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#include "Hub.h"
#include "HTTPSocket.h"
#include <openssl/sha.h>
namespace uWS {
char *Hub::inflate(char *data, size_t &length, size_t maxPayload) {
dynamicInflationBuffer.clear();
inflationStream.next_in = (Bytef *) data;
inflationStream.avail_in = length;
int err;
do {
inflationStream.next_out = (Bytef *) inflationBuffer;
inflationStream.avail_out = LARGE_BUFFER_SIZE;
err = ::inflate(&inflationStream, Z_FINISH);
if (!inflationStream.avail_in) {
break;
}
dynamicInflationBuffer.append(inflationBuffer, LARGE_BUFFER_SIZE - inflationStream.avail_out);
} while (err == Z_BUF_ERROR && dynamicInflationBuffer.length() <= maxPayload);
inflateReset(&inflationStream);
if ((err != Z_BUF_ERROR && err != Z_OK) || dynamicInflationBuffer.length() > maxPayload) {
length = 0;
return nullptr;
}
if (dynamicInflationBuffer.length()) {
dynamicInflationBuffer.append(inflationBuffer, LARGE_BUFFER_SIZE - inflationStream.avail_out);
length = dynamicInflationBuffer.length();
return (char *) dynamicInflationBuffer.data();
}
length = LARGE_BUFFER_SIZE - inflationStream.avail_out;
return inflationBuffer;
}
void Hub::onServerAccept(uS::Socket *s) {
HttpSocket<SERVER> *httpSocket = new HttpSocket<SERVER>(s);
delete s;
httpSocket->setState<HttpSocket<SERVER>>();
httpSocket->start(httpSocket->nodeData->loop, httpSocket, httpSocket->setPoll(UV_READABLE));
httpSocket->setNoDelay(true);
Group<SERVER>::from(httpSocket)->addHttpSocket(httpSocket);
Group<SERVER>::from(httpSocket)->httpConnectionHandler(httpSocket);
}
void Hub::onClientConnection(uS::Socket *s, bool error) {
HttpSocket<CLIENT> *httpSocket = (HttpSocket<CLIENT> *) s;
if (error) {
httpSocket->onEnd(httpSocket);
} else {
httpSocket->setState<HttpSocket<CLIENT>>();
httpSocket->change(httpSocket->nodeData->loop, httpSocket, httpSocket->setPoll(UV_READABLE));
httpSocket->setNoDelay(true);
httpSocket->upgrade(nullptr, nullptr, 0, nullptr, 0, nullptr);
}
}
bool Hub::listen(const char *host, int port, uS::TLS::Context sslContext, int options, Group<SERVER> *eh) {
if (!eh) {
eh = (Group<SERVER> *) this;
}
if (uS::Node::listen<onServerAccept>(host, port, sslContext, options, (uS::NodeData *) eh, nullptr)) {
eh->errorHandler(port);
return false;
}
return true;
}
bool Hub::listen(int port, uS::TLS::Context sslContext, int options, Group<SERVER> *eh) {
return listen(nullptr, port, sslContext, options, eh);
}
uS::Socket *allocateHttpSocket(uS::Socket *s) {
return (uS::Socket *) new HttpSocket<CLIENT>(s);
}
void Hub::connect(std::string uri, void *user, std::map<std::string, std::string> extraHeaders, int timeoutMs, Group<CLIENT> *eh) {
if (!eh) {
eh = (Group<CLIENT> *) this;
}
size_t offset = 0;
std::string protocol = uri.substr(offset, uri.find("://")), hostname, portStr, path;
if ((offset += protocol.length() + 3) < uri.length()) {
hostname = uri.substr(offset, uri.find_first_of(":/", offset) - offset);
offset += hostname.length();
if (uri[offset] == ':') {
offset++;
portStr = uri.substr(offset, uri.find("/", offset) - offset);
}
offset += portStr.length();
if (uri[offset] == '/') {
path = uri.substr(++offset);
}
}
if (hostname.length()) {
int port = 80;
bool secure = false;
if (protocol == "wss") {
port = 443;
secure = true;
} else if (protocol != "ws") {
eh->errorHandler(user);
}
if (portStr.length()) {
port = stoi(portStr);
}
HttpSocket<CLIENT> *httpSocket = (HttpSocket<CLIENT> *) uS::Node::connect<allocateHttpSocket, onClientConnection>(hostname.c_str(), port, secure, eh);
if (httpSocket) {
// startTimeout occupies the user
httpSocket->startTimeout<HttpSocket<CLIENT>::onEnd>(timeoutMs);
httpSocket->httpUser = user;
std::string randomKey = "x3JJHMbDL1EzLkh9GBhXDw==";
// for (int i = 0; i < 22; i++) {
// randomKey[i] = rand() %
// }
httpSocket->httpBuffer = "GET /" + path + " HTTP/1.1\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Key: " + randomKey + "\r\n"
"Host: " + hostname + "\r\n" +
"Sec-WebSocket-Version: 13\r\n";
for (std::pair<std::string, std::string> header : extraHeaders) {
httpSocket->httpBuffer += header.first + ": " + header.second + "\r\n";
}
httpSocket->httpBuffer += "\r\n";
} else {
eh->errorHandler(user);
}
} else {
eh->errorHandler(user);
}
}
void Hub::upgrade(uv_os_sock_t fd, const char *secKey, SSL *ssl, const char *extensions, size_t extensionsLength, const char *subprotocol, size_t subprotocolLength, Group<SERVER> *serverGroup) {
if (!serverGroup) {
serverGroup = &getDefaultGroup<SERVER>();
}
uS::Socket s((uS::NodeData *) serverGroup, serverGroup->loop, fd, ssl);
s.setNoDelay(true);
// todo: skip httpSocket -> it cannot fail anyways!
HttpSocket<SERVER> *httpSocket = new HttpSocket<SERVER>(&s);
httpSocket->setState<HttpSocket<SERVER>>();
httpSocket->change(httpSocket->nodeData->loop, httpSocket, httpSocket->setPoll(UV_READABLE));
bool perMessageDeflate;
httpSocket->upgrade(secKey, extensions, extensionsLength, subprotocol, subprotocolLength, &perMessageDeflate);
WebSocket<SERVER> *webSocket = new WebSocket<SERVER>(perMessageDeflate, httpSocket);
delete httpSocket;
webSocket->setState<WebSocket<SERVER>>();
webSocket->change(webSocket->nodeData->loop, webSocket, webSocket->setPoll(UV_READABLE));
serverGroup->addWebSocket(webSocket);
serverGroup->connectionHandler(webSocket, {});
}
}
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