1 files changed, 64 insertions, 0 deletions
diff --git a/tests/src/test/java/com/example/ExperimentalMutatorDynamicProtoFuzzer.java b/tests/src/test/java/com/example/ExperimentalMutatorDynamicProtoFuzzer.java
new file mode 100644
index 00000000..bbca1ddc
--- /dev/null
+++ b/tests/src/test/java/com/example/ExperimentalMutatorDynamicProtoFuzzer.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2023 Code Intelligence GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example;
+
+import com.code_intelligence.jazzer.api.FuzzerSecurityIssueMedium;
+import com.code_intelligence.jazzer.mutation.annotation.NotNull;
+import com.code_intelligence.jazzer.mutation.annotation.proto.WithDefaultInstance;
+import com.google.protobuf.DescriptorProtos.DescriptorProto;
+import com.google.protobuf.DescriptorProtos.FieldDescriptorProto;
+import com.google.protobuf.DescriptorProtos.FieldDescriptorProto.Type;
+import com.google.protobuf.DescriptorProtos.FileDescriptorProto;
+import com.google.protobuf.Descriptors.Descriptor;
+import com.google.protobuf.Descriptors.DescriptorValidationException;
+import com.google.protobuf.Descriptors.FieldDescriptor;
+import com.google.protobuf.Descriptors.FileDescriptor;
+import com.google.protobuf.DynamicMessage;
+import com.google.protobuf.Message;
+
+public class ExperimentalMutatorDynamicProtoFuzzer {
+  public static void fuzzerTestOneInput(@NotNull @WithDefaultInstance(
+      "com.example.ExperimentalMutatorDynamicProtoFuzzer#getDefaultInstance") Message proto) {
+    FieldDescriptor I32 = proto.getDescriptorForType().findFieldByName("i32");
+    FieldDescriptor STR = proto.getDescriptorForType().findFieldByName("str");
+    if (proto.getField(I32).equals(1234) && proto.getField(STR).equals("abcd")) {
+      throw new FuzzerSecurityIssueMedium("Secret proto is found!");
+    }
+  }
+
+  @SuppressWarnings("unused")
+  private static DynamicMessage getDefaultInstance() {
+    DescriptorProto myMessage =
+        DescriptorProto.newBuilder()
+            .setName("my_message")
+            .addField(FieldDescriptorProto.newBuilder().setNumber(1).setName("i32").setType(
+                Type.TYPE_INT32))
+            .addField(FieldDescriptorProto.newBuilder().setNumber(2).setName("str").setType(
+                Type.TYPE_STRING))
+            .build();
+    FileDescriptorProto file = FileDescriptorProto.newBuilder()
+                                   .setName("my_protos.proto")
+                                   .addMessageType(myMessage)
+                                   .build();
+    try {
+      return DynamicMessage.getDefaultInstance(FileDescriptor.buildFrom(file, new FileDescriptor[0])
+                                                   .findMessageTypeByName("my_message"));
+    } catch (DescriptorValidationException e) {
+      throw new IllegalStateException(e);
+    }
+  }
+}