1 files changed, 133 insertions, 0 deletions
diff --git a/bin/tests/optional/entropy_test.c b/bin/tests/optional/entropy_test.c
new file mode 100644
index 0000000..67ec640
--- /dev/null
+++ b/bin/tests/optional/entropy_test.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <isc/entropy.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+static void
+hex_dump(const char *msg, void *data, unsigned int length) {
+	unsigned int len;
+	unsigned char *base;
+	bool first = true;
+
+	base = data;
+
+	printf("DUMP of %u bytes:  %s\n\t", length, msg);
+	for (len = 0; len < length; len++) {
+		if (len % 16 == 0 && !first)
+			printf("\n\t");
+		printf("%02x ", base[len]);
+		first = false;
+	}
+	printf("\n");
+}
+
+static void
+CHECK(const char *msg, isc_result_t result) {
+	if (result != ISC_R_SUCCESS) {
+		printf("FAILURE:  %s:  %s\n", msg, isc_result_totext(result));
+		exit(1);
+	}
+}
+
+int
+main(int argc, char **argv) {
+	isc_mem_t *mctx;
+	unsigned char buffer[512];
+	isc_entropy_t *ent;
+	unsigned int returned;
+	unsigned int flags;
+	isc_result_t result;
+
+	UNUSED(argc);
+	UNUSED(argv);
+
+	mctx = NULL;
+	CHECK("isc_mem_create()",
+	      isc_mem_create(0, 0, &mctx));
+
+	ent = NULL;
+	CHECK("isc_entropy_create()",
+	      isc_entropy_create(mctx, &ent));
+
+	isc_entropy_stats(ent, stderr);
+
+#if 1
+	CHECK("isc_entropy_createfilesource() 1",
+	      isc_entropy_createfilesource(ent, "/dev/random"));
+	CHECK("isc_entropy_createfilesource() 2",
+	      isc_entropy_createfilesource(ent, "/dev/random"));
+#else
+	CHECK("isc_entropy_createfilesource() 3",
+	      isc_entropy_createfilesource(ent, "/tmp/foo"));
+#endif
+
+	fprintf(stderr,
+		"Reading 32 bytes of GOOD random data only, partial OK\n");
+
+	flags = 0;
+	flags |= ISC_ENTROPY_GOODONLY;
+	flags |= ISC_ENTROPY_PARTIAL;
+	result = isc_entropy_getdata(ent, buffer, 32, &returned, flags);
+	if (result == ISC_R_NOENTROPY) {
+		fprintf(stderr, "No entropy.\n");
+		goto any;
+	}
+	hex_dump("good data only:", buffer, returned);
+
+ any:
+	isc_entropy_stats(ent, stderr);
+	CHECK("isc_entropy_getdata() pseudorandom",
+	      isc_entropy_getdata(ent, buffer, 128, NULL, 0));
+	hex_dump("pseudorandom data", buffer, 128);
+
+	isc_entropy_stats(ent, stderr);
+	flags = 0;
+	flags |= ISC_ENTROPY_GOODONLY;
+	flags |= ISC_ENTROPY_BLOCKING;
+	result = isc_entropy_getdata(ent, buffer, sizeof(buffer), &returned,
+				     flags);
+	CHECK("good data only, blocking mode", result);
+	hex_dump("blocking mode data", buffer, sizeof(buffer));
+
+	{
+		isc_entropy_t *entcopy1 = NULL;
+		isc_entropy_t *entcopy2 = NULL;
+		isc_entropy_t *entcopy3 = NULL;
+
+		isc_entropy_attach(ent, &entcopy1);
+		isc_entropy_attach(ent, &entcopy2);
+		isc_entropy_attach(ent, &entcopy3);
+
+		isc_entropy_stats(ent, stderr);
+
+		isc_entropy_detach(&entcopy1);
+		isc_entropy_detach(&entcopy2);
+		isc_entropy_detach(&entcopy3);
+	}
+
+	isc_entropy_detach(&ent);
+	isc_mem_stats(mctx, stderr);
+	isc_mem_destroy(&mctx);
+
+	return (0);
+}