/* * 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; }
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"; }