mirror of
https://github.com/samba-team/samba.git
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ee61568be6
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
245 lines
7.6 KiB
C
245 lines
7.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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Get a struct wb_dom_info for a trusted domain, relying on "our" DC.
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Copyright (C) Volker Lendecke 2005
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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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*/
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#include "includes.h"
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#include "libcli/composite/composite.h"
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#include "libcli/resolve/resolve.h"
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#include "libcli/security/security.h"
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#include "winbind/wb_server.h"
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#include "smbd/service_task.h"
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#include "librpc/gen_ndr/ndr_netlogon_c.h"
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#include "libcli/libcli.h"
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struct trusted_dom_info_state {
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struct composite_context *ctx;
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struct wbsrv_service *service;
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struct wbsrv_domain *my_domain;
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struct netr_DsRGetDCName d;
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struct netr_GetAnyDCName g;
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struct wb_dom_info *info;
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};
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static void trusted_dom_info_recv_domain(struct composite_context *ctx);
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static void trusted_dom_info_recv_dsr(struct tevent_req *subreq);
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static void trusted_dom_info_recv_dcname(struct tevent_req *subreq);
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static void trusted_dom_info_recv_dcaddr(struct composite_context *ctx);
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struct composite_context *wb_trusted_dom_info_send(TALLOC_CTX *mem_ctx,
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struct wbsrv_service *service,
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const char *domain_name,
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const struct dom_sid *sid)
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{
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struct composite_context *result, *ctx;
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struct trusted_dom_info_state *state;
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result = composite_create(mem_ctx, service->task->event_ctx);
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if (result == NULL) goto failed;
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state = talloc(result, struct trusted_dom_info_state);
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if (state == NULL) goto failed;
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state->ctx = result;
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result->private_data = state;
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state->info = talloc_zero(state, struct wb_dom_info);
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if (state->info == NULL) goto failed;
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state->service = service;
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state->info->sid = dom_sid_dup(state->info, sid);
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if (state->info->sid == NULL) goto failed;
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state->info->name = talloc_strdup(state->info, domain_name);
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if (state->info->name == NULL) goto failed;
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ctx = wb_sid2domain_send(state, service, service->primary_sid);
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if (ctx == NULL) goto failed;
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ctx->async.fn = trusted_dom_info_recv_domain;
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ctx->async.private_data = state;
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return result;
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failed:
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talloc_free(result);
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return NULL;
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}
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static void trusted_dom_info_recv_domain(struct composite_context *ctx)
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{
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struct trusted_dom_info_state *state =
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talloc_get_type(ctx->async.private_data,
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struct trusted_dom_info_state);
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struct tevent_req *subreq;
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state->ctx->status = wb_sid2domain_recv(ctx, &state->my_domain);
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if (!composite_is_ok(state->ctx)) return;
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state->d.in.server_unc =
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talloc_asprintf(state, "\\\\%s",
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dcerpc_server_name(state->my_domain->netlogon_pipe));
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if (composite_nomem(state->d.in.server_unc,
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state->ctx)) return;
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state->d.in.domain_name = state->info->name;
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state->d.in.domain_guid = NULL;
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state->d.in.site_guid = NULL;
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state->d.in.flags = DS_RETURN_DNS_NAME;
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state->d.out.info = talloc(state, struct netr_DsRGetDCNameInfo *);
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if (composite_nomem(state->d.out.info, state->ctx)) return;
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subreq = dcerpc_netr_DsRGetDCName_r_send(state,
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state->ctx->event_ctx,
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state->my_domain->netlogon_pipe->binding_handle,
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&state->d);
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if (composite_nomem(subreq, state->ctx)) return;
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tevent_req_set_callback(subreq, trusted_dom_info_recv_dsr, state);
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}
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/*
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* dcerpc_netr_DsRGetDCName has replied
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*/
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static void trusted_dom_info_recv_dsr(struct tevent_req *subreq)
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{
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struct trusted_dom_info_state *state =
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tevent_req_callback_data(subreq,
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struct trusted_dom_info_state);
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state->ctx->status = dcerpc_netr_DsRGetDCName_r_recv(subreq, state);
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(state->ctx->status)) {
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DEBUG(9, ("dcerpc_netr_DsRGetDCName_recv returned %s\n",
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nt_errstr(state->ctx->status)));
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goto fallback;
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}
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state->ctx->status =
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werror_to_ntstatus(state->d.out.result);
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if (!NT_STATUS_IS_OK(state->ctx->status)) {
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DEBUG(9, ("dsrgetdcname returned %s\n",
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nt_errstr(state->ctx->status)));
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goto fallback;
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}
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/* Hey, that was easy! */
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state->info->dc = talloc(state->info, struct nbt_dc_name);
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state->info->dc->name = talloc_steal(state->info,
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(*state->d.out.info)->dc_unc);
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if (*state->info->dc->name == '\\') state->info->dc->name++;
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if (*state->info->dc->name == '\\') state->info->dc->name++;
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state->info->dc->address = talloc_steal(state->info,
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(*state->d.out.info)->dc_address);
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if (*state->info->dc->address == '\\') state->info->dc->address++;
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if (*state->info->dc->address == '\\') state->info->dc->address++;
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state->info->dns_name = talloc_steal(state->info,
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(*state->d.out.info)->domain_name);
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composite_done(state->ctx);
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return;
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fallback:
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state->g.in.logon_server = talloc_asprintf(
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state, "\\\\%s",
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dcerpc_server_name(state->my_domain->netlogon_pipe));
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state->g.in.domainname = state->info->name;
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state->g.out.dcname = talloc(state, const char *);
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subreq = dcerpc_netr_GetAnyDCName_r_send(state,
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state->ctx->event_ctx,
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state->my_domain->netlogon_pipe->binding_handle,
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&state->g);
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if (composite_nomem(subreq, state->ctx)) return;
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tevent_req_set_callback(subreq, trusted_dom_info_recv_dcname, state);
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}
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static void trusted_dom_info_recv_dcname(struct tevent_req *subreq)
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{
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struct trusted_dom_info_state *state =
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tevent_req_callback_data(subreq,
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struct trusted_dom_info_state);
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struct composite_context *ctx;
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struct nbt_name name;
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state->ctx->status = dcerpc_netr_GetAnyDCName_r_recv(subreq, state);
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TALLOC_FREE(subreq);
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if (!composite_is_ok(state->ctx)) return;
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state->ctx->status = werror_to_ntstatus(state->g.out.result);
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if (!composite_is_ok(state->ctx)) return;
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/* Hey, that was easy! */
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state->info->dc = talloc(state->info, struct nbt_dc_name);
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state->info->dc->name = talloc_steal(state->info,
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*(state->g.out.dcname));
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if (*state->info->dc->name == '\\') state->info->dc->name++;
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if (*state->info->dc->name == '\\') state->info->dc->name++;
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make_nbt_name(&name, state->info->dc->name, 0x20);
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ctx = resolve_name_send(lpcfg_resolve_context(state->service->task->lp_ctx), state,
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&name, state->service->task->event_ctx);
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composite_continue(state->ctx, ctx, trusted_dom_info_recv_dcaddr,
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state);
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}
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static void trusted_dom_info_recv_dcaddr(struct composite_context *ctx)
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{
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struct trusted_dom_info_state *state =
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talloc_get_type(ctx->async.private_data,
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struct trusted_dom_info_state);
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state->ctx->status = resolve_name_recv(ctx, state->info,
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&state->info->dc->address);
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if (!composite_is_ok(state->ctx)) return;
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composite_done(state->ctx);
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}
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NTSTATUS wb_trusted_dom_info_recv(struct composite_context *ctx,
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TALLOC_CTX *mem_ctx,
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struct wb_dom_info **result)
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{
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NTSTATUS status = composite_wait(ctx);
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if (NT_STATUS_IS_OK(status)) {
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struct trusted_dom_info_state *state =
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talloc_get_type(ctx->private_data,
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struct trusted_dom_info_state);
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*result = talloc_steal(mem_ctx, state->info);
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}
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talloc_free(ctx);
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return status;
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}
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NTSTATUS wb_trusted_dom_info(TALLOC_CTX *mem_ctx,
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struct wbsrv_service *service,
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const char *domain_name,
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const struct dom_sid *sid,
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struct wb_dom_info **result)
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{
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struct composite_context *ctx =
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wb_trusted_dom_info_send(mem_ctx, service, domain_name, sid);
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return wb_trusted_dom_info_recv(ctx, mem_ctx, result);
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}
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