d398a6ced2
- 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
75 lines
3.1 KiB
C++
75 lines
3.1 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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// Copyright Pionix GmbH and Contributors to EVerest
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#ifndef EVEREST_CORE_MODULE_HTTPCLIENT_H
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#define EVEREST_CORE_MODULE_HTTPCLIENT_H
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#include "fmt/format.h"
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#include "http_client_interface.hpp"
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#include <curl/curl.h>
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#include <everest/logging.hpp>
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#include <regex>
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#include <stdexcept>
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#include <string>
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namespace module::main {
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// The DCBM does not print its certificate correctly in its /certificate API.
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// In particular, the newlines after -----BEGIN CERTIFICATE----- and before -----END CERTIFICATE----- are missing there.
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// This function will add these newlines if they are missing.
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static void fixup_tls_certificate(std::string& tls_certificate) {
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tls_certificate = std::regex_replace(tls_certificate, std::regex("-----BEGIN CERTIFICATE-----\\s*([^\n])"),
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"-----BEGIN CERTIFICATE-----\n$1");
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tls_certificate = std::regex_replace(tls_certificate, std::regex("([^\n])\\s*-----END CERTIFICATE-----"),
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"$1\n-----END CERTIFICATE-----");
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}
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class HttpClient : public HttpClientInterface {
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public:
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HttpClient() = delete;
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HttpClient(const std::string& host_arg, int port_arg, const std::string& tls_certificate,
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const std::string& network_interface = "") {
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// initialize libcurl - this is safe to do multiple times, if there are multiple HttpClients
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// Note: This is only thread-safe after libcurl 7.84.0, but we use 8.4.0, so it should be fine
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curl_global_init(CURL_GLOBAL_DEFAULT);
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// These are saved in the client to avoid making the controller pass them at every call
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host = host_arg;
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port = port_arg;
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dcbm_tls_certificate = tls_certificate;
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tls_enabled = !dcbm_tls_certificate.empty();
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fixup_tls_certificate(dcbm_tls_certificate);
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this->network_interface = network_interface;
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}
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~HttpClient() override {
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// release the libcurl resources - this must be done once for every call to curl_global_init().
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// Note: This is only thread-safe after libcurl 7.84.0, but we use 8.4.0, so it should be fine
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curl_global_cleanup();
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}
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void set_command_timeout(const int command_timeout_ms) override {
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this->command_timeout_ms = command_timeout_ms;
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}
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[[nodiscard]] HttpResponse get(const std::string& path) const override;
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[[nodiscard]] HttpResponse put(const std::string& path, const std::string& body) const override;
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[[nodiscard]] HttpResponse post(const std::string& path, const std::string& body) const override;
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private:
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std::string host;
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int port;
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bool tls_enabled;
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std::string dcbm_tls_certificate;
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int command_timeout_ms = 5000; // default timeout in milliseconds
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std::string network_interface; // network interface
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[[nodiscard]] CURL* create_curl_handle_and_setup_url(const std::string& path) const;
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HttpResponse perform_request(CURL* connection, const std::string& request_body, const char* method_name,
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const std::string& path) const;
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};
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} // namespace module::main
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#endif // EVEREST_CORE_MODULE_HTTPCLIENT_H
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