Add extracted tools: CitrineOS, OpenOCPP, ShapeShifter

- CitrineOS core extracted (CSMS OCPP 2.0.1)
- OpenOCPP extracted (firmware OCPP 1.6J/2.0.1)
- ShapeShifter library installed (pip install -e)
- ShapeShifter specification extracted
- EVerest extracted

TODO updated with progress

tools/EVerest-main/lib/everest/slac/src/packet_socket.hpp

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2022 - 2022 Pionix GmbH and Contributors to EVerest
+#ifndef SRC_PACKET_SOCKET_HPP
+#define SRC_PACKET_SOCKET_HPP
+
+#include <cstdint>
+#include <string>
+
+#include <linux/if_ether.h>
+
+namespace utils {
+class InterfaceInfo {
+public:
+    explicit InterfaceInfo(const std::string& interface_name);
+    bool is_valid() {
+        return valid;
+    };
+    const std::string& get_error() const {
+        return error;
+    };
+
+    const int get_index() const {
+        return interface_index;
+    };
+    const uint8_t* get_mac() const {
+        return mac;
+    };
+
+private:
+    bool valid{false};
+    int interface_index{0};
+    std::string error;
+    uint8_t mac[ETH_ALEN];
+};
+
+class PacketSocket {
+public:
+    enum class IOResult {
+        Ok,
+        Failure,
+        Timeout
+    };
+
+    PacketSocket(const InterfaceInfo& if_info, int protocol);
+
+    bool is_valid() {
+        return valid;
+    };
+
+    const std::string& get_error() {
+        return error;
+    }
+
+    IOResult read(uint8_t* buffer, int timeout);
+
+    int get_last_read_size() const {
+        return bytes_read;
+    };
+
+    IOResult write(const void* buf, size_t count, int timeout);
+
+    static const int MIN_BUFFER_SIZE = ETH_FRAME_LEN;
+
+private:
+    int bytes_read{-1};
+    bool valid{false};
+    std::string error;
+    int socket_fd{-1};
+};
+} // namespace utils
+
+#endif // SRC_PACKET_SOCKET_HPP