source3/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 3 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, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23
  24
  25 NTSTATUS cli_do_rpc_ndr(struct rpc_pipe_client *cli,
  26                         TALLOC_CTX *mem_ctx,
  27                         const struct ndr_interface_table *table,
  28                         uint32 opnum, void *r)
  29 {
  30         prs_struct q_ps, r_ps;
  31         const struct ndr_interface_call *call;
  32         struct ndr_pull *pull;
  33         DATA_BLOB blob;
  34         struct ndr_push *push;
  35         NTSTATUS status;
  36         enum ndr_err_code ndr_err;
  37
  38         SMB_ASSERT(ndr_syntax_id_equal(&table->syntax_id,
  39                                        &cli->abstract_syntax));
  40         SMB_ASSERT(table->num_calls > opnum);
  41
  42         call = &table->calls[opnum];
  43
  44         push = ndr_push_init_ctx(mem_ctx);
  45         if (!push) {
  46                 return NT_STATUS_NO_MEMORY;
  47         }
  48
  49         ndr_err = call->ndr_push(push, NDR_IN, r);
  50         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  51                 return ndr_map_error2ntstatus(ndr_err);
  52         }
  53
  54         blob = ndr_push_blob(push);
  55
  56         if (!prs_init_data_blob(&q_ps, &blob, mem_ctx)) {
  57                 return NT_STATUS_NO_MEMORY;
  58         }
  59
  60         talloc_free(push);
  61
  62         prs_init_empty( &r_ps, mem_ctx, UNMARSHALL );
  63
  64         status = rpc_api_pipe_req(cli, opnum, &q_ps, &r_ps);
  65
  66         prs_mem_free( &q_ps );
  67
  68         if (!NT_STATUS_IS_OK(status)) {
  69                 prs_mem_free( &r_ps );
  70                 return status;
  71         }
  72
  73         if (!prs_data_blob(&r_ps, &blob, mem_ctx)) {
  74                 prs_mem_free( &r_ps );
  75                 return NT_STATUS_NO_MEMORY;
  76         }
  77
  78         prs_mem_free( &r_ps );
  79
  80         pull = ndr_pull_init_blob(&blob, mem_ctx);
  81         if (pull == NULL) {
  82                 return NT_STATUS_NO_MEMORY;
  83         }
  84
  85         /* have the ndr parser alloc memory for us */
  86         pull->flags |= LIBNDR_FLAG_REF_ALLOC;
  87         ndr_err = call->ndr_pull(pull, NDR_OUT, r);
  88         talloc_free(pull);
  89
  90         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  91                 return ndr_map_error2ntstatus(ndr_err);
  92         }
  93
  94         return NT_STATUS_OK;
  95 }