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/*
Unix SMB/CIFS implementation.
libndr interface
Copyright (C) Jelmer Vernooij 2006
Copyright (C) Volker Lendecke 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
struct cli_do_rpc_ndr_state {
const struct ndr_interface_call *call;
prs_struct q_ps, r_ps;
void *r;
};
static void cli_do_rpc_ndr_done(struct tevent_req *subreq);
struct tevent_req *cli_do_rpc_ndr_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct rpc_pipe_client *cli,
const struct ndr_interface_table *table,
uint32_t opnum,
void *r)
{
struct tevent_req *req, *subreq;
struct cli_do_rpc_ndr_state *state;
struct ndr_push *push;
DATA_BLOB blob;
enum ndr_err_code ndr_err;
bool ret;
req = tevent_req_create(mem_ctx, &state,
struct cli_do_rpc_ndr_state);
if (req == NULL) {
return NULL;
}
if (!ndr_syntax_id_equal(&table->syntax_id, &cli->abstract_syntax)
|| (opnum >= table->num_calls)) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
state->r = r;
state->call = &table->calls[opnum];
if (DEBUGLEVEL >= 10) {
ndr_print_function_debug(state->call->ndr_print,
state->call->name, NDR_IN, r);
}
push = ndr_push_init_ctx(talloc_tos(), NULL);
if (tevent_req_nomem(push, req)) {
return tevent_req_post(req, ev);
}
ndr_err = state->call->ndr_push(push, NDR_IN, r);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
tevent_req_nterror(req, ndr_map_error2ntstatus(ndr_err));
TALLOC_FREE(push);
return tevent_req_post(req, ev);
}
blob = ndr_push_blob(push);
ret = prs_init_data_blob(&state->q_ps, &blob, state);
TALLOC_FREE(push);
if (!ret) {
tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
return tevent_req_post(req, ev);
}
subreq = rpc_api_pipe_req_send(state, ev, cli, opnum, &state->q_ps);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, cli_do_rpc_ndr_done, req);
return req;
}
static void cli_do_rpc_ndr_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct cli_do_rpc_ndr_state *state = tevent_req_data(
req, struct cli_do_rpc_ndr_state);
NTSTATUS status;
status = rpc_api_pipe_req_recv(subreq, state, &state->r_ps);
TALLOC_FREE(subreq);
prs_mem_free(&state->q_ps);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
tevent_req_done(req);
}
NTSTATUS cli_do_rpc_ndr_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx)
{
struct cli_do_rpc_ndr_state *state = tevent_req_data(
req, struct cli_do_rpc_ndr_state);
struct ndr_pull *pull;
enum ndr_err_code ndr_err;
NTSTATUS status;
DATA_BLOB blob;
bool ret;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
ret = prs_data_blob(&state->r_ps, &blob, talloc_tos());
prs_mem_free(&state->r_ps);
if (!ret) {
return NT_STATUS_NO_MEMORY;
}
pull = ndr_pull_init_blob(&blob, mem_ctx, NULL);
if (pull == NULL) {
return NT_STATUS_NO_MEMORY;
}
/* have the ndr parser alloc memory for us */
pull->flags |= LIBNDR_FLAG_REF_ALLOC;
ndr_err = state->call->ndr_pull(pull, NDR_OUT, state->r);
TALLOC_FREE(pull);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
if (DEBUGLEVEL >= 10) {
ndr_print_function_debug(state->call->ndr_print,
state->call->name, NDR_OUT,
state->r);
}
} else {
return ndr_map_error2ntstatus(ndr_err);
}
return NT_STATUS_OK;
}
NTSTATUS cli_do_rpc_ndr(struct rpc_pipe_client *cli,
TALLOC_CTX *mem_ctx,
const struct ndr_interface_table *table,
uint32_t opnum, void *r)
{
TALLOC_CTX *frame = talloc_stackframe();
struct event_context *ev;
struct tevent_req *req;
NTSTATUS status = NT_STATUS_OK;
ev = event_context_init(frame);
if (ev == NULL) {
status = NT_STATUS_NO_MEMORY;
goto fail;
}
req = cli_do_rpc_ndr_send(frame, ev, cli, table, opnum, r);
if (req == NULL) {
status = NT_STATUS_NO_MEMORY;
goto fail;
}
if (!tevent_req_poll(req, ev)) {
status = map_nt_error_from_unix(errno);
goto fail;
}
status = cli_do_rpc_ndr_recv(req, mem_ctx);
/*
* NT_STATUS_IO_TIMEOUT indicates network problem,
* tear the connection apart.
*/
if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) {
if (cli->transport->transport == NCACN_IP_TCP ||
cli->transport->transport == NCALRPC) {
rpccli_close_sock_fd(cli);
}
if (cli->transport->transport == NCACN_NP) {
rpccli_close_np_fd(cli);
}
}
fail:
TALLOC_FREE(frame);
return status;
}
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