1 files changed, 90 insertions, 0 deletions
diff --git a/bin/tests/system/rndc/gencheck.c b/bin/tests/system/rndc/gencheck.c
new file mode 100644
index 0000000..7949b66
--- /dev/null
+++ b/bin/tests/system/rndc/gencheck.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * 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 https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <isc/print.h>
+
+#define USAGE "usage: gencheck <filename>\n"
+
+static int
+check(const char *buf, ssize_t count, size_t *start) {
+	const char chars[] = "abcdefghijklmnopqrstuvwxyz0123456789";
+	ssize_t i;
+
+	for (i = 0; i < count; i++, *start = (*start + 1) % (sizeof(chars) - 1))
+	{
+		/* Just ignore the trailing newline */
+		if (buf[i] == '\n') {
+			continue;
+		}
+		if (buf[i] != chars[*start]) {
+			return (0);
+		}
+	}
+
+	return (1);
+}
+
+int
+main(int argc, char **argv) {
+	int ret;
+	int fd;
+	ssize_t count;
+	char buf[1024];
+	size_t start;
+	size_t length;
+
+	ret = EXIT_FAILURE;
+	fd = -1;
+	length = 0;
+
+	if (argc != 2) {
+		fprintf(stderr, USAGE);
+		goto out;
+	}
+
+	fd = open(argv[1], O_RDONLY);
+	if (fd == -1) {
+		goto out;
+	}
+
+	start = 0;
+	while ((count = read(fd, buf, sizeof(buf))) != 0) {
+		if (count < 0) {
+			goto out;
+		}
+
+		if (!check(buf, count, &start)) {
+			goto out;
+		}
+
+		length += count;
+	}
+
+	ret = EXIT_SUCCESS;
+
+out:
+	printf("%lu\n", (unsigned long)length);
+
+	if (fd != -1) {
+		close(fd);
+	}
+
+	return (ret);
+}