->msg_ctx, "nbt_server");
if ((nbt_servers == NULL) || (nbt_servers[0] == 0)) {
return NT_STATUS_INTERNAL_ERROR;
}
r.in.name = *rec->name;
r.in.num_addrs = winsdb_addr_list_length(addresses);
r.in.addrs = talloc_array(partner, struct nbtd_proxy_wins_addr, r.in.num_addrs);
NT_STATUS_HAVE_NO_MEMORY(r.in.addrs);
/* TODO: fix pidl to handle inline ipv4address arrays */
addrs = winsdb_addr_string_list(r.in.addrs, addresses);
NT_STATUS_HAVE_NO_MEMORY(addrs);
for (i=0; i < r.in.num_addrs; i++) {
r.in.addrs[i].addr = addrs[i];
}
ireq = IRPC_CALL_SEND(partner->service->task->msg_ctx, nbt_servers[0],
irpc, NBTD_PROXY_WINS_RELEASE_DEMAND,
&r, partner);
NT_STATUS_HAVE_NO_MEMORY(ireq);
ireq->async.fn = r_do_release_demand_handler;
ireq->async.private = NULL;
return NT_STATUS_OK;
}
/*
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:A_3_4 => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:NULL => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_X_3_4 vs. B:A_3_4 => NOT REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4 vs. B:A_3_4 => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:A_3_4_OWNER_B => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_OWNER_B vs. B:A_3_4 => REPLACE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4 vs. B:B_3_4 => C:A_3_4_B_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:A_3_4 => B:A_3_4_X_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:X_3_4 vs. B:A_3_4 => C:A_3_4_X_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_X_3_4 vs. B:A_3_4_OWNER_B => B:A_3_4_OWNER_B_X_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:B_3_4_X_1_2 => C:B_3_4_X_1_2_3_4 => SGROUP_MERGE
SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:NULL => B:X_3_4 => SGROUP_MERGE
Test Replica vs. owned active: SGROUP vs. SGROUP tests
_SA_SA_DI_U<1c> => SGROUP_MERGE
_SA_SA_SI_U<1c> => SGROUP_MERGE
_SA_SA_SP_U<1c> => SGROUP_MERGE
_SA_SA_SB_U<1c> => SGROUP_MERGE
*/
static NTSTATUS r_do_sgroup_merge(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct winsdb_record *rec,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
struct winsdb_record *merge;
uint32_t modify_flags = 0;
uint32_t i,j;
uint8_t ret;
size_t len;
BOOL changed_old_addrs = False;
BOOL become_owner = True;
merge = talloc(mem_ctx, struct winsdb_record);
NT_STATUS_HAVE_NO_MEMORY(merge);
merge->name = &replica->name;
merge->type = replica->type;
merge->state = replica->state;
merge->node = replica->node;
merge->is_static = replica->is_static;
merge->expire_time = time(NULL) + partner->service->config.verify_interval;
merge->version = replica->version_id;
merge->wins_owner = replica->owner;
merge->addresses = winsdb_addr_list_make(merge);
NT_STATUS_HAVE_NO_MEMORY(merge->addresses);
merge->registered_by = NULL;
len = winsdb_addr_list_length(rec->addresses);
for (i=0; i < len; i++) {
BOOL found = False;
for (j=0; j < replica->num_addresses; j++) {
if (strcmp(rec->addresses[i]->address, replica->addresses[j].address) != 0) {
continue;
}
found = True;
if (strcmp(rec->addresses[i]->wins_owner, replica->addresses[j].owner) != 0) {
changed_old_addrs = True;
break;
}
break;
}
/* if it's also in the replica, it'll added later */
if (found) continue;
/*
* if the address isn't in the replica and is owned by replicas owner,
* it won't be added to the merged record
*/
if (strcmp(rec->addresses[i]->wins_owner, owner->address) == 0) {
changed_old_addrs = True;
continue;
}
/*
* add the address to the merge result, with the old owner and expire_time
*/
merge->addresses = winsdb_addr_list_add(merge->addresses,
rec->addresses[i]->address,
rec->addresses[i]->wins_owner,
rec->addresses[i]->expire_time);
NT_STATUS_HAVE_NO_MEMORY(merge->addresses);
}
for (i=0; i < replica->num_addresses; i++) {
/* TODO: find out if rec->expire_time is correct here */
merge->addresses = winsdb_addr_list_add(merge->addresses,
replica->addresses[i].address,
replica->addresses[i].owner,
merge->expire_time);
NT_STATUS_HAVE_NO_MEMORY(merge->addresses);
}
/* we the old addresses change changed we don't become the owner */
if (changed_old_addrs) {
become_owner = False;
}
/* if we're the owner of the old record, we'll be the owner of the new one too */
if (strcmp(rec->wins_owner, partner->service->wins_db->local_owner)==0) {
become_owner = True;
}
/*
* if the result has no addresses we take the ownership
*/
len = winsdb_addr_list_length(merge->addresses);
if (len == 0) {
become_owner = True;
}
/*
* if addresses of the old record will be changed the replica owner
* will be owner of the merge result, otherwise we take the ownership
*/
if (become_owner) {
modify_flags = WINSDB_FLAG_ALLOC_VERSION | WINSDB_FLAG_TAKE_OWNERSHIP;
}
ret = winsdb_modify(partner->service->wins_db, merge, modify_flags);
if (ret != NBT_RCODE_OK) {
DEBUG(0,("Failed to modify sgroup merge record %s: %u\n",
nbt_name_string(mem_ctx, &replica->name), ret));
return NT_STATUS_FOOBAR;
}
DEBUG(4,("sgroup merge record %s\n",
nbt_name_string(mem_ctx, &replica->name)));
return NT_STATUS_OK;
}
static NTSTATUS wreplsrv_apply_one_record(struct wreplsrv_partner *partner,
TALLOC_CTX *mem_ctx,
struct wrepl_wins_owner *owner,
struct wrepl_name *replica)
{
NTSTATUS status;
struct winsdb_record *rec = NULL;
enum _R_ACTION action = R_INVALID;
BOOL same_owner = False;
BOOL replica_vs_replica = False;
BOOL local_vs_replica = False;
status = winsdb_lookup(partner->service->wins_db,
&replica->name, mem_ctx, &rec);
if (NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_NOT_FOUND, status)) {
return r_do_add(partner, mem_ctx, owner, replica);
}
NT_STATUS_NOT_OK_RETURN(status);
if (strcmp(rec->wins_owner, partner->service->wins_db->local_owner)==0) {
local_vs_replica = True;
} else if (strcmp(rec->wins_owner, owner->address)==0) {
same_owner = True;
} else {
replica_vs_replica = True;
}
if (rec->is_static && !same_owner) {
action = R_NOT_REPLACE;
/*
* if we own the local record, then propagate it back to
* the other wins servers.
* to prevent ping-pong with other servers, we don't do this
* if the replica is static too.
*
* It seems that w2k3 doesn't do this, but I thing that's a bug
* and doing propagation helps to have consistent data on all servers
*/
if (local_vs_replica && !replica->is_static) {
action = R_DO_PROPAGATE;
}
} else if (replica->is_static && !rec->is_static && !same_owner) {
action = R_DO_REPLACE;
} else if (same_owner) {
action = replace_same_owner(rec, replica);
} else if (replica_vs_replica) {
switch (rec->type) {
case WREPL_TYPE_UNIQUE:
action = replace_unique_replica_vs_X_replica(rec, replica);
break;
case WREPL_TYPE_GROUP:
action = replace_group_replica_vs_X_replica(rec, replica);
break;
case WREPL_TYPE_SGROUP:
action = replace_sgroup_replica_vs_X_replica(rec, replica);
break;
case WREPL_TYPE_MHOMED:
action = replace_mhomed_replica_vs_X_replica(rec, replica);
break;
}
} else if (local_vs_replica) {
switch (rec->type) {
case WREPL_TYPE_UNIQUE:
action = replace_unique_owned_vs_X_replica(rec, replica);
break;
case WREPL_TYPE_GROUP:
action = replace_group_owned_vs_X_replica(rec, replica);
break;
case WREPL_TYPE_SGROUP:
action = replace_sgroup_owned_vs_X_replica(rec, replica);
break;
case WREPL_TYPE_MHOMED:
action = replace_mhomed_owned_vs_X_replica(rec, replica);
break;
}
}
DEBUG(4,("apply record %s: %s\n",
nbt_name_string(mem_ctx, &replica->name), _R_ACTION_enum_string(action)));
switch (action) {
case R_INVALID: break;
case R_DO_REPLACE:
return r_do_replace(partner, mem_ctx, rec, owner, replica);
case R_NOT_REPLACE:
return r_not_replace(partner, mem_ctx, rec, owner, replica);
case R_DO_PROPAGATE:
return r_do_propagate(partner, mem_ctx, rec, owner, replica);
case R_DO_CHALLENGE:
return r_do_challenge(partner, mem_ctx, rec, owner, replica);
case R_DO_RELEASE_DEMAND:
return r_do_release_demand(partner, mem_ctx, rec, owner, replica);
case R_DO_SGROUP_MERGE:
return r_do_sgroup_merge(partner, mem_ctx, rec, owner, replica);
}
return NT_STATUS_INTERNAL_ERROR;
}
NTSTATUS wreplsrv_apply_records(struct wreplsrv_partner *partner, struct wreplsrv_pull_names_io *names_io)
{
NTSTATUS status;
uint32_t i;
DEBUG(4,("apply records count[%u]:owner[%s]:min[%llu]:max[%llu]:partner[%s]\n",
names_io->out.num_names, names_io->in.owner.address,
(long long)names_io->in.owner.min_version,
(long long)names_io->in.owner.max_version,
partner->address));
for (i=0; i < names_io->out.num_names; i++) {
TALLOC_CTX *tmp_mem = talloc_new(partner);
NT_STATUS_HAVE_NO_MEMORY(tmp_mem);
status = wreplsrv_apply_one_record(partner, tmp_mem,
&names_io->in.owner,
&names_io->out.names[i]);
talloc_free(tmp_mem);
NT_STATUS_NOT_OK_RETURN(status);
}
status = wreplsrv_add_table(partner->service,
partner->service,
&partner->service->table,
names_io->in.owner.address,
names_io->in.owner.max_version);
NT_STATUS_NOT_OK_RETURN(status);
return NT_STATUS_OK;
}
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