mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
a396b705c8
Instead of ‘int’ or ‘uint32_t’, neither of which convey much meaning, consistently use a newly added type to hold NDR_ flags. Update the NDR 4.0.0 ABI. Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
3678 lines
94 KiB
C
3678 lines
94 KiB
C
/*
|
|
* Unix SMB/CIFS implementation.
|
|
* RPC Pipe client routines
|
|
* Largely rewritten by Jeremy Allison 2005.
|
|
* Heavily modified by Simo Sorce 2010.
|
|
* Copyright 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 "libsmb/namequery.h"
|
|
#include "../lib/util/tevent_ntstatus.h"
|
|
#include "librpc/gen_ndr/ndr_epmapper_c.h"
|
|
#include "../librpc/gen_ndr/ndr_dssetup.h"
|
|
#include "../libcli/auth/schannel.h"
|
|
#include "../libcli/auth/netlogon_creds_cli.h"
|
|
#include "auth_generic.h"
|
|
#include "librpc/gen_ndr/ndr_dcerpc.h"
|
|
#include "librpc/gen_ndr/ndr_netlogon_c.h"
|
|
#include "librpc/gen_ndr/auth.h"
|
|
#include "librpc/rpc/dcerpc.h"
|
|
#include "librpc/rpc/dcerpc_util.h"
|
|
#include "rpc_dce.h"
|
|
#include "cli_pipe.h"
|
|
#include "libsmb/libsmb.h"
|
|
#include "auth/gensec/gensec.h"
|
|
#include "auth/credentials/credentials.h"
|
|
#include "auth/auth_util.h"
|
|
#include "../libcli/smb/smbXcli_base.h"
|
|
#include "lib/tsocket/tsocket.h"
|
|
#include "libcli/named_pipe_auth/npa_tstream.h"
|
|
#include "librpc/gen_ndr/ndr_winreg.h"
|
|
#include "local_np.h"
|
|
|
|
#undef DBGC_CLASS
|
|
#define DBGC_CLASS DBGC_RPC_CLI
|
|
|
|
/********************************************************************
|
|
Pipe description for a DEBUG
|
|
********************************************************************/
|
|
static const char *rpccli_pipe_txt(TALLOC_CTX *mem_ctx,
|
|
struct rpc_pipe_client *cli)
|
|
{
|
|
char *result = talloc_asprintf(mem_ctx, "host %s", cli->desthost);
|
|
if (result == NULL) {
|
|
return "pipe";
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/********************************************************************
|
|
Rpc pipe call id.
|
|
********************************************************************/
|
|
|
|
static uint32_t get_rpc_call_id(void)
|
|
{
|
|
static uint32_t call_id = 0;
|
|
return ++call_id;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Use SMBreadX to get rest of one fragment's worth of rpc data.
|
|
Reads the whole size or give an error message
|
|
********************************************************************/
|
|
|
|
struct rpc_read_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_cli_transport *transport;
|
|
uint8_t *data;
|
|
size_t size;
|
|
size_t num_read;
|
|
};
|
|
|
|
static void rpc_read_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *rpc_read_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_cli_transport *transport,
|
|
uint8_t *data, size_t size)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct rpc_read_state *state;
|
|
|
|
req = tevent_req_create(mem_ctx, &state, struct rpc_read_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->transport = transport;
|
|
state->data = data;
|
|
state->size = size;
|
|
state->num_read = 0;
|
|
|
|
DBG_INFO("data_to_read: %zu\n", size);
|
|
|
|
subreq = transport->read_send(state, ev, (uint8_t *)data, size,
|
|
transport->priv);
|
|
if (subreq == NULL) {
|
|
goto fail;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_read_done, req);
|
|
return req;
|
|
|
|
fail:
|
|
TALLOC_FREE(req);
|
|
return NULL;
|
|
}
|
|
|
|
static void rpc_read_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_read_state *state = tevent_req_data(
|
|
req, struct rpc_read_state);
|
|
NTSTATUS status;
|
|
ssize_t received;
|
|
|
|
status = state->transport->read_recv(subreq, &received);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
state->num_read += received;
|
|
if (state->num_read == state->size) {
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
subreq = state->transport->read_send(state, state->ev,
|
|
state->data + state->num_read,
|
|
state->size - state->num_read,
|
|
state->transport->priv);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_read_done, req);
|
|
}
|
|
|
|
static NTSTATUS rpc_read_recv(struct tevent_req *req)
|
|
{
|
|
return tevent_req_simple_recv_ntstatus(req);
|
|
}
|
|
|
|
struct rpc_write_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_cli_transport *transport;
|
|
const uint8_t *data;
|
|
size_t size;
|
|
size_t num_written;
|
|
};
|
|
|
|
static void rpc_write_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *rpc_write_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_cli_transport *transport,
|
|
const uint8_t *data, size_t size)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct rpc_write_state *state;
|
|
|
|
req = tevent_req_create(mem_ctx, &state, struct rpc_write_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->transport = transport;
|
|
state->data = data;
|
|
state->size = size;
|
|
state->num_written = 0;
|
|
|
|
DBG_INFO("data_to_write: %zu\n", size);
|
|
|
|
subreq = transport->write_send(state, ev, data, size, transport->priv);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_write_done, req);
|
|
return req;
|
|
}
|
|
|
|
static void rpc_write_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_write_state *state = tevent_req_data(
|
|
req, struct rpc_write_state);
|
|
NTSTATUS status;
|
|
ssize_t written;
|
|
|
|
status = state->transport->write_recv(subreq, &written);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
state->num_written += written;
|
|
|
|
if (state->num_written == state->size) {
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
subreq = state->transport->write_send(state, state->ev,
|
|
state->data + state->num_written,
|
|
state->size - state->num_written,
|
|
state->transport->priv);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_write_done, req);
|
|
}
|
|
|
|
static NTSTATUS rpc_write_recv(struct tevent_req *req)
|
|
{
|
|
return tevent_req_simple_recv_ntstatus(req);
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
Try and get a PDU's worth of data from current_pdu. If not, then read more
|
|
from the wire.
|
|
****************************************************************************/
|
|
|
|
struct get_complete_frag_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_pipe_client *cli;
|
|
uint16_t frag_len;
|
|
DATA_BLOB *pdu;
|
|
};
|
|
|
|
static void get_complete_frag_got_header(struct tevent_req *subreq);
|
|
static void get_complete_frag_got_rest(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *get_complete_frag_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_pipe_client *cli,
|
|
DATA_BLOB *pdu)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct get_complete_frag_state *state;
|
|
size_t received;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct get_complete_frag_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->cli = cli;
|
|
state->frag_len = RPC_HEADER_LEN;
|
|
state->pdu = pdu;
|
|
|
|
received = pdu->length;
|
|
if (received < RPC_HEADER_LEN) {
|
|
if (!data_blob_realloc(mem_ctx, pdu, RPC_HEADER_LEN)) {
|
|
tevent_req_oom(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
subreq = rpc_read_send(state, state->ev,
|
|
state->cli->transport,
|
|
pdu->data + received,
|
|
RPC_HEADER_LEN - received);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, get_complete_frag_got_header,
|
|
req);
|
|
return req;
|
|
}
|
|
|
|
state->frag_len = dcerpc_get_frag_length(pdu);
|
|
if (state->frag_len < RPC_HEADER_LEN) {
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (received >= state->frag_len) {
|
|
/*
|
|
* Got the whole fragment
|
|
*/
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (!data_blob_realloc(NULL, pdu, state->frag_len)) {
|
|
tevent_req_oom(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
subreq = rpc_read_send(
|
|
state,
|
|
state->ev,
|
|
state->cli->transport,
|
|
pdu->data + received,
|
|
state->frag_len - received);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, get_complete_frag_got_rest, req);
|
|
return req;
|
|
}
|
|
|
|
static void get_complete_frag_got_header(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct get_complete_frag_state *state = tevent_req_data(
|
|
req, struct get_complete_frag_state);
|
|
NTSTATUS status;
|
|
|
|
status = rpc_read_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
state->frag_len = dcerpc_get_frag_length(state->pdu);
|
|
if (state->frag_len < RPC_HEADER_LEN) {
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (!data_blob_realloc(NULL, state->pdu, state->frag_len)) {
|
|
tevent_req_oom(req);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We're here in this piece of code because we've read exactly
|
|
* RPC_HEADER_LEN bytes into state->pdu.
|
|
*/
|
|
|
|
subreq = rpc_read_send(state, state->ev, state->cli->transport,
|
|
state->pdu->data + RPC_HEADER_LEN,
|
|
state->frag_len - RPC_HEADER_LEN);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, get_complete_frag_got_rest, req);
|
|
}
|
|
|
|
static void get_complete_frag_got_rest(struct tevent_req *subreq)
|
|
{
|
|
NTSTATUS status = rpc_read_recv(subreq);
|
|
return tevent_req_simple_finish_ntstatus(subreq, status);
|
|
}
|
|
|
|
static NTSTATUS get_complete_frag_recv(struct tevent_req *req)
|
|
{
|
|
return tevent_req_simple_recv_ntstatus(req);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Do basic authentication checks on an incoming pdu.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS cli_pipe_validate_current_pdu(TALLOC_CTX *mem_ctx,
|
|
struct rpc_pipe_client *cli,
|
|
struct ncacn_packet *pkt,
|
|
DATA_BLOB *pdu,
|
|
uint8_t expected_pkt_type,
|
|
uint32_t call_id,
|
|
DATA_BLOB *rdata,
|
|
DATA_BLOB *reply_pdu)
|
|
{
|
|
const struct dcerpc_response *r = NULL;
|
|
DATA_BLOB tmp_stub = { .data = NULL };
|
|
NTSTATUS ret;
|
|
|
|
/*
|
|
* Point the return values at the real data including the RPC
|
|
* header. Just in case the caller wants it.
|
|
*/
|
|
*rdata = *pdu;
|
|
|
|
if ((pkt->ptype == DCERPC_PKT_BIND_ACK) &&
|
|
!(pkt->pfc_flags & DCERPC_PFC_FLAG_LAST)) {
|
|
/*
|
|
* TODO: do we still need this hack which was introduced
|
|
* in commit a42afcdcc7ab9aa9ed193ae36d3dbb10843447f0.
|
|
*
|
|
* I don't even know what AS/U might be...
|
|
*/
|
|
DEBUG(5, (__location__ ": bug in server (AS/U?), setting "
|
|
"fragment first/last ON.\n"));
|
|
pkt->pfc_flags |= DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST;
|
|
}
|
|
|
|
/* Ensure we have the correct type. */
|
|
switch (pkt->ptype) {
|
|
case DCERPC_PKT_BIND_NAK:
|
|
DEBUG(1, (__location__ ": Bind NACK received from %s!\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli)));
|
|
|
|
ret = dcerpc_verify_ncacn_packet_header(pkt,
|
|
DCERPC_PKT_BIND_NAK,
|
|
0, /* max_auth_info */
|
|
DCERPC_PFC_FLAG_FIRST |
|
|
DCERPC_PFC_FLAG_LAST,
|
|
0); /* optional flags */
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(1, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC packet type - %u, expected %u: %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->ptype, expected_pkt_type,
|
|
nt_errstr(ret)));
|
|
NDR_PRINT_DEBUG(ncacn_packet, pkt);
|
|
return ret;
|
|
}
|
|
|
|
/* Use this for now... */
|
|
return NT_STATUS_NETWORK_ACCESS_DENIED;
|
|
|
|
case DCERPC_PKT_BIND_ACK:
|
|
ret = dcerpc_verify_ncacn_packet_header(pkt,
|
|
expected_pkt_type,
|
|
pkt->u.bind_ack.auth_info.length,
|
|
DCERPC_PFC_FLAG_FIRST |
|
|
DCERPC_PFC_FLAG_LAST,
|
|
DCERPC_PFC_FLAG_CONC_MPX |
|
|
DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(1, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC packet type - %u, expected %u: %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->ptype, expected_pkt_type,
|
|
nt_errstr(ret)));
|
|
NDR_PRINT_DEBUG(ncacn_packet, pkt);
|
|
return ret;
|
|
}
|
|
|
|
break;
|
|
|
|
case DCERPC_PKT_ALTER_RESP:
|
|
ret = dcerpc_verify_ncacn_packet_header(pkt,
|
|
expected_pkt_type,
|
|
pkt->u.alter_resp.auth_info.length,
|
|
DCERPC_PFC_FLAG_FIRST |
|
|
DCERPC_PFC_FLAG_LAST,
|
|
DCERPC_PFC_FLAG_CONC_MPX |
|
|
DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(1, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC packet type - %u, expected %u: %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->ptype, expected_pkt_type,
|
|
nt_errstr(ret)));
|
|
NDR_PRINT_DEBUG(ncacn_packet, pkt);
|
|
return ret;
|
|
}
|
|
|
|
break;
|
|
|
|
case DCERPC_PKT_RESPONSE:
|
|
|
|
r = &pkt->u.response;
|
|
|
|
ret = dcerpc_verify_ncacn_packet_header(pkt,
|
|
expected_pkt_type,
|
|
r->stub_and_verifier.length,
|
|
0, /* required_flags */
|
|
DCERPC_PFC_FLAG_FIRST |
|
|
DCERPC_PFC_FLAG_LAST);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(1, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC packet type - %u, expected %u: %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->ptype, expected_pkt_type,
|
|
nt_errstr(ret)));
|
|
NDR_PRINT_DEBUG(ncacn_packet, pkt);
|
|
return ret;
|
|
}
|
|
|
|
tmp_stub.data = r->stub_and_verifier.data;
|
|
tmp_stub.length = r->stub_and_verifier.length;
|
|
|
|
/* Here's where we deal with incoming sign/seal. */
|
|
ret = dcerpc_check_auth(cli->auth, pkt,
|
|
&tmp_stub,
|
|
DCERPC_RESPONSE_LENGTH,
|
|
pdu);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(1, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC packet type - %u, expected %u: %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->ptype, expected_pkt_type,
|
|
nt_errstr(ret)));
|
|
NDR_PRINT_DEBUG(ncacn_packet, pkt);
|
|
return ret;
|
|
}
|
|
|
|
/* Point the return values at the NDR data. */
|
|
*rdata = tmp_stub;
|
|
|
|
DEBUG(10, ("Got pdu len %lu, data_len %lu\n",
|
|
(long unsigned int)pdu->length,
|
|
(long unsigned int)rdata->length));
|
|
|
|
/*
|
|
* If this is the first reply, and the allocation hint is
|
|
* reasonable, try and set up the reply_pdu DATA_BLOB to the
|
|
* correct size.
|
|
*/
|
|
|
|
if ((reply_pdu->length == 0) &&
|
|
r->alloc_hint && (r->alloc_hint < 15*1024*1024)) {
|
|
if (!data_blob_realloc(mem_ctx, reply_pdu,
|
|
r->alloc_hint)) {
|
|
DEBUG(0, ("reply alloc hint %d too "
|
|
"large to allocate\n",
|
|
(int)r->alloc_hint));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
case DCERPC_PKT_FAULT:
|
|
|
|
ret = dcerpc_verify_ncacn_packet_header(pkt,
|
|
DCERPC_PKT_FAULT,
|
|
0, /* max_auth_info */
|
|
DCERPC_PFC_FLAG_FIRST |
|
|
DCERPC_PFC_FLAG_LAST,
|
|
DCERPC_PFC_FLAG_DID_NOT_EXECUTE);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
DEBUG(1, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC packet type - %u, expected %u: %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->ptype, expected_pkt_type,
|
|
nt_errstr(ret)));
|
|
NDR_PRINT_DEBUG(ncacn_packet, pkt);
|
|
return ret;
|
|
}
|
|
|
|
DEBUG(1, (__location__ ": RPC fault code %s received "
|
|
"from %s!\n",
|
|
dcerpc_errstr(talloc_tos(),
|
|
pkt->u.fault.status),
|
|
rpccli_pipe_txt(talloc_tos(), cli)));
|
|
|
|
return dcerpc_fault_to_nt_status(pkt->u.fault.status);
|
|
|
|
default:
|
|
DEBUG(0, (__location__ "Unknown packet type %u received "
|
|
"from %s!\n",
|
|
(unsigned int)pkt->ptype,
|
|
rpccli_pipe_txt(talloc_tos(), cli)));
|
|
return NT_STATUS_RPC_PROTOCOL_ERROR;
|
|
}
|
|
|
|
|
|
if (pkt->call_id != call_id) {
|
|
DEBUG(3, (__location__ ": Connection to %s got an unexpected "
|
|
"RPC call_id - %u, not %u\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
pkt->call_id, call_id));
|
|
return NT_STATUS_RPC_PROTOCOL_ERROR;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Call a remote api on an arbitrary pipe. takes param, data and setup buffers.
|
|
****************************************************************************/
|
|
|
|
struct cli_api_pipe_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_cli_transport *transport;
|
|
uint8_t *rdata;
|
|
uint32_t rdata_len;
|
|
};
|
|
|
|
static void cli_api_pipe_trans_done(struct tevent_req *subreq);
|
|
static void cli_api_pipe_write_done(struct tevent_req *subreq);
|
|
static void cli_api_pipe_read_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *cli_api_pipe_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_cli_transport *transport,
|
|
uint8_t *data, size_t data_len,
|
|
uint32_t max_rdata_len)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct cli_api_pipe_state *state;
|
|
|
|
req = tevent_req_create(mem_ctx, &state, struct cli_api_pipe_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->transport = transport;
|
|
|
|
if (max_rdata_len < RPC_HEADER_LEN) {
|
|
/*
|
|
* For a RPC reply we always need at least RPC_HEADER_LEN
|
|
* bytes. We check this here because we will receive
|
|
* RPC_HEADER_LEN bytes in cli_trans_sock_send_done.
|
|
*/
|
|
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (transport->trans_send != NULL) {
|
|
subreq = transport->trans_send(state, ev, data, data_len,
|
|
max_rdata_len, transport->priv);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, cli_api_pipe_trans_done, req);
|
|
return req;
|
|
}
|
|
|
|
/*
|
|
* If the transport does not provide a "trans" routine, i.e. for
|
|
* example the ncacn_ip_tcp transport, do the write/read step here.
|
|
*/
|
|
|
|
subreq = rpc_write_send(state, ev, transport, data, data_len);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, cli_api_pipe_write_done, req);
|
|
return req;
|
|
}
|
|
|
|
static void cli_api_pipe_trans_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct cli_api_pipe_state *state = tevent_req_data(
|
|
req, struct cli_api_pipe_state);
|
|
NTSTATUS status;
|
|
|
|
status = state->transport->trans_recv(subreq, state, &state->rdata,
|
|
&state->rdata_len);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static void cli_api_pipe_write_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct cli_api_pipe_state *state = tevent_req_data(
|
|
req, struct cli_api_pipe_state);
|
|
NTSTATUS status;
|
|
|
|
status = rpc_write_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
state->rdata = talloc_array(state, uint8_t, RPC_HEADER_LEN);
|
|
if (tevent_req_nomem(state->rdata, req)) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We don't need to use rpc_read_send here, the upper layer will cope
|
|
* with a short read, transport->trans_send could also return less
|
|
* than state->max_rdata_len.
|
|
*/
|
|
subreq = state->transport->read_send(state, state->ev, state->rdata,
|
|
RPC_HEADER_LEN,
|
|
state->transport->priv);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, cli_api_pipe_read_done, req);
|
|
}
|
|
|
|
static void cli_api_pipe_read_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct cli_api_pipe_state *state = tevent_req_data(
|
|
req, struct cli_api_pipe_state);
|
|
NTSTATUS status;
|
|
ssize_t received;
|
|
|
|
status = state->transport->read_recv(subreq, &received);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
state->rdata_len = received;
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static NTSTATUS cli_api_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
|
|
uint8_t **prdata, uint32_t *prdata_len)
|
|
{
|
|
struct cli_api_pipe_state *state = tevent_req_data(
|
|
req, struct cli_api_pipe_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
return status;
|
|
}
|
|
|
|
*prdata = talloc_move(mem_ctx, &state->rdata);
|
|
*prdata_len = state->rdata_len;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Send data on an rpc pipe via trans. The data must be the last
|
|
pdu fragment of an NDR data stream.
|
|
|
|
Receive response data from an rpc pipe, which may be large...
|
|
|
|
Read the first fragment: unfortunately have to use SMBtrans for the first
|
|
bit, then SMBreadX for subsequent bits.
|
|
|
|
If first fragment received also wasn't the last fragment, continue
|
|
getting fragments until we _do_ receive the last fragment.
|
|
|
|
Request/Response PDU's look like the following...
|
|
|
|
|<------------------PDU len----------------------------------------------->|
|
|
|<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->|
|
|
|
|
+------------+-----------------+-------------+---------------+-------------+
|
|
| RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA |
|
|
+------------+-----------------+-------------+---------------+-------------+
|
|
|
|
Where the presence of the AUTH_HDR and AUTH DATA are dependent on the
|
|
signing & sealing being negotiated.
|
|
|
|
****************************************************************************/
|
|
|
|
struct rpc_api_pipe_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_pipe_client *cli;
|
|
uint8_t expected_pkt_type;
|
|
uint32_t call_id;
|
|
|
|
DATA_BLOB incoming_frag;
|
|
struct ncacn_packet *pkt;
|
|
|
|
/* Incoming reply */
|
|
DATA_BLOB reply_pdu;
|
|
size_t reply_pdu_offset;
|
|
uint8_t endianness;
|
|
};
|
|
|
|
static void rpc_api_pipe_trans_done(struct tevent_req *subreq);
|
|
static void rpc_api_pipe_got_pdu(struct tevent_req *subreq);
|
|
static void rpc_api_pipe_auth3_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *rpc_api_pipe_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_pipe_client *cli,
|
|
DATA_BLOB *data, /* Outgoing PDU */
|
|
uint8_t expected_pkt_type,
|
|
uint32_t call_id)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct rpc_api_pipe_state *state;
|
|
uint16_t max_recv_frag;
|
|
|
|
req = tevent_req_create(mem_ctx, &state, struct rpc_api_pipe_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->cli = cli;
|
|
state->expected_pkt_type = expected_pkt_type;
|
|
state->call_id = call_id;
|
|
state->endianness = DCERPC_DREP_LE;
|
|
|
|
/*
|
|
* Ensure we're not sending too much.
|
|
*/
|
|
if (data->length > cli->max_xmit_frag) {
|
|
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
DEBUG(5,("rpc_api_pipe: %s\n", rpccli_pipe_txt(talloc_tos(), cli)));
|
|
|
|
if (state->expected_pkt_type == DCERPC_PKT_AUTH3) {
|
|
subreq = rpc_write_send(state, ev, cli->transport,
|
|
data->data, data->length);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_auth3_done, req);
|
|
return req;
|
|
}
|
|
|
|
/* get the header first, then fetch the rest once we have
|
|
* the frag_length available */
|
|
max_recv_frag = RPC_HEADER_LEN;
|
|
|
|
subreq = cli_api_pipe_send(state, ev, cli->transport,
|
|
data->data, data->length, max_recv_frag);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_trans_done, req);
|
|
return req;
|
|
}
|
|
|
|
static void rpc_api_pipe_auth3_done(struct tevent_req *subreq)
|
|
{
|
|
NTSTATUS status = rpc_write_recv(subreq);
|
|
return tevent_req_simple_finish_ntstatus(subreq, status);
|
|
}
|
|
|
|
static void rpc_api_pipe_trans_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_api_pipe_state *state = tevent_req_data(
|
|
req, struct rpc_api_pipe_state);
|
|
NTSTATUS status;
|
|
uint8_t *rdata = NULL;
|
|
uint32_t rdata_len = 0;
|
|
|
|
status = cli_api_pipe_recv(subreq, state, &rdata, &rdata_len);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {;
|
|
DEBUG(5, ("cli_api_pipe failed: %s\n", nt_errstr(status)));
|
|
return;
|
|
}
|
|
|
|
if (rdata == NULL) {
|
|
DEBUG(3,("rpc_api_pipe: %s failed to return data.\n",
|
|
rpccli_pipe_txt(talloc_tos(), state->cli)));
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Move data on state->incoming_frag.
|
|
*/
|
|
state->incoming_frag.data = talloc_move(state, &rdata);
|
|
state->incoming_frag.length = rdata_len;
|
|
if (!state->incoming_frag.data) {
|
|
tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
|
|
return;
|
|
}
|
|
|
|
/* Ensure we have enough data for a pdu. */
|
|
subreq = get_complete_frag_send(state, state->ev, state->cli,
|
|
&state->incoming_frag);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_got_pdu, req);
|
|
}
|
|
|
|
static void rpc_api_pipe_got_pdu(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_api_pipe_state *state = tevent_req_data(
|
|
req, struct rpc_api_pipe_state);
|
|
NTSTATUS status;
|
|
DATA_BLOB rdata = { .data = NULL };
|
|
|
|
status = get_complete_frag_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
DEBUG(5, ("get_complete_frag failed: %s\n",
|
|
nt_errstr(status)));
|
|
return;
|
|
}
|
|
|
|
state->pkt = talloc(state, struct ncacn_packet);
|
|
if (!state->pkt) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
tevent_req_oom(req);
|
|
return;
|
|
}
|
|
|
|
status = dcerpc_pull_ncacn_packet(state->pkt,
|
|
&state->incoming_frag,
|
|
state->pkt);
|
|
if (tevent_req_nterror(req, status)) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
return;
|
|
}
|
|
|
|
if (DEBUGLEVEL >= 10) {
|
|
NDR_PRINT_DEBUG(ncacn_packet, state->pkt);
|
|
}
|
|
|
|
status = cli_pipe_validate_current_pdu(state,
|
|
state->cli, state->pkt,
|
|
&state->incoming_frag,
|
|
state->expected_pkt_type,
|
|
state->call_id,
|
|
&rdata,
|
|
&state->reply_pdu);
|
|
|
|
DBG_DEBUG("got frag len of %zu at offset %zu: %s\n",
|
|
state->incoming_frag.length,
|
|
state->reply_pdu_offset,
|
|
nt_errstr(status));
|
|
|
|
if (state->pkt->ptype != DCERPC_PKT_FAULT && !NT_STATUS_IS_OK(status)) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
} else if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_PROTOCOL_ERROR)) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
} else if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_SEC_PKG_ERROR)) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
}
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
if ((state->pkt->pfc_flags & DCERPC_PFC_FLAG_FIRST)
|
|
&& (state->pkt->drep[0] != DCERPC_DREP_LE)) {
|
|
/*
|
|
* Set the data type correctly for big-endian data on the
|
|
* first packet.
|
|
*/
|
|
DEBUG(10,("rpc_api_pipe: On %s PDU data format is "
|
|
"big-endian.\n",
|
|
rpccli_pipe_txt(talloc_tos(), state->cli)));
|
|
state->endianness = 0x00; /* BIG ENDIAN */
|
|
}
|
|
/*
|
|
* Check endianness on subsequent packets.
|
|
*/
|
|
if (state->endianness != state->pkt->drep[0]) {
|
|
DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to "
|
|
"%s\n",
|
|
state->endianness?"little":"big",
|
|
state->pkt->drep[0]?"little":"big"));
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (state->reply_pdu_offset + rdata.length > MAX_RPC_DATA_SIZE) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
/* Now copy the data portion out of the pdu into rbuf. */
|
|
if (state->reply_pdu.length < state->reply_pdu_offset + rdata.length) {
|
|
if (!data_blob_realloc(NULL, &state->reply_pdu,
|
|
state->reply_pdu_offset + rdata.length)) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
tevent_req_oom(req);
|
|
return;
|
|
}
|
|
}
|
|
|
|
memcpy(state->reply_pdu.data + state->reply_pdu_offset,
|
|
rdata.data, rdata.length);
|
|
state->reply_pdu_offset += rdata.length;
|
|
|
|
/* reset state->incoming_frag, there is no need to free it,
|
|
* it will be reallocated to the right size the next time
|
|
* it is used */
|
|
state->incoming_frag.length = 0;
|
|
|
|
if (state->pkt->pfc_flags & DCERPC_PFC_FLAG_LAST) {
|
|
/* make sure the pdu length is right now that we
|
|
* have all the data available (alloc hint may
|
|
* have allocated more than was actually used) */
|
|
state->reply_pdu.length = state->reply_pdu_offset;
|
|
DEBUG(10,("rpc_api_pipe: %s returned %u bytes.\n",
|
|
rpccli_pipe_txt(talloc_tos(), state->cli),
|
|
(unsigned)state->reply_pdu.length));
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
subreq = get_complete_frag_send(state, state->ev, state->cli,
|
|
&state->incoming_frag);
|
|
if (subreq == NULL) {
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now do it sync...
|
|
*/
|
|
TALLOC_FREE(state->cli->transport);
|
|
}
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_got_pdu, req);
|
|
}
|
|
|
|
static NTSTATUS rpc_api_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
|
|
struct ncacn_packet **pkt,
|
|
DATA_BLOB *reply_pdu)
|
|
{
|
|
struct rpc_api_pipe_state *state = tevent_req_data(
|
|
req, struct rpc_api_pipe_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
return status;
|
|
}
|
|
|
|
/* return data to caller and assign it ownership of memory */
|
|
if (reply_pdu) {
|
|
reply_pdu->data = talloc_move(mem_ctx, &state->reply_pdu.data);
|
|
reply_pdu->length = state->reply_pdu.length;
|
|
state->reply_pdu.length = 0;
|
|
} else {
|
|
data_blob_free(&state->reply_pdu);
|
|
}
|
|
|
|
if (pkt) {
|
|
*pkt = talloc_steal(mem_ctx, state->pkt);
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Creates NTLMSSP auth bind.
|
|
********************************************************************/
|
|
|
|
static NTSTATUS create_generic_auth_rpc_bind_req(struct rpc_pipe_client *cli,
|
|
TALLOC_CTX *mem_ctx,
|
|
DATA_BLOB *auth_token,
|
|
bool *client_hdr_signing)
|
|
{
|
|
struct gensec_security *gensec_security;
|
|
DATA_BLOB null_blob = { .data = NULL };
|
|
NTSTATUS status;
|
|
|
|
gensec_security = cli->auth->auth_ctx;
|
|
|
|
DEBUG(5, ("create_generic_auth_rpc_bind_req: generate first token\n"));
|
|
status = gensec_update(gensec_security, mem_ctx, null_blob, auth_token);
|
|
|
|
if (!NT_STATUS_IS_OK(status) &&
|
|
!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED))
|
|
{
|
|
return status;
|
|
}
|
|
|
|
if (client_hdr_signing == NULL) {
|
|
return status;
|
|
}
|
|
|
|
if (cli->auth->auth_level < DCERPC_AUTH_LEVEL_PACKET) {
|
|
*client_hdr_signing = false;
|
|
return status;
|
|
}
|
|
|
|
*client_hdr_signing = gensec_have_feature(gensec_security,
|
|
GENSEC_FEATURE_SIGN_PKT_HEADER);
|
|
|
|
return status;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Creates the internals of a DCE/RPC bind request or alter context PDU.
|
|
********************************************************************/
|
|
|
|
static NTSTATUS create_bind_or_alt_ctx_internal(TALLOC_CTX *mem_ctx,
|
|
enum dcerpc_pkt_type ptype,
|
|
uint32_t rpc_call_id,
|
|
const struct ndr_syntax_id *abstract,
|
|
const struct ndr_syntax_id *transfer,
|
|
const DATA_BLOB *auth_info,
|
|
bool client_hdr_signing,
|
|
DATA_BLOB *blob)
|
|
{
|
|
uint16_t auth_len = auth_info->length;
|
|
NTSTATUS status;
|
|
struct dcerpc_ctx_list ctx_list = {
|
|
.context_id = 0,
|
|
.num_transfer_syntaxes = 1,
|
|
.abstract_syntax = *abstract,
|
|
.transfer_syntaxes = (struct ndr_syntax_id *)discard_const(transfer),
|
|
};
|
|
union dcerpc_payload u = {
|
|
.bind.max_xmit_frag = RPC_MAX_PDU_FRAG_LEN,
|
|
.bind.max_recv_frag = RPC_MAX_PDU_FRAG_LEN,
|
|
.bind.num_contexts = 1,
|
|
.bind.ctx_list = &ctx_list,
|
|
.bind.auth_info = *auth_info,
|
|
};
|
|
uint8_t pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST;
|
|
|
|
if (auth_len) {
|
|
auth_len -= DCERPC_AUTH_TRAILER_LENGTH;
|
|
}
|
|
|
|
if (client_hdr_signing) {
|
|
pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
|
|
}
|
|
|
|
status = dcerpc_push_ncacn_packet(mem_ctx,
|
|
ptype, pfc_flags,
|
|
auth_len,
|
|
rpc_call_id,
|
|
&u,
|
|
blob);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("Failed to marshall bind/alter ncacn_packet.\n"));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Creates a DCE/RPC bind request.
|
|
********************************************************************/
|
|
|
|
static NTSTATUS create_rpc_bind_req(TALLOC_CTX *mem_ctx,
|
|
struct rpc_pipe_client *cli,
|
|
struct pipe_auth_data *auth,
|
|
uint32_t rpc_call_id,
|
|
const struct ndr_syntax_id *abstract,
|
|
const struct ndr_syntax_id *transfer,
|
|
DATA_BLOB *rpc_out)
|
|
{
|
|
DATA_BLOB auth_token = { .data = NULL };
|
|
DATA_BLOB auth_info = { .data = NULL };
|
|
NTSTATUS ret;
|
|
|
|
if (auth->auth_type != DCERPC_AUTH_TYPE_NONE) {
|
|
ret = create_generic_auth_rpc_bind_req(
|
|
cli, mem_ctx, &auth_token, &auth->client_hdr_signing);
|
|
|
|
if (!NT_STATUS_IS_OK(ret) &&
|
|
!NT_STATUS_EQUAL(ret, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (auth_token.length != 0) {
|
|
ret = dcerpc_push_dcerpc_auth(cli,
|
|
auth->auth_type,
|
|
auth->auth_level,
|
|
0, /* auth_pad_length */
|
|
auth->auth_context_id,
|
|
&auth_token,
|
|
&auth_info);
|
|
if (!NT_STATUS_IS_OK(ret)) {
|
|
return ret;
|
|
}
|
|
data_blob_free(&auth_token);
|
|
}
|
|
|
|
ret = create_bind_or_alt_ctx_internal(mem_ctx,
|
|
DCERPC_PKT_BIND,
|
|
rpc_call_id,
|
|
abstract,
|
|
transfer,
|
|
&auth_info,
|
|
auth->client_hdr_signing,
|
|
rpc_out);
|
|
data_blob_free(&auth_info);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*******************************************************************
|
|
External interface.
|
|
Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
|
|
Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
|
|
and deals with signing/sealing details.
|
|
********************************************************************/
|
|
|
|
struct rpc_api_pipe_req_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_pipe_client *cli;
|
|
uint8_t op_num;
|
|
uint32_t call_id;
|
|
const DATA_BLOB *req_data;
|
|
const struct GUID *object_uuid;
|
|
uint32_t req_data_sent;
|
|
DATA_BLOB req_trailer;
|
|
uint32_t req_trailer_sent;
|
|
bool verify_bitmask1;
|
|
bool verify_pcontext;
|
|
DATA_BLOB rpc_out;
|
|
DATA_BLOB reply_pdu;
|
|
};
|
|
|
|
static void rpc_api_pipe_req_write_done(struct tevent_req *subreq);
|
|
static void rpc_api_pipe_req_done(struct tevent_req *subreq);
|
|
static NTSTATUS prepare_verification_trailer(struct rpc_api_pipe_req_state *state);
|
|
static NTSTATUS prepare_next_frag(struct rpc_api_pipe_req_state *state,
|
|
bool *is_last_frag);
|
|
|
|
static struct tevent_req *rpc_api_pipe_req_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_pipe_client *cli,
|
|
uint8_t op_num,
|
|
const struct GUID *object_uuid,
|
|
const DATA_BLOB *req_data)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct rpc_api_pipe_req_state *state;
|
|
NTSTATUS status;
|
|
bool is_last_frag;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct rpc_api_pipe_req_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->ev = ev;
|
|
state->cli = cli;
|
|
state->op_num = op_num;
|
|
state->object_uuid = object_uuid;
|
|
state->req_data = req_data;
|
|
state->call_id = get_rpc_call_id();
|
|
|
|
if (cli->max_xmit_frag < DCERPC_REQUEST_LENGTH
|
|
+ RPC_MAX_SIGN_SIZE) {
|
|
/* Server is screwed up ! */
|
|
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
status = prepare_verification_trailer(state);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
status = prepare_next_frag(state, &is_last_frag);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
if (is_last_frag) {
|
|
subreq = rpc_api_pipe_send(state, ev, state->cli,
|
|
&state->rpc_out,
|
|
DCERPC_PKT_RESPONSE,
|
|
state->call_id);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_req_done, req);
|
|
} else {
|
|
subreq = rpc_write_send(state, ev, cli->transport,
|
|
state->rpc_out.data,
|
|
state->rpc_out.length);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_req_write_done,
|
|
req);
|
|
}
|
|
return req;
|
|
}
|
|
|
|
static NTSTATUS prepare_verification_trailer(struct rpc_api_pipe_req_state *state)
|
|
{
|
|
struct pipe_auth_data *a = state->cli->auth;
|
|
struct dcerpc_sec_verification_trailer *t;
|
|
struct ndr_push *ndr = NULL;
|
|
enum ndr_err_code ndr_err;
|
|
size_t align = 0;
|
|
size_t pad = 0;
|
|
|
|
if (a == NULL) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
if (a->auth_level < DCERPC_AUTH_LEVEL_PACKET) {
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
t = talloc_zero(state, struct dcerpc_sec_verification_trailer);
|
|
if (t == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (!a->verified_bitmask1) {
|
|
t->commands = talloc_realloc(t, t->commands,
|
|
struct dcerpc_sec_vt,
|
|
t->count.count + 1);
|
|
if (t->commands == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
t->commands[t->count.count++] = (struct dcerpc_sec_vt) {
|
|
.command = DCERPC_SEC_VT_COMMAND_BITMASK1,
|
|
.u.bitmask1 = (a->client_hdr_signing) ?
|
|
DCERPC_SEC_VT_CLIENT_SUPPORTS_HEADER_SIGNING :
|
|
0,
|
|
};
|
|
state->verify_bitmask1 = true;
|
|
}
|
|
|
|
if (!state->cli->verified_pcontext) {
|
|
t->commands = talloc_realloc(t, t->commands,
|
|
struct dcerpc_sec_vt,
|
|
t->count.count + 1);
|
|
if (t->commands == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
t->commands[t->count.count++] = (struct dcerpc_sec_vt) {
|
|
.command = DCERPC_SEC_VT_COMMAND_PCONTEXT,
|
|
.u.pcontext.abstract_syntax =
|
|
state->cli->abstract_syntax,
|
|
.u.pcontext.transfer_syntax =
|
|
state->cli->transfer_syntax,
|
|
};
|
|
state->verify_pcontext = true;
|
|
}
|
|
|
|
if (!a->hdr_signing) {
|
|
t->commands = talloc_realloc(t, t->commands,
|
|
struct dcerpc_sec_vt,
|
|
t->count.count + 1);
|
|
if (t->commands == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
t->commands[t->count.count++] = (struct dcerpc_sec_vt) {
|
|
.command = DCERPC_SEC_VT_COMMAND_HEADER2,
|
|
.u.header2.ptype = DCERPC_PKT_REQUEST,
|
|
.u.header2.drep[0] = DCERPC_DREP_LE,
|
|
.u.header2.call_id = state->call_id,
|
|
.u.header2.context_id = 0,
|
|
.u.header2.opnum = state->op_num,
|
|
};
|
|
}
|
|
|
|
if (t->count.count == 0) {
|
|
TALLOC_FREE(t);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
t->commands[t->count.count - 1].command |= DCERPC_SEC_VT_COMMAND_END;
|
|
|
|
if (DEBUGLEVEL >= 10) {
|
|
NDR_PRINT_DEBUG(dcerpc_sec_verification_trailer, t);
|
|
}
|
|
|
|
ndr = ndr_push_init_ctx(state);
|
|
if (ndr == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
ndr_err = ndr_push_dcerpc_sec_verification_trailer(ndr,
|
|
NDR_SCALARS | NDR_BUFFERS,
|
|
t);
|
|
TALLOC_FREE(t);
|
|
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
|
|
return ndr_map_error2ntstatus(ndr_err);
|
|
}
|
|
state->req_trailer = ndr_push_blob(ndr);
|
|
|
|
align = state->req_data->length & 0x3;
|
|
if (align > 0) {
|
|
pad = 4 - align;
|
|
}
|
|
if (pad > 0) {
|
|
bool ok;
|
|
uint8_t *p;
|
|
const uint8_t zeros[4] = { 0, };
|
|
|
|
ok = data_blob_append(ndr, &state->req_trailer, zeros, pad);
|
|
if (!ok) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* move the padding to the start */
|
|
p = state->req_trailer.data;
|
|
memmove(p + pad, p, state->req_trailer.length - pad);
|
|
memset(p, 0, pad);
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS prepare_next_frag(struct rpc_api_pipe_req_state *state,
|
|
bool *is_last_frag)
|
|
{
|
|
size_t auth_len;
|
|
size_t frag_len;
|
|
uint8_t flags = 0;
|
|
size_t pad_len;
|
|
size_t data_left;
|
|
size_t data_thistime;
|
|
size_t trailer_left;
|
|
size_t trailer_thistime = 0;
|
|
size_t total_left;
|
|
size_t total_thistime;
|
|
NTSTATUS status;
|
|
bool ok;
|
|
union dcerpc_payload u;
|
|
|
|
data_left = state->req_data->length - state->req_data_sent;
|
|
trailer_left = state->req_trailer.length - state->req_trailer_sent;
|
|
total_left = data_left + trailer_left;
|
|
if ((total_left < data_left) || (total_left < trailer_left)) {
|
|
/*
|
|
* overflow
|
|
*/
|
|
return NT_STATUS_INVALID_PARAMETER_MIX;
|
|
}
|
|
|
|
status = dcerpc_guess_sizes(state->cli->auth,
|
|
DCERPC_REQUEST_LENGTH, total_left,
|
|
state->cli->max_xmit_frag,
|
|
&total_thistime,
|
|
&frag_len, &auth_len, &pad_len);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
if (state->req_data_sent == 0) {
|
|
flags = DCERPC_PFC_FLAG_FIRST;
|
|
}
|
|
|
|
if (total_thistime == total_left) {
|
|
flags |= DCERPC_PFC_FLAG_LAST;
|
|
}
|
|
|
|
data_thistime = MIN(total_thistime, data_left);
|
|
if (data_thistime < total_thistime) {
|
|
trailer_thistime = total_thistime - data_thistime;
|
|
}
|
|
|
|
data_blob_free(&state->rpc_out);
|
|
|
|
u = (union dcerpc_payload) {
|
|
.request.alloc_hint = total_left,
|
|
.request.context_id = 0,
|
|
.request.opnum = state->op_num,
|
|
};
|
|
|
|
if (state->object_uuid) {
|
|
flags |= DCERPC_PFC_FLAG_OBJECT_UUID;
|
|
u.request.object.object = *state->object_uuid;
|
|
frag_len += ndr_size_GUID(state->object_uuid, 0);
|
|
}
|
|
|
|
status = dcerpc_push_ncacn_packet(state,
|
|
DCERPC_PKT_REQUEST,
|
|
flags,
|
|
auth_len,
|
|
state->call_id,
|
|
&u,
|
|
&state->rpc_out);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
/* explicitly set frag_len here as dcerpc_push_ncacn_packet() can't
|
|
* compute it right for requests because the auth trailer is missing
|
|
* at this stage */
|
|
dcerpc_set_frag_length(&state->rpc_out, frag_len);
|
|
|
|
if (data_thistime > 0) {
|
|
/* Copy in the data. */
|
|
ok = data_blob_append(NULL, &state->rpc_out,
|
|
state->req_data->data + state->req_data_sent,
|
|
data_thistime);
|
|
if (!ok) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
state->req_data_sent += data_thistime;
|
|
}
|
|
|
|
if (trailer_thistime > 0) {
|
|
/* Copy in the verification trailer. */
|
|
ok = data_blob_append(NULL, &state->rpc_out,
|
|
state->req_trailer.data + state->req_trailer_sent,
|
|
trailer_thistime);
|
|
if (!ok) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
state->req_trailer_sent += trailer_thistime;
|
|
}
|
|
|
|
switch (state->cli->auth->auth_level) {
|
|
case DCERPC_AUTH_LEVEL_NONE:
|
|
case DCERPC_AUTH_LEVEL_CONNECT:
|
|
break;
|
|
case DCERPC_AUTH_LEVEL_PACKET:
|
|
case DCERPC_AUTH_LEVEL_INTEGRITY:
|
|
case DCERPC_AUTH_LEVEL_PRIVACY:
|
|
status = dcerpc_add_auth_footer(state->cli->auth, pad_len,
|
|
&state->rpc_out);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
break;
|
|
default:
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
*is_last_frag = ((flags & DCERPC_PFC_FLAG_LAST) != 0);
|
|
|
|
return status;
|
|
}
|
|
|
|
static void rpc_api_pipe_req_write_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_api_pipe_req_state *state = tevent_req_data(
|
|
req, struct rpc_api_pipe_req_state);
|
|
NTSTATUS status;
|
|
bool is_last_frag;
|
|
|
|
status = rpc_write_recv(subreq);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
status = prepare_next_frag(state, &is_last_frag);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
if (is_last_frag) {
|
|
subreq = rpc_api_pipe_send(state, state->ev, state->cli,
|
|
&state->rpc_out,
|
|
DCERPC_PKT_RESPONSE,
|
|
state->call_id);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_req_done, req);
|
|
} else {
|
|
subreq = rpc_write_send(state, state->ev,
|
|
state->cli->transport,
|
|
state->rpc_out.data,
|
|
state->rpc_out.length);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_api_pipe_req_write_done,
|
|
req);
|
|
}
|
|
}
|
|
|
|
static void rpc_api_pipe_req_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_api_pipe_req_state *state = tevent_req_data(
|
|
req, struct rpc_api_pipe_req_state);
|
|
NTSTATUS status;
|
|
|
|
status = rpc_api_pipe_recv(subreq, state, NULL, &state->reply_pdu);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
if (state->cli->auth == NULL) {
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
if (state->verify_bitmask1) {
|
|
state->cli->auth->verified_bitmask1 = true;
|
|
}
|
|
|
|
if (state->verify_pcontext) {
|
|
state->cli->verified_pcontext = true;
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static NTSTATUS rpc_api_pipe_req_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
|
|
DATA_BLOB *reply_pdu)
|
|
{
|
|
struct rpc_api_pipe_req_state *state = tevent_req_data(
|
|
req, struct rpc_api_pipe_req_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
/*
|
|
* We always have to initialize to reply pdu, even if there is
|
|
* none. The rpccli_* caller routines expect this.
|
|
*/
|
|
*reply_pdu = data_blob_null;
|
|
return status;
|
|
}
|
|
|
|
/* return data to caller and assign it ownership of memory */
|
|
reply_pdu->data = talloc_move(mem_ctx, &state->reply_pdu.data);
|
|
reply_pdu->length = state->reply_pdu.length;
|
|
state->reply_pdu.length = 0;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Check the rpc bind acknowledge response.
|
|
****************************************************************************/
|
|
|
|
static bool check_bind_response(const struct dcerpc_bind_ack *r,
|
|
const struct ndr_syntax_id *transfer)
|
|
{
|
|
struct dcerpc_ack_ctx ctx;
|
|
bool equal;
|
|
|
|
if (r->secondary_address_size == 0) {
|
|
DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)\n"));
|
|
}
|
|
|
|
if (r->num_results < 1 || !r->ctx_list) {
|
|
return false;
|
|
}
|
|
|
|
ctx = r->ctx_list[0];
|
|
|
|
/* check the transfer syntax */
|
|
equal = ndr_syntax_id_equal(&ctx.syntax, transfer);
|
|
if (!equal) {
|
|
DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
|
|
return False;
|
|
}
|
|
|
|
if (r->num_results != 0x1 || ctx.result != 0) {
|
|
DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
|
|
r->num_results, ctx.reason.value));
|
|
}
|
|
|
|
DEBUG(5,("check_bind_response: accepted!\n"));
|
|
return True;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Creates a DCE/RPC bind authentication response.
|
|
This is the packet that is sent back to the server once we
|
|
have received a BIND-ACK, to finish the third leg of
|
|
the authentication handshake.
|
|
********************************************************************/
|
|
|
|
static NTSTATUS create_rpc_bind_auth3(TALLOC_CTX *mem_ctx,
|
|
struct rpc_pipe_client *cli,
|
|
struct pipe_auth_data *auth,
|
|
uint32_t rpc_call_id,
|
|
DATA_BLOB *pauth_blob,
|
|
DATA_BLOB *rpc_out)
|
|
{
|
|
NTSTATUS status;
|
|
union dcerpc_payload u = { .auth3._pad = 0, };
|
|
|
|
status = dcerpc_push_dcerpc_auth(mem_ctx,
|
|
auth->auth_type,
|
|
auth->auth_level,
|
|
0, /* auth_pad_length */
|
|
auth->auth_context_id,
|
|
pauth_blob,
|
|
&u.auth3.auth_info);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
status = dcerpc_push_ncacn_packet(mem_ctx,
|
|
DCERPC_PKT_AUTH3,
|
|
DCERPC_PFC_FLAG_FIRST |
|
|
DCERPC_PFC_FLAG_LAST,
|
|
pauth_blob->length,
|
|
rpc_call_id,
|
|
&u,
|
|
rpc_out);
|
|
data_blob_free(&u.auth3.auth_info);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
|
|
return status;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Creates a DCE/RPC bind alter context authentication request which
|
|
may contain a spnego auth blob
|
|
********************************************************************/
|
|
|
|
static NTSTATUS create_rpc_alter_context(TALLOC_CTX *mem_ctx,
|
|
struct pipe_auth_data *auth,
|
|
uint32_t rpc_call_id,
|
|
const struct ndr_syntax_id *abstract,
|
|
const struct ndr_syntax_id *transfer,
|
|
const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
|
|
DATA_BLOB *rpc_out)
|
|
{
|
|
DATA_BLOB auth_info;
|
|
NTSTATUS status;
|
|
|
|
status = dcerpc_push_dcerpc_auth(mem_ctx,
|
|
auth->auth_type,
|
|
auth->auth_level,
|
|
0, /* auth_pad_length */
|
|
auth->auth_context_id,
|
|
pauth_blob,
|
|
&auth_info);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
status = create_bind_or_alt_ctx_internal(mem_ctx,
|
|
DCERPC_PKT_ALTER,
|
|
rpc_call_id,
|
|
abstract,
|
|
transfer,
|
|
&auth_info,
|
|
false, /* client_hdr_signing */
|
|
rpc_out);
|
|
data_blob_free(&auth_info);
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Do an rpc bind.
|
|
****************************************************************************/
|
|
|
|
struct rpc_pipe_bind_state {
|
|
struct tevent_context *ev;
|
|
struct rpc_pipe_client *cli;
|
|
DATA_BLOB rpc_out;
|
|
bool auth3;
|
|
uint32_t rpc_call_id;
|
|
};
|
|
|
|
static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq);
|
|
static NTSTATUS rpc_bind_next_send(struct tevent_req *req,
|
|
struct rpc_pipe_bind_state *state,
|
|
DATA_BLOB *credentials);
|
|
static NTSTATUS rpc_bind_finish_send(struct tevent_req *req,
|
|
struct rpc_pipe_bind_state *state,
|
|
DATA_BLOB *credentials);
|
|
|
|
struct tevent_req *rpc_pipe_bind_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct rpc_pipe_client *cli,
|
|
struct pipe_auth_data *auth)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct rpc_pipe_bind_state *state;
|
|
NTSTATUS status;
|
|
|
|
req = tevent_req_create(mem_ctx, &state, struct rpc_pipe_bind_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
DEBUG(5,("Bind RPC Pipe: %s auth_type %u, auth_level %u\n",
|
|
rpccli_pipe_txt(talloc_tos(), cli),
|
|
(unsigned int)auth->auth_type,
|
|
(unsigned int)auth->auth_level ));
|
|
|
|
state->ev = ev;
|
|
state->cli = cli;
|
|
state->rpc_call_id = get_rpc_call_id();
|
|
|
|
cli->auth = talloc_move(cli, &auth);
|
|
|
|
/* Marshall the outgoing data. */
|
|
status = create_rpc_bind_req(state, cli,
|
|
cli->auth,
|
|
state->rpc_call_id,
|
|
&cli->abstract_syntax,
|
|
&cli->transfer_syntax,
|
|
&state->rpc_out);
|
|
|
|
if (!NT_STATUS_IS_OK(status) &&
|
|
!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
tevent_req_nterror(req, status);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
subreq = rpc_api_pipe_send(state, ev, cli, &state->rpc_out,
|
|
DCERPC_PKT_BIND_ACK, state->rpc_call_id);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_pipe_bind_step_one_done, req);
|
|
return req;
|
|
}
|
|
|
|
static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_pipe_bind_state *state = tevent_req_data(
|
|
req, struct rpc_pipe_bind_state);
|
|
struct pipe_auth_data *pauth = state->cli->auth;
|
|
struct gensec_security *gensec_security;
|
|
struct ncacn_packet *pkt = NULL;
|
|
struct dcerpc_auth auth;
|
|
DATA_BLOB auth_token = { .data = NULL };
|
|
NTSTATUS status;
|
|
|
|
status = rpc_api_pipe_recv(subreq, talloc_tos(), &pkt, NULL);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
DEBUG(3, ("rpc_pipe_bind: %s bind request returned %s\n",
|
|
rpccli_pipe_txt(talloc_tos(), state->cli),
|
|
nt_errstr(status)));
|
|
return;
|
|
}
|
|
|
|
if (state->auth3) {
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
if (!check_bind_response(&pkt->u.bind_ack, &state->cli->transfer_syntax)) {
|
|
DEBUG(2, ("rpc_pipe_bind: check_bind_response failed.\n"));
|
|
tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
|
|
return;
|
|
}
|
|
|
|
if (pkt->ptype == DCERPC_PKT_BIND_ACK) {
|
|
if (pkt->pfc_flags & DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN) {
|
|
if (pauth->client_hdr_signing) {
|
|
pauth->hdr_signing = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
state->cli->max_xmit_frag = pkt->u.bind_ack.max_xmit_frag;
|
|
|
|
if (pauth->auth_type == DCERPC_AUTH_TYPE_NONE) {
|
|
/* Bind complete. */
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
if (pkt->auth_length == 0) {
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
/* get auth credentials */
|
|
status = dcerpc_pull_auth_trailer(pkt, talloc_tos(),
|
|
&pkt->u.bind_ack.auth_info,
|
|
&auth, NULL, true);
|
|
if (tevent_req_nterror(req, status)) {
|
|
DEBUG(0, ("Failed to pull dcerpc auth: %s.\n",
|
|
nt_errstr(status)));
|
|
return;
|
|
}
|
|
|
|
if (auth.auth_type != pauth->auth_type) {
|
|
DBG_ERR("Auth type %u mismatch expected %u.\n",
|
|
auth.auth_type, pauth->auth_type);
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (auth.auth_level != pauth->auth_level) {
|
|
DBG_ERR("Auth level %u mismatch expected %u.\n",
|
|
auth.auth_level, pauth->auth_level);
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
if (auth.auth_context_id != pauth->auth_context_id) {
|
|
DBG_ERR("Auth context id %"PRIu32" mismatch "
|
|
"expected %"PRIu32".\n",
|
|
auth.auth_context_id,
|
|
pauth->auth_context_id);
|
|
tevent_req_nterror(req, NT_STATUS_RPC_PROTOCOL_ERROR);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* For authenticated binds we may need to do 3 or 4 leg binds.
|
|
*/
|
|
|
|
if (pauth->auth_type == DCERPC_AUTH_TYPE_NONE) {
|
|
/* Bind complete. */
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
|
|
gensec_security = pauth->auth_ctx;
|
|
|
|
status = gensec_update(gensec_security, state,
|
|
auth.credentials, &auth_token);
|
|
if (NT_STATUS_EQUAL(status,
|
|
NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
status = rpc_bind_next_send(req, state,
|
|
&auth_token);
|
|
} else if (NT_STATUS_IS_OK(status)) {
|
|
if (pauth->hdr_signing) {
|
|
gensec_want_feature(gensec_security,
|
|
GENSEC_FEATURE_SIGN_PKT_HEADER);
|
|
}
|
|
|
|
if (auth_token.length == 0) {
|
|
/* Bind complete. */
|
|
tevent_req_done(req);
|
|
return;
|
|
}
|
|
status = rpc_bind_finish_send(req, state,
|
|
&auth_token);
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
tevent_req_nterror(req, status);
|
|
}
|
|
return;
|
|
}
|
|
|
|
static NTSTATUS rpc_bind_next_send(struct tevent_req *req,
|
|
struct rpc_pipe_bind_state *state,
|
|
DATA_BLOB *auth_token)
|
|
{
|
|
struct pipe_auth_data *auth = state->cli->auth;
|
|
struct tevent_req *subreq;
|
|
NTSTATUS status;
|
|
|
|
/* Now prepare the alter context pdu. */
|
|
data_blob_free(&state->rpc_out);
|
|
|
|
status = create_rpc_alter_context(state, auth,
|
|
state->rpc_call_id,
|
|
&state->cli->abstract_syntax,
|
|
&state->cli->transfer_syntax,
|
|
auth_token,
|
|
&state->rpc_out);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
subreq = rpc_api_pipe_send(state, state->ev, state->cli,
|
|
&state->rpc_out, DCERPC_PKT_ALTER_RESP,
|
|
state->rpc_call_id);
|
|
if (subreq == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_pipe_bind_step_one_done, req);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS rpc_bind_finish_send(struct tevent_req *req,
|
|
struct rpc_pipe_bind_state *state,
|
|
DATA_BLOB *auth_token)
|
|
{
|
|
struct pipe_auth_data *auth = state->cli->auth;
|
|
struct tevent_req *subreq;
|
|
NTSTATUS status;
|
|
|
|
state->auth3 = true;
|
|
|
|
/* Now prepare the auth3 context pdu. */
|
|
data_blob_free(&state->rpc_out);
|
|
|
|
status = create_rpc_bind_auth3(state, state->cli, auth,
|
|
state->rpc_call_id,
|
|
auth_token,
|
|
&state->rpc_out);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
subreq = rpc_api_pipe_send(state, state->ev, state->cli,
|
|
&state->rpc_out, DCERPC_PKT_AUTH3,
|
|
state->rpc_call_id);
|
|
if (subreq == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_pipe_bind_step_one_done, req);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS rpc_pipe_bind_recv(struct tevent_req *req)
|
|
{
|
|
return tevent_req_simple_recv_ntstatus(req);
|
|
}
|
|
|
|
NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
|
|
struct pipe_auth_data *auth)
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
struct tevent_context *ev;
|
|
struct tevent_req *req;
|
|
NTSTATUS status = NT_STATUS_OK;
|
|
|
|
ev = samba_tevent_context_init(frame);
|
|
if (ev == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
req = rpc_pipe_bind_send(frame, ev, cli, auth);
|
|
if (req == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = rpc_pipe_bind_recv(req);
|
|
fail:
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
#define RPCCLI_DEFAULT_TIMEOUT 10000 /* 10 seconds. */
|
|
|
|
unsigned int rpccli_set_timeout(struct rpc_pipe_client *rpc_cli,
|
|
unsigned int timeout)
|
|
{
|
|
if (rpc_cli == NULL) {
|
|
return RPCCLI_DEFAULT_TIMEOUT;
|
|
}
|
|
|
|
if (rpc_cli->binding_handle == NULL) {
|
|
return RPCCLI_DEFAULT_TIMEOUT;
|
|
}
|
|
|
|
return dcerpc_binding_handle_set_timeout(rpc_cli->binding_handle,
|
|
timeout);
|
|
}
|
|
|
|
bool rpccli_is_connected(struct rpc_pipe_client *rpc_cli)
|
|
{
|
|
if (rpc_cli == NULL) {
|
|
return false;
|
|
}
|
|
|
|
if (rpc_cli->binding_handle == NULL) {
|
|
return false;
|
|
}
|
|
|
|
return dcerpc_binding_handle_is_connected(rpc_cli->binding_handle);
|
|
}
|
|
|
|
struct rpccli_bh_state {
|
|
struct rpc_pipe_client *rpc_cli;
|
|
};
|
|
|
|
static bool rpccli_bh_is_connected(struct dcerpc_binding_handle *h)
|
|
{
|
|
struct rpccli_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct rpccli_bh_state);
|
|
struct rpc_cli_transport *transport = hs->rpc_cli->transport;
|
|
|
|
if (transport == NULL) {
|
|
return false;
|
|
}
|
|
|
|
if (transport->is_connected == NULL) {
|
|
return false;
|
|
}
|
|
|
|
return transport->is_connected(transport->priv);
|
|
}
|
|
|
|
static uint32_t rpccli_bh_set_timeout(struct dcerpc_binding_handle *h,
|
|
uint32_t timeout)
|
|
{
|
|
struct rpccli_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct rpccli_bh_state);
|
|
struct rpc_cli_transport *transport = hs->rpc_cli->transport;
|
|
unsigned int old;
|
|
|
|
if (transport == NULL) {
|
|
return RPCCLI_DEFAULT_TIMEOUT;
|
|
}
|
|
|
|
if (transport->set_timeout == NULL) {
|
|
return RPCCLI_DEFAULT_TIMEOUT;
|
|
}
|
|
|
|
old = transport->set_timeout(transport->priv, timeout);
|
|
if (old == 0) {
|
|
return RPCCLI_DEFAULT_TIMEOUT;
|
|
}
|
|
|
|
return old;
|
|
}
|
|
|
|
static void rpccli_bh_auth_info(struct dcerpc_binding_handle *h,
|
|
enum dcerpc_AuthType *auth_type,
|
|
enum dcerpc_AuthLevel *auth_level)
|
|
{
|
|
struct rpccli_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct rpccli_bh_state);
|
|
|
|
if (hs->rpc_cli == NULL) {
|
|
return;
|
|
}
|
|
|
|
if (hs->rpc_cli->auth == NULL) {
|
|
return;
|
|
}
|
|
|
|
*auth_type = hs->rpc_cli->auth->auth_type;
|
|
*auth_level = hs->rpc_cli->auth->auth_level;
|
|
}
|
|
|
|
struct rpccli_bh_raw_call_state {
|
|
DATA_BLOB in_data;
|
|
DATA_BLOB out_data;
|
|
uint32_t out_flags;
|
|
};
|
|
|
|
static void rpccli_bh_raw_call_done(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *rpccli_bh_raw_call_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct dcerpc_binding_handle *h,
|
|
const struct GUID *object,
|
|
uint32_t opnum,
|
|
uint32_t in_flags,
|
|
const uint8_t *in_data,
|
|
size_t in_length)
|
|
{
|
|
struct rpccli_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct rpccli_bh_state);
|
|
struct tevent_req *req;
|
|
struct rpccli_bh_raw_call_state *state;
|
|
bool ok;
|
|
struct tevent_req *subreq;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct rpccli_bh_raw_call_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->in_data.data = discard_const_p(uint8_t, in_data);
|
|
state->in_data.length = in_length;
|
|
|
|
ok = rpccli_bh_is_connected(h);
|
|
if (!ok) {
|
|
tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
subreq = rpc_api_pipe_req_send(state, ev, hs->rpc_cli,
|
|
opnum, object, &state->in_data);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpccli_bh_raw_call_done, req);
|
|
|
|
return req;
|
|
}
|
|
|
|
static void rpccli_bh_raw_call_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req =
|
|
tevent_req_callback_data(subreq,
|
|
struct tevent_req);
|
|
struct rpccli_bh_raw_call_state *state =
|
|
tevent_req_data(req,
|
|
struct rpccli_bh_raw_call_state);
|
|
NTSTATUS status;
|
|
|
|
state->out_flags = 0;
|
|
|
|
/* TODO: support bigendian responses */
|
|
|
|
status = rpc_api_pipe_req_recv(subreq, state, &state->out_data);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static NTSTATUS rpccli_bh_raw_call_recv(struct tevent_req *req,
|
|
TALLOC_CTX *mem_ctx,
|
|
uint8_t **out_data,
|
|
size_t *out_length,
|
|
uint32_t *out_flags)
|
|
{
|
|
struct rpccli_bh_raw_call_state *state =
|
|
tevent_req_data(req,
|
|
struct rpccli_bh_raw_call_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
*out_data = talloc_move(mem_ctx, &state->out_data.data);
|
|
*out_length = state->out_data.length;
|
|
*out_flags = state->out_flags;
|
|
tevent_req_received(req);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
struct rpccli_bh_disconnect_state {
|
|
uint8_t _dummy;
|
|
};
|
|
|
|
static struct tevent_req *rpccli_bh_disconnect_send(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct dcerpc_binding_handle *h)
|
|
{
|
|
struct rpccli_bh_state *hs = dcerpc_binding_handle_data(h,
|
|
struct rpccli_bh_state);
|
|
struct tevent_req *req;
|
|
struct rpccli_bh_disconnect_state *state;
|
|
bool ok;
|
|
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct rpccli_bh_disconnect_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
ok = rpccli_bh_is_connected(h);
|
|
if (!ok) {
|
|
tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
/*
|
|
* TODO: do a real async disconnect ...
|
|
*
|
|
* For now we do it sync...
|
|
*/
|
|
TALLOC_FREE(hs->rpc_cli->transport);
|
|
hs->rpc_cli = NULL;
|
|
|
|
tevent_req_done(req);
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
static NTSTATUS rpccli_bh_disconnect_recv(struct tevent_req *req)
|
|
{
|
|
return tevent_req_simple_recv_ntstatus(req);
|
|
}
|
|
|
|
static bool rpccli_bh_ref_alloc(struct dcerpc_binding_handle *h)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void rpccli_bh_do_ndr_print(struct dcerpc_binding_handle *h,
|
|
ndr_flags_type ndr_flags,
|
|
const void *_struct_ptr,
|
|
const struct ndr_interface_call *call)
|
|
{
|
|
void *struct_ptr = discard_const(_struct_ptr);
|
|
|
|
if (DEBUGLEVEL < 10) {
|
|
return;
|
|
}
|
|
|
|
if (ndr_flags & NDR_IN) {
|
|
ndr_print_function_debug(call->ndr_print,
|
|
call->name,
|
|
ndr_flags,
|
|
struct_ptr);
|
|
}
|
|
if (ndr_flags & NDR_OUT) {
|
|
ndr_print_function_debug(call->ndr_print,
|
|
call->name,
|
|
ndr_flags,
|
|
struct_ptr);
|
|
}
|
|
}
|
|
|
|
static const struct dcerpc_binding_handle_ops rpccli_bh_ops = {
|
|
.name = "rpccli",
|
|
.is_connected = rpccli_bh_is_connected,
|
|
.set_timeout = rpccli_bh_set_timeout,
|
|
.auth_info = rpccli_bh_auth_info,
|
|
.raw_call_send = rpccli_bh_raw_call_send,
|
|
.raw_call_recv = rpccli_bh_raw_call_recv,
|
|
.disconnect_send = rpccli_bh_disconnect_send,
|
|
.disconnect_recv = rpccli_bh_disconnect_recv,
|
|
|
|
.ref_alloc = rpccli_bh_ref_alloc,
|
|
.do_ndr_print = rpccli_bh_do_ndr_print,
|
|
};
|
|
|
|
/* initialise a rpc_pipe_client binding handle */
|
|
struct dcerpc_binding_handle *rpccli_bh_create(struct rpc_pipe_client *c,
|
|
const struct GUID *object,
|
|
const struct ndr_interface_table *table)
|
|
{
|
|
struct dcerpc_binding_handle *h;
|
|
struct rpccli_bh_state *hs;
|
|
|
|
h = dcerpc_binding_handle_create(c,
|
|
&rpccli_bh_ops,
|
|
object,
|
|
table,
|
|
&hs,
|
|
struct rpccli_bh_state,
|
|
__location__);
|
|
if (h == NULL) {
|
|
return NULL;
|
|
}
|
|
hs->rpc_cli = c;
|
|
|
|
return h;
|
|
}
|
|
|
|
NTSTATUS rpccli_anon_bind_data(TALLOC_CTX *mem_ctx,
|
|
struct pipe_auth_data **presult)
|
|
{
|
|
struct pipe_auth_data *result;
|
|
struct auth_generic_state *auth_generic_ctx;
|
|
NTSTATUS status;
|
|
|
|
result = talloc_zero(mem_ctx, struct pipe_auth_data);
|
|
if (result == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
result->auth_type = DCERPC_AUTH_TYPE_NONE;
|
|
result->auth_level = DCERPC_AUTH_LEVEL_NONE;
|
|
result->auth_context_id = 0;
|
|
|
|
status = auth_generic_client_prepare(result,
|
|
&auth_generic_ctx);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("Failed to create auth_generic context: %s\n",
|
|
nt_errstr(status)));
|
|
}
|
|
|
|
status = auth_generic_set_username(auth_generic_ctx, "");
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("Failed to set username: %s\n",
|
|
nt_errstr(status)));
|
|
}
|
|
|
|
status = auth_generic_set_domain(auth_generic_ctx, "");
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("Failed to set domain: %s\n",
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
|
|
status = gensec_set_credentials(auth_generic_ctx->gensec_security,
|
|
auth_generic_ctx->credentials);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
talloc_unlink(auth_generic_ctx, auth_generic_ctx->credentials);
|
|
auth_generic_ctx->credentials = NULL;
|
|
|
|
result->auth_ctx = talloc_move(result, &auth_generic_ctx->gensec_security);
|
|
talloc_free(auth_generic_ctx);
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
static NTSTATUS rpccli_generic_bind_data(TALLOC_CTX *mem_ctx,
|
|
enum dcerpc_AuthType auth_type,
|
|
enum dcerpc_AuthLevel auth_level,
|
|
const char *server,
|
|
const char *target_service,
|
|
const char *domain,
|
|
const char *username,
|
|
const char *password,
|
|
enum credentials_use_kerberos use_kerberos,
|
|
struct netlogon_creds_CredentialState *creds,
|
|
struct pipe_auth_data **presult)
|
|
{
|
|
struct auth_generic_state *auth_generic_ctx;
|
|
struct pipe_auth_data *result;
|
|
NTSTATUS status;
|
|
|
|
result = talloc_zero(mem_ctx, struct pipe_auth_data);
|
|
if (result == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
result->auth_type = auth_type;
|
|
result->auth_level = auth_level;
|
|
result->auth_context_id = 1;
|
|
|
|
status = auth_generic_client_prepare(result,
|
|
&auth_generic_ctx);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = auth_generic_set_username(auth_generic_ctx, username);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = auth_generic_set_domain(auth_generic_ctx, domain);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = auth_generic_set_password(auth_generic_ctx, password);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = gensec_set_target_service(auth_generic_ctx->gensec_security, target_service);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = gensec_set_target_hostname(auth_generic_ctx->gensec_security, server);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
cli_credentials_set_kerberos_state(auth_generic_ctx->credentials,
|
|
use_kerberos,
|
|
CRED_SPECIFIED);
|
|
cli_credentials_set_netlogon_creds(auth_generic_ctx->credentials, creds);
|
|
|
|
status = auth_generic_client_start_by_authtype(auth_generic_ctx, auth_type, auth_level);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
result->auth_ctx = talloc_move(result, &auth_generic_ctx->gensec_security);
|
|
talloc_free(auth_generic_ctx);
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
/* This routine steals the creds pointer that is passed in */
|
|
static NTSTATUS rpccli_generic_bind_data_from_creds(TALLOC_CTX *mem_ctx,
|
|
enum dcerpc_AuthType auth_type,
|
|
enum dcerpc_AuthLevel auth_level,
|
|
const char *server,
|
|
const char *target_service,
|
|
struct cli_credentials *creds,
|
|
struct pipe_auth_data **presult)
|
|
{
|
|
struct auth_generic_state *auth_generic_ctx;
|
|
struct pipe_auth_data *result;
|
|
NTSTATUS status;
|
|
|
|
result = talloc_zero(mem_ctx, struct pipe_auth_data);
|
|
if (result == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
result->auth_type = auth_type;
|
|
result->auth_level = auth_level;
|
|
result->auth_context_id = 1;
|
|
|
|
status = auth_generic_client_prepare(result,
|
|
&auth_generic_ctx);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = auth_generic_set_creds(auth_generic_ctx, creds);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = gensec_set_target_service(auth_generic_ctx->gensec_security, target_service);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = gensec_set_target_hostname(auth_generic_ctx->gensec_security, server);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
status = auth_generic_client_start_by_authtype(auth_generic_ctx, auth_type, auth_level);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
|
|
result->auth_ctx = talloc_move(result, &auth_generic_ctx->gensec_security);
|
|
talloc_free(auth_generic_ctx);
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS rpccli_ncalrpc_bind_data(TALLOC_CTX *mem_ctx,
|
|
struct pipe_auth_data **presult)
|
|
{
|
|
return rpccli_generic_bind_data(mem_ctx,
|
|
DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM,
|
|
DCERPC_AUTH_LEVEL_CONNECT,
|
|
NULL, /* server */
|
|
"host", /* target_service */
|
|
NAME_NT_AUTHORITY, /* domain */
|
|
"SYSTEM",
|
|
NULL, /* password */
|
|
CRED_USE_KERBEROS_DISABLED,
|
|
NULL, /* netlogon_creds_CredentialState */
|
|
presult);
|
|
}
|
|
|
|
/**
|
|
* Create an rpc pipe client struct, connecting to a tcp port.
|
|
*/
|
|
static NTSTATUS rpc_pipe_open_tcp_port(TALLOC_CTX *mem_ctx, const char *host,
|
|
const struct sockaddr_storage *ss_addr,
|
|
uint16_t port,
|
|
const struct ndr_interface_table *table,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
struct rpc_pipe_client *result;
|
|
struct sockaddr_storage addr;
|
|
NTSTATUS status;
|
|
int fd;
|
|
|
|
result = talloc_zero(mem_ctx, struct rpc_pipe_client);
|
|
if (result == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
result->abstract_syntax = table->syntax_id;
|
|
result->transfer_syntax = ndr_transfer_syntax_ndr;
|
|
|
|
result->desthost = talloc_strdup(result, host);
|
|
if (result->desthost == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
result->srv_name_slash = talloc_asprintf_strupper_m(
|
|
result, "\\\\%s", result->desthost);
|
|
if (result->srv_name_slash == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
|
|
|
|
if (ss_addr == NULL) {
|
|
if (!resolve_name(host, &addr, NBT_NAME_SERVER, false)) {
|
|
status = NT_STATUS_NOT_FOUND;
|
|
goto fail;
|
|
}
|
|
} else {
|
|
addr = *ss_addr;
|
|
}
|
|
|
|
status = open_socket_out(&addr, port, 60*1000, &fd);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
set_socket_options(fd, lp_socket_options());
|
|
|
|
status = rpc_transport_sock_init(result, fd, &result->transport);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
close(fd);
|
|
goto fail;
|
|
}
|
|
|
|
result->transport->transport = NCACN_IP_TCP;
|
|
|
|
result->binding_handle = rpccli_bh_create(result, NULL, table);
|
|
if (result->binding_handle == NULL) {
|
|
TALLOC_FREE(result);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS rpccli_epm_map_binding(
|
|
struct dcerpc_binding_handle *epm_connection,
|
|
struct dcerpc_binding *binding,
|
|
TALLOC_CTX *mem_ctx,
|
|
char **pendpoint)
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
enum dcerpc_transport_t transport =
|
|
dcerpc_binding_get_transport(binding);
|
|
enum dcerpc_transport_t res_transport;
|
|
struct dcerpc_binding *res_binding = NULL;
|
|
struct epm_twr_t *map_tower = NULL;
|
|
struct epm_twr_p_t res_towers = { .twr = NULL };
|
|
struct policy_handle *entry_handle = NULL;
|
|
uint32_t num_towers = 0;
|
|
const uint32_t max_towers = 1;
|
|
const char *endpoint = NULL;
|
|
char *tmp = NULL;
|
|
uint32_t result;
|
|
NTSTATUS status;
|
|
|
|
map_tower = talloc_zero(frame, struct epm_twr_t);
|
|
if (map_tower == NULL) {
|
|
goto nomem;
|
|
}
|
|
|
|
status = dcerpc_binding_build_tower(
|
|
frame, binding, &(map_tower->tower));
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("dcerpc_binding_build_tower failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
res_towers.twr = talloc_array(frame, struct epm_twr_t, max_towers);
|
|
if (res_towers.twr == NULL) {
|
|
goto nomem;
|
|
}
|
|
|
|
entry_handle = talloc_zero(frame, struct policy_handle);
|
|
if (entry_handle == NULL) {
|
|
goto nomem;
|
|
}
|
|
|
|
status = dcerpc_epm_Map(
|
|
epm_connection,
|
|
frame,
|
|
NULL,
|
|
map_tower,
|
|
entry_handle,
|
|
max_towers,
|
|
&num_towers,
|
|
&res_towers,
|
|
&result);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("dcerpc_epm_Map failed: %s\n", nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
if (result != EPMAPPER_STATUS_OK) {
|
|
DBG_DEBUG("dcerpc_epm_Map returned %"PRIu32"\n", result);
|
|
status = NT_STATUS_NOT_FOUND;
|
|
goto done;
|
|
}
|
|
|
|
if (num_towers != 1) {
|
|
DBG_DEBUG("dcerpc_epm_Map returned %"PRIu32" towers\n",
|
|
num_towers);
|
|
status = NT_STATUS_INVALID_NETWORK_RESPONSE;
|
|
goto done;
|
|
}
|
|
|
|
status = dcerpc_binding_from_tower(
|
|
frame, &(res_towers.twr->tower), &res_binding);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("dcerpc_binding_from_tower failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
res_transport = dcerpc_binding_get_transport(res_binding);
|
|
if (res_transport != transport) {
|
|
DBG_DEBUG("dcerpc_epm_Map returned transport %d, "
|
|
"expected %d\n",
|
|
(int)res_transport,
|
|
(int)transport);
|
|
status = NT_STATUS_INVALID_NETWORK_RESPONSE;
|
|
goto done;
|
|
}
|
|
|
|
endpoint = dcerpc_binding_get_string_option(res_binding, "endpoint");
|
|
if (endpoint == NULL) {
|
|
DBG_DEBUG("dcerpc_epm_Map returned no endpoint\n");
|
|
status = NT_STATUS_INVALID_NETWORK_RESPONSE;
|
|
goto done;
|
|
}
|
|
|
|
tmp = talloc_strdup(mem_ctx, endpoint);
|
|
if (tmp == NULL) {
|
|
goto nomem;
|
|
}
|
|
*pendpoint = tmp;
|
|
|
|
status = NT_STATUS_OK;
|
|
goto done;
|
|
|
|
nomem:
|
|
status = NT_STATUS_NO_MEMORY;
|
|
done:
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
static NTSTATUS rpccli_epm_map_interface(
|
|
struct dcerpc_binding_handle *epm_connection,
|
|
enum dcerpc_transport_t transport,
|
|
const struct ndr_syntax_id *iface,
|
|
TALLOC_CTX *mem_ctx,
|
|
char **pendpoint)
|
|
{
|
|
struct dcerpc_binding *binding = NULL;
|
|
char *endpoint = NULL;
|
|
NTSTATUS status;
|
|
|
|
status = dcerpc_parse_binding(mem_ctx, "", &binding);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("dcerpc_parse_binding failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
status = dcerpc_binding_set_transport(binding, transport);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("dcerpc_binding_set_transport failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
status = dcerpc_binding_set_abstract_syntax(binding, iface);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("dcerpc_binding_set_abstract_syntax failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
status = rpccli_epm_map_binding(
|
|
epm_connection, binding, mem_ctx, &endpoint);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpccli_epm_map_binding failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
*pendpoint = endpoint;
|
|
|
|
done:
|
|
TALLOC_FREE(binding);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* Determine the tcp port on which a dcerpc interface is listening
|
|
* for the ncacn_ip_tcp transport via the endpoint mapper of the
|
|
* target host.
|
|
*/
|
|
static NTSTATUS rpc_pipe_get_tcp_port(const char *host,
|
|
const struct sockaddr_storage *addr,
|
|
const struct ndr_interface_table *table,
|
|
uint16_t *pport)
|
|
{
|
|
NTSTATUS status;
|
|
struct rpc_pipe_client *epm_pipe = NULL;
|
|
struct pipe_auth_data *auth = NULL;
|
|
char *endpoint = NULL;
|
|
TALLOC_CTX *tmp_ctx = talloc_stackframe();
|
|
|
|
if (pport == NULL) {
|
|
status = NT_STATUS_INVALID_PARAMETER;
|
|
goto done;
|
|
}
|
|
|
|
if (ndr_syntax_id_equal(&table->syntax_id,
|
|
&ndr_table_epmapper.syntax_id)) {
|
|
*pport = 135;
|
|
status = NT_STATUS_OK;
|
|
goto done;
|
|
}
|
|
|
|
/* open the connection to the endpoint mapper */
|
|
status = rpc_pipe_open_tcp_port(tmp_ctx, host, addr, 135,
|
|
&ndr_table_epmapper,
|
|
&epm_pipe);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto done;
|
|
}
|
|
|
|
status = rpccli_anon_bind_data(tmp_ctx, &auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto done;
|
|
}
|
|
|
|
status = rpc_pipe_bind(epm_pipe, auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto done;
|
|
}
|
|
|
|
status = rpccli_epm_map_interface(
|
|
epm_pipe->binding_handle,
|
|
NCACN_IP_TCP,
|
|
&table->syntax_id,
|
|
tmp_ctx,
|
|
&endpoint);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpccli_epm_map_interface failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
*pport = (uint16_t)atoi(endpoint);
|
|
|
|
done:
|
|
TALLOC_FREE(tmp_ctx);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* Create a rpc pipe client struct, connecting to a host via tcp.
|
|
* The port is determined by asking the endpoint mapper on the given
|
|
* host.
|
|
*/
|
|
static NTSTATUS rpc_pipe_open_tcp(
|
|
TALLOC_CTX *mem_ctx,
|
|
const char *host,
|
|
const struct sockaddr_storage *addr,
|
|
const struct ndr_interface_table *table,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
NTSTATUS status;
|
|
uint16_t port = 0;
|
|
|
|
status = rpc_pipe_get_tcp_port(host, addr, table, &port);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
return rpc_pipe_open_tcp_port(mem_ctx, host, addr, port,
|
|
table, presult);
|
|
}
|
|
|
|
static NTSTATUS rpc_pipe_get_ncalrpc_name(
|
|
const struct ndr_syntax_id *iface,
|
|
TALLOC_CTX *mem_ctx,
|
|
char **psocket_name)
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
struct rpc_pipe_client *epm_pipe = NULL;
|
|
struct pipe_auth_data *auth = NULL;
|
|
NTSTATUS status = NT_STATUS_OK;
|
|
bool is_epm;
|
|
|
|
is_epm = ndr_syntax_id_equal(iface, &ndr_table_epmapper.syntax_id);
|
|
if (is_epm) {
|
|
char *endpoint = talloc_strdup(mem_ctx, "EPMAPPER");
|
|
if (endpoint == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto done;
|
|
}
|
|
*psocket_name = endpoint;
|
|
goto done;
|
|
}
|
|
|
|
status = rpc_pipe_open_ncalrpc(
|
|
frame, &ndr_table_epmapper, &epm_pipe);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpc_pipe_open_ncalrpc failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
status = rpccli_anon_bind_data(epm_pipe, &auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpccli_anon_bind_data failed: %s\n",
|
|
nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
status = rpc_pipe_bind(epm_pipe, auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpc_pipe_bind failed: %s\n", nt_errstr(status));
|
|
goto done;
|
|
}
|
|
|
|
status = rpccli_epm_map_interface(
|
|
epm_pipe->binding_handle,
|
|
NCALRPC,
|
|
iface,
|
|
mem_ctx,
|
|
psocket_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpccli_epm_map_interface failed: %s\n",
|
|
nt_errstr(status));
|
|
}
|
|
|
|
done:
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
/********************************************************************
|
|
Create a rpc pipe client struct, connecting to a unix domain socket
|
|
********************************************************************/
|
|
NTSTATUS rpc_pipe_open_ncalrpc(TALLOC_CTX *mem_ctx,
|
|
const struct ndr_interface_table *table,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
char *socket_name = NULL;
|
|
struct rpc_pipe_client *result;
|
|
struct sockaddr_un addr = { .sun_family = AF_UNIX };
|
|
socklen_t salen = sizeof(addr);
|
|
int pathlen;
|
|
NTSTATUS status;
|
|
int fd = -1;
|
|
|
|
result = talloc_zero(mem_ctx, struct rpc_pipe_client);
|
|
if (result == NULL) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
status = rpc_pipe_get_ncalrpc_name(
|
|
&table->syntax_id, result, &socket_name);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpc_pipe_get_ncalrpc_name failed: %s\n",
|
|
nt_errstr(status));
|
|
goto fail;
|
|
}
|
|
|
|
pathlen = snprintf(
|
|
addr.sun_path,
|
|
sizeof(addr.sun_path),
|
|
"%s/%s",
|
|
lp_ncalrpc_dir(),
|
|
socket_name);
|
|
if ((pathlen < 0) || ((size_t)pathlen >= sizeof(addr.sun_path))) {
|
|
DBG_DEBUG("socket_path for %s too long\n", socket_name);
|
|
status = NT_STATUS_NAME_TOO_LONG;
|
|
goto fail;
|
|
}
|
|
TALLOC_FREE(socket_name);
|
|
|
|
result->abstract_syntax = table->syntax_id;
|
|
result->transfer_syntax = ndr_transfer_syntax_ndr;
|
|
|
|
result->desthost = get_myname(result);
|
|
if (result->desthost == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
result->srv_name_slash = talloc_asprintf_strupper_m(
|
|
result, "\\\\%s", result->desthost);
|
|
if (result->srv_name_slash == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
|
|
|
|
fd = socket(AF_UNIX, SOCK_STREAM, 0);
|
|
if (fd == -1) {
|
|
status = map_nt_error_from_unix(errno);
|
|
goto fail;
|
|
}
|
|
|
|
if (connect(fd, (struct sockaddr *)(void *)&addr, salen) == -1) {
|
|
DBG_WARNING("connect(%s) failed: %s\n",
|
|
addr.sun_path,
|
|
strerror(errno));
|
|
status = map_nt_error_from_unix(errno);
|
|
goto fail;
|
|
}
|
|
|
|
status = rpc_transport_sock_init(result, fd, &result->transport);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
goto fail;
|
|
}
|
|
fd = -1;
|
|
|
|
result->transport->transport = NCALRPC;
|
|
|
|
result->binding_handle = rpccli_bh_create(result, NULL, table);
|
|
if (result->binding_handle == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
goto fail;
|
|
}
|
|
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
if (fd != -1) {
|
|
close(fd);
|
|
}
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS rpc_pipe_open_local_np(
|
|
TALLOC_CTX *mem_ctx,
|
|
const struct ndr_interface_table *table,
|
|
const char *remote_client_name,
|
|
const struct tsocket_address *remote_client_addr,
|
|
const char *local_server_name,
|
|
const struct tsocket_address *local_server_addr,
|
|
const struct auth_session_info *session_info,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
struct rpc_pipe_client *result = NULL;
|
|
struct pipe_auth_data *auth = NULL;
|
|
const char *pipe_name = NULL;
|
|
struct tstream_context *npa_stream = NULL;
|
|
NTSTATUS status = NT_STATUS_NO_MEMORY;
|
|
int ret;
|
|
|
|
result = talloc_zero(mem_ctx, struct rpc_pipe_client);
|
|
if (result == NULL) {
|
|
goto fail;
|
|
}
|
|
result->abstract_syntax = table->syntax_id;
|
|
result->transfer_syntax = ndr_transfer_syntax_ndr;
|
|
result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
|
|
|
|
pipe_name = dcerpc_default_transport_endpoint(
|
|
result, NCACN_NP, table);
|
|
if (pipe_name == NULL) {
|
|
DBG_DEBUG("dcerpc_default_transport_endpoint failed\n");
|
|
status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
goto fail;
|
|
}
|
|
|
|
if (local_server_name == NULL) {
|
|
result->desthost = get_myname(result);
|
|
} else {
|
|
result->desthost = talloc_strdup(result, local_server_name);
|
|
}
|
|
if (result->desthost == NULL) {
|
|
goto fail;
|
|
}
|
|
result->srv_name_slash = talloc_asprintf_strupper_m(
|
|
result, "\\\\%s", result->desthost);
|
|
if (result->srv_name_slash == NULL) {
|
|
goto fail;
|
|
}
|
|
|
|
ret = local_np_connect(
|
|
pipe_name,
|
|
NCALRPC,
|
|
remote_client_name,
|
|
remote_client_addr,
|
|
local_server_name,
|
|
local_server_addr,
|
|
session_info,
|
|
true,
|
|
result,
|
|
&npa_stream);
|
|
if (ret != 0) {
|
|
DBG_DEBUG("local_np_connect for %s and "
|
|
"user %s\\%s failed: %s\n",
|
|
pipe_name,
|
|
session_info->info->domain_name,
|
|
session_info->info->account_name,
|
|
strerror(ret));
|
|
status = map_nt_error_from_unix(ret);
|
|
goto fail;
|
|
}
|
|
|
|
status = rpc_transport_tstream_init(
|
|
result, &npa_stream, &result->transport);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpc_transport_tstream_init failed: %s\n",
|
|
nt_errstr(status));
|
|
goto fail;
|
|
}
|
|
|
|
result->binding_handle = rpccli_bh_create(result, NULL, table);
|
|
if (result->binding_handle == NULL) {
|
|
status = NT_STATUS_NO_MEMORY;
|
|
DBG_DEBUG("Failed to create binding handle.\n");
|
|
goto fail;
|
|
}
|
|
|
|
status = rpccli_anon_bind_data(result, &auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpccli_anon_bind_data failed: %s\n",
|
|
nt_errstr(status));
|
|
goto fail;
|
|
}
|
|
|
|
status = rpc_pipe_bind(result, auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpc_pipe_bind failed: %s\n", nt_errstr(status));
|
|
goto fail;
|
|
}
|
|
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
|
|
fail:
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
struct rpc_pipe_client_np_ref {
|
|
struct cli_state *cli;
|
|
struct rpc_pipe_client *pipe;
|
|
};
|
|
|
|
static int rpc_pipe_client_np_ref_destructor(struct rpc_pipe_client_np_ref *np_ref)
|
|
{
|
|
DLIST_REMOVE(np_ref->cli->pipe_list, np_ref->pipe);
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a named pipe over SMB to a remote server.
|
|
*
|
|
* CAVEAT CALLER OF THIS FUNCTION:
|
|
* The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
|
|
* so be sure that this function is called AFTER any structure (vs pointer)
|
|
* assignment of the cli. In particular, libsmbclient does structure
|
|
* assignments of cli, which invalidates the data in the returned
|
|
* rpc_pipe_client if this function is called before the structure assignment
|
|
* of cli.
|
|
*
|
|
****************************************************************************/
|
|
|
|
struct rpc_pipe_open_np_state {
|
|
struct cli_state *cli;
|
|
const struct ndr_interface_table *table;
|
|
struct rpc_pipe_client *result;
|
|
};
|
|
|
|
static void rpc_pipe_open_np_done(struct tevent_req *subreq);
|
|
|
|
struct tevent_req *rpc_pipe_open_np_send(
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct cli_state *cli,
|
|
const struct ndr_interface_table *table)
|
|
{
|
|
struct tevent_req *req = NULL, *subreq = NULL;
|
|
struct rpc_pipe_open_np_state *state = NULL;
|
|
struct rpc_pipe_client *result = NULL;
|
|
|
|
req = tevent_req_create(
|
|
mem_ctx, &state, struct rpc_pipe_open_np_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
state->cli = cli;
|
|
state->table = table;
|
|
|
|
state->result = talloc_zero(state, struct rpc_pipe_client);
|
|
if (tevent_req_nomem(state->result, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
result = state->result;
|
|
|
|
result->abstract_syntax = table->syntax_id;
|
|
result->transfer_syntax = ndr_transfer_syntax_ndr;
|
|
|
|
result->desthost = talloc_strdup(
|
|
result, smbXcli_conn_remote_name(cli->conn));
|
|
if (tevent_req_nomem(result->desthost, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
result->srv_name_slash = talloc_asprintf_strupper_m(
|
|
result, "\\\\%s", result->desthost);
|
|
if (tevent_req_nomem(result->srv_name_slash, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
|
|
|
|
subreq = rpc_transport_np_init_send(state, ev, cli, table);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, rpc_pipe_open_np_done, req);
|
|
return req;
|
|
}
|
|
|
|
static void rpc_pipe_open_np_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct rpc_pipe_open_np_state *state = tevent_req_data(
|
|
req, struct rpc_pipe_open_np_state);
|
|
struct rpc_pipe_client *result = state->result;
|
|
struct rpc_pipe_client_np_ref *np_ref = NULL;
|
|
NTSTATUS status;
|
|
|
|
status = rpc_transport_np_init_recv(
|
|
subreq, result, &result->transport);
|
|
TALLOC_FREE(subreq);
|
|
if (tevent_req_nterror(req, status)) {
|
|
return;
|
|
}
|
|
|
|
result->transport->transport = NCACN_NP;
|
|
|
|
np_ref = talloc(result->transport, struct rpc_pipe_client_np_ref);
|
|
if (tevent_req_nomem(np_ref, req)) {
|
|
return;
|
|
}
|
|
np_ref->cli = state->cli;
|
|
np_ref->pipe = result;
|
|
|
|
DLIST_ADD(np_ref->cli->pipe_list, np_ref->pipe);
|
|
talloc_set_destructor(np_ref, rpc_pipe_client_np_ref_destructor);
|
|
|
|
result->binding_handle = rpccli_bh_create(result, NULL, state->table);
|
|
if (tevent_req_nomem(result->binding_handle, req)) {
|
|
return;
|
|
}
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
NTSTATUS rpc_pipe_open_np_recv(
|
|
struct tevent_req *req,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct rpc_pipe_client **_result)
|
|
{
|
|
struct rpc_pipe_open_np_state *state = tevent_req_data(
|
|
req, struct rpc_pipe_open_np_state);
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
return status;
|
|
}
|
|
*_result = talloc_move(mem_ctx, &state->result);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS rpc_pipe_open_np(struct cli_state *cli,
|
|
const struct ndr_interface_table *table,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
struct tevent_context *ev = NULL;
|
|
struct tevent_req *req = NULL;
|
|
NTSTATUS status = NT_STATUS_NO_MEMORY;
|
|
|
|
ev = samba_tevent_context_init(cli);
|
|
if (ev == NULL) {
|
|
goto fail;
|
|
}
|
|
req = rpc_pipe_open_np_send(ev, ev, cli, table);
|
|
if (req == NULL) {
|
|
goto fail;
|
|
}
|
|
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
|
|
goto fail;
|
|
}
|
|
status = rpc_pipe_open_np_recv(req, NULL, presult);
|
|
fail:
|
|
TALLOC_FREE(req);
|
|
TALLOC_FREE(ev);
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a pipe to a remote server.
|
|
****************************************************************************/
|
|
|
|
static NTSTATUS cli_rpc_pipe_open(struct cli_state *cli,
|
|
enum dcerpc_transport_t transport,
|
|
const struct ndr_interface_table *table,
|
|
const char *remote_name,
|
|
const struct sockaddr_storage *remote_sockaddr,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
switch (transport) {
|
|
case NCACN_IP_TCP:
|
|
return rpc_pipe_open_tcp(NULL,
|
|
remote_name,
|
|
remote_sockaddr,
|
|
table, presult);
|
|
case NCACN_NP:
|
|
return rpc_pipe_open_np(cli, table, presult);
|
|
default:
|
|
return NT_STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a named pipe to an SMB server and bind anonymously.
|
|
****************************************************************************/
|
|
|
|
NTSTATUS cli_rpc_pipe_open_noauth_transport(struct cli_state *cli,
|
|
enum dcerpc_transport_t transport,
|
|
const struct ndr_interface_table *table,
|
|
const char *remote_name,
|
|
const struct sockaddr_storage *remote_sockaddr,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
struct rpc_pipe_client *result;
|
|
struct pipe_auth_data *auth;
|
|
NTSTATUS status;
|
|
|
|
status = cli_rpc_pipe_open(cli,
|
|
transport,
|
|
table,
|
|
remote_name,
|
|
remote_sockaddr,
|
|
&result);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
status = rpccli_anon_bind_data(result, &auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("rpccli_anon_bind_data returned %s\n",
|
|
nt_errstr(status)));
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* This is a bit of an abstraction violation due to the fact that an
|
|
* anonymous bind on an authenticated SMB inherits the user/domain
|
|
* from the enclosing SMB creds
|
|
*/
|
|
|
|
if (transport == NCACN_NP) {
|
|
struct smbXcli_session *session;
|
|
|
|
if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
|
|
session = cli->smb2.session;
|
|
} else {
|
|
session = cli->smb1.session;
|
|
}
|
|
|
|
status = smbXcli_session_application_key(session, auth,
|
|
&auth->transport_session_key);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
auth->transport_session_key = data_blob_null;
|
|
}
|
|
}
|
|
|
|
status = rpc_pipe_bind(result, auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
int lvl = 0;
|
|
if (ndr_syntax_id_equal(&table->syntax_id,
|
|
&ndr_table_dssetup.syntax_id)) {
|
|
/* non AD domains just don't have this pipe, avoid
|
|
* level 0 statement in that case - gd */
|
|
lvl = 3;
|
|
}
|
|
DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe "
|
|
"%s failed with error %s\n",
|
|
table->name,
|
|
nt_errstr(status) ));
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine "
|
|
"%s and bound anonymously.\n",
|
|
table->name,
|
|
result->desthost));
|
|
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
****************************************************************************/
|
|
|
|
NTSTATUS cli_rpc_pipe_open_noauth(struct cli_state *cli,
|
|
const struct ndr_interface_table *table,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
const char *remote_name = smbXcli_conn_remote_name(cli->conn);
|
|
const struct sockaddr_storage *remote_sockaddr =
|
|
smbXcli_conn_remote_sockaddr(cli->conn);
|
|
|
|
return cli_rpc_pipe_open_noauth_transport(cli, NCACN_NP,
|
|
table,
|
|
remote_name,
|
|
remote_sockaddr,
|
|
presult);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Open a named pipe to an SMB server and bind using the mech specified
|
|
|
|
This routine references the creds pointer that is passed in
|
|
****************************************************************************/
|
|
|
|
NTSTATUS cli_rpc_pipe_open_with_creds(struct cli_state *cli,
|
|
const struct ndr_interface_table *table,
|
|
enum dcerpc_transport_t transport,
|
|
enum dcerpc_AuthType auth_type,
|
|
enum dcerpc_AuthLevel auth_level,
|
|
const char *server,
|
|
const struct sockaddr_storage *remote_sockaddr,
|
|
struct cli_credentials *creds,
|
|
struct rpc_pipe_client **presult)
|
|
{
|
|
struct rpc_pipe_client *result;
|
|
struct pipe_auth_data *auth = NULL;
|
|
const char *target_service = table->authservices->names[0];
|
|
NTSTATUS status;
|
|
|
|
status = cli_rpc_pipe_open(cli,
|
|
transport,
|
|
table,
|
|
server,
|
|
remote_sockaddr,
|
|
&result);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
status = rpccli_generic_bind_data_from_creds(result,
|
|
auth_type, auth_level,
|
|
server, target_service,
|
|
creds,
|
|
&auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_ERR("rpccli_generic_bind_data_from_creds returned %s\n",
|
|
nt_errstr(status));
|
|
goto err;
|
|
}
|
|
|
|
status = rpc_pipe_bind(result, auth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_ERR("cli_rpc_pipe_bind failed with error %s\n",
|
|
nt_errstr(status));
|
|
goto err;
|
|
}
|
|
|
|
DBG_DEBUG("opened pipe %s to machine %s and bound as user %s.\n",
|
|
table->name,
|
|
result->desthost,
|
|
cli_credentials_get_unparsed_name(creds, talloc_tos()));
|
|
|
|
*presult = result;
|
|
return NT_STATUS_OK;
|
|
|
|
err:
|
|
|
|
TALLOC_FREE(result);
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS cli_rpc_pipe_open_bind_schannel(
|
|
struct cli_state *cli,
|
|
const struct ndr_interface_table *table,
|
|
enum dcerpc_transport_t transport,
|
|
struct netlogon_creds_cli_context *netlogon_creds,
|
|
const char *remote_name,
|
|
const struct sockaddr_storage *remote_sockaddr,
|
|
struct rpc_pipe_client **_rpccli)
|
|
{
|
|
struct rpc_pipe_client *rpccli;
|
|
struct pipe_auth_data *rpcauth;
|
|
const char *target_service = table->authservices->names[0];
|
|
struct cli_credentials *cli_creds;
|
|
enum dcerpc_AuthLevel auth_level;
|
|
NTSTATUS status;
|
|
|
|
status = cli_rpc_pipe_open(cli,
|
|
transport,
|
|
table,
|
|
remote_name,
|
|
remote_sockaddr,
|
|
&rpccli);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
auth_level = netlogon_creds_cli_auth_level(netlogon_creds);
|
|
|
|
status = netlogon_creds_bind_cli_credentials(
|
|
netlogon_creds, rpccli, &cli_creds);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("netlogon_creds_bind_cli_credentials failed: %s\n",
|
|
nt_errstr(status));
|
|
TALLOC_FREE(rpccli);
|
|
return status;
|
|
}
|
|
|
|
status = rpccli_generic_bind_data_from_creds(rpccli,
|
|
DCERPC_AUTH_TYPE_SCHANNEL,
|
|
auth_level,
|
|
rpccli->desthost,
|
|
target_service,
|
|
cli_creds,
|
|
&rpcauth);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("rpccli_generic_bind_data_from_creds returned %s\n",
|
|
nt_errstr(status)));
|
|
TALLOC_FREE(rpccli);
|
|
return status;
|
|
}
|
|
|
|
status = rpc_pipe_bind(rpccli, rpcauth);
|
|
|
|
/* No TALLOC_FREE, gensec takes references */
|
|
talloc_unlink(rpccli, cli_creds);
|
|
cli_creds = NULL;
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("rpc_pipe_bind failed with error %s\n",
|
|
nt_errstr(status));
|
|
TALLOC_FREE(rpccli);
|
|
return status;
|
|
}
|
|
|
|
*_rpccli = rpccli;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS cli_rpc_pipe_open_schannel_with_creds(struct cli_state *cli,
|
|
const struct ndr_interface_table *table,
|
|
enum dcerpc_transport_t transport,
|
|
struct netlogon_creds_cli_context *netlogon_creds,
|
|
const char *remote_name,
|
|
const struct sockaddr_storage *remote_sockaddr,
|
|
struct rpc_pipe_client **_rpccli)
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
struct rpc_pipe_client *rpccli;
|
|
struct netlogon_creds_cli_lck *lck;
|
|
NTSTATUS status;
|
|
|
|
status = netlogon_creds_cli_lck(
|
|
netlogon_creds, NETLOGON_CREDS_CLI_LCK_EXCLUSIVE,
|
|
frame, &lck);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_WARNING("netlogon_creds_cli_lck returned %s\n",
|
|
nt_errstr(status));
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
status = cli_rpc_pipe_open_bind_schannel(cli,
|
|
table,
|
|
transport,
|
|
netlogon_creds,
|
|
remote_name,
|
|
remote_sockaddr,
|
|
&rpccli);
|
|
if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
|
|
netlogon_creds_cli_delete_lck(netlogon_creds);
|
|
}
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("cli_rpc_pipe_open_bind_schannel failed: %s\n",
|
|
nt_errstr(status));
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
|
|
if (ndr_syntax_id_equal(&table->syntax_id,
|
|
&ndr_table_netlogon.syntax_id)) {
|
|
status = netlogon_creds_cli_check(netlogon_creds,
|
|
rpccli->binding_handle,
|
|
NULL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("netlogon_creds_cli_check failed with %s\n",
|
|
nt_errstr(status)));
|
|
TALLOC_FREE(frame);
|
|
return status;
|
|
}
|
|
}
|
|
|
|
DBG_DEBUG("opened pipe %s to machine %s with key %s "
|
|
"and bound using schannel.\n",
|
|
table->name, rpccli->desthost,
|
|
netlogon_creds_cli_debug_string(netlogon_creds, lck));
|
|
|
|
TALLOC_FREE(frame);
|
|
|
|
*_rpccli = rpccli;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS cli_get_session_key(TALLOC_CTX *mem_ctx,
|
|
struct rpc_pipe_client *cli,
|
|
DATA_BLOB *session_key)
|
|
{
|
|
NTSTATUS status;
|
|
struct pipe_auth_data *a;
|
|
struct gensec_security *gensec_security;
|
|
DATA_BLOB sk = { .data = NULL };
|
|
bool make_dup = false;
|
|
|
|
if (!session_key || !cli) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
a = cli->auth;
|
|
|
|
if (a == NULL) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
switch (cli->auth->auth_type) {
|
|
case DCERPC_AUTH_TYPE_NONE:
|
|
sk = data_blob_const(a->transport_session_key.data,
|
|
a->transport_session_key.length);
|
|
make_dup = true;
|
|
break;
|
|
default:
|
|
gensec_security = a->auth_ctx;
|
|
status = gensec_session_key(gensec_security, mem_ctx, &sk);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
make_dup = false;
|
|
break;
|
|
}
|
|
|
|
if (!sk.data) {
|
|
return NT_STATUS_NO_USER_SESSION_KEY;
|
|
}
|
|
|
|
if (make_dup) {
|
|
*session_key = data_blob_dup_talloc(mem_ctx, sk);
|
|
} else {
|
|
*session_key = sk;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|