source/rpc_client/ndr.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    libndr interface
   5
   6    Copyright (C) Jelmer Vernooij 2006
   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
  25
  26 NTSTATUS cli_do_rpc_ndr(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx,
  27                         int p_idx, int opnum, void *data,
  28                         ndr_pull_flags_fn_t pull_fn, ndr_push_flags_fn_t push_fn)
  29 {
  30         prs_struct q_ps, r_ps;
  31         struct ndr_pull *pull;
  32         DATA_BLOB blob;
  33         struct ndr_push *push;
  34         NTSTATUS status;
  35
  36         SMB_ASSERT(cli->pipe_idx == p_idx);
  37
  38         push = ndr_push_init_ctx(mem_ctx);
  39         if (!push) {
  40                 return NT_STATUS_NO_MEMORY;
  41         }
  42
  43         status = push_fn(push, NDR_IN, data);
  44         if (!NT_STATUS_IS_OK(status)) {
  45                 return status;
  46         }
  47
  48         blob = ndr_push_blob(push);
  49
  50         if (!prs_init_data_blob(&q_ps, &blob, mem_ctx)) {
  51                 return NT_STATUS_NO_MEMORY;
  52         }
  53
  54         talloc_free(push);
  55
  56         if (!prs_init( &r_ps, 0, mem_ctx, UNMARSHALL )) {
  57                 prs_mem_free( &q_ps );
  58                 return NT_STATUS_NO_MEMORY;
  59         }
  60
  61         status = rpc_api_pipe_req(cli, opnum, &q_ps, &r_ps);
  62
  63         prs_mem_free( &q_ps );
  64
  65         if (!NT_STATUS_IS_OK(status)) {
  66                 prs_mem_free( &r_ps );
  67                 return status;
  68         }
  69
  70         if (!prs_data_blob(&r_ps, &blob, mem_ctx)) {
  71                 prs_mem_free( &r_ps );
  72                 return NT_STATUS_NO_MEMORY;
  73         }
  74
  75         prs_mem_free( &r_ps );
  76
  77         pull = ndr_pull_init_blob(&blob, mem_ctx);
  78         if (pull == NULL) {
  79                 return NT_STATUS_NO_MEMORY;
  80         }
  81
  82         /* have the ndr parser alloc memory for us */
  83         pull->flags |= LIBNDR_FLAG_REF_ALLOC;
  84         status = pull_fn(pull, NDR_OUT, data);
  85         talloc_free(pull);
  86
  87         if (!NT_STATUS_IS_OK(status)) {
  88                 return status;
  89         }
  90
  91         return NT_STATUS_OK;
  92 }