2 * Unix SMB/CIFS implementation.
3 * RPC client transport over named pipes
4 * Copyright (C) Volker Lendecke 2009
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.
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.
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/>.
21 #include "../lib/util/tevent_ntstatus.h"
22 #include "librpc/rpc/dcerpc_util.h"
23 #include "rpc_client/rpc_transport.h"
24 #include "librpc/ndr/ndr_table.h"
25 #include "libcli/smb/smbXcli_base.h"
26 #include "libcli/smb/tstream_smbXcli_np.h"
30 #define DBGC_CLASS DBGC_RPC_CLI
32 struct rpc_transport_np_init_state {
33 struct rpc_cli_transport *transport;
35 struct tevent_context *ev;
36 struct smbXcli_conn *conn;
38 struct timeval abs_timeout;
39 const char *pipe_name;
40 struct smbXcli_session *session;
41 struct smbXcli_tcon *tcon;
45 static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq);
47 struct tevent_req *rpc_transport_np_init_send(TALLOC_CTX *mem_ctx,
48 struct tevent_context *ev,
49 struct cli_state *cli,
50 const struct ndr_interface_table *table)
52 struct tevent_req *req;
53 struct rpc_transport_np_init_state *state;
54 struct tevent_req *subreq;
56 req = tevent_req_create(mem_ctx, &state,
57 struct rpc_transport_np_init_state);
62 if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
63 state->tcon = cli->smb2.tcon;
64 state->session = cli->smb2.session;
66 state->tcon = cli->smb1.tcon;
67 state->session = cli->smb1.session;
68 state->pid = cli->smb1.pid;
72 state->conn = cli->conn;
73 state->timeout = cli->timeout;
74 state->abs_timeout = timeval_current_ofs_msec(cli->timeout);
75 state->pipe_name = dcerpc_default_transport_endpoint(state, NCACN_NP,
77 if (tevent_req_nomem(state->pipe_name, req)) {
78 return tevent_req_post(req, ev);
81 while (state->pipe_name[0] == '\\') {
85 subreq = tstream_smbXcli_np_open_send(state, ev, state->conn,
86 state->session, state->tcon,
87 state->pid, state->timeout,
89 if (tevent_req_nomem(subreq, req)) {
90 return tevent_req_post(req, ev);
92 tevent_req_set_callback(subreq, rpc_transport_np_init_pipe_open, req);
97 static void rpc_transport_np_init_pipe_open_retry(struct tevent_context *ev,
98 struct tevent_timer *te,
102 struct tevent_req *subreq;
103 struct tevent_req *req = talloc_get_type(priv_data, struct tevent_req);
104 struct rpc_transport_np_init_state *state = tevent_req_data(
105 req, struct rpc_transport_np_init_state);
107 subreq = tstream_smbXcli_np_open_send(state, ev,
114 if (tevent_req_nomem(subreq, req)) {
117 tevent_req_set_callback(subreq, rpc_transport_np_init_pipe_open, req);
121 static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq)
123 struct tevent_req *req = tevent_req_callback_data(
124 subreq, struct tevent_req);
125 struct rpc_transport_np_init_state *state = tevent_req_data(
126 req, struct rpc_transport_np_init_state);
128 struct tstream_context *stream;
130 status = tstream_smbXcli_np_open_recv(subreq, state, &stream);
132 if (NT_STATUS_EQUAL(status, NT_STATUS_PIPE_NOT_AVAILABLE)
133 && (!timeval_expired(&state->abs_timeout))) {
134 struct tevent_timer *te;
136 * Retry on STATUS_PIPE_NOT_AVAILABLE, Windows starts some
137 * servers (FssagentRpc) on demand.
139 DEBUG(2, ("RPC pipe %s not available, retry %d\n",
140 state->pipe_name, state->retries));
141 te = tevent_add_timer(state->ev, state,
142 timeval_current_ofs_msec(100 * state->retries),
143 rpc_transport_np_init_pipe_open_retry, req);
144 if (tevent_req_nomem(te, req)) {
145 DEBUG(2, ("Failed to create asynchronous "
151 if (tevent_req_nterror(req, status)) {
155 status = rpc_transport_tstream_init(state,
158 if (tevent_req_nterror(req, status)) {
162 tevent_req_done(req);
165 NTSTATUS rpc_transport_np_init_recv(struct tevent_req *req,
167 struct rpc_cli_transport **presult)
169 struct rpc_transport_np_init_state *state = tevent_req_data(
170 req, struct rpc_transport_np_init_state);
173 if (tevent_req_is_nterror(req, &status)) {
177 *presult = talloc_move(mem_ctx, &state->transport);
181 NTSTATUS rpc_transport_np_init(TALLOC_CTX *mem_ctx, struct cli_state *cli,
182 const struct ndr_interface_table *table,
183 struct rpc_cli_transport **presult)
185 TALLOC_CTX *frame = talloc_stackframe();
186 struct tevent_context *ev;
187 struct tevent_req *req;
188 NTSTATUS status = NT_STATUS_OK;
190 ev = samba_tevent_context_init(frame);
192 status = NT_STATUS_NO_MEMORY;
196 req = rpc_transport_np_init_send(frame, ev, cli, table);
198 status = NT_STATUS_NO_MEMORY;
202 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
206 status = rpc_transport_np_init_recv(req, mem_ctx, presult);