Import upstream release 5.2.1

1 files changed, 176 insertions, 0 deletions

diff --git a/src/libimcv/pts/pts_meas_algo.c b/src/libimcv/pts/pts_meas_algo.c
new file mode 100644
index 000000000..c06371123
--- /dev/null
+++ b/src/libimcv/pts/pts_meas_algo.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2011-2014 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 "pts_meas_algo.h"
+
+#include <utils/debug.h>
+
+ENUM_BEGIN(pts_meas_algorithm_names, PTS_MEAS_ALGO_NONE, PTS_MEAS_ALGO_NONE,
+	"None");
+ENUM_NEXT(pts_meas_algorithm_names,	PTS_MEAS_ALGO_SHA384, PTS_MEAS_ALGO_SHA384,
+									PTS_MEAS_ALGO_NONE,
+	"SHA384");
+ENUM_NEXT(pts_meas_algorithm_names,	PTS_MEAS_ALGO_SHA256, PTS_MEAS_ALGO_SHA256,
+									PTS_MEAS_ALGO_SHA384,
+	"SHA256");
+ENUM_NEXT(pts_meas_algorithm_names,	PTS_MEAS_ALGO_SHA1, PTS_MEAS_ALGO_SHA1,
+									PTS_MEAS_ALGO_SHA256,
+	"SHA1");
+ENUM_END(pts_meas_algorithm_names,  PTS_MEAS_ALGO_SHA1);
+
+/**
+ * Described in header.
+ */
+bool pts_meas_algo_probe(pts_meas_algorithms_t *algorithms)
+{
+	enumerator_t *enumerator;
+	hash_algorithm_t hash_alg;
+	const char *plugin_name;
+	char format1[] = "  %s PTS measurement algorithm %N[%s] available";
+	char format2[] = "  %s PTS measurement algorithm %N not available";
+
+	*algorithms = 0;
+
+	enumerator = lib->crypto->create_hasher_enumerator(lib->crypto);
+	while (enumerator->enumerate(enumerator, &hash_alg, &plugin_name))
+	{
+		if (hash_alg == HASH_SHA1)
+		{
+			*algorithms |= PTS_MEAS_ALGO_SHA1;
+			DBG2(DBG_PTS, format1, "mandatory", hash_algorithm_names, hash_alg,
+								  plugin_name);
+		}
+		else if (hash_alg == HASH_SHA256)
+		{
+			*algorithms |= PTS_MEAS_ALGO_SHA256;
+			DBG2(DBG_PTS, format1, "mandatory", hash_algorithm_names, hash_alg,
+								  plugin_name);
+		}
+		else if (hash_alg == HASH_SHA384)
+		{
+			*algorithms |= PTS_MEAS_ALGO_SHA384;
+			DBG2(DBG_PTS, format1, "optional ", hash_algorithm_names, hash_alg,
+								  plugin_name);
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	if (!(*algorithms & PTS_MEAS_ALGO_SHA384))
+	{
+		DBG1(DBG_PTS, format2, "optional ", hash_algorithm_names, HASH_SHA384);
+	}
+	if ((*algorithms & PTS_MEAS_ALGO_SHA1) &&
+		(*algorithms & PTS_MEAS_ALGO_SHA256))
+	{
+		return TRUE;
+	}
+	if (!(*algorithms & PTS_MEAS_ALGO_SHA1))
+	{
+		DBG1(DBG_PTS, format2, "mandatory", hash_algorithm_names, HASH_SHA1);
+	}
+	if (!(*algorithms & PTS_MEAS_ALGO_SHA256))
+	{
+		DBG1(DBG_PTS, format2, "mandatory", hash_algorithm_names, HASH_SHA256);
+	}
+	return FALSE;
+}
+
+/**
+ * Described in header.
+ */
+bool pts_meas_algo_update(char *hash_alg, pts_meas_algorithms_t *algorithms)
+{
+	if (strcaseeq(hash_alg, "sha384") || strcaseeq(hash_alg, "sha2_384"))
+	{
+		/* nothing to update, all algorithms are supported */
+		return TRUE;
+	}
+	if (strcaseeq(hash_alg, "sha256") || strcaseeq(hash_alg, "sha2_256"))
+	{
+		/* remove SHA384algorithm */
+		*algorithms &= ~PTS_MEAS_ALGO_SHA384;
+		return TRUE;
+	}
+	if (strcaseeq(hash_alg, "sha1"))
+	{
+		/* remove SHA384 and SHA256 algorithms */
+		*algorithms &= ~(PTS_MEAS_ALGO_SHA384 | PTS_MEAS_ALGO_SHA256);
+		return TRUE;
+	}
+	DBG1(DBG_PTS, "unknown hash algorithm '%s' configured", hash_alg);
+	return FALSE;
+}
+
+/**
+ * Described in header.
+ */
+pts_meas_algorithms_t pts_meas_algo_select(pts_meas_algorithms_t supported_algos,
+										   pts_meas_algorithms_t offered_algos)
+{
+	if ((supported_algos & PTS_MEAS_ALGO_SHA384) &&
+		(offered_algos   & PTS_MEAS_ALGO_SHA384))
+	{
+		return PTS_MEAS_ALGO_SHA384;
+	}
+	if ((supported_algos & PTS_MEAS_ALGO_SHA256) &&
+		(offered_algos   & PTS_MEAS_ALGO_SHA256))
+	{
+		return PTS_MEAS_ALGO_SHA256;
+	}
+	if ((supported_algos & PTS_MEAS_ALGO_SHA1) &&
+		(offered_algos   & PTS_MEAS_ALGO_SHA1))
+	{
+		return PTS_MEAS_ALGO_SHA1;
+	}
+	return PTS_MEAS_ALGO_NONE;
+}
+
+/**
+ * Described in header.
+ */
+hash_algorithm_t pts_meas_algo_to_hash(pts_meas_algorithms_t algorithm)
+{
+	switch (algorithm)
+	{
+		case PTS_MEAS_ALGO_SHA1:
+			return HASH_SHA1;
+		case PTS_MEAS_ALGO_SHA256:
+			return HASH_SHA256;
+		case PTS_MEAS_ALGO_SHA384:
+			return HASH_SHA384;
+		default:
+			return HASH_UNKNOWN;
+	}
+}
+
+/**
+ * Described in header.
+ */
+size_t pts_meas_algo_hash_size(pts_meas_algorithms_t algorithm)
+{
+	switch (algorithm)
+	{
+		case PTS_MEAS_ALGO_SHA1:
+			return HASH_SIZE_SHA1;
+		case PTS_MEAS_ALGO_SHA256:
+			return HASH_SIZE_SHA256;
+		case PTS_MEAS_ALGO_SHA384:
+			return HASH_SIZE_SHA384;
+		case PTS_MEAS_ALGO_NONE:
+		default:
+			return 0;
+	}
+}
+