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/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-1998,
* Largely re-written : 2005
* Copyright (C) Jeremy Allison 1998 - 2005
* Copyright (C) Simo Sorce 2010
* Copyright (C) Andrew Bartlett 2011
*
* 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"
#include "rpc_client/cli_pipe.h"
#include "rpc_dce.h"
#include "../libcli/named_pipe_auth/npa_tstream.h"
#include "rpc_server/rpc_ncacn_np.h"
#include "librpc/gen_ndr/netlogon.h"
#include "librpc/gen_ndr/auth.h"
#include "../auth/auth_sam_reply.h"
#include "../auth/auth_util.h"
#include "auth.h"
#include "rpc_server/rpc_pipes.h"
#include "../lib/tsocket/tsocket.h"
#include "../lib/util/tevent_ntstatus.h"
#include "rpc_server/rpc_config.h"
#include "librpc/ndr/ndr_table.h"
#include "rpc_server/rpc_server.h"
#include "librpc/rpc/dcerpc_util.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
struct np_proxy_state {
uint16_t file_type;
uint16_t device_state;
uint64_t allocation_size;
struct tstream_context *npipe;
struct tevent_queue *read_queue;
struct tevent_queue *write_queue;
};
struct npa_state *npa_state_init(TALLOC_CTX *mem_ctx)
{
struct npa_state *npa;
npa = talloc_zero(mem_ctx, struct npa_state);
if (npa == NULL) {
return NULL;
}
npa->read_queue = tevent_queue_create(npa, "npa_cli_read");
if (npa->read_queue == NULL) {
DEBUG(0, ("tevent_queue_create failed\n"));
goto fail;
}
npa->write_queue = tevent_queue_create(npa, "npa_cli_write");
if (npa->write_queue == NULL) {
DEBUG(0, ("tevent_queue_create failed\n"));
goto fail;
}
return npa;
fail:
talloc_free(npa);
return NULL;
}
/**
* @brief Create a new DCERPC Binding Handle which uses a local dispatch function.
*
* @param[in] mem_ctx The memory context to use.
*
* @param[in] ndr_table Normally the ndr_table_<name>.
*
* @param[in] remote_address The info about the connected client.
*
* @param[in] serversupplied_info The server supplied authentication function.
*
* @param[in] msg_ctx The messaging context that can be used by the server
*
* @param[out] binding_handle A pointer to store the connected
* dcerpc_binding_handle
*
* @return NT_STATUS_OK on success, a corresponding NT status if an
* error occurred.
*
* @code
* struct dcerpc_binding_handle *winreg_binding;
* NTSTATUS status;
*
* status = rpcint_binding_handle(tmp_ctx,
* &ndr_table_winreg,
* p->remote_address,
* p->session_info,
* p->msg_ctx
* &winreg_binding);
* @endcode
*/
NTSTATUS rpcint_binding_handle(TALLOC_CTX *mem_ctx,
const struct ndr_interface_table *ndr_table,
const struct tsocket_address *remote_address,
const struct tsocket_address *local_address,
const struct auth_session_info *session_info,
struct messaging_context *msg_ctx,
struct dcerpc_binding_handle **binding_handle)
{
struct rpc_pipe_client *rpccli = NULL;
NTSTATUS status;
status = rpc_pipe_open_local_np(
mem_ctx,
ndr_table,
NULL,
remote_address,
NULL,
local_address,
session_info,
&rpccli);
if (!NT_STATUS_IS_OK(status)) {
DBG_DEBUG("rpc_pipe_open_local_np failed: %s\n",
nt_errstr(status));
goto fail;
}
*binding_handle = rpccli->binding_handle;
return NT_STATUS_OK;
fail:
TALLOC_FREE(rpccli);
return status;
}
/**
* @brief Create a new RPC client context which uses a local dispatch function
* or a remote transport, depending on rpc_server configuration for the
* specific service.
*
* @param[in] mem_ctx The memory context to use.
*
* @param[in] abstract_syntax Normally the syntax_id of the autogenerated
* ndr_table_<name>.
*
* @param[in] serversupplied_info The server supplied authentication function.
*
* @param[in] remote_address The client address information.
*
* @param[in] msg_ctx The messaging context to use.
*
* @param[out] presult A pointer to store the connected rpc client pipe.
*
* @return NT_STATUS_OK on success, a corresponding NT status if an
* error occurred.
*
* @code
* struct rpc_pipe_client *winreg_pipe;
* NTSTATUS status;
*
* status = rpc_pipe_open_interface(tmp_ctx,
* &ndr_table_winreg.syntax_id,
* p->session_info,
* remote_address,
* &winreg_pipe);
* @endcode
*/
NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
const struct ndr_interface_table *table,
const struct auth_session_info *session_info,
const struct tsocket_address *remote_address,
const struct tsocket_address *local_address,
struct messaging_context *msg_ctx,
struct rpc_pipe_client **cli_pipe)
{
struct rpc_pipe_client *cli = NULL;
NTSTATUS status;
if (cli_pipe != NULL) {
if (rpccli_is_connected(*cli_pipe)) {
return NT_STATUS_OK;
} else {
TALLOC_FREE(*cli_pipe);
}
}
status = rpc_pipe_open_local_np(
mem_ctx,
table,
NULL,
remote_address,
NULL,
local_address,
session_info,
&cli);
if (!NT_STATUS_IS_OK(status)) {
DBG_ERR("Could not connect to %s pipe: %s\n",
table->name,
nt_errstr(status));
return status;
}
if (NT_STATUS_IS_OK(status) && cli_pipe != NULL) {
*cli_pipe = cli;
}
return status;
}
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