Bug 1326416 - Update libFuzzer revision r=franziskus

Differential Revision: https://nss-review.dev.mozaws.net/D132

1 files changed, 21 insertions, 0 deletions

diff --git a/fuzz/shared.h b/fuzz/shared.h
index 09d805ed8..107024904 100644
--- a/fuzz/shared.h
+++ b/fuzz/shared.h
@@ -7,6 +7,7 @@
 #ifndef shared_h__
 #define shared_h__
 
+#include "cert.h"
 #include "nss.h"
 
 class NSSDatabase {
@@ -15,4 +16,24 @@ class NSSDatabase {
   ~NSSDatabase() { NSS_Shutdown(); }
 };
 
+void QuickDERDecode(void *dst, const SEC_ASN1Template *tpl, const uint8_t *buf,
+                    size_t len) {
+  PORTCheapArenaPool pool;
+  SECItem data = {siBuffer, const_cast<unsigned char *>(buf),
+                  static_cast<unsigned int>(len)};
+
+  PORT_InitCheapArena(&pool, DER_DEFAULT_CHUNKSIZE);
+  (void)SEC_QuickDERDecodeItem(&pool.arena, dst, tpl, &data);
+  PORT_DestroyCheapArena(&pool);
+}
+
+#define ADD_CUSTOM_MUTATORS(...)                                             \
+  extern "C" size_t LLVMFuzzerCustomMutator(                                 \
+      uint8_t *Data, size_t Size, size_t MaxSize, unsigned int Seed) {       \
+    std::vector<decltype(LLVMFuzzerCustomMutator) *> mutators = __VA_ARGS__; \
+    fuzzer::Random R(Seed);                                                  \
+    auto idx = R(mutators.size());                                           \
+    return mutators.at(idx)(Data, Size, MaxSize, Seed);                      \
+  }
+
 #endif  // shared_h__