bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
{
if (addr.family() != type)
return false;
irc::sockets::cidr_mask tmp(addr, length);
return tmp == *this;
}
static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, unsigned char range)
{
const unsigned char* base;
unsigned char target_byte;
memset(cidr.bits, 0, sizeof(cidr.bits));
cidr.type = sa.family();
switch (cidr.type)
{
case AF_UNIX:
// XXX: UNIX sockets don't support CIDR. This fix is non-ideal but I can't
// really think of another way to handle it.
cidr.length = 0;
return;
case AF_INET:
cidr.length = range > 32 ? 32 : range;
target_byte = sizeof(sa.in4.sin_addr);
base = (unsigned char*)&sa.in4.sin_addr;
break;
case AF_INET6:
cidr.length = range > 128 ? 128 : range;
target_byte = sizeof(sa.in6.sin6_addr);
base = (unsigned char*)&sa.in6.sin6_addr;
break;
default:
// If we have reached this point then we have encountered a bug.
ServerInstance->Logs.Log("SOCKET", LOG_DEBUG, "BUG: sa2cidr(): socket type %d is unknown!", cidr.type);
cidr.length = 0;
return;
}
unsigned int border = cidr.length / 8;
unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
for(unsigned int i=0; i < target_byte; i++)
{
if (i < border)
cidr.bits[i] = base[i];
else if (i == border)
cidr.bits[i] = base[i] & bitmask;
else
return;
}
}
bool irc::sockets::sockaddrs::operator==(const irc::sockets::sockaddrs& other) const
{
if (family() != other.family())
return false;
switch (family())
{
case AF_INET:
return (in4.sin_port == other.in4.sin_port) && (in4.sin_addr.s_addr == other.in4.sin_addr.s_addr);
case AF_INET6:
return (in6.sin6_port == other.in6.sin6_port) && !memcmp(in6.sin6_addr.s6_addr, other.in6.sin6_addr.s6_addr, 16);
case AF_UNIX:
return !strcmp(un.sun_path, other.un.sun_path);
}
// If we have reached this point then we have encountered a bug.
ServerInstance->Logs.Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::sockaddrs::operator==(): socket type %d is unknown!", family());
return !memcmp(this, &other, sizeof(*this));
}