1 files changed, 115 insertions, 0 deletions
diff --git a/tests/rng-fork.c b/tests/rng-fork.c
new file mode 100644
index 0000000..e4a374a
--- /dev/null
+++ b/tests/rng-fork.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2008-2012 Free Software Foundation, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GnuTLS.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <assert.h>
+#if !defined(_WIN32)
+#include <sys/wait.h>
+#endif
+
+#include "utils.h"
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+
+#if !defined(_WIN32)
+static void dump(const char *name, unsigned char *buf, int buf_size)
+{
+	int i;
+	printf("%s: ", name);
+	for (i = 0; i < buf_size; i++)
+		printf("%.2x:", buf[i]);
+	printf("\n");
+}
+
+#define FILENAME "./rng-test"
+
+void doit(void)
+{
+	unsigned char buf1[64];
+	unsigned char buf2[64];
+	pid_t pid;
+	int ret;
+	FILE *fp;
+	unsigned i;
+
+	global_init();
+
+	for (i = GNUTLS_RND_NONCE; i <= GNUTLS_RND_KEY; i++) {
+		pid = fork();
+		if (pid == 0) {
+			fp = fopen(FILENAME, "w");
+			if (fp == NULL)
+				fail("cannot open file");
+
+			assert(gnutls_rnd(i, buf1, sizeof(buf1)) >= 0);
+			if (debug)
+				dump("buf1", buf1, sizeof(buf1));
+
+			fwrite(buf1, 1, sizeof(buf1), fp);
+			fclose(fp);
+			gnutls_global_deinit();
+			exit(0);
+		} else {
+			/* daddy */
+			assert(gnutls_rnd(i, buf2, sizeof(buf2)) >= 0);
+			if (debug)
+				dump("buf2", buf2, sizeof(buf2));
+			waitpid(pid, NULL, 0);
+
+			fp = fopen(FILENAME, "r");
+			if (fp == NULL)
+				fail("cannot open file");
+
+			ret = fread(buf1, 1, sizeof(buf1), fp);
+
+			fclose(fp);
+			remove(FILENAME);
+
+			if (ret != sizeof(buf1)) {
+				fail("error testing the random generator (%u).\n", i);
+				return;
+			}
+
+			if (memcmp(buf1, buf2, sizeof(buf1)) == 0) {
+				fail("error in the random generator (%u). Produces same valus after fork()\n", i);
+				return;
+			}
+			if (debug)
+				success("success\n");
+		}
+	}
+
+	gnutls_global_deinit();
+}
+#else
+void doit(void)
+{
+	exit(77);
+}
+#endif