Created libtpmtss library handling access to v1.2 and v2.0 TPMs

src/libtpmtss/tpm_tss.c

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2016 Andreas Steffen
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "tpm_tss.h"
+#include "tpm_tss_tss2.h"
+#include "tpm_tss_trousers.h"
+
+typedef tpm_tss_t*(*tpm_tss_create)();
+
+/**
+ * See header.
+ */
+tpm_tss_t *tpm_tss_probe(tpm_version_t version)
+{
+	tpm_tss_create stacks[] = {
+		tpm_tss_tss2_create,
+		tpm_tss_trousers_create,
+	};
+	tpm_tss_t *tpm;
+	int i;
+
+	for (i = 0; i < countof(stacks); i++)
+	{
+		tpm = stacks[i]();
+		if (tpm)
+		{
+			if (version == TPM_VERSION_ANY || version == tpm->get_version(tpm))
+			{
+				return tpm;
+			}
+		}
+	}
+	return NULL;
+}