source3/rpc_client/rpc_transport_np.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC client transport over named pipes
   4  *  Copyright (C) Volker Lendecke 2009
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "includes.h"
  21 #include "../lib/util/tevent_ntstatus.h"
  22 #include "rpc_client/rpc_transport.h"
  23 #include "libsmb/cli_np_tstream.h"
  24 #include "librpc/ndr/ndr_table.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_RPC_CLI
  28
  29 struct rpc_transport_np_init_state {
  30         struct rpc_cli_transport *transport;
  31 };
  32
  33 static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq);
  34
  35 struct tevent_req *rpc_transport_np_init_send(TALLOC_CTX *mem_ctx,
  36                                               struct tevent_context *ev,
  37                                               struct cli_state *cli,
  38                                               const struct ndr_interface_table *table)
  39 {
  40         struct tevent_req *req;
  41         struct rpc_transport_np_init_state *state;
  42         const char *pipe_name;
  43         struct tevent_req *subreq;
  44
  45         req = tevent_req_create(mem_ctx, &state,
  46                                 struct rpc_transport_np_init_state);
  47         if (req == NULL) {
  48                 return NULL;
  49         }
  50
  51         pipe_name = dcerpc_default_transport_endpoint(mem_ctx, NCACN_NP, table);
  52         if (tevent_req_nomem(pipe_name, req)) {
  53                 return tevent_req_post(req, ev);
  54         }
  55
  56         while (pipe_name[0] == '\\') {
  57                 pipe_name++;
  58         }
  59
  60         subreq = tstream_cli_np_open_send(state, ev, cli, pipe_name);
  61         if (tevent_req_nomem(subreq, req)) {
  62                 return tevent_req_post(req, ev);
  63         }
  64         tevent_req_set_callback(subreq, rpc_transport_np_init_pipe_open, req);
  65
  66         return req;
  67 }
  68
  69 static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq)
  70 {
  71         struct tevent_req *req = tevent_req_callback_data(
  72                 subreq, struct tevent_req);
  73         struct rpc_transport_np_init_state *state = tevent_req_data(
  74                 req, struct rpc_transport_np_init_state);
  75         NTSTATUS status;
  76         struct tstream_context *stream;
  77
  78         status = tstream_cli_np_open_recv(subreq, state, &stream);
  79         TALLOC_FREE(subreq);
  80         if (!NT_STATUS_IS_OK(status)) {
  81                 tevent_req_nterror(req, status);
  82                 return;
  83         }
  84
  85         status = rpc_transport_tstream_init(state,
  86                                             &stream,
  87                                             &state->transport);
  88         if (!NT_STATUS_IS_OK(status)) {
  89                 tevent_req_nterror(req, status);
  90                 return;
  91         }
  92
  93         tevent_req_done(req);
  94 }
  95
  96 NTSTATUS rpc_transport_np_init_recv(struct tevent_req *req,
  97                                     TALLOC_CTX *mem_ctx,
  98                                     struct rpc_cli_transport **presult)
  99 {
 100         struct rpc_transport_np_init_state *state = tevent_req_data(
 101                 req, struct rpc_transport_np_init_state);
 102         NTSTATUS status;
 103
 104         if (tevent_req_is_nterror(req, &status)) {
 105                 return status;
 106         }
 107
 108         *presult = talloc_move(mem_ctx, &state->transport);
 109         return NT_STATUS_OK;
 110 }
 111
 112 NTSTATUS rpc_transport_np_init(TALLOC_CTX *mem_ctx, struct cli_state *cli,
 113                                const struct ndr_interface_table *table,
 114                                struct rpc_cli_transport **presult)
 115 {
 116         TALLOC_CTX *frame = talloc_stackframe();
 117         struct tevent_context *ev;
 118         struct tevent_req *req;
 119         NTSTATUS status = NT_STATUS_OK;
 120
 121         ev = samba_tevent_context_init(frame);
 122         if (ev == NULL) {
 123                 status = NT_STATUS_NO_MEMORY;
 124                 goto fail;
 125         }
 126
 127         req = rpc_transport_np_init_send(frame, ev, cli, table);
 128         if (req == NULL) {
 129                 status = NT_STATUS_NO_MEMORY;
 130                 goto fail;
 131         }
 132
 133         if (!tevent_req_poll(req, ev)) {
 134                 status = map_nt_error_from_unix(errno);
 135                 goto fail;
 136         }
 137
 138         status = rpc_transport_np_init_recv(req, mem_ctx, presult);
 139  fail:
 140         TALLOC_FREE(frame);
 141         return status;
 142 }