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Change IP structure so that IPv4 addresses are stored in RFC3493 format

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In addition to saving 4 bytes for each instantiation, this change makes IP-related operations faster and clearer.

https://tools.ietf.org/html/rfc3493.html#section-3.7
This commit is contained in:
Davide Beatrici
2021-04-07 21:24:55 +02:00
parent 01663f836d
commit 1708998a11
21 changed files with 295 additions and 403 deletions
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24
src/Cedar/Proto_IKE.c
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@ -143,8 +143,8 @@ void IPsecSendPacketByIPsecSa(IKE_SERVER *ike, IPSECSA *sa, UCHAR *data, UINT da
h.PayloadLength = Endian16(data_size);
h.NextHeader = protocol_id;
h.HopLimit = 64;
Copy(h.SrcAddress.Value, c->TunnelModeServerIP.ipv6_addr, 16);
Copy(h.DestAddress.Value, c->TunnelModeClientIP.ipv6_addr, 16);
Copy(h.SrcAddress.Value, c->TunnelModeServerIP.address, sizeof(h.SrcAddress.Value));
Copy(h.DestAddress.Value, c->TunnelModeClientIP.address, sizeof(h.DestAddress.Value));
WriteBuf(b, &h, sizeof(IPV6_HEADER));
@ -359,16 +359,16 @@ void IPsecSendUdpPacket(IKE_SERVER *ike, IKE_CLIENT *c, UINT src_port, UINT dst_
{
if (IsIPsecSaTunnelMode(c->CurrentIpSecSaSend) == false)
{
u->Checksum = CalcChecksumForIPv6((IPV6_ADDR *)c->TransportModeServerIP.ipv6_addr,
(IPV6_ADDR *)c->TransportModeClientIP.ipv6_addr,
u->Checksum = CalcChecksumForIPv6((IPV6_ADDR *)c->TransportModeServerIP.address,
(IPV6_ADDR *)c->TransportModeClientIP.address,
IP_PROTO_UDP,
u,
udp_size, 0);
}
else
{
u->Checksum = CalcChecksumForIPv6((IPV6_ADDR *)c->TunnelModeServerIP.ipv6_addr,
(IPV6_ADDR *)c->TunnelModeClientIP.ipv6_addr,
u->Checksum = CalcChecksumForIPv6((IPV6_ADDR *)c->TunnelModeServerIP.address,
(IPV6_ADDR *)c->TunnelModeClientIP.address,
IP_PROTO_UDP,
u,
udp_size, 0);
@ -2907,12 +2907,12 @@ void ProcIkeAggressiveModePacketRecv(IKE_SERVER *ike, UDPPACKET *p, IKE_PACKET *
if (IsIP6(&sa->IkeClient->ServerIP))
{
// IPv6 address
my_id_payload = IkeNewIdPayload(IKE_ID_IPV6_ADDR, 0, 0, sa->IkeClient->ServerIP.ipv6_addr, 16);
my_id_payload = IkeNewIdPayload(IKE_ID_IPV6_ADDR, 0, 0, sa->IkeClient->ServerIP.address, 16);
}
else
{
// IPv4 address
my_id_payload = IkeNewIdPayload(IKE_ID_IPV4_ADDR, 0, 0, sa->IkeClient->ServerIP.addr, 4);
my_id_payload = IkeNewIdPayload(IKE_ID_IPV4_ADDR, 0, 0, IPV4(sa->IkeClient->ServerIP.address), IPV4_SIZE);
}
// Build the ID payload tentatively
@ -3411,12 +3411,12 @@ void ProcIkeMainModePacketRecv(IKE_SERVER *ike, UDPPACKET *p, IKE_PACKET *header
if (IsIP6(&sa->IkeClient->ServerIP))
{
// IPv6 address
my_id_payload = IkeNewIdPayload(IKE_ID_IPV6_ADDR, 0, 0, sa->IkeClient->ServerIP.ipv6_addr, 16);
my_id_payload = IkeNewIdPayload(IKE_ID_IPV6_ADDR, 0, 0, sa->IkeClient->ServerIP.address, 16);
}
else
{
// IPv4 address
my_id_payload = IkeNewIdPayload(IKE_ID_IPV4_ADDR, 0, 0, sa->IkeClient->ServerIP.addr, 4);
my_id_payload = IkeNewIdPayload(IKE_ID_IPV4_ADDR, 0, 0, IPV4(sa->IkeClient->ServerIP.address), IPV4_SIZE);
}
// Build the ID payload tentatively
@ -3687,11 +3687,11 @@ BUF *IkeCalcNatDetectHash(IKE_SERVER *ike, IKE_HASH *hash, UINT64 initiator_cook
if (IsIP6(ip))
{
WriteBuf(b, ip->ipv6_addr, sizeof(ip->ipv6_addr));
WriteBuf(b, ip->address, sizeof(ip->address));
}
else
{
WriteBuf(b, ip->addr, sizeof(ip->addr));
WriteBuf(b, IPV4(ip->address), IPV4_SIZE);
}
us = Endian16((USHORT)port);