initial commit

iris-legacy/cutestuff/legacy/ndns.cpp

@@ -0,0 +1,393 @@
+/*
+ * ndns.cpp - native DNS resolution
+ * Copyright (C) 2001, 2002  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+//! \class NDns ndns.h
+//! \brief Simple DNS resolution using native system calls
+//!
+//! This class is to be used when Qt's QDns is not good enough.  Because QDns
+//! does not use threads, it cannot make a system call asyncronously.  Thus,
+//! QDns tries to imitate the behavior of each platform's native behavior, and
+//! generally falls short.
+//!
+//! NDns uses a thread to make the system call happen in the background.  This
+//! gives your program native DNS behavior, at the cost of requiring threads
+//! to build.
+//!
+//! \code
+//! #include "ndns.h"
+//!
+//! ...
+//!
+//! NDns dns;
+//! dns.resolve("psi.affinix.com");
+//!
+//! // The class will emit the resultsReady() signal when the resolution
+//! // is finished. You may then retrieve the results:
+//!
+//! QHostAddress ip_address = dns.result();
+//!
+//! // or if you want to get the IP address as a string:
+//!
+//! QString ip_address = dns.resultString();
+//! \endcode
+
+#include "ndns.h"
+
+#include <QCoreApplication>
+#include <q3socketdevice.h>
+#include <q3ptrlist.h>
+#include <qeventloop.h>
+//Added by qt3to4:
+#include <QCustomEvent>
+#include <QEvent>
+#include <Q3CString>
+#include <QPointer>
+
+#ifdef Q_OS_UNIX
+#include <netdb.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
+#ifdef Q_OS_WIN32
+#include <windows.h>
+#endif
+
+#include "psilogger.h"
+
+// CS_NAMESPACE_BEGIN
+
+//! \if _hide_doc_
+class NDnsWorker : public QThread
+{
+public:
+	NDnsWorker(QObject *, const Q3CString &);
+	~NDnsWorker();
+
+	bool success;
+	bool cancelled;
+	QHostAddress addr;
+
+protected:
+	void run();
+
+private:
+	Q3CString host;
+};
+//! \endif
+
+//----------------------------------------------------------------------------
+// NDnsManager
+//----------------------------------------------------------------------------
+#ifndef HAVE_GETHOSTBYNAME_R
+#ifndef Q_WS_WIN
+static QMutex *workerMutex = 0;
+static QMutex *workerCancelled = 0;
+#endif
+#endif
+static NDnsManager *manager_instance = 0;
+bool winsock_init = false;
+
+class NDnsManager::Item
+{
+public:
+	NDns *ndns;
+	NDnsWorker *worker;
+};
+
+class NDnsManager::Private
+{
+public:
+	Item *find(const NDns *n)
+	{
+		Q3PtrListIterator<Item> it(list);
+		for(Item *i; (i = it.current()); ++it) {
+			if(i->ndns == n)
+				return i;
+		}
+		return 0;
+	}
+
+	Item *find(const NDnsWorker *w)
+	{
+		Q3PtrListIterator<Item> it(list);
+		for(Item *i; (i = it.current()); ++it) {
+			if(i->worker == w)
+				return i;
+		}
+		return 0;
+	}
+
+	Q3PtrList<Item> list;
+};
+
+NDnsManager::NDnsManager()
+: QObject(QCoreApplication::instance())
+{
+#ifndef HAVE_GETHOSTBYNAME_R
+#ifndef Q_WS_WIN
+	workerMutex = new QMutex;
+	workerCancelled = new QMutex;
+#endif
+#endif
+
+#ifdef Q_OS_WIN32
+	if(!winsock_init) {
+		winsock_init = true;
+		Q3SocketDevice *sd = new Q3SocketDevice;
+		delete sd;
+	}
+#endif
+
+	d = new Private;
+	d->list.setAutoDelete(true);
+
+	connect(QCoreApplication::instance(), SIGNAL(aboutToQuit()), SLOT(app_aboutToQuit()));
+}
+
+NDnsManager::~NDnsManager()
+{
+	delete d;
+
+#ifndef HAVE_GETHOSTBYNAME_R
+#ifndef Q_WS_WIN
+	delete workerMutex;
+	workerMutex = 0;
+	delete workerCancelled;
+	workerCancelled = 0;
+#endif
+#endif
+}
+
+void NDnsManager::resolve(NDns *self, const QString &name)
+{
+	Item *i = new Item;
+	i->ndns = self;
+	i->worker = new NDnsWorker(this, name.utf8());
+	connect(i->worker, SIGNAL(finished()), SLOT(workerFinished()));
+	d->list.append(i);
+
+	i->worker->start();
+}
+
+void NDnsManager::stop(NDns *self)
+{
+	Item *i = d->find(self);
+	if(!i)
+		return;
+	// disassociate
+	i->ndns = 0;
+
+#ifndef HAVE_GETHOSTBYNAME_R
+#ifndef Q_WS_WIN
+	// cancel
+	workerCancelled->lock();
+	i->worker->cancelled = true;
+	workerCancelled->unlock();
+#endif
+#endif
+
+	d->list.removeRef(i);
+}
+
+bool NDnsManager::isBusy(const NDns *self) const
+{
+	Item *i = d->find(self);
+	return (i ? true: false);
+}
+
+void NDnsManager::workerFinished()
+{
+	NDnsWorker* worker = dynamic_cast<NDnsWorker*>(sender());
+	Q_ASSERT(worker);
+	if (!worker)
+		return;
+	worker->wait(); // ensure that the thread is terminated
+
+	Item *i = d->find(worker);
+	if(i) {
+		QHostAddress addr = i->worker->addr;
+		QPointer<NDns> ndns = i->ndns;
+		d->list.removeRef(i);
+
+		// nuke manager if no longer needed (code that follows MUST BE SAFE!)
+		tryDestroy();
+
+		// requestor still around?
+		if(ndns) {
+			ndns->finished(addr);
+		}
+	}
+
+	worker->deleteLater();
+}
+
+void NDnsManager::tryDestroy()
+{
+// mblsha: NDnsManager is now singleton
+#if 0
+	if(d->list.isEmpty()) {
+		manager_instance = 0;
+		deleteLater();
+	}
+#endif
+}
+
+void NDnsManager::app_aboutToQuit()
+{
+// mblsha: NDnsManager is now singleton
+#if 0
+	while(man) {
+		QCoreApplication::instance()->processEvents(QEventLoop::WaitForMoreEvents);
+	}
+#endif
+}
+
+
+//----------------------------------------------------------------------------
+// NDns
+//----------------------------------------------------------------------------
+
+//! \fn void NDns::resultsReady()
+//! This signal is emitted when the DNS resolution succeeds or fails.
+
+//!
+//! Constructs an NDns object with parent \a parent.
+NDns::NDns(QObject *parent)
+:QObject(parent)
+{
+}
+
+//!
+//! Destroys the object and frees allocated resources.
+NDns::~NDns()
+{
+	stop();
+	PsiLogger::instance()->log(QString("%1 NDns::~NDns()").arg(LOG_THIS));
+}
+
+//!
+//! Resolves hostname \a host (eg. psi.affinix.com)
+void NDns::resolve(const QString &host)
+{
+	PsiLogger::instance()->log(QString("%1 NDns::resolve(%2)").arg(LOG_THIS).arg(host));
+	stop();
+	if(!manager_instance)
+		manager_instance = new NDnsManager;
+	manager_instance->resolve(this, host);
+}
+
+//!
+//! Cancels the lookup action.
+//! \note This will not stop the underlying system call, which must finish before the next lookup will proceed.
+void NDns::stop()
+{
+	PsiLogger::instance()->log(QString("%1 NDns::stop()").arg(LOG_THIS));
+	if(manager_instance)
+		manager_instance->stop(this);
+}
+
+//!
+//! Returns the IP address as QHostAddress.  This will be a Null QHostAddress if the lookup failed.
+//! \sa resultsReady()
+QHostAddress NDns::result() const
+{
+	return addr;
+}
+
+//!
+//! Returns the IP address as a string.  This will be an empty string if the lookup failed.
+//! \sa resultsReady()
+QString NDns::resultString() const
+{
+	if (addr.isNull()) 
+		return QString();
+	else
+		return addr.toString();
+}
+
+//!
+//! Returns TRUE if busy resolving a hostname.
+bool NDns::isBusy() const
+{
+	if(!manager_instance)
+		return false;
+	return manager_instance->isBusy(this);
+}
+
+void NDns::finished(const QHostAddress &a)
+{
+	PsiLogger::instance()->log(QString("%1 NDns::finished(%2)").arg(LOG_THIS).arg(a.toString()));
+	addr = a;
+	resultsReady();
+}
+
+//----------------------------------------------------------------------------
+// NDnsWorker
+//----------------------------------------------------------------------------
+NDnsWorker::NDnsWorker(QObject *_par, const Q3CString &_host)
+: QThread(_par)
+{
+	success = cancelled = false;
+	host = _host.copy(); // do we need this to avoid sharing across threads?
+}
+
+NDnsWorker::~NDnsWorker()
+{
+}
+
+void NDnsWorker::run()
+{
+	hostent *h = 0;
+
+#ifdef HAVE_GETHOSTBYNAME_R
+	hostent buf;
+	char char_buf[1024];
+	int err;
+	gethostbyname_r(host.data(), &buf, char_buf, sizeof(char_buf), &h, &err);
+#else
+#ifndef Q_WS_WIN
+	// lock for gethostbyname
+	QMutexLocker locker(workerMutex);
+
+	// check for cancel
+	workerCancelled->lock();
+	bool cancel = cancelled;
+	workerCancelled->unlock();
+
+	if(!cancel)
+#endif
+		h = gethostbyname(host.data());
+#endif
+
+	// FIXME: not ipv6 clean, currently.
+	if(!h || h->h_addrtype != AF_INET) {
+		success = false;
+		return;
+	}
+
+	in_addr a = *((struct in_addr *)h->h_addr_list[0]);
+	addr.setAddress(ntohl(a.s_addr));
+	success = true;
+}
+
+// CS_NAMESPACE_END

iris-legacy/cutestuff/legacy/ndns.h

@@ -0,0 +1,90 @@
+/*
+ * ndns.h - native DNS resolution
+ * Copyright (C) 2001, 2002  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef CS_NDNS_H
+#define CS_NDNS_H
+
+#include <qobject.h>
+#include <q3cstring.h>
+#include <qthread.h>
+#include <qmutex.h>
+#include <qhostaddress.h>
+//Added by qt3to4:
+#include <QEvent>
+
+// CS_NAMESPACE_BEGIN
+
+class NDnsWorker;
+class NDnsManager;
+
+class NDns : public QObject
+{
+	Q_OBJECT
+public:
+	NDns(QObject *parent=0);
+	~NDns();
+
+	void resolve(const QString &);
+	void stop();
+	bool isBusy() const;
+
+	QHostAddress result() const;
+	QString resultString() const;
+
+signals:
+	void resultsReady();
+
+private:
+	QHostAddress addr;
+
+	friend class NDnsManager;
+	void finished(const QHostAddress &);
+};
+
+class NDnsManager : public QObject
+{
+	Q_OBJECT
+public:
+	~NDnsManager();
+	class Item;
+
+//! \if _hide_doc_
+protected slots:
+	void workerFinished();
+//! \endif
+
+private slots:
+	void app_aboutToQuit();
+
+private:
+	class Private;
+	Private *d;
+
+	friend class NDns;
+	NDnsManager();
+	void resolve(NDns *self, const QString &name);
+	void stop(NDns *self);
+	bool isBusy(const NDns *self) const;
+	void tryDestroy();
+};
+
+// CS_NAMESPACE_END
+
+#endif

iris-legacy/cutestuff/legacy/safedelete.cpp

@@ -0,0 +1,111 @@
+#include "safedelete.h"
+
+#include <qtimer.h>
+
+//----------------------------------------------------------------------------
+// SafeDelete
+//----------------------------------------------------------------------------
+SafeDelete::SafeDelete()
+{
+	lock = 0;
+}
+
+SafeDelete::~SafeDelete()
+{
+	if(lock)
+		lock->dying();
+}
+
+void SafeDelete::deleteLater(QObject *o)
+{
+	if(!lock)
+		deleteSingle(o);
+	else
+		list.append(o);
+}
+
+void SafeDelete::unlock()
+{
+	lock = 0;
+	deleteAll();
+}
+
+void SafeDelete::deleteAll()
+{
+	if(list.isEmpty())
+		return;
+
+	QObjectList::Iterator it = list.begin();
+	for(QObjectList::Iterator it = list.begin(); it != list.end(); ++it)
+		deleteSingle(*it);
+	list.clear();
+}
+
+void SafeDelete::deleteSingle(QObject *o)
+{
+	o->deleteLater();
+}
+
+//----------------------------------------------------------------------------
+// SafeDeleteLock
+//----------------------------------------------------------------------------
+SafeDeleteLock::SafeDeleteLock(SafeDelete *sd)
+{
+	own = false;
+	if(!sd->lock) {
+		_sd = sd;
+		_sd->lock = this;
+	}
+	else
+		_sd = 0;
+}
+
+SafeDeleteLock::~SafeDeleteLock()
+{
+	if(_sd) {
+		_sd->unlock();
+		if(own)
+			delete _sd;
+	}
+}
+
+void SafeDeleteLock::dying()
+{
+	_sd = new SafeDelete(*_sd);
+	own = true;
+}
+
+//----------------------------------------------------------------------------
+// SafeDeleteLater
+//----------------------------------------------------------------------------
+SafeDeleteLater *SafeDeleteLater::self = 0;
+
+SafeDeleteLater *SafeDeleteLater::ensureExists()
+{
+	if(!self)
+		new SafeDeleteLater();
+	return self;
+}
+
+SafeDeleteLater::SafeDeleteLater()
+{
+	self = this;
+	QTimer::singleShot(0, this, SLOT(explode()));
+}
+
+SafeDeleteLater::~SafeDeleteLater()
+{
+	while (!list.isEmpty())
+		delete list.takeFirst();
+	self = 0;
+}
+
+void SafeDeleteLater::deleteItLater(QObject *o)
+{
+	list.append(o);
+}
+
+void SafeDeleteLater::explode()
+{
+	delete this;
+}

iris-legacy/cutestuff/legacy/safedelete.h

@@ -0,0 +1,60 @@
+#ifndef SAFEDELETE_H
+#define SAFEDELETE_H
+
+#include <qobject.h>
+#include <qobject.h>
+
+class SafeDelete;
+class SafeDeleteLock
+{
+public:
+	SafeDeleteLock(SafeDelete *sd);
+	~SafeDeleteLock();
+
+private:
+	SafeDelete *_sd;
+	bool own;
+	friend class SafeDelete;
+	void dying();
+};
+
+class SafeDelete
+{
+public:
+	SafeDelete();
+	~SafeDelete();
+
+	void deleteLater(QObject *o);
+
+	// same as QObject::deleteLater()
+	static void deleteSingle(QObject *o);
+
+private:
+	QObjectList list;
+	void deleteAll();
+
+	friend class SafeDeleteLock;
+	SafeDeleteLock *lock;
+	void unlock();
+};
+
+class SafeDeleteLater : public QObject
+{
+	Q_OBJECT
+public:
+	static SafeDeleteLater *ensureExists();
+	void deleteItLater(QObject *o);
+
+private slots:
+	void explode();
+
+private:
+	SafeDeleteLater();
+	~SafeDeleteLater();
+
+	QObjectList list;
+	friend class SafeDelete;
+	static SafeDeleteLater *self;
+};
+
+#endif

iris-legacy/cutestuff/legacy/servsock.cpp

@@ -0,0 +1,111 @@
+/*
+ * servsock.cpp - simple wrapper to QServerSocket
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "servsock.h"
+
+// CS_NAMESPACE_BEGIN
+
+//----------------------------------------------------------------------------
+// ServSock
+//----------------------------------------------------------------------------
+class ServSock::Private
+{
+public:
+	Private() {}
+
+	ServSockSignal *serv;
+};
+
+ServSock::ServSock(QObject *parent)
+:QObject(parent)
+{
+	d = new Private;
+	d->serv = 0;
+}
+
+ServSock::~ServSock()
+{
+	stop();
+	delete d;
+}
+
+bool ServSock::isActive() const
+{
+	return (d->serv ? true: false);
+}
+
+bool ServSock::listen(quint16 port)
+{
+	stop();
+
+	d->serv = new ServSockSignal(this);
+	if(!d->serv->listen(QHostAddress::Any, port)) {
+		delete d->serv;
+		d->serv = 0;
+		return false;
+	}
+	connect(d->serv, SIGNAL(connectionReady(int)), SLOT(sss_connectionReady(int)));
+
+	return true;
+}
+
+void ServSock::stop()
+{
+	delete d->serv;
+	d->serv = 0;
+}
+
+int ServSock::port() const
+{
+	if(d->serv)
+		return d->serv->serverPort();
+	else
+		return -1;
+}
+
+QHostAddress ServSock::address() const
+{
+	if(d->serv)
+		return d->serv->serverAddress();
+	else
+		return QHostAddress();
+}
+
+void ServSock::sss_connectionReady(int s)
+{
+	connectionReady(s);
+}
+
+
+//----------------------------------------------------------------------------
+// ServSockSignal
+//----------------------------------------------------------------------------
+ServSockSignal::ServSockSignal(QObject *parent)
+:QTcpServer(parent)
+{
+	setMaxPendingConnections(16);
+}
+
+void ServSockSignal::incomingConnection(int socketDescriptor)
+{
+	connectionReady(socketDescriptor);
+}
+
+// CS_NAMESPACE_END

iris-legacy/cutestuff/legacy/servsock.h

@@ -0,0 +1,68 @@
+/*
+ * servsock.h - simple wrapper to QServerSocket
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef CS_SERVSOCK_H
+#define CS_SERVSOCK_H
+
+#include <QTcpServer>
+
+// CS_NAMESPACE_BEGIN
+
+class ServSock : public QObject
+{
+	Q_OBJECT
+public:
+	ServSock(QObject *parent=0);
+	~ServSock();
+
+	bool isActive() const;
+	bool listen(quint16 port);
+	void stop();
+	int port() const;
+	QHostAddress address() const;
+
+signals:
+	void connectionReady(int);
+
+private slots:
+	void sss_connectionReady(int);
+
+private:
+	class Private;
+	Private *d;
+};
+
+class ServSockSignal : public QTcpServer
+{
+	Q_OBJECT
+public:
+	ServSockSignal(QObject *parent = 0);
+
+signals:
+	void connectionReady(int);
+
+protected:
+	// reimplemented
+	void incomingConnection(int socketDescriptor);
+};
+
+// CS_NAMESPACE_END
+
+#endif

iris-legacy/cutestuff/legacy/srvresolver.cpp

@@ -0,0 +1,313 @@
+/*
+ * srvresolver.cpp - class to simplify SRV lookups
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "srvresolver.h"
+
+#include <q3cstring.h>
+#include <qtimer.h>
+#include <q3dns.h>
+//Added by qt3to4:
+#include <QList>
+#include <QtAlgorithms>
+#include "safedelete.h"
+#include "psilogger.h"
+
+#ifndef NO_NDNS
+#include "ndns.h"
+#endif
+
+// CS_NAMESPACE_BEGIN
+
+bool serverLessThan(const Q3Dns::Server &s1, const Q3Dns::Server &s2)
+{
+	int a = s1.priority;
+	int b = s2.priority;
+	int j = s1.weight;
+	int k = s2.weight;
+	return a < b || (a == b && j < k);
+}
+
+static void sortSRVList(QList<Q3Dns::Server> &list)
+{
+	qStableSort(list.begin(), list.end(), serverLessThan);
+}
+
+class SrvResolver::Private
+{
+public:
+	Private() {}
+
+	Q3Dns *qdns;
+#ifndef NO_NDNS
+	NDns ndns;
+#endif
+
+	bool failed;
+	QHostAddress resultAddress;
+	Q_UINT16 resultPort;
+
+	bool srvonly;
+	QString srv;
+	QList<Q3Dns::Server> servers;
+	bool aaaa;
+
+	QTimer t;
+	SafeDelete sd;
+};
+
+SrvResolver::SrvResolver(QObject *parent)
+:QObject(parent)
+{
+	d = new Private;
+	d->qdns = 0;
+
+#ifndef NO_NDNS
+	connect(&d->ndns, SIGNAL(resultsReady()), SLOT(ndns_done()));
+#endif
+	connect(&d->t, SIGNAL(timeout()), SLOT(t_timeout()));
+	stop();
+}
+
+SrvResolver::~SrvResolver()
+{
+	stop();
+	delete d;
+}
+
+void SrvResolver::resolve(const QString &server, const QString &type, const QString &proto, bool srvOnly)
+{
+	PsiLogger::instance()->log(QString("SrvResolver::resolve(%1, %2, %3, %4)").arg(server).arg(type).arg(proto).arg(srvOnly));
+	stop();
+
+	d->failed = false;
+	d->srvonly = srvOnly;
+	d->srv = QString("_") + type + "._" + proto + '.' + server;
+	d->t.start(15000, true);
+	d->qdns = new Q3Dns;
+	connect(d->qdns, SIGNAL(resultsReady()), SLOT(qdns_done()));
+	d->qdns->setRecordType(Q3Dns::Srv);
+	d->qdns->setLabel(d->srv);
+}
+
+void SrvResolver::resolve(const QString &server, const QString &type, const QString &proto)
+{
+	resolve(server, type, proto, false);
+}
+
+void SrvResolver::resolveSrvOnly(const QString &server, const QString &type, const QString &proto)
+{
+	resolve(server, type, proto, true);
+}
+
+void SrvResolver::next()
+{
+	if(d->servers.isEmpty())
+		return;
+
+	tryNext();
+}
+
+void SrvResolver::stop()
+{
+	if(d->t.isActive())
+		d->t.stop();
+	if(d->qdns) {
+		d->qdns->disconnect(this);
+		d->sd.deleteLater(d->qdns);
+		d->qdns = 0;
+	}
+#ifndef NO_NDNS
+	if(d->ndns.isBusy())
+		d->ndns.stop();
+#endif
+	d->resultAddress = QHostAddress();
+	d->resultPort = 0;
+	d->servers.clear();
+	d->srv = "";
+	d->failed = true;
+}
+
+bool SrvResolver::isBusy() const
+{
+#ifndef NO_NDNS
+	if(d->qdns || d->ndns.isBusy())
+#else
+	if(d->qdns)
+#endif
+		return true;
+	else
+		return false;
+}
+
+QList<Q3Dns::Server> SrvResolver::servers() const
+{
+	return d->servers;
+}
+
+bool SrvResolver::failed() const
+{
+	return d->failed;
+}
+
+QHostAddress SrvResolver::resultAddress() const
+{
+	return d->resultAddress;
+}
+
+Q_UINT16 SrvResolver::resultPort() const
+{
+	return d->resultPort;
+}
+
+void SrvResolver::tryNext()
+{
+#ifndef NO_NDNS
+	PsiLogger::instance()->log(QString("SrvResolver(%1)::tryNext() d->ndns.resolve(%2)").arg(d->srv).arg(d->servers.first().name));
+	d->ndns.resolve(d->servers.first().name);
+#else
+	d->qdns = new Q3Dns;
+	connect(d->qdns, SIGNAL(resultsReady()), SLOT(ndns_done()));
+	if(d->aaaa)
+		d->qdns->setRecordType(Q3Dns::Aaaa); // IPv6
+	else
+		d->qdns->setRecordType(Q3Dns::A); // IPv4
+	d->qdns->setLabel(d->servers.first().name);
+#endif
+}
+
+void SrvResolver::qdns_done()
+{
+	PsiLogger::instance()->log(QString("SrvResolver(%1)::qdns_done() d->qdns = %2; d->qdns->isWorking() = %3; d->qdns->servers().count() = %4").arg(d->srv).arg((long)d->qdns).arg(d->qdns ? d->qdns->isWorking() : 0).arg(d->qdns ? d->qdns->servers().count() : 0));
+	if(!d->qdns)
+		return;
+
+	// apparently we sometimes get this signal even though the results aren't ready
+	if(d->qdns->isWorking())
+		return;
+	d->t.stop();
+
+	SafeDeleteLock s(&d->sd);
+
+	// grab the server list and destroy the qdns object
+	QList<Q3Dns::Server> list;
+	if(d->qdns->recordType() == Q3Dns::Srv)
+		list = d->qdns->servers();
+	d->qdns->disconnect(this);
+	d->sd.deleteLater(d->qdns);
+	d->qdns = 0;
+
+	if(list.isEmpty()) {
+		stop();
+		resultsReady();
+		return;
+	}
+	sortSRVList(list);
+	d->servers = list;
+
+	if(d->srvonly)
+		resultsReady();
+	else {
+		// kick it off
+		d->aaaa = true;
+		tryNext();
+	}
+}
+
+void SrvResolver::ndns_done()
+{
+#ifndef NO_NDNS
+	SafeDeleteLock s(&d->sd);
+
+	QHostAddress r = d->ndns.result();
+	int port = d->servers.first().port;
+	d->servers.remove(d->servers.begin());
+
+	PsiLogger::instance()->log(QString("SrvResolver(%1)::ndns_done() r.isNull = %2, r = %3, port = %4").arg(d->srv).arg(r.isNull()).arg(r.toString()).arg(port));
+
+	if(!r.isNull()) {
+		d->resultAddress = r;
+		d->resultPort = port;
+		resultsReady();
+	}
+	else {
+		// failed?  bail if last one
+		if(d->servers.isEmpty()) {
+			stop();
+			resultsReady();
+			return;
+		}
+
+		// otherwise try the next
+		tryNext();
+	}
+#else
+	if(!d->qdns)
+		return;
+
+	// apparently we sometimes get this signal even though the results aren't ready
+	if(d->qdns->isWorking())
+		return;
+
+	SafeDeleteLock s(&d->sd);
+
+	// grab the address list and destroy the qdns object
+	QList<QHostAddress> list;
+	if(d->qdns->recordType() == Q3Dns::A || d->qdns->recordType() == Q3Dns::Aaaa)
+		list = d->qdns->addresses();
+	d->qdns->disconnect(this);
+	d->sd.deleteLater(d->qdns);
+	d->qdns = 0;
+
+	if(!list.isEmpty()) {
+		int port = d->servers.first().port;
+		d->servers.remove(d->servers.begin());
+		d->aaaa = true;
+
+		d->resultAddress = list.first();
+		d->resultPort = port;
+		resultsReady();
+	}
+	else {
+		if(!d->aaaa)
+			d->servers.remove(d->servers.begin());
+		d->aaaa = !d->aaaa;
+
+		// failed?  bail if last one
+		if(d->servers.isEmpty()) {
+			stop();
+			resultsReady();
+			return;
+		}
+
+		// otherwise try the next
+		tryNext();
+	}
+#endif
+}
+
+void SrvResolver::t_timeout()
+{
+	SafeDeleteLock s(&d->sd);
+
+	stop();
+	resultsReady();
+}
+
+// CS_NAMESPACE_END

iris-legacy/cutestuff/legacy/srvresolver.h

@@ -0,0 +1,66 @@
+/*
+ * srvresolver.h - class to simplify SRV lookups
+ * Copyright (C) 2003  Justin Karneges
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef CS_SRVRESOLVER_H
+#define CS_SRVRESOLVER_H
+
+#include <QList>
+#include <q3dns.h>
+
+// CS_NAMESPACE_BEGIN
+
+class SrvResolver : public QObject
+{
+	Q_OBJECT
+public:
+	SrvResolver(QObject *parent=0);
+	~SrvResolver();
+
+	void resolve(const QString &server, const QString &type, const QString &proto);
+	void resolveSrvOnly(const QString &server, const QString &type, const QString &proto);
+	void next();
+	void stop();
+	bool isBusy() const;
+
+	QList<Q3Dns::Server> servers() const;
+
+	bool failed() const;
+	QHostAddress resultAddress() const;
+	Q_UINT16 resultPort() const;
+
+signals:
+	void resultsReady();
+
+private slots:
+	void qdns_done();
+	void ndns_done();
+	void t_timeout();
+
+private:
+	class Private;
+	Private *d;
+
+	void tryNext();
+	void resolve(const QString &server, const QString &type, const QString &proto, bool srvOnly);
+};
+
+// CS_NAMESPACE_END
+
+#endif