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 "librpc/ndr/ndr_table.h"
  24 #include "libcli/smb/smbXcli_base.h"
  25 #include "libcli/smb/tstream_smbXcli_np.h"
  26 #include "client.h"
  27
  28 #undef DBGC_CLASS
  29 #define DBGC_CLASS DBGC_RPC_CLI
  30
  31 struct rpc_transport_np_init_state {
  32         struct rpc_cli_transport *transport;
  33 };
  34
  35 static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq);
  36
  37 struct tevent_req *rpc_transport_np_init_send(TALLOC_CTX *mem_ctx,
  38                                               struct tevent_context *ev,
  39                                               struct cli_state *cli,
  40                                               const struct ndr_interface_table *table)
  41 {
  42         struct tevent_req *req;
  43         struct rpc_transport_np_init_state *state;
  44         const char *pipe_name;
  45         struct tevent_req *subreq;
  46         struct smbXcli_session *session;
  47         struct smbXcli_tcon *tcon;
  48         uint16_t pid = 0;
  49
  50         req = tevent_req_create(mem_ctx, &state,
  51                                 struct rpc_transport_np_init_state);
  52         if (req == NULL) {
  53                 return NULL;
  54         }
  55
  56         if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
  57                 tcon = cli->smb2.tcon;
  58                 session = cli->smb2.session;
  59         } else {
  60                 tcon = cli->smb1.tcon;
  61                 session = cli->smb1.session;
  62                 pid = cli->smb1.pid;
  63         }
  64
  65         pipe_name = dcerpc_default_transport_endpoint(mem_ctx, NCACN_NP, table);
  66         if (tevent_req_nomem(pipe_name, req)) {
  67                 return tevent_req_post(req, ev);
  68         }
  69
  70         while (pipe_name[0] == '\\') {
  71                 pipe_name++;
  72         }
  73
  74         subreq = tstream_smbXcli_np_open_send(state, ev, cli->conn,
  75                                               session, tcon, pid,
  76                                               cli->timeout, pipe_name);
  77         if (tevent_req_nomem(subreq, req)) {
  78                 return tevent_req_post(req, ev);
  79         }
  80         tevent_req_set_callback(subreq, rpc_transport_np_init_pipe_open, req);
  81
  82         return req;
  83 }
  84
  85 static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq)
  86 {
  87         struct tevent_req *req = tevent_req_callback_data(
  88                 subreq, struct tevent_req);
  89         struct rpc_transport_np_init_state *state = tevent_req_data(
  90                 req, struct rpc_transport_np_init_state);
  91         NTSTATUS status;
  92         struct tstream_context *stream;
  93
  94         status = tstream_smbXcli_np_open_recv(subreq, state, &stream);
  95         TALLOC_FREE(subreq);
  96         if (!NT_STATUS_IS_OK(status)) {
  97                 tevent_req_nterror(req, status);
  98                 return;
  99         }
 100
 101         status = rpc_transport_tstream_init(state,
 102                                             &stream,
 103                                             &state->transport);
 104         if (!NT_STATUS_IS_OK(status)) {
 105                 tevent_req_nterror(req, status);
 106                 return;
 107         }
 108
 109         tevent_req_done(req);
 110 }
 111
 112 NTSTATUS rpc_transport_np_init_recv(struct tevent_req *req,
 113                                     TALLOC_CTX *mem_ctx,
 114                                     struct rpc_cli_transport **presult)
 115 {
 116         struct rpc_transport_np_init_state *state = tevent_req_data(
 117                 req, struct rpc_transport_np_init_state);
 118         NTSTATUS status;
 119
 120         if (tevent_req_is_nterror(req, &status)) {
 121                 return status;
 122         }
 123
 124         *presult = talloc_move(mem_ctx, &state->transport);
 125         return NT_STATUS_OK;
 126 }
 127
 128 NTSTATUS rpc_transport_np_init(TALLOC_CTX *mem_ctx, struct cli_state *cli,
 129                                const struct ndr_interface_table *table,
 130                                struct rpc_cli_transport **presult)
 131 {
 132         TALLOC_CTX *frame = talloc_stackframe();
 133         struct tevent_context *ev;
 134         struct tevent_req *req;
 135         NTSTATUS status = NT_STATUS_OK;
 136
 137         ev = samba_tevent_context_init(frame);
 138         if (ev == NULL) {
 139                 status = NT_STATUS_NO_MEMORY;
 140                 goto fail;
 141         }
 142
 143         req = rpc_transport_np_init_send(frame, ev, cli, table);
 144         if (req == NULL) {
 145                 status = NT_STATUS_NO_MEMORY;
 146                 goto fail;
 147         }
 148
 149         if (!tevent_req_poll(req, ev)) {
 150                 status = map_nt_error_from_unix(errno);
 151                 goto fail;
 152         }
 153
 154         status = rpc_transport_np_init_recv(req, mem_ctx, presult);
 155  fail:
 156         TALLOC_FREE(frame);
 157         return status;
 158 }