/*
* - Sends a message to tell receiver a file is coming.
* - Then sends a stream of bytes until the entire file
* has been sent.
* - Sends in binary mode which works for either text or binary.
*/
bool MsgClient::sendFile(const std::string& filename, Socket& socket)
{
// assumes that socket is connected
std::string fqname = "../TestFiles/" + filename;
FileSystem::FileInfo fi(fqname);
size_t fileSize = fi.size();
std::string sizeString = Converter<size_t>::toString(fileSize);
FileSystem::File file(fqname);
file.open(FileSystem::File::in, FileSystem::File::binary);
if (!file.isGood())
return false;
HttpMessage msg = makeMessage(1, "", "localhost::8080");
msg.addAttribute(HttpMessage::Attribute("file", filename));
msg.addAttribute(HttpMessage::Attribute("content-length", sizeString));
sendMessage(msg, socket);
const size_t BlockSize = 2048;
Socket::byte buffer[BlockSize];
while (true)
{
FileSystem::Block blk = file.getBlock(BlockSize);
if (blk.size() == 0)
break;
for (size_t i = 0; i < blk.size(); ++i)
buffer[i] = blk[i];
socket.send(blk.size(), buffer);
if (!file.isGood())
break;
}
file.close();
return true;
}
// -------------- << Sends File via socket >> -----------------
bool Sender::sendFile(const std::string & filename, Socket & socket, int fPort, int tport)
{
std::string fqname = filename;
FileSystem::FileInfo fi(fqname);
size_t fileSize = fi.size();
std::string sizeString = Converter<size_t>::toString(fileSize);
std::string toPort = Converter<int>::toString(tport);
std::string fromPort = Converter<int>::toString(fPort);
FileSystem::File file(fqname);
file.open(FileSystem::File::in, FileSystem::File::binary);
if (!file.isGood())
return false;
HttpMessage msg = makeMessage(1, "", "localhost::"+toPort);
msg.addAttribute(HttpMessage::Attribute("file", filename));
msg.addAttribute(HttpMessage::Attribute("content-length", sizeString));
msg.addAttribute(HttpMessage::Attribute("To-Port", toPort));
msg.addAttribute(HttpMessage::Attribute("From-Port", fromPort));
sendMessage(msg, socket);
const size_t BlockSize = 2048;
Socket::byte buffer[BlockSize];
while (true)
{
FileSystem::Block blk = file.getBlock(BlockSize);
if (blk.size() == 0)
break;
for (size_t i = 0; i < blk.size(); ++i)
buffer[i] = blk[i];
socket.send(blk.size(), buffer);
if (!file.isGood())
break;
}
file.close();
return true;
}
// -----------------< 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;
}
// ----------------< 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;
}
// -------------- << Process file extraction request of client via socket >> -----------------
void Sender::getFiles(std::string filename, Socket & socket, bool ExtractWithDepsFlag, int cPort, int sPort)
{
std::string clientPort = Converter<int>::toString(cPort);
std::string serverPort = Converter<int>::toString(sPort);
HttpMessage msg = makeMessage(2, "", "localhost::8080");
msg.addAttribute(HttpMessage::Attribute("file", filename));
msg.addAttribute(HttpMessage::Attribute("To-Port", serverPort));
msg.addAttribute(HttpMessage::Attribute("From-Port", clientPort));
std::string depFlag;
if (ExtractWithDepsFlag) depFlag = "Yes";
else
depFlag = "No";
msg.addAttribute(HttpMessage::Attribute("ExtractWithDepsFlag", depFlag));
sendMessage(msg, socket);
}
//receriveFile
void MsgClient::receiveFile(Socket& socket) {
HttpMessage msg;
while (true)
{
std::string attribString = socket.recvString('\n');
if (attribString.size() > 1)
{
HttpMessage::Attribute attrib = HttpMessage::parseAttribute(attribString);
msg.addAttribute(attrib);
}
else
{
break;
}
}
std::string filename = msg.findValue("file");
if (filename != "")
{
size_t contentSize;
std::string sizeString = msg.findValue("content-length");
if (sizeString != "")
contentSize = Converter<size_t>::toValue(sizeString);
downloadFile(filename, contentSize, socket);
Show::write("Client download file "+filename + "\n");
}
}
// ---------------< 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;
}
//-----< send Dependency using socket
void MsgClient::sendDependency(Socket& socket) {
std::string dependency;
dependency = "A.cpp:B.cpp Ctest.h:C.cpp";
HttpMessage msg = makeMessage(1, dependency, "localhost::8080");
msg.addAttribute(HttpMessage::Attribute("dependency", "dependency"));
sendMessage(msg, socket);
Show::write("\n\n sending dependency " +dependency);
}
//----< 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;
}
//----< receiver functionality is defined by this function >---------
void ClientHandler::operator()(Socket socket) {
std::function<void()> threadProc = [&]() {
while (true) {
HttpMessage msg = readMessage(socket); // read a message from socket
if (msg.attributes().size() == 0 || msg.bodyString() == "quit") break;
if (msg.findValue("type") == "returnList") {
sendMessage(msg);
continue;
}
else if (msg.findValue("type") == "returnFiles") {
Sender sndr(msg.findValue("fromAddr"));
sndr.start();
std::vector<std::string> files = splitString(msg.bodyString());
for (std::string file : files) {
std::string fileSpec = searchFile(file);
FileSystem::FileInfo fi(fileSpec);
FileSystem::File fileIn(fileSpec);
fileIn.open(FileSystem::File::in, FileSystem::File::binary);
if (!fileIn.isGood()) {
std::cout << "\n could not open file " << file;
continue;
}
size_t fileSize = fi.size();
std::string sizeString = Converter<size_t>::toString(fileSize);
HttpMessage message = sndr.makeMessage(4, "", msg.findValue("toAddr"));
message.addAttribute(HttpMessage::Attribute("file", fileSpec));
message.addAttribute(HttpMessage::Attribute("content-length", sizeString));
sndr.postMessage(message);
}
sndr.postMessage(sndr.makeMessage(0, "closeServer", msg.findValue("toAddr")));
sndr.postMessage(sndr.makeMessage(0, "quit", msg.findValue("toAddr")));
sndr.wait();
continue;
}
else if (msg.attributes()[0].second == "error") {
sendMessage(msg);
continue;
}
msgQ_.enQ(msg);
}
};
std::thread receiveThread(threadProc);
receiveThread.join();
}
/*
* 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;
}
// -----------------< 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;
}
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;
}
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";
}
