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#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#endif
#include "uscxml/plugins/ioprocessor/basichttp/BasicHTTPIOProcessor.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 BasicHTTPIOProcessorProvider() );
return true;
}
#endif
// see http://www.w3.org/TR/scxml/#BasicHTTPEventProcessor
BasicHTTPIOProcessor::BasicHTTPIOProcessor() {
}
BasicHTTPIOProcessor::~BasicHTTPIOProcessor() {
HTTPServer* httpServer = HTTPServer::getInstance();
httpServer->unregisterServlet(this);
}
boost::shared_ptr<IOProcessorImpl> BasicHTTPIOProcessor::create(InterpreterImpl* interpreter) {
boost::shared_ptr<BasicHTTPIOProcessor> io = boost::shared_ptr<BasicHTTPIOProcessor>(new BasicHTTPIOProcessor());
io->_interpreter = interpreter;
// register at http server
std::string path = interpreter->getName();
int i = 2;
while (!HTTPServer::registerServlet(path + "/basichttp", io.get())) {
std::stringstream ss;
ss << interpreter->getName() << i++;
path = ss.str();
}
return io;
}
Data BasicHTTPIOProcessor::getDataModelVariables() {
Data data;
assert(_url.length() > 0);
data.compound["location"] = Data(_url, Data::VERBATIM);
return data;
}
bool BasicHTTPIOProcessor::httpRecvRequest(const HTTPServer::Request& req) {
Event reqEvent = req;
reqEvent.eventType = Event::EXTERNAL;
// this will call the const subscript operator
if (req.data["content"]["_scxmleventname"]) {
reqEvent.name = req.data["content"]["_scxmleventname"].atom;
}
/// test532
if (reqEvent.name.length() == 0)
reqEvent.name = "http." + req.data.compound.at("type").atom;
returnEvent(reqEvent);
evhttp_send_reply(req.curlReq, 200, "OK", NULL);
return true;
}
void BasicHTTPIOProcessor::send(const SendRequest& req) {
if (req.target.length() == 0) {
_interpreter->receiveInternal(Event("error.communication", Event::PLATFORM));
return;
}
bool isLocal = false;
std::string target;
if (!boost::equals(req.target, _url)) {
target = req.target;
} else {
isLocal = true;
target = _url;
}
URL targetURL(target);
std::stringstream kvps;
std::string kvpSeperator;
// event name
if (req.name.size() > 0) {
char* eventNameCStr = evhttp_encode_uri("_scxmleventname");
char* eventValueCStr = evhttp_encode_uri(req.name.c_str());
kvps << kvpSeperator << eventNameCStr << "=" << eventValueCStr;
kvpSeperator = "&";
free(eventNameCStr);
free(eventValueCStr);
// targetURL.addOutHeader("_scxmleventname", evhttp_encode_uri(req.name.c_str()));
}
// event namelist
if (req.namelist.size() > 0) {
std::map<std::string, Data>::const_iterator namelistIter = req.namelist.begin();
while (namelistIter != req.namelist.end()) {
char* keyCStr = evhttp_encode_uri(namelistIter->first.c_str());
// this is simplified - Data might be more elaborate than a simple string atom
char* valueCStr = evhttp_encode_uri(namelistIter->second.atom.c_str());
kvps << kvpSeperator << keyCStr << "=" << valueCStr;
free(keyCStr);
free(valueCStr);
kvpSeperator = "&";
// targetURL.addOutHeader(namelistIter->first, namelistIter->second);
namelistIter++;
}
}
// event params
if (req.params.size() > 0) {
std::multimap<std::string, Data>::const_iterator paramIter = req.params.begin();
while (paramIter != req.params.end()) {
char* keyCStr = evhttp_encode_uri(paramIter->first.c_str());
// this is simplified - Data might be more elaborate than a simple string atom
char* valueCStr = evhttp_encode_uri(paramIter->second.atom.c_str());
kvps << kvpSeperator << keyCStr << "=" << valueCStr;
free(keyCStr);
free(valueCStr);
kvpSeperator = "&";
// targetURL.addOutHeader(paramIter->first, paramIter->second);
paramIter++;
}
}
// content
if (req.content.size() > 0) {
char* keyCStr = evhttp_encode_uri("content");
char* valueCStr = evhttp_encode_uri(req.content.c_str());
kvps << kvpSeperator << keyCStr << "=" << valueCStr;
free(keyCStr);
free(valueCStr);
kvpSeperator = "&";
}
if (req.dom) {
std::stringstream xmlStream;
xmlStream << req.dom;
char* keyCStr = evhttp_encode_uri("content");
char* valueCStr = evhttp_encode_uri(xmlStream.str().c_str());
kvps << kvpSeperator << keyCStr << "=" << valueCStr;
free(keyCStr);
free(valueCStr);
kvpSeperator = "&";
}
targetURL.setOutContent(kvps.str());
targetURL.setRequestType("post");
targetURL.addMonitor(this);
_sendRequests[req.sendid] = std::make_pair(targetURL, req);
if (isLocal) {
// test201 use a blocking request with local communication
targetURL.download(true);
} else {
URLFetcher::fetchURL(targetURL);
}
}
void BasicHTTPIOProcessor::downloadStarted(const URL& url) {}
void BasicHTTPIOProcessor::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) {
// test 513
std::string statusCode = url.getStatusCode();
if (statusCode.length() > 0) {
std::string statusPrefix = statusCode.substr(0,1);
std::string statusRest = statusCode.substr(1);
Event event;
event.data = url;
event.name = "HTTP." + statusPrefix + "." + statusRest;
returnEvent(event);
}
_sendRequests.erase(reqIter);
return;
}
reqIter++;
}
assert(false);
}
void BasicHTTPIOProcessor::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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