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, 446 insertions, 0 deletions

diff --git a/source4/libcli/smb2/create.c b/source4/libcli/smb2/create.c
new file mode 100644
index 0000000..c91b150
--- /dev/null
+++ b/source4/libcli/smb2/create.c
@@ -0,0 +1,446 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   SMB2 client tree handling
+
+   Copyright (C) Andrew Tridgell 2005
+   
+   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 "libcli/raw/libcliraw.h"
+#include "libcli/raw/raw_proto.h"
+#include "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+#include "librpc/gen_ndr/ndr_security.h"
+
+/*
+  send a create request
+*/
+struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create *io)
+{
+	struct smb2_request *req;
+	NTSTATUS status;
+	DATA_BLOB blob;
+	struct smb2_create_blobs blobs;
+	int i;
+
+	ZERO_STRUCT(blobs);
+
+	req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x38, true, 0);
+	if (req == NULL) return NULL;
+
+	SCVAL(req->out.body, 0x02, io->in.security_flags);
+	SCVAL(req->out.body, 0x03, io->in.oplock_level);
+	SIVAL(req->out.body, 0x04, io->in.impersonation_level);
+	SBVAL(req->out.body, 0x08, io->in.create_flags);
+	SBVAL(req->out.body, 0x10, io->in.reserved);
+	SIVAL(req->out.body, 0x18, io->in.desired_access);
+	SIVAL(req->out.body, 0x1C, io->in.file_attributes);
+	SIVAL(req->out.body, 0x20, io->in.share_access);
+	SIVAL(req->out.body, 0x24, io->in.create_disposition);
+	SIVAL(req->out.body, 0x28, io->in.create_options);
+
+	status = smb2_push_o16s16_string(&req->out, 0x2C, io->in.fname);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(req);
+		return NULL;
+	}
+
+	/* now add all the optional blobs */
+	if (io->in.eas.num_eas != 0) {
+		DATA_BLOB b = data_blob_talloc(req, NULL, 
+					       ea_list_size_chained(io->in.eas.num_eas, io->in.eas.eas, 4));
+		ea_put_list_chained(b.data, io->in.eas.num_eas, io->in.eas.eas, 4);
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_EXTA, b);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+		data_blob_free(&b);
+	}
+
+	/* an empty MxAc tag seems to be used to ask the server to
+	   return the maximum access mask allowed on the file */
+	if (io->in.query_maximal_access) {
+		/* TODO: MS-SMB2 2.2.13.2.5 says this can contain a timestamp? What to do
+		   with that if it doesn't match? */
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_MXAC, data_blob(NULL, 0));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.alloc_size != 0) {
+		uint8_t data[8];
+		SBVAL(data, 0, io->in.alloc_size);
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_ALSI, data_blob_const(data, 8));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.durable_open) {
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_DHNQ, data_blob_talloc_zero(req, 16));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.durable_open_v2) {
+		uint8_t data[32];
+		uint32_t flags = 0;
+		struct GUID_ndr_buf guid_buf = { .buf = {0}, };
+
+		SIVAL(data, 0, io->in.timeout);
+		if (io->in.persistent_open) {
+			flags = SMB2_DHANDLE_FLAG_PERSISTENT;
+		}
+		SIVAL(data, 4, flags);
+		SBVAL(data, 8, 0x0); /* reserved */
+		status = GUID_to_ndr_buf(&io->in.create_guid, &guid_buf);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+		memcpy(data+16, guid_buf.buf, sizeof(guid_buf.buf));
+
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_DH2Q,
+					      data_blob_const(data, 32));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.durable_handle) {
+		uint8_t data[16];
+		smb2_push_handle(data, io->in.durable_handle);
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_DHNC, data_blob_const(data, 16));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.durable_handle_v2) {
+		uint8_t data[36];
+		struct GUID_ndr_buf guid_buf = { .buf = {0}, };
+		uint32_t flags = 0;
+
+		smb2_push_handle(data, io->in.durable_handle_v2);
+		status = GUID_to_ndr_buf(&io->in.create_guid, &guid_buf);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+		memcpy(data+16, guid_buf.buf, sizeof(guid_buf.buf));
+		if (io->in.persistent_open) {
+			flags = SMB2_DHANDLE_FLAG_PERSISTENT;
+		}
+		SIVAL(data, 32, flags);
+
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_DH2C,
+					      data_blob_const(data, 36));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.timewarp) {
+		uint8_t data[8];
+		SBVAL(data, 0, io->in.timewarp);		
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_TWRP, data_blob_const(data, 8));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.sec_desc) {
+		enum ndr_err_code ndr_err;
+		DATA_BLOB sd_blob;
+		ndr_err = ndr_push_struct_blob(&sd_blob, req, io->in.sec_desc,
+					       (ndr_push_flags_fn_t)ndr_push_security_descriptor);
+		if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+			talloc_free(req);
+			return NULL;
+		}
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_SECD, sd_blob);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.query_on_disk_id) {
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_QFID, data_blob(NULL, 0));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.lease_request) {
+		uint8_t data[32];
+
+		if (!smb2_lease_push(io->in.lease_request, data,
+				     sizeof(data))) {
+			TALLOC_FREE(req);
+			return NULL;
+		}
+
+		status = smb2_create_blob_add(
+			req, &blobs, SMB2_CREATE_TAG_RQLS,
+			data_blob_const(data, sizeof(data)));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.lease_request_v2) {
+		uint8_t data[52];
+
+		if (!smb2_lease_push(io->in.lease_request_v2, data,
+				     sizeof(data))) {
+			TALLOC_FREE(req);
+			return NULL;
+		}
+
+		status = smb2_create_blob_add(
+			req, &blobs, SMB2_CREATE_TAG_RQLS,
+			data_blob_const(data, sizeof(data)));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	if (io->in.app_instance_id) {
+		uint8_t data[20];
+		struct GUID_ndr_buf guid_buf = { .buf = {0}, };
+
+		SSVAL(data, 0, 20); /* structure size */
+		SSVAL(data, 2, 0);  /* reserved */
+
+		status = GUID_to_ndr_buf(io->in.app_instance_id, &guid_buf);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+		memcpy(data+4, guid_buf.buf, sizeof(guid_buf.buf));
+
+		status = smb2_create_blob_add(req, &blobs,
+					      SMB2_CREATE_TAG_APP_INSTANCE_ID,
+					      data_blob_const(data, 20));
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+	/* and any custom blobs */
+	for (i=0;i<io->in.blobs.num_blobs;i++) {
+		status = smb2_create_blob_add(req, &blobs,
+					      io->in.blobs.blobs[i].tag, 
+					      io->in.blobs.blobs[i].data);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+	}
+
+
+	status = smb2_create_blob_push(req, &blob, blobs);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(req);
+		return NULL;
+	}
+
+	status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		talloc_free(req);
+		return NULL;
+	}
+
+	if (((io->in.fname == NULL) || (strlen(io->in.fname) == 0)) &&
+	    (blob.length == 0)) {
+		struct smb2_request_buffer *buf = &req->out;
+
+		status = smb2_grow_buffer(buf, 1);
+		if (!NT_STATUS_IS_OK(status)) {
+			talloc_free(req);
+			return NULL;
+		}
+		buf->dynamic[0] = 0;
+		buf->dynamic += 1;
+		buf->body_size += 1;
+		buf->size += 1;
+	}
+
+	data_blob_free(&blob);
+
+	smb2_transport_send(req);
+
+	return req;
+}
+
+
+/*
+  recv a create reply
+*/
+NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
+{
+	NTSTATUS status;
+	DATA_BLOB blob;
+	int i;
+
+	if (!smb2_request_receive(req) || 
+	    !smb2_request_is_ok(req)) {
+		return smb2_request_destroy(req);
+	}
+
+	SMB2_CHECK_PACKET_RECV(req, 0x58, true);
+	ZERO_STRUCT(io->out);
+	io->out.oplock_level   = CVAL(req->in.body, 0x02);
+	io->out.reserved       = CVAL(req->in.body, 0x03);
+	io->out.create_action  = IVAL(req->in.body, 0x04);
+	io->out.create_time    = smbcli_pull_nttime(req->in.body, 0x08);
+	io->out.access_time    = smbcli_pull_nttime(req->in.body, 0x10);
+	io->out.write_time     = smbcli_pull_nttime(req->in.body, 0x18);
+	io->out.change_time    = smbcli_pull_nttime(req->in.body, 0x20);
+	io->out.alloc_size     = BVAL(req->in.body, 0x28);
+	io->out.size           = BVAL(req->in.body, 0x30);
+	io->out.file_attr      = IVAL(req->in.body, 0x38);
+	io->out.reserved2      = IVAL(req->in.body, 0x3C);
+	smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
+	status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &blob);
+	if (!NT_STATUS_IS_OK(status)) {
+		smb2_request_destroy(req);
+		return status;
+	}
+
+	status = smb2_create_blob_parse(mem_ctx, blob, &io->out.blobs);
+	if (!NT_STATUS_IS_OK(status)) {
+		smb2_request_destroy(req);
+		return status;
+	}
+
+	/* pull out the parsed blobs */
+	for (i=0;i<io->out.blobs.num_blobs;i++) {
+		if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_MXAC) == 0) {
+			if (io->out.blobs.blobs[i].data.length != 8) {
+				smb2_request_destroy(req);
+				return NT_STATUS_INVALID_NETWORK_RESPONSE;
+			}
+			io->out.maximal_access_status =
+				IVAL(io->out.blobs.blobs[i].data.data, 0);
+			io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 4);
+		}
+		if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_QFID) == 0) {
+			if (io->out.blobs.blobs[i].data.length != 32) {
+				smb2_request_destroy(req);
+				return NT_STATUS_INVALID_NETWORK_RESPONSE;
+			}
+			memcpy(io->out.on_disk_id, io->out.blobs.blobs[i].data.data, 32);
+		}
+		if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_RQLS) == 0) {
+			struct smb2_lease *ls = NULL;
+			uint8_t *data;
+
+			ZERO_STRUCT(io->out.lease_response);
+			ZERO_STRUCT(io->out.lease_response_v2);
+
+			switch (io->out.blobs.blobs[i].data.length) {
+			case 32:
+				ls = &io->out.lease_response;
+				ls->lease_version = 1;
+				break;
+			case 52:
+				ls = &io->out.lease_response_v2;
+				ls->lease_version = 2;
+				break;
+			default:
+				smb2_request_destroy(req);
+				return NT_STATUS_INVALID_NETWORK_RESPONSE;
+			}
+
+			data = io->out.blobs.blobs[i].data.data;
+			memcpy(&ls->lease_key, data, 16);
+			ls->lease_state = IVAL(data, 16);
+			ls->lease_flags = IVAL(data, 20);
+			ls->lease_duration = BVAL(data, 24);
+
+			if (io->out.blobs.blobs[i].data.length == 52) {
+				memcpy(&ls->parent_lease_key, data+32, 16);
+				ls->lease_epoch = SVAL(data, 48);
+			}
+		}
+		if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DHNQ) == 0) {
+			if (io->out.blobs.blobs[i].data.length != 8) {
+				smb2_request_destroy(req);
+				return NT_STATUS_INVALID_NETWORK_RESPONSE;
+			}
+			io->out.durable_open = true;
+		}
+		if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_DH2Q) == 0) {
+			uint32_t flags;
+			uint8_t *data;
+
+			if (io->out.blobs.blobs[i].data.length != 8) {
+				smb2_request_destroy(req);
+				return NT_STATUS_INVALID_NETWORK_RESPONSE;
+			}
+
+			io->out.durable_open = false;
+			io->out.durable_open_v2 = true;
+
+			data = io->out.blobs.blobs[i].data.data;
+			io->out.timeout = IVAL(data, 0);
+			flags = IVAL(data, 4);
+			if ((flags & SMB2_DHANDLE_FLAG_PERSISTENT) != 0) {
+				io->out.persistent_open = true;
+			}
+		}
+	}
+
+	data_blob_free(&blob);
+
+	return smb2_request_destroy(req);
+}
+
+/*
+  sync create request
+*/
+NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io)
+{
+	struct smb2_request *req = smb2_create_send(tree, io);
+	return smb2_create_recv(req, mem_ctx, io);
+}