1 files changed, 134 insertions, 0 deletions
diff --git a/src/tcs/tcsi_pcr.c b/src/tcs/tcsi_pcr.c
new file mode 100644
index 0000000..2cb97e3
--- /dev/null
+++ b/src/tcs/tcsi_pcr.c
@@ -0,0 +1,134 @@
+
+/*
+ * Licensed Materials - Property of IBM
+ *
+ * trousers - An open source TCG Software Stack
+ *
+ * (C) Copyright International Business Machines Corp. 2004
+ * (C) Christian Kummer 2007
+ *
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "trousers/tss.h"
+#include "trousers_types.h"
+#include "tcs_tsp.h"
+#include "tcsps.h"
+#include "tcs_utils.h"
+#include "tcs_int_literals.h"
+#include "capabilities.h"
+#include "tcslog.h"
+#include "req_mgr.h"
+#include "tcsd_wrap.h"
+#include "tcsd.h"
+
+
+TSS_RESULT
+TCSP_Extend_Internal(TCS_CONTEXT_HANDLE hContext,	/* in */
+		     TCPA_PCRINDEX pcrNum,	/* in */
+		     TCPA_DIGEST inDigest,	/* in */
+		     TCPA_PCRVALUE * outDigest)	/* out */
+{
+	UINT64 offset = 0;
+	TSS_RESULT result;
+	UINT32 paramSize;
+	BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
+
+	LogDebug("Entering Extend");
+	if ((result = ctx_verify_context(hContext)))
+		return result;
+
+	/* PCRs are numbered 0 - (NUM_PCRS - 1), thus the >= */
+	if (pcrNum >= tpm_metrics.num_pcrs)
+		return TCSERR(TSS_E_BAD_PARAMETER);
+
+	if (tcsd_options.kernel_pcrs & (1 << pcrNum)) {
+		LogInfo("PCR %d is configured to be kernel controlled. Extend request denied.",
+				pcrNum);
+		return TCSERR(TSS_E_FAIL);
+	}
+
+	if (tcsd_options.firmware_pcrs & (1 << pcrNum)) {
+		LogInfo("PCR %d is configured to be firmware controlled. Extend request denied.",
+				pcrNum);
+		return TCSERR(TSS_E_FAIL);
+	}
+
+	if ((result = tpm_rqu_build(TPM_ORD_Extend, &offset, txBlob, pcrNum, TPM_DIGEST_SIZE,
+				    inDigest.digest, NULL, NULL)))
+		return result;
+
+	if ((result = req_mgr_submit_req(txBlob)))
+		return result;
+
+	result = UnloadBlob_Header(txBlob, &paramSize);
+	if (!result) {
+		result = tpm_rsp_parse(TPM_ORD_Extend, txBlob, paramSize, NULL, outDigest->digest);
+	}
+	LogResult("Extend", result);
+	return result;
+}
+
+TSS_RESULT
+TCSP_PcrRead_Internal(TCS_CONTEXT_HANDLE hContext,	/* in */
+		      TCPA_PCRINDEX pcrNum,		/* in */
+		      TCPA_PCRVALUE * outDigest)	/* out */
+{
+	UINT64 offset = 0;
+	TSS_RESULT result;
+	UINT32 paramSize;
+	BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
+
+	LogDebug("Entering PCRRead");
+
+	if ((result = ctx_verify_context(hContext)))
+		return result;
+
+	/* PCRs are numbered 0 - (NUM_PCRS - 1), thus the >= */
+	if (pcrNum >= tpm_metrics.num_pcrs)
+		return TCSERR(TSS_E_BAD_PARAMETER);
+
+	if ((result = tpm_rqu_build(TPM_ORD_PcrRead, &offset, txBlob, pcrNum, NULL)))
+		return result;
+
+	if ((result = req_mgr_submit_req(txBlob)))
+		return result;
+
+	result = UnloadBlob_Header(txBlob, &paramSize);
+	if (!result) {
+		result = tpm_rsp_parse(TPM_ORD_PcrRead, txBlob, paramSize, NULL, outDigest->digest);
+	}
+	LogResult("PCR Read", result);
+	return result;
+}
+
+TSS_RESULT
+TCSP_PcrReset_Internal(TCS_CONTEXT_HANDLE hContext,      /* in */
+		       UINT32 pcrDataSizeIn,             /* in */
+		       BYTE * pcrDataIn)                 /* in */
+{
+	UINT64 offset = 0;
+	TSS_RESULT result;
+	UINT32 paramSize;
+	BYTE txBlob[TSS_TPM_TXBLOB_SIZE];
+
+	LogDebug("Entering PCRReset");
+
+	if ((result = ctx_verify_context(hContext)))
+		return result;
+
+	if ((result = tpm_rqu_build(TPM_ORD_PCR_Reset, &offset, txBlob, pcrDataSizeIn, pcrDataIn)))
+		return result;
+
+	if ((result = req_mgr_submit_req(txBlob)))
+		return result;
+
+	result = UnloadBlob_Header(txBlob, &paramSize);
+	LogResult("PCR Reset", result);
+	return result;
+}