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#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#endif
#include "uscxml/plugins/ioprocessor/basichttp/libevent/EventIOProcessor.h"
#include "uscxml/Message.h"
#include <iostream>
#include <event2/dns.h>
#include <event2/buffer.h>
#include <event2/keyvalq_struct.h>
#include <string.h>
#include <io/uri.hpp>
#include <glog/logging.h>
#ifndef _WIN32
#include <netdb.h>
#include <arpa/inet.h>
#endif
#ifdef BUILD_AS_PLUGINS
#include <Pluma/Connector.hpp>
#endif
namespace uscxml {
#ifdef BUILD_AS_PLUGINS
PLUMA_CONNECTOR
bool connect(pluma::Host& host) {
host.add( new EventIOProcessorProvider() );
return true;
}
#endif
// see http://www.w3.org/TR/scxml/#BasicHTTPEventProcessor
EventIOProcessor::EventIOProcessor() {
}
EventIOProcessor::~EventIOProcessor() {
HTTPServer* httpServer = HTTPServer::getInstance();
httpServer->unregisterServlet(this);
}
boost::shared_ptr<IOProcessorImpl> EventIOProcessor::create(Interpreter* interpreter) {
boost::shared_ptr<EventIOProcessor> io = boost::shared_ptr<EventIOProcessor>(new EventIOProcessor());
io->_interpreter = interpreter;
// register at http server
std::string path = interpreter->getName();
path += "/basichttp";
if (!HTTPServer::registerServlet(path, io.get())) {
LOG(ERROR) << "Cannot register basichttp ioprocessor at " << path << ": " << " already taken";
}
return io;
}
Data EventIOProcessor::getDataModelVariables() {
Data data;
assert(_url.length() > 0);
data.compound["location"] = Data(_url, Data::VERBATIM);
return data;
}
void EventIOProcessor::httpRecvRequest(const HTTPServer::Request& req) {
Event reqEvent = req;
reqEvent.type = Event::EXTERNAL;
bool scxmlStructFound = false;
if (reqEvent.data.compound["header"].compound.find("_scxmleventstruct") != reqEvent.data.compound["header"].compound.end()) {
// TODO: this looses all other information
reqEvent = Event::fromXML(evhttp_decode_uri(reqEvent.data.compound["header"].compound["_scxmleventstruct"].atom.c_str()));
scxmlStructFound = true;
}
if (reqEvent.data.compound["header"].compound.find("_scxmleventname") != reqEvent.data.compound["header"].compound.end()) {
reqEvent.name = evhttp_decode_uri(reqEvent.data.compound["header"].compound["_scxmleventname"].atom.c_str());
}
std::map<std::string, Data>::iterator headerIter = reqEvent.data.compound["header"].compound.begin();
while(headerIter != reqEvent.data.compound["header"].compound.end()) {
reqEvent.data.compound[headerIter->first] = Data(evhttp_decode_uri(headerIter->second.atom.c_str()), Data::VERBATIM);
headerIter++;
}
#if 0
std::map<std::string, std::string>::const_iterator headerIter = req.headers.begin();
while(headerIter != req.headers.end()) {
if (boost::iequals("_scxmleventstruct", headerIter->first)) {
reqEvent = Event::fromXML(evhttp_decode_uri(headerIter->second.c_str()));
scxmlStructFound = true;
break;
} else if (boost::iequals("_scxmleventname", headerIter->first)) {
reqEvent.name = evhttp_decode_uri(headerIter->second.c_str());
} else {
reqEvent.data.compound[headerIter->first] = Data(evhttp_decode_uri(headerIter->second.c_str()), Data::VERBATIM);
}
headerIter++;
}
#endif
if (reqEvent.name.length() == 0)
reqEvent.name = req.type;
if (!scxmlStructFound) {
// get content into event
reqEvent.data.compound["content"] = Data(req.content, Data::VERBATIM);
}
returnEvent(reqEvent);
evhttp_send_reply(req.curlReq, 200, "OK", NULL);
}
void EventIOProcessor::send(const SendRequest& req) {
std::string target = req.target;
URL targetURL(target);
// event name
if (req.name.size() > 0) {
targetURL.addOutHeader("_scxmleventname", evhttp_encode_uri(req.name.c_str()));
}
// event namelist
if (req.namelist.size() > 0) {
std::map<std::string, std::string>::const_iterator namelistIter = req.namelist.begin();
while (namelistIter != req.namelist.end()) {
targetURL.addOutHeader(namelistIter->first, namelistIter->second);
namelistIter++;
}
}
// event params
if (req.params.size() > 0) {
std::multimap<std::string, std::string>::const_iterator paramIter = req.params.begin();
while (paramIter != req.params.end()) {
targetURL.addOutHeader(paramIter->first, paramIter->second);
paramIter++;
}
}
// content
if (req.content.size() > 0)
targetURL.setOutContent(req.content);
targetURL.setRequestType("post");
targetURL.addMonitor(this);
_sendRequests[req.sendid] = std::make_pair(targetURL, req);
URLFetcher::fetchURL(targetURL);
}
void EventIOProcessor::downloadStarted(const URL& url) {}
void EventIOProcessor::downloadCompleted(const URL& url) {
std::map<std::string, std::pair<URL, SendRequest> >::iterator reqIter = _sendRequests.begin();
while(reqIter != _sendRequests.end()) {
if (reqIter->second.first == url) {
_sendRequests.erase(reqIter);
return;
}
reqIter++;
}
assert(false);
}
void EventIOProcessor::downloadFailed(const URL& url, int errorCode) {
std::map<std::string, std::pair<URL, SendRequest> >::iterator reqIter = _sendRequests.begin();
while(reqIter != _sendRequests.end()) {
if (reqIter->second.first == url) {
Event failEvent;
failEvent.name = "error.communication";
returnEvent(failEvent);
_sendRequests.erase(reqIter);
return;
}
reqIter++;
}
assert(false);
}
}
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