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/**
* @file
* @author 2012-2013 Stefan Radomski (stefan.radomski@cs.tu-darmstadt.de)
* @copyright Simplified BSD
*
* @cond
* This program is free software: you can redistribute it and/or modify
* it under the terms of the FreeBSD license as published by the FreeBSD
* project.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the FreeBSD license along with this
* program. If not, see <http://www.opensource.org/licenses/bsd-license>.
* @endcond
*/
#ifndef HTTPSERVER_H_AIH108EG
#define HTTPSERVER_H_AIH108EG
#include <stddef.h> // for NULL
#include <map> // for map, map<>::iterator, etc
#include <string> // for string, operator<
extern "C" {
#include "event2/util.h" // for evutil_socket_t
#include <event2/http.h> // for evhttp_request
#include <evws.h>
}
#include "uscxml/Common.h" // for USCXML_API
#include "uscxml/Message.h" // for Data, Event
#include "uscxml/concurrency/tinythread.h" // for recursive_mutex, etc
#include "uscxml/config.h" // for OPENSSL_FOUND
namespace uscxml {
class HTTPServlet;
class WebSocketServlet;
class USCXML_API HTTPServer {
public:
class Request : public Event {
public:
Request() : evhttpReq(NULL) {}
std::string content;
struct evhttp_request* evhttpReq;
operator bool() {
return evhttpReq != NULL;
}
};
class WSFrame : public Event {
public:
WSFrame() : evwsConn(NULL) {}
std::string content;
struct evws_connection* evwsConn;
};
class SSLConfig {
public:
SSLConfig() : port(8443) {}
std::string privateKey;
std::string publicKey;
unsigned short port;
};
class Reply {
public:
Reply() : status(200), type("get"), evhttpReq(NULL) {}
Reply(Request req) : status(200), type(req.data.compound["type"].atom), evhttpReq(req.evhttpReq) {}
void setRequest(Request req) {
type = req.data.compound["type"].atom;
evhttpReq = req.evhttpReq;
}
int status;
std::string type;
std::map<std::string, std::string> headers;
std::string content;
struct evhttp_request* evhttpReq;
};
struct CallbackData {
HTTPServlet* servlet;
evhttp_request* httpReq;
};
enum ServerType {
HTTPS,
HTTP,
WebSockets
};
static HTTPServer* getInstance(unsigned short port, unsigned short wsPort, SSLConfig* sslConf = NULL);
static HTTPServer* getInstance() {
return getInstance(0, 0, NULL);
}
static std::string getBaseURL(ServerType type = HTTP);
static void reply(const Reply& reply);
static void wsSend(struct evws_connection *conn, enum evws_opcode opcode, const char *data, uint64_t length);
static void wsBroadcast(const char *uri, enum evws_opcode opcode, const char *data, uint64_t length);
static bool registerServlet(const std::string& path, HTTPServlet* servlet); ///< Register a servlet, returns false if path is already taken
static void unregisterServlet(HTTPServlet* servlet);
static bool registerServlet(const std::string& path, WebSocketServlet* servlet); ///< Register a servlet, returns false if path is already taken
static void unregisterServlet(WebSocketServlet* servlet);
private:
class WSData {
public:
WSData(struct evws_connection *conn_, const char *uri_, enum evws_opcode opcode_, const char *data_, uint64_t length_) {
conn = conn_;
if (uri_)
uri = uri_;
opcode = opcode_;
data = std::string(data_, length_);
}
struct evws_connection *conn;
std::string data;
std::string uri;
evws_opcode opcode;
};
struct comp_strsize_less {
bool operator()(std::string const& l, std::string const& r) const {
if (l.size() < r.size())
return false;
return true;
// return l < r;
};
};
HTTPServer(unsigned short port, unsigned short wsPort, SSLConfig* sslConf = NULL);
virtual ~HTTPServer();
void start();
void stop();
static void run(void* instance);
void determineAddress();
static void replyCallback(evutil_socket_t fd, short what, void *arg);
static void wsSendCallback(evutil_socket_t fd, short what, void *arg);
static void httpRecvReqCallback(struct evhttp_request *req, void *callbackData);
static void wsRecvReqCallback(struct evws_connection *conn, struct evws_frame *, void *callbackData);
void processByMatchingServlet(const Request& request);
void processByMatchingServlet(evws_connection* conn, const WSFrame& frame);
static std::map<std::string, std::string> mimeTypes;
std::map<std::string, HTTPServlet*> _httpServlets;
typedef std::map<std::string, HTTPServlet*>::iterator http_servlet_iter_t;
std::map<std::string, WebSocketServlet*> _wsServlets;
typedef std::map<std::string, WebSocketServlet*>::iterator ws_servlet_iter_t;
struct event_base* _base;
struct evhttp* _http;
struct evws* _evws;
struct evhttp_bound_socket* _httpHandle;
evutil_socket_t _wsHandle;
unsigned short _port;
unsigned short _wsPort;
std::string _address;
static HTTPServer* _instance;
static tthread::recursive_mutex _instanceMutex;
tthread::thread* _thread;
tthread::recursive_mutex _mutex;
bool _isRunning;
friend class HTTPServlet;
friend class WebSocketServlet;
#if (defined EVENT_SSL_FOUND && defined OPENSSL_FOUND && defined OPENSSL_HAS_ELIPTIC_CURVES)
struct evhttp* _https;
struct evhttp_bound_socket* _sslHandle;
unsigned short _sslPort;
static struct bufferevent* sslBufferEventCallback(struct event_base *base, void *arg);
static void sslGeneralBufferEventCallback (struct evhttp_request *req, void *arg);
#endif
};
class USCXML_API HTTPServlet {
public:
virtual ~HTTPServlet() {}
virtual bool httpRecvRequest(const HTTPServer::Request& request) = 0;
virtual void setURL(const std::string& url) = 0; /// Called by the server with the actual URL
virtual bool canAdaptPath() {
return true;
}
};
class USCXML_API WebSocketServlet {
public:
virtual ~WebSocketServlet() {}
virtual bool wsRecvRequest(struct evws_connection *conn, const HTTPServer::WSFrame& frame) = 0;
virtual void setURL(const std::string& url) = 0; /// Called by the server with the actual URL
virtual bool canAdaptPath() {
return true;
}
};
}
#endif /* end of include guard: HTTPSERVER_H_AIH108EG */
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