qcp/libqtavahi/qtavahi.h

#ifndef QTAVAHI_H
#define QTAVAHI_H

#include <QObject>

#include "libqtavahi_global.h"

namespace Avahi {
	class LIBQTAVAHISHARED_EXPORT Service;
	class LIBQTAVAHISHARED_EXPORT ServiceKey;
	class LIBQTAVAHISHARED_EXPORT Browse;
	class LIBQTAVAHISHARED_EXPORT Announce;
}

/* we need this before #include <QHash> so it finds our qHash function */
inline uint qHash(const Avahi::ServiceKey& k);

#include <QHostAddress>
#include <QAbstractItemModel>
#include <QAtomicInt>
#include <QString>
#include <QHash>

#include "qtavahi_p.h"

namespace Avahi {
	typedef Avahi::priv::ServiceWatch ServiceWatch;

	class LIBQTAVAHISHARED_EXPORT Service {
	public:
		inline Service() : m_priv(0) { }
		inline Service(QString name, QString hostname, QString domain, QHostAddress address, int interface, int protocol, quint16 port, QHash<QString, QString> txt)
			: m_priv(new Avahi::priv::ServiceP(name, hostname, domain, address, interface, protocol, port, txt)) { }

		inline Service(const Service &s) : m_priv(0) { assign(s.m_priv); }
		inline Service &operator=(const Service &s) { assign(s.m_priv); return *this; }

		~Service() { assign(0); }

		inline QString name() const { return m_priv ? m_priv->m_name : QString(); }
		inline QString hostname() const { return m_priv ? m_priv->m_hostname : QString(); }
		inline QString domain() const { return m_priv ? m_priv->m_domain : QString(); }
		inline QHostAddress address() const { return m_priv ? m_priv->m_address : QHostAddress(); }
		inline quint16 port() const { return m_priv ? m_priv->m_port : 0; }
		inline QHash<QString, QString> txt() const { return m_priv ? m_priv->m_txt : QHash<QString, QString>(); }
		inline QString txt(QString key) const { return m_priv ? m_priv->m_txt.value(key) : QString(); }
		inline bool valid() const { return 0 != m_priv; }

		/* save custom data for a service (the service is probably associated with a Browse instance, so all
		   code using the same Browse instance uses the same private data here */
		inline void* data() const { return m_priv ? m_priv->m_data : 0; }
		inline void setData(void *data) const { if (m_priv) m_priv->m_data = data; }

		inline Avahi::ServiceWatch* watcher() const { return m_priv ? m_priv->watcher() : 0; }

	private:
		friend class Avahi::ServiceKey;
		friend class Avahi::Browse;

		inline void assign(Avahi::priv::ServiceP *p) {
			if (p == m_priv) return;
			if (p) p->ref();
			if (m_priv) m_priv->deref();
			m_priv = p;
		}

		Avahi::priv::ServiceP *m_priv;
	};

	class LIBQTAVAHISHARED_EXPORT ServiceKey {
	public:
		inline ServiceKey(int interface, int protocol, const char *name, const char *domain)
			: interface(interface), protocol(protocol), name(QString::fromUtf8(name)), domain(QString::fromUtf8(domain)) {
		}
		inline ServiceKey(int interface, int protocol, QString name, QString domain)
			: interface(interface), protocol(protocol), name(name), domain(domain) {
		}
		inline ServiceKey(const Service &s)
			: interface(-1), protocol(-1), name(), domain() {
			if (s.m_priv) {
				interface = s.m_priv->m_interface;
				protocol = s.m_priv->m_protocol;
				name = s.m_priv->m_name;
				domain = s.m_priv->m_domain;
				txt = s.m_priv->m_txt;
			}
		}

		int interface; /* AvahiIfIndex */
		int protocol; /* AvahiProtocol */
		QString name;
		QString domain;
		QHash<QString, QString> txt; /* not included in comparisons and hashing, informational only */
	};

	inline bool operator==(const ServiceKey &a, const ServiceKey &b) {
		return a.interface == b.interface && a.protocol == b.protocol && a.name == b.name && a.domain == b.domain;
	}
	inline bool operator<(const ServiceKey &a, const ServiceKey &b) {
		if (a.interface < b.interface) return true;
		if (a.interface > b.interface) return false;
		if (a.protocol < b.protocol) return true;
		if (a.protocol > b.protocol) return false;
		if (a.name < b.name) return true;
		if (a.name > b.name) return false;
		return a.domain < b.domain;
	}
	inline bool operator>(const ServiceKey &a, const ServiceKey &b) { return b < a; }
	inline bool operator<=(const ServiceKey &a, const ServiceKey &b) { return !(b < a); }
	inline bool operator>=(const ServiceKey &a, const ServiceKey &b) { return !(a < b); }



	class LIBQTAVAHISHARED_EXPORT Browse : public QObject {
		Q_OBJECT
	private:
		Q_DISABLE_COPY(Browse);

	public:
		typedef Avahi::priv::Protocol Protocol;
		inline Browse(QString servtype, Protocol prot, QObject *parent = 0) {
			Browse(Avahi::priv::serv_prot2str(servtype, prot), parent);
		}
		Browse(QString serviceType, QObject *parent = 0);
		virtual ~Browse();

		bool start();
		void stop();

		QString serviceType() const;

		QList<Service> currentList() const;

	private:
		void clearList();

		void foundService(Avahi::Service s);
		void lostService(Avahi::Service s);

	signals:
		void found(Avahi::Service s);
		void lost(Avahi::Service s);

		void started();
		void stopped();

	private:
		Avahi::priv::BrowseP *m_priv;

		friend class Avahi::priv::BrowseP;
	};

	class LIBQTAVAHISHARED_EXPORT Announce : public QObject {
		Q_OBJECT
	private:
		Q_DISABLE_COPY(Announce);

	public:
		typedef Avahi::priv::Protocol Protocol;
		inline Announce(QString servtype, Protocol prot, QString name, quint16 port, QHash<QString,QString> txt, QObject *parent = 0) {
			Announce(Avahi::priv::serv_prot2str(servtype, prot), name, port, txt, parent);
		}
		Announce(QString serviceType, QString name, quint16 port, QHash<QString,QString> txt, QObject *parent = 0);
		virtual ~Announce();

		QString serviceType() const;
		QString name() const;
		quint16 port() const;
		QHash<QString, QString> txt() const;
		QString txt(QString key) const;

		bool start();
		void stop();

	signals:
		void established(); /* the name may have been changed after collisions */
		void collision();
		void started();
		void stopped();

	private:
		Avahi::priv::AnnounceP *m_priv;

		friend class Avahi::priv::AnnounceP;
	};

}

Q_DECLARE_METATYPE(Avahi::Service);
Q_DECLARE_METATYPE(QList<Avahi::Service>);

QT_BEGIN_NAMESPACE
inline uint qHash(const Avahi::ServiceKey& k) {
	return qHash(k.interface ^ k.protocol) ^ qHash(k.name) ^ qHash(k.domain);
}
QT_END_NAMESPACE

#endif // QTAVAHI_H