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Rev 1206 Rev 1208
Line 673... Line 673...
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;       query class = IN (internet IPv4 address) = 1
 673 
;       query class = IN (internet IPv4 address) = 1
674 
; Note that network byte order is big-endian.
 674 
; Note that network byte order is big-endian.
675 
	mov	eax, 0x01000100
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	mov	eax, 0x01000100
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	stosd
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	stosd
677 
; 7. Get DNS server address.
 677 
; 7. Get DNS server address.
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; Get number of running cards.
 - 
 
679 
	mcall	73, -1
 - 
 
680 
	xchg	eax, edx
 - 
 
681 
; Loop for all initialized network cards, scanning for initialized DNS address.
 - 
 
682 
	mov	ebx, 0x00000004 ; protocol IP=0, device number=0, function=get DNS address
 678 
	mcall	75, 0x00000004 ; protocol IP=0, device number=0, function=get DNS address
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.get_dns_loop:
 - 
 
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	mcall	75
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	cmp	eax, -1
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	cmp	eax, -1
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	jz	.get_dns_next
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	test	ecx, ecx
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688 
	jnz	.got_dns
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	dec	edx
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	jz	.get_dns_done
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.get_dns_next:
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	inc	bh
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	jnz	.get_dns_loop
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; all possible devices were checked, none found - return error
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.get_dns_done:
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	jmp	.ret.dnserr
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	je	.ret.dnserr
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.got_dns:
 - 
 
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	mov	esi, ecx	; put server address to esi
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	mov	esi, eax	; put server address to esi
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; 8. Open UDP socket to DNS server, port 53.
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; 8. Open UDP socket to DNS server, port 53.
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; 8a. Create new socket.
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; 8a. Create new socket.
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	mcall	74, 0, AF_INET, IPPROTO_UDP
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	mcall	74, 0, AF_INET, IPPROTO_UDP
702 
	cmp	eax, -1 ; error?
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	cmp	eax, -1 ; error?
703 
	jz	.ret.dnserr
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	jz	.ret.dnserr
704 
	xchg	ecx, eax	; put socket handle to ecx
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	mov	ecx, eax	; put socket handle to ecx
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; 8b. Create sockaddr structure on the stack.
 688 
; 8b. Create sockaddr structure on the stack.
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	push	0
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	push	0
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	push	0	; sin_zero
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	push	0	; sin_zero
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	push	esi	; sin_addr
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	push	esi	; sin_addr
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	push	AF_INET + (53 shl 24)
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	push	AF_INET + (53 shl 24)
710 
			; sin_family and sin_port in network byte order
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			; sin_family and sin_port in network byte order
711 
; 8c. Call the system.
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; 8c. Connect.
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	mcall	74, 4, , esp, sizeof.sockaddr_in
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	mcall	74, 4, , esp, sizeof.sockaddr_in
713 
; 8d. Restore the stack, undo 8b.
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; 8d. Restore the stack, undo 8b.
714 
	add	esp, esi
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	add	esp, esi
715 
; 8e. Check result.
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; 8e. Check result.
716 
	cmp	eax, -1
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	cmp	eax, -1
Line 776... Line 759...
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	push	ebx esi edi
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	push	ebx esi edi
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	mov	edi, [.reqdata]
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	mov	edi, [.reqdata]
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; 2. Read UDP datagram.
 761 
; 2. Read UDP datagram.
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	mov	ecx, [edi+__gai_reqdata.socket]
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	mov	ecx, [edi+__gai_reqdata.socket]
780 
	push	edi
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	push	edi
781 
	mcall	74, 6, , , 512, 0
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	mcall	74, 7, , , 512, 0
782 
	pop	edi
 765 
	pop	edi
783 
; 3. Ignore events for other sockets (return if no data read)
 766 
; 3. Ignore events for other sockets (return if no data read)
784 
	test	eax, eax
 767 
	test	eax, eax
785 
	jz	.ret.more_processing_required
 768 
	jz	.ret.more_processing_required
786 
; 4. Sanity check: discard too short packets.
 769 
; 4. Sanity check: discard too short packets.