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AbstractIrcServer.cpp
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AbstractIrcServer.cpp
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#include "AbstractIrcServer.hpp"
#include "common/Channel.hpp"
#include "common/QLogging.hpp"
#include "messages/LimitedQueueSnapshot.hpp"
#include "messages/Message.hpp"
#include "messages/MessageBuilder.hpp"
#include <QCoreApplication>
namespace chatterino {
const int RECONNECT_BASE_INTERVAL = 2000;
// 60 falloff counter means it will try to reconnect at most every 60*2 seconds
const int MAX_FALLOFF_COUNTER = 60;
// Ratelimits for joinBucket_
const int JOIN_RATELIMIT_BUDGET = 18;
const int JOIN_RATELIMIT_COOLDOWN = 12500;
AbstractIrcServer::AbstractIrcServer()
{
// Initialize the connections
// XXX: don't create write connection if there is no separate write connection.
this->writeConnection_.reset(new IrcConnection);
this->writeConnection_->moveToThread(
QCoreApplication::instance()->thread());
// Apply a leaky bucket rate limiting to JOIN messages
auto actuallyJoin = [&](QString message) {
if (!this->channels.contains(message))
{
return;
}
this->readConnection_->sendRaw("JOIN #" + message);
};
this->joinBucket_.reset(new RatelimitBucket(
JOIN_RATELIMIT_BUDGET, JOIN_RATELIMIT_COOLDOWN, actuallyJoin, this));
QObject::connect(this->writeConnection_.get(),
&Communi::IrcConnection::messageReceived, this,
[this](auto msg) {
this->writeConnectionMessageReceived(msg);
});
QObject::connect(this->writeConnection_.get(),
&Communi::IrcConnection::connected, this, [this] {
this->onWriteConnected(this->writeConnection_.get());
});
this->connections_.managedConnect(
this->writeConnection_->connectionLost, [this](bool timeout) {
qCDebug(chatterinoIrc)
<< "Write connection reconnect requested. Timeout:" << timeout;
this->writeConnection_->smartReconnect.invoke();
});
// Listen to read connection message signals
this->readConnection_.reset(new IrcConnection);
this->readConnection_->moveToThread(QCoreApplication::instance()->thread());
QObject::connect(this->readConnection_.get(),
&Communi::IrcConnection::messageReceived, this,
[this](auto msg) {
this->readConnectionMessageReceived(msg);
});
QObject::connect(this->readConnection_.get(),
&Communi::IrcConnection::privateMessageReceived, this,
[this](auto msg) {
this->privateMessageReceived(msg);
});
QObject::connect(this->readConnection_.get(),
&Communi::IrcConnection::connected, this, [this] {
this->onReadConnected(this->readConnection_.get());
});
QObject::connect(this->readConnection_.get(),
&Communi::IrcConnection::disconnected, this, [this] {
this->onDisconnected();
});
this->connections_.managedConnect(
this->readConnection_->connectionLost, [this](bool timeout) {
qCDebug(chatterinoIrc)
<< "Read connection reconnect requested. Timeout:" << timeout;
if (timeout)
{
// Show additional message since this is going to interrupt a
// connection that is still "connected"
this->addGlobalSystemMessage(
"Server connection timed out, reconnecting");
}
this->readConnection_->smartReconnect.invoke();
});
}
void AbstractIrcServer::initializeIrc()
{
assert(!this->initialized_);
if (this->hasSeparateWriteConnection())
{
this->initializeConnectionSignals(this->writeConnection_.get(),
ConnectionType::Write);
this->initializeConnectionSignals(this->readConnection_.get(),
ConnectionType::Read);
}
else
{
this->initializeConnectionSignals(this->readConnection_.get(),
ConnectionType::Both);
}
this->initialized_ = true;
}
void AbstractIrcServer::connect()
{
assert(this->initialized_);
this->disconnect();
if (this->hasSeparateWriteConnection())
{
this->initializeConnection(this->writeConnection_.get(), Write);
this->initializeConnection(this->readConnection_.get(), Read);
}
else
{
this->initializeConnection(this->readConnection_.get(), Both);
}
}
void AbstractIrcServer::open(ConnectionType type)
{
std::lock_guard<std::mutex> lock(this->connectionMutex_);
if (type == Write)
{
this->writeConnection_->open();
}
if (type & Read)
{
this->readConnection_->open();
}
}
void AbstractIrcServer::addGlobalSystemMessage(const QString &messageText)
{
std::lock_guard<std::mutex> lock(this->channelMutex);
MessageBuilder b(systemMessage, messageText);
auto message = b.release();
for (std::weak_ptr<Channel> &weak : this->channels.values())
{
std::shared_ptr<Channel> chan = weak.lock();
if (!chan)
{
continue;
}
chan->addMessage(message);
}
}
void AbstractIrcServer::disconnect()
{
std::lock_guard<std::mutex> locker(this->connectionMutex_);
this->readConnection_->close();
if (this->hasSeparateWriteConnection())
{
this->writeConnection_->close();
}
}
void AbstractIrcServer::sendMessage(const QString &channelName,
const QString &message)
{
this->sendRawMessage("PRIVMSG #" + channelName + " :" + message);
}
void AbstractIrcServer::sendRawMessage(const QString &rawMessage)
{
std::lock_guard<std::mutex> locker(this->connectionMutex_);
if (this->hasSeparateWriteConnection())
{
this->writeConnection_->sendRaw(rawMessage);
}
else
{
this->readConnection_->sendRaw(rawMessage);
}
}
void AbstractIrcServer::writeConnectionMessageReceived(
Communi::IrcMessage *message)
{
(void)message;
}
ChannelPtr AbstractIrcServer::getOrAddChannel(const QString &dirtyChannelName)
{
auto channelName = this->cleanChannelName(dirtyChannelName);
// try get channel
ChannelPtr chan = this->getChannelOrEmpty(channelName);
if (chan != Channel::getEmpty())
{
return chan;
}
std::lock_guard<std::mutex> lock(this->channelMutex);
// value doesn't exist
chan = this->createChannel(channelName);
if (!chan)
{
return Channel::getEmpty();
}
this->channels.insert(channelName, chan);
this->connections_.managedConnect(chan->destroyed, [this, channelName] {
// fourtf: issues when the server itself is destroyed
qCDebug(chatterinoIrc) << "[AbstractIrcServer::addChannel]"
<< channelName << "was destroyed";
this->channels.remove(channelName);
if (this->readConnection_)
{
this->readConnection_->sendRaw("PART #" + channelName);
}
});
// join IRC channel
{
std::lock_guard<std::mutex> lock2(this->connectionMutex_);
if (this->readConnection_)
{
if (this->readConnection_->isConnected())
{
this->joinBucket_->send(channelName);
}
}
}
return chan;
}
ChannelPtr AbstractIrcServer::getChannelOrEmpty(const QString &dirtyChannelName)
{
auto channelName = this->cleanChannelName(dirtyChannelName);
std::lock_guard<std::mutex> lock(this->channelMutex);
// try get special channel
ChannelPtr chan = this->getCustomChannel(channelName);
if (chan)
{
return chan;
}
// value exists
auto it = this->channels.find(channelName);
if (it != this->channels.end())
{
chan = it.value().lock();
if (chan)
{
return chan;
}
}
return Channel::getEmpty();
}
std::vector<std::weak_ptr<Channel>> AbstractIrcServer::getChannels()
{
std::lock_guard lock(this->channelMutex);
std::vector<std::weak_ptr<Channel>> channels;
for (auto &&weak : this->channels.values())
{
channels.push_back(weak);
}
return channels;
}
void AbstractIrcServer::onReadConnected(IrcConnection *connection)
{
(void)connection;
std::lock_guard lock(this->channelMutex);
// join channels
for (auto &&weak : this->channels)
{
if (auto channel = weak.lock())
{
this->joinBucket_->send(channel->getName());
}
}
// connected/disconnected message
auto connectedMsg = makeSystemMessage("connected");
connectedMsg->flags.set(MessageFlag::ConnectedMessage);
auto reconnected = makeSystemMessage("reconnected");
reconnected->flags.set(MessageFlag::ConnectedMessage);
for (std::weak_ptr<Channel> &weak : this->channels.values())
{
std::shared_ptr<Channel> chan = weak.lock();
if (!chan)
{
continue;
}
LimitedQueueSnapshot<MessagePtr> snapshot = chan->getMessageSnapshot();
bool replaceMessage =
snapshot.size() > 0 && snapshot[snapshot.size() - 1]->flags.has(
MessageFlag::DisconnectedMessage);
if (replaceMessage)
{
chan->replaceMessage(snapshot[snapshot.size() - 1], reconnected);
}
else
{
chan->addMessage(connectedMsg);
}
chan->connected.invoke();
}
this->falloffCounter_ = 1;
}
void AbstractIrcServer::onWriteConnected(IrcConnection *connection)
{
(void)connection;
}
void AbstractIrcServer::onDisconnected()
{
std::lock_guard<std::mutex> lock(this->channelMutex);
MessageBuilder b(systemMessage, "disconnected");
b->flags.set(MessageFlag::DisconnectedMessage);
auto disconnectedMsg = b.release();
for (std::weak_ptr<Channel> &weak : this->channels.values())
{
std::shared_ptr<Channel> chan = weak.lock();
if (!chan)
{
continue;
}
chan->addMessage(disconnectedMsg);
}
}
std::shared_ptr<Channel> AbstractIrcServer::getCustomChannel(
const QString &channelName)
{
(void)channelName;
return nullptr;
}
QString AbstractIrcServer::cleanChannelName(const QString &dirtyChannelName)
{
// This function is a Noop only for IRC, for Twitch it removes a leading '#' and lowercases the name
return dirtyChannelName;
}
void AbstractIrcServer::addFakeMessage(const QString &data)
{
auto fakeMessage = Communi::IrcMessage::fromData(
data.toUtf8(), this->readConnection_.get());
if (fakeMessage->command() == "PRIVMSG")
{
this->privateMessageReceived(
static_cast<Communi::IrcPrivateMessage *>(fakeMessage));
}
else
{
this->readConnectionMessageReceived(fakeMessage);
}
}
void AbstractIrcServer::privateMessageReceived(
Communi::IrcPrivateMessage *message)
{
(void)message;
}
void AbstractIrcServer::readConnectionMessageReceived(
Communi::IrcMessage *message)
{
}
void AbstractIrcServer::forEachChannel(std::function<void(ChannelPtr)> func)
{
std::lock_guard<std::mutex> lock(this->channelMutex);
for (std::weak_ptr<Channel> &weak : this->channels.values())
{
ChannelPtr chan = weak.lock();
if (!chan)
{
continue;
}
func(chan);
}
}
} // namespace chatterino