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Unix SMB/CIFS implementation.
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Do a netr_DsrUpdateReadOnlyServerDnsRecords to a remote DC
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Copyright (C) Andrew Bartlett 2010
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Copyright (C) Andrew Tridgell 2010
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based heavily on wb_sam_logon.c which is copyright:
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Copyright (C) Volker Lendecke 2005
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Copyright (C) Andrew Bartlett 2005
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Copyright (C) Stefan Metzmacher 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "libcli/composite/composite.h"
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#include "winbind/wb_server.h"
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#include "smbd/service_task.h"
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#include "auth/credentials/credentials.h"
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#include "libcli/auth/libcli_auth.h"
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#include "librpc/gen_ndr/ndr_netlogon_c.h"
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#include "librpc/gen_ndr/winbind.h"
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struct wb_update_rodc_dns_state {
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struct composite_context *ctx;
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struct winbind_DsrUpdateReadOnlyServerDnsRecords *req;
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struct netlogon_creds_CredentialState *creds_state;
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struct netr_Authenticator auth1, auth2;
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TALLOC_CTX *r_mem_ctx;
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struct netr_DsrUpdateReadOnlyServerDnsRecords r;
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static void wb_update_rodc_dns_recv_domain(struct composite_context *ctx);
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static void wb_update_rodc_dns_recv_response(struct tevent_req *subreq);
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Find the connection to the DC (or find an existing connection)
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struct composite_context *wb_update_rodc_dns_send(TALLOC_CTX *mem_ctx,
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struct wbsrv_service *service,
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struct winbind_DsrUpdateReadOnlyServerDnsRecords *req)
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struct composite_context *c, *creq;
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struct wb_update_rodc_dns_state *s;
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c = composite_create(mem_ctx, service->task->event_ctx);
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s = talloc_zero(c, struct wb_update_rodc_dns_state);
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if (composite_nomem(s, c)) return c;
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creq = wb_sid2domain_send(s, service, service->primary_sid);
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composite_continue(c, creq, wb_update_rodc_dns_recv_domain, s);
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Having finished making the connection to the DC
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Send of a DsrUpdateReadOnlyServerDnsRecords request to authenticate a user.
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static void wb_update_rodc_dns_recv_domain(struct composite_context *creq)
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struct wb_update_rodc_dns_state *s = talloc_get_type(creq->async.private_data,
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struct wb_update_rodc_dns_state);
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struct wbsrv_domain *domain;
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struct tevent_req *subreq;
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s->ctx->status = wb_sid2domain_recv(creq, &domain);
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if (!composite_is_ok(s->ctx)) return;
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s->creds_state = cli_credentials_get_netlogon_creds(domain->libnet_ctx->cred);
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netlogon_creds_client_authenticator(s->creds_state, &s->auth1);
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s->r.in.server_name = talloc_asprintf(s, "\\\\%s",
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dcerpc_server_name(domain->netlogon_pipe));
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if (composite_nomem(s->r.in.server_name, s->ctx)) return;
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s->r.in.computer_name = cli_credentials_get_workstation(domain->libnet_ctx->cred);
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s->r.in.credential = &s->auth1;
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s->r.out.return_authenticator = &s->auth2;
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s->r.in.site_name = s->req->in.site_name;
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s->r.in.dns_ttl = s->req->in.dns_ttl;
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s->r.in.dns_names = s->req->in.dns_names;
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s->r.out.dns_names = s->req->in.dns_names;
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* use a new talloc context for the DsrUpdateReadOnlyServerDnsRecords call
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* because then we can just to a talloc_steal on this context
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* in the final _recv() function to give the caller all the content of
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* the s->r.out.dns_names
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s->r_mem_ctx = talloc_new(s);
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if (composite_nomem(s->r_mem_ctx, s->ctx)) return;
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subreq = dcerpc_netr_DsrUpdateReadOnlyServerDnsRecords_r_send(s,
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domain->netlogon_pipe->binding_handle,
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if (composite_nomem(subreq, s->ctx)) return;
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tevent_req_set_callback(subreq, wb_update_rodc_dns_recv_response, s);
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Check the DsrUpdateReadOnlyServerDnsRecords reply and decrypt the session keys
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static void wb_update_rodc_dns_recv_response(struct tevent_req *subreq)
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struct wb_update_rodc_dns_state *s = tevent_req_callback_data(subreq,
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struct wb_update_rodc_dns_state);
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s->ctx->status = dcerpc_netr_DsrUpdateReadOnlyServerDnsRecords_r_recv(subreq, s->r_mem_ctx);
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if (!composite_is_ok(s->ctx)) return;
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s->ctx->status = s->r.out.result;
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if (!composite_is_ok(s->ctx)) return;
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if ((s->r.out.return_authenticator == NULL) ||
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(!netlogon_creds_client_check(s->creds_state,
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&s->r.out.return_authenticator->cred))) {
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DEBUG(0, ("Credentials check failed!\n"));
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composite_error(s->ctx, NT_STATUS_ACCESS_DENIED);
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composite_done(s->ctx);
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NTSTATUS wb_update_rodc_dns_recv(struct composite_context *c,
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struct winbind_DsrUpdateReadOnlyServerDnsRecords *req)
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struct wb_update_rodc_dns_state *s = talloc_get_type(c->private_data,
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struct wb_update_rodc_dns_state);
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NTSTATUS status = composite_wait(c);
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if (NT_STATUS_IS_OK(status)) {
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talloc_steal(mem_ctx, s->r_mem_ctx);
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req->out.dns_names = s->r.out.dns_names;