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/*
Unix SMB/CIFS mplementation.
DSDB replication service
Copyright (C) Stefan Metzmacher 2007
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "dsdb/samdb/samdb.h"
#include "auth/auth.h"
#include "smbd/service.h"
#include "lib/events/events.h"
#include "lib/messaging/irpc.h"
#include "dsdb/repl/drepl_service.h"
#include "lib/ldb/include/ldb_errors.h"
#include "lib/util/dlinklist.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/gen_ndr/ndr_drsuapi.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "param/param.h"
static WERROR dreplsrv_refresh_partitions(struct dreplsrv_service *s);
WERROR dreplsrv_load_partitions(struct dreplsrv_service *s)
{
WERROR status;
struct ldb_dn *basedn;
struct ldb_result *r;
struct ldb_message_element *el;
static const char *attrs[] = { "namingContexts", NULL };
uint32_t i;
int ret;
basedn = ldb_dn_new(s, s->samdb, NULL);
W_ERROR_HAVE_NO_MEMORY(basedn);
ret = ldb_search(s->samdb, basedn, LDB_SCOPE_BASE,
"(objectClass=*)", attrs, &r);
talloc_free(basedn);
if (ret != LDB_SUCCESS) {
return WERR_FOOBAR;
} else if (r->count != 1) {
talloc_free(r);
return WERR_FOOBAR;
}
talloc_steal(s, r);
el = ldb_msg_find_element(r->msgs[0], "namingContexts");
if (!el) {
return WERR_FOOBAR;
}
for (i=0; el && i < el->num_values; i++) {
const char *v = (const char *)el->values[i].data;
struct ldb_dn *pdn;
struct dreplsrv_partition *p;
pdn = ldb_dn_new(s, s->samdb, v);
if (!ldb_dn_validate(pdn)) {
return WERR_FOOBAR;
}
p = talloc_zero(s, struct dreplsrv_partition);
W_ERROR_HAVE_NO_MEMORY(p);
p->dn = talloc_steal(p, pdn);
DLIST_ADD(s->partitions, p);
DEBUG(2, ("dreplsrv_partition[%s] loaded\n", v));
}
talloc_free(r);
status = dreplsrv_refresh_partitions(s);
W_ERROR_NOT_OK_RETURN(status);
return WERR_OK;
}
static WERROR dreplsrv_out_connection_attach(struct dreplsrv_service *s,
const struct repsFromTo1 *rft,
struct dreplsrv_out_connection **_conn)
{
struct dreplsrv_out_connection *cur, *conn = NULL;
const char *hostname;
if (!rft->other_info) {
return WERR_FOOBAR;
}
if (!rft->other_info->dns_name) {
return WERR_FOOBAR;
}
hostname = rft->other_info->dns_name;
for (cur = s->connections; cur; cur = cur->next) {
if (strcmp(cur->binding->host, hostname) == 0) {
conn = cur;
break;
}
}
if (!conn) {
NTSTATUS nt_status;
char *binding_str;
conn = talloc_zero(s, struct dreplsrv_out_connection);
W_ERROR_HAVE_NO_MEMORY(conn);
conn->service = s;
binding_str = talloc_asprintf(conn, "ncacn_ip_tcp:%s[krb5,seal]",
hostname);
W_ERROR_HAVE_NO_MEMORY(binding_str);
nt_status = dcerpc_parse_binding(conn, binding_str, &conn->binding);
talloc_free(binding_str);
if (!NT_STATUS_IS_OK(nt_status)) {
return ntstatus_to_werror(nt_status);
}
DLIST_ADD_END(s->connections, conn, struct dreplsrv_out_connection *);
DEBUG(2,("dreplsrv_out_connection_attach(%s): create\n", conn->binding->host));
} else {
DEBUG(2,("dreplsrv_out_connection_attach(%s): attach\n", conn->binding->host));
}
*_conn = conn;
return WERR_OK;
}
static WERROR dreplsrv_partition_add_source_dsa(struct dreplsrv_service *s,
struct dreplsrv_partition *p,
const struct ldb_val *val)
{
WERROR status;
enum ndr_err_code ndr_err;
struct dreplsrv_partition_source_dsa *source;
source = talloc_zero(p, struct dreplsrv_partition_source_dsa);
W_ERROR_HAVE_NO_MEMORY(source);
ndr_err = ndr_pull_struct_blob(val, source,
lp_iconv_convenience(global_loadparm), &source->_repsFromBlob,
(ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
return ntstatus_to_werror(nt_status);
}
/* NDR_PRINT_DEBUG(repsFromToBlob, &source->_repsFromBlob); */
if (source->_repsFromBlob.version != 1) {
return WERR_DS_DRA_INTERNAL_ERROR;
}
source->partition = p;
source->repsFrom1 = &source->_repsFromBlob.ctr.ctr1;
status = dreplsrv_out_connection_attach(s, source->repsFrom1, &source->conn);
W_ERROR_NOT_OK_RETURN(status);
DLIST_ADD_END(p->sources, source, struct dreplsrv_partition_source_dsa *);
return WERR_OK;
}
static WERROR dreplsrv_refresh_partition(struct dreplsrv_service *s,
struct dreplsrv_partition *p,
TALLOC_CTX *mem_ctx)
{
WERROR status;
const struct ldb_val *ouv_value;
struct replUpToDateVectorBlob ouv;
struct dom_sid *nc_sid;
struct ldb_message_element *orf_el = NULL;
struct ldb_result *r;
uint32_t i;
int ret;
static const char *attrs[] = {
"objectSid",
"objectGUID",
"replUpToDateVector",
"repsFrom",
NULL
};
DEBUG(2, ("dreplsrv_refresh_partition(%s)\n",
ldb_dn_get_linearized(p->dn)));
ret = ldb_search(s->samdb, p->dn, LDB_SCOPE_BASE,
"(objectClass=*)", attrs, &r);
if (ret != LDB_SUCCESS) {
return WERR_FOOBAR;
} else if (r->count != 1) {
talloc_free(r);
return WERR_FOOBAR;
}
talloc_steal(mem_ctx, r);
ZERO_STRUCT(p->nc);
p->nc.dn = ldb_dn_alloc_linearized(p, p->dn);
W_ERROR_HAVE_NO_MEMORY(p->nc.dn);
p->nc.guid = samdb_result_guid(r->msgs[0], "objectGUID");
nc_sid = samdb_result_dom_sid(p, r->msgs[0], "objectSid");
if (nc_sid) {
p->nc.sid = *nc_sid;
}
ouv_value = ldb_msg_find_ldb_val(r->msgs[0], "replUpToDateVector");
if (ouv_value) {
enum ndr_err_code ndr_err;
ndr_err = ndr_pull_struct_blob(ouv_value, mem_ctx,
lp_iconv_convenience(global_loadparm), &ouv,
(ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS nt_status = ndr_map_error2ntstatus(ndr_err);
return ntstatus_to_werror(nt_status);
}
/* NDR_PRINT_DEBUG(replUpToDateVectorBlob, &ouv); */
if (ouv.version != 2) {
return WERR_DS_DRA_INTERNAL_ERROR;
}
p->uptodatevector.count = ouv.ctr.ctr2.count;
p->uptodatevector.reserved = ouv.ctr.ctr2.reserved;
p->uptodatevector.cursors = talloc_steal(p, ouv.ctr.ctr2.cursors);
}
/*
* TODO: add our own uptodatevector cursor
*/
orf_el = ldb_msg_find_element(r->msgs[0], "repsFrom");
if (orf_el) {
for (i=0; i < orf_el->num_values; i++) {
status = dreplsrv_partition_add_source_dsa(s, p, &orf_el->values[i]);
W_ERROR_NOT_OK_RETURN(status);
}
}
talloc_free(r);
return WERR_OK;
}
static WERROR dreplsrv_refresh_partitions(struct dreplsrv_service *s)
{
WERROR status;
struct dreplsrv_partition *p;
for (p = s->partitions; p; p = p->next) {
status = dreplsrv_refresh_partition(s, p, p);
W_ERROR_NOT_OK_RETURN(status);
}
return WERR_OK;
}
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