Spexeah/Asuro
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git-svn-id: https://spexeah.com:8443/svn/Asuro@1045 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c

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This commit is contained in:
kieron 2020-07-12 21:44:23 +00:00
parent 70593b1c18
commit 03f7d618cb
1 changed files with 35 additions and 1 deletions
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36
src/driver/net/l5/dhcp.pas
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@ -217,6 +217,22 @@ begin
readOption32:= read32^;
end;
function getOptionByOpcode(Options : PDHCPOptions; Opcode : TDHCPOpCode) : PDHCPOption;
var
Option : PDHCPOption;
i : uint16;
begin
getOptionByOpcode:= nil;
for i:=0 to getOptionsCount(Options)-1 do begin
Option:= getOption(Options, i);
if Option^.Opcode = Opcode then begin
getOptionByOpcode:= Option;
break;
end;
end;
end;
function writeOptions(Header : PDHCPHeader; Options : PDHCPOptions; newLength : puint16) : PDHCPHeader;
var
OptionsSize : uint16;
@ -414,11 +430,15 @@ Var
NewSendHeader : PDHCPHeader;
NewHeaderSize : uint32;
RequestParams : Array[0..3] of uint8;
SendCtx : PUDPSendContext;
PacketCtx : PPacketContext;
MAC : puint8;
Option : PDHCPOption;
begin
console.outputln('DHCP', 'Process OFFER.');
@ -433,9 +453,21 @@ begin
SendOptions:= newOptions();
SendMsgType:= ord(TDHCPMessageType.REQUEST);
NewOption(SendOptions, TDHCPOpCode.DHCP_MESSAGE_TYPE, void(@SendMsgType), 1, false);
NewOption(SendOptions, TDHCPOpCode.REQUESTED_IP_ADDRESS, void(@SendHeader^.Client_IP[0]), 4, false);
NewOption(SendOptions, TDHCPOpCode.SERVER_IDENTIFIER, void(@SendHeader^.Server_IP[0]), 4, false);
Option:= getOptionByOpcode(Options, TDHCPOpCode.SERVER_IDENTIFIER);
if Option <> nil then begin
NewOption(SendOptions, TDHCPOpCode.SERVER_IDENTIFIER, void(@Option^.Value[0]), 4, false);
end;
RequestParams[0]:= Ord(TDHCPOpCode.SUBNET_MASK);
RequestParams[1]:= Ord(TDHCPOpCode.ROUTER);
RequestParams[2]:= Ord(TDHCPOpCode.DOMAIN_NAME);
RequestParams[3]:= Ord(TDHCPOpCode.DNS_SERVER);
NewOption(SendOptions, TDHCPOpCode.PARAMETER_REQUEST_LIST, void(@RequestParams[0]), 4, false);
NewOption(SendOptions, TDHCPOpCode.END_VENDOR_OPTIONS, nil, 0, false);
NewSendHeader:= writeOptions(SendHeader, SendOptions, @NewHeaderSize);
@ -526,6 +558,8 @@ begin
{ Packet is intended for a DHCP server }
Outputln('DHCP','Packet is a server packet.');
end;
end else begin
Outputln('DHCP', 'Packet is not addressed to us.');
end;