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/modules/EVSE/EvseV2G/connection/tls_connection.hpp

@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2023 Pionix GmbH and Contributors to EVerest
+
+#ifndef TLS_CONNECTION_HPP_
+#define TLS_CONNECTION_HPP_
+
+#include <cstddef>
+#include <everest/tls/tls.hpp>
+#include <unistd.h>
+
+struct v2g_context;
+struct v2g_connection;
+
+namespace tls {
+
+/*!
+ * \param ctx v2g connection context
+ * \return returns 0 on succss and -1 on error
+ */
+int connection_init(struct v2g_context* ctx);
+
+/*!
+ * \param ctx v2g connection context
+ * \return returns 0 on succss and -1 on error
+ */
+int connection_start_server(struct v2g_context* ctx);
+
+/*!
+ * \brief connection_read This abstracts a read from the connection socket, so that higher level functions
+ * are not required to distinguish between TCP and TLS connections.
+ * \param conn v2g connection context
+ * \param buf buffer to store received message sequence.
+ * \param count number of read bytes.
+ * \return Returns the number of read bytes if successful, otherwise returns -1 for reading errors and
+ * -2 for closed connection */
+ssize_t connection_read(struct v2g_connection* conn, unsigned char* buf, std::size_t count);
+
+/*!
+ * \brief connection_write This abstracts a write to the connection socket, so that higher level functions
+ * are not required to distinguish between TCP and TLS connections.
+ * \param conn v2g connection context
+ * \param buf buffer to store received message sequence.
+ * \param count size of the buffer
+ * \return Returns the number of read bytes if successful, otherwise returns -1 for reading errors and
+ * -2 for closed connection */
+ssize_t connection_write(struct v2g_connection* conn, unsigned char* buf, std::size_t count);
+
+/*!
+ * \brief build_config This builds the TLS server configuration based on the v2g context.
+ * \param config TLS server configuration to be filled
+ * \param ctx v2g connection context
+ * \return Returns true if the configuration was built successfully, otherwise false.
+ */
+bool build_config(tls::Server::config_t& config, struct v2g_context* ctx);
+
+} // namespace tls
+
+#endif // TLS_CONNECTION_HPP_