#include "skynet.h"
#include "globals.h"
#include <QMutex>
//#include "dialogs/viewcertdialog.h"
#include "contacts.h"
#include "openssltool.h"
//#include <QMessageBox> //debug
//#include "dialogs/forgedcertdialog.h"
#include <QDebug>
#include "history.h"
#include "dhparam.h"
#include "askpassword.h"
#include "settings.h"

SkyNet::SkyNet()
    : nodes(config_dbname), QObject(0)
{
    self_aware = false;

PICA_client_callbacks cbs = {
                            newmsg_cb,
                            msgok_cb,
                            c2c_established_cb,
                            c2c_failed,
                            accept_cb,
                            notfound_cb,
                            c2c_closed_cb,
                            nodelist_cb,
                            peer_cert_verify_cb,
                            accept_file_cb,
                            accepted_file_cb,
                            denied_file_cb,
                            file_progress,
                            file_control,
							file_finished,
							c2n_established_cb,
							c2n_failed_cb,
							c2n_closed_cb,
							listener_error_cb
                            };

PICA_client_init(&cbs);

this->active_nodelink = NULL;
this->acc = NULL;
this->listener = NULL;

connect(this, SIGNAL(PeerCertificateReceived(QByteArray,QString,bool*)), this, SLOT(verify_peer_cert(QByteArray,QString,bool*)),Qt::DirectConnection);

event_loop_timer_id = startTimer(0);

}

void SkyNet::nodelink_activated(PICA_c2n *c2n)
{
	for (int i = 0; i < connecting_nodes.size(); i++)
	{
		if (connecting_nodes[i].first == c2n)
		{
			node_status_changed(connecting_nodes[i].second, true);
			connecting_nodes.removeAt(i);
			break;
		}
	}

	if (self_aware)
	{
		PICA_close_c2n(c2n);
	}
	else
	{
		self_aware = true;
		active_nodelink = c2n;

		emit BecameSelfAware();
		//
		//restore old peer connections, if any
		QList<QByteArray> c2c_peer_ids;

		//load undelivered messages from history
		if (msgqueues.isEmpty())
		{
			History h(config_dbname, Accounts::GetCurrentAccount().id);

			msgqueues = h.GetUndeliveredMessages();
		}

		//load file transfers to be completed
		// sndfilequeues = ...

		QMap<QByteArray, QList<QString> > queues = msgqueues;

		queues.unite(sndfilequeues);

		c2c_peer_ids = queues.uniqueKeys();

		for (int i = 0; i < c2c_peer_ids.size(); i++)
		{
			int ret;
			struct PICA_c2c *chan = NULL;

			ret = PICA_new_c2c(active_nodelink, (const unsigned char*)c2c_peer_ids[i].constData(), NULL, &chan);

			qDebug()<<"restoring c2c to "<<c2c_peer_ids[i]<<" ret ="<<ret<<"\n";
		}

		//start timer
		retry_timer_id = startTimer(10000);
		//
	}


}

void SkyNet::nodelink_closed(PICA_c2n *c2n, int error)
{
	if (self_aware && c2n == active_nodelink)
	{
		active_nodelink = NULL;
		emit LostSelfAwareness();
	}
	else
	{
		for (int i = 0; i < connecting_nodes.size(); i++)
		{
			if (connecting_nodes[i].first == c2n)
			{
				connecting_nodes.removeAt(i);
				break;
			}
		}
	}
}

void SkyNet::nodelink_failed(PICA_c2n *c2n, int error)
{
	for (int i = 0; i < connecting_nodes.size(); i++)
	{
		if (connecting_nodes[i].first == c2n)
		{
			switch(error)
			{
			case PICA_ERRPROTONEW:

				emit StatusMsg(QString("Node %1:%2 has newer protocol version. Please check if update for pica-client is available")
							   .arg(connecting_nodes[i].second.address)
							   .arg(connecting_nodes[i].second.port),
							   true);
				break;

			case PICA_ERRPROTOOLD:

				emit StatusMsg(QString("Node %1:%2 has older protocol. Disconnected.")
							   .arg(connecting_nodes[i].second.address)
							   .arg(connecting_nodes[i].second.port),
							   false);
				break;
			}

			node_status_changed(connecting_nodes[i].second, false);
			connecting_nodes.removeAt(i);
			break;
		}
	}
	if (connecting_nodes.empty())
		emit LostSelfAwareness();
}



void SkyNet::node_status_changed(Nodes::NodeRecord nr, bool alive)
{
    nodes.UpdateStatus(nr, alive);
}

void SkyNet::verify_peer_cert(QByteArray peer_id, QString cert_pem, bool *verified)
{
//    ViewCertDialog vcd;
//    vcd.SetCert(cert_pem);
//    vcd.exec();
    Contacts cnt(config_dbname, Accounts::GetCurrentAccount().id);
    QString stored_cert;


    if (!cnt.Exists(peer_id) && cnt.isOK())
    {
        cnt.Add(peer_id, Contacts::temporary);
    }
    if ((stored_cert = cnt.GetContactCert(peer_id)).isEmpty())
    {
        cnt.SetContactCert(peer_id, cert_pem);

        QString name = OpenSSLTool::NameFromCertString(cert_pem);

        cnt.SetContactName(peer_id, name);

        emit ContactsUpdated();
    }
    else
    {//compare certificates
        QString strip_pem[4] = {
           "-----BEGIN CERTIFICATE-----",
           "-----END CERTIFICATE-----",
           "-----BEGIN X509 CERTIFICATE-----",
           "-----END X509 CERTIFICATE-----"
        };
        QString stripped_stored_cert = stored_cert;
        QString stripped_received_cert = cert_pem;

        for (int i = 0; i < 4; i++)
        {
            stripped_stored_cert.replace(strip_pem[i], "");
            stripped_received_cert.replace(strip_pem[i], "");
        }

        QByteArray stored_DER, received_DER;

        stored_DER = QByteArray::fromBase64(stripped_stored_cert.toAscii().constData());
        received_DER = QByteArray::fromBase64(stripped_received_cert.toAscii().constData());

        if (stored_DER.size() != received_DER.size() ||
        memcmp(stored_DER.constData(), received_DER.constData(), stored_DER.size()) != 0)
        {//put scary message here
            *verified = false;
            emit CertificateForged(peer_id, cert_pem, stored_cert);
        }


    }
}

void SkyNet::timerEvent(QTimerEvent *e)
{
	if (e->timerId() == event_loop_timer_id)
	{
		if (connecting_nodes.size() > 0 || self_aware)
		{
			int ret;
			QVector<struct PICA_c2n *> nodelinks;

			nodelinks.reserve(connecting_nodes.size() + 1);

			for (int i = 0; i < connecting_nodes.size(); i++)
				nodelinks.append(connecting_nodes[i].first);

			if (self_aware)
				nodelinks.append(active_nodelink);

			nodelinks.append(NULL);

			ret = PICA_event_loop(nodelinks.data(), 1);

			if (ret != PICA_OK)
				emit StatusMsg("event loop error!", true);//show some error message
		}

		return;
	}


    if (self_aware)
    {
		QMap<QByteArray, QList<QString> > queues = msgqueues;
		queues.unite(sndfilequeues);

		QList<QByteArray> c2c_peer_ids = queues.uniqueKeys();

		c2c_peer_ids = filter_existing_chans(c2c_peer_ids);

		for (int i = 0; i < c2c_peer_ids.size(); i++)
		{
			int ret;

			struct PICA_c2c *chan = NULL;

			ret = PICA_new_c2c(active_nodelink, (const unsigned char*)c2c_peer_ids[i].constData(), NULL, &chan);

			qDebug()<<"restoring c2c to "<<c2c_peer_ids[i]<<" ret ="<<ret<<" in timer event\n";

		}

    }
else
    {
    killTimer(e->timerId());
    Accounts::AccountRecord acc = this->CurrentAccount();
    Join(acc);
    }
}

bool SkyNet::open_account()
{
    int ret;

    AskPassword::clear();
    do
    {
        ret = PICA_open_acc(skynet_account.cert_file.toUtf8().constData(),
                            skynet_account.pkey_file.toUtf8().constData(),
                            DHParam::GetDHParamFilename().toUtf8().constData(),
                            AskPassword::ask_password_cb,
                            &acc);

       if (ret == PICA_ERRINVPKEYPASSPHRASE)
            AskPassword::setInvalidPassword();
    } while (ret == PICA_ERRINVPKEYPASSPHRASE);

    qDebug() << "PICA_open_acc() returned " << ret;

    if (ret != PICA_OK)
        return false;

    return true;
}

void SkyNet::Join(Accounts::AccountRecord &accrec)
{
	PICA_directc2c_config directc2c_cfg = PICA_DIRECTC2C_CFG_DISABLED;
	Settings st(config_dbname);

    skynet_account = accrec;

	QList<Nodes::NodeRecord> noderecords = nodes.GetNodes();

    if (!acc)
    {
        if (!open_account())
            return;
    }

	if (noderecords.count()==0)
    {
		emit StatusMsg(QString(tr("No known Pica Pica nodes")), true);
        return;
    }

	directc2c_cfg = (PICA_directc2c_config)st.loadValue("direct_c2c.state", 1).toInt();

	if (!listener && directc2c_cfg == PICA_DIRECTC2C_CFG_ALLOWINCOMING)
	{
		int pub_port = st.loadValue("direct_c2c.public_port", 2298).toInt();
		int loc_port = st.loadValue("direct_c2c.local_port", 2298).toInt();

		int ret = PICA_new_listener(acc,
									st.loadValue("direct_c2c.public_addr", "0.0.0.0").toString().toAscii().constData(),
									pub_port,
									loc_port, &listener);
		if (ret != PICA_OK)
		{
			emit StatusMsg(QString(tr("Failed to open port %1 for incoming direct connections")).arg(loc_port), true);
			directc2c_cfg = PICA_DIRECTC2C_CFG_CONNECTONLY;
		}
	}

	if (!connecting_nodes.empty())
	{
		for (int i = 0; i < connecting_nodes.size(); i++)
			PICA_close_c2n(connecting_nodes[i].first);

		connecting_nodes.clear();
	}

	for (int i = 0; i < noderecords.size();i++)
	{
		int ret;
		struct PICA_c2n *c2n = NULL;

		ret = PICA_new_c2n(acc, noderecords[i].address.toUtf8().constData(), noderecords[i].port,
						   directc2c_cfg, listener, &c2n);

		if (ret == PICA_OK)
		{
			connecting_nodes.append(QPair<struct PICA_c2n *, Nodes::NodeRecord>(c2n, noderecords[i]));
		}
		else
		{
			node_status_changed(noderecords[i], false);
		}
	}
/*
    for (int i=0;i<nodelist.count() && !self_aware;i++)
    {//TODO FIXME сделать запуск потоков порциями, а не все сразу
        threads.append(new NodeThread(nodelist[i],&self_aware, acc,&nodelink, &write_mutex));
        connect(threads.last(), SIGNAL(finished()),this,SLOT(nodethread_finished()));
        connect(threads.last(), SIGNAL(NodeStatusChanged(QString,quint16,bool)), this, SLOT(node_status_changed(QString,quint16,bool)));
        connect(threads.last(), SIGNAL(ConnectedToNode(QString,quint16,NodeThread*)), this, SLOT(nodethread_connected(QString,quint16,NodeThread*)));
        connect(threads.last(), SIGNAL(ErrorMsg(QString)), this, SIGNAL(ErrMsgFromNode(QString)));
	}*/

}

void SkyNet::Exit()
{
	if (self_aware && active_nodelink)
	{
		PICA_close_c2n(active_nodelink);
		active_nodelink = NULL;
	}

    self_aware = false;

	killTimer(retry_timer_id);

	msgqueues.clear();

	for (int i = 0; i < connecting_nodes.size(); i++)
		PICA_close_c2n(connecting_nodes[i].first);

	connecting_nodes.clear();

	emit LostSelfAwareness();
}

bool SkyNet::isSelfAware()
{
    return self_aware;
}

void SkyNet::SendFile(QByteArray to, QString filepath)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;



if ( (iptr = find_active_chan(to)) )
    {
        ret = PICA_send_file(iptr, filepath.toUtf8().data());

        if (ret != PICA_OK)
        {
            //show error somewhere somehow
        }


        return;
    }

    if (sndfilequeues.contains(to))
    {
    //sending multiple files is not supported yet
    }
    else
    {
       struct PICA_c2c *chan = NULL;

	   ret = PICA_new_c2c(active_nodelink, (const unsigned char*)to.constData(), NULL, &chan);

       QList<QString> l;
       l.append(filepath);
       sndfilequeues[to] = l;
    }



    if (ret!= PICA_OK)
    {
    //report error
    }
}

void SkyNet::AcceptFile(QByteArray from, QString filepath)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;


if ( (iptr = find_active_chan(from)) )
    {
        ret = PICA_accept_file(iptr, filepath.toUtf8().data(), filepath.toUtf8().size());

        qDebug() << "PICA_accept_file(" << filepath.toUtf8().data() << ", " << filepath.toUtf8().size() << ") returned " << ret << "\n";
        if (ret != PICA_OK)
        {
            //show error somewhere somehow
        }
    }

}

void SkyNet::DenyFile(QByteArray from)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;


if ( (iptr = find_active_chan(from)) )
    {
        ret = PICA_deny_file(iptr);

        qDebug() << "PICA_deny_file() returned " << ret << "\n";
        if (ret != PICA_OK)
        {
            //show error somewhere somehow
        }
    }

}

void SkyNet::PauseFile(QByteArray peer_id, bool pause_sending)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;


if ( (iptr = find_active_chan(peer_id)) )
    {
        qDebug() << "calling PICA_pause_file(" << iptr << "," << pause_sending << ")\n";
        ret = PICA_pause_file(iptr, (int)pause_sending );

        if (ret != PICA_OK)
        {
            qDebug() << "PICA_pause_file() returned " << ret << "\n";
        }
    }

}

void SkyNet::ResumeFile(QByteArray peer_id, bool resume_sending)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;


if ( (iptr = find_active_chan(peer_id)) )
    {
        ret = PICA_resume_file(iptr, (int)resume_sending );

        if (ret != PICA_OK)
        {
            //show error somewhere somehow
        }
    }

}

void SkyNet::CancelFile(QByteArray peer_id, bool cancel_sending)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;


if ( (iptr = find_active_chan(peer_id)) )
    {
        ret = PICA_cancel_file(iptr, (int)cancel_sending );

        if (ret != PICA_OK)
        {
            //show error somewhere somehow
        }
    }

}

void SkyNet::SendMessage(QByteArray to, QString msg)
{
int ret = PICA_OK;
struct PICA_c2c *iptr;



if ( (iptr = find_active_chan(to)) )
{
    //write_mutex.lock();//<<
    ret = PICA_send_msg(iptr, msg.toUtf8().data(), msg.toUtf8().size());
    //write_mutex.unlock();//>>

    if (ret != PICA_OK)
        emit UnableToDeliver(to, msg);


    return;
}

    if (msgqueues.contains(to))
    {
        msgqueues[to].append(msg);
    }
    else
    {
        struct PICA_c2c *chan = NULL;

		ret = PICA_new_c2c(active_nodelink, (const unsigned char*)to.constData(), NULL, &chan);

        QList<QString> l;
        l.append(msg);
        msgqueues[to] = l;
    }




    if (ret != PICA_OK)
        emit UnableToDeliver(to, msg);

}

void SkyNet::flush_queues(QByteArray to)
{
    struct PICA_c2c *chan;
    int ret;

    if (self_aware && (msgqueues.contains(to) || sndfilequeues.contains(to)))
    {
        qDebug()<<"flushing "<<to<<" message queue\n";

        if ((chan = find_active_chan(to)))
        {
            /////// messages
            while( !msgqueues[to].empty() )
            {
                ret = PICA_send_msg(chan, msgqueues[to].first().toUtf8().data(), msgqueues[to].first().toUtf8().size());

                if (ret != PICA_OK)
                {
                    emit UnableToDeliver(to, msgqueues[to].first());
                    break;
                }

                msgqueues[to].removeFirst();

            }

            if (msgqueues[to].empty())
                msgqueues.remove(to);


           ///////// files
           while (!sndfilequeues[to].empty())
           {
                ret = PICA_send_file(chan, sndfilequeues[to].first().toUtf8().data());

                if (ret != PICA_OK)
                {
                    //report error somehow
                    break;
                }

                sndfilequeues[to].removeFirst();
           }

           if (sndfilequeues[to].empty())
                sndfilequeues.remove(to);
        }
    }
}

struct PICA_c2c * SkyNet::find_active_chan(QByteArray peer_id)
{
if (!active_nodelink)
  return NULL;

struct PICA_c2c *iptr = active_nodelink->chan_list_head;

while(iptr)
    {
    if (iptr->state == PICA_C2C_STATE_ACTIVE && QByteArray((const char*)iptr->peer_id, PICA_ID_SIZE) == peer_id)
        break;

        iptr = iptr->next;
    }

return iptr;
}

QList<QByteArray> SkyNet::filter_existing_chans(QList<QByteArray> peer_ids)
{
    QList<QByteArray> ret = peer_ids;

	if (!active_nodelink)
      return ret;

	struct PICA_c2c *iptr = active_nodelink->chan_list_head;

    while(iptr)
        {
        if (peer_ids.contains(QByteArray((const char*)iptr->peer_id, PICA_ID_SIZE)))
            ret.removeOne((const char*)iptr->peer_id);

        iptr = iptr->next;
        }

    return ret;
}

void SkyNet::emit_Delivered(QByteArray to)
{
emit Delivered(to);
}

void SkyNet::emit_MessageReceived(QByteArray from, QString msg)
{
emit MessageReceived(from, msg);
}

void SkyNet::emit_UnableToDeliver(QByteArray to, QString msg)
{
emit UnableToDeliver(to, msg);
}

void SkyNet::emit_PeerCertificateReceived(QByteArray peer_id, QString cert_pem, bool *verified)
{
    emit PeerCertificateReceived(peer_id, cert_pem, verified);
}

void SkyNet::emit_IncomingFileRequestReceived(QByteArray peer_id, quint64 file_size, QString filename)
{
    emit IncomingFileRequestReceived(peer_id, file_size, filename);
}

void SkyNet::emit_OutgoingFileRequestAccepted(QByteArray peer_id)
{
    emit OutgoingFileRequestAccepted(peer_id);
}

void SkyNet::emit_OutgoingFileRequestDenied(QByteArray peer_id)
{
    emit OutgoingFileRequestDenied(peer_id);
}

void SkyNet::emit_FileProgress(QByteArray peer_id, quint64 bytes_sent, quint64 bytes_received)
{
    emit FileProgress(peer_id, bytes_sent, bytes_received);
}

void SkyNet::emit_IncomingFilePaused(QByteArray peer_id)
{
    emit IncomingFilePaused(peer_id);
}

void SkyNet::emit_IncomingFileCancelled(QByteArray peer_id)
{
    emit IncomingFileCancelled(peer_id);
}

void SkyNet::emit_IncomingFileIoError(QByteArray peer_id)
{
    emit IncomingFileIoError(peer_id);
}

void SkyNet::emit_IncomingFileResumed(QByteArray peer_id)
{
    emit IncomingFileResumed(peer_id);
}

void SkyNet::emit_OutgoingFilePaused(QByteArray peer_id)
{
    emit OutgoingFilePaused(peer_id);
}

void SkyNet::emit_OutgoingFileCancelled(QByteArray peer_id)
{
    emit OutgoingFileCancelled(peer_id);
}

void SkyNet::emit_OutgoingFileIoError(QByteArray peer_id)
{
    emit OutgoingFileIoError(peer_id);
}

void SkyNet::emit_OutgoingFileResumed(QByteArray peer_id)
{
    emit OutgoingFileResumed(peer_id);
}

void SkyNet::emit_OutgoingFileFinished(QByteArray peer_id)
{
    emit OutgoingFileFinished(peer_id);
}

void SkyNet::emit_IncomingFileFinished(QByteArray peer_id)
{
    emit IncomingFileFinished(peer_id);
}

void SkyNet::emit_c2cClosed(QByteArray peer_id)
{
    emit c2cClosed(peer_id);
}


//callbacks

void SkyNet::newmsg_cb(const unsigned char *peer_id, const char *msgbuf, unsigned int nb, int type)
{
QString msg = QString::fromUtf8(msgbuf, nb);

skynet->emit_MessageReceived(QByteArray((const char*)peer_id, PICA_ID_SIZE), msg);
}

void SkyNet::msgok_cb(const unsigned char *peer_id)
{
skynet->emit_Delivered(QByteArray((const char*)peer_id, PICA_ID_SIZE));
}

void SkyNet::c2c_established_cb(const unsigned char *peer_id)
{
skynet->flush_queues(QByteArray((const char*)peer_id, PICA_ID_SIZE));
}

void SkyNet::c2c_failed(const unsigned char *peer_id)
{
    qDebug()<<"c2c failed ("<<QByteArray((const char*)peer_id, PICA_ID_SIZE).toBase64()<<")\n";
}

int SkyNet::accept_cb(const unsigned char *caller_id)
{
return 1; //implement black list
}

void SkyNet::notfound_cb(const unsigned char *callee_id)
{
  qDebug()<<"not found ("<<QByteArray((const char*)callee_id, PICA_ID_SIZE).toBase64()<<")\n";

  /*
  if (skynet->msgqueues.contains(callee_id))
  {
    while ( ! skynet->msgqueues[callee_id].empty())
    {
      skynet->emit_UnableToDeliver(callee_id, skynet->msgqueues[callee_id].last());
      skynet->msgqueues[callee_id].removeLast();
    }
    // msgqueues.remove(callee_id) was forgotten
  }
  */
}

void SkyNet::c2c_closed_cb(const unsigned char *peer_id, int reason)
{
    qDebug()<<"c2c closed ("<<QByteArray((const char*)peer_id, PICA_ID_SIZE).toBase64()
            <<", error_code =" << reason << ")\n";

    skynet->emit_c2cClosed(QByteArray((const char*)peer_id, PICA_ID_SIZE));
}

void SkyNet::nodelist_cb(int type, void *addr_bin, const char *addr_str, unsigned int port)
{
    Nodes::NodeRecord nr = {addr_str, port};
    skynet->nodes.Add(nr);
}

int SkyNet::peer_cert_verify_cb(const unsigned char *peer_id, const char *cert_pem, unsigned int nb)
{
    bool verified = true;

    skynet->emit_PeerCertificateReceived(QByteArray((const char*)peer_id, PICA_ID_SIZE), QString::fromAscii(cert_pem, nb), &verified);

    if (!verified)
        return 0;

    return 1;
}

int SkyNet::accept_file_cb(const unsigned char *peer_id, uint64_t file_size, const char *filename, unsigned int filename_size)
{
    skynet->emit_IncomingFileRequestReceived(QByteArray((const char*)peer_id, PICA_ID_SIZE),
                 file_size, QString::fromUtf8(filename, filename_size));

    return 2;//??? accept later code
}

void SkyNet::accepted_file_cb(const unsigned char *peer_id)
{
    qDebug()<<"FILE: file was accepted by remote side\n";

    skynet->emit_OutgoingFileRequestAccepted(QByteArray((const char *)peer_id, PICA_ID_SIZE));
}

void SkyNet::denied_file_cb(const unsigned char *peer_id)
{
    skynet->emit_OutgoingFileRequestDenied(QByteArray((const char *)peer_id, PICA_ID_SIZE));
}

void SkyNet::file_progress(const unsigned char *peer_id, uint64_t sent, uint64_t received)
{
    qDebug()<<"FILE: file progress" << sent << " sent " << received << "received\n";
    skynet->emit_FileProgress(QByteArray((const char *)peer_id, PICA_ID_SIZE), sent, received);
}

void SkyNet::file_control(const unsigned char *peer_id, unsigned int sender_cmd, unsigned int receiver_cmd)
{
    qDebug() << "file_control callback: sender_cmd=" << sender_cmd << ", receiver_cmd=" << receiver_cmd << "\n";


    if (sender_cmd != PICA_PROTO_FILECONTROL_VOID && receiver_cmd == PICA_PROTO_FILECONTROL_VOID)
    {
        switch(sender_cmd)
        {
        case PICA_PROTO_FILECONTROL_PAUSE:
        skynet->emit_IncomingFilePaused(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;

        case PICA_PROTO_FILECONTROL_RESUME:
        skynet->emit_IncomingFileResumed(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;

        case PICA_PROTO_FILECONTROL_CANCEL:
        skynet->emit_IncomingFileCancelled(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;

        case PICA_PROTO_FILECONTROL_IOERROR:
        skynet->emit_IncomingFileIoError(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;
        }
    }
    else if (sender_cmd == PICA_PROTO_FILECONTROL_VOID && receiver_cmd != PICA_PROTO_FILECONTROL_VOID)
    {
        switch(receiver_cmd)
        {
        case PICA_PROTO_FILECONTROL_PAUSE:
        skynet->emit_OutgoingFilePaused(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;

        case PICA_PROTO_FILECONTROL_RESUME:
        skynet->emit_OutgoingFileResumed(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;

        case PICA_PROTO_FILECONTROL_CANCEL:
        skynet->emit_OutgoingFileCancelled(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;

        case PICA_PROTO_FILECONTROL_IOERROR:
        skynet->emit_OutgoingFileIoError(QByteArray((const char *)peer_id, PICA_ID_SIZE));
        break;
        }
    }
}

void SkyNet::file_finished(const unsigned char *peer_id, int sending)
{
    qDebug()<< "file_finished callback\n";

    if (sending)
        skynet->emit_OutgoingFileFinished(QByteArray((const char *)peer_id, PICA_ID_SIZE));
    else
        skynet->emit_IncomingFileFinished(QByteArray((const char *)peer_id, PICA_ID_SIZE));
}

void SkyNet::c2n_established_cb(struct PICA_c2n *c2n)
{
	skynet->nodelink_activated(c2n);
}

void SkyNet::c2n_failed_cb(struct PICA_c2n *c2n, int error)
{
	skynet->nodelink_failed(c2n, error);
}

void SkyNet::c2n_closed_cb(struct PICA_c2n *c2n, int error)
{
	skynet->nodelink_closed(c2n, error);
}

void SkyNet::listener_error_cb(struct PICA_listener *lst, int errorcode)
{

}