1
2 /*
3 * Licensed Materials - Property of IBM
4 *
5 * trousers - An open source TCG Software Stack
6 *
7 * (C) Copyright International Business Machines Corp. 2004
8 * (C) Christian Kummer 2007
9 *
10 */
11
12
13 #include <stdlib.h>
14 #include <stdio.h>
15 #include <string.h>
16 #include <inttypes.h>
17
18 #include "trousers/tss.h"
19 #include "trousers_types.h"
20 #include "tcs_tsp.h"
21 #include "tcsps.h"
22 #include "tcs_utils.h"
23 #include "tcs_int_literals.h"
24 #include "capabilities.h"
25 #include "tcslog.h"
26 #include "req_mgr.h"
27 #include "tcsd_wrap.h"
28 #include "tcsd.h"
29
30
31 TSS_RESULT
TCSP_Extend_Internal(TCS_CONTEXT_HANDLE hContext,TCPA_PCRINDEX pcrNum,TCPA_DIGEST inDigest,TCPA_PCRVALUE * outDigest)32 TCSP_Extend_Internal(TCS_CONTEXT_HANDLE hContext, /* in */
33 TCPA_PCRINDEX pcrNum, /* in */
34 TCPA_DIGEST inDigest, /* in */
35 TCPA_PCRVALUE * outDigest) /* out */
36 {
37 UINT64 offset = 0;
38 TSS_RESULT result;
39 UINT32 paramSize;
40 BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
41
42 LogDebug("Entering Extend");
43 if ((result = ctx_verify_context(hContext)))
44 return result;
45
46 /* PCRs are numbered 0 - (NUM_PCRS - 1), thus the >= */
47 if (pcrNum >= tpm_metrics.num_pcrs)
48 return TCSERR(TSS_E_BAD_PARAMETER);
49
50 if (tcsd_options.kernel_pcrs & (1 << pcrNum)) {
51 LogInfo("PCR %d is configured to be kernel controlled. Extend request denied.",
52 pcrNum);
53 return TCSERR(TSS_E_FAIL);
54 }
55
56 if (tcsd_options.firmware_pcrs & (1 << pcrNum)) {
57 LogInfo("PCR %d is configured to be firmware controlled. Extend request denied.",
58 pcrNum);
59 return TCSERR(TSS_E_FAIL);
60 }
61
62 if ((result = tpm_rqu_build(TPM_ORD_Extend, &offset, txBlob, pcrNum, TPM_DIGEST_SIZE,
63 inDigest.digest, NULL, NULL)))
64 return result;
65
66 if ((result = req_mgr_submit_req(txBlob)))
67 return result;
68
69 result = UnloadBlob_Header(txBlob, ¶mSize);
70 if (!result) {
71 result = tpm_rsp_parse(TPM_ORD_Extend, txBlob, paramSize, NULL, outDigest->digest);
72 }
73 LogResult("Extend", result);
74 return result;
75 }
76
77 TSS_RESULT
TCSP_PcrRead_Internal(TCS_CONTEXT_HANDLE hContext,TCPA_PCRINDEX pcrNum,TCPA_PCRVALUE * outDigest)78 TCSP_PcrRead_Internal(TCS_CONTEXT_HANDLE hContext, /* in */
79 TCPA_PCRINDEX pcrNum, /* in */
80 TCPA_PCRVALUE * outDigest) /* out */
81 {
82 UINT64 offset = 0;
83 TSS_RESULT result;
84 UINT32 paramSize;
85 BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
86
87 LogDebug("Entering PCRRead");
88
89 if ((result = ctx_verify_context(hContext)))
90 return result;
91
92 /* PCRs are numbered 0 - (NUM_PCRS - 1), thus the >= */
93 if (pcrNum >= tpm_metrics.num_pcrs)
94 return TCSERR(TSS_E_BAD_PARAMETER);
95
96 if ((result = tpm_rqu_build(TPM_ORD_PcrRead, &offset, txBlob, pcrNum, NULL)))
97 return result;
98
99 if ((result = req_mgr_submit_req(txBlob)))
100 return result;
101
102 result = UnloadBlob_Header(txBlob, ¶mSize);
103 if (!result) {
104 result = tpm_rsp_parse(TPM_ORD_PcrRead, txBlob, paramSize, NULL, outDigest->digest);
105 }
106 LogResult("PCR Read", result);
107 return result;
108 }
109
110 TSS_RESULT
TCSP_PcrReset_Internal(TCS_CONTEXT_HANDLE hContext,UINT32 pcrDataSizeIn,BYTE * pcrDataIn)111 TCSP_PcrReset_Internal(TCS_CONTEXT_HANDLE hContext, /* in */
112 UINT32 pcrDataSizeIn, /* in */
113 BYTE * pcrDataIn) /* in */
114 {
115 UINT64 offset = 0;
116 TSS_RESULT result;
117 UINT32 paramSize;
118 BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
119
120 LogDebug("Entering PCRReset");
121
122 if ((result = ctx_verify_context(hContext)))
123 return result;
124
125 if ((result = tpm_rqu_build(TPM_ORD_PCR_Reset, &offset, txBlob, pcrDataSizeIn, pcrDataIn)))
126 return result;
127
128 if ((result = req_mgr_submit_req(txBlob)))
129 return result;
130
131 result = UnloadBlob_Header(txBlob, ¶mSize);
132 LogResult("PCR Reset", result);
133 return result;
134 }
135