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libsmb: Add smb2cli_notify()
Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Volker Lendecke
Jeremy Allison
parent
e6846584d7
commit
ad33964f8c
178
libcli/smb/smb2cli_notify.c
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178
libcli/smb/smb2cli_notify.c
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@ -0,0 +1,178 @@
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/*
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Unix SMB/CIFS implementation.
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smb2 lib
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Copyright (C) Volker Lendecke 2017
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "system/network.h"
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#include "lib/util/tevent_ntstatus.h"
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#include "smb_common.h"
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#include "smbXcli_base.h"
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#include "librpc/gen_ndr/ndr_notify.h"
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struct smb2cli_notify_state {
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uint8_t fixed[32];
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struct iovec *recv_iov;
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uint8_t *data;
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uint32_t data_length;
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};
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static void smb2cli_notify_done(struct tevent_req *subreq);
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struct tevent_req *smb2cli_notify_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbXcli_conn *conn,
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uint32_t timeout_msec,
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struct smbXcli_session *session,
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struct smbXcli_tcon *tcon,
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uint32_t output_buffer_length,
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uint64_t fid_persistent,
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uint64_t fid_volatile,
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uint32_t completion_filter,
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bool recursive)
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{
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struct tevent_req *req, *subreq;
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struct smb2cli_notify_state *state;
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uint8_t *fixed;
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req = tevent_req_create(mem_ctx, &state,
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struct smb2cli_notify_state);
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if (req == NULL) {
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return NULL;
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}
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fixed = state->fixed;
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SSVAL(fixed, 0, 32);
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SSVAL(fixed, 2, recursive ? SMB2_WATCH_TREE : 0);
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SIVAL(fixed, 4, output_buffer_length);
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SBVAL(fixed, 8, fid_persistent);
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SBVAL(fixed, 16, fid_volatile);
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SIVAL(fixed, 24, completion_filter);
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SIVAL(fixed, 28, 0); /* reserved */
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subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_NOTIFY,
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0, 0, /* flags */
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timeout_msec,
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tcon,
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session,
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state->fixed, sizeof(state->fixed),
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NULL, 0, /* dyn* */
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0); /* max_dyn_len */
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if (tevent_req_nomem(subreq, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_set_callback(subreq, smb2cli_notify_done, req);
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return req;
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}
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static void smb2cli_notify_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(
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subreq, struct tevent_req);
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struct smb2cli_notify_state *state = tevent_req_data(
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req, struct smb2cli_notify_state);
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NTSTATUS status;
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struct iovec *iov;
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uint16_t data_offset;
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static const struct smb2cli_req_expected_response expected[] = {
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{
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.status = NT_STATUS_OK,
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.body_size = 0x09
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}
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};
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status = smb2cli_req_recv(subreq, state, &iov,
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expected, ARRAY_SIZE(expected));
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TALLOC_FREE(subreq);
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if (tevent_req_nterror(req, status)) {
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return;
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}
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data_offset = SVAL(iov[1].iov_base, 2);
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state->data_length = IVAL(iov[1].iov_base, 4);
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if ((data_offset != SMB2_HDR_BODY + 8) ||
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(state->data_length > iov[2].iov_len)) {
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tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
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return;
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}
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state->recv_iov = iov;
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state->data = (uint8_t *)iov[2].iov_base;
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tevent_req_done(req);
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}
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NTSTATUS smb2cli_notify_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
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uint8_t **data, uint32_t *data_length)
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{
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struct smb2cli_notify_state *state = tevent_req_data(
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req, struct smb2cli_notify_state);
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NTSTATUS status;
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if (tevent_req_is_nterror(req, &status)) {
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return status;
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}
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talloc_steal(mem_ctx, state->recv_iov);
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*data_length = state->data_length;
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*data = state->data;
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return NT_STATUS_OK;
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}
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NTSTATUS smb2cli_notify(struct smbXcli_conn *conn,
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uint32_t timeout_msec,
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struct smbXcli_session *session,
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struct smbXcli_tcon *tcon,
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uint32_t output_buffer_length,
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uint64_t fid_persistent,
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uint64_t fid_volatile,
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uint32_t completion_filter,
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bool recursive,
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TALLOC_CTX *mem_ctx,
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uint8_t **data,
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uint32_t *data_length)
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{
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TALLOC_CTX *frame = talloc_stackframe();
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struct tevent_context *ev;
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struct tevent_req *req;
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NTSTATUS status = NT_STATUS_NO_MEMORY;
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if (smbXcli_conn_has_async_calls(conn)) {
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/*
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* Can't use sync call while an async call is in flight
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*/
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status = NT_STATUS_INVALID_PARAMETER;
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goto fail;
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}
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ev = samba_tevent_context_init(frame);
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if (ev == NULL) {
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goto fail;
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}
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req = smb2cli_notify_send(frame, ev, conn, timeout_msec,
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session, tcon, output_buffer_length,
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fid_persistent, fid_volatile,
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completion_filter, recursive);
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if (req == NULL) {
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goto fail;
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}
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if (!tevent_req_poll_ntstatus(req, ev, &status)) {
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goto fail;
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}
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status = smb2cli_notify_recv(req, mem_ctx, data, data_length);
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fail:
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TALLOC_FREE(frame);
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return status;
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}
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@ -806,6 +806,32 @@ NTSTATUS smb2cli_query_directory(struct smbXcli_conn *conn,
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uint8_t **data,
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uint32_t *data_length);
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struct tevent_req *smb2cli_notify_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbXcli_conn *conn,
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uint32_t timeout_msec,
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struct smbXcli_session *session,
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struct smbXcli_tcon *tcon,
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uint32_t output_buffer_length,
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uint64_t fid_persistent,
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uint64_t fid_volatile,
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uint32_t completion_filter,
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bool recursive);
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NTSTATUS smb2cli_notify_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
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uint8_t **data, uint32_t *data_length);
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NTSTATUS smb2cli_notify(struct smbXcli_conn *conn,
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uint32_t timeout_msec,
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struct smbXcli_session *session,
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struct smbXcli_tcon *tcon,
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uint32_t output_buffer_length,
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uint64_t fid_persistent,
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uint64_t fid_volatile,
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uint32_t completion_filter,
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bool recursive,
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TALLOC_CTX *mem_ctx,
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uint8_t **data,
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uint32_t *data_length);
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struct tevent_req *smb2cli_ioctl_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct smbXcli_conn *conn,
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@ -39,6 +39,7 @@ def build(bld):
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smb2cli_flush.c
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smb2cli_set_info.c
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smb2cli_query_info.c
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smb2cli_notify.c
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smb2cli_query_directory.c
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smb2cli_ioctl.c
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smb2cli_echo.c
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