First release of open-appsec source code

components/attachment-intakers/nginx_attachment/intentional_failure.h

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+// Copyright (C) 2022 Check Point Software Technologies Ltd. All rights reserved.
+
+// Licensed under the Apache License, Version 2.0 (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.
+
+#ifndef __INTENTIONAL_FAILURE__
+#define __INTENTIONAL_FAILURE__
+
+#include <chrono>
+
+class IntentionalFailureHandler
+{
+public:
+    enum class FailureType {
+        None,
+        CreateSocket,
+        AcceptSocket,
+        InitializeConnectionChannel,
+        WriteDataToSocket,
+        ReceiveDataFromSocket,
+        ParsingResponse,
+        GetDataFromAttchment,
+        RegisterAttchment,
+        GetInstanceID,
+        COUNT
+    };
+
+    void init();
+    bool shouldFail(bool was_originaly_successful, FailureType failure, bool *failed_on_purpose);
+    void delayIfNeeded(FailureType failure);
+    
+    void preload();
+
+private:
+    void RegisterIntentionalFailure();
+
+    FailureType failure_type;
+    bool is_failure_enabled;
+    bool is_limited;
+    int fail_count;
+    int allow_count;
+
+    FailureType delay_failure_type;
+    bool is_delay_enabled;
+    std::chrono::microseconds delay_amount;
+};
+
+#endif // __INTENTIONAL_FAILURE__