1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (c) 2010-2012 United States Government, as represented by
* the Secretary of Defense. All rights reserved.
*
* based off of the original tools/vtpm_manager code base which is:
* Copyright (c) 2005, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include "marshal.h"
#include "log.h"
#include "vtpm_storage.h"
#include "vtpmmgr.h"
#include "tpm.h"
#include "tcg.h"
static TPM_RESULT vtpmmgr_SaveHashKey(
const uuid_t uuid,
tpmcmd_t* tpmcmd)
{
TPM_RESULT status = TPM_SUCCESS;
if(tpmcmd->req_len != VTPM_COMMAND_HEADER_SIZE + HASHKEYSZ) {
vtpmlogerror(VTPM_LOG_VTPM, "VTPM_ORD_SAVEHASHKEY hashkey too short!\n");
status = TPM_BAD_PARAMETER;
goto abort_egress;
}
/* Do the command */
TPMTRYRETURN(vtpm_storage_save_hashkey(uuid, tpmcmd->req + VTPM_COMMAND_HEADER_SIZE));
abort_egress:
pack_TPM_RSP_HEADER(tpmcmd->resp,
VTPM_TAG_RSP, VTPM_COMMAND_HEADER_SIZE, status);
tpmcmd->resp_len = VTPM_COMMAND_HEADER_SIZE;
return status;
}
static TPM_RESULT vtpmmgr_LoadHashKey(
const uuid_t uuid,
tpmcmd_t* tpmcmd) {
TPM_RESULT status = TPM_SUCCESS;
tpmcmd->resp_len = VTPM_COMMAND_HEADER_SIZE;
TPMTRYRETURN(vtpm_storage_load_hashkey(uuid, tpmcmd->resp + VTPM_COMMAND_HEADER_SIZE));
tpmcmd->resp_len += HASHKEYSZ;
abort_egress:
pack_TPM_RSP_HEADER(tpmcmd->resp,
VTPM_TAG_RSP, tpmcmd->resp_len, status);
return status;
}
TPM_RESULT vtpmmgr_handle_cmd(
const uuid_t uuid,
tpmcmd_t* tpmcmd)
{
TPM_RESULT status = TPM_SUCCESS;
TPM_TAG tag;
UINT32 size;
TPM_COMMAND_CODE ord;
unpack_TPM_RQU_HEADER(tpmcmd->req,
&tag, &size, &ord);
/* Handle the command now */
switch(tag) {
case VTPM_TAG_REQ:
//This is a vTPM command
switch(ord) {
case VTPM_ORD_SAVEHASHKEY:
return vtpmmgr_SaveHashKey(uuid, tpmcmd);
case VTPM_ORD_LOADHASHKEY:
return vtpmmgr_LoadHashKey(uuid, tpmcmd);
default:
vtpmlogerror(VTPM_LOG_VTPM, "Invalid vTPM Ordinal %" PRIu32 "\n", ord);
status = TPM_BAD_ORDINAL;
}
break;
case TPM_TAG_RQU_COMMAND:
case TPM_TAG_RQU_AUTH1_COMMAND:
case TPM_TAG_RQU_AUTH2_COMMAND:
//This is a TPM passthrough command
switch(ord) {
case TPM_ORD_GetRandom:
vtpmloginfo(VTPM_LOG_VTPM, "Passthrough: TPM_GetRandom\n");
break;
case TPM_ORD_PcrRead:
vtpmloginfo(VTPM_LOG_VTPM, "Passthrough: TPM_PcrRead\n");
break;
default:
vtpmlogerror(VTPM_LOG_VTPM, "TPM Disallowed Passthrough ord=%" PRIu32 "\n", ord);
status = TPM_DISABLED_CMD;
goto abort_egress;
}
size = TCPA_MAX_BUFFER_LENGTH;
TPMTRYRETURN(TPM_TransmitData(tpmcmd->req, tpmcmd->req_len, tpmcmd->resp, &size));
tpmcmd->resp_len = size;
unpack_TPM_RESULT(tpmcmd->resp + sizeof(TPM_TAG) + sizeof(UINT32), &status);
return status;
break;
default:
vtpmlogerror(VTPM_LOG_VTPM, "Invalid tag=%" PRIu16 "\n", tag);
status = TPM_BADTAG;
}
abort_egress:
tpmcmd->resp_len = VTPM_COMMAND_HEADER_SIZE;
pack_TPM_RSP_HEADER(tpmcmd->resp,
tag + 3, tpmcmd->resp_len, status);
return status;
}
|
