Exemple #1
0
/*
 * This function only creates one type of message for this demo.
 * - To do that the first argument is 1, e.g., index for the type of message to create.
 * - The body may be an empty string.
 * - EndPoints are strings of the form ip:port, e.g., localhost:8081. This argument
 *   expects the receiver EndPoint for the toAddr attribute.
 */
HttpMessage MsgClient::makeMessage(size_t n, const std::string& body, const EndPoint& ep)
{
  HttpMessage msg;
  HttpMessage::Attribute attrib;
  EndPoint myEndPoint = "localhost:8081";  // ToDo: make this a member of the sender
                                           // given to its constructor.
  switch (n)
  {
  case 1:
    msg.clear();
    msg.addAttribute(HttpMessage::attribute("POST", "Message"));
    msg.addAttribute(HttpMessage::Attribute("mode", "oneway"));
    msg.addAttribute(HttpMessage::parseAttribute("toAddr:" + ep));
    msg.addAttribute(HttpMessage::parseAttribute("fromAddr:" + myEndPoint));

    msg.addBody(body);
    if (body.size() > 0)
    {
      attrib = HttpMessage::attribute("content-length", Converter<size_t>::toString(body.size()));
      msg.addAttribute(attrib);
    }
    break;
  default:
    msg.clear();
    msg.addAttribute(HttpMessage::attribute("Error", "unknown message type"));
  }
  return msg;
}
// -----------------< prepare error message >--------------------
HttpMessage ClientHandler::errorMessage(HttpMessage msg, std::string body) {
	HttpMessage message;
	message.addAttribute(HttpMessage::attribute("type", "error"));
	message.addAttribute(HttpMessage::attribute("fromAddr", msg.findValue("toAddr")));
	message.addAttribute(HttpMessage::attribute("toAddr", msg.findValue("fromAddr")));
	message.addBody(body);
	return message;
}
// ---------------< construct a general message to be sent as acknowledgement >---------
HttpMessage ClientHandler::constructMessage(HttpMessage msg) {
		msg.removeAttribute("content-length");
		std::string bodyString = "<file>" + msg.findValue("file") + "</file>";
		std::string sizeString = Converter<size_t>::toString(bodyString.size());
		msg.addAttribute(HttpMessage::Attribute("content-length", sizeString));
		msg.addBody(bodyString);
		return msg;
}
// ----------------< get the list of files in a specified package >-------------
HttpMessage ClientHandler::getFileNameList(HttpMessage msg) {
	std::vector<std::string> fileList = FileSystem::Directory::getFiles("../TestFileServer/" + msg.findValue("dir"));
	std::string body = "";
	for (size_t i = 0; i < fileList.size(); ++i)
		if (fileList[i] != "." && fileList[i] != "..")
			body += "\n  " + fileList[i];
	body += "\n";
	HttpMessage message;
	message.addAttribute(HttpMessage::attribute("fromAddr", msg.findValue("toAddr")));
	message.addAttribute(HttpMessage::attribute("toAddr", msg.findValue("fromAddr")));
	message.addAttribute(HttpMessage::attribute("type", "returnList"));
	message.addBody(body);
	return message;
}
// ---------------< read the contents of the message body, if it is a normal message >----------
HttpMessage ClientHandler::readBody(HttpMessage msg, Socket& socket) {
	size_t numBytes = 0;
	size_t pos = msg.findAttribute("content-length");
	HttpMessage message = msg;
	if (pos < msg.attributes().size()) {
		numBytes = Converter<size_t>::toValue(msg.attributes()[pos].second);
		Socket::byte* buffer = new Socket::byte[numBytes + 1];
		socket.recv(numBytes, buffer);
		buffer[numBytes] = '\0';
		std::string msgBody(buffer);
		message.addBody(msgBody);
		delete[] buffer;
	}
		return message;
}
Exemple #6
0
HttpMessage	MsgClient::readMessage(Socket& socket) {
	Show::write("Client readMessage \n");
	//connectionClosed_ = false;
	HttpMessage msg;
	//read attribute
	while (true)
	{
		std::string attribString = socket.recvString('\n');
		if (attribString.size() > 1)
		{
			HttpMessage::Attribute attrib = HttpMessage::parseAttribute(attribString);
			msg.addAttribute(attrib);
		}
		else
		{
			break;
		}
	}

	if (msg.attributes().size() == 0)
	{
		return msg;
	}

	if (msg.attributes()[0].first == "POST")
	{
		
		std::string filePath = msg.findValue("filePath");
		if (filePath != "")
		{
			Show::write("Test for get FolderList");
			size_t numBytes = 0;
			size_t pos = msg.findAttribute("content-length");
			if (pos < msg.attributes().size())
			{
				numBytes = Converter<size_t>::toValue(msg.attributes()[pos].second);
				Socket::byte* buffer = new Socket::byte[numBytes + 1];
				socket.recv(numBytes, buffer);
				buffer[numBytes] = '\0';
				std::string msgBody(buffer);
				msg.addBody(msgBody);
				Show::write("getFolderList:" + msgBody + "\n");
			}

		}
	}
	return msg;
}
//----< this defines processing to frame messages >------------------
HttpMessage ClientHandler::readMessage(Socket& socket) {
	connectionClosed_ = false;
	HttpMessage msg;
	while (true) { // read message attributes
		std::string attribString = socket.recvString('\n');
		if (attribString.size() > 1) {
			HttpMessage::Attribute attrib = HttpMessage::parseAttribute(attribString);
			msg.addAttribute(attrib);
		}
		else break;
	}
	if (msg.attributes().size() == 0) { // If client is done, connection breaks
		connectionClosed_ = true;					// and recvString returns empty string
		return msg;
	}
	if (msg.attributes()[0].first == "POST") // read body if POST
	{
		if (msg.attributes()[0].second == "Message") msg = readBody(msg, socket); // case 0 - normal message
		else if (msg.attributes()[0].second == "File") { // case 1 - client sending file to server
			saveFileServer(msg, socket);
			msg = constructMessage(msg);
		}
		else if (msg.attributes()[0].second == "closePackage") msg = closePackage(msg); // case 7 - close a package
		else if (msg.attributes()[0].second == "returnFile") { // case 4 - server sends files to client
			saveFileClient(msg, socket);
			msg = constructMessage(msg);
		}
	}
	else if (msg.attributes()[0].first == "GET") { // read message if GET
		msg = readBody(msg, socket);
		if (msg.attributes()[0].second == "getFileList")  msg = getFileList(msg); // case 5 - request list of packages
		else if (msg.attributes()[0].second == "getFileNameList")  msg = getFileNameList(msg); // case 6 - request list of files in a packages
		else if (msg.attributes()[0].second == "File" || msg.attributes()[0].second == "FileWithDeps")
			msg = getFiles(msg, msg.attributes()[0].second);
	}
	else {
		msg.removeAttribute("content-length");
		std::string bodyString = "<msg>Error message</msg>";
		std::string sizeString = Converter<size_t>::toString(bodyString.size());
		msg.addAttribute(HttpMessage::Attribute("content-length", sizeString));
		msg.addBody(bodyString);
	}
	return msg;
}
// -----------------< get the requested files, with or without dependencies >------------
HttpMessage ClientHandler::getFiles(HttpMessage msg, std::string type) {
	HttpMessage message;
	if (!FileSystem::Directory::exists("../TestFileServer/" + msg.bodyString()))
		return errorMessage(msg, "\n  no package " + msg.bodyString());
	std::string path = "../TestFileServer/" + msg.bodyString() + "/";
	std::vector<std::string> files = FileSystem::Directory::getFiles(path, "*.ver*");
	if (files.size() == 0) return errorMessage(msg, "\n  so files in package " + msg.bodyString());
	std::vector<std::string> sendFiles;
	for (int i = files.size() - 1; i >= 0; --i) { // figure out the latest version of the files
		std::string ext = files[i].substr(files[i].find_last_of(".") + 1);
		if (ext == "xml") continue;
		std::string name = files[i].substr(0, files[i].find_last_of("."));
		if (find(sendFiles, name) == sendFiles.size())
			sendFiles.push_back(files[i]); // add only unique file names to be sent
	}
	std::vector<std::shared_ptr<AbstractXmlElement>> deps;
	if (type == "FileWithDeps") { // figure out dependencies of files to be sent
		for (int i = 0; i < sendFiles.size(); ++i) {
			std::string file = sendFiles[i];
			if (!FileSystem::File::exists("../TestFileServer/" + msg.bodyString() + "/" + file)) continue;
			std::string xmlname = "../TestFileServer/" + msg.bodyString() + "/" + file + ".xml";
			XmlDocument doc(xmlname, XmlDocument::file);
			deps = doc.element("deps").descendents().select();
			for (auto dep : deps)
				if (dep->tag() == "") { // prevent circular dependencies to be stuck in a loop
					std::string depName = dep->value().substr(0, dep->value().find("\n"));
					if (find(sendFiles, depName.substr(0, depName.find_last_of("."))) == sendFiles.size()) sendFiles.push_back(depName);
				}
		}
	}
	std::string body;
	for (size_t i = 0; i < sendFiles.size() - 1; ++i) body += sendFiles[i] + ",";
	body += sendFiles[sendFiles.size() - 1];
	message.addAttribute(HttpMessage::attribute("fromAddr", msg.findValue("toAddr")));
	message.addAttribute(HttpMessage::attribute("toAddr", msg.findValue("fromAddr")));
	message.addAttribute(HttpMessage::attribute("type", "returnFiles"));
	message.addBody(body);
	return message;
}
// ----------------< close a package to prevent addditional updating >-------------
HttpMessage ClientHandler::closePackage(HttpMessage msg) {
	HttpMessage message;
	if (!FileSystem::Directory::exists("../TestFileServer/" + msg.findValue("dir"))) {
		message.addAttribute(HttpMessage::attribute("type", "error"));
		message.addAttribute(HttpMessage::attribute("fromAddr", msg.findValue("toAddr")));
		message.addAttribute(HttpMessage::attribute("toAddr", msg.findValue("fromAddr")));
		std::string str = "\n  no package with the name " + msg.findValue("dir");
		message.addBody(str);
		return message;
	}
	std::string name = "../TestFileServer/" + msg.findValue("dir") + "/" + msg.findValue("dir") + "." + getCurrentDate() + ".xml";
	XmlDocument doc(name, XmlDocument::file);
	sPtr close = makeTaggedElement("close");
	close->addChild(makeTextElement("true"));
	doc.xmlRoot()->addChild(close);
	FileSystem::File::remove(name);
	FileSystem::File xml(name);
	xml.open(FileSystem::File::out, FileSystem::File::text);
	if (xml.isGood()) xml.putLine(doc.toString());
	xml.close();
	return message;
}
int main()
{
  Utils::Title("Testing HttpMessage class", '=');

  HttpMessage msg;
  msg.addAttribute(HttpMessage::attribute("Command", "GetFiles"));
  msg.addAttribute(HttpMessage::attribute("ToAddr", "127.0.0.1:8080"));
  msg.addAttribute(HttpMessage::attribute("FromAddr", "127.0.0.1:8081"));
  msg.addAttribute(HttpMessage::attribute("Mode", "OneWay"));
  msg.addAttribute(HttpMessage::attribute("content_length", "10"));

  msg.addBody(std::vector<HttpMessage::byte> { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' });

  std::cout << "\n" << Utils::addHeaderAndFooterLines(msg.toString());
  
  Utils::title("testing headerString(), bodyString(), and toString()");
  std::cout << "\nheader string:";
  std::cout << "\n" << msg.headerString();
  std::cout << "\nbody string:";
  std::cout << "\n" << msg.bodyString();
  std::cout << "\n\nmessage string:";
  std::cout << "\n" << StringHelper::addHeaderAndFooterLines(msg.toString());

  Utils::title("Testing removeAttribute");
  putline();
  msg.removeAttribute("content_length");
  std::cout << msg.toString();
  putline();

  Utils::title("Testing addBody(const std::string&)");
  std::string msgBody = "<msg>this is a message</msg>";
  msg.addAttribute(HttpMessage::Attribute("content_length", Converter<size_t>::toString(msgBody.size())));
  msg.addBody(msgBody);
  std::cout << "\n" << StringHelper::addHeaderAndFooterLines(msg.toString());

  Utils::title("Testing parseAttribute(const std::string&)");
  std::string test2 = "name:value";
  std::cout << "\n  input = \"" << test2 << "\"";
  Attribute attrib2 = HttpMessage::parseAttribute(test2);
  std::cout << "\n  result is: " << HttpMessage::attribString(attrib2);

  test2 = " name : value ";
  std::cout << "\n  input = \"" << test2 << "\"";
  attrib2 = HttpMessage::parseAttribute(test2);
  std::cout << "\n  result is: " << HttpMessage::attribString(attrib2);

  Utils::title("Testing Message parsing");
  MockSocket sock(msg);
  HttpMessage msg2;
  while (true)
  {
    std::string line = sock.recvString();
    if (line.size() == 0)
      break;
    Attribute attrib = HttpMessage::parseAttribute(line);
    msg2.addAttribute(attrib);
  }
  Value val = msg2.findValue("content_length");
  if (val.size() > 0)
  {
    size_t numBytes = Converter<size_t>::toValue(val);
    byte* pBuffer = new byte[numBytes];
    sock.recv(numBytes, pBuffer);
    msg2.addBody(numBytes, pBuffer);
  }
  std::cout << "\n" << Utils::addHeaderAndFooterLines(msg2.toString());
  std::cout << "\n\n";
}