1 files changed, 98 insertions, 0 deletions
diff --git a/src/tpm2/StateMarshal.c b/src/tpm2/StateMarshal.c
new file mode 100644
index 0000000..fbb2662
--- /dev/null
+++ b/src/tpm2/StateMarshal.c
@@ -0,0 +1,98 @@
+/********************************************************************************/
+/*										*/
+/*			  Marshalling and unmarshalling of state		*/
+/*			     Written by Stefan Berger				*/
+/*		       IBM Thomas J. Watson Research Center			*/
+/*										*/
+/* (c) Copyright IBM Corporation 2017,2018.					*/
+/*										*/
+/* 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 names of the IBM 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		*/
+/* HOLDER 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 <stdlib.h>
+
+#include "config.h"
+
+#include "StateMarshal.h"
+#include "Volatile.h"
+
+#define TPM_HAVE_TPM2_DECLARATIONS
+#include "tpm_library_intern.h"
+#include "tpm_nvfilename.h"
+#include "tpm_error.h"
+#include "tpm_memory.h"
+
+UINT16
+VolatileSave(BYTE **buffer, INT32 *size)
+{
+    return VolatileState_Save(buffer, size);
+}
+
+TPM_RC
+VolatileLoad(BOOL *restored)
+{
+    TPM_RC rc = TPM_RC_SUCCESS;
+
+#ifdef TPM_LIBTPMS_CALLBACKS
+    unsigned char *data = NULL;
+    uint32_t length = 0;
+    struct libtpms_callbacks *cbs = TPMLIB_GetCallbacks();
+    TPM_RESULT ret = TPM_SUCCESS;
+    bool is_empty_state;
+
+    *restored = FALSE;
+
+    /* try to get state blob set via TPMLIB_SetState() */
+    GetCachedState(TPMLIB_STATE_VOLATILE, &data, &length, &is_empty_state);
+    if (is_empty_state)
+        return rc;
+
+    if (!data && cbs->tpm_nvram_loaddata) {
+        uint32_t tpm_number = 0;
+        const char *name = TPM_VOLATILESTATE_NAME;
+
+        ret = cbs->tpm_nvram_loaddata(&data, &length, tpm_number, name);
+    }
+
+    if (data && ret == TPM_SUCCESS) {
+        unsigned char *p = data;
+        rc = VolatileState_Load(&data, (INT32 *)&length);
+        /*
+         * if this failed, VolatileState_Load will have started
+         * failure mode.
+         */
+        free(p);
+
+        *restored = (rc == 0);
+    }
+#endif /* TPM_LIBTPMS_CALLBACKS */
+
+    return rc;
+}