1 /* Microsoft Reference Implementation for TPM 2.0
2 *
3 * The copyright in this software is being made available under the BSD License,
4 * included below. This software may be subject to other third party and
5 * contributor rights, including patent rights, and no such rights are granted
6 * under this license.
7 *
8 * Copyright (c) Microsoft Corporation
9 *
10 * All rights reserved.
11 *
12 * BSD License
13 *
14 * Redistribution and use in source and binary forms, with or without modification,
15 * are permitted provided that the following conditions are met:
16 *
17 * Redistributions of source code must retain the above copyright notice, this list
18 * of conditions and the following disclaimer.
19 *
20 * Redistributions in binary form must reproduce the above copyright notice, this
21 * list of conditions and the following disclaimer in the documentation and/or
22 * other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
28 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
31 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35 //** Description
36 // This file contains the common code for building a response header, including
37 // setting the size of the structure. 'command' may be NULL if result is
38 // not TPM_RC_SUCCESS.
39
40 //** Includes and Defines
41 #include "Tpm.h"
42
43 //** BuildResponseHeader()
44 // Adds the response header to the response. It will update command->parameterSize
45 // to indicate the total size of the response.
46 void
BuildResponseHeader(COMMAND * command,BYTE * buffer,TPM_RC result)47 BuildResponseHeader(
48 COMMAND *command, // IN: main control structure
49 BYTE *buffer, // OUT: the output buffer
50 TPM_RC result // IN: the response code
51 )
52 {
53 TPM_ST tag;
54 UINT32 size;
55
56 if(result != TPM_RC_SUCCESS)
57 {
58 tag = TPM_ST_NO_SESSIONS;
59 size = 10;
60 }
61 else
62 {
63 tag = command->tag;
64 // Compute the overall size of the response
65 size = STD_RESPONSE_HEADER + command->handleNum * sizeof(TPM_HANDLE);
66 size += command->parameterSize;
67 size += (command->tag == TPM_ST_SESSIONS) ?
68 command->authSize + sizeof(UINT32) : 0;
69 }
70 TPM_ST_Marshal(&tag, &buffer, NULL);
71 UINT32_Marshal(&size, &buffer, NULL);
72 TPM_RC_Marshal(&result, &buffer, NULL);
73 if(result == TPM_RC_SUCCESS)
74 {
75 if(command->handleNum > 0)
76 TPM_HANDLE_Marshal(&command->handles[0], &buffer, NULL);
77 if(tag == TPM_ST_SESSIONS)
78 UINT32_Marshal((UINT32 *)&command->parameterSize, &buffer, NULL);
79 }
80 command->parameterSize = size;
81 }