2 Unix SMB/CIFS implementation.
4 SMB2 client tree handling
6 Copyright (C) Andrew Tridgell 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "libcli/raw/libcliraw.h"
24 #include "libcli/smb2/smb2.h"
25 #include "libcli/smb2/smb2_calls.h"
27 #define CREATE_TAG_EXTA 0x41747845 /* "ExtA" */
28 #define CREATE_TAG_MXAC 0x6341784D /* "MxAc" */
31 add a blob to a smb2_create attribute blob
33 NTSTATUS smb2_create_blob_add(TALLOC_CTX *mem_ctx, DATA_BLOB *blob,
35 DATA_BLOB add, bool last)
37 uint32_t ofs = blob->length;
38 uint8_t pad = smb2_padding_size(add.length, 8);
39 if (!data_blob_realloc(mem_ctx, blob, blob->length + 0x18 + add.length + pad))
40 return NT_STATUS_NO_MEMORY;
43 SIVAL(blob->data, ofs+0x00, 0);
45 SIVAL(blob->data, ofs+0x00, 0x18 + add.length + pad);
47 SSVAL(blob->data, ofs+0x04, 0x10); /* offset of tag */
48 SIVAL(blob->data, ofs+0x06, 0x04); /* tag length */
49 SSVAL(blob->data, ofs+0x0A, 0x18); /* offset of data */
50 SIVAL(blob->data, ofs+0x0C, add.length);
51 SIVAL(blob->data, ofs+0x10, tag);
52 SIVAL(blob->data, ofs+0x14, 0); /* pad? */
53 memcpy(blob->data+ofs+0x18, add.data, add.length);
54 memset(blob->data+ofs+0x18+add.length, 0, pad);
62 struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create *io)
64 struct smb2_request *req;
66 DATA_BLOB blob = data_blob(NULL, 0);
68 req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x38, true, 0);
69 if (req == NULL) return NULL;
71 SSVAL(req->out.body, 0x02, io->in.oplock_flags);
72 SIVAL(req->out.body, 0x04, io->in.impersonation);
73 SIVAL(req->out.body, 0x08, io->in.unknown3[0]);
74 SIVAL(req->out.body, 0x0C, io->in.unknown3[1]);
75 SIVAL(req->out.body, 0x10, io->in.unknown3[2]);
76 SIVAL(req->out.body, 0x14, io->in.unknown3[3]);
77 SIVAL(req->out.body, 0x18, io->in.access_mask);
78 SIVAL(req->out.body, 0x1C, io->in.file_attr);
79 SIVAL(req->out.body, 0x20, io->in.share_access);
80 SIVAL(req->out.body, 0x24, io->in.open_disposition);
81 SIVAL(req->out.body, 0x28, io->in.create_options);
83 status = smb2_push_o16s16_string(&req->out, 0x2C, io->in.fname);
84 if (!NT_STATUS_IS_OK(status)) {
89 if (io->in.eas.num_eas != 0) {
90 DATA_BLOB b = data_blob_talloc(req, NULL,
91 ea_list_size_chained(io->in.eas.num_eas, io->in.eas.eas));
92 ea_put_list_chained(b.data, io->in.eas.num_eas, io->in.eas.eas);
93 status = smb2_create_blob_add(req, &blob, CREATE_TAG_EXTA, b, false);
94 if (!NT_STATUS_IS_OK(status)) {
101 /* an empty MxAc tag seems to be used to ask the server to
102 return the maximum access mask allowed on the file */
103 status = smb2_create_blob_add(req, &blob, CREATE_TAG_MXAC, data_blob(NULL, 0), true);
105 if (!NT_STATUS_IS_OK(status)) {
109 status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
110 if (!NT_STATUS_IS_OK(status)) {
115 smb2_transport_send(req);
124 NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
128 if (!smb2_request_receive(req) ||
129 !smb2_request_is_ok(req)) {
130 return smb2_request_destroy(req);
133 SMB2_CHECK_PACKET_RECV(req, 0x58, true);
135 io->out.oplock_flags = SVAL(req->in.body, 0x02);
136 io->out.create_action = IVAL(req->in.body, 0x04);
137 io->out.create_time = smbcli_pull_nttime(req->in.body, 0x08);
138 io->out.access_time = smbcli_pull_nttime(req->in.body, 0x10);
139 io->out.write_time = smbcli_pull_nttime(req->in.body, 0x18);
140 io->out.change_time = smbcli_pull_nttime(req->in.body, 0x20);
141 io->out.alloc_size = BVAL(req->in.body, 0x28);
142 io->out.size = BVAL(req->in.body, 0x30);
143 io->out.file_attr = IVAL(req->in.body, 0x38);
144 io->out._pad = IVAL(req->in.body, 0x3C);
145 smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
146 status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &io->out.blob);
147 if (!NT_STATUS_IS_OK(status)) {
148 smb2_request_destroy(req);
152 return smb2_request_destroy(req);
158 NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io)
160 struct smb2_request *req = smb2_create_send(tree, io);
161 return smb2_create_recv(req, mem_ctx, io);