fuzz: add a fuzzer for calendarspec

1 files changed, 24 insertions, 0 deletions

diff --git a/src/fuzz/fuzz-calendarspec.c b/src/fuzz/fuzz-calendarspec.c
new file mode 100644
index 0000000000..55d8613494
--- /dev/null
+++ b/src/fuzz/fuzz-calendarspec.c
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include "alloc-util.h"
+#include "calendarspec.h"
+#include "fd-util.h"
+#include "fuzz.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        _cleanup_(calendar_spec_freep) CalendarSpec *cspec = NULL;
+        _cleanup_free_ char *str = NULL, *p = NULL;
+
+        if (!getenv("SYSTEMD_LOG_LEVEL"))
+                log_set_max_level(LOG_CRIT);
+
+        str = memdup_suffix0(data, size);
+
+        if (calendar_spec_from_string(str, &cspec) > 0) {
+                (void) calendar_spec_valid(cspec);
+                (void) calendar_spec_normalize(cspec);
+                (void) calendar_spec_to_string(cspec, &p);
+        }
+
+        return 0;
+}