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/* tqdbusunixfd.cpp DBUS unix file handle data type
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*
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* Copyright (C) 2013 Slávek Banko <slavek.banko@axis.cz>
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*
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* Licensed under the Academic Free License version 2.1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*/
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#include <unistd.h>
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#include "tqdbusunixfd.h"
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TQT_DBusUnixFd::TQT_DBusUnixFd() : d(new TQT_DBusUnixFdPrivate())
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{
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d->ref();
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d->fd = -1;
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};
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TQT_DBusUnixFd::TQT_DBusUnixFd(const TQT_DBusUnixFd& other) : d(other.d)
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{
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d->ref();
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}
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TQT_DBusUnixFd::TQT_DBusUnixFd(int other)
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{
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setFileDescriptor(other);
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}
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TQT_DBusUnixFd::~TQT_DBusUnixFd()
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{
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if (d && d->deref() ) {
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if ( isValid() ) {
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close(d->fd);
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}
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delete d;
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}
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}
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bool TQT_DBusUnixFd::isValid() const
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{
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return d ? d->fd != -1 : false;
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}
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int TQT_DBusUnixFd::fileDescriptor() const
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{
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return d ? d->fd : -1;
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}
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void TQT_DBusUnixFd::setFileDescriptor(int fileDescriptor)
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{
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giveFileDescriptor(fileDescriptor != -1 ? dup(fileDescriptor) : -1);
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}
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void TQT_DBusUnixFd::giveFileDescriptor(int fileDescriptor)
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{
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if ( d && d->deref() ) {
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if ( isValid() ) {
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close(d->fd);
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}
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}
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else {
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d = new TQT_DBusUnixFdPrivate;
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}
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d->ref();
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d->fd = fileDescriptor;
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}
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TQT_DBusUnixFd &TQT_DBusUnixFd::operator=( const TQT_DBusUnixFd &other )
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{
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if (other.d) {
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other.d->ref();
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}
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if ( d && d->deref() ) {
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if ( isValid() ) {
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close(d->fd);
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}
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delete d;
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}
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d = other.d;
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return *this;
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}
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@ -0,0 +1,149 @@
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/* tqdbusunixfd.h DBUS unix file handle data type
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*
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* Copyright (C) 2013 Slávek Banko <slavek.banko@axis.cz>
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*
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* Licensed under the Academic Free License version 2.1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*/
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#ifndef TQDBUSUNIXFD_H
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#define TQDBUSUNIXFD_H
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#include "dbus/dbus.h"
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#ifndef QT_H
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#include "ntqshared.h"
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#endif // QT_H
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#ifndef DBUS_TYPE_UNIX_FD
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#define DBUS_TYPE_UNIX_FD ((int) 'h')
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#endif
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#ifndef DBUS_TYPE_UNIX_FD_AS_STRING
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#define DBUS_TYPE_UNIX_FD_AS_STRING "h"
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#endif
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/**
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* @brief Class for representing D-Bus unix file handles
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*
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* This data type is necessary to correctly represent unix file handles in the
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* context of D-Bus messages, since normal strings have a different D-Bus
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* signature than unix file handles.
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*
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* @see @ref dbusconventions-unixfd
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*/
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class TQT_DBusUnixFd
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{
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public:
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/**
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* @brief Creates an empty and invalid unix file handle
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*/
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TQT_DBusUnixFd();
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/**
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* @brief Creates copy of the given @p other unix file handle
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*
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* @param other the unix file handle to copy
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*/
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TQT_DBusUnixFd(const TQT_DBusUnixFd& other);
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/**
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* @brief Creates copy of the given @p other unix file handle
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*
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* @param other the unix file handle to copy
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*/
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TQT_DBusUnixFd(int other);
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/**
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* @brief Destroys the unix file handle
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*/
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virtual ~TQT_DBusUnixFd();
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/**
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* @brief Returns whether the current content is considered a valid unix file handle
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*
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* @return \c true if the object's content describe a valid unix file handle,
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* otherwise @c false
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*
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* @see @ref dbusconventions-unixfd
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*/
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bool isValid() const;
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/**
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* @brief Get unix file handle
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*
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* @see @ref dbusconventions-unixfd
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*/
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int fileDescriptor() const;
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/**
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* @brief Set new unix file handle
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*
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* @see @ref dbusconventions-unixfd
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*/
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void setFileDescriptor(int fileDescriptor);
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/**
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* @brief Give unix file handle
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*
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* @see @ref dbusconventions-unixfd
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*/
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void giveFileDescriptor(int fileDescriptor);
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/**
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* @brief Copy unix file handle from TQT_DBusUnixFd
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*
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* @see @ref dbusconventions-unixfd
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*/
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TQT_DBusUnixFd &operator=( const TQT_DBusUnixFd &other );
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/**
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* @brief Checks if the given @p other variant is equal to this one
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*
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* @param other unix file handle to compare with
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*
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* @return @c true if both use same file handle, otherwise
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* @c false
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*/
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inline bool operator==(const TQT_DBusUnixFd& other) const
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{
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return (&other == this) || (other.d == d);
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}
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/**
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* @brief Checks if the given @p other variant is not equal to this one
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*
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* @param other unix file handle to compare with
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*
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* @return @c true if both use different file handle, otherwise
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* @c false
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*/
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inline bool operator!=(const TQT_DBusUnixFd& other) const
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{
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return (&other != this) && (other.d != d);
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}
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protected:
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struct TQT_DBusUnixFdPrivate : public TQShared {
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int fd;
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} *d;
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};
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#endif
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