/**
* @param socket Socket to communicate over
* @param type Command ID
* @param source Source ID
* @param len Data length
* @param content Payload
* @return 0 on success
*/
int SendMessage(SWInetSocket *socket, int type, int source, unsigned int streamid, unsigned int len,
const char *content) {
assert(socket != nullptr);
SWBaseSocket::SWBaseError error;
RoRnet::Header head;
const int msgsize = sizeof(RoRnet::Header) + len;
if (msgsize >= RORNET_MAX_MESSAGE_LENGTH) {
Logger::Log(LOG_ERROR, "UID: %d - attempt to send too long message", source);
return -4;
}
char buffer[RORNET_MAX_MESSAGE_LENGTH];
memset(&head, 0, sizeof(RoRnet::Header));
head.command = type;
head.source = source;
head.size = len;
head.streamid = streamid;
// construct buffer
memset(buffer, 0, RORNET_MAX_MESSAGE_LENGTH);
memcpy(buffer, (char *) &head, sizeof(RoRnet::Header));
memcpy(buffer + sizeof(RoRnet::Header), content, len);
if (socket->fsend(buffer, msgsize, &error) < msgsize)
{
Logger::Log(LOG_ERROR, "send error -1: %s", error.get_error().c_str());
return -1;
}
StatsAddOutgoing(msgsize);
return 0;
}
/**
* @param socket socket to communicate over
* @param type a type... dunno
* @param source who is sending the message
* @param len length of the content being sent
* @param content message to send
* @return dunno
*/
int Messaging::sendmessage(SWInetSocket *socket, int type, int source, unsigned int streamid, unsigned int len, const char* content)
{
STACKLOG;
if( NULL == socket )
{
Logger::log( LOG_ERROR, "UID: %d - attempt to send a messaage over a"
"null socket.", source );
return -3;
}
//SWInetSocket* socket = Sequencer::getSocket(source)
SWBaseSocket::SWBaseError error;
header_t head;
const int msgsize = sizeof(header_t) + len;
if(msgsize >= MAX_MESSAGE_LENGTH)
{
Logger::log( LOG_ERROR, "UID: %d - attempt to send too long message", source);
return -4;
}
char buffer[MAX_MESSAGE_LENGTH];
int rlen = 0;
memset(&head, 0, sizeof(header_t));
head.command = type;
head.source = source;
head.size = len;
head.streamid = streamid;
// construct buffer
memset(buffer, 0, MAX_MESSAGE_LENGTH);
memcpy(buffer, (char *)&head, sizeof(header_t));
memcpy(buffer + sizeof(header_t), content, len);
#if 0
// comment out since this severly bloats the server log
char body[len*2+1];
memset( body, 0,len*2+1);
bodyblockashex(body, content, len);
Logger::log( LOG_DEBUG, "sending message: \t%d\t%d\t%d", type, source, len);
Logger::log( LOG_DEBUG, "%s", body);
#endif
while (rlen < msgsize)
{
int sendnum = socket->send( buffer + rlen, msgsize - rlen, &error );
if (sendnum < 0 || error != SWBaseSocket::ok)
{
Logger::log(LOG_ERROR, "send error -1: %s", error.get_error().c_str());
return -1;
}
rlen += sendnum;
}
//Logger::log(LOG_DEBUG, "message of size %d sent to uid %d.", rlen, source);
traffic.bandwidthOutgoing += msgsize;
return 0;
}
int Notifier::HTTPPOST(const char* URL, const char* data)
{
STACKLOG;
int res=0;
SWBaseSocket::SWBaseError error;
SWInetSocket mySocket;
if (mySocket.connect(80, REPO_SERVER, &error))
{
char query[2048];
int len = (int)strnlen(data, 16000);
sprintf(query, "POST %s HTTP/1.0\r\n" \
"Host: %s\r\n" \
"Content-Type: application/octet-stream\r\n" \
"Content-Length: %d\r\n"
"\r\n" \
"%s", \
URL, REPO_SERVER, len, data);
Logger::log(LOG_DEBUG,"Query to Master server: %s", query);
if (mySocket.sendmsg(query, &error)<0)
{
Logger::log(LOG_ERROR,"Notifier: could not send request (%s)", error.get_error().c_str());
res=-1;
}
int rlen=mySocket.recv(httpresp, 65536, &error);
if (rlen>0 && rlen<65535) httpresp[rlen]=0;
else
{
Logger::log(LOG_ERROR,"Notifier: could not get a valid response (%s)",
error.get_error().c_str());
res=-1;
}
Logger::log(LOG_DEBUG,"Response from Master server:'%s'", httpresp);
try
{
resp = HttpMsg(httpresp);
}
catch( std::runtime_error e)
{
Logger::log(LOG_ERROR, e.what() );
res = -1;
}
// disconnect
mySocket.disconnect();
}
else
{
Logger::log(LOG_ERROR,"Notifier: could not connect to the Master server (%s)", error.get_error().c_str());
res=-1;
}
return res;
}
int UserAuth::HTTPGET(const char* URL, HttpMsg &resp)
{
STACKLOG;
if(trustlevel<=1)
{
// If this happens, then you did something wrong in the server code
Logger::log(LOG_ERROR, "userauth: tried to contact master server without permission. URL: %s", URL);
return 0;
}
char httpresp[65536]; //!< http response from the master server
int res=0;
SWBaseSocket::SWBaseError error;
SWInetSocket mySocket;
if (mySocket.connect(80, REPO_SERVER, &error))
{
char query[2048];
sprintf(query, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", URL, REPO_SERVER);
Logger::log(LOG_DEBUG,"Query to Master server: %s", query);
if (mySocket.sendmsg(query, &error)<0)
{
Logger::log(LOG_ERROR,"Notifier: could not send request (%s)", error.get_error().c_str());
res=-1;
}
int rlen=mySocket.recv(httpresp, 65536, &error);
if (rlen>0 && rlen<65535) httpresp[rlen]=0;
else
{
Logger::log(LOG_ERROR,"Notifier: could not get a valid response (%s)", error.get_error().c_str());
res=-1;
}
Logger::log(LOG_DEBUG,"Response from Master server:'%s'", httpresp);
try
{
resp = HttpMsg(httpresp);
}
catch( std::runtime_error e)
{
Logger::log(LOG_ERROR, e.what() );
res = -1;
}
// disconnect
mySocket.disconnect();
}
else
{
Logger::log(LOG_ERROR,"Notifier: could not connect to the Master server (%s)", error.get_error().c_str());
res=-1;
}
return res;
}
int Notifier::HTTPGET(const char* URL)
{
STACKLOG;
int res=0;
SWBaseSocket::SWBaseError error;
SWInetSocket mySocket;
if (mySocket.connect(80, REPO_SERVER, &error))
{
char query[2048];
sprintf(query, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", URL, REPO_SERVER);
Logger::log(LOG_DEBUG,"Query to Master server: %s", query);
if (mySocket.sendmsg(query, &error)<0)
{
Logger::log(LOG_ERROR,"Notifier: could not send request (%s)", error.get_error().c_str());
res=-1;
}
int rlen=mySocket.recv(httpresp, 65536, &error);
if (rlen>0 && rlen<65535) httpresp[rlen]=0;
else
{
Logger::log(LOG_ERROR,"Notifier: could not get a valid response (%s)", error.get_error().c_str());
res=-1;
}
Logger::log(LOG_DEBUG,"Response from Master server:'%s'", httpresp);
try
{
resp = HttpMsg(httpresp);
}
catch( std::runtime_error e)
{
Logger::log(LOG_ERROR, e.what() );
res = -1;
}
// disconnect
mySocket.disconnect();
}
else
{
Logger::log(LOG_ERROR,"Notifier: could not connect to the Master server (%s)", error.get_error().c_str());
res=-1;
}
return res;
}
void Listener::threadstart() {
Logger::Log(LOG_DEBUG, "Listerer thread starting");
//here we start
SWBaseSocket::SWBaseError error;
//manage the listening socket
m_listen_socket.bind(m_listen_port, &error);
if (error != SWBaseSocket::ok) {
//this is an error!
Logger::Log(LOG_ERROR, "FATAL Listerer: %s", error.get_error().c_str());
//there is nothing we can do here
return;
// exit(1);
}
m_listen_socket.listen();
Logger::Log(LOG_VERBOSE, "Listener ready");
m_ready_cond.Signal(1);
//await connections
while (!m_thread_shutdown) {
Logger::Log(LOG_VERBOSE, "Listener awaiting connections");
SWInetSocket *ts = (SWInetSocket *) m_listen_socket.accept(&error);
if (error != SWBaseSocket::ok) {
if (m_thread_shutdown) {
Logger::Log(LOG_ERROR, "INFO Listener shutting down");
} else {
Logger::Log(LOG_ERROR, "ERROR Listener: %s", error.get_error().c_str());
}
}
Logger::Log(LOG_VERBOSE, "Listener got a new connection");
ts->set_timeout(5, 0);
//receive a magic
int type;
int source;
unsigned int len;
unsigned int streamid;
char buffer[RORNET_MAX_MESSAGE_LENGTH];
try {
// this is the start of it all, it all starts with a simple hello
if (Messaging::ReceiveMessage(ts, &type, &source, &streamid, &len, buffer, RORNET_MAX_MESSAGE_LENGTH))
throw std::runtime_error("ERROR Listener: receiving first message");
// make sure our first message is a hello message
if (type != RoRnet::MSG2_HELLO) {
Messaging::SendMessage(ts, RoRnet::MSG2_WRONG_VER, 0, 0, 0, 0);
throw std::runtime_error("ERROR Listener: protocol error");
}
// check client version
if (source == 5000 && (std::string(buffer) == "MasterServer")) {
Logger::Log(LOG_VERBOSE, "Master Server knocked ...");
// send back some information, then close socket
char tmp[2048] = "";
sprintf(tmp, "protocol:%s\nrev:%s\nbuild_on:%s_%s\n", RORNET_VERSION, VERSION, __DATE__, __TIME__);
if (Messaging::SendMessage(ts, RoRnet::MSG2_MASTERINFO, 0, 0, (unsigned int) strlen(tmp), tmp)) {
throw std::runtime_error("ERROR Listener: sending master info");
}
// close socket
ts->disconnect(&error);
delete ts;
continue;
}
// compare the versions if they are compatible
if (strncmp(buffer, RORNET_VERSION, strlen(RORNET_VERSION))) {
// not compatible
Messaging::SendMessage(ts, RoRnet::MSG2_WRONG_VER, 0, 0, 0, 0);
throw std::runtime_error("ERROR Listener: bad version: " + std::string(buffer) + ". rejecting ...");
}
// compatible version, continue to send server settings
std::string motd_str;
{
std::vector<std::string> lines;
if (!Utils::ReadLinesFromFile(Config::getMOTDFile(), lines))
{
for (const auto& line : lines)
motd_str += line + "\n";
}
}
Logger::Log(LOG_DEBUG, "Listener sending server settings");
RoRnet::ServerInfo settings;
memset(&settings, 0, sizeof(RoRnet::ServerInfo));
settings.has_password = !Config::getPublicPassword().empty();
strncpy(settings.info, motd_str.c_str(), motd_str.size());
strncpy(settings.protocolversion, RORNET_VERSION, strlen(RORNET_VERSION));
strncpy(settings.servername, Config::getServerName().c_str(), Config::getServerName().size());
strncpy(settings.terrain, Config::getTerrainName().c_str(), Config::getTerrainName().size());
if (Messaging::SendMessage(ts, RoRnet::MSG2_HELLO, 0, 0, (unsigned int) sizeof(RoRnet::ServerInfo),
(char *) &settings))
throw std::runtime_error("ERROR Listener: sending version");
//receive user infos
if (Messaging::ReceiveMessage(ts, &type, &source, &streamid, &len, buffer, RORNET_MAX_MESSAGE_LENGTH)) {
std::stringstream error_msg;
error_msg << "ERROR Listener: receiving user infos\n"
<< "ERROR Listener: got that: "
<< type;
throw std::runtime_error(error_msg.str());
}
if (type != RoRnet::MSG2_USER_INFO)
throw std::runtime_error("Warning Listener: no user name");
if (len > sizeof(RoRnet::UserInfo))
throw std::runtime_error("Error: did not receive proper user credentials");
Logger::Log(LOG_INFO, "Listener creating a new client...");
RoRnet::UserInfo *user = (RoRnet::UserInfo *) buffer;
user->authstatus = RoRnet::AUTH_NONE;
// authenticate
user->username[RORNET_MAX_USERNAME_LEN - 1] = 0;
std::string nickname = Str::SanitizeUtf8(user->username);
user->authstatus = m_sequencer->AuthorizeNick(std::string(user->usertoken, 40), nickname);
strncpy(user->username, nickname.c_str(), RORNET_MAX_USERNAME_LEN - 1);
if (Config::isPublic()) {
Logger::Log(LOG_DEBUG, "password login: %s == %s?",
Config::getPublicPassword().c_str(),
std::string(user->serverpassword, 40).c_str());
if (strncmp(Config::getPublicPassword().c_str(), user->serverpassword, 40)) {
Messaging::SendMessage(ts, RoRnet::MSG2_WRONG_PW, 0, 0, 0, 0);
throw std::runtime_error("ERROR Listener: wrong password");
}
Logger::Log(LOG_DEBUG, "user used the correct password, "
"creating client!");
} else {
Logger::Log(LOG_DEBUG, "no password protection, creating client");
}
//create a new client
m_sequencer->createClient(ts, *user); // copy the user info, since the buffer will be cleared soon
Logger::Log(LOG_DEBUG, "listener returned!");
}
catch (std::runtime_error &e) {
Logger::Log(LOG_ERROR, e.what());
ts->disconnect(&error);
delete ts;
}
}
}
/**
* @param out_type Message type, see MSG2_* macros in rornet.h
* @param out_source Magic. Value 5000 used by serverlist to check this server.
* @return 0 on success, negative number on error.
*/
int Messaging::receivemessage(
SWInetSocket *socket,
int* out_type,
int* out_source,
unsigned int* out_stream_id,
unsigned int* out_payload_len,
char* out_payload,
unsigned int payload_buf_len)
{
STACKLOG;
assert(socket != nullptr);
assert(out_type != nullptr);
assert(out_source != nullptr);
assert(out_stream_id != nullptr);
assert(out_payload != nullptr);
char buffer[MAX_MESSAGE_LENGTH] = {};
int hlen=0;
SWBaseSocket::SWBaseError error;
while (hlen<(int)sizeof(header_t))
{
int recvnum=socket->recv(buffer+hlen, sizeof(header_t)-hlen, &error);
if (recvnum < 0 || error!=SWBaseSocket::ok)
{
Logger::log(LOG_ERROR, "receive error -2: %s", error.get_error().c_str());
// this also happens when the connection is canceled
return -2;
}
hlen+=recvnum;
}
header_t head;
memcpy(&head, buffer, sizeof(header_t));
*out_type = head.command;
*out_source = head.source;
*out_payload_len = head.size;
*out_stream_id = head.streamid;
if((int)head.size >= MAX_MESSAGE_LENGTH)
{
Logger::log(LOG_ERROR, "receivemessage(): payload too long: %d b (max. is %d b)", head.size, MAX_MESSAGE_LENGTH);
return -3;
}
if( head.size > 0)
{
//read the rest
while (hlen < (int)sizeof(header_t) + (int)head.size)
{
int recvnum = socket->recv(buffer + hlen,
(head.size+sizeof(header_t)) - hlen, &error);
if (recvnum<0 || error!=SWBaseSocket::ok)
{
Logger::log(LOG_ERROR, "receive error -1: %s",
error.get_error().c_str());
return -1;
}
hlen += recvnum;
}
}
traffic.bandwidthIncoming += (int)sizeof(header_t)+(int)head.size;
memcpy(out_payload, buffer+sizeof(header_t), payload_buf_len);
return 0;
}
