Let's make (git) history!

gateway/cgi.cpp

@@ -0,0 +1,109 @@
+/* Copyright (c) 2018 Albert S.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "cgi.h"
+#include "../utils.h"
+#include <cstdlib>
+#include <string>
+#include <memory>
+#include <iostream>
+Cgi::Cgi(const Config &c)
+{
+	this->config = &c;
+}
+
+bool Cgi::keepReading()
+{
+	return !this->responseSent;
+}
+
+Request Cgi::readRequest()
+{
+
+	std::string request_uri = utils::getenv("REQUEST_URI");
+	if(request_uri == "")
+	{
+		throw std::runtime_error("REQUEST_URI is empty");
+	}
+
+	Request result{request_uri};
+
+	std::string method = utils::getenv("REQUEST_METHOD");
+	if(method == "POST")
+	{
+		std::string content_type = utils::getenv("CONTENT_TYPE");
+		if(content_type != "application/x-www-form-urlencoded")
+		{
+			throw "invalid content_type";
+		}
+		std::string content_length = utils::getenv("CONTENT_LENGTH");
+		int cl = std::stoi(content_length);
+		std::unique_ptr<char[]> ptr(new char[cl + 1]);
+		std::cin.get(ptr.get(), cl + 1);
+
+		std::string post_data{ptr.get()};
+	}
+
+	result.initCookies(utils::getenv("HTTP_COOKIE"));
+	result.setIp(utils::getenv("REMOTE_ADDR"));
+	result.setUseragent(utils::getenv("HTTP_USER_AGENT"));
+
+	return result;
+}
+
+void Cgi::work(RequestWorker &worker)
+{
+	while(this->keepReading())
+	{
+		Request req = readRequest();
+		sendResponse(worker.processRequest(req));
+	}
+}
+
+void Cgi::sendResponse(const Response &r)
+{
+	std::cout << "Status: " << r.getStatus() << "\r\n";
+	std::cout << "Content-Type: " << r.getContentType() << "\r\n";
+	for(auto header : r.getResponseHeaders())
+	{
+		std::string key = header.first;
+		std::string second = header.second;
+		if(key.back() != ':')
+		{
+			std::cout << key << ":" << second << "\r\n";
+		}
+		else
+		{
+			std::cout << key << second << "\r\n";
+		}
+	}
+	for(const Cookie &c : r.getCookies())
+	{
+		std::cout << "Set-Cookie: " << c.createHeaderValue() << "\r\n";
+	}
+	std::cout << "\r\n";
+	std::cout << r.getBody();
+	std::cout.flush();
+	this->responseSent = true;
+}
+
+Cgi::~Cgi()
+{
+}

gateway/cgi.h

@@ -0,0 +1,22 @@
+#ifndef CGI_H
+#define CGI_H
+
+#include "gatewayinterface.h"
+#include "../requestworker.h"
+class Cgi : public GatewayInterface
+{
+  private:
+	bool responseSent = false;
+	const Config *config;
+	Request readRequest();
+	void sendResponse(const Response &r);
+
+  public:
+	Cgi(const Config &c);
+	bool keepReading() override;
+	void work(RequestWorker &worker) override;
+
+	~Cgi();
+};
+
+#endif // CGI_H

gateway/gatewayfactory.cpp

@@ -0,0 +1,28 @@
+/* Copyright (c) 2018 Albert S.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "gatewayfactory.h"
+#include "cgi.h"
+#include "httpgateway.h"
+
+std::unique_ptr<GatewayInterface> createGateway(const Config &c)
+{
+	return std::make_unique<HttpGateway>(c);
+}

gateway/gatewayfactory.h

@@ -0,0 +1,8 @@
+#ifndef GATEWAYFACTORY_H
+#define GATEWAYFACTORY_H
+#include <memory>
+#include "../config.h"
+#include "gatewayinterface.h"
+std::unique_ptr<GatewayInterface> createGateway(const Config &c);
+
+#endif // GATEWAYFACTORY_H

gateway/gatewayinterface.cpp

@@ -0,0 +1,25 @@
+/* Copyright (c) 2018 Albert S.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "gatewayinterface.h"
+
+GatewayInterface::GatewayInterface()
+{
+}

gateway/gatewayinterface.h

@@ -0,0 +1,18 @@
+#ifndef GATEWAYINTERFACE_H
+#define GATEWAYINTERFACE_H
+#include "../request.h"
+#include "../response.h"
+#include "../config.h"
+#include "../requestworker.h"
+class GatewayInterface
+{
+  public:
+	GatewayInterface();
+	virtual bool keepReading() = 0;
+	virtual void work(RequestWorker &worker) = 0;
+	virtual ~GatewayInterface()
+	{
+	}
+};
+
+#endif // GATEWAYINTERFACE_H

gateway/httpgateway.cpp

@@ -0,0 +1,93 @@
+/* Copyright (c) 2018 Albert S.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "httpgateway.h"
+#include "../logger.h"
+HttpGateway::HttpGateway(const Config &config)
+{
+}
+
+bool HttpGateway::keepReading()
+{
+	return true;
+}
+
+Request HttpGateway::convertRequest(httplib::Request request)
+{
+	Request result;
+	result.setRequestMethod(request.method);
+	result.setUrl(request.target);
+
+	// TODO: this eats resources, where perhaps it does not need to. move it to request?
+	for(auto &it : request.params)
+	{
+		it.second = utils::html_xss(std::string{it.second});
+	}
+	if(request.method == "GET")
+	{
+		result.setGetVars(request.params);
+	}
+	else
+	{
+		result.initGetMap(request.target);
+		result.setPostVars(request.params);
+	}
+
+	if(request.has_header("COOKIE"))
+	{
+		result.initCookies(request.get_header_value("COOKIE"));
+	}
+	result.setIp(request.get_header_value("REMOTE_ADDR"));
+
+	return result;
+}
+
+httplib::Response HttpGateway::convertResponse(Response response)
+{
+	httplib::Response result;
+	result.set_content(response.getBody(), response.getContentType().c_str());
+	result.status = response.getStatus();
+	for(auto &header : response.getResponseHeaders())
+	{
+		result.set_header(header.first.c_str(), header.second.c_str());
+	}
+
+	for(const Cookie &cookie : response.getCookies())
+	{
+		result.set_header("Set-Cookie", cookie.createHeaderValue().c_str());
+	}
+	return result;
+}
+
+void HttpGateway::work(RequestWorker &worker)
+{
+	httplib::Server server;
+
+	auto handler = [&](const httplib::Request &req, httplib::Response &res) {
+		Request wikiRequest = convertRequest(req);
+		Logger::debug() << "httpgateway: received request " << wikiRequest;
+		Response wikiresponse = worker.processRequest(wikiRequest);
+
+		res = convertResponse(wikiresponse);
+	};
+	server.Get("/(.*)", handler);
+	server.Post("/(.*)", handler);
+	server.listen("localhost", 1234);
+}

gateway/httpgateway.h

@@ -0,0 +1,22 @@
+#ifndef HTTPGATEWAY_H
+#define HTTPGATEWAY_H
+#include "httplib.h"
+#include "gatewayinterface.h"
+#include "../requestworker.h"
+#include "../request.h"
+#include "../response.h"
+#include "../utils.h"
+class HttpGateway : public GatewayInterface
+{
+  private:
+	Response convertResponse(httplib::Response response);
+	httplib::Response convertResponse(Response response);
+	Request convertRequest(httplib::Request request);
+	//  void worker(const httplib::Request& req, httplib::Response& res);
+  public:
+	HttpGateway(const Config &config);
+	bool keepReading() override;
+	void work(RequestWorker &worker) override;
+};
+
+#endif // HTTPGATEWAY_H