// Get the self IP address
UINT DCGetMyIp(DDNS_CLIENT *c, bool ipv6, char *dst, UINT dst_size, char *replace_v6)
{
UINT ret = ERR_INTERNAL_ERROR;
ret = DCGetMyIpMain(c, ipv6, dst, dst_size, false, replace_v6);
if (ret == ERR_NO_ERROR)
{
IP ip;
if (StrToIP(&ip, dst))
{
if (ipv6 == false && IsIP4(&ip))
{
SetCurrentGlobalIP(&ip, false);
}
else if (ipv6 && IsIP6(&ip))
{
SetCurrentGlobalIP(&ip, true);
}
}
}
return ret;
}
// Update the IP address list of the host
void IPsecWin7UpdateHostIPAddressList(IPSEC_WIN7 *w)
{
LIST *o;
UINT i;
BUF *buf;
UINT retsize;
// Validate arguments
if (w == NULL)
{
return;
}
o = GetHostIPAddressList();
if (o == NULL)
{
return;
}
buf = NewBuf();
for (i = 0;i < LIST_NUM(o);i++)
{
IP *ip = LIST_DATA(o, i);
WFP_LOCAL_IP a;
Zero(&a, sizeof(a));
// Exclude any IPs or localhost IP
if (IsZeroIP(ip) == false && IsLocalHostIP(ip) == false)
{
if (IsIP4(ip))
{
a.IpVersion = 4;
Copy(a.IpAddress.IPv4Address, ip->addr, 4);
}
else
{
a.IpVersion = 6;
Copy(a.IpAddress.IPv6Address, ip->ipv6_addr, 16);
}
WriteBuf(buf, &a, sizeof(WFP_LOCAL_IP));
}
}
if (WriteFile(w->hDriverFile, buf->Buf, buf->Size, &retsize, NULL) == false)
{
Debug("WriteFile to the driver failed. %u\n", GetLastError());
}
FreeHostIPAddressList(o);
FreeBuf(buf);
}
// Calculate the proper TCP MSS in EtherIP communication
UINT CalcEtherIPTcpMss(ETHERIP_SERVER *s)
{
UINT ret = MTU_FOR_PPPOE;
// Validate arguments
if (s == NULL)
{
return 0;
}
// IPv4 / IPv6
if (IsIP4(&s->ClientIP))
{
ret -= 20;
}
else
{
ret -= 40;
}
// IPsec UDP
ret -= 8;
// IPsec ESP
ret -= 20;
ret -= s->CryptBlockSize * 2;
// IPsec Tunnel Mode IPv4 / IPv6 Header
if (s->IsTunnelMode)
{
if (IsIP4(&s->ClientIP))
{
ret -= 20;
}
else
{
ret -= 40;
}
}
if (s->L2TPv3 == false)
{
// EtherIP
ret -= 2;
}
else
{
// L2TPv3
ret -= 2;
}
// Ethernet
ret -= 14;
// IPv4
ret -= 20;
// TCP
ret -= 20;
return ret;
}
