1 files changed, 81 insertions, 0 deletions
diff --git a/argon2/is_algorithm.c b/argon2/is_algorithm.c
new file mode 100644
index 0000000..96a889a
--- /dev/null
+++ b/argon2/is_algorithm.c
@@ -0,0 +1,81 @@
+/* See LICENSE file for copyright and license details. */
+#include "../common.h"
+#ifndef TEST
+
+
+#define DECLARE_IS_ALGORITHM(ALGO)\
+	unsigned\
+	librecrypt__##ALGO##__is_algorithm(const char *settings, size_t len)\
+	{\
+		return len >= sizeof("$"#ALGO"$") - 1u && !strncmp(settings, "$"#ALGO"$", sizeof("$"#ALGO"$") - 1u);\
+	}
+
+IF__argon2i__SUPPORTED(DECLARE_IS_ALGORITHM(argon2i))
+IF__argon2d__SUPPORTED(DECLARE_IS_ALGORITHM(argon2d))
+IF__argon2id__SUPPORTED(DECLARE_IS_ALGORITHM(argon2id))
+IF__argon2ds__SUPPORTED(DECLARE_IS_ALGORITHM(argon2ds))
+
+
+#else
+
+
+#define CHECK(ALGO, PREFIX, SUFFIX, RET)\
+	EXPECT(librecrypt__##ALGO##__is_algorithm(PREFIX SUFFIX, sizeof(PREFIX) - 1u) == (RET))
+
+
+int
+main(void)
+{
+#if defined(SUPPORT_ARGON2I)
+	CHECK(argon2i, "", "", 0u);
+	CHECK(argon2i, "$argon2$", "", 0u);
+	CHECK(argon2i, "$argon2i", "$", 0u);
+	CHECK(argon2i, "$argon2i$", "", 1u);
+	CHECK(argon2i, "$ARGON2I$", "", 0u);
+	CHECK(argon2i, "$argon2i$x", "", 1u);
+	CHECK(argon2i, "$argon2d$", "", 0u);
+	CHECK(argon2i, "$argon2id$", "", 0u);
+	CHECK(argon2i, "$argon2ds$", "", 0u);
+#endif
+
+#if defined(SUPPORT_ARGON2D)
+	CHECK(argon2d, "", "", 0u);
+	CHECK(argon2d, "$argon2$", "", 0u);
+	CHECK(argon2d, "$argon2d", "$", 0u);
+	CHECK(argon2d, "$argon2d$", "", 1u);
+	CHECK(argon2d, "$ARGON2D$", "", 0u);
+	CHECK(argon2d, "$argon2d$x", "", 1u);
+	CHECK(argon2d, "$argon2i$", "", 0u);
+	CHECK(argon2d, "$argon2id$", "", 0u);
+	CHECK(argon2d, "$argon2ds$", "", 0u);
+#endif
+
+#if defined(SUPPORT_ARGON2ID)
+	CHECK(argon2id, "", "", 0u);
+	CHECK(argon2id, "$argon2$", "", 0u);
+	CHECK(argon2id, "$argon2id", "$", 0u);
+	CHECK(argon2id, "$argon2id$", "", 1u);
+	CHECK(argon2id, "$ARGON2ID$", "", 0u);
+	CHECK(argon2id, "$argon2id$x", "", 1u);
+	CHECK(argon2id, "$argon2i$", "", 0u);
+	CHECK(argon2id, "$argon2d$", "", 0u);
+	CHECK(argon2id, "$argon2ds$", "", 0u);
+#endif
+
+#if defined(SUPPORT_ARGON2DS)
+	CHECK(argon2ds, "", "", 0u);
+	CHECK(argon2ds, "$argon2$", "", 0u);
+	CHECK(argon2ds, "$argon2ds", "$", 0u);
+	CHECK(argon2ds, "$argon2ds$", "", 1u);
+	CHECK(argon2ds, "$ARGON2DS$", "", 0u);
+	CHECK(argon2ds, "$argon2ds$x", "", 1u);
+	CHECK(argon2ds, "$argon2i$", "", 0u);
+	CHECK(argon2ds, "$argon2d$", "", 0u);
+	CHECK(argon2ds, "$argon2id$", "", 0u);
+#endif
+
+	return 0;
+}
+
+
+#endif