123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/*
|
|
Copyright (C) 2010 Srivats P.
|
|
|
|
This file is part of "Ostinato"
|
|
|
|
This 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>
|
|
*/
|
|
|
|
#ifndef _IP_UTILS_H
|
|
#define _IP_UTILS_H
|
|
|
|
namespace ipUtils {
|
|
enum AddrMode {
|
|
kFixed = 0,
|
|
kIncrement = 1,
|
|
kDecrement = 2,
|
|
kRandom = 3
|
|
};
|
|
|
|
quint32 inline ipAddress(quint32 baseIp, int prefix, AddrMode mode, int count,
|
|
int index)
|
|
{
|
|
int u;
|
|
quint32 mask = ((1<<prefix) - 1) << (32 - prefix);
|
|
quint32 subnet, host, ip;
|
|
|
|
switch(mode)
|
|
{
|
|
case kFixed:
|
|
ip = baseIp;
|
|
break;
|
|
case kIncrement:
|
|
u = index % count;
|
|
subnet = baseIp & mask;
|
|
host = (((baseIp & ~mask) + u) &
|
|
~mask);
|
|
ip = subnet | host;
|
|
break;
|
|
case kDecrement:
|
|
u = index % count;
|
|
subnet = baseIp & mask;
|
|
host = (((baseIp & ~mask) - u) &
|
|
~mask);
|
|
ip = subnet | host;
|
|
break;
|
|
case kRandom:
|
|
subnet = baseIp & mask;
|
|
host = (qrand() & ~mask);
|
|
ip = subnet | host;
|
|
break;
|
|
default:
|
|
ip = 0;
|
|
qWarning("Unhandled mode = %d", mode);
|
|
}
|
|
|
|
return ip;
|
|
}
|
|
|
|
void inline ipAddress(quint64 baseIpHi, quint64 baseIpLo, int prefix,
|
|
AddrMode mode, int count, int index, quint64 &ipHi, quint64 &ipLo)
|
|
{
|
|
int u, p, q;
|
|
quint64 maskHi = 0, maskLo = 0;
|
|
quint64 prefixHi, prefixLo;
|
|
quint64 hostHi = 0, hostLo = 0;
|
|
|
|
switch(mode)
|
|
{
|
|
case kFixed:
|
|
ipHi = baseIpHi;
|
|
ipLo = baseIpLo;
|
|
break;
|
|
case kIncrement:
|
|
case kDecrement:
|
|
case kRandom:
|
|
u = index % count;
|
|
if (prefix > 64) {
|
|
p = 64;
|
|
q = prefix - 64;
|
|
} else {
|
|
p = prefix;
|
|
q = 0;
|
|
}
|
|
if (p > 0)
|
|
maskHi = ~((quint64(1) << p) - 1);
|
|
if (q > 0)
|
|
maskLo = ~((quint64(1) << q) - 1);
|
|
prefixHi = baseIpHi & maskHi;
|
|
prefixLo = baseIpLo & maskLo;
|
|
if (mode == kIncrement) {
|
|
hostHi = ((baseIpHi & ~maskHi) + 0) & ~maskHi;
|
|
hostLo = ((baseIpLo & ~maskLo) + u) & ~maskLo;
|
|
}
|
|
else if (mode == kDecrement) {
|
|
hostHi = ((baseIpHi & ~maskHi) - 0) & ~maskHi;
|
|
hostLo = ((baseIpLo & ~maskLo) - u) & ~maskLo;
|
|
}
|
|
else if (mode==kRandom) {
|
|
hostHi = qrand() & ~maskHi;
|
|
hostLo = qrand() & ~maskLo;
|
|
}
|
|
ipHi = prefixHi | hostHi;
|
|
ipLo = prefixLo | hostLo;
|
|
break;
|
|
default:
|
|
qWarning("Unhandled mode = %d", mode);
|
|
}
|
|
}
|
|
|
|
} // namespace ipUtils
|
|
#endif
|