Add microdesc format fuzzer.

1 files changed, 45 insertions, 0 deletions

diff --git a/src/test/fuzz/fuzz_microdesc.c b/src/test/fuzz/fuzz_microdesc.c
new file mode 100644
index 0000000000..bb944595fe
--- /dev/null
+++ b/src/test/fuzz/fuzz_microdesc.c
@@ -0,0 +1,45 @@
+#define ROUTERPARSE_PRIVATE
+#include "or.h"
+#include "routerparse.h"
+#include "microdesc.h"
+#include "fuzzing.h"
+
+static void
+mock_dump_desc__nodump(const char *desc, const char *type)
+{
+  (void)desc;
+  (void)type;
+}
+
+int
+fuzz_init(void)
+{
+  disable_signature_checking();
+  MOCK(dump_desc, mock_dump_desc__nodump);
+  ed25519_init();
+  return 0;
+}
+
+int
+fuzz_cleanup(void)
+{
+  return 0;
+}
+
+int
+fuzz_main(const uint8_t *data, size_t sz)
+{
+  const char *str = (const char*) data;
+  smartlist_t *result = microdescs_parse_from_string((const char *)str,
+                                                     str+sz,
+                                                     0, SAVED_NOWHERE, NULL);
+  if (result) {
+    log_debug(LD_GENERAL, "Parsing okay: %d", smartlist_len(result));
+    SMARTLIST_FOREACH(result, microdesc_t *, md, microdesc_free(md));
+    smartlist_free(result);
+  } else {
+    log_debug(LD_GENERAL, "Parsing failed");
+  }
+  return 0;
+}
+