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Rev 1482 Rev 1483
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;             Version 2, June 1991                                ;;
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;;             Version 2, June 1991                                ;;
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;;                                                                 ;;
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;;                                                                 ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 1482 $
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$Revision: 1483 $
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;
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;
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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align 4
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align 4
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UDP_handler:
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UDP_handler:
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	DEBUGF	1,"UDP_Handler, checksum:%x\n", [edx+UDP_Packet.Checksum]:4
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	DEBUGF	1,"UDP_Handler, checksum:%x, size:%u\n", [edx+UDP_Packet.Checksum]:4, ecx
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; First validate, checksum:
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; First validate, checksum:
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	cmp    [edx + UDP_Packet.Checksum], 0
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	cmp    [edx + UDP_Packet.Checksum], 0
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	jz     .no_checksum
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	jz     .no_checksum
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	push	ecx edx
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	push	edx
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	push	esi
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	push	esi
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	push	edi
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	push	edi
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	mov	esi, edx
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	mov	esi, edx
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	call	UDP_checksum
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	call	UDP_checksum
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	; I bind to, if the socket is opened with a destination IP address of
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	; I bind to, if the socket is opened with a destination IP address of
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	; 255.255.255.255
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	; 255.255.255.255
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	cmp	[eax + SOCKET_head.end + IPv4_SOCKET.RemoteIP], 0xffffffff
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	cmp	[eax + SOCKET_head.end + IPv4_SOCKET.RemoteIP], 0xffffffff
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	je	.ok1
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	je	.ok1
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	mov	esi, [esp]
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;        mov     esi, [esp] ; start of data (ethernet header)
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	mov	esi, [ebx + ETH_FRAME.Data + IPv4_Packet.SourceAddress] ; get the Source address from the IP Packet   FIXME
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;        mov     esi, [esi + ETH_FRAME.Data + IPv4_Packet.SourceAddress] ; get the Source address from the IP Packet   FIXME
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	cmp	[eax + SOCKET_head.end + IPv4_SOCKET.RemoteIP], esi
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	cmp	[eax + SOCKET_head.end + IPv4_SOCKET.RemoteIP], edi ;esi
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	jne	.try_more					      ; Quit if the source IP is not valid, check for more sockets with this IP/PORT combination
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	jne	.try_more					      ; Quit if the source IP is not valid, check for more sockets with this IP/PORT combination
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	mov	[eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.RemotePort], si
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	mov	[eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.RemotePort], si
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	inc	[eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.firstpacket]
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	inc	[eax + SOCKET_head.end + IPv4_SOCKET.end + UDP_SOCKET.firstpacket]
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	jmp	.ok2
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	jmp	.ok2
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  .checksum_mismatch:
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  .checksum_mismatch:
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	adc	dl, [esp+1+8]
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	adc	dl, [esp+1+8]
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	adc	dh, [esp+0+8]
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	adc	dh, [esp+0+8]
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	adc	dl, [esp+3+8]
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	adc	dl, [esp+3+8]
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	adc	dh, [esp+2+8]
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	adc	dh, [esp+2+8]
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	adc	dl, byte[esi+UDP_Packet.Length+1]
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	adc	dl, cl ; byte[esi+UDP_Packet.Length+1]
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	adc	dh, byte[esi+UDP_Packet.Length+0]
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	adc	dh, ch ; byte[esi+UDP_Packet.Length+0]
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; Done with pseudoheader, now do real header
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; Done with pseudoheader, now do real header