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, 266 insertions, 0 deletions

diff --git a/libcli/smb/smb2cli_query_info.c b/libcli/smb/smb2cli_query_info.c
new file mode 100644
index 0000000..d499611
--- /dev/null
+++ b/libcli/smb/smb2cli_query_info.c
@@ -0,0 +1,266 @@
+/*
+   Unix SMB/CIFS implementation.
+   smb2 lib
+   Copyright (C) Stefan Metzmacher 2012
+
+   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_query_info_state {
+	uint8_t fixed[0x28];
+	uint8_t dyn_pad[1];
+	uint32_t max_output_length;
+	struct iovec *recv_iov;
+	DATA_BLOB out_output_buffer;
+	bool out_valid;
+};
+
+static void smb2cli_query_info_done(struct tevent_req *subreq);
+
+struct tevent_req *smb2cli_query_info_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,
+					   uint8_t in_info_type,
+					   uint8_t in_file_info_class,
+					   uint32_t in_max_output_length,
+					   const DATA_BLOB *in_input_buffer,
+					   uint32_t in_additional_info,
+					   uint32_t in_flags,
+					   uint64_t in_fid_persistent,
+					   uint64_t in_fid_volatile)
+{
+	struct tevent_req *req, *subreq;
+	struct smb2cli_query_info_state *state;
+	uint8_t *fixed;
+	uint8_t *dyn;
+	size_t dyn_len;
+	uint16_t input_buffer_offset = 0;
+	uint32_t input_buffer_length = 0;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct smb2cli_query_info_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->max_output_length = in_max_output_length;
+
+	if (in_input_buffer) {
+		input_buffer_offset = SMB2_HDR_BODY+0x28;
+		input_buffer_length = in_input_buffer->length;
+	}
+
+	fixed = state->fixed;
+
+	SSVAL(fixed, 0x00, 0x29);
+	SCVAL(fixed, 0x02, in_info_type);
+	SCVAL(fixed, 0x03, in_file_info_class); /* reserved */
+	SIVAL(fixed, 0x04, in_max_output_length);
+	SSVAL(fixed, 0x08, input_buffer_offset);
+	SSVAL(fixed, 0x0A, 0); /* reserved */
+	SIVAL(fixed, 0x0C, input_buffer_length);
+	SIVAL(fixed, 0x10, in_additional_info);
+	SIVAL(fixed, 0x14, in_flags);
+	SBVAL(fixed, 0x18, in_fid_persistent);
+	SBVAL(fixed, 0x20, in_fid_volatile);
+
+	if (input_buffer_length > 0) {
+		dyn = in_input_buffer->data;
+		dyn_len = in_input_buffer->length;
+	} else {
+		dyn = state->dyn_pad;
+		dyn_len = sizeof(state->dyn_pad);
+	}
+
+	subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_GETINFO,
+				  0, 0, /* flags */
+				  timeout_msec,
+				  tcon,
+				  session,
+				  state->fixed, sizeof(state->fixed),
+				  dyn, dyn_len,
+				  in_max_output_length); /* max_dyn_len */
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, smb2cli_query_info_done, req);
+	return req;
+}
+
+static void smb2cli_query_info_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req =
+		tevent_req_callback_data(subreq,
+		struct tevent_req);
+	struct smb2cli_query_info_state *state =
+		tevent_req_data(req,
+		struct smb2cli_query_info_state);
+	NTSTATUS status;
+	struct iovec *iov;
+	uint8_t *fixed;
+	uint8_t *dyn;
+	size_t dyn_len;
+	uint32_t dyn_ofs = SMB2_HDR_BODY + 0x08;
+	uint32_t output_buffer_offset;
+	uint32_t output_buffer_length;
+	static const struct smb2cli_req_expected_response expected[] = {
+	{
+		.status = NT_STATUS_OK,
+		.body_size = 0x09
+	},
+	{
+		.status = STATUS_BUFFER_OVERFLOW,
+		.body_size = 0x09
+	}
+	};
+
+	status = smb2cli_req_recv(subreq, state, &iov,
+				  expected, ARRAY_SIZE(expected));
+	TALLOC_FREE(subreq);
+	if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
+		/* no error */
+	} else {
+		if (tevent_req_nterror(req, status)) {
+			return;
+		}
+	}
+
+	state->recv_iov = iov;
+	fixed = (uint8_t *)iov[1].iov_base;
+	dyn = (uint8_t *)iov[2].iov_base;
+	dyn_len = iov[2].iov_len;
+
+	output_buffer_offset = SVAL(fixed, 0x02);
+	output_buffer_length = IVAL(fixed, 0x04);
+
+	if ((output_buffer_offset > 0) && (output_buffer_length > 0)) {
+		if (output_buffer_offset != dyn_ofs) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		if (output_buffer_length > dyn_len) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		if (output_buffer_length > state->max_output_length) {
+			tevent_req_nterror(
+				req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+			return;
+		}
+
+		state->out_output_buffer.data = dyn;
+		state->out_output_buffer.length = output_buffer_length;
+	}
+
+	state->out_valid = true;
+
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+NTSTATUS smb2cli_query_info_recv(struct tevent_req *req,
+				 TALLOC_CTX *mem_ctx,
+				 DATA_BLOB *out_output_buffer)
+{
+	struct smb2cli_query_info_state *state =
+		tevent_req_data(req,
+		struct smb2cli_query_info_state);
+	NTSTATUS status = NT_STATUS_OK;
+
+	if (tevent_req_is_nterror(req, &status) && !state->out_valid) {
+		if (out_output_buffer) {
+			*out_output_buffer = data_blob_null;
+		}
+		tevent_req_received(req);
+		return status;
+	}
+
+	talloc_steal(mem_ctx, state->recv_iov);
+	if (out_output_buffer) {
+		*out_output_buffer = state->out_output_buffer;
+	}
+
+	tevent_req_received(req);
+	return status;
+}
+
+NTSTATUS smb2cli_query_info(struct smbXcli_conn *conn,
+			    uint32_t timeout_msec,
+			    struct smbXcli_session *session,
+			    struct smbXcli_tcon *tcon,
+			    uint8_t in_info_type,
+			    uint8_t in_file_info_class,
+			    uint32_t in_max_output_length,
+			    const DATA_BLOB *in_input_buffer,
+			    uint32_t in_additional_info,
+			    uint32_t in_flags,
+			    uint64_t in_fid_persistent,
+			    uint64_t in_fid_volatile,
+			    TALLOC_CTX *mem_ctx,
+			    DATA_BLOB *out_output_buffer)
+{
+	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_MIX;
+		goto fail;
+	}
+	ev = samba_tevent_context_init(frame);
+	if (ev == NULL) {
+		goto fail;
+	}
+	req = smb2cli_query_info_send(frame, ev,
+				      conn, timeout_msec,
+				      session, tcon,
+				      in_info_type,
+				      in_file_info_class,
+				      in_max_output_length,
+				      in_input_buffer,
+				      in_additional_info,
+				      in_flags,
+				      in_fid_persistent,
+				      in_fid_volatile);
+	if (req == NULL) {
+		goto fail;
+	}
+	if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+		goto fail;
+	}
+	status = smb2cli_query_info_recv(req, mem_ctx,
+					 out_output_buffer);
+ fail:
+	TALLOC_FREE(frame);
+	return status;
+}