/* API Request. * * Author: Steffen Vogel * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include #include #include #include #include #include #include #include #define RE_UUID \ "[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{" \ "12}" namespace villas { namespace node { namespace api { // Forward declarations class Session; class Response; class RequestFactory; class Request { friend Session; friend RequestFactory; friend Response; protected: Session *session; Logger logger; Buffer buffer; public: std::vector matches; Session::Method method; unsigned long contentLength; json_t *body; RequestFactory *factory; Request(Session *s) : session(s), method(Session::Method::UNKNOWN), contentLength(0), body(nullptr), factory(nullptr) {} virtual ~Request() { if (body) json_decref(body); } virtual void prepare() {} virtual Response *execute() = 0; virtual void decode(); const std::string &getMatch(int idx) const { return matches[idx]; } std::string getQueryArg(const std::string &arg) { char buf[1024]; const char *val; val = lws_get_urlarg_by_name(session->wsi, (arg + "=").c_str(), buf, sizeof(buf)); return val ? std::string(val) : std::string(); } std::string getHeader(enum lws_token_indexes hdr) { char buf[1024]; lws_hdr_copy(session->wsi, buf, sizeof(buf), hdr); return std::string(buf); } virtual std::string toString(); }; class RequestFactory : public plugin::Plugin { public: using plugin::Plugin::Plugin; virtual bool match(const std::string &uri, std::smatch &m) const = 0; virtual Request *make(Session *s) = 0; static Request *create(Session *s, const std::string &uri, Session::Method meth, unsigned long ct); virtual void init(Request *r) { r->logger = getLogger(); } virtual std::string getType() const { return "api:request"; } virtual bool isHidden() const { return false; } }; template class RequestPlugin : public RequestFactory { protected: std::regex regex; public: RequestPlugin() : RequestFactory(), regex(re) {} virtual Request *make(Session *s) { auto *r = new T(s); init(r); return r; } // Get plugin name virtual std::string getName() const { return name; } // Get plugin description virtual std::string getDescription() const { return desc; } virtual bool match(const std::string &uri, std::smatch &match) const { return std::regex_match(uri, match, regex); } }; } // namespace api } // namespace node } // namespace villas