Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 183 insertions, 0 deletions

diff --git a/libcli/smb/smb2cli_write.c b/libcli/smb/smb2cli_write.c
new file mode 100644
index 0000000..6d0a0aa
--- /dev/null
+++ b/libcli/smb/smb2cli_write.c
@@ -0,0 +1,183 @@
+/*
+   Unix SMB/CIFS implementation.
+   smb2 lib
+   Copyright (C) Volker Lendecke 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 "system/network.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "smb_common.h"
+#include "smbXcli_base.h"
+
+struct smb2cli_write_state {
+	uint8_t fixed[48];
+	uint8_t dyn_pad[1];
+	uint32_t written;
+};
+
+static void smb2cli_write_done(struct tevent_req *subreq);
+
+struct tevent_req *smb2cli_write_send(TALLOC_CTX *mem_ctx,
+				      struct tevent_context *ev,
+				      struct smbXcli_conn *conn,
+				      uint32_t timeout_msec,
+				      struct smbXcli_session *session,
+				      struct smbXcli_tcon *tcon,
+				      uint32_t length,
+				      uint64_t offset,
+				      uint64_t fid_persistent,
+				      uint64_t fid_volatile,
+				      uint32_t remaining_bytes,
+				      uint32_t flags,
+				      const uint8_t *data)
+{
+	struct tevent_req *req, *subreq;
+	struct smb2cli_write_state *state;
+	uint8_t *fixed;
+	const uint8_t *dyn;
+	size_t dyn_len;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct smb2cli_write_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	fixed = state->fixed;
+
+	SSVAL(fixed, 0, 49);
+	SSVAL(fixed, 2, SMB2_HDR_BODY + 48);
+	SIVAL(fixed, 4, length);
+	SBVAL(fixed, 8, offset);
+	SBVAL(fixed, 16, fid_persistent);
+	SBVAL(fixed, 24, fid_volatile);
+	SIVAL(fixed, 36, remaining_bytes);
+	SIVAL(fixed, 44, flags);
+
+	if (length > 0) {
+		dyn = data;
+		dyn_len = length;
+	} else {
+		dyn = state->dyn_pad;;
+		dyn_len = sizeof(state->dyn_pad);
+	}
+
+	subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_WRITE,
+				  0, 0, /* flags */
+				  timeout_msec,
+				  tcon,
+				  session,
+				  state->fixed, sizeof(state->fixed),
+				  dyn, dyn_len,
+				  0); /* max_dyn_len */
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, smb2cli_write_done, req);
+	return req;
+}
+
+static void smb2cli_write_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req =
+		tevent_req_callback_data(subreq,
+		struct tevent_req);
+	struct smb2cli_write_state *state =
+		tevent_req_data(req,
+		struct smb2cli_write_state);
+	NTSTATUS status;
+	struct iovec *iov;
+	static const struct smb2cli_req_expected_response expected[] = {
+	{
+		.status = NT_STATUS_OK,
+		.body_size = 0x11
+	}
+	};
+
+	status = smb2cli_req_recv(subreq, state, &iov,
+				  expected, ARRAY_SIZE(expected));
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+	state->written = IVAL(iov[1].iov_base, 4);
+	tevent_req_done(req);
+}
+
+NTSTATUS smb2cli_write_recv(struct tevent_req *req, uint32_t *written)
+{
+	struct smb2cli_write_state *state =
+		tevent_req_data(req,
+		struct smb2cli_write_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+	if (written) {
+		*written = state->written;
+	}
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+NTSTATUS smb2cli_write(struct smbXcli_conn *conn,
+		       uint32_t timeout_msec,
+		       struct smbXcli_session *session,
+		       struct smbXcli_tcon *tcon,
+		       uint32_t length,
+		       uint64_t offset,
+		       uint64_t fid_persistent,
+		       uint64_t fid_volatile,
+		       uint32_t remaining_bytes,
+		       uint32_t flags,
+		       const uint8_t *data,
+		       uint32_t *written)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct tevent_context *ev;
+	struct tevent_req *req;
+	NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+	if (smbXcli_conn_has_async_calls(conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+	ev = samba_tevent_context_init(frame);
+	if (ev == NULL) {
+		goto fail;
+	}
+	req = smb2cli_write_send(frame, ev, conn, timeout_msec,
+				 session, tcon,
+				 length, offset,
+				 fid_persistent, fid_volatile,
+				 remaining_bytes, flags, data);
+	if (req == NULL) {
+		goto fail;
+	}
+	if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+		goto fail;
+	}
+	status = smb2cli_write_recv(req, written);
+ fail:
+	TALLOC_FREE(frame);
+	return status;
+}