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Merge 6227919bc2 into 74f7269ef6

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hiura2023 2024-04-26 06:40:04 +00:00 committed by GitHub
commit 18d38779fd
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1 changed files with 31 additions and 27 deletions
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58
src/Cedar/Virtual.c
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@ -9710,36 +9710,40 @@ void VirtualDhcpServer(VH *v, PKT *p)
} }
else else
{ {
// There is no IP address that can be provided // Reply of DHCP_REQUEST must be either DHCP_ACK or DHCP_NAK.
DHCP_OPTION_LIST ret; if (opt->Opcode == DHCP_REQUEST)
LIST *o;
Zero(&ret, sizeof(ret));
ret.Opcode = DHCP_NACK;
ret.ServerAddress = v->HostIP;
StrCpy(ret.DomainName, sizeof(ret.DomainName), v->DhcpDomain);
ret.SubnetMask = v->DhcpMask;
// Build the DHCP option
o = BuildDhcpOption(&ret);
if (o != NULL)
{ {
BUF *b = BuildDhcpOptionsBuf(o); // There is no IP address that can be provided
if (b != NULL) DHCP_OPTION_LIST ret;
{ LIST *o;
UINT dest_ip = p->L3.IPv4Header->SrcIP; Zero(&ret, sizeof(ret));
if (dest_ip == 0)
{
dest_ip = 0xffffffff;
}
// Transmission
VirtualDhcpSend(v, tran_id, dest_ip, Endian16(p->L4.UDPHeader->SrcPort),
ip, dhcp->ClientMacAddress, b, dhcp->HardwareType, dhcp->HardwareAddressSize);
// Release the memory ret.Opcode = DHCP_NACK;
FreeBuf(b); ret.ServerAddress = v->HostIP;
StrCpy(ret.DomainName, sizeof(ret.DomainName), v->DhcpDomain);
ret.SubnetMask = v->DhcpMask;
// Build the DHCP option
o = BuildDhcpOption(&ret);
if (o != NULL)
{
BUF *b = BuildDhcpOptionsBuf(o);
if (b != NULL)
{
UINT dest_ip = p->L3.IPv4Header->SrcIP;
if (dest_ip == 0)
{
dest_ip = 0xffffffff;
}
// Transmission
VirtualDhcpSend(v, tran_id, dest_ip, Endian16(p->L4.UDPHeader->SrcPort),
ip, dhcp->ClientMacAddress, b, dhcp->HardwareType, dhcp->HardwareAddressSize);
// Release the memory
FreeBuf(b);
}
FreeDhcpOptions(o);
} }
FreeDhcpOptions(o);
} }
} }
} }