| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 |
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| 4 | SMB2 Create Context Blob handling
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| 5 |
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| 6 | Copyright (C) Andrew Tridgell 2005
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| 7 | Copyright (C) Stefan Metzmacher 2008-2009
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| 8 |
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| 9 | This program is free software; you can redistribute it and/or modify
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| 10 | it under the terms of the GNU General Public License as published by
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| 11 | the Free Software Foundation; either version 3 of the License, or
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| 12 | (at your option) any later version.
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| 13 |
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| 14 | This program is distributed in the hope that it will be useful,
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| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | GNU General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License
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| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 21 | */
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| 22 |
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| 23 | #include "includes.h"
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| 24 | #include "../libcli/smb/smb_common.h"
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| 25 |
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| 26 | static size_t smb2_create_blob_padding(uint32_t offset, size_t n)
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| 27 | {
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| 28 | if ((offset & (n-1)) == 0) return 0;
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| 29 | return n - (offset & (n-1));
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| 30 | }
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| 31 |
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| 32 | /*
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| 33 | parse a set of SMB2 create blobs
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| 34 | */
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| 35 | NTSTATUS smb2_create_blob_parse(TALLOC_CTX *mem_ctx, const DATA_BLOB buffer,
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| 36 | struct smb2_create_blobs *blobs)
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| 37 | {
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| 38 | const uint8_t *data = buffer.data;
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| 39 | uint32_t remaining = buffer.length;
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| 40 |
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| 41 | while (remaining > 0) {
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| 42 | uint32_t next;
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| 43 | uint32_t name_offset, name_length;
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| 44 | uint32_t reserved, data_offset;
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| 45 | uint32_t data_length;
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| 46 | char *tag;
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| 47 | DATA_BLOB b;
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| 48 | NTSTATUS status;
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| 49 |
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| 50 | if (remaining < 16) {
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| 51 | return NT_STATUS_INVALID_PARAMETER;
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| 52 | }
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| 53 | next = IVAL(data, 0);
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| 54 | name_offset = SVAL(data, 4);
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| 55 | name_length = SVAL(data, 6);
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| 56 | reserved = SVAL(data, 8);
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| 57 | data_offset = SVAL(data, 10);
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| 58 | data_length = IVAL(data, 12);
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