source4/winbind/wb_cmd_getdcname.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Command backend for wbinfo --getdcname
   5
   6    Copyright (C) Volker Lendecke 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/composite/composite.h"
  25 #include "winbind/wb_server.h"
  26 #include "smbd/service_stream.h"
  27 #include "smbd/service_task.h"
  28
  29 #include "librpc/gen_ndr/ndr_netlogon.h"
  30
  31 static void composite_netr_GetAnyDCName_recv_rpc(struct rpc_request *req);
  32
  33 static struct composite_context *composite_netr_GetAnyDCName_send(struct dcerpc_pipe *p,
  34                                                                   TALLOC_CTX *mem_ctx,
  35                                                                   struct netr_GetAnyDCName *r)
  36 {
  37         struct composite_context *result;
  38         struct rpc_request *req;
  39
  40         result = talloc(mem_ctx, struct composite_context);
  41         if (result == NULL) goto failed;
  42         result->state = COMPOSITE_STATE_IN_PROGRESS;
  43         result->async.fn = NULL;
  44         result->event_ctx = p->conn->event_ctx;
  45
  46         req = dcerpc_netr_GetAnyDCName_send(p, mem_ctx, r);
  47         if (req == NULL) goto failed;
  48         req->async.callback = composite_netr_GetAnyDCName_recv_rpc;
  49         req->async.private = result;
  50         return result;
  51
  52  failed:
  53         talloc_free(result);
  54         return NULL;
  55 }
  56
  57 static void composite_netr_GetAnyDCName_recv_rpc(struct rpc_request *req)
  58 {
  59         struct composite_context *ctx =
  60                 talloc_get_type(req->async.private, struct composite_context);
  61
  62         ctx->status = dcerpc_ndr_request_recv(req);
  63         if (!composite_is_ok(ctx)) return;
  64         composite_done(ctx);
  65 }
  66
  67 static NTSTATUS composite_netr_GetAnyDCName_recv(struct composite_context *ctx)
  68 {
  69         NTSTATUS status = composite_wait(ctx);
  70         talloc_free(ctx);
  71         return status;
  72 }
  73
  74 struct cmd_getdcname_state {
  75         struct composite_context *ctx;
  76         const char *domain_name;
  77
  78         struct netr_GetAnyDCName g;
  79 };
  80
  81 static struct composite_context *getdcname_send_req(struct wbsrv_domain *domain,
  82                                                     void *p);
  83 static NTSTATUS getdcname_recv_req(struct composite_context *ctx, void *p);
  84
  85 struct composite_context *wb_cmd_getdcname_send(struct wbsrv_service *service,
  86                                                 struct wbsrv_domain *domain,
  87                                                 const char *domain_name)
  88 {
  89         struct cmd_getdcname_state *state;
  90
  91         state = talloc(NULL, struct cmd_getdcname_state);
  92         state->domain_name = talloc_strdup(state, domain_name);
  93         state->ctx = wb_domain_request_send(state, service,
  94                                             service->primary_sid,
  95                                             getdcname_send_req,
  96                                             getdcname_recv_req,
  97                                             state);
  98         if (state->ctx == NULL) {
  99                 talloc_free(state);
 100                 return NULL;
 101         }
 102         state->ctx->private_data = state;
 103         return state->ctx;
 104 }
 105
 106 static struct composite_context *getdcname_send_req(struct wbsrv_domain *domain, void *p)
 107 {
 108         struct cmd_getdcname_state *state =
 109                 talloc_get_type(p, struct cmd_getdcname_state);
 110
 111         state->g.in.logon_server = talloc_asprintf(
 112                 state, "\\\\%s",
 113                 dcerpc_server_name(domain->netlogon_pipe));
 114         state->g.in.domainname = state->domain_name;
 115
 116         return composite_netr_GetAnyDCName_send(domain->netlogon_pipe,
 117                                                 state, &state->g);
 118 }
 119
 120 static NTSTATUS getdcname_recv_req(struct composite_context *ctx, void *p)
 121 {
 122         struct cmd_getdcname_state *state =
 123                 talloc_get_type(p, struct cmd_getdcname_state);
 124         NTSTATUS status;
 125
 126         status = composite_netr_GetAnyDCName_recv(ctx);
 127         NT_STATUS_NOT_OK_RETURN(status);
 128
 129         if (!W_ERROR_IS_OK(state->g.out.result)) {
 130                 return werror_to_ntstatus(state->g.out.result);
 131         }
 132
 133         return NT_STATUS_OK;
 134 }
 135
 136 NTSTATUS wb_cmd_getdcname_recv(struct composite_context *c,
 137                                TALLOC_CTX *mem_ctx,
 138                                const char **dcname)
 139 {
 140         struct cmd_getdcname_state *state =
 141                 talloc_get_type(c->private_data, struct cmd_getdcname_state);
 142         NTSTATUS status = composite_wait(c);
 143         if (NT_STATUS_IS_OK(status)) {
 144                 const char *p = state->g.out.dcname;
 145                 if (*p == '\\') p += 1;
 146                 if (*p == '\\') p += 1;
 147                 *dcname = talloc_strdup(mem_ctx, p);
 148                 if (*dcname == NULL) {
 149                         status = NT_STATUS_NO_MEMORY;
 150                 }
 151         }
 152         talloc_free(state);
 153         return status;
 154 }