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Rev 1831 Rev 1838
Line 12... Line 12...
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
 12 
;;          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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 16 
 
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$Revision: 1831 $
 17 
$Revision: 1838 $
18 
 
 18 
 
19 
;-----------------------------------------------------------------
 19 
;-----------------------------------------------------------------
20 
;
 20 
;
Line 179... Line 179...
179 
; Is this socket a listening socket?
 179 
; Is this socket a listening socket?
Line 180... Line 180...
180 
 
 180 
 
181 
	test	[ebx + SOCKET.options], SO_ACCEPTCON
 181 
	test	[ebx + SOCKET.options], SO_ACCEPTCON
Line -... Line 182...
- 
 
 182 
	jz	.no_listening_socket
- 
 
 183 
 
- 
 
 184 
	DEBUGF	1,"Accepting new connection\n"
182 
	jz	.no_listening_socket
 185 
 
183 
 
 - 
 
Line 184... Line 186...
184 
	call	SOCKET_fork
 186 
	mov	[ebx + SOCKET.lock], 0
185 
	jz	.drop
 187 
	call	SOCKET_fork
Line 186... Line 188...
186 
 
 188 
 
187 
	push	[edx + TCP_segment.DestinationPort]
 189 
	test	eax, eax
Line 188... Line 190...
188 
	pop	[eax + TCP_SOCKET.LocalPort]
 190 
	jz	.drop
189 
 
 191 
 
Line 190... Line 192...
190 
	push	[edx - IPv4_Packet.DataOrOptional + IPv4_Packet.DestinationAddress]	;;; FIXME
 192 
	push	[edx - IPv4_Packet.DataOrOptional + IPv4_Packet.DestinationAddress]	;;; FIXME
Line -... Line 193...
- 
 
 193 
	pop	[eax + IP_SOCKET.LocalIP]
- 
 
 194 
 
- 
 
 195 
	push	[edx + TCP_segment.DestinationPort]
191 
	pop	[eax + IP_SOCKET.LocalIP]
 196 
	pop	[eax + TCP_SOCKET.LocalPort]
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192 
 
 197 
 
Line 193... Line 198...
193 
	push	[edx - IPv4_Packet.DataOrOptional + IPv4_Packet.SourceAddress]	   ;;; FIXME
 198 
	mov	[eax + TCP_SOCKET.t_state], TCPS_LISTEN
194 
	pop	[eax + IP_SOCKET.RemoteIP]
 199 
 
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465 
	test	[edx + TCP_segment.Flags], TH_SYN
 470 
	test	[edx + TCP_segment.Flags], TH_SYN
466 
	jz	.drop
 471 
	jz	.drop
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467 
 
 472 
 
Line -... Line 473...
- 
 
 473 
;;; TODO: check if it's a broadcast or multicast, and drop if so
468 
;;; TODO: check if it's a broadcast or multicast, and drop if so
 474 
 
Line 469... Line 475...
469 
 
 475 
	push	[edx - IPv4_Packet.DataOrOptional + IPv4_Packet.SourceAddress]	   ;;; FIXME
470 
	add	[TCP_sequence_num], 64000
 476 
	pop	[ebx + IP_SOCKET.RemoteIP]
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471 
 
 477 
 
472 
	push	[edx + TCP_segment.SourcePort]
 478 
	push	[edx + TCP_segment.SourcePort]
Line 473... Line 479...
473 
	pop	[eax + TCP_SOCKET.RemotePort]
 479 
	pop	[ebx + TCP_SOCKET.RemotePort]
- 
 
 480 
 
474 
 
 481 
	push	[edx + TCP_segment.SequenceNumber]
Line 475... Line 482...
475 
	push	[edx + TCP_segment.SequenceNumber]
 482 
	pop	[ebx + TCP_SOCKET.IRS]
476 
	pop	[eax + TCP_SOCKET.IRS]
 483 
 
Line -... Line 484...
- 
 
 484 
	push	[TCP_sequence_num]     ;;;;;
- 
 
 485 
	add	[TCP_sequence_num], 64000 / 2
- 
 
 486 
	pop	[ebx + TCP_SOCKET.ISS]
477 
 
 487 
 
478 
	push	[eax + TCP_SOCKET.ISS]
 488 
	push	[ebx + TCP_SOCKET.ISS]
479 
	pop	[eax + TCP_SOCKET.SND_NXT]
 489 
	pop	[ebx + TCP_SOCKET.SND_NXT]
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480 
 
 490 
 
481 
	TCP_sendseqinit eax
 491 
	TCP_sendseqinit ebx
Line 482... Line 492...
482 
	TCP_rcvseqinit eax
 492 
	TCP_rcvseqinit ebx
483 
 
 493 
 
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484 
	mov	[eax + TCP_SOCKET.t_state], TCPS_SYN_RECEIVED
 494 
	mov	[ebx + TCP_SOCKET.t_state], TCPS_SYN_RECEIVED
485 
	mov	[eax + TCP_SOCKET.t_flags], TF_ACKNOW
 - 
 
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486 
	mov	[eax + TCP_SOCKET.timer_keepalive], TCP_time_keep_interval  ;;;; macro
 495 
	mov	[ebx + TCP_SOCKET.t_flags], TF_ACKNOW
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- 
 
 496 
	mov	[ebx + TCP_SOCKET.timer_keepalive], TCP_time_keep_interval  ;;;; macro
- 
 
 497 
 
487 
 
 498 
	lea	eax, [ebx + STREAM_SOCKET.snd]
488 
	add	eax, STREAM_SOCKET.snd
 499 
	call	SOCKET_ring_create
Line 489... Line 500...
489 
	call	SOCKET_ring_create
 500 
 
490 
 
 501 
	lea	eax, [ebx + STREAM_SOCKET.rcv]
Line 660... Line 671...
660 
 
 671 
 
661 
	and	[edx + TCP_segment.Flags], not (TH_SYN)
 672 
	and	[edx + TCP_segment.Flags], not (TH_SYN)
Line 662... Line 673...
662 
	inc	[edx + TCP_segment.SequenceNumber]
 673 
	inc	[edx + TCP_segment.SequenceNumber]
663 
 
 674 
 
664 
	cmp	[edx + TCP_segment.UrgentPointer], 1
 - 
 
665 
	jl	@f
 675 
	cmp	[edx + TCP_segment.UrgentPointer], 1
666 
 
 - 
 
667 
	dec	[edx + TCP_segment.UrgentPointer]
 676 
	jle	@f
668 
 
 677 
	dec	[edx + TCP_segment.UrgentPointer]
669 
	jmp	.no_dup_syn
 - 
 
670 
       @@:
 678 
	jmp	.dup_syn
- 
 
 679 
       @@:
671 
 
 680 
	and	[edx + TCP_segment.Flags], not (TH_URG)
672 
	and	[edx + TCP_segment.Flags], not (TH_URG)
 - 
 
673 
	dec	eax
 681 
  .dup_syn:
Line 674... Line 682...
674 
	jz	.no_duplicate
 682 
	dec	eax
Line 675... Line 683...
675 
  .no_dup_syn:
 683 
  .no_dup_syn:
Line 887... Line 895...
887 
	jnz	.no_syn_rcv
 895 
	jnz	.no_syn_rcv
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888 
 
 896 
 
Line 889... Line 897...
889 
	DEBUGF	1,"TCP state = syn received\n"
 897 
	DEBUGF	1,"TCP state = syn received\n"
890 
 
 898 
 
891 
	mov	eax, [edx + TCP_segment.AckNumber]
 899 
	mov	eax, [edx + TCP_segment.AckNumber]
892 
	cmp	eax, [ebx + TCP_SOCKET.SND_UNA]
 - 
 
893 
	jg	.drop_with_reset
 900 
	cmp	[ebx + TCP_SOCKET.SND_UNA], eax
894 
 
 901 
	jg	.drop_with_reset
- 
 
 902 
	cmp	eax, [ebx + TCP_SOCKET.SND_MAX]
895 
	cmp	[ebx + TCP_SOCKET.SND_MAX], eax
 903 
	jg	.drop_with_reset
896 
	jg	.drop_with_reset
 904 
 
897 
	;;; update stats
 905 
	;;; update stats
898 
	mov	eax, ebx
 906 
	mov	eax, ebx
Line 1485... Line 1493...
1485 
	and	[ebx + TCP_SOCKET.t_flags], TF_ACKNOW
 1493 
	and	[ebx + TCP_SOCKET.t_flags], TF_ACKNOW
Line 1486... Line 1494...
1486 
 
 1494 
 
Line 1487... Line 1495...
1487 
	mov	[ebx + SOCKET.lock], 0
 1495 
	mov	[ebx + SOCKET.lock], 0
1488 
 
 1496 
 
1489 
	push	ebx
 1497 
	push	ebx
- 
 
 1498 
;        mov     cl, TH_ACK
- 
 
 1499 
;        call    TCP_respond_socket
1490 
	mov	cl, TH_ACK
 1500 
	mov	eax, ebx
Line 1491... Line 1501...
1491 
	call	TCP_respond_socket
 1501 
	call	TCP_output
1492 
	pop	ebx
 1502 
	pop	ebx
1493 
 
 1503