fuzz: Adding lazy map threshold conf to headermap fuzzer (envoyproxy#…

…13402) Adding lazy map threshold config to headermap fuzzer Signed-off-by: Adi Suissa-Peleg <[email protected]>
Sonam11 · Oct 8, 2020 · 850a0f2 · 850a0f2
1 parent 5d12b67
commit 850a0f2
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diff --git a/test/common/http/BUILD b/test/common/http/BUILD
@@ -308,6 +308,7 @@ envoy_cc_fuzz_test(
         ":header_map_impl_fuzz_proto_cc_proto",
         "//source/common/http:header_map_lib",
         "//test/fuzz:utility_lib",
+        "//test/test_common:test_runtime_lib",
     ],
 )
 

diff --git a/test/common/http/header_map_impl_corpus/example_lazymap b/test/common/http/header_map_impl_corpus/example_lazymap
diff --git a/test/common/http/header_map_impl_fuzz.proto b/test/common/http/header_map_impl_fuzz.proto
@@ -88,6 +88,12 @@ message Action {
   }
 }
 
+message Config {
+  uint32 lazy_map_min_size = 1;
+}
+
 message HeaderMapImplFuzzTestCase {
   repeated Action actions = 1;
+  // Optional threshold value configuration for the lazy header-map.
+  Config config = 2;
 }
diff --git a/test/common/http/header_map_impl_fuzz_test.cc b/test/common/http/header_map_impl_fuzz_test.cc
@@ -7,6 +7,7 @@
 #include "test/common/http/header_map_impl_fuzz.pb.h"
 #include "test/fuzz/fuzz_runner.h"
 #include "test/fuzz/utility.h"
+#include "test/test_common/test_runtime.h"
 
 #include "absl/strings/ascii.h"
 
@@ -16,6 +17,14 @@ namespace Envoy {
 
 // Fuzz the header map implementation.
 DEFINE_PROTO_FUZZER(const test::common::http::HeaderMapImplFuzzTestCase& input) {
+  TestScopedRuntime runtime;
+  // Set the lazy header-map threshold if found.
+  if (input.has_config()) {
+    Runtime::LoaderSingleton::getExisting()->mergeValues(
+        {{"envoy.http.headermap.lazy_map_min_size",
+          absl::StrCat(input.config().lazy_map_min_size())}});
+  }
+
   auto header_map = Http::RequestHeaderMapImpl::create();
   std::vector<std::unique_ptr<Http::LowerCaseString>> lower_case_strings;
   std::vector<std::unique_ptr<std::string>> strings;