More fixes in UDP, IPv4 and socket code.

Fixes in network library, nslookup works now.

git-svn-id: svn://kolibrios.org@1208 a494cfbc-eb01-0410-851d-a64ba20cac60

kernel/branches/net/applications/network_lib/network.asm

@@ -675,40 +675,23 @@ lock	xadd	[DNSrequestID], eax	; atomically increment ID, get old value
 	mov	eax, 0x01000100
 	stosd
 ; 7. Get DNS server address.
-; Get number of running cards.
-	mcall	73, -1
-	xchg	eax, edx
-; Loop for all initialized network cards, scanning for initialized DNS address.
-	mov	ebx, 0x00000004 ; protocol IP=0, device number=0, function=get DNS address
-.get_dns_loop:
-	mcall	75
+	mcall	75, 0x00000004 ; protocol IP=0, device number=0, function=get DNS address
 	cmp	eax, -1
-	jz	.get_dns_next
-	test	ecx, ecx
-	jnz	.got_dns
-	dec	edx
-	jz	.get_dns_done
-.get_dns_next:
-	inc	bh
-	jnz	.get_dns_loop
-; all possible devices were checked, none found - return error
-.get_dns_done:
-	jmp	.ret.dnserr
-.got_dns:
-	mov	esi, ecx	; put server address to esi
+	je	.ret.dnserr
+	mov	esi, eax	; put server address to esi
 ; 8. Open UDP socket to DNS server, port 53.
 ; 8a. Create new socket.
 	mcall	74, 0, AF_INET, IPPROTO_UDP
 	cmp	eax, -1 ; error?
 	jz	.ret.dnserr
-	xchg	ecx, eax	; put socket handle to ecx
+	mov	ecx, eax	; put socket handle to ecx
 ; 8b. Create sockaddr structure on the stack.
 	push	0
 	push	0	; sin_zero
 	push	esi	; sin_addr
 	push	AF_INET + (53 shl 24)
 			; sin_family and sin_port in network byte order
-; 8c. Call the system.
+; 8c. Connect.
 	mcall	74, 4, , esp, sizeof.sockaddr_in
 ; 8d. Restore the stack, undo 8b.
 	add	esp, esi
@@ -778,7 +761,7 @@ end virtual
 ; 2. Read UDP datagram.
 	mov	ecx, [edi+__gai_reqdata.socket]
 	push	edi
-	mcall	74, 6, , , 512, 0
+	mcall	74, 7, , , 512, 0
 	pop	edi
 ; 3. Ignore events for other sockets (return if no data read)
 	test	eax, eax

kernel/branches/net/network/IPv4.inc

@@ -512,6 +512,16 @@ IPv4_create_packet:
 	cmp	ecx, 1480
 	jg	.exit_
 
+	cmp	ebx, ebx	      ; if dest ip = 0
+	jnz	.ip_ok		      ; and local ip is valid
+				      ; use local ip instead
+	cmp	[IP_LIST],0xffffffff  ;
+	je	.ip_ok		      ; TODO: find solution to send broadcast
+				      ; on device other then device 0
+	mov	ebx, [IP_LIST]	      ;
+				      ;
+  .ip_ok:			      ;
+
 	push	ecx eax ebx dx di
 
 	cmp	eax, -1

kernel/branches/net/network/socket.inc

@@ -722,9 +722,11 @@ socket_send:
 	cmp	[eax + SOCKET.LocalPort],0
 	jne	.port_ok
 
+	push	esi
 	mov	ecx, [eax + SOCKET.Type]
 	call	socket_find_port
 	test	bx, bx
+	pop	esi
 	je	s_error
 	mov	[eax + SOCKET.LocalPort], bx
 
@@ -733,7 +735,7 @@ socket_send:
 	mov	ecx, esi
 	mov	esi, edx
 	mov	edx, dword [eax + SOCKET.LocalPort] ; load local port and remote port at once
-	DEBUGF	1,"local port: %x, remote port: %x\n",[eax + SOCKET.LocalPort]:2, [eax + SOCKET.RemotePort]:2
+	DEBUGF	1,"local port: %x, remote port: %x\n",[eax + SOCKET.LocalPort]:4, [eax + SOCKET.RemotePort]:4
 	mov	ebx, [eax + SOCKET.LocalIP]
 	mov	eax, [eax + SOCKET.RemoteIP]
 
@@ -787,7 +789,7 @@ socket_send:
 align 4
 socket_find_port:
 
-	DEBUGF	1,"Socket_find_free_port, type: %u ",eax
+	DEBUGF	1,"Socket_find_free_port\n"
 
 	cmp	ecx, IP_PROTO_UDP
 	je	.udp

kernel/branches/net/network/udp.inc

@@ -95,6 +95,8 @@ UDP_handler:
 	cmp	[eax + SOCKET.LocalPort], bx
 	jne	.next_socket
 
+	DEBUGF 1,"found socket with matching domain, type and localport\n"
+
 	; For dhcp, we must allow any remote server to respond.
 	; I will accept the first incoming response to be the one
 	; I bind to, if the socket is opened with a destination IP address of
@@ -103,10 +105,12 @@ UDP_handler:
 	je	.ok1
 
 	mov	ebx, [esp]
-	mov	ebx, [ebx + ETH_FRAME.Data + IPv4_Packet.SourceAddress] ; get the Source address from the IP Packet
-	cmp	[eax + SOCKET.RemoteIP], eax
+	mov	ebx, [ebx + ETH_FRAME.Data + IPv4_Packet.SourceAddress] ; get the Source address from the IP Packet   FIXME
+	cmp	[eax + SOCKET.RemoteIP], ebx
 	jne	.try_more					      ; Quit if the source IP is not valid, check for more sockets with this IP/PORT combination
 
+
+	DEBUGF 1,"Remote Ip matches\n"
   .ok1:
 
 	mov	bx, [edx + UDP_Packet.SourcePort]		      ; Remote port must be 0, or equal to sourceport of packet