457 lines
16 KiB
PHP
457 lines
16 KiB
PHP
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2019. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; ICMP.INC ;;
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;; ;;
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;; Part of the tcp/ip network stack for KolibriOS ;;
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;; ;;
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;; Based on the work of [Johnny_B] and [smb] ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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; ICMP types & codes
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ICMP_ECHOREPLY = 0 ; echo reply message
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ICMP_UNREACH = 3
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ICMP_UNREACH_NET = 0 ; bad net
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ICMP_UNREACH_HOST = 1 ; bad host
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ICMP_UNREACH_PROTOCOL = 2 ; bad protocol
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ICMP_UNREACH_PORT = 3 ; bad port
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ICMP_UNREACH_NEEDFRAG = 4 ; IP_DF caused drop
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ICMP_UNREACH_SRCFAIL = 5 ; src route failed
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ICMP_UNREACH_NET_UNKNOWN = 6 ; unknown net
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ICMP_UNREACH_HOST_UNKNOWN = 7 ; unknown host
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ICMP_UNREACH_ISOLATED = 8 ; src host isolated
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ICMP_UNREACH_NET_PROHIB = 9 ; prohibited access
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ICMP_UNREACH_HOST_PROHIB = 10 ; ditto
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ICMP_UNREACH_TOSNET = 11 ; bad tos for net
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ICMP_UNREACH_TOSHOST = 12 ; bad tos for host
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ICMP_UNREACH_FILTER_PROHIB = 13 ; admin prohib
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ICMP_UNREACH_HOST_PRECEDENCE = 14 ; host prec vio.
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ICMP_UNREACH_PRECEDENCE_CUTOFF = 15 ; prec cutoff
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ICMP_SOURCEQUENCH = 4 ; Packet lost, slow down
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ICMP_REDIRECT = 5 ; shorter route, codes:
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ICMP_REDIRECT_NET = 0 ; for network
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ICMP_REDIRECT_HOST = 1 ; for host
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ICMP_REDIRECT_TOSNET = 2 ; for tos and net
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ICMP_REDIRECT_TOSHOST = 3 ; for tos and host
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ICMP_ALTHOSTADDR = 6 ; alternate host address
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ICMP_ECHO = 8 ; echo service
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ICMP_ROUTERADVERT = 9 ; router advertisement
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ICMP_ROUTERADVERT_NORMAL = 0 ; normal advertisement
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ICMP_ROUTERADVERT_NOROUTE_COMMON= 16 ; selective routing
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ICMP_ROUTERSOLICIT = 10 ; router solicitation
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ICMP_TIMXCEED = 11 ; time exceeded, code:
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ICMP_TIMXCEED_INTRANS = 0 ; ttl==0 in transit
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ICMP_TIMXCEED_REASS = 1 ; ttl==0 in reass
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ICMP_PARAMPROB = 12 ; ip header bad
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ICMP_PARAMPROB_ERRATPTR = 0 ; error at param ptr
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ICMP_PARAMPROB_OPTABSENT = 1 ; req. opt. absent
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ICMP_PARAMPROB_LENGTH = 2 ; bad length
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ICMP_TSTAMP = 13 ; timestamp request
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ICMP_TSTAMPREPLY = 14 ; timestamp reply
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ICMP_IREQ = 15 ; information request
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ICMP_IREQREPLY = 16 ; information reply
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ICMP_MASKREQ = 17 ; address mask request
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ICMP_MASKREPLY = 18 ; address mask reply
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ICMP_TRACEROUTE = 30 ; traceroute
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ICMP_DATACONVERR = 31 ; data conversion error
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ICMP_MOBILE_REDIRECT = 32 ; mobile host redirect
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ICMP_IPV6_WHEREAREYOU = 33 ; IPv6 where-are-you
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ICMP_IPV6_IAMHERE = 34 ; IPv6 i-am-here
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ICMP_MOBILE_REGREQUEST = 35 ; mobile registration req
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ICMP_MOBILE_REGREPLY = 36 ; mobile registreation reply
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ICMP_SKIP = 39 ; SKIP
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ICMP_PHOTURIS = 40 ; Photuris
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ICMP_PHOTURIS_UNKNOWN_INDEX = 1 ; unknown sec index
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ICMP_PHOTURIS_AUTH_FAILED = 2 ; auth failed
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ICMP_PHOTURIS_DECRYPT_FAILED = 3 ; decrypt failed
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struct ICMP_header
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Type db ?
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Code db ?
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Checksum dw ?
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Identifier dw ?
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SequenceNumber dw ?
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ends
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uglobal
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align 4
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ICMP_packets_tx rd NET_DEVICES_MAX
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ICMP_packets_rx rd NET_DEVICES_MAX
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endg
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;-----------------------------------------------------------------;
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; ;
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; ICMP_init ;
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; ;
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;-----------------------------------------------------------------;
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macro icmp_init {
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xor eax, eax
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mov edi, ICMP_packets_tx
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mov ecx, 2*NET_DEVICES_MAX
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rep stosd
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}
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;-----------------------------------------------------------------;
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; ;
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; icmp_input: Send a reply's to an ICMP echo or insert packets ;
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; into socket. ;
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; ;
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; IN: [esp] = ptr to buffer ;
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; ebx = ptr to device struct ;
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; ecx = ICMP Packet size ;
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; edx = ptr to IPv4 header ;
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; esi = ptr to ICMP Packet data ;
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; edi = interface number*4 ;
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; ;
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; OUT: / ;
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; ;
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;-----------------------------------------------------------------;
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align 4
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icmp_input:
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DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP_input\n"
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; Dump all multicasts and broadcasts
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mov eax, [IPv4_address + edi]
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cmp eax, [edx + IPv4_header.DestinationAddress]
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jne .dump
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; Check the checksum
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push esi ecx edx
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push [esi + ICMP_header.Checksum]
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mov [esi + ICMP_header.Checksum], 0
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xor edx, edx
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call checksum_1
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call checksum_2
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pop si
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cmp dx, si
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pop edx ecx esi
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jne .checksum_mismatch
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DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP_input: Checksum OK\n"
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; Update stats
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inc [ICMP_packets_rx + edi]
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; Is this an echo request?
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cmp [esi + ICMP_header.Type], ICMP_ECHO
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je .echo_request
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; Look for an open ICMP socket
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pusha
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mov ecx, socket_mutex
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call mutex_lock
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popa
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add ecx, esi
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sub ecx, edx
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mov esi, edx
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mov eax, net_sockets
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.next_socket:
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mov eax, [eax + SOCKET.NextPtr]
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or eax, eax
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jz .dump_
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cmp [eax + SOCKET.Domain], AF_INET4
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jne .next_socket
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cmp [eax + SOCKET.Protocol], IP_PROTO_ICMP
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jne .next_socket
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pusha
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mov ecx, socket_mutex
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call mutex_unlock
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popa
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DEBUGF DEBUG_NETWORK_VERBOSE, "socket=%x\n", eax
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pusha
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lea ecx, [eax + SOCKET.mutex]
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call mutex_lock
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popa
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jmp socket_input
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.echo_request:
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; We'll reuse the packet so we can create the response as fast as possible
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DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP echo request\n"
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; Change Packet type to reply
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mov [esi + ICMP_header.Type], ICMP_ECHOREPLY
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mov eax, [esp]
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mov esi, [eax + NET_BUFF.offset]
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add esi, eax
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; Check frame type
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cmp [eax + NET_BUFF.type], NET_BUFF_ETH
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jne .not_ethernet
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; exchange dest and source MAC in ETH header
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push dword [esi + ETH_header.DstMAC]
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push dword [esi + ETH_header.SrcMAC]
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pop dword [esi + ETH_header.DstMAC]
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pop dword [esi + ETH_header.SrcMAC]
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push word [esi + ETH_header.DstMAC + 4]
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push word [esi + ETH_header.SrcMAC + 4]
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pop word [esi + ETH_header.DstMAC + 4]
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pop word [esi + ETH_header.SrcMAC + 4]
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add esi, sizeof.ETH_header
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.not_ethernet:
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; Exchange dest and source address in IP header
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push [esi + IPv4_header.SourceAddress]
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push [esi + IPv4_header.DestinationAddress]
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pop [esi + IPv4_header.SourceAddress]
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pop [esi + IPv4_header.DestinationAddress]
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; Calculate IP header length
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movzx ecx, [esi + IPv4_header.VersionAndIHL]
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and ecx, 0x0f
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shl cx, 2
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mov edi, ecx ; put it in edi for later
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; Calculate IP checksum
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mov eax, esi
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mov [eax + IPv4_header.HeaderChecksum], 0
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xor edx, edx
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call checksum_1
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call checksum_2
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mov [eax + IPv4_header.HeaderChecksum], dx
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; Calculate ICMP packet length
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movzx ecx, [eax + IPv4_header.TotalLength]
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xchg ch, cl
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sub ecx, edi ; IP packet length - IP header length = ICMP packet length
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; Calculate ICMP checkSum
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mov eax, esi
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mov [esi + ICMP_header.Checksum], 0
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xor edx, edx
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call checksum_1
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call checksum_2
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mov [eax + ICMP_header.Checksum], dx
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; Transmit the frame
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DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP transmitting reply\n"
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call [ebx + NET_DEVICE.transmit]
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test eax, eax
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jnz @f
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DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP transmit failed\n"
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call net_ptr_to_num4
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inc [ICMP_packets_tx + edi]
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inc [IPv4_packets_tx + edi]
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@@:
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ret
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.dump_:
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pusha
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mov ecx, socket_mutex
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call mutex_unlock
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popa
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DEBUGF DEBUG_NETWORK_ERROR, "ICMP_input: no socket found\n"
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jmp .dump
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.checksum_mismatch:
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DEBUGF DEBUG_NETWORK_ERROR, "ICMP_input: checksum mismatch\n"
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.dump:
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DEBUGF DEBUG_NETWORK_VERBOSE, "ICMP_input: dumping\n"
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call net_buff_free
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ret
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if 0
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;-----------------------------------------------------------------;
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; ;
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; icmp_output ;
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; ;
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; IN: eax = dest ip ;
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; bh = type ;
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; bl = code ;
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; ecx = data length ;
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; edx = source ip ;
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; esi = data offset ;
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; edi = identifier shl 16 + sequence number ;
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; ;
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;-----------------------------------------------------------------;
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align 4
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icmp_output:
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DEBUGF DEBUG_NETWORK_VERBOSE, "Creating ICMP Packet\n"
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push esi edi bx
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add ecx, sizeof.ICMP_header
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mov di, IP_PROTO_ICMP SHL 8 + 128 ; TTL
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call IPv4_output
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jz .exit
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DEBUGF DEBUG_NETWORK_VERBOSE, "full icmp packet size: %u\n", edx
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pop word [edi + ICMP_header.Type] ; Write both type and code bytes at once
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pop dword [edi + ICMP_header.Identifier] ; identifier and sequence number
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mov [edi + ICMP_header.Checksum], 0
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push ebx ecx edx
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mov esi, edi
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xor edx, edx
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call checksum_1
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call checksum_2
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mov [edi + ICMP_header.Checksum], dx
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pop edx ecx ebx esi
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sub ecx, sizeof.ICMP_header
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add edi, sizeof.ICMP_header
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push cx
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shr cx, 2
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rep movsd
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pop cx
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and cx, 3
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rep movsb
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sub edi, edx ;;; TODO: find a better way to remember start of packet
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push edx edi
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DEBUGF DEBUG_NETWORK_VERBOSE, "Sending ICMP Packet\n"
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call [ebx + NET_DEVICE.transmit]
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test eax, eax
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jnz @f
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call NET_ptr_to_num4
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inc [ICMP_PACKETS_TX + edi]
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@@:
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ret
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.exit:
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DEBUGF DEBUG_NETWORK_ERROR, "Creating ICMP Packet failed\n"
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add esp, 2*4 + 2
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ret
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end if
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;-----------------------------------------------------------------;
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; ;
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; icmp_output_raw ;
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; ;
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; IN: eax = socket ptr ;
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; ecx = data length ;
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; edx = data pointer ;
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; ;
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;-----------------------------------------------------------------;
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align 4
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icmp_output_raw:
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DEBUGF DEBUG_NETWORK_VERBOSE, "Creating ICMP Packet for socket %x, data ptr=%x\n", eax, edx
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push edx
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mov ebx, [eax + IP_SOCKET.device]
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mov edx, [eax + IP_SOCKET.LocalIP]
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mov edi, [eax + IP_SOCKET.RemoteIP]
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mov al, [eax + IP_SOCKET.ttl]
|
||
|
|
mov ah, IP_PROTO_ICMP
|
||
|
|
call ipv4_output
|
||
|
|
jz .fail
|
||
|
|
|
||
|
|
pop esi
|
||
|
|
push eax
|
||
|
|
|
||
|
|
push edi ecx
|
||
|
|
DEBUGF DEBUG_NETWORK_VERBOSE, "copying %u bytes from %x to %x\n", ecx, esi, edi
|
||
|
|
rep movsb
|
||
|
|
pop ecx edi
|
||
|
|
|
||
|
|
mov [edi + ICMP_header.Checksum], 0
|
||
|
|
|
||
|
|
mov esi, edi
|
||
|
|
xor edx, edx
|
||
|
|
call checksum_1
|
||
|
|
call checksum_2
|
||
|
|
mov [edi + ICMP_header.Checksum], dx
|
||
|
|
|
||
|
|
DEBUGF DEBUG_NETWORK_VERBOSE, "Sending ICMP Packet\n"
|
||
|
|
call [ebx + NET_DEVICE.transmit]
|
||
|
|
test eax, eax
|
||
|
|
jnz @f
|
||
|
|
call net_ptr_to_num4
|
||
|
|
inc [ICMP_packets_tx + edi]
|
||
|
|
@@:
|
||
|
|
ret
|
||
|
|
|
||
|
|
.fail:
|
||
|
|
pop edx
|
||
|
|
DEBUGF DEBUG_NETWORK_ERROR, "Creating ICMP Packet failed\n"
|
||
|
|
or eax, -1
|
||
|
|
mov ebx, EMSGSIZE ;;; FIXME
|
||
|
|
ret
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------;
|
||
|
|
; ;
|
||
|
|
; icmp_api: Part of system function 76. ;
|
||
|
|
; ;
|
||
|
|
; IN: bl = subfunction number ;
|
||
|
|
; bh = device number ;
|
||
|
|
; ecx, edx, .. depends on subfunction ;
|
||
|
|
; ;
|
||
|
|
; OUT: depends on subfunction ;
|
||
|
|
; ;
|
||
|
|
;-----------------------------------------------------------------;
|
||
|
|
align 4
|
||
|
|
icmp_api:
|
||
|
|
|
||
|
|
movzx eax, bh
|
||
|
|
shl eax, 2
|
||
|
|
|
||
|
|
test bl, bl
|
||
|
|
jz .packets_tx ; 0
|
||
|
|
dec bl
|
||
|
|
jz .packets_rx ; 1
|
||
|
|
|
||
|
|
.error:
|
||
|
|
mov eax, -1
|
||
|
|
ret
|
||
|
|
|
||
|
|
.packets_tx:
|
||
|
|
mov eax, [ICMP_packets_tx + eax]
|
||
|
|
ret
|
||
|
|
|
||
|
|
.packets_rx:
|
||
|
|
mov eax, [ICMP_packets_rx + eax]
|
||
|
|
ret
|