WebSVN – Kolibri OS – Blame – /kernel/trunk/network/icmp.inc

Rev	Author	Line No.	Line
3545	hidnplayr	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
5363	yogev_ezra	3	;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
3545	hidnplayr	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; ICMP.INC ;;
		7	;; ;;
		8	;; Part of the tcp/ip network stack for KolibriOS ;;
		9	;; ;;
		10	;; Based on the work of [Johnny_B] and [smb] ;;
		11	;; ;;
		12	;; Written by hidnplayr@kolibrios.org ;;
		13	;; ;;
		14	;; GNU GENERAL PUBLIC LICENSE ;;
		15	;; Version 2, June 1991 ;;
		16	;; ;;
		17	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		18
4850	mario79	19	$Revision: 5584 $
3545	hidnplayr	20
		21	; ICMP types & codes
		22
		23	ICMP_ECHOREPLY = 0 ; echo reply message
		24
		25	ICMP_UNREACH = 3
		26	ICMP_UNREACH_NET = 0 ; bad net
		27	ICMP_UNREACH_HOST = 1 ; bad host
		28	ICMP_UNREACH_PROTOCOL = 2 ; bad protocol
		29	ICMP_UNREACH_PORT = 3 ; bad port
		30	ICMP_UNREACH_NEEDFRAG = 4 ; IP_DF caused drop
		31	ICMP_UNREACH_SRCFAIL = 5 ; src route failed
		32	ICMP_UNREACH_NET_UNKNOWN = 6 ; unknown net
		33	ICMP_UNREACH_HOST_UNKNOWN = 7 ; unknown host
		34	ICMP_UNREACH_ISOLATED = 8 ; src host isolated
		35	ICMP_UNREACH_NET_PROHIB = 9 ; prohibited access
		36	ICMP_UNREACH_HOST_PROHIB = 10 ; ditto
		37	ICMP_UNREACH_TOSNET = 11 ; bad tos for net
		38	ICMP_UNREACH_TOSHOST = 12 ; bad tos for host
		39	ICMP_UNREACH_FILTER_PROHIB = 13 ; admin prohib
3556	hidnplayr	40	ICMP_UNREACH_HOST_PRECEDENCE = 14 ; host prec vio.
		41	ICMP_UNREACH_PRECEDENCE_CUTOFF = 15 ; prec cutoff
3545	hidnplayr	42
		43	ICMP_SOURCEQUENCH = 4 ; Packet lost, slow down
		44
		45	ICMP_REDIRECT = 5 ; shorter route, codes:
		46	ICMP_REDIRECT_NET = 0 ; for network
		47	ICMP_REDIRECT_HOST = 1 ; for host
		48	ICMP_REDIRECT_TOSNET = 2 ; for tos and net
		49	ICMP_REDIRECT_TOSHOST = 3 ; for tos and host
		50
		51	ICMP_ALTHOSTADDR = 6 ; alternate host address
		52	ICMP_ECHO = 8 ; echo service
		53	ICMP_ROUTERADVERT = 9 ; router advertisement
		54	ICMP_ROUTERADVERT_NORMAL = 0 ; normal advertisement
		55	ICMP_ROUTERADVERT_NOROUTE_COMMON= 16 ; selective routing
		56
		57	ICMP_ROUTERSOLICIT = 10 ; router solicitation
		58	ICMP_TIMXCEED = 11 ; time exceeded, code:
		59	ICMP_TIMXCEED_INTRANS = 0 ; ttl==0 in transit
		60	ICMP_TIMXCEED_REASS = 1 ; ttl==0 in reass
		61
		62	ICMP_PARAMPROB = 12 ; ip header bad
		63	ICMP_PARAMPROB_ERRATPTR = 0 ; error at param ptr
		64	ICMP_PARAMPROB_OPTABSENT = 1 ; req. opt. absent
		65	ICMP_PARAMPROB_LENGTH = 2 ; bad length
		66
		67	ICMP_TSTAMP = 13 ; timestamp request
		68	ICMP_TSTAMPREPLY = 14 ; timestamp reply
		69	ICMP_IREQ = 15 ; information request
		70	ICMP_IREQREPLY = 16 ; information reply
		71	ICMP_MASKREQ = 17 ; address mask request
		72	ICMP_MASKREPLY = 18 ; address mask reply
		73	ICMP_TRACEROUTE = 30 ; traceroute
		74	ICMP_DATACONVERR = 31 ; data conversion error
		75	ICMP_MOBILE_REDIRECT = 32 ; mobile host redirect
		76	ICMP_IPV6_WHEREAREYOU = 33 ; IPv6 where-are-you
		77	ICMP_IPV6_IAMHERE = 34 ; IPv6 i-am-here
		78	ICMP_MOBILE_REGREQUEST = 35 ; mobile registration req
		79	ICMP_MOBILE_REGREPLY = 36 ; mobile registreation reply
		80	ICMP_SKIP = 39 ; SKIP
		81
		82	ICMP_PHOTURIS = 40 ; Photuris
		83	ICMP_PHOTURIS_UNKNOWN_INDEX = 1 ; unknown sec index
		84	ICMP_PHOTURIS_AUTH_FAILED = 2 ; auth failed
		85	ICMP_PHOTURIS_DECRYPT_FAILED = 3 ; decrypt failed
		86
		87
		88
		89	struct ICMP_header
		90
		91	Type db ?
		92	Code db ?
		93	Checksum dw ?
		94	Identifier dw ?
		95	SequenceNumber dw ?
		96
		97	ends
		98
		99
3698	hidnplayr	100	uglobal
3545	hidnplayr	101	align 4
3698	hidnplayr	102
3600	hidnplayr	103	ICMP_PACKETS_TX rd NET_DEVICES_MAX
		104	ICMP_PACKETS_RX rd NET_DEVICES_MAX
3698	hidnplayr	105
3545	hidnplayr	106	endg
		107
		108
		109
		110	;-----------------------------------------------------------------
		111	;
		112	; ICMP_init
		113	;
		114	;-----------------------------------------------------------------
		115
		116	macro ICMP_init {
		117
		118	xor eax, eax
		119	mov edi, ICMP_PACKETS_TX
3600	hidnplayr	120	mov ecx, 2*NET_DEVICES_MAX
3711	clevermous	121	rep stosd
3545	hidnplayr	122
		123	}
		124
		125
		126	;-----------------------------------------------------------------
		127	;
		128	; ICMP_input:
		129	;
		130	; This procedure will send reply's to ICMP echo's
		131	; and insert packets into sockets when needed
		132	;
		133	; IN: Pointer to buffer in [esp]
		134	; ebx = pointer to device struct
		135	; ecx = ICMP Packet size
		136	; esi = ptr to ICMP Packet data
		137	; edi = ptr to ipv4 source and dest address
		138	;
		139	; OUT: /
		140	;
		141	;-----------------------------------------------------------------
		142	align 4
		143	ICMP_input:
		144
5522	hidnplayr	145	DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP_input\n"
3545	hidnplayr	146
5522	hidnplayr	147	; Check the checksum
3545	hidnplayr	148	push esi ecx
		149	push [esi + ICMP_header.Checksum]
		150	mov [esi + ICMP_header.Checksum], 0
		151	xor edx, edx
		152	call checksum_1
		153	call checksum_2
		154	pop si
		155	cmp dx, si
5522	hidnplayr	156	pop ecx esi
3545	hidnplayr	157	jne .checksum_mismatch
		158
5522	hidnplayr	159	DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP_input: Checksum OK\n"
3643	hidnplayr	160
5522	hidnplayr	161	; Ualidate device ptr
		162	mov eax, edi
3643	hidnplayr	163	call NET_ptr_to_num4
		164	cmp edi, -1
		165	je .dump
5522	hidnplayr	166
		167	; Update stats
3643	hidnplayr	168	inc [ICMP_PACKETS_RX + edi]
		169
5522	hidnplayr	170	; Is this an echo request?
		171	cmp [esi + ICMP_header.Type], ICMP_ECHO
		172	je .echo_request
3545	hidnplayr	173
5522	hidnplayr	174	; Look for an open ICMP socket
3647	hidnplayr	175	pusha
		176	mov ecx, socket_mutex
		177	call mutex_lock
		178	popa
		179
5522	hidnplayr	180	mov edx, [eax] ; ipv4 source address
3545	hidnplayr	181	mov eax, net_sockets
		182	.try_more:
5522	hidnplayr	183	; mov , [esi + ICMP_header.Identifier]
3545	hidnplayr	184	.next_socket:
		185	mov eax, [eax + SOCKET.NextPtr]
		186	or eax, eax
3647	hidnplayr	187	jz .dump_
3545	hidnplayr	188
		189	cmp [eax + SOCKET.Domain], AF_INET4
		190	jne .next_socket
		191
		192	cmp [eax + SOCKET.Protocol], IP_PROTO_ICMP
		193	jne .next_socket
		194
5522	hidnplayr	195	cmp [eax + IP_SOCKET.RemoteIP], edx
3545	hidnplayr	196	jne .next_socket
		197
		198	; cmp [eax + ICMP_SOCKET.Identifier],
		199	; jne .next_socket
		200
3647	hidnplayr	201	pusha
		202	mov ecx, socket_mutex
		203	call mutex_unlock
		204	popa
		205
3556	hidnplayr	206	DEBUGF DEBUG_NETWORK_VERBOSE, "socket=%x\n", eax
3545	hidnplayr	207
		208	pusha
		209	lea ecx, [eax + SOCKET.mutex]
		210	call mutex_lock
		211	popa
		212
		213	jmp SOCKET_input
		214
5522	hidnplayr	215
		216
		217	.echo_request:
		218
		219	; We'll reuse the packet so we can create the response as fast as possible
		220	DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP echo request\n"
		221
		222	; Change Packet type to reply
		223	mov [esi + ICMP_header.Type], ICMP_ECHOREPLY
		224
		225	mov eax, [esp]
		226	lea esi, [eax + NET_BUFF.data]
		227
		228	; Check frame type
		229	cmp [eax + NET_BUFF.type], NET_BUFF_ETH
		230	jne .not_ethernet
		231
		232	; exchange dest and source MAC in ETH header
		233	push dword [esi + ETH_header.DstMAC]
		234	push dword [esi + ETH_header.SrcMAC]
		235	pop dword [esi + ETH_header.DstMAC]
		236	pop dword [esi + ETH_header.SrcMAC]
		237	push word [esi + ETH_header.DstMAC + 4]
		238	push word [esi + ETH_header.SrcMAC + 4]
		239	pop word [esi + ETH_header.DstMAC + 4]
		240	pop word [esi + ETH_header.SrcMAC + 4]
		241	add esi, sizeof.ETH_header
		242
		243	.not_ethernet:
		244	; Exchange dest and source address in IP header
		245	push [esi + IPv4_header.SourceAddress]
		246	push [esi + IPv4_header.DestinationAddress]
		247	pop [esi + IPv4_header.SourceAddress]
		248	pop [esi + IPv4_header.DestinationAddress]
		249
		250	; Calculate IP header length
		251	movzx ecx, [esi + IPv4_header.VersionAndIHL]
		252	and ecx, 0x0f
		253	shl cx, 2
		254	mov edi, ecx ; put it in edi for later
		255
		256	; Calculate IP checksum
		257	mov eax, esi
		258	mov [eax + IPv4_header.HeaderChecksum], 0
		259	xor edx, edx
		260	call checksum_1
		261	call checksum_2
		262	mov [eax + IPv4_header.HeaderChecksum], dx
		263
		264	; Calculate ICMP packet length
		265	movzx ecx, [eax + IPv4_header.TotalLength]
		266	xchg ch, cl
		267	sub ecx, edi ; IP packet length - IP header length = ICMP packet length
		268
		269	; Calculate ICMP checkSum
		270	mov eax, esi
		271	mov [esi + ICMP_header.Checksum], 0
		272	xor edx, edx
		273	call checksum_1
		274	call checksum_2
		275	mov [eax + ICMP_header.Checksum], dx
		276
		277	; Transmit the frame
		278	DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP transmitting reply\n"
		279	call [ebx + NET_DEVICE.transmit]
		280	test eax, eax
		281	jnz @f
		282	DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP transmit failed\n"
		283	call NET_ptr_to_num4
		284	inc [ICMP_PACKETS_TX + edi]
		285	@@:
		286	ret
		287
3647	hidnplayr	288	.dump_:
		289	pusha
		290	mov ecx, socket_mutex
		291	call mutex_unlock
		292	popa
		293
4892	hidnplayr	294	DEBUGF DEBUG_NETWORK_ERROR, "ICMP_input: no socket found\n"
3647	hidnplayr	295	jmp .dump
		296
3545	hidnplayr	297	.checksum_mismatch:
4892	hidnplayr	298	DEBUGF DEBUG_NETWORK_ERROR, "ICMP_input: checksum mismatch\n"
3545	hidnplayr	299
		300	.dump:
3556	hidnplayr	301	DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP_input: dumping\n"
5522	hidnplayr	302	call NET_BUFF_free
3545	hidnplayr	303	ret
		304
		305
4052	hidnplayr	306	if 0
3545	hidnplayr	307	;-----------------------------------------------------------------
		308	;
		309	; ICMP_output
		310	;
		311	; IN: eax = dest ip
4052	hidnplayr	312	; bh = type
		313	; bl = code
3545	hidnplayr	314	; ecx = data length
4052	hidnplayr	315	; edx = source ip
3545	hidnplayr	316	; esi = data offset
		317	; edi = identifier shl 16 + sequence number
		318	;
		319	;-----------------------------------------------------------------
		320	align 4
		321	ICMP_output:
		322
3556	hidnplayr	323	DEBUGF DEBUG_NETWORK_VERBOSE, "Creating ICMP Packet\n"
3545	hidnplayr	324
4052	hidnplayr	325	push esi edi bx
3545	hidnplayr	326	add ecx, sizeof.ICMP_header
		327	mov di, IP_PROTO_ICMP SHL 8 + 128 ; TTL
		328	call IPv4_output
		329	jz .exit
		330
3556	hidnplayr	331	DEBUGF DEBUG_NETWORK_VERBOSE, "full icmp packet size: %u\n", edx
3545	hidnplayr	332
		333	pop word [edi + ICMP_header.Type] ; Write both type and code bytes at once
		334	pop dword [edi + ICMP_header.Identifier] ; identifier and sequence number
		335	mov [edi + ICMP_header.Checksum], 0
		336
		337	push ebx ecx edx
		338	mov esi, edi
		339	xor edx, edx
		340	call checksum_1
		341	call checksum_2
		342	mov [edi + ICMP_header.Checksum], dx
		343	pop edx ecx ebx esi
		344
		345	sub ecx, sizeof.ICMP_header
		346	add edi, sizeof.ICMP_header
		347	push cx
		348	shr cx, 2
3711	clevermous	349	rep movsd
3545	hidnplayr	350	pop cx
		351	and cx, 3
3711	clevermous	352	rep movsb
3545	hidnplayr	353
		354	sub edi, edx ;;; TODO: find a better way to remember start of packet
		355	push edx edi
3556	hidnplayr	356	DEBUGF DEBUG_NETWORK_VERBOSE, "Sending ICMP Packet\n"
3545	hidnplayr	357	call [ebx + NET_DEVICE.transmit]
3643	hidnplayr	358	test eax, eax
		359	jnz @f
		360	call NET_ptr_to_num4
		361	inc [ICMP_PACKETS_TX + edi]
		362	@@:
3545	hidnplayr	363	ret
		364	.exit:
3556	hidnplayr	365	DEBUGF DEBUG_NETWORK_ERROR, "Creating ICMP Packet failed\n"
3545	hidnplayr	366	add esp, 2*4 + 2
		367	ret
4052	hidnplayr	368	end if
3545	hidnplayr	369
		370
		371
		372
		373	;-----------------------------------------------------------------
		374	;
4052	hidnplayr	375	; ICMP_output_raw
3545	hidnplayr	376	;
		377	; IN: eax = socket ptr
		378	; ecx = data length
		379	; esi = data offset
		380	;
		381	;-----------------------------------------------------------------
		382	align 4
		383	ICMP_output_raw:
		384
3556	hidnplayr	385	DEBUGF DEBUG_NETWORK_VERBOSE, "Creating ICMP Packet for socket %x, data ptr=%x\n", eax, edx
3545	hidnplayr	386
		387	push edx
		388
		389	mov di, IP_PROTO_ICMP SHL 8 + 128 ; TTL
		390	mov edx, [eax + IP_SOCKET.LocalIP]
5584	hidnplayr	391	mov ebx, [eax + IP_SOCKET.device]
3545	hidnplayr	392	mov eax, [eax + IP_SOCKET.RemoteIP]
		393	call IPv4_output
		394	jz .exit
		395
		396	pop esi
		397	push eax
		398
		399	push edi ecx
3556	hidnplayr	400	DEBUGF DEBUG_NETWORK_VERBOSE, "copying %u bytes from %x to %x\n", ecx, esi, edi
3711	clevermous	401	rep movsb
3545	hidnplayr	402	pop ecx edi
		403
		404	mov [edi + ICMP_header.Checksum], 0
		405
		406	mov esi, edi
		407	xor edx, edx
		408	call checksum_1
		409	call checksum_2
		410	mov [edi + ICMP_header.Checksum], dx
		411
3556	hidnplayr	412	DEBUGF DEBUG_NETWORK_VERBOSE, "Sending ICMP Packet\n"
3545	hidnplayr	413	call [ebx + NET_DEVICE.transmit]
3643	hidnplayr	414	test eax, eax
		415	jnz @f
		416	call NET_ptr_to_num4
		417	inc [ICMP_PACKETS_TX + edi]
		418	@@:
3545	hidnplayr	419	ret
		420	.exit:
3556	hidnplayr	421	DEBUGF DEBUG_NETWORK_ERROR, "Creating ICMP Packet failed\n"
3545	hidnplayr	422	ret
		423
		424
		425
		426
		427	;-----------------------------------------------------------------
		428	;
		429	; ICMP_API
		430	;
		431	; This function is called by system function 75
		432	;
		433	; IN: subfunction number in bl
		434	; device number in bh
		435	; ecx, edx, .. depends on subfunction
		436	;
		437	; OUT:
		438	;
		439	;-----------------------------------------------------------------
		440	align 4
		441	ICMP_api:
		442
		443	movzx eax, bh
		444	shl eax, 2
		445
		446	test bl, bl
		447	jz .packets_tx ; 0
		448	dec bl
		449	jz .packets_rx ; 1
		450
		451	.error:
		452	mov eax, -1
		453	ret
		454
		455	.packets_tx:
		456	mov eax, [ICMP_PACKETS_TX + eax]
		457	ret
		458
		459	.packets_rx:
		460	mov eax, [ICMP_PACKETS_RX + eax]
		461	ret

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(root)/kernel/trunk/network/icmp.inc – Rev 5584