From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Mon, 11 Mar 2019 11:43:00 +0000 (+0100)
Subject: fuzz: add hostname-util fuzzer
X-Git-Tag: v242-rc1~166^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=04ddab1462f53430b3977362428dea20b8ee3122;p=thirdparty%2Fsystemd.git

fuzz: add hostname-util fuzzer
---

diff --git a/src/fuzz/fuzz-hostname-util.c b/src/fuzz/fuzz-hostname-util.c
new file mode 100644
index 00000000000..deaf8112ba2
--- /dev/null
+++ b/src/fuzz/fuzz-hostname-util.c
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <errno.h>
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "fuzz.h"
+#include "hostname-util.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_free_ char *ret = NULL;
+
+        if (size == 0)
+                return 0;
+
+        f = fmemopen((char*) data, size, "re");
+        assert_se(f);
+
+        /* We don't want to fill the logs with messages about parse errors.
+         * Disable most logging if not running standalone */
+        if (!getenv("SYSTEMD_LOG_LEVEL"))
+                log_set_max_level(LOG_CRIT);
+
+        (void) read_etc_hostname_stream(f, &ret);
+
+        return 0;
+}
diff --git a/src/fuzz/meson.build b/src/fuzz/meson.build
index d09006f640f..e851d4e7640 100644
--- a/src/fuzz/meson.build
+++ b/src/fuzz/meson.build
@@ -120,4 +120,8 @@ fuzzers += [
         [['src/fuzz/fuzz-env-file.c'],
          [libshared],
          []],
+
+        [['src/fuzz/fuzz-hostname-util.c'],
+         [libshared],
+         []],
 ]