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+/***************************************************************************
+ kaddressvalidator.h - description
+ -------------------
+ begin : Wed Jan 22 2003
+ copyright : (C) 2003 by Juan Luis Baptiste
+ email : jbaptiste@merlinux.org
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ ***************************************************************************/
+
+#ifndef KADDRESSVALIDATOR_H
+#define KADDRESSVALIDATOR_H
+
+/*
+ Class for validating IP address and netmasks, and to calculate network and broadcast values.
+ The functions to do the last two things where taken from the code of ipcalc.c, made by
+ Erik Troan <ewt@redhat.com> and Preston Brown <pbrown@redhat.com> from Red Hat Inc.
+*/
+
+
+
+/*!
+ \def IPBITS
+ \brief the number of bits in an IP address.
+*/
+#define IPBITS (sizeof(TQ_UINT32) * 8)
+/*!
+ \def IPBYTES
+ \brief the number of bytes in an IP address.
+*/
+#define IPBYTES (sizeof(TQ_UINT32))
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <tqstring.h>
+
+/**Class that has simple methods for validating IP addresses, netmasks, calculating
+ broadcast and network addresses.
+
+ *@author Juan Luis Baptiste
+ */
+
+class KAddressValidator {
+public:
+ KAddressValidator();
+ ~KAddressValidator();
+ /** Validates if the address written by the user is a valid one. Return true if it is and false if not. */
+ static bool isValidIPAddress(TQString addr);
+ /** Validates if the Netmask written by the user is a valid one. Return true if it is and false if not. */
+ static bool isNetmaskValid(TQString addr);
+/** Validates if the Network written by the user is a valid one. Return true if it is and false if not. */
+ static bool isNetworkValid(const TQString &addr);
+/** Validates if the Broadcast written by the user is a valid one. Return true if it is and false if not. */
+ static bool isBroadcastValid(TQString addr);
+
+ /** Is a wrapper function to calc_network that receives the IP address and netsmask as TQString and
+ returns the network value also as a TQString, or NULL if it couldn't be calculated. */
+ static TQString calculateNetwork(TQString addr,TQString netmask);
+/** Is a wrapper function to calc_broadcast that receives the IP address and netsmask as TQString and
+returns the broadcast value also as a TQString, or NULL if it couldn't be calculated. */
+ static TQString calculateBroadcast(TQString addr, TQString netmask);
+
+private: // Private methods
+/** \fn unsigned long int calc_broadcast(unsigned long int addr, int prefix)
+
+ \brief calculate broadcast address given an IP address and a prefix length.
+
+ \param addr an IP address in network byte order.
+ \param prefix a prefix length.
+
+ \return the calculated broadcast address for the network, in network byte
+ order. */
+ static unsigned long int calc_broadcast(unsigned long int addr, int prefix);
+ /** \fn unsigned long int calc_network(unsigned long int addr, int prefix)
+ \brief calculates the network address for a specified address and prefix.
+
+ \param addr an IP address, in network byte order
+ \param prefix the network prefix
+ \return the base address of the network that addr is associated with, in
+ network byte order. */
+ static unsigned long int calc_network(unsigned long int addr, int prefix);
+ /** \fn unsigned long int prefix2mask(int bits)
+ \brief creates a netmask from a specified number of bits
+
+ This function converts a prefix length to a netmask. As CIDR (classless
+ internet domain internet domain routing) has taken off, more an more IP
+ addresses are being specified in the format address/prefix
+ (i.e. 192.168.2.3/24, with a corresponding netmask 255.255.255.0). If you
+ need to see what netmask corresponds to the prefix part of the address, this
+ is the function. See also \ref mask2prefix.
+
+ \param prefix is the number of bits to create a mask for.
+ \return a network mask, in network byte order.
+ */
+ static unsigned long int prefix2mask(int prefix);
+ /** \fn int mask2prefix(unsigned long int mask)
+ \brief calculates the number of bits masked off by a netmask.
+
+ This function calculates the significant bits in an IP address as specified by
+ a netmask. See also \ref prefix2mask.
+
+ \param mask is the netmask, specified as an unsigned long integer in network byte order.
+ \return the number of significant bits. */
+ static int mask2prefix(unsigned long int mask);
+};
+
+#endif